diff options
Diffstat (limited to 'drivers/hwmon/tmp401.c')
| -rw-r--r-- | drivers/hwmon/tmp401.c | 255 |
1 files changed, 125 insertions, 130 deletions
diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c index d14a1af9f550..ad8d535235c5 100644 --- a/drivers/hwmon/tmp401.c +++ b/drivers/hwmon/tmp401.c @@ -92,17 +92,6 @@ static const u8 TMP411_TEMP_HIGHEST_LSB[2] = { 0x33, 0x37 }; #define TMP411_DEVICE_ID 0x12 /* - * Functions declarations - */ - -static int tmp401_probe(struct i2c_client *client, - const struct i2c_device_id *id); -static int tmp401_detect(struct i2c_client *client, - struct i2c_board_info *info); -static int tmp401_remove(struct i2c_client *client); -static struct tmp401_data *tmp401_update_device(struct device *dev); - -/* * Driver data (common to all clients) */ @@ -113,18 +102,6 @@ static const struct i2c_device_id tmp401_id[] = { }; MODULE_DEVICE_TABLE(i2c, tmp401_id); -static struct i2c_driver tmp401_driver = { - .class = I2C_CLASS_HWMON, - .driver = { - .name = "tmp401", - }, - .probe = tmp401_probe, - .remove = tmp401_remove, - .id_table = tmp401_id, - .detect = tmp401_detect, - .address_list = normal_i2c, -}; - /* * Client data (each client gets its own) */ @@ -194,6 +171,71 @@ static u8 tmp401_crit_temp_to_register(long temp, u8 config) return (temp + 500) / 1000; } +static struct tmp401_data *tmp401_update_device_reg16( + struct i2c_client *client, struct tmp401_data *data) +{ + int i; + + for (i = 0; i < 2; i++) { + /* + * High byte must be read first immediately followed + * by the low byte + */ + data->temp[i] = i2c_smbus_read_byte_data(client, + TMP401_TEMP_MSB[i]) << 8; + data->temp[i] |= i2c_smbus_read_byte_data(client, + TMP401_TEMP_LSB[i]); + data->temp_low[i] = i2c_smbus_read_byte_data(client, + TMP401_TEMP_LOW_LIMIT_MSB_READ[i]) << 8; + data->temp_low[i] |= i2c_smbus_read_byte_data(client, + TMP401_TEMP_LOW_LIMIT_LSB[i]); + data->temp_high[i] = i2c_smbus_read_byte_data(client, + TMP401_TEMP_HIGH_LIMIT_MSB_READ[i]) << 8; + data->temp_high[i] |= i2c_smbus_read_byte_data(client, + TMP401_TEMP_HIGH_LIMIT_LSB[i]); + data->temp_crit[i] = i2c_smbus_read_byte_data(client, + TMP401_TEMP_CRIT_LIMIT[i]); + + if (data->kind == tmp411) { + data->temp_lowest[i] = i2c_smbus_read_byte_data(client, + TMP411_TEMP_LOWEST_MSB[i]) << 8; + data->temp_lowest[i] |= i2c_smbus_read_byte_data( + client, TMP411_TEMP_LOWEST_LSB[i]); + + data->temp_highest[i] = i2c_smbus_read_byte_data( + client, TMP411_TEMP_HIGHEST_MSB[i]) << 8; + data->temp_highest[i] |= i2c_smbus_read_byte_data( + client, TMP411_TEMP_HIGHEST_LSB[i]); + } + } + return data; +} + +static struct tmp401_data *tmp401_update_device(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct tmp401_data *data = i2c_get_clientdata(client); + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { + data->status = i2c_smbus_read_byte_data(client, TMP401_STATUS); + data->config = i2c_smbus_read_byte_data(client, + TMP401_CONFIG_READ); + tmp401_update_device_reg16(client, data); + + data->temp_crit_hyst = i2c_smbus_read_byte_data(client, + TMP401_TEMP_CRIT_HYST); + + data->last_updated = jiffies; + data->valid = 1; + } + + mutex_unlock(&data->update_lock); + + return data; +} + static ssize_t show_temp_value(struct device *dev, struct device_attribute *devattr, char *buf) { @@ -420,30 +462,36 @@ static ssize_t reset_temp_history(struct device *dev, } static struct sensor_device_attribute