From c3ee8c65f63799b02e1fb828bac99fd5008fb565 Mon Sep 17 00:00:00 2001
From: Bernard Zhao <bernard@vivo.com>
Date: Sat, 1 Aug 2020 20:02:13 +0800
Subject: drm/panel: remove return value of function drm_panel_add

The function "int drm_panel_add(struct drm_panel *panel)"
always returns 0, this return value is meaningless.
Also, there is no need to check return value which calls
"drm_panel_add and", error branch code will never run.

Signed-off-by: Bernard Zhao <bernard@vivo.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200801120216.8488-1-bernard@vivo.com
---
 drivers/gpu/drm/panel/panel-innolux-p079zca.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'drivers/gpu/drm/panel/panel-innolux-p079zca.c')

diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index fdf030f4cf92..1a8e69c64125 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -475,9 +475,7 @@ static int innolux_panel_add(struct mipi_dsi_device *dsi,
 	if (err)
 		return err;
 
-	err = drm_panel_add(&innolux->base);
-	if (err < 0)
-		return err;
+	drm_panel_add(&innolux->base);
 
 	mipi_dsi_set_drvdata(dsi, innolux);
 	innolux->link = dsi;
-- 
cgit 


From a25b6b273f7039da72e41f78dc6e9d64b4592e68 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Sat, 15 Aug 2020 14:54:06 +0200
Subject: drm/panel: Use dev_ based logging
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Standardize on the dev_ based logging and drop the include of drm_print.h.
Fix a few cases where "x@" was used when printing the mode.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Cc: Jerry Han <hanxu5@huaqin.corp-partner.google.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Icenowy Zheng <icenowy@aosc.io>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Guido Günther <agx@sigxcpu.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200815125406.1153224-6-sam@ravnborg.org
---
 drivers/gpu/drm/panel/panel-boe-himax8279d.c       | 44 ++++--------
 drivers/gpu/drm/panel/panel-elida-kd35t133.c       | 51 +++++---------
 drivers/gpu/drm/panel/panel-feixin-k101-im2ba02.c  | 19 +++--
 .../gpu/drm/panel/panel-feiyang-fy07024di26a30d.c  | 21 +++---
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c       |  3 +-
 drivers/gpu/drm/panel/panel-innolux-p079zca.c      | 31 +++------
 drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c | 33 ++++-----
 drivers/gpu/drm/panel/panel-novatek-nt35510.c      | 40 ++++-------
 drivers/gpu/drm/panel/panel-orisetech-otm8009a.c   | 13 ++--
 drivers/gpu/drm/panel/panel-ronbo-rb070d30.c       | 16 ++---
 drivers/gpu/drm/panel/panel-sony-acx424akp.c       | 81 ++++++++--------------
 drivers/gpu/drm/panel/panel-tpo-tpg110.c           | 38 +++++-----
 drivers/gpu/drm/panel/panel-truly-nt35597.c        | 63 ++++++-----------
 drivers/gpu/drm/panel/panel-visionox-rm69299.c     | 41 ++++-------
 drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c   | 51 +++++---------
 15 files changed, 200 insertions(+), 345 deletions(-)

(limited to 'drivers/gpu/drm/panel/panel-innolux-p079zca.c')

diff --git a/drivers/gpu/drm/panel/panel-boe-himax8279d.c b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
index d676b4c2a8fa..42854bd37fd5 100644
--- a/drivers/gpu/drm/panel/panel-boe-himax8279d.c
+++ b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
@@ -19,7 +19,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 #include <video/mipi_display.h>
 
@@ -93,8 +92,7 @@ static int boe_panel_disable(struct drm_panel *panel)
 
 	err = mipi_dsi_dcs_set_display_off(pinfo->link);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to set display off: %d\n", err);
 		return err;
 	}
 
@@ -113,13 +111,11 @@ static int boe_panel_unprepare(struct drm_panel *panel)
 
 	err = mipi_dsi_dcs_set_display_off(pinfo->link);
 	if (err < 0)
-		DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to set display off: %d\n", err);
 
 	err = mipi_dsi_dcs_enter_sleep_mode(pinfo->link);
 	if (err < 0)
-		DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
 
 	/* sleep_mode_delay: 1ms - 2ms */
 	usleep_range(1000, 2000);
@@ -163,15 +159,13 @@ static int boe_panel_prepare(struct drm_panel *panel)
 	/* send init code */
 	err = send_mipi_cmds(panel, pinfo->desc->on_cmds);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to send DCS Init Code: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to send DCS Init Code: %d\n", err);
 		goto poweroff;
 	}
 
 	err = mipi_dsi_dcs_exit_sleep_mode(pinfo->link);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to exit sleep mode: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
 		goto poweroff;
 	}
 
@@ -180,8 +174,7 @@ static int boe_panel_prepare(struct drm_panel *panel)
 
 	err = mipi_dsi_dcs_set_display_on(pinfo->link);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to set display on: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to set display on: %d\n", err);
 		goto poweroff;
 	}
 
@@ -209,8 +202,7 @@ static int boe_panel_enable(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_set_display_on(pinfo->link);
 	if (ret < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to set display on: %d\n",
-			      ret);
+		dev_err(panel->dev, "failed to set display on: %d\n", ret);
 		return ret;
 	}
 
@@ -228,8 +220,8 @@ static int boe_panel_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, m);
 	if (!mode) {
-		DRM_DEV_ERROR(pinfo->base.dev, "failed to add mode %ux%u@%u\n",
-			      m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
+		dev_err(pinfo->base.dev, "failed to add mode %ux%u@%u\n",
+			m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
 		return -ENOMEM;
 	}
 
@@ -865,8 +857,7 @@ static int panel_add(struct panel_info *pinfo)
 	if (IS_ERR(pinfo->pp18_gpio)) {
 		ret = PTR_ERR(pinfo->pp18_gpio);
 		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "failed to get pp18 gpio: %d\n",
-				      ret);
+			dev_err(dev, "failed to get pp18 gpio: %d\n", ret);
 		return ret;
 	}
 
@@ -874,8 +865,7 @@ static int panel_add(struct panel_info *pinfo)
 	if (IS_ERR(pinfo->pp33_gpio)) {
 		ret = PTR_ERR(pinfo->pp33_gpio);
 		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "failed to get pp33 gpio: %d\n",
-				      ret);
+			dev_err(dev, "failed to get pp33 gpio: %d\n", ret);
 		return ret;
 	}
 
@@ -883,8 +873,7 @@ static int panel_add(struct panel_info *pinfo)
 	if (IS_ERR(pinfo->enable_gpio)) {
 		ret = PTR_ERR(pinfo->enable_gpio);
 		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "failed to get enable gpio: %d\n",
-				      ret);
+			dev_err(dev, "failed to get enable gpio: %d\n", ret);
 		return ret;
 	}
 
@@ -937,18 +926,15 @@ static int panel_remove(struct mipi_dsi_device *dsi)
 
 	err = boe_panel_disable(&pinfo->base);
 	if (err < 0)
-		DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n",
-			      err);
+		dev_err(&dsi->dev, "failed to disable panel: %d\n", err);
 
 	err = boe_panel_unprepare(&pinfo->base);
 	if (err < 0)
-		DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n",
-			      err);
+		dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err);
 
 	err = mipi_dsi_detach(dsi);
 	if (err < 0)
-		DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n",
-			      err);
+		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
 
 	drm_panel_remove(&pinfo->base);
 
diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
index e9675514d77b..bc36aa3c1123 100644
--- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
+++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
@@ -22,7 +22,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 /* Manufacturer specific Commands send via DSI */
 #define KD35T133_CMD_INTERFACEMODECTRL		0xb0
@@ -89,7 +88,7 @@ static int kd35t133_init_sequence(struct kd35t133 *ctx)
 			  0xa9, 0x51, 0x2c, 0x82);
 	mipi_dsi_dcs_write(dsi, MIPI_DCS_ENTER_INVERT_MODE, NULL, 0);
 
-	DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
+	dev_dbg(dev, "Panel init sequence done\n");
 	return 0;
 }
 
@@ -104,13 +103,11 @@ static int kd35t133_unprepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_set_display_off(dsi);
 	if (ret < 0)
-		DRM_DEV_ERROR(ctx->dev, "failed to set display off: %d\n",
-			      ret);
+		dev_err(ctx->dev, "failed to set display off: %d\n", ret);
 
 	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev, "failed to enter sleep mode: %d\n",
-			      ret);
+		dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret);
 		return ret;
 	}
 
@@ -131,18 +128,16 @@ static int kd35t133_prepare(struct drm_panel *panel)
 	if (ctx->prepared)
 		return 0;
 
