[media] rc: fix up and genericize some time unit conversions

The ene_ir driver was using a private define of MS_TO_NS, which is meant
to be microseconds to nanoseconds. The mceusb driver copied it,
intending to use is a milliseconds to microseconds. Lets move the
defines to a common location, expand and standardize them a touch, so
that we now have:

  MS_TO_NS - milliseconds to nanoseconds
  MS_TO_US - milliseconds to microseconds
  US_TO_NS - microseconds to nanoseconds

Reported-by: David Härdeman <david@hardeman.nu>
CC: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index a23c1fc685a1..2963263f31e2 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -183,6 +183,9 @@ static inline void init_ir_raw_event(struct ir_raw_event *ev)
 }
 
 #define IR_MAX_DURATION         0xFFFFFFFF      /* a bit more than 4 seconds */
+#define US_TO_NS(usec)          ((usec) * 1000)
+#define MS_TO_US(msec)          ((msec) * 1000)
+#define MS_TO_NS(msec)          ((msec) * 1000 * 1000)
 
 void ir_raw_event_handle(struct rc_dev *dev);
 int ir_raw_event_store(struct rc_dev *dev, struct ir_raw_event *ev);