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authorLinus Torvalds <torvalds@linux-foundation.org>2008-04-25 12:48:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-25 12:48:44 -0700
commiteb855fd8e7f6b1d8b50f24aa36803e29b367b041 (patch)
tree0d6606a4285f3312c9fd9d7507203c9b095e5443 /drivers/leds/led-triggers.c
parentbf16ae250999e76aff0491a362073a552db965fc (diff)
parent060856c799191ffc360105cac49f3f9e68d526b7 (diff)
Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds: leds: Add default-on trigger leds: Document the context brightness_set needs leds: Add new driver for the LEDs on the Freecom FSG-3 leds: Add support to leds with readable status leds: enable support for blink_set() platform hook in leds-gpio leds: Cleanup various whitespace and code style issues leds: disable triggers on brightness set leds: Add mail LED support for "Clevo D400P"
Diffstat (limited to 'drivers/leds/led-triggers.c')
-rw-r--r--drivers/leds/led-triggers.c120
1 files changed, 63 insertions, 57 deletions
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 13c9026d68a..0f242b3f09b 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -29,6 +29,8 @@
static DECLARE_RWSEM(triggers_list_lock);
static LIST_HEAD(trigger_list);
+ /* Used by LED Class */
+
ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
@@ -45,9 +47,7 @@ ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
trigger_name[len - 1] = '\0';
if (!strcmp(trigger_name, "none")) {
- down_write(&led_cdev->trigger_lock);
- led_trigger_set(led_cdev, NULL);
- up_write(&led_cdev->trigger_lock);
+ led_trigger_remove(led_cdev);
return count;
}
@@ -66,7 +66,7 @@ ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
return -EINVAL;
}
-
+EXPORT_SYMBOL_GPL(led_trigger_store);
ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
char *buf)
@@ -96,24 +96,7 @@ ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
len += sprintf(len+buf, "\n");
return len;
}
-
-void led_trigger_event(struct led_trigger *trigger,
- enum led_brightness brightness)
-{
- struct list_head *entry;
-
- if (!trigger)
- return;
-
- read_lock(&trigger->leddev_list_lock);
- list_for_each(entry, &trigger->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);
-}
+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)
@@ -124,7 +107,8 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trigger)
if (led_cdev->trigger) {
write_lock_irqsave(&led_cdev->trigger->leddev_list_lock, flags);
list_del(&led_cdev->trig_list);
- write_unlock_irqrestore(&led_cdev->trigger->leddev_list_lock, flags);
+ write_unlock_irqrestore(&led_cdev->trigger->leddev_list_lock,
+ flags);
if (led_cdev->trigger->deactivate)
led_cdev->trigger->deactivate(led_cdev);
led_set_brightness(led_cdev, LED_OFF);
@@ -138,6 +122,15 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trigger)
}
led_cdev->trigger = trigger;
}
+EXPORT_SYMBOL_GPL(led_trigger_set);
+
+void led_trigger_remove(struct led_classdev *led_cdev)
+{
+ down_write(&led_cdev->trigger_lock);
+ led_trigger_set(led_cdev, NULL);
+ up_write(&led_cdev->trigger_lock);
+}
+EXPORT_SYMBOL_GPL(led_trigger_remove);
void led_trigger_set_default(struct led_classdev *led_cdev)
{
@@ -155,6 +148,9 @@ void led_trigger_set_default(struct led_classdev *led_cdev)
up_write(&led_cdev->trigger_lock);
up_read(&triggers_list_lock);
}
+EXPORT_SYMBOL_GPL(led_trigger_set_default);
+
+/* LED Trigger Interface */
int led_trigger_register(struct led_trigger *trigger)
{
@@ -181,26 +177,7 @@ int led_trigger_register(struct led_trigger *trigger)
return 0;
}
-
-void led_trigger_register_simple(const char *name, struct led_trigger **tp)
-{
- struct led_trigger *trigger;
- int err;
-
- trigger = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
-
- if (trigger) {
- trigger->name = name;
- err = led_trigger_register(trigger);
- if (err < 0)
- printk(KERN_WARNING "LED trigger %s failed to register"
- " (%d)\n", name, err);
- } else
- printk(KERN_WARNING "LED trigger %s failed to register"
- " (no memory)\n", name);
-
- *tp = trigger;
-}
+EXPORT_SYMBOL_GPL(led_trigger_register);
void led_trigger_unregister(struct led_trigger *trigger)
{
@@ -221,6 +198,49 @@ void led_trigger_unregister(struct led_trigger *trigger)
}
up_read(&leds_list_lock);
}
+EXPORT_SYMBOL_GPL(led_trigger_unregister);
+
+/* Simple LED Tigger Interface */
+
+void led_trigger_event(struct led_trigger *trigger,
+ enum led_brightness brightness)
+{
+ struct list_head *entry;
+
+ if (!trigger)
+ return;
+
+ read_lock(&trigger->leddev_list_lock);
+ list_for_each(entry, &trigger->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);
+}
+EXPORT_SYMBOL_GPL(led_trigger_event);
+
+void led_trigger_register_simple(const char *name, struct led_trigger **tp)
+{
+ struct led_trigger *trigger;
+ int err;
+
+ trigger = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+
+ if (trigger) {
+ trigger->name = name;
+ err = led_trigger_register(trigger);
+ if (err < 0)
+ printk(KERN_WARNING "LED trigger %s failed to register"
+ " (%d)\n", name, err);
+ } else
+ printk(KERN_WARNING "LED trigger %s failed to register"
+ " (no memory)\n", name);
+
+ *tp = trigger;
+}
+EXPORT_SYMBOL_GPL(led_trigger_register_simple);
void led_trigger_unregister_simple(struct led_trigger *trigger)
{
@@ -228,21 +248,7 @@ void led_trigger_unregister_simple(struct led_trigger *trigger)
led_trigger_unregister(trigger);
kfree(trigger);
}
-
-/* Used by LED Class */
-EXPORT_SYMBOL_GPL(led_trigger_set);
-EXPORT_SYMBOL_GPL(led_trigger_set_default);
-EXPORT_SYMBOL_GPL(led_trigger_show);
-EXPORT_SYMBOL_GPL(led_trigger_store);
-
-/* LED Trigger Interface */
-EXPORT_SYMBOL_GPL(led_trigger_register);
-EXPORT_SYMBOL_GPL(led_trigger_unregister);
-
-/* Simple LED Tigger Interface */
-EXPORT_SYMBOL_GPL(led_trigger_register_simple);
EXPORT_SYMBOL_GPL(led_trigger_unregister_simple);
-EXPORT_SYMBOL_GPL(led_trigger_event);
MODULE_AUTHOR("Richard Purdie");
MODULE_LICENSE("GPL");