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pc87360.c

/*
 *  pc87360.c - Part of lm_sensors, Linux kernel modules
 *              for hardware monitoring
 *  Copyright (C) 2004, 2007 Jean Delvare <khali@linux-fr.org>
 *
 *  Copied from smsc47m1.c:
 *  Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
 *
 *  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.
 *
 *  Supports the following chips:
 *
 *  Chip        #vin    #fan    #pwm    #temp   devid
 *  PC87360     -       2       2       -       0xE1
 *  PC87363     -       2       2       -       0xE8
 *  PC87364     -       3       3       -       0xE4
 *  PC87365     11      3       3       2       0xE5
 *  PC87366     11      3       3       3-4     0xE9
 *
 *  This driver assumes that no more than one chip is present, and one of
 *  the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
 */

#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/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <asm/io.h>

static u8 devid;
static struct platform_device *pdev;
static unsigned short extra_isa[3];
static u8 confreg[4];

static int init = 1;
module_param(init, int, 0);
MODULE_PARM_DESC(init,
 "Chip initialization level:\n"
 " 0: None\n"
 "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
 " 2: Forcibly enable all voltage and temperature channels, except in9\n"
 " 3: Forcibly enable all voltage and temperature channels, including in9");

/*
 * Super-I/O registers and operations
 */

#define DEV 0x07  /* Register: Logical device select */
#define DEVID     0x20  /* Register: Device ID */
#define ACT 0x30  /* Register: Device activation */
#define BASE      0x60  /* Register: Base address */

#define FSCM      0x09  /* Logical device: fans */
#define VLM 0x0d  /* Logical device: voltages */
#define TMS 0x0e  /* Logical device: temperatures */
static const u8 logdev[3] = { FSCM, VLM, TMS };

#define LD_FAN          0
#define LD_IN           1
#define LD_TEMP         2

static inline void superio_outb(int sioaddr, int reg, int val)
{
      outb(reg, sioaddr);
      outb(val, sioaddr+1);
}

static inline int superio_inb(int sioaddr, int reg)
{
      outb(reg, sioaddr);
      return inb(sioaddr+1);
}

static inline void superio_exit(int sioaddr)
{
      outb(0x02, sioaddr);
      outb(0x02, sioaddr+1);
}

/*
 * Logical devices
 */

#define PC87360_EXTENT        0x10
#define PC87365_REG_BANK      0x09
#define NO_BANK               0xff

/*
 * Fan registers and conversions
 */

/* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
#define PC87360_REG_PRESCALE(nr)    (0x00 + 2 * (nr))
#define PC87360_REG_PWM(nr)         (0x01 + 2 * (nr))
#define PC87360_REG_FAN_MIN(nr)           (0x06 + 3 * (nr))
#define PC87360_REG_FAN(nr)         (0x07 + 3 * (nr))
#define PC87360_REG_FAN_STATUS(nr)  (0x08 + 3 * (nr))

#define FAN_FROM_REG(val,div)       ((val) == 0 ? 0: \
                               480000 / ((val)*(div)))
#define FAN_TO_REG(val,div)         ((val) <= 100 ? 0 : \
                               480000 / ((val)*(div)))
#define FAN_DIV_FROM_REG(val)       (1 << ((val >> 5) & 0x03))
#define FAN_STATUS_FROM_REG(val)    ((val) & 0x07)

#define FAN_CONFIG_MONITOR(val,nr)  (((val) >> (2 + nr * 3)) & 1)
#define FAN_CONFIG_CONTROL(val,nr)  (((val) >> (3 + nr * 3)) & 1)
#define FAN_CONFIG_INVERT(val,nr)   (((val) >> (4 + nr * 3)) & 1)

#define PWM_FROM_REG(val,inv)       ((inv) ? 255 - (val) : (val))
static inline u8 PWM_TO_REG(int val, int inv)
{
      if (inv)
            val = 255 - val;
      if (val < 0)
            return 0;
      if (val > 255)
            return 255;
      return val;
}

/*
 * Voltage registers and conversions
 */

#define PC87365_REG_IN_CONVRATE           0x07
#define PC87365_REG_IN_CONFIG       0x08
#define PC87365_REG_IN              0x0B
#define PC87365_REG_IN_MIN          0x0D
#define PC87365_REG_IN_MAX          0x0C
#define PC87365_REG_IN_STATUS       0x0A
#define PC87365_REG_IN_ALARMS1            0x00
#define PC87365_REG_IN_ALARMS2            0x01
#define PC87365_REG_VID             0x06

#define IN_FROM_REG(val,ref)        (((val) * (ref) + 128) / 256)
#define IN_TO_REG(val,ref)          ((val) < 0 ? 0 : \
                               (val)*256 >= (ref)*255 ? 255: \
                               ((val) * 256 + (ref)/2) / (ref))

/*
 * Temperature registers and conversions
 */

#define PC87365_REG_TEMP_CONFIG           0x08
#define PC87365_REG_TEMP            0x0B
#define PC87365_REG_TEMP_MIN        0x0D
#define PC87365_REG_TEMP_MAX        0x0C
#define PC87365_REG_TEMP_CRIT       0x0E
#define PC87365_REG_TEMP_STATUS           0x0A
#define PC87365_REG_TEMP_ALARMS           0x00

#define TEMP_FROM_REG(val)          ((val) * 1000)
#define TEMP_TO_REG(val)            ((val) < -55000 ? -55 : \
                               (val) > 127000 ? 127 : \
                               (val) < 0 ? ((val) - 500) / 1000 : \
                               ((val) + 500) / 1000)

/*
 * Device data
 */

struct pc87360_data {
      const char *name;
      struct device *hwmon_dev;
      struct mutex lock;
      struct mutex update_lock;
      char valid;       /* !=0 if following fields are valid */
      unsigned long last_updated;   /* In jiffies */

      int address[3];

      u8 fannr, innr, tempnr;

      u8 fan[3];        /* Register value */
      u8 fan_min[3];          /* Register value */
      u8 fan_status[3]; /* Register value */
      u8 pwm[3];        /* Register value */
      u16 fan_conf;           /* Configuration register values, combined */

      u16 in_vref;            /* 1 mV/bit */
      u8 in[14];        /* Register value */
      u8 in_min[14];          /* Register value */
      u8 in_max[14];          /* Register value */
      u8 in_crit[3];          /* Register value */
      u8 in_status[14]; /* Register value */
      u16 in_alarms;          /* Register values, combined, masked */
      u8 vid_conf;            /* Configuration register value */
      u8 vrm;
      u8 vid;                 /* Register value */

      s8 temp[3];       /* Register value */
      s8 temp_min[3];         /* Register value */
      s8 temp_max[3];         /* Register value */
      s8 temp_crit[3];  /* Register value */
      u8 temp_status[3];      /* Register value */
      u8 temp_alarms;         /* Register value, masked */
};

/*
 * Functions declaration
 */

static int pc87360_probe(struct platform_device *pdev);
static int __devexit pc87360_remove(struct platform_device *pdev);

static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
                        u8 reg);
static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
                        u8 reg, u8 value);
static void pc87360_init_device(struct platform_device *pdev,
                        int use_thermistors);
static struct pc87360_data *pc87360_update_device(struct device *dev);

/*
 * Driver data
 */

static struct platform_driver pc87360_driver = {
      .driver = {
            .owner      = THIS_MODULE,
            .name = "pc87360",
      },
      .probe            = pc87360_probe,
      .remove           = __devexit_p(pc87360_remove),
};

/*
 * Sysfs stuff
 */

static ssize_t show_fan_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
                   FAN_DIV_FROM_REG(data->fan_status[attr->index])));
}
static ssize_t show_fan_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
                   FAN_DIV_FROM_REG(data->fan_status[attr->index])));
}
static ssize_t show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n",
                   FAN_DIV_FROM_REG(data->fan_status[attr->index]));
}
static ssize_t show_fan_status(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n",
                   FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
}
static ssize_t set_fan_min(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long fan_min = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[attr->index]));

      /* If it wouldn't fit, change clock divisor */
      while (fan_min > 255
          && (data->fan_status[attr->index] & 0x60) != 0x60) {
            fan_min >>= 1;
            data->fan[attr->index] >>= 1;
            data->fan_status[attr->index] += 0x20;
      }
      data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
      pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(attr->index),
                      data->fan_min[attr->index]);

      /* Write new divider, preserve alarm bits */
      pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(attr->index),
                      data->fan_status[attr->index] & 0xF9);
      mutex_unlock(&data->update_lock);

      return count;
}

static struct sensor_device_attribute fan_input[] = {
      SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
      SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
      SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
};
static struct sensor_device_attribute fan_status[] = {
      SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
      SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
      SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
};
static struct sensor_device_attribute fan_div[] = {
      SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
      SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
      SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
};
static struct sensor_device_attribute fan_min[] = {
      SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
      SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
      SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
};

#define FAN_UNIT_ATTRS(X)     \
      &fan_input[X].dev_attr.attr,  \
      &fan_status[X].dev_attr.attr, \
      &fan_div[X].dev_attr.attr,    \
      &fan_min[X].dev_attr.attr

static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n",
                   PWM_FROM_REG(data->pwm[attr->index],
                            FAN_CONFIG_INVERT(data->fan_conf,
                                          attr->index)));
}
static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long val = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      data->pwm[attr->index] = PWM_TO_REG(val,
                        FAN_CONFIG_INVERT(data->fan_conf, attr->index));
      pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
                      data->pwm[attr->index]);
      mutex_unlock(&data->update_lock);
      return count;
}

static struct sensor_device_attribute pwm[] = {
      SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
      SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
      SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
};

static struct attribute * pc8736x_fan_attr_array[] = {
      FAN_UNIT_ATTRS(0),
      FAN_UNIT_ATTRS(1),
      FAN_UNIT_ATTRS(2),
      &pwm[0].dev_attr.attr,
      &pwm[1].dev_attr.attr,
      &pwm[2].dev_attr.attr,
      NULL
};
static const struct attribute_group pc8736x_fan_group = {
      .attrs = pc8736x_fan_attr_array,
};

