[PATCH] RTC subsystem: sysfs interface

This patch adds the sysfs interface to the RTC subsystem.

Each RTC client will have his own entry under /sys/classs/rtc/rtcN .

Within this entry some attributes are exported by the subsystem, like date and
time.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index a256f67b78e4..824499920485 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -40,6 +40,17 @@ config RTC_HCTOSYS_DEVICE
 comment "RTC interfaces"
         depends on RTC_CLASS
 
+config RTC_INTF_SYSFS
+        tristate "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 .
+
+          This driver can also be built as a module. If so, the module
+          will be called rtc-sysfs.
+
 comment "RTC drivers"
         depends on RTC_CLASS