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, it8603, it8620, it8790 };
  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_GPIO3_REG      0x27
 168 #define IT87_SIO_GPIO5_REG      0x29
 169 #define IT87_SIO_PINX1_REG      0x2a    /* Pin selection */
 170 #define IT87_SIO_PINX2_REG      0x2c    /* Pin selection */
 171 #define IT87_SIO_SPI_REG        0xef    /* SPI function pin select */
 172 #define IT87_SIO_VID_REG        0xfc    /* VID value */
 173 #define IT87_SIO_BEEP_PIN_REG   0xf6    /* Beep pin mapping */
 174
 175 /* Update battery voltage after every reading if true */
 176 static bool update_vbat;
 177
 178 /* Not all BIOSes properly configure the PWM registers */
 179 static bool fix_pwm_polarity;
 180
 181 /* Many IT87 constants specified below */
 182
 183 /* Length of ISA address segment */
 184 #define IT87_EXTENT 8
 185
 186 /* Length of ISA address segment for Environmental Controller */
 187 #define IT87_EC_EXTENT 2
 188
 189 /* Offset of EC registers from ISA base address */
 190 #define IT87_EC_OFFSET 5
 191
 192 /* Where are the ISA address/data registers relative to the EC base address */
 193 #define IT87_ADDR_REG_OFFSET 0
 194 #define IT87_DATA_REG_OFFSET 1
 195
 196 /*----- The IT87 registers -----*/
 197
 198 #define IT87_REG_CONFIG        0x00
 199
 200 #define IT87_REG_ALARM1        0x01
 201 #define IT87_REG_ALARM2        0x02
 202 #define IT87_REG_ALARM3        0x03
 203
 204 /*
 205  * The IT8718F and IT8720F have the VID value in a different register, in
 206  * Super-I/O configuration space.
 207  */
 208 #define IT87_REG_VID           0x0a
 209 /*
 210  * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
 211  * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
 212  * mode.
 213  */
 214 #define IT87_REG_FAN_DIV       0x0b
 215 #define IT87_REG_FAN_16BIT     0x0c
 216
 217 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
 218
 219 static const u8 IT87_REG_FAN[]          = { 0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x4c };
 220 static const u8 IT87_REG_FAN_MIN[]      = { 0x10, 0x11, 0x12, 0x84, 0x86, 0x4e };
 221 static const u8 IT87_REG_FANX[]         = { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d };
 222 static const u8 IT87_REG_FANX_MIN[]     = { 0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f };
 223 static const u8 IT87_REG_TEMP_OFFSET[]  = { 0x56, 0x57, 0x59 };
 224
 225 #define IT87_REG_FAN_MAIN_CTRL 0x13
 226 #define IT87_REG_FAN_CTL       0x14
 227 #define IT87_REG_PWM(nr)       (0x15 + (nr))
 228 #define IT87_REG_PWM_DUTY(nr)  (0x63 + (nr) * 8)
 229
 230 #define IT87_REG_VIN(nr)       (0x20 + (nr))
 231 #define IT87_REG_TEMP(nr)      (0x29 + (nr))
 232
 233 #define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 234 #define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 235 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
 236 #define IT87_REG_TEMP_LOW(nr)  (0x41 + (nr) * 2)
 237
 238 #define IT87_REG_VIN_ENABLE    0x50
 239 #define IT87_REG_TEMP_ENABLE   0x51
 240 #define IT87_REG_TEMP_EXTRA    0x55
 241 #define IT87_REG_BEEP_ENABLE   0x5c
 242
 243 #define IT87_REG_CHIPID        0x58
 244
 245 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
 246 #define IT87_REG_AUTO_PWM(nr, i)  (0x65 + (nr) * 8 + (i))
 247
 248 struct it87_devices {
 249         const char *name;
 250         u16 features;
 251         u8 peci_mask;
 252         u8 old_peci_mask;
 253 };
 254
 255 #define FEAT_12MV_ADC           (1 << 0)
 256 #define FEAT_NEWER_AUTOPWM      (1 << 1)
 257 #define FEAT_OLD_AUTOPWM        (1 << 2)
 258 #define FEAT_16BIT_FANS         (1 << 3)
 259 #define FEAT_TEMP_OFFSET        (1 << 4)
 260 #define FEAT_TEMP_PECI          (1 << 5)
 261 #define FEAT_TEMP_OLD_PECI      (1 << 6)
 262 #define FEAT_FAN16_CONFIG       (1 << 7)        /* Need to enable 16-bit fans */
 263 #define FEAT_FIVE_FANS          (1 << 8)        /* Supports five fans */
 264 #define FEAT_SIX_FANS           (1 << 9)        /* Supports six fans */
 265 #define FEAT_VID                (1 << 10)       /* Set if chip supports VID */
 266
 267 static const struct it87_devices it87_devices[] = {
 268         [it87] = {
 269                 .name = "it87",
 270                 .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
 271         },
 272         [it8712] = {
 273                 .name = "it8712",
 274                 .features = FEAT_OLD_AUTOPWM | FEAT_VID,
 275                                                 /* may need to overwrite */
 276         },
 277         [it8716] = {
 278                 .name = "it8716",
 279                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 280                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS,
 281         },
 282         [it8718] = {
 283                 .name = "it8718",
 284                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 285                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS,
 286                 .old_peci_mask = 0x4,
 287         },
 288         [it8720] = {
 289                 .name = "it8720",
 290                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 291                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS,
 292                 .old_peci_mask = 0x4,
 293         },
 294         [it8721] = {
 295                 .name = "it8721",
 296                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 297                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 298                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS,
 299                 .peci_mask = 0x05,
 300                 .old_peci_mask = 0x02,  /* Actually reports PCH */
 301         },
 302         [it8728] = {
 303                 .name = "it8728",
 304                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 305                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS,
 306                 .peci_mask = 0x07,
 307         },
 308         [it8771] = {
 309                 .name = "it8771",
 310                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 311                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 312                                 /* PECI: guesswork */
 313                                 /* 12mV ADC (OHM) */
 314                                 /* 16 bit fans (OHM) */
 315                                 /* three fans, always 16 bit (guesswork) */
 316                 .peci_mask = 0x07,
 317         },
 318         [it8772] = {
 319                 .name = "it8772",
 320                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 321                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 322                                 /* PECI (coreboot) */
 323                                 /* 12mV ADC (HWSensors4, OHM) */
 324                                 /* 16 bit fans (HWSensors4, OHM) */
 325                                 /* three fans, always 16 bit (datasheet) */
 326                 .peci_mask = 0x07,
 327         },
 328         [it8781] = {
 329                 .name = "it8781",
 330                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 331                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG,
 332                 .old_peci_mask = 0x4,
 333         },
 334         [it8782] = {
 335                 .name = "it8782",
 336                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 337                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG,
 338                 .old_peci_mask = 0x4,
 339         },
 340         [it8783] = {
 341                 .name = "it8783",
 342                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 343                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG,
 344                 .old_peci_mask = 0x4,
 345         },
 346         [it8786] = {
 347                 .name = "it8786",
 348                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 349                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 350                 .peci_mask = 0x07,
 351         },
 352         [it8603] = {
 353                 .name = "it8603",
 354                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 355                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 356                 .peci_mask = 0x07,
 357         },
 358         [it8620] = {
 359                 .name = "it8620",
 360                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 361                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS,
 362                 .peci_mask = 0x07,
 363         },
 364         [it8790] = {
 365                 .name = "it8790",
 366                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 367                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 368                 .peci_mask = 0x07,
 369         },
 370 };
 371
 372 #define has_16bit_fans(data)    ((data)->features & FEAT_16BIT_FANS)
 373 #define has_12mv_adc(data)      ((data)->features & FEAT_12MV_ADC)
 374 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
 375 #define has_old_autopwm(data)   ((data)->features & FEAT_OLD_AUTOPWM)
 376 #define has_temp_offset(data)   ((data)->features & FEAT_TEMP_OFFSET)
 377 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
 378                                  ((data)->peci_mask & (1 << nr)))
 379 #define has_temp_old_peci(data, nr) \
 380                                 (((data)->features & FEAT_TEMP_OLD_PECI) && \
 381                                  ((data)->old_peci_mask & (1 << nr)))
 382 #define has_fan16_config(data)  ((data)->features & FEAT_FAN16_CONFIG)
 383 #define has_five_fans(data)     ((data)->features & (FEAT_FIVE_FANS | \
 384                                                      FEAT_SIX_FANS))
 385 #define has_six_fans(data)      ((data)->features & FEAT_SIX_FANS)
 386 #define has_vid(data)           ((data)->features & FEAT_VID)
 387
 388 struct it87_sio_data {
 389         enum chips type;
 390         /* Values read from Super-I/O config space */
 391         u8 revision;
 392         u8 vid_value;
 393         u8 beep_pin;
 394         u8 internal;    /* Internal sensors can be labeled */
 395         /* Features skipped based on config or DMI */
 396         u16 skip_in;
 397         u8 skip_vid;
 398         u8 skip_fan;
 399         u8 skip_pwm;
 400         u8 skip_temp;
 401 };
 402
 403 /*
 404  * For each registered chip, we need to keep some data in memory.
 405  * The structure is dynamically allocated.
 406  */
 407 struct it87_data {
 408         struct device *hwmon_dev;
 409         enum chips type;
 410         u16 features;
 411         u8 peci_mask;
 412         u8 old_peci_mask;
 413
 414         unsigned short addr;
 415         const char *name;
 416         struct mutex update_lock;
 417         char valid;             /* !=0 if following fields are valid */
 418         unsigned long last_updated;     /* In jiffies */
 419
 420         u16 in_scaled;          /* Internal voltage sensors are scaled */
 421         u8 in[10][3];           /* [nr][0]=in, [1]=min, [2]=max */
 422         u8 has_fan;             /* Bitfield, fans enabled */
 423         u16 fan[6][2];          /* Register values, [nr][0]=fan, [1]=min */
 424         u8 has_temp;            /* Bitfield, temp sensors enabled */
 425         s8 temp[3][4];          /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 426         u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
 427         u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
 428         u8 fan_div[3];          /* Register encoding, shifted right */
 429         u8 vid;                 /* Register encoding, combined */
 430         u8 vrm;
 431         u32 alarms;             /* Register encoding, combined */
 432         u8 beeps;               /* Register encoding */
 433         u8 fan_main_ctrl;       /* Register value */
 434         u8 fan_ctl;             /* Register value */
 435
 436         /*
 437          * The following 3 arrays correspond to the same registers up to
 438          * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 439          * 7, and we want to preserve settings on mode changes, so we have
 440          * to track all values separately.
 441          * Starting with the IT8721F, the manual PWM duty cycles are stored
 442          * in separate registers (8-bit values), so the separate tracking
 443          * is no longer needed, but it is still done to keep the driver
 444          * simple.
