Merge branch 'next' into for-linus

author: Dmitry Torokhov <dmitry.torokhov@gmail.com> 2012-05-24 04:13:01 -0400
committer: Dmitry Torokhov <dmitry.torokhov@gmail.com> 2012-05-24 04:13:01 -0400
commit: e644dae645e167d154c0526358940986682a72b0 (patch)
tree: 972993c6568085b8d407fc7e13de10f4b93c651d /drivers/rtc
parent: 899c612d74d4a242158a4db20367388d6299c028 (diff)
parent: 86809173ce32ef03bd4d0389dfc72df0c805e9c4 (diff)
60 files changed, 1110 insertions, 720 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 3a125b835546..8c8377d50c4c 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -554,6 +554,13 @@ config RTC_DRV_DS1742
          This driver can also be built as a module. If so, the module
          will be called rtc-ds1742.
+config RTC_DRV_DA9052
+        tristate "Dialog DA9052/DA9053 RTC"
+        depends on PMIC_DA9052
+        help
+          Say y here to support the RTC driver for Dialog Semiconductor
+          DA9052-BC and DA9053-AA/Bx PMICs.
 config RTC_DRV_EFI
        tristate "EFI RTC"
        depends on IA64
@@ -748,7 +755,7 @@ config HAVE_S3C_RTC
 config RTC_DRV_S3C
        tristate "Samsung S3C series SoC RTC"
-        depends on ARCH_S3C2410 || ARCH_S3C64XX || HAVE_S3C_RTC
+        depends on ARCH_S3C64XX || HAVE_S3C_RTC
        help
          RTC (Realtime Clock) driver for the clock inbuilt into the
          Samsung S3C24XX series of SoCs. This can provide periodic
@@ -773,8 +780,8 @@ config RTC_DRV_EP93XX
          will be called rtc-ep93xx.
 config RTC_DRV_SA1100
-        tristate "SA11x0/PXA2xx"
+        tristate "SA11x0/PXA2xx/PXA910"
-        depends on ARCH_SA1100 || ARCH_PXA
+        depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
        help
          If you say Y here you will get access to the real time clock
          built into your SA11x0 or PXA2xx CPU.
@@ -1070,4 +1077,14 @@ config RTC_DRV_PUV3
          This drive can also be built as a module. If so, the module
          will be called rtc-puv3.
+config RTC_DRV_LOONGSON1
+        tristate "loongson1 RTC support"
+        depends on MACH_LOONGSON1
+        help
+          This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
+          counter) to be used as a RTC.
+          This driver can also be built as a module. If so, the module
+          will be called rtc-ls1x.
 endif # RTC_CLASS
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 6e6982335c10..727ae7786e6c 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_RTC_DRV_BQ32K)	+= rtc-bq32k.o
 obj-$(CONFIG_RTC_DRV_BQ4802)    += rtc-bq4802.o
 obj-$(CONFIG_RTC_DRV_CMOS)      += rtc-cmos.o
 obj-$(CONFIG_RTC_DRV_COH901331) += rtc-coh901331.o
+obj-$(CONFIG_RTC_DRV_DA9052)    += rtc-da9052.o
 obj-$(CONFIG_RTC_DRV_DAVINCI)   += rtc-davinci.o
 obj-$(CONFIG_RTC_DRV_DM355EVM)  += rtc-dm355evm.o
 obj-$(CONFIG_RTC_DRV_VRTC)      += rtc-mrst.o
@@ -53,6 +54,7 @@ obj-$(CONFIG_RTC_DRV_ISL1208)	+= rtc-isl1208.o
 obj-$(CONFIG_RTC_DRV_ISL12022)  += rtc-isl12022.o
 obj-$(CONFIG_RTC_DRV_JZ4740)    += rtc-jz4740.o
 obj-$(CONFIG_RTC_DRV_LPC32XX)   += rtc-lpc32xx.o
+obj-$(CONFIG_RTC_DRV_LOONGSON1) += rtc-ls1x.o
 obj-$(CONFIG_RTC_DRV_M41T80)    += rtc-m41t80.o
 obj-$(CONFIG_RTC_DRV_M41T93)    += rtc-m41t93.o
 obj-$(CONFIG_RTC_DRV_M41T94)    += rtc-m41t94.o
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 8a1c031391d6..eb415bd76494 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -73,6 +73,8 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm)
                err = -EINVAL;
        mutex_unlock(&rtc->ops_lock);
+        /* A timer might have just expired */
+        schedule_work(&rtc->irqwork);
        return err;
 }
 EXPORT_SYMBOL_GPL(rtc_set_time);
@@ -112,6 +114,8 @@ int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs)
                err = -EINVAL;
        mutex_unlock(&rtc->ops_lock);
+        /* A timer might have just expired */
+        schedule_work(&rtc->irqwork);
        return err;
 }
@@ -380,18 +384,27 @@ EXPORT_SYMBOL_GPL(rtc_set_alarm);
 int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
 {
        int err;
+        struct rtc_time now;
        err = rtc_valid_tm(&alarm->time);
        if (err != 0)
                return err;
+        err = rtc_read_time(rtc, &now);
+        if (err)
+                return err;
        err = mutex_lock_interruptible(&rtc->ops_lock);
        if (err)
                return err;
        rtc->aie_timer.node.expires = rtc_tm_to_ktime(alarm->time);
        rtc->aie_timer.period = ktime_set(0, 0);
-        if (alarm->enabled) {
+        /* Alarm has to be enabled & in the futrure for us to enqueue it */
+        if (alarm->enabled && (rtc_tm_to_ktime(now).tv64 <
+                         rtc->aie_timer.node.expires.tv64)) {
                rtc->aie_timer.enabled = 1;
                timerqueue_add(&rtc->timerqueue, &rtc->aie_timer.node);
        }
@@ -445,6 +458,11 @@ int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled)
        if (rtc->uie_rtctimer.enabled == enabled)
                goto out;
+        if (rtc->uie_unsupported) {
+                err = -EINVAL;
+                goto out;
+        }
        if (enabled) {
                struct rtc_time tm;
                ktime_t now, onesec;
@@ -763,6 +781,14 @@ static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer)
        return 0;
 }
+static void rtc_alarm_disable(struct rtc_device *rtc)
+{
+        if (!rtc->ops || !rtc->ops->alarm_irq_enable)
+                return;
+        rtc->ops->alarm_irq_enable(rtc->dev.parent, false);
+}
 /**
 * rtc_timer_remove - Removes a rtc_timer from the rtc_device timerqueue
 * @rtc rtc device
@@ -784,8 +810,10 @@ static void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer)
                struct rtc_wkalrm alarm;
                int err;
                next = timerqueue_getnext(&rtc->timerqueue);
-                if (!next)
+                if (!next) {
+                        rtc_alarm_disable(rtc);
                        return;
+                }
                alarm.time = rtc_ktime_to_tm(next->expires);
                alarm.enabled = 1;
                err = __rtc_set_alarm(rtc, &alarm);
@@ -847,7 +875,8 @@ again:
                err = __rtc_set_alarm(rtc, &alarm);
                if (err == -ETIME)
                        goto again;
-        }
+        } else
+                rtc_alarm_disable(rtc);
        mutex_unlock(&rtc->ops_lock);
 }
diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c
index f04761e6622d..feddefc42109 100644
--- a/drivers/rtc/rtc-88pm860x.c
+++ b/drivers/rtc/rtc-88pm860x.c
@@ -72,9 +72,9 @@ static int pm860x_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
        struct pm860x_rtc_info *info = dev_get_drvdata(dev);
        if (enabled)
-                pm860x_set_bits(info->i2c, PM8607_RTC1, ALARM, ALARM);
+                pm860x_set_bits(info->i2c, PM8607_RTC1, ALARM_EN, ALARM_EN);
        else
-                pm860x_set_bits(info->i2c, PM8607_RTC1, ALARM, 0);
+                pm860x_set_bits(info->i2c, PM8607_RTC1, ALARM_EN, 0);
        return 0;
 }
@@ -376,6 +376,9 @@ static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
        INIT_DELAYED_WORK(&info->calib_work, calibrate_vrtc_work);
        schedule_delayed_work(&info->calib_work, VRTC_CALIB_INTERVAL);
 #endif  /* VRTC_CALIBRATION */
+        device_init_wakeup(&pdev->dev, 1);
        return 0;
 out_rtc:
        free_irq(info->irq, info);
@@ -401,10 +404,34 @@ static int __devexit pm860x_rtc_remove(struct platform_device *pdev)
        return 0;
 }
+#ifdef CONFIG_PM_SLEEP
+static int pm860x_rtc_suspend(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+        if (device_may_wakeup(dev))
+                chip->wakeup_flag |= 1 << PM8607_IRQ_RTC;
+        return 0;
+}
+static int pm860x_rtc_resume(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+        if (device_may_wakeup(dev))
+                chip->wakeup_flag &= ~(1 << PM8607_IRQ_RTC);
+        return 0;
+}
+#endif
+static SIMPLE_DEV_PM_OPS(pm860x_rtc_pm_ops, pm860x_rtc_suspend, pm860x_rtc_resume);
 static struct platform_driver pm860x_rtc_driver = {
        .driver         = {
                .name   = "88pm860x-rtc",
                .owner  = THIS_MODULE,
+                .pm     = &pm860x_rtc_pm_ops,
        },
        .probe          = pm860x_rtc_probe,
        .remove         = __devexit_p(pm860x_rtc_remove),
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index ee3c122c0599..831868904e02 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -57,6 +57,7 @@ struct sam9_rtc {
        void __iomem            *rtt;
        struct rtc_device       *rtcdev;
        u32                     imr;
+        void __iomem            *gpbr;
 };
 #define rtt_readl(rtc, field) \
@@ -65,9 +66,9 @@ struct sam9_rtc {
        __raw_writel((val), (rtc)->rtt + AT91_RTT_ ## field)
 #define gpbr_readl(rtc) \
-        at91_sys_read(AT91_GPBR + 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR)
+        __raw_readl((rtc)->gpbr)
 #define gpbr_writel(rtc, val) \
-        at91_sys_write(AT91_GPBR + 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR, (val))
+        __raw_writel((val), (rtc)->gpbr)
 /*
 * Read current time and date in RTC
@@ -287,16 +288,19 @@ static const struct rtc_class_ops at91_rtc_ops = {
 /*
 * Initialize and install RTC driver
 */
-static int __init at91_rtc_probe(struct platform_device *pdev)
+static int __devinit at91_rtc_probe(struct platform_device *pdev)
 {
-        struct resource *r;
+        struct resource *r, *r_gpbr;
        struct sam9_rtc *rtc;
        int             ret;
        u32             mr;
        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (!r)
+        r_gpbr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+        if (!r || !r_gpbr) {
+                dev_err(&pdev->dev, "need 2 ressources\n");
                return -ENODEV;
+        }
        rtc = kzalloc(sizeof *rtc, GFP_KERNEL);
        if (!rtc)
@@ -314,6 +318,13 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
                goto fail;
        }
+        rtc->gpbr = ioremap(r_gpbr->start, resource_size(r_gpbr));
+        if (!rtc->gpbr) {
+                dev_err(&pdev->dev, "failed to map gpbr registers, aborting.\n");
+                ret = -ENOMEM;
+                goto fail_gpbr;
+        }
        mr = rtt_readl(rtc, MR);
        /* unless RTT is counting at 1 Hz, re-initialize it */
@@ -335,12 +346,12 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
        /* register irq handler after we know what name we'll use */
        ret = request_irq(AT91_ID_SYS, at91_rtc_interrupt,
-                                IRQF_DISABLED | IRQF_SHARED,
+                                IRQF_SHARED,
                                dev_name(&rtc->rtcdev->dev), rtc);
        if (ret) {
                dev_dbg(&pdev->dev, "can't share IRQ %d?\n", AT91_ID_SYS);
                rtc_device_unregister(rtc->rtcdev);
-                goto fail;
+                goto fail_register;
        }
        /* NOTE:  sam9260 rev A silicon has a ROM bug which resets the
@@ -356,6 +367,8 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
        return 0;
 fail_register:
+        iounmap(rtc->gpbr);
+fail_gpbr:
        iounmap(rtc->rtt);
 fail:
        platform_set_drvdata(pdev, NULL);
@@ -366,7 +379,7 @@ fail:
 /*
 * Disable and remove the RTC driver
 */
-static int __exit at91_rtc_remove(struct platform_device *pdev)
+static int __devexit at91_rtc_remove(struct platform_device *pdev)
 {
        struct sam9_rtc *rtc = platform_get_drvdata(pdev);
        u32             mr = rtt_readl(rtc, MR);
@@ -377,6 +390,7 @@ static int __exit at91_rtc_remove(struct platform_device *pdev)
        rtc_device_unregister(rtc->rtcdev);
+        iounmap(rtc->gpbr);
        iounmap(rtc->rtt);
        platform_set_drvdata(pdev, NULL);
        kfree(rtc);
@@ -440,63 +454,20 @@ static int at91_rtc_resume(struct platform_device *pdev)
 #endif
 static struct platform_driver at91_rtc_driver = {
-        .driver.name    = "rtc-at91sam9",
+        .probe          = at91_rtc_probe,
-        .driver.owner   = THIS_MODULE,
+        .remove         = __devexit_p(at91_rtc_remove),
-        .remove         = __exit_p(at91_rtc_remove),
        .shutdown       = at91_rtc_shutdown,
        .suspend        = at91_rtc_suspend,
        .resume         = at91_rtc_resume,
+        .driver         = {
+                .name   = "rtc-at91sam9",
+                .owner  = THIS_MODULE,
+        },
 };
-/* Chips can have more than one RTT module, and they can be used for more
- * than just RTCs.  So we can't just register as "the" RTT driver.
- *
- * A normal approach in such cases is to create a library to allocate and
- * free the modules.  Here we just use bus_find_device() as like such a
- * library, binding directly ... no runtime "library" footprint is needed.
- */
-static int __init at91_rtc_match(struct device *dev, void *v)
-{
-        struct platform_device *pdev = to_platform_device(dev);
-        int ret;
-        /* continue searching if this isn't the RTT we need */
-        if (strcmp("at91_rtt", pdev->name) != 0
-                        || pdev->id != CONFIG_RTC_DRV_AT91SAM9_RTT)
-                goto fail;
-        /* else we found it ... but fail unless we can bind to the RTC driver */
-        if (dev->driver) {
-                dev_dbg(dev, "busy, can't use as RTC!\n");
-                goto fail;
-        }
-        dev->driver = &at91_rtc_driver.driver;
-        if (device_attach(dev) == 0) {
-                dev_dbg(dev, "can't attach RTC!\n");
-                goto fail;
-        }
-        ret = at91_rtc_probe(pdev);
-        if (ret == 0)
-                return true;
-        dev_dbg(dev, "RTC probe err %d!\n", ret);
-fail:
-        return false;
-}
 static int __init at91_rtc_init(void)
 {
-        int status;
+        return platform_driver_register(&at91_rtc_driver);
-        struct device *rtc;
-        status = platform_driver_register(&at91_rtc_driver);
-        if (status)
-                return status;
-        rtc = bus_find_device(&platform_bus_type, NULL,
-                        NULL, at91_rtc_match);
-        if (!rtc)
-                platform_driver_unregister(&at91_rtc_driver);
-        return rtc ? 0 : -ENODEV;
 }
 module_init(at91_rtc_init);
diff --git a/drivers/rtc/rtc-bq32k.c b/drivers/rtc/rtc-bq32k.c
index 408cc8f735be..f090159dce4a 100644
--- a/drivers/rtc/rtc-bq32k.c
+++ b/drivers/rtc/rtc-bq32k.c
@@ -187,17 +187,7 @@ static struct i2c_driver bq32k_driver = {
        .id_table       = bq32k_id,
 };
-static __init int bq32k_init(void)
+module_i2c_driver(bq32k_driver);
-{
-        return i2c_add_driver(&bq32k_driver);
-}
-module_init(bq32k_init);
-static __exit void bq32k_exit(void)
-{
-        i2c_del_driver(&bq32k_driver);
-}
-module_exit(bq32k_exit);
 MODULE_AUTHOR("Semihalf, Piotr Ziecik <kosmo@semihalf.com>");
 MODULE_DESCRIPTION("TI BQ32000 I2C RTC driver");
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index d7782aa09943..7d5f56edb8ef 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -714,7 +714,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
                        rtc_cmos_int_handler = cmos_interrupt;
                retval = request_irq(rtc_irq, rtc_cmos_int_handler,
-                                IRQF_DISABLED, dev_name(&cmos_rtc.rtc->dev),
+                                0, dev_name(&cmos_rtc.rtc->dev),
                                cmos_rtc.rtc);
                if (retval < 0) {
                        dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq);
diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c
index 80f9c88214c5..a5b8a0c4ea84 100644
--- a/drivers/rtc/rtc-coh901331.c
+++ b/drivers/rtc/rtc-coh901331.c
@@ -199,7 +199,7 @@ static int __init coh901331_probe(struct platform_device *pdev)
        }
        rtap->irq = platform_get_irq(pdev, 0);
-        if (request_irq(rtap->irq, coh901331_interrupt, IRQF_DISABLED,
+        if (request_irq(rtap->irq, coh901331_interrupt, 0,
                        "RTC COH 901 331 Alarm", rtap)) {
                ret = -EIO;
                goto out_no_irq;
diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c
new file mode 100644
index 000000000000..da6ab5291a41
--- /dev/null
+++ b/drivers/rtc/rtc-da9052.c
@@ -0,0 +1,293 @@
+/*
+ * Real time clock driver for DA9052
+ *
+ * Copyright(c) 2012 Dialog Semiconductor Ltd.