-	DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");
+	dev_dbg(ctx->dev, "Resetting the panel\n");
 	ret = regulator_enable(ctx->vdd);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev,
-			      "Failed to enable vdd supply: %d\n", ret);
+		dev_err(ctx->dev, "Failed to enable vdd supply: %d\n", ret);
 		return ret;
 	}
 
 	ret = regulator_enable(ctx->iovcc);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev,
-			      "Failed to enable iovcc supply: %d\n", ret);
+		dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);
 		goto disable_vdd;
 	}
 
@@ -156,7 +151,7 @@ static int kd35t133_prepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
+		dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
 		goto disable_iovcc;
 	}
 
@@ -164,14 +159,13 @@ static int kd35t133_prepare(struct drm_panel *panel)
 
 	ret = kd35t133_init_sequence(ctx);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
-			      ret);
+		dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
 		goto disable_iovcc;
 	}
 
 	ret = mipi_dsi_dcs_set_display_on(dsi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev, "Failed to set display on: %d\n", ret);
+		dev_err(ctx->dev, "Failed to set display on: %d\n", ret);
 		goto disable_iovcc;
 	}
 
@@ -210,9 +204,9 @@ static int kd35t133_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, &default_mode);
 	if (!mode) {
-		DRM_DEV_ERROR(ctx->dev, "Failed to add mode %ux%u@%u\n",
-			      default_mode.hdisplay, default_mode.vdisplay,
-			      drm_mode_vrefresh(&default_mode));
+		dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
+			default_mode.hdisplay, default_mode.vdisplay,
+			drm_mode_vrefresh(&default_mode));
 		return -ENOMEM;
 	}
 
@@ -244,7 +238,7 @@ static int kd35t133_probe(struct mipi_dsi_device *dsi)
 
 	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->reset_gpio)) {
-		DRM_DEV_ERROR(dev, "cannot get reset gpio\n");
+		dev_err(dev, "cannot get reset gpio\n");
 		return PTR_ERR(ctx->reset_gpio);
 	}
 
@@ -252,9 +246,7 @@ static int kd35t133_probe(struct mipi_dsi_device *dsi)
 	if (IS_ERR(ctx->vdd)) {
 		ret = PTR_ERR(ctx->vdd);
 		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev,
-				      "Failed to request vdd regulator: %d\n",
-				      ret);
+			dev_err(dev, "Failed to request vdd regulator: %d\n", ret);
 		return ret;
 	}
 
@@ -262,9 +254,7 @@ static int kd35t133_probe(struct mipi_dsi_device *dsi)
 	if (IS_ERR(ctx->iovcc)) {
 		ret = PTR_ERR(ctx->iovcc);
 		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev,
-				      "Failed to request iovcc regulator: %d\n",
-				      ret);
+			dev_err(dev, "Failed to request iovcc regulator: %d\n", ret);
 		return ret;
 	}
 
@@ -288,7 +278,7 @@ static int kd35t133_probe(struct mipi_dsi_device *dsi)
 
 	ret = mipi_dsi_attach(dsi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(dev, "mipi_dsi_attach failed: %d\n", ret);
+		dev_err(dev, "mipi_dsi_attach failed: %d\n", ret);
 		drm_panel_remove(&ctx->panel);
 		return ret;
 	}
@@ -303,13 +293,11 @@ static void kd35t133_shutdown(struct mipi_dsi_device *dsi)
 
 	ret = drm_panel_unprepare(&ctx->panel);
 	if (ret < 0)
-		DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",
-			      ret);
+		dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret);
 
 	ret = drm_panel_disable(&ctx->panel);
 	if (ret < 0)
-		DRM_DEV_ERROR(&dsi->dev, "Failed to disable panel: %d\n",
-			      ret);
+		dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret);
 }
 
 static int kd35t133_remove(struct mipi_dsi_device *dsi)
@@ -321,8 +309,7 @@ static int kd35t133_remove(struct mipi_dsi_device *dsi)
 
 	ret = mipi_dsi_detach(dsi);
 	if (ret < 0)
-		DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",
-			      ret);
+		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
 
 	drm_panel_remove(&ctx->panel);
 
diff --git a/drivers/gpu/drm/panel/panel-feixin-k101-im2ba02.c b/drivers/gpu/drm/panel/panel-feixin-k101-im2ba02.c
index 0b7e82e5ba4e..2a602aee61c3 100644
--- a/drivers/gpu/drm/panel/panel-feixin-k101-im2ba02.c
+++ b/drivers/gpu/drm/panel/panel-feixin-k101-im2ba02.c
@@ -13,7 +13,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 #define K101_IM2BA02_INIT_CMD_LEN	2
 
@@ -374,13 +373,11 @@ static int k101_im2ba02_unprepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_set_display_off(ctx->dsi);
 	if (ret < 0)
-		DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
-			      ret);
+		dev_err(panel->dev, "failed to set display off: %d\n", ret);
 
 	ret = mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
 	if (ret < 0)
-		DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
-			      ret);
+		dev_err(panel->dev, "failed to enter sleep mode: %d\n", ret);
 
 	msleep(200);
 
@@ -416,10 +413,10 @@ static int k101_im2ba02_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, &k101_im2ba02_default_mode);
 	if (!mode) {
-		DRM_DEV_ERROR(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",
-			      k101_im2ba02_default_mode.hdisplay,
-			      k101_im2ba02_default_mode.vdisplay,
-			      drm_mode_vrefresh(&k101_im2ba02_default_mode));
+		dev_err(&ctx->dsi->dev, "failed to add mode %ux%u@%u\n",
+			k101_im2ba02_default_mode.hdisplay,
+			k101_im2ba02_default_mode.vdisplay,
+			drm_mode_vrefresh(&k101_im2ba02_default_mode));
 		return -ENOMEM;
 	}
 
@@ -460,13 +457,13 @@ static int k101_im2ba02_dsi_probe(struct mipi_dsi_device *dsi)
 	ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies),
 				      ctx->supplies);
 	if (ret < 0) {
-		DRM_DEV_ERROR(&dsi->dev, "Couldn't get regulators\n");
+		dev_err(&dsi->dev, "Couldn't get regulators\n");
 		return ret;
 	}
 
 	ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->reset)) {
-		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our reset GPIO\n");
+		dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
 		return PTR_ERR(ctx->reset);
 	}
 
diff --git a/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c b/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
index f9edee69fea4..581661b506f8 100644
--- a/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
+++ b/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
@@ -7,7 +7,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 #include <linux/gpio/consumer.h>
 #include <linux/delay.h>
@@ -118,13 +117,11 @@ static int feiyang_unprepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_set_display_off(ctx->dsi);
 	if (ret < 0)
-		DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
-			      ret);
+		dev_err(panel->dev, "failed to set display off: %d\n", ret);
 
 	ret = mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
 	if (ret < 0)
-		DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
-			      ret);
+		dev_err(panel->dev, "failed to enter sleep mode: %d\n", ret);
 
 	/* T13 (backlight fall + video & logic signal fall) T13 >= 200ms */
 	msleep(200);
@@ -165,10 +162,10 @@ static int feiyang_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, &feiyang_default_mode);
 	if (!mode) {
-		DRM_DEV_ERROR(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",
-			      feiyang_default_mode.hdisplay,
-			      feiyang_default_mode.vdisplay,
-			      drm_mode_vrefresh(&feiyang_default_mode));
+		dev_err(&ctx->dsi->dev, "failed to add mode %ux%u@%u\n",
+			feiyang_default_mode.hdisplay,
+			feiyang_default_mode.vdisplay,
+			drm_mode_vrefresh(&feiyang_default_mode));
 		return -ENOMEM;
 	}
 
@@ -204,19 +201,19 @@ static int feiyang_dsi_probe(struct mipi_dsi_device *dsi)
 
 	ctx->dvdd = devm_regulator_get(&dsi->dev, "dvdd");
 	if (IS_ERR(ctx->dvdd)) {
-		DRM_DEV_ERROR(&dsi->dev, "Couldn't get dvdd regulator\n");
+		dev_err(&dsi->dev, "Couldn't get dvdd regulator\n");
 		return PTR_ERR(ctx->dvdd);
 	}
 
 	ctx->avdd = devm_regulator_get(&dsi->dev, "avdd");
 	if (IS_ERR(ctx->avdd)) {
-		DRM_DEV_ERROR(&dsi->dev, "Couldn't get avdd regulator\n");
+		dev_err(&dsi->dev, "Couldn't get avdd regulator\n");
 		return PTR_ERR(ctx->avdd);
 	}
 
 	ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->reset)) {
-		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our reset GPIO\n");
+		dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
 		return PTR_ERR(ctx->reset);
 	}
 
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
index 968845894725..074e18559b9f 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
@@ -33,7 +33,6 @@
 
