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authorAndy Walls <awalls@radix.net>2008-11-08 18:19:37 +0100
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-12-30 12:38:03 +0100
commit330c6ec8942765e81f237bd58020da1b161935ce (patch)
tree110bdf6daf5f280a9f3159136caa47e48e5fbaef /drivers/media/video/cx18/cx18-driver.h
parentV4L/DVB (9595): cx18: Improve handling of outgoing mailboxes detected to be busy (diff)
downloadlinux-330c6ec8942765e81f237bd58020da1b161935ce.tar.xz
linux-330c6ec8942765e81f237bd58020da1b161935ce.zip
V4L/DVB (9596): cx18: Further changes to improve mailbox protocol integrity & performnce
All waits for cx18 mailbox API commands are now uninterruptable. Added code to collect mailbox ack statistics. Tweaked timeouts based on collected stats and video vertical frame and field rates. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18/cx18-driver.h')
-rw-r--r--drivers/media/video/cx18/cx18-driver.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index e2ec15549783..ce76806759ec 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -360,6 +360,12 @@ struct cx18_mmio_stats {
atomic_t retried_read[CX18_MAX_MMIO_RD_RETRIES+1];
};
+#define CX18_MAX_MB_ACK_DELAY 100
+
+struct cx18_mbox_stats {
+ atomic_t mb_ack_delay[CX18_MAX_MB_ACK_DELAY+1];
+};
+
/* Struct to hold info about cx18 cards */
struct cx18 {
int num; /* board number, -1 during init! */
@@ -452,6 +458,7 @@ struct cx18 {
/* Statistics */
struct cx18_mmio_stats mmio_stats;
+ struct cx18_mbox_stats mbox_stats;
/* v4l2 and User settings */