[PATCH 1/2] Input: xpad: Add the logic to set the LEDs on XBox Wireless controllers. Command sequence found by sniffing the Windows data stream when plugging the device in.

[Pavel Rojtberg <rojtberg@xxxxxxxxx>]

From: "Pierre-Loup A. Griffais" <pgriffais@xxxxxxxxxxxxxxxxx>

Signed-off-by: "Pierre-Loup A. Griffais" <pgriffais@xxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

unify codepaths for xbox360/ wireless based on ML discussion. also
document xpad_send_led_command command values for clarification.

Signed-off-by: Pavel Rojtberg <rojtberg@xxxxxxxxx>
---
 drivers/input/joystick/xpad.c | 50 +++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 45 insertions(+), 5 deletions(-)

diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index 61c7611..e50c03f 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -881,17 +881,57 @@ struct xpad_led {
 	struct usb_xpad *xpad;
 };
 
+/**
+ * @param command
+ *  0: off
+ *  1: all blink, then previous setting
+ *  2: 1/top-left blink, then on
+ *  3: 2/top-right blink, then on
+ *  4: 3/bottom-left blink, then on
+ *  5: 4/bottom-right blink, then on
+ *  6: 1/top-left on
+ *  7: 2/top-right on
+ *  8: 3/bottom-left on
+ *  9: 4/bottom-right on
+ * 10: rotate
+ * 11: blink, based on previous setting
+ * 12: slow blink, based on previous setting
+ * 13: rotate with two lights
+ * 14: persistent slow all blink
+ * 15: blink once, then previous setting
+ */
 static void xpad_send_led_command(struct usb_xpad *xpad, int command)
 {
-	if (command >= 0 && command < 14) {
-		mutex_lock(&xpad->odata_mutex);
+	command %= 15;
+
+	mutex_lock(&xpad->odata_mutex);
+
+	switch (xpad->xtype) {
+	case XTYPE_XBOX360:
 		xpad->odata[0] = 0x01;
 		xpad->odata[1] = 0x03;
 		xpad->odata[2] = command;
 		xpad->irq_out->transfer_buffer_length = 3;
-		usb_submit_urb(xpad->irq_out, GFP_KERNEL);
-		mutex_unlock(&xpad->odata_mutex);
+		break;
+	case XTYPE_XBOX360W:
+		xpad->odata[0] = 0x00;
+		xpad->odata[1] = 0x00;
+		xpad->odata[2] = 0x08;
+		xpad->odata[3] = 0x40 + command;
+		xpad->odata[4] = 0x00;
+		xpad->odata[5] = 0x00;
+		xpad->odata[6] = 0x00;
+		xpad->odata[7] = 0x00;
+		xpad->odata[8] = 0x00;
+		xpad->odata[9] = 0x00;
+		xpad->odata[10] = 0x00;
+		xpad->odata[11] = 0x00;
+		xpad->irq_out->transfer_buffer_length = 12;
+		break;
 	}
+
+	usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+	mutex_unlock(&xpad->odata_mutex);
 }
 
 static void xpad_led_set(struct led_classdev *led_cdev,
@@ -911,7 +951,7 @@ static int xpad_led_probe(struct usb_xpad *xpad)
 	struct led_classdev *led_cdev;
 	int error;
 
-	if (xpad->xtype != XTYPE_XBOX360)
+	if (xpad->xtype != XTYPE_XBOX360 && xpad->xtype != XTYPE_XBOX360W)
 		return 0;
 
 	xpad->led = led = kzalloc(sizeof(struct xpad_led), GFP_KERNEL);
-- 
1.9.1

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