alsa-ucm-conf/ucm2/HDA/HiFi-mic.conf

# Generic handling of analog microphones on HDA devices

# Microphone related variables on entry
#   MicType == "hda"    # HDA microphone
#   MicType != "hda"    # other microphone type (AMD 'acp', Intel 'sof-dsp')

# Microphone related variables as used internally
# HDA codecs can offer input source selection (mux) via "Input Source" or
# "Capture Source" with varying options '[PREFIX ]Mic' where PREFIX is
# <Empty>,Internal,Headset,Headphone.
#
# or there can be 'Mic' and optional 'Front Mic' available
#
# There is also third variant - driver supports auto-switching. In
# this case, the '[Prefix ]Mic Boost Volume' controls exists. There are also
# phantom jacks exported by the driver in this case, but it's not
# necessary to use them. Prefixes: <Empty>,Internal,Front
#
# This leads to up to maximum of four possible input devices.

Define.SourceControl ""
Define.MicExtraPriority 0
Define.MicJackControl ""
Define.MicHPJackControl ""
Define.MicHSJackControl ""

# evaluate the microphone jack name
If.micjack {
	Condition {
		Type ControlExists
		Control "iface=CARD,name='Mic Jack'"
	}
	True.Define.MicJackControl "Mic Jack"
}

If.hsjack {
	Condition {
		Type ControlExists
		Control "iface=CARD,name='Headset Mic Jack'"
	}
	True.Define.MicHSJackControl "Headset Mic Jack"
}

If.hpjack {
	Condition {
		Type ControlExists
		Control "iface=CARD,name='Headphone Mic Jack'"
	}
	True.Define.MicHPJackControl "Headphone Mic Jack"
}

If.jacksel1 {
	Condition {
		Type String
		Empty "${var:MicJackControl}"
	}
	True.Define.MicJackControl "${var:MicHPJackControl}"
}

If.jacksel2 {
	Condition {
		Type String
		Empty "${var:MicJackControl}"
	}
	True.Define.MicJackControl "${var:MicHSJackControl}"
}

If.jacksel3 {
	Condition {
		Type String
		Empty "${var:MicHPJackControl}"
	}
	True.Define.MicHPJackControl "${var:MicJackControl}"
}

If.jacksel4 {
	Condition {
		Type String
		Empty "${var:MicHSJackControl}"
	}
	True.Define.MicHSJackControl "${var:MicJackControl}"
}

# determine the name of the source selection enum, if present
If.inputsourcectl {
	Condition {
		Type ControlExists
		Control "name='Input Source'"
	}
	True.Define.SourceControl "Input Source"
	False.If.capturesourcectl {
		Condition {
			Type ControlExists
			Control "name='Capture Source'"
		}
		True.Define.SourceControl "Capture Source"
	}
}

# Extra priority for systems with DMIC presence (MicType != 'hda')
If.micdevs {
	Condition {
		Type String
		String1 "${var:MicType}"
		String2 "hda"
	}
	False.Define.MicExtraPriority 100
}

# Macro HDAMicEnum - Create the SectionDevice for HDA inputs
#
# Arguments:
# DevName - Name of the device (used as SectionDevice."${var:__DevName}"
# Enum - Name of the source/input enum
# Comment - Long name of the SectionDevice
# Jack - Jack control if available
# Priority - CapturePriority
DefineMacro.HDAMicEnum.SectionDevice."${var:__DevName}" {
	Comment "${var:__Comment}"

	EnableSequence [
		cset "name='${var:SourceControl}' '${var:__Enum}'"
	]

	Value {
		CapturePriority "${eval:($__Priority+$MicExtraPriority)}"
		CapturePCM "hw:${CardId}"
		CaptureMixerElem "Capture"
		CaptureVolume "Capture Volume"
		CaptureSwitch "Capture Switch"
		CaptureMasterElem "${var:__Enum} Boost"
	}
	If.jack {
		Condition {
			Type String
			Empty "${var:-__Jack}"
		}
		False.Value.JackControl "${var:__Jack}"
	}

	ConflictingDevice [
		"Mic:hda-int"
		"Mic:hda-hp"
		"Mic:hda"
		"Headset:hda-mic"
	]
}

# Macro HDAMicSwitch - Create the SectionDevice for HDA inputs (switches)
#
# Arguments:
# DevName - Name of the device (used as SectionDevice."${var:__DevName}"
# Name - Name of the controls
# Comment - Long name of the SectionDevice
# Jack - Jack control if available
# Priority - CapturePriority
DefineMacro.HDAMicSwitch.SectionDevice."${var:__DevName}" {
	Comment "${var:__Comment}"

	Value {
		CapturePriority "${eval:($__Priority+$MicExtraPriority)}"
		CapturePCM "hw:${CardId}"
		CaptureMixerElem "${var:__Name}"
		CaptureVolume "${var:__Name} Volume"
		CaptureSwitch "${var:__Name} Switch"
		CaptureMasterElem "${var:__Name} Boost"
		JackControl "${var:-__Jack}"
	}
}

If.micsetup {
	Condition {
		Type String
		Empty "${var:SourceControl}"
	}
	False {
		# the input selection is via ENUM, the possible types are
		# Internal, Headset, Headphone and just 'Mic'
		Macro.in.HDAMicEnum {
			DevName "Mic:hda-int"
			Comment "Internal Stereo Microphone"
			Enum "Internal Mic"
			Priority 100
		}
		Macro.hp.HDAMicEnum {
			DevName "Mic:hda-hp"
			Comment "Headphones Stereo Microphone"
			Enum "Headphone Mic"
			Priority 200
			Jack "${var:MicHPJackControl}"
		}
		Macro.mi.HDAMicEnum {
			DevName "Mic:hda"
			Comment "Stereo Microphone"
			Enum "Mic"
			Priority 300
			Jack "${var:MicJackControl}"
		}
		Macro.hs.HDAMicEnum {
			DevName "Headset:hda-mic"
			Comment "Headset Mono Microphone"
			Enum "Headset Mic"
			Priority 400
			Jack "${var:MicHSJackControl}"
		}
	}
	True.If.autoswitch {
		Condition {
			Type ControlExists
			Control "name='Internal Mic Boost Volume'"
		}
		False {
			# the input selection is via switches, the possible types are
			# Mic and Front Mic
			Macro.mic.HDAMicSwitch {
				DevName "Mic:hda"
				Comment "Stereo Microphone"
				Name "Mic"
				Priority 100
				Jack "${var:MicJackControl}"
			}
			If.fmic {
				Condition {
					Type ControlExists
					Control "name='Front Mic Playback Switch'"
				}
				True.Macro.fmic.HDAMicSwitch {
					DevName "Mic:hda-front"
					Comment "Front Stereo Microphone"
					Name "Front Mic"
					Priority 200
					Jack "Front Mic Jack"
				}
			}
		}
		True {
			# third variant - the driver does auto-switching
			# note that we should assign right Jack controls to
			# allow expose the boost volume
			Macro.mic.HDAMicSwitch {
				DevName "Mic:hda-int"
				Comment "Internal Stereo Microphone"
				Name "Internal Mic"
				Priority 100
			}
			If.mic {
				# external microphone
				Condition {
					Type ControlExists
					Control "name='Mic Boost Volume'"
				}
				True.Macro.mic.HDAMicSwitch {
					DevName "Mic:hda"
					Comment "Stereo Microphone"
					Name "Mic"
					Priority 200
					Jack "${var:MicJackControl}"
				}
			}
		}
	}
}