drm/msm/dpu: make _dpu_plane_calc_clk accept mode directly

Rework bandwidth/clock calculation functions to use mode directly rather
than fetching it through the plane data.
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Tested-by: Abhinav Kumar <quic_abhinavk@quicinc.com> # sc7280
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/527344/
Link: https://lore.kernel.org/r/20230316161653.4106395-20-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

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

@@ -128,20 +128,19 @@ static struct dpu_kms *_dpu_plane_get_kms(struct drm_plane *plane)
 
 /**
  * _dpu_plane_calc_bw - calculate bandwidth required for a plane
- * @plane: Pointer to drm plane.
+ * @catalog: Points to dpu catalog structure
  * @fmt: Pointer to source buffer format
+ * @mode: Pointer to drm display mode
  * @pipe_cfg: Pointer to pipe configuration
  * Result: Updates calculated bandwidth in the plane state.
  * BW Equation: src_w * src_h * bpp * fps * (v_total / v_dest)
  * Prefill BW Equation: line src bytes * line_time
  */
-static void _dpu_plane_calc_bw(struct drm_plane *plane,
+static u64 _dpu_plane_calc_bw(const struct dpu_mdss_cfg *catalog,
 	const struct dpu_format *fmt,
+	const struct drm_display_mode *mode,
 	struct dpu_sw_pipe_cfg *pipe_cfg)
 {
-	struct dpu_plane_state *pstate;
-	struct drm_display_mode *mode;
-	struct dpu_kms *dpu_kms = _dpu_plane_get_kms(plane);
 	int src_width, src_height, dst_height, fps;
 	u64 plane_prefill_bw;
 	u64 plane_bw;
@@ -149,9 +148,6 @@ static void _dpu_plane_calc_bw(struct drm_plane *plane,
 	u64 scale_factor;
 	int vbp, vpw, vfp;
 
-	pstate = to_dpu_plane_state(plane->state);
-	mode = &plane->state->crtc->mode;
-
 	src_width = drm_rect_width(&pipe_cfg->src_rect);
 	src_height = drm_rect_height(&pipe_cfg->src_rect);
 	dst_height = drm_rect_height(&pipe_cfg->dst_rect);
@@ -159,7 +155,7 @@ static void _dpu_plane_calc_bw(struct drm_plane *plane,
 	vbp = mode->vtotal - mode->vsync_end;
 	vpw = mode->vsync_end - mode->vsync_start;
 	vfp = mode->vsync_start - mode->vdisplay;
-	hw_latency_lines =  dpu_kms->catalog->perf->min_prefill_lines;
+	hw_latency_lines =  catalog->perf->min_prefill_lines;
 	scale_factor = src_height > dst_height ?
 		mult_frac(src_height, 1, dst_height) : 1;
 
@@ -179,37 +175,36 @@ static void _dpu_plane_calc_bw(struct drm_plane *plane,
 		do_div(plane_prefill_bw, hw_latency_lines);
 
 
-	pstate->plane_fetch_bw = max(plane_bw, plane_prefill_bw);
+	return max(plane_bw, plane_prefill_bw);
 }
 
 /**
  * _dpu_plane_calc_clk - calculate clock required for a plane
- * @plane: Pointer to drm plane.
+ * @mode: Pointer to drm display mode
  * @pipe_cfg: Pointer to pipe configuration
  * Result: Updates calculated clock in the plane state.
  * Clock equation: dst_w * v_total * fps * (src_h / dst_h)
  */
-static void _dpu_plane_calc_clk(struct drm_plane *plane, struct dpu_sw_pipe_cfg *pipe_cfg)
+static u64 _dpu_plane_calc_clk(const struct drm_display_mode *mode,
+		struct dpu_sw_pipe_cfg *pipe_cfg)
 {
-	struct dpu_plane_state *pstate;
-	struct drm_display_mode *mode;
 	int dst_width, src_height, dst_height, fps;
-
-	pstate = to_dpu_plane_state(plane->state);
-	mode = &plane->state->crtc->mode;
+	u64 plane_clk;
 
 	src_height = drm_rect_height(&pipe_cfg->src_rect);
 	dst_width = drm_rect_width(&pipe_cfg->dst_rect);
 	dst_height = drm_rect_height(&pipe_cfg->dst_rect);
 	fps = drm_mode_vrefresh(mode);
 
-	pstate->plane_clk =
+	plane_clk =
 		dst_width * mode->vtotal * fps;
 
 	if (src_height > dst_height) {
-		pstate->plane_clk *= src_height;
-		do_div(pstate->plane_clk, dst_height);
+		plane_clk *= src_height;
+		do_div(plane_clk, dst_height);
 	}
+
+	return plane_clk;
 }
 
 /**
@@ -1220,9 +1215,9 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane *plane)
 		_dpu_plane_set_qos_remap(plane, pipe);
 	}
 
-	_dpu_plane_calc_bw(plane, fmt, &pipe_cfg);
+	pstate->plane_fetch_bw = _dpu_plane_calc_bw(pdpu->catalog, fmt, &crtc->mode, &pipe_cfg);
 
-	_dpu_plane_calc_clk(plane, &pipe_cfg);
+	pstate->plane_clk = _dpu_plane_calc_clk(&crtc->mode, &pipe_cfg);
 }
 
 static void _dpu_plane_atomic_disable(struct drm_plane *plane)