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linux/drivers/hwmon/pc87360.c
Jim Cromie f3722d5b6a pc87360: Check for error on sysfs files creation 
pc87360: Check for error on sysfs files creation

Use sysfs_create_group() for 2 sensor-types which are chip-model
invariant, i.e. all-or-nothing attribute groups.
Other 2 groups vary too much due to configuration, etc, so we keep the
loops of device_create_file(), but now check their returns.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28 15:31:17 -07:00

1461 lines
46 KiB
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/*
* pc87360.c - Part of lm_sensors, Linux kernel modules
* for hardware monitoring
* Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
*
* Copied from smsc47m1.c:
* Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
*
* 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.
*
* Supports the following chips:
*
* Chip #vin #fan #pwm #temp devid
* PC87360 - 2 2 - 0xE1
* PC87363 - 2 2 - 0xE8
* PC87364 - 3 3 - 0xE4
* PC87365 11 3 3 2 0xE5
* PC87366 11 3 3 3-4 0xE9
*
* This driver assumes that no more than one chip is present, and one of
* the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-isa.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <asm/io.h>
static u8 devid;
static unsigned short address;
static unsigned short extra_isa[3];
static u8 confreg[4];
enum chips { any_chip, pc87360, pc87363, pc87364, pc87365, pc87366 };
static int init = 1;
module_param(init, int, 0);
MODULE_PARM_DESC(init,
"Chip initialization level:\n"
" 0: None\n"
"*1: Forcibly enable internal voltage and temperature channels, except in9\n"
" 2: Forcibly enable all voltage and temperature channels, except in9\n"
" 3: Forcibly enable all voltage and temperature channels, including in9");
/*
* Super-I/O registers and operations
*/
#define DEV 0x07 /* Register: Logical device select */
#define DEVID 0x20 /* Register: Device ID */
#define ACT 0x30 /* Register: Device activation */
#define BASE 0x60 /* Register: Base address */
#define FSCM 0x09 /* Logical device: fans */
#define VLM 0x0d /* Logical device: voltages */
#define TMS 0x0e /* Logical device: temperatures */
static const u8 logdev[3] = { FSCM, VLM, TMS };
#define LD_FAN 0
#define LD_IN 1
#define LD_TEMP 2
static inline void superio_outb(int sioaddr, int reg, int val)
{
outb(reg, sioaddr);
outb(val, sioaddr+1);
}
static inline int superio_inb(int sioaddr, int reg)
{
outb(reg, sioaddr);
return inb(sioaddr+1);
}
static inline void superio_exit(int sioaddr)
{
outb(0x02, sioaddr);
outb(0x02, sioaddr+1);
}
/*
* Logical devices
*/
#define PC87360_EXTENT 0x10
#define PC87365_REG_BANK 0x09
#define NO_BANK 0xff
/*
* Fan registers and conversions
*/
/* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
#define PC87360_REG_PRESCALE(nr) (0x00 + 2 * (nr))
#define PC87360_REG_PWM(nr) (0x01 + 2 * (nr))
#define PC87360_REG_FAN_MIN(nr) (0x06 + 3 * (nr))
#define PC87360_REG_FAN(nr) (0x07 + 3 * (nr))
#define PC87360_REG_FAN_STATUS(nr) (0x08 + 3 * (nr))
#define FAN_FROM_REG(val,div) ((val) == 0 ? 0: \
480000 / ((val)*(div)))
#define FAN_TO_REG(val,div) ((val) <= 100 ? 0 : \
480000 / ((val)*(div)))
#define FAN_DIV_FROM_REG(val) (1 << ((val >> 5) & 0x03))
#define FAN_STATUS_FROM_REG(val) ((val) & 0x07)
#define FAN_CONFIG_MONITOR(val,nr) (((val) >> (2 + nr * 3)) & 1)
#define FAN_CONFIG_CONTROL(val,nr) (((val) >> (3 + nr * 3)) & 1)
#define FAN_CONFIG_INVERT(val,nr) (((val) >> (4 + nr * 3)) & 1)
#define PWM_FROM_REG(val,inv) ((inv) ? 255 - (val) : (val))
static inline u8 PWM_TO_REG(int val, int inv)
{
if (inv)
val = 255 - val;
if (val < 0)
return 0;
if (val > 255)
return 255;
return val;
}
/*
* Voltage registers and conversions
*/
#define PC87365_REG_IN_CONVRATE 0x07
#define PC87365_REG_IN_CONFIG 0x08
#define PC87365_REG_IN 0x0B
#define PC87365_REG_IN_MIN 0x0D
#define PC87365_REG_IN_MAX 0x0C
#define PC87365_REG_IN_STATUS 0x0A
#define PC87365_REG_IN_ALARMS1 0x00
#define PC87365_REG_IN_ALARMS2 0x01
#define PC87365_REG_VID 0x06