+ *
+ * Author: Dajun Dajun Chen <dajun.chen@diasemi.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/reg.h>
+#define rtc_err(da9052, fmt, ...) \
+                dev_err(da9052->dev, "%s: " fmt, __func__, ##__VA_ARGS__)
+struct da9052_rtc {
+        struct rtc_device *rtc;
+        struct da9052 *da9052;
+        int irq;
+};
+static int da9052_rtc_enable_alarm(struct da9052 *da9052, bool enable)
+{
+        int ret;
+        if (enable) {
+                ret = da9052_reg_update(da9052, DA9052_ALARM_Y_REG,
+                                        DA9052_ALARM_Y_ALARM_ON,
+                                        DA9052_ALARM_Y_ALARM_ON);
+                if (ret != 0)
+                        rtc_err(da9052, "Failed to enable ALM: %d\n", ret);
+        } else {
+                ret = da9052_reg_update(da9052, DA9052_ALARM_Y_REG,
+                                        DA9052_ALARM_Y_ALARM_ON, 0);
+                if (ret != 0)
+                        rtc_err(da9052, "Write error: %d\n", ret);
+        }
+        return ret;
+}
+static irqreturn_t da9052_rtc_irq(int irq, void *data)
+{
+        struct da9052_rtc *rtc = data;
+        int ret;
+        ret = da9052_reg_read(rtc->da9052, DA9052_ALARM_MI_REG);
+        if (ret < 0) {
+                rtc_err(rtc->da9052, "Read error: %d\n", ret);
+                return IRQ_NONE;
+        }
+        if (ret & DA9052_ALARMMI_ALARMTYPE) {
+                da9052_rtc_enable_alarm(rtc->da9052, 0);
+                rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_AF);
+        } else
+                rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_PF);
+        return IRQ_HANDLED;
+}
+static int da9052_read_alarm(struct da9052 *da9052, struct rtc_time *rtc_tm)
+{
+        int ret;
+        uint8_t v[5];
+        ret = da9052_group_read(da9052, DA9052_ALARM_MI_REG, 5, v);
+        if (ret != 0) {
+                rtc_err(da9052, "Failed to group read ALM: %d\n", ret);
+                return ret;
+        }
+        rtc_tm->tm_year = (v[4] & DA9052_RTC_YEAR) + 100;
+        rtc_tm->tm_mon  = (v[3] & DA9052_RTC_MONTH) - 1;
+        rtc_tm->tm_mday = v[2] & DA9052_RTC_DAY;
+        rtc_tm->tm_hour = v[1] & DA9052_RTC_HOUR;
+        rtc_tm->tm_min  = v[0] & DA9052_RTC_MIN;
+        ret = rtc_valid_tm(rtc_tm);
+        if (ret != 0)
+                return ret;
+        return ret;
+}
+static int da9052_set_alarm(struct da9052 *da9052, struct rtc_time *rtc_tm)
+{
+        int ret;
+        uint8_t v[3];
+        rtc_tm->tm_year -= 100;
+        rtc_tm->tm_mon += 1;
+        ret = da9052_reg_update(da9052, DA9052_ALARM_MI_REG,
+                                DA9052_RTC_MIN, rtc_tm->tm_min);
+        if (ret != 0) {
+                rtc_err(da9052, "Failed to write ALRM MIN: %d\n", ret);
+                return ret;
+        }
+        v[0] = rtc_tm->tm_hour;
+        v[1] = rtc_tm->tm_mday;
+        v[2] = rtc_tm->tm_mon;
+        ret = da9052_group_write(da9052, DA9052_ALARM_H_REG, 3, v);
+        if (ret < 0)
+                return ret;
+        ret = da9052_reg_update(da9052, DA9052_ALARM_Y_REG,
+                                DA9052_RTC_YEAR, rtc_tm->tm_year);
+        if (ret != 0)
+                rtc_err(da9052, "Failed to write ALRM YEAR: %d\n", ret);
+        return ret;
+}
+static int da9052_rtc_get_alarm_status(struct da9052 *da9052)
+{
+        int ret;
+        ret = da9052_reg_read(da9052, DA9052_ALARM_Y_REG);
+        if (ret < 0) {
+                rtc_err(da9052, "Failed to read ALM: %d\n", ret);
+                return ret;
+        }
+        ret &= DA9052_ALARM_Y_ALARM_ON;
+        return (ret > 0) ? 1 : 0;
+}
+static int da9052_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm)
+{
+        struct da9052_rtc *rtc = dev_get_drvdata(dev);
+        uint8_t v[6];
+        int ret;
+        ret = da9052_group_read(rtc->da9052, DA9052_COUNT_S_REG, 6, v);
+        if (ret < 0) {
+                rtc_err(rtc->da9052, "Failed to read RTC time : %d\n", ret);
+                return ret;
+        }
+        rtc_tm->tm_year = (v[5] & DA9052_RTC_YEAR) + 100;
+        rtc_tm->tm_mon  = (v[4] & DA9052_RTC_MONTH) - 1;
+        rtc_tm->tm_mday = v[3] & DA9052_RTC_DAY;
+        rtc_tm->tm_hour = v[2] & DA9052_RTC_HOUR;
+        rtc_tm->tm_min  = v[1] & DA9052_RTC_MIN;
+        rtc_tm->tm_sec  = v[0] & DA9052_RTC_SEC;
+        ret = rtc_valid_tm(rtc_tm);
+        if (ret != 0) {
+                rtc_err(rtc->da9052, "rtc_valid_tm failed: %d\n", ret);
+                return ret;
+        }
+        return 0;
+}
+static int da9052_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+        struct da9052_rtc *rtc;
+        uint8_t v[6];
+        rtc = dev_get_drvdata(dev);
+        v[0] = tm->tm_sec;
+        v[1] = tm->tm_min;
+        v[2] = tm->tm_hour;
+        v[3] = tm->tm_mday;
+        v[4] = tm->tm_mon + 1;
+        v[5] = tm->tm_year - 100;
+        return da9052_group_write(rtc->da9052, DA9052_COUNT_S_REG, 6, v);
+}
+static int da9052_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+        int ret;
+        struct rtc_time *tm = &alrm->time;
+        struct da9052_rtc *rtc = dev_get_drvdata(dev);
+        ret = da9052_read_alarm(rtc->da9052, tm);
+        if (ret)
+                return ret;
+        alrm->enabled = da9052_rtc_get_alarm_status(rtc->da9052);
+        return 0;
+}
+static int da9052_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+        int ret;
+        struct rtc_time *tm = &alrm->time;
+        struct da9052_rtc *rtc = dev_get_drvdata(dev);
+        ret = da9052_rtc_enable_alarm(rtc->da9052, 0);
+        if (ret < 0)
+                return ret;
+        ret = da9052_set_alarm(rtc->da9052, tm);
+        if (ret)
+                return ret;
+        ret = da9052_rtc_enable_alarm(rtc->da9052, 1);
+        return ret;
+}
+static int da9052_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+        struct da9052_rtc *rtc = dev_get_drvdata(dev);
+        return da9052_rtc_enable_alarm(rtc->da9052, enabled);
+}
+static const struct rtc_class_ops da9052_rtc_ops = {
+        .read_time      = da9052_rtc_read_time,
+        .set_time       = da9052_rtc_set_time,
+        .read_alarm     = da9052_rtc_read_alarm,
+        .set_alarm      = da9052_rtc_set_alarm,
+        .alarm_irq_enable = da9052_rtc_alarm_irq_enable,
+};
+static int __devinit da9052_rtc_probe(struct platform_device *pdev)
+{
+        struct da9052_rtc *rtc;
+        int ret;
+        rtc = devm_kzalloc(&pdev->dev, sizeof(struct da9052_rtc), GFP_KERNEL);
+        if (!rtc)
+                return -ENOMEM;
+        rtc->da9052 = dev_get_drvdata(pdev->dev.parent);
+        platform_set_drvdata(pdev, rtc);
+        rtc->irq = platform_get_irq_byname(pdev, "ALM");
+        ret = request_threaded_irq(rtc->irq, NULL, da9052_rtc_irq,
+                                   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+                                   "ALM", rtc);
+        if (ret != 0) {
+                rtc_err(rtc->da9052, "irq registration failed: %d\n", ret);
+                goto err_mem;
+        }
+        rtc->rtc = rtc_device_register(pdev->name, &pdev->dev,
+                                       &da9052_rtc_ops, THIS_MODULE);
+        if (IS_ERR(rtc->rtc)) {
+                ret = PTR_ERR(rtc->rtc);
+                goto err_free_irq;
+        }
+        return 0;
+err_free_irq:
+        free_irq(rtc->irq, rtc);
+err_mem:
+        devm_kfree(&pdev->dev, rtc);
+        return ret;
+}
+static int __devexit da9052_rtc_remove(struct platform_device *pdev)
+{
+        struct da9052_rtc *rtc = pdev->dev.platform_data;
+        rtc_device_unregister(rtc->rtc);
+        free_irq(rtc->irq, rtc);
+        platform_set_drvdata(pdev, NULL);
+        devm_kfree(&pdev->dev, rtc);
+        return 0;
+}
+static struct platform_driver da9052_rtc_driver = {
+        .probe  = da9052_rtc_probe,
+        .remove = __devexit_p(da9052_rtc_remove),
+        .driver = {
+                .name   = "da9052-rtc",
+                .owner  = THIS_MODULE,
+        },
+};
+module_platform_driver(da9052_rtc_driver);
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
+MODULE_DESCRIPTION("RTC driver for Dialog DA9052 PMIC");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:da9052-rtc");
diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c
index 755e1fe914af..14c2109dbaa3 100644
--- a/drivers/rtc/rtc-davinci.c
+++ b/drivers/rtc/rtc-davinci.c
@@ -542,7 +542,7 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
        rtcss_write(davinci_rtc, 0, PRTCSS_RTC_CCTRL);
        ret = request_irq(davinci_rtc->irq, davinci_rtc_interrupt,
-                          IRQF_DISABLED, "davinci_rtc", davinci_rtc);
+                          0, "davinci_rtc", davinci_rtc);
        if (ret < 0) {
                dev_err(dev, "unable to register davinci RTC interrupt\n");
                goto fail4;
diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index 3a33b1fdbe0f..686a865913e1 100644
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -814,17 +814,7 @@ static struct spi_driver ds1305_driver = {
        /* REVISIT add suspend/resume */
 };
-static int __init ds1305_init(void)
+module_spi_driver(ds1305_driver);
-{
-        return spi_register_driver(&ds1305_driver);
-}
-module_init(ds1305_init);
-static void __exit ds1305_exit(void)
-{
-        spi_unregister_driver(&ds1305_driver);
-}
-module_exit(ds1305_exit);
 MODULE_DESCRIPTION("RTC driver for DS1305 and DS1306 chips");
 MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 62b0763b7b9a..cd188ab72f79 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -20,7 +20,8 @@
-/* We can't determine type by probing, but if we expect pre-Linux code
+/*
+ * We can't determine type by probing, but if we expect pre-Linux code
 * to have set the chip up as a clock (turning on the oscillator and
 * setting the date and time), Linux can ignore the non-clock features.
 * That's a natural job for a factory or repair bench.
@@ -36,7 +37,8 @@ enum ds_type {
        m41t00,
        mcp7941x,
        rx_8025,
-        // rs5c372 too?  different address...
+        last_ds_type /* always last */
+        /* rs5c372 too?  different address... */
 };
@@ -58,7 +60,8 @@ enum ds_type {
 #       define DS1337_BIT_CENTURY       0x80    /* in REG_MONTH */
 #define DS1307_REG_YEAR         0x06    /* 00-99 */
-/* Other registers (control, status, alarms, trickle charge, NVRAM, etc)
+/*
+ * Other registers (control, status, alarms, trickle charge, NVRAM, etc)
 * start at 7, and they differ a LOT. Only control and status matter for
 * basic RTC date and time functionality; be careful using them.
 */
@@ -102,6 +105,8 @@ enum ds_type {
 struct ds1307 {
        u8                      offset; /* register's offset */
        u8                      regs[11];
+        u16                     nvram_offset;
+        struct bin_attribute    *nvram;
        enum ds_type            type;
        unsigned long           flags;
 #define HAS_NVRAM       0               /* bit 0 == sysfs file active */
@@ -116,34 +121,35 @@ struct ds1307 {
 };
 struct chip_desc {
-        unsigned                nvram56:1;
        unsigned                alarm:1;
+        u16                     nvram_offset;
+        u16                     nvram_size;
 };
-static const struct chip_desc chips[] = {
+static const struct chip_desc chips[last_ds_type] = {
-[ds_1307] = {
+        [ds_1307] = {
-        .nvram56        = 1,
+                .nvram_offset   = 8,
-},
+                .nvram_size     = 56,
-[ds_1337] = {
+        },
-        .alarm          = 1,
+        [ds_1337] = {
-},
+                .alarm          = 1,
-[ds_1338] = {
+        },
-        .nvram56        = 1,
+        [ds_1338] = {
-},
+                .nvram_offset   = 8,
-[ds_1339] = {
+                .nvram_size     = 56,
-        .alarm          = 1,
+        },
-},
+        [ds_1339] = {
-[ds_1340] = {
+                .alarm          = 1,
-},
+        },
-[ds_3231] = {
+        [ds_3231] = {
-        .alarm          = 1,
+                .alarm          = 1,
-},
+        },
-[m41t00] = {
+        [mcp7941x] = {
-},
+                /* this is battery backed SRAM */
-[mcp7941x] = {
+                .nvram_offset   = 0x20,
-},
+                .nvram_size     = 0x40,
-[rx_8025] = {
+        },
-}, };
+};
 static const struct i2c_device_id ds1307_id[] = {
        { "ds1307", ds_1307 },
@@ -372,6 +378,11 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
                                | DS1340_BIT_CENTURY;
                break;
        case mcp7941x:
+                /*
+                 * these bits were cleared when preparing the date/time
+                 * values and need to be set again before writing the
+                 * buffer out to the device.
