Messages in this thread | | | From | Tomasz Figa <> | Subject | Re: [PATCH 12/18] ARM: s3c64xx: Add support for DMA using generic amba-pl08x driver | Date | Tue, 13 Aug 2013 23:11:25 +0200 |
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On Tuesday 13 of August 2013 21:35:36 Mark Brown wrote: > On Tue, Aug 13, 2013 at 01:10:02PM -0700, Tomasz Figa wrote: > > On Tuesday 13 of August 2013 18:52:51 Mark Brown wrote: > > > On Sun, Aug 11, 2013 at 07:59:24PM +0200, Tomasz Figa wrote: > > > > +#define pl330_filter pl08x_filter_id > > > > > > So, this is pretty fun and probably not going to play too nicely for > > > multiplatform kernels... > > > > Yes, this is really funny and only shows the brokenness of current > > channel filtering mechanism used in DMA engine subsystem. Fortunately > > this is quite irrelevant to multiplatform kernels, because no users > > of it will be compiled in, since it's used only for legacy (non-DT) > > channel filtering. > Well, the thing here is more about the fact that the match function is > silently being hijacked - it should be possible to do this in the device > registrations. I'd expect you could get a non-DT kernel which was > affected, but you'd probably have to try.
Let me see what I can do to improve things for now.
> > Anyway, I would happily redesign and rewrite the DMA engine channel > > matching completely to make it much more sane, but I guess I would > > need an ack from Vinod and Dan to do it. > > I'd be really keen to get this code merged sooner rather than later for > ASoC development so if there's a way to do it separately to fixing the > filtering that'd be good.
I fully agree on this. I still have other things to work on, so the possible redesign of channel filtering would not probably happen before 3.12 merge window closes.
Best regards, Tomasz
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