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>

1 files changed, 11 insertions, 0 deletions

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,