Merge /pub/scm/linux/kernel/git/torvalds/linux-2.6

23 files changed, 1803 insertions, 658 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 95826b92ca4..95ce8f49e38 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -3,6 +3,7 @@
 #
 
 menu "Real Time Clock"
+	depends on !S390
 
 config RTC_LIB
 	tristate
@@ -21,21 +22,31 @@ config RTC_CLASS
 	  will be called rtc-class.
 
 config RTC_HCTOSYS
-	bool "Set system time from RTC on startup"
+	bool "Set system time from RTC on startup and resume"
 	depends on RTC_CLASS = y
 	default y
 	help
-	  If you say yes here, the system time will be set using
-	  the value read from the specified RTC device. This is useful
-	  in order to avoid unnecessary fsck runs.
+	  If you say yes here, the system time (wall clock) will be set using
+	  the value read from a specified RTC device. This is useful to avoid
+	  unnecessary fsck runs at boot time, and to network better.
 
 config RTC_HCTOSYS_DEVICE
-	string "The RTC to read the time from"
+	string "RTC used to set the system time"
 	depends on RTC_HCTOSYS = y
 	default "rtc0"
 	help
-	  The RTC device that will be used as the source for
-	  the system time, usually rtc0.
+	  The RTC device that will be used to (re)initialize the system
+	  clock, usually rtc0.  Initialization is done when the system
+	  starts up, and when it resumes from a low power state.
+
+	  This clock should be battery-backed, so that it reads the correct
+	  time when the system boots from a power-off state.  Otherwise, your
+	  system will need an external clock source (like an NTP server).
+
+	  If the clock you specify here is not battery backed, it may still
+	  be useful to reinitialize system time when resuming from system
+	  sleep states.  Do not specify an RTC here unless it stays powered
+	  during all this system's supported sleep states.
 
 config RTC_DEBUG
 	bool "RTC debug support"
@@ -48,7 +59,7 @@ comment "RTC interfaces"
 	depends on RTC_CLASS
 
 config RTC_INTF_SYSFS
-	tristate "sysfs"
+	boolean "sysfs"
 	depends on RTC_CLASS && SYSFS
 	default RTC_CLASS
 	help
@@ -59,7 +70,7 @@ config RTC_INTF_SYSFS
 	  will be called rtc-sysfs.
 
 config RTC_INTF_PROC
-	tristate "proc"
+	boolean "proc"
 	depends on RTC_CLASS && PROC_FS
 	default RTC_CLASS
 	help
@@ -71,7 +82,7 @@ config RTC_INTF_PROC
 	  will be called rtc-proc.
 
 config RTC_INTF_DEV
-	tristate "dev"
+	boolean "dev"
 	depends on RTC_CLASS
 	default RTC_CLASS
 	help
@@ -88,48 +99,30 @@ config RTC_INTF_DEV_UIE_EMUL
 	bool "RTC UIE emulation on dev interface"
 	depends on RTC_INTF_DEV
 	help
-	  Provides an emulation for RTC_UIE if the underlaying rtc chip
+	  Provides an emulation for RTC_UIE if the underlying rtc chip
 	  driver does not expose RTC_UIE ioctls.  Those requests generate
 	  once-per-second update interrupts, used for synchronization.
 
-comment "RTC drivers"
+config RTC_DRV_TEST
+	tristate "Test driver/device"
 	depends on RTC_CLASS
-
-# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
-# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
-# global rtc_lock ... it's not yet just another platform_device.
-
-config RTC_DRV_CMOS
-	tristate "PC-style 'CMOS' real time clock"
-	depends on RTC_CLASS && (X86 || ALPHA || ARM26 || ARM \
-		|| M32R || ATARI || POWERPC)
-	help
-	  Say "yes" here to get direct support for the real time clock
-	  found in every PC or ACPI-based system, and some other boards.
-	  Specifically the original MC146818, compatibles like those in
-	  PC south bridges, the DS12887 or M48T86, some multifunction
-	  or LPC bus chips, and so on.
-
-	  Your system will need to define the platform device used by
-	  this driver, otherwise it won't be accessible.  This means
-	  you can safely enable this driver if you don't know whether
-	  or not your board has this kind of hardware.
-
-	  This driver can also be built as a module. If so, the module
-	  will be called rtc-cmos.
-
-config RTC_DRV_X1205
-	tristate "Xicor/Intersil X1205"
-	depends on RTC_CLASS && I2C
 	help
 	  If you say yes here you get support for the
-	  Xicor/Intersil X1205 RTC chip.
+	  RTC test driver. It's a software RTC which can be
+	  used to test the RTC subsystem APIs. It gets
+	  the time from the system clock.
+	  You want this driver only if you are doing development
+	  on the RTC subsystem. Please read the source code
+	  for further details.
 
 	  This driver can also be built as a module. If so, the module
-	  will be called rtc-x1205.
+	  will be called rtc-test.
+
+comment "I2C RTC drivers"
+	depends on RTC_CLASS
 
 config RTC_DRV_DS1307
-	tristate "Dallas/Maxim DS1307 and similar I2C RTC chips"
+	tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00"
 	depends on RTC_CLASS && I2C
 	help
 	  If you say yes here you get support for various compatible RTC
@@ -146,53 +139,55 @@ config RTC_DRV_DS1307
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-ds1307.
 
-config RTC_DRV_DS1553
-	tristate "Dallas DS1553"
-	depends on RTC_CLASS
+config RTC_DRV_DS1672
+	tristate "Dallas/Maxim DS1672"
+	depends on RTC_CLASS && I2C
 	help
 	  If you say yes here you get support for the
-	  Dallas DS1553 timekeeping chip.
+	  Dallas/Maxim DS1672 timekeeping chip.
 
 	  This driver can also be built as a module. If so, the module
-	  will be called rtc-ds1553.
+	  will be called rtc-ds1672.
 
-config RTC_DRV_ISL1208
-	tristate "Intersil 1208"
+config RTC_DRV_MAX6900
+	tristate "Maxim 6900"
 	depends on RTC_CLASS && I2C
 	help
-	  If you say yes here you get support for the
-	  Intersil 1208 RTC chip.
+	  If you say yes here you will get support for the
+	  Maxim MAX6900 I2C RTC chip.
 
 	  This driver can also be built as a module. If so, the module
-	  will be called rtc-isl1208.
+	  will be called rtc-max6900.
 
-config RTC_DRV_DS1672
-	tristate "Dallas/Maxim DS1672"
+config RTC_DRV_RS5C372
+	tristate "Ricoh RS5C372A/B"
 	depends on RTC_CLASS && I2C
 	help
 	  If you say yes here you get support for the
-	  Dallas/Maxim DS1672 timekeeping chip.
+	  Ricoh RS5C372A and RS5C372B RTC chips.
 
 	  This driver can also be built as a module. If so, the module
-	  will be called rtc-ds1672.
+	  will be called rtc-rs5c372.
 
-config RTC_DRV_DS1742
-	tristate "Dallas DS1742/1743"
-	depends on RTC_CLASS
+config RTC_DRV_ISL1208
+	tristate "Intersil 1208"
+	depends on RTC_CLASS && I2C
 	help
 	  If you say yes here you get support for the
-	  Dallas DS1742/1743 timekeeping chip.
+	  Intersil 1208 RTC chip.
 
 	  This driver can also be built as a module. If so, the module
-	  will be called rtc-ds1742.
+	  will be called rtc-isl1208.
 
-config RTC_DRV_OMAP
-	tristate "TI OMAP1"
-	depends on RTC_CLASS && ( \
-		ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 )
+config RTC_DRV_X1205
+	tristate "Xicor/Intersil X1205"
+	depends on RTC_CLASS && I2C
 	help
-	  Say "yes" here to support the real time clock on TI OMAP1 chips.
-	  This driver can also be built as a module called rtc-omap.
+	  If you say yes here you get support for the
+	  Xicor/Intersil X1205 RTC chip.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-x1205.
 
 config RTC_DRV_PCF8563
 	tristate "Philips PCF8563/Epson RTC8564"
@@ -207,16 +202,20 @@ config RTC_DRV_PCF8563
 
 config RTC_DRV_PCF8583
 	tristate "Philips PCF8583"
-	depends on RTC_CLASS && I2C && ARCH_RPC
+	depends on RTC_CLASS && I2C
 	help
 	  If you say yes here you get support for the Philips PCF8583
-	  RTC chip found on Acorn RiscPCs.  This driver supports the
+	  RTC chip found on Acorn RiscPCs. This driver supports the
 	  platform specific method of retrieving the current year from
-	  the RTC's SRAM.
+	  the RTC's SRAM. It will work on other platforms with the same
+	  chip, but the year will probably have to be tweaked.
 
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-pcf8583.
 
+comment "SPI RTC drivers"
+	depends on RTC_CLASS
+
 config RTC_DRV_RS5C348
 	tristate "Ricoh RS5C348A/B"
 	depends on RTC_CLASS && SPI
@@ -227,15 +226,92 @@ config RTC_DRV_RS5C348
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-rs5c348.
 
-config RTC_DRV_RS5C372
-	tristate "Ricoh RS5C372A/B"
-	depends on RTC_CLASS && I2C
+config RTC_DRV_MAX6902
+	tristate "Maxim 6902"
+	depends on RTC_CLASS && SPI
+	help
+	  If you say yes here you will get support for the
+	  Maxim MAX6902 SPI RTC chip.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-max6902.
+
+comment "Platform RTC drivers"
+	depends on RTC_CLASS
+
+# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
+# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
+# global rtc_lock ... it's not yet just another platform_device.
+
+config RTC_DRV_CMOS
+	tristate "PC-style 'CMOS'"
+	depends on RTC_CLASS && (X86 || ALPHA || ARM26 || ARM \
+		|| M32R || ATARI || POWERPC || MIPS)
+	help
+	  Say "yes" here to get direct support for the real time clock
+	  found in every PC or ACPI-based system, and some other boards.
+	  Specifically the original MC146818, compatibles like those in
+	  PC south bridges, the DS12887 or M48T86, some multifunction
+	  or LPC bus chips, and so on.
+
+	  Your system will need to define the platform device used by
+	  this driver, otherwise it won't be accessible.  This means
+	  you can safely enable this driver if you don't know whether
+	  or not your board has this kind of hardware.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-cmos.
+
+config RTC_DRV_DS1553
+	tristate "Dallas DS1553"
+	depends on RTC_CLASS
 	help
 	  If you say yes here you get support for the
-	  Ricoh RS5C372A and RS5C372B RTC chips.
+	  Dallas DS1553 timekeeping chip.
 
 	  This driver can also be built as a module. If so, the module
-	  will be called rtc-rs5c372.
+	  will be called rtc-ds1553.
+
+config RTC_DRV_DS1742
+	tristate "Dallas DS1742/1743"
+	depends on RTC_CLASS
+	help
+	  If you say yes here you get support for the
+	  Dallas DS1742/1743 timekeeping chip.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-ds1742.
+
+config RTC_DRV_M48T86
+	tristate "ST M48T86/Dallas DS12887"
+	depends on RTC_CLASS
+	help
+	  If you say Y here you will get support for the
+	  ST M48T86 and Dallas DS12887 RTC chips.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-m48t86.
+
+config RTC_DRV_V3020
+	tristate "EM Microelectronic V3020"
+	depends on RTC_CLASS
+	help
+	  If you say yes here you will get support for the
+	  EM Microelectronic v3020 RTC chip.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-v3020.
+
+comment "on-CPU RTC drivers"
+	depends on RTC_CLASS
+
+config RTC_DRV_OMAP
+	tristate "TI OMAP1"
+	depends on RTC_CLASS && ( \
+		ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 )
+	help
+	  Say "yes" here to support the real time clock on TI OMAP1 chips.
+	  This driver can also be built as a module called rtc-omap.
 
 config RTC_DRV_S3C
 	tristate "Samsung S3C series SoC RTC"
@@ -253,16 +329,6 @@ config RTC_DRV_S3C
 	  This driver can also be build as a module. If so, the module
 	  will be called rtc-s3c.
 
-config RTC_DRV_M48T86
-	tristate "ST M48T86/Dallas DS12887"
-	depends on RTC_CLASS
-	help
-	  If you say Y here you will get support for the
-	  ST M48T86 and Dallas DS12887 RTC chips.
-
-	  This driver can also be built as a module. If so, the module
-	  will be called rtc-m48t86.
-
 config RTC_DRV_EP93XX
 	tristate "Cirrus Logic EP93XX"
 	depends on RTC_CLASS && ARCH_EP93XX
@@ -308,7 +374,7 @@ config RTC_DRV_PL031
 	depends on RTC_CLASS && ARM_AMBA
 	help
 	  If you say Y here you will get access to ARM AMBA
-	  PrimeCell PL031 UART found on certain ARM SOCs.
+	  PrimeCell PL031 RTC found on certain ARM SOCs.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called rtc-pl031.
@@ -319,39 +385,20 @@ config RTC_DRV_AT91RM9200
 	help
 	  Driver for the Atmel AT91RM9200's internal RTC (Realtime Clock).
 
-config RTC_DRV_TEST
-	tristate "Test driver/device"
-	depends on RTC_CLASS
-	help
-	  If you say yes here you get support for the
-	  RTC test driver. It's a software RTC which can be
-	  used to test the RTC subsystem APIs. It gets
-	  the time from the system clock.
-	  You want this driver only if you are doing development
-	  on the RTC subsystem. Please read the source code
-	  for further details.
-
-	  This driver can also be built as a module. If so, the module
-	  will be called rtc-test.
-
-config RTC_DRV_MAX6902
-	tristate "Maxim 6902"
-	depends on RTC_CLASS && SPI
+config RTC_DRV_BFIN
+	tristate "Blackfin On-Chip RTC"
+	depends on RTC_CLASS && BFIN
 	help
 	  If you say yes here you will get support for the
-	  Maxim MAX6902 spi RTC chip.
+	  Blackfin On-Chip Real Time Clock.
 
 	  This driver can also be built as a module. If so, the module
-	  will be called rtc-max6902.
+	  will be called rtc-bfin.
 
-config RTC_DRV_V3020
-	tristate "EM Microelectronic V3020"
-	depends on RTC_CLASS
+config RTC_DRV_RS5C313
+	tristate "Ricoh RS5C313"
+	depends on RTC_CLASS && SH_LANDISK
 	help
-	  If you say yes here you will get support for the
-	  EM Microelectronic v3020 RTC chip.
-
-	  This driver can also be built as a module. If so, the module
-	  will be called rtc-v3020.
+	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
 
 endmenu
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 92bfe1b3a5f..a1afbc23607 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -11,9 +11,9 @@ obj-$(CONFIG_RTC_HCTOSYS)	+= hctosys.o
 obj-$(CONFIG_RTC_CLASS)		+= rtc-core.o
 rtc-core-y			:= class.o interface.o
 
-obj-$(CONFIG_RTC_INTF_SYSFS)	+= rtc-sysfs.o
-obj-$(CONFIG_RTC_INTF_PROC)	+= rtc-proc.o
-obj-$(CONFIG_RTC_INTF_DEV)	+= rtc-dev.o
+rtc-core-$(CONFIG_RTC_INTF_DEV)	+= rtc-dev.o
+rtc-core-$(CONFIG_RTC_INTF_PROC) += rtc-proc.o
+rtc-core-$(CONFIG_RTC_INTF_SYSFS) += rtc-sysfs.o
 
 obj-$(CONFIG_RTC_DRV_CMOS)	+= rtc-cmos.o
 obj-$(CONFIG_RTC_DRV_X1205)	+= rtc-x1205.o
@@ -30,11 +30,14 @@ obj-$(CONFIG_RTC_DRV_S3C)	+= rtc-s3c.o
 obj-$(CONFIG_RTC_DRV_RS5C348)	+= rtc-rs5c348.o
 obj-$(CONFIG_RTC_DRV_M48T86)	+= rtc-m48t86.o
 obj-$(CONFIG_RTC_DRV_DS1553)	+= rtc-ds1553.o
+obj-$(CONFIG_RTC_DRV_RS5C313)	+= rtc-rs5c313.o
 obj-$(CONFIG_RTC_DRV_EP93XX)	+= rtc-ep93xx.o
 obj-$(CONFIG_RTC_DRV_SA1100)	+= rtc-sa1100.o
 obj-$(CONFIG_RTC_DRV_VR41XX)	+= rtc-vr41xx.o
 obj-$(CONFIG_RTC_DRV_PL031)	+= rtc-pl031.o
+obj-$(CONFIG_RTC_DRV_MAX6900)	+= rtc-max6900.o
 obj-$(CONFIG_RTC_DRV_MAX6902)	+= rtc-max6902.o
 obj-$(CONFIG_RTC_DRV_V3020)	+= rtc-v3020.o
 obj-$(CONFIG_RTC_DRV_AT91RM9200)+= rtc-at91rm9200.o
 obj-$(CONFIG_RTC_DRV_SH)	+= rtc-sh.o
+obj-$(CONFIG_RTC_DRV_BFIN)	+= rtc-bfin.o
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 04aaa634723..8b3cd31d6a6 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -16,19 +16,94 @@
 #include <linux/kdev_t.h>
 #include <linux/idr.h>
 
