/*
   * Generic PWM backlight driver data - see drivers/video/backlight/pwm_bl.c
   */
  #ifndef __LINUX_PWM_BACKLIGHT_H
  #define __LINUX_PWM_BACKLIGHT_H

  #include <linux/backlight.h>

  /* TODO: convert to gpiod_*() API once it has been merged */
  #define PWM_BACKLIGHT_GPIO_ACTIVE_LOW	(1 << 0)

  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;

  	int enable_gpio;
  	unsigned long enable_gpio_flags;

  	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