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 #define ILI9322_CHIP_ID			0x00
 #define ILI9322_CHIP_ID_MAGIC		0x96
@@ -683,7 +682,7 @@ static int ili9322_get_modes(struct drm_panel *panel,
 		break;
 	}
 	if (!mode) {
-		DRM_ERROR("bad mode or failed to add mode\n");
+		dev_err(panel->dev, "bad mode or failed to add mode\n");
 		return -EINVAL;
 	}
 	drm_mode_set_name(mode);
diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index 1a8e69c64125..aea316225391 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -17,7 +17,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 struct panel_init_cmd {
 	size_t len;
@@ -85,13 +84,11 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
 
 	err = mipi_dsi_dcs_set_display_off(innolux->link);
 	if (err < 0)
-		DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to set display off: %d\n", err);
 
 	err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
 		return err;
 	}
 
@@ -147,8 +144,7 @@ static int innolux_panel_prepare(struct drm_panel *panel)
 			err = mipi_dsi_generic_write(innolux->link, cmd->data,
 						     cmd->len);
 			if (err < 0) {
-				dev_err(panel->dev,
-					"failed to write command %u\n", i);
+				dev_err(panel->dev, "failed to write command %u\n", i);
 				goto poweroff;
 			}
 
@@ -159,8 +155,7 @@ static int innolux_panel_prepare(struct drm_panel *panel)
 			 */
 			err = mipi_dsi_dcs_nop(innolux->link);
 			if (err < 0) {
-				dev_err(panel->dev,
-					"failed to send DCS nop: %d\n", err);
+				dev_err(panel->dev, "failed to send DCS nop: %d\n", err);
 				goto poweroff;
 			}
 		}
@@ -168,8 +163,7 @@ static int innolux_panel_prepare(struct drm_panel *panel)
 
 	err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to exit sleep mode: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
 		goto poweroff;
 	}
 
@@ -178,8 +172,7 @@ static int innolux_panel_prepare(struct drm_panel *panel)
 
 	err = mipi_dsi_dcs_set_display_on(innolux->link);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to set display on: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to set display on: %d\n", err);
 		goto poweroff;
 	}
 
@@ -398,8 +391,8 @@ static int innolux_panel_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, m);
 	if (!mode) {
-		DRM_DEV_ERROR(panel->dev, "failed to add mode %ux%ux@%u\n",
-			      m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
+		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
+			m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
 		return -ENOMEM;
 	}
 
@@ -512,17 +505,15 @@ static int innolux_panel_remove(struct mipi_dsi_device *dsi)
 
 	err = drm_panel_unprepare(&innolux->base);
 	if (err < 0)
-		DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n",
-			      err);
+		dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err);
 
 	err = drm_panel_disable(&innolux->base);
 	if (err < 0)
-		DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n", err);
+		dev_err(&dsi->dev, "failed to disable panel: %d\n", err);
 
 	err = mipi_dsi_detach(dsi);
 	if (err < 0)
-		DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n",
-			      err);
+		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
 
 	innolux_panel_del(innolux);
 
diff --git a/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c b/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
index f42dc2ceeb07..86e4213e8bb1 100644
--- a/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
+++ b/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
@@ -16,7 +16,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 struct kingdisplay_panel {
 	struct drm_panel base;
@@ -191,8 +190,7 @@ static int kingdisplay_panel_disable(struct drm_panel *panel)
 
 	err = mipi_dsi_dcs_set_display_off(kingdisplay->link);
 	if (err < 0)
-		DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to set display off: %d\n", err);
 
 	kingdisplay->enabled = false;
 
@@ -209,8 +207,7 @@ static int kingdisplay_panel_unprepare(struct drm_panel *panel)
 
 	err = mipi_dsi_dcs_enter_sleep_mode(kingdisplay->link);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
 		return err;
 	}
 
@@ -255,16 +252,14 @@ static int kingdisplay_panel_prepare(struct drm_panel *panel)
 		err = mipi_dsi_generic_write(kingdisplay->link, &init_code[i],
 					sizeof(struct kingdisplay_panel_cmd));
 		if (err < 0) {
-			DRM_DEV_ERROR(panel->dev, "failed write init cmds: %d\n",
-				      err);
+			dev_err(panel->dev, "failed write init cmds: %d\n", err);
 			goto poweroff;
 		}
 	}
 
 	err = mipi_dsi_dcs_exit_sleep_mode(kingdisplay->link);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to exit sleep mode: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
 		goto poweroff;
 	}
 
@@ -273,8 +268,7 @@ static int kingdisplay_panel_prepare(struct drm_panel *panel)
 
 	err = mipi_dsi_dcs_set_display_on(kingdisplay->link);
 	if (err < 0) {
-		DRM_DEV_ERROR(panel->dev, "failed to set display on: %d\n",
-			      err);
+		dev_err(panel->dev, "failed to set display on: %d\n", err);
 		goto poweroff;
 	}
 
@@ -290,8 +284,7 @@ poweroff:
 
 	regulator_err = regulator_disable(kingdisplay->supply);
 	if (regulator_err)
-		DRM_DEV_ERROR(panel->dev, "failed to disable regulator: %d\n",
-			      regulator_err);
+		dev_err(panel->dev, "failed to disable regulator: %d\n", regulator_err);
 
 	return err;
 }
@@ -327,9 +320,9 @@ static int kingdisplay_panel_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, &default_mode);
 	if (!mode) {
-		DRM_DEV_ERROR(panel->dev, "failed to add mode %ux%ux@%u\n",
-			      default_mode.hdisplay, default_mode.vdisplay,
-			      drm_mode_vrefresh(&default_mode));
+		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
+			default_mode.hdisplay, default_mode.vdisplay,
+			drm_mode_vrefresh(&default_mode));
 		return -ENOMEM;
 	}
 
@@ -423,17 +416,15 @@ static int kingdisplay_panel_remove(struct mipi_dsi_device *dsi)
 
 	err = drm_panel_unprepare(&kingdisplay->base);
 	if (err < 0)
-		DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n",
-			      err);
+		dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err);
 
 	err = drm_panel_disable(&kingdisplay->base);
 	if (err < 0)
-		DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n", err);
+		dev_err(&dsi->dev, "failed to disable panel: %d\n", err);
 
 	err = mipi_dsi_detach(dsi);
 	if (err < 0)
-		DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n",
-			      err);
+		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
 
 	kingdisplay_panel_del(kingdisplay);
 
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt35510.c b/drivers/gpu/drm/panel/panel-novatek-nt35510.c
index 64c8cf2bae7c..b9a0e56f33e2 100644
--- a/drivers/gpu/drm/panel/panel-novatek-nt35510.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt35510.c
@@ -35,7 +35,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 #define MCS_CMD_MAUCCTR		0xF0 /* Manufacturer command enable */
 #define MCS_CMD_READ_ID1	0xDA
@@ -404,9 +403,7 @@ static int nt35510_send_long(struct nt35510 *nt, struct mipi_dsi_device *dsi,
 		chunk = 15;
 	ret = mipi_dsi_dcs_write(dsi, cmd, seqp, chunk);
 	if (ret < 0) {
-		DRM_DEV_ERROR(nt->dev,
-			      "error sending DCS command seq cmd %02x\n",
-			      cmd);
+		dev_err(nt->dev, "error sending DCS command seq cmd %02x\n", cmd);
 		return ret;
 	}
 	cmdwritten += chunk;
@@ -418,16 +415,13 @@ static int nt35510_send_long(struct nt35510 *nt, struct mipi_dsi_device *dsi,
 			chunk = 15;
 		ret = mipi_dsi_generic_write(dsi, seqp, chunk);
 		if (ret < 0) {
-			DRM_DEV_ERROR(nt->dev,
-				      "error sending generic write seq %02x\n",
-				      cmd);
+			dev_err(nt->dev, "error sending generic write seq %02x\n", cmd);
 			return ret;
 		}
 		cmdwritten += chunk;
 		seqp += chunk;
 	}
-	DRM_DEV_DEBUG(nt->dev, "sent command %02x %02x bytes\n",
-		      cmd, cmdlen);
+	dev_dbg(nt->dev, "sent command %02x %02x bytes\n", cmd, cmdlen);
 	return 0;
 }
 
@@ -439,17 +433,17 @@ static int nt35510_read_id(struct nt35510 *nt)
 
 	ret = mipi_dsi_dcs_read(dsi, MCS_CMD_READ_ID1, &id1, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(nt->dev, "could not read MTP ID1\n");
+		dev_err(nt->dev, "could not read MTP ID1\n");
 		return ret;
 	}
 	ret = mipi_dsi_dcs_read(dsi, MCS_CMD_READ_ID2, &id2, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(nt->dev, "could not read MTP ID2\n");
+		dev_err(nt->dev, "could not read MTP ID2\n");
 		return ret;
 	}
 	ret = mipi_dsi_dcs_read(dsi, MCS_CMD_READ_ID3, &id3, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(nt->dev, "could not read MTP ID3\n");
+		dev_err(nt->dev, "could not read MTP ID3\n");
 		return ret;
 	}
 
