sof/tools/topology/topology2/cavs-mixin-mixout-ssp.conf

#
# Pipeline definitions
#
# PCM0 ---> gain ----> Mixin ----> Mixout ----> gain ----> SSP0
# PCM1 ---> gain ----> Mixin ----> Mixout ----> gain ----> SSP1
#

# Pipeline ID:1 PCM ID: 0
Object.Pipeline {
	# playback pipelines
	host-copier-gain-mixin-playback [
		{
			index	$HEADSET_HOST_PIPELINE_ID

			Object.Widget.host-copier.1 {
				stream_name	'$HEADSET_PLAYBACK_PCM_STREAM_NAME'
				pcm_id		$HEADSET_PCM_ID
			}
			Object.Widget.gain.1 {
				Object.Control.mixer.1 {
					name	'Pre Mixer $HEADSET_PCM_NAME Playback Volume'
				}
			}
		}
		{
			index	$SPEAKER_HOST_PIPELINE_ID
			core_id	$SPEAKER_PCM_CORE_ID

			Object.Widget.host-copier.1 {
				stream_name	'$SPEAKER_PLAYBACK_PCM_STREAM_NAME'
				pcm_id		$SPEAKER_PCM_ID
			}
			Object.Widget.gain.1 {
				Object.Control.mixer.1 {
					name	'Pre Mixer $SPEAKER_PCM_NAME Playback Volume'
				}
			}
			Object.Widget.pipeline.1 {
				core	$SPEAKER_PCM_CORE_ID
			}
		}
	]

	mixout-gain-dai-copier-playback [
		{
			index	$HEADSET_DAI_PIPELINE_ID

			Object.Widget.dai-copier.1 {
				dai_index	$HEADSET_SSP_DAI_INDEX
				dai_type	"SSP"
				copier_type	"SSP"
				stream_name	"$HEADSET_CODEC_NAME"
				node_type	$I2S_LINK_OUTPUT_CLASS
				IncludeByKey.SSP_HS_FMT_24 {
				"true"	{
					Object.Base.output_audio_format [
						{
							out_bit_depth		32
							out_valid_bit_depth	24
							out_sample_type		$SAMPLE_TYPE_LSB_INTEGER
							out_fmt_cfg		"$[($out_channels | ($out_valid_bit_depth * 256))]"
						}
					]
					}
				"false"	{
					Object.Base.output_audio_format [
						{
							out_bit_depth		32
							out_valid_bit_depth	32
						}
					]
					}
				}
			}

			Object.Widget.gain.1 {
				Object.Control.mixer.1 {
					name	'Post Mixer $HEADSET_PCM_NAME Playback Volume'
				}
			}
		}
		{
			index   $SPEAKER_DAI_PIPELINE_ID
			core_id $SPEAKER_PCM_CORE_ID

			Object.Widget.dai-copier.1 {
				dai_index	$SPEAKER_SSP_DAI_INDEX
				dai_type	"SSP"
				copier_type	"SSP"
				stream_name	"$SPEAKER_CODEC_NAME"
				node_type	$I2S_LINK_OUTPUT_CLASS
				IncludeByKey.SSP_SPK_FMT_24 {
				"true"	{
					Object.Base.output_audio_format [
						{
							out_bit_depth		32
							out_valid_bit_depth	24
							out_sample_type		$SAMPLE_TYPE_LSB_INTEGER
							out_fmt_cfg		"$[($out_channels | ($out_valid_bit_depth * 256))]"
						}
					]
					}
				"false"	{
					Object.Base.output_audio_format [
						{
							out_bit_depth		32
							out_valid_bit_depth	32
						}
					]
					}
				}
			}

			Object.Widget.gain.1 {
				Object.Control.mixer.1 {
					name	'Post Mixer $SPEAKER_PCM_NAME Playback Volume'
				}
			}

			Object.Widget.pipeline.1 {
				core $SPEAKER_PCM_CORE_ID
			}
		}
	]
}

Object.Base.route [
	{
		source	"gain.$HEADSET_DAI_PIPELINE_ID.1"
		sink	"dai-copier.SSP.$HEADSET_CODEC_NAME.playback"
	}
	{
		source	"mixin.$HEADSET_HOST_PIPELINE_ID.1"
		sink	"mixout.$HEADSET_DAI_PIPELINE_ID.1"
	}
	{
		source	"gain.$SPEAKER_DAI_PIPELINE_ID.1"
		sink	"dai-copier.SSP.$SPEAKER_CODEC_NAME.playback"
	}
	{
		source	"mixin.$SPEAKER_HOST_PIPELINE_ID.1"
		sink	"mixout.$SPEAKER_DAI_PIPELINE_ID.1"
	}
]