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Commit ad9beea4 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (tmp102) Convert to use hwmon_device_register_with_groups 



Simplify code, reduce code size, and attach sysfs attributes to hwmon device.

Reviewed-by: default avatarJean Delvare <jdelvare@suse.de>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent fbd9af16

drivers/hwmon/tmp102.c

+20 −26
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ 
#define	TMP102_THIGH_REG		0x03



struct tmp102 {

	struct i2c_client *client;

	struct device *hwmon_dev;

	struct thermal_zone_device *tz;

	struct mutex lock;
@@ -77,9 +78,10 @@ static const u8 tmp102_reg[] = { 
	TMP102_THIGH_REG,

};



static struct tmp102 *tmp102_update_device(struct i2c_client *client)

static struct tmp102 *tmp102_update_device(struct device *dev)

{

	struct tmp102 *tmp102 = i2c_get_clientdata(client);

	struct tmp102 *tmp102 = dev_get_drvdata(dev);

	struct i2c_client *client = tmp102->client;



	mutex_lock(&tmp102->lock);

	if (time_after(jiffies, tmp102->last_update + HZ / 3)) {
@@ -98,7 +100,7 @@ static struct tmp102 *tmp102_update_device(struct i2c_client *client) 


static int tmp102_read_temp(void *dev, long *temp)

{

	struct tmp102 *tmp102 = tmp102_update_device(to_i2c_client(dev));

	struct tmp102 *tmp102 = tmp102_update_device(dev);



	*temp = tmp102->temp[0];
@@ -110,7 +112,7 @@ static ssize_t tmp102_show_temp(struct device *dev, 
				char *buf)

{

	struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);

	struct tmp102 *tmp102 = tmp102_update_device(to_i2c_client(dev));

	struct tmp102 *tmp102 = tmp102_update_device(dev);



	return sprintf(buf, "%d\n", tmp102->temp[sda->index]);

}
@@ -120,8 +122,8 @@ static ssize_t tmp102_set_temp(struct device *dev, 
			       const char *buf, size_t count)

{

	struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);

	struct i2c_client *client = to_i2c_client(dev);

	struct tmp102 *tmp102 = i2c_get_clientdata(client);

	struct tmp102 *tmp102 = dev_get_drvdata(dev);

	struct i2c_client *client = tmp102->client;

	long val;

	int status;
@@ -145,16 +147,13 @@ static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, tmp102_show_temp, 
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, tmp102_show_temp,

			  tmp102_set_temp, 2);



static struct attribute *tmp102_attributes[] = {

static struct attribute *tmp102_attrs[] = {

	&sensor_dev_attr_temp1_input.dev_attr.attr,

	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,

	&sensor_dev_attr_temp1_max.dev_attr.attr,

	NULL

};



static const struct attribute_group tmp102_attr_group = {

	.attrs = tmp102_attributes,

};

ATTRIBUTE_GROUPS(tmp102);



#define TMP102_CONFIG  (TMP102_CONF_TM | TMP102_CONF_EM | TMP102_CONF_CR1)

#define TMP102_CONFIG_RD_ONLY (TMP102_CONF_R0 | TMP102_CONF_R1 | TMP102_CONF_AL)
@@ -163,6 +162,7 @@ static int tmp102_probe(struct i2c_client *client, 
				  const struct i2c_device_id *id)

{

	struct device *dev = &client->dev;

	struct device *hwmon_dev;

	struct tmp102 *tmp102;

	int status;
@@ -178,6 +178,7 @@ static int tmp102_probe(struct i2c_client *client, 
		return -ENOMEM;



	i2c_set_clientdata(client, tmp102);

	tmp102->client = client;



	status = i2c_smbus_read_word_swapped(client, TMP102_CONF_REG);

	if (status < 0) {
@@ -205,19 +206,15 @@ static int tmp102_probe(struct i2c_client *client, 
	tmp102->last_update = jiffies - HZ;

	mutex_init(&tmp102->lock);



	status = sysfs_create_group(&dev->kobj, &tmp102_attr_group);

	if (status) {

		dev_dbg(dev, "could not create sysfs files\n");

		goto fail_restore_config;

	}

	tmp102->hwmon_dev = hwmon_device_register(dev);

	if (IS_ERR(tmp102->hwmon_dev)) {

	hwmon_dev = hwmon_device_register_with_groups(dev, client->name,

						      tmp102, tmp102_groups);

	if (IS_ERR(hwmon_dev)) {

		dev_dbg(dev, "unable to register hwmon device\n");

		status = PTR_ERR(tmp102->hwmon_dev);

		goto fail_remove_sysfs;

		status = PTR_ERR(hwmon_dev);

		goto fail_restore_config;

	}



	tmp102->tz = thermal_zone_of_sensor_register(dev, 0, dev,

	tmp102->hwmon_dev = hwmon_dev;

	tmp102->tz = thermal_zone_of_sensor_register(hwmon_dev, 0, hwmon_dev,

						     tmp102_read_temp, NULL);

	if (IS_ERR(tmp102->tz))

		tmp102->tz = NULL;
@@ -226,8 +223,6 @@ static int tmp102_probe(struct i2c_client *client, 


	return 0;



fail_remove_sysfs:

	sysfs_remove_group(&dev->kobj, &tmp102_attr_group);

fail_restore_config:

	i2c_smbus_write_word_swapped(client, TMP102_CONF_REG,

				     tmp102->config_orig);
@@ -238,9 +233,8 @@ static int tmp102_remove(struct i2c_client *client) 
{

	struct tmp102 *tmp102 = i2c_get_clientdata(client);



	thermal_zone_of_sensor_unregister(&client->dev, tmp102->tz);

	thermal_zone_of_sensor_unregister(tmp102->hwmon_dev, tmp102->tz);

	hwmon_device_unregister(tmp102->hwmon_dev);

	sysfs_remove_group(&client->dev.kobj, &tmp102_attr_group);



	/* Stop monitoring if device was stopped originally */

	if (tmp102->config_orig & TMP102_CONF_SD) {