[alsa-devel] [PATCH v2 01/13] conf/ucm: bytcr-rt5645: Use the generic bytcr/PlatformEnableSeq.conf

[youling 257]

why not i use this command, speaker also work on x205ta.
alsaucm -c chtrt5645-mono-speaker-analog-mic set _verb HiFi set _enadev Speaker
Hans de Goede <hdegoede at redhat.com> 于2018年11月26日周一 下午9:40写道：
>
> Hi,
>
> On 26-11-18 11:07, Takashi Iwai wrote:
> > The error messages (at least some of them) are known issues and I
> > already posted the problem on alsa-devel ML.  The fix should be easy
> > but I'd like to get consensus beforehand.
>
> Ah I missed that mail as I'm not subscribed to alsa-devel. Since
> my changes are the cause of this alsaucm command problem, let me
> reply here:
>
>  > some of the recently added UCM profiles are the files to be included
>  > by others, and they are not card targets.  Unfortunately alsaucm
>  > doesn't know about it, and it aborts with error, e.g.
>  >
>  > ====
>  > % alsaucm
>  > ALSA lib utils.c:67:(uc_mgr_config_load) could not open configuration file /usr/share/alsa/ucm/bytcr/bytcr.conf
>  > ALSA lib parser.c:1427:(load_master_config) error: could not parse configuration for card bytcr
>  > alsaucm: unable to obtain card list: No such file or directory
>  > ====
>  >
>  > The similar error is found in nau8824, rt5640 and rt5651.  After
>  > putting a placeholder card config file (e.g. bytcr.conf), the error is
>  > gone.  But certainly we don't want to allow user to choose this as the
>  > proper card.
>  >
>  > So, I guess we need to put some flag to each such directory indicating
>  > that it's no card config.  For example, putting
>  > /usr/share/alsa/ucm/bytcr/.nocard file or such...
>  >
>  > Not sure whether it's wise to have a file starting with dot, though.
>  > Maybe clearer to be "nocard" or any other visible one?
>
> All the HiFi.conf files using the "include" snippets I added to avoid
> copy and pasting a lot, already need to have this at the top for
> this to work:
>
> <searchdir:ucm>
>
> So it might be best to move all the dirs holding include files rather
> then proper card configs from /usr/share/alsa/ucm to
> /usr/share/alsa/ucm-includes and then change the searchdir part of
> the configs using these to:
>
> <searchdir:ucm-includes>
>
> Regards,
>
> Hans