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Northern Islands HDMI audio?

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  • #31
    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, 06:21 AM.

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

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      • #33
        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?)

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        • #34
          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, 07:11 AM.

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          • #35
            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.

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

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              • #37
                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, 01:14 PM.

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

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

                    I guess not, since
                    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?

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                    • #40
                      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?


                      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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