drm/amd/display: Check multiple internal displays for power optimization.

[Why & How]
only apply multiple display power optimization in case there are more
than one internal display.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 28b856e..9033533 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -149,6 +149,20 @@ static void destroy_links(struct dc *dc)
        }
 }
 
+static uint32_t get_num_of_internal_disp(struct dc_link **links, uint32_t num_links)
+{
+       int i;
+       uint32_t count = 0;
+
+       for (i = 0; i < num_links; i++) {
+               if (links[i]->connector_signal == SIGNAL_TYPE_EDP ||
+                               links[i]->is_internal_display)
+                       count++;
+       }
+
+       return count;
+}
+
 static bool create_links(
                struct dc *dc,
                uint32_t num_virtual_links)
@@ -250,6 +264,8 @@ static bool create_links(
                virtual_link_encoder_construct(link->link_enc, &enc_init);
        }
 
+       dc->caps.num_of_internal_disp = get_num_of_internal_disp(dc->links, dc->link_count);
+
        return true;
 
 failed_alloc:

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index b170e65..115468d 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -169,6 +169,7 @@ struct dc_caps {
        bool psp_setup_panel_mode;
        bool extended_aux_timeout_support;
        bool dmcub_support;
+       uint32_t num_of_internal_disp;
        enum dp_protocol_version max_dp_protocol_version;
        struct dc_plane_cap planes[MAX_PLANES];
        struct dc_color_caps color;