linux/drivers/hwmon/it87.c
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   1/*
   2 *  it87.c - Part of lm_sensors, Linux kernel modules for hardware
   3 *           monitoring.
   4 *
   5 *  The IT8705F is an LPC-based Super I/O part that contains UARTs, a
   6 *  parallel port, an IR port, a MIDI port, a floppy controller, etc., in
   7 *  addition to an Environment Controller (Enhanced Hardware Monitor and
   8 *  Fan Controller)
   9 *
  10 *  This driver supports only the Environment Controller in the IT8705F and
  11 *  similar parts.  The other devices are supported by different drivers.
  12 *
  13 *  Supports: IT8705F  Super I/O chip w/LPC interface
  14 *            IT8712F  Super I/O chip w/LPC interface
  15 *            IT8716F  Super I/O chip w/LPC interface
  16 *            IT8718F  Super I/O chip w/LPC interface
  17 *            IT8720F  Super I/O chip w/LPC interface
  18 *            IT8721F  Super I/O chip w/LPC interface
  19 *            IT8726F  Super I/O chip w/LPC interface
  20 *            IT8728F  Super I/O chip w/LPC interface
  21 *            IT8758E  Super I/O chip w/LPC interface
  22 *            IT8782F  Super I/O chip w/LPC interface
  23 *            IT8783E/F Super I/O chip w/LPC interface
  24 *            Sis950   A clone of the IT8705F
  25 *
  26 *  Copyright (C) 2001 Chris Gauthron
  27 *  Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
  28 *
  29 *  This program is free software; you can redistribute it and/or modify
  30 *  it under the terms of the GNU General Public License as published by
  31 *  the Free Software Foundation; either version 2 of the License, or
  32 *  (at your option) any later version.
  33 *
  34 *  This program is distributed in the hope that it will be useful,
  35 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  36 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  37 *  GNU General Public License for more details.
  38 *
  39 *  You should have received a copy of the GNU General Public License
  40 *  along with this program; if not, write to the Free Software
  41 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  42 */
  43
  44#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  45
  46#include <linux/module.h>
  47#include <linux/init.h>
  48#include <linux/slab.h>
  49#include <linux/jiffies.h>
  50#include <linux/platform_device.h>
  51#include <linux/hwmon.h>
  52#include <linux/hwmon-sysfs.h>
  53#include <linux/hwmon-vid.h>
  54#include <linux/err.h>
  55#include <linux/mutex.h>
  56#include <linux/sysfs.h>
  57#include <linux/string.h>
  58#include <linux/dmi.h>
  59#include <linux/acpi.h>
  60#include <linux/io.h>
  61
  62#define DRVNAME "it87"
  63
  64enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8782,
  65             it8783 };
  66
  67static unsigned short force_id;
  68module_param(force_id, ushort, 0);
  69MODULE_PARM_DESC(force_id, "Override the detected device ID");
  70
  71static struct platform_device *pdev;
  72
  73#define REG     0x2e    /* The register to read/write */
  74#define DEV     0x07    /* Register: Logical device select */
  75#define VAL     0x2f    /* The value to read/write */
  76#define PME     0x04    /* The device with the fan registers in it */
  77
  78/* The device with the IT8718F/IT8720F VID value in it */
  79#define GPIO    0x07
  80
  81#define DEVID   0x20    /* Register: Device ID */
  82#define DEVREV  0x22    /* Register: Device Revision */
  83
  84static inline int superio_inb(int reg)
  85{
  86        outb(reg, REG);
  87        return inb(VAL);
  88}
  89
  90static inline void superio_outb(int reg, int val)
  91{
  92        outb(reg, REG);
  93        outb(val, VAL);
  94}
  95
  96static int superio_inw(int reg)
  97{
  98        int val;
  99        outb(reg++, REG);
 100        val = inb(VAL) << 8;
 101        outb(reg, REG);
 102        val |= inb(VAL);
 103        return val;
 104}
 105
 106static inline void superio_select(int ldn)
 107{
 108        outb(DEV, REG);
 109        outb(ldn, VAL);
 110}
 111
 112static inline int superio_enter(void)
 113{
 114        /*
 115         * Try to reserve REG and REG + 1 for exclusive access.
 116         */
 117        if (!request_muxed_region(REG, 2, DRVNAME))
 118                return -EBUSY;
 119
 120        outb(0x87, REG);
 121        outb(0x01, REG);
 122        outb(0x55, REG);
 123        outb(0x55, REG);
 124        return 0;
 125}
 126
 127static inline void superio_exit(void)
 128{
 129        outb(0x02, REG);
 130        outb(0x02, VAL);
 131        release_region(REG, 2);
 132}
 133
 134/* Logical device 4 registers */
 135#define IT8712F_DEVID 0x8712
 136#define IT8705F_DEVID 0x8705
 137#define IT8716F_DEVID 0x8716
 138#define IT8718F_DEVID 0x8718
 139#define IT8720F_DEVID 0x8720
 140#define IT8721F_DEVID 0x8721
 141#define IT8726F_DEVID 0x8726
 142#define IT8728F_DEVID 0x8728
 143#define IT8782F_DEVID 0x8782
 144#define IT8783E_DEVID 0x8783
 145#define IT87_ACT_REG  0x30
 146#define IT87_BASE_REG 0x60
 147
 148/* Logical device 7 registers (IT8712F and later) */
 149#define IT87_SIO_GPIO1_REG      0x25
 150#define IT87_SIO_GPIO3_REG      0x27
 151#define IT87_SIO_GPIO5_REG      0x29
 152#define IT87_SIO_PINX1_REG      0x2a    /* Pin selection */
 153#define IT87_SIO_PINX2_REG      0x2c    /* Pin selection */
 154#define IT87_SIO_SPI_REG        0xef    /* SPI function pin select */
 155#define IT87_SIO_VID_REG        0xfc    /* VID value */
 156#define IT87_SIO_BEEP_PIN_REG   0xf6    /* Beep pin mapping */
 157
 158/* Update battery voltage after every reading if true */
 159static bool update_vbat;
 160
 161/* Not all BIOSes properly configure the PWM registers */
 162static bool fix_pwm_polarity;
 163
 164/* Many IT87 constants specified below */
 165
 166/* Length of ISA address segment */
 167#define IT87_EXTENT 8
 168
 169/* Length of ISA address segment for Environmental Controller */
 170#define IT87_EC_EXTENT 2
 171
 172/* Offset of EC registers from ISA base address */
 173#define IT87_EC_OFFSET 5
 174
 175/* Where are the ISA address/data registers relative to the EC base address */
 176#define IT87_ADDR_REG_OFFSET 0
 177#define IT87_DATA_REG_OFFSET 1
 178
 179/*----- The IT87 registers -----*/
 180
 181#define IT87_REG_CONFIG        0x00
 182
 183#define IT87_REG_ALARM1        0x01
 184#define IT87_REG_ALARM2        0x02
 185#define IT87_REG_ALARM3        0x03
 186
 187/*
 188 * The IT8718F and IT8720F have the VID value in a different register, in
 189 * Super-I/O configuration space.
 190 */
 191#define IT87_REG_VID           0x0a
 192/*
 193 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
 194 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
 195 * mode.
 196 */
 197#define IT87_REG_FAN_DIV       0x0b
 198#define IT87_REG_FAN_16BIT     0x0c
 199
 200/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
 201
 202static const u8 IT87_REG_FAN[]          = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
 203static const u8 IT87_REG_FAN_MIN[]      = { 0x10, 0x11, 0x12, 0x84, 0x86 };
 204static const u8 IT87_REG_FANX[]         = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
 205static const u8 IT87_REG_FANX_MIN[]     = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
 206static const u8 IT87_REG_TEMP_OFFSET[]  = { 0x56, 0x57, 0x59 };
 207
 208#define IT87_REG_FAN_MAIN_CTRL 0x13
 209#define IT87_REG_FAN_CTL       0x14
 210#define IT87_REG_PWM(nr)       (0x15 + (nr))
 211#define IT87_REG_PWM_DUTY(nr)  (0x63 + (nr) * 8)
 212
 213#define IT87_REG_VIN(nr)       (0x20 + (nr))
 214#define IT87_REG_TEMP(nr)      (0x29 + (nr))
 215
 216#define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 217#define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 218#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
 219#define IT87_REG_TEMP_LOW(nr)  (0x41 + (nr) * 2)
 220
 221#define IT87_REG_VIN_ENABLE    0x50
 222#define IT87_REG_TEMP_ENABLE   0x51
 223#define IT87_REG_TEMP_EXTRA    0x55
 224#define IT87_REG_BEEP_ENABLE   0x5c
 225
 226#define IT87_REG_CHIPID        0x58
 227
 228#define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
 229#define IT87_REG_AUTO_PWM(nr, i)  (0x65 + (nr) * 8 + (i))
 230
 231struct it87_devices {
 232        const char *name;
 233        u16 features;
 234        u8 peci_mask;
 235        u8 old_peci_mask;
 236};
 237
 238#define FEAT_12MV_ADC           (1 << 0)
 239#define FEAT_NEWER_AUTOPWM      (1 << 1)
 240#define FEAT_OLD_AUTOPWM        (1 << 2)
 241#define FEAT_16BIT_FANS         (1 << 3)
 242#define FEAT_TEMP_OFFSET        (1 << 4)
 243#define FEAT_TEMP_PECI          (1 << 5)
 244#define FEAT_TEMP_OLD_PECI      (1 << 6)
 245
 246static const struct it87_devices it87_devices[] = {
 247        [it87] = {
 248                .name = "it87",
 249                .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
 250        },
 251        [it8712] = {
 252                .name = "it8712",
 253                .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
 254        },
 255        [it8716] = {
 256                .name = "it8716",
 257                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
 258        },
 259        [it8718] = {
 260                .name = "it8718",
 261                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 262                  | FEAT_TEMP_OLD_PECI,
 263                .old_peci_mask = 0x4,
 264        },
 265        [it8720] = {
 266                .name = "it8720",
 267                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 268                  | FEAT_TEMP_OLD_PECI,
 269                .old_peci_mask = 0x4,
 270        },
 271        [it8721] = {
 272                .name = "it8721",
 273                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 274                  | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI,
 275                .peci_mask = 0x05,
 276                .old_peci_mask = 0x02,  /* Actually reports PCH */
 277        },
 278        [it8728] = {
 279                .name = "it8728",
 280                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 281                  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 282                .peci_mask = 0x07,
 283        },
 284        [it8782] = {
 285                .name = "it8782",
 286                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 287                  | FEAT_TEMP_OLD_PECI,
 288                .old_peci_mask = 0x4,
 289        },
 290        [it8783] = {
 291                .name = "it8783",
 292                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 293                  | FEAT_TEMP_OLD_PECI,
 294                .old_peci_mask = 0x4,
 295        },
 296};
 297
 298#define has_16bit_fans(data)    ((data)->features & FEAT_16BIT_FANS)
 299#define has_12mv_adc(data)      ((data)->features & FEAT_12MV_ADC)
 300#define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
 301#define has_old_autopwm(data)   ((data)->features & FEAT_OLD_AUTOPWM)
 302#define has_temp_offset(data)   ((data)->features & FEAT_TEMP_OFFSET)
 303#define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
 304                                 ((data)->peci_mask & (1 << nr)))
 305#define has_temp_old_peci(data, nr) \
 306                                (((data)->features & FEAT_TEMP_OLD_PECI) && \
 307                                 ((data)->old_peci_mask & (1 << nr)))
 308
 309struct it87_sio_data {
 310        enum chips type;
 311        /* Values read from Super-I/O config space */
 312        u8 revision;
 313        u8 vid_value;
 314        u8 beep_pin;
 315        u8 internal;    /* Internal sensors can be labeled */
 316        /* Features skipped based on config or DMI */
 317        u16 skip_in;
 318        u8 skip_vid;
 319        u8 skip_fan;
 320        u8 skip_pwm;
 321        u8 skip_temp;
 322};
 323
 324/*
 325 * For each registered chip, we need to keep some data in memory.