#define IN_FROM_REG(val,ref) (((val) * (ref) + 128) / 256)
#define IN_TO_REG(val,ref) ((val) < 0 ? 0 : \
(val)*256 >= (ref)*255 ? 255: \
((val) * 256 + (ref)/2) / (ref))
/*
* Temperature registers and conversions
*/
#define PC87365_REG_TEMP_CONFIG 0x08
#define PC87365_REG_TEMP 0x0B
#define PC87365_REG_TEMP_MIN 0x0D
#define PC87365_REG_TEMP_MAX 0x0C
#define PC87365_REG_TEMP_CRIT 0x0E
#define PC87365_REG_TEMP_STATUS 0x0A
#define PC87365_REG_TEMP_ALARMS 0x00
#define TEMP_FROM_REG(val) ((val) * 1000)
#define TEMP_TO_REG(val) ((val) < -55000 ? -55 : \
(val) > 127000 ? 127 : \
(val) < 0 ? ((val) - 500) / 1000 : \
((val) + 500) / 1000)
/*
* Client data (each client gets its own)
*/
struct pc87360_data {
struct i2c_client client;
struct class_device *class_dev;
struct mutex lock;
struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
int address[3];
u8 fannr, innr, tempnr;
u8 fan[3]; /* Register value */
u8 fan_min[3]; /* Register value */
u8 fan_status[3]; /* Register value */
u8 pwm[3]; /* Register value */
u16 fan_conf; /* Configuration register values, combined */
u16 in_vref; /* 1 mV/bit */
u8 in[14]; /* Register value */
u8 in_min[14]; /* Register value */
u8 in_max[14]; /* Register value */
u8 in_crit[3]; /* Register value */
u8 in_status[14]; /* Register value */
u16 in_alarms; /* Register values, combined, masked */
u8 vid_conf; /* Configuration register value */
u8 vrm;
u8 vid; /* Register value */
s8 temp[3]; /* Register value */
s8 temp_min[3]; /* Register value */
s8 temp_max[3]; /* Register value */
s8 temp_crit[3]; /* Register value */
u8 temp_status[3]; /* Register value */
u8 temp_alarms; /* Register value, masked */
};
/*
* Functions declaration
*/
static int pc87360_detect(struct i2c_adapter *adapter);
static int pc87360_detach_client(struct i2c_client *client);
static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
u8 reg);
static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
u8 reg, u8 value);
static void pc87360_init_client(struct i2c_client *client, int use_thermistors);
static struct pc87360_data *pc87360_update_device(struct device *dev);
/*
* Driver data (common to all clients)
*/
static struct i2c_driver pc87360_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "pc87360",
},
.attach_adapter = pc87360_detect,
.detach_client = pc87360_detach_client,
};
/*
* Sysfs stuff
*/
static ssize_t show_fan_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
FAN_DIV_FROM_REG(data->fan_status[attr->index])));
}
static ssize_t show_fan_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
FAN_DIV_FROM_REG(data->fan_status[attr->index])));
}
static ssize_t show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n",
FAN_DIV_FROM_REG(data->fan_status[attr->index]));
}
static ssize_t show_fan_status(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n",
FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
}
static ssize_t set_fan_min(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long fan_min = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[attr->index]));
/* If it wouldn't fit, change clock divisor */
while (fan_min > 255
&& (data->fan_status[attr->index] & 0x60) != 0x60) {
fan_min >>= 1;
data->fan[attr->index] >>= 1;
data->fan_status[attr->index] += 0x20;
}
data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(attr->index),
data->fan_min[attr->index]);
/* Write new divider, preserve alarm bits */
pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(attr->index),
data->fan_status[attr->index] & 0xF9);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute fan_input[] = {
SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
};
static struct sensor_device_attribute fan_status[] = {
SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
};
static struct sensor_device_attribute fan_div[] = {
SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
};
static struct sensor_device_attribute fan_min[] = {
SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
};
#define FAN_UNIT_ATTRS(X) \
&fan_input[X].dev_attr.attr, \
