Re: USB device DMA support on OMAP2

["Kyungmin Park" <kmpark@infradead.org>]

On 11/5/07, David Brownell <david-b@pacbell.net> wrote:
> > The current omap udc dosen't support the DMA mode
>
> It most certainly does!!  I think you it has DMA issues on OMAP2.
>

Ah, Yes, OMAP1 supports the DMA mode. It means the OMAP2 DMA support.

>
> > and it has some problem at setup time on OMAP2 with previous patch file.
> > I found that the code assumes bulk out required the big data transfer.
> > But MODE SELECT(6) sent the only 24 bytes. it makes a problem.
> > So I implement the small packets handling for it.
> >
> > It is tested with both linux and windows.
> >
> > Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
>
> I'll have a look at it, thanks.
>
> Is this aginst the linux-omap tree, or current kernel.org code?
> (There _shouldn't_ be any differences, but I've not checked in
> some time now and such issues do creep in from time to time.)
>

There's some difference related with double buffering.
It's against the latest kernel code. I checked it.

Thank you,
Kyungmin Park