[CML][HDA] arecord cannot record any signal from onboard DMIC

[stevyan]

Summary
arecord cannot record any signal from onboard DMIC

To Reproduce

1. arecord -Dhw:0,6 -f s32_le -r 48000 -c 2 /dev/null -vv -i
2. arecord -Dhw:0,7 -f s16_le -r 48000 -c 2 /dev/null -vv -i

Actual Result

Recording WAVE '/dev/null' : Signed 32 bit Little Endian, Rate 48000 Hz, Stereo
Hardware PCM card 0 'sof-skl_hda_card' device 6 subdevice 0
Its setup is:
 stream : CAPTURE
 access : RW_INTERLEAVED
 format : S32_LE
 subformat : STD
 channels : 2
 rate : 48000
 exact rate : 48000 (48000/1)
 msbits : 32
 buffer_size : 8184
 period_size : 2040
 period_time : 42500
 tstamp_mode : NONE
 tstamp_type : MONOTONIC
 period_step : 1
 avail_min : 2040
 period_event : 0
 start_threshold : 1
 stop_threshold : 8184
 silence_threshold: 0
 silence_size : 0
 boundary : 9214364837600034816
 appl_ptr : 0
 hw_ptr : 0
#+ | 00%

Recording WAVE '/dev/null' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
Hardware PCM card 0 'sof-skl_hda_card' device 7 subdevice 0
Its setup is:
 stream : CAPTURE
 access : RW_INTERLEAVED
 format : S16_LE
 subformat : STD
 channels : 2
 rate : 48000
 exact rate : 48000 (48000/1)
 msbits : 16
 buffer_size : 16368
 period_size : 4080
 period_time : 85000
 tstamp_mode : NONE
 tstamp_type : MONOTONIC
 period_step : 1
 avail_min : 4080
 period_event : 0
 start_threshold : 1
 stop_threshold : 16368
 silence_threshold: 0
 silence_size : 0
 boundary : 9214364837600034816
 appl_ptr : 0
 hw_ptr : 0
#+ | 00%

Expected Result

1. ############+ | 48%
2. #################+ | 75%

Environment
HW Platform: CML laptop with ALC3204 and onboard DMIC
Kernel: rander/cml-validation-branch (topic/sof-dev 58d1b6b + issue 767 regression fix + DMIC patch)
Firmware: master ed6ac05 (revert the commit f5e7843)
Topology: rander/cml-validation-branch (master 742f83b + DMIC topology support patch )

