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From: Robert Jarzmik <robert.jarzmik@free.fr>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>, dbaryshkov@gmail.com
Cc: alsa-devel@alsa-project.org
Subject: pxa2xx-pcm and dma_request
Date: Tue, 12 May 2009 23:06:22 +0200	[thread overview]
Message-ID: <87vdo6c9pt.fsf@free.fr> (raw)

Hi Mark and Dimitry,

I've been playing for some time with DMA on the PXA series. I was wondering if
the behaviour of pxa2xx-pcm is correct.

As far as I understand, in an asoc context, the __pxa2xx_pcm_open() is called,
while in "arm context", pxa2xx_pcm_open() is called, which calls
__pxa2xx_pcm_open().

This was introduced by commit a6d77317678148c973bb0131cc5a3a772f756d23 I think.

One main difference is that in "arm context", pxa_dma_request() is called, while
in "asoc context", it is not.

I'd like one of you to cross-check, as I must admit I'm not following all the
impacts of the pcm code split-up.

Cheers.

--
Robert

             reply	other threads:[~2009-05-12 21:06 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-12 21:06 Robert Jarzmik [this message]
2009-05-12 22:06 ` pxa2xx-pcm and dma_request Mark Brown
2009-05-13  4:43 ` Dmitry Eremin-Solenikov

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