Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fb3d7691 authored by Jacek Anaszewski's avatar Jacek Anaszewski Committed by Jacek Anaszewski
Browse files

leds: ledtrig-heartbeat: Make top brightness adjustable 



LED class heartbeat trigger allowed only for blinking with max_brightness
value. This patch adds more flexibility by exploiting part of LED core
software blink infrastructure.

Signed-off-by: default avatarJacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
parent ae347323

drivers/leds/trigger/ledtrig-heartbeat.c

+11 −4
Original line number Diff line number Diff line
@@ -43,6 +43,9 @@ static void led_heartbeat_function(unsigned long data) 
		return;

	}



	if (test_and_clear_bit(LED_BLINK_BRIGHTNESS_CHANGE, &led_cdev->work_flags))

		led_cdev->blink_brightness = led_cdev->new_blink_brightness;



	/* acts like an actual heart beat -- ie thump-thump-pause... */

	switch (heartbeat_data->phase) {

	case 0:
@@ -59,26 +62,26 @@ static void led_heartbeat_function(unsigned long data) 
		delay = msecs_to_jiffies(70);

		heartbeat_data->phase++;

		if (!heartbeat_data->invert)

			brightness = led_cdev->max_brightness;

			brightness = led_cdev->blink_brightness;

		break;

	case 1:

		delay = heartbeat_data->period / 4 - msecs_to_jiffies(70);

		heartbeat_data->phase++;

		if (heartbeat_data->invert)

			brightness = led_cdev->max_brightness;

			brightness = led_cdev->blink_brightness;

		break;

	case 2:

		delay = msecs_to_jiffies(70);

		heartbeat_data->phase++;

		if (!heartbeat_data->invert)

			brightness = led_cdev->max_brightness;

			brightness = led_cdev->blink_brightness;

		break;

	default:

		delay = heartbeat_data->period - heartbeat_data->period / 4 -

			msecs_to_jiffies(70);

		heartbeat_data->phase = 0;

		if (heartbeat_data->invert)

			brightness = led_cdev->max_brightness;

			brightness = led_cdev->blink_brightness;

		break;

	}
@@ -133,7 +136,10 @@ static void heartbeat_trig_activate(struct led_classdev *led_cdev) 
	setup_timer(&heartbeat_data->timer,

		    led_heartbeat_function, (unsigned long) led_cdev);

	heartbeat_data->phase = 0;

	if (!led_cdev->blink_brightness)

		led_cdev->blink_brightness = led_cdev->max_brightness;

	led_heartbeat_function(heartbeat_data->timer.data);

	set_bit(LED_BLINK_SW, &led_cdev->work_flags);

	led_cdev->activated = true;

}
@@ -145,6 +151,7 @@ static void heartbeat_trig_deactivate(struct led_classdev *led_cdev) 
		del_timer_sync(&heartbeat_data->timer);

		device_remove_file(led_cdev->dev, &dev_attr_invert);

		kfree(heartbeat_data);

		clear_bit(LED_BLINK_SW, &led_cdev->work_flags);

		led_cdev->activated = false;

	}

}