Backmerge tag 'v6.1-rc6' into drm-next

Linux 6.1-rc6

This is needed for drm-misc-next and tegra.

Signed-off-by: Dave Airlie <airlied@redhat.com>

42 files changed, 367 insertions, 124 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 459150460815..8516c814bc9b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -109,6 +109,7 @@ static int amdgpu_cs_p1_ib(struct amdgpu_cs_parser *p,
 		return r;
 
 	++(num_ibs[r]);
+	p->gang_leader_idx = r;
 	return 0;
 }
 
@@ -298,7 +299,7 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p,
 		if (ret)
 			goto free_all_kdata;
 	}
-	p->gang_leader = p->jobs[p->gang_size - 1];
+	p->gang_leader = p->jobs[p->gang_leader_idx];
 
 	if (p->ctx->vram_lost_counter != p->gang_leader->vram_lost_counter) {
 		ret = -ECANCELED;
@@ -1210,10 +1211,9 @@ static int amdgpu_cs_sync_rings(struct amdgpu_cs_parser *p)
 			return r;
 	}
 
-	r = amdgpu_ctx_wait_prev_fence(p->ctx, p->entities[p->gang_size - 1]);
+	r = amdgpu_ctx_wait_prev_fence(p->ctx, p->entities[p->gang_leader_idx]);
 	if (r && r != -ERESTARTSYS)
 		DRM_ERROR("amdgpu_ctx_wait_prev_fence failed.\n");
-
 	return r;
 }
 
@@ -1247,9 +1247,12 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 	for (i = 0; i < p->gang_size; ++i)
 		drm_sched_job_arm(&p->jobs[i]->base);
 
-	for (i = 0; i < (p->gang_size - 1); ++i) {
+	for (i = 0; i < p->gang_size; ++i) {
 		struct dma_fence *fence;
 
+		if (p->jobs[i] == leader)
+			continue;
+
 		fence = &p->jobs[i]->base.s_fence->scheduled;
 		r = drm_sched_job_add_dependency(&leader->base, fence);
 		if (r)
@@ -1286,7 +1289,10 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 	list_for_each_entry(e, &p->validated, tv.head) {
 
 		/* Everybody except for the gang leader uses READ */
-		for (i = 0; i < (p->gang_size - 1); ++i) {
+		for (i = 0; i < p->gang_size; ++i) {
+			if (p->jobs[i] == leader)
+				continue;
+
 			dma_resv_add_fence(e->tv.bo->base.resv,
 					   &p->jobs[i]->base.s_fence->finished,
 					   DMA_RESV_USAGE_READ);
@@ -1296,7 +1302,7 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 		e->tv.num_shared = 0;
 	}
 
-	seq = amdgpu_ctx_add_fence(p->ctx, p->entities[p->gang_size - 1],
+	seq = amdgpu_ctx_add_fence(p->ctx, p->entities[p->gang_leader_idx],
 				   p->fence);
 	amdgpu_cs_post_dependencies(p);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.h
index 207e801c24ed..113f39510a72 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.h
@@ -54,6 +54,7 @@ struct amdgpu_cs_parser {
 
 	/* scheduler job objects */
 	unsigned int		gang_size;
+	unsigned int		gang_leader_idx;
 	struct drm_sched_entity	*entities[AMDGPU_CS_GANG_SIZE];
 	struct amdgpu_job	*jobs[AMDGPU_CS_GANG_SIZE];
 	struct amdgpu_job	*gang_leader;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
index 7cf99f752e01..53ff91fc6cf6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
@@ -500,6 +500,8 @@ static int amdgpu_vkms_sw_init(void *handle)
 
 	adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
 
+	adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
+
 	r = amdgpu_display_modeset_create_props(adev);
 	if (r)
 		return r;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index 18c1a173d187..faa12146635c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -435,7 +435,7 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
 	if (place->flags & TTM_PL_FLAG_TOPDOWN)
 		vres->flags |= DRM_BUDDY_TOPDOWN_ALLOCATION;
 
-	if (fpfn || lpfn != man->size)
+	if (fpfn || lpfn != mgr->mm.size)
 		/* Allocate blocks in desired range */
 		vres->flags |= DRM_BUDDY_RANGE_ALLOCATION;
 
diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c
index 5be6562c2a19..6a614e54b383 100644
--- a/drivers/gpu/drm/bridge/parade-ps8640.c
+++ b/drivers/gpu/drm/bridge/parade-ps8640.c
@@ -105,6 +105,7 @@ struct ps8640 {
 	struct gpio_desc *gpio_powerdown;
 	struct device_link *link;
 	bool pre_enabled;
+	bool need_post_hpd_delay;
 };
 
 static const struct regmap_config ps8640_regmap_config[] = {
@@ -173,14 +174,31 @@ static int _ps8640_wait_hpd_asserted(struct ps8640 *ps_bridge, unsigned long wai
 {
 	struct regmap *map = ps_bridge->regmap[PAGE2_TOP_CNTL];
 	int status;
+	int ret;
 
 	/*
 	 * Apparently something about the firmware in the chip signals that
 	 * HPD goes high by reporting GPIO9 as high (even though HPD isn't
 	 * actually connected to GPIO9).
 	 */
-	return regmap_read_poll_timeout(map, PAGE2_GPIO_H, status,
-					status & PS_GPIO9, wait_us / 10, wait_us);
+	ret = regmap_read_poll_timeout(map, PAGE2_GPIO_H, status,
+				       status & PS_GPIO9, wait_us / 10, wait_us);
+
+	/*
+	 * The first time we see HPD go high after a reset we delay an extra
+	 * 50 ms. The best guess is that the MCU is doing "stuff" during this
+	 * time (maybe talking to the panel) and we don't want to interrupt it.
+	 *
+	 * No locking is done around "need_post_hpd_delay". If we're here we
+	 * know we're holding a PM Runtime reference and the only other place
+	 * that touches this is PM Runtime resume.
+	 */
+	if (!ret && ps_bridge->need_post_hpd_delay) {
+		ps_bridge->need_post_hpd_delay = false;
+		msleep(50);
+	}
+
+	return ret;
 }
 
 static int ps8640_wait_hpd_asserted(struct drm_dp_aux *aux, unsigned long wait_us)
@@ -388,6 +406,9 @@ static int __maybe_unused ps8640_resume(struct device *dev)
 	msleep(50);
 	gpiod_set_value(ps_bridge->gpio_reset, 0);
 
+	/* We just reset things, so we need a delay after the first HPD */
+	ps_bridge->need_post_hpd_delay = true;
+
 	/*
 	 * Mystery 200 ms delay for the "MCU to be ready". It's unclear if
 	 * this is truly necessary since the MCU will already signal that
diff --git a/drivers/gpu/drm/display/drm_dp_dual_mode_helper.c b/drivers/gpu/drm/display/drm_dp_dual_mode_helper.c
index 3ea53bb67d3b..bd61e20770a5 100644
--- a/drivers/gpu/drm/display/drm_dp_dual_mode_helper.c
+++ b/drivers/gpu/drm/display/drm_dp_dual_mode_helper.c
@@ -63,23 +63,45 @@
 ssize_t drm_dp_dual_mode_read(struct i2c_adapter *adapter,
 			      u8 offset, void *buffer, size_t size)
 {
+	u8 zero = 0;
+	char *tmpbuf = NULL;
+	/*
+	 * As sub-addressing is not supported by all adaptors,
+	 * always explicitly read from the start and discard
+	 * any bytes that come before the requested offset.
+	 * This way, no matter whether the adaptor supports it
+	 * or not, we'll end up reading the proper data.
+	 */
 	struct i2c_msg msgs[] = {
 		{
 			.addr = DP_DUAL_MODE_SLAVE_ADDRESS,
 			.flags = 0,
 			.len = 1,
-			.buf = &offset,
+			.buf = &zero,
 		},
 		{
 			.addr = DP_DUAL_MODE_SLAVE_ADDRESS,
 			.flags = I2C_M_RD,
-			.len = size,
+			.len = size + offset,
 			.buf = buffer,
 		},
 	};
 	int ret;
 
+	if (offset) {
+		tmpbuf = kmalloc(size + offset, GFP_KERNEL);
+		if (!tmpbuf)
+			return -ENOMEM;
+
+		msgs[1].buf = tmpbuf;
+	}
+
 	ret = i2c_transfer(adapter, msgs, ARRAY_SIZE(msgs));
+	if (tmpbuf)
+		memcpy(buffer, tmpbuf + offset, size);
+
+	kfree(tmpbuf);
+
 	if (ret < 0)
 		return ret;
 	if (ret != ARRAY_SIZE(msgs))
@@ -208,18 +230,6 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const struct drm_device *dev,
 	if (ret)
 		return DRM_DP_DUAL_MODE_UNKNOWN;
 
-	/*
-	 * Sigh. Some (maybe all?) type 1 adaptors are broken and ack
-	 * the offset but ignore it, and instead they just always return
-	 * data from the start of the HDMI ID buffer. So for a broken
-	 * type 1 HDMI adaptor a single byte read will always give us
-	 * 0x44, and for a type 1 DVI adaptor it should give 0x00
-	 * (assuming it implements any registers). Fortunately neither
-	 * of those values will match the type 2 signature of the
-	 * DP_DUAL_MODE_ADAPTOR_ID register so we can proceed with
-	 * the type 2 adaptor detection safely even in the presence
-	 * of broken type 1 adaptors.
-	 */
 	ret = drm_dp_dual_mode_read(adapter, DP_DUAL_MODE_ADAPTOR_ID,
 				    &adaptor_id, sizeof(adaptor_id));
 	drm_dbg_kms(dev, "DP dual mode adaptor ID: %02x (err %zd)\n", adaptor_id, ret);
@@ -233,11 +243,10 @@ enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(const struct drm_device *dev,
 				return DRM_DP_DUAL_MODE_TYPE2_DVI;
 		}
 		/*
-		 * If neither a proper type 1 ID nor a broken type 1 adaptor
-		 * as described above, assume type 1, but let the user know
-		 * that we may have misdetected the type.
+		 * If not a proper type 1 ID, still assume type 1, but let
+		 * the user know that we may have misdetected the type.
 		 */
-		if (!is_type1_adaptor(adaptor_id) && adaptor_id != hdmi_id[0])
+		if (!is_type1_adaptor(adaptor_id))
 			drm_err(dev, "Unexpected DP dual mode adaptor ID %02x\n", adaptor_id);
 
 	}
@@ -343,10 +352,8 @@ EXPORT_SYMBOL(drm_dp_dual_mode_get_tmds_output);
  * @enable: enable (as opposed to disable) the TMDS output buffers
  *
  * Set the state of the TMDS output buffers in the adaptor. For
- * type2 this is set via the DP_DUAL_MODE_TMDS_OEN register. As
- * some type 1 adaptors have problems with registers (see comments
- * in drm_dp_dual_mode_detect()) we avoid touching the register,
- * making this function a no-op on type 1 adaptors.
+ * type2 this is set via the DP_DUAL_MODE_TMDS_OEN register.
+ * Type1 adaptors do not support any register writes.
  *
  * Returns:
  * 0 on success, negative error code on failure
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 8214a0b1ab7f..203bf8d6c34c 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -615,7 +615,7 @@ static int drm_dev_init(struct drm_device *dev,
 	mutex_init(&dev->clientlist_mutex);
 	mutex_init(&dev->master_mutex);
 
-	ret = drmm_add_action(dev, drm_dev_init_release, NULL);
+	ret = drmm_add_action_or_reset(dev, drm_dev_init_release, NULL);
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index 653a5821dd53..74ff33c2ddaa 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -817,6 +817,38 @@ static bool is_listed_fourcc(const uint32_t *fourccs, size_t nfourccs, uint32_t
 	return false;
 }
 
+static const uint32_t conv_from_xrgb8888[] = {
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_ARGB2101010,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_RGB888,
+};
+
+static const uint32_t conv_from_rgb565_888[] = {
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ARGB8888,
+};
+
+static bool is_conversion_supported(uint32_t from, uint32_t to)
+{
+	switch (from) {
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ARGB8888:
+		return is_listed_fourcc(conv_from_xrgb8888, ARRAY_SIZE(conv_from_xrgb8888), to);
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_RGB888:
+		return is_listed_fourcc(conv_from_rgb565_888, ARRAY_SIZE(conv_from_rgb565_888), to);
+	case DRM_FORMAT_XRGB2101010:
+		return to == DRM_FORMAT_ARGB2101010;
+	case DRM_FORMAT_ARGB2101010:
+		return to == DRM_FORMAT_XRGB2101010;
+	default:
+		return false;
+	}
+}
+
 /**
  * drm_fb_build_fourcc_list - Filters a list of supported color formats against
  *                            the device's native formats
@@ -837,7 +869,9 @@ static bool is_listed_fourcc(const uint32_t *fourccs, size_t nfourccs, uint32_t
  * be handed over to drm_universal_plane_init() et al. Native formats
  * will go before emulated formats. Other heuristics might be applied
  * to optimize the order. Formats near the beginning of the list are
- * usually preferred over formats near the end of the list.
+ * usually preferred over formats near the end of the list. Formats
+ * without conversion helpers will be skipped. New drivers should only
+ * pass in XRGB8888 and avoid exposing additional emulated formats.
  *
  * Returns:
  * The number of color-formats 4CC codes returned in @fourccs_out.
@@ -849,7 +883,7 @@ size_t drm_fb_build_fourcc_list(struct drm_device *dev,
 {
 	u32 *fourccs = fourccs_out;
 	const u32 *fourccs_end = fourccs_out + nfourccs_out;
-	bool found_native = false;
+	uint32_t native_format = 0;
 	size_t i;
 
 	/*
@@ -868,27 +902,19 @@ size_t drm_fb_build_fourcc_list(struct drm_device *dev,
 
 		drm_dbg_kms(dev, "adding native format %p4cc\n", &fourcc);
 
