From 9ef7e25ff62033065ec019425a9c769374455a1a Mon Sep 17 00:00:00 2001
From: Thierry Reding <treding@nvidia.com>
Date: Tue, 14 Apr 2015 14:57:14 +0200
Subject: drm/panel: Add Samsung prefix to panel drivers

The likelihood of getting a large number of panel drivers from different
vendors is quite high. Add a prefix to the two existing Samsung panel
drivers to set a guideline for future patch submissions. Using vendor
prefixes consistently should allow a cleaner organization of the tree.

Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/panel/Kconfig                 |    8 +-
 drivers/gpu/drm/panel/Makefile                |    4 +-
 drivers/gpu/drm/panel/panel-ld9040.c          |  389 ---------
 drivers/gpu/drm/panel/panel-s6e8aa0.c         | 1067 -------------------------
 drivers/gpu/drm/panel/panel-samsung-ld9040.c  |  389 +++++++++
 drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c | 1067 +++++++++++++++++++++++++
 6 files changed, 1462 insertions(+), 1462 deletions(-)
 delete mode 100644 drivers/gpu/drm/panel/panel-ld9040.c
 delete mode 100644 drivers/gpu/drm/panel/panel-s6e8aa0.c
 create mode 100644 drivers/gpu/drm/panel/panel-samsung-ld9040.c
 create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c

(limited to 'drivers')

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 6d64c7b..5be25d9 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -18,13 +18,13 @@ config DRM_PANEL_SIMPLE
 	  that it can be automatically turned off when the panel goes into a
 	  low power state.
 
-config DRM_PANEL_LD9040
-	tristate "LD9040 RGB/SPI panel"
+config DRM_PANEL_SAMSUNG_LD9040
+	tristate "Samsung LD9040 RGB/SPI panel"
 	depends on OF && SPI
 	select VIDEOMODE_HELPERS
 
-config DRM_PANEL_S6E8AA0
-	tristate "S6E8AA0 DSI video mode panel"
+config DRM_PANEL_SAMSUNG_S6E8AA0
+	tristate "Samsung S6E8AA0 DSI video mode panel"
 	depends on OF
 	select DRM_MIPI_DSI
 	select VIDEOMODE_HELPERS
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 4b2a043..8026ce5 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -1,4 +1,4 @@
 obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
-obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o
-obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o
+obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
+obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
 obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
diff --git a/drivers/gpu/drm/panel/panel-ld9040.c b/drivers/gpu/drm/panel/panel-ld9040.c
deleted file mode 100644
index 9c27bde..0000000
--- a/drivers/gpu/drm/panel/panel-ld9040.c
+++ /dev/null
@@ -1,389 +0,0 @@
-/*
- * ld9040 AMOLED LCD drm_panel driver.
- *
- * Copyright (c) 2014 Samsung Electronics Co., Ltd
- * Derived from drivers/video/backlight/ld9040.c
- *
- * Andrzej Hajda <a.hajda@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <drm/drmP.h>
-#include <drm/drm_panel.h>
-
-#include <linux/gpio/consumer.h>
-#include <linux/regulator/consumer.h>
-#include <linux/spi/spi.h>
-
-#include <video/mipi_display.h>
-#include <video/of_videomode.h>
-#include <video/videomode.h>
-
-/* Manufacturer Command Set */
-#define MCS_MANPWR		0xb0
-#define MCS_ELVSS_ON		0xb1
-#define MCS_USER_SETTING	0xf0
-#define MCS_DISPCTL		0xf2
-#define MCS_POWER_CTRL		0xf4
-#define MCS_GTCON		0xf7
-#define MCS_PANEL_CONDITION	0xf8
-#define MCS_GAMMA_SET1		0xf9
-#define MCS_GAMMA_CTRL		0xfb
-
-/* array of gamma tables for gamma value 2.2 */
-static u8 const ld9040_gammas[25][22] = {
-	{ 0xf9, 0x00, 0x13, 0xb2, 0xba, 0xd2, 0x00, 0x30, 0x00, 0xaf, 0xc0,
-	  0xb8, 0xcd, 0x00, 0x3d, 0x00, 0xa8, 0xb8, 0xb7, 0xcd, 0x00, 0x44 },
-	{ 0xf9, 0x00, 0x13, 0xb9, 0xb9, 0xd0, 0x00, 0x3c, 0x00, 0xaf, 0xbf,
-	  0xb6, 0xcb, 0x00, 0x4b, 0x00, 0xa8, 0xb9, 0xb5, 0xcc, 0x00, 0x52 },
-	{ 0xf9, 0x00, 0x13, 0xba, 0xb9, 0xcd, 0x00, 0x41, 0x00, 0xb0, 0xbe,
-	  0xb5, 0xc9, 0x00, 0x51, 0x00, 0xa9, 0xb9, 0xb5, 0xca, 0x00, 0x57 },
-	{ 0xf9, 0x00, 0x13, 0xb9, 0xb8, 0xcd, 0x00, 0x46, 0x00, 0xb1, 0xbc,
-	  0xb5, 0xc8, 0x00, 0x56, 0x00, 0xaa, 0xb8, 0xb4, 0xc9, 0x00, 0x5d },
-	{ 0xf9, 0x00, 0x13, 0xba, 0xb8, 0xcb, 0x00, 0x4b, 0x00, 0xb3, 0xbc,
-	  0xb4, 0xc7, 0x00, 0x5c, 0x00, 0xac, 0xb8, 0xb4, 0xc8, 0x00, 0x62 },
-	{ 0xf9, 0x00, 0x13, 0xbb, 0xb7, 0xca, 0x00, 0x4f, 0x00, 0xb4, 0xbb,
-	  0xb3, 0xc7, 0x00, 0x60, 0x00, 0xad, 0xb8, 0xb4, 0xc7, 0x00, 0x67 },
-	{ 0xf9, 0x00, 0x47, 0xba, 0xb6, 0xca, 0x00, 0x53, 0x00, 0xb5, 0xbb,
-	  0xb3, 0xc6, 0x00, 0x65, 0x00, 0xae, 0xb8, 0xb3, 0xc7, 0x00, 0x6c },
-	{ 0xf9, 0x00, 0x71, 0xbb, 0xb5, 0xc8, 0x00, 0x57, 0x00, 0xb5, 0xbb,
-	  0xb0, 0xc5, 0x00, 0x6a, 0x00, 0xae, 0xb9, 0xb1, 0xc6, 0x00, 0x70 },
-	{ 0xf9, 0x00, 0x7b, 0xbb, 0xb4, 0xc8, 0x00, 0x5b, 0x00, 0xb5, 0xba,
-	  0xb1, 0xc4, 0x00, 0x6e, 0x00, 0xae, 0xb9, 0xb0, 0xc5, 0x00, 0x75 },
-	{ 0xf9, 0x00, 0x82, 0xba, 0xb4, 0xc7, 0x00, 0x5f, 0x00, 0xb5, 0xba,
-	  0xb0, 0xc3, 0x00, 0x72, 0x00, 0xae, 0xb8, 0xb0, 0xc3, 0x00, 0x7a },
-	{ 0xf9, 0x00, 0x89, 0xba, 0xb3, 0xc8, 0x00, 0x62, 0x00, 0xb6, 0xba,
-	  0xaf, 0xc3, 0x00, 0x76, 0x00, 0xaf, 0xb7, 0xae, 0xc4, 0x00, 0x7e },
-	{ 0xf9, 0x00, 0x8b, 0xb9, 0xb3, 0xc7, 0x00, 0x65, 0x00, 0xb7, 0xb8,
-	  0xaf, 0xc3, 0x00, 0x7a, 0x00, 0x80, 0xb6, 0xae, 0xc4, 0x00, 0x81 },
-	{ 0xf9, 0x00, 0x93, 0xba, 0xb3, 0xc5, 0x00, 0x69, 0x00, 0xb8, 0xb9,
-	  0xae, 0xc1, 0x00, 0x7f, 0x00, 0xb0, 0xb6, 0xae, 0xc3, 0x00, 0x85 },
-	{ 0xf9, 0x00, 0x97, 0xba, 0xb2, 0xc5, 0x00, 0x6c, 0x00, 0xb8, 0xb8,
-	  0xae, 0xc1, 0x00, 0x82, 0x00, 0xb0, 0xb6, 0xae, 0xc2, 0x00, 0x89 },
-	{ 0xf9, 0x00, 0x9a, 0xba, 0xb1, 0xc4, 0x00, 0x6f, 0x00, 0xb8, 0xb8,
-	  0xad, 0xc0, 0x00, 0x86, 0x00, 0xb0, 0xb7, 0xad, 0xc0, 0x00, 0x8d },
-	{ 0xf9, 0x00, 0x9c, 0xb9, 0xb0, 0xc4, 0x00, 0x72, 0x00, 0xb8, 0xb8,
-	  0xac, 0xbf, 0x00, 0x8a, 0x00, 0xb0, 0xb6, 0xac, 0xc0, 0x00, 0x91 },
-	{ 0xf9, 0x00, 0x9e, 0xba, 0xb0, 0xc2, 0x00, 0x75, 0x00, 0xb9, 0xb8,
-	  0xab, 0xbe, 0x00, 0x8e, 0x00, 0xb0, 0xb6, 0xac, 0xbf, 0x00, 0x94 },
-	{ 0xf9, 0x00, 0xa0, 0xb9, 0xaf, 0xc3, 0x00, 0x77, 0x00, 0xb9, 0xb7,
-	  0xab, 0xbe, 0x00, 0x90, 0x00, 0xb0, 0xb6, 0xab, 0xbf, 0x00, 0x97 },
-	{ 0xf9, 0x00, 0xa2, 0xb9, 0xaf, 0xc2, 0x00, 0x7a, 0x00, 0xb9, 0xb7,
-	  0xaa, 0xbd, 0x00, 0x94, 0x00, 0xb0, 0xb5, 0xab, 0xbf, 0x00, 0x9a },
-	{ 0xf9, 0x00, 0xa4, 0xb9, 0xaf, 0xc1, 0x00, 0x7d, 0x00, 0xb9, 0xb6,
-	  0xaa, 0xbb, 0x00, 0x97, 0x00, 0xb1, 0xb5, 0xaa, 0xbf, 0x00, 0x9d },
-	{ 0xf9, 0x00, 0xa4, 0xb8, 0xb0, 0xbf, 0x00, 0x80, 0x00, 0xb8, 0xb6,
-	  0xaa, 0xbc, 0x00, 0x9a, 0x00, 0xb0, 0xb5, 0xab, 0xbd, 0x00, 0xa0 },
-	{ 0xf9, 0x00, 0xa8, 0xb8, 0xae, 0xbe, 0x00, 0x84, 0x00, 0xb9, 0xb7,
-	  0xa8, 0xbc, 0x00, 0x9d, 0x00, 0xb2, 0xb5, 0xaa, 0xbc, 0x00, 0xa4 },
-	{ 0xf9, 0x00, 0xa9, 0xb6, 0xad, 0xbf, 0x00, 0x86, 0x00, 0xb8, 0xb5,
-	  0xa8, 0xbc, 0x00, 0xa0, 0x00, 0xb3, 0xb3, 0xa9, 0xbc, 0x00, 0xa7 },
-	{ 0xf9, 0x00, 0xa9, 0xb7, 0xae, 0xbd, 0x00, 0x89, 0x00, 0xb7, 0xb6,
-	  0xa8, 0xba, 0x00, 0xa4, 0x00, 0xb1, 0xb4, 0xaa, 0xbb, 0x00, 0xaa },
-	{ 0xf9, 0x00, 0xa7, 0xb4, 0xae, 0xbf, 0x00, 0x91, 0x00, 0xb2, 0xb4,
-	  0xaa, 0xbb, 0x00, 0xac, 0x00, 0xb3, 0xb1, 0xaa, 0xbc, 0x00, 0xb3 },
-};
-
-struct ld9040 {
-	struct device *dev;
-	struct drm_panel panel;
-
-	struct regulator_bulk_data supplies[2];
-	struct gpio_desc *reset_gpio;
-	u32 power_on_delay;
-	u32 reset_delay;
-	struct videomode vm;
-	u32 width_mm;
-	u32 height_mm;
-
-	int brightness;
-
-	/* This field is tested by functions directly accessing bus before
-	 * transfer, transfer is skipped if it is set. In case of transfer
-	 * failure or unexpected response the field is set to error value.
-	 * Such construct allows to eliminate many checks in higher level
-	 * functions.
-	 */
-	int error;
-};
-
-static inline struct ld9040 *panel_to_ld9040(struct drm_panel *panel)
-{
-	return container_of(panel, struct ld9040, panel);
-}
-
-static int ld9040_clear_error(struct ld9040 *ctx)
-{
-	int ret = ctx->error;
-
-	ctx->error = 0;
-	return ret;
-}
-
-static int ld9040_spi_write_word(struct ld9040 *ctx, u16 data)
-{
-	struct spi_device *spi = to_spi_device(ctx->dev);
-	struct spi_transfer xfer = {
-		.len		= 2,
-		.tx_buf		= &data,
-	};
-	struct spi_message msg;
-
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfer, &msg);
-
-	return spi_sync(spi, &msg);
-}
-
-static void ld9040_dcs_write(struct ld9040 *ctx, const u8 *data, size_t len)
-{
-	int ret = 0;
-
-	if (ctx->error < 0 || len == 0)
-		return;
-
-	dev_dbg(ctx->dev, "writing dcs seq: %*ph\n", (int)len, data);
-	ret = ld9040_spi_write_word(ctx, *data);
-
-	while (!ret && --len) {
-		++data;
-		ret = ld9040_spi_write_word(ctx, *data | 0x100);
-	}
-
-	if (ret) {
-		dev_err(ctx->dev, "error %d writing dcs seq: %*ph\n", ret,
-			(int)len, data);
-		ctx->error = ret;
-	}
-
-	usleep_range(300, 310);
-}
-
-#define ld9040_dcs_write_seq_static(ctx, seq...) \
-({\
-	static const u8 d[] = { seq };\
-	ld9040_dcs_write(ctx, d, ARRAY_SIZE(d));\
-})
-
-static void ld9040_brightness_set(struct ld9040 *ctx)
-{
-	ld9040_dcs_write(ctx, ld9040_gammas[ctx->brightness],
-			 ARRAY_SIZE(ld9040_gammas[ctx->brightness]));
-
-	ld9040_dcs_write_seq_static(ctx, MCS_GAMMA_CTRL, 0x02, 0x5a);
-}
-
-static void ld9040_init(struct ld9040 *ctx)
-{
-	ld9040_dcs_write_seq_static(ctx, MCS_USER_SETTING, 0x5a, 0x5a);
-	ld9040_dcs_write_seq_static(ctx, MCS_PANEL_CONDITION,
-		0x05, 0x65, 0x96, 0x71, 0x7d, 0x19, 0x3b, 0x0d,
-		0x19, 0x7e, 0x0d, 0xe2, 0x00, 0x00, 0x7e, 0x7d,
-		0x07, 0x07, 0x20, 0x20, 0x20, 0x02, 0x02);
-	ld9040_dcs_write_seq_static(ctx, MCS_DISPCTL,
-		0x02, 0x08, 0x08, 0x10, 0x10);
-	ld9040_dcs_write_seq_static(ctx, MCS_MANPWR, 0x04);
-	ld9040_dcs_write_seq_static(ctx, MCS_POWER_CTRL,
-		0x0a, 0x87, 0x25, 0x6a, 0x44, 0x02, 0x88);
-	ld9040_dcs_write_seq_static(ctx, MCS_ELVSS_ON, 0x0d, 0x00, 0x16);
-	ld9040_dcs_write_seq_static(ctx, MCS_GTCON, 0x09, 0x00, 0x00);
-	ld9040_brightness_set(ctx);
-	ld9040_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
-	ld9040_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
-}
-
-static int ld9040_power_on(struct ld9040 *ctx)
-{
-	int ret;
-
-	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-	if (ret < 0)
-		return ret;
-
-	msleep(ctx->power_on_delay);
-	gpiod_set_value(ctx->reset_gpio, 0);
-	msleep(ctx->reset_delay);
-	gpiod_set_value(ctx->reset_gpio, 1);
-	msleep(ctx->reset_delay);
-
-	return 0;
-}
-
-static int ld9040_power_off(struct ld9040 *ctx)
-{
-	return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-}
-
-static int ld9040_disable(struct drm_panel *panel)
-{
-	return 0;
-}
-
-static int ld9040_unprepare(struct drm_panel *panel)
-{
-	struct ld9040 *ctx = panel_to_ld9040(panel);
-
-	msleep(120);
-	ld9040_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
-	ld9040_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
-	msleep(40);
-
-	ld9040_clear_error(ctx);
-
-	return ld9040_power_off(ctx);
-}
-
-static int ld9040_prepare(struct drm_panel *panel)
-{
-	struct ld9040 *ctx = panel_to_ld9040(panel);
-	int ret;
-
-	ret = ld9040_power_on(ctx);
-	if (ret < 0)
-		return ret;
-
-	ld9040_init(ctx);
-
-	ret = ld9040_clear_error(ctx);
-
-	if (ret < 0)
-		ld9040_unprepare(panel);
-
-	return ret;
-}
-
-static int ld9040_enable(struct drm_panel *panel)
-{
-	return 0;
-}
-
-static int ld9040_get_modes(struct drm_panel *panel)
-{
-	struct drm_connector *connector = panel->connector;
-	struct ld9040 *ctx = panel_to_ld9040(panel);
-	struct drm_display_mode *mode;
-
-	mode = drm_mode_create(connector->dev);
-	if (!mode) {
-		DRM_ERROR("failed to create a new display mode\n");
-		return 0;
-	}
-
-	drm_display_mode_from_videomode(&ctx->vm, mode);
-	mode->width_mm = ctx->width_mm;
-	mode->height_mm = ctx->height_mm;
-	connector->display_info.width_mm = mode->width_mm;
-	connector->display_info.height_mm = mode->height_mm;
-
-	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-	drm_mode_probed_add(connector, mode);
-
-	return 1;
-}
-
-static const struct drm_panel_funcs ld9040_drm_funcs = {
-	.disable = ld9040_disable,
-	.unprepare = ld9040_unprepare,
-	.prepare = ld9040_prepare,
-	.enable = ld9040_enable,
-	.get_modes = ld9040_get_modes,
-};
-
-static int ld9040_parse_dt(struct ld9040 *ctx)
-{
-	struct device *dev = ctx->dev;
-	struct device_node *np = dev->of_node;
-	int ret;
-
-	ret = of_get_videomode(np, &ctx->vm, 0);
-	if (ret < 0)
-		return ret;
-
-	of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay);
-	of_property_read_u32(np, "reset-delay", &ctx->reset_delay);
-	of_property_read_u32(np, "panel-width-mm", &ctx->width_mm);
-	of_property_read_u32(np, "panel-height-mm", &ctx->height_mm);
-
-	return 0;
-}
-
-static int ld9040_probe(struct spi_device *spi)
-{
-	struct device *dev = &spi->dev;
-	struct ld9040 *ctx;
-	int ret;
-
-	ctx = devm_kzalloc(dev, sizeof(struct ld9040), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
-
-	spi_set_drvdata(spi, ctx);
-
-	ctx->dev = dev;
-	ctx->brightness = ARRAY_SIZE(ld9040_gammas) - 1;
-
-	ret = ld9040_parse_dt(ctx);
-	if (ret < 0)
-		return ret;
-
-	ctx->supplies[0].supply = "vdd3";
-	ctx->supplies[1].supply = "vci";
-	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
-				      ctx->supplies);
-	if (ret < 0)
-		return ret;
-
-	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(ctx->reset_gpio)) {
-		dev_err(dev, "cannot get reset-gpios %ld\n",
-			PTR_ERR(ctx->reset_gpio));
-		return PTR_ERR(ctx->reset_gpio);
-	}
-
-	spi->bits_per_word = 9;
-	ret = spi_setup(spi);
-	if (ret < 0) {
-		dev_err(dev, "spi setup failed.\n");
-		return ret;
-	}
-
-	drm_panel_init(&ctx->panel);
-	ctx->panel.dev = dev;
-	ctx->panel.funcs = &ld9040_drm_funcs;
-
-	return drm_panel_add(&ctx->panel);
-}
-
-static int ld9040_remove(struct spi_device *spi)
-{
-	struct ld9040 *ctx = spi_get_drvdata(spi);
-
-	ld9040_power_off(ctx);
-	drm_panel_remove(&ctx->panel);
-
-	return 0;
-}
-
-static const struct of_device_id ld9040_of_match[] = {
-	{ .compatible = "samsung,ld9040" },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, ld9040_of_match);
-
-static struct spi_driver ld9040_driver = {
-	.probe = ld9040_probe,
-	.remove = ld9040_remove,
-	.driver = {
-		.name = "ld9040",
-		.owner = THIS_MODULE,
-		.of_match_table = ld9040_of_match,
-	},
-};
-module_spi_driver(ld9040_driver);
-
-MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>");
-MODULE_DESCRIPTION("ld9040 LCD Driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/panel/panel-s6e8aa0.c b/drivers/gpu/drm/panel/panel-s6e8aa0.c
deleted file mode 100644
index 3005110..0000000
--- a/drivers/gpu/drm/panel/panel-s6e8aa0.c
+++ /dev/null
@@ -1,1067 +0,0 @@
-/*
- * MIPI-DSI based s6e8aa0 AMOLED LCD 5.3 inch panel driver.
- *
- * Copyright (c) 2013 Samsung Electronics Co., Ltd
- *
- * Inki Dae, <inki.dae@samsung.com>
- * Donghwa Lee, <dh09.lee@samsung.com>
- * Joongmock Shin <jmock.shin@samsung.com>
- * Eunchul Kim <chulspro.kim@samsung.com>
- * Tomasz Figa <t.figa@samsung.com>
- * Andrzej Hajda <a.hajda@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <drm/drmP.h>
-#include <drm/drm_mipi_dsi.h>
-#include <drm/drm_panel.h>
-
-#include <linux/gpio/consumer.h>
-#include <linux/regulator/consumer.h>
-
-#include <video/mipi_display.h>
-#include <video/of_videomode.h>
-#include <video/videomode.h>
-
-#define LDI_MTP_LENGTH			24
-#define GAMMA_LEVEL_NUM			25
-#define GAMMA_TABLE_LEN			26
-
-#define PANELCTL_SS_MASK		(1 << 5)
-#define PANELCTL_SS_1_800		(0 << 5)
-#define PANELCTL_SS_800_1		(1 << 5)
-#define PANELCTL_GTCON_MASK		(7 << 2)
-#define PANELCTL_GTCON_110		(6 << 2)
-#define PANELCTL_GTCON_111		(7 << 2)
-
-#define PANELCTL_CLK1_CON_MASK		(7 << 3)
-#define PANELCTL_CLK1_000		(0 << 3)
-#define PANELCTL_CLK1_001		(1 << 3)
-#define PANELCTL_CLK2_CON_MASK		(7 << 0)
-#define PANELCTL_CLK2_000		(0 << 0)
-#define PANELCTL_CLK2_001		(1 << 0)
-
-#define PANELCTL_INT1_CON_MASK		(7 << 3)
-#define PANELCTL_INT1_000		(0 << 3)
-#define PANELCTL_INT1_001		(1 << 3)
-#define PANELCTL_INT2_CON_MASK		(7 << 0)
-#define PANELCTL_INT2_000		(0 << 0)
-#define PANELCTL_INT2_001		(1 << 0)
-
-#define PANELCTL_BICTL_CON_MASK		(7 << 3)
-#define PANELCTL_BICTL_000		(0 << 3)
-#define PANELCTL_BICTL_001		(1 << 3)
-#define PANELCTL_BICTLB_CON_MASK	(7 << 0)
-#define PANELCTL_BICTLB_000		(0 << 0)
-#define PANELCTL_BICTLB_001		(1 << 0)
-
-#define PANELCTL_EM_CLK1_CON_MASK	(7 << 3)
-#define PANELCTL_EM_CLK1_110		(6 << 3)
-#define PANELCTL_EM_CLK1_111		(7 << 3)
-#define PANELCTL_EM_CLK1B_CON_MASK	(7 << 0)
-#define PANELCTL_EM_CLK1B_110		(6 << 0)
-#define PANELCTL_EM_CLK1B_111		(7 << 0)
-
-#define PANELCTL_EM_CLK2_CON_MASK	(7 << 3)
-#define PANELCTL_EM_CLK2_110		(6 << 3)
-#define PANELCTL_EM_CLK2_111		(7 << 3)
-#define PANELCTL_EM_CLK2B_CON_MASK	(7 << 0)
-#define PANELCTL_EM_CLK2B_110		(6 << 0)
-#define PANELCTL_EM_CLK2B_111		(7 << 0)
-
-#define PANELCTL_EM_INT1_CON_MASK	(7 << 3)
-#define PANELCTL_EM_INT1_000		(0 << 3)
-#define PANELCTL_EM_INT1_001		(1 << 3)
-#define PANELCTL_EM_INT2_CON_MASK	(7 << 0)
-#define PANELCTL_EM_INT2_000		(0 << 0)
-#define PANELCTL_EM_INT2_001		(1 << 0)
-
-#define AID_DISABLE			(0x4)
-#define AID_1				(0x5)
-#define AID_2				(0x6)
-#define AID_3				(0x7)
-
-typedef u8 s6e8aa0_gamma_table[GAMMA_TABLE_LEN];
-
-struct s6e8aa0_variant {
-	u8 version;
-	const s6e8aa0_gamma_table *gamma_tables;
-};
-
-struct s6e8aa0 {
-	struct device *dev;
-	struct drm_panel panel;
-
-	struct regulator_bulk_data supplies[2];
-	struct gpio_desc *reset_gpio;
-	u32 power_on_delay;
-	u32 reset_delay;
-	u32 init_delay;
-	bool flip_horizontal;
-	bool flip_vertical;
-	struct videomode vm;
-	u32 width_mm;
-	u32 height_mm;
-
-	u8 version;
-	u8 id;
-	const struct s6e8aa0_variant *variant;
-	int brightness;
-
-	/* This field is tested by functions directly accessing DSI bus before
-	 * transfer, transfer is skipped if it is set. In case of transfer
-	 * failure or unexpected response the field is set to error value.
-	 * Such construct allows to eliminate many checks in higher level
-	 * functions.
-	 */
-	int error;
-};
-
-static inline struct s6e8aa0 *panel_to_s6e8aa0(struct drm_panel *panel)
-{
-	return container_of(panel, struct s6e8aa0, panel);
-}
-
-static int s6e8aa0_clear_error(struct s6e8aa0 *ctx)
-{
-	int ret = ctx->error;
-
-	ctx->error = 0;
-	return ret;
-}
-
-static void s6e8aa0_dcs_write(struct s6e8aa0 *ctx, const void *data, size_t len)
-{
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-	ssize_t ret;
-
-	if (ctx->error < 0)
-		return;
-
-	ret = mipi_dsi_dcs_write_buffer(dsi, data, len);
-	if (ret < 0) {
-		dev_err(ctx->dev, "error %zd writing dcs seq: %*ph\n", ret,
-			(int)len, data);
-		ctx->error = ret;
-	}
-}
-
-static int s6e8aa0_dcs_read(struct s6e8aa0 *ctx, u8 cmd, void *data, size_t len)
-{
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-	int ret;
-
-	if (ctx->error < 0)
-		return ctx->error;
-
-	ret = mipi_dsi_dcs_read(dsi, cmd, data, len);
-	if (ret < 0) {
-		dev_err(ctx->dev, "error %d reading dcs seq(%#x)\n", ret, cmd);
-		ctx->error = ret;
-	}
-
-	return ret;
-}
-
-#define s6e8aa0_dcs_write_seq(ctx, seq...) \
-({\
-	const u8 d[] = { seq };\
-	BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, "DCS sequence too big for stack");\
-	s6e8aa0_dcs_write(ctx, d, ARRAY_SIZE(d));\
-})
-
-#define s6e8aa0_dcs_write_seq_static(ctx, seq...) \
-({\
-	static const u8 d[] = { seq };\
-	s6e8aa0_dcs_write(ctx, d, ARRAY_SIZE(d));\
-})
-
-static void s6e8aa0_apply_level_1_key(struct s6e8aa0 *ctx)
-{
-	s6e8aa0_dcs_write_seq_static(ctx, 0xf0, 0x5a, 0x5a);
-}
-
-static void s6e8aa0_panel_cond_set_v142(struct s6e8aa0 *ctx)
-{
-	static const u8 aids[] = {
-		0x04, 0x04, 0x04, 0x04, 0x04, 0x60, 0x80, 0xA0
-	};
-	u8 aid = aids[ctx->id >> 5];
-	u8 cfg = 0x3d;
-	u8 clk_con = 0xc8;
-	u8 int_con = 0x08;
-	u8 bictl_con = 0x48;
-	u8 em_clk1_con = 0xff;
-	u8 em_clk2_con = 0xff;
-	u8 em_int_con = 0xc8;
-
-	if (ctx->flip_vertical) {
-		/* GTCON */
-		cfg &= ~(PANELCTL_GTCON_MASK);
-		cfg |= (PANELCTL_GTCON_110);
-	}
-
-	if (ctx->flip_horizontal) {
-		/* SS */
-		cfg &= ~(PANELCTL_SS_MASK);
-		cfg |= (PANELCTL_SS_1_800);
-	}
-
-	if (ctx->flip_horizontal || ctx->flip_vertical) {
-		/* CLK1,2_CON */
-		clk_con &= ~(PANELCTL_CLK1_CON_MASK |
-			PANELCTL_CLK2_CON_MASK);
-		clk_con |= (PANELCTL_CLK1_000 | PANELCTL_CLK2_001);
-
-		/* INT1,2_CON */
-		int_con &= ~(PANELCTL_INT1_CON_MASK |
-			PANELCTL_INT2_CON_MASK);
-		int_con |= (PANELCTL_INT1_000 | PANELCTL_INT2_001);
-
-		/* BICTL,B_CON */
-		bictl_con &= ~(PANELCTL_BICTL_CON_MASK |
-			PANELCTL_BICTLB_CON_MASK);
