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https://github.com/AsahiLinux/u-boot
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def72d5c62
Family of panels used by HTC in One X. Though were used variants at least from 3 vendors, this driver provides generic support for all of them. Tested-by: Ion Agorria <ion@agorria.com> # HTC One X T30 Sony Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # HTC One X T30 Sharp Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
252 lines
5.7 KiB
C
252 lines
5.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2022 Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <common.h>
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#include <backlight.h>
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#include <dm.h>
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#include <panel.h>
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#include <log.h>
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#include <misc.h>
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#include <mipi_display.h>
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#include <mipi_dsi.h>
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#include <asm/gpio.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <power/regulator.h>
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struct endeavoru_panel_priv {
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struct udevice *vdd;
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struct udevice *vddio;
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struct udevice *backlight;
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struct gpio_desc reset_gpio;
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};
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static struct display_timing default_timing = {
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.pixelclock.typ = 63200000,
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.hactive.typ = 720,
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.hfront_porch.typ = 55,
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.hback_porch.typ = 29,
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.hsync_len.typ = 16,
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.vactive.typ = 1280,
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.vfront_porch.typ = 2,
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.vback_porch.typ = 1,
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.vsync_len.typ = 1,
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};
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static void dcs_write_one(struct mipi_dsi_device *dsi, u8 cmd, u8 data)
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{
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mipi_dsi_dcs_write(dsi, cmd, &data, 1);
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}
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/*
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* This panel is not able to auto-increment all cmd addresses so for some of
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* them, we need to send them one by one...
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*/
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#define dcs_write_seq(dsi, cmd, seq...) \
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({ \
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static const u8 d[] = { seq }; \
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unsigned int i; \
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\
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for (i = 0; i < ARRAY_SIZE(d) ; i++) \
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dcs_write_one(dsi, cmd + i, d[i]); \
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})
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static int endeavoru_panel_enable_backlight(struct udevice *dev)
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{
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struct endeavoru_panel_priv *priv = dev_get_priv(dev);
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int ret;
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ret = dm_gpio_set_value(&priv->reset_gpio, 1);
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if (ret) {
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log_err("error changing reset-gpios (%d)\n", ret);
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return ret;
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}
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mdelay(5);
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ret = regulator_set_enable_if_allowed(priv->vddio, 1);
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if (ret) {
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log_err("error enabling iovcc-supply (%d)\n", ret);
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return ret;
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}
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mdelay(1);
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ret = regulator_set_enable_if_allowed(priv->vdd, 1);
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if (ret) {
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log_err("error enabling vcc-supply (%d)\n", ret);
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return ret;
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}
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mdelay(20);
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ret = dm_gpio_set_value(&priv->reset_gpio, 0);
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if (ret) {
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log_err("error changing reset-gpios (%d)\n", ret);
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return ret;
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}
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mdelay(2);
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/* Reset panel */
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ret = dm_gpio_set_value(&priv->reset_gpio, 1);
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if (ret) {
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log_err("error changing reset-gpios (%d)\n", ret);
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return ret;
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}
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mdelay(1);
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ret = dm_gpio_set_value(&priv->reset_gpio, 0);
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if (ret) {
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log_err("error changing reset-gpios (%d)\n", ret);
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return ret;
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}
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mdelay(25);
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return 0;
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}
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static int endeavoru_panel_set_backlight(struct udevice *dev, int percent)
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{
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struct endeavoru_panel_priv *priv = dev_get_priv(dev);
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struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
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struct mipi_dsi_device *dsi = plat->device;
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int ret;
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dcs_write_one(dsi, 0xc2, 0x08);
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/* color enhancement 2.2 */
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dcs_write_one(dsi, 0xff, 0x03);
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dcs_write_one(dsi, 0xfe, 0x08);
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dcs_write_one(dsi, 0x18, 0x00);
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dcs_write_one(dsi, 0x19, 0x00);
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dcs_write_one(dsi, 0x1a, 0x00);
