git.sur5r.net Git - groeck-it87/blob - it87.c

   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: IT8603E  Super I/O chip w/LPC interface
  14  *            IT8623E  Super I/O chip w/LPC interface
  15  *            IT8705F  Super I/O chip w/LPC interface
  16  *            IT8712F  Super I/O chip w/LPC interface
  17  *            IT8716F  Super I/O chip w/LPC interface
  18  *            IT8718F  Super I/O chip w/LPC interface
  19  *            IT8720F  Super I/O chip w/LPC interface
  20  *            IT8721F  Super I/O chip w/LPC interface
  21  *            IT8726F  Super I/O chip w/LPC interface
  22  *            IT8728F  Super I/O chip w/LPC interface
  23  *            IT8758E  Super I/O chip w/LPC interface
  24  *            IT8771E  Super I/O chip w/LPC interface
  25  *            IT8772E  Super I/O chip w/LPC interface
  26  *            IT8781F  Super I/O chip w/LPC interface
  27  *            IT8782F  Super I/O chip w/LPC interface
  28  *            IT8783E/F Super I/O chip w/LPC interface
  29  *            IT8786E  Super I/O chip w/LPC interface
  30  *            Sis950   A clone of the IT8705F
  31  *
  32  *  Copyright (C) 2001 Chris Gauthron
  33  *  Copyright (C) 2005-2010 Jean Delvare <jdelvare@suse.de>
  34  *
  35  *  This program is free software; you can redistribute it and/or modify
  36  *  it under the terms of the GNU General Public License as published by
  37  *  the Free Software Foundation; either version 2 of the License, or
  38  *  (at your option) any later version.
  39  *
  40  *  This program is distributed in the hope that it will be useful,
  41  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  42  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  43  *  GNU General Public License for more details.
  44  *
  45  *  You should have received a copy of the GNU General Public License
  46  *  along with this program; if not, write to the Free Software
  47  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  48  */
  49
  50 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  51
  52 #include <linux/module.h>
  53 #include <linux/init.h>
  54 #include <linux/slab.h>
  55 #include <linux/jiffies.h>
  56 #include <linux/platform_device.h>
  57 #include <linux/hwmon.h>
  58 #include <linux/hwmon-sysfs.h>
  59 #include <linux/hwmon-vid.h>
  60 #include <linux/err.h>
  61 #include <linux/mutex.h>
  62 #include <linux/sysfs.h>
  63 #include <linux/string.h>
  64 #include <linux/dmi.h>
  65 #include <linux/acpi.h>
  66 #include <linux/io.h>
  67 #include "compat.h"
  68
  69 #define DRVNAME "it87"
  70
  71 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771,
  72              it8772, it8781, it8782, it8783, it8786, it8603 };
  73
  74 static unsigned short force_id;
  75 module_param(force_id, ushort, 0);
  76 MODULE_PARM_DESC(force_id, "Override the detected device ID");
  77
  78 static struct platform_device *pdev;
  79
  80 #define REG     0x2e    /* The register to read/write */
  81 #define DEV     0x07    /* Register: Logical device select */
  82 #define VAL     0x2f    /* The value to read/write */
  83 #define PME     0x04    /* The device with the fan registers in it */
  84
  85 /* The device with the IT8718F/IT8720F VID value in it */
  86 #define GPIO    0x07
  87
  88 #define DEVID   0x20    /* Register: Device ID */
  89 #define DEVREV  0x22    /* Register: Device Revision */
  90
  91 static inline int superio_inb(int reg)
  92 {
  93         outb(reg, REG);
  94         return inb(VAL);
  95 }
  96
  97 static inline void superio_outb(int reg, int val)
  98 {
  99         outb(reg, REG);
 100         outb(val, VAL);
 101 }
 102
 103 static int superio_inw(int reg)
 104 {
 105         int val;
 106         outb(reg++, REG);
 107         val = inb(VAL) << 8;
 108         outb(reg, REG);
 109         val |= inb(VAL);
 110         return val;
 111 }
 112
 113 static inline void superio_select(int ldn)
 114 {
 115         outb(DEV, REG);
 116         outb(ldn, VAL);
 117 }
 118
 119 static inline int superio_enter(void)
 120 {
 121         /*
 122          * Try to reserve REG and REG + 1 for exclusive access.
 123          */
 124         if (!request_muxed_region(REG, 2, DRVNAME))
 125                 return -EBUSY;
 126
 127         outb(0x87, REG);
 128         outb(0x01, REG);
 129         outb(0x55, REG);
 130         outb(0x55, REG);
 131         return 0;
 132 }
 133
 134 static inline void superio_exit(void)
 135 {
 136         outb(0x02, REG);
 137         outb(0x02, VAL);
 138         release_region(REG, 2);
 139 }
 140
 141 /* Logical device 4 registers */
 142 #define IT8712F_DEVID 0x8712
 143 #define IT8705F_DEVID 0x8705
 144 #define IT8716F_DEVID 0x8716
 145 #define IT8718F_DEVID 0x8718
 146 #define IT8720F_DEVID 0x8720
 147 #define IT8721F_DEVID 0x8721
 148 #define IT8726F_DEVID 0x8726
 149 #define IT8728F_DEVID 0x8728
 150 #define IT8771E_DEVID 0x8771
 151 #define IT8772E_DEVID 0x8772
 152 #define IT8781F_DEVID 0x8781
 153 #define IT8782F_DEVID 0x8782
 154 #define IT8783E_DEVID 0x8783
 155 #define IT8786E_DEVID 0x8786
 156 #define IT8603E_DEVID 0x8603
 157 #define IT8623E_DEVID 0x8623
 158 #define IT87_ACT_REG  0x30
 159 #define IT87_BASE_REG 0x60
 160
 161 /* Logical device 7 registers (IT8712F and later) */
 162 #define IT87_SIO_GPIO1_REG      0x25
 163 #define IT87_SIO_GPIO3_REG      0x27
 164 #define IT87_SIO_GPIO5_REG      0x29
 165 #define IT87_SIO_PINX1_REG      0x2a    /* Pin selection */
 166 #define IT87_SIO_PINX2_REG      0x2c    /* Pin selection */
 167 #define IT87_SIO_SPI_REG        0xef    /* SPI function pin select */
 168 #define IT87_SIO_VID_REG        0xfc    /* VID value */
 169 #define IT87_SIO_BEEP_PIN_REG   0xf6    /* Beep pin mapping */
 170
 171 /* Update battery voltage after every reading if true */
 172 static bool update_vbat;
 173
 174 /* Not all BIOSes properly configure the PWM registers */
 175 static bool fix_pwm_polarity;
 176
 177 /* Many IT87 constants specified below */
 178
 179 /* Length of ISA address segment */
 180 #define IT87_EXTENT 8
 181
 182 /* Length of ISA address segment for Environmental Controller */
 183 #define IT87_EC_EXTENT 2
 184
 185 /* Offset of EC registers from ISA base address */
 186 #define IT87_EC_OFFSET 5
 187
 188 /* Where are the ISA address/data registers relative to the EC base address */
 189 #define IT87_ADDR_REG_OFFSET 0
 190 #define IT87_DATA_REG_OFFSET 1
 191
 192 /*----- The IT87 registers -----*/
 193
 194 #define IT87_REG_CONFIG        0x00
 195
 196 #define IT87_REG_ALARM1        0x01
 197 #define IT87_REG_ALARM2        0x02
 198 #define IT87_REG_ALARM3        0x03
 199
 200 /*
 201  * The IT8718F and IT8720F have the VID value in a different register, in
 202  * Super-I/O configuration space.
 203  */
 204 #define IT87_REG_VID           0x0a
 205 /*
 206  * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
 207  * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
 208  * mode.
 209  */
 210 #define IT87_REG_FAN_DIV       0x0b
 211 #define IT87_REG_FAN_16BIT     0x0c
 212
 213 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
 214
 215 static const u8 IT87_REG_FAN[]          = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
 216 static const u8 IT87_REG_FAN_MIN[]      = { 0x10, 0x11, 0x12, 0x84, 0x86 };
 217 static const u8 IT87_REG_FANX[]         = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
 218 static const u8 IT87_REG_FANX_MIN[]     = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
 219 static const u8 IT87_REG_TEMP_OFFSET[]  = { 0x56, 0x57, 0x59 };
 220
 221 #define IT87_REG_FAN_MAIN_CTRL 0x13
 222 #define IT87_REG_FAN_CTL       0x14
 223 #define IT87_REG_PWM(nr)       (0x15 + (nr))
 224 #define IT87_REG_PWM_DUTY(nr)  (0x63 + (nr) * 8)
 225
 226 #define IT87_REG_VIN(nr)       (0x20 + (nr))
 227 #define IT87_REG_TEMP(nr)      (0x29 + (nr))
 228
 229 #define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 230 #define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 231 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
 232 #define IT87_REG_TEMP_LOW(nr)  (0x41 + (nr) * 2)
 233
 234 #define IT87_REG_VIN_ENABLE    0x50
 235 #define IT87_REG_TEMP_ENABLE   0x51
 236 #define IT87_REG_TEMP_EXTRA    0x55
 237 #define IT87_REG_BEEP_ENABLE   0x5c
 238
 239 #define IT87_REG_CHIPID        0x58
 240
 241 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
 242 #define IT87_REG_AUTO_PWM(nr, i)  (0x65 + (nr) * 8 + (i))
 243
 244 struct it87_devices {
 245         const char *name;
 246         u16 features;
 247         u8 peci_mask;
 248         u8 old_peci_mask;
 249 };
 250
 251 #define FEAT_12MV_ADC           (1 << 0)
 252 #define FEAT_NEWER_AUTOPWM      (1 << 1)
 253 #define FEAT_OLD_AUTOPWM        (1 << 2)
 254 #define FEAT_16BIT_FANS         (1 << 3)
 255 #define FEAT_TEMP_OFFSET        (1 << 4)
 256 #define FEAT_TEMP_PECI          (1 << 5)
 257 #define FEAT_TEMP_OLD_PECI      (1 << 6)
 258 #define FEAT_FAN16_CONFIG       (1 << 7)        /* Need to enable 16-bit fans */
 259 #define FEAT_FIVE_FANS          (1 << 8)        /* Supports five fans */
 260 #define FEAT_VID                (1 << 9)        /* Set if chip supports VID */
 261
 262 static const struct it87_devices it87_devices[] = {
 263         [it87] = {
 264                 .name = "it87",
 265                 .features = FEAT_OLD_AUTOPWM | FEAT_FAN16_CONFIG,
 266                                                 /* may need to overwrite */
 267         },
 268         [it8712] = {
 269                 .name = "it8712",
 270                 .features = FEAT_OLD_AUTOPWM | FEAT_FAN16_CONFIG | FEAT_VID,
 271                                                 /* may need to overwrite */
 272         },
 273         [it8716] = {
 274                 .name = "it8716",
 275                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 276                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS,
 277         },
 278         [it8718] = {
 279                 .name = "it8718",
 280                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 281                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS,
 282                 .old_peci_mask = 0x4,
 283         },
 284         [it8720] = {
 285                 .name = "it8720",
 286                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 287                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS,
 288                 .old_peci_mask = 0x4,
 289         },
 290         [it8721] = {
 291                 .name = "it8721",
 292                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 293                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 294                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS,
 295                 .peci_mask = 0x05,
 296                 .old_peci_mask = 0x02,  /* Actually reports PCH */
 297         },
 298         [it8728] = {
 299                 .name = "it8728",
 300                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 301                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS,
 302                 .peci_mask = 0x07,
 303         },
 304         [it8771] = {
 305                 .name = "it8771",
 306                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 307                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 308                                 /* PECI: guesswork */
 309                                 /* 12mV ADC (OHM) */
 310                                 /* 16 bit fans (OHM) */
 311                                 /* three fans, always 16 bit (guesswork) */
 312                 .peci_mask = 0x07,
 313         },
 314         [it8772] = {
 315                 .name = "it8772",
 316                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 317                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 318                                 /* PECI (coreboot) */
 319                                 /* 12mV ADC (HWSensors4, OHM) */
 320                                 /* 16 bit fans (HWSensors4, OHM) */
 321                                 /* three fans, always 16 bit (datasheet) */
 322                 .peci_mask = 0x07,
 323         },
 324         [it8781] = {
 325                 .name = "it8781",
 326                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 327                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG,
 328                 .old_peci_mask = 0x4,
 329         },
 330         [it8782] = {
 331                 .name = "it8782",
 332                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 333                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG,
 334                 .old_peci_mask = 0x4,
 335         },
 336         [it8783] = {
 337                 .name = "it8783",
 338                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 339                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG,
 340                 .old_peci_mask = 0x4,
 341         },
 342    [it8786] = {
 343                 .name = "it8786",
 344                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 345                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 346                 .peci_mask = 0x07,
 347         },
 348         [it8603] = {
 349                 .name = "it8603",
 350                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 351                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 352                 .peci_mask = 0x07,
 353         },
 354 };
 355
 356 #define has_16bit_fans(data)    ((data)->features & FEAT_16BIT_FANS)
 357 #define has_12mv_adc(data)      ((data)->features & FEAT_12MV_ADC)
 358 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
 359 #define has_old_autopwm(data)   ((data)->features & FEAT_OLD_AUTOPWM)
 360 #define has_temp_offset(data)   ((data)->features & FEAT_TEMP_OFFSET)
 361 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
 362                                  ((data)->peci_mask & (1 << nr)))
 363 #define has_temp_old_peci(data, nr) \
 364                                 (((data)->features & FEAT_TEMP_OLD_PECI) && \
 365                                  ((data)->old_peci_mask & (1 << nr)))
 366 #define has_fan16_config(data)  (has_16bit_fans(data) && \
 367                                  ((data)->features & FEAT_FAN16_CONFIG))
 368 #define has_five_fans(data)     ((data)->features & FEAT_FIVE_FANS)
 369 #define has_vid(data)           ((data)->features & FEAT_VID)
 370
 371 struct it87_sio_data {
 372         enum chips type;
 373         /* Values read from Super-I/O config space */
 374         u8 revision;
 375         u8 vid_value;
 376         u8 beep_pin;
 377         u8 internal;    /* Internal sensors can be labeled */
 378         /* Features skipped based on config or DMI */
 379         u16 skip_in;
 380         u8 skip_vid;
 381         u8 skip_fan;
 382         u8 skip_pwm;
 383         u8 skip_temp;
 384 };
 385
 386 /*
 387  * For each registered chip, we need to keep some data in memory.
