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https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
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>
104 lines
2.4 KiB
C
104 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2016 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 <backlight.h>
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#include <dm.h>
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#include <panel.h>
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#include <asm/gpio.h>
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#include <power/regulator.h>
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struct simple_panel_priv {
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struct udevice *reg;
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struct udevice *backlight;
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struct gpio_desc enable;
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};
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static int simple_panel_enable_backlight(struct udevice *dev)
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{
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struct simple_panel_priv *priv = dev_get_priv(dev);
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int ret;
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debug("%s: start, backlight = '%s'\n", __func__, priv->backlight->name);
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dm_gpio_set_value(&priv->enable, 1);
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ret = backlight_enable(priv->backlight);
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debug("%s: done, ret = %d\n", __func__, ret);
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if (ret)
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return ret;
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return 0;
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}
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static int simple_panel_ofdata_to_platdata(struct udevice *dev)
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{
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struct simple_panel_priv *priv = dev_get_priv(dev);
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int ret;
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if (IS_ENABLED(CONFIG_DM_REGULATOR)) {
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ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
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"power-supply", &priv->reg);
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if (ret) {
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debug("%s: Warning: cannot get power supply: ret=%d\n",
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__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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ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
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"backlight", &priv->backlight);
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if (ret) {
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debug("%s: Cannot get backlight: ret=%d\n", __func__, ret);
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return ret;
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}
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ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable,
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GPIOD_IS_OUT);
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if (ret) {
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debug("%s: Warning: cannot get enable GPIO: ret=%d\n",
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__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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static int simple_panel_probe(struct udevice *dev)
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{
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struct simple_panel_priv *priv = dev_get_priv(dev);
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int ret;
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if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) {
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debug("%s: Enable regulator '%s'\n", __func__, priv->reg->name);
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ret = regulator_set_enable(priv->reg, true);
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if (ret)
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return ret;
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}
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return 0;
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}
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static const struct panel_ops simple_panel_ops = {
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.enable_backlight = simple_panel_enable_backlight,
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};
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static const struct udevice_id simple_panel_ids[] = {
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{ .compatible = "simple-panel" },
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{ .compatible = "auo,b133xtn01" },
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{ .compatible = "auo,b116xw03" },
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{ .compatible = "auo,b133htn01" },
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{ }
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};
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U_BOOT_DRIVER(simple_panel) = {
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.name = "simple_panel",
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.id = UCLASS_PANEL,
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.of_match = simple_panel_ids,
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.ops = &simple_panel_ops,
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.ofdata_to_platdata = simple_panel_ofdata_to_platdata,
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.probe = simple_panel_probe,
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.priv_auto_alloc_size = sizeof(struct simple_panel_priv),
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};
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