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authorGuenter Roeck <linux@roeck-us.net>2014-02-12 10:26:12 +0400
committerGuenter Roeck <linux@roeck-us.net>2014-03-03 20:01:05 +0400
commit1577f94bcefb0ef88d4fb15313076a45b8bea8a1 (patch)
tree31de357a5d160859eb39969ad36f248d36e6bfa6 /drivers/hwmon
parent6c588b45b0d4005814cd3188f47db621b929c922 (diff)
downloadlinux-1577f94bcefb0ef88d4fb15313076a45b8bea8a1.tar.xz
hwmon: (max6650) Rearrange code to no longer require forward declarations
Cleanup only; no functional change. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/max6650.c228
1 files changed, 109 insertions, 119 deletions
diff --git a/drivers/hwmon/max6650.c b/drivers/hwmon/max6650.c
index 0cafc390db4d..26b24f772f5c 100644
--- a/drivers/hwmon/max6650.c
+++ b/drivers/hwmon/max6650.c
@@ -105,32 +105,6 @@ module_param(clock, int, S_IRUGO);
#define DIV_FROM_REG(reg) (1 << (reg & 7))
-static int max6650_probe(struct i2c_client *client,
- const struct i2c_device_id *id);
-static int max6650_init_client(struct i2c_client *client);
-static int max6650_remove(struct i2c_client *client);
-static struct max6650_data *max6650_update_device(struct device *dev);
-
-/*
- * Driver data (common to all clients)
- */
-
-static const struct i2c_device_id max6650_id[] = {
- { "max6650", 1 },
- { "max6651", 4 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, max6650_id);
-
-static struct i2c_driver max6650_driver = {
- .driver = {
- .name = "max6650",
- },
- .probe = max6650_probe,
- .remove = max6650_remove,
- .id_table = max6650_id,
-};
-
/*
* Client data (each client gets its own)
*/
@@ -151,6 +125,51 @@ struct max6650_data {
u8 alarm;
};
+static const u8 tach_reg[] = {
+ MAX6650_REG_TACH0,
+ MAX6650_REG_TACH1,
+ MAX6650_REG_TACH2,
+ MAX6650_REG_TACH3,
+};
+
+static struct max6650_data *max6650_update_device(struct device *dev)
+{
+ int i;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct max6650_data *data = i2c_get_clientdata(client);
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+ data->speed = i2c_smbus_read_byte_data(client,
+ MAX6650_REG_SPEED);
+ data->config = i2c_smbus_read_byte_data(client,
+ MAX6650_REG_CONFIG);
+ for (i = 0; i < data->nr_fans; i++) {
+ data->tach[i] = i2c_smbus_read_byte_data(client,
+ tach_reg[i]);
+ }
+ data->count = i2c_smbus_read_byte_data(client,
+ MAX6650_REG_COUNT);
+ data->dac = i2c_smbus_read_byte_data(client, MAX6650_REG_DAC);
+
+ /*
+ * Alarms are cleared on read in case the condition that
+ * caused the alarm is removed. Keep the value latched here
+ * for providing the register through different alarm files.
