disp: msm: stage layer with zorder 0 as base layer

Add support to stage layer with zorder 0 as base
layer and stage borderfill only during null commit.

Change-Id: I54356c1b7834227cc3da00c211e71ac5816ce51a
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>

msm/sde/sde_crtc.c

@@ -2479,7 +2479,7 @@ static void _sde_crtc_set_dim_layer_v1(struct sde_crtc_state *cstate,
 		user_cfg = &dim_layer_v1.layer_cfg[i];
 
 		dim_layer[i].flags = user_cfg->flags;
-		dim_layer[i].stage = user_cfg->stage + SDE_STAGE_0;
+		dim_layer[i].stage = user_cfg->stage;
 
 		dim_layer[i].rect.x = user_cfg->rect.x1;
 		dim_layer[i].rect.y = user_cfg->rect.y1;
@@ -4122,7 +4122,7 @@ static void sde_crtc_enable(struct drm_crtc *crtc,
 
 /* no input validation - caller API has all the checks */
 static int _sde_crtc_excl_dim_layer_check(struct drm_crtc_state *state,
-		struct plane_state pstates[], int cnt)
+		struct plane_state pstates[], int cnt, bool base_layer_staged)
 {
 	struct sde_crtc_state *cstate = to_sde_crtc_state(state);
 	struct drm_display_mode *mode = &state->adjusted_mode;
@@ -4149,6 +4149,8 @@ static int _sde_crtc_excl_dim_layer_check(struct drm_crtc_state *state,
 					mode->vdisplay);
 			rc = -E2BIG;
 			goto end;
+		} else if (!base_layer_staged) {
+			cstate->dim_layer[i].stage += SDE_STAGE_0;
 		}
 	}
 
@@ -4241,9 +4243,12 @@ static int _sde_crtc_check_secure_blend_config(struct drm_crtc *crtc,
 			int sec_stage = cnt ? pstates[0].sde_pstate->stage :
 						cstate->dim_layer[0].stage;
 
+			if (!sde_kms->catalog->has_base_layer)
+				sec_stage -= SDE_STAGE_0;
+
 			if ((!cnt && !cstate->num_dim_layers) ||
 				(sde_kms->catalog->sui_supported_blendstage
-						!= (sec_stage - SDE_STAGE_0))) {
+						!= sec_stage)) {
 				SDE_ERROR(
 				  "crtc%d: empty cnt%d/dim%d or bad stage%d\n",
 					DRMID(crtc), cnt,
@@ -4429,7 +4434,7 @@ static int _sde_crtc_check_get_pstates(struct drm_crtc *crtc,
 		/* check dim layer stage with every plane */
 		for (i = 0; i < cstate->num_dim_layers; i++) {
 			if (cstate->dim_layer[i].stage ==
-					(pstates[*cnt].stage + SDE_STAGE_0)) {
+					pstates[*cnt].stage) {
 				SDE_ERROR(
 					"plane:%d/dim_layer:%i-same stage:%d\n",
 					plane->base.id, i,
@@ -4505,10 +4510,21 @@ static int _sde_crtc_check_zpos(struct drm_crtc_state *state,
 {
 	int rc = 0, i, z_pos;
 	u32 zpos_cnt = 0;
+	struct drm_crtc *crtc;
+	struct sde_kms *kms;
+
+	crtc = &sde_crtc->base;
+	kms = _sde_crtc_get_kms(crtc);
+
+	if (!kms || !kms->catalog) {
+		SDE_ERROR("Invalid kms\n");
+		return -EINVAL;
+	}
 
 	sort(pstates, cnt, sizeof(pstates[0]), pstate_cmp, NULL);
 
-	rc = _sde_crtc_excl_dim_layer_check(state, pstates, cnt);
+	rc = _sde_crtc_excl_dim_layer_check(state, pstates, cnt,
+				kms->catalog->has_base_layer);
 	if (rc)
 		return rc;
 
@@ -4544,7 +4560,11 @@ static int _sde_crtc_check_zpos(struct drm_crtc_state *state,
 			zpos_cnt++;
 		}
 
-		pstates[i].sde_pstate->stage = z_pos + SDE_STAGE_0;
+		if (!kms->catalog->has_base_layer)
+			pstates[i].sde_pstate->stage = z_pos + SDE_STAGE_0;
+		else
+			pstates[i].sde_pstate->stage = z_pos;
+
 		SDE_DEBUG("%s: zpos %d", sde_crtc->name, z_pos);
 	}
 	return rc;

msm/sde/sde_hw_catalog.c

@@ -194,6 +194,7 @@ enum sde_prop {
 	PIPE_ORDER_VERSION,
 	SEC_SID_MASK,
 	SDE_LIMITS,
+	BASE_LAYER,
 	SDE_PROP_MAX,
 };
 
