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  *            IT8607E  Super I/O chip w/LPC interface
  15  *            IT8613E  Super I/O chip w/LPC interface
  16  *            IT8620E  Super I/O chip w/LPC interface
  17  *            IT8622E  Super I/O chip w/LPC interface
  18  *            IT8623E  Super I/O chip w/LPC interface
  19  *            IT8625E  Super I/O chip w/LPC interface
  20  *            IT8628E  Super I/O chip w/LPC interface
  21  *            IT8655E  Super I/O chip w/LPC interface
  22  *            IT8665E  Super I/O chip w/LPC interface
  23  *            IT8686E  Super I/O chip w/LPC interface
  24  *            IT8705F  Super I/O chip w/LPC interface
  25  *            IT8712F  Super I/O chip w/LPC interface
  26  *            IT8716F  Super I/O chip w/LPC interface
  27  *            IT8718F  Super I/O chip w/LPC interface
  28  *            IT8720F  Super I/O chip w/LPC interface
  29  *            IT8721F  Super I/O chip w/LPC interface
  30  *            IT8726F  Super I/O chip w/LPC interface
  31  *            IT8728F  Super I/O chip w/LPC interface
  32  *            IT8732F  Super I/O chip w/LPC interface
  33  *            IT8758E  Super I/O chip w/LPC interface
  34  *            IT8771E  Super I/O chip w/LPC interface
  35  *            IT8772E  Super I/O chip w/LPC interface
  36  *            IT8781F  Super I/O chip w/LPC interface
  37  *            IT8782F  Super I/O chip w/LPC interface
  38  *            IT8783E/F Super I/O chip w/LPC interface
  39  *            IT8786E  Super I/O chip w/LPC interface
  40  *            IT8790E  Super I/O chip w/LPC interface
  41  *            IT8792E  Super I/O chip w/LPC interface
  42  *            Sis950   A clone of the IT8705F
  43  *
  44  *  Copyright (C) 2001 Chris Gauthron
  45  *  Copyright (C) 2005-2010 Jean Delvare <jdelvare@suse.de>
  46  *
  47  *  This program is free software; you can redistribute it and/or modify
  48  *  it under the terms of the GNU General Public License as published by
  49  *  the Free Software Foundation; either version 2 of the License, or
  50  *  (at your option) any later version.
  51  *
  52  *  This program is distributed in the hope that it will be useful,
  53  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  54  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  55  *  GNU General Public License for more details.
  56  */
  57
  58 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  59
  60 #include <linux/bitops.h>
  61 #include <linux/module.h>
  62 #include <linux/init.h>
  63 #include <linux/slab.h>
  64 #include <linux/jiffies.h>
  65 #include <linux/platform_device.h>
  66 #include <linux/hwmon.h>
  67 #include <linux/hwmon-sysfs.h>
  68 #include <linux/hwmon-vid.h>
  69 #include <linux/err.h>
  70 #include <linux/mutex.h>
  71 #include <linux/sysfs.h>
  72 #include <linux/string.h>
  73 #include <linux/dmi.h>
  74 #include <linux/acpi.h>
  75 #include <linux/io.h>
  76 #include "compat.h"
  77
  78 #define DRVNAME "it87"
  79
  80 /* Necessary API not (yet) exported in upstream kernel */
  81 /* #define __IT87_USE_ACPI_MUTEX */
  82
  83 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
  84              it8771, it8772, it8781, it8782, it8783, it8786, it8790,
  85              it8792, it8603, it8607, it8613, it8620, it8622, it8625, it8628,
  86              it8655, it8665, it8686 };
  87
  88 static unsigned short force_id;
  89 module_param(force_id, ushort, 0);
  90 MODULE_PARM_DESC(force_id, "Override the detected device ID");
  91
  92 static struct platform_device *it87_pdev[2];
  93 static bool it87_sio4e_broken;
  94 #ifdef __IT87_USE_ACPI_MUTEX
  95 static acpi_handle it87_acpi_sio_handle;
  96 static char *it87_acpi_sio_mutex;
  97 #endif
  98
  99 #define REG_2E  0x2e    /* The register to read/write */
 100 #define REG_4E  0x4e    /* Secondary register to read/write */
 101
 102 #define DEV     0x07    /* Register: Logical device select */
 103 #define PME     0x04    /* The device with the fan registers in it */
 104
 105 /* The device with the IT8718F/IT8720F VID value in it */
 106 #define GPIO    0x07
 107
 108 #define DEVID   0x20    /* Register: Device ID */
 109 #define DEVREV  0x22    /* Register: Device Revision */