 326 * The structure is dynamically allocated.
 327 */
 328struct it87_data {
 329        struct device *hwmon_dev;
 330        enum chips type;
 331        u16 features;
 332        u8 peci_mask;
 333        u8 old_peci_mask;
 334
 335        unsigned short addr;
 336        const char *name;
 337        struct mutex update_lock;
 338        char valid;             /* !=0 if following fields are valid */
 339        unsigned long last_updated;     /* In jiffies */
 340
 341        u16 in_scaled;          /* Internal voltage sensors are scaled */
 342        u8 in[9][3];            /* [nr][0]=in, [1]=min, [2]=max */
 343        u8 has_fan;             /* Bitfield, fans enabled */
 344        u16 fan[5][2];          /* Register values, [nr][0]=fan, [1]=min */
 345        u8 has_temp;            /* Bitfield, temp sensors enabled */
 346        s8 temp[3][4];          /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 347        u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
 348        u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
 349        u8 fan_div[3];          /* Register encoding, shifted right */
 350        u8 vid;                 /* Register encoding, combined */
 351        u8 vrm;
 352        u32 alarms;             /* Register encoding, combined */
 353        u8 beeps;               /* Register encoding */
 354        u8 fan_main_ctrl;       /* Register value */
 355        u8 fan_ctl;             /* Register value */
 356
 357        /*
 358         * The following 3 arrays correspond to the same registers up to
 359         * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 360         * 7, and we want to preserve settings on mode changes, so we have
 361         * to track all values separately.
 362         * Starting with the IT8721F, the manual PWM duty cycles are stored
 363         * in separate registers (8-bit values), so the separate tracking
 364         * is no longer needed, but it is still done to keep the driver
 365         * simple.
 366         */
 367        u8 pwm_ctrl[3];         /* Register value */
 368        u8 pwm_duty[3];         /* Manual PWM value set by user */
 369        u8 pwm_temp_map[3];     /* PWM to temp. chan. mapping (bits 1-0) */
 370
 371        /* Automatic fan speed control registers */
 372        u8 auto_pwm[3][4];      /* [nr][3] is hard-coded */
 373        s8 auto_temp[3][5];     /* [nr][0] is point1_temp_hyst */
 374};
 375
 376static int adc_lsb(const struct it87_data *data, int nr)
 377{
 378        int lsb = has_12mv_adc(data) ? 12 : 16;
 379        if (data->in_scaled & (1 << nr))
 380                lsb <<= 1;
 381        return lsb;
 382}
 383
 384static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 385{
 386        val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
 387        return SENSORS_LIMIT(val, 0, 255);
 388}
 389
 390static int in_from_reg(const struct it87_data *data, int nr, int val)
 391{
 392        return val * adc_lsb(data, nr);
 393}
 394
 395static inline u8 FAN_TO_REG(long rpm, int div)
 396{
 397        if (rpm == 0)
 398                return 255;
 399        rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 400        return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
 401                             254);
 402}
 403
 404static inline u16 FAN16_TO_REG(long rpm)
 405{
 406        if (rpm == 0)
 407                return 0xffff;
 408        return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 409}
 410
 411#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 412                                1350000 / ((val) * (div)))
 413/* The divider is fixed to 2 in 16-bit mode */
 414#define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 415                             1350000 / ((val) * 2))
 416
 417#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
 418                                        ((val) + 500) / 1000), -128, 127))
 419#define TEMP_FROM_REG(val) ((val) * 1000)
 420
 421static u8 pwm_to_reg(const struct it87_data *data, long val)
 422{
 423        if (has_newer_autopwm(data))
 424                return val;
 425        else
 426                return val >> 1;
 427}
 428
 429static int pwm_from_reg(const struct it87_data *data, u8 reg)
 430{
 431        if (has_newer_autopwm(data))
 432                return reg;
 433        else
 434                return (reg & 0x7f) << 1;
 435}
 436
 437
 438static int DIV_TO_REG(int val)
 439{
 440        int answer = 0;
 441        while (answer < 7 && (val >>= 1))
 442                answer++;
 443        return answer;
 444}
 445#define DIV_FROM_REG(val) (1 << (val))
 446
 447static const unsigned int pwm_freq[8] = {
 448        48000000 / 128,
 449        24000000 / 128,
 450        12000000 / 128,
 451        8000000 / 128,
 452        6000000 / 128,
 453        3000000 / 128,
 454        1500000 / 128,
 455        750000 / 128,
 456};
 457
 458static int it87_probe(struct platform_device *pdev);
 459static int it87_remove(struct platform_device *pdev);
 460
 461static int it87_read_value(struct it87_data *data, u8 reg);
 462static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
 463static struct it87_data *it87_update_device(struct device *dev);
 464static int it87_check_pwm(struct device *dev);
 465static void it87_init_device(struct platform_device *pdev);
 466
 467
 468static struct platform_driver it87_driver = {
 469        .driver = {
 470                .owner  = THIS_MODULE,
 471                .name   = DRVNAME,
 472        },
 473        .probe  = it87_probe,
 474        .remove = it87_remove,
 475};
 476
 477static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 478                       char *buf)
 479{
 480        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 481        int nr = sattr->nr;
 482        int index = sattr->index;
 483
 484        struct it87_data *data = it87_update_device(dev);
 485        return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 486}
 487
 488static ssize_t set_in(struct device *dev, struct device_attribute *attr,
 489                      const char *buf, size_t count)
 490{
 491        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 492        int nr = sattr->nr;
 493        int index = sattr->index;
 494
 495        struct it87_data *data = dev_get_drvdata(dev);
 496        unsigned long val;
 497
 498        if (kstrtoul(buf, 10, &val) < 0)
 499                return -EINVAL;
 500
 501        mutex_lock(&data->update_lock);
 502        data->in[nr][index] = in_to_reg(data, nr, val);
 503        it87_write_value(data,
 504                         index == 1 ? IT87_REG_VIN_MIN(nr)
 505                                    : IT87_REG_VIN_MAX(nr),
 506                         data->in[nr][index]);
 507        mutex_unlock(&data->update_lock);
 508        return count;
 509}
 510
 511static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 512static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 513                            0, 1);
 514static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 515                            0, 2);
 516
 517static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 518static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 519                            1, 1);
 520static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 521                            1, 2);
 522
 523static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 524static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 525                            2, 1);
 526static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 527                            2, 2);
 528
 529static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 530static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 531                            3, 1);
 532static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 533                            3, 2);
 534
 535static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 536static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 537                            4, 1);
 538static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 539                            4, 2);
 540
 541static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 542static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 543                            5, 1);
 544static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 545                            5, 2);
 546
 547static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 548static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 549                            6, 1);
 550static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 551                            6, 2);
 552
 553static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 554static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 555                            7, 1);
 556static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 557                            7, 2);
 558
 559static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 560
 561/* 3 temperatures */
 562static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 563                         char *buf)
 564{
 565        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 566        int nr = sattr->nr;
 567        int index = sattr->index;
 568        struct it87_data *data = it87_update_device(dev);
 569
 570        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 571}
 572
 573static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 574                        const char *buf, size_t count)
 575{
 576        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 577        int nr = sattr->nr;
 578        int index = sattr->index;
 579        struct it87_data *data = dev_get_drvdata(dev);
 580        long val;
 581        u8 reg, regval;
 582
 583        if (kstrtol(buf, 10, &val) < 0)
 584                return -EINVAL;
 585
 586        mutex_lock(&data->update_lock);
 587
 588        switch (index) {
 589        default:
 590        case 1:
 591                reg = IT87_REG_TEMP_LOW(nr);
 592                break;
 593        case 2:
 594                reg = IT87_REG_TEMP_HIGH(nr);
 595                break;
 596        case 3:
 597                regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 598                if (!(regval & 0x80)) {
 599                        regval |= 0x80;
 600                        it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 601                }
 602                data->valid = 0;
 603                reg = IT87_REG_TEMP_OFFSET[nr];
 604                break;
 605        }
 606
 607        data->temp[nr][index] = TEMP_TO_REG(val);
 608        it87_write_value(data, reg, data->temp[nr][index]);
 609        mutex_unlock(&data->update_lock);
 610        return count;
 611}
 612
 613static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
 614static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 615                            0, 1);
 616static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 617                            0, 2);
 618static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
 619                            set_temp, 0, 3);
 620static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
 621static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 622                            1, 1);
 623static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 624                            1, 2);
 625static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
 626                            set_temp, 1, 3);
 627static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
 628static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 629                            2, 1);
 630static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 631                            2, 2);
 632static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
 633                            set_temp, 2, 3);
 634
 635static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
 636                              char *buf)
 637{
 638        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 639        int nr = sensor_attr->index;
 640        struct it87_data *data = it87_update_device(dev);
 641        u8 reg = data->sensor;      /* In case value is updated while used */
 642        u8 extra = data->extra;
 643
 644        if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
 645            || (has_temp_old_peci(data, nr) && (extra & 0x80)))
 646                return sprintf(buf, "6\n");  /* Intel PECI */
 647        if (reg & (1 << nr))
 648                return sprintf(buf, "3\n");  /* thermal diode */
 649        if (reg & (8 << nr))
 650                return sprintf(buf, "4\n");  /* thermistor */
 651        return sprintf(buf, "0\n");      /* disabled */
 652}
 653
 654static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
 655                             const char *buf, size_t count)
 656{
 657        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 658        int nr = sensor_attr->index;
 659
 660        struct it87_data *data = dev_get_drvdata(dev);
 661        long val;
 662        u8 reg, extra;
 663
 664        if (kstrtol(buf, 10, &val) < 0)
 665                return -EINVAL;
 666
 667        reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 668        reg &= ~(1 << nr);
 669        reg &= ~(8 << nr);
 670        if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
 671                reg &= 0x3f;
 672        extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
 673        if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
 674                extra &= 0x7f;
 675        if (val == 2) { /* backwards compatibility */
 676                dev_warn(dev,
 677                         "Sensor type 2 is deprecated, please use 4 instead\n");
 678                val = 4;
 679        }
 680        /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
 681        if (val == 3)
 682                reg |= 1 << nr;
 683        else if (val == 4)
 684                reg |= 8 << nr;
 685        else if (has_temp_peci(data, nr) && val == 6)
 686                reg |= (nr + 1) << 6;
 687        else if (has_temp_old_peci(data, nr) && val == 6)
 688                extra |= 0x80;
 689        else if (val != 0)
 690                return -EINVAL;
 691
 692        mutex_lock(&data->update_lock);
 693        data->sensor = reg;
 694        data->extra = extra;
 695        it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
 696        if (has_temp_old_peci(data, nr))
 697                it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
 698        data->valid = 0;        /* Force cache refresh */
 699        mutex_unlock(&data->update_lock);
 700        return count;
 701}
 702
 703static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
 704                          set_temp_type, 0);
 705static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
 706                          set_temp_type, 1);
 707static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
 708                          set_temp_type, 2);
 709
 710/* 3 Fans */
 711
 712static int pwm_mode(const struct it87_data *data, int nr)
 713{
 714        int ctrl = data->fan_main_ctrl & (1 << nr);
 715
 716        if (ctrl == 0)                                  /* Full speed */
 717                return 0;
 718        if (data->pwm_ctrl[nr] & 0x80)                  /* Automatic mode */
 719                return 2;
 720        else                                            /* Manual mode */
 721                return 1;
 722}
 723
 724static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 725                        char *buf)
 726{
 727        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 728        int nr = sattr->nr;
 729        int index = sattr->index;
 730        int speed;
 731        struct it87_data *data = it87_update_device(dev);
 732
 733        speed = has_16bit_fans(data) ?
