d024236e5a
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
/*
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* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
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* Author: Patrick Delaunay <patrick.delaunay@st.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <backlight.h>
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#include <asm/gpio.h>
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struct gpio_backlight_priv {
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struct gpio_desc gpio;
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bool def_value;
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};
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static int gpio_backlight_enable(struct udevice *dev)
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{
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struct gpio_backlight_priv *priv = dev_get_priv(dev);
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dm_gpio_set_value(&priv->gpio, 1);
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return 0;
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}
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static int gpio_backlight_ofdata_to_platdata(struct udevice *dev)
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{
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struct gpio_backlight_priv *priv = dev_get_priv(dev);
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int ret;
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ret = gpio_request_by_name(dev, "gpios", 0, &priv->gpio,
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GPIOD_IS_OUT);
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if (ret) {
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debug("%s: Warning: cannot get GPIO: ret=%d\n",
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__func__, ret);
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return ret;
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}
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priv->def_value = dev_read_bool(dev, "default-on");
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return 0;
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}
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static int gpio_backlight_probe(struct udevice *dev)
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{
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struct gpio_backlight_priv *priv = dev_get_priv(dev);
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if (priv->def_value)
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gpio_backlight_enable(dev);
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return 0;
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}
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static const struct backlight_ops gpio_backlight_ops = {
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.enable = gpio_backlight_enable,
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};
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static const struct udevice_id gpio_backlight_ids[] = {
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{ .compatible = "gpio-backlight" },
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{ }
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};
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U_BOOT_DRIVER(gpio_backlight) = {
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.name = "gpio_backlight",
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.id = UCLASS_PANEL_BACKLIGHT,
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.of_match = gpio_backlight_ids,
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.ops = &gpio_backlight_ops,
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.ofdata_to_platdata = gpio_backlight_ofdata_to_platdata,
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.probe = gpio_backlight_probe,
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.priv_auto_alloc_size = sizeof(struct gpio_backlight_priv),
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};
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