[PATCH] I2C: Move hwmon drivers (2/3)

Part 2: Move the driver files themselves.

Note that the patch "adds trailing whitespace", because it does move the
files as-is, and some files happen to have trailing whitespace.

From: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 795 insertions, 0 deletions

diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c
new file mode 100644
index 00000000000..29241469dcb
--- /dev/null
+++ b/drivers/hwmon/lm78.c
@@ -0,0 +1,795 @@
+/*
+    lm78.c - Part of lm_sensors, Linux kernel modules for hardware
+             monitoring
+    Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl> 
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/i2c-sensor.h>
+#include <asm/io.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x20, 0x21, 0x22, 0x23, 0x24,
+					0x25, 0x26, 0x27, 0x28, 0x29,
+					0x2a, 0x2b, 0x2c, 0x2d, 0x2e,
+					0x2f, I2C_CLIENT_END };
+static unsigned int normal_isa[] = { 0x0290, I2C_CLIENT_ISA_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_3(lm78, lm78j, lm79);
+
+/* Many LM78 constants specified below */
+
+/* Length of ISA address segment */
+#define LM78_EXTENT 8
+
+/* Where are the ISA address/data registers relative to the base address */
+#define LM78_ADDR_REG_OFFSET 5
+#define LM78_DATA_REG_OFFSET 6
+
+/* The LM78 registers */
+#define LM78_REG_IN_MAX(nr) (0x2b + (nr) * 2)
+#define LM78_REG_IN_MIN(nr) (0x2c + (nr) * 2)
+#define LM78_REG_IN(nr) (0x20 + (nr))
+
+#define LM78_REG_FAN_MIN(nr) (0x3b + (nr))
+#define LM78_REG_FAN(nr) (0x28 + (nr))
+
+#define LM78_REG_TEMP 0x27
+#define LM78_REG_TEMP_OVER 0x39
+#define LM78_REG_TEMP_HYST 0x3a
+
+#define LM78_REG_ALARM1 0x41
+#define LM78_REG_ALARM2 0x42
+
+#define LM78_REG_VID_FANDIV 0x47
+
+#define LM78_REG_CONFIG 0x40
+#define LM78_REG_CHIPID 0x49
+#define LM78_REG_I2C_ADDR 0x48
+
+
+/* Conversions. Rounding and limit checking is only done on the TO_REG 
+   variants. */
+
+/* IN: mV, (0V to 4.08V)
+   REG: 16mV/bit */
+static inline u8 IN_TO_REG(unsigned long val)
+{
+	unsigned long nval = SENSORS_LIMIT(val, 0, 4080);
+	return (nval + 8) / 16;
+}
+#define IN_FROM_REG(val) ((val) *  16)
+
+static inline u8 FAN_TO_REG(long rpm, int div)
+{
+	if (rpm <= 0)
+		return 255;
+	return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
+}
+
+static inline int FAN_FROM_REG(u8 val, int div)
+{
+	return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div);
+}
+
+/* TEMP: mC (-128C to +127C)
+   REG: 1C/bit, two's complement */
+static inline s8 TEMP_TO_REG(int val)
+{
+	int nval = SENSORS_LIMIT(val, -128000, 127000) ;
+	return nval<0 ? (nval-500)/1000 : (nval+500)/1000;
+}
+
+static inline int TEMP_FROM_REG(s8 val)
+{
+	return val * 1000;
+}
+
+/* VID: mV
+   REG: (see doc/vid) */
+static inline int VID_FROM_REG(u8 val)
+{
+	return val==0x1f ? 0 : val>=0x10 ? 5100-val*100 : 2050-val*50;
+}
+
+#define DIV_FROM_REG(val) (1 << (val))
+
+/* There are some complications in a module like this. First off, LM78 chips
+   may be both present on the SMBus and the ISA bus, and we have to handle
+   those cases separately at some places. Second, there might be several
+   LM78 chips available (well, actually, that is probably never done; but
+   it is a clean illustration of how to handle a case like that). Finally,
+   a specific chip may be attached to *both* ISA and SMBus, and we would
+   not like to detect it double. Fortunately, in the case of the LM78 at
+   least, a register tells us what SMBus address we are on, so that helps
+   a bit - except if there could be more than one SMBus. Groan. No solution
+   for this yet. */
+
+/* This module may seem overly long and complicated. In fact, it is not so
+   bad. Quite a lot of bookkeeping is done. A real driver can often cut
+   some corners. */
+
