diff options
| author | Andy Walls <awalls@radix.net> | 2008-12-14 18:52:12 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-30 09:39:07 -0200 |
| commit | 0ef0289264e8f278312909f1639a7764cc9cf580 (patch) | |
| tree | 8727d4d5d7519db50e8cd77e03b0d00892d35d76 /drivers/media | |
| parent | 83c3a3c8b6a0e7a54ca9fa18b02c90e2d9a889f9 (diff) | |
V4L/DVB (9891): cx18 Replace magic number 63 with CX18_MAX_FW_MDLS_PER_STREAM
Removed magic number that referred to firmware limit on the number of
MDLs the firmware can maintain for any stream at any one time.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/cx18/cx18-driver.h | 5 | ||||
| -rw-r--r-- | drivers/media/video/cx18/cx18-queue.c | 5 | ||||
| -rw-r--r-- | drivers/media/video/cx18/cx18-streams.c | 5 |
3 files changed, 9 insertions, 6 deletions
diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h index 018d98f94f9..0d2edebc39b 100644 --- a/drivers/media/video/cx18/cx18-driver.h +++ b/drivers/media/video/cx18/cx18-driver.h @@ -116,7 +116,7 @@ #define CX18_DEFAULT_ENC_PCM_BUFFERS 1 /* Maximum firmware DMA buffers per stream */ -#define CX18_MAX_MDLS_PER_STREAM 63 +#define CX18_MAX_FW_MDLS_PER_STREAM 63 /* DMA buffer, default size in kB allocated */ #define CX18_DEFAULT_ENC_TS_BUFSIZE 32 @@ -255,7 +255,8 @@ struct cx18_scb; /* forward reference */ #define CX18_MAX_MDL_ACKS 2 -#define CX18_MAX_EPU_WORK_ORDERS 70 /* CPU_DE_RELEASE_MDL bursts 63 commands */ +#define CX18_MAX_EPU_WORK_ORDERS (CX18_MAX_FW_MDLS_PER_STREAM + 7) +/* CPU_DE_RELEASE_MDL can burst CX18_MAX_FW_MDLS_PER_STREAM orders in a group */ #define CX18_F_EWO_MB_STALE_UPON_RECEIPT 0x1 #define CX18_F_EWO_MB_STALE_WHILE_PROC 0x2 diff --git a/drivers/media/video/cx18/cx18-queue.c b/drivers/media/video/cx18/cx18-queue.c index a6b0666f0ba..2c58b0c478c 100644 --- a/drivers/media/video/cx18/cx18-queue.c +++ b/drivers/media/video/cx18/cx18-queue.c @@ -55,8 +55,9 @@ struct cx18_queue *_cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, mutex_lock(&s->qlock); - /* q_busy is restricted to 63 buffers to stay within firmware limits */ - if (q == &s->q_busy && atomic_read(&q->buffers) >= 63) + /* q_busy is restricted to a max buffer count imposed by firmware */ + if (q == &s->q_busy && + atomic_read(&q->buffers) >= CX18_MAX_FW_MDLS_PER_STREAM) q = &s->q_free; if (to_front) diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c index 985bad89f31..8fc655d3ced 100644 --- a/drivers/media/video/cx18/cx18-streams.c +++ b/drivers/media/video/cx18/cx18-streams.c @@ -425,7 +425,7 @@ void cx18_stream_load_fw_queue(struct cx18_stream *s) struct cx18_buffer *buf; if (atomic_read(&s->q_free.buffers) == 0 || - atomic_read(&s->q_busy.buffers) >= 63) + atomic_read(&s->q_busy.buffers) >= CX18_MAX_FW_MDLS_PER_STREAM) return; /* Move from q_free to q_busy notifying the firmware, until the limit */ @@ -434,7 +434,8 @@ void cx18_stream_load_fw_queue(struct cx18_stream *s) if (buf == NULL) break; q = cx18_stream_put_buf_fw(s, buf); - } while (atomic_read(&s->q_busy.buffers) < 63 && q == &s->q_busy); + } while (atomic_read(&s->q_busy.buffers) < CX18_MAX_FW_MDLS_PER_STREAM + && q == &s->q_busy); } int cx18_start_v4l2_encode_stream(struct cx18_stream *s) |