-		if (!found_native)
-			found_native = is_listed_fourcc(driver_fourccs, driver_nfourccs, fourcc);
+		/*
+		 * There should only be one native format with the current API.
+		 * This API needs to be refactored to correctly support arbitrary
+		 * sets of native formats, since it needs to report which native
+		 * format to use for each emulated format.
+		 */
+		if (!native_format)
+			native_format = fourcc;
 		*fourccs = fourcc;
 		++fourccs;
 	}
 
 	/*
-	 * The plane's atomic_update helper converts the framebuffer's color format
-	 * to a native format when copying to device memory.
-	 *
-	 * If there is not a single format supported by both, device and
-	 * driver, the native formats are likely not supported by the conversion
-	 * helpers. Therefore *only* support the native formats and add a
-	 * conversion helper ASAP.
-	 */
-	if (!found_native) {
-		drm_warn(dev, "Format conversion helpers required to add extra formats.\n");
-		goto out;
-	}
-
-	/*
 	 * The extra formats, emulated by the driver, go second.
 	 */
 
@@ -900,6 +926,9 @@ size_t drm_fb_build_fourcc_list(struct drm_device *dev,
 		} else if (fourccs == fourccs_end) {
 			drm_warn(dev, "Ignoring emulated format %p4cc\n", &fourcc);
 			continue; /* end of available output buffer */
+		} else if (!is_conversion_supported(fourcc, native_format)) {
+			drm_dbg_kms(dev, "Unsupported emulated format %p4cc\n", &fourcc);
+			continue; /* format is not supported for conversion */
 		}
 
 		drm_dbg_kms(dev, "adding emulated format %p4cc\n", &fourcc);
@@ -908,7 +937,6 @@ size_t drm_fb_build_fourcc_list(struct drm_device *dev,
 		++fourccs;
 	}
 
-out:
 	return fourccs - fourccs_out;
 }
 EXPORT_SYMBOL(drm_fb_build_fourcc_list);
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index 7bb98e6a446d..5ea5e260118c 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -104,7 +104,8 @@ static inline void drm_vblank_flush_worker(struct drm_vblank_crtc *vblank)
 
 static inline void drm_vblank_destroy_worker(struct drm_vblank_crtc *vblank)
 {
-	kthread_destroy_worker(vblank->worker);
+	if (vblank->worker)
+		kthread_destroy_worker(vblank->worker);
 }
 
 int drm_vblank_worker_init(struct drm_vblank_crtc *vblank);
diff --git a/drivers/gpu/drm/drm_panel_orientation_quirks.c b/drivers/gpu/drm/drm_panel_orientation_quirks.c
index 8a0c0e0bb5bd..52d8800a8ab8 100644
--- a/drivers/gpu/drm/drm_panel_orientation_quirks.c
+++ b/drivers/gpu/drm/drm_panel_orientation_quirks.c
@@ -134,6 +134,12 @@ static const struct dmi_system_id orientation_data[] = {
 		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One S1003"),
 		},
 		.driver_data = (void *)&lcd800x1280_rightside_up,
+	}, {	/* Acer Switch V 10 (SW5-017) */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SW5-017"),
+		},
+		.driver_data = (void *)&lcd800x1280_rightside_up,
 	}, {	/* Anbernic Win600 */
 		.matches = {
 		  DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Anbernic"),
@@ -319,6 +325,12 @@ static const struct dmi_system_id orientation_data[] = {
 		 DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"),
 		},
 		.driver_data = (void *)&lcd1200x1920_rightside_up,
+	}, {	/* Nanote UMPC-01 */
+		.matches = {
+		 DMI_MATCH(DMI_SYS_VENDOR, "RWC CO.,LTD"),
+		 DMI_MATCH(DMI_PRODUCT_NAME, "UMPC-01"),
+		},
+		.driver_data = (void *)&lcd1200x1920_rightside_up,
 	}, {	/* OneGX1 Pro */
 		.matches = {
 		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "SYSTEM_MANUFACTURER"),
diff --git a/drivers/gpu/drm/imx/Kconfig b/drivers/gpu/drm/imx/Kconfig
index 975de4ff7313..fd5b2471fdf0 100644
--- a/drivers/gpu/drm/imx/Kconfig
+++ b/drivers/gpu/drm/imx/Kconfig
@@ -4,7 +4,6 @@ config DRM_IMX
 	select DRM_KMS_HELPER
 	select VIDEOMODE_HELPERS
 	select DRM_GEM_DMA_HELPER
-	select DRM_KMS_HELPER
 	depends on DRM && (ARCH_MXC || ARCH_MULTIPLATFORM || COMPILE_TEST)
 	depends on IMX_IPUV3_CORE
 	help
diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index d64ebd2cf15e..d6832f506322 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -217,8 +217,9 @@ static int imx_tve_connector_get_modes(struct drm_connector *connector)
 	return ret;
 }
 
-static int imx_tve_connector_mode_valid(struct drm_connector *connector,
-					struct drm_display_mode *mode)
+static enum drm_mode_status
+imx_tve_connector_mode_valid(struct drm_connector *connector,
+			     struct drm_display_mode *mode)
 {
 	struct imx_tve *tve = con_to_tve(connector);
 	unsigned long rate;
diff --git a/drivers/gpu/drm/lima/lima_devfreq.c b/drivers/gpu/drm/lima/lima_devfreq.c
index 011be7ff51e1..bc8fb4e38d0a 100644
--- a/drivers/gpu/drm/lima/lima_devfreq.c
+++ b/drivers/gpu/drm/lima/lima_devfreq.c
@@ -112,11 +112,6 @@ int lima_devfreq_init(struct lima_device *ldev)
 	unsigned long cur_freq;
 	int ret;
 	const char *regulator_names[] = { "mali", NULL };
-	const char *clk_names[] = { "core", NULL };
-	struct dev_pm_opp_config config = {
-		.regulator_names = regulator_names,
-		.clk_names = clk_names,
-	};
 
 	if (!device_property_present(dev, "operating-points-v2"))
 		/* Optional, continue without devfreq */
@@ -124,7 +119,15 @@ int lima_devfreq_init(struct lima_device *ldev)
 
 	spin_lock_init(&ldevfreq->lock);
 
-	ret = devm_pm_opp_set_config(dev, &config);
+	/*
+	 * clkname is set separately so it is not affected by the optional
+	 * regulator setting which may return error.
+	 */
+	ret = devm_pm_opp_set_clkname(dev, "core");
+	if (ret)
+		return ret;
+
+	ret = devm_pm_opp_set_regulators(dev, regulator_names);
 	if (ret) {
 		/* Continue if the optional regulator is missing */
 		if (ret != -ENODEV)
diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index 4e0cbd682725..3c9dfdb0b328 100644
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -155,7 +155,7 @@ config DRM_MSM_HDMI
 	  Compile in support for the HDMI output MSM DRM driver. It can
 	  be a primary or a secondary display on device. Note that this is used
 	  only for the direct HDMI output. If the device outputs HDMI data
-	  throught some kind of DSI-to-HDMI bridge, this option can be disabled.
+	  through some kind of DSI-to-HDMI bridge, this option can be disabled.
 