+/* For each registered LM78, we need to keep some data in memory. That
+   data is pointed to by lm78_list[NR]->data. The structure itself is
+   dynamically allocated, at the same time when a new lm78 client is
+   allocated. */
+struct lm78_data {
+	struct i2c_client client;
+	struct semaphore lock;
+	enum chips type;
+
+	struct semaphore update_lock;
+	char valid;		/* !=0 if following fields are valid */
+	unsigned long last_updated;	/* In jiffies */
+
+	u8 in[7];		/* Register value */
+	u8 in_max[7];		/* Register value */
+	u8 in_min[7];		/* Register value */
+	u8 fan[3];		/* Register value */
+	u8 fan_min[3];		/* Register value */
+	s8 temp;		/* Register value */
+	s8 temp_over;		/* Register value */
+	s8 temp_hyst;		/* Register value */
+	u8 fan_div[3];		/* Register encoding, shifted right */
+	u8 vid;			/* Register encoding, combined */
+	u16 alarms;		/* Register encoding, combined */
+};
+
+
+static int lm78_attach_adapter(struct i2c_adapter *adapter);
+static int lm78_detect(struct i2c_adapter *adapter, int address, int kind);
+static int lm78_detach_client(struct i2c_client *client);
+
+static int lm78_read_value(struct i2c_client *client, u8 register);
+static int lm78_write_value(struct i2c_client *client, u8 register, u8 value);
+static struct lm78_data *lm78_update_device(struct device *dev);
+static void lm78_init_client(struct i2c_client *client);
+
+
+static struct i2c_driver lm78_driver = {
+	.owner		= THIS_MODULE,
+	.name		= "lm78",
+	.id		= I2C_DRIVERID_LM78,
+	.flags		= I2C_DF_NOTIFY,
+	.attach_adapter	= lm78_attach_adapter,
+	.detach_client	= lm78_detach_client,
+};
+
+/* 7 Voltages */
+static ssize_t show_in(struct device *dev, char *buf, int nr)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
+}
+
+static ssize_t show_in_min(struct device *dev, char *buf, int nr)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
+}
+
+static ssize_t show_in_max(struct device *dev, char *buf, int nr)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
+}
+
+static ssize_t set_in_min(struct device *dev, const char *buf,
+		size_t count, int nr)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm78_data *data = i2c_get_clientdata(client);
+	unsigned long val = simple_strtoul(buf, NULL, 10);
+
+	down(&data->update_lock);
+	data->in_min[nr] = IN_TO_REG(val);
+	lm78_write_value(client, LM78_REG_IN_MIN(nr), data->in_min[nr]);
+	up(&data->update_lock);
+	return count;
+}
+
+static ssize_t set_in_max(struct device *dev, const char *buf,
+		size_t count, int nr)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm78_data *data = i2c_get_clientdata(client);
+	unsigned long val = simple_strtoul(buf, NULL, 10);
+
+	down(&data->update_lock);
+	data->in_max[nr] = IN_TO_REG(val);
+	lm78_write_value(client, LM78_REG_IN_MAX(nr), data->in_max[nr]);
+	up(&data->update_lock);
+	return count;
+}
+	
+#define show_in_offset(offset)					\
+static ssize_t							\
+	show_in##offset (struct device *dev, struct device_attribute *attr, char *buf)		\
+{								\
+	return show_in(dev, buf, offset);			\
+}								\
+static DEVICE_ATTR(in##offset##_input, S_IRUGO, 		\
+		show_in##offset, NULL);				\
+static ssize_t							\
+	show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf)   \
+{								\
+	return show_in_min(dev, buf, offset);			\
+}								\
+static ssize_t							\
+	show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf)   \
+{								\
+	return show_in_max(dev, buf, offset);			\
+}								\
+static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr,	\
+		const char *buf, size_t count)			\
+{								\
+	return set_in_min(dev, buf, count, offset);		\
+}								\
+static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr,	\
+		const char *buf, size_t count)			\
+{								\
+	return set_in_max(dev, buf, count, offset);		\
