[PATCH] hwmon: New f71805f driver
Jean Delvare [Mon, 9 Jan 2006 22:26:14 +0000 (23:26 +0100)]
This is my f71805f hardware monitoring driver ported from lm_sensors
to Linux 2.6. This new driver differs from the other hardware monitoring
drivers in that it is implemented as a platform driver. This might not
be optimal yet (we would probably need a generic infrastructure and bus
type for Super-I/O logical devices) but it is certainly much better than
the i2c-isa solution.

Note that this driver requires lm_sensors CVS. I hope to get it
released as 2.10.0 soon.

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

Documentation/hwmon/sysfs-interface
MAINTAINERS
drivers/hwmon/Kconfig
drivers/hwmon/Makefile
drivers/hwmon/f71805f.c [new file with mode: 0644]

index 764cdc5..a0d0ab2 100644 (file)
@@ -179,11 +179,12 @@ temp[1-*]_auto_point[1-*]_temp_hyst
 ****************
 
 temp[1-3]_type Sensor type selection.
-               Integers 1, 2, 3 or thermistor Beta value (3435)
+               Integers 1 to 4 or thermistor Beta value (typically 3435)
                Read/Write.
                1: PII/Celeron Diode
                2: 3904 transistor
                3: thermal diode
+               4: thermistor (default/unknown Beta)
                Not all types are supported by all chips
 
 temp[1-4]_max  Temperature max value.
@@ -261,6 +262,21 @@ alarms             Alarm bitmask.
                of individual bits.
                Bits are defined in kernel/include/sensors.h.
 
+alarms_in      Alarm bitmask relative to in (voltage) channels
+               Read only
+               A '1' bit means an alarm, LSB corresponds to in0 and so on
+               Prefered to 'alarms' for newer chips
+
+alarms_fan     Alarm bitmask relative to fan channels
+               Read only
+               A '1' bit means an alarm, LSB corresponds to fan1 and so on
+               Prefered to 'alarms' for newer chips
+
+alarms_temp    Alarm bitmask relative to temp (temperature) channels
+               Read only
+               A '1' bit means an alarm, LSB corresponds to temp1 and so on
+               Prefered to 'alarms' for newer chips
+
 beep_enable    Beep/interrupt enable
                0 to disable.
                1 to enable.
index 11d44da..5b7a154 100644 (file)
@@ -929,6 +929,12 @@ M: sct@redhat.com, akpm@osdl.org, adilger@clusterfs.com
 L:     ext3-users@redhat.com
 S:     Maintained
 
+F71805F HARDWARE MONITORING DRIVER
+P:     Jean Delvare
+M:     khali@linux-fr.org
+L:     lm-sensors@lm-sensors.org
+S:     Maintained
+
 FARSYNC SYNCHRONOUS DRIVER
 P:     Kevin Curtis
 M:     kevin.curtis@farsite.co.uk
index c582959..7230d4e 100644 (file)
@@ -113,6 +113,16 @@ config SENSORS_DS1621
          This driver can also be built as a module.  If so, the module
          will be called ds1621.
 
+config SENSORS_F71805F
+       tristate "Fintek F71805F/FG"
+       depends on HWMON && EXPERIMENTAL
+       help
+         If you say yes here you get support for hardware monitoring
+         features of the Fintek F71805F/FG chips.
+
+         This driver can also be built as a module.  If so, the module
+         will be called f71805f.
+
 config SENSORS_FSCHER
        tristate "FSC Hermes"
        depends on HWMON && I2C && EXPERIMENTAL
index 06d4a1d..fbdb8d9 100644 (file)
@@ -18,6 +18,7 @@ obj-$(CONFIG_SENSORS_ADM1031) += adm1031.o
 obj-$(CONFIG_SENSORS_ADM9240)  += adm9240.o
 obj-$(CONFIG_SENSORS_ATXP1)    += atxp1.o
 obj-$(CONFIG_SENSORS_DS1621)   += ds1621.o
+obj-$(CONFIG_SENSORS_F71805F)  += f71805f.o
 obj-$(CONFIG_SENSORS_FSCHER)   += fscher.o
 obj-$(CONFIG_SENSORS_FSCPOS)   += fscpos.o
 obj-$(CONFIG_SENSORS_GL518SM)  += gl518sm.o
diff --git a/drivers/hwmon/f71805f.c b/drivers/hwmon/f71805f.c
new file mode 100644 (file)
index 0000000..e029e0a
--- /dev/null
@@ -0,0 +1,908 @@
+/*
+ * f71805f.c - driver for the Fintek F71805F/FG Super-I/O chip integrated
+ *             hardware monitoring features
+ * Copyright (C) 2005  Jean Delvare <khali@linux-fr.org>
+ *
+ * The F71805F/FG is a LPC Super-I/O chip made by Fintek. It integrates
+ * complete hardware monitoring features: voltage, fan and temperature
+ * sensors, and manual and automatic fan speed control.
+ *
+ * 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/platform_device.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <asm/io.h>
+
+static struct platform_device *pdev;
+
+#define DRVNAME "f71805f"
+
+/*
+ * Super-I/O constants and functions
+ */
+
+#define F71805F_LD_HWM         0x04
+
+#define SIO_REG_LDSEL          0x07    /* Logical device select */
+#define SIO_REG_DEVID          0x20    /* Device ID (2 bytes) */
+#define SIO_REG_DEVREV         0x22    /* Device revision */
+#define SIO_REG_MANID          0x23    /* Fintek ID (2 bytes) */
+#define SIO_REG_ENABLE         0x30    /* Logical device enable */
+#define SIO_REG_ADDR           0x60    /* Logical device address (2 bytes) */
+
+#define SIO_FINTEK_ID          0x1934
+#define SIO_F71805F_ID         0x0406
+
+static inline int
+superio_inb(int base, int reg)
+{
+       outb(reg, base);
+       return inb(base + 1);
+}
+
+static int
+superio_inw(int base, int reg)
+{
+       int val;
+       outb(reg++, base);
+       val = inb(base + 1) << 8;
+       outb(reg, base);
+       val |= inb(base + 1);
+       return val;
+}
+
+static inline void
+superio_select(int base, int ld)
+{
+       outb(SIO_REG_LDSEL, base);
+       outb(ld, base + 1);
+}
+
+static inline void
+superio_enter(int base)
+{
+       outb(0x87, base);
+       outb(0x87, base);
+}
+
+static inline void
+superio_exit(int base)
+{
+       outb(0xaa, base);
+}
+
+/*
+ * ISA constants
+ */
+
+#define REGION_LENGTH          2
+#define ADDR_REG_OFFSET                0
+#define DATA_REG_OFFSET                1
+
+static struct resource f71805f_resource __initdata = {
+       .flags  = IORESOURCE_IO,
+};
+
+/*
+ * Registers
+ */
+
+/* in nr from 0 to 8 (8-bit values) */
+#define F71805F_REG_IN(nr)             (0x10 + (nr))
+#define F71805F_REG_IN_HIGH(nr)                (0x40 + 2 * (nr))
+#define F71805F_REG_IN_LOW(nr)         (0x41 + 2 * (nr))
+/* fan nr from 0 to 2 (12-bit values, two registers) */
+#define F71805F_REG_FAN(nr)            (0x20 + 2 * (nr))
+#define F71805F_REG_FAN_LOW(nr)                (0x28 + 2 * (nr))
+#define F71805F_REG_FAN_CTRL(nr)       (0x60 + 16 * (nr))
+/* temp nr from 0 to 2 (8-bit values) */
+#define F71805F_REG_TEMP(nr)           (0x1B + (nr))
+#define F71805F_REG_TEMP_HIGH(nr)      (0x54 + 2 * (nr))
+#define F71805F_REG_TEMP_HYST(nr)      (0x55 + 2 * (nr))
+#define F71805F_REG_TEMP_MODE          0x01
+
+#define F71805F_REG_START              0x00
+/* status nr from 0 to 2 */
+#define F71805F_REG_STATUS(nr)         (0x36 + (nr))
+
+/*
+ * Data structures and manipulation thereof
+ */
+
+struct f71805f_data {
+       unsigned short addr;
+       const char *name;
+       struct semaphore lock;
+       struct class_device *class_dev;
+
+       struct semaphore update_lock;
+       char valid;             /* !=0 if following fields are valid */
+       unsigned long last_updated;     /* In jiffies */
+       unsigned long last_limits;      /* In jiffies */
+
+       /* Register values */
+       u8 in[9];
+       u8 in_high[9];
