mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-11 05:36:17 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <edid.h>
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#include <video_bridge.h>
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int video_bridge_set_backlight(struct udevice *dev, int percent)
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{
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struct video_bridge_ops *ops = video_bridge_get_ops(dev);
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if (!ops->set_backlight)
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return -ENOSYS;
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return ops->set_backlight(dev, percent);
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}
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int video_bridge_attach(struct udevice *dev)
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{
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struct video_bridge_ops *ops = video_bridge_get_ops(dev);
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if (!ops->attach)
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return -ENOSYS;
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return ops->attach(dev);
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}
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int video_bridge_check_attached(struct udevice *dev)
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{
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struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
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struct video_bridge_ops *ops = video_bridge_get_ops(dev);
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int ret;
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if (!ops->check_attached) {
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ret = dm_gpio_get_value(&uc_priv->hotplug);
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return ret > 0 ? 0 : ret == 0 ? -ENOTCONN : ret;
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}
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return ops->check_attached(dev);
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}
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int video_bridge_read_edid(struct udevice *dev, u8 *buf, int buf_size)
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{
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struct video_bridge_ops *ops = video_bridge_get_ops(dev);
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if (!ops || !ops->read_edid)
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return -ENOSYS;
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return ops->read_edid(dev, buf, buf_size);
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}
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static int video_bridge_pre_probe(struct udevice *dev)
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{
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struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
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int ret;
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debug("%s\n", __func__);
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ret = gpio_request_by_name(dev, "sleep-gpios", 0,
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&uc_priv->sleep, GPIOD_IS_OUT);
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if (ret) {
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debug("%s: Could not decode sleep-gpios (%d)\n", __func__, ret);
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if (ret != -ENOENT)
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return ret;
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}
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/*
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* Drop this for now as we do not have driver model pinctrl support
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*
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* ret = dm_gpio_set_pull(&uc_priv->sleep, GPIO_PULL_NONE);
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* if (ret) {
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* debug("%s: Could not set sleep pull value\n", __func__);
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* return ret;
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* }
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*/
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ret = gpio_request_by_name(dev, "reset-gpios", 0, &uc_priv->reset,
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GPIOD_IS_OUT);
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if (ret) {
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debug("%s: Could not decode reset-gpios (%d)\n", __func__, ret);
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if (ret != -ENOENT)
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return ret;
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}
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/*
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* Drop this for now as we do not have driver model pinctrl support
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*
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* ret = dm_gpio_set_pull(&uc_priv->reset, GPIO_PULL_NONE);
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* if (ret) {
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* debug("%s: Could not set reset pull value\n", __func__);
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* return ret;
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* }
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*/
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ret = gpio_request_by_name(dev, "hotplug-gpios", 0, &uc_priv->hotplug,
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GPIOD_IS_IN);
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if (ret) {
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debug("%s: Could not decode hotplug (%d)\n", __func__, ret);
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if (ret != -ENOENT)
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return ret;
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}
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return 0;
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}
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int video_bridge_set_active(struct udevice *dev, bool active)
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{
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struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
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int ret;
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debug("%s: %d\n", __func__, active);
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ret = dm_gpio_set_value(&uc_priv->sleep, !active);
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if (ret)
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return ret;
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if (active) {
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ret = dm_gpio_set_value(&uc_priv->reset, true);
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if (ret)
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return ret;
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udelay(10);
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ret = dm_gpio_set_value(&uc_priv->reset, false);
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}
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return ret;
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}
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UCLASS_DRIVER(video_bridge) = {
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.id = UCLASS_VIDEO_BRIDGE,
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.name = "video_bridge",
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.per_device_auto_alloc_size = sizeof(struct video_bridge_priv),
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.pre_probe = video_bridge_pre_probe,
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};
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