HID: wacom: Use half of brightness for low state

Intuos4 WL leds have 2 states: high and low. With no activity tablet
uses low state; using pen triggers high state. Both can be set
independently, but it would require setting another led device to
control them separately. This patch uses the brightness set through leds
subsytem as high and half of that value as low.

Signed-off-by: Przemo Firszt <przemo@firszt.eu>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
index fe23a1eb586bdc6d30e049aaae8c34d49fdc7499..848842e0df1401442a719bd229c023707437923e 100644 (file)
--- a/drivers/hid/hid-wacom.c
+++ b/drivers/hid/hid-wacom.c
@@ -91,7 +91,8 @@ static void wacom_leds_set_brightness(struct led_classdev *led_dev,
        if (buf) {
                buf[0] = WAC_CMD_LED_CONTROL;
                buf[1] = led;
-               buf[2] = value;
+               buf[2] = value >> 2;
+               buf[3] = value;
                hdev->hid_output_raw_report(hdev, buf, 9, HID_FEATURE_REPORT);
                kfree(buf);
        }