/usr/share/alsa/ucm/msm8974-taiko-mtp-snd-card/VoiceCall is in libasound2-data 1.1.3-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | # There is no mixer setup here - it is handled by PulseAudio's audio HAL module.
SectionVerb {
	EnableSequence [
		cdev "hw:msm8974taikomtp"
		cset "name='SLIMBUS_0_RX Audio Mixer MultiMedia1' 1"
	]
	DisableSequence [
		cdev "hw:msm8974taikomtp"
		cset "name='SLIMBUS_0_RX Audio Mixer MultiMedia1' 0"
	]
	Value {
		CapturePCM "hw:msm8974taikomtp,0"
		PlaybackPCM "hw:msm8974taikomtp,0"
	}
}
SectionDevice."Earpiece" {
	#Name "Earpiece"
	Comment "Earpiece speaker"
	# FIXME
	ConflictingDevice [
		"Headphones"
		"Speaker"
	]
	EnableSequence [
	]
	DisableSequence [
	]
	Value {
		PlaybackChannels "2"
	}
}
SectionDevice."Speaker" {
	#Name "Speaker"
	Comment "Main speaker"
	# FIXME
	ConflictingDevice [
		"Earpiece"
		"Headphones"
	]
	EnableSequence [
	]
	DisableSequence [
	]
	Value {
		PlaybackChannels "2"
	}
}
SectionDevice."Headphones" {
	#Name "Headphones"
	Comment "Headphones"
	# FIXME
	ConflictingDevice [
		"Earpiece"
		"Speaker"
	]
	EnableSequence [
	]
	DisableSequence [
	]
	Value {
		PlaybackChannels "2"
	}
}
SectionDevice."Headset" {
	#Name "Headset"
	Comment "Headset Microphone"
	ConflictingDevice [
		"Handset"
	]
	EnableSequence [
	]
	DisableSequence [
	]
	Value {
		CaptureChannels "1"
	}
}
SectionDevice."Handset" {
	#Name "Handset"
	Comment "Handset Microphone"
	ConflictingDevice [
		"Headset"
	]
	EnableSequence [
	]
	DisableSequence [
	]
	Value {
		CaptureChannels "1"
	}
}
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