104 lines
2.7 KiB
Plaintext
104 lines
2.7 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(`local.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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# Volume Mixer Switch control with max value of 1
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C_CONTROLMIXER(Master Playback Volume Switch, 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(max value 1 indicates switch type control, 1),
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false,
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,
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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 uses pipeline DMAC and channel
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# with 2 sink and 0 source periods
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W_PCM_PLAYBACK(Passthrough Playback, PIPELINE_DMAC, PIPELINE_DMAC_CHAN, 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 Switch", "Master Playback Volume"))
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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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# DAI definitions
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#
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W_DAI_OUT(DAI_TYPE, DAI_INDEX, DAI_FORMAT, 0, DAI_PERIODS,
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DAI_PERIODS, dai0p_plat_conf)
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#
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# DAI pipeline - always use 0 for DAIs
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#
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W_PIPELINE(N_DAI_OUT, SCHEDULE_DEADLINE, SCHEDULE_PRIORITY, SCHEDULE_FRAMES,
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SCHEDULE_CORE, 0, pipe_dai_schedule_plat)
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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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SectionGraph."pipe-pass-vol-playback-PIPELINE_ID" {
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index STR(PIPELINE_ID)
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lines [
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dapm(N_PCMP, Passthrough Playback PCM_ID)
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dapm(N_BUFFER(0), N_PCMP)
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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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}
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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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SectionPCMCapabilities.STR(Passthrough Playback PCM_ID) {
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formats "S32_LE,S24_LE,S16_LE"
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rate_min "48000"
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rate_max "48000"
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channels_min "2"
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channels_max "4"
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periods_min "2"
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periods_max "16"
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period_size_min "192"
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period_size_max "16384"
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buffer_size_min "65536"
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buffer_size_max "65536"
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}
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