OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
linux/drivers/hwmon/f71805f.c

898 lines
24 KiB
C
Raw Blame History

/*
* f71805f.c - driver for the Fintek F71805F/FG Super-I/O chip integrated
* hardware monitoring features
* Copyright (C) 2005 Jean Delvare <khali@linux-fr.org>
*
* The F71805F/FG is a LPC Super-I/O chip made by Fintek. It integrates
* complete hardware monitoring features: voltage, fan and temperature
* sensors, and manual and automatic fan speed control.
*
* 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/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <asm/io.h>
static struct platform_device *pdev;
#define DRVNAME "f71805f"
/*
* Super-I/O constants and functions
*/
#define F71805F_LD_HWM 0x04
#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
#define SIO_F71805F_ID 0x0406
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_select(int base, int ld)
{
outb(SIO_REG_LDSEL, base);
outb(ld, base + 1);
}
static inline void
superio_enter(int base)
{
outb(0x87, base);
outb(0x87, base);
}
static inline void
superio_exit(int base)
{
outb(0xaa, base);
}
/*
* ISA constants
*/
#define REGION_LENGTH 2
#define ADDR_REG_OFFSET 0
#define DATA_REG_OFFSET 1
static struct resource f71805f_resource __initdata = {
.flags = IORESOURCE_IO,
};
/*
* Registers
*/
/* in nr from 0 to 8 (8-bit values) */
#define F71805F_REG_IN(nr) (0x10 + (nr))
#define F71805F_REG_IN_HIGH(nr) (0x40 + 2 * (nr))
#define F71805F_REG_IN_LOW(nr) (0x41 + 2 * (nr))
/* fan nr from 0 to 2 (12-bit values, two registers) */
#define F71805F_REG_FAN(nr) (0x20 + 2 * (nr))
#define F71805F_REG_FAN_LOW(nr) (0x28 + 2 * (nr))
#define F71805F_REG_FAN_CTRL(nr) (0x60 + 16 * (nr))
/* temp nr from 0 to 2 (8-bit values) */
#define F71805F_REG_TEMP(nr) (0x1B + (nr))
#define F71805F_REG_TEMP_HIGH(nr) (0x54 + 2 * (nr))
#define F71805F_REG_TEMP_HYST(nr) (0x55 + 2 * (nr))
#define F71805F_REG_TEMP_MODE 0x01
#define F71805F_REG_START 0x00
/* status nr from 0 to 2 */
#define F71805F_REG_STATUS(nr) (0x36 + (nr))
/*
* Data structures and manipulation thereof
*/
struct f71805f_data {
unsigned short addr;
const char *name;
struct mutex lock;
struct class_device *class_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 in_high[9];
u8 in_low[9];
u16 fan[3];
u16 fan_low[3];
u8 fan_enabled; /* Read once at init time */
u8 temp[3];
u8 temp_high[3];
u8 temp_hyst[3];
u8 temp_mode;
u8 alarms[3];
};
static inline long in_from_reg(u8 reg)
{
return (reg * 8);
}
/* The 2 least significant bits are not used */
static inline u8 in_to_reg(long val)
{
if (val <= 0)
return 0;
if (val >= 2016)
return 0xfc;
return (((val + 16) / 32) << 2);
}
/* in0 is downscaled by a factor 2 internally */
static inline long in0_from_reg(u8 reg)
{
return (reg * 16);
}
static inline u8 in0_to_reg(long val)
{
if (val <= 0)
return 0;
if (val >= 4032)
return 0xfc;
return (((val + 32) / 64) << 2);
}
/* The 4 most significant bits are not used */
static inline long fan_from_reg(u16 reg)
{
reg &= 0xfff;
if (!reg || reg == 0xfff)
return 0;
return (1500000 / reg);
}
static inline u16 fan_to_reg(long rpm)
{
/* If the low limit is set below what the chip can measure,
store the largest possible 12-bit value in the registers,
so that no alarm will ever trigger. */
if (rpm < 367)
return 0xfff;
return (1500000 / rpm);
}
static inline long temp_from_reg(u8 reg)
{
return (reg * 1000);
}
static inline u8 temp_to_reg(long val)
{
if (val < 0)
val = 0;
else if (val > 1000 * 0xff)
val = 0xff;
return ((val + 500) / 1000);
}
/*
* Device I/O access
*/
static u8 f71805f_read8(struct f71805f_data *data, u8 reg)
{
u8 val;
mutex_lock(&data->lock);
outb(reg, data->addr + ADDR_REG_OFFSET);
