hwmon: (pcf8591) Register as a hwmon device
Register PCF8591 devices as hwmon devices. There's little point in implementing the standard sysfs interface if we don't register it in a way libsensors will pick it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Reviewed-by: Guenter Roeck <guenter.roeck@ericsson.com> Cc: Aurelien Jarno <aurelien@aurel32.net>
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2437710102
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@ -23,6 +23,8 @@
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/mutex.h>
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#include <linux/err.h>
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#include <linux/hwmon.h>
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/* Addresses to scan */
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static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c,
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@ -71,6 +73,7 @@ MODULE_PARM_DESC(input_mode,
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#define REG_TO_SIGNED(reg) (((reg) & 0x80)?((reg) - 256):(reg))
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struct pcf8591_data {
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struct device *hwmon_dev;
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struct mutex update_lock;
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u8 control;
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@ -221,6 +224,12 @@ static int pcf8591_probe(struct i2c_client *client,
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goto exit_sysfs_remove;
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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_sysfs_remove;
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}
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return 0;
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exit_sysfs_remove:
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@ -234,6 +243,9 @@ exit:
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static int pcf8591_remove(struct i2c_client *client)
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{
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struct pcf8591_data *data = i2c_get_clientdata(client);
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hwmon_device_unregister(data->hwmon_dev);
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sysfs_remove_group(&client->dev.kobj, &pcf8591_attr_group_opt);
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sysfs_remove_group(&client->dev.kobj, &pcf8591_attr_group);
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kfree(i2c_get_clientdata(client));
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