[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>

5 files changed, 178 insertions, 116 deletions

diff --git a/drivers/media/video/saa7164/saa7164-api.c b/drivers/media/video/saa7164/saa7164-api.c
index 1702baad4f09..a810e6d88270 100644
--- a/drivers/media/video/saa7164/saa7164-api.c
+++ b/drivers/media/video/saa7164/saa7164-api.c
@@ -24,7 +24,7 @@
 
 #include "saa7164.h"
 
-int saa7164_api_transition_port(struct saa7164_tsport *port, u8 mode)
+int saa7164_api_transition_port(struct saa7164_port *port, u8 mode)
 {
         int ret;
 
@@ -63,7 +63,7 @@ int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen)
 
 
 int saa7164_api_configure_port_mpeg2ts(struct saa7164_dev *dev,
-        struct saa7164_tsport *port,
+        struct saa7164_port *port,
         tmComResTSFormatDescrHeader_t *tsfmt)
 {
         dprintk(DBGLVL_API, "    bFormatIndex = 0x%x\n", tsfmt->bFormatIndex);
@@ -98,7 +98,7 @@ int saa7164_api_configure_port_mpeg2ts(struct saa7164_dev *dev,
 
 int saa7164_api_dump_subdevs(struct saa7164_dev *dev, u8 *buf, int len)
 {
-        struct saa7164_tsport *port = 0;
+        struct saa7164_port *port = 0;
         u32 idx, next_offset;
         int i;
         tmComResDescrHeader_t *hdr, *t;
diff --git a/drivers/media/video/saa7164/saa7164-buffer.c b/drivers/media/video/saa7164/saa7164-buffer.c
index 7a5c7d05c15a..6f58af44d02b 100644
--- a/drivers/media/video/saa7164/saa7164-buffer.c
+++ b/drivers/media/video/saa7164/saa7164-buffer.c
@@ -66,12 +66,33 @@
                                                     | etc
  */
 
+void saa7164_buffer_display(struct saa7164_buffer *buf)
+{
+        struct saa7164_dev *dev = buf->port->dev;
+        int i;
+
+        dprintk(DBGLVL_BUF, "%s()   buffer @ 0x%p nr=%d\n",
+                __func__, buf, buf->idx);
+        dprintk(DBGLVL_BUF, "  pci_cpu @ 0x%p    dma @ 0x%p len = 0x%x\n",
+                buf->cpu, (void *)buf->dma, buf->pci_size);
+        dprintk(DBGLVL_BUF, "   pt_cpu @ 0x%p pt_dma @ 0x%p len = 0x%x\n",
+                buf->pt_cpu, (void *)buf->pt_dma, buf->pt_size);
+
+        /* Format the Page Table Entries to point into the data buffer */
+        for (i = 0 ; i < SAA7164_PT_ENTRIES; i++) {
+
+                dprintk(DBGLVL_BUF, "    pt[%02d] = 0x%p -> 0x%llx\n",
+                        i, buf->pt_cpu, (u64)*(buf->pt_cpu));
+
+        }
+}
 /* Allocate a new buffer structure and associated PCI space in bytes.
  * len must be a multiple of sizeof(u64)
  */
-struct saa7164_buffer *saa7164_buffer_alloc(struct saa7164_tsport *port,
+struct saa7164_buffer *saa7164_buffer_alloc(struct saa7164_port *port,
         u32 len)
 {
+        tmHWStreamParameters_t *params = &port->hw_streamingparams;
         struct saa7164_buffer *buf = 0;
         struct saa7164_dev *dev = port->dev;
         int i;
@@ -87,8 +108,11 @@ struct saa7164_buffer *saa7164_buffer_alloc(struct saa7164_tsport *port,
                 goto ret;
         }
 
+        buf->idx = -1;
         buf->port = port;
         buf->flags = SAA7164_BUFFER_FREE;
+        buf->pos = 0;
+        buf->actual_size = params->pitch * params->numberoflines;
         /* TODO: arg len is being ignored */
         buf->pci_size = SAA7164_PT_ENTRIES * 0x1000;
         buf->pt_size = (SAA7164_PT_ENTRIES * sizeof(u64)) + 0x1000;
@@ -108,7 +132,8 @@ struct saa7164_buffer *saa7164_buffer_alloc(struct saa7164_tsport *port,
         memset(buf->cpu, 0xff, buf->pci_size);
         memset(buf->pt_cpu, 0xff, buf->pt_size);
 
