Merge tag 'drm-misc-next-2025-02-27' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for v6.15:

Cross-subsystem Changes:

bus:
- mhi: Avoid access to uninitialized field

Core Changes:

- Fix docmentation

dp:
- Add helpers for LTTPR transparent mode

sched:
- Improve job peek/pop operations
- Optimize layout of struct drm_sched_job

Driver Changes:

arc:
- Convert to devm_platform_ioremap_resource()

aspeed:
- Convert to devm_platform_ioremap_resource()

bridge:
- ti-sn65dsi86: Support CONFIG_PWM tristate

i915:
- dp: Use helpers for LTTPR transparent mode

mediatek:
- Convert to devm_platform_ioremap_resource()

msm:
- dp: Use helpers for LTTPR transparent mode

nouveau:
- dp: Use helpers for LTTPR transparent mode

panel:
- raydium-rm67200: Add driver for Raydium RM67200
- simple: Add support for BOE AV123Z7M-N17, BOE AV123Z7M-N17
- sony-td4353-jdi: Use MIPI-DSI multi-func interface
- summit: Add driver for Apple Summit display panel
- visionox-rm692e5: Add driver for Visionox RM692E5

repaper:
- Fix integer overflows

stm:
- Convert to devm_platform_ioremap_resource()

vc4:
- Convert to devm_platform_ioremap_resource()

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

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20250227094041.GA114623@linux.fritz.box

45 files changed, 1680 insertions, 314 deletions

diff --git a/.mailmap b/.mailmap
index a897c16d3bae..ffb3a7e5e088 100644
--- a/.mailmap
+++ b/.mailmap
@@ -323,7 +323,8 @@ Jeff Johnson <jeff.johnson@oss.qualcomm.com> <quic_jjohnson@quicinc.com>
 Jeff Layton <jlayton@kernel.org> <jlayton@poochiereds.net>
 Jeff Layton <jlayton@kernel.org> <jlayton@primarydata.com>
 Jeff Layton <jlayton@kernel.org> <jlayton@redhat.com>
-Jeffrey Hugo <quic_jhugo@quicinc.com> <jhugo@codeaurora.org>
+Jeff Hugo <jeff.hugo@oss.qualcomm.com> <jhugo@codeaurora.org>
+Jeff Hugo <jeff.hugo@oss.qualcomm.com> <quic_jhugo@quicinc.com>
 Jens Axboe <axboe@kernel.dk> <axboe@suse.de>
 Jens Axboe <axboe@kernel.dk> <jens.axboe@oracle.com>
 Jens Axboe <axboe@kernel.dk> <axboe@fb.com>
diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple-lvds-dual-ports.yaml b/Documentation/devicetree/bindings/display/panel/panel-simple-lvds-dual-ports.yaml
index e80fc7006984..548f5ac14500 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-simple-lvds-dual-ports.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-simple-lvds-dual-ports.yaml
@@ -40,6 +40,8 @@ properties:
       - auo,g185han01
         # AU Optronics Corporation 19.0" (1280x1024) TFT LCD panel
       - auo,g190ean01
+        # BOE AV123Z7M-N17 12.3" (1920x720) LVDS TFT LCD panel
+      - boe,av123z7m-n17
         # Kaohsiung Opto-Electronics Inc. 10.1" WUXGA (1920 x 1200) LVDS TFT LCD panel
       - koe,tx26d202vm0bwa
         # Lincoln Technology Solutions, LCD185-101CT 10.1" TFT 1920x1200
diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
index e3ee3a332bb7..b0de4fd6f3d4 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
@@ -63,6 +63,8 @@ properties:
       - auo,t215hvn01
         # Shanghai AVIC Optoelectronics 7" 1024x600 color TFT-LCD panel
       - avic,tm070ddh03
+        # BOE AV101HDT-a10 10.1" 1280x720 LVDS panel
+      - boe,av101hdt-a10
         # BOE BP082WX1-100 8.2" WXGA (1280x800) LVDS panel
       - boe,bp082wx1-100
         # BOE BP101WX1-100 10.1" WXGA (1280x800) LVDS panel
diff --git a/Documentation/devicetree/bindings/display/panel/raydium,rm67200.yaml b/Documentation/devicetree/bindings/display/panel/raydium,rm67200.yaml
new file mode 100644
index 000000000000..54c9c0ef45ec
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/raydium,rm67200.yaml
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/raydium,rm67200.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Raydium RM67200 based MIPI-DSI panels
+
+maintainers:
+  - Sebastian Reichel <sebastian.reichel@collabora.com>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - wanchanglong,w552793baa
+      - const: raydium,rm67200
+
+  reg:
+    maxItems: 1
+
+  vdd-supply:
+    description: 2.8V Logic voltage
+
+  iovcc-supply:
+    description: 1.8V IO voltage
+
+  vsp-supply:
+    description: positive 5.5V voltage
+
+  vsn-supply:
+    description: negative 5.5V voltage
+
+  backlight: true
+  port: true
+  reset-gpios: true
+
+required:
+  - compatible
+  - port
+  - reg
+  - reset-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        panel@0 {
+            compatible = "wanchanglong,w552793baa", "raydium,rm67200";
+            reg = <0>;
+
+            vdd-supply = <&regulator1>;
+            iovcc-supply = <&regulator2>;
+            vsp-supply = <&regulator3>;
+            vsn-supply = <&regulator4>;
+            reset-gpios = <&gpiobank 42 GPIO_ACTIVE_LOW>;
+
+            port {
+                panel0_in: endpoint {
+                    remote-endpoint = <&dsi0_out>;
+                };
+            };
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/display/panel/visionox,rm692e5.yaml b/Documentation/devicetree/bindings/display/panel/visionox,rm692e5.yaml
new file mode 100644
index 000000000000..d4b4672815fe
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/visionox,rm692e5.yaml
@@ -0,0 +1,77 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/visionox,rm692e5.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Visionox RM692E5 6.55" 2400x1080 120Hz MIPI-DSI Panel
+
+maintainers:
+  - Danila Tikhonov <danila@jiaxyga.com>
+
+description:
+  The Visionox RM692E5 is a generic DSI Panel IC used to control
+  AMOLED panels.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - visionox,rm692e5
+      - items:
+          - enum:
+              - nothing,rm692e5-spacewar
+          - const: visionox,rm692e5
+
+  reg:
+    maxItems: 1
+
+  vdd-supply:
+    description: 3.3V source voltage rail
+
+  vddio-supply:
+    description: 1.8V I/O source voltage rail
+
+  reset-gpios: true
+  port: true
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+  - vdd-supply
+  - vddio-supply
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "nothing,rm692e5-spacewar",
+                         "visionox,rm692e5";
+            reg = <0>;
+
+            reset-gpios = <&tlmm 44 GPIO_ACTIVE_LOW>;
+
+            vdd-supply = <&vdd_oled>;
+            vddio-supply = <&vdd_io_oled>;
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&mdss_dsi0_out>;
+                };
+            };
+        };
+    };
+
+...
diff --git a/Documentation/gpu/drm-internals.rst b/Documentation/gpu/drm-internals.rst
index cb9ae282771c..94f93fd3b8a0 100644
--- a/Documentation/gpu/drm-internals.rst
+++ b/Documentation/gpu/drm-internals.rst
@@ -208,6 +208,13 @@ follows:
 	``CONFIG_VIRTIO_UML`` and ``CONFIG_UML_PCI_OVER_VIRTIO`` are not
 	included in it because they are only required for User Mode Linux.
 