+       u8 in_low[9];
+       u16 fan[3];
+       u16 fan_low[3];
+       u8 fan_enabled;         /* Read once at init time */
+       u8 temp[3];
+       u8 temp_high[3];
+       u8 temp_hyst[3];
+       u8 temp_mode;
+       u8 alarms[3];
+};
+
+static inline long in_from_reg(u8 reg)
+{
+       return (reg * 8);
+}
+
+/* The 2 least significant bits are not used */
+static inline u8 in_to_reg(long val)
+{
+       if (val <= 0)
+               return 0;
+       if (val >= 2016)
+               return 0xfc;
+       return (((val + 16) / 32) << 2);
+}
+
+/* in0 is downscaled by a factor 2 internally */
+static inline long in0_from_reg(u8 reg)
+{
+       return (reg * 16);
+}
+
+static inline u8 in0_to_reg(long val)
+{
+       if (val <= 0)
+               return 0;
+       if (val >= 4032)
+               return 0xfc;
+       return (((val + 32) / 64) << 2);
+}
+
+/* The 4 most significant bits are not used */
+static inline long fan_from_reg(u16 reg)
+{
+       reg &= 0xfff;
+       if (!reg || reg == 0xfff)
+               return 0;
+       return (1500000 / reg);
+}
+
+static inline u16 fan_to_reg(long rpm)
+{
+       /* If the low limit is set below what the chip can measure,
+          store the largest possible 12-bit value in the registers,
+          so that no alarm will ever trigger. */
+       if (rpm < 367)
+               return 0xfff;
+       return (1500000 / rpm);
+}
+
+static inline long temp_from_reg(u8 reg)
+{
+       return (reg * 1000);
+}
+
+static inline u8 temp_to_reg(long val)
+{
+       if (val < 0)
+               val = 0;
+       else if (val > 1000 * 0xff)
+               val = 0xff;
+       return ((val + 500) / 1000);
+}
+
+/*
+ * Device I/O access
+ */
+
+static u8 f71805f_read8(struct f71805f_data *data, u8 reg)
+{
+       u8 val;
+
+       down(&data->lock);
+       outb(reg, data->addr + ADDR_REG_OFFSET);
+       val = inb(data->addr + DATA_REG_OFFSET);
+       up(&data->lock);
+
+       return val;
+}
+
+static void f71805f_write8(struct f71805f_data *data, u8 reg, u8 val)
+{
+       down(&data->lock);
+       outb(reg, data->addr + ADDR_REG_OFFSET);
+       outb(val, data->addr + DATA_REG_OFFSET);
+       up(&data->lock);
+}
+
+/* It is important to read the MSB first, because doing so latches the
+   value of the LSB, so we are sure both bytes belong to the same value. */
+static u16 f71805f_read16(struct f71805f_data *data, u8 reg)
+{
+       u16 val;
+
+       down(&data->lock);
+       outb(reg, data->addr + ADDR_REG_OFFSET);
+       val = inb(data->addr + DATA_REG_OFFSET) << 8;
+       outb(++reg, data->addr + ADDR_REG_OFFSET);
+       val |= inb(data->addr + DATA_REG_OFFSET);
+       up(&data->lock);
+
+       return val;
+}
+
+static void f71805f_write16(struct f71805f_data *data, u8 reg, u16 val)
+{
+       down(&data->lock);
+       outb(reg, data->addr + ADDR_REG_OFFSET);
+       outb(val >> 8, data->addr + DATA_REG_OFFSET);
+       outb(++reg, data->addr + ADDR_REG_OFFSET);
+       outb(val & 0xff, data->addr + DATA_REG_OFFSET);
+       up(&data->lock);
+}
+
+static struct f71805f_data *f71805f_update_device(struct device *dev)
+{
+       struct f71805f_data *data = dev_get_drvdata(dev);
+       int nr;
+
+       down(&data->update_lock);
+
+       /* Limit registers cache is refreshed after 60 seconds */
+       if (time_after(jiffies, data->last_updated + 60 * HZ)
+        || !data->valid) {
+               for (nr = 0; nr < 9; nr++) {
+                       data->in_high[nr] = f71805f_read8(data,
+                                           F71805F_REG_IN_HIGH(nr));
+                       data->in_low[nr] = f71805f_read8(data,
+                                          F71805F_REG_IN_LOW(nr));
+               }
+               for (nr = 0; nr < 3; nr++) {
+                       if (data->fan_enabled & (1 << nr))
+                               data->fan_low[nr] = f71805f_read16(data,
+                                                   F71805F_REG_FAN_LOW(nr));
+               }
+               for (nr = 0; nr < 3; nr++) {
+                       data->temp_high[nr] = f71805f_read8(data,
