https://bugs.freedesktop.org/show_bug.cgi?id=81924
Priority: medium
Bug ID: 81924
Assignee: dri-devel at lists.freedesktop.org
Summary: No Audio over DisplayPort
Severity: normal
Classification: Unclassified
OS: All
Reporter: stefan.bruens at rwth-aachen.de
Hardware: Other
Status: NEW
Version: DRI CVS
Component: DRM/Radeon
Product: DRI
Currently audio is not supported when DP is used for connecting the monitor.
This works if the monitor is connected using HDMI, or when fglrx is used.
I tried patching the driver with hardcoded values taken from the fglrx drivers
using radeontool, unfortunately, this was not sufficient.
1. added call in atombios_encoders.c:radeon_atom_encoder_mode_set(...) to
initialize audio when encoder mode is DP.
2. patched evergreen_hdmi.c:evergreen_hdmi_enable(...) and
evergreen_hdmi_setmode(...) to set same register values as fglrx.
3. patched dce6_afmt.c to set values matching fglrx.
Something is missing here ...
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