At Fri, 31 Oct 2008 21:55:43 +1300, Eliot Blennerhassett wrote:
Greetings,
I have acer 4315 laptop with realtek alc268 codec. (It also has hda modem which I don't use.)
Looking at the datasheet, the codec has 2 PCM outs, but alsa hda driver with model=acer shows only one.
I want to know if I can enable the 2nd output, and use the external mic jack as a second line out?
I can see that PCM2/LOUT2 connects to HP-OUT (widget 0x15), while PCM1/LOUT1 connects to several pins 0x[14,15,16,18,1A]
How do I go about testing this. Does the hda model=test enable *every* widget and PCM and allow change of pin direction etc?
BTW I want to use the 2nd output as the secondar "preview" (prelisten?) headphone output for my audio player (pytone), while main output is going to speakers.
The multi streams (not multi channels) aren't supported yet for Realtek codec support codes. So it won't work as is. It's on my TODO list.
A basic framework was already prepared. spec->stream_analog_alt_playback can store the stream setup. But it's not used yet in the codec setup code.
Takashi