drivers/gpu/drm/panel/panel-renesas-r61307.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0

 #include <linux/array_size.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/gpio/consumer.h>
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/property.h>
 #include <linux/regulator/consumer.h>

 #include <video/mipi_display.h>

 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>

 #define R61307_MACP		0xb0 /* Manufacturer CMD Protect */
 #define   R61307_MACP_ON	0x03
 #define   R61307_MACP_OFF	0x04

 #define R61307_INVERSION	0xc1
 #define R61307_GAMMA_SET_A	0xc8 /* Gamma Setting A */
 #define R61307_GAMMA_SET_B	0xc9 /* Gamma Setting B */
 #define R61307_GAMMA_SET_C	0xca /* Gamma Setting C */
 #define R61307_CONTRAST_SET	0xcc

 struct renesas_r61307 {
 	struct drm_panel panel;
 	struct mipi_dsi_device *dsi;

 	struct regulator *vcc_supply;
 	struct regulator *iovcc_supply;

 	struct gpio_desc *reset_gpio;

 	bool prepared;

 	bool dig_cont_adj;
 	bool inversion;
 	u32 gamma;
 };

 static const u8 gamma_setting[][25] = {
 	{ /* sentinel */ },
 	{
 		R61307_GAMMA_SET_A,
 		0x00, 0x06, 0x0a, 0x0f,
 		0x14, 0x1f, 0x1f, 0x17,
 		0x12, 0x0c, 0x09, 0x06,
 		0x00, 0x06, 0x0a, 0x0f,
 		0x14, 0x1f, 0x1f, 0x17,
 		0x12, 0x0c, 0x09, 0x06
 	},
 	{
 		R61307_GAMMA_SET_A,
 		0x00, 0x05, 0x0b, 0x0f,
 		0x11, 0x1d, 0x20, 0x18,
 		0x18, 0x09, 0x07, 0x06,
 		0x00, 0x05, 0x0b, 0x0f,
 		0x11, 0x1d, 0x20, 0x18,
 		0x18, 0x09, 0x07, 0x06
 	},
 	{
 		R61307_GAMMA_SET_A,
 		0x0b, 0x0d, 0x10, 0x14,
 		0x13, 0x1d, 0x20, 0x18,
 		0x12, 0x09, 0x07, 0x06,
 		0x0a, 0x0c, 0x10, 0x14,
 		0x13, 0x1d, 0x20, 0x18,
 		0x12, 0x09, 0x07, 0x06
 	},
 };

 static inline struct renesas_r61307 *to_renesas_r61307(struct drm_panel *panel)
 {
 	return container_of(panel, struct renesas_r61307, panel);
 }

 static void renesas_r61307_reset(struct renesas_r61307 *priv)
 {
 	gpiod_set_value_cansleep(priv->reset_gpio, 1);
 	usleep_range(10000, 11000);
 	gpiod_set_value_cansleep(priv->reset_gpio, 0);
 	usleep_range(2000, 3000);
 }

 static int renesas_r61307_prepare(struct drm_panel *panel)
 {
 	struct renesas_r61307 *priv = to_renesas_r61307(panel);
 	struct device *dev = &priv->dsi->dev;
 	int ret;

 	if (priv->prepared)
 		return 0;

 	ret = regulator_enable(priv->vcc_supply);
 	if (ret) {
 		dev_err(dev, "failed to enable vcc power supply\n");
 		return ret;
 	}

 	usleep_range(2000, 3000);

 	ret = regulator_enable(priv->iovcc_supply);
 	if (ret) {
 		dev_err(dev, "failed to enable iovcc power supply\n");
 		return ret;
 	}

 	usleep_range(2000, 3000);

 	renesas_r61307_reset(priv);

 	priv->prepared = true;
 	return 0;
 }

 static int renesas_r61307_enable(struct drm_panel *panel)
 {
 	struct renesas_r61307 *priv = to_renesas_r61307(panel);
 	struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi };

 	mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
 	mipi_dsi_msleep(&ctx, 80);

 	mipi_dsi_dcs_write_seq_multi(&ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
 	mipi_dsi_msleep(&ctx, 20);

 	mipi_dsi_dcs_set_pixel_format_multi(&ctx, MIPI_DCS_PIXEL_FMT_24BIT << 4);

