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-rw-r--r--drivers/hwmon/it87.c162
1 files changed, 87 insertions, 75 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index d70c6ec31725..96306a6f844e 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -1,40 +1,40 @@
/*
- 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>
@@ -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))
@@ -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;
@@ -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,
@@ -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)
@@ -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;
@@ -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]));
@@ -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];
@@ -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);
@@ -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);
@@ -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;
@@ -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));
@@ -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;
}
@@ -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) {
@@ -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;
@@ -1672,24 +1685,22 @@ 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 */
@@ -1697,7 +1708,7 @@ static struct it87_data *it87_update_device(struct device *dev)
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 */
@@ -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 */
@@ -1810,7 +1821,7 @@ exit:
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));
@@ -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;
}
@@ -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);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.