-		bictl_con |= (PANELCTL_BICTL_000 |
-			PANELCTL_BICTLB_001);
-
-		/* EM_CLK1,1B_CON */
-		em_clk1_con &= ~(PANELCTL_EM_CLK1_CON_MASK |
-			PANELCTL_EM_CLK1B_CON_MASK);
-		em_clk1_con |= (PANELCTL_EM_CLK1_110 |
-			PANELCTL_EM_CLK1B_110);
-
-		/* EM_CLK2,2B_CON */
-		em_clk2_con &= ~(PANELCTL_EM_CLK2_CON_MASK |
-			PANELCTL_EM_CLK2B_CON_MASK);
-		em_clk2_con |= (PANELCTL_EM_CLK2_110 |
-			PANELCTL_EM_CLK2B_110);
-
-		/* EM_INT1,2_CON */
-		em_int_con &= ~(PANELCTL_EM_INT1_CON_MASK |
-			PANELCTL_EM_INT2_CON_MASK);
-		em_int_con |= (PANELCTL_EM_INT1_000 |
-			PANELCTL_EM_INT2_001);
-	}
-
-	s6e8aa0_dcs_write_seq(ctx,
-		0xf8, cfg, 0x35, 0x00, 0x00, 0x00, 0x93, 0x00,
-		0x3c, 0x78, 0x08, 0x27, 0x7d, 0x3f, 0x00, 0x00,
-		0x00, 0x20, aid, 0x08, 0x6e, 0x00, 0x00, 0x00,
-		0x02, 0x07, 0x07, 0x23, 0x23, 0xc0, clk_con, int_con,
-		bictl_con, 0xc1, 0x00, 0xc1, em_clk1_con, em_clk2_con,
-		em_int_con);
-}
-
-static void s6e8aa0_panel_cond_set(struct s6e8aa0 *ctx)
-{
-	if (ctx->version < 142)
-		s6e8aa0_dcs_write_seq_static(ctx,
-			0xf8, 0x19, 0x35, 0x00, 0x00, 0x00, 0x94, 0x00,
-			0x3c, 0x78, 0x10, 0x27, 0x08, 0x6e, 0x00, 0x00,
-			0x00, 0x00, 0x04, 0x08, 0x6e, 0x00, 0x00, 0x00,
-			0x00, 0x07, 0x07, 0x23, 0x6e, 0xc0, 0xc1, 0x01,
-			0x81, 0xc1, 0x00, 0xc3, 0xf6, 0xf6, 0xc1
-		);
-	else
-		s6e8aa0_panel_cond_set_v142(ctx);
-}
-
-static void s6e8aa0_display_condition_set(struct s6e8aa0 *ctx)
-{
-	s6e8aa0_dcs_write_seq_static(ctx, 0xf2, 0x80, 0x03, 0x0d);
-}
-
-static void s6e8aa0_etc_source_control(struct s6e8aa0 *ctx)
-{
-	s6e8aa0_dcs_write_seq_static(ctx, 0xf6, 0x00, 0x02, 0x00);
-}
-
-static void s6e8aa0_etc_pentile_control(struct s6e8aa0 *ctx)
-{
-	static const u8 pent32[] = {
-		0xb6, 0x0c, 0x02, 0x03, 0x32, 0xc0, 0x44, 0x44, 0xc0, 0x00
-	};
-
-	static const u8 pent142[] = {
-		0xb6, 0x0c, 0x02, 0x03, 0x32, 0xff, 0x44, 0x44, 0xc0, 0x00
-	};
-
-	if (ctx->version < 142)
-		s6e8aa0_dcs_write(ctx, pent32, ARRAY_SIZE(pent32));
-	else
-		s6e8aa0_dcs_write(ctx, pent142, ARRAY_SIZE(pent142));
-}
-
-static void s6e8aa0_etc_power_control(struct s6e8aa0 *ctx)
-{
-	static const u8 pwr142[] = {
-		0xf4, 0xcf, 0x0a, 0x12, 0x10, 0x1e, 0x33, 0x02
-	};
-
-	static const u8 pwr32[] = {
-		0xf4, 0xcf, 0x0a, 0x15, 0x10, 0x19, 0x33, 0x02
-	};
-
-	if (ctx->version < 142)
-		s6e8aa0_dcs_write(ctx, pwr32, ARRAY_SIZE(pwr32));
-	else
-		s6e8aa0_dcs_write(ctx, pwr142, ARRAY_SIZE(pwr142));
-}
-
-static void s6e8aa0_etc_elvss_control(struct s6e8aa0 *ctx)
-{
-	u8 id = ctx->id ? 0 : 0x95;
-
-	s6e8aa0_dcs_write_seq(ctx, 0xb1, 0x04, id);
-}
-
-static void s6e8aa0_elvss_nvm_set_v142(struct s6e8aa0 *ctx)
-{
-	u8 br;
-
-	switch (ctx->brightness) {
-	case 0 ... 6: /* 30cd ~ 100cd */
-		br = 0xdf;
-		break;
-	case 7 ... 11: /* 120cd ~ 150cd */
-		br = 0xdd;
-		break;
-	case 12 ... 15: /* 180cd ~ 210cd */
-	default:
-		br = 0xd9;
-		break;
-	case 16 ... 24: /* 240cd ~ 300cd */
-		br = 0xd0;
-		break;
-	}
-
-	s6e8aa0_dcs_write_seq(ctx, 0xd9, 0x14, 0x40, 0x0c, 0xcb, 0xce, 0x6e,
-		0xc4, 0x0f, 0x40, 0x41, br, 0x00, 0x60, 0x19);
-}
-
-static void s6e8aa0_elvss_nvm_set(struct s6e8aa0 *ctx)
-{
-	if (ctx->version < 142)
-		s6e8aa0_dcs_write_seq_static(ctx,
-			0xd9, 0x14, 0x40, 0x0c, 0xcb, 0xce, 0x6e, 0xc4, 0x07,
-			0x40, 0x41, 0xc1, 0x00, 0x60, 0x19);
-	else
-		s6e8aa0_elvss_nvm_set_v142(ctx);
-};
-
-static void s6e8aa0_apply_level_2_key(struct s6e8aa0 *ctx)
-{
-	s6e8aa0_dcs_write_seq_static(ctx, 0xfc, 0x5a, 0x5a);
-}
-
-static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v142[GAMMA_LEVEL_NUM] = {
-	{
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x62, 0x55, 0x55,
-		0xaf, 0xb1, 0xb1, 0xbd, 0xce, 0xb7, 0x9a, 0xb1,
-		0x90, 0xb2, 0xc4, 0xae, 0x00, 0x60, 0x00, 0x40,
-		0x00, 0x70,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x74, 0x68, 0x69,
-		0xb8, 0xc1, 0xb7, 0xbd, 0xcd, 0xb8, 0x93, 0xab,
-		0x88, 0xb4, 0xc4, 0xb1, 0x00, 0x6b, 0x00, 0x4d,
-		0x00, 0x7d,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x95, 0x8a, 0x89,
-		0xb4, 0xc6, 0xb2, 0xc5, 0xd2, 0xbf, 0x90, 0xa8,
-		0x85, 0xb5, 0xc4, 0xb3, 0x00, 0x7b, 0x00, 0x5d,
-		0x00, 0x8f,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9f, 0x98, 0x92,
-		0xb3, 0xc4, 0xb0, 0xbc, 0xcc, 0xb4, 0x91, 0xa6,
-		0x87, 0xb5, 0xc5, 0xb4, 0x00, 0x87, 0x00, 0x6a,
-		0x00, 0x9e,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x99, 0x93, 0x8b,
-		0xb2, 0xc2, 0xb0, 0xbd, 0xce, 0xb4, 0x90, 0xa6,
-		0x87, 0xb3, 0xc3, 0xb2, 0x00, 0x8d, 0x00, 0x70,
-		0x00, 0xa4,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xa5, 0x99,
-		0xb2, 0xc2, 0xb0, 0xbb, 0xcd, 0xb1, 0x93, 0xa7,
-		0x8a, 0xb2, 0xc1, 0xb0, 0x00, 0x92, 0x00, 0x75,
-		0x00, 0xaa,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa0, 0xa0, 0x93,
-		0xb6, 0xc4, 0xb4, 0xb5, 0xc8, 0xaa, 0x94, 0xa9,
-		0x8c, 0xb2, 0xc0, 0xb0, 0x00, 0x97, 0x00, 0x7a,
-		0x00, 0xaf,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xa7, 0x96,
-		0xb3, 0xc2, 0xb0, 0xba, 0xcb, 0xb0, 0x94, 0xa8,
-		0x8c, 0xb0, 0xbf, 0xaf, 0x00, 0x9f, 0x00, 0x83,
-		0x00, 0xb9,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9d, 0xa2, 0x90,
-		0xb6, 0xc5, 0xb3, 0xb8, 0xc9, 0xae, 0x94, 0xa8,
-		0x8d, 0xaf, 0xbd, 0xad, 0x00, 0xa4, 0x00, 0x88,
-		0x00, 0xbf,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa6, 0xac, 0x97,
-		0xb4, 0xc4, 0xb1, 0xbb, 0xcb, 0xb2, 0x93, 0xa7,
-		0x8d, 0xae, 0xbc, 0xad, 0x00, 0xa7, 0x00, 0x8c,
-		0x00, 0xc3,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa2, 0xa9, 0x93,
-		0xb6, 0xc5, 0xb2, 0xba, 0xc9, 0xb0, 0x93, 0xa7,
-		0x8d, 0xae, 0xbb, 0xac, 0x00, 0xab, 0x00, 0x90,
-		0x00, 0xc8,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9e, 0xa6, 0x8f,
-		0xb7, 0xc6, 0xb3, 0xb8, 0xc8, 0xb0, 0x93, 0xa6,
-		0x8c, 0xae, 0xbb, 0xad, 0x00, 0xae, 0x00, 0x93,
-		0x00, 0xcc,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xab, 0xb4, 0x9c,
-		0xb3, 0xc3, 0xaf, 0xb7, 0xc7, 0xaf, 0x93, 0xa6,
-		0x8c, 0xaf, 0xbc, 0xad, 0x00, 0xb1, 0x00, 0x97,
-		0x00, 0xcf,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa6, 0xb1, 0x98,
-		0xb1, 0xc2, 0xab, 0xba, 0xc9, 0xb2, 0x93, 0xa6,
-		0x8d, 0xae, 0xba, 0xab, 0x00, 0xb5, 0x00, 0x9b,
-		0x00, 0xd4,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xae, 0x94,
-		0xb2, 0xc3, 0xac, 0xbb, 0xca, 0xb4, 0x91, 0xa4,
-		0x8a, 0xae, 0xba, 0xac, 0x00, 0xb8, 0x00, 0x9e,
-		0x00, 0xd8,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xab, 0xb7, 0x9c,
-		0xae, 0xc0, 0xa9, 0xba, 0xc9, 0xb3, 0x92, 0xa5,
-		0x8b, 0xad, 0xb9, 0xab, 0x00, 0xbb, 0x00, 0xa1,
-		0x00, 0xdc,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb4, 0x97,
-		0xb0, 0xc1, 0xaa, 0xb9, 0xc8, 0xb2, 0x92, 0xa5,
-		0x8c, 0xae, 0xb9, 0xab, 0x00, 0xbe, 0x00, 0xa4,
-		0x00, 0xdf,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xb0, 0x94,
-		0xb0, 0xc2, 0xab, 0xbb, 0xc9, 0xb3, 0x91, 0xa4,
-		0x8b, 0xad, 0xb8, 0xaa, 0x00, 0xc1, 0x00, 0xa8,
-		0x00, 0xe2,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xb0, 0x94,
-		0xae, 0xbf, 0xa8, 0xb9, 0xc8, 0xb3, 0x92, 0xa4,
-		0x8b, 0xad, 0xb7, 0xa9, 0x00, 0xc4, 0x00, 0xab,
-		0x00, 0xe6,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb6, 0x98,
-		0xaf, 0xc0, 0xa8, 0xb8, 0xc7, 0xb2, 0x93, 0xa5,
-		0x8d, 0xad, 0xb7, 0xa9, 0x00, 0xc7, 0x00, 0xae,
-		0x00, 0xe9,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb3, 0x95,
-		0xaf, 0xc1, 0xa9, 0xb9, 0xc8, 0xb3, 0x92, 0xa4,
-		0x8b, 0xad, 0xb7, 0xaa, 0x00, 0xc9, 0x00, 0xb0,
-		0x00, 0xec,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb3, 0x95,
-		0xac, 0xbe, 0xa6, 0xbb, 0xc9, 0xb4, 0x90, 0xa3,
-		0x8a, 0xad, 0xb7, 0xa9, 0x00, 0xcc, 0x00, 0xb4,
-		0x00, 0xf0,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa0, 0xb0, 0x91,
-		0xae, 0xc0, 0xa6, 0xba, 0xc8, 0xb4, 0x91, 0xa4,
-		0x8b, 0xad, 0xb7, 0xa9, 0x00, 0xcf, 0x00, 0xb7,
-		0x00, 0xf3,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb8, 0x98,
-		0xab, 0xbd, 0xa4, 0xbb, 0xc9, 0xb5, 0x91, 0xa3,
-		0x8b, 0xac, 0xb6, 0xa8, 0x00, 0xd1, 0x00, 0xb9,
-		0x00, 0xf6,
-	}, {
-		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb5, 0x95,
-		0xa9, 0xbc, 0xa1, 0xbb, 0xc9, 0xb5, 0x91, 0xa3,
-		0x8a, 0xad, 0xb6, 0xa8, 0x00, 0xd6, 0x00, 0xbf,
-		0x00, 0xfc,
-	},
-};
-
-static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v96[GAMMA_LEVEL_NUM] = {
-	{
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
-		0xdf, 0x1f, 0xd7, 0xdc, 0xb7, 0xe1, 0xc0, 0xaf,
-		0xc4, 0xd2, 0xd0, 0xcf, 0x00, 0x4d, 0x00, 0x40,
-		0x00, 0x5f,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
-		0xd5, 0x35, 0xcf, 0xdc, 0xc1, 0xe1, 0xbf, 0xb3,
-		0xc1, 0xd2, 0xd1, 0xce,	0x00, 0x53, 0x00, 0x46,
-		0x00, 0x67,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
-		0xd2, 0x64, 0xcf, 0xdb, 0xc6, 0xe1, 0xbd, 0xb3,
-		0xbd, 0xd2, 0xd2, 0xce,	0x00, 0x59, 0x00, 0x4b,
-		0x00, 0x6e,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
-		0xd0, 0x7c, 0xcf, 0xdb, 0xc9, 0xe0, 0xbc, 0xb4,
-		0xbb, 0xcf, 0xd1, 0xcc, 0x00, 0x5f, 0x00, 0x50,
-		0x00, 0x75,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
-		0xd0, 0x8e, 0xd1, 0xdb, 0xcc, 0xdf, 0xbb, 0xb6,
-		0xb9, 0xd0, 0xd1, 0xcd,	0x00, 0x63, 0x00, 0x54,
-		0x00, 0x7a,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
-		0xd1, 0x9e, 0xd5, 0xda, 0xcd, 0xdd, 0xbb, 0xb7,
-		0xb9, 0xce, 0xce, 0xc9,	0x00, 0x68, 0x00, 0x59,
-		0x00, 0x81,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
-		0xd0, 0xa5, 0xd6, 0xda, 0xcf, 0xdd, 0xbb, 0xb7,
-		0xb8, 0xcc, 0xcd, 0xc7,	0x00, 0x6c, 0x00, 0x5c,
-		0x00, 0x86,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xfe,
-		0xd0, 0xae, 0xd7, 0xd9, 0xd0, 0xdb, 0xb9, 0xb6,
-		0xb5, 0xca, 0xcc, 0xc5,	0x00, 0x74, 0x00, 0x63,
-		0x00, 0x90,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xf9,
-		0xcf, 0xb0, 0xd6, 0xd9, 0xd1, 0xdb, 0xb9, 0xb6,
-		0xb4, 0xca, 0xcb, 0xc5,	0x00, 0x77, 0x00, 0x66,
-		0x00, 0x94,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xf7,
-		0xcf, 0xb3, 0xd7, 0xd8, 0xd1, 0xd9, 0xb7, 0xb6,
-		0xb3, 0xc9, 0xca, 0xc3,	0x00, 0x7b, 0x00, 0x69,
-		0x00, 0x99,
-
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xfd, 0x2f, 0xf7,
-		0xdf, 0xb5, 0xd6, 0xd8, 0xd1, 0xd8, 0xb6, 0xb5,
-		0xb2, 0xca, 0xcb, 0xc4,	0x00, 0x7e, 0x00, 0x6c,
-		0x00, 0x9d,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xfa, 0x2f, 0xf5,
-		0xce, 0xb6, 0xd5, 0xd7, 0xd2, 0xd8, 0xb6, 0xb4,
-		0xb0, 0xc7, 0xc9, 0xc1,	0x00, 0x84, 0x00, 0x71,
-		0x00, 0xa5,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf7, 0x2f, 0xf2,
-		0xce, 0xb9, 0xd5, 0xd8, 0xd2, 0xd8, 0xb4, 0xb4,
-		0xaf, 0xc7, 0xc9, 0xc1,	0x00, 0x87, 0x00, 0x73,
-		0x00, 0xa8,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf5, 0x2f, 0xf0,
-		0xdf, 0xba, 0xd5, 0xd7, 0xd2, 0xd7, 0xb4, 0xb4,
-		0xaf, 0xc5, 0xc7, 0xbf,	0x00, 0x8a, 0x00, 0x76,
-		0x00, 0xac,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf2, 0x2f, 0xed,
-		0xcE, 0xbb, 0xd4, 0xd6, 0xd2, 0xd6, 0xb5, 0xb4,
-		0xaF, 0xc5, 0xc7, 0xbf,	0x00, 0x8c, 0x00, 0x78,
-		0x00, 0xaf,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xef, 0x2f, 0xeb,
-		0xcd, 0xbb, 0xd2, 0xd7, 0xd3, 0xd6, 0xb3, 0xb4,
-		0xae, 0xc5, 0xc6, 0xbe,	0x00, 0x91, 0x00, 0x7d,
-		0x00, 0xb6,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xee, 0x2f, 0xea,
-		0xce, 0xbd, 0xd4, 0xd6, 0xd2, 0xd5, 0xb2, 0xb3,
-		0xad, 0xc3, 0xc4, 0xbb,	0x00, 0x94, 0x00, 0x7f,
-		0x00, 0xba,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xec, 0x2f, 0xe8,
-		0xce, 0xbe, 0xd3, 0xd6, 0xd3, 0xd5, 0xb2, 0xb2,
-		0xac, 0xc3, 0xc5, 0xbc,	0x00, 0x96, 0x00, 0x81,
-		0x00, 0xbd,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xeb, 0x2f, 0xe7,
-		0xce, 0xbf, 0xd3, 0xd6, 0xd2, 0xd5, 0xb1, 0xb2,
-		0xab, 0xc2, 0xc4, 0xbb,	0x00, 0x99, 0x00, 0x83,
-		0x00, 0xc0,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xef, 0x5f, 0xe9,
-		0xca, 0xbf, 0xd3, 0xd5, 0xd2, 0xd4, 0xb2, 0xb2,
-		0xab, 0xc1, 0xc4, 0xba,	0x00, 0x9b, 0x00, 0x85,
-		0x00, 0xc3,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xea, 0x5f, 0xe8,
-		0xee, 0xbf, 0xd2, 0xd5, 0xd2, 0xd4, 0xb1, 0xb2,
-		0xab, 0xc1, 0xc2, 0xb9,	0x00, 0x9D, 0x00, 0x87,
-		0x00, 0xc6,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe9, 0x5f, 0xe7,
-		0xcd, 0xbf, 0xd2, 0xd6, 0xd2, 0xd4, 0xb1, 0xb2,
-		0xab, 0xbe, 0xc0, 0xb7,	0x00, 0xa1, 0x00, 0x8a,
-		0x00, 0xca,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe8, 0x61, 0xe6,
-		0xcd, 0xbf, 0xd1, 0xd6, 0xd3, 0xd4, 0xaf, 0xb0,
-		0xa9, 0xbe, 0xc1, 0xb7,	0x00, 0xa3, 0x00, 0x8b,
-		0x00, 0xce,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe8, 0x62, 0xe5,
-		0xcc, 0xc0, 0xd0, 0xd6, 0xd2, 0xd4, 0xaf, 0xb1,
-		0xa9, 0xbd, 0xc0, 0xb6,	0x00, 0xa5, 0x00, 0x8d,
-		0x00, 0xd0,
-	}, {
-		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe7, 0x7f, 0xe3,
-		0xcc, 0xc1, 0xd0, 0xd5, 0xd3, 0xd3, 0xae, 0xaf,
-		0xa8, 0xbe, 0xc0, 0xb7,	0x00, 0xa8, 0x00, 0x90,
-		0x00, 0xd3,
-	}
-};
-
