Supports: IT8705F Super I/O chip w/LPC interface
IT8712F Super I/O chip w/LPC interface & SMBus
+ IT8716F Super I/O chip w/LPC interface
+ IT8718F Super I/O chip w/LPC interface
Sis950 A clone of the IT8705F
Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com>
- Largely inspired by lm78.c of the same package
+ Copyright (C) 2005-2006 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
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-/*
- djg@pdp8.net David Gesswein 7/18/01
- Modified to fix bug with not all alarms enabled.
- Added ability to read battery voltage and select temperature sensor
- type at module load time.
-*/
-
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
+#include <linux/mutex.h>
#include <asm/io.h>
/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
- 0x2e, 0x2f, I2C_CLIENT_END };
+static unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END };
static unsigned short isa_address;
/* Insmod parameters */
-I2C_CLIENT_INSMOD_2(it87, it8712);
+I2C_CLIENT_INSMOD_4(it87, it8712, it8716, it8718);
#define REG 0x2e /* The register to read/write */
#define DEV 0x07 /* Register: Logical device select */
#define VAL 0x2f /* The value to read/write */
#define PME 0x04 /* The device with the fan registers in it */
+#define GPIO 0x07 /* The device with the IT8718F VID value in it */
#define DEVID 0x20 /* Register: Device ID */
#define DEVREV 0x22 /* Register: Device Revision */
}
static inline void
-superio_select(void)
+superio_select(int ldn)
{
outb(DEV, REG);
- outb(PME, VAL);
+ outb(ldn, VAL);
}
static inline void
outb(0x02, VAL);
}
+/* Logical device 4 registers */
#define IT8712F_DEVID 0x8712
#define IT8705F_DEVID 0x8705
+#define IT8716F_DEVID 0x8716
+#define IT8718F_DEVID 0x8718
#define IT87_ACT_REG 0x30
#define IT87_BASE_REG 0x60
+/* Logical device 7 registers (IT8712F and later) */
+#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
+#define IT87_SIO_VID_REG 0xfc /* VID value */
+
/* Update battery voltage after every reading if true */
static int update_vbat;
/* Not all BIOSes properly configure the PWM registers */
static int fix_pwm_polarity;
-/* Chip Type */
-
+/* Values read from Super-I/O config space */
static u16 chip_type;
+static u8 vid_value;
/* Many IT87 constants specified below */
#define IT87_REG_ALARM2 0x02
#define IT87_REG_ALARM3 0x03
+/* The IT8718F has the VID value in a different register, in Super-I/O
+ configuration space. */
#define IT87_REG_VID 0x0a
+/* Warning: register 0x0b is used for something completely different in
+ new chips/revisions. I suspect only 16-bit tachometer mode will work
+ for these. */
#define IT87_REG_FAN_DIV 0x0b
+#define IT87_REG_FAN_16BIT 0x0c
/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
#define IT87_REG_FAN(nr) (0x0d + (nr))
#define IT87_REG_FAN_MIN(nr) (0x10 + (nr))
+#define IT87_REG_FANX(nr) (0x18 + (nr))
+#define IT87_REG_FANX_MIN(nr) (0x1b + (nr))
#define IT87_REG_FAN_MAIN_CTRL 0x13
#define IT87_REG_FAN_CTL 0x14
#define IT87_REG_PWM(nr) (0x15 + (nr))
254);
}
+static inline u16 FAN16_TO_REG(long rpm)
+{
+ if (rpm == 0)
+ return 0xffff;
+ return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
+}
+
#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div)))
+/* The divider is fixed to 2 in 16-bit mode */
+#define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2))
#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\
((val)+500)/1000),-128,127))
static int DIV_TO_REG(int val)
{
int answer = 0;
- while ((val >>= 1) != 0)
+ while (answer < 7 && (val >>= 1))
answer++;
return answer;
}
struct it87_data {
struct i2c_client client;
struct class_device *class_dev;
- struct semaphore lock;
+ struct mutex lock;
enum chips type;
- struct semaphore update_lock;
+ struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
