[thirdparty/u-boot.git] / drivers / video / renesas-r61307.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Renesas R61307 panel driver
 *
 * Copyright (c) 2022 Svyatoslav Ryhel <clamor95@gmail.com>
 */

#include <common.h>
#include <backlight.h>
#include <dm.h>
#include <panel.h>
#include <log.h>
#include <misc.h>
#include <mipi_display.h>
#include <mipi_dsi.h>
#include <asm/gpio.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <power/regulator.h>

/*
 * The datasheet is not publicly available, all values are
 * taken from the downstream. If you have access to datasheets,
 * corrections are welcome.
 */

#define R61307_MACP		0xB0 /* Manufacturer CMD Protect */

#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_priv {
	struct udevice *vcc;
	struct udevice *iovcc;

	struct udevice *backlight;

	struct gpio_desc reset_gpio;

	bool dig_cont_adj;
	bool inversion;
	u32 gamma;
};

static const u8 macp_on[] = {
	R61307_MACP, 0x03
};

static const u8 macp_off[] = {
	R61307_MACP, 0x04
};

static const u8 address_mode[] = {
	MIPI_DCS_SET_ADDRESS_MODE
};

static const u8 contrast_setting[] = {
	R61307_CONTRAST_SET,
	0xdc, 0xb4, 0xff
};

static const u8 column_inversion[] = {
	R61307_INVERSION,
	0x00, 0x50, 0x03, 0x22,
	0x16, 0x06, 0x60, 0x11
};

static const u8 line_inversion[] = {
	R61307_INVERSION,
	0x00, 0x10, 0x03, 0x22,
	0x16, 0x06, 0x60, 0x01
};

static const u8 gamma_setting[][25] = {
	{},
	{
		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 struct display_timing default_timing = {
	.pixelclock.typ		= 62000000,
	.hactive.typ		= 768,
	.hfront_porch.typ	= 116,
	.hback_porch.typ	= 81,
	.hsync_len.typ		= 5,
	.vactive.typ		= 1024,
	.vfront_porch.typ	= 24,
	.vback_porch.typ	= 8,
	.vsync_len.typ		= 2,
};

static int renesas_r61307_enable_backlight(struct udevice *dev)
{
	struct renesas_r61307_priv *priv = dev_get_priv(dev);
	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
	struct mipi_dsi_device *dsi = plat->device;
	int ret;

	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
	if (ret < 0) {
		log_err("failed to exit sleep mode: %d\n", ret);
		return ret;
	}

	mdelay(80);

	mipi_dsi_dcs_write_buffer(dsi, address_mode,
				  sizeof(address_mode));

	mdelay(20);

	ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT << 4);
	if (ret < 0) {
		log_err("failed to set pixel format: %d\n", ret);
		return ret;
	}

	/* MACP Off */
	mipi_dsi_generic_write(dsi, macp_off, sizeof(macp_off));

	if (priv->dig_cont_adj)
		mipi_dsi_generic_write(dsi, contrast_setting,
				       sizeof(contrast_setting));

	if (priv->gamma)
		mipi_dsi_generic_write(dsi, gamma_setting[priv->gamma],
				       sizeof(gamma_setting[priv->gamma]));

	if (priv->inversion)
		mipi_dsi_generic_write(dsi, column_inversion,
				       sizeof(column_inversion));
	else
		mipi_dsi_generic_write(dsi, line_inversion,
				       sizeof(line_inversion));

	/* MACP On */
	mipi_dsi_generic_write(dsi, macp_on, sizeof(macp_on));

	ret = mipi_dsi_dcs_set_display_on(dsi);
	if (ret < 0) {
		log_err("failed to set display on: %d\n", ret);
		return ret;
	}
	mdelay(50);

	return 0;
}

static int renesas_r61307_set_backlight(struct udevice *dev, int percent)
{
	struct renesas_r61307_priv *priv = dev_get_priv(dev);
	int ret;

	ret = backlight_enable(priv->backlight);
	if (ret)
		return ret;

	mdelay(5);

	return backlight_set_brightness(priv->backlight, percent);
}

static int renesas_r61307_timings(struct udevice *dev,
				  struct display_timing *timing)
{
	memcpy(timing, &default_timing, sizeof(*timing));
	return 0;
}

static int renesas_r61307_of_to_plat(struct udevice *dev)
{
	struct renesas_r61307_priv *priv = dev_get_priv(dev);
	int ret;

	ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
					   "backlight", &priv->backlight);
	if (ret) {
		log_err("Cannot get backlight: ret = %d\n", ret);
		return ret;
	}

	ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
					   "vcc-supply", &priv->vcc);
	if (ret) {
		log_err("Cannot get vcc-supply: ret = %d\n", ret);
		return ret;
	}

	ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
					   "iovcc-supply", &priv->iovcc);
	if (ret) {
		log_err("Cannot get iovcc-supply: ret = %d\n", ret);
		return ret;
	}

	ret = gpio_request_by_name(dev, "reset-gpios", 0,
				   &priv->reset_gpio, GPIOD_IS_OUT);
	if (ret) {
		log_err("Could not decode reser-gpios (%d)\n", ret);
		return ret;
	}

	priv->dig_cont_adj = dev_read_bool(dev, "renesas,contrast");
	priv->inversion = dev_read_bool(dev, "renesas,inversion");
	priv->gamma = dev_read_u32_default(dev, "renesas,gamma", 0);

	return 0;
}

static int renesas_r61307_hw_init(struct udevice *dev)
{
	struct renesas_r61307_priv *priv = dev_get_priv(dev);
	int ret;

	ret = regulator_set_enable_if_allowed(priv->vcc, 1);
	if (ret) {
		log_debug("%s: enabling vcc-supply failed (%d)\n",
			  __func__, ret);
		return ret;
	}
	mdelay(5);

	ret = regulator_set_enable_if_allowed(priv->iovcc, 1);
	if (ret) {
		log_debug("%s: enabling iovcc-supply failed (%d)\n",
			  __func__, ret);
		return ret;
	}

	ret = dm_gpio_set_value(&priv->reset_gpio, 0);
	if (ret) {
		log_debug("%s: changing reset-gpio failed (%d)\n",
			  __func__, ret);
		return ret;
	}
	mdelay(5);

	ret = dm_gpio_set_value(&priv->reset_gpio, 1);
	if (ret) {
		log_debug("%s: changing reset-gpio failed (%d)\n",
			  __func__, ret);
		return ret;
	}

	mdelay(5);

	return 0;
}

static int renesas_r61307_probe(struct udevice *dev)
{
	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);

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

	return renesas_r61307_hw_init(dev);
}

static const struct panel_ops renesas_r61307_ops = {
	.enable_backlight	= renesas_r61307_enable_backlight,
	.set_backlight		= renesas_r61307_set_backlight,
	.get_display_timing	= renesas_r61307_timings,
};

static const struct udevice_id renesas_r61307_ids[] = {
	{ .compatible = "koe,tx13d100vm0eaa" },
	{ .compatible = "hitachi,tx13d100vm0eaa" },
	{ }
};

