From c620e79bb695b866b2cefa0135f7eddd0d5bc9d7 Mon Sep 17 00:00:00 2001 From: Rodrigo Siqueira Date: Mon, 21 Feb 2022 15:22:50 -0500 Subject: drm/amd/display: Add some extra kernel doc to amdgpu_dm Reviewed-by: Harry Wentland Acked-by: Tom Chung Signed-off-by: Rodrigo Siqueira Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 16 ++++++-- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 46 ++++++++++++++++++++--- 2 files changed, 54 insertions(+), 8 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 5140d9c2bf3b..2412dc601ce2 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9321,6 +9321,7 @@ static int add_affected_mst_dsc_crtcs(struct drm_atomic_state *state, struct drm /** * amdgpu_dm_atomic_check() - Atomic check implementation for AMDgpu DM. + * * @dev: The DRM device * @state: The atomic state to commit * @@ -9935,8 +9936,18 @@ static int parse_hdmi_amd_vsdb(struct amdgpu_dm_connector *aconnector, return valid_vsdb_found ? i : -ENODEV; } +/** + * amdgpu_dm_update_freesync_caps - Update Freesync capabilities + * + * @aconnector: Connector to query. + * + * Amdgpu supports Freesync in DP and HDMI displays, and it is required to keep + * track of some of the display information in the internal data struct used by + * amdgpu_dm. This function checks which type of connector we need to set the + * FreeSync parameters. + */ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector, - struct edid *edid) + struct edid *edid) { int i = 0; struct detailed_timing *timing; @@ -9949,8 +9960,8 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector, struct drm_device *dev = connector->dev; struct amdgpu_device *adev = drm_to_adev(dev); - bool freesync_capable = false; struct amdgpu_hdmi_vsdb_info vsdb_info = {0}; + bool freesync_capable = false; if (!connector->state) { DRM_ERROR("%s - Connector has no state", __func__); @@ -9979,7 +9990,6 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector, if (!adev->dm.freesync_module) goto update; - if (sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT || sink->sink_signal == SIGNAL_TYPE_EDP) { bool edid_check_required = false; diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index 90b306a1dd68..b44faaad9b0b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -598,6 +598,10 @@ struct amdgpu_dm_connector { * The 'current' sink is in dc_link->sink. */ struct dc_sink *dc_sink; struct dc_link *dc_link; + + /** + * @dc_em_sink: Reference to the emulated (virtual) sink. + */ struct dc_sink *dc_em_sink; /* DM only */ @@ -610,7 +614,16 @@ struct amdgpu_dm_connector { struct amdgpu_i2c_adapter *i2c; /* Monitor range limits */ - int min_vfreq ; + /** + * @min_vfreq: Minimal frequency supported by the display in Hz. This + * value is set to zero when there is no FreeSync support. + */ + int min_vfreq; + + /** + * @max_vfreq: Maximum frequency supported by the display in Hz. This + * value is set to zero when there is no FreeSync support. + */ int max_vfreq ; int pixel_clock_mhz; @@ -705,11 +718,34 @@ struct dm_connector_state { uint64_t pbn; }; +/** + * struct amdgpu_hdmi_vsdb_info - Keep track of the VSDB info + * + * AMDGPU supports FreeSync over HDMI by using the VSDB section, and this + * struct is useful to keep track of the display-specific information about + * FreeSync. + */ struct amdgpu_hdmi_vsdb_info { - unsigned int amd_vsdb_version; /* VSDB version, should be used to determine which VSIF to send */ - bool freesync_supported; /* FreeSync Supported */ - unsigned int min_refresh_rate_hz; /* FreeSync Minimum Refresh Rate in Hz */ - unsigned int max_refresh_rate_hz; /* FreeSync Maximum Refresh Rate in Hz */ + /** + * @amd_vsdb_version: Vendor Specific Data Block Version, should be + * used to determine which Vendor Specific InfoFrame (VSIF) to send. + */ + unsigned int amd_vsdb_version; + + /** + * @freesync_supported: FreeSync Supported. + */ + bool freesync_supported; + + /** + * @min_refresh_rate_hz: FreeSync Minimum Refresh Rate in Hz. + */ + unsigned int min_refresh_rate_hz; + + /** + * @max_refresh_rate_hz: FreeSync Maximum Refresh Rate in Hz + */ + unsigned int max_refresh_rate_hz; }; -- cgit v1.2.3 From