drm/msm/dpu: enable cursor plane on dpu

Reserve DMA pipe for cursor plane and attach it to the
crtc during the initialization.

Changes in V2:
	None
Signed-off-by: Sravanthi Kollukuduru <skolluku@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c

@@ -2082,7 +2082,8 @@ static const struct drm_crtc_helper_funcs dpu_crtc_helper_funcs = {
 };
 
 /* initialize crtc */
-struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane)
+struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane,
+				struct drm_plane *cursor)
 {
 	struct drm_crtc *crtc = NULL;
 	struct dpu_crtc *dpu_crtc = NULL;
@@ -2119,7 +2120,7 @@ struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane)
 				dpu_crtc_frame_event_work);
 	}
 
-	drm_crtc_init_with_planes(dev, crtc, plane, NULL, &dpu_crtc_funcs,
+	drm_crtc_init_with_planes(dev, crtc, plane, cursor, &dpu_crtc_funcs,
 				NULL);
 
 	drm_crtc_helper_add(crtc, &dpu_crtc_helper_funcs);

drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h

@@ -375,9 +375,11 @@ void dpu_crtc_complete_commit(struct drm_crtc *crtc,
  * dpu_crtc_init - create a new crtc object
  * @dev: dpu device
  * @plane: base plane
+ * @cursor: cursor plane
  * @Return: new crtc object or error
  */
-struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane);
+struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane,
+			       struct drm_plane *cursor);
 
 /**
  * dpu_crtc_register_custom_event - api for enabling/disabling crtc event

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c

@@ -29,6 +29,9 @@
 	BIT(DPU_SSPP_TS_PREFILL) | BIT(DPU_SSPP_TS_PREFILL_REC1) |\
 	BIT(DPU_SSPP_CDP) | BIT(DPU_SSPP_EXCL_RECT))
 
+#define DMA_CURSOR_SDM845_MASK \
+	(DMA_SDM845_MASK | BIT(DPU_SSPP_CURSOR))
+
 #define MIXER_SDM845_MASK \
 	(BIT(DPU_MIXER_SOURCESPLIT) | BIT(DPU_DIM_LAYER))
 
@@ -174,45 +177,35 @@ static const struct dpu_sspp_sub_blks sdm845_dma_sblk_1 = _DMA_SBLK("9", 2);
 static const struct dpu_sspp_sub_blks sdm845_dma_sblk_2 = _DMA_SBLK("10", 3);
 static const struct dpu_sspp_sub_blks sdm845_dma_sblk_3 = _DMA_SBLK("11", 4);
 
-#define SSPP_VIG_BLK(_name, _id, _base, _sblk, _xinid, _clkctrl) \
-	{ \
-	.name = _name, .id = _id, \
-	.base = _base, .len = 0x1c8, \
-	.features = VIG_SDM845_MASK, \
-	.sblk = &_sblk, \
-	.xin_id = _xinid, \
-	.type = SSPP_TYPE_VIG, \
-	.clk_ctrl = _clkctrl \
-	}
-
-#define SSPP_DMA_BLK(_name, _id, _base, _sblk, _xinid, _clkctrl) \
+#define SSPP_BLK(_name, _id, _base, _features, \
+		_sblk, _xinid, _type, _clkctrl) \
 	{ \
 	.name = _name, .id = _id, \
 	.base = _base, .len = 0x1c8, \
-	.features = DMA_SDM845_MASK, \
+	.features = _features, \
 	.sblk = &_sblk, \
 	.xin_id = _xinid, \
-	.type = SSPP_TYPE_DMA, \
+	.type = _type, \
 	.clk_ctrl = _clkctrl \
 	}
 
