403 lines
10 KiB
C
403 lines
10 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* adm1029.c - Part of lm_sensors, Linux kernel modules for hardware monitoring
|
||
|
|
*
|
||
|
|
* Copyright (C) 2006 Corentin LABBE <clabbe.montjoie@gmail.com>
|
||
|
|
*
|
||
|
|
* Based on LM83 Driver by Jean Delvare <jdelvare@suse.de>
|
||
|
|
*
|
||
|
|
* Give only processor, motherboard temperatures and fan tachs
|
||
|
|
* Very rare chip please let me know if you use it
|
||
|
|
*
|
||
|
|
* http://www.analog.com/UploadedFiles/Data_Sheets/ADM1029.pdf
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/jiffies.h>
|
||
|
|
#include <linux/i2c.h>
|
||
|
|
#include <linux/hwmon-sysfs.h>
|
||
|
|
#include <linux/hwmon.h>
|
||
|
|
#include <linux/err.h>
|
||
|
|
#include <linux/mutex.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Addresses to scan
|
||
|
|
*/
|
||
|
|
|
||
|
|
static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
|
||
|
|
0x2e, 0x2f, I2C_CLIENT_END
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The ADM1029 registers
|
||
|
|
* Manufacturer ID is 0x41 for Analog Devices
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define ADM1029_REG_MAN_ID 0x0D
|
||
|
|
#define ADM1029_REG_CHIP_ID 0x0E
|
||
|
|
#define ADM1029_REG_CONFIG 0x01
|
||
|
|
#define ADM1029_REG_NB_FAN_SUPPORT 0x02
|
||
|
|
|
||
|
|
#define ADM1029_REG_TEMP_DEVICES_INSTALLED 0x06
|
||
|
|
|
||
|
|
#define ADM1029_REG_LOCAL_TEMP 0xA0
|
||
|
|
#define ADM1029_REG_REMOTE1_TEMP 0xA1
|
||
|
|
#define ADM1029_REG_REMOTE2_TEMP 0xA2
|
||
|
|
|
||
|
|
#define ADM1029_REG_LOCAL_TEMP_HIGH 0x90
|
||
|
|
#define ADM1029_REG_REMOTE1_TEMP_HIGH 0x91
|
||
|
|
#define ADM1029_REG_REMOTE2_TEMP_HIGH 0x92
|
||
|
|
|
||
|
|
#define ADM1029_REG_LOCAL_TEMP_LOW 0x98
|
||
|
|
#define ADM1029_REG_REMOTE1_TEMP_LOW 0x99
|
||
|
|
#define ADM1029_REG_REMOTE2_TEMP_LOW 0x9A
|
||
|
|
|
||
|
|
#define ADM1029_REG_FAN1 0x70
|
||
|
|
#define ADM1029_REG_FAN2 0x71
|
||
|
|
|
||
|
|
#define ADM1029_REG_FAN1_MIN 0x78
|
||
|
|
#define ADM1029_REG_FAN2_MIN 0x79
|
||
|
|
|
||
|
|
#define ADM1029_REG_FAN1_CONFIG 0x68
|
||
|
|
#define ADM1029_REG_FAN2_CONFIG 0x69
|
||
|
|
|
||
|
|
#define TEMP_FROM_REG(val) ((val) * 1000)
|
||
|
|
|
||
|
|
#define DIV_FROM_REG(val) (1 << (((val) >> 6) - 1))
|
||
|
|
|
||
|
|
/* Registers to be checked by adm1029_update_device() */
|
||
|
|
static const u8 ADM1029_REG_TEMP[] = {
|
||
|
|
ADM1029_REG_LOCAL_TEMP,
|
||
|
|
ADM1029_REG_REMOTE1_TEMP,
|
||
|
|
ADM1029_REG_REMOTE2_TEMP,
|
||
|
|
ADM1029_REG_LOCAL_TEMP_HIGH,
|
||
|
|
ADM1029_REG_REMOTE1_TEMP_HIGH,
|
||
|
|
ADM1029_REG_REMOTE2_TEMP_HIGH,
|
||
|
|
ADM1029_REG_LOCAL_TEMP_LOW,
|
||
|
|
ADM1029_REG_REMOTE1_TEMP_LOW,
|
||
|
|
ADM1029_REG_REMOTE2_TEMP_LOW,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const u8 ADM1029_REG_FAN[] = {
|
||
|
|
ADM1029_REG_FAN1,
|
||
|
|
ADM1029_REG_FAN2,
|
||
|
|
ADM1029_REG_FAN1_MIN,
|
||
|
|
ADM1029_REG_FAN2_MIN,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const u8 ADM1029_REG_FAN_DIV[] = {
|
||
|
|
ADM1029_REG_FAN1_CONFIG,
|
||
|
|
ADM1029_REG_FAN2_CONFIG,
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Client data (each client gets its own)
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct adm1029_data {
|
||
|
|
struct i2c_client *client;
|
||
|
|
struct mutex update_lock; /* protect register access */
