diff mbox

[v2,07/10] video: add support of panel rm68200

Message ID 1520005451-23217-8-git-send-email-yannick.fertre@st.com (mailing list archive)
State New, archived
Headers show

Commit Message

Yannick FERTRE March 2, 2018, 3:44 p.m. UTC 
Support for Raydium rm68200 720p dsi 2dl video mode panel.

Signed-off-by: yannick fertre <yannick.fertre@st.com>
---
 drivers/video/Kconfig           |   8 +
 drivers/video/Makefile          |   1 +
 drivers/video/raydium-rm68200.c | 329 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 338 insertions(+)
 create mode 100644 drivers/video/raydium-rm68200.c

Comments

Patrice CHOTARD March 13, 2018, 8:59 a.m. UTC | #1 
Hi yannick

On 03/02/2018 04:44 PM, yannick fertre wrote:
> Support for Raydium rm68200 720p dsi 2dl video mode panel.

> 

> Signed-off-by: yannick fertre <yannick.fertre@st.com>

> ---

>   drivers/video/Kconfig           |   8 +

>   drivers/video/Makefile          |   1 +

>   drivers/video/raydium-rm68200.c | 329 ++++++++++++++++++++++++++++++++++++++++

>   3 files changed, 338 insertions(+)

>   create mode 100644 drivers/video/raydium-rm68200.c

> 

> diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig

> index 0f641d7..2561c59 100644

> --- a/drivers/video/Kconfig

> +++ b/drivers/video/Kconfig

> @@ -328,6 +328,14 @@ config VIDEO_LCD_ORISETECH_OTM8009A

>   	---help---

>   	Support for Orise Tech otm8009a 480p dsi 2dl video mode panel.

>   

> +config VIDEO_LCD_RAYDIUM_RM68200

> +	bool "RM68200 DSI LCD panel support"

> +	depends on DM_VIDEO

> +	select VIDEO_MIPI_DSI

> +	default n

> +	---help---

> +	Support for Raydium rm68200 720x1280 dsi 2dl video mode panel.

> +

>   config VIDEO_LCD_SSD2828

>   	bool "SSD2828 bridge chip"

>   	default n

> diff --git a/drivers/video/Makefile b/drivers/video/Makefile

> index 50be569..1a6c8d3 100644

> --- a/drivers/video/Makefile

> +++ b/drivers/video/Makefile

> @@ -38,6 +38,7 @@ obj-$(CONFIG_VIDEO_DA8XX) += da8xx-fb.o videomodes.o

>   obj-$(CONFIG_VIDEO_LCD_ANX9804) += anx9804.o

>   obj-$(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM) += hitachi_tx18d42vm_lcd.o

>   obj-$(CONFIG_VIDEO_LCD_ORISETECH_OTM8009A) += orisetech_otm8009a.o

> +obj-$(CONFIG_VIDEO_LCD_RAYDIUM_RM68200) += raydium-rm68200.o

>   obj-$(CONFIG_VIDEO_LCD_SSD2828) += ssd2828.o

>   obj-$(CONFIG_VIDEO_MB862xx) += mb862xx.o videomodes.o

>   obj-$(CONFIG_VIDEO_MX3) += mx3fb.o videomodes.o

> diff --git a/drivers/video/raydium-rm68200.c b/drivers/video/raydium-rm68200.c

> new file mode 100644

> index 0000000..46afb58

> --- /dev/null

> +++ b/drivers/video/raydium-rm68200.c

> @@ -0,0 +1,329 @@

> +/*

> + * Copyright (C) 2018 STMicroelectronics - All Rights Reserved

> + * Author(s): Yannick Fertre <yannick.fertre@st.com> for STMicroelectronics.

> + *	      Philippe Cornu <philippe.cornu@st.com> for STMicroelectronics.

> + *

> + * This rm68200 panel driver is based on the panel driver from

> + * drivers/gpu/drm/panel/panel-raydium-rm68200.c (kernel linux)

> + *

> + * SPDX-License-Identifier: GPL-2.0

> + */

> +#include <asm/gpio.h>

> +#include <backlight.h>

> +#include <common.h>

> +#include <dm.h>

> +#include <panel.h>

> +#include <power/regulator.h>

> +#include <mipi_display.h>

> +

> +DECLARE_GLOBAL_DATA_PTR;

> +

> +#define DRV_NAME "raydium_rm68200"

