Revise the subject.
Could someone clarify if the rtd_aux in struct snd_soc_card is still needed?
We want to replace the aux_dev by aux_component.
If the rtd_aux is no longer needed, we can remove the array and it will
become easier to handle an aux_dev as a generic component.
Thanks
Mengdong
On 12/16/2015 04:33 PM, Mengdong Lin wrote:
On 12/15/2015 07:23 PM, Mark Brown wrote:
On Tue, Dec 15, 2015 at 04:06:14PM +0800, Mengdong Lin wrote:
I still have some basic questions:
1. What are the typical usages for aux_dev?
For CODEC<->CODEC link or external headset detection chip?
Neither, it's for analogue devices.
Got it. Thanks!
2. Why we need the rtd array 'rtd_aux' for the aux_devs?
If the codec has DAIs and used by a DAI link, the ASoC will
create a rtd
for the link.
There are (or were at the time) assumptions in drivers that there will
be a rtd there so it was easier to provide a stub.
Can we remove this rtd array if current driver does not need the stub?
For the replacement of aux_dev by aux_component, can we define like below?
struct snd_soc_aux_component {
const char *comp_name; ... no longer assume they're only codecs
const char *comp_of_node;
/* machine specific init */
int (*init)(struct snd_soc_component *componnent);
};
The ASoC can use the comp_name or comp_of_node to find the components
and probe them.
Thanks
Mengdong
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