tree ff82905dea6d8578d300a6e98ae8d281c74e7437
parent 90a66834d06ab3b382da764320694ba19d82e6c0
author Arnaud Pouliquen <arnaud.pouliquen@st.com> 1446800510 +0100
committer Lyon Wang <lyon.wang@nxp.com> 1545187832 +0800

iec61937: force hw_param channels to stereo

In case of pass-through, iec frames are sent over a stereo PCM
stream. So alsa device should be configured with channels = 2.
This is needed to be compatible with SPDIF electrical/optical output
that supports only stereo in PCM mode and up to 8 channels in iec61937 mode.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>