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hwmon: (lm87) Use hwmon to create the sysfs groups
This is the expected thing for a hwmon driver to do, this changes the sysfs paths from, say: /sys/bus/i2c/devices/0-002c/temp1_input to: /sys/bus/i2c/devices/0-002c/hwmon/hwmon0/temp1_input Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Jason Gunthorpe
Guenter Roeck
parent
2b3d0c1953
commit
00a0c905ab
@ -154,7 +154,6 @@ static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C };
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*/
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struct lm87_data {
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struct device *hwmon_dev;
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struct mutex update_lock;
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char valid; /* zero until following fields are valid */
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unsigned long last_updated; /* In jiffies */
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@ -181,6 +180,8 @@ struct lm87_data {
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u16 alarms; /* register values, combined */
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u8 vid; /* register values, combined */
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u8 vrm;
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const struct attribute_group *attr_groups[6];
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};
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static inline int lm87_read_value(struct i2c_client *client, u8 reg)
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@ -195,7 +196,7 @@ static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value)
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static struct lm87_data *lm87_update_device(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct i2c_client *client = dev_get_drvdata(dev);
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struct lm87_data *data = i2c_get_clientdata(client);
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mutex_lock(&data->update_lock);
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@ -309,7 +310,7 @@ static ssize_t show_in_max(struct device *dev,
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static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct i2c_client *client = dev_get_drvdata(dev);
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struct lm87_data *data = i2c_get_clientdata(client);
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int nr = to_sensor_dev_attr(attr)->index;
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long val;
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@ -330,7 +331,7 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
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static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct i2c_client *client = dev_get_drvdata(dev);
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struct lm87_data *data = i2c_get_clientdata(client);
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int nr = to_sensor_dev_attr(attr)->index;
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long val;
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@ -396,7 +397,7 @@ static ssize_t show_temp_high(struct device *dev,
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static ssize_t set_temp_low(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct i2c_client *client = dev_get_drvdata(dev);
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struct lm87_data *data = i2c_get_clientdata(client);
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int nr = to_sensor_dev_attr(attr)->index;
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long val;
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@ -416,7 +417,7 @@ static ssize_t set_temp_low(struct device *dev, struct device_attribute *attr,
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static ssize_t set_temp_high(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct i2c_client *client = dev_get_drvdata(dev);
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struct lm87_data *data = i2c_get_clientdata(client);
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int nr = to_sensor_dev_attr(attr)->index;
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long val;
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@ -495,7 +496,7 @@ static ssize_t show_fan_div(struct device *dev,
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static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct i2c_client *client = dev_get_drvdata(dev);
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struct lm87_data *data = i2c_get_clientdata(client);
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int nr = to_sensor_dev_attr(attr)->index;
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long val;
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@ -522,7 +523,7 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
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static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct i2c_client *client = dev_get_drvdata(dev);
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struct lm87_data *data = i2c_get_clientdata(client);
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int nr = to_sensor_dev_attr(attr)->index;
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long val;
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@ -635,7 +636,7 @@ static ssize_t show_aout(struct device *dev, struct device_attribute *attr,
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static ssize_t set_aout(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct i2c_client *client = dev_get_drvdata(dev);
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struct lm87_data *data = i2c_get_clientdata(client);
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long val;
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int err;
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@ -841,23 +842,18 @@ static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info)
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return 0;
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}
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static void lm87_remove_files(struct i2c_client *client)
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static void lm87_restore_config(void *arg)
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{
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struct device *dev = &client->dev;
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struct i2c_client *client = arg;
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struct lm87_data *data = i2c_get_clientdata(client);
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sysfs_remove_group(&dev->kobj, &lm87_group);
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sysfs_remove_group(&dev->kobj, &lm87_group_in6);
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sysfs_remove_group(&dev->kobj, &lm87_group_fan1);
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sysfs_remove_group(&dev->kobj, &lm87_group_in7);
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sysfs_remove_group(&dev->kobj, &lm87_group_fan2);
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sysfs_remove_group(&dev->kobj, &lm87_group_temp3);
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sysfs_remove_group(&dev->kobj, &lm87_group_in0_5);
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sysfs_remove_group(&dev->kobj, &lm87_group_vid);
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lm87_write_value(client, LM87_REG_CONFIG, data->config);
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}
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static void lm87_init_client(struct i2c_client *client)
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static int lm87_init_client(struct i2c_client *client)
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{
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struct lm87_data *data = i2c_get_clientdata(client);
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int rc;
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if (dev_get_platdata(&client->dev)) {
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data->channel = *(u8 *)dev_get_platdata(&client->dev);
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@ -868,6 +864,10 @@ static void lm87_init_client(struct i2c_client *client)
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}
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data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F;
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rc = devm_add_action(&client->dev, lm87_restore_config, client);
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if (rc)
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return rc;
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if (!(data->config & 0x01)) {
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int i;
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@ -895,12 +895,15 @@ static void lm87_init_client(struct i2c_client *client)
