Re: HID: Dead ./debug/hid/xxx/events

On Wed, Nov 16, 2011 at 9:40 AM, Cedric Sodhi [off-list ref] wrote:

Thanks to Benjamin's help and his neat patch which allows tempering with
quirks through sysfs, I got the device

eGalax 0eef:a001

to work. It works with the quirks

MT_QUIRK_SLOT_IS_CONTACTID | MT_QUIRK_ALWAYS_VALID ( = 18 )

so, using Benjamin's interface:

(1) Adding the device with
$ cd '/sys/modules/hid_multitouch/driver/hid:hid-multitouch'
$ echo "3 0eef a001 1" > new_id

(2) Setting the quirks with
$ echo 18 > '0003:0EEF:A001.0001/quirks'

That's it. The device works!

Benjamin, do you have a take away from this?  We are setting quirks to
0x62 which should same as 0x12 for most purposes.  Combine this with
the Acer eGalax patch and my guess is its .maxcontacts = 2 thats
hurting things?

If so, do you have enough report descriptors to know if we can remove
it for all or if we need to create an MT_CLS_EGALAX_HAS_MAXCONTACTS?
My guess is for the ones that have correct MAXCONTACTS, they also have
valid logical X/Y sizes and so we can remote that quirk as well.  At
least this one does.

Chris

regards,
Cedric