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drm/amd/display: stop top_mgr when type change to non-MST during s3

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[Why]
Driver keeps the invalid information cause report the
incorrect monitor which save in remote sink to OS

[How]
When connector type change from MST to non-MST,
stop the topology manager.

Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lewis Huang
2020-10-08 14:09:45 +08:00
committed by Alex Deucher
parent 202ad02da3
commit e748b59fb7
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/amd/display/dc/core/dc_link.c
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@@ -854,6 +854,7 @@ static bool dc_link_detect_helper(struct dc_link *link,
struct dpcd_caps prev_dpcd_caps;
bool same_dpcd = true;
enum dc_connection_type new_connection_type = dc_connection_none;
enum dc_connection_type pre_connection_type = dc_connection_none;
bool perform_dp_seamless_boot = false;
const uint32_t post_oui_delay = 30; // 30ms
@@ -889,6 +890,7 @@ static bool dc_link_detect_helper(struct dc_link *link,
link_disconnect_sink(link);
if (new_connection_type != dc_connection_none) {
pre_connection_type = link->type;
link->type = new_connection_type;
link->link_state_valid = false;
@@ -962,6 +964,12 @@ static bool dc_link_detect_helper(struct dc_link *link,
return true;
}
// link switch from MST to non-MST stop topology manager
if (pre_connection_type == dc_connection_mst_branch &&
link->type != dc_connection_mst_branch) {
dm_helpers_dp_mst_stop_top_mgr(link->ctx, link);
}
if (link->type == dc_connection_mst_branch) {
LINK_INFO("link=%d, mst branch is now Connected\n",
link->link_index);