Cut down the shutdown time from 2 seconds to 1 sec. In case of roll
over try again.
Signed-off-by: Keerthy <j-keerthy@xxxxxx>
---
Changes in v4:
* Fixed a compilation issue.
* Extended the roll over check post interrupt programming.
drivers/rtc/rtc-omap.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 323ff55..88da927 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -435,17 +435,23 @@ static void omap_rtc_power_off(void)
struct rtc_time tm;
unsigned long now;
u32 val;
+ int seconds;
rtc->type->unlock(rtc);
/* enable pmic_power_en control */
val = rtc_readl(rtc, OMAP_RTC_PMIC_REG);
rtc_writel(rtc, OMAP_RTC_PMIC_REG, val | OMAP_RTC_PMIC_POWER_EN_EN);
- /* set alarm two seconds from now */
+again:
+ /* Clear any existing ALARM2 event */
+ rtc_writel(rtc, OMAP_RTC_STATUS_REG, OMAP_RTC_STATUS_ALARM2);
+
+ /* set alarm one second from now */
omap_rtc_read_time_raw(rtc, &tm);
+ seconds = tm.tm_sec;
bcd2tm(&tm);
rtc_tm_to_time(&tm, &now);
- rtc_time_to_tm(now + 2, &tm);
+ rtc_time_to_tm(now + 1, &tm);
if (tm2bcd(&tm) < 0) {
dev_err(&rtc->rtc->dev, "power off failed\n");
@@ -470,6 +476,9 @@ static void omap_rtc_power_off(void)
val = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
rtc_writel(rtc, OMAP_RTC_INTERRUPTS_REG,
val | OMAP_RTC_INTERRUPTS_IT_ALARM2);
+ /* Our calculations started right before the rollover, try again */
+ if (seconds != rtc_read(omap_rtc_power_off_rtc, OMAP_RTC_SECONDS_REG))
+ goto again;
rtc->type->lock(rtc);
/*
--
1.9.1
--
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