drivers/video/himax-hx8394.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2022 Ondrej Jirman <megi@xff.cz>
  */
 #include <backlight.h>
 #include <dm.h>
 #include <mipi_dsi.h>
 #include <panel.h>
 #include <asm/gpio.h>
 #include <dm/device_compat.h>
 #include <linux/delay.h>
 #include <power/regulator.h>

 struct hx8394_panel_priv {
 	struct udevice *reg_vcc;
 	struct udevice *reg_iovcc;
 	struct gpio_desc reset;
 	struct udevice *backlight;
 };

 static const struct display_timing default_timing = {
 	.pixelclock.typ		= 74250000,
 	.hactive.typ		= 720,
 	.hfront_porch.typ	= 40,
 	.hback_porch.typ	= 40,
 	.hsync_len.typ		= 46,
 	.vactive.typ		= 1440,
 	.vfront_porch.typ	= 7,
 	.vback_porch.typ	= 9,
 	.vsync_len.typ		= 7,
 	.flags			= DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
 };

 #define dsi_dcs_write_seq(device, seq...) do {					\
 		static const u8 d[] = { seq };					\
 		int ret;							\
 		ret = mipi_dsi_dcs_write_buffer(device, d, ARRAY_SIZE(d));	\
 		if (ret < 0)							\
 			return ret;						\
 	} while (0)

 static int hx8394_init_sequence(struct udevice *dev)
 {
 	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
 	struct mipi_dsi_device *device = plat->device;
 	int ret;

 	dsi_dcs_write_seq(device, 0xb9, 0xff, 0x83, 0x94);
 	dsi_dcs_write_seq(device, 0xb1, 0x48, 0x11, 0x71, 0x09, 0x32, 0x24,
 			  0x71, 0x31, 0x55, 0x30);
 	dsi_dcs_write_seq(device, 0xba, 0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0);
 	dsi_dcs_write_seq(device, 0xb2, 0x00, 0x80, 0x78, 0x0c, 0x07);
 	dsi_dcs_write_seq(device, 0xb4, 0x12, 0x63, 0x12, 0x63, 0x12, 0x63,
 			  0x01, 0x0c, 0x7c, 0x55, 0x00, 0x3f, 0x12, 0x6b, 0x12,
 			  0x6b, 0x12, 0x6b, 0x01, 0x0c, 0x7c);
 	dsi_dcs_write_seq(device, 0xd3, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x1c,
 			  0x00, 0x00, 0x32, 0x10, 0x09, 0x00, 0x09, 0x32, 0x15,
 			  0xad, 0x05, 0xad, 0x32, 0x00, 0x00, 0x00, 0x00, 0x37,
 			  0x03, 0x0b, 0x0b, 0x37, 0x00, 0x00, 0x00, 0x0c, 0x40);
 	dsi_dcs_write_seq(device, 0xd5, 0x19, 0x19, 0x18, 0x18, 0x1b, 0x1b,
 			  0x1a, 0x1a, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
 			  0x07, 0x20, 0x21, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
 			  0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x24, 0x25, 0x18,
 			  0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
 			  0x18, 0x18);
 	dsi_dcs_write_seq(device, 0xd6, 0x18, 0x18, 0x19, 0x19, 0x1b, 0x1b,
 			  0x1a, 0x1a, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
 			  0x00, 0x25, 0x24, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
 			  0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x21, 0x20, 0x18,
 			  0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
 			  0x18, 0x18);
 	dsi_dcs_write_seq(device, 0xe0, 0x00, 0x04, 0x0c, 0x12, 0x14, 0x18,
 			  0x1a, 0x18, 0x31, 0x3f, 0x4d, 0x4c, 0x54, 0x65, 0x6b,
 			  0x70, 0x7f, 0x82, 0x7e, 0x8a, 0x99, 0x4a, 0x48, 0x49,
 			  0x4b, 0x4a, 0x4c, 0x4b, 0x7f, 0x00, 0x04, 0x0c, 0x11,
 			  0x13, 0x17, 0x1a, 0x18, 0x31, 0x3f, 0x4d, 0x4c, 0x54,
 			  0x65, 0x6b, 0x70, 0x7f, 0x82, 0x7e, 0x8a, 0x99, 0x4a,
 			  0x48, 0x49, 0x4b, 0x4a, 0x4c, 0x4b, 0x7f);
 	dsi_dcs_write_seq(device, 0xcc, 0x0b);
 	dsi_dcs_write_seq(device, 0xc0, 0x1f, 0x31);
 	dsi_dcs_write_seq(device, 0xb6, 0x7d, 0x7d);
 	dsi_dcs_write_seq(device, 0xd4, 0x02);
 	dsi_dcs_write_seq(device, 0xbd, 0x01);
 	dsi_dcs_write_seq(device, 0xb1, 0x00);
 	dsi_dcs_write_seq(device, 0xbd, 0x00);
 	dsi_dcs_write_seq(device, 0xc6, 0xed);

 	ret = mipi_dsi_dcs_exit_sleep_mode(device);
 	if (ret)
 		return ret;

