[PATCH v21.1 3/9] media: test-drivers: Set REQBUFS minimum number of buffers

[Benjamin Gaignard]

Instead of using 'min_queued_buffers' field to specify the
minimum number of buffers to be allocated when calling REQBUF
use 'min_reqbufs_allocation' field which is dedicated to this
purpose.

Change the minimum requested buffers to 2 for vivid-meta-out
and vivid-touch-cap drivers when creating the queues.
That allows to remove code which prohibe to allocate only
one buffer in their respective queue setup functions.

While at it rename vivid_create_queue() parameter.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard at collabora.com>
---
version 21.1:
- Change min requested buffers for vivid-meta-out and vivid-touch-cap.
- Remove useless call in their queue setup functions.

 drivers/media/test-drivers/vimc/vimc-capture.c     | 2 +-
 drivers/media/test-drivers/vivid/vivid-core.c      | 8 ++++----
 drivers/media/test-drivers/vivid/vivid-meta-out.c  | 4 ----
 drivers/media/test-drivers/vivid/vivid-touch-cap.c | 4 ----
 4 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/drivers/media/test-drivers/vimc/vimc-capture.c b/drivers/media/test-drivers/vimc/vimc-capture.c
index 2a2d19d23bab..97693561f1e4 100644
--- a/drivers/media/test-drivers/vimc/vimc-capture.c
+++ b/drivers/media/test-drivers/vimc/vimc-capture.c
@@ -432,7 +432,7 @@ static struct vimc_ent_device *vimc_capture_add(struct vimc_device *vimc,
 	q->mem_ops = vimc_allocator == VIMC_ALLOCATOR_DMA_CONTIG
 		   ? &vb2_dma_contig_memops : &vb2_vmalloc_memops;
 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	q->min_queued_buffers = 2;
+	q->min_reqbufs_allocation = 2;
 	q->lock = &vcapture->lock;
 	q->dev = v4l2_dev->dev;
 
diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
index 159c72cbb5bf..e2d4f10003f3 100644
--- a/drivers/media/test-drivers/vivid/vivid-core.c
+++ b/drivers/media/test-drivers/vivid/vivid-core.c
@@ -861,7 +861,7 @@ static const struct media_device_ops vivid_media_ops = {
 static int vivid_create_queue(struct vivid_dev *dev,
 			      struct vb2_queue *q,
 			      u32 buf_type,
-			      unsigned int min_queued_buffers,
+			      unsigned int min_reqbufs_allocation,
 			      const struct vb2_ops *ops)
 {
 	if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->multiplanar)
@@ -898,7 +898,7 @@ static int vivid_create_queue(struct vivid_dev *dev,
 	q->mem_ops = allocators[dev->inst] == 1 ? &vb2_dma_contig_memops :
 						  &vb2_vmalloc_memops;
 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	q->min_queued_buffers = supports_requests[dev->inst] ? 0 : min_queued_buffers;
+	q->min_reqbufs_allocation = min_reqbufs_allocation;
 	q->lock = &dev->mutex;
 	q->dev = dev->v4l2_dev.dev;
 	q->supports_requests = supports_requests[dev->inst];
@@ -1364,7 +1364,7 @@ static int vivid_create_queues(struct vivid_dev *dev)
 	if (dev->has_meta_out) {
 		/* initialize meta_out queue */
 		ret = vivid_create_queue(dev, &dev->vb_meta_out_q,
-					 V4L2_BUF_TYPE_META_OUTPUT, 1,
+					 V4L2_BUF_TYPE_META_OUTPUT, 2,
 					 &vivid_meta_out_qops);
 		if (ret)
 			return ret;
@@ -1373,7 +1373,7 @@ static int vivid_create_queues(struct vivid_dev *dev)
 	if (dev->has_touch_cap) {
 		/* initialize touch_cap queue */
 		ret = vivid_create_queue(dev, &dev->vb_touch_cap_q,
-					 V4L2_BUF_TYPE_VIDEO_CAPTURE, 1,
+					 V4L2_BUF_TYPE_VIDEO_CAPTURE, 2,
 					 &vivid_touch_cap_qops);
 		if (ret)
 			return ret;
diff --git a/drivers/media/test-drivers/vivid/vivid-meta-out.c b/drivers/media/test-drivers/vivid/vivid-meta-out.c
index 4a569a6e58be..82ab3b26914e 100644
--- a/drivers/media/test-drivers/vivid/vivid-meta-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-meta-out.c
@@ -18,7 +18,6 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 				struct device *alloc_devs[])
 {
 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
-	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 	unsigned int size =  sizeof(struct vivid_meta_out_buf);
 
 	if (!vivid_is_webcam(dev))
@@ -31,9 +30,6 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 		sizes[0] = size;
 	}
 
-	if (q_num_bufs + *nbuffers < 2)
-		*nbuffers = 2 - q_num_bufs;
-
 	*nplanes = 1;
 	return 0;
 }
diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
index 4b3c6ea0afde..3888c21b4d0c 100644
--- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
@@ -13,7 +13,6 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 				 struct device *alloc_devs[])
 {
 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
-	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 	struct v4l2_pix_format *f = &dev->tch_format;
 	unsigned int size = f->sizeimage;
 
@@ -24,9 +23,6 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 		sizes[0] = size;
 	}
 
-	if (q_num_bufs + *nbuffers < 2)
-		*nbuffers = 2 - q_num_bufs;
-
 	*nplanes = 1;
 	return 0;
 }
-- 
2.40.1