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 <jdelvare@suse.de>
   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                .name   = "pc87360",
 248        },
 249        .probe          = pc87360_probe,
 250        .remove         = pc87360_remove,
 251};
 252
 253/*
 254 * Sysfs stuff
 255 */
 256
 257static ssize_t show_fan_input(struct device *dev,
 258                              struct device_attribute *devattr, char *buf)
 259{
 260        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 261        struct pc87360_data *data = pc87360_update_device(dev);
 262        return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
 263                       FAN_DIV_FROM_REG(data->fan_status[attr->index])));
 264}
 265static ssize_t show_fan_min(struct device *dev,
 266                            struct device_attribute *devattr, char *buf)
 267{
 268        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 269        struct pc87360_data *data = pc87360_update_device(dev);
 270        return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
 271                       FAN_DIV_FROM_REG(data->fan_status[attr->index])));
 272}
 273static ssize_t show_fan_div(struct device *dev,
 274                            struct device_attribute *devattr, char *buf)
 275{
 276        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 277        struct pc87360_data *data = pc87360_update_device(dev);
 278        return sprintf(buf, "%u\n",
 279                       FAN_DIV_FROM_REG(data->fan_status[attr->index]));
 280}
 281static ssize_t show_fan_status(struct device *dev,
 282                               struct device_attribute *devattr, char *buf)
 283{
 284        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 285        struct pc87360_data *data = pc87360_update_device(dev);
 286        return sprintf(buf, "%u\n",
 287                       FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
 288}
 289static ssize_t set_fan_min(struct device *dev,
 290                           struct device_attribute *devattr, const char *buf,
 291        size_t count)
 292{
 293        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 294        struct pc87360_data *data = dev_get_drvdata(dev);
 295        long fan_min;
 296        int err;
 297
 298        err = kstrtol(buf, 10, &fan_min);
 299        if (err)
 300                return err;
 301
 302        mutex_lock(&data->update_lock);
 303        fan_min = FAN_TO_REG(fan_min,
 304                             FAN_DIV_FROM_REG(data->fan_status[attr->index]));
 305
 306        /* If it wouldn't fit, change clock divisor */
 307        while (fan_min > 255
 308            && (data->fan_status[attr->index] & 0x60) != 0x60) {
 309                fan_min >>= 1;
 310                data->fan[attr->index] >>= 1;
 311                data->fan_status[attr->index] += 0x20;
 312        }
 313        data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
 314        pc87360_write_value(data, LD_FAN, NO_BANK,
 315                            PC87360_REG_FAN_MIN(attr->index),
 316                            data->fan_min[attr->index]);
 317
 318        /* Write new divider, preserve alarm bits */
 319        pc87360_write_value(data, LD_FAN, NO_BANK,
 320                            PC87360_REG_FAN_STATUS(attr->index),
 321                            data->fan_status[attr->index] & 0xF9);
 322        mutex_unlock(&data->update_lock);
 323
 324        return count;
 325}
 326
 327static struct sensor_device_attribute fan_input[] = {
 328        SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
 329        SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
 330        SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
 331};
 332static struct sensor_device_attribute fan_status[] = {
 333        SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
 334        SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
 335        SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
 336};
 337static struct sensor_device_attribute fan_div[] = {
 338        SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
 339        SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
 340        SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
 341};
 342static struct sensor_device_attribute fan_min[] = {
 343        SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
 344        SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
 345        SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
 346};
 347
 348#define FAN_UNIT_ATTRS(X)               \
 349{       &fan_input[X].dev_attr.attr,    \
 350        &fan_status[X].dev_attr.attr,   \
 351        &fan_div[X].dev_attr.attr,      \
 352        &fan_min[X].dev_attr.attr,      \
 353        NULL                            \
 354}
 355
 356static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
 357                        char *buf)
 358{
 359        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 360        struct pc87360_data *data = pc87360_update_device(dev);
 361        return sprintf(buf, "%u\n",
 362                       PWM_FROM_REG(data->pwm[attr->index],
 363                                    FAN_CONFIG_INVERT(data->fan_conf,
 364                                                      attr->index)));
 365}
 366static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
 367                       const char *buf, size_t count)
 368{
 369        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 370        struct pc87360_data *data = dev_get_drvdata(dev);
 371        long val;
 372        int err;
 373
 374        err = kstrtol(buf, 10, &val);
 375        if (err)
 376                return err;
 377
 378        mutex_lock(&data->update_lock);
 379        data->pwm[attr->index] = PWM_TO_REG(val,
 380                              FAN_CONFIG_INVERT(data->fan_conf, attr->index));
 381        pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
 382                            data->pwm[attr->index]);
 383        mutex_unlock(&data->update_lock);
 384        return count;
 385}
 386
 387static struct sensor_device_attribute pwm[] = {
 388        SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
 389        SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
 390        SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
 391};
 392
 393static struct attribute *pc8736x_fan_attr[][5] = {
 394        FAN_UNIT_ATTRS(0),
 395        FAN_UNIT_ATTRS(1),
 396        FAN_UNIT_ATTRS(2)
 397};
 398
 399static const struct attribute_group pc8736x_fan_attr_group[] = {
 400        { .attrs = pc8736x_fan_attr[0], },
 401        { .attrs = pc8736x_fan_attr[1], },
 402        { .attrs = pc8736x_fan_attr[2], },
 403};
 404
 405static ssize_t show_in_input(struct device *dev,
 406                             struct device_attribute *devattr, char *buf)
 407{
 408        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 409        struct pc87360_data *data = pc87360_update_device(dev);
 410        return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
 411                       data->in_vref));
 412}
 413static ssize_t show_in_min(struct device *dev,
 414                           struct device_attribute *devattr, char *buf)
 415{
 416        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 417        struct pc87360_data *data = pc87360_update_device(dev);
 418        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
 419                       data->in_vref));
 420}
 421static ssize_t show_in_max(struct device *dev,
 422                           struct device_attribute *devattr, char *buf)
 423{
 424        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 425        struct pc87360_data *data = pc87360_update_device(dev);
 426        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
 427                       data->in_vref));
 428}
 429static ssize_t show_in_status(struct device *dev,
 430                              struct device_attribute *devattr, char *buf)
 431{
 432        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 433        struct pc87360_data *data = pc87360_update_device(dev);
 434        return sprintf(buf, "%u\n", data->in_status[attr->index]);
 435}
 436static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr,
 437                          const char *buf, size_t count)
 438{
 439        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 440        struct pc87360_data *data = dev_get_drvdata(dev);
 441        long val;
 442        int err;
 443
 444        err = kstrtol(buf, 10, &val);
 445        if (err)
 446                return err;
 447
 448        mutex_lock(&data->update_lock);
 449        data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
 450        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
 451                            data->in_min[attr->index]);
 452        mutex_unlock(&data->update_lock);
 453        return count;
 454}
 455static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr,
 456                          const char *buf, size_t count)