@@ -547,6 +548,7 @@ static struct sde_prop_type sde_prop[] = {
 			PROP_TYPE_U32},
 	{SEC_SID_MASK, "qcom,sde-secure-sid-mask", false, PROP_TYPE_U32_ARRAY},
 	{SDE_LIMITS, "qcom,sde-limits", false, PROP_TYPE_NODE},
+	{BASE_LAYER, "qcom,sde-mixer-stage-base-layer", false, PROP_TYPE_BOOL},
 };
 
 static struct sde_prop_type sde_perf_prop[] = {
@@ -3854,6 +3856,7 @@ static int sde_top_parse_dt(struct device_node *np, struct sde_mdss_cfg *cfg)
 	cfg->has_idle_pc = PROP_VALUE_ACCESS(prop_value, IDLE_PC, 0);
 	cfg->pipe_order_type = PROP_VALUE_ACCESS(prop_value,
 		PIPE_ORDER_VERSION, 0);
+	cfg->has_base_layer = PROP_VALUE_ACCESS(prop_value, BASE_LAYER, 0);
 
 	rc = sde_limit_parse_dt(np, cfg);
 	if (rc)

msm/sde/sde_hw_catalog.h

@@ -1417,6 +1417,7 @@ struct sde_limit_cfg {
  * @vbif_disable_inner_outer_shareable     VBIF requires disabling shareables
  * @inline_disable_const_clr     Disable constant color during inline rotate
  * @dither_luma_mode_support   Enables dither luma mode
+ * @has_base_layer     Supports staging layer as base layer
  * @sc_cfg: system cache configuration
  * @uidle_cfg		Settings for uidle feature
  * @sui_misr_supported  indicate if secure-ui-misr is supported
@@ -1478,6 +1479,7 @@ struct sde_mdss_cfg {
 	bool vbif_disable_inner_outer_shareable;
 	bool inline_disable_const_clr;
 	bool dither_luma_mode_support;
+	bool has_base_layer;
 
 	struct sde_sc_cfg sc_cfg;
 

msm/sde/sde_hw_ctl.c

@@ -830,8 +830,6 @@ static void sde_hw_ctl_setup_blendstage(struct sde_hw_ctl *ctx,
 	else
 		pipes_per_stage = 1;
 
-	mixercfg = CTL_MIXER_BORDER_OUT; /* always set BORDER_OUT */
-
 	if (!stage_cfg)
 		goto exit;
 
@@ -942,6 +940,10 @@ static void sde_hw_ctl_setup_blendstage(struct sde_hw_ctl *ctx,
 	}
 
 exit:
+	if ((!mixercfg && !mixercfg_ext && !mixercfg_ext2 && !mixercfg_ext3) ||
+			(stage_cfg && !stage_cfg->stage[0][0]))
+		mixercfg |= CTL_MIXER_BORDER_OUT;
+
 	SDE_REG_WRITE(c, CTL_LAYER(lm), mixercfg);
 	SDE_REG_WRITE(c, CTL_LAYER_EXT(lm), mixercfg_ext);
 	SDE_REG_WRITE(c, CTL_LAYER_EXT2(lm), mixercfg_ext2);

msm/sde/sde_hw_lm.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/iopoll.h>
@@ -197,6 +197,9 @@ static void sde_hw_lm_setup_dim_layer(struct sde_hw_mixer *ctx,
 	int stage_off;
 	u32 val = 0, alpha = 0;
 
+	if (dim_layer->stage == SDE_STAGE_BASE)
+		return;
+
 	stage_off = _stage_offset(ctx, dim_layer->stage);
 	if (stage_off < 0) {
 		SDE_ERROR("invalid stage_off:%d for dim layer\n", stage_off);

msm/sde/sde_plane.c

@@ -3464,7 +3464,10 @@ static void _sde_plane_install_properties(struct drm_plane *plane,
 		if (catalog->mixer_count &&
 				catalog->mixer[0].sblk->maxblendstages) {
 			zpos_max = catalog->mixer[0].sblk->maxblendstages - 1;
-			if (zpos_max > SDE_STAGE_MAX - SDE_STAGE_0 - 1)
+			if (catalog->has_base_layer &&
+					(zpos_max > SDE_STAGE_MAX - 1))
+				zpos_max = SDE_STAGE_MAX - 1;
+			else if (zpos_max > SDE_STAGE_MAX - SDE_STAGE_0 - 1)
 				zpos_max = SDE_STAGE_MAX - SDE_STAGE_0 - 1;
 		}
 	} else if (plane->type != DRM_PLANE_TYPE_PRIMARY) {