diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c
index 3fcd408e9103250933044ff3721de622c7d5247c..a46cb20596fe8de5616f6f1d8937b8ada5f00af5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c
@@ -467,6 +467,17 @@ void mpc1_cursor_lock(struct mpc *mpc, int opp_id, bool lock)
 	REG_SET(CUR[opp_id], 0, CUR_VUPDATE_LOCK_SET, lock ? 1 : 0);
 }
 
+unsigned int mpc1_get_mpc_out_mux(struct mpc *mpc, int opp_id)
+{
+	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
+	uint32_t val;
+
+	if (opp_id < MAX_OPP && REG(MUX[opp_id]))
+		REG_GET(MUX[opp_id], MPC_OUT_MUX, &val);
+
+	return val;
+}
+
 static const struct mpc_funcs dcn10_mpc_funcs = {
 	.read_mpcc_state = mpc1_read_mpcc_state,
 	.insert_plane = mpc1_insert_plane,
@@ -483,6 +494,7 @@ static const struct mpc_funcs dcn10_mpc_funcs = {
 	.set_denorm_clamp = NULL,
 	.set_output_csc = NULL,
 	.set_output_gamma = NULL,
+	.get_mpc_out_mux = mpc1_get_mpc_out_mux,
 };
 
 void dcn10_mpc_construct(struct dcn10_mpc *mpc10,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.h
index 66a4719c22a0c15a4fe4f2c9696ae16af5fe29d6..dbfffc6383dcbc71784f72412f696daa48e6376d 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.h
@@ -200,4 +200,5 @@ void mpc1_read_mpcc_state(
 
 void mpc1_cursor_lock(struct mpc *mpc, int opp_id, bool lock);
 
+unsigned int mpc1_get_mpc_out_mux(struct mpc *mpc, int opp_id);
 #endif
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_mpc.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_mpc.c
index 99cc095dc33c7e49777710e137c535d5cf088d9b..6a99fdd55e8c154c835cb7fe4a86c6f6d6d52721 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_mpc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_mpc.c
@@ -556,6 +556,7 @@ const struct mpc_funcs dcn20_mpc_funcs = {
 	.set_ocsc_default = mpc2_set_ocsc_default,
 	.set_output_gamma = mpc2_set_output_gamma,
 	.power_on_mpc_mem_pwr = mpc20_power_on_ogam_lut,
+	.get_mpc_out_mux = mpc1_get_mpc_out_mux,
 };
 
 void dcn20_mpc_construct(struct dcn20_mpc *mpc20,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c
index d7d053fc6e91e7edb04590e3c20f1ba038c3602f..3e6f76096119c8cbe2e1fc9709b9a20bfc13e2a5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c
@@ -1428,6 +1428,7 @@ const struct mpc_funcs dcn30_mpc_funcs = {
 	.program_3dlut = mpc3_program_3dlut,
 	.release_rmu = mpcc3_release_rmu,
 	.power_on_mpc_mem_pwr = mpc20_power_on_ogam_lut,
+	.get_mpc_out_mux = mpc1_get_mpc_out_mux,
 
 };
 
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h b/drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h
index 879f502ae5303e8dedcf68f5b308ab433f3b938e..75c77ad9cbfee89200c161983d3b76e27cb72951 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h
@@ -359,6 +359,10 @@ struct mpc_funcs {
 
 	int (*release_rmu)(struct mpc *mpc, int mpcc_id);
 
+	unsigned int (*get_mpc_out_mux)(
+			struct mpc *mpc,
+			int opp_id);
+
 };
 
 #endif