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Working DisplayPort Arrives For Radeon KMS

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  • Working DisplayPort Arrives For Radeon KMS

    Phoronix: Working DisplayPort Arrives For Radeon KMS

    David Airlie has announced on his blog that he and Alex Deucher have finally got support for DisplayPort-driven graphics cards and monitors working with the open-source ATI Linux driver stack. Not only is there user-space mode-setting support via the xf86-video-ati DDX driver, but the kernel mode-setting for this latest monitor interface is working too...

    http://www.phoronix.com/vr.php?view=Nzc0Mw

  • #2
    Ah, the beast has been tamed. Well done, both of you!

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    • #3
      Cool!

      Will this also work with Evergreen, or does it use DisplayPort differently than R600/R700 ?

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      • #4
        I thought only

        http://cgit.freedesktop.org/~agd5f/x...ati/log/?h=dp2

        had support for DP?

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        • #5
          Looks like the code has moved on from agd5f's branch :

          http://cgit.freedesktop.org/xorg/dri...?h=displayport

          http://git.kernel.org/?p=linux/kerne.../drm-radeon-dp

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          • #6
            Originally posted by Louise View Post
            Will this also work with Evergreen, or does it use DisplayPort differently than R600/R700 ?
            last news was that even DVI doesn't work on Evergreen yet. Modesetting changed quite a bit due to eyefinity.

            Implementing DP on r600 is a prerequisite to implementing DP on evergreen, though.

            see here.

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            • #7
              Originally posted by rohcQaH View Post
              last news was that even DVI doesn't work on Evergreen yet. Modesetting changed quite a bit due to eyefinity.

              Implementing DP on r600 is a prerequisite to implementing DP on evergreen, though.

              see here.
              I see. Thanks for clearing that out

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              • #8
                What proportion of users actually use DP? Reason I ask is that I've never actually seen any kind of display device that actually uses this kind of connector (although I do have one board that has a DP output... which has never been used).

                Just curious, not implying anything.

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                • #9
                  Originally posted by droidhacker View Post
                  What proportion of users actually use DP? Reason I ask is that I've never actually seen any kind of display device that actually uses this kind of connector (although I do have one board that has a DP output... which has never been used).

                  Just curious, not implying anything.
                  Its a relatively new standard and I would assume it will get quite a bit of support over time since unlike DVI/HDMI, it is royalty free.

                  It also has other benefits such as greater bandwidth, but these may not be of too much use on consumer laptops/desktops with average sized monitors.

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                  • #10
                    It's just starting to become important; took longer than expected for DP displays to hit the market in volume.

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