drm/amd/display: Integrating MPC pseudocode

Integrating MPC pseudocode to support new blending cases
with secondary MPCC list.
This includes a design change to MPC data structures and
interfaces.
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -579,8 +579,6 @@ enum dc_timing_standard {
 	TIMING_STANDARD_MAX
 };
 
-
-
 enum dc_color_depth {
 	COLOR_DEPTH_UNDEFINED,
 	COLOR_DEPTH_666,

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -573,28 +573,25 @@ static void plane_atomic_disconnect(struct dc *dc, struct pipe_ctx *pipe_ctx)
 	int fe_idx = pipe_ctx->pipe_idx;
 	struct hubp *hubp = dc->res_pool->hubps[fe_idx];
 	struct mpc *mpc = dc->res_pool->mpc;
-	int opp_id, z_idx;
-	int mpcc_id = -1;
+	int opp_id;
+	struct mpc_tree *mpc_tree_params;
+	struct mpcc *mpcc_to_remove = NULL;
 
 	/* look at tree rather than mi here to know if we already reset */
 	for (opp_id = 0; opp_id < dc->res_pool->pipe_count; opp_id++) {
 		struct output_pixel_processor *opp = dc->res_pool->opps[opp_id];
 
-		for (z_idx = 0; z_idx < opp->mpc_tree.num_pipes; z_idx++) {
-			if (opp->mpc_tree.dpp[z_idx] == fe_idx) {
-				mpcc_id = opp->mpc_tree.mpcc[z_idx];
-				break;
-			}
-		}
-		if (mpcc_id != -1)
+		mpc_tree_params = &(opp->mpc_tree_params);
+		mpcc_to_remove = mpc->funcs->get_mpcc_for_dpp(mpc_tree_params, fe_idx);
+		if (mpcc_to_remove != NULL)
 			break;
 	}
+
 	/*Already reset*/
 	if (opp_id == dc->res_pool->pipe_count)
 		return;
 
-	mpc->funcs->remove(mpc, &(dc->res_pool->opps[opp_id]->mpc_tree),
-					dc->res_pool->opps[opp_id]->inst, fe_idx);
+	mpc->funcs->remove_mpcc(mpc, mpc_tree_params, mpcc_to_remove);
 
 	if (hubp->funcs->hubp_disconnect)
 		hubp->funcs->hubp_disconnect(hubp);
@@ -652,7 +649,7 @@ static void plane_atomic_disable(struct dc *dc, struct pipe_ctx *pipe_ctx)
 	REG_UPDATE(DPP_CONTROL[fe_idx],
 			DPP_CLOCK_ENABLE, 0);
 
-	if (opp_id != 0xf && dc->res_pool->opps[opp_id]->mpc_tree.num_pipes == 0)
+	if (opp_id != 0xf && dc->res_pool->opps[opp_id]->mpc_tree_params.opp_list == NULL)
 		REG_UPDATE(OPP_PIPE_CONTROL[opp_id],
 				OPP_PIPE_CLOCK_EN, 0);
 
@@ -677,7 +674,7 @@ static void dcn10_disable_plane(struct dc *dc, struct pipe_ctx *pipe_ctx)
 
 static void dcn10_init_hw(struct dc *dc)
 {
-	int i;
+	int i, opp_id;
 	struct abm *abm = dc->res_pool->abm;
 	struct dmcu *dmcu = dc->res_pool->dmcu;
 	struct dce_hwseq *hws = dc->hwseq;
@@ -740,17 +737,19 @@ static void dcn10_init_hw(struct dc *dc)
 		}
 	}
 
+	/* Initialize MPC tree based on HW values */
+	for (opp_id = 0; opp_id < dc->res_pool->pipe_count; opp_id++) {
+		struct output_pixel_processor *opp = dc->res_pool->opps[opp_id];
+		struct mpc_tree *mpc_tree_params = &(opp->mpc_tree_params);
+
+		dc->res_pool->mpc->funcs->init_mpcc_list_from_hw(dc->res_pool->mpc, mpc_tree_params);
+	}
+
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
 		struct timing_generator *tg = dc->res_pool->timing_generators[i];
 		struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
-		struct output_pixel_processor *opp = dc->res_pool->opps[i];
-		struct mpc_tree_cfg *mpc_tree = &opp->mpc_tree;
 		struct hubp *hubp = dc->res_pool->hubps[i];
 
-		mpc_tree->dpp[0] = i;
-		mpc_tree->mpcc[0] = i;
-		mpc_tree->num_pipes = 1;
-
 		pipe_ctx->stream_res.tg = tg;
 		pipe_ctx->pipe_idx = i;
 
@@ -1694,38 +1693,6 @@ static void program_csc_matrix(struct pipe_ctx *pipe_ctx,
 	}
 }
 
-static void set_mpc_output_csc(struct dc *dc,
-		struct pipe_ctx *pipe_ctx,
-		enum dc_color_space colorspace,
-		uint16_t *matrix,
-		int opp_id)
-{
-	struct mpc *mpc = dc->res_pool->mpc;
-	int i;
-	struct out_csc_color_matrix tbl_entry;
-	enum mpc_output_csc_mode ocsc_mode = MPC_OUTPUT_CSC_COEF_A;
-
-
-	if (pipe_ctx->stream->csc_color_matrix.enable_adjustment == true) {
-		//uint16_t matrix[12];
-		for (i = 0; i < 12; i++)
-			tbl_entry.regval[i] = matrix[i];
-		tbl_entry.color_space = colorspace;
-
-		if (mpc->funcs->set_output_csc != NULL)
-			mpc->funcs->set_output_csc(mpc,
-					opp_id,
-					&tbl_entry,
-					ocsc_mode);
-	} else {
-		if (mpc->funcs->set_ocsc_default != NULL)
-			mpc->funcs->set_ocsc_default(mpc,
-					opp_id,
-					colorspace,
-					ocsc_mode);
-	}
-}
-
 static void program_output_csc(struct dc *dc,
 		struct pipe_ctx *pipe_ctx,
 		enum dc_color_space colorspace,
@@ -1736,13 +1703,6 @@ static void program_output_csc(struct dc *dc,
 		program_csc_matrix(pipe_ctx,
 				colorspace,
 				matrix);
-	else
-		set_mpc_output_csc(dc,
-			pipe_ctx,
-			colorspace,
-			matrix,
-			opp_id);
-
 }
 
 static bool is_lower_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
@@ -1914,35 +1874,73 @@ static void update_dpp(struct dpp *dpp, struct dc_plane_state *plane_state)
 
 static void update_mpcc(struct dc *dc, struct pipe_ctx *pipe_ctx)
 {
-	struct mpcc_cfg mpcc_cfg = {0};
 	struct hubp *hubp = pipe_ctx->plane_res.hubp;
-	struct pipe_ctx *top_pipe;
-	bool per_pixel_alpha =
-			pipe_ctx->plane_state->per_pixel_alpha && pipe_ctx->bottom_pipe;
+	struct mpcc_blnd_cfg blnd_cfg;
+	bool per_pixel_alpha = pipe_ctx->plane_state->per_pixel_alpha && pipe_ctx->bottom_pipe;
+	int mpcc_id;
+	struct mpcc *new_mpcc;
+	struct mpc *mpc = dc->res_pool->mpc;
+	struct mpc_tree *mpc_tree_params = &(pipe_ctx->stream_res.opp->mpc_tree_params);
 
