Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9ca8e40c8414d25e880b587cbd4d130750c49588
Commit: 9ca8e40c8414d25e880b587cbd4d130750c49588
Parent: 247dde4cdded4e4c332622b7c2860254e61cf5ce
Author: Jean Delvare <[EMAIL PROTECTED]>
AuthorDate: Tue May 8 17:22:01 2007 +0200
Committer: Jean Delvare <[EMAIL PROTECTED]>
CommitDate: Tue May 8 17:22:01 2007 +0200
hwmon/lm75: Use dynamic sysfs callbacks
This lets us get rid of macro-generated functions and shrinks the
driver size by about 8%.
Signed-off-by: Jean Delvare <[EMAIL PROTECTED]>
---
drivers/hwmon/lm75.c | 82 +++++++++++++++++++++++++++-----------------------
1 files changed, 44 insertions(+), 38 deletions(-)
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 7c65b8b..a40166f 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -24,6 +24,7 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include "lm75.h"
@@ -39,10 +40,12 @@ I2C_CLIENT_INSMOD_1(lm75);
/* Many LM75 constants specified below */
/* The LM75 registers */
-#define LM75_REG_TEMP 0x00
#define LM75_REG_CONF 0x01
-#define LM75_REG_TEMP_HYST 0x02
-#define LM75_REG_TEMP_OS 0x03
+static const u8 LM75_REG_TEMP[3] = {
+ 0x00, /* input */
+ 0x03, /* max */
+ 0x02, /* hyst */
+};
/* Each client has this additional data */
struct lm75_data {
@@ -51,9 +54,10 @@ struct lm75_data {
struct mutex update_lock;
char valid; /* !=0 if following fields are
valid */
unsigned long last_updated; /* In jiffies */
- u16 temp_input; /* Register values */
- u16 temp_max;
- u16 temp_hyst;
+ u16 temp[3]; /* Register values,
+ 0 = input
+ 1 = max
+ 2 = hyst */
};
static int lm75_attach_adapter(struct i2c_adapter *adapter);
@@ -75,35 +79,36 @@ static struct i2c_driver lm75_driver = {
.detach_client = lm75_detach_client,
};
-#define show(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr,
char *buf) \
-{ \
- struct lm75_data *data = lm75_update_device(dev); \
- return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->value)); \
+static ssize_t show_temp(struct device *dev, struct device_attribute *da,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct lm75_data *data = lm75_update_device(dev);
+ return sprintf(buf, "%d\n",
+ LM75_TEMP_FROM_REG(data->temp[attr->index]));
}
-show(temp_max);
-show(temp_hyst);
-show(temp_input);
-
-#define set(value, reg) \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count) \
-{ \
- struct i2c_client *client = to_i2c_client(dev); \
- struct lm75_data *data = i2c_get_clientdata(client); \
- int temp = simple_strtoul(buf, NULL, 10); \
- \
- mutex_lock(&data->update_lock); \
- data->value = LM75_TEMP_TO_REG(temp); \
- lm75_write_value(client, reg, data->value); \
- mutex_unlock(&data->update_lock);
\
- return count; \
+
+static ssize_t set_temp(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm75_data *data = i2c_get_clientdata(client);
+ int nr = attr->index;
+ unsigned long temp = simple_strtoul(buf, NULL, 10);
+
+ mutex_lock(&data->update_lock);
+ data->temp[nr] = LM75_TEMP_TO_REG(temp);
+ lm75_write_value(client, LM75_REG_TEMP[nr], data->temp[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
}
-set(temp_max, LM75_REG_TEMP_OS);
-set(temp_hyst, LM75_REG_TEMP_HYST);
-static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, set_temp_max);
-static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, show_temp_hyst,
set_temp_hyst);
-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
+ show_temp, set_temp, 1);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
+ show_temp, set_temp, 2);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
static int lm75_attach_adapter(struct i2c_adapter *adapter)
{
@@ -113,9 +118,9 @@ static int lm75_attach_adapter(struct i2c_adapter *adapter)
}
static struct attribute *lm75_attributes[] = {
- &dev_attr_temp1_input.attr,
- &dev_attr_temp1_max.attr,
- &dev_attr_temp1_max_hyst.attr,
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
NULL
};
@@ -283,11 +288,12 @@ static struct lm75_data *lm75_update_device(struct device
*dev)
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|| !data->valid) {
+ int i;
dev_dbg(&client->dev, "Starting lm75 update\n");
- data->temp_input = lm75_read_value(client, LM75_REG_TEMP);
- data->temp_max = lm75_read_value(client, LM75_REG_TEMP_OS);
- data->temp_hyst = lm75_read_value(client, LM75_REG_TEMP_HYST);
+ for (i = 0; i < ARRAY_SIZE(data->temp); i++)
+ data->temp[i] = lm75_read_value(client,
+ LM75_REG_TEMP[i]);
data->last_updated = jiffies;
data->valid = 1;
}
-
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