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hwmon: convert it87 to platform driver 

This is the patch for converting it87 to a platform driver (and remove i2c-isa).

Signed-off-by: Corentin LABBE <corentin.labbe@geomatys.fr>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
This commit is contained in:
corentin.labbe 2007-06-13 20:27:36 +02:00 committed by Mark M. Hoffman
parent 04a6217df2
commit b74f3fdd98
2 changed files with 275 additions and 219 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/hwmon/Kconfig
View File

@ -250,8 +250,6 @@ config SENSORS_CORETEMP
config SENSORS_IT87
tristate "ITE IT87xx and compatibles"
depends on I2C
select I2C_ISA
select HWMON_VID
help
If you say yes here you get support for ITE IT8705F, IT8712F,

492
drivers/hwmon/it87.c
View File

@ -31,8 +31,7 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-isa.h>
#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
@ -41,10 +40,12 @@
#include <linux/sysfs.h>
#include <asm/io.h>
#define DRVNAME "it87"
static unsigned short isa_address;
enum chips { it87, it8712, it8716, it8718 };
static struct platform_device *pdev;
#define REG 0x2e /* The register to read/write */
#define DEV 0x07 /* Register: Logical device select */
#define VAL 0x2f /* The value to read/write */
@ -112,10 +113,6 @@ static int update_vbat;
/* Not all BIOSes properly configure the PWM registers */
static int fix_pwm_polarity;
/* Values read from Super-I/O config space */
static u16 chip_type;
static u8 vid_value;
/* Many IT87 constants specified below */
/* Length of ISA address segment */
@ -216,13 +213,20 @@ static const unsigned int pwm_freq[8] = {
};
struct it87_sio_data {
enum chips type;
/* Values read from Super-I/O config space */
u8 vid_value;
};
/* For each registered chip, we need to keep some data in memory.
The structure is dynamically allocated. */
struct it87_data {
struct i2c_client client;
struct class_device *class_dev;
enum chips type;
unsigned short addr;
const char *name;
struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
@ -247,26 +251,25 @@ struct it87_data {
};
static int it87_detect(struct i2c_adapter *adapter);
static int it87_detach_client(struct i2c_client *client);
static int it87_probe(struct platform_device *pdev);
static int it87_remove(struct platform_device *pdev);
static int it87_read_value(struct i2c_client *client, u8 reg);
static void it87_write_value(struct i2c_client *client, u8 reg, u8 value);
static int it87_read_value(struct it87_data *data, u8 reg);
static void it87_write_value(struct it87_data *data, 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 int it87_check_pwm(struct device *dev);
static void it87_init_device(struct platform_device *pdev);
static struct i2c_driver it87_isa_driver = {
static struct platform_driver it87_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "it87-isa",
.name = DRVNAME,
},
.attach_adapter = it87_detect,
.detach_client = it87_detach_client,
.probe = it87_probe,
.remove = __devexit_p(it87_remove),
};
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
char *buf)
{
@ -303,13 +306,12 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
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);
struct it87_data *data = dev_get_drvdata(dev);
unsigned long val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_min[nr] = IN_TO_REG(val);
it87_write_value(client, IT87_REG_VIN_MIN(nr),
it87_write_value(data, IT87_REG_VIN_MIN(nr),
data->in_min[nr]);
mutex_unlock(&data->update_lock);
return count;
@ -320,13 +322,12 @@ static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
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);
struct it87_data *data = dev_get_drvdata(dev);
unsigned long val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->in_max[nr] = IN_TO_REG(val);
it87_write_value(client, IT87_REG_VIN_MAX(nr),
it87_write_value(data, IT87_REG_VIN_MAX(nr),
data->in_max[nr]);
mutex_unlock(&data->update_lock);
return count;
@ -394,13 +395,12 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
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);
struct it87_data *data = dev_get_drvdata(dev);
int val = simple_strtol(buf, NULL, 10);
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]);
it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
mutex_unlock(&data->update_lock);
return count;
}
@ -410,13 +410,12 @@ static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
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);
struct it87_data *data = dev_get_drvdata(dev);
int val = simple_strtol(buf, NULL, 10);
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]);
