diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
index 8a87e0100dcb..b89e39790579 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
@@ -158,6 +158,8 @@ properties:
       - innolux,at070tn92
         # Innolux G070ACE-L01 7" WVGA (800x480) TFT LCD panel
       - innolux,g070ace-l01
+        # Innolux G070ACE-LH3 7" WVGA (800x480) TFT LCD panel with WLED backlight
+      - innolux,g070ace-lh3
         # Innolux G070Y2-L01 7" WVGA (800x480) TFT LCD panel
       - innolux,g070y2-l01
         # Innolux G070Y2-T02 7" WVGA (800x480) TFT LCD TTL panel
@@ -222,6 +224,8 @@ properties:
       - okaya,rs800480t-7x0gp
         # Olimex 4.3" TFT LCD panel
       - olimex,lcd-olinuxino-43-ts
+        # On Tat Industrial Company 5" DPI TFT panel.
+      - ontat,kd50g21-40nt-a1
         # On Tat Industrial Company 7" DPI TFT panel.
       - ontat,yx700wv03
         # OrtusTech COM37H3M05DTC Blanview 3.7" VGA portrait TFT-LCD panel
diff --git a/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml b/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml
index b348f5bf0a98..b07f3eca669b 100644
--- a/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml
+++ b/Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml
@@ -20,21 +20,19 @@ description: |
   Densitron DMT028VGHMCMI-1A is 480x640, 2-lane MIPI DSI LCD panel
   which has built-in ST7701 chip.
 
-allOf:
-  - $ref: panel-common.yaml#
-
 properties:
   compatible:
     items:
       - enum:
           - anbernic,rg-arc-panel
+          - anbernic,rg28xx-panel
           - densitron,dmt028vghmcmi-1a
           - elida,kd50t048a
           - techstar,ts8550b
       - const: sitronix,st7701
 
   reg:
-    description: DSI virtual channel used by that screen
+    description: DSI / SPI channel used by that screen
     maxItems: 1
 
   VCC-supply:
@@ -43,6 +41,13 @@ properties:
   IOVCC-supply:
     description: I/O system regulator
 
+  dc-gpios:
+    maxItems: 1
+    description:
+      Controller data/command selection (D/CX) in 4-line SPI mode.
+      If not set, the controller is in 3-line SPI mode.
+      Disallowed for DSI.
+
   port: true
   reset-gpios: true
   rotation: true
@@ -57,7 +62,38 @@ required:
   - port
   - reset-gpios
 
-additionalProperties: false
+allOf:
+  - $ref: panel-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            # SPI connected panels
+            enum:
+              - anbernic,rg28xx-panel
+    then:
+      $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+  - if:
+      properties:
+        compatible:
+          not:
+            contains:
+              # DSI or SPI without D/CX pin
+              enum:
+                - anbernic,rg-arc-panel
+                - anbernic,rg28xx-panel
+                - densitron,dmt028vghmcmi-1a
+                - elida,kd50t048a
+                - techstar,ts8550b
+    then:
+      required:
+        - dc-gpios
+    else:
+      properties:
+        dc-gpios: false
+
+unevaluatedProperties: false
 
 examples:
   - |
@@ -82,3 +118,26 @@ examples:
             };
         };
     };
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "anbernic,rg28xx-panel", "sitronix,st7701";
+            reg = <0>;
+            spi-max-frequency = <3125000>;
+            VCC-supply = <&reg_lcd>;
+            IOVCC-supply = <&reg_lcd>;
+            reset-gpios = <&pio 8 14 GPIO_ACTIVE_HIGH>; /* LCD-RST: PI14 */
+            backlight = <&backlight>;
+
+            port {
+                panel_in_rgb: endpoint {
+                    remote-endpoint = <&tcon_lcd0_out_lcd>;
+                };
+            };
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index a1537a149e9a..89699c8bd595 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18771,7 +18771,6 @@ F:	include/dt-bindings/clock/qcom,*
 QUALCOMM CLOUD AI (QAIC) DRIVER
 M:	Jeffrey Hugo <quic_jhugo@quicinc.com>
 R:	Carl Vanderlip <quic_carlv@quicinc.com>
-R:	Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
 L:	linux-arm-msm@vger.kernel.org
 L:	dri-devel@lists.freedesktop.org
 S:	Supported
diff --git a/drivers/gpu/drm/ast/Makefile b/drivers/gpu/drm/ast/Makefile
index d794c076bc24..47da848fa3fc 100644
--- a/drivers/gpu/drm/ast/Makefile
+++ b/drivers/gpu/drm/ast/Makefile
@@ -11,6 +11,8 @@ ast-y := \
 	ast_main.o \
 	ast_mm.o \
 	ast_mode.o \
-	ast_post.o
+	ast_post.o \
+	ast_sil164.o \
+	ast_vga.o
 
 obj-$(CONFIG_DRM_AST) := ast.o
diff --git a/drivers/gpu/drm/ast/ast_dp.c b/drivers/gpu/drm/ast/ast_dp.c
index ca022c287785..00b364f9a71e 100644
--- a/drivers/gpu/drm/ast/ast_dp.c
+++ b/drivers/gpu/drm/ast/ast_dp.c
@@ -4,32 +4,58 @@
 
 #include <linux/firmware.h>
 #include <linux/delay.h>
+
+#include <drm/drm_atomic_state_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+
 #include "ast_drv.h"
 
-bool ast_astdp_is_connected(struct ast_device *ast)
+static bool ast_astdp_is_connected(struct ast_device *ast)
 {
 	if (!ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xDF, AST_IO_VGACRDF_HPD))
 		return false;
 	return true;
 }
 
-int ast_astdp_read_edid(struct drm_device *dev, u8 *ediddata)
+static int ast_astdp_read_edid_block(void *data, u8 *buf, unsigned int block, size_t len)
 {
-	struct ast_device *ast = to_ast_device(dev);
+	struct ast_device *ast = data;
+	size_t rdlen = round_up(len, 4);
 	int ret = 0;
-	u8 i;
+	unsigned int i;
+
+	if (block > 0)
+		return -EIO; /* extension headers not supported */
+
+	/*
+	 * Protect access to I/O registers from concurrent modesetting
+	 * by acquiring the I/O-register lock.
+	 */
+	mutex_lock(&ast->modeset_lock);
 
 	/* Start reading EDID data */
 	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xe5, (u8)~AST_IO_VGACRE5_EDID_READ_DONE, 0x00);
 
-	for (i = 0; i < 32; i++) {
+	for (i = 0; i < rdlen; i += 4) {
+		unsigned int offset;
 		unsigned int j;
+		u8 ediddata[4];
+		u8 vgacre4;
+
+		offset = (i + block * EDID_LENGTH) / 4;
+		if (offset >= 64) {
+			ret = -EIO;
+			goto out;
+		}
+		vgacre4 = offset;
 
 		/*
 		 * CRE4[7:0]: Read-Pointer for EDID (Unit: 4bytes); valid range: 0~64
 		 */
-		ast_set_index_reg(ast, AST_IO_VGACRI, 0xe4, i);
+		ast_set_index_reg(ast, AST_IO_VGACRI, 0xe4, vgacre4);
 
 		/*
 		 * CRD7[b0]: valid flag for EDID
@@ -53,7 +79,7 @@ int ast_astdp_read_edid(struct drm_device *dev, u8 *ediddata)
 			vgacrd7 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xd7);
 			if (vgacrd7 & AST_IO_VGACRD7_EDID_VALID_FLAG) {
 				vgacrd6 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xd6);
-				if (vgacrd6 == i)
+				if (vgacrd6 == offset)
 					break;
 			}
 		}
@@ -81,7 +107,8 @@ int ast_astdp_read_edid(struct drm_device *dev, u8 *ediddata)
 			ediddata[2] = 0;
 		}
 
-		ediddata += 4;
+		memcpy(buf, ediddata, min((len - i), 4));
+		buf += 4;
 	}
 
 out:
@@ -89,6 +116,8 @@ out:
 	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xe5, (u8)~AST_IO_VGACRE5_EDID_READ_DONE,
 			       AST_IO_VGACRE5_EDID_READ_DONE);
 
+	mutex_unlock(&ast->modeset_lock);
+
 	return ret;
 }
 
@@ -120,7 +149,7 @@ int ast_dp_launch(struct ast_device *ast)
 	return 0;
 }
 
-bool ast_dp_power_is_on(struct ast_device *ast)
+static bool ast_dp_power_is_on(struct ast_device *ast)
 {
 	u8 vgacre3;
 
@@ -129,7 +158,7 @@ bool ast_dp_power_is_on(struct ast_device *ast)
 	return !(vgacre3 & AST_DP_PHY_SLEEP);
 }
 
-void ast_dp_power_on_off(struct drm_device *dev, bool on)
+static void ast_dp_power_on_off(struct drm_device *dev, bool on)
 {
 	struct ast_device *ast = to_ast_device(dev);
 	// Read and Turn off DP PHY sleep
@@ -141,9 +170,11 @@ void ast_dp_power_on_off(struct drm_device *dev, bool on)
 
 	// DP Power on/off
 	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xE3, (u8) ~AST_DP_PHY_SLEEP, bE3);
+
+	msleep(50);
 }
 
-void ast_dp_link_training(struct ast_device *ast)
+static void ast_dp_link_training(struct ast_device *ast)
 {
 	struct drm_device *dev = &ast->base;
 	int i;
@@ -161,7 +192,7 @@ void ast_dp_link_training(struct ast_device *ast)
 	drm_err(dev, "Link training failed\n");
 }
 
-void ast_dp_set_on_off(struct drm_device *dev, bool on)
+static void ast_dp_set_on_off(struct drm_device *dev, bool on)
 {
 	struct ast_device *ast = to_ast_device(dev);
 	u8 video_on_off = on;
@@ -180,7 +211,7 @@ void ast_dp_set_on_off(struct drm_device *dev, bool on)
 	}
 }
 
-void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mode)
+static void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mode)
 {
 	struct ast_device *ast = to_ast_device(crtc->dev);
 
@@ -253,3 +284,188 @@ void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mo
 	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xE1, ASTDP_AND_CLEAR_MASK, ASTDP_MISC1);
 	ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xE2, ASTDP_AND_CLEAR_MASK, ModeIdx);
 }
+
+static void ast_wait_for_vretrace(struct ast_device *ast)
+{
+	unsigned long timeout = jiffies + HZ;
+	u8 vgair1;
+
+	do {
+		vgair1 = ast_io_read8(ast, AST_IO_VGAIR1_R);
+	} while (!(vgair1 & AST_IO_VGAIR1_VREFRESH) && time_before(jiffies, timeout));
+}
+
+/*
+ * Encoder
+ */
+
+static const struct drm_encoder_funcs ast_astdp_encoder_funcs = {
+	.destroy = drm_encoder_cleanup,
+};
+
+static void ast_astdp_encoder_helper_atomic_mode_set(struct drm_encoder *encoder,
+						     struct drm_crtc_state *crtc_state,
+						     struct drm_connector_state *conn_state)
+{
+	struct drm_crtc *crtc = crtc_state->crtc;
+	struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state);
+	struct ast_vbios_mode_info *vbios_mode_info = &ast_crtc_state->vbios_mode_info;
+
+	ast_dp_set_mode(crtc, vbios_mode_info);
+}
+
+static void ast_astdp_encoder_helper_atomic_enable(struct drm_encoder *encoder,
+						   struct drm_atomic_state *state)
+{
+	struct drm_device *dev = encoder->dev;
+	struct ast_device *ast = to_ast_device(dev);
+	struct ast_connector *ast_connector = &ast->output.astdp.connector;
+
+	if (ast_connector->physical_status == connector_status_connected) {
+		ast_dp_power_on_off(dev, AST_DP_POWER_ON);
+		ast_dp_link_training(ast);
+
+		ast_wait_for_vretrace(ast);
+		ast_dp_set_on_off(dev, 1);
+	}
+}
+
+static void ast_astdp_encoder_helper_atomic_disable(struct drm_encoder *encoder,
+						    struct drm_atomic_state *state)
+{
+	struct drm_device *dev = encoder->dev;
+
+	ast_dp_set_on_off(dev, 0);
+	ast_dp_power_on_off(dev, AST_DP_POWER_OFF);
+}
+
+static const struct drm_encoder_helper_funcs ast_astdp_encoder_helper_funcs = {
+	.atomic_mode_set = ast_astdp_encoder_helper_atomic_mode_set,
+	.atomic_enable = ast_astdp_encoder_helper_atomic_enable,
+	.atomic_disable = ast_astdp_encoder_helper_atomic_disable,
+};
+
+/*
+ * Connector
+ */
+
+static int ast_astdp_connector_helper_get_modes(struct drm_connector *connector)
+{
+	struct ast_connector *ast_connector = to_ast_connector(connector);
+	int count;
+
+	if (ast_connector->physical_status == connector_status_connected) {
+		struct ast_device *ast = to_ast_device(connector->dev);
+		const struct drm_edid *drm_edid;
+
+		drm_edid = drm_edid_read_custom(connector, ast_astdp_read_edid_block, ast);
+		drm_edid_connector_update(connector, drm_edid);
+		count = drm_edid_connector_add_modes(connector);
+		drm_edid_free(drm_edid);
+	} else {
+		drm_edid_connector_update(connector, NULL);
+
+		/*
+		 * There's no EDID data without a connected monitor. Set BMC-
+		 * compatible modes in this case. The XGA default resolution
+		 * should work well for all BMCs.
+		 */
+		count = drm_add_modes_noedid(connector, 4096, 4096);
+		if (count)
+			drm_set_preferred_mode(connector, 1024, 768);
+	}
+
+	return count;
+}
+
+static int ast_astdp_connector_helper_detect_ctx(struct drm_connector *connector,
+						 struct drm_modeset_acquire_ctx *ctx,
+						 bool force)
+{
+	struct ast_connector *ast_connector = to_ast_connector(connector);
+	struct drm_device *dev = connector->dev;
+	struct ast_device *ast = to_ast_device(connector->dev);
+	enum drm_connector_status status = connector_status_disconnected;
+	bool power_is_on;
+
+	mutex_lock(&ast->modeset_lock);
+
+	power_is_on = ast_dp_power_is_on(ast);
+	if (!power_is_on)
+		ast_dp_power_on_off(dev, true);
+
+	if (ast_astdp_is_connected(ast))
+		status = connector_status_connected;
+
+	if (!power_is_on && status == connector_status_disconnected)
+		ast_dp_power_on_off(dev, false);
+
+	mutex_unlock(&ast->modeset_lock);
+
+	if (status != ast_connector->physical_status)
+		++connector->epoch_counter;
+	ast_connector->physical_status = status;
+
+	return connector_status_connected;
+}
+
+static const struct drm_connector_helper_funcs ast_astdp_connector_helper_funcs = {
+	.get_modes = ast_astdp_connector_helper_get_modes,
+	.detect_ctx = ast_astdp_connector_helper_detect_ctx,
+};
+
+static const struct drm_connector_funcs ast_astdp_connector_funcs = {
+	.reset = drm_atomic_helper_connector_reset,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int ast_astdp_connector_init(struct drm_device *dev, struct drm_connector *connector)
+{
+	int ret;
+
+	ret = drm_connector_init(dev, connector, &ast_astdp_connector_funcs,
+				 DRM_MODE_CONNECTOR_DisplayPort);
+	if (ret)
+		return ret;
+
+	drm_connector_helper_add(connector, &ast_astdp_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+
+	return 0;
+}
+
+int ast_astdp_output_init(struct ast_device *ast)
+{
+	struct drm_device *dev = &ast->base;
+	struct drm_crtc *crtc = &ast->crtc;
+	struct drm_encoder *encoder = &ast->output.astdp.encoder;
+	struct ast_connector *ast_connector = &ast->output.astdp.connector;
+	struct drm_connector *connector = &ast_connector->base;
+	int ret;
+
+	ret = drm_encoder_init(dev, encoder, &ast_astdp_encoder_funcs,
+			       DRM_MODE_ENCODER_TMDS, NULL);
+	if (ret)
+		return ret;
+	drm_encoder_helper_add(encoder, &ast_astdp_encoder_helper_funcs);
+
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
+
+	ret = ast_astdp_connector_init(dev, connector);
+	if (ret)
+		return ret;
+	ast_connector->physical_status = connector->status;
+
+	ret = drm_connector_attach_encoder(connector, encoder);
+	if (ret)
+		return ret;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/ast/ast_dp501.c b/drivers/gpu/drm/ast/ast_dp501.c
index 9a4c3a0963f9..e4c636f45082 100644
--- a/drivers/gpu/drm/ast/ast_dp501.c
+++ b/drivers/gpu/drm/ast/ast_dp501.c
@@ -4,6 +4,11 @@
 #include <linux/firmware.h>
 #include <linux/module.h>
 
+#include <drm/drm_atomic_state_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_probe_helper.h>
+
 #include "ast_drv.h"
 
 MODULE_FIRMWARE("ast_dp501_fw.bin");
@@ -170,7 +175,7 @@ static void clear_cmd(struct ast_device *ast)
 }
 #endif
 
-void ast_set_dp501_video_output(struct drm_device *dev, u8 mode)
+static void ast_set_dp501_video_output(struct drm_device *dev, u8 mode)
 {
 	ast_write_cmd(dev, 0x40);
 	ast_write_data(dev, mode);
@@ -272,7 +277,7 @@ static bool ast_launch_m68k(struct drm_device *dev)
 	return true;
 }
 
-bool ast_dp501_is_connected(struct ast_device *ast)
+static bool ast_dp501_is_connected(struct ast_device *ast)
 {
 	u32 boot_address, offset, data;
 
@@ -313,32 +318,30 @@ bool ast_dp501_is_connected(struct ast_device *ast)
 	return true;
 }
 
-bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata)
+static int ast_dp512_read_edid_block(void *data, u8 *buf, unsigned int block, size_t len)
 {
-	struct ast_device *ast = to_ast_device(dev);
-	u32 i, boot_address, offset, data;
-	u32 *pEDIDidx;
+	struct ast_device *ast = data;
+	size_t rdlen = round_up(len, 4);
+	u32 i, boot_address, offset, ediddata;
 
-	if (!ast_dp501_is_connected(ast))
-		return false;
+	if (block > (512 / EDID_LENGTH))
+		return -EIO;
+
+	offset = AST_DP501_EDID_DATA + block * EDID_LENGTH;
 
 	if (ast->config_mode == ast_use_p2a) {
 		boot_address = get_fw_base(ast);
 
-		/* Read EDID */
-		offset = AST_DP501_EDID_DATA;
-		for (i = 0; i < 128; i += 4) {
-			data = ast_mindwm(ast, boot_address + offset + i);
-			pEDIDidx = (u32 *)(ediddata + i);
-			*pEDIDidx = data;
+		for (i = 0; i < rdlen; i += 4) {
+			ediddata = ast_mindwm(ast, boot_address + offset + i);
+			memcpy(buf, &ediddata, min((len - i), 4));
+			buf += 4;
 		}
 	} else {
-		/* Read EDID */
-		offset = AST_DP501_EDID_DATA;
-		for (i = 0; i < 128; i += 4) {
-			data = readl(ast->dp501_fw_buf + offset + i);
-			pEDIDidx = (u32 *)(ediddata + i);
-			*pEDIDidx = data;
+		for (i = 0; i < rdlen; i += 4) {
+			ediddata = readl(ast->dp501_fw_buf + offset + i);
+			memcpy(buf, &ediddata, min((len - i), 4));
+			buf += 4;
 		}
 	}
 
