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[BUG][DSM] Channel 3,4 are empty when testing with S16_LE format #2679
Description
Describe the bug
Tested the DSM on TGL, S24_4LE and S32_LE are working well. but when testing with S16_LE format, channel 3 and 4 are empty in the recorded wav. From waveform, it looks like the data of channel 3 and 4 are mixed in channel 1 and 2.
To Reproduce
aplay -Dhw:0,0 -f S16_LE -r 48000 -c2 sine_s16_le_48k.wav --dump-hw-params & arecord -Dhw:0,0 -f S16_LE -r 48000 -c 4 -d 10 DSM.wav -vv
Reproduction Rate
5/5
Expected behavior
channel 3,4 should also have data
Impact
no data in Channel 3 and 4, and channel 1 and 2 data are also wrong.
Environment
- Kernel: thesofproject/linux topic/smart-amp
- Sof: thesofproject/sof tgl-004-drop-stabe
- Tplg: sof-tgl-smart-amplifier.m4 (rename it to sof-tgl-nocodec.tplg
- Platform:TGL
Activity
slawblauciak commentedon Apr 1, 2020
Low priority for now, this format is not supported currently.
paulstelian97 commentedon Apr 1, 2020
Probably the DMA engine is still configured for 4 bytes per elementary transfer instead of 2? Who's the owner of the DMA engine on this platform?
lgirdwood commentedon Apr 1, 2020
Isn't demux/mux used here ? see #2687
keqiaozhang commentedon Apr 27, 2020
This issue is fixed in tgl-005-drop-stable branch. We tested it on Volteer-I2S and this issue is not reproducible.
Test recipe:
Driver: fce7f93 + thesofproject/linux#1971 + https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git/commit/?h=for-next&id=914f674bec6efe42f9d6b036850a618fd1698290
Firmware:
SOF branch: tgl-005-drop-stable Commit: 277a971
TPLG: sof-tgl-max98373-rt5682.tplg