alsa-lib/src/cards/TRID4DWAVENX.conf

#
# Configuration for the Trident 4D-Wave NX chip
#

pcm.trid4dwavenx_front {
	@args [ CARD DEV SUBDEV ]
	@args.CARD {
		type integer
	}
	@args.DEV {
		type integer
	}
	@args.SUBDEV {
		type integer
		default -1
	}
	type hw
	card $CARD
	device $DEV
	subdevice $SUBDEV
}	

pcm.front_0 {
	@args [ CARD ]
	@args.CARD {
		type integer
	}
	@func refer
	name {
		@func concat
		strings [ "pcm.trid4dwavenx_front:" $CARD ",0,-1" ]
	}
}

pcm.trid4dwavenx_rear {
	@args [ CARD DEV SUBDEV ]
	@args.CARD {
		type integer
	}
	@args.DEV {
		type integer
	}
	@args.SUBDEV {
		type integer
		default -1
	}
	type hooks
	slave.pcm {
		@func concat
		strings [
			"pcm.trid4dwavenx_front:CARD=" $CARD ",DEV=" $DEV ",SUBDEV=" $SUBDEV
		]
	}
	hooks.0 {
		type ctl_elems
		hook_args [
			{
				name "Rear Path"
				index &(subdevice)
				lock true
				preserve true
				value true
			}
			{
				name "PCM Front Playback Volume"
				index &(subdevice)
				lock true
				preserve true
				value [ 0 0 ]
			}
			{
				name "PCM Reverb Playback Volume"
				index &(subdevice)
				lock true
				preserve true
				value [ 127 127 ]
			}
		]
	}
}	

pcm.rear_0 {
	@args [ CARD ]
	@args.CARD {
		type integer
	}
	@func refer
	name {
		@func concat
		strings [ "pcm.trid4dwavenx_rear:" $CARD ]
	}
}

pcm.surround40_0 {
	@args [ CARD ]
	@args.CARD {
		type integer
	}
	type multi
	slaves [
		{
			pcm {
				@func concat
				strings [
					"pcm.trid4dwavenx_front:" $CARD ",0,-1"
				]
			}
			channels 2
		}
		{
			pcm {
				@func concat
				strings [
					"pcm.trid4dwavenx_rear:" $CARD ",0,-1"
				]
			}
			channels 2
		}
	]
	bindings [
		{ slave 0 channel 0 }
		{ slave 0 channel 1 }
		{ slave 1 channel 0 }
		{ slave 1 channel 1 }
	]
}

pcm.iec958_0 {
	@args [ CARD DEV AES0 AES1 AES2 AES3 ]
	@args.CARD {
		type integer
	}
	@args.DEV {
		type integer
	}
	@args.AES0 {
		type integer
	}
	@args.AES1 {
		type integer
	}
	@args.AES2 {
		type integer
	}
	@args.AES3 {
		type integer
	}
	type hooks
	slave.pcm {
		type hw
		card $CARD
		device 2
	}
	hooks.0 {
		type ctl_elems
		hook_args [
			{
				interface PCM
				name "IEC958 Playback PCM Stream"
				value [ $AES0 $AES1 $AES2 $AES3 ]
				device 2
				lock true
				preserve true
			}
		]
	}
}