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    Subject[PATCH 5/5] rtc: pcf2127: report battery switch over
    Date
    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..967de68e1b03 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
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