 734                FAN16_FROM_REG(data->fan[nr][index]) :
 735                FAN_FROM_REG(data->fan[nr][index],
 736                             DIV_FROM_REG(data->fan_div[nr]));
 737        return sprintf(buf, "%d\n", speed);
 738}
 739
 740static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 741                char *buf)
 742{
 743        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 744        int nr = sensor_attr->index;
 745
 746        struct it87_data *data = it87_update_device(dev);
 747        return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
 748}
 749static ssize_t show_pwm_enable(struct device *dev,
 750                struct device_attribute *attr, char *buf)
 751{
 752        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 753        int nr = sensor_attr->index;
 754
 755        struct it87_data *data = it87_update_device(dev);
 756        return sprintf(buf, "%d\n", pwm_mode(data, nr));
 757}
 758static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 759                char *buf)
 760{
 761        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 762        int nr = sensor_attr->index;
 763
 764        struct it87_data *data = it87_update_device(dev);
 765        return sprintf(buf, "%d\n",
 766                       pwm_from_reg(data, data->pwm_duty[nr]));
 767}
 768static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
 769                char *buf)
 770{
 771        struct it87_data *data = it87_update_device(dev);
 772        int index = (data->fan_ctl >> 4) & 0x07;
 773
 774        return sprintf(buf, "%u\n", pwm_freq[index]);
 775}
 776
 777static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 778                       const char *buf, size_t count)
 779{
 780        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 781        int nr = sattr->nr;
 782        int index = sattr->index;
 783
 784        struct it87_data *data = dev_get_drvdata(dev);
 785        long val;
 786        u8 reg;
 787
 788        if (kstrtol(buf, 10, &val) < 0)
 789                return -EINVAL;
 790
 791        mutex_lock(&data->update_lock);
 792
 793        if (has_16bit_fans(data)) {
 794                data->fan[nr][index] = FAN16_TO_REG(val);
 795                it87_write_value(data, IT87_REG_FAN_MIN[nr],
 796                                 data->fan[nr][index] & 0xff);
 797                it87_write_value(data, IT87_REG_FANX_MIN[nr],
 798                                 data->fan[nr][index] >> 8);
 799        } else {
 800                reg = it87_read_value(data, IT87_REG_FAN_DIV);
 801                switch (nr) {
 802                case 0:
 803                        data->fan_div[nr] = reg & 0x07;
 804                        break;
 805                case 1:
 806                        data->fan_div[nr] = (reg >> 3) & 0x07;
 807                        break;
 808                case 2:
 809                        data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
 810                        break;
 811                }
 812                data->fan[nr][index] =
 813                  FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 814                it87_write_value(data, IT87_REG_FAN_MIN[nr],
 815                                 data->fan[nr][index]);
 816        }
 817
 818        mutex_unlock(&data->update_lock);
 819        return count;
 820}
 821
 822static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 823                const char *buf, size_t count)
 824{
 825        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 826        int nr = sensor_attr->index;
 827
 828        struct it87_data *data = dev_get_drvdata(dev);
 829        unsigned long val;
 830        int min;
 831        u8 old;
 832
 833        if (kstrtoul(buf, 10, &val) < 0)
 834                return -EINVAL;
 835
 836        mutex_lock(&data->update_lock);
 837        old = it87_read_value(data, IT87_REG_FAN_DIV);
 838
 839        /* Save fan min limit */
 840        min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
 841
 842        switch (nr) {
 843        case 0:
 844        case 1:
 845                data->fan_div[nr] = DIV_TO_REG(val);
 846                break;
 847        case 2:
 848                if (val < 8)
 849                        data->fan_div[nr] = 1;
 850                else
 851                        data->fan_div[nr] = 3;
 852        }
 853        val = old & 0x80;
 854        val |= (data->fan_div[0] & 0x07);
 855        val |= (data->fan_div[1] & 0x07) << 3;
 856        if (data->fan_div[2] == 3)
 857                val |= 0x1 << 6;
 858        it87_write_value(data, IT87_REG_FAN_DIV, val);
 859
 860        /* Restore fan min limit */
 861        data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 862        it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
 863
 864        mutex_unlock(&data->update_lock);
 865        return count;
 866}
 867
 868/* Returns 0 if OK, -EINVAL otherwise */
 869static int check_trip_points(struct device *dev, int nr)
 870{
 871        const struct it87_data *data = dev_get_drvdata(dev);
 872        int i, err = 0;
 873
 874        if (has_old_autopwm(data)) {
 875                for (i = 0; i < 3; i++) {
 876                        if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
 877                                err = -EINVAL;
 878                }
 879                for (i = 0; i < 2; i++) {
 880                        if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
 881                                err = -EINVAL;
 882                }
 883        }
 884
 885        if (err) {
 886                dev_err(dev,
 887                        "Inconsistent trip points, not switching to automatic mode\n");
 888                dev_err(dev, "Adjust the trip points and try again\n");
 889        }
 890        return err;
 891}
 892
 893static ssize_t set_pwm_enable(struct device *dev,
 894                struct device_attribute *attr, const char *buf, size_t count)
 895{
 896        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 897        int nr = sensor_attr->index;
 898
 899        struct it87_data *data = dev_get_drvdata(dev);
 900        long val;
 901
 902        if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
 903                return -EINVAL;
 904
 905        /* Check trip points before switching to automatic mode */
 906        if (val == 2) {
 907                if (check_trip_points(dev, nr) < 0)
 908                        return -EINVAL;
 909        }
 910
 911        mutex_lock(&data->update_lock);
 912
 913        if (val == 0) {
 914                int tmp;
 915                /* make sure the fan is on when in on/off mode */
 916                tmp = it87_read_value(data, IT87_REG_FAN_CTL);
 917                it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
 918                /* set on/off mode */
 919                data->fan_main_ctrl &= ~(1 << nr);
 920                it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 921                                 data->fan_main_ctrl);
 922        } else {
 923                if (val == 1)                           /* Manual mode */
 924                        data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
 925                                             data->pwm_temp_map[nr] :
 926                                             data->pwm_duty[nr];
 927                else                                    /* Automatic mode */
 928                        data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
 929                it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
 930                /* set SmartGuardian mode */
 931                data->fan_main_ctrl |= (1 << nr);
 932                it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 933                                 data->fan_main_ctrl);
 934        }
 935
 936        mutex_unlock(&data->update_lock);
 937        return count;
 938}
 939static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 940                const char *buf, size_t count)
 941{
 942        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 943        int nr = sensor_attr->index;
 944
 945        struct it87_data *data = dev_get_drvdata(dev);
 946        long val;
 947
 948        if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
 949                return -EINVAL;
 950
 951        mutex_lock(&data->update_lock);
 952        if (has_newer_autopwm(data)) {
 953                /*
 954                 * If we are in automatic mode, the PWM duty cycle register
 955                 * is read-only so we can't write the value.
 956                 */
 957                if (data->pwm_ctrl[nr] & 0x80) {
 958                        mutex_unlock(&data->update_lock);
 959                        return -EBUSY;
 960                }
 961                data->pwm_duty[nr] = pwm_to_reg(data, val);
 962                it87_write_value(data, IT87_REG_PWM_DUTY(nr),
 963                                 data->pwm_duty[nr]);
 964        } else {
 965                data->pwm_duty[nr] = pwm_to_reg(data, val);
 966                /*
 967                 * If we are in manual mode, write the duty cycle immediately;
 968                 * otherwise, just store it for later use.
 969                 */
 970                if (!(data->pwm_ctrl[nr] & 0x80)) {
 971                        data->pwm_ctrl[nr] = data->pwm_duty[nr];
 972                        it87_write_value(data, IT87_REG_PWM(nr),
 973                                         data->pwm_ctrl[nr]);
 974                }
 975        }
 976        mutex_unlock(&data->update_lock);
 977        return count;
 978}
 979static ssize_t set_pwm_freq(struct device *dev,
 980                struct device_attribute *attr, const char *buf, size_t count)
 981{
 982        struct it87_data *data = dev_get_drvdata(dev);
 983        unsigned long val;
 984        int i;
 985
 986        if (kstrtoul(buf, 10, &val) < 0)
 987                return -EINVAL;
 988
 989        /* Search for the nearest available frequency */
 990        for (i = 0; i < 7; i++) {
 991                if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
 992                        break;
 993        }
 994
 995        mutex_lock(&data->update_lock);
 996        data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
 997        data->fan_ctl |= i << 4;
 998        it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
 999        mutex_unlock(&data->update_lock);
1000
1001        return count;
1002}
1003static ssize_t show_pwm_temp_map(struct device *dev,
1004                struct device_attribute *attr, char *buf)
1005{
1006        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1007        int nr = sensor_attr->index;
1008
1009        struct it87_data *data = it87_update_device(dev);
1010        int map;
1011
1012        if (data->pwm_temp_map[nr] < 3)
1013                map = 1 << data->pwm_temp_map[nr];
1014        else
1015                map = 0;                        /* Should never happen */
1016        return sprintf(buf, "%d\n", map);
1017}
1018static ssize_t set_pwm_temp_map(struct device *dev,
1019                struct device_attribute *attr, const char *buf, size_t count)
1020{
1021        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1022        int nr = sensor_attr->index;
1023
1024        struct it87_data *data = dev_get_drvdata(dev);
1025        long val;
1026        u8 reg;
1027
1028        /*
1029         * This check can go away if we ever support automatic fan speed
1030         * control on newer chips.
