From: Grant Likely <grant.likely@secretlab.ca>
Date: Sat, 7 Nov 2009 08:33:53 +0000 (-0700)
Subject: ASoC/mpc5200: Track DMA position by period number instead of bytes
X-Git-Tag: v2.6.33-rc1~390^2~1^2~44
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f159d720b89f2a6c5ae8a8cc54823933a58120b;p=pandora-kernel.git

ASoC/mpc5200: Track DMA position by period number instead of bytes

All DMA blocks are lined up to period boundaries, but the DMA
handling code tracks bytes instead.  This patch reworks the code
to track the period index into the DMA buffer instead of the
physical address pointer.  Doing so makes the code simpler and
easier to understand.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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