@@ -470,3 +473,144 @@ void ast_init_3rdtx(struct drm_device *dev)
 		}
 	}
 }
+
+/*
+ * Encoder
+ */
+
+static const struct drm_encoder_funcs ast_dp501_encoder_funcs = {
+	.destroy = drm_encoder_cleanup,
+};
+
+static void ast_dp501_encoder_helper_atomic_enable(struct drm_encoder *encoder,
+						   struct drm_atomic_state *state)
+{
+	struct drm_device *dev = encoder->dev;
+
+	ast_set_dp501_video_output(dev, 1);
+}
+
+static void ast_dp501_encoder_helper_atomic_disable(struct drm_encoder *encoder,
+						    struct drm_atomic_state *state)
+{
+	struct drm_device *dev = encoder->dev;
+
+	ast_set_dp501_video_output(dev, 0);
+}
+
+static const struct drm_encoder_helper_funcs ast_dp501_encoder_helper_funcs = {
+	.atomic_enable = ast_dp501_encoder_helper_atomic_enable,
+	.atomic_disable = ast_dp501_encoder_helper_atomic_disable,
+};
+
+/*
+ * Connector
+ */
+
+static int ast_dp501_connector_helper_get_modes(struct drm_connector *connector)
+{
+	struct ast_connector *ast_connector = to_ast_connector(connector);
+	int count;
+
+	if (ast_connector->physical_status == connector_status_connected) {
+		struct ast_device *ast = to_ast_device(connector->dev);
+		const struct drm_edid *drm_edid;
+
+		drm_edid = drm_edid_read_custom(connector, ast_dp512_read_edid_block, ast);
+		drm_edid_connector_update(connector, drm_edid);
+		count = drm_edid_connector_add_modes(connector);
+		drm_edid_free(drm_edid);
+	} else {
+		drm_edid_connector_update(connector, NULL);
+
+		/*
+		 * There's no EDID data without a connected monitor. Set BMC-
+		 * compatible modes in this case. The XGA default resolution
+		 * should work well for all BMCs.
+		 */
+		count = drm_add_modes_noedid(connector, 4096, 4096);
+		if (count)
+			drm_set_preferred_mode(connector, 1024, 768);
+	}
+
+	return count;
+}
+
+static int ast_dp501_connector_helper_detect_ctx(struct drm_connector *connector,
+						 struct drm_modeset_acquire_ctx *ctx,
+						 bool force)
+{
+	struct ast_connector *ast_connector = to_ast_connector(connector);
+	struct ast_device *ast = to_ast_device(connector->dev);
+	enum drm_connector_status status = connector_status_disconnected;
+
+	if (ast_dp501_is_connected(ast))
+		status = connector_status_connected;
+
+	if (status != ast_connector->physical_status)
+		++connector->epoch_counter;
+	ast_connector->physical_status = status;
+
+	return connector_status_connected;
+}
+
+static const struct drm_connector_helper_funcs ast_dp501_connector_helper_funcs = {
+	.get_modes = ast_dp501_connector_helper_get_modes,
+	.detect_ctx = ast_dp501_connector_helper_detect_ctx,
+};
+
+static const struct drm_connector_funcs ast_dp501_connector_funcs = {
+	.reset = drm_atomic_helper_connector_reset,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int ast_dp501_connector_init(struct drm_device *dev, struct drm_connector *connector)
+{
+	int ret;
+
+	ret = drm_connector_init(dev, connector, &ast_dp501_connector_funcs,
+				 DRM_MODE_CONNECTOR_DisplayPort);
+	if (ret)
+		return ret;
+
+	drm_connector_helper_add(connector, &ast_dp501_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+
+	return 0;
+}
+
+int ast_dp501_output_init(struct ast_device *ast)
+{
+	struct drm_device *dev = &ast->base;
+	struct drm_crtc *crtc = &ast->crtc;
+	struct drm_encoder *encoder = &ast->output.dp501.encoder;
+	struct ast_connector *ast_connector = &ast->output.dp501.connector;
+	struct drm_connector *connector = &ast_connector->base;
+	int ret;
+
+	ret = drm_encoder_init(dev, encoder, &ast_dp501_encoder_funcs,
+			       DRM_MODE_ENCODER_TMDS, NULL);
+	if (ret)
+		return ret;
+	drm_encoder_helper_add(encoder, &ast_dp501_encoder_helper_funcs);
+
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
+
+	ret = ast_dp501_connector_init(dev, connector);
+	if (ret)
+		return ret;
+	ast_connector->physical_status = connector->status;
+
+	ret = drm_connector_attach_encoder(connector, encoder);
+	if (ret)
+		return ret;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index d23b98ce4359..91fe07cf7b07 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -147,18 +147,19 @@ static inline struct ast_plane *to_ast_plane(struct drm_plane *plane)
 }
 
 /*
- * BMC
+ * Connector
  */
 
-struct ast_bmc_connector {
+struct ast_connector {
 	struct drm_connector base;
-	struct drm_connector *physical_connector;
+
+	enum drm_connector_status physical_status;
 };
 
-static inline struct ast_bmc_connector *
-to_ast_bmc_connector(struct drm_connector *connector)
+static inline struct ast_connector *
+to_ast_connector(struct drm_connector *connector)
 {
-	return container_of(connector, struct ast_bmc_connector, base);
+	return container_of(connector, struct ast_connector, base);
 }
 
 /*
@@ -192,24 +193,20 @@ struct ast_device {
 	struct {
 		struct {
 			struct drm_encoder encoder;
-			struct drm_connector connector;
+			struct ast_connector connector;
 		} vga;
 		struct {
 			struct drm_encoder encoder;
-			struct drm_connector connector;
+			struct ast_connector connector;
 		} sil164;
 		struct {
 			struct drm_encoder encoder;
-			struct drm_connector connector;
+			struct ast_connector connector;
 		} dp501;
 		struct {
 			struct drm_encoder encoder;
-			struct drm_connector connector;
+			struct ast_connector connector;
 		} astdp;
-		struct {
-			struct drm_encoder encoder;
-			struct ast_bmc_connector bmc_connector;
-		} bmc;
 	} output;
 
 	bool support_wide_screen;
@@ -460,22 +457,17 @@ void ast_post_gpu(struct drm_device *dev);
 u32 ast_mindwm(struct ast_device *ast, u32 r);
 void ast_moutdwm(struct ast_device *ast, u32 r, u32 v);
 void ast_patch_ahb_2500(void __iomem *regs);
+
+int ast_vga_output_init(struct ast_device *ast);
+int ast_sil164_output_init(struct ast_device *ast);
+
 /* ast dp501 */
-void ast_set_dp501_video_output(struct drm_device *dev, u8 mode);
 bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size);
-bool ast_dp501_is_connected(struct ast_device *ast);
-bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata);
-u8 ast_get_dp501_max_clk(struct drm_device *dev);
 void ast_init_3rdtx(struct drm_device *dev);
+int ast_dp501_output_init(struct ast_device *ast);
 
 /* aspeed DP */
-bool ast_astdp_is_connected(struct ast_device *ast);
-int ast_astdp_read_edid(struct drm_device *dev, u8 *ediddata);
 int ast_dp_launch(struct ast_device *ast);
-bool ast_dp_power_is_on(struct ast_device *ast);
-void ast_dp_power_on_off(struct drm_device *dev, bool no);
-void ast_dp_link_training(struct ast_device *ast);
-void ast_dp_set_on_off(struct drm_device *dev, bool no);
-void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mode);
+int ast_astdp_output_init(struct ast_device *ast);
 
 #endif
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index ddb7696acc04..ed496fb32bf3 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -34,10 +34,8 @@
 
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
-#include <drm/drm_atomic_state_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_damage_helper.h>
-#include <drm/drm_edid.h>
 #include <drm/drm_format_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_gem_atomic_helper.h>
@@ -47,7 +45,6 @@
 #include <drm/drm_panic.h>
 #include <drm/drm_probe_helper.h>
 
-#include "ast_ddc.h"
 #include "ast_drv.h"
 #include "ast_tables.h"
 
@@ -1310,573 +1307,6 @@ static int ast_crtc_init(struct drm_device *dev)
 	return 0;
 }
 
-/*
- * VGA Encoder
- */
-
-static const struct drm_encoder_funcs ast_vga_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
-/*
- * VGA Connector
- */
-
-static const struct drm_connector_helper_funcs ast_vga_connector_helper_funcs = {
-	.get_modes = drm_connector_helper_get_modes,
-	.detect_ctx = drm_connector_helper_detect_from_ddc,
-};
-
-static const struct drm_connector_funcs ast_vga_connector_funcs = {
-	.reset = drm_atomic_helper_connector_reset,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_connector_cleanup,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int ast_vga_connector_init(struct drm_device *dev, struct drm_connector *connector)
-{
-	struct ast_device *ast = to_ast_device(dev);
-	struct i2c_adapter *ddc;
-	int ret;
-
-	ddc = ast_ddc_create(ast);
-	if (IS_ERR(ddc)) {
-		ret = PTR_ERR(ddc);
-		drm_err(dev, "failed to add DDC bus for connector; ret=%d\n", ret);
-		return ret;
-	}
-
-	ret = drm_connector_init_with_ddc(dev, connector, &ast_vga_connector_funcs,
-					  DRM_MODE_CONNECTOR_VGA, ddc);
-	if (ret)
-		return ret;
-
-	drm_connector_helper_add(connector, &ast_vga_connector_helper_funcs);
-
-	connector->interlace_allowed = 0;
-	connector->doublescan_allowed = 0;
-
-	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
-
-	return 0;
-}
-
-static int ast_vga_output_init(struct ast_device *ast)
-{
-	struct drm_device *dev = &ast->base;
-	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.vga.encoder;
-	struct drm_connector *connector = &ast->output.vga.connector;
-	int ret;
-
-	ret = drm_encoder_init(dev, encoder, &ast_vga_encoder_funcs,
-			       DRM_MODE_ENCODER_DAC, NULL);
-	if (ret)
-		return ret;
-	encoder->possible_crtcs = drm_crtc_mask(crtc);
-
-	ret = ast_vga_connector_init(dev, connector);
-	if (ret)
-		return ret;
-
-	ret = drm_connector_attach_encoder(connector, encoder);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-/*
- * SIL164 Encoder
- */
-
-static const struct drm_encoder_funcs ast_sil164_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
-/*
- * SIL164 Connector
- */
-
-static const struct drm_connector_helper_funcs ast_sil164_connector_helper_funcs = {
-	.get_modes = drm_connector_helper_get_modes,
-	.detect_ctx = drm_connector_helper_detect_from_ddc,
-};
-
-static const struct drm_connector_funcs ast_sil164_connector_funcs = {
-	.reset = drm_atomic_helper_connector_reset,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_connector_cleanup,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int ast_sil164_connector_init(struct drm_device *dev, struct drm_connector *connector)
-{
-	struct ast_device *ast = to_ast_device(dev);
-	struct i2c_adapter *ddc;
-	int ret;
-
-	ddc = ast_ddc_create(ast);
-	if (IS_ERR(ddc)) {
-		ret = PTR_ERR(ddc);
-		drm_err(dev, "failed to add DDC bus for connector; ret=%d\n", ret);
-		return ret;
-	}
-
-	ret = drm_connector_init_with_ddc(dev, connector, &ast_sil164_connector_funcs,
-					  DRM_MODE_CONNECTOR_DVII, ddc);
-	if (ret)
-		return ret;
-
-	drm_connector_helper_add(connector, &ast_sil164_connector_helper_funcs);
-
-	connector->interlace_allowed = 0;
-	connector->doublescan_allowed = 0;
-
-	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
-
-	return 0;
-}
-
-static int ast_sil164_output_init(struct ast_device *ast)
-{
-	struct drm_device *dev = &ast->base;
-	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.sil164.encoder;
-	struct drm_connector *connector = &ast->output.sil164.connector;
-	int ret;
-
-	ret = drm_encoder_init(dev, encoder, &ast_sil164_encoder_funcs,
-			       DRM_MODE_ENCODER_TMDS, NULL);
-	if (ret)
-		return ret;
-	encoder->possible_crtcs = drm_crtc_mask(crtc);
-
-	ret = ast_sil164_connector_init(dev, connector);
-	if (ret)
-		return ret;
-
-	ret = drm_connector_attach_encoder(connector, encoder);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-/*
- * DP501 Encoder
- */
-
-static const struct drm_encoder_funcs ast_dp501_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
-static void ast_dp501_encoder_helper_atomic_enable(struct drm_encoder *encoder,
-						   struct drm_atomic_state *state)
-{
-	struct drm_device *dev = encoder->dev;
-
-	ast_set_dp501_video_output(dev, 1);
-}
-
-static void ast_dp501_encoder_helper_atomic_disable(struct drm_encoder *encoder,
-						    struct drm_atomic_state *state)
-{
-	struct drm_device *dev = encoder->dev;
-
-	ast_set_dp501_video_output(dev, 0);
-}
-
-static const struct drm_encoder_helper_funcs ast_dp501_encoder_helper_funcs = {
-	.atomic_enable = ast_dp501_encoder_helper_atomic_enable,
-	.atomic_disable = ast_dp501_encoder_helper_atomic_disable,
-};
-
-/*
- * DP501 Connector
- */
-
-static int ast_dp501_connector_helper_get_modes(struct drm_connector *connector)
-{
-	void *edid;
-	bool succ;
-	int count;
-
-	edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
-	if (!edid)
-		goto err_drm_connector_update_edid_property;
-
-	succ = ast_dp501_read_edid(connector->dev, edid);
-	if (!succ)
-		goto err_kfree;
-
-	drm_connector_update_edid_property(connector, edid);
-	count = drm_add_edid_modes(connector, edid);
-	kfree(edid);
-
-	return count;
-
-err_kfree:
-	kfree(edid);
-err_drm_connector_update_edid_property:
-	drm_connector_update_edid_property(connector, NULL);
-	return 0;
-}
-
-static int ast_dp501_connector_helper_detect_ctx(struct drm_connector *connector,
-						 struct drm_modeset_acquire_ctx *ctx,
-						 bool force)
-{
-	struct ast_device *ast = to_ast_device(connector->dev);
-
-	if (ast_dp501_is_connected(ast))
-		return connector_status_connected;
-	return connector_status_disconnected;
-}
-
-static const struct drm_connector_helper_funcs ast_dp501_connector_helper_funcs = {
-	.get_modes = ast_dp501_connector_helper_get_modes,
-	.detect_ctx = ast_dp501_connector_helper_detect_ctx,
-};
-
-static const struct drm_connector_funcs ast_dp501_connector_funcs = {
-	.reset = drm_atomic_helper_connector_reset,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_connector_cleanup,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int ast_dp501_connector_init(struct drm_device *dev, struct drm_connector *connector)
-{
-	int ret;
-
-	ret = drm_connector_init(dev, connector, &ast_dp501_connector_funcs,
-				 DRM_MODE_CONNECTOR_DisplayPort);
-	if (ret)
-		return ret;
-
-	drm_connector_helper_add(connector, &ast_dp501_connector_helper_funcs);
-
-	connector->interlace_allowed = 0;
-	connector->doublescan_allowed = 0;
-
-	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
-
-	return 0;
-}
-
-static int ast_dp501_output_init(struct ast_device *ast)
-{
-	struct drm_device *dev = &ast->base;
-	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.dp501.encoder;
-	struct drm_connector *connector = &ast->output.dp501.connector;
-	int ret;
-
-	ret = drm_encoder_init(dev, encoder, &ast_dp501_encoder_funcs,
-			       DRM_MODE_ENCODER_TMDS, NULL);
-	if (ret)
-		return ret;
-	drm_encoder_helper_add(encoder, &ast_dp501_encoder_helper_funcs);
-
-	encoder->possible_crtcs = drm_crtc_mask(crtc);
-
-	ret = ast_dp501_connector_init(dev, connector);
-	if (ret)
-		return ret;
-
-	ret = drm_connector_attach_encoder(connector, encoder);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-/*
- * ASPEED Display-Port Encoder
- */
-
-static const struct drm_encoder_funcs ast_astdp_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
-static void ast_astdp_encoder_helper_atomic_mode_set(struct drm_encoder *encoder,
-						     struct drm_crtc_state *crtc_state,
-						     struct drm_connector_state *conn_state)
-{
-	struct drm_crtc *crtc = crtc_state->crtc;
-	struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state);
-	struct ast_vbios_mode_info *vbios_mode_info = &ast_crtc_state->vbios_mode_info;
-
-	ast_dp_set_mode(crtc, vbios_mode_info);
-}
-
-static void ast_astdp_encoder_helper_atomic_enable(struct drm_encoder *encoder,
-						   struct drm_atomic_state *state)
-{
-	struct drm_device *dev = encoder->dev;
-	struct ast_device *ast = to_ast_device(dev);
-
-	ast_dp_power_on_off(dev, AST_DP_POWER_ON);
-	ast_dp_link_training(ast);
-
-	ast_wait_for_vretrace(ast);
-	ast_dp_set_on_off(dev, 1);
-}
-
-static void ast_astdp_encoder_helper_atomic_disable(struct drm_encoder *encoder,
-						    struct drm_atomic_state *state)
-{
-	struct drm_device *dev = encoder->dev;
-
-	ast_dp_set_on_off(dev, 0);
-	ast_dp_power_on_off(dev, AST_DP_POWER_OFF);
-}
-
-static const struct drm_encoder_helper_funcs ast_astdp_encoder_helper_funcs = {
-	.atomic_mode_set = ast_astdp_encoder_helper_atomic_mode_set,
-	.atomic_enable = ast_astdp_encoder_helper_atomic_enable,
-	.atomic_disable = ast_astdp_encoder_helper_atomic_disable,
-};
-
-/*
- * ASPEED Display-Port Connector
- */
-
-static int ast_astdp_connector_helper_get_modes(struct drm_connector *connector)
-{
-	void *edid;
-	struct drm_device *dev = connector->dev;
-	struct ast_device *ast = to_ast_device(dev);
-
-	int succ;
-	int count;
-
-	edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
-	if (!edid)
-		goto err_drm_connector_update_edid_property;
-
-	/*
-	 * Protect access to I/O registers from concurrent modesetting
-	 * by acquiring the I/O-register lock.
-	 */
-	mutex_lock(&ast->modeset_lock);
-
-	succ = ast_astdp_read_edid(connector->dev, edid);
-	if (succ < 0)
-		goto err_mutex_unlock;
-
-	mutex_unlock(&ast->modeset_lock);
-
-	drm_connector_update_edid_property(connector, edid);
-	count = drm_add_edid_modes(connector, edid);
-	kfree(edid);
-
-	return count;
-
-err_mutex_unlock:
-	mutex_unlock(&ast->modeset_lock);
-	kfree(edid);
-err_drm_connector_update_edid_property:
-	drm_connector_update_edid_property(connector, NULL);
-	return 0;
-}
-
-static int ast_astdp_connector_helper_detect_ctx(struct drm_connector *connector,
-						 struct drm_modeset_acquire_ctx *ctx,
-						 bool force)
-{
-	struct drm_device *dev = connector->dev;
-	struct ast_device *ast = to_ast_device(connector->dev);
-	enum drm_connector_status status = connector_status_disconnected;
-	struct drm_connector_state *connector_state = connector->state;
-	bool is_active = false;
-
-	mutex_lock(&ast->modeset_lock);
-
-	if (connector_state && connector_state->crtc) {
-		struct drm_crtc_state *crtc_state = connector_state->crtc->state;
-
-		if (crtc_state && crtc_state->active)
-			is_active = true;
-	}
-
-	if (!is_active && !ast_dp_power_is_on(ast)) {
-		ast_dp_power_on_off(dev, true);
-		msleep(50);
-	}
-
-	if (ast_astdp_is_connected(ast))
-		status = connector_status_connected;
-
-	if (!is_active && status == connector_status_disconnected)
-		ast_dp_power_on_off(dev, false);
-
-	mutex_unlock(&ast->modeset_lock);
-
-	return status;
-}
-
-static const struct drm_connector_helper_funcs ast_astdp_connector_helper_funcs = {
-	.get_modes = ast_astdp_connector_helper_get_modes,
-	.detect_ctx = ast_astdp_connector_helper_detect_ctx,
-};
-
-static const struct drm_connector_funcs ast_astdp_connector_funcs = {
-	.reset = drm_atomic_helper_connector_reset,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_connector_cleanup,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int ast_astdp_connector_init(struct drm_device *dev, struct drm_connector *connector)
-{
-	int ret;
-
-	ret = drm_connector_init(dev, connector, &ast_astdp_connector_funcs,
-				 DRM_MODE_CONNECTOR_DisplayPort);
-	if (ret)
-		return ret;
-
-	drm_connector_helper_add(connector, &ast_astdp_connector_helper_funcs);
-
-	connector->interlace_allowed = 0;
-	connector->doublescan_allowed = 0;
-
-	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
-
-	return 0;
-}
-
-static int ast_astdp_output_init(struct ast_device *ast)
-{
-	struct drm_device *dev = &ast->base;
-	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.astdp.encoder;
-	struct drm_connector *connector = &ast->output.astdp.connector;
-	int ret;
-
-	ret = drm_encoder_init(dev, encoder, &ast_astdp_encoder_funcs,
-			       DRM_MODE_ENCODER_TMDS, NULL);
-	if (ret)
-		return ret;
-	drm_encoder_helper_add(encoder, &ast_astdp_encoder_helper_funcs);
-
-	encoder->possible_crtcs = drm_crtc_mask(crtc);
-
-	ret = ast_astdp_connector_init(dev, connector);
-	if (ret)
-		return ret;
-
-	ret = drm_connector_attach_encoder(connector, encoder);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-/*
- * BMC virtual Connector
- */
-
-static const struct drm_encoder_funcs ast_bmc_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
-static int ast_bmc_connector_helper_detect_ctx(struct drm_connector *connector,
-					       struct drm_modeset_acquire_ctx *ctx,
-					       bool force)
-{
-	struct ast_bmc_connector *bmc_connector = to_ast_bmc_connector(connector);
-	struct drm_connector *physical_connector = bmc_connector->physical_connector;
-
-	/*
-	 * Most user-space compositors cannot handle more than one connected
-	 * connector per CRTC. Hence, we only mark the BMC as connected if the
-	 * physical connector is disconnected. If the physical connector's status
-	 * is connected or unknown, the BMC remains disconnected. This has no
-	 * effect on the output of the BMC.
-	 *
-	 * FIXME: Remove this logic once user-space compositors can handle more
-	 *        than one connector per CRTC. The BMC should always be connected.
-	 */
-
-	if (physical_connector && physical_connector->status == connector_status_disconnected)
-		return connector_status_connected;
-
-	return connector_status_disconnected;
-}
-
-static int ast_bmc_connector_helper_get_modes(struct drm_connector *connector)
-{
-	return drm_add_modes_noedid(connector, 4096, 4096);
-}
-
-static const struct drm_connector_helper_funcs ast_bmc_connector_helper_funcs = {
-	.get_modes = ast_bmc_connector_helper_get_modes,
-	.detect_ctx = ast_bmc_connector_helper_detect_ctx,
-};
-
-static const struct drm_connector_funcs ast_bmc_connector_funcs = {
-	.reset = drm_atomic_helper_connector_reset,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = drm_connector_cleanup,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int ast_bmc_connector_init(struct drm_device *dev,
-				  struct ast_bmc_connector *bmc_connector,
-				  struct drm_connector *physical_connector)
-{
-	struct drm_connector *connector = &bmc_connector->base;
-	int ret;
-
-	ret = drm_connector_init(dev, connector, &ast_bmc_connector_funcs,
-				 DRM_MODE_CONNECTOR_VIRTUAL);
-	if (ret)
-		return ret;
-
-	drm_connector_helper_add(connector, &ast_bmc_connector_helper_funcs);
-
-	bmc_connector->physical_connector = physical_connector;
-
-	return 0;
-}
-
-static int ast_bmc_output_init(struct ast_device *ast,
-			       struct drm_connector *physical_connector)
-{
-	struct drm_device *dev = &ast->base;
-	struct drm_crtc *crtc = &ast->crtc;
-	struct drm_encoder *encoder = &ast->output.bmc.encoder;
-	struct ast_bmc_connector *bmc_connector = &ast->output.bmc.bmc_connector;
-	struct drm_connector *connector = &bmc_connector->base;
-	int ret;
-
-	ret = drm_encoder_init(dev, encoder,
-			       &ast_bmc_encoder_funcs,
-			       DRM_MODE_ENCODER_VIRTUAL, "ast_bmc");
-	if (ret)
-		return ret;
-	encoder->possible_crtcs = drm_crtc_mask(crtc);
-
-	ret = ast_bmc_connector_init(dev, bmc_connector, physical_connector);
-	if (ret)
-		return ret;
-
-	ret = drm_connector_attach_encoder(connector, encoder);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
 /*
  * Mode config
  */
@@ -1928,7 +1358,6 @@ static const struct drm_mode_config_funcs ast_mode_config_funcs = {
 int ast_mode_config_init(struct ast_device *ast)
 {
 	struct drm_device *dev = &ast->base;
-	struct drm_connector *physical_connector = NULL;
 	int ret;
 