+                 */
                buf[DS1307_REG_SECS] |= MCP7941X_BIT_ST;
                buf[DS1307_REG_WDAY] |= MCP7941X_BIT_VBATEN;
                break;
@@ -417,7 +428,8 @@ static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t)
                        ds1307->regs[6], ds1307->regs[7],
                        ds1307->regs[8]);
-        /* report alarm time (ALARM1); assume 24 hour and day-of-month modes,
+        /*
+         * report alarm time (ALARM1); assume 24 hour and day-of-month modes,
         * and that all four fields are checked matches
         */
        t->time.tm_sec = bcd2bin(ds1307->regs[0] & 0x7f);
@@ -445,7 +457,7 @@ static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t)
 static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
 {
-        struct i2c_client       *client = to_i2c_client(dev);
+        struct i2c_client       *client = to_i2c_client(dev);
        struct ds1307           *ds1307 = i2c_get_clientdata(client);
        unsigned char           *buf = ds1307->regs;
        u8                      control, status;
@@ -541,8 +553,6 @@ static const struct rtc_class_ops ds13xx_rtc_ops = {
 /*----------------------------------------------------------------------*/
-#define NVRAM_SIZE      56
 static ssize_t
 ds1307_nvram_read(struct file *filp, struct kobject *kobj,
                struct bin_attribute *attr,
@@ -555,14 +565,15 @@ ds1307_nvram_read(struct file *filp, struct kobject *kobj,
        client = kobj_to_i2c_client(kobj);
        ds1307 = i2c_get_clientdata(client);
-        if (unlikely(off >= NVRAM_SIZE))
+        if (unlikely(off >= ds1307->nvram->size))
                return 0;
-        if ((off + count) > NVRAM_SIZE)
+        if ((off + count) > ds1307->nvram->size)
-                count = NVRAM_SIZE - off;
+                count = ds1307->nvram->size - off;
        if (unlikely(!count))
                return count;
-        result = ds1307->read_block_data(client, 8 + off, count, buf);
+        result = ds1307->read_block_data(client, ds1307->nvram_offset + off,
+                                                                count, buf);
        if (result < 0)
                dev_err(&client->dev, "%s error %d\n", "nvram read", result);
        return result;
@@ -580,14 +591,15 @@ ds1307_nvram_write(struct file *filp, struct kobject *kobj,
        client = kobj_to_i2c_client(kobj);
        ds1307 = i2c_get_clientdata(client);
-        if (unlikely(off >= NVRAM_SIZE))
+        if (unlikely(off >= ds1307->nvram->size))
                return -EFBIG;
-        if ((off + count) > NVRAM_SIZE)
+        if ((off + count) > ds1307->nvram->size)
-                count = NVRAM_SIZE - off;
+                count = ds1307->nvram->size - off;
        if (unlikely(!count))
                return count;
-        result = ds1307->write_block_data(client, 8 + off, count, buf);
+        result = ds1307->write_block_data(client, ds1307->nvram_offset + off,
+                                                                count, buf);
        if (result < 0) {
                dev_err(&client->dev, "%s error %d\n", "nvram write", result);
                return result;
@@ -595,21 +607,8 @@ ds1307_nvram_write(struct file *filp, struct kobject *kobj,
        return count;
 }
-static struct bin_attribute nvram = {
-        .attr = {
-                .name   = "nvram",
-                .mode   = S_IRUGO | S_IWUSR,
-        },
-        .read   = ds1307_nvram_read,
-        .write  = ds1307_nvram_write,
-        .size   = NVRAM_SIZE,
-};
 /*----------------------------------------------------------------------*/
-static struct i2c_driver ds1307_driver;
 static int __devinit ds1307_probe(struct i2c_client *client,
                                  const struct i2c_device_id *id)
 {
@@ -630,7 +629,8 @@ static int __devinit ds1307_probe(struct i2c_client *client,
            && !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
                return -EIO;
-        if (!(ds1307 = kzalloc(sizeof(struct ds1307), GFP_KERNEL)))
+        ds1307 = kzalloc(sizeof(struct ds1307), GFP_KERNEL);
+        if (!ds1307)
                return -ENOMEM;
        i2c_set_clientdata(client, ds1307);
@@ -652,11 +652,6 @@ static int __devinit ds1307_probe(struct i2c_client *client,
        case ds_1337:
        case ds_1339:
        case ds_3231:
-                /* has IRQ? */
-                if (ds1307->client->irq > 0 && chip->alarm) {
-                        INIT_WORK(&ds1307->work, ds1307_work);
-                        want_irq = true;
-                }
                /* get registers that the "rtc" read below won't read... */
                tmp = ds1307->read_block_data(ds1307->client,
                                DS1337_REG_CONTROL, 2, buf);
@@ -670,14 +665,19 @@ static int __devinit ds1307_probe(struct i2c_client *client,
                if (ds1307->regs[0] & DS1337_BIT_nEOSC)
                        ds1307->regs[0] &= ~DS1337_BIT_nEOSC;
-                /* Using IRQ?  Disable the square wave and both alarms.
+                /*
+                 * Using IRQ?  Disable the square wave and both alarms.
                 * For some variants, be sure alarms can trigger when we're
                 * running on Vbackup (BBSQI/BBSQW)
                 */
-                if (want_irq) {
+                if (ds1307->client->irq > 0 && chip->alarm) {
+                        INIT_WORK(&ds1307->work, ds1307_work);
                        ds1307->regs[0] |= DS1337_BIT_INTCN
                                        | bbsqi_bitpos[ds1307->type];
                        ds1307->regs[0] &= ~(DS1337_BIT_A2IE | DS1337_BIT_A1IE);
+                        want_irq = true;
                }
                i2c_smbus_write_byte_data(client, DS1337_REG_CONTROL,
@@ -772,7 +772,8 @@ read_rtc:
                goto exit_free;
        }
-        /* minimal sanity checking; some chips (like DS1340) don't
+        /*
+         * minimal sanity checking; some chips (like DS1340) don't
         * specify the extra bits as must-be-zero, but there are
         * still a few values that are clearly out-of-range.
         */
@@ -836,11 +837,7 @@ read_rtc:
                }
                break;
-        case rx_8025:
+        default:
-        case ds_1337:
-        case ds_1339:
-        case ds_1388:
-        case ds_3231:
                break;
        }
@@ -848,7 +845,8 @@ read_rtc:
        switch (ds1307->type) {
        case ds_1340:
        case m41t00:
-                /* NOTE: ignores century bits; fix before deploying
+                /*
+                 * NOTE: ignores century bits; fix before deploying
                 * systems that will run through year 2100.
                 */
                break;
@@ -858,7 +856,8 @@ read_rtc:
                if (!(tmp & DS1307_BIT_12HR))
                        break;
-                /* Be sure we're in 24 hour mode.  Multi-master systems
+                /*
+                 * Be sure we're in 24 hour mode.  Multi-master systems
                 * take note...
                 */
                tmp = bcd2bin(tmp & 0x1f);
@@ -894,16 +893,31 @@ read_rtc:
                dev_dbg(&client->dev, "got IRQ %d\n", client->irq);
        }
-        if (chip->nvram56) {
+        if (chip->nvram_size) {
-                err = sysfs_create_bin_file(&client->dev.kobj, &nvram);
+                ds1307->nvram = kzalloc(sizeof(struct bin_attribute),
-                if (err == 0) {
+                                                        GFP_KERNEL);
-                        set_bit(HAS_NVRAM, &ds1307->flags);
+                if (!ds1307->nvram) {
-                        dev_info(&client->dev, "56 bytes nvram\n");
+                        err = -ENOMEM;
+                        goto exit_nvram;
+                }
+                ds1307->nvram->attr.name = "nvram";
+                ds1307->nvram->attr.mode = S_IRUGO | S_IWUSR;
+                ds1307->nvram->read = ds1307_nvram_read,
+                ds1307->nvram->write = ds1307_nvram_write,
+                ds1307->nvram->size = chip->nvram_size;
+                ds1307->nvram_offset = chip->nvram_offset;
+                err = sysfs_create_bin_file(&client->dev.kobj, ds1307->nvram);
+                if (err) {
+                        kfree(ds1307->nvram);
+                        goto exit_nvram;
                }
+                set_bit(HAS_NVRAM, &ds1307->flags);
+                dev_info(&client->dev, "%zu bytes nvram\n", ds1307->nvram->size);
        }
        return 0;
+exit_nvram:
 exit_irq:
        rtc_device_unregister(ds1307->rtc);
 exit_free:
@@ -913,15 +927,17 @@ exit_free:
 static int __devexit ds1307_remove(struct i2c_client *client)
 {
-        struct ds1307           *ds1307 = i2c_get_clientdata(client);
+        struct ds1307 *ds1307 = i2c_get_clientdata(client);
        if (test_and_clear_bit(HAS_ALARM, &ds1307->flags)) {
                free_irq(client->irq, client);
                cancel_work_sync(&ds1307->work);
        }
-        if (test_and_clear_bit(HAS_NVRAM, &ds1307->flags))
+        if (test_and_clear_bit(HAS_NVRAM, &ds1307->flags)) {
-                sysfs_remove_bin_file(&client->dev.kobj, &nvram);
+                sysfs_remove_bin_file(&client->dev.kobj, ds1307->nvram);
+                kfree(ds1307->nvram);
+        }
        rtc_device_unregister(ds1307->rtc);
        kfree(ds1307);
@@ -938,17 +954,7 @@ static struct i2c_driver ds1307_driver = {
        .id_table       = ds1307_id,
 };
-static int __init ds1307_init(void)
+module_i2c_driver(ds1307_driver);
-{
-        return i2c_add_driver(&ds1307_driver);
-}
-module_init(ds1307_init);
-static void __exit ds1307_exit(void)
-{
-        i2c_del_driver(&ds1307_driver);
-}
-module_exit(ds1307_exit);
 MODULE_DESCRIPTION("RTC driver for DS1307 and similar chips");
 MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index e6e71deb188f..966316088b7f 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -446,18 +446,7 @@ static struct i2c_driver ds1374_driver = {
        .id_table = ds1374_id,
 };
-static int __init ds1374_init(void)
+module_i2c_driver(ds1374_driver);
-{
-        return i2c_add_driver(&ds1374_driver);
-}
-static void __exit ds1374_exit(void)
-{
-        i2c_del_driver(&ds1374_driver);
-}
-module_init(ds1374_init);
-module_exit(ds1374_exit);
 MODULE_AUTHOR("Scott Wood <scottwood@freescale.com>");
 MODULE_DESCRIPTION("Maxim/Dallas DS1374 RTC Driver");
diff --git a/drivers/rtc/rtc-ds1390.c b/drivers/rtc/rtc-ds1390.c
index b038d2cfef26..b0a99e1b25be 100644
--- a/drivers/rtc/rtc-ds1390.c
+++ b/drivers/rtc/rtc-ds1390.c
@@ -175,17 +175,7 @@ static struct spi_driver ds1390_driver = {
        .remove = __devexit_p(ds1390_remove),
 };
-static __init int ds1390_init(void)
+module_spi_driver(ds1390_driver);
-{
-        return spi_register_driver(&ds1390_driver);
-}
-module_init(ds1390_init);
-static __exit void ds1390_exit(void)
-{
-        spi_unregister_driver(&ds1390_driver);
-}
-module_exit(ds1390_exit);
 MODULE_DESCRIPTION("Dallas/Maxim DS1390/93/94 SPI RTC driver");
 MODULE_AUTHOR("Mark Jackson <mpfj@mimc.co.uk>");
diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 761f36bc83a9..1f675f5294f5 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -532,7 +532,7 @@ ds1511_rtc_probe(struct platform_device *pdev)
        if (pdata->irq > 0) {
                rtc_read(RTC_CMD1);
                if (devm_request_irq(&pdev->dev, pdata->irq, ds1511_interrupt,
-                        IRQF_DISABLED | IRQF_SHARED, pdev->name, pdev) < 0) {
+                        IRQF_SHARED, pdev->name, pdev) < 0) {
                        dev_warn(&pdev->dev, "interrupt not available.\n");
                        pdata->irq = 0;
diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c
index 6f0a1b530f2e..6ccedbbf923c 100644
--- a/drivers/rtc/rtc-ds1553.c
+++ b/drivers/rtc/rtc-ds1553.c
@@ -320,7 +320,7 @@ static int __devinit ds1553_rtc_probe(struct platform_device *pdev)
                writeb(0, ioaddr + RTC_INTERRUPTS);
                if (devm_request_irq(&pdev->dev, pdata->irq,
                                ds1553_rtc_interrupt,
-                                IRQF_DISABLED, pdev->name, pdev) < 0) {
+                                0, pdev->name, pdev) < 0) {
                        dev_warn(&pdev->dev, "interrupt not available.\n");
                        pdata->irq = 0;
                }
diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c
index a319402a5447..7fa67d0df172 100644
--- a/drivers/rtc/rtc-ds1672.c
+++ b/drivers/rtc/rtc-ds1672.c
@@ -202,20 +202,9 @@ static struct i2c_driver ds1672_driver = {
        .id_table = ds1672_id,
 };
-static int __init ds1672_init(void)
+module_i2c_driver(ds1672_driver);
-{
-        return i2c_add_driver(&ds1672_driver);
-}
-static void __exit ds1672_exit(void)
-{
-        i2c_del_driver(&ds1672_driver);
-}
 MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
 MODULE_DESCRIPTION("Dallas/Maxim DS1672 timekeeper driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
-module_init(ds1672_init);
-module_exit(ds1672_exit);
diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c
index 27b7bf672ac6..e1945095814e 100644
--- a/drivers/rtc/rtc-ds3232.c
+++ b/drivers/rtc/rtc-ds3232.c
@@ -473,18 +473,7 @@ static struct i2c_driver ds3232_driver = {
        .id_table = ds3232_id,
 };
-static int __init ds3232_init(void)
+module_i2c_driver(ds3232_driver);
-{
-        return i2c_add_driver(&ds3232_driver);
-}
-static void __exit ds3232_exit(void)
-{
-        i2c_del_driver(&ds3232_driver);
-}
-module_init(ds3232_init);
-module_exit(ds3232_exit);
 MODULE_AUTHOR("Srikanth Srinivasan <srikanth.srinivasan@freescale.com>");
 MODULE_DESCRIPTION("Maxim/Dallas DS3232 RTC Driver");
diff --git a/drivers/rtc/rtc-ds3234.c b/drivers/rtc/rtc-ds3234.c
index bbd26228f532..fda707926f02 100644
--- a/drivers/rtc/rtc-ds3234.c
+++ b/drivers/rtc/rtc-ds3234.c
@@ -173,17 +173,7 @@ static struct spi_driver ds3234_driver = {
        .remove = __devexit_p(ds3234_remove),
