#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/sysfs.h>
/*
* Addresses to scan
*/
-static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
/*
* Insmod parameters
* Functions declaration
*/
-static int fscher_attach_adapter(struct i2c_adapter *adapter);
-static int fscher_detect(struct i2c_adapter *adapter, int address, int kind);
-static int fscher_detach_client(struct i2c_client *client);
+static int fscher_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int fscher_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info);
+static int fscher_remove(struct i2c_client *client);
static struct fscher_data *fscher_update_device(struct device *dev);
static void fscher_init_client(struct i2c_client *client);
* Driver data (common to all clients)
*/
+static const struct i2c_device_id fscher_id[] = {
+ { "fscher", fscher },
+ { }
+};
+
static struct i2c_driver fscher_driver = {
- .owner = THIS_MODULE,
- .name = "fscher",
- .id = I2C_DRIVERID_FSCHER,
- .flags = I2C_DF_NOTIFY,
- .attach_adapter = fscher_attach_adapter,
- .detach_client = fscher_detach_client,
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "fscher",
+ },
+ .probe = fscher_probe,
+ .remove = fscher_remove,
+ .id_table = fscher_id,
+ .detect = fscher_detect,
+ .address_data = &addr_data,
};
/*
*/
struct fscher_data {
- struct i2c_client client;
- struct class_device *class_dev;
- struct semaphore update_lock;
+ struct device *hwmon_dev;
+ struct mutex update_lock;
char valid; /* zero until following fields are valid */
unsigned long last_updated; /* in jiffies */
sysfs_control(FSCHER_REG_CONTROL)
sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET)
-#define device_create_file_fan(client, offset) \
-do { \
- device_create_file(&client->dev, &dev_attr_fan##offset##_status); \
- device_create_file(&client->dev, &dev_attr_pwm##offset); \
- device_create_file(&client->dev, &dev_attr_fan##offset##_div); \
- device_create_file(&client->dev, &dev_attr_fan##offset##_input); \
-} while (0)
-
-#define device_create_file_temp(client, offset) \
-do { \
- device_create_file(&client->dev, &dev_attr_temp##offset##_status); \
- device_create_file(&client->dev, &dev_attr_temp##offset##_input); \
-} while (0)
-
-#define device_create_file_in(client, offset) \
-do { \
- device_create_file(&client->dev, &dev_attr_in##offset##_input); \
-} while (0)
-
-#define device_create_file_revision(client) \
-do { \
- device_create_file(&client->dev, &dev_attr_revision); \
-} while (0)
-
-#define device_create_file_alarms(client) \
-do { \
- device_create_file(&client->dev, &dev_attr_alarms); \
-} while (0)
-
-#define device_create_file_control(client) \
-do { \
- device_create_file(&client->dev, &dev_attr_control); \
-} while (0)
-
-#define device_create_file_watchdog(client) \
-do { \
- device_create_file(&client->dev, &dev_attr_watchdog_status); \
- device_create_file(&client->dev, &dev_attr_watchdog_control); \
- device_create_file(&client->dev, &dev_attr_watchdog_preset); \
-} while (0)
-
+static struct attribute *fscher_attributes[] = {
+ &dev_attr_revision.attr,
+ &dev_attr_alarms.attr,
+ &dev_attr_control.attr,
+
+ &dev_attr_watchdog_status.attr,
+ &dev_attr_watchdog_control.attr,
+ &dev_attr_watchdog_preset.attr,
+
+ &dev_attr_in0_input.attr,
+ &dev_attr_in1_input.attr,
+ &dev_attr_in2_input.attr,
+
+ &dev_attr_fan1_status.attr,
+ &dev_attr_fan1_div.attr,
+ &dev_attr_fan1_input.attr,
+ &dev_attr_pwm1.attr,
+ &dev_attr_fan2_status.attr,
+ &dev_attr_fan2_div.attr,
+ &dev_attr_fan2_input.attr,
+ &dev_attr_pwm2.attr,
+ &dev_attr_fan3_status.attr,
+ &dev_attr_fan3_div.attr,
+ &dev_attr_fan3_input.attr,
+ &dev_attr_pwm3.attr,
+
+ &dev_attr_temp1_status.attr,
+ &dev_attr_temp1_input.attr,
+ &dev_attr_temp2_status.attr,
+ &dev_attr_temp2_input.attr,
+ &dev_attr_temp3_status.attr,
+ &dev_attr_temp3_input.attr,
+ NULL
+};
+
+static const struct attribute_group fscher_group = {
+ .attrs = fscher_attributes,
+};
+
/*
* Real code
*/
-static int fscher_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!(adapter->class & I2C_CLASS_HWMON))
- return 0;
- return i2c_probe(adapter, &addr_data, fscher_detect);
-}
-
-static int fscher_detect(struct i2c_adapter *adapter, int address, int kind)
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int fscher_detect(struct i2c_client *new_client, int kind,
+ struct i2c_board_info *info)
{
- struct i2c_client *new_client;
- struct fscher_data *data;
- int err = 0;
+ struct i2c_adapter *adapter = new_client->adapter;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- goto exit;
-
- /* OK. For now, we presume we have a valid client. We now create the
- * client structure, even though we cannot fill it completely yet.
