#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/clk.h>
+#include <linux/log2.h>
-#include <asm/hardware.h>
+#include <mach/hardware.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/irq.h>
-#include <asm/rtc.h>
-
-#include <asm/mach/time.h>
-
-#include <asm/arch/regs-rtc.h>
+#include <plat/regs-rtc.h>
/* I have yet to find an S3C implementation with more than one
* of these rtc blocks in */
static void __iomem *s3c_rtc_base;
static int s3c_rtc_alarmno = NO_IRQ;
static int s3c_rtc_tickno = NO_IRQ;
-static int s3c_rtc_freq = 1;
static DEFINE_SPINLOCK(s3c_rtc_pie_lock);
-static unsigned int tick_count;
/* IRQ Handlers */
{
struct rtc_device *rdev = id;
- rtc_update_irq(&rdev->class_dev, 1, RTC_AF | RTC_IRQF);
+ rtc_update_irq(rdev, 1, RTC_AF | RTC_IRQF);
return IRQ_HANDLED;
}
{
struct rtc_device *rdev = id;
- rtc_update_irq(&rdev->class_dev, tick_count++, RTC_PF | RTC_IRQF);
+ rtc_update_irq(rdev, 1, RTC_PF | RTC_IRQF);
return IRQ_HANDLED;
}
{
unsigned int tmp;
- pr_debug("%s: aie=%d\n", __FUNCTION__, to);
+ pr_debug("%s: aie=%d\n", __func__, to);
tmp = readb(s3c_rtc_base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
writeb(tmp, s3c_rtc_base + S3C2410_RTCALM);
}
-static void s3c_rtc_setpie(int to)
+static int s3c_rtc_setpie(struct device *dev, int enabled)
{
unsigned int tmp;
- pr_debug("%s: pie=%d\n", __FUNCTION__, to);
+ pr_debug("%s: pie=%d\n", __func__, enabled);
spin_lock_irq(&s3c_rtc_pie_lock);
tmp = readb(s3c_rtc_base + S3C2410_TICNT) & ~S3C2410_TICNT_ENABLE;
- if (to)
+ if (enabled)
tmp |= S3C2410_TICNT_ENABLE;
writeb(tmp, s3c_rtc_base + S3C2410_TICNT);
spin_unlock_irq(&s3c_rtc_pie_lock);
+
+ return 0;
}
-static void s3c_rtc_setfreq(int freq)
+static int s3c_rtc_setfreq(struct device *dev, int freq)
{
unsigned int tmp;
- spin_lock_irq(&s3c_rtc_pie_lock);
- tmp = readb(s3c_rtc_base + S3C2410_TICNT) & S3C2410_TICNT_ENABLE;
+ if (!is_power_of_2(freq))
+ return -EINVAL;
- s3c_rtc_freq = freq;
+ spin_lock_irq(&s3c_rtc_pie_lock);
+ tmp = readb(s3c_rtc_base + S3C2410_TICNT) & S3C2410_TICNT_ENABLE;
tmp |= (128 / freq)-1;
writeb(tmp, s3c_rtc_base + S3C2410_TICNT);
spin_unlock_irq(&s3c_rtc_pie_lock);
+
+ return 0;
}
/* Time read/write */
rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday,
rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec);
- BCD_TO_BIN(rtc_tm->tm_sec);
- BCD_TO_BIN(rtc_tm->tm_min);
- BCD_TO_BIN(rtc_tm->tm_hour);
- BCD_TO_BIN(rtc_tm->tm_mday);
- BCD_TO_BIN(rtc_tm->tm_mon);
- BCD_TO_BIN(rtc_tm->tm_year);
+ rtc_tm->tm_sec = bcd2bin(rtc_tm->tm_sec);
+ rtc_tm->tm_min = bcd2bin(rtc_tm->tm_min);
+ rtc_tm->tm_hour = bcd2bin(rtc_tm->tm_hour);
+ rtc_tm->tm_mday = bcd2bin(rtc_tm->tm_mday);
+ rtc_tm->tm_mon = bcd2bin(rtc_tm->tm_mon);
+ rtc_tm->tm_year = bcd2bin(rtc_tm->tm_year);
rtc_tm->tm_year += 100;
rtc_tm->tm_mon -= 1;
return -EINVAL;
}
- writeb(BIN2BCD(tm->tm_sec), base + S3C2410_RTCSEC);
- writeb(BIN2BCD(tm->tm_min), base + S3C2410_RTCMIN);
- writeb(BIN2BCD(tm->tm_hour), base + S3C2410_RTCHOUR);
- writeb(BIN2BCD(tm->tm_mday), base + S3C2410_RTCDATE);
- writeb(BIN2BCD(tm->tm_mon + 1), base + S3C2410_RTCMON);
- writeb(BIN2BCD(year), base + S3C2410_RTCYEAR);
+ writeb(bin2bcd(tm->tm_sec), base + S3C2410_RTCSEC);
+ writeb(bin2bcd(tm->tm_min), base + S3C2410_RTCMIN);
+ writeb(bin2bcd(tm->tm_hour), base + S3C2410_RTCHOUR);
