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| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2020-05-11 16:03:35 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2020-05-11 16:04:44 +0200 |
| commit | 7d65cf8c1f0ae59ef87e88067379188b46509538 (patch) | |
| tree | c2a03f7fa1e260a08a44fe618a4bc48349fa0a23 /drivers/rtc/rtc-pcf2127.c | |
| parent | 040e6dc0911c86add1ec3140432672e626b9d4ae (diff) | |
| download | linux-7d65cf8c1f0ae59ef87e88067379188b46509538.tar.gz | |
rtc: pcf2127: report battery switch over
Add support for the RTC_VL_BACKUP_SWITCH flag to report battery switch over
events.
Link: https://lore.kernel.org/r/20200511140335.799133-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/rtc-pcf2127.c')
| -rw-r--r-- | drivers/rtc/rtc-pcf2127.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c index 039078029bd42..e5e3cd128476b 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) { |