 	/* TODO: proper fix once fpga works */
 
-	mpcc_cfg.dpp_id = hubp->inst;
-	mpcc_cfg.opp_id = pipe_ctx->stream_res.opp->inst;
-	mpcc_cfg.tree_cfg = &(pipe_ctx->stream_res.opp->mpc_tree);
-	for (top_pipe = pipe_ctx->top_pipe; top_pipe; top_pipe = top_pipe->top_pipe)
-		mpcc_cfg.z_index++;
 	if (dc->debug.surface_visual_confirm)
 		dcn10_get_surface_visual_confirm_color(
-				pipe_ctx, &mpcc_cfg.black_color);
+				pipe_ctx, &blnd_cfg.black_color);
 	else
 		color_space_to_black_color(
 			dc, pipe_ctx->stream->output_color_space,
-			&mpcc_cfg.black_color);
-	mpcc_cfg.per_pixel_alpha = per_pixel_alpha;
+			&blnd_cfg.black_color);
+
+	if (per_pixel_alpha)
+		blnd_cfg.alpha_mode = MPCC_ALPHA_BLEND_MODE_PER_PIXEL_ALPHA;
+	else
+		blnd_cfg.alpha_mode = MPCC_ALPHA_BLEND_MODE_GLOBAL_ALPHA;
+
+	blnd_cfg.overlap_only = false;
+	blnd_cfg.global_alpha = 0xff;
+	blnd_cfg.global_gain = 0xff;
+
 	/* DCN1.0 has output CM before MPC which seems to screw with
 	 * pre-multiplied alpha.
 	 */
-	mpcc_cfg.pre_multiplied_alpha = is_rgb_cspace(
+	blnd_cfg.pre_multiplied_alpha = is_rgb_cspace(
 			pipe_ctx->stream->output_color_space)
 					&& per_pixel_alpha;
-	hubp->mpcc_id = dc->res_pool->mpc->funcs->add(dc->res_pool->mpc, &mpcc_cfg);
-	hubp->opp_id = mpcc_cfg.opp_id;
+
+	/*
+	 * TODO: remove hack
+	 * Note: currently there is a bug in init_hw such that
+	 * on resume from hibernate, BIOS sets up MPCC0, and
+	 * we do mpcc_remove but the mpcc cannot go to idle
+	 * after remove. This cause us to pick mpcc1 here,
+	 * which causes a pstate hang for yet unknown reason.
+	 */
+	mpcc_id = hubp->inst;
+
+	/* check if this MPCC is already being used */
+	new_mpcc = mpc->funcs->get_mpcc_for_dpp(mpc_tree_params, mpcc_id);
+	/* remove MPCC if being used */
+	if (new_mpcc != NULL)
+		mpc->funcs->remove_mpcc(mpc, mpc_tree_params, new_mpcc);
+
+	if (dc->debug.sanity_checks)
+		mpc->funcs->assert_mpcc_idle_before_connect(
+				dc->res_pool->mpc, mpcc_id);
+
+	/* Call MPC to insert new plane */
+	new_mpcc = mpc->funcs->insert_plane(dc->res_pool->mpc,
+			mpc_tree_params,
+			&blnd_cfg,
+			NULL,
+			NULL,
+			hubp->inst,
+			mpcc_id);
+
+	ASSERT(new_mpcc != NULL);
+
+	hubp->opp_id = pipe_ctx->stream_res.opp->inst;
+	hubp->mpcc_id = mpcc_id;
 }
 
 static void update_scaler(struct pipe_ctx *pipe_ctx)

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c

@@ -25,8 +25,6 @@
 
 #include "reg_helper.h"
 #include "dcn10_mpc.h"
-#include "dc.h"
-#include "mem_input.h"
 
 #define REG(reg)\
 	mpc10->mpc_regs->reg
@@ -38,17 +36,13 @@
 #define FN(reg_name, field_name) \
 	mpc10->mpc_shift->field_name, mpc10->mpc_mask->field_name
 
-#define MODE_TOP_ONLY 1
-#define MODE_BLEND 3
-#define BLND_PP_ALPHA 0
-#define BLND_GLOBAL_ALPHA 2
 
-
-static void mpc10_set_bg_color(
-		struct dcn10_mpc *mpc10,
+void mpc1_set_bg_color(struct mpc *mpc,
 		struct tg_color *bg_color,
-		int id)
+		int mpcc_id)
 {
+	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
+
 	/* mpc color is 12 bit.  tg_color is 10 bit */
 	/* todo: might want to use 16 bit to represent color and have each
 	 * hw block translate to correct color depth.
@@ -57,15 +51,47 @@ static void mpc10_set_bg_color(
 	uint32_t bg_g_y = bg_color->color_g_y << 2;
 	uint32_t bg_b_cb = bg_color->color_b_cb << 2;
 
-	REG_SET(MPCC_BG_R_CR[id], 0,
+	REG_SET(MPCC_BG_R_CR[mpcc_id], 0,
 			MPCC_BG_R_CR, bg_r_cr);
-	REG_SET(MPCC_BG_G_Y[id], 0,
+	REG_SET(MPCC_BG_G_Y[mpcc_id], 0,
 			MPCC_BG_G_Y, bg_g_y);
-	REG_SET(MPCC_BG_B_CB[id], 0,
+	REG_SET(MPCC_BG_B_CB[mpcc_id], 0,
 			MPCC_BG_B_CB, bg_b_cb);
 }
 
-void mpc10_assert_idle_mpcc(struct mpc *mpc, int id)
+static void mpc1_update_blending(
+	struct mpc *mpc,
+	struct mpcc_blnd_cfg *blnd_cfg,
+	int mpcc_id)
+{
+	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
+
+	REG_UPDATE_5(MPCC_CONTROL[mpcc_id],
+			MPCC_ALPHA_BLND_MODE,		blnd_cfg->alpha_mode,
+			MPCC_ALPHA_MULTIPLIED_MODE,	blnd_cfg->pre_multiplied_alpha,
+			MPCC_BLND_ACTIVE_OVERLAP_ONLY,	blnd_cfg->overlap_only,
+			MPCC_GLOBAL_ALPHA,		blnd_cfg->global_alpha,
+			MPCC_GLOBAL_GAIN,		blnd_cfg->global_gain);
+
+	mpc1_set_bg_color(mpc, &blnd_cfg->black_color, mpcc_id);
+}
+
+void mpc1_update_stereo_mix(
+	struct mpc *mpc,
+	struct mpcc_sm_cfg *sm_cfg,
+	int mpcc_id)
+{
+	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
+
+	REG_UPDATE_6(MPCC_SM_CONTROL[mpcc_id],
+			MPCC_SM_EN,			sm_cfg->enable,
+			MPCC_SM_MODE,			sm_cfg->sm_mode,
+			MPCC_SM_FRAME_ALT,		sm_cfg->frame_alt,
+			MPCC_SM_FIELD_ALT,		sm_cfg->field_alt,
+			MPCC_SM_FORCE_NEXT_FRAME_POL,	sm_cfg->force_next_frame_porlarity,
+			MPCC_SM_FORCE_NEXT_TOP_POL,	sm_cfg->force_next_field_polarity);
+}
+void mpc1_assert_idle_mpcc(struct mpc *mpc, int id)
 {
 	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
 
@@ -75,39 +101,62 @@ void mpc10_assert_idle_mpcc(struct mpc *mpc, int id)
 			1, 100000);
 }
 