 388  * The structure is dynamically allocated.
 389  */
 390 struct it87_data {
 391         struct device *hwmon_dev;
 392         enum chips type;
 393         u16 features;
 394         u8 peci_mask;
 395         u8 old_peci_mask;
 396
 397         unsigned short addr;
 398         const char *name;
 399         struct mutex update_lock;
 400         char valid;             /* !=0 if following fields are valid */
 401         unsigned long last_updated;     /* In jiffies */
 402
 403         u16 in_scaled;          /* Internal voltage sensors are scaled */
 404         u8 in[10][3];           /* [nr][0]=in, [1]=min, [2]=max */
 405         u8 has_fan;             /* Bitfield, fans enabled */
 406         u16 fan[5][2];          /* Register values, [nr][0]=fan, [1]=min */
 407         u8 has_temp;            /* Bitfield, temp sensors enabled */
 408         s8 temp[3][4];          /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 409         u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
 410         u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
 411         u8 fan_div[3];          /* Register encoding, shifted right */
 412         u8 vid;                 /* Register encoding, combined */
 413         u8 vrm;
 414         u32 alarms;             /* Register encoding, combined */
 415         u8 beeps;               /* Register encoding */
 416         u8 fan_main_ctrl;       /* Register value */
 417         u8 fan_ctl;             /* Register value */
 418
 419         /*
 420          * The following 3 arrays correspond to the same registers up to
 421          * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 422          * 7, and we want to preserve settings on mode changes, so we have
 423          * to track all values separately.
 424          * Starting with the IT8721F, the manual PWM duty cycles are stored
 425          * in separate registers (8-bit values), so the separate tracking
 426          * is no longer needed, but it is still done to keep the driver
 427          * simple.
 428          */
 429         u8 pwm_ctrl[3];         /* Register value */
 430         u8 pwm_duty[3];         /* Manual PWM value set by user */
 431         u8 pwm_temp_map[3];     /* PWM to temp. chan. mapping (bits 1-0) */
 432
 433         /* Automatic fan speed control registers */
 434         u8 auto_pwm[3][4];      /* [nr][3] is hard-coded */
 435         s8 auto_temp[3][5];     /* [nr][0] is point1_temp_hyst */
 436 };
 437
 438 static int adc_lsb(const struct it87_data *data, int nr)
 439 {
 440         int lsb = has_12mv_adc(data) ? 12 : 16;
 441         if (data->in_scaled & (1 << nr))
 442                 lsb <<= 1;
 443         return lsb;
 444 }
 445
 446 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 447 {
 448         val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
 449         return clamp_val(val, 0, 255);
 450 }
 451
 452 static int in_from_reg(const struct it87_data *data, int nr, int val)
 453 {
 454         return val * adc_lsb(data, nr);
 455 }
 456
 457 static inline u8 FAN_TO_REG(long rpm, int div)
 458 {
 459         if (rpm == 0)
 460                 return 255;
 461         rpm = clamp_val(rpm, 1, 1000000);
 462         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 463 }
 464
 465 static inline u16 FAN16_TO_REG(long rpm)
 466 {
 467         if (rpm == 0)
 468                 return 0xffff;
 469         return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 470 }
 471
 472 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 473                                 1350000 / ((val) * (div)))
 474 /* The divider is fixed to 2 in 16-bit mode */
 475 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 476                              1350000 / ((val) * 2))
 477
 478 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
 479                                     ((val) + 500) / 1000), -128, 127))
 480 #define TEMP_FROM_REG(val) ((val) * 1000)
 481
 482 static u8 pwm_to_reg(const struct it87_data *data, long val)
 483 {
 484         if (has_newer_autopwm(data))
 485                 return val;
 486         else
 487                 return val >> 1;
 488 }
 489
 490 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 491 {
 492         if (has_newer_autopwm(data))
 493                 return reg;
 494         else
 495                 return (reg & 0x7f) << 1;
 496 }
 497
 498
 499 static int DIV_TO_REG(int val)
 500 {
 501         int answer = 0;
 502         while (answer < 7 && (val >>= 1))
 503                 answer++;
 504         return answer;
 505 }
 506 #define DIV_FROM_REG(val) (1 << (val))
 507
 508 static const unsigned int pwm_freq[8] = {
 509         48000000 / 128,
 510         24000000 / 128,
 511         12000000 / 128,
 512         8000000 / 128,
 513         6000000 / 128,
 514         3000000 / 128,
 515         1500000 / 128,
 516         750000 / 128,
 517 };
 518
 519 static int it87_probe(struct platform_device *pdev);
 520 static int it87_remove(struct platform_device *pdev);
 521
 522 static int it87_read_value(struct it87_data *data, u8 reg);
 523 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
 524 static struct it87_data *it87_update_device(struct device *dev);
 525 static int it87_check_pwm(struct device *dev);
 526 static void it87_init_device(struct platform_device *pdev);
 527
 528
 529 static struct platform_driver it87_driver = {
 530         .driver = {
 531                 .name   = DRVNAME,
 532         },
 533         .probe  = it87_probe,
 534         .remove = it87_remove,
 535 };
 536
 537 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 538                        char *buf)
 539 {
 540         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 541         int nr = sattr->nr;
 542         int index = sattr->index;
 543
 544         struct it87_data *data = it87_update_device(dev);
 545         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 546 }
 547
 548 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
 549                       const char *buf, size_t count)
 550 {
 551         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 552         int nr = sattr->nr;
 553         int index = sattr->index;
 554
 555         struct it87_data *data = dev_get_drvdata(dev);
 556         unsigned long val;
 557
 558         if (kstrtoul(buf, 10, &val) < 0)
 559                 return -EINVAL;
 560
 561         mutex_lock(&data->update_lock);
 562         data->in[nr][index] = in_to_reg(data, nr, val);
 563         it87_write_value(data,
 564                          index == 1 ? IT87_REG_VIN_MIN(nr)
 565                                     : IT87_REG_VIN_MAX(nr),
 566                          data->in[nr][index]);
 567         mutex_unlock(&data->update_lock);
 568         return count;
 569 }
 570
 571 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 572 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 573                             0, 1);
 574 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 575                             0, 2);
 576
 577 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 578 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 579                             1, 1);
 580 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 581                             1, 2);
 582
 583 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 584 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 585                             2, 1);
 586 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 587                             2, 2);
 588
 589 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 590 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 591                             3, 1);
 592 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 593                             3, 2);
 594
 595 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 596 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 597                             4, 1);
 598 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 599                             4, 2);
 600
 601 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 602 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 603                             5, 1);
 604 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 605                             5, 2);
 606
 607 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 608 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 609                             6, 1);
 610 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 611                             6, 2);
 612
 613 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 614 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 615                             7, 1);
 616 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 617                             7, 2);
 618
 619 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 620 static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
 621
 622 /* 3 temperatures */
 623 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 624                          char *buf)
 625 {
 626         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 627         int nr = sattr->nr;
 628         int index = sattr->index;
 629         struct it87_data *data = it87_update_device(dev);
 630
 631         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 632 }
 633
 634 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 635                         const char *buf, size_t count)
 636 {
 637         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 638         int nr = sattr->nr;
 639         int index = sattr->index;
 640         struct it87_data *data = dev_get_drvdata(dev);
 641         long val;
 642         u8 reg, regval;
 643
 644         if (kstrtol(buf, 10, &val) < 0)
 645                 return -EINVAL;
 646
 647         mutex_lock(&data->update_lock);
 648
 649         switch (index) {
 650         default:
 651         case 1:
 652                 reg = IT87_REG_TEMP_LOW(nr);
 653                 break;
 654         case 2:
 655                 reg = IT87_REG_TEMP_HIGH(nr);
 656                 break;
 657         case 3:
 658                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 659                 if (!(regval & 0x80)) {
 660                         regval |= 0x80;
 661                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 662                 }
 663                 data->valid = 0;
 664                 reg = IT87_REG_TEMP_OFFSET[nr];
 665                 break;
 666         }
 667
 668         data->temp[nr][index] = TEMP_TO_REG(val);
 669         it87_write_value(data, reg, data->temp[nr][index]);
 670         mutex_unlock(&data->update_lock);
 671         return count;
 672 }
 673
 674 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
 675 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 676                             0, 1);
 677 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 678                             0, 2);
 679 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
 680                             set_temp, 0, 3);
 681 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
 682 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 683                             1, 1);
 684 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 685                             1, 2);
 686 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
 687                             set_temp, 1, 3);
 688 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
 689 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 690                             2, 1);
 691 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 692                             2, 2);
 693 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
 694                             set_temp, 2, 3);
 695
 696 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
 697                               char *buf)
 698 {
 699         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 700         int nr = sensor_attr->index;
 701         struct it87_data *data = it87_update_device(dev);
 702         u8 reg = data->sensor;      /* In case value is updated while used */
 703         u8 extra = data->extra;
 704
 705         if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
 706             || (has_temp_old_peci(data, nr) && (extra & 0x80)))
 707                 return sprintf(buf, "6\n");  /* Intel PECI */
 708         if (reg & (1 << nr))
 709                 return sprintf(buf, "3\n");  /* thermal diode */
 710         if (reg & (8 << nr))
 711                 return sprintf(buf, "4\n");  /* thermistor */
 712         return sprintf(buf, "0\n");      /* disabled */
 713 }
 714
 715 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