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dcs_write_one(dsi, 0x25, 0x26);
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dcs_write_seq(dsi, 0x00, 0x00, 0x05, 0x10, 0x17,
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0x22, 0x26, 0x29, 0x29, 0x26, 0x23,
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0x17, 0x12, 0x06, 0x02, 0x01, 0x00);
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dcs_write_one(dsi, 0xfb, 0x01);
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dcs_write_one(dsi, 0xff, 0x00);
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dcs_write_one(dsi, 0xfe, 0x01);
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mipi_dsi_dcs_exit_sleep_mode(dsi);
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mdelay(105);
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dcs_write_one(dsi, 0x35, 0x00);
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/* PWM frequency adjust */
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dcs_write_one(dsi, 0xff, 0x04);
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dcs_write_one(dsi, 0x0a, 0x07);
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dcs_write_one(dsi, 0x09, 0x20);
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dcs_write_one(dsi, 0xff, 0x00);
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dcs_write_one(dsi, 0xff, 0xee);
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dcs_write_one(dsi, 0x12, 0x50);
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dcs_write_one(dsi, 0x13, 0x02);
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dcs_write_one(dsi, 0x6a, 0x60);
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dcs_write_one(dsi, 0xfb, 0x01);
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dcs_write_one(dsi, 0xff, 0x00);
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mipi_dsi_dcs_set_display_on(dsi);
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mdelay(42);
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dcs_write_one(dsi, 0xba, 0x01);
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dcs_write_one(dsi, 0x53, 0x24);
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dcs_write_one(dsi, 0x55, 0x80);
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dcs_write_one(dsi, 0x5e, 0x06);
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ret = backlight_enable(priv->backlight);
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if (ret)
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return ret;
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/* Set backlight */
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dcs_write_one(dsi, 0x51, 0x96);
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ret = backlight_set_brightness(priv->backlight, percent);
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if (ret)
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return ret;
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return 0;
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}
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static int endeavoru_panel_timings(struct udevice *dev,
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struct display_timing *timing)
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{
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memcpy(timing, &default_timing, sizeof(*timing));
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return 0;
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}
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static int endeavoru_panel_of_to_plat(struct udevice *dev)
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{
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struct endeavoru_panel_priv *priv = dev_get_priv(dev);
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int ret;
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ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
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"backlight", &priv->backlight);
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if (ret) {
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log_err("cannot get backlight: ret = %d\n", ret);
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return ret;
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}
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ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
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"vdd-supply", &priv->vdd);
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if (ret) {
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log_err("cannot get vdd-supply: ret = %d\n", ret);
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return ret;
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}
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ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
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"vddio-supply", &priv->vddio);
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if (ret) {
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log_err("cannot get vddio-supply: ret = %d\n", ret);
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return ret;
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}
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ret = gpio_request_by_name(dev, "reset-gpios", 0,
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&priv->reset_gpio, GPIOD_IS_OUT);
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if (ret) {
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log_err("could not decode reser-gpios (%d)\n", ret);
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return ret;
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}
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return 0;
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}
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static int endeavoru_panel_probe(struct udevice *dev)
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{
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struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
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/* fill characteristics of DSI data link */
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plat->lanes = 2;
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plat->format = MIPI_DSI_FMT_RGB888;
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plat->mode_flags = MIPI_DSI_MODE_VIDEO;
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return 0;
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}
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static const struct panel_ops endeavoru_panel_ops = {
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.enable_backlight = endeavoru_panel_enable_backlight,
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.set_backlight = endeavoru_panel_set_backlight,
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.get_display_timing = endeavoru_panel_timings,
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};
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static const struct udevice_id endeavoru_panel_ids[] = {
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{ .compatible = "htc,edge-panel" },
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{ }
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};
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U_BOOT_DRIVER(endeavoru_panel) = {
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.name = "endeavoru_panel",
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.id = UCLASS_PANEL,
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.of_match = endeavoru_panel_ids,
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.ops = &endeavoru_panel_ops,
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.of_to_plat = endeavoru_panel_of_to_plat,
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.probe = endeavoru_panel_probe,
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.plat_auto = sizeof(struct mipi_dsi_panel_plat),
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.priv_auto = sizeof(struct endeavoru_panel_priv),
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};
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