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path: root/drivers/media/video/saa7134/saa7134-ts.c
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Diffstat (limited to 'drivers/media/video/saa7134/saa7134-ts.c')
-rw-r--r--drivers/media/video/saa7134/saa7134-ts.c122
1 files changed, 67 insertions, 55 deletions
diff --git a/drivers/media/video/saa7134/saa7134-ts.c b/drivers/media/video/saa7134/saa7134-ts.c
index cc8b923afbc..3fa652279ac 100644
--- a/drivers/media/video/saa7134/saa7134-ts.c
+++ b/drivers/media/video/saa7134/saa7134-ts.c
@@ -65,35 +65,10 @@ static int buffer_activate(struct saa7134_dev *dev,
/* start DMA */
saa7134_set_dmabits(dev);
- mod_timer(&dev->ts_q.timeout, jiffies+BUFFER_TIMEOUT);
-
- if (dev->ts_state == SAA7134_TS_BUFF_DONE) {
- /* Clear TS cache */
- dev->buff_cnt = 0;
- saa_writeb(SAA7134_TS_SERIAL1, 0x00);
- saa_writeb(SAA7134_TS_SERIAL1, 0x03);
- saa_writeb(SAA7134_TS_SERIAL1, 0x00);
- saa_writeb(SAA7134_TS_SERIAL1, 0x01);
-
- /* TS clock non-inverted */
- saa_writeb(SAA7134_TS_SERIAL1, 0x00);
-
- /* Start TS stream */
- switch (saa7134_boards[dev->board].ts_type) {
- case SAA7134_MPEG_TS_PARALLEL:
- saa_writeb(SAA7134_TS_SERIAL0, 0x40);
- saa_writeb(SAA7134_TS_PARALLEL, 0xec);
- break;
- case SAA7134_MPEG_TS_SERIAL:
- saa_writeb(SAA7134_TS_SERIAL0, 0xd8);
- saa_writeb(SAA7134_TS_PARALLEL, 0x6c);
- saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 0xbc);
- saa_writeb(SAA7134_TS_SERIAL1, 0x02);
- break;
- }
+ mod_timer(&dev->ts_q.timeout, jiffies+TS_BUFFER_TIMEOUT);
- dev->ts_state = SAA7134_TS_STARTED;
- }
+ if (!dev->ts_started)
+ saa7134_ts_start(dev);
return 0;
}
@@ -104,7 +79,6 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
struct saa7134_dev *dev = q->priv_data;
struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
unsigned int lines, llength, size;
- u32 control;
int err;
dprintk("buffer_prepare [%p,%s]\n",buf,v4l2_field_names[field]);
@@ -121,8 +95,11 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
}
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
+
struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
+ dprintk("buffer_prepare: needs_init\n");
+
buf->vb.width = llength;
buf->vb.height = lines;
buf->vb.size = size;
@@ -139,23 +116,6 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
goto oops;
}
- dev->buff_cnt++;
-
- if (dev->buff_cnt == dev->ts.nr_bufs) {
- dev->ts_state = SAA7134_TS_BUFF_DONE;
- /* dma: setup channel 5 (= TS) */
- control = SAA7134_RS_CONTROL_BURST_16 |
- SAA7134_RS_CONTROL_ME |
- (buf->pt->dma >> 12);
-
- saa_writeb(SAA7134_TS_DMA0, (lines - 1) & 0xff);
- saa_writeb(SAA7134_TS_DMA1, ((lines - 1) >> 8) & 0xff);
- /* TSNOPIT=0, TSCOLAP=0 */
- saa_writeb(SAA7134_TS_DMA2, (((lines - 1) >> 16) & 0x3f) | 0x00);
- saa_writel(SAA7134_RS_PITCH(5), TS_PACKET_SIZE);
- saa_writel(SAA7134_RS_CONTROL(5), control);
- }
-
buf->vb.state = VIDEOBUF_PREPARED;