+#include "rtc-core.h"
+
+
 static DEFINE_IDR(rtc_idr);
 static DEFINE_MUTEX(idr_lock);
 struct class *rtc_class;
 
-static void rtc_device_release(struct class_device *class_dev)
+static void rtc_device_release(struct device *dev)
 {
-	struct rtc_device *rtc = to_rtc_device(class_dev);
+	struct rtc_device *rtc = to_rtc_device(dev);
 	mutex_lock(&idr_lock);
 	idr_remove(&rtc_idr, rtc->id);
 	mutex_unlock(&idr_lock);
 	kfree(rtc);
 }
 
+#if defined(CONFIG_PM) && defined(CONFIG_RTC_HCTOSYS_DEVICE)
+
+/*
+ * On suspend(), measure the delta between one RTC and the
+ * system's wall clock; restore it on resume().
+ */
+
+static struct timespec	delta;
+static time_t		oldtime;
+
+static int rtc_suspend(struct device *dev, pm_message_t mesg)
+{
+	struct rtc_device	*rtc = to_rtc_device(dev);
+	struct rtc_time		tm;
+
+	if (strncmp(rtc->dev.bus_id,
+				CONFIG_RTC_HCTOSYS_DEVICE,
+				BUS_ID_SIZE) != 0)
+		return 0;
+
+	rtc_read_time(rtc, &tm);
+	rtc_tm_to_time(&tm, &oldtime);
+
+	/* RTC precision is 1 second; adjust delta for avg 1/2 sec err */
+	set_normalized_timespec(&delta,
+				xtime.tv_sec - oldtime,
+				xtime.tv_nsec - (NSEC_PER_SEC >> 1));
+
+	return 0;
+}
+
+static int rtc_resume(struct device *dev)
+{
+	struct rtc_device	*rtc = to_rtc_device(dev);
+	struct rtc_time		tm;
+	time_t			newtime;
+	struct timespec		time;
+
+	if (strncmp(rtc->dev.bus_id,
+				CONFIG_RTC_HCTOSYS_DEVICE,
+				BUS_ID_SIZE) != 0)
+		return 0;
+
+	rtc_read_time(rtc, &tm);
+	if (rtc_valid_tm(&tm) != 0) {
+		pr_debug("%s:  bogus resume time\n", rtc->dev.bus_id);
+		return 0;
+	}
+	rtc_tm_to_time(&tm, &newtime);
+	if (newtime <= oldtime) {
+		if (newtime < oldtime)
+			pr_debug("%s:  time travel!\n", rtc->dev.bus_id);
+		return 0;
+	}
+
+	/* restore wall clock using delta against this RTC;
+	 * adjust again for avg 1/2 second RTC sampling error
+	 */
+	set_normalized_timespec(&time,
+				newtime + delta.tv_sec,
+				(NSEC_PER_SEC >> 1) + delta.tv_nsec);
+	do_settimeofday(&time);
+
+	return 0;
+}
+
+#else
+#define rtc_suspend	NULL
+#define rtc_resume	NULL
+#endif
+
+
 /**
  * rtc_device_register - register w/ RTC class
  * @dev: the device to register
@@ -70,23 +145,29 @@ struct rtc_device *rtc_device_register(const char *name, struct device *dev,
 	rtc->ops = ops;
 	rtc->owner = owner;
 	rtc->max_user_freq = 64;
-	rtc->class_dev.dev = dev;
-	rtc->class_dev.class = rtc_class;
-	rtc->class_dev.release = rtc_device_release;
+	rtc->dev.parent = dev;
+	rtc->dev.class = rtc_class;
+	rtc->dev.release = rtc_device_release;
 
 	mutex_init(&rtc->ops_lock);
 	spin_lock_init(&rtc->irq_lock);
 	spin_lock_init(&rtc->irq_task_lock);
 
 	strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
-	snprintf(rtc->class_dev.class_id, BUS_ID_SIZE, "rtc%d", id);
+	snprintf(rtc->dev.bus_id, BUS_ID_SIZE, "rtc%d", id);
 
-	err = class_device_register(&rtc->class_dev);
+	rtc_dev_prepare(rtc);
+
+	err = device_register(&rtc->dev);
 	if (err)
 		goto exit_kfree;
 
+	rtc_dev_add_device(rtc);
+	rtc_sysfs_add_device(rtc);
+	rtc_proc_add_device(rtc);
+
 	dev_info(dev, "rtc core: registered %s as %s\n",
-			rtc->name, rtc->class_dev.class_id);
+			rtc->name, rtc->dev.bus_id);
 
 	return rtc;
 
@@ -113,26 +194,22 @@ EXPORT_SYMBOL_GPL(rtc_device_register);
  */
 void rtc_device_unregister(struct rtc_device *rtc)
 {
-	if (class_device_get(&rtc->class_dev) != NULL) {
+	if (get_device(&rtc->dev) != NULL) {
 		mutex_lock(&rtc->ops_lock);
 		/* remove innards of this RTC, then disable it, before
 		 * letting any rtc_class_open() users access it again
 		 */
-		class_device_unregister(&rtc->class_dev);
+		rtc_sysfs_del_device(rtc);
+		rtc_dev_del_device(rtc);
+		rtc_proc_del_device(rtc);
+		device_unregister(&rtc->dev);
 		rtc->ops = NULL;
 		mutex_unlock(&rtc->ops_lock);
-		class_device_put(&rtc->class_dev);
+		put_device(&rtc->dev);
 	}
 }
 EXPORT_SYMBOL_GPL(rtc_device_unregister);
 
-int rtc_interface_register(struct class_interface *intf)
-{
-	intf->class = rtc_class;
-	return class_interface_register(intf);
-}
-EXPORT_SYMBOL_GPL(rtc_interface_register);
-
 static int __init rtc_init(void)
 {
 	rtc_class = class_create(THIS_MODULE, "rtc");
@@ -140,11 +217,16 @@ static int __init rtc_init(void)
 		printk(KERN_ERR "%s: couldn't create class\n", __FILE__);
 		return PTR_ERR(rtc_class);
 	}
+	rtc_class->suspend = rtc_suspend;
+	rtc_class->resume = rtc_resume;
+	rtc_dev_init();
+	rtc_sysfs_init(rtc_class);
 	return 0;
 }
 
 static void __exit rtc_exit(void)
 {
+	rtc_dev_exit();
 	class_destroy(rtc_class);
 }
 
diff --git a/drivers/rtc/hctosys.c b/drivers/rtc/hctosys.c
index d02fe9a0001..178527252c6 100644
--- a/drivers/rtc/hctosys.c
+++ b/drivers/rtc/hctosys.c
@@ -26,15 +26,15 @@ static int __init rtc_hctosys(void)
 {
 	int err;
 	struct rtc_time tm;
-	struct class_device *class_dev = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
+	struct rtc_device *rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
 
-	if (class_dev == NULL) {
+	if (rtc == NULL) {
 		printk("%s: unable to open rtc device (%s)\n",
 			__FILE__, CONFIG_RTC_HCTOSYS_DEVICE);
 		return -ENODEV;
 	}
 
-	err = rtc_read_time(class_dev, &tm);
+	err = rtc_read_time(rtc, &tm);
 	if (err == 0) {
 		err = rtc_valid_tm(&tm);
 		if (err == 0) {
@@ -46,7 +46,7 @@ static int __init rtc_hctosys(void)
 
 			do_settimeofday(&tv);
 
-			dev_info(class_dev->dev,
+			dev_info(rtc->dev.parent,
 				"setting the system clock to "
 				"%d-%02d-%02d %02d:%02d:%02d (%u)\n",
 				tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
@@ -54,14 +54,14 @@ static int __init rtc_hctosys(void)
 				(unsigned int) tv.tv_sec);
 		}
 		else
-			dev_err(class_dev->dev,
+			dev_err(rtc->dev.parent,
 				"hctosys: invalid date/time\n");
 	}
 	else
-		dev_err(class_dev->dev,
+		dev_err(rtc->dev.parent,
 			"hctosys: unable to read the hardware clock\n");
 
-	rtc_class_close(class_dev);
+	rtc_class_close(rtc);
 
 	return 0;
 }
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index ef40df0f169..ad66c6ecf36 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -13,10 +13,9 @@
 
 #include <linux/rtc.h>
 
-int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm)
+int rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm)
 {
 	int err;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
 
 	err = mutex_lock_interruptible(&rtc->ops_lock);
 	if (err)
@@ -28,7 +27,7 @@ int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm)
 		err = -EINVAL;
 	else {
 		memset(tm, 0, sizeof(struct rtc_time));
-		err = rtc->ops->read_time(class_dev->dev, tm);
+		err = rtc->ops->read_time(rtc->dev.parent, tm);
 	}
 
 	mutex_unlock(&rtc->ops_lock);
@@ -36,10 +35,9 @@ int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm)
 }
 EXPORT_SYMBOL_GPL(rtc_read_time);
 
-int rtc_set_time(struct class_device *class_dev, struct rtc_time *tm)
+int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm)
 {
 	int err;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
 
 	err = rtc_valid_tm(tm);
 	if (err != 0)
@@ -54,17 +52,16 @@ int rtc_set_time(struct class_device *class_dev, struct rtc_time *tm)
 	else if (!rtc->ops->set_time)
 		err = -EINVAL;
 	else
-		err = rtc->ops->set_time(class_dev->dev, tm);
+		err = rtc->ops->set_time(rtc->dev.parent, tm);
 
 	mutex_unlock(&rtc->ops_lock);
 	return err;
 }
 EXPORT_SYMBOL_GPL(rtc_set_time);
 
-int rtc_set_mmss(struct class_device *class_dev, unsigned long secs)
+int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs)
 {
 	int err;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
 
 	err = mutex_lock_interruptible(&rtc->ops_lock);
 	if (err)
@@ -73,11 +70,11 @@ int rtc_set_mmss(struct class_device *class_dev, unsigned long secs)
 	if (!rtc->ops)
 		err = -ENODEV;
 	else if (rtc->ops->set_mmss)
-		err = rtc->ops->set_mmss(class_dev->dev, secs);
+		err = rtc->ops->set_mmss(rtc->dev.parent, secs);
 	else if (rtc->ops->read_time && rtc->ops->set_time) {
 		struct rtc_time new, old;
 
-		err = rtc->ops->read_time(class_dev->dev, &old);
+		err = rtc->ops->read_time(rtc->dev.parent, &old);
 		if (err == 0) {
 			rtc_time_to_tm(secs, &new);
 
@@ -89,7 +86,8 @@ int rtc_set_mmss(struct class_device *class_dev, unsigned long secs)
 			 */
 			if (!((old.tm_hour == 23 && old.tm_min == 59) ||
 				(new.tm_hour == 23 && new.tm_min == 59)))
-				err = rtc->ops->set_time(class_dev->dev, &new);
+				err = rtc->ops->set_time(rtc->dev.parent,
+						&new);
 		}
 	}
 	else
@@ -101,10 +99,9 @@ int rtc_set_mmss(struct class_device *class_dev, unsigned long secs)
 }
 EXPORT_SYMBOL_GPL(rtc_set_mmss);
 
-int rtc_read_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm)
+int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
 {
 	int err;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
 
 	err = mutex_lock_interruptible(&rtc->ops_lock);
 	if (err)
@@ -116,7 +113,7 @@ int rtc_read_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm)
 		err = -EINVAL;
 	else {
 		memset(alarm, 0, sizeof(struct rtc_wkalrm));
-		err = rtc->ops->read_alarm(class_dev->dev, alarm);
+		err = rtc->ops->read_alarm(rtc->dev.parent, alarm);
 	}
 
 	mutex_unlock(&rtc->ops_lock);
@@ -124,10 +121,13 @@ int rtc_read_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm)
 }
 EXPORT_SYMBOL_GPL(rtc_read_alarm);
 
-int rtc_set_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm)
+int rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
 {
 	int err;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
+
+	err = rtc_valid_tm(&alarm->time);
+	if (err != 0)
+		return err;
 
 	err = mutex_lock_interruptible(&rtc->ops_lock);
 	if (err)
@@ -138,7 +138,7 @@ int rtc_set_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm)
 	else if (!rtc->ops->set_alarm)
 		err = -EINVAL;
 	else
-		err = rtc->ops->set_alarm(class_dev->dev, alarm);
+		err = rtc->ops->set_alarm(rtc->dev.parent, alarm);
 
 	mutex_unlock(&rtc->ops_lock);
 	return err;
@@ -147,16 +147,14 @@ EXPORT_SYMBOL_GPL(rtc_set_alarm);
 
 /**
  * rtc_update_irq - report RTC periodic, alarm, and/or update irqs
- * @class_dev: the rtc's class device
+ * @rtc: the rtc device
  * @num: how many irqs are being reported (usually one)
  * @events: mask of RTC_IRQF with one or more of RTC_PF, RTC_AF, RTC_UF
  * Context: in_interrupt(), irqs blocked
  */
-void rtc_update_irq(struct class_device *class_dev,
+void rtc_update_irq(struct rtc_device *rtc,
 		unsigned long num, unsigned long events)
 {
-	struct rtc_device *rtc = to_rtc_device(class_dev);
-
 	spin_lock(&rtc->irq_lock);
 	rtc->irq_data = (rtc->irq_data + (num << 8)) | events;
 	spin_unlock(&rtc->irq_lock);
@@ -171,40 +169,43 @@ void rtc_update_irq(struct class_device *class_dev,
 }
 EXPORT_SYMBOL_GPL(rtc_update_irq);
 
-struct class_device *rtc_class_open(char *name)
+struct rtc_device *rtc_class_open(char *name)
 {
-	struct class_device *class_dev = NULL,
-				*class_dev_tmp;
+	struct device *dev;
+	struct rtc_device *rtc = NULL;
 
 	down(&rtc_class->sem);
-	list_for_each_entry(class_dev_tmp, &rtc_class->children, node) {
-		if (strncmp(class_dev_tmp->class_id, name, BUS_ID_SIZE) == 0) {
-			class_dev = class_device_get(class_dev_tmp);
+	list_for_each_entry(dev, &rtc_class->devices, node) {
+		if (strncmp(dev->bus_id, name, BUS_ID_SIZE) == 0) {
+			dev = get_device(dev);
+			if (dev)
+				rtc = to_rtc_device(dev);
 			break;
 		}
 	}
 
-	if (class_dev) {
-		if (!try_module_get(to_rtc_device(class_dev)->owner))
-			class_dev = NULL;
+	if (rtc) {
+		if (!try_module_get(rtc->owner)) {
+			put_device(dev);
+			rtc = NULL;
+		}
 	}
 	up(&rtc_class->sem);
 
-	return class_dev;
+	return rtc;
 }
 EXPORT_SYMBOL_GPL(rtc_class_open);
 
-void rtc_class_close(struct class_device *class_dev)
+void rtc_class_close(struct rtc_device *rtc)
 {
-	module_put(to_rtc_device(class_dev)->owner);
-	class_device_put(class_dev);
+	module_put(rtc->owner);
+	put_device(&rtc->dev);
 }
 EXPORT_SYMBOL_GPL(rtc_class_close);
 
-int rtc_irq_register(struct class_device *class_dev, struct rtc_task *task)
+int rtc_irq_register(struct rtc_device *rtc, struct rtc_task *task)
 {
 	int retval = -EBUSY;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
 
 	if (task == NULL || task->func == NULL)
 		return -EINVAL;
@@ -220,9 +221,8 @@ int rtc_irq_register(struct class_device *class_dev, struct rtc_task *task)
 }
 EXPORT_SYMBOL_GPL(rtc_irq_register);
 
-void rtc_irq_unregister(struct class_device *class_dev, struct rtc_task *task)
+void rtc_irq_unregister(struct rtc_device *rtc, struct rtc_task *task)
 {
-	struct rtc_device *rtc = to_rtc_device(class_dev);
 
 	spin_lock_irq(&rtc->irq_task_lock);
 	if (rtc->irq_task == task)
@@ -231,11 +231,10 @@ void rtc_irq_unregister(struct class_device *class_dev, struct rtc_task *task)
 }
 EXPORT_SYMBOL_GPL(rtc_irq_unregister);
 
-int rtc_irq_set_state(struct class_device *class_dev, struct rtc_task *task, int enabled)
+int rtc_irq_set_state(struct rtc_device *rtc, struct rtc_task *task, int enabled)
 {
 	int err = 0;
 	unsigned long flags;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
 
 	if (rtc->ops->irq_set_state == NULL)
 		return -ENXIO;
@@ -246,17 +245,16 @@ int rtc_irq_set_state(struct class_device *class_dev, struct rtc_task *task, int
 	spin_unlock_irqrestore(&rtc->irq_task_lock, flags);
 
 	if (err == 0)
-		err = rtc->ops->irq_set_state(class_dev->dev, enabled);
+		err = rtc->ops->irq_set_state(rtc->dev.parent, enabled);
 
 	return err;
 }
 EXPORT_SYMBOL_GPL(rtc_irq_set_state);
 
