Input: xpad - fix Share button on Xbox One controllers

The Share button, if present, is always one of two offsets from the end of the
file, depending on the presence of a specific interface. As we lack parsing for
the identify packet we can't automatically determine the presence of that
interface, but we can hardcode which of these offsets is correct for a given
controller.

More controllers are probably fixable by adding the MAP_SHARE_BUTTON in the
future, but for now I only added the ones that I have the ability to test
directly.

Signed-off-by: Vicki Pfau <vi@endrift.com>
Link: https://lore.kernel.org/r/20250328234345.989761-2-vi@endrift.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Author: endrift

drivers/input/joystick/xpad.c

@@ -77,12 +77,13 @@
  * xbox d-pads should map to buttons, as is required for DDR pads
  * but we map them to axes when possible to simplify things
  */
-#define MAP_DPAD_TO_BUTTONS		(1 << 0)
-#define MAP_TRIGGERS_TO_BUTTONS		(1 << 1)
-#define MAP_STICKS_TO_NULL		(1 << 2)
-#define MAP_SELECT_BUTTON		(1 << 3)
-#define MAP_PADDLES			(1 << 4)
-#define MAP_PROFILE_BUTTON		(1 << 5)
+#define MAP_DPAD_TO_BUTTONS		BIT(0)
+#define MAP_TRIGGERS_TO_BUTTONS		BIT(1)
+#define MAP_STICKS_TO_NULL		BIT(2)
+#define MAP_SHARE_BUTTON		BIT(3)
+#define MAP_PADDLES			BIT(4)
+#define MAP_PROFILE_BUTTON		BIT(5)
+#define MAP_SHARE_OFFSET		BIT(6)
 