-        dprintk(DBGLVL_BUF, "%s()   allocated buffer @ 0x%p\n", __func__, buf);
+        dprintk(DBGLVL_BUF, "%s()   allocated buffer @ 0x%p\n",
+                __func__, buf);
         dprintk(DBGLVL_BUF, "  pci_cpu @ 0x%p    dma @ 0x%08lx len = 0x%x\n",
                 buf->cpu, (long)buf->dma, buf->pci_size);
         dprintk(DBGLVL_BUF, "   pt_cpu @ 0x%p pt_dma @ 0x%08lx len = 0x%x\n",
@@ -133,26 +158,110 @@ ret:
         return buf;
 }
 
-int saa7164_buffer_dealloc(struct saa7164_tsport *port,
-        struct saa7164_buffer *buf)
+int saa7164_buffer_dealloc(struct saa7164_buffer *buf)
 {
         struct saa7164_dev *dev;
 
-        if (!buf || !port)
+        if (!buf || !buf->port)
                 return SAA_ERR_BAD_PARAMETER;
-        dev = port->dev;
+        dev = buf->port->dev;
 
-        dprintk(DBGLVL_BUF, "%s() deallocating buffer @ 0x%p\n", __func__, buf);
+        dprintk(DBGLVL_BUF, "%s() deallocating buffer @ 0x%p\n",
+                __func__, buf);
 
         if (buf->flags != SAA7164_BUFFER_FREE)
                 log_warn(" freeing a non-free buffer\n");
 
-        pci_free_consistent(port->dev->pci, buf->pci_size, buf->cpu, buf->dma);
-        pci_free_consistent(port->dev->pci, buf->pt_size, buf->pt_cpu,
-                buf->pt_dma);
+        pci_free_consistent(dev->pci, buf->pci_size, buf->cpu, buf->dma);
+        pci_free_consistent(dev->pci, buf->pt_size, buf->pt_cpu, buf->pt_dma);
 
         kfree(buf);
 
         return SAA_OK;
 }
 
+/* Write a buffer into the hardware */
+int saa7164_buffer_activate(struct saa7164_buffer *buf, int i)
+{
+        struct saa7164_port *port = buf->port;
+        struct saa7164_dev *dev = port->dev;
+
+        if ((i < 0) || (i >= port->hwcfg.buffercount))
+                return -EINVAL;
+
+        dprintk(DBGLVL_BUF, "%s(idx = %d)\n", __func__, i);
+
+        buf->idx = i; /* Note of which buffer list index position we occupy */
+        buf->flags = SAA7164_BUFFER_BUSY;
+        buf->pos = 0;
+
+        /* 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_BUF, "   buf[%d] offset 0x%llx (0x%x) "
+                "buf 0x%llx/%llx (0x%x/%x) nr=%d\n",
+                buf->idx,
+                (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)),
+                buf->idx);
+
+        return 0;
+}
+
+int saa7164_buffer_cfg_port(struct saa7164_port *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_BUF, "%s(port=%d)\n", __func__, port->nr);
+
+        saa7164_writel(port->bufcounter, 0);
+        saa7164_writel(port->pitch, params->pitch);
+        saa7164_writel(port->bufsize, params->pitch * params->numberoflines);
+
+        dprintk(DBGLVL_BUF, " configured:\n");
+        dprintk(DBGLVL_BUF, "   lmmio       0x%p\n", dev->lmmio);
+        dprintk(DBGLVL_BUF, "   bufcounter  0x%x = 0x%x\n", port->bufcounter,
+                saa7164_readl(port->bufcounter));
+
+        dprintk(DBGLVL_BUF, "   pitch       0x%x = %d\n", port->pitch,
+                saa7164_readl(port->pitch));
+
+        dprintk(DBGLVL_BUF, "   bufsize     0x%x = %d\n", port->bufsize,
+                saa7164_readl(port->bufsize));
+
+        dprintk(DBGLVL_BUF, "   buffercount = %d\n", port->hwcfg.buffercount);
+        dprintk(DBGLVL_BUF, "   bufoffset = 0x%x\n", port->bufoffset);
+        dprintk(DBGLVL_BUF, "   bufptr32h = 0x%x\n", port->bufptr32h);
+        dprintk(DBGLVL_BUF, "   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);
+
+                if (buf->flags != SAA7164_BUFFER_FREE)
+                        BUG();
+
+                /* Place the buffer in the h/w queue */
+                saa7164_buffer_activate(buf, i);
+
+                /* Don't exceed the device maximum # bufs */
+                if (i++ > port->hwcfg.buffercount)
+                        BUG();
+
+        }
+        mutex_unlock(&port->dmaqueue_lock);
+
+        return 0;
+}
+
diff --git a/drivers/media/video/saa7164/saa7164-core.c b/drivers/media/video/saa7164/saa7164-core.c
index 1bd1e62f9896..88c36bd2bd1d 100644
--- a/drivers/media/video/saa7164/saa7164-core.c
+++ b/drivers/media/video/saa7164/saa7164-core.c
@@ -74,7 +74,7 @@ static void saa7164_work_cmdhandler(struct work_struct *w)
 