 716                              const char *buf, size_t count)
 717 {
 718         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 719         int nr = sensor_attr->index;
 720
 721         struct it87_data *data = dev_get_drvdata(dev);
 722         long val;
 723         u8 reg, extra;
 724
 725         if (kstrtol(buf, 10, &val) < 0)
 726                 return -EINVAL;
 727
 728         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 729         reg &= ~(1 << nr);
 730         reg &= ~(8 << nr);
 731         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
 732                 reg &= 0x3f;
 733         extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
 734         if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
 735                 extra &= 0x7f;
 736         if (val == 2) { /* backwards compatibility */
 737                 dev_warn(dev,
 738                          "Sensor type 2 is deprecated, please use 4 instead\n");
 739                 val = 4;
 740         }
 741         /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
 742         if (val == 3)
 743                 reg |= 1 << nr;
 744         else if (val == 4)
 745                 reg |= 8 << nr;
 746         else if (has_temp_peci(data, nr) && val == 6)
 747                 reg |= (nr + 1) << 6;
 748         else if (has_temp_old_peci(data, nr) && val == 6)
 749                 extra |= 0x80;
 750         else if (val != 0)
 751                 return -EINVAL;
 752
 753         mutex_lock(&data->update_lock);
 754         data->sensor = reg;
 755         data->extra = extra;
 756         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
 757         if (has_temp_old_peci(data, nr))
 758                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
 759         data->valid = 0;        /* Force cache refresh */
 760         mutex_unlock(&data->update_lock);
 761         return count;
 762 }
 763
 764 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
 765                           set_temp_type, 0);
 766 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
 767                           set_temp_type, 1);
 768 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
 769                           set_temp_type, 2);
 770
 771 /* 3 Fans */
 772
 773 static int pwm_mode(const struct it87_data *data, int nr)
 774 {
 775         int ctrl = data->fan_main_ctrl & (1 << nr);
 776
 777         if (ctrl == 0 && data->type != it8603)          /* Full speed */
 778                 return 0;
 779         if (data->pwm_ctrl[nr] & 0x80)                  /* Automatic mode */
 780                 return 2;
 781         else                                            /* Manual mode */
 782                 return 1;
 783 }
 784
 785 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 786                         char *buf)
 787 {
 788         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 789         int nr = sattr->nr;
 790         int index = sattr->index;
 791         int speed;
 792         struct it87_data *data = it87_update_device(dev);
 793
 794         speed = has_16bit_fans(data) ?
 795                 FAN16_FROM_REG(data->fan[nr][index]) :
 796                 FAN_FROM_REG(data->fan[nr][index],
 797                              DIV_FROM_REG(data->fan_div[nr]));
 798         return sprintf(buf, "%d\n", speed);
 799 }
 800
 801 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 802                 char *buf)
 803 {
 804         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 805         int nr = sensor_attr->index;
 806
 807         struct it87_data *data = it87_update_device(dev);
 808         return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
 809 }
 810 static ssize_t show_pwm_enable(struct device *dev,
 811                 struct device_attribute *attr, char *buf)
 812 {
 813         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 814         int nr = sensor_attr->index;
 815
 816         struct it87_data *data = it87_update_device(dev);
 817         return sprintf(buf, "%d\n", pwm_mode(data, nr));
 818 }
 819 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 820                 char *buf)
 821 {
 822         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 823         int nr = sensor_attr->index;
 824
 825         struct it87_data *data = it87_update_device(dev);
 826         return sprintf(buf, "%d\n",
 827                        pwm_from_reg(data, data->pwm_duty[nr]));
 828 }
 829 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
 830                 char *buf)
 831 {
 832         struct it87_data *data = it87_update_device(dev);
 833         int index = (data->fan_ctl >> 4) & 0x07;
 834
 835         return sprintf(buf, "%u\n", pwm_freq[index]);
 836 }
 837
 838 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 839                        const char *buf, size_t count)
 840 {
 841         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 842         int nr = sattr->nr;
 843         int index = sattr->index;
 844
 845         struct it87_data *data = dev_get_drvdata(dev);
 846         long val;
 847         u8 reg;
 848
 849         if (kstrtol(buf, 10, &val) < 0)
 850                 return -EINVAL;
 851
 852         mutex_lock(&data->update_lock);
 853
 854         if (has_16bit_fans(data)) {
 855                 data->fan[nr][index] = FAN16_TO_REG(val);
 856                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 857                                  data->fan[nr][index] & 0xff);
 858                 it87_write_value(data, IT87_REG_FANX_MIN[nr],
 859                                  data->fan[nr][index] >> 8);
 860         } else {
 861                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
 862                 switch (nr) {
 863                 case 0:
 864                         data->fan_div[nr] = reg & 0x07;
 865                         break;
 866                 case 1:
 867                         data->fan_div[nr] = (reg >> 3) & 0x07;
 868                         break;
 869                 case 2:
 870                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
 871                         break;
 872                 }
 873                 data->fan[nr][index] =
 874                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 875                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 876                                  data->fan[nr][index]);
 877         }
 878
 879         mutex_unlock(&data->update_lock);
 880         return count;
 881 }
 882
 883 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 884                 const char *buf, size_t count)
 885 {
 886         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 887         int nr = sensor_attr->index;
 888
 889         struct it87_data *data = dev_get_drvdata(dev);
 890         unsigned long val;
 891         int min;
 892         u8 old;
 893
 894         if (kstrtoul(buf, 10, &val) < 0)
 895                 return -EINVAL;
 896
 897         mutex_lock(&data->update_lock);
 898         old = it87_read_value(data, IT87_REG_FAN_DIV);
 899
 900         /* Save fan min limit */
 901         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
 902
 903         switch (nr) {
 904         case 0:
 905         case 1:
 906                 data->fan_div[nr] = DIV_TO_REG(val);
 907                 break;
 908         case 2:
 909                 if (val < 8)
 910                         data->fan_div[nr] = 1;
 911                 else
 912                         data->fan_div[nr] = 3;
 913         }
 914         val = old & 0x80;
 915         val |= (data->fan_div[0] & 0x07);
 916         val |= (data->fan_div[1] & 0x07) << 3;
 917         if (data->fan_div[2] == 3)
 918                 val |= 0x1 << 6;
 919         it87_write_value(data, IT87_REG_FAN_DIV, val);
 920
 921         /* Restore fan min limit */
 922         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 923         it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
 924
 925         mutex_unlock(&data->update_lock);
 926         return count;
 927 }
 928
 929 /* Returns 0 if OK, -EINVAL otherwise */
 930 static int check_trip_points(struct device *dev, int nr)
 931 {
 932         const struct it87_data *data = dev_get_drvdata(dev);
 933         int i, err = 0;
 934
 935         if (has_old_autopwm(data)) {
 936                 for (i = 0; i < 3; i++) {
 937                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
 938                                 err = -EINVAL;
 939                 }
 940                 for (i = 0; i < 2; i++) {
 941                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
 942                                 err = -EINVAL;
 943                 }
 944         }
 945
 946         if (err) {
 947                 dev_err(dev,
 948                         "Inconsistent trip points, not switching to automatic mode\n");
 949                 dev_err(dev, "Adjust the trip points and try again\n");
 950         }
 951         return err;
 952 }
 953
 954 static ssize_t set_pwm_enable(struct device *dev,
 955                 struct device_attribute *attr, const char *buf, size_t count)
 956 {
 957         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 958         int nr = sensor_attr->index;
 959
 960         struct it87_data *data = dev_get_drvdata(dev);
 961         long val;
 962
 963         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
 964                 return -EINVAL;
 965
 966         /* Check trip points before switching to automatic mode */
 967         if (val == 2) {
 968                 if (check_trip_points(dev, nr) < 0)
 969                         return -EINVAL;
 970         }
 971
 972         /* IT8603E does not have on/off mode */
 973         if (val == 0 && data->type == it8603)
 974                 return -EINVAL;
 975
 976         mutex_lock(&data->update_lock);
 977
 978         if (val == 0) {
 979                 int tmp;
 980                 /* make sure the fan is on when in on/off mode */
 981                 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
 982                 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
 983                 /* set on/off mode */
 984                 data->fan_main_ctrl &= ~(1 << nr);
 985                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 986                                  data->fan_main_ctrl);
 987         } else {
 988                 if (val == 1)                           /* Manual mode */
 989                         data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
 990                                              data->pwm_temp_map[nr] :
 991                                              data->pwm_duty[nr];
 992                 else                                    /* Automatic mode */
 993                         data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
 994                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
 995
 996                 if (data->type != it8603) {
 997                         /* set SmartGuardian mode */
 998                         data->fan_main_ctrl |= (1 << nr);
 999                         it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1000                                          data->fan_main_ctrl);
1001                 }
1002         }
1003
1004         mutex_unlock(&data->update_lock);
1005         return count;
1006 }
1007 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1008                 const char *buf, size_t count)
1009 {
1010         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1011         int nr = sensor_attr->index;
1012
1013         struct it87_data *data = dev_get_drvdata(dev);
1014         long val;
1015
1016         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1017                 return -EINVAL;
1018
1019         mutex_lock(&data->update_lock);
1020         if (has_newer_autopwm(data)) {
1021                 /*
1022                  * If we are in automatic mode, the PWM duty cycle register
1023                  * is read-only so we can't write the value.
1024                  */
1025                 if (data->pwm_ctrl[nr] & 0x80) {
1026                         mutex_unlock(&data->update_lock);
1027                         return -EBUSY;
1028                 }
1029                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1030                 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
1031                                  data->pwm_duty[nr]);
1032         } else {
1033                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1034                 /*
1035                  * If we are in manual mode, write the duty cycle immediately;
1036                  * otherwise, just store it for later use.