 	ret = drmm_mutex_init(dev, &ast->modeset_lock);
@@ -1973,29 +1402,22 @@ int ast_mode_config_init(struct ast_device *ast)
 		ret = ast_vga_output_init(ast);
 		if (ret)
 			return ret;
-		physical_connector = &ast->output.vga.connector;
 	}
 	if (ast->tx_chip_types & AST_TX_SIL164_BIT) {
 		ret = ast_sil164_output_init(ast);
 		if (ret)
 			return ret;
-		physical_connector = &ast->output.sil164.connector;
 	}
 	if (ast->tx_chip_types & AST_TX_DP501_BIT) {
 		ret = ast_dp501_output_init(ast);
 		if (ret)
 			return ret;
-		physical_connector = &ast->output.dp501.connector;
 	}
 	if (ast->tx_chip_types & AST_TX_ASTDP_BIT) {
 		ret = ast_astdp_output_init(ast);
 		if (ret)
 			return ret;
-		physical_connector = &ast->output.astdp.connector;
 	}
-	ret = ast_bmc_output_init(ast, physical_connector);
-	if (ret)
-		return ret;
 
 	drm_mode_config_reset(dev);
 
diff --git a/drivers/gpu/drm/ast/ast_sil164.c b/drivers/gpu/drm/ast/ast_sil164.c
new file mode 100644
index 000000000000..496c7120e515
--- /dev/null
+++ b/drivers/gpu/drm/ast/ast_sil164.c
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: MIT
+
+#include <drm/drm_atomic_state_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+
+#include "ast_ddc.h"
+#include "ast_drv.h"
+
+/*
+ * Encoder
+ */
+
+static const struct drm_encoder_funcs ast_sil164_encoder_funcs = {
+	.destroy = drm_encoder_cleanup,
+};
+
+/*
+ * Connector
+ */
+
+static int ast_sil164_connector_helper_get_modes(struct drm_connector *connector)
+{
+	struct ast_connector *ast_connector = to_ast_connector(connector);
+	int count;
+
+	if (ast_connector->physical_status == connector_status_connected) {
+		count = drm_connector_helper_get_modes(connector);
+	} else {
+		/*
+		 * There's no EDID data without a connected monitor. Set BMC-
+		 * compatible modes in this case. The XGA default resolution
+		 * should work well for all BMCs.
+		 */
+		count = drm_add_modes_noedid(connector, 4096, 4096);
+		if (count)
+			drm_set_preferred_mode(connector, 1024, 768);
+	}
+
+	return count;
+}
+
+static int ast_sil164_connector_helper_detect_ctx(struct drm_connector *connector,
+						  struct drm_modeset_acquire_ctx *ctx,
+						  bool force)
+{
+	struct ast_connector *ast_connector = to_ast_connector(connector);
+	enum drm_connector_status status;
+
+	status = drm_connector_helper_detect_from_ddc(connector, ctx, force);
+
+	if (status != ast_connector->physical_status)
+		++connector->epoch_counter;
+	ast_connector->physical_status = status;
+
+	return connector_status_connected;
+}
+
+static const struct drm_connector_helper_funcs ast_sil164_connector_helper_funcs = {
+	.get_modes = ast_sil164_connector_helper_get_modes,
+	.detect_ctx = ast_sil164_connector_helper_detect_ctx,
+};
+
+static const struct drm_connector_funcs ast_sil164_connector_funcs = {
+	.reset = drm_atomic_helper_connector_reset,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int ast_sil164_connector_init(struct drm_device *dev, struct drm_connector *connector)
+{
+	struct ast_device *ast = to_ast_device(dev);
+	struct i2c_adapter *ddc;
+	int ret;
+
+	ddc = ast_ddc_create(ast);
+	if (IS_ERR(ddc)) {
+		ret = PTR_ERR(ddc);
+		drm_err(dev, "failed to add DDC bus for connector; ret=%d\n", ret);
+		return ret;
+	}
+
+	ret = drm_connector_init_with_ddc(dev, connector, &ast_sil164_connector_funcs,
+					  DRM_MODE_CONNECTOR_DVII, ddc);
+	if (ret)
+		return ret;
+
+	drm_connector_helper_add(connector, &ast_sil164_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+
+	return 0;
+}
+
+int ast_sil164_output_init(struct ast_device *ast)
+{
+	struct drm_device *dev = &ast->base;
+	struct drm_crtc *crtc = &ast->crtc;
+	struct drm_encoder *encoder = &ast->output.sil164.encoder;
+	struct ast_connector *ast_connector = &ast->output.sil164.connector;
+	struct drm_connector *connector = &ast_connector->base;
+	int ret;
+
+	ret = drm_encoder_init(dev, encoder, &ast_sil164_encoder_funcs,
+			       DRM_MODE_ENCODER_TMDS, NULL);
+	if (ret)
+		return ret;
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
+
+	ret = ast_sil164_connector_init(dev, connector);
+	if (ret)
+		return ret;
+	ast_connector->physical_status = connector->status;
+
+	ret = drm_connector_attach_encoder(connector, encoder);
+	if (ret)
+		return ret;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/ast/ast_vga.c b/drivers/gpu/drm/ast/ast_vga.c
new file mode 100644
index 000000000000..3e815da43fbd
--- /dev/null
+++ b/drivers/gpu/drm/ast/ast_vga.c
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: MIT
+
+#include <drm/drm_atomic_state_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+
+#include "ast_ddc.h"
+#include "ast_drv.h"
+
+/*
+ * Encoder
+ */
+
+static const struct drm_encoder_funcs ast_vga_encoder_funcs = {
+	.destroy = drm_encoder_cleanup,
+};
+
+/*
+ * Connector
+ */
+
+static int ast_vga_connector_helper_get_modes(struct drm_connector *connector)
+{
+	struct ast_connector *ast_connector = to_ast_connector(connector);
+	int count;
+
+	if (ast_connector->physical_status == connector_status_connected) {
+		count = drm_connector_helper_get_modes(connector);
+	} else {
+		/*
+		 * There's no EDID data without a connected monitor. Set BMC-
+		 * compatible modes in this case. The XGA default resolution
+		 * should work well for all BMCs.
+		 */
+		count = drm_add_modes_noedid(connector, 4096, 4096);
+		if (count)
+			drm_set_preferred_mode(connector, 1024, 768);
+	}
+
+	return count;
+}
+
+static int ast_vga_connector_helper_detect_ctx(struct drm_connector *connector,
+					       struct drm_modeset_acquire_ctx *ctx,
+					       bool force)
+{
+	struct ast_connector *ast_connector = to_ast_connector(connector);
+	enum drm_connector_status status;
+
+	status = drm_connector_helper_detect_from_ddc(connector, ctx, force);
+
+	if (status != ast_connector->physical_status)
+		++connector->epoch_counter;
+	ast_connector->physical_status = status;
+
+	return connector_status_connected;
+}
+
+static const struct drm_connector_helper_funcs ast_vga_connector_helper_funcs = {
+	.get_modes = ast_vga_connector_helper_get_modes,
+	.detect_ctx = ast_vga_connector_helper_detect_ctx,
+};
+
+static const struct drm_connector_funcs ast_vga_connector_funcs = {
+	.reset = drm_atomic_helper_connector_reset,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = drm_connector_cleanup,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int ast_vga_connector_init(struct drm_device *dev, struct drm_connector *connector)
+{
+	struct ast_device *ast = to_ast_device(dev);
+	struct i2c_adapter *ddc;
+	int ret;
+
+	ddc = ast_ddc_create(ast);
+	if (IS_ERR(ddc)) {
+		ret = PTR_ERR(ddc);
+		drm_err(dev, "failed to add DDC bus for connector; ret=%d\n", ret);
+		return ret;
+	}
+
+	ret = drm_connector_init_with_ddc(dev, connector, &ast_vga_connector_funcs,
+					  DRM_MODE_CONNECTOR_VGA, ddc);
+	if (ret)
+		return ret;
+
+	drm_connector_helper_add(connector, &ast_vga_connector_helper_funcs);
+
+	connector->interlace_allowed = 0;
+	connector->doublescan_allowed = 0;
+
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+
+	return 0;
+}
+
+int ast_vga_output_init(struct ast_device *ast)
+{
+	struct drm_device *dev = &ast->base;
+	struct drm_crtc *crtc = &ast->crtc;
+	struct drm_encoder *encoder = &ast->output.vga.encoder;
+	struct ast_connector *ast_connector = &ast->output.vga.connector;
+	struct drm_connector *connector = &ast_connector->base;
+	int ret;
+
+	ret = drm_encoder_init(dev, encoder, &ast_vga_encoder_funcs,
+			       DRM_MODE_ENCODER_DAC, NULL);
+	if (ret)
+		return ret;
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
+
+	ret = ast_vga_connector_init(dev, connector);
+	if (ret)
+		return ret;
+	ast_connector->physical_status = connector->status;
+
+	ret = drm_connector_attach_encoder(connector, encoder);
+	if (ret)
+		return ret;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index 88e4aa5830f3..a2e9bb485c36 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -1647,25 +1647,15 @@ static int anx7625_get_swing_setting(struct device *dev,
 {
 	int num_regs;
 
-	if (of_get_property(dev->of_node,
-			    "analogix,lane0-swing", &num_regs)) {
-		if (num_regs > DP_TX_SWING_REG_CNT)
-			num_regs = DP_TX_SWING_REG_CNT;
-
+	num_regs = of_property_read_variable_u8_array(dev->of_node, "analogix,lane0-swing",
+						      pdata->lane0_reg_data, 1, DP_TX_SWING_REG_CNT);
+	if (num_regs > 0)
 		pdata->dp_lane0_swing_reg_cnt = num_regs;
-		of_property_read_u8_array(dev->of_node, "analogix,lane0-swing",
-					  pdata->lane0_reg_data, num_regs);
-	}
-
-	if (of_get_property(dev->of_node,
-			    "analogix,lane1-swing", &num_regs)) {
-		if (num_regs > DP_TX_SWING_REG_CNT)
-			num_regs = DP_TX_SWING_REG_CNT;
 
+	num_regs = of_property_read_variable_u8_array(dev->of_node, "analogix,lane1-swing",
+						      pdata->lane1_reg_data, 1, DP_TX_SWING_REG_CNT);
+	if (num_regs > 0)
 		pdata->dp_lane1_swing_reg_cnt = num_regs;
-		of_property_read_u8_array(dev->of_node, "analogix,lane1-swing",
-					  pdata->lane1_reg_data, num_regs);
-	}
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c
index 1a9defa15663..e265ab3c8c92 100644
--- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
+++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
@@ -422,22 +422,6 @@ static const struct drm_connector_funcs lt8912_connector_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static enum drm_mode_status
-lt8912_connector_mode_valid(struct drm_connector *connector,
-			    struct drm_display_mode *mode)
-{
-	if (mode->clock > 150000)
-		return MODE_CLOCK_HIGH;
-
-	if (mode->hdisplay > 1920)
-		return MODE_BAD_HVALUE;
-
-	if (mode->vdisplay > 1080)
-		return MODE_BAD_VVALUE;
-
-	return MODE_OK;
-}
-
 static int lt8912_connector_get_modes(struct drm_connector *connector)
 {
 	const struct drm_edid *drm_edid;
@@ -463,7 +447,6 @@ static int lt8912_connector_get_modes(struct drm_connector *connector)
 
 static const struct drm_connector_helper_funcs lt8912_connector_helper_funcs = {
 	.get_modes = lt8912_connector_get_modes,
-	.mode_valid = lt8912_connector_mode_valid,
 };
 
 static void lt8912_bridge_mode_set(struct drm_bridge *bridge,
@@ -605,6 +588,23 @@ static void lt8912_bridge_detach(struct drm_bridge *bridge)
 		drm_bridge_hpd_disable(lt->hdmi_port);
 }
 
+static enum drm_mode_status
+lt8912_bridge_mode_valid(struct drm_bridge *bridge,
+			 const struct drm_display_info *info,
+			 const struct drm_display_mode *mode)
+{
+	if (mode->clock > 150000)
+		return MODE_CLOCK_HIGH;
+
+	if (mode->hdisplay > 1920)
+		return MODE_BAD_HVALUE;
+
+	if (mode->vdisplay > 1080)
+		return MODE_BAD_VVALUE;
+
+	return MODE_OK;
+}
+
 static enum drm_connector_status
 lt8912_bridge_detect(struct drm_bridge *bridge)
 {
@@ -635,6 +635,7 @@ static const struct drm_edid *lt8912_bridge_edid_read(struct drm_bridge *bridge,
 static const struct drm_bridge_funcs lt8912_bridge_funcs = {
 	.attach = lt8912_bridge_attach,
 	.detach = lt8912_bridge_detach,
+	.mode_valid = lt8912_bridge_mode_valid,
 	.mode_set = lt8912_bridge_mode_set,
 	.enable = lt8912_bridge_enable,
 	.detect = lt8912_bridge_detect,
diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
index 8d54091ec66e..5f05647a3bea 100644
--- a/drivers/gpu/drm/bridge/nwl-dsi.c
+++ b/drivers/gpu/drm/bridge/nwl-dsi.c
@@ -289,13 +289,13 @@ static int nwl_dsi_config_dpi(struct nwl_dsi *dsi)
 
 	nwl_dsi_write(dsi, NWL_DSI_INTERFACE_COLOR_CODING, NWL_DSI_DPI_24_BIT);
 	nwl_dsi_write(dsi, NWL_DSI_PIXEL_FORMAT, color_format);
-	/*
-	 * Adjusting input polarity based on the video mode results in
-	 * a black screen so always pick active low:
-	 */
 	nwl_dsi_write(dsi, NWL_DSI_VSYNC_POLARITY,
+		      dsi->mode.flags & DRM_MODE_FLAG_PVSYNC ?
+		      NWL_DSI_VSYNC_POLARITY_ACTIVE_HIGH :
 		      NWL_DSI_VSYNC_POLARITY_ACTIVE_LOW);
 	nwl_dsi_write(dsi, NWL_DSI_HSYNC_POLARITY,
+		      dsi->mode.flags & DRM_MODE_FLAG_PHSYNC ?
+		      NWL_DSI_HSYNC_POLARITY_ACTIVE_HIGH :
 		      NWL_DSI_HSYNC_POLARITY_ACTIVE_LOW);
 
 	burst_mode = (dsi->dsi_mode_flags & MIPI_DSI_MODE_VIDEO_BURST) &&
diff --git a/drivers/gpu/drm/bridge/nwl-dsi.h b/drivers/gpu/drm/bridge/nwl-dsi.h
index a247a8a11c7c..61e7d65cb1eb 100644
--- a/drivers/gpu/drm/bridge/nwl-dsi.h
+++ b/drivers/gpu/drm/bridge/nwl-dsi.h
@@ -30,11 +30,11 @@
 #define NWL_DSI_PIXEL_FORMAT			0x20c
 #define NWL_DSI_VSYNC_POLARITY			0x210
 #define NWL_DSI_VSYNC_POLARITY_ACTIVE_LOW	0
-#define NWL_DSI_VSYNC_POLARITY_ACTIVE_HIGH	BIT(1)
+#define NWL_DSI_VSYNC_POLARITY_ACTIVE_HIGH	BIT(0)
 
 #define NWL_DSI_HSYNC_POLARITY			0x214
 #define NWL_DSI_HSYNC_POLARITY_ACTIVE_LOW	0
-#define NWL_DSI_HSYNC_POLARITY_ACTIVE_HIGH	BIT(1)
+#define NWL_DSI_HSYNC_POLARITY_ACTIVE_HIGH	BIT(0)
 
 #define NWL_DSI_VIDEO_MODE			0x218
 #define NWL_DSI_HFP				0x21c
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 9f2bc932c371..0031f3c54882 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -138,9 +138,6 @@ struct dw_hdmi {
 	struct platform_device *audio;
 	struct platform_device *cec;
 	struct device *dev;
-	struct clk *isfr_clk;
-	struct clk *iahb_clk;
-	struct clk *cec_clk;
 	struct dw_hdmi_i2c *i2c;
 
 	struct hdmi_data_info hdmi_data;
@@ -3326,6 +3323,7 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
 	struct device_node *ddc_node;
 	struct dw_hdmi_cec_data cec;
 	struct dw_hdmi *hdmi;
+	struct clk *clk;
 	struct resource *iores = NULL;
 	int irq;
 	int ret;
@@ -3405,50 +3403,27 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
 		hdmi->regm = plat_data->regm;
 	}
 
-	hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr");
-	if (IS_ERR(hdmi->isfr_clk)) {
-		ret = PTR_ERR(hdmi->isfr_clk);
+	clk = devm_clk_get_enabled(hdmi->dev, "isfr");
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
 		dev_err(hdmi->dev, "Unable to get HDMI isfr clk: %d\n", ret);
 		goto err_res;
 	}
 
-	ret = clk_prepare_enable(hdmi->isfr_clk);
-	if (ret) {
-		dev_err(hdmi->dev, "Cannot enable HDMI isfr clock: %d\n", ret);
+	clk = devm_clk_get_enabled(hdmi->dev, "iahb");
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
+		dev_err(hdmi->dev, "Unable to get HDMI iahb clk: %d\n", ret);
 		goto err_res;
 	}
 
-	hdmi->iahb_clk = devm_clk_get(hdmi->dev, "iahb");
-	if (IS_ERR(hdmi->iahb_clk)) {
-		ret = PTR_ERR(hdmi->iahb_clk);
-		dev_err(hdmi->dev, "Unable to get HDMI iahb clk: %d\n", ret);
-		goto err_isfr;
-	}
-
-	ret = clk_prepare_enable(hdmi->iahb_clk);
-	if (ret) {
-		dev_err(hdmi->dev, "Cannot enable HDMI iahb clock: %d\n", ret);
-		goto err_isfr;
-	}
-
-	hdmi->cec_clk = devm_clk_get(hdmi->dev, "cec");
-	if (PTR_ERR(hdmi->cec_clk) == -ENOENT) {
-		hdmi->cec_clk = NULL;
-	} else if (IS_ERR(hdmi->cec_clk)) {
-		ret = PTR_ERR(hdmi->cec_clk);
+	clk = devm_clk_get_optional_enabled(hdmi->dev, "cec");
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
 		if (ret != -EPROBE_DEFER)
 			dev_err(hdmi->dev, "Cannot get HDMI cec clock: %d\n",
 				ret);
-
-		hdmi->cec_clk = NULL;
-		goto err_iahb;
-	} else {
-		ret = clk_prepare_enable(hdmi->cec_clk);
-		if (ret) {
-			dev_err(hdmi->dev, "Cannot enable HDMI cec clock: %d\n",
-				ret);
-			goto err_iahb;
-		}
+		goto err_res;
 	}
 
 	/* Product and revision IDs */
@@ -3462,12 +3437,12 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
 		dev_err(dev, "Unsupported HDMI controller (%04x:%02x:%02x)\n",
 			hdmi->version, prod_id0, prod_id1);
 		ret = -ENODEV;
-		goto err_iahb;
+		goto err_res;
 	}
 
 	ret = dw_hdmi_detect_phy(hdmi);
 	if (ret < 0)
-		goto err_iahb;
+		goto err_res;
 
 	dev_info(dev, "Detected HDMI TX controller v%x.%03x %s HDCP (%s)\n",
 		 hdmi->version >> 12, hdmi->version & 0xfff,
@@ -3479,14 +3454,14 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		ret = irq;
-		goto err_iahb;
+		goto err_res;
 	}
 
 	ret = devm_request_threaded_irq(dev, irq, dw_hdmi_hardirq,
 					dw_hdmi_irq, IRQF_SHARED,
 					dev_name(dev), hdmi);
 	if (ret)
-		goto err_iahb;
+		goto err_res;
 
 	/*
 	 * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
@@ -3603,11 +3578,6 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
 
 	return hdmi;
 
-err_iahb:
-	clk_disable_unprepare(hdmi->iahb_clk);
-	clk_disable_unprepare(hdmi->cec_clk);
-err_isfr:
-	clk_disable_unprepare(hdmi->isfr_clk);
 err_res:
 	i2c_put_adapter(hdmi->ddc);
 
@@ -3627,10 +3597,6 @@ void dw_hdmi_remove(struct dw_hdmi *hdmi)
 	/* Disable all interrupts */
 	hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
 
