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linux-sg2042/drivers/hwmon/f71882fg.c

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/***************************************************************************
* Copyright (C) 2006 by Hans Edgington <hans@edgington.nl> *
* Copyright (C) 2007 by Hans de Goede <j.w.r.degoede@hhs.nl> *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <asm/io.h>
#define DRVNAME "f71882fg"
#define SIO_F71882FG_LD_HWM 0x04 /* Hardware monitor logical device*/
#define SIO_UNLOCK_KEY 0x87 /* Key to enable Super-I/O */
#define SIO_LOCK_KEY 0xAA /* Key to diasble Super-I/O */
#define SIO_REG_LDSEL 0x07 /* Logical device select */
#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
#define SIO_REG_DEVREV 0x22 /* Device revision */
#define SIO_REG_MANID 0x23 /* Fintek ID (2 bytes) */
#define SIO_REG_ENABLE 0x30 /* Logical device enable */
#define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
#define SIO_FINTEK_ID 0x1934 /* Manufacturers ID */
#define SIO_F71882_ID 0x0541 /* Chipset ID */
#define REGION_LENGTH 8
#define ADDR_REG_OFFSET 5
#define DATA_REG_OFFSET 6
#define F71882FG_REG_PECI 0x0A
#define F71882FG_REG_IN_STATUS 0x12
#define F71882FG_REG_IN_BEEP 0x13
#define F71882FG_REG_IN(nr) (0x20 + (nr))
#define F71882FG_REG_IN1_HIGH 0x32
#define F71882FG_REG_FAN(nr) (0xA0 + (16 * (nr)))
#define F71882FG_REG_FAN_STATUS 0x92
#define F71882FG_REG_FAN_BEEP 0x93
#define F71882FG_REG_TEMP(nr) (0x72 + 2 * (nr))
#define F71882FG_REG_TEMP_OVT(nr) (0x82 + 2 * (nr))
#define F71882FG_REG_TEMP_HIGH(nr) (0x83 + 2 * (nr))
#define F71882FG_REG_TEMP_STATUS 0x62
#define F71882FG_REG_TEMP_BEEP 0x63
#define F71882FG_REG_TEMP_HYST1 0x6C
#define F71882FG_REG_TEMP_HYST23 0x6D
#define F71882FG_REG_TEMP_TYPE 0x6B
#define F71882FG_REG_TEMP_DIODE_OPEN 0x6F
#define F71882FG_REG_START 0x01
#define FAN_MIN_DETECT 366 /* Lowest detectable fanspeed */
static unsigned short force_id;
module_param(force_id, ushort, 0);
MODULE_PARM_DESC(force_id, "Override the detected device ID");
static struct platform_device *f71882fg_pdev = NULL;
/* Super-I/O Function prototypes */
static inline int superio_inb(int base, int reg);
static inline int superio_inw(int base, int reg);
static inline void superio_enter(int base);
static inline void superio_select(int base, int ld);
static inline void superio_exit(int base);
struct f71882fg_data {
unsigned short addr;
struct device *hwmon_dev;
struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
unsigned long last_limits; /* In jiffies */
/* Register Values */
u8 in[9];
u8 in1_max;
u8 in_status;
u8 in_beep;
u16 fan[4];
u8 fan_status;
u8 fan_beep;
u8 temp[3];
u8 temp_ovt[3];
u8 temp_high[3];
u8 temp_hyst[3];
u8 temp_type[3];
u8 temp_status;
u8 temp_beep;
u8 temp_diode_open;
};
/* Sysfs in*/
static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
char *buf);
static ssize_t show_in_max(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t store_in_max(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count);
static ssize_t show_in_beep(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t store_in_beep(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count);
static ssize_t show_in_alarm(struct device *dev, struct device_attribute
*devattr, char *buf);
/* Sysfs Fan */
static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
char *buf);
static ssize_t show_fan_beep(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t store_fan_beep(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count);
static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
*devattr, char *buf);
/* Sysfs Temp */
static ssize_t show_temp(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t show_temp_max(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t store_temp_max(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count);
static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count);
static ssize_t show_temp_crit(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t store_temp_crit(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count);
static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t show_temp_type(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t show_temp_beep(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t store_temp_beep(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count);
static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
*devattr, char *buf);
static ssize_t show_temp_fault(struct device *dev, struct device_attribute
*devattr, char *buf);
/* Sysfs misc */
static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
char *buf);
static int __devinit f71882fg_probe(struct platform_device * pdev);
static int __devexit f71882fg_remove(struct platform_device *pdev);
static int __init f71882fg_init(void);
static int __init f71882fg_find(int sioaddr, unsigned short *address);
static int __init f71882fg_device_add(unsigned short address);
static void __exit f71882fg_exit(void);
static struct platform_driver f71882fg_driver = {
.driver = {
.owner = THIS_MODULE,
.name = DRVNAME,
},
.probe = f71882fg_probe,
.remove = __devexit_p(f71882fg_remove),
};
static struct device_attribute f71882fg_dev_attr[] =
{
__ATTR( name, S_IRUGO, show_name, NULL ),
};
static struct sensor_device_attribute f71882fg_in_temp_attr[] =
{
SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
SENSOR_ATTR(in1_max, S_IRUGO|S_IWUSR, show_in_max, store_in_max, 1),
SENSOR_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_in_beep, store_in_beep, 1),
SENSOR_ATTR(in1_alarm, S_IRUGO, show_in_alarm, NULL, 1),
SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
SENSOR_ATTR(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
store_temp_max, 0),
SENSOR_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
store_temp_max_hyst, 0),
SENSOR_ATTR(temp1_crit, S_IRUGO|S_IWUSR, show_temp_crit,
store_temp_crit, 0),
SENSOR_ATTR(temp1_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 0),
SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
SENSOR_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_temp_beep,
store_temp_beep, 0),
SENSOR_ATTR(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0),
SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
SENSOR_ATTR(temp2_max, S_IRUGO|S_IWUSR, show_temp_max,
store_temp_max, 1),
SENSOR_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
store_temp_max_hyst, 1),
SENSOR_ATTR(temp2_crit, S_IRUGO|S_IWUSR, show_temp_crit,
store_temp_crit, 1),
SENSOR_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 1),
SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
SENSOR_ATTR(temp2_beep, S_IRUGO|S_IWUSR, show_temp_beep,
store_temp_beep, 1),
SENSOR_ATTR(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 1),
SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
SENSOR_ATTR(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
store_temp_max, 2),
SENSOR_ATTR(temp3_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
store_temp_max_hyst, 2),
SENSOR_ATTR(temp3_crit, S_IRUGO|S_IWUSR, show_temp_crit,
store_temp_crit, 2),
SENSOR_ATTR(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 2),
SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
SENSOR_ATTR(temp3_beep, S_IRUGO|S_IWUSR, show_temp_beep,
store_temp_beep, 2),
SENSOR_ATTR(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 2),
SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2)
};
static struct sensor_device_attribute f71882fg_fan_attr[] =
{
SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
SENSOR_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_fan_beep,
store_fan_beep, 0),
SENSOR_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0),
SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
SENSOR_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_fan_beep,
store_fan_beep, 1),
SENSOR_ATTR(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 1),
SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
SENSOR_ATTR(fan3_beep, S_IRUGO|S_IWUSR, show_fan_beep,
store_fan_beep, 2),
SENSOR_ATTR(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 2),
SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
SENSOR_ATTR(fan4_beep, S_IRUGO|S_IWUSR, show_fan_beep,
store_fan_beep, 3),
SENSOR_ATTR(fan4_alarm, S_IRUGO, show_fan_alarm, NULL, 3)
};
/* Super I/O functions */
static inline int superio_inb(int base, int reg)
{
outb(reg, base);
return inb(base + 1);
}
static int superio_inw(int base, int reg)
{
int val;
outb(reg++, base);
val = inb(base + 1) << 8;
outb(reg, base);
val |= inb(base + 1);
return val;
}
static inline void superio_enter(int base)
{
/* according to the datasheet the key must be send twice! */
outb( SIO_UNLOCK_KEY, base);