> +

> +/*** Manufacturer Command Set ***/

> +#define MCS_CMD_MODE_SW	0xFE /* CMD Mode Switch */

> +#define MCS_CMD1_UCS	0x00 /* User Command Set (UCS = CMD1) */

> +#define MCS_CMD2_P0	0x01 /* Manufacture Command Set Page0 (CMD2 P0) */

> +#define MCS_CMD2_P1	0x02 /* Manufacture Command Set Page1 (CMD2 P1) */

> +#define MCS_CMD2_P2	0x03 /* Manufacture Command Set Page2 (CMD2 P2) */

> +#define MCS_CMD2_P3	0x04 /* Manufacture Command Set Page3 (CMD2 P3) */

> +

> +/* CMD2 P0 commands (Display Options and Power) */

> +#define MCS_STBCTR	0x12 /* TE1 Output Setting Zig-Zag Connection */

> +#define MCS_SGOPCTR	0x16 /* Source Bias Current */

> +#define MCS_SDCTR	0x1A /* Source Output Delay Time */

> +#define MCS_INVCTR	0x1B /* Inversion Type */

> +#define MCS_EXT_PWR_IC	0x24 /* External PWR IC Control */

> +#define MCS_SETAVDD	0x27 /* PFM Control for AVDD Output */

> +#define MCS_SETAVEE	0x29 /* PFM Control for AVEE Output */

> +#define MCS_BT2CTR	0x2B /* DDVDL Charge Pump Control */

> +#define MCS_BT3CTR	0x2F /* VGH Charge Pump Control */

> +#define MCS_BT4CTR	0x34 /* VGL Charge Pump Control */

> +#define MCS_VCMCTR	0x46 /* VCOM Output Level Control */

> +#define MCS_SETVGN	0x52 /* VG M/S N Control */

> +#define MCS_SETVGP	0x54 /* VG M/S P Control */

> +#define MCS_SW_CTRL	0x5F /* Interface Control for PFM and MIPI */

> +

> +/* CMD2 P2 commands (GOA Timing Control) - no description in datasheet */

> +#define GOA_VSTV1	0x00

> +#define GOA_VSTV2	0x07

> +#define GOA_VCLK1	0x0E

> +#define GOA_VCLK2	0x17

> +#define GOA_VCLK_OPT1	0x20

> +#define GOA_BICLK1	0x2A

> +#define GOA_BICLK2	0x37

> +#define GOA_BICLK3	0x44

> +#define GOA_BICLK4	0x4F

> +#define GOA_BICLK_OPT1	0x5B

> +#define GOA_BICLK_OPT2	0x60

> +#define MCS_GOA_GPO1	0x6D

> +#define MCS_GOA_GPO2	0x71

> +#define MCS_GOA_EQ	0x74

> +#define MCS_GOA_CLK_GALLON 0x7C

> +#define MCS_GOA_FS_SEL0	0x7E

> +#define MCS_GOA_FS_SEL1	0x87

> +#define MCS_GOA_FS_SEL2	0x91

> +#define MCS_GOA_FS_SEL3	0x9B

> +#define MCS_GOA_BS_SEL0	0xAC

> +#define MCS_GOA_BS_SEL1	0xB5

> +#define MCS_GOA_BS_SEL2	0xBF

> +#define MCS_GOA_BS_SEL3	0xC9

> +#define MCS_GOA_BS_SEL4	0xD3

> +

> +/* CMD2 P3 commands (Gamma) */

> +#define MCS_GAMMA_VP	0x60 /* Gamma VP1~VP16 */

> +#define MCS_GAMMA_VN	0x70 /* Gamma VN1~VN16 */

> +

> +struct rm68200_panel_priv {

> +	struct udevice *reg;

> +	struct udevice *backlight;

> +	struct gpio_desc reset;

> +};

> +

> +static void rm68200_dcs_write_buf(struct udevice *dev, const void *data,

> +				  size_t len)

> +{

> +	struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);

> +	struct mipi_dsi_device *device = plat->device;

> +

> +	if (mipi_dsi_dcs_write_buffer(device, data, len) < 0)

> +		pr_err("mipi dsi dcs write buffer failed\n");


pr_err()

> +}

> +

> +static void rm68200_dcs_write_cmd(struct udevice *dev, u8 cmd, u8 value)

> +{

> +	struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);

> +	struct mipi_dsi_device *device = plat->device;

> +

> +	if (mipi_dsi_dcs_write(device, cmd, &value, 1) < 0)

> +		pr_err("mipi dsi dcs write failed\n");


ditto

> +}

> +

> +#define dcs_write_seq(ctx, seq...)				\

> +({								\

> +	static const u8 d[] = { seq };				\

> +	rm68200_dcs_write_buf(ctx, d, ARRAY_SIZE(d));		\

> +})

> +

> +/*

> + * This panel is not able to auto-increment all cmd addresses so for some of

> + * them, we need to send them one by one...

