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  *            IT8620E  Super I/O chip w/LPC interface
  15  *            IT8623E  Super I/O chip w/LPC interface
  16  *            IT8705F  Super I/O chip w/LPC interface
  17  *            IT8712F  Super I/O chip w/LPC interface
  18  *            IT8716F  Super I/O chip w/LPC interface
  19  *            IT8718F  Super I/O chip w/LPC interface
  20  *            IT8720F  Super I/O chip w/LPC interface
  21  *            IT8721F  Super I/O chip w/LPC interface
  22  *            IT8726F  Super I/O chip w/LPC interface
  23  *            IT8728F  Super I/O chip w/LPC interface
  24  *            IT8758E  Super I/O chip w/LPC interface
  25  *            IT8771E  Super I/O chip w/LPC interface
  26  *            IT8772E  Super I/O chip w/LPC interface
  27  *            IT8781F  Super I/O chip w/LPC interface
  28  *            IT8782F  Super I/O chip w/LPC interface
  29  *            IT8783E/F Super I/O chip w/LPC interface
  30  *            IT8786E  Super I/O chip w/LPC interface
  31  *            IT8790E  Super I/O chip w/LPC interface
  32  *            Sis950   A clone of the IT8705F
  33  *
  34  *  Copyright (C) 2001 Chris Gauthron
  35  *  Copyright (C) 2005-2010 Jean Delvare <jdelvare@suse.de>
  36  *
  37  *  This program is free software; you can redistribute it and/or modify
  38  *  it under the terms of the GNU General Public License as published by
  39  *  the Free Software Foundation; either version 2 of the License, or
  40  *  (at your option) any later version.
  41  *
  42  *  This program is distributed in the hope that it will be useful,
  43  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  44  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  45  *  GNU General Public License for more details.
  46  *
  47  *  You should have received a copy of the GNU General Public License
  48  *  along with this program; if not, write to the Free Software
  49  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  50  */
  51
  52 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  53
  54 #include <linux/module.h>
  55 #include <linux/init.h>
  56 #include <linux/slab.h>
  57 #include <linux/jiffies.h>
  58 #include <linux/platform_device.h>
  59 #include <linux/hwmon.h>
  60 #include <linux/hwmon-sysfs.h>
  61 #include <linux/hwmon-vid.h>
  62 #include <linux/err.h>
  63 #include <linux/mutex.h>
  64 #include <linux/sysfs.h>
  65 #include <linux/string.h>
  66 #include <linux/dmi.h>
  67 #include <linux/acpi.h>
  68 #include <linux/io.h>
  69 #include "compat.h"
  70
  71 #define DRVNAME "it87"
  72
  73 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771,
  74              it8772, it8781, it8782, it8783, it8786, it8790, it8603, it8620 };
  75
  76 static unsigned short force_id;
  77 module_param(force_id, ushort, 0);
  78 MODULE_PARM_DESC(force_id, "Override the detected device ID");
  79
  80 static struct platform_device *pdev;
  81
  82 #define REG     0x2e    /* The register to read/write */
  83 #define DEV     0x07    /* Register: Logical device select */
  84 #define VAL     0x2f    /* The value to read/write */
  85 #define PME     0x04    /* The device with the fan registers in it */
  86
  87 /* The device with the IT8718F/IT8720F VID value in it */
  88 #define GPIO    0x07
  89
  90 #define DEVID   0x20    /* Register: Device ID */
  91 #define DEVREV  0x22    /* Register: Device Revision */
  92
  93 static inline int superio_inb(int reg)
  94 {
  95         outb(reg, REG);
  96         return inb(VAL);
  97 }
  98
  99 static inline void superio_outb(int reg, int val)
 100 {
 101         outb(reg, REG);
 102         outb(val, VAL);
 103 }
 104
 105 static int superio_inw(int reg)
 106 {
 107         int val;
 108         outb(reg++, REG);
 109         val = inb(VAL) << 8;
 110         outb(reg, REG);
 111         val |= inb(VAL);
 112         return val;
 113 }
 114
 115 static inline void superio_select(int ldn)
 116 {
 117         outb(DEV, REG);
 118         outb(ldn, VAL);
 119 }
 120
 121 static inline int superio_enter(void)
 122 {
 123         /*
 124          * Try to reserve REG and REG + 1 for exclusive access.
 125          */
 126         if (!request_muxed_region(REG, 2, DRVNAME))
 127                 return -EBUSY;
 128
 129         outb(0x87, REG);
 130         outb(0x01, REG);
 131         outb(0x55, REG);
 132         outb(0x55, REG);
 133         return 0;
 134 }
 135
 136 static inline void superio_exit(void)
 137 {
 138         outb(0x02, REG);
 139         outb(0x02, VAL);
 140         release_region(REG, 2);
 141 }
 142
 143 /* Logical device 4 registers */
 144 #define IT8712F_DEVID 0x8712
 145 #define IT8705F_DEVID 0x8705
 146 #define IT8716F_DEVID 0x8716
 147 #define IT8718F_DEVID 0x8718
 148 #define IT8720F_DEVID 0x8720
 149 #define IT8721F_DEVID 0x8721
 150 #define IT8726F_DEVID 0x8726
 151 #define IT8728F_DEVID 0x8728
 152 #define IT8771E_DEVID 0x8771
 153 #define IT8772E_DEVID 0x8772
 154 #define IT8781F_DEVID 0x8781
 155 #define IT8782F_DEVID 0x8782
 156 #define IT8783E_DEVID 0x8783
 157 #define IT8786E_DEVID 0x8786
 158 #define IT8603E_DEVID 0x8603
 159 #define IT8620E_DEVID 0x8620
 160 #define IT8623E_DEVID 0x8623
 161 #define IT8790E_DEVID 0x8790
 162 #define IT87_ACT_REG  0x30
 163 #define IT87_BASE_REG 0x60
 164
 165 /* Logical device 7 registers (IT8712F and later) */
 166 #define IT87_SIO_GPIO1_REG      0x25
 167 #define IT87_SIO_GPIO2_REG      0x26
 168 #define IT87_SIO_GPIO3_REG      0x27
 169 #define IT87_SIO_GPIO4_REG      0x28
 170 #define IT87_SIO_GPIO5_REG      0x29
 171 #define IT87_SIO_PINX1_REG      0x2a    /* Pin selection */
 172 #define IT87_SIO_PINX2_REG      0x2c    /* Pin selection */
 173 #define IT87_SIO_SPI_REG        0xef    /* SPI function pin select */
 174 #define IT87_SIO_VID_REG        0xfc    /* VID value */
 175 #define IT87_SIO_BEEP_PIN_REG   0xf6    /* Beep pin mapping */
 176
 177 /* Update battery voltage after every reading if true */
 178 static bool update_vbat;
 179
 180 /* Not all BIOSes properly configure the PWM registers */
 181 static bool fix_pwm_polarity;
 182
 183 /* Many IT87 constants specified below */
 184
 185 /* Length of ISA address segment */
 186 #define IT87_EXTENT 8
 187
 188 /* Length of ISA address segment for Environmental Controller */
 189 #define IT87_EC_EXTENT 2
 190
 191 /* Offset of EC registers from ISA base address */
 192 #define IT87_EC_OFFSET 5
 193
 194 /* Where are the ISA address/data registers relative to the EC base address */
 195 #define IT87_ADDR_REG_OFFSET 0
 196 #define IT87_DATA_REG_OFFSET 1
 197
 198 /*----- The IT87 registers -----*/
 199
 200 #define IT87_REG_CONFIG        0x00
 201
 202 #define IT87_REG_ALARM1        0x01
 203 #define IT87_REG_ALARM2        0x02
 204 #define IT87_REG_ALARM3        0x03
 205
 206 /*
 207  * The IT8718F and IT8720F have the VID value in a different register, in
 208  * Super-I/O configuration space.
 209  */
 210 #define IT87_REG_VID           0x0a
 211 /*
 212  * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
 213  * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
 214  * mode.
 215  */
 216 #define IT87_REG_FAN_DIV       0x0b
 217 #define IT87_REG_FAN_16BIT     0x0c
 218
 219 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
 220
 221 static const u8 IT87_REG_FAN[]          = {0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x4c};
 222 static const u8 IT87_REG_FAN_MIN[]      = {0x10, 0x11, 0x12, 0x84, 0x86, 0x4e};
 223 static const u8 IT87_REG_FANX[]         = {0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d};
 224 static const u8 IT87_REG_FANX_MIN[]     = {0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f};
 225 static const u8 IT87_REG_TEMP_OFFSET[]  = {0x56, 0x57, 0x59};
 226
 227 #define IT87_REG_FAN_MAIN_CTRL 0x13
 228 #define IT87_REG_FAN_CTL       0x14
 229 static const u8 IT87_REG_PWM[]          = {0x15, 0x16, 0x17, 0x7f, 0xa7, 0xaf};
 230 static const u8 IT87_REG_PWM_DUTY[]     = {0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab};
 231
 232 #define IT87_REG_VIN(nr)       (0x20 + (nr))
 233 #define IT87_REG_TEMP(nr)      (0x29 + (nr))
 234
 235 #define IT87_REG_AVCC3          0x2f
 236
 237 #define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 238 #define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 239 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
 240 #define IT87_REG_TEMP_LOW(nr)  (0x41 + (nr) * 2)
 241
 242 #define IT87_REG_VIN_ENABLE    0x50
 243 #define IT87_REG_TEMP_ENABLE   0x51
 244 #define IT87_REG_TEMP_EXTRA    0x55
 245 #define IT87_REG_BEEP_ENABLE   0x5c
 246
 247 #define IT87_REG_CHIPID        0x58
 248
 249 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
 250 #define IT87_REG_AUTO_PWM(nr, i)  (0x65 + (nr) * 8 + (i))
 251
 252 struct it87_devices {
 253         const char *name;
 254         u16 features;
 255         u8 peci_mask;
 256         u8 old_peci_mask;
 257         const char * const suffix;
 258 };
 259
 260 #define FEAT_12MV_ADC           (1 << 0)
 261 #define FEAT_NEWER_AUTOPWM      (1 << 1)
 262 #define FEAT_OLD_AUTOPWM        (1 << 2)
 263 #define FEAT_16BIT_FANS         (1 << 3)
 264 #define FEAT_TEMP_OFFSET        (1 << 4)
 265 #define FEAT_TEMP_PECI          (1 << 5)
 266 #define FEAT_TEMP_OLD_PECI      (1 << 6)
 267 #define FEAT_FAN16_CONFIG       (1 << 7)        /* Need to enable 16-bit fans */
 268 #define FEAT_FIVE_FANS          (1 << 8)        /* Supports five fans */
 269 #define FEAT_SIX_FANS           (1 << 9)        /* Supports six fans */
 270 #define FEAT_VID                (1 << 10)       /* Set if chip supports VID */
 271 #define FEAT_IN7_INTERNAL       (1 << 11)       /* Set if in7 is internal */
 272 #define FEAT_AVCC3              (1 << 12)       /* Chip supports in9/AVCC3 */
 273 #define FEAT_SIX_PWM            (1 << 13)       /* Chip supports 6 pwm chn */
 274 #define FEAT_PWM_FREQ2          (1 << 14)       /* Separate pwm freq 2 */
 275
 276 static const struct it87_devices it87_devices[] = {
 277         [it87] = {
 278                 .name = "it87",
 279                 .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
 280                 .suffix = "F",
 281         },
 282         [it8712] = {
 283                 .name = "it8712",
 284                 .features = FEAT_OLD_AUTOPWM | FEAT_VID,
 285                                                 /* may need to overwrite */
 286                 .suffix = "F",
 287         },
 288         [it8716] = {
 289                 .name = "it8716",
 290                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 291                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_PWM_FREQ2,
 292                 .suffix = "F",
 293         },
 294         [it8718] = {
 295                 .name = "it8718",
 296                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 297                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
 298                   | FEAT_PWM_FREQ2,
 299                 .old_peci_mask = 0x4,
 300                 .suffix = "F",
 301         },
 302         [it8720] = {
 303                 .name = "it8720",
 304                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 305                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
 306                   | FEAT_PWM_FREQ2,
 307                 .old_peci_mask = 0x4,
 308                 .suffix = "F",
 309         },
 310         [it8721] = {
 311                 .name = "it8721",
 312                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 313                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 314                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_IN7_INTERNAL
 315                   | FEAT_PWM_FREQ2,
 316                 .peci_mask = 0x05,
 317                 .old_peci_mask = 0x02,  /* Actually reports PCH */
 318                 .suffix = "F",
 319         },
 320         [it8728] = {
 321                 .name = "it8728",
 322                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 323                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
 324                   | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2,
 325                 .peci_mask = 0x07,
 326                 .suffix = "F",
 327         },
 328         [it8771] = {
 329                 .name = "it8771",
 330                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 331                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 332                   | FEAT_PWM_FREQ2,
 333                                 /* PECI: guesswork */
 334                                 /* 12mV ADC (OHM) */
 335                                 /* 16 bit fans (OHM) */
 336                                 /* three fans, always 16 bit (guesswork) */
 337                 .peci_mask = 0x07,
 338                 .suffix = "E",
 339         },
 340         [it8772] = {
 341                 .name = "it8772",
 342                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 343                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 344                   | FEAT_PWM_FREQ2,
 345                                 /* PECI (coreboot) */
 346                                 /* 12mV ADC (HWSensors4, OHM) */
 347                                 /* 16 bit fans (HWSensors4, OHM) */
 348                                 /* three fans, always 16 bit (datasheet) */
 349                 .peci_mask = 0x07,
 350                 .suffix = "E",
 351         },
 352         [it8781] = {
 353                 .name = "it8781",
 354                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 355                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
 356                 .old_peci_mask = 0x4,
 357                 .suffix = "F",
 358         },
 359         [it8782] = {
 360                 .name = "it8782",
 361                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 362                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
 363                 .old_peci_mask = 0x4,
 364                 .suffix = "F",
 365         },
 366         [it8783] = {
 367                 .name = "it8783",
 368                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 369                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
 370                 .old_peci_mask = 0x4,
 371                 .suffix = "E/F",
 372         },
 373         [it8786] = {
 374                 .name = "it8786",
 375                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 376                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 377                   | FEAT_PWM_FREQ2,
 378                 .peci_mask = 0x07,
 379                 .suffix = "E",
 380         },
 381         [it8790] = {
 382                 .name = "it8790",
 383                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 384                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 385                   | FEAT_PWM_FREQ2,
 386                 .peci_mask = 0x07,
 387                 .suffix = "E",
 388         },
 389         [it8603] = {
 390                 .name = "it8603",
 391                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 392                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 393                   | FEAT_AVCC3 | FEAT_PWM_FREQ2,
 394                 .peci_mask = 0x07,
 395                 .suffix = "E",
 396         },
 397         [it8620] = {
 398                 .name = "it8620",
 399                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 400                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
 401                   | FEAT_IN7_INTERNAL | FEAT_AVCC3 | FEAT_SIX_PWM
 402                   | FEAT_PWM_FREQ2,
 403                 .peci_mask = 0x07,
 404                 .suffix = "E",
 405         },
 406 };
 407
 408 #define has_16bit_fans(data)    ((data)->features & FEAT_16BIT_FANS)
 409 #define has_12mv_adc(data)      ((data)->features & FEAT_12MV_ADC)
 410 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
 411 #define has_old_autopwm(data)   ((data)->features & FEAT_OLD_AUTOPWM)
 412 #define has_temp_offset(data)   ((data)->features & FEAT_TEMP_OFFSET)
 413 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
 414                                  ((data)->peci_mask & (1 << nr)))
 415 #define has_temp_old_peci(data, nr) \
 416                                 (((data)->features & FEAT_TEMP_OLD_PECI) && \
 417                                  ((data)->old_peci_mask & (1 << nr)))
 418 #define has_fan16_config(data)  ((data)->features & FEAT_FAN16_CONFIG)
