drivers/gpu/drm/panel/panel-innolux-himax8279d.c - third_party/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2021, Huaqin Telecom Technology Co., Ltd
  * Author: Zhengqiao Xia <xiazhengqiao@huaqin.corp-partner.google.com>
  */

 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/regulator/consumer.h>

 #include <drm/drm_connector.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_panel.h>

 #include <video/mipi_display.h>

 struct panel_desc {
 	const struct drm_display_mode *modes;
 	unsigned int bpc;

 	/**
 	 * @width_mm: width of the panel's active display area
 	 * @height_mm: height of the panel's active display area
 	 */
 	struct {
 		unsigned int width_mm;
 		unsigned int height_mm;
 	} size;

 	unsigned long mode_flags;
 	enum mipi_dsi_pixel_format format;
 	const struct panel_init_cmd *init_cmds;
 	unsigned int lanes;
 	bool discharge_on_disable;
 };

 struct inx_panel {
 	struct drm_panel base;
 	struct mipi_dsi_device *dsi;

 	const struct panel_desc *desc;

 	enum drm_panel_orientation orientation;
 	struct regulator *pp1800;
 	struct regulator *avee;
 	struct regulator *avdd;
 	struct gpio_desc *enable_gpio;

 	bool prepared;
 };

 enum dsi_cmd_type {
 	INIT_DCS_CMD,
 	DELAY_CMD,
 };

 struct panel_init_cmd {
 	enum dsi_cmd_type type;
 	size_t len;
 	const char *data;
 };

 #define _INIT_DCS_CMD(...) { \
 	.type = INIT_DCS_CMD, \
 	.len = sizeof((char[]){__VA_ARGS__}), \
 	.data = (char[]){__VA_ARGS__} }

 #define _INIT_DELAY_CMD(...) { \
 	.type = DELAY_CMD,\
 	.len = sizeof((char[]){__VA_ARGS__}), \
 	.data = (char[]){__VA_ARGS__} }