&fan_status[X].dev_attr.attr, \
&fan_div[X].dev_attr.attr, \
&fan_min[X].dev_attr.attr
static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n",
PWM_FROM_REG(data->pwm[attr->index],
FAN_CONFIG_INVERT(data->fan_conf,
attr->index)));
}
static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->pwm[attr->index] = PWM_TO_REG(val,
FAN_CONFIG_INVERT(data->fan_conf, attr->index));
pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
data->pwm[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute pwm[] = {
SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
};
static struct attribute * pc8736x_fan_attr_array[] = {
FAN_UNIT_ATTRS(0),
FAN_UNIT_ATTRS(1),
FAN_UNIT_ATTRS(2),
&pwm[0].dev_attr.attr,
&pwm[1].dev_attr.attr,
&pwm[2].dev_attr.attr,
NULL
};
static const struct attribute_group pc8736x_fan_group = {
.attrs = pc8736x_fan_attr_array,
};
static ssize_t show_in_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
data->in_vref));
}
static ssize_t show_in_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
data->in_vref));
}
static ssize_t show_in_max(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
data->in_vref));
}
static ssize_t show_in_status(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", data->in_status[attr->index]);
}
static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
data->in_min[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_max[attr->index] = IN_TO_REG(val,
data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
data->in_max[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute in_input[] = {
SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
};
static struct sensor_device_attribute in_status[] = {
SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
};
static struct sensor_device_attribute in_min[] = {
SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
};
static struct sensor_device_attribute in_max[] = {
SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
};
#define VIN_UNIT_ATTRS(X) \
&in_input[X].dev_attr.attr, \
&in_status[X].dev_attr.attr, \
&in_min[X].dev_attr.attr, \
&in_max[X].dev_attr.attr
static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
}
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", data->vrm);
}
static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
data->vrm = simple_strtoul(buf, NULL, 10);
return count;
}
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", data->in_alarms);
}
static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
static struct attribute *pc8736x_vin_attr_array[] = {
VIN_UNIT_ATTRS(0),
VIN_UNIT_ATTRS(1),
VIN_UNIT_ATTRS(2),
VIN_UNIT_ATTRS(3),
VIN_UNIT_ATTRS(4),
VIN_UNIT_ATTRS(5),
VIN_UNIT_ATTRS(6),
VIN_UNIT_ATTRS(7),
VIN_UNIT_ATTRS(8),
VIN_UNIT_ATTRS(9),
VIN_UNIT_ATTRS(10),
&dev_attr_cpu0_vid.attr,
&dev_attr_vrm.attr,
&dev_attr_alarms_in.attr,
NULL
};
static const struct attribute_group pc8736x_vin_group = {
.attrs = pc8736x_vin_attr_array,
};
static ssize_t show_therm_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
data->in_vref));
}
static ssize_t show_therm_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
data->in_vref));
}
static ssize_t show_therm_max(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
data->in_vref));
}
static ssize_t show_therm_crit(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
data->in_vref));
}
static ssize_t show_therm_status(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", data->in_status[attr->index]);
}
static ssize_t set_therm_min(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
data->in_min[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_therm_max(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
data->in_max[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_therm_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
data->in_crit[attr->index-11]);
mutex_unlock(&data->update_lock);
return count;
}
/* the +11 term below reflects the fact that VLM units 11,12,13 are
used in the chip to measure voltage across the thermistors
*/