1037                  */
1038                 if (!(data->pwm_ctrl[nr] & 0x80)) {
1039                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
1040                         it87_write_value(data, IT87_REG_PWM(nr),
1041                                          data->pwm_ctrl[nr]);
1042                 }
1043         }
1044         mutex_unlock(&data->update_lock);
1045         return count;
1046 }
1047 static ssize_t set_pwm_freq(struct device *dev,
1048                 struct device_attribute *attr, const char *buf, size_t count)
1049 {
1050         struct it87_data *data = dev_get_drvdata(dev);
1051         unsigned long val;
1052         int i;
1053
1054         if (kstrtoul(buf, 10, &val) < 0)
1055                 return -EINVAL;
1056
1057         /* Search for the nearest available frequency */
1058         for (i = 0; i < 7; i++) {
1059                 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
1060                         break;
1061         }
1062
1063         mutex_lock(&data->update_lock);
1064         data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1065         data->fan_ctl |= i << 4;
1066         it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1067         mutex_unlock(&data->update_lock);
1068
1069         return count;
1070 }
1071 static ssize_t show_pwm_temp_map(struct device *dev,
1072                 struct device_attribute *attr, char *buf)
1073 {
1074         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1075         int nr = sensor_attr->index;
1076
1077         struct it87_data *data = it87_update_device(dev);
1078         int map;
1079
1080         if (data->pwm_temp_map[nr] < 3)
1081                 map = 1 << data->pwm_temp_map[nr];
1082         else
1083                 map = 0;                        /* Should never happen */
1084         return sprintf(buf, "%d\n", map);
1085 }
1086 static ssize_t set_pwm_temp_map(struct device *dev,
1087                 struct device_attribute *attr, const char *buf, size_t count)
1088 {
1089         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1090         int nr = sensor_attr->index;
1091
1092         struct it87_data *data = dev_get_drvdata(dev);
1093         long val;
1094         u8 reg;
1095
1096         /*
1097          * This check can go away if we ever support automatic fan speed
1098          * control on newer chips.
1099          */
1100         if (!has_old_autopwm(data)) {
1101                 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1102                 return -EINVAL;
1103         }
1104
1105         if (kstrtol(buf, 10, &val) < 0)
1106                 return -EINVAL;
1107
1108         switch (val) {
1109         case (1 << 0):
1110                 reg = 0x00;
1111                 break;
1112         case (1 << 1):
1113                 reg = 0x01;
1114                 break;
1115         case (1 << 2):
1116                 reg = 0x02;
1117                 break;
1118         default:
1119                 return -EINVAL;
1120         }
1121
1122         mutex_lock(&data->update_lock);
1123         data->pwm_temp_map[nr] = reg;
1124         /*
1125          * If we are in automatic mode, write the temp mapping immediately;
1126          * otherwise, just store it for later use.
1127          */
1128         if (data->pwm_ctrl[nr] & 0x80) {
1129                 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1130                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1131         }
1132         mutex_unlock(&data->update_lock);
1133         return count;
1134 }
1135
1136 static ssize_t show_auto_pwm(struct device *dev,
1137                 struct device_attribute *attr, char *buf)
1138 {
1139         struct it87_data *data = it87_update_device(dev);
1140         struct sensor_device_attribute_2 *sensor_attr =
1141                         to_sensor_dev_attr_2(attr);
1142         int nr = sensor_attr->nr;
1143         int point = sensor_attr->index;
1144
1145         return sprintf(buf, "%d\n",
1146                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1147 }
1148
1149 static ssize_t set_auto_pwm(struct device *dev,
1150                 struct device_attribute *attr, const char *buf, size_t count)
1151 {
1152         struct it87_data *data = dev_get_drvdata(dev);
1153         struct sensor_device_attribute_2 *sensor_attr =
1154                         to_sensor_dev_attr_2(attr);
1155         int nr = sensor_attr->nr;
1156         int point = sensor_attr->index;
1157         long val;
1158
1159         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1160                 return -EINVAL;
1161
1162         mutex_lock(&data->update_lock);
1163         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1164         it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1165                          data->auto_pwm[nr][point]);
1166         mutex_unlock(&data->update_lock);
1167         return count;
1168 }
1169
1170 static ssize_t show_auto_temp(struct device *dev,
1171                 struct device_attribute *attr, char *buf)
1172 {
1173         struct it87_data *data = it87_update_device(dev);
1174         struct sensor_device_attribute_2 *sensor_attr =
1175                         to_sensor_dev_attr_2(attr);
1176         int nr = sensor_attr->nr;
1177         int point = sensor_attr->index;
1178
1179         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1180 }
1181
1182 static ssize_t set_auto_temp(struct device *dev,
1183                 struct device_attribute *attr, const char *buf, size_t count)
1184 {
1185         struct it87_data *data = dev_get_drvdata(dev);
1186         struct sensor_device_attribute_2 *sensor_attr =
1187                         to_sensor_dev_attr_2(attr);
1188         int nr = sensor_attr->nr;
1189         int point = sensor_attr->index;
1190         long val;
1191
1192         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1193                 return -EINVAL;
1194
1195         mutex_lock(&data->update_lock);
1196         data->auto_temp[nr][point] = TEMP_TO_REG(val);
1197         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1198                          data->auto_temp[nr][point]);
1199         mutex_unlock(&data->update_lock);
1200         return count;
1201 }
1202
1203 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1204 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1205                             0, 1);
1206 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1207                           set_fan_div, 0);
1208
1209 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1210 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1211                             1, 1);
1212 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1213                           set_fan_div, 1);
1214
1215 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1216 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1217                             2, 1);
1218 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1219                           set_fan_div, 2);
1220
1221 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1222 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1223                             3, 1);
1224
1225 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1226 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1227                             4, 1);
1228
1229 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1230                           show_pwm_enable, set_pwm_enable, 0);
1231 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1232 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1233 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1234                           show_pwm_temp_map, set_pwm_temp_map, 0);
1235 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1236                             show_auto_pwm, set_auto_pwm, 0, 0);
1237 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1238                             show_auto_pwm, set_auto_pwm, 0, 1);
1239 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1240                             show_auto_pwm, set_auto_pwm, 0, 2);
1241 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1242                             show_auto_pwm, NULL, 0, 3);
1243 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1244                             show_auto_temp, set_auto_temp, 0, 1);
1245 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1246                             show_auto_temp, set_auto_temp, 0, 0);
1247 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1248                             show_auto_temp, set_auto_temp, 0, 2);
1249 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1250                             show_auto_temp, set_auto_temp, 0, 3);
1251 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1252                             show_auto_temp, set_auto_temp, 0, 4);
1253
1254 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1255                           show_pwm_enable, set_pwm_enable, 1);
1256 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1257 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1258 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1259                           show_pwm_temp_map, set_pwm_temp_map, 1);
1260 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1261                             show_auto_pwm, set_auto_pwm, 1, 0);
1262 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1263                             show_auto_pwm, set_auto_pwm, 1, 1);
1264 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1265                             show_auto_pwm, set_auto_pwm, 1, 2);
1266 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1267                             show_auto_pwm, NULL, 1, 3);
1268 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1269                             show_auto_temp, set_auto_temp, 1, 1);
1270 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1271                             show_auto_temp, set_auto_temp, 1, 0);
1272 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1273                             show_auto_temp, set_auto_temp, 1, 2);
1274 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1275                             show_auto_temp, set_auto_temp, 1, 3);
1276 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1277                             show_auto_temp, set_auto_temp, 1, 4);
1278
1279 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1280                           show_pwm_enable, set_pwm_enable, 2);
1281 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1282 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1283 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1284                           show_pwm_temp_map, set_pwm_temp_map, 2);
1285 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1286                             show_auto_pwm, set_auto_pwm, 2, 0);
1287 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1288                             show_auto_pwm, set_auto_pwm, 2, 1);
1289 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1290                             show_auto_pwm, set_auto_pwm, 2, 2);
1291 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1292                             show_auto_pwm, NULL, 2, 3);
1293 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1294                             show_auto_temp, set_auto_temp, 2, 1);
1295 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1296                             show_auto_temp, set_auto_temp, 2, 0);
1297 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1298                             show_auto_temp, set_auto_temp, 2, 2);
1299 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1300                             show_auto_temp, set_auto_temp, 2, 3);
1301 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1302                             show_auto_temp, set_auto_temp, 2, 4);
1303
1304 /* Alarms */
1305 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1306                 char *buf)
1307 {
1308         struct it87_data *data = it87_update_device(dev);
1309         return sprintf(buf, "%u\n", data->alarms);
1310 }
1311 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1312
1313 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1314                 char *buf)
1315 {
1316         int bitnr = to_sensor_dev_attr(attr)->index;
1317         struct it87_data *data = it87_update_device(dev);
1318         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1319 }
1320
1321 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1322                 *attr, const char *buf, size_t count)
1323 {
1324         struct it87_data *data = dev_get_drvdata(dev);
1325         long val;
1326         int config;
1327
1328         if (kstrtol(buf, 10, &val) < 0 || val != 0)
1329                 return -EINVAL;
1330
1331         mutex_lock(&data->update_lock);
1332         config = it87_read_value(data, IT87_REG_CONFIG);
1333         if (config < 0) {
1334                 count = config;
1335         } else {
1336                 config |= 1 << 5;
1337                 it87_write_value(data, IT87_REG_CONFIG, config);
1338                 /* Invalidate cache to force re-read */
1339                 data->valid = 0;
1340         }
1341         mutex_unlock(&data->update_lock);
1342
1343         return count;
1344 }
1345
1346 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1347 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1348 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1349 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1350 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1351 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1352 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1353 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1354 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1355 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1356 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1357 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1358 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1359 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1360 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1361 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1362 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1363                           show_alarm, clear_intrusion, 4);
1364
