| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * emc1403.c - SMSC Thermal Driver |
| * |
| * Copyright (C) 2008 Intel Corp |
| * |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| * |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/i2c.h> |
| #include <linux/hwmon.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/err.h> |
| #include <linux/sysfs.h> |
| #include <linux/mutex.h> |
| #include <linux/regmap.h> |
| #include <linux/util_macros.h> |
| |
| #define THERMAL_PID_REG 0xfd |
| #define THERMAL_SMSC_ID_REG 0xfe |
| #define THERMAL_REVISION_REG 0xff |
| |
| enum emc1403_chip { emc1402, emc1403, emc1404, emc1428 }; |
| |
| struct thermal_data { |
| enum emc1403_chip chip; |
| struct regmap *regmap; |
| struct mutex mutex; |
| }; |
| |
| static ssize_t power_state_show(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct thermal_data *data = dev_get_drvdata(dev); |
| unsigned int val; |
| int retval; |
| |
| retval = regmap_read(data->regmap, 0x03, &val); |
| if (retval < 0) |
| return retval; |
| return sprintf(buf, "%d\n", !!(val & BIT(6))); |
| } |
| |
| static ssize_t power_state_store(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct thermal_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| int retval; |
| |
| if (kstrtoul(buf, 10, &val)) |
| return -EINVAL; |
| |
| retval = regmap_update_bits(data->regmap, 0x03, BIT(6), |
| val ? BIT(6) : 0); |
| if (retval < 0) |
| return retval; |
| return count; |
| } |
| |
| static DEVICE_ATTR_RW(power_state); |
| |
| static struct attribute *emc1403_attrs[] = { |
| &dev_attr_power_state.attr, |
| NULL |
| }; |
| ATTRIBUTE_GROUPS(emc1403); |
| |
| static int emc1403_detect(struct i2c_client *client, |
| struct i2c_board_info *info) |
| { |
| int id; |
| /* Check if thermal chip is SMSC and EMC1403 or EMC1423 */ |
| |
| id = i2c_smbus_read_byte_data(client, THERMAL_SMSC_ID_REG); |
| if (id != 0x5d) |
| return -ENODEV; |
| |
| id = i2c_smbus_read_byte_data(client, THERMAL_PID_REG); |
| switch (id) { |
| case 0x20: |
| strscpy(info->type, "emc1402", I2C_NAME_SIZE); |
| break; |
| case 0x21: |
| strscpy(info->type, "emc1403", I2C_NAME_SIZE); |
| break; |
| case 0x22: |
| strscpy(info->type, "emc1422", I2C_NAME_SIZE); |
| break; |
| case 0x23: |
| strscpy(info->type, "emc1423", I2C_NAME_SIZE); |
| break; |
| case 0x25: |
| strscpy(info->type, "emc1404", I2C_NAME_SIZE); |
| break; |
| case 0x27: |
| strscpy(info->type, "emc1424", I2C_NAME_SIZE); |
| break; |
| case 0x29: |
| strscpy(info->type, "emc1428", I2C_NAME_SIZE); |
| break; |
| case 0x59: |
| strscpy(info->type, "emc1438", I2C_NAME_SIZE); |
| break; |
| case 0x60: |
| strscpy(info->type, "emc1442", I2C_NAME_SIZE); |
| break; |
| default: |
| return -ENODEV; |
| } |
| |
| id = i2c_smbus_read_byte_data(client, THERMAL_REVISION_REG); |
| if (id < 0x01 || id > 0x04) |
| return -ENODEV; |
| |
| return 0; |
| } |
| |
| static bool emc1403_regmap_is_volatile(struct device *dev, unsigned int reg) |
| { |
| switch (reg) { |
| case 0x00: /* internal diode high byte */ |
| case 0x01: /* external diode 1 high byte */ |
| case 0x02: /* status */ |
| case 0x10: /* external diode 1 low byte */ |
| case 0x1b: /* external diode fault */ |
| case 0x23: /* external diode 2 high byte */ |
| case 0x24: /* external diode 2 low byte */ |
| case 0x29: /* internal diode low byte */ |
| case 0x2a: /* externl diode 3 high byte */ |
| case 0x2b: /* external diode 3 low byte */ |
| case 0x35: /* high limit status */ |
| case 0x36: /* low limit status */ |
| case 0x37: /* therm limit status */ |
| case 0x41: /* external diode 4 high byte */ |
| case 0x42: /* external diode 4 low byte */ |
| case 0x43: /* external diode 5 high byte */ |
| case 0x44: /* external diode 5 low byte */ |
| case 0x45: /* external diode 6 high byte */ |
| case 0x46: /* external diode 6 low byte */ |
