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/*
* PWM LED driver data - see drivers/leds/leds-pwm.c
*/
#ifndef __LINUX_LEDS_PWM_H
#define __LINUX_LEDS_PWM_H
struct led_pwm {
const char *name;
const char *default_trigger;
unsigned pwm_id;
u8 active_low;
unsigned max_brightness;
unsigned pwm_period_ns;
};
struct led_pwm_platform_data {
int num_leds;
struct led_pwm *leds;
/* @init: The init callback is called after the pwm device for a led has
* been successfully configured. If the return value is negative it will be
* seen as an error and initzalisation of the leds-pwm device will fail.
*/
int (*init)(struct device *dev, struct led_pwm *led);
/* @notify: The notify callback is called whenever the brightness of a led
* is changed.
* The return value of the callback will be the brightness which is used to
* configure the pwm device.
*/
enum led_brightness (*notify)(struct device *dev, struct led_pwm *led,
enum led_brightness brightness);
/* @exit: The exit callback is called, whenever a led device registered by
* the leds-pwm device is unregistered. It will be called prior to freeing
* the pwm device.
*/
void (*exit)(struct device *dev, struct led_pwm *led);
};
#endif
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