 #define DANCEPAD_MAP_CONFIG	(MAP_DPAD_TO_BUTTONS |			\
 				MAP_TRIGGERS_TO_BUTTONS | MAP_STICKS_TO_NULL)
@@ -135,7 +136,7 @@ static const struct xpad_device {
 	{ 0x03f0, 0x048D, "HyperX Clutch", 0, XTYPE_XBOX360 },			/* wireless */
 	{ 0x03f0, 0x0495, "HyperX Clutch Gladiate", 0, XTYPE_XBOXONE },
 	{ 0x03f0, 0x07A0, "HyperX Clutch Gladiate RGB", 0, XTYPE_XBOXONE },
-	{ 0x03f0, 0x08B6, "HyperX Clutch Gladiate", 0, XTYPE_XBOXONE },		/* v2 */
+	{ 0x03f0, 0x08B6, "HyperX Clutch Gladiate", MAP_SHARE_BUTTON, XTYPE_XBOXONE },		/* v2 */
 	{ 0x03f0, 0x09B4, "HyperX Clutch Tanto", 0, XTYPE_XBOXONE },
 	{ 0x044f, 0x0f00, "Thrustmaster Wheel", 0, XTYPE_XBOX },
 	{ 0x044f, 0x0f03, "Thrustmaster Wheel", 0, XTYPE_XBOX },
@@ -159,7 +160,7 @@ static const struct xpad_device {
 	{ 0x045e, 0x0719, "Xbox 360 Wireless Receiver", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX360W },
 	{ 0x045e, 0x0b00, "Microsoft X-Box One Elite 2 pad", MAP_PADDLES, XTYPE_XBOXONE },
 	{ 0x045e, 0x0b0a, "Microsoft X-Box Adaptive Controller", MAP_PROFILE_BUTTON, XTYPE_XBOXONE },
-	{ 0x045e, 0x0b12, "Microsoft Xbox Series S|X Controller", MAP_SELECT_BUTTON, XTYPE_XBOXONE },
+	{ 0x045e, 0x0b12, "Microsoft Xbox Series S|X Controller", MAP_SHARE_BUTTON | MAP_SHARE_OFFSET, XTYPE_XBOXONE },
 	{ 0x046d, 0xc21d, "Logitech Gamepad F310", 0, XTYPE_XBOX360 },
 	{ 0x046d, 0xc21e, "Logitech Gamepad F510", 0, XTYPE_XBOX360 },
 	{ 0x046d, 0xc21f, "Logitech Gamepad F710", 0, XTYPE_XBOX360 },
@@ -211,7 +212,7 @@ static const struct xpad_device {
 	{ 0x0738, 0xcb29, "Saitek Aviator Stick AV8R02", 0, XTYPE_XBOX360 },
 	{ 0x0738, 0xf738, "Super SFIV FightStick TE S", 0, XTYPE_XBOX360 },
 	{ 0x07ff, 0xffff, "Mad Catz GamePad", 0, XTYPE_XBOX360 },
-	{ 0x0b05, 0x1a38, "ASUS ROG RAIKIRI", 0, XTYPE_XBOXONE },
+	{ 0x0b05, 0x1a38, "ASUS ROG RAIKIRI", MAP_SHARE_BUTTON, XTYPE_XBOXONE },
 	{ 0x0b05, 0x1abb, "ASUS ROG RAIKIRI PRO", 0, XTYPE_XBOXONE },
 	{ 0x0c12, 0x0005, "Intec wireless", 0, XTYPE_XBOX },
 	{ 0x0c12, 0x8801, "Nyko Xbox Controller", 0, XTYPE_XBOX },
@@ -391,7 +392,7 @@ static const struct xpad_device {
 	{ 0x2dc8, 0x6001, "8BitDo SN30 Pro", 0, XTYPE_XBOX360 },
 	{ 0x2e24, 0x0652, "Hyperkin Duke X-Box One pad", 0, XTYPE_XBOXONE },
 	{ 0x2e24, 0x1688, "Hyperkin X91 X-Box One pad", 0, XTYPE_XBOXONE },
-	{ 0x2e95, 0x0504, "SCUF Gaming Controller", MAP_SELECT_BUTTON, XTYPE_XBOXONE },
+	{ 0x2e95, 0x0504, "SCUF Gaming Controller", MAP_SHARE_BUTTON, XTYPE_XBOXONE },
 	{ 0x31e3, 0x1100, "Wooting One", 0, XTYPE_XBOX360 },
 	{ 0x31e3, 0x1200, "Wooting Two", 0, XTYPE_XBOX360 },
 	{ 0x31e3, 0x1210, "Wooting Lekker", 0, XTYPE_XBOX360 },
@@ -1028,7 +1029,7 @@ static void xpad360w_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned cha
  *	The report format was gleaned from
  *	https://github.com/kylelemons/xbox/blob/master/xbox.go
  */
-static void xpadone_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data)
+static void xpadone_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data, u32 len)
 {
 	struct input_dev *dev = xpad->dev;
 	bool do_sync = false;
@@ -1069,8 +1070,12 @@ static void xpadone_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char
 		/* menu/view buttons */
 		input_report_key(dev, BTN_START,  data[4] & BIT(2));
 		input_report_key(dev, BTN_SELECT, data[4] & BIT(3));
-		if (xpad->mapping & MAP_SELECT_BUTTON)
-			input_report_key(dev, KEY_RECORD, data[22] & BIT(0));
+		if (xpad->mapping & MAP_SHARE_BUTTON) {
+			if (xpad->mapping & MAP_SHARE_OFFSET)
+				input_report_key(dev, KEY_RECORD, data[len - 26] & BIT(0));
+			else
+				input_report_key(dev, KEY_RECORD, data[len - 18] & BIT(0));
+		}
 
 		/* buttons A,B,X,Y */
 		input_report_key(dev, BTN_A,	data[4] & BIT(4));
@@ -1218,7 +1223,7 @@ static void xpad_irq_in(struct urb *urb)
 		xpad360w_process_packet(xpad, 0, xpad->idata);
 		break;
 	case XTYPE_XBOXONE:
-		xpadone_process_packet(xpad, 0, xpad->idata);
+		xpadone_process_packet(xpad, 0, xpad->idata, urb->actual_length);
 		break;
 	default:
 		xpad_process_packet(xpad, 0, xpad->idata);
@@ -1945,7 +1950,7 @@ static int xpad_init_input(struct usb_xpad *xpad)
 	    xpad->xtype == XTYPE_XBOXONE) {
 		for (i = 0; xpad360_btn[i] >= 0; i++)
 			input_set_capability(input_dev, EV_KEY, xpad360_btn[i]);
-		if (xpad->mapping & MAP_SELECT_BUTTON)
+		if (xpad->mapping & MAP_SHARE_BUTTON)
 			input_set_capability(input_dev, EV_KEY, KEY_RECORD);
 	} else {
 		for (i = 0; xpad_btn[i] >= 0; i++)