linux/drivers/hwmon/pc87360.c
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   1/*
   2 *  pc87360.c - Part of lm_sensors, Linux kernel modules
   3 *              for hardware monitoring
   4 *  Copyright (C) 2004, 2007 Jean Delvare <khali@linux-fr.org>
   5 *
   6 *  Copied from smsc47m1.c:
   7 *  Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
   8 *
   9 *  This program is free software; you can redistribute it and/or modify
  10 *  it under the terms of the GNU General Public License as published by
  11 *  the Free Software Foundation; either version 2 of the License, or
  12 *  (at your option) any later version.
  13 *
  14 *  This program is distributed in the hope that it will be useful,
  15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 *  GNU General Public License for more details.
  18 *
  19 *  You should have received a copy of the GNU General Public License
  20 *  along with this program; if not, write to the Free Software
  21 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 *
  23 *  Supports the following chips:
  24 *
  25 *  Chip        #vin    #fan    #pwm    #temp   devid
  26 *  PC87360     -       2       2       -       0xE1
  27 *  PC87363     -       2       2       -       0xE8
  28 *  PC87364     -       3       3       -       0xE4
  29 *  PC87365     11      3       3       2       0xE5
  30 *  PC87366     11      3       3       3-4     0xE9
  31 *
  32 *  This driver assumes that no more than one chip is present, and one of
  33 *  the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
  34 */
  35
  36#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  37
  38#include <linux/module.h>
  39#include <linux/init.h>
  40#include <linux/slab.h>
  41#include <linux/jiffies.h>
  42#include <linux/platform_device.h>
  43#include <linux/hwmon.h>
  44#include <linux/hwmon-sysfs.h>
  45#include <linux/hwmon-vid.h>
  46#include <linux/err.h>
  47#include <linux/mutex.h>
  48#include <linux/acpi.h>
  49#include <linux/io.h>
  50
  51static u8 devid;
  52static struct platform_device *pdev;
  53static unsigned short extra_isa[3];
  54static u8 confreg[4];
  55
  56static int init = 1;
  57module_param(init, int, 0);
  58MODULE_PARM_DESC(init,
  59"Chip initialization level:\n"
  60" 0: None\n"
  61"*1: Forcibly enable internal voltage and temperature channels, except in9\n"
  62" 2: Forcibly enable all voltage and temperature channels, except in9\n"
  63" 3: Forcibly enable all voltage and temperature channels, including in9");
  64
  65static unsigned short force_id;
  66module_param(force_id, ushort, 0);
  67MODULE_PARM_DESC(force_id, "Override the detected device ID");
  68
  69/*
  70 * Super-I/O registers and operations
  71 */
  72
  73#define DEV     0x07    /* Register: Logical device select */
  74#define DEVID   0x20    /* Register: Device ID */
  75#define ACT     0x30    /* Register: Device activation */
  76#define BASE    0x60    /* Register: Base address */
  77
  78#define FSCM    0x09    /* Logical device: fans */
  79#define VLM     0x0d    /* Logical device: voltages */
  80#define TMS     0x0e    /* Logical device: temperatures */
  81#define LDNI_MAX 3
  82static const u8 logdev[LDNI_MAX] = { FSCM, VLM, TMS };
  83
  84#define LD_FAN          0
  85#define LD_IN           1
  86#define LD_TEMP         2
  87
  88static inline void superio_outb(int sioaddr, int reg, int val)
  89{
  90        outb(reg, sioaddr);
  91        outb(val, sioaddr + 1);
  92}
  93
  94static inline int superio_inb(int sioaddr, int reg)
  95{
  96        outb(reg, sioaddr);
  97        return inb(sioaddr + 1);
  98}
  99
 100static inline void superio_exit(int sioaddr)
 101{
 102        outb(0x02, sioaddr);
 103        outb(0x02, sioaddr + 1);
 104}
 105
 106/*
 107 * Logical devices
 108 */
 109
 110#define PC87360_EXTENT          0x10
 111#define PC87365_REG_BANK        0x09
 112#define NO_BANK                 0xff
 113
 114/*
 115 * Fan registers and conversions
 116 */
 117
 118/* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
 119#define PC87360_REG_PRESCALE(nr)        (0x00 + 2 * (nr))
 120#define PC87360_REG_PWM(nr)             (0x01 + 2 * (nr))
 121#define PC87360_REG_FAN_MIN(nr)         (0x06 + 3 * (nr))
 122#define PC87360_REG_FAN(nr)             (0x07 + 3 * (nr))
 123#define PC87360_REG_FAN_STATUS(nr)      (0x08 + 3 * (nr))
 124
 125#define FAN_FROM_REG(val, div)          ((val) == 0 ? 0 : \
 126                                         480000 / ((val) * (div)))
 127#define FAN_TO_REG(val, div)            ((val) <= 100 ? 0 : \
 128                                         480000 / ((val) * (div)))
 129#define FAN_DIV_FROM_REG(val)           (1 << (((val) >> 5) & 0x03))
 130#define FAN_STATUS_FROM_REG(val)        ((val) & 0x07)
 131
 132#define FAN_CONFIG_MONITOR(val, nr)     (((val) >> (2 + (nr) * 3)) & 1)
 133#define FAN_CONFIG_CONTROL(val, nr)     (((val) >> (3 + (nr) * 3)) & 1)
 134#define FAN_CONFIG_INVERT(val, nr)      (((val) >> (4 + (nr) * 3)) & 1)
 135
 136#define PWM_FROM_REG(val, inv)          ((inv) ? 255 - (val) : (val))
 137static inline u8 PWM_TO_REG(int val, int inv)
 138{
 139        if (inv)
 140                val = 255 - val;
 141        if (val < 0)
 142                return 0;
 143        if (val > 255)
 144                return 255;
 145        return val;
 146}
 147
 148/*
 149 * Voltage registers and conversions
 150 */
 151
 152#define PC87365_REG_IN_CONVRATE         0x07
 153#define PC87365_REG_IN_CONFIG           0x08
 154#define PC87365_REG_IN                  0x0B
 155#define PC87365_REG_IN_MIN              0x0D
 156#define PC87365_REG_IN_MAX              0x0C
 157#define PC87365_REG_IN_STATUS           0x0A
 158#define PC87365_REG_IN_ALARMS1          0x00
 159#define PC87365_REG_IN_ALARMS2          0x01
 160#define PC87365_REG_VID                 0x06
 161
 162#define IN_FROM_REG(val, ref)           (((val) * (ref) + 128) / 256)
 163#define IN_TO_REG(val, ref)             ((val) < 0 ? 0 : \
 164                                         (val) * 256 >= (ref) * 255 ? 255 : \
 165                                         ((val) * 256 + (ref) / 2) / (ref))
 166
 167/*
 168 * Temperature registers and conversions
 169 */
 170
 171#define PC87365_REG_TEMP_CONFIG         0x08
 172#define PC87365_REG_TEMP                0x0B
 173#define PC87365_REG_TEMP_MIN            0x0D
 174#define PC87365_REG_TEMP_MAX            0x0C
 175#define PC87365_REG_TEMP_CRIT           0x0E
 176#define PC87365_REG_TEMP_STATUS         0x0A
 177#define PC87365_REG_TEMP_ALARMS         0x00
 178
 179#define TEMP_FROM_REG(val)              ((val) * 1000)
 180#define TEMP_TO_REG(val)                ((val) < -55000 ? -55 : \
 181                                         (val) > 127000 ? 127 : \
 182                                         (val) < 0 ? ((val) - 500) / 1000 : \
 183                                         ((val) + 500) / 1000)
 184
 185/*
 186 * Device data
 187 */
 188
 189struct pc87360_data {
 190        const char *name;
 191        struct device *hwmon_dev;
 192        struct mutex lock;
 193        struct mutex update_lock;
 194        char valid;             /* !=0 if following fields are valid */
 195        unsigned long last_updated;     /* In jiffies */
 196
 197        int address[3];
 198
 199        u8 fannr, innr, tempnr;
 200
 201        u8 fan[3];              /* Register value */
 202        u8 fan_min[3];          /* Register value */
 203        u8 fan_status[3];       /* Register value */
 204        u8 pwm[3];              /* Register value */
 205        u16 fan_conf;           /* Configuration register values, combined */
 206
 207        u16 in_vref;            /* 1 mV/bit */
 208        u8 in[14];              /* Register value */
 209        u8 in_min[14];          /* Register value */
 210        u8 in_max[14];          /* Register value */
 211        u8 in_crit[3];          /* Register value */
 212        u8 in_status[14];       /* Register value */
 213        u16 in_alarms;          /* Register values, combined, masked */
 214        u8 vid_conf;            /* Configuration register value */
 215        u8 vrm;
 216        u8 vid;                 /* Register value */
 217
 218        s8 temp[3];             /* Register value */
 219        s8 temp_min[3];         /* Register value */
 220        s8 temp_max[3];         /* Register value */
 221        s8 temp_crit[3];        /* Register value */
 222        u8 temp_status[3];      /* Register value */
 223        u8 temp_alarms;         /* Register value, masked */
 224};
 225
 226/*
 227 * Functions declaration
 228 */
 229
 230static int pc87360_probe(struct platform_device *pdev);
 231static int pc87360_remove(struct platform_device *pdev);
 232
 233static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
 234                              u8 reg);
 235static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
 236                                u8 reg, u8 value);
 237static void pc87360_init_device(struct platform_device *pdev,
 238                                int use_thermistors);
 239static struct pc87360_data *pc87360_update_device(struct device *dev);
 240
 241/*
 242 * Driver data
 243 */
 244
 245static struct platform_driver pc87360_driver = {
 246        .driver = {
 247                .owner  = THIS_MODULE,
 248                .name   = "pc87360",
 249        },
 250        .probe          = pc87360_probe,
 251        .remove         = pc87360_remove,
 252};
 253
 254/*
 255 * Sysfs stuff
 256 */
 257
 258static ssize_t show_fan_input(struct device *dev,