it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
mutex_unlock(&data->update_lock);
return count;
}
@ -453,8 +452,7 @@ static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
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);
struct it87_data *data = dev_get_drvdata(dev);
int val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
@ -470,7 +468,7 @@ static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
mutex_unlock(&data->update_lock);
return -EINVAL;
}
it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor);
it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
mutex_unlock(&data->update_lock);
return count;
}
@ -544,13 +542,12 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
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);
struct it87_data *data = dev_get_drvdata(dev);
int val = simple_strtol(buf, NULL, 10);
u8 reg;
mutex_lock(&data->update_lock);
reg = it87_read_value(client, IT87_REG_FAN_DIV);
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;
@ -558,7 +555,7 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
}
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]);
it87_write_value(data, IT87_REG_FAN_MIN(nr), data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
@ -568,14 +565,13 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
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);
struct it87_data *data = dev_get_drvdata(dev);
unsigned long val = simple_strtoul(buf, NULL, 10);
int min;
u8 old;
mutex_lock(&data->update_lock);
old = it87_read_value(client, IT87_REG_FAN_DIV);
old = it87_read_value(data, IT87_REG_FAN_DIV);
/* Save fan min limit */
min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
@ -596,11 +592,11 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
val |= (data->fan_div[1] & 0x07) << 3;
if (data->fan_div[2] == 3)
val |= 0x1 << 6;
it87_write_value(client, IT87_REG_FAN_DIV, val);
it87_write_value(data, IT87_REG_FAN_DIV, val);
/* 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]);
it87_write_value(data, IT87_REG_FAN_MIN(nr), data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
@ -611,8 +607,7 @@ static ssize_t set_pwm_enable(struct device *dev,
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);
struct it87_data *data = dev_get_drvdata(dev);
int val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
@ -620,17 +615,17 @@ static ssize_t set_pwm_enable(struct device *dev,
if (val == 0) {
int tmp;
/* make sure the fan is on when in on/off mode */
tmp = it87_read_value(client, IT87_REG_FAN_CTL);
it87_write_value(client, IT87_REG_FAN_CTL, tmp | (1 << nr));
tmp = it87_read_value(data, IT87_REG_FAN_CTL);
it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
/* set on/off mode */
data->fan_main_ctrl &= ~(1 << nr);
it87_write_value(client, 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) {
/* set SmartGuardian mode */
data->fan_main_ctrl |= (1 << nr);
it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
/* 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]));
it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
} else {
mutex_unlock(&data->update_lock);
return -EINVAL;
@ -645,8 +640,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
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);
struct it87_data *data = dev_get_drvdata(dev);
int val = simple_strtol(buf, NULL, 10);
if (val < 0 || val > 255)
@ -655,15 +649,14 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
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]));
it87_write_value(data, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t set_pwm_freq(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
struct it87_data *data = dev_get_drvdata(dev);
unsigned long val = simple_strtoul(buf, NULL, 10);
int i;
@ -674,9 +667,9 @@ static ssize_t set_pwm_freq(struct device *dev,
}
mutex_lock(&data->update_lock);
data->fan_ctl = it87_read_value(client, IT87_REG_FAN_CTL) & 0x8f;
data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
data->fan_ctl |= i << 4;
it87_write_value(client, IT87_REG_FAN_CTL, data->fan_ctl);
it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
mutex_unlock(&data->update_lock);
return count;
@ -731,15 +724,14 @@ static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr,
{
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);
struct it87_data *data = dev_get_drvdata(dev);
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),
it87_write_value(data, IT87_REG_FAN_MIN(nr),
data->fan_min[nr] & 0xff);
it87_write_value(client, IT87_REG_FANX_MIN(nr),
it87_write_value(data, IT87_REG_FANX_MIN(nr),