-int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int freq)
+int rtc_irq_set_freq(struct rtc_device *rtc, struct rtc_task *task, int freq)
 {
 	int err = 0;
 	unsigned long flags;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
 
 	if (rtc->ops->irq_set_freq == NULL)
 		return -ENXIO;
@@ -267,7 +265,7 @@ int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int
 	spin_unlock_irqrestore(&rtc->irq_task_lock, flags);
 
 	if (err == 0) {
-		err = rtc->ops->irq_set_freq(class_dev->dev, freq);
+		err = rtc->ops->irq_set_freq(rtc->dev.parent, freq);
 		if (err == 0)
 			rtc->irq_freq = freq;
 	}
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
index ac0e68e2f02..33795e5a559 100644
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -263,7 +263,7 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id)
 
 		at91_sys_write(AT91_RTC_SCCR, rtsr);	/* clear status reg */
 
-		rtc_update_irq(&rtc->class_dev, 1, events);
+		rtc_update_irq(rtc, 1, events);
 
 		pr_debug("%s(): num=%ld, events=0x%02lx\n", __FUNCTION__,
 			events >> 8, events & 0x000000FF);
@@ -348,21 +348,10 @@ static int __exit at91_rtc_remove(struct platform_device *pdev)
 
 /* AT91RM9200 RTC Power management control */
 
-static struct timespec at91_rtc_delta;
 static u32 at91_rtc_imr;
 
 static int at91_rtc_suspend(struct platform_device *pdev, pm_message_t state)
 {
-	struct rtc_time tm;
-	struct timespec time;
-
-	time.tv_nsec = 0;
-
-	/* calculate time delta for suspend */
-	at91_rtc_readtime(&pdev->dev, &tm);
-	rtc_tm_to_time(&tm, &time.tv_sec);
-	save_time_delta(&at91_rtc_delta, &time);
-
 	/* this IRQ is shared with DBGU and other hardware which isn't
 	 * necessarily doing PM like we are...
 	 */
@@ -374,36 +363,17 @@ static int at91_rtc_suspend(struct platform_device *pdev, pm_message_t state)
 		else
 			at91_sys_write(AT91_RTC_IDR, at91_rtc_imr);
 	}
-
-	pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __FUNCTION__,
-		1900 + tm.tm_year, tm.tm_mon, tm.tm_mday,
-		tm.tm_hour, tm.tm_min, tm.tm_sec);
-
 	return 0;
 }
 
 static int at91_rtc_resume(struct platform_device *pdev)
 {
-	struct rtc_time tm;
-	struct timespec time;
-
-	time.tv_nsec = 0;
-
-	at91_rtc_readtime(&pdev->dev, &tm);
-	rtc_tm_to_time(&tm, &time.tv_sec);
-	restore_time_delta(&at91_rtc_delta, &time);
-
 	if (at91_rtc_imr) {
 		if (device_may_wakeup(&pdev->dev))
 			disable_irq_wake(AT91_ID_SYS);
 		else
 			at91_sys_write(AT91_RTC_IER, at91_rtc_imr);
 	}
-
-	pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __FUNCTION__,
-		1900 + tm.tm_year, tm.tm_mon, tm.tm_mday,
-		tm.tm_hour, tm.tm_min, tm.tm_sec);
-
 	return 0;
 }
 #else
diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c
new file mode 100644
index 00000000000..260ead95991
--- /dev/null
+++ b/drivers/rtc/rtc-bfin.c
@@ -0,0 +1,445 @@
+/*
+ * Blackfin On-Chip Real Time Clock Driver
+ *  Supports BF531/BF532/BF533/BF534/BF536/BF537
+ *
+ * Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+/* The biggest issue we deal with in this driver is that register writes are
+ * synced to the RTC frequency of 1Hz.  So if you write to a register and
+ * attempt to write again before the first write has completed, the new write
+ * is simply discarded.  This can easily be troublesome if userspace disables
+ * one event (say periodic) and then right after enables an event (say alarm).
+ * Since all events are maintained in the same interrupt mask register, if
+ * we wrote to it to disable the first event and then wrote to it again to
+ * enable the second event, that second event would not be enabled as the
+ * write would be discarded and things quickly fall apart.
+ *
+ * To keep this delay from significantly degrading performance (we, in theory,
+ * would have to sleep for up to 1 second everytime we wanted to write a
+ * register), we only check the write pending status before we start to issue
+ * a new write.  We bank on the idea that it doesnt matter when the sync
+ * happens so long as we don't attempt another write before it does.  The only
+ * time userspace would take this penalty is when they try and do multiple
+ * operations right after another ... but in this case, they need to take the
+ * sync penalty, so we should be OK.
+ *
+ * Also note that the RTC_ISTAT register does not suffer this penalty; its
+ * writes to clear status registers complete immediately.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/bcd.h>
+#include <linux/rtc.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/seq_file.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+
+#include <asm/blackfin.h>
+
+#define stamp(fmt, args...) pr_debug("%s:%i: " fmt "\n", __FUNCTION__, __LINE__, ## args)
+#define stampit() stamp("here i am")
+
+struct bfin_rtc {
+	struct rtc_device *rtc_dev;
+	struct rtc_time rtc_alarm;
+	spinlock_t lock;
+};
+
+/* Bit values for the ISTAT / ICTL registers */
+#define RTC_ISTAT_WRITE_COMPLETE  0x8000
+#define RTC_ISTAT_WRITE_PENDING   0x4000
+#define RTC_ISTAT_ALARM_DAY       0x0040
+#define RTC_ISTAT_24HR            0x0020
+#define RTC_ISTAT_HOUR            0x0010
+#define RTC_ISTAT_MIN             0x0008
+#define RTC_ISTAT_SEC             0x0004
+#define RTC_ISTAT_ALARM           0x0002
+#define RTC_ISTAT_STOPWATCH       0x0001
+
+/* Shift values for RTC_STAT register */
+#define DAY_BITS_OFF    17
+#define HOUR_BITS_OFF   12
+#define MIN_BITS_OFF    6
+#define SEC_BITS_OFF    0
+
+/* Some helper functions to convert between the common RTC notion of time
+ * and the internal Blackfin notion that is stored in 32bits.
+ */
+static inline u32 rtc_time_to_bfin(unsigned long now)
+{
+	u32 sec  = (now % 60);
+	u32 min  = (now % (60 * 60)) / 60;
+	u32 hour = (now % (60 * 60 * 24)) / (60 * 60);
+	u32 days = (now / (60 * 60 * 24));
+	return (sec  << SEC_BITS_OFF) +
+	       (min  << MIN_BITS_OFF) +
+	       (hour << HOUR_BITS_OFF) +
+	       (days << DAY_BITS_OFF);
+}
+static inline unsigned long rtc_bfin_to_time(u32 rtc_bfin)
+{
+	return (((rtc_bfin >> SEC_BITS_OFF)  & 0x003F)) +
+	       (((rtc_bfin >> MIN_BITS_OFF)  & 0x003F) * 60) +
+	       (((rtc_bfin >> HOUR_BITS_OFF) & 0x001F) * 60 * 60) +
+	       (((rtc_bfin >> DAY_BITS_OFF)  & 0x7FFF) * 60 * 60 * 24);
+}
+static inline void rtc_bfin_to_tm(u32 rtc_bfin, struct rtc_time *tm)
+{
+	rtc_time_to_tm(rtc_bfin_to_time(rtc_bfin), tm);
+}
+
+/* Wait for the previous write to a RTC register to complete.
+ * Unfortunately, we can't sleep here as that introduces a race condition when
+ * turning on interrupt events.  Consider this:
+ *  - process sets alarm
+ *  - process enables alarm
+ *  - process sleeps while waiting for rtc write to sync
+ *  - interrupt fires while process is sleeping
+ *  - interrupt acks the event by writing to ISTAT
+ *  - interrupt sets the WRITE PENDING bit
+ *  - interrupt handler finishes
+ *  - process wakes up, sees WRITE PENDING bit set, goes to sleep
+ *  - interrupt fires while process is sleeping
+ * If anyone can point out the obvious solution here, i'm listening :).  This
+ * shouldn't be an issue on an SMP or preempt system as this function should
+ * only be called with the rtc lock held.
+ */
+static void rtc_bfin_sync_pending(void)
+{
+	stampit();
+	while (!(bfin_read_RTC_ISTAT() & RTC_ISTAT_WRITE_COMPLETE)) {
+		if (!(bfin_read_RTC_ISTAT() & RTC_ISTAT_WRITE_PENDING))
+			break;
+	}
+	bfin_write_RTC_ISTAT(RTC_ISTAT_WRITE_COMPLETE);
+}
+
+static void rtc_bfin_reset(struct bfin_rtc *rtc)
+{
+	/* Initialize the RTC. Enable pre-scaler to scale RTC clock
+	 * to 1Hz and clear interrupt/status registers. */
+	spin_lock_irq(&rtc->lock);
+	rtc_bfin_sync_pending();
+	bfin_write_RTC_PREN(0x1);
+	bfin_write_RTC_ICTL(0);
+	bfin_write_RTC_SWCNT(0);
+	bfin_write_RTC_ALARM(0);
+	bfin_write_RTC_ISTAT(0xFFFF);
+	spin_unlock_irq(&rtc->lock);
+}
+
+static irqreturn_t bfin_rtc_interrupt(int irq, void *dev_id)
+{
+	struct platform_device *pdev = to_platform_device(dev_id);
+	struct bfin_rtc *rtc = platform_get_drvdata(pdev);
+	unsigned long events = 0;
+	u16 rtc_istat;
+
+	stampit();
+
+	spin_lock_irq(&rtc->lock);
+
+	rtc_istat = bfin_read_RTC_ISTAT();
+
+	if (rtc_istat & (RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY)) {
+		bfin_write_RTC_ISTAT(RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY);
+		events |= RTC_AF | RTC_IRQF;
+	}
+
+	if (rtc_istat & RTC_ISTAT_STOPWATCH) {
+		bfin_write_RTC_ISTAT(RTC_ISTAT_STOPWATCH);
+		events |= RTC_PF | RTC_IRQF;
+		bfin_write_RTC_SWCNT(rtc->rtc_dev->irq_freq);
+	}
+
+	if (rtc_istat & RTC_ISTAT_SEC) {
+		bfin_write_RTC_ISTAT(RTC_ISTAT_SEC);
+		events |= RTC_UF | RTC_IRQF;
+	}
+
+	rtc_update_irq(rtc->rtc_dev, 1, events);
+
+	spin_unlock_irq(&rtc->lock);
+
+	return IRQ_HANDLED;
+}
+
+static int bfin_rtc_open(struct device *dev)
+{
+	struct bfin_rtc *rtc = dev_get_drvdata(dev);
+	int ret;
+
+	stampit();
+
+	ret = request_irq(IRQ_RTC, bfin_rtc_interrupt, IRQF_DISABLED, "rtc-bfin", dev);
+	if (unlikely(ret)) {
+		dev_err(dev, "request RTC IRQ failed with %d\n", ret);
+		return ret;
+	}
+
+	rtc_bfin_reset(rtc);
+
+	return ret;
+}
+
+static void bfin_rtc_release(struct device *dev)
+{
+	struct bfin_rtc *rtc = dev_get_drvdata(dev);
+	stampit();
+	rtc_bfin_reset(rtc);
+	free_irq(IRQ_RTC, dev);
+}
+
+static int bfin_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
+{
+	struct bfin_rtc *rtc = dev_get_drvdata(dev);
+
+	stampit();
+
+	switch (cmd) {
+	case RTC_PIE_ON:
+		stampit();
+		spin_lock_irq(&rtc->lock);
+		rtc_bfin_sync_pending();
+		bfin_write_RTC_ISTAT(RTC_ISTAT_STOPWATCH);
+		bfin_write_RTC_SWCNT(rtc->rtc_dev->irq_freq);
+		bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() | RTC_ISTAT_STOPWATCH);
+		spin_unlock_irq(&rtc->lock);
+		return 0;
+	case RTC_PIE_OFF:
+		stampit();
+		spin_lock_irq(&rtc->lock);
+		rtc_bfin_sync_pending();
+		bfin_write_RTC_SWCNT(0);
+		bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() & ~RTC_ISTAT_STOPWATCH);
+		spin_unlock_irq(&rtc->lock);
+		return 0;
+
+	case RTC_UIE_ON:
+		stampit();
+		spin_lock_irq(&rtc->lock);
+		rtc_bfin_sync_pending();
+		bfin_write_RTC_ISTAT(RTC_ISTAT_SEC);
+		bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() | RTC_ISTAT_SEC);
+		spin_unlock_irq(&rtc->lock);
+		return 0;
+	case RTC_UIE_OFF:
+		stampit();
+		spin_lock_irq(&rtc->lock);
+		rtc_bfin_sync_pending();
+		bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() & ~RTC_ISTAT_SEC);
+		spin_unlock_irq(&rtc->lock);
+		return 0;
+
+	case RTC_AIE_ON: {
+		unsigned long rtc_alarm;
+		u16 which_alarm;
+		int ret = 0;
+
+		stampit();
+
+		spin_lock_irq(&rtc->lock);
+
+		rtc_bfin_sync_pending();
+		if (rtc->rtc_alarm.tm_yday == -1) {
+			struct rtc_time now;
+			rtc_bfin_to_tm(bfin_read_RTC_STAT(), &now);
+			now.tm_sec = rtc->rtc_alarm.tm_sec;
+			now.tm_min = rtc->rtc_alarm.tm_min;
+			now.tm_hour = rtc->rtc_alarm.tm_hour;
+			ret = rtc_tm_to_time(&now, &rtc_alarm);
+			which_alarm = RTC_ISTAT_ALARM;
+		} else {
+			ret = rtc_tm_to_time(&rtc->rtc_alarm, &rtc_alarm);
+			which_alarm = RTC_ISTAT_ALARM_DAY;
+		}
+		if (ret == 0) {
+			bfin_write_RTC_ISTAT(which_alarm);
+			bfin_write_RTC_ALARM(rtc_time_to_bfin(rtc_alarm));
+			bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() | which_alarm);
+		}
+
+		spin_unlock_irq(&rtc->lock);
+
+		return ret;
+	}
+	case RTC_AIE_OFF:
+		stampit();
+		spin_lock_irq(&rtc->lock);
+		rtc_bfin_sync_pending();
+		bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() & ~(RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY));
+		spin_unlock_irq(&rtc->lock);
+		return 0;
+	}
+
+	return -ENOIOCTLCMD;
+}
+
+static int bfin_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	struct bfin_rtc *rtc = dev_get_drvdata(dev);
+
+	stampit();
+
+	spin_lock_irq(&rtc->lock);
+	rtc_bfin_sync_pending();
+	rtc_bfin_to_tm(bfin_read_RTC_STAT(), tm);
+	spin_unlock_irq(&rtc->lock);
+
+	return 0;
+}
+
+static int bfin_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	struct bfin_rtc *rtc = dev_get_drvdata(dev);
+	int ret;
+	unsigned long now;
+
+	stampit();
+
+	spin_lock_irq(&rtc->lock);
+
+	ret = rtc_tm_to_time(tm, &now);
+	if (ret == 0) {
+		rtc_bfin_sync_pending();
+		bfin_write_RTC_STAT(rtc_time_to_bfin(now));
+	}
+
+	spin_unlock_irq(&rtc->lock);
+
+	return ret;
+}
+
+static int bfin_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+	struct bfin_rtc *rtc = dev_get_drvdata(dev);
+	stampit();
+	memcpy(&alrm->time, &rtc->rtc_alarm, sizeof(struct rtc_time));
+	alrm->pending = !!(bfin_read_RTC_ICTL() & (RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY));
+	return 0;
+}
+
+static int bfin_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+	struct bfin_rtc *rtc = dev_get_drvdata(dev);
+	stampit();
+	memcpy(&rtc->rtc_alarm, &alrm->time, sizeof(struct rtc_time));
+	return 0;
+}
+
+static int bfin_rtc_proc(struct device *dev, struct seq_file *seq)
+{
+#define yesno(x) (x ? "yes" : "no")
+	u16 ictl = bfin_read_RTC_ICTL();
+	stampit();
+	seq_printf(seq, "alarm_IRQ\t: %s\n", yesno(ictl & RTC_ISTAT_ALARM));
+	seq_printf(seq, "wkalarm_IRQ\t: %s\n", yesno(ictl & RTC_ISTAT_ALARM_DAY));
+	seq_printf(seq, "seconds_IRQ\t: %s\n", yesno(ictl & RTC_ISTAT_SEC));
+	seq_printf(seq, "periodic_IRQ\t: %s\n", yesno(ictl & RTC_ISTAT_STOPWATCH));
+#ifdef DEBUG
+	seq_printf(seq, "RTC_STAT\t: 0x%08X\n", bfin_read_RTC_STAT());
+	seq_printf(seq, "RTC_ICTL\t: 0x%04X\n", bfin_read_RTC_ICTL());
+	seq_printf(seq, "RTC_ISTAT\t: 0x%04X\n", bfin_read_RTC_ISTAT());
+	seq_printf(seq, "RTC_SWCNT\t: 0x%04X\n", bfin_read_RTC_SWCNT());
+	seq_printf(seq, "RTC_ALARM\t: 0x%08X\n", bfin_read_RTC_ALARM());
+	seq_printf(seq, "RTC_PREN\t: 0x%04X\n", bfin_read_RTC_PREN());
+#endif
+	return 0;
+}
+
+static int bfin_irq_set_freq(struct device *dev, int freq)
+{
+	struct bfin_rtc *rtc = dev_get_drvdata(dev);
+	stampit();
+	rtc->rtc_dev->irq_freq = freq;
+	return 0;
+}
+
+static struct rtc_class_ops bfin_rtc_ops = {
+	.open          = bfin_rtc_open,
+	.release       = bfin_rtc_release,
+	.ioctl         = bfin_rtc_ioctl,
+	.read_time     = bfin_rtc_read_time,
+	.set_time      = bfin_rtc_set_time,
+	.read_alarm    = bfin_rtc_read_alarm,
+	.set_alarm     = bfin_rtc_set_alarm,
+	.proc          = bfin_rtc_proc,
+	.irq_set_freq  = bfin_irq_set_freq,
+};
+
+static int __devinit bfin_rtc_probe(struct platform_device *pdev)
+{
+	struct bfin_rtc *rtc;
+	int ret = 0;
+
+	stampit();
+
+	rtc = kzalloc(sizeof(*rtc), GFP_KERNEL);
+	if (unlikely(!rtc))
+		return -ENOMEM;
+
+	spin_lock_init(&rtc->lock);
+
+	rtc->rtc_dev = rtc_device_register(pdev->name, &pdev->dev, &bfin_rtc_ops, THIS_MODULE);
+	if (unlikely(IS_ERR(rtc))) {
+		ret = PTR_ERR(rtc->rtc_dev);
+		goto err;
+	}
+	rtc->rtc_dev->irq_freq = 0;
+	rtc->rtc_dev->max_user_freq = (2 << 16); /* stopwatch is an unsigned 16 bit reg */
+
+	platform_set_drvdata(pdev, rtc);
+
+	return 0;
+
+err:
+	kfree(rtc);
+	return ret;
+}
+
+static int __devexit bfin_rtc_remove(struct platform_device *pdev)
+{
+	struct bfin_rtc *rtc = platform_get_drvdata(pdev);
+
+	rtc_device_unregister(rtc->rtc_dev);
+	platform_set_drvdata(pdev, NULL);
+	kfree(rtc);
+
+	return 0;
+}
+
+static struct platform_driver bfin_rtc_driver = {
+	.driver		= {
+		.name	= "rtc-bfin",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= bfin_rtc_probe,
+	.remove		= __devexit_p(bfin_rtc_remove),
+};
+
+static int __init bfin_rtc_init(void)
+{
+	stampit();
+	return platform_driver_register(&bfin_rtc_driver);
+}
+
+static void __exit bfin_rtc_exit(void)
+{
+	platform_driver_unregister(&bfin_rtc_driver);
+}
+
+module_init(bfin_rtc_init);
+module_exit(bfin_rtc_exit);
+
+MODULE_DESCRIPTION("Blackfin On-Chip Real Time Clock Driver");
+MODULE_AUTHOR("Mike Frysinger <vapier@gentoo.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 7c0d6091007..6085261aa2c 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -46,6 +46,10 @@ struct cmos_rtc {
 	int			irq;
 	struct resource		*iomem;
 