+                                             F71805F_REG_TEMP_HIGH(nr));
+                       data->temp_hyst[nr] = f71805f_read8(data,
+                                             F71805F_REG_TEMP_HYST(nr));
+               }
+               data->temp_mode = f71805f_read8(data, F71805F_REG_TEMP_MODE);
+
+               data->last_limits = jiffies;
+       }
+
+       /* Measurement registers cache is refreshed after 1 second */
+       if (time_after(jiffies, data->last_updated + HZ)
+        || !data->valid) {
+               for (nr = 0; nr < 9; nr++) {
+                       data->in[nr] = f71805f_read8(data,
+                                      F71805F_REG_IN(nr));
+               }
+               for (nr = 0; nr < 3; nr++) {
+                       if (data->fan_enabled & (1 << nr))
+                               data->fan[nr] = f71805f_read16(data,
+                                               F71805F_REG_FAN(nr));
+               }
+               for (nr = 0; nr < 3; nr++) {
+                       data->temp[nr] = f71805f_read8(data,
+                                        F71805F_REG_TEMP(nr));
+               }
+               for (nr = 0; nr < 3; nr++) {
+                       data->alarms[nr] = f71805f_read8(data,
+                                          F71805F_REG_STATUS(nr));
+               }
+
+               data->last_updated = jiffies;
+               data->valid = 1;
+       }
+
+       up(&data->update_lock);
+
+       return data;
+}
+
+/*
+ * Sysfs interface
+ */
+
+static ssize_t show_in0(struct device *dev, struct device_attribute *devattr,
+                       char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+
+       return sprintf(buf, "%ld\n", in0_from_reg(data->in[0]));
+}
+
+static ssize_t show_in0_max(struct device *dev, struct device_attribute
+                           *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+
+       return sprintf(buf, "%ld\n", in0_from_reg(data->in_high[0]));
+}
+
+static ssize_t show_in0_min(struct device *dev, struct device_attribute
+                           *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+
+       return sprintf(buf, "%ld\n", in0_from_reg(data->in_low[0]));
+}
+
+static ssize_t set_in0_max(struct device *dev, struct device_attribute
+                          *devattr, const char *buf, size_t count)
+{
+       struct f71805f_data *data = dev_get_drvdata(dev);
+       long val = simple_strtol(buf, NULL, 10);
+
+       down(&data->update_lock);
+       data->in_high[0] = in0_to_reg(val);
+       f71805f_write8(data, F71805F_REG_IN_HIGH(0), data->in_high[0]);
+       up(&data->update_lock);
+
+       return count;
+}
+
+static ssize_t set_in0_min(struct device *dev, struct device_attribute
+                          *devattr, const char *buf, size_t count)
+{
+       struct f71805f_data *data = dev_get_drvdata(dev);
+       long val = simple_strtol(buf, NULL, 10);
+
+       down(&data->update_lock);
+       data->in_low[0] = in0_to_reg(val);
+       f71805f_write8(data, F71805F_REG_IN_LOW(0), data->in_low[0]);
+       up(&data->update_lock);
+
+       return count;
+}
+
+static DEVICE_ATTR(in0_input, S_IRUGO, show_in0, NULL);
+static DEVICE_ATTR(in0_max, S_IRUGO| S_IWUSR, show_in0_max, set_in0_max);
+static DEVICE_ATTR(in0_min, S_IRUGO| S_IWUSR, show_in0_min, set_in0_min);
+
+static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
+                      char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+
+       return sprintf(buf, "%ld\n", in_from_reg(data->in[nr]));
+}
+
+static ssize_t show_in_max(struct device *dev, struct device_attribute
+                          *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+
+       return sprintf(buf, "%ld\n", in_from_reg(data->in_high[nr]));
+}
+
+static ssize_t show_in_min(struct device *dev, struct device_attribute
+                          *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+
+       return sprintf(buf, "%ld\n", in_from_reg(data->in_low[nr]));
+}
+
