Signed-off-by: WeiHao Li <ie...@outlook.com>
---
drivers/video/Kconfig | 7 ++
drivers/video/Makefile | 1 +
drivers/video/rm72014.c | 199 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 207 insertions(+)
create mode 100644 drivers/video/rm72014.c
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index dfe4b3b8a0..7e2a001082 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -596,6 +596,13 @@ config VIDEO_LCD_RAYDIUM_RM68200
Say Y here if you want to enable support for Raydium RM68200
720x1280 DSI video mode panel.
+config VIDEO_LCD_RM72014
+ bool "RM72014 DSI LCD panel support"
+ select VIDEO_MIPI_DSI
+ help
+ Say Y here if you want to enable support for unknown RM72014
+ 800x1280 DSI video mode panel.
+
config VIDEO_LCD_RENESAS_R61307
tristate "Renesas R61307 DSI video mode panel"
depends on PANEL && BACKLIGHT
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index ebe4a3961f..06ba4cfdcb 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -67,6 +67,7 @@ obj-$(CONFIG_VIDEO_LCD_MOT) += mot-panel.o
obj-$(CONFIG_VIDEO_LCD_NOVATEK_NT35510) += novatek-nt35510.o
obj-$(CONFIG_VIDEO_LCD_ORISETECH_OTM8009A) += orisetech_otm8009a.o
obj-$(CONFIG_VIDEO_LCD_RAYDIUM_RM68200) += raydium-rm68200.o
+obj-$(CONFIG_VIDEO_LCD_RM72014) += rm72014.o
obj-$(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
diff --git a/drivers/video/rm72014.c b/drivers/video/rm72014.c
new file mode 100644
index 0000000000..d13583cfbc
--- /dev/null
+++ b/drivers/video/rm72014.c
@@ -0,0 +1,199 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Ondrej Jirman <m...@xff.cz>
+ */
+#include <backlight.h>
+#include <dm.h>
+#include <mipi_dsi.h>
+#include <panel.h>
+#include <asm/gpio.h>
+#include <dm/device_compat.h>
+#include <linux/delay.h>
+#include <power/regulator.h>
+
+struct rm72014_panel_priv {
+ struct udevice *reg;
+ struct gpio_desc reset;
+ struct udevice *backlight;
+};
+
+static const struct display_timing default_timing = {
+ .pixelclock.typ = 80000000,
+ .hactive.typ = 800,
+ .hfront_porch.typ = 210,
+ .hback_porch.typ = 18,
+ .hsync_len.typ = 18,
+ .vactive.typ = 1280,
+ .vfront_porch.typ = 8,
+ .vback_porch.typ = 6,
+ .vsync_len.typ = 6,
+ .flags = DISPLAY_FLAGS_VSYNC_LOW |
DISPLAY_FLAGS_HSYNC_LOW,
+};
+
+#define dsi_dcs_write_seq(device, seq...) do {
\
+ static const u8 d[] = { seq };
\
+ int ret;
\
+ ret = mipi_dsi_dcs_write_buffer(device, d, ARRAY_SIZE(d));
\
+ if (ret < 0)
\
+ return ret;
\
+ } while (0)
+
+static int rm72014_init_sequence(struct udevice *dev)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+ struct mipi_dsi_device *device = plat->device;
+ int ret;
+
+ dsi_dcs_write_seq(device, 0x53, 0x24);
+ dsi_dcs_write_seq(device, 0xf0, 0x5a, 0x5a);
+ mdelay(30);
+ dsi_dcs_write_seq(device, 0x11);
+ mdelay(120);
+ dsi_dcs_write_seq(device, 0x29);
+ mdelay(30);
+ dsi_dcs_write_seq(device, 0xc3, 0x40, 0x00, 0x28);
+ dsi_dcs_write_seq(device, 0x50, 0x77);
+ dsi_dcs_write_seq(device, 0xe1, 0x66);
+ dsi_dcs_write_seq(device, 0xdc, 0x67);
+ dsi_dcs_write_seq(device, 0xd3, 0xc8);
+ dsi_dcs_write_seq(device, 0x50, 0x00);
+ dsi_dcs_write_seq(device, 0xf0, 0x5a);
+ dsi_dcs_write_seq(device, 0xf5, 0x80);