cdeec9a11c3c95f33a3e2be36ef3fabd60b8ebf2 Mon Sep 17 00:00:00 2001 From: Melissa Wen Date: Thu, 4 Aug 2022 14:01:04 -0100 Subject: Documentation/amdgpu_dm: Add DM color correction documentation AMDGPU DM maps DRM color management properties (degamma, ctm and gamma) to DC color correction entities. Part of this mapping is already documented as code comments and can be converted as kernel docs. v2: - rebase to amd-staging-drm-next - fix typos (Tales) - undo kernel-docs inside functions (Tales) Signed-off-by: Melissa Wen Reviewed-by: Harry Wentland Reviewed-by: Tales Aparecida Reviewed-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- .../gpu/amdgpu/display/display-manager.rst | 9 ++ .../drm/amd/display/amdgpu_dm/amdgpu_dm_color.c | 109 +++++++++++++++------ 2 files changed, 90 insertions(+), 28 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/Documentation/gpu/amdgpu/display/display-manager.rst b/Documentation/gpu/amdgpu/display/display-manager.rst index 7ce31f89d9a0..b1b0f11aed83 100644 --- a/Documentation/gpu/amdgpu/display/display-manager.rst +++ b/Documentation/gpu/amdgpu/display/display-manager.rst @@ -40,3 +40,12 @@ Atomic Implementation .. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c :functions: amdgpu_dm_atomic_check amdgpu_dm_atomic_commit_tail + +Color Management Properties +=========================== + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c + :doc: overview + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c + :internal: diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c index a71177305bcd..a4cb23d059bd 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c @@ -29,7 +29,9 @@ #include "modules/color/color_gamma.h" #include "basics/conversion.h" -/* +/** + * DOC: overview + * * The DC interface to HW gives us the following color management blocks * per pipe (surface): * @@ -71,8 +73,8 @@ #define MAX_DRM_LUT_VALUE 0xFFFF -/* - * Initialize the color module. +/** + * amdgpu_dm_init_color_mod - Initialize the color module. * * We're not using the full color module, only certain components. * Only call setup functions for components that we need. @@ -82,7 +84,14 @@ void amdgpu_dm_init_color_mod(void) setup_x_points_distribution(); } -/* Extracts the DRM lut and lut size from a blob. */ +/** + * __extract_blob_lut - Extracts the DRM lut and lut size from a blob. + * @blob: DRM color mgmt property blob + * @size: lut size + * + * Returns: + * DRM LUT or NULL + */ static const struct drm_color_lut * __extract_blob_lut(const struct drm_property_blob *blob, uint32_t *size) { @@ -90,13 +99,18 @@ __extract_blob_lut(const struct drm_property_blob *blob, uint32_t *size) return blob ? (struct drm_color_lut *)blob->data : NULL; } -/* - * Return true if the given lut is a linear mapping of values, i.e. it acts - * like a bypass LUT. +/** + * __is_lut_linear - check if the given lut is a linear mapping of values + * @lut: given lut to check values + * @size: lut size * * It is considered linear if the lut represents: - * f(a) = (0xFF00/MAX_COLOR_LUT_ENTRIES-1)a; for integer a in - * [0, MAX_COLOR_LUT_ENTRIES) + * f(a) = (0xFF00/MAX_COLOR_LUT_ENTRIES-1)a; for integer a in [0, + * MAX_COLOR_LUT_ENTRIES) + * + * Returns: + * True if the given lut is a linear mapping of values, i.e. it acts like a + * bypass LUT. Otherwise, false. */ static bool __is_lut_linear(const struct drm_color_lut *lut, uint32_t size) { @@ -119,9 +133,13 @@ static bool __is_lut_linear(const struct drm_color_lut *lut, uint32_t size) return true; } -/* - * Convert the drm_color_lut to dc_gamma. The conversion depends on the size - * of the lut - whether or not it's legacy. +/** + * __drm_lut_to_dc_gamma - convert the drm_color_lut to dc_gamma. + * @lut: DRM lookup table for color conversion + * @gamma: DC gamma to set entries + * @is_legacy: legacy or atomic gamma + * + * The conversion depends on the size of the lut - whether or not it's legacy. */ static void __drm_lut_to_dc_gamma(const struct drm_color_lut *lut, struct dc_gamma *gamma, bool is_legacy) @@ -154,8 +172,11 @@ static void __drm_lut_to_dc_gamma(const struct drm_color_lut *lut, } } -/* - * Converts a DRM CTM to a