static struct sensor_device_attribute therm_input[] = {
SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0+11),
SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1+11),
SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2+11),
};
static struct sensor_device_attribute therm_status[] = {
SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0+11),
SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1+11),
SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2+11),
};
static struct sensor_device_attribute therm_min[] = {
SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
show_therm_min, set_therm_min, 0+11),
SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
show_therm_min, set_therm_min, 1+11),
SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
show_therm_min, set_therm_min, 2+11),
};
static struct sensor_device_attribute therm_max[] = {
SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
show_therm_max, set_therm_max, 0+11),
SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
show_therm_max, set_therm_max, 1+11),
SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
show_therm_max, set_therm_max, 2+11),
};
static struct sensor_device_attribute therm_crit[] = {
SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
show_therm_crit, set_therm_crit, 0+11),
SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
show_therm_crit, set_therm_crit, 1+11),
SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
show_therm_crit, set_therm_crit, 2+11),
};
#define THERM_UNIT_ATTRS(X) \
&therm_input[X].dev_attr.attr, \
&therm_status[X].dev_attr.attr, \
&therm_min[X].dev_attr.attr, \
&therm_max[X].dev_attr.attr, \
&therm_crit[X].dev_attr.attr
static struct attribute * pc8736x_therm_attr_array[] = {
THERM_UNIT_ATTRS(0),
THERM_UNIT_ATTRS(1),
THERM_UNIT_ATTRS(2),
NULL
};
static const struct attribute_group pc8736x_therm_group = {
.attrs = pc8736x_therm_attr_array,
};
static ssize_t show_temp_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
}
static ssize_t show_temp_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
}
static ssize_t show_temp_max(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
}
static ssize_t show_temp_crit(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[attr->index]));
}
static ssize_t show_temp_status(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n", data->temp_status[attr->index]);
}
static ssize_t set_temp_min(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->temp_min[attr->index] = TEMP_TO_REG(val);
pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
data->temp_min[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_temp_max(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->temp_max[attr->index] = TEMP_TO_REG(val);
pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
data->temp_max[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_temp_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->temp_crit[attr->index] = TEMP_TO_REG(val);
pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
data->temp_crit[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute temp_input[] = {
SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
};
static struct sensor_device_attribute temp_status[] = {
SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
};
static struct sensor_device_attribute temp_min[] = {
SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
show_temp_min, set_temp_min, 0),
SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
show_temp_min, set_temp_min, 1),
SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
show_temp_min, set_temp_min, 2),
};
static struct sensor_device_attribute temp_max[] = {
SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
show_temp_max, set_temp_max, 0),
SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
show_temp_max, set_temp_max, 1),
SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
show_temp_max, set_temp_max, 2),
};
static struct sensor_device_attribute temp_crit[] = {
SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