u8 in[9]; /* Register value */
- u8 in_max[9]; /* Register value */
- u8 in_min[9]; /* Register value */
- u8 fan[3]; /* Register value */
- u8 fan_min[3]; /* Register value */
+ u8 in_max[8]; /* Register value */
+ u8 in_min[8]; /* Register value */
+ u8 has_fan; /* Bitfield, fans enabled */
+ u16 fan[3]; /* Register values, possibly combined */
+ u16 fan_min[3]; /* Register values, possibly combined */
u8 temp[3]; /* Register value */
u8 temp_high[3]; /* Register value */
u8 temp_low[3]; /* Register value */
static int it87_detect(struct i2c_adapter *adapter, int address, int kind);
static int it87_detach_client(struct i2c_client *client);
-static int it87_read_value(struct i2c_client *client, u8 register);
-static int it87_write_value(struct i2c_client *client, u8 register,
- u8 value);
+static int it87_read_value(struct i2c_client *client, u8 reg);
+static int it87_write_value(struct i2c_client *client, u8 reg, u8 value);
static struct it87_data *it87_update_device(struct device *dev);
static int it87_check_pwm(struct i2c_client *client);
static void it87_init_client(struct i2c_client *client, struct it87_data *data);
static struct i2c_driver it87_isa_driver = {
.driver = {
+ .owner = THIS_MODULE,
.name = "it87-isa",
},
.attach_adapter = it87_isa_attach_adapter,
struct it87_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->in_min[nr] = IN_TO_REG(val);
it87_write_value(client, IT87_REG_VIN_MIN(nr),
data->in_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
struct it87_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->in_max[nr] = IN_TO_REG(val);
it87_write_value(client, IT87_REG_VIN_MAX(nr),
data->in_max[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_high[nr] = TEMP_TO_REG(val);
it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_low[nr] = TEMP_TO_REG(val);
it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
#define show_temp_offset(offset) \
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->sensor &= ~(1 << nr);
data->sensor &= ~(8 << nr);
else if (val == 2)
data->sensor |= 8 << nr;
else if (val != 0) {
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return -EINVAL;
}
it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
#define show_sensor_offset(offset) \
int val = simple_strtol(buf, NULL, 10);
u8 reg = it87_read_value(client, IT87_REG_FAN_DIV);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
switch (nr) {
case 0: data->fan_div[nr] = reg & 0x07; break;
case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break;
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
- int val = simple_strtol(buf, NULL, 10);
- int i, min[3];
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+ int min;
u8 old;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
old = it87_read_value(client, IT87_REG_FAN_DIV);
- for (i = 0; i < 3; i++)
- min[i] = FAN_FROM_REG(data->fan_min[i], DIV_FROM_REG(data->fan_div[i]));
+ /* Save fan min limit */
+ min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
switch (nr) {
case 0:
val |= 0x1 << 6;
it87_write_value(client, IT87_REG_FAN_DIV, val);
- for (i = 0; i < 3; i++) {
- data->fan_min[i]=FAN_TO_REG(min[i], DIV_FROM_REG(data->fan_div[i]));
- it87_write_value(client, IT87_REG_FAN_MIN(i), data->fan_min[i]);
- }
- up(&data->update_lock);
+ /* Restore fan min limit */
+ data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
+ it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]);
+
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_pwm_enable(struct device *dev,
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if (val == 0) {
int tmp;
/* set saved pwm value, clear FAN_CTLX PWM mode bit */
it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
} else {
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return -EINVAL;
}
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