DC CSC float matrix. +/** + * __drm_ctm_to_dc_matrix - converts a DRM CTM to a DC CSC float matrix + * @ctm: DRM color transformation matrix + * @matrix: DC CSC float matrix + * * The matrix needs to be a 3x4 (12 entry) matrix. */ static void __drm_ctm_to_dc_matrix(const struct drm_color_ctm *ctm, @@ -189,7 +210,18 @@ static void __drm_ctm_to_dc_matrix(const struct drm_color_ctm *ctm, } } -/* Calculates the legacy transfer function - only for sRGB input space. */ +/** + * __set_legacy_tf - Calculates the legacy transfer function + * @func: transfer function + * @lut: lookup table that defines the color space + * @lut_size: size of respective lut + * @has_rom: if ROM can be used for hardcoded curve + * + * Only for sRGB input space + * + * Returns: + * 0 in case of success, -ENOMEM if fails + */ static int __set_legacy_tf(struct dc_transfer_func *func, const struct drm_color_lut *lut, uint32_t lut_size, bool has_rom) @@ -218,7 +250,16 @@ static int __set_legacy_tf(struct dc_transfer_func *func, return res ? 0 : -ENOMEM; } -/* Calculates the output transfer function based on expected input space. */ +/** + * __set_output_tf - calculates the output transfer function based on expected input space. + * @func: transfer function + * @lut: lookup table that defines the color space + * @lut_size: size of respective lut + * @has_rom: if ROM can be used for hardcoded curve + * + * Returns: + * 0 in case of success. -ENOMEM if fails. + */ static int __set_output_tf(struct dc_transfer_func *func, const struct drm_color_lut *lut, uint32_t lut_size, bool has_rom) @@ -262,7 +303,16 @@ static int __set_output_tf(struct dc_transfer_func *func, return res ? 0 : -ENOMEM; } -/* Caculates the input transfer function based on expected input space. */ +/** + * __set_input_tf - calculates the input transfer function based on expected + * input space. + * @func: transfer function + * @lut: lookup table that defines the color space + * @lut_size: size of respective lut. + * + * Returns: + * 0 in case of success. -ENOMEM if fails. + */ static int __set_input_tf(struct dc_transfer_func *func, const struct drm_color_lut *lut, uint32_t lut_size) { @@ -285,13 +335,14 @@ static int __set_input_tf(struct dc_transfer_func *func, } /** - * amdgpu_dm_verify_lut_sizes + * amdgpu_dm_verify_lut_sizes - verifies if DRM luts match the hw supported sizes * @crtc_state: the DRM CRTC state * - * Verifies that the Degamma and Gamma LUTs attached to the |crtc_state| are of - * the expected size. + * Verifies that the Degamma and Gamma LUTs attached to the &crtc_state + * are of the expected size. * - * Returns 0 on success. + * Returns: + * 0 on success. -EINVAL if any lut sizes are invalid. */ int amdgpu_dm_verify_lut_sizes(const struct drm_crtc_state *crtc_state) { @@ -327,9 +378,9 @@ int amdgpu_dm_verify_lut_sizes(const struct drm_crtc_state *crtc_state) * of the HW blocks as long as the CRTC CTM always comes before the * CRTC RGM and after the CRTC DGM. * - * The CRTC RGM block will be placed in the RGM LUT block if it is non-linear. - * The CRTC DGM block will be placed in the DGM LUT block if it is non-linear. - * The CRTC CTM will be placed in the gamut remap block if it is non-linear. + * - The CRTC RGM block will be placed in the RGM LUT block if it is non-linear. + * - The CRTC DGM block will be placed in the DGM LUT block if it is non-linear. + * - The CRTC CTM will be placed in the gamut remap block if it is non-linear. * * The RGM block is typically more fully featured and accurate across * all ASICs - DCE can't support a custom non-linear CRTC DGM. @@ -338,7 +389,8 @@ int amdgpu_dm_verify_lut_sizes(const struct drm_crtc_state *crtc_state) * management at once we have to either restrict the usage of CRTC properties * or blend adjustments together. * - * Returns 0 on success. + * Returns: + * 0 on success. Error code if setup fails. */ int amdgpu_dm_update_crtc_color_mgmt(struct dm_crtc_state *crtc) { @@ -393,7 +445,7 @@ int amdgpu_dm_update_crtc_color_mgmt(struct dm_crtc_state *crtc) if (r) return r; } else if (has_regamma) { - /* CRTC RGM goes into RGM LUT. */ + /* If atomic regamma, CRTC RGM goes into RGM LUT. */ stream->out_transfer_func->type = TF_TYPE_DISTRIBUTED_POINTS; stream->out_transfer_func->tf = TRANSFER_FUNCTION_LINEAR; @@ -450,9 +502,10 @@ int amdgpu_dm_update_crtc_color_mgmt(struct dm_crtc_state *crtc) * * Update the underlying dc_stream_state's input transfer function (ITF) in * preparation for hardware commit. The transfer function used depends on - * the prepartion done on the stream for color management. + * the preparation done on the stream for color management. * - * Returns 0 on success. + * Returns: + * 0 on success. -ENOMEM if mem allocation fails. */ int amdgpu_dm_update_plane_color_mgmt(struct dm_crtc_state *crtc, struct dc_plane_state *dc_plane_state) -- cgit v1.2.3 From 8350bb59e63d0909b0d65af2d9710026e0f902ce Mon Sep 17 00:00:00 2001 From: Hamza Mahfooz Date: Thu, 21 Jul 2022 12:55:34 -0400 Subject: drm/amd/display: consider DSC pass-through during mode validation Add a mode validation routine for DSC pass-through. Both the link from source to hub, and the link from hub to monitor are checked, according to the current link training result and full pbn returned by enum path resource sideband message. Pick up the minimum value as the bandwidth bottleneck for the end to end link bandwidth constraint, and check if the maximum DSC decompression bandwidth can fit. v2: squash in DSC CONFIG_DRM_AMD_DC_DCN compilation fix (Hamza) Co-authored-by: Fangzhi Zuo Signed-off-by: Hamza Mahfooz Signed-off-by: Alex Deucher --- .../amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 84 ++++++++++++++++++++-- 1 file changed, 78 insertions(+), 6 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 2e74ccf7df5b..ce6929224a6e 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -36,6 +36,7 @@ #include "dm_helpers.h" #include "dc_link_ddc.h" +#include "dc_link_dp.h" #include "ddc_service_types.h" #include "dpcd_defs.h" @@ -1386,19 +1387,90 @@ clean_exit: return (ret == 0); } -#endif +static unsigned int kbps_from_pbn(unsigned int pbn) +{ + unsigned int kbps = pbn; + + kbps *= (1000000 / PEAK_FACTOR_X1000); + kbps *= 8; + kbps *= 54; + kbps /= 64; + + return kbps; +} + +static bool is_dsc_common_config_possible(struct dc_stream_state *stream, + struct dc_dsc_bw_range *bw_range) +{ + struct dc_dsc_policy dsc_policy = {0}; + + dc_dsc_get_policy_for_timing(&stream->timing, 0, &dsc_policy); + dc_dsc_compute_bandwidth_range(stream->sink->ctx->dc->res_pool->dscs[0], + stream->sink->ctx->dc->debug.dsc_min_slice_height_override, + dsc_policy.min_target_bpp * 16, + dsc_policy.max_target_bpp * 16, + &stream->sink->dsc_caps.dsc_dec_caps, + &stream->timing, bw_range); + + return bw_range->max_target_bpp_x16 && bw_range->min_target_bpp_x16; +} +#endif /* CONFIG_DRM_AMD_DC_DCN */ enum dc_status dm_dp_mst_is_port_support_mode( struct amdgpu_dm_connector *aconnector, struct dc_stream_state *stream) { int bpp, pbn, branch_max_throughput_mps = 0; +#if defined(CONFIG_DRM_AMD_DC_DCN) + struct dc_link_settings cur_link_settings; + unsigned int end_to_end_bw_in_kbps = 0; + unsigned int upper_link_bw_in_kbps = 0, down_link_bw_in_kbps = 0; + unsigned int max_compressed_bw_in_kbps = 0; + struct dc_dsc_bw_range bw_range = {0}; - /* check if mode could be supported within fUll_pbn */ - bpp = convert_dc_color_depth_into_bpc(stream->timing.display_color_depth) * 3; - pbn = drm_dp_calc_pbn_mode(stream->timing.pix_clk_100hz / 10, bpp, false); - if (pbn > aconnector->port->full_pbn) - return DC_FAIL_BANDWIDTH_VALIDATE; + /* + * check if the mode could be supported if DSC pass-through is supported + * AND check if there enough bandwidth available to support the mode + * with DSC enabled. + */ + if (is_dsc_common_config_possible(stream, &bw_range) && + aconnector->port->passthrough_aux) { + mutex_lock(&aconnector->mst_mgr.lock); + + cur_link_settings = stream->link->verified_link_cap; + + upper_link_bw_in_kbps = dc_link_bandwidth_kbps(aconnector->dc_link, + &cur_link_settings + ); + down_link_bw_in_kbps = kbps_from_pbn(aconnector->port->full_pbn); + + /* pick the bottleneck */ + end_to_end_bw_in_kbps = min(upper_link_bw_in_kbps, + down_link_bw_in_kbps); + + mutex_unlock(&aconnector->mst_mgr.lock); + + /* + * use