Add a conf file for the VC4-HDMI sound card.
Signed-off-by: Boris Brezillon boris.brezillon@free-electrons.com --- Hi,
This patch is adding a card config file for the audio sound card whose driver has been submitted here [1] (not accepted yet).
Since I am a total newbie to the alsa world, I'd like to get some feedback on this patch.
Also, the card only supports 2 to 8 channels, and I wonder if we should add a plug element to support mono streams, and where this element should be added (after or before the iec958 element).
Regards,
Boris
[1]https://www.spinics.net/lists/arm-kernel/msg565182.html
src/conf/cards/Makefile.am | 1 + src/conf/cards/aliases.conf | 1 + src/conf/cards/vc4-hdmi.conf | 64 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 66 insertions(+) create mode 100644 src/conf/cards/vc4-hdmi.conf
diff --git a/src/conf/cards/Makefile.am b/src/conf/cards/Makefile.am index e8b530e80a8f..00999f0186d6 100644 --- a/src/conf/cards/Makefile.am +++ b/src/conf/cards/Makefile.am @@ -51,6 +51,7 @@ cfg_files = aliases.conf \ TRID4DWAVENX.conf \ USB-Audio.conf \ YMF744.conf \ + vc4-hdmi.conf \ VIA686A.conf \ VIA8233.conf \ VIA8233A.conf \ diff --git a/src/conf/cards/aliases.conf b/src/conf/cards/aliases.conf index 60f9d26974fd..18a920f41e46 100644 --- a/src/conf/cards/aliases.conf +++ b/src/conf/cards/aliases.conf @@ -56,6 +56,7 @@ AV200 cards.CMI8788 CMI8786 cards.CMI8788 CMI8787 cards.CMI8788 pistachio cards.pistachio-card +VC4-HDMI cards.vc4-hdmi
confdir:pcm/default.conf confdir:pcm/dmix.conf diff --git a/src/conf/cards/vc4-hdmi.conf b/src/conf/cards/vc4-hdmi.conf new file mode 100644 index 000000000000..027804a145d1 --- /dev/null +++ b/src/conf/cards/vc4-hdmi.conf @@ -0,0 +1,64 @@ +# +# Configuration for the VC4-HDMI sound card using software IEC958 +# subframe conversion +# + +confdir:pcm/front.conf + +vc4-hdmi.pcm.front.0 { + @args [ CARD ] + @args.CARD { + type string + } + type hw + card $CARD +} + +# default with dmix +vc4-hdmi.pcm.default { + @args [ CARD ] + @args.CARD { + type string + } + type asym + playback.pcm { + type plug + slave.pcm { + @func concat + strings [ "dmix:" $CARD ] + } + } +} + +confdir:pcm/iec958.conf + +vc4-hdmi.pcm.iec958.0 { + @args [ CARD AES0 AES1 AES2 AES3 ] + @args.CARD { + type string + } + @args.AES0 { + type integer + } + @args.AES1 { + type integer + } + @args.AES2 { + type integer + } + @args.AES3 { + type integer + } + type iec958 + slave { + format IEC958_SUBFRAME_LE + pcm { + type plug + slave.pcm { + type hw + card $CARD + } + } + } + status [ $AES0 $AES1 $AES2 $AES3 ] +}