user/sven/linux.git/include/linux/pps.h, branch v3.0.48Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v3.0.482011-01-13T16:03:21Zpps: add kernel consumer support2011-01-13T16:03:21ZAlexander Gordeevlasaine@lvk.cs.msu.su2011-01-13T01:00:58Zurn:sha1:717c033669ed3ceaee8df57d4562fafcc1a6267a
Add an optional feature of PPSAPI, kernel consumer support, which uses the
added hardpps() function.
Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Acked-by: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
pps.h needs <linux/types.h>2009-07-30T02:10:36ZDave Jonesdavej@redhat.com2009-07-29T22:04:12Zurn:sha1:f5a55efa140f5e9c9dd0f398fef54f20cdb74ec9
Found with make headers_check
/usr/include/linux/pps.h:52: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
LinuxPPS: core support2009-06-18T20:04:04ZRodolfo Giomettigiometti@linux.it2009-06-17T23:28:37Zurn:sha1:eae9d2ba0cfc27a2ad9765f23efb98fb80d80234
This patch adds the kernel side of the PPS support currently named
"LinuxPPS".
PPS means "pulse per second" and a PPS source is just a device which
provides a high precision signal each second so that an application can
use it to adjust system clock time.
Common use is the combination of the NTPD as userland program with a GPS
receiver as PPS source to obtain a wallclock-time with sub-millisecond
synchronisation to UTC.
To obtain this goal the userland programs shoud use the PPS API
specification (RFC 2783 - Pulse-Per-Second API for UNIX-like Operating
Systems, Version 1.0) which in part is implemented by this patch. It
provides a set of chars devices, one per PPS source, which can be used to
get the time signal. The RFC's functions can be implemented by accessing
to these char devices.
Signed-off-by: Rodolfo Giometti <giometti@linux.it>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Greg KH <greg@kroah.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Michael Kerrisk <mtk.manpages@googlemail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>