![Jean Delvare](/assets/img/avatar_default.png)
Kill normal_isa in header files, documentation and all chip drivers, as it is no more used. normal_i2c could be renamed to normal, but I decided not to do so at the moment, so as to limit the number of changes. This might be done later as part of the i2c_probe/i2c_detect merge. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
611 lines
18 KiB
C
611 lines
18 KiB
C
/*
|
|
* lm63.c - driver for the National Semiconductor LM63 temperature sensor
|
|
* with integrated fan control
|
|
* Copyright (C) 2004-2005 Jean Delvare <khali@linux-fr.org>
|
|
* Based on the lm90 driver.
|
|
*
|
|
* The LM63 is a sensor chip made by National Semiconductor. It measures
|
|
* two temperatures (its own and one external one) and the speed of one
|
|
* fan, those speed it can additionally control. Complete datasheet can be
|
|
* obtained from National's website at:
|
|
* http://www.national.com/pf/LM/LM63.html
|
|
*
|
|
* The LM63 is basically an LM86 with fan speed monitoring and control
|
|
* capabilities added. It misses some of the LM86 features though:
|
|
* - No low limit for local temperature.
|
|
* - No critical limit for local temperature.
|
|
* - Critical limit for remote temperature can be changed only once. We
|
|
* will consider that the critical limit is read-only.
|
|
*
|
|
* The datasheet isn't very clear about what the tachometer reading is.
|
|
* I had a explanation from National Semiconductor though. The two lower
|
|
* bits of the read value have to be masked out. The value is still 16 bit
|
|
* in width.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/i2c-sensor.h>
|
|
#include <linux/hwmon-sysfs.h>
|
|
#include <linux/hwmon.h>
|
|
#include <linux/err.h>
|
|
|
|
/*
|
|
* Addresses to scan
|
|
* Address is fully defined internally and cannot be changed.
|
|
*/
|
|
|
|
static unsigned short normal_i2c[] = { 0x4c, I2C_CLIENT_END };
|
|
|
|
/*
|
|
* Insmod parameters
|
|
*/
|
|
|
|
SENSORS_INSMOD_1(lm63);
|
|
|
|
/*
|
|
* The LM63 registers
|
|
*/
|
|
|
|
#define LM63_REG_CONFIG1 0x03
|
|
#define LM63_REG_CONFIG2 0xBF
|
|
#define LM63_REG_CONFIG_FAN 0x4A
|
|
|
|
#define LM63_REG_TACH_COUNT_MSB 0x47
|
|
#define LM63_REG_TACH_COUNT_LSB 0x46
|
|
#define LM63_REG_TACH_LIMIT_MSB 0x49
|
|
#define LM63_REG_TACH_LIMIT_LSB 0x48
|
|
|
|
#define LM63_REG_PWM_VALUE 0x4C
|
|
#define LM63_REG_PWM_FREQ 0x4D
|
|
|
|
#define LM63_REG_LOCAL_TEMP 0x00
|
|
#define LM63_REG_LOCAL_HIGH 0x05
|
|
|
|
#define LM63_REG_REMOTE_TEMP_MSB 0x01
|
|
#define LM63_REG_REMOTE_TEMP_LSB 0x10
|
|
#define LM63_REG_REMOTE_OFFSET_MSB 0x11
|
|
#define LM63_REG_REMOTE_OFFSET_LSB 0x12
|
|
#define LM63_REG_REMOTE_HIGH_MSB 0x07
|
|
#define LM63_REG_REMOTE_HIGH_LSB 0x13
|
|
#define LM63_REG_REMOTE_LOW_MSB 0x08
|
|
#define LM63_REG_REMOTE_LOW_LSB 0x14
|
|
#define LM63_REG_REMOTE_TCRIT 0x19
|
|
#define LM63_REG_REMOTE_TCRIT_HYST 0x21
|
|
|
|
#define LM63_REG_ALERT_STATUS 0x02
|
|
#define LM63_REG_ALERT_MASK 0x16
|
|
|
|
#define LM63_REG_MAN_ID 0xFE
|
|
#define LM63_REG_CHIP_ID 0xFF
|
|
|
|
/*
|
|
* Conversions and various macros
|
|
* For tachometer counts, the LM63 uses 16-bit values.
|
|
* For local temperature and high limit, remote critical limit and hysteresis
|
|
* value, it uses signed 8-bit values with LSB = 1 degree Celsius.