@@ -458,9 +452,7 @@ static int nt35510_read_id(struct nt35510 *nt)
 	 * ID (e.g. Hydis 0x55), driver ID (e.g. NT35510 0xc0) and
 	 * version.
 	 */
-	DRM_DEV_INFO(nt->dev,
-		     "MTP ID manufacturer: %02x version: %02x driver: %02x\n",
-		     id1, id2, id3);
+	dev_info(nt->dev, "MTP ID manufacturer: %02x version: %02x driver: %02x\n", id1, id2, id3);
 
 	return 0;
 }
@@ -661,7 +653,7 @@ static int nt35510_set_brightness(struct backlight_device *bl)
 	u8 brightness = bl->props.brightness;
 	int ret;
 
-	DRM_DEV_DEBUG(nt->dev, "set brightness %d\n", brightness);
+	dev_dbg(nt->dev, "set brightness %d\n", brightness);
 	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
 				 &brightness,
 				 sizeof(brightness));
@@ -796,8 +788,7 @@ static int nt35510_unprepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_set_display_off(dsi);
 	if (ret) {
-		DRM_DEV_ERROR(nt->dev, "failed to turn display off (%d)\n",
-			      ret);
+		dev_err(nt->dev, "failed to turn display off (%d)\n", ret);
 		return ret;
 	}
 	usleep_range(10000, 20000);
@@ -805,8 +796,7 @@ static int nt35510_unprepare(struct drm_panel *panel)
 	/* Enter sleep mode */
 	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
 	if (ret) {
-		DRM_DEV_ERROR(nt->dev, "failed to enter sleep mode (%d)\n",
-			      ret);
+		dev_err(nt->dev, "failed to enter sleep mode (%d)\n", ret);
 		return ret;
 	}
 
@@ -833,8 +823,7 @@ static int nt35510_prepare(struct drm_panel *panel)
 	/* Exit sleep mode */
 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
 	if (ret) {
-		DRM_DEV_ERROR(nt->dev, "failed to exit sleep mode (%d)\n",
-			      ret);
+		dev_err(nt->dev, "failed to exit sleep mode (%d)\n", ret);
 		return ret;
 	}
 	/* Up to 120 ms */
@@ -842,8 +831,7 @@ static int nt35510_prepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_set_display_on(dsi);
 	if (ret) {
-		DRM_DEV_ERROR(nt->dev, "failed to turn display on (%d)\n",
-			      ret);
+		dev_err(nt->dev, "failed to turn display on (%d)\n", ret);
 		return ret;
 	}
 	/* Some 10 ms */
@@ -864,7 +852,7 @@ static int nt35510_get_modes(struct drm_panel *panel,
 	info->height_mm = nt->conf->height_mm;
 	mode = drm_mode_duplicate(connector->dev, &nt->conf->mode);
 	if (!mode) {
-		DRM_ERROR("bad mode or failed to add mode\n");
+		dev_err(panel->dev, "bad mode or failed to add mode\n");
 		return -EINVAL;
 	}
 	drm_mode_set_name(mode);
@@ -963,7 +951,7 @@ static int nt35510_probe(struct mipi_dsi_device *dsi)
 		bl = devm_backlight_device_register(dev, "nt35510", dev, nt,
 						    &nt35510_bl_ops, NULL);
 		if (IS_ERR(bl)) {
-			DRM_DEV_ERROR(dev, "failed to register backlight device\n");
+			dev_err(dev, "failed to register backlight device\n");
 			return PTR_ERR(bl);
 		}
 		bl->props.max_brightness = 255;
diff --git a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
index d956522f32ee..b6e377aa1131 100644
--- a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
+++ b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
@@ -17,7 +17,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 #define OTM8009A_BACKLIGHT_DEFAULT	240
 #define OTM8009A_BACKLIGHT_MAX		255
@@ -97,7 +96,7 @@ static void otm8009a_dcs_write_buf(struct otm8009a *ctx, const void *data,
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 
 	if (mipi_dsi_dcs_write_buffer(dsi, data, len) < 0)
-		DRM_WARN("mipi dsi dcs write buffer failed\n");
+		dev_warn(ctx->dev, "mipi dsi dcs write buffer failed\n");
 }
 
 static void otm8009a_dcs_write_buf_hs(struct otm8009a *ctx, const void *data,
@@ -313,7 +312,7 @@ static int otm8009a_prepare(struct drm_panel *panel)
 
 	ret = regulator_enable(ctx->supply);
 	if (ret < 0) {
-		DRM_ERROR("failed to enable supply: %d\n", ret);
+		dev_err(panel->dev, "failed to enable supply: %d\n", ret);
 		return ret;
 	}
 
@@ -355,9 +354,9 @@ static int otm8009a_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, &default_mode);
 	if (!mode) {
-		DRM_ERROR("failed to add mode %ux%ux@%u\n",
-			  default_mode.hdisplay, default_mode.vdisplay,
-			  drm_mode_vrefresh(&default_mode));
+		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
+			default_mode.hdisplay, default_mode.vdisplay,
+			drm_mode_vrefresh(&default_mode));
 		return -ENOMEM;
 	}
 
@@ -390,7 +389,7 @@ static int otm8009a_backlight_update_status(struct backlight_device *bd)
 	u8 data[2];
 
 	if (!ctx->prepared) {
-		DRM_DEBUG("lcd not ready yet for setting its backlight!\n");
+		dev_dbg(&bd->dev, "lcd not ready yet for setting its backlight!\n");
 		return -ENXIO;
 	}
 
diff --git a/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c b/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c
index ea74958d7544..535c8d1cca21 100644
--- a/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c
+++ b/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c
@@ -23,7 +23,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 struct rb070d30_panel {
 	struct drm_panel panel;
@@ -50,7 +49,7 @@ static int rb070d30_panel_prepare(struct drm_panel *panel)
 
 	ret = regulator_enable(ctx->supply);
 	if (ret < 0) {
-		DRM_DEV_ERROR(&ctx->dsi->dev, "Failed to enable supply: %d\n", ret);
+		dev_err(&ctx->dsi->dev, "Failed to enable supply: %d\n", ret);
 		return ret;
 	}
 
@@ -117,9 +116,8 @@ static int rb070d30_panel_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, &default_mode);
 	if (!mode) {
-		DRM_DEV_ERROR(&ctx->dsi->dev,
-			      "Failed to add mode " DRM_MODE_FMT "\n",
-			      DRM_MODE_ARG(&default_mode));
+		dev_err(&ctx->dsi->dev, "Failed to add mode " DRM_MODE_FMT "\n",
+			DRM_MODE_ARG(&default_mode));
 		return -EINVAL;
 	}
 
@@ -166,13 +164,13 @@ static int rb070d30_panel_dsi_probe(struct mipi_dsi_device *dsi)
 
 	ctx->gpios.reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->gpios.reset)) {
-		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our reset GPIO\n");
+		dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
 		return PTR_ERR(ctx->gpios.reset);
 	}
 
 	ctx->gpios.power = devm_gpiod_get(&dsi->dev, "power", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->gpios.power)) {
-		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our power GPIO\n");
+		dev_err(&dsi->dev, "Couldn't get our power GPIO\n");
 		return PTR_ERR(ctx->gpios.power);
 	}
 
@@ -182,7 +180,7 @@ static int rb070d30_panel_dsi_probe(struct mipi_dsi_device *dsi)
 	 */
 	ctx->gpios.updn = devm_gpiod_get(&dsi->dev, "updn", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->gpios.updn)) {
-		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our updn GPIO\n");
+		dev_err(&dsi->dev, "Couldn't get our updn GPIO\n");
 		return PTR_ERR(ctx->gpios.updn);
 	}
 
@@ -192,7 +190,7 @@ static int rb070d30_panel_dsi_probe(struct mipi_dsi_device *dsi)
 	 */
 	ctx->gpios.shlr = devm_gpiod_get(&dsi->dev, "shlr", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->gpios.shlr)) {
-		DRM_DEV_ERROR(&dsi->dev, "Couldn't get our shlr GPIO\n");
+		dev_err(&dsi->dev, "Couldn't get our shlr GPIO\n");
 		return PTR_ERR(ctx->gpios.shlr);
 	}
 
diff --git a/drivers/gpu/drm/panel/panel-sony-acx424akp.c b/drivers/gpu/drm/panel/panel-sony-acx424akp.c
index 57575c40f2aa..065efae213f5 100644
--- a/drivers/gpu/drm/panel/panel-sony-acx424akp.c
+++ b/drivers/gpu/drm/panel/panel-sony-acx424akp.c
@@ -20,7 +20,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 #define ACX424_DCS_READ_ID1		0xDA
 #define ACX424_DCS_READ_ID2		0xDB
@@ -110,13 +109,11 @@ static int acx424akp_set_brightness(struct backlight_device *bl)
 		      SCALE_FACTOR_NS_DIV_MHZ);
 
