X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Frtc%2Frtc-sa1100.c;h=d26a5f82aabaf8eb58c61eb39c678d0f890ed5d1;hb=277835adca10a696ac3e2a103ea537658c141a3c;hp=6f1e9a9804bc9a7b0edbee3e83c256d5c1572e07;hpb=1977f032722c27ee3730284582fd3991ad9ac81b;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 6f1e9a9..d26a5f8 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -31,22 +31,57 @@
 #include <linux/pm.h>
 #include <linux/bitops.h>
 
-#include <asm/hardware.h>
+#include <mach/hardware.h>
 #include <asm/irq.h>
-#include <asm/rtc.h>
 
 #ifdef CONFIG_ARCH_PXA
-#include <asm/arch/pxa-regs.h>
+#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);
 
+static inline int rtc_periodic_alarm(struct rtc_time *tm)
+{
+	return  (tm->tm_year == -1) ||
+		((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;
@@ -122,7 +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;
 }
@@ -131,7 +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;
@@ -228,7 +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);
@@ -236,7 +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;
@@ -317,6 +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.
@@ -331,6 +368,8 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
 		RCNR = 0;
 	}
 
+	device_init_wakeup(&pdev->dev, 1);
+
 	rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops,
 				THIS_MODULE);
 
@@ -352,9 +391,30 @@ static int sa1100_rtc_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int sa1100_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	if (device_may_wakeup(&pdev->dev))
+		enable_irq_wake(IRQ_RTCAlrm);
+	return 0;
+}
+
+static int sa1100_rtc_resume(struct platform_device *pdev)
+{
+	if (device_may_wakeup(&pdev->dev))
+		disable_irq_wake(IRQ_RTCAlrm);
+	return 0;
+}
+#else
+#define sa1100_rtc_suspend	NULL
+#define sa1100_rtc_resume	NULL
+#endif
+
 static struct platform_driver sa1100_rtc_driver = {
 	.probe		= sa1100_rtc_probe,
 	.remove		= sa1100_rtc_remove,
+	.suspend	= sa1100_rtc_suspend,
+	.resume		= sa1100_rtc_resume,
 	.driver		= {
 		.name		= "sa1100-rtc",
 	},
@@ -376,3 +436,4 @@ module_exit(sa1100_rtc_exit);
 MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
 MODULE_DESCRIPTION("SA11x0/PXA2xx Realtime Clock Driver (RTC)");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:sa1100-rtc");