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                .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        if (val > 255)
 619                return -EINVAL;
 620
 621        data->vrm = val;
 622        return count;
 623}
 624static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
 625
 626static ssize_t show_in_alarms(struct device *dev,
 627                              struct device_attribute *attr, char *buf)
 628{
 629        struct pc87360_data *data = pc87360_update_device(dev);
 630        return sprintf(buf, "%u\n", data->in_alarms);
 631}
 632static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
 633
 634static struct attribute *pc8736x_vin_attr_array[] = {
 635        VIN_UNIT_ATTRS(0),
 636        VIN_UNIT_ATTRS(1),
 637        VIN_UNIT_ATTRS(2),
 638        VIN_UNIT_ATTRS(3),
 639        VIN_UNIT_ATTRS(4),
 640        VIN_UNIT_ATTRS(5),
 641        VIN_UNIT_ATTRS(6),
 642        VIN_UNIT_ATTRS(7),
 643        VIN_UNIT_ATTRS(8),
 644        VIN_UNIT_ATTRS(9),
 645        VIN_UNIT_ATTRS(10),
 646        &dev_attr_cpu0_vid.attr,
 647        &dev_attr_vrm.attr,
 648        &dev_attr_alarms_in.attr,
 649        NULL
 650};
 651static const struct attribute_group pc8736x_vin_group = {
 652        .attrs = pc8736x_vin_attr_array,
 653};
 654
 655static ssize_t show_therm_input(struct device *dev,
 656                                struct device_attribute *devattr, char *buf)
 657{
 658        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 659        struct pc87360_data *data = pc87360_update_device(dev);
 660        return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
 661                       data->in_vref));
 662}
 663static ssize_t show_therm_min(struct device *dev,
 664                              struct device_attribute *devattr, char *buf)
 665{
 666        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 667        struct pc87360_data *data = pc87360_update_device(dev);
 668        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
 669                       data->in_vref));
 670}
 671static ssize_t show_therm_max(struct device *dev,
 672                              struct device_attribute *devattr, char *buf)
 673{
 674        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 675        struct pc87360_data *data = pc87360_update_device(dev);
 676        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
 677                       data->in_vref));
 678}
 679static ssize_t show_therm_crit(struct device *dev,
 680                               struct device_attribute *devattr, char *buf)
 681{
 682        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 683        struct pc87360_data *data = pc87360_update_device(dev);
 684        return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
 685                       data->in_vref));
 686}
 687static ssize_t show_therm_status(struct device *dev,
 688                                 struct device_attribute *devattr, char *buf)
 689{
 690        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 691        struct pc87360_data *data = pc87360_update_device(dev);
 692        return sprintf(buf, "%u\n", data->in_status[attr->index]);
 693}
 694
 695static ssize_t set_therm_min(struct device *dev,
 696                             struct device_attribute *devattr,
 697                             const char *buf, size_t count)
 698{
 699        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 700        struct pc87360_data *data = dev_get_drvdata(dev);
 701        long val;
 702        int err;
 703
 704        err = kstrtol(buf, 10, &val);
 705        if (err)
 706                return err;
 707
 708        mutex_lock(&data->update_lock);
 709        data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
 710        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
 711                            data->in_min[attr->index]);
 712        mutex_unlock(&data->update_lock);
 713        return count;
 714}
 715
 716static ssize_t set_therm_max(struct device *dev,
 717                             struct device_attribute *devattr,
 718                             const char *buf, size_t count)
 719{
 720        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 721        struct pc87360_data *data = dev_get_drvdata(dev);
 722        long val;
 723        int err;
 724
 725        err = kstrtol(buf, 10, &val);
 726        if (err)
 727                return err;
 728
 729        mutex_lock(&data->update_lock);
 730        data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
 731        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
 732                            data->in_max[attr->index]);
 733        mutex_unlock(&data->update_lock);
 734        return count;
 735}
 736static ssize_t set_therm_crit(struct device *dev,
 737                              struct device_attribute *devattr,
 738                              const char *buf, size_t count)
 739{
 740        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 741        struct pc87360_data *data = dev_get_drvdata(dev);
 742        long val;
 743        int err;
 744
 745        err = kstrtol(buf, 10, &val);
 746        if (err)
 747                return err;
 748
 749        mutex_lock(&data->update_lock);
 750        data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
 751        pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
 752                            data->in_crit[attr->index-11]);
 753        mutex_unlock(&data->update_lock);
 754        return count;
 755}
 756
 757/*
 758 * the +11 term below reflects the fact that VLM units 11,12,13 are
 759 * used in the chip to measure voltage across the thermistors
 760 */
 761static struct sensor_device_attribute therm_input[] = {
 762        SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0 + 11),
 763        SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1 + 11),
 764        SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2 + 11),
 765};
 766static struct sensor_device_attribute therm_status[] = {
 767        SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0 + 11),
 768        SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1 + 11),
 769        SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2 + 11),
 770};
 771static struct sensor_device_attribute therm_min[] = {
 772        SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
 773                    show_therm_min, set_therm_min, 0 + 11),
 774        SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
 775                    show_therm_min, set_therm_min, 1 + 11),
 776        SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
 777                    show_therm_min, set_therm_min, 2 + 11),