1031         */
1032        if (!has_old_autopwm(data)) {
1033                dev_notice(dev, "Mapping change disabled for safety reasons\n");
1034                return -EINVAL;
1035        }
1036
1037        if (kstrtol(buf, 10, &val) < 0)
1038                return -EINVAL;
1039
1040        switch (val) {
1041        case (1 << 0):
1042                reg = 0x00;
1043                break;
1044        case (1 << 1):
1045                reg = 0x01;
1046                break;
1047        case (1 << 2):
1048                reg = 0x02;
1049                break;
1050        default:
1051                return -EINVAL;
1052        }
1053
1054        mutex_lock(&data->update_lock);
1055        data->pwm_temp_map[nr] = reg;
1056        /*
1057         * If we are in automatic mode, write the temp mapping immediately;
1058         * otherwise, just store it for later use.
1059         */
1060        if (data->pwm_ctrl[nr] & 0x80) {
1061                data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1062                it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1063        }
1064        mutex_unlock(&data->update_lock);
1065        return count;
1066}
1067
1068static ssize_t show_auto_pwm(struct device *dev,
1069                struct device_attribute *attr, char *buf)
1070{
1071        struct it87_data *data = it87_update_device(dev);
1072        struct sensor_device_attribute_2 *sensor_attr =
1073                        to_sensor_dev_attr_2(attr);
1074        int nr = sensor_attr->nr;
1075        int point = sensor_attr->index;
1076
1077        return sprintf(buf, "%d\n",
1078                       pwm_from_reg(data, data->auto_pwm[nr][point]));
1079}
1080
1081static ssize_t set_auto_pwm(struct device *dev,
1082                struct device_attribute *attr, const char *buf, size_t count)
1083{
1084        struct it87_data *data = dev_get_drvdata(dev);
1085        struct sensor_device_attribute_2 *sensor_attr =
1086                        to_sensor_dev_attr_2(attr);
1087        int nr = sensor_attr->nr;
1088        int point = sensor_attr->index;
1089        long val;
1090
1091        if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1092                return -EINVAL;
1093
1094        mutex_lock(&data->update_lock);
1095        data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1096        it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1097                         data->auto_pwm[nr][point]);
1098        mutex_unlock(&data->update_lock);
1099        return count;
1100}
1101
1102static ssize_t show_auto_temp(struct device *dev,
1103                struct device_attribute *attr, char *buf)
1104{
1105        struct it87_data *data = it87_update_device(dev);
1106        struct sensor_device_attribute_2 *sensor_attr =
1107                        to_sensor_dev_attr_2(attr);
1108        int nr = sensor_attr->nr;
1109        int point = sensor_attr->index;
1110
1111        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1112}
1113
1114static ssize_t set_auto_temp(struct device *dev,
1115                struct device_attribute *attr, const char *buf, size_t count)
1116{
1117        struct it87_data *data = dev_get_drvdata(dev);
1118        struct sensor_device_attribute_2 *sensor_attr =
1119                        to_sensor_dev_attr_2(attr);
1120        int nr = sensor_attr->nr;
1121        int point = sensor_attr->index;
1122        long val;
1123
1124        if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1125                return -EINVAL;
1126
1127        mutex_lock(&data->update_lock);
1128        data->auto_temp[nr][point] = TEMP_TO_REG(val);
1129        it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1130                         data->auto_temp[nr][point]);
1131        mutex_unlock(&data->update_lock);
1132        return count;
1133}
1134
1135static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1136static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1137                            0, 1);
1138static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1139                          set_fan_div, 0);
1140
1141static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1142static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1143                            1, 1);
1144static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1145                          set_fan_div, 1);
1146
1147static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1148static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1149                            2, 1);
1150static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1151                          set_fan_div, 2);
1152
1153static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1154static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1155                            3, 1);
1156
1157static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1158static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1159                            4, 1);
1160
1161static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1162                          show_pwm_enable, set_pwm_enable, 0);
1163static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1164static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1165static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1166                          show_pwm_temp_map, set_pwm_temp_map, 0);
1167static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1168                            show_auto_pwm, set_auto_pwm, 0, 0);
1169static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1170                            show_auto_pwm, set_auto_pwm, 0, 1);
1171static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1172                            show_auto_pwm, set_auto_pwm, 0, 2);
1173static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1174                            show_auto_pwm, NULL, 0, 3);
1175static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1176                            show_auto_temp, set_auto_temp, 0, 1);
1177static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1178                            show_auto_temp, set_auto_temp, 0, 0);
1179static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1180                            show_auto_temp, set_auto_temp, 0, 2);
1181static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1182                            show_auto_temp, set_auto_temp, 0, 3);
1183static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1184                            show_auto_temp, set_auto_temp, 0, 4);
1185
1186static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1187                          show_pwm_enable, set_pwm_enable, 1);
1188static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1189static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1190static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1191                          show_pwm_temp_map, set_pwm_temp_map, 1);
1192static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1193                            show_auto_pwm, set_auto_pwm, 1, 0);
1194static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1195                            show_auto_pwm, set_auto_pwm, 1, 1);
1196static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1197                            show_auto_pwm, set_auto_pwm, 1, 2);
1198static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1199                            show_auto_pwm, NULL, 1, 3);
1200static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1201                            show_auto_temp, set_auto_temp, 1, 1);
1202static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1203                            show_auto_temp, set_auto_temp, 1, 0);
1204static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1205                            show_auto_temp, set_auto_temp, 1, 2);
1206static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1207                            show_auto_temp, set_auto_temp, 1, 3);
1208static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1209                            show_auto_temp, set_auto_temp, 1, 4);
1210
1211static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1212                          show_pwm_enable, set_pwm_enable, 2);
1213static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1214static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1215static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1216                          show_pwm_temp_map, set_pwm_temp_map, 2);
1217static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1218                            show_auto_pwm, set_auto_pwm, 2, 0);
1219static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1220                            show_auto_pwm, set_auto_pwm, 2, 1);
1221static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1222                            show_auto_pwm, set_auto_pwm, 2, 2);
1223static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1224                            show_auto_pwm, NULL, 2, 3);
1225static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1226                            show_auto_temp, set_auto_temp, 2, 1);
1227static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1228                            show_auto_temp, set_auto_temp, 2, 0);
1229static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1230                            show_auto_temp, set_auto_temp, 2, 2);
1231static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1232                            show_auto_temp, set_auto_temp, 2, 3);
1233static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1234                            show_auto_temp, set_auto_temp, 2, 4);
1235
1236/* Alarms */
1237static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1238                char *buf)
1239{
1240        struct it87_data *data = it87_update_device(dev);
1241        return sprintf(buf, "%u\n", data->alarms);
1242}
1243static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1244
1245static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1246                char *buf)
1247{
1248        int bitnr = to_sensor_dev_attr(attr)->index;
1249        struct it87_data *data = it87_update_device(dev);
1250        return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1251}
1252
1253static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1254                *attr, const char *buf, size_t count)
1255{
1256        struct it87_data *data = dev_get_drvdata(dev);
1257        long val;
1258        int config;
1259
1260        if (kstrtol(buf, 10, &val) < 0 || val != 0)
1261                return -EINVAL;
1262
1263        mutex_lock(&data->update_lock);
1264        config = it87_read_value(data, IT87_REG_CONFIG);
1265        if (config < 0) {
1266                count = config;
1267        } else {
1268                config |= 1 << 5;
1269                it87_write_value(data, IT87_REG_CONFIG, config);
1270                /* Invalidate cache to force re-read */
1271                data->valid = 0;
1272        }
1273        mutex_unlock(&data->update_lock);
1274
1275        return count;
1276}
1277
1278static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1279static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1280static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1281static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1282static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1283static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1284static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1285static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1286static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1287static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1288static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1289static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1290static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1291static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1292static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1293static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1294static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1295                          show_alarm, clear_intrusion, 4);
1296
1297static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1298                char *buf)
1299{
1300        int bitnr = to_sensor_dev_attr(attr)->index;
1301        struct it87_data *data = it87_update_device(dev);
1302        return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1303}
1304static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1305                const char *buf, size_t count)
1306{
1307        int bitnr = to_sensor_dev_attr(attr)->index;
1308        struct it87_data *data = dev_get_drvdata(dev);
1309        long val;
1310
1311        if (kstrtol(buf, 10, &val) < 0
1312         || (val != 0 && val != 1))
