video: panel: add Motorola Atrix 4G and Droid X2 panel
Add support for the LCD panel module used in Motorola Atrix 4G or Droid X2.
Exact panel vendor and model are unknown. The panel has a 540x960 (qHD)
resolution and uses 24 bit RGB per pixel.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index d343dfb..6c323be 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -529,6 +529,16 @@
Say Y here if you want to enable support for Himax HX8394
dsi 4dl panel.
+config VIDEO_LCD_MOT
+ tristate "Atrix 4G and Droid X2 540x960 DSI video mode panel"
+ depends on PANEL && BACKLIGHT
+ select VIDEO_MIPI_DSI
+ help
+ Say Y here if you want to enable support for the LCD panel module for
+ Motorola Atrix 4G or Droid X2. Exact panel vendor and model are
+ unknown. The panel has a 540x960 resolution and uses 24 bit RGB per
+ pixel.
+
config VIDEO_LCD_ORISETECH_OTM8009A
bool "OTM8009A DSI LCD panel support"
select VIDEO_MIPI_DSI
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 74df571..2145afa 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -59,6 +59,7 @@
obj-$(CONFIG_VIDEO_LCD_HIMAX_HX8394) += himax-hx8394.o
obj-$(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM) += hitachi_tx18d42vm_lcd.o
obj-$(CONFIG_VIDEO_LCD_LG_LD070WX3) += lg-ld070wx3.o
+obj-$(CONFIG_VIDEO_LCD_MOT) += mot-panel.o
obj-$(CONFIG_VIDEO_LCD_ORISETECH_OTM8009A) += orisetech_otm8009a.o
obj-$(CONFIG_VIDEO_LCD_RAYDIUM_RM68200) += raydium-rm68200.o
obj-$(CONFIG_VIDEO_LCD_RENESAS_R61307) += renesas-r61307.o
diff --git a/drivers/video/mot-panel.c b/drivers/video/mot-panel.c
new file mode 100644
index 0000000..a911495
--- /dev/null
+++ b/drivers/video/mot-panel.c
@@ -0,0 +1,308 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Motorola ATRIX 4G and DROID X2 DSI panel driver
+ * Exact manufacturer and model unknown
+ *
+ * Copyright (c) 2025 Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#include <backlight.h>
+#include <dm.h>
+#include <panel.h>
+#include <log.h>
+#include <misc.h>
+#include <mipi_display.h>
+#include <mipi_dsi.h>
+#include <asm/gpio.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <power/regulator.h>
+
+struct mot_panel_priv {
+ struct udevice *vdd;
+ struct udevice *vddio;
+
+ struct udevice *backlight;
+
+ struct gpio_desc reset_gpio;
+};
+
+#define dsi_generic_write_seq(dsi, cmd, seq...) do { \
+ static const u8 b[] = { cmd, seq }; \
+ int ret; \
+ ret = mipi_dsi_dcs_write_buffer(dsi, b, ARRAY_SIZE(b)); \
+ if (ret < 0) \
+ return ret; \
+ } while (0)
+
+static struct display_timing default_timing = {
+ .pixelclock.typ = 38250000,
+ .hactive.typ = 540,
+ .hfront_porch.typ = 32,
+ .hback_porch.typ = 32,
+ .hsync_len.typ = 16,
+ .vactive.typ = 960,
+ .vfront_porch.typ = 12,
+ .vback_porch.typ = 12,
+ .vsync_len.typ = 8,
+};
+
+static int mot_es2(struct mipi_dsi_device *dsi)
+{
+ int ret;
+
+ dsi_generic_write_seq(dsi, 0x55, 0x01);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ log_debug("%s: failed to exit sleep mode: %d\n", __func__, ret);
+ return ret;
+ }
+ mdelay(120);
+
+ dsi_generic_write_seq(dsi, 0xf4, 0x00, 0xbb, 0x46, 0x53, 0x0c, 0x49,
+ 0x74, 0x29, 0x12, 0x15, 0x2f, 0x2f, 0x04);
+ dsi_generic_write_seq(dsi, 0xf8, 0x4b, 0x04, 0x10, 0x1a, 0x2c, 0x2c,
+ 0x2c, 0x2c, 0x14, 0x12);
+
+ dsi_generic_write_seq(dsi, 0xb5, 0x03, 0x7f, 0x00, 0x80, 0xc7, 0x00);
+ dsi_generic_write_seq(dsi, 0xb7, 0x66, 0xf6, 0x46, 0x9f, 0x90, 0x99,
