Re: [Freedreno] [PATCH 06/11] drm/msm/dpu: drop scaler config from plane state

abhinavk@xxxxxxxxxxxxxx · Thu, 21 Oct 2021 15:41:22 -0700

On 2021-09-30 06:59, Dmitry Baryshkov wrote:
Scaler and pixel_ext configuration does not contain a long living 
state,
it is used only during plane update, so remove these two fiels from
fiels ---> fields
dpu_plane_state and allocate them on stack.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

While addressing the bugs reported by the smatch tool, I saw that pe is 
not
being used at the moment.

412 static void _dpu_hw_sspp_setup_scaler3(struct dpu_hw_pipe *ctx,
413 		struct dpu_hw_pipe_cfg *sspp,
414 		struct dpu_hw_pixel_ext *pe,
415 		void *scaler_cfg)
416 {
417 	u32 idx;
418 	struct dpu_hw_scaler3_cfg *scaler3_cfg = scaler_cfg;
419
420 	(void)pe;
421 	if (_sspp_subblk_offset(ctx, DPU_SSPP_SCALER_QSEED3, &idx) || !sspp
422 		|| !scaler3_cfg || !ctx || !ctx->cap || !ctx->cap->sblk)
423 		return;
424
425 	dpu_hw_setup_scaler3(&ctx->hw, scaler3_cfg, idx,
426 			ctx->cap->sblk->scaler_blk.version,
427 			sspp->layout.format);
428 }

As part of this change, can you please drop this?

---
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 59 ++++++++++-------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h |  6 ---
 2 files changed, 26 insertions(+), 39 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 5288b5b824f8..4259c4ecde9b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -542,14 +542,12 @@ static void _dpu_plane_setup_scaler3(struct
dpu_plane *pdpu,
 		struct dpu_plane_state *pstate,
 		uint32_t src_w, uint32_t src_h, uint32_t dst_w, uint32_t dst_h,
 		struct dpu_hw_scaler3_cfg *scale_cfg,
+		struct dpu_hw_pixel_ext *pixel_ext,
 		const struct dpu_format *fmt,
 		uint32_t chroma_subsmpl_h, uint32_t chroma_subsmpl_v)
 {
 	uint32_t i;

-	memset(scale_cfg, 0, sizeof(*scale_cfg));
-	memset(&pstate->pixel_ext, 0, sizeof(struct dpu_hw_pixel_ext));
-
 	scale_cfg->phase_step_x[DPU_SSPP_COMP_0] =
 		mult_frac((1 << PHASE_STEP_SHIFT), src_w, dst_w);
 	scale_cfg->phase_step_y[DPU_SSPP_COMP_0] =
@@ -588,9 +586,9 @@ static void _dpu_plane_setup_scaler3(struct 
dpu_plane *pdpu,
 			scale_cfg->preload_y[i] = DPU_QSEED3_DEFAULT_PRELOAD_V;
 		}

-		pstate->pixel_ext.num_ext_pxls_top[i] =
+		pixel_ext->num_ext_pxls_top[i] =
 			scale_cfg->src_height[i];
-		pstate->pixel_ext.num_ext_pxls_left[i] =
+		pixel_ext->num_ext_pxls_left[i] =
 			scale_cfg->src_width[i];
 	}
 	if (!(DPU_FORMAT_IS_YUV(fmt)) && (src_h == dst_h)
@@ -660,6 +658,11 @@ static void _dpu_plane_setup_scaler(struct 
dpu_plane *pdpu,
 		struct dpu_hw_pipe_cfg *pipe_cfg)
 {
 	const struct drm_format_info *info = 
drm_format_info(fmt->base.pixel_format);
+	struct dpu_hw_scaler3_cfg scaler3_cfg;
+	struct dpu_hw_pixel_ext pixel_ext;
+
+	memset(&scaler3_cfg, 0, sizeof(scaler3_cfg));
+	memset(&pixel_ext, 0, sizeof(pixel_ext));

 	/* don't chroma subsample if decimating */
 	/* update scaler. calculate default config for QSEED3 */
@@ -668,8 +671,23 @@ static void _dpu_plane_setup_scaler(struct 
dpu_plane *pdpu,
 			drm_rect_height(&pipe_cfg->src_rect),
 			drm_rect_width(&pipe_cfg->dst_rect),
 			drm_rect_height(&pipe_cfg->dst_rect),
-			&pstate->scaler3_cfg, fmt,
+			&scaler3_cfg, &pixel_ext, fmt,
 			info->hsub, info->vsub);
+
+	if (pdpu->pipe_hw->ops.setup_pe)
+		pdpu->pipe_hw->ops.setup_pe(pdpu->pipe_hw,
+				&pixel_ext);
+
+	/**
+	 * when programmed in multirect mode, scalar block will be
+	 * bypassed. Still we need to update alpha and bitwidth
+	 * ONLY for RECT0
+	 */
+	if (pdpu->pipe_hw->ops.setup_scaler &&
+			pstate->multirect_index != DPU_SSPP_RECT_1)
+		pdpu->pipe_hw->ops.setup_scaler(pdpu->pipe_hw,
+				pipe_cfg, &pixel_ext,
+				&scaler3_cfg);
 }

