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 29