+static ssize_t set_in_max(struct device *dev, struct device_attribute
+                         *devattr, const char *buf, size_t count)
+{
+       struct f71805f_data *data = dev_get_drvdata(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+       long val = simple_strtol(buf, NULL, 10);
+
+       down(&data->update_lock);
+       data->in_high[nr] = in_to_reg(val);
+       f71805f_write8(data, F71805F_REG_IN_HIGH(nr), data->in_high[nr]);
+       up(&data->update_lock);
+
+       return count;
+}
+
+static ssize_t set_in_min(struct device *dev, struct device_attribute
+                         *devattr, const char *buf, size_t count)
+{
+       struct f71805f_data *data = dev_get_drvdata(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+       long val = simple_strtol(buf, NULL, 10);
+
+       down(&data->update_lock);
+       data->in_low[nr] = in_to_reg(val);
+       f71805f_write8(data, F71805F_REG_IN_LOW(nr), data->in_low[nr]);
+       up(&data->update_lock);
+
+       return count;
+}
+
+#define sysfs_in(offset)                                       \
+static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO,         \
+               show_in, NULL, offset);                         \
+static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
+               show_in_max, set_in_max, offset);               \
+static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
+               show_in_min, set_in_min, offset)
+
+sysfs_in(1);
+sysfs_in(2);
+sysfs_in(3);
+sysfs_in(4);
+sysfs_in(5);
+sysfs_in(6);
+sysfs_in(7);
+sysfs_in(8);
+
+static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
+                       char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+
+       return sprintf(buf, "%ld\n", fan_from_reg(data->fan[nr]));
+}
+
+static ssize_t show_fan_min(struct device *dev, struct device_attribute
+                           *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+
+       return sprintf(buf, "%ld\n", fan_from_reg(data->fan_low[nr]));
+}
+
+static ssize_t set_fan_min(struct device *dev, struct device_attribute
+                          *devattr, const char *buf, size_t count)
+{
+       struct f71805f_data *data = dev_get_drvdata(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+       long val = simple_strtol(buf, NULL, 10);
+
+       down(&data->update_lock);
+       data->fan_low[nr] = fan_to_reg(val);
+       f71805f_write16(data, F71805F_REG_FAN_LOW(nr), data->fan_low[nr]);
+       up(&data->update_lock);
+
+       return count;
+}
+
+#define sysfs_fan(offset)                                      \
+static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO,                \
+               show_fan, NULL, offset - 1);                    \
+static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,        \
+               show_fan_min, set_fan_min, offset - 1)
+
+sysfs_fan(1);
+sysfs_fan(2);
+sysfs_fan(3);
+
+static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
+                        char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+
+       return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr]));
+}
+
+static ssize_t show_temp_max(struct device *dev, struct device_attribute
+                            *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+
+       return sprintf(buf, "%ld\n", temp_from_reg(data->temp_high[nr]));
+}
+
+static ssize_t show_temp_hyst(struct device *dev, struct device_attribute
+                             *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+
+       return sprintf(buf, "%ld\n", temp_from_reg(data->temp_hyst[nr]));
+}
+
+static ssize_t show_temp_type(struct device *dev, struct device_attribute
+                             *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+
+       /* 3 is diode, 4 is thermistor */
+       return sprintf(buf, "%u\n", (data->temp_mode & (1 << nr)) ? 3 : 4);
+}
+
+static ssize_t set_temp_max(struct device *dev, struct device_attribute
+                           *devattr, const char *buf, size_t count)
+{
