[PATCH 7/8] media: rkisp1: Add struct rkisp1_params_buffer

[Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>]

Create the 'struct rkisp1_params_buffer' type that wraps a
vb2_v4l2_buffer and contain a pointer to an optional copy of
the parameters buffer that will be used to copy the user-provided
configuration buffer in the following patches.

Replace usage of 'struct rkisp1_buffer' with 'struct
rkisp1_params_buffer' in rkisp1-params.c to prepare for that.

Signed-off-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
---
 .../platform/rockchip/rkisp1/rkisp1-common.h  | 16 +++++++++++++-
 .../platform/rockchip/rkisp1/rkisp1-params.c  | 21 ++++++++++---------
 2 files changed, 26 insertions(+), 11 deletions(-)

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
index f9df5ed96c98..3118f1974246 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
@@ -232,7 +232,7 @@ struct rkisp1_vdev_node {
 
 /*
  * struct rkisp1_buffer - A container for the vb2 buffers used by the video devices:
- *			  params, stats, mainpath, selfpath
+ *			  stats, mainpath, selfpath
  *
  * @vb:		vb2 buffer
  * @queue:	entry of the buffer in the queue
@@ -244,6 +244,20 @@ struct rkisp1_buffer {
 	dma_addr_t buff_addr[VIDEO_MAX_PLANES];
 };
 
+/*
+ * struct rkisp1_params_buffer - A container for the vb2 buffers used by the
+ *				 params video device
+ *
+ * @vb:		vb2 buffer
+ * @queue:	entry of the buffer in the queue
+ * cfg:		scratch buffer used for the extensible parameters format
+ */
+struct rkisp1_params_buffer {
+	struct vb2_v4l2_buffer vb;
+	struct list_head queue;
+	struct rkisp1_ext_params_cfg *cfg;
+};
+
 /*
  * struct rkisp1_dummy_buffer - A buffer to write the next frame to in case
  *				there are no vb2 buffers available.
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
index c081fd490b2b..4adaf084ce6e 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
@@ -2016,20 +2016,21 @@ static int rkisp1_ext_params_lsc_config(struct rkisp1_params *params,
 }
 
 static bool rkisp1_params_get_buffer(struct rkisp1_params *params,
-				     struct rkisp1_buffer **buf,
+				     struct rkisp1_params_buffer **buf,
 				     void **cfg)
 {
 	if (list_empty(&params->params))
 		return false;
 
-	*buf = list_first_entry(&params->params, struct rkisp1_buffer, queue);
+	*buf = list_first_entry(&params->params, struct rkisp1_params_buffer,
+				queue);
 	*cfg = vb2_plane_vaddr(&(*buf)->vb.vb2_buf, 0);
 
 	return true;
 }
 
 static void rkisp1_params_complete_buffer(struct rkisp1_params *params,
-					  struct rkisp1_buffer *buf,
+					  struct rkisp1_params_buffer *buf,
 					  unsigned int frame_sequence,
 					  enum vb2_buffer_state state)
 {
@@ -2042,7 +2043,7 @@ static void rkisp1_params_complete_buffer(struct rkisp1_params *params,
 void rkisp1_params_isr(struct rkisp1_device *rkisp1)
 {
 	struct rkisp1_params *params = &rkisp1->params;
-	struct rkisp1_buffer *buf;
+	struct rkisp1_params_buffer *buf;
 	int ret = 0;
 	void *cfg;
 
@@ -2129,7 +2130,7 @@ int rkisp1_params_pre_configure(struct rkisp1_params *params,
 				enum v4l2_ycbcr_encoding ycbcr_encoding)
 {
 	struct rkisp1_cif_isp_hst_config hst = rkisp1_hst_params_default_config;
-	struct rkisp1_buffer *buf;
+	struct rkisp1_params_buffer *buf;
 	int ret = 0;
 	void *cfg;
 
@@ -2193,7 +2194,7 @@ int rkisp1_params_pre_configure(struct rkisp1_params *params,
 
 int rkisp1_params_post_configure(struct rkisp1_params *params)
 {
-	struct rkisp1_buffer *buf;
+	struct rkisp1_params_buffer *buf;
 	int ret = 0;
 	void *cfg;
 
@@ -2409,8 +2410,8 @@ static int rkisp1_params_vb2_queue_setup(struct vb2_queue *vq,
 static void rkisp1_params_vb2_buf_queue(struct vb2_buffer *vb)
 {
 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
-	struct rkisp1_buffer *params_buf =
-		container_of(vbuf, struct rkisp1_buffer, vb);
+	struct rkisp1_params_buffer *params_buf =
+		container_of(vbuf, struct rkisp1_params_buffer, vb);
 	struct vb2_queue *vq = vb->vb2_queue;
 	struct rkisp1_params *params = vq->drv_priv;
 
@@ -2436,7 +2437,7 @@ static int rkisp1_params_vb2_buf_prepare(struct vb2_buffer *vb)
 static void rkisp1_params_vb2_stop_streaming(struct vb2_queue *vq)
 {
 	struct rkisp1_params *params = vq->drv_priv;
-	struct rkisp1_buffer *buf;
+	struct rkisp1_params_buffer *buf;
 	LIST_HEAD(tmp_list);
 
 	/*
@@ -2482,7 +2483,7 @@ static int rkisp1_params_init_vb2_queue(struct vb2_queue *q,
 	q->drv_priv = params;
 	q->ops = &rkisp1_params_vb2_ops;
 	q->mem_ops = &vb2_vmalloc_memops;
-	q->buf_struct_size = sizeof(struct rkisp1_buffer);
+	q->buf_struct_size = sizeof(struct rkisp1_params_buffer);
 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 	q->lock = &node->vlock;
 
-- 
2.45.1