-	clk_disable_unprepare(hdmi->iahb_clk);
-	clk_disable_unprepare(hdmi->isfr_clk);
-	clk_disable_unprepare(hdmi->cec_clk);
-
 	if (hdmi->i2c)
 		i2c_del_adapter(&hdmi->i2c->adap);
 	else
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index ff1e47a9c83e..855beafb76ff 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1817,7 +1817,7 @@ static int edid_block_tag(const void *_block)
 
 static bool edid_block_is_zero(const void *edid)
 {
-	return !memchr_inv(edid, 0, EDID_LENGTH);
+	return mem_is_zero(edid, EDID_LENGTH);
 }
 
 static bool drm_edid_eq(const struct drm_edid *drm_edid,
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 2d96c0cd9b7e..2bc3973d35a1 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -1339,6 +1339,9 @@ EXPORT_SYMBOL(mipi_dsi_dcs_set_pixel_format);
  * @dsi: DSI peripheral device
  * @scanline: scanline to use as trigger
  *
+ * This function is deprecated. Use mipi_dsi_dcs_set_tear_scanline_multi()
+ * instead.
+ *
  * Return: 0 on success or a negative error code on failure
  */
 int mipi_dsi_dcs_set_tear_scanline(struct mipi_dsi_device *dsi, u16 scanline)
@@ -1833,6 +1836,34 @@ void mipi_dsi_dcs_set_page_address_multi(struct mipi_dsi_multi_context *ctx,
 }
 EXPORT_SYMBOL(mipi_dsi_dcs_set_page_address_multi);
 
+/**
+ * mipi_dsi_dcs_set_tear_scanline_multi() - set the scanline to use as trigger for
+ *    the Tearing Effect output signal of the display module
+ * @ctx: Context for multiple DSI transactions
+ * @scanline: scanline to use as trigger
+ *
+ * Like mipi_dsi_dcs_set_tear_scanline() but deals with errors in a way that
+ * makes it convenient to make several calls in a row.
+ */
+void mipi_dsi_dcs_set_tear_scanline_multi(struct mipi_dsi_multi_context *ctx,
+					  u16 scanline)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	if (ctx->accum_err)
+		return;
+
+	ret = mipi_dsi_dcs_set_tear_scanline(dsi, scanline);
+	if (ret < 0) {
+		ctx->accum_err = ret;
+		dev_err(dev, "Failed to set tear scanline: %d\n",
+			ctx->accum_err);
+	}
+}
+EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_scanline_multi);
+
 static int mipi_dsi_drv_probe(struct device *dev)
 {
 	struct mipi_dsi_driver *drv = to_mipi_dsi_driver(dev->driver);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 977f149551f6..6a0c7ae654f4 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5184,7 +5184,7 @@ intel_dp_check_mst_status(struct intel_dp *intel_dp)
 			ack[3] |= DP_TUNNELING_IRQ;
 		}
 
-		if (!memchr_inv(ack, 0, sizeof(ack)))
+		if (mem_is_zero(ack, sizeof(ack)))
 			break;
 
 		if (!intel_dp_ack_sink_irq_esi(intel_dp, ack))
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c
index dfa1d9f30d33..ff11836459de 100644
--- a/drivers/gpu/drm/i915/display/intel_opregion.c
+++ b/drivers/gpu/drm/i915/display/intel_opregion.c
@@ -1117,7 +1117,7 @@ const struct drm_edid *intel_opregion_get_edid(struct intel_connector *connector
 
 	/* Validity corresponds to number of 128-byte blocks */
 	len = (opregion->asle_ext->phed & ASLE_PHED_EDID_VALID_MASK) * 128;
-	if (!len || !memchr_inv(edid, 0, len))
+	if (!len || mem_is_zero(edid, len))
 		return NULL;
 
 	drm_edid = drm_edid_alloc(edid, len);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
index 3527b8f446fe..2fda549dd82d 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
@@ -506,7 +506,7 @@ static int igt_dmabuf_export_vmap(void *arg)
 		goto out;
 	}
 
-	if (memchr_inv(ptr, 0, dmabuf->size)) {
+	if (!mem_is_zero(ptr, dmabuf->size)) {
 		pr_err("Exported object not initialised to zero!\n");
 		err = -EINVAL;
 		goto out;
diff --git a/drivers/gpu/drm/imagination/pvr_device.h b/drivers/gpu/drm/imagination/pvr_device.h
index ecdd5767d8ef..b574e23d484b 100644
--- a/drivers/gpu/drm/imagination/pvr_device.h
+++ b/drivers/gpu/drm/imagination/pvr_device.h
@@ -668,7 +668,7 @@ pvr_ioctl_union_padding_check(void *instance, size_t union_offset,
 	void *padding_start = ((u8 *)instance) + union_offset + member_size;
 	size_t padding_size = union_size - member_size;
 
-	return !memchr_inv(padding_start, 0, padding_size);
+	return mem_is_zero(padding_start, padding_size);
 }
 
 /**
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 9f49b0189d3b..5d83ddc06ece 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -784,7 +784,8 @@ config DRM_PANEL_SHARP_LS060T1SX01
 config DRM_PANEL_SITRONIX_ST7701
 	tristate "Sitronix ST7701 panel driver"
 	depends on OF
-	depends on DRM_MIPI_DSI
+	depends on SPI || DRM_MIPI_DSI
+	select DRM_MIPI_DBI if SPI
 	depends on BACKLIGHT_CLASS_DEVICE
 	help
 	  Say Y here if you want to enable support for the Sitronix
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
index 775d5d5e828c..1fbc5d433d75 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c
@@ -121,19 +121,19 @@ struct ili9341_config {
 	const struct drm_display_mode mode;
 	/* ca: TODO: need comments for this register */
 	u8 ca[ILI9341_CA_LEN];
-	/* power_b: TODO: need comments for this register */
+	/* power_b: Power control B (CFh) */
 	u8 power_b[ILI9341_POWER_B_LEN];
-	/* power_seq: TODO: need comments for this register */
+	/* power_seq: Power on sequence control (EDh) */
 	u8 power_seq[ILI9341_POWER_SEQ_LEN];
-	/* dtca: TODO: need comments for this register */
+	/* dtca: Driver timing control A (E8h) */
 	u8 dtca[ILI9341_DTCA_LEN];
-	/* dtcb: TODO: need comments for this register */
+	/* dtcb: Driver timing control B (EAh) */
 	u8 dtcb[ILI9341_DTCB_LEN];
-	/* power_a: TODO: need comments for this register */
+	/* power_a: Power control A (CBh) */
 	u8 power_a[ILI9341_POWER_A_LEN];
 	/* frc: Frame Rate Control (In Normal Mode/Full Colors) (B1h) */
 	u8 frc[ILI9341_FRC_LEN];
-	/* prc: TODO: need comments for this register */
+	/* prc: Pump ratio control (F7h) */
 	u8 prc;
 	/* dfc_1: B6h DISCTRL (Display Function Control) */
 	u8 dfc_1[ILI9341_DFC_1_LEN];
@@ -147,7 +147,7 @@ struct ili9341_config {
 	u8 vcom_2;
 	/* address_mode: Memory Access Control (36h) */
 	u8 address_mode;
-	/* g3amma_en: TODO: need comments for this register */
+	/* g3amma_en: Enable 3G (F2h) */
 	u8 g3amma_en;
 	/* rgb_interface: RGB Interface Signal Control (B0h) */
 	u8 rgb_interface;
diff --git a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c b/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
index 04d315d96bff..44897e5218a6 100644
--- a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
+++ b/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
@@ -31,8 +31,6 @@ struct jadard_panel_desc {
 	bool reset_before_power_off_vcioo;
 	unsigned int vcioo_to_lp11_delay_ms;
 	unsigned int lp11_to_reset_delay_ms;
-	unsigned int exit_sleep_to_display_on_delay_ms;
-	unsigned int display_on_delay_ms;
 	unsigned int backlight_off_to_display_off_delay_ms;
 	unsigned int display_off_to_enter_sleep_delay_ms;
 	unsigned int enter_sleep_to_reset_down_delay_ms;
@@ -66,26 +64,6 @@ static inline struct jadard *panel_to_jadard(struct drm_panel *panel)
 	return container_of(panel, struct jadard, panel);
 }
 
-static int jadard_enable(struct drm_panel *panel)
-{
-	struct jadard *jadard = panel_to_jadard(panel);
-	struct mipi_dsi_multi_context dsi_ctx = { .dsi = jadard->dsi };
-
-	msleep(120);
-
-	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
-
-	if (jadard->desc->exit_sleep_to_display_on_delay_ms)
-		mipi_dsi_msleep(&dsi_ctx, jadard->desc->exit_sleep_to_display_on_delay_ms);
-
-	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
-
-	if (jadard->desc->display_on_delay_ms)
-		mipi_dsi_msleep(&dsi_ctx, jadard->desc->display_on_delay_ms);
-
-	return dsi_ctx.accum_err;
-}
-
 static int jadard_disable(struct drm_panel *panel)
 {
 	struct jadard *jadard = panel_to_jadard(panel);
@@ -202,7 +180,6 @@ static const struct drm_panel_funcs jadard_funcs = {
 	.disable = jadard_disable,
 	.unprepare = jadard_unprepare,
 	.prepare = jadard_prepare,
-	.enable = jadard_enable,
 	.get_modes = jadard_get_modes,
 	.get_orientation = jadard_panel_get_orientation,
 };
@@ -382,6 +359,12 @@ static int radxa_display_8hd_ad002_init_cmds(struct jadard *jadard)
 
 	jd9365da_switch_page(&dsi_ctx, 0x00);
 
+	mipi_dsi_msleep(&dsi_ctx, 120);
+
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+
 	return dsi_ctx.accum_err;
 };
 
@@ -608,6 +591,12 @@ static int cz101b4001_init_cmds(struct jadard *jadard)
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xE6, 0x02);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xE7, 0x0C);
 
+	mipi_dsi_msleep(&dsi_ctx, 120);
+
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+
 	return dsi_ctx.accum_err;
 };
 
@@ -831,6 +820,16 @@ static int kingdisplay_kd101ne3_init_cmds(struct jadard *jadard)
 
 	jd9365da_switch_page(&dsi_ctx, 0x00);
 
+	mipi_dsi_msleep(&dsi_ctx, 120);
+
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+
+	mipi_dsi_msleep(&dsi_ctx, 120);
+
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+
+	mipi_dsi_msleep(&dsi_ctx, 20);
+
 	return dsi_ctx.accum_err;
 };
 
@@ -859,8 +858,6 @@ static const struct jadard_panel_desc kingdisplay_kd101ne3_40ti_desc = {
 	.reset_before_power_off_vcioo = true,
 	.vcioo_to_lp11_delay_ms = 5,
 	.lp11_to_reset_delay_ms = 10,
-	.exit_sleep_to_display_on_delay_ms = 120,
-	.display_on_delay_ms = 20,
 	.backlight_off_to_display_off_delay_ms = 100,
 	.display_off_to_enter_sleep_delay_ms = 50,
 	.enter_sleep_to_reset_down_delay_ms = 100,
@@ -876,22 +873,22 @@ static int melfas_lmfbx101117480_init_cmds(struct jadard *jadard)
 	jd9365da_switch_page(&dsi_ctx, 0x01);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0c, 0x74);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x17, 0x00);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x18, 0xbf);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x19, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x18, 0xd7);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x19, 0x01);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1a, 0x00);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1b, 0xbf);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1c, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1b, 0xd7);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1c, 0x01);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1f, 0x70);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x20, 0x2d);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x21, 0x2d);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x22, 0x7e);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x24, 0xfe);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x24, 0xfd);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x37, 0x19);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x35, 0x28);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x38, 0x05);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x39, 0x08);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3a, 0x12);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3c, 0x78);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3c, 0x7e);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3d, 0xff);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3e, 0xff);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3f, 0x7f);
@@ -902,47 +899,47 @@ static int melfas_lmfbx101117480_init_cmds(struct jadard *jadard)
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0c, 0x74);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x55, 0x02);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x56, 0x01);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x57, 0x8e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x57, 0x6a);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x58, 0x09);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x59, 0x0a);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5a, 0x2e);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5b, 0x1a);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5c, 0x15);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5d, 0x7f);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5e, 0x69);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5f, 0x59);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x60, 0x4e);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x61, 0x4c);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x62, 0x40);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x63, 0x45);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x64, 0x30);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x65, 0x4a);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x66, 0x49);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x67, 0x4a);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x68, 0x68);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x69, 0x57);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6a, 0x5b);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6b, 0x4e);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6c, 0x49);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5d, 0x73);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5e, 0x56);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5f, 0x43);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x60, 0x38);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x61, 0x36);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x62, 0x28);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x63, 0x2f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x64, 0x19);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x65, 0x32);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x66, 0x31);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x67, 0x31);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x68, 0x4f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x69, 0x3e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6a, 0x47);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6b, 0x36);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6c, 0x31);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6d, 0x24);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6e, 0x12);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x02);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x70, 0x7f);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x71, 0x69);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x72, 0x59);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x73, 0x4e);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x74, 0x4c);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x75, 0x40);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x76, 0x45);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x77, 0x30);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x78, 0x4a);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x79, 0x49);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7a, 0x4a);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7b, 0x68);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7c, 0x57);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7d, 0x5b);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7e, 0x4e);
-	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7f, 0x49);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x70, 0x73);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x71, 0x56);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x72, 0x43);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x73, 0x38);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x74, 0x36);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x75, 0x28);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x76, 0x2f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x77, 0x19);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x78, 0x32);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x79, 0x31);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7a, 0x31);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7b, 0x4f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7c, 0x3e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7d, 0x47);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7e, 0x36);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7f, 0x31);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x80, 0x24);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x81, 0x12);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x82, 0x02);
@@ -1074,6 +1071,16 @@ static int melfas_lmfbx101117480_init_cmds(struct jadard *jadard)
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe6, 0x02);
 	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe7, 0x06);
 
+	mipi_dsi_msleep(&dsi_ctx, 120);
+
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+
+	mipi_dsi_msleep(&dsi_ctx, 120);
+
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+
+	mipi_dsi_msleep(&dsi_ctx, 20);
+
 	return dsi_ctx.accum_err;
 };
 
@@ -1102,8 +1109,6 @@ static const struct jadard_panel_desc melfas_lmfbx101117480_desc = {
 	.reset_before_power_off_vcioo = true,
 	.vcioo_to_lp11_delay_ms = 5,
 	.lp11_to_reset_delay_ms = 10,
-	.exit_sleep_to_display_on_delay_ms = 120,
-	.display_on_delay_ms = 20,
 	.backlight_off_to_display_off_delay_ms = 100,
 	.display_off_to_enter_sleep_delay_ms = 50,
 	.enter_sleep_to_reset_down_delay_ms = 100,
diff --git a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
index 483dc88d16d8..4eb71e85e9e9 100644
--- a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
+++ b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
@@ -41,142 +41,89 @@ static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx)
 static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 
-	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
-	mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
-	mipi_dsi_generic_write_seq(dsi, 0xec,
-				   0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
-				   0x13, 0x15, 0x68, 0x0b, 0xb5);
-	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x00);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x01);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xec,
+					 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
+					 0x13, 0x15, 0x68, 0x0b, 0xb5);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
 
-	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set tear on: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
 
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
 
-	ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set pixel format: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_set_pixel_format_multi(&dsi_ctx, 0x77);
+	mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 0x0437);
+	mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x077f);
+	mipi_dsi_dcs_set_tear_scanline_multi(&dsi_ctx, 0x0000);
+	mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x00ff);
 
-	ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x0437);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set column address: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x84, 0x00);
 
-	ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x077f);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set page address: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 20);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 80);
 
-	ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x0000);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set tear scanline: %d\n", ret);
-		return ret;
-	}
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x04);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x84, 0x00);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xc8, 0x11);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
 
-	ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display brightness: %d\n", ret);
-		return ret;
-	}
-
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
-	mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);
-
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display on: %d\n", ret);
-		return ret;
-	}
-	msleep(20);
-
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
-		return ret;
-	}
-	msleep(80);
-
-	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x04);
-	mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);
-	mipi_dsi_generic_write_seq(dsi, 0xc8, 0x11);
-	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
-
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
-static int jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
+static void jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
 
-	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
-	mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
-	mipi_dsi_generic_write_seq(dsi, 0xec,
-				   0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
-				   0x13, 0x15, 0x68, 0x0b, 0x95);
-	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x00);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x01);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xec,
+					 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
+					 0x13, 0x15, 0x68, 0x0b, 0x95);
+	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
 
-	ret = mipi_dsi_dcs_set_display_off(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display off: %d\n", ret);
-		return ret;
-	}
-	usleep_range(2000, 3000);
-
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
-		return ret;
-	}
-	msleep(120);
-
-	return 0;
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_usleep_range(&dsi_ctx, 2000, 3000);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 120);
 }
 
 static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
 {
 	struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
-	struct device *dev = &ctx->dsi->dev;
 	int ret;
 
 	jdi_fhd_r63452_reset(ctx);
 
 	ret = jdi_fhd_r63452_on(ctx);
-	if (ret < 0) {
-		dev_err(dev, "Failed to initialize panel: %d\n", ret);
+	if (ret < 0)
 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
-		return ret;
-	}
 
-	return 0;
+	return ret;
 }
 
 static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
 {
 	struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
-	struct device *dev = &ctx->dsi->dev;
-	int ret;
 
-	ret = jdi_fhd_r63452_off(ctx);
-	if (ret < 0)
-		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+	/*
+	 * NOTE: We don't return an error here as while the panel won't have
+	 * been cleanly turned off at least we've asserted the reset signal
+	 * so it should be safe to power it back on again later
+	 */
+	jdi_fhd_r63452_off(ctx);
 
 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 
diff --git a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
index ea4a6bf6d35b..4db852ffb0f6 100644
--- a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
+++ b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
@@ -23,7 +23,7 @@
 
 /* Manufacturer specific Commands send via DSI */
 #define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41
-#define MANTIX_CMD_INT_CANCEL           0x4C
+#define MANTIX_CMD_INT_CANCEL           0x4c
 #define MANTIX_CMD_SPI_FINISH           0x90
 
 struct mantix {
@@ -45,82 +45,57 @@ static inline struct mantix *panel_to_mantix(struct drm_panel *panel)
 	return container_of(panel, struct mantix, panel);
 }
 
-static int mantix_init_sequence(struct mantix *ctx)
+static void mantix_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)
 {
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-	struct device *dev = ctx->dev;
-
 	/*
 	 * Init sequence was supplied by the panel vendor.
 	 */
-	mipi_dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A);
+	mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a);
 
-	mipi_dsi_generic_write_seq(dsi, MANTIX_CMD_INT_CANCEL, 0x03);
-	mipi_dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x03);
-	mipi_dsi_generic_write_seq(dsi, 0x80, 0xA9, 0x00);
+	mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_INT_CANCEL, 0x03);
+	mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a, 0x03);
+	mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x80, 0xa9, 0x00);
 
-	mipi_dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x09);
-	mipi_dsi_generic_write_seq(dsi, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);
-	msleep(20);
+	mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a, 0x09);
+	mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);
+	mipi_dsi_msleep(dsi_ctx, 20);
 
-	mipi_dsi_generic_write_seq(dsi, MANTIX_CMD_SPI_FINISH, 0xA5);
-	mipi_dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2F);
-	msleep(20);
-
-	dev_dbg(dev, "Panel init sequence done\n");
-	return 0;
+	mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_SPI_FINISH, 0xa5);
+	mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2f);
+	mipi_dsi_msleep(dsi_ctx, 20);
 }
 
 static int mantix_enable(struct drm_panel *panel)
 {
 	struct mantix *ctx = panel_to_mantix(panel);
-	struct device *dev = ctx->dev;
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
-	int ret;
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-	ret = mantix_init_sequence(ctx);
-	if (ret < 0) {
-		dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
-		return ret;
-	}
+	mantix_init_sequence(&dsi_ctx);
+	if (!dsi_ctx.accum_err)
+		dev_dbg(ctx->dev, "Panel init sequence done\n");
 
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to exit sleep mode\n");
-		return ret;
-	}
-	msleep(20);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, 20);
 
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret)
-		return ret;
-	usleep_range(10000, 12000);
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+	mipi_dsi_usleep_range(&dsi_ctx, 10000, 12000);
 
-	ret = mipi_dsi_turn_on_peripheral(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to turn on peripheral\n");
-		return ret;
-	}
+	mipi_dsi_turn_on_peripheral_multi(&dsi_ctx);
 
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static int mantix_disable(struct drm_panel *panel)
 {
 	struct mantix *ctx = panel_to_mantix(panel);
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-	ret = mipi_dsi_dcs_set_display_off(dsi);
-	if (ret < 0)
-		dev_err(ctx->dev, "Failed to turn off the display: %d\n", ret);
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
 
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret < 0)
-		dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret);
-
-
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static int mantix_unprepare(struct drm_panel *panel)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 1b78248cbe4f..86735430462f 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2527,6 +2527,38 @@ static const struct panel_desc innolux_g070y2_l01 = {
 	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
+static const struct display_timing innolux_g070ace_lh3_timing = {
+	.pixelclock = { 25200000, 25400000, 35700000 },
+	.hactive = { 800, 800, 800 },
+	.hfront_porch = { 30, 32, 87 },
+	.hback_porch = { 29, 31, 86 },
+	.hsync_len = { 1, 1, 1 },
+	.vactive = { 480, 480, 480 },
+	.vfront_porch = { 4, 5, 65 },
+	.vback_porch = { 3, 4, 65 },
+	.vsync_len = { 1, 1, 1 },
+	.flags = DISPLAY_FLAGS_DE_HIGH,
+};
+
+static const struct panel_desc innolux_g070ace_lh3 = {
+	.timings = &innolux_g070ace_lh3_timing,
+	.num_timings = 1,
+	.bpc = 8,
+	.size = {
+		.width = 152,
+		.height = 91,
+	},
+	.delay = {
+		.prepare = 10,
+		.enable = 450,
+		.disable = 200,
+		.unprepare = 510,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
+};
+
 static const struct drm_display_mode innolux_g070y2_t02_mode = {
 	.clock = 33333,
 	.hdisplay = 800,
@@ -3486,6 +3518,39 @@ static const struct panel_desc olimex_lcd_olinuxino_43ts = {
 	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
 };
 
