RE: [PATCH] Input: Add new driver into Input Subsystem forSynaptics DS4 touchscreen I2C devices

[Alexandra Chin]

From: Henrik Rydberg
Sent: Thursday, October 04, 2012 2:01 AM
> It seems this driver is already present in staging. Comments and
> formatting have been improved in the staging version, but that aside,
> the two versions look very similar.  Why don't you submit fixes to
> that driver instead?

> On a general note, both versions of the driver use MT-A. Please
> convert to MT-B, using the in-kernel tracking if necessary.


Hi Henrik,

Appreciate your suggestion!
We are going to update a patch of using MT-B, because Synaptics devices are 
capable of tracking identifiable contacts (type B).
Thanks for pointing out this.

You are right, there is already a synaptics_i2c_rmi4 driver in staging 
state (drivers/staging/ste_rmi4). 
Actually synaptics_ds4_i2c driver is developed based on synaptics_i2c_rmi4 
driver. The point is that we would want to make a clear definition that 
synaptics_ds4_i2c only targets to DS4 family, so that we can keep maintaining 
driver focusing on DS4 product line (not all Synaptics touchscreen devices are 
DS4 compatible).

We are open to discuss if it is appropriate to retained DS4 driver, and please 
let us know if you have any concerns.

Best Regards,
Alexandra Chin
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