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yaml
---
r: 186405
b: refs/heads/master
c: 5f2dc79
h: refs/heads/master
i:
  186403: 47af911
v: v3
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Jean Delvare committed Mar 5, 2010
1 parent 9f9c60a commit b86136d
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: d9b327c310030fa80abbbc9eaaca9f1a6228dbf3
refs/heads/master: 5f2dc798cadd144659cc9f5b6fc2a0a12c6dbdb0
162 changes: 87 additions & 75 deletions trunk/drivers/hwmon/it87.c
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/*
it87.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring.
The IT8705F is an LPC-based Super I/O part that contains UARTs, a
parallel port, an IR port, a MIDI port, a floppy controller, etc., in
addition to an Environment Controller (Enhanced Hardware Monitor and
Fan Controller)
This driver supports only the Environment Controller in the IT8705F and
similar parts. The other devices are supported by different drivers.
Supports: IT8705F Super I/O chip w/LPC interface
IT8712F Super I/O chip w/LPC interface
IT8716F Super I/O chip w/LPC interface
IT8718F Super I/O chip w/LPC interface
IT8720F Super I/O chip w/LPC interface
IT8726F Super I/O chip w/LPC interface
Sis950 A clone of the IT8705F
Copyright (C) 2001 Chris Gauthron
Copyright (C) 2005-2007 Jean Delvare <khali@linux-fr.org>
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.
*/
* it87.c - Part of lm_sensors, Linux kernel modules for hardware
* monitoring.
*
* The IT8705F is an LPC-based Super I/O part that contains UARTs, a
* parallel port, an IR port, a MIDI port, a floppy controller, etc., in
* addition to an Environment Controller (Enhanced Hardware Monitor and
* Fan Controller)
*
* This driver supports only the Environment Controller in the IT8705F and
* similar parts. The other devices are supported by different drivers.
*
* Supports: IT8705F Super I/O chip w/LPC interface
* IT8712F Super I/O chip w/LPC interface
* IT8716F Super I/O chip w/LPC interface
* IT8718F Super I/O chip w/LPC interface
* IT8720F Super I/O chip w/LPC interface
* IT8726F Super I/O chip w/LPC interface
* Sis950 A clone of the IT8705F
*
* Copyright (C) 2001 Chris Gauthron
* Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
*
* 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>
Expand Down Expand Up @@ -494,8 +494,9 @@ static ssize_t show_sensor(struct device *dev, struct device_attribute *attr,
int nr = sensor_attr->index;

struct it87_data *data = it87_update_device(dev);
u8 reg = data->sensor; /* In case the value is updated while we use it */

u8 reg = data->sensor; /* In case the value is updated while
we use it */

if (reg & (1 << nr))
return sprintf(buf, "3\n"); /* thermal diode */
if (reg & (8 << nr))
Expand All @@ -522,9 +523,9 @@ static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
}
/* 3 = thermal diode; 4 = thermistor; 0 = disabled */
if (val == 3)
data->sensor |= 1 << nr;
data->sensor |= 1 << nr;
else if (val == 4)
data->sensor |= 8 << nr;
data->sensor |= 8 << nr;
else if (val != 0) {
mutex_unlock(&data->update_lock);
return -EINVAL;
Expand Down Expand Up @@ -562,7 +563,7 @@ static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
int nr = sensor_attr->index;

struct it87_data *data = it87_update_device(dev);
return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr],
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
DIV_FROM_REG(data->fan_div[nr])));
}
static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
Expand All @@ -572,8 +573,8 @@ static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
int nr = sensor_attr->index;

struct it87_data *data = it87_update_device(dev);
return sprintf(buf,"%d\n",
FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])));
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
DIV_FROM_REG(data->fan_div[nr])));
}
static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
char *buf)
Expand All @@ -584,8 +585,8 @@ static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
}
static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr,
char *buf)
static ssize_t show_pwm_enable(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
Expand Down Expand Up @@ -623,9 +624,15 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
mutex_lock(&data->update_lock);
reg = it87_read_value(data, IT87_REG_FAN_DIV);
switch (nr) {
case 0: data->fan_div[nr] = reg & 0x07; break;
case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break;
case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break;
case 0:
data->fan_div[nr] = reg & 0x07;
break;
case 1:
data->fan_div[nr] = (reg >> 3) & 0x07;
break;
case 2:
data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
break;
}

data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
Expand Down Expand Up @@ -696,7 +703,8 @@ static ssize_t set_pwm_enable(struct device *dev,
it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
/* set on/off mode */
data->fan_main_ctrl &= ~(1 << nr);
it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
data->fan_main_ctrl);
} else {
if (val == 1) /* Manual mode */
data->pwm_ctrl[nr] = data->pwm_duty[nr];
Expand All @@ -705,7 +713,8 @@ static ssize_t set_pwm_enable(struct device *dev,
it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
/* set SmartGuardian mode */
data->fan_main_ctrl |= (1 << nr);
it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
data->fan_main_ctrl);
}

mutex_unlock(&data->update_lock);
Expand Down Expand Up @@ -892,7 +901,8 @@ show_fan16_offset(4);
show_fan16_offset(5);

