On Wed, Dec 18, 2013 at 03:44:48PM +0100, David Herrmann wrote: > >> > >> /* > >> + * Due to API restrictions the legacy evdev API only supports ABS values up to > >> + * ABS_MAX/CNT. Use the extended *ABS2 ioctls to operate on any ABS values in > >> + * between ABS_MAX and ABS_MAX2. > >> + */ > >> +#define ABS_MAX2 0x3f > >> +#define ABS_CNT2 (ABS_MAX2+1) > >> + > > > > Maybe it's just my English, but when you say "between ABS_MAX and > > ABS_MAX2" it sounds like the old protocol still _must_ be used for > > values <= ABS_MAX. > > > > IIUC this is true "only" for compatibility with older kernels right? > > If a program decides to support only newer kernels it can check the > > protocol version and use only the new ioctls, right? > > > > Maybe you can be more explicit about that in the comment? > > See the comment on "struct input_absinfo2". It describes the API, this > comment just describes the ABS_* values. But if anyone has a better > phrase to use here, I will gladly adjust it. "Use the extended *ABS2 ioctls to access the full range of ABS values supported by the kernel." ? -- Dmitry -- 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