 457{
 458        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 459        struct pc87360_data *data = dev_get_drvdata(dev);
 460        long val;
 461        int err;
 462
 463        err = kstrtol(buf, 10, &val);
 464        if (err)
 465                return err;
 466
 467        mutex_lock(&data->update_lock);
 468        data->in_max[attr->index] = IN_TO_REG(val,
 469                               data->in_vref);
 470        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
 471                            data->in_max[attr->index]);
 472        mutex_unlock(&data->update_lock);
 473        return count;
 474}
 475
 476static struct sensor_device_attribute in_input[] = {
 477        SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
 478        SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
 479        SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
 480        SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
 481        SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
 482        SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
 483        SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
 484        SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
 485        SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
 486        SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
 487        SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
 488};
 489static struct sensor_device_attribute in_status[] = {
 490        SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
 491        SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
 492        SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
 493        SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
 494        SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
 495        SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
 496        SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
 497        SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
 498        SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
 499        SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
 500        SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
 501};
 502static struct sensor_device_attribute in_min[] = {
 503        SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
 504        SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
 505        SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
 506        SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
 507        SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
 508        SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
 509        SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
 510        SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
 511        SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
 512        SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
 513        SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
 514};
 515static struct sensor_device_attribute in_max[] = {
 516        SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
 517        SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
 518        SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
 519        SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
 520        SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
 521        SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
 522        SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
 523        SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
 524        SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
 525        SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
 526        SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
 527};
 528
 529/* (temp & vin) channel status register alarm bits (pdf sec.11.5.12) */
 530#define CHAN_ALM_MIN    0x02    /* min limit crossed */
 531#define CHAN_ALM_MAX    0x04    /* max limit exceeded */
 532#define TEMP_ALM_CRIT   0x08    /* temp crit exceeded (temp only) */
 533
 534/*
 535 * show_in_min/max_alarm() reads data from the per-channel status
 536 * register (sec 11.5.12), not the vin event status registers (sec
 537 * 11.5.2) that (legacy) show_in_alarm() resds (via data->in_alarms)
 538 */
 539
 540static ssize_t show_in_min_alarm(struct device *dev,
 541                        struct device_attribute *devattr, char *buf)
 542{
 543        struct pc87360_data *data = pc87360_update_device(dev);
 544        unsigned nr = to_sensor_dev_attr(devattr)->index;
 545
 546        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
 547}
 548static ssize_t show_in_max_alarm(struct device *dev,
 549                        struct device_attribute *devattr, char *buf)
 550{
 551        struct pc87360_data *data = pc87360_update_device(dev);
 552        unsigned nr = to_sensor_dev_attr(devattr)->index;
 553
 554        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
 555}
 556
 557static struct sensor_device_attribute in_min_alarm[] = {
 558        SENSOR_ATTR(in0_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 0),
 559        SENSOR_ATTR(in1_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 1),
 560        SENSOR_ATTR(in2_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 2),
 561        SENSOR_ATTR(in3_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 3),
 562        SENSOR_ATTR(in4_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 4),
 563        SENSOR_ATTR(in5_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 5),
 564        SENSOR_ATTR(in6_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 6),
 565        SENSOR_ATTR(in7_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 7),
 566        SENSOR_ATTR(in8_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 8),
 567        SENSOR_ATTR(in9_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 9),
 568        SENSOR_ATTR(in10_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 10),
 569};
 570static struct sensor_device_attribute in_max_alarm[] = {
 571        SENSOR_ATTR(in0_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 0),
 572        SENSOR_ATTR(in1_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 1),
 573        SENSOR_ATTR(in2_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 2),
 574        SENSOR_ATTR(in3_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 3),
 575        SENSOR_ATTR(in4_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 4),
 576        SENSOR_ATTR(in5_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 5),
 577        SENSOR_ATTR(in6_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 6),
 578        SENSOR_ATTR(in7_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 7),
 579        SENSOR_ATTR(in8_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 8),
 580        SENSOR_ATTR(in9_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 9),
 581        SENSOR_ATTR(in10_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 10),
 582};
 583
 584#define VIN_UNIT_ATTRS(X) \
 585        &in_input[X].dev_attr.attr,     \
 586        &in_status[X].dev_attr.attr,    \
 587        &in_min[X].dev_attr.attr,       \
 588        &in_max[X].dev_attr.attr,       \
 589        &in_min_alarm[X].dev_attr.attr, \
 590        &in_max_alarm[X].dev_attr.attr
 591
 592static ssize_t cpu0_vid_show(struct device *dev,
 593                             struct device_attribute *attr, char *buf)
 594{
 595        struct pc87360_data *data = pc87360_update_device(dev);
 596        return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
 597}
 598static DEVICE_ATTR_RO(cpu0_vid);
 599
 600static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
 601                        char *buf)
 602{
 603        struct pc87360_data *data = dev_get_drvdata(dev);
 604        return sprintf(buf, "%u\n", data->vrm);
 605}
 606static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
 607                         const char *buf, size_t count)
 608{
 609        struct pc87360_data *data = dev_get_drvdata(dev);
 610        unsigned long val;
 611        int err;
 612
 613        err = kstrtoul(buf, 10, &val);
 614        if (err)
 615                return err;
 616
 617        if (val > 255)
 618                return -EINVAL;
 619
 620        data->vrm = val;
 621        return count;
 622}
 623static DEVICE_ATTR_RW(vrm);
 624
 625static ssize_t alarms_in_show(struct device *dev,
 626                              struct device_attribute *attr, char *buf)
 627{
 628        struct pc87360_data *data = pc87360_update_device(dev);
 629        return sprintf(buf, "%u\n", data->in_alarms);
 630}
 631static DEVICE_ATTR_RO(alarms_in);
 632
 633static struct attribute *pc8736x_vin_attr_array[] = {
 634        VIN_UNIT_ATTRS(0),
 635        VIN_UNIT_ATTRS(1),
 636        VIN_UNIT_ATTRS(2),
 637        VIN_UNIT_ATTRS(3),
 638        VIN_UNIT_ATTRS(4),
 639        VIN_UNIT_ATTRS(5),
 640        VIN_UNIT_ATTRS(6),
 641        VIN_UNIT_ATTRS(7),
 642        VIN_UNIT_ATTRS(8),
