[linux-2.6-block.git] / drivers / pps / Kconfig

#
# PPS support configuration
#

menuconfig PPS
	tristate "PPS support"
	---help---
	  PPS (Pulse Per Second) is a special pulse provided by some GPS
	  antennae. Userland can use it to get a high-precision time
	  reference.

	  Some antennae's PPS signals are connected with the CD (Carrier
	  Detect) pin of the serial line they use to communicate with the
	  host. In this case use the SERIAL_LINE client support.

	  Some antennae's PPS signals are connected with some special host
	  inputs so you have to enable the corresponding client support.

	  To compile this driver as a module, choose M here: the module
	  will be called pps_core.ko.

if PPS

config PPS_DEBUG
	bool "PPS debugging messages"
	help
	  Say Y here if you want the PPS support to produce a bunch of debug
	  messages to the system log.  Select this if you are having a
	  problem with PPS support and want to see more of what is going on.

config NTP_PPS
	bool "PPS kernel consumer support"
	depends on !NO_HZ_COMMON
	help
	  This option adds support for direct in-kernel time
	  synchronization using an external PPS signal.

	  It doesn't work on tickless systems at the moment.

source drivers/pps/clients/Kconfig

source drivers/pps/generators/Kconfig

endif # PPS
Commit	Line	Data
eae9d2ba RG	1	#
	2	# PPS support configuration
	3	#
	4
98e959d4	5	menuconfig PPS
eae9d2ba	6	tristate "PPS support"
eae9d2ba RG	7	---help---
	8	PPS (Pulse Per Second) is a special pulse provided by some GPS
	9	antennae. Userland can use it to get a high-precision time
	10	reference.
	11
	12	Some antennae's PPS signals are connected with the CD (Carrier
	13	Detect) pin of the serial line they use to communicate with the
	14	host. In this case use the SERIAL_LINE client support.
	15
	16	Some antennae's PPS signals are connected with some special host
	17	inputs so you have to enable the corresponding client support.
	18
	19	To compile this driver as a module, choose M here: the module
	20	will be called pps_core.ko.
	21
ab4f5260 RD	22	if PPS
ab4f5260 RD	23
eae9d2ba RG	24	config PPS_DEBUG
eae9d2ba RG	25	bool "PPS debugging messages"
eae9d2ba RG	26	help
	27	Say Y here if you want the PPS support to produce a bunch of debug
	28	messages to the system log. Select this if you are having a
	29	problem with PPS support and want to see more of what is going on.
	30
025b40ab AG	31	config NTP_PPS
025b40ab AG	32	bool "PPS kernel consumer support"
ab4f5260	33	depends on !NO_HZ_COMMON
025b40ab AG	34	help
025b40ab AG	35	This option adds support for direct in-kernel time
25985edc	36	synchronization using an external PPS signal.
025b40ab AG	37
	38	It doesn't work on tickless systems at the moment.
	39
697fb85f RG	40	source drivers/pps/clients/Kconfig
697fb85f RG	41
46b402a0	42	source drivers/pps/generators/Kconfig
ab4f5260 RD	43
ab4f5260 RD	44	endif # PPS