drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c - linux/torvalds/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2014 NVIDIA Corporation
  */

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

 #include <video/mipi_display.h>

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

 struct sharp_panel {
 	struct drm_panel base;
 	/* the datasheet refers to them as DSI-LINK1 and DSI-LINK2 */
 	struct mipi_dsi_device *link1;
 	struct mipi_dsi_device *link2;

 	struct regulator *supply;

 	bool prepared;
 	bool enabled;

 	const struct drm_display_mode *mode;
 };

 static inline struct sharp_panel *to_sharp_panel(struct drm_panel *panel)
 {
 	return container_of(panel, struct sharp_panel, base);
 }

 static void sharp_wait_frames(struct sharp_panel *sharp, unsigned int frames)
 {
 	unsigned int refresh = drm_mode_vrefresh(sharp->mode);

 	if (WARN_ON(frames > refresh))
 		return;

 	msleep(1000 / (refresh / frames));
 }

 static int sharp_panel_write(struct sharp_panel *sharp, u16 offset, u8 value)
 {
 	u8 payload[3] = { offset >> 8, offset & 0xff, value };
 	struct mipi_dsi_device *dsi = sharp->link1;
 	ssize_t err;

 	err = mipi_dsi_generic_write(dsi, payload, sizeof(payload));
 	if (err < 0) {
 		dev_err(&dsi->dev, "failed to write %02x to %04x: %zd\n",
 			value, offset, err);
 		return err;
 	}

 	err = mipi_dsi_dcs_nop(dsi);
 	if (err < 0) {
 		dev_err(&dsi->dev, "failed to send DCS nop: %zd\n", err);
 		return err;
 	}

 	usleep_range(10, 20);

 	return 0;
 }

 static __maybe_unused int sharp_panel_read(struct sharp_panel *sharp,
 					   u16 offset, u8 *value)
 {
 	ssize_t err;

 	cpu_to_be16s(&offset);

 	err = mipi_dsi_generic_read(sharp->link1, &offset, sizeof(offset),
 				    value, sizeof(*value));
 	if (err < 0)
 		dev_err(&sharp->link1->dev, "failed to read from %04x: %zd\n",
 			offset, err);

 	return err;
 }

 static int sharp_panel_disable(struct drm_panel *panel)
 {
 	struct sharp_panel *sharp = to_sharp_panel(panel);

 	if (!sharp->enabled)
 		return 0;

 	sharp->enabled = false;

 	return 0;
 }

 static int sharp_panel_unprepare(struct drm_panel *panel)
 {
 	struct sharp_panel *sharp = to_sharp_panel(panel);
 	int err;

 	if (!sharp->prepared)
 		return 0;

 	sharp_wait_frames(sharp, 4);

 	err = mipi_dsi_dcs_set_display_off(sharp->link1);
 	if (err < 0)
 		dev_err(panel->dev, "failed to set display off: %d\n", err);

 	err = mipi_dsi_dcs_enter_sleep_mode(sharp->link1);
 	if (err < 0)
 		dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);

 	msleep(120);

 	regulator_disable(sharp->supply);

 	sharp->prepared = false;

 	return 0;
 }

 static int sharp_setup_symmetrical_split(struct mipi_dsi_device *left,
 					 struct mipi_dsi_device *right,
 					 const struct drm_display_mode *mode)
 {
 	int err;

 	err = mipi_dsi_dcs_set_column_address(left, 0, mode->hdisplay / 2 - 1);
 	if (err < 0) {
 		dev_err(&left->dev, "failed to set column address: %d\n", err);
 		return err;
 	}

 	err = mipi_dsi_dcs_set_page_address(left, 0, mode->vdisplay - 1);
 	if (err < 0) {
 		dev_err(&left->dev, "failed to set page address: %d\n", err);
 		return err;
 	}

 	err = mipi_dsi_dcs_set_column_address(right, mode->hdisplay / 2,
 					      mode->hdisplay - 1);
 	if (err < 0) {
 		dev_err(&right->dev, "failed to set column address: %d\n", err);
 		return err;
 	}