val = inb(data->addr + DATA_REG_OFFSET);
mutex_unlock(&data->lock);
return val;
}
static void f71805f_write8(struct f71805f_data *data, u8 reg, u8 val)
{
mutex_lock(&data->lock);
outb(reg, data->addr + ADDR_REG_OFFSET);
outb(val, data->addr + DATA_REG_OFFSET);
mutex_unlock(&data->lock);
}
/* It is important to read the MSB first, because doing so latches the
value of the LSB, so we are sure both bytes belong to the same value. */
static u16 f71805f_read16(struct f71805f_data *data, u8 reg)
{
u16 val;
mutex_lock(&data->lock);
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);
mutex_unlock(&data->lock);
return val;
}
static void f71805f_write16(struct f71805f_data *data, u8 reg, u16 val)
{
mutex_lock(&data->lock);
outb(reg, data->addr + ADDR_REG_OFFSET);
outb(val >> 8, data->addr + DATA_REG_OFFSET);
outb(++reg, data->addr + ADDR_REG_OFFSET);
outb(val & 0xff, data->addr + DATA_REG_OFFSET);
mutex_unlock(&data->lock);
}
static struct f71805f_data *f71805f_update_device(struct device *dev)
{
struct f71805f_data *data = dev_get_drvdata(dev);
int nr;
mutex_lock(&data->update_lock);
/* Limit registers cache is refreshed after 60 seconds */
if (time_after(jiffies, data->last_updated + 60 * HZ)
|| !data->valid) {
for (nr = 0; nr < 9; nr++) {
data->in_high[nr] = f71805f_read8(data,
F71805F_REG_IN_HIGH(nr));
data->in_low[nr] = f71805f_read8(data,
F71805F_REG_IN_LOW(nr));
}
for (nr = 0; nr < 3; nr++) {
if (data->fan_enabled & (1 << nr))
data->fan_low[nr] = f71805f_read16(data,
F71805F_REG_FAN_LOW(nr));
}
for (nr = 0; nr < 3; nr++) {
data->temp_high[nr] = f71805f_read8(data,
F71805F_REG_TEMP_HIGH(nr));
data->temp_hyst[nr] = f71805f_read8(data,
F71805F_REG_TEMP_HYST(nr));
}
data->temp_mode = f71805f_read8(data, F71805F_REG_TEMP_MODE);
data->last_limits = jiffies;
}
/* Measurement registers cache is refreshed after 1 second */
if (time_after(jiffies, data->last_updated + HZ)
|| !data->valid) {
for (nr = 0; nr < 9; nr++) {
data->in[nr] = f71805f_read8(data,
F71805F_REG_IN(nr));
}
for (nr = 0; nr < 3; nr++) {
if (data->fan_enabled & (1 << nr))
data->fan[nr] = f71805f_read16(data,
F71805F_REG_FAN(nr));
}
for (nr = 0; nr < 3; nr++) {
data->temp[nr] = f71805f_read8(data,
F71805F_REG_TEMP(nr));
}
for (nr = 0; nr < 3; nr++) {
data->alarms[nr] = f71805f_read8(data,
F71805F_REG_STATUS(nr));
}
data->last_updated = jiffies;
data->valid = 1;
}
mutex_unlock(&data->update_lock);
return data;
}
/*
* Sysfs interface
*/
static ssize_t show_in0(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
return sprintf(buf, "%ld\n", in0_from_reg(data->in[0]));
}
static ssize_t show_in0_max(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
return sprintf(buf, "%ld\n", in0_from_reg(data->in_high[0]));
}
static ssize_t show_in0_min(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
return sprintf(buf, "%ld\n", in0_from_reg(data->in_low[0]));
}
static ssize_t set_in0_max(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71805f_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_high[0] = in0_to_reg(val);
f71805f_write8(data, F71805F_REG_IN_HIGH(0), data->in_high[0]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_in0_min(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71805f_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_low[0] = in0_to_reg(val);
f71805f_write8(data, F71805F_REG_IN_LOW(0), data->in_low[0]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
return sprintf(buf, "%ld\n", in_from_reg(data->in[nr]));
}
static ssize_t show_in_max(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
return sprintf(buf, "%ld\n", in_from_reg(data->in_high[nr]));
}