 static const struct panel_init_cmd starry_qfh032011_53g_init_cmd[] = {
 	_INIT_DCS_CMD(0xB0, 0x01),
 	_INIT_DCS_CMD(0xC3, 0x4F),
 	_INIT_DCS_CMD(0xC4, 0x40),
 	_INIT_DCS_CMD(0xC5, 0x40),
 	_INIT_DCS_CMD(0xC6, 0x40),
 	_INIT_DCS_CMD(0xC7, 0x40),
 	_INIT_DCS_CMD(0xC8, 0x4D),
 	_INIT_DCS_CMD(0xC9, 0x52),
 	_INIT_DCS_CMD(0xCA, 0x51),
 	_INIT_DCS_CMD(0xCD, 0x5D),
 	_INIT_DCS_CMD(0xCE, 0x5B),
 	_INIT_DCS_CMD(0xCF, 0x4B),
 	_INIT_DCS_CMD(0xD0, 0x49),
 	_INIT_DCS_CMD(0xD1, 0x47),
 	_INIT_DCS_CMD(0xD2, 0x45),
 	_INIT_DCS_CMD(0xD3, 0x41),
 	_INIT_DCS_CMD(0xD7, 0x50),
 	_INIT_DCS_CMD(0xD8, 0x40),
 	_INIT_DCS_CMD(0xD9, 0x40),
 	_INIT_DCS_CMD(0xDA, 0x40),
 	_INIT_DCS_CMD(0xDB, 0x40),
 	_INIT_DCS_CMD(0xDC, 0x4E),
 	_INIT_DCS_CMD(0xDD, 0x52),
 	_INIT_DCS_CMD(0xDE, 0x51),
 	_INIT_DCS_CMD(0xE1, 0x5E),
 	_INIT_DCS_CMD(0xE2, 0x5C),
 	_INIT_DCS_CMD(0xE3, 0x4C),
 	_INIT_DCS_CMD(0xE4, 0x4A),
 	_INIT_DCS_CMD(0xE5, 0x48),
 	_INIT_DCS_CMD(0xE6, 0x46),
 	_INIT_DCS_CMD(0xE7, 0x42),
 	_INIT_DCS_CMD(0xB0, 0x03),
 	_INIT_DCS_CMD(0xBE, 0x03),
 	_INIT_DCS_CMD(0xCC, 0x44),
 	_INIT_DCS_CMD(0xC8, 0x07),
 	_INIT_DCS_CMD(0xC9, 0x05),
 	_INIT_DCS_CMD(0xCA, 0x42),
 	_INIT_DCS_CMD(0xCD, 0x3E),
 	_INIT_DCS_CMD(0xCF, 0x60),
 	_INIT_DCS_CMD(0xD2, 0x04),
 	_INIT_DCS_CMD(0xD3, 0x04),
 	_INIT_DCS_CMD(0xD4, 0x01),
 	_INIT_DCS_CMD(0xD5, 0x00),
 	_INIT_DCS_CMD(0xD6, 0x03),
 	_INIT_DCS_CMD(0xD7, 0x04),
 	_INIT_DCS_CMD(0xD9, 0x01),
 	_INIT_DCS_CMD(0xDB, 0x01),
 	_INIT_DCS_CMD(0xE4, 0xF0),
 	_INIT_DCS_CMD(0xE5, 0x0A),
 	_INIT_DCS_CMD(0xB0, 0x00),
 	_INIT_DCS_CMD(0xCC, 0x08),
 	_INIT_DCS_CMD(0xC2, 0x08),
 	_INIT_DCS_CMD(0xC4, 0x10),
 	_INIT_DCS_CMD(0xB0, 0x02),
 	_INIT_DCS_CMD(0xC0, 0x00),
 	_INIT_DCS_CMD(0xC1, 0x0A),
 	_INIT_DCS_CMD(0xC2, 0x20),
 	_INIT_DCS_CMD(0xC3, 0x24),
 	_INIT_DCS_CMD(0xC4, 0x23),
 	_INIT_DCS_CMD(0xC5, 0x29),
 	_INIT_DCS_CMD(0xC6, 0x23),
 	_INIT_DCS_CMD(0xC7, 0x1C),
 	_INIT_DCS_CMD(0xC8, 0x19),
 	_INIT_DCS_CMD(0xC9, 0x17),
 	_INIT_DCS_CMD(0xCA, 0x17),
 	_INIT_DCS_CMD(0xCB, 0x18),
 	_INIT_DCS_CMD(0xCC, 0x1A),
 	_INIT_DCS_CMD(0xCD, 0x1E),
 	_INIT_DCS_CMD(0xCE, 0x20),
 	_INIT_DCS_CMD(0xCF, 0x23),
 	_INIT_DCS_CMD(0xD0, 0x07),
 	_INIT_DCS_CMD(0xD1, 0x00),
 	_INIT_DCS_CMD(0xD2, 0x00),
 	_INIT_DCS_CMD(0xD3, 0x0A),
 	_INIT_DCS_CMD(0xD4, 0x13),
 	_INIT_DCS_CMD(0xD5, 0x1C),
 	_INIT_DCS_CMD(0xD6, 0x1A),
 	_INIT_DCS_CMD(0xD7, 0x13),
 	_INIT_DCS_CMD(0xD8, 0x17),
 	_INIT_DCS_CMD(0xD9, 0x1C),
 	_INIT_DCS_CMD(0xDA, 0x19),
 	_INIT_DCS_CMD(0xDB, 0x17),
 	_INIT_DCS_CMD(0xDC, 0x17),
 	_INIT_DCS_CMD(0xDD, 0x18),
 	_INIT_DCS_CMD(0xDE, 0x1A),
 	_INIT_DCS_CMD(0xDF, 0x1E),
 	_INIT_DCS_CMD(0xE0, 0x20),
 	_INIT_DCS_CMD(0xE1, 0x23),
 	_INIT_DCS_CMD(0xE2, 0x07),
 	_INIT_DCS_CMD(0X11),
 	_INIT_DELAY_CMD(120),
 	_INIT_DCS_CMD(0X29),
 	_INIT_DELAY_CMD(80),
 	{},
 };

 static inline struct inx_panel *to_inx_panel(struct drm_panel *panel)
 {
 	return container_of(panel, struct inx_panel, base);
 }

 static int inx_panel_init_dcs_cmd(struct inx_panel *inx)
 {
 	struct mipi_dsi_device *dsi = inx->dsi;
 	struct drm_panel *panel = &inx->base;
 	int i, err = 0;

 	if (inx->desc->init_cmds) {
 		const struct panel_init_cmd *init_cmds = inx->desc->init_cmds;

 		for (i = 0; init_cmds[i].len != 0; i++) {
 			const struct panel_init_cmd *cmd = &init_cmds[i];

 			switch (cmd->type) {
 			case DELAY_CMD:
 				msleep(cmd->data[0]);
 				err = 0;
 				break;

 			case INIT_DCS_CMD:
 				err = mipi_dsi_dcs_write(dsi, cmd->data[0],
 							 cmd->len <= 1 ? NULL :
 							 &cmd->data[1],
 							 cmd->len - 1);
 				break;

 			default:
 				err = -EINVAL;
 			}

 			if (err < 0) {
 				dev_err(panel->dev,
 					"failed to write command %u\n", i);
 				return err;
 			}
 		}
 	}
 	return 0;
 }

 static int inx_panel_enter_sleep_mode(struct inx_panel *inx)
 {
 	struct mipi_dsi_device *dsi = inx->dsi;
 	int ret;

