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authorTomi Valkeinen <tomi.valkeinen@ti.com>2012-09-03 09:26:33 +0300
committerTomi Valkeinen <tomi.valkeinen@ti.com>2012-09-03 09:26:33 +0300
commitc50e86ce7c2961a41f2f7aa6e4fd6c99229ba205 (patch)
tree4ea36009719bd8fc523239fe1bdccb90f0dce3ae /drivers/leds/led-class.c
parent14d33d384693eb6083396199de516fdef320f7af (diff)
parent4cbe5a555fa58a79b6ecbb6c531b8bab0650778d (diff)
Merge tag 'v3.6-rc4'
Merge 3.6-rc4 to get latest OMAP and device tree fixes.
Diffstat (limited to 'drivers/leds/led-class.c')
-rw-r--r--drivers/leds/led-class.c29
1 files changed, 24 insertions, 5 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index 8ee92c81aec..c599095bc00 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -29,7 +29,7 @@ static void led_update_brightness(struct led_classdev *led_cdev)
led_cdev->brightness = led_cdev->brightness_get(led_cdev);
}
-static ssize_t led_brightness_show(struct device *dev,
+static ssize_t led_brightness_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
@@ -53,7 +53,7 @@ static ssize_t led_brightness_store(struct device *dev,
if (state == LED_OFF)
led_trigger_remove(led_cdev);
- led_set_brightness(led_cdev, state);
+ __led_set_brightness(led_cdev, state);
return size;
}
@@ -82,7 +82,12 @@ static void led_timer_function(unsigned long data)
unsigned long delay;
if (!led_cdev->blink_delay_on || !led_cdev->blink_delay_off) {
- led_set_brightness(led_cdev, LED_OFF);
+ __led_set_brightness(led_cdev, LED_OFF);
+ return;
+ }
+
+ if (led_cdev->flags & LED_BLINK_ONESHOT_STOP) {
+ led_cdev->flags &= ~LED_BLINK_ONESHOT_STOP;
return;
}
@@ -100,7 +105,21 @@ static void led_timer_function(unsigned long data)
delay = led_cdev->blink_delay_off;
}
- led_set_brightness(led_cdev, brightness);
+ __led_set_brightness(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));
}
@@ -203,7 +222,7 @@ void led_classdev_unregister(struct led_classdev *led_cdev)
#endif
/* Stop blinking */
- led_brightness_set(led_cdev, LED_OFF);
+ led_set_brightness(led_cdev, LED_OFF);
device_unregister(led_cdev->dev);