 config DRM_MSM_HDMI_HDCP
 	bool "Enable HDMI HDCP support in MSM DRM driver"
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index 55f443328d8e..a5c3d1ed255a 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -91,7 +91,7 @@ struct a6xx_state_memobj {
 static void *state_kcalloc(struct a6xx_gpu_state *a6xx_state, int nr, size_t objsize)
 {
 	struct a6xx_state_memobj *obj =
-		kzalloc((nr * objsize) + sizeof(*obj), GFP_KERNEL);
+		kvzalloc((nr * objsize) + sizeof(*obj), GFP_KERNEL);
 
 	if (!obj)
 		return NULL;
@@ -813,6 +813,9 @@ static struct msm_gpu_state_bo *a6xx_snapshot_gmu_bo(
 {
 	struct msm_gpu_state_bo *snapshot;
 
+	if (!bo->size)
+		return NULL;
+
 	snapshot = state_kcalloc(a6xx_state, 1, sizeof(*snapshot));
 	if (!snapshot)
 		return NULL;
@@ -1040,8 +1043,13 @@ static void a6xx_gpu_state_destroy(struct kref *kref)
 	if (a6xx_state->gmu_hfi)
 		kvfree(a6xx_state->gmu_hfi->data);
 
-	list_for_each_entry_safe(obj, tmp, &a6xx_state->objs, node)
-		kfree(obj);
+	if (a6xx_state->gmu_debug)
+		kvfree(a6xx_state->gmu_debug->data);
+
+	list_for_each_entry_safe(obj, tmp, &a6xx_state->objs, node) {
+		list_del(&obj->node);
+		kvfree(obj);
+	}
 
 	adreno_gpu_state_destroy(state);
 	kfree(a6xx_state);
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index 24b489b6129a..628806423f7d 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -679,6 +679,9 @@ static int adreno_system_suspend(struct device *dev)
 	struct msm_gpu *gpu = dev_to_gpu(dev);
 	int remaining, ret;
 
+	if (!gpu)
+		return 0;
+
 	suspend_scheduler(gpu);
 
 	remaining = wait_event_timeout(gpu->retire_event,
@@ -700,7 +703,12 @@ out:
 
 static int adreno_system_resume(struct device *dev)
 {
-	resume_scheduler(dev_to_gpu(dev));
+	struct msm_gpu *gpu = dev_to_gpu(dev);
+
+	if (!gpu)
+		return 0;
+
+	resume_scheduler(gpu);
 	return pm_runtime_force_resume(dev);
 }
 
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 382fb7f9e497..5a0e8491cd3a 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -729,7 +729,12 @@ static char *adreno_gpu_ascii85_encode(u32 *src, size_t len)
 	return buf;
 }
 
-/* len is expected to be in bytes */
+/* len is expected to be in bytes
+ *
+ * WARNING: *ptr should be allocated with kvmalloc or friends.  It can be free'd
+ * with kvfree() and replaced with a newly kvmalloc'd buffer on the first call
+ * when the unencoded raw data is encoded
+ */
 void adreno_show_object(struct drm_printer *p, void **ptr, int len,
 		bool *encoded)
 {
diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c
index 7288041dd86a..7444b75c4215 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c
@@ -56,8 +56,9 @@ static int mdp4_lvds_connector_get_modes(struct drm_connector *connector)
 	return ret;
 }
 
-static int mdp4_lvds_connector_mode_valid(struct drm_connector *connector,
-				 struct drm_display_mode *mode)
+static enum drm_mode_status
+mdp4_lvds_connector_mode_valid(struct drm_connector *connector,
+			       struct drm_display_mode *mode)
 {
 	struct mdp4_lvds_connector *mdp4_lvds_connector =
 			to_mdp4_lvds_connector(connector);
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 3854c9f1f7e9..dd26ca651a05 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1243,8 +1243,7 @@ static int dp_ctrl_link_train(struct dp_ctrl_private *ctrl,
 {
 	int ret = 0;
 	const u8 *dpcd = ctrl->panel->dpcd;
-	u8 encoding = DP_SET_ANSI_8B10B;
-	u8 ssc;
+	u8 encoding[] = { 0, DP_SET_ANSI_8B10B };
 	u8 assr;
 	struct dp_link_info link_info = {0};
 
@@ -1256,13 +1255,11 @@ static int dp_ctrl_link_train(struct dp_ctrl_private *ctrl,
 
 	dp_aux_link_configure(ctrl->aux, &link_info);
 
-	if (drm_dp_max_downspread(dpcd)) {
-		ssc = DP_SPREAD_AMP_0_5;
-		drm_dp_dpcd_write(ctrl->aux, DP_DOWNSPREAD_CTRL, &ssc, 1);
-	}
+	if (drm_dp_max_downspread(dpcd))
+		encoding[0] |= DP_SPREAD_AMP_0_5;
 
-	drm_dp_dpcd_write(ctrl->aux, DP_MAIN_LINK_CHANNEL_CODING_SET,
-				&encoding, 1);
+	/* config DOWNSPREAD_CTRL and MAIN_LINK_CHANNEL_CODING_SET */
+	drm_dp_dpcd_write(ctrl->aux, DP_DOWNSPREAD_CTRL, encoding, 2);
 
 	if (drm_dp_alternate_scrambler_reset_cap(dpcd)) {
 		assr = DP_ALTERNATE_SCRAMBLER_RESET_ENABLE;
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 39c9e55f07cc..c9d9b384ddd0 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1249,7 +1249,7 @@ int dp_display_request_irq(struct msm_dp *dp_display)
 		return -EINVAL;
 	}
 
-	rc = devm_request_irq(&dp->pdev->dev, dp->irq,
+	rc = devm_request_irq(dp_display->drm_dev->dev, dp->irq,
 			dp_display_irq_handler,
 			IRQF_TRIGGER_HIGH, "dp_display_isr", dp);
 	if (rc < 0) {
@@ -1528,6 +1528,11 @@ void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
 	}
 }
 
+static void of_dp_aux_depopulate_bus_void(void *data)
+{
+	of_dp_aux_depopulate_bus(data);
+}
+
 static int dp_display_get_next_bridge(struct msm_dp *dp)
 {
 	int rc;
@@ -1552,10 +1557,16 @@ static int dp_display_get_next_bridge(struct msm_dp *dp)
 		 * panel driver is probed asynchronously but is the best we
 		 * can do without a bigger driver reorganization.
 		 */
-		rc = devm_of_dp_aux_populate_ep_devices(dp_priv->aux);
+		rc = of_dp_aux_populate_bus(dp_priv->aux, NULL);
 		of_node_put(aux_bus);
 		if (rc)
 			goto error;
+
+		rc = devm_add_action_or_reset(dp->drm_dev->dev,
+						of_dp_aux_depopulate_bus_void,
+						dp_priv->aux);
+		if (rc)
+			goto error;
 	} else if (dp->is_edp) {
 		DRM_ERROR("eDP aux_bus not found\n");
 		return -ENODEV;
@@ -1568,7 +1579,7 @@ static int dp_display_get_next_bridge(struct msm_dp *dp)
 	 * For DisplayPort interfaces external bridges are optional, so
 	 * silently ignore an error if one is not present (-ENODEV).
 	 */
-	rc = dp_parser_find_next_bridge(dp_priv->parser);
+	rc = devm_dp_parser_find_next_bridge(dp->drm_dev->dev, dp_priv->parser);
 	if (!dp->is_edp && rc == -ENODEV)
 		return 0;
 
