firewire: cdev: increment fw_cdev_version, update documentation
authorStefan Richter <stefanr@s5r6.in-berlin.de>
Wed, 7 Jan 2009 19:14:53 +0000 (20:14 +0100)
committerStefan Richter <stefanr@s5r6.in-berlin.de>
Tue, 24 Mar 2009 19:56:46 +0000 (20:56 +0100)
commit77258da403be4cfce84b6abcdb515ad0bd1f92f1
tree42d94b4838517c278dca54c5d3e4dba0af686271
parent36a755cfc398fc50abc74055d4478c1b067dac55
firewire: cdev: increment fw_cdev_version, update documentation

Necessary due to
    Date: Tue, 22 Jul 2008 23:23:40 -0700
    From: David Moore <dcm@acm.org>
    Subject: firewire: Include iso timestamp in headers when header_size > 4

Side note:  The lack of upwards compatibility sounds worse than it is.
All existing client implementations, libraw1394 and libdc1394, set
header_size = 4.  And since the ABI v1 behaviour does not offer any
advantages over the new behaviour, we deliberately do not provide the
old behaviour anymore.

Also add documentation about the format of fw_cdev_get_cycle_timer which
may be used in conjunction with the timestamp of iso packets but has a
different format.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
include/linux/firewire-cdev.h