[PATCH] I2C: lm63 uses new sysfs callbacks

From: Greg KH
Date: Wed Jun 22 2005 - 02:27:43 EST

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[PATCH] I2C: lm63 uses new sysfs callbacks

I updated the lm63 hardware monitoring driver to take benefit of Yani
Ioannou's new sysfs callback capabilities.

Signed-off-by: Jean Delvare <khali@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
commit bc51ae1159c0c9a34d2400a8449e1fca3ee965b4
tree a7bef5ee693b9b35a34ccf8361caab7578254c30
parent 1a86c05121a3f56b4b928ed43f9f8ffc1376d802
author Jean Delvare <khali@xxxxxxxxxxxx> Sun, 05 Jun 2005 20:32:27 +0200
committer Greg Kroah-Hartman <gregkh@xxxxxxx> Tue, 21 Jun 2005 21:52:04 -0700

drivers/i2c/chips/lm63.c | 267 ++++++++++++++++++++++++----------------------
1 files changed, 142 insertions(+), 125 deletions(-)

diff --git a/drivers/i2c/chips/lm63.c b/drivers/i2c/chips/lm63.c
--- a/drivers/i2c/chips/lm63.c
+++ b/drivers/i2c/chips/lm63.c
@@ -1,7 +1,7 @@
/*
* lm63.c - driver for the National Semiconductor LM63 temperature sensor
* with integrated fan control
- * Copyright (C) 2004 Jean Delvare <khali@xxxxxxxxxxxx>
+ * Copyright (C) 2004-2005 Jean Delvare <khali@xxxxxxxxxxxx>
* Based on the lm90 driver.
*
* The LM63 is a sensor chip made by National Semiconductor. It measures
@@ -43,6 +43,7 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
+#include <linux/i2c-sysfs.h>

/*
* Addresses to scan
@@ -157,16 +158,16 @@ struct lm63_data {

/* registers values */
u8 config, config_fan;
- u16 fan1_input;
- u16 fan1_low;
+ u16 fan[2]; /* 0: input
+ 1: low limit */
u8 pwm1_freq;
u8 pwm1_value;
- s8 temp1_input;
- s8 temp1_high;
- s16 temp2_input;
- s16 temp2_high;
- s16 temp2_low;
- s8 temp2_crit;
+ s8 temp8[3]; /* 0: local input
+ 1: local high limit
+ 2: remote critical limit */
+ s16 temp11[3]; /* 0: remote input
+ 1: remote low limit
+ 2: remote high limit */
u8 temp2_crit_hyst;
u8 alarms;
};
@@ -175,33 +176,33 @@ struct lm63_data {
* Sysfs callback functions and files
*/

-#define show_fan(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct lm63_data *data = lm63_update_device(dev); \
- return sprintf(buf, "%d\n", FAN_FROM_REG(data->value)); \
+static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index]));
}
-show_fan(fan1_input);
-show_fan(fan1_low);

-static ssize_t set_fan1_low(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
+static ssize_t set_fan(struct device *dev, struct device_attribute *dummy,
+ const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm63_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);

down(&data->update_lock);
- data->fan1_low = FAN_TO_REG(val);
+ data->fan[1] = FAN_TO_REG(val);
i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB,
- data->fan1_low & 0xFF);
+ data->fan[1] & 0xFF);
i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB,
- data->fan1_low >> 8);
+ data->fan[1] >> 8);
up(&data->update_lock);
return count;
}

-static ssize_t show_pwm1(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy,
+ char *buf)
{
struct lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%d\n", data->pwm1_value >= 2 * data->pwm1_freq ?
@@ -209,7 +210,8 @@ static ssize_t show_pwm1(struct device *
(2 * data->pwm1_freq));
}

-static ssize_t set_pwm1(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy,
+ const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm63_data *data = i2c_get_clientdata(client);
@@ -228,77 +230,83 @@ static ssize_t set_pwm1(struct device *d
return count;
}

-static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *dummy,
+ char *buf)
{
struct lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2);
}

-#define show_temp8(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct lm63_data *data = lm63_update_device(dev); \
- return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->value)); \
-}
-#define show_temp11(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct lm63_data *data = lm63_update_device(dev); \
- return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->value)); \
-}
-show_temp8(temp1_input);
-show_temp8(temp1_high);
-show_temp11(temp2_input);
-show_temp11(temp2_high);
-show_temp11(temp2_low);
-show_temp8(temp2_crit);
-
-#define set_temp8(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 lm63_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
- down(&data->update_lock); \
- data->value = TEMP8_TO_REG(val); \
- i2c_smbus_write_byte_data(client, reg, data->value); \
- up(&data->update_lock); \
- return count; \
-}
-#define set_temp11(value, reg_msb, reg_lsb) \
-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 lm63_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
- down(&data->update_lock); \
- data->value = TEMP11_TO_REG(val); \
- i2c_smbus_write_byte_data(client, reg_msb, data->value >> 8); \
- i2c_smbus_write_byte_data(client, reg_lsb, data->value & 0xff); \
- up(&data->update_lock); \
- return count; \
-}
-set_temp8(temp1_high, LM63_REG_LOCAL_HIGH);
-set_temp11(temp2_high, LM63_REG_REMOTE_HIGH_MSB, LM63_REG_REMOTE_HIGH_LSB);
-set_temp11(temp2_low, LM63_REG_REMOTE_LOW_MSB, LM63_REG_REMOTE_LOW_LSB);
+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 lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index]));
+}
+
+static ssize_t set_temp8(struct device *dev, struct device_attribute *dummy,
+ const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm63_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->temp8[1] = TEMP8_TO_REG(val);
+ i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]);
+ 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 lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP11_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] = {
+ LM63_REG_REMOTE_LOW_MSB,
+ LM63_REG_REMOTE_LOW_LSB,
+ LM63_REG_REMOTE_HIGH_MSB,
+ LM63_REG_REMOTE_HIGH_LSB,
+ };
+
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct lm63_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+ int nr = attr->index;
+
+ down(&data->update_lock);
+ data->temp11[nr] = TEMP11_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;
+}

