Nicholas Kazlauskas 65276f2beb drm/amd/display: Fix unintialized max_bpc state values
[Why]
If the "max bpc" isn't explicitly set in the atomic state then it
have a value of 0. This has the correct behavior of limiting a panel
to 8bpc in the case where the panel supports 8bpc. In the case of eDP
panels this isn't a true assumption - there are panels that can only
do 6bpc.

Banding occurs for these displays.

[How]
Initialize the max_bpc when the connector resets to 8bpc. Also carry
over the value when the state is duplicated.

Bugzilla: https://bugs.freedesktop.org/108825
Fixes: 307638884f72 ("drm/amd/display: Support amdgpu "max bpc" connector property")

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-12-11 15:52:36 -05:00
2018-10-31 08:54:14 -07:00
2018-11-15 10:59:37 -06:00
2018-10-31 11:01:38 -07:00
2018-11-15 11:26:09 -06:00
2018-11-18 12:21:09 -08:00
2018-04-15 17:21:30 -07:00
2018-11-18 10:15:09 -08:00
2017-11-17 17:45:29 -08:00
2018-11-19 10:40:33 +10:00
2018-11-18 13:33:44 -08:00

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