1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Copyright (c) 2016 Google, Inc 3*4882a593Smuzhiyun * Written by Simon Glass <sjg@chromium.org> 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef _BACKLIGHT_H 9*4882a593Smuzhiyun #define _BACKLIGHT_H 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun struct backlight_ops { 12*4882a593Smuzhiyun /** 13*4882a593Smuzhiyun * enable() - Enable a backlight 14*4882a593Smuzhiyun * 15*4882a593Smuzhiyun * @dev: Backlight device to enable 16*4882a593Smuzhiyun * @return 0 if OK, -ve on error 17*4882a593Smuzhiyun */ 18*4882a593Smuzhiyun int (*enable)(struct udevice *dev); 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun /** 21*4882a593Smuzhiyun * disable() - Disable a backlight 22*4882a593Smuzhiyun * 23*4882a593Smuzhiyun * @dev: Backlight device to disable 24*4882a593Smuzhiyun * @return 0 if OK, -ve on error 25*4882a593Smuzhiyun */ 26*4882a593Smuzhiyun int (*disable)(struct udevice *dev); 27*4882a593Smuzhiyun }; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun #define backlight_get_ops(dev) ((struct backlight_ops *)(dev)->driver->ops) 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun /** 32*4882a593Smuzhiyun * backlight_enable() - Enable a backlight 33*4882a593Smuzhiyun * 34*4882a593Smuzhiyun * @dev: Backlight device to enable 35*4882a593Smuzhiyun * @return 0 if OK, -ve on error 36*4882a593Smuzhiyun */ 37*4882a593Smuzhiyun int backlight_enable(struct udevice *dev); 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun /** 40*4882a593Smuzhiyun * backlight_disable() - Disable a backlight 41*4882a593Smuzhiyun * 42*4882a593Smuzhiyun * @dev: Backlight device to disable 43*4882a593Smuzhiyun * @return 0 if OK, -ve on error 44*4882a593Smuzhiyun */ 45*4882a593Smuzhiyun int backlight_disable(struct udevice *dev); 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun #endif 48