 445          */
 446         u8 pwm_ctrl[3];         /* Register value */
 447         u8 pwm_duty[3];         /* Manual PWM value set by user */
 448         u8 pwm_temp_map[3];     /* PWM to temp. chan. mapping (bits 1-0) */
 449
 450         /* Automatic fan speed control registers */
 451         u8 auto_pwm[3][4];      /* [nr][3] is hard-coded */
 452         s8 auto_temp[3][5];     /* [nr][0] is point1_temp_hyst */
 453 };
 454
 455 static int adc_lsb(const struct it87_data *data, int nr)
 456 {
 457         int lsb = has_12mv_adc(data) ? 12 : 16;
 458         if (data->in_scaled & (1 << nr))
 459                 lsb <<= 1;
 460         return lsb;
 461 }
 462
 463 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 464 {
 465         val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
 466         return clamp_val(val, 0, 255);
 467 }
 468
 469 static int in_from_reg(const struct it87_data *data, int nr, int val)
 470 {
 471         return val * adc_lsb(data, nr);
 472 }
 473
 474 static inline u8 FAN_TO_REG(long rpm, int div)
 475 {
 476         if (rpm == 0)
 477                 return 255;
 478         rpm = clamp_val(rpm, 1, 1000000);
 479         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 480 }
 481
 482 static inline u16 FAN16_TO_REG(long rpm)
 483 {
 484         if (rpm == 0)
 485                 return 0xffff;
 486         return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 487 }
 488
 489 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 490                                 1350000 / ((val) * (div)))
 491 /* The divider is fixed to 2 in 16-bit mode */
 492 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 493                              1350000 / ((val) * 2))
 494
 495 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
 496                                     ((val) + 500) / 1000), -128, 127))
 497 #define TEMP_FROM_REG(val) ((val) * 1000)
 498
 499 static u8 pwm_to_reg(const struct it87_data *data, long val)
 500 {
 501         if (has_newer_autopwm(data))
 502                 return val;
 503         else
 504                 return val >> 1;
 505 }
 506
 507 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 508 {
 509         if (has_newer_autopwm(data))
 510                 return reg;
 511         else
 512                 return (reg & 0x7f) << 1;
 513 }
 514
 515
 516 static int DIV_TO_REG(int val)
 517 {
 518         int answer = 0;
 519         while (answer < 7 && (val >>= 1))
 520                 answer++;
 521         return answer;
 522 }
 523 #define DIV_FROM_REG(val) (1 << (val))
 524
 525 static const unsigned int pwm_freq[8] = {
 526         48000000 / 128,
 527         24000000 / 128,
 528         12000000 / 128,
 529         8000000 / 128,
 530         6000000 / 128,
 531         3000000 / 128,
 532         1500000 / 128,
 533         750000 / 128,
 534 };
 535
 536 static int it87_probe(struct platform_device *pdev);
 537 static int it87_remove(struct platform_device *pdev);
 538
 539 static int it87_read_value(struct it87_data *data, u8 reg);
 540 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
 541 static struct it87_data *it87_update_device(struct device *dev);
 542 static int it87_check_pwm(struct device *dev);
 543 static void it87_init_device(struct platform_device *pdev);
 544
 545
 546 static struct platform_driver it87_driver = {
 547         .driver = {
 548                 .name   = DRVNAME,
 549         },
 550         .probe  = it87_probe,
 551         .remove = it87_remove,
 552 };
 553
 554 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 555                        char *buf)
 556 {
 557         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 558         int nr = sattr->nr;
 559         int index = sattr->index;
 560
 561         struct it87_data *data = it87_update_device(dev);
 562         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 563 }
 564
 565 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
 566                       const char *buf, size_t count)
 567 {
 568         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 569         int nr = sattr->nr;
 570         int index = sattr->index;
 571
 572         struct it87_data *data = dev_get_drvdata(dev);
 573         unsigned long val;
 574
 575         if (kstrtoul(buf, 10, &val) < 0)
 576                 return -EINVAL;
 577
 578         mutex_lock(&data->update_lock);
 579         data->in[nr][index] = in_to_reg(data, nr, val);
 580         it87_write_value(data,
 581                          index == 1 ? IT87_REG_VIN_MIN(nr)
 582                                     : IT87_REG_VIN_MAX(nr),
 583                          data->in[nr][index]);
 584         mutex_unlock(&data->update_lock);
 585         return count;
 586 }
 587
 588 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 589 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 590                             0, 1);
 591 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 592                             0, 2);
 593
 594 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 595 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 596                             1, 1);
 597 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 598                             1, 2);
 599
 600 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 601 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 602                             2, 1);
 603 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 604                             2, 2);
 605
 606 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 607 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 608                             3, 1);
 609 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 610                             3, 2);
 611
 612 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 613 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 614                             4, 1);
 615 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 616                             4, 2);
 617
 618 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 619 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 620                             5, 1);
 621 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 622                             5, 2);
 623
 624 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 625 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 626                             6, 1);
 627 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 628                             6, 2);
 629
 630 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 631 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 632                             7, 1);
 633 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 634                             7, 2);
 635
 636 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 637 static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
 638
 639 /* 3 temperatures */
 640 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 641                          char *buf)
 642 {
 643         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 644         int nr = sattr->nr;
 645         int index = sattr->index;
 646         struct it87_data *data = it87_update_device(dev);
 647
 648         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 649 }
 650
 651 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 652                         const char *buf, size_t count)
 653 {
 654         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 655         int nr = sattr->nr;
 656         int index = sattr->index;
 657         struct it87_data *data = dev_get_drvdata(dev);
 658         long val;
 659         u8 reg, regval;
 660
 661         if (kstrtol(buf, 10, &val) < 0)
 662                 return -EINVAL;
 663
 664         mutex_lock(&data->update_lock);
 665
 666         switch (index) {
 667         default:
 668         case 1:
 669                 reg = IT87_REG_TEMP_LOW(nr);
 670                 break;
 671         case 2:
 672                 reg = IT87_REG_TEMP_HIGH(nr);
 673                 break;
 674         case 3:
 675                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 676                 if (!(regval & 0x80)) {
 677                         regval |= 0x80;
 678                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 679                 }
 680                 data->valid = 0;
 681                 reg = IT87_REG_TEMP_OFFSET[nr];
 682                 break;
 683         }
 684
 685         data->temp[nr][index] = TEMP_TO_REG(val);
 686         it87_write_value(data, reg, data->temp[nr][index]);
 687         mutex_unlock(&data->update_lock);
 688         return count;
 689 }
 690
 691 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
 692 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 693                             0, 1);
 694 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 695                             0, 2);
 696 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
 697                             set_temp, 0, 3);
 698 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
 699 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 700                             1, 1);
 701 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 702                             1, 2);
 703 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
 704                             set_temp, 1, 3);
 705 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
 706 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 707                             2, 1);
 708 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 709                             2, 2);
 710 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
 711                             set_temp, 2, 3);
 712
 713 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
 714                               char *buf)
 715 {
 716         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 717         int nr = sensor_attr->index;
 718         struct it87_data *data = it87_update_device(dev);
 719         u8 reg = data->sensor;      /* In case value is updated while used */
 720         u8 extra = data->extra;
 721
 722         if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
 723             || (has_temp_old_peci(data, nr) && (extra & 0x80)))
 724                 return sprintf(buf, "6\n");  /* Intel PECI */
 725         if (reg & (1 << nr))
 726                 return sprintf(buf, "3\n");  /* thermal diode */
 727         if (reg & (8 << nr))
 728                 return sprintf(buf, "4\n");  /* thermistor */
 729         return sprintf(buf, "0\n");      /* disabled */
 730 }
 731
 732 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
 733                              const char *buf, size_t count)
 734 {
 735         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 736         int nr = sensor_attr->index;
 737
 738         struct it87_data *data = dev_get_drvdata(dev);
 739         long val;
 740         u8 reg, extra;
 741
 742         if (kstrtol(buf, 10, &val) < 0)
 743                 return -EINVAL;
 744
 745         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 746         reg &= ~(1 << nr);
 747         reg &= ~(8 << nr);
 748         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
 749                 reg &= 0x3f;
 750         extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
 751         if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
 752                 extra &= 0x7f;
 753         if (val == 2) { /* backwards compatibility */
 754                 dev_warn(dev,
 755                          "Sensor type 2 is deprecated, please use 4 instead\n");
 756                 val = 4;
 757         }
 758         /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
 759         if (val == 3)
 760                 reg |= 1 << nr;
 761         else if (val == 4)
 762                 reg |= 8 << nr;
 763         else if (has_temp_peci(data, nr) && val == 6)
 764                 reg |= (nr + 1) << 6;
 765         else if (has_temp_old_peci(data, nr) && val == 6)
 766                 extra |= 0x80;
 767         else if (val != 0)
 768                 return -EINVAL;
 769
 770         mutex_lock(&data->update_lock);
 771         data->sensor = reg;
 772         data->extra = extra;
 773         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
 774         if (has_temp_old_peci(data, nr))
 775                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
 776         data->valid = 0;        /* Force cache refresh */
 777         mutex_unlock(&data->update_lock);
 778         return count;
 779 }
 780
 781 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
 782                           set_temp_type, 0);
 783 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
 784                           set_temp_type, 1);
 785 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
 786                           set_temp_type, 2);
 787
 788 /* 3 Fans */
 789
 790 static int pwm_mode(const struct it87_data *data, int nr)
 791 {
 792         int ctrl = data->fan_main_ctrl & (1 << nr);
 793
 794         if (ctrl == 0 && data->type != it8603)          /* Full speed */
 795                 return 0;
 796         if (data->pwm_ctrl[nr] & 0x80)                  /* Automatic mode */
 797                 return 2;
 798         else                                            /* Manual mode */
 799                 return 1;
 800 }
 801
 802 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 803                         char *buf)
 804 {
 805         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 806         int nr = sattr->nr;
 807         int index = sattr->index;
 808         int speed;
 809         struct it87_data *data = it87_update_device(dev);
 810
 811         speed = has_16bit_fans(data) ?
 812                 FAN16_FROM_REG(data->fan[nr][index]) :
 813                 FAN_FROM_REG(data->fan[nr][index],
 814                              DIV_FROM_REG(data->fan_div[nr]));
 815         return sprintf(buf, "%d\n", speed);
 816 }
 817
 818 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 819                 char *buf)
 820 {
 821         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 822         int nr = sensor_attr->index;
 823
 824         struct it87_data *data = it87_update_device(dev);
 825         return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
 826 }
 827 static ssize_t show_pwm_enable(struct device *dev,
 828                 struct device_attribute *attr, char *buf)
 829 {
 830         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 831         int nr = sensor_attr->index;
 832
 833         struct it87_data *data = it87_update_device(dev);
 834         return sprintf(buf, "%d\n", pwm_mode(data, nr));
 835 }
 836 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 837                 char *buf)
 838 {
 839         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 840         int nr = sensor_attr->index;
 841
 842         struct it87_data *data = it87_update_device(dev);
 843         return sprintf(buf, "%d\n",
 844                        pwm_from_reg(data, data->pwm_duty[nr]));
 845 }
 846 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
 847                 char *buf)
 848 {
 849         struct it87_data *data = it87_update_device(dev);
 850         int index = (data->fan_ctl >> 4) & 0x07;
 851
 852         return sprintf(buf, "%u\n", pwm_freq[index]);
 853 }
 854
 855 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 856                        const char *buf, size_t count)
 857 {
 858         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 859         int nr = sattr->nr;
 860         int index = sattr->index;
 861
 862         struct it87_data *data = dev_get_drvdata(dev);
 863         long val;
 864         u8 reg;
 865
 866         if (kstrtol(buf, 10, &val) < 0)
 867                 return -EINVAL;
 868
 869         mutex_lock(&data->update_lock);
 870
 871         if (has_16bit_fans(data)) {
 872                 data->fan[nr][index] = FAN16_TO_REG(val);
 873                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 874                                  data->fan[nr][index] & 0xff);
 875                 it87_write_value(data, IT87_REG_FANX_MIN[nr],
 876                                  data->fan[nr][index] >> 8);
 877         } else {
 878                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
 879                 switch (nr) {
 880                 case 0:
 881                         data->fan_div[nr] = reg & 0x07;
 882                         break;
 883                 case 1:
 884                         data->fan_div[nr] = (reg >> 3) & 0x07;
 885                         break;
 886                 case 2:
 887                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
 888                         break;
 889                 }
 890                 data->fan[nr][index] =
 891                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 892                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 893                                  data->fan[nr][index]);
 894         }
 895
 896         mutex_unlock(&data->update_lock);
 897         return count;
 898 }
 899
 900 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 901                 const char *buf, size_t count)
 902 {
 903         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 904         int nr = sensor_attr->index;
 905
 906         struct it87_data *data = dev_get_drvdata(dev);
 907         unsigned long val;
 908         int min;
 909         u8 old;
 910
 911         if (kstrtoul(buf, 10, &val) < 0)
 912                 return -EINVAL;
 913
 914         mutex_lock(&data->update_lock);
 915         old = it87_read_value(data, IT87_REG_FAN_DIV);
 916
 917         /* Save fan min limit */
 918         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
 919
 920         switch (nr) {
 921         case 0:
 922         case 1:
 923                 data->fan_div[nr] = DIV_TO_REG(val);
 924                 break;
 925         case 2:
 926                 if (val < 8)
 927                         data->fan_div[nr] = 1;
 928                 else
 929                         data->fan_div[nr] = 3;
 930         }
 931         val = old & 0x80;
 932         val |= (data->fan_div[0] & 0x07);
 933         val |= (data->fan_div[1] & 0x07) << 3;
 934         if (data->fan_div[2] == 3)
 935                 val |= 0x1 << 6;
 936         it87_write_value(data, IT87_REG_FAN_DIV, val);
 937
 938         /* Restore fan min limit */
 939         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 940         it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
 941
 942         mutex_unlock(&data->update_lock);
 943         return count;
 944 }
 945
 946 /* Returns 0 if OK, -EINVAL otherwise */
 947 static int check_trip_points(struct device *dev, int nr)
 948 {
 949         const struct it87_data *data = dev_get_drvdata(dev);
 950         int i, err = 0;
 951
 952         if (has_old_autopwm(data)) {
 953                 for (i = 0; i < 3; i++) {
 954                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
 955                                 err = -EINVAL;
 956                 }
 957                 for (i = 0; i < 2; i++) {
 958                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
 959                                 err = -EINVAL;
 960                 }
 961         }
 962
 963         if (err) {
 964                 dev_err(dev,
 965                         "Inconsistent trip points, not switching to automatic mode\n");
 966                 dev_err(dev, "Adjust the trip points and try again\n");
 967         }
 968         return err;
 969 }
 970
 971 static ssize_t set_pwm_enable(struct device *dev,
 972                 struct device_attribute *attr, const char *buf, size_t count)
 973 {
 974         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 975         int nr = sensor_attr->index;
 976
 977         struct it87_data *data = dev_get_drvdata(dev);
 978         long val;
 979
 980         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
 981                 return -EINVAL;
 982
 983         /* Check trip points before switching to automatic mode */
 984         if (val == 2) {
 985                 if (check_trip_points(dev, nr) < 0)
 986                         return -EINVAL;
 987         }
 988
 989         /* IT8603E does not have on/off mode */
 990         if (val == 0 && data->type == it8603)
 991                 return -EINVAL;
 992
 993         mutex_lock(&data->update_lock);
 994
 995         if (val == 0) {
 996                 int tmp;
 997                 /* make sure the fan is on when in on/off mode */
 998                 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
 999                 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
1000                 /* set on/off mode */
1001                 data->fan_main_ctrl &= ~(1 << nr);
1002                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1003                                  data->fan_main_ctrl);
1004         } else {
1005                 if (val == 1)                           /* Manual mode */
1006                         data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
1007                                              data->pwm_temp_map[nr] :
1008                                              data->pwm_duty[nr];
1009                 else                                    /* Automatic mode */
1010                         data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1011                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1012
1013                 if (data->type != it8603) {
1014                         /* set SmartGuardian mode */
1015                         data->fan_main_ctrl |= (1 << nr);
1016                         it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1017                                          data->fan_main_ctrl);
1018                 }
1019         }
1020
1021         mutex_unlock(&data->update_lock);
1022         return count;
1023 }
1024 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1025                 const char *buf, size_t count)
1026 {
1027         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1028         int nr = sensor_attr->index;
1029
1030         struct it87_data *data = dev_get_drvdata(dev);
1031         long val;
1032
1033         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1034                 return -EINVAL;
1035
1036         mutex_lock(&data->update_lock);
1037         if (has_newer_autopwm(data)) {
1038                 /*
1039                  * If we are in automatic mode, the PWM duty cycle register
1040                  * is read-only so we can't write the value.
1041                  */
1042                 if (data->pwm_ctrl[nr] & 0x80) {
1043                         mutex_unlock(&data->update_lock);
1044                         return -EBUSY;
1045                 }
1046                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1047                 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
1048                                  data->pwm_duty[nr]);
1049         } else {
1050                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1051                 /*
1052                  * If we are in manual mode, write the duty cycle immediately;
1053                  * otherwise, just store it for later use.
1054                  */
1055                 if (!(data->pwm_ctrl[nr] & 0x80)) {
1056                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
1057                         it87_write_value(data, IT87_REG_PWM(nr),
1058                                          data->pwm_ctrl[nr]);
1059                 }
1060         }
1061         mutex_unlock(&data->update_lock);
1062         return count;
1063 }
1064 static ssize_t set_pwm_freq(struct device *dev,
1065                 struct device_attribute *attr, const char *buf, size_t count)
1066 {
1067         struct it87_data *data = dev_get_drvdata(dev);
1068         unsigned long val;
1069         int i;
1070
1071         if (kstrtoul(buf, 10, &val) < 0)
1072                 return -EINVAL;
1073
1074         /* Search for the nearest available frequency */
1075         for (i = 0; i < 7; i++) {
1076                 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
1077                         break;
1078         }
1079
1080         mutex_lock(&data->update_lock);
1081         data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1082         data->fan_ctl |= i << 4;
1083         it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1084         mutex_unlock(&data->update_lock);
1085
1086         return count;
1087 }
1088 static ssize_t show_pwm_temp_map(struct device *dev,
1089                 struct device_attribute *attr, char *buf)
1090 {
1091         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1092         int nr = sensor_attr->index;
1093
1094         struct it87_data *data = it87_update_device(dev);
1095         int map;
1096
1097         if (data->pwm_temp_map[nr] < 3)
1098                 map = 1 << data->pwm_temp_map[nr];
1099         else
1100                 map = 0;                        /* Should never happen */
1101         return sprintf(buf, "%d\n", map);
1102 }
1103 static ssize_t set_pwm_temp_map(struct device *dev,
1104                 struct device_attribute *attr, const char *buf, size_t count)
1105 {
1106         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1107         int nr = sensor_attr->index;
1108
1109         struct it87_data *data = dev_get_drvdata(dev);
1110         long val;
1111         u8 reg;
1112
1113         /*
1114          * This check can go away if we ever support automatic fan speed
1115          * control on newer chips.
1116          */
1117         if (!has_old_autopwm(data)) {
1118                 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1119                 return -EINVAL;
1120         }
1121
1122         if (kstrtol(buf, 10, &val) < 0)
1123                 return -EINVAL;
1124
1125         switch (val) {
1126         case (1 << 0):
1127                 reg = 0x00;
1128                 break;
1129         case (1 << 1):
1130                 reg = 0x01;
1131                 break;
1132         case (1 << 2):
1133                 reg = 0x02;
1134                 break;
1135         default:
1136                 return -EINVAL;
1137         }
1138
1139         mutex_lock(&data->update_lock);
1140         data->pwm_temp_map[nr] = reg;
1141         /*
1142          * If we are in automatic mode, write the temp mapping immediately;
1143          * otherwise, just store it for later use.
