V4L/DVB (11938): big rework of TS for saa7134

1. Add start/stop TS function.
2. Move setup DMA of TS to DMA function.
3. Write support cupture via MMAP
4. Rework startup and finish process, remove simple FSM.

Tested-by: Hermann Pitton <hermann-pitton@arcor.de>
Tested-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: Alexey Osipov <lion-simba@pridelands.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

5 files changed, 100 insertions, 62 deletions

diff --git a/drivers/media/video/saa7134/saa7134-cards.c b/drivers/media/video/saa7134/saa7134-cards.c
index 73482eb8d388..229ba93bcc9f 100644
--- a/drivers/media/video/saa7134/saa7134-cards.c
+++ b/drivers/media/video/saa7134/saa7134-cards.c
@@ -4458,6 +4458,7 @@ struct saa7134_board saa7134_boards[] = {
                 /* Igor Kuznetsov <igk@igk.ru> */
                 /* Andrey Melnikoff <temnota@kmv.ru> */
                 /* Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com> */
+                /* Alexey Osipov <lion-simba@pridelands.ru> */
                 .name           = "Beholder BeholdTV M6",
                 .audio_clock    = 0x00187de7,
                 .tuner_type     = TUNER_PHILIPS_FM1216ME_MK3,
@@ -4532,6 +4533,7 @@ struct saa7134_board saa7134_boards[] = {
                 /* Igor Kuznetsov <igk@igk.ru> */
                 /* Andrey Melnikoff <temnota@kmv.ru> */
                 /* Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com> */
+                /* Alexey Osipov <lion-simba@pridelands.ru> */
                 .name           = "Beholder BeholdTV M6 Extra",
                 .audio_clock    = 0x00187de7,
                 .tuner_type     = TUNER_PHILIPS_FM1216ME_MK3, /* FIXME to MK5 */
diff --git a/drivers/media/video/saa7134/saa7134-core.c b/drivers/media/video/saa7134/saa7134-core.c
index 37b14526a093..94a023a14bbc 100644
--- a/drivers/media/video/saa7134/saa7134-core.c
+++ b/drivers/media/video/saa7134/saa7134-core.c
@@ -331,6 +331,10 @@ void saa7134_buffer_next(struct saa7134_dev *dev,
                 dprintk("buffer_next %p\n",NULL);
                 saa7134_set_dmabits(dev);
                 del_timer(&q->timeout);
+
+                if (card_has_mpeg(dev))
+                        if (dev->ts_started)
+                                saa7134_ts_stop(dev);
         }
 }
 
@@ -416,6 +420,19 @@ int saa7134_set_dmabits(struct saa7134_dev *dev)
                 ctrl |= SAA7134_MAIN_CTRL_TE5;
                 irq  |= SAA7134_IRQ1_INTE_RA2_1 |
                         SAA7134_IRQ1_INTE_RA2_0;
+
+                /* dma: setup channel 5 (= TS) */
+
+                saa_writeb(SAA7134_TS_DMA0, (dev->ts.nr_packets - 1) & 0xff);
+                saa_writeb(SAA7134_TS_DMA1,
+                        ((dev->ts.nr_packets - 1) >> 8) & 0xff);
+                /* TSNOPIT=0, TSCOLAP=0 */
+                saa_writeb(SAA7134_TS_DMA2,
+                        (((dev->ts.nr_packets - 1) >> 16) & 0x3f) | 0x00);
+                saa_writel(SAA7134_RS_PITCH(5), TS_PACKET_SIZE);
+                saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_16 |
+                                                  SAA7134_RS_CONTROL_ME |
+                                                  (dev->ts.pt_ts.dma >> 12));
         }
 
         /* set task conditions + field handling */
diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c
index 097c2dfebd2c..add1757f8930 100644
--- a/drivers/media/video/saa7134/saa7134-empress.c
+++ b/drivers/media/video/saa7134/saa7134-empress.c
@@ -255,6 +255,16 @@ static int empress_s_fmt_vid_cap(struct file *file, void *priv,
         return 0;
 }
 
+static int empress_try_fmt_vid_cap(struct file *file, void *priv,
+                                struct v4l2_format *f)
+{
+        struct saa7134_dev *dev = file->private_data;
+
+        f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
+        f->fmt.pix.sizeimage    = TS_PACKET_SIZE * dev->ts.nr_packets;
+
+        return 0;
+}
 
 static int empress_reqbufs(struct file *file, void *priv,
                                         struct v4l2_requestbuffers *p)
@@ -450,6 +460,7 @@ static const struct v4l2_file_operations ts_fops =
 static const struct v4l2_ioctl_ops ts_ioctl_ops = {
         .vidioc_querycap                = empress_querycap,
         .vidioc_enum_fmt_vid_cap        = empress_enum_fmt_vid_cap,
+        .vidioc_try_fmt_vid_cap         = empress_try_fmt_vid_cap,
         .vidioc_s_fmt_vid_cap           = empress_s_fmt_vid_cap,
         .vidioc_g_fmt_vid_cap           = empress_g_fmt_vid_cap,
         .vidioc_reqbufs                 = empress_reqbufs,
diff --git a/drivers/media/video/saa7134/saa7134-ts.c b/drivers/media/video/saa7134/saa7134-ts.c
index b8ff459d0d30..3fa652279ac0 100644
--- a/drivers/media/video/saa7134/saa7134-ts.c
+++ b/drivers/media/video/saa7134/saa7134-ts.c
@@ -67,33 +67,8 @@ static int buffer_activate(struct saa7134_dev *dev,
 
         mod_timer(&dev->ts_q.timeout, jiffies+TS_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;
-                }
-
-                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;
diff --git a/drivers/media/video/saa7134/saa7134.h b/drivers/media/video/saa7134/saa7134.h
index ae7602d343c1..82268848f26a 100644
--- a/drivers/media/video/saa7134/saa7134.h
+++ b/drivers/media/video/saa7134/saa7134.h
@@ -493,12 +493,6 @@ struct saa7134_mpeg_ops {
         void                       (*signal_change)(struct saa7134_dev *dev);
 };
 
-enum saa7134_ts_status {
-        SAA7134_TS_STOPPED,
-        SAA7134_TS_BUFF_DONE,
-        SAA7134_TS_STARTED,
-};
-
 /* global device status */
 struct saa7134_dev {
         struct list_head           devlist;
@@ -593,8 +587,7 @@ struct saa7134_dev {
         /* SAA7134_MPEG_* */
         struct saa7134_ts          ts;
         struct saa7134_dmaqueue    ts_q;
-        enum saa7134_ts_status     ts_state;
-        unsigned int               buff_cnt;
+        int                        ts_started;
         struct saa7134_mpeg_ops    *mops;
 
         /* SAA7134_MPEG_EMPRESS only */
@@ -752,6 +745,9 @@ void saa7134_ts_unregister(struct saa7134_mpeg_ops *ops);
 
 int saa7134_ts_init_hw(struct saa7134_dev *dev);
 
+int saa7134_ts_start(struct saa7134_dev *dev);
+int saa7134_ts_stop(struct saa7134_dev *dev);
+
 /* ----------------------------------------------------------- */
 /* saa7134-vbi.c                                               */