 643        VIN_UNIT_ATTRS(9),
 644        VIN_UNIT_ATTRS(10),
 645        &dev_attr_cpu0_vid.attr,
 646        &dev_attr_vrm.attr,
 647        &dev_attr_alarms_in.attr,
 648        NULL
 649};
 650static const struct attribute_group pc8736x_vin_group = {
 651        .attrs = pc8736x_vin_attr_array,
 652};
 653
 654static ssize_t show_therm_input(struct device *dev,
 655                                struct device_attribute *devattr, char *buf)
 656{
 657        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 658        struct pc87360_data *data = pc87360_update_device(dev);
 659        return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
 660                       data->in_vref));
 661}
 662static ssize_t show_therm_min(struct device *dev,
 663                              struct device_attribute *devattr, char *buf)
 664{
 665        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 666        struct pc87360_data *data = pc87360_update_device(dev);
 667        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
 668                       data->in_vref));
 669}
 670static ssize_t show_therm_max(struct device *dev,
 671                              struct device_attribute *devattr, char *buf)
 672{
 673        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 674        struct pc87360_data *data = pc87360_update_device(dev);
 675        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
 676                       data->in_vref));
 677}
 678static ssize_t show_therm_crit(struct device *dev,
 679                               struct device_attribute *devattr, char *buf)
 680{
 681        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 682        struct pc87360_data *data = pc87360_update_device(dev);
 683        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
 684                       data->in_vref));
 685}
 686static ssize_t show_therm_status(struct device *dev,
 687                                 struct device_attribute *devattr, char *buf)
 688{
 689        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 690        struct pc87360_data *data = pc87360_update_device(dev);
 691        return sprintf(buf, "%u\n", data->in_status[attr->index]);
 692}
 693
 694static ssize_t set_therm_min(struct device *dev,
 695                             struct device_attribute *devattr,
 696                             const char *buf, size_t count)
 697{
 698        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 699        struct pc87360_data *data = dev_get_drvdata(dev);
 700        long val;
 701        int err;
 702
 703        err = kstrtol(buf, 10, &val);
 704        if (err)
 705                return err;
 706
 707        mutex_lock(&data->update_lock);
 708        data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
 709        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
 710                            data->in_min[attr->index]);
 711        mutex_unlock(&data->update_lock);
 712        return count;
 713}
 714
 715static ssize_t set_therm_max(struct device *dev,
 716                             struct device_attribute *devattr,
 717                             const char *buf, size_t count)
 718{
 719        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 720        struct pc87360_data *data = dev_get_drvdata(dev);
 721        long val;
 722        int err;
 723
 724        err = kstrtol(buf, 10, &val);
 725        if (err)
 726                return err;
 727
 728        mutex_lock(&data->update_lock);
 729        data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
 730        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
 731                            data->in_max[attr->index]);
 732        mutex_unlock(&data->update_lock);
 733        return count;
 734}
 735static ssize_t set_therm_crit(struct device *dev,
 736                              struct device_attribute *devattr,
 737                              const char *buf, size_t count)
 738{
 739        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 740        struct pc87360_data *data = dev_get_drvdata(dev);
 741        long val;
 742        int err;
 743
 744        err = kstrtol(buf, 10, &val);
 745        if (err)
 746                return err;
 747
 748        mutex_lock(&data->update_lock);
 749        data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
 750        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
 751                            data->in_crit[attr->index-11]);
 752        mutex_unlock(&data->update_lock);
 753        return count;
 754}
 755
 756/*
 757 * the +11 term below reflects the fact that VLM units 11,12,13 are
 758 * used in the chip to measure voltage across the thermistors
 759 */
 760static struct sensor_device_attribute therm_input[] = {
 761        SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0 + 11),
 762        SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1 + 11),
 763        SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2 + 11),
 764};
 765static struct sensor_device_attribute therm_status[] = {
 766        SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0 + 11),
 767        SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1 + 11),
 768        SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2 + 11),
 769};
 770static struct sensor_device_attribute therm_min[] = {
 771        SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
 772                    show_therm_min, set_therm_min, 0 + 11),
 773        SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
 774                    show_therm_min, set_therm_min, 1 + 11),
 775        SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
 776                    show_therm_min, set_therm_min, 2 + 11),
 777};
 778static struct sensor_device_attribute therm_max[] = {
 779        SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
 780                    show_therm_max, set_therm_max, 0 + 11),
 781        SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
 782                    show_therm_max, set_therm_max, 1 + 11),
 783        SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
 784                    show_therm_max, set_therm_max, 2 + 11),
 785};
 786static struct sensor_device_attribute therm_crit[] = {
 787        SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
 788                    show_therm_crit, set_therm_crit, 0 + 11),
 789        SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
 790                    show_therm_crit, set_therm_crit, 1 + 11),
 791        SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
 792                    show_therm_crit, set_therm_crit, 2 + 11),
 793};
 794
 795/*
 796 * show_therm_min/max_alarm() reads data from the per-channel voltage
 797 * status register (sec 11.5.12)
 798 */
 799
 800static ssize_t show_therm_min_alarm(struct device *dev,
 801                                struct device_attribute *devattr, char *buf)
 802{
 803        struct pc87360_data *data = pc87360_update_device(dev);
 804        unsigned nr = to_sensor_dev_attr(devattr)->index;
 805
 806        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
 807}
 808static ssize_t show_therm_max_alarm(struct device *dev,
 809                                struct device_attribute *devattr, char *buf)
 810{
 811        struct pc87360_data *data = pc87360_update_device(dev);
 812        unsigned nr = to_sensor_dev_attr(devattr)->index;
 813
 814        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
 815}
 816static ssize_t show_therm_crit_alarm(struct device *dev,
 817                                struct device_attribute *devattr, char *buf)
 818{
 819        struct pc87360_data *data = pc87360_update_device(dev);
 820        unsigned nr = to_sensor_dev_attr(devattr)->index;
 821
 822        return sprintf(buf, "%u\n", !!(data->in_status[nr] & TEMP_ALM_CRIT));
 823}
 824
 825static struct sensor_device_attribute therm_min_alarm[] = {
 826        SENSOR_ATTR(temp4_min_alarm, S_IRUGO,
 827                    show_therm_min_alarm, NULL, 0 + 11),
 828        SENSOR_ATTR(temp5_min_alarm, S_IRUGO,
 829                    show_therm_min_alarm, NULL, 1 + 11),
 830        SENSOR_ATTR(temp6_min_alarm, S_IRUGO,
 831                    show_therm_min_alarm, NULL, 2 + 11),
 832};
 833static struct sensor_device_attribute therm_max_alarm[] = {
 834        SENSOR_ATTR(temp4_max_alarm, S_IRUGO,
 835                    show_therm_max_alarm, NULL, 0 + 11),
 836        SENSOR_ATTR(temp5_max_alarm, S_IRUGO,
 837                    show_therm_max_alarm, NULL, 1 + 11),
 838        SENSOR_ATTR(temp6_max_alarm, S_IRUGO,
 839                    show_therm_max_alarm, NULL, 2 + 11),
 840};
 841static struct sensor_device_attribute therm_crit_alarm[] = {
 842        SENSOR_ATTR(temp4_crit_alarm, S_IRUGO,
 843                    show_therm_crit_alarm, NULL, 0 + 11),
 844        SENSOR_ATTR(temp5_crit_alarm, S_IRUGO,
 845                    show_therm_crit_alarm, NULL, 1 + 11),
 846        SENSOR_ATTR(temp6_crit_alarm, S_IRUGO,
 847                    show_therm_crit_alarm, NULL, 2 + 11),
