[PATCH] add detection of Tablet PCs with WACOM tablet devices

[Danny Kukawka]

Hi, 

this patch add detection of Tablet PCs with WACOM tablet devices to HAL. 

The kernel export the pnp.id (WACf00{4,5,6}) and port/irq from bios/dsdt to 
/sys/devices/pnp*/ for the internal serial tablet. The device must be set with 
setserial to /dev/ttyS* manually. 

To get and provide the needed information for setserial we parse the files in 
in the sys_path and if the pnp.id match we add them to the device. If a 
tablet pc is detected, we also correct the form factor of the computer 
(system.formfactor) to 'laptop' and add a new key 'system.formfactor.subtype 
= tabletpc'.

With this patch everyone with a tablet pc can easy add a fdi file to parse the 
port/iq of the tablet and add a callout to execute the needed setserial 
command.

Please review.

Cheers,

Danny

 ids.c     |    3 +++
 physdev.c |   40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
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