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Fri, 07 Aug 2026 07:42:08 -0700 (PDT) From: Vernon Di Carlo To: dmitry.torokhov@gmail.com Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Vernon Di Carlo Subject: [PATCH v2] Input: xpad - fix button mapping on Razer Atrox Xbox One Date: Fri, 7 Aug 2026 09:41:53 -0500 Message-ID: <20260807144153.8430-1-vernondicarlo@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260807141419.7930-1-vernondicarlo@gmail.com> References: <20260807141419.7930-1-vernondicarlo@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The Razer Atrox Arcade Stick for Xbox One (1532:0a00) does not use the standard Xbox One input layout for its shoulder and trigger buttons. USB captures show that LB and RB are reported in bits 5 and 4 of byte 5 respectively, opposite to the standard Xbox One mapping. The digital LT and RT states are reported in bits 7 and 6 of byte 22 instead of the standard analog trigger fields. As a result, xpad currently reports LB and RB swapped and does not report LT or RT at all. Add an Atrox-specific mapping quirk to swap LB/RB and report LT/RT from their actual locations. Tested with a Razer Atrox Arcade Stick for Xbox One, USB ID 1532:0a00. Signed-off-by: Vernon Di Carlo --- Notes: Changes in v2: - Reject short Atrox input packets instead of falling back to the standard Xbox One trigger layout. drivers/input/joystick/xpad.c | 29 ++++++++++++++++++++++------- 1 file changed, 22 insertions(+), 7 deletions(-) diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index feb8f368f..00de9145e 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -50,6 +50,7 @@ #define MAP_PADDLES BIT(4) #define MAP_PROFILE_BUTTON BIT(5) #define MAP_SHARE_OFFSET BIT(6) +#define MAP_ATROX BIT(7) =20 #define DANCEPAD_MAP_CONFIG (MAP_DPAD_TO_BUTTONS | \ MAP_TRIGGERS_TO_BUTTONS | MAP_STICKS_TO_NULL) @@ -280,7 +281,8 @@ static const struct xpad_device { { 0x1430, 0xf801, "RedOctane Controller", 0, XTYPE_XBOX360 }, { 0x146b, 0x0601, "BigBen Interactive XBOX 360 Controller", 0, XTYPE_XBOX= 360 }, { 0x146b, 0x0604, "Bigben Interactive DAIJA Arcade Stick", MAP_TRIGGERS_T= O_BUTTONS, XTYPE_XBOX360 }, - { 0x1532, 0x0a00, "Razer Atrox Arcade Stick", MAP_TRIGGERS_TO_BUTTONS, XT= YPE_XBOXONE }, + { 0x1532, 0x0a00, "Razer Atrox Arcade Stick", + MAP_TRIGGERS_TO_BUTTONS | MAP_ATROX, XTYPE_XBOXONE }, { 0x1532, 0x0a03, "Razer Wildcat", 0, XTYPE_XBOXONE }, { 0x1532, 0x0a29, "Razer Wolverine V2", 0, XTYPE_XBOXONE }, { 0x1532, 0x0a57, "Razer Wolverine V3 Pro (Wired)", 0, XTYPE_XBOX360 }, @@ -1079,6 +1081,9 @@ static void xpadone_process_packet(struct usb_xpad *x= pad, u16 cmd, unsigned char error); } } else if (data[0] =3D=3D GIP_CMD_INPUT) { /* The main valid packet type = for inputs */ + if ((xpad->mapping & MAP_ATROX) && len <=3D 22) + return; + /* menu/view buttons */ input_report_key(dev, BTN_START, data[4] & BIT(2)); input_report_key(dev, BTN_SELECT, data[4] & BIT(3)); @@ -1110,8 +1115,13 @@ static void xpadone_process_packet(struct usb_xpad *= xpad, u16 cmd, unsigned char } =20 /* TL/TR */ - input_report_key(dev, BTN_TL, data[5] & BIT(4)); - input_report_key(dev, BTN_TR, data[5] & BIT(5)); + if (xpad->mapping & MAP_ATROX) { + input_report_key(dev, BTN_TL, data[5] & BIT(5)); + input_report_key(dev, BTN_TR, data[5] & BIT(4)); + } else { + input_report_key(dev, BTN_TL, data[5] & BIT(4)); + input_report_key(dev, BTN_TR, data[5] & BIT(5)); + } =20 /* stick press left/right */ input_report_key(dev, BTN_THUMBL, data[5] & BIT(6)); @@ -1133,10 +1143,15 @@ static void xpadone_process_packet(struct usb_xpad = *xpad, u16 cmd, unsigned char =20 /* triggers left/right */ if (xpad->mapping & MAP_TRIGGERS_TO_BUTTONS) { - input_report_key(dev, BTN_TL2, - (__u16) le16_to_cpup((__le16 *)(data + 6))); - input_report_key(dev, BTN_TR2, - (__u16) le16_to_cpup((__le16 *)(data + 8))); + if (xpad->mapping & MAP_ATROX) { + input_report_key(dev, BTN_TL2, data[22] & BIT(7)); + input_report_key(dev, BTN_TR2, data[22] & BIT(6)); + } else { + input_report_key(dev, BTN_TL2, + (__u16) le16_to_cpup((__le16 *)(data + 6))); + input_report_key(dev, BTN_TR2, + (__u16) le16_to_cpup((__le16 *)(data + 8))); + } } else { input_report_abs(dev, ABS_Z, (__u16) le16_to_cpup((__le16 *)(data + 6))); --=20 2.53.0