mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-13 08:27:23 +00:00
bb5930d5c9
Update several boards to use driver model for video. This involves changes to the EDP and FIMD (frame buffer) drivers. Existing PWM, simple-panel and pwm-backlight drivers are used. These work without additional configuration since they use the device tree settings in the same way as Linux. Boards converted are: - snow - spring - peach-pit - peach-pi All have been tested. Not converted: - MIPI display driver - s5pc210_universal - smdk5420 - smdk5250 - trats - trats2 Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2016 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <backlight.h>
|
|
#include <dm.h>
|
|
#include <panel.h>
|
|
#include <asm/gpio.h>
|
|
#include <power/regulator.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
struct simple_panel_priv {
|
|
struct udevice *reg;
|
|
struct udevice *backlight;
|
|
struct gpio_desc enable;
|
|
};
|
|
|
|
static int simple_panel_enable_backlight(struct udevice *dev)
|
|
{
|
|
struct simple_panel_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
dm_gpio_set_value(&priv->enable, 1);
|
|
ret = backlight_enable(priv->backlight);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int simple_panel_ofdata_to_platdata(struct udevice *dev)
|
|
{
|
|
struct simple_panel_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
if (IS_ENABLED(CONFIG_DM_REGULATOR)) {
|
|
ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
|
|
"power-supply", &priv->reg);
|
|
if (ret) {
|
|
debug("%s: Warning: cnnot get power supply: ret=%d\n",
|
|
__func__, ret);
|
|
if (ret != -ENOENT)
|
|
return ret;
|
|
}
|
|
}
|
|
ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
|
|
"backlight", &priv->backlight);
|
|
if (ret) {
|
|
debug("%s: Cannot get backlight: ret=%d\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable,
|
|
GPIOD_IS_OUT);
|
|
if (ret) {
|
|
debug("%s: Warning: cannot get enable GPIO: ret=%d\n",
|
|
__func__, ret);
|
|
if (ret != -ENOENT)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int simple_panel_probe(struct udevice *dev)
|
|
{
|
|
struct simple_panel_priv *priv = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) {
|
|
debug("%s: Enable regulator '%s'\n", __func__, priv->reg->name);
|
|
ret = regulator_set_enable(priv->reg, true);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct panel_ops simple_panel_ops = {
|
|
.enable_backlight = simple_panel_enable_backlight,
|
|
};
|
|
|
|
static const struct udevice_id simple_panel_ids[] = {
|
|
{ .compatible = "simple-panel" },
|
|
{ .compatible = "auo,b133xtn01" },
|
|
{ .compatible = "auo,b116xw03" },
|
|
{ .compatible = "auo,b133htn01" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(simple_panel) = {
|
|
.name = "simple_panel",
|
|
.id = UCLASS_PANEL,
|
|
.of_match = simple_panel_ids,
|
|
.ops = &simple_panel_ops,
|
|
.ofdata_to_platdata = simple_panel_ofdata_to_platdata,
|
|
.probe = simple_panel_probe,
|
|
.priv_auto_alloc_size = sizeof(struct simple_panel_priv),
|
|
};
|