video-buf: physically contiguous buffers

[Mauro Carvalho Chehab <mchehab (at) infradead.org>]

Kevin,

Em Ter, 2006-03-28 às 10:58 -0800, Kevin Hilman escreveu:

> > 3) What should config() callback do? What happens if it is null?
> 
> The job of buf_config() is to set the 'boff' value to the physical address of 
> the driver-allocated buffers.
It would be interesting to have an example of its usage at kernel. The
best place is at vivi.c code (it is an example code), that emulates a
real device. Currently, it relies at scatter/gather info to fill the
videobuf (in a very non-optimized way, but just works fine and serves as
a demonstration on how to use it). This will also allow me to test the
code before commiting.

Cheers, 
Mauro.

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