On Mon, 02 Nov 2015 08:30:19 +0100, Yang, Libin wrote:
-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Friday, October 30, 2015 7:27 PM To: Yang, Libin Cc: Lin, Mengdong; David Henningsson; Raymond Yau; airlied@linux.ie; tanuk@iki.fi; ALSA Development Mailing List; Girdwood, Liam R; Lu, Han Subject: Re: [alsa-devel] DP1.2 MST audio support discussion
On Tue, 27 Oct 2015 09:45:17 +0100, Yang, Libin wrote:
Hi Takashi and David,
There are still some opens. Would you please help to comment?
- SPDIF kctl.
This SPDIF number will be the same as PCM and be bound to the PCM. The pin nid of SPDIF will not be initialized. And the pin nid will be
assigned
After PCM is bound to the pin. (How to assign?)
I don't understand the question. Could you elaborate?
In alsamixer for HDMI, we can see S/PDIF ctl to control mute/unmute. Also in driver, we can see it creates the ctls with snd_hda_create_dig_out_ctls() in build_controls() based on pin number. I wonder whether user space use these ctls based on pin or pcm? Suppose it should be also based on PCM, right?
Right, these are for PCMs
Takashi