diff options
Diffstat (limited to 'drivers/hwmon/tmp401.c')
| -rw-r--r-- | drivers/hwmon/tmp401.c | 779 |
1 files changed, 779 insertions, 0 deletions
diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c new file mode 100644 index 0000000000..91f2314568 --- /dev/null +++ b/drivers/hwmon/tmp401.c @@ -0,0 +1,779 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* tmp401.c + * + * Copyright (C) 2007,2008 Hans de Goede <hdegoede@redhat.com> + * Preliminary tmp411 support by: + * Gabriel Konat, Sander Leget, Wouter Willems + * Copyright (C) 2009 Andre Prendel <andre.prendel@gmx.de> + * + * Cleanup and support for TMP431 and TMP432 by Guenter Roeck + * Copyright (c) 2013 Guenter Roeck <linux@roeck-us.net> + */ + +/* + * Driver for the Texas Instruments TMP401 SMBUS temperature sensor IC. + * + * Note this IC is in some aspect similar to the LM90, but it has quite a + * few differences too, for example the local temp has a higher resolution + * and thus has 16 bits registers for its value and limit instead of 8 bits. + */ + +#include <linux/bitops.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/hwmon.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +/* Addresses to scan */ +static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4c, 0x4d, + 0x4e, 0x4f, I2C_CLIENT_END }; + +enum chips { tmp401, tmp411, tmp431, tmp432, tmp435 }; + +/* + * The TMP401 registers, note some registers have different addresses for + * reading and writing + */ +#define TMP401_STATUS 0x02 +#define TMP401_CONFIG 0x03 +#define TMP401_CONVERSION_RATE 0x04 +#define TMP4XX_N_FACTOR_REG 0x18 +#define TMP43X_BETA_RANGE 0x25 +#define TMP401_TEMP_CRIT_HYST 0x21 +#define TMP401_MANUFACTURER_ID_REG 0xFE +#define TMP401_DEVICE_ID_REG 0xFF + +static const u8 TMP401_TEMP_MSB[7][3] = { + { 0x00, 0x01, 0x23 }, /* temp */ + { 0x06, 0x08, 0x16 }, /* low limit */ + { 0x05, 0x07, 0x15 }, /* high limit */ + { 0x20, 0x19, 0x1a }, /* therm (crit) limit */ + { 0x30, 0x34, 0x00 }, /* lowest */ + { 0x32, 0xf6, 0x00 }, /* highest */ +}; + +/* [0] = fault, [1] = low, [2] = high, [3] = therm/crit */ +static const u8 TMP432_STATUS_REG[] = { + 0x1b, 0x36, 0x35, 0x37 }; + +/* Flags */ +#define TMP401_CONFIG_RANGE BIT(2) +#define TMP401_CONFIG_SHUTDOWN BIT(6) +#define TMP401_STATUS_LOCAL_CRIT BIT(0) +#define TMP401_STATUS_REMOTE_CRIT BIT(1) +#define TMP401_STATUS_REMOTE_OPEN BIT(2) +#define TMP401_STATUS_REMOTE_LOW BIT(3) +#define TMP401_STATUS_REMOTE_HIGH BIT(4) +#define TMP401_STATUS_LOCAL_LOW BIT(5) +#define TMP401_STATUS_LOCAL_HIGH BIT(6) + +/* On TMP432, each status has its own register */ +#define TMP432_STATUS_LOCAL BIT(0) +#define TMP432_STATUS_REMOTE1 BIT(1) +#define TMP432_STATUS_REMOTE2 BIT(2) + +/* Manufacturer / Device ID's */ +#define TMP401_MANUFACTURER_ID 0x55 +#define TMP401_DEVICE_ID 0x11 +#define TMP411A_DEVICE_ID 0x12 +#define TMP411B_DEVICE_ID 0x13 +#define TMP411C_DEVICE_ID 0x10 +#define TMP431_DEVICE_ID 0x31 +#define TMP432_DEVICE_ID 0x32 +#define TMP435_DEVICE_ID 0x35 + +/* + * Driver data (common to all clients) + */ + +static const struct i2c_device_id tmp401_id[] = { + { "tmp401", tmp401 }, + { "tmp411", tmp411 }, + { "tmp431", tmp431 }, + { "tmp432", tmp432 }, + { "tmp435", tmp435 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tmp401_id); + +/* + * Client data (each client gets its own) + */ + +struct tmp401_data { + struct i2c_client *client; + struct regmap *regmap; + struct mutex update_lock; + enum chips kind; + + bool extended_range; + + /* hwmon API configuration data */ + u32 chip_channel_config[4]; + struct hwmon_channel_info chip_info; + u32 temp_channel_config[4]; + struct hwmon_channel_info temp_info; + const struct hwmon_channel_info *info[3]; + struct hwmon_chip_info chip; +}; + +/* regmap */ + +static bool tmp401_regmap_is_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case 0: /* local temp msb */ + case 1: /* remote temp msb */ + case 2: /* status */ + case 0x10: /* remote temp lsb */ + case 0x15: /* local temp lsb */ + case 0x1b: /* status (tmp432) */ + case 0x23 ... 0x24: /* remote temp 2 msb / lsb */ + case 0x30 ... 0x37: /* lowest/highest temp; status (tmp432) */ + return true; + default: + return false; + } +} + +static int tmp401_reg_read(void *context, unsigned int reg, unsigned int *val) +{ + struct tmp401_data *data = context; + struct i2c_client *client = data->client; + int regval; + + switch (reg) { + case 0: /* local temp msb */ + case 1: /* remote temp msb */ + case 5: /* local temp high limit msb */ + case 6: /* local temp low limit msb */ + case 7: /* remote temp ligh limit msb */ + case 8: /* remote temp low limit msb */ + case 0x15: /* remote temp 2 high limit msb */ + case 0x16: /* remote temp 2 low limit msb */ + case 0x23: /* remote temp 2 msb */ + case 0x30: /* local temp minimum, tmp411 */ + case 0x32: /* local temp maximum, tmp411 */ + case 0x34: /* remote temp minimum, tmp411 */ + case 0xf6: /* remote temp maximum, tmp411 (really 0x36) */ + /* work around register overlap between TMP411 and TMP432 */ + if (reg == 0xf6) + reg = 0x36; + regval = i2c_smbus_read_word_swapped(client, reg); + if (regval < 0) + return regval; + *val = regval; + break; + case 0x19: /* critical limits, 8-bit registers */ + case 0x1a: + case 0x20: + regval = i2c_smbus_read_byte_data(client, reg); + if (regval < 0) + return regval; + *val = regval << 8; + break; + case 0x1b: + case 0x35 ... 0x37: + if (data->kind == tmp432) { + regval = i2c_smbus_read_byte_data(client, reg); + if (regval < 0) + return regval; + *val = regval; + break; + } + /* simulate TMP432 status registers */ + regval = i2c_smbus_read_byte_data(client, TMP401_STATUS); + if (regval < 0) + return regval; + *val = 0; + switch (reg) { + case 0x1b: /* open / fault */ + if (regval & TMP401_STATUS_REMOTE_OPEN) + *val |= BIT(1); + break; + case 0x35: /* high limit */ + if (regval & TMP401_STATUS_LOCAL_HIGH) + *val |= BIT(0); + if (regval & TMP401_STATUS_REMOTE_HIGH) + *val |= BIT(1); + break; + case 0x36: /* low limit */ + if (regval & TMP401_STATUS_LOCAL_LOW) + *val |= BIT(0); + if (regval & TMP401_STATUS_REMOTE_LOW) + *val |= BIT(1); + break; + case 0x37: /* therm / crit limit */ + if (regval & TMP401_STATUS_LOCAL_CRIT) + *val |= BIT(0); + if (regval & TMP401_STATUS_REMOTE_CRIT) + *val |= BIT(1); + break; + } + break; + default: + regval = i2c_smbus_read_byte_data(client, reg); + if (regval < 0) + return regval; + *val = regval; + break; + } + return 0; +} + +static int tmp401_reg_write(void *context, unsigned int reg, unsigned int val) +{ + struct tmp401_data *data = context; + struct i2c_client *client = data->client; + + switch (reg) { + case 0x05: /* local temp high limit msb */ + case 0x06: /* local temp low limit msb */ + case 0x07: /* remote temp ligh limit msb */ + case 0x08: /* remote temp low limit msb */ + reg += 6; /* adjust for register write address */ + fallthrough; + case 0x15: /* remote temp 2 high limit msb */ + case 0x16: /* remote temp 2 low limit msb */ + return i2c_smbus_write_word_swapped(client, reg, val); + case 0x19: /* critical limits, 8-bit registers */ + case 0x1a: + case 0x20: + return i2c_smbus_write_byte_data(client, reg, val >> 8); + case TMP401_CONVERSION_RATE: + case TMP401_CONFIG: + reg += 6; /* adjust for register write address */ + fallthrough; + default: + return i2c_smbus_write_byte_data(client, reg, val); + } +} + +static const struct regmap_config tmp401_regmap_config = { + .reg_bits = 8, + .val_bits = 16, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = tmp401_regmap_is_volatile, + .reg_read = tmp401_reg_read, + .reg_write = tmp401_reg_write, +}; + +/* temperature conversion */ + +static int tmp401_register_to_temp(u16 reg, bool extended) +{ + int temp = reg; + + if (extended) + temp -= 64 * 256; + + return DIV_ROUND_CLOSEST(temp * 125, 32); +} + +static u16 tmp401_temp_to_register(long temp, bool extended, int zbits) +{ + if (extended) { + temp = clamp_val(temp, -64000, 191000); + temp += 64000; + } else { + temp = clamp_val(temp, 0, 127000); + } + + return DIV_ROUND_CLOSEST(temp * (1 << (8 - zbits)), 1000) << zbits; +} + +/* hwmon API functions */ + +static const u8 tmp401_temp_reg_index[] = { + [hwmon_temp_input] = 0, + [hwmon_temp_min] = 1, + [hwmon_temp_max] = 2, + [hwmon_temp_crit] = 3, + [hwmon_temp_lowest] = 4, + [hwmon_temp_highest] = 5, +}; + +static const u8 tmp401_status_reg_index[] = { + [hwmon_temp_fault] = 0, + [hwmon_temp_min_alarm] = 1, + [hwmon_temp_max_alarm] = 2, + [hwmon_temp_crit_alarm] = 3, +}; + +static int tmp401_temp_read(struct device *dev, u32 attr, int channel, long *val) +{ + struct tmp401_data *data = dev_get_drvdata(dev); + struct regmap *regmap = data->regmap; + unsigned int regval; + int reg, ret; + + switch (attr) { + case hwmon_temp_input: + case hwmon_temp_min: + case hwmon_temp_max: + case hwmon_temp_crit: + case hwmon_temp_lowest: + case hwmon_temp_highest: + reg = TMP401_TEMP_MSB[tmp401_temp_reg_index[attr]][channel]; + ret = regmap_read(regmap, reg, ®val); + if (ret < 0) + return ret; + *val = tmp401_register_to_temp(regval, data->extended_range); + break; + case hwmon_temp_crit_hyst: + mutex_lock(&data->update_lock); + reg = TMP401_TEMP_MSB[3][channel]; + ret = regmap_read(regmap, reg, ®val); + if (ret < 0) + goto unlock; + *val = tmp401_register_to_temp(regval, data->extended_range); + ret = regmap_read(regmap, TMP401_TEMP_CRIT_HYST, ®val); + if (ret < 0) + goto unlock; + *val -= regval * 1000; +unlock: + mutex_unlock(&data->update_lock); + if (ret < 0) + return ret; + break; + case hwmon_temp_fault: + case hwmon_temp_min_alarm: + case hwmon_temp_max_alarm: + case hwmon_temp_crit_alarm: + reg = TMP432_STATUS_REG[tmp401_status_reg_index[attr]]; + ret = regmap_read(regmap, reg, ®val); + if (ret < 0) + return ret; + *val = !!