drm/msm/dpu: rework plane CSC setting

Rework the code flushing CSC settings for the plane. Separate out the
pipe and pipe_cfg as a preparation for r_pipe support.
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/527347/
Link: https://lore.kernel.org/r/20230316161653.4106395-25-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

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

@@ -577,29 +577,19 @@ static const struct dpu_csc_cfg dpu_csc10_YUV2RGB_601L = {
 	{ 0x00, 0x3ff, 0x00, 0x3ff, 0x00, 0x3ff,},
 };
 
-static const struct dpu_csc_cfg *_dpu_plane_get_csc(struct dpu_plane *pdpu, const struct dpu_format *fmt)
+static const struct dpu_csc_cfg *_dpu_plane_get_csc(struct dpu_sw_pipe *pipe,
+						    const struct dpu_format *fmt)
 {
-	struct dpu_plane_state *pstate = to_dpu_plane_state(pdpu->base.state);
 	const struct dpu_csc_cfg *csc_ptr;
 
-	if (!pdpu) {
-		DPU_ERROR("invalid plane\n");
-		return NULL;
-	}
-
 	if (!DPU_FORMAT_IS_YUV(fmt))
 		return NULL;
 
-	if (BIT(DPU_SSPP_CSC_10BIT) & pstate->pipe.sspp->cap->features)
+	if (BIT(DPU_SSPP_CSC_10BIT) & pipe->sspp->cap->features)
 		csc_ptr = &dpu_csc10_YUV2RGB_601L;
 	else
 		csc_ptr = &dpu_csc_YUV2RGB_601L;
 
-	DPU_DEBUG_PLANE(pdpu, "using 0x%X 0x%X 0x%X...\n",
-			csc_ptr->csc_mv[0],
-			csc_ptr->csc_mv[1],
-			csc_ptr->csc_mv[2]);
-
 	return csc_ptr;
 }
 
@@ -1052,6 +1042,28 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
 	return 0;
 }
 
+static void dpu_plane_flush_csc(struct dpu_plane *pdpu, struct dpu_sw_pipe *pipe)
+{
+	const struct dpu_format *format =
+		to_dpu_format(msm_framebuffer_format(pdpu->base.state->fb));
+	const struct dpu_csc_cfg *csc_ptr;
+
+	if (!pipe->sspp || !pipe->sspp->ops.setup_csc)
+		return;
+
+	csc_ptr = _dpu_plane_get_csc(pipe, format);
+	if (!csc_ptr)
+		return;
+
+	DPU_DEBUG_PLANE(pdpu, "using 0x%X 0x%X 0x%X...\n",
+			csc_ptr->csc_mv[0],
+			csc_ptr->csc_mv[1],
+			csc_ptr->csc_mv[2]);
+
+	pipe->sspp->ops.setup_csc(pipe->sspp, csc_ptr);
+
+}
+
 void dpu_plane_flush(struct drm_plane *plane)
 {
 	struct dpu_plane *pdpu;
@@ -1075,13 +1087,8 @@ void dpu_plane_flush(struct drm_plane *plane)
 	else if (pdpu->color_fill & DPU_PLANE_COLOR_FILL_FLAG)
 		/* force 100% alpha */
 		_dpu_plane_color_fill(pdpu, pdpu->color_fill, 0xFF);
-	else if (pstate->pipe.sspp && pstate->pipe.sspp->ops.setup_csc) {
-		const struct dpu_format *fmt = to_dpu_format(msm_framebuffer_format(plane->state->fb));
-		const struct dpu_csc_cfg *csc_ptr = _dpu_plane_get_csc(pdpu, fmt);
-
-		if (csc_ptr)
-			pstate->pipe.sspp->ops.setup_csc(pstate->pipe.sspp, csc_ptr);
-	}
+	else
+		dpu_plane_flush_csc(pdpu, &pstate->pipe);
 
 	/* flag h/w flush complete */
 	if (plane->state)