 778};
 779static struct sensor_device_attribute therm_max[] = {
 780        SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
 781                    show_therm_max, set_therm_max, 0 + 11),
 782        SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
 783                    show_therm_max, set_therm_max, 1 + 11),
 784        SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
 785                    show_therm_max, set_therm_max, 2 + 11),
 786};
 787static struct sensor_device_attribute therm_crit[] = {
 788        SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
 789                    show_therm_crit, set_therm_crit, 0 + 11),
 790        SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
 791                    show_therm_crit, set_therm_crit, 1 + 11),
 792        SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
 793                    show_therm_crit, set_therm_crit, 2 + 11),
 794};
 795
 796/*
 797 * show_therm_min/max_alarm() reads data from the per-channel voltage
 798 * status register (sec 11.5.12)
 799 */
 800
 801static ssize_t show_therm_min_alarm(struct device *dev,
 802                                struct device_attribute *devattr, char *buf)
 803{
 804        struct pc87360_data *data = pc87360_update_device(dev);
 805        unsigned nr = to_sensor_dev_attr(devattr)->index;
 806
 807        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
 808}
 809static ssize_t show_therm_max_alarm(struct device *dev,
 810                                struct device_attribute *devattr, char *buf)
 811{
 812        struct pc87360_data *data = pc87360_update_device(dev);
 813        unsigned nr = to_sensor_dev_attr(devattr)->index;
 814
 815        return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
 816}
 817static ssize_t show_therm_crit_alarm(struct device *dev,
 818                                struct device_attribute *devattr, char *buf)
 819{
 820        struct pc87360_data *data = pc87360_update_device(dev);
 821        unsigned nr = to_sensor_dev_attr(devattr)->index;
 822
 823        return sprintf(buf, "%u\n", !!(data->in_status[nr] & TEMP_ALM_CRIT));
 824}
 825
 826static struct sensor_device_attribute therm_min_alarm[] = {
 827        SENSOR_ATTR(temp4_min_alarm, S_IRUGO,
 828                    show_therm_min_alarm, NULL, 0 + 11),
 829        SENSOR_ATTR(temp5_min_alarm, S_IRUGO,
 830                    show_therm_min_alarm, NULL, 1 + 11),
 831        SENSOR_ATTR(temp6_min_alarm, S_IRUGO,
 832                    show_therm_min_alarm, NULL, 2 + 11),
 833};
 834static struct sensor_device_attribute therm_max_alarm[] = {
 835        SENSOR_ATTR(temp4_max_alarm, S_IRUGO,
 836                    show_therm_max_alarm, NULL, 0 + 11),
 837        SENSOR_ATTR(temp5_max_alarm, S_IRUGO,
 838                    show_therm_max_alarm, NULL, 1 + 11),
 839        SENSOR_ATTR(temp6_max_alarm, S_IRUGO,
 840                    show_therm_max_alarm, NULL, 2 + 11),
 841};
 842static struct sensor_device_attribute therm_crit_alarm[] = {
 843        SENSOR_ATTR(temp4_crit_alarm, S_IRUGO,
 844                    show_therm_crit_alarm, NULL, 0 + 11),
 845        SENSOR_ATTR(temp5_crit_alarm, S_IRUGO,
 846                    show_therm_crit_alarm, NULL, 1 + 11),
 847        SENSOR_ATTR(temp6_crit_alarm, S_IRUGO,
 848                    show_therm_crit_alarm, NULL, 2 + 11),
 849};
 850
 851#define THERM_UNIT_ATTRS(X) \
 852        &therm_input[X].dev_attr.attr,  \
 853        &therm_status[X].dev_attr.attr, \
 854        &therm_min[X].dev_attr.attr,    \
 855        &therm_max[X].dev_attr.attr,    \
 856        &therm_crit[X].dev_attr.attr,   \
 857        &therm_min_alarm[X].dev_attr.attr, \
 858        &therm_max_alarm[X].dev_attr.attr, \
 859        &therm_crit_alarm[X].dev_attr.attr
 860
 861static struct attribute *pc8736x_therm_attr_array[] = {
 862        THERM_UNIT_ATTRS(0),
 863        THERM_UNIT_ATTRS(1),
 864        THERM_UNIT_ATTRS(2),
 865        NULL
 866};
 867static const struct attribute_group pc8736x_therm_group = {
 868        .attrs = pc8736x_therm_attr_array,
 869};
 870
 871static ssize_t show_temp_input(struct device *dev,
 872                               struct device_attribute *devattr, char *buf)
 873{
 874        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 875        struct pc87360_data *data = pc87360_update_device(dev);
 876        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
 877}
 878
 879static ssize_t show_temp_min(struct device *dev,
 880                             struct device_attribute *devattr, char *buf)
 881{
 882        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 883        struct pc87360_data *data = pc87360_update_device(dev);
 884        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
 885}
 886
 887static ssize_t show_temp_max(struct device *dev,
 888                             struct device_attribute *devattr, char *buf)
 889{
 890        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 891        struct pc87360_data *data = pc87360_update_device(dev);
 892        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
 893}
 894
 895static ssize_t show_temp_crit(struct device *dev,
 896                              struct device_attribute *devattr, char *buf)
 897{
 898        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 899        struct pc87360_data *data = pc87360_update_device(dev);
 900        return sprintf(buf, "%d\n",
 901                       TEMP_FROM_REG(data->temp_crit[attr->index]));
 902}
 903
 904static ssize_t show_temp_status(struct device *dev,
 905                                struct device_attribute *devattr, char *buf)
 906{
 907        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 908        struct pc87360_data *data = pc87360_update_device(dev);
 909        return sprintf(buf, "%d\n", data->temp_status[attr->index]);
 910}
 911
 912static ssize_t set_temp_min(struct device *dev,
 913                            struct device_attribute *devattr,
 914                            const char *buf, size_t count)
 915{
 916        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 917        struct pc87360_data *data = dev_get_drvdata(dev);
 918        long val;
 919        int err;
 920
 921        err = kstrtol(buf, 10, &val);
 922        if (err)
 923                return err;
 924
 925        mutex_lock(&data->update_lock);
 926        data->temp_min[attr->index] = TEMP_TO_REG(val);
 927        pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
 928                            data->temp_min[attr->index]);
 929        mutex_unlock(&data->update_lock);
 930        return count;
 931}
 932
 933static ssize_t set_temp_max(struct device *dev,
 934                            struct device_attribute *devattr,
