From d51309b4e9aa79653b8343101def9ba99ba2cb57 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 29 Aug 2022 16:18:11 +0300
Subject: drm/i915: move and group cdclk under display.cdclk

Move display cdclk related members under drm_i915_private display
sub-struct.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/7df23655be5dc70fb1a2b43ce41e1682e40395d8.1661779055.git.jani.nikula@intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 458f010e46f3..f2f7055ee1b3 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2659,7 +2659,7 @@ static int intel_crtc_compute_pipe_mode(struct intel_crtc_state *crtc_state)
 	intel_mode_from_crtc_timings(pipe_mode, pipe_mode);
 
 	if (DISPLAY_VER(i915) < 4) {
-		clock_limit = i915->max_cdclk_freq * 9 / 10;
+		clock_limit = i915->display.cdclk.max_cdclk_freq * 9 / 10;
 
 		/*
 		 * Enable double wide mode when the dot clock
@@ -8394,11 +8394,11 @@ void intel_modeset_init_hw(struct drm_i915_private *i915)
 	if (!HAS_DISPLAY(i915))
 		return;
 
-	cdclk_state = to_intel_cdclk_state(i915->cdclk.obj.state);
+	cdclk_state = to_intel_cdclk_state(i915->display.cdclk.obj.state);
 
 	intel_update_cdclk(i915);
-	intel_cdclk_dump_config(i915, &i915->cdclk.hw, "Current CDCLK");
-	cdclk_state->logical = cdclk_state->actual = i915->cdclk.hw;
+	intel_cdclk_dump_config(i915, &i915->display.cdclk.hw, "Current CDCLK");
+	cdclk_state->logical = cdclk_state->actual = i915->display.cdclk.hw;
 }
 
 static int sanitize_watermarks_add_affected(struct drm_atomic_state *state)
@@ -8760,7 +8760,7 @@ int intel_modeset_init_nogem(struct drm_i915_private *i915)
 
 	intel_hdcp_component_init(i915);
 
-	if (i915->max_cdclk_freq == 0)
+	if (i915->display.cdclk.max_cdclk_freq == 0)
 		intel_update_max_cdclk(i915);
 
 	/*
-- 
cgit v1.2.3


From a434689c0adbf8986024e82767fd26b0e142dba6 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 29 Aug 2022 16:18:14 +0300
Subject: drm/i915: move vbt to display.vbt

Move display VBT related members under drm_i915_private display
sub-struct.

v2: Rebase

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/db4b648b201ea0b79654fec2028120999a735db0.1661779055.git.jani.nikula@intel.com
---
 drivers/gpu/drm/i915/display/intel_bios.c         | 212 +++++++++++-----------
 drivers/gpu/drm/i915/display/intel_crt.c          |   4 +-
 drivers/gpu/drm/i915/display/intel_display.c      |  12 +-
 drivers/gpu/drm/i915/display/intel_display_core.h |  38 ++++
 drivers/gpu/drm/i915/display/intel_dp.c           |   2 +-
 drivers/gpu/drm/i915/display/intel_dpll.c         |  14 +-
 drivers/gpu/drm/i915/display/intel_dpll_mgr.c     |  18 +-
 drivers/gpu/drm/i915/display/intel_dsi.c          |   2 +-
 drivers/gpu/drm/i915/display/intel_lvds.c         |   4 +-
 drivers/gpu/drm/i915/display/intel_panel.c        |   2 +-
 drivers/gpu/drm/i915/display/intel_pch_refclk.c   |   2 +-
 drivers/gpu/drm/i915/display/intel_sdvo.c         |  18 +-
 drivers/gpu/drm/i915/display/intel_vbt_defs.h     |   8 +-
 drivers/gpu/drm/i915/i915_drv.h                   |  37 ----
 drivers/gpu/drm/i915/intel_pm.c                   |   2 +-
 15 files changed, 188 insertions(+), 187 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index cc47c49d7e3d..a18eedca9ab3 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -159,7 +159,7 @@ find_section(struct drm_i915_private *i915,
 {
 	struct bdb_block_entry *entry;
 
-	list_for_each_entry(entry, &i915->vbt.bdb_blocks, node) {
+	list_for_each_entry(entry, &i915->display.vbt.bdb_blocks, node) {
 		if (entry->section_id == section_id)
 			return entry->data + 3;
 	}
@@ -501,7 +501,7 @@ init_bdb_block(struct drm_i915_private *i915,
 		return;
 	}
 
-	list_add_tail(&entry->node, &i915->vbt.bdb_blocks);
+	list_add_tail(&entry->node, &i915->display.vbt.bdb_blocks);
 }
 
 static void init_bdb_blocks(struct drm_i915_private *i915,
@@ -878,7 +878,7 @@ parse_lfp_data(struct drm_i915_private *i915,
 	if (!tail)
 		return;
 
-	if (i915->vbt.version >= 188) {
+	if (i915->display.vbt.version >= 188) {
 		panel->vbt.seamless_drrs_min_refresh_rate =
 			tail->seamless_drrs_min_refresh_rate[panel_type];
 		drm_dbg_kms(&i915->drm,
@@ -904,7 +904,7 @@ parse_generic_dtd(struct drm_i915_private *i915,
 	 * first on VBT >= 229, but still fall back to trying the old LFP
 	 * block if that fails.
 	 */
-	if (i915->vbt.version < 229)
+	if (i915->display.vbt.version < 229)
 		return;
 
 	generic_dtd = find_section(i915, BDB_GENERIC_DTD);
@@ -1008,12 +1008,12 @@ parse_lfp_backlight(struct drm_i915_private *i915,
 	}
 
 	panel->vbt.backlight.type = INTEL_BACKLIGHT_DISPLAY_DDI;
-	if (i915->vbt.version >= 191) {
+	if (i915->display.vbt.version >= 191) {
 		size_t exp_size;
 
-		if (i915->vbt.version >= 236)
+		if (i915->display.vbt.version >= 236)
 			exp_size = sizeof(struct bdb_lfp_backlight_data);
-		else if (i915->vbt.version >= 234)
+		else if (i915->display.vbt.version >= 234)
 			exp_size = EXP_BDB_LFP_BL_DATA_SIZE_REV_234;
 		else
 			exp_size = EXP_BDB_LFP_BL_DATA_SIZE_REV_191;
@@ -1030,14 +1030,14 @@ parse_lfp_backlight(struct drm_i915_private *i915,
 	panel->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz;
 	panel->vbt.backlight.active_low_pwm = entry->active_low_pwm;
 
-	if (i915->vbt.version >= 234) {
+	if (i915->display.vbt.version >= 234) {
 		u16 min_level;
 		bool scale;
 
 		level = backlight_data->brightness_level[panel_type].level;
 		min_level = backlight_data->brightness_min_level[panel_type].level;
 
-		if (i915->vbt.version >= 236)
+		if (i915->display.vbt.version >= 236)
 			scale = backlight_data->brightness_precision_bits[panel_type] == 16;
 		else
 			scale = level > 255;
@@ -1134,37 +1134,37 @@ parse_general_features(struct drm_i915_private *i915)
 	if (!general)
 		return;
 
-	i915->vbt.int_tv_support = general->int_tv_support;
+	i915->display.vbt.int_tv_support = general->int_tv_support;
 	/* int_crt_support can't be trusted on earlier platforms */
-	if (i915->vbt.version >= 155 &&
+	if (i915->display.vbt.version >= 155 &&
 	    (HAS_DDI(i915) || IS_VALLEYVIEW(i915)))
-		i915->vbt.int_crt_support = general->int_crt_support;
-	i915->vbt.lvds_use_ssc = general->enable_ssc;
-	i915->vbt.lvds_ssc_freq =
+		i915->display.vbt.int_crt_support = general->int_crt_support;
+	i915->display.vbt.lvds_use_ssc = general->enable_ssc;
+	i915->display.vbt.lvds_ssc_freq =
 		intel_bios_ssc_frequency(i915, general->ssc_freq);
-	i915->vbt.display_clock_mode = general->display_clock_mode;
-	i915->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
-	if (i915->vbt.version >= 181) {
-		i915->vbt.orientation = general->rotate_180 ?
+	i915->display.vbt.display_clock_mode = general->display_clock_mode;
+	i915->display.vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
+	if (i915->display.vbt.version >= 181) {
+		i915->display.vbt.orientation = general->rotate_180 ?
 			DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP :
 			DRM_MODE_PANEL_ORIENTATION_NORMAL;
 	} else {
-		i915->vbt.orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
+		i915->display.vbt.orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 	}
 
-	if (i915->vbt.version >= 249 && general->afc_startup_config) {
-		i915->vbt.override_afc_startup = true;
-		i915->vbt.override_afc_startup_val = general->afc_startup_config == 0x1 ? 0x0 : 0x7;
+	if (i915->display.vbt.version >= 249 && general->afc_startup_config) {
+		i915->display.vbt.override_afc_startup = true;
+		i915->display.vbt.override_afc_startup_val = general->afc_startup_config == 0x1 ? 0x0 : 0x7;
 	}
 
 	drm_dbg_kms(&i915->drm,
 		    "BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d fdi_rx_polarity_inverted %d\n",
-		    i915->vbt.int_tv_support,
-		    i915->vbt.int_crt_support,
-		    i915->vbt.lvds_use_ssc,
-		    i915->vbt.lvds_ssc_freq,
-		    i915->vbt.display_clock_mode,
-		    i915->vbt.fdi_rx_polarity_inverted);
+		    i915->display.vbt.int_tv_support,
+		    i915->display.vbt.int_crt_support,
+		    i915->display.vbt.lvds_use_ssc,
+		    i915->display.vbt.lvds_ssc_freq,
+		    i915->display.vbt.display_clock_mode,
+		    i915->display.vbt.fdi_rx_polarity_inverted);
 }
 
 static const struct child_device_config *
@@ -1190,7 +1190,7 @@ parse_sdvo_device_mapping(struct drm_i915_private *i915)
 		return;
 	}
 
-	list_for_each_entry(devdata, &i915->vbt.display_devices, node) {
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
 		child = &devdata->child;
 
 		if (child->slave_addr != SLAVE_ADDR1 &&
@@ -1214,7 +1214,7 @@ parse_sdvo_device_mapping(struct drm_i915_private *i915)
 			    child->slave_addr,
 			    (child->dvo_port == DEVICE_PORT_DVOB) ?
 			    "SDVOB" : "SDVOC");
-		mapping = &i915->vbt.sdvo_mappings[child->dvo_port - 1];
+		mapping = &i915->display.vbt.sdvo_mappings[child->dvo_port - 1];
 		if (!mapping->initialized) {
 			mapping->dvo_port = child->dvo_port;
 			mapping->slave_addr = child->slave_addr;
@@ -1265,7 +1265,7 @@ parse_driver_features(struct drm_i915_private *i915)
 		 * interpretation, but real world VBTs seem to.
 		 */
 		if (driver->lvds_config != BDB_DRIVER_FEATURE_INT_LVDS)
-			i915->vbt.int_lvds_support = 0;
+			i915->display.vbt.int_lvds_support = 0;
 	} else {
 		/*
 		 * FIXME it's not clear which BDB version has the LVDS config
@@ -1278,10 +1278,10 @@ parse_driver_features(struct drm_i915_private *i915)
 		 * in the wild with the bits correctly populated. Version
 		 * 108 (on i85x) does not have the bits correctly populated.
 		 */
-		if (i915->vbt.version >= 134 &&
+		if (i915->display.vbt.version >= 134 &&
 		    driver->lvds_config != BDB_DRIVER_FEATURE_INT_LVDS &&
 		    driver->lvds_config != BDB_DRIVER_FEATURE_INT_SDVO_LVDS)
-			i915->vbt.int_lvds_support = 0;
+			i915->display.vbt.int_lvds_support = 0;
 	}
 }
 
@@ -1295,7 +1295,7 @@ parse_panel_driver_features(struct drm_i915_private *i915,
 	if (!driver)
 		return;
 
-	if (i915->vbt.version < 228) {
+	if (i915->display.vbt.version < 228) {
 		drm_dbg_kms(&i915->drm, "DRRS State Enabled:%d\n",
 			    driver->drrs_enabled);
 		/*
@@ -1328,7 +1328,7 @@ parse_power_conservation_features(struct drm_i915_private *i915,
 
 	panel->vbt.vrr = true; /* matches Windows behaviour */
 
-	if (i915->vbt.version < 228)
+	if (i915->display.vbt.version < 228)
 		return;
 
 	power = find_section(i915, BDB_LFP_POWER);
@@ -1354,10 +1354,10 @@ parse_power_conservation_features(struct drm_i915_private *i915,
 			panel->vbt.drrs_type = DRRS_TYPE_NONE;
 	}
 
-	if (i915->vbt.version >= 232)
+	if (i915->display.vbt.version >= 232)
 		panel->vbt.edp.hobl = panel_bool(power->hobl, panel_type);
 
-	if (i915->vbt.version >= 233)
+	if (i915->display.vbt.version >= 233)
 		panel->vbt.vrr = panel_bool(power->vrr_feature_enabled,
 					    panel_type);
 }
@@ -1393,7 +1393,7 @@ parse_edp(struct drm_i915_private *i915,
 
 	panel->vbt.edp.pps = *edp_pps;
 
-	if (i915->vbt.version >= 224) {
+	if (i915->display.vbt.version >= 224) {
 		panel->vbt.edp.rate =
 			edp->edp_fast_link_training_rate[panel_type] * 20;
 	} else {
@@ -1472,7 +1472,7 @@ parse_edp(struct drm_i915_private *i915,
 		break;
 	}
 
-	if (i915->vbt.version >= 173) {
+	if (i915->display.vbt.version >= 173) {
 		u8 vswing;
 
 		/* Don't read from VBT if module parameter has valid value*/
@@ -1488,7 +1488,7 @@ parse_edp(struct drm_i915_private *i915,
 	panel->vbt.edp.drrs_msa_timing_delay =
 		panel_bits(edp->sdrrs_msa_timing_delay, panel_type, 2);
 
-	if (i915->vbt.version >= 244)
+	if (i915->display.vbt.version >= 244)
 		panel->vbt.edp.max_link_rate =
 			edp->edp_max_port_link_rate[panel_type] * 20;
 }
@@ -1520,7 +1520,7 @@ parse_psr(struct drm_i915_private *i915,
 	 * New psr options 0=500us, 1=100us, 2=2500us, 3=0us
 	 * Old decimal value is wake up time in multiples of 100 us.
 	 */
-	if (i915->vbt.version >= 205 &&
+	if (i915->display.vbt.version >= 205 &&
 	    (DISPLAY_VER(i915) >= 9 && !IS_BROXTON(i915))) {
 		switch (psr_table->tp1_wakeup_time) {
 		case 0:
@@ -1566,7 +1566,7 @@ parse_psr(struct drm_i915_private *i915,
 		panel->vbt.psr.tp2_tp3_wakeup_time_us = psr_table->tp2_tp3_wakeup_time * 100;
 	}
 
-	if (i915->vbt.version >= 226) {
+	if (i915->display.vbt.version >= 226) {
 		u32 wakeup_time = psr->psr2_tp2_tp3_wakeup_time;
 
 		wakeup_time = panel_bits(wakeup_time, panel_type, 2);
@@ -1598,7 +1598,7 @@ static void parse_dsi_backlight_ports(struct drm_i915_private *i915,
 {
 	enum port port_bc = DISPLAY_VER(i915) >= 11 ? PORT_B : PORT_C;
 
-	if (!panel->vbt.dsi.config->dual_link || i915->vbt.version < 197) {
+	if (!panel->vbt.dsi.config->dual_link || i915->display.vbt.version < 197) {
 		panel->vbt.dsi.bl_ports = BIT(port);
 		if (panel->vbt.dsi.config->cabc_supported)
 			panel->vbt.dsi.cabc_ports = BIT(port);
@@ -2053,7 +2053,7 @@ parse_compression_parameters(struct drm_i915_private *i915)
 	u16 block_size;
 	int index;
 
-	if (i915->vbt.version < 198)
+	if (i915->display.vbt.version < 198)
 		return;
 
 	params = find_section(i915, BDB_COMPRESSION_PARAMETERS);
@@ -2073,7 +2073,7 @@ parse_compression_parameters(struct drm_i915_private *i915)
 		}
 	}
 
-	list_for_each_entry(devdata, &i915->vbt.display_devices, node) {
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
 		child = &devdata->child;
 
 		if (!child->compression_enable)
@@ -2207,7 +2207,7 @@ static enum port get_port_by_ddc_pin(struct drm_i915_private *i915, u8 ddc_pin)
 		return PORT_NONE;
 
 	for_each_port(port) {
-		devdata = i915->vbt.ports[port];
+		devdata = i915->display.vbt.ports[port];
 
 		if (devdata && ddc_pin == devdata->child.ddc_pin)
 			return port;
@@ -2256,7 +2256,7 @@ static void sanitize_ddc_pin(struct intel_bios_encoder_data *devdata,
 	 * there are real machines (eg. Asrock B250M-HDV) where VBT has both
 	 * port A and port E with the same AUX ch and we must pick port E :(
 	 */
-	child = &i915->vbt.ports[p]->child;
+	child = &i915->display.vbt.ports[p]->child;
 
 	child->device_type &= ~DEVICE_TYPE_TMDS_DVI_SIGNALING;
 	child->device_type |= DEVICE_TYPE_NOT_HDMI_OUTPUT;
@@ -2273,7 +2273,7 @@ static enum port get_port_by_aux_ch(struct drm_i915_private *i915, u8 aux_ch)
 		return PORT_NONE;
 
 	for_each_port(port) {
-		devdata = i915->vbt.ports[port];
+		devdata = i915->display.vbt.ports[port];
 
 		if (devdata && aux_ch == devdata->child.aux_channel)
 			return port;
@@ -2308,7 +2308,7 @@ static void sanitize_aux_ch(struct intel_bios_encoder_data *devdata,
 	 * there are real machines (eg. Asrock B250M-HDV) where VBT has both
 	 * port A and port E with the same AUX ch and we must pick port E :(
 	 */
-	child = &i915->vbt.ports[p]->child;
+	child = &i915->display.vbt.ports[p]->child;
 
 	child->device_type &= ~DEVICE_TYPE_DISPLAYPORT_OUTPUT;
 	child->aux_channel = 0;
@@ -2482,10 +2482,10 @@ static int parse_bdb_216_dp_max_link_rate(const int vbt_max_link_rate)
 
 static int _intel_bios_dp_max_link_rate(const struct intel_bios_encoder_data *devdata)
 {
-	if (!devdata || devdata->i915->vbt.version < 216)
+	if (!devdata || devdata->i915->display.vbt.version < 216)
 		return 0;
 
-	if (devdata->i915->vbt.version >= 230)
+	if (devdata->i915->display.vbt.version >= 230)
 		return parse_bdb_230_dp_max_link_rate(devdata->child.dp_max_link_rate);
 	else
 		return parse_bdb_216_dp_max_link_rate(devdata->child.dp_max_link_rate);
@@ -2546,7 +2546,7 @@ intel_bios_encoder_supports_edp(const struct intel_bios_encoder_data *devdata)
 
 static int _intel_bios_hdmi_level_shift(const struct intel_bios_encoder_data *devdata)
 {
-	if (!devdata || devdata->i915->vbt.version < 158)
+	if (!devdata || devdata->i915->display.vbt.version < 158)
 		return -1;
 
 	return devdata->child.hdmi_level_shifter_value;
@@ -2554,7 +2554,7 @@ static int _intel_bios_hdmi_level_shift(const struct intel_bios_encoder_data *de
 
 static int _intel_bios_max_tmds_clock(const struct intel_bios_encoder_data *devdata)
 {
-	if (!devdata || devdata->i915->vbt.version < 204)
+	if (!devdata || devdata->i915->display.vbt.version < 204)
 		return 0;
 
 	switch (devdata->child.hdmi_max_data_rate) {
@@ -2663,7 +2663,7 @@ static void parse_ddi_port(struct intel_bios_encoder_data *devdata)
 		return;
 	}
 
-	if (i915->vbt.ports[port]) {
+	if (i915->display.vbt.ports[port]) {
 		drm_dbg_kms(&i915->drm,
 			    "More than one child device for port %c in VBT, using the first.\n",
 			    port_name(port));
@@ -2678,7 +2678,7 @@ static void parse_ddi_port(struct intel_bios_encoder_data *devdata)
 	if (intel_bios_encoder_supports_dp(devdata))
 		sanitize_aux_ch(devdata, port);
 
-	i915->vbt.ports[port] = devdata;
+	i915->display.vbt.ports[port] = devdata;
 }
 
 static bool has_ddi_port_info(struct drm_i915_private *i915)
@@ -2694,12 +2694,12 @@ static void parse_ddi_ports(struct drm_i915_private *i915)
 	if (!has_ddi_port_info(i915))
 		return;
 
-	list_for_each_entry(devdata, &i915->vbt.display_devices, node)
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node)
 		parse_ddi_port(devdata);
 
 	for_each_port(port) {
-		if (i915->vbt.ports[port])
-			print_ddi_port(i915->vbt.ports[port], port);
+		if (i915->display.vbt.ports[port])
+			print_ddi_port(i915->display.vbt.ports[port], port);
 	}
 }
 
@@ -2732,33 +2732,33 @@ parse_general_definitions(struct drm_i915_private *i915)
 	bus_pin = defs->crt_ddc_gmbus_pin;
 	drm_dbg_kms(&i915->drm, "crt_ddc_bus_pin: %d\n", bus_pin);
 	if (intel_gmbus_is_valid_pin(i915, bus_pin))
-		i915->vbt.crt_ddc_pin = bus_pin;
+		i915->display.vbt.crt_ddc_pin = bus_pin;
 
-	if (i915->vbt.version < 106) {
+	if (i915->display.vbt.version < 106) {
 		expected_size = 22;
-	} else if (i915->vbt.version < 111) {
+	} else if (i915->display.vbt.version < 111) {
 		expected_size = 27;
-	} else if (i915->vbt.version < 195) {
+	} else if (i915->display.vbt.version < 195) {
 		expected_size = LEGACY_CHILD_DEVICE_CONFIG_SIZE;
-	} else if (i915->vbt.version == 195) {
+	} else if (i915->display.vbt.version == 195) {
 		expected_size = 37;
-	} else if (i915->vbt.version <= 215) {
+	} else if (i915->display.vbt.version <= 215) {
 		expected_size = 38;
-	} else if (i915->vbt.version <= 237) {
+	} else if (i915->display.vbt.version <= 237) {
 		expected_size = 39;
 	} else {
 		expected_size = sizeof(*child);
 		BUILD_BUG_ON(sizeof(*child) < 39);
 		drm_dbg(&i915->drm,
 			"Expected child device config size for VBT version %u not known; assuming %u\n",
-			i915->vbt.version, expected_size);
+			i915->display.vbt.version, expected_size);
 	}
 
 	/* Flag an error for unexpected size, but continue anyway. */
 	if (defs->child_dev_size != expected_size)
 		drm_err(&i915->drm,
 			"Unexpected child device config size %u (expected %u for VBT version %u)\n",
-			defs->child_dev_size, expected_size, i915->vbt.version);
+			defs->child_dev_size, expected_size, i915->display.vbt.version);
 
 	/* The legacy sized child device config is the minimum we need. */
 	if (defs->child_dev_size < LEGACY_CHILD_DEVICE_CONFIG_SIZE) {
@@ -2794,10 +2794,10 @@ parse_general_definitions(struct drm_i915_private *i915)
 		memcpy(&devdata->child, child,
 		       min_t(size_t, defs->child_dev_size, sizeof(*child)));
 
-		list_add_tail(&devdata->node, &i915->vbt.display_devices);
+		list_add_tail(&devdata->node, &i915->display.vbt.display_devices);
 	}
 
-	if (list_empty(&i915->vbt.display_devices))
+	if (list_empty(&i915->display.vbt.display_devices))
 		drm_dbg_kms(&i915->drm,
 			    "no child dev is parsed from VBT\n");
 }
@@ -2806,25 +2806,25 @@ parse_general_definitions(struct drm_i915_private *i915)
 static void
 init_vbt_defaults(struct drm_i915_private *i915)
 {
-	i915->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC;
+	i915->display.vbt.crt_ddc_pin = GMBUS_PIN_VGADDC;
 
 	/* general features */
-	i915->vbt.int_tv_support = 1;
-	i915->vbt.int_crt_support = 1;
+	i915->display.vbt.int_tv_support = 1;
+	i915->display.vbt.int_crt_support = 1;
 
 	/* driver features */
-	i915->vbt.int_lvds_support = 1;
+	i915->display.vbt.int_lvds_support = 1;
 
 	/* Default to using SSC */
-	i915->vbt.lvds_use_ssc = 1;
+	i915->display.vbt.lvds_use_ssc = 1;
 	/*
 	 * Core/SandyBridge/IvyBridge use alternative (120MHz) reference
 	 * clock for LVDS.
 	 */
-	i915->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(i915,
-							   !HAS_PCH_SPLIT(i915));
+	i915->display.vbt.lvds_ssc_freq = intel_bios_ssc_frequency(i915,
+								   !HAS_PCH_SPLIT(i915));
 	drm_dbg_kms(&i915->drm, "Set default to SSC at %d kHz\n",
-		    i915->vbt.lvds_ssc_freq);
+		    i915->display.vbt.lvds_ssc_freq);
 }
 
 /* Common defaults which may be overridden by VBT. */
@@ -2885,7 +2885,7 @@ init_vbt_missing_defaults(struct drm_i915_private *i915)
 		if (port == PORT_A)
 			child->device_type |= DEVICE_TYPE_INTERNAL_CONNECTOR;
 
-		list_add_tail(&devdata->node, &i915->vbt.display_devices);
+		list_add_tail(&devdata->node, &i915->display.vbt.display_devices);
 
 		drm_dbg_kms(&i915->drm,
 			    "Generating default VBT child device with type 0x04%x on port %c\n",
@@ -2893,7 +2893,7 @@ init_vbt_missing_defaults(struct drm_i915_private *i915)
 	}
 
 	/* Bypass some minimum baseline VBT version checks */
-	i915->vbt.version = 155;
+	i915->display.vbt.version = 155;
 }
 
 static const struct bdb_header *get_bdb_header(const struct vbt_header *vbt)
@@ -3084,8 +3084,8 @@ void intel_bios_init(struct drm_i915_private *i915)
 	struct vbt_header *oprom_vbt = NULL;
 	const struct bdb_header *bdb;
 
-	INIT_LIST_HEAD(&i915->vbt.display_devices);
-	INIT_LIST_HEAD(&i915->vbt.bdb_blocks);
+	INIT_LIST_HEAD(&i915->display.vbt.display_devices);
+	INIT_LIST_HEAD(&i915->display.vbt.bdb_blocks);
 
 	if (!HAS_DISPLAY(i915)) {
 		drm_dbg_kms(&i915->drm,
@@ -3113,11 +3113,11 @@ void intel_bios_init(struct drm_i915_private *i915)
 		goto out;
 
 	bdb = get_bdb_header(vbt);
-	i915->vbt.version = bdb->version;
+	i915->display.vbt.version = bdb->version;
 
 	drm_dbg_kms(&i915->drm,
 		    "VBT signature \"%.*s\", BDB version %d\n",
-		    (int)sizeof(vbt->signature), vbt->signature, i915->vbt.version);
+		    (int)sizeof(vbt->signature), vbt->signature, i915->display.vbt.version);
 
 	init_bdb_blocks(i915, bdb);
 
@@ -3174,13 +3174,13 @@ void intel_bios_driver_remove(struct drm_i915_private *i915)
 	struct intel_bios_encoder_data *devdata, *nd;
 	struct bdb_block_entry *entry, *ne;
 
-	list_for_each_entry_safe(devdata, nd, &i915->vbt.display_devices, node) {
+	list_for_each_entry_safe(devdata, nd, &i915->display.vbt.display_devices, node) {
 		list_del(&devdata->node);
 		kfree(devdata->dsc);
 		kfree(devdata);
 	}
 
-	list_for_each_entry_safe(entry, ne, &i915->vbt.bdb_blocks, node) {
+	list_for_each_entry_safe(entry, ne, &i915->display.vbt.bdb_blocks, node) {
 		list_del(&entry->node);
 		kfree(entry);
 	}
@@ -3214,13 +3214,13 @@ bool intel_bios_is_tv_present(struct drm_i915_private *i915)
 	const struct intel_bios_encoder_data *devdata;
 	const struct child_device_config *child;
 
-	if (!i915->vbt.int_tv_support)
+	if (!i915->display.vbt.int_tv_support)
 		return false;
 
-	if (list_empty(&i915->vbt.display_devices))
+	if (list_empty(&i915->display.vbt.display_devices))
 		return true;
 
-	list_for_each_entry(devdata, &i915->vbt.display_devices, node) {
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
 		child = &devdata->child;
 
 		/*
@@ -3257,10 +3257,10 @@ bool intel_bios_is_lvds_present(struct drm_i915_private *i915, u8 *i2c_pin)
 	const struct intel_bios_encoder_data *devdata;
 	const struct child_device_config *child;
 
-	if (list_empty(&i915->vbt.display_devices))
+	if (list_empty(&i915->display.vbt.display_devices))
 		return true;
 
-	list_for_each_entry(devdata, &i915->vbt.display_devices, node) {
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
 		child = &devdata->child;
 
 		/* If the device type is not LFP, continue.
@@ -3306,7 +3306,7 @@ bool intel_bios_is_port_present(struct drm_i915_private *i915, enum port port)
 	if (WARN_ON(!has_ddi_port_info(i915)))
 		return true;
 
-	return i915->vbt.ports[port];
+	return i915->display.vbt.ports[port];
 }
 
 /**
@@ -3366,7 +3366,7 @@ bool intel_bios_is_dsi_present(struct drm_i915_private *i915,
 	const struct child_device_config *child;
 	u8 dvo_port;
 
-	list_for_each_entry(devdata, &i915->vbt.display_devices, node) {
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
 		child = &devdata->child;
 
 		if (!(child->device_type & DEVICE_TYPE_MIPI_OUTPUT))
@@ -3465,7 +3465,7 @@ bool intel_bios_get_dsc_params(struct intel_encoder *encoder,
 	const struct intel_bios_encoder_data *devdata;
 	const struct child_device_config *child;
 
-	list_for_each_entry(devdata, &i915->vbt.display_devices, node) {
+	list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
 		child = &devdata->child;
 
 		if (!(child->device_type & DEVICE_TYPE_MIPI_OUTPUT))
@@ -3496,7 +3496,7 @@ bool
 intel_bios_is_port_hpd_inverted(const struct drm_i915_private *i915,
 				enum port port)
 {
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[port];
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[port];
 
 	if (drm_WARN_ON_ONCE(&i915->drm,
 			     !IS_GEMINILAKE(i915) && !IS_BROXTON(i915)))
@@ -3516,7 +3516,7 @@ bool
 intel_bios_is_lspcon_present(const struct drm_i915_private *i915,
 			     enum port port)
 {
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[port];
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[port];
 
 	return HAS_LSPCON(i915) && devdata && devdata->child.lspcon;
 }
@@ -3532,7 +3532,7 @@ bool
 intel_bios_is_lane_reversal_needed(const struct drm_i915_private *i915,
 				   enum port port)
 {
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[port];
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[port];
 
 	return devdata && devdata->child.lane_reversal;
 }
@@ -3540,7 +3540,7 @@ intel_bios_is_lane_reversal_needed(const struct drm_i915_private *i915,
 enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *i915,
 				   enum port port)
 {
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[port];
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[port];
 	enum aux_ch aux_ch;
 
 	if (!devdata || !devdata->child.aux_channel) {
@@ -3634,7 +3634,7 @@ enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *i915,
 int intel_bios_max_tmds_clock(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[encoder->port];
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[encoder->port];
 
 	return _intel_bios_max_tmds_clock(devdata);
 }
@@ -3643,14 +3643,14 @@ int intel_bios_max_tmds_clock(struct intel_encoder *encoder)
 int intel_bios_hdmi_level_shift(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[encoder->port];
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[encoder->port];
 
 	return _intel_bios_hdmi_level_shift(devdata);
 }
 
 int intel_bios_encoder_dp_boost_level(const struct intel_bios_encoder_data *devdata)
 {
-	if (!devdata || devdata->i915->vbt.version < 196 || !devdata->child.iboost)
+	if (!devdata || devdata->i915->display.vbt.version < 196 || !devdata->child.iboost)
 		return 0;
 
 	return translate_iboost(devdata->child.dp_iboost_level);
@@ -3658,7 +3658,7 @@ int intel_bios_encoder_dp_boost_level(const struct intel_bios_encoder_data *devd
 
 int intel_bios_encoder_hdmi_boost_level(const struct intel_bios_encoder_data *devdata)
 {
-	if (!devdata || devdata->i915->vbt.version < 196 || !devdata->child.iboost)
+	if (!devdata || devdata->i915->display.vbt.version < 196 || !devdata->child.iboost)
 		return 0;
 
 	return translate_iboost(devdata->child.hdmi_iboost_level);
@@ -3667,7 +3667,7 @@ int intel_bios_encoder_hdmi_boost_level(const struct intel_bios_encoder_data *de
 int intel_bios_dp_max_link_rate(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[encoder->port];
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[encoder->port];
 
 	return _intel_bios_dp_max_link_rate(devdata);
 }
@@ -3675,7 +3675,7 @@ int intel_bios_dp_max_link_rate(struct intel_encoder *encoder)
 int intel_bios_alternate_ddc_pin(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	const struct intel_bios_encoder_data *devdata = i915->vbt.ports[encoder->port];
+	const struct intel_bios_encoder_data *devdata = i915->display.vbt.ports[encoder->port];
 
 	if (!devdata || !devdata->child.ddc_pin)
 		return 0;
@@ -3685,16 +3685,16 @@ int intel_bios_alternate_ddc_pin(struct intel_encoder *encoder)
 
 bool intel_bios_encoder_supports_typec_usb(const struct intel_bios_encoder_data *devdata)
 {
-	return devdata->i915->vbt.version >= 195 && devdata->child.dp_usb_type_c;
+	return devdata->i915->display.vbt.version >= 195 && devdata->child.dp_usb_type_c;
 }
 
 bool intel_bios_encoder_supports_tbt(const struct intel_bios_encoder_data *devdata)
 {
-	return devdata->i915->vbt.version >= 209 && devdata->child.tbt;
+	return devdata->i915->display.vbt.version >= 209 && devdata->child.tbt;
 }
 
 const struct intel_bios_encoder_data *
 intel_bios_encoder_data_lookup(struct drm_i915_private *i915, enum port port)
 {
-	return i915->vbt.ports[port];
+	return i915->display.vbt.ports[port];
 }
diff --git a/drivers/gpu/drm/i915/display/intel_crt.c b/drivers/gpu/drm/i915/display/intel_crt.c
index 6a3893c8ff22..760b5788eb43 100644
--- a/drivers/gpu/drm/i915/display/intel_crt.c
+++ b/drivers/gpu/drm/i915/display/intel_crt.c
@@ -645,7 +645,7 @@ static bool intel_crt_detect_ddc(struct drm_connector *connector)
 
 	BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG);
 
-	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
+	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->display.vbt.crt_ddc_pin);
 	edid = intel_crt_get_edid(connector, i2c);
 
 	if (edid) {
@@ -931,7 +931,7 @@ static int intel_crt_get_modes(struct drm_connector *connector)
 	wakeref = intel_display_power_get(dev_priv,
 					  intel_encoder->power_domain);
 
-	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
+	i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->display.vbt.crt_ddc_pin);
 	ret = intel_crt_ddc_get_modes(connector, i2c);
 	if (ret || !IS_G4X(dev_priv))
 		goto out;
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f2f7055ee1b3..0eac552551fa 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2772,12 +2772,12 @@ static void intel_panel_sanitize_ssc(struct drm_i915_private *dev_priv)
 						       PCH_DREF_CONTROL) &
 			DREF_SSC1_ENABLE;
 
-		if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) {
+		if (dev_priv->display.vbt.lvds_use_ssc != bios_lvds_use_ssc) {
 			drm_dbg_kms(&dev_priv->drm,
 				    "SSC %s by BIOS, overriding VBT which says %s\n",
 				    str_enabled_disabled(bios_lvds_use_ssc),
-				    str_enabled_disabled(dev_priv->vbt.lvds_use_ssc));
-			dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc;
+				    str_enabled_disabled(dev_priv->display.vbt.lvds_use_ssc));
+			dev_priv->display.vbt.lvds_use_ssc = bios_lvds_use_ssc;
 		}
 	}
 }
@@ -4373,7 +4373,7 @@ static int i9xx_pll_refclk(struct drm_device *dev,
 	u32 dpll = pipe_config->dpll_hw_state.dpll;
 
 	if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
-		return dev_priv->vbt.lvds_ssc_freq;
+		return dev_priv->display.vbt.lvds_ssc_freq;
 	else if (HAS_PCH_SPLIT(dev_priv))
 		return 120000;
 	else if (DISPLAY_VER(dev_priv) != 2)
@@ -7923,7 +7923,7 @@ static bool intel_ddi_crt_present(struct drm_i915_private *dev_priv)
 	if (intel_de_read(dev_priv, DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)
 		return false;
 
-	if (!dev_priv->vbt.int_crt_support)
+	if (!dev_priv->display.vbt.int_crt_support)
 		return false;
 
 	return true;
@@ -8058,7 +8058,7 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
 	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 		bool has_edp, has_port;
 
-		if (IS_VALLEYVIEW(dev_priv) && dev_priv->vbt.int_crt_support)
+		if (IS_VALLEYVIEW(dev_priv) && dev_priv->display.vbt.int_crt_support)
 			intel_crt_init(dev_priv);
 
 		/*
diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h
index 63ff660b9479..4eeb6a8caf67 100644
--- a/drivers/gpu/drm/i915/display/intel_display_core.h
+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
@@ -6,11 +6,14 @@
 #ifndef __INTEL_DISPLAY_CORE_H__
 #define __INTEL_DISPLAY_CORE_H__
 
+#include <linux/list.h>
 #include <linux/mutex.h>
 #include <linux/types.h>
 #include <linux/wait.h>
 #include <linux/workqueue.h>
 
+#include <drm/drm_connector.h>
+
 #include "intel_cdclk.h"
 #include "intel_display.h"
 #include "intel_dmc.h"
@@ -25,6 +28,7 @@ struct i915_audio_component;
 struct i915_hdcp_comp_master;
 struct intel_atomic_state;
 struct intel_audio_funcs;
+struct intel_bios_encoder_data;
 struct intel_cdclk_funcs;
 struct intel_cdclk_vals;
 struct intel_color_funcs;
@@ -153,6 +157,39 @@ struct intel_hotplug {
 	struct workqueue_struct *dp_wq;
 };
 
+struct intel_vbt_data {
+	/* bdb version */
+	u16 version;
+
+	/* Feature bits */
+	unsigned int int_tv_support:1;
+	unsigned int int_crt_support:1;
+	unsigned int lvds_use_ssc:1;
+	unsigned int int_lvds_support:1;
+	unsigned int display_clock_mode:1;
+	unsigned int fdi_rx_polarity_inverted:1;
+	int lvds_ssc_freq;
+	enum drm_panel_orientation orientation;
+
+	bool override_afc_startup;
+	u8 override_afc_startup_val;
+
+	int crt_ddc_pin;
+
+	struct list_head display_devices;
+	struct list_head bdb_blocks;
+
+	struct intel_bios_encoder_data *ports[I915_MAX_PORTS]; /* Non-NULL if port present. */
+	struct sdvo_device_mapping {
+		u8 initialized;
+		u8 dvo_port;
+		u8 slave_addr;
+		u8 dvo_wiring;
+		u8 i2c_pin;
+		u8 ddc_pin;
+	} sdvo_mappings[2];
+};
+
 struct intel_wm {
 	/*
 	 * Raw watermark latency values:
@@ -311,6 +348,7 @@ struct intel_display {
 	struct intel_hotplug hotplug;
 	struct intel_opregion opregion;
 	struct intel_overlay *overlay;
+	struct intel_vbt_data vbt;
 	struct intel_wm wm;
 };
 
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index dc8ac123c51f..e2a0a0ed3695 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5193,7 +5193,7 @@ intel_edp_add_properties(struct intel_dp *intel_dp)
 		return;
 
 	drm_connector_set_panel_orientation_with_quirk(&connector->base,
-						       i915->vbt.orientation,
+						       i915->display.vbt.orientation,
 						       fixed_mode->hdisplay,
 						       fixed_mode->vdisplay);
 }
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
index 87899702a522..81655fdf2c89 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -991,7 +991,7 @@ static void ilk_update_pll_dividers(struct intel_crtc_state *crtc_state,
 	factor = 21;
 	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
 		if ((intel_panel_use_ssc(dev_priv) &&
-		     dev_priv->vbt.lvds_ssc_freq == 100000) ||
+		     dev_priv->display.vbt.lvds_ssc_freq == 100000) ||
 		    (HAS_PCH_IBX(dev_priv) &&
 		     intel_is_dual_link_lvds(dev_priv)))
 			factor = 25;
@@ -1105,8 +1105,8 @@ static int ilk_crtc_compute_clock(struct intel_atomic_state *state,
 		if (intel_panel_use_ssc(dev_priv)) {
 			drm_dbg_kms(&dev_priv->drm,
 				    "using SSC reference clock of %d kHz\n",
-				    dev_priv->vbt.lvds_ssc_freq);
-			refclk = dev_priv->vbt.lvds_ssc_freq;
+				    dev_priv->display.vbt.lvds_ssc_freq);
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
 		}
 
 		if (intel_is_dual_link_lvds(dev_priv)) {
@@ -1231,7 +1231,7 @@ static int g4x_crtc_compute_clock(struct intel_atomic_state *state,
 
 	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
 		if (intel_panel_use_ssc(dev_priv)) {
-			refclk = dev_priv->vbt.lvds_ssc_freq;
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
 			drm_dbg_kms(&dev_priv->drm,
 				    "using SSC reference clock of %d kHz\n",
 				    refclk);
@@ -1273,7 +1273,7 @@ static int pnv_crtc_compute_clock(struct intel_atomic_state *state,
 
 	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
 		if (intel_panel_use_ssc(dev_priv)) {
-			refclk = dev_priv->vbt.lvds_ssc_freq;
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
 			drm_dbg_kms(&dev_priv->drm,
 				    "using SSC reference clock of %d kHz\n",
 				    refclk);
@@ -1306,7 +1306,7 @@ static int i9xx_crtc_compute_clock(struct intel_atomic_state *state,
 
 	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
 		if (intel_panel_use_ssc(dev_priv)) {
-			refclk = dev_priv->vbt.lvds_ssc_freq;
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
 			drm_dbg_kms(&dev_priv->drm,
 				    "using SSC reference clock of %d kHz\n",
 				    refclk);
@@ -1339,7 +1339,7 @@ static int i8xx_crtc_compute_clock(struct intel_atomic_state *state,
 
 	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
 		if (intel_panel_use_ssc(dev_priv)) {
-			refclk = dev_priv->vbt.lvds_ssc_freq;
+			refclk = dev_priv->display.vbt.lvds_ssc_freq;
 			drm_dbg_kms(&dev_priv->drm,
 				    "using SSC reference clock of %d kHz\n",
 				    refclk);
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index d324bc8b5ef0..4c79e15d156d 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -2769,8 +2769,8 @@ static void icl_calc_dpll_state(struct drm_i915_private *i915,
 	else
 		pll_state->cfgcr1 |= DPLL_CFGCR1_CENTRAL_FREQ_8400;
 
-	if (i915->vbt.override_afc_startup)
-		pll_state->div0 = TGL_DPLL0_DIV0_AFC_STARTUP(i915->vbt.override_afc_startup_val);
+	if (i915->display.vbt.override_afc_startup)
+		pll_state->div0 = TGL_DPLL0_DIV0_AFC_STARTUP(i915->display.vbt.override_afc_startup_val);
 }
 
 static int icl_mg_pll_find_divisors(int clock_khz, bool is_dp, bool use_ssc,
@@ -2965,8 +2965,8 @@ static int icl_calc_mg_pll_state(struct intel_crtc_state *crtc_state,
 					 DKL_PLL_DIV0_PROP_COEFF(prop_coeff) |
 					 DKL_PLL_DIV0_FBPREDIV(m1div) |
 					 DKL_PLL_DIV0_FBDIV_INT(m2div_int);
-		if (dev_priv->vbt.override_afc_startup) {
-			u8 val = dev_priv->vbt.override_afc_startup_val;
+		if (dev_priv->display.vbt.override_afc_startup) {
+			u8 val = dev_priv->display.vbt.override_afc_startup_val;
 
 			pll_state->mg_pll_div0 |= DKL_PLL_DIV0_AFC_STARTUP(val);
 		}
@@ -3502,7 +3502,7 @@ static bool dkl_pll_get_hw_state(struct drm_i915_private *dev_priv,
 
 	hw_state->mg_pll_div0 = intel_de_read(dev_priv, DKL_PLL_DIV0(tc_port));
 	val = DKL_PLL_DIV0_MASK;
-	if (dev_priv->vbt.override_afc_startup)
+	if (dev_priv->display.vbt.override_afc_startup)
 		val |= DKL_PLL_DIV0_AFC_STARTUP_MASK;
 	hw_state->mg_pll_div0 &= val;
 
@@ -3566,7 +3566,7 @@ static bool icl_pll_get_hw_state(struct drm_i915_private *dev_priv,
 						 TGL_DPLL_CFGCR0(id));
 		hw_state->cfgcr1 = intel_de_read(dev_priv,
 						 TGL_DPLL_CFGCR1(id));
-		if (dev_priv->vbt.override_afc_startup) {
+		if (dev_priv->display.vbt.override_afc_startup) {
 			hw_state->div0 = intel_de_read(dev_priv, TGL_DPLL0_DIV0(id));
 			hw_state->div0 &= TGL_DPLL0_DIV0_AFC_STARTUP_MASK;
 		}
@@ -3638,9 +3638,9 @@ static void icl_dpll_write(struct drm_i915_private *dev_priv,
 
 	intel_de_write(dev_priv, cfgcr0_reg, hw_state->cfgcr0);
 	intel_de_write(dev_priv, cfgcr1_reg, hw_state->cfgcr1);
-	drm_WARN_ON_ONCE(&dev_priv->drm, dev_priv->vbt.override_afc_startup &&
+	drm_WARN_ON_ONCE(&dev_priv->drm, dev_priv->display.vbt.override_afc_startup &&
 			 !i915_mmio_reg_valid(div0_reg));
-	if (dev_priv->vbt.override_afc_startup &&
+	if (dev_priv->display.vbt.override_afc_startup &&
 	    i915_mmio_reg_valid(div0_reg))
 		intel_de_rmw(dev_priv, div0_reg, TGL_DPLL0_DIV0_AFC_STARTUP_MASK,
 			     hw_state->div0);
@@ -3732,7 +3732,7 @@ static void dkl_pll_write(struct drm_i915_private *dev_priv,
 	intel_de_write(dev_priv, DKL_CLKTOP2_HSCLKCTL(tc_port), val);
 
 	val = DKL_PLL_DIV0_MASK;
-	if (dev_priv->vbt.override_afc_startup)
+	if (dev_priv->display.vbt.override_afc_startup)
 		val |= DKL_PLL_DIV0_AFC_STARTUP_MASK;
 	intel_de_rmw(dev_priv, DKL_PLL_DIV0(tc_port), val,
 		     hw_state->mg_pll_div0);
diff --git a/drivers/gpu/drm/i915/display/intel_dsi.c b/drivers/gpu/drm/i915/display/intel_dsi.c
index 35e121cd226c..5efdd471ac2b 100644
--- a/drivers/gpu/drm/i915/display/intel_dsi.c
+++ b/drivers/gpu/drm/i915/display/intel_dsi.c
@@ -106,7 +106,7 @@ intel_dsi_get_panel_orientation(struct intel_connector *connector)
 	if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
 		return orientation;
 
-	orientation = dev_priv->vbt.orientation;
+	orientation = dev_priv->display.vbt.orientation;
 	if (orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
 		return orientation;
 
diff --git a/drivers/gpu/drm/i915/display/intel_lvds.c b/drivers/gpu/drm/i915/display/intel_lvds.c
index 730480ac3300..9aa38e8141b5 100644
--- a/drivers/gpu/drm/i915/display/intel_lvds.c
+++ b/drivers/gpu/drm/i915/display/intel_lvds.c
@@ -837,12 +837,12 @@ void intel_lvds_init(struct drm_i915_private *dev_priv)
 
 	/* Skip init on machines we know falsely report LVDS */
 	if (dmi_check_system(intel_no_lvds)) {
-		drm_WARN(dev, !dev_priv->vbt.int_lvds_support,
+		drm_WARN(dev, !dev_priv->display.vbt.int_lvds_support,
 			 "Useless DMI match. Internal LVDS support disabled by VBT\n");
 		return;
 	}
 
-	if (!dev_priv->vbt.int_lvds_support) {
+	if (!dev_priv->display.vbt.int_lvds_support) {
 		drm_dbg_kms(&dev_priv->drm,
 			    "Internal LVDS support disabled by VBT\n");
 		return;
diff --git a/drivers/gpu/drm/i915/display/intel_panel.c b/drivers/gpu/drm/i915/display/intel_panel.c
index 237a40623dd7..43dbc5a3ec37 100644
--- a/drivers/gpu/drm/i915/display/intel_panel.c
+++ b/drivers/gpu/drm/i915/display/intel_panel.c
@@ -42,7 +42,7 @@ bool intel_panel_use_ssc(struct drm_i915_private *i915)
 {
 	if (i915->params.panel_use_ssc >= 0)
 		return i915->params.panel_use_ssc != 0;
-	return i915->vbt.lvds_use_ssc
+	return i915->display.vbt.lvds_use_ssc
 		&& !(i915->quirks & QUIRK_LVDS_SSC_DISABLE);
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_pch_refclk.c b/drivers/gpu/drm/i915/display/intel_pch_refclk.c
index ee72400759a3..33bd4d7df465 100644
--- a/drivers/gpu/drm/i915/display/intel_pch_refclk.c
+++ b/drivers/gpu/drm/i915/display/intel_pch_refclk.c
@@ -514,7 +514,7 @@ static void ilk_init_pch_refclk(struct drm_i915_private *dev_priv)
 	}
 
 	if (HAS_PCH_IBX(dev_priv)) {
-		has_ck505 = dev_priv->vbt.display_clock_mode;
+		has_ck505 = dev_priv->display.vbt.display_clock_mode;
 		can_ssc = has_ck505;
 	} else {
 		has_ck505 = false;
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c
index 19122bc6d2ab..f5b744bef18f 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -2016,7 +2016,7 @@ intel_sdvo_get_analog_edid(struct drm_connector *connector)
 
 	return drm_get_edid(connector,
 			    intel_gmbus_get_adapter(dev_priv,
-						    dev_priv->vbt.crt_ddc_pin));
+						    dev_priv->display.vbt.crt_ddc_pin));
 }
 
 static enum drm_connector_status
@@ -2581,9 +2581,9 @@ intel_sdvo_select_ddc_bus(struct drm_i915_private *dev_priv,
 	struct sdvo_device_mapping *mapping;
 
 	if (sdvo->port == PORT_B)
-		mapping = &dev_priv->vbt.sdvo_mappings[0];
+		mapping = &dev_priv->display.vbt.sdvo_mappings[0];
 	else
-		mapping = &dev_priv->vbt.sdvo_mappings[1];
+		mapping = &dev_priv->display.vbt.sdvo_mappings[1];
 
 	if (mapping->initialized)
 		sdvo->ddc_bus = 1 << ((mapping->ddc_pin & 0xf0) >> 4);
@@ -2599,9 +2599,9 @@ intel_sdvo_select_i2c_bus(struct drm_i915_private *dev_priv,
 	u8 pin;
 
 	if (sdvo->port == PORT_B)
-		mapping = &dev_priv->vbt.sdvo_mappings[0];
+		mapping = &dev_priv->display.vbt.sdvo_mappings[0];
 	else
-		mapping = &dev_priv->vbt.sdvo_mappings[1];
+		mapping = &dev_priv->display.vbt.sdvo_mappings[1];
 
 	if (mapping->initialized &&
 	    intel_gmbus_is_valid_pin(dev_priv, mapping->i2c_pin))
@@ -2639,11 +2639,11 @@ intel_sdvo_get_slave_addr(struct drm_i915_private *dev_priv,
 	struct sdvo_device_mapping *my_mapping, *other_mapping;
 
 	if (sdvo->port == PORT_B) {
-		my_mapping = &dev_priv->vbt.sdvo_mappings[0];
-		other_mapping = &dev_priv->vbt.sdvo_mappings[1];
+		my_mapping = &dev_priv->display.vbt.sdvo_mappings[0];
+		other_mapping = &dev_priv->display.vbt.sdvo_mappings[1];
 	} else {
-		my_mapping = &dev_priv->vbt.sdvo_mappings[1];
-		other_mapping = &dev_priv->vbt.sdvo_mappings[0];
+		my_mapping = &dev_priv->display.vbt.sdvo_mappings[1];
+		other_mapping = &dev_priv->display.vbt.sdvo_mappings[0];
 	}
 
 	/* If the BIOS described our SDVO device, take advantage of it. */
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index 509b0a419c20..d474f5130aea 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -362,10 +362,10 @@ enum vbt_gmbus_ddi {
  * basically any of the fields to ensure the correct interpretation for the BDB
  * version in question.
  *
- * When we copy the child device configs to dev_priv->vbt.child_dev, we reserve
- * space for the full structure below, and initialize the tail not actually
- * present in VBT to zeros. Accessing those fields is fine, as long as the
- * default zero is taken into account, again according to the BDB version.
+ * When we copy the child device configs to dev_priv->display.vbt.child_dev, we
+ * reserve space for the full structure below, and initialize the tail not
+ * actually present in VBT to zeros. Accessing those fields is fine, as long as
+ * the default zero is taken into account, again according to the BDB version.
  *
  * BDB versions 155 and below are considered legacy, and version 155 seems to be
  * a baseline for some of the VBT documentation. When adding new fields, please
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a8fc77a852b5..e3c7de286226 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -34,7 +34,6 @@
 
 #include <linux/pm_qos.h>
 
-#include <drm/drm_connector.h>
 #include <drm/ttm/ttm_device.h>
 
 #include "display/intel_display.h"
@@ -90,15 +89,6 @@ struct vlv_s0ix_state;
 	 I915_GEM_DOMAIN_INSTRUCTION | \
 	 I915_GEM_DOMAIN_VERTEX)
 
-struct sdvo_device_mapping {
-	u8 initialized;
-	u8 dvo_port;
-	u8 slave_addr;
-	u8 dvo_wiring;
-	u8 i2c_pin;
-	u8 ddc_pin;
-};
-
 #define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
 
 #define GEM_QUIRK_PIN_SWIZZLED_PAGES	BIT(0)
@@ -200,32 +190,6 @@ i915_fence_timeout(const struct drm_i915_private *i915)
 
 #define HAS_HW_SAGV_WM(i915) (DISPLAY_VER(i915) >= 13 && !IS_DGFX(i915))
 
-struct intel_vbt_data {
-	/* bdb version */
-	u16 version;
-
-	/* Feature bits */
-	unsigned int int_tv_support:1;
-	unsigned int int_crt_support:1;
-	unsigned int lvds_use_ssc:1;
-	unsigned int int_lvds_support:1;
-	unsigned int display_clock_mode:1;
-	unsigned int fdi_rx_polarity_inverted:1;
-	int lvds_ssc_freq;
-	enum drm_panel_orientation orientation;
-
-	bool override_afc_startup;
-	u8 override_afc_startup_val;
-
-	int crt_ddc_pin;
-
-	struct list_head display_devices;
-	struct list_head bdb_blocks;
-
-	struct intel_bios_encoder_data *ports[I915_MAX_PORTS]; /* Non-NULL if port present. */
-	struct sdvo_device_mapping sdvo_mappings[2];
-};
-
 struct i915_frontbuffer_tracking {
 	spinlock_t lock;
 
@@ -323,7 +287,6 @@ struct drm_i915_private {
 	u32 pipestat_irq_mask[I915_MAX_PIPES];
 
 	struct intel_fbc *fbc[I915_MAX_FBCS];
-	struct intel_vbt_data vbt;
 
 	bool preserve_bios_swizzle;
 
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index c54b8b9c8c3f..cd89a94d0c0b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -7464,7 +7464,7 @@ static void cpt_init_clock_gating(struct drm_i915_private *dev_priv)
 		val = intel_uncore_read(&dev_priv->uncore, TRANS_CHICKEN2(pipe));
 		val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
 		val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
-		if (dev_priv->vbt.fdi_rx_polarity_inverted)
+		if (dev_priv->display.vbt.fdi_rx_polarity_inverted)
 			val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
 		val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER;
 		val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH;
-- 
cgit v1.2.3


From b202ab6173af66a78c95a6acaca26f74d0c8a464 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 29 Aug 2022 16:18:20 +0300
Subject: drm/i915: move and group modeset_wq and flip_wq under display.wq

Move display workqueue related members under drm_i915_private display
sub-struct.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/f34f7fb45510e880ce0cc16cb2fbba72fbe94a1d.1661779055.git.jani.nikula@intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c      | 20 ++++++++++----------
 drivers/gpu/drm/i915/display/intel_display_core.h |  8 ++++++++
 drivers/gpu/drm/i915/i915_drv.h                   |  5 -----
 3 files changed, 18 insertions(+), 15 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 0eac552551fa..cb1e7f816fdd 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -7812,12 +7812,12 @@ static int intel_atomic_commit(struct drm_device *dev,
 
 	i915_sw_fence_commit(&state->commit_ready);
 	if (nonblock && state->modeset) {
-		queue_work(dev_priv->modeset_wq, &state->base.commit_work);
+		queue_work(dev_priv->display.wq.modeset, &state->base.commit_work);
 	} else if (nonblock) {
-		queue_work(dev_priv->flip_wq, &state->base.commit_work);
+		queue_work(dev_priv->display.wq.flip, &state->base.commit_work);
 	} else {
 		if (state->modeset)
-			flush_workqueue(dev_priv->modeset_wq);
+			flush_workqueue(dev_priv->display.wq.modeset);
 		intel_atomic_commit_tail(state);
 	}
 
@@ -8681,9 +8681,9 @@ int intel_modeset_init_noirq(struct drm_i915_private *i915)
 
 	intel_dmc_ucode_init(i915);
 
-	i915->modeset_wq = alloc_ordered_workqueue("i915_modeset", 0);
-	i915->flip_wq = alloc_workqueue("i915_flip", WQ_HIGHPRI |
-					WQ_UNBOUND, WQ_UNBOUND_MAX_ACTIVE);
+	i915->display.wq.modeset = alloc_ordered_workqueue("i915_modeset", 0);
+	i915->display.wq.flip = alloc_workqueue("i915_flip", WQ_HIGHPRI |
+						WQ_UNBOUND, WQ_UNBOUND_MAX_ACTIVE);
 
 	intel_mode_config_init(i915);
 
@@ -8990,8 +8990,8 @@ void intel_modeset_driver_remove(struct drm_i915_private *i915)
 	if (!HAS_DISPLAY(i915))
 		return;
 
-	flush_workqueue(i915->flip_wq);
-	flush_workqueue(i915->modeset_wq);
+	flush_workqueue(i915->display.wq.flip);
+	flush_workqueue(i915->display.wq.modeset);
 
 	flush_work(&i915->atomic_helper.free_work);
 	drm_WARN_ON(&i915->drm, !llist_empty(&i915->atomic_helper.free_list));
@@ -9032,8 +9032,8 @@ void intel_modeset_driver_remove_noirq(struct drm_i915_private *i915)
 
 	intel_gmbus_teardown(i915);
 
-	destroy_workqueue(i915->flip_wq);
-	destroy_workqueue(i915->modeset_wq);
+	destroy_workqueue(i915->display.wq.flip);
+	destroy_workqueue(i915->display.wq.modeset);
 
 	intel_fbc_cleanup(i915);
 }
diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h
index b061deb21df1..31fd05a04bff 100644
--- a/drivers/gpu/drm/i915/display/intel_display_core.h
+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
@@ -376,6 +376,14 @@ struct intel_display {
 		u32 block_time_us;
 	} sagv;
 
+	struct {
+		/* ordered wq for modesets */
+		struct workqueue_struct *modeset;
+
+		/* unbound hipri wq for page flips/plane updates */
+		struct workqueue_struct *flip;
+	} wq;
+
 	/* Grouping using named structs. Keep sorted. */
 	struct intel_audio audio;
 	struct intel_dmc dmc;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1a494933dd92..5aac06da3cc7 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -290,11 +290,6 @@ struct drm_i915_private {
 	 */
 	struct workqueue_struct *wq;
 
-	/* ordered wq for modesets */
-	struct workqueue_struct *modeset_wq;
-	/* unbound hipri wq for page flips/plane updates */
-	struct workqueue_struct *flip_wq;
-
 	/* pm private clock gating functions */
 	const struct drm_i915_clock_gating_funcs *clock_gating_funcs;
 
-- 
cgit v1.2.3


From a71e7d77fb03f61211d035afaf033a01dc443195 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 29 Aug 2022 16:18:24 +0300
Subject: drm/i915: move atomic_helper under display sub-struct

Move display atomic helper related members under drm_i915_private
display sub-struct.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1d864238a92a32d52ea70c0079c910cc90955324.1661779055.git.jani.nikula@intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c      | 14 +++++++-------
 drivers/gpu/drm/i915/display/intel_display_core.h |  6 ++++++
 drivers/gpu/drm/i915/i915_drv.h                   |  5 -----
 3 files changed, 13 insertions(+), 12 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index cb1e7f816fdd..35496707402c 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -7409,7 +7409,7 @@ static void intel_atomic_helper_free_state(struct drm_i915_private *dev_priv)
 	struct intel_atomic_state *state, *next;
 	struct llist_node *freed;
 
-	freed = llist_del_all(&dev_priv->atomic_helper.free_list);
+	freed = llist_del_all(&dev_priv->display.atomic_helper.free_list);
 	llist_for_each_entry_safe(state, next, freed, freed)
 		drm_atomic_state_put(&state->base);
 }
@@ -7417,7 +7417,7 @@ static void intel_atomic_helper_free_state(struct drm_i915_private *dev_priv)
 static void intel_atomic_helper_free_state_worker(struct work_struct *work)
 {
 	struct drm_i915_private *dev_priv =
-		container_of(work, typeof(*dev_priv), atomic_helper.free_work);
+		container_of(work, typeof(*dev_priv), display.atomic_helper.free_work);
 
 	intel_atomic_helper_free_state(dev_priv);
 }
@@ -7709,7 +7709,7 @@ intel_atomic_commit_ready(struct i915_sw_fence *fence,
 	case FENCE_FREE:
 		{
 			struct intel_atomic_helper *helper =
-				&to_i915(state->base.dev)->atomic_helper;
+				&to_i915(state->base.dev)->display.atomic_helper;
 
 			if (llist_add(&state->freed, &helper->free_list))
 				schedule_work(&helper->free_work);
@@ -8699,8 +8699,8 @@ int intel_modeset_init_noirq(struct drm_i915_private *i915)
 	if (ret)
 		goto cleanup_vga_client_pw_domain_dmc;
 
-	init_llist_head(&i915->atomic_helper.free_list);
-	INIT_WORK(&i915->atomic_helper.free_work,
+	init_llist_head(&i915->display.atomic_helper.free_list);
+	INIT_WORK(&i915->display.atomic_helper.free_work,
 		  intel_atomic_helper_free_state_worker);
 
 	intel_init_quirks(i915);
@@ -8993,8 +8993,8 @@ void intel_modeset_driver_remove(struct drm_i915_private *i915)
 	flush_workqueue(i915->display.wq.flip);
 	flush_workqueue(i915->display.wq.modeset);
 
-	flush_work(&i915->atomic_helper.free_work);
-	drm_WARN_ON(&i915->drm, !llist_empty(&i915->atomic_helper.free_list));
+	flush_work(&i915->display.atomic_helper.free_work);
+	drm_WARN_ON(&i915->drm, !llist_empty(&i915->display.atomic_helper.free_list));
 }
 
 /* part #2: call after irq uninstall */
diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h
index 577ab7765fa9..bf78b0fcbd11 100644
--- a/drivers/gpu/drm/i915/display/intel_display_core.h
+++ b/drivers/gpu/drm/i915/display/intel_display_core.h
@@ -7,6 +7,7 @@
 #define __INTEL_DISPLAY_CORE_H__
 
 #include <linux/list.h>
+#include <linux/llist.h>
 #include <linux/mutex.h>
 #include <linux/types.h>
 #include <linux/wait.h>
@@ -268,6 +269,11 @@ struct intel_display {
 	} funcs;
 
 	/* Grouping using anonymous structs. Keep sorted. */
+	struct intel_atomic_helper {
+		struct llist_head free_list;
+		struct work_struct free_work;
+	} atomic_helper;
+
 	struct {
 		/* backlight registers and fields in struct intel_panel */
 		struct mutex lock;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 47f2629da226..9dc1f2b19702 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -301,11 +301,6 @@ struct drm_i915_private {
 
 	struct list_head global_obj_list;
 
-	struct intel_atomic_helper {
-		struct llist_head free_list;
-		struct work_struct free_work;
-	} atomic_helper;
-
 	bool mchbar_need_disable;
 
 	struct intel_l3_parity l3_parity;
-- 
cgit v1.2.3


From 22055eddd4fb33ef475f2daf700fbc7dd0f42389 Mon Sep 17 00:00:00 2001
From: Andrzej Hajda <andrzej.hajda@intel.com>
Date: Fri, 26 Aug 2022 16:19:27 +0200
Subject: drm/i915/hpd: suspend MST at the end of intel_modeset_driver_remove

i915->hotplug.dig_port_work can be queued from intel_hpd_irq_handler
called by IRQ handler or by intel_hpd_trigger_irq called from dp_mst.
Since dp_mst is suspended after irq handler uninstall, a cleaner approach
is to cancel hpd work after intel_dp_mst_suspend, otherwise we risk
use-after-free.

It should fix following WARNINGS:
[283.405824] cpu_latency_qos_update_request called for unknown object
[283.405866] WARNING: CPU: 2 PID: 240 at kernel/power/qos.c:296 cpu_latency_qos_update_request+0x2d/0x100
[283.405912] CPU: 2 PID: 240 Comm: kworker/u64:9 Not tainted 5.18.0-rc6-Patchwork_103738v3-g1672d1c43e43+ #1
[283.405915] Hardware name: Intel Corporation Raptor Lake Client Platform/RPL-S ADP-S DDR5 UDIMM CRB, BIOS RPLSFWI1.R00.2397.A01.2109300731 09/30/2021
[283.405916] Workqueue: i915-dp i915_digport_work_func [i915]
[283.406020] RIP: 0010:cpu_latency_qos_update_request+0x2d/0x100
...
[283.406040] Call Trace:
[283.406041]  <TASK>
[283.406044]  intel_dp_aux_xfer+0x60e/0x8e0 [i915]
[283.406131]  ? finish_swait+0x80/0x80
[283.406139]  intel_dp_aux_transfer+0xc5/0x2b0 [i915]
[283.406218]  drm_dp_dpcd_access+0x79/0x130 [drm_display_helper]
[283.406227]  drm_dp_dpcd_read+0xe2/0xf0 [drm_display_helper]
[283.406233]  intel_dp_hpd_pulse+0x134/0x570 [i915]
[283.406308]  ? __down_killable+0x70/0x140
[283.406313]  i915_digport_work_func+0xba/0x150 [i915]

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/4586
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5558
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220826141929.189681-2-andrzej.hajda@intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 35496707402c..ebd39fa16d3b 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -8995,6 +8995,13 @@ void intel_modeset_driver_remove(struct drm_i915_private *i915)
 
 	flush_work(&i915->display.atomic_helper.free_work);
 	drm_WARN_ON(&i915->drm, !llist_empty(&i915->display.atomic_helper.free_list));
+
+	/*
+	 * MST topology needs to be suspended so we don't have any calls to
+	 * fbdev after it's finalized. MST will be destroyed later as part of
+	 * drm_mode_config_cleanup()
+	 */
+	intel_dp_mst_suspend(i915);
 }
 
 /* part #2: call after irq uninstall */
@@ -9009,13 +9016,6 @@ void intel_modeset_driver_remove_noirq(struct drm_i915_private *i915)
 	 */
 	intel_hpd_poll_fini(i915);
 
-	/*
-	 * MST topology needs to be suspended so we don't have any calls to
-	 * fbdev after it's finalized. MST will be destroyed later as part of
-	 * drm_mode_config_cleanup()
-	 */
-	intel_dp_mst_suspend(i915);
-
 	/* poll work can call into fbdev, hence clean that up afterwards */
 	intel_fbdev_fini(i915);
 
-- 
cgit v1.2.3


From 340b515c1b172e43ea47d5f823f876307854b46a Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:41 +0300
Subject: drm/i915: Relocate intel_crtc_dotclock()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

intel_crtc_dotclock() is a bit misplaced. In lieu of a better
place let's just move it next to its friends in intel_display.c.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-2-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_ddi.c     | 22 ----------------------
 drivers/gpu/drm/i915/display/intel_display.c | 22 ++++++++++++++++++++++
 2 files changed, 22 insertions(+), 22 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index f5416433826d..643832d55c28 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -324,28 +324,6 @@ static int icl_calc_tbt_pll_link(struct drm_i915_private *dev_priv,
 	}
 }
 
-int intel_crtc_dotclock(const struct intel_crtc_state *pipe_config)
-{
-	int dotclock;
-
-	if (intel_crtc_has_dp_encoder(pipe_config))
-		dotclock = intel_dotclock_calculate(pipe_config->port_clock,
-						    &pipe_config->dp_m_n);
-	else if (pipe_config->has_hdmi_sink && pipe_config->pipe_bpp > 24)
-		dotclock = pipe_config->port_clock * 24 / pipe_config->pipe_bpp;
-	else
-		dotclock = pipe_config->port_clock;
-
-	if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 &&
-	    !intel_crtc_has_dp_encoder(pipe_config))
-		dotclock *= 2;
-
-	if (pipe_config->pixel_multiplier)
-		dotclock /= pipe_config->pixel_multiplier;
-
-	return dotclock;
-}
-
 static void ddi_dotclock_get(struct intel_crtc_state *pipe_config)
 {
 	/* CRT dotclock is determined via other means */
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index ebd39fa16d3b..106c594dad31 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4494,6 +4494,28 @@ int intel_dotclock_calculate(int link_freq,
 	return div_u64(mul_u32_u32(m_n->link_m, link_freq), m_n->link_n);
 }
 
+int intel_crtc_dotclock(const struct intel_crtc_state *pipe_config)
+{
+	int dotclock;
+
+	if (intel_crtc_has_dp_encoder(pipe_config))
+		dotclock = intel_dotclock_calculate(pipe_config->port_clock,
+						    &pipe_config->dp_m_n);
+	else if (pipe_config->has_hdmi_sink && pipe_config->pipe_bpp > 24)
+		dotclock = pipe_config->port_clock * 24 / pipe_config->pipe_bpp;
+	else
+		dotclock = pipe_config->port_clock;
+
+	if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 &&
+	    !intel_crtc_has_dp_encoder(pipe_config))
+		dotclock *= 2;
+
+	if (pipe_config->pixel_multiplier)
+		dotclock /= pipe_config->pixel_multiplier;
+
+	return dotclock;
+}
+
 /* Returns the currently programmed mode of the given encoder. */
 struct drm_display_mode *
 intel_encoder_current_mode(struct intel_encoder *encoder)
-- 
cgit v1.2.3


From 9988db59b1d000c6ac7e91144f550603626593a4 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:43 +0300
Subject: drm/i915: Extract HAS_DOUBLE_BUFFERED_M_N()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

We have a couple of places that want to make distinction between
double buffered M/N registers vs. the split M1/N1+M2/N2 registers.
Add a helper for that.

v2: Turn into a HAS_ macro (Jani)

Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-4-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 2 +-
 drivers/gpu/drm/i915/display/intel_dp.c      | 3 +--
 drivers/gpu/drm/i915/i915_drv.h              | 2 ++
 3 files changed, 4 insertions(+), 3 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 106c594dad31..807a20626a79 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5771,7 +5771,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	PIPE_CONF_CHECK_I(lane_count);
 	PIPE_CONF_CHECK_X(lane_lat_optim_mask);
 
-	if (DISPLAY_VER(dev_priv) >= 9 || IS_BROADWELL(dev_priv)) {
+	if (HAS_DOUBLE_BUFFERED_M_N(dev_priv)) {
 		PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
 	} else {
 		PIPE_CONF_CHECK_M_N(dp_m_n);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index f52a5f037c3d..a8f0e2dbd8bf 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1864,8 +1864,7 @@ intel_dp_compute_hdr_metadata_infoframe_sdp(struct intel_dp *intel_dp,
 static bool cpu_transcoder_has_drrs(struct drm_i915_private *i915,
 				    enum transcoder cpu_transcoder)
 {
-	/* M1/N1 is double buffered */
-	if (DISPLAY_VER(i915) >= 9 || IS_BROADWELL(i915))
+	if (HAS_DOUBLE_BUFFERED_M_N(i915))
 		return true;
 
 	return intel_cpu_transcoder_has_m2_n2(i915, cpu_transcoder);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index cc45eb759ba7..717c702d2aaf 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -868,6 +868,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 #define HAS_DP_MST(dev_priv)	(INTEL_INFO(dev_priv)->display.has_dp_mst)
 #define HAS_DP20(dev_priv)	(IS_DG2(dev_priv) || DISPLAY_VER(dev_priv) >= 14)
 
+#define HAS_DOUBLE_BUFFERED_M_N(dev_priv)	(DISPLAY_VER(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
+
 #define HAS_CDCLK_CRAWL(dev_priv)	 (INTEL_INFO(dev_priv)->display.has_cdclk_crawl)
 #define HAS_DDI(dev_priv)		 (INTEL_INFO(dev_priv)->display.has_ddi)
 #define HAS_FPGA_DBG_UNCLAIMED(dev_priv) (INTEL_INFO(dev_priv)->display.has_fpga_dbg)
-- 
cgit v1.2.3


From b000abd3b3d2f06e9cc60c19dd4c893cb3531d76 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:45 +0300
Subject: drm/i915: Do .crtc_compute_clock() earlier
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Currently we calculate a lot of things (pixel rate, watermarks,
cdclk) trusting that the DPLL can generate the exact frequency
we ask it. In practice that is not true and there can be
certain amount of rounding involved.

To allow us to eventually get accurate numbers for all our
DPLL clock derived state we need to move the DPLL calculation
to hapen much earlier. To that end we hoist it up to the just
after the fastset checks. For now we just do the easy code
motion, and the actual back feeding of the final DPLL clock
into the state will come later.

A slight change here is that now .crtc_compute_clock()
can get called while the shared_dpll is still assigned.
But since .crtc_compute_clock() no longer assignes new
shared_dplls this is perfectly fine.

TODO: I'd actually like to do this before the fastset check
so that if the DPLL state should change we actually do the
modeset. Which I think is what the video aficionados want,
but it might not be what the fans of fastboot want. Not yet
sure how to reconcile those conflicting requirements...

v2: s/return/goto/ in error handling

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-6-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 9 +++++----
 drivers/gpu/drm/i915/display/intel_dpll.c    | 3 ---
 2 files changed, 5 insertions(+), 7 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 807a20626a79..b07fc5f5b111 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4820,10 +4820,6 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 		crtc_state->update_wm_post = true;
 
 	if (mode_changed) {
-		ret = intel_dpll_crtc_compute_clock(state, crtc);
-		if (ret)
-			return ret;
-
 		ret = intel_dpll_crtc_get_shared_dpll(state, crtc);
 		if (ret)
 			return ret;
@@ -6912,6 +6908,11 @@ static int intel_atomic_check(struct drm_device *dev,
 					    new_crtc_state, i) {
 		if (intel_crtc_needs_modeset(new_crtc_state)) {
 			any_ms = true;
+
+			ret = intel_dpll_crtc_compute_clock(state, crtc);
+			if (ret)
+				goto fail;
+
 			continue;
 		}
 
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
index 81655fdf2c89..6b8d90d72e00 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -1411,9 +1411,6 @@ int intel_dpll_crtc_compute_clock(struct intel_atomic_state *state,
 
 	drm_WARN_ON(&i915->drm, !intel_crtc_needs_modeset(crtc_state));
 
-	if (drm_WARN_ON(&i915->drm, crtc_state->shared_dpll))
-		return 0;
-
 	memset(&crtc_state->dpll_hw_state, 0,
 	       sizeof(crtc_state->dpll_hw_state));
 
-- 
cgit v1.2.3


From e95132ef5d458b3e9d75acfbf4770e8b34de5315 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:46 +0300
Subject: drm/i915: Reassign DPLLs only for crtcs going throug
 .compute_config()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Only reassign the pipe's DPLL if it's going through a full
.compute_config() cycle. If OTOH it's just getting modeset
eg. in order to change cdclk there doesn't seem much point in
picking a new DPLL for it.

This should also prevent .get_dplls() from seeing a funky port_clock
for DP even in cases where the readout produces a non-standard
clock and we (for some reason) have decided to not fully recompute
the state to remedy the situation.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-7-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 17 +----------------
 drivers/gpu/drm/i915/display/intel_dpll.c    |  6 ++----
 2 files changed, 3 insertions(+), 20 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index b07fc5f5b111..d5649bb5cd18 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6066,20 +6066,6 @@ void intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state)
 	}
 }
 
-static void intel_modeset_clear_plls(struct intel_atomic_state *state)
-{
-	struct intel_crtc_state *new_crtc_state;
-	struct intel_crtc *crtc;
-	int i;
-
-	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
-		if (!intel_crtc_needs_modeset(new_crtc_state))
-			continue;
-
-		intel_release_shared_dplls(state, crtc);
-	}
-}
-
 /*
  * This implements the workaround described in the "notes" section of the mode
  * set sequence documentation. When going from no pipes or single pipe to
@@ -6913,6 +6899,7 @@ static int intel_atomic_check(struct drm_device *dev,
 			if (ret)
 				goto fail;
 
+			intel_release_shared_dplls(state, crtc);
 			continue;
 		}
 
@@ -6960,8 +6947,6 @@ static int intel_atomic_check(struct drm_device *dev,
 		ret = intel_modeset_calc_cdclk(state);
 		if (ret)
 			return ret;
-
-		intel_modeset_clear_plls(state);
 	}
 
 	ret = intel_atomic_check_crtcs(state);
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c b/drivers/gpu/drm/i915/display/intel_dpll.c
index 6b8d90d72e00..4b20541ba760 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -1436,11 +1436,9 @@ int intel_dpll_crtc_get_shared_dpll(struct intel_atomic_state *state,
 	int ret;
 
 	drm_WARN_ON(&i915->drm, !intel_crtc_needs_modeset(crtc_state));
+	drm_WARN_ON(&i915->drm, !crtc_state->hw.enable && crtc_state->shared_dpll);
 
-	if (drm_WARN_ON(&i915->drm, crtc_state->shared_dpll))
-		return 0;
-
-	if (!crtc_state->hw.enable)
+	if (!crtc_state->hw.enable || crtc_state->shared_dpll)
 		return 0;
 
 	if (!i915->display.funcs.dpll->crtc_get_shared_dpll)
-- 
cgit v1.2.3


From 0ff0e219d9b8db047d3e800553f238136ed53ed7 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:48 +0300
Subject: drm/i915: Compute clocks earlier
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Do the DPLL computation before fastset checks. This should
allow us to get rid of all that horrible fuzzy clock handling
for fastsets. Who knows how many bugs there are caused by our
state not actually matching what the hardware will generate.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-9-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index d5649bb5cd18..0d068a2a365c 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2691,6 +2691,10 @@ static int intel_crtc_compute_config(struct intel_atomic_state *state,
 		intel_atomic_get_new_crtc_state(state, crtc);
 	int ret;
 
+	ret = intel_dpll_crtc_compute_clock(state, crtc);
+	if (ret)
+		return ret;
+
 	ret = intel_crtc_compute_pipe_src(crtc_state);
 	if (ret)
 		return ret;
@@ -6895,10 +6899,6 @@ static int intel_atomic_check(struct drm_device *dev,
 		if (intel_crtc_needs_modeset(new_crtc_state)) {
 			any_ms = true;
 
-			ret = intel_dpll_crtc_compute_clock(state, crtc);
-			if (ret)
-				goto fail;
-
 			intel_release_shared_dplls(state, crtc);
 			continue;
 		}
-- 
cgit v1.2.3


From 27d06077d6e064ab5c02988d14bca4748045d002 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:49 +0300
Subject: drm/i915: Make M/N checks non-fuzzy
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Now that we no longer fuzz M/N during fastset these should
match exctly.

In order to get a match with what the BIOS does we need to round
M/N down. And we do the opposite rounding when doing the readback.
That gets us pretty much the same thing back.

There can still be slight rounding differences between FDI M/N
vs. the DPLL output so we allow for tiny deviation in
intel_pipe_config_sanity_check().

v2: Tweak rounding/sanity check stuff a bit

Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-10-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c       | 52 +++++-----------------
 .../gpu/drm/i915/display/intel_modeset_verify.c    |  6 +--
 2 files changed, 13 insertions(+), 45 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 0d068a2a365c..1259c2ed1966 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4495,7 +4495,8 @@ int intel_dotclock_calculate(int link_freq,
 	if (!m_n->link_n)
 		return 0;
 
-	return div_u64(mul_u32_u32(m_n->link_m, link_freq), m_n->link_n);
+	return DIV_ROUND_UP_ULL(mul_u32_u32(m_n->link_m, link_freq),
+				m_n->link_n);
 }
 
 int intel_crtc_dotclock(const struct intel_crtc_state *pipe_config)
@@ -5387,47 +5388,15 @@ bool intel_fuzzy_clock_check(int clock1, int clock2)
 	return false;
 }
 
-static bool
-intel_compare_m_n(unsigned int m, unsigned int n,
-		  unsigned int m2, unsigned int n2,
-		  bool exact)
-{
-	if (m == m2 && n == n2)
-		return true;
-
-	if (exact || !m || !n || !m2 || !n2)
-		return false;
-
-	BUILD_BUG_ON(DATA_LINK_M_N_MASK > INT_MAX);
-
-	if (n > n2) {
-		while (n > n2) {
-			m2 <<= 1;
-			n2 <<= 1;
-		}
-	} else if (n < n2) {
-		while (n < n2) {
-			m <<= 1;
-			n <<= 1;
-		}
-	}
-
-	if (n != n2)
-		return false;
-
-	return intel_fuzzy_clock_check(m, m2);
-}
-
 static bool
 intel_compare_link_m_n(const struct intel_link_m_n *m_n,
-		       const struct intel_link_m_n *m2_n2,
-		       bool exact)
+		       const struct intel_link_m_n *m2_n2)
 {
 	return m_n->tu == m2_n2->tu &&
-		intel_compare_m_n(m_n->data_m, m_n->data_n,
-				  m2_n2->data_m, m2_n2->data_n, exact) &&
-		intel_compare_m_n(m_n->link_m, m_n->link_n,
-				  m2_n2->link_m, m2_n2->link_n, exact);
+		m_n->data_m == m2_n2->data_m &&
+		m_n->data_n == m2_n2->data_n &&
+		m_n->link_m == m2_n2->link_m &&
+		m_n->link_n == m2_n2->link_n;
 }
 
 static bool
@@ -5621,8 +5590,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 
 #define PIPE_CONF_CHECK_M_N(name) do { \
 	if (!intel_compare_link_m_n(&current_config->name, \
-				    &pipe_config->name,\
-				    !fastset)) { \
+				    &pipe_config->name)) { \
 		pipe_config_mismatch(fastset, crtc, __stringify(name), \
 				     "(expected tu %i data %i/%i link %i/%i, " \
 				     "found tu %i, data %i/%i link %i/%i)", \
@@ -5669,9 +5637,9 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
  */
 #define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) do { \
 	if (!intel_compare_link_m_n(&current_config->name, \
-				    &pipe_config->name, !fastset) && \
+				    &pipe_config->name) && \
 	    !intel_compare_link_m_n(&current_config->alt_name, \
-				    &pipe_config->name, !fastset)) { \
+				    &pipe_config->name)) { \
 		pipe_config_mismatch(fastset, crtc, __stringify(name), \
 				     "(expected tu %i data %i/%i link %i/%i, " \
 				     "or tu %i data %i/%i link %i/%i, " \
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_verify.c b/drivers/gpu/drm/i915/display/intel_modeset_verify.c
index a91586d77cb6..073607162acc 100644
--- a/drivers/gpu/drm/i915/display/intel_modeset_verify.c
+++ b/drivers/gpu/drm/i915/display/intel_modeset_verify.c
@@ -94,10 +94,10 @@ static void intel_pipe_config_sanity_check(struct drm_i915_private *dev_priv,
 
 		/*
 		 * FDI already provided one idea for the dotclock.
-		 * Yell if the encoder disagrees.
+		 * Yell if the encoder disagrees. Allow for slight
+		 * rounding differences.
 		 */
-		drm_WARN(&dev_priv->drm,
-			 !intel_fuzzy_clock_check(fdi_dotclock, dotclock),
+		drm_WARN(&dev_priv->drm, abs(fdi_dotclock - dotclock) > 1,
 			 "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
 			 fdi_dotclock, dotclock);
 	}
-- 
cgit v1.2.3


From 5a72df3a3290137f6fdf34f23ac617ca35262c76 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:50 +0300
Subject: drm/i915: Make all clock checks non-fuzzy
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Now that we backfeed the actual DPLL frequency into the
compute crtc state all our clocks should come out exact.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-11-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 19 ++++---------------
 1 file changed, 4 insertions(+), 15 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 1259c2ed1966..6bac6b4ba52e 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5674,16 +5674,6 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	} \
 } while (0)
 
-#define PIPE_CONF_CHECK_CLOCK_FUZZY(name) do { \
-	if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
-		pipe_config_mismatch(fastset, crtc, __stringify(name), \
-				     "(expected %i, found %i)", \
-				     current_config->name, \
-				     pipe_config->name); \
-		ret = false; \
-	} \
-} while (0)
-
 #define PIPE_CONF_CHECK_INFOFRAME(name) do { \
 	if (!intel_compare_infoframe(&current_config->infoframes.name, \
 				     &pipe_config->infoframes.name)) { \
@@ -5802,7 +5792,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 		PIPE_CONF_CHECK_RECT(pch_pfit.dst);
 
 		PIPE_CONF_CHECK_I(scaler_state.scaler_id);
-		PIPE_CONF_CHECK_CLOCK_FUZZY(pixel_rate);
+		PIPE_CONF_CHECK_I(pixel_rate);
 
 		PIPE_CONF_CHECK_X(gamma_mode);
 		if (IS_CHERRYVIEW(dev_priv))
@@ -5872,9 +5862,9 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	if (IS_G4X(dev_priv) || DISPLAY_VER(dev_priv) >= 5)
 		PIPE_CONF_CHECK_I(pipe_bpp);
 
-	PIPE_CONF_CHECK_CLOCK_FUZZY(hw.pipe_mode.crtc_clock);
-	PIPE_CONF_CHECK_CLOCK_FUZZY(hw.adjusted_mode.crtc_clock);
-	PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
+	PIPE_CONF_CHECK_I(hw.pipe_mode.crtc_clock);
+	PIPE_CONF_CHECK_I(hw.adjusted_mode.crtc_clock);
+	PIPE_CONF_CHECK_I(port_clock);
 
 	PIPE_CONF_CHECK_I(min_voltage_level);
 
@@ -5916,7 +5906,6 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 #undef PIPE_CONF_CHECK_BOOL_INCOMPLETE
 #undef PIPE_CONF_CHECK_P
 #undef PIPE_CONF_CHECK_FLAGS
-#undef PIPE_CONF_CHECK_CLOCK_FUZZY
 #undef PIPE_CONF_CHECK_COLOR_LUT
 #undef PIPE_CONF_CHECK_TIMINGS
 #undef PIPE_CONF_CHECK_RECT
-- 
cgit v1.2.3


From f7ba838cf75b348a3a8b0d11d347c964fdf870f3 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:52 +0300
Subject: drm/i915: Nuke fastet state copy hacks
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Now that we no longer do the fuzzy clock and M/N checks we can
get rid of the fastset state copy hacks.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-13-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 28 +++-------------------------
 1 file changed, 3 insertions(+), 25 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 6bac6b4ba52e..976af608b1d6 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6127,23 +6127,6 @@ static void intel_crtc_check_fastset(const struct intel_crtc_state *old_crtc_sta
 	new_crtc_state->update_pipe = true;
 }
 
-static void intel_crtc_copy_fastset(const struct intel_crtc_state *old_crtc_state,
-				    struct intel_crtc_state *new_crtc_state)
-{
-	/*
-	 * If we're not doing the full modeset we want to
-	 * keep the current M/N values as they may be
-	 * sufficiently different to the computed values
-	 * to cause problems.
-	 *
-	 * FIXME: should really copy more fuzzy state here
-	 */
-	new_crtc_state->fdi_m_n = old_crtc_state->fdi_m_n;
-	new_crtc_state->dp_m_n = old_crtc_state->dp_m_n;
-	new_crtc_state->dp_m2_n2 = old_crtc_state->dp_m2_n2;
-	new_crtc_state->has_drrs = old_crtc_state->has_drrs;
-}
-
 static int intel_crtc_add_planes_to_state(struct intel_atomic_state *state,
 					  struct intel_crtc *crtc,
 					  u8 plane_ids_mask)
@@ -6853,17 +6836,12 @@ static int intel_atomic_check(struct drm_device *dev,
 
 	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
 					    new_crtc_state, i) {
-		if (intel_crtc_needs_modeset(new_crtc_state)) {
-			any_ms = true;
-
-			intel_release_shared_dplls(state, crtc);
+		if (!intel_crtc_needs_modeset(new_crtc_state))
 			continue;
-		}
 
-		if (!new_crtc_state->update_pipe)
-			continue;
+		any_ms = true;
 
-		intel_crtc_copy_fastset(old_crtc_state, new_crtc_state);
+		intel_release_shared_dplls(state, crtc);
 	}
 
 	if (any_ms && !check_digital_port_conflicts(state)) {
-- 
cgit v1.2.3


From 3917c9d3b2171dc838b486f7be6869525c6eee02 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:53 +0300
Subject: drm/i915: Skip intel_modeset_pipe_config_late() if the pipe is not
 enabled
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

No sense in calling intel_modeset_pipe_config_late() for a disabled
pipe.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-14-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 976af608b1d6..765ec3102cfe 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6783,9 +6783,11 @@ static int intel_atomic_check(struct drm_device *dev,
 		if (!intel_crtc_needs_modeset(new_crtc_state))
 			continue;
 
-		ret = intel_modeset_pipe_config_late(state, crtc);
-		if (ret)
-			goto fail;
+		if (new_crtc_state->hw.enable) {
+			ret = intel_modeset_pipe_config_late(state, crtc);
+			if (ret)
+				goto fail;
+		}
 
 		intel_crtc_check_fastset(old_crtc_state, new_crtc_state);
 	}
-- 
cgit v1.2.3


From e6f29923c0489b6fec1ac000f2c045df43ec081c Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:55 +0300
Subject: drm/i915: Allow M/N change during fastset on bdw+
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

On BDW+ M/N are double buffered and so we can easily reprogram them
during a fastset. So for eDP panels that support seamless DRRS we
can just change these without a full modeset.

For earlier platforms we'd need to play tricks with M1/N1 vs.
M2/N2 during the fastset to make sure we do the switch atomically.
Not sure the added complexity is worth the hassle, so leave it
alone for now.

The slight downside is that we have to keep the link running at
a link rate capable of supporting the highest refresh rate we
want to use. For the moment we just pick the highest mode the
panel reports and calculate the link based on that. This might
need further refinement (eg. if we run into bandwidth
restrictions)...

v2: Only use the high link rate if the platform really supports
    the seamless M/N change uring fastset (ie. bdw+)
v3: Rebase due to HAS_DOUBLE_BUFFERED_M_N()

Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-16-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c       | 13 ++++++--
 drivers/gpu/drm/i915/display/intel_display_types.h |  1 +
 drivers/gpu/drm/i915/display/intel_dp.c            | 37 +++++++++++++++++++---
 3 files changed, 43 insertions(+), 8 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 765ec3102cfe..e7c28ff8b0e2 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5730,7 +5730,8 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	PIPE_CONF_CHECK_X(lane_lat_optim_mask);
 
 	if (HAS_DOUBLE_BUFFERED_M_N(dev_priv)) {
-		PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
+		if (!fastset || !pipe_config->seamless_m_n)
+			PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
 	} else {
 		PIPE_CONF_CHECK_M_N(dp_m_n);
 		PIPE_CONF_CHECK_M_N(dp_m2_n2);
@@ -5862,8 +5863,10 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	if (IS_G4X(dev_priv) || DISPLAY_VER(dev_priv) >= 5)
 		PIPE_CONF_CHECK_I(pipe_bpp);
 
-	PIPE_CONF_CHECK_I(hw.pipe_mode.crtc_clock);
-	PIPE_CONF_CHECK_I(hw.adjusted_mode.crtc_clock);
+	if (!fastset || !pipe_config->seamless_m_n) {
+		PIPE_CONF_CHECK_I(hw.pipe_mode.crtc_clock);
+		PIPE_CONF_CHECK_I(hw.adjusted_mode.crtc_clock);
+	}
 	PIPE_CONF_CHECK_I(port_clock);
 
 	PIPE_CONF_CHECK_I(min_voltage_level);
@@ -7002,6 +7005,10 @@ static void intel_pipe_fastset(const struct intel_crtc_state *old_crtc_state,
 	if (DISPLAY_VER(dev_priv) >= 9 ||
 	    IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
 		hsw_set_linetime_wm(new_crtc_state);
+
+	if (new_crtc_state->seamless_m_n)
+		intel_cpu_transcoder_set_m1_n1(crtc, new_crtc_state->cpu_transcoder,
+					       &new_crtc_state->dp_m_n);
 }
 
 static void commit_pipe_pre_planes(struct intel_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 0da9b208d56e..688c18f638e8 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1130,6 +1130,7 @@ struct intel_crtc_state {
 	/* m2_n2 for eDP downclock */
 	struct intel_link_m_n dp_m2_n2;
 	bool has_drrs;
+	bool seamless_m_n;
 
 	/* PSR is supported but might not be enabled due the lack of enabled planes */
 	bool has_psr;
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 5073b612fef1..3b94715779c0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1297,21 +1297,45 @@ intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
 	}
 }
 
+static bool has_seamless_m_n(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+
+	/*
+	 * Seamless M/N reprogramming only implemented
+	 * for BDW+ double buffered M/N registers so far.
+	 */
+	return HAS_DOUBLE_BUFFERED_M_N(i915) &&
+		intel_panel_drrs_type(connector) == DRRS_TYPE_SEAMLESS;
+}
+
+static int intel_dp_mode_clock(const struct intel_crtc_state *crtc_state,
+			       const struct drm_connector_state *conn_state)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
+
+	/* FIXME a bit of a mess wrt clock vs. crtc_clock */
+	if (has_seamless_m_n(connector))
+		return intel_panel_highest_mode(connector, adjusted_mode)->clock;
+	else
+		return adjusted_mode->crtc_clock;
+}
+
 /* Optimize link config in order: max bpp, min clock, min lanes */
 static int
 intel_dp_compute_link_config_wide(struct intel_dp *intel_dp,
 				  struct intel_crtc_state *pipe_config,
+				  const struct drm_connector_state *conn_state,
 				  const struct link_config_limits *limits)
 {
-	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
-	int bpp, i, lane_count;
+	int bpp, i, lane_count, clock = intel_dp_mode_clock(pipe_config, conn_state);
 	int mode_rate, link_rate, link_avail;
 
 	for (bpp = limits->max_bpp; bpp >= limits->min_bpp; bpp -= 2 * 3) {
 		int output_bpp = intel_dp_output_bpp(pipe_config->output_format, bpp);
 
-		mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock,
-						   output_bpp);
+		mode_rate = intel_dp_link_required(clock, output_bpp);
 
 		for (i = 0; i < intel_dp->num_common_rates; i++) {
 			link_rate = intel_dp_common_rate(intel_dp, i);
@@ -1622,7 +1646,7 @@ intel_dp_compute_link_config(struct intel_encoder *encoder,
 	 * Optimize for slow and wide for everything, because there are some
 	 * eDP 1.3 and 1.4 panels don't work well with fast and narrow.
 	 */
-	ret = intel_dp_compute_link_config_wide(intel_dp, pipe_config, &limits);
+	ret = intel_dp_compute_link_config_wide(intel_dp, pipe_config, conn_state, &limits);
 
 	if (ret || joiner_needs_dsc || intel_dp->force_dsc_en) {
 		drm_dbg_kms(&i915->drm, "Try DSC (fallback=%s, joiner=%s, force=%s)\n",
@@ -1910,6 +1934,9 @@ intel_dp_drrs_compute_config(struct intel_connector *connector,
 		intel_panel_downclock_mode(connector, &pipe_config->hw.adjusted_mode);
 	int pixel_clock;
 
+	if (has_seamless_m_n(connector))
+		pipe_config->seamless_m_n = true;
+
 	if (!can_enable_drrs(connector, pipe_config, downclock_mode)) {
 		if (intel_cpu_transcoder_has_m2_n2(i915, pipe_config->cpu_transcoder))
 			intel_zero_m_n(&pipe_config->dp_m2_n2);
-- 
cgit v1.2.3


From c46af5621adc766cf1a7cac300d577a39849862f Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:56 +0300
Subject: drm/i915: Use a fixed N value always
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Windows/BIOS always uses fixed N values. Let's match that
behaviour.

