#include <linux/sysdev.h>
#include <linux/timer.h>
#include <linux/err.h>
+#include <linux/ctype.h>
#include <linux/leds.h>
#include "leds.h"
ssize_t ret = -EINVAL;
char *after;
unsigned long state = simple_strtoul(buf, &after, 10);
+ size_t count = after - buf;
- if (after - buf > 0) {
- ret = after - buf;
+ if (*after && isspace(*after))
+ count++;
+
+ if (count == size) {
+ ret = count;
led_set_brightness(led_cdev, state);
}
static CLASS_DEVICE_ATTR(brightness, 0644, led_brightness_show,
led_brightness_store);
+#ifdef CONFIG_LEDS_TRIGGERS
+static CLASS_DEVICE_ATTR(trigger, 0644, led_trigger_show, led_trigger_store);
+#endif
/**
* led_classdev_suspend - suspend an led_classdev.
list_add_tail(&led_cdev->node, &leds_list);
write_unlock(&leds_list_lock);
+#ifdef CONFIG_LEDS_TRIGGERS
+ rwlock_init(&led_cdev->trigger_lock);
+
+ led_trigger_set_default(led_cdev);
+
+ class_device_create_file(led_cdev->class_dev,
+ &class_device_attr_trigger);
+#endif
+
printk(KERN_INFO "Registered led device: %s\n",
led_cdev->class_dev->class_id);
{
class_device_remove_file(led_cdev->class_dev,
&class_device_attr_brightness);
+#ifdef CONFIG_LEDS_TRIGGERS
+ class_device_remove_file(led_cdev->class_dev,
+ &class_device_attr_trigger);
+ write_lock(&led_cdev->trigger_lock);
+ if (led_cdev->trigger)
+ led_trigger_set(led_cdev, NULL);
+ write_unlock(&led_cdev->trigger_lock);
+#endif
class_device_unregister(led_cdev->class_dev);