 419 #define has_five_fans(data)     ((data)->features & (FEAT_FIVE_FANS | \
 420                                                      FEAT_SIX_FANS))
 421 #define has_six_fans(data)      ((data)->features & FEAT_SIX_FANS)
 422 #define has_vid(data)           ((data)->features & FEAT_VID)
 423 #define has_in7_internal(data)  ((data)->features & FEAT_IN7_INTERNAL)
 424 #define has_avcc3(data)         ((data)->features & FEAT_AVCC3)
 425 #define has_six_pwm(data)       ((data)->features & FEAT_SIX_PWM)
 426 #define has_pwm_freq2(data)     ((data)->features & FEAT_PWM_FREQ2)
 427
 428 struct it87_sio_data {
 429         enum chips type;
 430         /* Values read from Super-I/O config space */
 431         u8 revision;
 432         u8 vid_value;
 433         u8 beep_pin;
 434         u8 internal;    /* Internal sensors can be labeled */
 435         /* Features skipped based on config or DMI */
 436         u16 skip_in;
 437         u8 skip_vid;
 438         u8 skip_fan;
 439         u8 skip_pwm;
 440         u8 skip_temp;
 441 };
 442
 443 /*
 444  * For each registered chip, we need to keep some data in memory.
 445  * The structure is dynamically allocated.
 446  */
 447 struct it87_data {
 448         struct device *hwmon_dev;
 449         enum chips type;
 450         u16 features;
 451         u8 peci_mask;
 452         u8 old_peci_mask;
 453
 454         unsigned short addr;
 455         const char *name;
 456         struct mutex update_lock;
 457         char valid;             /* !=0 if following fields are valid */
 458         unsigned long last_updated;     /* In jiffies */
 459
 460         u16 in_scaled;          /* Internal voltage sensors are scaled */
 461         u8 in[10][3];           /* [nr][0]=in, [1]=min, [2]=max */
 462         u8 has_fan;             /* Bitfield, fans enabled */
 463         u16 fan[6][2];          /* Register values, [nr][0]=fan, [1]=min */
 464         u8 has_temp;            /* Bitfield, temp sensors enabled */
 465         s8 temp[3][4];          /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 466         u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
 467         u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
 468         u8 fan_div[3];          /* Register encoding, shifted right */
 469         u8 vid;                 /* Register encoding, combined */
 470         u8 vrm;
 471         u32 alarms;             /* Register encoding, combined */
 472         u8 beeps;               /* Register encoding */
 473         u8 fan_main_ctrl;       /* Register value */
 474         u8 fan_ctl;             /* Register value */
 475
 476         /*
 477          * The following 3 arrays correspond to the same registers up to
 478          * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 479          * 7, and we want to preserve settings on mode changes, so we have
 480          * to track all values separately.
 481          * Starting with the IT8721F, the manual PWM duty cycles are stored
 482          * in separate registers (8-bit values), so the separate tracking
 483          * is no longer needed, but it is still done to keep the driver
 484          * simple.
 485          */
 486         u8 pwm_ctrl[6];         /* Register value */
 487         u8 pwm_duty[6];         /* Manual PWM value set by user */
 488         u8 pwm_temp_map[6];     /* PWM to temp. chan. mapping (bits 1-0) */
 489
 490         /* Automatic fan speed control registers */
 491         u8 auto_pwm[3][4];      /* [nr][3] is hard-coded */
 492         s8 auto_temp[3][5];     /* [nr][0] is point1_temp_hyst */
 493 };
 494
 495 static int adc_lsb(const struct it87_data *data, int nr)
 496 {
 497         int lsb = has_12mv_adc(data) ? 12 : 16;
 498         if (data->in_scaled & (1 << nr))
 499                 lsb <<= 1;
 500         return lsb;
 501 }
 502
 503 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 504 {
 505         val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
 506         return clamp_val(val, 0, 255);
 507 }
 508
 509 static int in_from_reg(const struct it87_data *data, int nr, int val)
 510 {
 511         return val * adc_lsb(data, nr);
 512 }
 513
 514 static inline u8 FAN_TO_REG(long rpm, int div)
 515 {
 516         if (rpm == 0)
 517                 return 255;
 518         rpm = clamp_val(rpm, 1, 1000000);
 519         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 520 }
 521
 522 static inline u16 FAN16_TO_REG(long rpm)
 523 {
 524         if (rpm == 0)
 525                 return 0xffff;
 526         return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 527 }
 528
 529 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 530                                 1350000 / ((val) * (div)))
 531 /* The divider is fixed to 2 in 16-bit mode */
 532 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 533                              1350000 / ((val) * 2))
 534
 535 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
 536                                     ((val) + 500) / 1000), -128, 127))
 537 #define TEMP_FROM_REG(val) ((val) * 1000)
 538
 539 static u8 pwm_to_reg(const struct it87_data *data, long val)
 540 {
 541         if (has_newer_autopwm(data))
 542                 return val;
 543         else
 544                 return val >> 1;
 545 }
 546
 547 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 548 {
 549         if (has_newer_autopwm(data))
 550                 return reg;
 551         else
 552                 return (reg & 0x7f) << 1;
 553 }
 554
 555
 556 static int DIV_TO_REG(int val)
 557 {
 558         int answer = 0;
 559         while (answer < 7 && (val >>= 1))
 560                 answer++;
 561         return answer;
 562 }
 563 #define DIV_FROM_REG(val) (1 << (val))
 564
 565 static const unsigned int pwm_freq[8] = {
 566         48000000,
 567         24000000,
 568         12000000,
 569         8000000,
 570         6000000,
 571         3000000,
 572         1500000,
 573         750000,
 574 };
 575
 576 static int it87_probe(struct platform_device *pdev);
 577 static int it87_remove(struct platform_device *pdev);
 578
 579 static int it87_read_value(struct it87_data *data, u8 reg);
 580 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
 581 static struct it87_data *it87_update_device(struct device *dev);
 582 static int it87_check_pwm(struct device *dev);
 583 static void it87_init_device(struct platform_device *pdev);
 584
 585
 586 static struct platform_driver it87_driver = {
 587         .driver = {
 588                 .name   = DRVNAME,
 589         },
 590         .probe  = it87_probe,
 591         .remove = it87_remove,
 592 };
 593
 594 static ssize_t show_in(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
 601         struct it87_data *data = it87_update_device(dev);
 602         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 603 }
 604
 605 static ssize_t set_in(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
 612         struct it87_data *data = dev_get_drvdata(dev);
 613         unsigned long val;
 614
 615         if (kstrtoul(buf, 10, &val) < 0)
 616                 return -EINVAL;
 617
 618         mutex_lock(&data->update_lock);
 619         data->in[nr][index] = in_to_reg(data, nr, val);
 620         it87_write_value(data,
 621                          index == 1 ? IT87_REG_VIN_MIN(nr)
 622                                     : IT87_REG_VIN_MAX(nr),
 623                          data->in[nr][index]);
 624         mutex_unlock(&data->update_lock);
 625         return count;
 626 }
 627
 628 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 629 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 630                             0, 1);
 631 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 632                             0, 2);
 633
 634 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 635 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 636                             1, 1);
 637 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 638                             1, 2);
 639
 640 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 641 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 642                             2, 1);
 643 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 644                             2, 2);
 645
 646 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 647 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 648                             3, 1);
 649 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 650                             3, 2);
 651
 652 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 653 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 654                             4, 1);
 655 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 656                             4, 2);
 657
 658 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 659 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 660                             5, 1);
 661 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 662                             5, 2);
 663
 664 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 665 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 666                             6, 1);
 667 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 668                             6, 2);
 669
 670 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 671 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 672                             7, 1);
 673 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 674                             7, 2);
 675
 676 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 677 static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
 678
 679 /* 3 temperatures */
 680 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 681                          char *buf)
 682 {
 683         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 684         int nr = sattr->nr;
 685         int index = sattr->index;
 686         struct it87_data *data = it87_update_device(dev);
 687
 688         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 689 }
 690
 691 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 692                         const char *buf, size_t count)
 693 {
 694         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 695         int nr = sattr->nr;
 696         int index = sattr->index;
 697         struct it87_data *data = dev_get_drvdata(dev);
 698         long val;
 699         u8 reg, regval;
 700
 701         if (kstrtol(buf, 10, &val) < 0)
 702                 return -EINVAL;
 703
 704         mutex_lock(&data->update_lock);
 705
 706         switch (index) {
 707         default:
 708         case 1:
 709                 reg = IT87_REG_TEMP_LOW(nr);
 710                 break;
 711         case 2:
 712                 reg = IT87_REG_TEMP_HIGH(nr);
 713                 break;
 714         case 3:
 715                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 716                 if (!(regval & 0x80)) {
 717                         regval |= 0x80;
 718                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 719                 }
 720                 data->valid = 0;
 721                 reg = IT87_REG_TEMP_OFFSET[nr];
 722                 break;
 723         }
 724
 725         data->temp[nr][index] = TEMP_TO_REG(val);
 726         it87_write_value(data, reg, data->temp[nr][index]);
 727         mutex_unlock(&data->update_lock);
 728         return count;
 729 }
 730
 731 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
 732 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 733                             0, 1);
 734 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 735                             0, 2);
 736 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
 737                             set_temp, 0, 3);
 738 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
 739 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 740                             1, 1);
 741 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 742                             1, 2);
 743 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
 744                             set_temp, 1, 3);
 745 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
 746 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 747                             2, 1);
 748 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 749                             2, 2);
 750 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
 751                             set_temp, 2, 3);
 752
 753 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
 754                               char *buf)
 755 {
 756         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 757         int nr = sensor_attr->index;
 758         struct it87_data *data = it87_update_device(dev);
 759         u8 reg = data->sensor;      /* In case value is updated while used */
 760         u8 extra = data->extra;
 761
 762         if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
 763             || (has_temp_old_peci(data, nr) && (extra & 0x80)))
 764                 return sprintf(buf, "6\n");  /* Intel PECI */
 765         if (reg & (1 << nr))
 766                 return sprintf(buf, "3\n");  /* thermal diode */
 767         if (reg & (8 << nr))
 768                 return sprintf(buf, "4\n");  /* thermistor */
 769         return sprintf(buf, "0\n");      /* disabled */
 770 }
 771
 772 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
 773                              const char *buf, size_t count)
 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 = dev_get_drvdata(dev);
 779         long val;
 780         u8 reg, extra;
 781
 782         if (kstrtol(buf, 10, &val) < 0)
 783                 return -EINVAL;
 784
 785         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 786         reg &= ~(1 << nr);
 787         reg &= ~(8 << nr);
 788         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
 789                 reg &= 0x3f;
 790         extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
 791         if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
 792                 extra &= 0x7f;
 793         if (val == 2) { /* backwards compatibility */
 794                 dev_warn(dev,
 795                          "Sensor type 2 is deprecated, please use 4 instead\n");
 796                 val = 4;
 797         }
 798         /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
 799         if (val == 3)
 800                 reg |= 1 << nr;
 801         else if (val == 4)
 802                 reg |= 8 << nr;
 803         else if (has_temp_peci(data, nr) && val == 6)
 804                 reg |= (nr + 1) << 6;
 805         else if (has_temp_old_peci(data, nr) && val == 6)
 806                 extra |= 0x80;
 807         else if (val != 0)
 808                 return -EINVAL;
 809
 810         mutex_lock(&data->update_lock);
 811         data->sensor = reg;
 812         data->extra = extra;
 813         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
 814         if (has_temp_old_peci(data, nr))
 815                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
 816         data->valid = 0;        /* Force cache refresh */
 817         mutex_unlock(&data->update_lock);
 818         return count;
 819 }
 820
 821 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
 822                           set_temp_type, 0);
 823 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
 824                           set_temp_type, 1);
 825 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
 826                           set_temp_type, 2);
 827
 828 /* 3 Fans */
 829
 830 static int pwm_mode(const struct it87_data *data, int nr)
 831 {
 832         int ctrl = data->fan_main_ctrl & (1 << nr);
 833
 834         if (ctrl == 0 && data->type != it8603)          /* Full speed */
 835                 return 0;
 836         if (data->pwm_ctrl[nr] & 0x80)                  /* Automatic mode */
 837                 return 2;
 838         else                                            /* Manual mode */
 839                 return 1;
 840 }
 841
 842 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 843                         char *buf)
 844 {
 845         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 846         int nr = sattr->nr;
 847         int index = sattr->index;
 848         int speed;
 849         struct it87_data *data = it87_update_device(dev);
 850
 851         speed = has_16bit_fans(data) ?
