[media] saa7164: convert buffering structs to be more generic

Current structs assume transport, making a number of changes to
switch to generic functions allowing a smoother integration
for the analog encoder.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 22 insertions, 79 deletions

diff --git a/drivers/media/video/saa7164/saa7164-dvb.c b/drivers/media/video/saa7164/saa7164-dvb.c
index 4bae745..ffa1c97 100644
--- a/drivers/media/video/saa7164/saa7164-dvb.c
+++ b/drivers/media/video/saa7164/saa7164-dvb.c
@@ -82,7 +82,7 @@ static struct s5h1411_config hauppauge_s5h1411_config = {
 	.mpeg_timing   = S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
 };
 
-static int saa7164_dvb_stop_tsport(struct saa7164_tsport *port)
+static int saa7164_dvb_stop_port(struct saa7164_port *port)
 {
 	struct saa7164_dev *dev = port->dev;
 	int ret;
@@ -100,7 +100,7 @@ static int saa7164_dvb_stop_tsport(struct saa7164_tsport *port)
 	return ret;
 }
 
-static int saa7164_dvb_acquire_tsport(struct saa7164_tsport *port)
+static int saa7164_dvb_acquire_port(struct saa7164_port *port)
 {
 	struct saa7164_dev *dev = port->dev;
 	int ret;
@@ -118,7 +118,7 @@ static int saa7164_dvb_acquire_tsport(struct saa7164_tsport *port)
 	return ret;
 }
 
-static int saa7164_dvb_pause_tsport(struct saa7164_tsport *port)
+static int saa7164_dvb_pause_port(struct saa7164_port *port)
 {
 	struct saa7164_dev *dev = port->dev;
 	int ret;
@@ -140,90 +140,28 @@ static int saa7164_dvb_pause_tsport(struct saa7164_tsport *port)
  * the part through AVStream / KS Windows stages, forwards or backwards.
  * States are: stopped, acquired (h/w), paused, started.
  */
-static int saa7164_dvb_stop_streaming(struct saa7164_tsport *port)
+static int saa7164_dvb_stop_streaming(struct saa7164_port *port)
 {
 	struct saa7164_dev *dev = port->dev;
 	int ret;
 
 	dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
 
-	ret = saa7164_dvb_pause_tsport(port);
-	ret = saa7164_dvb_acquire_tsport(port);
-	ret = saa7164_dvb_stop_tsport(port);
+	ret = saa7164_dvb_pause_port(port);
+	ret = saa7164_dvb_acquire_port(port);
+	ret = saa7164_dvb_stop_port(port);
 
 	return ret;
 }
 
-static int saa7164_dvb_cfg_tsport(struct saa7164_tsport *port)
-{
-	tmHWStreamParameters_t *params = &port->hw_streamingparams;
-	struct saa7164_dev *dev = port->dev;
-	struct saa7164_buffer *buf;
-	struct list_head *c, *n;
-	int i = 0;
-
-	dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
-
-	saa7164_writel(port->pitch, params->pitch);
-	saa7164_writel(port->bufsize, params->pitch * params->numberoflines);
-
-	dprintk(DBGLVL_DVB, " configured:\n");
-	dprintk(DBGLVL_DVB, "   lmmio       0x%p\n", dev->lmmio);
-	dprintk(DBGLVL_DVB, "   bufcounter  0x%x = 0x%x\n", port->bufcounter,
-		saa7164_readl(port->bufcounter));
-
-	dprintk(DBGLVL_DVB, "   pitch       0x%x = %d\n", port->pitch,
-		saa7164_readl(port->pitch));
-
-	dprintk(DBGLVL_DVB, "   bufsize     0x%x = %d\n", port->bufsize,
-		saa7164_readl(port->bufsize));
-
-	dprintk(DBGLVL_DVB, "   buffercount = %d\n", port->hwcfg.buffercount);
-	dprintk(DBGLVL_DVB, "   bufoffset = 0x%x\n", port->bufoffset);
-	dprintk(DBGLVL_DVB, "   bufptr32h = 0x%x\n", port->bufptr32h);
-	dprintk(DBGLVL_DVB, "   bufptr32l = 0x%x\n", port->bufptr32l);
-
-	/* Poke the buffers and offsets into PCI space */
-	mutex_lock(&port->dmaqueue_lock);
-	list_for_each_safe(c, n, &port->dmaqueue.list) {
-		buf = list_entry(c, struct saa7164_buffer, list);
-
-		/* TODO: Review this in light of 32v64 assignments */
-		saa7164_writel(port->bufoffset + (sizeof(u32) * i), 0);
-		saa7164_writel(port->bufptr32h + ((sizeof(u32) * 2) * i),
-			buf->pt_dma);
-		saa7164_writel(port->bufptr32l + ((sizeof(u32) * 2) * i), 0);
-
-		dprintk(DBGLVL_DVB,
-			"   buf[%d] offset 0x%llx (0x%x) "
-			"buf 0x%llx/%llx (0x%x/%x)\n",
-			i,
-			(u64)port->bufoffset + (i * sizeof(u32)),
-			saa7164_readl(port->bufoffset + (sizeof(u32) * i)),
-			(u64)port->bufptr32h + ((sizeof(u32) * 2) * i),
-			(u64)port->bufptr32l + ((sizeof(u32) * 2) * i),
-			saa7164_readl(port->bufptr32h + ((sizeof(u32) * i)
-				* 2)),
-			saa7164_readl(port->bufptr32l + ((sizeof(u32) * i)
-				* 2)));
-
-		if (i++ > port->hwcfg.buffercount)
-			BUG();
-
-	}
-	mutex_unlock(&port->dmaqueue_lock);
-
-	return 0;
-}
-
-static int saa7164_dvb_start_tsport(struct saa7164_tsport *port)
+static int saa7164_dvb_start_port(struct saa7164_port *port)
 {
 	struct saa7164_dev *dev = port->dev;
 	int ret = 0, result;
 
