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path: root/drivers/rtc/rtc-at91.c
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Diffstat (limited to 'drivers/rtc/rtc-at91.c')
-rw-r--r--drivers/rtc/rtc-at91.c79
1 files changed, 49 insertions, 30 deletions
diff --git a/drivers/rtc/rtc-at91.c b/drivers/rtc/rtc-at91.c
index b03aba5f39eb..b676f443c17e 100644
--- a/drivers/rtc/rtc-at91.c
+++ b/drivers/rtc/rtc-at91.c
@@ -40,11 +40,11 @@
static DECLARE_COMPLETION(at91_rtc_updated);
static unsigned int at91_alarm_year = AT91_RTC_EPOCH;
-
/*
* Decode time/date into rtc_time structure
*/
-static void at91_rtc_decodetime(unsigned int timereg, unsigned int calreg, struct rtc_time *tm)
+static void at91_rtc_decodetime(unsigned int timereg, unsigned int calreg,
+ struct rtc_time *tm)
{
unsigned int time, date;
@@ -52,7 +52,8 @@ static void at91_rtc_decodetime(unsigned int timereg, unsigned int calreg, struc
do {
time = at91_sys_read(timereg);
date = at91_sys_read(calreg);
- } while ((time != at91_sys_read(timereg)) || (date != at91_sys_read(calreg)));
+ } while ((time != at91_sys_read(timereg)) ||
+ (date != at91_sys_read(calreg)));
tm->tm_sec = BCD2BIN((time & AT91_RTC_SEC) >> 0);
tm->tm_min = BCD2BIN((time & AT91_RTC_MIN) >> 8);
@@ -63,8 +64,8 @@ static void at91_rtc_decodetime(unsigned int timereg, unsigned int calreg, struc
* the year - so these will return an invalid value. When an
* alarm is set, at91_alarm_year wille store the current year.
*/
- tm->tm_year = BCD2BIN(date & AT91_RTC_CENT) * 100; /* century */
- tm->tm_year += BCD2BIN((date & AT91_RTC_YEAR) >> 8); /* year */
+ tm->tm_year = BCD2BIN(date & AT91_RTC_CENT) * 100; /* century */
+ tm->tm_year += BCD2BIN((date & AT91_RTC_YEAR) >> 8); /* year */
tm->tm_wday = BCD2BIN((date & AT91_RTC_DAY) >> 21) - 1; /* day of the week [0-6], Sunday=0 */
tm->tm_mon = BCD2BIN((date & AT91_RTC_MONTH) >> 16) - 1;
@@ -81,7 +82,8 @@ static int at91_rtc_readtime(struct device *dev, struct rtc_time *tm)
tm->tm_year = tm->tm_year - 1900;
pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __FUNCTION__,
- 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
+ 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
return 0;
}
@@ -94,14 +96,15 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm)
unsigned long cr;
pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __FUNCTION__,
- 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
+ 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
/* Stop Time/Calendar from counting */
cr = at91_sys_read(AT91_RTC_CR);
at91_sys_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM);
at91_sys_write(AT91_RTC_IER, AT91_RTC_ACKUPD);
- wait_for_completion(&at91_rtc_updated); /* wait for ACKUPD interrupt */
+ wait_for_completion(&at91_rtc_updated); /* wait for ACKUPD interrupt */
at91_sys_write(AT91_RTC_IDR, AT91_RTC_ACKUPD);
at91_sys_write(AT91_RTC_TIMR,
@@ -110,10 +113,10 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm)
| BIN2BCD(tm->tm_hour) << 16);
at91_sys_write(AT91_RTC_CALR,
- BIN2BCD((tm->tm_year + 1900) / 100) /* century */
- | BIN2BCD(tm->tm_year % 100) << 8 /* year */
- | BIN2BCD(tm->tm_mon + 1) << 16 /* tm_mon starts at zero */
- | BIN2BCD(tm->tm_wday + 1) << 21 /* day of the week [0-6], Sunday=0 */
+ BIN2BCD((tm->tm_year + 1900) / 100) /* century */
+ | BIN2BCD(tm->tm_year % 100) << 8 /* year */
+ | BIN2BCD(tm->tm_mon + 1) << 16 /* tm_mon starts at zero */
+ | BIN2BCD(tm->tm_wday + 1) << 21 /* day of the week [0-6], Sunday=0 */
| BIN2BCD(tm->tm_mday) << 24);
/* Restart Time/Calendar */
@@ -135,7 +138,8 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
tm->tm_year = at91_alarm_year - 1900;
pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __FUNCTION__,
- 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
+ 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
return 0;
}
@@ -166,7 +170,8 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
| AT91_RTC_DATEEN | AT91_RTC_MTHEN);
pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __FUNCTION__,
- at91_alarm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
+ at91_alarm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour,
+ tm.tm_min, tm.tm_sec);
return 0;