 935                            const char *buf, size_t count)
 936{
 937        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 938        struct pc87360_data *data = dev_get_drvdata(dev);
 939        long val;
 940        int err;
 941
 942        err = kstrtol(buf, 10, &val);
 943        if (err)
 944                return err;
 945
 946        mutex_lock(&data->update_lock);
 947        data->temp_max[attr->index] = TEMP_TO_REG(val);
 948        pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
 949                            data->temp_max[attr->index]);
 950        mutex_unlock(&data->update_lock);
 951        return count;
 952}
 953
 954static ssize_t set_temp_crit(struct device *dev,
 955                             struct device_attribute *devattr, const char *buf,
 956                             size_t count)
 957{
 958        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 959        struct pc87360_data *data = dev_get_drvdata(dev);
 960        long val;
 961        int err;
 962
 963        err = kstrtol(buf, 10, &val);
 964        if (err)
 965                return err;
 966
 967        mutex_lock(&data->update_lock);
 968        data->temp_crit[attr->index] = TEMP_TO_REG(val);
 969        pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
 970                            data->temp_crit[attr->index]);
 971        mutex_unlock(&data->update_lock);
 972        return count;
 973}
 974
 975static struct sensor_device_attribute temp_input[] = {
 976        SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
 977        SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
 978        SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
 979};
 980static struct sensor_device_attribute temp_status[] = {
 981        SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
 982        SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
 983        SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
 984};
 985static struct sensor_device_attribute temp_min[] = {
 986        SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
 987                    show_temp_min, set_temp_min, 0),
 988        SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
 989                    show_temp_min, set_temp_min, 1),
 990        SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
 991                    show_temp_min, set_temp_min, 2),
 992};
 993static struct sensor_device_attribute temp_max[] = {
 994        SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
 995                    show_temp_max, set_temp_max, 0),
 996        SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
 997                    show_temp_max, set_temp_max, 1),
 998        SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
 999                    show_temp_max, set_temp_max, 2),
1000};
1001static struct sensor_device_attribute temp_crit[] = {
1002        SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
1003                    show_temp_crit, set_temp_crit, 0),
1004        SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
1005                    show_temp_crit, set_temp_crit, 1),
1006        SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
1007                    show_temp_crit, set_temp_crit, 2),
1008};
1009
1010static ssize_t show_temp_alarms(struct device *dev,
1011                                struct device_attribute *attr, char *buf)
1012{
1013        struct pc87360_data *data = pc87360_update_device(dev);
1014        return sprintf(buf, "%u\n", data->temp_alarms);
1015}
1016
1017static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
1018
1019/*
1020 * show_temp_min/max_alarm() reads data from the per-channel status
1021 * register (sec 12.3.7), not the temp event status registers (sec
1022 * 12.3.2) that show_temp_alarm() reads (via data->temp_alarms)
1023 */
1024
1025static ssize_t show_temp_min_alarm(struct device *dev,
1026                        struct device_attribute *devattr, char *buf)
1027{
1028        struct pc87360_data *data = pc87360_update_device(dev);
1029        unsigned nr = to_sensor_dev_attr(devattr)->index;
1030
1031        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
1032}
1033
1034static ssize_t show_temp_max_alarm(struct device *dev,
1035                        struct device_attribute *devattr, char *buf)
1036{
1037        struct pc87360_data *data = pc87360_update_device(dev);
1038        unsigned nr = to_sensor_dev_attr(devattr)->index;
1039
1040        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
1041}
1042
1043static ssize_t show_temp_crit_alarm(struct device *dev,
1044                        struct device_attribute *devattr, char *buf)
1045{
1046        struct pc87360_data *data = pc87360_update_device(dev);
1047        unsigned nr = to_sensor_dev_attr(devattr)->index;
1048
1049        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
1050}
1051
1052static struct sensor_device_attribute temp_min_alarm[] = {
1053        SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 0),
1054        SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 1),
1055        SENSOR_ATTR(temp3_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 2),
1056};
1057
1058static struct sensor_device_attribute temp_max_alarm[] = {
1059        SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 0),
1060        SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 1),
1061        SENSOR_ATTR(temp3_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 2),
1062};
1063
1064static struct sensor_device_attribute temp_crit_alarm[] = {
1065        SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 0),
1066        SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 1),
1067        SENSOR_ATTR(temp3_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 2),
1068};
1069
1070#define TEMP_FAULT      0x40    /* open diode */
1071static ssize_t show_temp_fault(struct device *dev,
1072                        struct device_attribute *devattr, char *buf)
1073{
1074        struct pc87360_data *data = pc87360_update_device(dev);
1075        unsigned nr = to_sensor_dev_attr(devattr)->index;
1076
1077        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
1078}
1079static struct sensor_device_attribute temp_fault[] = {
1080        SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
1081        SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
1082        SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2),
1083};
1084
1085#define TEMP_UNIT_ATTRS(X)                      \
1086{       &temp_input[X].dev_attr.attr,           \
1087        &temp_status[X].dev_attr.attr,          \
1088        &temp_min[X].dev_attr.attr,             \
1089        &temp_max[X].dev_attr.attr,             \