 };
-static __init int ds3234_init(void)
+module_spi_driver(ds3234_driver);
-{
-        return spi_register_driver(&ds3234_driver);
-}
-module_init(ds3234_init);
-static __exit void ds3234_exit(void)
-{
-        spi_unregister_driver(&ds3234_driver);
-}
-module_exit(ds3234_exit);
 MODULE_DESCRIPTION("DS3234 SPI RTC driver");
 MODULE_AUTHOR("Dennis Aberilla <denzzzhome@yahoo.com>");
diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c
index 550292304b0f..c9f890b088da 100644
--- a/drivers/rtc/rtc-efi.c
+++ b/drivers/rtc/rtc-efi.c
@@ -213,7 +213,6 @@ static struct platform_driver efi_rtc_driver = {
                .name = "rtc-efi",
                .owner = THIS_MODULE,
        },
-        .probe = efi_rtc_probe,
        .remove = __exit_p(efi_rtc_remove),
 };
diff --git a/drivers/rtc/rtc-em3027.c b/drivers/rtc/rtc-em3027.c
index 8414dea5fb14..0104ea7ebe50 100644
--- a/drivers/rtc/rtc-em3027.c
+++ b/drivers/rtc/rtc-em3027.c
@@ -144,19 +144,8 @@ static struct i2c_driver em3027_driver = {
        .id_table = em3027_id,
 };
-static int __init em3027_init(void)
+module_i2c_driver(em3027_driver);
-{
-        return i2c_add_driver(&em3027_driver);
-}
-static void __exit em3027_exit(void)
-{
-        i2c_del_driver(&em3027_driver);
-}
 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
 MODULE_DESCRIPTION("EM Microelectronic EM3027 RTC driver");
 MODULE_LICENSE("GPL");
-module_init(em3027_init);
-module_exit(em3027_exit);
diff --git a/drivers/rtc/rtc-fm3130.c b/drivers/rtc/rtc-fm3130.c
index 4cf2e70c5078..86b6ecce99f0 100644
--- a/drivers/rtc/rtc-fm3130.c
+++ b/drivers/rtc/rtc-fm3130.c
@@ -565,17 +565,7 @@ static struct i2c_driver fm3130_driver = {
        .id_table       = fm3130_id,
 };
-static int __init fm3130_init(void)
+module_i2c_driver(fm3130_driver);
-{
-        return i2c_add_driver(&fm3130_driver);
-}
-module_init(fm3130_init);
-static void __exit fm3130_exit(void)
-{
-        i2c_del_driver(&fm3130_driver);
-}
-module_exit(fm3130_exit);
 MODULE_DESCRIPTION("RTC driver for FM3130");
 MODULE_AUTHOR("Sergey Lapin <slapin@ossfans.org>");
diff --git a/drivers/rtc/rtc-isl12022.c b/drivers/rtc/rtc-isl12022.c
index 6186833973ee..1850104705c0 100644
--- a/drivers/rtc/rtc-isl12022.c
+++ b/drivers/rtc/rtc-isl12022.c
@@ -309,18 +309,7 @@ static struct i2c_driver isl12022_driver = {
        .id_table       = isl12022_id,
 };
-static int __init isl12022_init(void)
+module_i2c_driver(isl12022_driver);
-{
-        return i2c_add_driver(&isl12022_driver);
-}
-static void __exit isl12022_exit(void)
-{
-        i2c_del_driver(&isl12022_driver);
-}
-module_init(isl12022_init);
-module_exit(isl12022_exit);
 MODULE_AUTHOR("roman.fietze@telemotive.de");
 MODULE_DESCRIPTION("ISL 12022 RTC driver");
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index da8beb8cae51..dd2aeee6c66a 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -710,22 +710,9 @@ static struct i2c_driver isl1208_driver = {
        .id_table = isl1208_id,
 };
-static int __init
+module_i2c_driver(isl1208_driver);
-isl1208_init(void)
-{
-        return i2c_add_driver(&isl1208_driver);
-}
-static void __exit
-isl1208_exit(void)
-{
-        i2c_del_driver(&isl1208_driver);
-}
 MODULE_AUTHOR("Herbert Valerio Riedel <hvr@gnu.org>");
 MODULE_DESCRIPTION("Intersil ISL1208 RTC driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
-module_init(isl1208_init);
-module_exit(isl1208_exit);
diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c
index ecc1713b2b4f..63c72189c64b 100644
--- a/drivers/rtc/rtc-lpc32xx.c
+++ b/drivers/rtc/rtc-lpc32xx.c
@@ -287,7 +287,7 @@ static int __devinit lpc32xx_rtc_probe(struct platform_device *pdev)
        if (rtc->irq >= 0) {
                if (devm_request_irq(&pdev->dev, rtc->irq,
                                     lpc32xx_rtc_alarm_interrupt,
-                                     IRQF_DISABLED, pdev->name, rtc) < 0) {
+                                     0, pdev->name, rtc) < 0) {
                        dev_warn(&pdev->dev, "Can't request interrupt.\n");
                        rtc->irq = -1;
                } else {
diff --git a/drivers/rtc/rtc-ls1x.c b/drivers/rtc/rtc-ls1x.c
new file mode 100644
index 000000000000..07e81c5f8247
--- /dev/null
+++ b/drivers/rtc/rtc-ls1x.c
@@ -0,0 +1,210 @@
+/*
+ * Copyright (c) 2011 Zhao Zhang <zhzhl555@gmail.com>
+ *
+ * Derived from driver/rtc/rtc-au1xxx.c
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/rtc.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/io.h>
+#include <asm/mach-loongson1/loongson1.h>
+#define LS1X_RTC_REG_OFFSET     (LS1X_RTC_BASE + 0x20)
+#define LS1X_RTC_REGS(x) \
+                ((void __iomem *)KSEG1ADDR(LS1X_RTC_REG_OFFSET + (x)))
+/*RTC programmable counters 0 and 1*/
+#define SYS_COUNTER_CNTRL               (LS1X_RTC_REGS(0x20))
+#define SYS_CNTRL_ERS                   (1 << 23)
+#define SYS_CNTRL_RTS                   (1 << 20)
+#define SYS_CNTRL_RM2                   (1 << 19)
+#define SYS_CNTRL_RM1                   (1 << 18)
+#define SYS_CNTRL_RM0                   (1 << 17)
+#define SYS_CNTRL_RS                    (1 << 16)
+#define SYS_CNTRL_BP                    (1 << 14)
+#define SYS_CNTRL_REN                   (1 << 13)
+#define SYS_CNTRL_BRT                   (1 << 12)
+#define SYS_CNTRL_TEN                   (1 << 11)
+#define SYS_CNTRL_BTT                   (1 << 10)
+#define SYS_CNTRL_E0                    (1 << 8)
+#define SYS_CNTRL_ETS                   (1 << 7)
+#define SYS_CNTRL_32S                   (1 << 5)
+#define SYS_CNTRL_TTS                   (1 << 4)
+#define SYS_CNTRL_TM2                   (1 << 3)
+#define SYS_CNTRL_TM1                   (1 << 2)
+#define SYS_CNTRL_TM0                   (1 << 1)
+#define SYS_CNTRL_TS                    (1 << 0)
+/* Programmable Counter 0 Registers */
+#define SYS_TOYTRIM             (LS1X_RTC_REGS(0))
+#define SYS_TOYWRITE0           (LS1X_RTC_REGS(4))
+#define SYS_TOYWRITE1           (LS1X_RTC_REGS(8))
+#define SYS_TOYREAD0            (LS1X_RTC_REGS(0xC))
+#define SYS_TOYREAD1            (LS1X_RTC_REGS(0x10))
+#define SYS_TOYMATCH0           (LS1X_RTC_REGS(0x14))
+#define SYS_TOYMATCH1           (LS1X_RTC_REGS(0x18))
+#define SYS_TOYMATCH2           (LS1X_RTC_REGS(0x1C))
+/* Programmable Counter 1 Registers */
+#define SYS_RTCTRIM             (LS1X_RTC_REGS(0x40))
+#define SYS_RTCWRITE0           (LS1X_RTC_REGS(0x44))
+#define SYS_RTCREAD0            (LS1X_RTC_REGS(0x48))
+#define SYS_RTCMATCH0           (LS1X_RTC_REGS(0x4C))
+#define SYS_RTCMATCH1           (LS1X_RTC_REGS(0x50))
+#define SYS_RTCMATCH2           (LS1X_RTC_REGS(0x54))
+#define LS1X_SEC_OFFSET         (4)
+#define LS1X_MIN_OFFSET         (10)
+#define LS1X_HOUR_OFFSET        (16)
+#define LS1X_DAY_OFFSET         (21)
+#define LS1X_MONTH_OFFSET       (26)
+#define LS1X_SEC_MASK           (0x3f)
+#define LS1X_MIN_MASK           (0x3f)
+#define LS1X_HOUR_MASK          (0x1f)
+#define LS1X_DAY_MASK           (0x1f)
+#define LS1X_MONTH_MASK         (0x3f)
+#define LS1X_YEAR_MASK          (0xffffffff)
+#define ls1x_get_sec(t)         (((t) >> LS1X_SEC_OFFSET) & LS1X_SEC_MASK)
+#define ls1x_get_min(t)         (((t) >> LS1X_MIN_OFFSET) & LS1X_MIN_MASK)
+#define ls1x_get_hour(t)        (((t) >> LS1X_HOUR_OFFSET) & LS1X_HOUR_MASK)
+#define ls1x_get_day(t)         (((t) >> LS1X_DAY_OFFSET) & LS1X_DAY_MASK)
+#define ls1x_get_month(t)       (((t) >> LS1X_MONTH_OFFSET) & LS1X_MONTH_MASK)
+#define RTC_CNTR_OK (SYS_CNTRL_E0 | SYS_CNTRL_32S)
+static int ls1x_rtc_read_time(struct device *dev, struct rtc_time *rtm)
+{
+        unsigned long v, t;
+        v = readl(SYS_TOYREAD0);
+        t = readl(SYS_TOYREAD1);
+        memset(rtm, 0, sizeof(struct rtc_time));
+        t  = mktime((t & LS1X_YEAR_MASK), ls1x_get_month(v),
+                        ls1x_get_day(v), ls1x_get_hour(v),
+                        ls1x_get_min(v), ls1x_get_sec(v));
+        rtc_time_to_tm(t, rtm);
+        return rtc_valid_tm(rtm);
+}
+static int ls1x_rtc_set_time(struct device *dev, struct  rtc_time *rtm)
+{
+        unsigned long v, t, c;
+        int ret = -ETIMEDOUT;
+        v = ((rtm->tm_mon + 1)  << LS1X_MONTH_OFFSET)
+                | (rtm->tm_mday << LS1X_DAY_OFFSET)
+                | (rtm->tm_hour << LS1X_HOUR_OFFSET)
+                | (rtm->tm_min  << LS1X_MIN_OFFSET)
+                | (rtm->tm_sec  << LS1X_SEC_OFFSET);
+        writel(v, SYS_TOYWRITE0);
+        c = 0x10000;
+        /* add timeout check counter, for more safe */
+        while ((readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_TS) && --c)
+                usleep_range(1000, 3000);
+        if (!c) {
+                dev_err(dev, "set time timeout!\n");
+                goto err;
+        }
+        t = rtm->tm_year + 1900;
+        writel(t, SYS_TOYWRITE1);
+        c = 0x10000;
+        while ((readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_TS) && --c)
+                usleep_range(1000, 3000);
+        if (!c) {
+                dev_err(dev, "set time timeout!\n");
+                goto err;
+        }
+        return 0;
+err:
+        return ret;
+}
+static struct rtc_class_ops  ls1x_rtc_ops = {
+        .read_time      = ls1x_rtc_read_time,
+        .set_time       = ls1x_rtc_set_time,
+};
+static int __devinit ls1x_rtc_probe(struct platform_device *pdev)
+{
+        struct rtc_device *rtcdev;
+        unsigned long v;
+        int ret;
+        v = readl(SYS_COUNTER_CNTRL);
+        if (!(v & RTC_CNTR_OK)) {
+                dev_err(&pdev->dev, "rtc counters not working\n");
+                ret = -ENODEV;
+                goto err;
+        }
+        ret = -ETIMEDOUT;
+        /* set to 1 HZ if needed */
+        if (readl(SYS_TOYTRIM) != 32767) {
+                v = 0x100000;
+                while ((readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_TTS) && --v)
+                        usleep_range(1000, 3000);
+                if (!v) {
+                        dev_err(&pdev->dev, "time out\n");
+                        goto err;
+                }
+                writel(32767, SYS_TOYTRIM);
+        }
+        /* this loop coundn't be endless */
+        while (readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_TTS)
+                usleep_range(1000, 3000);
+        rtcdev = rtc_device_register("ls1x-rtc", &pdev->dev,
+                                        &ls1x_rtc_ops , THIS_MODULE);
+        if (IS_ERR(rtcdev)) {
+                ret = PTR_ERR(rtcdev);
+                goto err;
+        }
+        platform_set_drvdata(pdev, rtcdev);
+        return 0;
+err:
+        return ret;
+}
+static int __devexit ls1x_rtc_remove(struct platform_device *pdev)
+{
+        struct rtc_device *rtcdev = platform_get_drvdata(pdev);
+        rtc_device_unregister(rtcdev);
+        platform_set_drvdata(pdev, NULL);
+        return 0;
+}
+static struct platform_driver  ls1x_rtc_driver = {
+        .driver         = {
+                .name   = "ls1x-rtc",
+                .owner  = THIS_MODULE,
+        },
+        .remove         = __devexit_p(ls1x_rtc_remove),
+        .probe          = ls1x_rtc_probe,
+};
+module_platform_driver(ls1x_rtc_driver);
+MODULE_AUTHOR("zhao zhang <zhzhl555@gmail.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 64aedd8cc095..4e0f84af99a7 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -900,20 +900,9 @@ static struct i2c_driver m41t80_driver = {
        .id_table = m41t80_id,
 };
-static int __init m41t80_rtc_init(void)
+module_i2c_driver(m41t80_driver);
-{
-        return i2c_add_driver(&m41t80_driver);
-}
-static void __exit m41t80_rtc_exit(void)
-{
-        i2c_del_driver(&m41t80_driver);
-}
 MODULE_AUTHOR("Alexander Bigga <ab@mycable.de>");
 MODULE_DESCRIPTION("ST Microelectronics M41T80 series RTC I2C Client Driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
-module_init(m41t80_rtc_init);
-module_exit(m41t80_rtc_exit);
diff --git a/drivers/rtc/rtc-m41t93.c b/drivers/rtc/rtc-m41t93.c
index ef71132ff205..10f1c29436ec 100644
--- a/drivers/rtc/rtc-m41t93.c
+++ b/drivers/rtc/rtc-m41t93.c
@@ -206,17 +206,7 @@ static struct spi_driver m41t93_driver = {
        .remove = __devexit_p(m41t93_remove),
 };
-static __init int m41t93_init(void)
+module_spi_driver(m41t93_driver);
-{
-        return spi_register_driver(&m41t93_driver);
-}
-module_init(m41t93_init);
-static __exit void m41t93_exit(void)
-{
-        spi_unregister_driver(&m41t93_driver);
-}
-module_exit(m41t93_exit);
 MODULE_AUTHOR("Nikolaus Voss <n.voss@weinmann.de>");
 MODULE_DESCRIPTION("Driver for ST M41T93 SPI RTC");
diff --git a/drivers/rtc/rtc-m41t94.c b/drivers/rtc/rtc-m41t94.c
index 2a4721f61797..6e78193e026b 100644
--- a/drivers/rtc/rtc-m41t94.c
+++ b/drivers/rtc/rtc-m41t94.c
@@ -153,19 +153,7 @@ static struct spi_driver m41t94_driver = {
        .remove = __devexit_p(m41t94_remove),
 };
-static __init int m41t94_init(void)
+module_spi_driver(m41t94_driver);
-{
-        return spi_register_driver(&m41t94_driver);
-}
-module_init(m41t94_init);
-static __exit void m41t94_exit(void)
-{
-        spi_unregister_driver(&m41t94_driver);
-}
-module_exit(m41t94_exit);
 MODULE_AUTHOR("Kim B. Heino <Kim.Heino@bluegiga.com>");
 MODULE_DESCRIPTION("Driver for ST M41T94 SPI RTC");
diff --git a/drivers/rtc/rtc-max6900.c b/drivers/rtc/rtc-max6900.c
index 486142c2637a..a00e33204b91 100644
--- a/drivers/rtc/rtc-max6900.c
+++ b/drivers/rtc/rtc-max6900.c
@@ -261,20 +261,9 @@ static struct i2c_driver max6900_driver = {
        .id_table = max6900_id,
 };
-static int __init max6900_init(void)
+module_i2c_driver(max6900_driver);
-{
-        return i2c_add_driver(&max6900_driver);
-}
-static void __exit max6900_exit(void)
-{
-        i2c_del_driver(&max6900_driver);
-}
 MODULE_DESCRIPTION("Maxim MAX6900 RTC driver");
 MODULE_AUTHOR("Dale Farnsworth <dale@farnsworth.org>");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
-module_init(max6900_init);
-module_exit(max6900_exit);
diff --git a/drivers/rtc/rtc-max6902.c b/drivers/rtc/rtc-max6902.c
index 1f6b3cc58e8a..36c74d22e8b5 100644