static ssize_t show_in_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
                   data->in_vref));
}
static ssize_t show_in_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
                   data->in_vref));
}
static ssize_t show_in_max(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
                   data->in_vref));
}
static ssize_t show_in_status(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", data->in_status[attr->index]);
}
static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long val = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
      pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
                      data->in_min[attr->index]);
      mutex_unlock(&data->update_lock);
      return count;
}
static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long val = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      data->in_max[attr->index] = IN_TO_REG(val,
                         data->in_vref);
      pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
                      data->in_max[attr->index]);
      mutex_unlock(&data->update_lock);
      return count;
}

static struct sensor_device_attribute in_input[] = {
      SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
      SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
      SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
      SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
      SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
      SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
      SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
      SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
      SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
      SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
      SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
};
static struct sensor_device_attribute in_status[] = {
      SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
      SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
      SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
      SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
      SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
      SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
      SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
      SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
      SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
      SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
      SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
};
static struct sensor_device_attribute in_min[] = {
      SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
      SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
      SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
      SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
      SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
      SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
      SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
      SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
      SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
      SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
      SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
};
static struct sensor_device_attribute in_max[] = {
      SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
      SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
      SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
      SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
      SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
      SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
      SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
      SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
      SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
      SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
      SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
};

#define VIN_UNIT_ATTRS(X) \
      &in_input[X].dev_attr.attr,   \
      &in_status[X].dev_attr.attr,  \
      &in_min[X].dev_attr.attr,     \
      &in_max[X].dev_attr.attr

static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
{
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
}
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);

static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
{
      struct pc87360_data *data = dev_get_drvdata(dev);
      return sprintf(buf, "%u\n", data->vrm);
}
static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
      struct pc87360_data *data = dev_get_drvdata(dev);
      data->vrm = simple_strtoul(buf, NULL, 10);
      return count;
}
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);

static ssize_t show_in_alarms(struct device *dev, struct device_attribute *attr, char *buf)
{
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", data->in_alarms);
}
static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);

static struct attribute *pc8736x_vin_attr_array[] = {
      VIN_UNIT_ATTRS(0),
      VIN_UNIT_ATTRS(1),
      VIN_UNIT_ATTRS(2),
      VIN_UNIT_ATTRS(3),
      VIN_UNIT_ATTRS(4),
      VIN_UNIT_ATTRS(5),
      VIN_UNIT_ATTRS(6),
      VIN_UNIT_ATTRS(7),
      VIN_UNIT_ATTRS(8),
      VIN_UNIT_ATTRS(9),
      VIN_UNIT_ATTRS(10),
      &dev_attr_cpu0_vid.attr,
      &dev_attr_vrm.attr,
      &dev_attr_alarms_in.attr,
      NULL
};
static const struct attribute_group pc8736x_vin_group = {
      .attrs = pc8736x_vin_attr_array,
};

static ssize_t show_therm_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
                   data->in_vref));
}
static ssize_t show_therm_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
                   data->in_vref));
}
static ssize_t show_therm_max(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
                   data->in_vref));
}
static ssize_t show_therm_crit(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
                   data->in_vref));
}
static ssize_t show_therm_status(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", data->in_status[attr->index]);
}
static ssize_t set_therm_min(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long val = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
      pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
                      data->in_min[attr->index]);
      mutex_unlock(&data->update_lock);
      return count;
}
static ssize_t set_therm_max(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long val = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
      pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
                      data->in_max[attr->index]);
      mutex_unlock(&data->update_lock);
      return count;
}
static ssize_t set_therm_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long val = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
      pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
                      data->in_crit[attr->index-11]);
      mutex_unlock(&data->update_lock);
      return count;
}

/* the +11 term below reflects the fact that VLM units 11,12,13 are
   used in the chip to measure voltage across the thermistors
*/
static struct sensor_device_attribute therm_input[] = {
      SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0+11),
      SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1+11),
      SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2+11),
};
static struct sensor_device_attribute therm_status[] = {
      SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0+11),
      SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1+11),
      SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2+11),
};
static struct sensor_device_attribute therm_min[] = {
      SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
                show_therm_min, set_therm_min, 0+11),
      SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
                show_therm_min, set_therm_min, 1+11),
      SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
                show_therm_min, set_therm_min, 2+11),
};
static struct sensor_device_attribute therm_max[] = {
      SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
                show_therm_max, set_therm_max, 0+11),
      SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
                show_therm_max, set_therm_max, 1+11),
      SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
                show_therm_max, set_therm_max, 2+11),
};
static struct sensor_device_attribute therm_crit[] = {
      SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
                show_therm_crit, set_therm_crit, 0+11),
      SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
                show_therm_crit, set_therm_crit, 1+11),
      SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
                show_therm_crit, set_therm_crit, 2+11),
};

#define THERM_UNIT_ATTRS(X) \
      &therm_input[X].dev_attr.attr,      \
      &therm_status[X].dev_attr.attr,     \
      &therm_min[X].dev_attr.attr,  \
      &therm_max[X].dev_attr.attr,  \
      &therm_crit[X].dev_attr.attr

static struct attribute * pc8736x_therm_attr_array[] = {
      THERM_UNIT_ATTRS(0),
      THERM_UNIT_ATTRS(1),
      THERM_UNIT_ATTRS(2),
      NULL
};
static const struct attribute_group pc8736x_therm_group = {
      .attrs = pc8736x_therm_attr_array,
};

static ssize_t show_temp_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
}
static ssize_t show_temp_min(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
}
static ssize_t show_temp_max(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
}
static ssize_t show_temp_crit(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[attr->index]));
}
static ssize_t show_temp_status(struct device *dev, struct device_attribute *devattr, char *buf)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%d\n", data->temp_status[attr->index]);
}
static ssize_t set_temp_min(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long val = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      data->temp_min[attr->index] = TEMP_TO_REG(val);
      pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
                      data->temp_min[attr->index]);
      mutex_unlock(&data->update_lock);
      return count;
}
static ssize_t set_temp_max(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long val = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      data->temp_max[attr->index] = TEMP_TO_REG(val);
      pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
                      data->temp_max[attr->index]);
      mutex_unlock(&data->update_lock);
      return count;
}
static ssize_t set_temp_crit(struct device *dev, struct device_attribute *devattr, const char *buf,
      size_t count)
{
      struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
      struct pc87360_data *data = dev_get_drvdata(dev);
      long val = simple_strtol(buf, NULL, 10);

      mutex_lock(&data->update_lock);
      data->temp_crit[attr->index] = TEMP_TO_REG(val);
      pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
                      data->temp_crit[attr->index]);
      mutex_unlock(&data->update_lock);
      return count;
}

static struct sensor_device_attribute temp_input[] = {
      SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
      SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
      SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
};
static struct sensor_device_attribute temp_status[] = {
      SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
      SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
      SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
};
static struct sensor_device_attribute temp_min[] = {
      SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
                show_temp_min, set_temp_min, 0),
      SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
                show_temp_min, set_temp_min, 1),
      SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
                show_temp_min, set_temp_min, 2),
};
static struct sensor_device_attribute temp_max[] = {
      SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
                show_temp_max, set_temp_max, 0),
      SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
                show_temp_max, set_temp_max, 1),
      SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
                show_temp_max, set_temp_max, 2),
};
static struct sensor_device_attribute temp_crit[] = {
      SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
                show_temp_crit, set_temp_crit, 0),
      SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
                show_temp_crit, set_temp_crit, 1),
      SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
                show_temp_crit, set_temp_crit, 2),
};

static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *attr, char *buf)
{
      struct pc87360_data *data = pc87360_update_device(dev);
      return sprintf(buf, "%u\n", data->temp_alarms);
}
static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);

#define TEMP_UNIT_ATTRS(X) \
      &temp_input[X].dev_attr.attr, \
      &temp_status[X].dev_attr.attr,      \
      &temp_min[X].dev_attr.attr,   \
      &temp_max[X].dev_attr.attr,   \
      &temp_crit[X].dev_attr.attr

static struct attribute * pc8736x_temp_attr_array[] = {
      TEMP_UNIT_ATTRS(0),
      TEMP_UNIT_ATTRS(1),
      TEMP_UNIT_ATTRS(2),
      /* include the few miscellaneous atts here */
      &dev_attr_alarms_temp.attr,
      NULL
};
static const struct attribute_group pc8736x_temp_group = {
      .attrs = pc8736x_temp_attr_array,
};

static ssize_t show_name(struct device *dev, struct device_attribute
                   *devattr, char *buf)
{
      struct pc87360_data *data = dev_get_drvdata(dev);
      return sprintf(buf, "%s\n", data->name);
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);

/*
 * Device detection, registration and update
 */

static int __init pc87360_find(int sioaddr, u8 *devid, unsigned short *addresses)
{
      u16 val;
      int i;
      int nrdev; /* logical device count */

      /* No superio_enter */

      /* Identify device */
      val = superio_inb(sioaddr, DEVID);
      switch (val) {
      case 0xE1: /* PC87360 */
      case 0xE8: /* PC87363 */
      case 0xE4: /* PC87364 */
            nrdev = 1;
            break;
      case 0xE5: /* PC87365 */
      case 0xE9: /* PC87366 */
            nrdev = 3;
            break;
      default:
            superio_exit(sioaddr);
            return -ENODEV;
      }
      /* Remember the device id */
      *devid = val;

      for (i = 0; i < nrdev; i++) {
            /* select logical device */
            superio_outb(sioaddr, DEV, logdev[i]);

            val = superio_inb(sioaddr, ACT);
            if (!(val & 0x01)) {
                  printk(KERN_INFO "pc87360: Device 0x%02x not "
                         "activated\n", logdev[i]);
                  continue;
            }

            val = (superio_inb(sioaddr, BASE) << 8)
                | superio_inb(sioaddr, BASE + 1);
            if (!val) {
                  printk(KERN_INFO "pc87360: Base address not set for "
                         "device 0x%02x\n", logdev[i]);
                  continue;
            }

            addresses[i] = val;

            if (i==0) { /* Fans */
                  confreg[0] = superio_inb(sioaddr, 0xF0);
                  confreg[1] = superio_inb(sioaddr, 0xF1);

