WM8753 Speaker Playback ZC Switch
Al Johnson
openmoko at mazikeen.demon.co.uk
Fri Nov 12 18:52:21 CET 2010
On Friday 12 November 2010, Ed Kapitein wrote:
> Hi All,
>
> I am happily hacking on my FR and was toying with the wolfson.
> I happen to notice that in order to get any sound from the earpiece i
> had to switch on the Speaker Playback ZC Switch.
> That switch is mentioned in the statefile, but i can't find it in any of
> the diagrams on [1] [2]
The one in the wiki is just an annotation of the Wolfson diagram, adding alsa
control numbers to the visible elements where I could identify them. I think
there were some elements I couldn't identify a control number for, and there
are a lot of controls that have no representative element in the diagram,
usually because they involve digital processing rather than an identifiable
analogue element. If you find a mistake or something to add then please make
the correction.
> Is there someone with an updated version of the diagrams, that includes
> the two switches below?
>
> control.9 {
> comment.access 'read write'
> comment.type BOOLEAN
> comment.count 2
> iface MIXER
> name 'Headphone Playback ZC Switch'
> value.0 false
> value.1 false
> }
> control.10 {
> comment.access 'read write'
> comment.type BOOLEAN
> comment.count 2
> iface MIXER
> name 'Speaker Playback ZC Switch'
> value.0 true
> value.1 true
> }
>
> Kind regards,
> Ed
>
> [1] http://wiki.openmoko.org/wiki/Neo1973_Audio_Subsystem
>
> [2] http://www.wolfsonmicro.com/products/audio_hubs/WM8753/
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