Merge tag 'drm-misc-next-2023-07-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v6.6:

UAPI Changes:

 * fbdev:
   * Make fbdev userspace interfaces optional; only leaves the
     framebuffer console active

 * prime:
   * Support dma-buf self-import for all drivers automatically: improves
     support for many userspace compositors

Cross-subsystem Changes:

 * backlight:
   * Fix interaction with fbdev in several drivers

 * base: Convert struct platform.remove to return void; part of a larger,
   tree-wide effort

 * dma-buf: Acquire reservation lock for mmap() in exporters; part
   of an on-going effort to simplify locking around dma-bufs

 * fbdev:
   * Use Linux device instead of fbdev device in many places
   * Use deferred-I/O helper macros in various drivers

 * i2c: Convert struct i2c from .probe_new to .probe; part of a larger,
   tree-wide effort

 * video:
   * Avoid including <linux/screen_info.h>

Core Changes:

 * atomic:
   * Improve logging

 * prime:
   * Remove struct drm_driver.gem_prime_mmap plus driver updates: all
     drivers now implement this callback with drm_gem_prime_mmap()

 * gem:
   * Support execution contexts: provides locking over multiple GEM
     objects

 * ttm:
   * Support init_on_free
   * Swapout fixes

Driver Changes:

 * accel:
   * ivpu: MMU updates; Support debugfs

 * ast:
   * Improve device-model detection
   * Cleanups

 * bridge:
   * dw-hdmi: Improve support for YUV420 bus format
   * dw-mipi-dsi: Fix enable/disable of DSI controller
   * lt9611uxc: Use MODULE_FIRMWARE()
   * ps8640: Remove broken EDID code
   * samsung-dsim: Fix command transfer
   * tc358764: Handle HS/VS polarity; Use BIT() macro; Various cleanups
   * Cleanups

 * ingenic:
   * Kconfig REGMAP fixes

 * loongson:
   * Support display controller

 * mgag200:
   * Minor fixes

 * mxsfb:
   * Support disabling overlay planes

 * nouveau:
   * Improve VRAM detection
   * Various fixes and cleanups

 * panel:
   * panel-edp: Support AUO B116XAB01.4
   * Support Visionox R66451 plus DT bindings
   * Cleanups

 * ssd130x:
   * Support per-controller default resolution plus DT bindings
   * Reduce memory-allocation overhead
   * Cleanups

 * tidss:
   * Support TI AM625 plus DT bindings
   * Implement new connector model plus driver updates

 * vkms
   * Improve write-back support
   * Documentation fixes

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230713090830.GA23281@linux-uq9g

9 files changed, 410 insertions, 18 deletions

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 203c0ef0bbfd..1a0fd0754692 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -793,6 +793,15 @@ config DRM_PANEL_VISIONOX_VTDR6130
 	  Say Y here if you want to enable support for Visionox
 	  VTDR6130 1080x2400 AMOLED DSI panel.
 
+config DRM_PANEL_VISIONOX_R66451
+	tristate "Visionox R66451"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for Visionox
+	  R66451 1080x2340 AMOLED DSI panel.
+
 config DRM_PANEL_WIDECHIPS_WS2401
 	tristate "Widechips WS2401 DPI panel driver"
 	depends on SPI && GPIOLIB
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 30cf553c8d1d..499e38244253 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -81,5 +81,6 @@ obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
 obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
 obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o
 obj-$(CONFIG_DRM_PANEL_VISIONOX_VTDR6130) += panel-visionox-vtdr6130.o
+obj-$(CONFIG_DRM_PANEL_VISIONOX_R66451) += panel-visionox-r66451.o
 obj-$(CONFIG_DRM_PANEL_WIDECHIPS_WS2401) += panel-widechips-ws2401.o
 obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o
diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
index fbd114b4f0be..df7e3cff004c 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -1866,6 +1866,7 @@ static const struct panel_delay delay_200_500_e200 = {
  */
 static const struct edp_panel_entry edp_panels[] = {
 	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"),
+	EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"),
 	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"),
 	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"),
 	EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01"),
diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
index de8758c30e6e..b47c3a679be0 100644
--- a/drivers/gpu/drm/panel/panel-lvds.c
+++ b/drivers/gpu/drm/panel/panel-lvds.c
@@ -228,15 +228,13 @@ static int panel_lvds_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int panel_lvds_remove(struct platform_device *pdev)
+static void panel_lvds_remove(struct platform_device *pdev)
 {
 	struct panel_lvds *lvds = platform_get_drvdata(pdev);
 