-static int mpc10_get_idle_mpcc_id(struct dcn10_mpc *mpc10)
+static int mpc1_get_opp_id(struct mpc *mpc, int mpcc_id)
 {
-	int i;
-	int last_free_mpcc_id = -1;
+	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
+	unsigned int opp_id = 0xF;
 
-	for (i = 0; i < mpc10->num_mpcc; i++) {
-		uint32_t is_idle = 0;
+	REG_GET(MPCC_OPP_ID[mpcc_id], MPCC_OPP_ID, &opp_id);
 
-		if (mpc10->mpcc_in_use_mask & 1 << i)
-			continue;
+	return opp_id;
+}
+
+struct mpcc *mpc1_get_mpcc(struct mpc *mpc, int mpcc_id)
+{
+	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
+
+	ASSERT(mpcc_id < mpc10->num_mpcc);
+	return &(mpc->mpcc_array[mpcc_id]);
+}
+
+struct mpcc *mpc1_get_mpcc_for_dpp(struct mpc_tree *tree, int dpp_id)
+{
+	struct mpcc *tmp_mpcc = tree->opp_list;
 
-		last_free_mpcc_id = i;
-		REG_GET(MPCC_STATUS[i], MPCC_IDLE, &is_idle);
-		if (is_idle)
-			return i;
+	while (tmp_mpcc != NULL) {
+		if (tmp_mpcc->dpp_id == dpp_id)
+			return tmp_mpcc;
+		tmp_mpcc = tmp_mpcc->mpcc_bot;
 	}
+	return NULL;
+}
 
-	/* This assert should never trigger, we have mpcc leak if it does */
-	ASSERT(last_free_mpcc_id != -1);
+bool mpc1_is_mpcc_idle(struct mpc *mpc, int mpcc_id)
+{
+	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
+	unsigned int top_sel;
+	unsigned int opp_id;
+	unsigned int idle;
 
-	mpc10_assert_idle_mpcc(&mpc10->base, last_free_mpcc_id);
-	return last_free_mpcc_id;
+	REG_GET(MPCC_TOP_SEL[mpcc_id], MPCC_TOP_SEL, &top_sel);
+	REG_GET(MPCC_OPP_ID[mpcc_id],  MPCC_OPP_ID, &opp_id);
+	REG_GET(MPCC_STATUS[mpcc_id],  MPCC_IDLE,   &idle);
+	if (top_sel == 0xf && opp_id == 0xf && idle)
+		return true;
+	else
+		return false;
 }
 
-static void mpc10_assert_mpcc_idle_before_connect(struct dcn10_mpc *mpc10, int id)
+void mpc1_assert_mpcc_idle_before_connect(struct mpc *mpc, int mpcc_id)
 {
+	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
 	unsigned int top_sel, mpc_busy, mpc_idle;
 
-	REG_GET(MPCC_TOP_SEL[id],
+	REG_GET(MPCC_TOP_SEL[mpcc_id],
 			MPCC_TOP_SEL, &top_sel);
 
 	if (top_sel == 0xf) {
-		REG_GET_2(MPCC_STATUS[id],
+		REG_GET_2(MPCC_STATUS[mpcc_id],
 				MPCC_BUSY, &mpc_busy,
 				MPCC_IDLE, &mpc_idle);
 
@@ -116,241 +165,258 @@ static void mpc10_assert_mpcc_idle_before_connect(struct dcn10_mpc *mpc10, int i
 	}
 }
 
-void mpc10_mpcc_remove(
+/*
+ * Insert DPP into MPC tree based on specified blending position.
+ * Only used for planes that are part of blending chain for OPP output
+ *
+ * Parameters:
+ * [in/out] mpc		- MPC context.
+ * [in/out] tree	- MPC tree structure that plane will be added to.
+ * [in]	blnd_cfg	- MPCC blending configuration for the new blending layer.
+ * [in]	sm_cfg		- MPCC stereo mix configuration for the new blending layer.
+ *			  stereo mix must disable for the very bottom layer of the tree config.
+ * [in]	insert_above_mpcc - Insert new plane above this MPCC.  If NULL, insert as bottom plane.
+ * [in]	dpp_id		- DPP instance for the plane to be added.
+ * [in]	mpcc_id		- The MPCC physical instance to use for blending.
+ *
+ * Return:  struct mpcc* - MPCC that was added.
+ */
+struct mpcc *mpc1_insert_plane(
 	struct mpc *mpc,
-		struct mpc_tree_cfg *tree_cfg,
-		int opp_id,
-		int dpp_id)
+	struct mpc_tree *tree,
+	struct mpcc_blnd_cfg *blnd_cfg,
+	struct mpcc_sm_cfg *sm_cfg,
+	struct mpcc *insert_above_mpcc,
+	int dpp_id,
+	int mpcc_id)
 {
 	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
-	int mpcc_id, z_idx;
+	struct mpcc *new_mpcc = NULL;
 
-	/* find z_idx for the dpp to be removed */
-	for (z_idx = 0; z_idx < tree_cfg->num_pipes; z_idx++)
-		if (tree_cfg->dpp[z_idx] == dpp_id)
-			break;
+	/* sanity check parameters */
+	ASSERT(mpcc_id < mpc10->num_mpcc);
+	ASSERT(!(mpc10->mpcc_in_use_mask & 1 << mpcc_id));
 
-	if (z_idx == tree_cfg->num_pipes) {
-		/* In case of resume from S3/S4, remove mpcc from bios left over */
-		REG_SET(MPCC_OPP_ID[dpp_id], 0,
-				MPCC_OPP_ID, 0xf);
-		REG_SET(MPCC_TOP_SEL[dpp_id], 0,
-				MPCC_TOP_SEL, 0xf);
-		REG_SET(MPCC_BOT_SEL[dpp_id], 0,
-				MPCC_BOT_SEL, 0xf);
-		return;
+	if (insert_above_mpcc) {
+		/* check insert_above_mpcc exist in tree->opp_list */
+		struct mpcc *temp_mpcc = tree->opp_list;
+
+		while (temp_mpcc && temp_mpcc->mpcc_bot != insert_above_mpcc)
+			temp_mpcc = temp_mpcc->mpcc_bot;
+		if (temp_mpcc == NULL)
+			return NULL;
 	}
 
-	mpcc_id = tree_cfg->mpcc[z_idx];
+	/* Get and update MPCC struct parameters */
+	new_mpcc = mpc1_get_mpcc(mpc, mpcc_id);
+	new_mpcc->dpp_id = dpp_id;
 