 110
 111 static inline void __superio_enter(int ioreg)
 112 {
 113         outb(0x87, ioreg);
 114         outb(0x01, ioreg);
 115         outb(0x55, ioreg);
 116         outb(ioreg == REG_4E ? 0xaa : 0x55, ioreg);
 117 }
 118
 119 static inline int superio_inb(int ioreg, int reg)
 120 {
 121         int val;
 122
 123         outb(reg, ioreg);
 124         val = inb(ioreg + 1);
 125         if (it87_sio4e_broken && ioreg == 0x4e && val == 0xff) {
 126                 __superio_enter(ioreg);
 127                 outb(reg, ioreg);
 128                 val = inb(ioreg + 1);
 129                 pr_warn("Retry access 0x4e:0x%x -> 0x%x\n", reg, val);
 130         }
 131
 132         return val;
 133 }
 134
 135 static inline void superio_outb(int ioreg, int reg, int val)
 136 {
 137         outb(reg, ioreg);
 138         outb(val, ioreg + 1);
 139 }
 140
 141 static int superio_inw(int ioreg, int reg)
 142 {
 143         return (superio_inb(ioreg, reg) << 8) | superio_inb(ioreg, reg + 1);
 144 }
 145
 146 static inline void superio_select(int ioreg, int ldn)
 147 {
 148         outb(DEV, ioreg);
 149         outb(ldn, ioreg + 1);
 150 }
 151
 152 static inline int superio_enter(int ioreg)
 153 {
 154 #ifdef __IT87_USE_ACPI_MUTEX
 155         if (it87_acpi_sio_mutex) {
 156                 acpi_status status;
 157
 158                 status = acpi_acquire_mutex(NULL, it87_acpi_sio_mutex, 0x10);
 159                 if (ACPI_FAILURE(status)) {
 160                         pr_err("Failed to acquire ACPI mutex\n");
 161                         return -EBUSY;
 162                 }
 163         }
 164 #endif
 165         /*
 166          * Try to reserve ioreg and ioreg + 1 for exclusive access.
 167          */
 168         if (!request_muxed_region(ioreg, 2, DRVNAME))
 169                 goto error;
 170
 171         __superio_enter(ioreg);
 172         return 0;
 173
 174 error:
 175 #ifdef __IT87_USE_ACPI_MUTEX
 176         if (it87_acpi_sio_mutex)
 177                 acpi_release_mutex(it87_acpi_sio_handle, NULL);
 178 #endif
 179         return -EBUSY;
 180 }
 181
 182 static inline void superio_exit(int ioreg)
 183 {
 184         if (!it87_sio4e_broken || ioreg != 0x4e) {
 185                 outb(0x02, ioreg);
 186                 outb(0x02, ioreg + 1);
 187         }
 188         release_region(ioreg, 2);
 189 #ifdef __IT87_USE_ACPI_MUTEX
 190         if (it87_acpi_sio_mutex)
 191                 acpi_release_mutex(it87_acpi_sio_handle, NULL);
 192 #endif
 193 }
 194
 195 /* Logical device 4 registers */
 196 #define IT8712F_DEVID 0x8712
 197 #define IT8705F_DEVID 0x8705
 198 #define IT8716F_DEVID 0x8716
 199 #define IT8718F_DEVID 0x8718
 200 #define IT8720F_DEVID 0x8720
 201 #define IT8721F_DEVID 0x8721
 202 #define IT8726F_DEVID 0x8726
 203 #define IT8728F_DEVID 0x8728
 204 #define IT8732F_DEVID 0x8732
 205 #define IT8792E_DEVID 0x8733
 206 #define IT8771E_DEVID 0x8771
 207 #define IT8772E_DEVID 0x8772
 208 #define IT8781F_DEVID 0x8781
 209 #define IT8782F_DEVID 0x8782
 210 #define IT8783E_DEVID 0x8783
 211 #define IT8786E_DEVID 0x8786
 212 #define IT8790E_DEVID 0x8790
 213 #define IT8603E_DEVID 0x8603
 214 #define IT8607E_DEVID 0x8607
 215 #define IT8613E_DEVID 0x8613
 216 #define IT8620E_DEVID 0x8620
 217 #define IT8622E_DEVID 0x8622
 218 #define IT8623E_DEVID 0x8623
 219 #define IT8625E_DEVID 0x8625
 220 #define IT8628E_DEVID 0x8628
 221 #define IT8655E_DEVID 0x8655
 222 #define IT8665E_DEVID 0x8665
 223 #define IT8686E_DEVID 0x8686
 224 #define IT87_ACT_REG  0x30
 225 #define IT87_BASE_REG 0x60
 226
 227 /* Logical device 7 registers (IT8712F and later) */
 228 #define IT87_SIO_GPIO1_REG      0x25
 229 #define IT87_SIO_GPIO2_REG      0x26
 230 #define IT87_SIO_GPIO3_REG      0x27
 231 #define IT87_SIO_GPIO4_REG      0x28
 232 #define IT87_SIO_GPIO5_REG      0x29
 233 #define IT87_SIO_GPIO9_REG      0xd3
 234 #define IT87_SIO_PINX1_REG      0x2a    /* Pin selection */
 235 #define IT87_SIO_PINX2_REG      0x2c    /* Pin selection */
 236 #define IT87_SIO_PINX4_REG      0x2d    /* Pin selection */
 237 #define IT87_SIO_SPI_REG        0xef    /* SPI function pin select */
 238 #define IT87_SIO_VID_REG        0xfc    /* VID value */
 239 #define IT87_SIO_BEEP_PIN_REG   0xf6    /* Beep pin mapping */
 240
 241 /* Update battery voltage after every reading if true */
 242 static bool update_vbat;
 243
 244 /* Not all BIOSes properly configure the PWM registers */
 245 static bool fix_pwm_polarity;
 246
 247 /* Many IT87 constants specified below */
 248
 249 /* Length of ISA address segment */
 250 #define IT87_EXTENT 8
 251
 252 /* Length of ISA address segment for Environmental Controller */
 253 #define IT87_EC_EXTENT 2
 254
 255 /* Offset of EC registers from ISA base address */
 256 #define IT87_EC_OFFSET 5
 257
 258 /* Where are the ISA address/data registers relative to the EC base address */
 259 #define IT87_ADDR_REG_OFFSET 0
 260 #define IT87_DATA_REG_OFFSET 1
 261
 262 /*----- The IT87 registers -----*/
 263
 264 #define IT87_REG_CONFIG        0x00
 265
 266 #define IT87_REG_ALARM1        0x01
 267 #define IT87_REG_ALARM2        0x02
 268 #define IT87_REG_ALARM3        0x03
 269
 270 #define IT87_REG_BANK           0x06
 271
 272 /*
 273  * The IT8718F and IT8720F have the VID value in a different register, in
 274  * Super-I/O configuration space.
 275  */
 276 #define IT87_REG_VID           0x0a
 277 /*
 278  * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
 279  * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
 280  * mode.
 281  */
 282 #define IT87_REG_FAN_DIV       0x0b
 283 #define IT87_REG_FAN_16BIT     0x0c
 284
 285 /*
 286  * Monitors:
 287  * - up to 13 voltage (0 to 7, battery, avcc, 10 to 12)
 288  * - up to 6 temp (1 to 6)
 289  * - up to 6 fan (1 to 6)
 290  */
 291
 292 static const u8 IT87_REG_FAN[] =        { 0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x4c };
 293 static const u8 IT87_REG_FAN_MIN[] =    { 0x10, 0x11, 0x12, 0x84, 0x86, 0x4e };
 294 static const u8 IT87_REG_FANX[] =       { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d };
 295 static const u8 IT87_REG_FANX_MIN[] =   { 0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f };
 296
 297 static const u8 IT87_REG_FAN_8665[] =   { 0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x93 };
 298 static const u8 IT87_REG_FAN_MIN_8665[] =
 299                                         { 0x10, 0x11, 0x12, 0x84, 0x86, 0xb2 };
 300 static const u8 IT87_REG_FANX_8665[] =  { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x94 };
 301 static const u8 IT87_REG_FANX_MIN_8665[] =
 302                                         { 0x1b, 0x1c, 0x1d, 0x85, 0x87, 0xb3 };
 303
 304 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59, 0x5a, 0x90, 0x91 };
 305
 306 static const u8 IT87_REG_TEMP_OFFSET_8686[] = { 0x56, 0x57, 0x59, 0x90, 0x91, 0x92 };
 307
 308 #define IT87_REG_FAN_MAIN_CTRL 0x13
 309 #define IT87_REG_FAN_CTL       0x14
 310
 311 static const u8 IT87_REG_PWM[] =        { 0x15, 0x16, 0x17, 0x7f, 0xa7, 0xaf };
 312 static const u8 IT87_REG_PWM_8665[] =   { 0x15, 0x16, 0x17, 0x1e, 0x1f, 0x92 };
 313
 314 static const u8 IT87_REG_PWM_DUTY[] =   { 0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab };
 315
 316 static const u8 IT87_REG_VIN[]  = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
 317                                     0x27, 0x28, 0x2f, 0x2c, 0x2d, 0x2e };
 318
 319 #define IT87_REG_TEMP(nr)      (0x29 + (nr))
 320
 321 #define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 322 #define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 323
 324 static const u8 IT87_REG_TEMP_HIGH[] =  { 0x40, 0x42, 0x44, 0x46, 0xb4, 0xb6 };
 325 static const u8 IT87_REG_TEMP_LOW[] =   { 0x41, 0x43, 0x45, 0x47, 0xb5, 0xb7 };
 326
 327 static const u8 IT87_REG_TEMP_HIGH_8686[] =
 328                                         { 0x40, 0x42, 0x44, 0xb4, 0xb6, 0xb8 };
 329 static const u8 IT87_REG_TEMP_LOW_8686[] =
 330                                         { 0x41, 0x43, 0x45, 0xb5, 0xb7, 0xb9 };
 331
 332 #define IT87_REG_VIN_ENABLE    0x50
 333 #define IT87_REG_TEMP_ENABLE   0x51
 334 #define IT87_REG_TEMP_EXTRA    0x55
 335 #define IT87_REG_BEEP_ENABLE   0x5c
 336
 337 #define IT87_REG_CHIPID        0x58
 338
 339 static const u8 IT87_REG_AUTO_BASE[] = { 0x60, 0x68, 0x70, 0x78, 0xa0, 0xa8 };
 340
 341 #define IT87_REG_AUTO_TEMP(nr, i) (IT87_REG_AUTO_BASE[nr] + (i))
 342 #define IT87_REG_AUTO_PWM(nr, i)  (IT87_REG_AUTO_BASE[nr] + 5 + (i))
 343
 344 #define IT87_REG_TEMP456_ENABLE 0x77
 345
 346 static const u16 IT87_REG_TEMP_SRC1[] = { 0x21d, 0x21e, 0x21f };
 347 #define IT87_REG_TEMP_SRC2      0x23d
 348
 349 #define NUM_VIN                 ARRAY_SIZE(IT87_REG_VIN)
 350 #define NUM_VIN_LIMIT           8
 351 #define NUM_TEMP                6
 352 #define NUM_FAN                 ARRAY_SIZE(IT87_REG_FAN)
 353 #define NUM_FAN_DIV             3
 354 #define NUM_PWM                 ARRAY_SIZE(IT87_REG_PWM)
 355 #define NUM_AUTO_PWM            ARRAY_SIZE(IT87_REG_PWM)
 356
 357 struct it87_devices {
 358         const char *name;
 359         const char * const suffix;
 360         u32 features;
 361         u8 num_temp_limit;
 362         u8 peci_mask;
 363         u8 old_peci_mask;
 364 };
 365
 366 #define FEAT_12MV_ADC           BIT(0)
 367 #define FEAT_NEWER_AUTOPWM      BIT(1)
 368 #define FEAT_OLD_AUTOPWM        BIT(2)
 369 #define FEAT_16BIT_FANS         BIT(3)
 370 #define FEAT_TEMP_OFFSET        BIT(4)
 371 #define FEAT_TEMP_PECI          BIT(5)
 372 #define FEAT_TEMP_OLD_PECI      BIT(6)
 373 #define FEAT_FAN16_CONFIG       BIT(7)  /* Need to enable 16-bit fans */
 374 #define FEAT_FIVE_FANS          BIT(8)  /* Supports five fans */
 375 #define FEAT_VID                BIT(9)  /* Set if chip supports VID */
 376 #define FEAT_IN7_INTERNAL       BIT(10) /* Set if in7 is internal */
 377 #define FEAT_SIX_FANS           BIT(11) /* Supports six fans */
 378 #define FEAT_10_9MV_ADC         BIT(12)
 379 #define FEAT_AVCC3              BIT(13) /* Chip supports in9/AVCC3 */
 380 #define FEAT_FIVE_PWM           BIT(14) /* Chip supports 5 pwm chn */
 381 #define FEAT_SIX_PWM            BIT(15) /* Chip supports 6 pwm chn */
 382 #define FEAT_PWM_FREQ2          BIT(16) /* Separate pwm freq 2 */
 383 #define FEAT_SIX_TEMP           BIT(17) /* Up to 6 temp sensors */
 384 #define FEAT_VIN3_5V            BIT(18) /* VIN3 connected to +5V */
 385 #define FEAT_FOUR_FANS          BIT(19) /* Supports four fans */
 386 #define FEAT_FOUR_PWM           BIT(20) /* Supports four fan controls */
 387 #define FEAT_BANK_SEL           BIT(21) /* Chip has multi-bank support */
 388 #define FEAT_SCALING            BIT(22) /* Internal voltage scaling */
 389 #define FEAT_FANCTL_ONOFF       BIT(23) /* chip has FAN_CTL ON/OFF */
 390 #define FEAT_11MV_ADC           BIT(24)
 391 #define FEAT_NEW_TEMPMAP        BIT(25) /* new temp input selection */
 392
 393 static const struct it87_devices it87_devices[] = {
 394         [it87] = {
 395                 .name = "it87",
 396                 .suffix = "F",
 397                 .features = FEAT_OLD_AUTOPWM | FEAT_FANCTL_ONOFF,
 398                                                 /* may need to overwrite */
 399                 .num_temp_limit = 3,
 400         },
 401         [it8712] = {
 402                 .name = "it8712",
 403                 .suffix = "F",
 404                 .features = FEAT_OLD_AUTOPWM | FEAT_VID | FEAT_FANCTL_ONOFF,
 405                                                 /* may need to overwrite */
 406                 .num_temp_limit = 3,
 407         },
 408         [it8716] = {
 409                 .name = "it8716",
 410                 .suffix = "F",
 411                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 412                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_PWM_FREQ2
 413                   | FEAT_FANCTL_ONOFF,
 414                 .num_temp_limit = 3,
 415         },
 416         [it8718] = {
 417                 .name = "it8718",
 418                 .suffix = "F",
 419                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 420                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
 421                   | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
 422                 .num_temp_limit = 3,
 423                 .old_peci_mask = 0x4,
 424         },
 425         [it8720] = {
 426                 .name = "it8720",
 427                 .suffix = "F",
 428                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 429                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
 430                   | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