 259                              struct device_attribute *devattr, char *buf)
 260{
 261        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 262        struct pc87360_data *data = pc87360_update_device(dev);
 263        return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
 264                       FAN_DIV_FROM_REG(data->fan_status[attr->index])));
 265}
 266static ssize_t show_fan_min(struct device *dev,
 267                            struct device_attribute *devattr, char *buf)
 268{
 269        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 270        struct pc87360_data *data = pc87360_update_device(dev);
 271        return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
 272                       FAN_DIV_FROM_REG(data->fan_status[attr->index])));
 273}
 274static ssize_t show_fan_div(struct device *dev,
 275                            struct device_attribute *devattr, char *buf)
 276{
 277        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 278        struct pc87360_data *data = pc87360_update_device(dev);
 279        return sprintf(buf, "%u\n",
 280                       FAN_DIV_FROM_REG(data->fan_status[attr->index]));
 281}
 282static ssize_t show_fan_status(struct device *dev,
 283                               struct device_attribute *devattr, char *buf)
 284{
 285        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 286        struct pc87360_data *data = pc87360_update_device(dev);
 287        return sprintf(buf, "%u\n",
 288                       FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
 289}
 290static ssize_t set_fan_min(struct device *dev,
 291                           struct device_attribute *devattr, const char *buf,
 292        size_t count)
 293{
 294        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 295        struct pc87360_data *data = dev_get_drvdata(dev);
 296        long fan_min;
 297        int err;
 298
 299        err = kstrtol(buf, 10, &fan_min);
 300        if (err)
 301                return err;
 302
 303        mutex_lock(&data->update_lock);
 304        fan_min = FAN_TO_REG(fan_min,
 305                             FAN_DIV_FROM_REG(data->fan_status[attr->index]));
 306
 307        /* If it wouldn't fit, change clock divisor */
 308        while (fan_min > 255
 309            && (data->fan_status[attr->index] & 0x60) != 0x60) {
 310                fan_min >>= 1;
 311                data->fan[attr->index] >>= 1;
 312                data->fan_status[attr->index] += 0x20;
 313        }
 314        data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
 315        pc87360_write_value(data, LD_FAN, NO_BANK,
 316                            PC87360_REG_FAN_MIN(attr->index),
 317                            data->fan_min[attr->index]);
 318
 319        /* Write new divider, preserve alarm bits */
 320        pc87360_write_value(data, LD_FAN, NO_BANK,
 321                            PC87360_REG_FAN_STATUS(attr->index),
 322                            data->fan_status[attr->index] & 0xF9);
 323        mutex_unlock(&data->update_lock);
 324
 325        return count;
 326}
 327
 328static struct sensor_device_attribute fan_input[] = {
 329        SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
 330        SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
 331        SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
 332};
 333static struct sensor_device_attribute fan_status[] = {
 334        SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
 335        SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
 336        SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
 337};
 338static struct sensor_device_attribute fan_div[] = {
 339        SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
 340        SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
 341        SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
 342};
 343static struct sensor_device_attribute fan_min[] = {
 344        SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
 345        SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
 346        SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
 347};
 348
 349#define FAN_UNIT_ATTRS(X)               \
 350{       &fan_input[X].dev_attr.attr,    \
 351        &fan_status[X].dev_attr.attr,   \
 352        &fan_div[X].dev_attr.attr,      \
 353        &fan_min[X].dev_attr.attr,      \
 354        NULL                            \
 355}
 356
 357static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
 358                        char *buf)
 359{
 360        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 361        struct pc87360_data *data = pc87360_update_device(dev);
 362        return sprintf(buf, "%u\n",
 363                       PWM_FROM_REG(data->pwm[attr->index],
 364                                    FAN_CONFIG_INVERT(data->fan_conf,
 365                                                      attr->index)));
 366}
 367static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
 368                       const char *buf, size_t count)
 369{
 370        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 371        struct pc87360_data *data = dev_get_drvdata(dev);
 372        long val;
 373        int err;
 374
 375        err = kstrtol(buf, 10, &val);
 376        if (err)
 377                return err;
 378
 379        mutex_lock(&data->update_lock);
 380        data->pwm[attr->index] = PWM_TO_REG(val,
 381                              FAN_CONFIG_INVERT(data->fan_conf, attr->index));
 382        pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
 383                            data->pwm[attr->index]);
 384        mutex_unlock(&data->update_lock);
 385        return count;
 386}
 387
 388static struct sensor_device_attribute pwm[] = {
 389        SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
 390        SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
 391        SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
 392};
 393
 394static struct attribute *pc8736x_fan_attr[][5] = {
 395        FAN_UNIT_ATTRS(0),
 396        FAN_UNIT_ATTRS(1),
 397        FAN_UNIT_ATTRS(2)
 398};
 399
 400static const struct attribute_group pc8736x_fan_attr_group[] = {
 401        { .attrs = pc8736x_fan_attr[0], },
 402        { .attrs = pc8736x_fan_attr[1], },
 403        { .attrs = pc8736x_fan_attr[2], },
 404};
 405
 406static ssize_t show_in_input(struct device *dev,
 407                             struct device_attribute *devattr, char *buf)
 408{
 409        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 410        struct pc87360_data *data = pc87360_update_device(dev);
 411        return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
 412                       data->in_vref));
 413}
 414static ssize_t show_in_min(struct device *dev,
 415                           struct device_attribute *devattr, char *buf)
 416{
 417        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 418        struct pc87360_data *data = pc87360_update_device(dev);
 419        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
 420                       data->in_vref));
 421}
 422static ssize_t show_in_max(struct device *dev,
 423                           struct device_attribute *devattr, char *buf)
 424{
 425        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 426        struct pc87360_data *data = pc87360_update_device(dev);
 427        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
 428                       data->in_vref));
 429}
 430static ssize_t show_in_status(struct device *dev,
 431                              struct device_attribute *devattr, char *buf)
 432{
 433        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 434        struct pc87360_data *data = pc87360_update_device(dev);
 435        return sprintf(buf, "%u\n", data->in_status[attr->index]);
 436}
 437static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr,
 438                          const char *buf, size_t count)
 439{
 440        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 441        struct pc87360_data *data = dev_get_drvdata(dev);
 442        long val;
 443        int err;
 444
 445        err = kstrtol(buf, 10, &val);
 446        if (err)
 447                return err;
 448
 449        mutex_lock(&data->update_lock);
 450        data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
 451        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
 452                            data->in_min[attr->index]);
 453        mutex_unlock(&data->update_lock);
 454        return count;
 455}
 456static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr,
 457                          const char *buf, size_t count)
 458{
 459        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 460        struct pc87360_data *data = dev_get_drvdata(dev);
 461        long val;
 462        int err;
 463
 464        err = kstrtol(buf, 10, &val);
 465        if (err)
 466                return err;
 467
 468        mutex_lock(&data->update_lock);
 469        data->in_max[attr->index] = IN_TO_REG(val,
 470                               data->in_vref);
 471        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
 472                            data->in_max[attr->index]);
 473        mutex_unlock(&data->update_lock);
 474        return count;
 475}
 476
 477static struct sensor_device_attribute in_input[] = {
 478        SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
 479        SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