-static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v32[GAMMA_LEVEL_NUM] = {
-	{
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0x72, 0x5e, 0x6b,
-		0xa1, 0xa7, 0x9a, 0xb4, 0xcb, 0xb8, 0x92, 0xac,
-		0x97, 0xb4, 0xc3, 0xb5, 0x00, 0x4e, 0x00, 0x37,
-		0x00, 0x58,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0x85, 0x71, 0x7d,
-		0xa6, 0xb6, 0xa1, 0xb5, 0xca, 0xba, 0x93, 0xac,
-		0x98, 0xb2, 0xc0, 0xaf, 0x00, 0x59, 0x00, 0x43,
-		0x00, 0x64,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa4, 0x94, 0x9e,
-		0xa0, 0xbb, 0x9c, 0xc3, 0xd2, 0xc6, 0x93, 0xaa,
-		0x95, 0xb7, 0xc2, 0xb4, 0x00, 0x65, 0x00, 0x50,
-		0x00, 0x74,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xa1, 0xa6,
-		0xa0, 0xb9, 0x9b, 0xc3, 0xd1, 0xc8, 0x90, 0xa6,
-		0x90, 0xbb, 0xc3, 0xb7, 0x00, 0x6f, 0x00, 0x5b,
-		0x00, 0x80,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa6, 0x9d, 0x9f,
-		0x9f, 0xb8, 0x9a, 0xc7, 0xd5, 0xcc, 0x90, 0xa5,
-		0x8f, 0xb8, 0xc1, 0xb6, 0x00, 0x74, 0x00, 0x60,
-		0x00, 0x85,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb3, 0xae, 0xae,
-		0x9e, 0xb7, 0x9a, 0xc8, 0xd6, 0xce, 0x91, 0xa6,
-		0x90, 0xb6, 0xc0, 0xb3, 0x00, 0x78, 0x00, 0x65,
-		0x00, 0x8a,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xa9, 0xa8,
-		0xa3, 0xb9, 0x9e, 0xc4, 0xd3, 0xcb, 0x94, 0xa6,
-		0x90, 0xb6, 0xbf, 0xb3, 0x00, 0x7c, 0x00, 0x69,
-		0x00, 0x8e,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xaf, 0xaf, 0xa9,
-		0xa5, 0xbc, 0xa2, 0xc7, 0xd5, 0xcd, 0x93, 0xa5,
-		0x8f, 0xb4, 0xbd, 0xb1, 0x00, 0x83, 0x00, 0x70,
-		0x00, 0x96,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xab, 0xa3,
-		0xaa, 0xbf, 0xa7, 0xc5, 0xd3, 0xcb, 0x93, 0xa5,
-		0x8f, 0xb2, 0xbb, 0xb0, 0x00, 0x86, 0x00, 0x74,
-		0x00, 0x9b,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb1, 0xb5, 0xab,
-		0xab, 0xc0, 0xa9, 0xc7, 0xd4, 0xcc, 0x94, 0xa4,
-		0x8f, 0xb1, 0xbb, 0xaf, 0x00, 0x8a, 0x00, 0x77,
-		0x00, 0x9e,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb2, 0xa7,
-		0xae, 0xc2, 0xab, 0xc5, 0xd3, 0xca, 0x93, 0xa4,
-		0x8f, 0xb1, 0xba, 0xae, 0x00, 0x8d, 0x00, 0x7b,
-		0x00, 0xa2,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xaf, 0xa3,
-		0xb0, 0xc3, 0xae, 0xc4, 0xd1, 0xc8, 0x93, 0xa4,
-		0x8f, 0xb1, 0xba, 0xaf, 0x00, 0x8f, 0x00, 0x7d,
-		0x00, 0xa5,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb4, 0xbd, 0xaf,
-		0xae, 0xc1, 0xab, 0xc2, 0xd0, 0xc6, 0x94, 0xa4,
-		0x8f, 0xb1, 0xba, 0xaf, 0x00, 0x92, 0x00, 0x80,
-		0x00, 0xa8,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xb9, 0xac,
-		0xad, 0xc1, 0xab, 0xc4, 0xd1, 0xc7, 0x95, 0xa4,
-		0x90, 0xb0, 0xb9, 0xad, 0x00, 0x95, 0x00, 0x84,
-		0x00, 0xac,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb6, 0xa7,
-		0xaf, 0xc2, 0xae, 0xc5, 0xd1, 0xc7, 0x93, 0xa3,
-		0x8e, 0xb0, 0xb9, 0xad, 0x00, 0x98, 0x00, 0x86,
-		0x00, 0xaf,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb4, 0xbf, 0xaf,
-		0xad, 0xc1, 0xab, 0xc3, 0xd0, 0xc6, 0x94, 0xa3,
-		0x8f, 0xaf, 0xb8, 0xac, 0x00, 0x9a, 0x00, 0x89,
-		0x00, 0xb2,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xbc, 0xac,
-		0xaf, 0xc2, 0xad, 0xc2, 0xcf, 0xc4, 0x94, 0xa3,
-		0x90, 0xaf, 0xb8, 0xad, 0x00, 0x9c, 0x00, 0x8b,
-		0x00, 0xb5,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb9, 0xa7,
-		0xb1, 0xc4, 0xaf, 0xc3, 0xcf, 0xc5, 0x94, 0xa3,
-		0x8f, 0xae, 0xb7, 0xac, 0x00, 0x9f, 0x00, 0x8e,
-		0x00, 0xb8,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb9, 0xa7,
-		0xaf, 0xc2, 0xad, 0xc1, 0xce, 0xc3, 0x95, 0xa3,
-		0x90, 0xad, 0xb6, 0xab, 0x00, 0xa2, 0x00, 0x91,
-		0x00, 0xbb,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb1, 0xbe, 0xac,
-		0xb1, 0xc4, 0xaf, 0xc1, 0xcd, 0xc1, 0x95, 0xa4,
-		0x91, 0xad, 0xb6, 0xab, 0x00, 0xa4, 0x00, 0x93,
-		0x00, 0xbd,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbb, 0xa8,
-		0xb3, 0xc5, 0xb2, 0xc1, 0xcd, 0xc2, 0x95, 0xa3,
-		0x90, 0xad, 0xb6, 0xab, 0x00, 0xa6, 0x00, 0x95,
-		0x00, 0xc0,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbb, 0xa8,
-		0xb0, 0xc3, 0xaf, 0xc2, 0xce, 0xc2, 0x94, 0xa2,
-		0x90, 0xac, 0xb6, 0xab, 0x00, 0xa8, 0x00, 0x98,
-		0x00, 0xc3,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xb8, 0xa5,
-		0xb3, 0xc5, 0xb2, 0xc1, 0xcc, 0xc0, 0x95, 0xa2,
-		0x90, 0xad, 0xb6, 0xab, 0x00, 0xaa, 0x00, 0x9a,
-		0x00, 0xc5,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xc0, 0xac,
-		0xb0, 0xc3, 0xaf, 0xc1, 0xcd, 0xc1, 0x95, 0xa2,
-		0x90, 0xac, 0xb5, 0xa9, 0x00, 0xac, 0x00, 0x9c,
-		0x00, 0xc8,
-	}, {
-		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbd, 0xa8,
-		0xaf, 0xc2, 0xaf, 0xc1, 0xcc, 0xc0, 0x95, 0xa2,
-		0x90, 0xac, 0xb5, 0xaa, 0x00, 0xb1, 0x00, 0xa1,
-		0x00, 0xcc,
-	},
-};
-
-static const struct s6e8aa0_variant s6e8aa0_variants[] = {
-	{
-		.version = 32,
-		.gamma_tables = s6e8aa0_gamma_tables_v32,
-	}, {
-		.version = 96,
-		.gamma_tables = s6e8aa0_gamma_tables_v96,
-	}, {
-		.version = 142,
-		.gamma_tables = s6e8aa0_gamma_tables_v142,
-	}, {
-		.version = 210,
-		.gamma_tables = s6e8aa0_gamma_tables_v142,
-	}
-};
-
-static void s6e8aa0_brightness_set(struct s6e8aa0 *ctx)
-{
-	const u8 *gamma;
-
-	if (ctx->error)
-		return;
-
-	gamma = ctx->variant->gamma_tables[ctx->brightness];
-
-	if (ctx->version >= 142)
-		s6e8aa0_elvss_nvm_set(ctx);
-
-	s6e8aa0_dcs_write(ctx, gamma, GAMMA_TABLE_LEN);
-
-	/* update gamma table. */
-	s6e8aa0_dcs_write_seq_static(ctx, 0xf7, 0x03);
-}
-
-static void s6e8aa0_panel_init(struct s6e8aa0 *ctx)
-{
-	s6e8aa0_apply_level_1_key(ctx);
-	s6e8aa0_apply_level_2_key(ctx);
-	msleep(20);
-
-	s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
-	msleep(40);
-
-	s6e8aa0_panel_cond_set(ctx);
-	s6e8aa0_display_condition_set(ctx);
-	s6e8aa0_brightness_set(ctx);
-	s6e8aa0_etc_source_control(ctx);
-	s6e8aa0_etc_pentile_control(ctx);
-	s6e8aa0_elvss_nvm_set(ctx);
-	s6e8aa0_etc_power_control(ctx);
-	s6e8aa0_etc_elvss_control(ctx);
-	msleep(ctx->init_delay);
-}
-
-static void s6e8aa0_set_maximum_return_packet_size(struct s6e8aa0 *ctx,
-						   u16 size)
-{
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-	int ret;
-
-	if (ctx->error < 0)
-		return;
-
-	ret = mipi_dsi_set_maximum_return_packet_size(dsi, size);
-	if (ret < 0) {
-		dev_err(ctx->dev,
-			"error %d setting maximum return packet size to %d\n",
-			ret, size);
-		ctx->error = ret;
-	}
-}
-
-static void s6e8aa0_read_mtp_id(struct s6e8aa0 *ctx)
-{
-	u8 id[3];
-	int ret, i;
-
-	ret = s6e8aa0_dcs_read(ctx, 0xd1, id, ARRAY_SIZE(id));
-	if (ret < ARRAY_SIZE(id) || id[0] == 0x00) {
-		dev_err(ctx->dev, "read id failed\n");
-		ctx->error = -EIO;
-		return;
-	}
-
-	dev_info(ctx->dev, "ID: 0x%2x, 0x%2x, 0x%2x\n", id[0], id[1], id[2]);
-
-	for (i = 0; i < ARRAY_SIZE(s6e8aa0_variants); ++i) {
-		if (id[1] == s6e8aa0_variants[i].version)
-			break;
-	}
-	if (i >= ARRAY_SIZE(s6e8aa0_variants)) {
-		dev_err(ctx->dev, "unsupported display version %d\n", id[1]);
-		ctx->error = -EINVAL;
-		return;
-	}
-
-	ctx->variant = &s6e8aa0_variants[i];
-	ctx->version = id[1];
-	ctx->id = id[2];
-}
-
-static void s6e8aa0_set_sequence(struct s6e8aa0 *ctx)
-{
-	s6e8aa0_set_maximum_return_packet_size(ctx, 3);
-	s6e8aa0_read_mtp_id(ctx);
-	s6e8aa0_panel_init(ctx);
-	s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
-}
-
-static int s6e8aa0_power_on(struct s6e8aa0 *ctx)
-{
-	int ret;
-
-	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-	if (ret < 0)
-		return ret;
-
-	msleep(ctx->power_on_delay);
-
-	gpiod_set_value(ctx->reset_gpio, 0);
-	usleep_range(10000, 11000);
-	gpiod_set_value(ctx->reset_gpio, 1);
-
-	msleep(ctx->reset_delay);
-
-	return 0;
-}
-
-static int s6e8aa0_power_off(struct s6e8aa0 *ctx)
-{
-	return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
-}
-
-static int s6e8aa0_disable(struct drm_panel *panel)
-{
-	return 0;
-}
-
-static int s6e8aa0_unprepare(struct drm_panel *panel)
-{
-	struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel);
-
-	s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
-	s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
-	msleep(40);
-
-	s6e8aa0_clear_error(ctx);
-
-	return s6e8aa0_power_off(ctx);
-}
-
-static int s6e8aa0_prepare(struct drm_panel *panel)
-{
-	struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel);
-	int ret;
-
-	ret = s6e8aa0_power_on(ctx);
-	if (ret < 0)
-		return ret;
-
-	s6e8aa0_set_sequence(ctx);
-	ret = ctx->error;
-
-	if (ret < 0)
-		s6e8aa0_unprepare(panel);
-
-	return ret;
-}
-
-static int s6e8aa0_enable(struct drm_panel *panel)
-{
-	return 0;
-}
-
-static int s6e8aa0_get_modes(struct drm_panel *panel)
-{
-	struct drm_connector *connector = panel->connector;
-	struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel);
-	struct drm_display_mode *mode;
-
-	mode = drm_mode_create(connector->dev);
-	if (!mode) {
-		DRM_ERROR("failed to create a new display mode\n");
-		return 0;
-	}
-
-	drm_display_mode_from_videomode(&ctx->vm, mode);
-	mode->width_mm = ctx->width_mm;
-	mode->height_mm = ctx->height_mm;
-	connector->display_info.width_mm = mode->width_mm;
-	connector->display_info.height_mm = mode->height_mm;
-
-	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-	drm_mode_probed_add(connector, mode);
-
-	return 1;
-}
-
-static const struct drm_panel_funcs s6e8aa0_drm_funcs = {
-	.disable = s6e8aa0_disable,
-	.unprepare = s6e8aa0_unprepare,
-	.prepare = s6e8aa0_prepare,
-	.enable = s6e8aa0_enable,
-	.get_modes = s6e8aa0_get_modes,
-};
-
-static int s6e8aa0_parse_dt(struct s6e8aa0 *ctx)
-{
-	struct device *dev = ctx->dev;
-	struct device_node *np = dev->of_node;
-	int ret;
-
-	ret = of_get_videomode(np, &ctx->vm, 0);
-	if (ret < 0)
-		return ret;
-
-	of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay);
-	of_property_read_u32(np, "reset-delay", &ctx->reset_delay);
-	of_property_read_u32(np, "init-delay", &ctx->init_delay);
-	of_property_read_u32(np, "panel-width-mm", &ctx->width_mm);
-	of_property_read_u32(np, "panel-height-mm", &ctx->height_mm);
-
-	ctx->flip_horizontal = of_property_read_bool(np, "flip-horizontal");
-	ctx->flip_vertical = of_property_read_bool(np, "flip-vertical");
-
-	return 0;
-}
-
-static int s6e8aa0_probe(struct mipi_dsi_device *dsi)
-{
-	struct device *dev = &dsi->dev;
-	struct s6e8aa0 *ctx;
-	int ret;
-
-	ctx = devm_kzalloc(dev, sizeof(struct s6e8aa0), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
-
-	mipi_dsi_set_drvdata(dsi, ctx);
-
-	ctx->dev = dev;
-
-	dsi->lanes = 4;
-	dsi->format = MIPI_DSI_FMT_RGB888;
-	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST
-		| MIPI_DSI_MODE_VIDEO_HFP | MIPI_DSI_MODE_VIDEO_HBP
-		| MIPI_DSI_MODE_VIDEO_HSA | MIPI_DSI_MODE_EOT_PACKET
-		| MIPI_DSI_MODE_VSYNC_FLUSH | MIPI_DSI_MODE_VIDEO_AUTO_VERT;
-
-	ret = s6e8aa0_parse_dt(ctx);
-	if (ret < 0)
-		return ret;
-
-	ctx->supplies[0].supply = "vdd3";
-	ctx->supplies[1].supply = "vci";
-	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
-				      ctx->supplies);
-	if (ret < 0) {
-		dev_err(dev, "failed to get regulators: %d\n", ret);
-		return ret;
-	}
-
-	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(ctx->reset_gpio)) {
-		dev_err(dev, "cannot get reset-gpios %ld\n",
-			PTR_ERR(ctx->reset_gpio));
-		return PTR_ERR(ctx->reset_gpio);
-	}
-
-	ctx->brightness = GAMMA_LEVEL_NUM - 1;
-
-	drm_panel_init(&ctx->panel);
-	ctx->panel.dev = dev;
-	ctx->panel.funcs = &s6e8aa0_drm_funcs;
-
-	ret = drm_panel_add(&ctx->panel);
-	if (ret < 0)
-		return ret;
-
-	ret = mipi_dsi_attach(dsi);
-	if (ret < 0)
-		drm_panel_remove(&ctx->panel);
-
-	return ret;
-}
-
-static int s6e8aa0_remove(struct mipi_dsi_device *dsi)
-{
-	struct s6e8aa0 *ctx = mipi_dsi_get_drvdata(dsi);
-
-	mipi_dsi_detach(dsi);
-	drm_panel_remove(&ctx->panel);
-
-	return 0;
-}
-
-static const struct of_device_id s6e8aa0_of_match[] = {
-	{ .compatible = "samsung,s6e8aa0" },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, s6e8aa0_of_match);
-
-static struct mipi_dsi_driver s6e8aa0_driver = {
-	.probe = s6e8aa0_probe,
-	.remove = s6e8aa0_remove,
-	.driver = {
-		.name = "panel_s6e8aa0",
-		.of_match_table = s6e8aa0_of_match,
-	},
-};
-module_mipi_dsi_driver(s6e8aa0_driver);
-
-MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>");
-MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
-MODULE_AUTHOR("Joongmock Shin <jmock.shin@samsung.com>");
-MODULE_AUTHOR("Eunchul Kim <chulspro.kim@samsung.com>");
-MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>");
-MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>");
-MODULE_DESCRIPTION("MIPI-DSI based s6e8aa0 AMOLED LCD Panel Driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/panel/panel-samsung-ld9040.c b/drivers/gpu/drm/panel/panel-samsung-ld9040.c
new file mode 100644
index 0000000..b202377
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-samsung-ld9040.c
@@ -0,0 +1,389 @@
+/*
+ * ld9040 AMOLED LCD drm_panel driver.