|
||
|
|
bool valid; /* false until following fields are valid */
|
||
|
|
unsigned long last_updated; /* in jiffies */
|
||
|
|
|
||
|
|
/* registers values, signed for temperature, unsigned for other stuff */
|
||
|
|
s8 temp[ARRAY_SIZE(ADM1029_REG_TEMP)];
|
||
|
|
u8 fan[ARRAY_SIZE(ADM1029_REG_FAN)];
|
||
|
|
u8 fan_div[ARRAY_SIZE(ADM1029_REG_FAN_DIV)];
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* function that update the status of the chips (temperature for example)
|
||
|
|
*/
|
||
|
|
static struct adm1029_data *adm1029_update_device(struct device *dev)
|
||
|
|
{
|
||
|
|
struct adm1029_data *data = dev_get_drvdata(dev);
|
||
|
|
struct i2c_client *client = data->client;
|
||
|
|
|
||
|
|
mutex_lock(&data->update_lock);
|
||
|
|
/*
|
||
|
|
* Use the "cache" Luke, don't recheck values
|
||
|
|
* if there are already checked not a long time later
|
||
|
|
*/
|
||
|
|
if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
|
||
|
|
int nr;
|
||
|
|
|
||
|
|
dev_dbg(&client->dev, "Updating adm1029 data\n");
|
||
|
|
|
||
|
|
for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_TEMP); nr++) {
|
||
|
|
data->temp[nr] =
|
||
|
|
i2c_smbus_read_byte_data(client,
|
||
|
|
ADM1029_REG_TEMP[nr]);
|
||
|
|
}
|
||
|
|
for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_FAN); nr++) {
|
||
|
|
data->fan[nr] =
|
||
|
|
i2c_smbus_read_byte_data(client,
|
||
|
|
ADM1029_REG_FAN[nr]);
|
||
|
|
}
|
||
|
|
for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_FAN_DIV); nr++) {
|
||
|
|
data->fan_div[nr] =
|
||
|
|
i2c_smbus_read_byte_data(client,
|
||
|
|
ADM1029_REG_FAN_DIV[nr]);
|
||
|
|
}
|
||
|
|
|
||
|
|
data->last_updated = jiffies;
|
||
|
|
data->valid = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_unlock(&data->update_lock);
|
||
|
|
|
||
|
|
return data;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Sysfs stuff
|
||
|
|
*/
|
||
|
|
|
||
|
|
static ssize_t
|
||
|
|
temp_show(struct device *dev, struct device_attribute *devattr, char *buf)
|
||
|
|
{
|
||
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
||
|
|
struct adm1029_data *data = adm1029_update_device(dev);
|
||
|
|
|
||
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t
|
||
|
|
fan_show(struct device *dev, struct device_attribute *devattr, char *buf)
|
||
|
|
{
|
||
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
||
|
|
struct adm1029_data *data = adm1029_update_device(dev);
|
||
|
|
u16 val;
|
||
|
|
|
||
|
|
if (data->fan[attr->index] == 0 ||
|
||
|
|
(data->fan_div[attr->index] & 0xC0) == 0 ||
|
||
|
|
data->fan[attr->index] == 255) {
|
||
|
|
return sprintf(buf, "0\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
val = 1880 * 120 / DIV_FROM_REG(data->fan_div[attr->index])
|
||
|
|
/ data->fan[attr->index];
|
||
|
|
return sprintf(buf, "%d\n", val);
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t
|
||
|
|
fan_div_show(struct device *dev, struct device_attribute *devattr, char *buf)
|
||
|
|
{
|
||
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
||
|
|
struct adm1029_data *data = adm1029_update_device(dev);
|
||
|
|
|
||
|
|
if ((data->fan_div[attr->index] & 0xC0) == 0)
|
||
|
|
return sprintf(buf, "0\n");
|
||
|
|
return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[attr->index]));
