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[media] media: platform: pxa_camera: add buffer sequencing 

Add sequence numbers to completed buffers.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Robert Jarzmik 2016-09-06 06:04:18 -03:00 committed by Mauro Carvalho Chehab
parent 295ab497d6
commit 61634976a9
1 changed files with 5 additions and 0 deletions
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5
drivers/media/platform/soc_camera/pxa_camera.c
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@ -223,6 +223,7 @@ struct pxa_camera_dev {
struct list_head capture;
spinlock_t lock;
unsigned int buf_sequence;
struct pxa_buffer *active;
struct tasklet_struct task_eof;
@ -423,10 +424,13 @@ static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev,
struct pxa_buffer *buf)
{
struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
/* _init is used to debug races, see comment in pxa_camera_reqbufs() */
list_del_init(&buf->queue);
vb->timestamp = ktime_get_ns();
vbuf->sequence = pcdev->buf_sequence++;
vbuf->field = V4L2_FIELD_NONE;
vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
dev_dbg(pcdev_to_dev(pcdev), "%s dequeud buffer (buf=0x%p)\n",
__func__, buf);
@ -1022,6 +1026,7 @@ static int pxac_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
dev_dbg(pcdev_to_dev(pcdev), "%s(count=%d) active=%p\n",
__func__, count, pcdev->active);
pcdev->buf_sequence = 0;
if (!pcdev->active)
pxa_camera_start_capture(pcdev);