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if ((data->config & 0x09) != 0x01)
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lm87_write_value(client, LM87_REG_CONFIG,
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(data->config & 0x77) | 0x01);
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return 0;
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}
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static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
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{
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struct lm87_data *data;
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struct device *hwmon_dev;
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int err;
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unsigned int group_tail = 0;
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data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL);
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if (!data)
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@ -910,7 +913,9 @@ static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
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mutex_init(&data->update_lock);
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/* Initialize the LM87 chip */
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lm87_init_client(client);
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err = lm87_init_client(client);
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if (err)
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return err;
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data->in_scale[0] = 2500;
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data->in_scale[1] = 2700;
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@ -921,72 +926,34 @@ static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
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data->in_scale[6] = 1875;
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data->in_scale[7] = 1875;
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/* Register sysfs hooks */
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err = sysfs_create_group(&client->dev.kobj, &lm87_group);
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if (err)
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goto exit_stop;
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/*
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* Construct the list of attributes, the list depends on the
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* configuration of the chip
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*/
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data->attr_groups[group_tail++] = &lm87_group;
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if (data->channel & CHAN_NO_FAN(0))
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data->attr_groups[group_tail++] = &lm87_group_in6;
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else
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data->attr_groups[group_tail++] = &lm87_group_fan1;
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if (data->channel & CHAN_NO_FAN(0)) {
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err = sysfs_create_group(&client->dev.kobj, &lm87_group_in6);
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if (err)
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goto exit_remove;
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} else {
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err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan1);
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if (err)
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goto exit_remove;
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}
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if (data->channel & CHAN_NO_FAN(1))
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data->attr_groups[group_tail++] = &lm87_group_in7;
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else
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data->attr_groups[group_tail++] = &lm87_group_fan2;
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if (data->channel & CHAN_NO_FAN(1)) {
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err = sysfs_create_group(&client->dev.kobj, &lm87_group_in7);
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if (err)
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goto exit_remove;
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} else {
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err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan2);
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if (err)
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goto exit_remove;
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}
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if (data->channel & CHAN_TEMP3) {
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err = sysfs_create_group(&client->dev.kobj, &lm87_group_temp3);
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if (err)
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goto exit_remove;
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} else {
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err = sysfs_create_group(&client->dev.kobj, &lm87_group_in0_5);
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if (err)
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goto exit_remove;
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}
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if (data->channel & CHAN_TEMP3)
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data->attr_groups[group_tail++] = &lm87_group_temp3;
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else
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data->attr_groups[group_tail++] = &lm87_group_in0_5;
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if (!(data->channel & CHAN_NO_VID)) {
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data->vrm = vid_which_vrm();
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err = sysfs_create_group(&client->dev.kobj, &lm87_group_vid);
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if (err)
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goto exit_remove;
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data->attr_groups[group_tail++] = &lm87_group_vid;
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}
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data->hwmon_dev = hwmon_device_register(&client->dev);
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if (IS_ERR(data->hwmon_dev)) {
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err = PTR_ERR(data->hwmon_dev);
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goto exit_remove;
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}
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return 0;
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exit_remove:
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lm87_remove_files(client);
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exit_stop:
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lm87_write_value(client, LM87_REG_CONFIG, data->config);
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return err;
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}
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static int lm87_remove(struct i2c_client *client)
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{
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struct lm87_data *data = i2c_get_clientdata(client);
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hwmon_device_unregister(data->hwmon_dev);
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lm87_remove_files(client);
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lm87_write_value(client, LM87_REG_CONFIG, data->config);
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return 0;
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hwmon_dev = devm_hwmon_device_register_with_groups(
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&client->dev, client->name, client, data->attr_groups);
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return PTR_ERR_OR_ZERO(hwmon_dev);
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}
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/*
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@ -1006,7 +973,6 @@ static struct i2c_driver lm87_driver = {
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.name = "lm87",
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},
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.probe = lm87_probe,
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.remove = lm87_remove,
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.id_table = lm87_id,
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.detect = lm87_detect,
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.address_list = normal_i2c,
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