From: Hans Verkuil <hverkuil@xs4all.nl>
Date: Sun, 11 Mar 2007 13:54:11 +0000 (-0300)
Subject: V4L/DVB (5419): Add comment how the speed field is interpreted.
X-Git-Tag: v2.6.22-rc1~1118^2~103
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6816b1991fd4bcb457c9534e8136476e45bfee0a;p=linux-2.6

V4L/DVB (5419): Add comment how the speed field is interpreted.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---

diff --git a/include/linux/dvb/video.h b/include/linux/dvb/video.h
index 4c31491433..93e4c3a6d1 100644
--- a/include/linux/dvb/video.h
+++ b/include/linux/dvb/video.h
@@ -110,6 +110,11 @@ struct video_command {
 		} stop;
 
 		struct {
+			/* 0 or 1000 specifies normal speed,
+			   1 specifies forward single stepping,
+			   -1 specifies backward single stepping,
+			   >1: playback at speed/1000 of the normal speed,
+			   <-1: reverse playback at (-speed/1000) of the normal speed. */
 			__s32 speed;
 			__u32 format;
 		} play;