diff options
author | Neil Armstrong <narmstrong@baylibre.com> | 2020-09-29 12:53:53 +0300 |
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committer | Neil Armstrong <narmstrong@baylibre.com> | 2021-01-11 16:59:54 +0300 |
commit | c823f2438cc9ad4ed0fd8fb8088b86d1813ed98c (patch) | |
tree | 5e4ca1214077d2d8e5d8f9eed9e6d9450ec3b2b2 /drivers/video/tdo-tl070wsh30.c | |
parent | 807b0f0851e6c263e56dba992f6ba98d336d9f48 (diff) | |
download | u-boot-c823f2438cc9ad4ed0fd8fb8088b86d1813ed98c.tar.xz |
video: add TDO tl070wsh30 panel driver
This adds support for the TDO TL070WSH30 TFT-LCD panel module.
The panel has a 1024×600 resolution and uses 24 bit RGB per pixel.
It provides a MIPI DSI interface to the host, a built-in LED backlight
and touch controller.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Diffstat (limited to 'drivers/video/tdo-tl070wsh30.c')
-rw-r--r-- | drivers/video/tdo-tl070wsh30.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/drivers/video/tdo-tl070wsh30.c b/drivers/video/tdo-tl070wsh30.c new file mode 100644 index 0000000000..ae9d11f475 --- /dev/null +++ b/drivers/video/tdo-tl070wsh30.c @@ -0,0 +1,155 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + */ +#include <common.h> +#include <backlight.h> +#include <dm.h> +#include <mipi_dsi.h> +#include <panel.h> +#include <asm/gpio.h> +#include <dm/device_compat.h> +#include <linux/delay.h> +#include <power/regulator.h> + +struct tl070wsh30_panel_priv { + struct udevice *reg; + struct udevice *backlight; + struct gpio_desc reset; +}; + +static const struct display_timing default_timing = { + .pixelclock.typ = 47250000, + .hactive.typ = 1024, + .hfront_porch.typ = 46, + .hback_porch.typ = 100, + .hsync_len.typ = 80, + .vactive.typ = 600, + .vfront_porch.typ = 5, + .vback_porch.typ = 20, + .vsync_len.typ = 5, + .flags = DISPLAY_FLAGS_HSYNC_HIGH | DISPLAY_FLAGS_VSYNC_HIGH, +}; + +static int tl070wsh30_panel_enable_backlight(struct udevice *dev) +{ + struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev); + struct mipi_dsi_device *device = plat->device; + struct tl070wsh30_panel_priv *priv = dev_get_priv(dev); + int ret; + + ret = mipi_dsi_attach(device); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_exit_sleep_mode(device); + if (ret) + return ret; + + mdelay(200); + + ret = mipi_dsi_dcs_set_display_on(device); + if (ret) + return ret; + + mdelay(20); + + ret = backlight_enable(priv->backlight); + if (ret) + return ret; + + return 0; +} + +static int tl070wsh30_panel_get_display_timing(struct udevice *dev, + struct display_timing *timings) +{ + memcpy(timings, &default_timing, sizeof(*timings)); + + return 0; +} + +static int tl070wsh30_panel_ofdata_to_platdata(struct udevice *dev) +{ + struct tl070wsh30_panel_priv *priv = dev_get_priv(dev); + int ret; + + if (IS_ENABLED(CONFIG_DM_REGULATOR)) { + ret = device_get_supply_regulator(dev, "power-supply", + &priv->reg); + if (ret && ret != -ENOENT) { + dev_err(dev, "Warning: cannot get power supply\n"); + return ret; + } + } + + ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset, + GPIOD_IS_OUT); + if (ret) { + dev_err(dev, "Warning: cannot get reset GPIO\n"); + if (ret != -ENOENT) + return ret; + } + + ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev, + "backlight", &priv->backlight); + if (ret) { + dev_err(dev, "Cannot get backlight: ret=%d\n", ret); + return ret; + } + + return 0; +} + +static int tl070wsh30_panel_probe(struct udevice *dev) +{ + struct tl070wsh30_panel_priv *priv = dev_get_priv(dev); + struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev); + int ret; + + if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) { + ret = regulator_set_enable(priv->reg, true); + if (ret) + return ret; + } + + mdelay(10); + + /* reset panel */ + dm_gpio_set_value(&priv->reset, true); + + mdelay(10); + + dm_gpio_set_value(&priv->reset, false); + + /* fill characteristics of DSI data link */ + plat->lanes = 4; + plat->format = MIPI_DSI_FMT_RGB888; + plat->mode_flags = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_MODE_LPM; + + return 0; +} + +static const struct panel_ops tl070wsh30_panel_ops = { + .enable_backlight = tl070wsh30_panel_enable_backlight, + .get_display_timing = tl070wsh30_panel_get_display_timing, +}; + +static const struct udevice_id tl070wsh30_panel_ids[] = { + { .compatible = "tdo,tl070wsh30" }, + { } +}; + +U_BOOT_DRIVER(tl070wsh30_panel) = { + .name = "tl070wsh30_panel", + .id = UCLASS_PANEL, + .of_match = tl070wsh30_panel_ids, + .ops = &tl070wsh30_panel_ops, + .ofdata_to_platdata = tl070wsh30_panel_ofdata_to_platdata, + .probe = tl070wsh30_panel_probe, + .platdata_auto_alloc_size = sizeof(struct mipi_dsi_panel_plat), + .priv_auto_alloc_size = sizeof(struct tl070wsh30_panel_priv), +}; |