1 files changed, 130 insertions, 26 deletions

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index e03d6091f736..421138bc3cb7 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -915,10 +915,9 @@ static int dpu_plane_atomic_check_nosspp(struct drm_plane *plane,
 	return 0;
 }
 
-static int dpu_plane_is_multirect_parallel_capable(struct dpu_hw_sspp *sspp,
-						   struct dpu_sw_pipe_cfg *pipe_cfg,
-						   const struct msm_format *fmt,
-						   uint32_t max_linewidth)
+static int dpu_plane_is_multirect_capable(struct dpu_hw_sspp *sspp,
+					  struct dpu_sw_pipe_cfg *pipe_cfg,
+					  const struct msm_format *fmt)
 {
 	if (drm_rect_width(&pipe_cfg->src_rect) != drm_rect_width(&pipe_cfg->dst_rect) ||
 	    drm_rect_height(&pipe_cfg->src_rect) != drm_rect_height(&pipe_cfg->dst_rect))
@@ -930,10 +929,6 @@ static int dpu_plane_is_multirect_parallel_capable(struct dpu_hw_sspp *sspp,
 	if (MSM_FORMAT_IS_YUV(fmt))
 		return false;
 
-	if (MSM_FORMAT_IS_UBWC(fmt) &&
-	    drm_rect_width(&pipe_cfg->src_rect) > max_linewidth / 2)
-		return false;
-
 	if (!test_bit(DPU_SSPP_SMART_DMA_V1, &sspp->cap->features) &&
 	    !test_bit(DPU_SSPP_SMART_DMA_V2, &sspp->cap->features))
 		return false;
@@ -941,6 +936,27 @@ static int dpu_plane_is_multirect_parallel_capable(struct dpu_hw_sspp *sspp,
 	return true;
 }
 
+static int dpu_plane_is_parallel_capable(struct dpu_sw_pipe_cfg *pipe_cfg,
+					 const struct msm_format *fmt,
+					 uint32_t max_linewidth)
+{
+	if (MSM_FORMAT_IS_UBWC(fmt) &&
+	    drm_rect_width(&pipe_cfg->src_rect) > max_linewidth / 2)
+		return false;
+
+	return true;
+}
+
+static int dpu_plane_is_multirect_parallel_capable(struct dpu_hw_sspp *sspp,
+						   struct dpu_sw_pipe_cfg *pipe_cfg,
+						   const struct msm_format *fmt,
+						   uint32_t max_linewidth)
+{
+	return dpu_plane_is_multirect_capable(sspp, pipe_cfg, fmt) &&
+		dpu_plane_is_parallel_capable(pipe_cfg, fmt, max_linewidth);
+}
+
+
 static int dpu_plane_atomic_check_sspp(struct drm_plane *plane,
 				       struct drm_atomic_state *state,
 				       const struct drm_crtc_state *crtc_state)
@@ -1002,6 +1018,69 @@ static bool dpu_plane_try_multirect_parallel(struct dpu_sw_pipe *pipe, struct dp
 	return true;
 }
 
