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author | Jiri Kosina <jkosina@suse.cz> | 2011-09-15 15:08:05 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2011-09-15 15:08:18 +0200 |
commit | e060c38434b2caa78efe7cedaff4191040b65a15 (patch) | |
tree | 407361230bf6733f63d8e788e4b5e6566ee04818 /Documentation/DocBook/v4l/dev-event.xml | |
parent | 10e4ac572eeffe5317019bd7330b6058a400dfc2 (diff) | |
parent | cc39c6a9bbdebfcf1a7dee64d83bf302bc38d941 (diff) | |
download | linux-e060c38434b2caa78efe7cedaff4191040b65a15.tar.gz linux-e060c38434b2caa78efe7cedaff4191040b65a15.tar.bz2 linux-e060c38434b2caa78efe7cedaff4191040b65a15.zip |
Merge branch 'master' into for-next
Fast-forward merge with Linus to be able to merge patches
based on more recent version of the tree.
Diffstat (limited to 'Documentation/DocBook/v4l/dev-event.xml')
-rw-r--r-- | Documentation/DocBook/v4l/dev-event.xml | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/Documentation/DocBook/v4l/dev-event.xml b/Documentation/DocBook/v4l/dev-event.xml deleted file mode 100644 index be5a98fb4fab..000000000000 --- a/Documentation/DocBook/v4l/dev-event.xml +++ /dev/null @@ -1,31 +0,0 @@ - <title>Event Interface</title> - - <para>The V4L2 event interface provides means for user to get - immediately notified on certain conditions taking place on a device. - This might include start of frame or loss of signal events, for - example. - </para> - - <para>To receive events, the events the user is interested in first must - be subscribed using the &VIDIOC-SUBSCRIBE-EVENT; ioctl. Once an event is - subscribed, the events of subscribed types are dequeueable using the - &VIDIOC-DQEVENT; ioctl. Events may be unsubscribed using - VIDIOC_UNSUBSCRIBE_EVENT ioctl. The special event type V4L2_EVENT_ALL may - be used to unsubscribe all the events the driver supports.</para> - - <para>The event subscriptions and event queues are specific to file - handles. Subscribing an event on one file handle does not affect - other file handles. - </para> - - <para>The information on dequeueable events is obtained by using select or - poll system calls on video devices. The V4L2 events use POLLPRI events on - poll system call and exceptions on select system call. </para> - - <!-- -Local Variables: -mode: sgml -sgml-parent-document: "v4l2.sgml" -indent-tabs-mode: nil -End: - --> |