1144          */
1145         if (data->pwm_ctrl[nr] & 0x80) {
1146                 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1147                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1148         }
1149         mutex_unlock(&data->update_lock);
1150         return count;
1151 }
1152
1153 static ssize_t show_auto_pwm(struct device *dev,
1154                 struct device_attribute *attr, char *buf)
1155 {
1156         struct it87_data *data = it87_update_device(dev);
1157         struct sensor_device_attribute_2 *sensor_attr =
1158                         to_sensor_dev_attr_2(attr);
1159         int nr = sensor_attr->nr;
1160         int point = sensor_attr->index;
1161
1162         return sprintf(buf, "%d\n",
1163                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1164 }
1165
1166 static ssize_t set_auto_pwm(struct device *dev,
1167                 struct device_attribute *attr, const char *buf, size_t count)
1168 {
1169         struct it87_data *data = dev_get_drvdata(dev);
1170         struct sensor_device_attribute_2 *sensor_attr =
1171                         to_sensor_dev_attr_2(attr);
1172         int nr = sensor_attr->nr;
1173         int point = sensor_attr->index;
1174         long val;
1175
1176         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1177                 return -EINVAL;
1178
1179         mutex_lock(&data->update_lock);
1180         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1181         it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1182                          data->auto_pwm[nr][point]);
1183         mutex_unlock(&data->update_lock);
1184         return count;
1185 }
1186
1187 static ssize_t show_auto_temp(struct device *dev,
1188                 struct device_attribute *attr, char *buf)
1189 {
1190         struct it87_data *data = it87_update_device(dev);
1191         struct sensor_device_attribute_2 *sensor_attr =
1192                         to_sensor_dev_attr_2(attr);
1193         int nr = sensor_attr->nr;
1194         int point = sensor_attr->index;
1195
1196         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1197 }
1198
1199 static ssize_t set_auto_temp(struct device *dev,
1200                 struct device_attribute *attr, const char *buf, size_t count)
1201 {
1202         struct it87_data *data = dev_get_drvdata(dev);
1203         struct sensor_device_attribute_2 *sensor_attr =
1204                         to_sensor_dev_attr_2(attr);
1205         int nr = sensor_attr->nr;
1206         int point = sensor_attr->index;
1207         long val;
1208
1209         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1210                 return -EINVAL;
1211
1212         mutex_lock(&data->update_lock);
1213         data->auto_temp[nr][point] = TEMP_TO_REG(val);
1214         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1215                          data->auto_temp[nr][point]);
1216         mutex_unlock(&data->update_lock);
1217         return count;
1218 }
1219
1220 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1221 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1222                             0, 1);
1223 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1224                           set_fan_div, 0);
1225
1226 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1227 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1228                             1, 1);
1229 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1230                           set_fan_div, 1);
1231
1232 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1233 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1234                             2, 1);
1235 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1236                           set_fan_div, 2);
1237
1238 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1239 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1240                             3, 1);
1241
1242 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1243 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1244                             4, 1);
1245
1246 static SENSOR_DEVICE_ATTR_2(fan6_input, S_IRUGO, show_fan, NULL, 5, 0);
1247 static SENSOR_DEVICE_ATTR_2(fan6_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1248                             5, 1);
1249
1250 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1251                           show_pwm_enable, set_pwm_enable, 0);
1252 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1253 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1254 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1255                           show_pwm_temp_map, set_pwm_temp_map, 0);
1256 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1257                             show_auto_pwm, set_auto_pwm, 0, 0);
1258 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1259                             show_auto_pwm, set_auto_pwm, 0, 1);
1260 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1261                             show_auto_pwm, set_auto_pwm, 0, 2);
1262 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1263                             show_auto_pwm, NULL, 0, 3);
1264 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1265                             show_auto_temp, set_auto_temp, 0, 1);
1266 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1267                             show_auto_temp, set_auto_temp, 0, 0);
1268 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1269                             show_auto_temp, set_auto_temp, 0, 2);
1270 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1271                             show_auto_temp, set_auto_temp, 0, 3);
1272 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1273                             show_auto_temp, set_auto_temp, 0, 4);
1274
1275 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1276                           show_pwm_enable, set_pwm_enable, 1);
1277 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1278 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1279 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1280                           show_pwm_temp_map, set_pwm_temp_map, 1);
1281 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1282                             show_auto_pwm, set_auto_pwm, 1, 0);
1283 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1284                             show_auto_pwm, set_auto_pwm, 1, 1);
1285 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1286                             show_auto_pwm, set_auto_pwm, 1, 2);
1287 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1288                             show_auto_pwm, NULL, 1, 3);
1289 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1290                             show_auto_temp, set_auto_temp, 1, 1);
1291 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1292                             show_auto_temp, set_auto_temp, 1, 0);
1293 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1294                             show_auto_temp, set_auto_temp, 1, 2);
1295 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1296                             show_auto_temp, set_auto_temp, 1, 3);
1297 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1298                             show_auto_temp, set_auto_temp, 1, 4);
1299
1300 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1301                           show_pwm_enable, set_pwm_enable, 2);
1302 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1303 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1304 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1305                           show_pwm_temp_map, set_pwm_temp_map, 2);
1306 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1307                             show_auto_pwm, set_auto_pwm, 2, 0);
1308 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1309                             show_auto_pwm, set_auto_pwm, 2, 1);
1310 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1311                             show_auto_pwm, set_auto_pwm, 2, 2);
1312 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1313                             show_auto_pwm, NULL, 2, 3);
1314 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1315                             show_auto_temp, set_auto_temp, 2, 1);
1316 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1317                             show_auto_temp, set_auto_temp, 2, 0);
1318 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1319                             show_auto_temp, set_auto_temp, 2, 2);
1320 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1321                             show_auto_temp, set_auto_temp, 2, 3);
1322 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1323                             show_auto_temp, set_auto_temp, 2, 4);
1324
1325 /* Alarms */
1326 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1327                 char *buf)
1328 {
1329         struct it87_data *data = it87_update_device(dev);
1330         return sprintf(buf, "%u\n", data->alarms);
1331 }
1332 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1333
1334 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1335                 char *buf)
1336 {
1337         int bitnr = to_sensor_dev_attr(attr)->index;
1338         struct it87_data *data = it87_update_device(dev);
1339         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1340 }
1341
1342 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1343                 *attr, const char *buf, size_t count)
1344 {
1345         struct it87_data *data = dev_get_drvdata(dev);
1346         long val;
1347         int config;
1348
1349         if (kstrtol(buf, 10, &val) < 0 || val != 0)
1350                 return -EINVAL;
1351
1352         mutex_lock(&data->update_lock);
1353         config = it87_read_value(data, IT87_REG_CONFIG);
1354         if (config < 0) {
1355                 count = config;
1356         } else {
1357                 config |= 1 << 5;
1358                 it87_write_value(data, IT87_REG_CONFIG, config);
1359                 /* Invalidate cache to force re-read */
1360                 data->valid = 0;
1361         }
1362         mutex_unlock(&data->update_lock);
1363
1364         return count;
1365 }
1366
1367 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1368 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1369 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1370 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1371 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1372 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1373 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1374 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1375 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1376 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1377 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1378 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1379 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1380 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 7);
1381 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1382 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1383 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1384 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1385                           show_alarm, clear_intrusion, 4);
1386
1387 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1388                 char *buf)
1389 {
1390         int bitnr = to_sensor_dev_attr(attr)->index;
1391         struct it87_data *data = it87_update_device(dev);
1392         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1393 }
1394 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1395                 const char *buf, size_t count)
1396 {
1397         int bitnr = to_sensor_dev_attr(attr)->index;
1398         struct it87_data *data = dev_get_drvdata(dev);
1399         long val;
1400
1401         if (kstrtol(buf, 10, &val) < 0
1402          || (val != 0 && val != 1))
1403                 return -EINVAL;
1404
1405         mutex_lock(&data->update_lock);
1406         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1407         if (val)
1408                 data->beeps |= (1 << bitnr);
1409         else
1410                 data->beeps &= ~(1 << bitnr);
1411         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1412         mutex_unlock(&data->update_lock);
1413         return count;
1414 }
1415
1416 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1417                           show_beep, set_beep, 1);
1418 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1419 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1420 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1421 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1422 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1423 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1424 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1425 /* fanX_beep writability is set later */
1426 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1427 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1428 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1429 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1430 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1431 static SENSOR_DEVICE_ATTR(fan6_beep, S_IRUGO, show_beep, set_beep, 0);
1432 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1433                           show_beep, set_beep, 2);
1434 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1435 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1436
1437 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1438                 char *buf)
1439 {
1440         struct it87_data *data = dev_get_drvdata(dev);
1441         return sprintf(buf, "%u\n", data->vrm);
1442 }
1443 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1444                 const char *buf, size_t count)
1445 {
1446         struct it87_data *data = dev_get_drvdata(dev);
1447         unsigned long val;
1448
1449         if (kstrtoul(buf, 10, &val) < 0)
1450                 return -EINVAL;
1451
1452         data->vrm = val;
1453
1454         return count;
1455 }
1456 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1457
1458 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1459                 char *buf)
1460 {
1461         struct it87_data *data = it87_update_device(dev);
1462         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1463 }
1464 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1465
1466 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1467                 char *buf)
1468 {
1469         static const char * const labels[] = {
1470                 "+5V",
1471                 "5VSB",
1472                 "Vbat",
1473         };
1474         static const char * const labels_it8721[] = {
1475                 "+3.3V",
1476                 "3VSB",
1477                 "Vbat",
1478         };
1479         struct it87_data *data = dev_get_drvdata(dev);
1480         int nr = to_sensor_dev_attr(attr)->index;
1481
1482         return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1483                                                        : labels[nr]);
1484 }
1485 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1486 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1487 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1488 /* special AVCC3 IT8603E in9 */
1489 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 0);
1490
1491 static ssize_t show_name(struct device *dev, struct device_attribute
1492                          *devattr, char *buf)
1493 {
1494         struct it87_data *data = dev_get_drvdata(dev);
1495         return sprintf(buf, "%s\n", data->name);
1496 }
1497 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1498
1499 static struct attribute *it87_attributes_in[10][5] = {
1500 {
1501         &sensor_dev_attr_in0_input.dev_attr.attr,
1502         &sensor_dev_attr_in0_min.dev_attr.attr,
1503         &sensor_dev_attr_in0_max.dev_attr.attr,
1504         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1505         NULL
1506 }, {
1507         &sensor_dev_attr_in1_input.dev_attr.attr,
1508         &sensor_dev_attr_in1_min.dev_attr.attr,
1509         &sensor_dev_attr_in1_max.dev_attr.attr,
1510         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1511         NULL
1512 }, {
1513         &sensor_dev_attr_in2_input.dev_attr.attr,
1514         &sensor_dev_attr_in2_min.dev_attr.attr,
1515         &sensor_dev_attr_in2_max.dev_attr.attr,
1516         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1517         NULL
1518 }, {
1519         &sensor_dev_attr_in3_input.dev_attr.attr,
