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Thread: Northern Islands HDMI audio?

  1. #31
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    Hi, sorry my english is bad.
    A patch to apply kernel 3.4.0???
    I tried to patch the kernel with a patch, but I get a compile error radeon screen.
    Thanks
    Last edited by Vincenzov; 04-08-2012 at 06:21 AM.

  2. #32
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    Quote Originally Posted by Death Knight View Post
    I wish NI HDMI audio catches 3.5 merge window.
    Stereo only.

  3. #33
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    Quote Originally Posted by Vincenzov View Post
    Hi, sorry my english is bad.
    A patch to apply kernel 3.4.0???
    I tried to patch the kernel with a patch, but I get a compile error radeon screen.
    Thanks
    As far as I know there isn't any patch for Northern Islands HDMI audio support. Where did you get that patch?

    (Italian language: Per quanto ne so non c' nessuna patch per il supporto audio via HDMI per Northern Islands. Dove hai preso quella patch?)

  4. #34
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    i have try with this 0001-WIP-port-of-hdmi-dp-audio-code-to-newer-kernel.patch
    But error in compiling
    maybe I'm wrong does not include the 6000 series.
    But I still can not patch the kernel to fix radeon 5000

    this link
    http://lists.freedesktop.org/archive...ch/020857.html

    dce5.0
    Last edited by Vincenzov; 04-08-2012 at 07:11 AM.

  5. #35
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    It's not a question of 5xxx vs 6xxx -- that is Alex's "we had to hack some of the code out in order to be able to release it, but this has most of what you need" patch. It's not expected to compile or work in its current state, but we were hoping it would be useful to someone working on HDMI audio.

    I forget who asked about multichannel support -- first key point is that the limitation is in the generic audio driver, not the HDMI audio portion (we released info which should be enough for the HDMI audio hw). The HD Audio public spec used to be 2 channel only and our hardware used some third party info to support 5.1 etc..

    The public spec was recently updated to include multichannel support; what I don't know yet is whether the public HW spec matches our HW, ie whether that is sufficient to add multichannel support to the audio driver.

  6. #36
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    I realized, I personally just stereo sound.
    thanks
    Last edited by Vincenzov; 04-08-2012 at 10:19 AM.

  7. #37
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    hi, add kernel patch definition

    http://git.kernel.org/?p=linux/kerne...7e7830cfa9c137

    I compiled the kernel 3.4.0-rc5 but I can not hear audio with radeon 6450
    Last edited by Vincenzov; 05-02-2012 at 01:14 PM.

  8. #38
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    compiling next git and try :-).

  9. #39
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    Any news on this? Is this supposed to work now with the latest drm merge?

    I guess not, since
    Quote Originally Posted by agd5f View Post
    DCE5 audio (Northern Islands) is identical to DCE4 audio (evergreen).
    but drivers/gpu/drm/radeon/evergreen_hdmi.c reads
    Code:
    if (ASIC_IS_DCE5(rdev))
      return;
    Any other patches floating around for stereo output one can try?

  10. #40
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    Quote Originally Posted by bridgman View Post
    I forget who asked about multichannel support -- first key point is that the limitation is in the generic audio driver, not the HDMI audio portion (we released info which should be enough for the HDMI audio hw). The HD Audio public spec used to be 2 channel only and our hardware used some third party info to support 5.1 etc..

    The public spec was recently updated to include multichannel support; what I don't know yet is whether the public HW spec matches our HW, ie whether that is sufficient to add multichannel support to the audio driver.
    Can you let me know, what specs are you referring to, please?


    Quote Originally Posted by dhewg View Post
    Any news on this? Is this supposed to work now with the latest drm merge?
    I was recently hacking my NI card but it required other general HDMI/audio fixes first. Fortunately we have all improvements & fixes in Linus's tree right now.
    It means I focus strictly on NI now, I believe we will get HDMI audio support in 3.5 kernel. We've a long weekend in Poland this week, so give me few additional days.

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