 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;

 	ret = mipi_dsi_dcs_set_display_off(dsi);
 	if (ret < 0)
 		return ret;

 	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static int inx_panel_unprepare(struct drm_panel *panel)
 {
 	struct inx_panel *inx = to_inx_panel(panel);
 	int ret;

 	if (!inx->prepared)
 		return 0;

 	ret = inx_panel_enter_sleep_mode(inx);
 	if (ret < 0) {
 		dev_err(panel->dev, "failed to set panel off: %d\n", ret);
 		return ret;
 	}

 	msleep(150);

 	if (inx->desc->discharge_on_disable) {
 		regulator_disable(inx->avee);
 		regulator_disable(inx->avdd);
 		usleep_range(5000, 7000);
 		gpiod_set_value(inx->enable_gpio, 0);
 		usleep_range(5000, 7000);
 		regulator_disable(inx->pp1800);
 	} else {
 		gpiod_set_value(inx->enable_gpio, 0);
 		usleep_range(500, 1000);
 		regulator_disable(inx->avee);
 		regulator_disable(inx->avdd);
 		usleep_range(5000, 7000);
 		regulator_disable(inx->pp1800);
 	}

 	inx->prepared = false;

 	return 0;
 }

 static int inx_panel_prepare(struct drm_panel *panel)
 {
 	struct inx_panel *inx = to_inx_panel(panel);
 	int ret;

 	if (inx->prepared)
 		return 0;

 	gpiod_set_value(inx->enable_gpio, 0);
 	usleep_range(1000, 1500);

 	ret = regulator_enable(inx->pp1800);
 	if (ret < 0)
 		return ret;

 	usleep_range(3000, 5000);

 	ret = regulator_enable(inx->avdd);
 	if (ret < 0)
 		goto poweroff1v8;
 	ret = regulator_enable(inx->avee);
 	if (ret < 0)
 		goto poweroffavdd;

 	usleep_range(5000, 10000);

 	gpiod_set_value(inx->enable_gpio, 1);
 	usleep_range(1000, 2000);
 	gpiod_set_value(inx->enable_gpio, 0);
 	usleep_range(1000, 2000);
 	gpiod_set_value(inx->enable_gpio, 1);
 	usleep_range(6000, 10000);

 	ret = inx_panel_init_dcs_cmd(inx);
 	if (ret < 0) {
 		dev_err(panel->dev, "failed to init panel: %d\n", ret);
 		goto poweroff;
 	}

 	inx->prepared = true;

 	return 0;

 poweroff:
 	regulator_disable(inx->avee);
 poweroffavdd:
 	regulator_disable(inx->avdd);
 poweroff1v8:
 	usleep_range(5000, 7000);
 	regulator_disable(inx->pp1800);
 	gpiod_set_value(inx->enable_gpio, 0);

 	return ret;
 }

 static int inx_panel_enable(struct drm_panel *panel)
 {
 	msleep(130);
 	return 0;
 }

 static const struct drm_display_mode starry_qfh032011_53g_default_mode = {
 	.clock = 165731,
 	.hdisplay = 1200,
 	.hsync_start = 1200 + 100,
 	.hsync_end = 1200 + 100 + 10,
 	.htotal = 1200 + 100 + 10 + 100,
 	.vdisplay = 1920,
 	.vsync_start = 1920 + 14,
 	.vsync_end = 1920 + 14 + 10,
 	.vtotal = 1920 + 14 + 10 + 15,
 };

 static const struct panel_desc starry_qfh032011_53g_desc = {
 	.modes = &starry_qfh032011_53g_default_mode,
 	.bpc = 8,
 	.size = {
 		.width_mm = 135,
 		.height_mm = 216,
 	},
 	.lanes = 4,
 	.format = MIPI_DSI_FMT_RGB888,
 	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 		      MIPI_DSI_MODE_LPM,
 	.init_cmds = starry_qfh032011_53g_init_cmd,
 	.discharge_on_disable = false,
 };

 static int inx_panel_get_modes(struct drm_panel *panel,
 			       struct drm_connector *connector)
 {
 	struct inx_panel *inx = to_inx_panel(panel);
 	const struct drm_display_mode *m = inx->desc->modes;
 	struct drm_display_mode *mode;

 	mode = drm_mode_duplicate(connector->dev, m);
 	if (!mode) {
 		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
 			m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
 		return -ENOMEM;
 	}