show_temp_crit, set_temp_crit, 0),
SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
show_temp_crit, set_temp_crit, 1),
SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
show_temp_crit, set_temp_crit, 2),
};
static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", data->temp_alarms);
}
static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
#define TEMP_UNIT_ATTRS(X) \
&temp_input[X].dev_attr.attr, \
&temp_status[X].dev_attr.attr, \
&temp_min[X].dev_attr.attr, \
&temp_max[X].dev_attr.attr, \
&temp_crit[X].dev_attr.attr
static struct attribute * pc8736x_temp_attr_array[] = {
TEMP_UNIT_ATTRS(0),
TEMP_UNIT_ATTRS(1),
TEMP_UNIT_ATTRS(2),
/* include the few miscellaneous atts here */
&dev_attr_alarms_temp.attr,
NULL
};
static const struct attribute_group pc8736x_temp_group = {
.attrs = pc8736x_temp_attr_array,
};
/*
* Device detection, registration and update
*/
static int __init pc87360_find(int sioaddr, u8 *devid, unsigned short *addresses)
{
u16 val;
int i;
int nrdev; /* logical device count */
/* No superio_enter */
/* Identify device */
val = superio_inb(sioaddr, DEVID);
switch (val) {
case 0xE1: /* PC87360 */
case 0xE8: /* PC87363 */
case 0xE4: /* PC87364 */
nrdev = 1;
break;
case 0xE5: /* PC87365 */
case 0xE9: /* PC87366 */
nrdev = 3;
break;
default:
superio_exit(sioaddr);
return -ENODEV;
}
/* Remember the device id */
*devid = val;
for (i = 0; i < nrdev; i++) {
/* select logical device */
superio_outb(sioaddr, DEV, logdev[i]);
val = superio_inb(sioaddr, ACT);
if (!(val & 0x01)) {
printk(KERN_INFO "pc87360: Device 0x%02x not "
"activated\n", logdev[i]);
continue;
}
val = (superio_inb(sioaddr, BASE) << 8)
| superio_inb(sioaddr, BASE + 1);
if (!val) {
printk(KERN_INFO "pc87360: Base address not set for "
"device 0x%02x\n", logdev[i]);
continue;
}
addresses[i] = val;
if (i==0) { /* Fans */
confreg[0] = superio_inb(sioaddr, 0xF0);
confreg[1] = superio_inb(sioaddr, 0xF1);
#ifdef DEBUG
printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
"ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
(confreg[0]>>3)&1, (confreg[0]>>4)&1);
printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
"ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
(confreg[0]>>6)&1, (confreg[0]>>7)&1);
printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
"ctrl=%d inv=%d\n", confreg[1]&1,
(confreg[1]>>1)&1, (confreg[1]>>2)&1);
#endif
} else if (i==1) { /* Voltages */
/* Are we using thermistors? */
if (*devid == 0xE9) { /* PC87366 */
/* These registers are not logical-device
specific, just that we won't need them if
we don't use the VLM device */
confreg[2] = superio_inb(sioaddr, 0x2B);
confreg[3] = superio_inb(sioaddr, 0x25);
if (confreg[2] & 0x40) {
printk(KERN_INFO "pc87360: Using "
"thermistors for temperature "
"monitoring\n");
}
if (confreg[3] & 0xE0) {
printk(KERN_INFO "pc87360: VID "
"inputs routed (mode %u)\n",
confreg[3] >> 5);
}
}
}
}
superio_exit(sioaddr);
return 0;
}
static int pc87360_detect(struct i2c_adapter *adapter)
{
int i;
struct i2c_client *client;
struct pc87360_data *data;
int err = 0;
const char *name = "pc87360";
int use_thermistors = 0;
struct device *dev;
if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
return -ENOMEM;
client = &data->client;
dev = &client->dev;
i2c_set_clientdata(client, data);
client->addr = address;
mutex_init(&data->lock);
client->adapter = adapter;
client->driver = &pc87360_driver;
client->flags = 0;
data->fannr = 2;
data->innr = 0;
data->tempnr = 0;
switch (devid) {
case 0xe8:
name = "pc87363";
break;
case 0xe4:
name = "pc87364";
data->fannr = 3;
break;
case 0xe5:
name = "pc87365";
data->fannr = extra_isa[0] ? 3 : 0;
data->innr = extra_isa[1] ? 11 : 0;
data->tempnr = extra_isa[2] ? 2 : 0;
break;
case 0xe9:
name = "pc87366";
data->fannr = extra_isa[0] ? 3 : 0;
data->innr = extra_isa[1] ? 14 : 0;
data->tempnr = extra_isa[2] ? 3 : 0;
break;
}
strlcpy(client->name, name, sizeof(client->name));
data->valid = 0;
mutex_init(&data->update_lock);
for (i = 0; i < 3; i++) {