+ writeb(bin2bcd(tm->tm_mday), base + S3C2410_RTCDATE);
+ writeb(bin2bcd(tm->tm_mon + 1), base + S3C2410_RTCMON);
+ writeb(bin2bcd(year), base + S3C2410_RTCYEAR);
return 0;
}
/* decode the alarm enable field */
if (alm_en & S3C2410_RTCALM_SECEN)
- BCD_TO_BIN(alm_tm->tm_sec);
+ alm_tm->tm_sec = bcd2bin(alm_tm->tm_sec);
else
alm_tm->tm_sec = 0xff;
if (alm_en & S3C2410_RTCALM_MINEN)
- BCD_TO_BIN(alm_tm->tm_min);
+ alm_tm->tm_min = bcd2bin(alm_tm->tm_min);
else
alm_tm->tm_min = 0xff;
if (alm_en & S3C2410_RTCALM_HOUREN)
- BCD_TO_BIN(alm_tm->tm_hour);
+ alm_tm->tm_hour = bcd2bin(alm_tm->tm_hour);
else
alm_tm->tm_hour = 0xff;
if (alm_en & S3C2410_RTCALM_DAYEN)
- BCD_TO_BIN(alm_tm->tm_mday);
+ alm_tm->tm_mday = bcd2bin(alm_tm->tm_mday);
else
alm_tm->tm_mday = 0xff;
if (alm_en & S3C2410_RTCALM_MONEN) {
- BCD_TO_BIN(alm_tm->tm_mon);
+ alm_tm->tm_mon = bcd2bin(alm_tm->tm_mon);
alm_tm->tm_mon -= 1;
} else {
alm_tm->tm_mon = 0xff;
}
if (alm_en & S3C2410_RTCALM_YEAREN)
- BCD_TO_BIN(alm_tm->tm_year);
+ alm_tm->tm_year = bcd2bin(alm_tm->tm_year);
else
alm_tm->tm_year = 0xffff;
if (tm->tm_sec < 60 && tm->tm_sec >= 0) {
alrm_en |= S3C2410_RTCALM_SECEN;
- writeb(BIN2BCD(tm->tm_sec), base + S3C2410_ALMSEC);
+ writeb(bin2bcd(tm->tm_sec), base + S3C2410_ALMSEC);
}
if (tm->tm_min < 60 && tm->tm_min >= 0) {
alrm_en |= S3C2410_RTCALM_MINEN;
- writeb(BIN2BCD(tm->tm_min), base + S3C2410_ALMMIN);
+ writeb(bin2bcd(tm->tm_min), base + S3C2410_ALMMIN);
}
if (tm->tm_hour < 24 && tm->tm_hour >= 0) {
alrm_en |= S3C2410_RTCALM_HOUREN;
- writeb(BIN2BCD(tm->tm_hour), base + S3C2410_ALMHOUR);
+ writeb(bin2bcd(tm->tm_hour), base + S3C2410_ALMHOUR);
}
pr_debug("setting S3C2410_RTCALM to %08x\n", alrm_en);
writeb(alrm_en, base + S3C2410_RTCALM);
- if (0) {
- alrm_en = readb(base + S3C2410_RTCALM);
- alrm_en &= ~S3C2410_RTCALM_ALMEN;
- writeb(alrm_en, base + S3C2410_RTCALM);
- disable_irq_wake(s3c_rtc_alarmno);
- }
+ s3c_rtc_setaie(alrm->enabled);
if (alrm->enabled)
enable_irq_wake(s3c_rtc_alarmno);
return 0;
}
-static int s3c_rtc_ioctl(struct device *dev,
- unsigned int cmd, unsigned long arg)
-{
- unsigned int ret = -ENOIOCTLCMD;
-
- switch (cmd) {
- case RTC_AIE_OFF:
- case RTC_AIE_ON:
- s3c_rtc_setaie((cmd == RTC_AIE_ON) ? 1 : 0);
- ret = 0;
- break;
-
- case RTC_PIE_OFF:
- case RTC_PIE_ON:
- tick_count = 0;
- s3c_rtc_setpie((cmd == RTC_PIE_ON) ? 1 : 0);
- ret = 0;
- break;
-
- case RTC_IRQP_READ:
- ret = put_user(s3c_rtc_freq, (unsigned long __user *)arg);
- break;
-
- case RTC_IRQP_SET:
- /* check for power of 2 */
-
- if ((arg & (arg-1)) != 0 || arg < 1) {
- ret = -EINVAL;
- goto exit;
- }
-
- pr_debug("s3c2410_rtc: setting frequency %ld\n", arg);
-
- s3c_rtc_setfreq(arg);
- ret = 0;
- break;
-
- case RTC_UIE_ON:
- case RTC_UIE_OFF:
- ret = -EINVAL;
- }
-
- exit:
- return ret;
-}
-
static int s3c_rtc_proc(struct device *dev, struct seq_file *seq)
{
unsigned int ticnt = readb(s3c_rtc_base + S3C2410_TICNT);
seq_printf(seq, "periodic_IRQ\t: %s\n",
(ticnt & S3C2410_TICNT_ENABLE) ? "yes" : "no" );
-
- seq_printf(seq, "periodic_freq\t: %d\n", s3c_rtc_freq);
-
return 0;
}
int ret;
ret = request_irq(s3c_rtc_alarmno, s3c_rtc_alarmirq,
- SA_INTERRUPT, "s3c2410-rtc alarm", rtc_dev);
+ IRQF_DISABLED, "s3c2410-rtc alarm", rtc_dev);
if (ret) {
dev_err(dev, "IRQ%d error %d\n", s3c_rtc_alarmno, ret);
