On Thu, 3 Oct 2013 15:27:09 +0200 David Herrmann <dh.herrmann@xxxxxxxxx> wrote: > It wasn't really clear from the gamepad-API description how ABS values are > mapped exactly. Clarify that negative is left/up and positive is > right/down. I was just going to ask that, thanks. Has this patch picked up? > ... Unfortunately, this means I screwed up the Wii U ProController > ABI. Anyhow, this just means we continue to have 0 compatible gamepad > drivers in the kernel. User-space needs to fix them up, anyway, as all > other gamepads are also incompatible. > I know it is not really relevant and you won't fix the kernel interface anyway, but I was just curios: is there any known userspace using the gamepad API? Another question is below. > Signed-off-by: David Herrmann <dh.herrmann@xxxxxxxxx> > --- > Documentation/input/gamepad.txt | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/Documentation/input/gamepad.txt b/Documentation/input/gamepad.txt > index 8002c89..31bb6a4 100644 > --- a/Documentation/input/gamepad.txt > +++ b/Documentation/input/gamepad.txt > @@ -122,12 +122,14 @@ D-Pad: > BTN_DPAD_* > Analog buttons are reported as: > ABS_HAT0X and ABS_HAT0Y > + (for ABS values negative is left/up, positive is right/down) > Does that mean that analog D-Pad Left and D-Pad Right are supposed to be described as a single axis (ABS_HAT0X), even if in the input report they come as two different fields (non adjacent even)? And same for analog Up/Down? JFYI on the PS3 controller it is possible to have values from analog D-Pad Left and analog D-Pad Right at the same time, even if it is mechanically unlikely. > Analog-Sticks: > The left analog-stick is reported as ABS_X, ABS_Y. The right analog stick is > reported as ABS_RX, ABS_RY. Zero, one or two sticks may be present. > If analog-sticks provide digital buttons, they are mapped accordingly as > BTN_THUMBL (first/left) and BTN_THUMBR (second/right). > + (for ABS values negative is left/up, positive is right/down) > > Triggers: > Trigger buttons can be available as digital or analog buttons or both. User- > @@ -138,6 +140,7 @@ Triggers: > ABS_HAT2X (right/ZR) and BTN_TL2 or ABS_HAT2Y (left/ZL). > If only one trigger-button combination is present (upper+lower), they are > reported as "right" triggers (BTN_TR/ABS_HAT1X). > + (ABS trigger values start at 0, pressure is reported as positive values) > What about analog Action-Pad buttons? Do you suggest any mapping for them? > Menu-Pad: > Menu buttons are always digital and are mapped according to their location Thanks, Antonio -- Antonio Ospite http://ao2.it A: Because it messes up the order in which people normally read text. See http://en.wikipedia.org/wiki/Posting_style Q: Why is top-posting such a bad thing? -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
