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  • AndyW
    started a topic Northern Islands HDMI audio?

    Northern Islands HDMI audio?

    Can I ask what is the state of play with HDMI audio on Northern Islands? I know it is pretty much done now for Evergreen thanks to Rafał Miłecki, but for N. I. the X.Org wiki says "Todo". My HD 4670 has pretty much given up the ghost (& doesn't seem to respond to the oven-baking trick either) so I am looking now at upgrading to "Turks" (HD 6670) as that looks like the nearest equivalent in the N. I. range and TDP should be OK for my passive HTPC case. Our main use is for HTPC TV & media playback, so 3D performance is not of great interest to us. I am also looking ahead to 3D TV...even though I know it is early days yet - HDMI 1.4 seems to be a requirement for that, which is available on N.I. h/w but not Evergreen as far as I can see.

    If anyone (@zajec or Christian Konig?) is working on N. I. HDMI audio (or planning to) I am up for registry hacking, testing or anything else I can do to help. I did some of this for HD 4670 HDMI audio on radeonhd a while back. If HDMI audio is a foreseeable prospect we can manage on fglrx and/or separate audio for the time being. As stated above I would plan on purchasing HD 6670 h/w.

    On the topic of HDMI 1.4, is support for that planned in radeon OSS driver, or already done - or is it all done in h/w anyway?

    Regards,
    Andrew

  • Zajec
    replied
    Originally posted by barkas View Post
    Just generalized frustration. I was stupid enough to again buy an ATI GPU and progress is so painfully slow. In fact, when the ATI drivers was ok, the nouveau driver wasn't even there. Now, I am told the Nouveau driver is better than the ATI driver even though it's reverse engineered and the ATI one is supported by the manufacturer.

    This evergreen / NI HDMI audio debacle is just an example of how long it takes to integrate a basic feature.
    AMD was "always" quite clear about features they're working on. We knew since years to not expect official HDMI audio or UVD support. On the other hand noone is making any problems to include support for such things coming from independent developers and RE.
    That's quite perfect for me. They do great job around basics and RE guys can focus on few specific things only. If we had to RE everything, radeon wouldn't be in it's current state for few next years.

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  • barkas
    replied
    Originally posted by bridgman View Post
    Not sure I understand. The info has already been released AFAIK, it's "just" a question of getting that information integrated into the driver.

    I say "just" not to trivialize it, but to distinguish that effort from IP review and release.

    If you're talking about the audio driver (not our area but maybe we can help) the spec I was talking about was Intel HD Audio aka Azalia. I was told there was an update to the public spec in 2010 which added multichannel support but I haven't had a chance to look at the actual docs yet.
    Just generalized frustration. I was stupid enough to again buy an ATI GPU and progress is so painfully slow. In fact, when the ATI drivers was ok, the nouveau driver wasn't even there. Now, I am told the Nouveau driver is better than the ATI driver even though it's reverse engineered and the ATI one is supported by the manufacturer.

    This evergreen / NI HDMI audio debacle is just an example of how long it takes to integrate a basic feature.

    Leave a comment:


  • bridgman
    replied
    Yeah, but I was told it was a v2 update (instead of 1.0a), and when I looked in the change log for the doc most of the entries were pretty cryptic. I haven't had time to sit down and diff the two docs to see what was actually added.

    Leave a comment:


  • Zajec
    replied
    Originally posted by bridgman View Post
    If you're talking about the audio driver (not our area but maybe we can help) the spec I was talking about was Intel HD Audio aka Azalia. I was told there was an update to the public spec in 2010 which added multichannel support but I haven't had a chance to look at the actual docs yet.
    Then you must mean:
    http://www.intel.com/content/www/xa/...ification.html
    (updated June 17, 2010).

    Leave a comment:


  • bridgman
    replied
    Originally posted by barkas View Post
    It's frustrating how difficult this seems to be for ATI/AMD. Sometimes I think we would be better off with a reverse engineered driver where the developers hack what they can and don't have to wait years for some legal review at AMD.
    Not sure I understand. The info has already been released AFAIK, it's "just" a question of getting that information integrated into the driver.

    I say "just" not to trivialize it, but to distinguish that effort from IP review and release.

    If you're talking about the audio driver (not our area but maybe we can help) the spec I was talking about was Intel HD Audio aka Azalia. I was told there was an update to the public spec in 2010 which added multichannel support but I haven't had a chance to look at the actual docs yet.

    Leave a comment:


  • barkas
    replied
    It's frustrating how difficult this seems to be for ATI/AMD. Sometimes I think we would be better off with a reverse engineered driver where the developers hack what they can and don't have to wait years for some legal review at AMD.

    Leave a comment:


  • dhewg
    replied
    Originally posted by Zajec View Post
    dhewg: great, waiting to hear from you about the results. Christian reported his Cayman still doesn't work with that patch So there is still some issue to be resolved. But maybe it'll be working for you, just like it works for me.
    Works just fine Added my Tested-by.

    Leave a comment:


  • Kjella
    replied
    Originally posted by Zajec View Post
    Can you let me know, what specs are you referring to, please?
    Not entirely sure what specs Bridgman is referring to but the HDMI 1.3a spec can be downloaded from bottom link here. It refers again to CEA-861-D which unfortunately does not look to be free but if I link to google the first link may be useful . That should be all the specs needed for multi-channel audio for both LPCM and Bitstreaming, if you can manipulate the audio packets directly. I don't know how abstracted away that is by the hardware.

    Leave a comment:


  • Vincenzov
    replied
    Works!!!!!!!!!!
    Radeon 6450 audio hdmi out
    Thanks

    Leave a comment:

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