@@ -1597,6 +1608,12 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
 		return -EINVAL;
 
 	priv = dev->dev_private;
+
+	if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
+		DRM_DEV_ERROR(dev->dev, "too many bridges\n");
+		return -ENOSPC;
+	}
+
 	dp_display->drm_dev = dev;
 
 	dp_priv = container_of(dp_display, struct dp_display_private, dp_display);
diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_drm.c
index 6df25f7662e7..6db82f9b03af 100644
--- a/drivers/gpu/drm/msm/dp/dp_drm.c
+++ b/drivers/gpu/drm/msm/dp/dp_drm.c
@@ -31,6 +31,36 @@ static enum drm_connector_status dp_bridge_detect(struct drm_bridge *bridge)
 					connector_status_disconnected;
 }
 
+static int dp_bridge_atomic_check(struct drm_bridge *bridge,
+			    struct drm_bridge_state *bridge_state,
+			    struct drm_crtc_state *crtc_state,
+			    struct drm_connector_state *conn_state)
+{
+	struct msm_dp *dp;
+
+	dp = to_dp_bridge(bridge)->dp_display;
+
+	drm_dbg_dp(dp->drm_dev, "is_connected = %s\n",
+		(dp->is_connected) ? "true" : "false");
+
+	/*
+	 * There is no protection in the DRM framework to check if the display
+	 * pipeline has been already disabled before trying to disable it again.
+	 * Hence if the sink is unplugged, the pipeline gets disabled, but the
+	 * crtc->active is still true. Any attempt to set the mode or manually
+	 * disable this encoder will result in the crash.
+	 *
+	 * TODO: add support for telling the DRM subsystem that the pipeline is
+	 * disabled by the hardware and thus all access to it should be forbidden.
+	 * After that this piece of code can be removed.
+	 */
+	if (bridge->ops & DRM_BRIDGE_OP_HPD)
+		return (dp->is_connected) ? 0 : -ENOTCONN;
+
+	return 0;
+}
+
+
 /**
  * dp_bridge_get_modes - callback to add drm modes via drm_mode_probed_add()
  * @bridge: Poiner to drm bridge
@@ -61,6 +91,9 @@ static int dp_bridge_get_modes(struct drm_bridge *bridge, struct drm_connector *
 }
 
 static const struct drm_bridge_funcs dp_bridge_ops = {
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state   = drm_atomic_helper_bridge_destroy_state,
+	.atomic_reset           = drm_atomic_helper_bridge_reset,
 	.enable       = dp_bridge_enable,
 	.disable      = dp_bridge_disable,
 	.post_disable = dp_bridge_post_disable,
@@ -68,6 +101,7 @@ static const struct drm_bridge_funcs dp_bridge_ops = {
 	.mode_valid   = dp_bridge_mode_valid,
 	.get_modes    = dp_bridge_get_modes,
 	.detect       = dp_bridge_detect,
+	.atomic_check = dp_bridge_atomic_check,
 };
 
 struct drm_bridge *dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev,
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c b/drivers/gpu/drm/msm/dp/dp_parser.c
index dd732215d55b..dcbe893d66d7 100644
--- a/drivers/gpu/drm/msm/dp/dp_parser.c
+++ b/drivers/gpu/drm/msm/dp/dp_parser.c
@@ -240,12 +240,12 @@ static int dp_parser_clock(struct dp_parser *parser)
 	return 0;
 }
 
-int dp_parser_find_next_bridge(struct dp_parser *parser)
+int devm_dp_parser_find_next_bridge(struct device *dev, struct dp_parser *parser)
 {
-	struct device *dev = &parser->pdev->dev;
+	struct platform_device *pdev = parser->pdev;
 	struct drm_bridge *bridge;
 
-	bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
+	bridge = devm_drm_of_get_bridge(dev, pdev->dev.of_node, 1, 0);
 	if (IS_ERR(bridge))
 		return PTR_ERR(bridge);
 
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.h b/drivers/gpu/drm/msm/dp/dp_parser.h
index 866c1a82bf1a..d30ab773db46 100644
--- a/drivers/gpu/drm/msm/dp/dp_parser.h
+++ b/drivers/gpu/drm/msm/dp/dp_parser.h
@@ -138,8 +138,9 @@ struct dp_parser {
 struct dp_parser *dp_parser_get(struct platform_device *pdev);
 
 /**
- * dp_parser_find_next_bridge() - find an additional bridge to DP
+ * devm_dp_parser_find_next_bridge() - find an additional bridge to DP
  *
+ * @dev: device to tie bridge lifetime to
  * @parser: dp_parser data from client
  *
  * This function is used to find any additional bridge attached to
@@ -147,6 +148,6 @@ struct dp_parser *dp_parser_get(struct platform_device *pdev);
  *
  * Return: 0 if able to get the bridge, otherwise negative errno for failure.
  */
-int dp_parser_find_next_bridge(struct dp_parser *parser);
+int devm_dp_parser_find_next_bridge(struct device *dev, struct dp_parser *parser);
 
 #endif
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
index 39bbabb5daf6..8a95c744972a 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -218,6 +218,12 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev,
 		return -EINVAL;
 
 	priv = dev->dev_private;
+
+	if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
+		DRM_DEV_ERROR(dev->dev, "too many bridges\n");
+		return -ENOSPC;
+	}
+
 	msm_dsi->dev = dev;
 
 	ret = msm_dsi_host_modeset_init(msm_dsi->host, dev);
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index 93fe61b86967..f28fb21e3891 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -300,6 +300,11 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
 	struct platform_device *pdev = hdmi->pdev;
 	int ret;
 
+	if (priv->num_bridges == ARRAY_SIZE(priv->bridges)) {
+		DRM_DEV_ERROR(dev->dev, "too many bridges\n");
+		return -ENOSPC;
+	}
+
 	hdmi->dev = dev;
 	hdmi->encoder = encoder;
 
@@ -339,7 +344,7 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
 		goto fail;
 	}
 
