diff options
| author | Werner Almesberger <werner@openmoko.org> | 2009-01-30 14:37:40 +0000 |
|---|---|---|
| committer | Andy Green <agreen@octopus.localdomain> | 2009-01-30 14:37:40 +0000 |
| commit | c3e4e22fb0c3e1d82f66e67f6592949e48f3995a (patch) | |
| tree | e6ffceea1bde41a1afde8d5ea4ca09fb7d08ec61 /drivers/rtc | |
| parent | cbbf3eb480c756be8acbe7368ccff81be1999559 (diff) | |
manage RTC alarm "pending" flag of PCF50633
This patch adds setting and clearing of the "pending" flag of the
RTC alarm. The semantics follow the UEFI specification 2.2 available
at http://www.uefi.org/specs/, i.e., the "pending" flag is cleared
by disabling the alarm, but not by any other condition (such as the
passing of time, a successful wakeup, or setting of a new alarm.)
Signed-off-by: Werner Almesberger <werner@openmoko.org>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-pcf50633.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-pcf50633.c b/drivers/rtc/rtc-pcf50633.c index 0d6b0061b92..1013634d196 100644 --- a/drivers/rtc/rtc-pcf50633.c +++ b/drivers/rtc/rtc-pcf50633.c @@ -58,6 +58,7 @@ struct pcf50633_time { struct pcf50633_rtc { int alarm_enabled; int second_enabled; + int alarm_pending; struct pcf50633 *pcf; struct rtc_device *rtc_dev; @@ -209,6 +210,7 @@ static int pcf50633_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) rtc = dev_get_drvdata(dev); alrm->enabled = rtc->alarm_enabled; + alrm->pending = rtc->alarm_pending; ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSCA, PCF50633_TI_EXTENT, &pcf_tm.time[0]); @@ -244,6 +246,8 @@ static int pcf50633_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) /* Returns 0 on success */ ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSCA, PCF50633_TI_EXTENT, &pcf_tm.time[0]); + if (!alrm->enabled) + rtc->alarm_pending = 0; if (!alarm_masked || alrm->enabled) pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM); @@ -268,6 +272,7 @@ static void pcf50633_rtc_irq(int irq, void *data) switch (irq) { case PCF50633_IRQ_ALARM: rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF); + rtc->alarm_pending = 1; break; case PCF50633_IRQ_SECOND: rtc_update_irq(rtc->rtc_dev, 1, RTC_UF | RTC_IRQF); |