 480        SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
 481        SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
 482        SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
 483        SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
 484        SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
 485        SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
 486        SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
 487        SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
 488        SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
 489};
 490static struct sensor_device_attribute in_status[] = {
 491        SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
 492        SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
 493        SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
 494        SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
 495        SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
 496        SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
 497        SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
 498        SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
 499        SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
 500        SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
 501        SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
 502};
 503static struct sensor_device_attribute in_min[] = {
 504        SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
 505        SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
 506        SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
 507        SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
 508        SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
 509        SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
 510        SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
 511        SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
 512        SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
 513        SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
 514        SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
 515};
 516static struct sensor_device_attribute in_max[] = {
 517        SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
 518        SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
 519        SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
 520        SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
 521        SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
 522        SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
 523        SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
 524        SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
 525        SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
 526        SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
 527        SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
 528};
 529
 530/* (temp & vin) channel status register alarm bits (pdf sec.11.5.12) */
 531#define CHAN_ALM_MIN    0x02    /* min limit crossed */
 532#define CHAN_ALM_MAX    0x04    /* max limit exceeded */
 533#define TEMP_ALM_CRIT   0x08    /* temp crit exceeded (temp only) */
 534
 535/*
 536 * show_in_min/max_alarm() reads data from the per-channel status
 537 * register (sec 11.5.12), not the vin event status registers (sec
 538 * 11.5.2) that (legacy) show_in_alarm() resds (via data->in_alarms)
 539 */
 540
 541static ssize_t show_in_min_alarm(struct device *dev,
 542                        struct device_attribute *devattr, char *buf)
 543{
 544        struct pc87360_data *data = pc87360_update_device(dev);
 545        unsigned nr = to_sensor_dev_attr(devattr)->index;
 546
 547        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
 548}
 549static ssize_t show_in_max_alarm(struct device *dev,
 550                        struct device_attribute *devattr, char *buf)
 551{
 552        struct pc87360_data *data = pc87360_update_device(dev);
 553        unsigned nr = to_sensor_dev_attr(devattr)->index;
 554
 555        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
 556}
 557
 558static struct sensor_device_attribute in_min_alarm[] = {
 559        SENSOR_ATTR(in0_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 0),
 560        SENSOR_ATTR(in1_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 1),
 561        SENSOR_ATTR(in2_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 2),
 562        SENSOR_ATTR(in3_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 3),
 563        SENSOR_ATTR(in4_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 4),
 564        SENSOR_ATTR(in5_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 5),
 565        SENSOR_ATTR(in6_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 6),
 566        SENSOR_ATTR(in7_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 7),
 567        SENSOR_ATTR(in8_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 8),
 568        SENSOR_ATTR(in9_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 9),
 569        SENSOR_ATTR(in10_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 10),
 570};
 571static struct sensor_device_attribute in_max_alarm[] = {
 572        SENSOR_ATTR(in0_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 0),
 573        SENSOR_ATTR(in1_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 1),
 574        SENSOR_ATTR(in2_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 2),
 575        SENSOR_ATTR(in3_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 3),
 576        SENSOR_ATTR(in4_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 4),
 577        SENSOR_ATTR(in5_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 5),
 578        SENSOR_ATTR(in6_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 6),
 579        SENSOR_ATTR(in7_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 7),
 580        SENSOR_ATTR(in8_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 8),
 581        SENSOR_ATTR(in9_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 9),
 582        SENSOR_ATTR(in10_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 10),
 583};
 584
 585#define VIN_UNIT_ATTRS(X) \
 586        &in_input[X].dev_attr.attr,     \
 587        &in_status[X].dev_attr.attr,    \
 588        &in_min[X].dev_attr.attr,       \
 589        &in_max[X].dev_attr.attr,       \
 590        &in_min_alarm[X].dev_attr.attr, \
 591        &in_max_alarm[X].dev_attr.attr
 592
 593static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
 594                        char *buf)
 595{
 596        struct pc87360_data *data = pc87360_update_device(dev);
 597        return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
 598}
 599static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 600
 601static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
 602                        char *buf)
 603{
 604        struct pc87360_data *data = dev_get_drvdata(dev);
 605        return sprintf(buf, "%u\n", data->vrm);
 606}
 607static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
 608                       const char *buf, size_t count)
 609{
 610        struct pc87360_data *data = dev_get_drvdata(dev);
 611        unsigned long val;
 612        int err;
 613
 614        err = kstrtoul(buf, 10, &val);
 615        if (err)
 616                return err;
 617
 618        data->vrm = val;
 619        return count;
 620}
 621static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
 622
 623static ssize_t show_in_alarms(struct device *dev,
 624                              struct device_attribute *attr, char *buf)
 625{
 626        struct pc87360_data *data = pc87360_update_device(dev);
 627        return sprintf(buf, "%u\n", data->in_alarms);
 628}
 629static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
 630
 631static struct attribute *pc8736x_vin_attr_array[] = {
 632        VIN_UNIT_ATTRS(0),
 633        VIN_UNIT_ATTRS(1),
 634        VIN_UNIT_ATTRS(2),
 635        VIN_UNIT_ATTRS(3),
 636        VIN_UNIT_ATTRS(4),
 637        VIN_UNIT_ATTRS(5),
 638        VIN_UNIT_ATTRS(6),
 639        VIN_UNIT_ATTRS(7),
 640        VIN_UNIT_ATTRS(8),
 641        VIN_UNIT_ATTRS(9),
 642        VIN_UNIT_ATTRS(10),
 643        &dev_attr_cpu0_vid.attr,
 644        &dev_attr_vrm.attr,
 645        &dev_attr_alarms_in.attr,
 646        NULL
 647};
 648static const struct attribute_group pc8736x_vin_group = {
 649        .attrs = pc8736x_vin_attr_array,
 650};
 651
 652static ssize_t show_therm_input(struct device *dev,
 653                                struct device_attribute *devattr, char *buf)
 654{
 655        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 656        struct pc87360_data *data = pc87360_update_device(dev);
 657        return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
 658                       data->in_vref));
 659}
 660static ssize_t show_therm_min(struct device *dev,
 661                              struct device_attribute *devattr, char *buf)
 662{
 663        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 664        struct pc87360_data *data = pc87360_update_device(dev);
 665        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
 666                       data->in_vref));
 667}
 668static ssize_t show_therm_max(struct device *dev,
 669                              struct device_attribute *devattr, char *buf)
 670{