 431                 .num_temp_limit = 3,
 432                 .old_peci_mask = 0x4,
 433         },
 434         [it8721] = {
 435                 .name = "it8721",
 436                 .suffix = "F",
 437                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 438                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 439                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_IN7_INTERNAL
 440                   | FEAT_PWM_FREQ2 | FEAT_SCALING | FEAT_FANCTL_ONOFF,
 441                 .num_temp_limit = 3,
 442                 .peci_mask = 0x05,
 443                 .old_peci_mask = 0x02,  /* Actually reports PCH */
 444         },
 445         [it8728] = {
 446                 .name = "it8728",
 447                 .suffix = "F",
 448                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 449                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
 450                   | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2 | FEAT_SCALING
 451                   | FEAT_FANCTL_ONOFF,
 452                 .num_temp_limit = 3,
 453                 .peci_mask = 0x07,
 454         },
 455         [it8732] = {
 456                 .name = "it8732",
 457                 .suffix = "F",
 458                 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
 459                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 460                   | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_FOUR_FANS
 461                   | FEAT_FOUR_PWM | FEAT_FANCTL_ONOFF,
 462                 .num_temp_limit = 3,
 463                 .peci_mask = 0x07,
 464                 .old_peci_mask = 0x02,  /* Actually reports PCH */
 465         },
 466         [it8771] = {
 467                 .name = "it8771",
 468                 .suffix = "E",
 469                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 470                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 471                   | FEAT_PWM_FREQ2 | FEAT_SCALING | FEAT_FANCTL_ONOFF,
 472                                 /* PECI: guesswork */
 473                                 /* 12mV ADC (OHM) */
 474                                 /* 16 bit fans (OHM) */
 475                                 /* three fans, always 16 bit (guesswork) */
 476                 .num_temp_limit = 3,
 477                 .peci_mask = 0x07,
 478         },
 479         [it8772] = {
 480                 .name = "it8772",
 481                 .suffix = "E",
 482                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 483                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 484                   | FEAT_PWM_FREQ2 | FEAT_SCALING | FEAT_FANCTL_ONOFF,
 485                                 /* PECI (coreboot) */
 486                                 /* 12mV ADC (HWSensors4, OHM) */
 487                                 /* 16 bit fans (HWSensors4, OHM) */
 488                                 /* three fans, always 16 bit (datasheet) */
 489                 .num_temp_limit = 3,
 490                 .peci_mask = 0x07,
 491         },
 492         [it8781] = {
 493                 .name = "it8781",
 494                 .suffix = "F",
 495                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 496                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2
 497                   | FEAT_FANCTL_ONOFF,
 498                 .num_temp_limit = 3,
 499                 .old_peci_mask = 0x4,
 500         },
 501         [it8782] = {
 502                 .name = "it8782",
 503                 .suffix = "F",
 504                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 505                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2
 506                   | FEAT_FANCTL_ONOFF,
 507                 .num_temp_limit = 3,
 508                 .old_peci_mask = 0x4,
 509         },
 510         [it8783] = {
 511                 .name = "it8783",
 512                 .suffix = "E/F",
 513                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 514                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2
 515                   | FEAT_FANCTL_ONOFF,
 516                 .num_temp_limit = 3,
