# PPS support configuration
#
-menu "PPS support"
-
-config PPS
+menuconfig PPS
tristate "PPS support"
---help---
PPS (Pulse Per Second) is a special pulse provided by some GPS
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"
+ depends on PPS
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
config NTP_PPS
bool "PPS kernel consumer support"
- depends on !NO_HZ_COMMON
+ depends on PPS && !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.
-endif
-
source drivers/pps/clients/Kconfig
source drivers/pps/generators/Kconfig
-
-endmenu
# PPS clients configuration
#
-if PPS
-
comment "PPS clients support"
+ depends on PPS
config PPS_CLIENT_KTIMER
tristate "Kernel timer client (Testing client, use for debug)"
+ depends on PPS
help
If you say yes here you get support for a PPS debugging client
which uses a kernel timer to generate the PPS signal.
GPIO. To be useful you must also register a platform device
specifying the GPIO pin and other options, usually in your board
setup.
-
-endif
#
comment "PPS generators support"
+ depends on PPS
config PPS_GENERATOR_PARPORT
tristate "Parallel port PPS signal generator"
- depends on PARPORT && BROKEN
+ depends on PPS && PARPORT && BROKEN
help
If you say yes here you get support for a PPS signal generator which
utilizes STROBE pin of a parallel port to send PPS signals. It uses