Greg KH
2005-06-22T07:18:41Z

[PATCH] I2C: lm83 uses new sysfs callbacks

I updated the lm83 hardware monitoring driver to take benefit of Yani
Ioannou's new sysfs callback capabilities.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
commit 1a86c05121a3f56b4b928ed43f9f8ffc1376d802
tree 5ae73589d53ccadec32b90305988828f530efc04
parent 30d7394b1a3df0e7cc145a543846109babd4d53b
author Jean Delvare <khali@linux-fr.org> Sun, 05 Jun 2005 21:16:39 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> Tue, 21 Jun 2005 21:52:04 -0700

drivers/i2c/chips/lm83.c | 157 +++++++++++++++++++++++-----------------------
1 files changed, 77 insertions(+), 80 deletions(-)

diff --git a/drivers/i2c/chips/lm83.c b/drivers/i2c/chips/lm83.c
--- a/drivers/i2c/chips/lm83.c
+++ b/drivers/i2c/chips/lm83.c
@@ -1,7 +1,7 @@
/*
* lm83.c - Part of lm_sensors, Linux kernel modules for hardware
* monitoring
- * Copyright (C) 2003 Jean Delvare <khali@linux-fr.org>
+ * Copyright (C) 2003-2005 Jean Delvare <khali@linux-fr.org>
*
* Heavily inspired from the lm78, lm75 and adm1021 drivers. The LM83 is
* a sensor chip made by National Semiconductor. It reports up to four
@@ -33,6 +33,7 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
+#include <linux/i2c-sysfs.h>

/*
* Addresses to scan
@@ -93,21 +94,20 @@ static const u8 LM83_REG_R_TEMP[] = {
LM83_REG_R_LOCAL_TEMP,
LM83_REG_R_REMOTE1_TEMP,
LM83_REG_R_REMOTE2_TEMP,
- LM83_REG_R_REMOTE3_TEMP
-};
-
-static const u8 LM83_REG_R_HIGH[] = {
+ LM83_REG_R_REMOTE3_TEMP,
LM83_REG_R_LOCAL_HIGH,
LM83_REG_R_REMOTE1_HIGH,
LM83_REG_R_REMOTE2_HIGH,
- LM83_REG_R_REMOTE3_HIGH
+ LM83_REG_R_REMOTE3_HIGH,
+ LM83_REG_R_TCRIT,
};

static const u8 LM83_REG_W_HIGH[] = {
LM83_REG_W_LOCAL_HIGH,
LM83_REG_W_REMOTE1_HIGH,
LM83_REG_W_REMOTE2_HIGH,
- LM83_REG_W_REMOTE3_HIGH
+ LM83_REG_W_REMOTE3_HIGH,
+ LM83_REG_W_TCRIT,
};

/*
@@ -143,9 +143,9 @@ struct lm83_data {
unsigned long last_updated; /* in jiffies */

/* registers values */
- s8 temp_input[4];
- s8 temp_high[4];
- s8 temp_crit;
+ s8 temp[9]; /* 0..3: input 1-4,
+ 4..7: high limit 1-4,
+ 8 : critical limit */
u16 alarms; /* bitvector, combined */
};

@@ -153,65 +153,55 @@ struct lm83_data {
* Sysfs stuff
*/

-#define show_temp(suffix, value) \
-static ssize_t show_temp_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct lm83_data *data = lm83_update_device(dev); \
- return sprintf(buf, "%d\n", TEMP_FROM_REG(data->value)); \
+static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm83_data *data = lm83_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
}
-show_temp(input1, temp_input[0]);
-show_temp(input2, temp_input[1]);
-show_temp(input3, temp_input[2]);
-show_temp(input4, temp_input[3]);
-show_temp(high1, temp_high[0]);
-show_temp(high2, temp_high[1]);
-show_temp(high3, temp_high[2]);
-show_temp(high4, temp_high[3]);
-show_temp(crit, temp_crit);
-
-#define set_temp(suffix, value, reg) \
-static ssize_t set_temp_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \
- size_t count) \
-{ \
- struct i2c_client *client = to_i2c_client(dev); \
- struct lm83_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
- down(&data->update_lock); \
- data->value = TEMP_TO_REG(val); \
- i2c_smbus_write_byte_data(client, reg, data->value); \
- up(&data->update_lock); \
- return count; \
+
+static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm83_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ int nr = attr->index;
+
+ down(&data->update_lock);
+ data->temp[nr] = TEMP_TO_REG(val);
+ i2c_smbus_write_byte_data(client, LM83_REG_W_HIGH[nr - 4],
+ data->temp[nr]);
+ up(&data->update_lock);
+ return count;
}
-set_temp(high1, temp_high[0], LM83_REG_W_LOCAL_HIGH);
-set_temp(high2, temp_high[1], LM83_REG_W_REMOTE1_HIGH);
-set_temp(high3, temp_high[2], LM83_REG_W_REMOTE2_HIGH);
-set_temp(high4, temp_high[3], LM83_REG_W_REMOTE3_HIGH);
-set_temp(crit, temp_crit, LM83_REG_W_TCRIT);