> + */

> +#define dcs_write_cmd_seq(ctx, cmd, seq...)			\

> +({								\

> +	static const u8 d[] = { seq };				\

> +	static int i;						\

> +	for (i = 0; i < ARRAY_SIZE(d) ; i++)			\

> +		rm68200_dcs_write_cmd(ctx, cmd + i, d[i]);	\

> +})

> +

> +static int rm68200_init_sequence(struct udevice *dev)

> +{

> +	/* Enter CMD2 with page 0 */

> +	dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD2_P0);

> +	dcs_write_cmd_seq(dev, MCS_EXT_PWR_IC, 0xC0, 0x53, 0x00);

> +	dcs_write_seq(dev, MCS_BT2CTR, 0xE5);

> +	dcs_write_seq(dev, MCS_SETAVDD, 0x0A);

> +	dcs_write_seq(dev, MCS_SETAVEE, 0x0A);

> +	dcs_write_seq(dev, MCS_SGOPCTR, 0x52);

> +	dcs_write_seq(dev, MCS_BT3CTR, 0x53);

> +	dcs_write_seq(dev, MCS_BT4CTR, 0x5A);

> +	dcs_write_seq(dev, MCS_INVCTR, 0x00);

> +	dcs_write_seq(dev, MCS_STBCTR, 0x0A);

> +	dcs_write_seq(dev, MCS_SDCTR, 0x06);

> +	dcs_write_seq(dev, MCS_VCMCTR, 0x56);

> +	dcs_write_seq(dev, MCS_SETVGN, 0xA0, 0x00);

> +	dcs_write_seq(dev, MCS_SETVGP, 0xA0, 0x00);

> +	dcs_write_seq(dev, MCS_SW_CTRL, 0x11); /* 2 data lanes, see doc */

> +

> +	dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD2_P2);

> +	dcs_write_seq(dev, GOA_VSTV1, 0x05);

> +	dcs_write_seq(dev, 0x02, 0x0B);

> +	dcs_write_seq(dev, 0x03, 0x0F);

> +	dcs_write_seq(dev, 0x04, 0x7D, 0x00, 0x50);

> +	dcs_write_cmd_seq(dev, GOA_VSTV2, 0x05, 0x16, 0x0D, 0x11, 0x7D, 0x00,

> +			  0x50);

> +	dcs_write_cmd_seq(dev, GOA_VCLK1, 0x07, 0x08, 0x01, 0x02, 0x00, 0x7D,

> +			  0x00, 0x85, 0x08);

> +	dcs_write_cmd_seq(dev, GOA_VCLK2, 0x03, 0x04, 0x05, 0x06, 0x00, 0x7D,

> +			  0x00, 0x85, 0x08);

> +	dcs_write_seq(dev, GOA_VCLK_OPT1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

> +		      0x00, 0x00, 0x00, 0x00);

> +	dcs_write_cmd_seq(dev, GOA_BICLK1, 0x07, 0x08);

> +	dcs_write_seq(dev, 0x2D, 0x01);

> +	dcs_write_seq(dev, 0x2F, 0x02, 0x00, 0x40, 0x05, 0x08, 0x54, 0x7D,

> +		      0x00);

> +	dcs_write_cmd_seq(dev, GOA_BICLK2, 0x03, 0x04, 0x05, 0x06, 0x00);

> +	dcs_write_seq(dev, 0x3D, 0x40);

> +	dcs_write_seq(dev, 0x3F, 0x05, 0x08, 0x54, 0x7D, 0x00);

> +	dcs_write_seq(dev, GOA_BICLK3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

> +		      0x00, 0x00, 0x00, 0x00, 0x00);

> +	dcs_write_seq(dev, GOA_BICLK4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

> +		      0x00, 0x00);

> +	dcs_write_seq(dev, 0x58, 0x00, 0x00, 0x00);

> +	dcs_write_seq(dev, GOA_BICLK_OPT1, 0x00, 0x00, 0x00, 0x00, 0x00);

> +	dcs_write_seq(dev, GOA_BICLK_OPT2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

> +		      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);

> +	dcs_write_seq(dev, MCS_GOA_GPO1, 0x00, 0x00, 0x00, 0x00);

> +	dcs_write_seq(dev, MCS_GOA_GPO2, 0x00, 0x20, 0x00);

> +	dcs_write_seq(dev, MCS_GOA_EQ, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,

> +		      0x00, 0x00);

> +	dcs_write_seq(dev, MCS_GOA_CLK_GALLON, 0x00, 0x00);

> +	dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL0, 0xBF, 0x02, 0x06, 0x14, 0x10,

> +			  0x16, 0x12, 0x08, 0x3F);

> +	dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL1, 0x3F, 0x3F, 0x3F, 0x3F, 0x0C,

> +			  0x0A, 0x0E, 0x3F, 0x3F, 0x00);

> +	dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL2, 0x04, 0x3F, 0x3F, 0x3F, 0x3F,

> +			  0x05, 0x01, 0x3F, 0x3F, 0x0F);

