Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/i2c-2.6

1 files changed, 817 insertions, 0 deletions

diff --git a/drivers/hwmon/sis5595.c b/drivers/hwmon/sis5595.c
new file mode 100644
index 000000000000..6bbfc8fb4f13
--- /dev/null
+++ b/drivers/hwmon/sis5595.c
@@ -0,0 +1,817 @@
+/*
+    sis5595.c - Part of lm_sensors, Linux kernel modules
+                for hardware monitoring
+
+    Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>,
+                        Kyösti Mälkki <kmalkki@cc.hut.fi>, and
+                        Mark D. Studebaker <mdsxyz123@yahoo.com>
+    Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with
+    the help of Jean Delvare <khali@linux-fr.org>
+
+    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.
+*/
+
+/*
+   SiS southbridge has a LM78-like chip integrated on the same IC.
+   This driver is a customized copy of lm78.c
+   
+   Supports following revisions:
+        Version         PCI ID          PCI Revision
+        1               1039/0008       AF or less
+        2               1039/0008       B0 or greater
+
+   Note: these chips contain a 0008 device which is incompatible with the
+         5595. We recognize these by the presence of the listed
+         "blacklist" PCI ID and refuse to load.
+
+   NOT SUPPORTED        PCI ID          BLACKLIST PCI ID        
+         540            0008            0540
+         550            0008            0550
+        5513            0008            5511
+        5581            0008            5597
+        5582            0008            5597
+        5597            0008            5597
+        5598            0008            5597/5598
+         630            0008            0630
+         645            0008            0645
+         730            0008            0730
+         735            0008            0735
+*/
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <linux/i2c.h>
+#include <linux/i2c-sensor.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <asm/io.h>
+
+
+/* If force_addr is set to anything different from 0, we forcibly enable
+   the device at the given address. */
+static u16 force_addr;
+module_param(force_addr, ushort, 0);
+MODULE_PARM_DESC(force_addr,
+                 "Initialize the base address of the sensors");
+
+/* Addresses to scan.
+   Note that we can't determine the ISA address until we have initialized
+   our module */
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+static unsigned int normal_isa[] = { 0x0000, I2C_CLIENT_ISA_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_1(sis5595);
+
+/* Many SIS5595 constants specified below */
+
+/* Length of ISA address segment */
+#define SIS5595_EXTENT 8
+/* PCI Config Registers */
+#define SIS5595_REVISION_REG 0x08
+#define SIS5595_BASE_REG 0x68
+#define SIS5595_PIN_REG 0x7A
+#define SIS5595_ENABLE_REG 0x7B
+
+/* Where are the ISA address/data registers relative to the base address */
+#define SIS5595_ADDR_REG_OFFSET 5
+#define SIS5595_DATA_REG_OFFSET 6
+
+/* The SIS5595 registers */
+#define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2)
+#define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2)
+#define SIS5595_REG_IN(nr) (0x20 + (nr))
+
+#define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr))
+#define SIS5595_REG_FAN(nr) (0x28 + (nr))
+
+/* On the first version of the chip, the temp registers are separate.
+   On the second version,
+   TEMP pin is shared with IN4, configured in PCI register 0x7A.
+   The registers are the same as well.
+   OVER and HYST are really MAX and MIN. */
+
+#define REV2MIN 0xb0
+#define SIS5595_REG_TEMP        (( data->revision) >= REV2MIN) ? \
+                                        SIS5595_REG_IN(4) : 0x27
+#define SIS5595_REG_TEMP_OVER   (( data->revision) >= REV2MIN) ? \
+                                        SIS5595_REG_IN_MAX(4) : 0x39
+#define SIS5595_REG_TEMP_HYST   (( data->revision) >= REV2MIN) ? \
+                                        SIS5595_REG_IN_MIN(4) : 0x3a
+
+#define SIS5595_REG_CONFIG 0x40
+#define SIS5595_REG_ALARM1 0x41
+#define SIS5595_REG_ALARM2 0x42
+#define SIS5595_REG_FANDIV 0x47
+
+/* Conversions. 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 (-54.12C to +157.53C)
+   REG: 0.83C/bit + 52.12, two's complement  */
+static inline int TEMP_FROM_REG(s8 val)
+{
+        return val * 830 + 52120;
+}
+static inline s8 TEMP_TO_REG(int val)
+{
+        int nval = SENSORS_LIMIT(val, -54120, 157530) ;
+        return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830;
+}
+
+/* FAN DIV: 1, 2, 4, or 8 (defaults to 2)
+   REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */
+static inline u8 DIV_TO_REG(int val)
+{
+        return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1;
+}
+#define DIV_FROM_REG(val) (1 << (val))
+
+/* For the SIS5595, we need to keep some data in memory. That
+   data is pointed to by sis5595_list[NR]->data. The structure itself is
+   dynamically allocated, at the time when the new sis5595 client is
+   allocated. */
+struct sis5595_data {
+        struct i2c_client client;
+        struct semaphore lock;
+
+        struct semaphore update_lock;
+        char valid;             /* !=0 if following fields are valid */
+        unsigned long last_updated;     /* In jiffies */