1520         &sensor_dev_attr_in3_min.dev_attr.attr,
1521         &sensor_dev_attr_in3_max.dev_attr.attr,
1522         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1523         NULL
1524 }, {
1525         &sensor_dev_attr_in4_input.dev_attr.attr,
1526         &sensor_dev_attr_in4_min.dev_attr.attr,
1527         &sensor_dev_attr_in4_max.dev_attr.attr,
1528         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1529         NULL
1530 }, {
1531         &sensor_dev_attr_in5_input.dev_attr.attr,
1532         &sensor_dev_attr_in5_min.dev_attr.attr,
1533         &sensor_dev_attr_in5_max.dev_attr.attr,
1534         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1535         NULL
1536 }, {
1537         &sensor_dev_attr_in6_input.dev_attr.attr,
1538         &sensor_dev_attr_in6_min.dev_attr.attr,
1539         &sensor_dev_attr_in6_max.dev_attr.attr,
1540         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1541         NULL
1542 }, {
1543         &sensor_dev_attr_in7_input.dev_attr.attr,
1544         &sensor_dev_attr_in7_min.dev_attr.attr,
1545         &sensor_dev_attr_in7_max.dev_attr.attr,
1546         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1547         NULL
1548 }, {
1549         &sensor_dev_attr_in8_input.dev_attr.attr,
1550         NULL
1551 }, {
1552         &sensor_dev_attr_in9_input.dev_attr.attr,
1553         NULL
1554 } };
1555
1556 static const struct attribute_group it87_group_in[10] = {
1557         { .attrs = it87_attributes_in[0] },
1558         { .attrs = it87_attributes_in[1] },
1559         { .attrs = it87_attributes_in[2] },
1560         { .attrs = it87_attributes_in[3] },
1561         { .attrs = it87_attributes_in[4] },
1562         { .attrs = it87_attributes_in[5] },
1563         { .attrs = it87_attributes_in[6] },
1564         { .attrs = it87_attributes_in[7] },
1565         { .attrs = it87_attributes_in[8] },
1566         { .attrs = it87_attributes_in[9] },
1567 };
1568
1569 static struct attribute *it87_attributes_temp[3][6] = {
1570 {
1571         &sensor_dev_attr_temp1_input.dev_attr.attr,
1572         &sensor_dev_attr_temp1_max.dev_attr.attr,
1573         &sensor_dev_attr_temp1_min.dev_attr.attr,
1574         &sensor_dev_attr_temp1_type.dev_attr.attr,
1575         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1576         NULL
1577 } , {
1578         &sensor_dev_attr_temp2_input.dev_attr.attr,
1579         &sensor_dev_attr_temp2_max.dev_attr.attr,
1580         &sensor_dev_attr_temp2_min.dev_attr.attr,
1581         &sensor_dev_attr_temp2_type.dev_attr.attr,
1582         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1583         NULL
1584 } , {
1585         &sensor_dev_attr_temp3_input.dev_attr.attr,
1586         &sensor_dev_attr_temp3_max.dev_attr.attr,
1587         &sensor_dev_attr_temp3_min.dev_attr.attr,
1588         &sensor_dev_attr_temp3_type.dev_attr.attr,
1589         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1590         NULL
1591 } };
1592
1593 static const struct attribute_group it87_group_temp[3] = {
1594         { .attrs = it87_attributes_temp[0] },
1595         { .attrs = it87_attributes_temp[1] },
1596         { .attrs = it87_attributes_temp[2] },
1597 };
1598
1599 static struct attribute *it87_attributes_temp_offset[] = {
1600         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1601         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1602         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1603 };
1604
1605 static struct attribute *it87_attributes[] = {
1606         &dev_attr_alarms.attr,
1607         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1608         &dev_attr_name.attr,
1609         NULL
1610 };
1611
1612 static const struct attribute_group it87_group = {
1613         .attrs = it87_attributes,
1614 };
1615
1616 static struct attribute *it87_attributes_in_beep[] = {
1617         &sensor_dev_attr_in0_beep.dev_attr.attr,
1618         &sensor_dev_attr_in1_beep.dev_attr.attr,
1619         &sensor_dev_attr_in2_beep.dev_attr.attr,
1620         &sensor_dev_attr_in3_beep.dev_attr.attr,
1621         &sensor_dev_attr_in4_beep.dev_attr.attr,
1622         &sensor_dev_attr_in5_beep.dev_attr.attr,
1623         &sensor_dev_attr_in6_beep.dev_attr.attr,
1624         &sensor_dev_attr_in7_beep.dev_attr.attr,
1625         NULL,
1626         NULL,
1627 };
1628
1629 static struct attribute *it87_attributes_temp_beep[] = {
1630         &sensor_dev_attr_temp1_beep.dev_attr.attr,
1631         &sensor_dev_attr_temp2_beep.dev_attr.attr,
1632         &sensor_dev_attr_temp3_beep.dev_attr.attr,
1633 };
1634
1635 static struct attribute *it87_attributes_fan[6][3+1] = { {
1636         &sensor_dev_attr_fan1_input.dev_attr.attr,
1637         &sensor_dev_attr_fan1_min.dev_attr.attr,
1638         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1639         NULL
1640 }, {
1641         &sensor_dev_attr_fan2_input.dev_attr.attr,
1642         &sensor_dev_attr_fan2_min.dev_attr.attr,
1643         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1644         NULL
1645 }, {
1646         &sensor_dev_attr_fan3_input.dev_attr.attr,
1647         &sensor_dev_attr_fan3_min.dev_attr.attr,
1648         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1649         NULL
1650 }, {
1651         &sensor_dev_attr_fan4_input.dev_attr.attr,
1652         &sensor_dev_attr_fan4_min.dev_attr.attr,
1653         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1654         NULL
1655 }, {
1656         &sensor_dev_attr_fan5_input.dev_attr.attr,
1657         &sensor_dev_attr_fan5_min.dev_attr.attr,
1658         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1659         NULL
1660 }, {
1661         &sensor_dev_attr_fan6_input.dev_attr.attr,
1662         &sensor_dev_attr_fan6_min.dev_attr.attr,
1663         &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1664         NULL
1665 } };
1666
1667 static const struct attribute_group it87_group_fan[6] = {
1668         { .attrs = it87_attributes_fan[0] },
1669         { .attrs = it87_attributes_fan[1] },
1670         { .attrs = it87_attributes_fan[2] },
1671         { .attrs = it87_attributes_fan[3] },
1672         { .attrs = it87_attributes_fan[4] },
1673         { .attrs = it87_attributes_fan[5] },
1674 };
1675
1676 static const struct attribute *it87_attributes_fan_div[] = {
1677         &sensor_dev_attr_fan1_div.dev_attr.attr,
1678         &sensor_dev_attr_fan2_div.dev_attr.attr,
1679         &sensor_dev_attr_fan3_div.dev_attr.attr,
1680 };
1681
1682 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1683         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1684         &sensor_dev_attr_pwm1.dev_attr.attr,
1685         &dev_attr_pwm1_freq.attr,
1686         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1687         NULL
1688 }, {
1689         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1690         &sensor_dev_attr_pwm2.dev_attr.attr,
1691         &dev_attr_pwm2_freq.attr,
1692         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1693         NULL
1694 }, {
1695         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1696         &sensor_dev_attr_pwm3.dev_attr.attr,
1697         &dev_attr_pwm3_freq.attr,
1698         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1699         NULL
1700 } };
1701
1702 static const struct attribute_group it87_group_pwm[3] = {
1703         { .attrs = it87_attributes_pwm[0] },
1704         { .attrs = it87_attributes_pwm[1] },
1705         { .attrs = it87_attributes_pwm[2] },
1706 };
1707
1708 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1709         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1710         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1711         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1712         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1713         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1714         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1715         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1716         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1717         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1718         NULL
1719 }, {
1720         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1721         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1722         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1723         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1724         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1725         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1726         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1727         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1728         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1729         NULL
1730 }, {
1731         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1732         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1733         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1734         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1735         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1736         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1737         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1738         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1739         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1740         NULL
1741 } };
1742
1743 static const struct attribute_group it87_group_autopwm[3] = {
1744         { .attrs = it87_attributes_autopwm[0] },
1745         { .attrs = it87_attributes_autopwm[1] },
1746         { .attrs = it87_attributes_autopwm[2] },
1747 };
1748
1749 static struct attribute *it87_attributes_fan_beep[] = {
1750         &sensor_dev_attr_fan1_beep.dev_attr.attr,
1751         &sensor_dev_attr_fan2_beep.dev_attr.attr,
1752         &sensor_dev_attr_fan3_beep.dev_attr.attr,
1753         &sensor_dev_attr_fan4_beep.dev_attr.attr,
1754         &sensor_dev_attr_fan5_beep.dev_attr.attr,
1755         &sensor_dev_attr_fan6_beep.dev_attr.attr,
1756 };
1757
1758 static struct attribute *it87_attributes_vid[] = {
1759         &dev_attr_vrm.attr,
1760         &dev_attr_cpu0_vid.attr,
1761         NULL
1762 };
1763
1764 static const struct attribute_group it87_group_vid = {
1765         .attrs = it87_attributes_vid,
1766 };
1767
1768 static struct attribute *it87_attributes_label[] = {
1769         &sensor_dev_attr_in3_label.dev_attr.attr,
1770         &sensor_dev_attr_in7_label.dev_attr.attr,
1771         &sensor_dev_attr_in8_label.dev_attr.attr,
1772         &sensor_dev_attr_in9_label.dev_attr.attr,
1773         NULL
1774 };
1775
1776 static const struct attribute_group it87_group_label = {
1777         .attrs = it87_attributes_label,
1778 };
1779
1780 /* SuperIO detection - will change isa_address if a chip is found */
1781 static int __init it87_find(unsigned short *address,
1782         struct it87_sio_data *sio_data)
1783 {
1784         int err;
1785         u16 chip_type;
1786         const char *board_vendor, *board_name;
1787
1788         err = superio_enter();
1789         if (err)
1790                 return err;
1791
1792         err = -ENODEV;
1793         chip_type = force_id ? force_id : superio_inw(DEVID);
1794
1795         switch (chip_type) {
1796         case IT8705F_DEVID:
1797                 sio_data->type = it87;
1798                 break;
1799         case IT8712F_DEVID:
1800                 sio_data->type = it8712;
1801                 break;
1802         case IT8716F_DEVID:
1803         case IT8726F_DEVID:
1804                 sio_data->type = it8716;
1805                 break;
1806         case IT8718F_DEVID:
1807                 sio_data->type = it8718;
1808                 break;
1809         case IT8720F_DEVID:
1810                 sio_data->type = it8720;
1811                 break;
1812         case IT8721F_DEVID:
1813                 sio_data->type = it8721;
1814                 break;
1815         case IT8728F_DEVID:
1816                 sio_data->type = it8728;
1817                 break;
1818         case IT8771E_DEVID:
1819                 sio_data->type = it8771;
1820                 break;
1821         case IT8772E_DEVID:
1822                 sio_data->type = it8772;
1823                 break;
1824         case IT8781F_DEVID:
1825                 sio_data->type = it8781;
1826                 break;
1827         case IT8782F_DEVID:
1828                 sio_data->type = it8782;
1829                 break;
1830         case IT8783E_DEVID:
1831                 sio_data->type = it8783;
1832                 break;
1833         case IT8786E_DEVID:
1834                 sio_data->type = it8786;
1835                 break;
1836         case IT8603E_DEVID:
1837         case IT8623E_DEVID:
1838                 sio_data->type = it8603;
1839                 break;
1840         case IT8620E_DEVID:
1841                 sio_data->type = it8620;
1842                 break;
1843         case IT8790E_DEVID:
1844                 sio_data->type = it8790;
1845                 break;
1846         case 0xffff:    /* No device at all */
1847                 goto exit;
1848         default:
1849                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1850                 goto exit;
1851         }
1852
1853         superio_select(PME);
1854         if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1855                 pr_info("Device not activated, skipping\n");
1856                 goto exit;
1857         }
1858
1859         *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1860         if (*address == 0) {
1861                 pr_info("Base address not set, skipping\n");
1862                 goto exit;
1863         }
1864
1865         err = 0;
1866         sio_data->revision = superio_inb(DEVREV) & 0x0f;
1867         pr_info("Found IT%04x%c chip at 0x%x, revision %d\n", chip_type,
1868                 chip_type == 0x8771 || chip_type == 0x8772 ||
1869                 chip_type == 0x8786 || chip_type == 0x8603 ||
1870                 chip_type == 0x8620 || chip_type == 0x8790 ? 'E' : 'F',
1871                 *address, sio_data->revision);
1872
1873         /* in8 (Vbat) is always internal */
1874         sio_data->internal = (1 << 2);
1875         /* Only the IT8603E has in9 */
1876         if (sio_data->type != it8603)
1877                 sio_data->skip_in |= (1 << 9);
1878
1879         if (!(it87_devices[sio_data->type].features & FEAT_VID))
1880                 sio_data->skip_vid = 1;
1881
1882         /* Read GPIO config and VID value from LDN 7 (GPIO) */
1883         if (sio_data->type == it87) {
1884                 /* The IT8705F has a different LD number for GPIO */
1885                 superio_select(5);
1886                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1887         } else if (sio_data->type == it8783) {
1888                 int reg25, reg27, reg2a, reg2c, regef;
1889
1890                 superio_select(GPIO);
1891
1892                 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1893                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1894                 reg2a = superio_inb(IT87_SIO_PINX1_REG);
1895                 reg2c = superio_inb(IT87_SIO_PINX2_REG);
1896                 regef = superio_inb(IT87_SIO_SPI_REG);
1897
1898                 /* Check if fan3 is there or not */
1899                 if ((reg27 & (1 << 0)) || !(reg2c & (1 << 2)))
1900                         sio_data->skip_fan |= (1 << 2);
1901                 if ((reg25 & (1 << 4))
1902                     || (!(reg2a & (1 << 1)) && (regef & (1 << 0))))
1903                         sio_data->skip_pwm |= (1 << 2);
1904
1905                 /* Check if fan2 is there or not */
1906                 if (reg27 & (1 << 7))
1907                         sio_data->skip_fan |= (1 << 1);
1908                 if (reg27 & (1 << 3))
1909                         sio_data->skip_pwm |= (1 << 1);
1910
1911                 /* VIN5 */
1912                 if ((reg27 & (1 << 0)) || (reg2c & (1 << 2)))
1913                         sio_data->skip_in |= (1 << 5); /* No VIN5 */
1914
1915                 /* VIN6 */
1916                 if (reg27 & (1 << 1))
1917                         sio_data->skip_in |= (1 << 6); /* No VIN6 */
1918
1919                 /*
1920                  * VIN7
1921                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1922                  */
1923                 if (reg27 & (1 << 2)) {
1924                         /*
1925                          * The data sheet is a bit unclear regarding the
1926                          * internal voltage divider for VCCH5V. It says
1927                          * "This bit enables and switches VIN7 (pin 91) to the
1928                          * internal voltage divider for VCCH5V".