 852                 FAN16_FROM_REG(data->fan[nr][index]) :
 853                 FAN_FROM_REG(data->fan[nr][index],
 854                              DIV_FROM_REG(data->fan_div[nr]));
 855         return sprintf(buf, "%d\n", speed);
 856 }
 857
 858 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 859                 char *buf)
 860 {
 861         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 862         int nr = sensor_attr->index;
 863
 864         struct it87_data *data = it87_update_device(dev);
 865         return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
 866 }
 867 static ssize_t show_pwm_enable(struct device *dev,
 868                 struct device_attribute *attr, char *buf)
 869 {
 870         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 871         int nr = sensor_attr->index;
 872
 873         struct it87_data *data = it87_update_device(dev);
 874         return sprintf(buf, "%d\n", pwm_mode(data, nr));
 875 }
 876 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 877                 char *buf)
 878 {
 879         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 880         int nr = sensor_attr->index;
 881
 882         struct it87_data *data = it87_update_device(dev);
 883         return sprintf(buf, "%d\n",
 884                        pwm_from_reg(data, data->pwm_duty[nr]));
 885 }
 886 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
 887                 char *buf)
 888 {
 889         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 890         struct it87_data *data = it87_update_device(dev);
 891         int nr = sensor_attr->index;
 892         unsigned int freq;
 893         int index;
 894
 895         if (has_pwm_freq2(data) && nr == 1)
 896                 index = (data->extra >> 4) & 0x07;
 897         else
 898                 index = (data->fan_ctl >> 4) & 0x07;
 899
 900         freq = pwm_freq[index] / has_newer_autopwm(data) ? 256 : 128;
 901
 902         return sprintf(buf, "%u\n", freq);
 903 }
 904
 905 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 906                        const char *buf, size_t count)
 907 {
 908         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 909         int nr = sattr->nr;
 910         int index = sattr->index;
 911
 912         struct it87_data *data = dev_get_drvdata(dev);
 913         long val;
 914         u8 reg;
 915
 916         if (kstrtol(buf, 10, &val) < 0)
 917                 return -EINVAL;
 918
 919         mutex_lock(&data->update_lock);
 920
 921         if (has_16bit_fans(data)) {
 922                 data->fan[nr][index] = FAN16_TO_REG(val);
 923                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 924                                  data->fan[nr][index] & 0xff);
 925                 it87_write_value(data, IT87_REG_FANX_MIN[nr],
 926                                  data->fan[nr][index] >> 8);
 927         } else {
 928                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
 929                 switch (nr) {
 930                 case 0:
 931                         data->fan_div[nr] = reg & 0x07;
 932                         break;
 933                 case 1:
 934                         data->fan_div[nr] = (reg >> 3) & 0x07;
 935                         break;
 936                 case 2:
 937                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
 938                         break;
 939                 }
 940                 data->fan[nr][index] =
 941                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 942                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 943                                  data->fan[nr][index]);
 944         }
 945
 946         mutex_unlock(&data->update_lock);
 947         return count;
 948 }
 949
 950 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 951                 const char *buf, size_t count)
 952 {
 953         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 954         int nr = sensor_attr->index;
 955
 956         struct it87_data *data = dev_get_drvdata(dev);
 957         unsigned long val;
 958         int min;
 959         u8 old;
 960
 961         if (kstrtoul(buf, 10, &val) < 0)
 962                 return -EINVAL;
 963
 964         mutex_lock(&data->update_lock);
 965         old = it87_read_value(data, IT87_REG_FAN_DIV);
 966
 967         /* Save fan min limit */
 968         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
 969
 970         switch (nr) {
 971         case 0:
 972         case 1:
 973                 data->fan_div[nr] = DIV_TO_REG(val);
 974                 break;
 975         case 2:
 976                 if (val < 8)
 977                         data->fan_div[nr] = 1;
 978                 else
 979                         data->fan_div[nr] = 3;
 980         }
 981         val = old & 0x80;
 982         val |= (data->fan_div[0] & 0x07);
 983         val |= (data->fan_div[1] & 0x07) << 3;
 984         if (data->fan_div[2] == 3)
 985                 val |= 0x1 << 6;
 986         it87_write_value(data, IT87_REG_FAN_DIV, val);
 987
 988         /* Restore fan min limit */
 989         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 990         it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
 991
 992         mutex_unlock(&data->update_lock);
 993         return count;
 994 }
 995
 996 /* Returns 0 if OK, -EINVAL otherwise */
 997 static int check_trip_points(struct device *dev, int nr)
 998 {
 999         const struct it87_data *data = dev_get_drvdata(dev);
1000         int i, err = 0;
1001
1002         if (has_old_autopwm(data)) {
1003                 for (i = 0; i < 3; i++) {
1004                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1005                                 err = -EINVAL;
1006                 }
1007                 for (i = 0; i < 2; i++) {
1008                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
1009                                 err = -EINVAL;
1010                 }
1011         }
1012
1013         if (err) {
1014                 dev_err(dev,
1015                         "Inconsistent trip points, not switching to automatic mode\n");
1016                 dev_err(dev, "Adjust the trip points and try again\n");
1017         }
1018         return err;
1019 }
1020
1021 static ssize_t set_pwm_enable(struct device *dev,
1022                 struct device_attribute *attr, const char *buf, size_t count)
1023 {
1024         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1025         int nr = sensor_attr->index;
1026
1027         struct it87_data *data = dev_get_drvdata(dev);
1028         long val;
1029
1030         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
1031                 return -EINVAL;
1032
1033         /* Check trip points before switching to automatic mode */
1034         if (val == 2) {
1035                 if (check_trip_points(dev, nr) < 0)
1036                         return -EINVAL;
1037         }
1038
1039         /* IT8603E does not have on/off mode */
1040         if (val == 0 && data->type == it8603)
1041                 return -EINVAL;
1042
1043         mutex_lock(&data->update_lock);
1044
1045         if (val == 0) {
1046                 int tmp;
1047                 /* make sure the fan is on when in on/off mode */
1048                 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1049                 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
1050                 /* set on/off mode */
1051                 data->fan_main_ctrl &= ~(1 << nr);
1052                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1053                                  data->fan_main_ctrl);
1054         } else {
1055                 if (val == 1)                           /* Manual mode */
1056                         data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
1057                                              data->pwm_temp_map[nr] :
1058                                              data->pwm_duty[nr];
1059                 else                                    /* Automatic mode */
1060                         data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1061                 it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]);
1062
1063                 if (data->type != it8603) {
1064                         /* set SmartGuardian mode */
1065                         data->fan_main_ctrl |= (1 << nr);
1066                         it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1067                                          data->fan_main_ctrl);
1068                 }
1069         }
1070
1071         mutex_unlock(&data->update_lock);
1072         return count;
1073 }
1074 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1075                 const char *buf, size_t count)
1076 {
1077         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1078         int nr = sensor_attr->index;
1079
1080         struct it87_data *data = dev_get_drvdata(dev);
1081         long val;
1082
1083         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1084                 return -EINVAL;
1085
1086         mutex_lock(&data->update_lock);
1087         if (has_newer_autopwm(data)) {
1088                 /*
1089                  * If we are in automatic mode, the PWM duty cycle register
1090                  * is read-only so we can't write the value.
1091                  */
1092                 if (data->pwm_ctrl[nr] & 0x80) {
1093                         mutex_unlock(&data->update_lock);
1094                         return -EBUSY;
1095                 }
1096                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1097                 it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1098                                  data->pwm_duty[nr]);
1099         } else {
1100                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1101                 /*
1102                  * If we are in manual mode, write the duty cycle immediately;
1103                  * otherwise, just store it for later use.
1104                  */
1105                 if (!(data->pwm_ctrl[nr] & 0x80)) {
1106                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
1107                         it87_write_value(data, IT87_REG_PWM[nr],
1108                                          data->pwm_ctrl[nr]);
1109                 }
1110         }
1111         mutex_unlock(&data->update_lock);
1112         return count;
1113 }
1114 static ssize_t set_pwm_freq(struct device *dev,
1115                 struct device_attribute *attr, const char *buf, size_t count)
1116 {
1117         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1118         struct it87_data *data = dev_get_drvdata(dev);
1119         int nr = sensor_attr->index;
1120         unsigned long val;
1121         int i;
1122
1123         if (kstrtoul(buf, 10, &val) < 0)
1124                 return -EINVAL;
1125
1126         val = clamp_val(val, 0, 1000000);
1127         val *= has_newer_autopwm(data) ? 256 : 128;
1128
1129         /* Search for the nearest available frequency */
1130         for (i = 0; i < 7; i++) {
1131                 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
1132                         break;
1133         }
1134
1135         mutex_lock(&data->update_lock);
1136         if (nr == 0) {
1137                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1138                 data->fan_ctl |= i << 4;
1139                 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1140         } else {
1141                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x8f;
1142                 data->extra |= i << 4;
1143                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1144         }
1145         mutex_unlock(&data->update_lock);
1146
1147         return count;
1148 }
1149 static ssize_t show_pwm_temp_map(struct device *dev,
1150                 struct device_attribute *attr, char *buf)
1151 {
1152         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1153         int nr = sensor_attr->index;
1154
1155         struct it87_data *data = it87_update_device(dev);
1156         int map;
1157
1158         if (data->pwm_temp_map[nr] < 3)
1159                 map = 1 << data->pwm_temp_map[nr];
1160         else
1161                 map = 0;                        /* Should never happen */
1162         return sprintf(buf, "%d\n", map);
1163 }
1164 static ssize_t set_pwm_temp_map(struct device *dev,
1165                 struct device_attribute *attr, const char *buf, size_t count)
1166 {
1167         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1168         int nr = sensor_attr->index;
1169
1170         struct it87_data *data = dev_get_drvdata(dev);
1171         long val;
1172         u8 reg;
1173
1174         /*
1175          * This check can go away if we ever support automatic fan speed
1176          * control on newer chips.