U_BOOT_DRIVER(renesas_r61307) = {
	.name		= "renesas_r61307",
	.id		= UCLASS_PANEL,
	.of_match	= renesas_r61307_ids,
	.ops		= &renesas_r61307_ops,
	.of_to_plat	= renesas_r61307_of_to_plat,
	.probe		= renesas_r61307_probe,
	.plat_auto	= sizeof(struct mipi_dsi_panel_plat),
	.priv_auto	= sizeof(struct renesas_r61307_priv),
};
Commit	Line	Data
dcee478a SR	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Renesas R61307 panel driver
	4	*
	5	* Copyright (c) 2022 Svyatoslav Ryhel <clamor95@gmail.com>
	6	*/
	7
d678a59d	8	#include <common.h>
dcee478a SR	9	#include <backlight.h>
	10	#include <dm.h>
	11	#include <panel.h>
	12	#include <log.h>
	13	#include <misc.h>
	14	#include <mipi_display.h>
	15	#include <mipi_dsi.h>
	16	#include <asm/gpio.h>
	17	#include <linux/delay.h>
	18	#include <linux/err.h>
	19	#include <power/regulator.h>
	20
	21	/*
81f3a665	22	* The datasheet is not publicly available, all values are
dcee478a SR	23	* taken from the downstream. If you have access to datasheets,
	24	* corrections are welcome.
	25	*/
	26
	27	#define R61307_MACP 0xB0 /* Manufacturer CMD Protect */
	28
	29	#define R61307_INVERSION 0xC1
	30	#define R61307_GAMMA_SET_A 0xC8 /* Gamma Setting A */
	31	#define R61307_GAMMA_SET_B 0xC9 /* Gamma Setting B */
	32	#define R61307_GAMMA_SET_C 0xCA /* Gamma Setting C */
	33	#define R61307_CONTRAST_SET 0xCC
	34
	35	struct renesas_r61307_priv {
	36	struct udevice *vcc;
	37	struct udevice *iovcc;
	38
	39	struct udevice *backlight;
	40
	41	struct gpio_desc reset_gpio;
	42
	43	bool dig_cont_adj;
	44	bool inversion;
	45	u32 gamma;
	46	};
	47
	48	static const u8 macp_on[] = {
	49	R61307_MACP, 0x03
	50	};
	51
	52	static const u8 macp_off[] = {
	53	R61307_MACP, 0x04
	54	};
	55
	56	static const u8 address_mode[] = {
	57	MIPI_DCS_SET_ADDRESS_MODE
	58	};
	59
	60	static const u8 contrast_setting[] = {
	61	R61307_CONTRAST_SET,
	62	0xdc, 0xb4, 0xff
	63	};
	64
	65	static const u8 column_inversion[] = {
	66	R61307_INVERSION,
	67	0x00, 0x50, 0x03, 0x22,
	68	0x16, 0x06, 0x60, 0x11
	69	};
	70
	71	static const u8 line_inversion[] = {
	72	R61307_INVERSION,
	73	0x00, 0x10, 0x03, 0x22,
	74	0x16, 0x06, 0x60, 0x01
	75	};
	76
	77	static const u8 gamma_setting[][25] = {
	78	{},
	79	{
	80	R61307_GAMMA_SET_A,
	81	0x00, 0x06, 0x0a, 0x0f,
	82	0x14, 0x1f, 0x1f, 0x17,
	83	0x12, 0x0c, 0x09, 0x06,
	84	0x00, 0x06, 0x0a, 0x0f,
	85	0x14, 0x1f, 0x1f, 0x17,
	86	0x12, 0x0c, 0x09, 0x06
87	},
88	{
89	R61307_GAMMA_SET_A,
90	0x00, 0x05, 0x0b, 0x0f,
91	0x11, 0x1d, 0x20, 0x18,
92	0x18, 0x09, 0x07, 0x06,
93	0x00, 0x05, 0x0b, 0x0f,
94	0x11, 0x1d, 0x20, 0x18,
95	0x18, 0x09, 0x07, 0x06
96	},
97	{
98	R61307_GAMMA_SET_A,
99	0x0b, 0x0d, 0x10, 0x14,
100	0x13, 0x1d, 0x20, 0x18,
101	0x12, 0x09, 0x07, 0x06,
102	0x0a, 0x0c, 0x10, 0x14,
103	0x13, 0x1d, 0x20, 0x18,
104	0x12, 0x09, 0x07, 0x06
105	},
106	};
107
108	static struct display_timing default_timing = {
109	.pixelclock.typ = 62000000,
110	.hactive.typ = 768,
111	.hfront_porch.typ = 116,
112	.hback_porch.typ = 81,
113	.hsync_len.typ = 5,
114	.vactive.typ = 1024,
115	.vfront_porch.typ = 24,
116	.vback_porch.typ = 8,
117	.vsync_len.typ = 2,
118	};
119
120	static int renesas_r61307_enable_backlight(struct udevice *dev)
dcee478a SR	121	{
	122	struct renesas_r61307_priv *priv = dev_get_priv(dev);
	123	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
	124	struct mipi_dsi_device *dsi = plat->device;
	125	int ret;
	126
	127	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
	128	if (ret < 0) {
	129	log_err("failed to exit sleep mode: %d\n", ret);
	130	return ret;
	131	}
	132
	133	mdelay(80);
	134
	135	mipi_dsi_dcs_write_buffer(dsi, address_mode,
	136	sizeof(address_mode));
	137
	138	mdelay(20);
	139
	140	ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT << 4);
	141	if (ret < 0) {
	142	log_err("failed to set pixel format: %d\n", ret);
	143	return ret;
	144	}
	145
	146	/* MACP Off */
	147	mipi_dsi_generic_write(dsi, macp_off, sizeof(macp_off));
	148
	149	if (priv->dig_cont_adj)
	150	mipi_dsi_generic_write(dsi, contrast_setting,
	151	sizeof(contrast_setting));
	152
	153	if (priv->gamma)
	154	mipi_dsi_generic_write(dsi, gamma_setting[priv->gamma],
	155	sizeof(gamma_setting[priv->gamma]));
	156
	157	if (priv->inversion)
	158	mipi_dsi_generic_write(dsi, column_inversion,