-	REG_SET(MPCC_OPP_ID[mpcc_id], 0,
-			MPCC_OPP_ID, 0xf);
-	REG_SET(MPCC_TOP_SEL[mpcc_id], 0,
-			MPCC_TOP_SEL, 0xf);
-	REG_SET(MPCC_BOT_SEL[mpcc_id], 0,
-			MPCC_BOT_SEL, 0xf);
+	/* program mux and MPCC_MODE */
+	if (insert_above_mpcc) {
+		new_mpcc->mpcc_bot = insert_above_mpcc;
+		REG_SET(MPCC_BOT_SEL[mpcc_id], 0, MPCC_BOT_SEL, insert_above_mpcc->mpcc_id);
+		REG_UPDATE(MPCC_CONTROL[mpcc_id], MPCC_MODE, MPCC_BLEND_MODE_TOP_BOT_BLENDING);
+	} else {
+		new_mpcc->mpcc_bot = NULL;
+		REG_SET(MPCC_BOT_SEL[mpcc_id], 0, MPCC_BOT_SEL, 0xf);
+		REG_UPDATE(MPCC_CONTROL[mpcc_id], MPCC_MODE, MPCC_BLEND_MODE_TOP_LAYER_PASSTHROUGH);
+	}
+	REG_SET(MPCC_TOP_SEL[mpcc_id], 0, MPCC_TOP_SEL, dpp_id);
+	REG_SET(MPCC_OPP_ID[mpcc_id], 0, MPCC_OPP_ID, tree->opp_id);
+
+	/* update mpc tree mux setting */
+	if (tree->opp_list == insert_above_mpcc) {
+		/* insert the toppest mpcc */
+		tree->opp_list = new_mpcc;
+		REG_SET(MUX[tree->opp_id], 0, MPC_OUT_MUX, mpcc_id);
+	} else {
+		/* find insert position */
+		struct mpcc *temp_mpcc = tree->opp_list;
+
+		while (temp_mpcc && temp_mpcc->mpcc_bot != insert_above_mpcc)
+			temp_mpcc = temp_mpcc->mpcc_bot;
+		if (temp_mpcc && temp_mpcc->mpcc_bot == insert_above_mpcc) {
+			REG_SET(MPCC_BOT_SEL[temp_mpcc->mpcc_id], 0, MPCC_BOT_SEL, mpcc_id);
+			temp_mpcc->mpcc_bot = new_mpcc;
+			if (!insert_above_mpcc)
+				REG_UPDATE(MPCC_CONTROL[temp_mpcc->mpcc_id],
+						MPCC_MODE, MPCC_BLEND_MODE_TOP_BOT_BLENDING);
+		}
+	}
 
-	if (z_idx > 0) {
-		int top_mpcc_id = tree_cfg->mpcc[z_idx - 1];
+	/* update the blending configuration */
+	new_mpcc->blnd_cfg = *blnd_cfg;
+	mpc->funcs->update_blending(mpc, &new_mpcc->blnd_cfg, mpcc_id);
 
-		if (z_idx + 1 < tree_cfg->num_pipes)
-			/* mpcc to be removed is in the middle of the tree */
-			REG_SET(MPCC_BOT_SEL[top_mpcc_id], 0,
-					MPCC_BOT_SEL, tree_cfg->mpcc[z_idx + 1]);
-		else {
-			/* mpcc to be removed is at the bottom of the tree */
-			REG_SET(MPCC_BOT_SEL[top_mpcc_id], 0,
-					MPCC_BOT_SEL, 0xf);
-			REG_UPDATE(MPCC_CONTROL[top_mpcc_id],
-					MPCC_MODE, MODE_TOP_ONLY);
+	/* update the stereo mix settings, if provided */
+	if (sm_cfg != NULL) {
+		new_mpcc->sm_cfg = *sm_cfg;
+		mpc1_update_stereo_mix(mpc, sm_cfg, mpcc_id);
 	}
-	} else if (tree_cfg->num_pipes > 1)
-		/* mpcc to be removed is at the top of the tree */
-		REG_SET(MUX[opp_id], 0,
-				MPC_OUT_MUX, tree_cfg->mpcc[z_idx + 1]);
-	else
-		/* mpcc to be removed is the only one in the tree */
-		REG_SET(MUX[opp_id], 0, MPC_OUT_MUX, 0xf);
 
-	/* mark this mpcc as not in use */
-	mpc10->mpcc_in_use_mask &= ~(1 << mpcc_id);
-	tree_cfg->num_pipes--;
-	for (; z_idx < tree_cfg->num_pipes; z_idx++) {
-		tree_cfg->dpp[z_idx] = tree_cfg->dpp[z_idx + 1];
-		tree_cfg->mpcc[z_idx] = tree_cfg->mpcc[z_idx + 1];
-	}
-	tree_cfg->dpp[tree_cfg->num_pipes] = 0xdeadbeef;
-	tree_cfg->mpcc[tree_cfg->num_pipes] = 0xdeadbeef;
+	/* mark this mpcc as in use */
+	mpc10->mpcc_in_use_mask |= 1 << mpcc_id;
+
+	return new_mpcc;
 }
 
-static void mpc10_add_to_tree_cfg(
+/*
+ * Remove a specified MPCC from the MPC tree.
+ *
+ * Parameters:
+ * [in/out] mpc		- MPC context.
+ * [in/out] tree	- MPC tree structure that plane will be removed from.
+ * [in/out] mpcc	- MPCC to be removed from tree.
+ *
+ * Return:  void
+ */
+void mpc1_remove_mpcc(
 	struct mpc *mpc,
-	struct mpcc_cfg *cfg,
-	int mpcc_id)
+	struct mpc_tree *tree,
+	struct mpcc *mpcc_to_remove)
 {
 	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
-	int mpcc_mode = MODE_TOP_ONLY;
-	int position = cfg->z_index;
-	struct mpc_tree_cfg *tree_cfg = cfg->tree_cfg;
-	int alpha_blnd_mode = cfg->per_pixel_alpha ?
-			BLND_PP_ALPHA : BLND_GLOBAL_ALPHA;
-	int z_idx;
-
-	REG_SET(MPCC_OPP_ID[mpcc_id], 0,
-			MPCC_OPP_ID, cfg->opp_id);
-
-	REG_SET(MPCC_TOP_SEL[mpcc_id], 0,
-			MPCC_TOP_SEL, cfg->dpp_id);
-
-	if (position == 0) {
-		/* idle dpp/mpcc is added to the top layer of tree */
-
-		if (tree_cfg->num_pipes > 0) {
-			/* get instance of previous top mpcc */
-			int prev_top_mpcc_id = tree_cfg->mpcc[0];
-
-			REG_SET(MPCC_BOT_SEL[mpcc_id], 0,
-					MPCC_BOT_SEL, prev_top_mpcc_id);
-			mpcc_mode = MODE_BLEND;
+	bool found = false;
+	int mpcc_id = mpcc_to_remove->mpcc_id;
+
+	if (tree->opp_list == mpcc_to_remove) {
+		found = true;
+		/* remove MPCC from top of tree */
+		if (mpcc_to_remove->mpcc_bot) {
+			/* set the next MPCC in list to be the top MPCC */
+			tree->opp_list = mpcc_to_remove->mpcc_bot;
+			REG_SET(MUX[tree->opp_id], 0, MPC_OUT_MUX, tree->opp_list->mpcc_id);
+		} else {
+			/* there are no other MPCC is list */
+			tree->opp_list = NULL;
+			REG_SET(MUX[tree->opp_id], 0, MPC_OUT_MUX, 0xf);
 		}
-
-		/* opp will get new output. from new added mpcc */
-		REG_SET(MUX[cfg->opp_id], 0, MPC_OUT_MUX, mpcc_id);
-
-	} else if (position == tree_cfg->num_pipes) {
-		/* idle dpp/mpcc is added to the bottom layer of tree */
-
-		/* get instance of previous bottom mpcc, set to middle layer */
-		int prev_bot_mpcc_id = tree_cfg->mpcc[tree_cfg->num_pipes - 1];
-
-		REG_SET(MPCC_BOT_SEL[prev_bot_mpcc_id], 0,
-				MPCC_BOT_SEL, mpcc_id);
-		REG_UPDATE(MPCC_CONTROL[prev_bot_mpcc_id],
-				MPCC_MODE, MODE_BLEND);
-
-		/* mpcc_id become new bottom mpcc*/
-		REG_SET(MPCC_BOT_SEL[mpcc_id], 0,
-				MPCC_BOT_SEL, 0xf);
-
 	} else {
-		/* idle dpp/mpcc is added to middle of tree */
-		int above_mpcc_id = tree_cfg->mpcc[position - 1];
-		int below_mpcc_id = tree_cfg->mpcc[position];
-
-		/* mpcc above new mpcc_id has new bottom mux*/
-		REG_SET(MPCC_BOT_SEL[above_mpcc_id], 0,
-				MPCC_BOT_SEL, mpcc_id);
-		REG_UPDATE(MPCC_CONTROL[above_mpcc_id],
-				MPCC_MODE, MODE_BLEND);
-
-		/* mpcc_id bottom mux is from below mpcc*/
-		REG_SET(MPCC_BOT_SEL[mpcc_id], 0,
-				MPCC_BOT_SEL, below_mpcc_id);
-		mpcc_mode = MODE_BLEND;
+		/* find mpcc to remove MPCC list */
+		struct mpcc *temp_mpcc = tree->opp_list;
+
+		while (temp_mpcc && temp_mpcc->mpcc_bot != mpcc_to_remove)
+			temp_mpcc = temp_mpcc->mpcc_bot;
+
+		if (temp_mpcc && temp_mpcc->mpcc_bot == mpcc_to_remove) {
+			found = true;
+			if (mpcc_to_remove->mpcc_bot) {
+				/* remove MPCC in middle of list */
+				REG_SET(MPCC_BOT_SEL[temp_mpcc->mpcc_id], 0,
+						MPCC_BOT_SEL, mpcc_to_remove->mpcc_bot->mpcc_id);
+				temp_mpcc->mpcc_bot = mpcc_to_remove->mpcc_bot;
+			} else {
+				/* remove MPCC from bottom of list */
+				REG_SET(MPCC_BOT_SEL[temp_mpcc->mpcc_id], 0,
+						MPCC_BOT_SEL, 0xf);
+				REG_UPDATE(MPCC_CONTROL[temp_mpcc->mpcc_id],
+						MPCC_MODE, MPCC_BLEND_MODE_TOP_LAYER_PASSTHROUGH);
+			}
+		}
 	}
 
