mirror of
https://github.com/AsahiLinux/u-boot
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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
139 lines
3.1 KiB
C
139 lines
3.1 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 <log.h>
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#include <video_bridge.h>
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#include <linux/delay.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 = 0;
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debug("%s: %d\n", __func__, active);
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if (uc_priv->sleep.dev) {
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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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}
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if (!active)
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return 0;
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if (uc_priv->reset.dev) {
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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 = sizeof(struct video_bridge_priv),
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.pre_probe = video_bridge_pre_probe,
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};
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