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Commit 30d7394b authored by Jean Delvare's avatar Jean Delvare Committed by Greg Kroah-Hartman
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[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: default avatarJean Delvare <khali@linux-fr.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent a0ef1483
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Showing with 147 additions and 117 deletions
drivers/i2c/chips/lm90.c
View file @ 30d7394b
/*
* 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)); \
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]));
}
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;
}
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; \
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]));
}
#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; \
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;
}
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_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));
}
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_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 device *dev, struct device_attribute *attr,
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_adapter *adapter, int address, int kind)
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_device(struct device *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_device(struct device *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_device(struct device *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);
......
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