[alsa-devel] [RFC PATCH] HDA: Generic input jack handling

[David Henningsson]

On 10/13/2011 08:40 AM, Takashi Iwai wrote:
>> Thanks for the explanation and for your thoughts about what you think
>> could lie ahead. What would you think about the following instead:
>>
>> struct detectable_jack {
>> 	hda_nid_t nid;
>> 	int jack_type; /* SND_JACK_xxx */
>> };
>>
>> #define MAX_DETECTABLE_JACKS 16
>>
>> struct auto_pin_cfg {
>> 	/* ... */
>> 	struct detectable_jack detectable_jacks[MAX_DETECTABLE_JACKS];
>> };
>>
>> We will let snd_hda_parse_pin_def_config fill this in as well, and the
>> unsol_tag will be index to this array. Tags over MAX_DETECTABLE_JACKS
>> can be used by codec specific stuff, e g sigmatel's power events.
>
> Hmm... This sounds trickier.  Can't it be simply a list of nid,
> event_type and jack_type?  Or just add jack_type to the event struct
> in patch_sigmatel.c.
>
> When we track all unsol events in the table, the hardware
> initialization can be simplified.  Create a function to call
> SET_UNSOL_ENABLE verb for the all entries, and call it from the
> codec_patch init callback.

Just for the record - I think we can to talk about this next week to see 
if we can merge our thoughts and come to a conclusion we're both happy with.

-- 
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic