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
2021-10-18 17:20:50 +02:00
parent 6a8af1b656
commit 2268551935
2 changed files with 5 additions and 1 deletions
@@ -131,7 +131,8 @@ struct rtc_param {
 #define RTC_FEATURE_NEED_WEEK_DAY	2
 #define RTC_FEATURE_ALARM_RES_2S	3
 #define RTC_FEATURE_UPDATE_INTERRUPT	4
-#define RTC_FEATURE_CNT			5
+#define RTC_FEATURE_CORRECTION		5
+#define RTC_FEATURE_CNT			6

 /* parameter list */
 #define RTC_PARAM_FEATURES		0