if (((data->address[i] = extra_isa[i]))
&& !request_region(extra_isa[i], PC87360_EXTENT,
pc87360_driver.driver.name)) {
dev_err(&client->dev, "Region 0x%x-0x%x already "
"in use!\n", extra_isa[i],
extra_isa[i]+PC87360_EXTENT-1);
for (i--; i >= 0; i--)
release_region(extra_isa[i], PC87360_EXTENT);
err = -EBUSY;
goto ERROR1;
}
}
/* Retrieve the fans configuration from Super-I/O space */
if (data->fannr)
data->fan_conf = confreg[0] | (confreg[1] << 8);
if ((err = i2c_attach_client(client)))
goto ERROR2;
/* Use the correct reference voltage
Unless both the VLM and the TMS logical devices agree to
use an external Vref, the internal one is used. */
if (data->innr) {
i = pc87360_read_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONFIG);
if (data->tempnr) {
i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
PC87365_REG_TEMP_CONFIG);
}
data->in_vref = (i&0x02) ? 3025 : 2966;
dev_dbg(&client->dev, "Using %s reference voltage\n",
(i&0x02) ? "external" : "internal");
data->vid_conf = confreg[3];
data->vrm = 90;
}
/* Fan clock dividers may be needed before any data is read */
for (i = 0; i < data->fannr; i++) {
if (FAN_CONFIG_MONITOR(data->fan_conf, i))
data->fan_status[i] = pc87360_read_value(data,
LD_FAN, NO_BANK,
PC87360_REG_FAN_STATUS(i));
}
if (init > 0) {
if (devid == 0xe9 && data->address[1]) /* PC87366 */
use_thermistors = confreg[2] & 0x40;
pc87360_init_client(client, use_thermistors);
}
/* Register all-or-nothing sysfs groups */
if (data->innr &&
(err = sysfs_create_group(&client->dev.kobj,
&pc8736x_vin_group)))
goto ERROR3;
if (data->innr == 14 &&
(err = sysfs_create_group(&client->dev.kobj,
&pc8736x_therm_group)))
goto ERROR3;
/* create device attr-files for varying sysfs groups */
if (data->tempnr) {
for (i = 0; i < data->tempnr; i++) {
if ((err = device_create_file(dev,
&temp_input[i].dev_attr))
|| (err = device_create_file(dev,
&temp_min[i].dev_attr))
|| (err = device_create_file(dev,
&temp_max[i].dev_attr))
|| (err = device_create_file(dev,
&temp_crit[i].dev_attr))
|| (err = device_create_file(dev,
&temp_status[i].dev_attr)))
goto ERROR3;
}
if ((err = device_create_file(dev, &dev_attr_alarms_temp)))
goto ERROR3;
}
for (i = 0; i < data->fannr; i++) {
if (FAN_CONFIG_MONITOR(data->fan_conf, i)
&& ((err = device_create_file(dev,
&fan_input[i].dev_attr))
|| (err = device_create_file(dev,
&fan_min[i].dev_attr))
|| (err = device_create_file(dev,
&fan_div[i].dev_attr))
|| (err = device_create_file(dev,
&fan_status[i].dev_attr))))
goto ERROR3;
if (FAN_CONFIG_CONTROL(data->fan_conf, i)
&& (err = device_create_file(dev, &pwm[i].dev_attr)))
goto ERROR3;
}
data->class_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->class_dev)) {
err = PTR_ERR(data->class_dev);
goto ERROR3;
}
return 0;
ERROR3:
/* can still remove groups whose members were added individually */
sysfs_remove_group(&client->dev.kobj, &pc8736x_temp_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_fan_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_therm_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_vin_group);
i2c_detach_client(client);
ERROR2:
for (i = 0; i < 3; i++) {
if (data->address[i]) {
release_region(data->address[i], PC87360_EXTENT);
}
}
ERROR1:
kfree(data);
return err;
}
static int pc87360_detach_client(struct i2c_client *client)
{
struct pc87360_data *data = i2c_get_clientdata(client);
int i;
hwmon_device_unregister(data->class_dev);
sysfs_remove_group(&client->dev.kobj, &pc8736x_temp_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_fan_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_therm_group);
sysfs_remove_group(&client->dev.kobj, &pc8736x_vin_group);
if ((i = i2c_detach_client(client)))
return i;
for (i = 0; i < 3; i++) {
if (data->address[i]) {
release_region(data->address[i], PC87360_EXTENT);
}
}
kfree(data);
return 0;
}
/* ldi is the logical device index
bank is for voltages and temperatures only */
static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
u8 reg)
{
int res;
mutex_lock(&(data->lock));
if (bank != NO_BANK)
outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
res = inb_p(data->address[ldi] + reg);
mutex_unlock(&(data->lock));
return res;
}
static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
u8 reg, u8 value)
{
mutex_lock(&(data->lock));
if (bank != NO_BANK)
outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
outb_p(value, data->address[ldi] + reg);
mutex_unlock(&(data->lock));
}
static void pc87360_init_client(struct i2c_client *client, int use_thermistors)
{
struct pc87360_data *data = i2c_get_clientdata(client);
int i, nr;
const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
const u8 init_temp[3] = { 2, 2, 1 };
u8 reg;
if (init >= 2 && data->innr) {
reg = pc87360_read_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONVRATE);
dev_info(&client->dev, "VLM conversion set to "
"1s period, 160us delay\n");
pc87360_write_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONVRATE,
(reg & 0xC0) | 0x11);
}
nr = data->innr < 11 ? data->innr : 11;
for (i = 0; i < nr; i++) {
if (init >= init_in[i]) {
/* Forcibly enable voltage channel */
reg = pc87360_read_value(data, LD_IN, i,
PC87365_REG_IN_STATUS);
if (!(reg & 0x01)) {
dev_dbg(&client->dev, "Forcibly "
"enabling in%d\n", i);
pc87360_write_value(data, LD_IN, i,
PC87365_REG_IN_STATUS,
(reg & 0x68) | 0x87);
}
}
}
/* We can't blindly trust the Super-I/O space configuration bit,
most BIOS won't set it properly */
for (i = 11; i < data->innr; i++) {
reg = pc87360_read_value(data, LD_IN, i,
PC87365_REG_TEMP_STATUS);
use_thermistors = use_thermistors || (reg & 0x01);
}
i = use_thermistors ? 2 : 0;
for (; i < data->tempnr; i++) {
if (init >= init_temp[i]) {
/* Forcibly enable temperature channel */
reg = pc87360_read_value(data, LD_TEMP, i,
PC87365_REG_TEMP_STATUS);
if (!(reg & 0x01)) {
dev_dbg(&client->dev, "Forcibly "
"enabling temp%d\n", i+1);
pc87360_write_value(data, LD_TEMP, i,
PC87365_REG_TEMP_STATUS,
0xCF);
}
}
}
if (use_thermistors) {
for (i = 11; i < data->innr; i++) {
if (init >= init_in[i]) {
/* The pin may already be used by thermal
diodes */
reg = pc87360_read_value(data, LD_TEMP,
(i-11)/2, PC87365_REG_TEMP_STATUS);
if (reg & 0x01) {
dev_dbg(&client->dev, "Skipping "
"temp%d, pin already in use "
"by temp%d\n", i-7, (i-11)/2);
continue;
}
/* Forcibly enable thermistor channel */
reg = pc87360_read_value(data, LD_IN, i,
PC87365_REG_IN_STATUS);
if (!(reg & 0x01)) {
dev_dbg(&client->dev, "Forcibly "
"enabling temp%d\n", i-7);
pc87360_write_value(data, LD_IN, i,
PC87365_REG_TEMP_STATUS,
(reg & 0x60) | 0x8F);
}
}
}
}
if (data->innr) {
reg = pc87360_read_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONFIG);
if (reg & 0x01) {
dev_dbg(&client->dev, "Forcibly "
"enabling monitoring (VLM)\n");
pc87360_write_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONFIG,
reg & 0xFE);
}
}
if (data->tempnr) {
reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
PC87365_REG_TEMP_CONFIG);
if (reg & 0x01) {
dev_dbg(&client->dev, "Forcibly enabling "
"monitoring (TMS)\n");
pc87360_write_value(data, LD_TEMP, NO_BANK,
PC87365_REG_TEMP_CONFIG,
reg & 0xFE);
}
if (init >= 2) {
/* Chip config as documented by National Semi. */
pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
/* We voluntarily omit the bank here, in case the
sequence itself matters. It shouldn't be a problem,
since nobody else is supposed to access the
device at that point. */
pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
}
}
}
static void pc87360_autodiv(struct i2c_client *client, int nr)
{
struct pc87360_data *data = i2c_get_clientdata(client);
u8 old_min = data->fan_min[nr];
/* Increase clock divider if needed and possible */
if ((data->fan_status[nr] & 0x04) /* overflow flag */
|| (data->fan[nr] >= 224)) { /* next to overflow */
if ((data->fan_status[nr] & 0x60) != 0x60) {
data->fan_status[nr] += 0x20;
data->fan_min[nr] >>= 1;
data->fan[nr] >>= 1;
dev_dbg(&client->dev, "Increasing "
"clock divider to %d for fan %d\n",
FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
}
} else {