+static const struct display_timing ontat_kd50g21_40nt_a1_timing = {
+	.pixelclock = { 30000000, 30000000, 50000000 },
+	.hactive = { 800, 800, 800 },
+	.hfront_porch = { 1, 40, 255 },
+	.hback_porch = { 1, 40, 87 },
+	.hsync_len = { 1, 48, 87 },
+	.vactive = { 480, 480, 480 },
+	.vfront_porch = { 1, 13, 255 },
+	.vback_porch = { 1, 29, 29 },
+	.vsync_len = { 3, 3, 31 },
+	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+		 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+};
+
+static const struct panel_desc ontat_kd50g21_40nt_a1 = {
+	.timings = &ontat_kd50g21_40nt_a1_timing,
+	.num_timings = 1,
+	.bpc = 8,
+	.size = {
+		.width = 108,
+		.height = 65,
+	},
+	.delay = {
+		.prepare = 147,		/* 5 VSDs */
+		.enable = 147,		/* 5 VSDs */
+		.disable = 88,		/* 3 VSDs */
+		.unprepare = 117,	/* 4 VSDs */
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
+	.connector_type = DRM_MODE_CONNECTOR_DPI,
+};
+
 /*
  * 800x480 CVT. The panel appears to be quite accepting, at least as far as
  * pixel clocks, but this is the timing that was being used in the Adafruit
@@ -4734,6 +4799,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "innolux,g070ace-l01",
 		.data = &innolux_g070ace_l01,
+	}, {
+		.compatible = "innolux,g070ace-lh3",
+		.data = &innolux_g070ace_lh3,
 	}, {
 		.compatible = "innolux,g070y2-l01",
 		.data = &innolux_g070y2_l01,
@@ -4845,6 +4913,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "olimex,lcd-olinuxino-43-ts",
 		.data = &olimex_lcd_olinuxino_43ts,
+	}, {
+		.compatible = "ontat,kd50g21-40nt-a1",
+		.data = &ontat_kd50g21_40nt_a1,
 	}, {
 		.compatible = "ontat,yx700wv03",
 		.data = &ontat_yx700wv03,
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7701.c b/drivers/gpu/drm/panel/panel-sitronix-st7701.c
index 421eb4592b61..eef03d04e0cd 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7701.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7701.c
@@ -4,6 +4,7 @@
  * Author: Jagan Teki <jagan@amarulasolutions.com>
  */
 
+#include <drm/drm_mipi_dbi.h>
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
@@ -14,79 +15,80 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
 
 #include <video/mipi_display.h>
 
 /* Command2 BKx selection command */
-#define DSI_CMD2BKX_SEL			0xFF
-#define DSI_CMD1			0
-#define DSI_CMD2			BIT(4)
-#define DSI_CMD2BK_MASK			GENMASK(3, 0)
+#define ST7701_CMD2BKX_SEL			0xFF
+#define ST7701_CMD1				0
+#define ST7701_CMD2				BIT(4)
+#define ST7701_CMD2BK_MASK			GENMASK(3, 0)
 
 /* Command2, BK0 commands */
-#define DSI_CMD2_BK0_PVGAMCTRL		0xB0 /* Positive Voltage Gamma Control */
-#define DSI_CMD2_BK0_NVGAMCTRL		0xB1 /* Negative Voltage Gamma Control */
-#define DSI_CMD2_BK0_LNESET		0xC0 /* Display Line setting */
-#define DSI_CMD2_BK0_PORCTRL		0xC1 /* Porch control */
-#define DSI_CMD2_BK0_INVSEL		0xC2 /* Inversion selection, Frame Rate Control */
+#define ST7701_CMD2_BK0_PVGAMCTRL		0xB0 /* Positive Voltage Gamma Control */
+#define ST7701_CMD2_BK0_NVGAMCTRL		0xB1 /* Negative Voltage Gamma Control */
+#define ST7701_CMD2_BK0_LNESET			0xC0 /* Display Line setting */
+#define ST7701_CMD2_BK0_PORCTRL			0xC1 /* Porch control */
+#define ST7701_CMD2_BK0_INVSEL			0xC2 /* Inversion selection, Frame Rate Control */
 
 /* Command2, BK1 commands */
-#define DSI_CMD2_BK1_VRHS		0xB0 /* Vop amplitude setting */
-#define DSI_CMD2_BK1_VCOM		0xB1 /* VCOM amplitude setting */
-#define DSI_CMD2_BK1_VGHSS		0xB2 /* VGH Voltage setting */
-#define DSI_CMD2_BK1_TESTCMD		0xB3 /* TEST Command Setting */
-#define DSI_CMD2_BK1_VGLS		0xB5 /* VGL Voltage setting */
-#define DSI_CMD2_BK1_PWCTLR1		0xB7 /* Power Control 1 */
-#define DSI_CMD2_BK1_PWCTLR2		0xB8 /* Power Control 2 */
-#define DSI_CMD2_BK1_SPD1		0xC1 /* Source pre_drive timing set1 */
-#define DSI_CMD2_BK1_SPD2		0xC2 /* Source EQ2 Setting */
-#define DSI_CMD2_BK1_MIPISET1		0xD0 /* MIPI Setting 1 */
+#define ST7701_CMD2_BK1_VRHS			0xB0 /* Vop amplitude setting */
+#define ST7701_CMD2_BK1_VCOM			0xB1 /* VCOM amplitude setting */
+#define ST7701_CMD2_BK1_VGHSS			0xB2 /* VGH Voltage setting */
+#define ST7701_CMD2_BK1_TESTCMD			0xB3 /* TEST Command Setting */
+#define ST7701_CMD2_BK1_VGLS			0xB5 /* VGL Voltage setting */
+#define ST7701_CMD2_BK1_PWCTLR1			0xB7 /* Power Control 1 */
+#define ST7701_CMD2_BK1_PWCTLR2			0xB8 /* Power Control 2 */
+#define ST7701_CMD2_BK1_SPD1			0xC1 /* Source pre_drive timing set1 */
+#define ST7701_CMD2_BK1_SPD2			0xC2 /* Source EQ2 Setting */
+#define ST7701_CMD2_BK1_MIPISET1		0xD0 /* MIPI Setting 1 */
 
 /* Command2, BK0 bytes */
-#define DSI_CMD2_BK0_GAMCTRL_AJ_MASK	GENMASK(7, 6)
-#define DSI_CMD2_BK0_GAMCTRL_VC0_MASK	GENMASK(3, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC4_MASK	GENMASK(5, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC8_MASK	GENMASK(5, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC16_MASK	GENMASK(4, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC24_MASK	GENMASK(4, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC52_MASK	GENMASK(3, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC80_MASK	GENMASK(5, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC108_MASK	GENMASK(3, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC147_MASK	GENMASK(3, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC175_MASK	GENMASK(5, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC203_MASK	GENMASK(3, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC231_MASK	GENMASK(4, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC239_MASK	GENMASK(4, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC247_MASK	GENMASK(5, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC251_MASK	GENMASK(5, 0)
-#define DSI_CMD2_BK0_GAMCTRL_VC255_MASK	GENMASK(4, 0)
-#define DSI_CMD2_BK0_LNESET_LINE_MASK	GENMASK(6, 0)
-#define DSI_CMD2_BK0_LNESET_LDE_EN	BIT(7)
-#define DSI_CMD2_BK0_LNESET_LINEDELTA	GENMASK(1, 0)
-#define DSI_CMD2_BK0_PORCTRL_VBP_MASK	GENMASK(7, 0)
-#define DSI_CMD2_BK0_PORCTRL_VFP_MASK	GENMASK(7, 0)
-#define DSI_CMD2_BK0_INVSEL_ONES_MASK	GENMASK(5, 4)
-#define DSI_CMD2_BK0_INVSEL_NLINV_MASK	GENMASK(2, 0)
-#define DSI_CMD2_BK0_INVSEL_RTNI_MASK	GENMASK(4, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_AJ_MASK		GENMASK(7, 6)
+#define ST7701_CMD2_BK0_GAMCTRL_VC0_MASK	GENMASK(3, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC4_MASK	GENMASK(5, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC8_MASK	GENMASK(5, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC16_MASK	GENMASK(4, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC24_MASK	GENMASK(4, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC52_MASK	GENMASK(3, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC80_MASK	GENMASK(5, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC108_MASK	GENMASK(3, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC147_MASK	GENMASK(3, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC175_MASK	GENMASK(5, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC203_MASK	GENMASK(3, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC231_MASK	GENMASK(4, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC239_MASK	GENMASK(4, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC247_MASK	GENMASK(5, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC251_MASK	GENMASK(5, 0)
+#define ST7701_CMD2_BK0_GAMCTRL_VC255_MASK	GENMASK(4, 0)
+#define ST7701_CMD2_BK0_LNESET_LINE_MASK	GENMASK(6, 0)
+#define ST7701_CMD2_BK0_LNESET_LDE_EN		BIT(7)
+#define ST7701_CMD2_BK0_LNESET_LINEDELTA	GENMASK(1, 0)
+#define ST7701_CMD2_BK0_PORCTRL_VBP_MASK	GENMASK(7, 0)
+#define ST7701_CMD2_BK0_PORCTRL_VFP_MASK	GENMASK(7, 0)
+#define ST7701_CMD2_BK0_INVSEL_ONES_MASK	GENMASK(5, 4)
+#define ST7701_CMD2_BK0_INVSEL_NLINV_MASK	GENMASK(2, 0)
+#define ST7701_CMD2_BK0_INVSEL_RTNI_MASK	GENMASK(4, 0)
 
 /* Command2, BK1 bytes */
-#define DSI_CMD2_BK1_VRHA_MASK		GENMASK(7, 0)
-#define DSI_CMD2_BK1_VCOM_MASK		GENMASK(7, 0)
-#define DSI_CMD2_BK1_VGHSS_MASK		GENMASK(3, 0)
-#define DSI_CMD2_BK1_TESTCMD_VAL	BIT(7)
-#define DSI_CMD2_BK1_VGLS_ONES		BIT(6)
-#define DSI_CMD2_BK1_VGLS_MASK		GENMASK(3, 0)
-#define DSI_CMD2_BK1_PWRCTRL1_AP_MASK	GENMASK(7, 6)
-#define DSI_CMD2_BK1_PWRCTRL1_APIS_MASK	GENMASK(3, 2)
-#define DSI_CMD2_BK1_PWRCTRL1_APOS_MASK	GENMASK(1, 0)
-#define DSI_CMD2_BK1_PWRCTRL2_AVDD_MASK	GENMASK(5, 4)
-#define DSI_CMD2_BK1_PWRCTRL2_AVCL_MASK	GENMASK(1, 0)
-#define DSI_CMD2_BK1_SPD1_ONES_MASK	GENMASK(6, 4)
-#define DSI_CMD2_BK1_SPD1_T2D_MASK	GENMASK(3, 0)
-#define DSI_CMD2_BK1_SPD2_ONES_MASK	GENMASK(6, 4)
-#define DSI_CMD2_BK1_SPD2_T3D_MASK	GENMASK(3, 0)
-#define DSI_CMD2_BK1_MIPISET1_ONES	BIT(7)
-#define DSI_CMD2_BK1_MIPISET1_EOT_EN	BIT(3)
+#define ST7701_CMD2_BK1_VRHA_MASK		GENMASK(7, 0)
+#define ST7701_CMD2_BK1_VCOM_MASK		GENMASK(7, 0)
+#define ST7701_CMD2_BK1_VGHSS_MASK		GENMASK(3, 0)
+#define ST7701_CMD2_BK1_TESTCMD_VAL		BIT(7)
+#define ST7701_CMD2_BK1_VGLS_ONES		BIT(6)
+#define ST7701_CMD2_BK1_VGLS_MASK		GENMASK(3, 0)
+#define ST7701_CMD2_BK1_PWRCTRL1_AP_MASK	GENMASK(7, 6)
+#define ST7701_CMD2_BK1_PWRCTRL1_APIS_MASK	GENMASK(3, 2)
+#define ST7701_CMD2_BK1_PWRCTRL1_APOS_MASK	GENMASK(1, 0)
+#define ST7701_CMD2_BK1_PWRCTRL2_AVDD_MASK	GENMASK(5, 4)
+#define ST7701_CMD2_BK1_PWRCTRL2_AVCL_MASK	GENMASK(1, 0)
+#define ST7701_CMD2_BK1_SPD1_ONES_MASK		GENMASK(6, 4)
+#define ST7701_CMD2_BK1_SPD1_T2D_MASK		GENMASK(3, 0)
+#define ST7701_CMD2_BK1_SPD2_ONES_MASK		GENMASK(6, 4)
+#define ST7701_CMD2_BK1_SPD2_T3D_MASK		GENMASK(3, 0)
+#define ST7701_CMD2_BK1_MIPISET1_ONES		BIT(7)
+#define ST7701_CMD2_BK1_MIPISET1_EOT_EN		BIT(3)
 
 #define CFIELD_PREP(_mask, _val)					\
 	(((typeof(_mask))(_val) << (__builtin_ffsll(_mask) - 1)) & (_mask))
@@ -130,12 +132,16 @@ struct st7701_panel_desc {
 struct st7701 {
 	struct drm_panel panel;
 	struct mipi_dsi_device *dsi;
+	struct mipi_dbi dbi;
 	const struct st7701_panel_desc *desc;
 
 	struct regulator_bulk_data supplies[2];
 	struct gpio_desc *reset;
 	unsigned int sleep_delay;
 	enum drm_panel_orientation orientation;
+
+	int (*write_command)(struct st7701 *st7701, u8 cmd, const u8 *seq,
+			     size_t len);
 };
 
 static inline struct st7701 *panel_to_st7701(struct drm_panel *panel)
@@ -143,16 +149,22 @@ static inline struct st7701 *panel_to_st7701(struct drm_panel *panel)
 	return container_of(panel, struct st7701, panel);
 }
 
-static inline int st7701_dsi_write(struct st7701 *st7701, const void *seq,
-				   size_t len)
+static int st7701_dsi_write(struct st7701 *st7701, u8 cmd, const u8 *seq,
+			    size_t len)
 {
-	return mipi_dsi_dcs_write_buffer(st7701->dsi, seq, len);
+	return mipi_dsi_dcs_write(st7701->dsi, cmd, seq, len);
 }
 
-#define ST7701_DSI(st7701, seq...)				\
-	{							\
-		const u8 d[] = { seq };				\
-		st7701_dsi_write(st7701, d, ARRAY_SIZE(d));	\
+static int st7701_dbi_write(struct st7701 *st7701, u8 cmd, const u8 *seq,
+			    size_t len)
+{
+	return mipi_dbi_command_stackbuf(&st7701->dbi, cmd, seq, len);
+}
+
+#define ST7701_WRITE(st7701, cmd, seq...)				\
+	{								\
+		const u8 d[] = { seq };					\
+		st7701->write_command(st7701, cmd, d, ARRAY_SIZE(d));	\
 	}
 
 static u8 st7701_vgls_map(struct st7701 *st7701)
@@ -185,11 +197,11 @@ static void st7701_switch_cmd_bkx(struct st7701 *st7701, bool cmd2, u8 bkx)
 	u8 val;
 
 	if (cmd2)
-		val = DSI_CMD2 | FIELD_PREP(DSI_CMD2BK_MASK, bkx);
+		val = ST7701_CMD2 | FIELD_PREP(ST7701_CMD2BK_MASK, bkx);
 	else
-		val = DSI_CMD1;
+		val = ST7701_CMD1;
 
-	ST7701_DSI(st7701, DSI_CMD2BKX_SEL, 0x77, 0x01, 0x00, 0x00, val);
+	ST7701_WRITE(st7701, ST7701_CMD2BKX_SEL, 0x77, 0x01, 0x00, 0x00, val);
 }
 
 static void st7701_init_sequence(struct st7701 *st7701)
@@ -199,22 +211,22 @@ static void st7701_init_sequence(struct st7701 *st7701)
 	const u8 linecount8 = mode->vdisplay / 8;
 	const u8 linecountrem2 = (mode->vdisplay % 8) / 2;
 
-	ST7701_DSI(st7701, MIPI_DCS_SOFT_RESET, 0x00);
+	ST7701_WRITE(st7701, MIPI_DCS_SOFT_RESET, 0x00);
 
 	/* We need to wait 5ms before sending new commands */
 	msleep(5);
 
-	ST7701_DSI(st7701, MIPI_DCS_EXIT_SLEEP_MODE, 0x00);
+	ST7701_WRITE(st7701, MIPI_DCS_EXIT_SLEEP_MODE, 0x00);
 
 	msleep(st7701->sleep_delay);
 
 	/* Command2, BK0 */
 	st7701_switch_cmd_bkx(st7701, true, 0);
 
-	mipi_dsi_dcs_write(st7701->dsi, DSI_CMD2_BK0_PVGAMCTRL,
-			   desc->pv_gamma, ARRAY_SIZE(desc->pv_gamma));
-	mipi_dsi_dcs_write(st7701->dsi, DSI_CMD2_BK0_NVGAMCTRL,
-			   desc->nv_gamma, ARRAY_SIZE(desc->nv_gamma));
+	st7701->write_command(st7701, ST7701_CMD2_BK0_PVGAMCTRL, desc->pv_gamma,
+			      ARRAY_SIZE(desc->pv_gamma));
+	st7701->write_command(st7701, ST7701_CMD2_BK0_NVGAMCTRL, desc->nv_gamma,
+			      ARRAY_SIZE(desc->nv_gamma));
 	/*
 	 * Vertical line count configuration:
 	 * Line[6:0]: select number of vertical lines of the TFT matrix in
@@ -226,14 +238,14 @@ static void st7701_init_sequence(struct st7701 *st7701)
 	 * Total number of vertical lines:
 	 * LN = ((Line[6:0] + 1) * 8) + (LDE_EN ? Line_delta[1:0] * 2 : 0)
 	 */
-	ST7701_DSI(st7701, DSI_CMD2_BK0_LNESET,
-		   FIELD_PREP(DSI_CMD2_BK0_LNESET_LINE_MASK, linecount8 - 1) |
-		   (linecountrem2 ? DSI_CMD2_BK0_LNESET_LDE_EN : 0),
-		   FIELD_PREP(DSI_CMD2_BK0_LNESET_LINEDELTA, linecountrem2));
-	ST7701_DSI(st7701, DSI_CMD2_BK0_PORCTRL,
-		   FIELD_PREP(DSI_CMD2_BK0_PORCTRL_VBP_MASK,
+	ST7701_WRITE(st7701, ST7701_CMD2_BK0_LNESET,
+		   FIELD_PREP(ST7701_CMD2_BK0_LNESET_LINE_MASK, linecount8 - 1) |
+		   (linecountrem2 ? ST7701_CMD2_BK0_LNESET_LDE_EN : 0),
+		   FIELD_PREP(ST7701_CMD2_BK0_LNESET_LINEDELTA, linecountrem2));
+	ST7701_WRITE(st7701, ST7701_CMD2_BK0_PORCTRL,
+		   FIELD_PREP(ST7701_CMD2_BK0_PORCTRL_VBP_MASK,
 			      mode->vtotal - mode->vsync_end),
-		   FIELD_PREP(DSI_CMD2_BK0_PORCTRL_VFP_MASK,
+		   FIELD_PREP(ST7701_CMD2_BK0_PORCTRL_VFP_MASK,
 			      mode->vsync_start - mode->vdisplay));
 	/*
 	 * Horizontal pixel count configuration:
@@ -241,70 +253,70 @@ static void st7701_init_sequence(struct st7701 *st7701)
 	 * The PCLK is number of pixel clock per line, which matches
 	 * mode htotal. The minimum is 512 PCLK.
 	 */
-	ST7701_DSI(st7701, DSI_CMD2_BK0_INVSEL,
-		   DSI_CMD2_BK0_INVSEL_ONES_MASK |
-		   FIELD_PREP(DSI_CMD2_BK0_INVSEL_NLINV_MASK, desc->nlinv),
-		   FIELD_PREP(DSI_CMD2_BK0_INVSEL_RTNI_MASK,
+	ST7701_WRITE(st7701, ST7701_CMD2_BK0_INVSEL,
+		   ST7701_CMD2_BK0_INVSEL_ONES_MASK |
+		   FIELD_PREP(ST7701_CMD2_BK0_INVSEL_NLINV_MASK, desc->nlinv),
+		   FIELD_PREP(ST7701_CMD2_BK0_INVSEL_RTNI_MASK,
 			      (clamp((u32)mode->htotal, 512U, 1008U) - 512) / 16));
 
 	/* Command2, BK1 */
 	st7701_switch_cmd_bkx(st7701, true, 1);
 
 	/* Vop = 3.5375V + (VRHA[7:0] * 0.0125V) */
-	ST7701_DSI(st7701, DSI_CMD2_BK1_VRHS,
-		   FIELD_PREP(DSI_CMD2_BK1_VRHA_MASK,
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_VRHS,
+		   FIELD_PREP(ST7701_CMD2_BK1_VRHA_MASK,
 			      DIV_ROUND_CLOSEST(desc->vop_uv - 3537500, 12500)));
 
 	/* Vcom = 0.1V + (VCOM[7:0] * 0.0125V) */
-	ST7701_DSI(st7701, DSI_CMD2_BK1_VCOM,
-		   FIELD_PREP(DSI_CMD2_BK1_VCOM_MASK,
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_VCOM,
+		   FIELD_PREP(ST7701_CMD2_BK1_VCOM_MASK,
 			      DIV_ROUND_CLOSEST(desc->vcom_uv - 100000, 12500)));
 
 	/* Vgh = 11.5V + (VGHSS[7:0] * 0.5V) */
-	ST7701_DSI(st7701, DSI_CMD2_BK1_VGHSS,
-		   FIELD_PREP(DSI_CMD2_BK1_VGHSS_MASK,
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_VGHSS,
+		   FIELD_PREP(ST7701_CMD2_BK1_VGHSS_MASK,
 			      DIV_ROUND_CLOSEST(clamp(desc->vgh_mv,
 						      (u16)11500,
 						      (u16)17000) - 11500,
 						500)));
 
