Re: [PATCH 0/2] input: mt: Add EVIOC mechanism for MT slots

[Dmitry Torokhov]

Hi Henrik,

On Tue, May 25, 2010 at 01:52:57PM +0200, Henrik Rydberg wrote:
> These patches are in response to the discussion about input state
> retrieval.
> 
> The current EVIOCGABS method does not work with MT slots.  These
> patches provides a mechanism where a slot is first selected via a call
> to EVIOCSABS, after which the corresponding MT events can be extracted
> with calls to EVIOCGABS.
> 
> The symmetric operation, to set the MT state via EVIOCSABS, seems to
> violate input data integrity, and is therefore not implemented.
> 

This looks sane, however the question remains - is there any users for
this data? Like I mentioned, I can see the need to fetch state of
switches and ranges of absolute axis, and even non-multitouch ABS values
(due to the fact that some input devices, like sliders, may stay in a
certain position for long periods of time), but I expect multitouch data
to be "refreshed" very quickly.

Thanks.

-- 
Dmitry
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