xiaomi-sm8450/android_kernel_xiaomi_sm8450
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[PATCH] I2C hwmon: add hwmon sysfs class to drivers

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This patch modifies sensors chip drivers to make use of the new
sysfs class "hwmon".

Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Mark M. Hoffman
2005-07-15 21:39:18 -04:00
committad av Greg Kroah-Hartman
förälder 1236441f38
incheckning 943b0830ce
33 ändrade filer med 522 tillägg och 53 borttagningar
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16
drivers/hwmon/lm80.c
Visa fil

@@ -27,6 +27,8 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/hwmon.h>
#include <linux/err.h>
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c,
@@ -107,6 +109,7 @@ static inline long TEMP_FROM_REG(u16 temp)
struct lm80_data {
struct i2c_client client;
struct class_device *class_dev;
struct semaphore update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
@@ -451,6 +454,12 @@ int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
data->fan_min[1] = lm80_read_value(new_client, LM80_REG_FAN_MIN(2));
/* Register sysfs hooks */
data->class_dev = hwmon_device_register(&new_client->dev);
if (IS_ERR(data->class_dev)) {
err = PTR_ERR(data->class_dev);
goto error_detach;
}
device_create_file(&new_client->dev, &dev_attr_in0_min);
device_create_file(&new_client->dev, &dev_attr_in1_min);
device_create_file(&new_client->dev, &dev_attr_in2_min);
@@ -487,6 +496,8 @@ int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
return 0;
error_detach:
i2c_detach_client(new_client);
error_free:
kfree(data);
exit:
@@ -495,15 +506,18 @@ exit:
static int lm80_detach_client(struct i2c_client *client)
{
struct lm80_data *data = i2c_get_clientdata(client);
int err;
hwmon_device_unregister(data->class_dev);
if ((err = i2c_detach_client(client))) {
dev_err(&client->dev, "Client deregistration failed, "
"client not detached.\n");
return err;
}
kfree(i2c_get_clientdata(client));
kfree(data);
return 0;
}