-	REG_SET_4(MPCC_CONTROL[mpcc_id], 0xffffffff,
-		MPCC_MODE, mpcc_mode,
-		MPCC_ALPHA_BLND_MODE, alpha_blnd_mode,
-		MPCC_ALPHA_MULTIPLIED_MODE, cfg->pre_multiplied_alpha,
-		MPCC_BLND_ACTIVE_OVERLAP_ONLY, false);
+	if (found) {
+		/* turn off MPCC mux registers */
+		REG_SET(MPCC_TOP_SEL[mpcc_id], 0, MPCC_TOP_SEL, 0xf);
+		REG_SET(MPCC_BOT_SEL[mpcc_id], 0, MPCC_BOT_SEL, 0xf);
+		REG_SET(MPCC_OPP_ID[mpcc_id],  0, MPCC_OPP_ID,  0xf);
 
-	/* update mpc_tree_cfg with new mpcc */
-	for (z_idx = tree_cfg->num_pipes; z_idx > position; z_idx--) {
-		tree_cfg->dpp[z_idx] = tree_cfg->dpp[z_idx - 1];
-		tree_cfg->mpcc[z_idx] = tree_cfg->mpcc[z_idx - 1];
+		/* mark this mpcc as not in use */
+		mpc10->mpcc_in_use_mask &= ~(1 << mpcc_id);
+		mpcc_to_remove->dpp_id = 0xf;
+		mpcc_to_remove->mpcc_bot = NULL;
+	} else {
+		/* In case of resume from S3/S4, remove mpcc from bios left over */
+		REG_SET(MPCC_TOP_SEL[mpcc_id], 0, MPCC_TOP_SEL, 0xf);
+		REG_SET(MPCC_BOT_SEL[mpcc_id], 0, MPCC_BOT_SEL, 0xf);
+		REG_SET(MPCC_OPP_ID[mpcc_id],  0, MPCC_OPP_ID,  0xf);
 	}
-	tree_cfg->dpp[position] = cfg->dpp_id;
-	tree_cfg->mpcc[position] = mpcc_id;
-	tree_cfg->num_pipes++;
 }
 
-int mpc10_mpcc_add(struct mpc *mpc, struct mpcc_cfg *cfg)
+/*
+ * Reset the MPCC HW status by disconnecting all muxes.
+ *
+ * Parameters:
+ * [in/out] mpc		- MPC context.
+ * [in]     mpcc_id	- The MPCC physical instance to reset.
+ *
+ * Return:  void
+ */
+void mpc1_reset_mpcc(
+	struct mpc *mpc,
+	int mpcc_id)
 {
 	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
-	int mpcc_id, z_idx;
-
-	ASSERT(cfg->z_index < mpc10->num_mpcc);
-
-	/* check in dpp already exists in mpc tree */
-	for (z_idx = 0; z_idx < cfg->tree_cfg->num_pipes; z_idx++)
-		if (cfg->tree_cfg->dpp[z_idx] == cfg->dpp_id)
-			break;
-	if (z_idx == cfg->tree_cfg->num_pipes) {
-		ASSERT(cfg->z_index <= cfg->tree_cfg->num_pipes);
-		mpcc_id = mpc10_get_idle_mpcc_id(mpc10);
-
-		/*
-		 * TODO: remove hack
-		 * Note: currently there is a bug in init_hw such that
-		 * on resume from hibernate, BIOS sets up MPCC0, and
-		 * we do mpcc_remove but the mpcc cannot go to idle
-		 * after remove. This cause us to pick mpcc1 here,
-		 * which causes a pstate hang for yet unknown reason.
-		 */
-		mpcc_id = cfg->dpp_id;
-		/* end hack*/
 
-		ASSERT(!(mpc10->mpcc_in_use_mask & 1 << mpcc_id));
-
-		if (mpc->ctx->dc->debug.sanity_checks)
-			mpc10_assert_mpcc_idle_before_connect(mpc10, mpcc_id);
-	} else {
-		ASSERT(cfg->z_index < cfg->tree_cfg->num_pipes);
-		mpcc_id = cfg->tree_cfg->mpcc[z_idx];
-		mpc10_mpcc_remove(mpc, cfg->tree_cfg, cfg->opp_id, cfg->dpp_id);
-	}
-
-	/* add dpp/mpcc pair to mpc_tree_cfg and update mpcc registers */
-	mpc10_add_to_tree_cfg(mpc, cfg, mpcc_id);
-
-	/* set background color */
-	mpc10_set_bg_color(mpc10, &cfg->black_color, mpcc_id);
-
-	/* mark this mpcc as in use */
-	mpc10->mpcc_in_use_mask |= 1 << mpcc_id;
-
-	return mpcc_id;
+	REG_SET(MPCC_TOP_SEL[mpcc_id], 0, MPCC_TOP_SEL, 0xf);
+	REG_SET(MPCC_BOT_SEL[mpcc_id], 0, MPCC_BOT_SEL, 0xf);
+	REG_SET(MPCC_OPP_ID[mpcc_id],  0, MPCC_OPP_ID,  0xf);
 }
 
