The LD070WX3 is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED) backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type display operating in the normally Black mode. This TFT-LCD has 7.0 inches diagonally measured active display area with WXGA resolution (800 by 1280 pixel array).
Signed-off-by: Svyatoslav Ryhel clamor95@gmail.com --- drivers/video/Kconfig | 8 ++ drivers/video/Makefile | 1 + drivers/video/lg-ld070wx3.c | 186 ++++++++++++++++++++++++++++++++++++ 3 files changed, 195 insertions(+) create mode 100644 drivers/video/lg-ld070wx3.c
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index e2016d73d1..05567a0095 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -522,6 +522,14 @@ config VIDEO_LCD_ORISETECH_OTM8009A Say Y here if you want to enable support for Orise Technology otm8009a 480x800 dsi 2dl panel.
+config VIDEO_LCD_LG_LD070WX3 + bool "LD070WX3 DSI LCD panel support" + depends on PANEL && BACKLIGHT + select VIDEO_MIPI_DSI + help + Say Y here if you want to enable support for LG LD070WX3 + 800x1280 DSI video mode panel. + config VIDEO_LCD_RAYDIUM_RM68200 bool "RM68200 DSI LCD panel support" select VIDEO_MIPI_DSI diff --git a/drivers/video/Makefile b/drivers/video/Makefile index fdc2937632..bb6d9b74b9 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -58,6 +58,7 @@ obj-$(CONFIG_VIDEO_LCD_ANX9804) += anx9804.o obj-$(CONFIG_VIDEO_LCD_ENDEAVORU) += endeavoru-panel.o obj-$(CONFIG_VIDEO_LCD_HIMAX_HX8394) += himax-hx8394.o obj-$(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM) += hitachi_tx18d42vm_lcd.o +obj-$(CONFIG_VIDEO_LCD_LG_LD070WX3) += lg-ld070wx3.o obj-$(CONFIG_VIDEO_LCD_ORISETECH_OTM8009A) += orisetech_otm8009a.o obj-$(CONFIG_VIDEO_LCD_RAYDIUM_RM68200) += raydium-rm68200.o obj-$(CONFIG_VIDEO_LCD_RENESAS_R61307) += renesas-r61307.o diff --git a/drivers/video/lg-ld070wx3.c b/drivers/video/lg-ld070wx3.c new file mode 100644 index 0000000000..610a06ffe7 --- /dev/null +++ b/drivers/video/lg-ld070wx3.c @@ -0,0 +1,186 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * LG LD070WX3-SL01 DSI panel driver + * + * Copyright (c) 2023 Svyatoslav Ryhel clamor95@gmail.com + */ + +#include <backlight.h> +#include <dm.h> +#include <panel.h> +#include <log.h> +#include <mipi_dsi.h> +#include <linux/delay.h> +#include <power/regulator.h> + +struct lg_ld070wx3_priv { + struct udevice *vdd; + struct udevice *vcc; + + struct udevice *backlight; +}; + +static struct display_timing default_timing = { + .pixelclock.typ = 70000000, + .hactive.typ = 800, + .hfront_porch.typ = 32, + .hback_porch.typ = 48, + .hsync_len.typ = 8, + .vactive.typ = 1280, + .vfront_porch.typ = 5, + .vback_porch.typ = 3, + .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); +} + +static int lg_ld070wx3_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_soft_reset(dsi); + if (ret < 0) { + log_debug("%s: failed to soft reset panel: %d\n", + __func__, ret); + return ret; + } + + /* Delay before sending new command after soft reset */ + mdelay(20); + + /* Differential input impedance selection */ + dcs_write_one(dsi, 0xAE, 0x0B); + + /* Enter test mode 1 and 2*/ + dcs_write_one(dsi, 0xEE, 0xEA); + dcs_write_one(dsi, 0xEF, 0x5F); + + /* Increased MIPI CLK driving ability */ + dcs_write_one(dsi, 0xF2, 0x68); + + /* Exit test mode 1 and 2 */ + dcs_write_one(dsi, 0xEE, 0x00); + dcs_write_one(dsi, 0xEF, 0x00); + + return 0; +} + +static int lg_ld070wx3_set_backlight(struct udevice *dev, int percent) +{ + struct lg_ld070wx3_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 lg_ld070wx3_timings(struct udevice *dev, + struct display_timing *timing) +{ + memcpy(timing, &default_timing, sizeof(*timing)); + return 0; +} + +static int lg_ld070wx3_of_to_plat(struct udevice *dev) +{ + struct lg_ld070wx3_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: ret = %d\n", + __func__, ret); + return ret; + } + + ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev, + "vcc-supply", &priv->vcc); + if (ret) { + log_debug("%s: cannot get vcc-supply: ret = %d\n", + __func__, ret); + return ret; + } + + return 0; +} + +static int lg_ld070wx3_hw_init(struct udevice *dev) +{ + struct lg_ld070wx3_priv *priv = dev_get_priv(dev); + int ret; + + ret = regulator_set_enable_if_allowed(priv->vcc, 1); + if (ret) { + log_debug("%s: enabling vcc-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; + } + + /* + * According to spec delay between enabling supply is 0, + * for regulators to reach required voltage ~5ms needed. + * MIPI interface signal for setup requires additional + * 110ms which in total results in 115ms. + */ + mdelay(115); + + return 0; +} + +static int lg_ld070wx3_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 lg_ld070wx3_hw_init(dev); +} + +static const struct panel_ops lg_ld070wx3_ops = { + .enable_backlight = lg_ld070wx3_enable_backlight, + .set_backlight = lg_ld070wx3_set_backlight, + .get_display_timing = lg_ld070wx3_timings, +}; + +static const struct udevice_id lg_ld070wx3_ids[] = { + { .compatible = "lg,ld070wx3-sl01" }, + { } +}; + +U_BOOT_DRIVER(lg_ld070wx3) = { + .name = "lg_ld070wx3", + .id = UCLASS_PANEL, + .of_match = lg_ld070wx3_ids, + .ops = &lg_ld070wx3_ops, + .of_to_plat = lg_ld070wx3_of_to_plat, + .probe = lg_ld070wx3_probe, + .plat_auto = sizeof(struct mipi_dsi_panel_plat), + .priv_auto = sizeof(struct lg_ld070wx3_priv), +};