+}								\
+static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,		\
+		show_in##offset##_min, set_in##offset##_min);	\
+static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,		\
+		show_in##offset##_max, set_in##offset##_max);
+
+show_in_offset(0);
+show_in_offset(1);
+show_in_offset(2);
+show_in_offset(3);
+show_in_offset(4);
+show_in_offset(5);
+show_in_offset(6);
+
+/* Temperature */
+static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
+}
+
+static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
+}
+
+static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm78_data *data = i2c_get_clientdata(client);
+	long val = simple_strtol(buf, NULL, 10);
+
+	down(&data->update_lock);
+	data->temp_over = TEMP_TO_REG(val);
+	lm78_write_value(client, LM78_REG_TEMP_OVER, data->temp_over);
+	up(&data->update_lock);
+	return count;
+}
+
+static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
+}
+
+static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm78_data *data = i2c_get_clientdata(client);
+	long val = simple_strtol(buf, NULL, 10);
+
+	down(&data->update_lock);
+	data->temp_hyst = TEMP_TO_REG(val);
+	lm78_write_value(client, LM78_REG_TEMP_HYST, data->temp_hyst);
+	up(&data->update_lock);
+	return count;
+}
+
+static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
+static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
+		show_temp_over, set_temp_over);
+static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
+		show_temp_hyst, set_temp_hyst);
+
+/* 3 Fans */
+static ssize_t show_fan(struct device *dev, char *buf, int nr)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
+		DIV_FROM_REG(data->fan_div[nr])) );
+}
+
+static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr],
+		DIV_FROM_REG(data->fan_div[nr])) );
+}
+
+static ssize_t set_fan_min(struct device *dev, const char *buf,
+		size_t count, int nr)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm78_data *data = i2c_get_clientdata(client);
+	unsigned long val = simple_strtoul(buf, NULL, 10);
+
+	down(&data->update_lock);
+	data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
+	lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
+	up(&data->update_lock);
+	return count;
+}
+
+static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
+}
+
+/* Note: we save and restore the fan minimum here, because its value is
+   determined in part by the fan divisor.  This follows the principle of
+   least suprise; the user doesn't expect the fan minimum to change just
+   because the divisor changed. */
+static ssize_t set_fan_div(struct device *dev, const char *buf,
+	size_t count, int nr)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm78_data *data = i2c_get_clientdata(client);
+	unsigned long val = simple_strtoul(buf, NULL, 10);
+	unsigned long min;
+	u8 reg;
+
+	down(&data->update_lock);
+	min = FAN_FROM_REG(data->fan_min[nr],
+			   DIV_FROM_REG(data->fan_div[nr]));
+
+	switch (val) {
+	case 1: data->fan_div[nr] = 0; break;
+	case 2: data->fan_div[nr] = 1; break;
+	case 4: data->fan_div[nr] = 2; break;
+	case 8: data->fan_div[nr] = 3; break;
+	default:
+		dev_err(&client->dev, "fan_div value %ld not "
+			"supported. Choose one of 1, 2, 4 or 8!\n", val);
+		up(&data->update_lock);
+		return -EINVAL;
+	}
+
+	reg = lm78_read_value(client, LM78_REG_VID_FANDIV);
+	switch (nr) {
+	case 0:
+		reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
+		break;
+	case 1:
+		reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
+		break;
+	}
+	lm78_write_value(client, LM78_REG_VID_FANDIV, reg);
+
+	data->fan_min[nr] =
+		FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
+	lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
+	up(&data->update_lock);
+
+	return count;
+}
+
