EXPORT_SYMBOL_GPL(led_trigger_show);
/* Caller must ensure led_cdev->trigger_lock held */
-void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trigger)
+void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
{
unsigned long flags;
if (led_cdev->trigger->deactivate)
led_cdev->trigger->deactivate(led_cdev);
led_cdev->trigger = NULL;
- led_brightness_set(led_cdev, LED_OFF);
+ led_set_brightness(led_cdev, LED_OFF);
}
- if (trigger) {
- write_lock_irqsave(&trigger->leddev_list_lock, flags);
- list_add_tail(&led_cdev->trig_list, &trigger->led_cdevs);
- write_unlock_irqrestore(&trigger->leddev_list_lock, flags);
- led_cdev->trigger = trigger;
- if (trigger->activate)
- trigger->activate(led_cdev);
+ if (trig) {
+ write_lock_irqsave(&trig->leddev_list_lock, flags);
+ list_add_tail(&led_cdev->trig_list, &trig->led_cdevs);
+ write_unlock_irqrestore(&trig->leddev_list_lock, flags);
+ led_cdev->trigger = trig;
+ if (trig->activate)
+ trig->activate(led_cdev);
}
}
EXPORT_SYMBOL_GPL(led_trigger_set);
/* LED Trigger Interface */
-int led_trigger_register(struct led_trigger *trigger)
+int led_trigger_register(struct led_trigger *trig)
{
struct led_classdev *led_cdev;
- struct led_trigger *trig;
+ struct led_trigger *_trig;
- rwlock_init(&trigger->leddev_list_lock);
- INIT_LIST_HEAD(&trigger->led_cdevs);
+ rwlock_init(&trig->leddev_list_lock);
+ INIT_LIST_HEAD(&trig->led_cdevs);
down_write(&triggers_list_lock);
/* Make sure the trigger's name isn't already in use */
- list_for_each_entry(trig, &trigger_list, next_trig) {
- if (!strcmp(trig->name, trigger->name)) {
+ list_for_each_entry(_trig, &trigger_list, next_trig) {
+ if (!strcmp(_trig->name, trig->name)) {
up_write(&triggers_list_lock);
return -EEXIST;
}
}
/* Add to the list of led triggers */
- list_add_tail(&trigger->next_trig, &trigger_list);
+ list_add_tail(&trig->next_trig, &trigger_list);
up_write(&triggers_list_lock);
/* Register with any LEDs that have this as a default trigger */
list_for_each_entry(led_cdev, &leds_list, node) {
down_write(&led_cdev->trigger_lock);
if (!led_cdev->trigger && led_cdev->default_trigger &&
- !strcmp(led_cdev->default_trigger, trigger->name))
- led_trigger_set(led_cdev, trigger);
+ !strcmp(led_cdev->default_trigger, trig->name))
+ led_trigger_set(led_cdev, trig);
up_write(&led_cdev->trigger_lock);
}
up_read(&leds_list_lock);
}
EXPORT_SYMBOL_GPL(led_trigger_register);
-void led_trigger_unregister(struct led_trigger *trigger)
+void led_trigger_unregister(struct led_trigger *trig)
{
struct led_classdev *led_cdev;
/* Remove from the list of led triggers */
down_write(&triggers_list_lock);
- list_del(&trigger->next_trig);
+ list_del(&trig->next_trig);
up_write(&triggers_list_lock);
/* Remove anyone actively using this trigger */
down_read(&leds_list_lock);
list_for_each_entry(led_cdev, &leds_list, node) {
down_write(&led_cdev->trigger_lock);
- if (led_cdev->trigger == trigger)
+ if (led_cdev->trigger == trig)
led_trigger_set(led_cdev, NULL);
up_write(&led_cdev->trigger_lock);
}
/* Simple LED Tigger Interface */
-void led_trigger_event(struct led_trigger *trigger,
+void led_trigger_event(struct led_trigger *trig,
enum led_brightness brightness)
{
struct list_head *entry;
- if (!trigger)
+ if (!trig)
return;
- read_lock(&trigger->leddev_list_lock);
- list_for_each(entry, &trigger->led_cdevs) {
+ read_lock(&trig->leddev_list_lock);
+ list_for_each(entry, &trig->led_cdevs) {
struct led_classdev *led_cdev;
led_cdev = list_entry(entry, struct led_classdev, trig_list);
led_set_brightness(led_cdev, brightness);
}
- read_unlock(&trigger->leddev_list_lock);
+ read_unlock(&trig->leddev_list_lock);
}
EXPORT_SYMBOL_GPL(led_trigger_event);
-void led_trigger_blink(struct led_trigger *trigger,
- unsigned long *delay_on,
- unsigned long *delay_off)
+static void led_trigger_blink_setup(struct led_trigger *trig,
+ unsigned long *delay_on,
+ unsigned long *delay_off,
+ int oneshot,
+ int invert)
{
struct list_head *entry;
- if (!trigger)
+ if (!trig)
return;
- read_lock(&trigger->leddev_list_lock);
- list_for_each(entry, &trigger->led_cdevs) {
+ read_lock(&trig->leddev_list_lock);
+ list_for_each(entry, &trig->led_cdevs) {
struct led_classdev *led_cdev;
led_cdev = list_entry(entry, struct led_classdev, trig_list);
- led_blink_set(led_cdev, delay_on, delay_off);
+ if (oneshot)
+ led_blink_set_oneshot(led_cdev, delay_on, delay_off,
+ invert);
+ else
+ led_blink_set(led_cdev, delay_on, delay_off);
}
- read_unlock(&trigger->leddev_list_lock);
+ read_unlock(&trig->leddev_list_lock);
+}
+
+void led_trigger_blink(struct led_trigger *trig,
+ unsigned long *delay_on,
+ unsigned long *delay_off)
+{
+ led_trigger_blink_setup(trig, delay_on, delay_off, 0, 0);
}
EXPORT_SYMBOL_GPL(led_trigger_blink);
+void led_trigger_blink_oneshot(struct led_trigger *trig,
+ unsigned long *delay_on,
+ unsigned long *delay_off,
+ int invert)
+{
+ led_trigger_blink_setup(trig, delay_on, delay_off, 1, invert);
+}
+EXPORT_SYMBOL_GPL(led_trigger_blink_oneshot);
+
void led_trigger_register_simple(const char *name, struct led_trigger **tp)
{
- struct led_trigger *trigger;
+ struct led_trigger *trig;
int err;
- trigger = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ trig = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
- if (trigger) {
- trigger->name = name;
- err = led_trigger_register(trigger);
+ if (trig) {
+ trig->name = name;
+ err = led_trigger_register(trig);
if (err < 0) {
- kfree(trigger);
- trigger = NULL;
+ kfree(trig);
+ trig = NULL;
printk(KERN_WARNING "LED trigger %s failed to register"
" (%d)\n", name, err);
}
printk(KERN_WARNING "LED trigger %s failed to register"
" (no memory)\n", name);
- *tp = trigger;
+ *tp = trig;
}
EXPORT_SYMBOL_GPL(led_trigger_register_simple);
-void led_trigger_unregister_simple(struct led_trigger *trigger)
+void led_trigger_unregister_simple(struct led_trigger *trig)
{
- if (trigger)
- led_trigger_unregister(trigger);
- kfree(trigger);
+ if (trig)
+ led_trigger_unregister(trig);
+ kfree(trig);
}
EXPORT_SYMBOL_GPL(led_trigger_unregister_simple);
projects / linux-2.6-block.git / blobdiff