data->fan_min[nr] >> 8);
mutex_unlock(&data->update_lock);
return count;
@ -777,8 +769,7 @@ show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t
store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
struct it87_data *data = dev_get_drvdata(dev);
u32 val;
val = simple_strtoul(buf, NULL, 10);
@ -796,6 +787,14 @@ show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
static ssize_t show_name(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct it87_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", data->name);
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
static struct attribute *it87_attributes[] = {
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr,
@ -837,6 +836,7 @@ static struct attribute *it87_attributes[] = {
&sensor_dev_attr_temp3_type.dev_attr.attr,
&dev_attr_alarms.attr,
&dev_attr_name.attr,
NULL
};
@ -879,18 +879,36 @@ static const struct attribute_group it87_group_opt = {
};
/* SuperIO detection - will change isa_address if a chip is found */
static int __init it87_find(unsigned short *address)
static int __init it87_find(unsigned short *address,
struct it87_sio_data *sio_data)
{
int err = -ENODEV;
u16 chip_type;
superio_enter();
chip_type = superio_inw(DEVID);
if (chip_type != IT8712F_DEVID
&& chip_type != IT8716F_DEVID
&& chip_type != IT8726F_DEVID
&& chip_type != IT8718F_DEVID
&& chip_type != IT8705F_DEVID)
goto exit;
switch (chip_type) {
case IT8705F_DEVID:
sio_data->type = it87;
break;
case IT8712F_DEVID:
sio_data->type = it8712;
break;
case IT8716F_DEVID:
case IT8726F_DEVID:
sio_data->type = it8716;
break;
case IT8718F_DEVID:
sio_data->type = it8718;
break;
case 0xffff: /* No device at all */
goto exit;
default:
pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n",
chip_type);
goto exit;
}
superio_select(PME);
if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
@ -914,7 +932,7 @@ static int __init it87_find(unsigned short *address)
superio_select(GPIO);
if (chip_type == it8718)
vid_value = superio_inb(IT87_SIO_VID_REG);
sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
reg = superio_inb(IT87_SIO_PINX2_REG);
if (reg & (1 << 0))
@ -928,18 +946,26 @@ static int __init it87_find(unsigned short *address)
return err;
}
/* This function is called by i2c_probe */
static int it87_detect(struct i2c_adapter *adapter)
static int __devinit it87_probe(struct platform_device *pdev)
{
struct i2c_client *new_client;
struct it87_data *data;
struct resource *res;
struct device *dev = &pdev->dev;
struct it87_sio_data *sio_data = dev->platform_data;
int err = 0;
const char *name;
int enable_pwm_interface;
static const char *names[] = {
"it87",
"it8712",
"it8716",
"it8718",
};
/* Reserve the ISA region */
if (!request_region(isa_address, IT87_EXTENT,
it87_isa_driver.driver.name)){
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!request_region(res->start, IT87_EXTENT, DRVNAME)) {
dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
(unsigned long)res->start,
(unsigned long)(res->start + IT87_EXTENT - 1));
err = -EBUSY;
goto ERROR0;
}
@ -949,131 +975,104 @@ static int it87_detect(struct i2c_adapter *adapter)
goto ERROR1;
}
new_client = &data->client;
i2c_set_clientdata(new_client, data);
new_client->addr = isa_address;
new_client->adapter = adapter;
new_client->driver = &it87_isa_driver;
data->addr = res->start;
data->type = sio_data->type;
data->name = names[sio_data->type];
/* Now, we do the remaining detection. */
if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80)
|| it87_read_value(new_client, IT87_REG_CHIPID) != 0x90) {
if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
|| it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
err = -ENODEV;
goto ERROR2;
}
/* Determine the chip type. */
switch (chip_type) {
case IT8712F_DEVID:
data->type = it8712;
name = "it8712";
break;
case IT8726F_DEVID:
/* fall through */
case IT8716F_DEVID:
data->type = it8716;
name = "it8716";
break;
case IT8718F_DEVID:
data->type = it8718;
name = "it8718";
break;
default:
data->type = it87;
name = "it87";
}
platform_set_drvdata(pdev, data);
/* Fill in the remaining client fields and put it into the global list */
strlcpy(new_client->name, name, I2C_NAME_SIZE);
mutex_init(&data->update_lock);
/* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client)))
goto ERROR2;
/* Check PWM configuration */
enable_pwm_interface = it87_check_pwm(new_client);
enable_pwm_interface = it87_check_pwm(dev);
/* Initialize the IT87 chip */
it87_init_client(new_client, data);
it87_init_device(pdev);
/* Register sysfs hooks */
if ((err = sysfs_create_group(&new_client->dev.kobj, &it87_group)))
