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authorJean Delvare <khali@linux-fr.org>2010-10-28 20:31:49 +0200
committerJean Delvare <khali@endymion.delvare>2010-10-28 20:31:49 +0200
commit4275fcd65d3b4a504b7779e532c81a927afd28c0 (patch)
tree292e76b31cb801621ae578fde62c1a88b9c4bba5 /drivers/hwmon/pcf8591.c
parent24377101023d3c66136123bd8b20441814da6a90 (diff)
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>
Diffstat (limited to 'drivers/hwmon/pcf8591.c')
-rw-r--r--drivers/hwmon/pcf8591.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/hwmon/pcf8591.c b/drivers/hwmon/pcf8591.c
index d44787949851..d7df0e6c1ef4 100644
--- a/drivers/hwmon/pcf8591.c
+++ b/drivers/hwmon/pcf8591.c
@@ -23,6 +23,8 @@
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/mutex.h>
+#include <linux/err.h>
+#include <linux/hwmon.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c,
@@ -71,6 +73,7 @@ MODULE_PARM_DESC(input_mode,
#define REG_TO_SIGNED(reg) (((reg) & 0x80)?((reg) - 256):(reg))
struct pcf8591_data {
+ struct device *hwmon_dev;
struct mutex update_lock;
u8 control;
@@ -221,6 +224,12 @@ static int pcf8591_probe(struct i2c_client *client,
goto exit_sysfs_remove;
}
+ data->hwmon_dev = hwmon_device_register(&client->dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ err = PTR_ERR(data->hwmon_dev);
+ goto exit_sysfs_remove;
+ }
+
return 0;
exit_sysfs_remove:
@@ -234,6 +243,9 @@ exit:
static int pcf8591_remove(struct i2c_client *client)
{
+ struct pcf8591_data *data = i2c_get_clientdata(client);
+
+ hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &pcf8591_attr_group_opt);
sysfs_remove_group(&client->dev.kobj, &pcf8591_attr_group);
kfree(i2c_get_clientdata(client));