mirror_ubuntu-kernels/drivers/gpu/drm/amd/display
Aurabindo Pillai 7b353e41b4 drm/amd/display: Prevent dpcd reads with passive dongles
[why]
During hotplug, a DP port may be connected to the sink through
passive adapter which does not support DPCD reads. Issuing reads
without checking for this condition will result in errors

[how]
Ensure the link is in aux_mode before initiating operation that result
in a DPCD read.

Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-05-05 13:12:11 -04:00
..
amdgpu_dm drm/amd/display: Prevent dpcd reads with passive dongles 2020-05-05 13:12:11 -04:00
dc drm/amd/display: Add 4 to 1 MPC split support 2020-05-05 13:12:04 -04:00
dmub drm/amd/display: Add panel cntl id for set backlight level. 2020-04-28 16:19:24 -04:00
include drm/amd/display: query hdcp capability during link detect 2020-04-09 10:43:17 -04:00
modules drm/amd/display: add addition dc type to translate to dmub fw type 2020-05-05 13:11:49 -04:00
Kconfig drm: amd/display: fix Kconfig help text 2020-04-23 15:06:41 -04:00
Makefile drm/amd/display: Drop CONFIG_DRM_AMD_DC_DMUB guards 2019-11-13 15:29:42 -05:00
TODO drm/amd/display: Convert remaining loggers off dc_logger 2018-07-13 14:48:42 -05:00