1929                          * This is different to other chips, where the internal
1930                          * voltage divider would connect VIN7 to an internal
1931                          * voltage source. Maybe that is the case here as well.
1932                          *
1933                          * Since we don't know for sure, re-route it if that is
1934                          * not the case, and ask the user to report if the
1935                          * resulting voltage is sane.
1936                          */
1937                         if (!(reg2c & (1 << 1))) {
1938                                 reg2c |= (1 << 1);
1939                                 superio_outb(IT87_SIO_PINX2_REG, reg2c);
1940                                 pr_notice("Routing internal VCCH5V to in7.\n");
1941                         }
1942                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1943                         pr_notice("Please report if it displays a reasonable voltage.\n");
1944                 }
1945
1946                 if (reg2c & (1 << 0))
1947                         sio_data->internal |= (1 << 0);
1948                 if (reg2c & (1 << 1))
1949                         sio_data->internal |= (1 << 1);
1950
1951                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1952         } else if (sio_data->type == it8603) {
1953                 int reg27, reg29;
1954
1955                 superio_select(GPIO);
1956
1957                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1958
1959                 /* Check if fan3 is there or not */
1960                 if (reg27 & (1 << 6))
1961                         sio_data->skip_pwm |= (1 << 2);
1962                 if (reg27 & (1 << 7))
1963                         sio_data->skip_fan |= (1 << 2);
1964
1965                 /* Check if fan2 is there or not */
1966                 reg29 = superio_inb(IT87_SIO_GPIO5_REG);
1967                 if (reg29 & (1 << 1))
1968                         sio_data->skip_pwm |= (1 << 1);
1969                 if (reg29 & (1 << 2))
1970                         sio_data->skip_fan |= (1 << 1);
1971
1972                 sio_data->skip_in |= (1 << 5); /* No VIN5 */
1973                 sio_data->skip_in |= (1 << 6); /* No VIN6 */
1974
1975                 sio_data->internal |= (1 << 1); /* in7 is VSB */
1976                 sio_data->internal |= (1 << 3); /* in9 is AVCC */
1977
1978                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1979         } else {
1980                 int reg;
1981                 bool uart6;
1982
1983                 superio_select(GPIO);
1984
1985                 reg = superio_inb(IT87_SIO_GPIO3_REG);
1986                 if (!sio_data->skip_vid) {
1987                         /* We need at least 4 VID pins */
1988                         if (reg & 0x0f) {
1989                                 pr_info("VID is disabled (pins used for GPIO)\n");
1990                                 sio_data->skip_vid = 1;
1991                         }
1992                 }
1993
1994                 /* Check if fan3 is there or not */
1995                 if (reg & (1 << 6))
1996                         sio_data->skip_pwm |= (1 << 2);
1997                 if (reg & (1 << 7))
1998                         sio_data->skip_fan |= (1 << 2);
1999
2000                 /* Check if fan2 is there or not */
2001                 reg = superio_inb(IT87_SIO_GPIO5_REG);
2002                 if (reg & (1 << 1))
2003                         sio_data->skip_pwm |= (1 << 1);
2004                 if (reg & (1 << 2))
2005                         sio_data->skip_fan |= (1 << 1);
2006
2007                 if ((sio_data->type == it8718 || sio_data->type == it8720)
2008                  && !(sio_data->skip_vid))
2009                         sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
2010
2011                 reg = superio_inb(IT87_SIO_PINX2_REG);
2012
2013                 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
2014
2015                 /*
2016                  * The IT8720F has no VIN7 pin, so VCCH should always be
2017                  * routed internally to VIN7 with an internal divider.
2018                  * Curiously, there still is a configuration bit to control
2019                  * this, which means it can be set incorrectly. And even
2020                  * more curiously, many boards out there are improperly
2021                  * configured, even though the IT8720F datasheet claims
2022                  * that the internal routing of VCCH to VIN7 is the default
2023                  * setting. So we force the internal routing in this case.
2024                  *
2025                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
2026                  * If UART6 is enabled, re-route VIN7 to the internal divider
2027                  * if that is not already the case.
2028                  */
2029                 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
2030                         reg |= (1 << 1);
2031                         superio_outb(IT87_SIO_PINX2_REG, reg);
2032                         pr_notice("Routing internal VCCH to in7\n");
2033                 }
2034                 if (reg & (1 << 0))
2035                         sio_data->internal |= (1 << 0);
2036                 if ((reg & (1 << 1)) ||
2037                     sio_data->type == it8620 || sio_data->type == it8721 ||
2038                     sio_data->type == it8728 || sio_data->type == it8771 ||
2039                     sio_data->type == it8772 || sio_data->type == it8786)
2040                         sio_data->internal |= (1 << 1);
2041
2042                 /*
2043                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
2044                  * While VIN7 can be routed to the internal voltage divider,
2045                  * VIN5 and VIN6 are not available if UART6 is enabled.
2046                  *
2047                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
2048                  * is the temperature source. Since we can not read the
2049                  * temperature source here, skip_temp is preliminary.
2050                  */
2051                 if (uart6) {
2052                         sio_data->skip_in |= (1 << 5) | (1 << 6);
2053                         sio_data->skip_temp |= (1 << 2);
2054                 }
2055
2056                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
2057         }
2058         if (sio_data->beep_pin)
2059                 pr_info("Beeping is supported\n");
2060
2061         /* Disable specific features based on DMI strings */
2062         board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
2063         board_name = dmi_get_system_info(DMI_BOARD_NAME);
2064         if (board_vendor && board_name) {
2065                 if (strcmp(board_vendor, "nVIDIA") == 0
2066                  && strcmp(board_name, "FN68PT") == 0) {
2067                         /*
2068                          * On the Shuttle SN68PT, FAN_CTL2 is apparently not
2069                          * connected to a fan, but to something else. One user
2070                          * has reported instant system power-off when changing
2071                          * the PWM2 duty cycle, so we disable it.
2072                          * I use the board name string as the trigger in case
2073                          * the same board is ever used in other systems.
2074                          */
2075                         pr_info("Disabling pwm2 due to hardware constraints\n");
2076                         sio_data->skip_pwm = (1 << 1);
2077                 }
2078         }
2079
2080 exit:
2081         superio_exit();
2082         return err;
2083 }
2084
2085 static void it87_remove_files(struct device *dev)
2086 {
2087         struct it87_data *data = platform_get_drvdata(pdev);
2088         struct it87_sio_data *sio_data = dev_get_platdata(dev);
2089         int i;
2090
2091         sysfs_remove_group(&dev->kobj, &it87_group);
2092         for (i = 0; i < 10; i++) {
2093                 if (sio_data->skip_in & (1 << i))
2094                         continue;
2095                 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
2096                 if (it87_attributes_in_beep[i])
2097                         sysfs_remove_file(&dev->kobj,
2098                                           it87_attributes_in_beep[i]);
2099         }
2100         for (i = 0; i < 3; i++) {
2101                 if (!(data->has_temp & (1 << i)))
2102                         continue;
2103                 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
2104                 if (has_temp_offset(data))
2105                         sysfs_remove_file(&dev->kobj,
2106                                           it87_attributes_temp_offset[i]);
2107                 if (sio_data->beep_pin)
2108                         sysfs_remove_file(&dev->kobj,
2109                                           it87_attributes_temp_beep[i]);
2110         }
2111         for (i = 0; i < 6; i++) {
2112                 if (!(data->has_fan & (1 << i)))
2113                         continue;
2114                 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
2115                 if (sio_data->beep_pin)
2116                         sysfs_remove_file(&dev->kobj,
2117                                           it87_attributes_fan_beep[i]);
2118                 if (i < 3 && !has_16bit_fans(data))
2119                         sysfs_remove_file(&dev->kobj,
2120                                           it87_attributes_fan_div[i]);
2121         }
2122         for (i = 0; i < 3; i++) {
2123                 if (sio_data->skip_pwm & (1 << 0))
2124                         continue;
2125                 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
2126                 if (has_old_autopwm(data))
2127                         sysfs_remove_group(&dev->kobj,
2128                                            &it87_group_autopwm[i]);
2129         }
2130         if (!sio_data->skip_vid)
2131                 sysfs_remove_group(&dev->kobj, &it87_group_vid);
2132         sysfs_remove_group(&dev->kobj, &it87_group_label);
2133 }
2134
2135 static int it87_probe(struct platform_device *pdev)
2136 {
2137         struct it87_data *data;
2138         struct resource *res;
2139         struct device *dev = &pdev->dev;
2140         struct it87_sio_data *sio_data = dev_get_platdata(dev);
2141         int err = 0, i;
2142         int enable_pwm_interface;
2143         int fan_beep_need_rw;
2144
2145         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2146         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
2147                                  DRVNAME)) {
2148                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
2149                         (unsigned long)res->start,
2150                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
2151                 return -EBUSY;
2152         }
2153
2154         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2155         if (!data)
2156                 return -ENOMEM;
2157
2158         data->addr = res->start;
2159         data->type = sio_data->type;
2160         data->features = it87_devices[sio_data->type].features;
2161         data->peci_mask = it87_devices[sio_data->type].peci_mask;
2162         data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
2163         data->name = it87_devices[sio_data->type].name;
2164         /*
2165          * IT8705F Datasheet 0.4.1, 3h == Version G.
2166          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
2167          * These are the first revisions with 16-bit tachometer support.
2168          */
2169         switch (data->type) {
2170         case it87:
2171                 if (sio_data->revision >= 0x03) {
2172                         data->features &= ~FEAT_OLD_AUTOPWM;
2173                         data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS;
2174                 }
2175                 break;
2176         case it8712:
2177                 if (sio_data->revision >= 0x08) {
2178                         data->features &= ~FEAT_OLD_AUTOPWM;
2179                         data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS |
2180                                           FEAT_FIVE_FANS;
2181                 }
2182                 break;
2183         default:
2184                 break;
2185         }
2186
2187         /* Now, we do the remaining detection. */
2188         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2189          || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2190                 return -ENODEV;
2191
2192         platform_set_drvdata(pdev, data);
2193
2194         mutex_init(&data->update_lock);
2195
2196         /* Check PWM configuration */
2197         enable_pwm_interface = it87_check_pwm(dev);
2198
2199         /* Starting with IT8721F, we handle scaling of internal voltages */
2200         if (has_12mv_adc(data)) {
2201                 if (sio_data->internal & (1 << 0))
2202                         data->in_scaled |= (1 << 3);    /* in3 is AVCC */
2203                 if (sio_data->internal & (1 << 1))
2204                         data->in_scaled |= (1 << 7);    /* in7 is VSB */
2205                 if (sio_data->internal & (1 << 2))
2206                         data->in_scaled |= (1 << 8);    /* in8 is Vbat */
2207                 if (sio_data->internal & (1 << 3))
2208                         data->in_scaled |= (1 << 9);    /* in9 is AVCC */
2209         } else if (sio_data->type == it8781 || sio_data->type == it8782 ||
2210                    sio_data->type == it8783) {
2211                 if (sio_data->internal & (1 << 0))
2212                         data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
2213                 if (sio_data->internal & (1 << 1))
2214                         data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
2215         }
2216
2217         data->has_temp = 0x07;
2218         if (sio_data->skip_temp & (1 << 2)) {
2219                 if (sio_data->type == it8782
2220                     && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2221                         data->has_temp &= ~(1 << 2);
2222         }
2223
2224         /* Initialize the IT87 chip */
2225         it87_init_device(pdev);
2226
2227         /* Register sysfs hooks */
2228         err = sysfs_create_group(&dev->kobj, &it87_group);
2229         if (err)
2230                 return err;
2231
2232         for (i = 0; i < 10; i++) {
2233                 if (sio_data->skip_in & (1 << i))
2234                         continue;
2235                 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2236                 if (err)
2237                         goto error;
2238                 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2239                         err = sysfs_create_file(&dev->kobj,
2240                                                 it87_attributes_in_beep[i]);
2241                         if (err)
2242                                 goto error;
2243                 }
2244         }
2245
2246         for (i = 0; i < 3; i++) {
2247                 if (!(data->has_temp & (1 << i)))
2248                         continue;
2249                 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2250                 if (err)
2251                         goto error;
2252                 if (has_temp_offset(data)) {
2253                         err = sysfs_create_file(&dev->kobj,
2254                                                 it87_attributes_temp_offset[i]);
2255                         if (err)
2256                                 goto error;
2257                 }
2258                 if (sio_data->beep_pin) {
2259                         err = sysfs_create_file(&dev->kobj,
2260                                                 it87_attributes_temp_beep[i]);
2261                         if (err)
2262                                 goto error;
2263                 }
2264         }
2265
2266         /* Do not create fan files for disabled fans */
2267         fan_beep_need_rw = 1;
2268         for (i = 0; i < 6; i++) {
2269                 if (!(data->has_fan & (1 << i)))
2270                         continue;
2271                 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2272                 if (err)
2273                         goto error;
2274
2275                 if (i < 3 && !has_16bit_fans(data)) {
2276                         err = sysfs_create_file(&dev->kobj,
2277                                                 it87_attributes_fan_div[i]);
2278                         if (err)
2279                                 goto error;
2280                 }
2281
2282                 if (sio_data->beep_pin) {
2283                         err = sysfs_create_file(&dev->kobj,
2284                                                 it87_attributes_fan_beep[i]);
2285                         if (err)
2286                                 goto error;
2287                         if (!fan_beep_need_rw)
2288                                 continue;
2289
2290                         /*
2291                          * As we have a single beep enable bit for all fans,
2292                          * only the first enabled fan has a writable attribute
2293                          * for it.
2294                          */
2295                         if (sysfs_chmod_file(&dev->kobj,
2296                                              it87_attributes_fan_beep[i],
2297                                              S_IRUGO | S_IWUSR))
2298                                 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2299                                         i + 1);
2300                         fan_beep_need_rw = 0;
2301                 }
2302         }
2303
2304         if (enable_pwm_interface) {
2305                 for (i = 0; i < 3; i++) {
2306                         if (sio_data->skip_pwm & (1 << i))
2307                                 continue;
2308                         err = sysfs_create_group(&dev->kobj,
2309                                                  &it87_group_pwm[i]);
2310                         if (err)
2311                                 goto error;
2312
2313                         if (!has_old_autopwm(data))
2314                                 continue;
2315                         err = sysfs_create_group(&dev->kobj,
2316                                                  &it87_group_autopwm[i]);
2317                         if (err)
2318                                 goto error;
2319                 }
2320         }
2321
2322         if (!sio_data->skip_vid) {
2323                 data->vrm = vid_which_vrm();
2324                 /* VID reading from Super-I/O config space if available */
2325                 data->vid = sio_data->vid_value;
2326                 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2327                 if (err)
2328                         goto error;
2329         }
2330
2331         /* Export labels for internal sensors */
2332         for (i = 0; i < 4; i++) {
2333                 if (!(sio_data->internal & (1 << i)))
2334                         continue;
2335                 err = sysfs_create_file(&dev->kobj,
2336                                         it87_attributes_label[i]);
2337                 if (err)
2338                         goto error;
2339         }
2340
2341         data->hwmon_dev = hwmon_device_register(dev);
2342         if (IS_ERR(data->hwmon_dev)) {
2343                 err = PTR_ERR(data->hwmon_dev);
2344                 goto error;
2345         }
2346
2347         return 0;
2348
2349 error:
2350         it87_remove_files(dev);
2351         return err;
2352 }
2353
2354 static int it87_remove(struct platform_device *pdev)
2355 {
2356         struct it87_data *data = platform_get_drvdata(pdev);
2357
2358         hwmon_device_unregister(data->hwmon_dev);
2359         it87_remove_files(&pdev->dev);
2360
2361         return 0;
2362 }
2363
2364 /*
2365  * Must be called with data->update_lock held, except during initialization.
2366  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2367  * would slow down the IT87 access and should not be necessary.
2368  */
2369 static int it87_read_value(struct it87_data *data, u8 reg)
2370 {
2371         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2372         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2373 }
2374
2375 /*
2376  * Must be called with data->update_lock held, except during initialization.
2377  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2378  * would slow down the IT87 access and should not be necessary.
2379  */
2380 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2381 {
2382         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2383         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2384 }
2385
2386 /* Return 1 if and only if the PWM interface is safe to use */
2387 static int it87_check_pwm(struct device *dev)
2388 {
2389         struct it87_data *data = dev_get_drvdata(dev);
2390         /*
2391          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2392          * and polarity set to active low is sign that this is the case so we
2393          * disable pwm control to protect the user.
2394          */
2395         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2396         if ((tmp & 0x87) == 0) {
2397                 if (fix_pwm_polarity) {
2398                         /*
2399                          * The user asks us to attempt a chip reconfiguration.
2400                          * This means switching to active high polarity and
2401                          * inverting all fan speed values.
2402                          */
2403                         int i;
2404                         u8 pwm[3];
2405
2406                         for (i = 0; i < 3; i++)
2407                                 pwm[i] = it87_read_value(data,
2408                                                          IT87_REG_PWM(i));
2409
2410                         /*
2411                          * If any fan is in automatic pwm mode, the polarity
2412                          * might be correct, as suspicious as it seems, so we
2413                          * better don't change anything (but still disable the
2414                          * PWM interface).
2415                          */
2416                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2417                                 dev_info(dev,
2418                                          "Reconfiguring PWM to active high polarity\n");
2419                                 it87_write_value(data, IT87_REG_FAN_CTL,
2420                                                  tmp | 0x87);
2421                                 for (i = 0; i < 3; i++)
2422                                         it87_write_value(data,
2423                                                          IT87_REG_PWM(i),
2424                                                          0x7f & ~pwm[i]);
2425                                 return 1;
2426                         }
2427
2428                         dev_info(dev,
2429                                  "PWM configuration is too broken to be fixed\n");
2430                 }
2431
2432                 dev_info(dev,
2433                          "Detected broken BIOS defaults, disabling PWM interface\n");
2434                 return 0;
2435         } else if (fix_pwm_polarity) {
2436                 dev_info(dev,
2437                          "PWM configuration looks sane, won't touch\n");
2438         }
2439
2440         return 1;
2441 }
2442
2443 /* Called when we have found a new IT87. */
2444 static void it87_init_device(struct platform_device *pdev)
2445 {
2446         struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
2447         struct it87_data *data = platform_get_drvdata(pdev);
2448         int tmp, i;
2449         u8 mask;
2450
2451         /*
2452          * For each PWM channel:
2453          * - If it is in automatic mode, setting to manual mode should set
2454          *   the fan to full speed by default.