Allows us to also get rid of that constant_n quirk stuff.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-17-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 38 +++++++++++++---------------
 drivers/gpu/drm/i915/display/intel_display.h |  2 +-
 drivers/gpu/drm/i915/display/intel_dp.c      | 10 +++-----
 drivers/gpu/drm/i915/display/intel_dp_mst.c  |  3 +--
 drivers/gpu/drm/i915/display/intel_fdi.c     |  2 +-
 5 files changed, 25 insertions(+), 30 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index e7c28ff8b0e2..c57b5b1d6940 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2721,19 +2721,11 @@ intel_reduce_m_n_ratio(u32 *num, u32 *den)
 	}
 }
 
-static void compute_m_n(unsigned int m, unsigned int n,
-			u32 *ret_m, u32 *ret_n,
-			bool constant_n)
+static void compute_m_n(u32 *ret_m, u32 *ret_n,
+			u32 m, u32 n, u32 constant_n)
 {
-	/*
-	 * Several DP dongles in particular seem to be fussy about
-	 * too large link M/N values. Give N value as 0x8000 that
-	 * should be acceptable by specific devices. 0x8000 is the
-	 * specified fixed N value for asynchronous clock mode,
-	 * which the devices expect also in synchronous clock mode.
-	 */
 	if (constant_n)
-		*ret_n = DP_LINK_CONSTANT_N_VALUE;
+		*ret_n = constant_n;
 	else
 		*ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
 
@@ -2745,22 +2737,28 @@ void
 intel_link_compute_m_n(u16 bits_per_pixel, int nlanes,
 		       int pixel_clock, int link_clock,
 		       struct intel_link_m_n *m_n,
-		       bool constant_n, bool fec_enable)
+		       bool fec_enable)
 {
 	u32 data_clock = bits_per_pixel * pixel_clock;
 
 	if (fec_enable)
 		data_clock = intel_dp_mode_to_fec_clock(data_clock);
 
+	/*
+	 * Windows/BIOS uses fixed M/N values always. Follow suit.
+	 *
+	 * Also several DP dongles in particular seem to be fussy
+	 * about too large link M/N values. Presumably the 20bit
+	 * value used by Windows/BIOS is acceptable to everyone.
+	 */
 	m_n->tu = 64;
-	compute_m_n(data_clock,
-		    link_clock * nlanes * 8,
-		    &m_n->data_m, &m_n->data_n,
-		    constant_n);
-
-	compute_m_n(pixel_clock, link_clock,
-		    &m_n->link_m, &m_n->link_n,
-		    constant_n);
+	compute_m_n(&m_n->data_m, &m_n->data_n,
+		    data_clock, link_clock * nlanes * 8,
+		    0x8000000);
+
+	compute_m_n(&m_n->link_m, &m_n->link_n,
+		    pixel_clock, link_clock,
+		    0x80000);
 }
 
 static void intel_panel_sanitize_ssc(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index e895277c4cd9..ae06153210b7 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -547,7 +547,7 @@ u8 intel_calc_active_pipes(struct intel_atomic_state *state,
 void intel_link_compute_m_n(u16 bpp, int nlanes,
 			    int pixel_clock, int link_clock,
 			    struct intel_link_m_n *m_n,
-			    bool constant_n, bool fec_enable);
+			    bool fec_enable);
 u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
 			      u32 pixel_format, u64 modifier);
 enum drm_mode_status
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 3b94715779c0..2f9b1c02ad02 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1927,7 +1927,7 @@ static bool can_enable_drrs(struct intel_connector *connector,
 static void
 intel_dp_drrs_compute_config(struct intel_connector *connector,
 			     struct intel_crtc_state *pipe_config,
-			     int output_bpp, bool constant_n)
+			     int output_bpp)
 {
 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
 	const struct drm_display_mode *downclock_mode =
@@ -1954,7 +1954,7 @@ intel_dp_drrs_compute_config(struct intel_connector *connector,
 
 	intel_link_compute_m_n(output_bpp, pipe_config->lane_count, pixel_clock,
 			       pipe_config->port_clock, &pipe_config->dp_m2_n2,
-			       constant_n, pipe_config->fec_enable);
+			       pipe_config->fec_enable);
 
 	/* FIXME: abstract this better */
 	if (pipe_config->splitter.enable)
@@ -2029,7 +2029,6 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
 	const struct drm_display_mode *fixed_mode;
 	struct intel_connector *connector = intel_dp->attached_connector;
-	bool constant_n = drm_dp_has_quirk(&intel_dp->desc, DP_DPCD_QUIRK_CONSTANT_N);
 	int ret = 0, output_bpp;
 
 	if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv) && encoder->port != PORT_A)
@@ -2108,7 +2107,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 			       adjusted_mode->crtc_clock,
 			       pipe_config->port_clock,
 			       &pipe_config->dp_m_n,
-			       constant_n, pipe_config->fec_enable);
+			       pipe_config->fec_enable);
 
 	/* FIXME: abstract this better */
 	if (pipe_config->splitter.enable)
@@ -2119,8 +2118,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 
 	intel_vrr_compute_config(pipe_config, conn_state);
 	intel_psr_compute_config(intel_dp, pipe_config, conn_state);
-	intel_dp_drrs_compute_config(connector, pipe_config,
-				     output_bpp, constant_n);
+	intel_dp_drrs_compute_config(connector, pipe_config, output_bpp);
 	intel_dp_compute_vsc_sdp(intel_dp, pipe_config, conn_state);
 	intel_dp_compute_hdr_metadata_infoframe_sdp(intel_dp, pipe_config, conn_state);
 
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 14d2a64193b2..eafcc24f4f73 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -57,7 +57,6 @@ static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder,
 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
 	const struct drm_display_mode *adjusted_mode =
 		&crtc_state->hw.adjusted_mode;
-	bool constant_n = drm_dp_has_quirk(&intel_dp->desc, DP_DPCD_QUIRK_CONSTANT_N);
 	int bpp, slots = -EINVAL;
 
 	crtc_state->lane_count = limits->max_lane_count;
@@ -93,7 +92,7 @@ static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder,
 			       adjusted_mode->crtc_clock,
 			       crtc_state->port_clock,
 			       &crtc_state->dp_m_n,
-			       constant_n, crtc_state->fec_enable);
+			       crtc_state->fec_enable);
 	crtc_state->dp_m_n.tu = slots;
 
 	return 0;
diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c
index f67dd4f05bab..7f47e5c85c81 100644
--- a/drivers/gpu/drm/i915/display/intel_fdi.c
+++ b/drivers/gpu/drm/i915/display/intel_fdi.c
@@ -256,7 +256,7 @@ retry:
 	pipe_config->fdi_lanes = lane;
 
 	intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
-			       link_bw, &pipe_config->fdi_m_n, false, false);
+			       link_bw, &pipe_config->fdi_m_n, false);
 
 	ret = ilk_check_fdi_lanes(dev, crtc->pipe, pipe_config);
 	if (ret == -EDEADLK)
-- 
cgit v1.2.3


From f2c9df101095bfef7682caec8a5fa7d4f3b29182 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 7 Sep 2022 12:10:57 +0300
Subject: drm/i915: Round TMDS clock to nearest
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Use round-to-nearest behavour when calculating the TMDS clock.
Matches what we do for most other clock related things.

Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907091057.11572-18-ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 3 ++-
 drivers/gpu/drm/i915/display/intel_hdmi.c    | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index c57b5b1d6940..b0261d0e5228 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4505,7 +4505,8 @@ int intel_crtc_dotclock(const struct intel_crtc_state *pipe_config)
 		dotclock = intel_dotclock_calculate(pipe_config->port_clock,
 						    &pipe_config->dp_m_n);
 	else if (pipe_config->has_hdmi_sink && pipe_config->pipe_bpp > 24)
-		dotclock = pipe_config->port_clock * 24 / pipe_config->pipe_bpp;
+		dotclock = DIV_ROUND_CLOSEST(pipe_config->port_clock * 24,
+					     pipe_config->pipe_bpp);
 	else
 		dotclock = pipe_config->port_clock;
 
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 09f85afeb2d4..7816b2a33fee 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1892,7 +1892,7 @@ int intel_hdmi_tmds_clock(int clock, int bpc, bool ycbcr420_output)
 	 *  1.5x for 12bpc
 	 *  1.25x for 10bpc
 	 */
-	return clock * bpc / 8;
+	return DIV_ROUND_CLOSEST(clock * bpc, 8);
 }
 
 static bool intel_hdmi_source_bpc_possible(struct drm_i915_private *i915, int bpc)
-- 
cgit v1.2.3


From e2a5c05de6753781d69245da871f58fcae6d0bb0 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Thu, 8 Sep 2022 19:57:02 +0300
Subject: drm/i915/dsb: hide struct intel_dsb better
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

struct intel_dsb can be an opaque type, hidden in intel_dsb.c. Make it
so. Reduce related includes while at it.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908165702.973854-1-jani.nikula@intel.com
---
 drivers/gpu/drm/i915/display/intel_color.c   |  1 +
 drivers/gpu/drm/i915/display/intel_display.c |  1 +
 drivers/gpu/drm/i915/display/intel_dsb.c     | 30 ++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_dsb.h     | 28 --------------------------
 drivers/gpu/drm/i915/i915_drv.h              |  1 -
 5 files changed, 32 insertions(+), 29 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index ed98c732b24e..6bda4274eae9 100644
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -26,6 +26,7 @@
 #include "intel_de.h"
 #include "intel_display_types.h"
 #include "intel_dpll.h"
+#include "intel_dsb.h"
 #include "vlv_dsi_pll.h"
 
 struct intel_color_funcs {
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index b0261d0e5228..1a38c2083b04 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -92,6 +92,7 @@
 #include "intel_dmc.h"
 #include "intel_dp_link_training.h"
 #include "intel_dpt.h"
+#include "intel_dsb.h"
 #include "intel_fbc.h"
 #include "intel_fbdev.h"
 #include "intel_fdi.h"
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c
index c4affcb216fd..fc9c3e41c333 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.c
+++ b/drivers/gpu/drm/i915/display/intel_dsb.c
@@ -9,6 +9,36 @@
 #include "i915_drv.h"
 #include "intel_de.h"
 #include "intel_display_types.h"
+#include "intel_dsb.h"
+
+struct i915_vma;
+
+enum dsb_id {
+	INVALID_DSB = -1,
+	DSB1,
+	DSB2,
+	DSB3,
+	MAX_DSB_PER_PIPE
+};
+
+struct intel_dsb {
+	enum dsb_id id;
+	u32 *cmd_buf;
+	struct i915_vma *vma;
+
+	/*
+	 * free_pos will point the first free entry position
+	 * and help in calculating tail of command buffer.
+	 */
+	int free_pos;
+
+	/*
+	 * ins_start_offset will help to store start address of the dsb
+	 * instuction and help in identifying the batch of auto-increment
+	 * register.
+	 */
+	u32 ins_start_offset;
+};
 
 #define DSB_BUF_SIZE    (2 * PAGE_SIZE)
 
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.h b/drivers/gpu/drm/i915/display/intel_dsb.h
index 6cb9c580cdca..74dd2b3343bb 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.h
+++ b/drivers/gpu/drm/i915/display/intel_dsb.h
@@ -11,34 +11,6 @@
 #include "i915_reg_defs.h"
 
 struct intel_crtc_state;
-struct i915_vma;
-
-enum dsb_id {
-	INVALID_DSB = -1,
-	DSB1,
-	DSB2,
-	DSB3,
-	MAX_DSB_PER_PIPE
-};
-
-struct intel_dsb {
-	enum dsb_id id;
-	u32 *cmd_buf;
-	struct i915_vma *vma;
-
-	/*
-	 * free_pos will point the first free entry position
-	 * and help in calculating tail of command buffer.
-	 */
-	int free_pos;
-
-	/*
-	 * ins_start_offset will help to store start address of the dsb
-	 * instuction and help in identifying the batch of auto-increment
-	 * register.
-	 */
-	u32 ins_start_offset;
-};
 
 void intel_dsb_prepare(struct intel_crtc_state *crtc_state);
 void intel_dsb_cleanup(struct intel_crtc_state *crtc_state);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 717c702d2aaf..19682c47b79c 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -38,7 +38,6 @@
 
 #include "display/intel_display.h"
 #include "display/intel_display_core.h"
-#include "display/intel_dsb.h"
 
 #include "gem/i915_gem_context_types.h"
 #include "gem/i915_gem_lmem.h"
-- 
cgit v1.2.3


From 42a0d256496f4526046b9779ea6e49018b58f779 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Thu, 8 Sep 2022 22:16:45 +0300
Subject: drm/i915: Extract skl_watermark.c
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Pull all the skl+ watermark code (and the dbuf/sagv/ipc code
since it's all sort of intertwined and I'm too lazy to think
of a finer grained split right now) into its own file from the
catch-all intel_pm.c.

Also sneak in the s/dev_priv/i915/ rename while at it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908191646.20239-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/Makefile                      |    3 +-
 drivers/gpu/drm/i915/display/intel_atomic_plane.c  |    2 +-
 drivers/gpu/drm/i915/display/intel_bw.c            |    4 +-
 drivers/gpu/drm/i915/display/intel_cursor.c        |    2 +-
 drivers/gpu/drm/i915/display/intel_display.c       |    1 +
 .../gpu/drm/i915/display/intel_display_debugfs.c   |    1 +
 drivers/gpu/drm/i915/display/intel_display_power.c |    2 +-
 .../drm/i915/display/intel_display_power_well.c    |    2 +-
 drivers/gpu/drm/i915/display/intel_modeset_setup.c |    1 +
 .../gpu/drm/i915/display/intel_modeset_verify.c    |    2 +-
 drivers/gpu/drm/i915/display/skl_universal_plane.c |    2 +-
 drivers/gpu/drm/i915/display/skl_watermark.c       | 3470 ++++++++++++++++++
 drivers/gpu/drm/i915/display/skl_watermark.h       |   78 +
 drivers/gpu/drm/i915/i915_driver.c                 |    1 +
 drivers/gpu/drm/i915/intel_pm.c                    | 3772 +-------------------
 drivers/gpu/drm/i915/intel_pm.h                    |   65 +-
 16 files changed, 3723 insertions(+), 3685 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/display/skl_watermark.c
 create mode 100644 drivers/gpu/drm/i915/display/skl_watermark.h

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 522ef9b4aff3..8f35be02b80e 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -257,7 +257,8 @@ i915-y += \
 	display/intel_vga.o \
 	display/i9xx_plane.o \
 	display/skl_scaler.o \
-	display/skl_universal_plane.o
+	display/skl_universal_plane.o \
+	display/skl_watermark.o
 i915-$(CONFIG_ACPI) += \
 	display/intel_acpi.o \
 	display/intel_opregion.o
diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index efe8591619e3..08695cad7eec 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -43,9 +43,9 @@
 #include "intel_display_types.h"
 #include "intel_fb.h"
 #include "intel_fb_pin.h"
-#include "intel_pm.h"
 #include "intel_sprite.h"
 #include "skl_scaler.h"
+#include "skl_watermark.h"
 
 static void intel_plane_state_reset(struct intel_plane_state *plane_state,
 				    struct intel_plane *plane)
diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index 61308ebe48aa..6a1f0300430c 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -5,15 +5,17 @@
 
 #include <drm/drm_atomic_state_helper.h>
 
+#include "i915_drv.h"
 #include "i915_reg.h"
 #include "i915_utils.h"
 #include "intel_atomic.h"
 #include "intel_bw.h"
 #include "intel_cdclk.h"
+#include "intel_display_core.h"
 #include "intel_display_types.h"
+#include "skl_watermark.h"
 #include "intel_mchbar_regs.h"
 #include "intel_pcode.h"
-#include "intel_pm.h"
 
 /* Parameters for Qclk Geyserville (QGV) */
 struct intel_qgv_point {
diff --git a/drivers/gpu/drm/i915/display/intel_cursor.c b/drivers/gpu/drm/i915/display/intel_cursor.c
index c2797ad2d313..5b8ab2f58930 100644
--- a/drivers/gpu/drm/i915/display/intel_cursor.c
+++ b/drivers/gpu/drm/i915/display/intel_cursor.c
@@ -20,9 +20,9 @@
 #include "intel_fb.h"
 #include "intel_fb_pin.h"
 #include "intel_frontbuffer.h"
-#include "intel_pm.h"
 #include "intel_psr.h"
 #include "intel_sprite.h"
+#include "skl_watermark.h"
 
 /* Cursor formats */
 static const u32 intel_cursor_formats[] = {
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 1a38c2083b04..f799f8274e67 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -119,6 +119,7 @@
 #include "i9xx_plane.h"
 #include "skl_scaler.h"
 #include "skl_universal_plane.h"
+#include "skl_watermark.h"
 #include "vlv_dsi.h"
 #include "vlv_dsi_pll.h"
 #include "vlv_dsi_regs.h"
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
index 5dc364e9db49..fe40e2a226d6 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -26,6 +26,7 @@
 #include "intel_pm.h"
 #include "intel_psr.h"
 #include "intel_sprite.h"
+#include "skl_watermark.h"
 
 static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node)
 {
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 1af1705d730d..1e608b9e5055 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -19,8 +19,8 @@
 #include "intel_mchbar_regs.h"
 #include "intel_pch_refclk.h"
 #include "intel_pcode.h"
-#include "intel_pm.h"
 #include "intel_snps_phy.h"
+#include "skl_watermark.h"
 #include "vlv_sideband.h"
 
 #define for_each_power_domain_well(__dev_priv, __power_well, __domain)	\
diff --git a/drivers/gpu/drm/i915/display/intel_display_power_well.c b/drivers/gpu/drm/i915/display/intel_display_power_well.c
index 29cc05c04c65..b8790edd454f 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power_well.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power_well.c
@@ -17,10 +17,10 @@
 #include "intel_dpll.h"
 #include "intel_hotplug.h"
 #include "intel_pcode.h"
-#include "intel_pm.h"
 #include "intel_pps.h"
 #include "intel_tc.h"
 #include "intel_vga.h"
+#include "skl_watermark.h"
 #include "vlv_sideband.h"
 #include "vlv_sideband_reg.h"
 
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_setup.c b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
index aed386dce96a..cbfabd58b75a 100644
--- a/drivers/gpu/drm/i915/display/intel_modeset_setup.c
+++ b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
@@ -23,6 +23,7 @@
 #include "intel_modeset_setup.h"
 #include "intel_pch_display.h"
 #include "intel_pm.h"
+#include "skl_watermark.h"
 
 static void intel_crtc_disable_noatomic(struct intel_crtc *crtc,
 					struct drm_modeset_acquire_ctx *ctx)
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_verify.c b/drivers/gpu/drm/i915/display/intel_modeset_verify.c
index 073607162acc..0fdcf2e6d57f 100644
--- a/drivers/gpu/drm/i915/display/intel_modeset_verify.c
+++ b/drivers/gpu/drm/i915/display/intel_modeset_verify.c
@@ -15,8 +15,8 @@
 #include "intel_display_types.h"
 #include "intel_fdi.h"
 #include "intel_modeset_verify.h"
-#include "intel_pm.h"
 #include "intel_snps_phy.h"
+#include "skl_watermark.h"
 
 /*
  * Cross check the actual hw state with our own modeset state tracking (and its
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index e4c41d8b6b44..67ab5ef00262 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -15,11 +15,11 @@
 #include "intel_display_types.h"
 #include "intel_fb.h"
 #include "intel_fbc.h"
-#include "intel_pm.h"
 #include "intel_psr.h"
 #include "intel_sprite.h"
 #include "skl_scaler.h"
 #include "skl_universal_plane.h"
+#include "skl_watermark.h"
 #include "pxp/intel_pxp.h"
 
