kernel/linux.git/drivers/gpu/drm/amd/display/dc/link/protocols, branch v6.3

drm/amd/display: Ext displays with dock can't recognized after resume

2023-03-02T03:42:53+00:00

[Why] Needs to set the default value of the LTTPR timeout after resume. [How] Set the default (3.2ms) timeout at resuming if the sink supports LTTPR Reviewed-by: Jerry Zuo Acked-by: Qingqing Zhuo Signed-off-by: Ryan Lin Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: upstream link_dp_dpia_bw.c

2023-02-16T03:20:49+00:00

[WHY & HOW] - make link_dp_dpia_bw.c available for linux. - add the verify link peak bw - clean up code and comment format. Reviewed-by: Jun Lei Acked-by: Qingqing Zhuo Signed-off-by: Mustapha Ghaddar Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Remove the unused variable ds_port

2023-02-14T21:04:34+00:00

Variable ds_port is not effectively used, so delete it. drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_dp_capability.c:280:35: warning: variable ‘ds_port’ set but not used. Reported-by: Abaci Robot Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4030 Signed-off-by: Jiapeng Chong Signed-off-by: Alex Deucher

drm/amd/display: Simplify bool conversion

2023-02-14T21:04:04+00:00

./drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c:1610:68-73: WARNING: conversion to bool not needed here Reported-by: Abaci Robot Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4025 Signed-off-by: Yang Li Signed-off-by: Alex Deucher

drm/amd/display: on dp link lost event toggle dpms for master pipe only

2023-02-14T21:03:49+00:00

[why] We mistakenly toggle dpms state for non master pipe when handling link lost. A non master pipe doesn't connect to a backend. So it is toggling dpms for non master is undefined and caused NULL pointer dereference. [how] Add helper functions to find an array of active master pipes for current link and only toggle DPMS for active master pipes connected to the link. Add assert in case we get called to program dpms with non master pipe. Reviewed-by: Alvin Lee Acked-by: Qingqing Zhuo Signed-off-by: Wenjing Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: do not set RX back to SST mode for non 0 mst stream count

2023-02-14T21:01:16+00:00

[why] a recent regression has caused us to mistakenly switch RX back to SST mode when there are remaining mst stream enabled to the link. We are missing a condition check for stream count before setting RX back to SST mode. [how] Add stream count check condition back and do some further refactor so the logic is easier to understand to prevent future coding error in this sequence. Reviewed-by: Samson Tam Acked-by: Qingqing Zhuo Signed-off-by: Wenjing Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: break down dc_link.c

2023-02-08T22:15:51+00:00

[why] dc_link contains over 30k line of code, the decision is to break it down to files residing in link folder based on functionality. This change is the last break down change which will remove dc_link.c file after everything is broken down. [how] Move remaining dc_link.c functions into link_detection, link_dpms, link_validation, link_resource, and link_fpga and remove dc_link. Reviewed-by: George Shen Acked-by: Qingqing Zhuo Signed-off-by: Wenjing Liu Signed-off-by: Alex Deucher

drm/amd/display: Add Function declaration in dc_link

2023-01-31T19:03:16+00:00

[WHY] Housekeeping cleaning and adding declaration for function to be called from DM layer [HOW] Adding public functions to dc_link.h Reviewed-by: Jun Lei Acked-by: Alex Hung Signed-off-by: Mustapha Ghaddar Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Pass DSC slice height to PSR FW

2023-01-24T18:26:25+00:00

[Why] When DSC is enabled, the PSRSU seletive update region must be multiple number of DSC slice height number. The original solution is to overwrite the SU Y granularity by DSC slice height in DAL driver. However, the size of the SU Y granularity variable only has 8 bytes and the DSC slice height may over the 8 bytes size. [How] Instead of overwriting the SU Y granularity value, add a new DSC slice height pararmeter and pass it to DMUB PSRSU FW. The PSRSU FW will refer to the DSC slice height value and extend the SU region. Reviewed-by: Dennis Chan Reviewed-by: ChunTao Tso Acked-by: Alan Liu Signed-off-by: Robin Chen Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: merge dc_link_dp into dc_link

2023-01-24T18:26:25+00:00

[why] Temporarly merge dc_link_dp functions into dc_link for the purpose of removing dc_link_dp files. This is a transitional change for later commits where we will further refactor dc_link file. Reviewed-by: George Shen Acked-by: Alan Liu Signed-off-by: Wenjing Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher