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https://github.com/brain-hackers/u-boot-brain
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a4f737a9c3
At present the panel can be turned on but not off, and the brightness cannot be controlled at run-time. Add a new API function to both the panel and backlight uclasses to handle this. Enhance the PWM backlight driver to deal with custom levels properly and allow the backlight to be turned on and off. Update the test to cover thes new features. Signed-off-by: Simon Glass <sjg@chromium.org>
54 lines
1.1 KiB
C
54 lines
1.1 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 <dm.h>
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#include <panel.h>
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int panel_enable_backlight(struct udevice *dev)
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{
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struct panel_ops *ops = panel_get_ops(dev);
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if (!ops->enable_backlight)
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return -ENOSYS;
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return ops->enable_backlight(dev);
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}
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/**
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* panel_set_backlight - Set brightness for the panel backlight
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*
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* @dev: Panel device containing the backlight to update
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* @percent: Brightness value (0=off, 1=min brightness,
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* 100=full brightness)
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* @return 0 if OK, -ve on error
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*/
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int panel_set_backlight(struct udevice *dev, int percent)
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{
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struct panel_ops *ops = panel_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 panel_get_display_timing(struct udevice *dev,
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struct display_timing *timings)
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{
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struct panel_ops *ops = panel_get_ops(dev);
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if (!ops->get_display_timing)
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return -ENOSYS;
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return ops->get_display_timing(dev, timings);
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}
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UCLASS_DRIVER(panel) = {
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.id = UCLASS_PANEL,
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.name = "panel",
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};
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