include/linux/pwm_backlight.h

   1 /*
   2  * Generic PWM backlight driver data - see drivers/video/backlight/pwm_bl.c
   3  */
   4 #ifndef __LINUX_PWM_BACKLIGHT_H
   5 #define __LINUX_PWM_BACKLIGHT_H
   6
   7 #include <linux/backlight.h>
   8
   9 /* TODO: convert to gpiod_*() API once it has been merged */
  10 #define PWM_BACKLIGHT_GPIO_ACTIVE_LOW   (1 << 0)
  11
  12 struct platform_pwm_backlight_data {
  13         int pwm_id;
  14         unsigned int max_brightness;
  15         unsigned int dft_brightness;
  16         unsigned int lth_brightness;
  17         unsigned int pwm_period_ns;
  18         unsigned int *levels;
  19         int enable_gpio;
  20         unsigned long enable_gpio_flags;
  21         int (*init)(struct device *dev);
  22         int (*notify)(struct device *dev, int brightness);
  23         void (*notify_after)(struct device *dev, int brightness);
  24         void (*exit)(struct device *dev);
  25         int (*check_fb)(struct device *dev, struct fb_info *info);
  26 };
  27
  28 #endif