+static int dpu_plane_try_multirect_shared(struct dpu_plane_state *pstate,
+					  struct dpu_plane_state *prev_adjacent_pstate,
+					  const struct msm_format *fmt,
+					  uint32_t max_linewidth)
+{
+	struct dpu_sw_pipe *pipe = &pstate->pipe;
+	struct dpu_sw_pipe *r_pipe = &pstate->r_pipe;
+	struct dpu_sw_pipe_cfg *pipe_cfg = &pstate->pipe_cfg;
+	struct dpu_sw_pipe *prev_pipe = &prev_adjacent_pstate->pipe;
+	struct dpu_sw_pipe_cfg *prev_pipe_cfg = &prev_adjacent_pstate->pipe_cfg;
+	const struct msm_format *prev_fmt = msm_framebuffer_format(prev_adjacent_pstate->base.fb);
+	u16 max_tile_height = 1;
+
+	if (prev_adjacent_pstate->r_pipe.sspp != NULL ||
+	    prev_pipe->multirect_mode != DPU_SSPP_MULTIRECT_NONE)
+		return false;
+
+	if (!dpu_plane_is_multirect_capable(pipe->sspp, pipe_cfg, fmt) ||
+	    !dpu_plane_is_multirect_capable(prev_pipe->sspp, prev_pipe_cfg, prev_fmt))
+		return false;
+
+	if (MSM_FORMAT_IS_UBWC(fmt))
+		max_tile_height = max(max_tile_height, fmt->tile_height);
+
+	if (MSM_FORMAT_IS_UBWC(prev_fmt))
+		max_tile_height = max(max_tile_height, prev_fmt->tile_height);
+
+	r_pipe->multirect_index = DPU_SSPP_RECT_SOLO;
+	r_pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
+
+	r_pipe->sspp = NULL;
+
+	if (dpu_plane_is_parallel_capable(pipe_cfg, fmt, max_linewidth) &&
+	    dpu_plane_is_parallel_capable(prev_pipe_cfg, prev_fmt, max_linewidth) &&
+	    (pipe_cfg->dst_rect.x1 >= prev_pipe_cfg->dst_rect.x2 ||
+	     prev_pipe_cfg->dst_rect.x1 >= pipe_cfg->dst_rect.x2)) {
+		pipe->sspp = prev_pipe->sspp;
+
+		pipe->multirect_index = DPU_SSPP_RECT_1;
+		pipe->multirect_mode = DPU_SSPP_MULTIRECT_PARALLEL;
+
+		prev_pipe->multirect_index = DPU_SSPP_RECT_0;
+		prev_pipe->multirect_mode = DPU_SSPP_MULTIRECT_PARALLEL;
+
+		return true;
+	}
+
+	if (pipe_cfg->dst_rect.y1 >= prev_pipe_cfg->dst_rect.y2 + 2 * max_tile_height ||
+	    prev_pipe_cfg->dst_rect.y1 >= pipe_cfg->dst_rect.y2 + 2 * max_tile_height) {
+		pipe->sspp = prev_pipe->sspp;
+
+		pipe->multirect_index = DPU_SSPP_RECT_1;
+		pipe->multirect_mode = DPU_SSPP_MULTIRECT_TIME_MX;
+
+		prev_pipe->multirect_index = DPU_SSPP_RECT_0;
+		prev_pipe->multirect_mode = DPU_SSPP_MULTIRECT_TIME_MX;
+
+		return true;
+	}
+
+	return false;
+}
+
 static int dpu_plane_atomic_check(struct drm_plane *plane,
 				  struct drm_atomic_state *state)
 {
@@ -1102,13 +1181,14 @@ static int dpu_plane_virtual_atomic_check(struct drm_plane *plane,
 static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc,
 					      struct dpu_global_state *global_state,
 					      struct drm_atomic_state *state,
-					      struct drm_plane_state *plane_state)
+					      struct drm_plane_state *plane_state,
+					      struct drm_plane_state *prev_adjacent_plane_state)
 {
 	const struct drm_crtc_state *crtc_state = NULL;
 	struct drm_plane *plane = plane_state->plane;
 	struct dpu_kms *dpu_kms = _dpu_plane_get_kms(plane);
 	struct dpu_rm_sspp_requirements reqs;
-	struct dpu_plane_state *pstate;
+	struct dpu_plane_state *pstate, *prev_adjacent_pstate;
 	struct dpu_sw_pipe *pipe;
 	struct dpu_sw_pipe *r_pipe;
 	struct dpu_sw_pipe_cfg *pipe_cfg;
@@ -1120,6 +1200,8 @@ static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc,
 							   plane_state->crtc);
 
 	pstate = to_dpu_plane_state(plane_state);
+	prev_adjacent_pstate = prev_adjacent_plane_state ?
+		to_dpu_plane_state(prev_adjacent_plane_state) : NULL;
 	pipe = &pstate->pipe;
 	r_pipe = &pstate->r_pipe;
 	pipe_cfg = &pstate->pipe_cfg;
@@ -1138,24 +1220,42 @@ static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc,
 
 	reqs.rot90 = drm_rotation_90_or_270(plane_state->rotation);
 