 	drm_panel_remove(&lvds->panel);
 
 	drm_panel_disable(&lvds->panel);
-
-	return 0;
 }
 
 static const struct of_device_id panel_lvds_of_table[] = {
@@ -248,7 +246,7 @@ MODULE_DEVICE_TABLE(of, panel_lvds_of_table);
 
 static struct platform_driver panel_lvds_driver = {
 	.probe		= panel_lvds_probe,
-	.remove		= panel_lvds_remove,
+	.remove_new	= panel_lvds_remove,
 	.driver		= {
 		.name	= "panel-lvds",
 		.of_match_table = panel_lvds_of_table,
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
index 102e1fc7ee38..fec0d014fd0e 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
@@ -66,7 +66,6 @@ static void s6d7aa0_reset(struct s6d7aa0 *ctx)
 static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
 {
 	struct mipi_dsi_device *dsi = ctx->dsi;
-	int ret = 0;
 
 	if (lock) {
 		mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD1, 0xa5, 0xa5);
@@ -80,7 +79,7 @@ static int s6d7aa0_lock(struct s6d7aa0 *ctx, bool lock)
 			mipi_dsi_dcs_write_seq(dsi, MCS_PASSWD3, 0xa5, 0xa5);
 	}
 
-	return ret;
+	return 0;
 }
 
 static int s6d7aa0_on(struct s6d7aa0 *ctx)
diff --git a/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c b/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c
index c250ca36a5b3..658c7c040570 100644
--- a/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c
+++ b/drivers/gpu/drm/panel/panel-seiko-43wvf1g.c
@@ -278,14 +278,12 @@ static int seiko_panel_probe(struct device *dev,
 	return 0;
 }
 
-static int seiko_panel_remove(struct platform_device *pdev)
+static void seiko_panel_remove(struct platform_device *pdev)
 {
 	struct seiko_panel *panel = platform_get_drvdata(pdev);
 
 	drm_panel_remove(&panel->base);
 	drm_panel_disable(&panel->base);
-
-	return 0;
 }
 
 static void seiko_panel_shutdown(struct platform_device *pdev)
@@ -347,7 +345,7 @@ static struct platform_driver seiko_panel_platform_driver = {
 		.of_match_table = platform_of_match,
 	},
 	.probe = seiko_panel_platform_probe,
-	.remove = seiko_panel_remove,
+	.remove_new = seiko_panel_remove,
 	.shutdown = seiko_panel_shutdown,
 };
 module_platform_driver(seiko_panel_platform_driver);
diff --git a/drivers/gpu/drm/panel/panel-sharp-ls037v7dw01.c b/drivers/gpu/drm/panel/panel-sharp-ls037v7dw01.c
index a07d0f6c3e69..76bd9e810827 100644
--- a/drivers/gpu/drm/panel/panel-sharp-ls037v7dw01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-ls037v7dw01.c
@@ -189,15 +189,13 @@ static int ls037v7dw01_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int ls037v7dw01_remove(struct platform_device *pdev)
+static void ls037v7dw01_remove(struct platform_device *pdev)
 {
 	struct ls037v7dw01_panel *lcd = platform_get_drvdata(pdev);
 
 	drm_panel_remove(&lcd->panel);
 	drm_panel_disable(&lcd->panel);
 	drm_panel_unprepare(&lcd->panel);
-
-	return 0;
 }
 
 static const struct of_device_id ls037v7dw01_of_match[] = {
@@ -209,7 +207,7 @@ MODULE_DEVICE_TABLE(of, ls037v7dw01_of_match);
 
 static struct platform_driver ls037v7dw01_driver = {
 	.probe		= ls037v7dw01_probe,
-	.remove		= ls037v7dw01_remove,
+	.remove_new	= ls037v7dw01_remove,
 	.driver		= {
 		.name = "panel-sharp-ls037v7dw01",
 		.of_match_table = ls037v7dw01_of_match,
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index aaba36b3a674..18dc251749fb 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -4468,11 +4468,9 @@ static int panel_simple_platform_probe(struct platform_device *pdev)
 	return panel_simple_probe(&pdev->dev, id->data);
 }
 
