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| author | Baruch Siach <baruch@tkos.co.il> | 2010-07-27 09:06:10 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-10-21 01:06:17 -0200 |
| commit | 7c6b73197062180d51e9871982b083a651838992 (patch) | |
| tree | f348b952a417c1d9a4a12301159068b616d90f14 | |
| parent | 88bfd0bd7f8343c3c2ff65fe4d3fc3aff6ecca7c (diff) | |
| download | op-kernel-dev-7c6b73197062180d51e9871982b083a651838992.zip op-kernel-dev-7c6b73197062180d51e9871982b083a651838992.tar.gz | |
V4L/DVB: mx2_camera: implement forced termination of active buffer for mx25
This allows userspace to terminate a capture without waiting for the current
frame to complete.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/mx2_camera.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c index 2560e77..d7b3229 100644 --- a/drivers/media/video/mx2_camera.c +++ b/drivers/media/video/mx2_camera.c @@ -640,15 +640,27 @@ static void mx2_videobuf_release(struct videobuf_queue *vq, * Terminate only queued but inactive buffers. Active buffers are * released when they become inactive after videobuf_waiton(). * - * FIXME: implement forced termination of active buffers, so that the - * user won't get stuck in an uninterruptible state. This requires a - * specific handling for each of the three DMA types that this driver - * supports. + * FIXME: implement forced termination of active buffers for mx27 and + * mx27 eMMA, so that the user won't get stuck in an uninterruptible + * state. This requires a specific handling for each of the these DMA + * types. */ spin_lock_irqsave(&pcdev->lock, flags); if (vb->state == VIDEOBUF_QUEUED) { list_del(&vb->queue); vb->state = VIDEOBUF_ERROR; + } else if (cpu_is_mx25() && vb->state == VIDEOBUF_ACTIVE) { + if (pcdev->fb1_active == buf) { + pcdev->csicr1 &= ~CSICR1_FB1_DMA_INTEN; + writel(0, pcdev->base_csi + CSIDMASA_FB1); + pcdev->fb1_active = NULL; + } else if (pcdev->fb2_active == buf) { + pcdev->csicr1 &= ~CSICR1_FB2_DMA_INTEN; + writel(0, pcdev->base_csi + CSIDMASA_FB2); + pcdev->fb2_active = NULL; + } + writel(pcdev->csicr1, pcdev->base_csi + CSICR1); + vb->state = VIDEOBUF_ERROR; } spin_unlock_irqrestore(&pcdev->lock, flags); |