 848};
 849
 850#define THERM_UNIT_ATTRS(X) \
 851        &therm_input[X].dev_attr.attr,  \
 852        &therm_status[X].dev_attr.attr, \
 853        &therm_min[X].dev_attr.attr,    \
 854        &therm_max[X].dev_attr.attr,    \
 855        &therm_crit[X].dev_attr.attr,   \
 856        &therm_min_alarm[X].dev_attr.attr, \
 857        &therm_max_alarm[X].dev_attr.attr, \
 858        &therm_crit_alarm[X].dev_attr.attr
 859
 860static struct attribute *pc8736x_therm_attr_array[] = {
 861        THERM_UNIT_ATTRS(0),
 862        THERM_UNIT_ATTRS(1),
 863        THERM_UNIT_ATTRS(2),
 864        NULL
 865};
 866static const struct attribute_group pc8736x_therm_group = {
 867        .attrs = pc8736x_therm_attr_array,
 868};
 869
 870static ssize_t show_temp_input(struct device *dev,
 871                               struct device_attribute *devattr, char *buf)
 872{
 873        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 874        struct pc87360_data *data = pc87360_update_device(dev);
 875        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
 876}
 877
 878static ssize_t show_temp_min(struct device *dev,
 879                             struct device_attribute *devattr, char *buf)
 880{
 881        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 882        struct pc87360_data *data = pc87360_update_device(dev);
 883        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
 884}
 885
 886static ssize_t show_temp_max(struct device *dev,
 887                             struct device_attribute *devattr, char *buf)
 888{
 889        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 890        struct pc87360_data *data = pc87360_update_device(dev);
 891        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
 892}
 893
 894static ssize_t show_temp_crit(struct device *dev,
 895                              struct device_attribute *devattr, char *buf)
 896{
 897        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 898        struct pc87360_data *data = pc87360_update_device(dev);
 899        return sprintf(buf, "%d\n",
 900                       TEMP_FROM_REG(data->temp_crit[attr->index]));
 901}
 902
 903static ssize_t show_temp_status(struct device *dev,
 904                                struct device_attribute *devattr, char *buf)
 905{
 906        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 907        struct pc87360_data *data = pc87360_update_device(dev);
 908        return sprintf(buf, "%d\n", data->temp_status[attr->index]);
 909}
 910
 911static ssize_t set_temp_min(struct device *dev,
 912                            struct device_attribute *devattr,
 913                            const char *buf, size_t count)
 914{
 915        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 916        struct pc87360_data *data = dev_get_drvdata(dev);
 917        long val;
 918        int err;
 919
 920        err = kstrtol(buf, 10, &val);
 921        if (err)
 922                return err;
 923
 924        mutex_lock(&data->update_lock);
 925        data->temp_min[attr->index] = TEMP_TO_REG(val);
 926        pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
 927                            data->temp_min[attr->index]);
 928        mutex_unlock(&data->update_lock);
 929        return count;
 930}
 931
 932static ssize_t set_temp_max(struct device *dev,
 933                            struct device_attribute *devattr,
 934                            const char *buf, size_t count)
 935{
 936        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 937        struct pc87360_data *data = dev_get_drvdata(dev);
 938        long val;
 939        int err;
 940
 941        err = kstrtol(buf, 10, &val);
 942        if (err)
 943                return err;
 944
 945        mutex_lock(&data->update_lock);
 946        data->temp_max[attr->index] = TEMP_TO_REG(val);
 947        pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
 948                            data->temp_max[attr->index]);
 949        mutex_unlock(&data->update_lock);
 950        return count;
 951}
 952
 953static ssize_t set_temp_crit(struct device *dev,
 954                             struct device_attribute *devattr, const char *buf,
 955                             size_t count)
 956{
 957        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 958        struct pc87360_data *data = dev_get_drvdata(dev);
 959        long val;
 960        int err;
 961
 962        err = kstrtol(buf, 10, &val);
 963        if (err)
 964                return err;
 965
 966        mutex_lock(&data->update_lock);
 967        data->temp_crit[attr->index] = TEMP_TO_REG(val);
 968        pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
 969                            data->temp_crit[attr->index]);
 970        mutex_unlock(&data->update_lock);
 971        return count;
 972}
 973
 974static struct sensor_device_attribute temp_input[] = {
 975        SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
 976        SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
 977        SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
 978};
 979static struct sensor_device_attribute temp_status[] = {
 980        SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
 981        SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
 982        SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
 983};
 984static struct sensor_device_attribute temp_min[] = {
 985        SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
 986                    show_temp_min, set_temp_min, 0),
 987        SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
 988                    show_temp_min, set_temp_min, 1),
 989        SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
 990                    show_temp_min, set_temp_min, 2),
 991};
 992static struct sensor_device_attribute temp_max[] = {
 993        SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
 994                    show_temp_max, set_temp_max, 0),
 995        SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
 996                    show_temp_max, set_temp_max, 1),
 997        SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
 998                    show_temp_max, set_temp_max, 2),
 999};
1000static struct sensor_device_attribute temp_crit[] = {
1001        SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
1002                    show_temp_crit, set_temp_crit, 0),
1003        SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
1004                    show_temp_crit, set_temp_crit, 1),
1005        SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
1006                    show_temp_crit, set_temp_crit, 2),
1007};
1008
1009static ssize_t alarms_temp_show(struct device *dev,
1010                                struct device_attribute *attr, char *buf)
1011{
1012        struct pc87360_data *data = pc87360_update_device(dev);
1013        return sprintf(buf, "%u\n", data->temp_alarms);
1014}
1015
1016static DEVICE_ATTR_RO(alarms_temp);
1017
1018/*
1019 * show_temp_min/max_alarm() reads data from the per-channel status
1020 * register (sec 12.3.7), not the temp event status registers (sec
1021 * 12.3.2) that show_temp_alarm() reads (via data->temp_alarms)
1022 */
1023
1024static ssize_t show_temp_min_alarm(struct device *dev,
1025                        struct device_attribute *devattr, char *buf)
1026{
1027        struct pc87360_data *data = pc87360_update_device(dev);
1028        unsigned nr = to_sensor_dev_attr(devattr)->index;
1029
1030        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
1031}
1032
1033static ssize_t show_temp_max_alarm(struct device *dev,
1034                        struct device_attribute *devattr, char *buf)
1035{
1036        struct pc87360_data *data = pc87360_update_device(dev);
1037        unsigned nr = to_sensor_dev_attr(devattr)->index;
1038
1039        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
1040}
1041
1042static ssize_t show_temp_crit_alarm(struct device *dev,
1043                        struct device_attribute *devattr, char *buf)
1044{
1045        struct pc87360_data *data = pc87360_update_device(dev);
1046        unsigned nr = to_sensor_dev_attr(devattr)->index;
1047
1048        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
1049}
1050
1051static struct sensor_device_attribute temp_min_alarm[] = {
1052        SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 0),
1053        SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 1),
1054        SENSOR_ATTR(temp3_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 2),
1055};
1056
1057static struct sensor_device_attribute temp_max_alarm[] = {
1058        SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 0),
1059        SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 1),
1060        SENSOR_ATTR(temp3_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 2),
1061};
1062
1063static struct sensor_device_attribute temp_crit_alarm[] = {
1064        SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 0),