-void mpc10_update_blend_mode(
+void mpc1_init_mpcc_list_from_hw(
 	struct mpc *mpc,
-		struct mpcc_cfg *cfg)
+	struct mpc_tree *tree)
 {
 	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
-	int mpcc_id, z_idx;
-	int alpha_blnd_mode = cfg->per_pixel_alpha ?
-			BLND_PP_ALPHA : BLND_GLOBAL_ALPHA;
+	unsigned int opp_id;
+	unsigned int top_sel;
+	unsigned int bot_sel;
+	unsigned int out_mux;
+	struct mpcc *mpcc;
+	int mpcc_id;
+	int bot_mpcc_id;
+
+	REG_GET(MUX[tree->opp_id], MPC_OUT_MUX, &out_mux);
+
+	if (out_mux != 0xf) {
+		for (mpcc_id = 0; mpcc_id < mpc10->num_mpcc; mpcc_id++) {
+			REG_GET(MPCC_OPP_ID[mpcc_id],  MPCC_OPP_ID,  &opp_id);
+			REG_GET(MPCC_TOP_SEL[mpcc_id], MPCC_TOP_SEL, &top_sel);
+			REG_GET(MPCC_STATUS[mpcc_id],  MPCC_BOT_SEL, &bot_sel);
 
-	/* find z_idx for the dpp that requires blending mode update*/
-	for (z_idx = 0; z_idx < cfg->tree_cfg->num_pipes; z_idx++)
-		if (cfg->tree_cfg->dpp[z_idx] == cfg->dpp_id)
-			break;
+			if ((opp_id == tree->opp_id) && (top_sel != 0xf)) {
+				mpcc = mpc1_get_mpcc(mpc, mpcc_id);
+				mpcc->dpp_id = top_sel;
+				mpc10->mpcc_in_use_mask |= 1 << mpcc_id;
 
-	ASSERT(z_idx < cfg->tree_cfg->num_pipes);
-	mpcc_id = cfg->tree_cfg->mpcc[z_idx];
+				if (out_mux == mpcc_id)
+					tree->opp_list = mpcc;
+				if (bot_sel != 0xf && bot_sel < mpc10->num_mpcc) {
+					bot_mpcc_id = bot_sel;
+					REG_GET(MPCC_OPP_ID[bot_mpcc_id],  MPCC_OPP_ID,  &opp_id);
+					REG_GET(MPCC_TOP_SEL[bot_mpcc_id], MPCC_TOP_SEL, &top_sel);
+					if ((opp_id == tree->opp_id) && (top_sel != 0xf)) {
+						struct mpcc *mpcc_bottom = mpc1_get_mpcc(mpc, bot_mpcc_id);
 
-	REG_UPDATE_2(MPCC_CONTROL[mpcc_id],
-			MPCC_ALPHA_BLND_MODE, alpha_blnd_mode,
-			MPCC_ALPHA_MULTIPLIED_MODE, cfg->pre_multiplied_alpha);
+						mpcc->mpcc_bot = mpcc_bottom;
+					}
+				}
+			}
+		}
+	}
 }
 
-int mpc10_get_opp_id(struct mpc *mpc, int mpcc_id)
+static void mpc1_init_mpcc(struct mpcc *mpcc, int mpcc_inst)
 {
-	struct dcn10_mpc *mpc10 = TO_DCN10_MPC(mpc);
-	int opp_id = 0xF;
-
-	REG_GET(MPCC_OPP_ID[mpcc_id], MPCC_OPP_ID, &opp_id);
-
-	return opp_id;
+	mpcc->mpcc_id = mpcc_inst;
+	mpcc->dpp_id = 0xf;
+	mpcc->mpcc_bot = NULL;
+	mpcc->blnd_cfg.overlap_only = false;
+	mpcc->blnd_cfg.global_alpha = 0xff;
+	mpcc->blnd_cfg.global_gain = 0xff;
+	mpcc->sm_cfg.enable = false;
 }
 
 const struct mpc_funcs dcn10_mpc_funcs = {
-		.add = mpc10_mpcc_add,
-		.remove = mpc10_mpcc_remove,
-		.wait_for_idle = mpc10_assert_idle_mpcc,
-		.update_blend_mode = mpc10_update_blend_mode,
-		.get_opp_id = mpc10_get_opp_id,
+	.insert_plane = mpc1_insert_plane,
+	.remove_mpcc = mpc1_remove_mpcc,
+	.reset_mpcc = mpc1_reset_mpcc,
+	.get_mpcc_for_dpp = mpc1_get_mpcc_for_dpp,
+	.wait_for_idle = mpc1_assert_idle_mpcc,
+	.assert_mpcc_idle_before_connect = mpc1_assert_mpcc_idle_before_connect,
+	.init_mpcc_list_from_hw = mpc1_init_mpcc_list_from_hw,
+	.update_blending = mpc1_update_blending,
+	.get_opp_id = mpc1_get_opp_id,
 };
 
 void dcn10_mpc_construct(struct dcn10_mpc *mpc10,
@@ -360,6 +426,8 @@ void dcn10_mpc_construct(struct dcn10_mpc *mpc10,
 	const struct dcn_mpc_mask *mpc_mask,
 	int num_mpcc)
 {
+	int i;
+
 	mpc10->base.ctx = ctx;
 
 	mpc10->base.funcs = &dcn10_mpc_funcs;
@@ -370,5 +438,8 @@ void dcn10_mpc_construct(struct dcn10_mpc *mpc10,
 
 	mpc10->mpcc_in_use_mask = 0;
 	mpc10->num_mpcc = num_mpcc;
+
+	for (i = 0; i < MAX_MPCC; i++)
+		mpc1_init_mpcc(&mpc10->base.mpcc_array[i], i);
 }
 

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.h

@@ -30,9 +30,6 @@
 #define TO_DCN10_MPC(mpc_base) \
 	container_of(mpc_base, struct dcn10_mpc, base)
 
-#define MAX_MPCC 6
-#define MAX_OPP 6
-
 #define MPC_COMMON_REG_LIST_DCN1_0(inst) \
 	SRII(MPCC_TOP_SEL, MPCC, inst),\
 	SRII(MPCC_BOT_SEL, MPCC, inst),\
@@ -42,7 +39,8 @@
 	SRII(MPCC_BG_G_Y, MPCC, inst),\
 	SRII(MPCC_BG_R_CR, MPCC, inst),\
 	SRII(MPCC_BG_B_CB, MPCC, inst),\
-	SRII(MPCC_BG_B_CB, MPCC, inst)
+	SRII(MPCC_BG_B_CB, MPCC, inst),\
+	SRII(MPCC_SM_CONTROL, MPCC, inst)
 
 #define MPC_OUT_MUX_COMMON_REG_LIST_DCN1_0(inst) \
 	SRII(MUX, MPC_OUT, inst)
@@ -56,6 +54,7 @@
 	uint32_t MPCC_BG_G_Y[MAX_MPCC]; \
 	uint32_t MPCC_BG_R_CR[MAX_MPCC]; \
 	uint32_t MPCC_BG_B_CB[MAX_MPCC]; \
+	uint32_t MPCC_SM_CONTROL[MAX_MPCC]; \
 	uint32_t MUX[MAX_OPP];
 