 	err = mipi_dsi_dcs_set_page_address(right, 0, mode->vdisplay - 1);
 	if (err < 0) {
 		dev_err(&right->dev, "failed to set page address: %d\n", err);
 		return err;
 	}

 	return 0;
 }

 static int sharp_panel_prepare(struct drm_panel *panel)
 {
 	struct sharp_panel *sharp = to_sharp_panel(panel);
 	u8 format = MIPI_DCS_PIXEL_FMT_24BIT;
 	int err;

 	if (sharp->prepared)
 		return 0;

 	err = regulator_enable(sharp->supply);
 	if (err < 0)
 		return err;

 	/*
 	 * According to the datasheet, the panel needs around 10 ms to fully
 	 * power up. At least another 120 ms is required before exiting sleep
 	 * mode to make sure the panel is ready. Throw in another 20 ms for
 	 * good measure.
 	 */
 	msleep(150);

 	err = mipi_dsi_dcs_exit_sleep_mode(sharp->link1);
 	if (err < 0) {
 		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
 		goto poweroff;
 	}

 	/*
 	 * The MIPI DCS specification mandates this delay only between the
 	 * exit_sleep_mode and enter_sleep_mode commands, so it isn't strictly
 	 * necessary here.
 	 */
 	/*
 	msleep(120);
 	*/

 	/* set left-right mode */
 	err = sharp_panel_write(sharp, 0x1000, 0x2a);
 	if (err < 0) {
 		dev_err(panel->dev, "failed to set left-right mode: %d\n", err);
 		goto poweroff;
 	}

 	/* enable command mode */
 	err = sharp_panel_write(sharp, 0x1001, 0x01);
 	if (err < 0) {
 		dev_err(panel->dev, "failed to enable command mode: %d\n", err);
 		goto poweroff;
 	}

 	err = mipi_dsi_dcs_set_pixel_format(sharp->link1, format);
 	if (err < 0) {
 		dev_err(panel->dev, "failed to set pixel format: %d\n", err);
 		goto poweroff;
 	}

 	/*
 	 * TODO: The device supports both left-right and even-odd split
 	 * configurations, but this driver currently supports only the left-
 	 * right split. To support a different mode a mechanism needs to be
 	 * put in place to communicate the configuration back to the DSI host
 	 * controller.
 	 */
 	err = sharp_setup_symmetrical_split(sharp->link1, sharp->link2,
 					    sharp->mode);
 	if (err < 0) {
 		dev_err(panel->dev, "failed to set up symmetrical split: %d\n",
 			err);
 		goto poweroff;
 	}

 	err = mipi_dsi_dcs_set_display_on(sharp->link1);
 	if (err < 0) {
 		dev_err(panel->dev, "failed to set display on: %d\n", err);
 		goto poweroff;
 	}

 	sharp->prepared = true;

 	/* wait for 6 frames before continuing */
 	sharp_wait_frames(sharp, 6);

 	return 0;

 poweroff:
 	regulator_disable(sharp->supply);
 	return err;
 }

 static int sharp_panel_enable(struct drm_panel *panel)
 {
 	struct sharp_panel *sharp = to_sharp_panel(panel);

 	if (sharp->enabled)
 		return 0;

 	sharp->enabled = true;

 	return 0;
 }

 static const struct drm_display_mode default_mode = {
 	.clock = 278000,
 	.hdisplay = 2560,
 	.hsync_start = 2560 + 128,
 	.hsync_end = 2560 + 128 + 64,
 	.htotal = 2560 + 128 + 64 + 64,
 	.vdisplay = 1600,
 	.vsync_start = 1600 + 4,
 	.vsync_end = 1600 + 4 + 8,
 	.vtotal = 1600 + 4 + 8 + 32,
 };

 static int sharp_panel_get_modes(struct drm_panel *panel,
 				 struct drm_connector *connector)
 {
 	struct drm_display_mode *mode;

