Re: [PATCH 0/3] ASoC: grace time for DPCM cleanup

[Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>]

Hi Jerome

Thank you for your reply

> However, I'm a bit confused. If it is handled automatically by the CPUs
> and Codecs settings, does it mean dpcm_playback/capture flags are
> no-ops from now on ?

Yes.
dpcm_playback/capture flag itself will be exist for a while, but it will be
removed soon (v6.11 ? v6.12 ? not yet fixed).

Some driver might is using dpcm_xxx flag as limitation of direction. For
example HW can use both playback/capture, but driver want to use playback
only, in this case, driver might have dpcm_playback flag only.

In this case, driver authoer need to update to use playback_only flag
instead. [1/3] patch will indicate warning about it, for a while.


> Should I update my card drivers to ditch those flags completely ?

If the driver is using dpcm_xxx flag as limitation of direction,
driver author need to update to use xxx_only flag.
If the driver have no such flag miss, I will remove all dpcm_xxx flags
when end of its support.
Of course we can avoid extra problem if each driver author remove/update
it by themself, instead of me ;P

> May I still disable a direction on a link from the card driver, like in
> the case I described above, when a TDM link has no slots for a direction ?

For example, in case of CPU can handle both playback/capture, and Codec
handles playback only, it will be playback only automatically, no Card
settings is needed.

If both CPU/Codec can handle playback/capture, but you want to enable
playback only, you can use playback_only flag.

Is it help you ?



Thank you for your help !!

Best regards
---
Renesas Electronics
Ph.D. Kuninori Morimoto