outb( SIO_UNLOCK_KEY, base);
}
static inline void superio_select( int base, int ld)
{
outb(SIO_REG_LDSEL, base);
outb(ld, base + 1);
}
static inline void superio_exit(int base)
{
outb(SIO_LOCK_KEY, base);
}
static inline u16 fan_from_reg(u16 reg)
{
return reg ? (1500000 / reg) : 0;
}
static u8 f71882fg_read8(struct f71882fg_data *data, u8 reg)
{
u8 val;
outb(reg, data->addr + ADDR_REG_OFFSET);
val = inb(data->addr + DATA_REG_OFFSET);
return val;
}
static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg)
{
u16 val;
outb(reg++, data->addr + ADDR_REG_OFFSET);
val = inb(data->addr + DATA_REG_OFFSET) << 8;
outb(reg, data->addr + ADDR_REG_OFFSET);
val |= inb(data->addr + DATA_REG_OFFSET);
return val;
}
static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val)
{
outb(reg, data->addr + ADDR_REG_OFFSET);
outb(val, data->addr + DATA_REG_OFFSET);
}
static struct f71882fg_data *f71882fg_update_device(struct device * dev)
{
struct f71882fg_data *data = dev_get_drvdata(dev);
int nr, reg, reg2;
mutex_lock(&data->update_lock);
/* Update once every 60 seconds */
if ( time_after(jiffies, data->last_limits + 60 * HZ ) ||
!data->valid) {
data->in1_max = f71882fg_read8(data, F71882FG_REG_IN1_HIGH);
data->in_beep = f71882fg_read8(data, F71882FG_REG_IN_BEEP);
/* Get High & boundary temps*/
for (nr = 0; nr < 3; nr++) {
data->temp_ovt[nr] = f71882fg_read8(data,
F71882FG_REG_TEMP_OVT(nr));
data->temp_high[nr] = f71882fg_read8(data,
F71882FG_REG_TEMP_HIGH(nr));
}
/* Have to hardcode hyst*/
data->temp_hyst[0] = f71882fg_read8(data,
F71882FG_REG_TEMP_HYST1) >> 4;
/* Hyst temps 2 & 3 stored in same register */
reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST23);
data->temp_hyst[1] = reg & 0x0F;
data->temp_hyst[2] = reg >> 4;
/* Have to hardcode type, because temp1 is special */
reg = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
reg2 = f71882fg_read8(data, F71882FG_REG_PECI);
if ((reg2 & 0x03) == 0x01)
data->temp_type[0] = 6 /* PECI */;
else if ((reg2 & 0x03) == 0x02)
data->temp_type[0] = 5 /* AMDSI */;
else
data->temp_type[0] = (reg & 0x02) ? 2 : 4;
data->temp_type[1] = (reg & 0x04) ? 2 : 4;
data->temp_type[2] = (reg & 0x08) ? 2 : 4;
data->temp_beep = f71882fg_read8(data, F71882FG_REG_TEMP_BEEP);
data->fan_beep = f71882fg_read8(data, F71882FG_REG_FAN_BEEP);
data->last_limits = jiffies;
}
/* Update every second */
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
data->temp_status = f71882fg_read8(data,
F71882FG_REG_TEMP_STATUS);
data->temp_diode_open = f71882fg_read8(data,
F71882FG_REG_TEMP_DIODE_OPEN);
for (nr = 0; nr < 3; nr++)
data->temp[nr] = f71882fg_read8(data,
F71882FG_REG_TEMP(nr));
data->fan_status = f71882fg_read8(data,
F71882FG_REG_FAN_STATUS);
for (nr = 0; nr < 4; nr++)
data->fan[nr] = f71882fg_read16(data,
F71882FG_REG_FAN(nr));
data->in_status = f71882fg_read8(data,
F71882FG_REG_IN_STATUS);
for (nr = 0; nr < 9; nr++)
data->in[nr] = f71882fg_read8(data,
F71882FG_REG_IN(nr));
data->last_updated = jiffies;
data->valid = 1;
}
mutex_unlock(&data->update_lock);
return data;
}
/* Sysfs Interface */
static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
int speed = fan_from_reg(data->fan[nr]);
if (speed == FAN_MIN_DETECT)
speed = 0;
return sprintf(buf, "%d\n", speed);
}
static ssize_t show_fan_beep(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
if (data->fan_beep & (1 << nr))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static ssize_t store_fan_beep(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71882fg_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(devattr)->index;
int val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
if (val)
data->fan_beep |= 1 << nr;
else
data->fan_beep &= ~(1 << nr);
f71882fg_write8(data, F71882FG_REG_FAN_BEEP, data->fan_beep);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
if (data->fan_status & (1 << nr))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", data->in[nr] * 8);
}
static ssize_t show_in_max(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
return sprintf(buf, "%d\n", data->in1_max * 8);
}
static ssize_t store_in_max(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71882fg_data *data = dev_get_drvdata(dev);
int val = simple_strtoul(buf, NULL, 10) / 8;
if (val > 255)
val = 255;
mutex_lock(&data->update_lock);
f71882fg_write8(data, F71882FG_REG_IN1_HIGH, val);