1313                return -EINVAL;
1314
1315        mutex_lock(&data->update_lock);
1316        data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1317        if (val)
1318                data->beeps |= (1 << bitnr);
1319        else
1320                data->beeps &= ~(1 << bitnr);
1321        it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1322        mutex_unlock(&data->update_lock);
1323        return count;
1324}
1325
1326static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1327                          show_beep, set_beep, 1);
1328static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1329static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1330static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1331static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1332static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1333static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1334static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1335/* fanX_beep writability is set later */
1336static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1337static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1338static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1339static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1340static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1341static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1342                          show_beep, set_beep, 2);
1343static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1344static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1345
1346static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1347                char *buf)
1348{
1349        struct it87_data *data = dev_get_drvdata(dev);
1350        return sprintf(buf, "%u\n", data->vrm);
1351}
1352static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1353                const char *buf, size_t count)
1354{
1355        struct it87_data *data = dev_get_drvdata(dev);
1356        unsigned long val;
1357
1358        if (kstrtoul(buf, 10, &val) < 0)
1359                return -EINVAL;
1360
1361        data->vrm = val;
1362
1363        return count;
1364}
1365static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1366
1367static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1368                char *buf)
1369{
1370        struct it87_data *data = it87_update_device(dev);
1371        return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1372}
1373static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1374
1375static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1376                char *buf)
1377{
1378        static const char * const labels[] = {
1379                "+5V",
1380                "5VSB",
1381                "Vbat",
1382        };
1383        static const char * const labels_it8721[] = {
1384                "+3.3V",
1385                "3VSB",
1386                "Vbat",
1387        };
1388        struct it87_data *data = dev_get_drvdata(dev);
1389        int nr = to_sensor_dev_attr(attr)->index;
1390
1391        return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1392                                                       : labels[nr]);
1393}
1394static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1395static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1396static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1397
1398static ssize_t show_name(struct device *dev, struct device_attribute
1399                         *devattr, char *buf)
1400{
1401        struct it87_data *data = dev_get_drvdata(dev);
1402        return sprintf(buf, "%s\n", data->name);
1403}
1404static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1405
1406static struct attribute *it87_attributes_in[9][5] = {
1407{
1408        &sensor_dev_attr_in0_input.dev_attr.attr,
1409        &sensor_dev_attr_in0_min.dev_attr.attr,
1410        &sensor_dev_attr_in0_max.dev_attr.attr,
1411        &sensor_dev_attr_in0_alarm.dev_attr.attr,
1412        NULL
1413}, {
1414        &sensor_dev_attr_in1_input.dev_attr.attr,
1415        &sensor_dev_attr_in1_min.dev_attr.attr,
1416        &sensor_dev_attr_in1_max.dev_attr.attr,
1417        &sensor_dev_attr_in1_alarm.dev_attr.attr,
1418        NULL
1419}, {
1420        &sensor_dev_attr_in2_input.dev_attr.attr,
1421        &sensor_dev_attr_in2_min.dev_attr.attr,
1422        &sensor_dev_attr_in2_max.dev_attr.attr,
1423        &sensor_dev_attr_in2_alarm.dev_attr.attr,
1424        NULL
1425}, {
1426        &sensor_dev_attr_in3_input.dev_attr.attr,
1427        &sensor_dev_attr_in3_min.dev_attr.attr,
1428        &sensor_dev_attr_in3_max.dev_attr.attr,
1429        &sensor_dev_attr_in3_alarm.dev_attr.attr,
1430        NULL
1431}, {
1432        &sensor_dev_attr_in4_input.dev_attr.attr,
1433        &sensor_dev_attr_in4_min.dev_attr.attr,
1434        &sensor_dev_attr_in4_max.dev_attr.attr,
1435        &sensor_dev_attr_in4_alarm.dev_attr.attr,
1436        NULL
1437}, {
1438        &sensor_dev_attr_in5_input.dev_attr.attr,
1439        &sensor_dev_attr_in5_min.dev_attr.attr,
1440        &sensor_dev_attr_in5_max.dev_attr.attr,
1441        &sensor_dev_attr_in5_alarm.dev_attr.attr,
1442        NULL
1443}, {
1444        &sensor_dev_attr_in6_input.dev_attr.attr,
1445        &sensor_dev_attr_in6_min.dev_attr.attr,
1446        &sensor_dev_attr_in6_max.dev_attr.attr,
1447        &sensor_dev_attr_in6_alarm.dev_attr.attr,
1448        NULL
1449}, {
1450        &sensor_dev_attr_in7_input.dev_attr.attr,
1451        &sensor_dev_attr_in7_min.dev_attr.attr,
1452        &sensor_dev_attr_in7_max.dev_attr.attr,
1453        &sensor_dev_attr_in7_alarm.dev_attr.attr,
1454        NULL
1455}, {
1456        &sensor_dev_attr_in8_input.dev_attr.attr,
1457        NULL
1458} };
1459
1460static const struct attribute_group it87_group_in[9] = {
1461        { .attrs = it87_attributes_in[0] },
1462        { .attrs = it87_attributes_in[1] },
1463        { .attrs = it87_attributes_in[2] },
1464        { .attrs = it87_attributes_in[3] },
1465        { .attrs = it87_attributes_in[4] },
1466        { .attrs = it87_attributes_in[5] },
1467        { .attrs = it87_attributes_in[6] },
1468        { .attrs = it87_attributes_in[7] },
1469        { .attrs = it87_attributes_in[8] },
1470};
1471
1472static struct attribute *it87_attributes_temp[3][6] = {
1473{
1474        &sensor_dev_attr_temp1_input.dev_attr.attr,
1475        &sensor_dev_attr_temp1_max.dev_attr.attr,
1476        &sensor_dev_attr_temp1_min.dev_attr.attr,
1477        &sensor_dev_attr_temp1_type.dev_attr.attr,
1478        &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1479        NULL
1480} , {
1481        &sensor_dev_attr_temp2_input.dev_attr.attr,
1482        &sensor_dev_attr_temp2_max.dev_attr.attr,
1483        &sensor_dev_attr_temp2_min.dev_attr.attr,
1484        &sensor_dev_attr_temp2_type.dev_attr.attr,
1485        &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1486        NULL
1487} , {
1488        &sensor_dev_attr_temp3_input.dev_attr.attr,
1489        &sensor_dev_attr_temp3_max.dev_attr.attr,
1490        &sensor_dev_attr_temp3_min.dev_attr.attr,
1491        &sensor_dev_attr_temp3_type.dev_attr.attr,
1492        &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1493        NULL
1494} };
1495
1496static const struct attribute_group it87_group_temp[3] = {
1497        { .attrs = it87_attributes_temp[0] },
1498        { .attrs = it87_attributes_temp[1] },
1499        { .attrs = it87_attributes_temp[2] },
1500};
1501
1502static struct attribute *it87_attributes_temp_offset[] = {
1503        &sensor_dev_attr_temp1_offset.dev_attr.attr,
1504        &sensor_dev_attr_temp2_offset.dev_attr.attr,
1505        &sensor_dev_attr_temp3_offset.dev_attr.attr,
1506};
1507
1508static struct attribute *it87_attributes[] = {
1509        &dev_attr_alarms.attr,
1510        &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1511        &dev_attr_name.attr,
1512        NULL
1513};
1514
1515static const struct attribute_group it87_group = {
1516        .attrs = it87_attributes,
1517};
1518
1519static struct attribute *it87_attributes_in_beep[] = {
1520        &sensor_dev_attr_in0_beep.dev_attr.attr,
1521        &sensor_dev_attr_in1_beep.dev_attr.attr,
1522        &sensor_dev_attr_in2_beep.dev_attr.attr,
1523        &sensor_dev_attr_in3_beep.dev_attr.attr,
1524        &sensor_dev_attr_in4_beep.dev_attr.attr,
1525        &sensor_dev_attr_in5_beep.dev_attr.attr,
1526        &sensor_dev_attr_in6_beep.dev_attr.attr,
1527        &sensor_dev_attr_in7_beep.dev_attr.attr,
1528        NULL
1529};
1530
1531static struct attribute *it87_attributes_temp_beep[] = {
1532        &sensor_dev_attr_temp1_beep.dev_attr.attr,
1533        &sensor_dev_attr_temp2_beep.dev_attr.attr,
1534        &sensor_dev_attr_temp3_beep.dev_attr.attr,
1535};
1536
1537static struct attribute *it87_attributes_fan[5][3+1] = { {
1538        &sensor_dev_attr_fan1_input.dev_attr.attr,
1539        &sensor_dev_attr_fan1_min.dev_attr.attr,
1540        &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1541        NULL
1542}, {
1543        &sensor_dev_attr_fan2_input.dev_attr.attr,
1544        &sensor_dev_attr_fan2_min.dev_attr.attr,
1545        &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1546        NULL
1547}, {
1548        &sensor_dev_attr_fan3_input.dev_attr.attr,
1549        &sensor_dev_attr_fan3_min.dev_attr.attr,
1550        &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1551        NULL
1552}, {
1553        &sensor_dev_attr_fan4_input.dev_attr.attr,
1554        &sensor_dev_attr_fan4_min.dev_attr.attr,
1555        &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1556        NULL
1557}, {
1558        &sensor_dev_attr_fan5_input.dev_attr.attr,
1559        &sensor_dev_attr_fan5_min.dev_attr.attr,
1560        &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1561        NULL
1562} };
1563
1564static const struct attribute_group it87_group_fan[5] = {
1565        { .attrs = it87_attributes_fan[0] },
1566        { .attrs = it87_attributes_fan[1] },
1567        { .attrs = it87_attributes_fan[2] },
1568        { .attrs = it87_attributes_fan[3] },
1569        { .attrs = it87_attributes_fan[4] },
1570};
1571
1572static const struct attribute *it87_attributes_fan_div[] = {
1573        &sensor_dev_attr_fan1_div.dev_attr.attr,
1574        &sensor_dev_attr_fan2_div.dev_attr.attr,
1575        &sensor_dev_attr_fan3_div.dev_attr.attr,
1576};
1577
1578static struct attribute *it87_attributes_pwm[3][4+1] = { {
1579        &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1580        &sensor_dev_attr_pwm1.dev_attr.attr,
1581        &dev_attr_pwm1_freq.attr,
1582        &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1583        NULL
1584}, {
1585        &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1586        &sensor_dev_attr_pwm2.dev_attr.attr,
1587        &dev_attr_pwm2_freq.attr,
1588        &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1589        NULL
1590}, {
1591        &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1592        &sensor_dev_attr_pwm3.dev_attr.attr,
1593        &dev_attr_pwm3_freq.attr,
1594        &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1595        NULL
1596} };
1597
1598static const struct attribute_group it87_group_pwm[3] = {
1599        { .attrs = it87_attributes_pwm[0] },
1600        { .attrs = it87_attributes_pwm[1] },
1601        { .attrs = it87_attributes_pwm[2] },
1602};
1603
1604static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1605        &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1606        &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1607        &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1608        &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1609        &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1610        &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1611        &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1612        &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1613        &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1614        NULL
1615}, {
1616        &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1617        &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1618        &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1619        &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1620        &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1621        &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1622        &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1623        &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1624        &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1625        NULL
1626}, {
