Hi Bastien,  just want to follow up again on this.  I've checked again
with the Xbox team that the "Share button" is given for the product,
the HID usage profile and mapping to RECORD is what Xbox team expects
and they want the same mapping for USB.

Thanks!
Chris


On Tue, Mar 2, 2021 at 3:57 PM Chris Ye [off-list ref] wrote:

Hi Bastien,
    The "Share button" is a name Microsoft calls it, it actually has
HID descriptor defined in the bluetooth interface, which the HID usage
is:
consumer 0xB2:
0x05, 0x0C,        //   Usage Page (Consumer)
0x0A, 0xB2, 0x00,  //   Usage (Record)
Microsoft wants the same key code to be generated consistently for USB
and bluetooth.
Thanks!
Chris


On Tue, Mar 2, 2021 at 1:50 AM Bastien Nocera [off-list ref] wrote:

quoted

On Thu, 2021-02-25 at 05:32 +0000, Chris Ye wrote:

quoted

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 <redacted>
---
 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

quoted

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