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

[Raymond Yau]

> >
> > > 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 ?

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]