goto ERROR3;
if ((err = sysfs_create_group(&dev->kobj, &it87_group)))
goto ERROR2;
/* Do not create fan files for disabled fans */
if (data->type == it8716 || data->type == it8718) {
/* 16-bit tachometers */
if (data->has_fan & (1 << 0)) {
if ((err = device_create_file(&new_client->dev,
if ((err = device_create_file(dev,
&sensor_dev_attr_fan1_input16.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_fan1_min16.dev_attr)))
goto ERROR4;
}
if (data->has_fan & (1 << 1)) {
if ((err = device_create_file(&new_client->dev,
if ((err = device_create_file(dev,
&sensor_dev_attr_fan2_input16.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_fan2_min16.dev_attr)))
goto ERROR4;
}
if (data->has_fan & (1 << 2)) {
if ((err = device_create_file(&new_client->dev,
if ((err = device_create_file(dev,
&sensor_dev_attr_fan3_input16.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_fan3_min16.dev_attr)))
goto ERROR4;
}
} else {
/* 8-bit tachometers with clock divider */
if (data->has_fan & (1 << 0)) {
if ((err = device_create_file(&new_client->dev,
if ((err = device_create_file(dev,
&sensor_dev_attr_fan1_input.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_fan1_min.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_fan1_div.dev_attr)))
goto ERROR4;
}
if (data->has_fan & (1 << 1)) {
if ((err = device_create_file(&new_client->dev,
if ((err = device_create_file(dev,
&sensor_dev_attr_fan2_input.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_fan2_min.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_fan2_div.dev_attr)))
goto ERROR4;
}
if (data->has_fan & (1 << 2)) {
if ((err = device_create_file(&new_client->dev,
if ((err = device_create_file(dev,
&sensor_dev_attr_fan3_input.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_fan3_min.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_fan3_div.dev_attr)))
goto ERROR4;
}
}
if (enable_pwm_interface) {
if ((err = device_create_file(&new_client->dev,
if ((err = device_create_file(dev,
&sensor_dev_attr_pwm1_enable.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_pwm2_enable.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_pwm3_enable.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_pwm1.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_pwm2.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&sensor_dev_attr_pwm3.dev_attr))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&dev_attr_pwm1_freq))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&dev_attr_pwm2_freq))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&dev_attr_pwm3_freq)))
goto ERROR4;
}
@ -1082,15 +1081,15 @@ static int it87_detect(struct i2c_adapter *adapter)
|| data->type == it8718) {
data->vrm = vid_which_vrm();
/* VID reading from Super-I/O config space if available */
data->vid = vid_value;
if ((err = device_create_file(&new_client->dev,
data->vid = sio_data->vid_value;
if ((err = device_create_file(dev,
&dev_attr_vrm))
|| (err = device_create_file(&new_client->dev,
|| (err = device_create_file(dev,
&dev_attr_cpu0_vid)))
goto ERROR4;
}
data->class_dev = hwmon_device_register(&new_client->dev);
data->class_dev = hwmon_device_register(dev);
if (IS_ERR(data->class_dev)) {
err = PTR_ERR(data->class_dev);
goto ERROR4;
@ -1099,31 +1098,27 @@ static int it87_detect(struct i2c_adapter *adapter)
return 0;
ERROR4:
sysfs_remove_group(&new_client->dev.kobj, &it87_group);
sysfs_remove_group(&new_client->dev.kobj, &it87_group_opt);
ERROR3:
i2c_detach_client(new_client);
sysfs_remove_group(&dev->kobj, &it87_group);
sysfs_remove_group(&dev->kobj, &it87_group_opt);
ERROR2:
platform_set_drvdata(pdev, NULL);
kfree(data);
ERROR1:
release_region(isa_address, IT87_EXTENT);
release_region(res->start, IT87_EXTENT);
ERROR0:
return err;
}
static int it87_detach_client(struct i2c_client *client)
static int __devexit it87_remove(struct platform_device *pdev)
{
struct it87_data *data = i2c_get_clientdata(client);
int err;
struct it87_data *data = platform_get_drvdata(pdev);
hwmon_device_unregister(data->class_dev);
sysfs_remove_group(&client->dev.kobj, &it87_group);
sysfs_remove_group(&client->dev.kobj, &it87_group_opt);
sysfs_remove_group(&pdev->dev.kobj, &it87_group);
sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt);
if ((err = i2c_detach_client(client)))
return err;
release_region(client->addr, IT87_EXTENT);
release_region(data->addr, IT87_EXTENT);
platform_set_drvdata(pdev, NULL);
kfree(data);
return 0;
@ -1132,28 +1127,29 @@ static int it87_detach_client(struct i2c_client *client)
/* Must be called with data->update_lock held, except during initialization.