 static void saa7164_buffer_deliver(struct saa7164_buffer *buf)
 {
-        struct saa7164_tsport *port = buf->port;
+        struct saa7164_port *port = buf->port;
 
         /* Feed the transport payload into the kernel demux */
         dvb_dmx_swfilter_packets(&port->dvb.demux, (u8 *)buf->cpu,
@@ -82,7 +82,7 @@ static void saa7164_buffer_deliver(struct saa7164_buffer *buf)
 
 }
 
-static irqreturn_t saa7164_irq_ts(struct saa7164_tsport *port)
+static irqreturn_t saa7164_irq_ts(struct saa7164_port *port)
 {
         struct saa7164_dev *dev = port->dev;
         struct saa7164_buffer *buf;
@@ -107,7 +107,7 @@ static irqreturn_t saa7164_irq_ts(struct saa7164_tsport *port)
                 if (i++ > port->hwcfg.buffercount)
                         BUG();
 
-                if (buf->nr == rp) {
+                if (buf->idx == rp) {
                         /* Found the buffer, deal with it */
                         dprintk(DBGLVL_IRQ, "%s() wp: %d processing: %d\n",
                                 __func__, wp, rp);
@@ -446,20 +446,18 @@ static int saa7164_dev_setup(struct saa7164_dev *dev)
         /* Transport port A Defaults / setup */
         dev->ts1.dev = dev;
         dev->ts1.nr = 0;
+        dev->ts1.type = SAA7164_MPEG_UNDEFINED;
         mutex_init(&dev->ts1.dvb.lock);
         INIT_LIST_HEAD(&dev->ts1.dmaqueue.list);
-        INIT_LIST_HEAD(&dev->ts1.dummy_dmaqueue.list);
         mutex_init(&dev->ts1.dmaqueue_lock);
-        mutex_init(&dev->ts1.dummy_dmaqueue_lock);
 
         /* Transport port B Defaults / setup */
         dev->ts2.dev = dev;
         dev->ts2.nr = 1;
+        dev->ts2.type = SAA7164_MPEG_UNDEFINED;
         mutex_init(&dev->ts2.dvb.lock);
         INIT_LIST_HEAD(&dev->ts2.dmaqueue.list);
-        INIT_LIST_HEAD(&dev->ts2.dummy_dmaqueue.list);
         mutex_init(&dev->ts2.dmaqueue_lock);
-        mutex_init(&dev->ts2.dummy_dmaqueue_lock);
 
