u-boot/include/backlight.h
Simon Glass 401d1c4f5d common: Drop asm/global_data.h from common header
Move this out of the common header and include it only where needed.  In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly.   Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-02-02 15:33:42 -05:00

57 lines
1.2 KiB
C

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (c) 2016 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#ifndef _BACKLIGHT_H
#define _BACKLIGHT_H
struct udevice;
enum {
BACKLIGHT_MAX = 100,
BACKLIGHT_MIN = 0,
BACKLIGHT_OFF = -1,
BACKLIGHT_DEFAULT = -2,
};
struct backlight_ops {
/**
* enable() - Enable a backlight
*
* @dev: Backlight device to enable
* @return 0 if OK, -ve on error
*/
int (*enable)(struct udevice *dev);
/**
* set_brightness - Set brightness
*
* @dev: Backlight device to update
* @percent: Brightness value (0 to 100, or BACKLIGHT_... value)
* @return 0 if OK, -ve on error
*/
int (*set_brightness)(struct udevice *dev, int percent);
};
#define backlight_get_ops(dev) ((struct backlight_ops *)(dev)->driver->ops)
/**
* backlight_enable() - Enable a backlight
*
* @dev: Backlight device to enable
* @return 0 if OK, -ve on error
*/
int backlight_enable(struct udevice *dev);
/**
* backlight_set_brightness - Set brightness
*
* @dev: Backlight device to update
* @percent: Brightness value (0 to 100, or BACKLIGHT_... value)
* @return 0 if OK, -ve on error
*/
int backlight_set_brightness(struct udevice *dev, int percent);
#endif