 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
 	drm_mode_set_name(mode);
 	drm_mode_probed_add(connector, mode);

 	connector->display_info.width_mm = inx->desc->size.width_mm;
 	connector->display_info.height_mm = inx->desc->size.height_mm;
 	connector->display_info.bpc = inx->desc->bpc;
 	drm_connector_set_panel_orientation(connector, inx->orientation);

 	return 1;
 }

 static const struct drm_panel_funcs inx_panel_funcs = {
 	.unprepare = inx_panel_unprepare,
 	.prepare = inx_panel_prepare,
 	.enable = inx_panel_enable,
 	.get_modes = inx_panel_get_modes,
 };

 static int inx_panel_add(struct inx_panel *inx)
 {
 	struct device *dev = &inx->dsi->dev;
 	int err;

 	inx->avdd = devm_regulator_get(dev, "avdd");
 	if (IS_ERR(inx->avdd))
 		return PTR_ERR(inx->avdd);

 	inx->avee = devm_regulator_get(dev, "avee");
 	if (IS_ERR(inx->avee))
 		return PTR_ERR(inx->avee);

 	inx->pp1800 = devm_regulator_get(dev, "pp1800");
 	if (IS_ERR(inx->pp1800))
 		return PTR_ERR(inx->pp1800);

 	inx->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
 	if (IS_ERR(inx->enable_gpio)) {
 		dev_err(dev, "cannot get reset-gpios %ld\n",
 			PTR_ERR(inx->enable_gpio));
 		return PTR_ERR(inx->enable_gpio);
 	}

 	gpiod_set_value(inx->enable_gpio, 0);

 	drm_panel_init(&inx->base, dev, &inx_panel_funcs,
 		       DRM_MODE_CONNECTOR_DSI);
 	err = of_drm_get_panel_orientation(dev->of_node, &inx->orientation);
 	if (err < 0) {
 		dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
 		return err;
 	}

 	err = drm_panel_of_backlight(&inx->base);
 	if (err)
 		return err;

 	inx->base.funcs = &inx_panel_funcs;
 	inx->base.dev = &inx->dsi->dev;

 	drm_panel_add(&inx->base);

 	return 0;
 }

 static int inx_panel_probe(struct mipi_dsi_device *dsi)
 {
 	struct inx_panel *inx;
 	int ret;
 	const struct panel_desc *desc;

 	inx = devm_kzalloc(&dsi->dev, sizeof(*inx), GFP_KERNEL);
 	if (!inx)
 		return -ENOMEM;

 	desc = of_device_get_match_data(&dsi->dev);
 	dsi->lanes = desc->lanes;
 	dsi->format = desc->format;
 	dsi->mode_flags = desc->mode_flags;
 	inx->desc = desc;
 	inx->dsi = dsi;
 	ret = inx_panel_add(inx);
 	if (ret < 0)
 		return ret;

 	mipi_dsi_set_drvdata(dsi, inx);

 	ret = mipi_dsi_attach(dsi);
 	if (ret)
 		drm_panel_remove(&inx->base);

 	return ret;
 }

 static void inx_panel_shutdown(struct mipi_dsi_device *dsi)
 {
 	struct inx_panel *inx = mipi_dsi_get_drvdata(dsi);

 	drm_panel_disable(&inx->base);
 	drm_panel_unprepare(&inx->base);
 }

 static int inx_panel_remove(struct mipi_dsi_device *dsi)
 {
 	struct inx_panel *inx = mipi_dsi_get_drvdata(dsi);
 	int ret;

 	inx_panel_shutdown(dsi);

 	ret = mipi_dsi_detach(dsi);
 	if (ret < 0)
 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);

 	if (inx->base.dev)
 		drm_panel_remove(&inx->base);

 	return 0;
 }

 static const struct of_device_id inx_of_match[] = {
 	{ .compatible = "starry,2081101qfh032011-53g",
 	  .data = &starry_qfh032011_53g_desc
 	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, inx_of_match);

 static struct mipi_dsi_driver inx_panel_driver = {
 	.driver = {
 		.name = "panel-innolux-himax8279d",
 		.of_match_table = inx_of_match,
 	},
 	.probe = inx_panel_probe,
 	.remove = inx_panel_remove,
 	.shutdown = inx_panel_shutdown,
 };
 module_mipi_dsi_driver(inx_panel_driver);

