drm/i915/dp_mst: Use intel_dp_mst_active_streams() instead of open-coding it

Use intel_dp_mst_active_streams() everywhere, instead of open-coding it.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://lore.kernel.org/r/20250404150310.1156696-6-imre.deak@intel.com

Author: ideak

drivers/gpu/drm/i915/display/intel_dp.c

@@ -5018,7 +5018,7 @@ intel_dp_check_mst_status(struct intel_dp *intel_dp)
 
 		drm_dbg_kms(display->drm, "DPRX ESI: %4ph\n", esi);
 
-		if (intel_dp->mst.active_links > 0 && link_ok &&
+		if (intel_dp_mst_active_streams(intel_dp) > 0 && link_ok &&
 		    esi[3] & LINK_STATUS_CHANGED) {
 			if (!intel_dp_mst_link_status(intel_dp))
 				link_ok = false;

drivers/gpu/drm/i915/display/intel_dp_mst.c

@@ -1028,7 +1028,7 @@ static void mst_stream_disable(struct intel_atomic_state *state,
 		to_intel_connector(old_conn_state->connector);
 	enum transcoder trans = old_crtc_state->cpu_transcoder;
 
-	if (intel_dp->mst.active_links == 1)
+	if (intel_dp_mst_active_streams(intel_dp) == 1)
 		intel_dp->link.active = false;
 
 	intel_hdcp_disable(intel_mst->connector);
@@ -1144,7 +1144,7 @@ static void mst_stream_post_pll_disable(struct intel_atomic_state *state,
 	struct intel_encoder *primary_encoder = to_primary_encoder(encoder);
 	struct intel_dp *intel_dp = to_primary_dp(encoder);
 
-	if (intel_dp->mst.active_links == 0 &&
+	if (intel_dp_mst_active_streams(intel_dp) == 0 &&
 	    primary_encoder->post_pll_disable)
 		primary_encoder->post_pll_disable(state, primary_encoder, old_crtc_state, old_conn_state);
 }
@@ -1157,7 +1157,7 @@ static void mst_stream_pre_pll_enable(struct intel_atomic_state *state,
 	struct intel_encoder *primary_encoder = to_primary_encoder(encoder);
 	struct intel_dp *intel_dp = to_primary_dp(encoder);
 
-	if (intel_dp->mst.active_links == 0)
+	if (intel_dp_mst_active_streams(intel_dp) == 0)
 		primary_encoder->pre_pll_enable(state, primary_encoder,
 						pipe_config, NULL);
 	else
@@ -1303,7 +1303,7 @@ static void mst_stream_enable(struct intel_atomic_state *state,
 	struct drm_dp_mst_topology_state *mst_state =
 		drm_atomic_get_new_mst_topology_state(&state->base, &intel_dp->mst.mgr);
 	enum transcoder trans = pipe_config->cpu_transcoder;
-	bool first_mst_stream = intel_dp->mst.active_links == 1;
+	bool first_mst_stream = intel_dp_mst_active_streams(intel_dp) == 1;
 	struct intel_crtc *pipe_crtc;
 	int ret, i, min_hblank;
 

drivers/gpu/drm/i915/display/intel_hdcp.c

@@ -24,6 +24,7 @@
 #include "intel_display_power_well.h"
 #include "intel_display_rpm.h"
 #include "intel_display_types.h"
+#include "intel_dp_mst.h"
 #include "intel_hdcp.h"
 #include "intel_hdcp_gsc.h"
 #include "intel_hdcp_regs.h"
@@ -137,7 +138,7 @@ intel_hdcp_required_content_stream(struct intel_atomic_state *state,
 		data->k++;
 
 		/* if there is only one active stream */
-		if (dig_port->dp.mst.active_links <= 1)
+		if (intel_dp_mst_active_streams(&dig_port->dp) <= 1)
 			break;
 	}
 	drm_connector_list_iter_end(&conn_iter);