[Bug 40658] Joystick POW hat switch rotated for JOYDEVDRIVER=(js) while JOYDEVDRIVER=(event) is Ok

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=40658

Paul <geoff.pvgn1 at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |geoff.pvgn1 at gmail.com

--- Comment #10 from Paul <geoff.pvgn1 at gmail.com> ---
Hi.  Ran into this apparently old issue after dusting off a T.Flight Hotas X
from Thrustmaster.  Same exact behavior with the hat switch through the js0
interface as described above.

Present in vanilla wine 5.0.3 and 6.3 in Gentoo, in 32 and 64 bit clean
prefixes.

In game (tested in Everspace) and in wine control panel, the joystick's event
interface (/dev/input/event8) registers proper cardinal directions for the hat
switch.  Switching to the js interface (/dev/input/js0), the hat switch's X and
Y axes are swapped.  As a fix, I can swap the mapping in jstest-gtk, and js0
will behave properly in wine.  Not ideal, since I'd be swapping it back and
forth.

My preference for the js0 interface is because I can adjust deadzones through
jstest-gtk and jscal.  The counterpart event program "evdev-joystick" doesn't
seem to actually affect the deadzone.

I'd pursue the event program's issues, but since js0 works fine outside of
wine, I'd consider this issue an easier bridge to cross.

The joystick has seven axes (identified in jscal as 0, 1, 2, 5, 6, 16, 17) ,
including the two representing the single hat switch on it.  The hat axes are
16 (x axis) and 17 (y axis).

I can successfully remap axes on the joystick through instructions at:
https://wiki.winehq.org/Useful_Registry_Keys
However, it doesn't affect the hat switch's orientation.

I patched wine 6.3, using the patch here as a base, and it fixed the hat switch
cardinals.  According to comment #5 it looks like it breaks other controllers,
so that may not be the solution.  I am attaching logs from WINEDEBUG=+dinput
wine control for the unpatched and patched cases.  I am also attaching the
udevadm info for the joystick.

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