diff options
Diffstat (limited to 'drivers/hwmon/lm75.c')
| -rw-r--r-- | drivers/hwmon/lm75.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c index d16dbb33a53..fe41d5ae7cb 100644 --- a/drivers/hwmon/lm75.c +++ b/drivers/hwmon/lm75.c @@ -44,6 +44,7 @@ enum lm75_type { /* keep sorted in alphabetical order */ g751, lm75, lm75a, + lm75b, max6625, max6626, mcp980x, @@ -176,6 +177,10 @@ static struct attribute *lm75_attrs[] = { }; ATTRIBUTE_GROUPS(lm75); +static const struct thermal_zone_of_device_ops lm75_of_thermal_ops = { + .get_temp = lm75_read_temp, +}; + /*-----------------------------------------------------------------------*/ /* device probe and removal */ @@ -233,6 +238,10 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id) data->resolution = 9; data->sample_time = HZ / 2; break; + case lm75b: + data->resolution = 11; + data->sample_time = HZ / 4; + break; case max6625: data->resolution = 9; data->sample_time = HZ / 4; @@ -291,10 +300,9 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id) if (IS_ERR(data->hwmon_dev)) return PTR_ERR(data->hwmon_dev); - data->tz = thermal_zone_of_sensor_register(data->hwmon_dev, - 0, + data->tz = thermal_zone_of_sensor_register(data->hwmon_dev, 0, data->hwmon_dev, - lm75_read_temp, NULL); + &lm75_of_thermal_ops); if (IS_ERR(data->tz)) data->tz = NULL; @@ -322,6 +330,7 @@ static const struct i2c_device_id lm75_ids[] = { { "g751", g751, }, { "lm75", lm75, }, { "lm75a", lm75a, }, + { "lm75b", lm75b, }, { "max6625", max6625, }, { "max6626", max6626, }, { "mcp980x", mcp980x, }, @@ -409,6 +418,12 @@ static int lm75_detect(struct i2c_client *new_client, || i2c_smbus_read_byte_data(new_client, 7) != os) return -ENODEV; } + /* + * It is very unlikely that this is a LM75 if both + * hysteresis and temperature limit registers are 0. + */ + if (hyst == 0 && os == 0) + return -ENODEV; /* Addresses cycling */ for (i = 8; i <= 248; i += 40) { |