diff options
Diffstat (limited to 'drivers/hwmon/it87.c')
| -rw-r--r-- | drivers/hwmon/it87.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 956cd553c71..de62f60bcaf 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -1202,6 +1202,22 @@ static void it87_init_client(struct i2c_client *client, struct it87_data *data) data->manual_pwm_ctl[i] = 0xff; } + /* Some chips seem to have default value 0xff for all limit + * registers. For low voltage limits it makes no sense and triggers + * alarms, so change to 0 instead. For high temperature limits, it + * means -1 degree C, which surprisingly doesn't trigger an alarm, + * but is still confusing, so change to 127 degrees C. */ + for (i = 0; i < 8; i++) { + tmp = it87_read_value(client, IT87_REG_VIN_MIN(i)); + if (tmp == 0xff) + it87_write_value(client, IT87_REG_VIN_MIN(i), 0); + } + for (i = 0; i < 3; i++) { + tmp = it87_read_value(client, IT87_REG_TEMP_HIGH(i)); + if (tmp == 0xff) + it87_write_value(client, IT87_REG_TEMP_HIGH(i), 127); + } + /* Check if temperature channnels are reset manually or by some reason */ tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE); if ((tmp & 0x3f) == 0) { |