the maximum dsc compression bandwidth as the required + * bandwidth for the mode + */ + max_compressed_bw_in_kbps = bw_range.min_kbps; + + if (end_to_end_bw_in_kbps < max_compressed_bw_in_kbps) { + DRM_DEBUG_DRIVER("Mode does not fit into DSC pass-through bandwidth validation\n"); + return DC_FAIL_BANDWIDTH_VALIDATE; + } + } else { +#endif + /* check if mode could be supported within full_pbn */ + bpp = convert_dc_color_depth_into_bpc(stream->timing.display_color_depth) * 3; + pbn = drm_dp_calc_pbn_mode(stream->timing.pix_clk_100hz / 10, bpp, false); + + if (pbn > aconnector->port->full_pbn) + return DC_FAIL_BANDWIDTH_VALIDATE; +#if defined(CONFIG_DRM_AMD_DC_DCN) + } +#endif /* check is mst dsc output bandwidth branch_overall_throughput_0_mps */ switch (stream->timing.pixel_encoding) { -- cgit v1.2.3 From a4d3230353e493d98263c5d7f03ee6403ed82d71 Mon Sep 17 00:00:00 2001 From: Hamza Mahfooz Date: Mon, 18 Jul 2022 16:50:45 -0400 Subject: drm/amd/display: implement DSC pass-through support Currently, we only attempt to setup DSC at the virtual DPCD port, however many modern displays come with DSC support and MST hubs can now support DSC pass-through. So, to more optimally make use of the available bandwidth, use DSC pass-through when possible by adding DSC pass-through enablement support into the DSC enable sequence. Signed-off-by: Hamza Mahfooz Signed-off-by: Alex Deucher --- .../drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 45 ++++++++++++++++++++-- 1 file changed, 41 insertions(+), 4 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index a0154a5f7183..bd364d2cc4f7 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -729,8 +729,14 @@ bool dm_helpers_dp_write_dsc_enable( const struct dc_stream_state *stream, bool enable) { - uint8_t enable_dsc = enable ? 1 : 0; + static const uint8_t DSC_DISABLE; + static const uint8_t DSC_DECODING = 0x01; + static const uint8_t DSC_PASSTHROUGH = 0x02; + struct amdgpu_dm_connector *aconnector; + struct drm_dp_mst_port *port; + uint8_t enable_dsc = enable ? DSC_DECODING : DSC_DISABLE; + uint8_t enable_passthrough = enable ? DSC_PASSTHROUGH : DSC_DISABLE; uint8_t ret = 0; if (!stream) @@ -750,8 +756,39 @@ bool dm_helpers_dp_write_dsc_enable( aconnector->dsc_aux, stream, enable_dsc); #endif - ret = drm_dp_dpcd_write(aconnector->dsc_aux, DP_DSC_ENABLE, &enable_dsc, 1); - DC_LOG_DC("Send DSC %s to MST RX\n", enable_dsc ? "enable" : "disable"); + port = aconnector->port; + + if (enable) { + if (port->passthrough_aux) { + ret = drm_dp_dpcd_write(port->passthrough_aux, + DP_DSC_ENABLE, + &enable_passthrough, 1); + DC_LOG_DC("Sent DSC pass-through enable to virtual dpcd port, ret = %u\n", + ret); + } + + ret = drm_dp_dpcd_write(aconnector->dsc_aux, + DP_DSC_ENABLE, &enable_dsc, 1); + DC_LOG_DC("Sent DSC decoding enable to %s port, ret = %u\n", + (port->passthrough_aux) ? "remote RX" : + "virtual dpcd", + ret); + } else { + ret = drm_dp_dpcd_write(aconnector->dsc_aux, + DP_DSC_ENABLE, &enable_dsc, 1); + DC_LOG_DC("Sent DSC decoding disable to %s port, ret = %u\n", + (port->passthrough_aux) ? "remote RX" : + "virtual dpcd", + ret); + + if (port->passthrough_aux) { + ret = drm_dp_dpcd_write(port->passthrough_aux, + DP_DSC_ENABLE, + &enable_passthrough, 1); + DC_LOG_DC("Sent DSC pass-through disable to virtual dpcd port, ret = %u\n", + ret); + } + } } if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT || stream->signal == SIGNAL_TYPE_EDP) { @@ -768,7 +805,7 @@ bool dm_helpers_dp_write_dsc_enable( #endif } - return (ret > 0); + return ret; } bool dm_helpers_is_dp_sink_present(struct dc_link *link) -- cgit v1.2.3 From 441b12bcae736c20a6b8bf6978f90426ab1719a1 Mon Sep 17 00:00:00 2001 From: Maíra Canal Date: Thu, 18 Aug 2022 10:27:30 -0300 Subject: drm/amd/display: Include missing header MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The file amdgpu_dm_plane.c missed the header amdgpu_dm_plane.h, which resulted on the following warning: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1046:5: warning: no previous prototype for 'fill_dc_scaling_info' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1222:6: warning: no previous prototype for 'handle_cursor_update' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:152:6: warning: no previous prototype for 'modifier_has_dcc' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1576:5: warning: no previous prototype for 'amdgpu_dm_plane_init' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:157:10: warning: no previous prototype for 'modifier_gfx9_swizzle_mode' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:752:5: warning: no previous prototype for 'fill_plane_buffer_attributes' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:83:31: warning: no previous prototype for 'amd_get_format_info' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:88:6: warning: no previous prototype for 'fill_blending_from_plane_state' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:992:5: warning: no previous prototype for 'dm_plane_helper_check_state' [-Wmissing-prototypes] Therefore, include the missing header on the file and turn global functions that are not used outside of the file into static functions. Fixes: 5d945cbcd4b1 ("drm/amd/display: Create a file dedicated to planes") Reported-by: kernel test robot Signed-off-by: Maíra Canal Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c | 5 +++-- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.h | 8 -------- 2 files changed, 3 insertions(+), 10 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c index 7e95232e93fe..538f14600c98 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c @@ -34,6 +34,7 @@ #include "dal_asic_id.h" #include "amdgpu_display.h" #include "amdgpu_dm_trace.h" +#include "amdgpu_dm_plane.h" #include "gc/gc_11_0_0_offset.h" #include "gc/gc_11_0_0_sh_mask.h" @@ -149,12 +150,12 @@ static void add_modifier(uint64_t **mods, uint64_t *size, uint64_t *cap, uint64_ *size += 1; } -bool modifier_has_dcc(uint64_t modifier) +static bool modifier_has_dcc(uint64_t modifier) { return IS_AMD_FMT_MOD(modifier) && AMD_FMT_MOD_GET(DCC, modifier); } -unsigned modifier_gfx9_swizzle_mode(uint64_t modifier) +static unsigned modifier_gfx9_swizzle_mode(uint64_t modifier) { if (modifier == DRM_FORMAT_MOD_LINEAR) return 0; diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.h index 95168c2cfa6f..286981a2dd40 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.h @@ -36,17 +36,9 @@ int fill_dc_scaling_info(struct amdgpu_device *adev, const struct drm_plane_state *state, struct dc_scaling_info *scaling_info); -void get_min_max_dc_plane_scaling(struct drm_device *dev, - struct drm_framebuffer *fb, - int *min_downscale, int *max_upscale); - int dm_plane_helper_check_state(struct drm_plane_state *state, struct drm_crtc_state *new_crtc_state); -bool modifier_has_dcc(uint64_t modifier); - -unsigned int modifier_gfx9_swizzle_mode(uint64_t modifier); - int fill_plane_buffer_attributes(struct amdgpu_device *adev, const struct amdgpu_framebuffer *afb, const enum surface_pixel_format format, -- cgit v1.2.3 From 42900348bfb41cbfced62060c9cf4b735119394c Mon Sep 17 00:00:00 2001 From: Roman Li Date: Thu, 11 Aug 2022 10:51:19 -0400 Subject: drm/amd/display: Remove redundant check in atomic_check [Why] We have 2 back-to-back checks for skipping connectors. Logically one of them will do the job. [How] Remove redundant check. Reviewed-by: Hersen Wu > Acked-by: Brian Chang Signed-off-by: Roman Li Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 2412dc601ce2..b0a5924d528e 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9380,9 +9380,6 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev, struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state); /* Skip connectors that are disabled or part of modeset already. */ - if (!old_con_state->crtc && !new_con_state->crtc) - continue; - if (!new_con_state->crtc) continue; -- cgit v1.2.3 From c17a34e0526fafc0e1e7f707c634d7e49dd08197 Mon Sep 17 00:00:00 2001 From: Ian Chen Date: Thu, 4 Aug 2022 15:44:27 +0800 Subject: drm/amd/display: Refactor edp dsc codes. Refactor edp dsc codes. We split out edp dsc config from "global" to "per-panel" config settings. Reviewed-by: Mike Hsieh Acked-by: Brian Chang Signed-off-by: Ian