	159	sizeof(column_inversion));
	160	else
	161	mipi_dsi_generic_write(dsi, line_inversion,
	162	sizeof(line_inversion));
	163
	164	/* MACP On */
	165	mipi_dsi_generic_write(dsi, macp_on, sizeof(macp_on));
	166
	167	ret = mipi_dsi_dcs_set_display_on(dsi);
	168	if (ret < 0) {
	169	log_err("failed to set display on: %d\n", ret);
	170	return ret;
	171	}
dcee478a SR	172	mdelay(50);
dcee478a SR	173
9970634f SR	174	return 0;
	175	}
	176
	177	static int renesas_r61307_set_backlight(struct udevice *dev, int percent)
	178	{
	179	struct renesas_r61307_priv *priv = dev_get_priv(dev);
	180	int ret;
	181
dcee478a SR	182	ret = backlight_enable(priv->backlight);
	183	if (ret)
	184	return ret;
	185
9970634f	186	mdelay(5);
dcee478a	187
9970634f	188	return backlight_set_brightness(priv->backlight, percent);
dcee478a SR	189	}
	190
	191	static int renesas_r61307_timings(struct udevice *dev,
	192	struct display_timing *timing)
	193	{
	194	memcpy(timing, &default_timing, sizeof(*timing));
	195	return 0;
	196	}
	197
	198	static int renesas_r61307_of_to_plat(struct udevice *dev)
	199	{
	200	struct renesas_r61307_priv *priv = dev_get_priv(dev);
	201	int ret;
	202
	203	ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
	204	"backlight", &priv->backlight);
	205	if (ret) {
	206	log_err("Cannot get backlight: ret = %d\n", ret);
	207	return ret;
	208	}
	209
	210	ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
	211	"vcc-supply", &priv->vcc);
	212	if (ret) {
	213	log_err("Cannot get vcc-supply: ret = %d\n", ret);
	214	return ret;
	215	}
	216
	217	ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
	218	"iovcc-supply", &priv->iovcc);
	219	if (ret) {
	220	log_err("Cannot get iovcc-supply: ret = %d\n", ret);
	221	return ret;
	222	}
	223
	224	ret = gpio_request_by_name(dev, "reset-gpios", 0,
	225	&priv->reset_gpio, GPIOD_IS_OUT);
	226	if (ret) {
	227	log_err("Could not decode reser-gpios (%d)\n", ret);
	228	return ret;
	229	}
	230
	231	priv->dig_cont_adj = dev_read_bool(dev, "renesas,contrast");
	232	priv->inversion = dev_read_bool(dev, "renesas,inversion");
	233	priv->gamma = dev_read_u32_default(dev, "renesas,gamma", 0);
	234
	235	return 0;
	236	}
	237
9970634f SR	238	static int renesas_r61307_hw_init(struct udevice *dev)
	239	{
	240	struct renesas_r61307_priv *priv = dev_get_priv(dev);
	241	int ret;
	242
	243	ret = regulator_set_enable_if_allowed(priv->vcc, 1);
	244	if (ret) {
	245	log_debug("%s: enabling vcc-supply failed (%d)\n",
	246	__func__, ret);
	247	return ret;
	248	}
	249	mdelay(5);
	250
	251	ret = regulator_set_enable_if_allowed(priv->iovcc, 1);
	252	if (ret) {
	253	log_debug("%s: enabling iovcc-supply failed (%d)\n",
	254	__func__, ret);
	255	return ret;
	256	}
	257
	258	ret = dm_gpio_set_value(&priv->reset_gpio, 0);
	259	if (ret) {
	260	log_debug("%s: changing reset-gpio failed (%d)\n",
	261	__func__, ret);
	262	return ret;
	263	}
	264	mdelay(5);
	265
	266	ret = dm_gpio_set_value(&priv->reset_gpio, 1);
	267	if (ret) {
	268	log_debug("%s: changing reset-gpio failed (%d)\n",
	269	__func__, ret);
	270	return ret;
	271	}
	272
	273	mdelay(5);
	274
	275	return 0;
	276	}
	277
dcee478a SR	278	static int renesas_r61307_probe(struct udevice *dev)
	279	{
	280	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
	281
	282	/* fill characteristics of DSI data link */
	283	plat->lanes = 4;
	284	plat->format = MIPI_DSI_FMT_RGB888;
	285	plat->mode_flags = MIPI_DSI_MODE_VIDEO;
	286
9970634f	287	return renesas_r61307_hw_init(dev);
dcee478a SR	288	}
	289
	290	static const struct panel_ops renesas_r61307_ops = {
	291	.enable_backlight = renesas_r61307_enable_backlight,
	292	.set_backlight = renesas_r61307_set_backlight,
	293	.get_display_timing = renesas_r61307_timings,
	294	};
	295
	296	static const struct udevice_id renesas_r61307_ids[] = {
	297	{ .compatible = "koe,tx13d100vm0eaa" },
	298	{ .compatible = "hitachi,tx13d100vm0eaa" },
	299	{ }
	300	};
	301
	302	U_BOOT_DRIVER(renesas_r61307) = {
	303	.name = "renesas_r61307",
	304	.id = UCLASS_PANEL,
	305	.of_match = renesas_r61307_ids,
	306	.ops = &renesas_r61307_ops,
	307	.of_to_plat = renesas_r61307_of_to_plat,
	308	.probe = renesas_r61307_probe,
	309	.plat_auto = sizeof(struct mipi_dsi_panel_plat),
	310	.priv_auto = sizeof(struct renesas_r61307_priv),
	311	};