1177          */
1178         if (!has_old_autopwm(data)) {
1179                 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1180                 return -EINVAL;
1181         }
1182
1183         if (kstrtol(buf, 10, &val) < 0)
1184                 return -EINVAL;
1185
1186         switch (val) {
1187         case (1 << 0):
1188                 reg = 0x00;
1189                 break;
1190         case (1 << 1):
1191                 reg = 0x01;
1192                 break;
1193         case (1 << 2):
1194                 reg = 0x02;
1195                 break;
1196         default:
1197                 return -EINVAL;
1198         }
1199
1200         mutex_lock(&data->update_lock);
1201         data->pwm_temp_map[nr] = reg;
1202         /*
1203          * If we are in automatic mode, write the temp mapping immediately;
1204          * otherwise, just store it for later use.
1205          */
1206         if (data->pwm_ctrl[nr] & 0x80) {
1207                 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1208                 it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]);
1209         }
1210         mutex_unlock(&data->update_lock);
1211         return count;
1212 }
1213
1214 static ssize_t show_auto_pwm(struct device *dev,
1215                 struct device_attribute *attr, char *buf)
1216 {
1217         struct it87_data *data = it87_update_device(dev);
1218         struct sensor_device_attribute_2 *sensor_attr =
1219                         to_sensor_dev_attr_2(attr);
1220         int nr = sensor_attr->nr;
1221         int point = sensor_attr->index;
1222
1223         return sprintf(buf, "%d\n",
1224                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1225 }
1226
1227 static ssize_t set_auto_pwm(struct device *dev,
1228                 struct device_attribute *attr, const char *buf, size_t count)
1229 {
1230         struct it87_data *data = dev_get_drvdata(dev);
1231         struct sensor_device_attribute_2 *sensor_attr =
1232                         to_sensor_dev_attr_2(attr);
1233         int nr = sensor_attr->nr;
1234         int point = sensor_attr->index;
1235         long val;
1236
1237         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1238                 return -EINVAL;
1239
1240         mutex_lock(&data->update_lock);
1241         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1242         it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1243                          data->auto_pwm[nr][point]);
1244         mutex_unlock(&data->update_lock);
1245         return count;
1246 }
1247
1248 static ssize_t show_auto_temp(struct device *dev,
1249                 struct device_attribute *attr, char *buf)
1250 {
1251         struct it87_data *data = it87_update_device(dev);
1252         struct sensor_device_attribute_2 *sensor_attr =
1253                         to_sensor_dev_attr_2(attr);
1254         int nr = sensor_attr->nr;
1255         int point = sensor_attr->index;
1256
1257         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1258 }
1259
1260 static ssize_t set_auto_temp(struct device *dev,
1261                 struct device_attribute *attr, const char *buf, size_t count)
1262 {
1263         struct it87_data *data = dev_get_drvdata(dev);
1264         struct sensor_device_attribute_2 *sensor_attr =
1265                         to_sensor_dev_attr_2(attr);
1266         int nr = sensor_attr->nr;
1267         int point = sensor_attr->index;
1268         long val;
1269
1270         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1271                 return -EINVAL;
1272
1273         mutex_lock(&data->update_lock);
1274         data->auto_temp[nr][point] = TEMP_TO_REG(val);
1275         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1276                          data->auto_temp[nr][point]);
1277         mutex_unlock(&data->update_lock);
1278         return count;
1279 }
1280
1281 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1282 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1283                             0, 1);
1284 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1285                           set_fan_div, 0);
1286
1287 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1288 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1289                             1, 1);
1290 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1291                           set_fan_div, 1);
1292
1293 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1294 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1295                             2, 1);
1296 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1297                           set_fan_div, 2);
1298
1299 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1300 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1301                             3, 1);
1302
1303 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1304 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1305                             4, 1);
1306
1307 static SENSOR_DEVICE_ATTR_2(fan6_input, S_IRUGO, show_fan, NULL, 5, 0);
1308 static SENSOR_DEVICE_ATTR_2(fan6_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1309                             5, 1);
1310
1311 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1312                           show_pwm_enable, set_pwm_enable, 0);
1313 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1314 static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq,
1315                           set_pwm_freq, 0);
1316 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1317                           show_pwm_temp_map, set_pwm_temp_map, 0);
1318 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1319                             show_auto_pwm, set_auto_pwm, 0, 0);
1320 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1321                             show_auto_pwm, set_auto_pwm, 0, 1);
1322 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1323                             show_auto_pwm, set_auto_pwm, 0, 2);
1324 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1325                             show_auto_pwm, NULL, 0, 3);
1326 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1327                             show_auto_temp, set_auto_temp, 0, 1);
1328 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1329                             show_auto_temp, set_auto_temp, 0, 0);
1330 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1331                             show_auto_temp, set_auto_temp, 0, 2);
1332 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1333                             show_auto_temp, set_auto_temp, 0, 3);
1334 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1335                             show_auto_temp, set_auto_temp, 0, 4);
1336
1337 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1338                           show_pwm_enable, set_pwm_enable, 1);
1339 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1340 static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, set_pwm_freq, 1);
1341 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1342                           show_pwm_temp_map, set_pwm_temp_map, 1);
1343 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1344                             show_auto_pwm, set_auto_pwm, 1, 0);
1345 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1346                             show_auto_pwm, set_auto_pwm, 1, 1);
1347 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1348                             show_auto_pwm, set_auto_pwm, 1, 2);
1349 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1350                             show_auto_pwm, NULL, 1, 3);
1351 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1352                             show_auto_temp, set_auto_temp, 1, 1);
1353 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1354                             show_auto_temp, set_auto_temp, 1, 0);
1355 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1356                             show_auto_temp, set_auto_temp, 1, 2);
1357 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1358                             show_auto_temp, set_auto_temp, 1, 3);
1359 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1360                             show_auto_temp, set_auto_temp, 1, 4);
1361
1362 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1363                           show_pwm_enable, set_pwm_enable, 2);
1364 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1365 static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL, 2);
1366 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1367                           show_pwm_temp_map, set_pwm_temp_map, 2);
1368 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1369                             show_auto_pwm, set_auto_pwm, 2, 0);
1370 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1371                             show_auto_pwm, set_auto_pwm, 2, 1);
1372 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1373                             show_auto_pwm, set_auto_pwm, 2, 2);
1374 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1375                             show_auto_pwm, NULL, 2, 3);
1376 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1377                             show_auto_temp, set_auto_temp, 2, 1);
1378 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1379                             show_auto_temp, set_auto_temp, 2, 0);
1380 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1381                             show_auto_temp, set_auto_temp, 2, 2);
1382 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1383                             show_auto_temp, set_auto_temp, 2, 3);
1384 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1385                             show_auto_temp, set_auto_temp, 2, 4);
1386
1387 static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
1388                           show_pwm_enable, set_pwm_enable, 3);
1389 static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 3);
1390 static SENSOR_DEVICE_ATTR(pwm4_freq, S_IRUGO, show_pwm_freq, NULL, 3);
1391 static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO | S_IWUSR,
1392                           show_pwm_temp_map, set_pwm_temp_map, 3);
1393
1394 static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
1395                           show_pwm_enable, set_pwm_enable, 4);
1396 static SENSOR_DEVICE_ATTR(pwm5, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 4);
1397 static SENSOR_DEVICE_ATTR(pwm5_freq, S_IRUGO, show_pwm_freq, NULL, 4);
1398 static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO | S_IWUSR,
1399                           show_pwm_temp_map, set_pwm_temp_map, 4);
1400
1401 static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
1402                           show_pwm_enable, set_pwm_enable, 5);
1403 static SENSOR_DEVICE_ATTR(pwm6, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 5);
1404 static SENSOR_DEVICE_ATTR(pwm6_freq, S_IRUGO, show_pwm_freq, NULL, 5);
1405 static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO | S_IWUSR,
1406                           show_pwm_temp_map, set_pwm_temp_map, 5);
1407
1408 /* Alarms */
1409 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1410                 char *buf)
1411 {
1412         struct it87_data *data = it87_update_device(dev);
1413         return sprintf(buf, "%u\n", data->alarms);
1414 }
1415 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1416
1417 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1418                 char *buf)
1419 {
1420         int bitnr = to_sensor_dev_attr(attr)->index;
1421         struct it87_data *data = it87_update_device(dev);
1422         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1423 }
1424
1425 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1426                 *attr, const char *buf, size_t count)
1427 {
1428         struct it87_data *data = dev_get_drvdata(dev);
1429         long val;
1430         int config;
1431
1432         if (kstrtol(buf, 10, &val) < 0 || val != 0)
1433                 return -EINVAL;
1434
1435         mutex_lock(&data->update_lock);
1436         config = it87_read_value(data, IT87_REG_CONFIG);
1437         if (config < 0) {
1438                 count = config;
1439         } else {
1440                 config |= 1 << 5;
1441                 it87_write_value(data, IT87_REG_CONFIG, config);
1442                 /* Invalidate cache to force re-read */
1443                 data->valid = 0;
1444         }
1445         mutex_unlock(&data->update_lock);
1446
1447         return count;
1448 }
1449
1450 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1451 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1452 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1453 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1454 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1455 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1456 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1457 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1458 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1459 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1460 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1461 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1462 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1463 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 7);
1464 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1465 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1466 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1467 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1468                           show_alarm, clear_intrusion, 4);
1469
1470 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1471                 char *buf)
1472 {
1473         int bitnr = to_sensor_dev_attr(attr)->index;
1474         struct it87_data *data = it87_update_device(dev);
1475         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1476 }
1477 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1478                 const char *buf, size_t count)
1479 {
1480         int bitnr = to_sensor_dev_attr(attr)->index;
1481         struct it87_data *data = dev_get_drvdata(dev);
1482         long val;
1483
1484         if (kstrtol(buf, 10, &val) < 0
1485          || (val != 0 && val != 1))
1486                 return -EINVAL;
1487
1488         mutex_lock(&data->update_lock);
1489         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1490         if (val)
1491                 data->beeps |= (1 << bitnr);
1492         else
1493                 data->beeps &= ~(1 << bitnr);
1494         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1495         mutex_unlock(&data->update_lock);
1496         return count;
1497 }
1498
1499 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1500                           show_beep, set_beep, 1);
