linux-kernel - Re: Commit a551d91473 (ALSA: hda - Use regmap for command verb caches, too) breaks TOSLINK

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Date:	Thu, 16 Apr 2015 09:56:54 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Markus Trippelsdorf <markus@...ppelsdorf.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Commit a551d91473 (ALSA: hda - Use regmap for command verb caches, too) breaks TOSLINK

At Thu, 16 Apr 2015 09:15:04 +0200,
Markus Trippelsdorf wrote:
> 
> Hi,
> 
> since commit a551d914:
> Author: Takashi Iwai <tiwai@...e.de>
> Date:   Thu Feb 26 12:34:49 2015 +0100
> 
>     ALSA: hda - Use regmap for command verb caches, too
> 
> my DAC receives no signal over TOSLINK-S/PDIF anymore.
> 
> Reverting the commit on top of the current Linus tree "fixes" the issue.
> 
>  % aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: SB [HDA ATI SB], device 0: VT1708S Analog [VT1708S Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 0: SB [HDA ATI SB], device 3: VT1708S Digital [VT1708S Digital]
>   Subdevices: 0/1
>   Subdevice #0: subdevice #0
> card 1: HDMI [HDA ATI HDMI], device 3: ID 791a Digital [ID 791a Digital]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> 
> [VT1708S Digital] is the device I use.
> 
>  # cat /etc/asound.conf
> pcm.!default {
>   type hw
>   card 0
>   device 3
> }
> 
> ctl.!default {
>   type hw
>   card 0
>   device 3
> }
> 
> pcm.crossfeed {
>   type plug
>   slave.pcm "ladspa"
> }
> 
> pcm.guitar {
>   type plug
>   slave.pcm "ladspa2"
> }
> 
> pcm.ladspa {
>   type ladspa
>   slave.pcm "plughw:0,3";
>   path "/usr/lib/ladspa";
>   plugins [
>     {
>       label bs2b
>       input {
>         controls [ 700 4 ]
>       }
>     }
>  ]
> }
> 
> pcm.ladspa2{
>   type ladspa
>   slave.pcm "plughw:2,0";
>   path "/usr/lib/ladspa";
>   plugins [
>     {
>       label bs2b
>       input {
>         controls [ 700 4 ]
>       }
>     }
>  ]
> }

Could you give alsa-info.sh outputs from both working and non-working
cases?  Run the script with --no-upload option and give attachments
(better compressed).  Take snapshots while you're testing the
playback.


thanks,

Takashi
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