[PATCH 19/26] video: Add Synaptics R63353 panel driver

Dario Binacchi dario.binacchi at amarulasolutions.com
Fri Sep 13 11:56:01 CEST 2024


From: Michael Trimarchi <michael at amarulasolutions.com>

The LS068B3SX02 panel is based on the Synaptics R63353 Controller.
Add a driver for it.

Signed-off-by: Michael Trimarchi <michael at amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi at amarulasolutions.com>
---

 drivers/video/Kconfig            |   8 ++
 drivers/video/Makefile           |   1 +
 drivers/video/synaptics-r63353.c | 228 +++++++++++++++++++++++++++++++
 3 files changed, 237 insertions(+)
 create mode 100644 drivers/video/synaptics-r63353.c

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index cafdc15f9fe2..520577976571 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -627,6 +627,14 @@ config VIDEO_LCD_SSD2828_RESET
 	The reset pin of SSD2828 chip. This takes a string in the format
 	understood by 'sunxi_name_to_gpio' function, e.g. PH1 for pin 1 of port H.
 
+config VIDEO_LCD_SYNAPTICS_R63353
+	tristate "Synaptics R63353-based DSI LCD panels support"
+	select VIDEO_MIPI_DSI
+	default n
+	help
+	  Say Y if you want to enable support for panels based on the
+	  Synaptics R63353 controller.
+
 config VIDEO_LCD_TDO_TL070WSH30
 	bool "TDO TL070WSH30 DSI LCD panel support"
 	select VIDEO_MIPI_DSI
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 9fd3645994f1..4d836efcfa41 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -66,6 +66,7 @@ obj-$(CONFIG_VIDEO_LCD_RENESAS_R61307) += renesas-r61307.o
 obj-$(CONFIG_VIDEO_LCD_RENESAS_R69328) += renesas-r69328.o
 obj-$(CONFIG_VIDEO_LCD_SAMSUNG_LTL106HL02) += samsung-ltl106hl02.o
 obj-$(CONFIG_VIDEO_LCD_SSD2828) += ssd2828.o
+obj-$(CONFIG_VIDEO_LCD_SYNAPTICS_R63353) += synaptics-r63353.o
 obj-$(CONFIG_VIDEO_LCD_TDO_TL070WSH30) += tdo-tl070wsh30.o
 obj-$(CONFIG_VIDEO_MCDE_SIMPLE) += mcde_simple.o
 obj-${CONFIG_VIDEO_MESON} += meson/
diff --git a/drivers/video/synaptics-r63353.c b/drivers/video/synaptics-r63353.c
new file mode 100644
index 000000000000..86d2aea346b2
--- /dev/null
+++ b/drivers/video/synaptics-r63353.c
@@ -0,0 +1,228 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Synaptics R63353 Controller driver
+ *
+ * Copyright (C) 2020 BSH Hausgerate GmbH
+ */
+
+#include <backlight.h>
+#include <dm.h>
+#include <dm/device_compat.h>
+#include <mipi_dsi.h>
+#include <panel.h>
+#include <asm/gpio.h>
+#include <linux/delay.h>
+#include <power/regulator.h>
+
+#define R63353_INSTR(...) { \
+		.len = ARRAY_SIZE(((u8[]) {__VA_ARGS__})), \
+		.data = (const u8 *)&(const u8 []){__VA_ARGS__} \
+	}
+
+struct r63353_instr {
+	size_t len;
+	const u8 * const data;
+};
+
+static const struct r63353_instr init_sequence[] = {
+	R63353_INSTR(0x51, 0xff),
+	R63353_INSTR(0x53, 0x0c),
+	R63353_INSTR(0x55, 0x00),
+	R63353_INSTR(0x84, 0x00),
+	R63353_INSTR(0x29),
+	R63353_INSTR(0x11),
+};
+
+struct r63353_panel_priv {
+	struct udevice *dvdd;
+	struct udevice *avdd;
+	struct udevice *backlight;
+	struct gpio_desc reset_gpio;
+};
+
+static const struct display_timing default_timing = {
+	.pixelclock.typ		= 70000000,
+	.hactive.typ		= 640,
+	.hfront_porch.typ	= 35,
+	.hsync_len.typ		= 2,
+	.hback_porch.typ	= 150,
+	.vactive.typ		= 1280,
+	.vfront_porch.typ	= 2,
+	.vsync_len.typ		= 4,
+	.vback_porch.typ	= 1,
+	.flags = DISPLAY_FLAGS_DE_LOW,
+};
+
+static int r63353_panel_enable_backlight(struct udevice *dev)
+{
+	struct r63353_panel_priv *priv = dev_get_priv(dev);
+	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+	struct mipi_dsi_device *dsi = plat->device;
+	int i, ret;
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0)
+		return ret;
+
+	ret = mipi_dsi_dcs_soft_reset(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to do Software Reset (%d)\n", ret);
+		goto fail;
+	}