1501 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1502 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1503 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1504 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1505 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1506 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1507 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1508 /* fanX_beep writability is set later */
1509 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1510 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1511 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1512 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1513 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1514 static SENSOR_DEVICE_ATTR(fan6_beep, S_IRUGO, show_beep, set_beep, 0);
1515 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1516                           show_beep, set_beep, 2);
1517 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1518 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1519
1520 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1521                 char *buf)
1522 {
1523         struct it87_data *data = dev_get_drvdata(dev);
1524         return sprintf(buf, "%u\n", data->vrm);
1525 }
1526 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1527                 const char *buf, size_t count)
1528 {
1529         struct it87_data *data = dev_get_drvdata(dev);
1530         unsigned long val;
1531
1532         if (kstrtoul(buf, 10, &val) < 0)
1533                 return -EINVAL;
1534
1535         data->vrm = val;
1536
1537         return count;
1538 }
1539 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1540
1541 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1542                 char *buf)
1543 {
1544         struct it87_data *data = it87_update_device(dev);
1545         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1546 }
1547 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1548
1549 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1550                 char *buf)
1551 {
1552         static const char * const labels[] = {
1553                 "+5V",
1554                 "5VSB",
1555                 "Vbat",
1556         };
1557         static const char * const labels_it8721[] = {
1558                 "+3.3V",
1559                 "3VSB",
1560                 "Vbat",
1561         };
1562         struct it87_data *data = dev_get_drvdata(dev);
1563         int nr = to_sensor_dev_attr(attr)->index;
1564
1565         return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1566                                                        : labels[nr]);
1567 }
1568 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1569 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1570 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1571 /* AVCC3 */
1572 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 0);
1573
1574 static ssize_t show_name(struct device *dev, struct device_attribute
1575                          *devattr, char *buf)
1576 {
1577         struct it87_data *data = dev_get_drvdata(dev);
1578         return sprintf(buf, "%s\n", data->name);
1579 }
1580 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1581
1582 static struct attribute *it87_attributes_in[10][5] = {
1583 {
1584         &sensor_dev_attr_in0_input.dev_attr.attr,
1585         &sensor_dev_attr_in0_min.dev_attr.attr,
1586         &sensor_dev_attr_in0_max.dev_attr.attr,
1587         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1588         NULL
1589 }, {
1590         &sensor_dev_attr_in1_input.dev_attr.attr,
1591         &sensor_dev_attr_in1_min.dev_attr.attr,
1592         &sensor_dev_attr_in1_max.dev_attr.attr,
1593         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1594         NULL
1595 }, {
1596         &sensor_dev_attr_in2_input.dev_attr.attr,
1597         &sensor_dev_attr_in2_min.dev_attr.attr,
1598         &sensor_dev_attr_in2_max.dev_attr.attr,
1599         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1600         NULL
1601 }, {
1602         &sensor_dev_attr_in3_input.dev_attr.attr,
1603         &sensor_dev_attr_in3_min.dev_attr.attr,
1604         &sensor_dev_attr_in3_max.dev_attr.attr,
1605         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1606         NULL
1607 }, {
1608         &sensor_dev_attr_in4_input.dev_attr.attr,
1609         &sensor_dev_attr_in4_min.dev_attr.attr,
1610         &sensor_dev_attr_in4_max.dev_attr.attr,
1611         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1612         NULL
1613 }, {
1614         &sensor_dev_attr_in5_input.dev_attr.attr,
1615         &sensor_dev_attr_in5_min.dev_attr.attr,
1616         &sensor_dev_attr_in5_max.dev_attr.attr,
1617         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1618         NULL
1619 }, {
1620         &sensor_dev_attr_in6_input.dev_attr.attr,
1621         &sensor_dev_attr_in6_min.dev_attr.attr,
1622         &sensor_dev_attr_in6_max.dev_attr.attr,
1623         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1624         NULL
1625 }, {
1626         &sensor_dev_attr_in7_input.dev_attr.attr,
1627         &sensor_dev_attr_in7_min.dev_attr.attr,
1628         &sensor_dev_attr_in7_max.dev_attr.attr,
1629         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1630         NULL
1631 }, {
1632         &sensor_dev_attr_in8_input.dev_attr.attr,
1633         NULL
1634 }, {
1635         &sensor_dev_attr_in9_input.dev_attr.attr,
1636         NULL
1637 } };
1638
1639 static const struct attribute_group it87_group_in[10] = {
1640         { .attrs = it87_attributes_in[0] },
1641         { .attrs = it87_attributes_in[1] },
1642         { .attrs = it87_attributes_in[2] },
1643         { .attrs = it87_attributes_in[3] },
1644         { .attrs = it87_attributes_in[4] },
1645         { .attrs = it87_attributes_in[5] },
1646         { .attrs = it87_attributes_in[6] },
1647         { .attrs = it87_attributes_in[7] },
1648         { .attrs = it87_attributes_in[8] },
1649         { .attrs = it87_attributes_in[9] },
1650 };
1651
1652 static struct attribute *it87_attributes_temp[3][6] = {
1653 {
1654         &sensor_dev_attr_temp1_input.dev_attr.attr,
1655         &sensor_dev_attr_temp1_max.dev_attr.attr,
1656         &sensor_dev_attr_temp1_min.dev_attr.attr,
1657         &sensor_dev_attr_temp1_type.dev_attr.attr,
1658         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1659         NULL
1660 } , {
1661         &sensor_dev_attr_temp2_input.dev_attr.attr,
1662         &sensor_dev_attr_temp2_max.dev_attr.attr,
1663         &sensor_dev_attr_temp2_min.dev_attr.attr,
1664         &sensor_dev_attr_temp2_type.dev_attr.attr,
1665         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1666         NULL
1667 } , {
1668         &sensor_dev_attr_temp3_input.dev_attr.attr,
1669         &sensor_dev_attr_temp3_max.dev_attr.attr,
1670         &sensor_dev_attr_temp3_min.dev_attr.attr,
1671         &sensor_dev_attr_temp3_type.dev_attr.attr,
1672         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1673         NULL
1674 } };
1675
1676 static const struct attribute_group it87_group_temp[3] = {
1677         { .attrs = it87_attributes_temp[0] },
1678         { .attrs = it87_attributes_temp[1] },
1679         { .attrs = it87_attributes_temp[2] },
1680 };
1681
1682 static struct attribute *it87_attributes_temp_offset[] = {
1683         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1684         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1685         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1686 };
1687
1688 static struct attribute *it87_attributes[] = {
1689         &dev_attr_alarms.attr,
1690         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1691         &dev_attr_name.attr,
1692         NULL
1693 };
1694
1695 static const struct attribute_group it87_group = {
1696         .attrs = it87_attributes,
1697 };
1698
1699 static struct attribute *it87_attributes_in_beep[] = {
1700         &sensor_dev_attr_in0_beep.dev_attr.attr,
1701         &sensor_dev_attr_in1_beep.dev_attr.attr,
1702         &sensor_dev_attr_in2_beep.dev_attr.attr,
1703         &sensor_dev_attr_in3_beep.dev_attr.attr,
1704         &sensor_dev_attr_in4_beep.dev_attr.attr,
1705         &sensor_dev_attr_in5_beep.dev_attr.attr,
1706         &sensor_dev_attr_in6_beep.dev_attr.attr,
1707         &sensor_dev_attr_in7_beep.dev_attr.attr,
1708         NULL,
1709         NULL,
1710 };
1711
1712 static struct attribute *it87_attributes_temp_beep[] = {
1713         &sensor_dev_attr_temp1_beep.dev_attr.attr,
1714         &sensor_dev_attr_temp2_beep.dev_attr.attr,
1715         &sensor_dev_attr_temp3_beep.dev_attr.attr,
1716 };
1717
1718 static struct attribute *it87_attributes_fan[6][3+1] = { {
1719         &sensor_dev_attr_fan1_input.dev_attr.attr,
1720         &sensor_dev_attr_fan1_min.dev_attr.attr,
1721         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1722         NULL
1723 }, {
1724         &sensor_dev_attr_fan2_input.dev_attr.attr,
1725         &sensor_dev_attr_fan2_min.dev_attr.attr,
1726         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1727         NULL
1728 }, {
1729         &sensor_dev_attr_fan3_input.dev_attr.attr,
1730         &sensor_dev_attr_fan3_min.dev_attr.attr,
1731         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1732         NULL
1733 }, {
1734         &sensor_dev_attr_fan4_input.dev_attr.attr,
1735         &sensor_dev_attr_fan4_min.dev_attr.attr,
1736         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1737         NULL
1738 }, {
1739         &sensor_dev_attr_fan5_input.dev_attr.attr,
1740         &sensor_dev_attr_fan5_min.dev_attr.attr,
1741         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1742         NULL
1743 }, {
1744         &sensor_dev_attr_fan6_input.dev_attr.attr,
1745         &sensor_dev_attr_fan6_min.dev_attr.attr,
1746         &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1747         NULL
1748 } };
1749
1750 static const struct attribute_group it87_group_fan[6] = {
1751         { .attrs = it87_attributes_fan[0] },
1752         { .attrs = it87_attributes_fan[1] },
1753         { .attrs = it87_attributes_fan[2] },
1754         { .attrs = it87_attributes_fan[3] },
1755         { .attrs = it87_attributes_fan[4] },
1756         { .attrs = it87_attributes_fan[5] },
1757 };
1758
1759 static const struct attribute *it87_attributes_fan_div[] = {
1760         &sensor_dev_attr_fan1_div.dev_attr.attr,
1761         &sensor_dev_attr_fan2_div.dev_attr.attr,
1762         &sensor_dev_attr_fan3_div.dev_attr.attr,
1763 };
1764
1765 static struct attribute *it87_attributes_pwm[6][4+1] = { {
1766         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1767         &sensor_dev_attr_pwm1.dev_attr.attr,
1768         &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1769         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1770         NULL
1771 }, {
1772         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1773         &sensor_dev_attr_pwm2.dev_attr.attr,
1774         &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1775         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1776         NULL
1777 }, {
1778         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1779         &sensor_dev_attr_pwm3.dev_attr.attr,
1780         &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1781         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1782         NULL
1783 }, {
1784         &sensor_dev_attr_pwm4_enable.dev_attr.attr,
1785         &sensor_dev_attr_pwm4.dev_attr.attr,
1786         &sensor_dev_attr_pwm4_freq.dev_attr.attr,
1787         &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
1788         NULL
1789 }, {
1790         &sensor_dev_attr_pwm5_enable.dev_attr.attr,
1791         &sensor_dev_attr_pwm5.dev_attr.attr,
1792         &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1793         &sensor_dev_attr_pwm5_auto_channels_temp.dev_attr.attr,
1794         NULL
1795 }, {
1796         &sensor_dev_attr_pwm6_enable.dev_attr.attr,
1797         &sensor_dev_attr_pwm6.dev_attr.attr,
1798         &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1799         &sensor_dev_attr_pwm6_auto_channels_temp.dev_attr.attr,
1800         NULL
1801 } };
1802
1803 static umode_t pwm_attribute_mode(struct kobject *kobj, struct attribute *attr,
1804                                   int index)
1805 {
1806         struct device *dev = container_of(kobj, struct device, kobj);
1807         struct it87_data *data = dev_get_drvdata(dev);
1808
1809         if (has_pwm_freq2(data) && index == 2)
1810                 return attr->mode | S_IWUSR;
1811
1812         return attr->mode;
1813 }
1814
1815 static const struct attribute_group it87_group_pwm[6] = {
1816         { .attrs = it87_attributes_pwm[0] },
1817         { .attrs = it87_attributes_pwm[1],
1818           .is_visible = pwm_attribute_mode, },
1819         { .attrs = it87_attributes_pwm[2] },
1820         { .attrs = it87_attributes_pwm[3] },
1821         { .attrs = it87_attributes_pwm[4] },
1822         { .attrs = it87_attributes_pwm[5] },
1823 };
1824
1825 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1826         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1827         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1828         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1829         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1830         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1831         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1832         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1833         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1834         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1835         NULL
1836 }, {
1837         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1838         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1839         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1840         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1841         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1842         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1843         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1844         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1845         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1846         NULL
1847 }, {
1848         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1849         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1850         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1851         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1852         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1853         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1854         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1855         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1856         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1857         NULL
1858 } };
1859