buf->activate = buffer_activate;
buf->vb.field = field;
@@ -175,8 +135,7 @@ buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
if (0 == *count)
*count = dev->ts.nr_bufs;
*count = saa7134_buffer_count(*size,*count);
- dev->buff_cnt = 0;
- dev->ts_state = SAA7134_TS_STOPPED;
+
return 0;
}
@@ -193,11 +152,9 @@ static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
struct saa7134_dev *dev = q->priv_data;
- if (dev->ts_state == SAA7134_TS_STARTED) {
- /* Stop TS transport */
- saa_writeb(SAA7134_TS_PARALLEL, 0x6c);
- dev->ts_state = SAA7134_TS_STOPPED;
- }
+ if (dev->ts_started)
+ saa7134_ts_stop(dev);
+
saa7134_dma_free(q,buf);
}
@@ -214,7 +171,7 @@ EXPORT_SYMBOL_GPL(saa7134_ts_qops);
static unsigned int tsbufs = 8;
module_param(tsbufs, int, 0444);
-MODULE_PARM_DESC(tsbufs,"number of ts buffers, range 2-32");
+MODULE_PARM_DESC(tsbufs, "number of ts buffers for read/write IO, range 2-32");
static unsigned int ts_nr_packets = 64;
module_param(ts_nr_packets, int, 0444);
@@ -256,6 +213,7 @@ int saa7134_ts_init1(struct saa7134_dev *dev)
dev->ts_q.timeout.data = (unsigned long)(&dev->ts_q);
dev->ts_q.dev = dev;
dev->ts_q.need_two = 1;
+ dev->ts_started = 0;
saa7134_pgtable_alloc(dev->pci,&dev->ts.pt_ts);
/* init TS hw */
@@ -264,13 +222,67 @@ int saa7134_ts_init1(struct saa7134_dev *dev)
return 0;
}
+/* Function for stop TS */
+int saa7134_ts_stop(struct saa7134_dev *dev)
+{
+ dprintk("TS stop\n");
+
+ BUG_ON(!dev->ts_started);
+
+ /* Stop TS stream */
+ switch (saa7134_boards[dev->board].ts_type) {
+ case SAA7134_MPEG_TS_PARALLEL:
+ saa_writeb(SAA7134_TS_PARALLEL, 0x6c);
+ dev->ts_started = 0;
+ break;
+ case SAA7134_MPEG_TS_SERIAL:
+ saa_writeb(SAA7134_TS_SERIAL0, 0x40);
+ dev->ts_started = 0;
+ break;
+ }
+ return 0;
+}
+
+/* Function for start TS */
+int saa7134_ts_start(struct saa7134_dev *dev)
+{
+ dprintk("TS start\n");
+
+ BUG_ON(dev->ts_started);
+
+ saa_writeb(SAA7134_TS_SERIAL1, 0x00);
+ saa_writeb(SAA7134_TS_SERIAL1, 0x03);
+ saa_writeb(SAA7134_TS_SERIAL1, 0x00);
+ saa_writeb(SAA7134_TS_SERIAL1, 0x01);
+
+ /* TS clock non-inverted */
+ saa_writeb(SAA7134_TS_SERIAL1, 0x00);
+
+ /* Start TS stream */
+ switch (saa7134_boards[dev->board].ts_type) {
+ case SAA7134_MPEG_TS_PARALLEL:
+ saa_writeb(SAA7134_TS_SERIAL0, 0x40);
+ saa_writeb(SAA7134_TS_PARALLEL, 0xec);
+ break;
+ case SAA7134_MPEG_TS_SERIAL:
+ saa_writeb(SAA7134_TS_SERIAL0, 0xd8);
+ saa_writeb(SAA7134_TS_PARALLEL, 0x6c);
+ saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 0xbc);
+ saa_writeb(SAA7134_TS_SERIAL1, 0x02);
+ break;
+ }
+
+ dev->ts_started = 1;
+
+ return 0;
+}
+
int saa7134_ts_fini(struct saa7134_dev *dev)
{
saa7134_pgtable_free(dev->pci,&dev->ts.pt_ts);
return 0;
}
-
void saa7134_irq_ts_done(struct saa7134_dev *dev, unsigned long status)
{
enum v4l2_field field;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 04:01:36 +0000