 	/* Set up PWM dutycycle ONE byte (differs from the standard) */
-	DRM_DEV_DEBUG(acx->dev, "calculated duty cycle %02x\n", pwm_ratio);
+	dev_dbg(acx->dev, "calculated duty cycle %02x\n", pwm_ratio);
 	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
 				 &pwm_ratio, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev,
-			      "failed to set display PWM ratio (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to set display PWM ratio (%d)\n", ret);
 		return ret;
 	}
 
@@ -132,40 +129,30 @@ static int acx424akp_set_brightness(struct backlight_device *bl)
 	par = 0xaa;
 	ret = mipi_dsi_dcs_write(dsi, 0xf3, &par, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev,
-			      "failed to unlock CMD 2 (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to unlock CMD 2 (%d)\n", ret);
 		return ret;
 	}
 	par = 0x01;
 	ret = mipi_dsi_dcs_write(dsi, 0x00, &par, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev,
-			      "failed to enter page 1 (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to enter page 1 (%d)\n", ret);
 		return ret;
 	}
 	par = 0x01;
 	ret = mipi_dsi_dcs_write(dsi, 0x7d, &par, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev,
-			      "failed to disable MTP reload (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to disable MTP reload (%d)\n", ret);
 		return ret;
 	}
 	ret = mipi_dsi_dcs_write(dsi, 0x22, &pwm_div, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev,
-			      "failed to set PWM divisor (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to set PWM divisor (%d)\n", ret);
 		return ret;
 	}
 	par = 0xaa;
 	ret = mipi_dsi_dcs_write(dsi, 0x7f, &par, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev,
-			      "failed to lock CMD 2 (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to lock CMD 2 (%d)\n", ret);
 		return ret;
 	}
 
@@ -174,9 +161,7 @@ static int acx424akp_set_brightness(struct backlight_device *bl)
 	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
 				 &par, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev,
-			      "failed to enable display backlight (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to enable display backlight (%d)\n", ret);
 		return ret;
 	}
 
@@ -196,22 +181,22 @@ static int acx424akp_read_id(struct acx424akp *acx)
 
 	ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID1, &vendor, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev, "could not vendor ID byte\n");
+		dev_err(acx->dev, "could not vendor ID byte\n");
 		return ret;
 	}
 	ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID2, &version, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev, "could not read device version byte\n");
+		dev_err(acx->dev, "could not read device version byte\n");
 		return ret;
 	}
 	ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID3, &panel, 1);
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev, "could not read panel ID byte\n");
+		dev_err(acx->dev, "could not read panel ID byte\n");
 		return ret;
 	}
 
 	if (vendor == 0x00) {
-		DRM_DEV_ERROR(acx->dev, "device vendor ID is zero\n");
+		dev_err(acx->dev, "device vendor ID is zero\n");
 		return -ENODEV;
 	}
 
@@ -220,14 +205,12 @@ static int acx424akp_read_id(struct acx424akp *acx)
 	case DISPLAY_SONY_ACX424AKP_ID1:
 	case DISPLAY_SONY_ACX424AKP_ID2:
 	case DISPLAY_SONY_ACX424AKP_ID3:
-		DRM_DEV_INFO(acx->dev,
-			     "MTP vendor: %02x, version: %02x, panel: %02x\n",
-			     vendor, version, panel);
+		dev_info(acx->dev, "MTP vendor: %02x, version: %02x, panel: %02x\n",
+			 vendor, version, panel);
 		break;
 	default:
-		DRM_DEV_INFO(acx->dev,
-			     "unknown vendor: %02x, version: %02x, panel: %02x\n",
-			     vendor, version, panel);
+		dev_info(acx->dev, "unknown vendor: %02x, version: %02x, panel: %02x\n",
+			 vendor, version, panel);
 		break;
 	}
 
@@ -240,7 +223,7 @@ static int acx424akp_power_on(struct acx424akp *acx)
 
 	ret = regulator_enable(acx->supply);
 	if (ret) {
-		DRM_DEV_ERROR(acx->dev, "failed to enable supply (%d)\n", ret);
+		dev_err(acx->dev, "failed to enable supply (%d)\n", ret);
 		return ret;
 	}
 
@@ -276,7 +259,7 @@ static int acx424akp_prepare(struct drm_panel *panel)
 
 	ret = acx424akp_read_id(acx);
 	if (ret) {
-		DRM_DEV_ERROR(acx->dev, "failed to read panel ID (%d)\n", ret);
+		dev_err(acx->dev, "failed to read panel ID (%d)\n", ret);
 		goto err_power_off;
 	}
 
@@ -284,8 +267,7 @@ static int acx424akp_prepare(struct drm_panel *panel)
 	ret = mipi_dsi_dcs_set_tear_on(dsi,
 				       MIPI_DSI_DCS_TEAR_MODE_VBLANK);
 	if (ret) {
-		DRM_DEV_ERROR(acx->dev, "failed to enable vblank TE (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to enable vblank TE (%d)\n", ret);
 		goto err_power_off;
 	}
 
@@ -302,23 +284,21 @@ static int acx424akp_prepare(struct drm_panel *panel)
 	ret = mipi_dsi_dcs_write(dsi, ACX424_DCS_SET_MDDI,
 				 &mddi, sizeof(mddi));
 	if (ret < 0) {
-		DRM_DEV_ERROR(acx->dev, "failed to set MDDI (%d)\n", ret);
+		dev_err(acx->dev, "failed to set MDDI (%d)\n", ret);
 		goto err_power_off;
 	}
 
 	/* Exit sleep mode */
 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
 	if (ret) {
-		DRM_DEV_ERROR(acx->dev, "failed to exit sleep mode (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to exit sleep mode (%d)\n", ret);
 		goto err_power_off;
 	}
 	msleep(140);
 
 	ret = mipi_dsi_dcs_set_display_on(dsi);
 	if (ret) {
-		DRM_DEV_ERROR(acx->dev, "failed to turn display on (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to turn display on (%d)\n", ret);
 		goto err_power_off;
 	}
 	if (acx->video_mode) {
@@ -351,24 +331,20 @@ static int acx424akp_unprepare(struct drm_panel *panel)
 	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
 				 &par, 1);
 	if (ret) {
-		DRM_DEV_ERROR(acx->dev,
-			      "failed to disable display backlight (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to disable display backlight (%d)\n", ret);
 		return ret;
 	}
 
 	ret = mipi_dsi_dcs_set_display_off(dsi);
 	if (ret) {
-		DRM_DEV_ERROR(acx->dev, "failed to turn display off (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to turn display off (%d)\n", ret);
 		return ret;
 	}
 
 	/* Enter sleep mode */
 	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
 	if (ret) {
-		DRM_DEV_ERROR(acx->dev, "failed to enter sleep mode (%d)\n",
-			      ret);
+		dev_err(acx->dev, "failed to enter sleep mode (%d)\n", ret);
 		return ret;
 	}
 	msleep(85);
@@ -418,7 +394,7 @@ static int acx424akp_get_modes(struct drm_panel *panel,
 		mode = drm_mode_duplicate(connector->dev,
 					  &sony_acx424akp_cmd_mode);
 	if (!mode) {
-		DRM_ERROR("bad mode or failed to add mode\n");
+		dev_err(panel->dev, "bad mode or failed to add mode\n");
 		return -EINVAL;
 	}
 	drm_mode_set_name(mode);
@@ -486,8 +462,7 @@ static int acx424akp_probe(struct mipi_dsi_device *dsi)
 	if (IS_ERR(acx->reset_gpio)) {
 		ret = PTR_ERR(acx->reset_gpio);
 		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev, "failed to request GPIO (%d)\n",
-				      ret);
+			dev_err(dev, "failed to request GPIO (%d)\n", ret);
 		return ret;
 	}
 