+       struct f71805f_data *data = dev_get_drvdata(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+       long val = simple_strtol(buf, NULL, 10);
+
+       down(&data->update_lock);
+       data->temp_high[nr] = temp_to_reg(val);
+       f71805f_write8(data, F71805F_REG_TEMP_HIGH(nr), data->temp_high[nr]);
+       up(&data->update_lock);
+
+       return count;
+}
+
+static ssize_t set_temp_hyst(struct device *dev, struct device_attribute
+                            *devattr, const char *buf, size_t count)
+{
+       struct f71805f_data *data = dev_get_drvdata(dev);
+       struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+       int nr = attr->index;
+       long val = simple_strtol(buf, NULL, 10);
+
+       down(&data->update_lock);
+       data->temp_hyst[nr] = temp_to_reg(val);
+       f71805f_write8(data, F71805F_REG_TEMP_HYST(nr), data->temp_hyst[nr]);
+       up(&data->update_lock);
+
+       return count;
+}
+
+#define sysfs_temp(offset)                                             \
+static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO,               \
+               show_temp, NULL, offset - 1);                           \
+static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,       \
+               show_temp_max, set_temp_max, offset - 1);               \
+static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR,  \
+               show_temp_hyst, set_temp_hyst, offset - 1);             \
+static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO,                        \
+               show_temp_type, NULL, offset - 1)
+
+sysfs_temp(1);
+sysfs_temp(2);
+sysfs_temp(3);
+
+static ssize_t show_alarms_in(struct device *dev, struct device_attribute
+                             *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+
+       return sprintf(buf, "%d\n", data->alarms[0] |
+                                   ((data->alarms[1] & 0x01) << 8));
+}
+
+static ssize_t show_alarms_fan(struct device *dev, struct device_attribute
+                              *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+
+       return sprintf(buf, "%d\n", data->alarms[2] & 0x07);
+}
+
+static ssize_t show_alarms_temp(struct device *dev, struct device_attribute
+                               *devattr, char *buf)
+{
+       struct f71805f_data *data = f71805f_update_device(dev);
+
+       return sprintf(buf, "%d\n", (data->alarms[1] >> 3) & 0x07);
+}
+
+static DEVICE_ATTR(alarms_in, S_IRUGO, show_alarms_in, NULL);
+static DEVICE_ATTR(alarms_fan, S_IRUGO, show_alarms_fan, NULL);
+static DEVICE_ATTR(alarms_temp, S_IRUGO, show_alarms_temp, NULL);
+
+static ssize_t show_name(struct device *dev, struct device_attribute
+                        *devattr, char *buf)
+{
+       struct f71805f_data *data = dev_get_drvdata(dev);
+
+       return sprintf(buf, "%s\n", data->name);
+}
+
+static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
+
+/*
+ * Device registration and initialization
+ */
+
+static void __devinit f71805f_init_device(struct f71805f_data *data)
+{
+       u8 reg;
+       int i;
+
+       reg = f71805f_read8(data, F71805F_REG_START);
+       if ((reg & 0x41) != 0x01) {
+               printk(KERN_DEBUG DRVNAME ": Starting monitoring "
+                      "operations\n");
+               f71805f_write8(data, F71805F_REG_START, (reg | 0x01) & ~0x40);
+       }
+
+       /* Fan monitoring can be disabled. If it is, we won't be polling
+          the register values, and won't create the related sysfs files. */
+       for (i = 0; i < 3; i++) {
+               reg = f71805f_read8(data, F71805F_REG_FAN_CTRL(i));
+               if (!(reg & 0x80))
+                       data->fan_enabled |= (1 << i);
+       }
+}
+
+static int __devinit f71805f_probe(struct platform_device *pdev)
+{
+       struct f71805f_data *data;
+       struct resource *res;
+       int err;
+
+       if (!(data = kzalloc(sizeof(struct f71805f_data), GFP_KERNEL))) {
+               err = -ENOMEM;
+               printk(KERN_ERR DRVNAME ": Out of memory\n");
+               goto exit;
+       }
+
+       res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+       data->addr = res->start;
