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| author | Andy Walls <awalls@radix.net> | 2008-12-08 23:02:45 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-30 09:38:29 -0200 |
| commit | 66c2a6b0bc0b394d215768610d96f44cf97052ac (patch) | |
| tree | a88946e764eb5a829a920c5027b4d92922cc54ee /drivers/media/video/cx18/cx18-fileops.c | |
| parent | b80e1074c734416987486b7b76b6479faa73f1e2 (diff) | |
| download | linux-66c2a6b0bc0b394d215768610d96f44cf97052ac.tar.gz linux-66c2a6b0bc0b394d215768610d96f44cf97052ac.tar.bz2 linux-66c2a6b0bc0b394d215768610d96f44cf97052ac.zip | |
V4L/DVB (9801): cx18: Allow more than 63 capture buffers in rotation per stream
cx18: Allow more than 63 capture buffers in rotation per stream. Implement
q_busy to hold buffers the firmware has for use. q_free holds truly unused
buffers in a pool. New buffers are given to the firmware as soon as the
firmware returns one, if there are any to give to the firmware.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18/cx18-fileops.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-fileops.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/media/video/cx18/cx18-fileops.c b/drivers/media/video/cx18/cx18-fileops.c index 504a1f9edec6..61192e62a80f 100644 --- a/drivers/media/video/cx18/cx18-fileops.c +++ b/drivers/media/video/cx18/cx18-fileops.c @@ -187,7 +187,7 @@ static struct cx18_buffer *cx18_get_buffer(struct cx18_stream *s, int non_block, while ((buf = cx18_dequeue(s_vbi, &s_vbi->q_full))) { /* byteswap and process VBI data */ /* cx18_process_vbi_data(cx, buf, s_vbi->dma_pts, s_vbi->type); */ - cx18_enqueue(s_vbi, buf, &s_vbi->q_free); + cx18_stream_put_buf_fw(s_vbi, buf); } } buf = &cx->vbi.sliced_mpeg_buf; @@ -361,15 +361,9 @@ static ssize_t cx18_read(struct cx18_stream *s, char __user *ubuf, tot_count - tot_written); if (buf != &cx->vbi.sliced_mpeg_buf) { - if (buf->readpos == buf->bytesused) { - cx18_buf_sync_for_device(s, buf); - cx18_enqueue(s, buf, &s->q_free); - cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, - s->handle, - (void __iomem *)&cx->scb->cpu_mdl[buf->id] - - cx->enc_mem, - 1, buf->id, s->buf_size); - } else + if (buf->readpos == buf->bytesused) + cx18_stream_put_buf_fw(s, buf); + else cx18_push(s, buf, &s->q_full); } else if (buf->readpos == buf->bytesused) { int idx = cx->vbi.inserted_frame % CX18_VBI_FRAMES; |