 static const u32 skl_plane_formats[] = {
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
new file mode 100644
index 000000000000..25ca92ae8958
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -0,0 +1,3470 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include <drm/drm_blend.h>
+
+#include "intel_atomic.h"
+#include "intel_atomic_plane.h"
+#include "intel_bw.h"
+#include "intel_de.h"
+#include "intel_display.h"
+#include "intel_display_power.h"
+#include "intel_display_types.h"
+#include "intel_fb.h"
+#include "skl_watermark.h"
+
+#include "i915_drv.h"
+#include "i915_fixed.h"
+#include "i915_reg.h"
+#include "intel_pcode.h"
+#include "intel_pm.h"
+
+static void skl_sagv_disable(struct drm_i915_private *i915);
+
+/* Stores plane specific WM parameters */
+struct skl_wm_params {
+	bool x_tiled, y_tiled;
+	bool rc_surface;
+	bool is_planar;
+	u32 width;
+	u8 cpp;
+	u32 plane_pixel_rate;
+	u32 y_min_scanlines;
+	u32 plane_bytes_per_line;
+	uint_fixed_16_16_t plane_blocks_per_line;
+	uint_fixed_16_16_t y_tile_minimum;
+	u32 linetime_us;
+	u32 dbuf_block_size;
+};
+
+u8 intel_enabled_dbuf_slices_mask(struct drm_i915_private *i915)
+{
+	u8 enabled_slices = 0;
+	enum dbuf_slice slice;
+
+	for_each_dbuf_slice(i915, slice) {
+		if (intel_uncore_read(&i915->uncore,
+				      DBUF_CTL_S(slice)) & DBUF_POWER_STATE)
+			enabled_slices |= BIT(slice);
+	}
+
+	return enabled_slices;
+}
+
+/*
+ * FIXME: We still don't have the proper code detect if we need to apply the WA,
+ * so assume we'll always need it in order to avoid underruns.
+ */
+static bool skl_needs_memory_bw_wa(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) == 9;
+}
+
+static bool
+intel_has_sagv(struct drm_i915_private *i915)
+{
+	return DISPLAY_VER(i915) >= 9 && !IS_LP(i915) &&
+		i915->display.sagv.status != I915_SAGV_NOT_CONTROLLED;
+}
+
+static u32
+intel_sagv_block_time(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 12) {
+		u32 val = 0;
+		int ret;
+
+		ret = snb_pcode_read(&i915->uncore,
+				     GEN12_PCODE_READ_SAGV_BLOCK_TIME_US,
+				     &val, NULL);
+		if (ret) {
+			drm_dbg_kms(&i915->drm, "Couldn't read SAGV block time!\n");
+			return 0;
+		}
+
+		return val;
+	} else if (DISPLAY_VER(i915) == 11) {
+		return 10;
+	} else if (DISPLAY_VER(i915) == 9 && !IS_LP(i915)) {
+		return 30;
+	} else {
+		return 0;
+	}
+}
+
+static void intel_sagv_init(struct drm_i915_private *i915)
+{
+	if (!intel_has_sagv(i915))
+		i915->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
+
+	/*
+	 * Probe to see if we have working SAGV control.
+	 * For icl+ this was already determined by intel_bw_init_hw().
+	 */
+	if (DISPLAY_VER(i915) < 11)
+		skl_sagv_disable(i915);
+
+	drm_WARN_ON(&i915->drm, i915->display.sagv.status == I915_SAGV_UNKNOWN);
+
+	i915->display.sagv.block_time_us = intel_sagv_block_time(i915);
+
+	drm_dbg_kms(&i915->drm, "SAGV supported: %s, original SAGV block time: %u us\n",
+		    str_yes_no(intel_has_sagv(i915)), i915->display.sagv.block_time_us);
+
+	/* avoid overflow when adding with wm0 latency/etc. */
+	if (drm_WARN(&i915->drm, i915->display.sagv.block_time_us > U16_MAX,
+		     "Excessive SAGV block time %u, ignoring\n",
+		     i915->display.sagv.block_time_us))
+		i915->display.sagv.block_time_us = 0;
+
+	if (!intel_has_sagv(i915))
+		i915->display.sagv.block_time_us = 0;
+}
+
+/*
+ * SAGV dynamically adjusts the system agent voltage and clock frequencies
+ * depending on power and performance requirements. The display engine access
+ * to system memory is blocked during the adjustment time. Because of the
+ * blocking time, having this enabled can cause full system hangs and/or pipe
+ * underruns if we don't meet all of the following requirements:
+ *
+ *  - <= 1 pipe enabled
+ *  - All planes can enable watermarks for latencies >= SAGV engine block time
+ *  - We're not using an interlaced display configuration
+ */
+static void skl_sagv_enable(struct drm_i915_private *i915)
+{
+	int ret;
+
+	if (!intel_has_sagv(i915))
+		return;
+
+	if (i915->display.sagv.status == I915_SAGV_ENABLED)
+		return;
+
+	drm_dbg_kms(&i915->drm, "Enabling SAGV\n");
+	ret = snb_pcode_write(&i915->uncore, GEN9_PCODE_SAGV_CONTROL,
+			      GEN9_SAGV_ENABLE);
+
+	/* We don't need to wait for SAGV when enabling */
+
+	/*
+	 * Some skl systems, pre-release machines in particular,
+	 * don't actually have SAGV.
+	 */
+	if (IS_SKYLAKE(i915) && ret == -ENXIO) {
+		drm_dbg(&i915->drm, "No SAGV found on system, ignoring\n");
+		i915->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
+		return;
+	} else if (ret < 0) {
+		drm_err(&i915->drm, "Failed to enable SAGV\n");
+		return;
+	}
+
+	i915->display.sagv.status = I915_SAGV_ENABLED;
+}
+
+static void skl_sagv_disable(struct drm_i915_private *i915)
+{
+	int ret;
+
+	if (!intel_has_sagv(i915))
+		return;
+
+	if (i915->display.sagv.status == I915_SAGV_DISABLED)
+		return;
+
+	drm_dbg_kms(&i915->drm, "Disabling SAGV\n");
+	/* bspec says to keep retrying for at least 1 ms */
+	ret = skl_pcode_request(&i915->uncore, GEN9_PCODE_SAGV_CONTROL,
+				GEN9_SAGV_DISABLE,
+				GEN9_SAGV_IS_DISABLED, GEN9_SAGV_IS_DISABLED,
+				1);
+	/*
+	 * Some skl systems, pre-release machines in particular,
+	 * don't actually have SAGV.
+	 */
+	if (IS_SKYLAKE(i915) && ret == -ENXIO) {
+		drm_dbg(&i915->drm, "No SAGV found on system, ignoring\n");
+		i915->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
+		return;
+	} else if (ret < 0) {
+		drm_err(&i915->drm, "Failed to disable SAGV (%d)\n", ret);
+		return;
+	}
+
+	i915->display.sagv.status = I915_SAGV_DISABLED;
+}
+
+static void skl_sagv_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_bw_state *new_bw_state =
+		intel_atomic_get_new_bw_state(state);
+
+	if (!new_bw_state)
+		return;
+
+	if (!intel_can_enable_sagv(i915, new_bw_state))
+		skl_sagv_disable(i915);
+}
+
+static void skl_sagv_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_bw_state *new_bw_state =
+		intel_atomic_get_new_bw_state(state);
+
+	if (!new_bw_state)
+		return;
+
+	if (intel_can_enable_sagv(i915, new_bw_state))
+		skl_sagv_enable(i915);
+}
+
+static void icl_sagv_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_bw_state *old_bw_state =
+		intel_atomic_get_old_bw_state(state);
+	const struct intel_bw_state *new_bw_state =
+		intel_atomic_get_new_bw_state(state);
+	u16 old_mask, new_mask;
+
+	if (!new_bw_state)
+		return;
+
+	old_mask = old_bw_state->qgv_points_mask;
+	new_mask = old_bw_state->qgv_points_mask | new_bw_state->qgv_points_mask;
+
+	if (old_mask == new_mask)
+		return;
+
+	WARN_ON(!new_bw_state->base.changed);
+
+	drm_dbg_kms(&i915->drm, "Restricting QGV points: 0x%x -> 0x%x\n",
+		    old_mask, new_mask);
+
+	/*
+	 * Restrict required qgv points before updating the configuration.
+	 * According to BSpec we can't mask and unmask qgv points at the same
+	 * time. Also masking should be done before updating the configuration
+	 * and unmasking afterwards.
+	 */
+	icl_pcode_restrict_qgv_points(i915, new_mask);
+}
+
+static void icl_sagv_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_bw_state *old_bw_state =
+		intel_atomic_get_old_bw_state(state);
+	const struct intel_bw_state *new_bw_state =
+		intel_atomic_get_new_bw_state(state);
+	u16 old_mask, new_mask;
+
+	if (!new_bw_state)
+		return;
+
+	old_mask = old_bw_state->qgv_points_mask | new_bw_state->qgv_points_mask;
+	new_mask = new_bw_state->qgv_points_mask;
+
+	if (old_mask == new_mask)
+		return;
+
+	WARN_ON(!new_bw_state->base.changed);
+
+	drm_dbg_kms(&i915->drm, "Relaxing QGV points: 0x%x -> 0x%x\n",
+		    old_mask, new_mask);
+
+	/*
+	 * Allow required qgv points after updating the configuration.
+	 * According to BSpec we can't mask and unmask qgv points at the same
+	 * time. Also masking should be done before updating the configuration
+	 * and unmasking afterwards.
+	 */
+	icl_pcode_restrict_qgv_points(i915, new_mask);
+}
+
+void intel_sagv_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+
+	/*
+	 * Just return if we can't control SAGV or don't have it.
+	 * This is different from situation when we have SAGV but just can't
+	 * afford it due to DBuf limitation - in case if SAGV is completely
+	 * disabled in a BIOS, we are not even allowed to send a PCode request,
+	 * as it will throw an error. So have to check it here.
+	 */
+	if (!intel_has_sagv(i915))
+		return;
+
+	if (DISPLAY_VER(i915) >= 11)
+		icl_sagv_pre_plane_update(state);
+	else
+		skl_sagv_pre_plane_update(state);
+}
+
+void intel_sagv_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+
+	/*
+	 * Just return if we can't control SAGV or don't have it.
+	 * This is different from situation when we have SAGV but just can't
+	 * afford it due to DBuf limitation - in case if SAGV is completely
+	 * disabled in a BIOS, we are not even allowed to send a PCode request,
+	 * as it will throw an error. So have to check it here.
+	 */
+	if (!intel_has_sagv(i915))
+		return;
+
+	if (DISPLAY_VER(i915) >= 11)
+		icl_sagv_post_plane_update(state);
+	else
+		skl_sagv_post_plane_update(state);
+}
+
+static bool skl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum plane_id plane_id;
+	int max_level = INT_MAX;
+
+	if (!intel_has_sagv(i915))
+		return false;
+
+	if (!crtc_state->hw.active)
+		return true;
+
+	if (crtc_state->hw.pipe_mode.flags & DRM_MODE_FLAG_INTERLACE)
+		return false;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		const struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+		int level;
+
+		/* Skip this plane if it's not enabled */
+		if (!wm->wm[0].enable)
+			continue;
+
+		/* Find the highest enabled wm level for this plane */
+		for (level = ilk_wm_max_level(i915);
+		     !wm->wm[level].enable; --level)
+		     { }
+
+		/* Highest common enabled wm level for all planes */
+		max_level = min(level, max_level);
+	}
+
+	/* No enabled planes? */
+	if (max_level == INT_MAX)
+		return true;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		const struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+
+		/*
+		 * All enabled planes must have enabled a common wm level that
+		 * can tolerate memory latencies higher than sagv_block_time_us
+		 */
+		if (wm->wm[0].enable && !wm->wm[max_level].can_sagv)
+			return false;
+	}
+
+	return true;
+}
+
+static bool tgl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	enum plane_id plane_id;
+
+	if (!crtc_state->hw.active)
+		return true;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		const struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+
+		if (wm->wm[0].enable && !wm->sagv.wm0.enable)
+			return false;
+	}
+
+	return true;
+}
+
+static bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+
+	if (DISPLAY_VER(i915) >= 12)
+		return tgl_crtc_can_enable_sagv(crtc_state);
+	else
+		return skl_crtc_can_enable_sagv(crtc_state);
+}
+
+bool intel_can_enable_sagv(struct drm_i915_private *i915,
+			   const struct intel_bw_state *bw_state)
+{
+	if (DISPLAY_VER(i915) < 11 &&
+	    bw_state->active_pipes && !is_power_of_2(bw_state->active_pipes))
+		return false;
+
+	return bw_state->pipe_sagv_reject == 0;
+}
+
+static int intel_compute_sagv_mask(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	int ret;
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *new_crtc_state;
+	struct intel_bw_state *new_bw_state = NULL;
+	const struct intel_bw_state *old_bw_state = NULL;
+	int i;
+
+	for_each_new_intel_crtc_in_state(state, crtc,
+					 new_crtc_state, i) {
+		new_bw_state = intel_atomic_get_bw_state(state);
+		if (IS_ERR(new_bw_state))
+			return PTR_ERR(new_bw_state);
+
+		old_bw_state = intel_atomic_get_old_bw_state(state);
+
+		if (intel_crtc_can_enable_sagv(new_crtc_state))
+			new_bw_state->pipe_sagv_reject &= ~BIT(crtc->pipe);
+		else
+			new_bw_state->pipe_sagv_reject |= BIT(crtc->pipe);
+	}
+
+	if (!new_bw_state)
+		return 0;
+
+	new_bw_state->active_pipes =
+		intel_calc_active_pipes(state, old_bw_state->active_pipes);
+
+	if (new_bw_state->active_pipes != old_bw_state->active_pipes) {
+		ret = intel_atomic_lock_global_state(&new_bw_state->base);
+		if (ret)
+			return ret;
+	}
+
+	if (intel_can_enable_sagv(i915, new_bw_state) !=
+	    intel_can_enable_sagv(i915, old_bw_state)) {
+		ret = intel_atomic_serialize_global_state(&new_bw_state->base);
+		if (ret)
+			return ret;
+	} else if (new_bw_state->pipe_sagv_reject != old_bw_state->pipe_sagv_reject) {
+		ret = intel_atomic_lock_global_state(&new_bw_state->base);
+		if (ret)
+			return ret;
+	}
+
+	for_each_new_intel_crtc_in_state(state, crtc,
+					 new_crtc_state, i) {
+		struct skl_pipe_wm *pipe_wm = &new_crtc_state->wm.skl.optimal;
+
+		/*
+		 * We store use_sagv_wm in the crtc state rather than relying on
+		 * that bw state since we have no convenient way to get at the
+		 * latter from the plane commit hooks (especially in the legacy
+		 * cursor case)
+		 */
+		pipe_wm->use_sagv_wm = !HAS_HW_SAGV_WM(i915) &&
+			DISPLAY_VER(i915) >= 12 &&
+			intel_can_enable_sagv(i915, new_bw_state);
+	}
+
+	return 0;
+}
+
+static u16 skl_ddb_entry_init(struct skl_ddb_entry *entry,
+			      u16 start, u16 end)
+{
+	entry->start = start;
+	entry->end = end;
+
+	return end;
+}
+
+static int intel_dbuf_slice_size(struct drm_i915_private *i915)
+{
+	return INTEL_INFO(i915)->display.dbuf.size /
+		hweight8(INTEL_INFO(i915)->display.dbuf.slice_mask);
+}
+
+static void
+skl_ddb_entry_for_slices(struct drm_i915_private *i915, u8 slice_mask,
+			 struct skl_ddb_entry *ddb)
+{
+	int slice_size = intel_dbuf_slice_size(i915);
+
+	if (!slice_mask) {
+		ddb->start = 0;
+		ddb->end = 0;
+		return;
+	}
+
+	ddb->start = (ffs(slice_mask) - 1) * slice_size;
+	ddb->end = fls(slice_mask) * slice_size;
+
+	WARN_ON(ddb->start >= ddb->end);
+	WARN_ON(ddb->end > INTEL_INFO(i915)->display.dbuf.size);
+}
+
+static unsigned int mbus_ddb_offset(struct drm_i915_private *i915, u8 slice_mask)
+{
+	struct skl_ddb_entry ddb;
+
+	if (slice_mask & (BIT(DBUF_S1) | BIT(DBUF_S2)))
+		slice_mask = BIT(DBUF_S1);
+	else if (slice_mask & (BIT(DBUF_S3) | BIT(DBUF_S4)))
+		slice_mask = BIT(DBUF_S3);
+
+	skl_ddb_entry_for_slices(i915, slice_mask, &ddb);
+
+	return ddb.start;
+}
+
+u32 skl_ddb_dbuf_slice_mask(struct drm_i915_private *i915,
+			    const struct skl_ddb_entry *entry)
+{
+	int slice_size = intel_dbuf_slice_size(i915);
+	enum dbuf_slice start_slice, end_slice;
+	u8 slice_mask = 0;
+
+	if (!skl_ddb_entry_size(entry))
+		return 0;
+
+	start_slice = entry->start / slice_size;
+	end_slice = (entry->end - 1) / slice_size;
+
+	/*
+	 * Per plane DDB entry can in a really worst case be on multiple slices
+	 * but single entry is anyway contigious.
+	 */
+	while (start_slice <= end_slice) {
+		slice_mask |= BIT(start_slice);
+		start_slice++;
+	}
+
+	return slice_mask;
+}
+
+static unsigned int intel_crtc_ddb_weight(const struct intel_crtc_state *crtc_state)
+{
+	const struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode;
+	int hdisplay, vdisplay;
+
+	if (!crtc_state->hw.active)
+		return 0;
+
+	/*
+	 * Watermark/ddb requirement highly depends upon width of the
+	 * framebuffer, So instead of allocating DDB equally among pipes
+	 * distribute DDB based on resolution/width of the display.
+	 */
+	drm_mode_get_hv_timing(pipe_mode, &hdisplay, &vdisplay);
+
+	return hdisplay;
+}
+
+static void intel_crtc_dbuf_weights(const struct intel_dbuf_state *dbuf_state,
+				    enum pipe for_pipe,
+				    unsigned int *weight_start,
+				    unsigned int *weight_end,
+				    unsigned int *weight_total)
+{
+	struct drm_i915_private *i915 =
+		to_i915(dbuf_state->base.state->base.dev);
+	enum pipe pipe;
+
+	*weight_start = 0;
+	*weight_end = 0;
+	*weight_total = 0;
+
+	for_each_pipe(i915, pipe) {
+		int weight = dbuf_state->weight[pipe];
+
+		/*
+		 * Do not account pipes using other slice sets
+		 * luckily as of current BSpec slice sets do not partially
+		 * intersect(pipes share either same one slice or same slice set
+		 * i.e no partial intersection), so it is enough to check for
+		 * equality for now.
+		 */
+		if (dbuf_state->slices[pipe] != dbuf_state->slices[for_pipe])
+			continue;
+
+		*weight_total += weight;
+		if (pipe < for_pipe) {
+			*weight_start += weight;
+			*weight_end += weight;
+		} else if (pipe == for_pipe) {
+			*weight_end += weight;
+		}
+	}
+}
+
+static int
+skl_crtc_allocate_ddb(struct intel_atomic_state *state, struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	unsigned int weight_total, weight_start, weight_end;
+	const struct intel_dbuf_state *old_dbuf_state =
+		intel_atomic_get_old_dbuf_state(state);
+	struct intel_dbuf_state *new_dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+	struct intel_crtc_state *crtc_state;
+	struct skl_ddb_entry ddb_slices;
+	enum pipe pipe = crtc->pipe;
+	unsigned int mbus_offset = 0;
+	u32 ddb_range_size;
+	u32 dbuf_slice_mask;
+	u32 start, end;
+	int ret;
+
+	if (new_dbuf_state->weight[pipe] == 0) {
+		skl_ddb_entry_init(&new_dbuf_state->ddb[pipe], 0, 0);
+		goto out;
+	}
+
+	dbuf_slice_mask = new_dbuf_state->slices[pipe];
+
+	skl_ddb_entry_for_slices(i915, dbuf_slice_mask, &ddb_slices);
+	mbus_offset = mbus_ddb_offset(i915, dbuf_slice_mask);
+	ddb_range_size = skl_ddb_entry_size(&ddb_slices);
+
+	intel_crtc_dbuf_weights(new_dbuf_state, pipe,
+				&weight_start, &weight_end, &weight_total);
+
+	start = ddb_range_size * weight_start / weight_total;
+	end = ddb_range_size * weight_end / weight_total;
+
+	skl_ddb_entry_init(&new_dbuf_state->ddb[pipe],
+			   ddb_slices.start - mbus_offset + start,
+			   ddb_slices.start - mbus_offset + end);
+
+out:
+	if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe] &&
+	    skl_ddb_entry_equal(&old_dbuf_state->ddb[pipe],
+				&new_dbuf_state->ddb[pipe]))
+		return 0;
+
+	ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
+	if (ret)
+		return ret;
+
+	crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
+	if (IS_ERR(crtc_state))
+		return PTR_ERR(crtc_state);
+
+	/*
+	 * Used for checking overlaps, so we need absolute
+	 * offsets instead of MBUS relative offsets.
+	 */
+	crtc_state->wm.skl.ddb.start = mbus_offset + new_dbuf_state->ddb[pipe].start;
+	crtc_state->wm.skl.ddb.end = mbus_offset + new_dbuf_state->ddb[pipe].end;
+
+	drm_dbg_kms(&i915->drm,
+		    "[CRTC:%d:%s] dbuf slices 0x%x -> 0x%x, ddb (%d - %d) -> (%d - %d), active pipes 0x%x -> 0x%x\n",
+		    crtc->base.base.id, crtc->base.name,
+		    old_dbuf_state->slices[pipe], new_dbuf_state->slices[pipe],
+		    old_dbuf_state->ddb[pipe].start, old_dbuf_state->ddb[pipe].end,
+		    new_dbuf_state->ddb[pipe].start, new_dbuf_state->ddb[pipe].end,
+		    old_dbuf_state->active_pipes, new_dbuf_state->active_pipes);
+
+	return 0;
+}
+
+static int skl_compute_wm_params(const struct intel_crtc_state *crtc_state,
+				 int width, const struct drm_format_info *format,
+				 u64 modifier, unsigned int rotation,
+				 u32 plane_pixel_rate, struct skl_wm_params *wp,
+				 int color_plane);
+
+static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
+				 struct intel_plane *plane,
+				 int level,
+				 unsigned int latency,
+				 const struct skl_wm_params *wp,
+				 const struct skl_wm_level *result_prev,
+				 struct skl_wm_level *result /* out */);
+
+static unsigned int
+skl_cursor_allocation(const struct intel_crtc_state *crtc_state,
+		      int num_active)
+{
+	struct intel_plane *plane = to_intel_plane(crtc_state->uapi.crtc->cursor);
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	int level, max_level = ilk_wm_max_level(i915);
+	struct skl_wm_level wm = {};
+	int ret, min_ddb_alloc = 0;
+	struct skl_wm_params wp;
+
+	ret = skl_compute_wm_params(crtc_state, 256,
+				    drm_format_info(DRM_FORMAT_ARGB8888),
+				    DRM_FORMAT_MOD_LINEAR,
+				    DRM_MODE_ROTATE_0,
+				    crtc_state->pixel_rate, &wp, 0);
+	drm_WARN_ON(&i915->drm, ret);
+
+	for (level = 0; level <= max_level; level++) {
+		unsigned int latency = i915->display.wm.skl_latency[level];
+
+		skl_compute_plane_wm(crtc_state, plane, level, latency, &wp, &wm, &wm);
+		if (wm.min_ddb_alloc == U16_MAX)
+			break;
+
+		min_ddb_alloc = wm.min_ddb_alloc;
+	}
+
+	return max(num_active == 1 ? 32 : 8, min_ddb_alloc);
+}
+
+static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg)
+{
+	skl_ddb_entry_init(entry,
+			   REG_FIELD_GET(PLANE_BUF_START_MASK, reg),
+			   REG_FIELD_GET(PLANE_BUF_END_MASK, reg));
+	if (entry->end)
+		entry->end++;
+}
+
+static void
+skl_ddb_get_hw_plane_state(struct drm_i915_private *i915,
+			   const enum pipe pipe,
+			   const enum plane_id plane_id,
+			   struct skl_ddb_entry *ddb,
+			   struct skl_ddb_entry *ddb_y)
+{
+	u32 val;
+
+	/* Cursor doesn't support NV12/planar, so no extra calculation needed */
+	if (plane_id == PLANE_CURSOR) {
+		val = intel_uncore_read(&i915->uncore, CUR_BUF_CFG(pipe));
+		skl_ddb_entry_init_from_hw(ddb, val);
+		return;
+	}
+
+	val = intel_uncore_read(&i915->uncore, PLANE_BUF_CFG(pipe, plane_id));
+	skl_ddb_entry_init_from_hw(ddb, val);
+
+	if (DISPLAY_VER(i915) >= 11)
+		return;
+
+	val = intel_uncore_read(&i915->uncore, PLANE_NV12_BUF_CFG(pipe, plane_id));
+	skl_ddb_entry_init_from_hw(ddb_y, val);
+}
+
+static void skl_pipe_ddb_get_hw_state(struct intel_crtc *crtc,
+				      struct skl_ddb_entry *ddb,
+				      struct skl_ddb_entry *ddb_y)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum intel_display_power_domain power_domain;
+	enum pipe pipe = crtc->pipe;
+	intel_wakeref_t wakeref;
+	enum plane_id plane_id;
+
+	power_domain = POWER_DOMAIN_PIPE(pipe);
+	wakeref = intel_display_power_get_if_enabled(i915, power_domain);
+	if (!wakeref)
+		return;
+
+	for_each_plane_id_on_crtc(crtc, plane_id)
+		skl_ddb_get_hw_plane_state(i915, pipe,
+					   plane_id,
+					   &ddb[plane_id],
+					   &ddb_y[plane_id]);
+
+	intel_display_power_put(i915, power_domain, wakeref);
+}
+
+struct dbuf_slice_conf_entry {
+	u8 active_pipes;
+	u8 dbuf_mask[I915_MAX_PIPES];
+	bool join_mbus;
+};
+
+/*
+ * Table taken from Bspec 12716
+ * Pipes do have some preferred DBuf slice affinity,
+ * plus there are some hardcoded requirements on how
+ * those should be distributed for multipipe scenarios.
+ * For more DBuf slices algorithm can get even more messy
+ * and less readable, so decided to use a table almost
+ * as is from BSpec itself - that way it is at least easier
+ * to compare, change and check.
+ */
+static const struct dbuf_slice_conf_entry icl_allowed_dbufs[] =
+/* Autogenerated with igt/tools/intel_dbuf_map tool: */
+{
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{}
+};
+
+/*
+ * Table taken from Bspec 49255
+ * Pipes do have some preferred DBuf slice affinity,
+ * plus there are some hardcoded requirements on how
+ * those should be distributed for multipipe scenarios.
+ * For more DBuf slices algorithm can get even more messy
+ * and less readable, so decided to use a table almost
+ * as is from BSpec itself - that way it is at least easier
+ * to compare, change and check.
+ */
+static const struct dbuf_slice_conf_entry tgl_allowed_dbufs[] =
+/* Autogenerated with igt/tools/intel_dbuf_map tool: */
+{
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S2) | BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_D] = BIT(DBUF_S2) | BIT(DBUF_S1),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S1),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S1),
+			[PIPE_C] = BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S2),
+		},
+	},
+	{}
+};
+
+static const struct dbuf_slice_conf_entry dg2_allowed_dbufs[] = {
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S3),
+			[PIPE_D] = BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3),
+			[PIPE_D] = BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3),
+			[PIPE_D] = BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1),
+			[PIPE_B] = BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3),
+			[PIPE_D] = BIT(DBUF_S4),
+		},
+	},
+	{}
+};
+
+static const struct dbuf_slice_conf_entry adlp_allowed_dbufs[] = {
+	/*
+	 * Keep the join_mbus cases first so check_mbus_joined()
+	 * will prefer them over the !join_mbus cases.
+	 */
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+		.join_mbus = true,
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+		.join_mbus = true,
+	},
+	{
+		.active_pipes = BIT(PIPE_A),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+		.join_mbus = false,
+	},
+	{
+		.active_pipes = BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+		.join_mbus = false,
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{
+		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
+		.dbuf_mask = {
+			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
+			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
+			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
+		},
+	},
+	{}
+
+};
+
+static bool check_mbus_joined(u8 active_pipes,
+			      const struct dbuf_slice_conf_entry *dbuf_slices)
+{
+	int i;
+
+	for (i = 0; dbuf_slices[i].active_pipes != 0; i++) {
+		if (dbuf_slices[i].active_pipes == active_pipes)
+			return dbuf_slices[i].join_mbus;
+	}
+	return false;
+}
+
+static bool adlp_check_mbus_joined(u8 active_pipes)
+{
+	return check_mbus_joined(active_pipes, adlp_allowed_dbufs);
+}
+
+static u8 compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus,
+			      const struct dbuf_slice_conf_entry *dbuf_slices)
+{
+	int i;
+
+	for (i = 0; dbuf_slices[i].active_pipes != 0; i++) {
+		if (dbuf_slices[i].active_pipes == active_pipes &&
+		    dbuf_slices[i].join_mbus == join_mbus)
+			return dbuf_slices[i].dbuf_mask[pipe];
+	}
+	return 0;
+}
+
+/*
+ * This function finds an entry with same enabled pipe configuration and
+ * returns correspondent DBuf slice mask as stated in BSpec for particular
+ * platform.
+ */
+static u8 icl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
+{
+	/*
+	 * FIXME: For ICL this is still a bit unclear as prev BSpec revision
+	 * required calculating "pipe ratio" in order to determine
+	 * if one or two slices can be used for single pipe configurations
+	 * as additional constraint to the existing table.
+	 * However based on recent info, it should be not "pipe ratio"
+	 * but rather ratio between pixel_rate and cdclk with additional
+	 * constants, so for now we are using only table until this is
+	 * clarified. Also this is the reason why crtc_state param is
+	 * still here - we will need it once those additional constraints
+	 * pop up.
+	 */
+	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
+				   icl_allowed_dbufs);
+}
+
+static u8 tgl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
+{
+	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
+				   tgl_allowed_dbufs);
+}
+
+static u8 adlp_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
+{
+	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
+				   adlp_allowed_dbufs);
+}
+
+static u8 dg2_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
+{
+	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
+				   dg2_allowed_dbufs);
+}
+
+static u8 skl_compute_dbuf_slices(struct intel_crtc *crtc, u8 active_pipes, bool join_mbus)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+
+	if (IS_DG2(i915))
+		return dg2_compute_dbuf_slices(pipe, active_pipes, join_mbus);
+	else if (DISPLAY_VER(i915) >= 13)
+		return adlp_compute_dbuf_slices(pipe, active_pipes, join_mbus);
+	else if (DISPLAY_VER(i915) == 12)
+		return tgl_compute_dbuf_slices(pipe, active_pipes, join_mbus);
+	else if (DISPLAY_VER(i915) == 11)
+		return icl_compute_dbuf_slices(pipe, active_pipes, join_mbus);
+	/*
+	 * For anything else just return one slice yet.
+	 * Should be extended for other platforms.
+	 */
+	return active_pipes & BIT(pipe) ? BIT(DBUF_S1) : 0;
+}
+
+static bool
+use_minimal_wm0_only(const struct intel_crtc_state *crtc_state,
+		     struct intel_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+
+	return DISPLAY_VER(i915) >= 13 &&
+	       crtc_state->uapi.async_flip &&
+	       plane->async_flip;
+}
+
+static u64
+skl_total_relative_data_rate(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum plane_id plane_id;
+	u64 data_rate = 0;
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		if (plane_id == PLANE_CURSOR)
+			continue;
+
+		data_rate += crtc_state->rel_data_rate[plane_id];
+
+		if (DISPLAY_VER(i915) < 11)
+			data_rate += crtc_state->rel_data_rate_y[plane_id];
+	}
+
+	return data_rate;
+}
+
+static const struct skl_wm_level *
+skl_plane_wm_level(const struct skl_pipe_wm *pipe_wm,
+		   enum plane_id plane_id,
+		   int level)
+{
+	const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
+
+	if (level == 0 && pipe_wm->use_sagv_wm)
+		return &wm->sagv.wm0;
+
+	return &wm->wm[level];
+}
+
+static const struct skl_wm_level *
+skl_plane_trans_wm(const struct skl_pipe_wm *pipe_wm,
+		   enum plane_id plane_id)
+{
+	const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
+
+	if (pipe_wm->use_sagv_wm)
+		return &wm->sagv.trans_wm;
+
+	return &wm->trans_wm;
+}
+
+/*
+ * We only disable the watermarks for each plane if
+ * they exceed the ddb allocation of said plane. This
+ * is done so that we don't end up touching cursor
+ * watermarks needlessly when some other plane reduces
+ * our max possible watermark level.
+ *
+ * Bspec has this to say about the PLANE_WM enable bit:
+ * "All the watermarks at this level for all enabled
+ *  planes must be enabled before the level will be used."
+ * So this is actually safe to do.
+ */
+static void
+skl_check_wm_level(struct skl_wm_level *wm, const struct skl_ddb_entry *ddb)
+{
+	if (wm->min_ddb_alloc > skl_ddb_entry_size(ddb))
+		memset(wm, 0, sizeof(*wm));
+}
+
+static void
+skl_check_nv12_wm_level(struct skl_wm_level *wm, struct skl_wm_level *uv_wm,
+			const struct skl_ddb_entry *ddb_y, const struct skl_ddb_entry *ddb)
+{
+	if (wm->min_ddb_alloc > skl_ddb_entry_size(ddb_y) ||
+	    uv_wm->min_ddb_alloc > skl_ddb_entry_size(ddb)) {
+		memset(wm, 0, sizeof(*wm));
+		memset(uv_wm, 0, sizeof(*uv_wm));
+	}
+}
+
+static bool icl_need_wm1_wa(struct drm_i915_private *i915,
+			    enum plane_id plane_id)
+{
+	/*
+	 * Wa_1408961008:icl, ehl
+	 * Wa_14012656716:tgl, adl
+	 * Underruns with WM1+ disabled
+	 */
+	return DISPLAY_VER(i915) == 11 ||
+	       (IS_DISPLAY_VER(i915, 12, 13) && plane_id == PLANE_CURSOR);
+}
+
+struct skl_plane_ddb_iter {
+	u64 data_rate;
+	u16 start, size;
+};
+
+static void
+skl_allocate_plane_ddb(struct skl_plane_ddb_iter *iter,
+		       struct skl_ddb_entry *ddb,
+		       const struct skl_wm_level *wm,
+		       u64 data_rate)
+{
+	u16 size, extra = 0;
+
+	if (data_rate) {
+		extra = min_t(u16, iter->size,
+			      DIV64_U64_ROUND_UP(iter->size * data_rate,
+						 iter->data_rate));
+		iter->size -= extra;
+		iter->data_rate -= data_rate;
+	}
+
+	/*
+	 * Keep ddb entry of all disabled planes explicitly zeroed
+	 * to avoid skl_ddb_add_affected_planes() adding them to
+	 * the state when other planes change their allocations.
+	 */
+	size = wm->min_ddb_alloc + extra;
+	if (size)
+		iter->start = skl_ddb_entry_init(ddb, iter->start,
+						 iter->start + size);
+}
+
+static int
+skl_crtc_allocate_plane_ddb(struct intel_atomic_state *state,
+			    struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_dbuf_state *dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+	const struct skl_ddb_entry *alloc = &dbuf_state->ddb[crtc->pipe];
+	int num_active = hweight8(dbuf_state->active_pipes);
+	struct skl_plane_ddb_iter iter;
+	enum plane_id plane_id;
+	u16 cursor_size;
+	u32 blocks;
+	int level;
+
+	/* Clear the partitioning for disabled planes. */
+	memset(crtc_state->wm.skl.plane_ddb, 0, sizeof(crtc_state->wm.skl.plane_ddb));
+	memset(crtc_state->wm.skl.plane_ddb_y, 0, sizeof(crtc_state->wm.skl.plane_ddb_y));
+
+	if (!crtc_state->hw.active)
+		return 0;
+
+	iter.start = alloc->start;
+	iter.size = skl_ddb_entry_size(alloc);
+	if (iter.size == 0)
+		return 0;
+
+	/* Allocate fixed number of blocks for cursor. */
+	cursor_size = skl_cursor_allocation(crtc_state, num_active);
+	iter.size -= cursor_size;
+	skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb[PLANE_CURSOR],
+			   alloc->end - cursor_size, alloc->end);
+
+	iter.data_rate = skl_total_relative_data_rate(crtc_state);
+
+	/*
+	 * Find the highest watermark level for which we can satisfy the block
+	 * requirement of active planes.
+	 */
+	for (level = ilk_wm_max_level(i915); level >= 0; level--) {
+		blocks = 0;
+		for_each_plane_id_on_crtc(crtc, plane_id) {
+			const struct skl_plane_wm *wm =
+				&crtc_state->wm.skl.optimal.planes[plane_id];
+
+			if (plane_id == PLANE_CURSOR) {
+				const struct skl_ddb_entry *ddb =
+					&crtc_state->wm.skl.plane_ddb[plane_id];
+
+				if (wm->wm[level].min_ddb_alloc > skl_ddb_entry_size(ddb)) {
+					drm_WARN_ON(&i915->drm,
+						    wm->wm[level].min_ddb_alloc != U16_MAX);
+					blocks = U32_MAX;
+					break;
+				}
+				continue;
+			}
+
+			blocks += wm->wm[level].min_ddb_alloc;
+			blocks += wm->uv_wm[level].min_ddb_alloc;
+		}
+
+		if (blocks <= iter.size) {
+			iter.size -= blocks;
+			break;
+		}
+	}
+
+	if (level < 0) {
+		drm_dbg_kms(&i915->drm,
+			    "Requested display configuration exceeds system DDB limitations");
+		drm_dbg_kms(&i915->drm, "minimum required %d/%d\n",
+			    blocks, iter.size);
+		return -EINVAL;
+	}
+
+	/* avoid the WARN later when we don't allocate any extra DDB */
+	if (iter.data_rate == 0)
+		iter.size = 0;
+
+	/*
+	 * Grant each plane the blocks it requires at the highest achievable
+	 * watermark level, plus an extra share of the leftover blocks
+	 * proportional to its relative data rate.
+	 */
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		struct skl_ddb_entry *ddb =
+			&crtc_state->wm.skl.plane_ddb[plane_id];
+		struct skl_ddb_entry *ddb_y =
+			&crtc_state->wm.skl.plane_ddb_y[plane_id];
+		const struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+
+		if (plane_id == PLANE_CURSOR)
+			continue;
+
+		if (DISPLAY_VER(i915) < 11 &&
+		    crtc_state->nv12_planes & BIT(plane_id)) {
+			skl_allocate_plane_ddb(&iter, ddb_y, &wm->wm[level],
+					       crtc_state->rel_data_rate_y[plane_id]);
+			skl_allocate_plane_ddb(&iter, ddb, &wm->uv_wm[level],
+					       crtc_state->rel_data_rate[plane_id]);
+		} else {
+			skl_allocate_plane_ddb(&iter, ddb, &wm->wm[level],
+					       crtc_state->rel_data_rate[plane_id]);
+		}
+	}
+	drm_WARN_ON(&i915->drm, iter.size != 0 || iter.data_rate != 0);
+
+	/*
+	 * When we calculated watermark values we didn't know how high
+	 * of a level we'd actually be able to hit, so we just marked
+	 * all levels as "enabled."  Go back now and disable the ones
+	 * that aren't actually possible.
+	 */
+	for (level++; level <= ilk_wm_max_level(i915); level++) {
+		for_each_plane_id_on_crtc(crtc, plane_id) {
+			const struct skl_ddb_entry *ddb =
+				&crtc_state->wm.skl.plane_ddb[plane_id];
+			const struct skl_ddb_entry *ddb_y =
+				&crtc_state->wm.skl.plane_ddb_y[plane_id];
+			struct skl_plane_wm *wm =
+				&crtc_state->wm.skl.optimal.planes[plane_id];
+
+			if (DISPLAY_VER(i915) < 11 &&
+			    crtc_state->nv12_planes & BIT(plane_id))
+				skl_check_nv12_wm_level(&wm->wm[level],
+							&wm->uv_wm[level],
+							ddb_y, ddb);
+			else
+				skl_check_wm_level(&wm->wm[level], ddb);
+
+			if (icl_need_wm1_wa(i915, plane_id) &&
+			    level == 1 && wm->wm[0].enable) {
+				wm->wm[level].blocks = wm->wm[0].blocks;
+				wm->wm[level].lines = wm->wm[0].lines;
+				wm->wm[level].ignore_lines = wm->wm[0].ignore_lines;
+			}
+		}
+	}
+
+	/*
+	 * Go back and disable the transition and SAGV watermarks
+	 * if it turns out we don't have enough DDB blocks for them.
+	 */
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		const struct skl_ddb_entry *ddb =
+			&crtc_state->wm.skl.plane_ddb[plane_id];
+		const struct skl_ddb_entry *ddb_y =
+			&crtc_state->wm.skl.plane_ddb_y[plane_id];
+		struct skl_plane_wm *wm =
+			&crtc_state->wm.skl.optimal.planes[plane_id];
+
+		if (DISPLAY_VER(i915) < 11 &&
+		    crtc_state->nv12_planes & BIT(plane_id)) {
+			skl_check_wm_level(&wm->trans_wm, ddb_y);
+		} else {
+			WARN_ON(skl_ddb_entry_size(ddb_y));
+
+			skl_check_wm_level(&wm->trans_wm, ddb);
+		}
+
+		skl_check_wm_level(&wm->sagv.wm0, ddb);
+		skl_check_wm_level(&wm->sagv.trans_wm, ddb);
+	}
+
+	return 0;
+}
+
+/*
+ * The max latency should be 257 (max the punit can code is 255 and we add 2us
+ * for the read latency) and cpp should always be <= 8, so that
+ * should allow pixel_rate up to ~2 GHz which seems sufficient since max
+ * 2xcdclk is 1350 MHz and the pixel rate should never exceed that.
+ */
+static uint_fixed_16_16_t
+skl_wm_method1(const struct drm_i915_private *i915, u32 pixel_rate,
+	       u8 cpp, u32 latency, u32 dbuf_block_size)
+{
+	u32 wm_intermediate_val;
+	uint_fixed_16_16_t ret;
+
+	if (latency == 0)
+		return FP_16_16_MAX;
+
+	wm_intermediate_val = latency * pixel_rate * cpp;
+	ret = div_fixed16(wm_intermediate_val, 1000 * dbuf_block_size);
+
+	if (DISPLAY_VER(i915) >= 10)
+		ret = add_fixed16_u32(ret, 1);
+
+	return ret;
+}
+
+static uint_fixed_16_16_t
+skl_wm_method2(u32 pixel_rate, u32 pipe_htotal, u32 latency,
+	       uint_fixed_16_16_t plane_blocks_per_line)
+{
+	u32 wm_intermediate_val;
+	uint_fixed_16_16_t ret;
+
+	if (latency == 0)
+		return FP_16_16_MAX;
+
+	wm_intermediate_val = latency * pixel_rate;
+	wm_intermediate_val = DIV_ROUND_UP(wm_intermediate_val,
+					   pipe_htotal * 1000);
+	ret = mul_u32_fixed16(wm_intermediate_val, plane_blocks_per_line);
+	return ret;
+}
+
+static uint_fixed_16_16_t
+intel_get_linetime_us(const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	u32 pixel_rate;
+	u32 crtc_htotal;
+	uint_fixed_16_16_t linetime_us;
+
+	if (!crtc_state->hw.active)
+		return u32_to_fixed16(0);
+
+	pixel_rate = crtc_state->pixel_rate;
+
+	if (drm_WARN_ON(&i915->drm, pixel_rate == 0))
+		return u32_to_fixed16(0);
+
+	crtc_htotal = crtc_state->hw.pipe_mode.crtc_htotal;
+	linetime_us = div_fixed16(crtc_htotal * 1000, pixel_rate);
+
+	return linetime_us;
+}
+
+static int
+skl_compute_wm_params(const struct intel_crtc_state *crtc_state,
+		      int width, const struct drm_format_info *format,
+		      u64 modifier, unsigned int rotation,
+		      u32 plane_pixel_rate, struct skl_wm_params *wp,
+		      int color_plane)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	u32 interm_pbpl;
+
+	/* only planar format has two planes */
+	if (color_plane == 1 &&
+	    !intel_format_info_is_yuv_semiplanar(format, modifier)) {
+		drm_dbg_kms(&i915->drm,
+			    "Non planar format have single plane\n");
+		return -EINVAL;
+	}
+
+	wp->y_tiled = modifier == I915_FORMAT_MOD_Y_TILED ||
+		      modifier == I915_FORMAT_MOD_4_TILED ||
+		      modifier == I915_FORMAT_MOD_Yf_TILED ||
+		      modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+		      modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
+	wp->x_tiled = modifier == I915_FORMAT_MOD_X_TILED;
+	wp->rc_surface = modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
+			 modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
+	wp->is_planar = intel_format_info_is_yuv_semiplanar(format, modifier);
+
+	wp->width = width;
+	if (color_plane == 1 && wp->is_planar)
+		wp->width /= 2;
+
+	wp->cpp = format->cpp[color_plane];
+	wp->plane_pixel_rate = plane_pixel_rate;
+
+	if (DISPLAY_VER(i915) >= 11 &&
+	    modifier == I915_FORMAT_MOD_Yf_TILED  && wp->cpp == 1)
+		wp->dbuf_block_size = 256;
+	else
+		wp->dbuf_block_size = 512;
+
+	if (drm_rotation_90_or_270(rotation)) {
+		switch (wp->cpp) {
+		case 1:
+			wp->y_min_scanlines = 16;
+			break;
+		case 2:
+			wp->y_min_scanlines = 8;
+			break;
+		case 4:
+			wp->y_min_scanlines = 4;
+			break;
+		default:
+			MISSING_CASE(wp->cpp);
+			return -EINVAL;
+		}
+	} else {
+		wp->y_min_scanlines = 4;
+	}
+
+	if (skl_needs_memory_bw_wa(i915))
+		wp->y_min_scanlines *= 2;
+
+	wp->plane_bytes_per_line = wp->width * wp->cpp;
+	if (wp->y_tiled) {
+		interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line *
+					   wp->y_min_scanlines,
+					   wp->dbuf_block_size);
+
+		if (DISPLAY_VER(i915) >= 10)
+			interm_pbpl++;
+
+		wp->plane_blocks_per_line = div_fixed16(interm_pbpl,
+							wp->y_min_scanlines);
+	} else {
+		interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line,
+					   wp->dbuf_block_size);
+
+		if (!wp->x_tiled || DISPLAY_VER(i915) >= 10)
+			interm_pbpl++;
+
+		wp->plane_blocks_per_line = u32_to_fixed16(interm_pbpl);
+	}
+
+	wp->y_tile_minimum = mul_u32_fixed16(wp->y_min_scanlines,
+					     wp->plane_blocks_per_line);
+
+	wp->linetime_us = fixed16_to_u32_round_up(intel_get_linetime_us(crtc_state));
+
+	return 0;
+}
+
+static int
+skl_compute_plane_wm_params(const struct intel_crtc_state *crtc_state,
+			    const struct intel_plane_state *plane_state,
+			    struct skl_wm_params *wp, int color_plane)
+{
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int width;
+
+	/*
+	 * Src coordinates are already rotated by 270 degrees for
+	 * the 90/270 degree plane rotation cases (to match the
+	 * GTT mapping), hence no need to account for rotation here.
+	 */
+	width = drm_rect_width(&plane_state->uapi.src) >> 16;
+
+	return skl_compute_wm_params(crtc_state, width,
+				     fb->format, fb->modifier,
+				     plane_state->hw.rotation,
+				     intel_plane_pixel_rate(crtc_state, plane_state),
+				     wp, color_plane);
+}
+
+static bool skl_wm_has_lines(struct drm_i915_private *i915, int level)
+{
+	if (DISPLAY_VER(i915) >= 10)
+		return true;
+
+	/* The number of lines are ignored for the level 0 watermark. */
+	return level > 0;
+}
+
+static int skl_wm_max_lines(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 13)
+		return 255;
+	else
+		return 31;
+}
+
+static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
+				 struct intel_plane *plane,
+				 int level,
+				 unsigned int latency,
+				 const struct skl_wm_params *wp,
+				 const struct skl_wm_level *result_prev,
+				 struct skl_wm_level *result /* out */)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	uint_fixed_16_16_t method1, method2;
+	uint_fixed_16_16_t selected_result;
+	u32 blocks, lines, min_ddb_alloc = 0;
+
+	if (latency == 0 ||
+	    (use_minimal_wm0_only(crtc_state, plane) && level > 0)) {
+		/* reject it */
+		result->min_ddb_alloc = U16_MAX;
+		return;
+	}
+
+	/*
+	 * WaIncreaseLatencyIPCEnabled: kbl,cfl
+	 * Display WA #1141: kbl,cfl
+	 */
+	if ((IS_KABYLAKE(i915) ||
+	     IS_COFFEELAKE(i915) ||
+	     IS_COMETLAKE(i915)) &&
+	    i915->ipc_enabled)
+		latency += 4;
+
+	if (skl_needs_memory_bw_wa(i915) && wp->x_tiled)
+		latency += 15;
+
+	method1 = skl_wm_method1(i915, wp->plane_pixel_rate,
+				 wp->cpp, latency, wp->dbuf_block_size);
+	method2 = skl_wm_method2(wp->plane_pixel_rate,
+				 crtc_state->hw.pipe_mode.crtc_htotal,
+				 latency,
+				 wp->plane_blocks_per_line);
+
+	if (wp->y_tiled) {
+		selected_result = max_fixed16(method2, wp->y_tile_minimum);
+	} else {
+		if ((wp->cpp * crtc_state->hw.pipe_mode.crtc_htotal /
+		     wp->dbuf_block_size < 1) &&
+		     (wp->plane_bytes_per_line / wp->dbuf_block_size < 1)) {
+			selected_result = method2;
+		} else if (latency >= wp->linetime_us) {
+			if (DISPLAY_VER(i915) == 9)
+				selected_result = min_fixed16(method1, method2);
+			else
+				selected_result = method2;
+		} else {
+			selected_result = method1;
+		}
+	}
+
+	blocks = fixed16_to_u32_round_up(selected_result) + 1;
+	/*
+	 * Lets have blocks at minimum equivalent to plane_blocks_per_line
+	 * as there will be at minimum one line for lines configuration. This
+	 * is a work around for FIFO underruns observed with resolutions like
+	 * 4k 60 Hz in single channel DRAM configurations.
+	 *
+	 * As per the Bspec 49325, if the ddb allocation can hold at least
+	 * one plane_blocks_per_line, we should have selected method2 in
+	 * the above logic. Assuming that modern versions have enough dbuf
+	 * and method2 guarantees blocks equivalent to at least 1 line,
+	 * select the blocks as plane_blocks_per_line.
+	 *
+	 * TODO: Revisit the logic when we have better understanding on DRAM
+	 * channels' impact on the level 0 memory latency and the relevant
+	 * wm calculations.
+	 */
+	if (skl_wm_has_lines(i915, level))
+		blocks = max(blocks,
+			     fixed16_to_u32_round_up(wp->plane_blocks_per_line));
+	lines = div_round_up_fixed16(selected_result,
+				     wp->plane_blocks_per_line);
+
+	if (DISPLAY_VER(i915) == 9) {
+		/* Display WA #1125: skl,bxt,kbl */
+		if (level == 0 && wp->rc_surface)
+			blocks += fixed16_to_u32_round_up(wp->y_tile_minimum);
+
+		/* Display WA #1126: skl,bxt,kbl */
+		if (level >= 1 && level <= 7) {
+			if (wp->y_tiled) {
+				blocks += fixed16_to_u32_round_up(wp->y_tile_minimum);
+				lines += wp->y_min_scanlines;
+			} else {
+				blocks++;
+			}
+
+			/*
+			 * Make sure result blocks for higher latency levels are
+			 * at least as high as level below the current level.
+			 * Assumption in DDB algorithm optimization for special
+			 * cases. Also covers Display WA #1125 for RC.
+			 */
+			if (result_prev->blocks > blocks)
+				blocks = result_prev->blocks;
+		}
+	}
+
+	if (DISPLAY_VER(i915) >= 11) {
+		if (wp->y_tiled) {
+			int extra_lines;
+
+			if (lines % wp->y_min_scanlines == 0)
+				extra_lines = wp->y_min_scanlines;
+			else
+				extra_lines = wp->y_min_scanlines * 2 -
+					lines % wp->y_min_scanlines;
+
+			min_ddb_alloc = mul_round_up_u32_fixed16(lines + extra_lines,
+								 wp->plane_blocks_per_line);
+		} else {
+			min_ddb_alloc = blocks + DIV_ROUND_UP(blocks, 10);
+		}
+	}
+
+	if (!skl_wm_has_lines(i915, level))
+		lines = 0;
+
+	if (lines > skl_wm_max_lines(i915)) {
+		/* reject it */
+		result->min_ddb_alloc = U16_MAX;
+		return;
+	}
+
+	/*
+	 * If lines is valid, assume we can use this watermark level
+	 * for now.  We'll come back and disable it after we calculate the
+	 * DDB allocation if it turns out we don't actually have enough
+	 * blocks to satisfy it.
+	 */
+	result->blocks = blocks;
+	result->lines = lines;
+	/* Bspec says: value >= plane ddb allocation -> invalid, hence the +1 here */
+	result->min_ddb_alloc = max(min_ddb_alloc, blocks) + 1;
+	result->enable = true;
+
+	if (DISPLAY_VER(i915) < 12 && i915->display.sagv.block_time_us)
+		result->can_sagv = latency >= i915->display.sagv.block_time_us;
+}
+
+static void
+skl_compute_wm_levels(const struct intel_crtc_state *crtc_state,
+		      struct intel_plane *plane,
+		      const struct skl_wm_params *wm_params,
+		      struct skl_wm_level *levels)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	int level, max_level = ilk_wm_max_level(i915);
+	struct skl_wm_level *result_prev = &levels[0];
+
+	for (level = 0; level <= max_level; level++) {
+		struct skl_wm_level *result = &levels[level];
+		unsigned int latency = i915->display.wm.skl_latency[level];
+
+		skl_compute_plane_wm(crtc_state, plane, level, latency,
+				     wm_params, result_prev, result);
+
+		result_prev = result;
+	}
+}
+
+static void tgl_compute_sagv_wm(const struct intel_crtc_state *crtc_state,
+				struct intel_plane *plane,
+				const struct skl_wm_params *wm_params,
+				struct skl_plane_wm *plane_wm)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	struct skl_wm_level *sagv_wm = &plane_wm->sagv.wm0;
+	struct skl_wm_level *levels = plane_wm->wm;
+	unsigned int latency = 0;
+
+	if (i915->display.sagv.block_time_us)
+		latency = i915->display.sagv.block_time_us + i915->display.wm.skl_latency[0];
+
+	skl_compute_plane_wm(crtc_state, plane, 0, latency,
+			     wm_params, &levels[0],
+			     sagv_wm);
+}
+
+static void skl_compute_transition_wm(struct drm_i915_private *i915,
+				      struct skl_wm_level *trans_wm,
+				      const struct skl_wm_level *wm0,
+				      const struct skl_wm_params *wp)
+{
+	u16 trans_min, trans_amount, trans_y_tile_min;
+	u16 wm0_blocks, trans_offset, blocks;
+
+	/* Transition WM don't make any sense if ipc is disabled */
+	if (!i915->ipc_enabled)
+		return;
+
+	/*
+	 * WaDisableTWM:skl,kbl,cfl,bxt
+	 * Transition WM are not recommended by HW team for GEN9
+	 */
+	if (DISPLAY_VER(i915) == 9)
+		return;
+
+	if (DISPLAY_VER(i915) >= 11)
+		trans_min = 4;
+	else
+		trans_min = 14;
+
+	/* Display WA #1140: glk,cnl */
+	if (DISPLAY_VER(i915) == 10)
+		trans_amount = 0;
+	else
+		trans_amount = 10; /* This is configurable amount */
+
+	trans_offset = trans_min + trans_amount;
+
+	/*
+	 * The spec asks for Selected Result Blocks for wm0 (the real value),
+	 * not Result Blocks (the integer value). Pay attention to the capital
+	 * letters. The value wm_l0->blocks is actually Result Blocks, but
+	 * since Result Blocks is the ceiling of Selected Result Blocks plus 1,
+	 * and since we later will have to get the ceiling of the sum in the
+	 * transition watermarks calculation, we can just pretend Selected
+	 * Result Blocks is Result Blocks minus 1 and it should work for the
+	 * current platforms.
+	 */
+	wm0_blocks = wm0->blocks - 1;
+
+	if (wp->y_tiled) {
+		trans_y_tile_min =
+			(u16)mul_round_up_u32_fixed16(2, wp->y_tile_minimum);
+		blocks = max(wm0_blocks, trans_y_tile_min) + trans_offset;
+	} else {
+		blocks = wm0_blocks + trans_offset;
+	}
+	blocks++;
+
+	/*
+	 * Just assume we can enable the transition watermark.  After
+	 * computing the DDB we'll come back and disable it if that
+	 * assumption turns out to be false.
+	 */
+	trans_wm->blocks = blocks;
+	trans_wm->min_ddb_alloc = max_t(u16, wm0->min_ddb_alloc, blocks + 1);
+	trans_wm->enable = true;
+}
+
+static int skl_build_plane_wm_single(struct intel_crtc_state *crtc_state,
+				     const struct intel_plane_state *plane_state,
+				     struct intel_plane *plane, int color_plane)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane->id];
+	struct skl_wm_params wm_params;
+	int ret;
+
+	ret = skl_compute_plane_wm_params(crtc_state, plane_state,
+					  &wm_params, color_plane);
+	if (ret)
+		return ret;
+
+	skl_compute_wm_levels(crtc_state, plane, &wm_params, wm->wm);
+
+	skl_compute_transition_wm(i915, &wm->trans_wm,
+				  &wm->wm[0], &wm_params);
+
+	if (DISPLAY_VER(i915) >= 12) {
+		tgl_compute_sagv_wm(crtc_state, plane, &wm_params, wm);
+
+		skl_compute_transition_wm(i915, &wm->sagv.trans_wm,
+					  &wm->sagv.wm0, &wm_params);
+	}
+
+	return 0;
+}
+
+static int skl_build_plane_wm_uv(struct intel_crtc_state *crtc_state,
+				 const struct intel_plane_state *plane_state,
+				 struct intel_plane *plane)
+{
+	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane->id];
+	struct skl_wm_params wm_params;
+	int ret;
+
+	wm->is_planar = true;
+
+	/* uv plane watermarks must also be validated for NV12/Planar */
+	ret = skl_compute_plane_wm_params(crtc_state, plane_state,
+					  &wm_params, 1);
+	if (ret)
+		return ret;
+
+	skl_compute_wm_levels(crtc_state, plane, &wm_params, wm->uv_wm);
+
+	return 0;
+}
+
+static int skl_build_plane_wm(struct intel_crtc_state *crtc_state,
+			      const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	enum plane_id plane_id = plane->id;
+	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id];
+	const struct drm_framebuffer *fb = plane_state->hw.fb;
+	int ret;
+
+	memset(wm, 0, sizeof(*wm));
+
+	if (!intel_wm_plane_visible(crtc_state, plane_state))
+		return 0;
+
+	ret = skl_build_plane_wm_single(crtc_state, plane_state,
+					plane, 0);
+	if (ret)
+		return ret;
+
+	if (fb->format->is_yuv && fb->format->num_planes > 1) {
+		ret = skl_build_plane_wm_uv(crtc_state, plane_state,
+					    plane);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int icl_build_plane_wm(struct intel_crtc_state *crtc_state,
+			      const struct intel_plane_state *plane_state)
+{
+	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	enum plane_id plane_id = plane->id;
+	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id];
+	int ret;
+
+	/* Watermarks calculated in master */
+	if (plane_state->planar_slave)
+		return 0;
+
+	memset(wm, 0, sizeof(*wm));
+
+	if (plane_state->planar_linked_plane) {
+		const struct drm_framebuffer *fb = plane_state->hw.fb;
+
+		drm_WARN_ON(&i915->drm,
+			    !intel_wm_plane_visible(crtc_state, plane_state));
+		drm_WARN_ON(&i915->drm, !fb->format->is_yuv ||
+			    fb->format->num_planes == 1);
+
+		ret = skl_build_plane_wm_single(crtc_state, plane_state,
+						plane_state->planar_linked_plane, 0);
+		if (ret)
+			return ret;
+
+		ret = skl_build_plane_wm_single(crtc_state, plane_state,
+						plane, 1);
+		if (ret)
+			return ret;
+	} else if (intel_wm_plane_visible(crtc_state, plane_state)) {
+		ret = skl_build_plane_wm_single(crtc_state, plane_state,
+						plane, 0);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int skl_build_pipe_wm(struct intel_atomic_state *state,
+			     struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_plane_state *plane_state;
+	struct intel_plane *plane;
+	int ret, i;
+
+	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
+		/*
+		 * FIXME should perhaps check {old,new}_plane_crtc->hw.crtc
+		 * instead but we don't populate that correctly for NV12 Y
+		 * planes so for now hack this.
+		 */
+		if (plane->pipe != crtc->pipe)
+			continue;
+
+		if (DISPLAY_VER(i915) >= 11)
+			ret = icl_build_plane_wm(crtc_state, plane_state);
+		else
+			ret = skl_build_plane_wm(crtc_state, plane_state);
+		if (ret)
+			return ret;
+	}
+
+	crtc_state->wm.skl.optimal = crtc_state->wm.skl.raw;
+
+	return 0;
+}
+
+static void skl_ddb_entry_write(struct drm_i915_private *i915,
+				i915_reg_t reg,
+				const struct skl_ddb_entry *entry)
+{
+	if (entry->end)
+		intel_de_write_fw(i915, reg,
+				  PLANE_BUF_END(entry->end - 1) |
+				  PLANE_BUF_START(entry->start));
+	else
+		intel_de_write_fw(i915, reg, 0);
+}
+
+static void skl_write_wm_level(struct drm_i915_private *i915,
+			       i915_reg_t reg,
+			       const struct skl_wm_level *level)
+{
+	u32 val = 0;
+
+	if (level->enable)
+		val |= PLANE_WM_EN;
+	if (level->ignore_lines)
+		val |= PLANE_WM_IGNORE_LINES;
+	val |= REG_FIELD_PREP(PLANE_WM_BLOCKS_MASK, level->blocks);
+	val |= REG_FIELD_PREP(PLANE_WM_LINES_MASK, level->lines);
+
+	intel_de_write_fw(i915, reg, val);
+}
+
+void skl_write_plane_wm(struct intel_plane *plane,
+			const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	int level, max_level = ilk_wm_max_level(i915);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+	const struct skl_pipe_wm *pipe_wm = &crtc_state->wm.skl.optimal;
+	const struct skl_ddb_entry *ddb =
+		&crtc_state->wm.skl.plane_ddb[plane_id];
+	const struct skl_ddb_entry *ddb_y =
+		&crtc_state->wm.skl.plane_ddb_y[plane_id];
+
+	for (level = 0; level <= max_level; level++)
+		skl_write_wm_level(i915, PLANE_WM(pipe, plane_id, level),
+				   skl_plane_wm_level(pipe_wm, plane_id, level));
+
+	skl_write_wm_level(i915, PLANE_WM_TRANS(pipe, plane_id),
+			   skl_plane_trans_wm(pipe_wm, plane_id));
+
+	if (HAS_HW_SAGV_WM(i915)) {
+		const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
+
+		skl_write_wm_level(i915, PLANE_WM_SAGV(pipe, plane_id),
+				   &wm->sagv.wm0);
+		skl_write_wm_level(i915, PLANE_WM_SAGV_TRANS(pipe, plane_id),
+				   &wm->sagv.trans_wm);
+	}
+
+	skl_ddb_entry_write(i915,
+			    PLANE_BUF_CFG(pipe, plane_id), ddb);
+
+	if (DISPLAY_VER(i915) < 11)
+		skl_ddb_entry_write(i915,
+				    PLANE_NV12_BUF_CFG(pipe, plane_id), ddb_y);
+}
+
+void skl_write_cursor_wm(struct intel_plane *plane,
+			 const struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	int level, max_level = ilk_wm_max_level(i915);
+	enum plane_id plane_id = plane->id;
+	enum pipe pipe = plane->pipe;
+	const struct skl_pipe_wm *pipe_wm = &crtc_state->wm.skl.optimal;
+	const struct skl_ddb_entry *ddb =
+		&crtc_state->wm.skl.plane_ddb[plane_id];
+
+	for (level = 0; level <= max_level; level++)
+		skl_write_wm_level(i915, CUR_WM(pipe, level),
+				   skl_plane_wm_level(pipe_wm, plane_id, level));
+
+	skl_write_wm_level(i915, CUR_WM_TRANS(pipe),
+			   skl_plane_trans_wm(pipe_wm, plane_id));
+
+	if (HAS_HW_SAGV_WM(i915)) {
+		const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
+
+		skl_write_wm_level(i915, CUR_WM_SAGV(pipe),
+				   &wm->sagv.wm0);
+		skl_write_wm_level(i915, CUR_WM_SAGV_TRANS(pipe),
+				   &wm->sagv.trans_wm);
+	}
+
+	skl_ddb_entry_write(i915, CUR_BUF_CFG(pipe), ddb);
+}
+
+static bool skl_wm_level_equals(const struct skl_wm_level *l1,
+				const struct skl_wm_level *l2)
+{
+	return l1->enable == l2->enable &&
+		l1->ignore_lines == l2->ignore_lines &&
+		l1->lines == l2->lines &&
+		l1->blocks == l2->blocks;
+}
+
+static bool skl_plane_wm_equals(struct drm_i915_private *i915,
+				const struct skl_plane_wm *wm1,
+				const struct skl_plane_wm *wm2)
+{
+	int level, max_level = ilk_wm_max_level(i915);
+
+	for (level = 0; level <= max_level; level++) {
+		/*
+		 * We don't check uv_wm as the hardware doesn't actually
+		 * use it. It only gets used for calculating the required
+		 * ddb allocation.
+		 */
+		if (!skl_wm_level_equals(&wm1->wm[level], &wm2->wm[level]))
+			return false;
+	}
+
+	return skl_wm_level_equals(&wm1->trans_wm, &wm2->trans_wm) &&
+		skl_wm_level_equals(&wm1->sagv.wm0, &wm2->sagv.wm0) &&
+		skl_wm_level_equals(&wm1->sagv.trans_wm, &wm2->sagv.trans_wm);
+}
+
+static bool skl_ddb_entries_overlap(const struct skl_ddb_entry *a,
+				    const struct skl_ddb_entry *b)
+{
+	return a->start < b->end && b->start < a->end;
+}
+
+static void skl_ddb_entry_union(struct skl_ddb_entry *a,
+				const struct skl_ddb_entry *b)
+{
+	if (a->end && b->end) {
+		a->start = min(a->start, b->start);
+		a->end = max(a->end, b->end);
+	} else if (b->end) {
+		a->start = b->start;
+		a->end = b->end;
+	}
+}
+
+bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry *ddb,
+				 const struct skl_ddb_entry *entries,
+				 int num_entries, int ignore_idx)
+{
+	int i;
+
+	for (i = 0; i < num_entries; i++) {
+		if (i != ignore_idx &&
+		    skl_ddb_entries_overlap(ddb, &entries[i]))
+			return true;
+	}
+
+	return false;
+}
+
+static int
+skl_ddb_add_affected_planes(const struct intel_crtc_state *old_crtc_state,
+			    struct intel_crtc_state *new_crtc_state)
+{
+	struct intel_atomic_state *state = to_intel_atomic_state(new_crtc_state->uapi.state);
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_plane *plane;
+
+	for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+		struct intel_plane_state *plane_state;
+		enum plane_id plane_id = plane->id;
+
+		if (skl_ddb_entry_equal(&old_crtc_state->wm.skl.plane_ddb[plane_id],
+					&new_crtc_state->wm.skl.plane_ddb[plane_id]) &&
+		    skl_ddb_entry_equal(&old_crtc_state->wm.skl.plane_ddb_y[plane_id],
+					&new_crtc_state->wm.skl.plane_ddb_y[plane_id]))
+			continue;
+
+		plane_state = intel_atomic_get_plane_state(state, plane);
+		if (IS_ERR(plane_state))
+			return PTR_ERR(plane_state);
+
+		new_crtc_state->update_planes |= BIT(plane_id);
+	}
+
+	return 0;
+}
+
+static u8 intel_dbuf_enabled_slices(const struct intel_dbuf_state *dbuf_state)
+{
+	struct drm_i915_private *i915 = to_i915(dbuf_state->base.state->base.dev);
+	u8 enabled_slices;
+	enum pipe pipe;
+
+	/*
+	 * FIXME: For now we always enable slice S1 as per
+	 * the Bspec display initialization sequence.
+	 */
+	enabled_slices = BIT(DBUF_S1);
+
+	for_each_pipe(i915, pipe)
+		enabled_slices |= dbuf_state->slices[pipe];
+
+	return enabled_slices;
+}
+
+static int
+skl_compute_ddb(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_dbuf_state *old_dbuf_state;
+	struct intel_dbuf_state *new_dbuf_state = NULL;
+	const struct intel_crtc_state *old_crtc_state;
+	struct intel_crtc_state *new_crtc_state;
+	struct intel_crtc *crtc;
+	int ret, i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		new_dbuf_state = intel_atomic_get_dbuf_state(state);
+		if (IS_ERR(new_dbuf_state))
+			return PTR_ERR(new_dbuf_state);
+
+		old_dbuf_state = intel_atomic_get_old_dbuf_state(state);
+		break;
+	}
+
+	if (!new_dbuf_state)
+		return 0;
+
+	new_dbuf_state->active_pipes =
+		intel_calc_active_pipes(state, old_dbuf_state->active_pipes);
+
+	if (old_dbuf_state->active_pipes != new_dbuf_state->active_pipes) {
+		ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
+		if (ret)
+			return ret;
+	}
+
+	if (HAS_MBUS_JOINING(i915))
+		new_dbuf_state->joined_mbus =
+			adlp_check_mbus_joined(new_dbuf_state->active_pipes);
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		enum pipe pipe = crtc->pipe;
+
+		new_dbuf_state->slices[pipe] =
+			skl_compute_dbuf_slices(crtc, new_dbuf_state->active_pipes,
+						new_dbuf_state->joined_mbus);
+
+		if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe])
+			continue;
+
+		ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
+		if (ret)
+			return ret;
+	}
+
+	new_dbuf_state->enabled_slices = intel_dbuf_enabled_slices(new_dbuf_state);
+
+	if (old_dbuf_state->enabled_slices != new_dbuf_state->enabled_slices ||
+	    old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) {
+		ret = intel_atomic_serialize_global_state(&new_dbuf_state->base);
+		if (ret)
+			return ret;
+
+		if (old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) {
+			/* TODO: Implement vblank synchronized MBUS joining changes */
+			ret = intel_modeset_all_pipes(state);
+			if (ret)
+				return ret;
+		}
+
+		drm_dbg_kms(&i915->drm,
+			    "Enabled dbuf slices 0x%x -> 0x%x (total dbuf slices 0x%x), mbus joined? %s->%s\n",
+			    old_dbuf_state->enabled_slices,
+			    new_dbuf_state->enabled_slices,
+			    INTEL_INFO(i915)->display.dbuf.slice_mask,
+			    str_yes_no(old_dbuf_state->joined_mbus),
+			    str_yes_no(new_dbuf_state->joined_mbus));
+	}
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		enum pipe pipe = crtc->pipe;
+
+		new_dbuf_state->weight[pipe] = intel_crtc_ddb_weight(new_crtc_state);
+
+		if (old_dbuf_state->weight[pipe] == new_dbuf_state->weight[pipe])
+			continue;
+
+		ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
+		if (ret)
+			return ret;
+	}
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		ret = skl_crtc_allocate_ddb(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		ret = skl_crtc_allocate_plane_ddb(state, crtc);
+		if (ret)
+			return ret;
+
+		ret = skl_ddb_add_affected_planes(old_crtc_state,
+						  new_crtc_state);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static char enast(bool enable)
+{
+	return enable ? '*' : ' ';
+}
+
+static void
+skl_print_wm_changes(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_crtc_state *old_crtc_state;
+	const struct intel_crtc_state *new_crtc_state;
+	struct intel_plane *plane;
+	struct intel_crtc *crtc;
+	int i;
+
+	if (!drm_debug_enabled(DRM_UT_KMS))
+		return;
+
+	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
+					    new_crtc_state, i) {
+		const struct skl_pipe_wm *old_pipe_wm, *new_pipe_wm;
+
+		old_pipe_wm = &old_crtc_state->wm.skl.optimal;
+		new_pipe_wm = &new_crtc_state->wm.skl.optimal;
+
+		for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+			enum plane_id plane_id = plane->id;
+			const struct skl_ddb_entry *old, *new;
+
+			old = &old_crtc_state->wm.skl.plane_ddb[plane_id];
+			new = &new_crtc_state->wm.skl.plane_ddb[plane_id];
+
+			if (skl_ddb_entry_equal(old, new))
+				continue;
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] ddb (%4d - %4d) -> (%4d - %4d), size %4d -> %4d\n",
+				    plane->base.base.id, plane->base.name,
+				    old->start, old->end, new->start, new->end,
+				    skl_ddb_entry_size(old), skl_ddb_entry_size(new));
+		}
+
+		for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+			enum plane_id plane_id = plane->id;
+			const struct skl_plane_wm *old_wm, *new_wm;
+
+			old_wm = &old_pipe_wm->planes[plane_id];
+			new_wm = &new_pipe_wm->planes[plane_id];
+
+			if (skl_plane_wm_equals(i915, old_wm, new_wm))
+				continue;
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s]   level %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm"
+				    " -> %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm\n",
+				    plane->base.base.id, plane->base.name,
+				    enast(old_wm->wm[0].enable), enast(old_wm->wm[1].enable),
+				    enast(old_wm->wm[2].enable), enast(old_wm->wm[3].enable),
+				    enast(old_wm->wm[4].enable), enast(old_wm->wm[5].enable),
+				    enast(old_wm->wm[6].enable), enast(old_wm->wm[7].enable),
+				    enast(old_wm->trans_wm.enable),
+				    enast(old_wm->sagv.wm0.enable),
+				    enast(old_wm->sagv.trans_wm.enable),
+				    enast(new_wm->wm[0].enable), enast(new_wm->wm[1].enable),
+				    enast(new_wm->wm[2].enable), enast(new_wm->wm[3].enable),
+				    enast(new_wm->wm[4].enable), enast(new_wm->wm[5].enable),
+				    enast(new_wm->wm[6].enable), enast(new_wm->wm[7].enable),
+				    enast(new_wm->trans_wm.enable),
+				    enast(new_wm->sagv.wm0.enable),
+				    enast(new_wm->sagv.trans_wm.enable));
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s]   lines %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d"
+				      " -> %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d\n",
+				    plane->base.base.id, plane->base.name,
+				    enast(old_wm->wm[0].ignore_lines), old_wm->wm[0].lines,
+				    enast(old_wm->wm[1].ignore_lines), old_wm->wm[1].lines,
+				    enast(old_wm->wm[2].ignore_lines), old_wm->wm[2].lines,
+				    enast(old_wm->wm[3].ignore_lines), old_wm->wm[3].lines,
+				    enast(old_wm->wm[4].ignore_lines), old_wm->wm[4].lines,
+				    enast(old_wm->wm[5].ignore_lines), old_wm->wm[5].lines,
+				    enast(old_wm->wm[6].ignore_lines), old_wm->wm[6].lines,
+				    enast(old_wm->wm[7].ignore_lines), old_wm->wm[7].lines,
+				    enast(old_wm->trans_wm.ignore_lines), old_wm->trans_wm.lines,
+				    enast(old_wm->sagv.wm0.ignore_lines), old_wm->sagv.wm0.lines,
+				    enast(old_wm->sagv.trans_wm.ignore_lines), old_wm->sagv.trans_wm.lines,
+				    enast(new_wm->wm[0].ignore_lines), new_wm->wm[0].lines,
+				    enast(new_wm->wm[1].ignore_lines), new_wm->wm[1].lines,
+				    enast(new_wm->wm[2].ignore_lines), new_wm->wm[2].lines,
+				    enast(new_wm->wm[3].ignore_lines), new_wm->wm[3].lines,
+				    enast(new_wm->wm[4].ignore_lines), new_wm->wm[4].lines,
+				    enast(new_wm->wm[5].ignore_lines), new_wm->wm[5].lines,
+				    enast(new_wm->wm[6].ignore_lines), new_wm->wm[6].lines,
+				    enast(new_wm->wm[7].ignore_lines), new_wm->wm[7].lines,
+				    enast(new_wm->trans_wm.ignore_lines), new_wm->trans_wm.lines,
+				    enast(new_wm->sagv.wm0.ignore_lines), new_wm->sagv.wm0.lines,
+				    enast(new_wm->sagv.trans_wm.ignore_lines), new_wm->sagv.trans_wm.lines);
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s]  blocks %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d"
+				    " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n",
+				    plane->base.base.id, plane->base.name,
+				    old_wm->wm[0].blocks, old_wm->wm[1].blocks,
+				    old_wm->wm[2].blocks, old_wm->wm[3].blocks,
+				    old_wm->wm[4].blocks, old_wm->wm[5].blocks,
+				    old_wm->wm[6].blocks, old_wm->wm[7].blocks,
+				    old_wm->trans_wm.blocks,
+				    old_wm->sagv.wm0.blocks,
+				    old_wm->sagv.trans_wm.blocks,
+				    new_wm->wm[0].blocks, new_wm->wm[1].blocks,
+				    new_wm->wm[2].blocks, new_wm->wm[3].blocks,
+				    new_wm->wm[4].blocks, new_wm->wm[5].blocks,
+				    new_wm->wm[6].blocks, new_wm->wm[7].blocks,
+				    new_wm->trans_wm.blocks,
+				    new_wm->sagv.wm0.blocks,
+				    new_wm->sagv.trans_wm.blocks);
+
+			drm_dbg_kms(&i915->drm,
+				    "[PLANE:%d:%s] min_ddb %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d"
+				    " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n",
+				    plane->base.base.id, plane->base.name,
+				    old_wm->wm[0].min_ddb_alloc, old_wm->wm[1].min_ddb_alloc,
+				    old_wm->wm[2].min_ddb_alloc, old_wm->wm[3].min_ddb_alloc,
+				    old_wm->wm[4].min_ddb_alloc, old_wm->wm[5].min_ddb_alloc,
+				    old_wm->wm[6].min_ddb_alloc, old_wm->wm[7].min_ddb_alloc,
+				    old_wm->trans_wm.min_ddb_alloc,
+				    old_wm->sagv.wm0.min_ddb_alloc,
+				    old_wm->sagv.trans_wm.min_ddb_alloc,
+				    new_wm->wm[0].min_ddb_alloc, new_wm->wm[1].min_ddb_alloc,
+				    new_wm->wm[2].min_ddb_alloc, new_wm->wm[3].min_ddb_alloc,
+				    new_wm->wm[4].min_ddb_alloc, new_wm->wm[5].min_ddb_alloc,
+				    new_wm->wm[6].min_ddb_alloc, new_wm->wm[7].min_ddb_alloc,
+				    new_wm->trans_wm.min_ddb_alloc,
+				    new_wm->sagv.wm0.min_ddb_alloc,
+				    new_wm->sagv.trans_wm.min_ddb_alloc);
+		}
+	}
+}
+
+static bool skl_plane_selected_wm_equals(struct intel_plane *plane,
+					 const struct skl_pipe_wm *old_pipe_wm,
+					 const struct skl_pipe_wm *new_pipe_wm)
+{
+	struct drm_i915_private *i915 = to_i915(plane->base.dev);
+	int level, max_level = ilk_wm_max_level(i915);
+
+	for (level = 0; level <= max_level; level++) {
+		/*
+		 * We don't check uv_wm as the hardware doesn't actually
+		 * use it. It only gets used for calculating the required
+		 * ddb allocation.
+		 */
+		if (!skl_wm_level_equals(skl_plane_wm_level(old_pipe_wm, plane->id, level),
+					 skl_plane_wm_level(new_pipe_wm, plane->id, level)))
+			return false;
+	}
+
+	if (HAS_HW_SAGV_WM(i915)) {
+		const struct skl_plane_wm *old_wm = &old_pipe_wm->planes[plane->id];
+		const struct skl_plane_wm *new_wm = &new_pipe_wm->planes[plane->id];
+
+		if (!skl_wm_level_equals(&old_wm->sagv.wm0, &new_wm->sagv.wm0) ||
+		    !skl_wm_level_equals(&old_wm->sagv.trans_wm, &new_wm->sagv.trans_wm))
+			return false;
+	}
+
+	return skl_wm_level_equals(skl_plane_trans_wm(old_pipe_wm, plane->id),
+				   skl_plane_trans_wm(new_pipe_wm, plane->id));
+}
+
+/*
+ * To make sure the cursor watermark registers are always consistent
+ * with our computed state the following scenario needs special
+ * treatment:
+ *
+ * 1. enable cursor
+ * 2. move cursor entirely offscreen
+ * 3. disable cursor
+ *
+ * Step 2. does call .disable_plane() but does not zero the watermarks
+ * (since we consider an offscreen cursor still active for the purposes
+ * of watermarks). Step 3. would not normally call .disable_plane()
+ * because the actual plane visibility isn't changing, and we don't
+ * deallocate the cursor ddb until the pipe gets disabled. So we must
+ * force step 3. to call .disable_plane() to update the watermark
+ * registers properly.
+ *
+ * Other planes do not suffer from this issues as their watermarks are
+ * calculated based on the actual plane visibility. The only time this
+ * can trigger for the other planes is during the initial readout as the
+ * default value of the watermarks registers is not zero.
+ */
+static int skl_wm_add_affected_planes(struct intel_atomic_state *state,
+				      struct intel_crtc *crtc)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
+	struct intel_crtc_state *new_crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_plane *plane;
+
+	for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+		struct intel_plane_state *plane_state;
+		enum plane_id plane_id = plane->id;
+
+		/*
+		 * Force a full wm update for every plane on modeset.
+		 * Required because the reset value of the wm registers
+		 * is non-zero, whereas we want all disabled planes to
+		 * have zero watermarks. So if we turn off the relevant
+		 * power well the hardware state will go out of sync
+		 * with the software state.
+		 */
+		if (!drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi) &&
+		    skl_plane_selected_wm_equals(plane,
+						 &old_crtc_state->wm.skl.optimal,
+						 &new_crtc_state->wm.skl.optimal))
+			continue;
+
+		plane_state = intel_atomic_get_plane_state(state, plane);
+		if (IS_ERR(plane_state))
+			return PTR_ERR(plane_state);
+
+		new_crtc_state->update_planes |= BIT(plane_id);
+	}
+
+	return 0;
+}
+
+static int
+skl_compute_wm(struct intel_atomic_state *state)
+{
+	struct intel_crtc *crtc;
+	struct intel_crtc_state *new_crtc_state;
+	int ret, i;
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		ret = skl_build_pipe_wm(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	ret = skl_compute_ddb(state);
+	if (ret)
+		return ret;
+
+	ret = intel_compute_sagv_mask(state);
+	if (ret)
+		return ret;
+
+	/*
+	 * skl_compute_ddb() will have adjusted the final watermarks
+	 * based on how much ddb is available. Now we can actually
+	 * check if the final watermarks changed.
+	 */
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		ret = skl_wm_add_affected_planes(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	skl_print_wm_changes(state);
+
+	return 0;
+}
+
+static void skl_wm_level_from_reg_val(u32 val, struct skl_wm_level *level)
+{
+	level->enable = val & PLANE_WM_EN;
+	level->ignore_lines = val & PLANE_WM_IGNORE_LINES;
+	level->blocks = REG_FIELD_GET(PLANE_WM_BLOCKS_MASK, val);
+	level->lines = REG_FIELD_GET(PLANE_WM_LINES_MASK, val);
+}
+
+static void skl_pipe_wm_get_hw_state(struct intel_crtc *crtc,
+				     struct skl_pipe_wm *out)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	int level, max_level;
+	enum plane_id plane_id;
+	u32 val;
+
+	max_level = ilk_wm_max_level(i915);
+
+	for_each_plane_id_on_crtc(crtc, plane_id) {
+		struct skl_plane_wm *wm = &out->planes[plane_id];
+
+		for (level = 0; level <= max_level; level++) {
+			if (plane_id != PLANE_CURSOR)
+				val = intel_uncore_read(&i915->uncore, PLANE_WM(pipe, plane_id, level));
+			else
+				val = intel_uncore_read(&i915->uncore, CUR_WM(pipe, level));
+
+			skl_wm_level_from_reg_val(val, &wm->wm[level]);
+		}
+
+		if (plane_id != PLANE_CURSOR)
+			val = intel_uncore_read(&i915->uncore, PLANE_WM_TRANS(pipe, plane_id));
+		else
+			val = intel_uncore_read(&i915->uncore, CUR_WM_TRANS(pipe));
+
+		skl_wm_level_from_reg_val(val, &wm->trans_wm);
+
+		if (HAS_HW_SAGV_WM(i915)) {
+			if (plane_id != PLANE_CURSOR)
+				val = intel_uncore_read(&i915->uncore,
+							PLANE_WM_SAGV(pipe, plane_id));
+			else
+				val = intel_uncore_read(&i915->uncore,
+							CUR_WM_SAGV(pipe));
+
+			skl_wm_level_from_reg_val(val, &wm->sagv.wm0);
+
+			if (plane_id != PLANE_CURSOR)
+				val = intel_uncore_read(&i915->uncore,
+							PLANE_WM_SAGV_TRANS(pipe, plane_id));
+			else
+				val = intel_uncore_read(&i915->uncore,
+							CUR_WM_SAGV_TRANS(pipe));
+
+			skl_wm_level_from_reg_val(val, &wm->sagv.trans_wm);
+		} else if (DISPLAY_VER(i915) >= 12) {
+			wm->sagv.wm0 = wm->wm[0];
+			wm->sagv.trans_wm = wm->trans_wm;
+		}
+	}
+}
+
+void skl_wm_get_hw_state(struct drm_i915_private *i915)
+{
+	struct intel_dbuf_state *dbuf_state =
+		to_intel_dbuf_state(i915->display.dbuf.obj.state);
+	struct intel_crtc *crtc;
+
+	if (HAS_MBUS_JOINING(i915))
+		dbuf_state->joined_mbus = intel_de_read(i915, MBUS_CTL) & MBUS_JOIN;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		enum pipe pipe = crtc->pipe;
+		unsigned int mbus_offset;
+		enum plane_id plane_id;
+		u8 slices;
+
+		memset(&crtc_state->wm.skl.optimal, 0,
+		       sizeof(crtc_state->wm.skl.optimal));
+		if (crtc_state->hw.active)
+			skl_pipe_wm_get_hw_state(crtc, &crtc_state->wm.skl.optimal);
+		crtc_state->wm.skl.raw = crtc_state->wm.skl.optimal;
+
+		memset(&dbuf_state->ddb[pipe], 0, sizeof(dbuf_state->ddb[pipe]));
+
+		for_each_plane_id_on_crtc(crtc, plane_id) {
+			struct skl_ddb_entry *ddb =
+				&crtc_state->wm.skl.plane_ddb[plane_id];
+			struct skl_ddb_entry *ddb_y =
+				&crtc_state->wm.skl.plane_ddb_y[plane_id];
+
+			if (!crtc_state->hw.active)
+				continue;
+
+			skl_ddb_get_hw_plane_state(i915, crtc->pipe,
+						   plane_id, ddb, ddb_y);
+
+			skl_ddb_entry_union(&dbuf_state->ddb[pipe], ddb);
+			skl_ddb_entry_union(&dbuf_state->ddb[pipe], ddb_y);
+		}
+
+		dbuf_state->weight[pipe] = intel_crtc_ddb_weight(crtc_state);
+
+		/*
+		 * Used for checking overlaps, so we need absolute
+		 * offsets instead of MBUS relative offsets.
+		 */
+		slices = skl_compute_dbuf_slices(crtc, dbuf_state->active_pipes,
+						 dbuf_state->joined_mbus);
+		mbus_offset = mbus_ddb_offset(i915, slices);
+		crtc_state->wm.skl.ddb.start = mbus_offset + dbuf_state->ddb[pipe].start;
+		crtc_state->wm.skl.ddb.end = mbus_offset + dbuf_state->ddb[pipe].end;
+
+		/* The slices actually used by the planes on the pipe */
+		dbuf_state->slices[pipe] =
+			skl_ddb_dbuf_slice_mask(i915, &crtc_state->wm.skl.ddb);
+
+		drm_dbg_kms(&i915->drm,
+			    "[CRTC:%d:%s] dbuf slices 0x%x, ddb (%d - %d), active pipes 0x%x, mbus joined: %s\n",
+			    crtc->base.base.id, crtc->base.name,
+			    dbuf_state->slices[pipe], dbuf_state->ddb[pipe].start,
+			    dbuf_state->ddb[pipe].end, dbuf_state->active_pipes,
+			    str_yes_no(dbuf_state->joined_mbus));
+	}
+
+	dbuf_state->enabled_slices = i915->display.dbuf.enabled_slices;
+}
+
+static bool skl_dbuf_is_misconfigured(struct drm_i915_private *i915)
+{
+	const struct intel_dbuf_state *dbuf_state =
+		to_intel_dbuf_state(i915->display.dbuf.obj.state);
+	struct skl_ddb_entry entries[I915_MAX_PIPES] = {};
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		entries[crtc->pipe] = crtc_state->wm.skl.ddb;
+	}
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		u8 slices;
+
+		slices = skl_compute_dbuf_slices(crtc, dbuf_state->active_pipes,
+						 dbuf_state->joined_mbus);
+		if (dbuf_state->slices[crtc->pipe] & ~slices)
+			return true;
+
+		if (skl_ddb_allocation_overlaps(&crtc_state->wm.skl.ddb, entries,
+						I915_MAX_PIPES, crtc->pipe))
+			return true;
+	}
+
+	return false;
+}
+
+void skl_wm_sanitize(struct drm_i915_private *i915)
+{
+	struct intel_crtc *crtc;
+
+	/*
+	 * On TGL/RKL (at least) the BIOS likes to assign the planes
+	 * to the wrong DBUF slices. This will cause an infinite loop
+	 * in skl_commit_modeset_enables() as it can't find a way to
+	 * transition between the old bogus DBUF layout to the new
+	 * proper DBUF layout without DBUF allocation overlaps between
+	 * the planes (which cannot be allowed or else the hardware
+	 * may hang). If we detect a bogus DBUF layout just turn off
+	 * all the planes so that skl_commit_modeset_enables() can
+	 * simply ignore them.
+	 */
+	if (!skl_dbuf_is_misconfigured(i915))
+		return;
+
+	drm_dbg_kms(&i915->drm, "BIOS has misprogrammed the DBUF, disabling all planes\n");
+
+	for_each_intel_crtc(&i915->drm, crtc) {
+		struct intel_plane *plane = to_intel_plane(crtc->base.primary);
+		const struct intel_plane_state *plane_state =
+			to_intel_plane_state(plane->base.state);
+		struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+
+		if (plane_state->uapi.visible)
+			intel_plane_disable_noatomic(crtc, plane);
+
+		drm_WARN_ON(&i915->drm, crtc_state->active_planes != 0);
+
+		memset(&crtc_state->wm.skl.ddb, 0, sizeof(crtc_state->wm.skl.ddb));
+	}
+}
+
+void intel_wm_state_verify(struct intel_crtc *crtc,
+			   struct intel_crtc_state *new_crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct skl_hw_state {
+		struct skl_ddb_entry ddb[I915_MAX_PLANES];
+		struct skl_ddb_entry ddb_y[I915_MAX_PLANES];
+		struct skl_pipe_wm wm;
+	} *hw;
+	const struct skl_pipe_wm *sw_wm = &new_crtc_state->wm.skl.optimal;
+	int level, max_level = ilk_wm_max_level(i915);
+	struct intel_plane *plane;
+	u8 hw_enabled_slices;
+
+	if (DISPLAY_VER(i915) < 9 || !new_crtc_state->hw.active)
+		return;
+
+	hw = kzalloc(sizeof(*hw), GFP_KERNEL);
+	if (!hw)
+		return;
+
+	skl_pipe_wm_get_hw_state(crtc, &hw->wm);
+
+	skl_pipe_ddb_get_hw_state(crtc, hw->ddb, hw->ddb_y);
+
+	hw_enabled_slices = intel_enabled_dbuf_slices_mask(i915);
+
+	if (DISPLAY_VER(i915) >= 11 &&
+	    hw_enabled_slices != i915->display.dbuf.enabled_slices)
+		drm_err(&i915->drm,
+			"mismatch in DBUF Slices (expected 0x%x, got 0x%x)\n",
+			i915->display.dbuf.enabled_slices,
+			hw_enabled_slices);
+
+	for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
+		const struct skl_ddb_entry *hw_ddb_entry, *sw_ddb_entry;
+		const struct skl_wm_level *hw_wm_level, *sw_wm_level;
+
+		/* Watermarks */
+		for (level = 0; level <= max_level; level++) {
+			hw_wm_level = &hw->wm.planes[plane->id].wm[level];
+			sw_wm_level = skl_plane_wm_level(sw_wm, plane->id, level);
+
+			if (skl_wm_level_equals(hw_wm_level, sw_wm_level))
+				continue;
+
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in WM%d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
+				plane->base.base.id, plane->base.name, level,
+				sw_wm_level->enable,
+				sw_wm_level->blocks,
+				sw_wm_level->lines,
+				hw_wm_level->enable,
+				hw_wm_level->blocks,
+				hw_wm_level->lines);
+		}
+
+		hw_wm_level = &hw->wm.planes[plane->id].trans_wm;
+		sw_wm_level = skl_plane_trans_wm(sw_wm, plane->id);
+
+		if (!skl_wm_level_equals(hw_wm_level, sw_wm_level)) {
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
+				plane->base.base.id, plane->base.name,
+				sw_wm_level->enable,
+				sw_wm_level->blocks,
+				sw_wm_level->lines,
+				hw_wm_level->enable,
+				hw_wm_level->blocks,
+				hw_wm_level->lines);
+		}
+
+		hw_wm_level = &hw->wm.planes[plane->id].sagv.wm0;
+		sw_wm_level = &sw_wm->planes[plane->id].sagv.wm0;
+
+		if (HAS_HW_SAGV_WM(i915) &&
+		    !skl_wm_level_equals(hw_wm_level, sw_wm_level)) {
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in SAGV WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
+				plane->base.base.id, plane->base.name,
+				sw_wm_level->enable,
+				sw_wm_level->blocks,
+				sw_wm_level->lines,
+				hw_wm_level->enable,
+				hw_wm_level->blocks,
+				hw_wm_level->lines);
+		}
+
+		hw_wm_level = &hw->wm.planes[plane->id].sagv.trans_wm;
+		sw_wm_level = &sw_wm->planes[plane->id].sagv.trans_wm;
+
+		if (HAS_HW_SAGV_WM(i915) &&
+		    !skl_wm_level_equals(hw_wm_level, sw_wm_level)) {
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in SAGV trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
+				plane->base.base.id, plane->base.name,
+				sw_wm_level->enable,
+				sw_wm_level->blocks,
+				sw_wm_level->lines,
+				hw_wm_level->enable,
+				hw_wm_level->blocks,
+				hw_wm_level->lines);
+		}
+
+		/* DDB */
+		hw_ddb_entry = &hw->ddb[PLANE_CURSOR];
+		sw_ddb_entry = &new_crtc_state->wm.skl.plane_ddb[PLANE_CURSOR];
+
+		if (!skl_ddb_entry_equal(hw_ddb_entry, sw_ddb_entry)) {
+			drm_err(&i915->drm,
+				"[PLANE:%d:%s] mismatch in DDB (expected (%u,%u), found (%u,%u))\n",
+				plane->base.base.id, plane->base.name,
+				sw_ddb_entry->start, sw_ddb_entry->end,
+				hw_ddb_entry->start, hw_ddb_entry->end);
+		}
+	}
+
+	kfree(hw);
+}
+
+void intel_enable_ipc(struct drm_i915_private *i915)
+{
+	u32 val;
+
+	if (!HAS_IPC(i915))
+		return;
+
+	val = intel_uncore_read(&i915->uncore, DISP_ARB_CTL2);
+
+	if (i915->ipc_enabled)
+		val |= DISP_IPC_ENABLE;
+	else
+		val &= ~DISP_IPC_ENABLE;
+
+	intel_uncore_write(&i915->uncore, DISP_ARB_CTL2, val);
+}
+
+static bool intel_can_enable_ipc(struct drm_i915_private *i915)
+{
+	/* Display WA #0477 WaDisableIPC: skl */
+	if (IS_SKYLAKE(i915))
+		return false;
+
+	/* Display WA #1141: SKL:all KBL:all CFL */
+	if (IS_KABYLAKE(i915) ||
+	    IS_COFFEELAKE(i915) ||
+	    IS_COMETLAKE(i915))
+		return i915->dram_info.symmetric_memory;
+
+	return true;
+}
+
+void intel_init_ipc(struct drm_i915_private *i915)
+{
+	if (!HAS_IPC(i915))
+		return;
+
+	i915->ipc_enabled = intel_can_enable_ipc(i915);
+
+	intel_enable_ipc(i915);
+}
+
+static void
+adjust_wm_latency(struct drm_i915_private *i915,
+		  u16 wm[], int max_level, int read_latency)
+{
+	bool wm_lv_0_adjust_needed = i915->dram_info.wm_lv_0_adjust_needed;
+	int i, level;
+
+	/*
+	 * If a level n (n > 1) has a 0us latency, all levels m (m >= n)
+	 * need to be disabled. We make sure to sanitize the values out
+	 * of the punit to satisfy this requirement.
+	 */
+	for (level = 1; level <= max_level; level++) {
+		if (wm[level] == 0) {
+			for (i = level + 1; i <= max_level; i++)
+				wm[i] = 0;
+
+			max_level = level - 1;
+			break;
+		}
+	}
+
+	/*
+	 * WaWmMemoryReadLatency
+	 *
+	 * punit doesn't take into account the read latency so we need
+	 * to add proper adjustement to each valid level we retrieve
+	 * from the punit when level 0 response data is 0us.
+	 */
+	if (wm[0] == 0) {
+		for (level = 0; level <= max_level; level++)
+			wm[level] += read_latency;
+	}
+
+	/*
+	 * WA Level-0 adjustment for 16GB DIMMs: SKL+
+	 * If we could not get dimm info enable this WA to prevent from
+	 * any underrun. If not able to get Dimm info assume 16GB dimm
+	 * to avoid any underrun.
+	 */
+	if (wm_lv_0_adjust_needed)
+		wm[0] += 1;
+}
+
+static void mtl_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
+{
+	struct intel_uncore *uncore = &i915->uncore;
+	int max_level = ilk_wm_max_level(i915);
+	u32 val;
+
+	val = intel_uncore_read(uncore, MTL_LATENCY_LP0_LP1);
+	wm[0] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val);
+	wm[1] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val);
+
+	val = intel_uncore_read(uncore, MTL_LATENCY_LP2_LP3);
+	wm[2] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val);
+	wm[3] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val);
+
+	val = intel_uncore_read(uncore, MTL_LATENCY_LP4_LP5);
+	wm[4] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val);
+	wm[5] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val);
+
+	adjust_wm_latency(i915, wm, max_level, 6);
+}
+
+static void skl_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
+{
+	int max_level = ilk_wm_max_level(i915);
+	int read_latency = DISPLAY_VER(i915) >= 12 ? 3 : 2;
+	int mult = IS_DG2(i915) ? 2 : 1;
+	u32 val;
+	int ret;
+
+	/* read the first set of memory latencies[0:3] */
+	val = 0; /* data0 to be programmed to 0 for first set */
+	ret = snb_pcode_read(&i915->uncore, GEN9_PCODE_READ_MEM_LATENCY, &val, NULL);
+	if (ret) {
+		drm_err(&i915->drm, "SKL Mailbox read error = %d\n", ret);
+		return;
+	}
+
+	wm[0] = (val & GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
+	wm[1] = ((val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) &
+		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
+	wm[2] = ((val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) &
+		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
+	wm[3] = ((val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) &
+		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
+
+	/* read the second set of memory latencies[4:7] */
+	val = 1; /* data0 to be programmed to 1 for second set */
+	ret = snb_pcode_read(&i915->uncore, GEN9_PCODE_READ_MEM_LATENCY, &val, NULL);
+	if (ret) {
+		drm_err(&i915->drm, "SKL Mailbox read error = %d\n", ret);
+		return;
+	}
+
+	wm[4] = (val & GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
+	wm[5] = ((val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) &
+		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
+	wm[6] = ((val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) &
+		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
+	wm[7] = ((val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) &
+		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
+
+	adjust_wm_latency(i915, wm, max_level, read_latency);
+}
+
+static void skl_setup_wm_latency(struct drm_i915_private *i915)
+{
+	if (DISPLAY_VER(i915) >= 14)
+		mtl_read_wm_latency(i915, i915->display.wm.skl_latency);
+	else
+		skl_read_wm_latency(i915, i915->display.wm.skl_latency);
+
+	intel_print_wm_latency(i915, "Gen9 Plane", i915->display.wm.skl_latency);
+}
+
+static const struct intel_wm_funcs skl_wm_funcs = {
+	.compute_global_watermarks = skl_compute_wm,
+};
+
+void skl_wm_init(struct drm_i915_private *i915)
+{
+	intel_sagv_init(i915);
+
+	skl_setup_wm_latency(i915);
+
+	i915->display.funcs.wm = &skl_wm_funcs;
+}
+
+static struct intel_global_state *intel_dbuf_duplicate_state(struct intel_global_obj *obj)
+{
+	struct intel_dbuf_state *dbuf_state;
+
+	dbuf_state = kmemdup(obj->state, sizeof(*dbuf_state), GFP_KERNEL);
+	if (!dbuf_state)
+		return NULL;
+
+	return &dbuf_state->base;
+}
+
+static void intel_dbuf_destroy_state(struct intel_global_obj *obj,
+				     struct intel_global_state *state)
+{
+	kfree(state);
+}
+
+static const struct intel_global_state_funcs intel_dbuf_funcs = {
+	.atomic_duplicate_state = intel_dbuf_duplicate_state,
+	.atomic_destroy_state = intel_dbuf_destroy_state,
+};
+
+struct intel_dbuf_state *
+intel_atomic_get_dbuf_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_global_state *dbuf_state;
+
+	dbuf_state = intel_atomic_get_global_obj_state(state, &i915->display.dbuf.obj);
+	if (IS_ERR(dbuf_state))
+		return ERR_CAST(dbuf_state);
+
+	return to_intel_dbuf_state(dbuf_state);
+}
+
+int intel_dbuf_init(struct drm_i915_private *i915)
+{
+	struct intel_dbuf_state *dbuf_state;
+
+	dbuf_state = kzalloc(sizeof(*dbuf_state), GFP_KERNEL);
+	if (!dbuf_state)
+		return -ENOMEM;
+
+	intel_atomic_global_obj_init(i915, &i915->display.dbuf.obj,
+				     &dbuf_state->base, &intel_dbuf_funcs);
+
+	return 0;
+}
+
+/*
+ * Configure MBUS_CTL and all DBUF_CTL_S of each slice to join_mbus state before
+ * update the request state of all DBUS slices.
+ */
+static void update_mbus_pre_enable(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	u32 mbus_ctl, dbuf_min_tracker_val;
+	enum dbuf_slice slice;
+	const struct intel_dbuf_state *dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+
+	if (!HAS_MBUS_JOINING(i915))
+		return;
+
+	/*
+	 * TODO: Implement vblank synchronized MBUS joining changes.
+	 * Must be properly coordinated with dbuf reprogramming.
+	 */
+	if (dbuf_state->joined_mbus) {
+		mbus_ctl = MBUS_HASHING_MODE_1x4 | MBUS_JOIN |
+			MBUS_JOIN_PIPE_SELECT_NONE;
+		dbuf_min_tracker_val = DBUF_MIN_TRACKER_STATE_SERVICE(3);
+	} else {
+		mbus_ctl = MBUS_HASHING_MODE_2x2 |
+			MBUS_JOIN_PIPE_SELECT_NONE;
+		dbuf_min_tracker_val = DBUF_MIN_TRACKER_STATE_SERVICE(1);
+	}
+
+	intel_de_rmw(i915, MBUS_CTL,
+		     MBUS_HASHING_MODE_MASK | MBUS_JOIN |
+		     MBUS_JOIN_PIPE_SELECT_MASK, mbus_ctl);
+
+	for_each_dbuf_slice(i915, slice)
+		intel_de_rmw(i915, DBUF_CTL_S(slice),
+			     DBUF_MIN_TRACKER_STATE_SERVICE_MASK,
+			     dbuf_min_tracker_val);
+}
+
+void intel_dbuf_pre_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_dbuf_state *new_dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+	const struct intel_dbuf_state *old_dbuf_state =
+		intel_atomic_get_old_dbuf_state(state);
+
+	if (!new_dbuf_state ||
+	    (new_dbuf_state->enabled_slices == old_dbuf_state->enabled_slices &&
+	     new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus))
+		return;
+
+	WARN_ON(!new_dbuf_state->base.changed);
+
+	update_mbus_pre_enable(state);
+	gen9_dbuf_slices_update(i915,
+				old_dbuf_state->enabled_slices |
+				new_dbuf_state->enabled_slices);
+}
+
+void intel_dbuf_post_plane_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_dbuf_state *new_dbuf_state =
+		intel_atomic_get_new_dbuf_state(state);
+	const struct intel_dbuf_state *old_dbuf_state =
+		intel_atomic_get_old_dbuf_state(state);
+
+	if (!new_dbuf_state ||
+	    (new_dbuf_state->enabled_slices == old_dbuf_state->enabled_slices &&
+	     new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus))
+		return;
+
+	WARN_ON(!new_dbuf_state->base.changed);
+
+	gen9_dbuf_slices_update(i915,
+				new_dbuf_state->enabled_slices);
+}
+
+void intel_mbus_dbox_update(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	const struct intel_dbuf_state *new_dbuf_state, *old_dbuf_state;
+	const struct intel_crtc_state *new_crtc_state;
+	const struct intel_crtc *crtc;
+	u32 val = 0;
+	int i;
+
+	if (DISPLAY_VER(i915) < 11)
+		return;
+
+	new_dbuf_state = intel_atomic_get_new_dbuf_state(state);
+	old_dbuf_state = intel_atomic_get_old_dbuf_state(state);
+	if (!new_dbuf_state ||
+	    (new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus &&
+	     new_dbuf_state->active_pipes == old_dbuf_state->active_pipes))
+		return;
+
+	if (DISPLAY_VER(i915) >= 12) {
+		val |= MBUS_DBOX_B2B_TRANSACTIONS_MAX(16);
+		val |= MBUS_DBOX_B2B_TRANSACTIONS_DELAY(1);
+		val |= MBUS_DBOX_REGULATE_B2B_TRANSACTIONS_EN;
+	}
+
+	/* Wa_22010947358:adl-p */
+	if (IS_ALDERLAKE_P(i915))
+		val |= new_dbuf_state->joined_mbus ? MBUS_DBOX_A_CREDIT(6) :
+						     MBUS_DBOX_A_CREDIT(4);
+	else
+		val |= MBUS_DBOX_A_CREDIT(2);
+
+	if (IS_ALDERLAKE_P(i915)) {
+		val |= MBUS_DBOX_BW_CREDIT(2);
+		val |= MBUS_DBOX_B_CREDIT(8);
+	} else if (DISPLAY_VER(i915) >= 12) {
+		val |= MBUS_DBOX_BW_CREDIT(2);
+		val |= MBUS_DBOX_B_CREDIT(12);
+	} else {
+		val |= MBUS_DBOX_BW_CREDIT(1);
+		val |= MBUS_DBOX_B_CREDIT(8);
+	}
+
+	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
+		if (!new_crtc_state->hw.active ||
+		    !intel_crtc_needs_modeset(new_crtc_state))
+			continue;
+
+		intel_de_write(i915, PIPE_MBUS_DBOX_CTL(crtc->pipe), val);
+	}
+}
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.h b/drivers/gpu/drm/i915/display/skl_watermark.h
new file mode 100644
index 000000000000..50da05932750
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/skl_watermark.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __SKL_WATERMARK_H__
+#define __SKL_WATERMARK_H__
+
+#include <linux/types.h>
+
+#include "intel_display.h"
+#include "intel_global_state.h"
+#include "intel_pm_types.h"
+
+struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_bw_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_plane;
+
+u8 intel_enabled_dbuf_slices_mask(struct drm_i915_private *i915);
+
+void intel_sagv_pre_plane_update(struct intel_atomic_state *state);
+void intel_sagv_post_plane_update(struct intel_atomic_state *state);
+bool intel_can_enable_sagv(struct drm_i915_private *i915,
+			   const struct intel_bw_state *bw_state);
+
+u32 skl_ddb_dbuf_slice_mask(struct drm_i915_private *i915,
+			    const struct skl_ddb_entry *entry);
+
+void skl_write_plane_wm(struct intel_plane *plane,
+			const struct intel_crtc_state *crtc_state);
+void skl_write_cursor_wm(struct intel_plane *plane,
+			 const struct intel_crtc_state *crtc_state);
+
+bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry *ddb,
+				 const struct skl_ddb_entry *entries,
+				 int num_entries, int ignore_idx);
+
+void skl_wm_get_hw_state(struct drm_i915_private *i915);
+void skl_wm_sanitize(struct drm_i915_private *i915);
+
+void intel_wm_state_verify(struct intel_crtc *crtc,
+			   struct intel_crtc_state *new_crtc_state);
+
+void intel_enable_ipc(struct drm_i915_private *i915);
+void intel_init_ipc(struct drm_i915_private *i915);
+
+void skl_wm_init(struct drm_i915_private *i915);
+
+struct intel_dbuf_state {
+	struct intel_global_state base;
+
+	struct skl_ddb_entry ddb[I915_MAX_PIPES];
+	unsigned int weight[I915_MAX_PIPES];
+	u8 slices[I915_MAX_PIPES];
+	u8 enabled_slices;
+	u8 active_pipes;
+	bool joined_mbus;
+};
+
+struct intel_dbuf_state *
+intel_atomic_get_dbuf_state(struct intel_atomic_state *state);
+
+#define to_intel_dbuf_state(x) container_of((x), struct intel_dbuf_state, base)
+#define intel_atomic_get_old_dbuf_state(state) \
+	to_intel_dbuf_state(intel_atomic_get_old_global_obj_state(state, &to_i915(state->base.dev)->display.dbuf.obj))
+#define intel_atomic_get_new_dbuf_state(state) \
+	to_intel_dbuf_state(intel_atomic_get_new_global_obj_state(state, &to_i915(state->base.dev)->display.dbuf.obj))
+
+int intel_dbuf_init(struct drm_i915_private *i915);
+void intel_dbuf_pre_plane_update(struct intel_atomic_state *state);
+void intel_dbuf_post_plane_update(struct intel_atomic_state *state);
+void intel_mbus_dbox_update(struct intel_atomic_state *state);
+
+#endif /* __SKL_WATERMARK_H__ */
+
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index 56a2bcddb2af..8ab908512800 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -61,6 +61,7 @@
 #include "display/intel_pps.h"
 #include "display/intel_sprite.h"
 #include "display/intel_vga.h"
+#include "display/skl_watermark.h"
 