We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
would slow down the IT87 access and should not be necessary. */
static int it87_read_value(struct i2c_client *client, u8 reg)
static int it87_read_value(struct it87_data *data, u8 reg)
{
outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET);
return inb_p(client->addr + IT87_DATA_REG_OFFSET);
outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
return inb_p(data->addr + IT87_DATA_REG_OFFSET);
}
/* Must be called with data->update_lock held, except during initialization.
We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
would slow down the IT87 access and should not be necessary. */
static void it87_write_value(struct i2c_client *client, u8 reg, u8 value)
static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
{
outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET);
outb_p(value, client->addr + IT87_DATA_REG_OFFSET);
outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
}
/* Return 1 if and only if the PWM interface is safe to use */
static int it87_check_pwm(struct i2c_client *client)
static int __devinit it87_check_pwm(struct device *dev)
{
struct it87_data *data = dev_get_drvdata(dev);
/* Some BIOSes fail to correctly configure the IT87 fans. All fans off
* and polarity set to active low is sign that this is the case so we
* disable pwm control to protect the user. */
int tmp = it87_read_value(client, IT87_REG_FAN_CTL);
int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
if ((tmp & 0x87) == 0) {
if (fix_pwm_polarity) {
/* The user asks us to attempt a chip reconfiguration.
@ -1163,7 +1159,7 @@ static int it87_check_pwm(struct i2c_client *client)
u8 pwm[3];
for (i = 0; i < 3; i++)
pwm[i] = it87_read_value(client,
pwm[i] = it87_read_value(data,
IT87_REG_PWM(i));
/* If any fan is in automatic pwm mode, the polarity
@ -1171,26 +1167,26 @@ static int it87_check_pwm(struct i2c_client *client)
* better don't change anything (but still disable the
* PWM interface). */
if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
dev_info(&client->dev, "Reconfiguring PWM to "
dev_info(dev, "Reconfiguring PWM to "
"active high polarity\n");
it87_write_value(client, IT87_REG_FAN_CTL,
it87_write_value(data, IT87_REG_FAN_CTL,
tmp | 0x87);
for (i = 0; i < 3; i++)
it87_write_value(client,
it87_write_value(data,
IT87_REG_PWM(i),
0x7f & ~pwm[i]);
return 1;
}
dev_info(&client->dev, "PWM configuration is "
dev_info(dev, "PWM configuration is "
"too broken to be fixed\n");
}
dev_info(&client->dev, "Detected broken BIOS "
dev_info(dev, "Detected broken BIOS "
"defaults, disabling PWM interface\n");
return 0;
} else if (fix_pwm_polarity) {
dev_info(&client->dev, "PWM configuration looks "
dev_info(dev, "PWM configuration looks "
"sane, won't touch\n");
}
@ -1198,8 +1194,9 @@ static int it87_check_pwm(struct i2c_client *client)
}
/* Called when we have found a new IT87. */
static void it87_init_client(struct i2c_client *client, struct it87_data *data)
static void __devinit it87_init_device(struct platform_device *pdev)
{
struct it87_data *data = platform_get_drvdata(pdev);
int tmp, i;
/* initialize to sane defaults:
@ -1219,48 +1216,48 @@ static void it87_init_client(struct i2c_client *client, struct it87_data *data)
* 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));
tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
if (tmp == 0xff)
it87_write_value(client, IT87_REG_VIN_MIN(i), 0);
it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
}
