On 02/15/2016 10:22 PM, Lars-Peter Clausen wrote:
On 02/15/2016 01:19 PM, Vaibhav Agarwal wrote:
Following patches are based on for-next branch from broonie tree.
First 2 patches include changes in existing soc, core framework
to prepare for adding support for dynamic DAI link addition/
removal
Patch 3 & 4 contains actual changes to enable dynamic DAI link
support
NOTE:
Currently, the code is tested on Pandaboad ES revB3 for playback
usecase.
Can you outline how exactly that would work?
Thanks,
- Lars
In Agarwal's use case, it seems a removable codec driver can be
registered after the sound card is registered. And the Pandaboard
machine driver need to add new BE links brought by the new codec
component, which will further trigger probing of the codec components.
How can the machine driver know a new codec component is registered
automatically?
Can we add a notification ops like "new_component" to a soc card?
A machine driver can implement this ops. So when a new component is
registered to the ASoC core, all instantiated soc cards can get notified
and the machine driver can check if the new component brings some new
links to the soc card in this ops. e.g. the Pandaboard machine driver
can add new BE links for the new codec.
Thanks
Mengdong
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