|
|
* For remote temperature, low and high limits, it uses signed 11-bit values
|
|
* with LSB = 0.125 degree Celsius, left-justified in 16-bit registers.
|
|
*/
|
|
|
|
#define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \
|
|
5400000 / (reg))
|
|
#define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \
|
|
(5400000 / (val)) & 0xFFFC)
|
|
#define TEMP8_FROM_REG(reg) ((reg) * 1000)
|
|
#define TEMP8_TO_REG(val) ((val) <= -128000 ? -128 : \
|
|
(val) >= 127000 ? 127 : \
|
|
(val) < 0 ? ((val) - 500) / 1000 : \
|
|
((val) + 500) / 1000)
|
|
#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
|
|
#define TEMP11_TO_REG(val) ((val) <= -128000 ? 0x8000 : \
|
|
(val) >= 127875 ? 0x7FE0 : \
|
|
(val) < 0 ? ((val) - 62) / 125 * 32 : \
|
|
((val) + 62) / 125 * 32)
|
|
#define HYST_TO_REG(val) ((val) <= 0 ? 0 : \
|
|
(val) >= 127000 ? 127 : \
|
|
((val) + 500) / 1000)
|
|
|
|
/*
|
|
* Functions declaration
|
|
*/
|
|
|
|
static int lm63_attach_adapter(struct i2c_adapter *adapter);
|
|
static int lm63_detach_client(struct i2c_client *client);
|
|
|
|
static struct lm63_data *lm63_update_device(struct device *dev);
|
|
|
|
static int lm63_detect(struct i2c_adapter *adapter, int address, int kind);
|
|
static void lm63_init_client(struct i2c_client *client);
|
|
|
|
/*
|
|
* Driver data (common to all clients)
|
|
*/
|
|
|
|
static struct i2c_driver lm63_driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "lm63",
|
|
.flags = I2C_DF_NOTIFY,
|
|
.attach_adapter = lm63_attach_adapter,
|
|
.detach_client = lm63_detach_client,
|
|
};
|
|
|
|
/*
|
|
* Client data (each client gets its own)
|
|
*/
|
|
|
|
struct lm63_data {
|
|
struct i2c_client client;
|
|
struct class_device *class_dev;
|
|
struct semaphore update_lock;
|
|
char valid; /* zero until following fields are valid */
|
|
unsigned long last_updated; /* in jiffies */
|
|
|
|
/* registers values */
|
|
u8 config, config_fan;
|
|
u16 fan[2]; /* 0: input
|
|
1: low limit */
|
|
u8 pwm1_freq;
|
|
u8 pwm1_value;
|
|
s8 temp8[3]; /* 0: local input
|
|
1: local high limit
|
|
2: remote critical limit */
|
|
s16 temp11[3]; /* 0: remote input
|
|
1: remote low limit
|
|
2: remote high limit */
|
|
u8 temp2_crit_hyst;
|
|
u8 alarms;
|
|
};
|
|
|
|
/*
|
|
* Sysfs callback functions and files
|
|
*/
|
|
|
|
static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index]));
|
|
}
|
|
|
|
static ssize_t set_fan(struct device *dev, struct device_attribute *dummy,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct lm63_data *data = i2c_get_clientdata(client);
|
|
unsigned long val = simple_strtoul(buf, NULL, 10);
|
|
|
|
down(&data->update_lock);
|
|
data->fan[1] = FAN_TO_REG(val);
|
|
i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB,
|
|
data->fan[1] & 0xFF);
|
|
i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB,
|
|
data->fan[1] >> 8);
|
|
up(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy,
|
|
char *buf)
|
|
{
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->pwm1_value >= 2 * data->pwm1_freq ?