-	ret = devm_request_irq(&pdev->dev, hdmi->irq,
+	ret = devm_request_irq(dev->dev, hdmi->irq,
 			msm_hdmi_irq, IRQF_TRIGGER_HIGH,
 			"hdmi_isr", hdmi);
 	if (ret < 0) {
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 28034c21f6bc..105b5b48e828 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -247,6 +247,7 @@ static int msm_drm_uninit(struct device *dev)
 
 	for (i = 0; i < priv->num_bridges; i++)
 		drm_bridge_remove(priv->bridges[i]);
+	priv->num_bridges = 0;
 
 	pm_runtime_get_sync(dev);
 	msm_irq_uninstall(ddev);
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
index 5599d93ec0d2..45a3e5cadc7d 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -501,11 +501,11 @@ out:
  */
 static void submit_cleanup(struct msm_gem_submit *submit, bool error)
 {
-	unsigned cleanup_flags = BO_LOCKED | BO_OBJ_PINNED;
+	unsigned cleanup_flags = BO_LOCKED;
 	unsigned i;
 
 	if (error)
-		cleanup_flags |= BO_VMA_PINNED;
+		cleanup_flags |= BO_VMA_PINNED | BO_OBJ_PINNED;
 
 	for (i = 0; i < submit->nr_bos; i++) {
 		struct msm_gem_object *msm_obj = submit->bos[i].obj;
@@ -706,7 +706,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
 	struct msm_drm_private *priv = dev->dev_private;
 	struct drm_msm_gem_submit *args = data;
 	struct msm_file_private *ctx = file->driver_priv;
-	struct msm_gem_submit *submit = NULL;
+	struct msm_gem_submit *submit;
 	struct msm_gpu *gpu = priv->gpu;
 	struct msm_gpu_submitqueue *queue;
 	struct msm_ringbuffer *ring;
@@ -946,8 +946,7 @@ out_unlock:
 		put_unused_fd(out_fence_fd);
 	mutex_unlock(&queue->lock);
 out_post_unlock:
-	if (submit)
-		msm_gem_submit_put(submit);
+	msm_gem_submit_put(submit);
 	if (!IS_ERR_OR_NULL(post_deps)) {
 		for (i = 0; i < args->nr_out_syncobjs; ++i) {
 			kfree(post_deps[i].chain);
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 0098ee8438aa..021f4e29b613 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -997,4 +997,6 @@ void msm_gpu_cleanup(struct msm_gpu *gpu)
 	}
 
 	msm_devfreq_cleanup(gpu);
+
+	platform_set_drvdata(gpu->pdev, NULL);
 }
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index ff911e7305ce..58a72e6b1400 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -280,6 +280,10 @@ struct msm_gpu {
 static inline struct msm_gpu *dev_to_gpu(struct device *dev)
 {
 	struct adreno_smmu_priv *adreno_smmu = dev_get_drvdata(dev);
+
+	if (!adreno_smmu)
+		return NULL;
+
 	return container_of(adreno_smmu, struct msm_gpu, adreno_smmu);
 }
 
diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c
index cad4c3525f0b..57a8e9564540 100644
--- a/drivers/gpu/drm/msm/msm_ringbuffer.c
+++ b/drivers/gpu/drm/msm/msm_ringbuffer.c
@@ -25,7 +25,8 @@ static struct dma_fence *msm_job_run(struct drm_sched_job *job)
 
 		msm_gem_lock(obj);
 		msm_gem_unpin_vma_fenced(submit->bos[i].vma, fctx);
-		submit->bos[i].flags &= ~BO_VMA_PINNED;
+		msm_gem_unpin_locked(obj);
+		submit->bos[i].flags &= ~(BO_VMA_PINNED | BO_OBJ_PINNED);
 		msm_gem_unlock(obj);
 	}
 
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 2944228a8e2c..8a3b685c2fcc 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2500,6 +2500,7 @@ static const struct display_timing logictechno_lt161010_2nh_timing = {
 static const struct panel_desc logictechno_lt161010_2nh = {
 	.timings = &logictechno_lt161010_2nh_timing,
 	.num_timings = 1,
+	.bpc = 6,
 	.size = {
 		.width = 154,
 		.height = 86,
@@ -2529,6 +2530,7 @@ static const struct display_timing logictechno_lt170410_2whc_timing = {
 static const struct panel_desc logictechno_lt170410_2whc = {
 	.timings = &logictechno_lt170410_2whc_timing,
 	.num_timings = 1,
+	.bpc = 8,
 	.size = {
 		.width = 217,
 		.height = 136,
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c
index e246d914e7f6..4e83a1891f3e 100644
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
@@ -250,13 +250,22 @@ void panfrost_mmu_reset(struct panfrost_device *pfdev)
 
 static size_t get_pgsize(u64 addr, size_t size, size_t *count)
 {
+	/*
+	 * io-pgtable only operates on multiple pages within a single table
+	 * entry, so we need to split at boundaries of the table size, i.e.
+	 * the next block size up. The distance from address A to the next
+	 * boundary of block size B is logically B - A % B, but in unsigned
+	 * two's complement where B is a power of two we get the equivalence
+	 * B - A % B == (B - A) % B == (n * B - A) % B, and choose n = 0 :)
+	 */
 	size_t blk_offset = -addr % SZ_2M;
 
 	if (blk_offset || size < SZ_2M) {
 		*count = min_not_zero(blk_offset, size) / SZ_4K;
 		return SZ_4K;
 	}
-	*count = size / SZ_2M;
+	blk_offset = -addr % SZ_1G ?: SZ_1G;
+	*count = min(blk_offset, size) / SZ_2M;
 	return SZ_2M;
 }
 
diff --git a/drivers/gpu/drm/rcar-du/Kconfig b/drivers/gpu/drm/rcar-du/Kconfig
index f14686549cbe..1065dca885ef 100644
--- a/drivers/gpu/drm/rcar-du/Kconfig
+++ b/drivers/gpu/drm/rcar-du/Kconfig
@@ -42,13 +42,18 @@ config DRM_RCAR_LVDS
 	select DRM_KMS_HELPER
 	select DRM_PANEL
 
-config DRM_RCAR_MIPI_DSI
-	tristate "R-Car DU MIPI DSI Encoder Support"
-	depends on DRM && DRM_BRIDGE && OF
-	select DRM_MIPI_DSI
+config DRM_RCAR_USE_MIPI_DSI
+	bool "R-Car DU MIPI DSI Encoder Support"
+	depends on DRM_BRIDGE && OF
+	default DRM_RCAR_DU
 	help
 	  Enable support for the R-Car Display Unit embedded MIPI DSI encoders.
 
