*
* Modifications from:
* CIH <cih@coventive.com>
- * Nicolas Pitre <nico@cam.org>
+ * Nicolas Pitre <nico@fluxnic.net>
* Andrew Christian <andrew.christian@hp.com>
*
* Converted to the RTC subsystem and Driver Model
#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/regs-rtc.h>
+#include <mach/regs-ost.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;
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;
}
{
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;
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);
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;
{
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.
RCNR = 0;
}
+ device_init_wakeup(&pdev->dev, 1);
+
rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops,
THIS_MODULE);
if (IS_ERR(rtc))
return PTR_ERR(rtc);
- device_init_wakeup(&pdev->dev, 1);
-
platform_set_drvdata(pdev, rtc);
return 0;
}
#ifdef CONFIG_PM
-static int sa1100_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+static int sa1100_rtc_suspend(struct device *dev)
{
- if (device_may_wakeup(&pdev->dev))
+ if (device_may_wakeup(dev))
enable_irq_wake(IRQ_RTCAlrm);
return 0;
}
-static int sa1100_rtc_resume(struct platform_device *pdev)
+static int sa1100_rtc_resume(struct device *dev)
{
- if (device_may_wakeup(&pdev->dev))
+ if (device_may_wakeup(dev))
disable_irq_wake(IRQ_RTCAlrm);
return 0;
}
-#else
-#define sa1100_rtc_suspend NULL
-#define sa1100_rtc_resume NULL
+
+static const struct dev_pm_ops sa1100_rtc_pm_ops = {
+ .suspend = sa1100_rtc_suspend,
+ .resume = sa1100_rtc_resume,
+};
#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",
+ .name = "sa1100-rtc",
+#ifdef CONFIG_PM
+ .pm = &sa1100_rtc_pm_ops,
+#endif
},
};