Chen Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++-- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 19 +++++++++++++++++++ drivers/gpu/drm/amd/display/dc/core/dc_link.c | 10 +++++++++- drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 4 ++-- drivers/gpu/drm/amd/display/dc/dc.h | 2 -- drivers/gpu/drm/amd/display/dc/dc_link.h | 10 ++++++++++ drivers/gpu/drm/amd/display/dc/dm_helpers.h | 7 ++++++- 7 files changed, 48 insertions(+), 8 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index b0a5924d528e..9d5ec1ea23a6 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1529,7 +1529,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) if (amdgpu_dc_debug_mask & DC_DISABLE_DSC) { adev->dm.dc->debug.disable_dsc = true; - adev->dm.dc->debug.disable_dsc_edp = true; } if (amdgpu_dc_debug_mask & DC_DISABLE_CLOCK_GATING) @@ -5629,7 +5628,8 @@ static void apply_dsc_policy_for_stream(struct amdgpu_dm_connector *aconnector, dc_dsc_policy_set_enable_dsc_when_not_needed( aconnector->dsc_settings.dsc_force_enable == DSC_CLK_FORCE_ENABLE); - if (aconnector->dc_link && sink->sink_signal == SIGNAL_TYPE_EDP && !dc->debug.disable_dsc_edp && + if (aconnector->dc_link && sink->sink_signal == SIGNAL_TYPE_EDP && + !aconnector->dc_link->panel_config.dsc.disable_dsc_edp && dc->caps.edp_dsc_support && aconnector->dsc_settings.dsc_force_enable != DSC_CLK_FORCE_DISABLE) { apply_dsc_policy_for_edp(aconnector, sink, stream, dsc_caps, max_dsc_target_bpp_limit_override); diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index bd364d2cc4f7..0b7440b92c10 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -916,6 +916,25 @@ void dm_helpers_smu_timeout(struct dc_context *ctx, unsigned int msg_id, unsigne //amdgpu_device_gpu_recover(dc_context->driver-context, NULL); } +void dm_helpers_init_panel_settings( + struct dc_context *ctx, + struct dc_panel_config *panel_config) +{ + // Feature DSC + panel_config->dsc.disable_dsc_edp = false; + panel_config->dsc.force_dsc_edp_policy = 0; +} + +void dm_helpers_override_panel_settings( + struct dc_context *ctx, + struct dc_panel_config *panel_config) +{ + // Feature DSC + if (amdgpu_dc_debug_mask & DC_DISABLE_DSC) { + panel_config->dsc.disable_dsc_edp = true; + } +} + void *dm_helpers_allocate_gpu_mem( struct dc_context *ctx, enum dc_gpu_mem_alloc_type type, diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 66d2ae7aacf5..74db87f3dc6f 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -1311,6 +1311,14 @@ static bool detect_link_and_local_sink(struct dc_link *link, sink->edid_caps.audio_modes[i].sample_rate, sink->edid_caps.audio_modes[i].sample_size); } + + if (link->connector_signal == SIGNAL_TYPE_EDP) { + // Init dc_panel_config + dm_helpers_init_panel_settings(dc_ctx, &link->panel_config); + // Override dc_panel_config if system has specific settings + dm_helpers_override_panel_settings(dc_ctx, &link->panel_config); + } + } else { /* From Connected-to-Disconnected. */ link->type = dc_connection_none; @@ -4736,7 +4744,7 @@ bool dc_link_should_enable_fec(const struct dc_link *link) else if (link->connector_signal == SIGNAL_TYPE_EDP && (link->dpcd_caps.dsc_caps.dsc_basic_caps.fields. dsc_support.DSC_SUPPORT == false - || link->dc->debug.disable_dsc_edp + || link->panel_config.dsc.disable_dsc_edp || !link->dc->caps.edp_dsc_support)) force_disable = true; diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index d2bdf3939cf9..e2413d2908c9 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -3743,7 +3743,7 @@ static bool decide_edp_link_settings_with_dsc(struct dc_link *link, unsigned int policy = 0; - policy = link->ctx->dc->debug.force_dsc_edp_policy; + policy = link->panel_config.dsc.force_dsc_edp_policy; if (max_link_rate == LINK_RATE_UNKNOWN) max_link_rate = link->verified_link_cap.link_rate; /* @@ -3909,7 +3909,7 @@ bool decide_link_settings(struct dc_stream_state *stream, if (stream->timing.flags.DSC) { enum dc_link_rate max_link_rate = LINK_RATE_UNKNOWN; - if (link->ctx->dc->debug.force_dsc_edp_policy) { + if (link->panel_config.dsc.force_dsc_edp_policy) { /* calculate link max link rate cap*/ struct dc_link_settings tmp_link_setting; struct dc_crtc_timing