--- /dev/null
+// 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),
+};
git.openpandora.org / pandora-u-boot.git / commitdiff