tmp401_attr[] = { - SENSOR_ATTR(temp1_input, 0444, show_temp_value, NULL, 0), - SENSOR_ATTR(temp1_min, 0644, show_temp_min, store_temp_min, 0), - SENSOR_ATTR(temp1_max, 0644, show_temp_max, store_temp_max, 0), - SENSOR_ATTR(temp1_crit, 0644, show_temp_crit, store_temp_crit, 0), - SENSOR_ATTR(temp1_crit_hyst, 0644, show_temp_crit_hyst, + SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_value, NULL, 0), + SENSOR_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min, + store_temp_min, 0), + SENSOR_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, + store_temp_max, 0), + SENSOR_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_crit, + store_temp_crit, 0), + SENSOR_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_crit_hyst, store_temp_crit_hyst, 0), - SENSOR_ATTR(temp1_min_alarm, 0444, show_status, NULL, + SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_status, NULL, TMP401_STATUS_LOCAL_LOW), - SENSOR_ATTR(temp1_max_alarm, 0444, show_status, NULL, + SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_status, NULL, TMP401_STATUS_LOCAL_HIGH), - SENSOR_ATTR(temp1_crit_alarm, 0444, show_status, NULL, + SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_status, NULL, TMP401_STATUS_LOCAL_CRIT), - SENSOR_ATTR(temp2_input, 0444, show_temp_value, NULL, 1), - SENSOR_ATTR(temp2_min, 0644, show_temp_min, store_temp_min, 1), - SENSOR_ATTR(temp2_max, 0644, show_temp_max, store_temp_max, 1), - SENSOR_ATTR(temp2_crit, 0644, show_temp_crit, store_temp_crit, 1), - SENSOR_ATTR(temp2_crit_hyst, 0444, show_temp_crit_hyst, NULL, 1), - SENSOR_ATTR(temp2_fault, 0444, show_status, NULL, + SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_value, NULL, 1), + SENSOR_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min, + store_temp_min, 1), + SENSOR_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max, + store_temp_max, 1), + SENSOR_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit, + store_temp_crit, 1), + SENSOR_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 1), + SENSOR_ATTR(temp2_fault, S_IRUGO, show_status, NULL, TMP401_STATUS_REMOTE_OPEN), - SENSOR_ATTR(temp2_min_alarm, 0444, show_status, NULL, + SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_status, NULL, TMP401_STATUS_REMOTE_LOW), - SENSOR_ATTR(temp2_max_alarm, 0444, show_status, NULL, + SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_status, NULL, TMP401_STATUS_REMOTE_HIGH), - SENSOR_ATTR(temp2_crit_alarm, 0444, show_status, NULL, + SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_status, NULL, TMP401_STATUS_REMOTE_CRIT), }; @@ -455,11 +503,11 @@ static struct sensor_device_attribute tmp401_attr[] = { * and remote channels. */ static struct sensor_device_attribute tmp411_attr[] = { - SENSOR_ATTR(temp1_highest, 0444, show_temp_highest, NULL, 0), - SENSOR_ATTR(temp1_lowest, 0444, show_temp_lowest, NULL, 0), - SENSOR_ATTR(temp2_highest, 0444, show_temp_highest, NULL, 1), - SENSOR_ATTR(temp2_lowest, 0444, show_temp_lowest, NULL, 1), - SENSOR_ATTR(temp_reset_history, 0200, NULL, reset_temp_history, 0), + SENSOR_ATTR(temp1_highest, S_IRUGO, show_temp_highest, NULL, 0), + SENSOR_ATTR(temp1_lowest, S_IRUGO, show_temp_lowest, NULL, 0), + SENSOR_ATTR(temp2_highest, S_IRUGO, show_temp_highest, NULL, 1), + SENSOR_ATTR(temp2_lowest, S_IRUGO, show_temp_lowest, NULL, 1), + SENSOR_ATTR(temp_reset_history, S_IWUSR, NULL, reset_temp_history, 