+        char maxins;            /* == 3 if temp enabled, otherwise == 4 */
+        u8 revision;            /* Reg. value */
+
+        u8 in[5];               /* Register value */
+        u8 in_max[5];           /* Register value */
+        u8 in_min[5];           /* Register value */
+        u8 fan[2];              /* Register value */
+        u8 fan_min[2];          /* Register value */
+        s8 temp;                /* Register value */
+        s8 temp_over;           /* Register value */
+        s8 temp_hyst;           /* Register value */
+        u8 fan_div[2];          /* Register encoding, shifted right */
+        u16 alarms;             /* Register encoding, combined */
+};
+
+static struct pci_dev *s_bridge;        /* pointer to the (only) sis5595 */
+
+static int sis5595_attach_adapter(struct i2c_adapter *adapter);
+static int sis5595_detect(struct i2c_adapter *adapter, int address, int kind);
+static int sis5595_detach_client(struct i2c_client *client);
+
+static int sis5595_read_value(struct i2c_client *client, u8 register);
+static int sis5595_write_value(struct i2c_client *client, u8 register, u8 value);
+static struct sis5595_data *sis5595_update_device(struct device *dev);
+static void sis5595_init_client(struct i2c_client *client);
+
+static struct i2c_driver sis5595_driver = {
+        .owner          = THIS_MODULE,
+        .name           = "sis5595",
+        .id             = I2C_DRIVERID_SIS5595,
+        .flags          = I2C_DF_NOTIFY,
+        .attach_adapter = sis5595_attach_adapter,
+        .detach_client  = sis5595_detach_client,
+};
+
+/* 4 Voltages */
+static ssize_t show_in(struct device *dev, char *buf, int nr)
+{
+        struct sis5595_data *data = sis5595_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 sis5595_data *data = sis5595_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 sis5595_data *data = sis5595_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 sis5595_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);
+        sis5595_write_value(client, SIS5595_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 sis5595_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);
+        sis5595_write_value(client, SIS5595_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);
+
+/* Temperature */
+static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct sis5595_data *data = sis5595_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 sis5595_data *data = sis5595_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 sis5595_data *data = i2c_get_clientdata(client);
+        long val = simple_strtol(buf, NULL, 10);
+
+        down(&data->update_lock);
+        data->temp_over = TEMP_TO_REG(val);
+        sis5595_write_value(client, SIS5595_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 sis5595_data *data = sis5595_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 sis5595_data *data = i2c_get_clientdata(client);
+        long val = simple_strtol(buf, NULL, 10);
+
+        down(&data->update_lock);
+        data->temp_hyst = TEMP_TO_REG(val);
+        sis5595_write_value(client, SIS5595_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);
+
+/* 2 Fans */
+static ssize_t show_fan(struct device *dev, char *buf, int nr)
+{
+        struct sis5595_data *data = sis5595_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 sis5595_data *data = sis5595_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 sis5595_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]));
+        sis5595_write_value(client, SIS5595_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 sis5595_data *data = sis5595_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 sis5595_data *data = i2c_get_clientdata(client);
+        unsigned long min;
+        unsigned long val = simple_strtoul(buf, NULL, 10);
+        int reg;
+
+        down(&data->update_lock);
+        min = FAN_FROM_REG(data->fan_min[nr],
+                        DIV_FROM_REG(data->fan_div[nr]));
+        reg = sis5595_read_value(client, SIS5595_REG_FANDIV);
+
+        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;
+        }
+        
+        switch (nr) {
+        case 0:
+                reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
+                break;
+        case 1:
+                reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
+                break;
+        }
+        sis5595_write_value(client, SIS5595_REG_FANDIV, reg);
+        data->fan_min[nr] =
+                FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
+        sis5595_write_value(client, SIS5595_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);
+
+show_fan_offset(1);
+show_fan_offset(2);
+
+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) ;
+}
+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);
+
+/* Alarms */
+static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct sis5595_data *data = sis5595_update_device(dev);
+        return sprintf(buf, "%d\n", data->alarms);
+}
+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+ 
+/* This is called when the module is loaded */
+static int sis5595_attach_adapter(struct i2c_adapter *adapter)
+{
+        if (!(adapter->class & I2C_CLASS_HWMON))
+                return 0;
+        return i2c_detect(adapter, &addr_data, sis5595_detect);