> +	dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL3, 0x0B, 0x0D, 0x3F, 0x3F, 0x3F,

> +			  0x3F);

> +	dcs_write_cmd_seq(dev, 0xA2, 0x3F, 0x09, 0x13, 0x17, 0x11, 0x15);

> +	dcs_write_cmd_seq(dev, 0xA9, 0x07, 0x03, 0x3F);

> +	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL0, 0x3F, 0x05, 0x01, 0x17, 0x13,

> +			  0x15, 0x11, 0x0F, 0x3F);

> +	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL1, 0x3F, 0x3F, 0x3F, 0x3F, 0x0B,

> +			  0x0D, 0x09, 0x3F, 0x3F, 0x07);

> +	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL2, 0x03, 0x3F, 0x3F, 0x3F, 0x3F,

> +			  0x02, 0x06, 0x3F, 0x3F, 0x08);

> +	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL3, 0x0C, 0x0A, 0x3F, 0x3F, 0x3F,

> +			  0x3F, 0x3F, 0x0E, 0x10, 0x14);

> +	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL4, 0x12, 0x16, 0x00, 0x04, 0x3F);

> +	dcs_write_seq(dev, 0xDC, 0x02);

> +	dcs_write_seq(dev, 0xDE, 0x12);

> +

> +	dcs_write_seq(dev, MCS_CMD_MODE_SW, 0x0E); /* No documentation */

> +	dcs_write_seq(dev, 0x01, 0x75);

> +

> +	dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD2_P3);

> +	dcs_write_cmd_seq(dev, MCS_GAMMA_VP, 0x00, 0x0C, 0x12, 0x0E, 0x06,

> +			  0x12, 0x0E, 0x0B, 0x15, 0x0B, 0x10, 0x07, 0x0F,

> +			  0x12, 0x0C, 0x00);

> +	dcs_write_cmd_seq(dev, MCS_GAMMA_VN, 0x00, 0x0C, 0x12, 0x0E, 0x06,

> +			  0x12, 0x0E, 0x0B, 0x15, 0x0B, 0x10, 0x07, 0x0F,

> +			  0x12, 0x0C, 0x00);

> +

> +	/* Exit CMD2 */

> +	dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD1_UCS);

> +

> +	return 0;

> +}

> +

> +static int rm68200_panel_enable_backlight(struct udevice *dev)

> +{

> +	struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);

> +	struct mipi_dsi_device *device = plat->device;

> +	struct rm68200_panel_priv *priv = dev_get_priv(dev);

> +	int ret;

> +

> +	device->lanes = 2;

> +	device->format = MIPI_DSI_FMT_RGB888;

> +	device->mode_flags = MIPI_DSI_MODE_VIDEO |

> +			     MIPI_DSI_MODE_VIDEO_BURST |

> +			     MIPI_DSI_MODE_LPM;

> +

> +	ret = mipi_dsi_attach(device);

> +	if (ret < 0)

> +		return ret;

> +

> +	pr_info("%s: initialize panel\n", __func__);


debug() ?

> +

> +	ret = rm68200_init_sequence(dev);

> +	if (ret)

> +		return ret;

> +

> +	ret = mipi_dsi_dcs_exit_sleep_mode(device);

> +	if (ret)

> +		return ret;

> +

> +	mdelay(125);

> +

> +	ret = mipi_dsi_dcs_set_display_on(device);

> +	if (ret)

> +		return ret;

> +

> +	mdelay(20);

> +

> +	pr_info("%s: start, backlight = '%s'\n", __func__,

> +		priv->backlight->name);

> +


debug() ?

> +	ret = backlight_enable(priv->backlight);

> +	if (ret)

> +		return ret;

> +

> +	return 0;

> +}

> +

> +static int rm68200_panel_ofdata_to_platdata(struct udevice *dev)

> +{

> +	struct rm68200_panel_priv *priv = dev_get_priv(dev);

> +	int ret;

> +

> +	if (IS_ENABLED(CONFIG_DM_REGULATOR)) {

> +		ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,

> +						   "power-supply", &priv->reg);

> +		if (ret) {

> +			pr_info("%s: Warning: cannot get power supply\n",

> +				__func__);


dev_info()

> +			if (ret != -ENOENT)

> +				return ret;

> +		}

> +	}

> +

> +	ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset,

> +				   GPIOD_IS_OUT);

> +	if (ret) {

> +		pr_info("%s: Warning: cannot get reset GPIO\n", __func__);


ditto

> +		if (ret != -ENOENT)

> +			return ret;

> +	}

> +

> +	/* reset panel must be done before probe */

> +	dm_gpio_set_value(&priv->reset, true);

> +

> +	return 0;

> +}

> +

> +static int rm68200_panel_probe(struct udevice *dev)

> +{

> +	struct rm68200_panel_priv *priv = dev_get_priv(dev);

> +	int ret;

> +

> +	if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) {

> +		pr_info("%s: Enable regulator '%s'\n", __func__,

> +			priv->reg->name);


debug() ?