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t fan_div_store(struct device *dev,
|
||
|
|
struct device_attribute *devattr,
|
||
|
|
const char *buf, size_t count)
|
||
|
|
{
|
||
|
|
struct adm1029_data *data = dev_get_drvdata(dev);
|
||
|
|
struct i2c_client *client = data->client;
|
||
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
||
|
|
u8 reg;
|
||
|
|
long val;
|
||
|
|
int ret = kstrtol(buf, 10, &val);
|
||
|
|
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
mutex_lock(&data->update_lock);
|
||
|
|
|
||
|
|
/*Read actual config */
|
||
|
|
reg = i2c_smbus_read_byte_data(client,
|
||
|
|
ADM1029_REG_FAN_DIV[attr->index]);
|
||
|
|
|
||
|
|
switch (val) {
|
||
|
|
case 1:
|
||
|
|
val = 1;
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
val = 2;
|
||
|
|
break;
|
||
|
|
case 4:
|
||
|
|
val = 3;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
mutex_unlock(&data->update_lock);
|
||
|
|
dev_err(&client->dev,
|
||
|
|
"fan_div value %ld not supported. Choose one of 1, 2 or 4!\n",
|
||
|
|
val);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
/* Update the value */
|
||
|
|
reg = (reg & 0x3F) | (val << 6);
|
||
|
|
|
||
|
|
/* Update the cache */
|
||
|
|
data->fan_div[attr->index] = reg;
|
||
|
|
|
||
|
|
/* Write value */
|
||
|
|
i2c_smbus_write_byte_data(client,
|
||
|
|
ADM1029_REG_FAN_DIV[attr->index], reg);
|
||
|
|
mutex_unlock(&data->update_lock);
|
||
|
|
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Access rights on sysfs. */
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
|
||
|
|
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_max, temp, 3);
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(temp2_max, temp, 4);
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(temp3_max, temp, 5);
|
||
|
|
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_min, temp, 6);
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(temp2_min, temp, 7);
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(temp3_min, temp, 8);
|
||
|
|
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0);
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1);
|
||
|
|
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_min, fan, 2);
|
||
|
|
static SENSOR_DEVICE_ATTR_RO(fan2_min, fan, 3);
|
||
|
|
|
||
|
|
static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);
|
||
|
|
static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
|
||
|
|
|
||
|
|
static struct attribute *adm1029_attrs[] = {
|
||
|
|
&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_temp2_input.dev_attr.attr,
|
||
|
|
&sensor_dev_attr_temp2_min.dev_attr.attr,
|
||
|
|
&sensor_dev_attr_temp2_max.dev_attr.attr,
|
||
|
|
&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_fan1_input.dev_attr.attr,
|
||
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
||
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
||
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
||
|
|
&sensor_dev_attr_fan1_div.dev_attr.attr,
|
||
|
|
&sensor_dev_attr_fan2_div.dev_attr.attr,
|
||
|
|
NULL
|
||
|
|
};
|
||
|
|
|
||
|
|
ATTRIBUTE_GROUPS(adm1029);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Real code
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */
|
||
|
|
static int adm1029_detect(struct i2c_client *client,
|
||
|
|
struct i2c_board_info *info)
|
||
|
|
{
|
||
|
|
struct i2c_adapter *adapter = client->adapter;
|
||
|
|
u8 man_id, chip_id, temp_devices_installed, nb_fan_support;
|
||
|
|
|
||
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ADM1029 doesn't have CHIP ID, check just MAN ID
|
||
|
|
* For better detection we check also ADM1029_TEMP_DEVICES_INSTALLED,
|
||
|
|
* ADM1029_REG_NB_FAN_SUPPORT and compare it with possible values
|
||
|
|
* documented
|
||
|
|
*/
|
||
|
|
|
||
|
|
man_id = i2c_smbus_read_byte_data(client, ADM1029_REG_MAN_ID);
|
||
|
|
chip_id = i2c_smbus_read_byte_data(client, ADM1029_REG_CHIP_ID);
|
||
|
|
temp_devices_installed = i2c_smbus_read_byte_data(client,
|
||
|
|
ADM1029_REG_TEMP_DEVICES_INSTALLED);
|
||
|
|
nb_fan_support = i2c_smbus_read_byte_data(client,
|
||
|
|
ADM1029_REG_NB_FAN_SUPPORT);
|
||
|
|
/* 0x41 is Analog Devices */
|
||
|
|
if (man_id != 0x41 || (temp_devices_installed & 0xf9) != 0x01 ||
|
||
|
|
nb_fan_support != 0x03)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
if ((chip_id & 0xF0) != 0x00) {
|
||
|
|
/*
|
||
|
|
* There are no "official" CHIP ID, so actually
|
||
|
|
* we use Major/Minor revision for that
|
||
|
|
*/
|
||
|
|
pr_info("Unknown major revision %x, please let us know\n",
|
||
|
|
chip_id);
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
strscpy(info->type, "adm1029", I2C_NAME_SIZE);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adm1029_init_client(struct i2c_client *client)
|
||
|
|
{
|
||
|
|
u8 config;
|
||
|
|
|
||
|
|
config = i2c_smbus_read_byte_data(client, ADM1029_REG_CONFIG);
|
||
|
|
if ((config & 0x10) == 0) {
|
||
|
|
i2c_smbus_write_byte_data(client, ADM1029_REG_CONFIG,
|
||
|
|
config | 0x10);
|
||
|
|
}
|
||
|
|
/* recheck config */
|
||
|
|
config = i2c_smbus_read_byte_data(client, ADM1029_REG_CONFIG);
|
||
|
|
if ((config & 0x10) == 0) {
|
||
|
|
dev_err(&client->dev, "Initialization failed!\n");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adm1029_probe(struct i2c_client *client)
|
||
|
|
{
|
||
|
|
struct device *dev = &client->dev;
|
||
|
|
struct adm1029_data *data;
|
||
|
|
struct device *hwmon_dev;
|
||
|
|
|
||
|
|
data = devm_kzalloc(dev, sizeof(struct adm1029_data), GFP_KERNEL);
|
||
|
|
if (!data)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
data->client = client;
|
||
|
|
mutex_init(&data->update_lock);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Initialize the ADM1029 chip
|
||
|
|
* Check config register
|
||
|
|
*/
|
||
|
|
if (adm1029_init_client(client) == 0)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
|
||
|
|
data,
|
||
|
|
adm1029_groups);
|
||
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct i2c_device_id adm1029_id[] = {
|
||
|
|
{ "adm1029", 0 },
|
||
|
|
{ }
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(i2c, adm1029_id);
|
||
|
|
|
||
|
|
static struct i2c_driver adm1029_driver = {
|
||
|
|
.class = I2C_CLASS_HWMON,
|
||
|
|
.driver = {
|
||
|
|
.name = "adm1029",
|
||
|
|
},
|
||
|
|
.probe_new = adm1029_probe,
|
||
|
|
.id_table = adm1029_id,
|
||
|
|
.detect = adm1029_detect,
|
||
|
|
.address_list = normal_i2c,
|
||
|
|
};
|
||
|
|
|
||
|
|
module_i2c_driver(adm1029_driver);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Corentin LABBE <clabbe.montjoie@gmail.com>");
|
||
|
|
MODULE_DESCRIPTION("adm1029 driver");
|
||
|
|
MODULE_LICENSE("GPL v2");
|