for (i = 0; i < 3; i++) {
tmp = it87_read_value(client, IT87_REG_TEMP_HIGH(i));
tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
if (tmp == 0xff)
it87_write_value(client, IT87_REG_TEMP_HIGH(i), 127);
it87_write_value(data, 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);
tmp = it87_read_value(data, IT87_REG_TEMP_ENABLE);
if ((tmp & 0x3f) == 0) {
/* Temp1,Temp3=thermistor; Temp2=thermal diode */
tmp = (tmp & 0xc0) | 0x2a;
it87_write_value(client, IT87_REG_TEMP_ENABLE, tmp);
it87_write_value(data, IT87_REG_TEMP_ENABLE, tmp);
}
data->sensor = tmp;
/* Check if voltage monitors are reset manually or by some reason */
tmp = it87_read_value(client, IT87_REG_VIN_ENABLE);
tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
if ((tmp & 0xff) == 0) {
/* Enable all voltage monitors */
it87_write_value(client, IT87_REG_VIN_ENABLE, 0xff);
it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
}
/* Check if tachometers are reset manually or by some reason */
data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL);
data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
if ((data->fan_main_ctrl & 0x70) == 0) {
/* Enable all fan tachometers */
data->fan_main_ctrl |= 0x70;
it87_write_value(client, 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;
/* Set tachometers to 16-bit mode if needed */
if (data->type == it8716 || data->type == it8718) {
tmp = it87_read_value(client, IT87_REG_FAN_16BIT);
tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
if (~tmp & 0x07 & data->has_fan) {
dev_dbg(&client->dev,
dev_dbg(&pdev->dev,
"Setting fan1-3 to 16-bit mode\n");
it87_write_value(client, IT87_REG_FAN_16BIT,
it87_write_value(data, IT87_REG_FAN_16BIT,
tmp | 0x07);
}
}
@ -1270,7 +1267,7 @@ static void it87_init_client(struct i2c_client *client, struct it87_data *data)
for (i = 0; i < 3; i++) {
if (data->fan_main_ctrl & (1 << i)) {
/* pwm mode */
tmp = it87_read_value(client, IT87_REG_PWM(i));
tmp = it87_read_value(data, IT87_REG_PWM(i));
if (tmp & 0x80) {
/* automatic pwm - not yet implemented, but
* leave the settings made by the BIOS alone
@ -1284,15 +1281,14 @@ static void it87_init_client(struct i2c_client *client, struct it87_data *data)
}
/* Start monitoring */
it87_write_value(client, IT87_REG_CONFIG,
(it87_read_value(client, IT87_REG_CONFIG) & 0x36)
it87_write_value(data, IT87_REG_CONFIG,
(it87_read_value(data, IT87_REG_CONFIG) & 0x36)
| (update_vbat ? 0x41 : 0x01));
}
static struct it87_data *it87_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
struct it87_data *data = dev_get_drvdata(dev);
int i;
mutex_lock(&data->update_lock);
@ -1303,20 +1299,20 @@ static struct it87_data *it87_update_device(struct device *dev)
if (update_vbat) {
/* Cleared after each update, so reenable. Value
returned by this read will be previous value */
it87_write_value(client, IT87_REG_CONFIG,
it87_read_value(client, IT87_REG_CONFIG) | 0x40);
it87_write_value(data, IT87_REG_CONFIG,
it87_read_value(data, IT87_REG_CONFIG) | 0x40);
}
for (i = 0; i <= 7; i++) {
data->in[i] =
it87_read_value(client, IT87_REG_VIN(i));
it87_read_value(data, IT87_REG_VIN(i));
data->in_min[i] =
it87_read_value(client, IT87_REG_VIN_MIN(i));
it87_read_value(data, IT87_REG_VIN_MIN(i));
data->in_max[i] =
it87_read_value(client, 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(client, IT87_REG_VIN(8));
it87_read_value(data, IT87_REG_VIN(8));
for (i = 0; i < 3; i++) {
/* Skip disabled fans */
@ -1324,46 +1320,47 @@ static struct it87_data *it87_update_device(struct device *dev)
