Add VIA8237 config

Added the confit file for VIA8237 or later chips.
It reroutes 5.1 output where VIA8233 doesn't need it.

src/conf/cards/Makefile.am

@@ -35,6 +35,7 @@ cfg_files = aliases.conf \
 	VIA686A.conf \
 	VIA8233.conf \
 	VIA8233A.conf \
+	VIA8237.conf \
 	VX222.conf \
 	VXPocket.conf \
 	VXPocket440.conf \

src/conf/cards/VIA8237.conf

@@ -0,0 +1,172 @@
+#
+# Configuration for the VIA8237 chip with 4/6 multi-channel support
+#
+
+<confdir:pcm/front.conf>
+
+VIA8237.pcm.front.0 {
+	@args [ CARD ]
+	@args.CARD {
+		type string
+	}
+	type hw
+	card $CARD
+	device 0
+}	
+
+<confdir:pcm/surround40.conf>
+
+VIA8237.pcm.surround40.0 {
+	@args [ CARD ]
+	@args.CARD {
+		type string
+	}
+	type hooks
+	slave.pcm {
+		type hw
+		card $CARD
+		device 1
+	}
+	hooks.0 {
+		type ctl_elems
+		hook_args [
+#			{
+#				name "Line-In As Surround"
+#				device 0
+#				preserve true
+#				value true
+#				lock true
+#				optional true
+#			}
+			{
+				name "Surround Down Mix"
+				device 0
+				preserve true
+				value off
+				lock true
+				optional true
+			}
+		]
+	}
+}
+
+<confdir:pcm/surround41.conf>
+<confdir:pcm/surround50.conf>
+<confdir:pcm/surround51.conf>
+
+VIA8237.pcm.surround51.0 {
+	@args [ CARD ]
+	@args.CARD {
+		type string
+	}
+	type route
+	ttable.0.0 1
+	ttable.1.1 1
+	ttable.2.4 1
+	ttable.3.5 1
+	ttable.4.2 1
+	ttable.5.3 1
+	slave.pcm {
+		type hooks
+		slave.pcm {
+			type hw
+			card $CARD
+			device 1
+		}
+		hooks.0 {
+			type ctl_elems
+			hook_args [
+#				{
+#					name "Line-In As Surround"
+#					device 0
+#					preserve true
+#					value true
+#					lock true
+#					optional true
+#				}
+#				{
+#					name "Mic As Center/LFE"
+#					device 0
+#					preserve true
+#					value true
+#					lock true
+#					optional true
+#				}
+				{
+					name "Surround Down Mix"
+					device 0
+					preserve true
+					value off
+					lock true
+					optional true
+				}
+				{
+					name "Center/LFE Down Mix"
+					device 0
+					preserve true
+					value off
+					lock true
+					optional true
+				}
+			]
+		}
+	}
+	slave.channels 6
+}
+
+<confdir:pcm/iec958.conf>
+
+VIA8237.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 hooks
+	slave.pcm {
+		type hw
+		card $CARD
+		device 0
+		subdevice 3
+	}
+	hooks.0 {
+		type ctl_elems
+		hook_args [
+			{
+				name "IEC958 Playback AC97-SPSA"
+				lock true
+				preserve true
+				value 3
+			}
+			{
+				name "IEC958 Playback Default"
+				lock true
+				preserve true
+				value [ $AES0 $AES1 $AES2 $AES3 ]
+			}
+			{
+				name "IEC958 Playback Switch"
+				lock true
+				preserve true
+				value true
+			}
+			{
+				name "IEC958 Output Switch"
+				lock true
+				preserve true
+				value true
+			}
+		]
+	}
+}