1860 static const struct attribute_group it87_group_autopwm[3] = {
1861         { .attrs = it87_attributes_autopwm[0] },
1862         { .attrs = it87_attributes_autopwm[1] },
1863         { .attrs = it87_attributes_autopwm[2] },
1864 };
1865
1866 static struct attribute *it87_attributes_fan_beep[] = {
1867         &sensor_dev_attr_fan1_beep.dev_attr.attr,
1868         &sensor_dev_attr_fan2_beep.dev_attr.attr,
1869         &sensor_dev_attr_fan3_beep.dev_attr.attr,
1870         &sensor_dev_attr_fan4_beep.dev_attr.attr,
1871         &sensor_dev_attr_fan5_beep.dev_attr.attr,
1872         &sensor_dev_attr_fan6_beep.dev_attr.attr,
1873 };
1874
1875 static struct attribute *it87_attributes_vid[] = {
1876         &dev_attr_vrm.attr,
1877         &dev_attr_cpu0_vid.attr,
1878         NULL
1879 };
1880
1881 static const struct attribute_group it87_group_vid = {
1882         .attrs = it87_attributes_vid,
1883 };
1884
1885 static struct attribute *it87_attributes_label[] = {
1886         &sensor_dev_attr_in3_label.dev_attr.attr,
1887         &sensor_dev_attr_in7_label.dev_attr.attr,
1888         &sensor_dev_attr_in8_label.dev_attr.attr,
1889         &sensor_dev_attr_in9_label.dev_attr.attr,
1890         NULL
1891 };
1892
1893 static const struct attribute_group it87_group_label = {
1894         .attrs = it87_attributes_label,
1895 };
1896
1897 /* SuperIO detection - will change isa_address if a chip is found */
1898 static int __init it87_find(unsigned short *address,
1899         struct it87_sio_data *sio_data)
1900 {
1901         int err;
1902         u16 chip_type;
1903         const char *board_vendor, *board_name;
1904
1905         err = superio_enter();
1906         if (err)
1907                 return err;
1908
1909         err = -ENODEV;
1910         chip_type = force_id ? force_id : superio_inw(DEVID);
1911
1912         switch (chip_type) {
1913         case IT8705F_DEVID:
1914                 sio_data->type = it87;
1915                 break;
1916         case IT8712F_DEVID:
1917                 sio_data->type = it8712;
1918                 break;
1919         case IT8716F_DEVID:
1920         case IT8726F_DEVID:
1921                 sio_data->type = it8716;
1922                 break;
1923         case IT8718F_DEVID:
1924                 sio_data->type = it8718;
1925                 break;
1926         case IT8720F_DEVID:
1927                 sio_data->type = it8720;
1928                 break;
1929         case IT8721F_DEVID:
1930                 sio_data->type = it8721;
1931                 break;
1932         case IT8728F_DEVID:
1933                 sio_data->type = it8728;
1934                 break;
1935         case IT8771E_DEVID:
1936                 sio_data->type = it8771;
1937                 break;
1938         case IT8772E_DEVID:
1939                 sio_data->type = it8772;
1940                 break;
1941         case IT8781F_DEVID:
1942                 sio_data->type = it8781;
1943                 break;
1944         case IT8782F_DEVID:
1945                 sio_data->type = it8782;
1946                 break;
1947         case IT8783E_DEVID:
1948                 sio_data->type = it8783;
1949                 break;
1950         case IT8786E_DEVID:
1951                 sio_data->type = it8786;
1952                 break;
1953         case IT8603E_DEVID:
1954         case IT8623E_DEVID:
1955                 sio_data->type = it8603;
1956                 break;
1957         case IT8620E_DEVID:
1958                 sio_data->type = it8620;
1959                 break;
1960         case IT8790E_DEVID:
1961                 sio_data->type = it8790;
1962                 break;
1963         case 0xffff:    /* No device at all */
1964                 goto exit;
1965         default:
1966                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1967                 goto exit;
1968         }
1969
1970         superio_select(PME);
1971         if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1972                 pr_info("Device not activated, skipping\n");
1973                 goto exit;
1974         }
1975
1976         *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1977         if (*address == 0) {
1978                 pr_info("Base address not set, skipping\n");
1979                 goto exit;
1980         }
1981
1982         err = 0;
1983         sio_data->revision = superio_inb(DEVREV) & 0x0f;
1984         pr_info("Found IT%04x%s chip at 0x%x, revision %d\n", chip_type,
1985                 it87_devices[sio_data->type].suffix,
1986                 *address, sio_data->revision);
1987
1988         /* in8 (Vbat) is always internal */
1989         sio_data->internal = (1 << 2);
1990
1991         /* in7 (VSB or VCCH5V) is always internal on some chips */
1992         if (it87_devices[sio_data->type].features & FEAT_IN7_INTERNAL)
1993                 sio_data->internal |= (1 << 1);
1994
1995         /* in9 (AVCC3), always internal if supported */
1996         if (it87_devices[sio_data->type].features & FEAT_AVCC3)
1997                 sio_data->internal |= (1 << 3); /* in9 is AVCC */
1998         else
1999                 sio_data->skip_in |= (1 << 9);
2000
2001         if (!(it87_devices[sio_data->type].features & FEAT_SIX_PWM))
2002                 sio_data->skip_pwm |= (1 << 3) | (1 << 4) | (1 << 5);
2003
2004         if (!(it87_devices[sio_data->type].features & FEAT_VID))
2005                 sio_data->skip_vid = 1;
2006
2007         /* Read GPIO config and VID value from LDN 7 (GPIO) */
2008         if (sio_data->type == it87) {
2009                 /* The IT8705F has a different LD number for GPIO */
2010                 superio_select(5);
2011                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
2012         } else if (sio_data->type == it8783) {
2013                 int reg25, reg27, reg2a, reg2c, regef;
2014
2015                 superio_select(GPIO);
2016
2017                 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
2018                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
2019                 reg2a = superio_inb(IT87_SIO_PINX1_REG);
2020                 reg2c = superio_inb(IT87_SIO_PINX2_REG);
2021                 regef = superio_inb(IT87_SIO_SPI_REG);
2022
2023                 /* Check if fan3 is there or not */
2024                 if ((reg27 & (1 << 0)) || !(reg2c & (1 << 2)))
2025                         sio_data->skip_fan |= (1 << 2);
2026                 if ((reg25 & (1 << 4))
2027                     || (!(reg2a & (1 << 1)) && (regef & (1 << 0))))
2028                         sio_data->skip_pwm |= (1 << 2);
2029
2030                 /* Check if fan2 is there or not */
2031                 if (reg27 & (1 << 7))
2032                         sio_data->skip_fan |= (1 << 1);
2033                 if (reg27 & (1 << 3))
2034                         sio_data->skip_pwm |= (1 << 1);
2035
2036                 /* VIN5 */
2037                 if ((reg27 & (1 << 0)) || (reg2c & (1 << 2)))
2038                         sio_data->skip_in |= (1 << 5); /* No VIN5 */
2039
2040                 /* VIN6 */
2041                 if (reg27 & (1 << 1))
2042                         sio_data->skip_in |= (1 << 6); /* No VIN6 */
2043
2044                 /*
2045                  * VIN7
2046                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
2047                  */
2048                 if (reg27 & (1 << 2)) {
2049                         /*
2050                          * The data sheet is a bit unclear regarding the
2051                          * internal voltage divider for VCCH5V. It says
2052                          * "This bit enables and switches VIN7 (pin 91) to the
2053                          * internal voltage divider for VCCH5V".
2054                          * This is different to other chips, where the internal
2055                          * voltage divider would connect VIN7 to an internal
2056                          * voltage source. Maybe that is the case here as well.
2057                          *
2058                          * Since we don't know for sure, re-route it if that is
2059                          * not the case, and ask the user to report if the
2060                          * resulting voltage is sane.
2061                          */
2062                         if (!(reg2c & (1 << 1))) {
2063                                 reg2c |= (1 << 1);
2064                                 superio_outb(IT87_SIO_PINX2_REG, reg2c);
2065                                 pr_notice("Routing internal VCCH5V to in7.\n");
2066                         }
2067                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
2068                         pr_notice("Please report if it displays a reasonable voltage.\n");
2069                 }
2070
2071                 if (reg2c & (1 << 0))
2072                         sio_data->internal |= (1 << 0);
2073                 if (reg2c & (1 << 1))
2074                         sio_data->internal |= (1 << 1);
2075
2076                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
2077         } else if (sio_data->type == it8603) {
2078                 int reg27, reg29;
2079
2080                 superio_select(GPIO);
2081
2082                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
2083
2084                 /* Check if fan3 is there or not */
2085                 if (reg27 & (1 << 6))
2086                         sio_data->skip_pwm |= (1 << 2);
2087                 if (reg27 & (1 << 7))
2088                         sio_data->skip_fan |= (1 << 2);
2089
2090                 /* Check if fan2 is there or not */
2091                 reg29 = superio_inb(IT87_SIO_GPIO5_REG);
2092                 if (reg29 & (1 << 1))
2093                         sio_data->skip_pwm |= (1 << 1);
2094                 if (reg29 & (1 << 2))
2095                         sio_data->skip_fan |= (1 << 1);
2096
2097                 sio_data->skip_in |= (1 << 5); /* No VIN5 */
2098                 sio_data->skip_in |= (1 << 6); /* No VIN6 */
2099
2100                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
2101         } else if (sio_data->type == it8620) {
2102                 int reg;
2103
2104                 superio_select(GPIO);
2105
2106                 /* Check for pwm5 */
2107                 reg = superio_inb(IT87_SIO_GPIO1_REG);
2108                 if (reg & (1 << 6))
2109                         sio_data->skip_pwm |= (1 << 4);
2110
2111                 /* Check for fan4, fan5 */
2112                 reg = superio_inb(IT87_SIO_GPIO2_REG);
2113                 if (!(reg & (1 << 5)))
2114                         sio_data->skip_fan |= (1 << 3);
2115                 if (!(reg & (1 << 4)))
2116                         sio_data->skip_fan |= (1 << 4);
2117
2118                 /* Check for pwm3, fan3 */
2119                 reg = superio_inb(IT87_SIO_GPIO3_REG);
2120                 if (reg & (1 << 6))
2121                         sio_data->skip_pwm |= (1 << 2);
2122                 if (reg & (1 << 7))
2123                         sio_data->skip_fan |= (1 << 2);
2124
2125                 /* Check for pwm4 */
2126                 reg = superio_inb(IT87_SIO_GPIO4_REG);
2127                 if (!(reg & (1 << 4)))
2128                         sio_data->skip_pwm |= (1 << 3);
2129
2130                 /* Check for pwm2, fan2 */
2131                 reg = superio_inb(IT87_SIO_GPIO5_REG);
2132                 if (reg & (1 << 1))
2133                         sio_data->skip_pwm |= (1 << 1);
2134                 if (reg & (1 << 2))
2135                         sio_data->skip_fan |= (1 << 1);
2136                 /* Check for pwm6, fan6 */
2137                 if (!(reg & (1 << 7))) {
2138                         sio_data->skip_pwm |= (1 << 5);
2139                         sio_data->skip_fan |= (1 << 5);
2140                 }
2141
2142                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
2143         } else {
2144                 int reg;
2145                 bool uart6;
2146
2147                 superio_select(GPIO);
2148
2149                 reg = superio_inb(IT87_SIO_GPIO3_REG);
2150                 if (!sio_data->skip_vid) {
2151                         /* We need at least 4 VID pins */
2152                         if (reg & 0x0f) {
2153                                 pr_info("VID is disabled (pins used for GPIO)\n");
2154                                 sio_data->skip_vid = 1;
2155                         }
2156                 }
2157
2158                 /* Check if fan3 is there or not */
2159                 if (reg & (1 << 6))
2160                         sio_data->skip_pwm |= (1 << 2);
2161                 if (reg & (1 << 7))
2162                         sio_data->skip_fan |= (1 << 2);
2163
2164                 /* Check if fan2 is there or not */
2165                 reg = superio_inb(IT87_SIO_GPIO5_REG);
2166                 if (reg & (1 << 1))
2167                         sio_data->skip_pwm |= (1 << 1);
2168                 if (reg & (1 << 2))
2169                         sio_data->skip_fan |= (1 << 1);
2170
2171                 if ((sio_data->type == it8718 || sio_data->type == it8720)
2172                  && !(sio_data->skip_vid))
2173                         sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
2174
2175                 reg = superio_inb(IT87_SIO_PINX2_REG);
2176
2177                 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
2178
2179                 /*
2180                  * The IT8720F has no VIN7 pin, so VCCH should always be
2181                  * routed internally to VIN7 with an internal divider.
2182                  * Curiously, there still is a configuration bit to control
2183                  * this, which means it can be set incorrectly. And even
2184                  * more curiously, many boards out there are improperly
2185                  * configured, even though the IT8720F datasheet claims
2186                  * that the internal routing of VCCH to VIN7 is the default
2187                  * setting. So we force the internal routing in this case.
2188                  *
2189                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
2190                  * If UART6 is enabled, re-route VIN7 to the internal divider
2191                  * if that is not already the case.
2192                  */
2193                 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
2194                         reg |= (1 << 1);
2195                         superio_outb(IT87_SIO_PINX2_REG, reg);
2196                         pr_notice("Routing internal VCCH to in7\n");
2197                 }
2198                 if (reg & (1 << 0))
2199                         sio_data->internal |= (1 << 0);
2200                 if (reg & (1 << 1))
2201                         sio_data->internal |= (1 << 1);
2202
2203                 /*
2204                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
2205                  * While VIN7 can be routed to the internal voltage divider,
2206                  * VIN5 and VIN6 are not available if UART6 is enabled.
