Comment # 15 on bug 1030001 from Takashi Iwai

(In reply to Roger Whittaker from comment #14)
> We may be in luck here with ic_type.
> 
> When the module gets loaded we see:
> 
> [ 2478.860692] elan_i2c i2c-ELAN0600:00: Elan Touchpad: Module ID: 0x004e
>                Firmware: 0x0001
>                Sample: 0x0003
>                IAP: 0x0009
>                Elan Touchpad Extra Information:
>                    Max ABS X,Y:   2738,1791
>                    Width X,Y:   152,149
>                    Resolution X,Y:   31,31 (dots/mm)
>                    ic type: 0x9
>                    info pattern: 0x0
> 
> (Here I'm using the 1.6.3 version mentioned above in comment#9, not the
> version in the current kernel.)
> 
> For product_id:
> 
> # find /sys | grep -i elan | grep product
> /sys/devices/pci0000:00/INT3433:00/i2c-7/i2c-ELAN0600:00/input/input133/id/
> product
> /sys/devices/pci0000:00/INT3433:00/i2c-7/i2c-ELAN0600:00/product_id
> 
> The first of these contains 004e and the second 78.0 so I'm assuming I need
> 0x4e in the code.

Heh, the correct one is the latter :)  The sysfs format of this entry has an
extra ".0" by some reason.  So it's 0x78.