if (val < 0 || val > 255)
return -EINVAL;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->manual_pwm_ctl[nr] = val;
if (data->fan_main_ctrl & (1 << nr))
it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
show_pwm_offset(2);
show_pwm_offset(3);
+/* A different set of callbacks for 16-bit fans */
+static ssize_t show_fan16(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;
+ struct it87_data *data = it87_update_device(dev);
+ return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr]));
+}
+
+static ssize_t show_fan16_min(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;
+ struct it87_data *data = it87_update_device(dev);
+ return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr]));
+}
+
+static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10);
+
+ mutex_lock(&data->update_lock);
+ data->fan_min[nr] = FAN16_TO_REG(val);
+ it87_write_value(client, IT87_REG_FAN_MIN(nr),
+ data->fan_min[nr] & 0xff);
+ it87_write_value(client, IT87_REG_FANX_MIN(nr),
+ data->fan_min[nr] >> 8);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+/* We want to use the same sysfs file names as 8-bit fans, but we need
+ different variable names, so we have to use SENSOR_ATTR instead of
+ SENSOR_DEVICE_ATTR. */
+#define show_fan16_offset(offset) \
+static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \
+ = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \
+ show_fan16, NULL, offset - 1); \
+static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \
+ = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
+ show_fan16_min, set_fan16_min, offset - 1)
+
+show_fan16_offset(1);
+show_fan16_offset(2);
+show_fan16_offset(3);
+
/* Alarms */
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
{
superio_enter();
chip_type = superio_inw(DEVID);
if (chip_type != IT8712F_DEVID
+ && chip_type != IT8716F_DEVID
+ && chip_type != IT8718F_DEVID
&& chip_type != IT8705F_DEVID)
goto exit;
- superio_select();
+ superio_select(PME);
if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
pr_info("it87: Device not activated, skipping\n");
goto exit;
pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n",
chip_type, *address, superio_inb(DEVREV) & 0x0f);
+ /* Read GPIO config and VID value from LDN 7 (GPIO) */
+ if (chip_type != IT8705F_DEVID) {
+ int reg;
+
+ superio_select(GPIO);
+ if (chip_type == it8718)
+ vid_value = superio_inb(IT87_SIO_VID_REG);
+
+ reg = superio_inb(IT87_SIO_PINX2_REG);
+ if (reg & (1 << 0))
+ pr_info("it87: in3 is VCC (+5V)\n");
+ if (reg & (1 << 1))
+ pr_info("it87: in7 is VCCH (+5V Stand-By)\n");
+ }
+
exit:
superio_exit();
return err;
new_client = &data->client;
if (is_isa)
- init_MUTEX(&data->lock);
+ mutex_init(&data->lock);
i2c_set_clientdata(new_client, data);
new_client->addr = address;
new_client->adapter = adapter;
i = it87_read_value(new_client, IT87_REG_CHIPID);
if (i == 0x90) {
kind = it87;
- if ((is_isa) && (chip_type == IT8712F_DEVID))
- kind = it8712;
+ if (is_isa) {
+ switch (chip_type) {
+ case IT8712F_DEVID:
+ kind = it8712;
+ break;
+ case IT8716F_DEVID:
+ kind = it8716;
+ break;
+ case IT8718F_DEVID:
+ kind = it8718;
+ break;
+ }
+ }
}
else {
if (kind == 0)
name = "it87";
} else if (kind == it8712) {
name = "it8712";
+ } else if (kind == it8716) {
+ name = "it8716";
+ } else if (kind == it8718) {
+ name = "it8718";
}
/* Fill in the remaining client fields and put it into the global list */
strlcpy(new_client->name, name, I2C_NAME_SIZE);
data->type = kind;
data->valid = 0;
- init_MUTEX(&data->update_lock);
+ mutex_init(&data->update_lock);
/* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client)))
goto ERROR2;
+ if (!is_isa)
+ dev_info(&new_client->dev, "The I2C interface to IT87xxF "
+ "hardware monitoring chips is deprecated. Please "