#ifdef DEBUG
                  printk(KERN_DEBUG "pc87360: Fan 1: mon=%d "
                         "ctrl=%d inv=%d\n", (confreg[0]>>2)&1,
                         (confreg[0]>>3)&1, (confreg[0]>>4)&1);
                  printk(KERN_DEBUG "pc87360: Fan 2: mon=%d "
                         "ctrl=%d inv=%d\n", (confreg[0]>>5)&1,
                         (confreg[0]>>6)&1, (confreg[0]>>7)&1);
                  printk(KERN_DEBUG "pc87360: Fan 3: mon=%d "
                         "ctrl=%d inv=%d\n", confreg[1]&1,
                         (confreg[1]>>1)&1, (confreg[1]>>2)&1);
#endif
            } else if (i==1) { /* Voltages */
                  /* Are we using thermistors? */
                  if (*devid == 0xE9) { /* PC87366 */
                        /* These registers are not logical-device
                           specific, just that we won't need them if
                           we don't use the VLM device */
                        confreg[2] = superio_inb(sioaddr, 0x2B);
                        confreg[3] = superio_inb(sioaddr, 0x25);

                        if (confreg[2] & 0x40) {
                              printk(KERN_INFO "pc87360: Using "
                                     "thermistors for temperature "
                                     "monitoring\n");
                        }
                        if (confreg[3] & 0xE0) {
                              printk(KERN_INFO "pc87360: VID "
                                     "inputs routed (mode %u)\n",
                                     confreg[3] >> 5);
                        }
                  }
            }
      }

      superio_exit(sioaddr);
      return 0;
}

static int __devinit pc87360_probe(struct platform_device *pdev)
{
      int i;
      struct pc87360_data *data;
      int err = 0;
      const char *name = "pc87360";
      int use_thermistors = 0;
      struct device *dev = &pdev->dev;

      if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
            return -ENOMEM;

      data->fannr = 2;
      data->innr = 0;
      data->tempnr = 0;

      switch (devid) {
      case 0xe8:
            name = "pc87363";
            break;
      case 0xe4:
            name = "pc87364";
            data->fannr = 3;
            break;
      case 0xe5:
            name = "pc87365";
            data->fannr = extra_isa[0] ? 3 : 0;
            data->innr = extra_isa[1] ? 11 : 0;
            data->tempnr = extra_isa[2] ? 2 : 0;
            break;
      case 0xe9:
            name = "pc87366";
            data->fannr = extra_isa[0] ? 3 : 0;
            data->innr = extra_isa[1] ? 14 : 0;
            data->tempnr = extra_isa[2] ? 3 : 0;
            break;
      }

      data->name = name;
      data->valid = 0;
      mutex_init(&data->lock);
      mutex_init(&data->update_lock);
      platform_set_drvdata(pdev, data);

      for (i = 0; i < 3; i++) {
            if (((data->address[i] = extra_isa[i]))
             && !request_region(extra_isa[i], PC87360_EXTENT,
                            pc87360_driver.driver.name)) {
                  dev_err(dev, "Region 0x%x-0x%x already "
                        "in use!\n", extra_isa[i],
                        extra_isa[i]+PC87360_EXTENT-1);
                  for (i--; i >= 0; i--)
                        release_region(extra_isa[i], PC87360_EXTENT);
                  err = -EBUSY;
                  goto ERROR1;
            }
      }

      /* Retrieve the fans configuration from Super-I/O space */
      if (data->fannr)
            data->fan_conf = confreg[0] | (confreg[1] << 8);

      /* Use the correct reference voltage
         Unless both the VLM and the TMS logical devices agree to
         use an external Vref, the internal one is used. */
      if (data->innr) {
            i = pc87360_read_value(data, LD_IN, NO_BANK,
                               PC87365_REG_IN_CONFIG);
            if (data->tempnr) {
                  i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
                                    PC87365_REG_TEMP_CONFIG);
            }
            data->in_vref = (i&0x02) ? 3025 : 2966;
            dev_dbg(dev, "Using %s reference voltage\n",
                  (i&0x02) ? "external" : "internal");

            data->vid_conf = confreg[3];
            data->vrm = vid_which_vrm();
      }

      /* Fan clock dividers may be needed before any data is read */
      for (i = 0; i < data->fannr; i++) {
            if (FAN_CONFIG_MONITOR(data->fan_conf, i))
                  data->fan_status[i] = pc87360_read_value(data,
                                    LD_FAN, NO_BANK,
                                    PC87360_REG_FAN_STATUS(i));
      }

      if (init > 0) {
            if (devid == 0xe9 && data->address[1]) /* PC87366 */
                  use_thermistors = confreg[2] & 0x40;

            pc87360_init_device(pdev, use_thermistors);
      }

      /* Register all-or-nothing sysfs groups */

      if (data->innr &&
          (err = sysfs_create_group(&dev->kobj,
                              &pc8736x_vin_group)))
            goto ERROR3;

      if (data->innr == 14 &&
          (err = sysfs_create_group(&dev->kobj,
                              &pc8736x_therm_group)))
            goto ERROR3;

