[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

            Bug ID: 103404
           Summary: HDMI Audio with RX Vega not working on
                    drm-next-4.15-dc (device listed as unconnected)
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: randomsalad@gmail.com

Created attachment 134990
  --> https://bugs.freedesktop.org/attachment.cgi?id=134990&action=edit
dmesg output filtered to show drm messages

When using a DC-patched kernel (the drm-next-4.15-dc branch to be specific),
HDMI audio output on RX Vega does not work, as the device(s) are simply listed
as unconnected.

Audio over DisplayPort works, but the second device (A 5.1 Surround Sound AV
Receiver) does not register as an audio-output.
It doesn't matter which port is used; All 4 physical monitor outputs (3
DisplayPorts, 1 HDMI), when connected to another device, be it the AV receiver
or the monitor, fails to register any audio outputs. Only
DisplayPort->DisplayPort works.

The attached dmesg log file shows both devices being connected and detected as
audio outputs by drm, including the number of configurations available on each.

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #1 from randomsalad@gmail.com ---
Created attachment 134991
  --> https://bugs.freedesktop.org/attachment.cgi?id=134991&action=edit
Parsed edid output for the receiver.

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #2 from randomsalad@gmail.com ---
Created attachment 134992
  --> https://bugs.freedesktop.org/attachment.cgi?id=134992&action=edit
Parsed edid output for the monitor, connected via DP.

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #3 from randomsalad@gmail.com ---
Created attachment 134993
  --> https://bugs.freedesktop.org/attachment.cgi?id=134993&action=edit
cat /proc/asound/card0/eld#0.*

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #4 from monkeykulig@web.de ---
I have exactly the same problem here with a rx vega 56 and rx vega 64

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #5 from Harry Wentland <harry.wentland@amd.com> ---
It looks like we missed this when bringing up Vega. We got a patch in the
works. It should land sometime this week.

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #6 from monkeykulig@web.de ---
Thank you for your quick response,  I am glad to hear that a patch will be
there soon

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

Leo <sunpeng.li@amd.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sunpeng.li@amd.com

--- Comment #7 from Leo <sunpeng.li@amd.com> ---
Created attachment 135191
  --> https://bugs.freedesktop.org/attachment.cgi?id=135191&action=edit
[PATCH 1/2] drm/amd: Add DCE12 resource strap registers

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #8 from Leo <sunpeng.li@amd.com> ---
Created attachment 135192
  --> https://bugs.freedesktop.org/attachment.cgi?id=135192&action=edit
[PATCH 2/2] drm/amd/display: Read resource_straps from registers for DCE12

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #9 from Leo <sunpeng.li@amd.com> ---
@randomsalad, I've attached the patches. Please let me know if they resolve the
issue.

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #10 from randomsalad@gmail.com ---
Created attachment 135197
  --> https://bugs.freedesktop.org/attachment.cgi?id=135197&action=edit
Compilation error for the patch

The proposed patch doesn't compile when applied to an otherwise clean version
of drm-next-4.15-dc (commit id 9b38bd1b8f5c874c3d1f330e0dcf4e7d84137477 at time
of writing). Does it rely on other changes present on the WIP branch? I've
attached the compilation errors.

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #11 from randomsalad@gmail.com ---
Whoops, seems I blundered and didn't see there was not one, but two different
patch files.

The compilation succeeds now, will proceed to testing it.

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

--- Comment #12 from randomsalad@gmail.com ---
I can confirm the patch works, and was the only thing missing to get HDMI audio
working on my Vega card. I can confirm it works for atleast 5.1 and 2.0 channel
audio as those are the only options available to me with my Receiver, though
this was just what I needed.

Thanks!

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[Bug 103404] HDMI Audio with RX Vega not working on drm-next-4.15-dc (device listed as unconnected)

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https://bugs.freedesktop.org/show_bug.cgi?id=103404

Leo Li <sunpeng.li@amd.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #13 from Leo Li <sunpeng.li@amd.com> ---
Thanks for the confirmation, marking this as resolved.

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