 671        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 672        struct pc87360_data *data = pc87360_update_device(dev);
 673        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
 674                       data->in_vref));
 675}
 676static ssize_t show_therm_crit(struct device *dev,
 677                               struct device_attribute *devattr, char *buf)
 678{
 679        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 680        struct pc87360_data *data = pc87360_update_device(dev);
 681        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
 682                       data->in_vref));
 683}
 684static ssize_t show_therm_status(struct device *dev,
 685                                 struct device_attribute *devattr, char *buf)
 686{
 687        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 688        struct pc87360_data *data = pc87360_update_device(dev);
 689        return sprintf(buf, "%u\n", data->in_status[attr->index]);
 690}
 691
 692static ssize_t set_therm_min(struct device *dev,
 693                             struct device_attribute *devattr,
 694                             const char *buf, size_t count)
 695{
 696        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 697        struct pc87360_data *data = dev_get_drvdata(dev);
 698        long val;
 699        int err;
 700
 701        err = kstrtol(buf, 10, &val);
 702        if (err)
 703                return err;
 704
 705        mutex_lock(&data->update_lock);
 706        data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
 707        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
 708                            data->in_min[attr->index]);
 709        mutex_unlock(&data->update_lock);
 710        return count;
 711}
 712
 713static ssize_t set_therm_max(struct device *dev,
 714                             struct device_attribute *devattr,
 715                             const char *buf, size_t count)
 716{
 717        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 718        struct pc87360_data *data = dev_get_drvdata(dev);
 719        long val;
 720        int err;
 721
 722        err = kstrtol(buf, 10, &val);
 723        if (err)
 724                return err;
 725
 726        mutex_lock(&data->update_lock);
 727        data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
 728        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
 729                            data->in_max[attr->index]);
 730        mutex_unlock(&data->update_lock);
 731        return count;
 732}
 733static ssize_t set_therm_crit(struct device *dev,
 734                              struct device_attribute *devattr,
 735                              const char *buf, size_t count)
 736{
 737        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 738        struct pc87360_data *data = dev_get_drvdata(dev);
 739        long val;
 740        int err;
 741
 742        err = kstrtol(buf, 10, &val);
 743        if (err)
 744                return err;
 745
 746        mutex_lock(&data->update_lock);
 747        data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
 748        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
 749                            data->in_crit[attr->index-11]);
 750        mutex_unlock(&data->update_lock);
 751        return count;
 752}
 753
 754/*
 755 * the +11 term below reflects the fact that VLM units 11,12,13 are
 756 * used in the chip to measure voltage across the thermistors
 757 */
 758static struct sensor_device_attribute therm_input[] = {
 759        SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0 + 11),
 760        SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1 + 11),
 761        SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2 + 11),
 762};
 763static struct sensor_device_attribute therm_status[] = {
 764        SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0 + 11),
 765        SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1 + 11),
 766        SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2 + 11),
 767};
 768static struct sensor_device_attribute therm_min[] = {
 769        SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
 770                    show_therm_min, set_therm_min, 0 + 11),
 771        SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
 772                    show_therm_min, set_therm_min, 1 + 11),
 773        SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
 774                    show_therm_min, set_therm_min, 2 + 11),
 775};
 776static struct sensor_device_attribute therm_max[] = {
 777        SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
 778                    show_therm_max, set_therm_max, 0 + 11),
 779        SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
 780                    show_therm_max, set_therm_max, 1 + 11),
 781        SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
 782                    show_therm_max, set_therm_max, 2 + 11),
 783};
 784static struct sensor_device_attribute therm_crit[] = {
 785        SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
 786                    show_therm_crit, set_therm_crit, 0 + 11),
 787        SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
 788                    show_therm_crit, set_therm_crit, 1 + 11),
 789        SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
 790                    show_therm_crit, set_therm_crit, 2 + 11),
 791};
 792
 793/*
 794 * show_therm_min/max_alarm() reads data from the per-channel voltage
 795 * status register (sec 11.5.12)
 796 */
 797
 798static ssize_t show_therm_min_alarm(struct device *dev,
 799                                struct device_attribute *devattr, char *buf)
 800{
 801        struct pc87360_data *data = pc87360_update_device(dev);
 802        unsigned nr = to_sensor_dev_attr(devattr)->index;
 803
 804        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
 805}
 806static ssize_t show_therm_max_alarm(struct device *dev,
 807                                struct device_attribute *devattr, char *buf)
 808{
 809        struct pc87360_data *data = pc87360_update_device(dev);
 810        unsigned nr = to_sensor_dev_attr(devattr)->index;
 811
 812        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
 813}
 814static ssize_t show_therm_crit_alarm(struct device *dev,
 815                                struct device_attribute *devattr, char *buf)
 816{
 817        struct pc87360_data *data = pc87360_update_device(dev);
 818        unsigned nr = to_sensor_dev_attr(devattr)->index;
 819
 820        return sprintf(buf, "%u\n", !!(data->in_status[nr] & TEMP_ALM_CRIT));
 821}
 822
 823static struct sensor_device_attribute therm_min_alarm[] = {
 824        SENSOR_ATTR(temp4_min_alarm, S_IRUGO,
 825                    show_therm_min_alarm, NULL, 0 + 11),
 826        SENSOR_ATTR(temp5_min_alarm, S_IRUGO,
 827                    show_therm_min_alarm, NULL, 1 + 11),
 828        SENSOR_ATTR(temp6_min_alarm, S_IRUGO,
 829                    show_therm_min_alarm, NULL, 2 + 11),
 830};
 831static struct sensor_device_attribute therm_max_alarm[] = {
 832        SENSOR_ATTR(temp4_max_alarm, S_IRUGO,
 833                    show_therm_max_alarm, NULL, 0 + 11),
 834        SENSOR_ATTR(temp5_max_alarm, S_IRUGO,
 835                    show_therm_max_alarm, NULL, 1 + 11),
 836        SENSOR_ATTR(temp6_max_alarm, S_IRUGO,
 837                    show_therm_max_alarm, NULL, 2 + 11),
 838};
 839static struct sensor_device_attribute therm_crit_alarm[] = {
 840        SENSOR_ATTR(temp4_crit_alarm, S_IRUGO,
 841                    show_therm_crit_alarm, NULL, 0 + 11),
 842        SENSOR_ATTR(temp5_crit_alarm, S_IRUGO,
 843                    show_therm_crit_alarm, NULL, 1 + 11),
 844        SENSOR_ATTR(temp6_crit_alarm, S_IRUGO,
 845                    show_therm_crit_alarm, NULL, 2 + 11),
 846};
 847
 848#define THERM_UNIT_ATTRS(X) \
 849        &therm_input[X].dev_attr.attr,  \
 850        &therm_status[X].dev_attr.attr, \
 851        &therm_min[X].dev_attr.attr,    \
 852        &therm_max[X].dev_attr.attr,    \
 853        &therm_crit[X].dev_attr.attr,   \
 854        &therm_min_alarm[X].dev_attr.attr, \
 855        &therm_max_alarm[X].dev_attr.attr, \
 856        &therm_crit_alarm[X].dev_attr.attr
 857
 858static struct attribute *pc8736x_therm_attr_array[] = {
 859        THERM_UNIT_ATTRS(0),
 860        THERM_UNIT_ATTRS(1),
 861        THERM_UNIT_ATTRS(2),
 862        NULL
 863};
 864static const struct attribute_group pc8736x_therm_group = {
 865        .attrs = pc8736x_therm_attr_array,
 866};
 867
 868static ssize_t show_temp_input(struct device *dev,
 869                               struct device_attribute *devattr, char *buf)
 870{
 871        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 872        struct pc87360_data *data = pc87360_update_device(dev);
 873        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
 874}
 875
 876static ssize_t show_temp_min(struct device *dev,
 877                             struct device_attribute *devattr, char *buf)
 878{
 879        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 880        struct pc87360_data *data = pc87360_update_device(dev);
 881        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
 882}
 883
 884static ssize_t show_temp_max(struct device *dev,
 885                             struct device_attribute *devattr, char *buf)
 886{
 887        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 888        struct pc87360_data *data = pc87360_update_device(dev);
 889        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