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

 	drm_mode_set_name(mode);

 	drm_mode_probed_add(connector, mode);

 	connector->display_info.width_mm = 217;
 	connector->display_info.height_mm = 136;

 	return 1;
 }

 static const struct drm_panel_funcs sharp_panel_funcs = {
 	.disable = sharp_panel_disable,
 	.unprepare = sharp_panel_unprepare,
 	.prepare = sharp_panel_prepare,
 	.enable = sharp_panel_enable,
 	.get_modes = sharp_panel_get_modes,
 };

 static const struct of_device_id sharp_of_match[] = {
 	{ .compatible = "sharp,lq101r1sx01", },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, sharp_of_match);

 static int sharp_panel_add(struct sharp_panel *sharp)
 {
 	int ret;

 	sharp->mode = &default_mode;

 	sharp->supply = devm_regulator_get(&sharp->link1->dev, "power");
 	if (IS_ERR(sharp->supply))
 		return PTR_ERR(sharp->supply);

 	drm_panel_init(&sharp->base, &sharp->link1->dev, &sharp_panel_funcs,
 		       DRM_MODE_CONNECTOR_DSI);

 	ret = drm_panel_of_backlight(&sharp->base);
 	if (ret)
 		return ret;

 	return drm_panel_add(&sharp->base);
 }

 static void sharp_panel_del(struct sharp_panel *sharp)
 {
 	if (sharp->base.dev)
 		drm_panel_remove(&sharp->base);

 	if (sharp->link2)
 		put_device(&sharp->link2->dev);
 }

 static int sharp_panel_probe(struct mipi_dsi_device *dsi)
 {
 	struct mipi_dsi_device *secondary = NULL;
 	struct sharp_panel *sharp;
 	struct device_node *np;
 	int err;

 	dsi->lanes = 4;
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = MIPI_DSI_MODE_LPM;

 	/* Find DSI-LINK1 */
 	np = of_parse_phandle(dsi->dev.of_node, "link2", 0);
 	if (np) {
 		secondary = of_find_mipi_dsi_device_by_node(np);
 		of_node_put(np);

 		if (!secondary)
 			return -EPROBE_DEFER;
 	}

 	/* register a panel for only the DSI-LINK1 interface */
 	if (secondary) {
 		sharp = devm_kzalloc(&dsi->dev, sizeof(*sharp), GFP_KERNEL);
 		if (!sharp) {
 			put_device(&secondary->dev);
 			return -ENOMEM;
 		}

 		mipi_dsi_set_drvdata(dsi, sharp);

 		sharp->link2 = secondary;
 		sharp->link1 = dsi;

 		err = sharp_panel_add(sharp);
 		if (err < 0) {
 			put_device(&secondary->dev);
 			return err;
 		}
 	}

 	err = mipi_dsi_attach(dsi);
 	if (err < 0) {
 		if (secondary)
 			sharp_panel_del(sharp);

 		return err;
 	}

 	return 0;
 }

 static int sharp_panel_remove(struct mipi_dsi_device *dsi)
 {
 	struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);
 	int err;

 	/* only detach from host for the DSI-LINK2 interface */
 	if (!sharp) {
 		mipi_dsi_detach(dsi);
 		return 0;
 	}

 	err = drm_panel_disable(&sharp->base);
 	if (err < 0)
 		dev_err(&dsi->dev, "failed to disable panel: %d\n", err);

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

 	sharp_panel_del(sharp);

 	return 0;
 }

 static void sharp_panel_shutdown(struct mipi_dsi_device *dsi)
 {
 	struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);

 	/* nothing to do for DSI-LINK2 */
 	if (!sharp)
 		return;

 	drm_panel_disable(&sharp->base);
 }

 static struct mipi_dsi_driver sharp_panel_driver = {
 	.driver = {
 		.name = "panel-sharp-lq101r1sx01",
 		.of_match_table = sharp_of_match,
 	},
 	.probe = sharp_panel_probe,
 	.remove = sharp_panel_remove,
 	.shutdown = sharp_panel_shutdown,
 };
 module_mipi_dsi_driver(sharp_panel_driver);

