[PATCH v4 1/4] media: vsp1: Define partition algorithm helper

[Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>]

Provide a helper to describe when the partition algorithm is in use on a
given pipeline. This improves readability to the purpose of the code,
rather than obtusely checking the number of partitions.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

---
v4:
 - Fix periods at the end of comments (adjacent comment included)

 drivers/media/platform/vsp1/vsp1_pipe.c  | 10 +++++++++-
 drivers/media/platform/vsp1/vsp1_pipe.h  |  1 +
 drivers/media/platform/vsp1/vsp1_rpf.c   |  2 +-
 drivers/media/platform/vsp1/vsp1_video.c |  2 +-
 drivers/media/platform/vsp1/vsp1_wpf.c   |  2 +-
 5 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/vsp1/vsp1_pipe.c b/drivers/media/platform/vsp1/vsp1_pipe.c
index f72ac01c21ea..e8a86771bde8 100644
--- a/drivers/media/platform/vsp1/vsp1_pipe.c
+++ b/drivers/media/platform/vsp1/vsp1_pipe.c
@@ -427,7 +427,15 @@ void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
 }
 
 /*
- * Propagate the partition calculations through the pipeline
+ * Identify if the partition algorithm is in use or not.
+ */
+bool vsp1_pipeline_partitioned(struct vsp1_pipeline *pipe)
+{
+	return pipe->partitions > 1;
+}
+
+/*
+ * Propagate the partition calculations through the pipeline.
  *
  * Work backwards through the pipe, allowing each entity to update the partition
  * parameters based on its configuration, and the entity connected to its
diff --git a/drivers/media/platform/vsp1/vsp1_pipe.h b/drivers/media/platform/vsp1/vsp1_pipe.h
index ae646c9ef337..dd8b2cdc6452 100644
--- a/drivers/media/platform/vsp1/vsp1_pipe.h
+++ b/drivers/media/platform/vsp1/vsp1_pipe.h
@@ -164,6 +164,7 @@ void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
 				   struct vsp1_dl_body *dlb,
 				   unsigned int alpha);
 
+bool vsp1_pipeline_partitioned(struct vsp1_pipeline *pipe);
 void vsp1_pipeline_propagate_partition(struct vsp1_pipeline *pipe,
 				       struct vsp1_partition *partition,
 				       unsigned int index,
diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c
index 616afa7e165f..ef9bf5dd55a0 100644
--- a/drivers/media/platform/vsp1/vsp1_rpf.c
+++ b/drivers/media/platform/vsp1/vsp1_rpf.c
@@ -269,7 +269,7 @@ static void rpf_configure_partition(struct vsp1_entity *entity,
 	 * matching the expected partition window. Only 'left' and
 	 * 'width' need to be adjusted.
 	 */
-	if (pipe->partitions > 1) {
+	if (vsp1_pipeline_partitioned(pipe)) {
 		crop.width = pipe->partition->rpf.width;
 		crop.left += pipe->partition->rpf.left;
 	}
diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c
index 7ceaf3222145..ee2fb8261a6a 100644
--- a/drivers/media/platform/vsp1/vsp1_video.c
+++ b/drivers/media/platform/vsp1/vsp1_video.c
@@ -201,7 +201,7 @@ static void vsp1_video_calculate_partition(struct vsp1_pipeline *pipe,
 					    RWPF_PAD_SINK);
 
 	/* A single partition simply processes the output size in full. */
-	if (pipe->partitions <= 1) {
+	if (!vsp1_pipeline_partitioned(pipe)) {
 		window.left = 0;
 		window.width = format->width;
 
diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c
index 32bb207b2007..9e8dbf99878b 100644
--- a/drivers/media/platform/vsp1/vsp1_wpf.c
+++ b/drivers/media/platform/vsp1/vsp1_wpf.c
@@ -376,7 +376,7 @@ static void wpf_configure_partition(struct vsp1_entity *entity,
 	 * Cropping. The partition algorithm can split the image into
 	 * multiple slices.
 	 */
-	if (pipe->partitions > 1)
+	if (vsp1_pipeline_partitioned(pipe))
 		width = pipe->partition->wpf.width;
 
 	vsp1_wpf_write(wpf, dlb, VI6_WPF_HSZCLIP, VI6_WPF_SZCLIP_EN |
-- 
2.20.1