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

Dario Binacchi
2024-09-13T10:00:20Z

From: Michael Trimarchi <michael@amarulasolutions.com>

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

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