| case 0x47: /* external diode 7 high byte */ |
| case 0x48: /* external diode 7 low byte */ |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static const struct regmap_config emc1403_regmap_config = { |
| .reg_bits = 8, |
| .val_bits = 8, |
| .cache_type = REGCACHE_MAPLE, |
| .volatile_reg = emc1403_regmap_is_volatile, |
| }; |
| |
| enum emc1403_reg_map {temp_min, temp_max, temp_crit, temp_input}; |
| |
| static u8 ema1403_temp_map[] = { |
| [hwmon_temp_min] = temp_min, |
| [hwmon_temp_max] = temp_max, |
| [hwmon_temp_crit] = temp_crit, |
| [hwmon_temp_input] = temp_input, |
| }; |
| |
| static u8 emc1403_temp_regs[][4] = { |
| [0] = { |
| [temp_min] = 0x06, |
| [temp_max] = 0x05, |
| [temp_crit] = 0x20, |
| [temp_input] = 0x00, |
| }, |
| [1] = { |
| [temp_min] = 0x08, |
| [temp_max] = 0x07, |
| [temp_crit] = 0x19, |
| [temp_input] = 0x01, |
| }, |
| [2] = { |
| [temp_min] = 0x16, |
| [temp_max] = 0x15, |
| [temp_crit] = 0x1a, |
| [temp_input] = 0x23, |
| }, |
| [3] = { |
| [temp_min] = 0x2d, |
| [temp_max] = 0x2c, |
| [temp_crit] = 0x30, |
| [temp_input] = 0x2a, |
| }, |
| [4] = { |
| [temp_min] = 0x51, |
| [temp_max] = 0x50, |
| [temp_crit] = 0x64, |
| [temp_input] = 0x41, |
| }, |
| [5] = { |
| [temp_min] = 0x55, |
| [temp_max] = 0x54, |
| [temp_crit] = 0x65, |
| [temp_input] = 0x43 |
| }, |
| [6] = { |
| [temp_min] = 0x59, |
| [temp_max] = 0x58, |
| [temp_crit] = 0x66, |
| [temp_input] = 0x45, |
| }, |
| [7] = { |
| [temp_min] = 0x5d, |
| [temp_max] = 0x5c, |
| [temp_crit] = 0x67, |
| [temp_input] = 0x47, |
| }, |
| }; |
| |
| static s8 emc1403_temp_regs_low[][4] = { |
| [0] = { |
| [temp_min] = -1, |
| [temp_max] = -1, |
| [temp_crit] = -1, |
| [temp_input] = 0x29, |
| }, |
| [1] = { |
| [temp_min] = 0x14, |
| [temp_max] = 0x13, |
| [temp_crit] = -1, |
| [temp_input] = 0x10, |
| }, |
| [2] = { |
| [temp_min] = 0x18, |
| [temp_max] = 0x17, |
| [temp_crit] = -1, |
| [temp_input] = 0x24, |
| }, |
| [3] = { |
| [temp_min] = 0x2f, |
| [temp_max] = 0x2e, |
| [temp_crit] = -1, |
| [temp_input] = 0x2b, |
| }, |
| [4] = { |
| [temp_min] = 0x53, |
| [temp_max] = 0x52, |
| [temp_crit] = -1, |
| [temp_input] = 0x42, |
| }, |
| [5] = { |
| [temp_min] = 0x57, |
| [temp_max] = 0x56, |
| [temp_crit] = -1, |
| [temp_input] = 0x44, |
| }, |
| [6] = { |
| [temp_min] = 0x5b, |
| [temp_max] = 0x5a, |
| [temp_crit] = -1, |
| [temp_input] = 0x46, |
| }, |
| [7] = { |
| [temp_min] = 0x5f, |
| [temp_max] = 0x5e, |
| [temp_crit] = -1, |
| [temp_input] = 0x48, |
| }, |
| }; |
| |
| static int __emc1403_get_temp(struct thermal_data *data, int channel, |
| enum emc1403_reg_map map, long *val) |
| { |
| unsigned int regvalh; |
| unsigned int regvall = 0; |
| int ret; |
| s8 reg; |
| |
| ret = regmap_read(data->regmap, emc1403_temp_regs[channel][map], ®valh); |
| if (ret < 0) |
| return ret; |
| |
| reg = emc1403_temp_regs_low[channel][map]; |
| if (reg >= 0) { |
| ret = regmap_read(data->regmap, reg, ®vall); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (data->chip == emc1428) |
| *val = sign_extend32((regvalh << 3) | (regvall >> 5), 10) * 125; |
| else |
| *val = ((regvalh << 3) | (regvall >> 5)) * 125; |
| |
| return 0; |
| } |
| |
| static int emc1403_get_temp(struct thermal_data *data, int channel, |
| enum emc1403_reg_map map, long *val) |
| { |
| int ret; |
| |
| mutex_lock(&data->mutex); |
| ret = __emc1403_get_temp(data, channel, map, val); |
| mutex_unlock(&data->mutex); |
| |
| return ret; |
| } |
| |
| static int emc1403_get_hyst(struct thermal_data *data, int channel, |
| enum emc1403_reg_map map, long *val) |
| { |
| int hyst, ret; |
| long limit; |
| |
| mutex_lock(&data->mutex); |
| ret = __emc1403_get_temp(data, channel, map, &limit); |
| if (ret < 0) |
| goto unlock; |
| ret = regmap_read(data->regmap, 0x21, &hyst); |
| if (ret < 0) |
| goto unlock; |