1090        &temp_crit[X].dev_attr.attr,            \
1091        &temp_min_alarm[X].dev_attr.attr,       \
1092        &temp_max_alarm[X].dev_attr.attr,       \
1093        &temp_crit_alarm[X].dev_attr.attr,      \
1094        &temp_fault[X].dev_attr.attr,           \
1095        NULL                                    \
1096}
1097
1098static struct attribute *pc8736x_temp_attr[][10] = {
1099        TEMP_UNIT_ATTRS(0),
1100        TEMP_UNIT_ATTRS(1),
1101        TEMP_UNIT_ATTRS(2)
1102};
1103
1104static const struct attribute_group pc8736x_temp_attr_group[] = {
1105        { .attrs = pc8736x_temp_attr[0] },
1106        { .attrs = pc8736x_temp_attr[1] },
1107        { .attrs = pc8736x_temp_attr[2] }
1108};
1109
1110static ssize_t show_name(struct device *dev,
1111                        struct device_attribute *devattr, char *buf)
1112{
1113        struct pc87360_data *data = dev_get_drvdata(dev);
1114        return sprintf(buf, "%s\n", data->name);
1115}
1116
1117static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1118
1119/*
1120 * Device detection, registration and update
1121 */
1122
1123static int __init pc87360_find(int sioaddr, u8 *devid,
1124                               unsigned short *addresses)
1125{
1126        u16 val;
1127        int i;
1128        int nrdev; /* logical device count */
1129
1130        /* No superio_enter */
1131
1132        /* Identify device */
1133        val = force_id ? force_id : superio_inb(sioaddr, DEVID);
1134        switch (val) {
1135        case 0xE1: /* PC87360 */
1136        case 0xE8: /* PC87363 */
1137        case 0xE4: /* PC87364 */
1138                nrdev = 1;
1139                break;
1140        case 0xE5: /* PC87365 */
1141        case 0xE9: /* PC87366 */
1142                nrdev = 3;
1143                break;
1144        default:
1145                superio_exit(sioaddr);
1146                return -ENODEV;
1147        }
1148        /* Remember the device id */
1149        *devid = val;
1150
1151        for (i = 0; i < nrdev; i++) {
1152                /* select logical device */
1153                superio_outb(sioaddr, DEV, logdev[i]);
1154
1155                val = superio_inb(sioaddr, ACT);
1156                if (!(val & 0x01)) {
1157                        pr_info("Device 0x%02x not activated\n", logdev[i]);
1158                        continue;
1159                }
1160
1161                val = (superio_inb(sioaddr, BASE) << 8)
1162                    | superio_inb(sioaddr, BASE + 1);
1163                if (!val) {
1164                        pr_info("Base address not set for device 0x%02x\n",
1165                                logdev[i]);
1166                        continue;
1167                }
1168
1169                addresses[i] = val;
1170
1171                if (i == 0) { /* Fans */
1172                        confreg[0] = superio_inb(sioaddr, 0xF0);
1173                        confreg[1] = superio_inb(sioaddr, 0xF1);
1174
1175                        pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 1,
1176                                 (confreg[0] >> 2) & 1, (confreg[0] >> 3) & 1,
1177                                 (confreg[0] >> 4) & 1);
1178                        pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 2,
1179                                 (confreg[0] >> 5) & 1, (confreg[0] >> 6) & 1,
1180                                 (confreg[0] >> 7) & 1);
1181                        pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 3,
1182                                 confreg[1] & 1, (confreg[1] >> 1) & 1,
1183                                 (confreg[1] >> 2) & 1);
1184                } else if (i == 1) { /* Voltages */
1185                        /* Are we using thermistors? */
1186                        if (*devid == 0xE9) { /* PC87366 */
1187                                /*
1188                                 * These registers are not logical-device
1189                                 * specific, just that we won't need them if
1190                                 * we don't use the VLM device
1191                                 */
1192                                confreg[2] = superio_inb(sioaddr, 0x2B);
1193                                confreg[3] = superio_inb(sioaddr, 0x25);
1194
1195                                if (confreg[2] & 0x40) {
1196                                        pr_info("Using thermistors for temperature monitoring\n");
1197                                }
1198                                if (confreg[3] & 0xE0) {
1199                                        pr_info("VID inputs routed (mode %u)\n",
1200                                                confreg[3] >> 5);
1201                                }
1202                        }
1203                }
1204        }
1205
1206        superio_exit(sioaddr);
1207        return 0;
1208}
1209
1210static void pc87360_remove_files(struct device *dev)
1211{
1212        int i;
1213
1214        device_remove_file(dev, &dev_attr_name);
1215        device_remove_file(dev, &dev_attr_alarms_temp);
1216        for (i = 0; i < ARRAY_SIZE(pc8736x_temp_attr_group); i++)
1217                sysfs_remove_group(&dev->kobj, &pc8736x_temp_attr_group[i]);
1218        for (i = 0; i < ARRAY_SIZE(pc8736x_fan_attr_group); i++) {
1219                sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_attr_group[i]);
1220                device_remove_file(dev, &pwm[i].dev_attr);
1221        }
1222        sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
1223        sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
1224}
1225
1226static int pc87360_probe(struct platform_device *pdev)
1227{
1228        int i;
1229        struct pc87360_data *data;
1230        int err = 0;
1231        const char *name;
1232        int use_thermistors = 0;
1233        struct device *dev = &pdev->dev;
1234
1235        data = devm_kzalloc(dev, sizeof(struct pc87360_data), GFP_KERNEL);
1236        if (!data)
1237                return -ENOMEM;
1238
1239        switch (devid) {
1240        default:
1241                name = "pc87360";
1242                data->fannr = 2;
1243                break;
1244        case 0xe8:
1245                name = "pc87363";
1246                data->fannr = 2;
1247                break;
1248        case 0xe4:
1249                name = "pc87364";
1250                data->fannr = 3;
1251                break;
1252        case 0xe5:
1253                name = "pc87365";
1254                data->fannr = extra_isa[0] ? 3 : 0;
1255                data->innr = extra_isa[1] ? 11 : 0;
1256                data->tempnr = extra_isa[2] ? 2 : 0;
1257                break;
1258        case 0xe9:
1259                name = "pc87366";
1260                data->fannr = extra_isa[0] ? 3 : 0;
1261                data->innr = extra_isa[1] ? 14 : 0;
1262                data->tempnr = extra_isa[2] ? 3 : 0;
1263                break;
1264        }
1265
1266        data->name = name;
1267        mutex_init(&data->lock);
1268        mutex_init(&data->update_lock);
1269        platform_set_drvdata(pdev, data);
1270
1271        for (i = 0; i < LDNI_MAX; i++) {
1272                data->address[i] = extra_isa[i];
1273                if (data->address[i]
1274                 && !devm_request_region(dev, extra_isa[i], PC87360_EXTENT,
1275                                         pc87360_driver.driver.name)) {
1276                        dev_err(dev,
1277                                "Region 0x%x-0x%x already in use!\n",
1278                                extra_isa[i], extra_isa[i]+PC87360_EXTENT-1);
1279                        return -EBUSY;
1280                }
1281        }
1282
1283        /* Retrieve the fans configuration from Super-I/O space */
1284        if (data->fannr)
1285                data->fan_conf = confreg[0] | (confreg[1] << 8);
1286
1287        /*
1288         * Use the correct reference voltage
1289         * Unless both the VLM and the TMS logical devices agree to
1290         * use an external Vref, the internal one is used.
1291         */
1292        if (data->innr) {
1293                i = pc87360_read_value(data, LD_IN, NO_BANK,
1294                                       PC87365_REG_IN_CONFIG);
1295                if (data->tempnr) {
1296                        i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
1297                                                PC87365_REG_TEMP_CONFIG);
1298                }
1299                data->in_vref = (i&0x02) ? 3025 : 2966;
1300                dev_dbg(dev, "Using %s reference voltage\n",
1301                        (i&0x02) ? "external" : "internal");
1302
1303                data->vid_conf = confreg[3];
1304                data->vrm = vid_which_vrm();
1305        }
1306
1307        /* Fan clock dividers may be needed before any data is read */
1308        for (i = 0; i < data->fannr; i++) {
1309                if (FAN_CONFIG_MONITOR(data->fan_conf, i))
1310                        data->fan_status[i] = pc87360_read_value(data,
1311                                              LD_FAN, NO_BANK,
1312                                              PC87360_REG_FAN_STATUS(i));
1313        }
1314
1315        if (init > 0) {
1316                if (devid == 0xe9 && data->address[1]) /* PC87366 */
1317                        use_thermistors = confreg[2] & 0x40;
1318
1319                pc87360_init_device(pdev, use_thermistors);
1320        }
1321
1322        /* Register all-or-nothing sysfs groups */
1323
1324        if (data->innr) {
1325                err = sysfs_create_group(&dev->kobj, &pc8736x_vin_group);
1326                if (err)
1327                        goto error;
1328        }
1329
1330        if (data->innr == 14) {
1331                err = sysfs_create_group(&dev->kobj, &pc8736x_therm_group);
1332                if (err)
1333                        goto error;
1334        }
1335
1336        /* create device attr-files for varying sysfs groups */
1337
1338        if (data->tempnr) {
1339                for (i = 0; i < data->tempnr; i++) {
1340                        err = sysfs_create_group(&dev->kobj,
1341                                                 &pc8736x_temp_attr_group[i]);
1342                        if (err)
1343                                goto error;
1344                }
1345                err = device_create_file(dev, &dev_attr_alarms_temp);
1346                if (err)
1347                        goto error;
1348        }
1349
1350        for (i = 0; i < data->fannr; i++) {
1351                if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1352                        err = sysfs_create_group(&dev->kobj,
1353                                                 &pc8736x_fan_attr_group[i]);
1354                        if (err)
1355                                goto error;
1356                }
1357                if (FAN_CONFIG_CONTROL(data->fan_conf, i)) {
1358                        err = device_create_file(dev, &pwm[i].dev_attr);
1359                        if (err)
1360                                goto error;
1361                }
1362        }
1363
1364        err = device_create_file(dev, &dev_attr_name);
1365        if (err)
1366                goto error;
1367
1368        data->hwmon_dev = hwmon_device_register(dev);
1369        if (IS_ERR(data->hwmon_dev)) {
1370                err = PTR_ERR(data->hwmon_dev);
1371                goto error;
1372        }
1373        return 0;
1374
1375error:
1376        pc87360_remove_files(dev);
1377        return err;
1378}
1379
1380static int pc87360_remove(struct platform_device *pdev)
1381{
1382        struct pc87360_data *data = platform_get_drvdata(pdev);
1383
1384        hwmon_device_unregister(data->hwmon_dev);
1385        pc87360_remove_files(&pdev->dev);
1386
1387        return 0;
1388}
1389
1390/*
1391 * ldi is the logical device index
1392 * bank is for voltages and temperatures only
1393 */
1394static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1395                              u8 reg)
1396{
1397        int res;
1398
1399        mutex_lock(&(data->lock));
1400        if (bank != NO_BANK)
1401                outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1402        res = inb_p(data->address[ldi] + reg);
1403        mutex_unlock(&(data->lock));
1404
1405        return res;
1406}
1407
1408static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1409                                u8 reg, u8 value)
1410{
1411        mutex_lock(&(data->lock));
1412        if (bank != NO_BANK)
1413                outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1414        outb_p(value, data->address[ldi] + reg);
1415        mutex_unlock(&(data->lock));
1416}
1417
1418/* (temp & vin) channel conversion status register flags (pdf sec.11.5.12) */
1419#define CHAN_CNVRTD     0x80    /* new data ready */
1420#define CHAN_ENA        0x01    /* enabled channel (temp or vin) */
1421#define CHAN_ALM_ENA    0x10    /* propagate to alarms-reg ?? (chk val!) */
1422#define CHAN_READY      (CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
1423
1424#define TEMP_OTS_OE     0x20    /* OTS Output Enable */
1425#define VIN_RW1C_MASK   (CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN)   /* 0x87 */
1426#define TEMP_RW1C_MASK  (VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
1427
1428static void pc87360_init_device(struct platform_device *pdev,
1429                                int use_thermistors)
1430{
1431        struct pc87360_data *data = platform_get_drvdata(pdev);
