>-----Original Message----- >From: Takashi Iwai [mailto:tiwai@xxxxxxx] >Sent: Tuesday, February 27, 2018 10:25 PM >To: Ughreja, Rakesh A <rakesh.a.ughreja@xxxxxxxxx> >Cc: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>; alsa-devel@alsa- >project.org; broonie@xxxxxxxxxx; liam.r.girdwood@xxxxxxxxxxxxxxx; Koul, Vinod ><vinod.koul@xxxxxxxxx>; Patches Audio <patches.audio@xxxxxxxxx> >Subject: Re: [PATCH v1 9/9] ASoC: Intel: Boards: add support for HDA >codecs > >On Tue, 27 Feb 2018 17:20:05 +0100, >Ughreja, Rakesh A wrote: >> >> >> The hdac_hda is just a wrapper around the legacy codec driver >> >> and so it relies on the functionality of the legacy HDA codec driver >> >> for all the functionality including pin re-tasking. >> >> >> >> The widget names that you see above is just to complete the >> >> DAPM route. Based on your comment I am planning to rename it as >> >> following >> >> >> >> Analog In Endpoint >> >> Analog Output Endpoint >> >> Digital In Endpoint >> >> Digital Out Endpoint >> >> >> >> and will connect it to the Codec Pins. >> >> >> >> Also I think it makes sense to rename the codec Pin names accordingly >> >> >> >> Codec Analog Input Pin >> >> Codec Analog Output Pin >> >> Codec Digital Input Pin >> >> Codec Digital Output Pin >> > >> >Humm, what if you have more than one analog input? It's almost as if >> >this list should be created dynamically based on what is exposed by the >> >codec, I don't see how a static list will cover all configurations. >> >> If it is really required it can be done, the codec->pcm_list_head has got >> entries stored. >> >> But I am not sure what is the behavior of the legacy HDA codec driver >> when it sees more than one Analog inputs. >> >> Takashi, will I see two Analog entries in the pcm_list_head ? > >Yes, in a few cases, the generic parser creates another PCM for analog >I/O as "Alt Analog": But this again is static and its named as "Alt Analog". So, in the current code if I just create one more as "Alt Analog" DAI it should be fine ? I do map them by searching the pcm_list_head when the application opens them. Will I see more than one "Analog" and "Alt Analog" ever in the pcm_list_head ? or at max I am going to see one "Analog" and an additional "Alt Analog" PCM. Regards, Rakesh _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
