#ifndef AT91_RTC_H
#define AT91_RTC_H
-#define AT91_RTC_CR (AT91_RTC + 0x00) /* Control Register */
+#define AT91_RTC_CR 0x00 /* Control Register */
#define AT91_RTC_UPDTIM (1 << 0) /* Update Request Time Register */
#define AT91_RTC_UPDCAL (1 << 1) /* Update Request Calendar Register */
#define AT91_RTC_TIMEVSEL (3 << 8) /* Time Event Selection */
#define AT91_RTC_CALEVSEL_MONTH (1 << 16)
#define AT91_RTC_CALEVSEL_YEAR (2 << 16)
-#define AT91_RTC_MR (AT91_RTC + 0x04) /* Mode Register */
+#define AT91_RTC_MR 0x04 /* Mode Register */
#define AT91_RTC_HRMOD (1 << 0) /* 12/24 Hour Mode */
-#define AT91_RTC_TIMR (AT91_RTC + 0x08) /* Time Register */
+#define AT91_RTC_TIMR 0x08 /* Time Register */
#define AT91_RTC_SEC (0x7f << 0) /* Current Second */
#define AT91_RTC_MIN (0x7f << 8) /* Current Minute */
#define AT91_RTC_HOUR (0x3f << 16) /* Current Hour */
#define AT91_RTC_AMPM (1 << 22) /* Ante Meridiem Post Meridiem Indicator */
-#define AT91_RTC_CALR (AT91_RTC + 0x0c) /* Calendar Register */
+#define AT91_RTC_CALR 0x0c /* Calendar Register */
#define AT91_RTC_CENT (0x7f << 0) /* Current Century */
#define AT91_RTC_YEAR (0xff << 8) /* Current Year */
#define AT91_RTC_MONTH (0x1f << 16) /* Current Month */
#define AT91_RTC_DAY (7 << 21) /* Current Day */
#define AT91_RTC_DATE (0x3f << 24) /* Current Date */
-#define AT91_RTC_TIMALR (AT91_RTC + 0x10) /* Time Alarm Register */
+#define AT91_RTC_TIMALR 0x10 /* Time Alarm Register */
#define AT91_RTC_SECEN (1 << 7) /* Second Alarm Enable */
#define AT91_RTC_MINEN (1 << 15) /* Minute Alarm Enable */
#define AT91_RTC_HOUREN (1 << 23) /* Hour Alarm Enable */
-#define AT91_RTC_CALALR (AT91_RTC + 0x14) /* Calendar Alarm Register */
+#define AT91_RTC_CALALR 0x14 /* Calendar Alarm Register */
#define AT91_RTC_MTHEN (1 << 23) /* Month Alarm Enable */
#define AT91_RTC_DATEEN (1 << 31) /* Date Alarm Enable */
-#define AT91_RTC_SR (AT91_RTC + 0x18) /* Status Register */
+#define AT91_RTC_SR 0x18 /* Status Register */
#define AT91_RTC_ACKUPD (1 << 0) /* Acknowledge for Update */
#define AT91_RTC_ALARM (1 << 1) /* Alarm Flag */
#define AT91_RTC_SECEV (1 << 2) /* Second Event */
#define AT91_RTC_TIMEV (1 << 3) /* Time Event */
#define AT91_RTC_CALEV (1 << 4) /* Calendar Event */
-#define AT91_RTC_SCCR (AT91_RTC + 0x1c) /* Status Clear Command Register */
-#define AT91_RTC_IER (AT91_RTC + 0x20) /* Interrupt Enable Register */
-#define AT91_RTC_IDR (AT91_RTC + 0x24) /* Interrupt Disable Register */
-#define AT91_RTC_IMR (AT91_RTC + 0x28) /* Interrupt Mask Register */
+#define AT91_RTC_SCCR 0x1c /* Status Clear Command Register */
+#define AT91_RTC_IER 0x20 /* Interrupt Enable Register */
+#define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */
+#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */
-#define AT91_RTC_VER (AT91_RTC + 0x2c) /* Valid Entry Register */
+#define AT91_RTC_VER 0x2c /* Valid Entry Register */
#define AT91_RTC_NVTIM (1 << 0) /* Non valid Time */
#define AT91_RTC_NVCAL (1 << 1) /* Non valid Calendar */
#define AT91_RTC_NVTIMALR (1 << 2) /* Non valid Time Alarm */
#include <mach/at91_rtc.h>