1065        SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 1),
1066        SENSOR_ATTR(temp3_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 2),
1067};
1068
1069#define TEMP_FAULT      0x40    /* open diode */
1070static ssize_t show_temp_fault(struct device *dev,
1071                        struct device_attribute *devattr, char *buf)
1072{
1073        struct pc87360_data *data = pc87360_update_device(dev);
1074        unsigned nr = to_sensor_dev_attr(devattr)->index;
1075
1076        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
1077}
1078static struct sensor_device_attribute temp_fault[] = {
1079        SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
1080        SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
1081        SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2),
1082};
1083
1084#define TEMP_UNIT_ATTRS(X)                      \
1085{       &temp_input[X].dev_attr.attr,           \
1086        &temp_status[X].dev_attr.attr,          \
1087        &temp_min[X].dev_attr.attr,             \
1088        &temp_max[X].dev_attr.attr,             \
1089        &temp_crit[X].dev_attr.attr,            \
1090        &temp_min_alarm[X].dev_attr.attr,       \
1091        &temp_max_alarm[X].dev_attr.attr,       \
1092        &temp_crit_alarm[X].dev_attr.attr,      \
1093        &temp_fault[X].dev_attr.attr,           \
1094        NULL                                    \
1095}
1096
1097static struct attribute *pc8736x_temp_attr[][10] = {
1098        TEMP_UNIT_ATTRS(0),
1099        TEMP_UNIT_ATTRS(1),
1100        TEMP_UNIT_ATTRS(2)
1101};
1102
1103static const struct attribute_group pc8736x_temp_attr_group[] = {
1104        { .attrs = pc8736x_temp_attr[0] },
1105        { .attrs = pc8736x_temp_attr[1] },
1106        { .attrs = pc8736x_temp_attr[2] }
1107};
1108
1109static ssize_t name_show(struct device *dev,
1110                        struct device_attribute *devattr, char *buf)
1111{
1112        struct pc87360_data *data = dev_get_drvdata(dev);
1113        return sprintf(buf, "%s\n", data->name);
1114}
1115
1116static DEVICE_ATTR_RO(name);
1117
1118/*
1119 * Device detection, registration and update
1120 */
1121
1122static int __init pc87360_find(int sioaddr, u8 *devid,
1123                               unsigned short *addresses)
1124{
1125        u16 val;
1126        int i;
1127        int nrdev; /* logical device count */
1128
1129        /* No superio_enter */
1130
1131        /* Identify device */
1132        val = force_id ? force_id : superio_inb(sioaddr, DEVID);
1133        switch (val) {
1134        case 0xE1: /* PC87360 */
1135        case 0xE8: /* PC87363 */
1136        case 0xE4: /* PC87364 */
1137                nrdev = 1;
1138                break;
1139        case 0xE5: /* PC87365 */
1140        case 0xE9: /* PC87366 */
1141                nrdev = 3;
1142                break;
1143        default:
1144                superio_exit(sioaddr);
1145                return -ENODEV;
1146        }
1147        /* Remember the device id */
1148        *devid = val;
1149
1150        for (i = 0; i < nrdev; i++) {
1151                /* select logical device */
1152                superio_outb(sioaddr, DEV, logdev[i]);
1153
1154                val = superio_inb(sioaddr, ACT);
1155                if (!(val & 0x01)) {
1156                        pr_info("Device 0x%02x not activated\n", logdev[i]);
1157                        continue;
1158                }
1159
1160                val = (superio_inb(sioaddr, BASE) << 8)
1161                    | superio_inb(sioaddr, BASE + 1);
1162                if (!val) {
1163                        pr_info("Base address not set for device 0x%02x\n",
1164                                logdev[i]);
1165                        continue;
1166                }
1167
1168                addresses[i] = val;
1169
1170                if (i == 0) { /* Fans */
1171                        confreg[0] = superio_inb(sioaddr, 0xF0);
1172                        confreg[1] = superio_inb(sioaddr, 0xF1);
1173
1174                        pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 1,
1175                                 (confreg[0] >> 2) & 1, (confreg[0] >> 3) & 1,
1176                                 (confreg[0] >> 4) & 1);
1177                        pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 2,
1178                                 (confreg[0] >> 5) & 1, (confreg[0] >> 6) & 1,
1179                                 (confreg[0] >> 7) & 1);
1180                        pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 3,
1181                                 confreg[1] & 1, (confreg[1] >> 1) & 1,
1182                                 (confreg[1] >> 2) & 1);
1183                } else if (i == 1) { /* Voltages */
1184                        /* Are we using thermistors? */
1185                        if (*devid == 0xE9) { /* PC87366 */
1186                                /*
1187                                 * These registers are not logical-device
1188                                 * specific, just that we won't need them if
1189                                 * we don't use the VLM device
1190                                 */
1191                                confreg[2] = superio_inb(sioaddr, 0x2B);
1192                                confreg[3] = superio_inb(sioaddr, 0x25);
1193
1194                                if (confreg[2] & 0x40) {
1195                                        pr_info("Using thermistors for temperature monitoring\n");
1196                                }
1197                                if (confreg[3] & 0xE0) {
1198                                        pr_info("VID inputs routed (mode %u)\n",
1199                                                confreg[3] >> 5);
1200                                }
1201                        }
1202                }
1203        }
1204
1205        superio_exit(sioaddr);
1206        return 0;
1207}
1208
1209static void pc87360_remove_files(struct device *dev)
1210{
1211        int i;
1212
1213        device_remove_file(dev, &dev_attr_name);
1214        device_remove_file(dev, &dev_attr_alarms_temp);
1215        for (i = 0; i < ARRAY_SIZE(pc8736x_temp_attr_group); i++)
1216                sysfs_remove_group(&dev->kobj, &pc8736x_temp_attr_group[i]);
1217        for (i = 0; i < ARRAY_SIZE(pc8736x_fan_attr_group); i++) {
1218                sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_attr_group[i]);
1219                device_remove_file(dev, &pwm[i].dev_attr);
1220        }
1221        sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
1222        sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
1223}
1224
1225static int pc87360_probe(struct platform_device *pdev)
1226{
1227        int i;
1228        struct pc87360_data *data;
1229        int err = 0;
1230        const char *name;
1231        int use_thermistors = 0;
1232        struct device *dev = &pdev->dev;
1233
1234        data = devm_kzalloc(dev, sizeof(struct pc87360_data), GFP_KERNEL);
1235        if (!data)
1236                return -ENOMEM;
1237
1238        switch (devid) {
1239        default:
1240                name = "pc87360";
1241                data->fannr = 2;
1242                break;
1243        case 0xe8:
1244                name = "pc87363";
1245                data->fannr = 2;
1246                break;
1247        case 0xe4:
1248                name = "pc87364";
1249                data->fannr = 3;
1250                break;
1251        case 0xe5:
1252                name = "pc87365";
1253                data->fannr = extra_isa[0] ? 3 : 0;
1254                data->innr = extra_isa[1] ? 11 : 0;
1255                data->tempnr = extra_isa[2] ? 2 : 0;
1256                break;
1257        case 0xe9:
1258                name = "pc87366";
1259                data->fannr = extra_isa[0] ? 3 : 0;
1260                data->innr = extra_isa[1] ? 14 : 0;
1261                data->tempnr = extra_isa[2] ? 3 : 0;
1262                break;
1263        }
1264
1265        data->name = name;
1266        mutex_init(&data->lock);
1267        mutex_init(&data->update_lock);
1268        platform_set_drvdata(pdev, data);
1269
1270        for (i = 0; i < LDNI_MAX; i++) {
1271                data->address[i] = extra_isa[i];
1272                if (data->address[i]
1273                 && !devm_request_region(dev, extra_isa[i], PC87360_EXTENT,
1274                                         pc87360_driver.driver.name)) {
1275                        dev_err(dev,
1276                                "Region 0x%x-0x%x already in use!\n",
1277                                extra_isa[i], extra_isa[i]+PC87360_EXTENT-1);
1278                        return -EBUSY;
1279                }
1280        }
1281
1282        /* Retrieve the fans configuration from Super-I/O space */
1283        if (data->fannr)
1284                data->fan_conf = confreg[0] | (confreg[1] << 8);
1285
1286        /*
1287         * Use the correct reference voltage
1288         * Unless both the VLM and the TMS logical devices agree to
1289         * use an external Vref, the internal one is used.
