Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / drivers / rtc / rtc-cmos.c

diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 0963c93..b0e4a3e 100644 (file)
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -647,6 +647,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
        int                             retval = 0;
        unsigned char                   rtc_control;
        unsigned                        address_space;
+       u32                             flags = 0;
 
        /* there can be only one ... */
        if (cmos_rtc.dev)
@@ -660,9 +661,12 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
         * REVISIT non-x86 systems may instead use memory space resources
         * (needing ioremap etc), not i/o space resources like this ...
         */
-       ports = request_region(ports->start,
-                       resource_size(ports),
-                       driver_name);
+       if (RTC_IOMAPPED)
+               ports = request_region(ports->start, resource_size(ports),
+                                      driver_name);
+       else
+               ports = request_mem_region(ports->start, resource_size(ports),
+                                          driver_name);
        if (!ports) {
                dev_dbg(dev, "i/o registers already in use\n");
                return -EBUSY;
@@ -699,6 +703,11 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
         * expect CMOS_READ and friends to handle.
         */
        if (info) {
+               if (info->flags)
+                       flags = info->flags;
+               if (info->address_space)
+                       address_space = info->address_space;
+
                if (info->rtc_day_alarm && info->rtc_day_alarm < 128)
                        cmos_rtc.day_alrm = info->rtc_day_alarm;
                if (info->rtc_mon_alarm && info->rtc_mon_alarm < 128)
@@ -726,18 +735,21 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 
        spin_lock_irq(&rtc_lock);
 
-       /* force periodic irq to CMOS reset default of 1024Hz;
-        *
-        * REVISIT it's been reported that at least one x86_64 ALI mobo
-        * doesn't use 32KHz here ... for portability we might need to
-        * do something about other clock frequencies.
-        */
-       cmos_rtc.rtc->irq_freq = 1024;
-       hpet_set_periodic_freq(cmos_rtc.rtc->irq_freq);
-       CMOS_WRITE(RTC_REF_CLCK_32KHZ | 0x06, RTC_FREQ_SELECT);
+       if (!(flags & CMOS_RTC_FLAGS_NOFREQ)) {
+               /* force periodic irq to CMOS reset default of 1024Hz;
+                *
+                * REVISIT it's been reported that at least one x86_64 ALI
+                * mobo doesn't use 32KHz here ... for portability we might
+                * need to do something about other clock frequencies.
+                */
+               cmos_rtc.rtc->irq_freq = 1024;
+               hpet_set_periodic_freq(cmos_rtc.rtc->irq_freq);
+               CMOS_WRITE(RTC_REF_CLCK_32KHZ | 0x06, RTC_FREQ_SELECT);
+       }
 
        /* disable irqs */
-       cmos_irq_disable(&cmos_rtc, RTC_PIE | RTC_AIE | RTC_UIE);
+       if (is_valid_irq(rtc_irq))
+               cmos_irq_disable(&cmos_rtc, RTC_PIE | RTC_AIE | RTC_UIE);
 
        rtc_control = CMOS_READ(RTC_CONTROL);
 
@@ -802,14 +814,18 @@ cleanup1:
        cmos_rtc.dev = NULL;
        rtc_device_unregister(cmos_rtc.rtc);
 cleanup0:
-       release_region(ports->start, resource_size(ports));
+       if (RTC_IOMAPPED)
+               release_region(ports->start, resource_size(ports));
+       else
+               release_mem_region(ports->start, resource_size(ports));
        return retval;
 }
 
-static void cmos_do_shutdown(void)
+static void cmos_do_shutdown(int rtc_irq)
 {
        spin_lock_irq(&rtc_lock);
-       cmos_irq_disable(&cmos_rtc, RTC_IRQMASK);
+       if (is_valid_irq(rtc_irq))
+               cmos_irq_disable(&cmos_rtc, RTC_IRQMASK);
        spin_unlock_irq(&rtc_lock);
 }
 
@@ -818,7 +834,7 @@ static void __exit cmos_do_remove(struct device *dev)
        struct cmos_rtc *cmos = dev_get_drvdata(dev);
        struct resource *ports;
 
-       cmos_do_shutdown();
+       cmos_do_shutdown(cmos->irq);
 
        sysfs_remove_bin_file(&dev->kobj, &nvram);
 
@@ -831,7 +847,10 @@ static void __exit cmos_do_remove(struct device *dev)
        cmos->rtc = NULL;
 
        ports = cmos->iomem;
-       release_region(ports->start, resource_size(ports));
+       if (RTC_IOMAPPED)
+               release_region(ports->start, resource_size(ports));
+       else
+               release_mem_region(ports->start, resource_size(ports));
        cmos->iomem = NULL;
 
        cmos->dev = NULL;
@@ -1065,10 +1084,13 @@ static void __exit cmos_pnp_remove(struct pnp_dev *pnp)
 
 static void cmos_pnp_shutdown(struct pnp_dev *pnp)
 {
-       if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(&pnp->dev))
+       struct device *dev = &pnp->dev;
+       struct cmos_rtc *cmos = dev_get_drvdata(dev);
+
+       if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(dev))
                return;
 
-       cmos_do_shutdown();
+       cmos_do_shutdown(cmos->irq);
 }
 
 static const struct pnp_device_id rtc_ids[] = {
@@ -1143,11 +1165,21 @@ static inline void cmos_of_init(struct platform_device *pdev) {}
 
 static int __init cmos_platform_probe(struct platform_device *pdev)
 {
+       struct resource *resource;
+       int irq;
+
        cmos_of_init(pdev);
        cmos_wake_setup(&pdev->dev);
-       return cmos_do_probe(&pdev->dev,
-                       platform_get_resource(pdev, IORESOURCE_IO, 0),
-                       platform_get_irq(pdev, 0));
+
+       if (RTC_IOMAPPED)
+               resource = platform_get_resource(pdev, IORESOURCE_IO, 0);
+       else
+               resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       irq = platform_get_irq(pdev, 0);
+       if (irq < 0)
+               irq = -1;
+
+       return cmos_do_probe(&pdev->dev, resource, irq);
 }
 
 static int __exit cmos_platform_remove(struct platform_device *pdev)
@@ -1158,10 +1190,13 @@ static int __exit cmos_platform_remove(struct platform_device *pdev)
 
 static void cmos_platform_shutdown(struct platform_device *pdev)
 {
-       if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(&pdev->dev))
+       struct device *dev = &pdev->dev;
+       struct cmos_rtc *cmos = dev_get_drvdata(dev);
+
+       if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(dev))
                return;
 
-       cmos_do_shutdown();
+       cmos_do_shutdown(cmos->irq);
 }
 
 /* work with hotplug and coldplug */