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sof/tools/topology/sof-apl-eq-dmic.m4

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Topology: Add DMIC capture pipeline with gain and high-pass filter This patch adds topology sof-apl-eq-dmic to help testing acoustical audio capture via DMIC or work as example for other machine drivers. The capture format is set as four channels, S32_LE, 48 kHz. The IIR EQ is a 2nd order Butterworth high-pass with cut-off frequency at 50 Hz to suppress non-audible lowest frequencies. The EQ provides additional +20 dB gain to avoid the recording to sound too silent. The IIR EQ or additional FIR EQ instance can when needed provide other form factor specific equalization. Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
2018-10-09 20:12:12 +08:00
#
# Topology for Apollo Lake with direct attach digital microphones array
#
# Include topology builder
include(`utils.m4')
include(`dai.m4')
include(`pipeline.m4')
# Include TLV library
include(`common/tlv.m4')
# Include Token library
include(`sof/tokens.m4')
# Include Apollolake DSP configuration
include(`platform/intel/bxt.m4')
include(`platform/intel/dmic.m4')
#
# Define the pipelines
#
Fix sof-apl-eq-dmic comments Fix copy paste comment errors Signed-off-by: Curtis Malainey <cujomalainey@google.com>
2018-11-16 10:10:22 +08:00
# PCM6 <---- EQ IIR <----- DMIC6 (DMIC01)
Topology: Add DMIC capture pipeline with gain and high-pass filter This patch adds topology sof-apl-eq-dmic to help testing acoustical audio capture via DMIC or work as example for other machine drivers. The capture format is set as four channels, S32_LE, 48 kHz. The IIR EQ is a 2nd order Butterworth high-pass with cut-off frequency at 50 Hz to suppress non-audible lowest frequencies. The EQ provides additional +20 dB gain to avoid the recording to sound too silent. The IIR EQ or additional FIR EQ instance can when needed provide other form factor specific equalization. Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
2018-10-09 20:12:12 +08:00
#
dnl PIPELINE_PCM_ADD(pipeline,
dnl pipe id, pcm, max channels, format,
dnl frames, deadline, priority, core)
# Passthrough capture pipeline 13 on PCM 6 using max 4 channels.
# Schedule 48 frames per 1000us deadline on core 0 with priority 0
PIPELINE_PCM_ADD(sof/pipe-eq-capture.m4,
1, 6, 4, s32le,
48, 1000, 0, 0)
#
# DAIs configuration
#
dnl DAI_ADD(pipeline,
dnl pipe id, dai type, dai_index, dai_be,
dnl buffer, periods, format,
dnl frames, deadline, priority, core)
# capture DAI is DMIC 0 using 2 periods
# Buffers use s32le format, with 48 frame per 1000us on core 0 with priority 0
DAI_ADD(sof/pipe-dai-capture.m4,
1, DMIC, 0, NoCodec-6,
PIPELINE_SINK_1, 2, s32le,
48, 1000, 0, 0)
dnl PCM_DUPLEX_ADD(name, pcm_id, playback, capture)
dnl PCM_CAPTURE_ADD(name, pipeline, capture)
PCM_CAPTURE_ADD(DMIC01, 6, PIPELINE_PCM_1)
#
# BE configurations - overrides config in ACPI if present
#
dnl DAI_CONFIG(type, dai_index, link_id, name, ssp_config/dmic_config)
DAI_CONFIG(DMIC, 0, 6, NoCodec-6,
dnl DMIC_CONFIG(driver_version, clk_min, clk_mac, duty_min, duty_max,
dnl sample_rate,
dnl fifo word length, type, dai_index, pdm controller config)
DMIC_CONFIG(1, 500000, 4800000, 40, 60, 48000,
dnl DMIC_WORD_LENGTH(frame_format)
DMIC_WORD_LENGTH(s32le), DMIC, 0,
dnl PDM_CONFIG(type, dai_index, num pdm active, pdm tuples list)
dnl STEREO_PDM0 is a pre-defined pdm config for stereo capture
PDM_CONFIG(DMIC, 0, FOUR_CH_PDM0_PDM1)))