(regval & BIT(channel)); + break; + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int tmp401_temp_write(struct device *dev, u32 attr, int channel, + long val) +{ + struct tmp401_data *data = dev_get_drvdata(dev); + struct regmap *regmap = data->regmap; + unsigned int regval; + int reg, ret, temp; + + mutex_lock(&data->update_lock); + switch (attr) { + case hwmon_temp_min: + case hwmon_temp_max: + case hwmon_temp_crit: + reg = TMP401_TEMP_MSB[tmp401_temp_reg_index[attr]][channel]; + regval = tmp401_temp_to_register(val, data->extended_range, + attr == hwmon_temp_crit ? 8 : 4); + ret = regmap_write(regmap, reg, regval); + break; + case hwmon_temp_crit_hyst: + if (data->extended_range) + val = clamp_val(val, -64000, 191000); + else + val = clamp_val(val, 0, 127000); + + reg = TMP401_TEMP_MSB[3][channel]; + ret = regmap_read(regmap, reg, ®val); + if (ret < 0) + break; + temp = tmp401_register_to_temp(regval, data->extended_range); + val = clamp_val(val, temp - 255000, temp); + regval = ((temp - val) + 500) / 1000; + ret = regmap_write(regmap, TMP401_TEMP_CRIT_HYST, regval); + break; + default: + ret = -EOPNOTSUPP; + break; + } + mutex_unlock(&data->update_lock); + return ret; +} + +static int tmp401_chip_read(struct device *dev, u32 attr, int channel, long *val) +{ + struct tmp401_data *data = dev_get_drvdata(dev); + u32 regval; + int ret; + + switch (attr) { + case hwmon_chip_update_interval: + ret = regmap_read(data->regmap, TMP401_CONVERSION_RATE, ®val); + if (ret < 0) + return ret; + *val = (1 << (7 - regval)) * 125; + break; + case hwmon_chip_temp_reset_history: + *val = 0; + break; + default: + return -EOPNOTSUPP; + } + + return 0; +} + +static int tmp401_set_convrate(struct regmap *regmap, long val) +{ + int rate; + + /* + * For valid rates, interval can be calculated as + * interval = (1 << (7 - rate)) * 125; + * Rounded rate is therefore + * rate = 7 - __fls(interval * 4 / (125 * 3)); + * Use clamp_val() to avoid overflows, and to ensure valid input + * for __fls. + */ + val = clamp_val(val, 125, 16000); + rate = 7 - __fls(val * 4 / (125 * 3)); + return regmap_write(regmap, TMP401_CONVERSION_RATE, rate); +} + +static int tmp401_chip_write(struct device *dev, u32 attr, int channel, long val) +{ + struct tmp401_data *data = dev_get_drvdata(dev); + struct regmap *regmap = data->regmap; + int err; + + mutex_lock(&data->update_lock); + switch (attr) { + case hwmon_chip_update_interval: + err = tmp401_set_convrate(regmap, val); + break; + case hwmon_chip_temp_reset_history: + if (val != 1) { + err = -EINVAL; + break; + } + /* + * Reset history by writing any value to any of the + * minimum/maximum registers (0x30-0x37). + */ + err = regmap_write(regmap, 0x30, 0); + break; + default: + err = -EOPNOTSUPP; + break; + } + mutex_unlock(&data->update_lock); + + return err; +} + +static int tmp401_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + switch (type) { + case hwmon_chip: + return tmp401_chip_read(dev, attr, channel, val); + case hwmon_temp: + return tmp401_temp_read(dev, attr, channel, val); + default: + return -EOPNOTSUPP; + } +} + +static int tmp401_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) +{ + switch (type) { + case hwmon_chip: + return tmp401_chip_write(dev, attr, channel, val); + case hwmon_temp: + return tmp401_temp_write(dev, attr, channel, val); + default: + return -EOPNOTSUPP; + } +} + +static umode_t tmp401_is_visible(const void *data, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + switch (type) { + case hwmon_chip: + switch (attr) { + case hwmon_chip_update_interval: + case hwmon_chip_temp_reset_history: + return 0644; + default: + break; + } + break; + case hwmon_temp: + switch (attr) { + case hwmon_temp_input: + case hwmon_temp_min_alarm: + case hwmon_temp_max_alarm: + case hwmon_temp_crit_alarm: + case hwmon_temp_fault: + case hwmon_temp_lowest: + case hwmon_temp_highest: + return 0444; + case hwmon_temp_min: + case hwmon_temp_max: + case hwmon_temp_crit: + case hwmon_temp_crit_hyst: + return 0644; + default: + break; + } + break; + default: + break; + } + return 0; +} + +static const struct hwmon_ops tmp401_ops = { + .is_visible = tmp401_is_visible, + .read = tmp401_read, + .write = tmp401_write, +}; + +/* chip initialization, detect, probe */ + +static int tmp401_init_client(struct tmp401_data *data) +{ + struct regmap *regmap = data->regmap; + u32 config, config_orig; + int ret; + u32 val = 0; + s32 nfactor = 0; + + /* Set conversion rate to 2 Hz */ + ret = regmap_write(regmap, TMP401_CONVERSION_RATE, 5); + if (ret < 0) + return ret; + + /* Start conversions (disable shutdown if necessary) */ + ret = regmap_read(regmap, TMP401_CONFIG, &config); + if (ret < 0) + return ret; + + config_orig = config; + config &= ~TMP401_CONFIG_SHUTDOWN; + + if (of_property_read_bool(data->client->dev.of_node, "ti,extended-range-enable")) { + /* Enable measurement over extended temperature range */ + config |= TMP401_CONFIG_RANGE; + } + + data->extended_range = !!(config & TMP401_CONFIG_RANGE); + + if (config != config_orig) { + ret = regmap_write(regmap, TMP401_CONFIG, config); + if (ret < 0) + return ret; + } + + ret = of_property_read_u32(data->client->dev.of_node, "ti,n-factor", &nfactor); + if (!ret) { + if (data->kind == tmp401) { + dev_err(&data->client->dev, "ti,tmp401 does not support n-factor correction\n"); + return -EINVAL; + } + if (nfactor < -128 || nfactor > 127) { + dev_err(&data->client->dev, "n-factor is invalid (%d)\n", nfactor); + return -EINVAL; + } + ret = regmap_write(regmap, TMP4XX_N_FACTOR_REG, (unsigned int)nfactor); + if (ret < 0) + return ret; + } + + ret = of_property_read_u32(data->client->dev.of_node, "ti,beta-compensation", &val); + if (!ret) { + if (data->kind == tmp401 || data->kind == tmp411) { + dev_err(&data->client->dev, "ti,tmp401 or ti,tmp411 does not support beta compensation\n"); + return -EINVAL; + } + if (val > 15) { + dev_err(&data->client->dev, "beta-compensation is invalid (%u)\n", val); + return -EINVAL; + } + ret = regmap_write(regmap, TMP43X_BETA_RANGE, val); + if (ret < 0) + return ret; + } + + return 0; +} + +static int tmp401_detect(struct i2c_client *client, + struct i2c_board_info *info) +{ + enum chips kind; + struct i2c_adapter *adapter = client->adapter; + u8 reg; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; + + /* Detect and identify the chip */ + reg = i2c_smbus_read_byte_data(client, TMP401_MANUFACTURER_ID_REG); + if (reg != TMP401_MANUFACTURER_ID) + return -ENODEV; + + reg = i2c_smbus_read_byte_data(client, TMP401_DEVICE_ID_REG); + + switch (reg) { + case TMP401_DEVICE_ID: + if (client->addr != 0x4c) + return -ENODEV; + kind = tmp401; + break; + case TMP411A_DEVICE_ID: + if (client->addr != 0x4c) + return -ENODEV; + kind = tmp411; + break; + case TMP411B_DEVICE_ID: + if (client->addr != 0x4d) + return -ENODEV; + kind = tmp411; + break; + case TMP411C_DEVICE_ID: + if (client->addr != 0x4e) + return -ENODEV; + kind = tmp411; + break; + case TMP431_DEVICE_ID: + if (client->addr != 0x4c && client->addr != 0x4d) + return -ENODEV; + kind = tmp431; + break; + case TMP432_DEVICE_ID: + if (client->addr != 0x4c && client->addr != 0x4d) + return -ENODEV; + kind = tmp432; + break; + case TMP435_DEVICE_ID: + kind = tmp435; + break; + default: + return -ENODEV; + } + + reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG); + if (reg & 0x1b) + return -ENODEV; + + reg = i2c_smbus_read_byte_data(client, TMP401_CONVERSION_RATE); + /* Datasheet says: 0x1-0x6 */ + if (reg > 15) + return -ENODEV; + + strscpy(info->type, tmp401_id[kind].name, I2C_NAME_SIZE); + + return 0; +} + +static int tmp401_probe(struct i2c_client *client) +{ + static const char * const names[] = { + "TMP401", "TMP411", "TMP431", "TMP432", "TMP435" + }; + struct device *dev = &client->dev; + struct hwmon_channel_info *info; + struct device *hwmon_dev; + struct tmp401_data *data; + int status; + + data = devm_kzalloc(dev, sizeof(struct tmp401_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->client = client; + mutex_init(&data->update_lock); + data->kind = i2c_match_id(tmp401_id, client)->driver_data; + + data->regmap = devm_regmap_init(dev, NULL, data, &tmp401_regmap_config); + if (IS_ERR(data->regmap)) + return PTR_ERR(data->regmap); + + /* initialize configuration data */ + data->chip.ops = &tmp401_ops; + data->chip.info = data->info; + + data->info[0] = &data->chip_info; + data->info[1] = &data->temp_info; + + info = &data->chip_info; + info->type = hwmon_chip; + info->config = data->chip_channel_config; + + data->chip_channel_config[0] = HWMON_C_UPDATE_INTERVAL; + + info = &data->temp_info; + info->type = hwmon_temp; + info->config = data->temp_channel_config; + + data->temp_channel_config[0] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM; + data->temp_channel_config[1] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT; + + if (data->kind == tmp411) { + data->temp_channel_config[0] |= HWMON_T_HIGHEST | HWMON_T_LOWEST; + data->temp_channel_config[1] |= HWMON_T_HIGHEST | HWMON_T_LOWEST; + data->chip_channel_config[0] |= HWMON_C_TEMP_RESET_HISTORY; + } + + if (data->kind == tmp432) { + data->temp_channel_config[2] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT; + } + + /* Initialize the TMP401 chip */ + status = tmp401_init_client(data); + if (status < 0) + return status; + + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, + &data->chip, NULL); + if (IS_ERR(hwmon_dev)) + return PTR_ERR(hwmon_dev); + + dev_info(dev, "Detected TI %s chip\n", names[data->kind]); + + return 0; +} + +static const struct of_device_id __maybe_unused tmp4xx_of_match[] = { + { .compatible = "ti,tmp401", }, + { .compatible = "ti,tmp411", }, + { .compatible = "ti,tmp431", }, + { .compatible = "ti,tmp432", }, + { .compatible = "ti,tmp435", }, + { }, +}; +MODULE_DEVICE_TABLE(of, tmp4xx_of_match); + +static struct i2c_driver tmp401_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "tmp401", + .of_match_table = of_match_ptr(tmp4xx_of_match), + }, + .probe = tmp401_probe, + .id_table = tmp401_id, + .detect = tmp401_detect, + .address_list = normal_i2c, +}; + +module_i2c_driver(tmp401_driver); + +MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); +MODULE_DESCRIPTION("Texas Instruments TMP401 temperature sensor driver"); +MODULE_LICENSE("GPL"); |