static ssize_t show_in_min(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
return sprintf(buf, "%ld\n", in_from_reg(data->in_low[nr]));
}
static ssize_t set_in_max(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71805f_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_high[nr] = in_to_reg(val);
f71805f_write8(data, F71805F_REG_IN_HIGH(nr), data->in_high[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_in_min(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71805f_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_low[nr] = in_to_reg(val);
f71805f_write8(data, F71805F_REG_IN_LOW(nr), data->in_low[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
return sprintf(buf, "%ld\n", fan_from_reg(data->fan[nr]));
}
static ssize_t show_fan_min(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
return sprintf(buf, "%ld\n", fan_from_reg(data->fan_low[nr]));
}
static ssize_t set_fan_min(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71805f_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->fan_low[nr] = fan_to_reg(val);
f71805f_write16(data, F71805F_REG_FAN_LOW(nr), data->fan_low[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr]));
}
static ssize_t show_temp_max(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
return sprintf(buf, "%ld\n", temp_from_reg(data->temp_high[nr]));
}
static ssize_t show_temp_hyst(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
return sprintf(buf, "%ld\n", temp_from_reg(data->temp_hyst[nr]));
}
static ssize_t show_temp_type(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
/* 3 is diode, 4 is thermistor */
return sprintf(buf, "%u\n", (data->temp_mode & (1 << nr)) ? 3 : 4);
}
static ssize_t set_temp_max(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71805f_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->temp_high[nr] = temp_to_reg(val);
f71805f_write8(data, F71805F_REG_TEMP_HIGH(nr), data->temp_high[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_temp_hyst(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct f71805f_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
int nr = attr->index;
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->temp_hyst[nr] = temp_to_reg(val);
f71805f_write8(data, F71805F_REG_TEMP_HYST(nr), data->temp_hyst[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_alarms_in(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
return sprintf(buf, "%d\n", data->alarms[0] |
((data->alarms[1] & 0x01) << 8));
}
static ssize_t show_alarms_fan(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
return sprintf(buf, "%d\n", data->alarms[2] & 0x07);
}
static ssize_t show_alarms_temp(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = f71805f_update_device(dev);
return sprintf(buf, "%d\n", (data->alarms[1] >> 3) & 0x07);
}
static ssize_t show_name(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct f71805f_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", data->name);
}
static struct device_attribute f71805f_dev_attr[] = {
__ATTR(in0_input, S_IRUGO, show_in0, NULL),
__ATTR(in0_max, S_IRUGO| S_IWUSR, show_in0_max, set_in0_max),
__ATTR(in0_min, S_IRUGO| S_IWUSR, show_in0_min, set_in0_min),
__ATTR(alarms_in, S_IRUGO, show_alarms_in, NULL),
__ATTR(alarms_fan, S_IRUGO, show_alarms_fan, NULL),
__ATTR(alarms_temp, S_IRUGO, show_alarms_temp, NULL),
__ATTR(name, S_IRUGO, show_name, NULL),
};
static struct sensor_device_attribute f71805f_sensor_attr[] = {
SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
SENSOR_ATTR(in1_max, S_IRUGO | S_IWUSR,
show_in_max, set_in_max, 1),
SENSOR_ATTR(in1_min, S_IRUGO | S_IWUSR,
show_in_min, set_in_min, 1),
SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