|
|
255 : (data->pwm1_value * 255 + data->pwm1_freq) /
|
|
(2 * data->pwm1_freq));
|
|
}
|
|
|
|
static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct lm63_data *data = i2c_get_clientdata(client);
|
|
unsigned long val;
|
|
|
|
if (!(data->config_fan & 0x20)) /* register is read-only */
|
|
return -EPERM;
|
|
|
|
val = simple_strtoul(buf, NULL, 10);
|
|
down(&data->update_lock);
|
|
data->pwm1_value = val <= 0 ? 0 :
|
|
val >= 255 ? 2 * data->pwm1_freq :
|
|
(val * data->pwm1_freq * 2 + 127) / 255;
|
|
i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1_value);
|
|
up(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *dummy,
|
|
char *buf)
|
|
{
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2);
|
|
}
|
|
|
|
static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index]));
|
|
}
|
|
|
|
static ssize_t set_temp8(struct device *dev, struct device_attribute *dummy,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct lm63_data *data = i2c_get_clientdata(client);
|
|
long val = simple_strtol(buf, NULL, 10);
|
|
|
|
down(&data->update_lock);
|
|
data->temp8[1] = TEMP8_TO_REG(val);
|
|
i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]);
|
|
up(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[attr->index]));
|
|
}
|
|
|
|
static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
|
|
const char *buf, size_t count)
|
|
{
|
|
static const u8 reg[4] = {
|
|
LM63_REG_REMOTE_LOW_MSB,
|
|
LM63_REG_REMOTE_LOW_LSB,
|
|
LM63_REG_REMOTE_HIGH_MSB,
|
|
LM63_REG_REMOTE_HIGH_LSB,
|
|
};
|
|
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct lm63_data *data = i2c_get_clientdata(client);
|
|
long val = simple_strtol(buf, NULL, 10);
|
|
int nr = attr->index;
|
|
|
|
down(&data->update_lock);
|
|
data->temp11[nr] = TEMP11_TO_REG(val);
|
|
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
|
|
data->temp11[nr] >> 8);
|
|
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
|
|
data->temp11[nr] & 0xff);
|
|
up(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
/* Hysteresis register holds a relative value, while we want to present
|
|
an absolute to user-space */
|
|
static ssize_t show_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy,
|
|
char *buf)
|
|
{
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[2])
|
|
- TEMP8_FROM_REG(data->temp2_crit_hyst));
|
|
}
|
|
|
|
/* And now the other way around, user-space provides an absolute
|
|
hysteresis value and we have to store a relative one */
|
|
static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct lm63_data *data = i2c_get_clientdata(client);
|
|
long val = simple_strtol(buf, NULL, 10);
|
|
long hyst;
|
|
|
|
down(&data->update_lock);
|
|
hyst = TEMP8_FROM_REG(data->temp8[2]) - val;
|
|
i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST,
|
|
HYST_TO_REG(hyst));
|
|
up(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy,
|
|
char *buf)
|
|
{
|
|
struct lm63_data *data = lm63_update_device(dev);
|
|
return sprintf(buf, "%u\n", data->alarms);
|
|
}
|
|
|
|
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan,
|
|
set_fan, 1);
|
|
|
|
static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1);
|
|
static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL);
|
|
|
|
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8,
|
|
set_temp8, 1);
|
|
|
|
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
|
|
set_temp11, 1);
|
|
static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
|
|
set_temp11, 2);
|
|
static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp8, NULL, 2);
|
|
static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst,
|
|
set_temp2_crit_hyst);
|
|
|
|
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
|
|
|
|
/*
|
|
* Real code
|
|
*/
|
|
|
|
static int lm63_attach_adapter(struct i2c_adapter *adapter)
|
|
{
|
|
if (!(adapter->class & I2C_CLASS_HWMON))
|
|
return 0;
|
|
return i2c_detect(adapter, &addr_data, lm63_detect);
|
|
}
|
|
|
|
/*
|
|
* The following function does more than just detection. If detection
|
|
* succeeds, it also registers the new chip.
