/*
 * Generic PWM backlight driver data - see drivers/video/backlight/pwm_bl.c
 *
 * Copyright (c) 2013-2017, 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>


struct pwm_bl_data {
	struct pwm_device	*pwm;
	struct device		*dev;
	unsigned int		period;
	unsigned int		lth_brightness;
	unsigned int		*levels;
	bool			enabled;
	struct regulator	*power_supply;
	struct gpio_desc	*enable_gpio;
	unsigned int		scale;
	bool			legacy;
	unsigned int		pwm_gpio;
	u8			*bl_measured;
	int			(*notify)(struct device *,
					  int brightness);
	void			(*notify_after)(struct device *,
					int brightness);
	int			(*check_fb)(struct device *, struct fb_info *);
	void			(*exit)(struct device *);
};

struct pwm_bl_data_dt_ops {
	int (*init)(struct device *dev);
	int (*notify)(struct device *, int brightness);
	void (*notify_after)(struct device *, int brightness);
	int (*check_fb)(struct device *, struct fb_info *);
	void (*exit)(struct device *);
	const char *blnode_compatible;
};

struct platform_pwm_backlight_data {
	int pwm_id;
	const char *name;
	unsigned int max_brightness;
	unsigned int dft_brightness;
	unsigned int lth_brightness;
	unsigned int pwm_period_ns;
	unsigned int *levels;
	/* TODO remove once all users are switched to gpiod_* API */
	int enable_gpio;
	unsigned int pwm_gpio;
	u8 *bl_measured;
	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);
};

#endif