> +		ret = regulator_set_enable(priv->reg, true);

> +		if (ret)

> +			return ret;

> +	}

> +

> +	dm_gpio_set_value(&priv->reset, false);

> +

> +	ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,

> +					   "backlight", &priv->backlight);

> +	if (ret) {

> +		pr_info("%s: Cannot get backlight: ret=%d\n", __func__, ret);


dev_err()

> +		return ret;

> +	}

> +

> +	return 0;

> +}

> +

> +static const struct panel_ops rm68200_panel_ops = {

> +	.enable_backlight = rm68200_panel_enable_backlight,

> +};

> +

> +static const struct udevice_id rm68200_panel_ids[] = {

> +	{ .compatible = "raydium,rm68200" },

> +	{ }

> +};

> +

> +U_BOOT_DRIVER(rm68200_panel) = {

> +	.name			  = "rm68200_panel",

> +	.id			  = UCLASS_PANEL,

> +	.of_match		  = rm68200_panel_ids,

> +	.ops			  = &rm68200_panel_ops,

> +	.ofdata_to_platdata	  = rm68200_panel_ofdata_to_platdata,

> +	.probe			  = rm68200_panel_probe,

> +	.platdata_auto_alloc_size = sizeof(struct mipi_dsi_panel_plat),

> +	.priv_auto_alloc_size	= sizeof(struct rm68200_panel_priv),

> +};

>
diff mbox

Patch

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 0f641d7..2561c59 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -328,6 +328,14 @@  config VIDEO_LCD_ORISETECH_OTM8009A
 	---help---
 	Support for Orise Tech otm8009a 480p dsi 2dl video mode panel.
 
