From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

From: Icenowy Zheng <icenowy@aosc.io>

Date: Mon, 16 Mar 2020 21:35:01 +0800

Subject: [PATCH] drm: panel: add Xingbangda XBD599 panel

Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI IPS LCD panel made by

Xingbangda, which is used on PinePhone final assembled phones.

Add support for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>

---

 drivers/gpu/drm/panel/Kconfig                 |   9 +

 drivers/gpu/drm/panel/Makefile                |   1 +

 .../gpu/drm/panel/panel-xingbangda-xbd599.c   | 366 ++++++++++++++++++

 3 files changed, 376 insertions(+)

 create mode 100644 drivers/gpu/drm/panel/panel-xingbangda-xbd599.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig

index de2f2a452be5..3ce658de416b 100644

--- a/drivers/gpu/drm/panel/Kconfig

+++ b/drivers/gpu/drm/panel/Kconfig

@@ -462,6 +462,15 @@ config DRM_PANEL_VISIONOX_RM69299

 	  Say Y here if you want to enable support for Visionox

 	  RM69299  DSI Video Mode panel.

+config DRM_PANEL_XINGBANGDA_XBD599

+	tristate "Xingbangda XBD599 panel"

+	depends on OF

+	depends on DRM_MIPI_DSI

+	depends on BACKLIGHT_CLASS_DEVICE

+	help

+	  Say Y here if you want to enable support for the Xingbangda XBD599

+	  MIPI DSI Video Mode panel.

+

 config DRM_PANEL_XINPENG_XPP055C272

 	tristate "Xinpeng XPP055C272 panel driver"

 	depends on OF

diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile

index e45ceac6286f..bd10617430ec 100644

--- a/drivers/gpu/drm/panel/Makefile

+++ b/drivers/gpu/drm/panel/Makefile

@@ -49,4 +49,5 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o

 obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o

 obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o

 obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o

+obj-$(CONFIG_DRM_PANEL_XINGBANGDA_XBD599) += panel-xingbangda-xbd599.o

 obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o

diff --git a/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c b/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c

new file mode 100644

index 000000000000..b483f96ee1db

--- /dev/null

+++ b/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c

@@ -0,0 +1,366 @@

+// SPDX-License-Identifier: GPL-2.0

+/*

+ * Xingbangda XBD599 MIPI-DSI panel driver

+ *

+ * Copyright (C) 2019-2020 Icenowy Zheng <icenowy@aosc.io>

+ *

+ * Based on panel-rocktech-jh057n00900.c, which is:

+ *   Copyright (C) Purism SPC 2019

+ */

+

+#include <linux/delay.h>

+#include <linux/gpio/consumer.h>

+#include <linux/mod_devicetable.h>

+#include <linux/module.h>

+#include <linux/of_device.h>

+#include <linux/regulator/consumer.h>

+

+#include <drm/drm_mipi_dsi.h>

+#include <drm/drm_modes.h>

+#include <drm/drm_panel.h>

+#include <drm/drm_print.h>

+

+/* Manufacturer specific Commands send via DSI */

+#define ST7703_CMD_ALL_PIXEL_OFF 0x22

+#define ST7703_CMD_ALL_PIXEL_ON	 0x23

+#define ST7703_CMD_SETDISP	 0xB2

+#define ST7703_CMD_SETRGBIF	 0xB3

+#define ST7703_CMD_SETCYC	 0xB4

+#define ST7703_CMD_SETBGP	 0xB5

+#define ST7703_CMD_SETVCOM	 0xB6

+#define ST7703_CMD_SETOTP	 0xB7

+#define ST7703_CMD_SETPOWER_EXT	 0xB8

+#define ST7703_CMD_SETEXTC	 0xB9

+#define ST7703_CMD_SETMIPI	 0xBA

+#define ST7703_CMD_SETVDC	 0xBC

+#define ST7703_CMD_SETSCR	 0xC0

+#define ST7703_CMD_SETPOWER	 0xC1

+#define ST7703_CMD_UNK_C6	 0xC6

+#define ST7703_CMD_SETPANEL	 0xCC

+#define ST7703_CMD_SETGAMMA	 0xE0

+#define ST7703_CMD_SETEQ	 0xE3

+#define ST7703_CMD_SETGIP1	 0xE9

+#define ST7703_CMD_SETGIP2	 0xEA

+

+static const char * const regulator_names[] = {

+	"iovcc",

+	"vcc",

+};