data->in1_max = val;
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_in_beep(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
if (data->in_beep & (1 << nr))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static ssize_t store_in_beep(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71882fg_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(devattr)->index;
int val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
if (val)
data->in_beep |= 1 << nr;
else
data->in_beep &= ~(1 << nr);
f71882fg_write8(data, F71882FG_REG_IN_BEEP, data->in_beep);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_in_alarm(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
if (data->in_status & (1 << nr))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", data->temp[nr] * 1000);
}
static ssize_t show_temp_max(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", data->temp_high[nr] * 1000);
}
static ssize_t store_temp_max(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71882fg_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(devattr)->index;
int val = simple_strtoul(buf, NULL, 10) / 1000;
if (val > 255)
val = 255;
mutex_lock(&data->update_lock);
f71882fg_write8(data, F71882FG_REG_TEMP_HIGH(nr), val);
data->temp_high[nr] = val;
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n",
(data->temp_high[nr] - data->temp_hyst[nr]) * 1000);
}
static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71882fg_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(devattr)->index;
int val = simple_strtoul(buf, NULL, 10) / 1000;
ssize_t ret = count;
mutex_lock(&data->update_lock);
/* convert abs to relative and check */
val = data->temp_high[nr] - val;
if (val < 0 || val > 15) {
ret = -EINVAL;
goto store_temp_max_hyst_exit;
}
data->temp_hyst[nr] = val;
/* convert value to register contents */
switch (nr) {
case 0:
val = val << 4;
break;
case 1:
val = val | (data->temp_hyst[2] << 4);
break;
case 2:
val = data->temp_hyst[1] | (val << 4);
break;
}
f71882fg_write8(data, nr ? F71882FG_REG_TEMP_HYST23 :
F71882FG_REG_TEMP_HYST1, val);
store_temp_max_hyst_exit:
mutex_unlock(&data->update_lock);
return ret;
}
static ssize_t show_temp_crit(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", data->temp_ovt[nr] * 1000);
}
static ssize_t store_temp_crit(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71882fg_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(devattr)->index;
int val = simple_strtoul(buf, NULL, 10) / 1000;
if (val > 255)
val = 255;
mutex_lock(&data->update_lock);
f71882fg_write8(data, F71882FG_REG_TEMP_OVT(nr), val);
data->temp_ovt[nr] = val;
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n",
(data->temp_ovt[nr] - data->temp_hyst[nr]) * 1000);
}
static ssize_t show_temp_type(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", data->temp_type[nr]);
}
static ssize_t show_temp_beep(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
if (data->temp_beep & (1 << (nr + 1)))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static ssize_t store_temp_beep(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71882fg_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(devattr)->index;
int val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
if (val)
data->temp_beep |= 1 << (nr + 1);
else
data->temp_beep &= ~(1 << (nr + 1));
f71882fg_write8(data, F71882FG_REG_TEMP_BEEP, data->temp_beep);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
if (data->temp_status & (1 << (nr + 1)))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static ssize_t show_temp_fault(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71882fg_data *data = f71882fg_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
if (data->temp_diode_open & (1 << (nr + 1)))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
char *buf)
{
return sprintf(buf, DRVNAME "\n");
}
static int __devinit f71882fg_probe(struct platform_device * pdev)
{
struct f71882fg_data *data;
int err, i;
u8 start_reg;
if (!(data = kzalloc(sizeof(struct f71882fg_data), GFP_KERNEL)))
return -ENOMEM;
data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
mutex_init(&data->update_lock);
platform_set_drvdata(pdev, data);
/* Register sysfs interface files */
for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++) {
err = device_create_file(&pdev->dev, &f71882fg_dev_attr[i]);