 	/* MACP Off */
 	mipi_dsi_generic_write_seq_multi(&ctx, R61307_MACP, R61307_MACP_OFF);

 	if (priv->dig_cont_adj)
 		mipi_dsi_generic_write_seq_multi(&ctx, R61307_CONTRAST_SET,
 						 0xdc, 0xb4, 0xff);

 	if (priv->gamma)
 		mipi_dsi_generic_write_multi(&ctx, gamma_setting[priv->gamma],
 					     sizeof(gamma_setting[priv->gamma]));

 	if (priv->inversion)
 		mipi_dsi_generic_write_seq_multi(&ctx, R61307_INVERSION,
 						 0x00, 0x50, 0x03, 0x22,
 						 0x16, 0x06, 0x60, 0x11);
 	else
 		mipi_dsi_generic_write_seq_multi(&ctx, R61307_INVERSION,
 						 0x00, 0x10, 0x03, 0x22,
 						 0x16, 0x06, 0x60, 0x01);

 	/* MACP On */
 	mipi_dsi_generic_write_seq_multi(&ctx, R61307_MACP, R61307_MACP_ON);

 	mipi_dsi_dcs_set_display_on_multi(&ctx);
 	mipi_dsi_msleep(&ctx, 50);

 	return 0;
 }

 static int renesas_r61307_disable(struct drm_panel *panel)
 {
 	struct renesas_r61307 *priv = to_renesas_r61307(panel);
 	struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi };

 	mipi_dsi_dcs_set_display_off_multi(&ctx);
 	mipi_dsi_msleep(&ctx, 100);
 	mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);

 	return 0;
 }

 static int renesas_r61307_unprepare(struct drm_panel *panel)
 {
 	struct renesas_r61307 *priv = to_renesas_r61307(panel);

 	if (!priv->prepared)
 		return 0;

 	usleep_range(10000, 11000);

 	gpiod_set_value_cansleep(priv->reset_gpio, 1);
 	usleep_range(5000, 6000);

 	regulator_disable(priv->iovcc_supply);
 	usleep_range(2000, 3000);
 	regulator_disable(priv->vcc_supply);

 	priv->prepared = false;
 	return 0;
 }

 static const struct drm_display_mode renesas_r61307_mode = {
 	.clock = (768 + 116 + 81 + 5) * (1024 + 24 + 8 + 2) * 60 / 1000,
 	.hdisplay = 768,
 	.hsync_start = 768 + 116,
 	.hsync_end = 768 + 116 + 81,
 	.htotal = 768 + 116 + 81 + 5,
 	.vdisplay = 1024,
 	.vsync_start = 1024 + 24,
 	.vsync_end = 1024 + 24 + 8,
 	.vtotal = 1024 + 24 + 8 + 2,
 	.width_mm = 76,
 	.height_mm = 101,
 };

 static int renesas_r61307_get_modes(struct drm_panel *panel,
 				    struct drm_connector *connector)
 {
 	struct drm_display_mode *mode;

 	mode = drm_mode_duplicate(connector->dev, &renesas_r61307_mode);
 	if (!mode)
 		return -ENOMEM;

 	drm_mode_set_name(mode);

 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
 	connector->display_info.width_mm = mode->width_mm;
 	connector->display_info.height_mm = mode->height_mm;
 	drm_mode_probed_add(connector, mode);

 	return 1;
 }

 static const struct drm_panel_funcs renesas_r61307_panel_funcs = {
 	.prepare = renesas_r61307_prepare,
 	.enable = renesas_r61307_enable,
 	.disable = renesas_r61307_disable,
 	.unprepare = renesas_r61307_unprepare,
 	.get_modes = renesas_r61307_get_modes,
 };

 static int renesas_r61307_probe(struct mipi_dsi_device *dsi)
 {
 	struct device *dev = &dsi->dev;
 	struct renesas_r61307 *priv;
 	int ret;

 	priv = devm_drm_panel_alloc(dev, struct renesas_r61307, panel,
 				    &renesas_r61307_panel_funcs,
 				    DRM_MODE_CONNECTOR_DSI);
 	if (IS_ERR(priv))
 		return PTR_ERR(priv);

 	priv->vcc_supply = devm_regulator_get(dev, "vcc");
 	if (IS_ERR(priv->vcc_supply))
 		return dev_err_probe(dev, PTR_ERR(priv->vcc_supply),
 				     "Failed to get vcc-supply\n");

 	priv->iovcc_supply = devm_regulator_get(dev, "iovcc");
 	if (IS_ERR(priv->iovcc_supply))
 		return dev_err_probe(dev, PTR_ERR(priv->iovcc_supply),
 				     "Failed to get iovcc-supply\n");

