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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

drivers/i2c/chips/lm90.c

+147 −117
Original line number Diff line number Diff line 
/*

 * 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]));

}

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 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;

}

#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 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]));

}

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 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;

}

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 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 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;
@@ -540,15 +570,15 @@ 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,

		data->temp8[0] = 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,

		data->temp8[1] = i2c_smbus_read_byte_data(client,

				 LM90_REG_R_LOCAL_LOW);

		data->temp_crit1 = i2c_smbus_read_byte_data(client,

		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->temp_crit2 = i2c_smbus_read_byte_data(client,

		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);
@@ -569,12 +599,12 @@ 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,

		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,

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

					  LM90_REG_R_REMOTE_TEMPL);

#ifdef DEBUG

			oldh = i2c_smbus_read_byte_data(client,
@@ -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,

				   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,

		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->alarms = i2c_smbus_read_byte_data(client,

			       LM90_REG_R_STATUS);