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LTL106HL02 is a color active matrix TFT (Thin Film Transistor) liquid crystal display (LCD) that uses amorphous silicon TFT as switching devices. This model is composed of a TFT LCD panel, a driver circuit and a backlight unit. The resolution of a 10.6" contains 1920 x 1080 pixels and can display up to 16,8M color with wide viewing angle. Co-developed-by: Jonas Schwöbel <jonasschwoebel@yahoo.de> Signed-off-by: Jonas Schwöbel <jonasschwoebel@yahoo.de> Co-developed-by: Svyatoslav Ryhel <clamor95@gmail.com> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Signed-off-by: Anton Bambura <jenneron@protonmail.com>
157 lines
3.8 KiB
C
157 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Samsung LTL106HL02-001 DSI panel driver
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*
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* Copyright (c) 2020 Anton Bambura <jenneron@protonmail.com>
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* Copyright (c) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
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* Copyright (c) 2024 Jonas Schwöbel <jonasschwoebel@yahoo.de>
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*/
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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 <mipi_dsi.h>
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#include <asm/gpio.h>
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#include <linux/delay.h>
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#include <power/regulator.h>
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struct samsung_ltl106hl02_priv {
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struct udevice *vdd;
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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 = 137000000,
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.hactive.typ = 1920,
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.hfront_porch.typ = 32,
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.hback_porch.typ = 64,
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.hsync_len.typ = 32,
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.vactive.typ = 1080,
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.vfront_porch.typ = 2,
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.vback_porch.typ = 26,
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.vsync_len.typ = 3,
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};
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static int samsung_ltl106hl02_enable_backlight(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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struct mipi_dsi_device *dsi = plat->device;
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int ret;
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
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if (ret < 0) {
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log_debug("%s: failed to exit sleep mode: %d\n",
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__func__, ret);
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return ret;
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}
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mdelay(70);
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ret = mipi_dsi_dcs_set_display_on(dsi);
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if (ret < 0) {
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log_debug("%s: failed to enable display: %d\n",
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__func__, ret);
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return ret;
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}
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mdelay(5);
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return 0;
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}
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static int samsung_ltl106hl02_set_backlight(struct udevice *dev, int percent)
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{
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struct samsung_ltl106hl02_priv *priv = dev_get_priv(dev);
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int ret;
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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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return backlight_set_brightness(priv->backlight, percent);
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}
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static int samsung_ltl106hl02_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 samsung_ltl106hl02_of_to_plat(struct udevice *dev)
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{
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struct samsung_ltl106hl02_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_debug("%s: cannot get backlight: ret = %d\n",
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__func__, 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_debug("%s: cannot get vdd-supply: error %d\n",
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__func__, ret);
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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_debug("%s: cannot get reset-gpios: error %d\n",
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__func__, ret);
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return 0;
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}
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static int samsung_ltl106hl02_hw_init(struct udevice *dev)
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{
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struct samsung_ltl106hl02_priv *priv = dev_get_priv(dev);
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dm_gpio_set_value(&priv->reset_gpio, 1);
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regulator_set_enable_if_allowed(priv->vdd, 1);
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/* Dataheets states at least 8.5 msec for vdd stabilization */
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mdelay(10);
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dm_gpio_set_value(&priv->reset_gpio, 0);
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return 0;
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}
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static int samsung_ltl106hl02_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 = 4;
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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 samsung_ltl106hl02_hw_init(dev);
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}
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static const struct panel_ops samsung_ltl106hl02_ops = {
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.enable_backlight = samsung_ltl106hl02_enable_backlight,
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.set_backlight = samsung_ltl106hl02_set_backlight,
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.get_display_timing = samsung_ltl106hl02_timings,
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};
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static const struct udevice_id samsung_ltl106hl02_ids[] = {
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{ .compatible = "samsung,ltl106hl02-001" },
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{ }
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};
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U_BOOT_DRIVER(samsung_ltl106hl02) = {
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.name = "samsung_ltl106hl02",
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.id = UCLASS_PANEL,
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.of_match = samsung_ltl106hl02_ids,
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.ops = &samsung_ltl106hl02_ops,
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.of_to_plat = samsung_ltl106hl02_of_to_plat,
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.probe = samsung_ltl106hl02_probe,
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.plat_auto = sizeof(struct mipi_dsi_panel_plat),
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.priv_auto = sizeof(struct samsung_ltl106hl02_priv),
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};
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