2207                  *
2208                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
2209                  * is the temperature source. Since we can not read the
2210                  * temperature source here, skip_temp is preliminary.
2211                  */
2212                 if (uart6) {
2213                         sio_data->skip_in |= (1 << 5) | (1 << 6);
2214                         sio_data->skip_temp |= (1 << 2);
2215                 }
2216
2217                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
2218         }
2219         if (sio_data->beep_pin)
2220                 pr_info("Beeping is supported\n");
2221
2222         /* Disable specific features based on DMI strings */
2223         board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
2224         board_name = dmi_get_system_info(DMI_BOARD_NAME);
2225         if (board_vendor && board_name) {
2226                 if (strcmp(board_vendor, "nVIDIA") == 0
2227                  && strcmp(board_name, "FN68PT") == 0) {
2228                         /*
2229                          * On the Shuttle SN68PT, FAN_CTL2 is apparently not
2230                          * connected to a fan, but to something else. One user
2231                          * has reported instant system power-off when changing
2232                          * the PWM2 duty cycle, so we disable it.
2233                          * I use the board name string as the trigger in case
2234                          * the same board is ever used in other systems.
2235                          */
2236                         pr_info("Disabling pwm2 due to hardware constraints\n");
2237                         sio_data->skip_pwm = (1 << 1);
2238                 }
2239         }
2240
2241 exit:
2242         superio_exit();
2243         return err;
2244 }
2245
2246 static void it87_remove_files(struct device *dev)
2247 {
2248         struct it87_data *data = platform_get_drvdata(pdev);
2249         struct it87_sio_data *sio_data = dev_get_platdata(dev);
2250         int i;
2251
2252         sysfs_remove_group(&dev->kobj, &it87_group);
2253         for (i = 0; i < 10; i++) {
2254                 if (sio_data->skip_in & (1 << i))
2255                         continue;
2256                 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
2257                 if (it87_attributes_in_beep[i])
2258                         sysfs_remove_file(&dev->kobj,
2259                                           it87_attributes_in_beep[i]);
2260         }
2261         for (i = 0; i < 3; i++) {
2262                 if (!(data->has_temp & (1 << i)))
2263                         continue;
2264                 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
2265                 if (has_temp_offset(data))
2266                         sysfs_remove_file(&dev->kobj,
2267                                           it87_attributes_temp_offset[i]);
2268                 if (sio_data->beep_pin)
2269                         sysfs_remove_file(&dev->kobj,
2270                                           it87_attributes_temp_beep[i]);
2271         }
2272         for (i = 0; i < 6; i++) {
2273                 if (!(data->has_fan & (1 << i)))
2274                         continue;
2275                 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
2276                 if (sio_data->beep_pin)
2277                         sysfs_remove_file(&dev->kobj,
2278                                           it87_attributes_fan_beep[i]);
2279                 if (i < 3 && !has_16bit_fans(data))
2280                         sysfs_remove_file(&dev->kobj,
2281                                           it87_attributes_fan_div[i]);
2282         }
2283         for (i = 0; i < 6; i++) {
2284                 if (sio_data->skip_pwm & (1 << i))
2285                         continue;
2286                 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
2287                 if (has_old_autopwm(data))
2288                         sysfs_remove_group(&dev->kobj,
2289                                            &it87_group_autopwm[i]);
2290         }
2291         if (!sio_data->skip_vid)
2292                 sysfs_remove_group(&dev->kobj, &it87_group_vid);
2293         sysfs_remove_group(&dev->kobj, &it87_group_label);
2294 }
2295
2296 static int it87_probe(struct platform_device *pdev)
2297 {
2298         struct it87_data *data;
2299         struct resource *res;
2300         struct device *dev = &pdev->dev;
2301         struct it87_sio_data *sio_data = dev_get_platdata(dev);
2302         int err = 0, i;
2303         int enable_pwm_interface;
2304         int fan_beep_need_rw;
2305
2306         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2307         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
2308                                  DRVNAME)) {
2309                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2310                         (unsigned long)res->start,
2311                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
2312                 return -EBUSY;
2313         }
2314
2315         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2316         if (!data)
2317                 return -ENOMEM;
2318
2319         data->addr = res->start;
2320         data->type = sio_data->type;
2321         data->features = it87_devices[sio_data->type].features;
2322         data->peci_mask = it87_devices[sio_data->type].peci_mask;
2323         data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
2324         data->name = it87_devices[sio_data->type].name;
2325         /*
2326          * IT8705F Datasheet 0.4.1, 3h == Version G.
2327          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
2328          * These are the first revisions with 16-bit tachometer support.
2329          */
2330         switch (data->type) {
2331         case it87:
2332                 if (sio_data->revision >= 0x03) {
2333                         data->features &= ~FEAT_OLD_AUTOPWM;
2334                         data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS;
2335                 }
2336                 break;
2337         case it8712:
2338                 if (sio_data->revision >= 0x08) {
2339                         data->features &= ~FEAT_OLD_AUTOPWM;
2340                         data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS |
2341                                           FEAT_FIVE_FANS;
2342                 }
2343                 break;
2344         default:
2345                 break;
2346         }
2347
2348         /* Now, we do the remaining detection. */
2349         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2350          || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2351                 return -ENODEV;
2352
2353         platform_set_drvdata(pdev, data);
2354
2355         mutex_init(&data->update_lock);
2356
2357         /* Check PWM configuration */
2358         enable_pwm_interface = it87_check_pwm(dev);
2359
2360         /* Starting with IT8721F, we handle scaling of internal voltages */
2361         if (has_12mv_adc(data)) {
2362                 if (sio_data->internal & (1 << 0))
2363                         data->in_scaled |= (1 << 3);    /* in3 is AVCC */
2364                 if (sio_data->internal & (1 << 1))
2365                         data->in_scaled |= (1 << 7);    /* in7 is VSB */
2366                 if (sio_data->internal & (1 << 2))
2367                         data->in_scaled |= (1 << 8);    /* in8 is Vbat */
2368                 if (sio_data->internal & (1 << 3))
2369                         data->in_scaled |= (1 << 9);    /* in9 is AVCC */
2370         } else if (sio_data->type == it8781 || sio_data->type == it8782 ||
2371                    sio_data->type == it8783) {
2372                 if (sio_data->internal & (1 << 0))
2373                         data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
2374                 if (sio_data->internal & (1 << 1))
2375                         data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
2376         }
2377
2378         data->has_temp = 0x07;
2379         if (sio_data->skip_temp & (1 << 2)) {
2380                 if (sio_data->type == it8782
2381                     && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2382                         data->has_temp &= ~(1 << 2);
2383         }
2384
2385         /* Initialize the IT87 chip */
2386         it87_init_device(pdev);
2387
2388         /* Register sysfs hooks */
2389         err = sysfs_create_group(&dev->kobj, &it87_group);
2390         if (err)
2391                 return err;
2392
2393         for (i = 0; i < 10; i++) {
2394                 if (sio_data->skip_in & (1 << i))
2395                         continue;
2396                 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2397                 if (err)
2398                         goto error;
2399                 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2400                         err = sysfs_create_file(&dev->kobj,
2401                                                 it87_attributes_in_beep[i]);
2402                         if (err)
2403                                 goto error;
2404                 }
2405         }
2406
2407         for (i = 0; i < 3; i++) {
2408                 if (!(data->has_temp & (1 << i)))
2409                         continue;
2410                 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2411                 if (err)
2412                         goto error;
2413                 if (has_temp_offset(data)) {
2414                         err = sysfs_create_file(&dev->kobj,
2415                                                 it87_attributes_temp_offset[i]);
2416                         if (err)
2417                                 goto error;
2418                 }
2419                 if (sio_data->beep_pin) {
2420                         err = sysfs_create_file(&dev->kobj,
2421                                                 it87_attributes_temp_beep[i]);
2422                         if (err)
2423                                 goto error;
2424                 }
2425         }
2426
2427         /* Do not create fan files for disabled fans */
2428         fan_beep_need_rw = 1;
2429         for (i = 0; i < 6; i++) {
2430                 if (!(data->has_fan & (1 << i)))
2431                         continue;
2432                 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2433                 if (err)
2434                         goto error;
2435
2436                 if (i < 3 && !has_16bit_fans(data)) {
2437                         err = sysfs_create_file(&dev->kobj,
2438                                                 it87_attributes_fan_div[i]);
2439                         if (err)
2440                                 goto error;
2441                 }
2442
2443                 if (sio_data->beep_pin) {
2444                         err = sysfs_create_file(&dev->kobj,
2445                                                 it87_attributes_fan_beep[i]);
2446                         if (err)
2447                                 goto error;
2448                         if (!fan_beep_need_rw)
2449                                 continue;
2450
2451                         /*
2452                          * As we have a single beep enable bit for all fans,
2453                          * only the first enabled fan has a writable attribute
2454                          * for it.
2455                          */
2456                         if (sysfs_chmod_file(&dev->kobj,
2457                                              it87_attributes_fan_beep[i],
2458                                              S_IRUGO | S_IWUSR))
2459                                 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2460                                         i + 1);
2461                         fan_beep_need_rw = 0;
2462                 }
2463         }
2464
2465         if (enable_pwm_interface) {
2466                 for (i = 0; i < 6; i++) {
2467                         if (sio_data->skip_pwm & (1 << i))
2468                                 continue;
2469                         err = sysfs_create_group(&dev->kobj,
2470                                                  &it87_group_pwm[i]);
2471                         if (err)
2472                                 goto error;
2473
2474                         if (!has_old_autopwm(data))
2475                                 continue;
2476                         err = sysfs_create_group(&dev->kobj,
2477                                                  &it87_group_autopwm[i]);
2478                         if (err)
2479                                 goto error;
2480                 }
2481         }
2482
2483         if (!sio_data->skip_vid) {
2484                 data->vrm = vid_which_vrm();
2485                 /* VID reading from Super-I/O config space if available */
2486                 data->vid = sio_data->vid_value;
2487                 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2488                 if (err)
2489                         goto error;
2490         }
2491
2492         /* Export labels for internal sensors */
2493         for (i = 0; i < 4; i++) {
2494                 if (!(sio_data->internal & (1 << i)))
2495                         continue;
2496                 err = sysfs_create_file(&dev->kobj,
2497                                         it87_attributes_label[i]);
2498                 if (err)
2499                         goto error;
2500         }
2501
2502         data->hwmon_dev = hwmon_device_register(dev);
2503         if (IS_ERR(data->hwmon_dev)) {
2504                 err = PTR_ERR(data->hwmon_dev);
2505                 goto error;
2506         }
2507
2508         return 0;
2509
2510 error:
2511         it87_remove_files(dev);
2512         return err;
2513 }
2514
2515 static int it87_remove(struct platform_device *pdev)
2516 {
2517         struct it87_data *data = platform_get_drvdata(pdev);
2518
2519         hwmon_device_unregister(data->hwmon_dev);
2520         it87_remove_files(&pdev->dev);
2521
2522         return 0;
2523 }
2524
2525 /*
2526  * Must be called with data->update_lock held, except during initialization.
2527  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2528  * would slow down the IT87 access and should not be necessary.
2529  */
2530 static int it87_read_value(struct it87_data *data, u8 reg)
2531 {
2532         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2533         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2534 }
2535
2536 /*
2537  * Must be called with data->update_lock held, except during initialization.
2538  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2539  * would slow down the IT87 access and should not be necessary.
2540  */
2541 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2542 {
2543         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2544         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2545 }
2546
2547 /* Return 1 if and only if the PWM interface is safe to use */
2548 static int it87_check_pwm(struct device *dev)
2549 {
2550         struct it87_data *data = dev_get_drvdata(dev);
2551         /*
2552          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2553          * and polarity set to active low is sign that this is the case so we
2554          * disable pwm control to protect the user.
2555          */
2556         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2557         if ((tmp & 0x87) == 0) {
2558                 if (fix_pwm_polarity) {
2559                         /*
2560                          * The user asks us to attempt a chip reconfiguration.
2561                          * This means switching to active high polarity and
2562                          * inverting all fan speed values.
2563                          */
2564                         int i;
2565                         u8 pwm[3];
2566
2567                         for (i = 0; i < 3; i++)
2568                                 pwm[i] = it87_read_value(data,
2569                                                          IT87_REG_PWM[i]);
2570
2571                         /*
2572                          * If any fan is in automatic pwm mode, the polarity
2573                          * might be correct, as suspicious as it seems, so we
2574                          * better don't change anything (but still disable the
2575                          * PWM interface).
