aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorRobert Jarzmik <robert.jarzmik@free.fr>2016-09-06 06:04:22 -0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-09-09 10:53:31 -0300
commitfcdf9bbc912516801722ee5a289f6619e3619a14 (patch)
treeb20311c2280b7099287f7e2123195b55b651736f
parentcdd657eb441ceb3b938ed0664d90ce07fbde3139 (diff)
[media] media: platform: pxa_camera: change stop_streaming semantics
Instead of the legacy behavior where it was required to wait for all video buffers to be finished by the hardware, use a cancel like strategy : as soon as the stop_streaming() call is done, abort all DMA transfers, report the already buffers as failed and return. This makes stop_streaming() more a "cancel capture" than a "wait for end of capture" semantic. 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>
-rw-r--r--drivers/media/platform/soc_camera/pxa_camera.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/media/platform/soc_camera/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c
index fb89b85f59ab..868c6ad4784c 100644
--- a/drivers/media/platform/soc_camera/pxa_camera.c
+++ b/drivers/media/platform/soc_camera/pxa_camera.c
@@ -523,7 +523,8 @@ static void pxa_camera_stop_capture(struct pxa_camera_dev *pcdev)
}
static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev,
- struct pxa_buffer *buf)
+ struct pxa_buffer *buf,
+ enum vb2_buffer_state state)
{
struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
@@ -645,7 +646,7 @@ static void pxa_camera_dma_irq(struct pxa_camera_dev *pcdev,
}
buf->active_dma &= ~act_dma;
if (!buf->active_dma) {
- pxa_camera_wakeup(pcdev, buf);
+ pxa_camera_wakeup(pcdev, buf, VB2_BUF_STATE_DONE);
pxa_camera_check_link_miss(pcdev, last_buf->cookie[chan],
last_issued);
}
@@ -1087,7 +1088,15 @@ static int pxac_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
static void pxac_vb2_stop_streaming(struct vb2_queue *vq)
{
- vb2_wait_for_all_buffers(vq);
+ struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq);
+ struct pxa_buffer *buf, *tmp;
+
+ dev_dbg(pcdev_to_dev(pcdev), "%s active=%p\n",
+ __func__, pcdev->active);
+ pxa_camera_stop_capture(pcdev);
+
+ list_for_each_entry_safe(buf, tmp, &pcdev->capture, queue)
+ pxa_camera_wakeup(pcdev, buf, VB2_BUF_STATE_ERROR);
}
static struct vb2_ops pxac_vb2_ops = {

Privacy Policy