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