Commit 9b5ef64a authored by Yoichi Yuasa's avatar Yoichi Yuasa Committed by Linus Torvalds

rtc: update vr41xx alarm handling

- vr41xx_rtc_read_alarm() reports alarm enabled.
- vr41xx_rtc_set_alarm() sets alarm disable/enable by rtc_wkalrm.enabled.
Signed-off-by: default avatarYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: default avatarAlessandro Zummo <a.zummo@towertech.it>
Acked-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 09a21e56
......@@ -97,6 +97,7 @@ static DEFINE_SPINLOCK(rtc_lock);
static char rtc_name[] = "RTC";
static unsigned long periodic_frequency;
static unsigned long periodic_count;
static unsigned int alarm_enabled;
struct resource rtc_resource[2] = {
{ .name = rtc_name,
......@@ -188,6 +189,7 @@ static int vr41xx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
low = rtc1_read(ECMPLREG);
mid = rtc1_read(ECMPMREG);
high = rtc1_read(ECMPHREG);
wkalrm->enabled = alarm_enabled;
spin_unlock_irq(&rtc_lock);
......@@ -206,10 +208,18 @@ static int vr41xx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
spin_lock_irq(&rtc_lock);
if (alarm_enabled)
disable_irq(ELAPSEDTIME_IRQ);
rtc1_write(ECMPLREG, (uint16_t)(alarm_sec << 15));
rtc1_write(ECMPMREG, (uint16_t)(alarm_sec >> 1));
rtc1_write(ECMPHREG, (uint16_t)(alarm_sec >> 17));
if (wkalrm->enabled)
enable_irq(ELAPSEDTIME_IRQ);
alarm_enabled = wkalrm->enabled;
spin_unlock_irq(&rtc_lock);
return 0;
......@@ -221,10 +231,24 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long
switch (cmd) {
case RTC_AIE_ON:
enable_irq(ELAPSEDTIME_IRQ);
spin_lock_irq(&rtc_lock);
if (!alarm_enabled) {
enable_irq(ELAPSEDTIME_IRQ);
alarm_enabled = 1;
}
spin_unlock_irq(&rtc_lock);
break;
case RTC_AIE_OFF:
disable_irq(ELAPSEDTIME_IRQ);
spin_lock_irq(&rtc_lock);
if (alarm_enabled) {
disable_irq(ELAPSEDTIME_IRQ);
alarm_enabled = 0;
}
spin_unlock_irq(&rtc_lock);
break;
case RTC_PIE_ON:
enable_irq(RTCLONG1_IRQ);
......
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