 	priv->reset_gpio = devm_gpiod_get_optional(dev, "reset",
 						   GPIOD_OUT_HIGH);
 	if (IS_ERR(priv->reset_gpio))
 		return dev_err_probe(dev, PTR_ERR(priv->reset_gpio),
 				     "Failed to get reset gpios\n");

 	if (device_property_read_bool(dev, "renesas,inversion"))
 		priv->inversion = true;

 	if (device_property_read_bool(dev, "renesas,contrast"))
 		priv->dig_cont_adj = true;

 	priv->gamma = 0;
 	device_property_read_u32(dev, "renesas,gamma", &priv->gamma);

 	priv->dsi = dsi;
 	mipi_dsi_set_drvdata(dsi, priv);

 	dsi->lanes = 4;
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 			  MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;

 	ret = drm_panel_of_backlight(&priv->panel);
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to get backlight\n");

 	drm_panel_add(&priv->panel);

 	ret = mipi_dsi_attach(dsi);
 	if (ret) {
 		drm_panel_remove(&priv->panel);
 		return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
 	}

 	return 0;
 }

 static void renesas_r61307_remove(struct mipi_dsi_device *dsi)
 {
 	struct renesas_r61307 *priv = mipi_dsi_get_drvdata(dsi);
 	int ret;

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

 	drm_panel_remove(&priv->panel);
 }

 static const struct of_device_id renesas_r61307_of_match[] = {
 	{ .compatible = "hit,tx13d100vm0eaa" },
 	{ .compatible = "koe,tx13d100vm0eaa" },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, renesas_r61307_of_match);

 static struct mipi_dsi_driver renesas_r61307_driver = {
 	.probe = renesas_r61307_probe,
 	.remove = renesas_r61307_remove,
 	.driver = {
 		.name = "panel-renesas-r61307",
 		.of_match_table = renesas_r61307_of_match,
 	},
 };
 module_mipi_dsi_driver(renesas_r61307_driver);

 MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
 MODULE_DESCRIPTION("Renesas R61307-based panel driver");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0

	#include <linux/array_size.h>
	#include <linux/delay.h>
	#include <linux/err.h>
	#include <linux/gpio/consumer.h>
	#include <linux/mod_devicetable.h>
	#include <linux/module.h>
	#include <linux/property.h>
	#include <linux/regulator/consumer.h>

	#include <video/mipi_display.h>

	#include <drm/drm_mipi_dsi.h>
	#include <drm/drm_modes.h>
	#include <drm/drm_panel.h>

	#define R61307_MACP 0xb0 /* Manufacturer CMD Protect */
	#define R61307_MACP_ON 0x03
	#define R61307_MACP_OFF 0x04

	#define R61307_INVERSION 0xc1
	#define R61307_GAMMA_SET_A 0xc8 /* Gamma Setting A */
	#define R61307_GAMMA_SET_B 0xc9 /* Gamma Setting B */
	#define R61307_GAMMA_SET_C 0xca /* Gamma Setting C */
	#define R61307_CONTRAST_SET 0xcc

	struct renesas_r61307 {
	struct drm_panel panel;
	struct mipi_dsi_device *dsi;

	struct regulator *vcc_supply;
	struct regulator *iovcc_supply;

	struct gpio_desc *reset_gpio;

	bool prepared;

	bool dig_cont_adj;
	bool inversion;
	u32 gamma;
	};

	static const u8 gamma_setting[][25] = {
	{ /* sentinel */ },
	{
	R61307_GAMMA_SET_A,
	0x00, 0x06, 0x0a, 0x0f,
	0x14, 0x1f, 0x1f, 0x17,
	0x12, 0x0c, 0x09, 0x06,
	0x00, 0x06, 0x0a, 0x0f,
	0x14, 0x1f, 0x1f, 0x17,
	0x12, 0x0c, 0x09, 0x06
	},
	{
	R61307_GAMMA_SET_A,
	0x00, 0x05, 0x0b, 0x0f,
	0x11, 0x1d, 0x20, 0x18,
	0x18, 0x09, 0x07, 0x06,
	0x00, 0x05, 0x0b, 0x0f,
	0x11, 0x1d, 0x20, 0x18,
	0x18, 0x09, 0x07, 0x06
	},
	{
	R61307_GAMMA_SET_A,
	0x0b, 0x0d, 0x10, 0x14,
	0x13, 0x1d, 0x20, 0x18,
	0x12, 0x09, 0x07, 0x06,
	0x0a, 0x0c, 0x10, 0x14,
	0x13, 0x1d, 0x20, 0x18,
	0x12, 0x09, 0x07, 0x06
	},
	};