1365 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1366                 char *buf)
1367 {
1368         int bitnr = to_sensor_dev_attr(attr)->index;
1369         struct it87_data *data = it87_update_device(dev);
1370         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1371 }
1372 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1373                 const char *buf, size_t count)
1374 {
1375         int bitnr = to_sensor_dev_attr(attr)->index;
1376         struct it87_data *data = dev_get_drvdata(dev);
1377         long val;
1378
1379         if (kstrtol(buf, 10, &val) < 0
1380          || (val != 0 && val != 1))
1381                 return -EINVAL;
1382
1383         mutex_lock(&data->update_lock);
1384         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1385         if (val)
1386                 data->beeps |= (1 << bitnr);
1387         else
1388                 data->beeps &= ~(1 << bitnr);
1389         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1390         mutex_unlock(&data->update_lock);
1391         return count;
1392 }
1393
1394 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1395                           show_beep, set_beep, 1);
1396 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1397 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1398 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1399 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1400 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1401 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1402 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1403 /* fanX_beep writability is set later */
1404 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1405 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1406 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1407 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1408 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1409 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1410                           show_beep, set_beep, 2);
1411 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1412 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1413
1414 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1415                 char *buf)
1416 {
1417         struct it87_data *data = dev_get_drvdata(dev);
1418         return sprintf(buf, "%u\n", data->vrm);
1419 }
1420 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1421                 const char *buf, size_t count)
1422 {
1423         struct it87_data *data = dev_get_drvdata(dev);
1424         unsigned long val;
1425
1426         if (kstrtoul(buf, 10, &val) < 0)
1427                 return -EINVAL;
1428
1429         data->vrm = val;
1430
1431         return count;
1432 }
1433 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1434
1435 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1436                 char *buf)
1437 {
1438         struct it87_data *data = it87_update_device(dev);
1439         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1440 }
1441 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1442
1443 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1444                 char *buf)
1445 {
1446         static const char * const labels[] = {
1447                 "+5V",
1448                 "5VSB",
1449                 "Vbat",
1450         };
1451         static const char * const labels_it8721[] = {
1452                 "+3.3V",
1453                 "3VSB",
1454                 "Vbat",
1455         };
1456         struct it87_data *data = dev_get_drvdata(dev);
1457         int nr = to_sensor_dev_attr(attr)->index;
1458
1459         return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1460                                                        : labels[nr]);
1461 }
1462 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1463 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1464 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1465 /* special AVCC3 IT8603E in9 */
1466 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 0);
1467
1468 static ssize_t show_name(struct device *dev, struct device_attribute
1469                          *devattr, char *buf)
1470 {
1471         struct it87_data *data = dev_get_drvdata(dev);
1472         return sprintf(buf, "%s\n", data->name);
1473 }
1474 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1475
1476 static struct attribute *it87_attributes_in[10][5] = {
1477 {
1478         &sensor_dev_attr_in0_input.dev_attr.attr,
1479         &sensor_dev_attr_in0_min.dev_attr.attr,
1480         &sensor_dev_attr_in0_max.dev_attr.attr,
1481         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1482         NULL
1483 }, {
1484         &sensor_dev_attr_in1_input.dev_attr.attr,
1485         &sensor_dev_attr_in1_min.dev_attr.attr,
1486         &sensor_dev_attr_in1_max.dev_attr.attr,
1487         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1488         NULL
1489 }, {
1490         &sensor_dev_attr_in2_input.dev_attr.attr,
1491         &sensor_dev_attr_in2_min.dev_attr.attr,
1492         &sensor_dev_attr_in2_max.dev_attr.attr,
1493         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1494         NULL
1495 }, {
1496         &sensor_dev_attr_in3_input.dev_attr.attr,
1497         &sensor_dev_attr_in3_min.dev_attr.attr,
1498         &sensor_dev_attr_in3_max.dev_attr.attr,
1499         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1500         NULL
1501 }, {
1502         &sensor_dev_attr_in4_input.dev_attr.attr,
1503         &sensor_dev_attr_in4_min.dev_attr.attr,
1504         &sensor_dev_attr_in4_max.dev_attr.attr,
1505         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1506         NULL
1507 }, {
1508         &sensor_dev_attr_in5_input.dev_attr.attr,
1509         &sensor_dev_attr_in5_min.dev_attr.attr,
1510         &sensor_dev_attr_in5_max.dev_attr.attr,
1511         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1512         NULL
1513 }, {
1514         &sensor_dev_attr_in6_input.dev_attr.attr,
1515         &sensor_dev_attr_in6_min.dev_attr.attr,
1516         &sensor_dev_attr_in6_max.dev_attr.attr,
1517         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1518         NULL
1519 }, {
1520         &sensor_dev_attr_in7_input.dev_attr.attr,
1521         &sensor_dev_attr_in7_min.dev_attr.attr,
1522         &sensor_dev_attr_in7_max.dev_attr.attr,
1523         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1524         NULL
1525 }, {
1526         &sensor_dev_attr_in8_input.dev_attr.attr,
1527         NULL
1528 }, {
1529         &sensor_dev_attr_in9_input.dev_attr.attr,
1530         NULL
1531 } };
1532
1533 static const struct attribute_group it87_group_in[10] = {
1534         { .attrs = it87_attributes_in[0] },
1535         { .attrs = it87_attributes_in[1] },
1536         { .attrs = it87_attributes_in[2] },
1537         { .attrs = it87_attributes_in[3] },
1538         { .attrs = it87_attributes_in[4] },
1539         { .attrs = it87_attributes_in[5] },
1540         { .attrs = it87_attributes_in[6] },
1541         { .attrs = it87_attributes_in[7] },
1542         { .attrs = it87_attributes_in[8] },
1543         { .attrs = it87_attributes_in[9] },
1544 };
1545
1546 static struct attribute *it87_attributes_temp[3][6] = {
1547 {
1548         &sensor_dev_attr_temp1_input.dev_attr.attr,
1549         &sensor_dev_attr_temp1_max.dev_attr.attr,
1550         &sensor_dev_attr_temp1_min.dev_attr.attr,
1551         &sensor_dev_attr_temp1_type.dev_attr.attr,
1552         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1553         NULL
1554 } , {
1555         &sensor_dev_attr_temp2_input.dev_attr.attr,
1556         &sensor_dev_attr_temp2_max.dev_attr.attr,
1557         &sensor_dev_attr_temp2_min.dev_attr.attr,
1558         &sensor_dev_attr_temp2_type.dev_attr.attr,
1559         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1560         NULL
1561 } , {
1562         &sensor_dev_attr_temp3_input.dev_attr.attr,
1563         &sensor_dev_attr_temp3_max.dev_attr.attr,
1564         &sensor_dev_attr_temp3_min.dev_attr.attr,
1565         &sensor_dev_attr_temp3_type.dev_attr.attr,
1566         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1567         NULL
1568 } };
1569
1570 static const struct attribute_group it87_group_temp[3] = {
1571         { .attrs = it87_attributes_temp[0] },
1572         { .attrs = it87_attributes_temp[1] },
1573         { .attrs = it87_attributes_temp[2] },
1574 };
1575
1576 static struct attribute *it87_attributes_temp_offset[] = {
1577         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1578         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1579         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1580 };
1581
1582 static struct attribute *it87_attributes[] = {
1583         &dev_attr_alarms.attr,
1584         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1585         &dev_attr_name.attr,
1586         NULL
1587 };
1588
1589 static const struct attribute_group it87_group = {
1590         .attrs = it87_attributes,
1591 };
1592
1593 static struct attribute *it87_attributes_in_beep[] = {
1594         &sensor_dev_attr_in0_beep.dev_attr.attr,
1595         &sensor_dev_attr_in1_beep.dev_attr.attr,
1596         &sensor_dev_attr_in2_beep.dev_attr.attr,
1597         &sensor_dev_attr_in3_beep.dev_attr.attr,
1598         &sensor_dev_attr_in4_beep.dev_attr.attr,
1599         &sensor_dev_attr_in5_beep.dev_attr.attr,
1600         &sensor_dev_attr_in6_beep.dev_attr.attr,
1601         &sensor_dev_attr_in7_beep.dev_attr.attr,
1602         NULL,
1603         NULL,
1604 };
1605
1606 static struct attribute *it87_attributes_temp_beep[] = {
1607         &sensor_dev_attr_temp1_beep.dev_attr.attr,
1608         &sensor_dev_attr_temp2_beep.dev_attr.attr,
1609         &sensor_dev_attr_temp3_beep.dev_attr.attr,
1610 };
1611
1612 static struct attribute *it87_attributes_fan[5][3+1] = { {
1613         &sensor_dev_attr_fan1_input.dev_attr.attr,
1614         &sensor_dev_attr_fan1_min.dev_attr.attr,
1615         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1616         NULL
1617 }, {
1618         &sensor_dev_attr_fan2_input.dev_attr.attr,
1619         &sensor_dev_attr_fan2_min.dev_attr.attr,
1620         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1621         NULL
1622 }, {
1623         &sensor_dev_attr_fan3_input.dev_attr.attr,
1624         &sensor_dev_attr_fan3_min.dev_attr.attr,
1625         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1626         NULL
1627 }, {
1628         &sensor_dev_attr_fan4_input.dev_attr.attr,
1629         &sensor_dev_attr_fan4_min.dev_attr.attr,
1630         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1631         NULL
1632 }, {
1633         &sensor_dev_attr_fan5_input.dev_attr.attr,
1634         &sensor_dev_attr_fan5_min.dev_attr.attr,
1635         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1636         NULL
1637 } };
1638
1639 static const struct attribute_group it87_group_fan[5] = {
1640         { .attrs = it87_attributes_fan[0] },
1641         { .attrs = it87_attributes_fan[1] },
1642         { .attrs = it87_attributes_fan[2] },
1643         { .attrs = it87_attributes_fan[3] },
1644         { .attrs = it87_attributes_fan[4] },
1645 };
1646
1647 static const struct attribute *it87_attributes_fan_div[] = {
1648         &sensor_dev_attr_fan1_div.dev_attr.attr,
1649         &sensor_dev_attr_fan2_div.dev_attr.attr,
1650         &sensor_dev_attr_fan3_div.dev_attr.attr,
1651 };
1652
1653 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1654         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1655         &sensor_dev_attr_pwm1.dev_attr.attr,
1656         &dev_attr_pwm1_freq.attr,
1657         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1658         NULL
1659 }, {
1660         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1661         &sensor_dev_attr_pwm2.dev_attr.attr,
1662         &dev_attr_pwm2_freq.attr,
1663         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1664         NULL
1665 }, {
1666         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1667         &sensor_dev_attr_pwm3.dev_attr.attr,
1668         &dev_attr_pwm3_freq.attr,
1669         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1670         NULL
1671 } };
1672
1673 static const struct attribute_group it87_group_pwm[3] = {
1674         { .attrs = it87_attributes_pwm[0] },
1675         { .attrs = it87_attributes_pwm[1] },
1676         { .attrs = it87_attributes_pwm[2] },
1677 };
1678
1679 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1680         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1681         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1682         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1683         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1684         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1685         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1686         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1687         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1688         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1689         NULL
1690 }, {
1691         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1692         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1693         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1694         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1695         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1696         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1697         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1698         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1699         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1700         NULL
1701 }, {
1702         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1703         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1704         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1705         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1706         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1707         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1708         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1709         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1710         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1711         NULL
1712 } };
1713
1714 static const struct attribute_group it87_group_autopwm[3] = {