 	/* Panel is operational 120 msec after reset */
 	mdelay(120);

 	ret = mipi_dsi_dcs_set_display_on(device);
 	if (ret)
 		return ret;

 	return 0;
 }

 static int hx8394_panel_enable_backlight(struct udevice *dev)
 {
 	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
 	struct mipi_dsi_device *device = plat->device;
 	struct hx8394_panel_priv *priv = dev_get_priv(dev);
 	int ret;

 	ret = mipi_dsi_attach(device);
 	if (ret < 0) {
 		printf("mipi_dsi_attach failed %d\n", ret);
 		return ret;
 	}

 	ret = hx8394_init_sequence(dev);
 	if (ret) {
 		printf("hx8394_init_sequence failed %d\n", ret);
 		return ret;
 	}

 	if (priv->backlight) {
 		ret = backlight_enable(priv->backlight);
 		if (ret) {
 			printf("backlight enabled failed %d\n", ret);
 			return ret;
 		}

 		backlight_set_brightness(priv->backlight, 60);
 	}

 	mdelay(10);

 	return 0;
 }

 static int hx8394_panel_get_display_timing(struct udevice *dev,
 					   struct display_timing *timings)
 {
 	memcpy(timings, &default_timing, sizeof(*timings));

 	return 0;
 }

 static int hx8394_panel_of_to_plat(struct udevice *dev)
 {
 	struct hx8394_panel_priv *priv = dev_get_priv(dev);
 	int ret;

 	if (CONFIG_IS_ENABLED(DM_REGULATOR)) {
 		ret =  device_get_supply_regulator(dev, "vcc-supply",
 						   &priv->reg_vcc);
 		if (ret && ret != -ENOENT) {
 			dev_err(dev, "Warning: cannot get vcc supply\n");
 			return ret;
 		}

 		ret =  device_get_supply_regulator(dev, "iovcc-supply",
 						   &priv->reg_iovcc);
 		if (ret && ret != -ENOENT) {
 			dev_err(dev, "Warning: cannot get iovcc supply\n");
 			return ret;
 		}
 	}

 	ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
 					   "backlight", &priv->backlight);
 	if (ret)
 		dev_warn(dev, "failed to get backlight\n");

 	ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset,
 				   GPIOD_IS_OUT);
 	if (ret) {
 		dev_err(dev, "warning: cannot get reset GPIO (%d)\n", ret);
 		if (ret != -ENOENT)
 			return ret;
 	}

 	return 0;
 }

 static int hx8394_panel_probe(struct udevice *dev)
 {
 	struct hx8394_panel_priv *priv = dev_get_priv(dev);
 	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
 	int ret;

 	dm_gpio_set_value(&priv->reset, true);

 	if (CONFIG_IS_ENABLED(DM_REGULATOR)) {
 		dev_dbg(dev, "enable vcc '%s'\n", priv->reg_vcc->name);
 		ret = regulator_set_enable(priv->reg_vcc, true);
 		if (ret)
 			return ret;

 		dev_dbg(dev, "enable iovcc '%s'\n", priv->reg_iovcc->name);
 		ret = regulator_set_enable(priv->reg_iovcc, true);
 		if (ret) {
 			regulator_set_enable(priv->reg_vcc, false);
 			return ret;
 		}
 	}

 	mdelay(5);
 	dm_gpio_set_value(&priv->reset, false);

 	mdelay(180);

 	/* fill characteristics of DSI data link */
 	plat->lanes = 4;
 	plat->format = MIPI_DSI_FMT_RGB888;
 	plat->mode_flags = MIPI_DSI_MODE_VIDEO |
 			   MIPI_DSI_MODE_VIDEO_BURST;

 	return 0;
 }

 static const struct panel_ops hx8394_panel_ops = {
 	.enable_backlight = hx8394_panel_enable_backlight,
 	.get_display_timing = hx8394_panel_get_display_timing,
 };

 static const struct udevice_id hx8394_panel_ids[] = {
 	{ .compatible = "hannstar,hsd060bhw4" },
 	{ }
 };

