V4L/DVB (7710): pvrusb2: Implement critical digital streaming quirk for onair devices

Implement timed measurement of encoder operation for the first time it
is run.  This allows the driver to note when the encoder has been run
successfully for at least 1/4 second.  On top of that implement
various bits to ensure that the encoder has been run once before
digital streaming for OnAir devices.  This is done via several core
state machine tweaks.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
index c725495826ce..a67dcf84b596 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
@@ -238,6 +238,7 @@ struct pvr2_hdw {
         int state_encoder_run;        /* Encoder is running */
         int state_encoder_config;     /* Encoder is configured */
         int state_encoder_waitok;     /* Encoder pre-wait done */
+        int state_encoder_runok;      /* Encoder has run for >= .25 sec */
         int state_decoder_run;        /* Decoder is running */
         int state_usbstream_run;      /* FX2 is streaming */
         int state_decoder_quiescent;  /* Decoder idle for > 50msec */
@@ -267,6 +268,9 @@ struct pvr2_hdw {
         /* Timer for measuring encoder pre-wait time */
         struct timer_list encoder_wait_timer;
 
+        /* Timer for measuring encoder minimum run time */
+        struct timer_list encoder_run_timer;
+
         /* Place to block while waiting for state changes */
         wait_queue_head_t state_wait_data;