if (err)
goto exit_unregister_sysfs;
}
start_reg = f71882fg_read8(data, F71882FG_REG_START);
if (start_reg & 0x01) {
for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++) {
err = device_create_file(&pdev->dev,
&f71882fg_in_temp_attr[i].dev_attr);
if (err)
goto exit_unregister_sysfs;
}
}
if (start_reg & 0x02) {
for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++) {
err = device_create_file(&pdev->dev,
&f71882fg_fan_attr[i].dev_attr);
if (err)
goto exit_unregister_sysfs;
}
}
data->hwmon_dev = hwmon_device_register(&pdev->dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto exit_unregister_sysfs;
}
return 0;
exit_unregister_sysfs:
for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++)
device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]);
for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++)
device_remove_file(&pdev->dev,
&f71882fg_in_temp_attr[i].dev_attr);
for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++)
device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr);
kfree(data);
return err;
}
static int __devexit f71882fg_remove(struct platform_device *pdev)
{
int i;
struct f71882fg_data *data = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, NULL);
hwmon_device_unregister(data->hwmon_dev);
for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++)
device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]);
for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++)
device_remove_file(&pdev->dev,
&f71882fg_in_temp_attr[i].dev_attr);
for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++)
device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr);
kfree(data);
return 0;
}
static int __init f71882fg_find(int sioaddr, unsigned short *address)
{
int err = -ENODEV;
u16 devid;
u8 start_reg;
struct f71882fg_data data;
superio_enter(sioaddr);
devid = superio_inw(sioaddr, SIO_REG_MANID);
if (devid != SIO_FINTEK_ID) {
printk(KERN_INFO DRVNAME ": Not a Fintek device\n");
goto exit;
}
devid = force_id ? force_id : superio_inw(sioaddr, SIO_REG_DEVID);
if (devid != SIO_F71882_ID) {
printk(KERN_INFO DRVNAME ": Unsupported Fintek device\n");
goto exit;
}
superio_select(sioaddr, SIO_F71882FG_LD_HWM);
if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
printk(KERN_WARNING DRVNAME ": Device not activated\n");
goto exit;
}
*address = superio_inw(sioaddr, SIO_REG_ADDR);
if (*address == 0)
{
printk(KERN_WARNING DRVNAME ": Base address not set\n");
goto exit;
}
*address &= ~(REGION_LENGTH - 1); /* Ignore 3 LSB */
data.addr = *address;
start_reg = f71882fg_read8(&data, F71882FG_REG_START);
if (!(start_reg & 0x03)) {
printk(KERN_WARNING DRVNAME
": Hardware monitoring not activated\n");
goto exit;
}
err = 0;
printk(KERN_INFO DRVNAME ": Found F71882FG chip at %#x, revision %d\n",
(unsigned int)*address,
(int)superio_inb(sioaddr, SIO_REG_DEVREV));
exit:
superio_exit(sioaddr);
return err;
}
static int __init f71882fg_device_add(unsigned short address)
{
struct resource res = {
.start = address,
.end = address + REGION_LENGTH - 1,
.flags = IORESOURCE_IO,
};
int err;
f71882fg_pdev = platform_device_alloc(DRVNAME, address);
if (!f71882fg_pdev)
return -ENOMEM;
res.name = f71882fg_pdev->name;
err = platform_device_add_resources(f71882fg_pdev, &res, 1);
if (err) {
printk(KERN_ERR DRVNAME ": Device resource addition failed\n");
goto exit_device_put;
}
err = platform_device_add(f71882fg_pdev);
if (err) {
printk(KERN_ERR DRVNAME ": Device addition failed\n");
goto exit_device_put;
}
return 0;
exit_device_put:
platform_device_put(f71882fg_pdev);
return err;
}
static int __init f71882fg_init(void)
{
int err = -ENODEV;
unsigned short address;
if (f71882fg_find(0x2e, &address) && f71882fg_find(0x4e, &address))
goto exit;
if ((err = platform_driver_register(&f71882fg_driver)))
goto exit;
if ((err = f71882fg_device_add(address)))
goto exit_driver;
return 0;
exit_driver:
platform_driver_unregister(&f71882fg_driver);
exit:
return err;
}
static void __exit f71882fg_exit(void)
{
platform_device_unregister(f71882fg_pdev);
platform_driver_unregister(&f71882fg_driver);
}
MODULE_DESCRIPTION("F71882FG Hardware Monitoring Driver");
MODULE_AUTHOR("Hans Edgington (hans@edgington.nl)");
MODULE_LICENSE("GPL");
module_init(f71882fg_init);
module_exit(f71882fg_exit);
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