	static inline struct renesas_r61307 to_renesas_r61307(struct drm_panel panel)
	{
	return container_of(panel, struct renesas_r61307, panel);
	}

	static void renesas_r61307_reset(struct renesas_r61307 *priv)
	{
	gpiod_set_value_cansleep(priv->reset_gpio, 1);
	usleep_range(10000, 11000);
	gpiod_set_value_cansleep(priv->reset_gpio, 0);
	usleep_range(2000, 3000);
	}

	static int renesas_r61307_prepare(struct drm_panel *panel)
	{
	struct renesas_r61307 *priv = to_renesas_r61307(panel);
	struct device *dev = &priv->dsi->dev;
	int ret;

	if (priv->prepared)
	return 0;

	ret = regulator_enable(priv->vcc_supply);
	if (ret) {
	dev_err(dev, "failed to enable vcc power supply\n");
	return ret;
	}

	usleep_range(2000, 3000);

	ret = regulator_enable(priv->iovcc_supply);
	if (ret) {
	dev_err(dev, "failed to enable iovcc power supply\n");
	return ret;
	}

	usleep_range(2000, 3000);

	renesas_r61307_reset(priv);

	priv->prepared = true;
	return 0;
	}

	static int renesas_r61307_enable(struct drm_panel *panel)
	{
	struct renesas_r61307 *priv = to_renesas_r61307(panel);
	struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi };

	mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
	mipi_dsi_msleep(&ctx, 80);

	mipi_dsi_dcs_write_seq_multi(&ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
	mipi_dsi_msleep(&ctx, 20);

	mipi_dsi_dcs_set_pixel_format_multi(&ctx, MIPI_DCS_PIXEL_FMT_24BIT << 4);

	/* MACP Off */
	mipi_dsi_generic_write_seq_multi(&ctx, R61307_MACP, R61307_MACP_OFF);

	if (priv->dig_cont_adj)
	mipi_dsi_generic_write_seq_multi(&ctx, R61307_CONTRAST_SET,
	0xdc, 0xb4, 0xff);

	if (priv->gamma)
	mipi_dsi_generic_write_multi(&ctx, gamma_setting[priv->gamma],
	sizeof(gamma_setting[priv->gamma]));

	if (priv->inversion)
	mipi_dsi_generic_write_seq_multi(&ctx, R61307_INVERSION,
	0x00, 0x50, 0x03, 0x22,
	0x16, 0x06, 0x60, 0x11);
	else
	mipi_dsi_generic_write_seq_multi(&ctx, R61307_INVERSION,
	0x00, 0x10, 0x03, 0x22,
	0x16, 0x06, 0x60, 0x01);

	/* MACP On */
	mipi_dsi_generic_write_seq_multi(&ctx, R61307_MACP, R61307_MACP_ON);

	mipi_dsi_dcs_set_display_on_multi(&ctx);
	mipi_dsi_msleep(&ctx, 50);

	return 0;
	}

	static int renesas_r61307_disable(struct drm_panel *panel)
	{
	struct renesas_r61307 *priv = to_renesas_r61307(panel);
	struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi };

	mipi_dsi_dcs_set_display_off_multi(&ctx);
	mipi_dsi_msleep(&ctx, 100);
	mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);

	return 0;
	}

	static int renesas_r61307_unprepare(struct drm_panel *panel)
	{
	struct renesas_r61307 *priv = to_renesas_r61307(panel);

	if (!priv->prepared)
	return 0;

	usleep_range(10000, 11000);

	gpiod_set_value_cansleep(priv->reset_gpio, 1);
	usleep_range(5000, 6000);

	regulator_disable(priv->iovcc_supply);
	usleep_range(2000, 3000);
	regulator_disable(priv->vcc_supply);

	priv->prepared = false;
	return 0;
	}

	static const struct drm_display_mode renesas_r61307_mode = {
	.clock = (768 + 116 + 81 + 5) * (1024 + 24 + 8 + 2) * 60 / 1000,
	.hdisplay = 768,
	.hsync_start = 768 + 116,
	.hsync_end = 768 + 116 + 81,
	.htotal = 768 + 116 + 81 + 5,
	.vdisplay = 1024,
	.vsync_start = 1024 + 24,
	.vsync_end = 1024 + 24 + 8,
	.vtotal = 1024 + 24 + 8 + 2,
	.width_mm = 76,
	.height_mm = 101,
	};