 890}
 891
 892static ssize_t show_temp_crit(struct device *dev,
 893                              struct device_attribute *devattr, char *buf)
 894{
 895        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 896        struct pc87360_data *data = pc87360_update_device(dev);
 897        return sprintf(buf, "%d\n",
 898                       TEMP_FROM_REG(data->temp_crit[attr->index]));
 899}
 900
 901static ssize_t show_temp_status(struct device *dev,
 902                                struct device_attribute *devattr, char *buf)
 903{
 904        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 905        struct pc87360_data *data = pc87360_update_device(dev);
 906        return sprintf(buf, "%d\n", data->temp_status[attr->index]);
 907}
 908
 909static ssize_t set_temp_min(struct device *dev,
 910                            struct device_attribute *devattr,
 911                            const char *buf, size_t count)
 912{
 913        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 914        struct pc87360_data *data = dev_get_drvdata(dev);
 915        long val;
 916        int err;
 917
 918        err = kstrtol(buf, 10, &val);
 919        if (err)
 920                return err;
 921
 922        mutex_lock(&data->update_lock);
 923        data->temp_min[attr->index] = TEMP_TO_REG(val);
 924        pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
 925                            data->temp_min[attr->index]);
 926        mutex_unlock(&data->update_lock);
 927        return count;
 928}
 929
 930static ssize_t set_temp_max(struct device *dev,
 931                            struct device_attribute *devattr,
 932                            const char *buf, size_t count)
 933{
 934        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 935        struct pc87360_data *data = dev_get_drvdata(dev);
 936        long val;
 937        int err;
 938
 939        err = kstrtol(buf, 10, &val);
 940        if (err)
 941                return err;
 942
 943        mutex_lock(&data->update_lock);
 944        data->temp_max[attr->index] = TEMP_TO_REG(val);
 945        pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
 946                            data->temp_max[attr->index]);
 947        mutex_unlock(&data->update_lock);
 948        return count;
 949}
 950
 951static ssize_t set_temp_crit(struct device *dev,
 952                             struct device_attribute *devattr, const char *buf,
 953                             size_t count)
 954{
 955        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 956        struct pc87360_data *data = dev_get_drvdata(dev);
 957        long val;
 958        int err;
 959
 960        err = kstrtol(buf, 10, &val);
 961        if (err)
 962                return err;
 963
 964        mutex_lock(&data->update_lock);
 965        data->temp_crit[attr->index] = TEMP_TO_REG(val);
 966        pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
 967                            data->temp_crit[attr->index]);
 968        mutex_unlock(&data->update_lock);
 969        return count;
 970}
 971
 972static struct sensor_device_attribute temp_input[] = {
 973        SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
 974        SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
 975        SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
 976};
 977static struct sensor_device_attribute temp_status[] = {
 978        SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
 979        SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
 980        SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
 981};
 982static struct sensor_device_attribute temp_min[] = {
 983        SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
 984                    show_temp_min, set_temp_min, 0),
 985        SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
 986                    show_temp_min, set_temp_min, 1),
 987        SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
 988                    show_temp_min, set_temp_min, 2),
 989};
 990static struct sensor_device_attribute temp_max[] = {
 991        SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
 992                    show_temp_max, set_temp_max, 0),
 993        SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
 994                    show_temp_max, set_temp_max, 1),
 995        SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
 996                    show_temp_max, set_temp_max, 2),
 997};
 998static struct sensor_device_attribute temp_crit[] = {
 999        SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
1000                    show_temp_crit, set_temp_crit, 0),
1001        SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
1002                    show_temp_crit, set_temp_crit, 1),
1003        SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
1004                    show_temp_crit, set_temp_crit, 2),
1005};
1006
1007static ssize_t show_temp_alarms(struct device *dev,
1008                                struct device_attribute *attr, char *buf)
1009{
1010        struct pc87360_data *data = pc87360_update_device(dev);
1011        return sprintf(buf, "%u\n", data->temp_alarms);
1012}
1013
1014static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
1015
1016/*
1017 * show_temp_min/max_alarm() reads data from the per-channel status
1018 * register (sec 12.3.7), not the temp event status registers (sec
1019 * 12.3.2) that show_temp_alarm() reads (via data->temp_alarms)
1020 */
1021
1022static ssize_t show_temp_min_alarm(struct device *dev,
1023                        struct device_attribute *devattr, char *buf)
1024{
1025        struct pc87360_data *data = pc87360_update_device(dev);
1026        unsigned nr = to_sensor_dev_attr(devattr)->index;
1027
1028        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
1029}
1030
1031static ssize_t show_temp_max_alarm(struct device *dev,
1032                        struct device_attribute *devattr, char *buf)
1033{
1034        struct pc87360_data *data = pc87360_update_device(dev);
1035        unsigned nr = to_sensor_dev_attr(devattr)->index;
1036
1037        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
1038}
1039
1040static ssize_t show_temp_crit_alarm(struct device *dev,
1041                        struct device_attribute *devattr, char *buf)
1042{
1043        struct pc87360_data *data = pc87360_update_device(dev);
1044        unsigned nr = to_sensor_dev_attr(devattr)->index;
1045
1046        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
1047}
1048
1049static struct sensor_device_attribute temp_min_alarm[] = {
1050        SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 0),
1051        SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 1),
1052        SENSOR_ATTR(temp3_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 2),
1053};
1054
1055static struct sensor_device_attribute temp_max_alarm[] = {
1056        SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 0),
1057        SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 1),
1058        SENSOR_ATTR(temp3_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 2),
1059};
1060
1061static struct sensor_device_attribute temp_crit_alarm[] = {
1062        SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 0),
1063        SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 1),
1064        SENSOR_ATTR(temp3_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 2),
1065};
1066
1067#define TEMP_FAULT      0x40    /* open diode */
1068static ssize_t show_temp_fault(struct device *dev,
1069                        struct device_attribute *devattr, char *buf)
1070{
1071        struct pc87360_data *data = pc87360_update_device(dev);
1072        unsigned nr = to_sensor_dev_attr(devattr)->index;
1073
1074        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
1075}
1076static struct sensor_device_attribute temp_fault[] = {
1077        SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
1078        SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
1079        SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2),
1080};
1081
1082#define TEMP_UNIT_ATTRS(X)                      \
1083{       &temp_input[X].dev_attr.attr,           \
1084        &temp_status[X].dev_attr.attr,          \
1085        &temp_min[X].dev_attr.attr,             \
1086        &temp_max[X].dev_attr.attr,             \
1087        &temp_crit[X].dev_attr.attr,            \
1088        &temp_min_alarm[X].dev_attr.attr,       \
1089        &temp_max_alarm[X].dev_attr.attr,       \
1090        &temp_crit_alarm[X].dev_attr.attr,      \
1091        &temp_fault[X].dev_attr.attr,           \
1092        NULL                                    \
1093}
1094
1095static struct attribute *pc8736x_temp_attr[][10] = {
1096        TEMP_UNIT_ATTRS(0),
1097        TEMP_UNIT_ATTRS(1),
1098        TEMP_UNIT_ATTRS(2)
1099};
1100
1101static const struct attribute_group pc8736x_temp_attr_group[] = {
1102        { .attrs = pc8736x_temp_attr[0] },
1103        { .attrs = pc8736x_temp_attr[1] },
1104        { .attrs = pc8736x_temp_attr[2] }
1105};
1106
1107static ssize_t show_name(struct device *dev,
1108                        struct device_attribute *devattr, char *buf)
1109{
1110        struct pc87360_data *data = dev_get_drvdata(dev);
1111        return sprintf(buf, "%s\n", data->name);
1112}
1113
1114static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1115
1116/*
1117 * Device detection, registration and update
1118 */
1119
