Ok, I got your point... So having both looks like the best option to me. 2014-11-10 10:15 GMT-02:00 Daniel Dressler <danieru.dressler@xxxxxxxxx>: > I'd love to make all controllers report as axises but doing so _will_ > break stuff downstream. Not least of which being every game which uses > SDL2's controller configs: > https://github.com/gabomdq/SDL_GameControllerDB/blob/master/gamecontrollerdb.txt > > Which is just about every-single major commercial proprietary game > which has been ported to linux in the past 2 years. > > Now it should also be clear that adding extra axises will not break > those games. The SDL2 library should just ignore those axises. > > Also, the module option "dpad_to_buttons" will only operate on unknown > devices. Users cannot use it to return to old behavior so we have to > get this right. > > Daniel > > 2014-11-10 20:47 GMT+09:00 Thomaz de Oliveira dos Reis <thor27@xxxxxxxxx>: >> I totally agree that the behavior should be exactly the same in all >> XBOX gamepads. But In my opinion this should be mapped as axis only, >> since mapping for both could make a confusion in some games. >> >> If you need the axis to be buttons, you can set as a option while >> loading the module. >> >> >> >> >> 2014-11-10 6:06 GMT-02:00 Daniel Dressler <danieru.dressler@xxxxxxxxx>: >>> Thanks Jon >>> >>> I've sent a second version of the patch without the TODO list edits. >>> >>> >>> Now I would like to ask about a backwards compact issue related to this driver. >>> >>> Eons ago in patch 99de0912b [0] when support for the wireless 360 >>> controllers were added the decision was made to map their Dpad to the >>> discrete buttons. >>> >>> There is reasonable justification for this behavior since the Dpad has >>> never functioned like an analog stick on Xbox hardware. >>> >>> Except support for wired 360 controllers had been added a year earlier >>> and used the opposite behavior. In fact the wireless 360 controllers >>> are the only controllers which use the dpad_to_button behavior. >>> >>> Original Xbox, wired Xbox 360, and all Xbox One controllers all expose >>> the dpad as a set of axises. >>> >>> This has caused pain for downstream developers. It means two >>> controllers have wildly different behavior. Many developers have just >>> ignored the issue or suggested users unload xpand and use the userland >>> replacement. Even Arch's wiki suggests such [1]. Which to be honest is >>> all one can do. The xpad driver does not expose the information >>> developers need to even incorporate a workaround without nasty hacks. >>> >>> As a downstream developer I've been bitten by this twice. The first >>> time I didn't even know that wired vs wireless made a difference and I >>> was disturbed to learn the truth. >>> >>> So here is what I want to hear opinions on: should the wireless 360's >>> dpad be exposed as both axises _and_ buttons? >>> >>> [0]: https://github.com/torvalds/linux/commit/99de0912b when t >>> [1]: https://wiki.archlinux.org/index.php/joystick#Xbox_360_controllers >>> >>> Daniel >>> >>> 2014-11-08 3:48 GMT+09:00 Jonathan Corbet <corbet@xxxxxxx>: >>>> On Mon, 3 Nov 2014 17:53:06 +0900 >>>> Daniel Dressler <danieru.dressler@xxxxxxxxx> wrote: >>>> >>>>> The last time this documentation was accurate was >>>>> just over 8 years ago. In this time we've added >>>>> support for two new generations of Xbox console >>>>> controllers and dozens of third-party controllers. >>>>> >>>>> This patch unifies terminology and makes it explicit >>>>> which model of controller a sentence refers to. >>>> >>>> So this seems like a useful update, and I was looking at pulling it into >>>> the docs tree. But this hunk: >>>> >>>>> diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c >>>>> index 2ed7905..7e2e047 100644 >>>>> --- a/drivers/input/joystick/xpad.c >>>>> +++ b/drivers/input/joystick/xpad.c >>>>> @@ -40,8 +40,8 @@ >>>>> * >>>>> * TODO: >>>>> * - fine tune axes (especially trigger axes) >>>>> - * - fix "analog" buttons (reported as digital now) >>>>> - * - get rumble working >>>>> + * - add original xbox rumble pack support >>>>> + * - add xbox one rumble support >>>>> * - need USB IDs for other dance pads >>>>> * >>>>> * History: >>>> >>>> Seems like a different change that shouldn't be mixed up with the doc >>>> update. Send me a version without that change and, in the absence >>>> of complaints, I'll apply it. >>>> >>>> Thanks, >>>> >>>> jon -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
