forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1112 lines
33 KiB
1112 lines
33 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* nct7802 - Driver for Nuvoton NCT7802Y |
|
* |
|
* Copyright (C) 2014 Guenter Roeck <[email protected]> |
|
*/ |
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
|
|
|
#include <linux/err.h> |
|
#include <linux/i2c.h> |
|
#include <linux/init.h> |
|
#include <linux/hwmon.h> |
|
#include <linux/hwmon-sysfs.h> |
|
#include <linux/jiffies.h> |
|
#include <linux/module.h> |
|
#include <linux/mutex.h> |
|
#include <linux/regmap.h> |
|
#include <linux/slab.h> |
|
|
|
#define DRVNAME "nct7802" |
|
|
|
static const u8 REG_VOLTAGE[5] = { 0x09, 0x0a, 0x0c, 0x0d, 0x0e }; |
|
|
|
static const u8 REG_VOLTAGE_LIMIT_LSB[2][5] = { |
|
{ 0x46, 0x00, 0x40, 0x42, 0x44 }, |
|
{ 0x45, 0x00, 0x3f, 0x41, 0x43 }, |
|
}; |
|
|
|
static const u8 REG_VOLTAGE_LIMIT_MSB[5] = { 0x48, 0x00, 0x47, 0x47, 0x48 }; |
|
|
|
static const u8 REG_VOLTAGE_LIMIT_MSB_SHIFT[2][5] = { |
|
{ 0, 0, 4, 0, 4 }, |
|
{ 2, 0, 6, 2, 6 }, |
|
}; |
|
|
|
#define REG_BANK 0x00 |
|
#define REG_TEMP_LSB 0x05 |
|
#define REG_TEMP_PECI_LSB 0x08 |
|
#define REG_VOLTAGE_LOW 0x0f |
|
#define REG_FANCOUNT_LOW 0x13 |
|
#define REG_START 0x21 |
|
#define REG_MODE 0x22 /* 7.2.32 Mode Selection Register */ |
|
#define REG_PECI_ENABLE 0x23 |
|
#define REG_FAN_ENABLE 0x24 |
|
#define REG_VMON_ENABLE 0x25 |
|
#define REG_PWM(x) (0x60 + (x)) |
|
#define REG_SMARTFAN_EN(x) (0x64 + (x) / 2) |
|
#define SMARTFAN_EN_SHIFT(x) ((x) % 2 * 4) |
|
#define REG_VENDOR_ID 0xfd |
|
#define REG_CHIP_ID 0xfe |
|
#define REG_VERSION_ID 0xff |
|
|
|
/* |
|
* Data structures and manipulation thereof |
|
*/ |
|
|
|
struct nct7802_data { |
|
struct regmap *regmap; |
|
struct mutex access_lock; /* for multi-byte read and write operations */ |
|
u8 in_status; |
|
struct mutex in_alarm_lock; |
|
}; |
|
|
|
static ssize_t temp_type_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
|
unsigned int mode; |
|
int ret; |
|
|
|
ret = regmap_read(data->regmap, REG_MODE, &mode); |
|
if (ret < 0) |
|
return ret; |
|
|
|
return sprintf(buf, "%u\n", (mode >> (2 * sattr->index) & 3) + 2); |
|
} |
|
|
|
static ssize_t temp_type_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
|
unsigned int type; |
|
int err; |
|
|
|
err = kstrtouint(buf, 0, &type); |
|
if (err < 0) |
|
return err; |
|
if (sattr->index == 2 && type != 4) /* RD3 */ |
|
return -EINVAL; |
|
if (type < 3 || type > 4) |
|
return -EINVAL; |
|
err = regmap_update_bits(data->regmap, REG_MODE, |
|
3 << 2 * sattr->index, (type - 2) << 2 * sattr->index); |
|
return err ? : count; |
|
} |
|
|
|
static ssize_t pwm_mode_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
unsigned int regval; |
|
int ret; |
|
|
|
if (sattr->index > 1) |
|
return sprintf(buf, "1\n"); |
|
|
|
ret = regmap_read(data->regmap, 0x5E, ®val); |
|
if (ret < 0) |
|
return ret; |
|
|
|
return sprintf(buf, "%u\n", !(regval & (1 << sattr->index))); |
|
} |
|
|
|
static ssize_t pwm_show(struct device *dev, struct device_attribute *devattr, |
|
char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
unsigned int val; |
|
int ret; |
|
|
|
if (!attr->index) |
|
return sprintf(buf, "255\n"); |
|
|
|
ret = regmap_read(data->regmap, attr->index, &val); |
|
if (ret < 0) |
|
return ret; |
|
|
|
return sprintf(buf, "%d\n", val); |
|
} |
|
|
|
static ssize_t pwm_store(struct device *dev, struct device_attribute *devattr, |
|
const char *buf, size_t count) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
int err; |
|
u8 val; |
|
|
|
err = kstrtou8(buf, 0, &val); |
|
if (err < 0) |
|
return err; |
|
|
|
err = regmap_write(data->regmap, attr->index, val); |
|
return err ? : count; |
|
} |
|
|
|
static ssize_t pwm_enable_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
|
unsigned int reg, enabled; |
|
int ret; |
|
|
|
ret = regmap_read(data->regmap, REG_SMARTFAN_EN(sattr->index), ®); |
|
if (ret < 0) |
|
return ret; |
|
enabled = reg >> SMARTFAN_EN_SHIFT(sattr->index) & 1; |
|
return sprintf(buf, "%u\n", enabled + 1); |
|
} |
|
|
|
static ssize_t pwm_enable_store(struct device *dev, |
|
struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
|
u8 val; |
|
int ret; |
|
|
|
ret = kstrtou8(buf, 0, &val); |
|
if (ret < 0) |
|
return ret; |
|
if (val < 1 || val > 2) |
|
return -EINVAL; |
|
ret = regmap_update_bits(data->regmap, REG_SMARTFAN_EN(sattr->index), |
|
1 << SMARTFAN_EN_SHIFT(sattr->index), |
|
(val - 1) << SMARTFAN_EN_SHIFT(sattr->index)); |
|
return ret ? : count; |
|
} |
|
|
|
static int nct7802_read_temp(struct nct7802_data *data, |
|
u8 reg_temp, u8 reg_temp_low, int *temp) |
|
{ |
|
unsigned int t1, t2 = 0; |
|
int err; |
|
|
|
*temp = 0; |
|
|
|
mutex_lock(&data->access_lock); |
|
err = regmap_read(data->regmap, reg_temp, &t1); |
|
if (err < 0) |
|
goto abort; |
|
t1 <<= 8; |
|
if (reg_temp_low) { /* 11 bit data */ |
|
err = regmap_read(data->regmap, reg_temp_low, &t2); |
|
if (err < 0) |
|
goto abort; |
|
} |
|
t1 |= t2 & 0xe0; |
|
*temp = (s16)t1 / 32 * 125; |
|
abort: |
|
mutex_unlock(&data->access_lock); |
|
return err; |
|
} |
|
|
|
static int nct7802_read_fan(struct nct7802_data *data, u8 reg_fan) |
|
{ |
|
unsigned int f1, f2; |
|
int ret; |
|
|
|
mutex_lock(&data->access_lock); |
|
ret = regmap_read(data->regmap, reg_fan, &f1); |
|
if (ret < 0) |
|
goto abort; |
|
ret = regmap_read(data->regmap, REG_FANCOUNT_LOW, &f2); |
|
if (ret < 0) |
|
goto abort; |
|
ret = (f1 << 5) | (f2 >> 3); |
|
/* convert fan count to rpm */ |
|
if (ret == 0x1fff) /* maximum value, assume fan is stopped */ |
|
ret = 0; |
|
else if (ret) |
|
ret = DIV_ROUND_CLOSEST(1350000U, ret); |
|
abort: |
|
mutex_unlock(&data->access_lock); |
|
return ret; |
|
} |
|
|
|
static int nct7802_read_fan_min(struct nct7802_data *data, u8 reg_fan_low, |
|
u8 reg_fan_high) |
|
{ |
|
unsigned int f1, f2; |
|
int ret; |
|
|
|
mutex_lock(&data->access_lock); |
|
ret = regmap_read(data->regmap, reg_fan_low, &f1); |
|
if (ret < 0) |
|
goto abort; |
|
ret = regmap_read(data->regmap, reg_fan_high, &f2); |
|
if (ret < 0) |
|
goto abort; |
|
ret = f1 | ((f2 & 0xf8) << 5); |
|
/* convert fan count to rpm */ |
|
if (ret == 0x1fff) /* maximum value, assume no limit */ |
|
ret = 0; |
|
else if (ret) |
|
ret = DIV_ROUND_CLOSEST(1350000U, ret); |
|
else |
|
ret = 1350000U; |
|
abort: |
|
mutex_unlock(&data->access_lock); |
|
return ret; |
|
} |
|
|
|
static int nct7802_write_fan_min(struct nct7802_data *data, u8 reg_fan_low, |
|
u8 reg_fan_high, unsigned long limit) |
|
{ |
|
int err; |
|
|
|
if (limit) |
|
limit = DIV_ROUND_CLOSEST(1350000U, limit); |
|
else |
|
limit = 0x1fff; |
|
limit = clamp_val(limit, 0, 0x1fff); |
|
|
|
mutex_lock(&data->access_lock); |
|
err = regmap_write(data->regmap, reg_fan_low, limit & 0xff); |
|
if (err < 0) |
|
goto abort; |
|
|
|
err = regmap_write(data->regmap, reg_fan_high, (limit & 0x1f00) >> 5); |
|
abort: |
|
mutex_unlock(&data->access_lock); |
|
return err; |
|
} |
|
|
|
static u8 nct7802_vmul[] = { 4, 2, 2, 2, 2 }; |
|
|
|
static int nct7802_read_voltage(struct nct7802_data *data, int nr, int index) |
|
{ |
|
unsigned int v1, v2; |
|
int ret; |
|
|
|
mutex_lock(&data->access_lock); |
|
if (index == 0) { /* voltage */ |
|
ret = regmap_read(data->regmap, REG_VOLTAGE[nr], &v1); |
|
if (ret < 0) |
|
goto abort; |
|
ret = regmap_read(data->regmap, REG_VOLTAGE_LOW, &v2); |
|
if (ret < 0) |
|
goto abort; |
|
ret = ((v1 << 2) | (v2 >> 6)) * nct7802_vmul[nr]; |
|
} else { /* limit */ |
|
int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr]; |
|
|
|
ret = regmap_read(data->regmap, |
|
REG_VOLTAGE_LIMIT_LSB[index - 1][nr], &v1); |
|
if (ret < 0) |
|
goto abort; |
|
ret = regmap_read(data->regmap, REG_VOLTAGE_LIMIT_MSB[nr], |
|
&v2); |
|
if (ret < 0) |
|
goto abort; |
|
ret = (v1 | ((v2 << shift) & 0x300)) * nct7802_vmul[nr]; |
|
} |
|
abort: |
|
mutex_unlock(&data->access_lock); |
|
return ret; |
|
} |
|
|
|
static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index, |
|
unsigned long voltage) |
|
{ |
|
int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr]; |
|
int err; |
|
|
|
voltage = clamp_val(voltage, 0, 0x3ff * nct7802_vmul[nr]); |
|
voltage = DIV_ROUND_CLOSEST(voltage, nct7802_vmul[nr]); |
|
|
|
mutex_lock(&data->access_lock); |
|
err = regmap_write(data->regmap, |
|
REG_VOLTAGE_LIMIT_LSB[index - 1][nr], |
|
voltage & 0xff); |
|
if (err < 0) |
|
goto abort; |
|
|
|
err = regmap_update_bits(data->regmap, REG_VOLTAGE_LIMIT_MSB[nr], |
|
0x0300 >> shift, (voltage & 0x0300) >> shift); |
|
abort: |
|
mutex_unlock(&data->access_lock); |
