Re: [PATCH] input: Introduce light-weight contact tracking

Henrik Rydberg
2010-11-07T20:51:40Z

On 11/07/2010 09:44 PM, Rafi Rubin wrote:

> On 11/07/2010 03:18 PM, Henrik Rydberg wrote:
>> Some kernel drivers demand the use of contact tracking for proper
>> filtering and pointer emulation. With one exception, these drivers
>> are limited to a maximum of four concurrent contacts. This patch adds
>> a simple matcher for up to four contacts, with these notable properties:
>
> Tracking in the ntrig driver needs to support a minimum of 6 fingers. I have
> also seen press releases claiming 10+ eventually. I don't know if those devices
> will support tracking in the hardware/firmware.

This is the exception I was talking about. The thing is, I can very well see a
driver supporting four fingers even if the device claims to support six. After
all, getting those four fingers working well will still be a big improvement.

Henrik