+config VIDEO_LCD_RAYDIUM_RM68200
+	bool "RM68200 DSI LCD panel support"
+	depends on DM_VIDEO
+	select VIDEO_MIPI_DSI
+	default n
+	---help---
+	Support for Raydium rm68200 720x1280 dsi 2dl video mode panel.
+
 config VIDEO_LCD_SSD2828
 	bool "SSD2828 bridge chip"
 	default n
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 50be569..1a6c8d3 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -38,6 +38,7 @@  obj-$(CONFIG_VIDEO_DA8XX) += da8xx-fb.o videomodes.o
 obj-$(CONFIG_VIDEO_LCD_ANX9804) += anx9804.o
 obj-$(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM) += hitachi_tx18d42vm_lcd.o
 obj-$(CONFIG_VIDEO_LCD_ORISETECH_OTM8009A) += orisetech_otm8009a.o
+obj-$(CONFIG_VIDEO_LCD_RAYDIUM_RM68200) += raydium-rm68200.o
 obj-$(CONFIG_VIDEO_LCD_SSD2828) += ssd2828.o
 obj-$(CONFIG_VIDEO_MB862xx) += mb862xx.o videomodes.o
 obj-$(CONFIG_VIDEO_MX3) += mx3fb.o videomodes.o
diff --git a/drivers/video/raydium-rm68200.c b/drivers/video/raydium-rm68200.c
new file mode 100644
index 0000000..46afb58
--- /dev/null
+++ b/drivers/video/raydium-rm68200.c
@@ -0,0 +1,329 @@ 
+/*
+ * Copyright (C) 2018 STMicroelectronics - All Rights Reserved
+ * Author(s): Yannick Fertre <yannick.fertre@st.com> for STMicroelectronics.
+ *	      Philippe Cornu <philippe.cornu@st.com> for STMicroelectronics.
+ *
+ * This rm68200 panel driver is based on the panel driver from
+ * drivers/gpu/drm/panel/panel-raydium-rm68200.c (kernel linux)
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+#include <asm/gpio.h>
+#include <backlight.h>
+#include <common.h>
+#include <dm.h>
+#include <panel.h>
+#include <power/regulator.h>
+#include <mipi_display.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define DRV_NAME "raydium_rm68200"
+
+/*** Manufacturer Command Set ***/
+#define MCS_CMD_MODE_SW	0xFE /* CMD Mode Switch */
+#define MCS_CMD1_UCS	0x00 /* User Command Set (UCS = CMD1) */
+#define MCS_CMD2_P0	0x01 /* Manufacture Command Set Page0 (CMD2 P0) */
+#define MCS_CMD2_P1	0x02 /* Manufacture Command Set Page1 (CMD2 P1) */
+#define MCS_CMD2_P2	0x03 /* Manufacture Command Set Page2 (CMD2 P2) */
+#define MCS_CMD2_P3	0x04 /* Manufacture Command Set Page3 (CMD2 P3) */
+
+/* CMD2 P0 commands (Display Options and Power) */
+#define MCS_STBCTR	0x12 /* TE1 Output Setting Zig-Zag Connection */
+#define MCS_SGOPCTR	0x16 /* Source Bias Current */
+#define MCS_SDCTR	0x1A /* Source Output Delay Time */
+#define MCS_INVCTR	0x1B /* Inversion Type */
+#define MCS_EXT_PWR_IC	0x24 /* External PWR IC Control */
+#define MCS_SETAVDD	0x27 /* PFM Control for AVDD Output */
+#define MCS_SETAVEE	0x29 /* PFM Control for AVEE Output */
+#define MCS_BT2CTR	0x2B /* DDVDL Charge Pump Control */
+#define MCS_BT3CTR	0x2F /* VGH Charge Pump Control */
+#define MCS_BT4CTR	0x34 /* VGL Charge Pump Control */
+#define MCS_VCMCTR	0x46 /* VCOM Output Level Control */
+#define MCS_SETVGN	0x52 /* VG M/S N Control */
+#define MCS_SETVGP	0x54 /* VG M/S P Control */
+#define MCS_SW_CTRL	0x5F /* Interface Control for PFM and MIPI */
+
+/* CMD2 P2 commands (GOA Timing Control) - no description in datasheet */
+#define GOA_VSTV1	0x00
+#define GOA_VSTV2	0x07
+#define GOA_VCLK1	0x0E
+#define GOA_VCLK2	0x17
+#define GOA_VCLK_OPT1	0x20
+#define GOA_BICLK1	0x2A
+#define GOA_BICLK2	0x37
+#define GOA_BICLK3	0x44
+#define GOA_BICLK4	0x4F
+#define GOA_BICLK_OPT1	0x5B
+#define GOA_BICLK_OPT2	0x60
+#define MCS_GOA_GPO1	0x6D
+#define MCS_GOA_GPO2	0x71
+#define MCS_GOA_EQ	0x74
+#define MCS_GOA_CLK_GALLON 0x7C
+#define MCS_GOA_FS_SEL0	0x7E
+#define MCS_GOA_FS_SEL1	0x87
+#define MCS_GOA_FS_SEL2	0x91
+#define MCS_GOA_FS_SEL3	0x9B
+#define MCS_GOA_BS_SEL0	0xAC
+#define MCS_GOA_BS_SEL1	0xB5
+#define MCS_GOA_BS_SEL2	0xBF
+#define MCS_GOA_BS_SEL3	0xC9
+#define MCS_GOA_BS_SEL4	0xD3
+
+/* CMD2 P3 commands (Gamma) */
+#define MCS_GAMMA_VP	0x60 /* Gamma VP1~VP16 */
+#define MCS_GAMMA_VN	0x70 /* Gamma VN1~VN16 */
+
+struct rm68200_panel_priv {
+	struct udevice *reg;
+	struct udevice *backlight;
+	struct gpio_desc reset;
+};
+
+static void rm68200_dcs_write_buf(struct udevice *dev, const void *data,