+config DRM_RCAR_MIPI_DSI
+	def_tristate DRM_RCAR_DU
+	depends on DRM_RCAR_USE_MIPI_DSI
+	select DRM_MIPI_DSI
+
 config DRM_RZG2L_MIPI_DSI
 	tristate "RZ/G2L MIPI DSI Encoder Support"
 	depends on DRM_BRIDGE && OF
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 92b599b089f9..7901c3babc8c 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -746,7 +746,7 @@ static void dw_mipi_dsi_rockchip_config(struct dw_mipi_dsi_rockchip *dsi)
 static void dw_mipi_dsi_rockchip_set_lcdsel(struct dw_mipi_dsi_rockchip *dsi,
 					    int mux)
 {
-	if (dsi->cdata->lcdsel_grf_reg < 0)
+	if (dsi->cdata->lcdsel_grf_reg)
 		regmap_write(dsi->grf_regmap, dsi->cdata->lcdsel_grf_reg,
 			mux ? dsi->cdata->lcdsel_lit : dsi->cdata->lcdsel_big);
 }
@@ -1045,23 +1045,31 @@ static int dw_mipi_dsi_rockchip_host_attach(void *priv_data,
 	if (ret) {
 		DRM_DEV_ERROR(dsi->dev, "Failed to register component: %d\n",
 					ret);
-		return ret;
+		goto out;
 	}
 
 	second = dw_mipi_dsi_rockchip_find_second(dsi);
-	if (IS_ERR(second))
-		return PTR_ERR(second);
+	if (IS_ERR(second)) {
+		ret = PTR_ERR(second);
+		goto out;
+	}
 	if (second) {
 		ret = component_add(second, &dw_mipi_dsi_rockchip_ops);
 		if (ret) {
 			DRM_DEV_ERROR(second,
 				      "Failed to register component: %d\n",
 				      ret);
-			return ret;
+			goto out;
 		}
 	}
 
 	return 0;
+
+out:
+	mutex_lock(&dsi->usage_mutex);
+	dsi->usage_mode = DW_DSI_USAGE_IDLE;
+	mutex_unlock(&dsi->usage_mutex);
+	return ret;
 }
 
 static int dw_mipi_dsi_rockchip_host_detach(void *priv_data,
@@ -1629,7 +1637,6 @@ static const struct rockchip_dw_dsi_chip_data rk3399_chip_data[] = {
 static const struct rockchip_dw_dsi_chip_data rk3568_chip_data[] = {
 	{
 		.reg = 0xfe060000,
-		.lcdsel_grf_reg = -1,
 		.lanecfg1_grf_reg = RK3568_GRF_VO_CON2,
 		.lanecfg1 = HIWORD_UPDATE(0, RK3568_DSI0_SKEWCALHS |
 					  RK3568_DSI0_FORCETXSTOPMODE |
@@ -1639,7 +1646,6 @@ static const struct rockchip_dw_dsi_chip_data rk3568_chip_data[] = {
 	},
 	{
 		.reg = 0xfe070000,
-		.lcdsel_grf_reg = -1,
 		.lanecfg1_grf_reg = RK3568_GRF_VO_CON3,
 		.lanecfg1 = HIWORD_UPDATE(0, RK3568_DSI1_SKEWCALHS |
 					  RK3568_DSI1_FORCETXSTOPMODE |
@@ -1675,5 +1681,11 @@ struct platform_driver dw_mipi_dsi_rockchip_driver = {
 		.of_match_table = dw_mipi_dsi_rockchip_dt_ids,
 		.pm	= &dw_mipi_dsi_rockchip_pm_ops,
 		.name	= "dw-mipi-dsi-rockchip",
+		/*
+		 * For dual-DSI display, one DSI pokes at the other DSI's
+		 * drvdata in dw_mipi_dsi_rockchip_find_second(). This is not
+		 * safe for asynchronous probe.
+		 */
+		.probe_type = PROBE_FORCE_SYNCHRONOUS,
 	},
 };
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index c14f88893868..2f4b8f64cbad 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -565,7 +565,8 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 
 	ret = rockchip_hdmi_parse_dt(hdmi);
 	if (ret) {
-		DRM_DEV_ERROR(hdmi->dev, "Unable to parse OF data\n");
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(hdmi->dev, "Unable to parse OF data\n");
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index bf1120e0f573..6edb7c52cb3d 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -365,9 +365,12 @@ rockchip_gem_create_with_handle(struct drm_file *file_priv,
 {
 	struct rockchip_gem_object *rk_obj;
 	struct drm_gem_object *obj;
+	bool is_framebuffer;
 	int ret;
 
-	rk_obj = rockchip_gem_create_object(drm, size, false);
+	is_framebuffer = drm->fb_helper && file_priv == drm->fb_helper->client.file;
+
+	rk_obj = rockchip_gem_create_object(drm, size, is_framebuffer);
 	if (IS_ERR(rk_obj))
 		return ERR_CAST(rk_obj);
 
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
index ad87db2fcaf6..8cecf81a5ae0 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
@@ -877,10 +877,14 @@ static void vop2_crtc_atomic_disable(struct drm_crtc *crtc,
 {
 	struct vop2_video_port *vp = to_vop2_video_port(crtc);
 	struct vop2 *vop2 = vp->vop2;
+	struct drm_crtc_state *old_crtc_state;
 	int ret;
 
 	vop2_lock(vop2);
 
+	old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
+	drm_atomic_helper_disable_planes_on_crtc(old_crtc_state, false);
+
 	drm_crtc_vblank_off(crtc);
 
 	/*
@@ -996,13 +1000,15 @@ static int vop2_plane_atomic_check(struct drm_plane *plane,
 static void vop2_plane_atomic_disable(struct drm_plane *plane,
 				      struct drm_atomic_state *state)
 {
-	struct drm_plane_state *old_pstate = drm_atomic_get_old_plane_state(state, plane);
+	struct drm_plane_state *old_pstate = NULL;
 	struct vop2_win *win = to_vop2_win(plane);
 	struct vop2 *vop2 = win->vop2;
 
 	drm_dbg(vop2->drm, "%s disable\n", win->data->name);
 
-	if (!old_pstate->crtc)
+	if (state)
+		old_pstate = drm_atomic_get_old_plane_state(state, plane);
+	if (old_pstate && !old_pstate->crtc)
 		return;
 
 	vop2_win_disable(win);
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 6748ec1e0005..a1f909dac89a 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -1093,6 +1093,10 @@ static bool host1x_drm_wants_iommu(struct host1x_device *dev)
 	struct host1x *host1x = dev_get_drvdata(dev->dev.parent);
 	struct iommu_domain *domain;
 
+	/* Our IOMMU usage policy doesn't currently play well with GART */
+	if (of_machine_is_compatible("nvidia,tegra20"))
+		return false;
+
 	/*
 	 * If the Tegra DRM clients are backed by an IOMMU, push buffers are
 	 * likely to be allocated beyond the 32-bit boundary if sufficient
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index b66bf7aea632..5990d8f8c363 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -476,7 +476,12 @@ static int __init vc4_drm_register(void)
 	if (ret)
 		return ret;
 