      /* create device attr-files for varying sysfs groups */

      if (data->tempnr) {
            for (i = 0; i < data->tempnr; i++) {
                  if ((err = device_create_file(dev,
                              &temp_input[i].dev_attr))
                      || (err = device_create_file(dev,
                              &temp_min[i].dev_attr))
                      || (err = device_create_file(dev,
                              &temp_max[i].dev_attr))
                      || (err = device_create_file(dev,
                              &temp_crit[i].dev_attr))
                      || (err = device_create_file(dev,
                              &temp_status[i].dev_attr)))
                        goto ERROR3;
            }
            if ((err = device_create_file(dev, &dev_attr_alarms_temp)))
                  goto ERROR3;
      }

      for (i = 0; i < data->fannr; i++) {
            if (FAN_CONFIG_MONITOR(data->fan_conf, i)
                && ((err = device_create_file(dev,
                              &fan_input[i].dev_attr))
                  || (err = device_create_file(dev,
                              &fan_min[i].dev_attr))
                  || (err = device_create_file(dev,
                              &fan_div[i].dev_attr))
                  || (err = device_create_file(dev,
                              &fan_status[i].dev_attr))))
                  goto ERROR3;

            if (FAN_CONFIG_CONTROL(data->fan_conf, i)
                && (err = device_create_file(dev, &pwm[i].dev_attr)))
                  goto ERROR3;
      }

      if ((err = device_create_file(dev, &dev_attr_name)))
            goto ERROR3;

      data->hwmon_dev = hwmon_device_register(dev);
      if (IS_ERR(data->hwmon_dev)) {
            err = PTR_ERR(data->hwmon_dev);
            goto ERROR3;
      }
      return 0;

ERROR3:
      device_remove_file(dev, &dev_attr_name);
      /* can still remove groups whose members were added individually */
      sysfs_remove_group(&dev->kobj, &pc8736x_temp_group);
      sysfs_remove_group(&dev->kobj, &pc8736x_fan_group);
      sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
      sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
      for (i = 0; i < 3; i++) {
            if (data->address[i]) {
                  release_region(data->address[i], PC87360_EXTENT);
            }
      }
ERROR1:
      kfree(data);
      return err;
}

static int __devexit pc87360_remove(struct platform_device *pdev)
{
      struct pc87360_data *data = platform_get_drvdata(pdev);
      int i;

      hwmon_device_unregister(data->hwmon_dev);

      device_remove_file(&pdev->dev, &dev_attr_name);
      sysfs_remove_group(&pdev->dev.kobj, &pc8736x_temp_group);
      sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_group);
      sysfs_remove_group(&pdev->dev.kobj, &pc8736x_therm_group);
      sysfs_remove_group(&pdev->dev.kobj, &pc8736x_vin_group);

      for (i = 0; i < 3; i++) {
            if (data->address[i]) {
                  release_region(data->address[i], PC87360_EXTENT);
            }
      }
      kfree(data);

      return 0;
}

/* ldi is the logical device index
   bank is for voltages and temperatures only */
static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
                        u8 reg)
{
      int res;

      mutex_lock(&(data->lock));
      if (bank != NO_BANK)
            outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
      res = inb_p(data->address[ldi] + reg);
      mutex_unlock(&(data->lock));

      return res;
}

static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
                        u8 reg, u8 value)
{
      mutex_lock(&(data->lock));
      if (bank != NO_BANK)
            outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
      outb_p(value, data->address[ldi] + reg);
      mutex_unlock(&(data->lock));
}

static void pc87360_init_device(struct platform_device *pdev,
                        int use_thermistors)
{
      struct pc87360_data *data = platform_get_drvdata(pdev);
      int i, nr;
      const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
      const u8 init_temp[3] = { 2, 2, 1 };
      u8 reg;

      if (init >= 2 && data->innr) {
            reg = pc87360_read_value(data, LD_IN, NO_BANK,
                               PC87365_REG_IN_CONVRATE);
            dev_info(&pdev->dev, "VLM conversion set to "
                   "1s period, 160us delay\n");
            pc87360_write_value(data, LD_IN, NO_BANK,
                            PC87365_REG_IN_CONVRATE,
                            (reg & 0xC0) | 0x11);
      }

      nr = data->innr < 11 ? data->innr : 11;
      for (i = 0; i < nr; i++) {
            if (init >= init_in[i]) {
                  /* Forcibly enable voltage channel */
                  reg = pc87360_read_value(data, LD_IN, i,
                                     PC87365_REG_IN_STATUS);
                  if (!(reg & 0x01)) {
                        dev_dbg(&pdev->dev, "Forcibly "
                              "enabling in%d\n", i);
                        pc87360_write_value(data, LD_IN, i,
                                        PC87365_REG_IN_STATUS,
                                        (reg & 0x68) | 0x87);
                  }
            }
      }

      /* We can't blindly trust the Super-I/O space configuration bit,
         most BIOS won't set it properly */
      for (i = 11; i < data->innr; i++) {
            reg = pc87360_read_value(data, LD_IN, i,
                               PC87365_REG_TEMP_STATUS);
            use_thermistors = use_thermistors || (reg & 0x01);
      }

      i = use_thermistors ? 2 : 0;
      for (; i < data->tempnr; i++) {
            if (init >= init_temp[i]) {
                  /* Forcibly enable temperature channel */
                  reg = pc87360_read_value(data, LD_TEMP, i,
                                     PC87365_REG_TEMP_STATUS);
                  if (!(reg & 0x01)) {
                        dev_dbg(&pdev->dev, "Forcibly "
                              "enabling temp%d\n", i+1);
                        pc87360_write_value(data, LD_TEMP, i,
                                        PC87365_REG_TEMP_STATUS,
                                        0xCF);
                  }
            }
      }

      if (use_thermistors) {
            for (i = 11; i < data->innr; i++) {
                  if (init >= init_in[i]) {
                        /* The pin may already be used by thermal
                           diodes */
                        reg = pc87360_read_value(data, LD_TEMP,
                              (i-11)/2, PC87365_REG_TEMP_STATUS);
                        if (reg & 0x01) {
                              dev_dbg(&pdev->dev, "Skipping "
                                    "temp%d, pin already in use "
                                    "by temp%d\n", i-7, (i-11)/2);
                              continue;
                        }