1432        int i, nr;
1433        const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1434        const u8 init_temp[3] = { 2, 2, 1 };
1435        u8 reg;
1436
1437        if (init >= 2 && data->innr) {
1438                reg = pc87360_read_value(data, LD_IN, NO_BANK,
1439                                         PC87365_REG_IN_CONVRATE);
1440                dev_info(&pdev->dev,
1441                         "VLM conversion set to 1s period, 160us delay\n");
1442                pc87360_write_value(data, LD_IN, NO_BANK,
1443                                    PC87365_REG_IN_CONVRATE,
1444                                    (reg & 0xC0) | 0x11);
1445        }
1446
1447        nr = data->innr < 11 ? data->innr : 11;
1448        for (i = 0; i < nr; i++) {
1449                reg = pc87360_read_value(data, LD_IN, i,
1450                                         PC87365_REG_IN_STATUS);
1451                dev_dbg(&pdev->dev, "bios in%d status:0x%02x\n", i, reg);
1452                if (init >= init_in[i]) {
1453                        /* Forcibly enable voltage channel */
1454                        if (!(reg & CHAN_ENA)) {
1455                                dev_dbg(&pdev->dev, "Forcibly enabling in%d\n",
1456                                        i);
1457                                pc87360_write_value(data, LD_IN, i,
1458                                                    PC87365_REG_IN_STATUS,
1459                                                    (reg & 0x68) | 0x87);
1460                        }
1461                }
1462        }
1463
1464        /*
1465         * We can't blindly trust the Super-I/O space configuration bit,
1466         * most BIOS won't set it properly
1467         */
1468        dev_dbg(&pdev->dev, "bios thermistors:%d\n", use_thermistors);
1469        for (i = 11; i < data->innr; i++) {
1470                reg = pc87360_read_value(data, LD_IN, i,
1471                                         PC87365_REG_TEMP_STATUS);
1472                use_thermistors = use_thermistors || (reg & CHAN_ENA);
1473                /* thermistors are temp[4-6], measured on vin[11-14] */
1474                dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i-7, reg);
1475        }
1476        dev_dbg(&pdev->dev, "using thermistors:%d\n", use_thermistors);
1477
1478        i = use_thermistors ? 2 : 0;
1479        for (; i < data->tempnr; i++) {
1480                reg = pc87360_read_value(data, LD_TEMP, i,
1481                                         PC87365_REG_TEMP_STATUS);
1482                dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i + 1, reg);
1483                if (init >= init_temp[i]) {
1484                        /* Forcibly enable temperature channel */
1485                        if (!(reg & CHAN_ENA)) {
1486                                dev_dbg(&pdev->dev,
1487                                        "Forcibly enabling temp%d\n", i + 1);
1488                                pc87360_write_value(data, LD_TEMP, i,
1489                                                    PC87365_REG_TEMP_STATUS,
1490                                                    0xCF);
1491                        }
1492                }
1493        }
1494
1495        if (use_thermistors) {
1496                for (i = 11; i < data->innr; i++) {
1497                        if (init >= init_in[i]) {
1498                                /*
1499                                 * The pin may already be used by thermal
1500                                 * diodes
1501                                 */
1502                                reg = pc87360_read_value(data, LD_TEMP,
1503                                      (i - 11) / 2, PC87365_REG_TEMP_STATUS);
1504                                if (reg & CHAN_ENA) {
1505                                        dev_dbg(&pdev->dev,
1506                        "Skipping temp%d, pin already in use by temp%d\n",
1507                                                i - 7, (i - 11) / 2);
1508                                        continue;
1509                                }
1510
1511                                /* Forcibly enable thermistor channel */
1512                                reg = pc87360_read_value(data, LD_IN, i,
1513                                                         PC87365_REG_IN_STATUS);
1514                                if (!(reg & CHAN_ENA)) {
1515                                        dev_dbg(&pdev->dev,
1516                                                "Forcibly enabling temp%d\n",
1517                                                i - 7);
1518                                        pc87360_write_value(data, LD_IN, i,
1519                                                PC87365_REG_TEMP_STATUS,
1520                                                (reg & 0x60) | 0x8F);
1521                                }
1522                        }
1523                }
1524        }
1525
1526        if (data->innr) {
1527                reg = pc87360_read_value(data, LD_IN, NO_BANK,
1528                                         PC87365_REG_IN_CONFIG);
1529                dev_dbg(&pdev->dev, "bios vin-cfg:0x%02x\n", reg);
1530                if (reg & CHAN_ENA) {
1531                        dev_dbg(&pdev->dev,
1532                                "Forcibly enabling monitoring (VLM)\n");
1533                        pc87360_write_value(data, LD_IN, NO_BANK,
1534                                            PC87365_REG_IN_CONFIG,
1535                                            reg & 0xFE);
1536                }
1537        }
1538
1539        if (data->tempnr) {
1540                reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1541                                         PC87365_REG_TEMP_CONFIG);
1542                dev_dbg(&pdev->dev, "bios temp-cfg:0x%02x\n", reg);
1543                if (reg & CHAN_ENA) {
1544                        dev_dbg(&pdev->dev,
1545                                "Forcibly enabling monitoring (TMS)\n");
1546                        pc87360_write_value(data, LD_TEMP, NO_BANK,
1547                                            PC87365_REG_TEMP_CONFIG,
1548                                            reg & 0xFE);
1549                }
1550
1551                if (init >= 2) {
1552                        /* Chip config as documented by National Semi. */
1553                        pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1554                        /*
1555                         * We voluntarily omit the bank here, in case the
1556                         * sequence itself matters. It shouldn't be a problem,
1557                         * since nobody else is supposed to access the
1558                         * device at that point.