1715         { .attrs = it87_attributes_autopwm[0] },
1716         { .attrs = it87_attributes_autopwm[1] },
1717         { .attrs = it87_attributes_autopwm[2] },
1718 };
1719
1720 static struct attribute *it87_attributes_fan_beep[] = {
1721         &sensor_dev_attr_fan1_beep.dev_attr.attr,
1722         &sensor_dev_attr_fan2_beep.dev_attr.attr,
1723         &sensor_dev_attr_fan3_beep.dev_attr.attr,
1724         &sensor_dev_attr_fan4_beep.dev_attr.attr,
1725         &sensor_dev_attr_fan5_beep.dev_attr.attr,
1726 };
1727
1728 static struct attribute *it87_attributes_vid[] = {
1729         &dev_attr_vrm.attr,
1730         &dev_attr_cpu0_vid.attr,
1731         NULL
1732 };
1733
1734 static const struct attribute_group it87_group_vid = {
1735         .attrs = it87_attributes_vid,
1736 };
1737
1738 static struct attribute *it87_attributes_label[] = {
1739         &sensor_dev_attr_in3_label.dev_attr.attr,
1740         &sensor_dev_attr_in7_label.dev_attr.attr,
1741         &sensor_dev_attr_in8_label.dev_attr.attr,
1742         &sensor_dev_attr_in9_label.dev_attr.attr,
1743         NULL
1744 };
1745
1746 static const struct attribute_group it87_group_label = {
1747         .attrs = it87_attributes_label,
1748 };
1749
1750 /* SuperIO detection - will change isa_address if a chip is found */
1751 static int __init it87_find(unsigned short *address,
1752         struct it87_sio_data *sio_data)
1753 {
1754         int err;
1755         u16 chip_type;
1756         const char *board_vendor, *board_name;
1757
1758         err = superio_enter();
1759         if (err)
1760                 return err;
1761
1762         err = -ENODEV;
1763         chip_type = force_id ? force_id : superio_inw(DEVID);
1764
1765         switch (chip_type) {
1766         case IT8705F_DEVID:
1767                 sio_data->type = it87;
1768                 break;
1769         case IT8712F_DEVID:
1770                 sio_data->type = it8712;
1771                 break;
1772         case IT8716F_DEVID:
1773         case IT8726F_DEVID:
1774                 sio_data->type = it8716;
1775                 break;
1776         case IT8718F_DEVID:
1777                 sio_data->type = it8718;
1778                 break;
1779         case IT8720F_DEVID:
1780                 sio_data->type = it8720;
1781                 break;
1782         case IT8721F_DEVID:
1783                 sio_data->type = it8721;
1784                 break;
1785         case IT8728F_DEVID:
1786                 sio_data->type = it8728;
1787                 break;
1788         case IT8771E_DEVID:
1789                 sio_data->type = it8771;
1790                 break;
1791         case IT8772E_DEVID:
1792                 sio_data->type = it8772;
1793                 break;
1794         case IT8781F_DEVID:
1795                 sio_data->type = it8781;
1796                 break;
1797         case IT8782F_DEVID:
1798                 sio_data->type = it8782;
1799                 break;
1800         case IT8783E_DEVID:
1801                 sio_data->type = it8783;
1802                 break;
1803         case IT8786E_DEVID:
1804                 sio_data->type = it8786;
1805                 break;
1806         case IT8603E_DEVID:
1807         case IT8623E_DEVID:
1808                 sio_data->type = it8603;
1809                 break;
1810         case 0xffff:    /* No device at all */
1811                 goto exit;
1812         default:
1813                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1814                 goto exit;
1815         }
1816
1817         superio_select(PME);
1818         if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1819                 pr_info("Device not activated, skipping\n");
1820                 goto exit;
1821         }
1822
1823         *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1824         if (*address == 0) {
1825                 pr_info("Base address not set, skipping\n");
1826                 goto exit;
1827         }
1828
1829         err = 0;
1830         sio_data->revision = superio_inb(DEVREV) & 0x0f;
1831         pr_info("Found IT%04x%c chip at 0x%x, revision %d\n", chip_type,
1832                 chip_type == 0x8771 || chip_type == 0x8772 ||
1833                 chip_type == 0x8603 || chip_type == 0x8786 ? 'E' : 'F', *address,
1834                 sio_data->revision);
1835
1836         /* in8 (Vbat) is always internal */
1837         sio_data->internal = (1 << 2);
1838         /* Only the IT8603E has in9 */
1839         if (sio_data->type != it8603)
1840                 sio_data->skip_in |= (1 << 9);
1841
1842         if (!(it87_devices[sio_data->type].features & FEAT_VID))
1843                 sio_data->skip_vid = 1;
1844
1845         /* Read GPIO config and VID value from LDN 7 (GPIO) */
1846         if (sio_data->type == it87) {
1847                 /* The IT8705F has a different LD number for GPIO */
1848                 superio_select(5);
1849                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1850         } else if (sio_data->type == it8783) {
1851                 int reg25, reg27, reg2a, reg2c, regef;
1852
1853                 superio_select(GPIO);
1854
1855                 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1856                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1857                 reg2a = superio_inb(IT87_SIO_PINX1_REG);
1858                 reg2c = superio_inb(IT87_SIO_PINX2_REG);
1859                 regef = superio_inb(IT87_SIO_SPI_REG);
1860
1861                 /* Check if fan3 is there or not */
1862                 if ((reg27 & (1 << 0)) || !(reg2c & (1 << 2)))
1863                         sio_data->skip_fan |= (1 << 2);
1864                 if ((reg25 & (1 << 4))
1865                     || (!(reg2a & (1 << 1)) && (regef & (1 << 0))))
1866                         sio_data->skip_pwm |= (1 << 2);
1867
1868                 /* Check if fan2 is there or not */
1869                 if (reg27 & (1 << 7))
1870                         sio_data->skip_fan |= (1 << 1);
1871                 if (reg27 & (1 << 3))
1872                         sio_data->skip_pwm |= (1 << 1);
1873
1874                 /* VIN5 */
1875                 if ((reg27 & (1 << 0)) || (reg2c & (1 << 2)))
1876                         sio_data->skip_in |= (1 << 5); /* No VIN5 */
1877
1878                 /* VIN6 */
1879                 if (reg27 & (1 << 1))
1880                         sio_data->skip_in |= (1 << 6); /* No VIN6 */
1881
1882                 /*
1883                  * VIN7
1884                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1885                  */
1886                 if (reg27 & (1 << 2)) {
1887                         /*
1888                          * The data sheet is a bit unclear regarding the
1889                          * internal voltage divider for VCCH5V. It says
1890                          * "This bit enables and switches VIN7 (pin 91) to the
1891                          * internal voltage divider for VCCH5V".
1892                          * This is different to other chips, where the internal
1893                          * voltage divider would connect VIN7 to an internal
1894                          * voltage source. Maybe that is the case here as well.
1895                          *
1896                          * Since we don't know for sure, re-route it if that is
1897                          * not the case, and ask the user to report if the
1898                          * resulting voltage is sane.
1899                          */
1900                         if (!(reg2c & (1 << 1))) {
1901                                 reg2c |= (1 << 1);
1902                                 superio_outb(IT87_SIO_PINX2_REG, reg2c);
1903                                 pr_notice("Routing internal VCCH5V to in7.\n");
1904                         }
1905                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1906                         pr_notice("Please report if it displays a reasonable voltage.\n");
1907                 }
1908
1909                 if (reg2c & (1 << 0))
1910                         sio_data->internal |= (1 << 0);
1911                 if (reg2c & (1 << 1))
1912                         sio_data->internal |= (1 << 1);
1913
1914                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1915         } else if (sio_data->type == it8603) {
1916                 int reg27, reg29;
1917
1918                 superio_select(GPIO);
1919
1920                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1921
1922                 /* Check if fan3 is there or not */
1923                 if (reg27 & (1 << 6))
1924                         sio_data->skip_pwm |= (1 << 2);
1925                 if (reg27 & (1 << 7))
1926                         sio_data->skip_fan |= (1 << 2);
1927
1928                 /* Check if fan2 is there or not */
1929                 reg29 = superio_inb(IT87_SIO_GPIO5_REG);
1930                 if (reg29 & (1 << 1))
1931                         sio_data->skip_pwm |= (1 << 1);
1932                 if (reg29 & (1 << 2))
1933                         sio_data->skip_fan |= (1 << 1);
1934
1935                 sio_data->skip_in |= (1 << 5); /* No VIN5 */
1936                 sio_data->skip_in |= (1 << 6); /* No VIN6 */
1937
1938                 /* no fan4 */
1939                 sio_data->skip_pwm |= (1 << 3);
1940                 sio_data->skip_fan |= (1 << 3);
1941
1942                 sio_data->internal |= (1 << 1); /* in7 is VSB */
1943                 sio_data->internal |= (1 << 3); /* in9 is AVCC */
1944
1945                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1946         } else {
1947                 int reg;
1948                 bool uart6;
1949
1950                 superio_select(GPIO);
1951
1952                 reg = superio_inb(IT87_SIO_GPIO3_REG);
1953                 if (!sio_data->skip_vid) {
1954                         /* We need at least 4 VID pins */
1955                         if (reg & 0x0f) {
1956                                 pr_info("VID is disabled (pins used for GPIO)\n");
1957                                 sio_data->skip_vid = 1;
1958                         }
1959                 }
1960
1961                 /* Check if fan3 is there or not */
1962                 if (reg & (1 << 6))
1963                         sio_data->skip_pwm |= (1 << 2);
1964                 if (reg & (1 << 7))
1965                         sio_data->skip_fan |= (1 << 2);
1966
1967                 /* Check if fan2 is there or not */
1968                 reg = superio_inb(IT87_SIO_GPIO5_REG);
1969                 if (reg & (1 << 1))
1970                         sio_data->skip_pwm |= (1 << 1);
1971                 if (reg & (1 << 2))
1972                         sio_data->skip_fan |= (1 << 1);
1973
1974                 if (!sio_data->skip_vid)
1975                         sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1976
1977                 reg = superio_inb(IT87_SIO_PINX2_REG);
1978
1979                 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1980
1981                 /*
1982                  * The IT8720F has no VIN7 pin, so VCCH should always be
1983                  * routed internally to VIN7 with an internal divider.
1984                  * Curiously, there still is a configuration bit to control
1985                  * this, which means it can be set incorrectly. And even
1986                  * more curiously, many boards out there are improperly
1987                  * configured, even though the IT8720F datasheet claims
1988                  * that the internal routing of VCCH to VIN7 is the default
1989                  * setting. So we force the internal routing in this case.
1990                  *
1991                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1992                  * If UART6 is enabled, re-route VIN7 to the internal divider
1993                  * if that is not already the case.
1994                  */
1995                 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1996                         reg |= (1 << 1);
1997                         superio_outb(IT87_SIO_PINX2_REG, reg);
1998                         pr_notice("Routing internal VCCH to in7\n");
1999                 }
2000                 if (reg & (1 << 0))
2001                         sio_data->internal |= (1 << 0);
2002                 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
2003                     sio_data->type == it8728 ||
2004                     sio_data->type == it8771 ||
2005                     sio_data->type == it8772 || sio_data->type == it8786)
2006                         sio_data->internal |= (1 << 1);
2007
2008                 /*
2009                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
2010                  * While VIN7 can be routed to the internal voltage divider,
2011                  * VIN5 and VIN6 are not available if UART6 is enabled.
2012                  *
2013                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
2014                  * is the temperature source. Since we can not read the
2015                  * temperature source here, skip_temp is preliminary.
2016                  */
2017                 if (uart6) {
2018                         sio_data->skip_in |= (1 << 5) | (1 << 6);
2019                         sio_data->skip_temp |= (1 << 2);
2020                 }
2021
2022                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
2023         }
2024         if (sio_data->beep_pin)
2025                 pr_info("Beeping is supported\n");
2026
2027         /* Disable specific features based on DMI strings */
2028         board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
2029         board_name = dmi_get_system_info(DMI_BOARD_NAME);
2030         if (board_vendor && board_name) {
2031                 if (strcmp(board_vendor, "nVIDIA") == 0
2032                  && strcmp(board_name, "FN68PT") == 0) {
2033                         /*
2034                          * On the Shuttle SN68PT, FAN_CTL2 is apparently not
2035                          * connected to a fan, but to something else. One user
2036                          * has reported instant system power-off when changing
2037                          * the PWM2 duty cycle, so we disable it.
2038                          * I use the board name string as the trigger in case
2039                          * the same board is ever used in other systems.