                        /* Forcibly enable thermistor channel */
                        reg = pc87360_read_value(data, LD_IN, i,
                                           PC87365_REG_IN_STATUS);
                        if (!(reg & 0x01)) {
                              dev_dbg(&pdev->dev, "Forcibly "
                                    "enabling temp%d\n", i-7);
                              pc87360_write_value(data, LD_IN, i,
                                    PC87365_REG_TEMP_STATUS,
                                    (reg & 0x60) | 0x8F);
                        }
                  }
            }
      }

      if (data->innr) {
            reg = pc87360_read_value(data, LD_IN, NO_BANK,
                               PC87365_REG_IN_CONFIG);
            if (reg & 0x01) {
                  dev_dbg(&pdev->dev, "Forcibly "
                        "enabling monitoring (VLM)\n");
                  pc87360_write_value(data, LD_IN, NO_BANK,
                                  PC87365_REG_IN_CONFIG,
                                  reg & 0xFE);
            }
      }

      if (data->tempnr) {
            reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
                               PC87365_REG_TEMP_CONFIG);
            if (reg & 0x01) {
                  dev_dbg(&pdev->dev, "Forcibly enabling "
                        "monitoring (TMS)\n");
                  pc87360_write_value(data, LD_TEMP, NO_BANK,
                                  PC87365_REG_TEMP_CONFIG,
                                  reg & 0xFE);
            }

            if (init >= 2) {
                  /* Chip config as documented by National Semi. */
                  pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
                  /* We voluntarily omit the bank here, in case the
                     sequence itself matters. It shouldn't be a problem,
                     since nobody else is supposed to access the
                     device at that point. */
                  pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
                  pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
                  pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
                  pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
            }
      }
}

static void pc87360_autodiv(struct device *dev, int nr)
{
      struct pc87360_data *data = dev_get_drvdata(dev);
      u8 old_min = data->fan_min[nr];

      /* Increase clock divider if needed and possible */
      if ((data->fan_status[nr] & 0x04) /* overflow flag */
       || (data->fan[nr] >= 224)) { /* next to overflow */
            if ((data->fan_status[nr] & 0x60) != 0x60) {
                  data->fan_status[nr] += 0x20;
                  data->fan_min[nr] >>= 1;
                  data->fan[nr] >>= 1;
                  dev_dbg(dev, "Increasing "
                        "clock divider to %d for fan %d\n",
                        FAN_DIV_FROM_REG(data->fan_status[nr]), nr+1);
            }
      } else {
            /* Decrease clock divider if possible */
            while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
             && data->fan[nr] < 85 /* bad accuracy */
             && (data->fan_status[nr] & 0x60) != 0x00) {
                  data->fan_status[nr] -= 0x20;
                  data->fan_min[nr] <<= 1;
                  data->fan[nr] <<= 1;
                  dev_dbg(dev, "Decreasing "
                        "clock divider to %d for fan %d\n",
                        FAN_DIV_FROM_REG(data->fan_status[nr]),
                        nr+1);
            }
      }

      /* Write new fan min if it changed */
      if (old_min != data->fan_min[nr]) {
            pc87360_write_value(data, LD_FAN, NO_BANK,
                            PC87360_REG_FAN_MIN(nr),
                            data->fan_min[nr]);
      }
}

static struct pc87360_data *pc87360_update_device(struct device *dev)
{
      struct pc87360_data *data = dev_get_drvdata(dev);
      u8 i;

      mutex_lock(&data->update_lock);

      if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
            dev_dbg(dev, "Data update\n");

            /* Fans */
            for (i = 0; i < data->fannr; i++) {
                  if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
                        data->fan_status[i] =
                              pc87360_read_value(data, LD_FAN,
                              NO_BANK, PC87360_REG_FAN_STATUS(i));
                        data->fan[i] = pc87360_read_value(data, LD_FAN,
                                     NO_BANK, PC87360_REG_FAN(i));
                        data->fan_min[i] = pc87360_read_value(data,
                                       LD_FAN, NO_BANK,
                                       PC87360_REG_FAN_MIN(i));
                        /* Change clock divider if needed */
                        pc87360_autodiv(dev, i);
                        /* Clear bits and write new divider */
                        pc87360_write_value(data, LD_FAN, NO_BANK,
                                        PC87360_REG_FAN_STATUS(i),
                                        data->fan_status[i]);
                  }
                  if (FAN_CONFIG_CONTROL(data->fan_conf, i))
                        data->pwm[i] = pc87360_read_value(data, LD_FAN,
                                     NO_BANK, PC87360_REG_PWM(i));
            }