 MODULE_AUTHOR("Zhengqiao Xia <xiazhengqiao@huaqin.corp-partner.google.com>");
 MODULE_DESCRIPTION("INNOLUX HIMAX8279D 1200x1920 video mode panel driver");
 MODULE_LICENSE("GPL v2");
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (c) 2021, Huaqin Telecom Technology Co., Ltd
	* Author: Zhengqiao Xia <xiazhengqiao@huaqin.corp-partner.google.com>
	*/

	#include <linux/delay.h>
	#include <linux/gpio/consumer.h>
	#include <linux/module.h>
	#include <linux/of.h>
	#include <linux/of_device.h>
	#include <linux/regulator/consumer.h>

	#include <drm/drm_connector.h>
	#include <drm/drm_crtc.h>
	#include <drm/drm_mipi_dsi.h>
	#include <drm/drm_panel.h>

	#include <video/mipi_display.h>

	struct panel_desc {
	const struct drm_display_mode *modes;
	unsigned int bpc;

	/**
	* @width_mm: width of the panel's active display area
	* @height_mm: height of the panel's active display area
	*/
	struct {
	unsigned int width_mm;
	unsigned int height_mm;
	} size;

	unsigned long mode_flags;
	enum mipi_dsi_pixel_format format;
	const struct panel_init_cmd *init_cmds;
	unsigned int lanes;
	bool discharge_on_disable;
	};

	struct inx_panel {
	struct drm_panel base;
	struct mipi_dsi_device *dsi;

	const struct panel_desc *desc;

	enum drm_panel_orientation orientation;
	struct regulator *pp1800;
	struct regulator *avee;
	struct regulator *avdd;
	struct gpio_desc *enable_gpio;

	bool prepared;
	};

	enum dsi_cmd_type {
	INIT_DCS_CMD,
	DELAY_CMD,
	};

	struct panel_init_cmd {
	enum dsi_cmd_type type;
	size_t len;
	const char *data;
	};

	#define _INIT_DCS_CMD(...) { \
	.type = INIT_DCS_CMD, \
	.len = sizeof((char[]){__VA_ARGS__}), \
	.data = (char[]){__VA_ARGS__} }

	#define _INIT_DELAY_CMD(...) { \
	.type = DELAY_CMD,\
	.len = sizeof((char[]){__VA_ARGS__}), \
	.data = (char[]){__VA_ARGS__} }