 	dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
 
-	saa7164_dvb_cfg_tsport(port);
+	saa7164_buffer_cfg_port(port);
 
 	/* Acquire the hardware */
 	result = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
@@ -284,7 +222,7 @@ out:
 static int saa7164_dvb_start_feed(struct dvb_demux_feed *feed)
 {
 	struct dvb_demux *demux = feed->demux;
-	struct saa7164_tsport *port = (struct saa7164_tsport *) demux->priv;
+	struct saa7164_port *port = (struct saa7164_port *) demux->priv;
 	struct saa7164_dvb *dvb = &port->dvb;
 	struct saa7164_dev *dev = port->dev;
 	int ret = 0;
@@ -298,7 +236,7 @@ static int saa7164_dvb_start_feed(struct dvb_demux_feed *feed)
 		mutex_lock(&dvb->lock);
 		if (dvb->feeding++ == 0) {
 			/* Start transport */
-			ret = saa7164_dvb_start_tsport(port);
+			ret = saa7164_dvb_start_port(port);
 		}
 		mutex_unlock(&dvb->lock);
 		dprintk(DBGLVL_DVB, "%s(port=%d) now feeding = %d\n",
@@ -311,7 +249,7 @@ static int saa7164_dvb_start_feed(struct dvb_demux_feed *feed)
 static int saa7164_dvb_stop_feed(struct dvb_demux_feed *feed)
 {
 	struct dvb_demux *demux = feed->demux;
-	struct saa7164_tsport *port = (struct saa7164_tsport *) demux->priv;
+	struct saa7164_port *port = (struct saa7164_port *) demux->priv;
 	struct saa7164_dvb *dvb = &port->dvb;
 	struct saa7164_dev *dev = port->dev;
 	int ret = 0;
@@ -332,7 +270,7 @@ static int saa7164_dvb_stop_feed(struct dvb_demux_feed *feed)
 	return ret;
 }
 
-static int dvb_register(struct saa7164_tsport *port)
+static int dvb_register(struct saa7164_port *port)
 {
 	struct saa7164_dvb *dvb = &port->dvb;
 	struct saa7164_dev *dev = port->dev;
@@ -341,6 +279,9 @@ static int dvb_register(struct saa7164_tsport *port)
 
 	dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
 
+	if (port->type != SAA7164_MPEG_DVB)
+		BUG();
+
 	/* Sanity check that the PCI configuration space is active */
 	if (port->hwcfg.BARLocation == 0) {
 		result = -ENOMEM;
@@ -378,7 +319,6 @@ static int dvb_register(struct saa7164_tsport *port)
 				DRIVER_NAME, result);
 			goto fail_adapter;
 		}
-		buf->nr = i;
 
 		mutex_lock(&port->dmaqueue_lock);
 		list_add_tail(&buf->list, &port->dmaqueue.list);
@@ -473,7 +413,7 @@ fail_adapter:
 	return result;
 }
 
-int saa7164_dvb_unregister(struct saa7164_tsport *port)
+int saa7164_dvb_unregister(struct saa7164_port *port)
 {
 	struct saa7164_dvb *dvb = &port->dvb;
 	struct saa7164_dev *dev = port->dev;
@@ -482,12 +422,15 @@ int saa7164_dvb_unregister(struct saa7164_tsport *port)
 
 	dprintk(DBGLVL_DVB, "%s()\n", __func__);
 
+	if (port->type != SAA7164_MPEG_DVB)
+		BUG();
+
 	/* Remove any allocated buffers */
 	mutex_lock(&port->dmaqueue_lock);
 	list_for_each_safe(c, n, &port->dmaqueue.list) {
 		b = list_entry(c, struct saa7164_buffer, list);
 		list_del(c);
-		saa7164_buffer_dealloc(port, b);
+		saa7164_buffer_dealloc(b);
 	}
 	mutex_unlock(&port->dmaqueue_lock);
 
@@ -508,7 +451,7 @@ int saa7164_dvb_unregister(struct saa7164_tsport *port)
 /* All the DVB attach calls go here, this function get's modified
  * for each new card.
  */
-int saa7164_dvb_register(struct saa7164_tsport *port)
+int saa7164_dvb_register(struct saa7164_port *port)
 {
 	struct saa7164_dev *dev = port->dev;
 	struct saa7164_dvb *dvb = &port->dvb;