+KUnit Coverage Rules
+~~~~~~~~~~~~~~~~~~~~
+
+KUnit support is gradually added to the DRM framework and helpers. There's no
+general requirement for the framework and helpers to have KUnit tests at the
+moment. However, patches that are affecting a function or helper already
+covered by KUnit tests must provide tests if the change calls for one.
 
 Legacy Support Code
 ===================
diff --git a/MAINTAINERS b/MAINTAINERS
index cddcb097f7f3..04ceba1a506c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7347,7 +7347,8 @@ T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
 F:	drivers/gpu/drm/mgag200/
 
 DRM DRIVER FOR MI0283QT
-S:	Orphan
+M:	Alex Lanzano <lanzano.alex@gmail.com>
+S:	Maintained
 T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
 F:	Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
 F:	drivers/gpu/drm/tiny/mi0283qt.c
@@ -7449,7 +7450,8 @@ F:	Documentation/devicetree/bindings/display/bridge/ps8640.yaml
 F:	drivers/gpu/drm/bridge/parade-ps8640.c
 
 DRM DRIVER FOR PERVASIVE DISPLAYS REPAPER PANELS
-S:	Orphan
+M:	Alex Lanzano <lanzano.alex@gmail.com>
+S:	Maintained
 T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
 F:	Documentation/devicetree/bindings/display/repaper.txt
 F:	drivers/gpu/drm/tiny/repaper.c
@@ -19425,7 +19427,7 @@ F:	drivers/clk/qcom/
 F:	include/dt-bindings/clock/qcom,*
 
