diff options
Diffstat (limited to 'drivers/leds/trigger/ledtrig-oneshot.c')
| -rw-r--r-- | drivers/leds/trigger/ledtrig-oneshot.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/drivers/leds/trigger/ledtrig-oneshot.c b/drivers/leds/trigger/ledtrig-oneshot.c index 95c9be4b6e7e..8808f0ad7339 100644 --- a/drivers/leds/trigger/ledtrig-oneshot.c +++ b/drivers/leds/trigger/ledtrig-oneshot.c @@ -130,6 +130,34 @@ static struct attribute *oneshot_trig_attrs[] = { }; ATTRIBUTE_GROUPS(oneshot_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) + goto out_default; + + if (size != 2) { + dev_warn(led_cdev->dev, + "Expected 2 but got %u values for delays pattern\n", + size); + goto out_default; + } + + led_cdev->blink_delay_on = pattern[0]; + led_cdev->blink_delay_off = pattern[1]; + kfree(pattern); + + return; + +out_default: + kfree(pattern); + led_cdev->blink_delay_on = DEFAULT_DELAY; + led_cdev->blink_delay_off = DEFAULT_DELAY; +} + static int oneshot_trig_activate(struct led_classdev *led_cdev) { struct oneshot_trig_data *oneshot_data; @@ -140,8 +168,14 @@ static int oneshot_trig_activate(struct led_classdev *led_cdev) led_set_trigger_data(led_cdev, oneshot_data); - led_cdev->blink_delay_on = DEFAULT_DELAY; - led_cdev->blink_delay_off = DEFAULT_DELAY; + 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; + } return 0; } |