Re: [PATCH 02/25] HID: multitouch: add support for Nexio 42" panel

[Stéphane Chatty]

Le 28 janv. 2013 à 16:01, Henrik Rydberg a écrit :

> Hi Benjamin,
> 
>> This device is the worst device I saw. It keeps TipSwitch and InRange
>> at 1 for fingers that are not touching the panel.
>> The solution is to rely on the field ContactCount, which is accurate
>> as the correct information are packed at the begining of the frame.
>> 
>> Unfortunately, CountactCount is most of the time at the end of the report.
>> The solution is to pick it when we have the whole report in raw_event.
>> 
>> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxx>
>> ---
>> drivers/hid/hid-ids.h        |  3 ++
>> drivers/hid/hid-multitouch.c | 91 ++++++++++++++++++++++++++++++++++++--------
>> 2 files changed, 78 insertions(+), 16 deletions(-)
> 
> I think it would make more sense to introduce a method where the
> driver sees all report values at once. We have had reasonable cause to
> add it in the past, but never did.


I dreamed of this more than once in the early days of hid-multitouch, yes. But then it requires quite a few changes in hid-core.c, doesn't it?

Cheers,

St.

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