/* Decrease clock divider if possible */
while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
&& data->fan[nr] < 85 /* bad accuracy */
&& (data->fan_status[nr] & 0x60) != 0x00) {
data->fan_status[nr] -= 0x20;
data->fan_min[nr] <<= 1;
data->fan[nr] <<= 1;
dev_dbg(&client->dev, "Decreasing "
"clock divider to %d for fan %d\n",
FAN_DIV_FROM_REG(data->fan_status[nr]),
nr+1);
}
}
/* Write new fan min if it changed */
if (old_min != data->fan_min[nr]) {
pc87360_write_value(data, LD_FAN, NO_BANK,
PC87360_REG_FAN_MIN(nr),
data->fan_min[nr]);
}
}
static struct pc87360_data *pc87360_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
u8 i;
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
dev_dbg(&client->dev, "Data update\n");
/* Fans */
for (i = 0; i < data->fannr; i++) {
if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
data->fan_status[i] =
pc87360_read_value(data, LD_FAN,
NO_BANK, PC87360_REG_FAN_STATUS(i));
data->fan[i] = pc87360_read_value(data, LD_FAN,
NO_BANK, PC87360_REG_FAN(i));
data->fan_min[i] = pc87360_read_value(data,
LD_FAN, NO_BANK,
PC87360_REG_FAN_MIN(i));
/* Change clock divider if needed */
pc87360_autodiv(client, i);
/* Clear bits and write new divider */
pc87360_write_value(data, LD_FAN, NO_BANK,
PC87360_REG_FAN_STATUS(i),
data->fan_status[i]);
}
if (FAN_CONFIG_CONTROL(data->fan_conf, i))
data->pwm[i] = pc87360_read_value(data, LD_FAN,
NO_BANK, PC87360_REG_PWM(i));
}
/* Voltages */
for (i = 0; i < data->innr; i++) {
data->in_status[i] = pc87360_read_value(data, LD_IN, i,
PC87365_REG_IN_STATUS);
/* Clear bits */
pc87360_write_value(data, LD_IN, i,
PC87365_REG_IN_STATUS,
data->in_status[i]);
if ((data->in_status[i] & 0x81) == 0x81) {
data->in[i] = pc87360_read_value(data, LD_IN,
i, PC87365_REG_IN);
}
if (data->in_status[i] & 0x01) {
data->in_min[i] = pc87360_read_value(data,
LD_IN, i,
PC87365_REG_IN_MIN);
data->in_max[i] = pc87360_read_value(data,
LD_IN, i,
PC87365_REG_IN_MAX);
if (i >= 11)
data->in_crit[i-11] =
pc87360_read_value(data, LD_IN,
i, PC87365_REG_TEMP_CRIT);
}
}
if (data->innr) {
data->in_alarms = pc87360_read_value(data, LD_IN,
NO_BANK, PC87365_REG_IN_ALARMS1)
| ((pc87360_read_value(data, LD_IN,
NO_BANK, PC87365_REG_IN_ALARMS2)
& 0x07) << 8);
data->vid = (data->vid_conf & 0xE0) ?
pc87360_read_value(data, LD_IN,
NO_BANK, PC87365_REG_VID) : 0x1F;
}
/* Temperatures */
for (i = 0; i < data->tempnr; i++) {
data->temp_status[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP_STATUS);
/* Clear bits */
pc87360_write_value(data, LD_TEMP, i,
PC87365_REG_TEMP_STATUS,
data->temp_status[i]);
if ((data->temp_status[i] & 0x81) == 0x81) {
data->temp[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP);
}
if (data->temp_status[i] & 0x01) {
data->temp_min[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP_MIN);
data->temp_max[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP_MAX);
data->temp_crit[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP_CRIT);
}
}
if (data->tempnr) {
data->temp_alarms = pc87360_read_value(data, LD_TEMP,
NO_BANK, PC87365_REG_TEMP_ALARMS)
& 0x3F;
}
data->last_updated = jiffies;
data->valid = 1;
}
mutex_unlock(&data->update_lock);
return data;
}
static int __init pc87360_init(void)
{
int i;
if (pc87360_find(0x2e, &devid, extra_isa)
&& pc87360_find(0x4e, &devid, extra_isa)) {
printk(KERN_WARNING "pc87360: PC8736x not detected, "
"module not inserted.\n");
return -ENODEV;
}
/* Arbitrarily pick one of the addresses */
for (i = 0; i < 3; i++) {
if (extra_isa[i] != 0x0000) {
address = extra_isa[i];
break;
}
}
if (address == 0x0000) {
printk(KERN_WARNING "pc87360: No active logical device, "
"module not inserted.\n");
return -ENODEV;
}
return i2c_isa_add_driver(&pc87360_driver);
}
static void __exit pc87360_exit(void)
{
i2c_isa_del_driver(&pc87360_driver);
}
MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
MODULE_DESCRIPTION("PC8736x hardware monitor");
MODULE_LICENSE("GPL");
module_init(pc87360_init);
module_exit(pc87360_exit);
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