HID: wiimote: Add wiimote led request

Add new request that sets the leds on the target device. Also, per
default, set led1 after initializing a device.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/hid/hid-wiimote.c b/drivers/hid/hid-wiimote.c
index efdf62b730f..3fb18fbe080 100644
--- a/drivers/hid/hid-wiimote.c
+++ b/drivers/hid/hid-wiimote.c
@@ -39,7 +39,13 @@ struct wiimote_data {
         struct work_struct worker;
 };
 
+#define WIIPROTO_FLAG_LED1 0x01
+#define WIIPROTO_FLAG_LED2 0x02
+#define WIIPROTO_FLAG_LED3 0x04
+#define WIIPROTO_FLAG_LED4 0x08
+
 enum wiiproto_reqs {
+        WIIPROTO_REQ_LED = 0x11,
         WIIPROTO_REQ_DRM_K = 0x30,
 };
 
@@ -150,6 +156,25 @@ static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer,
         spin_unlock_irqrestore(&wdata->qlock, flags);
 }
 
+static void wiiproto_req_leds(struct wiimote_data *wdata, int leds)
+{
+        __u8 cmd[2];
+
+        cmd[0] = WIIPROTO_REQ_LED;
+        cmd[1] = 0;
+
+        if (leds & WIIPROTO_FLAG_LED1)
+                cmd[1] |= 0x10;
+        if (leds & WIIPROTO_FLAG_LED2)
+                cmd[1] |= 0x20;
+        if (leds & WIIPROTO_FLAG_LED3)
+                cmd[1] |= 0x40;
+        if (leds & WIIPROTO_FLAG_LED4)
+                cmd[1] |= 0x80;
+
+        wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
 static int wiimote_input_event(struct input_dev *dev, unsigned int type,
                                                 unsigned int code, int value)
 {
@@ -301,6 +326,7 @@ static int wiimote_hid_probe(struct hid_device *hdev,
         smp_wmb();
         atomic_set(&wdata->ready, 1);
         hid_info(hdev, "New device registered\n");
+        wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
         return 0;
 
 err_stop: