V4L/DVB (8797): A simple state machine was added to saa7134_ts.

A simple state machine was added to saa7134_ts. It has three states:

        SAA7134_TS_STOPPED
        SAA7134_TS_BUFF_DONE
        SAA7134_TS_STARTED

When buffer_setup is run we start the TS initialization: set SAA7134_TS_STOPPED.
When all buffers are prepared we write data into DMA register and set
SAA7134_TS_BUFF_DONE.
When the first buffer is active start TS and set SAA7134_TS_STARTED.
When ts_release is called stop TS and set SAA7134_TS_STOPPED.

Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/media/video/saa7134/saa7134.h b/drivers/media/video/saa7134/saa7134.h
index a0884f639f6..a1e0dad1267 100644
--- a/drivers/media/video/saa7134/saa7134.h
+++ b/drivers/media/video/saa7134/saa7134.h
@@ -462,6 +462,12 @@ 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;
@@ -555,6 +561,8 @@ struct saa7134_dev {
         /* SAA7134_MPEG_* */
         struct saa7134_ts          ts;
         struct saa7134_dmaqueue    ts_q;
+        enum saa7134_ts_status     ts_state;
+        unsigned int               buff_cnt;
         struct saa7134_mpeg_ops    *mops;
         struct i2c_client          *mpeg_i2c_client;