+}
+
+int sis5595_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+        int err = 0;
+        int i;
+        struct i2c_client *new_client;
+        struct sis5595_data *data;
+        char val;
+        u16 a;
+
+        /* Make sure we are probing the ISA bus!!  */
+        if (!i2c_is_isa_adapter(adapter))
+                goto exit;
+
+        if (force_addr)
+                address = force_addr & ~(SIS5595_EXTENT - 1);
+        /* Reserve the ISA region */
+        if (!request_region(address, SIS5595_EXTENT, sis5595_driver.name)) {
+                err = -EBUSY;
+                goto exit;
+        }
+        if (force_addr) {
+                dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n", address);
+                if (PCIBIOS_SUCCESSFUL !=
+                    pci_write_config_word(s_bridge, SIS5595_BASE_REG, address))
+                        goto exit_release;
+                if (PCIBIOS_SUCCESSFUL !=
+                    pci_read_config_word(s_bridge, SIS5595_BASE_REG, &a))
+                        goto exit_release;
+                if ((a & ~(SIS5595_EXTENT - 1)) != address)
+                        /* doesn't work for some chips? */
+                        goto exit_release;
+        }
+
+        if (PCIBIOS_SUCCESSFUL !=
+            pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) {
+                goto exit_release;
+        }
+        if ((val & 0x80) == 0) {
+                if (PCIBIOS_SUCCESSFUL !=
+                    pci_write_config_byte(s_bridge, SIS5595_ENABLE_REG,
+                                          val | 0x80))
+                        goto exit_release;
+                if (PCIBIOS_SUCCESSFUL !=
+                    pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val))
+                        goto exit_release;
+                if ((val & 0x80) == 0) 
+                        /* doesn't work for some chips! */
+                        goto exit_release;
+        }
+
+        if (!(data = kmalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
+                err = -ENOMEM;
+                goto exit_release;
+        }
+        memset(data, 0, sizeof(struct sis5595_data));
+
+        new_client = &data->client;
+        new_client->addr = address;
+        init_MUTEX(&data->lock);
+        i2c_set_clientdata(new_client, data);
+        new_client->adapter = adapter;
+        new_client->driver = &sis5595_driver;
+        new_client->flags = 0;
+
+        /* Check revision and pin registers to determine whether 4 or 5 voltages */
+        pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision));
+        /* 4 voltages, 1 temp */
+        data->maxins = 3;
+        if (data->revision >= REV2MIN) {
+                pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val);
+                if (!(val & 0x80))
+                        /* 5 voltages, no temps */
+                        data->maxins = 4;
+        }
+        
+        /* Fill in the remaining client fields and put it into the global list */
+        strlcpy(new_client->name, "sis5595", I2C_NAME_SIZE);
+
+        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 exit_free;
+        
+        /* Initialize the SIS5595 chip */
+        sis5595_init_client(new_client);
+
+        /* A few vars need to be filled upon startup */
+        for (i = 0; i < 2; i++) {
+                data->fan_min[i] = sis5595_read_value(new_client,
+                                        SIS5595_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);
+        if (data->maxins == 4) {
+                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_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_alarms);
+        if (data->maxins == 3) {
+                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);
+        }
+        return 0;
+        
+exit_free:
+        kfree(data);
+exit_release:
+        release_region(address, SIS5595_EXTENT);
+exit:
+        return err;
+}
+
+static int sis5595_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, SIS5595_EXTENT);
+
+        kfree(i2c_get_clientdata(client));
+
+        return 0;
+}
+
+
+/* ISA access must be locked explicitly. */
+static int sis5595_read_value(struct i2c_client *client, u8 reg)
+{
+        int res;
+
+        struct sis5595_data *data = i2c_get_clientdata(client);
+        down(&data->lock);
+        outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET);
+        res = inb_p(client->addr + SIS5595_DATA_REG_OFFSET);
+        up(&data->lock);
+        return res;
+}
+
+static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value)
+{
+        struct sis5595_data *data = i2c_get_clientdata(client);
+        down(&data->lock);
+        outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET);
+        outb_p(value, client->addr + SIS5595_DATA_REG_OFFSET);
+        up(&data->lock);
+        return 0;
+}
+
+/* Called when we have found a new SIS5595. */
+static void sis5595_init_client(struct i2c_client *client)
+{
+        u8 config = sis5595_read_value(client, SIS5595_REG_CONFIG);
+        if (!(config & 0x01))
+                sis5595_write_value(client, SIS5595_REG_CONFIG,
+                                (config & 0xf7) | 0x01);
+}
+
