INPUT: xpad: switch Logitech G920 Wheel into HID mode

When plugged in the Logitech G920 wheel starts with USBID 046d:c261
and behaviors as a vendor specific class. If a 'magic' byte sequence
is sent the wheel will detach and reconnect as a HID device with the
USBID 046d:c262.

Signed-off-by: Simon Wood <simon@mungewell.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index f8850f9cb33103ccfef4d696389f2b6ddad1249d..af83f7ef83e4d471345386dfa96bda7be301b416 100644 (file)
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -93,6 +93,7 @@
 #define MAP_STICKS_TO_NULL             (1 << 2)
 #define DANCEPAD_MAP_CONFIG    (MAP_DPAD_TO_BUTTONS |                  \
                                MAP_TRIGGERS_TO_BUTTONS | MAP_STICKS_TO_NULL)
+#define SWITCH_G920_TO_HID_MODE                (1 << 3)
 
 #define XTYPE_XBOX        0
 #define XTYPE_XBOX360     1
@@ -133,6 +134,7 @@ static const struct xpad_device {
        { 0x046d, 0xc21e, "Logitech Gamepad F510", 0, XTYPE_XBOX360 },
        { 0x046d, 0xc21f, "Logitech Gamepad F710", 0, XTYPE_XBOX360 },
        { 0x046d, 0xc242, "Logitech Chillstream Controller", 0, XTYPE_XBOX360 },
+       { 0x046d, 0xc261, "Logitech G920 Driving Force Racing Wheel", SWITCH_G920_TO_HID_MODE, XTYPE_XBOXONE },
        { 0x046d, 0xca84, "Logitech Xbox Cordless Controller", 0, XTYPE_XBOX },
        { 0x046d, 0xca88, "Logitech Compact Controller for Xbox", 0, XTYPE_XBOX },
        { 0x05fd, 0x1007, "Mad Catz Controller (unverified)", 0, XTYPE_XBOX },
@@ -299,6 +301,7 @@ static struct usb_device_id xpad_table[] = {
        XPAD_XBOX360_VENDOR(0x045e),            /* Microsoft X-Box 360 controllers */
        XPAD_XBOXONE_VENDOR(0x045e),            /* Microsoft X-Box One controllers */
        XPAD_XBOX360_VENDOR(0x046d),            /* Logitech X-Box 360 style controllers */
+       XPAD_XBOXONE_VENDOR(0x046d),            /* Logitech X-Box One style controllers */
        XPAD_XBOX360_VENDOR(0x0738),            /* Mad Catz X-Box 360 controllers */
        { USB_DEVICE(0x0738, 0x4540) },         /* Mad Catz Beat Pad */
        XPAD_XBOX360_VENDOR(0x0e6f),            /* 0x0e6f X-Box 360 controllers */
@@ -1021,6 +1024,19 @@ static int xpad_open(struct input_dev *dev)
        if (usb_submit_urb(xpad->irq_in, GFP_KERNEL))
                return -EIO;
 
+       /* Logitect G920 wheel starts in XBOX mode, but is reconfigured to be HID  */
+       /* device with USBID of 046D:C262. Wheel will detach when 'magic' is sent. */
+       if (xpad->mapping & SWITCH_G920_TO_HID_MODE) {
+               xpad->odata[0] = 0x0F;
+               xpad->odata[1] = 0x00;
+               xpad->odata[2] = 0x01;
+               xpad->odata[3] = 0x01;
+               xpad->odata[4] = 0x42;
+               xpad->irq_out->transfer_buffer_length = 5;
+
+               return usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+       }
+
        if (xpad->xtype == XTYPE_XBOXONE) {
                /* Xbox one controller needs to be initialized. */
                xpad->odata[0] = 0x05;