| if (map == temp_min) |
| *val = limit + hyst * 1000; |
| else |
| *val = limit - hyst * 1000; |
| unlock: |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| |
| static int emc1403_temp_read(struct thermal_data *data, u32 attr, int channel, long *val) |
| { |
| unsigned int regval; |
| int ret; |
| |
| switch (attr) { |
| case hwmon_temp_min: |
| case hwmon_temp_max: |
| case hwmon_temp_crit: |
| case hwmon_temp_input: |
| ret = emc1403_get_temp(data, channel, ema1403_temp_map[attr], val); |
| break; |
| case hwmon_temp_min_hyst: |
| ret = emc1403_get_hyst(data, channel, temp_min, val); |
| break; |
| case hwmon_temp_max_hyst: |
| ret = emc1403_get_hyst(data, channel, temp_max, val); |
| break; |
| case hwmon_temp_crit_hyst: |
| ret = emc1403_get_hyst(data, channel, temp_crit, val); |
| break; |
| case hwmon_temp_min_alarm: |
| if (data->chip == emc1402) { |
| ret = regmap_read(data->regmap, 0x02, ®val); |
| if (ret < 0) |
| break; |
| *val = !!(regval & BIT(5 - 2 * channel)); |
| } else { |
| ret = regmap_read(data->regmap, 0x36, ®val); |
| if (ret < 0) |
| break; |
| *val = !!(regval & BIT(channel)); |
| } |
| break; |
| case hwmon_temp_max_alarm: |
| if (data->chip == emc1402) { |
| ret = regmap_read(data->regmap, 0x02, ®val); |
| if (ret < 0) |
| break; |
| *val = !!(regval & BIT(6 - 2 * channel)); |
| } else { |
| ret = regmap_read(data->regmap, 0x35, ®val); |
| if (ret < 0) |
| break; |
| *val = !!(regval & BIT(channel)); |
| } |
| break; |
| case hwmon_temp_crit_alarm: |
| if (data->chip == emc1402) { |
| ret = regmap_read(data->regmap, 0x02, ®val); |
| if (ret < 0) |
| break; |
| *val = !!(regval & BIT(channel)); |
| } else { |
| ret = regmap_read(data->regmap, 0x37, ®val); |
| if (ret < 0) |
| break; |
| *val = !!(regval & BIT(channel)); |
| } |
| break; |
| case hwmon_temp_fault: |
| ret = regmap_read(data->regmap, 0x1b, ®val); |
| if (ret < 0) |
| break; |
| *val = !!(regval & BIT(channel)); |
| break; |
| default: |
| return -EOPNOTSUPP; |
| } |
| return ret; |
| } |
| |
| static int emc1403_get_convrate(struct thermal_data *data, long *val) |
| { |
| unsigned int convrate; |
| int ret; |
| |
| ret = regmap_read(data->regmap, 0x04, &convrate); |
| if (ret < 0) |
| return ret; |
| if (convrate > 10) |
| convrate = 4; |
| |
| *val = 16000 >> convrate; |
| return 0; |
| } |
| |
| static int emc1403_chip_read(struct thermal_data *data, u32 attr, long *val) |
| { |
| switch (attr) { |
| case hwmon_chip_update_interval: |
| return emc1403_get_convrate(data, val); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static int emc1403_read(struct device *dev, enum hwmon_sensor_types type, |
| u32 attr, int channel, long *val) |
| { |
| struct thermal_data *data = dev_get_drvdata(dev); |
| |
| switch (type) { |
| case hwmon_temp: |
| return emc1403_temp_read(data, attr, channel, val); |
| case hwmon_chip: |
| return emc1403_chip_read(data, attr, val); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static int emc1403_set_hyst(struct thermal_data *data, long val) |
| { |
| int hyst, ret; |
| long limit; |
| |
| if (data->chip == emc1428) |
| val = clamp_val(val, -128000, 127000); |
| else |
| val = clamp_val(val, 0, 255000); |
| |
| mutex_lock(&data->mutex); |
| ret = __emc1403_get_temp(data, 0, temp_crit, &limit); |
| if (ret < 0) |
| goto unlock; |
| |
| hyst = limit - val; |
| if (data->chip == emc1428) |
| hyst = clamp_val(DIV_ROUND_CLOSEST(hyst, 1000), 0, 127); |
| else |
| hyst = clamp_val(DIV_ROUND_CLOSEST(hyst, 1000), 0, 255); |
| ret = regmap_write(data->regmap, 0x21, hyst); |
| unlock: |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| |
| static int emc1403_set_temp(struct thermal_data *data, int channel, |
| enum emc1403_reg_map map, long val) |
| { |
| unsigned int regval; |
| int ret; |
| u8 regh; |
| s8 regl; |
| |