SENSOR_ATTR(in2_max, S_IRUGO | S_IWUSR,
show_in_max, set_in_max, 2),
SENSOR_ATTR(in2_min, S_IRUGO | S_IWUSR,
show_in_min, set_in_min, 2),
SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
SENSOR_ATTR(in3_max, S_IRUGO | S_IWUSR,
show_in_max, set_in_max, 3),
SENSOR_ATTR(in3_min, S_IRUGO | S_IWUSR,
show_in_min, set_in_min, 3),
SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
SENSOR_ATTR(in4_max, S_IRUGO | S_IWUSR,
show_in_max, set_in_max, 4),
SENSOR_ATTR(in4_min, S_IRUGO | S_IWUSR,
show_in_min, set_in_min, 4),
SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
SENSOR_ATTR(in5_max, S_IRUGO | S_IWUSR,
show_in_max, set_in_max, 5),
SENSOR_ATTR(in5_min, S_IRUGO | S_IWUSR,
show_in_min, set_in_min, 5),
SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
SENSOR_ATTR(in6_max, S_IRUGO | S_IWUSR,
show_in_max, set_in_max, 6),
SENSOR_ATTR(in6_min, S_IRUGO | S_IWUSR,
show_in_min, set_in_min, 6),
SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
SENSOR_ATTR(in7_max, S_IRUGO | S_IWUSR,
show_in_max, set_in_max, 7),
SENSOR_ATTR(in7_min, S_IRUGO | S_IWUSR,
show_in_min, set_in_min, 7),
SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
SENSOR_ATTR(in8_max, S_IRUGO | S_IWUSR,
show_in_max, set_in_max, 8),
SENSOR_ATTR(in8_min, S_IRUGO | S_IWUSR,
show_in_min, set_in_min, 8),
SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0),
SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
show_temp_max, set_temp_max, 0),
SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
show_temp_hyst, set_temp_hyst, 0),
SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0),
SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
show_temp_max, set_temp_max, 1),
SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR,
show_temp_hyst, set_temp_hyst, 1),
SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1),
SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
show_temp_max, set_temp_max, 2),
SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR,
show_temp_hyst, set_temp_hyst, 2),
SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2),
};
static struct sensor_device_attribute f71805f_fan_attr[] = {
SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
SENSOR_ATTR(fan1_min, S_IRUGO | S_IWUSR,
show_fan_min, set_fan_min, 0),
SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
SENSOR_ATTR(fan2_min, S_IRUGO | S_IWUSR,
show_fan_min, set_fan_min, 1),
SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
SENSOR_ATTR(fan3_min, S_IRUGO | S_IWUSR,
show_fan_min, set_fan_min, 2),
};
/*
* Device registration and initialization
*/
static void __devinit f71805f_init_device(struct f71805f_data *data)
{
u8 reg;
int i;
reg = f71805f_read8(data, F71805F_REG_START);
if ((reg & 0x41) != 0x01) {
printk(KERN_DEBUG DRVNAME ": Starting monitoring "
"operations\n");
f71805f_write8(data, F71805F_REG_START, (reg | 0x01) & ~0x40);
}
/* Fan monitoring can be disabled. If it is, we won't be polling
the register values, and won't create the related sysfs files. */
for (i = 0; i < 3; i++) {
reg = f71805f_read8(data, F71805F_REG_FAN_CTRL(i));
if (!(reg & 0x80))
data->fan_enabled |= (1 << i);
}
}
static int __devinit f71805f_probe(struct platform_device *pdev)
{
struct f71805f_data *data;
struct resource *res;
int i, err;
if (!(data = kzalloc(sizeof(struct f71805f_data), GFP_KERNEL))) {
err = -ENOMEM;
printk(KERN_ERR DRVNAME ": Out of memory\n");
goto exit;
}
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
data->addr = res->start;
mutex_init(&data->lock);
data->name = "f71805f";
mutex_init(&data->update_lock);
platform_set_drvdata(pdev, data);
data->class_dev = hwmon_device_register(&pdev->dev);
if (IS_ERR(data->class_dev)) {