@@ -497,7 +472,7 @@ static int acx424akp_probe(struct mipi_dsi_device *dsi)
 	acx->bl = devm_backlight_device_register(dev, "acx424akp", dev, acx,
 						 &acx424akp_bl_ops, NULL);
 	if (IS_ERR(acx->bl)) {
-		DRM_DEV_ERROR(dev, "failed to register backlight device\n");
+		dev_err(dev, "failed to register backlight device\n");
 		return PTR_ERR(acx->bl);
 	}
 	acx->bl->props.max_brightness = 1023;
diff --git a/drivers/gpu/drm/panel/panel-tpo-tpg110.c b/drivers/gpu/drm/panel/panel-tpo-tpg110.c
index cd00cfa6ba14..d57ed75a977c 100644
--- a/drivers/gpu/drm/panel/panel-tpo-tpg110.c
+++ b/drivers/gpu/drm/panel/panel-tpo-tpg110.c
@@ -12,7 +12,6 @@
  */
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 #include <linux/bitops.h>
 #include <linux/delay.h>
@@ -238,7 +237,7 @@ static u8 tpg110_readwrite_reg(struct tpg110 *tpg, bool write,
 	spi_message_add_tail(&t[1], &m);
 	ret = spi_sync(tpg->spi, &m);
 	if (ret) {
-		DRM_DEV_ERROR(tpg->dev, "SPI message error %d\n", ret);
+		dev_err(tpg->dev, "SPI message error %d\n", ret);
 		return ret;
 	}
 	if (write)
@@ -265,18 +264,18 @@ static int tpg110_startup(struct tpg110 *tpg)
 	/* De-assert the reset signal */
 	gpiod_set_value_cansleep(tpg->grestb, 0);
 	usleep_range(1000, 2000);
-	DRM_DEV_DEBUG(tpg->dev, "de-asserted GRESTB\n");
+	dev_dbg(tpg->dev, "de-asserted GRESTB\n");
 
 	/* Test display communication */
 	tpg110_write_reg(tpg, TPG110_TEST, 0x55);
 	val = tpg110_read_reg(tpg, TPG110_TEST);
 	if (val != 0x55) {
-		DRM_DEV_ERROR(tpg->dev, "failed communication test\n");
+		dev_err(tpg->dev, "failed communication test\n");
 		return -ENODEV;
 	}
 
 	val = tpg110_read_reg(tpg, TPG110_CHIPID);
-	DRM_DEV_INFO(tpg->dev, "TPG110 chip ID: %d version: %d\n",
+	dev_info(tpg->dev, "TPG110 chip ID: %d version: %d\n",
 		 val >> 4, val & 0x0f);
 
 	/* Show display resolution */
@@ -284,27 +283,25 @@ static int tpg110_startup(struct tpg110 *tpg)
 	val &= TPG110_RES_MASK;
 	switch (val) {
 	case TPG110_RES_400X240_D:
-		DRM_DEV_INFO(tpg->dev,
-			 "IN 400x240 RGB -> OUT 800x480 RGB (dual scan)\n");
+		dev_info(tpg->dev, "IN 400x240 RGB -> OUT 800x480 RGB (dual scan)\n");
 		break;
 	case TPG110_RES_480X272_D:
-		DRM_DEV_INFO(tpg->dev,
-			 "IN 480x272 RGB -> OUT 800x480 RGB (dual scan)\n");
+		dev_info(tpg->dev, "IN 480x272 RGB -> OUT 800x480 RGB (dual scan)\n");
 		break;
 	case TPG110_RES_480X640:
-		DRM_DEV_INFO(tpg->dev, "480x640 RGB\n");
+		dev_info(tpg->dev, "480x640 RGB\n");
 		break;
 	case TPG110_RES_480X272:
-		DRM_DEV_INFO(tpg->dev, "480x272 RGB\n");
+		dev_info(tpg->dev, "480x272 RGB\n");
 		break;
 	case TPG110_RES_640X480:
-		DRM_DEV_INFO(tpg->dev, "640x480 RGB\n");
+		dev_info(tpg->dev, "640x480 RGB\n");
 		break;
 	case TPG110_RES_800X480:
-		DRM_DEV_INFO(tpg->dev, "800x480 RGB\n");
+		dev_info(tpg->dev, "800x480 RGB\n");
 		break;
 	default:
-		DRM_DEV_ERROR(tpg->dev, "ILLEGAL RESOLUTION 0x%02x\n", val);
+		dev_err(tpg->dev, "ILLEGAL RESOLUTION 0x%02x\n", val);
 		break;
 	}
 
@@ -322,13 +319,12 @@ static int tpg110_startup(struct tpg110 *tpg)
 		}
 	}
 	if (i == ARRAY_SIZE(tpg110_modes)) {
-		DRM_DEV_ERROR(tpg->dev, "unsupported mode (%02x) detected\n",
-			val);
+		dev_err(tpg->dev, "unsupported mode (%02x) detected\n", val);
 		return -ENODEV;
 	}
 
 	val = tpg110_read_reg(tpg, TPG110_CTRL2);
-	DRM_DEV_INFO(tpg->dev, "resolution and standby is controlled by %s\n",
+	dev_info(tpg->dev, "resolution and standby is controlled by %s\n",
 		 (val & TPG110_CTRL2_RES_PM_CTRL) ? "software" : "hardware");
 	/* Take control over resolution and standby */
 	val |= TPG110_CTRL2_RES_PM_CTRL;
@@ -414,15 +410,15 @@ static int tpg110_probe(struct spi_device *spi)
 	/* We get the physical display dimensions from the DT */
 	ret = of_property_read_u32(np, "width-mm", &tpg->width);
 	if (ret)
-		DRM_DEV_ERROR(dev, "no panel width specified\n");
+		dev_err(dev, "no panel width specified\n");
 	ret = of_property_read_u32(np, "height-mm", &tpg->height);
 	if (ret)
-		DRM_DEV_ERROR(dev, "no panel height specified\n");
+		dev_err(dev, "no panel height specified\n");
 
 	/* This asserts the GRESTB signal, putting the display into reset */
 	tpg->grestb = devm_gpiod_get(dev, "grestb", GPIOD_OUT_HIGH);
 	if (IS_ERR(tpg->grestb)) {
-		DRM_DEV_ERROR(dev, "no GRESTB GPIO\n");
+		dev_err(dev, "no GRESTB GPIO\n");
 		return -ENODEV;
 	}
 
@@ -430,7 +426,7 @@ static int tpg110_probe(struct spi_device *spi)
 	spi->mode |= SPI_3WIRE_HIZ;
 	ret = spi_setup(spi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(dev, "spi setup failed.\n");
+		dev_err(dev, "spi setup failed.\n");
 		return ret;
 	}
 	tpg->spi = spi;
diff --git a/drivers/gpu/drm/panel/panel-truly-nt35597.c b/drivers/gpu/drm/panel/panel-truly-nt35597.c
index 9b9c167b8dc8..b24b92d93ea5 100644
--- a/drivers/gpu/drm/panel/panel-truly-nt35597.c
+++ b/drivers/gpu/drm/panel/panel-truly-nt35597.c
@@ -17,7 +17,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 static const char * const regulator_names[] = {
 	"vdda",
@@ -231,9 +230,7 @@ static int truly_dcs_write(struct drm_panel *panel, u32 command)
 	for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) {
 		ret = mipi_dsi_dcs_write(ctx->dsi[i], command, NULL, 0);
 		if (ret < 0) {
-			DRM_DEV_ERROR(ctx->dev,
-				"cmd 0x%x failed for dsi = %d\n",
-				command, i);
+			dev_err(ctx->dev, "cmd 0x%x failed for dsi = %d\n", command, i);
 		}
 	}
 
@@ -250,8 +247,7 @@ static int truly_dcs_write_buf(struct drm_panel *panel,
 	for (i = 0; i < ARRAY_SIZE(ctx->dsi); i++) {
 		ret = mipi_dsi_dcs_write_buffer(ctx->dsi[i], buf, size);
 		if (ret < 0) {
-			DRM_DEV_ERROR(ctx->dev,
-				"failed to tx cmd [%d], err: %d\n", i, ret);
+			dev_err(ctx->dev, "failed to tx cmd [%d], err: %d\n", i, ret);
 			return ret;
 		}
 	}
@@ -300,16 +296,14 @@ static int truly_nt35597_power_off(struct truly_nt35597 *ctx)
 		ret = regulator_set_load(ctx->supplies[i].consumer,
 				regulator_disable_loads[i]);
 		if (ret) {
-			DRM_DEV_ERROR(ctx->dev,
-				"regulator_set_load failed %d\n", ret);
+			dev_err(ctx->dev, "regulator_set_load failed %d\n", ret);
 			return ret;
 		}
 	}
 
