From: Lars-Peter Clausen <lars@metafoo.de>
Date: Sat, 11 Jan 2014 13:02:19 +0000 (+0100)
Subject: ASoC: generic-dmaengine-pcm: Check DMA residue granularity
X-Git-Tag: v3.14-rc1~143^2^2~1^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=478028e088d6a94666d8a776be2cd2291faf3bbd;p=pandora-kernel.git

ASoC: generic-dmaengine-pcm: Check DMA residue granularity

The dmaengine framework now exposes the granularity with which it is able to
report the transfer residue for a certain DMA channel. Check the granularity in
the generic dmaengine PCM driver and
	a) Set the SNDRV_PCM_INFO_BATCH if the granularity is per period or worse.
	b) Fallback to the (race condition prone) period counting if the driver does
	not support any residue reporting.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
---

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