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authorJeff Garzik <jgarzik@pobox.com>2005-09-08 05:43:49 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-09-08 05:43:49 -0400
commit1d6ae775d7a948c9575658eb41184fd2e506c0df (patch)
tree8128a28e89d82f13bb8e3a2160382240c66e2816 /drivers/hwmon/lm75.c
parent739cdbf1d8f0739b80035b80d69d871e33749b86 (diff)
parentcaf39e87cc1182f7dae84eefc43ca14d54c78ef9 (diff)
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'drivers/hwmon/lm75.c')
-rw-r--r--drivers/hwmon/lm75.c41
1 files changed, 23 insertions, 18 deletions
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 5be164ed278..9a3ebdf583f 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -23,17 +23,17 @@
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
-#include <linux/i2c-sensor.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
#include "lm75.h"
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c,
0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
-static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
/* Insmod parameters */
-SENSORS_INSMOD_1(lm75);
+I2C_CLIENT_INSMOD_1(lm75);
/* Many LM75 constants specified below */
@@ -46,6 +46,7 @@ SENSORS_INSMOD_1(lm75);
/* Each client has this additional data */
struct lm75_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 */
@@ -107,10 +108,10 @@ static int lm75_attach_adapter(struct i2c_adapter *adapter)
{
if (!(adapter->class & I2C_CLASS_HWMON))
return 0;
- return i2c_detect(adapter, &addr_data, lm75_detect);
+ return i2c_probe(adapter, &addr_data, lm75_detect);
}
-/* This function is called by i2c_detect */
+/* This function is called by i2c_probe */
static int lm75_detect(struct i2c_adapter *adapter, int address, int kind)
{
int i;
@@ -119,16 +120,6 @@ static int lm75_detect(struct i2c_adapter *adapter, int address, int kind)
int err = 0;
const char *name = "";
- /* Make sure we aren't probing the ISA bus!! This is just a safety check
- at this moment; i2c_detect really won't call us. */
-#ifdef DEBUG
- if (i2c_is_isa_adapter(adapter)) {
- dev_dbg(&adapter->dev,
- "lm75_detect called for an ISA bus adapter?!?\n");
- goto exit;
- }
-#endif
-
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_WORD_DATA))
goto exit;
@@ -208,12 +199,20 @@ static int lm75_detect(struct i2c_adapter *adapter, int address, int kind)
lm75_init_client(new_client);
/* 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 exit_detach;
+ }
+
device_create_file(&new_client->dev, &dev_attr_temp1_max);
device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
device_create_file(&new_client->dev, &dev_attr_temp1_input);
return 0;
+exit_detach:
+ i2c_detach_client(new_client);
exit_free:
kfree(data);
exit:
@@ -222,8 +221,10 @@ exit:
static int lm75_detach_client(struct i2c_client *client)
{
+ struct lm75_data *data = i2c_get_clientdata(client);
+ hwmon_device_unregister(data->class_dev);
i2c_detach_client(client);
- kfree(i2c_get_clientdata(client));
+ kfree(data);
return 0;
}
@@ -251,8 +252,12 @@ static int lm75_write_value(struct i2c_client *client, u8 reg, u16 value)
static void lm75_init_client(struct i2c_client *client)
{
- /* Initialize the LM75 chip */
- lm75_write_value(client, LM75_REG_CONF, 0);
+ int reg;
+
+ /* Enable if in shutdown mode */
+ reg = lm75_read_value(client, LM75_REG_CONF);
+ if (reg >= 0 && (reg & 0x01))
+ lm75_write_value(client, LM75_REG_CONF, reg & 0xfe);
}
static struct lm75_data *lm75_update_device(struct device *dev)