From: Rafal Redzimski <rafal.f.redzimski@intel.com>
Date: Fri, 19 Dec 2014 00:44:30 +0000 (+0800)
Subject: ALSA: hda_controller: Separate stream_tag for input and output streams.
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~354^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=93e3423e6ba4b0ddaf056ecbdf5bc46f18f41deb;p=pandora-kernel.git

ALSA: hda_controller: Separate stream_tag for input and output streams.

Implemented separate stream_tag assignment for input and output streams.
According to hda specification stream tag must be unique throughout the
input streams group, however an output stream might use a stream tag
which is already in use by an input stream. This change is necessary
to support HW which provides a total of more than 15 stream DMA engines
which with legacy implementation causes an overflow on SDxCTL.STRM
field (and the whole SDxCTL register) and as a result usage of
Reserved value 0 in the SDxCTL.STRM field which confuses HDA controller.

Signed-off-by: Rafal Redzimski <rafal.f.redzimski@intel.com>
Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

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