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/*
* Generic PWM backlight driver data - see drivers/video/backlight/pwm_bl.c
*
* Copyright (c) 2013, NVIDIA CORPORATION, All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef __LINUX_PWM_BACKLIGHT_H
#define __LINUX_PWM_BACKLIGHT_H
#include <linux/backlight.h>
enum pwm_bl_edp_states {
PWM_BL_EDP_NEG_3,
PWM_BL_EDP_NEG_2,
PWM_BL_EDP_NEG_1,
PWM_BL_EDP_ZERO,
PWM_BL_EDP_1,
PWM_BL_EDP_2,
PWM_BL_EDP_3,
PWM_BL_EDP_4,
PWM_BL_EDP_5,
PWM_BL_EDP_6,
PWM_BL_EDP_NUM_STATES,
};
#define PWM_BL_EDP_BRIGHTNESS_UNIT 25
struct platform_pwm_backlight_data {
int pwm_id;
unsigned int max_brightness;
unsigned int dft_brightness;
unsigned int lth_brightness;
unsigned int pwm_period_ns;
unsigned int *levels;
unsigned int pwm_gpio;
int (*init)(struct device *dev);
int (*notify)(struct device *dev, int brightness);
void (*notify_after)(struct device *dev, int brightness);
void (*exit)(struct device *dev);
int (*check_fb)(struct device *dev, struct fb_info *info);
unsigned int *edp_states;
unsigned int *edp_brightness;
};
#endif
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