+#define at91_rtc_read(field) \
+ __raw_readl(at91_rtc_regs + field)
+#define at91_rtc_write(field, val) \
+ __raw_writel((val), at91_rtc_regs + field)
#define AT91_RTC_EPOCH 1900UL /* just like arch/arm/common/rtctime.c */
static DECLARE_COMPLETION(at91_rtc_updated);
static unsigned int at91_alarm_year = AT91_RTC_EPOCH;
+static void __iomem *at91_rtc_regs;
+static int irq;
/*
* Decode time/date into rtc_time structure
/* must read twice in case it changes */
do {
- time = at91_sys_read(timereg);
- date = at91_sys_read(calreg);
- } while ((time != at91_sys_read(timereg)) ||
- (date != at91_sys_read(calreg)));
+ time = at91_rtc_read(timereg);
+ date = at91_rtc_read(calreg);
+ } while ((time != at91_rtc_read(timereg)) ||
+ (date != at91_rtc_read(calreg)));
tm->tm_sec = bcd2bin((time & AT91_RTC_SEC) >> 0);
tm->tm_min = bcd2bin((time & AT91_RTC_MIN) >> 8);
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);
+ cr = at91_rtc_read(AT91_RTC_CR);
+ at91_rtc_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM);
- at91_sys_write(AT91_RTC_IER, AT91_RTC_ACKUPD);
+ at91_rtc_write(AT91_RTC_IER, AT91_RTC_ACKUPD);
wait_for_completion(&at91_rtc_updated); /* wait for ACKUPD interrupt */
- at91_sys_write(AT91_RTC_IDR, AT91_RTC_ACKUPD);
+ at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD);
- at91_sys_write(AT91_RTC_TIMR,
+ at91_rtc_write(AT91_RTC_TIMR,
bin2bcd(tm->tm_sec) << 0
| bin2bcd(tm->tm_min) << 8
| bin2bcd(tm->tm_hour) << 16);
- at91_sys_write(AT91_RTC_CALR,
+ at91_rtc_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_mday) << 24);
/* Restart Time/Calendar */
- cr = at91_sys_read(AT91_RTC_CR);
- at91_sys_write(AT91_RTC_CR, cr & ~(AT91_RTC_UPDCAL | AT91_RTC_UPDTIM));
+ cr = at91_rtc_read(AT91_RTC_CR);
+ at91_rtc_write(AT91_RTC_CR, cr & ~(AT91_RTC_UPDCAL | AT91_RTC_UPDTIM));
return 0;
}
tm->tm_yday = rtc_year_days(tm->tm_mday, tm->tm_mon, tm->tm_year);
tm->tm_year = at91_alarm_year - 1900;
- alrm->enabled = (at91_sys_read(AT91_RTC_IMR) & AT91_RTC_ALARM)
+ alrm->enabled = (at91_rtc_read(AT91_RTC_IMR) & AT91_RTC_ALARM)
? 1 : 0;
pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
tm.tm_min = alrm->time.tm_min;
tm.tm_sec = alrm->time.tm_sec;
- at91_sys_write(AT91_RTC_IDR, AT91_RTC_ALARM);
- at91_sys_write(AT91_RTC_TIMALR,
+ at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM);
+ at91_rtc_write(AT91_RTC_TIMALR,
bin2bcd(tm.tm_sec) << 0
| bin2bcd(tm.tm_min) << 8
| bin2bcd(tm.tm_hour) << 16
| AT91_RTC_HOUREN | AT91_RTC_MINEN | AT91_RTC_SECEN);
- at91_sys_write(AT91_RTC_CALALR,
+ at91_rtc_write(AT91_RTC_CALALR,
bin2bcd(tm.tm_mon + 1) << 16 /* tm_mon starts at zero */
| bin2bcd(tm.tm_mday) << 24
| AT91_RTC_DATEEN | AT91_RTC_MTHEN);
if (alrm->enabled) {
- at91_sys_write(AT91_RTC_SCCR, AT91_RTC_ALARM);
- at91_sys_write(AT91_RTC_IER, AT91_RTC_ALARM);
+ at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM);
+ at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM);
}
pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
pr_debug("%s(): cmd=%08x\n", __func__, enabled);
if (enabled) {
- at91_sys_write(AT91_RTC_SCCR, AT91_RTC_ALARM);
- at91_sys_write(AT91_RTC_IER, AT91_RTC_ALARM);