 static struct dpu_sspp_cfg sdm845_sspp[] = {
-	SSPP_VIG_BLK("sspp_0", SSPP_VIG0, 0x4000,
-		sdm845_vig_sblk_0, 0, DPU_CLK_CTRL_VIG0),
-	SSPP_VIG_BLK("sspp_1", SSPP_VIG1, 0x6000,
-		sdm845_vig_sblk_1, 4, DPU_CLK_CTRL_VIG1),
-	SSPP_VIG_BLK("sspp_2", SSPP_VIG2, 0x8000,
-		sdm845_vig_sblk_2, 8, DPU_CLK_CTRL_VIG2),
-	SSPP_VIG_BLK("sspp_3", SSPP_VIG3, 0xa000,
-		sdm845_vig_sblk_3, 12, DPU_CLK_CTRL_VIG3),
-	SSPP_DMA_BLK("sspp_8", SSPP_DMA0, 0x24000,
-		sdm845_dma_sblk_0, 1, DPU_CLK_CTRL_DMA0),
-	SSPP_DMA_BLK("sspp_9", SSPP_DMA1, 0x26000,
-		sdm845_dma_sblk_1, 5, DPU_CLK_CTRL_DMA1),
-	SSPP_DMA_BLK("sspp_10", SSPP_DMA2, 0x28000,
-		sdm845_dma_sblk_2, 9, DPU_CLK_CTRL_CURSOR0),
-	SSPP_DMA_BLK("sspp_11", SSPP_DMA3, 0x2a000,
-		sdm845_dma_sblk_3, 13, DPU_CLK_CTRL_CURSOR1),
+	SSPP_BLK("sspp_0", SSPP_VIG0, 0x4000, VIG_SDM845_MASK,
+		sdm845_vig_sblk_0, 0,  SSPP_TYPE_VIG, DPU_CLK_CTRL_VIG0),
+	SSPP_BLK("sspp_1", SSPP_VIG1, 0x6000, VIG_SDM845_MASK,
+		sdm845_vig_sblk_1, 4,  SSPP_TYPE_VIG, DPU_CLK_CTRL_VIG1),
+	SSPP_BLK("sspp_2", SSPP_VIG2, 0x8000, VIG_SDM845_MASK,
+		sdm845_vig_sblk_2, 8, SSPP_TYPE_VIG, DPU_CLK_CTRL_VIG2),
+	SSPP_BLK("sspp_3", SSPP_VIG3, 0xa000, VIG_SDM845_MASK,
+		sdm845_vig_sblk_3, 12,  SSPP_TYPE_VIG, DPU_CLK_CTRL_VIG3),
+	SSPP_BLK("sspp_8", SSPP_DMA0, 0x24000,  DMA_SDM845_MASK,
+		sdm845_dma_sblk_0, 1, SSPP_TYPE_DMA, DPU_CLK_CTRL_DMA0),
+	SSPP_BLK("sspp_9", SSPP_DMA1, 0x26000,  DMA_SDM845_MASK,
+		sdm845_dma_sblk_1, 5, SSPP_TYPE_DMA, DPU_CLK_CTRL_DMA1),
+	SSPP_BLK("sspp_10", SSPP_DMA2, 0x28000,  DMA_CURSOR_SDM845_MASK,
+		sdm845_dma_sblk_2, 9, SSPP_TYPE_DMA, DPU_CLK_CTRL_CURSOR0),
+	SSPP_BLK("sspp_11", SSPP_DMA3, 0x2a000,  DMA_CURSOR_SDM845_MASK,
+		sdm845_dma_sblk_3, 13, SSPP_TYPE_DMA, DPU_CLK_CTRL_CURSOR1),
 };
 
 /*************************************************************

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

@@ -531,12 +531,13 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 {
 	struct drm_device *dev;
 	struct drm_plane *primary_planes[MAX_PLANES], *plane;
+	struct drm_plane *cursor_planes[MAX_PLANES] = { NULL };
 	struct drm_crtc *crtc;
 
 	struct msm_drm_private *priv;
 	struct dpu_mdss_cfg *catalog;
 
-	int primary_planes_idx = 0, i, ret;
+	int primary_planes_idx = 0, cursor_planes_idx = 0, i, ret;
 	int max_crtc_count;
 
 	if (!dpu_kms || !dpu_kms->dev || !dpu_kms->dev->dev) {
@@ -556,16 +557,24 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 
 	max_crtc_count = min(catalog->mixer_count, priv->num_encoders);
 
