diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
index b744253a5924..03424d20e9f7 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
@@ -7,10 +7,12 @@
  */
 
 #include <drm/drm_dp_helper.h>
+#include <drm/drm_dp_mst_helper.h>
 #include <drm/drm_hdcp.h>
 #include <drm/drm_print.h>
 
 #include "intel_display_types.h"
+#include "intel_ddi.h"
 #include "intel_dp.h"
 #include "intel_hdcp.h"
 
@@ -619,6 +621,65 @@ static const struct intel_hdcp_shim intel_dp_hdcp_shim = {
 	.protocol = HDCP_PROTOCOL_DP,
 };
 
+static int
+intel_dp_mst_hdcp_toggle_signalling(struct intel_digital_port *dig_port,
+				    enum transcoder cpu_transcoder,
+				    bool enable)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	int ret;
+
+	if (!enable)
+		usleep_range(6, 60); /* Bspec says >= 6us */
+
+	ret = intel_ddi_toggle_hdcp_signalling(&dig_port->base,
+					       cpu_transcoder, enable);
+	if (ret)
+		drm_dbg_kms(&i915->drm, "%s HDCP signalling failed (%d)\n",
+			      enable ? "Enable" : "Disable", ret);
+	return ret;
+}
+
+static
+bool intel_dp_mst_hdcp_check_link(struct intel_digital_port *dig_port,
+				  struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+	struct intel_dp *intel_dp = &dig_port->dp;
+	struct drm_dp_query_stream_enc_status_ack_reply reply;
+	int ret;
+
+	if (!intel_dp_hdcp_check_link(dig_port, connector))
+		return false;
+
+	ret = drm_dp_send_query_stream_enc_status(&intel_dp->mst_mgr,
+						  connector->port, &reply);
+	if (ret) {
+		drm_dbg_kms(&i915->drm,
+			    "[CONNECTOR:%d:%s] failed QSES ret=%d\n",
+			    connector->base.base.id, connector->base.name, ret);
+		return false;
+	}
+
+	return reply.auth_completed && reply.encryption_enabled;
+}
+
+static const struct intel_hdcp_shim intel_dp_mst_hdcp_shim = {
+	.write_an_aksv = intel_dp_hdcp_write_an_aksv,
+	.read_bksv = intel_dp_hdcp_read_bksv,
+	.read_bstatus = intel_dp_hdcp_read_bstatus,
+	.repeater_present = intel_dp_hdcp_repeater_present,
+	.read_ri_prime = intel_dp_hdcp_read_ri_prime,
+	.read_ksv_ready = intel_dp_hdcp_read_ksv_ready,
+	.read_ksv_fifo = intel_dp_hdcp_read_ksv_fifo,
+	.read_v_prime_part = intel_dp_hdcp_read_v_prime_part,
+	.toggle_signalling = intel_dp_mst_hdcp_toggle_signalling,
+	.check_link = intel_dp_mst_hdcp_check_link,
+	.hdcp_capable = intel_dp_hdcp_capable,
+
+	.protocol = HDCP_PROTOCOL_DP,
+};
+
 int intel_dp_init_hdcp(struct intel_digital_port *dig_port,
 		       struct intel_connector *intel_connector)
 {
@@ -631,7 +692,10 @@ int intel_dp_init_hdcp(struct intel_digital_port *dig_port,
 	if (!is_hdcp_supported(dev_priv, port))
 		return 0;
 
-	if (!intel_dp_is_edp(intel_dp))
+	if (intel_connector->mst_port)
+		return intel_hdcp_init(intel_connector, port,
+				       &intel_dp_mst_hdcp_shim);
+	else if (!intel_dp_is_edp(intel_dp))
 		return intel_hdcp_init(intel_connector, port,
 				       &intel_dp_hdcp_shim);
 
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index b97b2918d802..b6424bf5d544 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -37,6 +37,7 @@
 #include "intel_dp.h"
 #include "intel_dp_mst.h"
 #include "intel_dpio_phy.h"
+#include "intel_hdcp.h"
 
 static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder,
 					    struct intel_crtc_state *crtc_state,
@@ -352,6 +353,8 @@ static void intel_mst_disable_dp(struct intel_atomic_state *state,
 	drm_dbg_kms(&i915->drm, "active links %d\n",
 		    intel_dp->active_mst_links);
 
+	intel_hdcp_disable(intel_mst->connector);
+
 	drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, connector->port);
 
 	ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
@@ -556,6 +559,13 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state,
 
 	if (pipe_config->has_audio)
 		intel_audio_codec_enable(encoder, pipe_config, conn_state);
+
+	/* Enable hdcp if it's desired */
+	if (conn_state->content_protection ==
+	    DRM_MODE_CONTENT_PROTECTION_DESIRED)
+		intel_hdcp_enable(to_intel_connector(conn_state->connector),
+				  pipe_config->cpu_transcoder,
+				  (u8)conn_state->hdcp_content_type);
 }
 
 static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder,
@@ -799,6 +809,14 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
 	intel_attach_force_audio_property(connector);
 	intel_attach_broadcast_rgb_property(connector);
 
+
+	/* TODO: Figure out how to make HDCP work on GEN12+ */
+	if (INTEL_GEN(dev_priv) < 12) {
+		ret = intel_dp_init_hdcp(dig_port, intel_connector);
+		if (ret)
+			DRM_DEBUG_KMS("HDCP init failed, skipping.\n");
+	}
+
 	/*
 	 * Reuse the prop from the SST connector because we're
 	 * not allowed to create new props after device registration.
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index cd0b24a2ee66..5492076d1ae0 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -2050,7 +2050,7 @@ int intel_hdcp_init(struct intel_connector *connector,
 	if (!shim)
 		return -EINVAL;
 
-	if (is_hdcp2_supported(dev_priv))
+	if (is_hdcp2_supported(dev_priv) && !connector->mst_port)
 		intel_hdcp2_init(connector, port, shim);
 
 	ret =