 #include "gem/i915_gem_context.h"
 #include "gem/i915_gem_create.h"
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index bbe3ec67602d..7b454314ab85 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -25,61 +25,22 @@
  *
  */
 
-#include <linux/module.h>
-#include <linux/string_helpers.h>
-#include <linux/pm_runtime.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_blend.h>
-#include <drm/drm_fourcc.h>
-#include <drm/drm_plane_helper.h>
-
-#include "display/intel_atomic.h"
-#include "display/intel_atomic_plane.h"
-#include "display/intel_bw.h"
 #include "display/intel_de.h"
 #include "display/intel_display_trace.h"
-#include "display/intel_display_types.h"
-#include "display/intel_fb.h"
-#include "display/intel_fbc.h"
-#include "display/intel_sprite.h"
-#include "display/skl_universal_plane.h"
+#include "display/skl_watermark.h"
 
 #include "gt/intel_engine_regs.h"
 #include "gt/intel_gt_regs.h"
-#include "gt/intel_llc.h"
 
 #include "i915_drv.h"
-#include "i915_fixed.h"
-#include "i915_irq.h"
 #include "intel_mchbar_regs.h"
-#include "intel_pcode.h"
 #include "intel_pm.h"
 #include "vlv_sideband.h"
-#include "../../../platform/x86/intel_ips.h"
-
-static void skl_sagv_disable(struct drm_i915_private *dev_priv);
 
 struct drm_i915_clock_gating_funcs {
 	void (*init_clock_gating)(struct drm_i915_private *i915);
 };
 
-/* Stores plane specific WM parameters */
-struct skl_wm_params {
-	bool x_tiled, y_tiled;
-	bool rc_surface;
-	bool is_planar;
-	u32 width;
-	u8 cpp;
-	u32 plane_pixel_rate;
-	u32 y_min_scanlines;
-	u32 plane_bytes_per_line;
-	uint_fixed_16_16_t plane_blocks_per_line;
-	uint_fixed_16_16_t y_tile_minimum;
-	u32 linetime_us;
-	u32 dbuf_block_size;
-};
-
 /* used in computing the new watermarks state */
 struct intel_wm_config {
 	unsigned int num_pipes_active;
@@ -838,8 +799,8 @@ static int intel_wm_num_levels(struct drm_i915_private *dev_priv)
 	return dev_priv->display.wm.max_level + 1;
 }
 
-static bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state,
-				   const struct intel_plane_state *plane_state)
+bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state,
+			    const struct intel_plane_state *plane_state)
 {
 	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
 
@@ -2862,114 +2823,6 @@ static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv,
 	result->enable = true;
 }
 
-static void
-adjust_wm_latency(struct drm_i915_private *i915,
-		  u16 wm[], int max_level, int read_latency)
-{
-	bool wm_lv_0_adjust_needed = i915->dram_info.wm_lv_0_adjust_needed;
-	int i, level;
-
-	/*
-	 * If a level n (n > 1) has a 0us latency, all levels m (m >= n)
-	 * need to be disabled. We make sure to sanitize the values out
-	 * of the punit to satisfy this requirement.
-	 */
-	for (level = 1; level <= max_level; level++) {
-		if (wm[level] == 0) {
-			for (i = level + 1; i <= max_level; i++)
-				wm[i] = 0;
-
-			max_level = level - 1;
-			break;
-		}
-	}
-
-	/*
-	 * WaWmMemoryReadLatency
-	 *
-	 * punit doesn't take into account the read latency so we need
-	 * to add proper adjustement to each valid level we retrieve
-	 * from the punit when level 0 response data is 0us.
-	 */
-	if (wm[0] == 0) {
-		for (level = 0; level <= max_level; level++)
-			wm[level] += read_latency;
-	}
-
-	/*
-	 * WA Level-0 adjustment for 16GB DIMMs: SKL+
-	 * If we could not get dimm info enable this WA to prevent from
-	 * any underrun. If not able to get Dimm info assume 16GB dimm
-	 * to avoid any underrun.
-	 */
-	if (wm_lv_0_adjust_needed)
-		wm[0] += 1;
-}
-
-static void mtl_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
-{
-	struct intel_uncore *uncore = &i915->uncore;
-	int max_level = ilk_wm_max_level(i915);
-	u32 val;
-
-	val = intel_uncore_read(uncore, MTL_LATENCY_LP0_LP1);
-	wm[0] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val);
-	wm[1] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val);
-
-	val = intel_uncore_read(uncore, MTL_LATENCY_LP2_LP3);
-	wm[2] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val);
-	wm[3] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val);
-
-	val = intel_uncore_read(uncore, MTL_LATENCY_LP4_LP5);
-	wm[4] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val);
-	wm[5] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val);
-
-	adjust_wm_latency(i915, wm, max_level, 6);
-}
-
-static void skl_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
-{
-	int max_level = ilk_wm_max_level(i915);
-	int read_latency = DISPLAY_VER(i915) >= 12 ? 3 : 2;
-	int mult = IS_DG2(i915) ? 2 : 1;
-	u32 val;
-	int ret;
-
-	/* read the first set of memory latencies[0:3] */
-	val = 0; /* data0 to be programmed to 0 for first set */
-	ret = snb_pcode_read(&i915->uncore, GEN9_PCODE_READ_MEM_LATENCY, &val, NULL);
-	if (ret) {
-		drm_err(&i915->drm, "SKL Mailbox read error = %d\n", ret);
-		return;
-	}
-
-	wm[0] = (val & GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
-	wm[1] = ((val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) &
-		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
-	wm[2] = ((val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) &
-		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
-	wm[3] = ((val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) &
-		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
-
-	/* read the second set of memory latencies[4:7] */
-	val = 1; /* data0 to be programmed to 1 for second set */
-	ret = snb_pcode_read(&i915->uncore, GEN9_PCODE_READ_MEM_LATENCY, &val, NULL);
-	if (ret) {
-		drm_err(&i915->drm, "SKL Mailbox read error = %d\n", ret);
-		return;
-	}
-
-	wm[4] = (val & GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
-	wm[5] = ((val >> GEN9_MEM_LATENCY_LEVEL_1_5_SHIFT) &
-		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
-	wm[6] = ((val >> GEN9_MEM_LATENCY_LEVEL_2_6_SHIFT) &
-		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
-	wm[7] = ((val >> GEN9_MEM_LATENCY_LEVEL_3_7_SHIFT) &
-		 GEN9_MEM_LATENCY_LEVEL_MASK) * mult;
-
-	adjust_wm_latency(i915, wm, max_level, read_latency);
-}
-
 static void hsw_read_wm_latency(struct drm_i915_private *i915, u16 wm[])
 {
 	u64 sskpd;
@@ -3040,9 +2893,8 @@ int ilk_wm_max_level(const struct drm_i915_private *dev_priv)
 		return 2;
 }
 
-static void intel_print_wm_latency(struct drm_i915_private *dev_priv,
-				   const char *name,
-				   const u16 wm[])
+void intel_print_wm_latency(struct drm_i915_private *dev_priv,
+			    const char *name, const u16 wm[])
 {
 	int level, max_level = ilk_wm_max_level(dev_priv);
 
@@ -3164,16 +3016,6 @@ static void ilk_setup_wm_latency(struct drm_i915_private *dev_priv)
 	}
 }
 
-static void skl_setup_wm_latency(struct drm_i915_private *dev_priv)
-{
-	if (DISPLAY_VER(dev_priv) >= 14)
-		mtl_read_wm_latency(dev_priv, dev_priv->display.wm.skl_latency);
-	else
-		skl_read_wm_latency(dev_priv, dev_priv->display.wm.skl_latency);
-
-	intel_print_wm_latency(dev_priv, "Gen9 Plane", dev_priv->display.wm.skl_latency);
-}
-
 static bool ilk_validate_pipe_wm(const struct drm_i915_private *dev_priv,
 				 struct intel_pipe_wm *pipe_wm)
 {
@@ -3684,3158 +3526,200 @@ bool ilk_disable_lp_wm(struct drm_i915_private *dev_priv)
 	return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL);
 }
 
-u8 intel_enabled_dbuf_slices_mask(struct drm_i915_private *dev_priv)
+static void ilk_compute_wm_config(struct drm_i915_private *dev_priv,
+				  struct intel_wm_config *config)
 {
-	u8 enabled_slices = 0;
-	enum dbuf_slice slice;
+	struct intel_crtc *crtc;
 
-	for_each_dbuf_slice(dev_priv, slice) {
-		if (intel_uncore_read(&dev_priv->uncore,
-				      DBUF_CTL_S(slice)) & DBUF_POWER_STATE)
-			enabled_slices |= BIT(slice);
-	}
+	/* Compute the currently _active_ config */
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		const struct intel_pipe_wm *wm = &crtc->wm.active.ilk;
 
-	return enabled_slices;
-}
+		if (!wm->pipe_enabled)
+			continue;
 
-/*
- * FIXME: We still don't have the proper code detect if we need to apply the WA,
- * so assume we'll always need it in order to avoid underruns.
- */
-static bool skl_needs_memory_bw_wa(struct drm_i915_private *dev_priv)
-{
-	return DISPLAY_VER(dev_priv) == 9;
+		config->sprites_enabled |= wm->sprites_enabled;
+		config->sprites_scaled |= wm->sprites_scaled;
+		config->num_pipes_active++;
+	}
 }
 
-static bool
-intel_has_sagv(struct drm_i915_private *dev_priv)
+static void ilk_program_watermarks(struct drm_i915_private *dev_priv)
 {
-	return DISPLAY_VER(dev_priv) >= 9 && !IS_LP(dev_priv) &&
-		dev_priv->display.sagv.status != I915_SAGV_NOT_CONTROLLED;
-}
+	struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm;
+	struct ilk_wm_maximums max;
+	struct intel_wm_config config = {};
+	struct ilk_wm_values results = {};
+	enum intel_ddb_partitioning partitioning;
 
-static u32
-intel_sagv_block_time(struct drm_i915_private *dev_priv)
-{
-	if (DISPLAY_VER(dev_priv) >= 12) {
-		u32 val = 0;
-		int ret;
+	ilk_compute_wm_config(dev_priv, &config);
 
-		ret = snb_pcode_read(&dev_priv->uncore,
-				     GEN12_PCODE_READ_SAGV_BLOCK_TIME_US,
-				     &val, NULL);
-		if (ret) {
-			drm_dbg_kms(&dev_priv->drm, "Couldn't read SAGV block time!\n");
-			return 0;
-		}
+	ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_1_2, &max);
+	ilk_wm_merge(dev_priv, &config, &max, &lp_wm_1_2);
+
+	/* 5/6 split only in single pipe config on IVB+ */
+	if (DISPLAY_VER(dev_priv) >= 7 &&
+	    config.num_pipes_active == 1 && config.sprites_enabled) {
+		ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_5_6, &max);
+		ilk_wm_merge(dev_priv, &config, &max, &lp_wm_5_6);
 
-		return val;
-	} else if (DISPLAY_VER(dev_priv) == 11) {
-		return 10;
-	} else if (DISPLAY_VER(dev_priv) == 9 && !IS_LP(dev_priv)) {
-		return 30;
+		best_lp_wm = ilk_find_best_result(dev_priv, &lp_wm_1_2, &lp_wm_5_6);
 	} else {
-		return 0;
+		best_lp_wm = &lp_wm_1_2;
 	}
-}
 
-static void intel_sagv_init(struct drm_i915_private *i915)
-{
-	if (!intel_has_sagv(i915))
-		i915->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
-
-	/*
-	 * Probe to see if we have working SAGV control.
-	 * For icl+ this was already determined by intel_bw_init_hw().
-	 */
-	if (DISPLAY_VER(i915) < 11)
-		skl_sagv_disable(i915);
-
-	drm_WARN_ON(&i915->drm, i915->display.sagv.status == I915_SAGV_UNKNOWN);
-
-	i915->display.sagv.block_time_us = intel_sagv_block_time(i915);
-
-	drm_dbg_kms(&i915->drm, "SAGV supported: %s, original SAGV block time: %u us\n",
-		    str_yes_no(intel_has_sagv(i915)), i915->display.sagv.block_time_us);
+	partitioning = (best_lp_wm == &lp_wm_1_2) ?
+		       INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6;
 
-	/* avoid overflow when adding with wm0 latency/etc. */
-	if (drm_WARN(&i915->drm, i915->display.sagv.block_time_us > U16_MAX,
-		     "Excessive SAGV block time %u, ignoring\n",
-		     i915->display.sagv.block_time_us))
-		i915->display.sagv.block_time_us = 0;
+	ilk_compute_wm_results(dev_priv, best_lp_wm, partitioning, &results);
 
-	if (!intel_has_sagv(i915))
-		i915->display.sagv.block_time_us = 0;
+	ilk_write_wm_values(dev_priv, &results);
 }
 
-/*
- * SAGV dynamically adjusts the system agent voltage and clock frequencies
- * depending on power and performance requirements. The display engine access
- * to system memory is blocked during the adjustment time. Because of the
- * blocking time, having this enabled can cause full system hangs and/or pipe
- * underruns if we don't meet all of the following requirements:
- *
- *  - <= 1 pipe enabled
- *  - All planes can enable watermarks for latencies >= SAGV engine block time
- *  - We're not using an interlaced display configuration
- */
-static void skl_sagv_enable(struct drm_i915_private *dev_priv)
+static void ilk_initial_watermarks(struct intel_atomic_state *state,
+				   struct intel_crtc *crtc)
 {
-	int ret;
-
-	if (!intel_has_sagv(dev_priv))
-		return;
-
-	if (dev_priv->display.sagv.status == I915_SAGV_ENABLED)
-		return;
-
-	drm_dbg_kms(&dev_priv->drm, "Enabling SAGV\n");
-	ret = snb_pcode_write(&dev_priv->uncore, GEN9_PCODE_SAGV_CONTROL,
-			      GEN9_SAGV_ENABLE);
-
-	/* We don't need to wait for SAGV when enabling */
-
-	/*
-	 * Some skl systems, pre-release machines in particular,
-	 * don't actually have SAGV.
-	 */
-	if (IS_SKYLAKE(dev_priv) && ret == -ENXIO) {
-		drm_dbg(&dev_priv->drm, "No SAGV found on system, ignoring\n");
-		dev_priv->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
-		return;
-	} else if (ret < 0) {
-		drm_err(&dev_priv->drm, "Failed to enable SAGV\n");
-		return;
-	}
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
 
-	dev_priv->display.sagv.status = I915_SAGV_ENABLED;
+	mutex_lock(&dev_priv->display.wm.wm_mutex);
+	crtc->wm.active.ilk = crtc_state->wm.ilk.intermediate;
+	ilk_program_watermarks(dev_priv);
+	mutex_unlock(&dev_priv->display.wm.wm_mutex);
 }
 
-static void skl_sagv_disable(struct drm_i915_private *dev_priv)
+static void ilk_optimize_watermarks(struct intel_atomic_state *state,
+				    struct intel_crtc *crtc)
 {
-	int ret;
-
-	if (!intel_has_sagv(dev_priv))
-		return;
-
-	if (dev_priv->display.sagv.status == I915_SAGV_DISABLED)
-		return;
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	const struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
 
-	drm_dbg_kms(&dev_priv->drm, "Disabling SAGV\n");
-	/* bspec says to keep retrying for at least 1 ms */
-	ret = skl_pcode_request(&dev_priv->uncore, GEN9_PCODE_SAGV_CONTROL,
-				GEN9_SAGV_DISABLE,
-				GEN9_SAGV_IS_DISABLED, GEN9_SAGV_IS_DISABLED,
-				1);
-	/*
-	 * Some skl systems, pre-release machines in particular,
-	 * don't actually have SAGV.
-	 */
-	if (IS_SKYLAKE(dev_priv) && ret == -ENXIO) {
-		drm_dbg(&dev_priv->drm, "No SAGV found on system, ignoring\n");
-		dev_priv->display.sagv.status = I915_SAGV_NOT_CONTROLLED;
-		return;
-	} else if (ret < 0) {
-		drm_err(&dev_priv->drm, "Failed to disable SAGV (%d)\n", ret);
+	if (!crtc_state->wm.need_postvbl_update)
 		return;
-	}
 
-	dev_priv->display.sagv.status = I915_SAGV_DISABLED;
+	mutex_lock(&dev_priv->display.wm.wm_mutex);
+	crtc->wm.active.ilk = crtc_state->wm.ilk.optimal;
+	ilk_program_watermarks(dev_priv);
+	mutex_unlock(&dev_priv->display.wm.wm_mutex);
 }
 
-static void skl_sagv_pre_plane_update(struct intel_atomic_state *state)
+static void ilk_pipe_wm_get_hw_state(struct intel_crtc *crtc)
 {
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
-	const struct intel_bw_state *new_bw_state =
-		intel_atomic_get_new_bw_state(state);
+	struct drm_device *dev = crtc->base.dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct ilk_wm_values *hw = &dev_priv->display.wm.hw;
+	struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
+	struct intel_pipe_wm *active = &crtc_state->wm.ilk.optimal;
+	enum pipe pipe = crtc->pipe;
 
-	if (!new_bw_state)
-		return;
+	hw->wm_pipe[pipe] = intel_uncore_read(&dev_priv->uncore, WM0_PIPE_ILK(pipe));
 
-	if (!intel_can_enable_sagv(i915, new_bw_state))
-		skl_sagv_disable(i915);
-}
+	memset(active, 0, sizeof(*active));
 
-static void skl_sagv_post_plane_update(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
-	const struct intel_bw_state *new_bw_state =
-		intel_atomic_get_new_bw_state(state);
+	active->pipe_enabled = crtc->active;
 
-	if (!new_bw_state)
-		return;
+	if (active->pipe_enabled) {
+		u32 tmp = hw->wm_pipe[pipe];
 
-	if (intel_can_enable_sagv(i915, new_bw_state))
-		skl_sagv_enable(i915);
-}
+		/*
+		 * For active pipes LP0 watermark is marked as
+		 * enabled, and LP1+ watermaks as disabled since
+		 * we can't really reverse compute them in case
+		 * multiple pipes are active.
+		 */
+		active->wm[0].enable = true;
+		active->wm[0].pri_val = REG_FIELD_GET(WM0_PIPE_PRIMARY_MASK, tmp);
+		active->wm[0].spr_val = REG_FIELD_GET(WM0_PIPE_SPRITE_MASK, tmp);
+		active->wm[0].cur_val = REG_FIELD_GET(WM0_PIPE_CURSOR_MASK, tmp);
+	} else {
+		int level, max_level = ilk_wm_max_level(dev_priv);
 
-static void icl_sagv_pre_plane_update(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	const struct intel_bw_state *old_bw_state =
-		intel_atomic_get_old_bw_state(state);
-	const struct intel_bw_state *new_bw_state =
-		intel_atomic_get_new_bw_state(state);
-	u16 old_mask, new_mask;
+		/*
+		 * For inactive pipes, all watermark levels
+		 * should be marked as enabled but zeroed,
+		 * which is what we'd compute them to.
+		 */
+		for (level = 0; level <= max_level; level++)
+			active->wm[level].enable = true;
+	}
 
-	if (!new_bw_state)
-		return;
+	crtc->wm.active.ilk = *active;
+}
 
-	old_mask = old_bw_state->qgv_points_mask;
-	new_mask = old_bw_state->qgv_points_mask | new_bw_state->qgv_points_mask;
+#define _FW_WM(value, plane) \
+	(((value) & DSPFW_ ## plane ## _MASK) >> DSPFW_ ## plane ## _SHIFT)
+#define _FW_WM_VLV(value, plane) \
+	(((value) & DSPFW_ ## plane ## _MASK_VLV) >> DSPFW_ ## plane ## _SHIFT)
 
-	if (old_mask == new_mask)
-		return;
+static void g4x_read_wm_values(struct drm_i915_private *dev_priv,
+			       struct g4x_wm_values *wm)
+{
+	u32 tmp;
 
-	WARN_ON(!new_bw_state->base.changed);
+	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1);
+	wm->sr.plane = _FW_WM(tmp, SR);
+	wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB);
+	wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEB);
+	wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEA);
 
-	drm_dbg_kms(&dev_priv->drm, "Restricting QGV points: 0x%x -> 0x%x\n",
-		    old_mask, new_mask);
+	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2);
+	wm->fbc_en = tmp & DSPFW_FBC_SR_EN;
+	wm->sr.fbc = _FW_WM(tmp, FBC_SR);
+	wm->hpll.fbc = _FW_WM(tmp, FBC_HPLL_SR);
+	wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEB);
+	wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA);
+	wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEA);
 
-	/*
-	 * Restrict required qgv points before updating the configuration.
-	 * According to BSpec we can't mask and unmask qgv points at the same
-	 * time. Also masking should be done before updating the configuration
-	 * and unmasking afterwards.
-	 */
-	icl_pcode_restrict_qgv_points(dev_priv, new_mask);
+	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3);
+	wm->hpll_en = tmp & DSPFW_HPLL_SR_EN;
+	wm->sr.cursor = _FW_WM(tmp, CURSOR_SR);
+	wm->hpll.cursor = _FW_WM(tmp, HPLL_CURSOR);
+	wm->hpll.plane = _FW_WM(tmp, HPLL_SR);
 }
 
-static void icl_sagv_post_plane_update(struct intel_atomic_state *state)
+static void vlv_read_wm_values(struct drm_i915_private *dev_priv,
+			       struct vlv_wm_values *wm)
 {
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	const struct intel_bw_state *old_bw_state =
-		intel_atomic_get_old_bw_state(state);
-	const struct intel_bw_state *new_bw_state =
-		intel_atomic_get_new_bw_state(state);
-	u16 old_mask, new_mask;
-
-	if (!new_bw_state)
-		return;
+	enum pipe pipe;
+	u32 tmp;
 
-	old_mask = old_bw_state->qgv_points_mask | new_bw_state->qgv_points_mask;
-	new_mask = new_bw_state->qgv_points_mask;
+	for_each_pipe(dev_priv, pipe) {
+		tmp = intel_uncore_read(&dev_priv->uncore, VLV_DDL(pipe));
 
-	if (old_mask == new_mask)
-		return;
+		wm->ddl[pipe].plane[PLANE_PRIMARY] =
+			(tmp >> DDL_PLANE_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
+		wm->ddl[pipe].plane[PLANE_CURSOR] =
+			(tmp >> DDL_CURSOR_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
+		wm->ddl[pipe].plane[PLANE_SPRITE0] =
+			(tmp >> DDL_SPRITE_SHIFT(0)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
+		wm->ddl[pipe].plane[PLANE_SPRITE1] =
+			(tmp >> DDL_SPRITE_SHIFT(1)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
+	}
 
-	WARN_ON(!new_bw_state->base.changed);
+	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1);
+	wm->sr.plane = _FW_WM(tmp, SR);
+	wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB);
+	wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEB);
+	wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEA);
 
-	drm_dbg_kms(&dev_priv->drm, "Relaxing QGV points: 0x%x -> 0x%x\n",
-		    old_mask, new_mask);
+	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2);
+	wm->pipe[PIPE_A].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEB);
+	wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA);
+	wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEA);
 
-	/*
-	 * Allow required qgv points after updating the configuration.
-	 * According to BSpec we can't mask and unmask qgv points at the same
-	 * time. Also masking should be done before updating the configuration
-	 * and unmasking afterwards.
-	 */
-	icl_pcode_restrict_qgv_points(dev_priv, new_mask);
-}
+	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3);
+	wm->sr.cursor = _FW_WM(tmp, CURSOR_SR);
 
-void intel_sagv_pre_plane_update(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	if (IS_CHERRYVIEW(dev_priv)) {
+		tmp = intel_uncore_read(&dev_priv->uncore, DSPFW7_CHV);
+		wm->pipe[PIPE_B].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITED);
+		wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEC);
 
