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| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2021-10-18 17:19:29 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2021-10-18 17:20:50 +0200 |
| commit | 2268551935dbf1abcbb4d4fb7b1ad74dbe0d1be0 (patch) | |
| tree | f387d01196b4cf597ffd89c930725a4c46bd652d /drivers/rtc/class.c | |
| parent | 6a8af1b6568ad9ee08a419fb12c793f7992cf8a4 (diff) | |
| download | lwn-2268551935dbf1abcbb4d4fb7b1ad74dbe0d1be0.tar.gz lwn-2268551935dbf1abcbb4d4fb7b1ad74dbe0d1be0.zip | |
rtc: expose correction feature
Add a new feature for RTCs able to correct the oscillator imprecision. This
is also called offset or trimming. Such drivers have a .set_offset callback,
use that to set the feature bit from the core.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20211018151933.76865-4-alexandre.belloni@bootlin.com
Diffstat (limited to 'drivers/rtc/class.c')
| -rw-r--r-- | drivers/rtc/class.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index dbccd71589b9..2e0cbc190a8a 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -389,6 +389,9 @@ int __devm_rtc_register_device(struct module *owner, struct rtc_device *rtc) if (!rtc->ops->set_alarm) clear_bit(RTC_FEATURE_ALARM, rtc->features); + if (rtc->ops->set_offset) + set_bit(RTC_FEATURE_CORRECTION, rtc->features); + rtc->owner = owner; rtc_device_get_offset(rtc); |