diff options
Diffstat (limited to 'drivers/video/samsung-ltl106hl02.c')
| -rw-r--r-- | drivers/video/samsung-ltl106hl02.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/video/samsung-ltl106hl02.c b/drivers/video/samsung-ltl106hl02.c new file mode 100644 index 00000000000..5e6c11c4be3 --- /dev/null +++ b/drivers/video/samsung-ltl106hl02.c @@ -0,0 +1,157 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Samsung LTL106HL02-001 DSI panel driver + * + * Copyright (c) 2020 Anton Bambura <jenneron@protonmail.com> + * Copyright (c) 2023 Svyatoslav Ryhel <clamor95@gmail.com> + * Copyright (c) 2024 Jonas Schwöbel <jonasschwoebel@yahoo.de> + */ + +#include <backlight.h> +#include <dm.h> +#include <panel.h> +#include <log.h> +#include <mipi_dsi.h> +#include <asm/gpio.h> +#include <linux/delay.h> +#include <power/regulator.h> + +struct samsung_ltl106hl02_priv { + struct udevice *vdd; + struct udevice *backlight; + + struct gpio_desc reset_gpio; +}; + +static struct display_timing default_timing = { + .pixelclock.typ = 137000000, + .hactive.typ = 1920, + .hfront_porch.typ = 32, + .hback_porch.typ = 64, + .hsync_len.typ = 32, + .vactive.typ = 1080, + .vfront_porch.typ = 2, + .vback_porch.typ = 26, + .vsync_len.typ = 3, +}; + +static int samsung_ltl106hl02_enable_backlight(struct udevice *dev) +{ + struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); + struct mipi_dsi_device *dsi = plat->device; + int ret; + + 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(70); + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) { + log_debug("%s: failed to enable display: %d\n", + __func__, ret); + return ret; + } + mdelay(5); + + return 0; +} + +static int samsung_ltl106hl02_set_backlight(struct udevice *dev, int percent) +{ + struct samsung_ltl106hl02_priv *priv = dev_get_priv(dev); + int ret; + + ret = backlight_enable(priv->backlight); + if (ret) + return ret; + + return backlight_set_brightness(priv->backlight, percent); +} + +static int samsung_ltl106hl02_timings(struct udevice *dev, + struct display_timing *timing) +{ + memcpy(timing, &default_timing, sizeof(*timing)); + return 0; +} + +static int samsung_ltl106hl02_of_to_plat(struct udevice *dev) +{ + struct samsung_ltl106hl02_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 = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev, + "vdd-supply", &priv->vdd); + if (ret) + log_debug("%s: cannot get vdd-supply: error %d\n", + __func__, ret); + + ret = gpio_request_by_name(dev, "reset-gpios", 0, + &priv->reset_gpio, GPIOD_IS_OUT); + if (ret) + log_debug("%s: cannot get reset-gpios: error %d\n", + __func__, ret); + + return 0; +} + +static int samsung_ltl106hl02_hw_init(struct udevice *dev) +{ + struct samsung_ltl106hl02_priv *priv = dev_get_priv(dev); + + dm_gpio_set_value(&priv->reset_gpio, 1); + regulator_set_enable_if_allowed(priv->vdd, 1); + + /* Dataheets states at least 8.5 msec for vdd stabilization */ + mdelay(10); + + dm_gpio_set_value(&priv->reset_gpio, 0); + + return 0; +} + +static int samsung_ltl106hl02_probe(struct udevice *dev) +{ + struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); + + /* fill characteristics of DSI data link */ + plat->lanes = 4; + plat->format = MIPI_DSI_FMT_RGB888; + plat->mode_flags = MIPI_DSI_MODE_VIDEO; + + return samsung_ltl106hl02_hw_init(dev); +} + +static const struct panel_ops samsung_ltl106hl02_ops = { + .enable_backlight = samsung_ltl106hl02_enable_backlight, + .set_backlight = samsung_ltl106hl02_set_backlight, + .get_display_timing = samsung_ltl106hl02_timings, +}; + +static const struct udevice_id samsung_ltl106hl02_ids[] = { + { .compatible = "samsung,ltl106hl02-001" }, + { } +}; + +U_BOOT_DRIVER(samsung_ltl106hl02) = { + .name = "samsung_ltl106hl02", + .id = UCLASS_PANEL, + .of_match = samsung_ltl106hl02_ids, + .ops = &samsung_ltl106hl02_ops, + .of_to_plat = samsung_ltl106hl02_of_to_plat, + .probe = samsung_ltl106hl02_probe, + .plat_auto = sizeof(struct mipi_dsi_panel_plat), + .priv_auto = sizeof(struct samsung_ltl106hl02_priv), +}; |