diff options
Diffstat (limited to 'drivers/leds/leds.h')
| -rw-r--r-- | drivers/leds/leds.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h new file mode 100644 index 00000000..e77c7f8d --- /dev/null +++ b/drivers/leds/leds.h @@ -0,0 +1,61 @@ +/* + * LED Core + * + * Copyright 2005 Openedhand Ltd. + * + * Author: Richard Purdie <rpurdie@openedhand.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ +#ifndef __LEDS_H_INCLUDED +#define __LEDS_H_INCLUDED + +#include <linux/device.h> +#include <linux/rwsem.h> +#include <linux/leds.h> + +static inline void led_set_brightness(struct led_classdev *led_cdev, + enum led_brightness value) +{ + if (value > led_cdev->max_brightness) + value = led_cdev->max_brightness; + led_cdev->brightness = value; + if (!(led_cdev->flags & LED_SUSPENDED)) + led_cdev->brightness_set(led_cdev, value); +} + +static inline int led_get_brightness(struct led_classdev *led_cdev) +{ + return led_cdev->brightness; +} + +extern struct rw_semaphore leds_list_lock; +extern struct list_head leds_list; + +#ifdef CONFIG_LEDS_TRIGGERS +void led_trigger_set_default(struct led_classdev *led_cdev); +void led_trigger_set(struct led_classdev *led_cdev, + struct led_trigger *trigger); +void led_trigger_remove(struct led_classdev *led_cdev); + +static inline void *led_get_trigger_data(struct led_classdev *led_cdev) +{ + return led_cdev->trigger_data; +} + +#else +#define led_trigger_set_default(x) do {} while (0) +#define led_trigger_set(x, y) do {} while (0) +#define led_trigger_remove(x) do {} while (0) +#define led_get_trigger_data(x) (NULL) +#endif + +ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count); +ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr, + char *buf); + +#endif /* __LEDS_H_INCLUDED */ |