Dne 16. 12. 19 v 13:51 Hui Wang napsal(a):
On the machines with HDA codec, the sof driver will use the legacy hda
codec driver, as a result, most mixer controls are same as before.
There are only 2 difference:
- HDMI pcm index is 3, 4 and 5 instead of 3, 7, 8...
- dmic is on device 6, 7 instead of 0
After applying this patch, we will get (aplay -L):
hdmi:CARD=sofsklhdacard,DEV=0
sof-skl_hda_card,
HDMI Audio Output
hdmi:CARD=sofsklhdacard,DEV=1
sof-skl_hda_card,
HDMI Audio Output
hdmi:CARD=sofsklhdacard,DEV=2
sof-skl_hda_card,
HDMI Audio Output
and (arecord -L):
dmic:CARD=sofsklhdacard,DEV=0
sof-skl_hda_card,
Digital Mic connected to the PCH directly
dmic:CARD=sofsklhdacard,DEV=1
sof-skl_hda_card,
Digital Mic connected to the PCH directly
Then we could add minor changes in the pulseaudio configuration, after
that, all output and input devices will work under pulseaudio.
This is a supplement for ucm, the ucm for sof driver has higher
priority than this conf, if there is no ucm for sof driver, this conf
will take effect.
Exactly. The dmic definitions should not be a standard in my eyes. I would not
like to accept this. I can accept the standard definitions for the playback
devices for this driver, but UCM will replace everything. It's better to
define the special PA config for now until we resolve all the UCM issues like:
http://people.redhat.com/~jkysela/sof/carbon-x1-pulse.tar.gz2
The 2nd PA UCM patchset which is working with the current UCM in ALSA's repos
for this hardware:
https://gitlab.freedesktop.org/pulseaudio/pulseaudio/merge_requests/217
But it is just a start. There are plenty unresolved abstraction issues with this.
Jaroslav
--
Jaroslav Kysela <perex@xxxxxxxx>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
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