Re: [PATCH 2/5] input: wacom - remove pressure for touch devices

On Fri, Aug 12, 2011 at 7:08 PM, Ping Cheng [off-list ref] wrote:

Touch devices do not report valid pressure or capacitance.

Signed-off-by: Ping Cheng <redacted>
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I'd prefer if we kept pressure support.  At least for Bamboo's with
product ID between 0xd0 and 0xd4.

In my testing of an 0xd1 device, pressure works fine (low pressure and
high pressure work great.  Not much middle pressure sensitivity.
Multi-touch will increase pressure reading.  All pretty common
behaviour).

I don't use the pressure in day-to-day usage but do use it to drive
testing of pressure features of some apps/drivers and so don't want to
lose it.

From looking at the touch data on Bamboo's > 0xd4 that people have

emailed me, it looks like pressure data was removed from firmware so a
version of this patch will be useful for those.  But that patch needs
to also change the way it parses the touch data to reduce from 8-bits
to 1-bit.

Chris