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