 #define MPC_COMMON_MASK_SH_LIST_DCN1_0(mask_sh)\
@@ -65,12 +64,20 @@
 	SF(MPCC0_MPCC_CONTROL, MPCC_ALPHA_BLND_MODE, mask_sh),\
 	SF(MPCC0_MPCC_CONTROL, MPCC_ALPHA_MULTIPLIED_MODE, mask_sh),\
 	SF(MPCC0_MPCC_CONTROL, MPCC_BLND_ACTIVE_OVERLAP_ONLY, mask_sh),\
+	SF(MPCC0_MPCC_CONTROL, MPCC_GLOBAL_ALPHA, mask_sh),\
+	SF(MPCC0_MPCC_CONTROL, MPCC_GLOBAL_GAIN, mask_sh),\
 	SF(MPCC0_MPCC_STATUS, MPCC_IDLE, mask_sh),\
 	SF(MPCC0_MPCC_STATUS, MPCC_BUSY, mask_sh),\
 	SF(MPCC0_MPCC_OPP_ID, MPCC_OPP_ID, mask_sh),\
 	SF(MPCC0_MPCC_BG_G_Y, MPCC_BG_G_Y, mask_sh),\
 	SF(MPCC0_MPCC_BG_R_CR, MPCC_BG_R_CR, mask_sh),\
 	SF(MPCC0_MPCC_BG_B_CB, MPCC_BG_B_CB, mask_sh),\
+	SF(MPCC0_MPCC_SM_CONTROL, MPCC_SM_EN, mask_sh),\
+	SF(MPCC0_MPCC_SM_CONTROL, MPCC_SM_MODE, mask_sh),\
+	SF(MPCC0_MPCC_SM_CONTROL, MPCC_SM_FRAME_ALT, mask_sh),\
+	SF(MPCC0_MPCC_SM_CONTROL, MPCC_SM_FIELD_ALT, mask_sh),\
+	SF(MPCC0_MPCC_SM_CONTROL, MPCC_SM_FORCE_NEXT_FRAME_POL, mask_sh),\
+	SF(MPCC0_MPCC_SM_CONTROL, MPCC_SM_FORCE_NEXT_TOP_POL, mask_sh),\
 	SF(MPC_OUT0_MUX, MPC_OUT_MUX, mask_sh)
 
 #define MPC_REG_FIELD_LIST(type) \
@@ -80,12 +87,20 @@
 	type MPCC_ALPHA_BLND_MODE;\
 	type MPCC_ALPHA_MULTIPLIED_MODE;\
 	type MPCC_BLND_ACTIVE_OVERLAP_ONLY;\
+	type MPCC_GLOBAL_ALPHA;\
+	type MPCC_GLOBAL_GAIN;\
 	type MPCC_IDLE;\
 	type MPCC_BUSY;\
 	type MPCC_OPP_ID;\
 	type MPCC_BG_G_Y;\
 	type MPCC_BG_R_CR;\
 	type MPCC_BG_B_CB;\
+	type MPCC_SM_EN;\
+	type MPCC_SM_MODE;\
+	type MPCC_SM_FRAME_ALT;\
+	type MPCC_SM_FIELD_ALT;\
+	type MPCC_SM_FORCE_NEXT_FRAME_POL;\
+	type MPCC_SM_FORCE_NEXT_TOP_POL;\
 	type MPC_OUT_MUX;
 
 struct dcn_mpc_registers {
@@ -117,23 +132,57 @@ void dcn10_mpc_construct(struct dcn10_mpc *mpcc10,
 	const struct dcn_mpc_mask *mpc_mask,
 	int num_mpcc);
 
-int mpc10_mpcc_add(
+struct mpcc *mpc1_insert_plane(
+	struct mpc *mpc,
+	struct mpc_tree *tree,
+	struct mpcc_blnd_cfg *blnd_cfg,
+	struct mpcc_sm_cfg *sm_cfg,
+	struct mpcc *insert_above_mpcc,
+	int dpp_id,
+	int mpcc_id);
+
+void mpc1_remove_mpcc(
 	struct mpc *mpc,
-		struct mpcc_cfg *cfg);
+	struct mpc_tree *tree,
+	struct mpcc *mpcc);
 
-void mpc10_mpcc_remove(
+void mpc1_reset_mpcc(
 	struct mpc *mpc,
-		struct mpc_tree_cfg *tree_cfg,
-		int opp_id,
-		int dpp_id);
+	int mpcc_id);
+
 
-void mpc10_assert_idle_mpcc(
+void mpc1_assert_idle_mpcc(
 	struct mpc *mpc,
 	int id);
 
-void mpc10_update_blend_mode(
+void mpc1_set_bg_color(
+	struct mpc *mpc,
+	struct tg_color *bg_color,
+	int id);
+
+void mpc1_update_stereo_mix(
+	struct mpc *mpc,
+	struct mpcc_sm_cfg *sm_cfg,
+	int mpcc_id);
+
+bool mpc1_is_mpcc_idle(
+	struct mpc *mpc,
+	int mpcc_id);
+
+void mpc1_assert_mpcc_idle_before_connect(
+	struct mpc *mpc,
+	int mpcc_id);
+
+void mpc1_init_mpcc_list_from_hw(
 	struct mpc *mpc,
-		struct mpcc_cfg *cfg);
-int mpc10_get_opp_id(struct mpc *mpc, int mpcc_id);
+	struct mpc_tree *tree);
+
+struct mpcc *mpc1_get_mpcc(
+	struct mpc *mpc,
+	int mpcc_id);
+
+struct mpcc *mpc1_get_mpcc_for_dpp(
+	struct mpc_tree *tree,
+	int dpp_id);
 
 #endif

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_opp.c

@@ -330,12 +330,19 @@ void dcn10_opp_construct(struct dcn10_opp *oppn10,
 	const struct dcn10_opp_shift *opp_shift,
 	const struct dcn10_opp_mask *opp_mask)
 {
+	int i;
+
 	oppn10->base.ctx = ctx;
 	oppn10->base.inst = inst;
 	oppn10->base.funcs = &dcn10_opp_funcs;
 
+	oppn10->base.mpc_tree_params.opp_id = inst;
+	oppn10->base.mpc_tree_params.opp_list = NULL;
+
+	for (i = 0; i < MAX_PIPES; i++)
+		oppn10->base.mpcc_disconnect_pending[i] = false;
+
 	oppn10->regs = regs;
 	oppn10->opp_shift = opp_shift;
 	oppn10->opp_mask = opp_mask;
 }
-

drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h

@@ -26,7 +26,10 @@
 #define __DC_MPCC_H__
 
 #include "dc_hw_types.h"
-#include "opp.h"
+#include "hw_shared.h"
+
+#define MAX_MPCC 6
+#define MAX_OPP 6
 
 enum mpc_output_csc_mode {
 	MPC_OUTPUT_CSC_DISABLE = 0,
@@ -34,45 +37,156 @@ enum mpc_output_csc_mode {
 	MPC_OUTPUT_CSC_COEF_B
 };
 
-struct mpcc_cfg {
-	int dpp_id;
-	int opp_id;
-	struct mpc_tree_cfg *tree_cfg;
-	unsigned int z_index;
 