 	ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
 	if (ret) {
-		DRM_DEV_ERROR(ctx->dev,
-			"regulator_bulk_disable failed %d\n", ret);
+		dev_err(ctx->dev, "regulator_bulk_disable failed %d\n", ret);
 	}
 	return ret;
 }
@@ -325,8 +319,7 @@ static int truly_nt35597_disable(struct drm_panel *panel)
 	if (ctx->backlight) {
 		ret = backlight_disable(ctx->backlight);
 		if (ret < 0)
-			DRM_DEV_ERROR(ctx->dev, "backlight disable failed %d\n",
-				ret);
+			dev_err(ctx->dev, "backlight disable failed %d\n", ret);
 	}
 
 	ctx->enabled = false;
@@ -346,9 +339,7 @@ static int truly_nt35597_unprepare(struct drm_panel *panel)
 
 	ret = truly_dcs_write(panel, MIPI_DCS_SET_DISPLAY_OFF);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev,
-			"set_display_off cmd failed ret = %d\n",
-			ret);
+		dev_err(ctx->dev, "set_display_off cmd failed ret = %d\n", ret);
 	}
 
 	/* 120ms delay required here as per DCS spec */
@@ -356,13 +347,12 @@ static int truly_nt35597_unprepare(struct drm_panel *panel)
 
 	ret = truly_dcs_write(panel, MIPI_DCS_ENTER_SLEEP_MODE);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev,
-			"enter_sleep cmd failed ret = %d\n", ret);
+		dev_err(ctx->dev, "enter_sleep cmd failed ret = %d\n", ret);
 	}
 
 	ret = truly_nt35597_power_off(ctx);
 	if (ret < 0)
-		DRM_DEV_ERROR(ctx->dev, "power_off failed ret = %d\n", ret);
+		dev_err(ctx->dev, "power_off failed ret = %d\n", ret);
 
 	ctx->prepared = false;
 	return ret;
@@ -396,18 +386,14 @@ static int truly_nt35597_prepare(struct drm_panel *panel)
 				panel_on_cmds[i].size,
 					panel_on_cmds[i].commands);
 		if (ret < 0) {
-			DRM_DEV_ERROR(ctx->dev,
-				"cmd set tx failed i = %d ret = %d\n",
-					i, ret);
+			dev_err(ctx->dev, "cmd set tx failed i = %d ret = %d\n", i, ret);
 			goto power_off;
 		}
 	}
 
 	ret = truly_dcs_write(panel, MIPI_DCS_EXIT_SLEEP_MODE);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev,
-			"exit_sleep_mode cmd failed ret = %d\n",
-			ret);
+		dev_err(ctx->dev, "exit_sleep_mode cmd failed ret = %d\n", ret);
 		goto power_off;
 	}
 
@@ -416,8 +402,7 @@ static int truly_nt35597_prepare(struct drm_panel *panel)
 
 	ret = truly_dcs_write(panel, MIPI_DCS_SET_DISPLAY_ON);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev,
-			"set_display_on cmd failed ret = %d\n", ret);
+		dev_err(ctx->dev, "set_display_on cmd failed ret = %d\n", ret);
 		goto power_off;
 	}
 
@@ -430,7 +415,7 @@ static int truly_nt35597_prepare(struct drm_panel *panel)
 
 power_off:
 	if (truly_nt35597_power_off(ctx))
-		DRM_DEV_ERROR(ctx->dev, "power_off failed\n");
+		dev_err(ctx->dev, "power_off failed\n");
 	return ret;
 }
 
@@ -445,8 +430,7 @@ static int truly_nt35597_enable(struct drm_panel *panel)
 	if (ctx->backlight) {
 		ret = backlight_enable(ctx->backlight);
 		if (ret < 0)
-			DRM_DEV_ERROR(ctx->dev, "backlight enable failed %d\n",
-						  ret);
+			dev_err(ctx->dev, "backlight enable failed %d\n", ret);
 	}
 
 	ctx->enabled = true;
@@ -464,8 +448,7 @@ static int truly_nt35597_get_modes(struct drm_panel *panel,
 	config = ctx->config;
 	mode = drm_mode_create(connector->dev);
 	if (!mode) {
-		DRM_DEV_ERROR(ctx->dev,
-			"failed to create a new display mode\n");
+		dev_err(ctx->dev, "failed to create a new display mode\n");
 		return 0;
 	}
 
@@ -501,15 +484,13 @@ static int truly_nt35597_panel_add(struct truly_nt35597 *ctx)
 
 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->reset_gpio)) {
-		DRM_DEV_ERROR(dev, "cannot get reset gpio %ld\n",
-			PTR_ERR(ctx->reset_gpio));
+		dev_err(dev, "cannot get reset gpio %ld\n", PTR_ERR(ctx->reset_gpio));
 		return PTR_ERR(ctx->reset_gpio);
 	}
 
 	ctx->mode_gpio = devm_gpiod_get(dev, "mode", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->mode_gpio)) {
-		DRM_DEV_ERROR(dev, "cannot get mode gpio %ld\n",
-			PTR_ERR(ctx->mode_gpio));
+		dev_err(dev, "cannot get mode gpio %ld\n", PTR_ERR(ctx->mode_gpio));
 		return PTR_ERR(ctx->mode_gpio);
 	}
 
@@ -584,22 +565,21 @@ static int truly_nt35597_probe(struct mipi_dsi_device *dsi)
 
 	dsi1 = of_graph_get_remote_node(dsi->dev.of_node, 1, -1);
 	if (!dsi1) {
-		DRM_DEV_ERROR(dev,
-			"failed to get remote node for dsi1_device\n");
+		dev_err(dev, "failed to get remote node for dsi1_device\n");
 		return -ENODEV;
 	}
 
 	dsi1_host = of_find_mipi_dsi_host_by_node(dsi1);
 	of_node_put(dsi1);
 	if (!dsi1_host) {
-		DRM_DEV_ERROR(dev, "failed to find dsi host\n");
+		dev_err(dev, "failed to find dsi host\n");
 		return -EPROBE_DEFER;
 	}
 
 	/* register the second DSI device */
 	dsi1_device = mipi_dsi_device_register_full(dsi1_host, &info);
 	if (IS_ERR(dsi1_device)) {
-		DRM_DEV_ERROR(dev, "failed to create dsi device\n");
+		dev_err(dev, "failed to create dsi device\n");
 		return PTR_ERR(dsi1_device);
 	}
 
@@ -611,7 +591,7 @@ static int truly_nt35597_probe(struct mipi_dsi_device *dsi)
 
 	ret = truly_nt35597_panel_add(ctx);
 	if (ret) {
-		DRM_DEV_ERROR(dev, "failed to add panel\n");
+		dev_err(dev, "failed to add panel\n");
 		goto err_panel_add;
 	}
 
@@ -623,8 +603,7 @@ static int truly_nt35597_probe(struct mipi_dsi_device *dsi)
 			MIPI_DSI_CLOCK_NON_CONTINUOUS;
 		ret = mipi_dsi_attach(dsi_dev);
 		if (ret < 0) {
-			DRM_DEV_ERROR(dev,
-				"dsi attach failed i = %d\n", i);
+			dev_err(dev, "dsi attach failed i = %d\n", i);
 			goto err_dsi_attach;
 		}
 	}
diff --git a/drivers/gpu/drm/panel/panel-visionox-rm69299.c b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
index a12976b497ce..eb43503ec97b 100644
--- a/drivers/gpu/drm/panel/panel-visionox-rm69299.c
+++ b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
@@ -14,7 +14,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 struct visionox_rm69299 {
 	struct drm_panel panel;
@@ -69,16 +68,14 @@ static int visionox_rm69299_unprepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_SET_DISPLAY_OFF, NULL, 0);
 	if (ret < 0)
-		DRM_DEV_ERROR(ctx->panel.dev,
-			      "set_display_off cmd failed ret = %d\n", ret);
+		dev_err(ctx->panel.dev, "set_display_off cmd failed ret = %d\n", ret);
 
 	/* 120ms delay required here as per DCS spec */
 	msleep(120);
 
 	ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_ENTER_SLEEP_MODE, NULL, 0);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->panel.dev,
-			      "enter_sleep cmd failed ret = %d\n", ret);
+		dev_err(ctx->panel.dev, "enter_sleep cmd failed ret = %d\n", ret);
 	}
 
 	ret = visionox_rm69299_power_off(ctx);
@@ -103,36 +100,31 @@ static int visionox_rm69299_prepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]) { 0xfe, 0x00 }, 2);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->panel.dev,
-			      "cmd set tx 0 failed, ret = %d\n", ret);
+		dev_err(ctx->panel.dev, "cmd set tx 0 failed, ret = %d\n", ret);
 		goto power_off;
 	}
 
 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]) { 0xc2, 0x08 }, 2);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->panel.dev,
-			      "cmd set tx 1 failed, ret = %d\n", ret);
+		dev_err(ctx->panel.dev, "cmd set tx 1 failed, ret = %d\n", ret);
 		goto power_off;
 	}
 
