diff options
| author |   Magnus Damm <damm@igel.co.jp> | 2008-10-16 19:51:20 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-17 17:26:10 -0300 |
| commit | 51354cc3e0c233803505ac8842c3683f42ff42bb (patch) | |
| tree | 80aa7f1aedf79deed95a99dfe94d0cd51a868f5f /drivers/media/video/sh_mobile_ceu_camera.c | |
| parent | V4L/DVB (9243): video: add byte swap to sh_mobile_ceu driver (diff) | |
| download | linux-dev-51354cc3e0c233803505ac8842c3683f42ff42bb.tar.xz linux-dev-51354cc3e0c233803505ac8842c3683f42ff42bb.zip | |
V4L/DVB (9244): video: improve sh_mobile_ceu buffer handling
This patch improves the buffer handling in the sh_mobile_ceu driver.
Instead of marking all queued buffers as VIDEOBUF_ACTIVE the code now
marks queued-but-not-active buffers as VIDEOBUF_QUEUED and buffers
involved in dma as VIDEOBUF_ACTIVE. The code is also updated with
code to cancel active buffers, thanks to Morimoto-san.
Tested-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/sh_mobile_ceu_camera.c')
| -rw-r--r-- | drivers/media/video/sh_mobile_ceu_camera.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/media/video/sh_mobile_ceu_camera.c b/drivers/media/video/sh_mobile_ceu_camera.c index fa88d382d5b5..2407607f2eff 100644 --- a/drivers/media/video/sh_mobile_ceu_camera.c +++ b/drivers/media/video/sh_mobile_ceu_camera.c @@ -165,6 +165,7 @@ static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) ceu_write(pcdev, CETCR, 0x0317f313 ^ 0x10); if (pcdev->active) { + pcdev->active->state = VIDEOBUF_ACTIVE; ceu_write(pcdev, CDAYR, videobuf_to_dma_contig(pcdev->active)); ceu_write(pcdev, CAPSR, 0x1); /* start capture */ } @@ -236,7 +237,7 @@ static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq, dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, vb, vb->baddr, vb->bsize); - vb->state = VIDEOBUF_ACTIVE; + vb->state = VIDEOBUF_QUEUED; spin_lock_irqsave(&pcdev->lock, flags); list_add_tail(&vb->queue, &pcdev->capture); @@ -323,12 +324,24 @@ static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) { struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; + unsigned long flags; BUG_ON(icd != pcdev->icd); /* disable capture, disable interrupts */ ceu_write(pcdev, CEIER, 0); ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ + + /* make sure active buffer is canceled */ + spin_lock_irqsave(&pcdev->lock, flags); + if (pcdev->active) { + list_del(&pcdev->active->queue); + pcdev->active->state = VIDEOBUF_ERROR; + wake_up_all(&pcdev->active->done); + pcdev->active = NULL; + } + spin_unlock_irqrestore(&pcdev->lock, flags); + icd->ops->release(icd); dev_info(&icd->dev, |