|
return err; |
|
} |
|
|
|
static ssize_t in_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
int voltage; |
|
|
|
voltage = nct7802_read_voltage(data, sattr->nr, sattr->index); |
|
if (voltage < 0) |
|
return voltage; |
|
|
|
return sprintf(buf, "%d\n", voltage); |
|
} |
|
|
|
static ssize_t in_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
int index = sattr->index; |
|
int nr = sattr->nr; |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err < 0) |
|
return err; |
|
|
|
err = nct7802_write_voltage(data, nr, index, val); |
|
return err ? : count; |
|
} |
|
|
|
static ssize_t in_alarm_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
int volt, min, max, ret; |
|
unsigned int val; |
|
|
|
mutex_lock(&data->in_alarm_lock); |
|
|
|
/* |
|
* The SMI Voltage status register is the only register giving a status |
|
* for voltages. A bit is set for each input crossing a threshold, in |
|
* both direction, but the "inside" or "outside" limits info is not |
|
* available. Also this register is cleared on read. |
|
* Note: this is not explicitly spelled out in the datasheet, but |
|
* from experiment. |
|
* To deal with this we use a status cache with one validity bit and |
|
* one status bit for each input. Validity is cleared at startup and |
|
* each time the register reports a change, and the status is processed |
|
* by software based on current input value and limits. |
|
*/ |
|
ret = regmap_read(data->regmap, 0x1e, &val); /* SMI Voltage status */ |
|
if (ret < 0) |
|
goto abort; |
|
|
|
/* invalidate cached status for all inputs crossing a threshold */ |
|
data->in_status &= ~((val & 0x0f) << 4); |
|
|
|
/* if cached status for requested input is invalid, update it */ |
|
if (!(data->in_status & (0x10 << sattr->index))) { |
|
ret = nct7802_read_voltage(data, sattr->nr, 0); |
|
if (ret < 0) |
|
goto abort; |
|
volt = ret; |
|
|
|
ret = nct7802_read_voltage(data, sattr->nr, 1); |
|
if (ret < 0) |
|
goto abort; |
|
min = ret; |
|
|
|
ret = nct7802_read_voltage(data, sattr->nr, 2); |
|
if (ret < 0) |
|
goto abort; |
|
max = ret; |
|
|
|
if (volt < min || volt > max) |
|
data->in_status |= (1 << sattr->index); |
|
else |
|
data->in_status &= ~(1 << sattr->index); |
|
|
|
data->in_status |= 0x10 << sattr->index; |
|
} |
|
|
|
ret = sprintf(buf, "%u\n", !!(data->in_status & (1 << sattr->index))); |
|
abort: |
|
mutex_unlock(&data->in_alarm_lock); |
|
return ret; |
|
} |
|
|
|
static ssize_t temp_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
int err, temp; |
|
|
|
err = nct7802_read_temp(data, sattr->nr, sattr->index, &temp); |
|
if (err < 0) |
|
return err; |
|
|
|
return sprintf(buf, "%d\n", temp); |
|
} |
|
|
|
static ssize_t temp_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
int nr = sattr->nr; |
|
long val; |
|
int err; |
|
|
|
err = kstrtol(buf, 10, &val); |
|
if (err < 0) |
|
return err; |
|
|
|
val = DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), 1000); |
|
|
|
err = regmap_write(data->regmap, nr, val & 0xff); |
|
return err ? : count; |
|
} |
|
|
|
static ssize_t fan_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
int speed; |
|
|
|
speed = nct7802_read_fan(data, sattr->index); |
|
if (speed < 0) |
|
return speed; |
|
|
|
return sprintf(buf, "%d\n", speed); |
|
} |
|
|
|
static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
int speed; |
|
|
|
speed = nct7802_read_fan_min(data, sattr->nr, sattr->index); |
|
if (speed < 0) |
|
return speed; |
|
|
|
return sprintf(buf, "%d\n", speed); |
|
} |
|
|
|
static ssize_t fan_min_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err < 0) |
|
return err; |
|
|
|
err = nct7802_write_fan_min(data, sattr->nr, sattr->index, val); |
|
return err ? : count; |
|
} |
|
|
|
static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
int bit = sattr->index; |
|
unsigned int val; |
|
int ret; |
|
|
|
ret = regmap_read(data->regmap, sattr->nr, &val); |
|
if (ret < 0) |
|
return ret; |
|
|
|
return sprintf(buf, "%u\n", !!(val & (1 << bit))); |
|
} |
|
|
|
static ssize_t |
|
beep_show(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
unsigned int regval; |
|
int err; |
|
|
|
err = regmap_read(data->regmap, sattr->nr, ®val); |
|
if (err) |
|
return err; |
|
|
|
return sprintf(buf, "%u\n", !!(regval & (1 << sattr->index))); |
|
} |
|
|
|
static ssize_t |
|
beep_store(struct device *dev, struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err < 0) |
|
return err; |
|
if (val > 1) |
|
return -EINVAL; |
|
|
|
err = regmap_update_bits(data->regmap, sattr->nr, 1 << sattr->index, |
|
val ? 1 << sattr->index : 0); |
|
return err ? : count; |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR_RW(temp1_type, temp_type, 0); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, 0x01, REG_TEMP_LSB); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, 0x31, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 0x30, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, 0x3a, 0); |
|
|
|
static SENSOR_DEVICE_ATTR_RW(temp2_type, temp_type, 1); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, 0x02, REG_TEMP_LSB); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, 0x33, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 0x32, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, 0x3b, 0); |
|
|
|
static SENSOR_DEVICE_ATTR_RW(temp3_type, temp_type, 2); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, 0x03, REG_TEMP_LSB); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, 0x35, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 0x34, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, 0x3c, 0); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(temp4_input, temp, 0x04, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp4_min, temp, 0x37, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp4_max, temp, 0x36, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp4_crit, temp, 0x3d, 0); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(temp5_input, temp, 0x06, REG_TEMP_PECI_LSB); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp5_min, temp, 0x39, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp5_max, temp, 0x38, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp5_crit, temp, 0x3e, 0); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(temp6_input, temp, 0x07, REG_TEMP_PECI_LSB); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(temp1_min_alarm, alarm, 0x18, 0); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp2_min_alarm, alarm, 0x18, 1); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp3_min_alarm, alarm, 0x18, 2); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp4_min_alarm, alarm, 0x18, 3); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp5_min_alarm, alarm, 0x18, 4); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(temp1_max_alarm, alarm, 0x19, 0); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp2_max_alarm, alarm, 0x19, 1); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp3_max_alarm, alarm, 0x19, 2); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp4_max_alarm, alarm, 0x19, 3); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp5_max_alarm, alarm, 0x19, 4); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(temp1_crit_alarm, alarm, 0x1b, 0); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp2_crit_alarm, alarm, 0x1b, 1); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp3_crit_alarm, alarm, 0x1b, 2); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp4_crit_alarm, alarm, 0x1b, 3); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp5_crit_alarm, alarm, 0x1b, 4); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(temp1_fault, alarm, 0x17, 0); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp2_fault, alarm, 0x17, 1); |
|
static SENSOR_DEVICE_ATTR_2_RO(temp3_fault, alarm, 0x17, 2); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RW(temp1_beep, beep, 0x5c, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp2_beep, beep, 0x5c, 1); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp3_beep, beep, 0x5c, 2); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp4_beep, beep, 0x5c, 3); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp5_beep, beep, 0x5c, 4); |
|
static SENSOR_DEVICE_ATTR_2_RW(temp6_beep, beep, 0x5c, 5); |
|
|
|
static struct attribute *nct7802_temp_attrs[] = { |
|
&sensor_dev_attr_temp1_type.dev_attr.attr, |
|
&sensor_dev_attr_temp1_input.dev_attr.attr, |
|
&sensor_dev_attr_temp1_min.dev_attr.attr, |
|
&sensor_dev_attr_temp1_max.dev_attr.attr, |
|
&sensor_dev_attr_temp1_crit.dev_attr.attr, |
|
&sensor_dev_attr_temp1_min_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp1_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp1_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_temp2_type.dev_attr.attr, /* 10 */ |
|
&sensor_dev_attr_temp2_input.dev_attr.attr, |
|
&sensor_dev_attr_temp2_min.dev_attr.attr, |
|
&sensor_dev_attr_temp2_max.dev_attr.attr, |
|
&sensor_dev_attr_temp2_crit.dev_attr.attr, |
|
&sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp2_max_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp2_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp2_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_temp3_type.dev_attr.attr, /* 20 */ |
|
&sensor_dev_attr_temp3_input.dev_attr.attr, |
|
&sensor_dev_attr_temp3_min.dev_attr.attr, |
|
&sensor_dev_attr_temp3_max.dev_attr.attr, |
|
&sensor_dev_attr_temp3_crit.dev_attr.attr, |
|
&sensor_dev_attr_temp3_min_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp3_max_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp3_fault.dev_attr.attr, |
|
&sensor_dev_attr_temp3_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_temp4_input.dev_attr.attr, /* 30 */ |
|
&sensor_dev_attr_temp4_min.dev_attr.attr, |
|
&sensor_dev_attr_temp4_max.dev_attr.attr, |
|
&sensor_dev_attr_temp4_crit.dev_attr.attr, |
|
&sensor_dev_attr_temp4_min_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp4_max_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp4_crit_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp4_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_temp5_input.dev_attr.attr, /* 38 */ |
|
&sensor_dev_attr_temp5_min.dev_attr.attr, |
|
&sensor_dev_attr_temp5_max.dev_attr.attr, |
|
&sensor_dev_attr_temp5_crit.dev_attr.attr, |
|
&sensor_dev_attr_temp5_min_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp5_max_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp5_crit_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp5_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_temp6_input.dev_attr.attr, /* 46 */ |
|
&sensor_dev_attr_temp6_beep.dev_attr.attr, |
|
|
|
NULL |
|
}; |
|
|
|
static umode_t nct7802_temp_is_visible(struct kobject *kobj, |
|
struct attribute *attr, int index) |
|
{ |
|
struct device *dev = kobj_to_dev(kobj); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
unsigned int reg; |
|
int err; |
|
|
|
err = regmap_read(data->regmap, REG_MODE, ®); |
|
if (err < 0) |
|
return 0; |
|
|
|
if (index < 10 && |
|
(reg & 03) != 0x01 && (reg & 0x03) != 0x02) /* RD1 */ |
|
return 0; |
|
|
|
if (index >= 10 && index < 20 && |
|
(reg & 0x0c) != 0x04 && (reg & 0x0c) != 0x08) /* RD2 */ |
|
return 0; |
|
if (index >= 20 && index < 30 && (reg & 0x30) != 0x20) /* RD3 */ |
|
return 0; |
|
|
|
if (index >= 30 && index < 38) /* local */ |
|
return attr->mode; |
|
|
|
err = regmap_read(data->regmap, REG_PECI_ENABLE, ®); |
|
if (err < 0) |
|
return 0; |
|
|
|
if (index >= 38 && index < 46 && !(reg & 0x01)) /* PECI 0 */ |
|
return 0; |
|
|
|
if (index >= 0x46 && (!(reg & 0x02))) /* PECI 1 */ |
|
return 0; |
|
|
|
return attr->mode; |
|
} |
|
|
|
static const struct attribute_group nct7802_temp_group = { |
|
.attrs = nct7802_temp_attrs, |
|
.is_visible = nct7802_temp_is_visible, |
|
}; |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(in0_input, in, 0, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(in0_min, in, 0, 1); |
|
static SENSOR_DEVICE_ATTR_2_RW(in0_max, in, 0, 2); |
|
static SENSOR_DEVICE_ATTR_2_RO(in0_alarm, in_alarm, 0, 3); |
|
static SENSOR_DEVICE_ATTR_2_RW(in0_beep, beep, 0x5a, 3); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(in1_input, in, 1, 0); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(in2_input, in, 2, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(in2_min, in, 2, 1); |
|
static SENSOR_DEVICE_ATTR_2_RW(in2_max, in, 2, 2); |
|
static SENSOR_DEVICE_ATTR_2_RO(in2_alarm, in_alarm, 2, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(in2_beep, beep, 0x5a, 0); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(in3_input, in, 3, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(in3_min, in, 3, 1); |
|
static SENSOR_DEVICE_ATTR_2_RW(in3_max, in, 3, 2); |
|
static SENSOR_DEVICE_ATTR_2_RO(in3_alarm, in_alarm, 3, 1); |
|
static SENSOR_DEVICE_ATTR_2_RW(in3_beep, beep, 0x5a, 1); |
|
|
|
static SENSOR_DEVICE_ATTR_2_RO(in4_input, in, 4, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(in4_min, in, 4, 1); |
|
static SENSOR_DEVICE_ATTR_2_RW(in4_max, in, 4, 2); |
|
static SENSOR_DEVICE_ATTR_2_RO(in4_alarm, in_alarm, 4, 2); |
|
static SENSOR_DEVICE_ATTR_2_RW(in4_beep, beep, 0x5a, 2); |
|
|
|
static struct attribute *nct7802_in_attrs[] = { |
|
&sensor_dev_attr_in0_input.dev_attr.attr, |
|
&sensor_dev_attr_in0_min.dev_attr.attr, |
|
&sensor_dev_attr_in0_max.dev_attr.attr, |
|
&sensor_dev_attr_in0_alarm.dev_attr.attr, |
|
&sensor_dev_attr_in0_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_in1_input.dev_attr.attr, /* 5 */ |
|
|
|
&sensor_dev_attr_in2_input.dev_attr.attr, /* 6 */ |
|
&sensor_dev_attr_in2_min.dev_attr.attr, |
|
&sensor_dev_attr_in2_max.dev_attr.attr, |
|
&sensor_dev_attr_in2_alarm.dev_attr.attr, |
|
&sensor_dev_attr_in2_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_in3_input.dev_attr.attr, /* 11 */ |
|
&sensor_dev_attr_in3_min.dev_attr.attr, |
|
&sensor_dev_attr_in3_max.dev_attr.attr, |
|
&sensor_dev_attr_in3_alarm.dev_attr.attr, |
|
&sensor_dev_attr_in3_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_in4_input.dev_attr.attr, /* 16 */ |
|
&sensor_dev_attr_in4_min.dev_attr.attr, |
|
&sensor_dev_attr_in4_max.dev_attr.attr, |
|
&sensor_dev_attr_in4_alarm.dev_attr.attr, |
|
&sensor_dev_attr_in4_beep.dev_attr.attr, |
|
|
|
NULL, |
|
}; |
|
|
|
static umode_t nct7802_in_is_visible(struct kobject *kobj, |
|
struct attribute *attr, int index) |
|
{ |
|
struct device *dev = kobj_to_dev(kobj); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
unsigned int reg; |
|
int err; |
|
|
|
if (index < 6) /* VCC, VCORE */ |
|
return attr->mode; |
|
|
|
err = regmap_read(data->regmap, REG_MODE, ®); |
|
if (err < 0) |
|
return 0; |
|
|
|
if (index >= 6 && index < 11 && (reg & 0x03) != 0x03) /* VSEN1 */ |
|
return 0; |
|
if (index >= 11 && index < 16 && (reg & 0x0c) != 0x0c) /* VSEN2 */ |
|
return 0; |
|
if (index >= 16 && (reg & 0x30) != 0x30) /* VSEN3 */ |
|
return 0; |
|
|
|
return attr->mode; |
|
} |
|
|
|
static const struct attribute_group nct7802_in_group = { |
|
.attrs = nct7802_in_attrs, |
|
.is_visible = nct7802_in_is_visible, |
|
}; |
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0x10); |
|
static SENSOR_DEVICE_ATTR_2_RW(fan1_min, fan_min, 0x49, 0x4c); |
|
static SENSOR_DEVICE_ATTR_2_RO(fan1_alarm, alarm, 0x1a, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(fan1_beep, beep, 0x5b, 0); |
|
static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 0x11); |
|
static SENSOR_DEVICE_ATTR_2_RW(fan2_min, fan_min, 0x4a, 0x4d); |
|
static SENSOR_DEVICE_ATTR_2_RO(fan2_alarm, alarm, 0x1a, 1); |
|
static SENSOR_DEVICE_ATTR_2_RW(fan2_beep, beep, 0x5b, 1); |
|
static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 0x12); |
|
static SENSOR_DEVICE_ATTR_2_RW(fan3_min, fan_min, 0x4b, 0x4e); |
|
static SENSOR_DEVICE_ATTR_2_RO(fan3_alarm, alarm, 0x1a, 2); |
|
static SENSOR_DEVICE_ATTR_2_RW(fan3_beep, beep, 0x5b, 2); |
|
|
|
/* 7.2.89 Fan Control Output Type */ |
|
static SENSOR_DEVICE_ATTR_RO(pwm1_mode, pwm_mode, 0); |
|
static SENSOR_DEVICE_ATTR_RO(pwm2_mode, pwm_mode, 1); |
|
static SENSOR_DEVICE_ATTR_RO(pwm3_mode, pwm_mode, 2); |
|
|
|
/* 7.2.91... Fan Control Output Value */ |
|
static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, REG_PWM(0)); |
|
static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, REG_PWM(1)); |
|
static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, REG_PWM(2)); |
|
|
|
/* 7.2.95... Temperature to Fan mapping Relationships Register */ |
|
static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0); |
|
static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1); |
|
static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_enable, 2); |
|
|
|
static struct attribute *nct7802_fan_attrs[] = { |
|
&sensor_dev_attr_fan1_input.dev_attr.attr, |
|
&sensor_dev_attr_fan1_min.dev_attr.attr, |
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan1_beep.dev_attr.attr, |
|
&sensor_dev_attr_fan2_input.dev_attr.attr, |
|
&sensor_dev_attr_fan2_min.dev_attr.attr, |
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan2_beep.dev_attr.attr, |
|
&sensor_dev_attr_fan3_input.dev_attr.attr, |
|
&sensor_dev_attr_fan3_min.dev_attr.attr, |
|
&sensor_dev_attr_fan3_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan3_beep.dev_attr.attr, |
|
|
|
NULL |
|
}; |
|
|
|
static umode_t nct7802_fan_is_visible(struct kobject *kobj, |
|
struct attribute *attr, int index) |
|
{ |
|
struct device *dev = kobj_to_dev(kobj); |
|
struct nct7802_data *data = dev_get_drvdata(dev); |
|
int fan = index / 4; /* 4 attributes per fan */ |
|
unsigned int reg; |
|
int err; |
|
|
|
err = regmap_read(data->regmap, REG_FAN_ENABLE, ®); |
|
if (err < 0 || !(reg & (1 << fan))) |
|
return 0; |
|
|
|
return attr->mode; |
|
} |
|
|
|
static const struct attribute_group nct7802_fan_group = { |
|
.attrs = nct7802_fan_attrs, |
|
.is_visible = nct7802_fan_is_visible, |
|
}; |
|
|
|
static struct attribute *nct7802_pwm_attrs[] = { |
|
&sensor_dev_attr_pwm1_enable.dev_attr.attr, |
|
&sensor_dev_attr_pwm1_mode.dev_attr.attr, |
|
&sensor_dev_attr_pwm1.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_enable.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_mode.dev_attr.attr, |
|
&sensor_dev_attr_pwm2.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_enable.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_mode.dev_attr.attr, |
|
&sensor_dev_attr_pwm3.dev_attr.attr, |
|
NULL |
|
}; |
|
|
|
static const struct attribute_group nct7802_pwm_group = { |
|
.attrs = nct7802_pwm_attrs, |
|
}; |
|
|
|
/* 7.2.115... 0x80-0x83, 0x84 Temperature (X-axis) transition */ |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point1_temp, temp, 0x80, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point2_temp, temp, 0x81, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point3_temp, temp, 0x82, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point4_temp, temp, 0x83, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm1_auto_point5_temp, temp, 0x84, 0); |
|
|
|
/* 7.2.120... 0x85-0x88 PWM (Y-axis) transition */ |
|
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point1_pwm, pwm, 0x85); |
|
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point2_pwm, pwm, 0x86); |
|
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point3_pwm, pwm, 0x87); |
|
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_point4_pwm, pwm, 0x88); |
|
static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point5_pwm, pwm, 0); |
|
|
|
/* 7.2.124 Table 2 X-axis Transition Point 1 Register */ |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point1_temp, temp, 0x90, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point2_temp, temp, 0x91, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point3_temp, temp, 0x92, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point4_temp, temp, 0x93, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm2_auto_point5_temp, temp, 0x94, 0); |
|
|
|
/* 7.2.129 Table 2 Y-axis Transition Point 1 Register */ |
|
static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point1_pwm, pwm, 0x95); |
|
static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point2_pwm, pwm, 0x96); |
|
static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point3_pwm, pwm, 0x97); |
|
static SENSOR_DEVICE_ATTR_RW(pwm2_auto_point4_pwm, pwm, 0x98); |
|
static SENSOR_DEVICE_ATTR_RO(pwm2_auto_point5_pwm, pwm, 0); |
|
|
|
/* 7.2.133 Table 3 X-axis Transition Point 1 Register */ |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point1_temp, temp, 0xA0, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point2_temp, temp, 0xA1, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point3_temp, temp, 0xA2, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point4_temp, temp, 0xA3, 0); |
|
static SENSOR_DEVICE_ATTR_2_RW(pwm3_auto_point5_temp, temp, 0xA4, 0); |
|
|
|
/* 7.2.138 Table 3 Y-axis Transition Point 1 Register */ |
|
static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point1_pwm, pwm, 0xA5); |
|
static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point2_pwm, pwm, 0xA6); |
|
static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point3_pwm, pwm, 0xA7); |
|
static SENSOR_DEVICE_ATTR_RW(pwm3_auto_point4_pwm, pwm, 0xA8); |
|
static SENSOR_DEVICE_ATTR_RO(pwm3_auto_point5_pwm, pwm, 0); |
|
|
|
static struct attribute *nct7802_auto_point_attrs[] = { |
|
&sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, |
|
|
|
&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, |