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ * Derived from drivers/video/backlight/ld9040.c
+ *
+ * Andrzej Hajda <a.hajda@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <drm/drmP.h>
+#include <drm/drm_panel.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <video/mipi_display.h>
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+/* Manufacturer Command Set */
+#define MCS_MANPWR		0xb0
+#define MCS_ELVSS_ON		0xb1
+#define MCS_USER_SETTING	0xf0
+#define MCS_DISPCTL		0xf2
+#define MCS_POWER_CTRL		0xf4
+#define MCS_GTCON		0xf7
+#define MCS_PANEL_CONDITION	0xf8
+#define MCS_GAMMA_SET1		0xf9
+#define MCS_GAMMA_CTRL		0xfb
+
+/* array of gamma tables for gamma value 2.2 */
+static u8 const ld9040_gammas[25][22] = {
+	{ 0xf9, 0x00, 0x13, 0xb2, 0xba, 0xd2, 0x00, 0x30, 0x00, 0xaf, 0xc0,
+	  0xb8, 0xcd, 0x00, 0x3d, 0x00, 0xa8, 0xb8, 0xb7, 0xcd, 0x00, 0x44 },
+	{ 0xf9, 0x00, 0x13, 0xb9, 0xb9, 0xd0, 0x00, 0x3c, 0x00, 0xaf, 0xbf,
+	  0xb6, 0xcb, 0x00, 0x4b, 0x00, 0xa8, 0xb9, 0xb5, 0xcc, 0x00, 0x52 },
+	{ 0xf9, 0x00, 0x13, 0xba, 0xb9, 0xcd, 0x00, 0x41, 0x00, 0xb0, 0xbe,
+	  0xb5, 0xc9, 0x00, 0x51, 0x00, 0xa9, 0xb9, 0xb5, 0xca, 0x00, 0x57 },
+	{ 0xf9, 0x00, 0x13, 0xb9, 0xb8, 0xcd, 0x00, 0x46, 0x00, 0xb1, 0xbc,
+	  0xb5, 0xc8, 0x00, 0x56, 0x00, 0xaa, 0xb8, 0xb4, 0xc9, 0x00, 0x5d },
+	{ 0xf9, 0x00, 0x13, 0xba, 0xb8, 0xcb, 0x00, 0x4b, 0x00, 0xb3, 0xbc,
+	  0xb4, 0xc7, 0x00, 0x5c, 0x00, 0xac, 0xb8, 0xb4, 0xc8, 0x00, 0x62 },
+	{ 0xf9, 0x00, 0x13, 0xbb, 0xb7, 0xca, 0x00, 0x4f, 0x00, 0xb4, 0xbb,
+	  0xb3, 0xc7, 0x00, 0x60, 0x00, 0xad, 0xb8, 0xb4, 0xc7, 0x00, 0x67 },
+	{ 0xf9, 0x00, 0x47, 0xba, 0xb6, 0xca, 0x00, 0x53, 0x00, 0xb5, 0xbb,
+	  0xb3, 0xc6, 0x00, 0x65, 0x00, 0xae, 0xb8, 0xb3, 0xc7, 0x00, 0x6c },
+	{ 0xf9, 0x00, 0x71, 0xbb, 0xb5, 0xc8, 0x00, 0x57, 0x00, 0xb5, 0xbb,
+	  0xb0, 0xc5, 0x00, 0x6a, 0x00, 0xae, 0xb9, 0xb1, 0xc6, 0x00, 0x70 },
+	{ 0xf9, 0x00, 0x7b, 0xbb, 0xb4, 0xc8, 0x00, 0x5b, 0x00, 0xb5, 0xba,
+	  0xb1, 0xc4, 0x00, 0x6e, 0x00, 0xae, 0xb9, 0xb0, 0xc5, 0x00, 0x75 },
+	{ 0xf9, 0x00, 0x82, 0xba, 0xb4, 0xc7, 0x00, 0x5f, 0x00, 0xb5, 0xba,
+	  0xb0, 0xc3, 0x00, 0x72, 0x00, 0xae, 0xb8, 0xb0, 0xc3, 0x00, 0x7a },
+	{ 0xf9, 0x00, 0x89, 0xba, 0xb3, 0xc8, 0x00, 0x62, 0x00, 0xb6, 0xba,
+	  0xaf, 0xc3, 0x00, 0x76, 0x00, 0xaf, 0xb7, 0xae, 0xc4, 0x00, 0x7e },
+	{ 0xf9, 0x00, 0x8b, 0xb9, 0xb3, 0xc7, 0x00, 0x65, 0x00, 0xb7, 0xb8,
+	  0xaf, 0xc3, 0x00, 0x7a, 0x00, 0x80, 0xb6, 0xae, 0xc4, 0x00, 0x81 },
+	{ 0xf9, 0x00, 0x93, 0xba, 0xb3, 0xc5, 0x00, 0x69, 0x00, 0xb8, 0xb9,
+	  0xae, 0xc1, 0x00, 0x7f, 0x00, 0xb0, 0xb6, 0xae, 0xc3, 0x00, 0x85 },
+	{ 0xf9, 0x00, 0x97, 0xba, 0xb2, 0xc5, 0x00, 0x6c, 0x00, 0xb8, 0xb8,
+	  0xae, 0xc1, 0x00, 0x82, 0x00, 0xb0, 0xb6, 0xae, 0xc2, 0x00, 0x89 },
+	{ 0xf9, 0x00, 0x9a, 0xba, 0xb1, 0xc4, 0x00, 0x6f, 0x00, 0xb8, 0xb8,
+	  0xad, 0xc0, 0x00, 0x86, 0x00, 0xb0, 0xb7, 0xad, 0xc0, 0x00, 0x8d },
+	{ 0xf9, 0x00, 0x9c, 0xb9, 0xb0, 0xc4, 0x00, 0x72, 0x00, 0xb8, 0xb8,
+	  0xac, 0xbf, 0x00, 0x8a, 0x00, 0xb0, 0xb6, 0xac, 0xc0, 0x00, 0x91 },
+	{ 0xf9, 0x00, 0x9e, 0xba, 0xb0, 0xc2, 0x00, 0x75, 0x00, 0xb9, 0xb8,
+	  0xab, 0xbe, 0x00, 0x8e, 0x00, 0xb0, 0xb6, 0xac, 0xbf, 0x00, 0x94 },
+	{ 0xf9, 0x00, 0xa0, 0xb9, 0xaf, 0xc3, 0x00, 0x77, 0x00, 0xb9, 0xb7,
+	  0xab, 0xbe, 0x00, 0x90, 0x00, 0xb0, 0xb6, 0xab, 0xbf, 0x00, 0x97 },
+	{ 0xf9, 0x00, 0xa2, 0xb9, 0xaf, 0xc2, 0x00, 0x7a, 0x00, 0xb9, 0xb7,
+	  0xaa, 0xbd, 0x00, 0x94, 0x00, 0xb0, 0xb5, 0xab, 0xbf, 0x00, 0x9a },
+	{ 0xf9, 0x00, 0xa4, 0xb9, 0xaf, 0xc1, 0x00, 0x7d, 0x00, 0xb9, 0xb6,
+	  0xaa, 0xbb, 0x00, 0x97, 0x00, 0xb1, 0xb5, 0xaa, 0xbf, 0x00, 0x9d },
+	{ 0xf9, 0x00, 0xa4, 0xb8, 0xb0, 0xbf, 0x00, 0x80, 0x00, 0xb8, 0xb6,
+	  0xaa, 0xbc, 0x00, 0x9a, 0x00, 0xb0, 0xb5, 0xab, 0xbd, 0x00, 0xa0 },
+	{ 0xf9, 0x00, 0xa8, 0xb8, 0xae, 0xbe, 0x00, 0x84, 0x00, 0xb9, 0xb7,
+	  0xa8, 0xbc, 0x00, 0x9d, 0x00, 0xb2, 0xb5, 0xaa, 0xbc, 0x00, 0xa4 },
+	{ 0xf9, 0x00, 0xa9, 0xb6, 0xad, 0xbf, 0x00, 0x86, 0x00, 0xb8, 0xb5,
+	  0xa8, 0xbc, 0x00, 0xa0, 0x00, 0xb3, 0xb3, 0xa9, 0xbc, 0x00, 0xa7 },
+	{ 0xf9, 0x00, 0xa9, 0xb7, 0xae, 0xbd, 0x00, 0x89, 0x00, 0xb7, 0xb6,
+	  0xa8, 0xba, 0x00, 0xa4, 0x00, 0xb1, 0xb4, 0xaa, 0xbb, 0x00, 0xaa },
+	{ 0xf9, 0x00, 0xa7, 0xb4, 0xae, 0xbf, 0x00, 0x91, 0x00, 0xb2, 0xb4,
+	  0xaa, 0xbb, 0x00, 0xac, 0x00, 0xb3, 0xb1, 0xaa, 0xbc, 0x00, 0xb3 },
+};
+
+struct ld9040 {
+	struct device *dev;
+	struct drm_panel panel;
+
+	struct regulator_bulk_data supplies[2];
+	struct gpio_desc *reset_gpio;
+	u32 power_on_delay;
+	u32 reset_delay;
+	struct videomode vm;
+	u32 width_mm;
+	u32 height_mm;
+
+	int brightness;
+
+	/* This field is tested by functions directly accessing bus before
+	 * transfer, transfer is skipped if it is set. In case of transfer
+	 * failure or unexpected response the field is set to error value.
+	 * Such construct allows to eliminate many checks in higher level
+	 * functions.
+	 */
+	int error;
+};
+
+static inline struct ld9040 *panel_to_ld9040(struct drm_panel *panel)
+{
+	return container_of(panel, struct ld9040, panel);
+}
+
+static int ld9040_clear_error(struct ld9040 *ctx)
+{
+	int ret = ctx->error;
+
+	ctx->error = 0;
+	return ret;
+}
+
+static int ld9040_spi_write_word(struct ld9040 *ctx, u16 data)
+{
+	struct spi_device *spi = to_spi_device(ctx->dev);
+	struct spi_transfer xfer = {
+		.len		= 2,
+		.tx_buf		= &data,
+	};
+	struct spi_message msg;
+
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer, &msg);
+
+	return spi_sync(spi, &msg);
+}
+
+static void ld9040_dcs_write(struct ld9040 *ctx, const u8 *data, size_t len)
+{
+	int ret = 0;
+
+	if (ctx->error < 0 || len == 0)
+		return;
+
+	dev_dbg(ctx->dev, "writing dcs seq: %*ph\n", (int)len, data);
+	ret = ld9040_spi_write_word(ctx, *data);
+
+	while (!ret && --len) {
+		++data;
+		ret = ld9040_spi_write_word(ctx, *data | 0x100);
+	}
+
+	if (ret) {
+		dev_err(ctx->dev, "error %d writing dcs seq: %*ph\n", ret,
+			(int)len, data);
+		ctx->error = ret;
+	}
+
+	usleep_range(300, 310);
+}
+
+#define ld9040_dcs_write_seq_static(ctx, seq...) \
+({\
+	static const u8 d[] = { seq };\
+	ld9040_dcs_write(ctx, d, ARRAY_SIZE(d));\
+})
+
+static void ld9040_brightness_set(struct ld9040 *ctx)
+{
+	ld9040_dcs_write(ctx, ld9040_gammas[ctx->brightness],
+			 ARRAY_SIZE(ld9040_gammas[ctx->brightness]));
+
+	ld9040_dcs_write_seq_static(ctx, MCS_GAMMA_CTRL, 0x02, 0x5a);
+}
+
+static void ld9040_init(struct ld9040 *ctx)
+{
+	ld9040_dcs_write_seq_static(ctx, MCS_USER_SETTING, 0x5a, 0x5a);
+	ld9040_dcs_write_seq_static(ctx, MCS_PANEL_CONDITION,
+		0x05, 0x65, 0x96, 0x71, 0x7d, 0x19, 0x3b, 0x0d,
+		0x19, 0x7e, 0x0d, 0xe2, 0x00, 0x00, 0x7e, 0x7d,
+		0x07, 0x07, 0x20, 0x20, 0x20, 0x02, 0x02);
+	ld9040_dcs_write_seq_static(ctx, MCS_DISPCTL,
+		0x02, 0x08, 0x08, 0x10, 0x10);
+	ld9040_dcs_write_seq_static(ctx, MCS_MANPWR, 0x04);
+	ld9040_dcs_write_seq_static(ctx, MCS_POWER_CTRL,
+		0x0a, 0x87, 0x25, 0x6a, 0x44, 0x02, 0x88);
+	ld9040_dcs_write_seq_static(ctx, MCS_ELVSS_ON, 0x0d, 0x00, 0x16);
+	ld9040_dcs_write_seq_static(ctx, MCS_GTCON, 0x09, 0x00, 0x00);
+	ld9040_brightness_set(ctx);
+	ld9040_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
+	ld9040_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
+}
+
+static int ld9040_power_on(struct ld9040 *ctx)
+{
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	msleep(ctx->power_on_delay);
+	gpiod_set_value(ctx->reset_gpio, 0);
+	msleep(ctx->reset_delay);
+	gpiod_set_value(ctx->reset_gpio, 1);
+	msleep(ctx->reset_delay);
+
+	return 0;
+}
+
+static int ld9040_power_off(struct ld9040 *ctx)
+{
+	return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+}
+
+static int ld9040_disable(struct drm_panel *panel)
+{
+	return 0;
+}
+
+static int ld9040_unprepare(struct drm_panel *panel)
+{
+	struct ld9040 *ctx = panel_to_ld9040(panel);
+
+	msleep(120);
+	ld9040_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
+	ld9040_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
+	msleep(40);
+
+	ld9040_clear_error(ctx);
+
+	return ld9040_power_off(ctx);
+}
+
+static int ld9040_prepare(struct drm_panel *panel)
+{
+	struct ld9040 *ctx = panel_to_ld9040(panel);
+	int ret;
+
+	ret = ld9040_power_on(ctx);
+	if (ret < 0)
+		return ret;
+
+	ld9040_init(ctx);
+
+	ret = ld9040_clear_error(ctx);
+
+	if (ret < 0)
+		ld9040_unprepare(panel);
+
+	return ret;
+}
+
+static int ld9040_enable(struct drm_panel *panel)
+{
+	return 0;
+}
+
+static int ld9040_get_modes(struct drm_panel *panel)
+{
+	struct drm_connector *connector = panel->connector;
+	struct ld9040 *ctx = panel_to_ld9040(panel);
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_create(connector->dev);
+	if (!mode) {
+		DRM_ERROR("failed to create a new display mode\n");
+		return 0;
+	}
+
+	drm_display_mode_from_videomode(&ctx->vm, mode);
+	mode->width_mm = ctx->width_mm;
+	mode->height_mm = ctx->height_mm;
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs ld9040_drm_funcs = {
+	.disable = ld9040_disable,
+	.unprepare = ld9040_unprepare,
+	.prepare = ld9040_prepare,
+	.enable = ld9040_enable,
+	.get_modes = ld9040_get_modes,
+};
+
+static int ld9040_parse_dt(struct ld9040 *ctx)
+{
+	struct device *dev = ctx->dev;
+	struct device_node *np = dev->of_node;
+	int ret;
+
+	ret = of_get_videomode(np, &ctx->vm, 0);
+	if (ret < 0)
+		return ret;
+
+	of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay);
+	of_property_read_u32(np, "reset-delay", &ctx->reset_delay);
+	of_property_read_u32(np, "panel-width-mm", &ctx->width_mm);
+	of_property_read_u32(np, "panel-height-mm", &ctx->height_mm);
+
+	return 0;
+}
+
+static int ld9040_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct ld9040 *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(struct ld9040), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	spi_set_drvdata(spi, ctx);
+
+	ctx->dev = dev;
+	ctx->brightness = ARRAY_SIZE(ld9040_gammas) - 1;
+
+	ret = ld9040_parse_dt(ctx);
+	if (ret < 0)
+		return ret;
+
+	ctx->supplies[0].supply = "vdd3";
+	ctx->supplies[1].supply = "vci";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+				      ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(ctx->reset_gpio)) {
+		dev_err(dev, "cannot get reset-gpios %ld\n",
+			PTR_ERR(ctx->reset_gpio));
+		return PTR_ERR(ctx->reset_gpio);
+	}
+
+	spi->bits_per_word = 9;
+	ret = spi_setup(spi);
+	if (ret < 0) {
+		dev_err(dev, "spi setup failed.\n");
+		return ret;
+	}
+
+	drm_panel_init(&ctx->panel);
+	ctx->panel.dev = dev;
+	ctx->panel.funcs = &ld9040_drm_funcs;
+
+	return drm_panel_add(&ctx->panel);
+}
+
+static int ld9040_remove(struct spi_device *spi)
+{
+	struct ld9040 *ctx = spi_get_drvdata(spi);
+
+	ld9040_power_off(ctx);
+	drm_panel_remove(&ctx->panel);
+
+	return 0;
+}
+
+static const struct of_device_id ld9040_of_match[] = {
+	{ .compatible = "samsung,ld9040" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ld9040_of_match);
+
+static struct spi_driver ld9040_driver = {
+	.probe = ld9040_probe,
+	.remove = ld9040_remove,
+	.driver = {
+		.name = "panel-samsung-ld9040",
+		.owner = THIS_MODULE,
+		.of_match_table = ld9040_of_match,
+	},
+};
+module_spi_driver(ld9040_driver);
+
+MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>");
+MODULE_DESCRIPTION("ld9040 LCD Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c
new file mode 100644
index 0000000..a188a39
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c
@@ -0,0 +1,1067 @@
+/*
+ * MIPI-DSI based s6e8aa0 AMOLED LCD 5.3 inch panel driver.
