linux-kernel - Re: dmatest to use synopsys dma driver (dw

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Date:	Tue, 02 Oct 2012 13:11:33 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Satendra Pratap <satendra.pratap@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: dmatest to use synopsys dma driver (dw_dmac.c)

On Thu, 2012-06-07 at 10:03 +0000, Satendra Pratap wrote: 
> We have Synopsys DMAC controller on our SoC and are trying to use open source
> dw_dmac.c driver. We are using linux-3.2.2 kernel but it seems dw_dmac.c does 
> not have any support for it. Later I checked out that its been added in later 
> versions of dw_dmac.c so I backported dw_dmac from linux-3.4 to linux-3.2.2.
> I have tried using dmatest to validate dw_dmac.c driver. I just compile kernel 
> with dw_dmac.c and with dmatest support then I test it. (I think I need not to 
> modify dmatest in order wo work with dw_dmac).
> While testing I get crashes with the ported driver (from linux-3.4 to linux-
> 3.2.2) but with the original driver in linux-3.2.2 I get no crashes but "test 
> timed out"


> Any help is greatly appreciated. It would be of very much help is some one could 
> (who has used dw_dmac.c) could share their code to use dw_dmac.c.

I published all my patches already here in the mailing list. Part of
them is under review, but another part has been pushed to the
linux-next.

I highly encourage you to try most recent version from the linux-next.


-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy
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