mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 00:47:26 +00:00
b953ec2bca
Define LOG_CATEGORY for all uclass to allow filtering with log command. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#define LOG_CATEGORY UCLASS_VIDEO_BRIDGE
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <edid.h>
|
|
#include <log.h>
|
|
#include <video_bridge.h>
|
|
#include <linux/delay.h>
|
|
|
|
int video_bridge_set_backlight(struct udevice *dev, int percent)
|
|
{
|
|
struct video_bridge_ops *ops = video_bridge_get_ops(dev);
|
|
|
|
if (!ops->set_backlight)
|
|
return -ENOSYS;
|
|
|
|
return ops->set_backlight(dev, percent);
|
|
}
|
|
|
|
int video_bridge_attach(struct udevice *dev)
|
|
{
|
|
struct video_bridge_ops *ops = video_bridge_get_ops(dev);
|
|
|
|
if (!ops->attach)
|
|
return -ENOSYS;
|
|
|
|
return ops->attach(dev);
|
|
}
|
|
|
|
int video_bridge_check_attached(struct udevice *dev)
|
|
{
|
|
struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
|
|
struct video_bridge_ops *ops = video_bridge_get_ops(dev);
|
|
int ret;
|
|
|
|
if (!ops->check_attached) {
|
|
ret = dm_gpio_get_value(&uc_priv->hotplug);
|
|
|
|
return ret > 0 ? 0 : ret == 0 ? -ENOTCONN : ret;
|
|
}
|
|
|
|
return ops->check_attached(dev);
|
|
}
|
|
|
|
int video_bridge_read_edid(struct udevice *dev, u8 *buf, int buf_size)
|
|
{
|
|
struct video_bridge_ops *ops = video_bridge_get_ops(dev);
|
|
|
|
if (!ops || !ops->read_edid)
|
|
return -ENOSYS;
|
|
return ops->read_edid(dev, buf, buf_size);
|
|
}
|
|
|
|
static int video_bridge_pre_probe(struct udevice *dev)
|
|
{
|
|
struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
|
|
int ret;
|
|
|
|
debug("%s\n", __func__);
|
|
ret = gpio_request_by_name(dev, "sleep-gpios", 0,
|
|
&uc_priv->sleep, GPIOD_IS_OUT);
|
|
if (ret) {
|
|
debug("%s: Could not decode sleep-gpios (%d)\n", __func__, ret);
|
|
if (ret != -ENOENT)
|
|
return ret;
|
|
}
|
|
/*
|
|
* Drop this for now as we do not have driver model pinctrl support
|
|
*
|
|
* ret = dm_gpio_set_pull(&uc_priv->sleep, GPIO_PULL_NONE);
|
|
* if (ret) {
|
|
* debug("%s: Could not set sleep pull value\n", __func__);
|
|
* return ret;
|
|
* }
|
|
*/
|
|
ret = gpio_request_by_name(dev, "reset-gpios", 0, &uc_priv->reset,
|
|
GPIOD_IS_OUT);
|
|
if (ret) {
|
|
debug("%s: Could not decode reset-gpios (%d)\n", __func__, ret);
|
|
if (ret != -ENOENT)
|
|
return ret;
|
|
}
|
|
/*
|
|
* Drop this for now as we do not have driver model pinctrl support
|
|
*
|
|
* ret = dm_gpio_set_pull(&uc_priv->reset, GPIO_PULL_NONE);
|
|
* if (ret) {
|
|
* debug("%s: Could not set reset pull value\n", __func__);
|
|
* return ret;
|
|
* }
|
|
*/
|
|
ret = gpio_request_by_name(dev, "hotplug-gpios", 0, &uc_priv->hotplug,
|
|
GPIOD_IS_IN);
|
|
if (ret) {
|
|
debug("%s: Could not decode hotplug (%d)\n", __func__, ret);
|
|
if (ret != -ENOENT)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int video_bridge_set_active(struct udevice *dev, bool active)
|
|
{
|
|
struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
|
|
int ret = 0;
|
|
|
|
debug("%s: %d\n", __func__, active);
|
|
if (uc_priv->sleep.dev) {
|
|
ret = dm_gpio_set_value(&uc_priv->sleep, !active);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (!active)
|
|
return 0;
|
|
|
|
if (uc_priv->reset.dev) {
|
|
ret = dm_gpio_set_value(&uc_priv->reset, true);
|
|
if (ret)
|
|
return ret;
|
|
udelay(10);
|
|
ret = dm_gpio_set_value(&uc_priv->reset, false);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
UCLASS_DRIVER(video_bridge) = {
|
|
.id = UCLASS_VIDEO_BRIDGE,
|
|
.name = "video_bridge",
|
|
.per_device_auto = sizeof(struct video_bridge_priv),
|
|
.pre_probe = video_bridge_pre_probe,
|
|
};
|