diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/it87.c | 83 |
1 files changed, 51 insertions, 32 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index e7f14e61d6f2..0317e441ca51 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -222,6 +222,7 @@ struct it87_data { u8 in[9]; /* Register value */ u8 in_max[9]; /* Register value */ u8 in_min[9]; /* Register value */ + u8 has_fan; /* Bitfield, fans enabled */ u16 fan[3]; /* Register values, possibly combined */ u16 fan_min[3]; /* Register values, possibly combined */ u8 temp[3]; /* Register value */ @@ -967,38 +968,51 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind) device_create_file(&new_client->dev, &sensor_dev_attr_temp2_type.dev_attr); device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr); + /* Do not create fan files for disabled fans */ if (data->type == it8716) { /* 16-bit tachometers */ - device_create_file(&new_client->dev, - &sensor_dev_attr_fan1_input16.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan2_input16.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan3_input16.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan1_min16.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan2_min16.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan3_min16.dev_attr); + if (data->has_fan & (1 << 0)) { + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_input16.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_min16.dev_attr); + } + if (data->has_fan & (1 << 1)) { + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_input16.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_min16.dev_attr); + } + if (data->has_fan & (1 << 2)) { + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_input16.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_min16.dev_attr); + } } else { - device_create_file(&new_client->dev, - &sensor_dev_attr_fan1_input.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan2_input.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan3_input.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan1_min.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan2_min.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan3_min.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan1_div.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan2_div.dev_attr); - device_create_file(&new_client->dev, - &sensor_dev_attr_fan3_div.dev_attr); + if (data->has_fan & (1 << 0)) { + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_div.dev_attr); + } + if (data->has_fan & (1 << 1)) { + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_div.dev_attr); + } + if (data->has_fan & (1 << 2)) { + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_div.dev_attr); + } } device_create_file(&new_client->dev, &dev_attr_alarms); @@ -1175,11 +1189,12 @@ static void it87_init_client(struct i2c_client *client, struct it87_data *data) data->fan_main_ctrl |= 0x70; it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); } + data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; /* Set tachometers to 16-bit mode if needed */ if (data->type == it8716) { tmp = it87_read_value(client, IT87_REG_FAN_16BIT); - if ((tmp & 0x07) != 0x07) { + if (~tmp & 0x07 & data->has_fan) { dev_dbg(&client->dev, "Setting fan1-3 to 16-bit mode\n"); it87_write_value(client, IT87_REG_FAN_16BIT, @@ -1244,6 +1259,10 @@ static struct it87_data *it87_update_device(struct device *dev) data->in_max[8] = 255; for (i = 0; i < 3; i++) { + /* Skip disabled fans */ + if (!(data->has_fan & (1 << i))) + continue; + data->fan_min[i] = it87_read_value(client, IT87_REG_FAN_MIN(i)); data->fan[i] = it87_read_value(client, @@ -1266,7 +1285,7 @@ static struct it87_data *it87_update_device(struct device *dev) } /* Newer chips don't have clock dividers */ - if (data->type != it8716) { + if ((data->has_fan & 0x07) && data->type != it8716) { i = it87_read_value(client, IT87_REG_FAN_DIV); data->fan_div[0] = i & 0x07; data->fan_div[1] = (i >> 3) & 0x07; |