lkml.org 
[lkml]   [2012]   [Mar]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Date
    SubjectRE: [PATCH] ep93xx: Implement double buffering for M2M DMA channels
    On Friday, March 23, 2012 12:05 AM, Mika Westerberg wrote:
    > On Thu, Mar 22, 2012 at 09:19:10PM -0500, H Hartley Sweeten wrote:
    >
    >> Did you test this patch or just review it?
    >
    > I tested and reviewed it.

    OK. What kernel? My tests so far have been with 3.3.

    >> On my system it doesn't work. I think it has something to do with the
    >> changes to m2m_hw_interrupt but I haven't tracked it down yet.
    >>
    >> It looks like what's missing is a:
    >>
    >> edmac->edma->hw_submit(edmac);
    >>
    >> But, maybe that's not needed with double buffering?
    >
    > Did you try without your patch and adding my VIC hack? That's what I did when
    > I first got this patch and I saw no problems. I tested with audio (M2P),
    > mmc_spi (M2M) and dmatest (M2M).

    No, I have not applied your VIC hack.

    Until we get a working solution, without any hacks, I don't want this to go in.

    Regards,
    Hartley



    \
     
     \ /
      Last update: 2012-03-23 17:13    [W:0.092 / U:125.900 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site