1120static int __init pc87360_find(int sioaddr, u8 *devid,
1121                               unsigned short *addresses)
1122{
1123        u16 val;
1124        int i;
1125        int nrdev; /* logical device count */
1126
1127        /* No superio_enter */
1128
1129        /* Identify device */
1130        val = force_id ? force_id : superio_inb(sioaddr, DEVID);
1131        switch (val) {
1132        case 0xE1: /* PC87360 */
1133        case 0xE8: /* PC87363 */
1134        case 0xE4: /* PC87364 */
1135                nrdev = 1;
1136                break;
1137        case 0xE5: /* PC87365 */
1138        case 0xE9: /* PC87366 */
1139                nrdev = 3;
1140                break;
1141        default:
1142                superio_exit(sioaddr);
1143                return -ENODEV;
1144        }
1145        /* Remember the device id */
1146        *devid = val;
1147
1148        for (i = 0; i < nrdev; i++) {
1149                /* select logical device */
1150                superio_outb(sioaddr, DEV, logdev[i]);
1151
1152                val = superio_inb(sioaddr, ACT);
1153                if (!(val & 0x01)) {
1154                        pr_info("Device 0x%02x not activated\n", logdev[i]);
1155                        continue;
1156                }
1157
1158                val = (superio_inb(sioaddr, BASE) << 8)
1159                    | superio_inb(sioaddr, BASE + 1);
1160                if (!val) {
1161                        pr_info("Base address not set for device 0x%02x\n",
1162                                logdev[i]);
1163                        continue;
1164                }
1165
1166                addresses[i] = val;
1167
1168                if (i == 0) { /* Fans */
1169                        confreg[0] = superio_inb(sioaddr, 0xF0);
1170                        confreg[1] = superio_inb(sioaddr, 0xF1);
1171
1172                        pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 1,
1173                                 (confreg[0] >> 2) & 1, (confreg[0] >> 3) & 1,
1174                                 (confreg[0] >> 4) & 1);
1175                        pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 2,
1176                                 (confreg[0] >> 5) & 1, (confreg[0] >> 6) & 1,
1177                                 (confreg[0] >> 7) & 1);
1178                        pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 3,
1179                                 confreg[1] & 1, (confreg[1] >> 1) & 1,
1180                                 (confreg[1] >> 2) & 1);
1181                } else if (i == 1) { /* Voltages */
1182                        /* Are we using thermistors? */
1183                        if (*devid == 0xE9) { /* PC87366 */
1184                                /*
1185                                 * These registers are not logical-device
1186                                 * specific, just that we won't need them if
1187                                 * we don't use the VLM device
1188                                 */
1189                                confreg[2] = superio_inb(sioaddr, 0x2B);
1190                                confreg[3] = superio_inb(sioaddr, 0x25);
1191
1192                                if (confreg[2] & 0x40) {
1193                                        pr_info("Using thermistors for temperature monitoring\n");
1194                                }
1195                                if (confreg[3] & 0xE0) {
1196                                        pr_info("VID inputs routed (mode %u)\n",
1197                                                confreg[3] >> 5);
1198                                }
1199                        }
1200                }
1201        }
1202
1203        superio_exit(sioaddr);
1204        return 0;
1205}
1206
1207static void pc87360_remove_files(struct device *dev)
1208{
1209        int i;
1210
1211        device_remove_file(dev, &dev_attr_name);
1212        device_remove_file(dev, &dev_attr_alarms_temp);
1213        for (i = 0; i < ARRAY_SIZE(pc8736x_temp_attr_group); i++)
1214                sysfs_remove_group(&dev->kobj, &pc8736x_temp_attr_group[i]);
1215        for (i = 0; i < ARRAY_SIZE(pc8736x_fan_attr_group); i++) {
1216                sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_attr_group[i]);
1217                device_remove_file(dev, &pwm[i].dev_attr);
1218        }
1219        sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
1220        sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
1221}
1222
1223static int pc87360_probe(struct platform_device *pdev)
1224{
1225        int i;
1226        struct pc87360_data *data;
1227        int err = 0;
1228        const char *name = "pc87360";
1229        int use_thermistors = 0;
1230        struct device *dev = &pdev->dev;
1231
1232        data = devm_kzalloc(dev, sizeof(struct pc87360_data), GFP_KERNEL);
1233        if (!data)
1234                return -ENOMEM;
1235
1236        data->fannr = 2;
1237        data->innr = 0;
1238        data->tempnr = 0;
1239
1240        switch (devid) {
1241        case 0xe8:
1242                name = "pc87363";
1243                break;
1244        case 0xe4:
1245                name = "pc87364";
1246                data->fannr = 3;
1247                break;
1248        case 0xe5:
1249                name = "pc87365";
1250                data->fannr = extra_isa[0] ? 3 : 0;
1251                data->innr = extra_isa[1] ? 11 : 0;
1252                data->tempnr = extra_isa[2] ? 2 : 0;
1253                break;
1254        case 0xe9:
1255                name = "pc87366";
1256                data->fannr = extra_isa[0] ? 3 : 0;
1257                data->innr = extra_isa[1] ? 14 : 0;
1258                data->tempnr = extra_isa[2] ? 3 : 0;
1259                break;
1260        }
1261
1262        data->name = name;
1263        data->valid = 0;
1264        mutex_init(&data->lock);
1265        mutex_init(&data->update_lock);
1266        platform_set_drvdata(pdev, data);
1267
1268        for (i = 0; i < LDNI_MAX; i++) {
1269                data->address[i] = extra_isa[i];
1270                if (data->address[i]
1271                 && !devm_request_region(dev, extra_isa[i], PC87360_EXTENT,
1272                                         pc87360_driver.driver.name)) {
1273                        dev_err(dev,
1274                                "Region 0x%x-0x%x already in use!\n",
1275                                extra_isa[i], extra_isa[i]+PC87360_EXTENT-1);
1276                        return -EBUSY;
1277                }
1278        }
1279
1280        /* Retrieve the fans configuration from Super-I/O space */
1281        if (data->fannr)
1282                data->fan_conf = confreg[0] | (confreg[1] << 8);
1283
1284        /*
1285         * Use the correct reference voltage
1286         * Unless both the VLM and the TMS logical devices agree to
1287         * use an external Vref, the internal one is used.
1288         */
1289        if (data->innr) {
1290                i = pc87360_read_value(data, LD_IN, NO_BANK,
1291                                       PC87365_REG_IN_CONFIG);
1292                if (data->tempnr) {
1293                        i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
1294                                                PC87365_REG_TEMP_CONFIG);
1295                }
1296                data->in_vref = (i&0x02) ? 3025 : 2966;
1297                dev_dbg(dev, "Using %s reference voltage\n",
1298                        (i&0x02) ? "external" : "internal");
1299
1300                data->vid_conf = confreg[3];
1301                data->vrm = vid_which_vrm();
1302        }
1303
1304        /* Fan clock dividers may be needed before any data is read */
1305        for (i = 0; i < data->fannr; i++) {
1306                if (FAN_CONFIG_MONITOR(data->fan_conf, i))
1307                        data->fan_status[i] = pc87360_read_value(data,
1308                                              LD_FAN, NO_BANK,
1309                                              PC87360_REG_FAN_STATUS(i));
1310        }
1311
1312        if (init > 0) {
1313                if (devid == 0xe9 && data->address[1]) /* PC87366 */
1314                        use_thermistors = confreg[2] & 0x40;
1315
1316                pc87360_init_device(pdev, use_thermistors);
1317        }
1318
1319        /* Register all-or-nothing sysfs groups */
1320
1321        if (data->innr) {
1322                err = sysfs_create_group(&dev->kobj, &pc8736x_vin_group);
1323                if (err)
1324                        goto error;
1325        }
1326
1327        if (data->innr == 14) {
1328                err = sysfs_create_group(&dev->kobj, &pc8736x_therm_group);
1329                if (err)
1330                        goto error;
1331        }
1332
1333        /* create device attr-files for varying sysfs groups */
1334
1335        if (data->tempnr) {
1336                for (i = 0; i < data->tempnr; i++) {
1337                        err = sysfs_create_group(&dev->kobj,
1338                                                 &pc8736x_temp_attr_group[i]);
1339                        if (err)
1340                                goto error;
1341                }
1342                err = device_create_file(dev, &dev_attr_alarms_temp);
1343                if (err)
1344                        goto error;
1345        }
1346
1347        for (i = 0; i < data->fannr; i++) {
1348                if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1349                        err = sysfs_create_group(&dev->kobj,
1350                                                 &pc8736x_fan_attr_group[i]);
