linux/drivers/rtc
David Brownell 7ca1d488ff rtc: suspend()/resume() restores system clock
RTC class suspend/resume support, re-initializing the system clock on resume
from the clock used to initialize it at boot time.

 - The reinit-on-resume is hooked to the existing RTC_HCTOSYS config
   option, on the grounds that a clock good enough for init must also
   be good enough for re-init.

 - Inlining a version of the code used by ARM, to save and restore the
   delta between a selected RTC and the current system wall-clock time.

 - Removes calls to that ARM code from AT91, OMAP1, and S3C RTCs.  This
   means that systems using those RTCs across suspend/resume will likely
   want to change their kernel configs to enable RTC_HCTOSYS.

   If HCTOSYS isn't using a second RTC (with battery?), this changes the
   system's initial date from Jan 1970 to the epoch this hardware uses:
   1998 for AT91, 2000 for OMAP1 (assuming no split power mode), etc.

This goes on top of the patch series removing "struct class_device" usage
from the RTC framework.  That's all needed for class suspend()/resume().

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-By: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:18 -07:00
..
class.c rtc: suspend()/resume() restores system clock 2007-05-08 11:15:18 -07:00
hctosys.c rtc: remove rest of class_device 2007-05-08 11:15:18 -07:00
interface.c rtc: remove rest of class_device 2007-05-08 11:15:18 -07:00
Kconfig rtc: suspend()/resume() restores system clock 2007-05-08 11:15:18 -07:00
Makefile rtc: simplified /proc/driver/rtc handling 2007-05-08 11:15:18 -07:00
rtc-at91rm9200.c rtc: suspend()/resume() restores system clock 2007-05-08 11:15:18 -07:00
rtc-bfin.c Blackfin: on-chip RTC controller driver 2007-05-07 12:12:58 -07:00
rtc-cmos.c rtc: remove rest of class_device 2007-05-08 11:15:18 -07:00
rtc-core.h rtc: simplified /proc/driver/rtc handling 2007-05-08 11:15:18 -07:00
rtc-dev.c rtc: remove rest of class_device 2007-05-08 11:15:18 -07:00
rtc-ds1307.c [PATCH] RTC: build fixes 2006-10-04 08:15:14 -07:00
rtc-ds1553.c rtc: rtc interfaces don't use class_device 2007-05-08 11:15:18 -07:00
rtc-ds1672.c i2c: Stop using i2c_adapter.class_dev 2007-02-13 22:09:04 +01:00
rtc-ds1742.c [PATCH] change __init to __devinit in 2 rtc drivers 2007-02-12 09:48:30 -08:00
rtc-ep93xx.c [PATCH] constify rtc_class_ops: update drivers 2006-10-01 00:39:25 -07:00
rtc-isl1208.c [PATCH] constify rtc_class_ops: update drivers 2006-10-01 00:39:25 -07:00
rtc-lib.c [PATCH] rtc: Add rtc_merge_alarm() 2006-12-10 09:55:40 -08:00
rtc-m48t86.c [PATCH] constify rtc_class_ops: update drivers 2006-10-01 00:39:25 -07:00
rtc-max6900.c rtc: add RTC class driver for the Maxim MAX6900 2007-05-08 11:15:03 -07:00
rtc-max6902.c [PATCH] rtc-max6902: month conversion fix 2006-10-17 08:18:44 -07:00
rtc-omap.c rtc: suspend()/resume() restores system clock 2007-05-08 11:15:18 -07:00
rtc-pcf8563.c i2c: Stop using i2c_adapter.class_dev 2007-02-13 22:09:04 +01:00
rtc-pcf8583.c [ARM] rtc-pcf8583: Final fixes for this RTC on RiscPC 2007-03-04 20:33:07 +00:00
rtc-pl031.c rtc: rtc interfaces don't use class_device 2007-05-08 11:15:18 -07:00
rtc-proc.c rtc: remove rest of class_device 2007-05-08 11:15:18 -07:00
rtc-rs5c313.c RTC: add rtc-rs5c313 driver 2007-05-08 11:15:03 -07:00
rtc-rs5c348.c [PATCH] constify rtc_class_ops: update drivers 2006-10-01 00:39:25 -07:00
rtc-rs5c372.c i2c: Stop using i2c_adapter.class_dev 2007-02-13 22:09:04 +01:00
rtc-s3c.c rtc: suspend()/resume() restores system clock 2007-05-08 11:15:18 -07:00
rtc-sa1100.c rtc: rtc interfaces don't use class_device 2007-05-08 11:15:18 -07:00
rtc-sh.c rtc: rtc interfaces don't use class_device 2007-05-08 11:15:18 -07:00
rtc-sysfs.c rtc: remove rest of class_device 2007-05-08 11:15:18 -07:00
rtc-test.c rtc: rtc interfaces don't use class_device 2007-05-08 11:15:18 -07:00
rtc-v3020.c [PATCH] rtc: fix printk of 64-bit res on 32-bit platform 2006-10-17 08:18:47 -07:00
rtc-vr41xx.c rtc: rtc interfaces don't use class_device 2007-05-08 11:15:18 -07:00
rtc-x1205.c i2c: Stop using i2c_adapter.class_dev 2007-02-13 22:09:04 +01:00