            /* Voltages */
            for (i = 0; i < data->innr; i++) {
                  data->in_status[i] = pc87360_read_value(data, LD_IN, i,
                                   PC87365_REG_IN_STATUS);
                  /* Clear bits */
                  pc87360_write_value(data, LD_IN, i,
                                  PC87365_REG_IN_STATUS,
                                  data->in_status[i]);
                  if ((data->in_status[i] & 0x81) == 0x81) {
                        data->in[i] = pc87360_read_value(data, LD_IN,
                                    i, PC87365_REG_IN);
                  }
                  if (data->in_status[i] & 0x01) {
                        data->in_min[i] = pc87360_read_value(data,
                                      LD_IN, i,
                                      PC87365_REG_IN_MIN);
                        data->in_max[i] = pc87360_read_value(data,
                                      LD_IN, i,
                                      PC87365_REG_IN_MAX);
                        if (i >= 11)
                              data->in_crit[i-11] =
                                    pc87360_read_value(data, LD_IN,
                                    i, PC87365_REG_TEMP_CRIT);
                  }
            }
            if (data->innr) {
                  data->in_alarms = pc87360_read_value(data, LD_IN,
                                NO_BANK, PC87365_REG_IN_ALARMS1)
                              | ((pc87360_read_value(data, LD_IN,
                                  NO_BANK, PC87365_REG_IN_ALARMS2)
                                  & 0x07) << 8);
                  data->vid = (data->vid_conf & 0xE0) ?
                            pc87360_read_value(data, LD_IN,
                            NO_BANK, PC87365_REG_VID) : 0x1F;
            }

            /* Temperatures */
            for (i = 0; i < data->tempnr; i++) {
                  data->temp_status[i] = pc87360_read_value(data,
                                     LD_TEMP, i,
                                     PC87365_REG_TEMP_STATUS);
                  /* Clear bits */
                  pc87360_write_value(data, LD_TEMP, i,
                                  PC87365_REG_TEMP_STATUS,
                                  data->temp_status[i]);
                  if ((data->temp_status[i] & 0x81) == 0x81) {
                        data->temp[i] = pc87360_read_value(data,
                                    LD_TEMP, i,
                                    PC87365_REG_TEMP);
                  }
                  if (data->temp_status[i] & 0x01) {
                        data->temp_min[i] = pc87360_read_value(data,
                                        LD_TEMP, i,
                                        PC87365_REG_TEMP_MIN);
                        data->temp_max[i] = pc87360_read_value(data,
                                        LD_TEMP, i,
                                        PC87365_REG_TEMP_MAX);
                        data->temp_crit[i] = pc87360_read_value(data,
                                         LD_TEMP, i,
                                         PC87365_REG_TEMP_CRIT);
                  }
            }
            if (data->tempnr) {
                  data->temp_alarms = pc87360_read_value(data, LD_TEMP,
                                  NO_BANK, PC87365_REG_TEMP_ALARMS)
                                  & 0x3F;
            }

            data->last_updated = jiffies;
            data->valid = 1;
      }

      mutex_unlock(&data->update_lock);

      return data;
}

static int __init pc87360_device_add(unsigned short address)
{
      struct resource res = {
            .name = "pc87360",
            .flags      = IORESOURCE_IO,
      };
      int err, i;

      pdev = platform_device_alloc("pc87360", address);
      if (!pdev) {
            err = -ENOMEM;
            printk(KERN_ERR "pc87360: Device allocation failed\n");
            goto exit;
      }

      for (i = 0; i < 3; i++) {
            if (!extra_isa[i])
                  continue;
            res.start = extra_isa[i];
            res.end = extra_isa[i] + PC87360_EXTENT - 1;
            err = platform_device_add_resources(pdev, &res, 1);
            if (err) {
                  printk(KERN_ERR "pc87360: Device resource[%d] "
                         "addition failed (%d)\n", i, err);
                  goto exit_device_put;
            }
      }

      err = platform_device_add(pdev);
      if (err) {
            printk(KERN_ERR "pc87360: 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 pc87360_init(void)
{
      int err, i;
      unsigned short address = 0;

      if (pc87360_find(0x2e, &devid, extra_isa)
       && pc87360_find(0x4e, &devid, extra_isa)) {
            printk(KERN_WARNING "pc87360: PC8736x not detected, "
                   "module not inserted.\n");
            return -ENODEV;
      }

      /* Arbitrarily pick one of the addresses */
      for (i = 0; i < 3; i++) {
            if (extra_isa[i] != 0x0000) {
                  address = extra_isa[i];
                  break;
            }
      }

      if (address == 0x0000) {
            printk(KERN_WARNING "pc87360: No active logical device, "
                   "module not inserted.\n");
            return -ENODEV;
      }

      err = platform_driver_register(&pc87360_driver);
      if (err)
            goto exit;

      /* Sets global pdev as a side effect */
      err = pc87360_device_add(address);
      if (err)
            goto exit_driver;

      return 0;

 exit_driver:
      platform_driver_unregister(&pc87360_driver);
 exit:
      return err;
}

static void __exit pc87360_exit(void)
{
      platform_device_unregister(pdev);
      platform_driver_unregister(&pc87360_driver);
}


MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
MODULE_DESCRIPTION("PC8736x hardware monitor");
MODULE_LICENSE("GPL");

module_init(pc87360_init);
module_exit(pc87360_exit);

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