drm/amd/display: add option to disable DCC for DCC 128b request

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1. reverts commit e67f51012740 ("dc: temp disable DCC on high res.")
- default still DCC enabled

2. add debug options to decide how DCC is disabled
- disable DCC
- disable DCC if DCC requires 128b (aka. half) request
-- observed compressed data corruption result in screen corruption in
full (256b) request while half (128b) would cause DCN to hang, result in
DF hang

Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Tony Cheng 2017-09-25 18:06:11 -04:00 • committed by Alex Deucher

parent db64fbe732

commit a32a7708ae

2 changed files with 16 additions and 13 deletions

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11

drivers/gpu/drm/amd/display/dc/dc.h

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18

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c

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