1351                        if (err)
1352                                goto error;
1353                }
1354                if (FAN_CONFIG_CONTROL(data->fan_conf, i)) {
1355                        err = device_create_file(dev, &pwm[i].dev_attr);
1356                        if (err)
1357                                goto error;
1358                }
1359        }
1360
1361        err = device_create_file(dev, &dev_attr_name);
1362        if (err)
1363                goto error;
1364
1365        data->hwmon_dev = hwmon_device_register(dev);
1366        if (IS_ERR(data->hwmon_dev)) {
1367                err = PTR_ERR(data->hwmon_dev);
1368                goto error;
1369        }
1370        return 0;
1371
1372error:
1373        pc87360_remove_files(dev);
1374        return err;
1375}
1376
1377static int pc87360_remove(struct platform_device *pdev)
1378{
1379        struct pc87360_data *data = platform_get_drvdata(pdev);
1380
1381        hwmon_device_unregister(data->hwmon_dev);
1382        pc87360_remove_files(&pdev->dev);
1383
1384        return 0;
1385}
1386
1387/*
1388 * ldi is the logical device index
1389 * bank is for voltages and temperatures only
1390 */
1391static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1392                              u8 reg)
1393{
1394        int res;
1395
1396        mutex_lock(&(data->lock));
1397        if (bank != NO_BANK)
1398                outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1399        res = inb_p(data->address[ldi] + reg);
1400        mutex_unlock(&(data->lock));
1401
1402        return res;
1403}
1404
1405static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1406                                u8 reg, u8 value)
1407{
1408        mutex_lock(&(data->lock));
1409        if (bank != NO_BANK)
1410                outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1411        outb_p(value, data->address[ldi] + reg);
1412        mutex_unlock(&(data->lock));
1413}
1414
1415/* (temp & vin) channel conversion status register flags (pdf sec.11.5.12) */
1416#define CHAN_CNVRTD     0x80    /* new data ready */
1417#define CHAN_ENA        0x01    /* enabled channel (temp or vin) */
1418#define CHAN_ALM_ENA    0x10    /* propagate to alarms-reg ?? (chk val!) */
1419#define CHAN_READY      (CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
1420
1421#define TEMP_OTS_OE     0x20    /* OTS Output Enable */
1422#define VIN_RW1C_MASK   (CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN)   /* 0x87 */
1423#define TEMP_RW1C_MASK  (VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
1424
1425static void pc87360_init_device(struct platform_device *pdev,
1426                                int use_thermistors)
1427{
1428        struct pc87360_data *data = platform_get_drvdata(pdev);
1429        int i, nr;
1430        const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1431        const u8 init_temp[3] = { 2, 2, 1 };
1432        u8 reg;
1433
1434        if (init >= 2 && data->innr) {
1435                reg = pc87360_read_value(data, LD_IN, NO_BANK,
1436                                         PC87365_REG_IN_CONVRATE);
1437                dev_info(&pdev->dev,
1438                         "VLM conversion set to 1s period, 160us delay\n");
1439                pc87360_write_value(data, LD_IN, NO_BANK,
1440                                    PC87365_REG_IN_CONVRATE,
1441                                    (reg & 0xC0) | 0x11);
1442        }
1443
1444        nr = data->innr < 11 ? data->innr : 11;
1445        for (i = 0; i < nr; i++) {
1446                reg = pc87360_read_value(data, LD_IN, i,
1447                                         PC87365_REG_IN_STATUS);
1448                dev_dbg(&pdev->dev, "bios in%d status:0x%02x\n", i, reg);
1449                if (init >= init_in[i]) {
1450                        /* Forcibly enable voltage channel */
1451                        if (!(reg & CHAN_ENA)) {
1452                                dev_dbg(&pdev->dev, "Forcibly enabling in%d\n",
1453                                        i);
1454                                pc87360_write_value(data, LD_IN, i,
1455                                                    PC87365_REG_IN_STATUS,
1456                                                    (reg & 0x68) | 0x87);
1457                        }
1458                }
1459        }
1460
1461        /*
1462         * We can't blindly trust the Super-I/O space configuration bit,
1463         * most BIOS won't set it properly
1464         */
1465        dev_dbg(&pdev->dev, "bios thermistors:%d\n", use_thermistors);
1466        for (i = 11; i < data->innr; i++) {
1467                reg = pc87360_read_value(data, LD_IN, i,
1468                                         PC87365_REG_TEMP_STATUS);
1469                use_thermistors = use_thermistors || (reg & CHAN_ENA);
1470                /* thermistors are temp[4-6], measured on vin[11-14] */
1471                dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i-7, reg);
1472        }
1473        dev_dbg(&pdev->dev, "using thermistors:%d\n", use_thermistors);
1474
1475        i = use_thermistors ? 2 : 0;
1476        for (; i < data->tempnr; i++) {
1477                reg = pc87360_read_value(data, LD_TEMP, i,
1478                                         PC87365_REG_TEMP_STATUS);
1479                dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i + 1, reg);
1480                if (init >= init_temp[i]) {
1481                        /* Forcibly enable temperature channel */
1482                        if (!(reg & CHAN_ENA)) {
1483                                dev_dbg(&pdev->dev,
1484                                        "Forcibly enabling temp%d\n", i + 1);
1485                                pc87360_write_value(data, LD_TEMP, i,
1486                                                    PC87365_REG_TEMP_STATUS,
1487                                                    0xCF);
1488                        }
1489                }
1490        }
1491
1492        if (use_thermistors) {
1493                for (i = 11; i < data->innr; i++) {
1494                        if (init >= init_in[i]) {
1495                                /*
1496                                 * The pin may already be used by thermal
1497                                 * diodes
1498                                 */
1499                                reg = pc87360_read_value(data, LD_TEMP,
1500                                      (i - 11) / 2, PC87365_REG_TEMP_STATUS);
1501                                if (reg & CHAN_ENA) {
1502                                        dev_dbg(&pdev->dev,
1503                        "Skipping temp%d, pin already in use by temp%d\n",
1504                                                i - 7, (i - 11) / 2);
1505                                        continue;
1506                                }
1507
1508                                /* Forcibly enable thermistor channel */
1509                                reg = pc87360_read_value(data, LD_IN, i,
1510                                                         PC87365_REG_IN_STATUS);
1511                                if (!(reg & CHAN_ENA)) {
1512                                        dev_dbg(&pdev->dev,
1513                                                "Forcibly enabling temp%d\n",
1514                                                i - 7);
1515                                        pc87360_write_value(data, LD_IN, i,
1516                                                PC87365_REG_TEMP_STATUS,
1517                                                (reg & 0x60) | 0x8F);
1518                                }
1519                        }
1520                }
1521        }
1522
1523        if (data->innr) {
1524                reg = pc87360_read_value(data, LD_IN, NO_BANK,
1525                                         PC87365_REG_IN_CONFIG);
1526                dev_dbg(&pdev->dev, "bios vin-cfg:0x%02x\n", reg);
1527                if (reg & CHAN_ENA) {
1528                        dev_dbg(&pdev->dev,
1529                                "Forcibly enabling monitoring (VLM)\n");
1530                        pc87360_write_value(data, LD_IN, NO_BANK,
1531                                            PC87365_REG_IN_CONFIG,
1532                                            reg & 0xFE);
1533                }
1534        }
1535
1536        if (data->tempnr) {
1537                reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1538                                         PC87365_REG_TEMP_CONFIG);
1539                dev_dbg(&pdev->dev, "bios temp-cfg:0x%02x\n", reg);
1540                if (reg & CHAN_ENA) {
1541                        dev_dbg(&pdev->dev,
1542                                "Forcibly enabling monitoring (TMS)\n");
1543                        pc87360_write_value(data, LD_TEMP, NO_BANK,
1544                                            PC87365_REG_TEMP_CONFIG,
1545                                            reg & 0xFE);
1546                }
1547
1548                if (init >= 2) {
1549                        /* Chip config as documented by National Semi. */
1550                        pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1551                        /*
1552                         * We voluntarily omit the bank here, in case the
1553                         * sequence itself matters. It shouldn't be a problem,
1554                         * since nobody else is supposed to access the
1555                         * device at that point.
