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rtc: sa1100: declare irq in resource
[cascardo/linux.git] / drivers / rtc / rtc-sa1100.c
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 91d58bd..0a36c7e 100644 (file)
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -27,6 +27,7 @@
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/interrupt.h>
+#include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/pm.h>
 #include <linux/bitops.h>
@@ -34,24 +35,29 @@
 #include <mach/hardware.h>
 #include <asm/irq.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 DEFINE_SPINLOCK(sa1100_rtc_lock);
+struct sa1100_rtc {
+       spinlock_t              lock;
+       int                     irq_1hz;
+       int                     irq_alarm;
+       struct rtc_device       *rtc;
+};
 
 static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
 {
-       struct platform_device *pdev = to_platform_device(dev_id);
-       struct rtc_device *rtc = platform_get_drvdata(pdev);
+       struct sa1100_rtc *info = dev_get_drvdata(dev_id);
+       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 */
@@ -87,27 +93,27 @@ static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
 
        rtc_update_irq(rtc, 1, events);
 
-       spin_unlock(&sa1100_rtc_lock);
+       spin_unlock(&info->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 = request_irq(info->irq_1hz, sa1100_rtc_interrupt, IRQF_DISABLED,
                "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, IRQF_DISABLED,
                "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;
@@ -116,29 +122,33 @@ 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:
        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(IRQ_RTC1Hz, dev);
+       free_irq(info->irq_alarm, dev);
+       free_irq(info->irq_1hz, dev);
 }
 
 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;
 }
 
@@ -171,10 +181,11 @@ 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_tm_to_time(&alrm->time, &time);
        if (ret != 0)
                goto out;
@@ -185,7 +196,7 @@ static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
        else
                RTSR &= ~RTSR_ALE;
 out:
-       spin_unlock_irq(&sa1100_rtc_lock);
+       spin_unlock_irq(&info->lock);
 
        return ret;
 }
@@ -212,6 +223,21 @@ 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->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
@@ -233,10 +259,11 @@ 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))
-               return PTR_ERR(rtc);
-
-       platform_set_drvdata(pdev, rtc);
+       if (IS_ERR(rtc)) {
+               ret = PTR_ERR(rtc);
+               goto err_dev;
+       }
+       info->rtc = rtc;
 
        /* Fix for a nasty initialization problem the in SA11xx RTSR register.
         * See also the comments in sa1100_rtc_interrupt().
@@ -263,14 +290,21 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
        RTSR = RTSR_AL | RTSR_HZ;
 
        return 0;
+err_dev:
+       platform_set_drvdata(pdev, NULL);
+       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)
-               rtc_device_unregister(rtc);
+       if (info) {
+               rtc_device_unregister(info->rtc);
+               platform_set_drvdata(pdev, NULL);
+               kfree(info);
+       }
 
        return 0;
 }
@@ -278,15 +312,17 @@ 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;
 }
 
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