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Subject[PATCH v3 2/3] Input: joystick: xpad: Add X-Box Adaptive Controller Layer button
Date
Adds a new quirk for controllers that have a Layer button which has 4
states, reflected as an ABS_MISC axis with 4 values.

Signed-off-by: Nate Yocom <nate@yocom.org>
---
drivers/input/joystick/xpad.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index c8b38bb73d34..83a4f4d07af5 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -80,6 +80,7 @@
#define MAP_TRIGGERS_TO_BUTTONS (1 << 1)
#define MAP_STICKS_TO_NULL (1 << 2)
#define MAP_SELECT_BUTTON (1 << 3)
+#define MAP_LAYER_BUTTON (1 << 4)
#define DANCEPAD_MAP_CONFIG (MAP_DPAD_TO_BUTTONS | \
MAP_TRIGGERS_TO_BUTTONS | MAP_STICKS_TO_NULL)

@@ -131,7 +132,7 @@ static const struct xpad_device {
{ 0x045e, 0x02e3, "Microsoft X-Box One Elite pad", 0, XTYPE_XBOXONE },
{ 0x045e, 0x02ea, "Microsoft X-Box One S pad", 0, XTYPE_XBOXONE },
{ 0x045e, 0x0719, "Xbox 360 Wireless Receiver", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX360W },
- { 0x045e, 0x0b0a, "Microsoft X-Box Adaptive Controller", 0, XTYPE_XBOXONE },
+ { 0x045e, 0x0b0a, "Microsoft X-Box Adaptive Controller", MAP_LAYER_BUTTON, XTYPE_XBOXONE },
{ 0x045e, 0x0b12, "Microsoft Xbox Series S|X Controller", MAP_SELECT_BUTTON, XTYPE_XBOXONE },
{ 0x046d, 0xc21d, "Logitech Gamepad F310", 0, XTYPE_XBOX360 },
{ 0x046d, 0xc21e, "Logitech Gamepad F510", 0, XTYPE_XBOX360 },
@@ -927,6 +928,10 @@ static void xpadone_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char
(__u16) le16_to_cpup((__le16 *)(data + 8)));
}

+ /* Layer button has a value of 0-4, so it is reported as an axis */
+ if (xpad->mapping & MAP_LAYER_BUTTON)
+ input_report_abs(dev, ABS_MISC, data[34]);
+
input_sync(dev);
}

@@ -1623,6 +1628,9 @@ static void xpad_set_up_abs(struct input_dev *input_dev, signed short abs)
case ABS_HAT0Y: /* the d-pad (only if dpad is mapped to axes */
input_set_abs_params(input_dev, abs, -1, 1, 0, 0);
break;
+ case ABS_MISC: /* 4 value layer button (such as on XAC) */
+ input_set_abs_params(input_dev, abs, 0, 4, 0, 0);
+ break;
default:
input_set_abs_params(input_dev, abs, 0, 0, 0, 0);
break;
@@ -1715,6 +1723,10 @@ static int xpad_init_input(struct usb_xpad *xpad)
xpad_set_up_abs(input_dev, xpad_abs_triggers[i]);
}

+ /* setup layer button as an axis with 4 possible values */
+ if (xpad->mapping & MAP_LAYER_BUTTON)
+ xpad_set_up_abs(input_dev, ABS_MISC);
+
error = xpad_init_ff(xpad);
if (error)
goto err_free_input;
--
2.30.2
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