1290         */
1291        if (data->innr) {
1292                i = pc87360_read_value(data, LD_IN, NO_BANK,
1293                                       PC87365_REG_IN_CONFIG);
1294                if (data->tempnr) {
1295                        i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
1296                                                PC87365_REG_TEMP_CONFIG);
1297                }
1298                data->in_vref = (i&0x02) ? 3025 : 2966;
1299                dev_dbg(dev, "Using %s reference voltage\n",
1300                        (i&0x02) ? "external" : "internal");
1301
1302                data->vid_conf = confreg[3];
1303                data->vrm = vid_which_vrm();
1304        }
1305
1306        /* Fan clock dividers may be needed before any data is read */
1307        for (i = 0; i < data->fannr; i++) {
1308                if (FAN_CONFIG_MONITOR(data->fan_conf, i))
1309                        data->fan_status[i] = pc87360_read_value(data,
1310                                              LD_FAN, NO_BANK,
1311                                              PC87360_REG_FAN_STATUS(i));
1312        }
1313
1314        if (init > 0) {
1315                if (devid == 0xe9 && data->address[1]) /* PC87366 */
1316                        use_thermistors = confreg[2] & 0x40;
1317
1318                pc87360_init_device(pdev, use_thermistors);
1319        }
1320
1321        /* Register all-or-nothing sysfs groups */
1322
1323        if (data->innr) {
1324                err = sysfs_create_group(&dev->kobj, &pc8736x_vin_group);
1325                if (err)
1326                        goto error;
1327        }
1328
1329        if (data->innr == 14) {
1330                err = sysfs_create_group(&dev->kobj, &pc8736x_therm_group);
1331                if (err)
1332                        goto error;
1333        }
1334
1335        /* create device attr-files for varying sysfs groups */
1336
1337        if (data->tempnr) {
1338                for (i = 0; i < data->tempnr; i++) {
1339                        err = sysfs_create_group(&dev->kobj,
1340                                                 &pc8736x_temp_attr_group[i]);
1341                        if (err)
1342                                goto error;
1343                }
1344                err = device_create_file(dev, &dev_attr_alarms_temp);
1345                if (err)
1346                        goto error;
1347        }
1348
1349        for (i = 0; i < data->fannr; i++) {
1350                if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1351                        err = sysfs_create_group(&dev->kobj,
1352                                                 &pc8736x_fan_attr_group[i]);
1353                        if (err)
1354                                goto error;
1355                }
1356                if (FAN_CONFIG_CONTROL(data->fan_conf, i)) {
1357                        err = device_create_file(dev, &pwm[i].dev_attr);
1358                        if (err)
1359                                goto error;
1360                }
1361        }
1362
1363        err = device_create_file(dev, &dev_attr_name);
1364        if (err)
1365                goto error;
1366
1367        data->hwmon_dev = hwmon_device_register(dev);
1368        if (IS_ERR(data->hwmon_dev)) {
1369                err = PTR_ERR(data->hwmon_dev);
1370                goto error;
1371        }
1372        return 0;
1373
1374error:
1375        pc87360_remove_files(dev);
1376        return err;
1377}
1378
1379static int pc87360_remove(struct platform_device *pdev)
1380{
1381        struct pc87360_data *data = platform_get_drvdata(pdev);
1382
1383        hwmon_device_unregister(data->hwmon_dev);
1384        pc87360_remove_files(&pdev->dev);
1385
1386        return 0;
1387}
1388
1389/*
1390 * ldi is the logical device index
1391 * bank is for voltages and temperatures only
1392 */
1393static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1394                              u8 reg)
1395{
1396        int res;
1397
1398        mutex_lock(&(data->lock));
1399        if (bank != NO_BANK)
1400                outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1401        res = inb_p(data->address[ldi] + reg);
1402        mutex_unlock(&(data->lock));
1403
1404        return res;
1405}
1406
1407static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1408                                u8 reg, u8 value)
1409{
1410        mutex_lock(&(data->lock));
1411        if (bank != NO_BANK)
1412                outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1413        outb_p(value, data->address[ldi] + reg);
1414        mutex_unlock(&(data->lock));
1415}
1416
1417/* (temp & vin) channel conversion status register flags (pdf sec.11.5.12) */
1418#define CHAN_CNVRTD     0x80    /* new data ready */
1419#define CHAN_ENA        0x01    /* enabled channel (temp or vin) */
1420#define CHAN_ALM_ENA    0x10    /* propagate to alarms-reg ?? (chk val!) */
1421#define CHAN_READY      (CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
1422
1423#define TEMP_OTS_OE     0x20    /* OTS Output Enable */
1424#define VIN_RW1C_MASK   (CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN)   /* 0x87 */
1425#define TEMP_RW1C_MASK  (VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
1426
1427static void pc87360_init_device(struct platform_device *pdev,
1428                                int use_thermistors)
1429{
1430        struct pc87360_data *data = platform_get_drvdata(pdev);
1431        int i, nr;
1432        const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1433        const u8 init_temp[3] = { 2, 2, 1 };
1434        u8 reg;
1435
1436        if (init >= 2 && data->innr) {
1437                reg = pc87360_read_value(data, LD_IN, NO_BANK,
1438                                         PC87365_REG_IN_CONVRATE);
1439                dev_info(&pdev->dev,
1440                         "VLM conversion set to 1s period, 160us delay\n");
1441                pc87360_write_value(data, LD_IN, NO_BANK,
1442                                    PC87365_REG_IN_CONVRATE,
1443                                    (reg & 0xC0) | 0x11);
1444        }
1445
1446        nr = data->innr < 11 ? data->innr : 11;
1447        for (i = 0; i < nr; i++) {
1448                reg = pc87360_read_value(data, LD_IN, i,
1449                                         PC87365_REG_IN_STATUS);
1450                dev_dbg(&pdev->dev, "bios in%d status:0x%02x\n", i, reg);
1451                if (init >= init_in[i]) {
1452                        /* Forcibly enable voltage channel */
1453                        if (!(reg & CHAN_ENA)) {
1454                                dev_dbg(&pdev->dev, "Forcibly enabling in%d\n",
1455                                        i);
1456                                pc87360_write_value(data, LD_IN, i,
1457                                                    PC87365_REG_IN_STATUS,
1458                                                    (reg & 0x68) | 0x87);
1459                        }
1460                }
1461        }
1462
1463        /*
1464         * We can't blindly trust the Super-I/O space configuration bit,
1465         * most BIOS won't set it properly
1466         */
1467        dev_dbg(&pdev->dev, "bios thermistors:%d\n", use_thermistors);
1468        for (i = 11; i < data->innr; i++) {
1469                reg = pc87360_read_value(data, LD_IN, i,
1470                                         PC87365_REG_TEMP_STATUS);
1471                use_thermistors = use_thermistors || (reg & CHAN_ENA);
1472                /* thermistors are temp[4-6], measured on vin[11-14] */
1473                dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i-7, reg);
1474        }
1475        dev_dbg(&pdev->dev, "using thermistors:%d\n", use_thermistors);
1476
1477        i = use_thermistors ? 2 : 0;
1478        for (; i < data->tempnr; i++) {
1479                reg = pc87360_read_value(data, LD_TEMP, i,
1480                                         PC87365_REG_TEMP_STATUS);