+static struct sis5595_data *sis5595_update_device(struct device *dev)
+{
+        struct i2c_client *client = to_i2c_client(dev);
+        struct sis5595_data *data = i2c_get_clientdata(client);
+        int i;
+
+        down(&data->update_lock);
+
+        if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
+            || !data->valid) {
+
+                for (i = 0; i <= data->maxins; i++) {
+                        data->in[i] =
+                            sis5595_read_value(client, SIS5595_REG_IN(i));
+                        data->in_min[i] =
+                            sis5595_read_value(client,
+                                               SIS5595_REG_IN_MIN(i));
+                        data->in_max[i] =
+                            sis5595_read_value(client,
+                                               SIS5595_REG_IN_MAX(i));
+                }
+                for (i = 0; i < 2; i++) {
+                        data->fan[i] =
+                            sis5595_read_value(client, SIS5595_REG_FAN(i));
+                        data->fan_min[i] =
+                            sis5595_read_value(client,
+                                               SIS5595_REG_FAN_MIN(i));
+                }
+                if (data->maxins == 3) {
+                        data->temp =
+                            sis5595_read_value(client, SIS5595_REG_TEMP);
+                        data->temp_over =
+                            sis5595_read_value(client, SIS5595_REG_TEMP_OVER);
+                        data->temp_hyst =
+                            sis5595_read_value(client, SIS5595_REG_TEMP_HYST);
+                }
+                i = sis5595_read_value(client, SIS5595_REG_FANDIV);
+                data->fan_div[0] = (i >> 4) & 0x03;
+                data->fan_div[1] = i >> 6;
+                data->alarms =
+                    sis5595_read_value(client, SIS5595_REG_ALARM1) |
+                    (sis5595_read_value(client, SIS5595_REG_ALARM2) << 8);
+                data->last_updated = jiffies;
+                data->valid = 1;
+        }
+
+        up(&data->update_lock);
+
+        return data;
+}
+
+static struct pci_device_id sis5595_pci_ids[] = {
+        { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) },
+        { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, sis5595_pci_ids);
+
+static int blacklist[] __devinitdata = {
+        PCI_DEVICE_ID_SI_540,
+        PCI_DEVICE_ID_SI_550,
+        PCI_DEVICE_ID_SI_630,
+        PCI_DEVICE_ID_SI_645,
+        PCI_DEVICE_ID_SI_730,
+        PCI_DEVICE_ID_SI_735,
+        PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but
+                                  that ID shows up in other chips so we
+                                  use the 5511 ID for recognition */
+        PCI_DEVICE_ID_SI_5597,
+        PCI_DEVICE_ID_SI_5598,
+        0 };
+
+static int __devinit sis5595_pci_probe(struct pci_dev *dev,
+                                       const struct pci_device_id *id)
+{
+        u16 val;
+        int *i;
+        int addr = 0;
+
+        for (i = blacklist; *i != 0; i++) {
+                struct pci_dev *dev;
+                dev = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL);
+                if (dev) {
+                        dev_err(&dev->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i);
+                        pci_dev_put(dev);
+                        return -ENODEV;
+                }
+        }
+        
+        if (PCIBIOS_SUCCESSFUL !=
+            pci_read_config_word(dev, SIS5595_BASE_REG, &val))
+                return -ENODEV;
+        
+        addr = val & ~(SIS5595_EXTENT - 1);
+        if (addr == 0 && force_addr == 0) {
+                dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n");
+                return -ENODEV;
+        }
+        if (force_addr)
+                addr = force_addr;      /* so detect will get called */
+
+        if (!addr) {
+                dev_err(&dev->dev,"No SiS 5595 sensors found.\n");
+                return -ENODEV;
+        }
+        normal_isa[0] = addr;
+
+        s_bridge = pci_dev_get(dev);
+        if (i2c_add_driver(&sis5595_driver)) {
+                pci_dev_put(s_bridge);
+                s_bridge = NULL;
+        }
+
+        /* Always return failure here.  This is to allow other drivers to bind
+         * to this pci device.  We don't really want to have control over the
+         * pci device, we only wanted to read as few register values from it.
+         */
+        return -ENODEV;
+}
+
+static struct pci_driver sis5595_pci_driver = {
+        .name            = "sis5595",
+        .id_table        = sis5595_pci_ids,
+        .probe           = sis5595_pci_probe,
+};
+
+static int __init sm_sis5595_init(void)
+{
+        return pci_register_driver(&sis5595_pci_driver);
+}
+
+static void __exit sm_sis5595_exit(void)
+{
+        pci_unregister_driver(&sis5595_pci_driver);
+        if (s_bridge != NULL) {
+                i2c_del_driver(&sis5595_driver);
+                pci_dev_put(s_bridge);
+                s_bridge = NULL;
+        }
+}
+
+MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
+MODULE_DESCRIPTION("SiS 5595 Sensor device");
+MODULE_LICENSE("GPL");
+
+module_init(sm_sis5595_init);
+module_exit(sm_sis5595_exit);