[Bug 104880] No sound via DP on R9 Fury (4.14 + DC patches)

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=104880

            Bug ID: 104880
           Summary: No sound via DP on R9 Fury (4.14 + DC patches)
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: lakostis@altlinux.org

Created attachment 137079
  --> https://bugs.freedesktop.org/attachment.cgi?id=137079&action=edit
dmesg

Greetings!

Trying to make DP sound work on my R9 Fury card.

The problem: no sound caps are detected for monitor via DP

Monitor ASUS PB278 supports DP sound playback (tested with nvidia card and
older R9 2x card), but it's not detected during boot or plug/unplug operations

dmesg:
(did unplug and plugged again)
[  175.415648] [drm] Rx Caps: 
[  175.549293] [drm] SADs count is: -2, don't need to read it
[  175.554060] [drm] HBRx4 pass VS=0, PE=0
[  175.554363] [drm] ASUS PB278: [Block 0] 
[  175.554367] [drm] ASUS PB278: [Block 1] 
[  175.554373] [drm] dc_link_detect: manufacturer_id = 6904, product_id = 27A3,
serial_number = 8C18, manufacture_week = 30, manufacture_year = 26,
display_name = ASUS PB278, speaker_flag = 0, audio_mode_count = 0
[  175.554978] [drm] {2560x1440, 2720x1481@241500Khz}
[  175.577625] [drm] HBRx4 pass VS=0, PE=0
[  293.823823] [drm] Rx Caps: 
[  293.952473] [drm] SADs count is: -2, don't need to read it
[  293.957217] [drm] HBRx4 pass VS=0, PE=0
[  293.957516] [drm] ASUS PB278: [Block 0] 
[  293.957520] [drm] ASUS PB278: [Block 1] 
[  293.957526] [drm] dc_link_detect: manufacturer_id = 6904, product_id = 27A3,
serial_number = 8C18, manufacture_week = 30, manufacture_year = 26,
display_name = ASUS PB278, speaker_flag = 0, audio_mode_count = 0
[  293.958130] [drm] {2560x1440, 2720x1481@241500Khz}

As you see speaker_flag and audio_mode_count all zero and /proc/asound/<*>/eld*
info all empty:

[lakostis@lks HDMI]$ fgrep -r monitor eld*
eld#0.0:monitor_present         0
eld#0.1:monitor_present         0
eld#0.2:monitor_present         0
eld#0.3:monitor_present         0
eld#0.4:monitor_present         0
eld#0.5:monitor_present         0

glxinfo:
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: X.Org (0x1002)
    Device: AMD Radeon (TM) R9 Fury Series (FIJI / DRM 3.23.0 /
4.14.0-lks-wks-alt10, LLVM 6.0.0) (0x7300)
    Version: 17.3.3
    Accelerated: yes
    Video memory: 4060MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 4.5
    Max compat profile version: 3.0
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.1
Memory info (GL_ATI_meminfo):
    VBO free memory - total: 4059 MB, largest block: 4059 MB
    VBO free aux. memory - total: 4092 MB, largest block: 4092 MB
    Texture free memory - total: 4059 MB, largest block: 4059 MB
    Texture free aux. memory - total: 4092 MB, largest block: 4092 MB
    Renderbuffer free memory - total: 4059 MB, largest block: 4059 MB
    Renderbuffer free aux. memory - total: 4092 MB, largest block: 4092 MB
Memory info (GL_NVX_gpu_memory_info):
    Dedicated video memory: 4060 MB
    Total available memory: 8153 MB
    Currently available dedicated video memory: 4059 MB
OpenGL vendor string: X.Org
OpenGL renderer string: AMD Radeon (TM) R9 Fury Series (FIJI / DRM 3.23.0 /
4.14.0-lks-wks-alt10, LLVM 6.0.0)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 17.3.3
(git-80f5f27)
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 3.0 Mesa 17.3.3 (git-80f5f27)
OpenGL shading language version string: 1.30
OpenGL context flags: (none)

OpenGL ES profile version string: OpenGL ES 3.1 Mesa 17.3.3 (git-80f5f27)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10

Mesalib - 17.3.3
Kernel - 4.14.15 + DC patches till end of Oct 2017.

Module params for amdgpu:
$ cat /etc/modprobe.d/amdgpu.conf
# enable DRM extra debugging messages
#options drm debug=0x1e

options amdgpu si_support=0 dc=1 audio=1
options radeon si_support=1

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