Re: [PATCH] [v2] Input: Add "Share" button to Microsoft Xbox One controller.

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On Thu, 2021-03-04 at 20:42 -0800, Roderick Colenbrander wrote:
> (resend in plain text)
> +benjamin in a more explicit way
> 
> Hi Chris,
> 
> I see the need for the Record button. I wonder what makes sense from
> the Linux kernel perspective. For DualShock 4 and DualSense there is a
> Share button too (it introduced it). For DualShock 4 that was mapped
> to 'Select' I think per Linux gamepad spec. For DualSense in 5.12 we
> did the same... Though if there is a true 'Record' button we want to
> use moving forward. Maybe we still want to change the button
> definition for DualSensein 5.12 while we can...
> 
> It would be good to get some consensus on these buttons.

The XBox One Series X controller has 3 of those "middle" buttons, 2
equivalent to Start/Select on older controllers (that were already
present on older versions of the pad) and Share.
https://www.xbox.com/en-US/accessories/controllers/xbox-wireless-controller

The Options buttons on the DS4 replaces Start and Select:
https://manuals.playstation.net/document/en/ps4/basic/pn_controller.html
so Share got added, but Select taken away, which is why you had to
label it Select in the driver.

I don't really see how to fix that without retroactively re-adding
buttons to the DS4 controller ;)

> 
> Thanks,
> Roderick
> 
> 
> On Thu, Mar 4, 2021 at 6:25 PM Chris Ye <lzye@xxxxxxxxxx> wrote:
> > 
> > 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 <lzye@xxxxxxxxxx> 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 <hadess@xxxxxxxxxx>
> > > wrote:
> > > > 
> > > > 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@xxxxxxxxxx>
> > > > > ---
> > > > >  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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