	static const struct panel_init_cmd starry_qfh032011_53g_init_cmd[] = {
	_INIT_DCS_CMD(0xB0, 0x01),
	_INIT_DCS_CMD(0xC3, 0x4F),
	_INIT_DCS_CMD(0xC4, 0x40),
	_INIT_DCS_CMD(0xC5, 0x40),
	_INIT_DCS_CMD(0xC6, 0x40),
	_INIT_DCS_CMD(0xC7, 0x40),
	_INIT_DCS_CMD(0xC8, 0x4D),
	_INIT_DCS_CMD(0xC9, 0x52),
	_INIT_DCS_CMD(0xCA, 0x51),
	_INIT_DCS_CMD(0xCD, 0x5D),
	_INIT_DCS_CMD(0xCE, 0x5B),
	_INIT_DCS_CMD(0xCF, 0x4B),
	_INIT_DCS_CMD(0xD0, 0x49),
	_INIT_DCS_CMD(0xD1, 0x47),
	_INIT_DCS_CMD(0xD2, 0x45),
	_INIT_DCS_CMD(0xD3, 0x41),
	_INIT_DCS_CMD(0xD7, 0x50),
	_INIT_DCS_CMD(0xD8, 0x40),
	_INIT_DCS_CMD(0xD9, 0x40),
	_INIT_DCS_CMD(0xDA, 0x40),
	_INIT_DCS_CMD(0xDB, 0x40),
	_INIT_DCS_CMD(0xDC, 0x4E),
	_INIT_DCS_CMD(0xDD, 0x52),
	_INIT_DCS_CMD(0xDE, 0x51),
	_INIT_DCS_CMD(0xE1, 0x5E),
	_INIT_DCS_CMD(0xE2, 0x5C),
	_INIT_DCS_CMD(0xE3, 0x4C),
	_INIT_DCS_CMD(0xE4, 0x4A),
	_INIT_DCS_CMD(0xE5, 0x48),
	_INIT_DCS_CMD(0xE6, 0x46),
	_INIT_DCS_CMD(0xE7, 0x42),
	_INIT_DCS_CMD(0xB0, 0x03),
	_INIT_DCS_CMD(0xBE, 0x03),
	_INIT_DCS_CMD(0xCC, 0x44),
	_INIT_DCS_CMD(0xC8, 0x07),
	_INIT_DCS_CMD(0xC9, 0x05),
	_INIT_DCS_CMD(0xCA, 0x42),
	_INIT_DCS_CMD(0xCD, 0x3E),
	_INIT_DCS_CMD(0xCF, 0x60),
	_INIT_DCS_CMD(0xD2, 0x04),
	_INIT_DCS_CMD(0xD3, 0x04),
	_INIT_DCS_CMD(0xD4, 0x01),
	_INIT_DCS_CMD(0xD5, 0x00),
	_INIT_DCS_CMD(0xD6, 0x03),
	_INIT_DCS_CMD(0xD7, 0x04),
	_INIT_DCS_CMD(0xD9, 0x01),
	_INIT_DCS_CMD(0xDB, 0x01),
	_INIT_DCS_CMD(0xE4, 0xF0),
	_INIT_DCS_CMD(0xE5, 0x0A),
	_INIT_DCS_CMD(0xB0, 0x00),
	_INIT_DCS_CMD(0xCC, 0x08),
	_INIT_DCS_CMD(0xC2, 0x08),
	_INIT_DCS_CMD(0xC4, 0x10),
	_INIT_DCS_CMD(0xB0, 0x02),
	_INIT_DCS_CMD(0xC0, 0x00),
	_INIT_DCS_CMD(0xC1, 0x0A),
	_INIT_DCS_CMD(0xC2, 0x20),
	_INIT_DCS_CMD(0xC3, 0x24),
	_INIT_DCS_CMD(0xC4, 0x23),
	_INIT_DCS_CMD(0xC5, 0x29),
	_INIT_DCS_CMD(0xC6, 0x23),
	_INIT_DCS_CMD(0xC7, 0x1C),
	_INIT_DCS_CMD(0xC8, 0x19),
	_INIT_DCS_CMD(0xC9, 0x17),
	_INIT_DCS_CMD(0xCA, 0x17),
	_INIT_DCS_CMD(0xCB, 0x18),
	_INIT_DCS_CMD(0xCC, 0x1A),
	_INIT_DCS_CMD(0xCD, 0x1E),
	_INIT_DCS_CMD(0xCE, 0x20),
	_INIT_DCS_CMD(0xCF, 0x23),
	_INIT_DCS_CMD(0xD0, 0x07),
	_INIT_DCS_CMD(0xD1, 0x00),
	_INIT_DCS_CMD(0xD2, 0x00),
	_INIT_DCS_CMD(0xD3, 0x0A),
	_INIT_DCS_CMD(0xD4, 0x13),
	_INIT_DCS_CMD(0xD5, 0x1C),
	_INIT_DCS_CMD(0xD6, 0x1A),
	_INIT_DCS_CMD(0xD7, 0x13),
	_INIT_DCS_CMD(0xD8, 0x17),
	_INIT_DCS_CMD(0xD9, 0x1C),
	_INIT_DCS_CMD(0xDA, 0x19),
	_INIT_DCS_CMD(0xDB, 0x17),
	_INIT_DCS_CMD(0xDC, 0x17),
	_INIT_DCS_CMD(0xDD, 0x18),
	_INIT_DCS_CMD(0xDE, 0x1A),
	_INIT_DCS_CMD(0xDF, 0x1E),
	_INIT_DCS_CMD(0xE0, 0x20),
	_INIT_DCS_CMD(0xE1, 0x23),
	_INIT_DCS_CMD(0xE2, 0x07),
	_INIT_DCS_CMD(0X11),
	_INIT_DELAY_CMD(120),
	_INIT_DCS_CMD(0X29),
	_INIT_DELAY_CMD(80),
	{},
	};

	static inline struct inx_panel to_inx_panel(struct drm_panel panel)
	{
	return container_of(panel, struct inx_panel, base);
	}

	static int inx_panel_init_dcs_cmd(struct inx_panel *inx)
	{
	struct mipi_dsi_device *dsi = inx->dsi;
	struct drm_panel *panel = &inx->base;
	int i, err = 0;

	if (inx->desc->init_cmds) {
	const struct panel_init_cmd *init_cmds = inx->desc->init_cmds;

	for (i = 0; init_cmds[i].len != 0; i++) {
	const struct panel_init_cmd *cmd = &init_cmds[i];

	switch (cmd->type) {
	case DELAY_CMD:
	msleep(cmd->data[0]);
	err = 0;
	break;

	case INIT_DCS_CMD:
	err = mipi_dsi_dcs_write(dsi, cmd->data[0],
	cmd->len <= 1 ? NULL :
	&cmd->data[1],
	cmd->len - 1);
	break;

	default:
	err = -EINVAL;
	}

	if (err < 0) {
	dev_err(panel->dev,
	"failed to write command %u\n", i);
	return err;
	}
	}
	}
	return 0;
	}

	static int inx_panel_enter_sleep_mode(struct inx_panel *inx)
	{
	struct mipi_dsi_device *dsi = inx->dsi;
	int ret;