+ mdelay(120);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(device);
+ if (ret)
+ return ret;
+
+ /* Panel is operational 120 msec after reset */
+ mdelay(120);
+
+ ret = mipi_dsi_dcs_set_display_on(device);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int rm72014_panel_enable_backlight(struct udevice *dev)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+ struct mipi_dsi_device *device = plat->device;
+ struct rm72014_panel_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = mipi_dsi_attach(device);
+ if (ret < 0) {
+ printf("mipi_dsi_attach failed %d\n", ret);
+ return ret;
+ }
+
+ ret = rm72014_init_sequence(dev);
+ if (ret) {
+ printf("rm72014_init_sequence failed %d\n", ret);
+ return ret;
+ }
+
+ if (priv->backlight) {
+ ret = backlight_enable(priv->backlight);
+ if (ret) {
+ printf("backlight enabled failed %d\n", ret);
+ return ret;
+ }
+
+ backlight_set_brightness(priv->backlight, 60);
+ }
+
+ mdelay(10);
+
+ return 0;
+}
+
+static int rm72014_panel_get_display_timing(struct udevice *dev,
+ struct display_timing *timings)
+{
+ memcpy(timings, &default_timing, sizeof(*timings));
+
+ return 0;
+}
+
+static int rm72014_panel_of_to_plat(struct udevice *dev)
+{
+ struct rm72014_panel_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ if (CONFIG_IS_ENABLED(DM_REGULATOR)) {
+ ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
+ "power-supply", &priv->reg);
+ if (ret) {
+ debug("%s: Warning: cannot get power supply: ret=%d\n",
+ __func__, ret);
+ if (ret != -ENOENT)
+ return ret;
+ }
+ }
+
+ ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
+ "backlight", &priv->backlight);
+ if (ret)
+ dev_warn(dev, "failed to get backlight\n");
+
+ ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset,
+ GPIOD_IS_OUT);
+ if (ret) {
+ dev_err(dev, "warning: cannot get reset GPIO (%d)\n", ret);
+ if (ret != -ENOENT)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int rm72014_panel_probe(struct udevice *dev)
+{
+ struct rm72014_panel_priv *priv = dev_get_priv(dev);
+ struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+ int ret;
+
+ ret = regulator_set_enable_if_allowed(priv->reg, true);
+ if (ret && ret != -ENOSYS) {
+ debug("%s: failed to enable regulator '%s' %d\n",
+ __func__, priv->reg->name, ret);
+ return ret;
+ }
+
+ dm_gpio_set_value(&priv->reset, 0);
+ mdelay(5);
+ dm_gpio_set_value(&priv->reset, 1);
+
+ mdelay(180);
+
+ /* fill characteristics of DSI data link */
+ plat->lanes = 4;
+ plat->format = MIPI_DSI_FMT_RGB888;
+ plat->mode_flags = MIPI_DSI_MODE_VIDEO |
+ MIPI_DSI_MODE_VIDEO_BURST;
+
+ return 0;
+}
+
+static const struct panel_ops rm72014_panel_ops = {
+ .enable_backlight = rm72014_panel_enable_backlight,
+ .get_display_timing = rm72014_panel_get_display_timing,
+};
+
+static const struct udevice_id rm72014_panel_ids[] = {
+ { .compatible = "unknown,rm72014" },
+ { }
+};
+
+U_BOOT_DRIVER(rm72014_panel) = {
+ .name = "rm72014_panel",
+ .id = UCLASS_PANEL,
+ .of_match = rm72014_panel_ids,
+ .ops = &rm72014_panel_ops,
+ .of_to_plat = rm72014_panel_of_to_plat,
+ .probe = rm72014_panel_probe,
+ .plat_auto = sizeof(struct mipi_dsi_panel_plat),
+ .priv_auto = sizeof(struct rm72014_panel_priv),
+};
--
2.39.5
