Greg KH
2005-06-22T07:13:54Z

[PATCH] I2C: lm90 uses new sysfs callbacks

I updated the lm90 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 30d7394b1a3df0e7cc145a543846109babd4d53b
tree e1118dba668df2123558a0a25913c4d4f460eae8
parent a0ef14837a2298a4748e2a3e8e206f086dd3b21a
author Jean Delvare <khali@linux-fr.org> Sun, 05 Jun 2005 21:27:28 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> Tue, 21 Jun 2005 21:52:03 -0700

drivers/i2c/chips/lm90.c | 270 ++++++++++++++++++++++++++--------------------
1 files changed, 150 insertions(+), 120 deletions(-)

diff --git a/drivers/i2c/chips/lm90.c b/drivers/i2c/chips/lm90.c
--- a/drivers/i2c/chips/lm90.c
+++ b/drivers/i2c/chips/lm90.c
@@ -1,7 +1,7 @@
/*
* lm90.c - Part of lm_sensors, Linux kernel modules for hardware
* monitoring
- * Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org>
+ * Copyright (C) 2003-2005 Jean Delvare <khali@linux-fr.org>
*
* Based on the lm83 driver. The LM90 is a sensor chip made by National
* Semiconductor. It reports up to two temperatures (its own plus up to
@@ -76,6 +76,7 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
+#include <linux/i2c-sysfs.h>

/*
* Addresses to scan
@@ -205,9 +206,14 @@ struct lm90_data {
int kind;

/* registers values */
- s8 temp_input1, temp_low1, temp_high1; /* local */
- s16 temp_input2, temp_low2, temp_high2; /* remote, combined */
- s8 temp_crit1, temp_crit2;
+ s8 temp8[5]; /* 0: local input
+ 1: local low limit
+ 2: local high limit
+ 3: local critical limit
+ 4: remote critical limit */
+ s16 temp11[3]; /* 0: remote input
+ 1: remote low limit
+ 2: remote high limit */
u8 temp_hyst;
u8 alarms; /* bitvector */
};
@@ -216,75 +222,88 @@ struct lm90_data {
* Sysfs stuff
*/

-#define show_temp(value, converter) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct lm90_data *data = lm90_update_device(dev); \
- return sprintf(buf, "%d\n", converter(data->value)); \
-}
-show_temp(temp_input1, TEMP1_FROM_REG);
-show_temp(temp_input2, TEMP2_FROM_REG);
-show_temp(temp_low1, TEMP1_FROM_REG);
-show_temp(temp_low2, TEMP2_FROM_REG);
-show_temp(temp_high1, TEMP1_FROM_REG);
-show_temp(temp_high2, TEMP2_FROM_REG);
-show_temp(temp_crit1, TEMP1_FROM_REG);
-show_temp(temp_crit2, TEMP1_FROM_REG);
-
-#define set_temp1(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 lm90_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
- down(&data->update_lock); \
- if (data->kind == adt7461) \
- data->value = TEMP1_TO_REG_ADT7461(val); \
- else \
- data->value = TEMP1_TO_REG(val); \
- i2c_smbus_write_byte_data(client, reg, data->value); \
- up(&data->update_lock); \
- return count; \
-}
-#define set_temp2(value, regh, regl) \
-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 lm90_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
- down(&data->update_lock); \
- if (data->kind == adt7461) \
- data->value = TEMP2_TO_REG_ADT7461(val); \
- else \
- data->value = TEMP2_TO_REG(val); \
- i2c_smbus_write_byte_data(client, regh, data->value >> 8); \
- i2c_smbus_write_byte_data(client, regl, data->value & 0xff); \
- up(&data->update_lock); \
- return count; \
-}
-set_temp1(temp_low1, LM90_REG_W_LOCAL_LOW);
-set_temp2(temp_low2, LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL);
-set_temp1(temp_high1, LM90_REG_W_LOCAL_HIGH);
-set_temp2(temp_high2, LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL);
-set_temp1(temp_crit1, LM90_REG_W_LOCAL_CRIT);
-set_temp1(temp_crit2, LM90_REG_W_REMOTE_CRIT);
-
-#define show_temp_hyst(value, basereg) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct lm90_data *data = lm90_update_device(dev); \
- return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->basereg) \
- - TEMP1_FROM_REG(data->temp_hyst)); \
+static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm90_data *data = lm90_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp8[attr->index]));
}
-show_temp_hyst(temp_hyst1, temp_crit1);
-show_temp_hyst(temp_hyst2, temp_crit2);

