[PATCH] v4l: 653: ts dma buffer synchronization was inverted

- TS DMA buffer synchronization was inverted

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t.online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 17 insertions, 12 deletions

diff --git a/drivers/media/video/saa7134/saa7134-ts.c b/drivers/media/video/saa7134/saa7134-ts.c
index 463885601ab4..cdfd69873ba9 100644
--- a/drivers/media/video/saa7134/saa7134-ts.c
+++ b/drivers/media/video/saa7134/saa7134-ts.c
@@ -46,17 +46,11 @@ static int buffer_activate(struct saa7134_dev *dev,
                            struct saa7134_buf *buf,
                            struct saa7134_buf *next)
 {
-        u32 control;
 
         dprintk("buffer_activate [%p]",buf);
         buf->vb.state = STATE_ACTIVE;
         buf->top_seen = 0;
 
-        /* dma: setup channel 5 (= TS) */
-        control = SAA7134_RS_CONTROL_BURST_16 |
-                SAA7134_RS_CONTROL_ME |
-                (buf->pt->dma >> 12);
-
         if (NULL == next)
                 next = buf;
         if (V4L2_FIELD_TOP == buf->vb.field) {
@@ -68,8 +62,6 @@ static int buffer_activate(struct saa7134_dev *dev,
                 saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(next));
                 saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(buf));
         }
-        saa_writel(SAA7134_RS_PITCH(5),TS_PACKET_SIZE);
-        saa_writel(SAA7134_RS_CONTROL(5),control);
 
         /* start DMA */
         saa7134_set_dmabits(dev);
@@ -84,6 +76,7 @@ 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]);
@@ -115,6 +108,18 @@ static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
                 if (err)
                         goto oops;
         }
+
+        /* 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));
+        saa_writeb(SAA7134_TS_DMA2, ((((lines-1)>>16)&0x3f) | 0x00)); /* TSNOPIT=0, TSCOLAP=0 */
+        saa_writel(SAA7134_RS_PITCH(5),TS_PACKET_SIZE);
+        saa_writel(SAA7134_RS_CONTROL(5),control);
+
         buf->vb.state = STATE_PREPARED;
         buf->activate = buffer_activate;
         buf->vb.field = field;
@@ -164,11 +169,11 @@ EXPORT_SYMBOL_GPL(saa7134_ts_qops);
 /* ----------------------------------------------------------- */
 /* exported stuff                                              */
 
-static unsigned int tsbufs = 4;
+static unsigned int tsbufs = 8;
 module_param(tsbufs, int, 0444);
 MODULE_PARM_DESC(tsbufs,"number of ts buffers, range 2-32");
 
-static unsigned int ts_nr_packets = 30;
+static unsigned int ts_nr_packets = 64;
 module_param(ts_nr_packets, int, 0444);
 MODULE_PARM_DESC(ts_nr_packets,"size of a ts buffers (in ts packets)");
 
@@ -220,10 +225,10 @@ void saa7134_irq_ts_done(struct saa7134_dev *dev, unsigned long status)
         if (dev->ts_q.curr) {
                 field = dev->ts_q.curr->vb.field;
                 if (field == V4L2_FIELD_TOP) {
-                        if ((status & 0x100000) != 0x100000)
+                        if ((status & 0x100000) != 0x000000)
                                 goto done;
                 } else {
-                        if ((status & 0x100000) != 0x000000)
+                        if ((status & 0x100000) != 0x100000)
                                 goto done;
                 }
                 saa7134_buffer_finish(dev,&dev->ts_q,STATE_DONE);