continue;
data->fan_min[i] =
it87_read_value(client, IT87_REG_FAN_MIN(i));
data->fan[i] = it87_read_value(client,
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 */
if (data->type == it8716 || data->type == it8718) {
data->fan[i] |= it87_read_value(client,
data->fan[i] |= it87_read_value(data,
IT87_REG_FANX(i)) << 8;
data->fan_min[i] |= it87_read_value(client,
data->fan_min[i] |= it87_read_value(data,
IT87_REG_FANX_MIN(i)) << 8;
}
}
for (i = 0; i < 3; i++) {
data->temp[i] =
it87_read_value(client, IT87_REG_TEMP(i));
it87_read_value(data, IT87_REG_TEMP(i));
data->temp_high[i] =
it87_read_value(client, IT87_REG_TEMP_HIGH(i));
it87_read_value(data, IT87_REG_TEMP_HIGH(i));
data->temp_low[i] =
it87_read_value(client, IT87_REG_TEMP_LOW(i));
it87_read_value(data, IT87_REG_TEMP_LOW(i));
}
/* 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);
i = it87_read_value(data, 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) |
(it87_read_value(client, IT87_REG_ALARM2) << 8) |
(it87_read_value(client, IT87_REG_ALARM3) << 16);
data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL);
data->fan_ctl = it87_read_value(client, IT87_REG_FAN_CTL);
it87_read_value(data, IT87_REG_ALARM1) |
(it87_read_value(data, IT87_REG_ALARM2) << 8) |
(it87_read_value(data, IT87_REG_ALARM3) << 16);
data->fan_main_ctrl = it87_read_value(data,
IT87_REG_FAN_MAIN_CTRL);
data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE);
data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
/* The 8705 does not have VID capability */
if (data->type == it8712 || data->type == it8716) {
data->vid = it87_read_value(client, IT87_REG_VID);
data->vid = it87_read_value(data, IT87_REG_VID);
/* The older IT8712F revisions had only 5 VID pins,
but we assume it is always safe to read 6 bits. */
data->vid &= 0x3f;
@ -1377,18 +1374,79 @@ static struct it87_data *it87_update_device(struct device *dev)
return data;
}
static int __init it87_device_add(unsigned short address,
const struct it87_sio_data *sio_data)
{
struct resource res = {
.start = address ,
.end = address + IT87_EXTENT - 1,
.name = DRVNAME,
.flags = IORESOURCE_IO,
};
int err;
pdev = platform_device_alloc(DRVNAME, address);
if (!pdev) {
err = -ENOMEM;
printk(KERN_ERR DRVNAME ": Device allocation failed\n");
goto exit;
}
err = platform_device_add_resources(pdev, &res, 1);
if (err) {
printk(KERN_ERR DRVNAME ": Device resource addition failed "
"(%d)\n", err);
goto exit_device_put;
}
err = platform_device_add_data(pdev, sio_data,
sizeof(struct it87_sio_data));
if (err) {
printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
goto exit_device_put;
}
err = platform_device_add(pdev);
if (err) {
printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
err);
goto exit_device_put;
}
return 0;
exit_device_put:
platform_device_put(pdev);
exit:
return err;
}
static int __init sm_it87_init(void)
{
int res;
int err;
unsigned short isa_address=0;
struct it87_sio_data sio_data;
if ((res = it87_find(&isa_address)))
return res;
return i2c_isa_add_driver(&it87_isa_driver);
err = it87_find(&isa_address, &sio_data);
if (err)
return err;
err = platform_driver_register(&it87_driver);
if (err)
return err;
err = it87_device_add(isa_address, &sio_data);
if (err){
platform_driver_unregister(&it87_driver);
return err;
}
return 0;
}
static void __exit sm_it87_exit(void)
{
i2c_isa_del_driver(&it87_isa_driver);
platform_device_unregister(pdev);
platform_driver_unregister(&it87_driver);
}