-	return platform_driver_register(&vc4_platform_driver);
+	ret = platform_driver_register(&vc4_platform_driver);
+	if (ret)
+		platform_unregister_drivers(component_drivers,
+					    ARRAY_SIZE(component_drivers));
+
+	return ret;
 }
 
 static void __exit vc4_drm_unregister(void)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 6b223a5fcf6f..12a00d644b61 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -349,27 +349,40 @@ static int vc4_hdmi_reset_link(struct drm_connector *connector,
 		return 0;
 
 	vc4_hdmi = connector_to_vc4_hdmi(connector);
-	if (!vc4_hdmi_supports_scrambling(vc4_hdmi))
+	mutex_lock(&vc4_hdmi->mutex);
+
+	if (!vc4_hdmi_supports_scrambling(vc4_hdmi)) {
+		mutex_unlock(&vc4_hdmi->mutex);
 		return 0;
+	}
 
 	scrambling_needed = vc4_hdmi_mode_needs_scrambling(&vc4_hdmi->saved_adjusted_mode,
 							   vc4_hdmi->output_bpc,
 							   vc4_hdmi->output_format);
-	if (!scrambling_needed)
+	if (!scrambling_needed) {
+		mutex_unlock(&vc4_hdmi->mutex);
 		return 0;
+	}
 
 	if (conn_state->commit &&
-	    !try_wait_for_completion(&conn_state->commit->hw_done))
+	    !try_wait_for_completion(&conn_state->commit->hw_done)) {
+		mutex_unlock(&vc4_hdmi->mutex);
 		return 0;
+	}
 
 	ret = drm_scdc_readb(connector->ddc, SCDC_TMDS_CONFIG, &config);
 	if (ret < 0) {
 		drm_err(drm, "Failed to read TMDS config: %d\n", ret);
+		mutex_unlock(&vc4_hdmi->mutex);
 		return 0;
 	}
 
-	if (!!(config & SCDC_SCRAMBLING_ENABLE) == scrambling_needed)
+	if (!!(config & SCDC_SCRAMBLING_ENABLE) == scrambling_needed) {
+		mutex_unlock(&vc4_hdmi->mutex);
 		return 0;
+	}
+
+	mutex_unlock(&vc4_hdmi->mutex);
 
 	/*
 	 * HDMI 2.0 says that one should not send scrambled data
@@ -397,9 +410,8 @@ static void vc4_hdmi_handle_hotplug(struct vc4_hdmi *vc4_hdmi,
 	 * .adap_enable, which leads to that funtion being called with
 	 * our mutex held.
 	 *
-	 * A similar situation occurs with
-	 * drm_atomic_helper_connector_hdmi_reset_link() that will call
-	 * into our KMS hooks if the scrambling was enabled.
+	 * A similar situation occurs with vc4_hdmi_reset_link() that
+	 * will call into our KMS hooks if the scrambling was enabled.
 	 *
 	 * Concurrency isn't an issue at the moment since we don't share
 	 * any state with any of the other frameworks so we can ignore
@@ -3169,9 +3181,16 @@ static int vc4_hdmi_init_resources(struct drm_device *drm,
 		DRM_ERROR("Failed to get HDMI state machine clock\n");
 		return PTR_ERR(vc4_hdmi->hsm_clock);
 	}
+
 	vc4_hdmi->audio_clock = vc4_hdmi->hsm_clock;
 	vc4_hdmi->cec_clock = vc4_hdmi->hsm_clock;
 
+	vc4_hdmi->hsm_rpm_clock = devm_clk_get(dev, "hdmi");
+	if (IS_ERR(vc4_hdmi->hsm_rpm_clock)) {
+		DRM_ERROR("Failed to get HDMI state machine clock\n");
+		return PTR_ERR(vc4_hdmi->hsm_rpm_clock);
+	}
+
 	return 0;
 }
 
@@ -3254,6 +3273,12 @@ static int vc5_hdmi_init_resources(struct drm_device *drm,
 		return PTR_ERR(vc4_hdmi->hsm_clock);
 	}
 
+	vc4_hdmi->hsm_rpm_clock = devm_clk_get(dev, "hdmi");
+	if (IS_ERR(vc4_hdmi->hsm_rpm_clock)) {
+		DRM_ERROR("Failed to get HDMI state machine clock\n");
+		return PTR_ERR(vc4_hdmi->hsm_rpm_clock);
+	}
+
 	vc4_hdmi->pixel_bvb_clock = devm_clk_get(dev, "bvb");
 	if (IS_ERR(vc4_hdmi->pixel_bvb_clock)) {
 		DRM_ERROR("Failed to get pixel bvb clock\n");
@@ -3317,7 +3342,7 @@ static int vc4_hdmi_runtime_suspend(struct device *dev)
 {
 	struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
 
-	clk_disable_unprepare(vc4_hdmi->hsm_clock);
+	clk_disable_unprepare(vc4_hdmi->hsm_rpm_clock);
 
 	return 0;
 }
@@ -3335,11 +3360,11 @@ static int vc4_hdmi_runtime_resume(struct device *dev)
 	 * its frequency while the power domain is active so that it
 	 * keeps its rate.
 	 */
-	ret = clk_set_min_rate(vc4_hdmi->hsm_clock, HSM_MIN_CLOCK_FREQ);
+	ret = clk_set_min_rate(vc4_hdmi->hsm_rpm_clock, HSM_MIN_CLOCK_FREQ);
 	if (ret)
 		return ret;
 
-	ret = clk_prepare_enable(vc4_hdmi->hsm_clock);
+	ret = clk_prepare_enable(vc4_hdmi->hsm_rpm_clock);
 	if (ret)
 		return ret;
 
@@ -3352,7 +3377,7 @@ static int vc4_hdmi_runtime_resume(struct device *dev)
 	 * case, it will lead to a silent CPU stall. Let's make sure we
 	 * prevent such a case.
 	 */
-	rate = clk_get_rate(vc4_hdmi->hsm_clock);
+	rate = clk_get_rate(vc4_hdmi->hsm_rpm_clock);
 	if (!rate) {
 		ret = -EINVAL;
 		goto err_disable_clk;
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index e3619836ca17..dc3ccd8002a0 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -164,6 +164,7 @@ struct vc4_hdmi {
 	struct clk *cec_clock;
 	struct clk *pixel_clock;
 	struct clk *hsm_clock;
+	struct clk *hsm_rpm_clock;
 	struct clk *audio_clock;
 	struct clk *pixel_bvb_clock;
 
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index 5c97642ed66a..8fbeecdf2ec4 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -197,8 +197,8 @@ vc4_hvs_get_new_global_state(struct drm_atomic_state *state)
 	struct drm_private_state *priv_state;
 
 	priv_state = drm_atomic_get_new_private_obj_state(state, &vc4->hvs_channels);
-	if (IS_ERR(priv_state))
-		return ERR_CAST(priv_state);
+	if (!priv_state)
+		return ERR_PTR(-EINVAL);
 
 	return to_vc4_hvs_state(priv_state);
 }
@@ -210,8 +210,8 @@ vc4_hvs_get_old_global_state(struct drm_atomic_state *state)
 	struct drm_private_state *priv_state;
 
 	priv_state = drm_atomic_get_old_private_obj_state(state, &vc4->hvs_channels);
-	if (IS_ERR(priv_state))
-		return ERR_CAST(priv_state);
+	if (!priv_state)
+		return ERR_PTR(-EINVAL);
 
 	return to_vc4_hvs_state(priv_state);
 }