1627        &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1628        &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1629        &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1630        &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1631        &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1632        &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1633        &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1634        &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1635        &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1636        NULL
1637} };
1638
1639static const struct attribute_group it87_group_autopwm[3] = {
1640        { .attrs = it87_attributes_autopwm[0] },
1641        { .attrs = it87_attributes_autopwm[1] },
1642        { .attrs = it87_attributes_autopwm[2] },
1643};
1644
1645static struct attribute *it87_attributes_fan_beep[] = {
1646        &sensor_dev_attr_fan1_beep.dev_attr.attr,
1647        &sensor_dev_attr_fan2_beep.dev_attr.attr,
1648        &sensor_dev_attr_fan3_beep.dev_attr.attr,
1649        &sensor_dev_attr_fan4_beep.dev_attr.attr,
1650        &sensor_dev_attr_fan5_beep.dev_attr.attr,
1651};
1652
1653static struct attribute *it87_attributes_vid[] = {
1654        &dev_attr_vrm.attr,
1655        &dev_attr_cpu0_vid.attr,
1656        NULL
1657};
1658
1659static const struct attribute_group it87_group_vid = {
1660        .attrs = it87_attributes_vid,
1661};
1662
1663static struct attribute *it87_attributes_label[] = {
1664        &sensor_dev_attr_in3_label.dev_attr.attr,
1665        &sensor_dev_attr_in7_label.dev_attr.attr,
1666        &sensor_dev_attr_in8_label.dev_attr.attr,
1667        NULL
1668};
1669
1670static const struct attribute_group it87_group_label = {
1671        .attrs = it87_attributes_label,
1672};
1673
1674/* SuperIO detection - will change isa_address if a chip is found */
1675static int __init it87_find(unsigned short *address,
1676        struct it87_sio_data *sio_data)
1677{
1678        int err;
1679        u16 chip_type;
1680        const char *board_vendor, *board_name;
1681
1682        err = superio_enter();
1683        if (err)
1684                return err;
1685
1686        err = -ENODEV;
1687        chip_type = force_id ? force_id : superio_inw(DEVID);
1688
1689        switch (chip_type) {
1690        case IT8705F_DEVID:
1691                sio_data->type = it87;
1692                break;
1693        case IT8712F_DEVID:
1694                sio_data->type = it8712;
1695                break;
1696        case IT8716F_DEVID:
1697        case IT8726F_DEVID:
1698                sio_data->type = it8716;
1699                break;
1700        case IT8718F_DEVID:
1701                sio_data->type = it8718;
1702                break;
1703        case IT8720F_DEVID:
1704                sio_data->type = it8720;
1705                break;
1706        case IT8721F_DEVID:
1707                sio_data->type = it8721;
1708                break;
1709        case IT8728F_DEVID:
1710                sio_data->type = it8728;
1711                break;
1712        case IT8782F_DEVID:
1713                sio_data->type = it8782;
1714                break;
1715        case IT8783E_DEVID:
1716                sio_data->type = it8783;
1717                break;
1718        case 0xffff:    /* No device at all */
1719                goto exit;
1720        default:
1721                pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1722                goto exit;
1723        }
1724
1725        superio_select(PME);
1726        if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1727                pr_info("Device not activated, skipping\n");
1728                goto exit;
1729        }
1730
1731        *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1732        if (*address == 0) {
1733                pr_info("Base address not set, skipping\n");
1734                goto exit;
1735        }
1736
1737        err = 0;
1738        sio_data->revision = superio_inb(DEVREV) & 0x0f;
1739        pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1740                chip_type, *address, sio_data->revision);
1741
1742        /* in8 (Vbat) is always internal */
1743        sio_data->internal = (1 << 2);
1744
1745        /* Read GPIO config and VID value from LDN 7 (GPIO) */
1746        if (sio_data->type == it87) {
1747                /* The IT8705F doesn't have VID pins at all */
1748                sio_data->skip_vid = 1;
1749
1750                /* The IT8705F has a different LD number for GPIO */
1751                superio_select(5);
1752                sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1753        } else if (sio_data->type == it8783) {
1754                int reg25, reg27, reg2A, reg2C, regEF;
1755
1756                sio_data->skip_vid = 1; /* No VID */
1757
1758                superio_select(GPIO);
1759
1760                reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1761                reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1762                reg2A = superio_inb(IT87_SIO_PINX1_REG);
1763                reg2C = superio_inb(IT87_SIO_PINX2_REG);
1764                regEF = superio_inb(IT87_SIO_SPI_REG);
1765
1766                /* Check if fan3 is there or not */
1767                if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
1768                        sio_data->skip_fan |= (1 << 2);
1769                if ((reg25 & (1 << 4))
1770                    || (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
1771                        sio_data->skip_pwm |= (1 << 2);
1772
1773                /* Check if fan2 is there or not */
1774                if (reg27 & (1 << 7))
1775                        sio_data->skip_fan |= (1 << 1);
1776                if (reg27 & (1 << 3))
1777                        sio_data->skip_pwm |= (1 << 1);
1778
1779                /* VIN5 */
1780                if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
1781                        sio_data->skip_in |= (1 << 5); /* No VIN5 */
1782
1783                /* VIN6 */
1784                if (reg27 & (1 << 1))
1785                        sio_data->skip_in |= (1 << 6); /* No VIN6 */
1786
1787                /*
1788                 * VIN7
1789                 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1790                 */
1791                if (reg27 & (1 << 2)) {
1792                        /*
1793                         * The data sheet is a bit unclear regarding the
1794                         * internal voltage divider for VCCH5V. It says
1795                         * "This bit enables and switches VIN7 (pin 91) to the
1796                         * internal voltage divider for VCCH5V".
1797                         * This is different to other chips, where the internal
1798                         * voltage divider would connect VIN7 to an internal
1799                         * voltage source. Maybe that is the case here as well.
1800                         *
1801                         * Since we don't know for sure, re-route it if that is
1802                         * not the case, and ask the user to report if the
1803                         * resulting voltage is sane.
1804                         */
1805                        if (!(reg2C & (1 << 1))) {
1806                                reg2C |= (1 << 1);
1807                                superio_outb(IT87_SIO_PINX2_REG, reg2C);
1808                                pr_notice("Routing internal VCCH5V to in7.\n");
1809                        }
1810                        pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1811                        pr_notice("Please report if it displays a reasonable voltage.\n");
1812                }
1813
1814                if (reg2C & (1 << 0))
1815                        sio_data->internal |= (1 << 0);
1816                if (reg2C & (1 << 1))
1817                        sio_data->internal |= (1 << 1);
1818
1819                sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1820
1821        } else {
1822                int reg;
1823                bool uart6;
1824
1825                superio_select(GPIO);
1826
1827                reg = superio_inb(IT87_SIO_GPIO3_REG);
1828                if (sio_data->type == it8721 || sio_data->type == it8728 ||
1829                    sio_data->type == it8782) {
1830                        /*
1831                         * IT8721F/IT8758E, and IT8782F don't have VID pins
1832                         * at all, not sure about the IT8728F.
1833                         */
1834                        sio_data->skip_vid = 1;
1835                } else {
1836                        /* We need at least 4 VID pins */
1837                        if (reg & 0x0f) {
1838                                pr_info("VID is disabled (pins used for GPIO)\n");
1839                                sio_data->skip_vid = 1;
1840                        }
1841                }
1842
1843                /* Check if fan3 is there or not */
1844                if (reg & (1 << 6))
1845                        sio_data->skip_pwm |= (1 << 2);
1846                if (reg & (1 << 7))
1847                        sio_data->skip_fan |= (1 << 2);
1848
1849                /* Check if fan2 is there or not */
1850                reg = superio_inb(IT87_SIO_GPIO5_REG);
1851                if (reg & (1 << 1))
1852                        sio_data->skip_pwm |= (1 << 1);
1853                if (reg & (1 << 2))
1854                        sio_data->skip_fan |= (1 << 1);
1855
1856                if ((sio_data->type == it8718 || sio_data->type == it8720)
1857                 && !(sio_data->skip_vid))
1858                        sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1859
1860                reg = superio_inb(IT87_SIO_PINX2_REG);
1861
1862                uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1863
1864                /*
1865                 * The IT8720F has no VIN7 pin, so VCCH should always be
1866                 * routed internally to VIN7 with an internal divider.
1867                 * Curiously, there still is a configuration bit to control
1868                 * this, which means it can be set incorrectly. And even
1869                 * more curiously, many boards out there are improperly
1870                 * configured, even though the IT8720F datasheet claims
1871                 * that the internal routing of VCCH to VIN7 is the default
1872                 * setting. So we force the internal routing in this case.
1873                 *
1874                 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1875                 * If UART6 is enabled, re-route VIN7 to the internal divider
1876                 * if that is not already the case.
1877                 */
1878                if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1879                        reg |= (1 << 1);
1880                        superio_outb(IT87_SIO_PINX2_REG, reg);
1881                        pr_notice("Routing internal VCCH to in7\n");
1882                }
1883                if (reg & (1 << 0))
1884                        sio_data->internal |= (1 << 0);
1885                if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1886                    sio_data->type == it8728)
1887                        sio_data->internal |= (1 << 1);
1888
1889                /*
1890                 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1891                 * While VIN7 can be routed to the internal voltage divider,
1892                 * VIN5 and VIN6 are not available if UART6 is enabled.
1893                 *
1894                 * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1895                 * is the temperature source. Since we can not read the
1896                 * temperature source here, skip_temp is preliminary.
1897                 */
1898                if (uart6) {
1899                        sio_data->skip_in |= (1 << 5) | (1 << 6);
1900                        sio_data->skip_temp |= (1 << 2);
1901                }
1902
1903                sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1904        }
1905        if (sio_data->beep_pin)
1906                pr_info("Beeping is supported\n");
1907
1908        /* Disable specific features based on DMI strings */
1909        board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1910        board_name = dmi_get_system_info(DMI_BOARD_NAME);
1911        if (board_vendor && board_name) {
1912                if (strcmp(board_vendor, "nVIDIA") == 0
1913                 && strcmp(board_name, "FN68PT") == 0) {
1914                        /*
1915                         * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1916                         * connected to a fan, but to something else. One user
1917                         * has reported instant system power-off when changing
1918                         * the PWM2 duty cycle, so we disable it.
1919                         * I use the board name string as the trigger in case
1920                         * the same board is ever used in other systems.