 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
 MODULE_DESCRIPTION("Sharp LQ101R1SX01 panel driver");
 MODULE_LICENSE("GPL v2");
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* Copyright (C) 2014 NVIDIA Corporation
	*/

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

	#include <video/mipi_display.h>

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

	struct sharp_panel {
	struct drm_panel base;
	/* the datasheet refers to them as DSI-LINK1 and DSI-LINK2 */
	struct mipi_dsi_device *link1;
	struct mipi_dsi_device *link2;

	struct regulator *supply;

	bool prepared;
	bool enabled;

	const struct drm_display_mode *mode;
	};

	static inline struct sharp_panel to_sharp_panel(struct drm_panel panel)
	{
	return container_of(panel, struct sharp_panel, base);
	}

	static void sharp_wait_frames(struct sharp_panel *sharp, unsigned int frames)
	{
	unsigned int refresh = drm_mode_vrefresh(sharp->mode);

	if (WARN_ON(frames > refresh))
	return;

	msleep(1000 / (refresh / frames));
	}

	static int sharp_panel_write(struct sharp_panel *sharp, u16 offset, u8 value)
	{
	u8 payload[3] = { offset >> 8, offset & 0xff, value };
	struct mipi_dsi_device *dsi = sharp->link1;
	ssize_t err;

	err = mipi_dsi_generic_write(dsi, payload, sizeof(payload));
	if (err < 0) {
	dev_err(&dsi->dev, "failed to write %02x to %04x: %zd\n",
	value, offset, err);
	return err;
	}

	err = mipi_dsi_dcs_nop(dsi);
	if (err < 0) {
	dev_err(&dsi->dev, "failed to send DCS nop: %zd\n", err);
	return err;
	}

	usleep_range(10, 20);

	return 0;
	}

	static __maybe_unused int sharp_panel_read(struct sharp_panel *sharp,
	u16 offset, u8 *value)
	{
	ssize_t err;

	cpu_to_be16s(&offset);

	err = mipi_dsi_generic_read(sharp->link1, &offset, sizeof(offset),
	value, sizeof(*value));
	if (err < 0)
	dev_err(&sharp->link1->dev, "failed to read from %04x: %zd\n",
	offset, err);

	return err;
	}

	static int sharp_panel_disable(struct drm_panel *panel)
	{
	struct sharp_panel *sharp = to_sharp_panel(panel);

	if (!sharp->enabled)
	return 0;

	sharp->enabled = false;

	return 0;
	}

	static int sharp_panel_unprepare(struct drm_panel *panel)
	{
	struct sharp_panel *sharp = to_sharp_panel(panel);
	int err;

	if (!sharp->prepared)
	return 0;

	sharp_wait_frames(sharp, 4);

	err = mipi_dsi_dcs_set_display_off(sharp->link1);
	if (err < 0)
	dev_err(panel->dev, "failed to set display off: %d\n", err);

	err = mipi_dsi_dcs_enter_sleep_mode(sharp->link1);
	if (err < 0)
	dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);

	msleep(120);

	regulator_disable(sharp->supply);

	sharp->prepared = false;

	return 0;
	}

	static int sharp_setup_symmetrical_split(struct mipi_dsi_device *left,
	struct mipi_dsi_device *right,
	const struct drm_display_mode *mode)
	{
	int err;

	err = mipi_dsi_dcs_set_column_address(left, 0, mode->hdisplay / 2 - 1);
	if (err < 0) {
	dev_err(&left->dev, "failed to set column address: %d\n", err);
	return err;
	}

	err = mipi_dsi_dcs_set_page_address(left, 0, mode->vdisplay - 1);
	if (err < 0) {
	dev_err(&left->dev, "failed to set page address: %d\n", err);
	return err;
	}

