linux-kernel - [PATCH 22/29] rtc: add new RTC_FEATURE_ALARM_WAKEUP

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Message-Id: <20220309162301.61679-22-alexandre.belloni@bootlin.com>
Date:   Wed,  9 Mar 2022 17:22:53 +0100
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 22/29] rtc: add new RTC_FEATURE_ALARM_WAKEUP_ONLY feature

Some RTCs have an IRQ pin that is not connected to a CPU interrupt but
rather directly to a PMIC or power supply. In that case, it is still useful
to be able to set alarms but we shouldn't expect interrupts.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 include/uapi/linux/rtc.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/rtc.h b/include/uapi/linux/rtc.h
index 03e5b776e597..97aca4503a6a 100644
--- a/include/uapi/linux/rtc.h
+++ b/include/uapi/linux/rtc.h
@@ -133,7 +133,8 @@ struct rtc_param {
 #define RTC_FEATURE_UPDATE_INTERRUPT	4
 #define RTC_FEATURE_CORRECTION		5
 #define RTC_FEATURE_BACKUP_SWITCH_MODE	6
-#define RTC_FEATURE_CNT			7
+#define RTC_FEATURE_ALARM_WAKEUP_ONLY	7
+#define RTC_FEATURE_CNT			8
 
 /* parameter list */
 #define RTC_PARAM_FEATURES		0
-- 
2.35.1