	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;

	ret = mipi_dsi_dcs_set_display_off(dsi);
	if (ret < 0)
	return ret;

	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
	if (ret < 0)
	return ret;

	return 0;
	}

	static int inx_panel_unprepare(struct drm_panel *panel)
	{
	struct inx_panel *inx = to_inx_panel(panel);
	int ret;

	if (!inx->prepared)
	return 0;

	ret = inx_panel_enter_sleep_mode(inx);
	if (ret < 0) {
	dev_err(panel->dev, "failed to set panel off: %d\n", ret);
	return ret;
	}

	msleep(150);

	if (inx->desc->discharge_on_disable) {
	regulator_disable(inx->avee);
	regulator_disable(inx->avdd);
	usleep_range(5000, 7000);
	gpiod_set_value(inx->enable_gpio, 0);
	usleep_range(5000, 7000);
	regulator_disable(inx->pp1800);
	} else {
	gpiod_set_value(inx->enable_gpio, 0);
	usleep_range(500, 1000);
	regulator_disable(inx->avee);
	regulator_disable(inx->avdd);
	usleep_range(5000, 7000);
	regulator_disable(inx->pp1800);
	}

	inx->prepared = false;

	return 0;
	}

	static int inx_panel_prepare(struct drm_panel *panel)
	{
	struct inx_panel *inx = to_inx_panel(panel);
	int ret;

	if (inx->prepared)
	return 0;

	gpiod_set_value(inx->enable_gpio, 0);
	usleep_range(1000, 1500);

	ret = regulator_enable(inx->pp1800);
	if (ret < 0)
	return ret;

	usleep_range(3000, 5000);

	ret = regulator_enable(inx->avdd);
	if (ret < 0)
	goto poweroff1v8;
	ret = regulator_enable(inx->avee);
	if (ret < 0)
	goto poweroffavdd;

	usleep_range(5000, 10000);

	gpiod_set_value(inx->enable_gpio, 1);
	usleep_range(1000, 2000);
	gpiod_set_value(inx->enable_gpio, 0);
	usleep_range(1000, 2000);
	gpiod_set_value(inx->enable_gpio, 1);
	usleep_range(6000, 10000);

	ret = inx_panel_init_dcs_cmd(inx);
	if (ret < 0) {
	dev_err(panel->dev, "failed to init panel: %d\n", ret);
	goto poweroff;
	}

	inx->prepared = true;

	return 0;

	poweroff:
	regulator_disable(inx->avee);
	poweroffavdd:
	regulator_disable(inx->avdd);
	poweroff1v8:
	usleep_range(5000, 7000);
	regulator_disable(inx->pp1800);
	gpiod_set_value(inx->enable_gpio, 0);

	return ret;
	}

	static int inx_panel_enable(struct drm_panel *panel)
	{
	msleep(130);
	return 0;
	}

	static const struct drm_display_mode starry_qfh032011_53g_default_mode = {
	.clock = 165731,
	.hdisplay = 1200,
	.hsync_start = 1200 + 100,
	.hsync_end = 1200 + 100 + 10,
	.htotal = 1200 + 100 + 10 + 100,
	.vdisplay = 1920,
	.vsync_start = 1920 + 14,
	.vsync_end = 1920 + 14 + 10,
	.vtotal = 1920 + 14 + 10 + 15,
	};

	static const struct panel_desc starry_qfh032011_53g_desc = {
	.modes = &starry_qfh032011_53g_default_mode,
	.bpc = 8,
	.size = {
	.width_mm = 135,
	.height_mm = 216,
	},
	.lanes = 4,
	.format = MIPI_DSI_FMT_RGB888,
	.mode_flags = MIPI_DSI_MODE_VIDEO \| MIPI_DSI_MODE_VIDEO_SYNC_PULSE \|
	MIPI_DSI_MODE_LPM,
	.init_cmds = starry_qfh032011_53g_init_cmd,
	.discharge_on_disable = false,
	};

	static int inx_panel_get_modes(struct drm_panel *panel,
	struct drm_connector *connector)
	{
	struct inx_panel *inx = to_inx_panel(panel);
	const struct drm_display_mode *m = inx->desc->modes;
	struct drm_display_mode *mode;

	mode = drm_mode_duplicate(connector->dev, m);
	if (!mode) {
	dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
	m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
	return -ENOMEM;
	}

