diff options
| author | Andy Walls <awalls@radix.net> | 2008-08-24 01:36:50 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-12 15:36:53 +0400 |
| commit | 3b5df8ea40ac533c62b8e5f9f173d985665fc752 (patch) | |
| tree | 444d0324ac1d87e6ba379ccb97a743797d951f18 | |
| parent | d3c5e7075508a6874d1a53d0a409b0bbbe3a9fbe (diff) | |
| download | linux-3b5df8ea40ac533c62b8e5f9f173d985665fc752.tar.xz | |
V4L/DVB (8774): cx18: Have CX23418 release buffers at end of capture.
cx18: Have CX23418 release buffers at end of capture. The CX23418 reuses task
handles so we need to have it release the buffers associated with a task handle
at the end of a capture. If we don't, buffer ids used for one type of stream
in the driver (MPEG, TS, PCM), could be used for another type of stream by the
CX23418, if a previously used handle is assigned to a different type of stream.
The driver would drop valid buffers when this happened.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/cx18/cx18-mailbox.c | 1 | ||||
| -rw-r--r-- | drivers/media/video/cx18/cx18-streams.c | 10 | ||||
| -rw-r--r-- | drivers/media/video/cx18/cx23418.h | 2 |
3 files changed, 12 insertions, 1 deletions
diff --git a/drivers/media/video/cx18/cx18-mailbox.c b/drivers/media/video/cx18/cx18-mailbox.c index 93177514e846..1b9fbf9a6bc5 100644 --- a/drivers/media/video/cx18/cx18-mailbox.c +++ b/drivers/media/video/cx18/cx18-mailbox.c @@ -82,6 +82,7 @@ static const struct cx18_api_info api_info[] = { API_ENTRY(CPU, CX18_CPU_DE_SET_MDL_ACK, 0), API_ENTRY(CPU, CX18_CPU_DE_SET_MDL, API_FAST), API_ENTRY(CPU, CX18_APU_RESETAI, API_FAST), + API_ENTRY(CPU, CX18_CPU_DE_RELEASE_MDL, 0), API_ENTRY(0, 0, 0), }; diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c index 53c5852bba37..4d5b446895cb 100644 --- a/drivers/media/video/cx18/cx18-streams.c +++ b/drivers/media/video/cx18/cx18-streams.c @@ -488,7 +488,14 @@ int cx18_start_v4l2_encode_stream(struct cx18_stream *s) /* begin_capture */ if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) { CX18_DEBUG_WARN("Error starting capture!\n"); + /* Ensure we're really not capturing before releasing MDLs */ + if (s->type == CX18_ENC_STREAM_TYPE_MPG) + cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1); + else + cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); + cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); + /* FIXME - clean-up DSP0_INT mask, i_flags, s_flags, etc. */ return -EINVAL; } @@ -540,6 +547,9 @@ int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end) CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n"); } + /* Tell the CX23418 it can't use our buffers anymore */ + cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); + if (s->type != CX18_ENC_STREAM_TYPE_TS) atomic_dec(&cx->ana_capturing); atomic_dec(&cx->tot_capturing); diff --git a/drivers/media/video/cx18/cx23418.h b/drivers/media/video/cx18/cx23418.h index e7ed053059a8..668f968d7761 100644 --- a/drivers/media/video/cx18/cx23418.h +++ b/drivers/media/video/cx18/cx23418.h @@ -351,7 +351,7 @@ Descriptor Lists to the driver IN[0] - Task handle. Handle of the task to start ReturnCode - One of the ERR_DE_... */ -/* #define CX18_CPU_DE_ReleaseMDL (CPU_CMD_MASK_DE | 0x0006) */ +#define CX18_CPU_DE_RELEASE_MDL (CPU_CMD_MASK_DE | 0x0006) /* Description: This command signals the cpu that the dat buffer has been consumed and ready for re-use. |