mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 07:16:04 +09:00
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>
69 lines
1.8 KiB
C
69 lines
1.8 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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#ifndef _PANEL_H
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#define _PANEL_H
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struct panel_ops {
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/**
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* enable_backlight() - Enable the panel backlight
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*
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* @dev: Panel device containing the backlight to enable
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* @return 0 if OK, -ve on error
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*/
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int (*enable_backlight)(struct udevice *dev);
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/**
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* set_backlight - Set panel backlight brightness
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*
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* @dev: Panel device containing the backlight to update
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* @percent: Brightness value (0 to 100, or BACKLIGHT_... value)
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* @return 0 if OK, -ve on error
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*/
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int (*set_backlight)(struct udevice *dev, int percent);
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/**
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* get_timings() - Get display timings from panel.
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*
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* @dev: Panel device containing the display timings
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* @tim: Place to put timings
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* @return 0 if OK, -ve on error
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*/
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int (*get_display_timing)(struct udevice *dev,
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struct display_timing *timing);
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};
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#define panel_get_ops(dev) ((struct panel_ops *)(dev)->driver->ops)
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/**
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* panel_enable_backlight() - Enable/disable the panel backlight
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*
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* @dev: Panel device containing the backlight to enable
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* @enable: true to enable the backlight, false to dis
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* @return 0 if OK, -ve on error
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*/
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int panel_enable_backlight(struct udevice *dev);
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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 to 100, or BACKLIGHT_... value)
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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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* panel_get_display_timing() - Get display timings from panel.
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*
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* @dev: Panel device containing the display timings
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* @return 0 if OK, -ve on error
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*/
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int panel_get_display_timing(struct udevice *dev,
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struct display_timing *timing);
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#endif
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