|
|
*/
|
|
static int lm63_detect(struct i2c_adapter *adapter, int address, int kind)
|
|
{
|
|
struct i2c_client *new_client;
|
|
struct lm63_data *data;
|
|
int err = 0;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
goto exit;
|
|
|
|
if (!(data = kmalloc(sizeof(struct lm63_data), GFP_KERNEL))) {
|
|
err = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
memset(data, 0, sizeof(struct lm63_data));
|
|
|
|
/* The common I2C client data is placed right before the
|
|
LM63-specific data. */
|
|
new_client = &data->client;
|
|
i2c_set_clientdata(new_client, data);
|
|
new_client->addr = address;
|
|
new_client->adapter = adapter;
|
|
new_client->driver = &lm63_driver;
|
|
new_client->flags = 0;
|
|
|
|
/* Default to an LM63 if forced */
|
|
if (kind == 0)
|
|
kind = lm63;
|
|
|
|
if (kind < 0) { /* must identify */
|
|
u8 man_id, chip_id, reg_config1, reg_config2;
|
|
u8 reg_alert_status, reg_alert_mask;
|
|
|
|
man_id = i2c_smbus_read_byte_data(new_client,
|
|
LM63_REG_MAN_ID);
|
|
chip_id = i2c_smbus_read_byte_data(new_client,
|
|
LM63_REG_CHIP_ID);
|
|
reg_config1 = i2c_smbus_read_byte_data(new_client,
|
|
LM63_REG_CONFIG1);
|
|
reg_config2 = i2c_smbus_read_byte_data(new_client,
|
|
LM63_REG_CONFIG2);
|
|
reg_alert_status = i2c_smbus_read_byte_data(new_client,
|
|
LM63_REG_ALERT_STATUS);
|
|
reg_alert_mask = i2c_smbus_read_byte_data(new_client,
|
|
LM63_REG_ALERT_MASK);
|
|
|
|
if (man_id == 0x01 /* National Semiconductor */
|
|
&& chip_id == 0x41 /* LM63 */
|
|
&& (reg_config1 & 0x18) == 0x00
|
|
&& (reg_config2 & 0xF8) == 0x00
|
|
&& (reg_alert_status & 0x20) == 0x00
|
|
&& (reg_alert_mask & 0xA4) == 0xA4) {
|
|
kind = lm63;
|
|
} else { /* failed */
|
|
dev_dbg(&adapter->dev, "Unsupported chip "
|
|
"(man_id=0x%02X, chip_id=0x%02X).\n",
|
|
man_id, chip_id);
|
|
goto exit_free;
|
|
}
|
|
}
|
|
|
|
strlcpy(new_client->name, "lm63", I2C_NAME_SIZE);
|
|
data->valid = 0;
|
|
init_MUTEX(&data->update_lock);
|
|
|
|
/* Tell the I2C layer a new client has arrived */
|
|
if ((err = i2c_attach_client(new_client)))
|
|
goto exit_free;
|
|
|
|
/* Initialize the LM63 chip */
|
|
lm63_init_client(new_client);
|
|
|
|
/* Register sysfs hooks */
|
|
data->class_dev = hwmon_device_register(&new_client->dev);
|
|
if (IS_ERR(data->class_dev)) {
|
|
err = PTR_ERR(data->class_dev);
|
|
goto exit_detach;
|
|
}
|
|
|
|
if (data->config & 0x04) { /* tachometer enabled */
|
|
device_create_file(&new_client->dev,
|
|
&sensor_dev_attr_fan1_input.dev_attr);
|
|
device_create_file(&new_client->dev,
|
|
&sensor_dev_attr_fan1_min.dev_attr);
|
|
}
|
|
device_create_file(&new_client->dev, &dev_attr_pwm1);
|
|
device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
|
|
device_create_file(&new_client->dev,
|
|
&sensor_dev_attr_temp1_input.dev_attr);
|
|
device_create_file(&new_client->dev,
|
|
&sensor_dev_attr_temp2_input.dev_attr);
|
|
device_create_file(&new_client->dev,
|
|
&sensor_dev_attr_temp2_min.dev_attr);
|
|
device_create_file(&new_client->dev,
|
|
&sensor_dev_attr_temp1_max.dev_attr);
|
|
device_create_file(&new_client->dev,
|
|
&sensor_dev_attr_temp2_max.dev_attr);
|
|
device_create_file(&new_client->dev,
|
|
&sensor_dev_attr_temp2_crit.dev_attr);
|
|
device_create_file(&new_client->dev, &dev_attr_temp2_crit_hyst);
|
|
device_create_file(&new_client->dev, &dev_attr_alarms);
|
|
|
|
return 0;
|
|
|
|
exit_detach:
|
|
i2c_detach_client(new_client);
|
|
exit_free:
|
|
kfree(data);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
/* Idealy we shouldn't have to initialize anything, since the BIOS
|
|
should have taken care of everything */
|
|
static void lm63_init_client(struct i2c_client *client)
|
|
{
|
|
struct lm63_data *data = i2c_get_clientdata(client);
|
|
|
|
data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1);
|
|
data->config_fan = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_CONFIG_FAN);
