Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 796 insertions, 0 deletions

diff --git a/drivers/i2c/chips/lm78.c b/drivers/i2c/chips/lm78.c
new file mode 100644
index 000000000000..6d52d14eb31c
--- /dev/null
+++ b/drivers/i2c/chips/lm78.c
@@ -0,0 +1,796 @@
+/*
+    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/config.h>
+#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, 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, char *buf)   \
+{                                                               \
+        return show_in_min(dev, buf, offset);                   \
+}                                                               \
+static ssize_t                                                  \
+        show_in##offset##_max (struct device *dev, char *buf)   \
+{                                                               \
+        return show_in_max(dev, buf, offset);                   \
+}                                                               \
+static ssize_t set_in##offset##_min (struct device *dev,        \
+                const char *buf, size_t count)                  \
+{                                                               \
+        return set_in_min(dev, buf, count, offset);             \
+}                                                               \
+static ssize_t set_in##offset##_max (struct device *dev,        \
+                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, 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, 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, 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, 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, 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, char *buf)        \
+{                                                                       \
+        return show_fan(dev, buf, offset - 1);                          \
+}                                                                       \
+static ssize_t show_fan_##offset##_min (struct device *dev, char *buf)  \
+{                                                                       \
+        return show_fan_min(dev, buf, offset - 1);                      \
+}                                                                       \
+static ssize_t show_fan_##offset##_div (struct device *dev, char *buf)  \
+{                                                                       \
+        return show_fan_div(dev, buf, offset - 1);                      \
+}                                                                       \
+static ssize_t set_fan_##offset##_min (struct device *dev,              \
+                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, const char *buf,
+                size_t count)
+{
+        return set_fan_div(dev, buf, count, 0) ;
+}
+
+static ssize_t set_fan_2_div(struct device *dev, 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, 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, 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 explicitely! 
+   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 explicitely! 
+   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);