--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2022 Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#include <common.h>
+#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 endeavoru_panel_priv {
+ struct udevice *vdd;
+ struct udevice *vddio;
+
+ struct udevice *backlight;
+
+ struct gpio_desc reset_gpio;
+};
+
+static struct display_timing default_timing = {
+ .pixelclock.typ = 63200000,
+ .hactive.typ = 720,
+ .hfront_porch.typ = 55,
+ .hback_porch.typ = 29,
+ .hsync_len.typ = 16,
+ .vactive.typ = 1280,
+ .vfront_porch.typ = 2,
+ .vback_porch.typ = 1,
+ .vsync_len.typ = 1,
+};
+
+static void dcs_write_one(struct mipi_dsi_device *dsi, u8 cmd, u8 data)
+{
+ mipi_dsi_dcs_write(dsi, cmd, &data, 1);
+}
+
+/*
+ * This panel is not able to auto-increment all cmd addresses so for some of
+ * them, we need to send them one by one...
+ */
+#define dcs_write_seq(dsi, cmd, seq...) \
+({ \
+ static const u8 d[] = { seq }; \
+ unsigned int i; \
+ \
+ for (i = 0; i < ARRAY_SIZE(d) ; i++) \
+ dcs_write_one(dsi, cmd + i, d[i]); \
+})
+
+static int endeavoru_panel_enable_backlight(struct udevice *dev)
+{
+ struct endeavoru_panel_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = dm_gpio_set_value(&priv->reset_gpio, 1);
+ if (ret) {
+ log_err("error changing reset-gpios (%d)\n", ret);
+ return ret;
+ }
+ mdelay(5);
+
+ ret = regulator_set_enable_if_allowed(priv->vddio, 1);
+ if (ret) {
+ log_err("error enabling iovcc-supply (%d)\n", ret);
+ return ret;
+ }
+ mdelay(1);
+
+ ret = regulator_set_enable_if_allowed(priv->vdd, 1);
+ if (ret) {
+ log_err("error enabling vcc-supply (%d)\n", ret);
+ return ret;
+ }
+ mdelay(20);
+
+ ret = dm_gpio_set_value(&priv->reset_gpio, 0);
+ if (ret) {
+ log_err("error changing reset-gpios (%d)\n", ret);
+ return ret;
+ }
+ mdelay(2);
+
+ /* Reset panel */
+ ret = dm_gpio_set_value(&priv->reset_gpio, 1);
+ if (ret) {
+ log_err("error changing reset-gpios (%d)\n", ret);
+ return ret;
+ }
+ mdelay(1);
+
+ ret = dm_gpio_set_value(&priv->reset_gpio, 0);
+ if (ret) {
+ log_err("error changing reset-gpios (%d)\n", ret);
+ return ret;
+ }
+ mdelay(25);
+
+ return 0;
+}
+
+static int endeavoru_panel_set_backlight(struct udevice *dev, int percent)
+{
+ struct endeavoru_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 ret;
+
+ dcs_write_one(dsi, 0xc2, 0x08);
+
+ /* color enhancement 2.2 */
+ dcs_write_one(dsi, 0xff, 0x03);
+ dcs_write_one(dsi, 0xfe, 0x08);
+ dcs_write_one(dsi, 0x18, 0x00);
+ dcs_write_one(dsi, 0x19, 0x00);
+ dcs_write_one(dsi, 0x1a, 0x00);
+ dcs_write_one(dsi, 0x25, 0x26);
+
+ dcs_write_seq(dsi, 0x00, 0x00, 0x05, 0x10, 0x17,
+ 0x22, 0x26, 0x29, 0x29, 0x26, 0x23,
+ 0x17, 0x12, 0x06, 0x02, 0x01, 0x00);
+
+ dcs_write_one(dsi, 0xfb, 0x01);
+ dcs_write_one(dsi, 0xff, 0x00);
+ dcs_write_one(dsi, 0xfe, 0x01);
+
+ mipi_dsi_dcs_exit_sleep_mode(dsi);
+
+ mdelay(105);
+
+ dcs_write_one(dsi, 0x35, 0x00);
+
+ /* PWM frequency adjust */
+ dcs_write_one(dsi, 0xff, 0x04);
+ dcs_write_one(dsi, 0x0a, 0x07);
+ dcs_write_one(dsi, 0x09, 0x20);
+ dcs_write_one(dsi, 0xff, 0x00);
+
+ dcs_write_one(dsi, 0xff, 0xee);
+ dcs_write_one(dsi, 0x12, 0x50);
+ dcs_write_one(dsi, 0x13, 0x02);
+ dcs_write_one(dsi, 0x6a, 0x60);
+ dcs_write_one(dsi, 0xfb, 0x01);
+ dcs_write_one(dsi, 0xff, 0x00);
+
+ mipi_dsi_dcs_set_display_on(dsi);
+
+ mdelay(42);
+
+ dcs_write_one(dsi, 0xba, 0x01);
+
+ dcs_write_one(dsi, 0x53, 0x24);
+ dcs_write_one(dsi, 0x55, 0x80);
+ dcs_write_one(dsi, 0x5e, 0x06);
+
+ ret = backlight_enable(priv->backlight);
+ if (ret)
+ return ret;
+
+ /* Set backlight */
+ dcs_write_one(dsi, 0x51, 0x96);
+
+ ret = backlight_set_brightness(priv->backlight, percent);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int endeavoru_panel_timings(struct udevice *dev,
+ struct display_timing *timing)
+{
+ memcpy(timing, &default_timing, sizeof(*timing));
+ return 0;
+}
+
+static int endeavoru_panel_of_to_plat(struct udevice *dev)
+{
+ struct endeavoru_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_err("cannot get backlight: ret = %d\n", ret);
+ return ret;
+ }
+
+ ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
+ "vdd-supply", &priv->vdd);
+ if (ret) {
+ log_err("cannot get vdd-supply: ret = %d\n", ret);
+ return ret;
+ }
+
+ ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
+ "vddio-supply", &priv->vddio);
+ if (ret) {
+ log_err("cannot get vddio-supply: ret = %d\n", ret);
+ return ret;
+ }
+
+ ret = gpio_request_by_name(dev, "reset-gpios", 0,
+ &priv->reset_gpio, GPIOD_IS_OUT);
+ if (ret) {
+ log_err("could not decode reser-gpios (%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int endeavoru_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_VIDEO;
+
+ return 0;
+}
+
+static const struct panel_ops endeavoru_panel_ops = {
+ .enable_backlight = endeavoru_panel_enable_backlight,
+ .set_backlight = endeavoru_panel_set_backlight,
+ .get_display_timing = endeavoru_panel_timings,
+};
+
+static const struct udevice_id endeavoru_panel_ids[] = {
+ { .compatible = "htc,edge-panel" },
+ { }
+};
+
+U_BOOT_DRIVER(endeavoru_panel) = {
+ .name = "endeavoru_panel",
+ .id = UCLASS_PANEL,
+ .of_match = endeavoru_panel_ids,
+ .ops = &endeavoru_panel_ops,
+ .of_to_plat = endeavoru_panel_of_to_plat,
+ .probe = endeavoru_panel_probe,
+ .plat_auto = sizeof(struct mipi_dsi_panel_plat),
+ .priv_auto = sizeof(struct endeavoru_panel_priv),
+};
projects / u-boot.git / commitdiff