 QUALCOMM CLOUD AI (QAIC) DRIVER
-M:	Jeffrey Hugo <quic_jhugo@quicinc.com>
+M:	Jeff Hugo <jeff.hugo@oss.qualcomm.com>
 R:	Carl Vanderlip <quic_carlv@quicinc.com>
 L:	linux-arm-msm@vger.kernel.org
 L:	dri-devel@lists.freedesktop.org
diff --git a/drivers/bus/mhi/host/boot.c b/drivers/bus/mhi/host/boot.c
index c8e48f621a8c..efa3b6dddf4d 100644
--- a/drivers/bus/mhi/host/boot.c
+++ b/drivers/bus/mhi/host/boot.c
@@ -608,7 +608,7 @@ fw_load_ready_state:
 	return;
 
 error_ready_state:
-	if (fw_load_type == MHI_FW_LOAD_FBC) {
+	if (mhi_cntrl->fbc_image) {
 		mhi_free_bhie_table(mhi_cntrl, mhi_cntrl->fbc_image);
 		mhi_cntrl->fbc_image = NULL;
 	}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index 100f04475943..1899c601c95c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -411,8 +411,24 @@ static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
 	return fence;
 }
 
-#define to_drm_sched_job(sched_job)		\
-		container_of((sched_job), struct drm_sched_job, queue_node)
+/*
+ * This is a duplicate function from DRM scheduler sched_internal.h.
+ * Plan is to remove it when amdgpu_job_stop_all_jobs_on_sched is removed, due
+ * latter being incorrect and racy.
+ *
+ * See https://lore.kernel.org/amd-gfx/44edde63-7181-44fb-a4f7-94e50514f539@amd.com/
+ */
+static struct drm_sched_job *
+drm_sched_entity_queue_pop(struct drm_sched_entity *entity)
+{
+	struct spsc_node *node;
+
+	node = spsc_queue_pop(&entity->job_queue);
+	if (!node)
+		return NULL;
+
+	return container_of(node, struct drm_sched_job, queue_node);
+}
 
 void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
 {
@@ -425,7 +441,7 @@ void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
 		struct drm_sched_rq *rq = sched->sched_rq[i];
 		spin_lock(&rq->lock);
 		list_for_each_entry(s_entity, &rq->entities, list) {
-			while ((s_job = to_drm_sched_job(spsc_queue_pop(&s_entity->job_queue)))) {
+			while ((s_job = drm_sched_entity_queue_pop(s_entity))) {
 				struct drm_sched_fence *s_fence = s_job->s_fence;
 
 				dma_fence_signal(&s_fence->scheduled);
diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
index 397e677a691c..46094cca2974 100644
--- a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
+++ b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
@@ -144,11 +144,9 @@ static int aspeed_gfx_load(struct drm_device *drm)
 	struct aspeed_gfx *priv = to_aspeed_gfx(drm);
 	struct device_node *np = pdev->dev.of_node;
 	const struct aspeed_gfx_config *config;
-	struct resource *res;
 	int ret;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->base = devm_ioremap_resource(drm->dev, res);
+	priv->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
 
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index ae34585e05b3..01d456b955ab 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -195,7 +195,7 @@ struct ti_sn65dsi86 {
 	struct gpio_chip		gchip;
 	DECLARE_BITMAP(gchip_output, SN_NUM_GPIOS);
 #endif
-#if defined(CONFIG_PWM)
+#if IS_REACHABLE(CONFIG_PWM)
 	struct pwm_chip			*pchip;
 	bool				pwm_enabled;
 	atomic_t			pwm_pin_busy;
@@ -1362,7 +1362,7 @@ static struct auxiliary_driver ti_sn_bridge_driver = {
 /* -----------------------------------------------------------------------------
  * PWM Controller
  */
-#if defined(CONFIG_PWM)
+#if IS_REACHABLE(CONFIG_PWM)
 static int ti_sn_pwm_pin_request(struct ti_sn65dsi86 *pdata)
 {
 	return atomic_xchg(&pdata->pwm_pin_busy, 1) ? -EBUSY : 0;
@@ -1956,7 +1956,7 @@ static int ti_sn65dsi86_probe(struct i2c_client *client)
 			return ret;
 	}
 
-	if (IS_ENABLED(CONFIG_PWM)) {
+	if (IS_REACHABLE(CONFIG_PWM)) {
 		ret = ti_sn65dsi86_add_aux_device(pdata, &pdata->pwm_aux, "pwm");
 		if (ret)
 			return ret;
diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c
index f5c596234729..dbce1c3f4969 100644
--- a/drivers/gpu/drm/display/drm_dp_helper.c
+++ b/drivers/gpu/drm/display/drm_dp_helper.c
@@ -2876,6 +2876,67 @@ int drm_dp_lttpr_max_link_rate(const u8 caps[DP_LTTPR_COMMON_CAP_SIZE])
 EXPORT_SYMBOL(drm_dp_lttpr_max_link_rate);
 