+#define show_fan_offset(offset)						\
+static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf)	\
+{									\
+	return show_fan(dev, buf, offset - 1);				\
+}									\
+static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf)  \
+{									\
+	return show_fan_min(dev, buf, offset - 1);			\
+}									\
+static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf)  \
+{									\
+	return show_fan_div(dev, buf, offset - 1);			\
+}									\
+static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr,		\
+		const char *buf, size_t count)				\
+{									\
+	return set_fan_min(dev, buf, count, offset - 1);		\
+}									\
+static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\
+static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,		\
+		show_fan_##offset##_min, set_fan_##offset##_min);
+
+static ssize_t set_fan_1_div(struct device *dev, struct device_attribute *attr, const char *buf,
+		size_t count)
+{
+	return set_fan_div(dev, buf, count, 0) ;
+}
+
+static ssize_t set_fan_2_div(struct device *dev, struct device_attribute *attr, const char *buf,
+		size_t count)
+{
+	return set_fan_div(dev, buf, count, 1) ;
+}
+
+show_fan_offset(1);
+show_fan_offset(2);
+show_fan_offset(3);
+
+/* Fan 3 divisor is locked in H/W */
+static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
+		show_fan_1_div, set_fan_1_div);
+static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
+		show_fan_2_div, set_fan_2_div);
+static DEVICE_ATTR(fan3_div, S_IRUGO, show_fan_3_div, NULL);
+
+/* VID */
+static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%d\n", VID_FROM_REG(data->vid));
+}
+static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
+
+/* Alarms */
+static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct lm78_data *data = lm78_update_device(dev);
+	return sprintf(buf, "%u\n", data->alarms);
+}
+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+
+/* This function is called when:
+     * lm78_driver is inserted (when this module is loaded), for each
+       available adapter
+     * when a new adapter is inserted (and lm78_driver is still present) */
+static int lm78_attach_adapter(struct i2c_adapter *adapter)
+{
+	if (!(adapter->class & I2C_CLASS_HWMON))
+		return 0;
+	return i2c_detect(adapter, &addr_data, lm78_detect);
+}
+
+/* This function is called by i2c_detect */
+int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+	int i, err;
+	struct i2c_client *new_client;
+	struct lm78_data *data;
+	const char *client_name = "";
+	int is_isa = i2c_is_isa_adapter(adapter);
+
+	if (!is_isa &&
+	    !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+		err = -ENODEV;
+		goto ERROR0;
+	}
+
+	/* Reserve the ISA region */
+	if (is_isa)
+		if (!request_region(address, LM78_EXTENT, lm78_driver.name)) {
+			err = -EBUSY;
+			goto ERROR0;
+		}
+
+	/* Probe whether there is anything available on this address. Already
+	   done for SMBus clients */
+	if (kind < 0) {
+		if (is_isa) {
+
+#define REALLY_SLOW_IO
+			/* We need the timeouts for at least some LM78-like
+			   chips. But only if we read 'undefined' registers. */
+			i = inb_p(address + 1);
+			if (inb_p(address + 2) != i) {
+				err = -ENODEV;
+				goto ERROR1;
+			}
+			if (inb_p(address + 3) != i) {
+				err = -ENODEV;
+				goto ERROR1;
+			}
+			if (inb_p(address + 7) != i) {
+				err = -ENODEV;
+				goto ERROR1;
+			}
+#undef REALLY_SLOW_IO
+
+			/* Let's just hope nothing breaks here */
+			i = inb_p(address + 5) & 0x7f;
+			outb_p(~i & 0x7f, address + 5);
+			if ((inb_p(address + 5) & 0x7f) != (~i & 0x7f)) {
+				outb_p(i, address + 5);
+				err = -ENODEV;
+				goto ERROR1;
+			}
+		}
+	}
+
+	/* OK. For now, we presume we have a valid client. We now create the
+	   client structure, even though we cannot fill it completely yet.
+	   But it allows us to access lm78_{read,write}_value. */
+
+	if (!(data = kmalloc(sizeof(struct lm78_data), GFP_KERNEL))) {
+		err = -ENOMEM;
+		goto ERROR1;
+	}
+	memset(data, 0, sizeof(struct lm78_data));
+
+	new_client = &data->client;
+	if (is_isa)
+		init_MUTEX(&data->lock);
+	i2c_set_clientdata(new_client, data);
+	new_client->addr = address;
+	new_client->adapter = adapter;
+	new_client->driver = &lm78_driver;
+	new_client->flags = 0;
+
+	/* Now, we do the remaining detection. */
+	if (kind < 0) {
+		if (lm78_read_value(new_client, LM78_REG_CONFIG) & 0x80) {
+			err = -ENODEV;
+			goto ERROR2;
+		}
+		if (!is_isa && (lm78_read_value(
+				new_client, LM78_REG_I2C_ADDR) != address)) {
+			err = -ENODEV;
+			goto ERROR2;
+		}
+	}
+
+	/* Determine the chip type. */
+	if (kind <= 0) {
+		i = lm78_read_value(new_client, LM78_REG_CHIPID);
+		if (i == 0x00 || i == 0x20)
+			kind = lm78;
+		else if (i == 0x40)
+			kind = lm78j;
+		else if ((i & 0xfe) == 0xc0)
+			kind = lm79;
+		else {
+			if (kind == 0)
+				dev_warn(&adapter->dev, "Ignoring 'force' "
+					"parameter for unknown chip at "
+					"adapter %d, address 0x%02x\n",
+					i2c_adapter_id(adapter), address);
+			err = -ENODEV;
+			goto ERROR2;
+		}
+	}
+
+	if (kind == lm78) {
+		client_name = "lm78";
+	} else if (kind == lm78j) {
+		client_name = "lm78-j";
+	} else if (kind == lm79) {
+		client_name = "lm79";
+	}
+
+	/* Fill in the remaining client fields and put into the global list */
+	strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
+	data->type = kind;
+
+	data->valid = 0;
+	init_MUTEX(&data->update_lock);
+
+	/* Tell the I2C layer a new client has arrived */
+	if ((err = i2c_attach_client(new_client)))
+		goto ERROR2;
+
+	/* Initialize the LM78 chip */
+	lm78_init_client(new_client);
+
+	/* A few vars need to be filled upon startup */
+	for (i = 0; i < 3; i++) {
+		data->fan_min[i] = lm78_read_value(new_client,
+					LM78_REG_FAN_MIN(i));
+	}
+
+	/* Register sysfs hooks */
+	device_create_file(&new_client->dev, &dev_attr_in0_input);
+	device_create_file(&new_client->dev, &dev_attr_in0_min);
+	device_create_file(&new_client->dev, &dev_attr_in0_max);
+	device_create_file(&new_client->dev, &dev_attr_in1_input);
+	device_create_file(&new_client->dev, &dev_attr_in1_min);
+	device_create_file(&new_client->dev, &dev_attr_in1_max);
+	device_create_file(&new_client->dev, &dev_attr_in2_input);
+	device_create_file(&new_client->dev, &dev_attr_in2_min);
+	device_create_file(&new_client->dev, &dev_attr_in2_max);
+	device_create_file(&new_client->dev, &dev_attr_in3_input);
+	device_create_file(&new_client->dev, &dev_attr_in3_min);
+	device_create_file(&new_client->dev, &dev_attr_in3_max);
+	device_create_file(&new_client->dev, &dev_attr_in4_input);
+	device_create_file(&new_client->dev, &dev_attr_in4_min);
+	device_create_file(&new_client->dev, &dev_attr_in4_max);
+	device_create_file(&new_client->dev, &dev_attr_in5_input);
+	device_create_file(&new_client->dev, &dev_attr_in5_min);
+	device_create_file(&new_client->dev, &dev_attr_in5_max);
+	device_create_file(&new_client->dev, &dev_attr_in6_input);
+	device_create_file(&new_client->dev, &dev_attr_in6_min);
+	device_create_file(&new_client->dev, &dev_attr_in6_max);
+	device_create_file(&new_client->dev, &dev_attr_temp1_input);
+	device_create_file(&new_client->dev, &dev_attr_temp1_max);
+	device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
+	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, &dev_attr_fan1_div);
+	device_create_file(&new_client->dev, &dev_attr_fan2_input);
+	device_create_file(&new_client->dev, &dev_attr_fan2_min);
+	device_create_file(&new_client->dev, &dev_attr_fan2_div);
+	device_create_file(&new_client->dev, &dev_attr_fan3_input);
+	device_create_file(&new_client->dev, &dev_attr_fan3_min);
+	device_create_file(&new_client->dev, &dev_attr_fan3_div);
+	device_create_file(&new_client->dev, &dev_attr_alarms);
+	device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
+
+	return 0;
+
+ERROR2:
+	kfree(data);
+ERROR1:
+	if (is_isa)
+		release_region(address, LM78_EXTENT);
+ERROR0:
+	return err;
+}
+
+static int lm78_detach_client(struct i2c_client *client)
+{
+	int err;
+
+	if ((err = i2c_detach_client(client))) {
+		dev_err(&client->dev,
+		    "Client deregistration failed, client not detached.\n");
+		return err;
+	}
+
+	if(i2c_is_isa_client(client))
+		release_region(client->addr, LM78_EXTENT);
+
+	kfree(i2c_get_clientdata(client));
+
+	return 0;
+}
+
+/* The SMBus locks itself, but ISA access must be locked explicitly! 
+   We don't want to lock the whole ISA bus, so we lock each client
+   separately.
+   We ignore the LM78 BUSY flag at this moment - it could lead to deadlocks,
+   would slow down the LM78 access and should not be necessary.  */
+static int lm78_read_value(struct i2c_client *client, u8 reg)
+{
+	int res;
+	if (i2c_is_isa_client(client)) {
+		struct lm78_data *data = i2c_get_clientdata(client);
+		down(&data->lock);
+		outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET);
+		res = inb_p(client->addr + LM78_DATA_REG_OFFSET);
+		up(&data->lock);
+		return res;
+	} else
+		return i2c_smbus_read_byte_data(client, reg);
+}
+
+/* The SMBus locks itself, but ISA access muse be locked explicitly! 
+   We don't want to lock the whole ISA bus, so we lock each client
+   separately.
+   We ignore the LM78 BUSY flag at this moment - it could lead to deadlocks,
+   would slow down the LM78 access and should not be necessary. 
+   There are some ugly typecasts here, but the good new is - they should
+   nowhere else be necessary! */
+static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value)
+{
+	if (i2c_is_isa_client(client)) {
+		struct lm78_data *data = i2c_get_clientdata(client);
+		down(&data->lock);
+		outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET);
+		outb_p(value, client->addr + LM78_DATA_REG_OFFSET);
+		up(&data->lock);
+		return 0;
+	} else
+		return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+/* Called when we have found a new LM78. It should set limits, etc. */
+static void lm78_init_client(struct i2c_client *client)
+{
+	u8 config = lm78_read_value(client, LM78_REG_CONFIG);
+
+	/* Start monitoring */
+	if (!(config & 0x01))
+		lm78_write_value(client, LM78_REG_CONFIG,
+				 (config & 0xf7) | 0x01);
+}
+
+static struct lm78_data *lm78_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct lm78_data *data = i2c_get_clientdata(client);
+	int i;
+
+	down(&data->update_lock);
+
+	if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
+	    || !data->valid) {
+
+		dev_dbg(&client->dev, "Starting lm78 update\n");
+
+		for (i = 0; i <= 6; i++) {
+			data->in[i] =
+			    lm78_read_value(client, LM78_REG_IN(i));
+			data->in_min[i] =
+			    lm78_read_value(client, LM78_REG_IN_MIN(i));
+			data->in_max[i] =
+			    lm78_read_value(client, LM78_REG_IN_MAX(i));
+		}
+		for (i = 0; i < 3; i++) {
+			data->fan[i] =
+			    lm78_read_value(client, LM78_REG_FAN(i));
+			data->fan_min[i] =
+			    lm78_read_value(client, LM78_REG_FAN_MIN(i));
+		}
+		data->temp = lm78_read_value(client, LM78_REG_TEMP);
+		data->temp_over =
+		    lm78_read_value(client, LM78_REG_TEMP_OVER);
+		data->temp_hyst =
+		    lm78_read_value(client, LM78_REG_TEMP_HYST);
+		i = lm78_read_value(client, LM78_REG_VID_FANDIV);
+		data->vid = i & 0x0f;
+		if (data->type == lm79)
+			data->vid |=
+			    (lm78_read_value(client, LM78_REG_CHIPID) &
+			     0x01) << 4;
+		else
+			data->vid |= 0x10;
+		data->fan_div[0] = (i >> 4) & 0x03;
+		data->fan_div[1] = i >> 6;
+		data->alarms = lm78_read_value(client, LM78_REG_ALARM1) +
+		    (lm78_read_value(client, LM78_REG_ALARM2) << 8);
+		data->last_updated = jiffies;
+		data->valid = 1;
+
+		data->fan_div[2] = 1;
+	}
+
+	up(&data->update_lock);
+
+	return data;
+}
+
+static int __init sm_lm78_init(void)
+{
+	return i2c_add_driver(&lm78_driver);
+}
+
+static void __exit sm_lm78_exit(void)
+{
+	i2c_del_driver(&lm78_driver);
+}
+
+
+
+MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>");
+MODULE_DESCRIPTION("LM78, LM78-J and LM79 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sm_lm78_init);
+module_exit(sm_lm78_exit);