ucm2: Qualcomm: add Fairphone (Gen. 6) (milos) profile

Add a UCM profile for the Fairphone (Gen. 6) (SM7635 "milos") as used
on postmarketOS mainline: Speaker (2x Awinic AW88261 on Senary MI2S,
MultiMedia1 playback) and the handset microphone (WCD9378 AMIC1 via the
TX macro, MultiMedia2 capture). Tested on the phone with PipeWire in a
Plasma Mobile session.

The layout follows conf.d/qcm6490: real files under
Qualcomm/milos/Fairphone-Gen6/, a card-name symlink in conf.d/milos/.
Content is identical to the files tested on the device except the
verb File path, which follows the new location.

Assisted-by: Claude:claude-fable-5
Signed-off-by: Jorijn van der Graaf <jorijnvdgraaf@catcrafts.net>

ucm2/Qualcomm/milos/Fairphone-Gen6/Fairphone-Gen6.conf

@@ -0,0 +1,11 @@
+Syntax 4
+
+SectionUseCase."HiFi" {
+	File "/Qualcomm/milos/Fairphone-Gen6/HiFi.conf"
+	Comment "HiFi quality Music"
+}
+
+BootSequence [
+	cset "name='Amplifier L PCM Playback Volume' 352"
+	cset "name='Amplifier R PCM Playback Volume' 352"
+]

ucm2/Qualcomm/milos/Fairphone-Gen6/HiFi.conf

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+SectionVerb {
+	Value {
+		TQ "HiFi"
+	}
+	EnableSequence [
+		cset "name='SEN_MI2S_RX Audio Mixer MultiMedia1' 1"
+		cset "name='MultiMedia2 Mixer TX_CODEC_DMA_TX_3' 1"
+	]
+}
+
+SectionDevice."Speaker" {
+	Comment "Internal stereo speakers (2x AW88261)"
+
+	EnableSequence [
+		cset "name='Amplifier L PCM Playback Volume' 352"
+		cset "name='Amplifier R PCM Playback Volume' 352"
+	]
+
+	DisableSequence [
+		cset "name='Amplifier L PCM Playback Volume' 0"
+		cset "name='Amplifier R PCM Playback Volume' 0"
+	]
+
+	Value {
+		PlaybackPriority 100
+		PlaybackPCM "hw:${CardId},0"
+	}
+}
+
+SectionDevice."Mic" {
+	Comment "Handset microphone (AMIC1, bottom edge)"
+
+	# WCD9378 ADC1 -> SoundWire -> TX macro DEC0 -> TX_CODEC_DMA_TX_3.
+	# 'TX SMIC MUX0' takes the mux item name SWR_MIC0, not the
+	# SWR_INPUT0 widget it routes from.
+	EnableSequence [
+		cset "name='ADC1 MUX' CH1_AMIC1"
+		cset "name='ADC1 Switch' 1"
+		cset "name='ADC1 Volume' 12"
+		cset "name='TX0 MODE' ADC_NORMAL"
+		cset "name='TX0 SEQUENCER Switch' 1"
+		cset "name='TX SMIC MUX0' SWR_MIC0"
+		cset "name='TX DEC0 MUX' SWR_MIC"
+		cset "name='TX_DEC0 Volume' 84"
+		cset "name='TX_AIF1_CAP Mixer DEC0' 1"
+	]
+
+	DisableSequence [
+		cset "name='TX_AIF1_CAP Mixer DEC0' 0"
+		cset "name='TX0 SEQUENCER Switch' 0"
+		cset "name='ADC1 Switch' 0"
+		cset "name='TX SMIC MUX0' ZERO"
+	]
+
+	Value {
+		CapturePriority 100
+		CapturePCM "hw:${CardId},1"
+	}
+}

ucm2/conf.d/milos/Fairphone (Gen. 6).conf

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+../../Qualcomm/milos/Fairphone-Gen6/Fairphone-Gen6.conf