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

drm/amd/display: Fix DP MST sinks removal issue

2023-03-15T22:18:45+00:00

[Why] In USB4 DP tunneling, it's possible to have this scenario that the path becomes unavailable and CM tears down the path a little bit late. So, in this case, the HPD is high but fails to read any DPCD register. That causes the link connection type to be set to sst. And not all sinks are removed behind the MST branch. [How] Restore the link connection type if it fails to read DPCD register. Cc: stable@vger.kernel.org Cc: Mario Limonciello Reviewed-by: Wenjing Liu Acked-by: Qingqing Zhuo Signed-off-by: Cruise Hung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

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: Add previously missing includes

2023-02-16T03:24:39+00:00

Add includes that were previously missing to reduce the number of -Wmissing-prototypes warnings. Signed-off-by: Arthur Grillo 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: move public dc link function implementation to dc_link_exports

2023-02-14T21:06:28+00:00

[why] Link is a subcomponent in dc. DM should be aware of dc link structure as one of the abstracted objects maintained by dc. However it should have no idea of the existence of a link component in dc dedicated to maintain the states of dc link structure. As such we are moving link interfaces out of dc_link.h and directly added to dc.h. We are grandually fading out the explicit inclusion of dc_link header and eventually delete it. On dc side, since link is a subcomponent behind dc interfaces, it is not a good idea to implement dc interfaces in each individual subcomponent of link which is already a subcomponent of dc. So we are decoupling it by implementing a dc_link_exports in dc. This file will be a thin translation layer that breaks the dependency so link is able to make interface changes without breaking DM. Reviewed-by: Jun Lei Acked-by: Qingqing Zhuo Signed-off-by: Wenjing Liu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Remove the unused variable pre_connection_type

2023-02-14T21:04:42+00:00

Variable pre_connection_type is not effectively used, so delete it. Reported-by: Abaci Robot Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4031 Signed-off-by: Jiapeng Chong 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: clean up some inconsistent indentings

2023-02-14T21:04:13+00:00

drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_factory.c:145 get_ddc_line() warn: inconsistent indenting drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_factory.c:201 dc_link_construct_phy() warn: inconsistent indenting Reported-by: Abaci Robot Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4026 Signed-off-by: Yang Li 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