--- a/drivers/rtc/rtc-max6902.c
+++ b/drivers/rtc/rtc-max6902.c
@@ -160,17 +160,7 @@ static struct spi_driver max6902_driver = {
        .remove = __devexit_p(max6902_remove),
 };
-static __init int max6902_init(void)
+module_spi_driver(max6902_driver);
-{
-        return spi_register_driver(&max6902_driver);
-}
-module_init(max6902_init);
-static __exit void max6902_exit(void)
-{
-        spi_unregister_driver(&max6902_driver);
-}
-module_exit(max6902_exit);
 MODULE_DESCRIPTION ("max6902 spi RTC driver");
 MODULE_AUTHOR ("Raphael Assenat");
diff --git a/drivers/rtc/rtc-max8925.c b/drivers/rtc/rtc-max8925.c
index 2d71943bc436..1459055a83aa 100644
--- a/drivers/rtc/rtc-max8925.c
+++ b/drivers/rtc/rtc-max8925.c
@@ -193,10 +193,17 @@ static int max8925_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
        ret = max8925_reg_read(info->rtc, MAX8925_RTC_IRQ_MASK);
        if (ret < 0)
                goto out;
-        if ((ret & ALARM0_IRQ) == 0)
+        if (ret & ALARM0_IRQ) {
-                alrm->enabled = 1;
-        else
                alrm->enabled = 0;
+        } else {
+                ret = max8925_reg_read(info->rtc, MAX8925_ALARM0_CNTL);
+                if (ret < 0)
+                        goto out;
+                if (!ret)
+                        alrm->enabled = 0;
+                else
+                        alrm->enabled = 1;
+        }
        ret = max8925_reg_read(info->rtc, MAX8925_RTC_STATUS);
        if (ret < 0)
                goto out;
@@ -204,6 +211,7 @@ static int max8925_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
                alrm->pending = 1;
        else
                alrm->pending = 0;
+        return 0;
 out:
        return ret;
 }
@@ -220,8 +228,11 @@ static int max8925_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
        ret = max8925_bulk_write(info->rtc, MAX8925_ALARM0_SEC, TIME_NUM, buf);
        if (ret < 0)
                goto out;
-        /* only enable alarm on year/month/day/hour/min/sec */
+        if (alrm->enabled)
-        ret = max8925_reg_write(info->rtc, MAX8925_ALARM0_CNTL, 0x77);
+                /* only enable alarm on year/month/day/hour/min/sec */
+                ret = max8925_reg_write(info->rtc, MAX8925_ALARM0_CNTL, 0x77);
+        else
+                ret = max8925_reg_write(info->rtc, MAX8925_ALARM0_CNTL, 0x0);
        if (ret < 0)
                goto out;
 out:
diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c
index 9d3caccfc250..42f5f829b3ee 100644
--- a/drivers/rtc/rtc-mpc5121.c
+++ b/drivers/rtc/rtc-mpc5121.c
@@ -327,7 +327,7 @@ static int __devinit mpc5121_rtc_probe(struct platform_device *op)
        dev_set_drvdata(&op->dev, rtc);
        rtc->irq = irq_of_parse_and_map(op->dev.of_node, 1);
-        err = request_irq(rtc->irq, mpc5121_rtc_handler, IRQF_DISABLED,
+        err = request_irq(rtc->irq, mpc5121_rtc_handler, 0,
                                                "mpc5121-rtc", &op->dev);
        if (err) {
                dev_err(&op->dev, "%s: could not request irq: %i\n",
@@ -337,7 +337,7 @@ static int __devinit mpc5121_rtc_probe(struct platform_device *op)
        rtc->irq_periodic = irq_of_parse_and_map(op->dev.of_node, 0);
        err = request_irq(rtc->irq_periodic, mpc5121_rtc_handler_upd,
-                                IRQF_DISABLED, "mpc5121-rtc_upd", &op->dev);
+                                0, "mpc5121-rtc_upd", &op->dev);
        if (err) {
                dev_err(&op->dev, "%s: could not request irq: %i\n",
                                                __func__, rtc->irq_periodic);
@@ -360,6 +360,8 @@ static int __devinit mpc5121_rtc_probe(struct platform_device *op)
                                                &mpc5200_rtc_ops, THIS_MODULE);
        }
+        rtc->rtc->uie_unsupported = 1;
        if (IS_ERR(rtc->rtc)) {
                err = PTR_ERR(rtc->rtc);
                goto out_free_irq;
diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index 6cd6c7235344..f51719bf4a75 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -366,7 +366,7 @@ vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
        if (rtc_irq) {
                retval = request_irq(rtc_irq, mrst_rtc_irq,
-                                IRQF_DISABLED, dev_name(&mrst_rtc.rtc->dev),
+                                0, dev_name(&mrst_rtc.rtc->dev),
                                mrst_rtc.rtc);
                if (retval < 0) {
                        dev_dbg(dev, "IRQ %d is already in use, err %d\n",
diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c
index 768e2edb9678..b2185f4255aa 100644
--- a/drivers/rtc/rtc-mv.c
+++ b/drivers/rtc/rtc-mv.c
@@ -12,6 +12,7 @@
 #include <linux/bcd.h>
 #include <linux/io.h>
 #include <linux/platform_device.h>
+#include <linux/of.h>
 #include <linux/delay.h>
 #include <linux/gfp.h>
 #include <linux/module.h>
@@ -273,7 +274,7 @@ static int __devinit mv_rtc_probe(struct platform_device *pdev)
        if (pdata->irq >= 0) {
                writel(0, pdata->ioaddr + RTC_ALARM_INTERRUPT_MASK_REG_OFFS);
                if (devm_request_irq(&pdev->dev, pdata->irq, mv_rtc_interrupt,
-                                     IRQF_DISABLED | IRQF_SHARED,
+                                     IRQF_SHARED,
                                     pdev->name, pdata) < 0) {
                        dev_warn(&pdev->dev, "interrupt not available.\n");
                        pdata->irq = -1;
@@ -294,11 +295,19 @@ static int __exit mv_rtc_remove(struct platform_device *pdev)
        return 0;
 }
+#ifdef CONFIG_OF
+static struct of_device_id rtc_mv_of_match_table[] = {
+        { .compatible = "mrvl,orion-rtc", },
+        {}
+};
+#endif
 static struct platform_driver mv_rtc_driver = {
        .remove         = __exit_p(mv_rtc_remove),
        .driver         = {
                .name   = "rtc-mv",
                .owner  = THIS_MODULE,
+                .of_match_table = of_match_ptr(rtc_mv_of_match_table),
        },
 };
diff --git a/drivers/rtc/rtc-nuc900.c b/drivers/rtc/rtc-nuc900.c
index 781068d62f23..b79010987d1e 100644
--- a/drivers/rtc/rtc-nuc900.c
+++ b/drivers/rtc/rtc-nuc900.c
@@ -269,7 +269,7 @@ static int __devinit nuc900_rtc_probe(struct platform_device *pdev)
        nuc900_rtc->irq_num = platform_get_irq(pdev, 0);
        if (request_irq(nuc900_rtc->irq_num, nuc900_rtc_interrupt,
-                                IRQF_DISABLED, "nuc900rtc", nuc900_rtc)) {
+                                0, "nuc900rtc", nuc900_rtc)) {
                dev_err(&pdev->dev, "NUC900 RTC request irq failed\n");
                err = -EBUSY;
                goto fail4;
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 7789002bdd5c..0b614e32653d 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -348,14 +348,14 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
                rtc_write(OMAP_RTC_STATUS_ALARM, OMAP_RTC_STATUS_REG);
        /* handle periodic and alarm irqs */
-        if (request_irq(omap_rtc_timer, rtc_irq, IRQF_DISABLED,
+        if (request_irq(omap_rtc_timer, rtc_irq, 0,
                        dev_name(&rtc->dev), rtc)) {
                pr_debug("%s: RTC timer interrupt IRQ%d already claimed\n",
                        pdev->name, omap_rtc_timer);
                goto fail1;
        }
        if ((omap_rtc_timer != omap_rtc_alarm) &&
-                (request_irq(omap_rtc_alarm, rtc_irq, IRQF_DISABLED,
+                (request_irq(omap_rtc_alarm, rtc_irq, 0,
                        dev_name(&rtc->dev), rtc))) {
                pr_debug("%s: RTC alarm interrupt IRQ%d already claimed\n",
                        pdev->name, omap_rtc_alarm);
diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c
index b46c4004d8fe..836118795c0b 100644
--- a/drivers/rtc/rtc-pcf2123.c
+++ b/drivers/rtc/rtc-pcf2123.c
@@ -346,20 +346,9 @@ static struct spi_driver pcf2123_driver = {
        .remove = __devexit_p(pcf2123_remove),
 };
-static int __init pcf2123_init(void)
+module_spi_driver(pcf2123_driver);
-{
-        return spi_register_driver(&pcf2123_driver);
-}
-static void __exit pcf2123_exit(void)
-{
-        spi_unregister_driver(&pcf2123_driver);
-}
 MODULE_AUTHOR("Chris Verges <chrisv@cyberswitching.com>");
 MODULE_DESCRIPTION("NXP PCF2123 RTC driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
-module_init(pcf2123_init);
-module_exit(pcf2123_exit);
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 606fdfab34e2..bc0677de1996 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -252,20 +252,9 @@ static struct i2c_driver pcf8563_driver = {
        .id_table       = pcf8563_id,
 };
-static int __init pcf8563_init(void)
+module_i2c_driver(pcf8563_driver);
-{
-        return i2c_add_driver(&pcf8563_driver);
-}
-static void __exit pcf8563_exit(void)
-{
-        i2c_del_driver(&pcf8563_driver);
-}
 MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
 MODULE_DESCRIPTION("Philips PCF8563/Epson RTC8564 RTC driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
-module_init(pcf8563_init);
-module_exit(pcf8563_exit);
diff --git a/drivers/rtc/rtc-pcf8583.c b/drivers/rtc/rtc-pcf8583.c
index 2d201afead3b..019ff3571168 100644
--- a/drivers/rtc/rtc-pcf8583.c
+++ b/drivers/rtc/rtc-pcf8583.c
@@ -320,18 +320,7 @@ static struct i2c_driver pcf8583_driver = {
        .id_table       = pcf8583_id,
 };
-static __init int pcf8583_init(void)
+module_i2c_driver(pcf8583_driver);
-{
-        return i2c_add_driver(&pcf8583_driver);
-}
-static __exit void pcf8583_exit(void)
-{
-        i2c_del_driver(&pcf8583_driver);
-}
-module_init(pcf8583_init);
-module_exit(pcf8583_exit);
 MODULE_AUTHOR("Russell King");
 MODULE_DESCRIPTION("PCF8583 I2C RTC driver");
diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
index 02111fee077e..22bacdbf9139 100644
--- a/drivers/rtc/rtc-pl030.c
+++ b/drivers/rtc/rtc-pl030.c
@@ -123,7 +123,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id)
        amba_set_drvdata(dev, rtc);
-        ret = request_irq(dev->irq[0], pl030_interrupt, IRQF_DISABLED,
+        ret = request_irq(dev->irq[0], pl030_interrupt, 0,
                          "rtc-pl030", rtc);
        if (ret)
                goto err_irq;
@@ -185,18 +185,7 @@ static struct amba_driver pl030_driver = {
        .id_table       = pl030_ids,
 };
-static int __init pl030_init(void)
+module_amba_driver(pl030_driver);
-{
-        return amba_driver_register(&pl030_driver);
-}
-static void __exit pl030_exit(void)
-{
-        amba_driver_unregister(&pl030_driver);
-}
-module_init(pl030_init);
-module_exit(pl030_exit);
 MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
 MODULE_DESCRIPTION("ARM AMBA PL030 RTC Driver");
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index a952c8de1dd7..684ef4bbfce4 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -339,8 +339,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
        dev_dbg(&adev->dev, "revision = 0x%01x\n", ldata->hw_revision);
        /* Enable the clockwatch on ST Variants */
-        if ((ldata->hw_designer == AMBA_VENDOR_ST) &&
+        if (ldata->hw_designer == AMBA_VENDOR_ST)
-            (ldata->hw_revision > 1))
                writel(readl(ldata->base + RTC_CR) | RTC_CR_CWEN,
                       ldata->base + RTC_CR);
@@ -352,7 +351,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
        }
        if (request_irq(adev->irq[0], pl031_interrupt,
-                        IRQF_DISABLED, "rtc-pl031", ldata)) {
+                        0, "rtc-pl031", ldata)) {
                ret = -EIO;
                goto out_no_irq;
        }
@@ -431,18 +430,7 @@ static struct amba_driver pl031_driver = {
        .remove = pl031_remove,
 };
-static int __init pl031_init(void)
+module_amba_driver(pl031_driver);
-{
-        return amba_driver_register(&pl031_driver);
-}
-static void __exit pl031_exit(void)
-{
-        amba_driver_unregister(&pl031_driver);
-}
-module_init(pl031_init);
-module_exit(pl031_exit);
 MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net");
 MODULE_DESCRIPTION("ARM AMBA PL031 RTC Driver");
diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
index 9f1d6bcbdf6c..d00bd24342a3 100644
--- a/drivers/rtc/rtc-pm8xxx.c
+++ b/drivers/rtc/rtc-pm8xxx.c
@@ -520,7 +520,7 @@ static int pm8xxx_rtc_suspend(struct device *dev)
 }
 #endif
-SIMPLE_DEV_PM_OPS(pm8xxx_rtc_pm_ops, pm8xxx_rtc_suspend, pm8xxx_rtc_resume);
+static SIMPLE_DEV_PM_OPS(pm8xxx_rtc_pm_ops, pm8xxx_rtc_suspend, pm8xxx_rtc_resume);
 static struct platform_driver pm8xxx_rtc_driver = {
        .probe          = pm8xxx_rtc_probe,
diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c
index fc9f4991574b..0075c8fd93d8 100644
--- a/drivers/rtc/rtc-pxa.c
+++ b/drivers/rtc/rtc-pxa.c
@@ -174,14 +174,14 @@ static int pxa_rtc_open(struct device *dev)
        struct pxa_rtc *pxa_rtc = dev_get_drvdata(dev);
        int ret;
-        ret = request_irq(pxa_rtc->irq_1Hz, pxa_rtc_irq, IRQF_DISABLED,
+        ret = request_irq(pxa_rtc->irq_1Hz, pxa_rtc_irq, 0,
                          "rtc 1Hz", dev);
        if (ret < 0) {
                dev_err(dev, "can't get irq %i, err %d\n", pxa_rtc->irq_1Hz,
                        ret);
                goto err_irq_1Hz;
        }
-        ret = request_irq(pxa_rtc->irq_Alrm, pxa_rtc_irq, IRQF_DISABLED,
+        ret = request_irq(pxa_rtc->irq_Alrm, pxa_rtc_irq, 0,
                          "rtc Alrm", dev);
        if (ret < 0) {
                dev_err(dev, "can't get irq %i, err %d\n", pxa_rtc->irq_Alrm,
diff --git a/drivers/rtc/rtc-r9701.c b/drivers/rtc/rtc-r9701.c
index 9beba49c3c5b..33b6ba0afa0d 100644
--- a/drivers/rtc/rtc-r9701.c
+++ b/drivers/rtc/rtc-r9701.c
@@ -122,9 +122,38 @@ static const struct rtc_class_ops r9701_rtc_ops = {
 static int __devinit r9701_probe(struct spi_device *spi)
 {
        struct rtc_device *rtc;
+        struct rtc_time dt;
        unsigned char tmp;
        int res;
+        tmp = R100CNT;
+        res = read_regs(&spi->dev, &tmp, 1);
+        if (res || tmp != 0x20) {
+                dev_err(&spi->dev, "cannot read RTC register\n");
+                return -ENODEV;
+        }
+        /*
+         * The device seems to be present. Now check if the registers
+         * contain invalid values. If so, try to write a default date:
+         * 2000/1/1 00:00:00
+         */
+        r9701_get_datetime(&spi->dev, &dt);
+        if (rtc_valid_tm(&dt)) {
+                dev_info(&spi->dev, "trying to repair invalid date/time\n");
+                dt.tm_sec  = 0;
+                dt.tm_min  = 0;
+                dt.tm_hour = 0;
+                dt.tm_mday = 1;
+                dt.tm_mon  = 0;
+                dt.tm_year = 100;
+                if (r9701_set_datetime(&spi->dev, &dt)) {
+                        dev_err(&spi->dev, "cannot repair RTC register\n");
+                        return -ENODEV;
+                }
+        }
        rtc = rtc_device_register("r9701",
                                &spi->dev, &r9701_rtc_ops, THIS_MODULE);
        if (IS_ERR(rtc))
@@ -132,13 +161,6 @@ static int __devinit r9701_probe(struct spi_device *spi)
        dev_set_drvdata(&spi->dev, rtc);
-        tmp = R100CNT;
-        res = read_regs(&spi->dev, &tmp, 1);
-        if (res || tmp != 0x20) {
-                rtc_device_unregister(rtc);
-                return res;
-        }
        return 0;
 }
@@ -159,17 +181,7 @@ static struct spi_driver r9701_driver = {
        .remove = __devexit_p(r9701_remove),
 };
-static __init int r9701_init(void)
+module_spi_driver(r9701_driver);
-{
-        return spi_register_driver(&r9701_driver);
-}
-module_init(r9701_init);
-static __exit void r9701_exit(void)
-{
-        spi_unregister_driver(&r9701_driver);
-}
-module_exit(r9701_exit);
 MODULE_DESCRIPTION("r9701 spi RTC driver");
 MODULE_AUTHOR("Magnus Damm <damm@opensource.se>");
diff --git a/drivers/rtc/rtc-rs5c348.c b/drivers/rtc/rtc-rs5c348.c
index ce2ca8523ddd..77074ccd2850 100644
--- a/drivers/rtc/rtc-rs5c348.c
+++ b/drivers/rtc/rtc-rs5c348.c
@@ -235,18 +235,7 @@ static struct spi_driver rs5c348_driver = {
        .remove = __devexit_p(rs5c348_remove),
 };
-static __init int rs5c348_init(void)
+module_spi_driver(rs5c348_driver);
-{
-        return spi_register_driver(&rs5c348_driver);
-}
-static __exit void rs5c348_exit(void)
-{
-        spi_unregister_driver(&rs5c348_driver);
-}
-module_init(rs5c348_init);
-module_exit(rs5c348_exit);
 MODULE_AUTHOR("Atsushi Nemoto <anemo@mba.ocn.ne.jp>");
 MODULE_DESCRIPTION("Ricoh RS5C348 RTC driver");
diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c
index d29f5432c6e8..fb4842c3544e 100644
--- a/drivers/rtc/rtc-rs5c372.c
+++ b/drivers/rtc/rtc-rs5c372.c
@@ -689,18 +689,7 @@ static struct i2c_driver rs5c372_driver = {
        .id_table       = rs5c372_id,
 };
-static __init int rs5c372_init(void)
+module_i2c_driver(rs5c372_driver);
-{
-        return i2c_add_driver(&rs5c372_driver);
-}
-static __exit void rs5c372_exit(void)
-{
-        i2c_del_driver(&rs5c372_driver);
-}
-module_init(rs5c372_init);
-module_exit(rs5c372_exit);
 MODULE_AUTHOR(
                "Pavel Mironchik <pmironchik@optifacio.net>, "
diff --git a/drivers/rtc/rtc-rv3029c2.c b/drivers/rtc/rtc-rv3029c2.c
index ea09ff211dc6..0fbe57b2f6d2 100644
--- a/drivers/rtc/rtc-rv3029c2.c
+++ b/drivers/rtc/rtc-rv3029c2.c
@@ -436,18 +436,7 @@ static struct i2c_driver rv3029c2_driver = {
        .id_table = rv3029c2_id,
 };
-static int __init rv3029c2_init(void)
+module_i2c_driver(rv3029c2_driver);
-{
-        return i2c_add_driver(&rv3029c2_driver);
-}
-static void __exit rv3029c2_exit(void)
-{
-        i2c_del_driver(&rv3029c2_driver);
-}
-module_init(rv3029c2_init);
-module_exit(rv3029c2_exit);
 MODULE_AUTHOR("Gregory Hermant <gregory.hermant@calao-systems.com>");
 MODULE_DESCRIPTION("Micro Crystal RV3029C2 RTC driver");
diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c
index fde172fb2abe..0de902dc1cd5 100644
--- a/drivers/rtc/rtc-rx8025.c
+++ b/drivers/rtc/rtc-rx8025.c
@@ -644,19 +644,8 @@ static struct i2c_driver rx8025_driver = {
        .id_table       = rx8025_id,
 };
-static int __init rx8025_init(void)
+module_i2c_driver(rx8025_driver);
-{
-        return i2c_add_driver(&rx8025_driver);
-}
-static void __exit rx8025_exit(void)
-{
-        i2c_del_driver(&rx8025_driver);
-}
 MODULE_AUTHOR("Wolfgang Grandegger <wg@grandegger.com>");
 MODULE_DESCRIPTION("RX-8025 SA/NB RTC driver");
 MODULE_LICENSE("GPL");
-module_init(rx8025_init);
-module_exit(rx8025_exit);
diff --git a/drivers/rtc/rtc-rx8581.c b/drivers/rtc/rtc-rx8581.c
index 600b890a3c15..d84825124a7a 100644
--- a/drivers/rtc/rtc-rx8581.c
+++ b/drivers/rtc/rtc-rx8581.c
@@ -276,20 +276,9 @@ static struct i2c_driver rx8581_driver = {
        .id_table       = rx8581_id,
 };
-static int __init rx8581_init(void)
+module_i2c_driver(rx8581_driver);
-{
-        return i2c_add_driver(&rx8581_driver);
-}
-static void __exit rx8581_exit(void)
-{
-        i2c_del_driver(&rx8581_driver);
-}
 MODULE_AUTHOR("Martyn Welch <martyn.welch@ge.com>");
 MODULE_DESCRIPTION("Epson RX-8581 RTC driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
-module_init(rx8581_init);
-module_exit(rx8581_exit);
diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c
index f789e002c9b0..c9562ceedef3 100644
--- a/drivers/rtc/rtc-s35390a.c
+++ b/drivers/rtc/rtc-s35390a.c
@@ -304,19 +304,8 @@ static struct i2c_driver s35390a_driver = {
        .id_table       = s35390a_id,
 };
-static int __init s35390a_rtc_init(void)
+module_i2c_driver(s35390a_driver);
-{
-        return i2c_add_driver(&s35390a_driver);
-}
-static void __exit s35390a_rtc_exit(void)
-{
-        i2c_del_driver(&s35390a_driver);
-}
 MODULE_AUTHOR("Byron Bradley <byron.bbradley@gmail.com>");
 MODULE_DESCRIPTION("S35390A RTC driver");
 MODULE_LICENSE("GPL");
-module_init(s35390a_rtc_init);
-module_exit(s35390a_rtc_exit);
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index aef40bd2957b..3f3a29752369 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -35,9 +35,15 @@
 enum s3c_cpu_type {
        TYPE_S3C2410,
+        TYPE_S3C2416,
+        TYPE_S3C2443,
        TYPE_S3C64XX,
 };
+struct s3c_rtc_drv_data {
+        int cpu_type;
+};
 /* I have yet to find an S3C implementation with more than one
 * of these rtc blocks in */
@@ -132,6 +138,7 @@ static int s3c_rtc_setfreq(struct device *dev, int freq)
        struct platform_device *pdev = to_platform_device(dev);
        struct rtc_device *rtc_dev = platform_get_drvdata(pdev);
        unsigned int tmp = 0;
+        int val;
        if (!is_power_of_2(freq))
                return -EINVAL;
@@ -139,12 +146,22 @@ static int s3c_rtc_setfreq(struct device *dev, int freq)
        clk_enable(rtc_clk);
        spin_lock_irq(&s3c_rtc_pie_lock);
-        if (s3c_rtc_cpu_type == TYPE_S3C2410) {
+        if (s3c_rtc_cpu_type != TYPE_S3C64XX) {
                tmp = readb(s3c_rtc_base + S3C2410_TICNT);
                tmp &= S3C2410_TICNT_ENABLE;
        }
-        tmp |= (rtc_dev->max_user_freq / freq)-1;
+        val = (rtc_dev->max_user_freq / freq) - 1;
+        if (s3c_rtc_cpu_type == TYPE_S3C2416 || s3c_rtc_cpu_type == TYPE_S3C2443) {
+                tmp |= S3C2443_TICNT_PART(val);
+                writel(S3C2443_TICNT1_PART(val), s3c_rtc_base + S3C2443_TICNT1);
+                if (s3c_rtc_cpu_type == TYPE_S3C2416)
+                        writel(S3C2416_TICNT2_PART(val), s3c_rtc_base + S3C2416_TICNT2);
+        } else {
+                tmp |= val;
+        }
        writel(tmp, s3c_rtc_base + S3C2410_TICNT);
        spin_unlock_irq(&s3c_rtc_pie_lock);
@@ -371,7 +388,7 @@ static void s3c_rtc_enable(struct platform_device *pdev, int en)
                tmp &= ~S3C2410_RTCCON_RTCEN;
                writew(tmp, base + S3C2410_RTCCON);
-                if (s3c_rtc_cpu_type == TYPE_S3C2410) {
+                if (s3c_rtc_cpu_type != TYPE_S3C64XX) {
                        tmp = readb(base + S3C2410_TICNT);
                        tmp &= ~S3C2410_TICNT_ENABLE;
                        writeb(tmp, base + S3C2410_TICNT);
@@ -428,12 +445,29 @@ static int __devexit s3c_rtc_remove(struct platform_device *dev)
        return 0;
 }
+static const struct of_device_id s3c_rtc_dt_match[];
+static inline int s3c_rtc_get_driver_data(struct platform_device *pdev)
+{
+#ifdef CONFIG_OF
+        struct s3c_rtc_drv_data *data;
+        if (pdev->dev.of_node) {
+                const struct of_device_id *match;
+                match = of_match_node(s3c_rtc_dt_match, pdev->dev.of_node);
+                data = (struct s3c_rtc_drv_data *) match->data;
+                return data->cpu_type;
+        }
+#endif
+        return platform_get_device_id(pdev)->driver_data;
+}
 static int __devinit s3c_rtc_probe(struct platform_device *pdev)
 {
        struct rtc_device *rtc;
        struct rtc_time rtc_tm;
        struct resource *res;
        int ret;
+        int tmp;
        pr_debug("%s: probe=%p\n", __func__, pdev);
@@ -508,13 +542,7 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
                goto err_nortc;
        }
-#ifdef CONFIG_OF
+        s3c_rtc_cpu_type = s3c_rtc_get_driver_data(pdev);
-        if (pdev->dev.of_node)
-                s3c_rtc_cpu_type = of_device_is_compatible(pdev->dev.of_node,
-                        "samsung,s3c6410-rtc") ? TYPE_S3C64XX : TYPE_S3C2410;
-        else
-#endif
-                s3c_rtc_cpu_type = platform_get_device_id(pdev)->driver_data;
        /* Check RTC Time */
@@ -533,24 +561,30 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
                dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
        }
-        if (s3c_rtc_cpu_type == TYPE_S3C64XX)
+        if (s3c_rtc_cpu_type != TYPE_S3C2410)
                rtc->max_user_freq = 32768;
        else
                rtc->max_user_freq = 128;
+        if (s3c_rtc_cpu_type == TYPE_S3C2416 || s3c_rtc_cpu_type == TYPE_S3C2443) {
+                tmp = readw(s3c_rtc_base + S3C2410_RTCCON);
+                tmp |= S3C2443_RTCCON_TICSEL;
+                writew(tmp, s3c_rtc_base + S3C2410_RTCCON);
+        }
        platform_set_drvdata(pdev, rtc);
        s3c_rtc_setfreq(&pdev->dev, 1);
        ret = request_irq(s3c_rtc_alarmno, s3c_rtc_alarmirq,
-                          IRQF_DISABLED,  "s3c2410-rtc alarm", rtc);
+                          0,  "s3c2410-rtc alarm", rtc);
        if (ret) {
                dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_alarmno, ret);
                goto err_alarm_irq;
        }
        ret = request_irq(s3c_rtc_tickno, s3c_rtc_tickirq,
-                          IRQF_DISABLED,  "s3c2410-rtc tick", rtc);
+                          0,  "s3c2410-rtc tick", rtc);
        if (ret) {
                dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_tickno, ret);
                free_irq(s3c_rtc_alarmno, rtc);
@@ -636,10 +670,28 @@ static int s3c_rtc_resume(struct platform_device *pdev)
 #define s3c_rtc_resume  NULL
 #endif
+static struct s3c_rtc_drv_data s3c_rtc_drv_data_array[] = {
+        [TYPE_S3C2410] = { TYPE_S3C2410 },
+        [TYPE_S3C2416] = { TYPE_S3C2416 },
+        [TYPE_S3C2443] = { TYPE_S3C2443 },
+        [TYPE_S3C64XX] = { TYPE_S3C64XX },
+};
 #ifdef CONFIG_OF
 static const struct of_device_id s3c_rtc_dt_match[] = {
-        { .compatible = "samsung,s3c2410-rtc" },
+        {
-        { .compatible = "samsung,s3c6410-rtc" },
+                .compatible = "samsung,s3c2410-rtc",
+                .data = &s3c_rtc_drv_data_array[TYPE_S3C2410],
+        }, {
+                .compatible = "samsung,s3c2416-rtc",
+                .data = &s3c_rtc_drv_data_array[TYPE_S3C2416],
+        }, {
+                .compatible = "samsung,s3c2443-rtc",
+                .data = &s3c_rtc_drv_data_array[TYPE_S3C2443],
+        }, {
+                .compatible = "samsung,s3c6410-rtc",
+                .data = &s3c_rtc_drv_data_array[TYPE_S3C64XX],
+        },
        {},
 };
 MODULE_DEVICE_TABLE(of, s3c_rtc_dt_match);
@@ -652,6 +704,12 @@ static struct platform_device_id s3c_rtc_driver_ids[] = {
                .name           = "s3c2410-rtc",
                .driver_data    = TYPE_S3C2410,
        }, {
+                .name           = "s3c2416-rtc",
+                .driver_data    = TYPE_S3C2416,
+        }, {
+                .name           = "s3c2443-rtc",
+                .driver_data    = TYPE_S3C2443,
+        }, {
                .name           = "s3c64xx-rtc",
                .driver_data    = TYPE_S3C64XX,
        },
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index cb9a585312cc..50a5c4adee48 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -23,94 +23,45 @@
 #include <linux/platform_device.h>
 #include <linux/module.h>
+#include <linux/clk.h>
 #include <linux/rtc.h>
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/interrupt.h>
+#include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/of.h>
 #include <linux/pm.h>
 #include <linux/bitops.h>
+#include <linux/io.h>
 #include <mach/hardware.h>
-#include <asm/irq.h>
+#include <mach/irqs.h>
-#ifdef CONFIG_ARCH_PXA
+#if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
 #include <mach/regs-rtc.h>
 #endif
 #define RTC_DEF_DIVIDER         (32768 - 1)
 #define RTC_DEF_TRIM            0
+#define RTC_FREQ                1024
-static const unsigned long RTC_FREQ = 1024;
-static struct rtc_time rtc_alarm;
+struct sa1100_rtc {
-static DEFINE_SPINLOCK(sa1100_rtc_lock);
+        spinlock_t              lock;
+        int                     irq_1hz;
-static inline int rtc_periodic_alarm(struct rtc_time *tm)
+        int                     irq_alarm;
-{
+        struct rtc_device       *rtc;
-        return  (tm->tm_year == -1) ||
+        struct clk              *clk;
-                ((unsigned)tm->tm_mon >= 12) ||
+};
-                ((unsigned)(tm->tm_mday - 1) >= 31) ||
-                ((unsigned)tm->tm_hour > 23) ||
-                ((unsigned)tm->tm_min > 59) ||
-                ((unsigned)tm->tm_sec > 59);
-}
-/*
- * Calculate the next alarm time given the requested alarm time mask
- * and the current time.
- */
-static void rtc_next_alarm_time(struct rtc_time *next, struct rtc_time *now,
-        struct rtc_time *alrm)
-{
-        unsigned long next_time;
-        unsigned long now_time;
-        next->tm_year = now->tm_year;
-        next->tm_mon = now->tm_mon;
-        next->tm_mday = now->tm_mday;
-        next->tm_hour = alrm->tm_hour;
-        next->tm_min = alrm->tm_min;
-        next->tm_sec = alrm->tm_sec;
-        rtc_tm_to_time(now, &now_time);
-        rtc_tm_to_time(next, &next_time);
-        if (next_time < now_time) {
-                /* Advance one day */
-                next_time += 60 * 60 * 24;
-                rtc_time_to_tm(next_time, next);
-        }
-}
-static int rtc_update_alarm(struct rtc_time *alrm)
-{
-        struct rtc_time alarm_tm, now_tm;
-        unsigned long now, time;
-        int ret;
-        do {
-                now = RCNR;
-                rtc_time_to_tm(now, &now_tm);
-                rtc_next_alarm_time(&alarm_tm, &now_tm, alrm);
-                ret = rtc_tm_to_time(&alarm_tm, &time);
-                if (ret != 0)
-                        break;
-                RTSR = RTSR & (RTSR_HZE|RTSR_ALE|RTSR_AL);
-                RTAR = time;
-        } while (now != RCNR);
-        return ret;
-}
 static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
 {
-        struct platform_device *pdev = to_platform_device(dev_id);
+        struct sa1100_rtc *info = dev_get_drvdata(dev_id);
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
+        struct rtc_device *rtc = info->rtc;
        unsigned int rtsr;
        unsigned long events = 0;
-        spin_lock(&sa1100_rtc_lock);
+        spin_lock(&info->lock);
        rtsr = RTSR;
        /* clear interrupt sources */
@@ -146,30 +97,28 @@ static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
        rtc_update_irq(rtc, 1, events);
-        if (rtsr & RTSR_AL && rtc_periodic_alarm(&rtc_alarm))
+        spin_unlock(&info->lock);
-                rtc_update_alarm(&rtc_alarm);
-        spin_unlock(&sa1100_rtc_lock);
        return IRQ_HANDLED;
 }
 static int sa1100_rtc_open(struct device *dev)
 {
+        struct sa1100_rtc *info = dev_get_drvdata(dev);
+        struct rtc_device *rtc = info->rtc;
        int ret;
-        struct platform_device *plat_dev = to_platform_device(dev);
-        struct rtc_device *rtc = platform_get_drvdata(plat_dev);
-        ret = request_irq(IRQ_RTC1Hz, sa1100_rtc_interrupt, IRQF_DISABLED,
+        ret = clk_prepare_enable(info->clk);
-                "rtc 1Hz", dev);
+        if (ret)
+                goto fail_clk;
+        ret = request_irq(info->irq_1hz, sa1100_rtc_interrupt, 0, "rtc 1Hz", dev);
        if (ret) {
-                dev_err(dev, "IRQ %d already in use.\n", IRQ_RTC1Hz);
+                dev_err(dev, "IRQ %d already in use.\n", info->irq_1hz);
                goto fail_ui;
        }
-        ret = request_irq(IRQ_RTCAlrm, sa1100_rtc_interrupt, IRQF_DISABLED,
+        ret = request_irq(info->irq_alarm, sa1100_rtc_interrupt, 0, "rtc Alrm", dev);
-                "rtc Alrm", dev);
        if (ret) {
-                dev_err(dev, "IRQ %d already in use.\n", IRQ_RTCAlrm);
+                dev_err(dev, "IRQ %d already in use.\n", info->irq_alarm);
                goto fail_ai;
        }
        rtc->max_user_freq = RTC_FREQ;
@@ -178,29 +127,36 @@ static int sa1100_rtc_open(struct device *dev)
        return 0;
 fail_ai:
-        free_irq(IRQ_RTC1Hz, dev);
+        free_irq(info->irq_1hz, dev);
 fail_ui:
+        clk_disable_unprepare(info->clk);
+ fail_clk:
        return ret;
 }
 static void sa1100_rtc_release(struct device *dev)
 {
-        spin_lock_irq(&sa1100_rtc_lock);
+        struct sa1100_rtc *info = dev_get_drvdata(dev);
+        spin_lock_irq(&info->lock);
        RTSR = 0;
-        spin_unlock_irq(&sa1100_rtc_lock);
+        spin_unlock_irq(&info->lock);
-        free_irq(IRQ_RTCAlrm, dev);
+        free_irq(info->irq_alarm, dev);
-        free_irq(IRQ_RTC1Hz, dev);
+        free_irq(info->irq_1hz, dev);
+        clk_disable_unprepare(info->clk);
 }
 static int sa1100_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
 {
-        spin_lock_irq(&sa1100_rtc_lock);
+        struct sa1100_rtc *info = dev_get_drvdata(dev);
+        spin_lock_irq(&info->lock);
        if (enabled)
                RTSR |= RTSR_ALE;
        else
                RTSR &= ~RTSR_ALE;
-        spin_unlock_irq(&sa1100_rtc_lock);
+        spin_unlock_irq(&info->lock);
        return 0;
 }
@@ -225,7 +181,6 @@ static int sa1100_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
        u32     rtsr;
-        memcpy(&alrm->time, &rtc_alarm, sizeof(struct rtc_time));
        rtsr = RTSR;
        alrm->enabled = (rtsr & RTSR_ALE) ? 1 : 0;
        alrm->pending = (rtsr & RTSR_AL) ? 1 : 0;
@@ -234,17 +189,22 @@ static int sa1100_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
+        struct sa1100_rtc *info = dev_get_drvdata(dev);
+        unsigned long time;
        int ret;
-        spin_lock_irq(&sa1100_rtc_lock);
+        spin_lock_irq(&info->lock);
-        ret = rtc_update_alarm(&alrm->time);
+        ret = rtc_tm_to_time(&alrm->time, &time);
-        if (ret == 0) {
+        if (ret != 0)
-                if (alrm->enabled)
+                goto out;
-                        RTSR |= RTSR_ALE;
+        RTSR = RTSR & (RTSR_HZE|RTSR_ALE|RTSR_AL);
-                else
+        RTAR = time;
-                        RTSR &= ~RTSR_ALE;
+        if (alrm->enabled)
-        }
+                RTSR |= RTSR_ALE;
-        spin_unlock_irq(&sa1100_rtc_lock);
+        else
+                RTSR &= ~RTSR_ALE;
+out:
+        spin_unlock_irq(&info->lock);
        return ret;
 }
@@ -271,6 +231,27 @@ static const struct rtc_class_ops sa1100_rtc_ops = {
 static int sa1100_rtc_probe(struct platform_device *pdev)
 {
        struct rtc_device *rtc;
+        struct sa1100_rtc *info;
+        int irq_1hz, irq_alarm, ret = 0;
+        irq_1hz = platform_get_irq_byname(pdev, "rtc 1Hz");
+        irq_alarm = platform_get_irq_byname(pdev, "rtc alarm");
+        if (irq_1hz < 0 || irq_alarm < 0)
+                return -ENODEV;
+        info = kzalloc(sizeof(struct sa1100_rtc), GFP_KERNEL);
+        if (!info)
+                return -ENOMEM;
+        info->clk = clk_get(&pdev->dev, NULL);
+        if (IS_ERR(info->clk)) {
+                dev_err(&pdev->dev, "failed to find rtc clock source\n");
+                ret = PTR_ERR(info->clk);
+                goto err_clk;
+        }
+        info->irq_1hz = irq_1hz;
+        info->irq_alarm = irq_alarm;
+        spin_lock_init(&info->lock);
+        platform_set_drvdata(pdev, info);
        /*
         * According to the manual we should be able to let RTTR be zero
@@ -292,10 +273,11 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
        rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops,
                THIS_MODULE);
-        if (IS_ERR(rtc))
+        if (IS_ERR(rtc)) {
-                return PTR_ERR(rtc);
+                ret = PTR_ERR(rtc);
+                goto err_dev;
-        platform_set_drvdata(pdev, rtc);
+        }
+        info->rtc = rtc;
        /* Fix for a nasty initialization problem the in SA11xx RTSR register.
         * See also the comments in sa1100_rtc_interrupt().
@@ -322,14 +304,24 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
        RTSR = RTSR_AL | RTSR_HZ;
        return 0;
+err_dev:
+        platform_set_drvdata(pdev, NULL);
+        clk_put(info->clk);
+err_clk:
+        kfree(info);
+        return ret;
 }
 static int sa1100_rtc_remove(struct platform_device *pdev)
 {
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
+        struct sa1100_rtc *info = platform_get_drvdata(pdev);
-        if (rtc)
+        if (info) {
-                rtc_device_unregister(rtc);
+                rtc_device_unregister(info->rtc);
+                clk_put(info->clk);
+                platform_set_drvdata(pdev, NULL);
+                kfree(info);
+        }
        return 0;
 }
@@ -337,15 +329,17 @@ static int sa1100_rtc_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM
 static int sa1100_rtc_suspend(struct device *dev)
 {
+        struct sa1100_rtc *info = dev_get_drvdata(dev);
        if (device_may_wakeup(dev))
-                enable_irq_wake(IRQ_RTCAlrm);
+                enable_irq_wake(info->irq_alarm);
        return 0;
 }
 static int sa1100_rtc_resume(struct device *dev)
 {
+        struct sa1100_rtc *info = dev_get_drvdata(dev);
        if (device_may_wakeup(dev))
-                disable_irq_wake(IRQ_RTCAlrm);
+                disable_irq_wake(info->irq_alarm);
        return 0;
 }
@@ -355,6 +349,13 @@ static const struct dev_pm_ops sa1100_rtc_pm_ops = {
 };
 #endif
+static struct of_device_id sa1100_rtc_dt_ids[] = {
+        { .compatible = "mrvl,sa1100-rtc", },
+        { .compatible = "mrvl,mmp-rtc", },
+        {}
+};
+MODULE_DEVICE_TABLE(of, sa1100_rtc_dt_ids);
 static struct platform_driver sa1100_rtc_driver = {
        .probe          = sa1100_rtc_probe,
        .remove         = sa1100_rtc_remove,
@@ -363,6 +364,7 @@ static struct platform_driver sa1100_rtc_driver = {
 #ifdef CONFIG_PM
                .pm     = &sa1100_rtc_pm_ops,
 #endif
+                .of_match_table = sa1100_rtc_dt_ids,
        },
 };
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index 6ac55fd48413..e55a7635ae5f 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -666,7 +666,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
        if (rtc->carry_irq <= 0) {
                /* register shared periodic/carry/alarm irq */
                ret = request_irq(rtc->periodic_irq, sh_rtc_shared,
-                                  IRQF_DISABLED, "sh-rtc", rtc);
+                                  0, "sh-rtc", rtc);
                if (unlikely(ret)) {
                        dev_err(&pdev->dev,
                                "request IRQ failed with %d, IRQ %d\n", ret,
@@ -676,7 +676,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
        } else {
                /* register periodic/carry/alarm irqs */
                ret = request_irq(rtc->periodic_irq, sh_rtc_periodic,
-                                  IRQF_DISABLED, "sh-rtc period", rtc);
+                                  0, "sh-rtc period", rtc);
                if (unlikely(ret)) {
                        dev_err(&pdev->dev,
                                "request period IRQ failed with %d, IRQ %d\n",
@@ -685,7 +685,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
                }
                ret = request_irq(rtc->carry_irq, sh_rtc_interrupt,
-                                  IRQF_DISABLED, "sh-rtc carry", rtc);
+                                  0, "sh-rtc carry", rtc);
                if (unlikely(ret)) {
                        dev_err(&pdev->dev,
                                "request carry IRQ failed with %d, IRQ %d\n",
@@ -695,7 +695,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
                }
                ret = request_irq(rtc->alarm_irq, sh_rtc_alarm,
-                                  IRQF_DISABLED, "sh-rtc alarm", rtc);
+                                  0, "sh-rtc alarm", rtc);
                if (unlikely(ret)) {
                        dev_err(&pdev->dev,
                                "request alarm IRQ failed with %d, IRQ %d\n",
diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c
index 19a28a671a8e..e38da0dc4187 100644
--- a/drivers/rtc/rtc-spear.c
+++ b/drivers/rtc/rtc-spear.c
@@ -77,9 +77,11 @@
 #define STATUS_FAIL             (LOST_WR_TIME | LOST_WR_DATE)
 struct spear_rtc_config {
+        struct rtc_device *rtc;
        struct clk *clk;
        spinlock_t lock;
        void __iomem *ioaddr;
+        unsigned int irq_wake;
 };
 static inline void spear_rtc_clear_interrupt(struct spear_rtc_config *config)
@@ -149,8 +151,7 @@ static void rtc_wait_not_busy(struct spear_rtc_config *config)
 static irqreturn_t spear_rtc_irq(int irq, void *dev_id)
 {
-        struct rtc_device *rtc = (struct rtc_device *)dev_id;
+        struct spear_rtc_config *config = dev_id;
-        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
        unsigned long flags, events = 0;
        unsigned int irq_data;
@@ -161,7 +162,7 @@ static irqreturn_t spear_rtc_irq(int irq, void *dev_id)
        if ((irq_data & RTC_INT_MASK)) {
                spear_rtc_clear_interrupt(config);
                events = RTC_IRQF | RTC_AF;
-                rtc_update_irq(rtc, 1, events);
+                rtc_update_irq(config->rtc, 1, events);
                return IRQ_HANDLED;
        } else
                return IRQ_NONE;
@@ -203,9 +204,7 @@ static void bcd2tm(struct rtc_time *tm)
 */
 static int spear_rtc_read_time(struct device *dev, struct rtc_time *tm)
 {
-        struct platform_device *pdev = to_platform_device(dev);
+        struct spear_rtc_config *config = dev_get_drvdata(dev);
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
-        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
        unsigned int time, date;
        /* we don't report wday/yday/isdst ... */
@@ -234,9 +233,7 @@ static int spear_rtc_read_time(struct device *dev, struct rtc_time *tm)
 */
 static int spear_rtc_set_time(struct device *dev, struct rtc_time *tm)
 {
-        struct platform_device *pdev = to_platform_device(dev);
+        struct spear_rtc_config *config = dev_get_drvdata(dev);
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
-        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
        unsigned int time, date, err = 0;
        if (tm2bcd(tm) < 0)
@@ -266,9 +263,7 @@ static int spear_rtc_set_time(struct device *dev, struct rtc_time *tm)
 */
 static int spear_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
 {
-        struct platform_device *pdev = to_platform_device(dev);
+        struct spear_rtc_config *config = dev_get_drvdata(dev);
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
-        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
        unsigned int time, date;
        rtc_wait_not_busy(config);
@@ -298,9 +293,7 @@ static int spear_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
 */
 static int spear_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
 {
-        struct platform_device *pdev = to_platform_device(dev);
+        struct spear_rtc_config *config = dev_get_drvdata(dev);
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
-        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
        unsigned int time, date, err = 0;
        if (tm2bcd(&alm->time) < 0)
@@ -326,17 +319,42 @@ static int spear_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