+ 0xff, 0x80, 0x6d, 0x01);
+
+ /* Gamma R */
+ dsi_generic_write_seq(dsi, 0xf9, 0x04);
+ dsi_generic_write_seq(dsi, 0xfa, 0x00, 0x2f, 0x30, 0x12, 0x0e, 0x0c,
+ 0x22, 0x27, 0x31, 0x2e, 0x07, 0x0f);
+ dsi_generic_write_seq(dsi, 0xfb, 0x00, 0x2f, 0x30, 0x12, 0x0e, 0x0c,
+ 0x22, 0x27, 0x31, 0x2e, 0x07, 0x0f);
+
+ /* Gamma G */
+ dsi_generic_write_seq(dsi, 0xf9, 0x02);
+ dsi_generic_write_seq(dsi, 0xfa, 0x00, 0x2f, 0x37, 0x15, 0x15, 0x11,
+ 0x1f, 0x25, 0x2d, 0x2a, 0x05, 0x0f);
+ dsi_generic_write_seq(dsi, 0xfb, 0x00, 0x2f, 0x37, 0x15, 0x15, 0x11,
+ 0x1f, 0x25, 0x2d, 0x2a, 0x05, 0x0f);
+
+ /* Gamma B */
+ dsi_generic_write_seq(dsi, 0xf9, 0x01);
+ dsi_generic_write_seq(dsi, 0xfa, 0x00, 0x2f, 0x3f, 0x16, 0x1f, 0x15,
+ 0x1f, 0x25, 0x2d, 0x2b, 0x06, 0x0b);
+ dsi_generic_write_seq(dsi, 0xfb, 0x00, 0x2f, 0x3f, 0x16, 0x1f, 0x15,
+ 0x1f, 0x25, 0x2d, 0x2b, 0x06, 0x0b);
+
+ /* Gamma W */
+ dsi_generic_write_seq(dsi, 0xf9, 0x20);
+ dsi_generic_write_seq(dsi, 0xfa, 0x00, 0x2f, 0x34, 0x15, 0x1a, 0x11,
+ 0x1f, 0x23, 0x2d, 0x29, 0x02, 0x08);
+ dsi_generic_write_seq(dsi, 0xfb, 0x00, 0x2f, 0x34, 0x15, 0x1a, 0x11,
+ 0x1f, 0x23, 0x2d, 0x29, 0x02, 0x08);
+
+ dsi_generic_write_seq(dsi, 0x53, 0x2c);
+ dsi_generic_write_seq(dsi, 0x35, 0x00);
+
+ return 0;
+}
+
+static int __maybe_unused mot_es4(struct mipi_dsi_device *dsi)
+{
+ int ret;
+
+ dsi_generic_write_seq(dsi, 0xd2, 0x04, 0x53);
+ dsi_generic_write_seq(dsi, 0xd2, 0x05, 0x53);
+ dsi_generic_write_seq(dsi, 0x55, 0x01);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ log_debug("%s: failed to exit sleep mode: %d\n", __func__, ret);
+ return ret;
+ }
+ mdelay(120);
+
+ dsi_generic_write_seq(dsi, 0xb5, 0x03, 0x7f, 0x0a, 0x80, 0xff, 0x00);
+ dsi_generic_write_seq(dsi, 0xb7, 0x7a, 0xf7, 0x4d, 0x91, 0x90, 0xb3,
+ 0xff, 0x80, 0x6d, 0x01);
+ dsi_generic_write_seq(dsi, 0xf4, 0x00, 0xbb, 0x46, 0x53, 0x0c, 0x49,
+ 0x74, 0x29, 0x12, 0x15, 0x37, 0x37, 0x04);
+ dsi_generic_write_seq(dsi, 0xf8, 0x0a, 0x04, 0x10, 0x2a, 0x35, 0x35,
+ 0x35, 0x35, 0x21, 0x1a);
+
+ /* Gamma R */
+ dsi_generic_write_seq(dsi, 0xf9, 0x04);
+ dsi_generic_write_seq(dsi, 0xfa, 0x08, 0x1c, 0x1b, 0x0f, 0x0f, 0x0a,
+ 0x1e, 0x22, 0x27, 0x26, 0x07, 0x0d);
+ dsi_generic_write_seq(dsi, 0xfb, 0x08, 0x3c, 0x27, 0x0f, 0x0f, 0x0a,
+ 0x1e, 0x26, 0x31, 0x2f, 0x07, 0x0b);
+
+ /* Gamma G */
+ dsi_generic_write_seq(dsi, 0xf9, 0x02);
+ dsi_generic_write_seq(dsi, 0xfa, 0x30, 0x14, 0x0f, 0x00, 0x06, 0x02,
+ 0x1e, 0x22, 0x27, 0x27, 0x08, 0x10);
+ dsi_generic_write_seq(dsi, 0xfb, 0x30, 0x35, 0x0f, 0x00, 0x0a, 0x02,
+ 0x1c, 0x23, 0x31, 0x2f, 0x08, 0x0e);
+
+ /* Gamma B */
+ dsi_generic_write_seq(dsi, 0xf9, 0x01);
+ dsi_generic_write_seq(dsi, 0xfa, 0x12, 0x1b, 0x26, 0x0e, 0x12, 0x0b,
+ 0x1e, 0x22, 0x27, 0x27, 0x06, 0x0c);
+ dsi_generic_write_seq(dsi, 0xfb, 0x12, 0x3b, 0x2c, 0x12, 0x12, 0x0e,
+ 0x1e, 0x26, 0x31, 0x2f, 0x06, 0x0d);
+
+ /* Gamma W */
+ dsi_generic_write_seq(dsi, 0xf9, 0x20);
+ dsi_generic_write_seq(dsi, 0xfa, 0x37, 0x1b, 0x09, 0x01, 0x06, 0x04,
+ 0x19, 0x19, 0x22, 0x24, 0x04, 0x15);
+ dsi_generic_write_seq(dsi, 0xfb, 0x37, 0x3b, 0x17, 0x01, 0x0a, 0x04,
+ 0x19, 0x1d, 0x2c, 0x2c, 0x04, 0x13);
+
+ dsi_generic_write_seq(dsi, 0x53, 0x2c);
+ dsi_generic_write_seq(dsi, 0x35, 0x00);
+ dsi_generic_write_seq(dsi, 0xc3, 0x01, 0x4e);
+
+ return 0;
+}
+