2040                          */
2041                         pr_info("Disabling pwm2 due to hardware constraints\n");
2042                         sio_data->skip_pwm = (1 << 1);
2043                 }
2044         }
2045
2046 exit:
2047         superio_exit();
2048         return err;
2049 }
2050
2051 static void it87_remove_files(struct device *dev)
2052 {
2053         struct it87_data *data = platform_get_drvdata(pdev);
2054         struct it87_sio_data *sio_data = dev_get_platdata(dev);
2055         int i;
2056
2057         sysfs_remove_group(&dev->kobj, &it87_group);
2058         for (i = 0; i < 10; i++) {
2059                 if (sio_data->skip_in & (1 << i))
2060                         continue;
2061                 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
2062                 if (it87_attributes_in_beep[i])
2063                         sysfs_remove_file(&dev->kobj,
2064                                           it87_attributes_in_beep[i]);
2065         }
2066         for (i = 0; i < 3; i++) {
2067                 if (!(data->has_temp & (1 << i)))
2068                         continue;
2069                 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
2070                 if (has_temp_offset(data))
2071                         sysfs_remove_file(&dev->kobj,
2072                                           it87_attributes_temp_offset[i]);
2073                 if (sio_data->beep_pin)
2074                         sysfs_remove_file(&dev->kobj,
2075                                           it87_attributes_temp_beep[i]);
2076         }
2077         for (i = 0; i < 5; i++) {
2078                 if (!(data->has_fan & (1 << i)))
2079                         continue;
2080                 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
2081                 if (sio_data->beep_pin)
2082                         sysfs_remove_file(&dev->kobj,
2083                                           it87_attributes_fan_beep[i]);
2084                 if (i < 3 && !has_16bit_fans(data))
2085                         sysfs_remove_file(&dev->kobj,
2086                                           it87_attributes_fan_div[i]);
2087         }
2088         for (i = 0; i < 3; i++) {
2089                 if (sio_data->skip_pwm & (1 << 0))
2090                         continue;
2091                 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
2092                 if (has_old_autopwm(data))
2093                         sysfs_remove_group(&dev->kobj,
2094                                            &it87_group_autopwm[i]);
2095         }
2096         if (!sio_data->skip_vid)
2097                 sysfs_remove_group(&dev->kobj, &it87_group_vid);
2098         sysfs_remove_group(&dev->kobj, &it87_group_label);
2099 }
2100
2101 static int it87_probe(struct platform_device *pdev)
2102 {
2103         struct it87_data *data;
2104         struct resource *res;
2105         struct device *dev = &pdev->dev;
2106         struct it87_sio_data *sio_data = dev_get_platdata(dev);
2107         int err = 0, i;
2108         int enable_pwm_interface;
2109         int fan_beep_need_rw;
2110
2111         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2112         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
2113                                  DRVNAME)) {
2114                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2115                         (unsigned long)res->start,
2116                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
2117                 return -EBUSY;
2118         }
2119
2120         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2121         if (!data)
2122                 return -ENOMEM;
2123
2124         data->addr = res->start;
2125         data->type = sio_data->type;
2126         data->features = it87_devices[sio_data->type].features;
2127         data->peci_mask = it87_devices[sio_data->type].peci_mask;
2128         data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
2129         data->name = it87_devices[sio_data->type].name;
2130         /*
2131          * IT8705F Datasheet 0.4.1, 3h == Version G.
2132          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
2133          * These are the first revisions with 16-bit tachometer support.
2134          */
2135         switch (data->type) {
2136         case it87:
2137                 if (sio_data->revision >= 0x03) {
2138                         data->features &= ~FEAT_OLD_AUTOPWM;
2139                         data->features |= FEAT_16BIT_FANS;
2140                 }
2141                 break;
2142         case it8712:
2143                 if (sio_data->revision >= 0x08) {
2144                         data->features &= ~FEAT_OLD_AUTOPWM;
2145                         data->features |= FEAT_16BIT_FANS | FEAT_FIVE_FANS;
2146                 }
2147                 break;
2148         default:
2149                 break;
2150         }
2151
2152         /* Now, we do the remaining detection. */
2153         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2154          || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2155                 return -ENODEV;
2156
2157         platform_set_drvdata(pdev, data);
2158
2159         mutex_init(&data->update_lock);
2160
2161         /* Check PWM configuration */
2162         enable_pwm_interface = it87_check_pwm(dev);
2163
2164         /* Starting with IT8721F, we handle scaling of internal voltages */
2165         if (has_12mv_adc(data)) {
2166                 if (sio_data->internal & (1 << 0))
2167                         data->in_scaled |= (1 << 3);    /* in3 is AVCC */
2168                 if (sio_data->internal & (1 << 1))
2169                         data->in_scaled |= (1 << 7);    /* in7 is VSB */
2170                 if (sio_data->internal & (1 << 2))
2171                         data->in_scaled |= (1 << 8);    /* in8 is Vbat */
2172                 if (sio_data->internal & (1 << 3))
2173                         data->in_scaled |= (1 << 9);    /* in9 is AVCC */
2174         } else if (sio_data->type == it8781 || sio_data->type == it8782 ||
2175                    sio_data->type == it8783) {
2176                 if (sio_data->internal & (1 << 0))
2177                         data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
2178                 if (sio_data->internal & (1 << 1))
2179                         data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
2180         }
2181
2182         data->has_temp = 0x07;
2183         if (sio_data->skip_temp & (1 << 2)) {
2184                 if (sio_data->type == it8782
2185                     && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2186                         data->has_temp &= ~(1 << 2);
2187         }
2188
2189         /* Initialize the IT87 chip */
2190         it87_init_device(pdev);
2191
2192         /* Register sysfs hooks */
2193         err = sysfs_create_group(&dev->kobj, &it87_group);
2194         if (err)
2195                 return err;
2196
2197         for (i = 0; i < 10; i++) {
2198                 if (sio_data->skip_in & (1 << i))
2199                         continue;
2200                 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2201                 if (err)
2202                         goto error;
2203                 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2204                         err = sysfs_create_file(&dev->kobj,
2205                                                 it87_attributes_in_beep[i]);
2206                         if (err)
2207                                 goto error;
2208                 }
2209         }
2210
2211         for (i = 0; i < 3; i++) {
2212                 if (!(data->has_temp & (1 << i)))
2213                         continue;
2214                 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2215                 if (err)
2216                         goto error;
2217                 if (has_temp_offset(data)) {
2218                         err = sysfs_create_file(&dev->kobj,
2219                                                 it87_attributes_temp_offset[i]);
2220                         if (err)
2221                                 goto error;
2222                 }
2223                 if (sio_data->beep_pin) {
2224                         err = sysfs_create_file(&dev->kobj,
2225                                                 it87_attributes_temp_beep[i]);
2226                         if (err)
2227                                 goto error;
2228                 }
2229         }
2230
2231         /* Do not create fan files for disabled fans */
2232         fan_beep_need_rw = 1;
2233         for (i = 0; i < 5; i++) {
2234                 if (!(data->has_fan & (1 << i)))
2235                         continue;
2236                 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2237                 if (err)
2238                         goto error;
2239
2240                 if (i < 3 && !has_16bit_fans(data)) {
2241                         err = sysfs_create_file(&dev->kobj,
2242                                                 it87_attributes_fan_div[i]);
2243                         if (err)
2244                                 goto error;
2245                 }
2246
2247                 if (sio_data->beep_pin) {
2248                         err = sysfs_create_file(&dev->kobj,
2249                                                 it87_attributes_fan_beep[i]);
2250                         if (err)
2251                                 goto error;
2252                         if (!fan_beep_need_rw)
2253                                 continue;
2254
2255                         /*
2256                          * As we have a single beep enable bit for all fans,
2257                          * only the first enabled fan has a writable attribute
2258                          * for it.
2259                          */
2260                         if (sysfs_chmod_file(&dev->kobj,
2261                                              it87_attributes_fan_beep[i],
2262                                              S_IRUGO | S_IWUSR))
2263                                 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2264                                         i + 1);
2265                         fan_beep_need_rw = 0;
2266                 }
2267         }
2268
2269         if (enable_pwm_interface) {
2270                 for (i = 0; i < 3; i++) {
2271                         if (sio_data->skip_pwm & (1 << i))
2272                                 continue;
2273                         err = sysfs_create_group(&dev->kobj,
2274                                                  &it87_group_pwm[i]);
2275                         if (err)
2276                                 goto error;
2277
2278                         if (!has_old_autopwm(data))
2279                                 continue;
2280                         err = sysfs_create_group(&dev->kobj,
2281                                                  &it87_group_autopwm[i]);
2282                         if (err)
2283                                 goto error;
2284                 }
2285         }
2286
2287         if (!sio_data->skip_vid) {
2288                 data->vrm = vid_which_vrm();
2289                 /* VID reading from Super-I/O config space if available */
2290                 data->vid = sio_data->vid_value;
2291                 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2292                 if (err)
2293                         goto error;
2294         }
2295
2296         /* Export labels for internal sensors */
2297         for (i = 0; i < 4; i++) {
2298                 if (!(sio_data->internal & (1 << i)))
2299                         continue;
2300                 err = sysfs_create_file(&dev->kobj,
2301                                         it87_attributes_label[i]);
2302                 if (err)
2303                         goto error;
2304         }
2305
2306         data->hwmon_dev = hwmon_device_register(dev);
2307         if (IS_ERR(data->hwmon_dev)) {
2308                 err = PTR_ERR(data->hwmon_dev);
2309                 goto error;
2310         }
2311
2312         return 0;
2313
2314 error:
2315         it87_remove_files(dev);
2316         return err;
2317 }
2318
2319 static int it87_remove(struct platform_device *pdev)
2320 {
2321         struct it87_data *data = platform_get_drvdata(pdev);
2322
2323         hwmon_device_unregister(data->hwmon_dev);
2324         it87_remove_files(&pdev->dev);
2325
2326         return 0;
2327 }
2328
2329 /*
2330  * Must be called with data->update_lock held, except during initialization.
2331  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2332  * would slow down the IT87 access and should not be necessary.
2333  */
2334 static int it87_read_value(struct it87_data *data, u8 reg)
2335 {
2336         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2337         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2338 }
2339
2340 /*
2341  * Must be called with data->update_lock held, except during initialization.
2342  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2343  * would slow down the IT87 access and should not be necessary.
2344  */
2345 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2346 {
2347         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2348         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2349 }
2350
2351 /* Return 1 if and only if the PWM interface is safe to use */
2352 static int it87_check_pwm(struct device *dev)
2353 {
2354         struct it87_data *data = dev_get_drvdata(dev);
2355         /*
2356          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2357          * and polarity set to active low is sign that this is the case so we
2358          * disable pwm control to protect the user.
2359          */
2360         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2361         if ((tmp & 0x87) == 0) {
2362                 if (fix_pwm_polarity) {
2363                         /*
2364                          * The user asks us to attempt a chip reconfiguration.
2365                          * This means switching to active high polarity and
2366                          * inverting all fan speed values.
2367                          */
2368                         int i;
2369                         u8 pwm[3];
2370
2371                         for (i = 0; i < 3; i++)
2372                                 pwm[i] = it87_read_value(data,
2373                                                          IT87_REG_PWM(i));
2374
2375                         /*
2376                          * If any fan is in automatic pwm mode, the polarity
2377                          * might be correct, as suspicious as it seems, so we
2378                          * better don't change anything (but still disable the
2379                          * PWM interface).