-static int panel_simple_platform_remove(struct platform_device *pdev)
+static void panel_simple_platform_remove(struct platform_device *pdev)
 {
 	panel_simple_remove(&pdev->dev);
-
-	return 0;
 }
 
 static void panel_simple_platform_shutdown(struct platform_device *pdev)
@@ -4493,7 +4491,7 @@ static struct platform_driver panel_simple_platform_driver = {
 		.pm = &panel_simple_pm_ops,
 	},
 	.probe = panel_simple_platform_probe,
-	.remove = panel_simple_platform_remove,
+	.remove_new = panel_simple_platform_remove,
 	.shutdown = panel_simple_platform_shutdown,
 };
 
diff --git a/drivers/gpu/drm/panel/panel-visionox-r66451.c b/drivers/gpu/drm/panel/panel-visionox-r66451.c
new file mode 100644
index 000000000000..00fc28ad3d07
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-visionox-r66451.c
@@ -0,0 +1,390 @@
+//SPDX-License-Identifier: GPL-2.0-only
+//Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/display/drm_dsc.h>
+#include <drm/display/drm_dsc_helper.h>
+
+#include <video/mipi_display.h>
+
+struct visionox_r66451 {
+	struct drm_panel panel;
+	struct mipi_dsi_device *dsi;
+	struct gpio_desc *reset_gpio;
+	struct regulator_bulk_data supplies[2];
+	bool prepared, enabled;
+};
+
+static inline struct visionox_r66451 *to_visionox_r66451(struct drm_panel *panel)
+{
+	return container_of(panel, struct visionox_r66451, panel);
+}
+
+static void visionox_r66451_reset(struct visionox_r66451 *ctx)
+{
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	usleep_range(10000, 10100);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+	usleep_range(10000, 10100);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	usleep_range(10000, 10100);
+}
+
+static int visionox_r66451_on(struct visionox_r66451 *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xc2,
+			       0x09, 0x24, 0x0c, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00,
+			       0x09, 0x3c);
+	mipi_dsi_dcs_write_seq(dsi, 0xd7,
+			       0x00, 0xb9, 0x3c, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a,
+			       0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19,
+			       0x3c, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a);
+	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x80);
+	mipi_dsi_dcs_write_seq(dsi, 0xde,
+			       0x40, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18,
+			       0x10, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18, 0x02, 0x00, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x04);
+	mipi_dsi_dcs_write_seq(dsi, 0xe8, 0x00, 0x02);
+	mipi_dsi_dcs_write_seq(dsi, 0xe4, 0x00, 0x08);
+	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xc4,
+			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x32);
+	mipi_dsi_dcs_write_seq(dsi, 0xcf,
+			       0x64, 0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08,
+			       0x00, 0x0b, 0x77, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+			       0x02, 0x02, 0x02, 0x02, 0x02, 0x03);
+	mipi_dsi_dcs_write_seq(dsi, 0xd3,
+			       0x45, 0x00, 0x00, 0x01, 0x13, 0x15, 0x00, 0x15, 0x07,
+			       0x0f, 0x77, 0x77, 0x77, 0x37, 0xb2, 0x11, 0x00, 0xa0,
+			       0x3c, 0x9c);
+	mipi_dsi_dcs_write_seq(dsi, 0xd7,
+			       0x00, 0xb9, 0x34, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a,
+			       0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19,
+			       0x34, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a);
+	mipi_dsi_dcs_write_seq(dsi, 0xd8,
+			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x3a, 0x00, 0x3a, 0x00, 0x3a, 0x00, 0x3a, 0x00, 0x3a,
+			       0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x00, 0x0a, 0x00, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a,
+			       0x00, 0x32, 0x00, 0x0a, 0x00, 0x22);