2455          * - If it is in manual mode, we need a mapping to temperature
2456          *   channels to use when later setting to automatic mode later.
2457          *   Use a 1:1 mapping by default (we are clueless.)
2458          * In both cases, the value can (and should) be changed by the user
2459          * prior to switching to a different mode.
2460          * Note that this is no longer needed for the IT8721F and later, as
2461          * these have separate registers for the temperature mapping and the
2462          * manual duty cycle.
2463          */
2464         for (i = 0; i < 3; i++) {
2465                 data->pwm_temp_map[i] = i;
2466                 data->pwm_duty[i] = 0x7f;       /* Full speed */
2467                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2468         }
2469
2470         /*
2471          * Some chips seem to have default value 0xff for all limit
2472          * registers. For low voltage limits it makes no sense and triggers
2473          * alarms, so change to 0 instead. For high temperature limits, it
2474          * means -1 degree C, which surprisingly doesn't trigger an alarm,
2475          * but is still confusing, so change to 127 degrees C.
2476          */
2477         for (i = 0; i < 8; i++) {
2478                 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2479                 if (tmp == 0xff)
2480                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2481         }
2482         for (i = 0; i < 3; i++) {
2483                 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2484                 if (tmp == 0xff)
2485                         it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2486         }
2487
2488         /*
2489          * Temperature channels are not forcibly enabled, as they can be
2490          * set to two different sensor types and we can't guess which one
2491          * is correct for a given system. These channels can be enabled at
2492          * run-time through the temp{1-3}_type sysfs accessors if needed.
2493          */
2494
2495         /* Check if voltage monitors are reset manually or by some reason */
2496         tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2497         if ((tmp & 0xff) == 0) {
2498                 /* Enable all voltage monitors */
2499                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2500         }
2501
2502         /* Check if tachometers are reset manually or by some reason */
2503         mask = 0x70 & ~(sio_data->skip_fan << 4);
2504         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2505         if ((data->fan_main_ctrl & mask) == 0) {
2506                 /* Enable all fan tachometers */
2507                 data->fan_main_ctrl |= mask;
2508                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2509                                  data->fan_main_ctrl);
2510         }
2511         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2512
2513         tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2514
2515         /* Set tachometers to 16-bit mode if needed */
2516         if (has_fan16_config(data)) {
2517                 if (~tmp & 0x07 & data->has_fan) {
2518                         dev_dbg(&pdev->dev,
2519                                 "Setting fan1-3 to 16-bit mode\n");
2520                         it87_write_value(data, IT87_REG_FAN_16BIT,
2521                                          tmp | 0x07);
2522                 }
2523         }
2524
2525         /* Check for additional fans */
2526         if (has_five_fans(data)) {
2527                 if (tmp & (1 << 4))
2528                         data->has_fan |= (1 << 3); /* fan4 enabled */
2529                 if (tmp & (1 << 5))
2530                         data->has_fan |= (1 << 4); /* fan5 enabled */
2531         }
2532
2533         if (has_six_fans(data)) {
2534                 if (tmp & (1 << 2))
2535                         data->has_fan |= (1 << 5); /* fan6 enabled */
2536         }
2537
2538         /* Fan input pins may be used for alternative functions */
2539         data->has_fan &= ~sio_data->skip_fan;
2540
2541         /* Start monitoring */
2542         it87_write_value(data, IT87_REG_CONFIG,
2543                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2544                          | (update_vbat ? 0x41 : 0x01));
2545 }
2546
2547 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2548 {
2549         data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2550         if (has_newer_autopwm(data)) {
2551                 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2552                 data->pwm_duty[nr] = it87_read_value(data,
2553                                                      IT87_REG_PWM_DUTY(nr));
2554         } else {
2555                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
2556                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2557                 else                            /* Manual mode */
2558                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2559         }
2560
2561         if (has_old_autopwm(data)) {
2562                 int i;
2563
2564                 for (i = 0; i < 5 ; i++)
2565                         data->auto_temp[nr][i] = it87_read_value(data,
2566                                                 IT87_REG_AUTO_TEMP(nr, i));
2567                 for (i = 0; i < 3 ; i++)
2568                         data->auto_pwm[nr][i] = it87_read_value(data,
2569                                                 IT87_REG_AUTO_PWM(nr, i));
2570         }
2571 }
2572
2573 static struct it87_data *it87_update_device(struct device *dev)
2574 {
2575         struct it87_data *data = dev_get_drvdata(dev);
2576         int i;
2577
2578         mutex_lock(&data->update_lock);
2579
2580         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2581             || !data->valid) {
2582                 if (update_vbat) {
2583                         /*
2584                          * Cleared after each update, so reenable.  Value
2585                          * returned by this read will be previous value
2586                          */
2587                         it87_write_value(data, IT87_REG_CONFIG,
2588                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2589                 }
2590                 for (i = 0; i <= 7; i++) {
2591                         data->in[i][0] =
2592                                 it87_read_value(data, IT87_REG_VIN(i));
2593                         data->in[i][1] =
2594                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
2595                         data->in[i][2] =
2596                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
2597                 }
2598                 /* in8 (battery) has no limit registers */
2599                 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2600                 if (data->type == it8603)
2601                         data->in[9][0] = it87_read_value(data, 0x2f);
2602
2603                 for (i = 0; i < 6; i++) {
2604                         /* Skip disabled fans */
2605                         if (!(data->has_fan & (1 << i)))
2606                                 continue;
2607
2608                         data->fan[i][1] =
2609                                 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2610                         data->fan[i][0] = it87_read_value(data,
2611                                        IT87_REG_FAN[i]);
2612                         /* Add high byte if in 16-bit mode */
2613                         if (has_16bit_fans(data)) {
2614                                 data->fan[i][0] |= it87_read_value(data,
2615                                                 IT87_REG_FANX[i]) << 8;
2616                                 data->fan[i][1] |= it87_read_value(data,
2617                                                 IT87_REG_FANX_MIN[i]) << 8;
2618                         }
2619                 }
2620                 for (i = 0; i < 3; i++) {
2621                         if (!(data->has_temp & (1 << i)))
2622                                 continue;
2623                         data->temp[i][0] =
2624                                 it87_read_value(data, IT87_REG_TEMP(i));
2625                         data->temp[i][1] =
2626                                 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2627                         data->temp[i][2] =
2628                                 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2629                         if (has_temp_offset(data))
2630                                 data->temp[i][3] =
2631                                   it87_read_value(data,
2632                                                   IT87_REG_TEMP_OFFSET[i]);
2633                 }
2634
2635                 /* Newer chips don't have clock dividers */
2636                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2637                         i = it87_read_value(data, IT87_REG_FAN_DIV);
2638                         data->fan_div[0] = i & 0x07;
2639                         data->fan_div[1] = (i >> 3) & 0x07;
2640                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
2641                 }
2642
2643                 data->alarms =
2644                         it87_read_value(data, IT87_REG_ALARM1) |
2645                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2646                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
2647                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2648
2649                 data->fan_main_ctrl = it87_read_value(data,
2650                                 IT87_REG_FAN_MAIN_CTRL);
2651                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2652                 for (i = 0; i < 3; i++)
2653                         it87_update_pwm_ctrl(data, i);
2654
2655                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2656                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
2657                 /*
2658                  * The IT8705F does not have VID capability.
2659                  * The IT8718F and later don't use IT87_REG_VID for the
2660                  * same purpose.
2661                  */
2662                 if (data->type == it8712 || data->type == it8716) {
2663                         data->vid = it87_read_value(data, IT87_REG_VID);
2664                         /*
2665                          * The older IT8712F revisions had only 5 VID pins,
2666                          * but we assume it is always safe to read 6 bits.
2667                          */
2668                         data->vid &= 0x3f;
2669                 }
2670                 data->last_updated = jiffies;
2671                 data->valid = 1;
2672         }
2673
2674         mutex_unlock(&data->update_lock);
2675
2676         return data;
2677 }
2678
2679 static int __init it87_device_add(unsigned short address,
2680                                   const struct it87_sio_data *sio_data)
2681 {
2682         struct resource res = {
2683                 .start  = address + IT87_EC_OFFSET,
2684                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2685                 .name   = DRVNAME,
2686                 .flags  = IORESOURCE_IO,
2687         };
2688         int err;
2689
2690         err = acpi_check_resource_conflict(&res);
2691         if (err)
2692                 goto exit;
2693
2694         pdev = platform_device_alloc(DRVNAME, address);
2695         if (!pdev) {
2696                 err = -ENOMEM;
2697                 pr_err("Device allocation failed\n");
2698                 goto exit;
2699         }
2700
2701         err = platform_device_add_resources(pdev, &res, 1);
2702         if (err) {
2703                 pr_err("Device resource addition failed (%d)\n", err);
2704                 goto exit_device_put;
2705         }
2706
2707         err = platform_device_add_data(pdev, sio_data,
2708                                        sizeof(struct it87_sio_data));
2709         if (err) {
2710                 pr_err("Platform data allocation failed\n");
2711                 goto exit_device_put;
2712         }
2713
2714         err = platform_device_add(pdev);
2715         if (err) {
2716                 pr_err("Device addition failed (%d)\n", err);
2717                 goto exit_device_put;
2718         }
2719
2720         return 0;
2721
2722 exit_device_put:
2723         platform_device_put(pdev);
2724 exit:
2725         return err;
2726 }
2727
2728 static int __init sm_it87_init(void)
2729 {
2730         int err;
2731         unsigned short isa_address = 0;
2732         struct it87_sio_data sio_data;
2733
2734         memset(&sio_data, 0, sizeof(struct it87_sio_data));
2735         err = it87_find(&isa_address, &sio_data);
2736         if (err)
2737                 return err;
2738         err = platform_driver_register(&it87_driver);
2739         if (err)
2740                 return err;
2741
2742         err = it87_device_add(isa_address, &sio_data);
2743         if (err) {
2744                 platform_driver_unregister(&it87_driver);
2745                 return err;
2746         }
2747
2748         return 0;
2749 }
2750
2751 static void __exit sm_it87_exit(void)
2752 {
2753         platform_device_unregister(pdev);
2754         platform_driver_unregister(&it87_driver);
2755 }
2756
2757
2758 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
2759 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2760 module_param(update_vbat, bool, 0);
2761 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2762 module_param(fix_pwm_polarity, bool, 0);
2763 MODULE_PARM_DESC(fix_pwm_polarity,
2764                  "Force PWM polarity to active high (DANGEROUS)");
2765 MODULE_LICENSE("GPL");
2766
2767 module_init(sm_it87_init);
2768 module_exit(sm_it87_exit);