1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
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 int video_bridge_read_edid(struct udevice *dev, u8 *buf, int buf_size)
50 struct video_bridge_ops *ops = video_bridge_get_ops(dev);
52 if (!ops || !ops->read_edid)
54 return ops->read_edid(dev, buf, buf_size);
57 static int video_bridge_pre_probe(struct udevice *dev)
59 struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
62 debug("%s\n", __func__);
63 ret = gpio_request_by_name(dev, "sleep-gpios", 0,
64 &uc_priv->sleep, GPIOD_IS_OUT);
66 debug("%s: Could not decode sleep-gpios (%d)\n", __func__, ret);
71 * Drop this for now as we do not have driver model pinctrl support
73 * ret = dm_gpio_set_pull(&uc_priv->sleep, GPIO_PULL_NONE);
75 * debug("%s: Could not set sleep pull value\n", __func__);
79 ret = gpio_request_by_name(dev, "reset-gpios", 0, &uc_priv->reset,
82 debug("%s: Could not decode reset-gpios (%d)\n", __func__, ret);
87 * Drop this for now as we do not have driver model pinctrl support
89 * ret = dm_gpio_set_pull(&uc_priv->reset, GPIO_PULL_NONE);
91 * debug("%s: Could not set reset pull value\n", __func__);
95 ret = gpio_request_by_name(dev, "hotplug-gpios", 0, &uc_priv->hotplug,
98 debug("%s: Could not decode hotplug (%d)\n", __func__, ret);
106 int video_bridge_set_active(struct udevice *dev, bool active)
108 struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
111 debug("%s: %d\n", __func__, active);
112 ret = dm_gpio_set_value(&uc_priv->sleep, !active);
116 ret = dm_gpio_set_value(&uc_priv->reset, true);
120 ret = dm_gpio_set_value(&uc_priv->reset, false);
126 UCLASS_DRIVER(video_bridge) = {
127 .id = UCLASS_VIDEO_BRIDGE,
128 .name = "video_bridge",
129 .per_device_auto_alloc_size = sizeof(struct video_bridge_priv),
130 .pre_probe = video_bridge_pre_probe,