| regh = emc1403_temp_regs[channel][map]; |
| regl = emc1403_temp_regs_low[channel][map]; |
| |
| mutex_lock(&data->mutex); |
| if (regl >= 0) { |
| if (data->chip == emc1428) |
| val = clamp_val(val, -128000, 127875); |
| else |
| val = clamp_val(val, 0, 255875); |
| regval = DIV_ROUND_CLOSEST(val, 125); |
| ret = regmap_write(data->regmap, regh, (regval >> 3) & 0xff); |
| if (ret < 0) |
| goto unlock; |
| ret = regmap_write(data->regmap, regl, (regval & 0x07) << 5); |
| } else { |
| if (data->chip == emc1428) |
| val = clamp_val(val, -128000, 127000); |
| else |
| val = clamp_val(val, 0, 255000); |
| regval = DIV_ROUND_CLOSEST(val, 1000); |
| ret = regmap_write(data->regmap, regh, regval); |
| } |
| unlock: |
| mutex_unlock(&data->mutex); |
| return ret; |
| } |
| |
| static int emc1403_temp_write(struct thermal_data *data, u32 attr, int channel, long val) |
| { |
| switch (attr) { |
| case hwmon_temp_min: |
| case hwmon_temp_max: |
| case hwmon_temp_crit: |
| return emc1403_set_temp(data, channel, ema1403_temp_map[attr], val); |
| case hwmon_temp_crit_hyst: |
| return emc1403_set_hyst(data, val); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| /* Lookup table for temperature conversion times in msec */ |
| static const u16 ina3221_conv_time[] = { |
| 16000, 8000, 4000, 2000, 1000, 500, 250, 125, 62, 31, 16 |
| }; |
| |
| static int emc1403_set_convrate(struct thermal_data *data, unsigned int interval) |
| { |
| int convrate; |
| |
| convrate = find_closest_descending(interval, ina3221_conv_time, |
| ARRAY_SIZE(ina3221_conv_time)); |
| return regmap_write(data->regmap, 0x04, convrate); |
| } |
| |
| static int emc1403_chip_write(struct thermal_data *data, u32 attr, long val) |
| { |
| switch (attr) { |
| case hwmon_chip_update_interval: |
| return emc1403_set_convrate(data, clamp_val(val, 0, 100000)); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static int emc1403_write(struct device *dev, enum hwmon_sensor_types type, |
| u32 attr, int channel, long val) |
| { |
| struct thermal_data *data = dev_get_drvdata(dev); |
| |
| switch (type) { |
| case hwmon_temp: |
| return emc1403_temp_write(data, attr, channel, val); |
| case hwmon_chip: |
| return emc1403_chip_write(data, attr, val); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static umode_t emc1403_temp_is_visible(const void *_data, u32 attr, int channel) |
| { |
| const struct thermal_data *data = _data; |
| |
| if (data->chip == emc1402 && channel > 1) |
| return 0; |
| if (data->chip == emc1403 && channel > 2) |
| return 0; |
| if (data->chip != emc1428 && channel > 3) |
| return 0; |
| |
| 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_min_hyst: |
| case hwmon_temp_max_hyst: |
| return 0444; |
| case hwmon_temp_min: |
| case hwmon_temp_max: |
| case hwmon_temp_crit: |
| return 0644; |
| case hwmon_temp_crit_hyst: |
| if (channel == 0) |
| return 0644; |
| return 0444; |
| default: |
| return 0; |
| } |
| } |
| |
| static umode_t emc1403_chip_is_visible(const void *_data, u32 attr) |
| { |
| switch (attr) { |
| case hwmon_chip_update_interval: |
| return 0644; |
| default: |
| return 0; |
| } |
| } |
| |
| static umode_t emc1403_is_visible(const void *data, enum hwmon_sensor_types type, |
| u32 attr, int channel) |
| { |
| switch (type) { |
| case hwmon_temp: |
| return emc1403_temp_is_visible(data, attr, channel); |
| case hwmon_chip: |
| return emc1403_chip_is_visible(data, attr); |
| default: |
| return 0; |
| } |
| } |
| |
| static const struct hwmon_channel_info * const emc1403_info[] = { |
| HWMON_CHANNEL_INFO(chip, HWMON_C_UPDATE_INTERVAL), |
| HWMON_CHANNEL_INFO(temp, |
| HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | |
| HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | |
| HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | |
| HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM, |
| HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | |
| HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | |
| HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | |
| HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, |
| HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | |
| HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | |
| HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | |
| HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, |
| HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | |
| HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | |
| HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | |
| HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, |
| HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | |
| HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | |
| HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | |
| HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, |
| HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | |
| HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | |
| HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | |
| HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, |
| HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | |
| HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | |
| HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | |
| HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT, |
| HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | |
| HWMON_T_CRIT | HWMON_T_MIN_HYST | HWMON_T_MAX_HYST | |
| HWMON_T_CRIT_HYST | HWMON_T_MIN_ALARM | |
| HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | HWMON_T_FAULT |
| ), |
| NULL |
| }; |
| |
| static const struct hwmon_ops emc1403_hwmon_ops = { |
| .is_visible = emc1403_is_visible, |
| .read = emc1403_read, |
| .write = emc1403_write, |
| }; |
| |
| static const struct hwmon_chip_info emc1403_chip_info = { |
| .ops = &emc1403_hwmon_ops, |
| .info = emc1403_info, |
| }; |
| |
| /* Last digit of chip name indicates number of channels */ |
| static const struct i2c_device_id emc1403_idtable[] = { |
| { "emc1402", emc1402 }, |
| { "emc1403", emc1403 }, |
| { "emc1404", emc1404 }, |
| { "emc1412", emc1402 }, |
| { "emc1413", emc1403 }, |
| { "emc1414", emc1404 }, |
| { "emc1422", emc1402 }, |
| { "emc1423", emc1403 }, |
| { "emc1424", emc1404 }, |
| { "emc1428", emc1428 }, |
| { "emc1438", emc1428 }, |
| { "emc1442", emc1402 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, emc1403_idtable); |
| |
| static int emc1403_probe(struct i2c_client *client) |
| { |
| struct thermal_data *data; |
| struct device *hwmon_dev; |
| const struct i2c_device_id *id = i2c_match_id(emc1403_idtable, client); |
| |
| data = devm_kzalloc(&client->dev, sizeof(struct thermal_data), |
| GFP_KERNEL); |
| if (!data) |
| return -ENOMEM; |
| |
| data->chip = id->driver_data; |
| data->regmap = devm_regmap_init_i2c(client, &emc1403_regmap_config); |
| if (IS_ERR(data->regmap)) |
| return PTR_ERR(data->regmap); |
| |
| mutex_init(&data->mutex); |
| |
| hwmon_dev = devm_hwmon_device_register_with_info(&client->dev, |
| client->name, data, |
| &emc1403_chip_info, |
| emc1403_groups); |
| return PTR_ERR_OR_ZERO(hwmon_dev); |
| } |
| |
| static const unsigned short emc1403_address_list[] = { |
| 0x18, 0x1c, 0x29, 0x3c, 0x4c, 0x4d, 0x5c, I2C_CLIENT_END |
| }; |
| |
| static struct i2c_driver sensor_emc1403 = { |
| .class = I2C_CLASS_HWMON, |
| .driver = { |
| .name = "emc1403", |
| }, |
| .detect = emc1403_detect, |
| .probe = emc1403_probe, |
| .id_table = emc1403_idtable, |
| .address_list = emc1403_address_list, |
| }; |
| |
| module_i2c_driver(sensor_emc1403); |
| |
| MODULE_AUTHOR("Kalhan Trisal <kalhan.trisal@intel.com"); |
| MODULE_DESCRIPTION("emc1403 Thermal Driver"); |
| MODULE_LICENSE("GPL v2"); |