-	struct tg_color black_color;
-	bool per_pixel_alpha;
-	bool pre_multiplied_alpha;
+enum mpcc_blend_mode {
+	MPCC_BLEND_MODE_BYPASS,
+	MPCC_BLEND_MODE_TOP_LAYER_PASSTHROUGH,
+	MPCC_BLEND_MODE_TOP_LAYER_ONLY,
+	MPCC_BLEND_MODE_TOP_BOT_BLENDING
+};
+
+enum mpcc_alpha_blend_mode {
+	MPCC_ALPHA_BLEND_MODE_PER_PIXEL_ALPHA,
+	MPCC_ALPHA_BLEND_MODE_PER_PIXEL_ALPHA_COMBINED_GLOBAL_GAIN,
+	MPCC_ALPHA_BLEND_MODE_GLOBAL_ALPHA
+};
+
+/*
+ * MPCC blending configuration
+ */
+struct mpcc_blnd_cfg {
+	struct tg_color black_color;	/* background color */
+	enum mpcc_alpha_blend_mode alpha_mode;	/* alpha blend mode */
+	bool pre_multiplied_alpha;	/* alpha pre-multiplied mode flag */
+	int global_gain;
+	int global_alpha;
+	bool overlap_only;
+
+};
+
+struct mpcc_sm_cfg {
+	bool enable;
+	/* 0-single plane,2-row subsampling,4-column subsampling,6-checkboard subsampling */
+	int sm_mode;
+	/* 0- disable frame alternate, 1- enable frame alternate */
+	bool frame_alt;
+	/* 0- disable field alternate, 1- enable field alternate */
+	bool field_alt;
+	/* 0-no force,2-force frame polarity from top,3-force frame polarity from bottom */
+	int force_next_frame_porlarity;
+	/* 0-no force,2-force field polarity from top,3-force field polarity from bottom */
+	int force_next_field_polarity;
+};
+
+/*
+ * MPCC connection and blending configuration for a single MPCC instance.
+ * This struct is used as a node in an MPC tree.
+ */
+struct mpcc {
+	int mpcc_id;			/* MPCC physical instance */
+	int dpp_id;			/* DPP input to this MPCC */
+	struct mpcc *mpcc_bot;		/* pointer to bottom layer MPCC.  NULL when not connected */
+	struct mpcc_blnd_cfg blnd_cfg;	/* The blending configuration for this MPCC */
+	struct mpcc_sm_cfg sm_cfg;	/* stereo mix setting for this MPCC */
+};
+
+/*
+ * MPC tree represents all MPCC connections for a pipe.
+ */
+struct mpc_tree {
+	int opp_id;			/* The OPP instance that owns this MPC tree */
+	struct mpcc *opp_list;		/* The top MPCC layer of the MPC tree that outputs to OPP endpoint */
 };
 
 struct mpc {
 	const struct mpc_funcs *funcs;
 	struct dc_context *ctx;
+
+	struct mpcc mpcc_array[MAX_MPCC];
 };
 
 struct mpc_funcs {
-	int (*add)(struct mpc *mpc, struct mpcc_cfg *cfg);
+	/*
+	 * Insert DPP into MPC tree based on specified blending position.
+	 * Only used for planes that are part of blending chain for OPP output
+	 *
+	 * Parameters:
+	 * [in/out] mpc		- MPC context.
+	 * [in/out] tree	- MPC tree structure that plane will be added to.
+	 * [in]	blnd_cfg	- MPCC blending configuration for the new blending layer.
+	 * [in]	sm_cfg		- MPCC stereo mix configuration for the new blending layer.
+	 *			  stereo mix must disable for the very bottom layer of the tree config.
+	 * [in]	insert_above_mpcc - Insert new plane above this MPCC.  If NULL, insert as bottom plane.
+	 * [in]	dpp_id		 - DPP instance for the plane to be added.
+	 * [in]	mpcc_id		 - The MPCC physical instance to use for blending.
+	 *
+	 * Return:  struct mpcc* - MPCC that was added.
+	 */
+	struct mpcc* (*insert_plane)(
+			struct mpc *mpc,
+			struct mpc_tree *tree,
+			struct mpcc_blnd_cfg *blnd_cfg,
+			struct mpcc_sm_cfg *sm_cfg,
+			struct mpcc *insert_above_mpcc,
+			int dpp_id,
+			int mpcc_id);
 
-	void (*remove)(struct mpc *mpc,
-			struct mpc_tree_cfg *tree_cfg,
-			int opp_id,
-			int mpcc_inst);
+	/*
+	 * Remove a specified MPCC from the MPC tree.
+	 *
+	 * Parameters:
+	 * [in/out] mpc		- MPC context.
+	 * [in/out] tree	- MPC tree structure that plane will be removed from.
+	 * [in/out] mpcc	- MPCC to be removed from tree.
+	 *
+	 * Return:  void
+	 */
+	void (*remove_mpcc)(
+			struct mpc *mpc,
+			struct mpc_tree *tree,
+			struct mpcc *mpcc);
 
-	void (*wait_for_idle)(struct mpc *mpc, int id);
+	/*
+	 * Reset the MPCC HW status by disconnecting all muxes.
+	 *
+	 * Parameters:
+	 * [in/out] mpc		- MPC context.
+	 * [in]     mpcc_id	- The MPCC physical instance to reset.
+	 *
+	 * Return:  void
+	 */
+	void (*reset_mpcc)(
+		struct mpc *mpc,
+		int mpcc_id);
 
-	void (*update_blend_mode)(struct mpc *mpc, struct mpcc_cfg *cfg);
+	/*
+	 * Update the blending configuration for a specified MPCC.
+	 *
+	 * Parameters:
+	 * [in/out] mpc		- MPC context.
+	 * [in]     blnd_cfg	- MPCC blending configuration.
+	 * [in]     mpcc_id	- The MPCC physical instance.
+	 *
+	 * Return:  void
+	 */
+	void (*update_blending)(
+		struct mpc *mpc,
+		struct mpcc_blnd_cfg *blnd_cfg,
+		int mpcc_id);
 
-	int (*get_opp_id)(struct mpc *mpc, int mpcc_id);
+	struct mpcc* (*get_mpcc_for_dpp)(
+			struct mpc_tree *tree,
+			int dpp_id);
 
-	void (*set_output_csc)(struct mpc *mpc,
-			int opp_id,
-			const struct out_csc_color_matrix *tbl_entry,
-			enum mpc_output_csc_mode ocsc_mode);
+	void (*wait_for_idle)(struct mpc *mpc, int id);
+
+	void (*assert_mpcc_idle_before_connect)(struct mpc *mpc, int mpcc_id);
 
-	void (*set_ocsc_default)(struct mpc *mpc,
-			int opp_id,
-			enum dc_color_space color_space,
-			enum mpc_output_csc_mode ocsc_mode);
+	void (*init_mpcc_list_from_hw)(
+		struct mpc *mpc,
+		struct mpc_tree *tree);
+
+	int (*get_opp_id)(struct mpc *mpc, int mpcc_id);
 
 };
 

drivers/gpu/drm/amd/display/dc/inc/hw/opp.h

@@ -29,6 +29,7 @@
 #include "hw_shared.h"
 #include "dc_hw_types.h"
 #include "transform.h"
+#include "mpc.h"
 
 struct fixed31_32;
 
@@ -204,7 +205,7 @@ struct output_pixel_processor {
 	struct dc_context *ctx;
 	uint32_t inst;
 	struct pwl_params regamma_params;
-	struct mpc_tree_cfg mpc_tree;
+	struct mpc_tree mpc_tree_params;
 	bool mpcc_disconnect_pending[MAX_PIPES];
 	const struct opp_funcs *funcs;
 };