+ *
+ * Copyright (c) 2013 Samsung Electronics Co., Ltd
+ *
+ * Inki Dae, <inki.dae@samsung.com>
+ * Donghwa Lee, <dh09.lee@samsung.com>
+ * Joongmock Shin <jmock.shin@samsung.com>
+ * Eunchul Kim <chulspro.kim@samsung.com>
+ * Tomasz Figa <t.figa@samsung.com>
+ * Andrzej Hajda <a.hajda@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <drm/drmP.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+#define LDI_MTP_LENGTH			24
+#define GAMMA_LEVEL_NUM			25
+#define GAMMA_TABLE_LEN			26
+
+#define PANELCTL_SS_MASK		(1 << 5)
+#define PANELCTL_SS_1_800		(0 << 5)
+#define PANELCTL_SS_800_1		(1 << 5)
+#define PANELCTL_GTCON_MASK		(7 << 2)
+#define PANELCTL_GTCON_110		(6 << 2)
+#define PANELCTL_GTCON_111		(7 << 2)
+
+#define PANELCTL_CLK1_CON_MASK		(7 << 3)
+#define PANELCTL_CLK1_000		(0 << 3)
+#define PANELCTL_CLK1_001		(1 << 3)
+#define PANELCTL_CLK2_CON_MASK		(7 << 0)
+#define PANELCTL_CLK2_000		(0 << 0)
+#define PANELCTL_CLK2_001		(1 << 0)
+
+#define PANELCTL_INT1_CON_MASK		(7 << 3)
+#define PANELCTL_INT1_000		(0 << 3)
+#define PANELCTL_INT1_001		(1 << 3)
+#define PANELCTL_INT2_CON_MASK		(7 << 0)
+#define PANELCTL_INT2_000		(0 << 0)
+#define PANELCTL_INT2_001		(1 << 0)
+
+#define PANELCTL_BICTL_CON_MASK		(7 << 3)
+#define PANELCTL_BICTL_000		(0 << 3)
+#define PANELCTL_BICTL_001		(1 << 3)
+#define PANELCTL_BICTLB_CON_MASK	(7 << 0)
+#define PANELCTL_BICTLB_000		(0 << 0)
+#define PANELCTL_BICTLB_001		(1 << 0)
+
+#define PANELCTL_EM_CLK1_CON_MASK	(7 << 3)
+#define PANELCTL_EM_CLK1_110		(6 << 3)
+#define PANELCTL_EM_CLK1_111		(7 << 3)
+#define PANELCTL_EM_CLK1B_CON_MASK	(7 << 0)
+#define PANELCTL_EM_CLK1B_110		(6 << 0)
+#define PANELCTL_EM_CLK1B_111		(7 << 0)
+
+#define PANELCTL_EM_CLK2_CON_MASK	(7 << 3)
+#define PANELCTL_EM_CLK2_110		(6 << 3)
+#define PANELCTL_EM_CLK2_111		(7 << 3)
+#define PANELCTL_EM_CLK2B_CON_MASK	(7 << 0)
+#define PANELCTL_EM_CLK2B_110		(6 << 0)
+#define PANELCTL_EM_CLK2B_111		(7 << 0)
+
+#define PANELCTL_EM_INT1_CON_MASK	(7 << 3)
+#define PANELCTL_EM_INT1_000		(0 << 3)
+#define PANELCTL_EM_INT1_001		(1 << 3)
+#define PANELCTL_EM_INT2_CON_MASK	(7 << 0)
+#define PANELCTL_EM_INT2_000		(0 << 0)
+#define PANELCTL_EM_INT2_001		(1 << 0)
+
+#define AID_DISABLE			(0x4)
+#define AID_1				(0x5)
+#define AID_2				(0x6)
+#define AID_3				(0x7)
+
+typedef u8 s6e8aa0_gamma_table[GAMMA_TABLE_LEN];
+
+struct s6e8aa0_variant {
+	u8 version;
+	const s6e8aa0_gamma_table *gamma_tables;
+};
+
+struct s6e8aa0 {
+	struct device *dev;
+	struct drm_panel panel;
+
+	struct regulator_bulk_data supplies[2];
+	struct gpio_desc *reset_gpio;
+	u32 power_on_delay;
+	u32 reset_delay;
+	u32 init_delay;
+	bool flip_horizontal;
+	bool flip_vertical;
+	struct videomode vm;
+	u32 width_mm;
+	u32 height_mm;
+
+	u8 version;
+	u8 id;
+	const struct s6e8aa0_variant *variant;
+	int brightness;
+
+	/* This field is tested by functions directly accessing DSI bus before
+	 * transfer, transfer is skipped if it is set. In case of transfer
+	 * failure or unexpected response the field is set to error value.
+	 * Such construct allows to eliminate many checks in higher level
+	 * functions.
+	 */
+	int error;
+};
+
+static inline struct s6e8aa0 *panel_to_s6e8aa0(struct drm_panel *panel)
+{
+	return container_of(panel, struct s6e8aa0, panel);
+}
+
+static int s6e8aa0_clear_error(struct s6e8aa0 *ctx)
+{
+	int ret = ctx->error;
+
+	ctx->error = 0;
+	return ret;
+}
+
+static void s6e8aa0_dcs_write(struct s6e8aa0 *ctx, const void *data, size_t len)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	ssize_t ret;
+
+	if (ctx->error < 0)
+		return;
+
+	ret = mipi_dsi_dcs_write_buffer(dsi, data, len);
+	if (ret < 0) {
+		dev_err(ctx->dev, "error %zd writing dcs seq: %*ph\n", ret,
+			(int)len, data);
+		ctx->error = ret;
+	}
+}
+
+static int s6e8aa0_dcs_read(struct s6e8aa0 *ctx, u8 cmd, void *data, size_t len)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	int ret;
+
+	if (ctx->error < 0)
+		return ctx->error;
+
+	ret = mipi_dsi_dcs_read(dsi, cmd, data, len);
+	if (ret < 0) {
+		dev_err(ctx->dev, "error %d reading dcs seq(%#x)\n", ret, cmd);
+		ctx->error = ret;
+	}
+
+	return ret;
+}
+
+#define s6e8aa0_dcs_write_seq(ctx, seq...) \
+({\
+	const u8 d[] = { seq };\
+	BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, "DCS sequence too big for stack");\
+	s6e8aa0_dcs_write(ctx, d, ARRAY_SIZE(d));\
+})
+
+#define s6e8aa0_dcs_write_seq_static(ctx, seq...) \
+({\
+	static const u8 d[] = { seq };\
+	s6e8aa0_dcs_write(ctx, d, ARRAY_SIZE(d));\
+})
+
+static void s6e8aa0_apply_level_1_key(struct s6e8aa0 *ctx)
+{
+	s6e8aa0_dcs_write_seq_static(ctx, 0xf0, 0x5a, 0x5a);
+}
+
+static void s6e8aa0_panel_cond_set_v142(struct s6e8aa0 *ctx)
+{
+	static const u8 aids[] = {
+		0x04, 0x04, 0x04, 0x04, 0x04, 0x60, 0x80, 0xA0
+	};
+	u8 aid = aids[ctx->id >> 5];
+	u8 cfg = 0x3d;
+	u8 clk_con = 0xc8;
+	u8 int_con = 0x08;
+	u8 bictl_con = 0x48;
+	u8 em_clk1_con = 0xff;
+	u8 em_clk2_con = 0xff;
+	u8 em_int_con = 0xc8;
+
+	if (ctx->flip_vertical) {
+		/* GTCON */
+		cfg &= ~(PANELCTL_GTCON_MASK);
+		cfg |= (PANELCTL_GTCON_110);
+	}
+
+	if (ctx->flip_horizontal) {
+		/* SS */
+		cfg &= ~(PANELCTL_SS_MASK);
+		cfg |= (PANELCTL_SS_1_800);
+	}
+
+	if (ctx->flip_horizontal || ctx->flip_vertical) {
+		/* CLK1,2_CON */
+		clk_con &= ~(PANELCTL_CLK1_CON_MASK |
+			PANELCTL_CLK2_CON_MASK);
+		clk_con |= (PANELCTL_CLK1_000 | PANELCTL_CLK2_001);
+
+		/* INT1,2_CON */
+		int_con &= ~(PANELCTL_INT1_CON_MASK |
+			PANELCTL_INT2_CON_MASK);
+		int_con |= (PANELCTL_INT1_000 | PANELCTL_INT2_001);
+
+		/* BICTL,B_CON */
+		bictl_con &= ~(PANELCTL_BICTL_CON_MASK |
+			PANELCTL_BICTLB_CON_MASK);
+		bictl_con |= (PANELCTL_BICTL_000 |
+			PANELCTL_BICTLB_001);
+
+		/* EM_CLK1,1B_CON */
+		em_clk1_con &= ~(PANELCTL_EM_CLK1_CON_MASK |
+			PANELCTL_EM_CLK1B_CON_MASK);
+		em_clk1_con |= (PANELCTL_EM_CLK1_110 |
+			PANELCTL_EM_CLK1B_110);
+
+		/* EM_CLK2,2B_CON */
+		em_clk2_con &= ~(PANELCTL_EM_CLK2_CON_MASK |
+			PANELCTL_EM_CLK2B_CON_MASK);
+		em_clk2_con |= (PANELCTL_EM_CLK2_110 |
+			PANELCTL_EM_CLK2B_110);
+
+		/* EM_INT1,2_CON */
+		em_int_con &= ~(PANELCTL_EM_INT1_CON_MASK |
+			PANELCTL_EM_INT2_CON_MASK);
+		em_int_con |= (PANELCTL_EM_INT1_000 |
+			PANELCTL_EM_INT2_001);
+	}
+
+	s6e8aa0_dcs_write_seq(ctx,
+		0xf8, cfg, 0x35, 0x00, 0x00, 0x00, 0x93, 0x00,
+		0x3c, 0x78, 0x08, 0x27, 0x7d, 0x3f, 0x00, 0x00,
+		0x00, 0x20, aid, 0x08, 0x6e, 0x00, 0x00, 0x00,
+		0x02, 0x07, 0x07, 0x23, 0x23, 0xc0, clk_con, int_con,
+		bictl_con, 0xc1, 0x00, 0xc1, em_clk1_con, em_clk2_con,
+		em_int_con);
+}
+
+static void s6e8aa0_panel_cond_set(struct s6e8aa0 *ctx)
+{
+	if (ctx->version < 142)
+		s6e8aa0_dcs_write_seq_static(ctx,
+			0xf8, 0x19, 0x35, 0x00, 0x00, 0x00, 0x94, 0x00,
+			0x3c, 0x78, 0x10, 0x27, 0x08, 0x6e, 0x00, 0x00,
+			0x00, 0x00, 0x04, 0x08, 0x6e, 0x00, 0x00, 0x00,
+			0x00, 0x07, 0x07, 0x23, 0x6e, 0xc0, 0xc1, 0x01,
+			0x81, 0xc1, 0x00, 0xc3, 0xf6, 0xf6, 0xc1
+		);
+	else
+		s6e8aa0_panel_cond_set_v142(ctx);
+}
+
+static void s6e8aa0_display_condition_set(struct s6e8aa0 *ctx)
+{
+	s6e8aa0_dcs_write_seq_static(ctx, 0xf2, 0x80, 0x03, 0x0d);
+}
+
+static void s6e8aa0_etc_source_control(struct s6e8aa0 *ctx)
+{
+	s6e8aa0_dcs_write_seq_static(ctx, 0xf6, 0x00, 0x02, 0x00);
+}
+
+static void s6e8aa0_etc_pentile_control(struct s6e8aa0 *ctx)
+{
+	static const u8 pent32[] = {
+		0xb6, 0x0c, 0x02, 0x03, 0x32, 0xc0, 0x44, 0x44, 0xc0, 0x00
+	};
+
+	static const u8 pent142[] = {
+		0xb6, 0x0c, 0x02, 0x03, 0x32, 0xff, 0x44, 0x44, 0xc0, 0x00
+	};
+
+	if (ctx->version < 142)
+		s6e8aa0_dcs_write(ctx, pent32, ARRAY_SIZE(pent32));
+	else
+		s6e8aa0_dcs_write(ctx, pent142, ARRAY_SIZE(pent142));
+}
+
+static void s6e8aa0_etc_power_control(struct s6e8aa0 *ctx)
+{
+	static const u8 pwr142[] = {
+		0xf4, 0xcf, 0x0a, 0x12, 0x10, 0x1e, 0x33, 0x02
+	};
+
+	static const u8 pwr32[] = {
+		0xf4, 0xcf, 0x0a, 0x15, 0x10, 0x19, 0x33, 0x02
+	};
+
+	if (ctx->version < 142)
+		s6e8aa0_dcs_write(ctx, pwr32, ARRAY_SIZE(pwr32));
+	else
+		s6e8aa0_dcs_write(ctx, pwr142, ARRAY_SIZE(pwr142));
+}
+
+static void s6e8aa0_etc_elvss_control(struct s6e8aa0 *ctx)
+{
+	u8 id = ctx->id ? 0 : 0x95;
+
+	s6e8aa0_dcs_write_seq(ctx, 0xb1, 0x04, id);
+}
+
+static void s6e8aa0_elvss_nvm_set_v142(struct s6e8aa0 *ctx)
+{
+	u8 br;
+
+	switch (ctx->brightness) {
+	case 0 ... 6: /* 30cd ~ 100cd */
+		br = 0xdf;
+		break;
+	case 7 ... 11: /* 120cd ~ 150cd */
+		br = 0xdd;
+		break;
+	case 12 ... 15: /* 180cd ~ 210cd */
+	default:
+		br = 0xd9;
+		break;
+	case 16 ... 24: /* 240cd ~ 300cd */
+		br = 0xd0;
+		break;
+	}
+
+	s6e8aa0_dcs_write_seq(ctx, 0xd9, 0x14, 0x40, 0x0c, 0xcb, 0xce, 0x6e,
+		0xc4, 0x0f, 0x40, 0x41, br, 0x00, 0x60, 0x19);
+}
+
+static void s6e8aa0_elvss_nvm_set(struct s6e8aa0 *ctx)
+{
+	if (ctx->version < 142)
+		s6e8aa0_dcs_write_seq_static(ctx,
+			0xd9, 0x14, 0x40, 0x0c, 0xcb, 0xce, 0x6e, 0xc4, 0x07,
+			0x40, 0x41, 0xc1, 0x00, 0x60, 0x19);
+	else
+		s6e8aa0_elvss_nvm_set_v142(ctx);
+};
+
+static void s6e8aa0_apply_level_2_key(struct s6e8aa0 *ctx)
+{
+	s6e8aa0_dcs_write_seq_static(ctx, 0xfc, 0x5a, 0x5a);
+}
+
+static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v142[GAMMA_LEVEL_NUM] = {
+	{
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x62, 0x55, 0x55,
+		0xaf, 0xb1, 0xb1, 0xbd, 0xce, 0xb7, 0x9a, 0xb1,
+		0x90, 0xb2, 0xc4, 0xae, 0x00, 0x60, 0x00, 0x40,
+		0x00, 0x70,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x74, 0x68, 0x69,
+		0xb8, 0xc1, 0xb7, 0xbd, 0xcd, 0xb8, 0x93, 0xab,
+		0x88, 0xb4, 0xc4, 0xb1, 0x00, 0x6b, 0x00, 0x4d,
+		0x00, 0x7d,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x95, 0x8a, 0x89,
+		0xb4, 0xc6, 0xb2, 0xc5, 0xd2, 0xbf, 0x90, 0xa8,
+		0x85, 0xb5, 0xc4, 0xb3, 0x00, 0x7b, 0x00, 0x5d,
+		0x00, 0x8f,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9f, 0x98, 0x92,
+		0xb3, 0xc4, 0xb0, 0xbc, 0xcc, 0xb4, 0x91, 0xa6,
+		0x87, 0xb5, 0xc5, 0xb4, 0x00, 0x87, 0x00, 0x6a,
+		0x00, 0x9e,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x99, 0x93, 0x8b,
+		0xb2, 0xc2, 0xb0, 0xbd, 0xce, 0xb4, 0x90, 0xa6,
+		0x87, 0xb3, 0xc3, 0xb2, 0x00, 0x8d, 0x00, 0x70,
+		0x00, 0xa4,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xa5, 0x99,