 /**
@@ -710,7 +728,6 @@ static int _dpu_plane_color_fill(struct dpu_plane 
*pdpu,
 			drm_rect_width(&pipe_cfg.dst_rect);
 		pipe_cfg.src_rect.y2 =
 			drm_rect_height(&pipe_cfg.dst_rect);
-		_dpu_plane_setup_scaler(pdpu, pstate, fmt, true, &pipe_cfg);

 		if (pdpu->pipe_hw->ops.setup_format)
 			pdpu->pipe_hw->ops.setup_format(pdpu->pipe_hw,
@@ -722,15 +739,7 @@ static int _dpu_plane_color_fill(struct dpu_plane 
*pdpu,
 					&pipe_cfg,
 					pstate->multirect_index);

-		if (pdpu->pipe_hw->ops.setup_pe)
-			pdpu->pipe_hw->ops.setup_pe(pdpu->pipe_hw,
-					&pstate->pixel_ext);
-
-		if (pdpu->pipe_hw->ops.setup_scaler &&
-				pstate->multirect_index != DPU_SSPP_RECT_1)
-			pdpu->pipe_hw->ops.setup_scaler(pdpu->pipe_hw,
-					&pipe_cfg, &pstate->pixel_ext,
-					&pstate->scaler3_cfg);
+		_dpu_plane_setup_scaler(pdpu, pstate, fmt, true, &pipe_cfg);
 	}

 	return 0;
@@ -1122,8 +1131,6 @@ static void dpu_plane_sspp_atomic_update(struct
drm_plane *plane)

 	pipe_cfg.dst_rect = state->dst;

-	_dpu_plane_setup_scaler(pdpu, pstate, fmt, false, &pipe_cfg);
-
 	/* override for color fill */
 	if (pdpu->color_fill & DPU_PLANE_COLOR_FILL_FLAG) {
 		/* skip remaining processing on color fill */
@@ -1136,21 +1143,7 @@ static void dpu_plane_sspp_atomic_update(struct
drm_plane *plane)
 				pstate->multirect_index);
 	}

-	if (pdpu->pipe_hw->ops.setup_pe &&
-			(pstate->multirect_index != DPU_SSPP_RECT_1))
-		pdpu->pipe_hw->ops.setup_pe(pdpu->pipe_hw,
-				&pstate->pixel_ext);
-
-	/**
-	 * when programmed in multirect mode, scalar block will be
-	 * bypassed. Still we need to update alpha and bitwidth
-	 * ONLY for RECT0
-	 */
-	if (pdpu->pipe_hw->ops.setup_scaler &&
-			pstate->multirect_index != DPU_SSPP_RECT_1)
-		pdpu->pipe_hw->ops.setup_scaler(pdpu->pipe_hw,
-				&pipe_cfg, &pstate->pixel_ext,
-				&pstate->scaler3_cfg);
+	_dpu_plane_setup_scaler(pdpu, pstate, fmt, false, &pipe_cfg);

 	if (pdpu->pipe_hw->ops.setup_multirect)
 		pdpu->pipe_hw->ops.setup_multirect(
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
index 34e03ac05f4a..087194be3c22 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
@@ -23,8 +23,6 @@
  * @multirect_index: index of the rectangle of SSPP
  * @multirect_mode: parallel or time multiplex multirect mode
  * @pending:	whether the current update is still pending
- * @scaler3_cfg: configuration data for scaler3
- * @pixel_ext: configuration data for pixel extensions
  * @cdp_cfg:	CDP configuration
  * @plane_fetch_bw: calculated BW per plane
  * @plane_clk: calculated clk per plane
@@ -38,10 +36,6 @@ struct dpu_plane_state {
 	uint32_t multirect_mode;
 	bool pending;

-	/* scaler configuration */
-	struct dpu_hw_scaler3_cfg scaler3_cfg;
-	struct dpu_hw_pixel_ext pixel_ext;
-
 	struct dpu_hw_pipe_cdp_cfg cdp_cfg;
 	u64 plane_fetch_bw;
 	u64 plane_clk;