-	/*
-	 * Just return if we can't control SAGV or don't have it.
-	 * This is different from situation when we have SAGV but just can't
-	 * afford it due to DBuf limitation - in case if SAGV is completely
-	 * disabled in a BIOS, we are not even allowed to send a PCode request,
-	 * as it will throw an error. So have to check it here.
-	 */
-	if (!intel_has_sagv(i915))
-		return;
-
-	if (DISPLAY_VER(i915) >= 11)
-		icl_sagv_pre_plane_update(state);
-	else
-		skl_sagv_pre_plane_update(state);
-}
-
-void intel_sagv_post_plane_update(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
-
-	/*
-	 * Just return if we can't control SAGV or don't have it.
-	 * This is different from situation when we have SAGV but just can't
-	 * afford it due to DBuf limitation - in case if SAGV is completely
-	 * disabled in a BIOS, we are not even allowed to send a PCode request,
-	 * as it will throw an error. So have to check it here.
-	 */
-	if (!intel_has_sagv(i915))
-		return;
-
-	if (DISPLAY_VER(i915) >= 11)
-		icl_sagv_post_plane_update(state);
-	else
-		skl_sagv_post_plane_update(state);
-}
-
-static bool skl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum plane_id plane_id;
-	int max_level = INT_MAX;
-
-	if (!intel_has_sagv(dev_priv))
-		return false;
-
-	if (!crtc_state->hw.active)
-		return true;
-
-	if (crtc_state->hw.pipe_mode.flags & DRM_MODE_FLAG_INTERLACE)
-		return false;
-
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		const struct skl_plane_wm *wm =
-			&crtc_state->wm.skl.optimal.planes[plane_id];
-		int level;
-
-		/* Skip this plane if it's not enabled */
-		if (!wm->wm[0].enable)
-			continue;
-
-		/* Find the highest enabled wm level for this plane */
-		for (level = ilk_wm_max_level(dev_priv);
-		     !wm->wm[level].enable; --level)
-		     { }
-
-		/* Highest common enabled wm level for all planes */
-		max_level = min(level, max_level);
-	}
-
-	/* No enabled planes? */
-	if (max_level == INT_MAX)
-		return true;
-
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		const struct skl_plane_wm *wm =
-			&crtc_state->wm.skl.optimal.planes[plane_id];
-
-		/*
-		 * All enabled planes must have enabled a common wm level that
-		 * can tolerate memory latencies higher than sagv_block_time_us
-		 */
-		if (wm->wm[0].enable && !wm->wm[max_level].can_sagv)
-			return false;
-	}
-
-	return true;
-}
-
-static bool tgl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	enum plane_id plane_id;
-
-	if (!crtc_state->hw.active)
-		return true;
-
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		const struct skl_plane_wm *wm =
-			&crtc_state->wm.skl.optimal.planes[plane_id];
-
-		if (wm->wm[0].enable && !wm->sagv.wm0.enable)
-			return false;
-	}
-
-	return true;
-}
-
-static bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-
-	if (DISPLAY_VER(dev_priv) >= 12)
-		return tgl_crtc_can_enable_sagv(crtc_state);
-	else
-		return skl_crtc_can_enable_sagv(crtc_state);
-}
-
-bool intel_can_enable_sagv(struct drm_i915_private *dev_priv,
-			   const struct intel_bw_state *bw_state)
-{
-	if (DISPLAY_VER(dev_priv) < 11 &&
-	    bw_state->active_pipes && !is_power_of_2(bw_state->active_pipes))
-		return false;
-
-	return bw_state->pipe_sagv_reject == 0;
-}
-
-static int intel_compute_sagv_mask(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	int ret;
-	struct intel_crtc *crtc;
-	struct intel_crtc_state *new_crtc_state;
-	struct intel_bw_state *new_bw_state = NULL;
-	const struct intel_bw_state *old_bw_state = NULL;
-	int i;
-
-	for_each_new_intel_crtc_in_state(state, crtc,
-					 new_crtc_state, i) {
-		new_bw_state = intel_atomic_get_bw_state(state);
-		if (IS_ERR(new_bw_state))
-			return PTR_ERR(new_bw_state);
-
-		old_bw_state = intel_atomic_get_old_bw_state(state);
-
-		if (intel_crtc_can_enable_sagv(new_crtc_state))
-			new_bw_state->pipe_sagv_reject &= ~BIT(crtc->pipe);
-		else
-			new_bw_state->pipe_sagv_reject |= BIT(crtc->pipe);
-	}
-
-	if (!new_bw_state)
-		return 0;
-
-	new_bw_state->active_pipes =
-		intel_calc_active_pipes(state, old_bw_state->active_pipes);
-
-	if (new_bw_state->active_pipes != old_bw_state->active_pipes) {
-		ret = intel_atomic_lock_global_state(&new_bw_state->base);
-		if (ret)
-			return ret;
-	}
-
-	if (intel_can_enable_sagv(dev_priv, new_bw_state) !=
-	    intel_can_enable_sagv(dev_priv, old_bw_state)) {
-		ret = intel_atomic_serialize_global_state(&new_bw_state->base);
-		if (ret)
-			return ret;
-	} else if (new_bw_state->pipe_sagv_reject != old_bw_state->pipe_sagv_reject) {
-		ret = intel_atomic_lock_global_state(&new_bw_state->base);
-		if (ret)
-			return ret;
-	}
-
-	for_each_new_intel_crtc_in_state(state, crtc,
-					 new_crtc_state, i) {
-		struct skl_pipe_wm *pipe_wm = &new_crtc_state->wm.skl.optimal;
-
-		/*
-		 * We store use_sagv_wm in the crtc state rather than relying on
-		 * that bw state since we have no convenient way to get at the
-		 * latter from the plane commit hooks (especially in the legacy
-		 * cursor case)
-		 */
-		pipe_wm->use_sagv_wm = !HAS_HW_SAGV_WM(dev_priv) &&
-			DISPLAY_VER(dev_priv) >= 12 &&
-			intel_can_enable_sagv(dev_priv, new_bw_state);
-	}
-
-	return 0;
-}
-
-static u16 skl_ddb_entry_init(struct skl_ddb_entry *entry,
-			      u16 start, u16 end)
-{
-	entry->start = start;
-	entry->end = end;
-
-	return end;
-}
-
-static int intel_dbuf_slice_size(struct drm_i915_private *dev_priv)
-{
-	return INTEL_INFO(dev_priv)->display.dbuf.size /
-		hweight8(INTEL_INFO(dev_priv)->display.dbuf.slice_mask);
-}
-
-static void
-skl_ddb_entry_for_slices(struct drm_i915_private *dev_priv, u8 slice_mask,
-			 struct skl_ddb_entry *ddb)
-{
-	int slice_size = intel_dbuf_slice_size(dev_priv);
-
-	if (!slice_mask) {
-		ddb->start = 0;
-		ddb->end = 0;
-		return;
-	}
-
-	ddb->start = (ffs(slice_mask) - 1) * slice_size;
-	ddb->end = fls(slice_mask) * slice_size;
-
-	WARN_ON(ddb->start >= ddb->end);
-	WARN_ON(ddb->end > INTEL_INFO(dev_priv)->display.dbuf.size);
-}
-
-static unsigned int mbus_ddb_offset(struct drm_i915_private *i915, u8 slice_mask)
-{
-	struct skl_ddb_entry ddb;
-
-	if (slice_mask & (BIT(DBUF_S1) | BIT(DBUF_S2)))
-		slice_mask = BIT(DBUF_S1);
-	else if (slice_mask & (BIT(DBUF_S3) | BIT(DBUF_S4)))
-		slice_mask = BIT(DBUF_S3);
-
-	skl_ddb_entry_for_slices(i915, slice_mask, &ddb);
-
-	return ddb.start;
-}
-
-u32 skl_ddb_dbuf_slice_mask(struct drm_i915_private *dev_priv,
-			    const struct skl_ddb_entry *entry)
-{
-	int slice_size = intel_dbuf_slice_size(dev_priv);
-	enum dbuf_slice start_slice, end_slice;
-	u8 slice_mask = 0;
-
-	if (!skl_ddb_entry_size(entry))
-		return 0;
-
-	start_slice = entry->start / slice_size;
-	end_slice = (entry->end - 1) / slice_size;
-
-	/*
-	 * Per plane DDB entry can in a really worst case be on multiple slices
-	 * but single entry is anyway contigious.
-	 */
-	while (start_slice <= end_slice) {
-		slice_mask |= BIT(start_slice);
-		start_slice++;
-	}
-
-	return slice_mask;
-}
-
-static unsigned int intel_crtc_ddb_weight(const struct intel_crtc_state *crtc_state)
-{
-	const struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode;
-	int hdisplay, vdisplay;
-
-	if (!crtc_state->hw.active)
-		return 0;
-
-	/*
-	 * Watermark/ddb requirement highly depends upon width of the
-	 * framebuffer, So instead of allocating DDB equally among pipes
-	 * distribute DDB based on resolution/width of the display.
-	 */
-	drm_mode_get_hv_timing(pipe_mode, &hdisplay, &vdisplay);
-
-	return hdisplay;
-}
-
-static void intel_crtc_dbuf_weights(const struct intel_dbuf_state *dbuf_state,
-				    enum pipe for_pipe,
-				    unsigned int *weight_start,
-				    unsigned int *weight_end,
-				    unsigned int *weight_total)
-{
-	struct drm_i915_private *dev_priv =
-		to_i915(dbuf_state->base.state->base.dev);
-	enum pipe pipe;
-
-	*weight_start = 0;
-	*weight_end = 0;
-	*weight_total = 0;
-
-	for_each_pipe(dev_priv, pipe) {
-		int weight = dbuf_state->weight[pipe];
-
-		/*
-		 * Do not account pipes using other slice sets
-		 * luckily as of current BSpec slice sets do not partially
-		 * intersect(pipes share either same one slice or same slice set
-		 * i.e no partial intersection), so it is enough to check for
-		 * equality for now.
-		 */
-		if (dbuf_state->slices[pipe] != dbuf_state->slices[for_pipe])
-			continue;
-
-		*weight_total += weight;
-		if (pipe < for_pipe) {
-			*weight_start += weight;
-			*weight_end += weight;
-		} else if (pipe == for_pipe) {
-			*weight_end += weight;
-		}
-	}
-}
-
-static int
-skl_crtc_allocate_ddb(struct intel_atomic_state *state, struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	unsigned int weight_total, weight_start, weight_end;
-	const struct intel_dbuf_state *old_dbuf_state =
-		intel_atomic_get_old_dbuf_state(state);
-	struct intel_dbuf_state *new_dbuf_state =
-		intel_atomic_get_new_dbuf_state(state);
-	struct intel_crtc_state *crtc_state;
-	struct skl_ddb_entry ddb_slices;
-	enum pipe pipe = crtc->pipe;
-	unsigned int mbus_offset = 0;
-	u32 ddb_range_size;
-	u32 dbuf_slice_mask;
-	u32 start, end;
-	int ret;
-
-	if (new_dbuf_state->weight[pipe] == 0) {
-		skl_ddb_entry_init(&new_dbuf_state->ddb[pipe], 0, 0);
-		goto out;
-	}
-
-	dbuf_slice_mask = new_dbuf_state->slices[pipe];
-
-	skl_ddb_entry_for_slices(dev_priv, dbuf_slice_mask, &ddb_slices);
-	mbus_offset = mbus_ddb_offset(dev_priv, dbuf_slice_mask);
-	ddb_range_size = skl_ddb_entry_size(&ddb_slices);
-
-	intel_crtc_dbuf_weights(new_dbuf_state, pipe,
-				&weight_start, &weight_end, &weight_total);
-
-	start = ddb_range_size * weight_start / weight_total;
-	end = ddb_range_size * weight_end / weight_total;
-
-	skl_ddb_entry_init(&new_dbuf_state->ddb[pipe],
-			   ddb_slices.start - mbus_offset + start,
-			   ddb_slices.start - mbus_offset + end);
-
-out:
-	if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe] &&
-	    skl_ddb_entry_equal(&old_dbuf_state->ddb[pipe],
-				&new_dbuf_state->ddb[pipe]))
-		return 0;
-
-	ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
-	if (ret)
-		return ret;
-
-	crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
-	if (IS_ERR(crtc_state))
-		return PTR_ERR(crtc_state);
-
-	/*
-	 * Used for checking overlaps, so we need absolute
-	 * offsets instead of MBUS relative offsets.
-	 */
-	crtc_state->wm.skl.ddb.start = mbus_offset + new_dbuf_state->ddb[pipe].start;
-	crtc_state->wm.skl.ddb.end = mbus_offset + new_dbuf_state->ddb[pipe].end;
-
-	drm_dbg_kms(&dev_priv->drm,
-		    "[CRTC:%d:%s] dbuf slices 0x%x -> 0x%x, ddb (%d - %d) -> (%d - %d), active pipes 0x%x -> 0x%x\n",
-		    crtc->base.base.id, crtc->base.name,
-		    old_dbuf_state->slices[pipe], new_dbuf_state->slices[pipe],
-		    old_dbuf_state->ddb[pipe].start, old_dbuf_state->ddb[pipe].end,
-		    new_dbuf_state->ddb[pipe].start, new_dbuf_state->ddb[pipe].end,
-		    old_dbuf_state->active_pipes, new_dbuf_state->active_pipes);
-
-	return 0;
-}
-
-static int skl_compute_wm_params(const struct intel_crtc_state *crtc_state,
-				 int width, const struct drm_format_info *format,
-				 u64 modifier, unsigned int rotation,
-				 u32 plane_pixel_rate, struct skl_wm_params *wp,
-				 int color_plane);
-
-static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
-				 struct intel_plane *plane,
-				 int level,
-				 unsigned int latency,
-				 const struct skl_wm_params *wp,
-				 const struct skl_wm_level *result_prev,
-				 struct skl_wm_level *result /* out */);
-
-static unsigned int
-skl_cursor_allocation(const struct intel_crtc_state *crtc_state,
-		      int num_active)
-{
-	struct intel_plane *plane = to_intel_plane(crtc_state->uapi.crtc->cursor);
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	int level, max_level = ilk_wm_max_level(dev_priv);
-	struct skl_wm_level wm = {};
-	int ret, min_ddb_alloc = 0;
-	struct skl_wm_params wp;
-
-	ret = skl_compute_wm_params(crtc_state, 256,
-				    drm_format_info(DRM_FORMAT_ARGB8888),
-				    DRM_FORMAT_MOD_LINEAR,
-				    DRM_MODE_ROTATE_0,
-				    crtc_state->pixel_rate, &wp, 0);
-	drm_WARN_ON(&dev_priv->drm, ret);
-
-	for (level = 0; level <= max_level; level++) {
-		unsigned int latency = dev_priv->display.wm.skl_latency[level];
-
-		skl_compute_plane_wm(crtc_state, plane, level, latency, &wp, &wm, &wm);
-		if (wm.min_ddb_alloc == U16_MAX)
-			break;
-
-		min_ddb_alloc = wm.min_ddb_alloc;
-	}
-
-	return max(num_active == 1 ? 32 : 8, min_ddb_alloc);
-}
-
-static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg)
-{
-	skl_ddb_entry_init(entry,
-			   REG_FIELD_GET(PLANE_BUF_START_MASK, reg),
-			   REG_FIELD_GET(PLANE_BUF_END_MASK, reg));
-	if (entry->end)
-		entry->end++;
-}
-
-static void
-skl_ddb_get_hw_plane_state(struct drm_i915_private *dev_priv,
-			   const enum pipe pipe,
-			   const enum plane_id plane_id,
-			   struct skl_ddb_entry *ddb,
-			   struct skl_ddb_entry *ddb_y)
-{
-	u32 val;
-
-	/* Cursor doesn't support NV12/planar, so no extra calculation needed */
-	if (plane_id == PLANE_CURSOR) {
-		val = intel_uncore_read(&dev_priv->uncore, CUR_BUF_CFG(pipe));
-		skl_ddb_entry_init_from_hw(ddb, val);
-		return;
-	}
-
-	val = intel_uncore_read(&dev_priv->uncore, PLANE_BUF_CFG(pipe, plane_id));
-	skl_ddb_entry_init_from_hw(ddb, val);
-
-	if (DISPLAY_VER(dev_priv) >= 11)
-		return;
-
-	val = intel_uncore_read(&dev_priv->uncore, PLANE_NV12_BUF_CFG(pipe, plane_id));
-	skl_ddb_entry_init_from_hw(ddb_y, val);
-}
-
-static void skl_pipe_ddb_get_hw_state(struct intel_crtc *crtc,
-				      struct skl_ddb_entry *ddb,
-				      struct skl_ddb_entry *ddb_y)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum intel_display_power_domain power_domain;
-	enum pipe pipe = crtc->pipe;
-	intel_wakeref_t wakeref;
-	enum plane_id plane_id;
-
-	power_domain = POWER_DOMAIN_PIPE(pipe);
-	wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
-	if (!wakeref)
-		return;
-
-	for_each_plane_id_on_crtc(crtc, plane_id)
-		skl_ddb_get_hw_plane_state(dev_priv, pipe,
-					   plane_id,
-					   &ddb[plane_id],
-					   &ddb_y[plane_id]);
-
-	intel_display_power_put(dev_priv, power_domain, wakeref);
-}
-
-struct dbuf_slice_conf_entry {
-	u8 active_pipes;
-	u8 dbuf_mask[I915_MAX_PIPES];
-	bool join_mbus;
-};
-
-/*
- * Table taken from Bspec 12716
- * Pipes do have some preferred DBuf slice affinity,
- * plus there are some hardcoded requirements on how
- * those should be distributed for multipipe scenarios.
- * For more DBuf slices algorithm can get even more messy
- * and less readable, so decided to use a table almost
- * as is from BSpec itself - that way it is at least easier
- * to compare, change and check.
- */
-static const struct dbuf_slice_conf_entry icl_allowed_dbufs[] =
-/* Autogenerated with igt/tools/intel_dbuf_map tool: */
-{
-	{
-		.active_pipes = BIT(PIPE_A),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_B] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_C] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_C] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1),
-			[PIPE_C] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_B] = BIT(DBUF_S1),
-			[PIPE_C] = BIT(DBUF_S2),
-		},
-	},
-	{}
-};
-
-/*
- * Table taken from Bspec 49255
- * Pipes do have some preferred DBuf slice affinity,
- * plus there are some hardcoded requirements on how
- * those should be distributed for multipipe scenarios.
- * For more DBuf slices algorithm can get even more messy
- * and less readable, so decided to use a table almost
- * as is from BSpec itself - that way it is at least easier
- * to compare, change and check.
- */
-static const struct dbuf_slice_conf_entry tgl_allowed_dbufs[] =
-/* Autogenerated with igt/tools/intel_dbuf_map tool: */
-{
-	{
-		.active_pipes = BIT(PIPE_A),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S2),
-			[PIPE_B] = BIT(DBUF_S1),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_C] = BIT(DBUF_S2) | BIT(DBUF_S1),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_C] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1),
-			[PIPE_C] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_B] = BIT(DBUF_S1),
-			[PIPE_C] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_D] = BIT(DBUF_S2) | BIT(DBUF_S1),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_D] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1),
-			[PIPE_D] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_B] = BIT(DBUF_S1),
-			[PIPE_D] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_C] = BIT(DBUF_S1),
-			[PIPE_D] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_C] = BIT(DBUF_S2),
-			[PIPE_D] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1),
-			[PIPE_C] = BIT(DBUF_S2),
-			[PIPE_D] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_B] = BIT(DBUF_S1),
-			[PIPE_C] = BIT(DBUF_S2),
-			[PIPE_D] = BIT(DBUF_S2),
-		},
-	},
-	{}
-};
-
-static const struct dbuf_slice_conf_entry dg2_allowed_dbufs[] = {
-	{
-		.active_pipes = BIT(PIPE_A),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_B] = BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_B] = BIT(DBUF_S2),
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_B] = BIT(DBUF_S2),
-			[PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_C] = BIT(DBUF_S3),
-			[PIPE_D] = BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_C] = BIT(DBUF_S3),
-			[PIPE_D] = BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_C] = BIT(DBUF_S3),
-			[PIPE_D] = BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1),
-			[PIPE_B] = BIT(DBUF_S2),
-			[PIPE_C] = BIT(DBUF_S3),
-			[PIPE_D] = BIT(DBUF_S4),
-		},
-	},
-	{}
-};
-
-static const struct dbuf_slice_conf_entry adlp_allowed_dbufs[] = {
-	/*
-	 * Keep the join_mbus cases first so check_mbus_joined()
-	 * will prefer them over the !join_mbus cases.
-	 */
-	{
-		.active_pipes = BIT(PIPE_A),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-		.join_mbus = true,
-	},
-	{
-		.active_pipes = BIT(PIPE_B),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-		.join_mbus = true,
-	},
-	{
-		.active_pipes = BIT(PIPE_A),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-		.join_mbus = false,
-	},
-	{
-		.active_pipes = BIT(PIPE_B),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-		.join_mbus = false,
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{
-		.active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D),
-		.dbuf_mask = {
-			[PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2),
-			[PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4),
-			[PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2),
-		},
-	},
-	{}
-
-};
-
-static bool check_mbus_joined(u8 active_pipes,
-			      const struct dbuf_slice_conf_entry *dbuf_slices)
-{
-	int i;
-
-	for (i = 0; dbuf_slices[i].active_pipes != 0; i++) {
-		if (dbuf_slices[i].active_pipes == active_pipes)
-			return dbuf_slices[i].join_mbus;
-	}
-	return false;
-}
-
-static bool adlp_check_mbus_joined(u8 active_pipes)
-{
-	return check_mbus_joined(active_pipes, adlp_allowed_dbufs);
-}
-
-static u8 compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus,
-			      const struct dbuf_slice_conf_entry *dbuf_slices)
-{
-	int i;
-
-	for (i = 0; dbuf_slices[i].active_pipes != 0; i++) {
-		if (dbuf_slices[i].active_pipes == active_pipes &&
-		    dbuf_slices[i].join_mbus == join_mbus)
-			return dbuf_slices[i].dbuf_mask[pipe];
-	}
-	return 0;
-}
-
-/*
- * This function finds an entry with same enabled pipe configuration and
- * returns correspondent DBuf slice mask as stated in BSpec for particular
- * platform.
- */
-static u8 icl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
-{
-	/*
-	 * FIXME: For ICL this is still a bit unclear as prev BSpec revision
-	 * required calculating "pipe ratio" in order to determine
-	 * if one or two slices can be used for single pipe configurations
-	 * as additional constraint to the existing table.
-	 * However based on recent info, it should be not "pipe ratio"
-	 * but rather ratio between pixel_rate and cdclk with additional
-	 * constants, so for now we are using only table until this is
-	 * clarified. Also this is the reason why crtc_state param is
-	 * still here - we will need it once those additional constraints
-	 * pop up.
-	 */
-	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
-				   icl_allowed_dbufs);
-}
-
-static u8 tgl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
-{
-	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
-				   tgl_allowed_dbufs);
-}
-
-static u8 adlp_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
-{
-	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
-				   adlp_allowed_dbufs);
-}
-
-static u8 dg2_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus)
-{
-	return compute_dbuf_slices(pipe, active_pipes, join_mbus,
-				   dg2_allowed_dbufs);
-}
-
-static u8 skl_compute_dbuf_slices(struct intel_crtc *crtc, u8 active_pipes, bool join_mbus)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum pipe pipe = crtc->pipe;
-
-	if (IS_DG2(dev_priv))
-		return dg2_compute_dbuf_slices(pipe, active_pipes, join_mbus);
-	else if (DISPLAY_VER(dev_priv) >= 13)
-		return adlp_compute_dbuf_slices(pipe, active_pipes, join_mbus);
-	else if (DISPLAY_VER(dev_priv) == 12)
-		return tgl_compute_dbuf_slices(pipe, active_pipes, join_mbus);
-	else if (DISPLAY_VER(dev_priv) == 11)
-		return icl_compute_dbuf_slices(pipe, active_pipes, join_mbus);
-	/*
-	 * For anything else just return one slice yet.
-	 * Should be extended for other platforms.
-	 */
-	return active_pipes & BIT(pipe) ? BIT(DBUF_S1) : 0;
-}
-
-static bool
-use_minimal_wm0_only(const struct intel_crtc_state *crtc_state,
-		     struct intel_plane *plane)
-{
-	struct drm_i915_private *i915 = to_i915(plane->base.dev);
-
-	return DISPLAY_VER(i915) >= 13 &&
-	       crtc_state->uapi.async_flip &&
-	       plane->async_flip;
-}
-
-static u64
-skl_total_relative_data_rate(const struct intel_crtc_state *crtc_state)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
-	enum plane_id plane_id;
-	u64 data_rate = 0;
-
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		if (plane_id == PLANE_CURSOR)
-			continue;
-
-		data_rate += crtc_state->rel_data_rate[plane_id];
-
-		if (DISPLAY_VER(i915) < 11)
-			data_rate += crtc_state->rel_data_rate_y[plane_id];
-	}
-
-	return data_rate;
-}
-
-static const struct skl_wm_level *
-skl_plane_wm_level(const struct skl_pipe_wm *pipe_wm,
-		   enum plane_id plane_id,
-		   int level)
-{
-	const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
-
-	if (level == 0 && pipe_wm->use_sagv_wm)
-		return &wm->sagv.wm0;
-
-	return &wm->wm[level];
-}
-
-static const struct skl_wm_level *
-skl_plane_trans_wm(const struct skl_pipe_wm *pipe_wm,
-		   enum plane_id plane_id)
-{
-	const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
-
-	if (pipe_wm->use_sagv_wm)
-		return &wm->sagv.trans_wm;
-
-	return &wm->trans_wm;
-}
-
-/*
- * We only disable the watermarks for each plane if
- * they exceed the ddb allocation of said plane. This
- * is done so that we don't end up touching cursor
- * watermarks needlessly when some other plane reduces
- * our max possible watermark level.
- *
- * Bspec has this to say about the PLANE_WM enable bit:
- * "All the watermarks at this level for all enabled
- *  planes must be enabled before the level will be used."
- * So this is actually safe to do.
- */
-static void
-skl_check_wm_level(struct skl_wm_level *wm, const struct skl_ddb_entry *ddb)
-{
-	if (wm->min_ddb_alloc > skl_ddb_entry_size(ddb))
-		memset(wm, 0, sizeof(*wm));
-}
-
-static void
-skl_check_nv12_wm_level(struct skl_wm_level *wm, struct skl_wm_level *uv_wm,
-			const struct skl_ddb_entry *ddb_y, const struct skl_ddb_entry *ddb)
-{
-	if (wm->min_ddb_alloc > skl_ddb_entry_size(ddb_y) ||
-	    uv_wm->min_ddb_alloc > skl_ddb_entry_size(ddb)) {
-		memset(wm, 0, sizeof(*wm));
-		memset(uv_wm, 0, sizeof(*uv_wm));
-	}
-}
-
-static bool icl_need_wm1_wa(struct drm_i915_private *i915,
-			    enum plane_id plane_id)
-{
-	/*
-	 * Wa_1408961008:icl, ehl
-	 * Wa_14012656716:tgl, adl
-	 * Underruns with WM1+ disabled
-	 */
-	return DISPLAY_VER(i915) == 11 ||
-	       (IS_DISPLAY_VER(i915, 12, 13) && plane_id == PLANE_CURSOR);
-}
-
-struct skl_plane_ddb_iter {
-	u64 data_rate;
-	u16 start, size;
-};
-
-static void
-skl_allocate_plane_ddb(struct skl_plane_ddb_iter *iter,
-		       struct skl_ddb_entry *ddb,
-		       const struct skl_wm_level *wm,
-		       u64 data_rate)
-{
-	u16 size, extra = 0;
-
-	if (data_rate) {
-		extra = min_t(u16, iter->size,
-			      DIV64_U64_ROUND_UP(iter->size * data_rate,
-						 iter->data_rate));
-		iter->size -= extra;
-		iter->data_rate -= data_rate;
-	}
-
-	/*
-	 * Keep ddb entry of all disabled planes explicitly zeroed
-	 * to avoid skl_ddb_add_affected_planes() adding them to
-	 * the state when other planes change their allocations.
-	 */
-	size = wm->min_ddb_alloc + extra;
-	if (size)
-		iter->start = skl_ddb_entry_init(ddb, iter->start,
-						 iter->start + size);
-}
-
-static int
-skl_crtc_allocate_plane_ddb(struct intel_atomic_state *state,
-			    struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	const struct intel_dbuf_state *dbuf_state =
-		intel_atomic_get_new_dbuf_state(state);
-	const struct skl_ddb_entry *alloc = &dbuf_state->ddb[crtc->pipe];
-	int num_active = hweight8(dbuf_state->active_pipes);
-	struct skl_plane_ddb_iter iter;
-	enum plane_id plane_id;
-	u16 cursor_size;
-	u32 blocks;
-	int level;
-
-	/* Clear the partitioning for disabled planes. */
-	memset(crtc_state->wm.skl.plane_ddb, 0, sizeof(crtc_state->wm.skl.plane_ddb));
-	memset(crtc_state->wm.skl.plane_ddb_y, 0, sizeof(crtc_state->wm.skl.plane_ddb_y));
-
-	if (!crtc_state->hw.active)
-		return 0;
-
-	iter.start = alloc->start;
-	iter.size = skl_ddb_entry_size(alloc);
-	if (iter.size == 0)
-		return 0;
-
-	/* Allocate fixed number of blocks for cursor. */
-	cursor_size = skl_cursor_allocation(crtc_state, num_active);
-	iter.size -= cursor_size;
-	skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb[PLANE_CURSOR],
-			   alloc->end - cursor_size, alloc->end);
-
-	iter.data_rate = skl_total_relative_data_rate(crtc_state);
-
-	/*
-	 * Find the highest watermark level for which we can satisfy the block
-	 * requirement of active planes.
-	 */
-	for (level = ilk_wm_max_level(dev_priv); level >= 0; level--) {
-		blocks = 0;
-		for_each_plane_id_on_crtc(crtc, plane_id) {
-			const struct skl_plane_wm *wm =
-				&crtc_state->wm.skl.optimal.planes[plane_id];
-
-			if (plane_id == PLANE_CURSOR) {
-				const struct skl_ddb_entry *ddb =
-					&crtc_state->wm.skl.plane_ddb[plane_id];
-
-				if (wm->wm[level].min_ddb_alloc > skl_ddb_entry_size(ddb)) {
-					drm_WARN_ON(&dev_priv->drm,
-						    wm->wm[level].min_ddb_alloc != U16_MAX);
-					blocks = U32_MAX;
-					break;
-				}
-				continue;
-			}
-
-			blocks += wm->wm[level].min_ddb_alloc;
-			blocks += wm->uv_wm[level].min_ddb_alloc;
-		}
-
-		if (blocks <= iter.size) {
-			iter.size -= blocks;
-			break;
-		}
-	}
-
-	if (level < 0) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "Requested display configuration exceeds system DDB limitations");
-		drm_dbg_kms(&dev_priv->drm, "minimum required %d/%d\n",
-			    blocks, iter.size);
-		return -EINVAL;
-	}
-
-	/* avoid the WARN later when we don't allocate any extra DDB */
-	if (iter.data_rate == 0)
-		iter.size = 0;
-
-	/*
-	 * Grant each plane the blocks it requires at the highest achievable
-	 * watermark level, plus an extra share of the leftover blocks
-	 * proportional to its relative data rate.
-	 */
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		struct skl_ddb_entry *ddb =
-			&crtc_state->wm.skl.plane_ddb[plane_id];
-		struct skl_ddb_entry *ddb_y =
-			&crtc_state->wm.skl.plane_ddb_y[plane_id];
-		const struct skl_plane_wm *wm =
-			&crtc_state->wm.skl.optimal.planes[plane_id];
-
-		if (plane_id == PLANE_CURSOR)
-			continue;
-
-		if (DISPLAY_VER(dev_priv) < 11 &&
-		    crtc_state->nv12_planes & BIT(plane_id)) {
-			skl_allocate_plane_ddb(&iter, ddb_y, &wm->wm[level],
-					       crtc_state->rel_data_rate_y[plane_id]);
-			skl_allocate_plane_ddb(&iter, ddb, &wm->uv_wm[level],
-					       crtc_state->rel_data_rate[plane_id]);
-		} else {
-			skl_allocate_plane_ddb(&iter, ddb, &wm->wm[level],
-					       crtc_state->rel_data_rate[plane_id]);
-		}
-	}
-	drm_WARN_ON(&dev_priv->drm, iter.size != 0 || iter.data_rate != 0);
-
-	/*
-	 * When we calculated watermark values we didn't know how high
-	 * of a level we'd actually be able to hit, so we just marked
-	 * all levels as "enabled."  Go back now and disable the ones
-	 * that aren't actually possible.
-	 */
-	for (level++; level <= ilk_wm_max_level(dev_priv); level++) {
-		for_each_plane_id_on_crtc(crtc, plane_id) {
-			const struct skl_ddb_entry *ddb =
-				&crtc_state->wm.skl.plane_ddb[plane_id];
-			const struct skl_ddb_entry *ddb_y =
-				&crtc_state->wm.skl.plane_ddb_y[plane_id];
-			struct skl_plane_wm *wm =
-				&crtc_state->wm.skl.optimal.planes[plane_id];
-
-			if (DISPLAY_VER(dev_priv) < 11 &&
-			    crtc_state->nv12_planes & BIT(plane_id))
-				skl_check_nv12_wm_level(&wm->wm[level],
-							&wm->uv_wm[level],
-							ddb_y, ddb);
-			else
-				skl_check_wm_level(&wm->wm[level], ddb);
-
-			if (icl_need_wm1_wa(dev_priv, plane_id) &&
-			    level == 1 && wm->wm[0].enable) {
-				wm->wm[level].blocks = wm->wm[0].blocks;
-				wm->wm[level].lines = wm->wm[0].lines;
-				wm->wm[level].ignore_lines = wm->wm[0].ignore_lines;
-			}
-		}
-	}
-
-	/*
-	 * Go back and disable the transition and SAGV watermarks
-	 * if it turns out we don't have enough DDB blocks for them.
-	 */
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		const struct skl_ddb_entry *ddb =
-			&crtc_state->wm.skl.plane_ddb[plane_id];
-		const struct skl_ddb_entry *ddb_y =
-			&crtc_state->wm.skl.plane_ddb_y[plane_id];
-		struct skl_plane_wm *wm =
-			&crtc_state->wm.skl.optimal.planes[plane_id];
-
-		if (DISPLAY_VER(dev_priv) < 11 &&
-		    crtc_state->nv12_planes & BIT(plane_id)) {
-			skl_check_wm_level(&wm->trans_wm, ddb_y);
-		} else {
-			WARN_ON(skl_ddb_entry_size(ddb_y));
-
-			skl_check_wm_level(&wm->trans_wm, ddb);
-		}
-
-		skl_check_wm_level(&wm->sagv.wm0, ddb);
-		skl_check_wm_level(&wm->sagv.trans_wm, ddb);
-	}
-
-	return 0;
-}
-
-/*
- * The max latency should be 257 (max the punit can code is 255 and we add 2us
- * for the read latency) and cpp should always be <= 8, so that
- * should allow pixel_rate up to ~2 GHz which seems sufficient since max
- * 2xcdclk is 1350 MHz and the pixel rate should never exceed that.
-*/
-static uint_fixed_16_16_t
-skl_wm_method1(const struct drm_i915_private *dev_priv, u32 pixel_rate,
-	       u8 cpp, u32 latency, u32 dbuf_block_size)
-{
-	u32 wm_intermediate_val;
-	uint_fixed_16_16_t ret;
-
-	if (latency == 0)
-		return FP_16_16_MAX;
-
-	wm_intermediate_val = latency * pixel_rate * cpp;
-	ret = div_fixed16(wm_intermediate_val, 1000 * dbuf_block_size);
-
-	if (DISPLAY_VER(dev_priv) >= 10)
-		ret = add_fixed16_u32(ret, 1);
-
-	return ret;
-}
-
-static uint_fixed_16_16_t
-skl_wm_method2(u32 pixel_rate, u32 pipe_htotal, u32 latency,
-	       uint_fixed_16_16_t plane_blocks_per_line)
-{
-	u32 wm_intermediate_val;
-	uint_fixed_16_16_t ret;
-
-	if (latency == 0)
-		return FP_16_16_MAX;
-
-	wm_intermediate_val = latency * pixel_rate;
-	wm_intermediate_val = DIV_ROUND_UP(wm_intermediate_val,
-					   pipe_htotal * 1000);
-	ret = mul_u32_fixed16(wm_intermediate_val, plane_blocks_per_line);
-	return ret;
-}
-
-static uint_fixed_16_16_t
-intel_get_linetime_us(const struct intel_crtc_state *crtc_state)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	u32 pixel_rate;
-	u32 crtc_htotal;
-	uint_fixed_16_16_t linetime_us;
-
-	if (!crtc_state->hw.active)
-		return u32_to_fixed16(0);
-
-	pixel_rate = crtc_state->pixel_rate;
-
-	if (drm_WARN_ON(&dev_priv->drm, pixel_rate == 0))
-		return u32_to_fixed16(0);
-
-	crtc_htotal = crtc_state->hw.pipe_mode.crtc_htotal;
-	linetime_us = div_fixed16(crtc_htotal * 1000, pixel_rate);
-
-	return linetime_us;
-}
-
-static int
-skl_compute_wm_params(const struct intel_crtc_state *crtc_state,
-		      int width, const struct drm_format_info *format,
-		      u64 modifier, unsigned int rotation,
-		      u32 plane_pixel_rate, struct skl_wm_params *wp,
-		      int color_plane)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	u32 interm_pbpl;
-
-	/* only planar format has two planes */
-	if (color_plane == 1 &&
-	    !intel_format_info_is_yuv_semiplanar(format, modifier)) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "Non planar format have single plane\n");
-		return -EINVAL;
-	}
-
-	wp->y_tiled = modifier == I915_FORMAT_MOD_Y_TILED ||
-		      modifier == I915_FORMAT_MOD_4_TILED ||
-		      modifier == I915_FORMAT_MOD_Yf_TILED ||
-		      modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-		      modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
-	wp->x_tiled = modifier == I915_FORMAT_MOD_X_TILED;
-	wp->rc_surface = modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-			 modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
-	wp->is_planar = intel_format_info_is_yuv_semiplanar(format, modifier);
-
-	wp->width = width;
-	if (color_plane == 1 && wp->is_planar)
-		wp->width /= 2;
-
-	wp->cpp = format->cpp[color_plane];
-	wp->plane_pixel_rate = plane_pixel_rate;
-
-	if (DISPLAY_VER(dev_priv) >= 11 &&
-	    modifier == I915_FORMAT_MOD_Yf_TILED  && wp->cpp == 1)
-		wp->dbuf_block_size = 256;
-	else
-		wp->dbuf_block_size = 512;
-
-	if (drm_rotation_90_or_270(rotation)) {
-		switch (wp->cpp) {
-		case 1:
-			wp->y_min_scanlines = 16;
-			break;
-		case 2:
-			wp->y_min_scanlines = 8;
-			break;
-		case 4:
-			wp->y_min_scanlines = 4;
-			break;
-		default:
-			MISSING_CASE(wp->cpp);
-			return -EINVAL;
-		}
-	} else {
-		wp->y_min_scanlines = 4;
-	}
-
-	if (skl_needs_memory_bw_wa(dev_priv))
-		wp->y_min_scanlines *= 2;
-
-	wp->plane_bytes_per_line = wp->width * wp->cpp;
-	if (wp->y_tiled) {
-		interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line *
-					   wp->y_min_scanlines,
-					   wp->dbuf_block_size);
-
-		if (DISPLAY_VER(dev_priv) >= 10)
-			interm_pbpl++;
-
-		wp->plane_blocks_per_line = div_fixed16(interm_pbpl,
-							wp->y_min_scanlines);
-	} else {
-		interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line,
-					   wp->dbuf_block_size);
-
-		if (!wp->x_tiled || DISPLAY_VER(dev_priv) >= 10)
-			interm_pbpl++;
-
-		wp->plane_blocks_per_line = u32_to_fixed16(interm_pbpl);
-	}
-
-	wp->y_tile_minimum = mul_u32_fixed16(wp->y_min_scanlines,
-					     wp->plane_blocks_per_line);
-
-	wp->linetime_us = fixed16_to_u32_round_up(
-					intel_get_linetime_us(crtc_state));
-
-	return 0;
-}
-
-static int
-skl_compute_plane_wm_params(const struct intel_crtc_state *crtc_state,
-			    const struct intel_plane_state *plane_state,
-			    struct skl_wm_params *wp, int color_plane)
-{
-	const struct drm_framebuffer *fb = plane_state->hw.fb;
-	int width;
-
-	/*
-	 * Src coordinates are already rotated by 270 degrees for
-	 * the 90/270 degree plane rotation cases (to match the
-	 * GTT mapping), hence no need to account for rotation here.
-	 */
-	width = drm_rect_width(&plane_state->uapi.src) >> 16;
-
-	return skl_compute_wm_params(crtc_state, width,
-				     fb->format, fb->modifier,
-				     plane_state->hw.rotation,
-				     intel_plane_pixel_rate(crtc_state, plane_state),
-				     wp, color_plane);
-}
-
-static bool skl_wm_has_lines(struct drm_i915_private *dev_priv, int level)
-{
-	if (DISPLAY_VER(dev_priv) >= 10)
-		return true;
-
-	/* The number of lines are ignored for the level 0 watermark. */
-	return level > 0;
-}
-
-static int skl_wm_max_lines(struct drm_i915_private *dev_priv)
-{
-	if (DISPLAY_VER(dev_priv) >= 13)
-		return 255;
-	else
-		return 31;
-}
-
-static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
-				 struct intel_plane *plane,
-				 int level,
-				 unsigned int latency,
-				 const struct skl_wm_params *wp,
-				 const struct skl_wm_level *result_prev,
-				 struct skl_wm_level *result /* out */)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	uint_fixed_16_16_t method1, method2;
-	uint_fixed_16_16_t selected_result;
-	u32 blocks, lines, min_ddb_alloc = 0;
-
-	if (latency == 0 ||
-	    (use_minimal_wm0_only(crtc_state, plane) && level > 0)) {
-		/* reject it */
-		result->min_ddb_alloc = U16_MAX;
-		return;
-	}
-
-	/*
-	 * WaIncreaseLatencyIPCEnabled: kbl,cfl
-	 * Display WA #1141: kbl,cfl
-	 */
-	if ((IS_KABYLAKE(dev_priv) ||
-	     IS_COFFEELAKE(dev_priv) ||
-	     IS_COMETLAKE(dev_priv)) &&
-	    dev_priv->ipc_enabled)
-		latency += 4;
-
-	if (skl_needs_memory_bw_wa(dev_priv) && wp->x_tiled)
-		latency += 15;
-
-	method1 = skl_wm_method1(dev_priv, wp->plane_pixel_rate,
-				 wp->cpp, latency, wp->dbuf_block_size);
-	method2 = skl_wm_method2(wp->plane_pixel_rate,
-				 crtc_state->hw.pipe_mode.crtc_htotal,
-				 latency,
-				 wp->plane_blocks_per_line);
-
-	if (wp->y_tiled) {
-		selected_result = max_fixed16(method2, wp->y_tile_minimum);
-	} else {
-		if ((wp->cpp * crtc_state->hw.pipe_mode.crtc_htotal /
-		     wp->dbuf_block_size < 1) &&
-		     (wp->plane_bytes_per_line / wp->dbuf_block_size < 1)) {
-			selected_result = method2;
-		} else if (latency >= wp->linetime_us) {
-			if (DISPLAY_VER(dev_priv) == 9)
-				selected_result = min_fixed16(method1, method2);
-			else
-				selected_result = method2;
-		} else {
-			selected_result = method1;
-		}
-	}
-
-	blocks = fixed16_to_u32_round_up(selected_result) + 1;
-	/*
-	 * Lets have blocks at minimum equivalent to plane_blocks_per_line
-	 * as there will be at minimum one line for lines configuration. This
-	 * is a work around for FIFO underruns observed with resolutions like
-	 * 4k 60 Hz in single channel DRAM configurations.
-	 *
-	 * As per the Bspec 49325, if the ddb allocation can hold at least
-	 * one plane_blocks_per_line, we should have selected method2 in
-	 * the above logic. Assuming that modern versions have enough dbuf
-	 * and method2 guarantees blocks equivalent to at least 1 line,
-	 * select the blocks as plane_blocks_per_line.
-	 *
-	 * TODO: Revisit the logic when we have better understanding on DRAM
-	 * channels' impact on the level 0 memory latency and the relevant
-	 * wm calculations.
-	 */
-	if (skl_wm_has_lines(dev_priv, level))
-		blocks = max(blocks,
-			     fixed16_to_u32_round_up(wp->plane_blocks_per_line));
-	lines = div_round_up_fixed16(selected_result,
-				     wp->plane_blocks_per_line);
-
-	if (DISPLAY_VER(dev_priv) == 9) {
-		/* Display WA #1125: skl,bxt,kbl */
-		if (level == 0 && wp->rc_surface)
-			blocks += fixed16_to_u32_round_up(wp->y_tile_minimum);
-
-		/* Display WA #1126: skl,bxt,kbl */
-		if (level >= 1 && level <= 7) {
-			if (wp->y_tiled) {
-				blocks += fixed16_to_u32_round_up(wp->y_tile_minimum);
-				lines += wp->y_min_scanlines;
-			} else {
-				blocks++;
-			}
-
-			/*
-			 * Make sure result blocks for higher latency levels are
-			 * atleast as high as level below the current level.
-			 * Assumption in DDB algorithm optimization for special
-			 * cases. Also covers Display WA #1125 for RC.
-			 */
-			if (result_prev->blocks > blocks)
-				blocks = result_prev->blocks;
-		}
-	}
-
-	if (DISPLAY_VER(dev_priv) >= 11) {
-		if (wp->y_tiled) {
-			int extra_lines;
-
-			if (lines % wp->y_min_scanlines == 0)
-				extra_lines = wp->y_min_scanlines;
-			else
-				extra_lines = wp->y_min_scanlines * 2 -
-					lines % wp->y_min_scanlines;
-
-			min_ddb_alloc = mul_round_up_u32_fixed16(lines + extra_lines,
-								 wp->plane_blocks_per_line);
-		} else {
-			min_ddb_alloc = blocks + DIV_ROUND_UP(blocks, 10);
-		}
-	}
-
-	if (!skl_wm_has_lines(dev_priv, level))
-		lines = 0;
-
-	if (lines > skl_wm_max_lines(dev_priv)) {
-		/* reject it */
-		result->min_ddb_alloc = U16_MAX;
-		return;
-	}
-
-	/*
-	 * If lines is valid, assume we can use this watermark level
-	 * for now.  We'll come back and disable it after we calculate the
-	 * DDB allocation if it turns out we don't actually have enough
-	 * blocks to satisfy it.
-	 */
-	result->blocks = blocks;
-	result->lines = lines;
-	/* Bspec says: value >= plane ddb allocation -> invalid, hence the +1 here */
-	result->min_ddb_alloc = max(min_ddb_alloc, blocks) + 1;
-	result->enable = true;
-
-	if (DISPLAY_VER(dev_priv) < 12 && dev_priv->display.sagv.block_time_us)
-		result->can_sagv = latency >= dev_priv->display.sagv.block_time_us;
-}
-
-static void
-skl_compute_wm_levels(const struct intel_crtc_state *crtc_state,
-		      struct intel_plane *plane,
-		      const struct skl_wm_params *wm_params,
-		      struct skl_wm_level *levels)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	int level, max_level = ilk_wm_max_level(dev_priv);
-	struct skl_wm_level *result_prev = &levels[0];
-
-	for (level = 0; level <= max_level; level++) {
-		struct skl_wm_level *result = &levels[level];
-		unsigned int latency = dev_priv->display.wm.skl_latency[level];
-
-		skl_compute_plane_wm(crtc_state, plane, level, latency,
-				     wm_params, result_prev, result);
-
-		result_prev = result;
-	}
-}
-
-static void tgl_compute_sagv_wm(const struct intel_crtc_state *crtc_state,
-				struct intel_plane *plane,
-				const struct skl_wm_params *wm_params,
-				struct skl_plane_wm *plane_wm)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
-	struct skl_wm_level *sagv_wm = &plane_wm->sagv.wm0;
-	struct skl_wm_level *levels = plane_wm->wm;
-	unsigned int latency = 0;
-
-	if (dev_priv->display.sagv.block_time_us)
-		latency = dev_priv->display.sagv.block_time_us + dev_priv->display.wm.skl_latency[0];
-
-	skl_compute_plane_wm(crtc_state, plane, 0, latency,
-			     wm_params, &levels[0],
-			     sagv_wm);
-}
-
-static void skl_compute_transition_wm(struct drm_i915_private *dev_priv,
-				      struct skl_wm_level *trans_wm,
-				      const struct skl_wm_level *wm0,
-				      const struct skl_wm_params *wp)
-{
-	u16 trans_min, trans_amount, trans_y_tile_min;
-	u16 wm0_blocks, trans_offset, blocks;
-
-	/* Transition WM don't make any sense if ipc is disabled */
-	if (!dev_priv->ipc_enabled)
-		return;
-
-	/*
-	 * WaDisableTWM:skl,kbl,cfl,bxt
-	 * Transition WM are not recommended by HW team for GEN9
-	 */
-	if (DISPLAY_VER(dev_priv) == 9)
-		return;
-
-	if (DISPLAY_VER(dev_priv) >= 11)
-		trans_min = 4;
-	else
-		trans_min = 14;
-
-	/* Display WA #1140: glk,cnl */
-	if (DISPLAY_VER(dev_priv) == 10)
-		trans_amount = 0;
-	else
-		trans_amount = 10; /* This is configurable amount */
-
-	trans_offset = trans_min + trans_amount;
-
-	/*
-	 * The spec asks for Selected Result Blocks for wm0 (the real value),
-	 * not Result Blocks (the integer value). Pay attention to the capital
-	 * letters. The value wm_l0->blocks is actually Result Blocks, but
-	 * since Result Blocks is the ceiling of Selected Result Blocks plus 1,
-	 * and since we later will have to get the ceiling of the sum in the
-	 * transition watermarks calculation, we can just pretend Selected
-	 * Result Blocks is Result Blocks minus 1 and it should work for the
-	 * current platforms.
-	 */
-	wm0_blocks = wm0->blocks - 1;
-
-	if (wp->y_tiled) {
-		trans_y_tile_min =
-			(u16)mul_round_up_u32_fixed16(2, wp->y_tile_minimum);
-		blocks = max(wm0_blocks, trans_y_tile_min) + trans_offset;
-	} else {
-		blocks = wm0_blocks + trans_offset;
-	}
-	blocks++;
-
-	/*
-	 * Just assume we can enable the transition watermark.  After
-	 * computing the DDB we'll come back and disable it if that
-	 * assumption turns out to be false.
-	 */
-	trans_wm->blocks = blocks;
-	trans_wm->min_ddb_alloc = max_t(u16, wm0->min_ddb_alloc, blocks + 1);
-	trans_wm->enable = true;
-}
-
-static int skl_build_plane_wm_single(struct intel_crtc_state *crtc_state,
-				     const struct intel_plane_state *plane_state,
-				     struct intel_plane *plane, int color_plane)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane->id];
-	struct skl_wm_params wm_params;
-	int ret;
-
-	ret = skl_compute_plane_wm_params(crtc_state, plane_state,
-					  &wm_params, color_plane);
-	if (ret)
-		return ret;
-
-	skl_compute_wm_levels(crtc_state, plane, &wm_params, wm->wm);
-
-	skl_compute_transition_wm(dev_priv, &wm->trans_wm,
-				  &wm->wm[0], &wm_params);
-
-	if (DISPLAY_VER(dev_priv) >= 12) {
-		tgl_compute_sagv_wm(crtc_state, plane, &wm_params, wm);
-
-		skl_compute_transition_wm(dev_priv, &wm->sagv.trans_wm,
-					  &wm->sagv.wm0, &wm_params);
-	}
-
-	return 0;
-}
-
-static int skl_build_plane_wm_uv(struct intel_crtc_state *crtc_state,
-				 const struct intel_plane_state *plane_state,
-				 struct intel_plane *plane)
-{
-	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane->id];
-	struct skl_wm_params wm_params;
-	int ret;
-
-	wm->is_planar = true;
-
-	/* uv plane watermarks must also be validated for NV12/Planar */
-	ret = skl_compute_plane_wm_params(crtc_state, plane_state,
-					  &wm_params, 1);
-	if (ret)
-		return ret;
-
-	skl_compute_wm_levels(crtc_state, plane, &wm_params, wm->uv_wm);
-
-	return 0;
-}
-
-static int skl_build_plane_wm(struct intel_crtc_state *crtc_state,
-			      const struct intel_plane_state *plane_state)
-{
-	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-	enum plane_id plane_id = plane->id;
-	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id];
-	const struct drm_framebuffer *fb = plane_state->hw.fb;
-	int ret;
-
-	memset(wm, 0, sizeof(*wm));
-
-	if (!intel_wm_plane_visible(crtc_state, plane_state))
-		return 0;
-
-	ret = skl_build_plane_wm_single(crtc_state, plane_state,
-					plane, 0);
-	if (ret)
-		return ret;
-
-	if (fb->format->is_yuv && fb->format->num_planes > 1) {
-		ret = skl_build_plane_wm_uv(crtc_state, plane_state,
-					    plane);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-static int icl_build_plane_wm(struct intel_crtc_state *crtc_state,
-			      const struct intel_plane_state *plane_state)
-{
-	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
-	enum plane_id plane_id = plane->id;
-	struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id];
-	int ret;
-
-	/* Watermarks calculated in master */
-	if (plane_state->planar_slave)
-		return 0;
-
-	memset(wm, 0, sizeof(*wm));
-
-	if (plane_state->planar_linked_plane) {
-		const struct drm_framebuffer *fb = plane_state->hw.fb;
-
-		drm_WARN_ON(&dev_priv->drm,
-			    !intel_wm_plane_visible(crtc_state, plane_state));
-		drm_WARN_ON(&dev_priv->drm, !fb->format->is_yuv ||
-			    fb->format->num_planes == 1);
-
-		ret = skl_build_plane_wm_single(crtc_state, plane_state,
-						plane_state->planar_linked_plane, 0);
-		if (ret)
-			return ret;
-
-		ret = skl_build_plane_wm_single(crtc_state, plane_state,
-						plane, 1);
-		if (ret)
-			return ret;
-	} else if (intel_wm_plane_visible(crtc_state, plane_state)) {
-		ret = skl_build_plane_wm_single(crtc_state, plane_state,
-						plane, 0);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-static int skl_build_pipe_wm(struct intel_atomic_state *state,
-			     struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	const struct intel_plane_state *plane_state;
-	struct intel_plane *plane;
-	int ret, i;
-
-	for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
-		/*
-		 * FIXME should perhaps check {old,new}_plane_crtc->hw.crtc
-		 * instead but we don't populate that correctly for NV12 Y
-		 * planes so for now hack this.
-		 */
-		if (plane->pipe != crtc->pipe)
-			continue;
-
-		if (DISPLAY_VER(dev_priv) >= 11)
-			ret = icl_build_plane_wm(crtc_state, plane_state);
-		else
-			ret = skl_build_plane_wm(crtc_state, plane_state);
-		if (ret)
-			return ret;
-	}
-
-	crtc_state->wm.skl.optimal = crtc_state->wm.skl.raw;
-
-	return 0;
-}
-
-static void skl_ddb_entry_write(struct drm_i915_private *dev_priv,
-				i915_reg_t reg,
-				const struct skl_ddb_entry *entry)
-{
-	if (entry->end)
-		intel_de_write_fw(dev_priv, reg,
-				  PLANE_BUF_END(entry->end - 1) |
-				  PLANE_BUF_START(entry->start));
-	else
-		intel_de_write_fw(dev_priv, reg, 0);
-}
-
-static void skl_write_wm_level(struct drm_i915_private *dev_priv,
-			       i915_reg_t reg,
-			       const struct skl_wm_level *level)
-{
-	u32 val = 0;
-
-	if (level->enable)
-		val |= PLANE_WM_EN;
-	if (level->ignore_lines)
-		val |= PLANE_WM_IGNORE_LINES;
-	val |= REG_FIELD_PREP(PLANE_WM_BLOCKS_MASK, level->blocks);
-	val |= REG_FIELD_PREP(PLANE_WM_LINES_MASK, level->lines);
-
-	intel_de_write_fw(dev_priv, reg, val);
-}
-
-void skl_write_plane_wm(struct intel_plane *plane,
-			const struct intel_crtc_state *crtc_state)
-{
-	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
-	int level, max_level = ilk_wm_max_level(dev_priv);
-	enum plane_id plane_id = plane->id;
-	enum pipe pipe = plane->pipe;
-	const struct skl_pipe_wm *pipe_wm = &crtc_state->wm.skl.optimal;
-	const struct skl_ddb_entry *ddb =
-		&crtc_state->wm.skl.plane_ddb[plane_id];
-	const struct skl_ddb_entry *ddb_y =
-		&crtc_state->wm.skl.plane_ddb_y[plane_id];
-
-	for (level = 0; level <= max_level; level++)
-		skl_write_wm_level(dev_priv, PLANE_WM(pipe, plane_id, level),
-				   skl_plane_wm_level(pipe_wm, plane_id, level));
-
-	skl_write_wm_level(dev_priv, PLANE_WM_TRANS(pipe, plane_id),
-			   skl_plane_trans_wm(pipe_wm, plane_id));
-
-	if (HAS_HW_SAGV_WM(dev_priv)) {
-		const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
-
-		skl_write_wm_level(dev_priv, PLANE_WM_SAGV(pipe, plane_id),
-				   &wm->sagv.wm0);
-		skl_write_wm_level(dev_priv, PLANE_WM_SAGV_TRANS(pipe, plane_id),
-				   &wm->sagv.trans_wm);
-	}
-
-	skl_ddb_entry_write(dev_priv,
-			    PLANE_BUF_CFG(pipe, plane_id), ddb);
-
-	if (DISPLAY_VER(dev_priv) < 11)
-		skl_ddb_entry_write(dev_priv,
-				    PLANE_NV12_BUF_CFG(pipe, plane_id), ddb_y);
-}
-
-void skl_write_cursor_wm(struct intel_plane *plane,
-			 const struct intel_crtc_state *crtc_state)
-{
-	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
-	int level, max_level = ilk_wm_max_level(dev_priv);
-	enum plane_id plane_id = plane->id;
-	enum pipe pipe = plane->pipe;
-	const struct skl_pipe_wm *pipe_wm = &crtc_state->wm.skl.optimal;
-	const struct skl_ddb_entry *ddb =
-		&crtc_state->wm.skl.plane_ddb[plane_id];
-
-	for (level = 0; level <= max_level; level++)
-		skl_write_wm_level(dev_priv, CUR_WM(pipe, level),
-				   skl_plane_wm_level(pipe_wm, plane_id, level));
-
-	skl_write_wm_level(dev_priv, CUR_WM_TRANS(pipe),
-			   skl_plane_trans_wm(pipe_wm, plane_id));
-
-	if (HAS_HW_SAGV_WM(dev_priv)) {
-		const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
-
-		skl_write_wm_level(dev_priv, CUR_WM_SAGV(pipe),
-				   &wm->sagv.wm0);
-		skl_write_wm_level(dev_priv, CUR_WM_SAGV_TRANS(pipe),
-				   &wm->sagv.trans_wm);
-	}
-
-	skl_ddb_entry_write(dev_priv, CUR_BUF_CFG(pipe), ddb);
-}
-
-static bool skl_wm_level_equals(const struct skl_wm_level *l1,
-				const struct skl_wm_level *l2)
-{
-	return l1->enable == l2->enable &&
-		l1->ignore_lines == l2->ignore_lines &&
-		l1->lines == l2->lines &&
-		l1->blocks == l2->blocks;
-}
-
-static bool skl_plane_wm_equals(struct drm_i915_private *dev_priv,
-				const struct skl_plane_wm *wm1,
-				const struct skl_plane_wm *wm2)
-{
-	int level, max_level = ilk_wm_max_level(dev_priv);
-
-	for (level = 0; level <= max_level; level++) {
-		/*
-		 * We don't check uv_wm as the hardware doesn't actually
-		 * use it. It only gets used for calculating the required
-		 * ddb allocation.
-		 */
-		if (!skl_wm_level_equals(&wm1->wm[level], &wm2->wm[level]))
-			return false;
-	}
-
-	return skl_wm_level_equals(&wm1->trans_wm, &wm2->trans_wm) &&
-		skl_wm_level_equals(&wm1->sagv.wm0, &wm2->sagv.wm0) &&
-		skl_wm_level_equals(&wm1->sagv.trans_wm, &wm2->sagv.trans_wm);
-}
-
-static bool skl_ddb_entries_overlap(const struct skl_ddb_entry *a,
-				    const struct skl_ddb_entry *b)
-{
-	return a->start < b->end && b->start < a->end;
-}
-
-static void skl_ddb_entry_union(struct skl_ddb_entry *a,
-				const struct skl_ddb_entry *b)
-{
-	if (a->end && b->end) {
-		a->start = min(a->start, b->start);
-		a->end = max(a->end, b->end);
-	} else if (b->end) {
-		a->start = b->start;
-		a->end = b->end;
-	}
-}
-
-bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry *ddb,
-				 const struct skl_ddb_entry *entries,
-				 int num_entries, int ignore_idx)
-{
-	int i;
-
-	for (i = 0; i < num_entries; i++) {
-		if (i != ignore_idx &&
-		    skl_ddb_entries_overlap(ddb, &entries[i]))
-			return true;
-	}
-
-	return false;
-}
-
-static int
-skl_ddb_add_affected_planes(const struct intel_crtc_state *old_crtc_state,
-			    struct intel_crtc_state *new_crtc_state)
-{
-	struct intel_atomic_state *state = to_intel_atomic_state(new_crtc_state->uapi.state);
-	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct intel_plane *plane;
-
-	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
-		struct intel_plane_state *plane_state;
-		enum plane_id plane_id = plane->id;
-
-		if (skl_ddb_entry_equal(&old_crtc_state->wm.skl.plane_ddb[plane_id],
-					&new_crtc_state->wm.skl.plane_ddb[plane_id]) &&
-		    skl_ddb_entry_equal(&old_crtc_state->wm.skl.plane_ddb_y[plane_id],
-					&new_crtc_state->wm.skl.plane_ddb_y[plane_id]))
-			continue;
-
-		plane_state = intel_atomic_get_plane_state(state, plane);
-		if (IS_ERR(plane_state))
-			return PTR_ERR(plane_state);
-
-		new_crtc_state->update_planes |= BIT(plane_id);
-	}
-
-	return 0;
-}
-
-static u8 intel_dbuf_enabled_slices(const struct intel_dbuf_state *dbuf_state)
-{
-	struct drm_i915_private *dev_priv = to_i915(dbuf_state->base.state->base.dev);
-	u8 enabled_slices;
-	enum pipe pipe;
-
-	/*
-	 * FIXME: For now we always enable slice S1 as per
-	 * the Bspec display initialization sequence.
-	 */
-	enabled_slices = BIT(DBUF_S1);
-
-	for_each_pipe(dev_priv, pipe)
-		enabled_slices |= dbuf_state->slices[pipe];
-
-	return enabled_slices;
-}
-
-static int
-skl_compute_ddb(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	const struct intel_dbuf_state *old_dbuf_state;
-	struct intel_dbuf_state *new_dbuf_state = NULL;
-	const struct intel_crtc_state *old_crtc_state;
-	struct intel_crtc_state *new_crtc_state;
-	struct intel_crtc *crtc;
-	int ret, i;
-
-	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
-		new_dbuf_state = intel_atomic_get_dbuf_state(state);
-		if (IS_ERR(new_dbuf_state))
-			return PTR_ERR(new_dbuf_state);
-
-		old_dbuf_state = intel_atomic_get_old_dbuf_state(state);
-		break;
-	}
-
-	if (!new_dbuf_state)
-		return 0;
-
-	new_dbuf_state->active_pipes =
-		intel_calc_active_pipes(state, old_dbuf_state->active_pipes);
-
-	if (old_dbuf_state->active_pipes != new_dbuf_state->active_pipes) {
-		ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
-		if (ret)
-			return ret;
-	}
-
-	if (HAS_MBUS_JOINING(dev_priv))
-		new_dbuf_state->joined_mbus =
-			adlp_check_mbus_joined(new_dbuf_state->active_pipes);
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		enum pipe pipe = crtc->pipe;
-
-		new_dbuf_state->slices[pipe] =
-			skl_compute_dbuf_slices(crtc, new_dbuf_state->active_pipes,
-						new_dbuf_state->joined_mbus);
-
-		if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe])
-			continue;
-
-		ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
-		if (ret)
-			return ret;
-	}
-
-	new_dbuf_state->enabled_slices = intel_dbuf_enabled_slices(new_dbuf_state);
-
-	if (old_dbuf_state->enabled_slices != new_dbuf_state->enabled_slices ||
-	    old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) {
-		ret = intel_atomic_serialize_global_state(&new_dbuf_state->base);
-		if (ret)
-			return ret;
-
-		if (old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) {
-			/* TODO: Implement vblank synchronized MBUS joining changes */
-			ret = intel_modeset_all_pipes(state);
-			if (ret)
-				return ret;
-		}
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "Enabled dbuf slices 0x%x -> 0x%x (total dbuf slices 0x%x), mbus joined? %s->%s\n",
-			    old_dbuf_state->enabled_slices,
-			    new_dbuf_state->enabled_slices,
-			    INTEL_INFO(dev_priv)->display.dbuf.slice_mask,
-			    str_yes_no(old_dbuf_state->joined_mbus),
-			    str_yes_no(new_dbuf_state->joined_mbus));
-	}
-
-	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
-		enum pipe pipe = crtc->pipe;
-
-		new_dbuf_state->weight[pipe] = intel_crtc_ddb_weight(new_crtc_state);
-
-		if (old_dbuf_state->weight[pipe] == new_dbuf_state->weight[pipe])
-			continue;
-
-		ret = intel_atomic_lock_global_state(&new_dbuf_state->base);
-		if (ret)
-			return ret;
-	}
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		ret = skl_crtc_allocate_ddb(state, crtc);
-		if (ret)
-			return ret;
-	}
-
-	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
-					    new_crtc_state, i) {
-		ret = skl_crtc_allocate_plane_ddb(state, crtc);
-		if (ret)
-			return ret;
-
-		ret = skl_ddb_add_affected_planes(old_crtc_state,
-						  new_crtc_state);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-static char enast(bool enable)
-{
-	return enable ? '*' : ' ';
-}
-
-static void
-skl_print_wm_changes(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	const struct intel_crtc_state *old_crtc_state;
-	const struct intel_crtc_state *new_crtc_state;
-	struct intel_plane *plane;
-	struct intel_crtc *crtc;
-	int i;
-
-	if (!drm_debug_enabled(DRM_UT_KMS))
-		return;
-
-	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
-					    new_crtc_state, i) {
-		const struct skl_pipe_wm *old_pipe_wm, *new_pipe_wm;
-
-		old_pipe_wm = &old_crtc_state->wm.skl.optimal;
-		new_pipe_wm = &new_crtc_state->wm.skl.optimal;
-
-		for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
-			enum plane_id plane_id = plane->id;
-			const struct skl_ddb_entry *old, *new;
-
-			old = &old_crtc_state->wm.skl.plane_ddb[plane_id];
-			new = &new_crtc_state->wm.skl.plane_ddb[plane_id];
-
-			if (skl_ddb_entry_equal(old, new))
-				continue;
-
-			drm_dbg_kms(&dev_priv->drm,
-				    "[PLANE:%d:%s] ddb (%4d - %4d) -> (%4d - %4d), size %4d -> %4d\n",
-				    plane->base.base.id, plane->base.name,
-				    old->start, old->end, new->start, new->end,
-				    skl_ddb_entry_size(old), skl_ddb_entry_size(new));
-		}
-
-		for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
-			enum plane_id plane_id = plane->id;
-			const struct skl_plane_wm *old_wm, *new_wm;
-
-			old_wm = &old_pipe_wm->planes[plane_id];
-			new_wm = &new_pipe_wm->planes[plane_id];
-
-			if (skl_plane_wm_equals(dev_priv, old_wm, new_wm))
-				continue;
-
-			drm_dbg_kms(&dev_priv->drm,
-				    "[PLANE:%d:%s]   level %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm"
-				    " -> %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm\n",
-				    plane->base.base.id, plane->base.name,
-				    enast(old_wm->wm[0].enable), enast(old_wm->wm[1].enable),
-				    enast(old_wm->wm[2].enable), enast(old_wm->wm[3].enable),
-				    enast(old_wm->wm[4].enable), enast(old_wm->wm[5].enable),
-				    enast(old_wm->wm[6].enable), enast(old_wm->wm[7].enable),
-				    enast(old_wm->trans_wm.enable),
-				    enast(old_wm->sagv.wm0.enable),
-				    enast(old_wm->sagv.trans_wm.enable),
-				    enast(new_wm->wm[0].enable), enast(new_wm->wm[1].enable),
-				    enast(new_wm->wm[2].enable), enast(new_wm->wm[3].enable),
-				    enast(new_wm->wm[4].enable), enast(new_wm->wm[5].enable),
-				    enast(new_wm->wm[6].enable), enast(new_wm->wm[7].enable),
-				    enast(new_wm->trans_wm.enable),
-				    enast(new_wm->sagv.wm0.enable),
-				    enast(new_wm->sagv.trans_wm.enable));
-
-			drm_dbg_kms(&dev_priv->drm,
-				    "[PLANE:%d:%s]   lines %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d"
-				      " -> %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d\n",
-				    plane->base.base.id, plane->base.name,
-				    enast(old_wm->wm[0].ignore_lines), old_wm->wm[0].lines,
-				    enast(old_wm->wm[1].ignore_lines), old_wm->wm[1].lines,
-				    enast(old_wm->wm[2].ignore_lines), old_wm->wm[2].lines,
-				    enast(old_wm->wm[3].ignore_lines), old_wm->wm[3].lines,
-				    enast(old_wm->wm[4].ignore_lines), old_wm->wm[4].lines,
-				    enast(old_wm->wm[5].ignore_lines), old_wm->wm[5].lines,
-				    enast(old_wm->wm[6].ignore_lines), old_wm->wm[6].lines,
-				    enast(old_wm->wm[7].ignore_lines), old_wm->wm[7].lines,
-				    enast(old_wm->trans_wm.ignore_lines), old_wm->trans_wm.lines,
-				    enast(old_wm->sagv.wm0.ignore_lines), old_wm->sagv.wm0.lines,
-				    enast(old_wm->sagv.trans_wm.ignore_lines), old_wm->sagv.trans_wm.lines,
-				    enast(new_wm->wm[0].ignore_lines), new_wm->wm[0].lines,
-				    enast(new_wm->wm[1].ignore_lines), new_wm->wm[1].lines,
-				    enast(new_wm->wm[2].ignore_lines), new_wm->wm[2].lines,
-				    enast(new_wm->wm[3].ignore_lines), new_wm->wm[3].lines,
-				    enast(new_wm->wm[4].ignore_lines), new_wm->wm[4].lines,
-				    enast(new_wm->wm[5].ignore_lines), new_wm->wm[5].lines,
-				    enast(new_wm->wm[6].ignore_lines), new_wm->wm[6].lines,
-				    enast(new_wm->wm[7].ignore_lines), new_wm->wm[7].lines,
-				    enast(new_wm->trans_wm.ignore_lines), new_wm->trans_wm.lines,
-				    enast(new_wm->sagv.wm0.ignore_lines), new_wm->sagv.wm0.lines,
-				    enast(new_wm->sagv.trans_wm.ignore_lines), new_wm->sagv.trans_wm.lines);
-
-			drm_dbg_kms(&dev_priv->drm,
-				    "[PLANE:%d:%s]  blocks %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d"
-				    " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n",
-				    plane->base.base.id, plane->base.name,
-				    old_wm->wm[0].blocks, old_wm->wm[1].blocks,
-				    old_wm->wm[2].blocks, old_wm->wm[3].blocks,
-				    old_wm->wm[4].blocks, old_wm->wm[5].blocks,
-				    old_wm->wm[6].blocks, old_wm->wm[7].blocks,
-				    old_wm->trans_wm.blocks,
-				    old_wm->sagv.wm0.blocks,
-				    old_wm->sagv.trans_wm.blocks,
-				    new_wm->wm[0].blocks, new_wm->wm[1].blocks,
-				    new_wm->wm[2].blocks, new_wm->wm[3].blocks,
-				    new_wm->wm[4].blocks, new_wm->wm[5].blocks,
-				    new_wm->wm[6].blocks, new_wm->wm[7].blocks,
-				    new_wm->trans_wm.blocks,
-				    new_wm->sagv.wm0.blocks,
-				    new_wm->sagv.trans_wm.blocks);
-
-			drm_dbg_kms(&dev_priv->drm,
-				    "[PLANE:%d:%s] min_ddb %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d"
-				    " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n",
-				    plane->base.base.id, plane->base.name,
-				    old_wm->wm[0].min_ddb_alloc, old_wm->wm[1].min_ddb_alloc,
-				    old_wm->wm[2].min_ddb_alloc, old_wm->wm[3].min_ddb_alloc,
-				    old_wm->wm[4].min_ddb_alloc, old_wm->wm[5].min_ddb_alloc,
-				    old_wm->wm[6].min_ddb_alloc, old_wm->wm[7].min_ddb_alloc,
-				    old_wm->trans_wm.min_ddb_alloc,
-				    old_wm->sagv.wm0.min_ddb_alloc,
-				    old_wm->sagv.trans_wm.min_ddb_alloc,
-				    new_wm->wm[0].min_ddb_alloc, new_wm->wm[1].min_ddb_alloc,
-				    new_wm->wm[2].min_ddb_alloc, new_wm->wm[3].min_ddb_alloc,
-				    new_wm->wm[4].min_ddb_alloc, new_wm->wm[5].min_ddb_alloc,
-				    new_wm->wm[6].min_ddb_alloc, new_wm->wm[7].min_ddb_alloc,
-				    new_wm->trans_wm.min_ddb_alloc,
-				    new_wm->sagv.wm0.min_ddb_alloc,
-				    new_wm->sagv.trans_wm.min_ddb_alloc);
-		}
-	}
-}
-
-static bool skl_plane_selected_wm_equals(struct intel_plane *plane,
-					 const struct skl_pipe_wm *old_pipe_wm,
-					 const struct skl_pipe_wm *new_pipe_wm)
-{
-	struct drm_i915_private *i915 = to_i915(plane->base.dev);
-	int level, max_level = ilk_wm_max_level(i915);
-
-	for (level = 0; level <= max_level; level++) {
-		/*
-		 * We don't check uv_wm as the hardware doesn't actually
-		 * use it. It only gets used for calculating the required
-		 * ddb allocation.
-		 */
-		if (!skl_wm_level_equals(skl_plane_wm_level(old_pipe_wm, plane->id, level),
-					 skl_plane_wm_level(new_pipe_wm, plane->id, level)))
-			return false;
-	}
-
-	if (HAS_HW_SAGV_WM(i915)) {
-		const struct skl_plane_wm *old_wm = &old_pipe_wm->planes[plane->id];
-		const struct skl_plane_wm *new_wm = &new_pipe_wm->planes[plane->id];
-
-		if (!skl_wm_level_equals(&old_wm->sagv.wm0, &new_wm->sagv.wm0) ||
-		    !skl_wm_level_equals(&old_wm->sagv.trans_wm, &new_wm->sagv.trans_wm))
-			return false;
-	}
-
-	return skl_wm_level_equals(skl_plane_trans_wm(old_pipe_wm, plane->id),
-				   skl_plane_trans_wm(new_pipe_wm, plane->id));
-}
-
-/*
- * To make sure the cursor watermark registers are always consistent
- * with our computed state the following scenario needs special
- * treatment:
- *
- * 1. enable cursor
- * 2. move cursor entirely offscreen
- * 3. disable cursor
- *
- * Step 2. does call .disable_plane() but does not zero the watermarks
- * (since we consider an offscreen cursor still active for the purposes
- * of watermarks). Step 3. would not normally call .disable_plane()
- * because the actual plane visibility isn't changing, and we don't
- * deallocate the cursor ddb until the pipe gets disabled. So we must
- * force step 3. to call .disable_plane() to update the watermark
- * registers properly.
- *
- * Other planes do not suffer from this issues as their watermarks are
- * calculated based on the actual plane visibility. The only time this
- * can trigger for the other planes is during the initial readout as the
- * default value of the watermarks registers is not zero.
- */
-static int skl_wm_add_affected_planes(struct intel_atomic_state *state,
-				      struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct intel_crtc_state *old_crtc_state =
-		intel_atomic_get_old_crtc_state(state, crtc);
-	struct intel_crtc_state *new_crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-	struct intel_plane *plane;
-
-	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
-		struct intel_plane_state *plane_state;
-		enum plane_id plane_id = plane->id;
-
-		/*
-		 * Force a full wm update for every plane on modeset.
-		 * Required because the reset value of the wm registers
-		 * is non-zero, whereas we want all disabled planes to
-		 * have zero watermarks. So if we turn off the relevant
-		 * power well the hardware state will go out of sync
-		 * with the software state.
-		 */
-		if (!drm_atomic_crtc_needs_modeset(&new_crtc_state->uapi) &&
-		    skl_plane_selected_wm_equals(plane,
-						 &old_crtc_state->wm.skl.optimal,
-						 &new_crtc_state->wm.skl.optimal))
-			continue;
-
-		plane_state = intel_atomic_get_plane_state(state, plane);
-		if (IS_ERR(plane_state))
-			return PTR_ERR(plane_state);
-
-		new_crtc_state->update_planes |= BIT(plane_id);
-	}
-
-	return 0;
-}
-
-static int
-skl_compute_wm(struct intel_atomic_state *state)
-{
-	struct intel_crtc *crtc;
-	struct intel_crtc_state *new_crtc_state;
-	int ret, i;
-
-	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
-		ret = skl_build_pipe_wm(state, crtc);
-		if (ret)
-			return ret;
-	}
-
-	ret = skl_compute_ddb(state);
-	if (ret)
-		return ret;
-
-	ret = intel_compute_sagv_mask(state);
-	if (ret)
-		return ret;
-
-	/*
-	 * skl_compute_ddb() will have adjusted the final watermarks
-	 * based on how much ddb is available. Now we can actually
-	 * check if the final watermarks changed.
-	 */
-	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
-		ret = skl_wm_add_affected_planes(state, crtc);
-		if (ret)
-			return ret;
-	}
-
-	skl_print_wm_changes(state);
-
-	return 0;
-}
-
-static void ilk_compute_wm_config(struct drm_i915_private *dev_priv,
-				  struct intel_wm_config *config)
-{
-	struct intel_crtc *crtc;
-
-	/* Compute the currently _active_ config */
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		const struct intel_pipe_wm *wm = &crtc->wm.active.ilk;
-
-		if (!wm->pipe_enabled)
-			continue;
-
-		config->sprites_enabled |= wm->sprites_enabled;
-		config->sprites_scaled |= wm->sprites_scaled;
-		config->num_pipes_active++;
-	}
-}
-
-static void ilk_program_watermarks(struct drm_i915_private *dev_priv)
-{
-	struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {}, *best_lp_wm;
-	struct ilk_wm_maximums max;
-	struct intel_wm_config config = {};
-	struct ilk_wm_values results = {};
-	enum intel_ddb_partitioning partitioning;
-
-	ilk_compute_wm_config(dev_priv, &config);
-
-	ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_1_2, &max);
-	ilk_wm_merge(dev_priv, &config, &max, &lp_wm_1_2);
-
-	/* 5/6 split only in single pipe config on IVB+ */
-	if (DISPLAY_VER(dev_priv) >= 7 &&
-	    config.num_pipes_active == 1 && config.sprites_enabled) {
-		ilk_compute_wm_maximums(dev_priv, 1, &config, INTEL_DDB_PART_5_6, &max);
-		ilk_wm_merge(dev_priv, &config, &max, &lp_wm_5_6);
-
-		best_lp_wm = ilk_find_best_result(dev_priv, &lp_wm_1_2, &lp_wm_5_6);
-	} else {
-		best_lp_wm = &lp_wm_1_2;
-	}
-
-	partitioning = (best_lp_wm == &lp_wm_1_2) ?
-		       INTEL_DDB_PART_1_2 : INTEL_DDB_PART_5_6;
-
-	ilk_compute_wm_results(dev_priv, best_lp_wm, partitioning, &results);
-
-	ilk_write_wm_values(dev_priv, &results);
-}
-
-static void ilk_initial_watermarks(struct intel_atomic_state *state,
-				   struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-	crtc->wm.active.ilk = crtc_state->wm.ilk.intermediate;
-	ilk_program_watermarks(dev_priv);
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void ilk_optimize_watermarks(struct intel_atomic_state *state,
-				    struct intel_crtc *crtc)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	const struct intel_crtc_state *crtc_state =
-		intel_atomic_get_new_crtc_state(state, crtc);
-
-	if (!crtc_state->wm.need_postvbl_update)
-		return;
-
-	mutex_lock(&dev_priv->display.wm.wm_mutex);
-	crtc->wm.active.ilk = crtc_state->wm.ilk.optimal;
-	ilk_program_watermarks(dev_priv);
-	mutex_unlock(&dev_priv->display.wm.wm_mutex);
-}
-
-static void skl_wm_level_from_reg_val(u32 val, struct skl_wm_level *level)
-{
-	level->enable = val & PLANE_WM_EN;
-	level->ignore_lines = val & PLANE_WM_IGNORE_LINES;
-	level->blocks = REG_FIELD_GET(PLANE_WM_BLOCKS_MASK, val);
-	level->lines = REG_FIELD_GET(PLANE_WM_LINES_MASK, val);
-}
-
-static void skl_pipe_wm_get_hw_state(struct intel_crtc *crtc,
-				     struct skl_pipe_wm *out)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum pipe pipe = crtc->pipe;
-	int level, max_level;
-	enum plane_id plane_id;
-	u32 val;
-
-	max_level = ilk_wm_max_level(dev_priv);
-
-	for_each_plane_id_on_crtc(crtc, plane_id) {
-		struct skl_plane_wm *wm = &out->planes[plane_id];
-
-		for (level = 0; level <= max_level; level++) {
-			if (plane_id != PLANE_CURSOR)
-				val = intel_uncore_read(&dev_priv->uncore, PLANE_WM(pipe, plane_id, level));
-			else
-				val = intel_uncore_read(&dev_priv->uncore, CUR_WM(pipe, level));
-
-			skl_wm_level_from_reg_val(val, &wm->wm[level]);
-		}
-
-		if (plane_id != PLANE_CURSOR)
-			val = intel_uncore_read(&dev_priv->uncore, PLANE_WM_TRANS(pipe, plane_id));
-		else
-			val = intel_uncore_read(&dev_priv->uncore, CUR_WM_TRANS(pipe));
-
-		skl_wm_level_from_reg_val(val, &wm->trans_wm);
-
-		if (HAS_HW_SAGV_WM(dev_priv)) {
-			if (plane_id != PLANE_CURSOR)
-				val = intel_uncore_read(&dev_priv->uncore,
-							PLANE_WM_SAGV(pipe, plane_id));
-			else
-				val = intel_uncore_read(&dev_priv->uncore,
-							CUR_WM_SAGV(pipe));
-
-			skl_wm_level_from_reg_val(val, &wm->sagv.wm0);
-
-			if (plane_id != PLANE_CURSOR)
-				val = intel_uncore_read(&dev_priv->uncore,
-							PLANE_WM_SAGV_TRANS(pipe, plane_id));
-			else
-				val = intel_uncore_read(&dev_priv->uncore,
-							CUR_WM_SAGV_TRANS(pipe));
-
-			skl_wm_level_from_reg_val(val, &wm->sagv.trans_wm);
-		} else if (DISPLAY_VER(dev_priv) >= 12) {
-			wm->sagv.wm0 = wm->wm[0];
-			wm->sagv.trans_wm = wm->trans_wm;
-		}
-	}
-}
-
-void skl_wm_get_hw_state(struct drm_i915_private *dev_priv)
-{
-	struct intel_dbuf_state *dbuf_state =
-		to_intel_dbuf_state(dev_priv->display.dbuf.obj.state);
-	struct intel_crtc *crtc;
-
-	if (HAS_MBUS_JOINING(dev_priv))
-		dbuf_state->joined_mbus = intel_de_read(dev_priv, MBUS_CTL) & MBUS_JOIN;
-
-	for_each_intel_crtc(&dev_priv->drm, crtc) {
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		enum pipe pipe = crtc->pipe;
-		unsigned int mbus_offset;
-		enum plane_id plane_id;
-		u8 slices;
-
-		memset(&crtc_state->wm.skl.optimal, 0,
-		       sizeof(crtc_state->wm.skl.optimal));
-		if (crtc_state->hw.active)
-			skl_pipe_wm_get_hw_state(crtc, &crtc_state->wm.skl.optimal);
-		crtc_state->wm.skl.raw = crtc_state->wm.skl.optimal;
-
-		memset(&dbuf_state->ddb[pipe], 0, sizeof(dbuf_state->ddb[pipe]));
-
-		for_each_plane_id_on_crtc(crtc, plane_id) {
-			struct skl_ddb_entry *ddb =
-				&crtc_state->wm.skl.plane_ddb[plane_id];
-			struct skl_ddb_entry *ddb_y =
-				&crtc_state->wm.skl.plane_ddb_y[plane_id];
-
-			if (!crtc_state->hw.active)
-				continue;
-
-			skl_ddb_get_hw_plane_state(dev_priv, crtc->pipe,
-						   plane_id, ddb, ddb_y);
-
-			skl_ddb_entry_union(&dbuf_state->ddb[pipe], ddb);
-			skl_ddb_entry_union(&dbuf_state->ddb[pipe], ddb_y);
-		}
-
-		dbuf_state->weight[pipe] = intel_crtc_ddb_weight(crtc_state);
-
-		/*
-		 * Used for checking overlaps, so we need absolute
-		 * offsets instead of MBUS relative offsets.
-		 */
-		slices = skl_compute_dbuf_slices(crtc, dbuf_state->active_pipes,
-						 dbuf_state->joined_mbus);
-		mbus_offset = mbus_ddb_offset(dev_priv, slices);
-		crtc_state->wm.skl.ddb.start = mbus_offset + dbuf_state->ddb[pipe].start;
-		crtc_state->wm.skl.ddb.end = mbus_offset + dbuf_state->ddb[pipe].end;
-
-		/* The slices actually used by the planes on the pipe */
-		dbuf_state->slices[pipe] =
-			skl_ddb_dbuf_slice_mask(dev_priv, &crtc_state->wm.skl.ddb);
-
-		drm_dbg_kms(&dev_priv->drm,
-			    "[CRTC:%d:%s] dbuf slices 0x%x, ddb (%d - %d), active pipes 0x%x, mbus joined: %s\n",
-			    crtc->base.base.id, crtc->base.name,
-			    dbuf_state->slices[pipe], dbuf_state->ddb[pipe].start,
-			    dbuf_state->ddb[pipe].end, dbuf_state->active_pipes,
-			    str_yes_no(dbuf_state->joined_mbus));
-	}
-
-	dbuf_state->enabled_slices = dev_priv->display.dbuf.enabled_slices;
-}
-
-static bool skl_dbuf_is_misconfigured(struct drm_i915_private *i915)
-{
-	const struct intel_dbuf_state *dbuf_state =
-		to_intel_dbuf_state(i915->display.dbuf.obj.state);
-	struct skl_ddb_entry entries[I915_MAX_PIPES] = {};
-	struct intel_crtc *crtc;
-
-	for_each_intel_crtc(&i915->drm, crtc) {
-		const struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-
-		entries[crtc->pipe] = crtc_state->wm.skl.ddb;
-	}
-
-	for_each_intel_crtc(&i915->drm, crtc) {
-		const struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-		u8 slices;
-
-		slices = skl_compute_dbuf_slices(crtc, dbuf_state->active_pipes,
-						 dbuf_state->joined_mbus);
-		if (dbuf_state->slices[crtc->pipe] & ~slices)
-			return true;
-
-		if (skl_ddb_allocation_overlaps(&crtc_state->wm.skl.ddb, entries,
-						I915_MAX_PIPES, crtc->pipe))
-			return true;
-	}
-
-	return false;
-}
-
-void skl_wm_sanitize(struct drm_i915_private *i915)
-{
-	struct intel_crtc *crtc;
-
-	/*
-	 * On TGL/RKL (at least) the BIOS likes to assign the planes
-	 * to the wrong DBUF slices. This will cause an infinite loop
-	 * in skl_commit_modeset_enables() as it can't find a way to
-	 * transition between the old bogus DBUF layout to the new
-	 * proper DBUF layout without DBUF allocation overlaps between
-	 * the planes (which cannot be allowed or else the hardware
-	 * may hang). If we detect a bogus DBUF layout just turn off
-	 * all the planes so that skl_commit_modeset_enables() can
-	 * simply ignore them.
-	 */
-	if (!skl_dbuf_is_misconfigured(i915))
-		return;
-
-	drm_dbg_kms(&i915->drm, "BIOS has misprogrammed the DBUF, disabling all planes\n");
-
-	for_each_intel_crtc(&i915->drm, crtc) {
-		struct intel_plane *plane = to_intel_plane(crtc->base.primary);
-		const struct intel_plane_state *plane_state =
-			to_intel_plane_state(plane->base.state);
-		struct intel_crtc_state *crtc_state =
-			to_intel_crtc_state(crtc->base.state);
-
-		if (plane_state->uapi.visible)
-			intel_plane_disable_noatomic(crtc, plane);
-
-		drm_WARN_ON(&i915->drm, crtc_state->active_planes != 0);
-
-		memset(&crtc_state->wm.skl.ddb, 0, sizeof(crtc_state->wm.skl.ddb));
-	}
-}
-
-static void ilk_pipe_wm_get_hw_state(struct intel_crtc *crtc)
-{
-	struct drm_device *dev = crtc->base.dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct ilk_wm_values *hw = &dev_priv->display.wm.hw;
-	struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
-	struct intel_pipe_wm *active = &crtc_state->wm.ilk.optimal;
-	enum pipe pipe = crtc->pipe;
-
-	hw->wm_pipe[pipe] = intel_uncore_read(&dev_priv->uncore, WM0_PIPE_ILK(pipe));
-
-	memset(active, 0, sizeof(*active));
-
-	active->pipe_enabled = crtc->active;
-
-	if (active->pipe_enabled) {
-		u32 tmp = hw->wm_pipe[pipe];
-
-		/*
-		 * For active pipes LP0 watermark is marked as
-		 * enabled, and LP1+ watermaks as disabled since
-		 * we can't really reverse compute them in case
-		 * multiple pipes are active.
-		 */
-		active->wm[0].enable = true;
-		active->wm[0].pri_val = REG_FIELD_GET(WM0_PIPE_PRIMARY_MASK, tmp);
-		active->wm[0].spr_val = REG_FIELD_GET(WM0_PIPE_SPRITE_MASK, tmp);
-		active->wm[0].cur_val = REG_FIELD_GET(WM0_PIPE_CURSOR_MASK, tmp);
-	} else {
-		int level, max_level = ilk_wm_max_level(dev_priv);
-
-		/*
-		 * For inactive pipes, all watermark levels
-		 * should be marked as enabled but zeroed,
-		 * which is what we'd compute them to.
-		 */
-		for (level = 0; level <= max_level; level++)
-			active->wm[level].enable = true;
-	}
-
-	crtc->wm.active.ilk = *active;
-}
-
-#define _FW_WM(value, plane) \
-	(((value) & DSPFW_ ## plane ## _MASK) >> DSPFW_ ## plane ## _SHIFT)
-#define _FW_WM_VLV(value, plane) \
-	(((value) & DSPFW_ ## plane ## _MASK_VLV) >> DSPFW_ ## plane ## _SHIFT)
-
-static void g4x_read_wm_values(struct drm_i915_private *dev_priv,
-			       struct g4x_wm_values *wm)
-{
-	u32 tmp;
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1);
-	wm->sr.plane = _FW_WM(tmp, SR);
-	wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB);
-	wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEB);
-	wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM(tmp, PLANEA);
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2);
-	wm->fbc_en = tmp & DSPFW_FBC_SR_EN;
-	wm->sr.fbc = _FW_WM(tmp, FBC_SR);
-	wm->hpll.fbc = _FW_WM(tmp, FBC_HPLL_SR);
-	wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEB);
-	wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA);
-	wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM(tmp, SPRITEA);
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3);
-	wm->hpll_en = tmp & DSPFW_HPLL_SR_EN;
-	wm->sr.cursor = _FW_WM(tmp, CURSOR_SR);
-	wm->hpll.cursor = _FW_WM(tmp, HPLL_CURSOR);
-	wm->hpll.plane = _FW_WM(tmp, HPLL_SR);
-}
-
-static void vlv_read_wm_values(struct drm_i915_private *dev_priv,
-			       struct vlv_wm_values *wm)
-{
-	enum pipe pipe;
-	u32 tmp;
-
-	for_each_pipe(dev_priv, pipe) {
-		tmp = intel_uncore_read(&dev_priv->uncore, VLV_DDL(pipe));
-
-		wm->ddl[pipe].plane[PLANE_PRIMARY] =
-			(tmp >> DDL_PLANE_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
-		wm->ddl[pipe].plane[PLANE_CURSOR] =
-			(tmp >> DDL_CURSOR_SHIFT) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
-		wm->ddl[pipe].plane[PLANE_SPRITE0] =
-			(tmp >> DDL_SPRITE_SHIFT(0)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
-		wm->ddl[pipe].plane[PLANE_SPRITE1] =
-			(tmp >> DDL_SPRITE_SHIFT(1)) & (DDL_PRECISION_HIGH | DRAIN_LATENCY_MASK);
-	}
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW1);
-	wm->sr.plane = _FW_WM(tmp, SR);
-	wm->pipe[PIPE_B].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORB);
-	wm->pipe[PIPE_B].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEB);
-	wm->pipe[PIPE_A].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEA);
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW2);
-	wm->pipe[PIPE_A].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEB);
-	wm->pipe[PIPE_A].plane[PLANE_CURSOR] = _FW_WM(tmp, CURSORA);
-	wm->pipe[PIPE_A].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEA);
-
-	tmp = intel_uncore_read(&dev_priv->uncore, DSPFW3);
-	wm->sr.cursor = _FW_WM(tmp, CURSOR_SR);
-
-	if (IS_CHERRYVIEW(dev_priv)) {
-		tmp = intel_uncore_read(&dev_priv->uncore, DSPFW7_CHV);
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITED);
-		wm->pipe[PIPE_B].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEC);
-
-		tmp = intel_uncore_read(&dev_priv->uncore, DSPFW8_CHV);
-		wm->pipe[PIPE_C].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEF);
-		wm->pipe[PIPE_C].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEE);
+		tmp = intel_uncore_read(&dev_priv->uncore, DSPFW8_CHV);
+		wm->pipe[PIPE_C].plane[PLANE_SPRITE1] = _FW_WM_VLV(tmp, SPRITEF);
+		wm->pipe[PIPE_C].plane[PLANE_SPRITE0] = _FW_WM_VLV(tmp, SPRITEE);
 