+		0xb2, 0xc2, 0xb0, 0xbb, 0xcd, 0xb1, 0x93, 0xa7,
+		0x8a, 0xb2, 0xc1, 0xb0, 0x00, 0x92, 0x00, 0x75,
+		0x00, 0xaa,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa0, 0xa0, 0x93,
+		0xb6, 0xc4, 0xb4, 0xb5, 0xc8, 0xaa, 0x94, 0xa9,
+		0x8c, 0xb2, 0xc0, 0xb0, 0x00, 0x97, 0x00, 0x7a,
+		0x00, 0xaf,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xa7, 0x96,
+		0xb3, 0xc2, 0xb0, 0xba, 0xcb, 0xb0, 0x94, 0xa8,
+		0x8c, 0xb0, 0xbf, 0xaf, 0x00, 0x9f, 0x00, 0x83,
+		0x00, 0xb9,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9d, 0xa2, 0x90,
+		0xb6, 0xc5, 0xb3, 0xb8, 0xc9, 0xae, 0x94, 0xa8,
+		0x8d, 0xaf, 0xbd, 0xad, 0x00, 0xa4, 0x00, 0x88,
+		0x00, 0xbf,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa6, 0xac, 0x97,
+		0xb4, 0xc4, 0xb1, 0xbb, 0xcb, 0xb2, 0x93, 0xa7,
+		0x8d, 0xae, 0xbc, 0xad, 0x00, 0xa7, 0x00, 0x8c,
+		0x00, 0xc3,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa2, 0xa9, 0x93,
+		0xb6, 0xc5, 0xb2, 0xba, 0xc9, 0xb0, 0x93, 0xa7,
+		0x8d, 0xae, 0xbb, 0xac, 0x00, 0xab, 0x00, 0x90,
+		0x00, 0xc8,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9e, 0xa6, 0x8f,
+		0xb7, 0xc6, 0xb3, 0xb8, 0xc8, 0xb0, 0x93, 0xa6,
+		0x8c, 0xae, 0xbb, 0xad, 0x00, 0xae, 0x00, 0x93,
+		0x00, 0xcc,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xab, 0xb4, 0x9c,
+		0xb3, 0xc3, 0xaf, 0xb7, 0xc7, 0xaf, 0x93, 0xa6,
+		0x8c, 0xaf, 0xbc, 0xad, 0x00, 0xb1, 0x00, 0x97,
+		0x00, 0xcf,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa6, 0xb1, 0x98,
+		0xb1, 0xc2, 0xab, 0xba, 0xc9, 0xb2, 0x93, 0xa6,
+		0x8d, 0xae, 0xba, 0xab, 0x00, 0xb5, 0x00, 0x9b,
+		0x00, 0xd4,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xae, 0x94,
+		0xb2, 0xc3, 0xac, 0xbb, 0xca, 0xb4, 0x91, 0xa4,
+		0x8a, 0xae, 0xba, 0xac, 0x00, 0xb8, 0x00, 0x9e,
+		0x00, 0xd8,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xab, 0xb7, 0x9c,
+		0xae, 0xc0, 0xa9, 0xba, 0xc9, 0xb3, 0x92, 0xa5,
+		0x8b, 0xad, 0xb9, 0xab, 0x00, 0xbb, 0x00, 0xa1,
+		0x00, 0xdc,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb4, 0x97,
+		0xb0, 0xc1, 0xaa, 0xb9, 0xc8, 0xb2, 0x92, 0xa5,
+		0x8c, 0xae, 0xb9, 0xab, 0x00, 0xbe, 0x00, 0xa4,
+		0x00, 0xdf,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xb0, 0x94,
+		0xb0, 0xc2, 0xab, 0xbb, 0xc9, 0xb3, 0x91, 0xa4,
+		0x8b, 0xad, 0xb8, 0xaa, 0x00, 0xc1, 0x00, 0xa8,
+		0x00, 0xe2,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xb0, 0x94,
+		0xae, 0xbf, 0xa8, 0xb9, 0xc8, 0xb3, 0x92, 0xa4,
+		0x8b, 0xad, 0xb7, 0xa9, 0x00, 0xc4, 0x00, 0xab,
+		0x00, 0xe6,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb6, 0x98,
+		0xaf, 0xc0, 0xa8, 0xb8, 0xc7, 0xb2, 0x93, 0xa5,
+		0x8d, 0xad, 0xb7, 0xa9, 0x00, 0xc7, 0x00, 0xae,
+		0x00, 0xe9,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb3, 0x95,
+		0xaf, 0xc1, 0xa9, 0xb9, 0xc8, 0xb3, 0x92, 0xa4,
+		0x8b, 0xad, 0xb7, 0xaa, 0x00, 0xc9, 0x00, 0xb0,
+		0x00, 0xec,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb3, 0x95,
+		0xac, 0xbe, 0xa6, 0xbb, 0xc9, 0xb4, 0x90, 0xa3,
+		0x8a, 0xad, 0xb7, 0xa9, 0x00, 0xcc, 0x00, 0xb4,
+		0x00, 0xf0,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa0, 0xb0, 0x91,
+		0xae, 0xc0, 0xa6, 0xba, 0xc8, 0xb4, 0x91, 0xa4,
+		0x8b, 0xad, 0xb7, 0xa9, 0x00, 0xcf, 0x00, 0xb7,
+		0x00, 0xf3,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb8, 0x98,
+		0xab, 0xbd, 0xa4, 0xbb, 0xc9, 0xb5, 0x91, 0xa3,
+		0x8b, 0xac, 0xb6, 0xa8, 0x00, 0xd1, 0x00, 0xb9,
+		0x00, 0xf6,
+	}, {
+		0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb5, 0x95,
+		0xa9, 0xbc, 0xa1, 0xbb, 0xc9, 0xb5, 0x91, 0xa3,
+		0x8a, 0xad, 0xb6, 0xa8, 0x00, 0xd6, 0x00, 0xbf,
+		0x00, 0xfc,
+	},
+};
+
+static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v96[GAMMA_LEVEL_NUM] = {
+	{
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
+		0xdf, 0x1f, 0xd7, 0xdc, 0xb7, 0xe1, 0xc0, 0xaf,
+		0xc4, 0xd2, 0xd0, 0xcf, 0x00, 0x4d, 0x00, 0x40,
+		0x00, 0x5f,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
+		0xd5, 0x35, 0xcf, 0xdc, 0xc1, 0xe1, 0xbf, 0xb3,
+		0xc1, 0xd2, 0xd1, 0xce,	0x00, 0x53, 0x00, 0x46,
+		0x00, 0x67,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
+		0xd2, 0x64, 0xcf, 0xdb, 0xc6, 0xe1, 0xbd, 0xb3,
+		0xbd, 0xd2, 0xd2, 0xce,	0x00, 0x59, 0x00, 0x4b,
+		0x00, 0x6e,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
+		0xd0, 0x7c, 0xcf, 0xdb, 0xc9, 0xe0, 0xbc, 0xb4,
+		0xbb, 0xcf, 0xd1, 0xcc, 0x00, 0x5f, 0x00, 0x50,
+		0x00, 0x75,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
+		0xd0, 0x8e, 0xd1, 0xdb, 0xcc, 0xdf, 0xbb, 0xb6,
+		0xb9, 0xd0, 0xd1, 0xcd,	0x00, 0x63, 0x00, 0x54,
+		0x00, 0x7a,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
+		0xd1, 0x9e, 0xd5, 0xda, 0xcd, 0xdd, 0xbb, 0xb7,
+		0xb9, 0xce, 0xce, 0xc9,	0x00, 0x68, 0x00, 0x59,
+		0x00, 0x81,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff,
+		0xd0, 0xa5, 0xd6, 0xda, 0xcf, 0xdd, 0xbb, 0xb7,
+		0xb8, 0xcc, 0xcd, 0xc7,	0x00, 0x6c, 0x00, 0x5c,
+		0x00, 0x86,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xfe,
+		0xd0, 0xae, 0xd7, 0xd9, 0xd0, 0xdb, 0xb9, 0xb6,
+		0xb5, 0xca, 0xcc, 0xc5,	0x00, 0x74, 0x00, 0x63,
+		0x00, 0x90,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xf9,
+		0xcf, 0xb0, 0xd6, 0xd9, 0xd1, 0xdb, 0xb9, 0xb6,
+		0xb4, 0xca, 0xcb, 0xc5,	0x00, 0x77, 0x00, 0x66,
+		0x00, 0x94,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xf7,
+		0xcf, 0xb3, 0xd7, 0xd8, 0xd1, 0xd9, 0xb7, 0xb6,
+		0xb3, 0xc9, 0xca, 0xc3,	0x00, 0x7b, 0x00, 0x69,
+		0x00, 0x99,
+
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xfd, 0x2f, 0xf7,
+		0xdf, 0xb5, 0xd6, 0xd8, 0xd1, 0xd8, 0xb6, 0xb5,
+		0xb2, 0xca, 0xcb, 0xc4,	0x00, 0x7e, 0x00, 0x6c,
+		0x00, 0x9d,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xfa, 0x2f, 0xf5,
+		0xce, 0xb6, 0xd5, 0xd7, 0xd2, 0xd8, 0xb6, 0xb4,
+		0xb0, 0xc7, 0xc9, 0xc1,	0x00, 0x84, 0x00, 0x71,
+		0x00, 0xa5,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf7, 0x2f, 0xf2,
+		0xce, 0xb9, 0xd5, 0xd8, 0xd2, 0xd8, 0xb4, 0xb4,
+		0xaf, 0xc7, 0xc9, 0xc1,	0x00, 0x87, 0x00, 0x73,
+		0x00, 0xa8,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf5, 0x2f, 0xf0,
+		0xdf, 0xba, 0xd5, 0xd7, 0xd2, 0xd7, 0xb4, 0xb4,
+		0xaf, 0xc5, 0xc7, 0xbf,	0x00, 0x8a, 0x00, 0x76,
+		0x00, 0xac,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf2, 0x2f, 0xed,
+		0xcE, 0xbb, 0xd4, 0xd6, 0xd2, 0xd6, 0xb5, 0xb4,
+		0xaF, 0xc5, 0xc7, 0xbf,	0x00, 0x8c, 0x00, 0x78,
+		0x00, 0xaf,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xef, 0x2f, 0xeb,
+		0xcd, 0xbb, 0xd2, 0xd7, 0xd3, 0xd6, 0xb3, 0xb4,
+		0xae, 0xc5, 0xc6, 0xbe,	0x00, 0x91, 0x00, 0x7d,
+		0x00, 0xb6,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xee, 0x2f, 0xea,
+		0xce, 0xbd, 0xd4, 0xd6, 0xd2, 0xd5, 0xb2, 0xb3,
+		0xad, 0xc3, 0xc4, 0xbb,	0x00, 0x94, 0x00, 0x7f,
+		0x00, 0xba,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xec, 0x2f, 0xe8,
+		0xce, 0xbe, 0xd3, 0xd6, 0xd3, 0xd5, 0xb2, 0xb2,
+		0xac, 0xc3, 0xc5, 0xbc,	0x00, 0x96, 0x00, 0x81,
+		0x00, 0xbd,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xeb, 0x2f, 0xe7,
+		0xce, 0xbf, 0xd3, 0xd6, 0xd2, 0xd5, 0xb1, 0xb2,
+		0xab, 0xc2, 0xc4, 0xbb,	0x00, 0x99, 0x00, 0x83,
+		0x00, 0xc0,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xef, 0x5f, 0xe9,
+		0xca, 0xbf, 0xd3, 0xd5, 0xd2, 0xd4, 0xb2, 0xb2,
+		0xab, 0xc1, 0xc4, 0xba,	0x00, 0x9b, 0x00, 0x85,
+		0x00, 0xc3,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xea, 0x5f, 0xe8,
+		0xee, 0xbf, 0xd2, 0xd5, 0xd2, 0xd4, 0xb1, 0xb2,
+		0xab, 0xc1, 0xc2, 0xb9,	0x00, 0x9D, 0x00, 0x87,
+		0x00, 0xc6,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe9, 0x5f, 0xe7,
+		0xcd, 0xbf, 0xd2, 0xd6, 0xd2, 0xd4, 0xb1, 0xb2,
+		0xab, 0xbe, 0xc0, 0xb7,	0x00, 0xa1, 0x00, 0x8a,
+		0x00, 0xca,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe8, 0x61, 0xe6,
+		0xcd, 0xbf, 0xd1, 0xd6, 0xd3, 0xd4, 0xaf, 0xb0,
+		0xa9, 0xbe, 0xc1, 0xb7,	0x00, 0xa3, 0x00, 0x8b,
+		0x00, 0xce,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe8, 0x62, 0xe5,
+		0xcc, 0xc0, 0xd0, 0xd6, 0xd2, 0xd4, 0xaf, 0xb1,
+		0xa9, 0xbd, 0xc0, 0xb6,	0x00, 0xa5, 0x00, 0x8d,
+		0x00, 0xd0,
+	}, {
+		0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe7, 0x7f, 0xe3,
+		0xcc, 0xc1, 0xd0, 0xd5, 0xd3, 0xd3, 0xae, 0xaf,
+		0xa8, 0xbe, 0xc0, 0xb7,	0x00, 0xa8, 0x00, 0x90,
+		0x00, 0xd3,
+	}
+};
+
+static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v32[GAMMA_LEVEL_NUM] = {
+	{
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0x72, 0x5e, 0x6b,
+		0xa1, 0xa7, 0x9a, 0xb4, 0xcb, 0xb8, 0x92, 0xac,
+		0x97, 0xb4, 0xc3, 0xb5, 0x00, 0x4e, 0x00, 0x37,
+		0x00, 0x58,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0x85, 0x71, 0x7d,
+		0xa6, 0xb6, 0xa1, 0xb5, 0xca, 0xba, 0x93, 0xac,
+		0x98, 0xb2, 0xc0, 0xaf, 0x00, 0x59, 0x00, 0x43,
+		0x00, 0x64,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa4, 0x94, 0x9e,
+		0xa0, 0xbb, 0x9c, 0xc3, 0xd2, 0xc6, 0x93, 0xaa,
+		0x95, 0xb7, 0xc2, 0xb4, 0x00, 0x65, 0x00, 0x50,
+		0x00, 0x74,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xa1, 0xa6,
+		0xa0, 0xb9, 0x9b, 0xc3, 0xd1, 0xc8, 0x90, 0xa6,
+		0x90, 0xbb, 0xc3, 0xb7, 0x00, 0x6f, 0x00, 0x5b,
+		0x00, 0x80,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa6, 0x9d, 0x9f,
+		0x9f, 0xb8, 0x9a, 0xc7, 0xd5, 0xcc, 0x90, 0xa5,
+		0x8f, 0xb8, 0xc1, 0xb6, 0x00, 0x74, 0x00, 0x60,
+		0x00, 0x85,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb3, 0xae, 0xae,
+		0x9e, 0xb7, 0x9a, 0xc8, 0xd6, 0xce, 0x91, 0xa6,
+		0x90, 0xb6, 0xc0, 0xb3, 0x00, 0x78, 0x00, 0x65,
+		0x00, 0x8a,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xa9, 0xa8,
+		0xa3, 0xb9, 0x9e, 0xc4, 0xd3, 0xcb, 0x94, 0xa6,
+		0x90, 0xb6, 0xbf, 0xb3, 0x00, 0x7c, 0x00, 0x69,
+		0x00, 0x8e,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xaf, 0xaf, 0xa9,
+		0xa5, 0xbc, 0xa2, 0xc7, 0xd5, 0xcd, 0x93, 0xa5,
+		0x8f, 0xb4, 0xbd, 0xb1, 0x00, 0x83, 0x00, 0x70,
+		0x00, 0x96,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xab, 0xa3,
+		0xaa, 0xbf, 0xa7, 0xc5, 0xd3, 0xcb, 0x93, 0xa5,
+		0x8f, 0xb2, 0xbb, 0xb0, 0x00, 0x86, 0x00, 0x74,
+		0x00, 0x9b,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb1, 0xb5, 0xab,
+		0xab, 0xc0, 0xa9, 0xc7, 0xd4, 0xcc, 0x94, 0xa4,
+		0x8f, 0xb1, 0xbb, 0xaf, 0x00, 0x8a, 0x00, 0x77,
+		0x00, 0x9e,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb2, 0xa7,