+	void			(*wake_on)(struct device *);
+	void			(*wake_off)(struct device *);
+
+	u8			enabled_wake;
 	u8			suspend_ctrl;
 
 	/* newer hardware extends the original register set */
@@ -203,7 +207,7 @@ static int cmos_set_alarm(struct device *dev, struct rtc_wkalrm *t)
 	rtc_intr = CMOS_READ(RTC_INTR_FLAGS);
 	rtc_intr &= (rtc_control & RTC_IRQMASK) | RTC_IRQF;
 	if (is_intr(rtc_intr))
-		rtc_update_irq(&cmos->rtc->class_dev, 1, rtc_intr);
+		rtc_update_irq(cmos->rtc, 1, rtc_intr);
 
 	/* update alarm */
 	CMOS_WRITE(hrs, RTC_HOURS_ALARM);
@@ -223,7 +227,7 @@ static int cmos_set_alarm(struct device *dev, struct rtc_wkalrm *t)
 		rtc_intr = CMOS_READ(RTC_INTR_FLAGS);
 		rtc_intr &= (rtc_control & RTC_IRQMASK) | RTC_IRQF;
 		if (is_intr(rtc_intr))
-			rtc_update_irq(&cmos->rtc->class_dev, 1, rtc_intr);
+			rtc_update_irq(cmos->rtc, 1, rtc_intr);
 	}
 
 	spin_unlock_irq(&rtc_lock);
@@ -304,7 +308,7 @@ cmos_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
 	rtc_intr = CMOS_READ(RTC_INTR_FLAGS);
 	rtc_intr &= (rtc_control & RTC_IRQMASK) | RTC_IRQF;
 	if (is_intr(rtc_intr))
-		rtc_update_irq(&cmos->rtc->class_dev, 1, rtc_intr);
+		rtc_update_irq(cmos->rtc, 1, rtc_intr);
 	spin_unlock_irqrestore(&rtc_lock, flags);
 	return 0;
 }
@@ -379,12 +383,12 @@ static irqreturn_t cmos_interrupt(int irq, void *p)
 		return IRQ_NONE;
 }
 
-#ifdef	CONFIG_PNPACPI
-#define	is_pnpacpi()	1
+#ifdef	CONFIG_PNP
+#define	is_pnp()	1
 #define	INITSECTION
 
 #else
-#define	is_pnpacpi()	0
+#define	is_pnp()	0
 #define	INITSECTION	__init
 #endif
 
@@ -405,13 +409,20 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 	cmos_rtc.irq = rtc_irq;
 	cmos_rtc.iomem = ports;
 
-	/* For ACPI systems the info comes from the FADT.  On others,
-	 * board specific setup provides it as appropriate.
+	/* For ACPI systems extension info comes from the FADT.  On others,
+	 * board specific setup provides it as appropriate.  Systems where
+	 * the alarm IRQ isn't automatically a wakeup IRQ (like ACPI, and
+	 * some almost-clones) can provide hooks to make that behave.
 	 */
 	if (info) {
 		cmos_rtc.day_alrm = info->rtc_day_alarm;
 		cmos_rtc.mon_alrm = info->rtc_mon_alarm;
 		cmos_rtc.century = info->rtc_century;
+
+		if (info->wake_on && info->wake_off) {
+			cmos_rtc.wake_on = info->wake_on;
+			cmos_rtc.wake_off = info->wake_off;
+		}
 	}
 
 	cmos_rtc.rtc = rtc_device_register(driver_name, dev,
@@ -427,14 +438,14 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 	 * REVISIT for non-x86 systems we may need to handle io memory
 	 * resources: ioremap them, and request_mem_region().
 	 */
-	if (is_pnpacpi()) {
+	if (is_pnp()) {
 		retval = request_resource(&ioport_resource, ports);
 		if (retval < 0) {
 			dev_dbg(dev, "i/o registers already in use\n");
 			goto cleanup0;
 		}
 	}
-	rename_region(ports, cmos_rtc.rtc->class_dev.class_id);
+	rename_region(ports, cmos_rtc.rtc->dev.bus_id);
 
 	spin_lock_irq(&rtc_lock);
 
@@ -470,8 +481,8 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 
 	if (is_valid_irq(rtc_irq))
 		retval = request_irq(rtc_irq, cmos_interrupt, IRQF_DISABLED,
-				cmos_rtc.rtc->class_dev.class_id,
-				&cmos_rtc.rtc->class_dev);
+				cmos_rtc.rtc->dev.bus_id,
+				cmos_rtc.rtc);
 	if (retval < 0) {
 		dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq);
 		goto cleanup1;
@@ -483,7 +494,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 	 */
 
 	pr_info("%s: alarms up to one %s%s\n",
-			cmos_rtc.rtc->class_dev.class_id,
+			cmos_rtc.rtc->dev.bus_id,
 			is_valid_irq(rtc_irq)
 				?  (cmos_rtc.mon_alrm
 					? "year"
@@ -520,12 +531,12 @@ static void __exit cmos_do_remove(struct device *dev)
 
 	cmos_do_shutdown();
 
-	if (is_pnpacpi())
+	if (is_pnp())
 		release_resource(cmos->iomem);
 	rename_region(cmos->iomem, NULL);
 
 	if (is_valid_irq(cmos->irq))
-		free_irq(cmos->irq, &cmos_rtc.rtc->class_dev);
+		free_irq(cmos->irq, cmos_rtc.rtc);
 
 	rtc_device_unregister(cmos_rtc.rtc);
 
@@ -555,16 +566,20 @@ static int cmos_suspend(struct device *dev, pm_message_t mesg)
 		irqstat = CMOS_READ(RTC_INTR_FLAGS);
 		irqstat &= (tmp & RTC_IRQMASK) | RTC_IRQF;
 		if (is_intr(irqstat))
-			rtc_update_irq(&cmos->rtc->class_dev, 1, irqstat);
+			rtc_update_irq(cmos->rtc, 1, irqstat);
 	}
 	spin_unlock_irq(&rtc_lock);
 
-	/* ACPI HOOK:  enable ACPI_EVENT_RTC when (tmp & RTC_AIE)
-	 * ... it'd be best if we could do that under rtc_lock.
-	 */
+	if (tmp & RTC_AIE) {
+		cmos->enabled_wake = 1;
+		if (cmos->wake_on)
+			cmos->wake_on(dev);
+		else
+			enable_irq_wake(cmos->irq);
+	}
 
 	pr_debug("%s: suspend%s, ctrl %02x\n",
-			cmos_rtc.rtc->class_dev.class_id,
+			cmos_rtc.rtc->dev.bus_id,
 			(tmp & RTC_AIE) ? ", alarm may wake" : "",
 			tmp);
 
@@ -576,26 +591,28 @@ static int cmos_resume(struct device *dev)
 	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
 	unsigned char	tmp = cmos->suspend_ctrl;
 
-	/* REVISIT:  a mechanism to resync the system clock (jiffies)
-	 * on resume should be portable between platforms ...
-	 */
-
 	/* re-enable any irqs previously active */
 	if (tmp & (RTC_PIE|RTC_AIE|RTC_UIE)) {
 
-		/* ACPI HOOK:  disable ACPI_EVENT_RTC when (tmp & RTC_AIE) */
+		if (cmos->enabled_wake) {
+			if (cmos->wake_off)
+				cmos->wake_off(dev);
+			else
+				disable_irq_wake(cmos->irq);
+			cmos->enabled_wake = 0;
+		}
 
 		spin_lock_irq(&rtc_lock);
 		CMOS_WRITE(tmp, RTC_CONTROL);
 		tmp = CMOS_READ(RTC_INTR_FLAGS);
 		tmp &= (cmos->suspend_ctrl & RTC_IRQMASK) | RTC_IRQF;
 		if (is_intr(tmp))
-			rtc_update_irq(&cmos->rtc->class_dev, 1, tmp);
+			rtc_update_irq(cmos->rtc, 1, tmp);
 		spin_unlock_irq(&rtc_lock);
 	}
 
 	pr_debug("%s: resume, ctrl %02x\n",
-			cmos_rtc.rtc->class_dev.class_id,
+			cmos_rtc.rtc->dev.bus_id,
 			cmos->suspend_ctrl);
 
 
@@ -613,7 +630,7 @@ static int cmos_resume(struct device *dev)
  * the device node will always be created as a PNPACPI device.
  */
 
-#ifdef	CONFIG_PNPACPI
+#ifdef	CONFIG_PNP
 
 #include <linux/pnp.h>
 
@@ -684,11 +701,11 @@ static void __exit cmos_exit(void)
 }
 module_exit(cmos_exit);
 
-#else	/* no PNPACPI */
+#else	/* no PNP */
 
 /*----------------------------------------------------------------*/
 
-/* Platform setup should have set up an RTC device, when PNPACPI is
+/* Platform setup should have set up an RTC device, when PNP is
  * unavailable ... this could happen even on (older) PCs.
  */
 
@@ -734,7 +751,7 @@ static void __exit cmos_exit(void)
 module_exit(cmos_exit);
 
 
-#endif	/* !PNPACPI */
+#endif	/* !PNP */
 
 MODULE_AUTHOR("David Brownell");
 MODULE_DESCRIPTION("Driver for PC-style 'CMOS' RTCs");
diff --git a/drivers/rtc/rtc-core.h b/drivers/rtc/rtc-core.h
new file mode 100644
index 00000000000..5f9df7430a2
--- /dev/null
+++ b/drivers/rtc/rtc-core.h
@@ -0,0 +1,70 @@
+#ifdef CONFIG_RTC_INTF_DEV
+
+extern void __init rtc_dev_init(void);
+extern void __exit rtc_dev_exit(void);
+extern void rtc_dev_prepare(struct rtc_device *rtc);
+extern void rtc_dev_add_device(struct rtc_device *rtc);
+extern void rtc_dev_del_device(struct rtc_device *rtc);
+
+#else
+
+static inline void rtc_dev_init(void)
+{
+}
+
+static inline void rtc_dev_exit(void)
+{
+}
+
+static inline void rtc_dev_prepare(struct rtc_device *rtc)
+{
+}
+
+static inline void rtc_dev_add_device(struct rtc_device *rtc)
+{
+}
+
+static inline void rtc_dev_del_device(struct rtc_device *rtc)
+{
+}
+
+#endif
+
+#ifdef CONFIG_RTC_INTF_PROC
+
+extern void rtc_proc_add_device(struct rtc_device *rtc);
+extern void rtc_proc_del_device(struct rtc_device *rtc);
+
+#else
+
+static inline void rtc_proc_add_device(struct rtc_device *rtc)
+{
+}
+
+static inline void rtc_proc_del_device(struct rtc_device *rtc)
+{
+}
+
+#endif
+
+#ifdef CONFIG_RTC_INTF_SYSFS
+
+extern void __init rtc_sysfs_init(struct class *);
+extern void rtc_sysfs_add_device(struct rtc_device *rtc);
+extern void rtc_sysfs_del_device(struct rtc_device *rtc);
+
+#else
+
+static inline void rtc_sysfs_init(struct class *rtc)
+{
+}
+
+static inline void rtc_sysfs_add_device(struct rtc_device *rtc)
+{
+}
+
+static inline void rtc_sysfs_del_device(struct rtc_device *rtc)
+{
+}
+
+#endif
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 137330b8636..f4e5f0040ff 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -13,8 +13,8 @@
 
 #include <linux/module.h>
 #include <linux/rtc.h>
+#include "rtc-core.h"
 
-static struct class *rtc_dev_class;
 static dev_t rtc_devt;
 
 #define RTC_DEV_MAX 16 /* 16 RTCs should be enough for everyone... */
@@ -32,9 +32,9 @@ static int rtc_dev_open(struct inode *inode, struct file *file)
 	if (!(mutex_trylock(&rtc->char_lock)))
 		return -EBUSY;
 
-	file->private_data = &rtc->class_dev;
+	file->private_data = rtc;
 
-	err = ops->open ? ops->open(rtc->class_dev.dev) : 0;
+	err = ops->open ? ops->open(rtc->dev.parent) : 0;
 	if (err == 0) {
 		spin_lock_irq(&rtc->irq_lock);
 		rtc->irq_data = 0;
@@ -61,7 +61,7 @@ static void rtc_uie_task(struct work_struct *work)
 	int num = 0;
 	int err;
 
-	err = rtc_read_time(&rtc->class_dev, &tm);
+	err = rtc_read_time(rtc, &tm);
 
 	local_irq_disable();
 	spin_lock(&rtc->irq_lock);
@@ -79,7 +79,7 @@ static void rtc_uie_task(struct work_struct *work)
 	}
 	spin_unlock(&rtc->irq_lock);
 	if (num)
-		rtc_update_irq(&rtc->class_dev, num, RTC_UF | RTC_IRQF);
+		rtc_update_irq(rtc, num, RTC_UF | RTC_IRQF);
 	local_irq_enable();
 }
 static void rtc_uie_timer(unsigned long data)
@@ -121,7 +121,7 @@ static int set_uie(struct rtc_device *rtc)
 	struct rtc_time tm;
 	int err;
 
-	err = rtc_read_time(&rtc->class_dev, &tm);
+	err = rtc_read_time(rtc, &tm);
 	if (err)
 		return err;
 	spin_lock_irq(&rtc->irq_lock);
@@ -180,7 +180,7 @@ rtc_dev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 	if (ret == 0) {
 		/* Check for any data updates */
 		if (rtc->ops->read_callback)
-			data = rtc->ops->read_callback(rtc->class_dev.dev,
+			data = rtc->ops->read_callback(rtc->dev.parent,
 						       data);
 
 		if (sizeof(int) != sizeof(long) &&
@@ -210,8 +210,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
 		unsigned int cmd, unsigned long arg)
 {
 	int err = 0;
-	struct class_device *class_dev = file->private_data;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
+	struct rtc_device *rtc = file->private_data;
 	const struct rtc_class_ops *ops = rtc->ops;
 	struct rtc_time tm;
 	struct rtc_wkalrm alarm;
@@ -252,7 +251,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
 
