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rtc: mt6397: fix alarm register overwrite

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Alarm registers high byte was reserved for other functions.
This add mask in alarm registers operation functions.
This also fix error condition in interrupt handler.

Fixes: fc2979118f ("rtc: mediatek: Add MT6397 RTC driver")

Signed-off-by: Ran Bi <ran.bi@mediatek.com>
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Link: https://lore.kernel.org/r/1576057435-3561-6-git-send-email-hsin-hsiung.wang@mediatek.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Ran Bi
2019-12-11 17:43:54 +08:00
committed by Alexandre Belloni
parent 111bf02b8f
commit 653997eeec
2 changed files with 33 additions and 14 deletions
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8
include/linux/mfd/mt6397/rtc.h
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@@ -46,6 +46,14 @@
#define RTC_AL_SEC 0x0018
#define RTC_AL_SEC_MASK 0x003f
#define RTC_AL_MIN_MASK 0x003f
#define RTC_AL_HOU_MASK 0x001f
#define RTC_AL_DOM_MASK 0x001f
#define RTC_AL_DOW_MASK 0x0007
#define RTC_AL_MTH_MASK 0x000f
#define RTC_AL_YEA_MASK 0x007f
#define RTC_PDN2 0x002e
#define RTC_PDN2_PWRON_ALARM BIT(4)