 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]) { 0x35, 0x00 }, 2);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->panel.dev,
-			      "cmd set tx 2 failed, ret = %d\n", ret);
+		dev_err(ctx->panel.dev, "cmd set tx 2 failed, ret = %d\n", ret);
 		goto power_off;
 	}
 
 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, (u8[]) { 0x51, 0xff }, 2);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->panel.dev,
-			      "cmd set tx 3 failed, ret = %d\n", ret);
+		dev_err(ctx->panel.dev, "cmd set tx 3 failed, ret = %d\n", ret);
 		goto power_off;
 	}
 
 	ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_EXIT_SLEEP_MODE, NULL, 0);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->panel.dev,
-			      "exit_sleep_mode cmd failed ret = %d\n", ret);
+		dev_err(ctx->panel.dev, "exit_sleep_mode cmd failed ret = %d\n", ret);
 		goto power_off;
 	}
 
@@ -141,8 +133,7 @@ static int visionox_rm69299_prepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_write(ctx->dsi, MIPI_DCS_SET_DISPLAY_ON, NULL, 0);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->panel.dev,
-			      "set_display_on cmd failed ret = %d\n", ret);
+		dev_err(ctx->panel.dev, "set_display_on cmd failed ret = %d\n", ret);
 		goto power_off;
 	}
 
@@ -179,8 +170,7 @@ static int visionox_rm69299_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_create(connector->dev);
 	if (!mode) {
-		DRM_DEV_ERROR(ctx->panel.dev,
-			      "failed to create a new display mode\n");
+		dev_err(ctx->panel.dev, "failed to create a new display mode\n");
 		return 0;
 	}
 
@@ -225,8 +215,7 @@ static int visionox_rm69299_probe(struct mipi_dsi_device *dsi)
 	ctx->reset_gpio = devm_gpiod_get(ctx->panel.dev,
 					 "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->reset_gpio)) {
-		DRM_DEV_ERROR(dev, "cannot get reset gpio %ld\n",
-			      PTR_ERR(ctx->reset_gpio));
+		dev_err(dev, "cannot get reset gpio %ld\n", PTR_ERR(ctx->reset_gpio));
 		return PTR_ERR(ctx->reset_gpio);
 	}
 
@@ -242,23 +231,19 @@ static int visionox_rm69299_probe(struct mipi_dsi_device *dsi)
 			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
 	ret = mipi_dsi_attach(dsi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(dev, "dsi attach failed ret = %d\n", ret);
+		dev_err(dev, "dsi attach failed ret = %d\n", ret);
 		goto err_dsi_attach;
 	}
 
 	ret = regulator_set_load(ctx->supplies[0].consumer, 32000);
 	if (ret) {
-		DRM_DEV_ERROR(dev,
-			      "regulator set load failed for vdda supply ret = %d\n",
-			      ret);
+		dev_err(dev, "regulator set load failed for vdda supply ret = %d\n", ret);
 		goto err_set_load;
 	}
 
 	ret = regulator_set_load(ctx->supplies[1].consumer, 13200);
 	if (ret) {
-		DRM_DEV_ERROR(dev,
-			      "regulator set load failed for vdd3p3 supply ret = %d\n",
-			      ret);
+		dev_err(dev, "regulator set load failed for vdd3p3 supply ret = %d\n", ret);
 		goto err_set_load;
 	}
 
diff --git a/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c b/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c
index 06341deb60ca..55172d63a922 100644
--- a/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c
+++ b/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c
@@ -12,7 +12,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_print.h>
 
 #include <video/display_timing.h>
 #include <video/mipi_display.h>
@@ -135,7 +134,7 @@ static int xpp055c272_init_sequence(struct xpp055c272 *ctx)
 
 	msleep(60);
 
-	DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
+	dev_dbg(dev, "Panel init sequence done\n");
 	return 0;
 }
 
@@ -150,13 +149,11 @@ static int xpp055c272_unprepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_set_display_off(dsi);
 	if (ret < 0)
-		DRM_DEV_ERROR(ctx->dev, "failed to set display off: %d\n",
-			      ret);
+		dev_err(ctx->dev, "failed to set display off: %d\n", ret);
 
 	mipi_dsi_dcs_enter_sleep_mode(dsi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev, "failed to enter sleep mode: %d\n",
-			      ret);
+		dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret);
 		return ret;
 	}
 
@@ -177,17 +174,15 @@ static int xpp055c272_prepare(struct drm_panel *panel)
 	if (ctx->prepared)
 		return 0;
 
-	DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");
+	dev_dbg(ctx->dev, "Resetting the panel\n");
 	ret = regulator_enable(ctx->vci);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev,
-			      "Failed to enable vci supply: %d\n", ret);
+		dev_err(ctx->dev, "Failed to enable vci supply: %d\n", ret);
 		return ret;
 	}
 	ret = regulator_enable(ctx->iovcc);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev,
-			      "Failed to enable iovcc supply: %d\n", ret);
+		dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);
 		goto disable_vci;
 	}
 
@@ -201,14 +196,13 @@ static int xpp055c272_prepare(struct drm_panel *panel)
 
 	ret = xpp055c272_init_sequence(ctx);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
-			      ret);
+		dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
 		goto disable_iovcc;
 	}
 
 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
+		dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
 		goto disable_iovcc;
 	}
 
@@ -217,7 +211,7 @@ static int xpp055c272_prepare(struct drm_panel *panel)
 
 	ret = mipi_dsi_dcs_set_display_on(dsi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(ctx->dev, "Failed to set display on: %d\n", ret);
+		dev_err(ctx->dev, "Failed to set display on: %d\n", ret);
 		goto disable_iovcc;
 	}
 
@@ -256,9 +250,9 @@ static int xpp055c272_get_modes(struct drm_panel *panel,
 
 	mode = drm_mode_duplicate(connector->dev, &default_mode);
 	if (!mode) {
-		DRM_DEV_ERROR(ctx->dev, "Failed to add mode %ux%u@%u\n",
-			      default_mode.hdisplay, default_mode.vdisplay,
-			      drm_mode_vrefresh(&default_mode));
+		dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
+			default_mode.hdisplay, default_mode.vdisplay,
+			drm_mode_vrefresh(&default_mode));
 		return -ENOMEM;
 	}
 
@@ -290,7 +284,7 @@ static int xpp055c272_probe(struct mipi_dsi_device *dsi)
 
 	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(ctx->reset_gpio)) {
-		DRM_DEV_ERROR(dev, "cannot get reset gpio\n");
+		dev_err(dev, "cannot get reset gpio\n");
 		return PTR_ERR(ctx->reset_gpio);
 	}
 
@@ -298,9 +292,7 @@ static int xpp055c272_probe(struct mipi_dsi_device *dsi)
 	if (IS_ERR(ctx->vci)) {
 		ret = PTR_ERR(ctx->vci);
 		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev,
-				      "Failed to request vci regulator: %d\n",
-				      ret);
+			dev_err(dev, "Failed to request vci regulator: %d\n", ret);
 		return ret;
 	}
 
@@ -308,9 +300,7 @@ static int xpp055c272_probe(struct mipi_dsi_device *dsi)
 	if (IS_ERR(ctx->iovcc)) {
 		ret = PTR_ERR(ctx->iovcc);
 		if (ret != -EPROBE_DEFER)
-			DRM_DEV_ERROR(dev,
-				      "Failed to request iovcc regulator: %d\n",
-				      ret);
+			dev_err(dev, "Failed to request iovcc regulator: %d\n", ret);
 		return ret;
 	}
 
@@ -334,7 +324,7 @@ static int xpp055c272_probe(struct mipi_dsi_device *dsi)
 
 	ret = mipi_dsi_attach(dsi);
 	if (ret < 0) {
-		DRM_DEV_ERROR(dev, "mipi_dsi_attach failed: %d\n", ret);
+		dev_err(dev, "mipi_dsi_attach failed: %d\n", ret);
 		drm_panel_remove(&ctx->panel);
 		return ret;
 	}
@@ -349,13 +339,11 @@ static void xpp055c272_shutdown(struct mipi_dsi_device *dsi)
 
 	ret = drm_panel_unprepare(&ctx->panel);
 	if (ret < 0)
-		DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",
-			      ret);
+		dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret);
 
 	ret = drm_panel_disable(&ctx->panel);
 	if (ret < 0)
-		DRM_DEV_ERROR(&dsi->dev, "Failed to disable panel: %d\n",
-			      ret);
+		dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret);
 }
 
 static int xpp055c272_remove(struct mipi_dsi_device *dsi)
@@ -367,8 +355,7 @@ static int xpp055c272_remove(struct mipi_dsi_device *dsi)
 
 	ret = mipi_dsi_detach(dsi);
 	if (ret < 0)
-		DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",
-			      ret);
+		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
 
 	drm_panel_remove(&ctx->panel);
 
-- 
cgit