1921                         */
1922                        pr_info("Disabling pwm2 due to hardware constraints\n");
1923                        sio_data->skip_pwm = (1 << 1);
1924                }
1925        }
1926
1927exit:
1928        superio_exit();
1929        return err;
1930}
1931
1932static void it87_remove_files(struct device *dev)
1933{
1934        struct it87_data *data = platform_get_drvdata(pdev);
1935        struct it87_sio_data *sio_data = dev->platform_data;
1936        int i;
1937
1938        sysfs_remove_group(&dev->kobj, &it87_group);
1939        for (i = 0; i < 9; i++) {
1940                if (sio_data->skip_in & (1 << i))
1941                        continue;
1942                sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
1943                if (it87_attributes_in_beep[i])
1944                        sysfs_remove_file(&dev->kobj,
1945                                          it87_attributes_in_beep[i]);
1946        }
1947        for (i = 0; i < 3; i++) {
1948                if (!(data->has_temp & (1 << i)))
1949                        continue;
1950                sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
1951                if (has_temp_offset(data))
1952                        sysfs_remove_file(&dev->kobj,
1953                                          it87_attributes_temp_offset[i]);
1954                if (sio_data->beep_pin)
1955                        sysfs_remove_file(&dev->kobj,
1956                                          it87_attributes_temp_beep[i]);
1957        }
1958        for (i = 0; i < 5; i++) {
1959                if (!(data->has_fan & (1 << i)))
1960                        continue;
1961                sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
1962                if (sio_data->beep_pin)
1963                        sysfs_remove_file(&dev->kobj,
1964                                          it87_attributes_fan_beep[i]);
1965                if (i < 3 && !has_16bit_fans(data))
1966                        sysfs_remove_file(&dev->kobj,
1967                                          it87_attributes_fan_div[i]);
1968        }
1969        for (i = 0; i < 3; i++) {
1970                if (sio_data->skip_pwm & (1 << 0))
1971                        continue;
1972                sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
1973                if (has_old_autopwm(data))
1974                        sysfs_remove_group(&dev->kobj,
1975                                           &it87_group_autopwm[i]);
1976        }
1977        if (!sio_data->skip_vid)
1978                sysfs_remove_group(&dev->kobj, &it87_group_vid);
1979        sysfs_remove_group(&dev->kobj, &it87_group_label);
1980}
1981
1982static int it87_probe(struct platform_device *pdev)
1983{
1984        struct it87_data *data;
1985        struct resource *res;
1986        struct device *dev = &pdev->dev;
1987        struct it87_sio_data *sio_data = dev->platform_data;
1988        int err = 0, i;
1989        int enable_pwm_interface;
1990        int fan_beep_need_rw;
1991
1992        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1993        if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
1994                                 DRVNAME)) {
1995                dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1996                        (unsigned long)res->start,
1997                        (unsigned long)(res->start + IT87_EC_EXTENT - 1));
1998                return -EBUSY;
1999        }
2000
2001        data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2002        if (!data)
2003                return -ENOMEM;
2004
2005        data->addr = res->start;
2006        data->type = sio_data->type;
2007        data->features = it87_devices[sio_data->type].features;
2008        data->peci_mask = it87_devices[sio_data->type].peci_mask;
2009        data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
2010        data->name = it87_devices[sio_data->type].name;
2011        /*
2012         * IT8705F Datasheet 0.4.1, 3h == Version G.
2013         * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
2014         * These are the first revisions with 16-bit tachometer support.
2015         */
2016        switch (data->type) {
2017        case it87:
2018                if (sio_data->revision >= 0x03) {
2019                        data->features &= ~FEAT_OLD_AUTOPWM;
2020                        data->features |= FEAT_16BIT_FANS;
2021                }
2022                break;
2023        case it8712:
2024                if (sio_data->revision >= 0x08) {
2025                        data->features &= ~FEAT_OLD_AUTOPWM;
2026                        data->features |= FEAT_16BIT_FANS;
2027                }
2028                break;
2029        default:
2030                break;
2031        }
2032
2033        /* Now, we do the remaining detection. */
2034        if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2035         || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2036                return -ENODEV;
2037
2038        platform_set_drvdata(pdev, data);
2039
2040        mutex_init(&data->update_lock);
2041
2042        /* Check PWM configuration */
2043        enable_pwm_interface = it87_check_pwm(dev);
2044
2045        /* Starting with IT8721F, we handle scaling of internal voltages */
2046        if (has_12mv_adc(data)) {
2047                if (sio_data->internal & (1 << 0))
2048                        data->in_scaled |= (1 << 3);    /* in3 is AVCC */
2049                if (sio_data->internal & (1 << 1))
2050                        data->in_scaled |= (1 << 7);    /* in7 is VSB */
2051                if (sio_data->internal & (1 << 2))
2052                        data->in_scaled |= (1 << 8);    /* in8 is Vbat */
2053        } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2054                if (sio_data->internal & (1 << 0))
2055                        data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
2056                if (sio_data->internal & (1 << 1))
2057                        data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
2058        }
2059
2060        data->has_temp = 0x07;
2061        if (sio_data->skip_temp & (1 << 2)) {
2062                if (sio_data->type == it8782
2063                    && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2064                        data->has_temp &= ~(1 << 2);
2065        }
2066
2067        /* Initialize the IT87 chip */
2068        it87_init_device(pdev);
2069
2070        /* Register sysfs hooks */
2071        err = sysfs_create_group(&dev->kobj, &it87_group);
2072        if (err)
2073                return err;
2074
2075        for (i = 0; i < 9; i++) {
2076                if (sio_data->skip_in & (1 << i))
2077                        continue;
2078                err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2079                if (err)
2080                        goto error;
2081                if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2082                        err = sysfs_create_file(&dev->kobj,
2083                                                it87_attributes_in_beep[i]);
2084                        if (err)
2085                                goto error;
2086                }
2087        }
2088
2089        for (i = 0; i < 3; i++) {
2090                if (!(data->has_temp & (1 << i)))
2091                        continue;
2092                err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2093                if (err)
2094                        goto error;
2095                if (has_temp_offset(data)) {
2096                        err = sysfs_create_file(&dev->kobj,
2097                                                it87_attributes_temp_offset[i]);
2098                        if (err)
2099                                goto error;
2100                }
2101                if (sio_data->beep_pin) {
2102                        err = sysfs_create_file(&dev->kobj,
2103                                                it87_attributes_temp_beep[i]);
2104                        if (err)
2105                                goto error;
2106                }
2107        }
2108
2109        /* Do not create fan files for disabled fans */
2110        fan_beep_need_rw = 1;
2111        for (i = 0; i < 5; i++) {
2112                if (!(data->has_fan & (1 << i)))
2113                        continue;
2114                err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2115                if (err)
2116                        goto error;
2117
2118                if (i < 3 && !has_16bit_fans(data)) {
2119                        err = sysfs_create_file(&dev->kobj,
2120                                                it87_attributes_fan_div[i]);
2121                        if (err)
2122                                goto error;
2123                }
2124
2125                if (sio_data->beep_pin) {
2126                        err = sysfs_create_file(&dev->kobj,
2127                                                it87_attributes_fan_beep[i]);
2128                        if (err)
2129                                goto error;
2130                        if (!fan_beep_need_rw)
2131                                continue;
2132
2133                        /*
2134                         * As we have a single beep enable bit for all fans,
2135                         * only the first enabled fan has a writable attribute
2136                         * for it.
2137                         */
2138                        if (sysfs_chmod_file(&dev->kobj,
2139                                             it87_attributes_fan_beep[i],
2140                                             S_IRUGO | S_IWUSR))
2141                                dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2142                                        i + 1);
2143                        fan_beep_need_rw = 0;
2144                }
2145        }
2146
2147        if (enable_pwm_interface) {
2148                for (i = 0; i < 3; i++) {
2149                        if (sio_data->skip_pwm & (1 << i))
2150                                continue;
2151                        err = sysfs_create_group(&dev->kobj,
2152                                                 &it87_group_pwm[i]);
2153                        if (err)
2154                                goto error;
2155
2156                        if (!has_old_autopwm(data))
2157                                continue;
2158                        err = sysfs_create_group(&dev->kobj,
2159                                                 &it87_group_autopwm[i]);
2160                        if (err)
2161                                goto error;
2162                }
2163        }
2164
2165        if (!sio_data->skip_vid) {
2166                data->vrm = vid_which_vrm();
2167                /* VID reading from Super-I/O config space if available */
2168                data->vid = sio_data->vid_value;
2169                err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2170                if (err)
2171                        goto error;
2172        }
2173
2174        /* Export labels for internal sensors */
2175        for (i = 0; i < 3; i++) {
2176                if (!(sio_data->internal & (1 << i)))
2177                        continue;
2178                err = sysfs_create_file(&dev->kobj,
2179                                        it87_attributes_label[i]);
2180                if (err)
2181                        goto error;
2182        }
2183
2184        data->hwmon_dev = hwmon_device_register(dev);
2185        if (IS_ERR(data->hwmon_dev)) {
2186                err = PTR_ERR(data->hwmon_dev);
2187                goto error;
2188        }
2189
2190        return 0;
2191
2192error:
2193        it87_remove_files(dev);
2194        return err;
2195}
2196
2197static int it87_remove(struct platform_device *pdev)
2198{
2199        struct it87_data *data = platform_get_drvdata(pdev);
2200
2201        hwmon_device_unregister(data->hwmon_dev);
2202        it87_remove_files(&pdev->dev);
2203
2204        return 0;
2205}
2206
2207/*
2208 * Must be called with data->update_lock held, except during initialization.
2209 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2210 * would slow down the IT87 access and should not be necessary.
2211 */
2212static int it87_read_value(struct it87_data *data, u8 reg)
2213{
2214        outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2215        return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2216}
2217
2218/*
2219 * Must be called with data->update_lock held, except during initialization.
2220 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2221 * would slow down the IT87 access and should not be necessary.
2222 */
2223static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2224{
2225        outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2226        outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2227}
2228
2229/* Return 1 if and only if the PWM interface is safe to use */
2230static int it87_check_pwm(struct device *dev)
2231{
2232        struct it87_data *data = dev_get_drvdata(dev);
2233        /*
2234         * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2235         * and polarity set to active low is sign that this is the case so we
2236         * disable pwm control to protect the user.
2237         */
2238        int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2239        if ((tmp & 0x87) == 0) {
2240                if (fix_pwm_polarity) {
2241                        /*
2242                         * The user asks us to attempt a chip reconfiguration.
2243                         * This means switching to active high polarity and
2244                         * inverting all fan speed values.
2245                         */
2246                        int i;
2247                        u8 pwm[3];
2248
2249                        for (i = 0; i < 3; i++)
2250                                pwm[i] = it87_read_value(data,
2251                                                         IT87_REG_PWM(i));
2252
2253                        /*
2254                         * If any fan is in automatic pwm mode, the polarity
2255                         * might be correct, as suspicious as it seems, so we
2256                         * better don't change anything (but still disable the
2257                         * PWM interface).
2258                         */
2259                        if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2260                                dev_info(dev,
2261                                         "Reconfiguring PWM to active high polarity\n");
2262                                it87_write_value(data, IT87_REG_FAN_CTL,
2263                                                 tmp | 0x87);
2264                                for (i = 0; i < 3; i++)
2265                                        it87_write_value(data,
2266                                                         IT87_REG_PWM(i),
2267                                                         0x7f & ~pwm[i]);
2268                                return 1;
2269                        }
2270
2271                        dev_info(dev,
2272                                 "PWM configuration is too broken to be fixed\n");
2273                }
2274
2275                dev_info(dev,
2276                         "Detected broken BIOS defaults, disabling PWM interface\n");
2277                return 0;
2278        } else if (fix_pwm_polarity) {
2279                dev_info(dev,
2280                         "PWM configuration looks sane, won't touch\n");
2281        }
2282
2283        return 1;
2284}
2285
2286/* Called when we have found a new IT87. */
2287static void it87_init_device(struct platform_device *pdev)
2288{
2289        struct it87_sio_data *sio_data = pdev->dev.platform_data;
2290        struct it87_data *data = platform_get_drvdata(pdev);
2291        int tmp, i;
2292        u8 mask;
2293
2294        /*
2295         * For each PWM channel:
2296         * - If it is in automatic mode, setting to manual mode should set
2297         *   the fan to full speed by default.