+
+	mdelay(20);
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
+		goto fail;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(init_sequence); i++) {
+		const struct r63353_instr *instr = &init_sequence[i];
+
+		ret = mipi_dsi_dcs_write_buffer(dsi, instr->data, instr->len);
+		if (ret < 0)
+			goto fail;
+	}
+
+	mdelay(120);
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to exit sleep mode (%d)\n", ret);
+		goto fail;
+	}
+
+	mdelay(10);
+
+	/* This call starts sending the data on the display (LINUX LOGO) */
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display ON (%d)\n", ret);
+		goto fail;
+	}
+
+	ret = backlight_enable(priv->backlight);
+	if (ret)
+		return ret;
+
+	return 0;
+
+fail:
+	dm_gpio_set_value(&priv->reset_gpio, 0);
+
+	return ret;
+}
+
+static int r63353_panel_get_display_timing(struct udevice *dev,
+					   struct display_timing *timing)
+{
+	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+	struct mipi_dsi_device *device = plat->device;
+
+	memcpy(timing, &default_timing, sizeof(*timing));
+
+	/* fill characteristics of DSI data link */
+	if (device) {
+		device->lanes = plat->lanes;
+		device->format = plat->format;
+		device->mode_flags = plat->mode_flags;
+	}
+
+	return 0;
+}
+
+static int r63353_panel_of_to_plat(struct udevice *dev)
+{
+	struct r63353_panel_priv *priv = dev_get_priv(dev);
+	int ret;
+
+	ret = device_get_supply_regulator(dev, "dvdd-supply", &priv->dvdd);
+	if (ret) {
+		dev_err(dev, "failed to get power dvdd supply\n");
+		return ret;
+	}
+
+	ret = device_get_supply_regulator(dev, "avdd-supply", &priv->avdd);
+	if (ret) {
+		dev_err(dev, "failed to get power avdd supply\n");
+		return ret;
+	}
+
+	ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset_gpio,
+				   GPIOD_IS_OUT);
+	if (ret) {
+		dev_err(dev, "failed to get RESET GPIO\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int r63353_panel_probe(struct udevice *dev)
+{
+	struct r63353_panel_priv *priv = dev_get_priv(dev);
+	struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+	int ret;
+
+	ret = regulator_set_enable(priv->avdd, true);
+	if (ret) {
+		dev_err(dev, "Failed to enable avdd regulator (%d)\n", ret);
+		return ret;
+	}
+
+	mdelay(25);
+
+	ret = regulator_set_enable(priv->dvdd, true);
+	if (ret) {
+		dev_err(dev, "Failed to enable dvdd regulator (%d)\n", ret);
+		regulator_set_enable(priv->avdd, false);
+		return ret;
+	}
+
+	dm_gpio_set_value(&priv->reset_gpio, 0);
+	mdelay(10);
+	dm_gpio_set_value(&priv->reset_gpio, 1);
+	mdelay(120);
+
+	/* fill characteristics of DSI data link */
+	plat->lanes = 2;
+	plat->format = MIPI_DSI_FMT_RGB888;
+	plat->mode_flags = MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
+		MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM |
+		MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_EOT_PACKET;
+
+	ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
+					   "backlight", &priv->backlight);
+	if (ret) {
+		dev_err(dev, "%s: Warning: cannot get backlight: ret=%d\n",
+			__func__, ret);
+		if (ret != -ENOENT)
+			return ret;
+	}
+
+	return 0;
+}
+
+static const struct panel_ops r63353_panel_ops = {
+	.enable_backlight = r63353_panel_enable_backlight,
+	.get_display_timing = r63353_panel_get_display_timing,
+};
+
+static const struct udevice_id r63353_panel_ids[] = {
+	{ .compatible = "syna,r63353" },
+	{ .compatible = "sharp,ls068b3sx02" },
+	{ } /* sentinel */
+};
+
+U_BOOT_DRIVER(r63353_panel) = {
+	.name = "r63353_panel",
+	.id = UCLASS_PANEL,
+	.of_match = r63353_panel_ids,
+	.ops = &r63353_panel_ops,
+	.of_to_plat = r63353_panel_of_to_plat,
+	.probe = r63353_panel_probe,
+	.plat_auto = sizeof(struct mipi_dsi_panel_plat),
+	.priv_auto = sizeof(struct r63353_panel_priv),
+};
-- 
2.43.0



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