media: renesas: vsp1: Replace vsp1_partition_window with v4l2_rect

The vsp1_partition_window structure is used to store the horizontal size
of a partition window. This is all that is currently needed, as all
partitions span the whole image vertically. The horizontal window size
is retrieved in the .configure_partition() handler from the
vsp1_partition_window structure, and the vertical window size from the
subdev state.

Accessing the subdev state in the .configure_partition() handler is
problematic in the context of moving to the V4L2 subdev active state
API, as .configure_partition() is called in non-interruptable context,
and the state lock can't be taken. To avoid this, start by storing the
vertical size in the window, replacing the custom vsp1_partition_window
structure with a v4l2_rect. Retrieving the vertical size from the window
in .configure_partition() will be done in a subsequent change.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com>

drivers/media/platform/renesas/vsp1/vsp1_entity.h

@@ -19,7 +19,6 @@ struct vsp1_dl_body;
 struct vsp1_dl_list;
 struct vsp1_pipeline;
 struct vsp1_partition;
-struct vsp1_partition_window;
 
 enum vsp1_entity_type {
 	VSP1_ENTITY_BRS,
@@ -91,7 +90,7 @@ struct vsp1_entity_operations {
 	unsigned int (*max_width)(struct vsp1_entity *, struct vsp1_pipeline *);
 	void (*partition)(struct vsp1_entity *, struct vsp1_pipeline *,
 			  struct vsp1_partition *, unsigned int,
-			  struct vsp1_partition_window *);
+			  struct v4l2_rect *);
 };
 
 struct vsp1_entity {

drivers/media/platform/renesas/vsp1/vsp1_pipe.c

@@ -459,7 +459,7 @@ void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
 static void vsp1_pipeline_propagate_partition(struct vsp1_pipeline *pipe,
 					      struct vsp1_partition *partition,
 					      unsigned int index,
-					      struct vsp1_partition_window *window)
+					      struct v4l2_rect *window)
 {
 	struct vsp1_entity *entity;
 
@@ -485,7 +485,7 @@ void vsp1_pipeline_calculate_partition(struct vsp1_pipeline *pipe,
 				       unsigned int index)
 {
 	const struct v4l2_mbus_framefmt *format;
-	struct vsp1_partition_window window;
+	struct v4l2_rect window;
 	unsigned int modulus;
 
 	/*
@@ -498,6 +498,8 @@ void vsp1_pipeline_calculate_partition(struct vsp1_pipeline *pipe,
 	/* Initialise the partition with sane starting conditions. */
 	window.left = index * div_size;
 	window.width = div_size;
+	window.top = 0;
+	window.height = format->height;
 
 	modulus = format->width % div_size;
 

drivers/media/platform/renesas/vsp1/vsp1_pipe.h

@@ -53,17 +53,6 @@ enum vsp1_pipeline_state {
 	VSP1_PIPELINE_STOPPING,
 };
 
-/*
- * struct vsp1_partition_window - Partition window coordinates
- * @left: horizontal coordinate of the partition start in pixels relative to the
- *	  left edge of the image
- * @width: partition width in pixels
- */
-struct vsp1_partition_window {
-	unsigned int left;
-	unsigned int width;
-};
-
 /*
  * struct vsp1_partition - A description of a slice for the partition algorithm
  * @rpf: The RPF partition window configuration
@@ -73,11 +62,11 @@ struct vsp1_partition_window {
  * @wpf: The WPF partition window configuration
  */
 struct vsp1_partition {
-	struct vsp1_partition_window rpf[VSP1_MAX_RPF];
-	struct vsp1_partition_window uds_sink;
-	struct vsp1_partition_window uds_source;
-	struct vsp1_partition_window sru;
-	struct vsp1_partition_window wpf;
+	struct v4l2_rect rpf[VSP1_MAX_RPF];
+	struct v4l2_rect uds_sink;
+	struct v4l2_rect uds_source;
+	struct v4l2_rect sru;
+	struct v4l2_rect wpf;
 };
 
 /*

drivers/media/platform/renesas/vsp1/vsp1_rpf.c

@@ -366,7 +366,7 @@ static void rpf_partition(struct vsp1_entity *entity,
 			  struct vsp1_pipeline *pipe,
 			  struct vsp1_partition *partition,
 			  unsigned int partition_idx,
-			  struct vsp1_partition_window *window)
+			  struct v4l2_rect *window)
 {
 	struct vsp1_rwpf *rpf = to_rwpf(&entity->subdev);
 

drivers/media/platform/renesas/vsp1/vsp1_sru.c

@@ -323,7 +323,7 @@ static void sru_partition(struct vsp1_entity *entity,
 			  struct vsp1_pipeline *pipe,
 			  struct vsp1_partition *partition,
 			  unsigned int partition_idx,
-			  struct vsp1_partition_window *window)
+			  struct v4l2_rect *window)
 {
 	struct vsp1_sru *sru = to_sru(&entity->subdev);
 	struct v4l2_mbus_framefmt *input;
@@ -337,6 +337,8 @@ static void sru_partition(struct vsp1_entity *entity,
 	if (input->width != output->width) {
 		window->width /= 2;
 		window->left /= 2;
+		window->height /= 2;
+		window->top /= 2;
 	}
 
 	partition->sru = *window;

drivers/media/platform/renesas/vsp1/vsp1_uds.c

@@ -363,16 +363,12 @@ static void uds_partition(struct vsp1_entity *entity,
 			  struct vsp1_pipeline *pipe,
 			  struct vsp1_partition *partition,
 			  unsigned int partition_idx,
-			  struct vsp1_partition_window *window)
+			  struct v4l2_rect *window)
 {
 	struct vsp1_uds *uds = to_uds(&entity->subdev);
 	const struct v4l2_mbus_framefmt *output;
 	const struct v4l2_mbus_framefmt *input;
 
-	/* Initialise the partition state. */
-	partition->uds_sink = *window;
-	partition->uds_source = *window;
-
 	input = v4l2_subdev_state_get_format(uds->entity.state, UDS_PAD_SINK);
 	output = v4l2_subdev_state_get_format(uds->entity.state,
 					      UDS_PAD_SOURCE);
@@ -381,6 +377,10 @@ static void uds_partition(struct vsp1_entity *entity,
 				  / output->width;
 	partition->uds_sink.left = window->left * input->width
 				 / output->width;
+	partition->uds_sink.height = input->height;
+	partition->uds_sink.top = 0;
+
+	partition->uds_source = *window;
 
 	*window = partition->uds_sink;
 }

drivers/media/platform/renesas/vsp1/vsp1_wpf.c

@@ -515,7 +515,7 @@ static void wpf_partition(struct vsp1_entity *entity,
 			  struct vsp1_pipeline *pipe,
 			  struct vsp1_partition *partition,
 			  unsigned int partition_idx,
-			  struct vsp1_partition_window *window)
+			  struct v4l2_rect *window)
 {
 	partition->wpf = *window;
 }