-	ST7701_DSI(st7701, DSI_CMD2_BK1_TESTCMD, DSI_CMD2_BK1_TESTCMD_VAL);
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_TESTCMD, ST7701_CMD2_BK1_TESTCMD_VAL);
 
 	/* Vgl is non-linear */
-	ST7701_DSI(st7701, DSI_CMD2_BK1_VGLS,
-		   DSI_CMD2_BK1_VGLS_ONES |
-		   FIELD_PREP(DSI_CMD2_BK1_VGLS_MASK, st7701_vgls_map(st7701)));
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_VGLS,
+		   ST7701_CMD2_BK1_VGLS_ONES |
+		   FIELD_PREP(ST7701_CMD2_BK1_VGLS_MASK, st7701_vgls_map(st7701)));
 
-	ST7701_DSI(st7701, DSI_CMD2_BK1_PWCTLR1,
-		   FIELD_PREP(DSI_CMD2_BK1_PWRCTRL1_AP_MASK,
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_PWCTLR1,
+		   FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL1_AP_MASK,
 			      desc->gamma_op_bias) |
-		   FIELD_PREP(DSI_CMD2_BK1_PWRCTRL1_APIS_MASK,
+		   FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL1_APIS_MASK,
 			      desc->input_op_bias) |
-		   FIELD_PREP(DSI_CMD2_BK1_PWRCTRL1_APOS_MASK,
+		   FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL1_APOS_MASK,
 			      desc->output_op_bias));
 
 	/* Avdd = 6.2V + (AVDD[1:0] * 0.2V) , Avcl = -4.4V - (AVCL[1:0] * 0.2V) */
-	ST7701_DSI(st7701, DSI_CMD2_BK1_PWCTLR2,
-		   FIELD_PREP(DSI_CMD2_BK1_PWRCTRL2_AVDD_MASK,
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_PWCTLR2,
+		   FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL2_AVDD_MASK,
 			      DIV_ROUND_CLOSEST(desc->avdd_mv - 6200, 200)) |
-		   FIELD_PREP(DSI_CMD2_BK1_PWRCTRL2_AVCL_MASK,
+		   FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL2_AVCL_MASK,
 			      DIV_ROUND_CLOSEST(-4400 - desc->avcl_mv, 200)));
 
 	/* T2D = 0.2us * T2D[3:0] */
-	ST7701_DSI(st7701, DSI_CMD2_BK1_SPD1,
-		   DSI_CMD2_BK1_SPD1_ONES_MASK |
-		   FIELD_PREP(DSI_CMD2_BK1_SPD1_T2D_MASK,
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_SPD1,
+		   ST7701_CMD2_BK1_SPD1_ONES_MASK |
+		   FIELD_PREP(ST7701_CMD2_BK1_SPD1_T2D_MASK,
 			      DIV_ROUND_CLOSEST(desc->t2d_ns, 200)));
 
 	/* T3D = 4us + (0.8us * T3D[3:0]) */
-	ST7701_DSI(st7701, DSI_CMD2_BK1_SPD2,
-		   DSI_CMD2_BK1_SPD2_ONES_MASK |
-		   FIELD_PREP(DSI_CMD2_BK1_SPD2_T3D_MASK,
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_SPD2,
+		   ST7701_CMD2_BK1_SPD2_ONES_MASK |
+		   FIELD_PREP(ST7701_CMD2_BK1_SPD2_T3D_MASK,
 			      DIV_ROUND_CLOSEST(desc->t3d_ns - 4000, 800)));
 
-	ST7701_DSI(st7701, DSI_CMD2_BK1_MIPISET1,
-		   DSI_CMD2_BK1_MIPISET1_ONES |
-		   (desc->eot_en ? DSI_CMD2_BK1_MIPISET1_EOT_EN : 0));
+	ST7701_WRITE(st7701, ST7701_CMD2_BK1_MIPISET1,
+		   ST7701_CMD2_BK1_MIPISET1_ONES |
+		   (desc->eot_en ? ST7701_CMD2_BK1_MIPISET1_EOT_EN : 0));
 }
 
 static void ts8550b_gip_sequence(struct st7701 *st7701)
@@ -313,89 +325,89 @@ static void ts8550b_gip_sequence(struct st7701 *st7701)
 	 * ST7701_SPEC_V1.2 is unable to provide enough information above this
 	 * specific command sequence, so grab the same from vendor BSP driver.
 	 */
-	ST7701_DSI(st7701, 0xE0, 0x00, 0x00, 0x02);
-	ST7701_DSI(st7701, 0xE1, 0x0B, 0x00, 0x0D, 0x00, 0x0C, 0x00, 0x0E,
+	ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
+	ST7701_WRITE(st7701, 0xE1, 0x0B, 0x00, 0x0D, 0x00, 0x0C, 0x00, 0x0E,
 		   0x00, 0x00, 0x44, 0x44);
-	ST7701_DSI(st7701, 0xE2, 0x33, 0x33, 0x44, 0x44, 0x64, 0x00, 0x66,
+	ST7701_WRITE(st7701, 0xE2, 0x33, 0x33, 0x44, 0x44, 0x64, 0x00, 0x66,
 		   0x00, 0x65, 0x00, 0x67, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xE3, 0x00, 0x00, 0x33, 0x33);
-	ST7701_DSI(st7701, 0xE4, 0x44, 0x44);
-	ST7701_DSI(st7701, 0xE5, 0x0C, 0x78, 0x3C, 0xA0, 0x0E, 0x78, 0x3C,
+	ST7701_WRITE(st7701, 0xE3, 0x00, 0x00, 0x33, 0x33);
+	ST7701_WRITE(st7701, 0xE4, 0x44, 0x44);
+	ST7701_WRITE(st7701, 0xE5, 0x0C, 0x78, 0x3C, 0xA0, 0x0E, 0x78, 0x3C,
 		   0xA0, 0x10, 0x78, 0x3C, 0xA0, 0x12, 0x78, 0x3C, 0xA0);
-	ST7701_DSI(st7701, 0xE6, 0x00, 0x00, 0x33, 0x33);
-	ST7701_DSI(st7701, 0xE7, 0x44, 0x44);
-	ST7701_DSI(st7701, 0xE8, 0x0D, 0x78, 0x3C, 0xA0, 0x0F, 0x78, 0x3C,
+	ST7701_WRITE(st7701, 0xE6, 0x00, 0x00, 0x33, 0x33);
+	ST7701_WRITE(st7701, 0xE7, 0x44, 0x44);
+	ST7701_WRITE(st7701, 0xE8, 0x0D, 0x78, 0x3C, 0xA0, 0x0F, 0x78, 0x3C,
 		   0xA0, 0x11, 0x78, 0x3C, 0xA0, 0x13, 0x78, 0x3C, 0xA0);
-	ST7701_DSI(st7701, 0xEB, 0x02, 0x02, 0x39, 0x39, 0xEE, 0x44, 0x00);
-	ST7701_DSI(st7701, 0xEC, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xED, 0xFF, 0xF1, 0x04, 0x56, 0x72, 0x3F, 0xFF,
+	ST7701_WRITE(st7701, 0xEB, 0x02, 0x02, 0x39, 0x39, 0xEE, 0x44, 0x00);
+	ST7701_WRITE(st7701, 0xEC, 0x00, 0x00);
+	ST7701_WRITE(st7701, 0xED, 0xFF, 0xF1, 0x04, 0x56, 0x72, 0x3F, 0xFF,
 		   0xFF, 0xFF, 0xFF, 0xF3, 0x27, 0x65, 0x40, 0x1F, 0xFF);
 }
 
 static void dmt028vghmcmi_1a_gip_sequence(struct st7701 *st7701)
 {
-	ST7701_DSI(st7701, 0xEE, 0x42);
-	ST7701_DSI(st7701, 0xE0, 0x00, 0x00, 0x02);
+	ST7701_WRITE(st7701, 0xEE, 0x42);
+	ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
 
-	ST7701_DSI(st7701, 0xE1,
+	ST7701_WRITE(st7701, 0xE1,
 		   0x04, 0xA0, 0x06, 0xA0,
 			   0x05, 0xA0, 0x07, 0xA0,
 			   0x00, 0x44, 0x44);
-	ST7701_DSI(st7701, 0xE2,
+	ST7701_WRITE(st7701, 0xE2,
 		   0x00, 0x00, 0x00, 0x00,
 			   0x00, 0x00, 0x00, 0x00,
 			   0x00, 0x00, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xE3,
+	ST7701_WRITE(st7701, 0xE3,
 		   0x00, 0x00, 0x22, 0x22);
-	ST7701_DSI(st7701, 0xE4, 0x44, 0x44);
-	ST7701_DSI(st7701, 0xE5,
+	ST7701_WRITE(st7701, 0xE4, 0x44, 0x44);
+	ST7701_WRITE(st7701, 0xE5,
 		   0x0C, 0x90, 0xA0, 0xA0,
 			   0x0E, 0x92, 0xA0, 0xA0,
 			   0x08, 0x8C, 0xA0, 0xA0,
 			   0x0A, 0x8E, 0xA0, 0xA0);
-	ST7701_DSI(st7701, 0xE6,
+	ST7701_WRITE(st7701, 0xE6,
 		   0x00, 0x00, 0x22, 0x22);
-	ST7701_DSI(st7701, 0xE7, 0x44, 0x44);
-	ST7701_DSI(st7701, 0xE8,
+	ST7701_WRITE(st7701, 0xE7, 0x44, 0x44);
+	ST7701_WRITE(st7701, 0xE8,
 		   0x0D, 0x91, 0xA0, 0xA0,
 			   0x0F, 0x93, 0xA0, 0xA0,
 			   0x09, 0x8D, 0xA0, 0xA0,
 			   0x0B, 0x8F, 0xA0, 0xA0);
-	ST7701_DSI(st7701, 0xEB,
+	ST7701_WRITE(st7701, 0xEB,
 		   0x00, 0x00, 0xE4, 0xE4,
 			   0x44, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xED,
+	ST7701_WRITE(st7701, 0xED,
 		   0xFF, 0xF5, 0x47, 0x6F,
 			   0x0B, 0xA1, 0xAB, 0xFF,
 			   0xFF, 0xBA, 0x1A, 0xB0,
 			   0xF6, 0x74, 0x5F, 0xFF);
-	ST7701_DSI(st7701, 0xEF,
+	ST7701_WRITE(st7701, 0xEF,
 		   0x08, 0x08, 0x08, 0x40,
 			   0x3F, 0x64);
 
 	st7701_switch_cmd_bkx(st7701, false, 0);
 
 	st7701_switch_cmd_bkx(st7701, true, 3);
-	ST7701_DSI(st7701, 0xE6, 0x7C);
-	ST7701_DSI(st7701, 0xE8, 0x00, 0x0E);
+	ST7701_WRITE(st7701, 0xE6, 0x7C);
+	ST7701_WRITE(st7701, 0xE8, 0x00, 0x0E);
 
 	st7701_switch_cmd_bkx(st7701, false, 0);
-	ST7701_DSI(st7701, 0x11);
+	ST7701_WRITE(st7701, 0x11);
 	msleep(120);
 
 	st7701_switch_cmd_bkx(st7701, true, 3);
-	ST7701_DSI(st7701, 0xE8, 0x00, 0x0C);
+	ST7701_WRITE(st7701, 0xE8, 0x00, 0x0C);
 	msleep(10);
-	ST7701_DSI(st7701, 0xE8, 0x00, 0x00);
+	ST7701_WRITE(st7701, 0xE8, 0x00, 0x00);
 
 	st7701_switch_cmd_bkx(st7701, false, 0);
-	ST7701_DSI(st7701, 0x11);
+	ST7701_WRITE(st7701, 0x11);
 	msleep(120);
-	ST7701_DSI(st7701, 0xE8, 0x00, 0x00);
+	ST7701_WRITE(st7701, 0xE8, 0x00, 0x00);
 
 	st7701_switch_cmd_bkx(st7701, false, 0);
 
-	ST7701_DSI(st7701, 0x3A, 0x70);
+	ST7701_WRITE(st7701, 0x3A, 0x70);
 }
 
 static void kd50t048a_gip_sequence(struct st7701 *st7701)
@@ -404,61 +416,110 @@ static void kd50t048a_gip_sequence(struct st7701 *st7701)
 	 * ST7701_SPEC_V1.2 is unable to provide enough information above this
 	 * specific command sequence, so grab the same from vendor BSP driver.
 	 */
-	ST7701_DSI(st7701, 0xE0, 0x00, 0x00, 0x02);
-	ST7701_DSI(st7701, 0xE1, 0x08, 0x00, 0x0A, 0x00, 0x07, 0x00, 0x09,
+	ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
+	ST7701_WRITE(st7701, 0xE1, 0x08, 0x00, 0x0A, 0x00, 0x07, 0x00, 0x09,
 		   0x00, 0x00, 0x33, 0x33);
-	ST7701_DSI(st7701, 0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	ST7701_WRITE(st7701, 0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 		   0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xE3, 0x00, 0x00, 0x33, 0x33);
-	ST7701_DSI(st7701, 0xE4, 0x44, 0x44);
-	ST7701_DSI(st7701, 0xE5, 0x0E, 0x60, 0xA0, 0xA0, 0x10, 0x60, 0xA0,
+	ST7701_WRITE(st7701, 0xE3, 0x00, 0x00, 0x33, 0x33);
+	ST7701_WRITE(st7701, 0xE4, 0x44, 0x44);
+	ST7701_WRITE(st7701, 0xE5, 0x0E, 0x60, 0xA0, 0xA0, 0x10, 0x60, 0xA0,
 		   0xA0, 0x0A, 0x60, 0xA0, 0xA0, 0x0C, 0x60, 0xA0, 0xA0);
-	ST7701_DSI(st7701, 0xE6, 0x00, 0x00, 0x33, 0x33);
-	ST7701_DSI(st7701, 0xE7, 0x44, 0x44);
-	ST7701_DSI(st7701, 0xE8, 0x0D, 0x60, 0xA0, 0xA0, 0x0F, 0x60, 0xA0,
+	ST7701_WRITE(st7701, 0xE6, 0x00, 0x00, 0x33, 0x33);
+	ST7701_WRITE(st7701, 0xE7, 0x44, 0x44);
+	ST7701_WRITE(st7701, 0xE8, 0x0D, 0x60, 0xA0, 0xA0, 0x0F, 0x60, 0xA0,
 		   0xA0, 0x09, 0x60, 0xA0, 0xA0, 0x0B, 0x60, 0xA0, 0xA0);
-	ST7701_DSI(st7701, 0xEB, 0x02, 0x01, 0xE4, 0xE4, 0x44, 0x00, 0x40);
-	ST7701_DSI(st7701, 0xEC, 0x02, 0x01);
-	ST7701_DSI(st7701, 0xED, 0xAB, 0x89, 0x76, 0x54, 0x01, 0xFF, 0xFF,
+	ST7701_WRITE(st7701, 0xEB, 0x02, 0x01, 0xE4, 0xE4, 0x44, 0x00, 0x40);
+	ST7701_WRITE(st7701, 0xEC, 0x02, 0x01);
+	ST7701_WRITE(st7701, 0xED, 0xAB, 0x89, 0x76, 0x54, 0x01, 0xFF, 0xFF,
 		   0xFF, 0xFF, 0xFF, 0xFF, 0x10, 0x45, 0x67, 0x98, 0xBA);
 }
 
 static void rg_arc_gip_sequence(struct st7701 *st7701)
 {
 	st7701_switch_cmd_bkx(st7701, true, 3);
-	ST7701_DSI(st7701, 0xEF, 0x08);
+	ST7701_WRITE(st7701, 0xEF, 0x08);
 	st7701_switch_cmd_bkx(st7701, true, 0);
-	ST7701_DSI(st7701, 0xC7, 0x04);
-	ST7701_DSI(st7701, 0xCC, 0x38);
+	ST7701_WRITE(st7701, 0xC7, 0x04);
+	ST7701_WRITE(st7701, 0xCC, 0x38);
 	st7701_switch_cmd_bkx(st7701, true, 1);
-	ST7701_DSI(st7701, 0xB9, 0x10);
-	ST7701_DSI(st7701, 0xBC, 0x03);
-	ST7701_DSI(st7701, 0xC0, 0x89);
-	ST7701_DSI(st7701, 0xE0, 0x00, 0x00, 0x02);
-	ST7701_DSI(st7701, 0xE1, 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00,
+	ST7701_WRITE(st7701, 0xB9, 0x10);
+	ST7701_WRITE(st7701, 0xBC, 0x03);
+	ST7701_WRITE(st7701, 0xC0, 0x89);
+	ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
+	ST7701_WRITE(st7701, 0xE1, 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00,
 		   0x00, 0x00, 0x20, 0x20);
-	ST7701_DSI(st7701, 0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	ST7701_WRITE(st7701, 0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 		   0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xE3, 0x00, 0x00, 0x33, 0x00);
-	ST7701_DSI(st7701, 0xE4, 0x22, 0x00);
-	ST7701_DSI(st7701, 0xE5, 0x04, 0x5C, 0xA0, 0xA0, 0x06, 0x5C, 0xA0,
+	ST7701_WRITE(st7701, 0xE3, 0x00, 0x00, 0x33, 0x00);
+	ST7701_WRITE(st7701, 0xE4, 0x22, 0x00);
+	ST7701_WRITE(st7701, 0xE5, 0x04, 0x5C, 0xA0, 0xA0, 0x06, 0x5C, 0xA0,
 		   0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xE6, 0x00, 0x00, 0x33, 0x00);
-	ST7701_DSI(st7701, 0xE7, 0x22, 0x00);
-	ST7701_DSI(st7701, 0xE8, 0x05, 0x5C, 0xA0, 0xA0, 0x07, 0x5C, 0xA0,
+	ST7701_WRITE(st7701, 0xE6, 0x00, 0x00, 0x33, 0x00);
+	ST7701_WRITE(st7701, 0xE7, 0x22, 0x00);
+	ST7701_WRITE(st7701, 0xE8, 0x05, 0x5C, 0xA0, 0xA0, 0x07, 0x5C, 0xA0,
 		   0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xEB, 0x02, 0x00, 0x40, 0x40, 0x00, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xEC, 0x00, 0x00);
-	ST7701_DSI(st7701, 0xED, 0xFA, 0x45, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF,
+	ST7701_WRITE(st7701, 0xEB, 0x02, 0x00, 0x40, 0x40, 0x00, 0x00, 0x00);
+	ST7701_WRITE(st7701, 0xEC, 0x00, 0x00);
+	ST7701_WRITE(st7701, 0xED, 0xFA, 0x45, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF,
 		   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xB0, 0x54, 0xAF);
-	ST7701_DSI(st7701, 0xEF, 0x08, 0x08, 0x08, 0x45, 0x3F, 0x54);
+	ST7701_WRITE(st7701, 0xEF, 0x08, 0x08, 0x08, 0x45, 0x3F, 0x54);
 	st7701_switch_cmd_bkx(st7701, false, 0);
-	ST7701_DSI(st7701, MIPI_DCS_SET_ADDRESS_MODE, 0x17);
-	ST7701_DSI(st7701, MIPI_DCS_SET_PIXEL_FORMAT, 0x77);
-	ST7701_DSI(st7701, MIPI_DCS_EXIT_SLEEP_MODE, 0x00);
+	ST7701_WRITE(st7701, MIPI_DCS_SET_ADDRESS_MODE, 0x17);
+	ST7701_WRITE(st7701, MIPI_DCS_SET_PIXEL_FORMAT, 0x77);
+	ST7701_WRITE(st7701, MIPI_DCS_EXIT_SLEEP_MODE, 0x00);
 	msleep(120);
 }
 
+static void rg28xx_gip_sequence(struct st7701 *st7701)
+{
+	st7701_switch_cmd_bkx(st7701, true, 3);
+	ST7701_WRITE(st7701, 0xEF, 0x08);
+
+	st7701_switch_cmd_bkx(st7701, true, 0);
+	ST7701_WRITE(st7701, 0xC3, 0x02, 0x10, 0x02);
+	ST7701_WRITE(st7701, 0xC7, 0x04);
+	ST7701_WRITE(st7701, 0xCC, 0x10);
+
+	st7701_switch_cmd_bkx(st7701, true, 1);
+	ST7701_WRITE(st7701, 0xEE, 0x42);
+	ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
+
+	ST7701_WRITE(st7701, 0xE1, 0x04, 0xA0, 0x06, 0xA0, 0x05, 0xA0, 0x07, 0xA0,
+		   0x00, 0x44, 0x44);
+	ST7701_WRITE(st7701, 0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		   0x00, 0x00, 0x00, 0x00);
+	ST7701_WRITE(st7701, 0xE3, 0x00, 0x00, 0x22, 0x22);
+	ST7701_WRITE(st7701, 0xE4, 0x44, 0x44);
+	ST7701_WRITE(st7701, 0xE5, 0x0C, 0x90, 0xA0, 0xA0, 0x0E, 0x92, 0xA0, 0xA0,
+		   0x08, 0x8C, 0xA0, 0xA0, 0x0A, 0x8E, 0xA0, 0xA0);
+	ST7701_WRITE(st7701, 0xE6, 0x00, 0x00, 0x22, 0x22);
+	ST7701_WRITE(st7701, 0xE7, 0x44, 0x44);
+	ST7701_WRITE(st7701, 0xE8, 0x0D, 0x91, 0xA0, 0xA0, 0x0F, 0x93, 0xA0, 0xA0,
+		   0x09, 0x8D, 0xA0, 0xA0, 0x0B, 0x8F, 0xA0, 0xA0);
+	ST7701_WRITE(st7701, 0xEB, 0x00, 0x00, 0xE4, 0xE4, 0x44, 0x00, 0x40);
+	ST7701_WRITE(st7701, 0xED, 0xFF, 0xF5, 0x47, 0x6F, 0x0B, 0xA1, 0xBA, 0xFF,
+		   0xFF, 0xAB, 0x1A, 0xB0, 0xF6, 0x74, 0x5F, 0xFF);
+	ST7701_WRITE(st7701, 0xEF, 0x08, 0x08, 0x08, 0x45, 0x3F, 0x54);
+
+	st7701_switch_cmd_bkx(st7701, false, 0);
+
+	st7701_switch_cmd_bkx(st7701, true, 3);
+	ST7701_WRITE(st7701, 0xE6, 0x16);
+	ST7701_WRITE(st7701, 0xE8, 0x00, 0x0E);
+
+	st7701_switch_cmd_bkx(st7701, false, 0);
+	ST7701_WRITE(st7701, MIPI_DCS_SET_ADDRESS_MODE, 0x10);
+	ST7701_WRITE(st7701, MIPI_DCS_EXIT_SLEEP_MODE);
+	msleep(120);
+
+	st7701_switch_cmd_bkx(st7701, true, 3);
+	ST7701_WRITE(st7701, 0xE8, 0x00, 0x0C);
+	msleep(10);
+	ST7701_WRITE(st7701, 0xE8, 0x00, 0x00);
+	st7701_switch_cmd_bkx(st7701, false, 0);
+}
+
 static int st7701_prepare(struct drm_panel *panel)
 {
 	struct st7701 *st7701 = panel_to_st7701(panel);
@@ -490,7 +551,7 @@ static int st7701_enable(struct drm_panel *panel)
 {
 	struct st7701 *st7701 = panel_to_st7701(panel);
 
