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authorAlexandre Belloni <alexandre.belloni@bootlin.com>2020-11-18 00:22:01 +0300
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2020-11-19 14:46:39 +0300
commit7d9d4868ec0b34dbfc74b3075dc1e896cc98f783 (patch)
treed82f53b3c813b58dcd6fd056bc4d56c3e6f87ae7 /drivers/rtc
parentba7aa63000f26c5a2c87d5a716601499a02a3156 (diff)
downloadlinux-7d9d4868ec0b34dbfc74b3075dc1e896cc98f783.tar.xz
rtc: sc27xx: Always read normal alarm
The RTC core only reads the alarm from the hardware at boot time, to know whether an alarm was already set before booting. It keeps track of all the alarms after that so there is no need to ever read the auxiliary alarm. Commit 3822d1bb0df1 ("rtc: sc27xx: Always read normal alarm when registering RTC device") already effectively removed the capability to read the auxiliary alarm as .read_alarm is always called with rtc->registered set to false. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Reviewed-by: Chunyan Zhang <zhang.lyra@gmail.com> Link: https://lore.kernel.org/r/20201117212201.1288608-1-alexandre.belloni@bootlin.com
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-sc27xx.c38
1 files changed, 2 insertions, 36 deletions
diff --git a/drivers/rtc/rtc-sc27xx.c b/drivers/rtc/rtc-sc27xx.c
index 6e65f68ea86d..a953bc0a5a5b 100644
--- a/drivers/rtc/rtc-sc27xx.c
+++ b/drivers/rtc/rtc-sc27xx.c
@@ -299,33 +299,6 @@ static int sprd_rtc_set_secs(struct sprd_rtc *rtc, enum sprd_rtc_reg_types type,
sts_mask);
}
-static int sprd_rtc_read_aux_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
- struct sprd_rtc *rtc = dev_get_drvdata(dev);
- time64_t secs;
- u32 val;
- int ret;
-
- ret = sprd_rtc_get_secs(rtc, SPRD_RTC_AUX_ALARM, &secs);
- if (ret)
- return ret;
-
- rtc_time64_to_tm(secs, &alrm->time);
-
- ret = regmap_read(rtc->regmap, rtc->base + SPRD_RTC_INT_EN, &val);
- if (ret)
- return ret;
-
- alrm->enabled = !!(val & SPRD_RTC_AUXALM_EN);
-
- ret = regmap_read(rtc->regmap, rtc->base + SPRD_RTC_INT_RAW_STS, &val);
- if (ret)
- return ret;
-
- alrm->pending = !!(val & SPRD_RTC_AUXALM_EN);
- return 0;
-}
-
static int sprd_rtc_set_aux_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct sprd_rtc *rtc = dev_get_drvdata(dev);
@@ -415,16 +388,9 @@ static int sprd_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
u32 val;
/*
- * Before RTC device is registered, it will check to see if there is an
- * alarm already set in RTC hardware, and we always read the normal
- * alarm at this time.
- *
- * Or if aie_timer is enabled, we should get the normal alarm time.
- * Otherwise we should get auxiliary alarm time.
+ * The RTC core checks to see if there is an alarm already set in RTC
+ * hardware, and we always read the normal alarm at this time.
*/
- if (rtc->rtc && rtc->rtc->registered && rtc->rtc->aie_timer.enabled == 0)
- return sprd_rtc_read_aux_alarm(dev, alrm);
-
ret = sprd_rtc_get_secs(rtc, SPRD_RTC_ALARM, &secs);
if (ret)
return ret;