 /**
+ * drm_dp_lttpr_set_transparent_mode() - set the LTTPR in transparent mode
+ * @aux: DisplayPort AUX channel
+ * @enable: Enable or disable transparent mode
+ *
+ * Returns: 0 on success or a negative error code on failure.
+ */
+int drm_dp_lttpr_set_transparent_mode(struct drm_dp_aux *aux, bool enable)
+{
+	u8 val = enable ? DP_PHY_REPEATER_MODE_TRANSPARENT :
+			  DP_PHY_REPEATER_MODE_NON_TRANSPARENT;
+	int ret = drm_dp_dpcd_writeb(aux, DP_PHY_REPEATER_MODE, val);
+
+	if (ret < 0)
+		return ret;
+
+	return (ret == 1) ? 0 : -EIO;
+}
+EXPORT_SYMBOL(drm_dp_lttpr_set_transparent_mode);
+
+/**
+ * drm_dp_lttpr_init() - init LTTPR transparency mode according to DP standard
+ * @aux: DisplayPort AUX channel
+ * @lttpr_count: Number of LTTPRs. Between 0 and 8, according to DP standard.
+ *               Negative error code for any non-valid number.
+ *               See drm_dp_lttpr_count().
+ *
+ * Returns: 0 on success or a negative error code on failure.
+ */
+int drm_dp_lttpr_init(struct drm_dp_aux *aux, int lttpr_count)
+{
+	int ret;
+
+	if (!lttpr_count)
+		return 0;
+
+	/*
+	 * See DP Standard v2.0 3.6.6.1 about the explicit disabling of
+	 * non-transparent mode and the disable->enable non-transparent mode
+	 * sequence.
+	 */
+	ret = drm_dp_lttpr_set_transparent_mode(aux, true);
+	if (ret)
+		return ret;
+
+	if (lttpr_count < 0)
+		return -ENODEV;
+
+	if (drm_dp_lttpr_set_transparent_mode(aux, false)) {
+		/*
+		 * Roll-back to transparent mode if setting non-transparent
+		 * mode has failed
+		 */
+		drm_dp_lttpr_set_transparent_mode(aux, true);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_dp_lttpr_init);
+
+/**
  * drm_dp_lttpr_max_lane_count - get the maximum lane count supported by all LTTPRs
  * @caps: LTTPR common capabilities
  *
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 7a25e70694ba..5302ab324898 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -3409,6 +3409,10 @@ EXPORT_SYMBOL(drm_atomic_helper_disable_all);
  * This implies a reset of all active components available between the CRTC and
  * connectors.
  *
+ * NOTE: This relies on resetting &drm_crtc_state.connectors_changed.
+ * For drivers which optimize out unnecessary modesets this will result in
+ * a no-op commit, achieving nothing.
+ *
  * Returns:
  * 0 on success or a negative error code on failure.
  */
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 5e5c5f84daac..2e148753ea97 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -1266,25 +1266,6 @@ int mipi_dsi_dcs_set_page_address(struct mipi_dsi_device *dsi, u16 start,
 EXPORT_SYMBOL(mipi_dsi_dcs_set_page_address);
 
 /**
- * mipi_dsi_dcs_set_tear_off() - turn off the display module's Tearing Effect
- *    output signal on the TE signal line
- * @dsi: DSI peripheral device
- *
- * Return: 0 on success or a negative error code on failure
- */
-int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi)
-{
-	ssize_t err;
-
-	err = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_TEAR_OFF, NULL, 0);
-	if (err < 0)
-		return err;
-
-	return 0;
-}
-EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_off);
-
-/**
  * mipi_dsi_dcs_set_tear_on() - turn on the display module's Tearing Effect
  *    output signal on the TE signal line.
  * @dsi: DSI peripheral device
@@ -1714,6 +1695,29 @@ void mipi_dsi_turn_on_peripheral_multi(struct mipi_dsi_multi_context *ctx)
 EXPORT_SYMBOL(mipi_dsi_turn_on_peripheral_multi);
 
 /**
+ * mipi_dsi_dcs_set_tear_off_multi() - turn off the display module's Tearing Effect
+ *    output signal on the TE signal line
+ * @ctx: Context for multiple DSI transactions
+ */
+void mipi_dsi_dcs_set_tear_off_multi(struct mipi_dsi_multi_context *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	ssize_t err;
+
+	if (ctx->accum_err)
+		return;
+
+	err = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_TEAR_OFF, NULL, 0);
+	if (err < 0) {
+		ctx->accum_err = err;
+		dev_err(dev, "Failed to set tear off: %d\n",
+			ctx->accum_err);
+	}
+}
+EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_off_multi);
+
+/**
  * mipi_dsi_dcs_soft_reset_multi() - perform a software reset of the display module
  * @ctx: Context for multiple DSI transactions
  *
diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c
index f139b49af4c9..edbeab88ff2b 100644
--- a/drivers/gpu/drm/drm_writeback.c
+++ b/drivers/gpu/drm/drm_writeback.c
@@ -213,7 +213,7 @@ static void delete_writeback_properties(struct drm_device *dev)
 }
 
 /**
- * drm_writeback_connector_init_with_encoder - Initialize a writeback connector with
+ * __drm_writeback_connector_init - Initialize a writeback connector with
  * a custom encoder
  *
  * @dev: DRM device
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 11953b03bb6a..66fcd90f0028 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -119,9 +119,6 @@ intel_dp_set_lttpr_transparent_mode(struct intel_dp *intel_dp, bool enable)
 	u8 val = enable ? DP_PHY_REPEATER_MODE_TRANSPARENT :
 			  DP_PHY_REPEATER_MODE_NON_TRANSPARENT;
 
-	if (drm_dp_dpcd_write(&intel_dp->aux, DP_PHY_REPEATER_MODE, &val, 1) != 1)
-		return false;
-
 	intel_dp->lttpr_common_caps[DP_PHY_REPEATER_MODE -
 				    DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV] = val;
 
@@ -146,6 +143,7 @@ bool intel_dp_lttpr_transparent_mode_enabled(struct intel_dp *intel_dp)
 static int intel_dp_init_lttpr_phys(struct intel_dp *intel_dp, const u8 dpcd[DP_RECEIVER_CAP_SIZE])
 {
 	int lttpr_count;
+	int ret;
 
 	if (!intel_dp_read_lttpr_common_caps(intel_dp, dpcd))
 		return 0;
@@ -172,22 +170,8 @@ static int intel_dp_init_lttpr_phys(struct intel_dp *intel_dp, const u8 dpcd[DP_
 		return lttpr_count;
 	}
 
-	/*
-	 * See DP Standard v2.0 3.6.6.1. about the explicit disabling of
-	 * non-transparent mode and the disable->enable non-transparent mode
-	 * sequence.
-	 */
-	intel_dp_set_lttpr_transparent_mode(intel_dp, true);
-
-	/*
-	 * In case of unsupported number of LTTPRs or failing to switch to
-	 * non-transparent mode fall-back to transparent link training mode,
-	 * still taking into account any LTTPR common lane- rate/count limits.
-	 */
-	if (lttpr_count < 0)
-		goto out_reset_lttpr_count;
-
-	if (!intel_dp_set_lttpr_transparent_mode(intel_dp, false)) {
+	ret = drm_dp_lttpr_init(&intel_dp->aux, lttpr_count);
+	if (ret) {
 		lt_dbg(intel_dp, DP_PHY_DPRX,
 		       "Switching to LTTPR non-transparent LT mode failed, fall-back to transparent mode\n");
 
@@ -196,6 +180,8 @@ static int intel_dp_init_lttpr_phys(struct intel_dp *intel_dp, const u8 dpcd[DP_
 		goto out_reset_lttpr_count;
 	}
 
+	intel_dp_set_lttpr_transparent_mode(intel_dp, false);
+
 	return lttpr_count;
 
 out_reset_lttpr_count:
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_color.c b/drivers/gpu/drm/mediatek/mtk_disp_color.c
index dd8433a38282..39c7de4cdcc1 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_color.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_color.c
@@ -96,7 +96,6 @@ static int mtk_disp_color_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_disp_color *priv;
-	struct resource *res;
 	int ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -108,8 +107,7 @@ static int mtk_disp_color_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, PTR_ERR(priv->clk),
 				     "failed to get color clk\n");
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_ioremap_resource(dev, res);
+	priv->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->regs))
 		return dev_err_probe(dev, PTR_ERR(priv->regs),
 				     "failed to ioremap color\n");
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
index b17b11d93846..8afd15006df2 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
@@ -256,7 +256,6 @@ static int mtk_disp_gamma_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_disp_gamma *priv;
-	struct resource *res;
 	int ret;
 
 	priv = devm_kzalloc(dev, s