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author | Rafal Redzimski <rafal.f.redzimski@intel.com> | 2014-12-19 08:44:30 +0800 |
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committer | Takashi Iwai <tiwai@suse.de> | 2014-12-26 12:21:21 +0100 |
commit | 93e3423e6ba4b0ddaf056ecbdf5bc46f18f41deb (patch) | |
tree | f1c490d8bdcc06665c914ebe77f5b7f10c6caf19 /sound/pci/hda/hda_intel.c | |
parent | 97bf6af1f928216fd6c5a66e8a57bfa95a659672 (diff) | |
download | op-kernel-dev-93e3423e6ba4b0ddaf056ecbdf5bc46f18f41deb.zip op-kernel-dev-93e3423e6ba4b0ddaf056ecbdf5bc46f18f41deb.tar.gz |
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>
Diffstat (limited to 'sound/pci/hda/hda_intel.c')
0 files changed, 0 insertions, 0 deletions