1481                dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i + 1, reg);
1482                if (init >= init_temp[i]) {
1483                        /* Forcibly enable temperature channel */
1484                        if (!(reg & CHAN_ENA)) {
1485                                dev_dbg(&pdev->dev,
1486                                        "Forcibly enabling temp%d\n", i + 1);
1487                                pc87360_write_value(data, LD_TEMP, i,
1488                                                    PC87365_REG_TEMP_STATUS,
1489                                                    0xCF);
1490                        }
1491                }
1492        }
1493
1494        if (use_thermistors) {
1495                for (i = 11; i < data->innr; i++) {
1496                        if (init >= init_in[i]) {
1497                                /*
1498                                 * The pin may already be used by thermal
1499                                 * diodes
1500                                 */
1501                                reg = pc87360_read_value(data, LD_TEMP,
1502                                      (i - 11) / 2, PC87365_REG_TEMP_STATUS);
1503                                if (reg & CHAN_ENA) {
1504                                        dev_dbg(&pdev->dev,
1505                        "Skipping temp%d, pin already in use by temp%d\n",
1506                                                i - 7, (i - 11) / 2);
1507                                        continue;
1508                                }
1509
1510                                /* Forcibly enable thermistor channel */
1511                                reg = pc87360_read_value(data, LD_IN, i,
1512                                                         PC87365_REG_IN_STATUS);
1513                                if (!(reg & CHAN_ENA)) {
1514                                        dev_dbg(&pdev->dev,
1515                                                "Forcibly enabling temp%d\n",
1516                                                i - 7);
1517                                        pc87360_write_value(data, LD_IN, i,
1518                                                PC87365_REG_TEMP_STATUS,
1519                                                (reg & 0x60) | 0x8F);
1520                                }
1521                        }
1522                }
1523        }
1524
1525        if (data->innr) {
1526                reg = pc87360_read_value(data, LD_IN, NO_BANK,
1527                                         PC87365_REG_IN_CONFIG);
1528                dev_dbg(&pdev->dev, "bios vin-cfg:0x%02x\n", reg);
1529                if (reg & CHAN_ENA) {
1530                        dev_dbg(&pdev->dev,
1531                                "Forcibly enabling monitoring (VLM)\n");
1532                        pc87360_write_value(data, LD_IN, NO_BANK,
1533                                            PC87365_REG_IN_CONFIG,
1534                                            reg & 0xFE);
1535                }
1536        }
1537
1538        if (data->tempnr) {
1539                reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1540                                         PC87365_REG_TEMP_CONFIG);
1541                dev_dbg(&pdev->dev, "bios temp-cfg:0x%02x\n", reg);
1542                if (reg & CHAN_ENA) {
1543                        dev_dbg(&pdev->dev,
1544                                "Forcibly enabling monitoring (TMS)\n");
1545                        pc87360_write_value(data, LD_TEMP, NO_BANK,
1546                                            PC87365_REG_TEMP_CONFIG,
1547                                            reg & 0xFE);
1548                }
1549
1550                if (init >= 2) {
1551                        /* Chip config as documented by National Semi. */
1552                        pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1553                        /*
1554                         * We voluntarily omit the bank here, in case the
1555                         * sequence itself matters. It shouldn't be a problem,
1556                         * since nobody else is supposed to access the
1557                         * device at that point.
1558                         */
1559                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1560                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1561                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1562                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1563                }
1564        }
1565}
1566
1567static void pc87360_autodiv(struct device *dev, int nr)
1568{
1569        struct pc87360_data *data = dev_get_drvdata(dev);
1570        u8 old_min = data->fan_min[nr];
1571
1572        /* Increase clock divider if needed and possible */
1573        if ((data->fan_status[nr] & 0x04) /* overflow flag */
1574         || (data->fan[nr] >= 224)) { /* next to overflow */
1575                if ((data->fan_status[nr] & 0x60) != 0x60) {
1576                        data->fan_status[nr] += 0x20;
1577                        data->fan_min[nr] >>= 1;
1578                        data->fan[nr] >>= 1;
1579                        dev_dbg(dev,
1580                                "Increasing clock divider to %d for fan %d\n",
1581                                FAN_DIV_FROM_REG(data->fan_status[nr]), nr + 1);
1582                }
1583        } else {
1584                /* Decrease clock divider if possible */
1585                while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1586                 && data->fan[nr] < 85 /* bad accuracy */
1587                 && (data->fan_status[nr] & 0x60) != 0x00) {
1588                        data->fan_status[nr] -= 0x20;
1589                        data->fan_min[nr] <<= 1;
1590                        data->fan[nr] <<= 1;
1591                        dev_dbg(dev,
1592                                "Decreasing clock divider to %d for fan %d\n",
1593                                FAN_DIV_FROM_REG(data->fan_status[nr]),
1594                                nr + 1);
1595                }
1596        }
1597
1598        /* Write new fan min if it changed */
1599        if (old_min != data->fan_min[nr]) {
1600                pc87360_write_value(data, LD_FAN, NO_BANK,
1601                                    PC87360_REG_FAN_MIN(nr),
1602                                    data->fan_min[nr]);
1603        }
1604}
1605
1606static struct pc87360_data *pc87360_update_device(struct device *dev)
1607{
1608        struct pc87360_data *data = dev_get_drvdata(dev);
1609        u8 i;
1610
1611        mutex_lock(&data->update_lock);
1612
1613        if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1614                dev_dbg(dev, "Data update\n");
1615
1616                /* Fans */
1617                for (i = 0; i < data->fannr; i++) {
1618                        if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1619                                data->fan_status[i] =
1620                                        pc87360_read_value(data, LD_FAN,
1621                                        NO_BANK, PC87360_REG_FAN_STATUS(i));
1622                                data->fan[i] = pc87360_read_value(data, LD_FAN,
1623                                               NO_BANK, PC87360_REG_FAN(i));
1624                                data->fan_min[i] = pc87360_read_value(data,
1625                                                   LD_FAN, NO_BANK,
1626                                                   PC87360_REG_FAN_MIN(i));
1627                                /* Change clock divider if needed */
1628                                pc87360_autodiv(dev, i);
1629                                /* Clear bits and write new divider */
1630                                pc87360_write_value(data, LD_FAN, NO_BANK,
1631                                                    PC87360_REG_FAN_STATUS(i),
