drm/amd/display: Add MPC 3DLUT resource management

[Why & How]
Number of 3DLUT's in MPC are not equal to number of pipes.
Resource management is required.
Activate on FPGA entire tm solution  which includes
the following :hdr multiplier, shaper, 3dlut.
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Gary Kattan <Gary.Kattan@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_surface.c

@@ -60,7 +60,6 @@ static void construct(struct dc_context *ctx, struct dc_plane_state *plane_state
 	plane_state->lut3d_func = dc_create_3dlut_func();
 	if (plane_state->lut3d_func != NULL) {
 		plane_state->lut3d_func->ctx = ctx;
-		plane_state->lut3d_func->initialized = false;
 	}
 	plane_state->blend_tf = dc_create_transfer_func();
 	if (plane_state->blend_tf != NULL) {
@@ -279,7 +278,7 @@ struct dc_3dlut *dc_create_3dlut_func(void)
 		goto alloc_fail;
 
 	kref_init(&lut->refcount);
-	lut->initialized = false;
+	lut->state.raw = 0;
 
 	return lut;
 

drivers/gpu/drm/amd/display/dc/dc.h

@@ -616,12 +616,26 @@ struct dc_transfer_func {
 
 #if defined(CONFIG_DRM_AMD_DC_DCN2_0)
 
+union dc_3dlut_state {
+	struct {
+		uint32_t initialized:1;		/*if 3dlut is went through color module for initialization */
+		uint32_t rmu_idx_valid:1;	/*if mux settings are valid*/
+		uint32_t rmu_mux_num:3;		/*index of mux to use*/
+		uint32_t mpc_rmu0_mux:4;	/*select mpcc on mux, one of the following : mpcc0, mpcc1, mpcc2, mpcc3*/
+		uint32_t mpc_rmu1_mux:4;
+		uint32_t mpc_rmu2_mux:4;
+		uint32_t reserved:15;
+	} bits;
+	uint32_t raw;
+};
+
 
 struct dc_3dlut {
 	struct kref refcount;
 	struct tetrahedral_params lut_3d;
 	uint32_t hdr_multiplier;
-	bool initialized;
+	bool initialized; /*remove after diag fix*/
+	union dc_3dlut_state state;
 	struct dc_context *ctx;
 };
 #endif

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

@@ -952,14 +952,14 @@ static bool dcn20_set_shaper_3dlut(
 
 	result = dpp_base->funcs->dpp_program_shaper_lut(dpp_base, shaper_lut);
 	if (plane_state->lut3d_func &&
-		plane_state->lut3d_func->initialized == true)
+		plane_state->lut3d_func->state.bits.initialized == 1)
 		result = dpp_base->funcs->dpp_program_3dlut(dpp_base,
 								&plane_state->lut3d_func->lut_3d);
 	else
 		result = dpp_base->funcs->dpp_program_3dlut(dpp_base, NULL);
 
 	if (plane_state->lut3d_func &&
-		plane_state->lut3d_func->initialized == true &&
+		plane_state->lut3d_func->state.bits.initialized == 1 &&
 		plane_state->lut3d_func->hdr_multiplier != 0)
 		dpp_base->funcs->dpp_set_hdr_multiplier(dpp_base,
 				plane_state->lut3d_func->hdr_multiplier);