 	/* try the driver's ioctl interface */
 	if (ops->ioctl) {
-		err = ops->ioctl(class_dev->dev, cmd, arg);
+		err = ops->ioctl(rtc->dev.parent, cmd, arg);
 		if (err != -ENOIOCTLCMD)
 			return err;
 	}
@@ -264,7 +263,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
 
 	switch (cmd) {
 	case RTC_ALM_READ:
-		err = rtc_read_alarm(class_dev, &alarm);
+		err = rtc_read_alarm(rtc, &alarm);
 		if (err < 0)
 			return err;
 
@@ -278,17 +277,53 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
 
 		alarm.enabled = 0;
 		alarm.pending = 0;
-		alarm.time.tm_mday = -1;
-		alarm.time.tm_mon = -1;
-		alarm.time.tm_year = -1;
 		alarm.time.tm_wday = -1;
 		alarm.time.tm_yday = -1;
 		alarm.time.tm_isdst = -1;
-		err = rtc_set_alarm(class_dev, &alarm);
+
+		/* RTC_ALM_SET alarms may be up to 24 hours in the future.
+		 * Rather than expecting every RTC to implement "don't care"
+		 * for day/month/year fields, just force the alarm to have
+		 * the right values for those fields.
+		 *
+		 * RTC_WKALM_SET should be used instead.  Not only does it
+		 * eliminate the need for a separate RTC_AIE_ON call, it
+		 * doesn't have the "alarm 23:59:59 in the future" race.
+		 *
+		 * NOTE:  some legacy code may have used invalid fields as
+		 * wildcards, exposing hardware "periodic alarm" capabilities.
+		 * Not supported here.
+		 */
+		{
+			unsigned long now, then;
+
+			err = rtc_read_time(rtc, &tm);
+			if (err < 0)
+				return err;
+			rtc_tm_to_time(&tm, &now);
+
+			alarm.time.tm_mday = tm.tm_mday;
+			alarm.time.tm_mon = tm.tm_mon;
+			alarm.time.tm_year = tm.tm_year;
+			err  = rtc_valid_tm(&alarm.time);
+			if (err < 0)
+				return err;
+			rtc_tm_to_time(&alarm.time, &then);
+
+			/* alarm may need to wrap into tomorrow */
+			if (then < now) {
+				rtc_time_to_tm(now + 24 * 60 * 60, &tm);
+				alarm.time.tm_mday = tm.tm_mday;
+				alarm.time.tm_mon = tm.tm_mon;
+				alarm.time.tm_year = tm.tm_year;
+			}
+		}
+
+		err = rtc_set_alarm(rtc, &alarm);
 		break;
 
 	case RTC_RD_TIME:
-		err = rtc_read_time(class_dev, &tm);
+		err = rtc_read_time(rtc, &tm);
 		if (err < 0)
 			return err;
 
@@ -300,7 +335,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
 		if (copy_from_user(&tm, uarg, sizeof(tm)))
 			return -EFAULT;
 
-		err = rtc_set_time(class_dev, &tm);
+		err = rtc_set_time(rtc, &tm);
 		break;
 
 	case RTC_IRQP_READ:
@@ -310,7 +345,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
 
 	case RTC_IRQP_SET:
 		if (ops->irq_set_freq)
-			err = rtc_irq_set_freq(class_dev, rtc->irq_task, arg);
+			err = rtc_irq_set_freq(rtc, rtc->irq_task, arg);
 		break;
 
 #if 0
@@ -336,11 +371,11 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
 		if (copy_from_user(&alarm, uarg, sizeof(alarm)))
 			return -EFAULT;
 
-		err = rtc_set_alarm(class_dev, &alarm);
+		err = rtc_set_alarm(rtc, &alarm);
 		break;
 
 	case RTC_WKALM_RD:
-		err = rtc_read_alarm(class_dev, &alarm);
+		err = rtc_read_alarm(rtc, &alarm);
 		if (err < 0)
 			return err;
 
@@ -372,7 +407,7 @@ static int rtc_dev_release(struct inode *inode, struct file *file)
 	clear_uie(rtc);
 #endif
 	if (rtc->ops->release)
-		rtc->ops->release(rtc->class_dev.dev);
+		rtc->ops->release(rtc->dev.parent);
 
 	mutex_unlock(&rtc->char_lock);
 	return 0;
@@ -397,17 +432,18 @@ static const struct file_operations rtc_dev_fops = {
 
 /* insertion/removal hooks */
 
-static int rtc_dev_add_device(struct class_device *class_dev,
-				struct class_interface *class_intf)
+void rtc_dev_prepare(struct rtc_device *rtc)
 {
-	int err = 0;
-	struct rtc_device *rtc = to_rtc_device(class_dev);
+	if (!rtc_devt)
+		return;
 
 	if (rtc->id >= RTC_DEV_MAX) {
-		dev_err(class_dev->dev, "too many RTCs\n");
-		return -EINVAL;
+		pr_debug("%s: too many RTC devices\n", rtc->name);
+		return;
 	}
 
+	rtc->dev.devt = MKDEV(MAJOR(rtc_devt), rtc->id);
+
 	mutex_init(&rtc->char_lock);
 	spin_lock_init(&rtc->irq_lock);
 	init_waitqueue_head(&rtc->irq_queue);
@@ -418,100 +454,36 @@ static int rtc_dev_add_device(struct class_device *class_dev,
 
 	cdev_init(&rtc->char_dev, &rtc_dev_fops);
 	rtc->char_dev.owner = rtc->owner;
+}
 
-	if (cdev_add(&rtc->char_dev, MKDEV(MAJOR(rtc_devt), rtc->id), 1)) {
-		dev_err(class_dev->dev,
-			"failed to add char device %d:%d\n",
+void rtc_dev_add_device(struct rtc_device *rtc)
+{
+	if (cdev_add(&rtc->char_dev, rtc->dev.devt, 1))
+		printk(KERN_WARNING "%s: failed to add char device %d:%d\n",
+			rtc->name, MAJOR(rtc_devt), rtc->id);
+	else
+		pr_debug("%s: dev (%d:%d)\n", rtc->name,
 			MAJOR(rtc_devt), rtc->id);
-		return -ENODEV;
-	}
-
-	rtc->rtc_dev = class_device_create(rtc_dev_class, NULL,
-						MKDEV(MAJOR(rtc_devt), rtc->id),
-						class_dev->dev, "rtc%d", rtc->id);
-	if (IS_ERR(rtc->rtc_dev)) {
-		dev_err(class_dev->dev, "cannot create rtc_dev device\n");
-		err = PTR_ERR(rtc->rtc_dev);
-		goto err_cdev_del;
-	}
-
-	dev_dbg(class_dev->dev, "rtc intf: dev (%d:%d)\n",
-		MAJOR(rtc->rtc_dev->devt),
-		MINOR(rtc->rtc_dev->devt));
-
-	return 0;
-
-err_cdev_del:
-
-	cdev_del(&rtc->char_dev);
-	return err;
 }
 
-static void rtc_dev_remove_device(struct class_device *class_dev,
-					struct class_interface *class_intf)
+void rtc_dev_del_device(struct rtc_device *rtc)
 {
-	struct rtc_device *rtc = to_rtc_device(class_dev);
-
-	if (rtc->rtc_dev) {
-		dev_dbg(class_dev->dev, "removing char %d:%d\n",
-			MAJOR(rtc->rtc_dev->devt),
-			MINOR(rtc->rtc_dev->devt));
-
-		class_device_unregister(rtc->rtc_dev);
+	if (rtc->dev.devt)
 		cdev_del(&rtc->char_dev);
-	}
 }
 
-/* interface registration */
-
-static struct class_interface rtc_dev_interface = {
-	.add = &rtc_dev_add_device,
-	.remove = &rtc_dev_remove_device,
-};
-
-static int __init rtc_dev_init(void)
+void __init rtc_dev_init(void)
 {
 	int err;
 
-	rtc_dev_class = class_create(THIS_MODULE, "rtc-dev");
-	if (IS_ERR(rtc_dev_class))
-		return PTR_ERR(rtc_dev_class);
-
 	err = alloc_chrdev_region(&rtc_devt, 0, RTC_DEV_MAX, "rtc");
-	if (err < 0) {
+	if (err < 0)
 		printk(KERN_ERR "%s: failed to allocate char dev region\n",
 			__FILE__);
-		goto err_destroy_class;
-	}
-
-	err = rtc_interface_register(&rtc_dev_interface);
-	if (err < 0) {
-		printk(KERN_ERR "%s: failed to register the interface\n",
-			__FILE__);
-		goto err_unregister_chrdev;
-	}
-
-	return 0;
-
-err_unregister_chrdev:
-	unregister_chrdev_region(rtc_devt, RTC_DEV_MAX);
-
-err_destroy_class:
-	class_destroy(rtc_dev_class);
-
-	return err;
 }
 
-static void __exit rtc_dev_exit(void)
+void __exit rtc_dev_exit(void)
 {
-	class_interface_unregister(&rtc_dev_interface);
-	class_destroy(rtc_dev_class);
-	unregister_chrdev_region(rtc_devt, RTC_DEV_MAX);
+	if (rtc_devt)
+		unregister_chrdev_region(rtc_devt, RTC_DEV_MAX);
 }
-
-subsys_initcall(rtc_dev_init);
-module_exit(rtc_dev_exit);
-
-MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
-MODULE_DESCRIPTION("RTC class dev interface");
-MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c
index e27176c0e18..afa64c7fa2e 100644
--- a/drivers/rtc/rtc-ds1553.c
+++ b/drivers/rtc/rtc-ds1553.c
@@ -203,7 +203,7 @@ static irqreturn_t ds1553_rtc_interrupt(int irq, void *dev_id)
 		events |= RTC_UF;
 	else
 		events |= RTC_AF;
-	rtc_update_irq(&pdata->rtc->class_dev, 1, events);
+	rtc_update_irq(pdata->rtc, 1, events);
 	return IRQ_HANDLED;
 }
 
diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c
index 7bbc26a34bd..ba795a4db1e 100644
--- a/drivers/rtc/rtc-lib.c
+++ b/drivers/rtc/rtc-lib.c
@@ -117,85 +117,4 @@ int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time)
 }
 EXPORT_SYMBOL(rtc_tm_to_time);
 
-
-/* Merge the valid (i.e. non-negative) fields of alarm into the current
- * time.  If the valid alarm fields are earlier than the equivalent
- * fields in the time, carry one into the least significant invalid
- * field, so that the alarm expiry is in the future.  It assumes that the
- * least significant invalid field is more significant than the most
- * significant valid field, and that the seconds field is valid.
- *
- * This is used by alarms that take relative (rather than absolute)
- * times, and/or have a simple binary second counter instead of
- * day/hour/minute/sec registers.
- */
-void rtc_merge_alarm(struct rtc_time *now, struct rtc_time *alarm)
-{
-	int *alarmp = &alarm->tm_sec;
-	int *timep = &now->tm_sec;
-	int carry_into, i;
-
-	/* Ignore everything past the 6th element (tm_year). */
-	for (i = 5; i > 0; i--) {
-		if (alarmp[i] < 0)
-			alarmp[i] = timep[i];
-		else
-			break;
-	}
-
-	/* No carry needed if all fields are valid. */
-	if (i == 5)
-		return;
-
-	for (carry_into = i + 1; i >= 0; i--) {
-		if (alarmp[i] < timep[i])
-			break;
-
-		if (alarmp[i] > timep[i])
-			return;
-	}
-
-	switch (carry_into) {
-		case 1:
-			alarm->tm_min++;
-
-			if (alarm->tm_min < 60)
-				return;
-
-			alarm->tm_min = 0;
-			/* fall-through */
-
-		case 2:
-			alarm->tm_hour++;
-
-			if (alarm->tm_hour < 60)
-				return;
-
-			alarm->tm_hour = 0;
-			/* fall-through */
-
-		case 3:
-			alarm->tm_mday++;
-
-			if (alarm->tm_mday <= rtc_days_in_month[alarm->tm_mon])
-				return;
-
-			alarm->tm_mday = 1;
-			/* fall-through */
-
-		case 4:
-			alarm->tm_mon++;
-
-			if (alarm->tm_mon <= 12)
-				return;
-
-			alarm->tm_mon = 1;
-			/* fall-through */
-
-		case 5:
-			alarm->tm_year++;
-	}
-}
-EXPORT_SYMBOL(rtc_merge_alarm);
-
 MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-max6900.c b/drivers/rtc/rtc-max6900.c
new file mode 100644
index 00000000000..eee4ee5bb75
--- /dev/null
+++ b/drivers/rtc/rtc-max6900.c
@@ -0,0 +1,311 @@
+/*
+ * rtc class driver for the Maxim MAX6900 chip
+ *
+ * Author: Dale Farnsworth <dale@farnsworth.org>
+ *
+ * based on previously existing rtc class drivers
+ *
+ * 2007 (c) MontaVista, Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/bcd.h>
+#include <linux/rtc.h>
+#include <linux/delay.h>
+
+#define DRV_NAME "max6900"
+#define DRV_VERSION "0.1"
+
+/*
+ * register indices
+ */
+#define MAX6900_REG_SC			0	/* seconds	00-59 */
+#define MAX6900_REG_MN			1	/* minutes	00-59 */
+#define MAX6900_REG_HR			2	/* hours	00-23 */
+#define MAX6900_REG_DT			3	/* day of month	00-31 */
+#define MAX6900_REG_MO			4	/* month	01-12 */
+#define MAX6900_REG_DW			5	/* day of week	 1-7  */
+#define MAX6900_REG_YR			6	/* year		00-99 */
+#define MAX6900_REG_CT			7	/* control */
+#define MAX6900_REG_LEN			8
+
+#define MAX6900_REG_CT_WP		(1 << 7)	/* Write Protect */
+
+/*
+ * register read/write commands
+ */
+#define MAX6900_REG_CONTROL_WRITE	0x8e
+#define MAX6900_REG_BURST_READ		0xbf
+#define MAX6900_REG_BURST_WRITE		0xbe
+#define MAX6900_REG_RESERVED_READ	0x96
+
+#define MAX6900_IDLE_TIME_AFTER_WRITE	3	/* specification says 2.5 mS */
+
+#define MAX6900_I2C_ADDR		0xa0
+
+static unsigned short normal_i2c[] = {
+	MAX6900_I2C_ADDR >> 1,
+	I2C_CLIENT_END
+};
+
+I2C_CLIENT_INSMOD;			/* defines addr_data */
+
+static int max6900_probe(struct i2c_adapter *adapter, int addr, int kind);
+
+static int max6900_i2c_read_regs(struct i2c_client *client, u8 *buf)
+{
+	u8 reg_addr[1] = { MAX6900_REG_BURST_READ };
+	struct i2c_msg msgs[2] = {
+		{
+			.addr	= client->addr,
+			.flags	= 0, /* write */
+			.len	= sizeof(reg_addr),
+			.buf	= reg_addr
+		},
+		{
+			.addr	= client->addr,
+			.flags	= I2C_M_RD,
+			.len	= MAX6900_REG_LEN,
+			.buf	= buf
+		}
+	};
+	int rc;
+
+	rc = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (rc != ARRAY_SIZE(msgs)) {
+		dev_err(&client->dev, "%s: register read failed\n",
+			__FUNCTION__);
+		return -EIO;
+	}
+	return 0;
+}
+
+static int max6900_i2c_write_regs(struct i2c_client *client, u8 const *buf)
+{
+	u8 i2c_buf[MAX6900_REG_LEN + 1] = { MAX6900_REG_BURST_WRITE };
+	struct i2c_msg msgs[1] = {
+		{
+			.addr	= client->addr,
+			.flags	= 0, /* write */
+			.len	= MAX6900_REG_LEN + 1,
+			.buf	= i2c_buf
+		}
+	};
+	int rc;
+
+	memcpy(&i2c_buf[1], buf, MAX6900_REG_LEN);
+
+	rc = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (rc != ARRAY_SIZE(msgs)) {
+		dev_err(&client->dev, "%s: register write failed\n",
+			__FUNCTION__);
+		return -EIO;
+	}
+	msleep(MAX6900_IDLE_TIME_AFTER_WRITE);
+	return 0;
+}
+
+static int max6900_i2c_validate_client(struct i2c_client *client)
+{
+	u8 regs[MAX6900_REG_LEN];
+	u8 zero_mask[MAX6900_REG_LEN] = {
+		0x80,	/* seconds */
+		0x80,	/* minutes */
+		0x40,	/* hours */
+		0xc0,	/* day of month */
+		0xe0,	/* month */
+		0xf8,	/* day of week */
+		0x00,	/* year */
+		0x7f,	/* control */
+	};
+	int i;
+	int rc;
+	int reserved;
+
+	reserved = i2c_smbus_read_byte_data(client, MAX6900_REG_RESERVED_READ);
+	if (reserved != 0x07)
+		return -ENODEV;
+
+	rc = max6900_i2c_read_regs(client, regs);
+	if (rc < 0)
+		return rc;
+
+	for (i = 0; i < MAX6900_REG_LEN; ++i) {
+		if (regs[i] & zero_mask[i])
+			return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int max6900_i2c_read_time(struct i2c_client *client, struct rtc_time *tm)
+{
+	int rc;
+	u8 regs[MAX6900_REG_LEN];
+
+	rc = max6900_i2c_read_regs(client, regs);
+	if (rc < 0)
+		return rc;
+
+	tm->tm_sec = BCD2BIN(regs[MAX6900_REG_SC]);
+	tm->tm_min = BCD2BIN(regs[MAX6900_REG_MN]);
+	tm->tm_hour = BCD2BIN(regs[MAX6900_REG_HR] & 0x3f);
+	tm->tm_mday = BCD2BIN(regs[MAX6900_REG_DT]);
+	tm->tm_mon = BCD2BIN(regs[MAX6900_REG_MO]) - 1;
+	tm->tm_year = BCD2BIN(regs[MAX6900_REG_YR]) + 100;
+	tm->tm_wday = BCD2BIN(regs[MAX6900_REG_DW]);
+
+	return 0;
+}
+
+static int max6900_i2c_clear_write_protect(struct i2c_client *client)
+{
+	int rc;
+	rc = i2c_smbus_write_byte_data (client, MAX6900_REG_CONTROL_WRITE, 0);
+	if (rc < 0) {
+		dev_err(&client->dev, "%s: control register write failed\n",
+			__FUNCTION__);
+		return -EIO;
+	}
+	return 0;
+}
+
+static int max6900_i2c_set_time(struct i2c_client *client,
+				struct rtc_time const *tm)
+{
+	u8 regs[MAX6900_REG_LEN];
+	int rc;
+
+	rc = max6900_i2c_clear_write_protect(client);
+	if (rc < 0)
+		return rc;
+
+	regs[MAX6900_REG_SC] = BIN2BCD(tm->tm_sec);
+	regs[MAX6900_REG_MN] = BIN2BCD(tm->tm_min);
+	regs[MAX6900_REG_HR] = BIN2BCD(tm->tm_hour);
+	regs[MAX6900_REG_DT] = BIN2BCD(tm->tm_mday);
+	regs[MAX6900_REG_MO] = BIN2BCD(tm->tm_mon + 1);
+	regs[MAX6900_REG_YR] = BIN2BCD(tm->tm_year - 100);
+	regs[MAX6900_REG_DW] = BIN2BCD(tm->tm_wday);
+	regs[MAX6900_REG_CT] = MAX6900_REG_CT_WP;	/* set write protect */
+
+	rc = max6900_i2c_write_regs(client, regs);
+	if (rc < 0)
+		return rc;
+
+	return 0;
+}
+
+static int max6900_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	return max6900_i2c_read_time(to_i2c_client(dev), tm);
+}
+
+static int max6900_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	return max6900_i2c_set_time(to_i2c_client(dev), tm);
+}
+
+static int max6900_attach_adapter(struct i2c_adapter *adapter)
+{
+	return i2c_probe(adapter, &addr_data, max6900_probe);
+}
+
+static int max6900_detach_client(struct i2c_client *client)
+{
+	struct rtc_device *const rtc = i2c_get_clientdata(client);
+
+	if (rtc)
+		rtc_device_unregister(rtc);
+
+	return i2c_detach_client(client);
+}
+
+static struct i2c_driver max6900_driver = {
+	.driver		= {
+		.name	= DRV_NAME,
+	},
+	.id		= I2C_DRIVERID_MAX6900,
+	.attach_adapter = max6900_attach_adapter,
+	.detach_client	= max6900_detach_client,
+};
+
+static const struct rtc_class_ops max6900_rtc_ops = {
+	.read_time	= max6900_rtc_read_time,
+	.set_time	= max6900_rtc_set_time,
+};
+
+static int max6900_probe(struct i2c_adapter *adapter, int addr, int kind)
+{
+	int rc = 0;
+	struct i2c_client *client = NULL;
+	struct rtc_device *rtc = NULL;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
+		rc = -ENODEV;
+		goto failout;
+	}
+
+	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	if (client == NULL) {
+		rc = -ENOMEM;
+		goto failout;
+	}
+
+	client->addr = addr;
+	client->adapter = adapter;
+	client->driver = &max6900_driver;
+	strlcpy(client->name, DRV_NAME, I2C_NAME_SIZE);
+
+	if (kind < 0) {
+		rc = max6900_i2c_validate_client(client);
+		if (rc < 0)
+			goto failout;
+	}
+
+	rc = i2c_attach_client(client);
+	if (rc < 0)
+		goto failout;
+
+	dev_info(&client->dev,
+		 "chip found, driver version " DRV_VERSION "\n");
+
+	rtc = rtc_device_register(max6900_driver.driver.name,
+				  &client->dev,
+				  &max6900_rtc_ops, THIS_MODULE);
+	if (IS_ERR(rtc)) {
+		rc = PTR_ERR(rtc);
+		goto failout_detach;
+	}
+
+	i2c_set_clientdata(client, rtc);
+
+	return 0;
+
+failout_detach:
+	i2c_detach_client(client);
+failout:
+	kfree(client);
+	return rc;
+}
+
+static int __init max6900_init(void)
+{
+	return i2c_add_driver(&max6900_driver);
+}
+
+static void __exit max6900_exit(void)
+{
+	i2c_del_driver(&max6900_driver);
+}
+
+MODULE_DESCRIPTION("Maxim MAX6900 RTC driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(max6900_init);
+module_exit(max6900_exit);
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 9de8d67f4f8..60a8a4bb8bd 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -124,7 +124,7 @@ static void rtc_wait_not_busy(void)
 	/* now we have ~15 usec to read/write various registers */
 }
 