- * But it allows us to access i2c_smbus_read_byte_data. */
- if (!(data = kmalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto exit;
- }
- memset(data, 0, sizeof(struct fscher_data));
-
- /* The common I2C client data is placed right before the
- * Hermes-specific data. */
- new_client = &data->client;
- i2c_set_clientdata(new_client, data);
- new_client->addr = address;
- new_client->adapter = adapter;
- new_client->driver = &fscher_driver;
- new_client->flags = 0;
+ return -ENODEV;
/* Do the remaining detection unless force or force_fscher parameter */
if (kind < 0) {
FSCHER_REG_IDENT_1) != 0x45) /* 'E' */
|| (i2c_smbus_read_byte_data(new_client,
FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */
- goto exit_free;
+ return -ENODEV;
}
- /* Fill in the remaining client fields and put it into the
- * global list */
- strlcpy(new_client->name, "fscher", I2C_NAME_SIZE);
- data->valid = 0;
- init_MUTEX(&data->update_lock);
+ strlcpy(info->type, "fscher", I2C_NAME_SIZE);
- /* Tell the I2C layer a new client has arrived */
- if ((err = i2c_attach_client(new_client)))
- goto exit_free;
+ return 0;
+}
- fscher_init_client(new_client);
+static int fscher_probe(struct i2c_client *new_client,
+ const struct i2c_device_id *id)
+{
+ struct fscher_data *data;
+ int err;
- /* Register sysfs hooks */
- data->class_dev = hwmon_device_register(&new_client->dev);
- if (IS_ERR(data->class_dev)) {
- err = PTR_ERR(data->class_dev);
- goto exit_detach;
+ data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
}
- device_create_file_revision(new_client);
- device_create_file_alarms(new_client);
- device_create_file_control(new_client);
- device_create_file_watchdog(new_client);
+ i2c_set_clientdata(new_client, data);
+ data->valid = 0;
+ mutex_init(&data->update_lock);
- device_create_file_in(new_client, 0);
- device_create_file_in(new_client, 1);
- device_create_file_in(new_client, 2);
+ fscher_init_client(new_client);
- device_create_file_fan(new_client, 1);
- device_create_file_fan(new_client, 2);
- device_create_file_fan(new_client, 3);
+ /* Register sysfs hooks */
+ if ((err = sysfs_create_group(&new_client->dev.kobj, &fscher_group)))
+ goto exit_free;
- device_create_file_temp(new_client, 1);
- device_create_file_temp(new_client, 2);
- device_create_file_temp(new_client, 3);
+ data->hwmon_dev = hwmon_device_register(&new_client->dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ err = PTR_ERR(data->hwmon_dev);
+ goto exit_remove_files;
+ }
return 0;
-exit_detach:
- i2c_detach_client(new_client);
+exit_remove_files:
+ sysfs_remove_group(&new_client->dev.kobj, &fscher_group);
exit_free:
kfree(data);
exit:
return err;
}
-static int fscher_detach_client(struct i2c_client *client)
+static int fscher_remove(struct i2c_client *client)
{
struct fscher_data *data = i2c_get_clientdata(client);
- int err;
-
- hwmon_device_unregister(data->class_dev);
- if ((err = i2c_detach_client(client)))
- return err;
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&client->dev.kobj, &fscher_group);
kfree(data);
return 0;
struct i2c_client *client = to_i2c_client(dev);
struct fscher_data *data = i2c_get_clientdata(client);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL);
data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE);
+ data->global_control = fscher_read_value(client,
+ FSCHER_REG_CONTROL);
data->last_updated = jiffies;
data->valid = 1;
}
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return data;
}
/* bits 0..1, 3..7 reserved => mask with 0x04 */
unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v;
fscher_write_value(client, reg, v);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
{
unsigned long v = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
return -EINVAL;
}
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
/* bits 2..7 reserved => mask with 0x03 */
data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03;
data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v;
fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
/* bits 2..7 reserved, 0 read only => mask with 0x02 */
unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v;
fscher_write_value(client, reg, v);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
/* bits 1..7 reserved => mask with 0x01 */
unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01;
- down(&data->update_lock);
- data->global_control &= ~v;
+ mutex_lock(&data->update_lock);
+ data->global_control = v;
fscher_write_value(client, reg, v);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
/* bits 0..3 reserved => mask with 0xf0 */
unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->watchdog[2] &= ~0xf0;
data->watchdog[2] |= v;
fscher_write_value(client, reg, data->watchdog[2]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
/* bits 0, 2..7 reserved => mask with 0x02 */
unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->watchdog[1] &= ~v;
fscher_write_value(client, reg, v);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
{
unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->watchdog[0] = v;
fscher_write_value(client, reg, data->watchdog[0]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
projects / linux-2.6 / blobdiff