diff options
Diffstat (limited to 'drivers/rtc/rtc-rv3028.c')
| -rw-r--r-- | drivers/rtc/rtc-rv3028.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-rv3028.c b/drivers/rtc/rtc-rv3028.c index c2a531f0e125..874ebd4f6938 100644 --- a/drivers/rtc/rtc-rv3028.c +++ b/drivers/rtc/rtc-rv3028.c @@ -865,16 +865,17 @@ static const struct regmap_config regmap_config = { static u8 rv3028_set_trickle_charger(struct rv3028_data *rv3028, struct i2c_client *client) { - int ret, val_old, val; + int ret, val_old, val, val_mask; u32 ohms, chargeable; + u32 bsm; ret = regmap_read(rv3028->regmap, RV3028_BACKUP, &val_old); if (ret < 0) return ret; /* mask out only trickle charger bits */ - val_old = val_old & (RV3028_BACKUP_TCE | RV3028_BACKUP_TCR_MASK); - val = val_old; + val_mask = RV3028_BACKUP_TCE | RV3028_BACKUP_TCR_MASK; + val = val_old & val_mask; /* setup trickle charger */ if (!device_property_read_u32(&client->dev, "trickle-resistor-ohms", @@ -909,10 +910,21 @@ static u8 rv3028_set_trickle_charger(struct rv3028_data *rv3028, } } + /* setup backup switchover mode */ + if (!device_property_read_u32(&client->dev, + "backup-switchover-mode", + &bsm)) { + if (bsm <= 3) { + val_mask |= RV3028_BACKUP_BSM; + val |= (u8)(bsm << 2); + } else { + dev_warn(&client->dev, "invalid backup switchover mode value\n"); + } + } + /* only update EEPROM if changes are necessary */ - if (val_old != val) { - ret = rv3028_update_cfg(rv3028, RV3028_BACKUP, RV3028_BACKUP_TCE | - RV3028_BACKUP_TCR_MASK, val); + if ((val_old & val_mask) != val) { + ret = rv3028_update_cfg(rv3028, RV3028_BACKUP, val_mask, val); if (ret) return ret; } |