+

+struct xbd599 {

+	struct device *dev;

+	struct drm_panel panel;

+	struct gpio_desc *reset_gpio;

+	struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)];

+	bool prepared;

+};

+

+static inline struct xbd599 *panel_to_xbd599(struct drm_panel *panel)

+{

+	return container_of(panel, struct xbd599, panel);

+}

+

+#define dsi_dcs_write_seq(dsi, cmd, seq...) do {			\

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

+		int ret;						\

+		ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d));	\

+		if (ret < 0)						\

+			return ret;					\

+	} while (0)

+

+static int xbd599_init_sequence(struct xbd599 *ctx)

+{

+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);

+	struct device *dev = ctx->dev;

+	int ret;

+

+	/*

+	 * Init sequence was supplied by the panel vendor.

+	 */

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC,

+			  0xF1, 0x12, 0x83);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI,

+			  0x33, 0x81, 0x05, 0xF9, 0x0E, 0x0E, 0x20, 0x00,

+			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25,

+			  0x00, 0x91, 0x0a, 0x00, 0x00, 0x02, 0x4F, 0x11,

+			  0x00, 0x00, 0x37);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT,

+			  0x25, 0x22, 0x20, 0x03);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF,

+			  0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00,

+			  0x00, 0x00);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR,

+			  0x73, 0x73, 0x50, 0x50, 0x00, 0xC0, 0x08, 0x70,

+			  0x00);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0xF0);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ,

+			  0x00, 0x00, 0x0B, 0x0B, 0x10, 0x10, 0x00, 0x00,

+			  0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10);

+	dsi_dcs_write_seq(dsi, 0xC6, 0x01, 0x00, 0xFF, 0xFF, 0x00);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER,

+			  0x74, 0x00, 0x32, 0x32, 0x77, 0xF1, 0xFF, 0xFF,

+			  0xCC, 0xCC, 0x77, 0x77);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x07, 0x07);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x2C, 0x2C);

+	dsi_dcs_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00);

+

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1,

+			  0x82, 0x10, 0x06, 0x05, 0xA2, 0x0A, 0xA5, 0x12,

+			  0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,

+			  0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00,

+			  0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88,

+			  0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64,

+			  0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,

+			  0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

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

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2,

+			  0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

+			  0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88,

+			  0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13,

+			  0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,

+			  0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00,

+			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

+			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0A,

+			  0xA5, 0x00, 0x00, 0x00, 0x00);

+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA,

+			  0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, 0x35,

+			  0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, 0x12,

+			  0x18, 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41,

+			  0x35, 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12,

+			  0x12, 0x18);

+	msleep(20);

+

+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);

+	if (ret < 0) {

+		DRM_DEV_ERROR(dev, "Failed to exit sleep mode\n");

+		return ret;

+	}

+	msleep(250);

+

+	ret = mipi_dsi_dcs_set_display_on(dsi);

+	if (ret)

+		return ret;

+	msleep(50);

+

+	DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");

+	return 0;

+}

+

+static int xbd599_prepare(struct drm_panel *panel)

+{

+	struct xbd599 *ctx = panel_to_xbd599(panel);

+	int ret;

+

+	if (ctx->prepared)

+		return 0;

+

+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);

+	if (ret)

+		return ret;

+

+	DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");

+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);

+	usleep_range(20, 40);

+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);

+	msleep(20);

+

+	ctx->prepared = true;

+

+	return 0;

+}

+

+static int xbd599_enable(struct drm_panel *panel)

+{

+	struct xbd599 *ctx = panel_to_xbd599(panel);

+	int ret;

+

+	ret = xbd599_init_sequence(ctx);

+	if (ret < 0) {

+		DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",

+			      ret);

+		return ret;

+	}

+

+	return 0;

+}

+

+static int xbd599_disable(struct drm_panel *panel)

+{

+	struct xbd599 *ctx = panel_to_xbd599(panel);

+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);

+

+	return mipi_dsi_dcs_set_display_off(dsi);

+}

+

+static int xbd599_unprepare(struct drm_panel *panel)

+{

+	struct xbd599 *ctx = panel_to_xbd599(panel);

+

+	if (!ctx->prepared)

+		return 0;

+

+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);

+	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);

+	ctx->prepared = false;

+

+	return 0;

