2016-03-16 16:26 GMT+01:00 David Herrmann <dh.herrmann@xxxxxxxxx>: > Hi > > On Wed, Mar 16, 2016 at 4:10 PM, Bastien Nocera <hadess@xxxxxxxxxx> wrote: >> On Tue, 2016-03-15 at 17:17 -0700, Roderick Colenbrander wrote: >>> Hi Bastien, >>> >>> Thanks for providing this suggestion. I can see this approach work >>> for >>> situations like screen rotation on tablets. The device I'm involved >>> with is an input device, which needs a high poll rate for >>> acceleration >>> / velocity and needs to be paired with the button / axes data. Evdev >>> would be most appropriate. >> >> So more like a Wiimote than a builtin sensor. What will consume events >> in user-space? A specialised application? > > I really think evdev is the right place to put any of those devices. > The real problem is that the current set of ABS types is very limited > and strongly overloaded. We didn't do this for other types, but > somehow ABS turned out that way. > > In general, Dmitry was ok with introducing new ABS types, properly > representing those types. I sent an RFC some years ago, which also > introduces gyro and accelerometer types (see patch #4): > > https://lists.freedesktop.org/archives/input-tools/2013-December/000612.html > > The problem is, however, that the current ABS_* namespace is > exhausted. That is, we have to introduce some new way to add new ABS > types (the series introduced ABS2 for that). No-one continued that > effort so far, so we are stuck with the current ABS types. Feel free > to pick this up. It might be a lengthy effort, though. You might be > better off doing it the wiimote way: pick you ABS types and make > user-space recognize them depending on the device name/etc. Hi. I am writing a user-space driver for the steam controller and I was wondering how that would fit. The steam controller reports its absolute gyro data as a quaternion instead of three angles. Although, in the case of the steam controller, this data is meant to emulate other kind of devices from the driver, if applications started to use such an interface, it would be nice that the steam controller supports it. > > Thanks > David -- 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
