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SubjectRe: [PATCH] [v2] Input: Add "Share" button to Microsoft Xbox One controller.
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On Thu, 2021-02-25 at 05:32 +0000, Chris Ye wrote:
> Add "Share" button input capability and input event mapping for
> Microsoft Xbox One controller.
> Fixed Microsoft Xbox One controller share button not working under USB
> connection.
>
> Signed-off-by: Chris Ye <lzye@google.com>
> ---
>  drivers/input/joystick/xpad.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/input/joystick/xpad.c
> b/drivers/input/joystick/xpad.c
> index 9f0d07dcbf06..0c3374091aff 100644
> --- a/drivers/input/joystick/xpad.c
> +++ b/drivers/input/joystick/xpad.c
> @@ -79,6 +79,7 @@
>  #define MAP_DPAD_TO_BUTTONS            (1 << 0)
>  #define MAP_TRIGGERS_TO_BUTTONS                (1 << 1)
>  #define MAP_STICKS_TO_NULL             (1 << 2)
> +#define MAP_SHARE_BUTTON               (1 << 3)
>  #define DANCEPAD_MAP_CONFIG    (MAP_DPAD_TO_BUTTONS
> |                  \
>                                 MAP_TRIGGERS_TO_BUTTONS |
> MAP_STICKS_TO_NULL)
>  
> @@ -130,6 +131,7 @@ 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, 0x0b12, "Microsoft X-Box One X pad",
> MAP_SHARE_BUTTON, 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 },
> @@ -862,6 +864,8 @@ static void xpadone_process_packet(struct usb_xpad
> *xpad, u16 cmd, unsigned char
>         /* menu/view buttons */
>         input_report_key(dev, BTN_START,  data[4] & 0x04);
>         input_report_key(dev, BTN_SELECT, data[4] & 0x08);
> +       if (xpad->mapping & MAP_SHARE_BUTTON)
> +               input_report_key(dev, KEY_RECORD, data[22] & 0x01);
>  
>         /* buttons A,B,X,Y */
>         input_report_key(dev, BTN_A,    data[4] & 0x10);
> @@ -1669,9 +1673,12 @@ static int xpad_init_input(struct usb_xpad
> *xpad)
>  
>         /* set up model-specific ones */
>         if (xpad->xtype == XTYPE_XBOX360 || xpad->xtype ==
> XTYPE_XBOX360W ||
> -           xpad->xtype == XTYPE_XBOXONE) {
> +               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_SHARE_BUTTON) {
> +                       input_set_capability(input_dev, EV_KEY,
> KEY_RECORD);

Is there not a better keycode to use than "Record"? Should a "share"
keycode be added?

I couldn't find a share button in the most recent USB HID Usage Tables:
https://www.usb.org/document-library/hid-usage-tables-121

> +               }
>         } else {
>                 for (i = 0; xpad_btn[i] >= 0; i++)
>                         input_set_capability(input_dev, EV_KEY,
> xpad_btn[i]);


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