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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>
This commit is contained in:
Alexandre Belloni 2020-05-11 16:03:35 +02:00
parent 040e6dc091
commit 7d65cf8c1f
1 changed files with 12 additions and 4 deletions
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16
drivers/rtc/rtc-pcf2127.c
View File

@ -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) {