[alsa-devel] [PATCH 2/2] ALSA: hda - Remove NO_PRESENCE bit override for Dell 1420n Laptop

[Takashi Iwai]

At Wed, 24 Jul 2013 20:17:16 +0800,
Raymond Yau wrote:
> 
> > >
> > > > The quirk for Dell laptops with STAC9228 overrides the pin default
> > > > config of NID 0x0f to the value with AC_DEFCFG_MISC_NO_PRESENCE bit
> > > > on.  I'm not quite sure why this was done so, but can guess that this
> > > > was introduced for avoiding this to be muted by another headphone
> > > > plug.  Now, after transition to the generic parser, this workaround
> > > > rather causes a problem (notably as unexpected speaker mutes) because
> > > > the pin is seen as if it's always plugged in.
> > > >
> > >
> > >
> > > Is there any side effect when the driver perform pin fixup on line out
> pin
> > > complex which pincap does not support HP to headphone phone complex
> > >
> > > Refer to STAC9228 datasheet , port F does not support headphone out
> >
> > Yes, but we checked that Windows show in the same way (the secondary
> > headphone), so we just take it as is.
> 
> Is this a regression since it surround 5.1 was supported ?

Sort of.


Takashi

> http://git.kernel.org/cgit/linux/kernel/git/tiwai/hda-emu.git/plain/codecs/stac9228-dell-inspiron-1420-laptop
> 
> Simple mixer control 'Headphone as Line Out',0
>   Capabilities: pswitch pswitch-joined
>   Playback channels: Mono
>   Mono: Playback [on]
> 
> Simple mixer control 'Mic as Output',0
>   Capabilities: pswitch pswitch-joined
>   Playback channels: Mono
>   Mono: Playback [on]
> 
> Simple mixer control 'Swap Center/LFE',0
>   Capabilities: pswitch pswitch-joined
>   Playback channels: Mono
>   Mono: Playback [off]