leds.h 1.2 KB

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  1. /*
  2. * LED Core
  3. *
  4. * Copyright 2005 Openedhand Ltd.
  5. *
  6. * Author: Richard Purdie <rpurdie@openedhand.com>
  7. *
  8. * This program is free software; you can redistribute it and/or modify
  9. * it under the terms of the GNU General Public License version 2 as
  10. * published by the Free Software Foundation.
  11. *
  12. */
  13. #ifndef __LEDS_H_INCLUDED
  14. #define __LEDS_H_INCLUDED
  15. #include <linux/leds.h>
  16. static inline void led_set_brightness(struct led_classdev *led_cdev,
  17. enum led_brightness value)
  18. {
  19. if (value > LED_FULL)
  20. value = LED_FULL;
  21. led_cdev->brightness = value;
  22. if (!(led_cdev->flags & LED_SUSPENDED))
  23. led_cdev->brightness_set(led_cdev, value);
  24. }
  25. extern rwlock_t leds_list_lock;
  26. extern struct list_head leds_list;
  27. #ifdef CONFIG_LEDS_TRIGGERS
  28. void led_trigger_set_default(struct led_classdev *led_cdev);
  29. void led_trigger_set(struct led_classdev *led_cdev,
  30. struct led_trigger *trigger);
  31. #else
  32. #define led_trigger_set_default(x) do {} while(0)
  33. #define led_trigger_set(x, y) do {} while(0)
  34. #endif
  35. ssize_t led_trigger_store(struct class_device *dev, const char *buf,
  36. size_t count);
  37. ssize_t led_trigger_show(struct class_device *dev, char *buf);
  38. #endif /* __LEDS_H_INCLUDED */