Re: pxa2xx_spi suspend/resume

[Daniel Ribeiro <drwyrm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Em Qui, 2009-03-12 às 10:38 -0400, Ned Forrester escreveu:
> You may want to check DCSR to make sure the run bits are set for the
> assigned dma channels.  You will probably need more printk's just to
> find out what channels were assigned; they are assigned in
> pxa2xx_spi_probe().  It's hard to believe that these would not be set,
> as it is done pump_transfers(), and you know execution is going there.

Indeed, i tried using the driver on PIO mode, and suspend/resume works!

Here is what i get with a little more debug and DMA enabled..

SUSPEND DRCMR_TX=00000084 DRCMR_RX=00000084
RESUME DRCMR_TX=00000000 DRCMR_RX=00000000

Should i cook a patch to store DRCMR on suspend and restore on resume?
Or is the proper fix something else?

-- 
Daniel Ribeiro


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