-static irqreturn_t rtc_irq(int irq, void *class_dev)
+static irqreturn_t rtc_irq(int irq, void *rtc)
 {
 	unsigned long		events = 0;
 	u8			irq_data;
@@ -141,7 +141,7 @@ static irqreturn_t rtc_irq(int irq, void *class_dev)
 	if (irq_data & OMAP_RTC_STATUS_1S_EVENT)
 		events |= RTC_IRQF | RTC_UF;
 
-	rtc_update_irq(class_dev, 1, events);
+	rtc_update_irq(rtc, 1, events);
 
 	return IRQ_HANDLED;
 }
@@ -289,34 +289,6 @@ static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
 {
 	u8 reg;
 
-	/* Much userspace code uses RTC_ALM_SET, thus "don't care" for
-	 * day/month/year specifies alarms up to 24 hours in the future.
-	 * So we need to handle that ... but let's ignore the "don't care"
-	 * values for hours/minutes/seconds.
-	 */
-	if (alm->time.tm_mday <= 0
-			&& alm->time.tm_mon < 0
-			&& alm->time.tm_year < 0) {
-		struct rtc_time tm;
-		unsigned long now, then;
-
-		omap_rtc_read_time(dev, &tm);
-		rtc_tm_to_time(&tm, &now);
-
-		alm->time.tm_mday = tm.tm_mday;
-		alm->time.tm_mon = tm.tm_mon;
-		alm->time.tm_year = tm.tm_year;
-		rtc_tm_to_time(&alm->time, &then);
-
-		/* sometimes the alarm wraps into tomorrow */
-		if (then < now) {
-			rtc_time_to_tm(now + 24 * 60 * 60, &tm);
-			alm->time.tm_mday = tm.tm_mday;
-			alm->time.tm_mon = tm.tm_mon;
-			alm->time.tm_year = tm.tm_year;
-		}
-	}
-
 	if (tm2bcd(&alm->time) < 0)
 		return -EINVAL;
 
@@ -399,7 +371,7 @@ static int __devinit omap_rtc_probe(struct platform_device *pdev)
 		goto fail;
 	}
 	platform_set_drvdata(pdev, rtc);
-	class_set_devdata(&rtc->class_dev, mem);
+	dev_set_devdata(&rtc->dev, mem);
 
 	/* clear pending irqs, and set 1/second periodic,
 	 * which we'll use instead of update irqs
@@ -418,13 +390,13 @@ static int __devinit omap_rtc_probe(struct platform_device *pdev)
 
 	/* handle periodic and alarm irqs */
 	if (request_irq(omap_rtc_timer, rtc_irq, IRQF_DISABLED,
-			rtc->class_dev.class_id, &rtc->class_dev)) {
+			rtc->dev.bus_id, rtc)) {
 		pr_debug("%s: RTC timer interrupt IRQ%d already claimed\n",
 			pdev->name, omap_rtc_timer);
 		goto fail0;
 	}
 	if (request_irq(omap_rtc_alarm, rtc_irq, IRQF_DISABLED,
-			rtc->class_dev.class_id, &rtc->class_dev)) {
+			rtc->dev.bus_id, rtc)) {
 		pr_debug("%s: RTC alarm interrupt IRQ%d already claimed\n",
 			pdev->name, omap_rtc_alarm);
 		goto fail1;
@@ -481,26 +453,17 @@ static int __devexit omap_rtc_remove(struct platform_device *pdev)
 	free_irq(omap_rtc_timer, rtc);
 	free_irq(omap_rtc_alarm, rtc);
 
-	release_resource(class_get_devdata(&rtc->class_dev));
+	release_resource(dev_get_devdata(&rtc->dev));
 	rtc_device_unregister(rtc);
 	return 0;
 }
 
 #ifdef CONFIG_PM
 
-static struct timespec rtc_delta;
 static u8 irqstat;
 
 static int omap_rtc_suspend(struct platform_device *pdev, pm_message_t state)
 {
-	struct rtc_time rtc_tm;
-	struct timespec time;
-
-	time.tv_nsec = 0;
-	omap_rtc_read_time(NULL, &rtc_tm);
-	rtc_tm_to_time(&rtc_tm, &time.tv_sec);
-
-	save_time_delta(&rtc_delta, &time);
 	irqstat = rtc_read(OMAP_RTC_INTERRUPTS_REG);
 
 	/* FIXME the RTC alarm is not currently acting as a wakeup event
@@ -517,14 +480,6 @@ static int omap_rtc_suspend(struct platform_device *pdev, pm_message_t state)
 
 static int omap_rtc_resume(struct platform_device *pdev)
 {
-	struct rtc_time rtc_tm;
-	struct timespec time;
-
-	time.tv_nsec = 0;
-	omap_rtc_read_time(NULL, &rtc_tm);
-	rtc_tm_to_time(&rtc_tm, &time.tv_sec);
-
-	restore_time_delta(&rtc_delta, &time);
 	if (device_may_wakeup(&pdev->dev))
 		disable_irq_wake(omap_rtc_alarm);
 	else
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index f13daa9feca..e4bf68ca96f 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -51,7 +51,7 @@ static irqreturn_t pl031_interrupt(int irq, void *dev_id)
 {
 	struct rtc_device *rtc = dev_id;
 
-	rtc_update_irq(&rtc->class_dev, 1, RTC_AF);
+	rtc_update_irq(rtc, 1, RTC_AF);
 
 	return IRQ_HANDLED;
 }
diff --git a/drivers/rtc/rtc-proc.c b/drivers/rtc/rtc-proc.c
index 1bd624fc685..8d300e6d0d9 100644
--- a/drivers/rtc/rtc-proc.c
+++ b/drivers/rtc/rtc-proc.c
@@ -16,18 +16,18 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 
-static struct class_device *rtc_dev = NULL;
-static DEFINE_MUTEX(rtc_lock);
+#include "rtc-core.h"
+
 
 static int rtc_proc_show(struct seq_file *seq, void *offset)
 {
 	int err;
-	struct class_device *class_dev = seq->private;
-	const struct rtc_class_ops *ops = to_rtc_device(class_dev)->ops;
+	struct rtc_device *rtc = seq->private;
+	const struct rtc_class_ops *ops = rtc->ops;
 	struct rtc_wkalrm alrm;
 	struct rtc_time tm;
 
-	err = rtc_read_time(class_dev, &tm);
+	err = rtc_read_time(rtc, &tm);
 	if (err == 0) {
 		seq_printf(seq,
 			"rtc_time\t: %02d:%02d:%02d\n"
@@ -36,7 +36,7 @@ static int rtc_proc_show(struct seq_file *seq, void *offset)
 			tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
 	}
 
-	err = rtc_read_alarm(class_dev, &alrm);
+	err = rtc_read_alarm(rtc, &alrm);
 	if (err == 0) {
 		seq_printf(seq, "alrm_time\t: ");
 		if ((unsigned int)alrm.time.tm_hour <= 24)
@@ -74,19 +74,19 @@ static int rtc_proc_show(struct seq_file *seq, void *offset)
 	seq_printf(seq, "24hr\t\t: yes\n");
 
 	if (ops->proc)
-		ops->proc(class_dev->dev, seq);
+		ops->proc(rtc->dev.parent, seq);
 
 	return 0;
 }
 
 static int rtc_proc_open(struct inode *inode, struct file *file)
 {
-	struct class_device *class_dev = PDE(inode)->data;
+	struct rtc_device *rtc = PDE(inode)->data;
 
 	if (!try_module_get(THIS_MODULE))
 		return -ENODEV;
 
-	return single_open(file, rtc_proc_show, class_dev);
+	return single_open(file, rtc_proc_show, rtc);
 }
 
 static int rtc_proc_release(struct inode *inode, struct file *file)
@@ -103,62 +103,22 @@ static const struct file_operations rtc_proc_fops = {
 	.release	= rtc_proc_release,
 };
 
-static int rtc_proc_add_device(struct class_device *class_dev,
-					struct class_interface *class_intf)
+void rtc_proc_add_device(struct rtc_device *rtc)
 {
-	mutex_lock(&rtc_lock);
-	if (rtc_dev == NULL) {
+	if (rtc->id == 0) {
 		struct proc_dir_entry *ent;
 
-		rtc_dev = class_dev;
-
 		ent = create_proc_entry("driver/rtc", 0, NULL);
 		if (ent) {
-			struct rtc_device *rtc = to_rtc_device(class_dev);
-
 			ent->proc_fops = &rtc_proc_fops;
 			ent->owner = rtc->owner;
-			ent->data = class_dev;
-
-			dev_dbg(class_dev->dev, "rtc intf: proc\n");
+			ent->data = rtc;
 		}
-		else
-			rtc_dev = NULL;
 	}
-	mutex_unlock(&rtc_lock);
-
-	return 0;
 }
 