/* Hysteresis register holds a relative value, while we want to present
an absolute to user-space */
-static ssize_t show_temp2_crit_hyst(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy,
+ char *buf)
{
struct lm63_data *data = lm63_update_device(dev);
- return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp2_crit)
+ return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[2])
- TEMP8_FROM_REG(data->temp2_crit_hyst));
}

/* And now the other way around, user-space provides an absolute
hysteresis value and we have to store a relative one */
-static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
+static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy,
+ const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm63_data *data = i2c_get_clientdata(client);
@@ -306,36 +314,37 @@ static ssize_t set_temp2_crit_hyst(struc
long hyst;

down(&data->update_lock);
- hyst = TEMP8_FROM_REG(data->temp2_crit) - val;
+ hyst = TEMP8_FROM_REG(data->temp8[2]) - val;
i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_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 lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%u\n", data->alarms);
}

-static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan1_input, NULL);
-static DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan1_low,
- set_fan1_low);
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan,
+ set_fan, 1);

static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1);
static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL);

-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1_input, NULL);
-static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp1_high,
- set_temp1_high);
-
-static DEVICE_ATTR(temp2_input, S_IRUGO, show_temp2_input, NULL);
-static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp2_low,
- set_temp2_low);
-static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp2_high,
- set_temp2_high);
-static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp2_crit, NULL);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8,
+ set_temp8, 1);
+
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 1);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 2);
+static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp8, NULL, 2);
static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst,
set_temp2_crit_hyst);

@@ -429,17 +438,25 @@ static int lm63_detect(struct i2c_adapte

/* Register sysfs hooks */
if (data->config & 0x04) { /* tachometer enabled */
- device_create_file(&new_client->dev, &dev_attr_fan1_input);
- device_create_file(&new_client->dev, &dev_attr_fan1_min);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan1_input.dev_attr);
+ device_create_file(&new_client->dev,
+ &sensor_dev_attr_fan1_min.dev_attr);
}
device_create_file(&new_client->dev, &dev_attr_pwm1);
device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
- 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_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_temp2_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_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_temp2_crit.dev_attr);
device_create_file(&new_client->dev, &dev_attr_temp2_crit_hyst);
device_create_file(&new_client->dev, &dev_attr_alarms);

@@ -510,14 +527,14 @@ static struct lm63_data *lm63_update_dev
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
if (data->config & 0x04) { /* tachometer enabled */
/* order matters for fan1_input */
- data->fan1_input = i2c_smbus_read_byte_data(client,
- LM63_REG_TACH_COUNT_LSB) & 0xFC;
- data->fan1_input |= i2c_smbus_read_byte_data(client,
- LM63_REG_TACH_COUNT_MSB) << 8;
- data->fan1_low = (i2c_smbus_read_byte_data(client,
- LM63_REG_TACH_LIMIT_LSB) & 0xFC)
- | (i2c_smbus_read_byte_data(client,
- LM63_REG_TACH_LIMIT_MSB) << 8);
+ data->fan[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_COUNT_LSB) & 0xFC;
+ data->fan[0] |= i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_COUNT_MSB) << 8;
+ data->fan[1] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_LIMIT_LSB) & 0xFC)
+ | (i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_LIMIT_MSB) << 8);
}

data->pwm1_freq = i2c_smbus_read_byte_data(client,
@@ -527,26 +544,26 @@ static struct lm63_data *lm63_update_dev
data->pwm1_value = i2c_smbus_read_byte_data(client,
LM63_REG_PWM_VALUE);

- data->temp1_input = i2c_smbus_read_byte_data(client,
- LM63_REG_LOCAL_TEMP);
- data->temp1_high = i2c_smbus_read_byte_data(client,
- LM63_REG_LOCAL_HIGH);
+ data->temp8[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LOCAL_TEMP);
+ data->temp8[1] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LOCAL_HIGH);

/* order matters for temp2_input */
- data->temp2_input = i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_TEMP_MSB) << 8;
- data->temp2_input |= i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_TEMP_LSB);
- data->temp2_high = (i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_HIGH_MSB) << 8)
- | i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_HIGH_LSB);
- data->temp2_low = (i2c_smbus_read_byte_data(client,
+ data->temp11[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TEMP_MSB) << 8;
+ data->temp11[0] |= i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TEMP_LSB);
+ data->temp11[1] = (i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_LOW_MSB) << 8)
| i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_LOW_LSB);
- data->temp2_crit = i2c_smbus_read_byte_data(client,
- LM63_REG_REMOTE_TCRIT);
+ data->temp11[2] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_HIGH_MSB) << 8)
+ | i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_HIGH_LSB);
+ data->temp8[2] = i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TCRIT);
data->temp2_crit_hyst = i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_TCRIT_HYST);

-
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Next message: Greg KH: "[PATCH] ds1337: export ds1337_do_command"
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