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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2011-03-25 05:24:01 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-05-20 11:52:53 -0300 |
| commit | 08a31b960598adef6aa9430c2cab4b5ef4db1ab8 (patch) | |
| tree | cfe1e8c542d25dd171af8ef25eecea6404e604d1 /drivers/media/video/mx3_camera.c | |
| parent | 066f7867207b8e13d2062069e0ba7cb3a5bf04b2 (diff) | |
| download | kernel_samsung_smdk4412-08a31b960598adef6aa9430c2cab4b5ef4db1ab8.tar.gz kernel_samsung_smdk4412-08a31b960598adef6aa9430c2cab4b5ef4db1ab8.tar.bz2 kernel_samsung_smdk4412-08a31b960598adef6aa9430c2cab4b5ef4db1ab8.zip | |
[media] V4L: mx3_camera: implement .stop_streaming()
The .stop_streaming() videobuf2 operation has to be implemented to
guarantee, that video buffers are not written to after a STREAMOFF.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/mx3_camera.c')
| -rw-r--r-- | drivers/media/video/mx3_camera.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/media/video/mx3_camera.c b/drivers/media/video/mx3_camera.c index 502e2a40964..8630c0c9e60 100644 --- a/drivers/media/video/mx3_camera.c +++ b/drivers/media/video/mx3_camera.c @@ -400,6 +400,35 @@ static int mx3_videobuf_init(struct vb2_buffer *vb) return 0; } +static int mx3_stop_streaming(struct vb2_queue *q) +{ + struct soc_camera_device *icd = soc_camera_from_vb2q(q); + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); + struct mx3_camera_dev *mx3_cam = ici->priv; + struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; + struct dma_chan *chan; + struct mx3_camera_buffer *buf, *tmp; + unsigned long flags; + + if (ichan) { + chan = &ichan->dma_chan; + chan->device->device_control(chan, DMA_TERMINATE_ALL, 0); + } + + spin_lock_irqsave(&mx3_cam->lock, flags); + + mx3_cam->active = NULL; + + list_for_each_entry_safe(buf, tmp, &mx3_cam->capture, queue) { + buf->state = CSI_BUF_NEEDS_INIT; + list_del_init(&buf->queue); + } + + spin_unlock_irqrestore(&mx3_cam->lock, flags); + + return 0; +} + static struct vb2_ops mx3_videobuf_ops = { .queue_setup = mx3_videobuf_setup, .buf_prepare = mx3_videobuf_prepare, @@ -408,6 +437,7 @@ static struct vb2_ops mx3_videobuf_ops = { .buf_init = mx3_videobuf_init, .wait_prepare = soc_camera_unlock, .wait_finish = soc_camera_lock, + .stop_streaming = mx3_stop_streaming, }; static int mx3_camera_init_videobuf(struct vb2_queue *q, |