+ */
+ data->alarm |= i2c_smbus_read_byte_data(client,
+ MAX6650_REG_ALARM);
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
static ssize_t get_fan(struct device *dev, struct device_attribute *devattr,
char *buf)
{
@@ -539,64 +558,6 @@ static const struct attribute_group max6651_attr_grp = {
* Real code
*/
-static int max6650_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct max6650_data *data;
- int err;
-
- data = devm_kzalloc(&client->dev, sizeof(struct max6650_data),
- GFP_KERNEL);
- if (!data) {
- dev_err(&client->dev, "out of memory.\n");
- return -ENOMEM;
- }
-
- i2c_set_clientdata(client, data);
- mutex_init(&data->update_lock);
- data->nr_fans = id->driver_data;
-
- /*
- * Initialize the max6650 chip
- */
- err = max6650_init_client(client);
- if (err)
- return err;
-
- err = sysfs_create_group(&client->dev.kobj, &max6650_attr_grp);
- if (err)
- return err;
- /* 3 additional fan inputs for the MAX6651 */
- if (data->nr_fans == 4) {
- err = sysfs_create_group(&client->dev.kobj, &max6651_attr_grp);
- if (err)
- goto err_remove;
- }
-
- data->hwmon_dev = hwmon_device_register(&client->dev);
- if (!IS_ERR(data->hwmon_dev))
- return 0;
-
- err = PTR_ERR(data->hwmon_dev);
- dev_err(&client->dev, "error registering hwmon device.\n");
- if (data->nr_fans == 4)
- sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp);
-err_remove:
- sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
- return err;
-}
-
-static int max6650_remove(struct i2c_client *client)
-{
- struct max6650_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- if (data->nr_fans == 4)
- sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp);
- sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
- return 0;
-}
-
static int max6650_init_client(struct i2c_client *client)
{
struct max6650_data *data = i2c_get_clientdata(client);
@@ -684,51 +645,80 @@ static int max6650_init_client(struct i2c_client *client)
return 0;
}
-static const u8 tach_reg[] = {
- MAX6650_REG_TACH0,
- MAX6650_REG_TACH1,
- MAX6650_REG_TACH2,
- MAX6650_REG_TACH3,
-};
-
-static struct max6650_data *max6650_update_device(struct device *dev)
+static int max6650_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
- int i;
- struct i2c_client *client = to_i2c_client(dev);
- struct max6650_data *data = i2c_get_clientdata(client);
+ struct max6650_data *data;
+ int err;
- mutex_lock(&data->update_lock);
+ data = devm_kzalloc(&client->dev, sizeof(struct max6650_data),
+ GFP_KERNEL);
+ if (!data) {
+ dev_err(&client->dev, "out of memory.\n");
+ return -ENOMEM;
+ }
- if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
- data->speed = i2c_smbus_read_byte_data(client,
- MAX6650_REG_SPEED);
- data->config = i2c_smbus_read_byte_data(client,
- MAX6650_REG_CONFIG);
- for (i = 0; i < data->nr_fans; i++) {
- data->tach[i] = i2c_smbus_read_byte_data(client,
- tach_reg[i]);
- }
- data->count = i2c_smbus_read_byte_data(client,
- MAX6650_REG_COUNT);
- data->dac = i2c_smbus_read_byte_data(client, MAX6650_REG_DAC);
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->update_lock);
+ data->nr_fans = id->driver_data;
- /*
- * Alarms are cleared on read in case the condition that
- * caused the alarm is removed. Keep the value latched here
- * for providing the register through different alarm files.
- */
- data->alarm |= i2c_smbus_read_byte_data(client,
- MAX6650_REG_ALARM);
+ /*
+ * Initialize the max6650 chip
+ */
+ err = max6650_init_client(client);
+ if (err)
+ return err;
- data->last_updated = jiffies;
- data->valid = 1;
+ err = sysfs_create_group(&client->dev.kobj, &max6650_attr_grp);
+ if (err)
+ return err;
+ /* 3 additional fan inputs for the MAX6651 */
+ if (data->nr_fans == 4) {
+ err = sysfs_create_group(&client->dev.kobj, &max6651_attr_grp);
+ if (err)
+ goto err_remove;
}
- mutex_unlock(&data->update_lock);
+ data->hwmon_dev = hwmon_device_register(&client->dev);
+ if (!IS_ERR(data->hwmon_dev))
+ return 0;
- return data;
+ err = PTR_ERR(data->hwmon_dev);
+ dev_err(&client->dev, "error registering hwmon device.\n");
+ if (data->nr_fans == 4)
+ sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp);
+err_remove:
+ sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
+ return err;
}
+static int max6650_remove(struct i2c_client *client)
+{
+ struct max6650_data *data = i2c_get_clientdata(client);
+
+ hwmon_device_unregister(data->hwmon_dev);
+ if (data->nr_fans == 4)
+ sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp);
+ sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
+ return 0;
+}
+
+static const struct i2c_device_id max6650_id[] = {
+ { "max6650", 1 },
+ { "max6651", 4 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max6650_id);
+
+static struct i2c_driver max6650_driver = {
+ .driver = {
+ .name = "max6650",
+ },
+ .probe = max6650_probe,
+ .remove = max6650_remove,
+ .id_table = max6650_id,
+};
+
module_i2c_driver(max6650_driver);
MODULE_AUTHOR("Hans J. Koch");