+				  size_t len)
+{
+	struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
+	struct mipi_dsi_device *device = plat->device;
+
+	if (mipi_dsi_dcs_write_buffer(device, data, len) < 0)
+		pr_err("mipi dsi dcs write buffer failed\n");
+}
+
+static void rm68200_dcs_write_cmd(struct udevice *dev, u8 cmd, u8 value)
+{
+	struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
+	struct mipi_dsi_device *device = plat->device;
+
+	if (mipi_dsi_dcs_write(device, cmd, &value, 1) < 0)
+		pr_err("mipi dsi dcs write failed\n");
+}
+
+#define dcs_write_seq(ctx, seq...)				\
+({								\
+	static const u8 d[] = { seq };				\
+	rm68200_dcs_write_buf(ctx, d, ARRAY_SIZE(d));		\
+})
+
+/*
+ * This panel is not able to auto-increment all cmd addresses so for some of
+ * them, we need to send them one by one...
+ */
+#define dcs_write_cmd_seq(ctx, cmd, seq...)			\
+({								\
+	static const u8 d[] = { seq };				\
+	static int i;						\
+	for (i = 0; i < ARRAY_SIZE(d) ; i++)			\
+		rm68200_dcs_write_cmd(ctx, cmd + i, d[i]);	\
+})
+
+static int rm68200_init_sequence(struct udevice *dev)
+{
+	/* Enter CMD2 with page 0 */
+	dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD2_P0);
+	dcs_write_cmd_seq(dev, MCS_EXT_PWR_IC, 0xC0, 0x53, 0x00);
+	dcs_write_seq(dev, MCS_BT2CTR, 0xE5);
+	dcs_write_seq(dev, MCS_SETAVDD, 0x0A);
+	dcs_write_seq(dev, MCS_SETAVEE, 0x0A);
+	dcs_write_seq(dev, MCS_SGOPCTR, 0x52);
+	dcs_write_seq(dev, MCS_BT3CTR, 0x53);
+	dcs_write_seq(dev, MCS_BT4CTR, 0x5A);
+	dcs_write_seq(dev, MCS_INVCTR, 0x00);
+	dcs_write_seq(dev, MCS_STBCTR, 0x0A);
+	dcs_write_seq(dev, MCS_SDCTR, 0x06);
+	dcs_write_seq(dev, MCS_VCMCTR, 0x56);
+	dcs_write_seq(dev, MCS_SETVGN, 0xA0, 0x00);
+	dcs_write_seq(dev, MCS_SETVGP, 0xA0, 0x00);
+	dcs_write_seq(dev, MCS_SW_CTRL, 0x11); /* 2 data lanes, see doc */
+
+	dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD2_P2);
+	dcs_write_seq(dev, GOA_VSTV1, 0x05);
+	dcs_write_seq(dev, 0x02, 0x0B);
+	dcs_write_seq(dev, 0x03, 0x0F);
+	dcs_write_seq(dev, 0x04, 0x7D, 0x00, 0x50);
+	dcs_write_cmd_seq(dev, GOA_VSTV2, 0x05, 0x16, 0x0D, 0x11, 0x7D, 0x00,
+			  0x50);
+	dcs_write_cmd_seq(dev, GOA_VCLK1, 0x07, 0x08, 0x01, 0x02, 0x00, 0x7D,
+			  0x00, 0x85, 0x08);
+	dcs_write_cmd_seq(dev, GOA_VCLK2, 0x03, 0x04, 0x05, 0x06, 0x00, 0x7D,
+			  0x00, 0x85, 0x08);
+	dcs_write_seq(dev, GOA_VCLK_OPT1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		      0x00, 0x00, 0x00, 0x00);
+	dcs_write_cmd_seq(dev, GOA_BICLK1, 0x07, 0x08);
+	dcs_write_seq(dev, 0x2D, 0x01);
+	dcs_write_seq(dev, 0x2F, 0x02, 0x00, 0x40, 0x05, 0x08, 0x54, 0x7D,
+		      0x00);
+	dcs_write_cmd_seq(dev, GOA_BICLK2, 0x03, 0x04, 0x05, 0x06, 0x00);
+	dcs_write_seq(dev, 0x3D, 0x40);
+	dcs_write_seq(dev, 0x3F, 0x05, 0x08, 0x54, 0x7D, 0x00);
+	dcs_write_seq(dev, GOA_BICLK3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		      0x00, 0x00, 0x00, 0x00, 0x00);
+	dcs_write_seq(dev, GOA_BICLK4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		      0x00, 0x00);
+	dcs_write_seq(dev, 0x58, 0x00, 0x00, 0x00);
+	dcs_write_seq(dev, GOA_BICLK_OPT1, 0x00, 0x00, 0x00, 0x00, 0x00);
+	dcs_write_seq(dev, GOA_BICLK_OPT2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+	dcs_write_seq(dev, MCS_GOA_GPO1, 0x00, 0x00, 0x00, 0x00);
+	dcs_write_seq(dev, MCS_GOA_GPO2, 0x00, 0x20, 0x00);
+	dcs_write_seq(dev, MCS_GOA_EQ, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+		      0x00, 0x00);
+	dcs_write_seq(dev, MCS_GOA_CLK_GALLON, 0x00, 0x00);
+	dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL0, 0xBF, 0x02, 0x06, 0x14, 0x10,
+			  0x16, 0x12, 0x08, 0x3F);
+	dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL1, 0x3F, 0x3F, 0x3F, 0x3F, 0x0C,
+			  0x0A, 0x0E, 0x3F, 0x3F, 0x00);
+	dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL2, 0x04, 0x3F, 0x3F, 0x3F, 0x3F,
+			  0x05, 0x01, 0x3F, 0x3F, 0x0F);
+	dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL3, 0x0B, 0x0D, 0x3F, 0x3F, 0x3F,
+			  0x3F);
+	dcs_write_cmd_seq(dev, 0xA2, 0x3F, 0x09, 0x13, 0x17, 0x11, 0x15);
+	dcs_write_cmd_seq(dev, 0xA9, 0x07, 0x03, 0x3F);