-	pipe->sspp = dpu_rm_reserve_sspp(&dpu_kms->rm, global_state, crtc, &reqs);
-	if (!pipe->sspp)
-		return -ENODEV;
+	if (drm_rect_width(&r_pipe_cfg->src_rect) == 0) {
+		if (!prev_adjacent_pstate ||
+		    !dpu_plane_try_multirect_shared(pstate, prev_adjacent_pstate, fmt,
+						    dpu_kms->catalog->caps->max_linewidth)) {
+			pipe->sspp = dpu_rm_reserve_sspp(&dpu_kms->rm, global_state, crtc, &reqs);
+			if (!pipe->sspp)
+				return -ENODEV;
 
-	if (!dpu_plane_try_multirect_parallel(pipe, pipe_cfg, r_pipe, r_pipe_cfg,
-					      pipe->sspp,
-					      msm_framebuffer_format(plane_state->fb),
-					      dpu_kms->catalog->caps->max_linewidth)) {
-		/* multirect is not possible, use two SSPP blocks */
-		r_pipe->sspp = dpu_rm_reserve_sspp(&dpu_kms->rm, global_state, crtc, &reqs);
-		if (!r_pipe->sspp)
+			r_pipe->sspp = NULL;
+
+			pipe->multirect_index = DPU_SSPP_RECT_SOLO;
+			pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
+
+			r_pipe->multirect_index = DPU_SSPP_RECT_SOLO;
+			r_pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
+		}
+	} else {
+		pipe->sspp = dpu_rm_reserve_sspp(&dpu_kms->rm, global_state, crtc, &reqs);
+		if (!pipe->sspp)
 			return -ENODEV;
 
-		pipe->multirect_index = DPU_SSPP_RECT_SOLO;
-		pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
+		if (!dpu_plane_try_multirect_parallel(pipe, pipe_cfg, r_pipe, r_pipe_cfg,
+						      pipe->sspp,
+						      msm_framebuffer_format(plane_state->fb),
+						      dpu_kms->catalog->caps->max_linewidth)) {
+			/* multirect is not possible, use two SSPP blocks */
+			r_pipe->sspp = dpu_rm_reserve_sspp(&dpu_kms->rm, global_state, crtc, &reqs);
+			if (!r_pipe->sspp)
+				return -ENODEV;
 
-		r_pipe->multirect_index = DPU_SSPP_RECT_SOLO;
-		r_pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
+			pipe->multirect_index = DPU_SSPP_RECT_SOLO;
+			pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
+
+			r_pipe->multirect_index = DPU_SSPP_RECT_SOLO;
+			r_pipe->multirect_mode = DPU_SSPP_MULTIRECT_NONE;
+		}
 	}
 
 	return dpu_plane_atomic_check_sspp(plane, state, crtc_state);
@@ -1168,6 +1268,7 @@ int dpu_assign_plane_resources(struct dpu_global_state *global_state,
 			       unsigned int num_planes)
 {
 	unsigned int i;
+	struct drm_plane_state *prev_adjacent_plane_state = NULL;
 
 	for (i = 0; i < num_planes; i++) {
 		struct drm_plane_state *plane_state = states[i];
@@ -1177,9 +1278,12 @@ int dpu_assign_plane_resources(struct dpu_global_state *global_state,
 			continue;
 
 		int ret = dpu_plane_virtual_assign_resources(crtc, global_state,
-							 state, plane_state);
+							     state, plane_state,
+							     prev_adjacent_plane_state);
 		if (ret)
-			return ret;
+			break;
+
+		prev_adjacent_plane_state = plane_state;
 	}
 
 	return 0;