        return 0;
 }
+static int spear_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+        struct spear_rtc_config *config = dev_get_drvdata(dev);
+        int ret = 0;
+        spear_rtc_clear_interrupt(config);
+        switch (enabled) {
+        case 0:
+                /* alarm off */
+                spear_rtc_disable_interrupt(config);
+                break;
+        case 1:
+                /* alarm on */
+                spear_rtc_enable_interrupt(config);
+                break;
+        default:
+                ret = -EINVAL;
+                break;
+        }
+        return ret;
+}
 static struct rtc_class_ops spear_rtc_ops = {
        .read_time = spear_rtc_read_time,
        .set_time = spear_rtc_set_time,
        .read_alarm = spear_rtc_read_alarm,
        .set_alarm = spear_rtc_set_alarm,
+        .alarm_irq_enable = spear_alarm_irq_enable,
 };
 static int __devinit spear_rtc_probe(struct platform_device *pdev)
 {
        struct resource *res;
-        struct rtc_device *rtc;
        struct spear_rtc_config *config;
        unsigned int status = 0;
        int irq;
@@ -376,19 +394,17 @@ static int __devinit spear_rtc_probe(struct platform_device *pdev)
        }
        spin_lock_init(&config->lock);
+        platform_set_drvdata(pdev, config);
-        rtc = rtc_device_register(pdev->name, &pdev->dev, &spear_rtc_ops,
+        config->rtc = rtc_device_register(pdev->name, &pdev->dev,
-                        THIS_MODULE);
+                        &spear_rtc_ops, THIS_MODULE);
-        if (IS_ERR(rtc)) {
+        if (IS_ERR(config->rtc)) {
                dev_err(&pdev->dev, "can't register RTC device, err %ld\n",
-                                PTR_ERR(rtc));
+                                PTR_ERR(config->rtc));
-                status = PTR_ERR(rtc);
+                status = PTR_ERR(config->rtc);
                goto err_iounmap;
        }
-        platform_set_drvdata(pdev, rtc);
-        dev_set_drvdata(&rtc->dev, config);
        /* alarm irqs */
        irq = platform_get_irq(pdev, 0);
        if (irq < 0) {
@@ -397,7 +413,7 @@ static int __devinit spear_rtc_probe(struct platform_device *pdev)
                goto err_clear_platdata;
        }
-        status = request_irq(irq, spear_rtc_irq, 0, pdev->name, rtc);
+        status = request_irq(irq, spear_rtc_irq, 0, pdev->name, config);
        if (status) {
                dev_err(&pdev->dev, "Alarm interrupt IRQ%d already \
                                claimed\n", irq);
@@ -411,8 +427,7 @@ static int __devinit spear_rtc_probe(struct platform_device *pdev)
 err_clear_platdata:
        platform_set_drvdata(pdev, NULL);
-        dev_set_drvdata(&rtc->dev, NULL);
+        rtc_device_unregister(config->rtc);
-        rtc_device_unregister(rtc);
 err_iounmap:
        iounmap(config->ioaddr);
 err_disable_clock:
@@ -429,8 +444,7 @@ err_release_region:
 static int __devexit spear_rtc_remove(struct platform_device *pdev)
 {
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
+        struct spear_rtc_config *config = platform_get_drvdata(pdev);
-        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
        int irq;
        struct resource *res;
@@ -448,8 +462,7 @@ static int __devexit spear_rtc_remove(struct platform_device *pdev)
        if (res)
                release_mem_region(res->start, resource_size(res));
        platform_set_drvdata(pdev, NULL);
-        dev_set_drvdata(&rtc->dev, NULL);
+        rtc_device_unregister(config->rtc);
-        rtc_device_unregister(rtc);
        return 0;
 }
@@ -458,14 +471,14 @@ static int __devexit spear_rtc_remove(struct platform_device *pdev)
 static int spear_rtc_suspend(struct platform_device *pdev, pm_message_t state)
 {
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
+        struct spear_rtc_config *config = platform_get_drvdata(pdev);
-        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
        int irq;
        irq = platform_get_irq(pdev, 0);
-        if (device_may_wakeup(&pdev->dev))
+        if (device_may_wakeup(&pdev->dev)) {
-                enable_irq_wake(irq);
+                if (!enable_irq_wake(irq))
-        else {
+                        config->irq_wake = 1;
+        } else {
                spear_rtc_disable_interrupt(config);
                clk_disable(config->clk);
        }
@@ -475,15 +488,17 @@ static int spear_rtc_suspend(struct platform_device *pdev, pm_message_t state)
 static int spear_rtc_resume(struct platform_device *pdev)
 {
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
+        struct spear_rtc_config *config = platform_get_drvdata(pdev);
-        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
        int irq;
        irq = platform_get_irq(pdev, 0);
-        if (device_may_wakeup(&pdev->dev))
+        if (device_may_wakeup(&pdev->dev)) {
-                disable_irq_wake(irq);
+                if (config->irq_wake) {
-        else {
+                        disable_irq_wake(irq);
+                        config->irq_wake = 0;
+                }
+        } else {
                clk_enable(config->clk);
                spear_rtc_enable_interrupt(config);
        }
@@ -498,8 +513,7 @@ static int spear_rtc_resume(struct platform_device *pdev)
 static void spear_rtc_shutdown(struct platform_device *pdev)
 {
-        struct rtc_device *rtc = platform_get_drvdata(pdev);
+        struct spear_rtc_config *config = platform_get_drvdata(pdev);
-        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
        spear_rtc_disable_interrupt(config);
        clk_disable(config->clk);
diff --git a/drivers/rtc/rtc-stk17ta8.c b/drivers/rtc/rtc-stk17ta8.c
index 7621116bd20d..279f5cfa691a 100644
--- a/drivers/rtc/rtc-stk17ta8.c
+++ b/drivers/rtc/rtc-stk17ta8.c
@@ -329,7 +329,7 @@ static int __devinit stk17ta8_rtc_probe(struct platform_device *pdev)
                writeb(0, ioaddr + RTC_INTERRUPTS);
                if (devm_request_irq(&pdev->dev, pdata->irq,
                                stk17ta8_rtc_interrupt,
-                                IRQF_DISABLED | IRQF_SHARED,
+                                IRQF_SHARED,
                                pdev->name, pdev) < 0) {
                        dev_warn(&pdev->dev, "interrupt not available.\n");
                        pdata->irq = 0;
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index d43b4f6eb4e4..258abeabf624 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -112,6 +112,7 @@ static const u8 twl6030_rtc_reg_map[] = {
 #define BIT_RTC_CTRL_REG_TEST_MODE_M             0x10
 #define BIT_RTC_CTRL_REG_SET_32_COUNTER_M        0x20
 #define BIT_RTC_CTRL_REG_GET_TIME_M              0x40
+#define BIT_RTC_CTRL_REG_RTC_V_OPT               0x80
 /* RTC_STATUS_REG bitfields */
 #define BIT_RTC_STATUS_REG_RUN_M                 0x02
@@ -176,6 +177,10 @@ static int set_rtc_irq_bit(unsigned char bit)
        unsigned char val;
        int ret;
+        /* if the bit is set, return from here */
+        if (rtc_irq_bits & bit)
+                return 0;
        val = rtc_irq_bits | bit;
        val &= ~BIT_RTC_INTERRUPTS_REG_EVERY_M;
        ret = twl_rtc_write_u8(val, REG_RTC_INTERRUPTS_REG);
@@ -193,6 +198,10 @@ static int mask_rtc_irq_bit(unsigned char bit)
        unsigned char val;
        int ret;
+        /* if the bit is clear, return from here */
+        if (!(rtc_irq_bits & bit))
+                return 0;
        val = rtc_irq_bits & ~bit;
        ret = twl_rtc_write_u8(val, REG_RTC_INTERRUPTS_REG);
        if (ret == 0)
@@ -227,25 +236,57 @@ static int twl_rtc_read_time(struct device *dev, struct rtc_time *tm)
        unsigned char rtc_data[ALL_TIME_REGS + 1];
        int ret;
        u8 save_control;
+        u8 rtc_control;
        ret = twl_rtc_read_u8(&save_control, REG_RTC_CTRL_REG);
-        if (ret < 0)
+        if (ret < 0) {
+                dev_err(dev, "%s: reading CTRL_REG, error %d\n", __func__, ret);
                return ret;
+        }
+        /* for twl6030/32 make sure BIT_RTC_CTRL_REG_GET_TIME_M is clear */
+        if (twl_class_is_6030()) {
+                if (save_control & BIT_RTC_CTRL_REG_GET_TIME_M) {
+                        save_control &= ~BIT_RTC_CTRL_REG_GET_TIME_M;
+                        ret = twl_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+                        if (ret < 0) {
+                                dev_err(dev, "%s clr GET_TIME, error %d\n",
+                                        __func__, ret);
+                                return ret;
+                        }
+                }
+        }
-        save_control |= BIT_RTC_CTRL_REG_GET_TIME_M;
+        /* Copy RTC counting registers to static registers or latches */
+        rtc_control = save_control | BIT_RTC_CTRL_REG_GET_TIME_M;
-        ret = twl_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+        /* for twl6030/32 enable read access to static shadowed registers */
-        if (ret < 0)
+        if (twl_class_is_6030())
+                rtc_control |= BIT_RTC_CTRL_REG_RTC_V_OPT;
+        ret = twl_rtc_write_u8(rtc_control, REG_RTC_CTRL_REG);
+        if (ret < 0) {
+                dev_err(dev, "%s: writing CTRL_REG, error %d\n", __func__, ret);
                return ret;
+        }
        ret = twl_i2c_read(TWL_MODULE_RTC, rtc_data,
                        (rtc_reg_map[REG_SECONDS_REG]), ALL_TIME_REGS);
        if (ret < 0) {
-                dev_err(dev, "rtc_read_time error %d\n", ret);
+                dev_err(dev, "%s: reading data, error %d\n", __func__, ret);
                return ret;
        }
+        /* for twl6030 restore original state of rtc control register */
+        if (twl_class_is_6030()) {
+                ret = twl_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+                if (ret < 0) {
+                        dev_err(dev, "%s: restore CTRL_REG, error %d\n",
+                                __func__, ret);
+                        return ret;
+                }
+        }
        tm->tm_sec = bcd2bin(rtc_data[0]);
        tm->tm_min = bcd2bin(rtc_data[1]);
        tm->tm_hour = bcd2bin(rtc_data[2]);
@@ -357,7 +398,7 @@ out:
 static irqreturn_t twl_rtc_interrupt(int irq, void *rtc)
 {
-        unsigned long events = 0;
+        unsigned long events;
        int ret = IRQ_NONE;
        int res;
        u8 rd_reg;
@@ -372,11 +413,11 @@ static irqreturn_t twl_rtc_interrupt(int irq, void *rtc)
         * by reading RTS_INTERRUPTS_REGISTER[IT_TIMER,IT_ALARM]
         */
        if (rd_reg & BIT_RTC_STATUS_REG_ALARM_M)
-                events |= RTC_IRQF | RTC_AF;
+                events = RTC_IRQF | RTC_AF;
        else
-                events |= RTC_IRQF | RTC_UF;
+                events = RTC_IRQF | RTC_PF;
-        res = twl_rtc_write_u8(rd_reg | BIT_RTC_STATUS_REG_ALARM_M,
+        res = twl_rtc_write_u8(BIT_RTC_STATUS_REG_ALARM_M,
                                   REG_RTC_STATUS_REG);
        if (res)
                goto out;
@@ -449,19 +490,11 @@ static int __devinit twl_rtc_probe(struct platform_device *pdev)
                        REG_INT_MSK_STS_A);
        }
-        /* Check RTC module status, Enable if it is off */
+        dev_info(&pdev->dev, "Enabling TWL-RTC\n");
-        ret = twl_rtc_read_u8(&rd_reg, REG_RTC_CTRL_REG);
+        ret = twl_rtc_write_u8(BIT_RTC_CTRL_REG_STOP_RTC_M, REG_RTC_CTRL_REG);
        if (ret < 0)
                goto out1;
-        if (!(rd_reg & BIT_RTC_CTRL_REG_STOP_RTC_M)) {
-                dev_info(&pdev->dev, "Enabling TWL-RTC.\n");
-                rd_reg = BIT_RTC_CTRL_REG_STOP_RTC_M;
-                ret = twl_rtc_write_u8(rd_reg, REG_RTC_CTRL_REG);
-                if (ret < 0)
-                        goto out1;
-        }
        /* init cached IRQ enable bits */
        ret = twl_rtc_read_u8(&rtc_irq_bits, REG_RTC_INTERRUPTS_REG);
        if (ret < 0)
diff --git a/drivers/rtc/rtc-tx4939.c b/drivers/rtc/rtc-tx4939.c
index aac0ffed4345..a12bfac49d36 100644
--- a/drivers/rtc/rtc-tx4939.c
+++ b/drivers/rtc/rtc-tx4939.c
@@ -266,7 +266,7 @@ static int __init tx4939_rtc_probe(struct platform_device *pdev)
        spin_lock_init(&pdata->lock);
        tx4939_rtc_cmd(pdata->rtcreg, TX4939_RTCCTL_COMMAND_NOP);
        if (devm_request_irq(&pdev->dev, irq, tx4939_rtc_interrupt,
-                             IRQF_DISABLED, pdev->name, &pdev->dev) < 0)
+                             0, pdev->name, &pdev->dev) < 0)
                return -EBUSY;
        rtc = rtc_device_register(pdev->name, &pdev->dev,
                                  &tx4939_rtc_ops, THIS_MODULE);
diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
index fcbfdda2993b..5f60a7c6a155 100644
--- a/drivers/rtc/rtc-vr41xx.c
+++ b/drivers/rtc/rtc-vr41xx.c
@@ -333,7 +333,7 @@ static int __devinit rtc_probe(struct platform_device *pdev)
                goto err_device_unregister;
        }
-        retval = request_irq(aie_irq, elapsedtime_interrupt, IRQF_DISABLED,
+        retval = request_irq(aie_irq, elapsedtime_interrupt, 0,
                             "elapsed_time", pdev);
        if (retval < 0)
                goto err_device_unregister;
@@ -342,7 +342,7 @@ static int __devinit rtc_probe(struct platform_device *pdev)
        if (pie_irq <= 0)
                goto err_free_irq;
-        retval = request_irq(pie_irq, rtclong1_interrupt, IRQF_DISABLED,
+        retval = request_irq(pie_irq, rtclong1_interrupt, 0,
                             "rtclong1", pdev);
        if (retval < 0)
                goto err_free_irq;
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index 8c051d3179db..403b3d41d101 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -623,15 +623,7 @@ static struct i2c_driver x1205_driver = {
        .id_table       = x1205_id,
 };
-static int __init x1205_init(void)
+module_i2c_driver(x1205_driver);
-{
-        return i2c_add_driver(&x1205_driver);
-}
-static void __exit x1205_exit(void)
-{
-        i2c_del_driver(&x1205_driver);
-}
 MODULE_AUTHOR(
        "Karen Spearel <kas111 at gmail dot com>, "
@@ -639,6 +631,3 @@ MODULE_AUTHOR(
 MODULE_DESCRIPTION("Xicor/Intersil X1205 RTC driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
-module_init(x1205_init);
-module_exit(x1205_exit);
author	Dmitry Torokhov <dmitry.torokhov@gmail.com>	2012-05-24 04:13:01 -0400
committer	Dmitry Torokhov <dmitry.torokhov@gmail.com>	2012-05-24 04:13:01 -0400
commit	e644dae645e167d154c0526358940986682a72b0 (patch)
tree	972993c6568085b8d407fc7e13de10f4b93c651d /drivers/rtc
parent	899c612d74d4a242158a4db20367388d6299c028 (diff)
parent	86809173ce32ef03bd4d0389dfc72df0c805e9c4 (diff)