	err = mipi_dsi_dcs_set_column_address(right, mode->hdisplay / 2,
	mode->hdisplay - 1);
	if (err < 0) {
	dev_err(&right->dev, "failed to set column address: %d\n", err);
	return err;
	}

	err = mipi_dsi_dcs_set_page_address(right, 0, mode->vdisplay - 1);
	if (err < 0) {
	dev_err(&right->dev, "failed to set page address: %d\n", err);
	return err;
	}

	return 0;
	}

	static int sharp_panel_prepare(struct drm_panel *panel)
	{
	struct sharp_panel *sharp = to_sharp_panel(panel);
	u8 format = MIPI_DCS_PIXEL_FMT_24BIT;
	int err;

	if (sharp->prepared)
	return 0;

	err = regulator_enable(sharp->supply);
	if (err < 0)
	return err;

	/*
	* According to the datasheet, the panel needs around 10 ms to fully
	* power up. At least another 120 ms is required before exiting sleep
	* mode to make sure the panel is ready. Throw in another 20 ms for
	* good measure.
	*/
	msleep(150);

	err = mipi_dsi_dcs_exit_sleep_mode(sharp->link1);
	if (err < 0) {
	dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
	goto poweroff;
	}

	/*
	* The MIPI DCS specification mandates this delay only between the
	* exit_sleep_mode and enter_sleep_mode commands, so it isn't strictly
	* necessary here.
	*/
	/*
	msleep(120);
	*/

	/* set left-right mode */
	err = sharp_panel_write(sharp, 0x1000, 0x2a);
	if (err < 0) {
	dev_err(panel->dev, "failed to set left-right mode: %d\n", err);
	goto poweroff;
	}

	/* enable command mode */
	err = sharp_panel_write(sharp, 0x1001, 0x01);
	if (err < 0) {
	dev_err(panel->dev, "failed to enable command mode: %d\n", err);
	goto poweroff;
	}

	err = mipi_dsi_dcs_set_pixel_format(sharp->link1, format);
	if (err < 0) {
	dev_err(panel->dev, "failed to set pixel format: %d\n", err);
	goto poweroff;
	}

	/*
	* TODO: The device supports both left-right and even-odd split
	* configurations, but this driver currently supports only the left-
	* right split. To support a different mode a mechanism needs to be
	* put in place to communicate the configuration back to the DSI host
	* controller.
	*/
	err = sharp_setup_symmetrical_split(sharp->link1, sharp->link2,
	sharp->mode);
	if (err < 0) {
	dev_err(panel->dev, "failed to set up symmetrical split: %d\n",
	err);
	goto poweroff;
	}

	err = mipi_dsi_dcs_set_display_on(sharp->link1);
	if (err < 0) {
	dev_err(panel->dev, "failed to set display on: %d\n", err);
	goto poweroff;
	}

	sharp->prepared = true;

	/* wait for 6 frames before continuing */
	sharp_wait_frames(sharp, 6);

	return 0;

	poweroff:
	regulator_disable(sharp->supply);
	return err;
	}

	static int sharp_panel_enable(struct drm_panel *panel)
	{
	struct sharp_panel *sharp = to_sharp_panel(panel);

	if (sharp->enabled)
	return 0;

	sharp->enabled = true;

	return 0;
	}

	static const struct drm_display_mode default_mode = {
	.clock = 278000,
	.hdisplay = 2560,
	.hsync_start = 2560 + 128,
	.hsync_end = 2560 + 128 + 64,
	.htotal = 2560 + 128 + 64 + 64,
	.vdisplay = 1600,
	.vsync_start = 1600 + 4,
	.vsync_end = 1600 + 4 + 8,
	.vtotal = 1600 + 4 + 8 + 32,
	};

	static int sharp_panel_get_modes(struct drm_panel *panel,
	struct drm_connector *connector)
	{
	struct drm_display_mode *mode;