|
|
|
&sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_auto_point5_temp.dev_attr.attr, |
|
|
|
&sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm2_auto_point5_pwm.dev_attr.attr, |
|
|
|
&sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_auto_point5_temp.dev_attr.attr, |
|
|
|
&sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr, |
|
&sensor_dev_attr_pwm3_auto_point5_pwm.dev_attr.attr, |
|
|
|
NULL |
|
}; |
|
|
|
static const struct attribute_group nct7802_auto_point_group = { |
|
.attrs = nct7802_auto_point_attrs, |
|
}; |
|
|
|
static const struct attribute_group *nct7802_groups[] = { |
|
&nct7802_temp_group, |
|
&nct7802_in_group, |
|
&nct7802_fan_group, |
|
&nct7802_pwm_group, |
|
&nct7802_auto_point_group, |
|
NULL |
|
}; |
|
|
|
static int nct7802_detect(struct i2c_client *client, |
|
struct i2c_board_info *info) |
|
{ |
|
int reg; |
|
|
|
/* |
|
* Chip identification registers are only available in bank 0, |
|
* so only attempt chip detection if bank 0 is selected |
|
*/ |
|
reg = i2c_smbus_read_byte_data(client, REG_BANK); |
|
if (reg != 0x00) |
|
return -ENODEV; |
|
|
|
reg = i2c_smbus_read_byte_data(client, REG_VENDOR_ID); |
|
if (reg != 0x50) |
|
return -ENODEV; |
|
|
|
reg = i2c_smbus_read_byte_data(client, REG_CHIP_ID); |
|
if (reg != 0xc3) |
|
return -ENODEV; |
|
|
|
reg = i2c_smbus_read_byte_data(client, REG_VERSION_ID); |
|
if (reg < 0 || (reg & 0xf0) != 0x20) |
|
return -ENODEV; |
|
|
|
/* Also validate lower bits of voltage and temperature registers */ |
|
reg = i2c_smbus_read_byte_data(client, REG_TEMP_LSB); |
|
if (reg < 0 || (reg & 0x1f)) |
|
return -ENODEV; |
|
|
|
reg = i2c_smbus_read_byte_data(client, REG_TEMP_PECI_LSB); |
|
if (reg < 0 || (reg & 0x3f)) |
|
return -ENODEV; |
|
|
|
reg = i2c_smbus_read_byte_data(client, REG_VOLTAGE_LOW); |
|
if (reg < 0 || (reg & 0x3f)) |
|
return -ENODEV; |
|
|
|
strlcpy(info->type, "nct7802", I2C_NAME_SIZE); |
|
return 0; |
|
} |
|
|
|
static bool nct7802_regmap_is_volatile(struct device *dev, unsigned int reg) |
|
{ |
|
return (reg != REG_BANK && reg <= 0x20) || |
|
(reg >= REG_PWM(0) && reg <= REG_PWM(2)); |
|
} |
|
|
|
static const struct regmap_config nct7802_regmap_config = { |
|
.reg_bits = 8, |
|
.val_bits = 8, |
|
.cache_type = REGCACHE_RBTREE, |
|
.volatile_reg = nct7802_regmap_is_volatile, |
|
}; |
|
|
|
static int nct7802_init_chip(struct nct7802_data *data) |
|
{ |
|
int err; |
|
|
|
/* Enable ADC */ |
|
err = regmap_update_bits(data->regmap, REG_START, 0x01, 0x01); |
|
if (err) |
|
return err; |
|
|
|
/* Enable local temperature sensor */ |
|
err = regmap_update_bits(data->regmap, REG_MODE, 0x40, 0x40); |
|
if (err) |
|
return err; |
|
|
|
/* Enable Vcore and VCC voltage monitoring */ |
|
return regmap_update_bits(data->regmap, REG_VMON_ENABLE, 0x03, 0x03); |
|
} |
|
|
|
static int nct7802_probe(struct i2c_client *client) |
|
{ |
|
struct device *dev = &client->dev; |
|
struct nct7802_data *data; |
|
struct device *hwmon_dev; |
|
int ret; |
|
|
|
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); |
|
if (data == NULL) |
|
return -ENOMEM; |
|
|
|
data->regmap = devm_regmap_init_i2c(client, &nct7802_regmap_config); |
|
if (IS_ERR(data->regmap)) |
|
return PTR_ERR(data->regmap); |
|
|
|
mutex_init(&data->access_lock); |
|
mutex_init(&data->in_alarm_lock); |
|
|
|
ret = nct7802_init_chip(data); |
|
if (ret < 0) |
|
return ret; |
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
|
data, |
|
nct7802_groups); |
|
return PTR_ERR_OR_ZERO(hwmon_dev); |
|
} |
|
|
|
static const unsigned short nct7802_address_list[] = { |
|
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END |
|
}; |
|
|
|
static const struct i2c_device_id nct7802_idtable[] = { |
|
{ "nct7802", 0 }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, nct7802_idtable); |
|
|
|
static struct i2c_driver nct7802_driver = { |
|
.class = I2C_CLASS_HWMON, |
|
.driver = { |
|
.name = DRVNAME, |
|
}, |
|
.detect = nct7802_detect, |
|
.probe_new = nct7802_probe, |
|
.id_table = nct7802_idtable, |
|
.address_list = nct7802_address_list, |
|
}; |
|
|
|
module_i2c_driver(nct7802_driver); |
|
|
|
MODULE_AUTHOR("Guenter Roeck <[email protected]>"); |
|
MODULE_DESCRIPTION("NCT7802Y Hardware Monitoring Driver"); |
|
MODULE_LICENSE("GPL v2");
|
|
|