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From: YoungJun Cho <yj44.cho@samsung.com>
To: airlied@linux.ie, dri-devel@lists.freedesktop.org
Subject: [RFC v4 PATCH v5 14/18] drm/panel: add S6E3FA0 driver
Date: Wed, 07 May 2014 16:46:35 +0900
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This patch adds MIPI-DSI command mode based S6E3FA0 AMOLED LCD Panel driver.

Changelog v2:
- Declares delay, size properties in probe routine instead of DT
Changelog v3:
- Moves CPU mode timings relevant properties from FIMD DT
  (commented by Laurent Pinchart, Andrzej Hajda)
Changelog v4:
- Enhances readability, vddm readi failure case and removes duplicated power off
  (commented by Andrzej Hajda)
Changelog v5:
- Uses command mode helper functions instead of videomode one

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
---
 drivers/gpu/drm/panel/Kconfig         |    7 +
 drivers/gpu/drm/panel/Makefile        |    1 +
 drivers/gpu/drm/panel/panel-s6e3fa0.c |  570 +++++++++++++++++++++++++++++++++
 3 files changed, 578 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-s6e3fa0.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 4ec874d..fa51237 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -30,4 +30,11 @@ config DRM_PANEL_S6E8AA0
 	select DRM_MIPI_DSI
 	select VIDEOMODE_HELPERS
 
+config DRM_PANEL_S6E3FA0
+	tristate "S6E3FA0 DSI command mode panel"
+	depends on DRM && DRM_PANEL
+	depends on OF
+	select DRM_MIPI_DSI
+	select CMDMODE_HELPERS
+
 endmenu
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 8b92921..85c6738 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -1,3 +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_S6E3FA0) += panel-s6e3fa0.o
diff --git a/drivers/gpu/drm/panel/panel-s6e3fa0.c b/drivers/gpu/drm/panel/panel-s6e3fa0.c
new file mode 100644
index 0000000..a3b2d7e
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-s6e3fa0.c
@@ -0,0 +1,570 @@
+/*
+ * MIPI-DSI based s6e3fa0 AMOLED LCD 5.7 inch panel driver.
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ *
+ * YoungJun Cho <yj44.cho@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_cmdmode.h>
+#include <video/cmdmode.h>
+
+/* Manufacturer Command Set */
+#define MCS_GLOBAL_PARAMETER	0xb0
+#define MCS_AID			0xb2
+#define MCS_ELVSSOPT		0xb6
+#define MCS_TEMPERATURE_SET	0xb8
+#define MCS_PENTILE_CTRL	0xc0
+#define MCS_GAMMA_MODE		0xca
+#define MCS_VDDM		0xd7
+#define MCS_ALS			0xe3
+#define MCS_ERR_FG		0xed
+#define MCS_KEY_LEV1		0xf0
+#define MCS_PANEL_UPDATE	0xf7
+#define MCS_KEY_LEV2		0xfc
+#define MCS_RE			0xfe
+#define MCS_TOUT2_HSYNC		0xff
+
+/* Content Adaptive Brightness Control */
+#define DCS_WRITE_CABC		0x55
+
+#define MTP_ID_LEN		3
+#define GAMMA_LEVEL_NUM		30
+
+#define DEFAULT_VDDM_VAL	0x15
+
+struct s6e3fa0 {
+	struct device				*dev;
+	struct drm_panel			panel;
+
+	struct regulator_bulk_data		supplies[2];
+	struct gpio_desc			*reset_gpio;
+	struct gpio_desc			*det_gpio;
+	struct gpio_desc			*te_gpio;
+	struct cmdmode				cm;
+
+	unsigned int				power_on_delay;
+	unsigned int				reset_delay;
+	unsigned int				init_delay;
+	unsigned int				width_mm;
+	unsigned int				height_mm;
+
+	unsigned char				id;
+	unsigned char				vddm;
+	unsigned int				brightness;
+};
+
+#define panel_to_s6e3fa0(p) container_of(p, struct s6e3fa0, panel)
+
