[PATCH alsa-lib 2/3] chtnau8824: Add support for laptops using stereo DMICs

[Hans de Goede]

The Medion E2228T uses a NAU8824 codec combined with stereo
DMICs, add support for this.

Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 ucm2/chtnau8824/HiFi.conf        | 16 +++++++++++++++-
 ucm2/codecs/nau8824/DMIC1_2.conf | 30 ++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 ucm2/codecs/nau8824/DMIC1_2.conf

diff --git a/ucm2/chtnau8824/HiFi.conf b/ucm2/chtnau8824/HiFi.conf
index d7a5f63..105f360 100644
--- a/ucm2/chtnau8824/HiFi.conf
+++ b/ucm2/chtnau8824/HiFi.conf
@@ -1,4 +1,5 @@
 Define.Speaker "Speaker"
+Define.Mic "InternalMic"
 
 If.cfg-mspk {
 	Condition {
@@ -11,6 +12,19 @@ If.cfg-mspk {
 	}
 }
 
+If.cfg-mic {
+	Condition {
+		Type RegexMatch
+		String "${CardLongName}"
+		# Medion E22??T models put DMIC in their product version
+		# when using DMICs
+		Regex "(MEDION-E22..T.*-DMIC-)"
+	}
+	True {
+		Define.Mic "DMIC1_2"
+	}
+}
+
 SectionVerb {
 
 	Value {
@@ -42,7 +56,7 @@ If.cfg-includes {
 		Include.spk.File "/codecs/nau8824/${var:Speaker}.conf"
 		Include.hp.File "/codecs/nau8824/HeadPhones.conf"
 
-		Include.mic.File "/codecs/nau8824/InternalMic.conf"
+		Include.mic.File "/codecs/nau8824/${var:Mic}.conf"
 		Include.hsmic.File "/codecs/nau8824/HeadsetMic.conf"
 	}
 }
diff --git a/ucm2/codecs/nau8824/DMIC1_2.conf b/ucm2/codecs/nau8824/DMIC1_2.conf
new file mode 100644
index 0000000..f54f671
--- /dev/null
+++ b/ucm2/codecs/nau8824/DMIC1_2.conf
@@ -0,0 +1,30 @@
+# Stereo DMICs on the DMIC1 and DMIC2 inputs
+
+SectionDevice."Mic" {
+	Comment "Internal Digital Microphones"
+
+	Value {
+		CapturePriority 200
+		CapturePCM "hw:${CardId}"
+	}
+
+	ConflictingDevice [
+		"Headset"
+	]
+
+	EnableSequence [
+		# Note needs to be swapped / swap is deliberate!
+		cset "name='ADC CH0 Select' 1"
+		cset "name='ADC CH1 Select' 0"
+
+		cset "name='Int Mic Switch' on"
+		cset "name='DMIC1 Enable Switch' on"
+		cset "name='DMIC2 Enable Switch' on"
+	]
+
+	DisableSequence [
+		cset "name='Int Mic Switch' off"
+		cset "name='DMIC1 Enable Switch' off"
+		cset "name='DMIC2 Enable Switch' off"
+	]
+}
-- 
2.28.0