+       init_MUTEX(&data->lock);
+       data->name = "f71805f";
+       init_MUTEX(&data->update_lock);
+
+       platform_set_drvdata(pdev, data);
+
+       data->class_dev = hwmon_device_register(&pdev->dev);
+       if (IS_ERR(data->class_dev)) {
+               err = PTR_ERR(data->class_dev);
+               dev_err(&pdev->dev, "Class registration failed (%d)\n", err);
+               goto exit_free;
+       }
+
+       /* Initialize the F71805F chip */
+       f71805f_init_device(data);
+
+       /* Register sysfs interface files */
+       device_create_file(&pdev->dev, &dev_attr_in0_input);
+       device_create_file(&pdev->dev, &dev_attr_in0_max);
+       device_create_file(&pdev->dev, &dev_attr_in0_min);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in1_input.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in2_input.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in3_input.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in4_input.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in5_input.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in6_input.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in7_input.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in8_input.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in1_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in2_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in3_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in4_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in5_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in6_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in7_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in8_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in1_min.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in2_min.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in3_min.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in4_min.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in5_min.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in6_min.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in7_min.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_in8_min.dev_attr);
+       if (data->fan_enabled & (1 << 0)) {
+               device_create_file(&pdev->dev,
+                                  &sensor_dev_attr_fan1_input.dev_attr);
+               device_create_file(&pdev->dev,
+                                  &sensor_dev_attr_fan1_min.dev_attr);
+       }
+       if (data->fan_enabled & (1 << 1)) {
+               device_create_file(&pdev->dev,
+                                  &sensor_dev_attr_fan2_input.dev_attr);
+               device_create_file(&pdev->dev,
+                                  &sensor_dev_attr_fan2_min.dev_attr);
+       }
+       if (data->fan_enabled & (1 << 2)) {
+               device_create_file(&pdev->dev,
+                                  &sensor_dev_attr_fan3_input.dev_attr);
+               device_create_file(&pdev->dev,
+                                  &sensor_dev_attr_fan3_min.dev_attr);
+       }
+       device_create_file(&pdev->dev,
+                          &sensor_dev_attr_temp1_input.dev_attr);
+       device_create_file(&pdev->dev,
+                          &sensor_dev_attr_temp2_input.dev_attr);
+       device_create_file(&pdev->dev,
+                          &sensor_dev_attr_temp3_input.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_temp1_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_temp2_max.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_temp3_max.dev_attr);
+       device_create_file(&pdev->dev,
+                          &sensor_dev_attr_temp1_max_hyst.dev_attr);
+       device_create_file(&pdev->dev,
+                          &sensor_dev_attr_temp2_max_hyst.dev_attr);
+       device_create_file(&pdev->dev,
+                          &sensor_dev_attr_temp3_max_hyst.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_temp1_type.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_temp2_type.dev_attr);
