| // 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_MAPLE, |
| .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 = (uintptr_t)i2c_get_match_data(client); |
| |
| 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"); |