2 * Copyright (C) 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
11 #include <video_bridge.h>
13 int video_bridge_set_backlight(struct udevice *dev, int percent)
15 struct video_bridge_ops *ops = video_bridge_get_ops(dev);
17 if (!ops->set_backlight)
20 return ops->set_backlight(dev, percent);
23 int video_bridge_attach(struct udevice *dev)
25 struct video_bridge_ops *ops = video_bridge_get_ops(dev);
30 return ops->attach(dev);
33 int video_bridge_check_attached(struct udevice *dev)
35 struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
36 struct video_bridge_ops *ops = video_bridge_get_ops(dev);
39 if (!ops->check_attached) {
40 ret = dm_gpio_get_value(&uc_priv->hotplug);
42 return ret > 0 ? 0 : ret == 0 ? -ENOTCONN : ret;
45 return ops->check_attached(dev);
48 static int video_bridge_pre_probe(struct udevice *dev)
50 struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
53 debug("%s\n", __func__);
54 ret = gpio_request_by_name(dev, "sleep-gpios", 0,
55 &uc_priv->sleep, GPIOD_IS_OUT);
57 debug("%s: Could not decode sleep-gpios (%d)\n", __func__, ret);
61 * Drop this for now as we do not have driver model pinctrl support
63 * ret = dm_gpio_set_pull(&uc_priv->sleep, GPIO_PULL_NONE);
65 * debug("%s: Could not set sleep pull value\n", __func__);
69 ret = gpio_request_by_name(dev, "reset-gpios", 0, &uc_priv->reset,
72 debug("%s: Could not decode reset-gpios (%d)\n", __func__, ret);
76 * Drop this for now as we do not have driver model pinctrl support
78 * ret = dm_gpio_set_pull(&uc_priv->reset, GPIO_PULL_NONE);
80 * debug("%s: Could not set reset pull value\n", __func__);
84 ret = gpio_request_by_name(dev, "hotplug-gpios", 0, &uc_priv->hotplug,
86 if (ret && ret != -ENOENT) {
87 debug("%s: Could not decode hotplug (%d)\n", __func__, ret);
94 int video_bridge_set_active(struct udevice *dev, bool active)
96 struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
99 debug("%s: %d\n", __func__, active);
100 ret = dm_gpio_set_value(&uc_priv->sleep, !active);
104 ret = dm_gpio_set_value(&uc_priv->reset, true);
108 ret = dm_gpio_set_value(&uc_priv->reset, false);
114 UCLASS_DRIVER(video_bridge) = {
115 .id = UCLASS_VIDEO_BRIDGE,
116 .name = "video_bridge",
117 .per_device_auto_alloc_size = sizeof(struct video_bridge_priv),
118 .pre_probe = video_bridge_pre_probe,