mirror of
https://github.com/brain-hackers/u-boot-brain
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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>
123 lines
3.0 KiB
C
123 lines
3.0 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 <log.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_set_backlight(struct udevice *dev, int percent)
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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_set_brightness(priv->backlight, percent);
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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 log_ret(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 log_ret(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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.set_backlight = simple_panel_set_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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{ .compatible = "boe,nv140fhmn49" },
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{ .compatible = "lg,lb070wv8" },
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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 = sizeof(struct simple_panel_priv),
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};
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