/* Alarms */
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%u\n", data->alarms);
Expand Down Expand Up @@ -972,14 +982,14 @@ static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);

static ssize_t
show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct it87_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%u\n", data->vrm);
}
static ssize_t
store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct it87_data *data = dev_get_drvdata(dev);
u32 val;
Expand All @@ -991,8 +1001,8 @@ store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf
}
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);

static ssize_t
show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
Expand Down Expand Up @@ -1375,7 +1385,8 @@ static int __devinit it87_probe(struct platform_device *pdev)
goto ERROR0;
}

if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) {
data = kzalloc(sizeof(struct it87_data), GFP_KERNEL);
if (!data) {
err = -ENOMEM;
goto ERROR1;
}
Expand Down Expand Up @@ -1403,7 +1414,8 @@ static int __devinit it87_probe(struct platform_device *pdev)
it87_init_device(pdev);

/* Register sysfs hooks */
if ((err = sysfs_create_group(&dev->kobj, &it87_group)))
err = sysfs_create_group(&dev->kobj, &it87_group);
if (err)
goto ERROR2;

if (sio_data->beep_pin) {
Expand Down Expand Up @@ -1623,7 +1635,8 @@ static void __devinit it87_init_device(struct platform_device *pdev)
if ((data->fan_main_ctrl & mask) == 0) {
/* Enable all fan tachometers */
data->fan_main_ctrl |= mask;
it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
data->fan_main_ctrl);
}
data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;

Expand Down Expand Up @@ -1672,32 +1685,30 @@ static struct it87_data *it87_update_device(struct device *dev)

if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|| !data->valid) {

if (update_vbat) {
/* Cleared after each update, so reenable. Value
returned by this read will be previous value */
returned by this read will be previous value */
it87_write_value(data, IT87_REG_CONFIG,
it87_read_value(data, IT87_REG_CONFIG) | 0x40);
it87_read_value(data, IT87_REG_CONFIG) | 0x40);
}
for (i = 0; i <= 7; i++) {
data->in[i] =
it87_read_value(data, IT87_REG_VIN(i));
it87_read_value(data, IT87_REG_VIN(i));
data->in_min[i] =
it87_read_value(data, IT87_REG_VIN_MIN(i));
it87_read_value(data, IT87_REG_VIN_MIN(i));
data->in_max[i] =
it87_read_value(data, IT87_REG_VIN_MAX(i));
it87_read_value(data, IT87_REG_VIN_MAX(i));
}
/* in8 (battery) has no limit registers */
data->in[8] =
it87_read_value(data, IT87_REG_VIN(8));
data->in[8] = it87_read_value(data, IT87_REG_VIN(8));

for (i = 0; i < 5; i++) {
/* Skip disabled fans */
if (!(data->has_fan & (1 << i)))
continue;

data->fan_min[i] =
it87_read_value(data, IT87_REG_FAN_MIN[i]);
it87_read_value(data, IT87_REG_FAN_MIN[i]);
data->fan[i] = it87_read_value(data,
IT87_REG_FAN[i]);
/* Add high byte if in 16-bit mode */
Expand All @@ -1710,11 +1721,11 @@ static struct it87_data *it87_update_device(struct device *dev)
}
for (i = 0; i < 3; i++) {
data->temp[i] =
it87_read_value(data, IT87_REG_TEMP(i));
it87_read_value(data, IT87_REG_TEMP(i));
data->temp_high[i] =
it87_read_value(data, IT87_REG_TEMP_HIGH(i));
it87_read_value(data, IT87_REG_TEMP_HIGH(i));
data->temp_low[i] =
it87_read_value(data, IT87_REG_TEMP_LOW(i));
it87_read_value(data, IT87_REG_TEMP_LOW(i));
}

/* Newer chips don't have clock dividers */
Expand Down Expand Up @@ -1810,7 +1821,7 @@ static int __init it87_device_add(unsigned short address,
static int __init sm_it87_init(void)
{
int err;
unsigned short isa_address=0;
unsigned short isa_address = 0;
struct it87_sio_data sio_data;

memset(&sio_data, 0, sizeof(struct it87_sio_data));
Expand All @@ -1822,7 +1833,7 @@ static int __init sm_it87_init(void)
return err;

err = it87_device_add(isa_address, &sio_data);
if (err){
if (err) {
platform_driver_unregister(&it87_driver);
return err;
}
Expand All @@ -1843,7 +1854,8 @@ MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver");
module_param(update_vbat, bool, 0);
MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
module_param(fix_pwm_polarity, bool, 0);
MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)");
MODULE_PARM_DESC(fix_pwm_polarity,
"Force PWM polarity to active high (DANGEROUS)");
MODULE_LICENSE("GPL");

module_init(sm_it87_init);
Expand Down

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