-static ssize_t set_temp_hyst1(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
+static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ static const u8 reg[4] = {
+ LM90_REG_W_LOCAL_LOW,
+ LM90_REG_W_LOCAL_HIGH,
+ LM90_REG_W_LOCAL_CRIT,
+ LM90_REG_W_REMOTE_CRIT,
+ };
+
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm90_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ int nr = attr->index;
+
+ down(&data->update_lock);
+ if (data->kind == adt7461)
+ data->temp8[nr] = TEMP1_TO_REG_ADT7461(val);
+ else
+ data->temp8[nr] = TEMP1_TO_REG(val);
+ i2c_smbus_write_byte_data(client, reg[nr - 1], data->temp8[nr]);
+ up(&data->update_lock);
+ return count;
+}
+
+static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm90_data *data = lm90_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP2_FROM_REG(data->temp11[attr->index]));
+}
+
+static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ static const u8 reg[4] = {
+ LM90_REG_W_REMOTE_LOWH,
+ LM90_REG_W_REMOTE_LOWL,
+ LM90_REG_W_REMOTE_HIGHH,
+ LM90_REG_W_REMOTE_HIGHL,
+ };
+
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm90_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ int nr = attr->index;
+
+ down(&data->update_lock);
+ if (data->kind == adt7461)
+ data->temp11[nr] = TEMP2_TO_REG_ADT7461(val);
+ else
+ data->temp11[nr] = TEMP2_TO_REG(val);
+ i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
+ data->temp11[nr] >> 8);
+ i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
+ data->temp11[nr] & 0xff);
+ up(&data->update_lock);
+ return count;
+}
+
+static ssize_t show_temphyst(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm90_data *data = lm90_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp8[attr->index])
+ - TEMP1_FROM_REG(data->temp_hyst));
+}
+
+static ssize_t set_temphyst(struct device *dev, struct device_attribute *dummy,
+ const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm90_data *data = i2c_get_clientdata(client);
@@ -292,36 +311,37 @@ static ssize_t set_temp_hyst1(struct dev
long hyst;

down(&data->update_lock);
- hyst = TEMP1_FROM_REG(data->temp_crit1) - val;
+ hyst = TEMP1_FROM_REG(data->temp8[3]) - val;
i2c_smbus_write_byte_data(client, LM90_REG_W_TCRIT_HYST,
HYST_TO_REG(hyst));
up(&data->update_lock);
return count;
}

-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 lm90_data *data = lm90_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(temp1_min, S_IWUSR | S_IRUGO, show_temp_low1,
- set_temp_low1);
-static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_low2,
- set_temp_low2);
-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(temp1_crit, S_IWUSR | S_IRUGO, show_temp_crit1,
- set_temp_crit1);
-static DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit2,
- set_temp_crit2);
-static DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_hyst1,
- set_temp_hyst1);
-static DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_hyst2, NULL);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 1);
+static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 1);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 2);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 2);
+static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 3);
+static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 4);
+static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst,
+ set_temphyst, 3);
+static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL, 4);
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);

/*
@@ -480,16 +500,26 @@ static int lm90_detect(struct i2c_adapte
lm90_init_client(new_client);

/* 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_temp1_min);
- device_create_file(&new_client->dev, &dev_attr_temp2_min);
- 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_temp1_crit);
- device_create_file(&new_client->dev, &dev_attr_temp2_crit);
- device_create_file(&new_client->dev, &dev_attr_temp1_crit_hyst);
- device_create_file(&new_client->dev, &dev_attr_temp2_crit_hyst);
+ 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_temp1_min.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_min.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_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_temp1_crit_hyst.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp2_crit_hyst.dev_attr);
device_create_file(&new_client->dev, &dev_attr_alarms);

return 0;
@@ -540,16 +570,16 @@ static struct lm90_data *lm90_update_dev
u8 oldh, newh;

dev_dbg(&client->dev, "Updating lm90 data.\n");
- data->temp_input1 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_LOCAL_TEMP);
- data->temp_high1 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_LOCAL_HIGH);
- data->temp_low1 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_LOCAL_LOW);
- data->temp_crit1 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_LOCAL_CRIT);
- data->temp_crit2 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_CRIT);
+ data->temp8[0] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_LOCAL_TEMP);
+ data->temp8[1] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_LOCAL_LOW);
+ data->temp8[2] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_LOCAL_HIGH);
+ data->temp8[3] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_LOCAL_CRIT);
+ data->temp8[4] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_CRIT);
data->temp_hyst = i2c_smbus_read_byte_data(client,
LM90_REG_R_TCRIT_HYST);

@@ -569,13 +599,13 @@ static struct lm90_data *lm90_update_dev
*/
oldh = i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_TEMPH);
- data->temp_input2 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_TEMPL);
+ data->temp11[0] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_TEMPL);
newh = i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_TEMPH);
if (newh != oldh) {
- data->temp_input2 = i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_TEMPL);
+ data->temp11[0] = i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_TEMPL);
#ifdef DEBUG
oldh = i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_TEMPH);
@@ -585,16 +615,16 @@ static struct lm90_data *lm90_update_dev
"wrong.\n");
#endif
}
- data->temp_input2 |= (newh << 8);
+ data->temp11[0] |= (newh << 8);

- data->temp_high2 = (i2c_smbus_read_byte_data(client,
+ data->temp11[1] = (i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_LOWH) << 8) +
+ i2c_smbus_read_byte_data(client,
+ LM90_REG_R_REMOTE_LOWL);
+ data->temp11[2] = (i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_HIGHH) << 8) +
i2c_smbus_read_byte_data(client,
LM90_REG_R_REMOTE_HIGHL);
- data->temp_low2 = (i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_LOWH) << 8) +
- i2c_smbus_read_byte_data(client,
- LM90_REG_R_REMOTE_LOWL);
data->alarms = i2c_smbus_read_byte_data(client,
LM90_REG_R_STATUS);