1559                         */
1560                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1561                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1562                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1563                        pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1564                }
1565        }
1566}
1567
1568static void pc87360_autodiv(struct device *dev, int nr)
1569{
1570        struct pc87360_data *data = dev_get_drvdata(dev);
1571        u8 old_min = data->fan_min[nr];
1572
1573        /* Increase clock divider if needed and possible */
1574        if ((data->fan_status[nr] & 0x04) /* overflow flag */
1575         || (data->fan[nr] >= 224)) { /* next to overflow */
1576                if ((data->fan_status[nr] & 0x60) != 0x60) {
1577                        data->fan_status[nr] += 0x20;
1578                        data->fan_min[nr] >>= 1;
1579                        data->fan[nr] >>= 1;
1580                        dev_dbg(dev,
1581                                "Increasing clock divider to %d for fan %d\n",
1582                                FAN_DIV_FROM_REG(data->fan_status[nr]), nr + 1);
1583                }
1584        } else {
1585                /* Decrease clock divider if possible */
1586                while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1587                 && data->fan[nr] < 85 /* bad accuracy */
1588                 && (data->fan_status[nr] & 0x60) != 0x00) {
1589                        data->fan_status[nr] -= 0x20;
1590                        data->fan_min[nr] <<= 1;
1591                        data->fan[nr] <<= 1;
1592                        dev_dbg(dev,
1593                                "Decreasing clock divider to %d for fan %d\n",
1594                                FAN_DIV_FROM_REG(data->fan_status[nr]),
1595                                nr + 1);
1596                }
1597        }
1598
1599        /* Write new fan min if it changed */
1600        if (old_min != data->fan_min[nr]) {
1601                pc87360_write_value(data, LD_FAN, NO_BANK,
1602                                    PC87360_REG_FAN_MIN(nr),
1603                                    data->fan_min[nr]);
1604        }
1605}
1606
1607static struct pc87360_data *pc87360_update_device(struct device *dev)
1608{
1609        struct pc87360_data *data = dev_get_drvdata(dev);
1610        u8 i;
1611
1612        mutex_lock(&data->update_lock);
1613
1614        if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1615                dev_dbg(dev, "Data update\n");
1616
1617                /* Fans */
1618                for (i = 0; i < data->fannr; i++) {
1619                        if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1620                                data->fan_status[i] =
1621                                        pc87360_read_value(data, LD_FAN,
1622                                        NO_BANK, PC87360_REG_FAN_STATUS(i));
1623                                data->fan[i] = pc87360_read_value(data, LD_FAN,
1624                                               NO_BANK, PC87360_REG_FAN(i));
1625                                data->fan_min[i] = pc87360_read_value(data,
1626                                                   LD_FAN, NO_BANK,
1627                                                   PC87360_REG_FAN_MIN(i));
1628                                /* Change clock divider if needed */
1629                                pc87360_autodiv(dev, i);
1630                                /* Clear bits and write new divider */
1631                                pc87360_write_value(data, LD_FAN, NO_BANK,
1632                                                    PC87360_REG_FAN_STATUS(i),
1633                                                    data->fan_status[i]);
1634                        }
1635                        if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1636                                data->pwm[i] = pc87360_read_value(data, LD_FAN,
1637                                               NO_BANK, PC87360_REG_PWM(i));
1638                }
1639
1640                /* Voltages */
1641                for (i = 0; i < data->innr; i++) {
1642                        data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1643                                             PC87365_REG_IN_STATUS);
1644                        /* Clear bits */
1645                        pc87360_write_value(data, LD_IN, i,
1646                                            PC87365_REG_IN_STATUS,
1647                                            data->in_status[i]);
1648                        if ((data->in_status[i] & CHAN_READY) == CHAN_READY) {
1649                                data->in[i] = pc87360_read_value(data, LD_IN,
1650                                              i, PC87365_REG_IN);
1651                        }
1652                        if (data->in_status[i] & CHAN_ENA) {
1653                                data->in_min[i] = pc87360_read_value(data,
1654                                                  LD_IN, i,
1655                                                  PC87365_REG_IN_MIN);
1656                                data->in_max[i] = pc87360_read_value(data,
1657                                                  LD_IN, i,
1658                                                  PC87365_REG_IN_MAX);
1659                                if (i >= 11)
1660                                        data->in_crit[i-11] =
1661                                                pc87360_read_value(data, LD_IN,
1662                                                i, PC87365_REG_TEMP_CRIT);
1663                        }
1664                }
1665                if (data->innr) {
1666                        data->in_alarms = pc87360_read_value(data, LD_IN,
1667                                          NO_BANK, PC87365_REG_IN_ALARMS1)
1668                                        | ((pc87360_read_value(data, LD_IN,
1669                                            NO_BANK, PC87365_REG_IN_ALARMS2)
1670                                            & 0x07) << 8);
1671                        data->vid = (data->vid_conf & 0xE0) ?