+/* VDD Memory Lookup Table contains paires of {ReadValue, WriteValue} */
+static const unsigned char s6e3fa0_vddm_lut[][2] = {
+	{0x00, 0x0d}, {0x01, 0x0d}, {0x02, 0x0e}, {0x03, 0x0f}, {0x04, 0x10},
+	{0x05, 0x11}, {0x06, 0x12}, {0x07, 0x13}, {0x08, 0x14}, {0x09, 0x15},
+	{0x0a, 0x16}, {0x0b, 0x17}, {0x0c, 0x18}, {0x0d, 0x19}, {0x0e, 0x1a},
+	{0x0f, 0x1b}, {0x10, 0x1c}, {0x11, 0x1d}, {0x12, 0x1e}, {0x13, 0x1f},
+	{0x14, 0x20}, {0x15, 0x21}, {0x16, 0x22}, {0x17, 0x23}, {0x18, 0x24},
+	{0x19, 0x25}, {0x1a, 0x26}, {0x1b, 0x27}, {0x1c, 0x28}, {0x1d, 0x29},
+	{0x1e, 0x2a}, {0x1f, 0x2b}, {0x20, 0x2c}, {0x21, 0x2d}, {0x22, 0x2e},
+	{0x23, 0x2f}, {0x24, 0x30}, {0x25, 0x31}, {0x26, 0x32}, {0x27, 0x33},
+	{0x28, 0x34}, {0x29, 0x35}, {0x2a, 0x36}, {0x2b, 0x37}, {0x2c, 0x38},
+	{0x2d, 0x39}, {0x2e, 0x3a}, {0x2f, 0x3b}, {0x30, 0x3c}, {0x31, 0x3d},
+	{0x32, 0x3e}, {0x33, 0x3f}, {0x34, 0x3f}, {0x35, 0x3f}, {0x36, 0x3f},
+	{0x37, 0x3f}, {0x38, 0x3f}, {0x39, 0x3f}, {0x3a, 0x3f}, {0x3b, 0x3f},
+	{0x3c, 0x3f}, {0x3d, 0x3f}, {0x3e, 0x3f}, {0x3f, 0x3f}, {0x40, 0x0c},
+	{0x41, 0x0b}, {0x42, 0x0a}, {0x43, 0x09}, {0x44, 0x08}, {0x45, 0x07},
+	{0x46, 0x06}, {0x47, 0x05}, {0x48, 0x04}, {0x49, 0x03}, {0x4a, 0x02},
+	{0x4b, 0x01}, {0x4c, 0x40}, {0x4d, 0x41}, {0x4e, 0x42}, {0x4f, 0x43},
+	{0x50, 0x44}, {0x51, 0x45}, {0x52, 0x46}, {0x53, 0x47}, {0x54, 0x48},
+	{0x55, 0x49}, {0x56, 0x4a}, {0x57, 0x4b}, {0x58, 0x4c}, {0x59, 0x4d},
+	{0x5a, 0x4e}, {0x5b, 0x4f}, {0x5c, 0x50}, {0x5d, 0x51}, {0x5e, 0x52},
+	{0x5f, 0x53}, {0x60, 0x54}, {0x61, 0x55}, {0x62, 0x56}, {0x63, 0x57},
+	{0x64, 0x58}, {0x65, 0x59}, {0x66, 0x5a}, {0x67, 0x5b}, {0x68, 0x5c},
+	{0x69, 0x5d}, {0x6a, 0x5e}, {0x6b, 0x5f}, {0x6c, 0x60}, {0x6d, 0x61},
+	{0x6e, 0x62}, {0x6f, 0x63}, {0x70, 0x64}, {0x71, 0x65}, {0x72, 0x66},
+	{0x73, 0x67}, {0x74, 0x68}, {0x75, 0x69}, {0x76, 0x6a}, {0x77, 0x6b},
+	{0x78, 0x6c}, {0x79, 0x6d}, {0x7a, 0x6e}, {0x7b, 0x6f}, {0x7c, 0x70},
+	{0x7d, 0x71}, {0x7e, 0x72}, {0x7f, 0x73},
+};
+
+static int s6e3fa0_dcs_read(struct s6e3fa0 *ctx, unsigned char cmd,
+							void *data, size_t len)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+
+	return mipi_dsi_dcs_read(dsi, dsi->channel, cmd, data, len);
+}
+
+static void s6e3fa0_dcs_write(struct s6e3fa0 *ctx, const void *data, size_t len)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+
+	mipi_dsi_dcs_write(dsi, dsi->channel, data, len);
+}
+
+#define s6e3fa0_dcs_write_seq(ctx, seq...)				\
+do {									\
+	const unsigned char d[] = { seq };				\
+	BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, "too big seq for stack");	\
+	s6e3fa0_dcs_write(ctx, d, ARRAY_SIZE(d));			\
+} while (0)
+
+#define s6e3fa0_dcs_write_seq_static(ctx, seq...)			\
+do {									\
+	static const unsigned char d[] = { seq };			\
+	s6e3fa0_dcs_write(ctx, d, ARRAY_SIZE(d));			\
+} while (0)
+
+static void s6e3fa0_apply_level_1_key(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_KEY_LEV1, 0x5a, 0x5a);
+}
+
+static void s6e3fa0_apply_level_2_key(struct s6e3fa0 *ctx, bool on)
+{
+	if (on)
+		s6e3fa0_dcs_write_seq_static(ctx, MCS_KEY_LEV2, 0x5a, 0x5a);
+	else
+		s6e3fa0_dcs_write_seq_static(ctx, MCS_KEY_LEV2, 0xa5, 0xa5);
+}
+
+static void s6e3fa0_set_maximum_return_packet_size(struct s6e3fa0 *ctx,
+							unsigned int size)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	const struct mipi_dsi_host_ops *ops = dsi->host->ops;
