2 * Generic PWM backlight driver data - see drivers/video/backlight/pwm_bl.c
4 #ifndef __LINUX_PWM_BACKLIGHT_H
5 #define __LINUX_PWM_BACKLIGHT_H
7 #include <linux/backlight.h>
9 /* TODO: convert to gpiod_*() API once it has been merged */
10 #define PWM_BACKLIGHT_GPIO_ACTIVE_LOW (1 << 0)
12 struct platform_pwm_backlight_data {
14 unsigned int max_brightness;
15 unsigned int dft_brightness;
16 unsigned int lth_brightness;
17 unsigned int pwm_period_ns;
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);