From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: linux-rtc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Subject: [PATCH v2] rtc: pcf2127: report battery switch over
Date: Mon, 11 May 2020 16:03:35 +0200 [thread overview]
Message-ID: <20200511140335.799133-1-alexandre.belloni@bootlin.com> (raw)
Add support for the RTC_VL_BACKUP_SWITCH flag to report battery switch over
events.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
drivers/rtc/rtc-pcf2127.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index 039078029bd4..e5e3cd128476 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -188,18 +188,27 @@ static int pcf2127_rtc_ioctl(struct device *dev,
unsigned int cmd, unsigned long arg)
{
struct pcf2127 *pcf2127 = dev_get_drvdata(dev);
- int touser;
+ int val, touser = 0;
int ret;
switch (cmd) {
case RTC_VL_READ:
- ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL3, &touser);
+ ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL3, &val);
if (ret)
return ret;
- touser = touser & PCF2127_BIT_CTRL3_BLF ? RTC_VL_BACKUP_LOW : 0;
+ if (val & PCF2127_BIT_CTRL3_BLF)
+ touser |= RTC_VL_BACKUP_LOW;
+
+ if (val & PCF2127_BIT_CTRL3_BF)
+ touser |= RTC_VL_BACKUP_SWITCH;
return put_user(touser, (unsigned int __user *)arg);
+
+ case RTC_VL_CLR:
+ return regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL3,
+ PCF2127_BIT_CTRL3_BF, 0);
+
default:
return -ENOIOCTLCMD;
}
@@ -493,7 +502,6 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
*/
ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL3,
PCF2127_BIT_CTRL3_BTSE |
- PCF2127_BIT_CTRL3_BF |
PCF2127_BIT_CTRL3_BIE |
PCF2127_BIT_CTRL3_BLIE, 0);
if (ret) {
--
2.26.2
reply other threads:[~2020-05-11 14:03 UTC|newest]
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