+ at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM);
+ at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM);
} else
- at91_sys_write(AT91_RTC_IDR, AT91_RTC_ALARM);
+ at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM);
return 0;
}
*/
static int at91_rtc_proc(struct device *dev, struct seq_file *seq)
{
- unsigned long imr = at91_sys_read(AT91_RTC_IMR);
+ unsigned long imr = at91_rtc_read(AT91_RTC_IMR);
seq_printf(seq, "update_IRQ\t: %s\n",
(imr & AT91_RTC_ACKUPD) ? "yes" : "no");
unsigned int rtsr;
unsigned long events = 0;
- rtsr = at91_sys_read(AT91_RTC_SR) & at91_sys_read(AT91_RTC_IMR);
+ rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_read(AT91_RTC_IMR);
if (rtsr) { /* this interrupt is shared! Is it ours? */
if (rtsr & AT91_RTC_ALARM)
events |= (RTC_AF | RTC_IRQF);
if (rtsr & AT91_RTC_ACKUPD)
complete(&at91_rtc_updated);
- at91_sys_write(AT91_RTC_SCCR, rtsr); /* clear status reg */
+ at91_rtc_write(AT91_RTC_SCCR, rtsr); /* clear status reg */
rtc_update_irq(rtc, 1, events);
static int __init at91_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc;
- int ret;
+ struct resource *regs;
+ int ret = 0;
- at91_sys_write(AT91_RTC_CR, 0);
- at91_sys_write(AT91_RTC_MR, 0); /* 24 hour mode */
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ dev_err(&pdev->dev, "no mmio resource defined\n");
+ return -ENXIO;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "no irq resource defined\n");
+ return -ENXIO;
+ }
+
+ at91_rtc_regs = ioremap(regs->start, resource_size(regs));
+ if (!at91_rtc_regs) {
+ dev_err(&pdev->dev, "failed to map registers, aborting.\n");
+ return -ENOMEM;
+ }
+
+ at91_rtc_write(AT91_RTC_CR, 0);
+ at91_rtc_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_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,
+ ret = request_irq(irq, at91_rtc_interrupt,
IRQF_SHARED,
"at91_rtc", pdev);
if (ret) {
printk(KERN_ERR "at91_rtc: IRQ %d already in use.\n",
- AT91_ID_SYS);
+ irq);
return ret;
}
rtc = rtc_device_register(pdev->name, &pdev->dev,
&at91_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
- free_irq(AT91_ID_SYS, pdev);
+ free_irq(irq, pdev);
return PTR_ERR(rtc);
}
platform_set_drvdata(pdev, rtc);
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_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);
+ free_irq(irq, pdev);
rtc_device_unregister(rtc);
platform_set_drvdata(pdev, NULL);
/* this IRQ is shared with DBGU and other hardware which isn't
* necessarily doing PM like we are...
*/
- at91_rtc_imr = at91_sys_read(AT91_RTC_IMR)
+ at91_rtc_imr = at91_rtc_read(AT91_RTC_IMR)
& (AT91_RTC_ALARM|AT91_RTC_SECEV);
if (at91_rtc_imr) {
if (device_may_wakeup(dev))
- enable_irq_wake(AT91_ID_SYS);
+ enable_irq_wake(irq);
else
- at91_sys_write(AT91_RTC_IDR, at91_rtc_imr);
+ at91_rtc_write(AT91_RTC_IDR, at91_rtc_imr);
}
return 0;
}
{
if (at91_rtc_imr) {
if (device_may_wakeup(dev))
- disable_irq_wake(AT91_ID_SYS);
+ disable_irq_wake(irq);
else
- at91_sys_write(AT91_RTC_IER, at91_rtc_imr);
+ at91_rtc_write(AT91_RTC_IER, at91_rtc_imr);
}
return 0;
}
projects / deliverable / linux.git / commitdiff
