sof-rt5682: Add platform detection and set dmic pcm

sof-rt5682/HiFi.conf

@@ -106,26 +106,26 @@ Macro [
 	}
 ]
 
-#SectionDevice."Mic" {
-#	Comment "Internal Microphone"
-#
-#	Value {
-#		CapturePrioirty 100
-#		CapturePCM "hw:${CardId},99"
-#		CaptureChannels 4
-#	}
-#	Macro.pcm_split.SplitPCMDevice {
-#		Name "dmic_stereo_in"
-#		Direction Capture
-#		Device 99
-#		HWChannels 4
-#		Channels 2
-#		Channel0 2
-#		Channel1 3
-#		ChannelPos0 FL
-#		ChannelPos1 FR
-#	}
-#}
+SectionDevice."Mic" {
+	Comment "Internal Microphone"
+
+	Value {
+		CapturePrioirty 100
+		CapturePCM "hw:${CardId},99"
+		CaptureChannels 4
+	}
+	Macro.pcm_split.SplitPCMDevice {
+		Name "dmic_stereo_in"
+		Direction Capture
+		Device ${var:dmicpcm}
+		HWChannels 4
+		Channels 2
+		Channel0 0
+		Channel1 1
+		ChannelPos0 FL
+		ChannelPos1 FR
+	}
+}
 
 # TODO: detect hdmi configuration
 

sof-rt5682/platform.conf

@@ -0,0 +1,49 @@
+# platform detection
+
+If.cml {
+	Condition {
+		Type String
+		String1 "${sys:class/dmi/id/product_family}"
+		String2 "Google_Hatch"
+	}
+	True [ 
+		Define.cml y
+		Define.dmicpcm 1
+	]
+}
+
+If.tgl {
+	Condition {
+		Type String
+		String1 "${sys:class/dmi/id/product_family}"
+		String2 "Google_Volteer"
+	}
+	True [ 
+		Define.tgl y
+		Define.dmicpcm 99
+	]
+}
+
+If.jsl {
+	Condition {
+		Type String
+		String1 "${sys:class/dmi/id/product_family}"
+		String2 "Google_Dedede"
+	}
+	True [ 
+		Define.jsl y
+		Define.dmicpcm 5
+	]
+}
+
+If.adl {
+	Condition {
+		Type RegexMatch
+		Regex "^Google_(Brya|Brask|Nissa)$"
+		String "${sys:class/dmi/id/product_family}"
+	}
+	True [ 
+		Define.adl y
+		Define.dmicpcm 99
+	]
+}