[PATCH v11 30/56] media: ti: Use queue min_buffers_needed field to set the min number of buffers

Benjamin Gaignard
2023-10-12T11:47:07Z

When queue min_buffers_needed field is correctly set vb2 queue_setup()
does take care of it and we can remove the checks from drivers.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
---
drivers/media/platform/ti/am437x/am437x-vpfe.c | 7 ++-----
drivers/media/platform/ti/cal/cal-video.c | 5 +----
drivers/media/platform/ti/davinci/vpif_capture.c | 5 +----
drivers/media/platform/ti/davinci/vpif_display.c | 5 +----
drivers/media/platform/ti/omap/omap_vout.c | 5 +++--
5 files changed, 8 insertions(+), 19 deletions(-)

diff --git a/drivers/media/platform/ti/am437x/am437x-vpfe.c b/drivers/media/platform/ti/am437x/am437x-vpfe.c
index 5fa2ea9025d9..80a74ee59bb9 100644
--- a/drivers/media/platform/ti/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/ti/am437x/am437x-vpfe.c
@@ -1772,9 +1772,6 @@ static int vpfe_queue_setup(struct vb2_queue *vq,
struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
unsigned size = vpfe->fmt.fmt.pix.sizeimage;

- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
-
if (*nplanes) {
if (sizes[0] < size)
return -EINVAL;
@@ -1785,7 +1782,7 @@ static int vpfe_queue_setup(struct vb2_queue *vq,
sizes[0] = size;

vpfe_dbg(1, vpfe,
- "nbuffers=%d, size=%u\n", *nbuffers, sizes[0]);
+ "nbuffers=%u, size=%u\n", vb2_get_num_buffers(vq), sizes[0]);

/* Calculate field offset */
vpfe_calculate_offsets(vpfe);
@@ -2233,7 +2230,7 @@ static int vpfe_probe_complete(struct vpfe_device *vpfe)
q->buf_struct_size = sizeof(struct vpfe_cap_buffer);
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->lock = &vpfe->lock;
- q->min_buffers_needed = 1;
+ q->min_buffers_needed = 3;
q->dev = vpfe->pdev;

err = vb2_queue_init(q);
diff --git a/drivers/media/platform/ti/cal/cal-video.c b/drivers/media/platform/ti/cal/cal-video.c
index a8abcd0fee17..924465b37e5f 100644
--- a/drivers/media/platform/ti/cal/cal-video.c
+++ b/drivers/media/platform/ti/cal/cal-video.c
@@ -604,9 +604,6 @@ static int cal_queue_setup(struct vb2_queue *vq,
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;

- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
-
if (*nplanes) {
if (sizes[0] < size)
return -EINVAL;
@@ -616,7 +613,7 @@ static int cal_queue_setup(struct vb2_queue *vq,
*nplanes = 1;
sizes[0] = size;

- ctx_dbg(3, ctx, "nbuffers=%d, size=%d\n", *nbuffers, sizes[0]);
+ ctx_dbg(3, ctx, "nbuffers=%d, size=%d\n", vb2_get_num_buffers(vq), sizes[0]);

return 0;
}
diff --git a/drivers/media/platform/ti/davinci/vpif_capture.c b/drivers/media/platform/ti/davinci/vpif_capture.c
index 99fae8830c41..8a4cc62cf562 100644
--- a/drivers/media/platform/ti/davinci/vpif_capture.c
+++ b/drivers/media/platform/ti/davinci/vpif_capture.c
@@ -122,9 +122,6 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
size = sizes[0];
}

- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
-
*nplanes = 1;
sizes[0] = size;

@@ -1428,7 +1425,7 @@ static int vpif_probe_complete(void)
q->mem_ops = &vb2_dma_contig_memops;
q->buf_struct_size = sizeof(struct vpif_cap_buffer);
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- q->min_buffers_needed = 1;
+ q->min_buffers_needed = 3;
q->lock = &common->lock;
q->dev = vpif_dev;

diff --git a/drivers/media/platform/ti/davinci/vpif_display.c b/drivers/media/platform/ti/davinci/vpif_display.c
index f8ec2991c667..6fc32314cf9c 100644
--- a/drivers/media/platform/ti/davinci/vpif_display.c
+++ b/drivers/media/platform/ti/davinci/vpif_display.c
@@ -122,9 +122,6 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
size = sizes[0];
}

- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
-
*nplanes = 1;
sizes[0] = size;

@@ -1168,7 +1165,7 @@ static int vpif_probe_complete(void)
q->mem_ops = &vb2_dma_contig_memops;
q->buf_struct_size = sizeof(struct vpif_disp_buffer);
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- q->min_buffers_needed = 1;
+ q->min_buffers_needed = 3;
q->lock = &common->lock;
q->dev = vpif_dev;
err = vb2_queue_init(q);
diff --git a/drivers/media/platform/ti/omap/omap_vout.c b/drivers/media/platform/ti/omap/omap_vout.c
index 4143274089c3..72ce903717d3 100644
--- a/drivers/media/platform/ti/omap/omap_vout.c
+++ b/drivers/media/platform/ti/omap/omap_vout.c
@@ -944,10 +944,11 @@ static int omap_vout_vb2_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct omap_vout_device *vout = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
int size = vout->pix.sizeimage;

- if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
- *nbufs = VRFB_NUM_BUFS - vq->num_buffers;
+ if (is_rotation_enabled(vout) && q_num_bufs + *nbufs > VRFB_NUM_BUFS) {
+ *nbufs = VRFB_NUM_BUFS - q_num_bufs;
if (*nbufs == 0)
return -EINVAL;
}
--
2.39.2