drm/amd/display: Use pwrseq instance to determine eDP instance

[Why & How]
Link index doesn't always correspond to the appropriate eDP instance.
We can assume lower link index is a lower eDP instance and set panel
control instance accordingly.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Jake Wang <haonan.wang2@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index f9a33dc52c4555ad6ac992cfe5c159f4e0838460..2cfb53387c55f119ad0a98b55ba7a0032f3fb090 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1383,6 +1383,8 @@ static bool dc_link_construct(struct dc_link *link,
        struct dc_bios *bios = init_params->dc->ctx->dc_bios;
        const struct dc_vbios_funcs *bp_funcs = bios->funcs;
        struct bp_disp_connector_caps_info disp_connect_caps_info = { 0 };
+       struct dc_link *edp_links[MAX_NUM_EDP];
+       int edp_num;
 
        DC_LOGGER_INIT(dc_ctx->logger);
 
@@ -1506,7 +1508,11 @@ static bool dc_link_construct(struct dc_link *link,
                (link->link_id.id == CONNECTOR_ID_EDP ||
                        link->link_id.id == CONNECTOR_ID_LVDS)) {
                panel_cntl_init_data.ctx = dc_ctx;
-               panel_cntl_init_data.inst = link->link_index;
+               get_edp_links(panel_cntl_init_data.ctx->dc, edp_links, &edp_num);
+               if ((edp_num > 1) && (link->link_index > edp_links[0]->link_index))
+                       panel_cntl_init_data.inst = 1;
+               else
+                       panel_cntl_init_data.inst = 0;
                link->panel_cntl =
                        link->dc->res_pool->funcs->panel_cntl_create(
                                                                &panel_cntl_init_data);