err = PTR_ERR(data->class_dev);
dev_err(&pdev->dev, "Class registration failed (%d)\n", err);
goto exit_free;
}
/* Initialize the F71805F chip */
f71805f_init_device(data);
/* Register sysfs interface files */
for (i = 0; i < ARRAY_SIZE(f71805f_dev_attr); i++) {
err = device_create_file(&pdev->dev, &f71805f_dev_attr[i]);
if (err)
goto exit_class;
}
for (i = 0; i < ARRAY_SIZE(f71805f_sensor_attr); i++) {
err = device_create_file(&pdev->dev,
&f71805f_sensor_attr[i].dev_attr);
if (err)
goto exit_class;
}
for (i = 0; i < ARRAY_SIZE(f71805f_fan_attr); i++) {
if (!(data->fan_enabled & (1 << (i / 2))))
continue;
err = device_create_file(&pdev->dev,
&f71805f_fan_attr[i].dev_attr);
if (err)
goto exit_class;
}
return 0;
exit_class:
dev_err(&pdev->dev, "Sysfs interface creation failed\n");
hwmon_device_unregister(data->class_dev);
exit_free:
kfree(data);
exit:
return err;
}
static int __devexit f71805f_remove(struct platform_device *pdev)
{
struct f71805f_data *data = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, NULL);
hwmon_device_unregister(data->class_dev);
kfree(data);
return 0;
}
static struct platform_driver f71805f_driver = {
.driver = {
.owner = THIS_MODULE,
.name = DRVNAME,
},
.probe = f71805f_probe,
.remove = __devexit_p(f71805f_remove),
};
static int __init f71805f_device_add(unsigned short address)
{
int err;
pdev = platform_device_alloc(DRVNAME, address);
if (!pdev) {
err = -ENOMEM;
printk(KERN_ERR DRVNAME ": Device allocation failed\n");
goto exit;
}
f71805f_resource.start = address;
f71805f_resource.end = address + REGION_LENGTH - 1;
f71805f_resource.name = pdev->name;
err = platform_device_add_resources(pdev, &f71805f_resource, 1);
if (err) {
printk(KERN_ERR DRVNAME ": Device resource addition failed "
"(%d)\n", err);
goto exit_device_put;
}
err = platform_device_add(pdev);
if (err) {
printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
err);
goto exit_device_put;
}
return 0;
exit_device_put:
platform_device_put(pdev);
exit:
return err;
}
static int __init f71805f_find(int sioaddr, unsigned short *address)
{
int err = -ENODEV;
u16 devid;
superio_enter(sioaddr);
devid = superio_inw(sioaddr, SIO_REG_MANID);
if (devid != SIO_FINTEK_ID)
goto exit;
devid = superio_inw(sioaddr, SIO_REG_DEVID);
if (devid != SIO_F71805F_ID) {
printk(KERN_INFO DRVNAME ": Unsupported Fintek device, "
"skipping\n");
goto exit;
}
superio_select(sioaddr, F71805F_LD_HWM);
if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
printk(KERN_WARNING DRVNAME ": Device not activated, "
"skipping\n");
goto exit;
}
*address = superio_inw(sioaddr, SIO_REG_ADDR);
if (*address == 0) {
printk(KERN_WARNING DRVNAME ": Base address not set, "
"skipping\n");
goto exit;
}
err = 0;
printk(KERN_INFO DRVNAME ": Found F71805F chip at %#x, revision %u\n",
*address, superio_inb(sioaddr, SIO_REG_DEVREV));
exit:
superio_exit(sioaddr);
return err;
}
static int __init f71805f_init(void)
{
int err;
unsigned short address;
if (f71805f_find(0x2e, &address)
&& f71805f_find(0x4e, &address))
return -ENODEV;
err = platform_driver_register(&f71805f_driver);
if (err)
goto exit;
/* Sets global pdev as a side effect */
err = f71805f_device_add(address);
if (err)
goto exit_driver;
return 0;
exit_driver:
platform_driver_unregister(&f71805f_driver);
exit:
return err;
}
static void __exit f71805f_exit(void)
{
platform_device_unregister(pdev);
platform_driver_unregister(&f71805f_driver);
}
MODULE_AUTHOR("Jean Delvare <khali@linux-fr>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("F71805F hardware monitoring driver");
module_init(f71805f_init);
module_exit(f71805f_exit);
Reference in New Issue View Git Blame Copy Permalink