From 3f929cad943380370b6db31fcb7a38d898d91089 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
Date: Fri, 25 Jan 2019 15:35:58 +0100
Subject: [PATCH] rtc: ds1307: rx8130: Fix alarm handling
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Git-commit: 3f929cad943380370b6db31fcb7a38d898d91089
Patch-mainline: v5.1-rc1
References: bsc#1111666
When the EXTENSION.WADA bit is set, register 0x19 contains a bitmap of
week days, not a day of month. As Linux only handles a single alarm
without repetition using day of month is more flexible, so clear this
bit. (Otherwise a value depending on time.tm_wday would have to be
written to register 0x19.)
Also optimize setting the AIE bit to use a single register write instead
of a bulk write of three registers.
Fixes: ee0981be7704 ("rtc: ds1307: Add support for Epson RX8130CE")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/rtc/rtc-ds1307.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 974eafda9de4..07530fe1da2a 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -554,8 +554,8 @@ static int rx8130_set_alarm(struct device *dev, struct rtc_wkalrm *t)
if (ret < 0)
return ret;
- ctl[0] &= ~RX8130_REG_EXTENSION_WADA;
- ctl[1] |= RX8130_REG_FLAG_AF;
+ ctl[0] &= RX8130_REG_EXTENSION_WADA;
+ ctl[1] &= ~RX8130_REG_FLAG_AF;
ctl[2] &= ~RX8130_REG_CONTROL0_AIE;
ret = regmap_bulk_write(ds1307->regmap, RX8130_REG_EXTENSION, ctl,
@@ -578,8 +578,7 @@ static int rx8130_set_alarm(struct device *dev, struct rtc_wkalrm *t)
ctl[2] |= RX8130_REG_CONTROL0_AIE;
- return regmap_bulk_write(ds1307->regmap, RX8130_REG_EXTENSION, ctl,
- sizeof(ctl));
+ return regmap_write(ds1307->regmap, RX8130_REG_CONTROL0, ctl[2]);
}
static int rx8130_alarm_irq_enable(struct device *dev, unsigned int enabled)
--
2.16.4