diff options
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-rx8581.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-rx8581.c b/drivers/rtc/rtc-rx8581.c index 9718aaaa8215..600b890a3c15 100644 --- a/drivers/rtc/rtc-rx8581.c +++ b/drivers/rtc/rtc-rx8581.c @@ -168,7 +168,7 @@ static int rx8581_set_datetime(struct i2c_client *client, struct rtc_time *tm) return -EIO; } - err = i2c_smbus_write_byte_data(client, RX8581_REG_FLAG, + err = i2c_smbus_write_byte_data(client, RX8581_REG_CTRL, (data | RX8581_CTRL_STOP)); if (err < 0) { dev_err(&client->dev, "Unable to write control register\n"); @@ -182,6 +182,20 @@ static int rx8581_set_datetime(struct i2c_client *client, struct rtc_time *tm) return -EIO; } + /* get VLF and clear it */ + data = i2c_smbus_read_byte_data(client, RX8581_REG_FLAG); + if (data < 0) { + dev_err(&client->dev, "Unable to read flag register\n"); + return -EIO; + } + + err = i2c_smbus_write_byte_data(client, RX8581_REG_FLAG, + (data & ~(RX8581_FLAG_VLF))); + if (err != 0) { + dev_err(&client->dev, "Unable to write flag register\n"); + return -EIO; + } + /* Restart the clock */ data = i2c_smbus_read_byte_data(client, RX8581_REG_CTRL); if (data < 0) { @@ -189,8 +203,8 @@ static int rx8581_set_datetime(struct i2c_client *client, struct rtc_time *tm) return -EIO; } - err = i2c_smbus_write_byte_data(client, RX8581_REG_FLAG, - (data | ~(RX8581_CTRL_STOP))); + err = i2c_smbus_write_byte_data(client, RX8581_REG_CTRL, + (data & ~(RX8581_CTRL_STOP))); if (err != 0) { dev_err(&client->dev, "Unable to write control register\n"); return -EIO; |