git: drm/radeon/dp: Fix long-standing bug in Display Port handling.

Rimvydas Jasinskas zrj at
Sun May 8 23:41:57 PDT 2016

commit 8a140387ae41e85be4beaf0b2a7b90ab997d1c86
Author: zrj <rimvydas.jasinskas at>
Date:   Sun May 8 18:42:08 2016 +0300

    drm/radeon/dp: Fix long-standing bug in Display Port handling.
    This fixes EDID information fetching from monitor through aux/iic
    when using Display Port and no longer requires providing binary
    EDID block with drm.edid_firmware="DP-1:edidfw_MONITOR" tunable.
    From testing/disecting looks like bug was from initial radeonkms port.
    While there, add hpd (hot plug detection) pin assignment for future
    reference when common drm i2c/iic over aux will be implemented.
    Changes intended only for Display-Port.
    Note that currently on DP cable remove or monitor power off when monitor
    is plugged-in DP connector stays in disconnected state (DP-only quirk).
    Tested-on: R7 360 BONAIRE w/ HP LA DP-1(1920x1200), HP LP DVI(1600x1200)
               HD5770 JUNIPER w/ DELL P2416D DP-1(2560x1440) and
                                             HDMI(1920x1200)[card limit]

Summary of changes:
 sys/dev/drm/radeon/atombios_dp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

DragonFly BSD source repository

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