diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2014-09-20 09:24:58 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-11-03 08:36:40 -0200 |
| commit | c0d5b5fbbe1b13c5d474b58bf89dd7ff2e6eb6e1 (patch) | |
| tree | bd8367b2b88c773239ade3a6f94f11c9757c66f9 /drivers/media/pci/cx88/cx88-vbi.c | |
| parent | 98822de9ae22083658104e43d52f2cb0f3df1138 (diff) | |
| download | linux-c0d5b5fbbe1b13c5d474b58bf89dd7ff2e6eb6e1.tar.gz linux-c0d5b5fbbe1b13c5d474b58bf89dd7ff2e6eb6e1.tar.bz2 linux-c0d5b5fbbe1b13c5d474b58bf89dd7ff2e6eb6e1.zip | |
[media] cx88: fix VBI support
Now works with both NTSC and PAL. Tested with CC/XDS for NTSC and
teletext/WSS for PAL. The start lines were wrong, the WSS signal
wasn't captured and there was no difference between NTSC and PAL
w.r.t. the count[] values so NTSC returned way too many lines.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/pci/cx88/cx88-vbi.c')
| -rw-r--r-- | drivers/media/pci/cx88/cx88-vbi.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/drivers/media/pci/cx88/cx88-vbi.c b/drivers/media/pci/cx88/cx88-vbi.c index 042f54597a9b..6ab6e27648f6 100644 --- a/drivers/media/pci/cx88/cx88-vbi.c +++ b/drivers/media/pci/cx88/cx88-vbi.c @@ -23,20 +23,22 @@ int cx8800_vbi_fmt (struct file *file, void *priv, f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH; f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; f->fmt.vbi.offset = 244; - f->fmt.vbi.count[0] = VBI_LINE_COUNT; - f->fmt.vbi.count[1] = VBI_LINE_COUNT; if (dev->core->tvnorm & V4L2_STD_525_60) { /* ntsc */ f->fmt.vbi.sampling_rate = 28636363; f->fmt.vbi.start[0] = 10; f->fmt.vbi.start[1] = 273; + f->fmt.vbi.count[0] = VBI_LINE_NTSC_COUNT; + f->fmt.vbi.count[1] = VBI_LINE_NTSC_COUNT; } else if (dev->core->tvnorm & V4L2_STD_625_50) { /* pal */ f->fmt.vbi.sampling_rate = 35468950; - f->fmt.vbi.start[0] = 7 -1; - f->fmt.vbi.start[1] = 319 -1; + f->fmt.vbi.start[0] = V4L2_VBI_ITU_625_F1_START + 5; + f->fmt.vbi.start[1] = V4L2_VBI_ITU_625_F2_START + 5; + f->fmt.vbi.count[0] = VBI_LINE_PAL_COUNT; + f->fmt.vbi.count[1] = VBI_LINE_PAL_COUNT; } return 0; } @@ -111,8 +113,13 @@ static int queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt, unsigned int *num_buffers, unsigned int *num_planes, unsigned int sizes[], void *alloc_ctxs[]) { + struct cx8800_dev *dev = q->drv_priv; + *num_planes = 1; - sizes[0] = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2; + if (dev->core->tvnorm & V4L2_STD_525_60) + sizes[0] = VBI_LINE_NTSC_COUNT * VBI_LINE_LENGTH * 2; + else + sizes[0] = VBI_LINE_PAL_COUNT * VBI_LINE_LENGTH * 2; return 0; } @@ -122,10 +129,15 @@ static int buffer_prepare(struct vb2_buffer *vb) struct cx8800_dev *dev = vb->vb2_queue->drv_priv; struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb); struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0); + unsigned int lines; unsigned int size; int rc; - size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2; + if (dev->core->tvnorm & V4L2_STD_525_60) + lines = VBI_LINE_NTSC_COUNT; + else + lines = VBI_LINE_PAL_COUNT; + size = lines * VBI_LINE_LENGTH * 2; if (vb2_plane_size(vb, 0) < size) return -EINVAL; vb2_set_plane_payload(vb, 0, size); @@ -135,9 +147,9 @@ static int buffer_prepare(struct vb2_buffer *vb) return -EIO; cx88_risc_buffer(dev->pci, &buf->risc, sgt->sgl, - 0, VBI_LINE_LENGTH * VBI_LINE_COUNT, + 0, VBI_LINE_LENGTH * lines, VBI_LINE_LENGTH, 0, - VBI_LINE_COUNT); + lines); return 0; } |