+
+	if (ops && ops->transfer) {
+		unsigned char buf[] = {size, 0};
+		struct mipi_dsi_msg msg = {
+			.channel = dsi->channel,
+			.type = MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE,
+			.tx_len = sizeof(buf),
+			.tx_buf = buf
+		};
+
+		ops->transfer(dsi->host, &msg);
+	}
+}
+
+static void s6e3fa0_read_mtp_id(struct s6e3fa0 *ctx)
+{
+	unsigned char id[MTP_ID_LEN];
+	int ret;
+
+	s6e3fa0_set_maximum_return_packet_size(ctx, MTP_ID_LEN);
+	ret = s6e3fa0_dcs_read(ctx, MIPI_DCS_GET_DISPLAY_ID, id, MTP_ID_LEN);
+	if (ret < MTP_ID_LEN || id[0] == 0x00) {
+		dev_err(ctx->dev, "failed to read id\n");
+		return;
+	}
+
+	dev_info(ctx->dev, "ID: 0x%02x, 0x%02x, 0x%02x\n", id[0], id[1], id[2]);
+
+	ctx->id = id[2];
+}
+
+static void s6e3fa0_read_vddm(struct s6e3fa0 *ctx)
+{
+	unsigned char vddm;
+	int ret;
+
+	s6e3fa0_apply_level_2_key(ctx, true);
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_GLOBAL_PARAMETER, 0x16);
+	s6e3fa0_set_maximum_return_packet_size(ctx, 1);
+	ret = s6e3fa0_dcs_read(ctx, MCS_VDDM, &vddm, 1);
+	s6e3fa0_apply_level_2_key(ctx, false);
+
+	if (ret < 1 || vddm > 0x7f) {
+		dev_err(ctx->dev, "failed to read vddm, use default val.\n");
+		vddm = DEFAULT_VDDM_VAL;
+	}
+
+	ctx->vddm = s6e3fa0_vddm_lut[vddm][1];
+}
+
+static void s6e3fa0_set_pentile_control(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_PENTILE_CTRL, 0x00, 0x02, 0x03,
+					0x32, 0x03, 0x44, 0x44, 0xc0, 0x00,
+					0x1c, 0x20, 0xe8);
+}
+
+static void s6e3fa0_write_ambient_light_sensor(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_ALS, 0xff, 0xff, 0xff, 0xff);
+}
+
+static void s6e3fa0_set_readability_enhancement(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_RE, 0x00, 0x03,
+					MCS_GLOBAL_PARAMETER, 0x2b,
+					MCS_RE, 0xe4);
+}
+
+static void s6e3fa0_set_common_control(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_set_pentile_control(ctx);
+	s6e3fa0_write_ambient_light_sensor(ctx);
+	s6e3fa0_set_readability_enhancement(ctx);
+}
+
+static void s6e3fa0_set_gamma(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_GAMMA_MODE, 0x01, 0x00, 0x01,
+					0x00, 0x01, 0x00, 0x80, 0x80, 0x80,
+					0x80, 0x80, 0x00, 0x80, 0x80, 0x80,
+					0x80, 0x80, 0x00, 0x80, 0x80, 0x80,
+					0x80, 0x80, 0x00, 0x80, 0x80, 0x80,
+					0x80, 0x80, 0x00, 0x00, 0x00);
+}
+
+static void s6e3fa0_set_amoled_impulse_driving(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_AID, 0x00, 0x06, 0x00, 0x06);
+}
+
+static void s6e3fa0_set_elvss(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_ELVSSOPT, 0x88, 0x0a);
+}
+
+static void s6e3fa0_update_panel(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_PANEL_UPDATE, 0x03);
+}
+
+static void s6e3fa0_write_automatic_current_limit(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, DCS_WRITE_CABC, 0x02);
+}
+
+static void s6e3fa0_set_brightness_control(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_set_gamma(ctx);
+	s6e3fa0_set_amoled_impulse_driving(ctx);
+	s6e3fa0_set_elvss(ctx);
+	s6e3fa0_update_panel(ctx);
+	s6e3fa0_write_automatic_current_limit(ctx);
+}
+
+static void s6e3fa0_set_temperature(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MCS_GLOBAL_PARAMETER, 0x05,
+					MCS_TEMPERATURE_SET, 0x19);
+}
+