1556                         */
1557                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1558                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1559                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1560                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1561                }
1562        }
1563}
1564
1565static void pc87360_autodiv(struct device *dev, int nr)
1566{
1567        struct pc87360_data *data = dev_get_drvdata(dev);
1568        u8 old_min = data->fan_min[nr];
1569
1570        /* Increase clock divider if needed and possible */
1571        if ((data->fan_status[nr] & 0x04) /* overflow flag */
1572         || (data->fan[nr] >= 224)) { /* next to overflow */
1573                if ((data->fan_status[nr] & 0x60) != 0x60) {
1574                        data->fan_status[nr] += 0x20;
1575                        data->fan_min[nr] >>= 1;
1576                        data->fan[nr] >>= 1;
1577                        dev_dbg(dev,
1578                                "Increasing clock divider to %d for fan %d\n",
1579                                FAN_DIV_FROM_REG(data->fan_status[nr]), nr + 1);
1580                }
1581        } else {
1582                /* Decrease clock divider if possible */
1583                while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1584                 && data->fan[nr] < 85 /* bad accuracy */
1585                 && (data->fan_status[nr] & 0x60) != 0x00) {
1586                        data->fan_status[nr] -= 0x20;
1587                        data->fan_min[nr] <<= 1;
1588                        data->fan[nr] <<= 1;
1589                        dev_dbg(dev,
1590                                "Decreasing clock divider to %d for fan %d\n",
1591                                FAN_DIV_FROM_REG(data->fan_status[nr]),
1592                                nr + 1);
1593                }
1594        }
1595
1596        /* Write new fan min if it changed */
1597        if (old_min != data->fan_min[nr]) {
1598                pc87360_write_value(data, LD_FAN, NO_BANK,
1599                                    PC87360_REG_FAN_MIN(nr),
1600                                    data->fan_min[nr]);
1601        }
1602}
1603
1604static struct pc87360_data *pc87360_update_device(struct device *dev)
1605{
1606        struct pc87360_data *data = dev_get_drvdata(dev);
1607        u8 i;
1608
1609        mutex_lock(&data->update_lock);
1610
1611        if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1612                dev_dbg(dev, "Data update\n");
1613
1614                /* Fans */
1615                for (i = 0; i < data->fannr; i++) {
1616                        if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1617                                data->fan_status[i] =
1618                                        pc87360_read_value(data, LD_FAN,
1619                                        NO_BANK, PC87360_REG_FAN_STATUS(i));
1620                                data->fan[i] = pc87360_read_value(data, LD_FAN,
1621                                               NO_BANK, PC87360_REG_FAN(i));
1622                                data->fan_min[i] = pc87360_read_value(data,
1623                                                   LD_FAN, NO_BANK,
1624                                                   PC87360_REG_FAN_MIN(i));
1625                                /* Change clock divider if needed */
1626                                pc87360_autodiv(dev, i);
1627                                /* Clear bits and write new divider */
1628                                pc87360_write_value(data, LD_FAN, NO_BANK,
1629                                                    PC87360_REG_FAN_STATUS(i),
1630                                                    data->fan_status[i]);
1631                        }
1632                        if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1633                                data->pwm[i] = pc87360_read_value(data, LD_FAN,
1634                                               NO_BANK, PC87360_REG_PWM(i));
1635                }
1636
1637                /* Voltages */
1638                for (i = 0; i < data->innr; i++) {
1639                        data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1640                                             PC87365_REG_IN_STATUS);
1641                        /* Clear bits */
1642                        pc87360_write_value(data, LD_IN, i,
1643                                            PC87365_REG_IN_STATUS,
1644                                            data->in_status[i]);
1645                        if ((data->in_status[i] & CHAN_READY) == CHAN_READY) {
1646                                data->in[i] = pc87360_read_value(data, LD_IN,
1647                                              i, PC87365_REG_IN);
1648                        }
1649                        if (data->in_status[i] & CHAN_ENA) {
1650                                data->in_min[i] = pc87360_read_value(data,
1651                                                  LD_IN, i,
1652                                                  PC87365_REG_IN_MIN);
1653                                data->in_max[i] = pc87360_read_value(data,
1654                                                  LD_IN, i,
1655                                                  PC87365_REG_IN_MAX);
1656                                if (i >= 11)
1657                                        data->in_crit[i-11] =
1658                                                pc87360_read_value(data, LD_IN,
1659                                                i, PC87365_REG_TEMP_CRIT);
1660                        }
1661                }
1662                if (data->innr) {
1663                        data->in_alarms = pc87360_read_value(data, LD_IN,
1664                                          NO_BANK, PC87365_REG_IN_ALARMS1)
1665                                        | ((pc87360_read_value(data, LD_IN,
1666                                            NO_BANK, PC87365_REG_IN_ALARMS2)
1667                                            & 0x07) << 8);
1668                        data->vid = (data->vid_conf & 0xE0) ?
1669                                    pc87360_read_value(data, LD_IN,
1670                                    NO_BANK, PC87365_REG_VID) : 0x1F;
1671                }
1672
1673                /* Temperatures */
1674                for (i = 0; i < data->tempnr; i++) {
1675                        data->temp_status[i] = pc87360_read_value(data,
1676                                               LD_TEMP, i,
1677                                               PC87365_REG_TEMP_STATUS);
1678                        /* Clear bits */
1679                        pc87360_write_value(data, LD_TEMP, i,
1680                                            PC87365_REG_TEMP_STATUS,
1681                                            data->temp_status[i]);
1682                        if ((data->temp_status[i] & CHAN_READY) == CHAN_READY) {
1683                                data->temp[i] = pc87360_read_value(data,
1684                                                LD_TEMP, i,
1685                                                PC87365_REG_TEMP);
1686                        }
1687                        if (data->temp_status[i] & CHAN_ENA) {
1688                                data->temp_min[i] = pc87360_read_value(data,
1689                                                    LD_TEMP, i,
1690                                                    PC87365_REG_TEMP_MIN);
1691                                data->temp_max[i] = pc87360_read_value(data,
1692                                                    LD_TEMP, i,
1693                                                    PC87365_REG_TEMP_MAX);
1694                                data->temp_crit[i] = pc87360_read_value(data,
1695                                                     LD_TEMP, i,
1696                                                     PC87365_REG_TEMP_CRIT);
1697                        }
1698                }
1699                if (data->tempnr) {
1700                        data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1701                                            NO_BANK, PC87365_REG_TEMP_ALARMS)
1702                                            & 0x3F;
1703                }
1704
1705                data->last_updated = jiffies;
1706                data->valid = 1;
1707        }
1708
1709        mutex_unlock(&data->update_lock);
1710
1711        return data;
1712}
1713
1714static int __init pc87360_device_add(unsigned short address)
1715{
1716        struct resource res[3];
1717        int err, i, res_count;
1718
1719        pdev = platform_device_alloc("pc87360", address);
1720        if (!pdev) {
1721                err = -ENOMEM;
1722                pr_err("Device allocation failed\n");
1723                goto exit;
1724        }
1725
1726        memset(res, 0, 3 * sizeof(struct resource));
1727        res_count = 0;
1728        for (i = 0; i < 3; i++) {
1729                if (!extra_isa[i])
1730                        continue;
1731                res[res_count].start = extra_isa[i];
1732                res[res_count].end = extra_isa[i] + PC87360_EXTENT - 1;
1733                res[res_count].name = "pc87360",
1734                res[res_count].flags = IORESOURCE_IO,
1735
1736                err = acpi_check_resource_conflict(&res[res_count]);
1737                if (err)
1738                        goto exit_device_put;
1739
1740                res_count++;
1741        }
1742
1743        err = platform_device_add_resources(pdev, res, res_count);
1744        if (err) {
1745                pr_err("Device resources addition failed (%d)\n", err);
1746                goto exit_device_put;
1747        }
1748
1749        err = platform_device_add(pdev);
1750        if (err) {
1751                pr_err("Device addition failed (%d)\n", err);
1752                goto exit_device_put;
1753        }
1754
1755        return 0;
1756
1757exit_device_put:
1758        platform_device_put(pdev);
1759exit:
1760        return err;
1761}
1762
1763static int __init pc87360_init(void)
1764{
1765        int err, i;
1766        unsigned short address = 0;
1767
1768        if (pc87360_find(0x2e, &devid, extra_isa)
1769         && pc87360_find(0x4e, &devid, extra_isa)) {
1770                pr_warn("PC8736x not detected, module not inserted\n");
1771                return -ENODEV;
1772        }
1773
1774        /* Arbitrarily pick one of the addresses */
1775        for (i = 0; i < 3; i++) {
1776                if (extra_isa[i] != 0x0000) {
1777                        address = extra_isa[i];
1778                        break;
1779                }
1780        }
1781
1782        if (address == 0x0000) {
1783                pr_warn("No active logical device, module not inserted\n");
1784                return -ENODEV;
1785        }
1786
1787        err = platform_driver_register(&pc87360_driver);
1788        if (err)
1789                goto exit;
1790
1791        /* Sets global pdev as a side effect */
1792        err = pc87360_device_add(address);
1793        if (err)
1794                goto exit_driver;
1795
1796        return 0;
1797
1798 exit_driver:
1799        platform_driver_unregister(&pc87360_driver);
1800 exit:
1801        return err;
1802}
1803
1804static void __exit pc87360_exit(void)
1805{
1806        platform_device_unregister(pdev);
1807        platform_driver_unregister(&pc87360_driver);
1808}
1809
1810
1811MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
1812MODULE_DESCRIPTION("PC8736x hardware monitor");
1813MODULE_LICENSE("GPL");
1814
1815module_init(pc87360_init);
1816module_exit(pc87360_exit);
1817
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