diff options
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-sh.c | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c index aeff25111979..21e7435daecb 100644 --- a/drivers/rtc/rtc-sh.c +++ b/drivers/rtc/rtc-sh.c @@ -319,6 +319,25 @@ static int sh_rtc_proc(struct device *dev, struct seq_file *seq) return 0; } +static inline void sh_rtc_setcie(struct device *dev, unsigned int enable) +{ + struct sh_rtc *rtc = dev_get_drvdata(dev); + unsigned int tmp; + + spin_lock_irq(&rtc->lock); + + tmp = readb(rtc->regbase + RCR1); + + if (!enable) + tmp &= ~RCR1_CIE; + else + tmp |= RCR1_CIE; + + writeb(tmp, rtc->regbase + RCR1); + + spin_unlock_irq(&rtc->lock); +} + static int sh_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { struct sh_rtc *rtc = dev_get_drvdata(dev); @@ -335,9 +354,11 @@ static int sh_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) break; case RTC_UIE_OFF: rtc->periodic_freq &= ~PF_OXS; + sh_rtc_setcie(dev, 0); break; case RTC_UIE_ON: rtc->periodic_freq |= PF_OXS; + sh_rtc_setcie(dev, 1); break; case RTC_IRQP_READ: ret = put_user(rtc->rtc_dev->irq_freq, @@ -400,6 +421,10 @@ static int sh_rtc_read_time(struct device *dev, struct rtc_time *tm) tm->tm_sec--; #endif + /* only keep the carry interrupt enabled if UIE is on */ + if (!(rtc->periodic_freq & PF_OXS)) + sh_rtc_setcie(dev, 0); + dev_dbg(dev, "%s: tm is secs=%d, mins=%d, hours=%d, " "mday=%d, mon=%d, year=%d, wday=%d\n", __func__, @@ -616,7 +641,6 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev) { struct sh_rtc *rtc; struct resource *res; - unsigned int tmp; int ret; rtc = kzalloc(sizeof(struct sh_rtc), GFP_KERNEL); @@ -676,8 +700,6 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev) } rtc->rtc_dev->max_user_freq = 256; - rtc->rtc_dev->irq_freq = 1; - rtc->periodic_freq = 0x60; platform_set_drvdata(pdev, rtc); @@ -724,11 +746,12 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev) } } - tmp = readb(rtc->regbase + RCR1); - tmp &= ~RCR1_CF; - tmp |= RCR1_CIE; - writeb(tmp, rtc->regbase + RCR1); - + /* everything disabled by default */ + rtc->periodic_freq = 0; + rtc->rtc_dev->irq_freq = 0; + sh_rtc_setpie(&pdev->dev, 0); + sh_rtc_setaie(&pdev->dev, 0); + sh_rtc_setcie(&pdev->dev, 0); return 0; err_unmap: @@ -750,6 +773,7 @@ static int __devexit sh_rtc_remove(struct platform_device *pdev) sh_rtc_setpie(&pdev->dev, 0); sh_rtc_setaie(&pdev->dev, 0); + sh_rtc_setcie(&pdev->dev, 0); free_irq(rtc->periodic_irq, rtc); if (rtc->carry_irq > 0) { |