+       device_create_file(&pdev->dev, &sensor_dev_attr_temp3_type.dev_attr);
+       device_create_file(&pdev->dev, &dev_attr_alarms_in);
+       device_create_file(&pdev->dev, &dev_attr_alarms_fan);
+       device_create_file(&pdev->dev, &dev_attr_alarms_temp);
+       device_create_file(&pdev->dev, &dev_attr_name);
+
+       return 0;
+
+exit_free:
+       kfree(data);
+exit:
+       return err;
+}
+
+static int __devexit f71805f_remove(struct platform_device *pdev)
+{
+       struct f71805f_data *data = platform_get_drvdata(pdev);
+
+       platform_set_drvdata(pdev, NULL);
+       hwmon_device_unregister(data->class_dev);
+       kfree(data);
+
+       return 0;
+}
+
+static struct platform_driver f71805f_driver = {
+       .driver = {
+               .owner  = THIS_MODULE,
+               .name   = DRVNAME,
+       },
+       .probe          = f71805f_probe,
+       .remove         = __devexit_p(f71805f_remove),
+};
+
+static int __init f71805f_device_add(unsigned short address)
+{
+       int err;
+
+       pdev = platform_device_alloc(DRVNAME, address);
+       if (!pdev) {
+               err = -ENOMEM;
+               printk(KERN_ERR DRVNAME ": Device allocation failed\n");
+               goto exit;
+       }
+
+       f71805f_resource.start = address;
+       f71805f_resource.end = address + REGION_LENGTH - 1;
+       f71805f_resource.name = pdev->name;
+       err = platform_device_add_resources(pdev, &f71805f_resource, 1);
+       if (err) {
+               printk(KERN_ERR DRVNAME ": Device resource addition failed "
+                      "(%d)\n", err);
+               goto exit_device_put;
+       }
+
+       err = platform_device_add(pdev);
+       if (err) {
+               printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
+                      err);
+               goto exit_device_put;
+       }
+
+       return 0;
+
+exit_device_put:
+       platform_device_put(pdev);
+exit:
+       return err;
+}
+
+static int __init f71805f_find(int sioaddr, unsigned short *address)
+{
+       int err = -ENODEV;
+       u16 devid;
+
+       superio_enter(sioaddr);
+
+       devid = superio_inw(sioaddr, SIO_REG_MANID);
+       if (devid != SIO_FINTEK_ID)
+               goto exit;
+
+       devid = superio_inw(sioaddr, SIO_REG_DEVID);
+       if (devid != SIO_F71805F_ID) {
+               printk(KERN_INFO DRVNAME ": Unsupported Fintek device, "
+                      "skipping\n");
+               goto exit;
+       }
+
+       superio_select(sioaddr, F71805F_LD_HWM);
+       if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
+               printk(KERN_WARNING DRVNAME ": Device not activated, "
+                      "skipping\n");
+               goto exit;
+       }
+
+       *address = superio_inw(sioaddr, SIO_REG_ADDR);
+       if (*address == 0) {
+               printk(KERN_WARNING DRVNAME ": Base address not set, "
+                      "skipping\n");
+               goto exit;
+       }
+
+       err = 0;
+       printk(KERN_INFO DRVNAME ": Found F71805F chip at %#x, revision %u\n",
+              *address, superio_inb(sioaddr, SIO_REG_DEVREV));
+
+exit:
+       superio_exit(sioaddr);
+       return err;
+}
+
+static int __init f71805f_init(void)
+{
+       int err;
+       unsigned short address;
+
+       if (f71805f_find(0x2e, &address)
+        && f71805f_find(0x4e, &address))
+               return -ENODEV;
+
+       err = platform_driver_register(&f71805f_driver);
+       if (err)
+               goto exit;
+
+       /* Sets global pdev as a side effect */
+       err = f71805f_device_add(address);
+       if (err)
+               goto exit_driver;
+
+       return 0;
+
+exit_driver:
+       platform_driver_unregister(&f71805f_driver);
+exit:
+       return err;
+}
+
+static void __exit f71805f_exit(void)
+{
+       platform_device_unregister(pdev);
+       platform_driver_unregister(&f71805f_driver);
+}
+
+MODULE_AUTHOR("Jean Delvare <khali@linux-fr>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("F71805F hardware monitoring driver");
+
+module_init(f71805f_init);
+module_exit(f71805f_exit);