[alsa-devel] ALC892 Support (Intel HDA) - HDMI

[Raymond Yau]

2011/5/16 Jeremy Bush <contractfrombelow at gmail.com>

> Hello-
>
> I'm trying to get my Realtek ALC892 chip to work according to it's
> specifications over HDMI. The manufacturers site say it should be able to do
> 7.1+2 channels, 24bit audio and 192Khz sample rate.


7.1 is provided by 4 jack at rear panel ( green, black, orange and grey)
2 is provided by headphone at front panel



> However, it seems that the ALSA drivers (even the ones from the realtek
> website) limit the output to 2 channels, 16bit, 88.2KHz.
>
> Here is my system information that you can see these results:
>
> http://www.alsa-project.org/db/?f=5b55a63fea6580dfcbf1a85c7c734f977df798f1
>
> I see the ALC892 as being supported in the ALSA changelog, but I don't see
> any model options in Documentation/HD-Audio-Models.txt. I'm currently using
> "options snd-hda-intel model=6stack-digout" (as I have 6-jack with a SPDIF
> out on the motherboard) but I'm not sure that is actually doing anything.
>
>
As your codec info does not have "Side Playback Channel" and "Side Playback
Switch", it look like the model is used for 5stack motherboard which support
5.1

Do you hear any noise since Valerio reported noise appear when using the
model=auto in

http://thread.gmane.org/gmane.linux.alsa.devel/84653/focus=84724



> What's the *actual* support of this chipset?



Node 0x1e [Pin Complex] wcaps 0x400781: Stereo Digital
  Pincap 0x00000010: OUT
  Pin Default 0x014b1130: [Jack] SPDIF Out at Ext Rear
    Conn = Comb, Color = Black
    DefAssociation = 0x3, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=00, enabled=0
  Power states:  D0 D1 D2 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x06




> Is what I'm getting now the best I should expect over HDMI? I saw support
> in ALSA and bought the motherboard expecting it to be fully supported since
> the changelogs say support was added.
>


Codec: Intel CougarPoint HDMI

Address: 3
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x80862805
Subsystem Id: 0x80862805
Revision Id: 0x100000
No Modem Function Group found

Node 0x03 [Audio Output] wcaps 0x6611: 8-Channels Digital

  Control: name="IEC958 Playback Con Mask", index=1, device=0
  Control: name="IEC958 Playback Pro Mask", index=1, device=0
  Control: name="IEC958 Playback Default", index=1, device=0
  Control: name="IEC958 Playback Switch", index=1, device=0
  Device: name="HDMI 0", type="HDMI", device=3
  Converter: stream=8, channel=0
  Digital: Enabled
  Digital category: 0x0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0x1e]: 16 20 24 32
    formats [0x5]: PCM AC3
  Power states:  D0 D3 EPSS
  Power: setting=D0, actual=D0

Node 0x06 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x09000094: OUT Detect HBR HDMI DP
  Pin Default 0x18560020: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0x2, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=06, enabled=1
  Power states:  D0 D3 EPSS
  Power: setting=D0, actual=D0
  Connection: 1
     0x03




> I also tried with an ALC887 chipset as well, and got basically the same
> results.
>
> Any help getting this to work would be appreciated. Let me know if there's
> any other information required.
>

[ 2.090473] HDMI: detected monitor at connection type HDMI

[    2.090475] HDMI: available speakers: FL/FR
[    2.090477] HDMI: supports coding type LPCM: channels = 2, rates =
44100 48000 88200, bits = 16
[    2.090480] HDMI hot plug event: Pin=6 Presence_Detect=1 ELD_Valid=1
[    2.091104] PM: Hibernation image not present or could not be loaded.
[    2.091458]   Magic number: 11:515:605
[    2.094010] HDMI: detected monitor  at connection type HDMI
[    2.094103] HDMI: available speakers: FL/FR
[    2.094191] HDMI: supports coding type LPCM: channels = 2, rates =
44100 48000 88200, bits = 16




>
> Thank you-
> Jeremy
>