2576                          */
2577                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2578                                 dev_info(dev,
2579                                          "Reconfiguring PWM to active high polarity\n");
2580                                 it87_write_value(data, IT87_REG_FAN_CTL,
2581                                                  tmp | 0x87);
2582                                 for (i = 0; i < 3; i++)
2583                                         it87_write_value(data,
2584                                                          IT87_REG_PWM[i],
2585                                                          0x7f & ~pwm[i]);
2586                                 return 1;
2587                         }
2588
2589                         dev_info(dev,
2590                                  "PWM configuration is too broken to be fixed\n");
2591                 }
2592
2593                 dev_info(dev,
2594                          "Detected broken BIOS defaults, disabling PWM interface\n");
2595                 return 0;
2596         } else if (fix_pwm_polarity) {
2597                 dev_info(dev,
2598                          "PWM configuration looks sane, won't touch\n");
2599         }
2600
2601         return 1;
2602 }
2603
2604 /* Called when we have found a new IT87. */
2605 static void it87_init_device(struct platform_device *pdev)
2606 {
2607         struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
2608         struct it87_data *data = platform_get_drvdata(pdev);
2609         int tmp, i;
2610         u8 mask;
2611
2612         /*
2613          * For each PWM channel:
2614          * - If it is in automatic mode, setting to manual mode should set
2615          *   the fan to full speed by default.
2616          * - If it is in manual mode, we need a mapping to temperature
2617          *   channels to use when later setting to automatic mode later.
2618          *   Use a 1:1 mapping by default (we are clueless.)
2619          * In both cases, the value can (and should) be changed by the user
2620          * prior to switching to a different mode.
2621          * Note that this is no longer needed for the IT8721F and later, as
2622          * these have separate registers for the temperature mapping and the
2623          * manual duty cycle.
2624          */
2625         for (i = 0; i < 3; i++) {
2626                 data->pwm_temp_map[i] = i;
2627                 data->pwm_duty[i] = 0x7f;       /* Full speed */
2628                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2629         }
2630
2631         /*
2632          * Some chips seem to have default value 0xff for all limit
2633          * registers. For low voltage limits it makes no sense and triggers
2634          * alarms, so change to 0 instead. For high temperature limits, it
2635          * means -1 degree C, which surprisingly doesn't trigger an alarm,
2636          * but is still confusing, so change to 127 degrees C.
2637          */
2638         for (i = 0; i < 8; i++) {
2639                 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2640                 if (tmp == 0xff)
2641                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2642         }
2643         for (i = 0; i < 3; i++) {
2644                 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2645                 if (tmp == 0xff)
2646                         it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2647         }
2648
2649         /*
2650          * Temperature channels are not forcibly enabled, as they can be
2651          * set to two different sensor types and we can't guess which one
2652          * is correct for a given system. These channels can be enabled at
2653          * run-time through the temp{1-3}_type sysfs accessors if needed.
2654          */
2655
2656         /* Check if voltage monitors are reset manually or by some reason */
2657         tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2658         if ((tmp & 0xff) == 0) {
2659                 /* Enable all voltage monitors */
2660                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2661         }
2662
2663         /* Check if tachometers are reset manually or by some reason */
2664         mask = 0x70 & ~(sio_data->skip_fan << 4);
2665         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2666         if ((data->fan_main_ctrl & mask) == 0) {
2667                 /* Enable all fan tachometers */
2668                 data->fan_main_ctrl |= mask;
2669                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2670                                  data->fan_main_ctrl);
2671         }
2672         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2673
2674         tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2675
2676         /* Set tachometers to 16-bit mode if needed */
2677         if (has_fan16_config(data)) {
2678                 if (~tmp & 0x07 & data->has_fan) {
2679                         dev_dbg(&pdev->dev,
2680                                 "Setting fan1-3 to 16-bit mode\n");
2681                         it87_write_value(data, IT87_REG_FAN_16BIT,
2682                                          tmp | 0x07);
2683                 }
2684         }
2685
2686         /* Check for additional fans */
2687         if (has_five_fans(data)) {
2688                 if (tmp & (1 << 4))
2689                         data->has_fan |= (1 << 3); /* fan4 enabled */
2690                 if (tmp & (1 << 5))
2691                         data->has_fan |= (1 << 4); /* fan5 enabled */
2692         }
2693
2694         if (has_six_fans(data)) {
2695                 if (tmp & (1 << 2))
2696                         data->has_fan |= (1 << 5); /* fan6 enabled */
2697         }
2698
2699         /* Fan input pins may be used for alternative functions */
2700         data->has_fan &= ~sio_data->skip_fan;
2701
2702         /* Check if pwm5, pwm6 are enabled */
2703         if (has_six_pwm(data)) {
2704                 /* The following code may be IT8620E specific */
2705                 tmp = it87_read_value(data, IT87_REG_FAN_DIV);
2706                 if ((tmp & 0xc0) == 0xc0)
2707                         sio_data->skip_pwm |= (1 << 4);
2708                 if (!(tmp & (1 << 3)))
2709                         sio_data->skip_pwm |= (1 << 5);
2710         }
2711
2712         /* Start monitoring */
2713         it87_write_value(data, IT87_REG_CONFIG,
2714                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2715                          | (update_vbat ? 0x41 : 0x01));
2716 }
2717
2718 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2719 {
2720         data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM[nr]);
2721         if (has_newer_autopwm(data)) {
2722                 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2723                 data->pwm_duty[nr] = it87_read_value(data,
2724                                                      IT87_REG_PWM_DUTY[nr]);
2725         } else {
2726                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
2727                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2728                 else                            /* Manual mode */
2729                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2730         }
2731
2732         if (has_old_autopwm(data)) {
2733                 int i;
2734
2735                 for (i = 0; i < 5 ; i++)
2736                         data->auto_temp[nr][i] = it87_read_value(data,
2737                                                 IT87_REG_AUTO_TEMP(nr, i));
2738                 for (i = 0; i < 3 ; i++)
2739                         data->auto_pwm[nr][i] = it87_read_value(data,
2740                                                 IT87_REG_AUTO_PWM(nr, i));
2741         }
2742 }
2743
2744 static struct it87_data *it87_update_device(struct device *dev)
2745 {
2746         struct it87_data *data = dev_get_drvdata(dev);
2747         int i;
2748
2749         mutex_lock(&data->update_lock);
2750
2751         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2752             || !data->valid) {
2753                 if (update_vbat) {
2754                         /*
2755                          * Cleared after each update, so reenable.  Value
2756                          * returned by this read will be previous value
2757                          */
2758                         it87_write_value(data, IT87_REG_CONFIG,
2759                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2760                 }
2761                 for (i = 0; i <= 7; i++) {
2762                         data->in[i][0] =
2763                                 it87_read_value(data, IT87_REG_VIN(i));
2764                         data->in[i][1] =
2765                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
2766                         data->in[i][2] =
2767                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
2768                 }
2769                 /* in8 (battery) has no limit registers */
2770                 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2771                 if (has_avcc3(data))
2772                         data->in[9][0] = it87_read_value(data, IT87_REG_AVCC3);
2773
2774                 for (i = 0; i < 6; i++) {
2775                         /* Skip disabled fans */
2776                         if (!(data->has_fan & (1 << i)))
2777                                 continue;
2778
2779                         data->fan[i][1] =
2780                                 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2781                         data->fan[i][0] = it87_read_value(data,
2782                                        IT87_REG_FAN[i]);
2783                         /* Add high byte if in 16-bit mode */
2784                         if (has_16bit_fans(data)) {
2785                                 data->fan[i][0] |= it87_read_value(data,
2786                                                 IT87_REG_FANX[i]) << 8;
2787                                 data->fan[i][1] |= it87_read_value(data,
2788                                                 IT87_REG_FANX_MIN[i]) << 8;
2789                         }
2790                 }
2791                 for (i = 0; i < 3; i++) {
2792                         if (!(data->has_temp & (1 << i)))
2793                                 continue;
2794                         data->temp[i][0] =
2795                                 it87_read_value(data, IT87_REG_TEMP(i));
2796                         data->temp[i][1] =
2797                                 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2798                         data->temp[i][2] =
2799                                 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2800                         if (has_temp_offset(data))
2801                                 data->temp[i][3] =
2802                                   it87_read_value(data,
2803                                                   IT87_REG_TEMP_OFFSET[i]);
2804                 }
2805
2806                 /* Newer chips don't have clock dividers */
2807                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2808                         i = it87_read_value(data, IT87_REG_FAN_DIV);
2809                         data->fan_div[0] = i & 0x07;
2810                         data->fan_div[1] = (i >> 3) & 0x07;
2811                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
2812                 }
2813
2814                 data->alarms =
2815                         it87_read_value(data, IT87_REG_ALARM1) |
2816                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2817                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
2818                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2819
2820                 data->fan_main_ctrl = it87_read_value(data,
2821                                 IT87_REG_FAN_MAIN_CTRL);
2822                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2823                 for (i = 0; i < 3; i++)
2824                         it87_update_pwm_ctrl(data, i);
2825
2826                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2827                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
2828                 /*
2829                  * The IT8705F does not have VID capability.
2830                  * The IT8718F and later don't use IT87_REG_VID for the
2831                  * same purpose.
2832                  */
2833                 if (data->type == it8712 || data->type == it8716) {
2834                         data->vid = it87_read_value(data, IT87_REG_VID);
2835                         /*
2836                          * The older IT8712F revisions had only 5 VID pins,
2837                          * but we assume it is always safe to read 6 bits.
2838                          */
2839                         data->vid &= 0x3f;
2840                 }
2841                 data->last_updated = jiffies;
2842                 data->valid = 1;
2843         }
2844
2845         mutex_unlock(&data->update_lock);
2846
2847         return data;
2848 }
2849
2850 static int __init it87_device_add(unsigned short address,
2851                                   const struct it87_sio_data *sio_data)
2852 {
2853         struct resource res = {
2854                 .start  = address + IT87_EC_OFFSET,
2855                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2856                 .name   = DRVNAME,
2857                 .flags  = IORESOURCE_IO,
2858         };
2859         int err;
2860
2861         err = acpi_check_resource_conflict(&res);
2862         if (err)
2863                 goto exit;
2864
2865         pdev = platform_device_alloc(DRVNAME, address);
2866         if (!pdev) {
2867                 err = -ENOMEM;
2868                 pr_err("Device allocation failed\n");
2869                 goto exit;
2870         }
2871
2872         err = platform_device_add_resources(pdev, &res, 1);
2873         if (err) {
2874                 pr_err("Device resource addition failed (%d)\n", err);
2875                 goto exit_device_put;
2876         }
2877
2878         err = platform_device_add_data(pdev, sio_data,
2879                                        sizeof(struct it87_sio_data));
2880         if (err) {
2881                 pr_err("Platform data allocation failed\n");
2882                 goto exit_device_put;
2883         }
2884
2885         err = platform_device_add(pdev);
2886         if (err) {
2887                 pr_err("Device addition failed (%d)\n", err);
2888                 goto exit_device_put;
2889         }
2890
2891         return 0;
2892
2893 exit_device_put:
2894         platform_device_put(pdev);
2895 exit:
2896         return err;
2897 }
2898
2899 static int __init sm_it87_init(void)
2900 {
2901         int err;
2902         unsigned short isa_address = 0;
2903         struct it87_sio_data sio_data;
2904
2905         memset(&sio_data, 0, sizeof(struct it87_sio_data));
2906         err = it87_find(&isa_address, &sio_data);
2907         if (err)
2908                 return err;
2909         err = platform_driver_register(&it87_driver);
2910         if (err)
2911                 return err;
2912
2913         err = it87_device_add(isa_address, &sio_data);
2914         if (err) {
2915                 platform_driver_unregister(&it87_driver);
2916                 return err;
2917         }
2918
2919         return 0;
2920 }
2921
2922 static void __exit sm_it87_exit(void)
2923 {
2924         platform_device_unregister(pdev);
2925         platform_driver_unregister(&it87_driver);
2926 }
2927
2928
2929 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
2930 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2931 module_param(update_vbat, bool, 0);
2932 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2933 module_param(fix_pwm_polarity, bool, 0);
2934 MODULE_PARM_DESC(fix_pwm_polarity,
2935                  "Force PWM polarity to active high (DANGEROUS)");
2936 MODULE_LICENSE("GPL");
2937
2938 module_init(sm_it87_init);
2939 module_exit(sm_it87_exit);