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video: panel: add LG LG070WX3 MIPI DSI panel driver
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>
This commit is contained in:
Svyatoslav Ryhel
Anatolij Gustschin
parent
edb8a528f9
commit
3cb31745c4
3 changed files with 195 additions and 0 deletions
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@ -522,6 +522,14 @@ config VIDEO_LCD_ORISETECH_OTM8009A
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Say Y here if you want to enable support for Orise Technology
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otm8009a 480x800 dsi 2dl panel.
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config VIDEO_LCD_LG_LD070WX3
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bool "LD070WX3 DSI LCD panel support"
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depends on PANEL && BACKLIGHT
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select VIDEO_MIPI_DSI
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help
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Say Y here if you want to enable support for LG LD070WX3
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800x1280 DSI video mode panel.
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config VIDEO_LCD_RAYDIUM_RM68200
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bool "RM68200 DSI LCD panel support"
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select VIDEO_MIPI_DSI
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@ -58,6 +58,7 @@ obj-$(CONFIG_VIDEO_LCD_ANX9804) += anx9804.o
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obj-$(CONFIG_VIDEO_LCD_ENDEAVORU) += endeavoru-panel.o
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obj-$(CONFIG_VIDEO_LCD_HIMAX_HX8394) += himax-hx8394.o
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obj-$(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM) += hitachi_tx18d42vm_lcd.o
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obj-$(CONFIG_VIDEO_LCD_LG_LD070WX3) += lg-ld070wx3.o
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obj-$(CONFIG_VIDEO_LCD_ORISETECH_OTM8009A) += orisetech_otm8009a.o
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obj-$(CONFIG_VIDEO_LCD_RAYDIUM_RM68200) += raydium-rm68200.o
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obj-$(CONFIG_VIDEO_LCD_RENESAS_R61307) += renesas-r61307.o
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186
drivers/video/lg-ld070wx3.c
Normal file
186
drivers/video/lg-ld070wx3.c
Normal file
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@ -0,0 +1,186 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* LG LD070WX3-SL01 DSI panel driver
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*
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* Copyright (c) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
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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 <linux/delay.h>
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#include <power/regulator.h>
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struct lg_ld070wx3_priv {
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struct udevice *vdd;
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struct udevice *vcc;
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struct udevice *backlight;
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};
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static struct display_timing default_timing = {
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.pixelclock.typ = 70000000,
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.hactive.typ = 800,
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.hfront_porch.typ = 32,
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.hback_porch.typ = 48,
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.hsync_len.typ = 8,
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.vactive.typ = 1280,
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.vfront_porch.typ = 5,
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.vback_porch.typ = 3,
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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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static int lg_ld070wx3_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_soft_reset(dsi);
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if (ret < 0) {
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log_debug("%s: failed to soft reset panel: %d\n",
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__func__, ret);
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return ret;
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}
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/* Delay before sending new command after soft reset */
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mdelay(20);
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/* Differential input impedance selection */
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dcs_write_one(dsi, 0xAE, 0x0B);
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/* Enter test mode 1 and 2*/
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dcs_write_one(dsi, 0xEE, 0xEA);
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dcs_write_one(dsi, 0xEF, 0x5F);
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/* Increased MIPI CLK driving ability */
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dcs_write_one(dsi, 0xF2, 0x68);
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/* Exit test mode 1 and 2 */
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dcs_write_one(dsi, 0xEE, 0x00);
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dcs_write_one(dsi, 0xEF, 0x00);
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return 0;
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}
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static int lg_ld070wx3_set_backlight(struct udevice *dev, int percent)
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{
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struct lg_ld070wx3_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 lg_ld070wx3_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 lg_ld070wx3_of_to_plat(struct udevice *dev)
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{
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struct lg_ld070wx3_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: 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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"vcc-supply", &priv->vcc);
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if (ret) {
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log_debug("%s: cannot get vcc-supply: ret = %d\n",
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__func__, 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 lg_ld070wx3_hw_init(struct udevice *dev)
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{
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struct lg_ld070wx3_priv *priv = dev_get_priv(dev);
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int ret;
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ret = regulator_set_enable_if_allowed(priv->vcc, 1);
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if (ret) {
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log_debug("%s: enabling vcc-supply failed (%d)\n",
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__func__, ret);
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return ret;
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}
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ret = regulator_set_enable_if_allowed(priv->vdd, 1);
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if (ret) {
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log_debug("%s: enabling vdd-supply failed (%d)\n",
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__func__, ret);
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return ret;
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}
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/*
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* According to spec delay between enabling supply is 0,
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* for regulators to reach required voltage ~5ms needed.
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* MIPI interface signal for setup requires additional
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* 110ms which in total results in 115ms.
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*/
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mdelay(115);
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return 0;
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}
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static int lg_ld070wx3_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 lg_ld070wx3_hw_init(dev);
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}
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static const struct panel_ops lg_ld070wx3_ops = {
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.enable_backlight = lg_ld070wx3_enable_backlight,
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.set_backlight = lg_ld070wx3_set_backlight,
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.get_display_timing = lg_ld070wx3_timings,
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};
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static const struct udevice_id lg_ld070wx3_ids[] = {
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{ .compatible = "lg,ld070wx3-sl01" },
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{ }
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};
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U_BOOT_DRIVER(lg_ld070wx3) = {
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.name = "lg_ld070wx3",
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.id = UCLASS_PANEL,
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.of_match = lg_ld070wx3_ids,
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.ops = &lg_ld070wx3_ops,
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.of_to_plat = lg_ld070wx3_of_to_plat,
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.probe = lg_ld070wx3_probe,
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.plat_auto = sizeof(struct mipi_dsi_panel_plat),
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.priv_auto = sizeof(struct lg_ld070wx3_priv),
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};
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