 U_BOOT_DRIVER(hx8394_panel) = {
 	.name		= "hx8394_panel",
 	.id		= UCLASS_PANEL,
 	.of_match	= hx8394_panel_ids,
 	.ops		= &hx8394_panel_ops,
 	.of_to_plat	= hx8394_panel_of_to_plat,
 	.probe		= hx8394_panel_probe,
 	.plat_auto	= sizeof(struct mipi_dsi_panel_plat),
 	.priv_auto	= sizeof(struct hx8394_panel_priv),
 };
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright (C) 2022 Ondrej Jirman <megi@xff.cz>
	*/
	#include <backlight.h>
	#include <dm.h>
	#include <mipi_dsi.h>
	#include <panel.h>
	#include <asm/gpio.h>
	#include <dm/device_compat.h>
	#include <linux/delay.h>
	#include <power/regulator.h>

	struct hx8394_panel_priv {
	struct udevice *reg_vcc;
	struct udevice *reg_iovcc;
	struct gpio_desc reset;
	struct udevice *backlight;
	};

	static const struct display_timing default_timing = {
	.pixelclock.typ = 74250000,
	.hactive.typ = 720,
	.hfront_porch.typ = 40,
	.hback_porch.typ = 40,
	.hsync_len.typ = 46,
	.vactive.typ = 1440,
	.vfront_porch.typ = 7,
	.vback_porch.typ = 9,
	.vsync_len.typ = 7,
	.flags = DISPLAY_FLAGS_VSYNC_LOW \| DISPLAY_FLAGS_HSYNC_LOW,
	};

	#define dsi_dcs_write_seq(device, seq...) do { \
	static const u8 d[] = { seq }; \
	int ret; \
	ret = mipi_dsi_dcs_write_buffer(device, d, ARRAY_SIZE(d)); \
	if (ret < 0) \
	return ret; \
	} while (0)

	static int hx8394_init_sequence(struct udevice *dev)
	{
	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
	struct mipi_dsi_device *device = plat->device;
	int ret;

	dsi_dcs_write_seq(device, 0xb9, 0xff, 0x83, 0x94);
	dsi_dcs_write_seq(device, 0xb1, 0x48, 0x11, 0x71, 0x09, 0x32, 0x24,
	0x71, 0x31, 0x55, 0x30);
	dsi_dcs_write_seq(device, 0xba, 0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0);
	dsi_dcs_write_seq(device, 0xb2, 0x00, 0x80, 0x78, 0x0c, 0x07);
	dsi_dcs_write_seq(device, 0xb4, 0x12, 0x63, 0x12, 0x63, 0x12, 0x63,
	0x01, 0x0c, 0x7c, 0x55, 0x00, 0x3f, 0x12, 0x6b, 0x12,
	0x6b, 0x12, 0x6b, 0x01, 0x0c, 0x7c);
	dsi_dcs_write_seq(device, 0xd3, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x1c,
	0x00, 0x00, 0x32, 0x10, 0x09, 0x00, 0x09, 0x32, 0x15,
	0xad, 0x05, 0xad, 0x32, 0x00, 0x00, 0x00, 0x00, 0x37,
	0x03, 0x0b, 0x0b, 0x37, 0x00, 0x00, 0x00, 0x0c, 0x40);
	dsi_dcs_write_seq(device, 0xd5, 0x19, 0x19, 0x18, 0x18, 0x1b, 0x1b,
	0x1a, 0x1a, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
	0x07, 0x20, 0x21, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x24, 0x25, 0x18,
	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
	0x18, 0x18);
	dsi_dcs_write_seq(device, 0xd6, 0x18, 0x18, 0x19, 0x19, 0x1b, 0x1b,
	0x1a, 0x1a, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
	0x00, 0x25, 0x24, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x21, 0x20, 0x18,
	0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
	0x18, 0x18);
	dsi_dcs_write_seq(device, 0xe0, 0x00, 0x04, 0x0c, 0x12, 0x14, 0x18,
	0x1a, 0x18, 0x31, 0x3f, 0x4d, 0x4c, 0x54, 0x65, 0x6b,
	0x70, 0x7f, 0x82, 0x7e, 0x8a, 0x99, 0x4a, 0x48, 0x49,
	0x4b, 0x4a, 0x4c, 0x4b, 0x7f, 0x00, 0x04, 0x0c, 0x11,
	0x13, 0x17, 0x1a, 0x18, 0x31, 0x3f, 0x4d, 0x4c, 0x54,
	0x65, 0x6b, 0x70, 0x7f, 0x82, 0x7e, 0x8a, 0x99, 0x4a,
	0x48, 0x49, 0x4b, 0x4a, 0x4c, 0x4b, 0x7f);
	dsi_dcs_write_seq(device, 0xcc, 0x0b);
	dsi_dcs_write_seq(device, 0xc0, 0x1f, 0x31);
	dsi_dcs_write_seq(device, 0xb6, 0x7d, 0x7d);
	dsi_dcs_write_seq(device, 0xd4, 0x02);
	dsi_dcs_write_seq(device, 0xbd, 0x01);
	dsi_dcs_write_seq(device, 0xb1, 0x00);
	dsi_dcs_write_seq(device, 0xbd, 0x00);
	dsi_dcs_write_seq(device, 0xc6, 0xed);

	ret = mipi_dsi_dcs_exit_sleep_mode(device);
	if (ret)
	return ret;