sof-logger log

 0 2 PIPE 1.5 124895.104167 6.770833 src/audio/pipeline.c:188 	pipeline_complete()
 0 2 IPC 125004.739583 109.635414 src/ipc/handler.c:865 	ipc: hdr 0x50010000 tx (108) > rx (92)
 0 2 IPC 125007.604167 2.864583 src/ipc/handler.c:867 	ipc: comp 45 -> cmd 0
 0 2 VOLUME 125022.604167 15.000000 src/audio/volume.c:434 	volume_cmd()
 0 2 VOLUME 125025.520833 2.916667 src/audio/volume.c:327 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, cdata->comp_id = 45
 0 2 VOLUME 125028.333333 2.812500 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 0, value = 52056
 0 2 VOLUME 125031.093750 2.760417 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 1, value = 52056
 0 2 IPC 125168.645833 137.552078 src/ipc/handler.c:865 	ipc: hdr 0x50010000 tx (108) > rx (92)
 0 2 IPC 125171.875000 3.229167 src/ipc/handler.c:867 	ipc: comp 38 -> cmd 0
 0 2 VOLUME 125185.156250 13.281250 src/audio/volume.c:434 	volume_cmd()
 0 2 VOLUME 125188.333333 3.177083 src/audio/volume.c:327 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, cdata->comp_id = 38
 0 2 VOLUME 125191.250000 2.916667 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 0, value = 65536
 0 2 VOLUME 125194.270833 3.020833 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 1, value = 65536
 0 2 IPC 125402.604167 208.333328 src/ipc/handler.c:865 	ipc: hdr 0x50010000 tx (108) > rx (92)
 0 2 IPC 125405.625000 3.020833 src/ipc/handler.c:867 	ipc: comp 31 -> cmd 0
 0 2 VOLUME 125416.666667 11.041667 src/audio/volume.c:434 	volume_cmd()
 0 2 VOLUME 125419.843750 3.177083 src/audio/volume.c:327 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, cdata->comp_id = 31
 0 2 VOLUME 125422.760417 2.916667 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 0, value = 65536
 0 2 VOLUME 125425.781250 3.020833 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 1, value = 65536
 0 2 IPC 125637.135417 211.354172 src/ipc/handler.c:865 	ipc: hdr 0x50010000 tx (108) > rx (92)
 0 2 IPC 125640.156250 3.020833 src/ipc/handler.c:867 	ipc: comp 22 -> cmd 0
 0 2 VOLUME 125649.531250 9.375000 src/audio/volume.c:434 	volume_cmd()
 0 2 VOLUME 125652.552083 3.020833 src/audio/volume.c:327 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, cdata->comp_id = 22
 0 2 VOLUME 125655.468750 2.916667 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 0, value = 65536
 0 2 VOLUME 125658.489583 3.020833 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 1, value = 65536
 0 2 IPC 125978.385417 319.895844 src/ipc/handler.c:865 	ipc: hdr 0x50010000 tx (108) > rx (92)
 0 2 IPC 125981.406250 3.020833 src/ipc/handler.c:867 	ipc: comp 15 -> cmd 0
 0 2 VOLUME 125988.906250 7.500000 src/audio/volume.c:434 	volume_cmd()
 0 2 VOLUME 125991.927083 3.020833 src/audio/volume.c:327 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, cdata->comp_id = 15
 0 2 VOLUME 125994.843750 2.916667 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 0, value = 52056
 0 2 VOLUME 125998.020833 3.177083 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 1, value = 52056
 0 2 IPC 126212.916667 214.895828 src/ipc/handler.c:865 	ipc: hdr 0x50010000 tx (108) > rx (92)
 0 2 IPC 126215.989583 3.072917 src/ipc/handler.c:867 	ipc: comp 8 -> cmd 0
 0 2 VOLUME 126221.666667 5.677083 src/audio/volume.c:434 	volume_cmd()
 0 2 VOLUME 126224.687500 3.020833 src/audio/volume.c:327 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, cdata->comp_id = 8
 0 2 VOLUME 126227.604167 2.916667 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 0, value = 65536
 0 2 VOLUME 126230.781250 3.177083 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 1, value = 65536
 0 2 IPC 126425.052083 194.270828 src/ipc/handler.c:865 	ipc: hdr 0x50010000 tx (108) > rx (92)
 0 2 IPC 126428.229167 3.177083 src/ipc/handler.c:867 	ipc: comp 1 -> cmd 0
 0 2 VOLUME 126431.927083 3.697917 src/audio/volume.c:434 	volume_cmd()
 0 2 VOLUME 126434.947917 3.020833 src/audio/volume.c:327 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, cdata->comp_id = 1
 0 2 VOLUME 126437.864583 2.916667 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 0, value = 65536
 0 2 VOLUME 126441.041667 3.177083 src/audio/volume.c:332 	volume_ctrl_set_cmd(), SOF_CTRL_CMD_VOLUME, channel = 1, value = 65536
 0 2 IPC 126642.968750 201.927078 src/ipc/handler.c:643 	ipc: pm -> restore
 0 2 IPC 127571.093750 928.125000 src/ipc/handler.c:239 	ipc: comp 55 -> params
 0 2 PIPE 101.58 127589.322917 18.229166 src/audio/pipeline.c:320 	pipeline_params()
 0 2 HOST 127593.177083 3.854167 src/audio/host.c:514 	host_params()
 0 2 DMA 127599.218750 6.041667 intel/cavs/hda-dma.c:464 	hda-dmac: 4 channel 1 -> get
 0 2 DMA 127603.229167 4.010417 intel/cavs/hda-dma.c:685 	hda-dmac: 4 channel 1 -> config

dmesg-record_muted.log
sof-logger-record_muted.log

[singalsu]

@RanderWang If the capture produces no data I think the DMIC addr, DMA and IRQ settings should be checked for this platform. Do you have the documentation (I don't have myself)?

@stevyan Just a minute, I misinterpreted the "######" thing. Is it the arecord VU meter output? If it means that arecord captures a recording normally but the PCM samples are zeros it's an issue with the microphones (powered? receiving clock? sending data?)

[mengdonglin]

@singalsu Can this information "DMIC addr, DMA and IRQ settings" usually get by dumping ACPI info from BIOS or some audio design document?

[singalsu]

@mengdonglin The platform audio cluster programming guide usually contains these, I don't have the document for CML. I probably made the mistake by assuming that nothing is captured. I thought the #### characters in the reported error would be some progress bar (time) but I learned from arecord manual it's a level meter meter instead (-vv option).

If the capture data flows but remains zero the latter mic connection or powering might be the issue. Physical access to PDM bus and mic power would be needed to confirm.

[stevyan]

It doesn't reproduce, only recorded with very level volume.
For DMIC2(hw:0,7), the record rate cannot set 16K correctly, risk new issue will track it.