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authorJacek Anaszewski <j.anaszewski@samsung.com>2015-09-28 15:38:04 +0300
committerJacek Anaszewski <j.anaszewski@samsung.com>2015-11-03 10:59:22 +0300
commit757b06ae04b3b6c8958ab067e879a8865d076d2a (patch)
treec210be20cf1c644e2c156acf216f2734526c8cfa /drivers
parent22a16873d38829570677871a22cf77f00445206f (diff)
downloadlinux-757b06ae04b3b6c8958ab067e879a8865d076d2a.tar.xz
leds: core: Move LED core callbacks out of led-class.c
Since the API for controlling LED brightness and blinking is defined in the LED core, move the related timer and work callbacks to the led-core.c, and initialize them through a new led_core_init API. Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com> Acked-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/leds/led-class.c69
-rw-r--r--drivers/leds/led-core.c73
-rw-r--r--drivers/leds/leds.h1
3 files changed, 75 insertions, 68 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index ca51d58bed24..7385f98dd54b 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -102,70 +102,6 @@ static const struct attribute_group *led_groups[] = {
NULL,
};
-static void led_timer_function(unsigned long data)
-{
- struct led_classdev *led_cdev = (void *)data;
- unsigned long brightness;
- unsigned long delay;
-
- if (!led_cdev->blink_delay_on || !led_cdev->blink_delay_off) {
- led_set_brightness_async(led_cdev, LED_OFF);
- return;
- }
-
- if (led_cdev->flags & LED_BLINK_ONESHOT_STOP) {
- led_cdev->flags &= ~LED_BLINK_ONESHOT_STOP;
- return;
- }
-
- brightness = led_get_brightness(led_cdev);
- if (!brightness) {
- /* Time to switch the LED on. */
- if (led_cdev->delayed_set_value) {
- led_cdev->blink_brightness =
- led_cdev->delayed_set_value;
- led_cdev->delayed_set_value = 0;
- }
- brightness = led_cdev->blink_brightness;
- delay = led_cdev->blink_delay_on;
- } else {
- /* Store the current brightness value to be able
- * to restore it when the delay_off period is over.
- */
- led_cdev->blink_brightness = brightness;
- brightness = LED_OFF;
- delay = led_cdev->blink_delay_off;
- }
-
- led_set_brightness_async(led_cdev, brightness);
-
- /* Return in next iteration if led is in one-shot mode and we are in
- * the final blink state so that the led is toggled each delay_on +
- * delay_off milliseconds in worst case.
- */
- if (led_cdev->flags & LED_BLINK_ONESHOT) {
- if (led_cdev->flags & LED_BLINK_INVERT) {
- if (brightness)
- led_cdev->flags |= LED_BLINK_ONESHOT_STOP;
- } else {
- if (!brightness)
- led_cdev->flags |= LED_BLINK_ONESHOT_STOP;
- }
- }
-
- mod_timer(&led_cdev->blink_timer, jiffies + msecs_to_jiffies(delay));
-}
-
-static void set_brightness_delayed(struct work_struct *ws)
-{
- struct led_classdev *led_cdev =
- container_of(ws, struct led_classdev, set_brightness_work);
-
- led_stop_software_blink(led_cdev);
-
- led_set_brightness_async(led_cdev, led_cdev->delayed_set_value);
-}
-
/**
* led_classdev_suspend - suspend an led_classdev.
* @led_cdev: the led_classdev to suspend.
@@ -283,10 +219,7 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
led_update_brightness(led_cdev);
- INIT_WORK(&led_cdev->set_brightness_work, set_brightness_delayed);
-
- setup_timer(&led_cdev->blink_timer, led_timer_function,
- (unsigned long)led_cdev);
+ led_init_core(led_cdev);
#ifdef CONFIG_LEDS_TRIGGERS
led_trigger_set_default(led_cdev);
diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
index 549de7e24cfd..c1c3af089634 100644
--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -25,6 +25,70 @@ EXPORT_SYMBOL_GPL(leds_list_lock);
LIST_HEAD(leds_list);
EXPORT_SYMBOL_GPL(leds_list);
+static void led_timer_function(unsigned long data)
+{
+ struct led_classdev *led_cdev = (void *)data;
+ unsigned long brightness;
+ unsigned long delay;
+
+ if (!led_cdev->blink_delay_on || !led_cdev->blink_delay_off) {
+ led_set_brightness_async(led_cdev, LED_OFF);
+ return;
+ }
+
+ if (led_cdev->flags & LED_BLINK_ONESHOT_STOP) {
+ led_cdev->flags &= ~LED_BLINK_ONESHOT_STOP;
+ return;
+ }
+
+ brightness = led_get_brightness(led_cdev);
+ if (!brightness) {
+ /* Time to switch the LED on. */
+ if (led_cdev->delayed_set_value) {
+ led_cdev->blink_brightness =
+ led_cdev->delayed_set_value;
+ led_cdev->delayed_set_value = 0;
+ }
+ brightness = led_cdev->blink_brightness;
+ delay = led_cdev->blink_delay_on;
+ } else {
+ /* Store the current brightness value to be able
+ * to restore it when the delay_off period is over.
+ */
+ led_cdev->blink_brightness = brightness;
+ brightness = LED_OFF;
+ delay = led_cdev->blink_delay_off;
+ }
+
+ led_set_brightness_async(led_cdev, brightness);
+
+ /* Return in next iteration if led is in one-shot mode and we are in
+ * the final blink state so that the led is toggled each delay_on +
+ * delay_off milliseconds in worst case.
+ */
+ if (led_cdev->flags & LED_BLINK_ONESHOT) {
+ if (led_cdev->flags & LED_BLINK_INVERT) {
+ if (brightness)
+ led_cdev->flags |= LED_BLINK_ONESHOT_STOP;
+ } else {
+ if (!brightness)
+ led_cdev->flags |= LED_BLINK_ONESHOT_STOP;
+ }
+ }
+
+ mod_timer(&led_cdev->blink_timer, jiffies + msecs_to_jiffies(delay));
+}
+
+static void set_brightness_delayed(struct work_struct *ws)
+{
+ struct led_classdev *led_cdev =
+ container_of(ws, struct led_classdev, set_brightness_work);
+
+ led_stop_software_blink(led_cdev);
+
+ led_set_brightness_async(led_cdev, led_cdev->delayed_set_value);
+}
+
static void led_set_software_blink(struct led_classdev *led_cdev,
unsigned long delay_on,
unsigned long delay_off)
@@ -72,6 +136,15 @@ static void led_blink_setup(struct led_classdev *led_cdev,
led_set_software_blink(led_cdev, *delay_on, *delay_off);
}
+void led_init_core(struct led_classdev *led_cdev)
+{
+ INIT_WORK(&led_cdev->set_brightness_work, set_brightness_delayed);
+
+ setup_timer(&led_cdev->blink_timer, led_timer_function,
+ (unsigned long)led_cdev);
+}
+EXPORT_SYMBOL_GPL(led_init_core);
+
void led_blink_set(struct led_classdev *led_cdev,
unsigned long *delay_on,
unsigned long *delay_off)
diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h
index bc89d7ace2c4..4238fbc31d35 100644
--- a/drivers/leds/leds.h
+++ b/drivers/leds/leds.h
@@ -44,6 +44,7 @@ static inline int led_get_brightness(struct led_classdev *led_cdev)
return led_cdev->brightness;
}
+void led_init_core(struct led_classdev *led_cdev);
void led_stop_software_blink(struct led_classdev *led_cdev);
extern struct rw_semaphore leds_list_lock;