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

	drm_mode_set_name(mode);

	drm_mode_probed_add(connector, mode);

	connector->display_info.width_mm = 217;
	connector->display_info.height_mm = 136;

	return 1;
	}

	static const struct drm_panel_funcs sharp_panel_funcs = {
	.disable = sharp_panel_disable,
	.unprepare = sharp_panel_unprepare,
	.prepare = sharp_panel_prepare,
	.enable = sharp_panel_enable,
	.get_modes = sharp_panel_get_modes,
	};

	static const struct of_device_id sharp_of_match[] = {
	{ .compatible = "sharp,lq101r1sx01", },
	{ }
	};
	MODULE_DEVICE_TABLE(of, sharp_of_match);

	static int sharp_panel_add(struct sharp_panel *sharp)
	{
	int ret;

	sharp->mode = &default_mode;

	sharp->supply = devm_regulator_get(&sharp->link1->dev, "power");
	if (IS_ERR(sharp->supply))
	return PTR_ERR(sharp->supply);

	drm_panel_init(&sharp->base, &sharp->link1->dev, &sharp_panel_funcs,
	DRM_MODE_CONNECTOR_DSI);

	ret = drm_panel_of_backlight(&sharp->base);
	if (ret)
	return ret;

	return drm_panel_add(&sharp->base);
	}

	static void sharp_panel_del(struct sharp_panel *sharp)
	{
	if (sharp->base.dev)
	drm_panel_remove(&sharp->base);

	if (sharp->link2)
	put_device(&sharp->link2->dev);
	}

	static int sharp_panel_probe(struct mipi_dsi_device *dsi)
	{
	struct mipi_dsi_device *secondary = NULL;
	struct sharp_panel *sharp;
	struct device_node *np;
	int err;

	dsi->lanes = 4;
	dsi->format = MIPI_DSI_FMT_RGB888;
	dsi->mode_flags = MIPI_DSI_MODE_LPM;

	/* Find DSI-LINK1 */
	np = of_parse_phandle(dsi->dev.of_node, "link2", 0);
	if (np) {
	secondary = of_find_mipi_dsi_device_by_node(np);
	of_node_put(np);

	if (!secondary)
	return -EPROBE_DEFER;
	}

	/* register a panel for only the DSI-LINK1 interface */
	if (secondary) {
	sharp = devm_kzalloc(&dsi->dev, sizeof(*sharp), GFP_KERNEL);
	if (!sharp) {
	put_device(&secondary->dev);
	return -ENOMEM;
	}

	mipi_dsi_set_drvdata(dsi, sharp);

	sharp->link2 = secondary;
	sharp->link1 = dsi;

	err = sharp_panel_add(sharp);
	if (err < 0) {
	put_device(&secondary->dev);
	return err;
	}
	}

	err = mipi_dsi_attach(dsi);
	if (err < 0) {
	if (secondary)
	sharp_panel_del(sharp);

	return err;
	}

	return 0;
	}

	static int sharp_panel_remove(struct mipi_dsi_device *dsi)
	{
	struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);
	int err;

	/* only detach from host for the DSI-LINK2 interface */
	if (!sharp) {
	mipi_dsi_detach(dsi);
	return 0;
	}

	err = drm_panel_disable(&sharp->base);
	if (err < 0)
	dev_err(&dsi->dev, "failed to disable panel: %d\n", err);

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

	sharp_panel_del(sharp);

	return 0;
	}

	static void sharp_panel_shutdown(struct mipi_dsi_device *dsi)
	{
	struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);

	/* nothing to do for DSI-LINK2 */
	if (!sharp)
	return;

	drm_panel_disable(&sharp->base);
	}

	static struct mipi_dsi_driver sharp_panel_driver = {
	.driver = {
	.name = "panel-sharp-lq101r1sx01",
	.of_match_table = sharp_of_match,
	},
	.probe = sharp_panel_probe,
	.remove = sharp_panel_remove,
	.shutdown = sharp_panel_shutdown,
	};
	module_mipi_dsi_driver(sharp_panel_driver);

	MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
	MODULE_DESCRIPTION("Sharp LQ101R1SX01 panel driver");
	MODULE_LICENSE("GPL v2");