-	ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_ON, 0x00);
+	ST7701_WRITE(st7701, MIPI_DCS_SET_DISPLAY_ON, 0x00);
 
 	return 0;
 }
@@ -499,7 +560,7 @@ static int st7701_disable(struct drm_panel *panel)
 {
 	struct st7701 *st7701 = panel_to_st7701(panel);
 
-	ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_OFF, 0x00);
+	ST7701_WRITE(st7701, MIPI_DCS_SET_DISPLAY_OFF, 0x00);
 
 	return 0;
 }
@@ -508,7 +569,7 @@ static int st7701_unprepare(struct drm_panel *panel)
 {
 	struct st7701 *st7701 = panel_to_st7701(panel);
 
-	ST7701_DSI(st7701, MIPI_DCS_ENTER_SLEEP_MODE, 0x00);
+	ST7701_WRITE(st7701, MIPI_DCS_ENTER_SLEEP_MODE, 0x00);
 
 	msleep(st7701->sleep_delay);
 
@@ -539,7 +600,7 @@ static int st7701_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, desc_mode);
 	if (!mode) {
-		dev_err(&st7701->dsi->dev, "failed to add mode %ux%u@%u\n",
+		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
 			desc_mode->hdisplay, desc_mode->vdisplay,
 			drm_mode_vrefresh(desc_mode));
 		return -ENOMEM;
@@ -602,62 +663,62 @@ static const struct st7701_panel_desc ts8550b_desc = {
 	.panel_sleep_delay = 80, /* panel need extra 80ms for sleep out cmd */
 
 	.pv_gamma = {
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0xe),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x15),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0xf),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xe),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x15),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xf),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x8),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x8),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x23),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x23),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0x12),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x2b),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x34),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x12),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x2b),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x34),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
 	},
 	.nv_gamma = {
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0xe),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0x2) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x15),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0xf),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xe),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0x2) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x15),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xf),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x13),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x7),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x9),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x13),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x7),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x9),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x22),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x10),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x22),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x10),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0xe),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x2c),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x34),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0xe),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x2c),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x34),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
 	},
 	.nlinv = 7,
 	.vop_uv = 4400000,
@@ -703,62 +764,62 @@ static const struct st7701_panel_desc dmt028vghmcmi_1a_desc = {
 	.panel_sleep_delay = 5, /* panel need extra 5ms for sleep out cmd */
 
 	.pv_gamma = {
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0x10),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x17),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0xd),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0x10),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x17),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xd),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x5),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x5),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x7),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x1f),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x11),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x7),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x1f),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x11),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0xe),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x29),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0xe),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x29),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
 	},
 	.nv_gamma = {
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0xd),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0xe),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xd),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xe),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x4),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x4),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x20),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x20),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0x13),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x26),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x13),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x26),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
 	},
 	.nlinv = 1,
 	.vop_uv = 4800000,
@@ -802,62 +863,62 @@ static const struct st7701_panel_desc kd50t048a_desc = {
 	.panel_sleep_delay = 0,
 
 	.pv_gamma = {
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0xd),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0xd),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xd),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xd),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x10),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x5),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x2),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x10),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x5),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x2),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x1e),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x1e),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0x11),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 2) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x23),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x29),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x18)
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x11),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 2) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x23),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x29),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x18)
 	},
 	.nv_gamma = {
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0xc),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0xc),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xc),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xc),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x10),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x5),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x3),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x10),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x5),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x3),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x7),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x20),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x7),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x20),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0x11),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 2) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x24),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x29),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x18)
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x11),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 2) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x24),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x29),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x18)
 	},
 	.nlinv = 1,
 	.vop_uv = 4887500,
@@ -901,62 +962,62 @@ static const struct st7701_panel_desc rg_arc_desc = {
 	.panel_sleep_delay = 80,
 
 	.pv_gamma = {
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0x01) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0x16),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x1d),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0x0e),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0x01) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0x16),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x1d),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0x0e),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x12),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x06),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x0c),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x0a),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x12),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x06),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x0c),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x0a),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x09),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x25),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x00),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x03),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x09),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x25),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x00),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x03),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0x00),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x3f),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x3f),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1c)
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x00),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x3f),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x3f),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1c)
 	},
 	.nv_gamma = {
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0x01) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0x16),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x1e),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0x0e),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0x01) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0x16),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x1e),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0x0e),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x06),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x0c),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x08),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x06),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x0c),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x08),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x09),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x26),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x00),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x15),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x09),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x26),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x00),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x15),
 
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0x00),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x3f),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x3f),
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
-		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1c)
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x00),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x3f),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x3f),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1c)
 	},
 	.nlinv = 0,
 	.vop_uv = 4500000,
@@ -974,42 +1035,148 @@ static const struct st7701_panel_desc rg_arc_desc = {
 	.gip_sequence = rg_arc_gip_sequence,
 };
 
-static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
+static const struct drm_display_mode rg28xx_mode = {
+	.clock		= 22325,
+
+	.hdisplay	= 480,
+	.hsync_start	= 480 + 40,
+	.hsync_end	= 480 + 40 + 4,
+	.htotal		= 480 + 40 + 4 + 20,
+
+	.vdisplay	= 640,
+	.vsync_start	= 640 + 2,
+	.vsync_end	= 640 + 2 + 40,
+	.vtotal		= 640 + 2 + 40 + 16,
+
+	.width_mm	= 44,
+	.height_mm	= 58,
+
+	.flags		= DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+
+	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+};
+
+static const struct st7701_panel_desc rg28xx_desc = {
+	.mode = &rg28xx_mode,
+
+	.panel_sleep_delay = 80,
+
+	.pv_gamma = {
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0x10),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x17),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xd),
+
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x5),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
+
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x7),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x1f),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x11),
+
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0xe),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x29),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
+	},
+	.nv_gamma = {
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xd),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xe),
+
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x4),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
+
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x20),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
+
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x13),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x26),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
+		CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
+	},
+	.nlinv = 7,
+	.vop_uv = 4800000,
+	.vcom_uv = 1512500,
+	.vgh_mv = 15000,
+	.vgl_mv = -11730,
+	.avdd_mv = 6600,
+	.avcl_mv = -4400,
+	.gamma_op_bias = OP_BIAS_MIDDLE,
+	.input_op_bias = OP_BIAS_MIN,
+	.output_op_bias = OP_BIAS_MIN,
+	.t2d_ns = 1600,
+	.t3d_ns = 10400,
+	.eot_en = true,
+	.gip_sequence = rg28xx_gip_sequence,
+};
+
+static void st7701_cleanup(void *data)
+{
+	struct st7701 *st7701 = (struct st7701 *)data;
+
+	drm_panel_remove(&st7701->panel);
+	drm_panel_disable(&st7701->panel);
+	drm_panel_unprepare(&st7701->panel);
+}
+
+static int st7701_probe(struct device *dev, int connector_type)
 {
 	const struct st7701_panel_desc *desc;
 	struct st7701 *st7701;
 	int ret;
 
-	st7701 = devm_kzalloc(&dsi->dev, sizeof(*st7701), GFP_KERNEL);
+	st7701 = devm_kzalloc(dev, sizeof(*st7701), GFP_KERNEL);
 	if (!st7701)
 		return -ENOMEM;
 
-	desc = of_device_get_match_data(&dsi->dev);
-	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
-			  MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS;
-	dsi->format = desc->format;
-	dsi->lanes = desc->lanes;
+	desc = of_device_get_match_data(dev);
+	if (!desc)
+		return -ENODEV;
 
 	st7701->supplies[0].supply = "VCC";
 	st7701->supplies[1].supply = "IOVCC";
 
-	ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(st7701->supplies),
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(st7701->supplies),
 				      st7701->supplies);
 	if (ret < 0)
 		return ret;
 
-	st7701->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
+	st7701->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(st7701->reset)) {
-		dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
+		dev_err(dev, "Couldn't get our reset GPIO\n");
 		return PTR_ERR(st7701->reset);
 	}
 
-	ret = of_drm_get_panel_orientation(dsi->dev.of_node, &st7701->orientation);
+	ret = of_drm_get_panel_orientation(dev->of_node, &st7701->orientation);
 	if (ret < 0)
-		return dev_err_probe(&dsi->dev, ret, "Failed to get orientation\n");
+		return dev_err_probe(dev, ret, "Failed to get orientation\n");
 
-	drm_panel_init(&st7701->panel, &dsi->dev, &st7701_funcs,
-		       DRM_MODE_CONNECTOR_DSI);
+	drm_panel_init(&st7701->panel, dev, &st7701_funcs, connector_type);
 
 	/**
 	 * Once sleep out has been issued, ST7701 IC required to wait 120ms
@@ -1028,48 +1195,143 @@ static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
 
 	drm_panel_add(&st7701->panel);
 
-	mipi_dsi_set_drvdata(dsi, st7701);
-	st7701->dsi = dsi;
+	dev_set_drvdata(dev, st7701);
 	st7701->desc = desc;
 
-	ret = mipi_dsi_attach(dsi);
-	if (ret)
-		goto err_attach;
+	return devm_add_action_or_reset(dev, st7701_cleanup, st7701);
+}
+
+static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
+{
+	struct st7701 *st7701;
+	int err;
+
+	err = st7701_probe(&dsi->dev, DRM_MODE_CONNECTOR_DSI);
+	if (err)
+		return err;
+
+	st7701 = dev_get_drvdata(&dsi->dev);
+	st7701->dsi = dsi;
+	st7701->write_command = st7701_dsi_write;
+
+	if (!st7701->desc->lanes)
+		return dev_err_probe(&dsi->dev, -EINVAL, "This panel is not for MIPI DSI\n");
+
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+			  MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS;
+	dsi->format = st7701->desc->format;
+	dsi->lanes = st7701->desc->lanes;
+
+	err = mipi_dsi_attach(dsi);
+	if (err)
+		return dev_err_probe(&dsi->dev, err, "Failed to init MIPI DSI\n");
 
 	return 0;
+}
 
-err_attach:
-	drm_panel_remove(&st7701->panel);
-	return ret;
+static int st7701_spi_probe(struct spi_device *spi)
+{
+	struct st7701 *st7701;
+	struct gpio_desc *dc;
+	int err;
+
+	err = st7701_probe(&spi->dev, DRM_MODE_CONNECTOR_DPI);
+	if (err)
+		return err;
+
+	st7701 = dev_get_drvdata(&spi->dev);
+	st7701->write_command = st7701_dbi_write;
+
+	dc = devm_gpiod_get_optional(&spi->dev, "dc", GPIOD_OUT_LOW);
+	if (IS_ERR(dc))
+		return dev_err_probe(&spi->dev, PTR_ERR(dc), "Failed to get GPIO for D/CX\n");
+
+	err = mipi_dbi_spi_init(spi, &st7701->dbi, dc);
+	if (err)
+		return dev_err_probe(&spi->dev, err, "Failed to init MIPI DBI\n");
+	st7701->dbi.read_commands = NULL;
+
+	return 0;
 }
 
 static void st7701_dsi_remove(struct mipi_dsi_device *dsi)
 {
-	struct st7701 *st7701 = mipi_dsi_get_drvdata(dsi);
-
 	mipi_dsi_detach(dsi);
-	drm_panel_remove(&st7701->panel);
 }
 
-static const struct of_device_id st7701_of_match[] = {
+static const struct of_device_id st7701_dsi_of_match[] = {
 	{ .compatible = "anbernic,rg-arc-panel", .data = &rg_arc_desc },
 	{ .compatible = "densitron,dmt028vghmcmi-1a", .data = &dmt028vghmcmi_1a_desc },
 	{ .compatible = "elida,kd50t048a", .data = &kd50t048a_desc },
 	{ .compatible = "techstar,ts8550b", .data = &ts8550b_desc },
 	{ }
 };
-MODULE_DEVICE_TABLE(of, st7701_of_match);
+MODULE_DEVICE_TABLE(of, st7701_dsi_of_match);
+
+static const struct of_device_id st7701_spi_of_match[] = {
+	{ .compatible = "anbernic,rg28xx-panel", .data = &rg28xx_desc },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, st7701_spi_of_match);
+
+static const struct spi_device_id st7701_spi_ids[] = {
+	{ "rg28xx-panel" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(spi, st7701_spi_ids);
 
 static struct mipi_dsi_driver st7701_dsi_driver = {
 	.probe		= st7701_dsi_probe,
 	.remove		= st7701_dsi_remove,
 	.driver = {
 		.name		= "st7701",
-		.of_match_table	= st7701_of_match,
+		.of_match_table	= st7701_dsi_of_match,
 	},
 };
-module_mipi_dsi_driver(st7701_dsi_driver);
+
+static struct spi_driver st7701_spi_driver = {
+	.probe		= st7701_spi_probe,
+	.id_table	= st7701_spi_ids,
+	.driver = {
+		.name		= "st7701",
+		.of_match_table	= st7701_spi_of_match,
+	},
+};
+
+static int __init st7701_driver_init(void)
+{
+	int err;
+
+	if (IS_ENABLED(CONFIG_SPI)) {
+		err = spi_register_driver(&st7701_spi_driver);
+		if (err)
+			return err;
+	}
+
+	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
+		err = mipi_dsi_driver_register(&st7701_dsi_driver);
+		if (err) {
+			if (IS_ENABLED(CONFIG_SPI))
+				spi_unregister_driver(&st7701_spi_driver);
+			return err;
+		}
+	}
+
+	return 0;
+}
+module_init(st7701_driver_init);
+
+static void __exit st7701_driver_exit(void)
+{
+	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
+		mipi_dsi_driver_unregister(&st7701_dsi_driver);
+
+	if (IS_ENABLED(CONFIG_SPI))
+		spi_unregister_driver(&st7701_spi_driver);
+}
+module_exit(st7701_driver_exit);
 
 MODULE_AUTHOR("Jagan Teki <jagan@amarulasolutions.com>");
+MODULE_AUTHOR("Hironori KIKUCHI <kikuchan98@gmail.com>");
 MODULE_DESCRIPTION("Sitronix ST7701 LCD Panel Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/udl/udl_edid.c b/drivers/gpu/drm/udl/udl_edid.c
index d67e6bf1f2ae..12f48ae17073 100644
--- a/drivers/gpu/drm/udl/udl_edid.c
+++ b/drivers/gpu/drm/udl/udl_edid.c
@@ -69,7 +69,7 @@ bool udl_probe_edid(struct udl_device *udl)
 	 * The adapter sends all-zeros if no monitor has been
 	 * connected. We consider anything else a connection.
 	 */
-	return !!memchr_inv(hdr, 0, sizeof(hdr));
+	return !mem_is_zero(hdr, sizeof(hdr));
 }
 
 const struct drm_edid *udl_edid_read(struct drm_connector *connector)
diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c
index 86d629e45307..3f72be7490d5 100644
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -469,7 +469,7 @@ struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t unaligned_size,
 
 	if (IS_ERR(dma_obj)) {
 		struct drm_printer p = drm_info_printer(vc4->base.dev);
-		DRM_ERROR("Failed to allocate from GEM DMA helper:\n");
+		drm_err(dev, "Failed to allocate from GEM DMA helper:\n");
 		vc4_bo_stats_print(&p, vc4);
 		return ERR_PTR(-ENOMEM);
 	}
@@ -702,7 +702,7 @@ static struct dma_buf *vc4_prime_export(struct drm_gem_object *obj, int flags)
 	 */
 	ret = vc4_bo_inc_usecnt(bo);
 	if (ret) {
-		DRM_ERROR("Failed to increment BO usecnt\n");
+		drm_err(obj->dev, "Failed to increment BO usecnt\n");
 		return ERR_PTR(ret);
 	}
 
@@ -1050,10 +1050,10 @@ static void vc4_bo_cache_destroy(struct drm_device *dev, void *unused)
 
 	for (i = 0; i < vc4->num_labels; i++) {
 		if (vc4->bo_labels[i].num_allocated) {
-			DRM_ERROR("Destroying BO cache with %d %s "
-				  "BOs still allocated\n",
-				  vc4->bo_labels[i].num_allocated,
-				  vc4->bo_labels[i].name);
+			drm_err(dev, "Destroying BO cache with %d %s "
+				"BOs still allocated\n",
+				vc4->bo_labels[i].num_allocated,
+				vc4->bo_labels[i].name);
 		}
 
 		if (is_user_label(i))
@@ -1083,7 +1083,7 @@ int vc4_label_bo_ioctl(struct drm_device *dev, void *data,
 
 	gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 	if (!gem_obj) {
-		DRM_ERROR("Failed to look up GEM BO %d\n", args->handle);
+		drm_err(dev, "Failed to look up GEM BO %d\n", args->handle);
 		kfree(name);
 		return -ENOENT;
 	}
diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
index 39152e755a13..a382dc4654bd 100644
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -199,8 +199,8 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
 						       DPI_FORMAT);
 				break;
 			default:
-				DRM_ERROR("Unknown media bus format %d\n",
-					  bus_format);
+				drm_err(dev, "Unknown media bus format %d\n",
+					bus_format);
 				break;
 			}
 		}
@@ -236,11 +236,11 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
 
 	ret = clk_set_rate(dpi->pixel_clock, mode->clock * 1000);
 	if (ret)
-		DRM_ERROR("Failed to set clock rate: %d\n", ret);
+		drm_err(dev, "Failed to set clock rate: %d\n", ret);
 
 	ret = clk_prepare_enable(dpi->pixel_clock);
 	if (ret)
-		DRM_ERROR("Failed to set clock rate: %d\n", ret);
+		drm_err(dev, "Failed to set clock rate: %d\n", ret);
 
 	drm_dev_exit(idx);
 }
@@ -339,7 +339,7 @@ static int vc4_dpi_bind(struct device *dev, struct device *master, void *data)
 	if (IS_ERR(dpi->core_clock)) {
 		ret = PTR_ERR(dpi->core_clock);
 		if (ret != -EPROBE_DEFER)
-			DRM_ERROR("Failed to get core clock: %d\n", ret);
+			drm_err(drm, "Failed to get core clock: %d\n", ret);
 		return ret;
 	}
 
@@ -347,13 +347,13 @@ static int vc4_dpi_bind(struct device *dev, struct device *master, void *data)
 	if (IS_ERR(dpi->pixel_clock)) {
 		ret = PTR_ERR(dpi->pixel_clock);
 		if (ret != -EPROBE_DEFER)
-			DRM_ERROR("Failed to get pixel clock: %d\n", ret);
+			drm_err(drm, "Failed to get pixel clock: %d\n", ret);
 		return ret;
 	}
 
 	ret = clk_prepare_enable(dpi->core_clock);
 	if (ret) {
-		DRM_ERROR("Failed to turn on core clock: %d\n", ret);
+		drm_err(drm, "Failed to turn on core clock: %d\n", ret);
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
index 46f6c4ce61c5..f5ccc1bf7a63 100644
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -613,6 +613,7 @@ struct vc4_dsi {
 static inline void
 dsi_dma_workaround_write(struct vc4_dsi *dsi, u32 offset, u32 val)
 {
+	struct drm_device *drm = dsi->bridge.dev;
 	struct dma_chan *chan = dsi->reg_dma_chan;
 	struct dma_async_tx_descriptor *tx;
 	dma_cookie_t cookie;
@@ -633,19 +634,19 @@ dsi_dma_workaround_write(struct vc4_dsi *dsi, u32 offset, u32 val)
 						  dsi->reg_dma_paddr,
 						  4, 0);
 	if (!tx) {
-		DRM_ERROR("Failed to set up DMA register write\n");
+		drm_err(drm, "Failed to set up DMA register write\n");
 		return;
 	}
 
 	cookie = tx->tx_submit(tx);
 	ret = dma_submit_error(cookie);
 	if (ret) {
-		DRM_ERROR("Failed to submit DMA: %d\n", ret);
+		drm_err(drm, "Failed to submit DMA: %d\n", ret);
 		return;
 	}
 	ret = dma_sync_wait(chan, cookie);
 	if (ret)
-		DRM_ERROR("Failed to wait for DMA: %d\n", ret);
+		drm_err(drm, "Failed to wait for DMA: %d\n", ret);
 }
 