1672                                    pc87360_read_value(data, LD_IN,
1673                                    NO_BANK, PC87365_REG_VID) : 0x1F;
1674                }
1675
1676                /* Temperatures */
1677                for (i = 0; i < data->tempnr; i++) {
1678                        data->temp_status[i] = pc87360_read_value(data,
1679                                               LD_TEMP, i,
1680                                               PC87365_REG_TEMP_STATUS);
1681                        /* Clear bits */
1682                        pc87360_write_value(data, LD_TEMP, i,
1683                                            PC87365_REG_TEMP_STATUS,
1684                                            data->temp_status[i]);
1685                        if ((data->temp_status[i] & CHAN_READY) == CHAN_READY) {
1686                                data->temp[i] = pc87360_read_value(data,
1687                                                LD_TEMP, i,
1688                                                PC87365_REG_TEMP);
1689                        }
1690                        if (data->temp_status[i] & CHAN_ENA) {
1691                                data->temp_min[i] = pc87360_read_value(data,
1692                                                    LD_TEMP, i,
1693                                                    PC87365_REG_TEMP_MIN);
1694                                data->temp_max[i] = pc87360_read_value(data,
1695                                                    LD_TEMP, i,
1696                                                    PC87365_REG_TEMP_MAX);
1697                                data->temp_crit[i] = pc87360_read_value(data,
1698                                                     LD_TEMP, i,
1699                                                     PC87365_REG_TEMP_CRIT);
1700                        }
1701                }
1702                if (data->tempnr) {
1703                        data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1704                                            NO_BANK, PC87365_REG_TEMP_ALARMS)
1705                                            & 0x3F;
1706                }
1707
1708                data->last_updated = jiffies;
1709                data->valid = 1;
1710        }
1711
1712        mutex_unlock(&data->update_lock);
1713
1714        return data;
1715}
1716
1717static int __init pc87360_device_add(unsigned short address)
1718{
1719        struct resource res[3];
1720        int err, i, res_count;
1721
1722        pdev = platform_device_alloc("pc87360", address);
1723        if (!pdev) {
1724                err = -ENOMEM;
1725                pr_err("Device allocation failed\n");
1726                goto exit;
1727        }
1728
1729        memset(res, 0, 3 * sizeof(struct resource));
1730        res_count = 0;
1731        for (i = 0; i < 3; i++) {
1732                if (!extra_isa[i])
1733                        continue;
1734                res[res_count].start = extra_isa[i];
1735                res[res_count].end = extra_isa[i] + PC87360_EXTENT - 1;
1736                res[res_count].name = "pc87360",
1737                res[res_count].flags = IORESOURCE_IO,
1738
1739                err = acpi_check_resource_conflict(&res[res_count]);
1740                if (err)
1741                        goto exit_device_put;
1742
1743                res_count++;
1744        }
1745
1746        err = platform_device_add_resources(pdev, res, res_count);
1747        if (err) {
1748                pr_err("Device resources addition failed (%d)\n", err);
1749                goto exit_device_put;
1750        }
1751
1752        err = platform_device_add(pdev);
1753        if (err) {
1754                pr_err("Device addition failed (%d)\n", err);
1755                goto exit_device_put;
1756        }
1757
1758        return 0;
1759
1760exit_device_put:
1761        platform_device_put(pdev);
1762exit:
1763        return err;
1764}
1765
1766static int __init pc87360_init(void)
1767{
1768        int err, i;
1769        unsigned short address = 0;
1770
1771        if (pc87360_find(0x2e, &devid, extra_isa)
1772         && pc87360_find(0x4e, &devid, extra_isa)) {
1773                pr_warn("PC8736x not detected, module not inserted\n");
1774                return -ENODEV;
1775        }
1776
1777        /* Arbitrarily pick one of the addresses */
1778        for (i = 0; i < 3; i++) {
1779                if (extra_isa[i] != 0x0000) {
1780                        address = extra_isa[i];
1781                        break;
1782                }
1783        }
1784
1785        if (address == 0x0000) {
1786                pr_warn("No active logical device, module not inserted\n");
1787                return -ENODEV;
1788        }
1789
1790        err = platform_driver_register(&pc87360_driver);
1791        if (err)
1792                goto exit;
1793
1794        /* Sets global pdev as a side effect */
1795        err = pc87360_device_add(address);
1796        if (err)
1797                goto exit_driver;
1798
1799        return 0;
1800
1801 exit_driver:
1802        platform_driver_unregister(&pc87360_driver);
1803 exit:
1804        return err;
1805}
1806
1807static void __exit pc87360_exit(void)
1808{
1809        platform_device_unregister(pdev);
1810        platform_driver_unregister(&pc87360_driver);
1811}
1812
1813
1814MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
1815MODULE_DESCRIPTION("PC8736x hardware monitor");
1816MODULE_LICENSE("GPL");
1817
1818module_init(pc87360_init);
1819module_exit(pc87360_exit);
1820