2298         * - If it is in manual mode, we need a mapping to temperature
2299         *   channels to use when later setting to automatic mode later.
2300         *   Use a 1:1 mapping by default (we are clueless.)
2301         * In both cases, the value can (and should) be changed by the user
2302         * prior to switching to a different mode.
2303         * Note that this is no longer needed for the IT8721F and later, as
2304         * these have separate registers for the temperature mapping and the
2305         * manual duty cycle.
2306         */
2307        for (i = 0; i < 3; i++) {
2308                data->pwm_temp_map[i] = i;
2309                data->pwm_duty[i] = 0x7f;       /* Full speed */
2310                data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2311        }
2312
2313        /*
2314         * Some chips seem to have default value 0xff for all limit
2315         * registers. For low voltage limits it makes no sense and triggers
2316         * alarms, so change to 0 instead. For high temperature limits, it
2317         * means -1 degree C, which surprisingly doesn't trigger an alarm,
2318         * but is still confusing, so change to 127 degrees C.
2319         */
2320        for (i = 0; i < 8; i++) {
2321                tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2322                if (tmp == 0xff)
2323                        it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2324        }
2325        for (i = 0; i < 3; i++) {
2326                tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2327                if (tmp == 0xff)
2328                        it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2329        }
2330
2331        /*
2332         * Temperature channels are not forcibly enabled, as they can be
2333         * set to two different sensor types and we can't guess which one
2334         * is correct for a given system. These channels can be enabled at
2335         * run-time through the temp{1-3}_type sysfs accessors if needed.
2336         */
2337
2338        /* Check if voltage monitors are reset manually or by some reason */
2339        tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2340        if ((tmp & 0xff) == 0) {
2341                /* Enable all voltage monitors */
2342                it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2343        }
2344
2345        /* Check if tachometers are reset manually or by some reason */
2346        mask = 0x70 & ~(sio_data->skip_fan << 4);
2347        data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2348        if ((data->fan_main_ctrl & mask) == 0) {
2349                /* Enable all fan tachometers */
2350                data->fan_main_ctrl |= mask;
2351                it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2352                                 data->fan_main_ctrl);
2353        }
2354        data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2355
2356        /* Set tachometers to 16-bit mode if needed */
2357        if (has_16bit_fans(data)) {
2358                tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2359                if (~tmp & 0x07 & data->has_fan) {
2360                        dev_dbg(&pdev->dev,
2361                                "Setting fan1-3 to 16-bit mode\n");
2362                        it87_write_value(data, IT87_REG_FAN_16BIT,
2363                                         tmp | 0x07);
2364                }
2365                /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2366                if (data->type != it87 && data->type != it8782 &&
2367                    data->type != it8783) {
2368                        if (tmp & (1 << 4))
2369                                data->has_fan |= (1 << 3); /* fan4 enabled */
2370                        if (tmp & (1 << 5))
2371                                data->has_fan |= (1 << 4); /* fan5 enabled */
2372                }
2373        }
2374
2375        /* Fan input pins may be used for alternative functions */
2376        data->has_fan &= ~sio_data->skip_fan;
2377
2378        /* Start monitoring */
2379        it87_write_value(data, IT87_REG_CONFIG,
2380                         (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2381                         | (update_vbat ? 0x41 : 0x01));
2382}
2383
2384static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2385{
2386        data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2387        if (has_newer_autopwm(data)) {
2388                data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2389                data->pwm_duty[nr] = it87_read_value(data,
2390                                                     IT87_REG_PWM_DUTY(nr));
2391        } else {
2392                if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
2393                        data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2394                else                            /* Manual mode */
2395                        data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2396        }
2397
2398        if (has_old_autopwm(data)) {
2399                int i;
2400
2401                for (i = 0; i < 5 ; i++)
2402                        data->auto_temp[nr][i] = it87_read_value(data,
2403                                                IT87_REG_AUTO_TEMP(nr, i));
2404                for (i = 0; i < 3 ; i++)
2405                        data->auto_pwm[nr][i] = it87_read_value(data,
2406                                                IT87_REG_AUTO_PWM(nr, i));
2407        }
2408}
2409
2410static struct it87_data *it87_update_device(struct device *dev)
2411{
2412        struct it87_data *data = dev_get_drvdata(dev);
2413        int i;
2414
2415        mutex_lock(&data->update_lock);
2416
2417        if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2418            || !data->valid) {
2419                if (update_vbat) {
2420                        /*
2421                         * Cleared after each update, so reenable.  Value
2422                         * returned by this read will be previous value
2423                         */
2424                        it87_write_value(data, IT87_REG_CONFIG,
2425                                it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2426                }
2427                for (i = 0; i <= 7; i++) {
2428                        data->in[i][0] =
2429                                it87_read_value(data, IT87_REG_VIN(i));
2430                        data->in[i][1] =
2431                                it87_read_value(data, IT87_REG_VIN_MIN(i));
2432                        data->in[i][2] =
2433                                it87_read_value(data, IT87_REG_VIN_MAX(i));
2434                }
2435                /* in8 (battery) has no limit registers */
2436                data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2437
2438                for (i = 0; i < 5; i++) {
2439                        /* Skip disabled fans */
2440                        if (!(data->has_fan & (1 << i)))
2441                                continue;
2442
2443                        data->fan[i][1] =
2444                                it87_read_value(data, IT87_REG_FAN_MIN[i]);
2445                        data->fan[i][0] = it87_read_value(data,
2446                                       IT87_REG_FAN[i]);
2447                        /* Add high byte if in 16-bit mode */
2448                        if (has_16bit_fans(data)) {
2449                                data->fan[i][0] |= it87_read_value(data,
2450                                                IT87_REG_FANX[i]) << 8;
2451                                data->fan[i][1] |= it87_read_value(data,
2452                                                IT87_REG_FANX_MIN[i]) << 8;
2453                        }
2454                }
2455                for (i = 0; i < 3; i++) {
2456                        if (!(data->has_temp & (1 << i)))
2457                                continue;
2458                        data->temp[i][0] =
2459                                it87_read_value(data, IT87_REG_TEMP(i));
2460                        data->temp[i][1] =
2461                                it87_read_value(data, IT87_REG_TEMP_LOW(i));
2462                        data->temp[i][2] =
2463                                it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2464                        if (has_temp_offset(data))
2465                                data->temp[i][3] =
2466                                  it87_read_value(data,
2467                                                  IT87_REG_TEMP_OFFSET[i]);
2468                }
2469
2470                /* Newer chips don't have clock dividers */
2471                if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2472                        i = it87_read_value(data, IT87_REG_FAN_DIV);
2473                        data->fan_div[0] = i & 0x07;
2474                        data->fan_div[1] = (i >> 3) & 0x07;
2475                        data->fan_div[2] = (i & 0x40) ? 3 : 1;
2476                }
2477
2478                data->alarms =
2479                        it87_read_value(data, IT87_REG_ALARM1) |
2480                        (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2481                        (it87_read_value(data, IT87_REG_ALARM3) << 16);
2482                data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2483
2484                data->fan_main_ctrl = it87_read_value(data,
2485                                IT87_REG_FAN_MAIN_CTRL);
2486                data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2487                for (i = 0; i < 3; i++)
2488                        it87_update_pwm_ctrl(data, i);
2489
2490                data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2491                data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
2492                /*
2493                 * The IT8705F does not have VID capability.
2494                 * The IT8718F and later don't use IT87_REG_VID for the
2495                 * same purpose.
2496                 */
2497                if (data->type == it8712 || data->type == it8716) {
2498                        data->vid = it87_read_value(data, IT87_REG_VID);
2499                        /*
2500                         * The older IT8712F revisions had only 5 VID pins,
2501                         * but we assume it is always safe to read 6 bits.
2502                         */
2503                        data->vid &= 0x3f;
2504                }
2505                data->last_updated = jiffies;
2506                data->valid = 1;
2507        }
2508
2509        mutex_unlock(&data->update_lock);
2510
2511        return data;
2512}
2513
2514static int __init it87_device_add(unsigned short address,
2515                                  const struct it87_sio_data *sio_data)
2516{
2517        struct resource res = {
2518                .start  = address + IT87_EC_OFFSET,
2519                .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2520                .name   = DRVNAME,
2521                .flags  = IORESOURCE_IO,
2522        };
2523        int err;
2524
2525        err = acpi_check_resource_conflict(&res);
2526        if (err)
2527                goto exit;
2528
2529        pdev = platform_device_alloc(DRVNAME, address);
2530        if (!pdev) {
2531                err = -ENOMEM;
2532                pr_err("Device allocation failed\n");
2533                goto exit;
2534        }
2535
2536        err = platform_device_add_resources(pdev, &res, 1);
2537        if (err) {
2538                pr_err("Device resource addition failed (%d)\n", err);
2539                goto exit_device_put;
2540        }
2541
2542        err = platform_device_add_data(pdev, sio_data,
2543                                       sizeof(struct it87_sio_data));
2544        if (err) {
2545                pr_err("Platform data allocation failed\n");
2546                goto exit_device_put;
2547        }
2548
2549        err = platform_device_add(pdev);
2550        if (err) {
2551                pr_err("Device addition failed (%d)\n", err);
2552                goto exit_device_put;
2553        }
2554
2555        return 0;
2556
2557exit_device_put:
2558        platform_device_put(pdev);
2559exit:
2560        return err;
2561}
2562
2563static int __init sm_it87_init(void)
2564{
2565        int err;
2566        unsigned short isa_address = 0;
2567        struct it87_sio_data sio_data;
2568
2569        memset(&sio_data, 0, sizeof(struct it87_sio_data));
2570        err = it87_find(&isa_address, &sio_data);
2571        if (err)
2572                return err;
2573        err = platform_driver_register(&it87_driver);
2574        if (err)
2575                return err;
2576
2577        err = it87_device_add(isa_address, &sio_data);
2578        if (err) {
2579                platform_driver_unregister(&it87_driver);
2580                return err;
2581        }
2582
2583        return 0;
2584}
2585
2586static void __exit sm_it87_exit(void)
2587{
2588        platform_device_unregister(pdev);
2589        platform_driver_unregister(&it87_driver);
2590}
2591
2592
2593MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>");
2594MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2595module_param(update_vbat, bool, 0);
2596MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2597module_param(fix_pwm_polarity, bool, 0);
2598MODULE_PARM_DESC(fix_pwm_polarity,
2599                 "Force PWM polarity to active high (DANGEROUS)");
2600MODULE_LICENSE("GPL");
2601
2602module_init(sm_it87_init);
2603module_exit(sm_it87_exit);
2604
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