+}

+

+static const struct drm_display_mode xbd599_default_mode = {

+	.hdisplay    = 720,

+	.hsync_start = 720 + 40,

+	.hsync_end   = 720 + 40 + 40,

+	.htotal	     = 720 + 40 + 40 + 40,

+	.vdisplay    = 1440,

+	.vsync_start = 1440 + 18,

+	.vsync_end   = 1440 + 18 + 10,

+	.vtotal	     = 1440 + 18 + 10 + 17,

+	.vrefresh    = 60,

+	.clock	     = 69000,

+	.flags	     = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,

+

+	.width_mm    = 68,

+	.height_mm   = 136,

+	.type        = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,

+};

+

+static int xbd599_get_modes(struct drm_panel *panel,

+			    struct drm_connector *connector)

+{

+	struct xbd599 *ctx = panel_to_xbd599(panel);

+	struct drm_display_mode *mode;

+

+	mode = drm_mode_duplicate(connector->dev, &xbd599_default_mode);

+	if (!mode) {

+		DRM_DEV_ERROR(ctx->dev, "Failed to add mode\n");

+		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 xbd599_drm_funcs = {

+	.prepare   = xbd599_prepare,

+	.enable    = xbd599_enable,

+	.disable   = xbd599_disable,

+	.unprepare = xbd599_unprepare,

+	.get_modes = xbd599_get_modes,

+};

+

+static int xbd599_probe(struct mipi_dsi_device *dsi)

+{

+	struct device *dev = &dsi->dev;

+	struct xbd599 *ctx;

+	int i, ret;

+

+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);

+	if (!ctx)

+		return -ENOMEM;

+

+	for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++)

+		ctx->supplies[i].supply = regulator_names[i];

+

+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),

+				      ctx->supplies);

+	if (ret < 0) {

+		DRM_DEV_ERROR(&dsi->dev, "cannot get regulators\n");

+		return ret;

+	}

+

+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);

+	if (IS_ERR(ctx->reset_gpio)) {

+		DRM_DEV_ERROR(dev, "cannot get reset gpio\n");

+		return PTR_ERR(ctx->reset_gpio);

+	}

+

+	mipi_dsi_set_drvdata(dsi, ctx);

+

+	ctx->dev = dev;

+

+	dsi->lanes = 4;

+	dsi->format = MIPI_DSI_FMT_RGB888;

+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;

+

+	drm_panel_init(&ctx->panel, &dsi->dev, &xbd599_drm_funcs,

+		       DRM_MODE_CONNECTOR_DSI);

+

+	ret = drm_panel_of_backlight(&ctx->panel);

+	if (ret)

+		return ret;

+

+	drm_panel_add(&ctx->panel);

+

+	ret = mipi_dsi_attach(dsi);

+	if (ret < 0) {

+		DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?\n");

+		drm_panel_remove(&ctx->panel);

+		return ret;

+	}

+

+	DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",

+		     xbd599_default_mode.hdisplay,

+		     xbd599_default_mode.vdisplay,

+		     xbd599_default_mode.vrefresh,

+		     mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);

+

+	return 0;

+}

+

+static void xbd599_shutdown(struct mipi_dsi_device *dsi)

+{

+	struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi);

+	int ret;

+

+	ret = drm_panel_unprepare(&ctx->panel);

+	if (ret < 0)

+		DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",

+			      ret);

+}

+

+static int xbd599_remove(struct mipi_dsi_device *dsi)

+{

+	struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi);

+	int ret;

+

+	xbd599_shutdown(dsi);

+

+	ret = mipi_dsi_detach(dsi);

+	if (ret < 0)

+		DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",

+			      ret);

+

+	drm_panel_remove(&ctx->panel);

+

+	return 0;

+}

+

+static const struct of_device_id xbd599_of_match[] = {

+	{ .compatible = "xingbangda,xbd599", },

+	{ /* sentinel */ }

+};

+MODULE_DEVICE_TABLE(of, xbd599_of_match);

+

+static struct mipi_dsi_driver xbd599_driver = {

+	.probe	= xbd599_probe,

+	.remove = xbd599_remove,

+	.shutdown = xbd599_shutdown,

+	.driver = {

+		.name = "panel-xingbangda-xbd599",

+		.of_match_table = xbd599_of_match,

+	},

+};

+module_mipi_dsi_driver(xbd599_driver);

+

+MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>");

+MODULE_DESCRIPTION("DRM driver for Xingbangda XBD599 MIPI DSI panel");

+MODULE_LICENSE("GPL v2");

-- 

2.28.0