[alsa-devel] Intel Baytrail Linux Audio

[Nicolas George]

Le quintidi 15 messidor, an CCXXIII, Antonio Ospite a écrit :
> snd-soc-sst-bytcr-rt5640 will be loaded automatically if you use
> snd-intel-sst-acpi instead of snd-soc-sst-acpi, you can blacklist
> the latter using a file in /etc/modprobe.d (look up the details), or
> just remove snd-soc-sst-acpi.ko from the installation dir as a dirty
> hack.

Indeed. I always loaded snd-soc-sst-acpi before snd-intel-sst-acpi, so I
could not observe it gives a different result.

> In my tests I used the code from mainline linux.

Ok. That is what I am doing too.

> Note that different drivers expect different firmwares, you cannot mix
> them:
> 
>  snd-soc-sst-acpi   -> fw_sst_0f28.bin-48kHz_i2s_master
>  snd-intel-sst-acpi -> fw_sst_0f28.bin
>  snd-intel-sst-acpi -> fw_sst_0f28_ssp0.bin (renamed to fw_sst_0f28.bin)

Ok. I re-ran the tests like that.

After loading snd-intel-sst-acpi, the kernel says:

[   35.160330] intel_sst_acpi 80860F28:00: LPE base: 0x90a00000 size:0x200000
[   35.160339] intel_sst_acpi 80860F28:00: IRAM base: 0x90ac0000
[   35.160372] intel_sst_acpi 80860F28:00: DRAM base: 0x90b00000
[   35.160384] intel_sst_acpi 80860F28:00: SHIM base: 0x90b40000
[   35.160395] intel_sst_acpi 80860F28:00: Mailbox base: 0x90b44000
[   35.160405] intel_sst_acpi 80860F28:00: DDR base: 0x20000000
[   35.161373] intel_sst_acpi 80860F28:00: Got drv data max stream 25

After loading snd-soc-sst-bytcr-rt5640 it says:

[   69.130424] bytt100_rt5640 bytt100_rt5640: snd-soc-dummy-dai <-> media-cpu-dai mapping ok
[   69.130482] compress asoc: snd-soc-dummy-dai <-> compress-cpu-dai mapping ok
[   69.130536] bytt100_rt5640 bytt100_rt5640: rt5640-aif1 <-> ssp2-port mapping ok
[   69.130650] bytt100_rt5640 bytt100_rt5640: Connecting non-supply widget to supply widget is not supported (Int Mic -> LDO2)
[   69.130657] bytt100_rt5640 bytt100_rt5640: ASoC: no dapm match for Int Mic --> (null) --> LDO2
[   69.130663] bytt100_rt5640 bytt100_rt5640: ASoC: Failed to add route Int Mic -> direct -> LDO2
[   69.165392] sst-mfld-platform sst-mfld-platform: Slot control: codec_out tx interleaver slot 0 doesn't have DAPM widget!!!
[   69.165427] sst-mfld-platform sst-mfld-platform: Slot control: codec_out tx interleaver slot 1 doesn't have DAPM widget!!!
[   69.165460] sst-mfld-platform sst-mfld-platform: Slot control: codec_out tx interleaver slot 2 doesn't have DAPM widget!!!
[   69.165494] sst-mfld-platform sst-mfld-platform: Slot control: codec_out tx interleaver slot 3 doesn't have DAPM widget!!!
[   69.165521] sst-mfld-platform sst-mfld-platform: Slot control: codec_in rx deinterleaver codec_in0_0 doesn't have DAPM widget!!!
[   69.165551] sst-mfld-platform sst-mfld-platform: Slot control: codec_in rx deinterleaver codec_in0_1 doesn't have DAPM widget!!!
[   69.165583] sst-mfld-platform sst-mfld-platform: Slot control: codec_in rx deinterleaver codec_in1_0 doesn't have DAPM widget!!!
[   69.165618] sst-mfld-platform sst-mfld-platform: Slot control: codec_in rx deinterleaver codec_in1_1 doesn't have DAPM widget!!!

The sound card appears, but then if I try to play something:

aplay -D hw:0 -c 2 -r 48000 -f S16_LE /dev/urandom
aplay: set_params:1297: Unable to install hw params:
ACCESS:  RW_INTERLEAVED
FORMAT:  S16_LE
SUBFORMAT:  STD
SAMPLE_BITS: 16
FRAME_BITS: 32
CHANNELS: 2
RATE: 48000
PERIOD_TIME: 125000
PERIOD_SIZE: 6000
PERIOD_BYTES: 24000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 24000
BUFFER_BYTES: 96000
TICK_TIME: 0

[   95.164749]  Baytrail Audio Port: ASoC: no backend DAIs enabled for Baytrail Audio Port

The messages are exactly the same with both firmwares (fw_sst_0f28.bin and
fw_sst_0f28_ssp0.bin).

Maybe I forgot to load another module?

Side note: snd-intel-sst-acpi and snd-soc-rt5640 both have usage count 1
without dependent modules, that requires a reboot between each test.

Thanks for your help, it helped me make progress even if it still is not
success.

Regards,

-- 
  Nicolas George
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