+		0xae, 0xc2, 0xab, 0xc5, 0xd3, 0xca, 0x93, 0xa4,
+		0x8f, 0xb1, 0xba, 0xae, 0x00, 0x8d, 0x00, 0x7b,
+		0x00, 0xa2,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xaf, 0xa3,
+		0xb0, 0xc3, 0xae, 0xc4, 0xd1, 0xc8, 0x93, 0xa4,
+		0x8f, 0xb1, 0xba, 0xaf, 0x00, 0x8f, 0x00, 0x7d,
+		0x00, 0xa5,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb4, 0xbd, 0xaf,
+		0xae, 0xc1, 0xab, 0xc2, 0xd0, 0xc6, 0x94, 0xa4,
+		0x8f, 0xb1, 0xba, 0xaf, 0x00, 0x92, 0x00, 0x80,
+		0x00, 0xa8,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xb9, 0xac,
+		0xad, 0xc1, 0xab, 0xc4, 0xd1, 0xc7, 0x95, 0xa4,
+		0x90, 0xb0, 0xb9, 0xad, 0x00, 0x95, 0x00, 0x84,
+		0x00, 0xac,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb6, 0xa7,
+		0xaf, 0xc2, 0xae, 0xc5, 0xd1, 0xc7, 0x93, 0xa3,
+		0x8e, 0xb0, 0xb9, 0xad, 0x00, 0x98, 0x00, 0x86,
+		0x00, 0xaf,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb4, 0xbf, 0xaf,
+		0xad, 0xc1, 0xab, 0xc3, 0xd0, 0xc6, 0x94, 0xa3,
+		0x8f, 0xaf, 0xb8, 0xac, 0x00, 0x9a, 0x00, 0x89,
+		0x00, 0xb2,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xbc, 0xac,
+		0xaf, 0xc2, 0xad, 0xc2, 0xcf, 0xc4, 0x94, 0xa3,
+		0x90, 0xaf, 0xb8, 0xad, 0x00, 0x9c, 0x00, 0x8b,
+		0x00, 0xb5,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb9, 0xa7,
+		0xb1, 0xc4, 0xaf, 0xc3, 0xcf, 0xc5, 0x94, 0xa3,
+		0x8f, 0xae, 0xb7, 0xac, 0x00, 0x9f, 0x00, 0x8e,
+		0x00, 0xb8,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb9, 0xa7,
+		0xaf, 0xc2, 0xad, 0xc1, 0xce, 0xc3, 0x95, 0xa3,
+		0x90, 0xad, 0xb6, 0xab, 0x00, 0xa2, 0x00, 0x91,
+		0x00, 0xbb,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb1, 0xbe, 0xac,
+		0xb1, 0xc4, 0xaf, 0xc1, 0xcd, 0xc1, 0x95, 0xa4,
+		0x91, 0xad, 0xb6, 0xab, 0x00, 0xa4, 0x00, 0x93,
+		0x00, 0xbd,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbb, 0xa8,
+		0xb3, 0xc5, 0xb2, 0xc1, 0xcd, 0xc2, 0x95, 0xa3,
+		0x90, 0xad, 0xb6, 0xab, 0x00, 0xa6, 0x00, 0x95,
+		0x00, 0xc0,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbb, 0xa8,
+		0xb0, 0xc3, 0xaf, 0xc2, 0xce, 0xc2, 0x94, 0xa2,
+		0x90, 0xac, 0xb6, 0xab, 0x00, 0xa8, 0x00, 0x98,
+		0x00, 0xc3,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xb8, 0xa5,
+		0xb3, 0xc5, 0xb2, 0xc1, 0xcc, 0xc0, 0x95, 0xa2,
+		0x90, 0xad, 0xb6, 0xab, 0x00, 0xaa, 0x00, 0x9a,
+		0x00, 0xc5,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xc0, 0xac,
+		0xb0, 0xc3, 0xaf, 0xc1, 0xcd, 0xc1, 0x95, 0xa2,
+		0x90, 0xac, 0xb5, 0xa9, 0x00, 0xac, 0x00, 0x9c,
+		0x00, 0xc8,
+	}, {
+		0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbd, 0xa8,
+		0xaf, 0xc2, 0xaf, 0xc1, 0xcc, 0xc0, 0x95, 0xa2,
+		0x90, 0xac, 0xb5, 0xaa, 0x00, 0xb1, 0x00, 0xa1,
+		0x00, 0xcc,
+	},
+};
+
+static const struct s6e8aa0_variant s6e8aa0_variants[] = {
+	{
+		.version = 32,
+		.gamma_tables = s6e8aa0_gamma_tables_v32,
+	}, {
+		.version = 96,
+		.gamma_tables = s6e8aa0_gamma_tables_v96,
+	}, {
+		.version = 142,
+		.gamma_tables = s6e8aa0_gamma_tables_v142,
+	}, {
+		.version = 210,
+		.gamma_tables = s6e8aa0_gamma_tables_v142,
+	}
+};
+
+static void s6e8aa0_brightness_set(struct s6e8aa0 *ctx)
+{
+	const u8 *gamma;
+
+	if (ctx->error)
+		return;
+
+	gamma = ctx->variant->gamma_tables[ctx->brightness];
+
+	if (ctx->version >= 142)
+		s6e8aa0_elvss_nvm_set(ctx);
+
+	s6e8aa0_dcs_write(ctx, gamma, GAMMA_TABLE_LEN);
+
+	/* update gamma table. */
+	s6e8aa0_dcs_write_seq_static(ctx, 0xf7, 0x03);
+}
+
+static void s6e8aa0_panel_init(struct s6e8aa0 *ctx)
+{
+	s6e8aa0_apply_level_1_key(ctx);
+	s6e8aa0_apply_level_2_key(ctx);
+	msleep(20);
+
+	s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
+	msleep(40);
+
+	s6e8aa0_panel_cond_set(ctx);
+	s6e8aa0_display_condition_set(ctx);
+	s6e8aa0_brightness_set(ctx);
+	s6e8aa0_etc_source_control(ctx);
+	s6e8aa0_etc_pentile_control(ctx);
+	s6e8aa0_elvss_nvm_set(ctx);
+	s6e8aa0_etc_power_control(ctx);
+	s6e8aa0_etc_elvss_control(ctx);
+	msleep(ctx->init_delay);
+}
+
+static void s6e8aa0_set_maximum_return_packet_size(struct s6e8aa0 *ctx,
+						   u16 size)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	int ret;
+
+	if (ctx->error < 0)
+		return;
+
+	ret = mipi_dsi_set_maximum_return_packet_size(dsi, size);
+	if (ret < 0) {
+		dev_err(ctx->dev,
+			"error %d setting maximum return packet size to %d\n",
+			ret, size);
+		ctx->error = ret;
+	}
+}
+
+static void s6e8aa0_read_mtp_id(struct s6e8aa0 *ctx)
+{
+	u8 id[3];
+	int ret, i;
+
+	ret = s6e8aa0_dcs_read(ctx, 0xd1, id, ARRAY_SIZE(id));
+	if (ret < ARRAY_SIZE(id) || id[0] == 0x00) {
+		dev_err(ctx->dev, "read id failed\n");
+		ctx->error = -EIO;
+		return;
+	}
+
+	dev_info(ctx->dev, "ID: 0x%2x, 0x%2x, 0x%2x\n", id[0], id[1], id[2]);
+
+	for (i = 0; i < ARRAY_SIZE(s6e8aa0_variants); ++i) {
+		if (id[1] == s6e8aa0_variants[i].version)
+			break;
+	}
+	if (i >= ARRAY_SIZE(s6e8aa0_variants)) {
+		dev_err(ctx->dev, "unsupported display version %d\n", id[1]);
+		ctx->error = -EINVAL;
+		return;
+	}
+
+	ctx->variant = &s6e8aa0_variants[i];
+	ctx->version = id[1];
+	ctx->id = id[2];
+}
+
+static void s6e8aa0_set_sequence(struct s6e8aa0 *ctx)
+{
+	s6e8aa0_set_maximum_return_packet_size(ctx, 3);
+	s6e8aa0_read_mtp_id(ctx);
+	s6e8aa0_panel_init(ctx);
+	s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
+}
+
+static int s6e8aa0_power_on(struct s6e8aa0 *ctx)
+{
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	msleep(ctx->power_on_delay);
+
+	gpiod_set_value(ctx->reset_gpio, 0);
+	usleep_range(10000, 11000);
+	gpiod_set_value(ctx->reset_gpio, 1);
+
+	msleep(ctx->reset_delay);
+
+	return 0;
+}
+
+static int s6e8aa0_power_off(struct s6e8aa0 *ctx)
+{
+	return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+}
+
+static int s6e8aa0_disable(struct drm_panel *panel)
+{
+	return 0;
+}
+
+static int s6e8aa0_unprepare(struct drm_panel *panel)
+{
+	struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel);
+
+	s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
+	s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
+	msleep(40);
+
+	s6e8aa0_clear_error(ctx);
+
+	return s6e8aa0_power_off(ctx);
+}
+
+static int s6e8aa0_prepare(struct drm_panel *panel)
+{
+	struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel);
+	int ret;
+
+	ret = s6e8aa0_power_on(ctx);
+	if (ret < 0)
+		return ret;
+
+	s6e8aa0_set_sequence(ctx);
+	ret = ctx->error;
+
+	if (ret < 0)
+		s6e8aa0_unprepare(panel);
+
+	return ret;
+}
+
+static int s6e8aa0_enable(struct drm_panel *panel)
+{
+	return 0;
+}
+
+static int s6e8aa0_get_modes(struct drm_panel *panel)
+{
+	struct drm_connector *connector = panel->connector;
+	struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel);
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_create(connector->dev);
+	if (!mode) {
+		DRM_ERROR("failed to create a new display mode\n");
+		return 0;
+	}
+
+	drm_display_mode_from_videomode(&ctx->vm, mode);
+	mode->width_mm = ctx->width_mm;
+	mode->height_mm = ctx->height_mm;
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs s6e8aa0_drm_funcs = {
+	.disable = s6e8aa0_disable,
+	.unprepare = s6e8aa0_unprepare,
+	.prepare = s6e8aa0_prepare,
+	.enable = s6e8aa0_enable,
+	.get_modes = s6e8aa0_get_modes,
+};
+
+static int s6e8aa0_parse_dt(struct s6e8aa0 *ctx)
+{
+	struct device *dev = ctx->dev;
+	struct device_node *np = dev->of_node;
+	int ret;
+
+	ret = of_get_videomode(np, &ctx->vm, 0);
+	if (ret < 0)
+		return ret;
+
+	of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay);
+	of_property_read_u32(np, "reset-delay", &ctx->reset_delay);
+	of_property_read_u32(np, "init-delay", &ctx->init_delay);
+	of_property_read_u32(np, "panel-width-mm", &ctx->width_mm);
+	of_property_read_u32(np, "panel-height-mm", &ctx->height_mm);
+
+	ctx->flip_horizontal = of_property_read_bool(np, "flip-horizontal");
+	ctx->flip_vertical = of_property_read_bool(np, "flip-vertical");
+
+	return 0;
+}
+
+static int s6e8aa0_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct s6e8aa0 *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(struct s6e8aa0), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	ctx->dev = dev;
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST
+		| MIPI_DSI_MODE_VIDEO_HFP | MIPI_DSI_MODE_VIDEO_HBP
+		| MIPI_DSI_MODE_VIDEO_HSA | MIPI_DSI_MODE_EOT_PACKET
+		| MIPI_DSI_MODE_VSYNC_FLUSH | MIPI_DSI_MODE_VIDEO_AUTO_VERT;
+
+	ret = s6e8aa0_parse_dt(ctx);
+	if (ret < 0)
+		return ret;
+
+	ctx->supplies[0].supply = "vdd3";
+	ctx->supplies[1].supply = "vci";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+				      ctx->supplies);
+	if (ret < 0) {
+		dev_err(dev, "failed to get regulators: %d\n", ret);
+		return ret;
+	}
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(ctx->reset_gpio)) {
+		dev_err(dev, "cannot get reset-gpios %ld\n",
+			PTR_ERR(ctx->reset_gpio));
+		return PTR_ERR(ctx->reset_gpio);
+	}
+
+	ctx->brightness = GAMMA_LEVEL_NUM - 1;
+
+	drm_panel_init(&ctx->panel);
+	ctx->panel.dev = dev;
+	ctx->panel.funcs = &s6e8aa0_drm_funcs;
+
+	ret = drm_panel_add(&ctx->panel);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0)
+		drm_panel_remove(&ctx->panel);
+
+	return ret;
+}
+
+static int s6e8aa0_remove(struct mipi_dsi_device *dsi)
+{
+	struct s6e8aa0 *ctx = mipi_dsi_get_drvdata(dsi);
+
+	mipi_dsi_detach(dsi);
+	drm_panel_remove(&ctx->panel);
+
+	return 0;
+}
+
+static const struct of_device_id s6e8aa0_of_match[] = {
+	{ .compatible = "samsung,s6e8aa0" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, s6e8aa0_of_match);
+
+static struct mipi_dsi_driver s6e8aa0_driver = {
+	.probe = s6e8aa0_probe,
+	.remove = s6e8aa0_remove,
+	.driver = {
+		.name = "panel-samsung-s6e8aa0",
+		.of_match_table = s6e8aa0_of_match,
+	},
+};
+module_mipi_dsi_driver(s6e8aa0_driver);
+
+MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>");
+MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
+MODULE_AUTHOR("Joongmock Shin <jmock.shin@samsung.com>");
+MODULE_AUTHOR("Eunchul Kim <chulspro.kim@samsung.com>");
+MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>");
+MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>");
+MODULE_DESCRIPTION("MIPI-DSI based s6e8aa0 AMOLED LCD Panel Driver");
+MODULE_LICENSE("GPL v2");
-- 
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