1632                                                    data->fan_status[i]);
1633                        }
1634                        if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1635                                data->pwm[i] = pc87360_read_value(data, LD_FAN,
1636                                               NO_BANK, PC87360_REG_PWM(i));
1637                }
1638
1639                /* Voltages */
1640                for (i = 0; i < data->innr; i++) {
1641                        data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1642                                             PC87365_REG_IN_STATUS);
1643                        /* Clear bits */
1644                        pc87360_write_value(data, LD_IN, i,
1645                                            PC87365_REG_IN_STATUS,
1646                                            data->in_status[i]);
1647                        if ((data->in_status[i] & CHAN_READY) == CHAN_READY) {
1648                                data->in[i] = pc87360_read_value(data, LD_IN,
1649                                              i, PC87365_REG_IN);
1650                        }
1651                        if (data->in_status[i] & CHAN_ENA) {
1652                                data->in_min[i] = pc87360_read_value(data,
1653                                                  LD_IN, i,
1654                                                  PC87365_REG_IN_MIN);
1655                                data->in_max[i] = pc87360_read_value(data,
1656                                                  LD_IN, i,
1657                                                  PC87365_REG_IN_MAX);
1658                                if (i >= 11)
1659                                        data->in_crit[i-11] =
1660                                                pc87360_read_value(data, LD_IN,
1661                                                i, PC87365_REG_TEMP_CRIT);
1662                        }
1663                }
1664                if (data->innr) {
1665                        data->in_alarms = pc87360_read_value(data, LD_IN,
1666                                          NO_BANK, PC87365_REG_IN_ALARMS1)
1667                                        | ((pc87360_read_value(data, LD_IN,
1668                                            NO_BANK, PC87365_REG_IN_ALARMS2)
1669                                            & 0x07) << 8);
1670                        data->vid = (data->vid_conf & 0xE0) ?
1671                                    pc87360_read_value(data, LD_IN,
1672                                    NO_BANK, PC87365_REG_VID) : 0x1F;
1673                }
1674
1675                /* Temperatures */
1676                for (i = 0; i < data->tempnr; i++) {
1677                        data->temp_status[i] = pc87360_read_value(data,
1678                                               LD_TEMP, i,
1679                                               PC87365_REG_TEMP_STATUS);
1680                        /* Clear bits */
1681                        pc87360_write_value(data, LD_TEMP, i,
1682                                            PC87365_REG_TEMP_STATUS,
1683                                            data->temp_status[i]);
1684                        if ((data->temp_status[i] & CHAN_READY) == CHAN_READY) {
1685                                data->temp[i] = pc87360_read_value(data,
1686                                                LD_TEMP, i,
1687                                                PC87365_REG_TEMP);
1688                        }
1689                        if (data->temp_status[i] & CHAN_ENA) {
1690                                data->temp_min[i] = pc87360_read_value(data,
1691                                                    LD_TEMP, i,
1692                                                    PC87365_REG_TEMP_MIN);
1693                                data->temp_max[i] = pc87360_read_value(data,
1694                                                    LD_TEMP, i,
1695                                                    PC87365_REG_TEMP_MAX);
1696                                data->temp_crit[i] = pc87360_read_value(data,
1697                                                     LD_TEMP, i,
1698                                                     PC87365_REG_TEMP_CRIT);
1699                        }
1700                }
1701                if (data->tempnr) {
1702                        data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1703                                            NO_BANK, PC87365_REG_TEMP_ALARMS)
1704                                            & 0x3F;
1705                }
1706
1707                data->last_updated = jiffies;
1708                data->valid = 1;
1709        }
1710
1711        mutex_unlock(&data->update_lock);
1712
1713        return data;
1714}
1715
1716static int __init pc87360_device_add(unsigned short address)
1717{
1718        struct resource res[3];
1719        int err, i, res_count;
1720
1721        pdev = platform_device_alloc("pc87360", address);
1722        if (!pdev) {
1723                err = -ENOMEM;
1724                pr_err("Device allocation failed\n");
1725                goto exit;
1726        }
1727
1728        memset(res, 0, 3 * sizeof(struct resource));
1729        res_count = 0;
1730        for (i = 0; i < 3; i++) {
1731                if (!extra_isa[i])
1732                        continue;
1733                res[res_count].start = extra_isa[i];
1734                res[res_count].end = extra_isa[i] + PC87360_EXTENT - 1;
1735                res[res_count].name = "pc87360",
1736                res[res_count].flags = IORESOURCE_IO,
1737
1738                err = acpi_check_resource_conflict(&res[res_count]);
1739                if (err)
1740                        goto exit_device_put;
1741
1742                res_count++;
1743        }
1744
1745        err = platform_device_add_resources(pdev, res, res_count);
1746        if (err) {
1747                pr_err("Device resources addition failed (%d)\n", err);
1748                goto exit_device_put;
1749        }
1750
1751        err = platform_device_add(pdev);
1752        if (err) {
1753                pr_err("Device addition failed (%d)\n", err);
1754                goto exit_device_put;
1755        }
1756
1757        return 0;
1758
1759exit_device_put:
1760        platform_device_put(pdev);
1761exit:
1762        return err;
1763}
1764
1765static int __init pc87360_init(void)
1766{
1767        int err, i;
1768        unsigned short address = 0;
1769
1770        if (pc87360_find(0x2e, &devid, extra_isa)
1771         && pc87360_find(0x4e, &devid, extra_isa)) {
1772                pr_warn("PC8736x not detected, module not inserted\n");
1773                return -ENODEV;
1774        }
1775
1776        /* Arbitrarily pick one of the addresses */
1777        for (i = 0; i < 3; i++) {
1778                if (extra_isa[i] != 0x0000) {
1779                        address = extra_isa[i];
1780                        break;
1781                }
1782        }
1783
1784        if (address == 0x0000) {
1785                pr_warn("No active logical device, module not inserted\n");
1786                return -ENODEV;
1787        }
1788
1789        err = platform_driver_register(&pc87360_driver);
1790        if (err)
1791                goto exit;
1792
1793        /* Sets global pdev as a side effect */
1794        err = pc87360_device_add(address);
1795        if (err)
1796                goto exit_driver;
1797
1798        return 0;
1799
1800 exit_driver:
1801        platform_driver_unregister(&pc87360_driver);
1802 exit:
1803        return err;
1804}
1805
1806static void __exit pc87360_exit(void)
1807{
1808        platform_device_unregister(pdev);
1809        platform_driver_unregister(&pc87360_driver);
1810}
1811
1812
1813MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
1814MODULE_DESCRIPTION("PC8736x hardware monitor");
1815MODULE_LICENSE("GPL");
1816
1817module_init(pc87360_init);
1818module_exit(pc87360_exit);
1819