72 lines
1.9 KiB
Plaintext
72 lines
1.9 KiB
Plaintext
# Low Latency Passthrough with volume Pipeline and PCM
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#
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# Pipeline Endpoints for connection are :-
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#
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# host PCM_P --> B0 --> Volume 0 --> B1 --> sink DAI0
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# Include topology builder
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include(`utils.m4')
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include(`buffer.m4')
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include(`pcm.m4')
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include(`pga.m4')
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include(`dai.m4')
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include(`mixercontrol.m4')
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include(`pipeline.m4')
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#
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# Controls
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#
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# Volume Mixer control with max value of 32
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C_CONTROLMIXER(Master Playback Volume, PIPELINE_ID,
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CONTROLMIXER_OPS(volsw, 256 binds the mixer control to volume get/put handlers, 256, 256),
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CONTROLMIXER_MAX(, 32),
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false,
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CONTROLMIXER_TLV(TLV 32 steps from -90dB to +6dB for 3dB, vtlv_m90s3),
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Channel register and shift for Front Left/Right,
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LIST(` ', KCONTROL_CHANNEL(FL, 1, 0), KCONTROL_CHANNEL(FR, 1, 1)))
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#
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# Components and Buffers
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#
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# Host "Passthrough Playback" PCM
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# with 2 sink and 0 source periods
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W_PCM_PLAYBACK(PCM_ID, Passthrough Playback, 2, 0, 2)
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# "Volume" has 2 source and 2 sink periods
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W_PGA(0, PIPELINE_FORMAT, 2, 2, 2, LIST(` ', "Master Playback Volume PIPELINE_ID"))
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# Playback Buffers
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W_BUFFER(0, COMP_BUFFER_SIZE(2,
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COMP_SAMPLE_SIZE(PIPELINE_FORMAT), PIPELINE_CHANNELS, SCHEDULE_FRAMES),
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PLATFORM_HOST_MEM_CAP)
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W_BUFFER(1, COMP_BUFFER_SIZE(2,
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COMP_SAMPLE_SIZE(DAI_FORMAT), PIPELINE_CHANNELS, SCHEDULE_FRAMES),
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PLATFORM_DAI_MEM_CAP)
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#
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# Pipeline Graph
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#
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# host PCM_P --> B0 --> Volume 0 --> B1 --> sink DAI0
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P_GRAPH(pipe-pass-vol-playback-PIPELINE_ID, PIPELINE_ID,
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LIST(` ',
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`dapm(N_PCMP(PCM_ID), Passthrough Playback PCM_ID)',
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`dapm(N_BUFFER(0), N_PCMP(PCM_ID))',
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`dapm(N_PGA(0), N_BUFFER(0))',
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`dapm(N_BUFFER(1), N_PGA(0))'))
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#
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# Pipeline Source and Sinks
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#
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indir(`define', concat(`PIPELINE_SOURCE_', PIPELINE_ID), N_BUFFER(1))
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indir(`define', concat(`PIPELINE_PCM_', PIPELINE_ID), Passthrough Playback PCM_ID)
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#
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# PCM Configuration
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#
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PCM_CAPABILITIES(Passthrough Playback PCM_ID, `S32_LE,S24_LE,S16_LE', 48000, 48000, 2, PIPELINE_CHANNELS, 2, 16, 192, 16384, 65536, 65536)
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