2380                          */
2381                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2382                                 dev_info(dev,
2383                                          "Reconfiguring PWM to active high polarity\n");
2384                                 it87_write_value(data, IT87_REG_FAN_CTL,
2385                                                  tmp | 0x87);
2386                                 for (i = 0; i < 3; i++)
2387                                         it87_write_value(data,
2388                                                          IT87_REG_PWM(i),
2389                                                          0x7f & ~pwm[i]);
2390                                 return 1;
2391                         }
2392
2393                         dev_info(dev,
2394                                  "PWM configuration is too broken to be fixed\n");
2395                 }
2396
2397                 dev_info(dev,
2398                          "Detected broken BIOS defaults, disabling PWM interface\n");
2399                 return 0;
2400         } else if (fix_pwm_polarity) {
2401                 dev_info(dev,
2402                          "PWM configuration looks sane, won't touch\n");
2403         }
2404
2405         return 1;
2406 }
2407
2408 /* Called when we have found a new IT87. */
2409 static void it87_init_device(struct platform_device *pdev)
2410 {
2411         struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
2412         struct it87_data *data = platform_get_drvdata(pdev);
2413         int tmp, i;
2414         u8 mask;
2415
2416         /*
2417          * For each PWM channel:
2418          * - If it is in automatic mode, setting to manual mode should set
2419          *   the fan to full speed by default.
2420          * - If it is in manual mode, we need a mapping to temperature
2421          *   channels to use when later setting to automatic mode later.
2422          *   Use a 1:1 mapping by default (we are clueless.)
2423          * In both cases, the value can (and should) be changed by the user
2424          * prior to switching to a different mode.
2425          * Note that this is no longer needed for the IT8721F and later, as
2426          * these have separate registers for the temperature mapping and the
2427          * manual duty cycle.
2428          */
2429         for (i = 0; i < 3; i++) {
2430                 data->pwm_temp_map[i] = i;
2431                 data->pwm_duty[i] = 0x7f;       /* Full speed */
2432                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2433         }
2434
2435         /*
2436          * Some chips seem to have default value 0xff for all limit
2437          * registers. For low voltage limits it makes no sense and triggers
2438          * alarms, so change to 0 instead. For high temperature limits, it
2439          * means -1 degree C, which surprisingly doesn't trigger an alarm,
2440          * but is still confusing, so change to 127 degrees C.
2441          */
2442         for (i = 0; i < 8; i++) {
2443                 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2444                 if (tmp == 0xff)
2445                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2446         }
2447         for (i = 0; i < 3; i++) {
2448                 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2449                 if (tmp == 0xff)
2450                         it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2451         }
2452
2453         /*
2454          * Temperature channels are not forcibly enabled, as they can be
2455          * set to two different sensor types and we can't guess which one
2456          * is correct for a given system. These channels can be enabled at
2457          * run-time through the temp{1-3}_type sysfs accessors if needed.
2458          */
2459
2460         /* Check if voltage monitors are reset manually or by some reason */
2461         tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2462         if ((tmp & 0xff) == 0) {
2463                 /* Enable all voltage monitors */
2464                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2465         }
2466
2467         /* Check if tachometers are reset manually or by some reason */
2468         mask = 0x70 & ~(sio_data->skip_fan << 4);
2469         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2470         if ((data->fan_main_ctrl & mask) == 0) {
2471                 /* Enable all fan tachometers */
2472                 data->fan_main_ctrl |= mask;
2473                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2474                                  data->fan_main_ctrl);
2475         }
2476         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2477
2478         /* Set tachometers to 16-bit mode if needed. */
2479         if (has_fan16_config(data)) {
2480                 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2481                 if (~tmp & 0x07 & data->has_fan) {
2482                         dev_dbg(&pdev->dev,
2483                                 "Setting fan1-3 to 16-bit mode\n");
2484                         it87_write_value(data, IT87_REG_FAN_16BIT,
2485                                          tmp | 0x07);
2486                 }
2487         }
2488
2489         /* Check for additional fans */
2490         if (has_five_fans(data)) {
2491                 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2492                 if (tmp & (1 << 4))
2493                         data->has_fan |= (1 << 3); /* fan4 enabled */
2494                 if (tmp & (1 << 5))
2495                         data->has_fan |= (1 << 4); /* fan5 enabled */
2496         }
2497
2498         /* Fan input pins may be used for alternative functions */
2499         data->has_fan &= ~sio_data->skip_fan;
2500
2501         /* Start monitoring */
2502         it87_write_value(data, IT87_REG_CONFIG,
2503                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2504                          | (update_vbat ? 0x41 : 0x01));
2505 }
2506
2507 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2508 {
2509         data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2510         if (has_newer_autopwm(data)) {
2511                 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2512                 data->pwm_duty[nr] = it87_read_value(data,
2513                                                      IT87_REG_PWM_DUTY(nr));
2514         } else {
2515                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
2516                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2517                 else                            /* Manual mode */
2518                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2519         }
2520
2521         if (has_old_autopwm(data)) {
2522                 int i;
2523
2524                 for (i = 0; i < 5 ; i++)
2525                         data->auto_temp[nr][i] = it87_read_value(data,
2526                                                 IT87_REG_AUTO_TEMP(nr, i));
2527                 for (i = 0; i < 3 ; i++)
2528                         data->auto_pwm[nr][i] = it87_read_value(data,
2529                                                 IT87_REG_AUTO_PWM(nr, i));
2530         }
2531 }
2532
2533 static struct it87_data *it87_update_device(struct device *dev)
2534 {
2535         struct it87_data *data = dev_get_drvdata(dev);
2536         int i;
2537
2538         mutex_lock(&data->update_lock);
2539
2540         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2541             || !data->valid) {
2542                 if (update_vbat) {
2543                         /*
2544                          * Cleared after each update, so reenable.  Value
2545                          * returned by this read will be previous value
2546                          */
2547                         it87_write_value(data, IT87_REG_CONFIG,
2548                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2549                 }
2550                 for (i = 0; i <= 7; i++) {
2551                         data->in[i][0] =
2552                                 it87_read_value(data, IT87_REG_VIN(i));
2553                         data->in[i][1] =
2554                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
2555                         data->in[i][2] =
2556                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
2557                 }
2558                 /* in8 (battery) has no limit registers */
2559                 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2560                 if (data->type == it8603)
2561                         data->in[9][0] = it87_read_value(data, 0x2f);
2562
2563                 for (i = 0; i < 5; i++) {
2564                         /* Skip disabled fans */
2565                         if (!(data->has_fan & (1 << i)))
2566                                 continue;
2567
2568                         data->fan[i][1] =
2569                                 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2570                         data->fan[i][0] = it87_read_value(data,
2571                                        IT87_REG_FAN[i]);
2572                         /* Add high byte if in 16-bit mode */
2573                         if (has_16bit_fans(data)) {
2574                                 data->fan[i][0] |= it87_read_value(data,
2575                                                 IT87_REG_FANX[i]) << 8;
2576                                 data->fan[i][1] |= it87_read_value(data,
2577                                                 IT87_REG_FANX_MIN[i]) << 8;
2578                         }
2579                 }
2580                 for (i = 0; i < 3; i++) {
2581                         if (!(data->has_temp & (1 << i)))
2582                                 continue;
2583                         data->temp[i][0] =
2584                                 it87_read_value(data, IT87_REG_TEMP(i));
2585                         data->temp[i][1] =
2586                                 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2587                         data->temp[i][2] =
2588                                 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2589                         if (has_temp_offset(data))
2590                                 data->temp[i][3] =
2591                                   it87_read_value(data,
2592                                                   IT87_REG_TEMP_OFFSET[i]);
2593                 }
2594
2595                 /* Newer chips don't have clock dividers */
2596                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2597                         i = it87_read_value(data, IT87_REG_FAN_DIV);
2598                         data->fan_div[0] = i & 0x07;
2599                         data->fan_div[1] = (i >> 3) & 0x07;
2600                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
2601                 }
2602
2603                 data->alarms =
2604                         it87_read_value(data, IT87_REG_ALARM1) |
2605                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2606                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
2607                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2608
2609                 data->fan_main_ctrl = it87_read_value(data,
2610                                 IT87_REG_FAN_MAIN_CTRL);
2611                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2612                 for (i = 0; i < 3; i++)
2613                         it87_update_pwm_ctrl(data, i);
2614
2615                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2616                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
2617                 /*
2618                  * The IT8705F does not have VID capability.
2619                  * The IT8718F and later don't use IT87_REG_VID for the
2620                  * same purpose.
2621                  */
2622                 if (data->type == it8712 || data->type == it8716) {
2623                         data->vid = it87_read_value(data, IT87_REG_VID);
2624                         /*
2625                          * The older IT8712F revisions had only 5 VID pins,
2626                          * but we assume it is always safe to read 6 bits.
2627                          */
2628                         data->vid &= 0x3f;
2629                 }
2630                 data->last_updated = jiffies;
2631                 data->valid = 1;
2632         }
2633
2634         mutex_unlock(&data->update_lock);
2635
2636         return data;
2637 }
2638
2639 static int __init it87_device_add(unsigned short address,
2640                                   const struct it87_sio_data *sio_data)
2641 {
2642         struct resource res = {
2643                 .start  = address + IT87_EC_OFFSET,
2644                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2645                 .name   = DRVNAME,
2646                 .flags  = IORESOURCE_IO,
2647         };
2648         int err;
2649
2650         err = acpi_check_resource_conflict(&res);
2651         if (err)
2652                 goto exit;
2653
2654         pdev = platform_device_alloc(DRVNAME, address);
2655         if (!pdev) {
2656                 err = -ENOMEM;
2657                 pr_err("Device allocation failed\n");
2658                 goto exit;
2659         }
2660
2661         err = platform_device_add_resources(pdev, &res, 1);
2662         if (err) {
2663                 pr_err("Device resource addition failed (%d)\n", err);
2664                 goto exit_device_put;
2665         }
2666
2667         err = platform_device_add_data(pdev, sio_data,
2668                                        sizeof(struct it87_sio_data));
2669         if (err) {
2670                 pr_err("Platform data allocation failed\n");
2671                 goto exit_device_put;
2672         }
2673
2674         err = platform_device_add(pdev);
2675         if (err) {
2676                 pr_err("Device addition failed (%d)\n", err);
2677                 goto exit_device_put;
2678         }
2679
2680         return 0;
2681
2682 exit_device_put:
2683         platform_device_put(pdev);
2684 exit:
2685         return err;
2686 }
2687
2688 static int __init sm_it87_init(void)
2689 {
2690         int err;
2691         unsigned short isa_address = 0;
2692         struct it87_sio_data sio_data;
2693
2694         memset(&sio_data, 0, sizeof(struct it87_sio_data));
2695         err = it87_find(&isa_address, &sio_data);
2696         if (err)
2697                 return err;
2698         err = platform_driver_register(&it87_driver);
2699         if (err)
2700                 return err;
2701
2702         err = it87_device_add(isa_address, &sio_data);
2703         if (err) {
2704                 platform_driver_unregister(&it87_driver);
2705                 return err;
2706         }
2707
2708         return 0;
2709 }
2710
2711 static void __exit sm_it87_exit(void)
2712 {
2713         platform_device_unregister(pdev);
2714         platform_driver_unregister(&it87_driver);
2715 }
2716
2717
2718 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
2719 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2720 module_param(update_vbat, bool, 0);
2721 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2722 module_param(fix_pwm_polarity, bool, 0);
2723 MODULE_PARM_DESC(fix_pwm_polarity,
2724                  "Force PWM polarity to active high (DANGEROUS)");
2725 MODULE_LICENSE("GPL");
2726
2727 module_init(sm_it87_init);
2728 module_exit(sm_it87_exit);