|
|
|
|
/* Start converting if needed */
|
|
if (data->config & 0x40) { /* standby */
|
|
dev_dbg(&client->dev, "Switching to operational mode");
|
|
data->config &= 0xA7;
|
|
i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1,
|
|
data->config);
|
|
}
|
|
|
|
/* We may need pwm1_freq before ever updating the client data */
|
|
data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ);
|
|
if (data->pwm1_freq == 0)
|
|
data->pwm1_freq = 1;
|
|
|
|
/* Show some debug info about the LM63 configuration */
|
|
dev_dbg(&client->dev, "Alert/tach pin configured for %s\n",
|
|
(data->config & 0x04) ? "tachometer input" :
|
|
"alert output");
|
|
dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz\n",
|
|
(data->config_fan & 0x08) ? "1.4" : "360",
|
|
((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq);
|
|
dev_dbg(&client->dev, "PWM output active %s, %s mode\n",
|
|
(data->config_fan & 0x10) ? "low" : "high",
|
|
(data->config_fan & 0x20) ? "manual" : "auto");
|
|
}
|
|
|
|
static int lm63_detach_client(struct i2c_client *client)
|
|
{
|
|
struct lm63_data *data = i2c_get_clientdata(client);
|
|
int err;
|
|
|
|
hwmon_device_unregister(data->class_dev);
|
|
|
|
if ((err = i2c_detach_client(client))) {
|
|
dev_err(&client->dev, "Client deregistration failed, "
|
|
"client not detached\n");
|
|
return err;
|
|
}
|
|
|
|
kfree(data);
|
|
return 0;
|
|
}
|
|
|
|
static struct lm63_data *lm63_update_device(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct lm63_data *data = i2c_get_clientdata(client);
|
|
|
|
down(&data->update_lock);
|
|
|
|
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
|
|
if (data->config & 0x04) { /* tachometer enabled */
|
|
/* order matters for fan1_input */
|
|
data->fan[0] = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_TACH_COUNT_LSB) & 0xFC;
|
|
data->fan[0] |= i2c_smbus_read_byte_data(client,
|
|
LM63_REG_TACH_COUNT_MSB) << 8;
|
|
data->fan[1] = (i2c_smbus_read_byte_data(client,
|
|
LM63_REG_TACH_LIMIT_LSB) & 0xFC)
|
|
| (i2c_smbus_read_byte_data(client,
|
|
LM63_REG_TACH_LIMIT_MSB) << 8);
|
|
}
|
|
|
|
data->pwm1_freq = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_PWM_FREQ);
|
|
if (data->pwm1_freq == 0)
|
|
data->pwm1_freq = 1;
|
|
data->pwm1_value = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_PWM_VALUE);
|
|
|
|
data->temp8[0] = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_LOCAL_TEMP);
|
|
data->temp8[1] = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_LOCAL_HIGH);
|
|
|
|
/* order matters for temp2_input */
|
|
data->temp11[0] = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_REMOTE_TEMP_MSB) << 8;
|
|
data->temp11[0] |= i2c_smbus_read_byte_data(client,
|
|
LM63_REG_REMOTE_TEMP_LSB);
|
|
data->temp11[1] = (i2c_smbus_read_byte_data(client,
|
|
LM63_REG_REMOTE_LOW_MSB) << 8)
|
|
| i2c_smbus_read_byte_data(client,
|
|
LM63_REG_REMOTE_LOW_LSB);
|
|
data->temp11[2] = (i2c_smbus_read_byte_data(client,
|
|
LM63_REG_REMOTE_HIGH_MSB) << 8)
|
|
| i2c_smbus_read_byte_data(client,
|
|
LM63_REG_REMOTE_HIGH_LSB);
|
|
data->temp8[2] = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_REMOTE_TCRIT);
|
|
data->temp2_crit_hyst = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_REMOTE_TCRIT_HYST);
|
|
|
|
data->alarms = i2c_smbus_read_byte_data(client,
|
|
LM63_REG_ALERT_STATUS) & 0x7F;
|
|
|
|
data->last_updated = jiffies;
|
|
data->valid = 1;
|
|
}
|
|
|
|
up(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static int __init sensors_lm63_init(void)
|
|
{
|
|
return i2c_add_driver(&lm63_driver);
|
|
}
|
|
|
|
static void __exit sensors_lm63_exit(void)
|
|
{
|
|
i2c_del_driver(&lm63_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
|
|
MODULE_DESCRIPTION("LM63 driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sensors_lm63_init);
|
|
module_exit(sensors_lm63_exit);
|