}
@@ -174,7 +179,8 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
/*
* Handle commands from user-space
*/
-static int at91_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
+static int at91_rtc_ioctl(struct device *dev, unsigned int cmd,
+ unsigned long arg)
{
int ret = 0;
@@ -217,10 +223,14 @@ static int at91_rtc_proc(struct device *dev, struct seq_file *seq)
{
unsigned long imr = at91_sys_read(AT91_RTC_IMR);
- seq_printf(seq, "alarm_IRQ\t: %s\n", (imr & AT91_RTC_ALARM) ? "yes" : "no");
- seq_printf(seq, "update_IRQ\t: %s\n", (imr & AT91_RTC_ACKUPD) ? "yes" : "no");
- seq_printf(seq, "periodic_IRQ\t: %s\n", (imr & AT91_RTC_SECEV) ? "yes" : "no");
- seq_printf(seq, "periodic_freq\t: %ld\n", (unsigned long) AT91_RTC_FREQ);
+ seq_printf(seq, "alarm_IRQ\t: %s\n",
+ (imr & AT91_RTC_ALARM) ? "yes" : "no");
+ seq_printf(seq, "update_IRQ\t: %s\n",
+ (imr & AT91_RTC_ACKUPD) ? "yes" : "no");
+ seq_printf(seq, "periodic_IRQ\t: %s\n",
+ (imr & AT91_RTC_SECEV) ? "yes" : "no");
+ seq_printf(seq, "periodic_freq\t: %ld\n",
+ (unsigned long) AT91_RTC_FREQ);
return 0;
}
@@ -228,9 +238,10 @@ static int at91_rtc_proc(struct device *dev, struct seq_file *seq)
/*
* IRQ handler for the RTC
*/
-static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
{
- struct platform_device *pdev = (struct platform_device *)dev_id;
+ struct platform_device *pdev = dev_id;
struct rtc_device *rtc = platform_get_drvdata(pdev);
unsigned int rtsr;
unsigned long events = 0;
@@ -244,7 +255,7 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id, struct pt_regs *reg
if (rtsr & AT91_RTC_ACKUPD)
complete(&at91_rtc_updated);
- at91_sys_write(AT91_RTC_SCCR, rtsr); /* clear status reg */
+ at91_sys_write(AT91_RTC_SCCR, rtsr); /* clear status reg */
rtc_update_irq(&rtc->class_dev, 1, events);
@@ -277,15 +288,20 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
at91_sys_write(AT91_RTC_MR, 0); /* 24 hour mode */
/* Disable all interrupts */
- at91_sys_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM | AT91_RTC_SECEV | AT91_RTC_TIMEV | AT91_RTC_CALEV);
+ at91_sys_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM |
+ AT91_RTC_SECEV | AT91_RTC_TIMEV |
+ AT91_RTC_CALEV);
- ret = request_irq(AT91_ID_SYS, at91_rtc_interrupt, SA_SHIRQ, "at91_rtc", pdev);
+ ret = request_irq(AT91_ID_SYS, at91_rtc_interrupt,
+ SA_SHIRQ, "at91_rtc", pdev);
if (ret) {
- printk(KERN_ERR "at91_rtc: IRQ %d already in use.\n", AT91_ID_SYS);
+ printk(KERN_ERR "at91_rtc: IRQ %d already in use.\n",
+ AT91_ID_SYS);
return ret;
}
- rtc = rtc_device_register(pdev->name, &pdev->dev, &at91_rtc_ops, THIS_MODULE);
+ rtc = rtc_device_register(pdev->name, &pdev->dev,
+ &at91_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
free_irq(AT91_ID_SYS, pdev);
return PTR_ERR(rtc);
@@ -304,7 +320,9 @@ static int __devexit at91_rtc_remove(struct platform_device *pdev)
struct rtc_device *rtc = platform_get_drvdata(pdev);
/* Disable all interrupts */
- at91_sys_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM | AT91_RTC_SECEV | AT91_RTC_TIMEV | AT91_RTC_CALEV);
+ at91_sys_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM |
+ AT91_RTC_SECEV | AT91_RTC_TIMEV |
+ AT91_RTC_CALEV);
free_irq(AT91_ID_SYS, pdev);
rtc_device_unregister(rtc);
@@ -332,7 +350,8 @@ static int at91_rtc_suspend(struct platform_device *pdev, pm_message_t state)
save_time_delta(&at91_rtc_delta, &time);
pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __FUNCTION__,
- 1900 + tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
+ 1900 + tm.tm_year, tm.tm_mon, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec);
return 0;
}
@@ -349,7 +368,8 @@ static int at91_rtc_resume(struct platform_device *pdev)
restore_time_delta(&at91_rtc_delta, &time);
pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __FUNCTION__,
- 1900 + tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
+ 1900 + tm.tm_year, tm.tm_mon, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec);
return 0;
}
@@ -379,7 +399,6 @@ static void __exit at91_rtc_exit(void)
platform_driver_unregister(&at91_rtc_driver);
}
-
module_init(at91_rtc_init);
module_exit(at91_rtc_exit);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 22:20:23 +0000