+ "report if you still rely on it.\n");
+
/* Check PWM configuration */
enable_pwm_interface = it87_check_pwm(new_client);
device_create_file(&new_client->dev, &sensor_dev_attr_temp1_type.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp2_type.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr);
- device_create_file(&new_client->dev, &sensor_dev_attr_fan1_input.dev_attr);
- device_create_file(&new_client->dev, &sensor_dev_attr_fan2_input.dev_attr);
- device_create_file(&new_client->dev, &sensor_dev_attr_fan3_input.dev_attr);
- device_create_file(&new_client->dev, &sensor_dev_attr_fan1_min.dev_attr);
- device_create_file(&new_client->dev, &sensor_dev_attr_fan2_min.dev_attr);
- device_create_file(&new_client->dev, &sensor_dev_attr_fan3_min.dev_attr);
- device_create_file(&new_client->dev, &sensor_dev_attr_fan1_div.dev_attr);
- device_create_file(&new_client->dev, &sensor_dev_attr_fan2_div.dev_attr);
- device_create_file(&new_client->dev, &sensor_dev_attr_fan3_div.dev_attr);
+
+ /* Do not create fan files for disabled fans */
+ if (data->type == it8716 || data->type == it8718) {
+ /* 16-bit tachometers */
+ if (data->has_fan & (1 << 0)) {
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan1_input16.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan1_min16.dev_attr);
+ }
+ if (data->has_fan & (1 << 1)) {
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan2_input16.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan2_min16.dev_attr);
+ }
+ if (data->has_fan & (1 << 2)) {
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan3_input16.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan3_min16.dev_attr);
+ }
+ } else {
+ /* 8-bit tachometers with clock divider */
+ if (data->has_fan & (1 << 0)) {
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan1_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan1_min.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan1_div.dev_attr);
+ }
+ if (data->has_fan & (1 << 1)) {
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan2_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan2_min.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan2_div.dev_attr);
+ }
+ if (data->has_fan & (1 << 2)) {
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan3_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan3_min.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan3_div.dev_attr);
+ }
+ }
+
device_create_file(&new_client->dev, &dev_attr_alarms);
if (enable_pwm_interface) {
device_create_file(&new_client->dev, &sensor_dev_attr_pwm1_enable.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr);
}
- if (data->type == it8712) {
+ if (data->type == it8712 || data->type == it8716
+ || data->type == it8718) {
data->vrm = vid_which_vrm();
+ /* VID reading from Super-I/O config space if available */
+ data->vid = vid_value;
device_create_file_vrm(new_client);
device_create_file_vid(new_client);
}
int res;
if (i2c_is_isa_client(client)) {
- down(&data->lock);
+ mutex_lock(&data->lock);
outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET);
res = inb_p(client->addr + IT87_DATA_REG_OFFSET);
- up(&data->lock);
+ mutex_unlock(&data->lock);
return res;
} else
return i2c_smbus_read_byte_data(client, reg);
struct it87_data *data = i2c_get_clientdata(client);
if (i2c_is_isa_client(client)) {
- down(&data->lock);
+ mutex_lock(&data->lock);
outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET);
outb_p(value, client->addr + IT87_DATA_REG_OFFSET);
- up(&data->lock);
+ mutex_unlock(&data->lock);
return 0;
} else
return i2c_smbus_write_byte_data(client, reg, value);
data->manual_pwm_ctl[i] = 0xff;
}
+ /* Some chips seem to have default value 0xff for all limit
+ * registers. For low voltage limits it makes no sense and triggers
+ * alarms, so change to 0 instead. For high temperature limits, it
