diff options
| author | Werner Almesberger <werner@openmoko.org> | 2009-10-06 02:02:09 +0400 |
|---|---|---|
| committer | Paul Fertser <fercerpav@gmail.com> | 2009-10-07 19:06:59 +0400 |
| commit | 13cf28420add5afe68feb59dde5ef2f3c512cb17 (patch) | |
| tree | 17c15bbd514e3b49f264fbff236cd18b999f2df8 /drivers/rtc | |
| parent | f1763f03f915a694754c8b618ed29193c67b71e8 (diff) | |
rtc: pcf50633: manage RTC alarm "pending" flag
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>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
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 33a10c47260..8669815a17b 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); |