-static void rtc_proc_remove_device(struct class_device *class_dev,
-					struct class_interface *class_intf)
+void rtc_proc_del_device(struct rtc_device *rtc)
 {
-	mutex_lock(&rtc_lock);
-	if (rtc_dev == class_dev) {
+	if (rtc->id == 0)
 		remove_proc_entry("driver/rtc", NULL);
-		rtc_dev = NULL;
-	}
-	mutex_unlock(&rtc_lock);
-}
-
-static struct class_interface rtc_proc_interface = {
-	.add = &rtc_proc_add_device,
-	.remove = &rtc_proc_remove_device,
-};
-
-static int __init rtc_proc_init(void)
-{
-	return rtc_interface_register(&rtc_proc_interface);
 }
-
-static void __exit rtc_proc_exit(void)
-{
-	class_interface_unregister(&rtc_proc_interface);
-}
-
-subsys_initcall(rtc_proc_init);
-module_exit(rtc_proc_exit);
-
-MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
-MODULE_DESCRIPTION("RTC class proc interface");
-MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-rs5c313.c b/drivers/rtc/rtc-rs5c313.c
new file mode 100644
index 00000000000..66eb133bf5f
--- /dev/null
+++ b/drivers/rtc/rtc-rs5c313.c
@@ -0,0 +1,423 @@
+/*
+ * Ricoh RS5C313 RTC device/driver
+ *  Copyright (C) 2007 Nobuhiro Iwamatsu
+ *
+ *  2005-09-19 modifed by kogiidena
+ *
+ * Based on the old drivers/char/rs5c313_rtc.c  by:
+ *  Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
+ *  Copyright (C) 1999 Tetsuya Okada & Niibe Yutaka
+ *
+ * Based on code written by Paul Gortmaker.
+ *  Copyright (C) 1996 Paul Gortmaker
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Based on other minimal char device drivers, like Alan's
+ * watchdog, Ted's random, etc. etc.
+ *
+ *	1.07	Paul Gortmaker.
+ *	1.08	Miquel van Smoorenburg: disallow certain things on the
+ *		DEC Alpha as the CMOS clock is also used for other things.
+ *	1.09	Nikita Schmidt: epoch support and some Alpha cleanup.
+ *	1.09a	Pete Zaitcev: Sun SPARC
+ *	1.09b	Jeff Garzik: Modularize, init cleanup
+ *	1.09c	Jeff Garzik: SMP cleanup
+ *	1.10    Paul Barton-Davis: add support for async I/O
+ *	1.10a	Andrea Arcangeli: Alpha updates
+ *	1.10b	Andrew Morton: SMP lock fix
+ *	1.10c	Cesar Barros: SMP locking fixes and cleanup
+ *	1.10d	Paul Gortmaker: delete paranoia check in rtc_exit
+ *	1.10e	Maciej W. Rozycki: Handle DECstation's year weirdness.
+ *      1.11    Takashi Iwai: Kernel access functions
+ *			      rtc_register/rtc_unregister/rtc_control
+ *      1.11a   Daniele Bellucci: Audit create_proc_read_entry in rtc_init
+ *	1.12	Venkatesh Pallipadi: Hooks for emulating rtc on HPET base-timer
+ *		CONFIG_HPET_EMULATE_RTC
+ *	1.13	Nobuhiro Iwamatsu: Updata driver.
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/rtc.h>
+#include <linux/platform_device.h>
+#include <linux/bcd.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+
+#define DRV_NAME	"rs5c313"
+#define DRV_VERSION 	"1.13"
+
+#ifdef CONFIG_SH_LANDISK
+/*****************************************************/
+/* LANDISK dependence part of RS5C313                */
+/*****************************************************/
+
+#define SCSMR1		0xFFE00000
+#define SCSCR1		0xFFE00008
+#define SCSMR1_CA	0x80
+#define SCSCR1_CKE	0x03
+#define SCSPTR1		0xFFE0001C
+#define SCSPTR1_EIO	0x80
+#define SCSPTR1_SPB1IO	0x08
+#define SCSPTR1_SPB1DT	0x04
+#define SCSPTR1_SPB0IO	0x02
+#define SCSPTR1_SPB0DT	0x01
+
+#define SDA_OEN		SCSPTR1_SPB1IO
+#define SDA		SCSPTR1_SPB1DT
+#define SCL_OEN		SCSPTR1_SPB0IO
+#define SCL		SCSPTR1_SPB0DT
+
+/* RICOH RS5C313 CE port */
+#define RS5C313_CE	0xB0000003
+
+/* RICOH RS5C313 CE port bit */
+#define RS5C313_CE_RTCCE	0x02
+
+/* SCSPTR1 data */
+unsigned char scsptr1_data;
+
+#define RS5C313_CEENABLE    ctrl_outb(RS5C313_CE_RTCCE, RS5C313_CE);
+#define RS5C313_CEDISABLE   ctrl_outb(0x00, RS5C313_CE)
+#define RS5C313_MISCOP      ctrl_outb(0x02, 0xB0000008)
+
+static void rs5c313_init_port(void)
+{
+	/* Set SCK as I/O port and Initialize SCSPTR1 data & I/O port. */
+	ctrl_outb(ctrl_inb(SCSMR1) & ~SCSMR1_CA, SCSMR1);
+	ctrl_outb(ctrl_inb(SCSCR1) & ~SCSCR1_CKE, SCSCR1);
+
+	/* And Initialize SCL for RS5C313 clock */
+	scsptr1_data = ctrl_inb(SCSPTR1) | SCL;	/* SCL:H */
+	ctrl_outb(scsptr1_data, SCSPTR1);
+	scsptr1_data = ctrl_inb(SCSPTR1) | SCL_OEN;	/* SCL output enable */
+	ctrl_outb(scsptr1_data, SCSPTR1);
+	RS5C313_CEDISABLE;	/* CE:L */
+}
+
+static void rs5c313_write_data(unsigned char data)
+{
+	int i;
+
+	for (i = 0; i < 8; i++) {
+		/* SDA:Write Data */
+		scsptr1_data = (scsptr1_data & ~SDA) |
+				((((0x80 >> i) & data) >> (7 - i)) << 2);
+		ctrl_outb(scsptr1_data, SCSPTR1);
+		if (i == 0) {
+			scsptr1_data |= SDA_OEN;	/* SDA:output enable */
+			ctrl_outb(scsptr1_data, SCSPTR1);
+		}
+		ndelay(700);
+		scsptr1_data &= ~SCL;	/* SCL:L */
+		ctrl_outb(scsptr1_data, SCSPTR1);
+		ndelay(700);
+		scsptr1_data |= SCL;	/* SCL:H */
+		ctrl_outb(scsptr1_data, SCSPTR1);
+	}
+
+	scsptr1_data &= ~SDA_OEN;	/* SDA:output disable */
+	ctrl_outb(scsptr1_data, SCSPTR1);
+}
+
+static unsigned char rs5c313_read_data(void)
+{
+	int i;
+	unsigned char data = 0;
+
+	for (i = 0; i < 8; i++) {
+		ndelay(700);
+		/* SDA:Read Data */
+		data |= ((ctrl_inb(SCSPTR1) & SDA) >> 2) << (7 - i);
+		scsptr1_data &= ~SCL;	/* SCL:L */
+		ctrl_outb(scsptr1_data, SCSPTR1);
+		ndelay(700);
+		scsptr1_data |= SCL;	/* SCL:H */
+		ctrl_outb(scsptr1_data, SCSPTR1);
+	}
+	return data & 0x0F;
+}
+
+#endif /* CONFIG_SH_LANDISK */
+
+/*****************************************************/
+/* machine independence part of RS5C313              */
+/*****************************************************/
+
+/* RICOH RS5C313 address */
+#define RS5C313_ADDR_SEC	0x00
+#define RS5C313_ADDR_SEC10	0x01
+#define RS5C313_ADDR_MIN	0x02
+#define RS5C313_ADDR_MIN10	0x03
+#define RS5C313_ADDR_HOUR	0x04
+#define RS5C313_ADDR_HOUR10	0x05
+#define RS5C313_ADDR_WEEK	0x06
+#define RS5C313_ADDR_INTINTVREG	0x07
+#define RS5C313_ADDR_DAY	0x08
+#define RS5C313_ADDR_DAY10	0x09
+#define RS5C313_ADDR_MON	0x0A
+#define RS5C313_ADDR_MON10	0x0B
+#define RS5C313_ADDR_YEAR	0x0C
+#define RS5C313_ADDR_YEAR10	0x0D
+#define RS5C313_ADDR_CNTREG	0x0E
+#define RS5C313_ADDR_TESTREG	0x0F
+
+/* RICOH RS5C313 control register */
+#define RS5C313_CNTREG_ADJ_BSY	0x01
+#define RS5C313_CNTREG_WTEN_XSTP	0x02
+#define RS5C313_CNTREG_12_24	0x04
+#define RS5C313_CNTREG_CTFG	0x08
+
+/* RICOH RS5C313 test register */
+#define RS5C313_TESTREG_TEST	0x01
+
+/* RICOH RS5C313 control bit */
+#define RS5C313_CNTBIT_READ	0x40
+#define RS5C313_CNTBIT_AD	0x20
+#define RS5C313_CNTBIT_DT	0x10
+
+static unsigned char rs5c313_read_reg(unsigned char addr)
+{
+
+	rs5c313_write_data(addr | RS5C313_CNTBIT_READ | RS5C313_CNTBIT_AD);
+	return rs5c313_read_data();
+}
+
+static void rs5c313_write_reg(unsigned char addr, unsigned char data)
+{
+	data &= 0x0f;
+	rs5c313_write_data(addr | RS5C313_CNTBIT_AD);
+	rs5c313_write_data(data | RS5C313_CNTBIT_DT);
+	return;
+}
+
+static inline unsigned char rs5c313_read_cntreg(void)
+{
+	return rs5c313_read_reg(RS5C313_ADDR_CNTREG);
+}
+
+static inline void rs5c313_write_cntreg(unsigned char data)
+{
+	rs5c313_write_reg(RS5C313_ADDR_CNTREG, data);
+}
+
+static inline void rs5c313_write_intintvreg(unsigned char data)
+{
+	rs5c313_write_reg(RS5C313_ADDR_INTINTVREG, data);
+}
+
+static int rs5c313_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	int data;
+	int cnt;
+
+	cnt = 0;
+	while (1) {
+		RS5C313_CEENABLE;	/* CE:H */
+
+		/* Initialize control reg. 24 hour */
+		rs5c313_write_cntreg(0x04);
+
+		if (!(rs5c313_read_cntreg() & RS5C313_CNTREG_ADJ_BSY))
+			break;
+
+		RS5C313_CEDISABLE;
+		ndelay(700);	/* CE:L */
+
+		if (cnt++ > 100) {
+			dev_err(dev, "%s: timeout error\n", __FUNCTION__);
+			return -EIO;
+		}
+	}
+
+	data = rs5c313_read_reg(RS5C313_ADDR_SEC);
+	data |= (rs5c313_read_reg(RS5C313_ADDR_SEC10) << 4);
+	tm->tm_sec = BCD2BIN(data);
+
+	data = rs5c313_read_reg(RS5C313_ADDR_MIN);
+	data |= (rs5c313_read_reg(RS5C313_ADDR_MIN10) << 4);
+	tm->tm_min = BCD2BIN(data);
+
+	data = rs5c313_read_reg(RS5C313_ADDR_HOUR);
+	data |= (rs5c313_read_reg(RS5C313_ADDR_HOUR10) << 4);
+	tm->tm_hour = BCD2BIN(data);
+
+	data = rs5c313_read_reg(RS5C313_ADDR_DAY);
+	data |= (rs5c313_read_reg(RS5C313_ADDR_DAY10) << 4);
+	tm->tm_mday = BCD2BIN(data);
+
+	data = rs5c313_read_reg(RS5C313_ADDR_MON);
+	data |= (rs5c313_read_reg(RS5C313_ADDR_MON10) << 4);
+	tm->tm_mon = BCD2BIN(data) - 1;
+
+	data = rs5c313_read_reg(RS5C313_ADDR_YEAR);
+	data |= (rs5c313_read_reg(RS5C313_ADDR_YEAR10) << 4);
+	tm->tm_year = BCD2BIN(data);
+
+	if (tm->tm_year < 70)
+		tm->tm_year += 100;
+
+	data = rs5c313_read_reg(RS5C313_ADDR_WEEK);
+	tm->tm_wday = BCD2BIN(data);
+
+	RS5C313_CEDISABLE;
+	ndelay(700);		/* CE:L */
+
+	return 0;
+}
+
+static int rs5c313_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	int data;
+	int cnt;
+
+	cnt = 0;
+	/* busy check. */
+	while (1) {
+		RS5C313_CEENABLE;	/* CE:H */
+
+		/* Initiatlize control reg. 24 hour */
+		rs5c313_write_cntreg(0x04);
+
+		if (!(rs5c313_read_cntreg() & RS5C313_CNTREG_ADJ_BSY))
+			break;
+		RS5C313_MISCOP;
+		RS5C313_CEDISABLE;
+		ndelay(700);	/* CE:L */
+
+		if (cnt++ > 100) {
+			dev_err(dev, "%s: timeout error\n", __FUNCTION__);
+			return -EIO;
+		}
+	}
+
+	data = BIN2BCD(tm->tm_sec);
+	rs5c313_write_reg(RS5C313_ADDR_SEC, data);
+	rs5c313_write_reg(RS5C313_ADDR_SEC10, (data >> 4));
+
+	data = BIN2BCD(tm->tm_min);
+	rs5c313_write_reg(RS5C313_ADDR_MIN, data );
+	rs5c313_write_reg(RS5C313_ADDR_MIN10, (data >> 4));
+
+	data = BIN2BCD(tm->tm_hour);
+	rs5c313_write_reg(RS5C313_ADDR_HOUR, data);
+	rs5c313_write_reg(RS5C313_ADDR_HOUR10, (data >> 4));
+
+	data = BIN2BCD(tm->tm_mday);
+	rs5c313_write_reg(RS5C313_ADDR_DAY, data);
+	rs5c313_write_reg(RS5C313_ADDR_DAY10, (data>> 4));
+
+	data = BIN2BCD(tm->tm_mon + 1);
+	rs5c313_write_reg(RS5C313_ADDR_MON, data);
+	rs5c313_write_reg(RS5C313_ADDR_MON10, (data >> 4));
+
+	data = BIN2BCD(tm->tm_year % 100);
+	rs5c313_write_reg(RS5C313_ADDR_YEAR, data);
+	rs5c313_write_reg(RS5C313_ADDR_YEAR10, (data >> 4));
+
+	data = BIN2BCD(tm->tm_wday);
+	rs5c313_write_reg(RS5C313_ADDR_WEEK, data);
+
+	RS5C313_CEDISABLE;	/* CE:H */
+	ndelay(700);
+
+	return 0;
+}
+
+static void rs5c313_check_xstp_bit(void)
+{
+	struct rtc_time tm;
+	int cnt;
+
+	RS5C313_CEENABLE;	/* CE:H */
+	if (rs5c313_read_cntreg() & RS5C313_CNTREG_WTEN_XSTP) {
+		/* INT interval reg. OFF */
+		rs5c313_write_intintvreg(0x00);
+		/* Initialize control reg. 24 hour & adjust */
+		rs5c313_write_cntreg(0x07);
+
+		/* busy check. */
+		for (cnt = 0; cnt < 100; cnt++) {
+			if (!(rs5c313_read_cntreg() & RS5C313_CNTREG_ADJ_BSY))
+				break;
+			RS5C313_MISCOP;
+		}
+
+		memset(&tm, 0, sizeof(struct rtc_time));
+		tm.tm_mday 	= 1;
+		tm.tm_mon 	= 1 - 1;
+		tm.tm_year 	= 2000 - 1900;
+
+		rs5c313_rtc_set_time(NULL, &tm);
+		printk(KERN_ERR "RICHO RS5C313: invalid value, resetting to "
+				"1 Jan 2000\n");
+	}
+	RS5C313_CEDISABLE;
+	ndelay(700);		/* CE:L */
+}
+
+static const struct rtc_class_ops rs5c313_rtc_ops = {
+	.read_time = rs5c313_rtc_read_time,
+	.set_time = rs5c313_rtc_set_time,
+};
+
+static int rs5c313_rtc_probe(struct platform_device *pdev)
+{
+	struct rtc_device *rtc = rtc_device_register("rs5c313", &pdev->dev,
+				&rs5c313_rtc_ops, THIS_MODULE);
+
+	if (IS_ERR(rtc))
+		return PTR_ERR(rtc);
+
+	platform_set_drvdata(pdev, rtc);
+
+	return 0;
+}
+
+static int __devexit rs5c313_rtc_remove(struct platform_device *pdev)
+{
+	struct rtc_device *rtc = platform_get_drvdata( pdev );
+
+	rtc_device_unregister(rtc);
+
+	return 0;
+}
+
+static struct platform_driver rs5c313_rtc_platform_driver = {
+	.driver         = {
+		.name   = DRV_NAME,
+		.owner  = THIS_MODULE,
+	},
+	.probe 	= rs5c313_rtc_probe,
+	.remove = __devexit_p( rs5c313_rtc_remove ),
+};
+
+static int __init rs5c313_rtc_init(void)
+{
+	int err;
+
+	err = platform_driver_register(&rs5c313_rtc_platform_driver);
+	if (err)
+		return err;
+
+	rs5c313_init_port();
+	rs5c313_check_xstp_bit();
+
+	return 0;
+}
+
+static void __exit rs5c313_rtc_exit(void)
+{
+	platform_driver_unregister( &rs5c313_rtc_platform_driver );
+}
+
+module_init(rs5c313_rtc_init);
+module_exit(rs5c313_rtc_exit);
+
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR("kogiidena , Nobuhiro Iwamatsu <iwamatsu@nigauri.org>");
+MODULE_DESCRIPTION("Ricoh RS5C313 RTC device driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 9a79a24a748..54b61305346 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -50,7 +50,7 @@ static irqreturn_t s3c_rtc_alarmirq(int irq, void *id)
 {
 	struct rtc_device *rdev = id;
 
-	rtc_update_irq(&rdev->class_dev, 1, RTC_AF | RTC_IRQF);
+	rtc_update_irq(rdev, 1, RTC_AF | RTC_IRQF);
 	return IRQ_HANDLED;
 }
 
@@ -58,7 +58,7 @@ static irqreturn_t s3c_rtc_tickirq(int irq, void *id)
 {
 	struct rtc_device *rdev = id;
 
-	rtc_update_irq(&rdev->class_dev, tick_count++, RTC_PF | RTC_IRQF);
+	rtc_update_irq(rdev, tick_count++, RTC_PF | RTC_IRQF);
 	return IRQ_HANDLED;
 }
 
@@ -548,37 +548,15 @@ static int ticnt_save;
 
 static int s3c_rtc_suspend(struct platform_device *pdev, pm_message_t state)
 {
-	struct rtc_time tm;
-	struct timespec time;
-
-	time.tv_nsec = 0;
-
 	/* save TICNT for anyone using periodic interrupts */
-
 	ticnt_save = readb(s3c_rtc_base + S3C2410_TICNT);
-
-	/* calculate time delta for suspend */
-
-	s3c_rtc_gettime(&pdev->dev, &tm);
-	rtc_tm_to_time(&tm, &time.tv_sec);
-	save_time_delta(&s3c_rtc_delta, &time);
 	s3c_rtc_enable(pdev, 0);
-
 	return 0;
 }
 
 static int s3c_rtc_resume(struct platform_device *pdev)
 {
-	struct rtc_time tm;
-	struct timespec time;
-
-	time.tv_nsec = 0;
-
 	s3c_rtc_enable(pdev, 1);
-	s3c_rtc_gettime(&pdev->dev, &tm);
-	rtc_tm_to_time(&tm, &time.tv_sec);
-	restore_time_delta(&s3c_rtc_delta, &time);
-
 	writeb(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
 	return 0;
 }
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 677bae820dc..0918b787c4d 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -93,7 +93,7 @@ static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
 	if (rtsr & RTSR_HZ)
 		events |= RTC_UF | RTC_IRQF;
 
-	rtc_update_irq(&rtc->class_dev, 1, events);
+	rtc_update_irq(rtc, 1, events);
 
 	if (rtsr & RTSR_AL && rtc_periodic_alarm(&rtc_alarm))
 		rtc_update_alarm(&rtc_alarm);
@@ -119,7 +119,7 @@ static irqreturn_t timer1_interrupt(int irq, void *dev_id)
 	 */
 	OSSR = OSSR_M1;	/* clear match on timer1 */
 
-	rtc_update_irq(&rtc->class_dev, rtc_timer1_count, RTC_PF | RTC_IRQF);
+	rtc_update_irq(rtc, rtc_timer1_count, RTC_PF | RTC_IRQF);
 
 	if (rtc_timer1_count == 1)
 		rtc_timer1_count = (rtc_freq * ((1<<30)/(TIMER_FREQ>>2)));
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index 198b9f22fbf..e0f91dfce0f 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -104,7 +104,7 @@ static irqreturn_t sh_rtc_interrupt(int irq, void *dev_id)
 
 	writeb(tmp, rtc->regbase + RCR1);
 
-	rtc_update_irq(&rtc->rtc_dev->class_dev, 1, events);
+	rtc_update_irq(rtc->rtc_dev, 1, events);
 
 	spin_unlock(&rtc->lock);
 
@@ -139,7 +139,7 @@ static irqreturn_t sh_rtc_alarm(int irq, void *dev_id)
 
 		rtc->rearm_aie = 1;
 
-		rtc_update_irq(&rtc->rtc_dev->class_dev, 1, events);
+		rtc_update_irq(rtc->rtc_dev, 1, events);
 	}
 
 	spin_unlock(&rtc->lock);
@@ -153,7 +153,7 @@ static irqreturn_t sh_rtc_periodic(int irq, void *dev_id)
 
 	spin_lock(&rtc->lock);
 
-	rtc_update_irq(&rtc->rtc_dev->class_dev, 1, RTC_PF | RTC_IRQF);
+	rtc_update_irq(rtc->rtc_dev, 1, RTC_PF | RTC_IRQF);
 
 	spin_unlock(&rtc->lock);
 
@@ -341,7 +341,7 @@ static int sh_rtc_read_time(struct device *dev, struct rtc_time *tm)
 		tm->tm_sec--;
 #endif
 
-	dev_dbg(&dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
+	dev_dbg(dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
 		"mday=%d, mon=%d, year=%d, wday=%d\n",
 		__FUNCTION__,
 		tm->tm_sec, tm->tm_min, tm->tm_hour,
diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c
index 899ab8c514f..69df94b4484 100644
--- a/drivers/rtc/rtc-sysfs.c
+++ b/drivers/rtc/rtc-sysfs.c
@@ -12,20 +12,26 @@
 #include <linux/module.h>
 #include <linux/rtc.h>
 
+#include "rtc-core.h"
+
+
 /* device attributes */
 
-static ssize_t rtc_sysfs_show_name(struct class_device *dev, char *buf)
+static ssize_t
+rtc_sysfs_show_name(struct device *dev, struct device_attribute *attr,
+		char *buf)
 {
 	return sprintf(buf, "%s\n", to_rtc_device(dev)->name);
 }
-static CLASS_DEVICE_ATTR(name, S_IRUGO, rtc_sysfs_show_name, NULL);
 
-static ssize_t rtc_sysfs_show_date(struct class_device *dev, char *buf)
+static ssize_t
+rtc_sysfs_show_date(struct device *dev, struct device_attribute *attr,
+		char *buf)
 {
 	ssize_t retval;
 	struct rtc_time tm;
 
-	retval = rtc_read_time(dev, &tm);
+	retval = rtc_read_time(to_rtc_device(dev), &tm);
 	if (retval == 0) {
 		retval = sprintf(buf, "%04d-%02d-%02d\n",
 			tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
@@ -33,14 +39,15 @@ static ssize_t rtc_sysfs_show_date(struct class_device *dev, char *buf)
 
 	return retval;
 }
-static CLASS_DEVICE_ATTR(date, S_IRUGO, rtc_sysfs_show_date, NULL);
 
-static ssize_t rtc_sysfs_show_time(struct class_device *dev, char *buf)
+static ssize_t
+rtc_sysfs_show_time(struct device *dev, struct device_attribute *attr,
+		char *buf)
 {
 	ssize_t retval;
 	struct rtc_time tm;
 
-	retval = rtc_read_time(dev, &tm);
+	retval = rtc_read_time(to_rtc_device(dev), &tm);
 	if (retval == 0) {
 		retval = sprintf(buf, "%02d:%02d:%02d\n",
 			tm.tm_hour, tm.tm_min, tm.tm_sec);
@@ -48,14 +55,15 @@ static ssize_t rtc_sysfs_show_time(struct class_device *dev, char *buf)
 
 	return retval;
 }
-static CLASS_DEVICE_ATTR(time, S_IRUGO, rtc_sysfs_show_time, NULL);
 
-static ssize_t rtc_sysfs_show_since_epoch(struct class_device *dev, char *buf)
+static ssize_t
+rtc_sysfs_show_since_epoch(struct device *dev, struct device_attribute *attr,
+		char *buf)
 {
 	ssize_t retval;
 	struct rtc_time tm;
 
-	retval = rtc_read_time(dev, &tm);
+	retval = rtc_read_time(to_rtc_device(dev), &tm);
 	if (retval == 0) {
 		unsigned long time;
 		rtc_tm_to_time(&tm, &time);
@@ -64,23 +72,18 @@ static ssize_t rtc_sysfs_show_since_epoch(struct class_device *dev, char *buf)
 
 	return retval;
 }
-static CLASS_DEVICE_ATTR(since_epoch, S_IRUGO, rtc_sysfs_show_since_epoch, NULL);
-
-static struct attribute *rtc_attrs[] = {
-	&class_device_attr_name.attr,
-	&class_device_attr_date.attr,
-	&class_device_attr_time.attr,
-	&class_device_attr_since_epoch.attr,
-	NULL,
-};
 
-static struct attribute_group rtc_attr_group = {
-	.attrs = rtc_attrs,
+static struct device_attribute rtc_attrs[] = {
+	__ATTR(name, S_IRUGO, rtc_sysfs_show_name, NULL),
+	__ATTR(date, S_IRUGO, rtc_sysfs_show_date, NULL),
+	__ATTR(time, S_IRUGO, rtc_sysfs_show_time, NULL),
+	__ATTR(since_epoch, S_IRUGO, rtc_sysfs_show_since_epoch, NULL),
+	{ },
 };
 
-
 static ssize_t
-rtc_sysfs_show_wakealarm(struct class_device *dev, char *buf)
+rtc_sysfs_show_wakealarm(struct device *dev, struct device_attribute *attr,
+		char *buf)
 {
 	ssize_t retval;
 	unsigned long alarm;
@@ -94,7 +97,7 @@ rtc_sysfs_show_wakealarm(struct class_device *dev, char *buf)
 	 * REVISIT maybe we should require RTC implementations to
 	 * disable the RTC alarm after it triggers, for uniformity.
 	 */
-	retval = rtc_read_alarm(dev, &alm);
+	retval = rtc_read_alarm(to_rtc_device(dev), &alm);
 	if (retval == 0 && alm.enabled) {
 		rtc_tm_to_time(&alm.time, &alarm);
 		retval = sprintf(buf, "%lu\n", alarm);
@@ -104,16 +107,18 @@ rtc_sysfs_show_wakealarm(struct class_device *dev, char *buf)
 }
 
 static ssize_t
-rtc_sysfs_set_wakealarm(struct class_device *dev, const char *buf, size_t n)
+rtc_sysfs_set_wakealarm(struct device *dev, struct device_attribute *attr,
+		const char *buf, size_t n)
 {
 	ssize_t retval;
 	unsigned long now, alarm;
 	struct rtc_wkalrm alm;
+	struct rtc_device *rtc = to_rtc_device(dev);
 
 	/* Only request alarms that trigger in the future.  Disable them
 	 * by writing another time, e.g. 0 meaning Jan 1 1970 UTC.
 	 */
-	retval = rtc_read_time(dev, &alm.time);
+	retval = rtc_read_time(rtc, &alm.time);
 	if (retval < 0)
 		return retval;
 	rtc_tm_to_time(&alm.time, &now);
@@ -124,7 +129,7 @@ rtc_sysfs_set_wakealarm(struct class_device *dev, const char *buf, size_t n)
 		 * entirely prevent that here, without even the minimal
 		 * locking from the /dev/rtcN api.
 		 */
-		retval = rtc_read_alarm(dev, &alm);
+		retval = rtc_read_alarm(rtc, &alm);
 		if (retval < 0)
 			return retval;
 		if (alm.enabled)
@@ -141,10 +146,10 @@ rtc_sysfs_set_wakealarm(struct class_device *dev, const char *buf, size_t n)
 	}
 	rtc_time_to_tm(alarm, &alm.time);
 
-	retval = rtc_set_alarm(dev, &alm);
+	retval = rtc_set_alarm(rtc, &alm);
 	return (retval < 0) ? retval : n;
 }
-static const CLASS_DEVICE_ATTR(wakealarm, S_IRUGO | S_IWUSR,
+static DEVICE_ATTR(wakealarm, S_IRUGO | S_IWUSR,
 		rtc_sysfs_show_wakealarm, rtc_sysfs_set_wakealarm);
 
 
@@ -153,71 +158,37 @@ static const CLASS_DEVICE_ATTR(wakealarm, S_IRUGO | S_IWUSR,
  * suspend-to-disk.  So: no attribute unless that side effect is possible.
  * (Userspace may disable that mechanism later.)
  */
-static inline int rtc_does_wakealarm(struct class_device *class_dev)
+static inline int rtc_does_wakealarm(struct rtc_device *rtc)
 {
-	struct rtc_device *rtc;
-
-	if (!device_can_wakeup(class_dev->dev))
+	if (!device_can_wakeup(rtc->dev.parent))
 		return 0;
-	rtc = to_rtc_device(class_dev);
 	return rtc->ops->set_alarm != NULL;
 }
 
 
-static int rtc_sysfs_add_device(struct class_device *class_dev,
-					struct class_interface *class_intf)
+void rtc_sysfs_add_device(struct rtc_device *rtc)
 {
 	int err;
 
-	dev_dbg(class_dev->dev, "rtc intf: sysfs\n");
+	/* not all RTCs support both alarms and wakeup */
+	if (!rtc_does_wakealarm(rtc))
+		return;
 
-	err = sysfs_create_group(&class_dev->kobj, &rtc_attr_group);
+	err = device_create_file(&rtc->dev, &dev_attr_wakealarm);
 	if (err)
-		dev_err(class_dev->dev, "failed to create %s\n",
-				"sysfs attributes");
-	else if (rtc_does_wakealarm(class_dev)) {
-		/* not all RTCs support both alarms and wakeup */
-		err = class_device_create_file(class_dev,
-					&class_device_attr_wakealarm);
-		if (err) {
-			dev_err(class_dev->dev, "failed to create %s\n",
-					"alarm attribute");
-			sysfs_remove_group(&class_dev->kobj, &rtc_attr_group);
-		}
-	}
-
-	return err;
+		dev_err(rtc->dev.parent, "failed to create "
+				"alarm attribute, %d",
+				err);
 }
 
-static void rtc_sysfs_remove_device(struct class_device *class_dev,
-				struct class_interface *class_intf)
+void rtc_sysfs_del_device(struct rtc_device *rtc)
 {
-	if (rtc_does_wakealarm(class_dev))
-		class_device_remove_file(class_dev,
-				&class_device_attr_wakealarm);
-	sysfs_remove_group(&class_dev->kobj, &rtc_attr_group);
+	/* REVISIT did we add it successfully? */
+	if (rtc_does_wakealarm(rtc))
+		device_remove_file(&rtc->dev, &dev_attr_wakealarm);
 }
 
-/* interface registration */
-
-static struct class_interface rtc_sysfs_interface = {
-	.add = &rtc_sysfs_add_device,
-	.remove = &rtc_sysfs_remove_device,
-};
-
-static int __init rtc_sysfs_init(void)
+void __init rtc_sysfs_init(struct class *rtc_class)
 {
-	return rtc_interface_register(&rtc_sysfs_interface);
+	rtc_class->dev_attrs = rtc_attrs;
 }
-
-static void __exit rtc_sysfs_exit(void)
-{
-	class_interface_unregister(&rtc_sysfs_interface);
-}
-
-subsys_initcall(rtc_sysfs_init);
-module_exit(rtc_sysfs_exit);
-
-MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
-MODULE_DESCRIPTION("RTC class sysfs interface");
-MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c
index f50a1b8e160..254c9fce27d 100644
--- a/drivers/rtc/rtc-test.c
+++ b/drivers/rtc/rtc-test.c
@@ -101,11 +101,11 @@ static ssize_t test_irq_store(struct device *dev,
 	retval = count;
 	local_irq_disable();
 	if (strncmp(buf, "tick", 4) == 0)
-		rtc_update_irq(&rtc->class_dev, 1, RTC_PF | RTC_IRQF);
+		rtc_update_irq(rtc, 1, RTC_PF | RTC_IRQF);
 	else if (strncmp(buf, "alarm", 5) == 0)
-		rtc_update_irq(&rtc->class_dev, 1, RTC_AF | RTC_IRQF);
+		rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF);
 	else if (strncmp(buf, "update", 6) == 0)
-		rtc_update_irq(&rtc->class_dev, 1, RTC_UF | RTC_IRQF);
+		rtc_update_irq(rtc, 1, RTC_UF | RTC_IRQF);
 	else
 		retval = -EINVAL;
 	local_irq_enable();
diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
index e40322b7193..af7596ef29e 100644
--- a/drivers/rtc/rtc-vr41xx.c
+++ b/drivers/rtc/rtc-vr41xx.c
@@ -97,6 +97,7 @@ static DEFINE_SPINLOCK(rtc_lock);
 static char rtc_name[] = "RTC";
 static unsigned long periodic_frequency;
 static unsigned long periodic_count;
+static unsigned int alarm_enabled;
 
 struct resource rtc_resource[2] = {
 	{	.name	= rtc_name,
@@ -188,6 +189,7 @@ static int vr41xx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
 	low = rtc1_read(ECMPLREG);
 	mid = rtc1_read(ECMPMREG);
 	high = rtc1_read(ECMPHREG);
+	wkalrm->enabled = alarm_enabled;
 
 	spin_unlock_irq(&rtc_lock);
 
@@ -206,10 +208,18 @@ static int vr41xx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
 
 	spin_lock_irq(&rtc_lock);
 
+	if (alarm_enabled)
+		disable_irq(ELAPSEDTIME_IRQ);
+
 	rtc1_write(ECMPLREG, (uint16_t)(alarm_sec << 15));
 	rtc1_write(ECMPMREG, (uint16_t)(alarm_sec >> 1));
 	rtc1_write(ECMPHREG, (uint16_t)(alarm_sec >> 17));
 
+	if (wkalrm->enabled)
+		enable_irq(ELAPSEDTIME_IRQ);
+
+	alarm_enabled = wkalrm->enabled;
+
 	spin_unlock_irq(&rtc_lock);
 
 	return 0;
@@ -221,10 +231,24 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long
 
 	switch (cmd) {
 	case RTC_AIE_ON:
-		enable_irq(ELAPSEDTIME_IRQ);
+		spin_lock_irq(&rtc_lock);
+
+		if (!alarm_enabled) {
+			enable_irq(ELAPSEDTIME_IRQ);
+			alarm_enabled = 1;
+		}
+
+		spin_unlock_irq(&rtc_lock);
 		break;
 	case RTC_AIE_OFF:
-		disable_irq(ELAPSEDTIME_IRQ);
+		spin_lock_irq(&rtc_lock);
+
+		if (alarm_enabled) {
+			disable_irq(ELAPSEDTIME_IRQ);
+			alarm_enabled = 0;
+		}
+
+		spin_unlock_irq(&rtc_lock);
 		break;
 	case RTC_PIE_ON:
 		enable_irq(RTCLONG1_IRQ);
@@ -275,7 +299,7 @@ static irqreturn_t elapsedtime_interrupt(int irq, void *dev_id)
 
 	rtc2_write(RTCINTREG, ELAPSEDTIME_INT);
 
-	rtc_update_irq(&rtc->class_dev, 1, RTC_AF);
+	rtc_update_irq(rtc, 1, RTC_AF);
 
 	return IRQ_HANDLED;
 }
@@ -291,7 +315,7 @@ static irqreturn_t rtclong1_interrupt(int irq, void *dev_id)
 	rtc1_write(RTCL1LREG, count);
 	rtc1_write(RTCL1HREG, count >> 16);
 
-	rtc_update_irq(&rtc->class_dev, 1, RTC_PF);
+	rtc_update_irq(rtc, 1, RTC_PF);
 
 	return IRQ_HANDLED;
 }