diff options
| author | David Brownell <david-b@pacbell.net> | 2006-09-30 23:28:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-01 00:39:25 -0700 |
| commit | 9e86ecb659f11b36b5e189214b19cb31ef5dfd72 (patch) | |
| tree | 4442ea511c962765fa06c2ae65b301caaa65d542 | |
| parent | 0847062ad57e6d2d77875104d66f413a89769809 (diff) | |
| download | lwn-9e86ecb659f11b36b5e189214b19cb31ef5dfd72.tar.gz lwn-9e86ecb659f11b36b5e189214b19cb31ef5dfd72.zip | |
[PATCH] RTC class: Kconfig improvements
Small updates to make the RTC class Kconfig text be more informative. This
should help folk used to the drivers/char/rtc.c support, or a single RTC, be
slightly less surprised by the differences.
Also, adds a new RTC_DEBUG option to predefine DEBUG in the framework and its
drivers, while debugging. That's getting to be a standard idiom, and it's
pretty useful.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Oleg Verych <olecom@flower.upol.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/rtc/Kconfig | 26 | ||||
| -rw-r--r-- | drivers/rtc/Makefile | 4 |
2 files changed, 23 insertions, 7 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 62c804af9fbe..fc766a7a611e 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -37,6 +37,13 @@ config RTC_HCTOSYS_DEVICE The RTC device that will be used as the source for the system time, usually rtc0. +config RTC_DEBUG + bool "RTC debug support" + depends on RTC_CLASS = y + help + Say yes here to enable debugging support in the RTC framework + and individual RTC drivers. + comment "RTC interfaces" depends on RTC_CLASS @@ -45,8 +52,8 @@ config RTC_INTF_SYSFS depends on RTC_CLASS && SYSFS default RTC_CLASS help - Say yes here if you want to use your RTC using the sysfs - interface, /sys/class/rtc/rtcX . + Say yes here if you want to use your RTCs using sysfs interfaces, + /sys/class/rtc/rtc0 through /sys/.../rtcN. This driver can also be built as a module. If so, the module will be called rtc-sysfs. @@ -56,8 +63,9 @@ config RTC_INTF_PROC depends on RTC_CLASS && PROC_FS default RTC_CLASS help - Say yes here if you want to use your RTC using the proc - interface, /proc/driver/rtc . + Say yes here if you want to use your first RTC through the proc + interface, /proc/driver/rtc. Other RTCs will not be available + through that API. This driver can also be built as a module. If so, the module will be called rtc-proc. @@ -67,8 +75,11 @@ config RTC_INTF_DEV depends on RTC_CLASS default RTC_CLASS help - Say yes here if you want to use your RTC using the dev - interface, /dev/rtc . + Say yes here if you want to use your RTCs using the /dev + interfaces, which "udev" sets up as /dev/rtc0 through + /dev/rtcN. You may want to set up a symbolic link so one + of these can be accessed as /dev/rtc, which is a name + expected by "hwclock" and some other programs. This driver can also be built as a module. If so, the module will be called rtc-dev. @@ -78,7 +89,8 @@ config RTC_INTF_DEV_UIE_EMUL depends on RTC_INTF_DEV help Provides an emulation for RTC_UIE if the underlaying rtc chip - driver did not provide RTC_UIE ioctls. + driver does not expose RTC_UIE ioctls. Those requests generate + once-per-second update interrupts, used for synchronization. comment "RTC drivers" depends on RTC_CLASS diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index e72d467ab214..3ba5ff6e6800 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -2,6 +2,10 @@ # Makefile for RTC class/drivers. # +ifeq ($(CONFIG_RTC_DEBUG),y) + EXTRA_CFLAGS += -DDEBUG +endif + obj-$(CONFIG_RTC_LIB) += rtc-lib.o obj-$(CONFIG_RTC_HCTOSYS) += hctosys.o obj-$(CONFIG_RTC_CLASS) += rtc-core.o |