	static int renesas_r61307_get_modes(struct drm_panel *panel,
	struct drm_connector *connector)
	{
	struct drm_display_mode *mode;

	mode = drm_mode_duplicate(connector->dev, &renesas_r61307_mode);
	if (!mode)
	return -ENOMEM;

	drm_mode_set_name(mode);

	mode->type = DRM_MODE_TYPE_DRIVER \| DRM_MODE_TYPE_PREFERRED;
	connector->display_info.width_mm = mode->width_mm;
	connector->display_info.height_mm = mode->height_mm;
	drm_mode_probed_add(connector, mode);

	return 1;
	}

	static const struct drm_panel_funcs renesas_r61307_panel_funcs = {
	.prepare = renesas_r61307_prepare,
	.enable = renesas_r61307_enable,
	.disable = renesas_r61307_disable,
	.unprepare = renesas_r61307_unprepare,
	.get_modes = renesas_r61307_get_modes,
	};

	static int renesas_r61307_probe(struct mipi_dsi_device *dsi)
	{
	struct device *dev = &dsi->dev;
	struct renesas_r61307 *priv;
	int ret;

	priv = devm_drm_panel_alloc(dev, struct renesas_r61307, panel,
	&renesas_r61307_panel_funcs,
	DRM_MODE_CONNECTOR_DSI);
	if (IS_ERR(priv))
	return PTR_ERR(priv);

	priv->vcc_supply = devm_regulator_get(dev, "vcc");
	if (IS_ERR(priv->vcc_supply))
	return dev_err_probe(dev, PTR_ERR(priv->vcc_supply),
	"Failed to get vcc-supply\n");

	priv->iovcc_supply = devm_regulator_get(dev, "iovcc");
	if (IS_ERR(priv->iovcc_supply))
	return dev_err_probe(dev, PTR_ERR(priv->iovcc_supply),
	"Failed to get iovcc-supply\n");

	priv->reset_gpio = devm_gpiod_get_optional(dev, "reset",
	GPIOD_OUT_HIGH);
	if (IS_ERR(priv->reset_gpio))
	return dev_err_probe(dev, PTR_ERR(priv->reset_gpio),
	"Failed to get reset gpios\n");

	if (device_property_read_bool(dev, "renesas,inversion"))
	priv->inversion = true;

	if (device_property_read_bool(dev, "renesas,contrast"))
	priv->dig_cont_adj = true;

	priv->gamma = 0;
	device_property_read_u32(dev, "renesas,gamma", &priv->gamma);

	priv->dsi = dsi;
	mipi_dsi_set_drvdata(dsi, priv);

	dsi->lanes = 4;
	dsi->format = MIPI_DSI_FMT_RGB888;
	dsi->mode_flags = MIPI_DSI_MODE_VIDEO \| MIPI_DSI_MODE_VIDEO_SYNC_PULSE \|
	MIPI_DSI_CLOCK_NON_CONTINUOUS \| MIPI_DSI_MODE_LPM;

	ret = drm_panel_of_backlight(&priv->panel);
	if (ret)
	return dev_err_probe(dev, ret, "Failed to get backlight\n");

	drm_panel_add(&priv->panel);

	ret = mipi_dsi_attach(dsi);
	if (ret) {
	drm_panel_remove(&priv->panel);
	return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
	}

	return 0;
	}

	static void renesas_r61307_remove(struct mipi_dsi_device *dsi)
	{
	struct renesas_r61307 *priv = mipi_dsi_get_drvdata(dsi);
	int ret;

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

	drm_panel_remove(&priv->panel);
	}

	static const struct of_device_id renesas_r61307_of_match[] = {
	{ .compatible = "hit,tx13d100vm0eaa" },
	{ .compatible = "koe,tx13d100vm0eaa" },
	{ /* sentinel */ }
	};
	MODULE_DEVICE_TABLE(of, renesas_r61307_of_match);

	static struct mipi_dsi_driver renesas_r61307_driver = {
	.probe = renesas_r61307_probe,
	.remove = renesas_r61307_remove,
	.driver = {
	.name = "panel-renesas-r61307",
	.of_match_table = renesas_r61307_of_match,
	},
	};
	module_mipi_dsi_driver(renesas_r61307_driver);

	MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
	MODULE_DESCRIPTION("Renesas R61307-based panel driver");
	MODULE_LICENSE("GPL");