}
ret = request_irq(s3c_rtc_tickno, s3c_rtc_tickirq,
- SA_INTERRUPT, "s3c2410-rtc tick", rtc_dev);
+ IRQF_DISABLED, "s3c2410-rtc tick", rtc_dev);
if (ret) {
dev_err(dev, "IRQ%d error %d\n", s3c_rtc_tickno, ret);
/* do not clear AIE here, it may be needed for wake */
- s3c_rtc_setpie(0);
+ s3c_rtc_setpie(dev, 0);
free_irq(s3c_rtc_alarmno, rtc_dev);
free_irq(s3c_rtc_tickno, rtc_dev);
}
static const struct rtc_class_ops s3c_rtcops = {
.open = s3c_rtc_open,
.release = s3c_rtc_release,
- .ioctl = s3c_rtc_ioctl,
.read_time = s3c_rtc_gettime,
.set_time = s3c_rtc_settime,
.read_alarm = s3c_rtc_getalarm,
.set_alarm = s3c_rtc_setalarm,
+ .irq_set_freq = s3c_rtc_setfreq,
+ .irq_set_state = s3c_rtc_setpie,
.proc = s3c_rtc_proc,
};
}
}
-static int s3c_rtc_remove(struct platform_device *dev)
+static int __devexit s3c_rtc_remove(struct platform_device *dev)
{
struct rtc_device *rtc = platform_get_drvdata(dev);
platform_set_drvdata(dev, NULL);
rtc_device_unregister(rtc);
- s3c_rtc_setpie(0);
+ s3c_rtc_setpie(&dev->dev, 0);
s3c_rtc_setaie(0);
iounmap(s3c_rtc_base);
return 0;
}
-static int s3c_rtc_probe(struct platform_device *pdev)
+static int __devinit s3c_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc;
struct resource *res;
int ret;
- pr_debug("%s: probe=%p\n", __FUNCTION__, pdev);
+ pr_debug("%s: probe=%p\n", __func__, pdev);
/* find the IRQs */
pr_debug("s3c2410_rtc: RTCCON=%02x\n",
readb(s3c_rtc_base + S3C2410_RTCCON));
- s3c_rtc_setfreq(s3c_rtc_freq);
+ s3c_rtc_setfreq(&pdev->dev, 1);
+
+ device_init_wakeup(&pdev->dev, 1);
/* register RTC and exit */
/* RTC Power management control */
-static struct timespec s3c_rtc_delta;
-
static int ticnt_save;
static int s3c_rtc_suspend(struct platform_device *pdev, pm_message_t state)
{
- struct rtc_time tm;
- struct timespec time;
-
- time.tv_nsec = 0;
-
/* save TICNT for anyone using periodic interrupts */
-
ticnt_save = readb(s3c_rtc_base + S3C2410_TICNT);
-
- /* calculate time delta for suspend */
-
- s3c_rtc_gettime(&pdev->dev, &tm);
- rtc_tm_to_time(&tm, &time.tv_sec);
- save_time_delta(&s3c_rtc_delta, &time);
s3c_rtc_enable(pdev, 0);
-
return 0;
}
static int s3c_rtc_resume(struct platform_device *pdev)
{
- struct rtc_time tm;
- struct timespec time;
-
- time.tv_nsec = 0;
-
s3c_rtc_enable(pdev, 1);
- s3c_rtc_gettime(&pdev->dev, &tm);
- rtc_tm_to_time(&tm, &time.tv_sec);
- restore_time_delta(&s3c_rtc_delta, &time);
-
writeb(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
return 0;
}
#define s3c_rtc_resume NULL
#endif
-static struct platform_driver s3c2410_rtcdrv = {
+static struct platform_driver s3c2410_rtc_driver = {
.probe = s3c_rtc_probe,
- .remove = s3c_rtc_remove,
+ .remove = __devexit_p(s3c_rtc_remove),
.suspend = s3c_rtc_suspend,
.resume = s3c_rtc_resume,
.driver = {
static int __init s3c_rtc_init(void)
{
printk(banner);
- return platform_driver_register(&s3c2410_rtcdrv);
+ return platform_driver_register(&s3c2410_rtc_driver);
}
static void __exit s3c_rtc_exit(void)
{
- platform_driver_unregister(&s3c2410_rtcdrv);
+ platform_driver_unregister(&s3c2410_rtc_driver);
}
module_init(s3c_rtc_init);
MODULE_DESCRIPTION("Samsung S3C RTC Driver");
MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:s3c2410-rtc");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff