diff options
Diffstat (limited to 'drivers/hwmon/adm9240.c')
| -rw-r--r-- | drivers/hwmon/adm9240.c | 833 |
1 files changed, 833 insertions, 0 deletions
diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c new file mode 100644 index 000000000..40e3558d3 --- /dev/null +++ b/drivers/hwmon/adm9240.c @@ -0,0 +1,833 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * adm9240.c Part of lm_sensors, Linux kernel modules for hardware + * monitoring + * + * Copyright (C) 1999 Frodo Looijaard <frodol@dds.nl> + * Philip Edelbrock <phil@netroedge.com> + * Copyright (C) 2003 Michiel Rook <michiel@grendelproject.nl> + * Copyright (C) 2005 Grant Coady <gcoady.lk@gmail.com> with valuable + * guidance from Jean Delvare + * + * Driver supports Analog Devices ADM9240 + * Dallas Semiconductor DS1780 + * National Semiconductor LM81 + * + * ADM9240 is the reference, DS1780 and LM81 are register compatibles + * + * Voltage Six inputs are scaled by chip, VID also reported + * Temperature Chip temperature to 0.5'C, maximum and max_hysteris + * Fans 2 fans, low speed alarm, automatic fan clock divider + * Alarms 16-bit map of active alarms + * Analog Out 0..1250 mV output + * + * Chassis Intrusion: clear CI latch with 'echo 0 > intrusion0_alarm' + * + * Test hardware: Intel SE440BX-2 desktop motherboard --Grant + * + * LM81 extended temp reading not implemented + */ + +#include <linux/bits.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/hwmon-sysfs.h> +#include <linux/hwmon.h> +#include <linux/hwmon-vid.h> +#include <linux/err.h> +#include <linux/mutex.h> +#include <linux/regmap.h> + +/* Addresses to scan */ +static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, + I2C_CLIENT_END }; + +enum chips { adm9240, ds1780, lm81 }; + +/* ADM9240 registers */ +#define ADM9240_REG_MAN_ID 0x3e +#define ADM9240_REG_DIE_REV 0x3f +#define ADM9240_REG_CONFIG 0x40 + +#define ADM9240_REG_IN(nr) (0x20 + (nr)) /* 0..5 */ +#define ADM9240_REG_IN_MAX(nr) (0x2b + (nr) * 2) +#define ADM9240_REG_IN_MIN(nr) (0x2c + (nr) * 2) +#define ADM9240_REG_FAN(nr) (0x28 + (nr)) /* 0..1 */ +#define ADM9240_REG_FAN_MIN(nr) (0x3b + (nr)) +#define ADM9240_REG_INT(nr) (0x41 + (nr)) +#define ADM9240_REG_INT_MASK(nr) (0x43 + (nr)) +#define ADM9240_REG_TEMP 0x27 +#define ADM9240_REG_TEMP_MAX(nr) (0x39 + (nr)) /* 0, 1 = high, hyst */ +#define ADM9240_REG_ANALOG_OUT 0x19 +#define ADM9240_REG_CHASSIS_CLEAR 0x46 +#define ADM9240_REG_VID_FAN_DIV 0x47 +#define ADM9240_REG_I2C_ADDR 0x48 +#define ADM9240_REG_VID4 0x49 +#define ADM9240_REG_TEMP_CONF 0x4b + +/* generalised scaling with integer rounding */ +static inline int SCALE(long val, int mul, int div) +{ + if (val < 0) + return (val * mul - div / 2) / div; + else + return (val * mul + div / 2) / div; +} + +/* adm9240 internally scales voltage measurements */ +static const u16 nom_mv[] = { 2500, 2700, 3300, 5000, 12000, 2700 }; + +static inline unsigned int IN_FROM_REG(u8 reg, int n) +{ + return SCALE(reg, nom_mv[n], 192); +} + +static inline u8 IN_TO_REG(unsigned long val, int n) +{ + val = clamp_val(val, 0, nom_mv[n] * 255 / 192); + return SCALE(val, 192, nom_mv[n]); +} + +/* temperature range: -40..125, 127 disables temperature alarm */ +static inline s8 TEMP_TO_REG(long val) +{ + val = clamp_val(val, -40000, 127000); + return SCALE(val, 1, 1000); +} + +/* two fans, each with low fan speed limit */ +static inline unsigned int FAN_FROM_REG(u8 reg, u8 div) +{ + if (!reg) /* error */ + return -1; + + if (reg == 255) + return 0; + + return SCALE(1350000, 1, reg * div); +} + +/* analog out 0..1250mV */ +static inline u8 AOUT_TO_REG(unsigned long val) +{ + val = clamp_val(val, 0, 1250); + return SCALE(val, 255, 1250); +} + +static inline unsigned int AOUT_FROM_REG(u8 reg) +{ + return SCALE(reg, 1250, 255); +} + +/* per client data */ +struct adm9240_data { + struct device *dev; + struct regmap *regmap; + struct mutex update_lock; + + u8 fan_div[2]; /* rw fan1_div, read-only accessor */ + u8 vrm; /* -- vrm set on startup, no accessor */ +}; + +/* write new fan div, callers must hold data->update_lock */ +static int adm9240_write_fan_div(struct adm9240_data *data, int channel, u8 fan_div) +{ + unsigned int reg, old, shift = (channel + 2) * 2; + int err; + + err = regmap_read(data->regmap, ADM9240_REG_VID_FAN_DIV, ®); + if (err < 0) + return err; + old = (reg >> shift) & 3; + reg &= ~(3 << shift); + reg |= (fan_div << shift); + err = regmap_write(data->regmap, ADM9240_REG_VID_FAN_DIV, reg); + if (err < 0) + return err; + dev_dbg(data->dev, + "fan%d clock divider changed from %lu to %lu\n", + channel + 1, BIT(old), BIT(fan_div)); + + return 0; +} + +/* + * set fan speed low limit: + * + * - value is zero: disable fan speed low limit alarm + * + * - value is below fan speed measurement range: enable fan speed low + * limit alarm to be asserted while fan speed too slow to measure + * + * - otherwise: select fan clock divider to suit fan speed low limit, + * measurement code may adjust registers to ensure fan speed reading + */ +static int adm9240_fan_min_write(struct adm9240_data *data, int channel, long val) +{ + u8 new_div; + u8 fan_min; + int err; + + mutex_lock(&data->update_lock); + + if (!val) { + fan_min = 255; + new_div = data->fan_div[channel]; + + dev_dbg(data->dev, "fan%u low limit set disabled\n", channel + 1); + } else if (val < 1350000 / (8 * 254)) { + new_div = 3; + fan_min = 254; + + dev_dbg(data->dev, "fan%u low limit set minimum %u\n", + channel + 1, FAN_FROM_REG(254, BIT(new_div))); + } else { + unsigned int new_min = 1350000 / val; + + new_div = 0; + while (new_min > 192 && new_div < 3) { + new_div++; + new_min /= 2; + } + if (!new_min) /* keep > 0 */ + new_min++; + + fan_min = new_min; + + dev_dbg(data->dev, "fan%u low limit set fan speed %u\n", + channel + 1, FAN_FROM_REG(new_min, BIT(new_div))); + } + + if (new_div != data->fan_div[channel]) { + data->fan_div[channel] = new_div; + adm9240_write_fan_div(data, channel, new_div); + } + err = regmap_write(data->regmap, ADM9240_REG_FAN_MIN(channel), fan_min); + + mutex_unlock(&data->update_lock); + + return err; +} + +static ssize_t cpu0_vid_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + unsigned int regval; + int err; + u8 vid; + + err = regmap_read(data->regmap, ADM9240_REG_VID_FAN_DIV, ®val); + if (err < 0) + return err; + vid = regval & 0x0f; + err = regmap_read(data->regmap, ADM9240_REG_VID4, ®val); + if (err < 0) + return err; + vid |= (regval & 1) << 4; + return sprintf(buf, "%d\n", vid_from_reg(vid, data->vrm)); +} +static DEVICE_ATTR_RO(cpu0_vid); + +static ssize_t aout_output_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + unsigned int regval; + int err; + + err = regmap_read(data->regmap, ADM9240_REG_ANALOG_OUT, ®val); + if (err) + return err; + + return sprintf(buf, "%d\n", AOUT_FROM_REG(regval)); +} + +static ssize_t aout_output_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + long val; + int err; + + err = kstrtol(buf, 10, &val); + if (err) + return err; + + err = regmap_write(data->regmap, ADM9240_REG_ANALOG_OUT, AOUT_TO_REG(val)); + return err < 0 ? err : count; +} +static DEVICE_ATTR_RW(aout_output); + +static struct attribute *adm9240_attrs[] = { + &dev_attr_aout_output.attr, + &dev_attr_cpu0_vid.attr, + NULL +}; + +ATTRIBUTE_GROUPS(adm9240); + +/*** sensor chip detect and driver install ***/ + +/* Return 0 if detection is successful, -ENODEV otherwise */ +static int adm9240_detect(struct i2c_client *new_client, + struct i2c_board_info *info) +{ + struct i2c_adapter *adapter = new_client->adapter; + const char *name = ""; + int address = new_client->addr; + u8 man_id, die_rev; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; + + /* verify chip: reg address should match i2c address */ + if (i2c_smbus_read_byte_data(new_client, ADM9240_REG_I2C_ADDR) != address) + return -ENODEV; + + /* check known chip manufacturer */ + man_id = i2c_smbus_read_byte_data(new_client, ADM9240_REG_MAN_ID); + if (man_id == 0x23) + name = "adm9240"; + else if (man_id == 0xda) + name = "ds1780"; + else if (man_id == 0x01) + name = "lm81"; + else + return -ENODEV; + + /* successful detect, print chip info */ + die_rev = i2c_smbus_read_byte_data(new_client, ADM9240_REG_DIE_REV); + dev_info(&adapter->dev, "found %s revision %u\n", + man_id == 0x23 ? "ADM9240" : + man_id == 0xda ? "DS1780" : "LM81", die_rev); + + strscpy(info->type, name, I2C_NAME_SIZE); + + return 0; +} + +static int adm9240_init_client(struct adm9240_data *data) +{ + unsigned int regval; + u8 conf, mode; + int err; + + err = regmap_raw_read(data->regmap, ADM9240_REG_CONFIG, &conf, 1); + if (err < 0) + return err; + err = regmap_raw_read(data->regmap, ADM9240_REG_TEMP_CONF, &mode, 1); + if (err < 0) + return err; + mode &= 3; + + data->vrm = vid_which_vrm(); /* need this to report vid as mV */ + + dev_info(data->dev, "Using VRM: %d.%d\n", data->vrm / 10, + data->vrm % 10); + + if (conf & 1) { /* measurement cycle running: report state */ + + dev_info(data->dev, "status: config 0x%02x mode %u\n", + conf, mode); + + } else { /* cold start: open limits before starting chip */ + int i; + + for (i = 0; i < 6; i++) { + err = regmap_write(data->regmap, + ADM9240_REG_IN_MIN(i), 0); + if (err < 0) + return err; + err = regmap_write(data->regmap, + ADM9240_REG_IN_MAX(i), 255); + if (err < 0) + return err; + } + for (i = 0; i < 2; i++) { + err = regmap_write(data->regmap, + ADM9240_REG_FAN_MIN(i), 255); + if (err < 0) + return err; + } + for (i = 0; i < 2; i++) { + err = regmap_write(data->regmap, + ADM9240_REG_TEMP_MAX(i), 127); + if (err < 0) + return err; + } + + /* start measurement cycle */ + err = regmap_write(data->regmap, ADM9240_REG_CONFIG, 1); + if (err < 0) + return err; + + dev_info(data->dev, + "cold start: config was 0x%02x mode %u\n", conf, mode); + } + + /* read fan divs */ + err = regmap_read(data->regmap, ADM9240_REG_VID_FAN_DIV, ®val); + if (err < 0) + return err; + data->fan_div[0] = (regval >> 4) & 3; + data->fan_div[1] = (regval >> 6) & 3; + return 0; +} + +static int adm9240_chip_read(struct device *dev, u32 attr, long *val) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + u8 regs[2]; + int err; + + switch (attr) { + case hwmon_chip_alarms: + err = regmap_bulk_read(data->regmap, ADM9240_REG_INT(0), ®s, 2); + if (err < 0) + return err; + *val = regs[0] | regs[1] << 8; + break; + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int adm9240_intrusion_read(struct device *dev, u32 attr, long *val) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + unsigned int regval; + int err; + + switch (attr) { + case hwmon_intrusion_alarm: + err = regmap_read(data->regmap, ADM9240_REG_INT(1), ®val); + if (err < 0) + return err; + *val = !!(regval & BIT(4)); + break; + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int adm9240_intrusion_write(struct device *dev, u32 attr, long val) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + int err; + + switch (attr) { + case hwmon_intrusion_alarm: + if (val) + return -EINVAL; + err = regmap_write(data->regmap, ADM9240_REG_CHASSIS_CLEAR, 0x80); + if (err < 0) + return err; + dev_dbg(data->dev, "chassis intrusion latch cleared\n"); + break; + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int adm9240_in_read(struct device *dev, u32 attr, int channel, long *val) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + unsigned int regval; + int reg; + int err; + + switch (attr) { + case hwmon_in_input: + reg = ADM9240_REG_IN(channel); + break; + case hwmon_in_min: + reg = ADM9240_REG_IN_MIN(channel); + break; + case hwmon_in_max: + reg = ADM9240_REG_IN_MAX(channel); + break; + case hwmon_in_alarm: + if (channel < 4) { + reg = ADM9240_REG_INT(0); + } else { + reg = ADM9240_REG_INT(1); + channel -= 4; + } + err = regmap_read(data->regmap, reg, ®val); + if (err < 0) + return err; + *val = !!(regval & BIT(channel)); + return 0; + default: + return -EOPNOTSUPP; + } + err = regmap_read(data->regmap, reg, ®val); + if (err < 0) + return err; + *val = IN_FROM_REG(regval, channel); + return 0; +} + +static int adm9240_in_write(struct device *dev, u32 attr, int channel, long val) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + int reg; + + switch (attr) { + case hwmon_in_min: + reg = ADM9240_REG_IN_MIN(channel); + break; + case hwmon_in_max: + reg = ADM9240_REG_IN_MAX(channel); + break; + default: + return -EOPNOTSUPP; + } + return regmap_write(data->regmap, reg, IN_TO_REG(val, channel)); +} + +static int adm9240_fan_read(struct device *dev, u32 attr, int channel, long *val) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + unsigned int regval; + int err; + + switch (attr) { + case hwmon_fan_input: + mutex_lock(&data->update_lock); + err = regmap_read(data->regmap, ADM9240_REG_FAN(channel), ®val); + if (err < 0) { + mutex_unlock(&data->update_lock); + return err; + } + if (regval == 255 && data->fan_div[channel] < 3) { + /* adjust fan clock divider on overflow */ + err = adm9240_write_fan_div(data, channel, + ++data->fan_div[channel]); + if (err) { + mutex_unlock(&data->update_lock); + return err; + } + } + *val = FAN_FROM_REG(regval, BIT(data->fan_div[channel])); + mutex_unlock(&data->update_lock); + break; + case hwmon_fan_div: + *val = BIT(data->fan_div[channel]); + break; + case hwmon_fan_min: + err = regmap_read(data->regmap, ADM9240_REG_FAN_MIN(channel), ®val); + if (err < 0) + return err; + *val = FAN_FROM_REG(regval, BIT(data->fan_div[channel])); + break; + case hwmon_fan_alarm: + err = regmap_read(data->regmap, ADM9240_REG_INT(0), ®val); + if (err < 0) + return err; + *val = !!(regval & BIT(channel + 6)); + break; + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int adm9240_fan_write(struct device *dev, u32 attr, int channel, long val) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + int err; + + switch (attr) { + case hwmon_fan_min: + err = adm9240_fan_min_write(data, channel, val); + if (err < 0) + return err; + break; + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int adm9240_temp_read(struct device *dev, u32 attr, int channel, long *val) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + unsigned int regval; + int err, temp; + + switch (attr) { + case hwmon_temp_input: + err = regmap_read(data->regmap, ADM9240_REG_TEMP, ®val); + if (err < 0) + return err; + temp = regval << 1; + err = regmap_read(data->regmap, ADM9240_REG_TEMP_CONF, ®val); + if (err < 0) + return err; + temp |= regval >> 7; + *val = sign_extend32(temp, 8) * 500; + break; + case hwmon_temp_max: + err = regmap_read(data->regmap, ADM9240_REG_TEMP_MAX(0), ®val); + if (err < 0) + return err; + *val = (s8)regval * 1000; + break; + case hwmon_temp_max_hyst: + err = regmap_read(data->regmap, ADM9240_REG_TEMP_MAX(1), ®val); + if (err < 0) + return err; + *val = (s8)regval * 1000; + break; + case hwmon_temp_alarm: + err = regmap_read(data->regmap, ADM9240_REG_INT(0), ®val); + if (err < 0) + return err; + *val = !!(regval & BIT(4)); + break; + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int adm9240_temp_write(struct device *dev, u32 attr, int channel, long val) +{ + struct adm9240_data *data = dev_get_drvdata(dev); + int reg; + + switch (attr) { + case hwmon_temp_max: + reg = ADM9240_REG_TEMP_MAX(0); + break; + case hwmon_temp_max_hyst: + reg = ADM9240_REG_TEMP_MAX(1); + break; + default: + return -EOPNOTSUPP; + } + return regmap_write(data->regmap, reg, TEMP_TO_REG(val)); +} + +static int adm9240_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, long *val) +{ + switch (type) { + case hwmon_chip: + return adm9240_chip_read(dev, attr, val); + case hwmon_intrusion: + return adm9240_intrusion_read(dev, attr, val); + case hwmon_in: + return adm9240_in_read(dev, attr, channel, val); + case hwmon_fan: + return adm9240_fan_read(dev, attr, channel, val); + case hwmon_temp: + return adm9240_temp_read(dev, attr, channel, val); + default: + return -EOPNOTSUPP; + } +} + +static int adm9240_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, long val) +{ + switch (type) { + case hwmon_intrusion: + return adm9240_intrusion_write(dev, attr, val); + case hwmon_in: + return adm9240_in_write(dev, attr, channel, val); + case hwmon_fan: + return adm9240_fan_write(dev, attr, channel, val); + case hwmon_temp: + return adm9240_temp_write(dev, attr, channel, val); + default: + return -EOPNOTSUPP; + } +} + +static umode_t adm9240_is_visible(const void *_data, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + umode_t mode = 0; + + switch (type) { + case hwmon_chip: + switch (attr) { + case hwmon_chip_alarms: + mode = 0444; + break; + default: + break; + } + break; + case hwmon_intrusion: + switch (attr) { + case hwmon_intrusion_alarm: + mode = 0644; + break; + default: + break; + } + break; + case hwmon_temp: + switch (attr) { + case hwmon_temp: + case hwmon_temp_alarm: + mode = 0444; + break; + case hwmon_temp_max: + case hwmon_temp_max_hyst: + mode = 0644; + break; + default: + break; + } + break; + case hwmon_fan: + switch (attr) { + case hwmon_fan_input: + case hwmon_fan_div: + case hwmon_fan_alarm: + mode = 0444; + break; + case hwmon_fan_min: + mode = 0644; + break; + default: + break; + } + break; + case hwmon_in: + switch (attr) { + case hwmon_in_input: + case hwmon_in_alarm: + mode = 0444; + break; + case hwmon_in_min: + case hwmon_in_max: + mode = 0644; + break; + default: + break; + } + break; + default: + break; + } + return mode; +} + +static const struct hwmon_ops adm9240_hwmon_ops = { + .is_visible = adm9240_is_visible, + .read = adm9240_read, + .write = adm9240_write, +}; + +static const struct hwmon_channel_info *adm9240_info[] = { + HWMON_CHANNEL_INFO(chip, HWMON_C_ALARMS), + HWMON_CHANNEL_INFO(intrusion, HWMON_INTRUSION_ALARM), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | HWMON_T_ALARM), + HWMON_CHANNEL_INFO(in, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM), + HWMON_CHANNEL_INFO(fan, + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_DIV | HWMON_F_ALARM, + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_DIV | HWMON_F_ALARM), + NULL +}; + +static const struct hwmon_chip_info adm9240_chip_info = { + .ops = &adm9240_hwmon_ops, + .info = adm9240_info, +}; + +static bool adm9240_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case ADM9240_REG_IN(0) ... ADM9240_REG_IN(5): + case ADM9240_REG_FAN(0) ... ADM9240_REG_FAN(1): + case ADM9240_REG_INT(0) ... ADM9240_REG_INT(1): + case ADM9240_REG_TEMP: + case ADM9240_REG_TEMP_CONF: + case ADM9240_REG_VID_FAN_DIV: + case ADM9240_REG_VID4: + case ADM9240_REG_ANALOG_OUT: + return true; + default: + return false; + } +} + +static const struct regmap_config adm9240_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .use_single_read = true, + .use_single_write = true, + .volatile_reg = adm9240_volatile_reg, +}; + +static int adm9240_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct device *hwmon_dev; + struct adm9240_data *data; + int err; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->dev = dev; + mutex_init(&data->update_lock); + data->regmap = devm_regmap_init_i2c(client, &adm9240_regmap_config); + if (IS_ERR(data->regmap)) + return PTR_ERR(data->regmap); + + err = adm9240_init_client(data); + if (err < 0) + return err; + + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, + &adm9240_chip_info, + adm9240_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id adm9240_id[] = { + { "adm9240", adm9240 }, + { "ds1780", ds1780 }, + { "lm81", lm81 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, adm9240_id); + +static struct i2c_driver adm9240_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "adm9240", + }, + .probe_new = adm9240_probe, + .id_table = adm9240_id, + .detect = adm9240_detect, + .address_list = normal_i2c, +}; + +module_i2c_driver(adm9240_driver); + +MODULE_AUTHOR("Michiel Rook <michiel@grendelproject.nl>, " + "Grant Coady <gcoady.lk@gmail.com> and others"); +MODULE_DESCRIPTION("ADM9240/DS1780/LM81 driver"); +MODULE_LICENSE("GPL"); |