diff options
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-s3c.c | 83 |
1 files changed, 16 insertions, 67 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index b81ba7020d92..54b1ebb01502 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -36,10 +36,8 @@ static struct resource *s3c_rtc_mem; 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 */ @@ -55,7 +53,7 @@ static irqreturn_t s3c_rtc_tickirq(int irq, void *id) { struct rtc_device *rdev = id; - rtc_update_irq(rdev, tick_count++, RTC_PF | RTC_IRQF); + rtc_update_irq(rdev, 1, RTC_PF | RTC_IRQF); return IRQ_HANDLED; } @@ -74,35 +72,37 @@ static void s3c_rtc_setaie(int to) 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", __func__, 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; - - s3c_rtc_freq = freq; + 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 */ @@ -267,12 +267,7 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) 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); @@ -282,59 +277,12 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) 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: - if (!is_power_of_2(arg)) { - 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; } @@ -374,7 +322,7 @@ static void s3c_rtc_release(struct device *dev) /* 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); } @@ -382,11 +330,12 @@ static void s3c_rtc_release(struct device *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, }; @@ -437,7 +386,7 @@ static int __devexit s3c_rtc_remove(struct platform_device *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); @@ -504,7 +453,7 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) 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); /* register RTC and exit */ |