Re: Trackpoint (psmouse) dead after suspend/resume (S3)

[Nathan Bryant <nbryant-p32f3XyCuykqcZcGjlUOXw@public.gmane.org>]

Pavel Machek wrote:
> Hi!
> 
> 
>>2.5.xx: keyboard and trackpoint dead, reloading psaux module fixes both
>>2.6.4: both devices work, no reloading necessary
>>2.6.7: keyboard works, trackpoint dead, reloading psmouse doesn't help
>>
>>I've poked around a bit and it seems that all writes to the AUX-port
>>times out, this causes the psmouse to disconnect.
>>
>>Any suggestions appreciated, Ole
> 
> 
> See if psmouse.proto=bare helps?

maybe also i8042.reset?

Ole, is it losing interrupts or is it completely dead? I know that serio 
only has knowledge of the generic i8042 device; in most cases it doesn't 
know a lot about initializing multi-function controller chips, such as 
the Winbond. The Winbond documentation is a little obscure on this 
subject - OK, a lot obscure - depending on which chip docs you look at, 
it only lists the register maps and doesn't describe the I/O port 
accesses needed to set the registers. However, if you look at 
parport_pc.c, you can see how to access the registers.

In any case, psmouse is just a shim between input and serio, not the 
driver itself, so as you have seen, reloading it doesn't help in most cases.


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