 #define DSI_READ(offset)								\
@@ -893,7 +894,7 @@ static void vc4_dsi_bridge_pre_enable(struct drm_bridge *bridge,
 
 	ret = pm_runtime_resume_and_get(dev);
 	if (ret) {
-		DRM_ERROR("Failed to runtime PM enable on DSI%d\n", dsi->variant->port);
+		drm_err(bridge->dev, "Failed to runtime PM enable on DSI%d\n", dsi->variant->port);
 		return;
 	}
 
@@ -986,13 +987,14 @@ static void vc4_dsi_bridge_pre_enable(struct drm_bridge *bridge,
 
 	ret = clk_prepare_enable(dsi->escape_clock);
 	if (ret) {
-		DRM_ERROR("Failed to turn on DSI escape clock: %d\n", ret);
+		drm_err(bridge->dev, "Failed to turn on DSI escape clock: %d\n",
+			ret);
 		return;
 	}
 
 	ret = clk_prepare_enable(dsi->pll_phy_clock);
 	if (ret) {
-		DRM_ERROR("Failed to turn on DSI PLL: %d\n", ret);
+		drm_err(bridge->dev, "Failed to turn on DSI PLL: %d\n", ret);
 		return;
 	}
 
@@ -1014,7 +1016,7 @@ static void vc4_dsi_bridge_pre_enable(struct drm_bridge *bridge,
 
 	ret = clk_prepare_enable(dsi->pixel_clock);
 	if (ret) {
-		DRM_ERROR("Failed to turn on DSI pixel clock: %d\n", ret);
+		drm_err(bridge->dev, "Failed to turn on DSI pixel clock: %d\n", ret);
 		return;
 	}
 
@@ -1172,6 +1174,7 @@ static ssize_t vc4_dsi_host_transfer(struct mipi_dsi_host *host,
 				     const struct mipi_dsi_msg *msg)
 {
 	struct vc4_dsi *dsi = host_to_dsi(host);
+	struct drm_device *drm = dsi->bridge.dev;
 	struct mipi_dsi_packet packet;
 	u32 pkth = 0, pktc = 0;
 	int i, ret;
@@ -1303,8 +1306,8 @@ static ssize_t vc4_dsi_host_transfer(struct mipi_dsi_host *host,
 						  DSI_RXPKT1H_BC_PARAM);
 
 			if (rxlen != msg->rx_len) {
-				DRM_ERROR("DSI returned %db, expecting %db\n",
-					  rxlen, (int)msg->rx_len);
+				drm_err(drm, "DSI returned %db, expecting %db\n",
+					rxlen, (int)msg->rx_len);
 				ret = -ENXIO;
 				goto reset_fifo_and_return;
 			}
@@ -1326,7 +1329,7 @@ static ssize_t vc4_dsi_host_transfer(struct mipi_dsi_host *host,
 	return ret;
 
 reset_fifo_and_return:
-	DRM_ERROR("DSI transfer failed, resetting: %d\n", ret);
+	drm_err(drm, "DSI transfer failed, resetting: %d\n", ret);
 
 	DSI_PORT_WRITE(TXPKT1C, DSI_PORT_READ(TXPKT1C) & ~DSI_TXPKT1C_CMD_EN);
 	udelay(1);
@@ -1468,7 +1471,8 @@ static void dsi_handle_error(struct vc4_dsi *dsi,
 	if (!(stat & bit))
 		return;
 
-	DRM_ERROR("DSI%d: %s error\n", dsi->variant->port, type);
+	drm_err(dsi->bridge.dev, "DSI%d: %s error\n", dsi->variant->port,
+		type);
 	*ret = IRQ_HANDLED;
 }
 
@@ -1687,7 +1691,7 @@ static int vc4_dsi_bind(struct device *dev, struct device *master, void *data)
 						      &dsi->reg_dma_paddr,
 						      GFP_KERNEL);
 		if (!dsi->reg_dma_mem) {
-			DRM_ERROR("Failed to get DMA memory\n");
+			drm_err(drm, "Failed to get DMA memory\n");
 			return -ENOMEM;
 		}
 
@@ -1702,8 +1706,8 @@ static int vc4_dsi_bind(struct device *dev, struct device *master, void *data)
 		if (IS_ERR(dsi->reg_dma_chan)) {
 			ret = PTR_ERR(dsi->reg_dma_chan);
 			if (ret != -EPROBE_DEFER)
-				DRM_ERROR("Failed to get DMA channel: %d\n",
-					  ret);
+				drm_err(drm, "Failed to get DMA channel: %d\n",
+					ret);
 			return ret;
 		}
 
diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c
index 03648f954985..24fb1b57e1dd 100644
--- a/drivers/gpu/drm/vc4/vc4_gem.c
+++ b/drivers/gpu/drm/vc4/vc4_gem.c
@@ -832,8 +832,8 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec)
 	 */
 	temp = kvmalloc_array(temp_size, 1, GFP_KERNEL);
 	if (!temp) {
-		DRM_ERROR("Failed to allocate storage for copying "
-			  "in bin/render CLs.\n");
+		drm_err(dev, "Failed to allocate storage for copying "
+			"in bin/render CLs.\n");
 		ret = -ENOMEM;
 		goto fail;
 	}
@@ -866,7 +866,7 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec)
 
 	bo = vc4_bo_create(dev, exec_size, true, VC4_BO_TYPE_BCL);
 	if (IS_ERR(bo)) {
-		DRM_ERROR("Couldn't allocate BO for binning\n");
+		drm_err(dev, "Couldn't allocate BO for binning\n");
 		ret = PTR_ERR(bo);
 		goto fail;
 	}
@@ -1153,10 +1153,9 @@ vc4_submit_cl_ioctl(struct drm_device *dev, void *data,
 	}
 
 	exec = kcalloc(1, sizeof(*exec), GFP_KERNEL);
-	if (!exec) {
-		DRM_ERROR("malloc failure on exec struct\n");
+	if (!exec)
 		return -ENOMEM;
-	}
+
 	exec->dev = vc4;
 
 	ret = vc4_v3d_pm_get(vc4);
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index d57c4a5948c8..6611ab7c26a6 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -429,6 +429,7 @@ static int vc4_hdmi_connector_detect_ctx(struct drm_connector *connector,
 {
 	struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
 	enum drm_connector_status status = connector_status_disconnected;
+	int ret;
 
 	/*
 	 * NOTE: This function should really take vc4_hdmi->mutex, but
@@ -441,7 +442,12 @@ static int vc4_hdmi_connector_detect_ctx(struct drm_connector *connector,
 	 * the lock for now.
 	 */
 
-	WARN_ON(pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev));
+	ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev);
+	if (ret) {
+		drm_err_once(connector->dev, "Failed to retain HDMI power domain: %d\n",
+			     ret);
+		return connector_status_unknown;
+	}
 
 	if (vc4_hdmi->hpd_gpio) {
 		if (gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio))
@@ -698,7 +704,7 @@ static int vc4_hdmi_write_infoframe(struct drm_connector *connector,
 
 	ret = vc4_hdmi_stop_packet(vc4_hdmi, type, true);
 	if (ret) {
-		DRM_ERROR("Failed to wait for infoframe to go idle: %d\n", ret);
+		drm_err(drm, "Failed to wait for infoframe to go idle: %d\n", ret);
 		goto out;
 	}
 
@@ -734,7 +740,7 @@ static int vc4_hdmi_write_infoframe(struct drm_connector *connector,
 	ret = wait_for((HDMI_READ(HDMI_RAM_PACKET_STATUS) &
 			BIT(packet_id)), 100);
 	if (ret)
-		DRM_ERROR("Failed to wait for infoframe to start: %d\n", ret);
+		drm_err(drm, "Failed to wait for infoframe to start: %d\n", ret);
 
 out:
 	drm_dev_exit(idx);
@@ -895,7 +901,7 @@ static void vc4_hdmi_encoder_post_crtc_powerdown(struct drm_encoder *encoder,
 
 	ret = pm_runtime_put(&vc4_hdmi->pdev->dev);
 	if (ret < 0)
-		DRM_ERROR("Failed to release power domain: %d\n", ret);
+		drm_err(drm, "Failed to release power domain: %d\n", ret);
 
 	drm_dev_exit(idx);
 
@@ -1437,7 +1443,7 @@ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
 
 	ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev);
 	if (ret < 0) {
-		DRM_ERROR("Failed to retain power domain: %d\n", ret);
+		drm_err(drm, "Failed to retain power domain: %d\n", ret);
 		goto err_dev_exit;
 	}
 
@@ -1462,19 +1468,19 @@ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
 			 div_u64(tmds_char_rate, 100) * 101);
 	ret = clk_set_min_rate(vc4_hdmi->hsm_clock, hsm_rate);
 	if (ret) {
-		DRM_ERROR("Failed to set HSM clock rate: %d\n", ret);
+		drm_err(drm, "Failed to set HSM clock rate: %d\n", ret);
 		goto err_put_runtime_pm;
 	}
 
 	ret = clk_set_rate(vc4_hdmi->pixel_clock, tmds_char_rate);
 	if (ret) {
-		DRM_ERROR("Failed to set pixel clock rate: %d\n", ret);
+		drm_err(drm, "Failed to set pixel clock rate: %d\n", ret);
 		goto err_put_runtime_pm;
 	}
 
 	ret = clk_prepare_enable(vc4_hdmi->pixel_clock);
 	if (ret) {
-		DRM_ERROR("Failed to turn on pixel clock: %d\n", ret);
+		drm_err(drm, "Failed to turn on pixel clock: %d\n", ret);
 		goto err_put_runtime_pm;
 	}
 
@@ -1490,13 +1496,13 @@ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
 
 	ret = clk_set_min_rate(vc4_hdmi->pixel_bvb_clock, bvb_rate);
 	if (ret) {
-		DRM_ERROR("Failed to set pixel bvb clock rate: %d\n", ret);
+		drm_err(drm, "Failed to set pixel bvb clock rate: %d\n", ret);
 		goto err_disable_pixel_clock;
 	}
 
 	ret = clk_prepare_enable(vc4_hdmi->pixel_bvb_clock);
 	if (ret) {
-		DRM_ERROR("Failed to turn on pixel bvb clock: %d\n", ret);
+		drm_err(drm, "Failed to turn on pixel bvb clock: %d\n", ret);
 		goto err_disable_pixel_clock;
 	}
 
@@ -2945,13 +2951,13 @@ static int vc4_hdmi_init_resources(struct drm_device *drm,
 	if (IS_ERR(vc4_hdmi->pixel_clock)) {
 		ret = PTR_ERR(vc4_hdmi->pixel_clock);
 		if (ret != -EPROBE_DEFER)
-			DRM_ERROR("Failed to get pixel clock\n");
+			drm_err(drm, "Failed to get pixel clock\n");
 		return ret;
 	}
 
 	vc4_hdmi->hsm_clock = devm_clk_get(dev, "hdmi");
 	if (IS_ERR(vc4_hdmi->hsm_clock)) {
-		DRM_ERROR("Failed to get HDMI state machine clock\n");
+		drm_err(drm, "Failed to get HDMI state machine clock\n");
 		return PTR_ERR(vc4_hdmi->hsm_clock);
 	}
 	vc4_hdmi->audio_clock = vc4_hdmi->hsm_clock;
@@ -3035,31 +3041,31 @@ static int vc5_hdmi_init_resources(struct drm_device *drm,
 
 	vc4_hdmi->hsm_clock = devm_clk_get(dev, "hdmi");
 	if (IS_ERR(vc4_hdmi->hsm_clock)) {
-		DRM_ERROR("Failed to get HDMI state machine clock\n");
+		drm_err(drm, "Failed to get HDMI state machine clock\n");
 		return PTR_ERR(vc4_hdmi->hsm_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");
+		drm_err(drm, "Failed to get pixel bvb clock\n");
 		return PTR_ERR(vc4_hdmi->pixel_bvb_clock);
 	}
 
 	vc4_hdmi->audio_clock = devm_clk_get(dev, "audio");
 	if (IS_ERR(vc4_hdmi->audio_clock)) {
-		DRM_ERROR("Failed to get audio clock\n");
+		drm_err(drm, "Failed to get audio clock\n");
 		return PTR_ERR(vc4_hdmi->audio_clock);
 	}
 
 	vc4_hdmi->cec_clock = devm_clk_get(dev, "cec");
 	if (IS_ERR(vc4_hdmi->cec_clock)) {
-		DRM_ERROR("Failed to get CEC clock\n");
+		drm_err(drm, "Failed to get CEC clock\n");
 		return PTR_ERR(vc4_hdmi->cec_clock);
 	}
 
 	vc4_hdmi->reset = devm_reset_control_get(dev, NULL);
 	if (IS_ERR(vc4_hdmi->reset)) {
-		DRM_ERROR("Failed to get HDMI reset line\n");
+		drm_err(drm, "Failed to get HDMI reset line\n");
 		return PTR_ERR(vc4_hdmi->reset);
 	}
 
@@ -3215,14 +3221,14 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 
 	ddc_node = of_parse_phandle(dev->of_node, "ddc", 0);
 	if (!ddc_node) {
-		DRM_ERROR("Failed to find ddc node in device tree\n");
+		drm_err(drm, "Failed to find ddc node in device tree\n");
 		return -ENODEV;
 	}
 
 	vc4_hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
 	of_node_put(ddc_node);
 	if (!vc4_hdmi->ddc) {
-		DRM_DEBUG("Failed to get ddc i2c adapter by node\n");
+		drm_err(drm, "Failed to get ddc i2c adapter by node\n");
 		return -EPROBE_DEFER;
 	}
 
diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c
index 04af672caacb..2a835a5cff9d 100644
--- a/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -191,8 +191,8 @@ static int vc4_hvs_upload_linear_kernel(struct vc4_hvs *hvs,
 
 	ret = drm_mm_insert_node(&hvs->dlist_mm, space, VC4_KERNEL_DWORDS);
 	if (ret) {
-		DRM_ERROR("Failed to allocate space for filter kernel: %d\n",
-			  ret);
+		drm_err(&hvs->vc4->base, "Failed to allocate space for filter kernel: %d\n",
+			ret);
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/vc4/vc4_irq.c b/drivers/gpu/drm/vc4/vc4_irq.c
index 563b3dfeb9b9..ef93d8e22a35 100644
--- a/drivers/gpu/drm/vc4/vc4_irq.c
+++ b/drivers/gpu/drm/vc4/vc4_irq.c
@@ -76,7 +76,7 @@ vc4_overflow_mem_work(struct work_struct *work)
 
 	bin_bo_slot = vc4_v3d_get_bin_slot(vc4);
 	if (bin_bo_slot < 0) {
-		DRM_ERROR("Couldn't allocate binner overflow mem\n");
+		drm_err(&vc4->base, "Couldn't allocate binner overflow mem\n");
 		goto complete;
 	}
 
diff --git a/drivers/gpu/drm/vc4/vc4_v3d.c b/drivers/gpu/drm/vc4/vc4_v3d.c
index 04ac7805e6d5..bf5c4e36c94e 100644
--- a/drivers/gpu/drm/vc4/vc4_v3d.c
+++ b/drivers/gpu/drm/vc4/vc4_v3d.c
@@ -441,21 +441,9 @@ static int vc4_v3d_bind(struct device *dev, struct device *master, void *data)
 	vc4->v3d = v3d;
 	v3d->vc4 = vc4;
 
-	v3d->clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(v3d->clk)) {
-		int ret = PTR_ERR(v3d->clk);
-
-		if (ret == -ENOENT) {
-			/* bcm2835 didn't have a clock reference in the DT. */
-			ret = 0;
-			v3d->clk = NULL;
-		} else {
-			if (ret != -EPROBE_DEFER)
-				dev_err(dev, "Failed to get V3D clock: %d\n",
-					ret);
-			return ret;
-		}
-	}
+	v3d->clk = devm_clk_get_optional(dev, NULL);
+	if (IS_ERR(v3d->clk))
+		return dev_err_probe(dev, PTR_ERR(v3d->clk), "Failed to get V3D clock\n");
 
 	ret = platform_get_irq(pdev, 0);
 	if (ret < 0)
@@ -471,8 +459,8 @@ static int vc4_v3d_bind(struct device *dev, struct device *master, void *data)
 		return ret;
 
 	if (V3D_READ(V3D_IDENT0) != V3D_EXPECTED_IDENT0) {
-		DRM_ERROR("V3D_IDENT0 read 0x%08x instead of 0x%08x\n",
-			  V3D_READ(V3D_IDENT0), V3D_EXPECTED_IDENT0);
+		drm_err(drm, "V3D_IDENT0 read 0x%08x instead of 0x%08x\n",
+			V3D_READ(V3D_IDENT0), V3D_EXPECTED_IDENT0);
 		ret = -EINVAL;
 		goto err_put_runtime_pm;
 	}
@@ -485,7 +473,7 @@ static int vc4_v3d_bind(struct device *dev, struct device *master, void *data)
 
 	ret = vc4_irq_install(drm, vc4->irq);
 	if (ret) {
-		DRM_ERROR("Failed to install IRQ handler\n");
+		drm_err(drm, "Failed to install IRQ handler\n");
 		goto err_put_runtime_pm;
 	}
 
diff --git a/drivers/gpu/drm/vc4/vc4_validate.c b/drivers/gpu/drm/vc4/vc4_validate.c
index 7dff3ca5af6b..0c17284bf6f5 100644
--- a/drivers/gpu/drm/vc4/vc4_validate.c
+++ b/drivers/gpu/drm/vc4/vc4_validate.c
@@ -65,7 +65,7 @@ utile_width(int cpp)
 	case 8:
 		return 2;
 	default:
-		DRM_ERROR("unknown cpp: %d\n", cpp);
+		pr_err("unknown cpp: %d\n", cpp);
 		return 1;
 	}
 }
@@ -82,7 +82,7 @@ utile_height(int cpp)
 	case 8:
 		return 4;
 	default:
-		DRM_ERROR("unknown cpp: %d\n", cpp);
+		pr_err("unknown cpp: %d\n", cpp);
 		return 1;
 	}
 }
@@ -390,8 +390,8 @@ validate_tile_binning_config(VALIDATE_ARGS)
 	bin_slot = vc4_v3d_get_bin_slot(vc4);
 	if (bin_slot < 0) {
 		if (bin_slot != -EINTR && bin_slot != -ERESTARTSYS) {
-			DRM_ERROR("Failed to allocate binner memory: %d\n",
-				  bin_slot);
+			drm_err(dev, "Failed to allocate binner memory: %d\n",
+				bin_slot);
 		}
 		return bin_slot;
 	}
diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c
index 070813b8aff8..eb64e881051e 100644
--- a/drivers/gpu/drm/vc4/vc4_vec.c
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
@@ -557,7 +557,7 @@ static void vc4_vec_encoder_disable(struct drm_encoder *encoder,
 
 	ret = pm_runtime_put(&vec->pdev->dev);
 	if (ret < 0) {
-		DRM_ERROR("Failed to release power domain: %d\n", ret);
+		drm_err(drm, "Failed to release power domain: %d\n", ret);
 		goto err_dev_exit;
 	}
 
@@ -591,7 +591,7 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder,
 
 	ret = pm_runtime_resume_and_get(&vec->pdev->dev);
 	if (ret < 0) {
-		DRM_ERROR("Failed to retain power domain: %d\n", ret);
+		drm_err(drm, "Failed to retain power domain: %d\n", ret);
 		goto err_dev_exit;
 	}
 
@@ -604,13 +604,13 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder,
 	 */
 	ret = clk_set_rate(vec->clock, 108000000);
 	if (ret) {
-		DRM_ERROR("Failed to set clock rate: %d\n", ret);
+		drm_err(drm, "Failed to set clock rate: %d\n", ret);
 		goto err_put_runtime_pm;
 	}
 
 	ret = clk_prepare_enable(vec->clock);
 	if (ret) {
-		DRM_ERROR("Failed to turn on core clock: %d\n", ret);
+		drm_err(drm, "Failed to turn on core clock: %d\n", ret);
 		goto err_put_runtime_pm;
 	}
 
@@ -806,7 +806,7 @@ static int vc4_vec_bind(struct device *dev, struct device *master, void *data)
 	if (IS_ERR(vec->clock)) {
 		ret = PTR_ERR(vec->clock);
 		if (ret != -EPROBE_DEFER)
-			DRM_ERROR("Failed to get clock: %d\n", ret);
+			drm_err(drm, "Failed to get clock: %d\n", ret);
 		return ret;
 	}
 
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index b78aae45cae7..f725f8654611 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -375,6 +375,8 @@ void mipi_dsi_dcs_set_column_address_multi(struct mipi_dsi_multi_context *ctx,
 					   u16 start, u16 end);
 void mipi_dsi_dcs_set_page_address_multi(struct mipi_dsi_multi_context *ctx,
 					 u16 start, u16 end);
+void mipi_dsi_dcs_set_tear_scanline_multi(struct mipi_dsi_multi_context *ctx,
+					  u16 scanline);
 
 /**
  * mipi_dsi_generic_write_seq - transmit data using a generic write packet
diff --git a/include/linux/string.h b/include/linux/string.h
index 9edace076ddb..5855c5626b4b 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -279,6 +279,18 @@ static inline void memcpy_flushcache(void *dst, const void *src, size_t cnt)
 void *memchr_inv(const void *s, int c, size_t n);
 char *strreplace(char *str, char old, char new);
 
+/**
+ * mem_is_zero - Check if an area of memory is all 0's.
+ * @s: The memory area
+ * @n: The size of the area
+ *
+ * Return: True if the area of memory is all 0's.
+ */
+static inline bool mem_is_zero(const void *s, size_t n)
+{
+	return !memchr_inv(s, 0, n);
+}
+
 extern void kfree_const(const void *x);
 
 extern char *kstrdup(const char *s, gfp_t gfp) __malloc;