diff options
Diffstat (limited to 'drivers/leds/trigger/ledtrig-timer.c')
| -rw-r--r-- | drivers/leds/trigger/ledtrig-timer.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/leds/trigger/ledtrig-timer.c b/drivers/leds/trigger/ledtrig-timer.c index 7c14983781ee..ca898c1383be 100644 --- a/drivers/leds/trigger/ledtrig-timer.c +++ b/drivers/leds/trigger/ledtrig-timer.c @@ -15,6 +15,7 @@ #include <linux/init.h> #include <linux/device.h> #include <linux/ctype.h> +#include <linux/slab.h> #include <linux/leds.h> static ssize_t led_delay_on_show(struct device *dev, @@ -77,8 +78,41 @@ static struct attribute *timer_trig_attrs[] = { }; ATTRIBUTE_GROUPS(timer_trig); +static void pattern_init(struct led_classdev *led_cdev) +{ + u32 *pattern; + unsigned int size = 0; + + pattern = led_get_default_pattern(led_cdev, &size); + if (!pattern) + return; + + if (size != 2) { + dev_warn(led_cdev->dev, + "Expected 2 but got %u values for delays pattern\n", + size); + goto out; + } + + led_cdev->blink_delay_on = pattern[0]; + led_cdev->blink_delay_off = pattern[1]; + /* led_blink_set() called by caller */ + +out: + kfree(pattern); +} + static int timer_trig_activate(struct led_classdev *led_cdev) { + if (led_cdev->flags & LED_INIT_DEFAULT_TRIGGER) { + pattern_init(led_cdev); + /* + * Mark as initialized even on pattern_init() error because + * any consecutive call to it would produce the same error. + */ + led_cdev->flags &= ~LED_INIT_DEFAULT_TRIGGER; + } + led_blink_set(led_cdev, &led_cdev->blink_delay_on, &led_cdev->blink_delay_off); |