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Commit bc51ae11 authored by Jean Delvare's avatar Jean Delvare Committed by Greg Kroah-Hartman
Browse files

[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: default avatarJean Delvare <khali@linux-fr.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 1a86c051

drivers/i2c/chips/lm63.c

+137 −120
Original line number Diff line number Diff line 
/*

 * lm63.c - driver for the National Semiconductor LM63 temperature sensor

 *          with integrated fan control

 * Copyright (C) 2004  Jean Delvare <khali@linux-fr.org>

 * Copyright (C) 2004-2005  Jean Delvare <khali@linux-fr.org>

 * 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 *dev, struct device_attribute *attr, char 
		       (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 *dev, struct device_attribute *attr, const 
	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)); \

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]));

}

#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)); \



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;

}

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; \



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]));

}

#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; \



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;

}

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);



/* 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(struct device *dev, struct device_attribute * 
	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 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 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(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_adapter *adapter, int address, int kind) 


	/* 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);
@@ -510,11 +527,11 @@ static struct lm63_data *lm63_update_device(struct device *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,

			data->fan[0] = i2c_smbus_read_byte_data(client,

				       LM63_REG_TACH_COUNT_LSB) & 0xFC;

			data->fan1_input |= i2c_smbus_read_byte_data(client,

			data->fan[0] |= i2c_smbus_read_byte_data(client,

					LM63_REG_TACH_COUNT_MSB) << 8;

			data->fan1_low = (i2c_smbus_read_byte_data(client,

			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);
@@ -527,25 +544,25 @@ static struct lm63_data *lm63_update_device(struct device *dev) 
		data->pwm1_value = i2c_smbus_read_byte_data(client,

				   LM63_REG_PWM_VALUE);



		data->temp1_input = i2c_smbus_read_byte_data(client,

		data->temp8[0] = i2c_smbus_read_byte_data(client,

				 LM63_REG_LOCAL_TEMP);

		data->temp1_high = i2c_smbus_read_byte_data(client,

		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,

		data->temp11[0] = i2c_smbus_read_byte_data(client,

				  LM63_REG_REMOTE_TEMP_MSB) << 8;

		data->temp2_input |= i2c_smbus_read_byte_data(client,

		data->temp11[0] |= 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[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,

		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);