-	/* Create the planes */
+	/* Create the planes, keeping track of one primary/cursor per crtc */
 	for (i = 0; i < catalog->sspp_count; i++) {
-		bool primary = true;
-
-		if (catalog->sspp[i].features & BIT(DPU_SSPP_CURSOR)
-			|| primary_planes_idx >= max_crtc_count)
-			primary = false;
-
-		plane = dpu_plane_init(dev, catalog->sspp[i].id, primary,
-				(1UL << max_crtc_count) - 1, 0);
+		enum drm_plane_type type;
+
+		if ((catalog->sspp[i].features & BIT(DPU_SSPP_CURSOR))
+			&& cursor_planes_idx < max_crtc_count)
+			type = DRM_PLANE_TYPE_CURSOR;
+		else if (primary_planes_idx < max_crtc_count)
+			type = DRM_PLANE_TYPE_PRIMARY;
+		else
+			type = DRM_PLANE_TYPE_OVERLAY;
+
+		DPU_DEBUG("Create plane type %d with features %lx (cur %lx)\n",
+			  type, catalog->sspp[i].features,
+			  catalog->sspp[i].features & BIT(DPU_SSPP_CURSOR));
+
+		plane = dpu_plane_init(dev, catalog->sspp[i].id, type,
+				       (1UL << max_crtc_count) - 1, 0);
 		if (IS_ERR(plane)) {
 			DPU_ERROR("dpu_plane_init failed\n");
 			ret = PTR_ERR(plane);
@@ -573,7 +582,9 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 		}
 		priv->planes[priv->num_planes++] = plane;
 
-		if (primary)
+		if (type == DRM_PLANE_TYPE_CURSOR)
+			cursor_planes[cursor_planes_idx++] = plane;
+		else if (type == DRM_PLANE_TYPE_PRIMARY)
 			primary_planes[primary_planes_idx++] = plane;
 	}
 
@@ -581,7 +592,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 
 	/* Create one CRTC per encoder */
 	for (i = 0; i < max_crtc_count; i++) {
-		crtc = dpu_crtc_init(dev, primary_planes[i]);
+		crtc = dpu_crtc_init(dev, primary_planes[i], cursor_planes[i]);
 		if (IS_ERR(crtc)) {
 			ret = PTR_ERR(crtc);
 			goto fail;

drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c

@@ -1829,7 +1829,7 @@ bool is_dpu_plane_virtual(struct drm_plane *plane)
 
 /* initialize plane */
 struct drm_plane *dpu_plane_init(struct drm_device *dev,
-		uint32_t pipe, bool primary_plane,
+		uint32_t pipe, enum drm_plane_type type,
 		unsigned long possible_crtcs, u32 master_plane_id)
 {
 	struct drm_plane *plane = NULL, *master_plane = NULL;
@@ -1837,7 +1837,6 @@ struct drm_plane *dpu_plane_init(struct drm_device *dev,
 	struct dpu_plane *pdpu;
 	struct msm_drm_private *priv;
 	struct dpu_kms *kms;
-	enum drm_plane_type type;
 	int zpos_max = DPU_ZPOS_MAX;
 	int ret = -EINVAL;
 
@@ -1918,12 +1917,6 @@ struct drm_plane *dpu_plane_init(struct drm_device *dev,
 		goto clean_sspp;
 	}
 
-	if (pdpu->features & BIT(DPU_SSPP_CURSOR))
-		type = DRM_PLANE_TYPE_CURSOR;
-	else if (primary_plane)
-		type = DRM_PLANE_TYPE_PRIMARY;
-	else
-		type = DRM_PLANE_TYPE_OVERLAY;
 	ret = drm_universal_plane_init(dev, plane, 0xff, &dpu_plane_funcs,
 				pdpu->formats, pdpu->nformats,
 				NULL, type, NULL);

drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h

@@ -122,7 +122,7 @@ void dpu_plane_set_error(struct drm_plane *plane, bool error);
  * dpu_plane_init - create new dpu plane for the given pipe
  * @dev:   Pointer to DRM device
  * @pipe:  dpu hardware pipe identifier
- * @primary_plane: true if this pipe is primary plane for crtc
+ * @type:  Plane type - PRIMARY/OVERLAY/CURSOR
  * @possible_crtcs: bitmask of crtc that can be attached to the given pipe
  * @master_plane_id: primary plane id of a multirect pipe. 0 value passed for
  *                   a regular plane initialization. A non-zero primary plane
@@ -130,7 +130,7 @@ void dpu_plane_set_error(struct drm_plane *plane, bool error);
  *
  */
 struct drm_plane *dpu_plane_init(struct drm_device *dev,
-		uint32_t pipe, bool primary_plane,
+		uint32_t pipe, enum drm_plane_type type,
 		unsigned long possible_crtcs, u32 master_plane_id);
 
 /**