mirror_ubuntu-kernels/drivers/gpu/drm/amd
Dale Zhao 0a6414e75d drm/amd/display: Wait edp HPD to high in detect_sink
[Why]
In 99% user case, edp will be post by vbios.
In 1% / current case: Lenovo don't light up edp panel in vbios
post stage, vbios won't be lit up. Thus in dal when we init DCN
10 hw, we power up edp, then we start detect_sink, but internal
time is too short, when we detect it, HPD is still low, so we don't
detect the edp, and edp shows black.

[How]
When we init hw, we wait edp HPD to high after power up edp.

Signed-off-by: Dale Zhao <dale.zhao@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-12-18 18:25:12 -05:00
..
acp drm/amdgpu: Remove wrapper layer of cgs irq handling 2018-03-21 14:36:58 -05:00
amdgpu drm/amdgpu: correct the return value for error case 2018-12-18 17:39:18 -05:00
amdkfd drm/amdkfd: Fix handling of return code of dma_buf_get 2018-12-18 17:39:11 -05:00
display drm/amd/display: Wait edp HPD to high in detect_sink 2018-12-18 18:25:12 -05:00
include drm/amdkfd: Add support for doorbell BOs 2018-12-07 18:14:00 -05:00
lib drm/amdgpu: add license to Makefiles 2017-12-07 11:51:10 -05:00
powerplay Merge branch 'drm-next-4.21' of git://people.freedesktop.org/~agd5f/linux into drm-next 2018-12-13 10:06:34 +10:00