 		tmp = intel_uncore_read(&dev_priv->uncore, DSPFW9_CHV);
 		wm->pipe[PIPE_C].plane[PLANE_PRIMARY] = _FW_WM_VLV(tmp, PLANEC);
@@ -7214,168 +4098,6 @@ void ilk_wm_get_hw_state(struct drm_i915_private *dev_priv)
 		!(intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) & DISP_FBC_WM_DIS);
 }
 
-void intel_wm_state_verify(struct intel_crtc *crtc,
-			   struct intel_crtc_state *new_crtc_state)
-{
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	struct skl_hw_state {
-		struct skl_ddb_entry ddb[I915_MAX_PLANES];
-		struct skl_ddb_entry ddb_y[I915_MAX_PLANES];
-		struct skl_pipe_wm wm;
-	} *hw;
-	const struct skl_pipe_wm *sw_wm = &new_crtc_state->wm.skl.optimal;
-	int level, max_level = ilk_wm_max_level(dev_priv);
-	struct intel_plane *plane;
-	u8 hw_enabled_slices;
-
-	if (DISPLAY_VER(dev_priv) < 9 || !new_crtc_state->hw.active)
-		return;
-
-	hw = kzalloc(sizeof(*hw), GFP_KERNEL);
-	if (!hw)
-		return;
-
-	skl_pipe_wm_get_hw_state(crtc, &hw->wm);
-
-	skl_pipe_ddb_get_hw_state(crtc, hw->ddb, hw->ddb_y);
-
-	hw_enabled_slices = intel_enabled_dbuf_slices_mask(dev_priv);
-
-	if (DISPLAY_VER(dev_priv) >= 11 &&
-	    hw_enabled_slices != dev_priv->display.dbuf.enabled_slices)
-		drm_err(&dev_priv->drm,
-			"mismatch in DBUF Slices (expected 0x%x, got 0x%x)\n",
-			dev_priv->display.dbuf.enabled_slices,
-			hw_enabled_slices);
-
-	for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
-		const struct skl_ddb_entry *hw_ddb_entry, *sw_ddb_entry;
-		const struct skl_wm_level *hw_wm_level, *sw_wm_level;
-
-		/* Watermarks */
-		for (level = 0; level <= max_level; level++) {
-			hw_wm_level = &hw->wm.planes[plane->id].wm[level];
-			sw_wm_level = skl_plane_wm_level(sw_wm, plane->id, level);
-
-			if (skl_wm_level_equals(hw_wm_level, sw_wm_level))
-				continue;
-
-			drm_err(&dev_priv->drm,
-				"[PLANE:%d:%s] mismatch in WM%d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
-				plane->base.base.id, plane->base.name, level,
-				sw_wm_level->enable,
-				sw_wm_level->blocks,
-				sw_wm_level->lines,
-				hw_wm_level->enable,
-				hw_wm_level->blocks,
-				hw_wm_level->lines);
-		}
-
-		hw_wm_level = &hw->wm.planes[plane->id].trans_wm;
-		sw_wm_level = skl_plane_trans_wm(sw_wm, plane->id);
-
-		if (!skl_wm_level_equals(hw_wm_level, sw_wm_level)) {
-			drm_err(&dev_priv->drm,
-				"[PLANE:%d:%s] mismatch in trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
-				plane->base.base.id, plane->base.name,
-				sw_wm_level->enable,
-				sw_wm_level->blocks,
-				sw_wm_level->lines,
-				hw_wm_level->enable,
-				hw_wm_level->blocks,
-				hw_wm_level->lines);
-		}
-
-		hw_wm_level = &hw->wm.planes[plane->id].sagv.wm0;
-		sw_wm_level = &sw_wm->planes[plane->id].sagv.wm0;
-
-		if (HAS_HW_SAGV_WM(dev_priv) &&
-		    !skl_wm_level_equals(hw_wm_level, sw_wm_level)) {
-			drm_err(&dev_priv->drm,
-				"[PLANE:%d:%s] mismatch in SAGV WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
-				plane->base.base.id, plane->base.name,
-				sw_wm_level->enable,
-				sw_wm_level->blocks,
-				sw_wm_level->lines,
-				hw_wm_level->enable,
-				hw_wm_level->blocks,
-				hw_wm_level->lines);
-		}
-
-		hw_wm_level = &hw->wm.planes[plane->id].sagv.trans_wm;
-		sw_wm_level = &sw_wm->planes[plane->id].sagv.trans_wm;
-
-		if (HAS_HW_SAGV_WM(dev_priv) &&
-		    !skl_wm_level_equals(hw_wm_level, sw_wm_level)) {
-			drm_err(&dev_priv->drm,
-				"[PLANE:%d:%s] mismatch in SAGV trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
-				plane->base.base.id, plane->base.name,
-				sw_wm_level->enable,
-				sw_wm_level->blocks,
-				sw_wm_level->lines,
-				hw_wm_level->enable,
-				hw_wm_level->blocks,
-				hw_wm_level->lines);
-		}
-
-		/* DDB */
-		hw_ddb_entry = &hw->ddb[PLANE_CURSOR];
-		sw_ddb_entry = &new_crtc_state->wm.skl.plane_ddb[PLANE_CURSOR];
-
-		if (!skl_ddb_entry_equal(hw_ddb_entry, sw_ddb_entry)) {
-			drm_err(&dev_priv->drm,
-				"[PLANE:%d:%s] mismatch in DDB (expected (%u,%u), found (%u,%u))\n",
-				plane->base.base.id, plane->base.name,
-				sw_ddb_entry->start, sw_ddb_entry->end,
-				hw_ddb_entry->start, hw_ddb_entry->end);
-		}
-	}
-
-	kfree(hw);
-}
-
-void intel_enable_ipc(struct drm_i915_private *dev_priv)
-{
-	u32 val;
-
-	if (!HAS_IPC(dev_priv))
-		return;
-
-	val = intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL2);
-
-	if (dev_priv->ipc_enabled)
-		val |= DISP_IPC_ENABLE;
-	else
-		val &= ~DISP_IPC_ENABLE;
-
-	intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL2, val);
-}
-
-static bool intel_can_enable_ipc(struct drm_i915_private *dev_priv)
-{
-	/* Display WA #0477 WaDisableIPC: skl */
-	if (IS_SKYLAKE(dev_priv))
-		return false;
-
-	/* Display WA #1141: SKL:all KBL:all CFL */
-	if (IS_KABYLAKE(dev_priv) ||
-	    IS_COFFEELAKE(dev_priv) ||
-	    IS_COMETLAKE(dev_priv))
-		return dev_priv->dram_info.symmetric_memory;
-
-	return true;
-}
-
-void intel_init_ipc(struct drm_i915_private *dev_priv)
-{
-	if (!HAS_IPC(dev_priv))
-		return;
-
-	dev_priv->ipc_enabled = intel_can_enable_ipc(dev_priv);
-
-	intel_enable_ipc(dev_priv);
-}
-
 static void ibx_init_clock_gating(struct drm_i915_private *dev_priv)
 {
 	/*
@@ -8216,10 +4938,6 @@ void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv)
 	}
 }
 
-static const struct intel_wm_funcs skl_wm_funcs = {
-	.compute_global_watermarks = skl_compute_wm,
-};
-
 static const struct intel_wm_funcs ilk_wm_funcs = {
 	.compute_pipe_wm = ilk_compute_pipe_wm,
 	.compute_intermediate_wm = ilk_compute_intermediate_wm,
@@ -8264,19 +4982,19 @@ static const struct intel_wm_funcs nop_funcs = {
 /* Set up chip specific power management-related functions */
 void intel_init_pm(struct drm_i915_private *dev_priv)
 {
+	if (DISPLAY_VER(dev_priv) >= 9) {
+		skl_wm_init(dev_priv);
+		return;
+	}
+
 	/* For cxsr */
 	if (IS_PINEVIEW(dev_priv))
 		pnv_get_mem_freq(dev_priv);
 	else if (GRAPHICS_VER(dev_priv) == 5)
 		ilk_get_mem_freq(dev_priv);
 
-	intel_sagv_init(dev_priv);
-
 	/* For FIFO watermark updates */
-	if (DISPLAY_VER(dev_priv) >= 9) {
-		skl_setup_wm_latency(dev_priv);
-		dev_priv->display.funcs.wm = &skl_wm_funcs;
-	} else if (HAS_PCH_SPLIT(dev_priv)) {
+	if (HAS_PCH_SPLIT(dev_priv)) {
 		ilk_setup_wm_latency(dev_priv);
 
 		if ((DISPLAY_VER(dev_priv) == 5 && dev_priv->display.wm.pri_latency[1] &&
@@ -8333,183 +5051,3 @@ void intel_pm_setup(struct drm_i915_private *dev_priv)
 	dev_priv->runtime_pm.suspended = false;
 	atomic_set(&dev_priv->runtime_pm.wakeref_count, 0);
 }
-
-static struct intel_global_state *intel_dbuf_duplicate_state(struct intel_global_obj *obj)
-{
-	struct intel_dbuf_state *dbuf_state;
-
-	dbuf_state = kmemdup(obj->state, sizeof(*dbuf_state), GFP_KERNEL);
-	if (!dbuf_state)
-		return NULL;
-
-	return &dbuf_state->base;
-}
-
-static void intel_dbuf_destroy_state(struct intel_global_obj *obj,
-				     struct intel_global_state *state)
-{
-	kfree(state);
-}
-
-static const struct intel_global_state_funcs intel_dbuf_funcs = {
-	.atomic_duplicate_state = intel_dbuf_duplicate_state,
-	.atomic_destroy_state = intel_dbuf_destroy_state,
-};
-
-struct intel_dbuf_state *
-intel_atomic_get_dbuf_state(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	struct intel_global_state *dbuf_state;
-
-	dbuf_state = intel_atomic_get_global_obj_state(state, &dev_priv->display.dbuf.obj);
-	if (IS_ERR(dbuf_state))
-		return ERR_CAST(dbuf_state);
-
-	return to_intel_dbuf_state(dbuf_state);
-}
-
-int intel_dbuf_init(struct drm_i915_private *dev_priv)
-{
-	struct intel_dbuf_state *dbuf_state;
-
-	dbuf_state = kzalloc(sizeof(*dbuf_state), GFP_KERNEL);
-	if (!dbuf_state)
-		return -ENOMEM;
-
-	intel_atomic_global_obj_init(dev_priv, &dev_priv->display.dbuf.obj,
-				     &dbuf_state->base, &intel_dbuf_funcs);
-
-	return 0;
-}
-
-/*
- * Configure MBUS_CTL and all DBUF_CTL_S of each slice to join_mbus state before
- * update the request state of all DBUS slices.
- */
-static void update_mbus_pre_enable(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	u32 mbus_ctl, dbuf_min_tracker_val;
-	enum dbuf_slice slice;
-	const struct intel_dbuf_state *dbuf_state =
-		intel_atomic_get_new_dbuf_state(state);
-
-	if (!HAS_MBUS_JOINING(dev_priv))
-		return;
-
-	/*
-	 * TODO: Implement vblank synchronized MBUS joining changes.
-	 * Must be properly coordinated with dbuf reprogramming.
-	 */
-	if (dbuf_state->joined_mbus) {
-		mbus_ctl = MBUS_HASHING_MODE_1x4 | MBUS_JOIN |
-			MBUS_JOIN_PIPE_SELECT_NONE;
-		dbuf_min_tracker_val = DBUF_MIN_TRACKER_STATE_SERVICE(3);
-	} else {
-		mbus_ctl = MBUS_HASHING_MODE_2x2 |
-			MBUS_JOIN_PIPE_SELECT_NONE;
-		dbuf_min_tracker_val = DBUF_MIN_TRACKER_STATE_SERVICE(1);
-	}
-
-	intel_de_rmw(dev_priv, MBUS_CTL,
-		     MBUS_HASHING_MODE_MASK | MBUS_JOIN |
-		     MBUS_JOIN_PIPE_SELECT_MASK, mbus_ctl);
-
-	for_each_dbuf_slice(dev_priv, slice)
-		intel_de_rmw(dev_priv, DBUF_CTL_S(slice),
-			     DBUF_MIN_TRACKER_STATE_SERVICE_MASK,
-			     dbuf_min_tracker_val);
-}
-
-void intel_dbuf_pre_plane_update(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	const struct intel_dbuf_state *new_dbuf_state =
-		intel_atomic_get_new_dbuf_state(state);
-	const struct intel_dbuf_state *old_dbuf_state =
-		intel_atomic_get_old_dbuf_state(state);
-
-	if (!new_dbuf_state ||
-	    ((new_dbuf_state->enabled_slices == old_dbuf_state->enabled_slices)
-	    && (new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus)))
-		return;
-
-	WARN_ON(!new_dbuf_state->base.changed);
-
-	update_mbus_pre_enable(state);
-	gen9_dbuf_slices_update(dev_priv,
-				old_dbuf_state->enabled_slices |
-				new_dbuf_state->enabled_slices);
-}
-
-void intel_dbuf_post_plane_update(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	const struct intel_dbuf_state *new_dbuf_state =
-		intel_atomic_get_new_dbuf_state(state);
-	const struct intel_dbuf_state *old_dbuf_state =
-		intel_atomic_get_old_dbuf_state(state);
-
-	if (!new_dbuf_state ||
-	    ((new_dbuf_state->enabled_slices == old_dbuf_state->enabled_slices)
-	    && (new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus)))
-		return;
-
-	WARN_ON(!new_dbuf_state->base.changed);
-
-	gen9_dbuf_slices_update(dev_priv,
-				new_dbuf_state->enabled_slices);
-}
-
-void intel_mbus_dbox_update(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
-	const struct intel_dbuf_state *new_dbuf_state, *old_dbuf_state;
-	const struct intel_crtc_state *new_crtc_state;
-	const struct intel_crtc *crtc;
-	u32 val = 0;
-	int i;
-
-	if (DISPLAY_VER(i915) < 11)
-		return;
-
-	new_dbuf_state = intel_atomic_get_new_dbuf_state(state);
-	old_dbuf_state = intel_atomic_get_old_dbuf_state(state);
-	if (!new_dbuf_state ||
-	    (new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus &&
-	     new_dbuf_state->active_pipes == old_dbuf_state->active_pipes))
-		return;
-
-	if (DISPLAY_VER(i915) >= 12) {
-		val |= MBUS_DBOX_B2B_TRANSACTIONS_MAX(16);
-		val |= MBUS_DBOX_B2B_TRANSACTIONS_DELAY(1);
-		val |= MBUS_DBOX_REGULATE_B2B_TRANSACTIONS_EN;
-	}
-
-	/* Wa_22010947358:adl-p */
-	if (IS_ALDERLAKE_P(i915))
-		val |= new_dbuf_state->joined_mbus ? MBUS_DBOX_A_CREDIT(6) :
-						     MBUS_DBOX_A_CREDIT(4);
-	else
-		val |= MBUS_DBOX_A_CREDIT(2);
-
-	if (IS_ALDERLAKE_P(i915)) {
-		val |= MBUS_DBOX_BW_CREDIT(2);
-		val |= MBUS_DBOX_B_CREDIT(8);
-	} else if (DISPLAY_VER(i915) >= 12) {
-		val |= MBUS_DBOX_BW_CREDIT(2);
-		val |= MBUS_DBOX_B_CREDIT(12);
-	} else {
-		val |= MBUS_DBOX_BW_CREDIT(1);
-		val |= MBUS_DBOX_B_CREDIT(8);
-	}
-
-	for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
-		if (!new_crtc_state->hw.active ||
-		    !intel_crtc_needs_modeset(new_crtc_state))
-			continue;
-
-		intel_de_write(i915, PIPE_MBUS_DBOX_CTL(crtc->pipe), val);
-	}
-}
diff --git a/drivers/gpu/drm/i915/intel_pm.h b/drivers/gpu/drm/i915/intel_pm.h
index 3ee71831d1a4..c09b872d65c8 100644
--- a/drivers/gpu/drm/i915/intel_pm.h
+++ b/drivers/gpu/drm/i915/intel_pm.h
@@ -8,22 +8,9 @@
 
 #include <linux/types.h>
 
-#include "display/intel_display.h"
-#include "display/intel_global_state.h"
-
-#include "i915_drv.h"
-
-struct drm_device;
 struct drm_i915_private;
-struct i915_request;
-struct intel_atomic_state;
-struct intel_bw_state;
-struct intel_crtc;
 struct intel_crtc_state;
-struct intel_plane;
-struct skl_ddb_entry;
-struct skl_pipe_wm;
-struct skl_wm_level;
+struct intel_plane_state;
 
 void intel_init_clock_gating(struct drm_i915_private *dev_priv);
 void intel_suspend_hw(struct drm_i915_private *dev_priv);
@@ -34,56 +21,14 @@ void intel_pm_setup(struct drm_i915_private *dev_priv);
 void g4x_wm_get_hw_state(struct drm_i915_private *dev_priv);
 void vlv_wm_get_hw_state(struct drm_i915_private *dev_priv);
 void ilk_wm_get_hw_state(struct drm_i915_private *dev_priv);
-void skl_wm_get_hw_state(struct drm_i915_private *dev_priv);
-void intel_wm_state_verify(struct intel_crtc *crtc,
-			   struct intel_crtc_state *new_crtc_state);
-u8 intel_enabled_dbuf_slices_mask(struct drm_i915_private *dev_priv);
-void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv);
-u32 skl_ddb_dbuf_slice_mask(struct drm_i915_private *dev_priv,
-			    const struct skl_ddb_entry *entry);
 void g4x_wm_sanitize(struct drm_i915_private *dev_priv);
 void vlv_wm_sanitize(struct drm_i915_private *dev_priv);
-void skl_wm_sanitize(struct drm_i915_private *dev_priv);
-bool intel_can_enable_sagv(struct drm_i915_private *dev_priv,
-			   const struct intel_bw_state *bw_state);
-void intel_sagv_pre_plane_update(struct intel_atomic_state *state);
-void intel_sagv_post_plane_update(struct intel_atomic_state *state);
-bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry *ddb,
-				 const struct skl_ddb_entry *entries,
-				 int num_entries, int ignore_idx);
-void skl_write_plane_wm(struct intel_plane *plane,
-			const struct intel_crtc_state *crtc_state);
-void skl_write_cursor_wm(struct intel_plane *plane,
-			 const struct intel_crtc_state *crtc_state);
 bool ilk_disable_lp_wm(struct drm_i915_private *dev_priv);
-void intel_init_ipc(struct drm_i915_private *dev_priv);
-void intel_enable_ipc(struct drm_i915_private *dev_priv);
+bool intel_wm_plane_visible(const struct intel_crtc_state *crtc_state,
+			    const struct intel_plane_state *plane_state);
+void intel_print_wm_latency(struct drm_i915_private *dev_priv,
+			    const char *name, const u16 wm[]);
 
 bool intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable);
 
-struct intel_dbuf_state {
-	struct intel_global_state base;
-
-	struct skl_ddb_entry ddb[I915_MAX_PIPES];
-	unsigned int weight[I915_MAX_PIPES];
-	u8 slices[I915_MAX_PIPES];
-	u8 enabled_slices;
-	u8 active_pipes;
-	bool joined_mbus;
-};
-
-struct intel_dbuf_state *
-intel_atomic_get_dbuf_state(struct intel_atomic_state *state);
-
-#define to_intel_dbuf_state(x) container_of((x), struct intel_dbuf_state, base)
-#define intel_atomic_get_old_dbuf_state(state) \
-	to_intel_dbuf_state(intel_atomic_get_old_global_obj_state(state, &to_i915(state->base.dev)->display.dbuf.obj))
-#define intel_atomic_get_new_dbuf_state(state) \
-	to_intel_dbuf_state(intel_atomic_get_new_global_obj_state(state, &to_i915(state->base.dev)->display.dbuf.obj))
-
-int intel_dbuf_init(struct drm_i915_private *dev_priv);
-void intel_dbuf_pre_plane_update(struct intel_atomic_state *state);
-void intel_dbuf_post_plane_update(struct intel_atomic_state *state);
-void intel_mbus_dbox_update(struct intel_atomic_state *state);
-
 #endif /* __INTEL_PM_H__ */
-- 
cgit v1.2.3


From 23fbdb07d6a729dd6a1df8e0cdd5772a5935c053 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 12 Sep 2022 14:45:12 +0300
Subject: drm/i915/ipc: refactor and rename IPC functions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Rename the IPC functions to have skl_watermark_ipc_ prefix, rename
enable to update to reflect what the function actually does, and add
enabled function to abstract direct ->ipc_enabled access for state
query.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/536237d5bc919e8c97a96796f235f5bb264ceff2.1662983005.git.jani.nikula@intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c       |  6 +++---
 .../gpu/drm/i915/display/intel_display_debugfs.c   |  6 +++---
 drivers/gpu/drm/i915/display/skl_watermark.c       | 25 ++++++++++++----------
 drivers/gpu/drm/i915/display/skl_watermark.h       |  5 +++--
 drivers/gpu/drm/i915/i915_driver.c                 |  2 +-
 5 files changed, 24 insertions(+), 20 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 7abb82859ed0..e1eb63151d67 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4779,7 +4779,7 @@ static u16 skl_linetime_wm(const struct intel_crtc_state *crtc_state)
 
 	/* Display WA #1135: BXT:ALL GLK:ALL */
 	if ((IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) &&
-	    dev_priv->ipc_enabled)
+	    skl_watermark_ipc_enabled(dev_priv))
 		linetime_wm /= 2;
 
 	return min(linetime_wm, 0x1ff);
@@ -8782,7 +8782,7 @@ int intel_modeset_init(struct drm_i915_private *i915)
 	intel_hpd_init(i915);
 	intel_hpd_poll_disable(i915);
 
-	intel_init_ipc(i915);
+	skl_watermark_ipc_init(i915);
 
 	return 0;
 }
@@ -8913,7 +8913,7 @@ void intel_display_resume(struct drm_device *dev)
 	if (!ret)
 		ret = __intel_display_resume(i915, state, &ctx);
 
-	intel_enable_ipc(i915);
+	skl_watermark_ipc_update(i915);
 	drm_modeset_drop_locks(&ctx);
 	drm_modeset_acquire_fini(&ctx);
 
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
index fe40e2a226d6..d2139cf4f825 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -988,7 +988,7 @@ static int i915_ipc_status_show(struct seq_file *m, void *data)
 	struct drm_i915_private *dev_priv = m->private;
 
 	seq_printf(m, "Isochronous Priority Control: %s\n",
-			str_yes_no(dev_priv->ipc_enabled));
+		   str_yes_no(skl_watermark_ipc_enabled(dev_priv)));
 	return 0;
 }
 
@@ -1016,11 +1016,11 @@ static ssize_t i915_ipc_status_write(struct file *file, const char __user *ubuf,
 		return ret;
 
 	with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref) {
-		if (!dev_priv->ipc_enabled && enable)
+		if (!skl_watermark_ipc_enabled(dev_priv) && enable)
 			drm_info(&dev_priv->drm,
 				 "Enabling IPC: WM will be proper only after next commit\n");
 		dev_priv->ipc_enabled = enable;
-		intel_enable_ipc(dev_priv);
+		skl_watermark_ipc_update(dev_priv);
 	}
 
 	return len;
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index f773efe24e3e..5a6d2122b7a1 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -1843,10 +1843,8 @@ static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
 	 * WaIncreaseLatencyIPCEnabled: kbl,cfl
 	 * Display WA #1141: kbl,cfl
 	 */
-	if ((IS_KABYLAKE(i915) ||
-	     IS_COFFEELAKE(i915) ||
-	     IS_COMETLAKE(i915)) &&
-	    i915->ipc_enabled)
+	if ((IS_KABYLAKE(i915) || IS_COFFEELAKE(i915) || IS_COMETLAKE(i915)) &&
+	    skl_watermark_ipc_enabled(i915))
 		latency += 4;
 
 	if (skl_needs_memory_bw_wa(i915) && wp->x_tiled)
@@ -2014,7 +2012,7 @@ static void skl_compute_transition_wm(struct drm_i915_private *i915,
 	u16 wm0_blocks, trans_offset, blocks;
 
 	/* Transition WM don't make any sense if ipc is disabled */
-	if (!i915->ipc_enabled)
+	if (!skl_watermark_ipc_enabled(i915))
 		return;
 
 	/*
@@ -3122,7 +3120,12 @@ void intel_wm_state_verify(struct intel_crtc *crtc,
 	kfree(hw);
 }
 
-void intel_enable_ipc(struct drm_i915_private *i915)
+bool skl_watermark_ipc_enabled(struct drm_i915_private *i915)
+{
+	return i915->ipc_enabled;
+}
+
+void skl_watermark_ipc_update(struct drm_i915_private *i915)
 {
 	u32 val;
 
@@ -3131,7 +3134,7 @@ void intel_enable_ipc(struct drm_i915_private *i915)
 
 	val = intel_uncore_read(&i915->uncore, DISP_ARB_CTL2);
 
-	if (i915->ipc_enabled)
+	if (skl_watermark_ipc_enabled(i915))
 		val |= DISP_IPC_ENABLE;
 	else
 		val &= ~DISP_IPC_ENABLE;
@@ -3139,7 +3142,7 @@ void intel_enable_ipc(struct drm_i915_private *i915)
 	intel_uncore_write(&i915->uncore, DISP_ARB_CTL2, val);
 }
 
-static bool intel_can_enable_ipc(struct drm_i915_private *i915)
+static bool skl_watermark_ipc_can_enable(struct drm_i915_private *i915)
 {
 	/* Display WA #0477 WaDisableIPC: skl */
 	if (IS_SKYLAKE(i915))
@@ -3154,14 +3157,14 @@ static bool intel_can_enable_ipc(struct drm_i915_private *i915)
 	return true;
 }
 
-void intel_init_ipc(struct drm_i915_private *i915)
+void skl_watermark_ipc_init(struct drm_i915_private *i915)
 {
 	if (!HAS_IPC(i915))
 		return;
 
-	i915->ipc_enabled = intel_can_enable_ipc(i915);
+	i915->ipc_enabled = skl_watermark_ipc_can_enable(i915);
 
-	intel_enable_ipc(i915);
+	skl_watermark_ipc_update(i915);
 }
 
 static void
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.h b/drivers/gpu/drm/i915/display/skl_watermark.h
index 50da05932750..7e5adef0c510 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.h
+++ b/drivers/gpu/drm/i915/display/skl_watermark.h
@@ -44,8 +44,9 @@ void skl_wm_sanitize(struct drm_i915_private *i915);
 void intel_wm_state_verify(struct intel_crtc *crtc,
 			   struct intel_crtc_state *new_crtc_state);
 
-void intel_enable_ipc(struct drm_i915_private *i915);
-void intel_init_ipc(struct drm_i915_private *i915);
+void skl_watermark_ipc_init(struct drm_i915_private *i915);
+void skl_watermark_ipc_update(struct drm_i915_private *i915);
+bool skl_watermark_ipc_enabled(struct drm_i915_private *i915);
 
 void skl_wm_init(struct drm_i915_private *i915);
 
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index 8ab908512800..3e1d2a10e9da 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -1713,7 +1713,7 @@ static int intel_runtime_resume(struct device *kdev)
 		intel_hpd_poll_disable(dev_priv);
 	}
 
-	intel_enable_ipc(dev_priv);
+	skl_watermark_ipc_update(dev_priv);
 
 	enable_rpm_wakeref_asserts(rpm);
 
-- 
cgit v1.2.3


From 4aaa1a98331c9f9fd31f4b80b913c8f0c556c90a Mon Sep 17 00:00:00 2001
From: Madhumitha Tolakanahalli Pradeep
 <madhumitha.tolakanahalli.pradeep@intel.com>
Date: Tue, 13 Sep 2022 11:33:41 -0700
Subject: drm/i915/mtl: Update CHICKEN_TRANS* register addresses

In Display version 14, Transcoder Chicken Registers have updated address.
This patch performs checks to use the right register when required.

v2: Omit display version check in i915_reg.h(Jani)
v3:
 - Remove extra whitespace introduced
 - Fix reg definitions for MTL_CHICKEN_TRANS(MattR)

Bspec: 34387, 50054
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Madhumitha Tolakanahalli Pradeep <madhumitha.tolakanahalli.pradeep@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220913183341.908028-6-radhakrishna.sripada@intel.com
---
 drivers/gpu/drm/i915/display/intel_display.c | 13 ++++++++++---
 drivers/gpu/drm/i915/display/intel_dp_mst.c  |  5 ++++-
 drivers/gpu/drm/i915/i915_reg.h              |  7 +++++++
 3 files changed, 21 insertions(+), 4 deletions(-)

(limited to 'drivers/gpu/drm/i915/display/intel_display.c')

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index e1eb63151d67..de3b4fb5d0a5 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -620,7 +620,10 @@ void intel_disable_transcoder(const struct intel_crtc_state *old_crtc_state)
 	if (!IS_I830(dev_priv))
 		val &= ~PIPECONF_ENABLE;
 
-	if (DISPLAY_VER(dev_priv) >= 12)
+	if (DISPLAY_VER(dev_priv) >= 14)
+		intel_de_rmw(dev_priv, MTL_CHICKEN_TRANS(cpu_transcoder),
+			     FECSTALL_DIS_DPTSTREAM_DPTTG, 0);
+	else if (DISPLAY_VER(dev_priv) >= 12)
 		intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder),
 			     FECSTALL_DIS_DPTSTREAM_DPTTG, 0);
 
@@ -1840,7 +1843,9 @@ static void hsw_set_frame_start_delay(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	i915_reg_t reg = CHICKEN_TRANS(crtc_state->cpu_transcoder);
+	enum transcoder transcoder = crtc_state->cpu_transcoder;
+	i915_reg_t reg = DISPLAY_VER(dev_priv) >= 14 ? MTL_CHICKEN_TRANS(transcoder) :
+			 CHICKEN_TRANS(transcoder);
 	u32 val;
 
 	val = intel_de_read(dev_priv, reg);
@@ -4128,7 +4133,9 @@ static bool hsw_get_pipe_config(struct intel_crtc *crtc,
 	}
 
 	if (!transcoder_is_dsi(pipe_config->cpu_transcoder)) {
-		tmp = intel_de_read(dev_priv, CHICKEN_TRANS(pipe_config->cpu_transcoder));
+		tmp = intel_de_read(dev_priv, DISPLAY_VER(dev_priv) >= 14 ?
+				    MTL_CHICKEN_TRANS(pipe_config->cpu_transcoder) :
+				    CHICKEN_TRANS(pipe_config->cpu_transcoder));
 
 		pipe_config->framestart_delay = REG_FIELD_GET(HSW_FRAME_START_DELAY_MASK, tmp) + 1;
 	} else {
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 5adfd226d6c4..03604a37931c 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -565,7 +565,10 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state,
 	drm_dp_add_payload_part2(&intel_dp->mst_mgr, &state->base,
 				 drm_atomic_get_mst_payload_state(mst_state, connector->port));
 
-	if (DISPLAY_VER(dev_priv) >= 12 && pipe_config->fec_enable)
+	if (DISPLAY_VER(dev_priv) >= 14 && pipe_config->fec_enable)
+		intel_de_rmw(dev_priv, MTL_CHICKEN_TRANS(trans), 0,
+			     FECSTALL_DIS_DPTSTREAM_DPTTG);
+	else if (DISPLAY_VER(dev_priv) >= 12 && pipe_config->fec_enable)
 		intel_de_rmw(dev_priv, CHICKEN_TRANS(trans), 0,
 			     FECSTALL_DIS_DPTSTREAM_DPTTG);
 
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 7c46a9fd34f2..3053c175cf9b 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5728,6 +5728,13 @@
 					    [TRANSCODER_B] = _CHICKEN_TRANS_B, \
 					    [TRANSCODER_C] = _CHICKEN_TRANS_C, \
 					    [TRANSCODER_D] = _CHICKEN_TRANS_D))
+
+#define _MTL_CHICKEN_TRANS_A	0x604e0
+#define _MTL_CHICKEN_TRANS_B	0x614e0
+#define MTL_CHICKEN_TRANS(trans)	_MMIO_TRANS((trans), \
+						    _MTL_CHICKEN_TRANS_A, \
+						    _MTL_CHICKEN_TRANS_B)
+
 #define  HSW_FRAME_START_DELAY_MASK	REG_GENMASK(28, 27)
 #define  HSW_FRAME_START_DELAY(x)	REG_FIELD_PREP(HSW_FRAME_START_DELAY_MASK, x)
 #define  VSC_DATA_SEL_SOFTWARE_CONTROL	REG_BIT(25) /* GLK */
-- 
cgit v1.2.3