         if (get_resources(dev) < 0) {
                 printk(KERN_ERR "CORE %s No more PCIe resources for "
diff --git a/drivers/media/video/saa7164/saa7164-dvb.c b/drivers/media/video/saa7164/saa7164-dvb.c
index 4bae74567c92..ffa1c970d1cd 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;
diff --git a/drivers/media/video/saa7164/saa7164.h b/drivers/media/video/saa7164/saa7164.h
index c4c62b0b83a0..1ca9bf2e3426 100644
--- a/drivers/media/video/saa7164/saa7164.h
+++ b/drivers/media/video/saa7164/saa7164.h
@@ -91,6 +91,7 @@
 enum port_t {
         SAA7164_MPEG_UNDEFINED = 0,
         SAA7164_MPEG_DVB,
+        SAA7164_MPEG_ENCODER,
 };
 
 enum saa7164_i2c_bus_nr {
@@ -192,14 +193,15 @@ struct saa7164_i2c {
         u32                             i2c_rc;
 };
 
-struct saa7164_tsport;
+struct saa7164_port;
 
 struct saa7164_buffer {
         struct list_head list;
 
-        u32 nr;
+        /* Note of which h/w buffer list index position we occupy */
+        int idx;
 
-        struct saa7164_tsport *port;
+        struct saa7164_port *port;
 
         /* Hardware Specific */
         /* PCI Memory allocations */
@@ -214,17 +216,21 @@ struct saa7164_buffer {
         u32 pt_size;            /* PCI allocation size in bytes */
         u64 *pt_cpu;            /* Virtual address */
         dma_addr_t pt_dma;      /* Physical address */
+
+        /* Encoder fops */
+        u32 pos;
+        u32 actual_size;
 };
 
-struct saa7164_tsport {
+struct saa7164_port {
 
         struct saa7164_dev *dev;
-        int nr;
         enum port_t type;
+        int nr;
 
-        struct saa7164_dvb dvb;
+        /* --- Generic port attributes --- */
 
-        /* HW related stream parameters */
+        /* HW stream parameters */
         tmHWStreamParameters_t hw_streamingparams;
 
         /* DMA configuration values, is seeded during initialization */
@@ -240,10 +246,14 @@ struct saa7164_tsport {
         u64 bufptr64;
 
         u32 numpte;     /* Number of entries in array, only valid in head */
+
         struct mutex dmaqueue_lock;
-        struct mutex dummy_dmaqueue_lock;
         struct saa7164_buffer dmaqueue;
-        struct saa7164_buffer dummy_dmaqueue;
+
+        /* --- DVB Transport Specific --- */
+        struct saa7164_dvb dvb;
+
+        /* --- Encoder/V4L related attributes --- */
 
 };
 
@@ -287,7 +297,7 @@ struct saa7164_dev {
         struct saa7164_i2c i2c_bus[3];
 
         /* Transport related */
-        struct saa7164_tsport ts1, ts2;
+        struct saa7164_port ts1, ts2;
 
         /* Deferred command/api interrupts handling */
         struct work_struct workcmd;
@@ -344,7 +354,7 @@ int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
-int saa7164_api_transition_port(struct saa7164_tsport *port, u8 mode);
+int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
 
 /* ----------------------------------------------------------- */
 /* saa7164-cards.c                                             */
@@ -364,15 +374,17 @@ extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
 
 /* ----------------------------------------------------------- */
 /* saa7164-dvb.c                                               */
-extern int saa7164_dvb_register(struct saa7164_tsport *port);
-extern int saa7164_dvb_unregister(struct saa7164_tsport *port);
+extern int saa7164_dvb_register(struct saa7164_port *port);
+extern int saa7164_dvb_unregister(struct saa7164_port *port);
 
 /* ----------------------------------------------------------- */
 /* saa7164-buffer.c                                            */
-extern struct saa7164_buffer *saa7164_buffer_alloc(struct saa7164_tsport *port,
-        u32 len);
-extern int saa7164_buffer_dealloc(struct saa7164_tsport *port,
-        struct saa7164_buffer *buf);
+extern struct saa7164_buffer *saa7164_buffer_alloc(
+        struct saa7164_port *port, u32 len);
+extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
+extern void saa7164_buffer_display(struct saa7164_buffer *buf);
+extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
+extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
 
 /* ----------------------------------------------------------- */