+ * means -1 degree C, which surprisingly doesn't trigger an alarm,
+ * but is still confusing, so change to 127 degrees C. */
+ for (i = 0; i < 8; i++) {
+ tmp = it87_read_value(client, IT87_REG_VIN_MIN(i));
+ if (tmp == 0xff)
+ it87_write_value(client, IT87_REG_VIN_MIN(i), 0);
+ }
+ for (i = 0; i < 3; i++) {
+ tmp = it87_read_value(client, IT87_REG_TEMP_HIGH(i));
+ if (tmp == 0xff)
+ it87_write_value(client, IT87_REG_TEMP_HIGH(i), 127);
+ }
+
/* Check if temperature channnels are reset manually or by some reason */
tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE);
if ((tmp & 0x3f) == 0) {
data->fan_main_ctrl |= 0x70;
it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
}
+ data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
+
+ /* Set tachometers to 16-bit mode if needed */
+ if (data->type == it8716 || data->type == it8718) {
+ tmp = it87_read_value(client, IT87_REG_FAN_16BIT);
+ if (~tmp & 0x07 & data->has_fan) {
+ dev_dbg(&client->dev,
+ "Setting fan1-3 to 16-bit mode\n");
+ it87_write_value(client, IT87_REG_FAN_16BIT,
+ tmp | 0x07);
+ }
+ }
/* Set current fan mode registers and the default settings for the
* other mode registers */
struct it87_data *data = i2c_get_clientdata(client);
int i;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|| !data->valid) {
data->in_max[i] =
it87_read_value(client, IT87_REG_VIN_MAX(i));
}
+ /* in8 (battery) has no limit registers */
data->in[8] =
it87_read_value(client, IT87_REG_VIN(8));
- /* Temperature sensor doesn't have limit registers, set
- to min and max value */
- data->in_min[8] = 0;
- data->in_max[8] = 255;
for (i = 0; i < 3; i++) {
- data->fan[i] =
- it87_read_value(client, IT87_REG_FAN(i));
+ /* Skip disabled fans */
+ if (!(data->has_fan & (1 << i)))
+ continue;
+
data->fan_min[i] =
it87_read_value(client, IT87_REG_FAN_MIN(i));
+ data->fan[i] = it87_read_value(client,
+ IT87_REG_FAN(i));
+ /* Add high byte if in 16-bit mode */
+ if (data->type == it8716 || data->type == it8718) {
+ data->fan[i] |= it87_read_value(client,
+ IT87_REG_FANX(i)) << 8;
+ data->fan_min[i] |= it87_read_value(client,
+ IT87_REG_FANX_MIN(i)) << 8;
+ }
}
for (i = 0; i < 3; i++) {
data->temp[i] =
it87_read_value(client, IT87_REG_TEMP_LOW(i));
}
- i = it87_read_value(client, IT87_REG_FAN_DIV);
- data->fan_div[0] = i & 0x07;
- data->fan_div[1] = (i >> 3) & 0x07;
- data->fan_div[2] = (i & 0x40) ? 3 : 1;
+ /* Newer chips don't have clock dividers */
+ if ((data->has_fan & 0x07) && data->type != it8716
+ && data->type != it8718) {
+ i = it87_read_value(client, IT87_REG_FAN_DIV);
+ data->fan_div[0] = i & 0x07;
+ data->fan_div[1] = (i >> 3) & 0x07;
+ data->fan_div[2] = (i & 0x40) ? 3 : 1;
+ }
data->alarms =
it87_read_value(client, IT87_REG_ALARM1) |
data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE);
/* The 8705 does not have VID capability */
- if (data->type == it8712) {
+ if (data->type == it8712 || data->type == it8716) {
data->vid = it87_read_value(client, IT87_REG_VID);
- data->vid &= 0x1f;
+ /* The older IT8712F revisions had only 5 VID pins,
+ but we assume it is always safe to read 6 bits. */
+ data->vid &= 0x3f;
}
data->last_updated = jiffies;
data->valid = 1;
}
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return data;
}
static void __exit sm_it87_exit(void)
{
- i2c_isa_del_driver(&it87_isa_driver);
+ if (isa_address)
+ i2c_isa_del_driver(&it87_isa_driver);
i2c_del_driver(&it87_driver);
}
-MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>");
-MODULE_DESCRIPTION("IT8705F, IT8712F, Sis950 driver");
+MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>, "
+ "Jean Delvare <khali@linux-fr.org>");
+MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F, 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);
projects / linux-2.6-omap-h63xx.git / blobdiff