[alsa-devel] Trying to enable digital audio output - Intel HDA - AD1983

[Scott D'Vileskis]

Hi--
I have a Lenovo M55 SFF desktop I use for a media center computer
(XBMCbuntu). It has the AD1983 chip on it. From the factory, it had 2
ports in the back (mic + speaker) , and 2 ports in the front (mic +
speaker). It also has an on-board speaker.

It never shipped with a SPDIF output, but I soldered a wire to the
AD1983 and installed an RCA jack on the back of the case. Earlier
versions of XBMC shipped with a different version of alsa, and I was
able to use this custom SPDIF output without issue for the last year
or two, but the current version only enables the 'proper'
inputs/outputs

I have tried editing the module options and specifying several
different models, but the documentation doesn't list any 'model'
options for the AD1983.

I suspect I need to overwrite the pin configs.
cat init_pin_configs:
0x05 0x01014010
0x06 0x0221401f
0x07 0x991301f0
0x08 0x02a19020
0x09 0x0181302e
0x0a 0x414511f0

[ 2421.907510] hda-codec: reconfiguring
[ 2421.980324] autoconfig: line_outs=1 (0x5/0x0/0x0/0x0/0x0) type:line
[ 2421.980328]    speaker_outs=1 (0x7/0x0/0x0/0x0/0x0)
[ 2421.980330]    hp_outs=1 (0x6/0x0/0x0/0x0/0x0)
[ 2421.980332]    mono: mono_out=0x0
[ 2421.980333]    inputs:
[ 2421.980335]      Mic=0x8
[ 2421.980336]      Line=0x9
[ 2421.981858] input: HDA Intel Front Headphone as
/devices/pci0000:00/0000:00:1b.0/sound/card0/input34
[ 2421.984829] input: HDA Intel Line Out as
/devices/pci0000:00/0000:00:1b.0/sound/card0/input33
[ 2421.985848] input: HDA Intel Line as
/devices/pci0000:00/0000:00:1b.0/sound/card0/input32


Does anyone have any guidance for how I may re-enable the SPDIF on the
AD1983 when my BIOS disables it by default?

Where else should I look for information on pin configs?

Thanks!