	mode->type = DRM_MODE_TYPE_DRIVER \| DRM_MODE_TYPE_PREFERRED;
	drm_mode_set_name(mode);
	drm_mode_probed_add(connector, mode);

	connector->display_info.width_mm = inx->desc->size.width_mm;
	connector->display_info.height_mm = inx->desc->size.height_mm;
	connector->display_info.bpc = inx->desc->bpc;
	drm_connector_set_panel_orientation(connector, inx->orientation);

	return 1;
	}

	static const struct drm_panel_funcs inx_panel_funcs = {
	.unprepare = inx_panel_unprepare,
	.prepare = inx_panel_prepare,
	.enable = inx_panel_enable,
	.get_modes = inx_panel_get_modes,
	};

	static int inx_panel_add(struct inx_panel *inx)
	{
	struct device *dev = &inx->dsi->dev;
	int err;

	inx->avdd = devm_regulator_get(dev, "avdd");
	if (IS_ERR(inx->avdd))
	return PTR_ERR(inx->avdd);

	inx->avee = devm_regulator_get(dev, "avee");
	if (IS_ERR(inx->avee))
	return PTR_ERR(inx->avee);

	inx->pp1800 = devm_regulator_get(dev, "pp1800");
	if (IS_ERR(inx->pp1800))
	return PTR_ERR(inx->pp1800);

	inx->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
	if (IS_ERR(inx->enable_gpio)) {
	dev_err(dev, "cannot get reset-gpios %ld\n",
	PTR_ERR(inx->enable_gpio));
	return PTR_ERR(inx->enable_gpio);
	}

	gpiod_set_value(inx->enable_gpio, 0);

	drm_panel_init(&inx->base, dev, &inx_panel_funcs,
	DRM_MODE_CONNECTOR_DSI);
	err = of_drm_get_panel_orientation(dev->of_node, &inx->orientation);
	if (err < 0) {
	dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
	return err;
	}

	err = drm_panel_of_backlight(&inx->base);
	if (err)
	return err;

	inx->base.funcs = &inx_panel_funcs;
	inx->base.dev = &inx->dsi->dev;

	drm_panel_add(&inx->base);

	return 0;
	}

	static int inx_panel_probe(struct mipi_dsi_device *dsi)
	{
	struct inx_panel *inx;
	int ret;
	const struct panel_desc *desc;

	inx = devm_kzalloc(&dsi->dev, sizeof(*inx), GFP_KERNEL);
	if (!inx)
	return -ENOMEM;

	desc = of_device_get_match_data(&dsi->dev);
	dsi->lanes = desc->lanes;
	dsi->format = desc->format;
	dsi->mode_flags = desc->mode_flags;
	inx->desc = desc;
	inx->dsi = dsi;
	ret = inx_panel_add(inx);
	if (ret < 0)
	return ret;

	mipi_dsi_set_drvdata(dsi, inx);

	ret = mipi_dsi_attach(dsi);
	if (ret)
	drm_panel_remove(&inx->base);

	return ret;
	}

	static void inx_panel_shutdown(struct mipi_dsi_device *dsi)
	{
	struct inx_panel *inx = mipi_dsi_get_drvdata(dsi);

	drm_panel_disable(&inx->base);
	drm_panel_unprepare(&inx->base);
	}

	static int inx_panel_remove(struct mipi_dsi_device *dsi)
	{
	struct inx_panel *inx = mipi_dsi_get_drvdata(dsi);
	int ret;

	inx_panel_shutdown(dsi);

	ret = mipi_dsi_detach(dsi);
	if (ret < 0)
	dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);

	if (inx->base.dev)
	drm_panel_remove(&inx->base);

	return 0;
	}

	static const struct of_device_id inx_of_match[] = {
	{ .compatible = "starry,2081101qfh032011-53g",
	.data = &starry_qfh032011_53g_desc
	},
	{ /* sentinel */ }
	};
	MODULE_DEVICE_TABLE(of, inx_of_match);

	static struct mipi_dsi_driver inx_panel_driver = {
	.driver = {
	.name = "panel-innolux-himax8279d",
	.of_match_table = inx_of_match,
	},
	.probe = inx_panel_probe,
	.remove = inx_panel_remove,
	.shutdown = inx_panel_shutdown,
	};
	module_mipi_dsi_driver(inx_panel_driver);

	MODULE_AUTHOR("Zhengqiao Xia <xiazhengqiao@huaqin.corp-partner.google.com>");
	MODULE_DESCRIPTION("INNOLUX HIMAX8279D 1200x1920 video mode panel driver");
	MODULE_LICENSE("GPL v2");