+static int mot_panel_enable_backlight(struct udevice *dev)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+ struct mipi_dsi_device *dsi = plat->device;
+ int ret;
+
+ dsi_generic_write_seq(dsi, 0xf0, 0x5a, 0x5a);
+ dsi_generic_write_seq(dsi, 0xf1, 0x5a, 0x5a);
+ dsi_generic_write_seq(dsi, 0xd0, 0x8e);
+
+ ret = mot_es2(dsi);
+ if (ret)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ log_debug("%s: failed to set display on: %d\n", __func__, ret);
+ return ret;
+ }
+ mdelay(20);
+
+ return 0;
+}
+
+static int mot_panel_set_backlight(struct udevice *dev, int percent)
+{
+ struct mot_panel_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = backlight_enable(priv->backlight);
+ if (ret)
+ return ret;
+
+ mdelay(5);
+
+ return backlight_set_brightness(priv->backlight, percent);
+}
+
+static int mot_panel_timings(struct udevice *dev, struct display_timing *timing)
+{
+ memcpy(timing, &default_timing, sizeof(*timing));
+ return 0;
+}
+
+static int mot_panel_of_to_plat(struct udevice *dev)
+{
+ struct mot_panel_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
+ "backlight", &priv->backlight);
+ if (ret) {
+ log_debug("%s: cannot get backlight: ret = %d\n", __func__, ret);
+ return ret;
+ }
+
+ ret = device_get_supply_regulator(dev, "vdd-supply", &priv->vdd);
+ if (ret) {
+ log_debug("%s: cannot get vdd-supply: ret = %d\n", __func__, ret);
+ return ret;
+ }
+
+ ret = device_get_supply_regulator(dev, "vddio-supply", &priv->vddio);
+ if (ret) {
+ log_debug("%s: cannot get vddio-supply: ret = %d\n", __func__, ret);
+ return ret;
+ }
+
+ ret = gpio_request_by_name(dev, "reset-gpios", 0,
+ &priv->reset_gpio, GPIOD_IS_OUT);
+ if (ret) {
+ log_debug("%s: could not decode reser-gpios (%d)\n", __func__, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mot_panel_hw_init(struct udevice *dev)
+{
+ struct mot_panel_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = regulator_set_enable_if_allowed(priv->vddio, 1);
+ if (ret) {
+ log_debug("%s: enabling vddio-supply failed (%d)\n", __func__, ret);
+ return ret;
+ }
+
+ ret = regulator_set_enable_if_allowed(priv->vdd, 1);
+ if (ret) {
+ log_debug("%s: enabling vdd-supply failed (%d)\n", __func__, ret);
+ return ret;
+ }
+
+ ret = dm_gpio_set_value(&priv->reset_gpio, 1);
+ if (ret) {
+ log_debug("%s: error entering reset (%d)\n", __func__, ret);
+ return ret;
+ }
+ mdelay(50);
+
+ ret = dm_gpio_set_value(&priv->reset_gpio, 0);
+ if (ret) {
+ log_debug("%s: error exiting reset (%d)\n", __func__, ret);
+ return ret;
+ }
+ mdelay(10);
+
+ return 0;
+}
+
+static int mot_panel_probe(struct udevice *dev)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+
+ /* fill characteristics of DSI data link */
+ plat->lanes = 2;
+ plat->format = MIPI_DSI_FMT_RGB888;
+ plat->mode_flags = MIPI_DSI_MODE_LPM;
+
+ return mot_panel_hw_init(dev);
+}
+
+static const struct panel_ops mot_panel_ops = {
+ .enable_backlight = mot_panel_enable_backlight,
+ .set_backlight = mot_panel_set_backlight,
+ .get_display_timing = mot_panel_timings,
+};
+
+static const struct udevice_id mot_panel_ids[] = {
+ { .compatible = "motorola,mot-panel" },
+ { }
+};
+
+U_BOOT_DRIVER(mot_panel) = {
+ .name = "mot_panel",
+ .id = UCLASS_PANEL,
+ .of_match = mot_panel_ids,
+ .ops = &mot_panel_ops,
+ .of_to_plat = mot_panel_of_to_plat,
+ .probe = mot_panel_probe,
+ .plat_auto = sizeof(struct mipi_dsi_panel_plat),
+ .priv_auto = sizeof(struct mot_panel_priv),
+};