-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy,
+ char *buf)
{
struct lm83_data *data = lm83_update_device(dev);
return sprintf(buf, "%d\n", data->alarms);
}

-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
-static DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input2, NULL);
-static DEVICE_ATTR(temp3_input, S_IRUGO, show_temp_input3, NULL);
-static DEVICE_ATTR(temp4_input, S_IRUGO, show_temp_input4, NULL);
-static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_high1,
- set_temp_high1);
-static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_high2,
- set_temp_high2);
-static DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_high3,
- set_temp_high3);
-static DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_high4,
- set_temp_high4);
-static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL);
-static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL);
-static DEVICE_ATTR(temp3_crit, S_IWUSR | S_IRUGO, show_temp_crit,
- set_temp_crit);
-static DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp,
+ set_temp, 4);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp,
+ set_temp, 5);
+static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp,
+ set_temp, 6);
+static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp,
+ set_temp, 7);
+static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp, NULL, 8);
+static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp, NULL, 8);
+static SENSOR_DEVICE_ATTR(temp3_crit, S_IWUSR | S_IRUGO, show_temp,
+ set_temp, 8);
+static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp, NULL, 8);
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);

/*
@@ -322,18 +312,30 @@ static int lm83_detect(struct i2c_adapte
*/

/* Register sysfs hooks */
- device_create_file(&new_client->dev, &dev_attr_temp1_input);
- device_create_file(&new_client->dev, &dev_attr_temp2_input);
- device_create_file(&new_client->dev, &dev_attr_temp3_input);
- device_create_file(&new_client->dev, &dev_attr_temp4_input);
- device_create_file(&new_client->dev, &dev_attr_temp1_max);
- device_create_file(&new_client->dev, &dev_attr_temp2_max);
- device_create_file(&new_client->dev, &dev_attr_temp3_max);
- device_create_file(&new_client->dev, &dev_attr_temp4_max);
- device_create_file(&new_client->dev, &dev_attr_temp1_crit);
- device_create_file(&new_client->dev, &dev_attr_temp2_crit);
- device_create_file(&new_client->dev, &dev_attr_temp3_crit);
- device_create_file(&new_client->dev, &dev_attr_temp4_crit);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp3_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp4_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_max.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_max.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp3_max.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp4_max.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_crit.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_crit.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp3_crit.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp4_crit.dev_attr);
device_create_file(&new_client->dev, &dev_attr_alarms);

return 0;
@@ -369,16 +371,11 @@ static struct lm83_data *lm83_update_dev
int nr;

dev_dbg(&client->dev, "Updating lm83 data.\n");
- for (nr = 0; nr < 4 ; nr++) {
- data->temp_input[nr] =
+ for (nr = 0; nr < 9; nr++) {
+ data->temp[nr] =
i2c_smbus_read_byte_data(client,
LM83_REG_R_TEMP[nr]);
- data->temp_high[nr] =
- i2c_smbus_read_byte_data(client,
- LM83_REG_R_HIGH[nr]);
}
- data->temp_crit =
- i2c_smbus_read_byte_data(client, LM83_REG_R_TCRIT);
data->alarms =
i2c_smbus_read_byte_data(client, LM83_REG_R_STATUS1)
+ (i2c_smbus_read_byte_data(client, LM83_REG_R_STATUS2)