mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 06:06:15 +09:00
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>
105 lines
2.4 KiB
C
105 lines
2.4 KiB
C
/*
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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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* SPDX-License-Identifier: GPL-2.0+
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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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