+static void s6e3fa0_set_elvss_control(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_set_temperature(ctx);
+	s6e3fa0_set_elvss(ctx);
+}
+
+static void s6e3fa0_set_te_on(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_TEAR_ON, 0x00);
+}
+
+static void s6e3fa0_set_etc_and_write_vddm(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_apply_level_2_key(ctx, true);
+	s6e3fa0_dcs_write_seq(ctx, MCS_ERR_FG, 0x0c, 0x04,
+				MCS_TOUT2_HSYNC, 0x01,
+				MCS_GLOBAL_PARAMETER, 0x16,
+				MCS_VDDM, ctx->vddm);
+	s6e3fa0_apply_level_2_key(ctx, false);
+}
+
+static void s6e3fa0_set_etc_condition(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_set_te_on(ctx);
+	s6e3fa0_set_etc_and_write_vddm(ctx);
+}
+
+static void s6e3fa0_panel_init(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_set_common_control(ctx);
+	s6e3fa0_set_brightness_control(ctx);
+	s6e3fa0_set_elvss_control(ctx);
+	s6e3fa0_set_etc_condition(ctx);
+
+	msleep(ctx->init_delay);
+}
+
+static int s6e3fa0_power_off(struct s6e3fa0 *ctx)
+{
+	gpiod_set_value(ctx->reset_gpio, 0);
+
+	return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+}
+
+static int s6e3fa0_power_on(struct s6e3fa0 *ctx)
+{
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+	if (ret)
+		return ret;
+
+	msleep(ctx->power_on_delay);
+
+	gpiod_set_value(ctx->reset_gpio, 1);
+	gpiod_set_value(ctx->reset_gpio, 0);
+	usleep_range(1000, 2000);
+	gpiod_set_value(ctx->reset_gpio, 1);
+
+	msleep(ctx->reset_delay);
+
+	return 0;
+}
+
+static void s6e3fa0_set_sequence(struct s6e3fa0 *ctx)
+{
+	s6e3fa0_apply_level_1_key(ctx);
+	s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
+	msleep(20);
+
+	s6e3fa0_read_mtp_id(ctx);
+	s6e3fa0_read_vddm(ctx);
+
+	s6e3fa0_panel_init(ctx);
+
+	s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
+}
+
+static int s6e3fa0_disable(struct drm_panel *panel)
+{
+	struct s6e3fa0 *ctx = panel_to_s6e3fa0(panel);
+
+	s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
+	s6e3fa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
+	msleep(35);
+
+	return s6e3fa0_power_off(ctx);
+}
+
+static int s6e3fa0_enable(struct drm_panel *panel)
+{
+	struct s6e3fa0 *ctx = panel_to_s6e3fa0(panel);
+	int ret;
+
+	ret = s6e3fa0_power_on(ctx);
+	if (ret)
+		return ret;
+
+	s6e3fa0_set_sequence(ctx);
+
+	return ret;
+}
+
+static int s6e3fa0_get_modes(struct drm_panel *panel)
+{
+	struct drm_connector *connector = panel->connector;
+	struct s6e3fa0 *ctx = panel_to_s6e3fa0(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_cmdmode(&ctx->cm, 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 s6e3fa0_drm_funcs = {
+	.disable	= s6e3fa0_disable,
+	.enable		= s6e3fa0_enable,
+	.get_modes	= s6e3fa0_get_modes,
+};
+
+static int s6e3fa0_parse_dt(struct s6e3fa0 *ctx)
+{
+	struct device *dev = ctx->dev;
+	int ret;
+
+	ret = of_get_cmdmode(dev->of_node, &ctx->cm, 0);
+	if (ret) {
+		dev_err(dev, "failed to get command mode: %d\n", ret);
+		return ret;
+	}
+
+	return ret;
+}
+
+irqreturn_t s6e3fa0_det_interrupt(int irq, void *dev_id)
+{
+	/* TODO */
+	return IRQ_HANDLED;
+}
+
+irqreturn_t s6e3fa0_te_interrupt(int irq, void *dev_id)
+{
+	struct s6e3fa0 *ctx = dev_id;
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	struct mipi_dsi_host *host = dsi->host;
+	const struct mipi_dsi_host_ops *ops = host->ops;
+
+	if (ops && ops->te_handler)
+		ops->te_handler(host);
+
+	return IRQ_HANDLED;
+}
+
+static int s6e3fa0_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct s6e3fa0 *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(struct s6e3fa0), GFP_KERNEL);
+	if (!ctx) {
+		dev_err(dev, "failed to allocate s6e3fa0 structure.\n");
+		return -ENOMEM;
+	}
+
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	ctx->dev = dev;
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+
+	ret = s6e3fa0_parse_dt(ctx);
+	if (ret)
+		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) {
+		dev_err(dev, "failed to get regulators: %d\n", ret);
+		return ret;
+	}
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset");
+	if (IS_ERR(ctx->reset_gpio)) {
+		dev_err(dev, "failed to get reset gpio: %ld\n",
+						PTR_ERR(ctx->reset_gpio));
+		return PTR_ERR(ctx->reset_gpio);
+	}
+	ret = gpiod_direction_output(ctx->reset_gpio, 1);
+	if (ret < 0) {
+		dev_err(dev, "failed to configure reset gpio: %d\n", ret);
+		return ret;
+	}
+
+	ctx->det_gpio = devm_gpiod_get(dev, "det");
+	if (IS_ERR(ctx->det_gpio)) {
+		dev_err(dev, "failed to get det gpio: %ld\n",
+						PTR_ERR(ctx->det_gpio));
+		return PTR_ERR(ctx->det_gpio);
+	}
+	ret = gpiod_direction_input(ctx->det_gpio);
+	if (ret < 0) {
+		dev_err(dev, "failed to configure det gpio: %d\n", ret);
+		return ret;
+	}
+	ret = devm_request_irq(dev, gpiod_to_irq(ctx->det_gpio),
+						s6e3fa0_det_interrupt,
+						IRQF_TRIGGER_FALLING,
+						"oled-det", ctx);
+	if (ret) {
+		dev_err(dev, "failed to request det irq: %d\n", ret);
+		return ret;
+	}
+
+	ctx->te_gpio = devm_gpiod_get(dev, "te");
+	if (IS_ERR(ctx->te_gpio)) {
+		dev_err(dev, "failed to get te gpio: %ld\n",
+						PTR_ERR(ctx->te_gpio));
+		return PTR_ERR(ctx->te_gpio);
+	}
+	ret = gpiod_direction_input(ctx->te_gpio);
+	if (ret < 0) {
+		dev_err(dev, "failed to configure te gpio: %d\n", ret);
+		return ret;
+	}
+	ret = devm_request_irq(dev, gpiod_to_irq(ctx->te_gpio),
+						s6e3fa0_te_interrupt,
+						IRQF_TRIGGER_RISING,
+						"TE", ctx);
+	if (ret) {
+		dev_err(dev, "failed to request det irq: %d\n", ret);
+		return ret;
+	}
+
+	ctx->power_on_delay = 10;
+	ctx->reset_delay = 5;
+	ctx->init_delay = 120;
+	ctx->width_mm = 71;
+	ctx->height_mm = 126;
+
+	ctx->brightness = GAMMA_LEVEL_NUM - 1;
+
+	drm_panel_init(&ctx->panel);
+	ctx->panel.dev = dev;
+	ctx->panel.funcs = &s6e3fa0_drm_funcs;
+
+	ret = drm_panel_add(&ctx->panel);
+	if (ret)
+		return ret;
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret)
+		drm_panel_remove(&ctx->panel);
+
+	return ret;
+}
+
+static int s6e3fa0_remove(struct mipi_dsi_device *dsi)
+{
+	struct s6e3fa0 *ctx = mipi_dsi_get_drvdata(dsi);
+
+	mipi_dsi_detach(dsi);
+	drm_panel_remove(&ctx->panel);
+
+	return 0;
+}
+
+static struct of_device_id s6e3fa0_of_match[] = {
+	{ .compatible = "samsung,s6e3fa0" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, s6e3fa0_of_match);
+
+static struct mipi_dsi_driver s6e3fa0_driver = {
+	.probe = s6e3fa0_probe,
+	.remove = s6e3fa0_remove,
+	.driver = {
+		.name = "panel_s6e3fa0",
+		.owner = THIS_MODULE,
+		.of_match_table = s6e3fa0_of_match,
+	},
+};
+module_mipi_dsi_driver(s6e3fa0_driver);
+
+MODULE_AUTHOR("YoungJun Cho <yj44.cho@samsung.com>");
+MODULE_DESCRIPTION("MIPI-DSI based s6e3fa0 AMOLED LCD Panel Driver");
+MODULE_LICENSE("GPL v2");