At Thu, 17 Jan 2013 14:40:16 +0800, Raymond Yau wrote:
> >> >> >> >> >Yes, testing the latest code with real machines is
highly
> >> >> >> >> >appreciated. Try sound-unstable git tree, either
master or
> >> >> >> >> >test/hda-migrate branch. > >> >> >> >> > git:// > >> >> >
git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-unstable.git
> >> >> >> >> > > >> >> >> >> >Alternatively you can build the external alsa-driver
modules from
> >> >> >> >> >alsa-driver-unstable snapshot tarball, too > >> >> >> >> > > >> >> >> > > >> >> >
ftp://ftp.suse.com/pub/people/tiwai/snapshot/alsa-driver-unstable-snapshot.tar.gz
> >> >> >> >> > > >> >> >> >> >Note that only the behavior of model=auto has been
changed in the tree
> >> >> >> >> >above. The other model behaviors of AD codecs are
unchanged at all.
> >> >> > > >> >> >Seen many ad1988 controls are missing ? > >> >> > > >> >> >1) rear Mic, line , front Mic playback volume and switch > >> >> >2) CD playback switch > >> >> >3) input mix in input source > >> >> >4) analog loopback mix volume and mute switch
But the number of controls is smaller than in linux stable 3.7.2. I don't know if that's a regression.
Unless you see *functional* degradation, it's no regression but regarded rather as a cleanup
Refer to commit
http://git.kernel.org/?p=linux/kernel/git/tiwai/sound-unstable.git;a=commitd...
The Stereo Mix of those VIA codecs allow ADD capture DAC signal
ad1988 and those realtek codecs can select input source from the audio mixer which can mix the input pins
- snd_hda_add_imux_item(imux, "Mix", 9, NULL);
Those static models (3stack , 3stack-dig, 6stack and 6stack-dig )still have the input source "mix"
static const struct hda_input_mux ad1988_6stack_capture_source = { .num_items = 5, .items = { { "Front Mic", 0x1 }, /* port-B */ { "Line", 0x2 }, /* port-C */ { "Mic", 0x4 }, /* port-E */ { "CD", 0x5 }, { "Mix", 0x9 }, }, };
This can be added now by passing a hint "add_stereo_mix_input=true". Maybe it's better to enable it unconditionally for AD1988, as this codec is mostly used for desktops, not for laptops. (On laptops with auto-mic switching, the driver doesn't want to have capture sources other than mics.)
When there is no DAC connected to aa-mix , it is just "Input Mix" instead of "Stereo Mix"
"Stereo" doesn't mean PCM. Or maybe we just drop "Stereo" word there.
Takashi