	/* Panel is operational 120 msec after reset */
	mdelay(120);

	ret = mipi_dsi_dcs_set_display_on(device);
	if (ret)
	return ret;

	return 0;
	}

	static int hx8394_panel_enable_backlight(struct udevice *dev)
	{
	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
	struct mipi_dsi_device *device = plat->device;
	struct hx8394_panel_priv *priv = dev_get_priv(dev);
	int ret;

	ret = mipi_dsi_attach(device);
	if (ret < 0) {
	printf("mipi_dsi_attach failed %d\n", ret);
	return ret;
	}

	ret = hx8394_init_sequence(dev);
	if (ret) {
	printf("hx8394_init_sequence failed %d\n", ret);
	return ret;
	}

	if (priv->backlight) {
	ret = backlight_enable(priv->backlight);
	if (ret) {
	printf("backlight enabled failed %d\n", ret);
	return ret;
	}

	backlight_set_brightness(priv->backlight, 60);
	}

	mdelay(10);

	return 0;
	}

	static int hx8394_panel_get_display_timing(struct udevice *dev,
	struct display_timing *timings)
	{
	memcpy(timings, &default_timing, sizeof(*timings));

	return 0;
	}

	static int hx8394_panel_of_to_plat(struct udevice *dev)
	{
	struct hx8394_panel_priv *priv = dev_get_priv(dev);
	int ret;

	if (CONFIG_IS_ENABLED(DM_REGULATOR)) {
	ret = device_get_supply_regulator(dev, "vcc-supply",
	&priv->reg_vcc);
	if (ret && ret != -ENOENT) {
	dev_err(dev, "Warning: cannot get vcc supply\n");
	return ret;
	}

	ret = device_get_supply_regulator(dev, "iovcc-supply",
	&priv->reg_iovcc);
	if (ret && ret != -ENOENT) {
	dev_err(dev, "Warning: cannot get iovcc supply\n");
	return ret;
	}
	}

	ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
	"backlight", &priv->backlight);
	if (ret)
	dev_warn(dev, "failed to get backlight\n");

	ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset,
	GPIOD_IS_OUT);
	if (ret) {
	dev_err(dev, "warning: cannot get reset GPIO (%d)\n", ret);
	if (ret != -ENOENT)
	return ret;
	}

	return 0;
	}

	static int hx8394_panel_probe(struct udevice *dev)
	{
	struct hx8394_panel_priv *priv = dev_get_priv(dev);
	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
	int ret;

	dm_gpio_set_value(&priv->reset, true);

	if (CONFIG_IS_ENABLED(DM_REGULATOR)) {
	dev_dbg(dev, "enable vcc '%s'\n", priv->reg_vcc->name);
	ret = regulator_set_enable(priv->reg_vcc, true);
	if (ret)
	return ret;

	dev_dbg(dev, "enable iovcc '%s'\n", priv->reg_iovcc->name);
	ret = regulator_set_enable(priv->reg_iovcc, true);
	if (ret) {
	regulator_set_enable(priv->reg_vcc, false);
	return ret;
	}
	}

	mdelay(5);
	dm_gpio_set_value(&priv->reset, false);

	mdelay(180);

	/* fill characteristics of DSI data link */
	plat->lanes = 4;
	plat->format = MIPI_DSI_FMT_RGB888;
	plat->mode_flags = MIPI_DSI_MODE_VIDEO \|
	MIPI_DSI_MODE_VIDEO_BURST;

	return 0;
	}

	static const struct panel_ops hx8394_panel_ops = {
	.enable_backlight = hx8394_panel_enable_backlight,
	.get_display_timing = hx8394_panel_get_display_timing,
	};

	static const struct udevice_id hx8394_panel_ids[] = {
	{ .compatible = "hannstar,hsd060bhw4" },
	{ }
	};

	U_BOOT_DRIVER(hx8394_panel) = {
	.name = "hx8394_panel",
	.id = UCLASS_PANEL,
	.of_match = hx8394_panel_ids,
	.ops = &hx8394_panel_ops,
	.of_to_plat = hx8394_panel_of_to_plat,
	.probe = hx8394_panel_probe,
	.plat_auto = sizeof(struct mipi_dsi_panel_plat),
	.priv_auto = sizeof(struct hx8394_panel_priv),
	};