+	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL0, 0x3F, 0x05, 0x01, 0x17, 0x13,
+			  0x15, 0x11, 0x0F, 0x3F);
+	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL1, 0x3F, 0x3F, 0x3F, 0x3F, 0x0B,
+			  0x0D, 0x09, 0x3F, 0x3F, 0x07);
+	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL2, 0x03, 0x3F, 0x3F, 0x3F, 0x3F,
+			  0x02, 0x06, 0x3F, 0x3F, 0x08);
+	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL3, 0x0C, 0x0A, 0x3F, 0x3F, 0x3F,
+			  0x3F, 0x3F, 0x0E, 0x10, 0x14);
+	dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL4, 0x12, 0x16, 0x00, 0x04, 0x3F);
+	dcs_write_seq(dev, 0xDC, 0x02);
+	dcs_write_seq(dev, 0xDE, 0x12);
+
+	dcs_write_seq(dev, MCS_CMD_MODE_SW, 0x0E); /* No documentation */
+	dcs_write_seq(dev, 0x01, 0x75);
+
+	dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD2_P3);
+	dcs_write_cmd_seq(dev, MCS_GAMMA_VP, 0x00, 0x0C, 0x12, 0x0E, 0x06,
+			  0x12, 0x0E, 0x0B, 0x15, 0x0B, 0x10, 0x07, 0x0F,
+			  0x12, 0x0C, 0x00);
+	dcs_write_cmd_seq(dev, MCS_GAMMA_VN, 0x00, 0x0C, 0x12, 0x0E, 0x06,
+			  0x12, 0x0E, 0x0B, 0x15, 0x0B, 0x10, 0x07, 0x0F,
+			  0x12, 0x0C, 0x00);
+
+	/* Exit CMD2 */
+	dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD1_UCS);
+
+	return 0;
+}
+
+static int rm68200_panel_enable_backlight(struct udevice *dev)
+{
+	struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
+	struct mipi_dsi_device *device = plat->device;
+	struct rm68200_panel_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	device->lanes = 2;
+	device->format = MIPI_DSI_FMT_RGB888;
+	device->mode_flags = MIPI_DSI_MODE_VIDEO |
+			     MIPI_DSI_MODE_VIDEO_BURST |
+			     MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_attach(device);
+	if (ret < 0)
+		return ret;
+
+	pr_info("%s: initialize panel\n", __func__);
+
+	ret = rm68200_init_sequence(dev);
+	if (ret)
+		return ret;
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(device);
+	if (ret)
+		return ret;
+
+	mdelay(125);
+
+	ret = mipi_dsi_dcs_set_display_on(device);
+	if (ret)
+		return ret;
+
+	mdelay(20);
+
+	pr_info("%s: start, backlight = '%s'\n", __func__,
+		priv->backlight->name);
+
+	ret = backlight_enable(priv->backlight);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int rm68200_panel_ofdata_to_platdata(struct udevice *dev)
+{
+	struct rm68200_panel_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	if (IS_ENABLED(CONFIG_DM_REGULATOR)) {
+		ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
+						   "power-supply", &priv->reg);
+		if (ret) {
+			pr_info("%s: Warning: cannot get power supply\n",
+				__func__);
+			if (ret != -ENOENT)
+				return ret;
+		}
+	}
+
+	ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset,
+				   GPIOD_IS_OUT);
+	if (ret) {
+		pr_info("%s: Warning: cannot get reset GPIO\n", __func__);
+		if (ret != -ENOENT)
+			return ret;
+	}
+
+	/* reset panel must be done before probe */
+	dm_gpio_set_value(&priv->reset, true);
+
+	return 0;
+}
+
+static int rm68200_panel_probe(struct udevice *dev)
+{
+	struct rm68200_panel_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) {
+		pr_info("%s: Enable regulator '%s'\n", __func__,
+			priv->reg->name);
+		ret = regulator_set_enable(priv->reg, true);
+		if (ret)
+			return ret;
+	}
+
+	dm_gpio_set_value(&priv->reset, false);
+
+	ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
+					   "backlight", &priv->backlight);
+	if (ret) {
+		pr_info("%s: Cannot get backlight: ret=%d\n", __func__, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct panel_ops rm68200_panel_ops = {
+	.enable_backlight = rm68200_panel_enable_backlight,
+};
+
+static const struct udevice_id rm68200_panel_ids[] = {
+	{ .compatible = "raydium,rm68200" },
+	{ }
+};
+
+U_BOOT_DRIVER(rm68200_panel) = {
+	.name			  = "rm68200_panel",
+	.id			  = UCLASS_PANEL,
+	.of_match		  = rm68200_panel_ids,
+	.ops			  = &rm68200_panel_ops,
+	.ofdata_to_platdata	  = rm68200_panel_ofdata_to_platdata,
+	.probe			  = rm68200_panel_probe,
+	.platdata_auto_alloc_size = sizeof(struct mipi_dsi_panel_plat),
+	.priv_auto_alloc_size	= sizeof(struct rm68200_panel_priv),
+};