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authorPieter Palmers <pieterp@joow.be>2007-02-03 17:44:39 +0100
committerStefan Richter <stefanr@s5r6.in-berlin.de>2007-02-17 14:39:33 +0100
commit3dc5ea9b31a8c83cffa338aba91adbc9bd387002 (patch)
tree5a9d9682d77fb3a1cfd3dc27654301f69ababf12 /sound/arm/aaci.h
parent91efa462054d44ae52b0c6c8325ed5e899f2cd17 (diff)
downloadlinux-3dc5ea9b31a8c83cffa338aba91adbc9bd387002.tar.gz
ieee1394: cycle timer read extension for raw1394
This implements the simultaneous read of the isochronous cycle timer and the system clock (in usecs). This allows to express the exact receive time of an ISO packet as a system time with microsecond accuracy. http://bugzilla.kernel.org/show_bug.cgi?id=7773 The counterpart patch for libraw1394 can be found at http://thread.gmane.org/gmane.linux.kernel.firewire.devel/8934 Patch update (Stefan R.): Disable preemption and local interrupts. Prevent integer overflow. Add paranoid error checks and kerneldoc to hpsb_read_cycle_timer. Move it to other ieee1394_core high-level API functions. Change comments. Adjust whitespace. Rename struct _raw1394_cycle_timer. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Acked-by: Pieter Palmers <pieterp@joow.be> Acked-by: Dan Dennedy <dan@dennedy.org>
Diffstat (limited to 'sound/arm/aaci.h')
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