+	mipi_dsi_dcs_write_seq(dsi, 0xdf,
+			       0x50, 0x42, 0x58, 0x81, 0x2d, 0x00, 0x00, 0x00, 0x00,
+			       0x00, 0x00, 0x6b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			       0x00, 0x00, 0x01, 0x0f, 0xff, 0xd4, 0x0e, 0x00, 0x00,
+			       0x00, 0x00, 0x00, 0x00, 0x0f, 0x53, 0xf1, 0x00, 0x00,
+			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xf7, 0x01);
+	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x80);
+	mipi_dsi_dcs_write_seq(dsi, 0xe4, 0x34, 0xb4, 0x00, 0x00, 0x00, 0x39, 0x04, 0x09, 0x34);
+	mipi_dsi_dcs_write_seq(dsi, 0xe6, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x04);
+	mipi_dsi_dcs_write_seq(dsi, 0xdf, 0x50, 0x40);
+	mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x50, 0x00, 0x00, 0x00, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xf2, 0x11);
+	mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x01, 0x00, 0x00, 0x00, 0x01);
+	mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x00, 0x02);
+	mipi_dsi_dcs_write_seq(dsi, 0xf2, 0x19);
+	mipi_dsi_dcs_write_seq(dsi, 0xdf, 0x50, 0x42);
+	mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	mipi_dsi_dcs_set_column_address(dsi, 0, 1080 - 1);
+	mipi_dsi_dcs_set_page_address(dsi, 0, 2340 - 1);
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	return 0;
+}
+
+static int visionox_r66451_off(struct visionox_r66451 *ctx)
+{
+	ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+	return 0;
+}
+
+static int visionox_r66451_prepare(struct drm_panel *panel)
+{
+	struct visionox_r66451 *ctx = to_visionox_r66451(panel);
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	if (ctx->prepared)
+		return 0;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
+				    ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	visionox_r66451_reset(ctx);
+
+	ret = visionox_r66451_on(ctx);
+	if (ret < 0) {
+		dev_err(dev, "Failed to initialize panel: %d\n", ret);
+		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+		return ret;
+	}
+
+	mipi_dsi_compression_mode(ctx->dsi, true);
+
+	ctx->prepared = true;
+	return 0;
+}
+
+static int visionox_r66451_unprepare(struct drm_panel *panel)
+{
+	struct visionox_r66451 *ctx = to_visionox_r66451(panel);
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	if (!ctx->prepared)
+		return 0;
+
+	ret = visionox_r66451_off(ctx);
+	if (ret < 0)
+		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+
+	ctx->prepared = false;
+	return 0;
+}
+
+static const struct drm_display_mode visionox_r66451_mode = {
+	.clock = 345830,
+	.hdisplay = 1080,
+	.hsync_start = 1175,
+	.hsync_end = 1176,
+	.htotal = 1216,
+	.vdisplay = 2340,
+	.vsync_start = 2365,
+	.vsync_end = 2366,
+	.vtotal = 2370,
+	.width_mm = 0,
+	.height_mm = 0,
+	.type = DRM_MODE_TYPE_DRIVER,
+};
+
+static int visionox_r66451_enable(struct drm_panel *panel)
+{
+	struct visionox_r66451 *ctx = to_visionox_r66451(panel);
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct drm_dsc_picture_parameter_set pps;
+	int ret;
+
+	if (ctx->enabled)
+		return 0;
+
+	if (!dsi->dsc) {
+		dev_err(&dsi->dev, "DSC not attached to DSI\n");
+		return -ENODEV;
+	}
+
+	drm_dsc_pps_payload_pack(&pps, dsi->dsc);
+	ret = mipi_dsi_picture_parameter_set(dsi, &pps);
+	if (ret) {
+		dev_err(&dsi->dev, "Failed to set PPS\n");
+		return ret;
+	}
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(&dsi->dev, "Failed to exit sleep mode: %d\n", ret);
+		return ret;
+	}
+	msleep(120);
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret < 0) {
+		dev_err(&dsi->dev, "Failed on set display on: %d\n", ret);
+		return ret;
+	}
+	msleep(20);
+
+	ctx->enabled = true;
+
+	return 0;
+}
+
+static int visionox_r66451_disable(struct drm_panel *panel)
+{
+	struct visionox_r66451 *ctx = to_visionox_r66451(panel);
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	ctx->enabled = false;
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display off: %d\n", ret);
+		return ret;
+	}
+	msleep(20);
+
+	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;
+}
+
+static int visionox_r66451_get_modes(struct drm_panel *panel,
+				    struct drm_connector *connector)
+{
+	drm_connector_helper_get_modes_fixed(connector, &visionox_r66451_mode);
+	return 1;
+}
+
+static const struct drm_panel_funcs visionox_r66451_funcs = {
+	.prepare = visionox_r66451_prepare,
+	.unprepare = visionox_r66451_unprepare,
+	.get_modes = visionox_r66451_get_modes,
+	.enable = visionox_r66451_enable,
+	.disable = visionox_r66451_disable,
+};
+
+static int visionox_r66451_bl_update_status(struct backlight_device *bl)
+{
+	struct mipi_dsi_device *dsi = bl_get_data(bl);
+	u16 brightness = backlight_get_brightness(bl);
+
+	return mipi_dsi_dcs_set_display_brightness(dsi, brightness);
+}
+
+static const struct backlight_ops visionox_r66451_bl_ops = {
+	.update_status = visionox_r66451_bl_update_status,
+};
+
+static struct backlight_device *
+visionox_r66451_create_backlight(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	const struct backlight_properties props = {
+		.type = BACKLIGHT_RAW,
+		.brightness = 255,
+		.max_brightness = 4095,
+	};
+
+	return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+					      &visionox_r66451_bl_ops, &props);
+}
+
+static int visionox_r66451_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct visionox_r66451 *ctx;
+	struct drm_dsc_config *dsc;
+	int ret = 0;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	dsc = devm_kzalloc(dev, sizeof(*dsc), GFP_KERNEL);
+	if (!dsc)
+		return -ENOMEM;
+
+	/* Set DSC params */
+	dsc->dsc_version_major = 0x1;
+	dsc->dsc_version_minor = 0x2;
+
+	dsc->slice_height = 20;
+	dsc->slice_width = 540;
+	dsc->slice_count = 2;
+	dsc->bits_per_component = 8;
+	dsc->bits_per_pixel = 8 << 4;
+	dsc->block_pred_enable = true;
+
+	dsi->dsc = dsc;
+
+	ctx->supplies[0].supply = "vddio";
+	ctx->supplies[1].supply = "vdd";
+
+	ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies),
+			ctx->supplies);
+
+	if (ret < 0)
+		return ret;
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ctx->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), "Failed to get reset-gpios\n");
+
+	ctx->dsi = dsi;
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+	drm_panel_init(&ctx->panel, dev, &visionox_r66451_funcs, DRM_MODE_CONNECTOR_DSI);
+	ctx->panel.backlight = visionox_r66451_create_backlight(dsi);
+	if (IS_ERR(ctx->panel.backlight))
+		return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
+				"Failed to create backlight\n");
+
+	drm_panel_add(&ctx->panel);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+		drm_panel_remove(&ctx->panel);
+	}
+
+	return ret;
+}
+
+static void visionox_r66451_remove(struct mipi_dsi_device *dsi)
+{
+	struct visionox_r66451 *ctx = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret < 0)
+		dev_err(&dsi->dev, "Failed to detach DSI host: %d\n", ret);
+
+	drm_panel_remove(&ctx->panel);
+}
+
+static const struct of_device_id visionox_r66451_of_match[] = {
+	{.compatible = "visionox,r66451"},
+	{ /*sentinel*/ }
+};
+MODULE_DEVICE_TABLE(of, visionox_r66451_of_match);
+
+static struct mipi_dsi_driver visionox_r66451_driver = {
+	.probe = visionox_r66451_probe,
+	.remove = visionox_r66451_remove,
+	.driver = {
+		.name = "panel-visionox-r66451",
+		.of_match_table = visionox_r66451_of_match,
+	},
+};
+
+module_mipi_dsi_driver(visionox_r66451_driver);
+
+MODULE_AUTHOR("Jessica Zhang <quic_jesszhan@quicinc.com>");
+MODULE_DESCRIPTION("Panel driver for the Visionox R66451 AMOLED DSI panel");
+MODULE_LICENSE("GPL");