0), }; /* @@ -529,6 +577,27 @@ static int tmp401_detect(struct i2c_client *client, return 0; } +static int tmp401_remove(struct i2c_client *client) +{ + struct tmp401_data *data = i2c_get_clientdata(client); + int i; + + if (data->hwmon_dev) + hwmon_device_unregister(data->hwmon_dev); + + for (i = 0; i < ARRAY_SIZE(tmp401_attr); i++) + device_remove_file(&client->dev, &tmp401_attr[i].dev_attr); + + if (data->kind == tmp411) { + for (i = 0; i < ARRAY_SIZE(tmp411_attr); i++) + device_remove_file(&client->dev, + &tmp411_attr[i].dev_attr); + } + + kfree(data); + return 0; +} + static int tmp401_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -581,91 +650,17 @@ exit_remove: return err; } -static int tmp401_remove(struct i2c_client *client) -{ - struct tmp401_data *data = i2c_get_clientdata(client); - int i; - - if (data->hwmon_dev) - hwmon_device_unregister(data->hwmon_dev); - - for (i = 0; i < ARRAY_SIZE(tmp401_attr); i++) - device_remove_file(&client->dev, &tmp401_attr[i].dev_attr); - - if (data->kind == tmp411) { - for (i = 0; i < ARRAY_SIZE(tmp411_attr); i++) - device_remove_file(&client->dev, - &tmp411_attr[i].dev_attr); - } - - kfree(data); - return 0; -} - -static struct tmp401_data *tmp401_update_device_reg16( - struct i2c_client *client, struct tmp401_data *data) -{ - int i; - - for (i = 0; i < 2; i++) { - /* - * High byte must be read first immediately followed - * by the low byte - */ - data->temp[i] = i2c_smbus_read_byte_data(client, - TMP401_TEMP_MSB[i]) << 8; - data->temp[i] |= i2c_smbus_read_byte_data(client, - TMP401_TEMP_LSB[i]); - data->temp_low[i] = i2c_smbus_read_byte_data(client, - TMP401_TEMP_LOW_LIMIT_MSB_READ[i]) << 8; - data->temp_low[i] |= i2c_smbus_read_byte_data(client, - TMP401_TEMP_LOW_LIMIT_LSB[i]); - data->temp_high[i] = i2c_smbus_read_byte_data(client, - TMP401_TEMP_HIGH_LIMIT_MSB_READ[i]) << 8; - data->temp_high[i] |= i2c_smbus_read_byte_data(client, - TMP401_TEMP_HIGH_LIMIT_LSB[i]); - data->temp_crit[i] = i2c_smbus_read_byte_data(client, - TMP401_TEMP_CRIT_LIMIT[i]); - - if (data->kind == tmp411) { - data->temp_lowest[i] = i2c_smbus_read_byte_data(client, - TMP411_TEMP_LOWEST_MSB[i]) << 8; - data->temp_lowest[i] |= i2c_smbus_read_byte_data( - client, TMP411_TEMP_LOWEST_LSB[i]); - - data->temp_highest[i] = i2c_smbus_read_byte_data( - client, TMP411_TEMP_HIGHEST_MSB[i]) << 8; - data->temp_highest[i] |= i2c_smbus_read_byte_data( - client, TMP411_TEMP_HIGHEST_LSB[i]); - } - } - return data; -} - -static struct tmp401_data *tmp401_update_device(struct device *dev) -{ - struct i2c_client *client = to_i2c_client(dev); - struct tmp401_data *data = i2c_get_clientdata(client); - - mutex_lock(&data->update_lock); - - if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { - data->status = i2c_smbus_read_byte_data(client, TMP401_STATUS); - data->config = i2c_smbus_read_byte_data(client, - TMP401_CONFIG_READ); - tmp401_update_device_reg16(client, data); - - data->temp_crit_hyst = i2c_smbus_read_byte_data(client, - TMP401_TEMP_CRIT_HYST); - - data->last_updated = jiffies; - data->valid = 1; - } - - mutex_unlock(&data->update_lock); - - return data; -} +static struct i2c_driver tmp401_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "tmp401", + }, + .probe = tmp401_probe, + .remove = tmp401_remove, + .id_table = tmp401_id, + .detect = tmp401_detect, + .address_list = normal_i2c, +}; static int __init tmp401_init(void) { |