Merge branch 'topic/powermac' into for-linus

[linux-2.6-omap-h63xx.git] / drivers / rtc / rtc-sa1100.c

diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 66a9bb85bbe8698e2b7234b4d26f4b13ef3d52d0..d26a5f82aabaf8eb58c61eb39c678d0f890ed5d1 100644 (file)
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -38,11 +38,11 @@
 #include <mach/pxa-regs.h>
 #endif
 
-#define TIMER_FREQ             CLOCK_TICK_RATE
 #define RTC_DEF_DIVIDER                32768 - 1
 #define RTC_DEF_TRIM           0
 
 static unsigned long rtc_freq = 1024;
+static unsigned long timer_freq;
 static struct rtc_time rtc_alarm;
 static DEFINE_SPINLOCK(sa1100_rtc_lock);
 
@@ -157,7 +157,7 @@ static irqreturn_t timer1_interrupt(int irq, void *dev_id)
        rtc_update_irq(rtc, rtc_timer1_count, RTC_PF | RTC_IRQF);
 
        if (rtc_timer1_count == 1)
-               rtc_timer1_count = (rtc_freq * ((1<<30)/(TIMER_FREQ>>2)));
+               rtc_timer1_count = (rtc_freq * ((1 << 30) / (timer_freq >> 2)));
 
        return IRQ_HANDLED;
 }
@@ -166,7 +166,7 @@ static int sa1100_rtc_read_callback(struct device *dev, int data)
 {
        if (data & RTC_PF) {
                /* interpolate missed periods and set match for the next */
-               unsigned long period = TIMER_FREQ/rtc_freq;
+               unsigned long period = timer_freq / rtc_freq;
                unsigned long oscr = OSCR;
                unsigned long osmr1 = OSMR1;
                unsigned long missed = (oscr - osmr1)/period;
@@ -263,7 +263,7 @@ static int sa1100_rtc_ioctl(struct device *dev, unsigned int cmd,
                return 0;
        case RTC_PIE_ON:
                spin_lock_irq(&sa1100_rtc_lock);
-               OSMR1 = TIMER_FREQ/rtc_freq + OSCR;
+               OSMR1 = timer_freq / rtc_freq + OSCR;
                OIER |= OIER_E1;
                rtc_timer1_count = 1;
                spin_unlock_irq(&sa1100_rtc_lock);
@@ -271,7 +271,7 @@ static int sa1100_rtc_ioctl(struct device *dev, unsigned int cmd,
        case RTC_IRQP_READ:
                return put_user(rtc_freq, (unsigned long *)arg);
        case RTC_IRQP_SET:
-               if (arg < 1 || arg > TIMER_FREQ)
+               if (arg < 1 || arg > timer_freq)
                        return -EINVAL;
                rtc_freq = arg;
                return 0;
@@ -352,6 +352,8 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
 {
        struct rtc_device *rtc;
 
+       timer_freq = get_clock_tick_rate();
+
        /*
         * According to the manual we should be able to let RTTR be zero
         * and then a default diviser for a 32.768KHz clock is used.