tmp_timing = stream->timing; diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 5e18bdb9785d..ec227e52fdd3 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -802,8 +802,6 @@ struct dc_debug_options { bool validate_dml_output; bool enable_dmcub_surface_flip; bool usbc_combo_phy_reset_wa; - bool disable_dsc_edp; - unsigned int force_dsc_edp_policy; bool enable_dram_clock_change_one_display_vactive; /* TODO - remove once tested */ bool legacy_dp2_lt; diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index d1214944839f..43d250918fd0 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -113,6 +113,15 @@ struct psr_settings { unsigned int psr_power_opt; }; +/* To split out "global" and "per-panel" config settings. + * Add a struct dc_panel_config under dc_link + */ +struct dc_panel_config { + struct dsc { + bool disable_dsc_edp; + unsigned int force_dsc_edp_policy; + } dsc; +}; /* * A link contains one or more sinks and their connected status. * The currently active signal type (HDMI, DP-SST, DP-MST) is also reported. @@ -233,6 +242,7 @@ struct dc_link { struct gpio *hpd_gpio; enum dc_link_fec_state fec_state; + struct dc_panel_config panel_config; enum phy_state phy_state; }; diff --git a/drivers/gpu/drm/amd/display/dc/dm_helpers.h b/drivers/gpu/drm/amd/display/dc/dm_helpers.h index fb6a2d7b6470..6e4d3df0454e 100644 --- a/drivers/gpu/drm/amd/display/dc/dm_helpers.h +++ b/drivers/gpu/drm/amd/display/dc/dm_helpers.h @@ -171,7 +171,12 @@ void dm_helpers_smu_timeout(struct dc_context *ctx, unsigned int msg_id, unsigne // 0x1 = Result_OK, 0xFE = Result_UnkmownCmd, 0x0 = Status_Busy #define IS_SMU_TIMEOUT(result) \ (result == 0x0) - +void dm_helpers_init_panel_settings( + struct dc_context *ctx, + struct dc_panel_config *config); +void dm_helpers_override_panel_settings( + struct dc_context *ctx, + struct dc_panel_config *config); int dm_helper_dmub_aux_transfer_sync( struct dc_context *ctx, const struct dc_link *link, -- cgit v1.2.3 From 41ee1f18ef52390518ed14b8be98640955d8f767 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 30 Aug 2022 17:57:52 -0400 Subject: drm/amd/display: fix documentation for amdgpu_dm_update_freesync_caps() Document missing parameter. Cc: Rodrigo Siqueira Cc: Harry Wentland Fixes: 8889a13f99e5 ("drm/amd/display: Add some extra kernel doc to amdgpu_dm") Reported-by: Stephen Rothwell Reviewed-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 9d5ec1ea23a6..b053c13a81a5 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9936,7 +9936,8 @@ static int parse_hdmi_amd_vsdb(struct amdgpu_dm_connector *aconnector, /** * amdgpu_dm_update_freesync_caps - Update Freesync capabilities * - * @aconnector: Connector to query. + * @connector: Connector to query. + * @edid: EDID from monitor * * Amdgpu supports Freesync in DP and HDMI displays, and it is required to keep * track of some of the display information in the internal data struct used by -- cgit v1.2.3 From b73ac0ecd4683878a335510fd100c1081e6c87fb Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 2 Sep 2022 15:01:05 +0200 Subject: drm/amd/display: fix memory leak when using debugfs_lookup() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. Fix this up by properly calling dput(). Cc: Harry Wentland Cc: Leo Li Cc: Rodrigo Siqueira Cc: Alex Deucher Cc: "Christian König" Cc: "Pan, Xinhui" Cc: David Airlie Cc: Daniel Vetter Cc: Wayne Lin Cc: hersen wu Cc: Wenjing Liu Cc: Patrik Jakobsson Cc: Thelford Williams Cc: Fangzhi Zuo Cc: Yongzhi Liu Cc: Mikita Lipski Cc: Jiapeng Chong Cc: Bhanuprakash Modem Cc: Sean Paul Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Cc: stable@vger.kernel.org Reviewed-by: Rodrigo Siqueira Signed-off-by: Greg Kroah-Hartman Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index 0e48824f55e3..ee242d9d8b06 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -3288,6 +3288,7 @@ void crtc_debugfs_init(struct drm_crtc *crtc) &crc_win_y_end_fops); debugfs_create_file_unsafe("crc_win_update", 0644, dir, crtc, &crc_win_update_fops); + dput(dir); #endif debugfs_create_file("amdgpu_current_bpc", 0644, crtc->debugfs_entry, crtc, &amdgpu_current_bpc_fops); -- cgit v1.2.3