 517                 .old_peci_mask = 0x4,
 518         },
 519         [it8786] = {
 520                 .name = "it8786",
 521                 .suffix = "E",
 522                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 523                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 524                   | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
 525                 .num_temp_limit = 3,
 526                 .peci_mask = 0x07,
 527         },
 528         [it8790] = {
 529                 .name = "it8790",
 530                 .suffix = "E",
 531                 .features = FEAT_NEWER_AUTOPWM | FEAT_10_9MV_ADC | FEAT_SCALING
 532                   | FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI
 533                   | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
 534                 .num_temp_limit = 3,
 535                 .peci_mask = 0x07,
 536         },
 537         [it8792] = {
 538                 .name = "it8792",
 539                 .suffix = "E",
 540                 .features = FEAT_NEWER_AUTOPWM | FEAT_10_9MV_ADC | FEAT_SCALING
 541                   | FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI
 542                   | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
 543                 .num_temp_limit = 3,
 544                 .peci_mask = 0x07,
 545         },
 546         [it8603] = {
 547                 .name = "it8603",
 548                 .suffix = "E",
 549                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 550                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 551                   | FEAT_AVCC3 | FEAT_PWM_FREQ2 | FEAT_SCALING,
 552                 .num_temp_limit = 3,
 553                 .peci_mask = 0x07,
 554         },
 555         [it8607] = {
 556                 .name = "it8607",
 557                 .suffix = "E",
 558                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 559                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 560                   | FEAT_AVCC3 | FEAT_PWM_FREQ2 | FEAT_SCALING
 561                   | FEAT_FANCTL_ONOFF,
 562                 .num_temp_limit = 3,
 563                 .peci_mask = 0x07,
 564         },
 565         [it8613] = {
 566                 .name = "it8613",
 567                 .suffix = "E",
 568                 .features = FEAT_NEWER_AUTOPWM | FEAT_11MV_ADC | FEAT_16BIT_FANS
 569                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
 570                   | FEAT_FIVE_PWM | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
 571                   | FEAT_AVCC3 | FEAT_SCALING | FEAT_NEW_TEMPMAP,
 572                 .num_temp_limit = 6,
 573                 .peci_mask = 0x07,
 574         },
 575         [it8620] = {
 576                 .name = "it8620",
 577                 .suffix = "E",
 578                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 579                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
 580                   | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
 581                   | FEAT_SIX_TEMP | FEAT_VIN3_5V | FEAT_SCALING
 582                   | FEAT_FANCTL_ONOFF,
 583                 .num_temp_limit = 3,
 584                 .peci_mask = 0x07,
 585         },
 586         [it8622] = {
 587                 .name = "it8622",
 588                 .suffix = "E",
 589                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 590                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
 591                   | FEAT_FIVE_PWM | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
 592                   | FEAT_AVCC3 | FEAT_VIN3_5V | FEAT_SCALING,
 593                 .num_temp_limit = 3,
 594                 .peci_mask = 0x07,
 595         },
 596         [it8625] = {
 597                 .name = "it8625",
 598                 .suffix = "E",
 599                 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
 600                   | FEAT_TEMP_OFFSET | FEAT_AVCC3 | FEAT_NEW_TEMPMAP
 601                   | FEAT_11MV_ADC | FEAT_IN7_INTERNAL | FEAT_SIX_FANS
 602                   | FEAT_SIX_PWM | FEAT_BANK_SEL,
 603                 .num_temp_limit = 6,
 604         },
 605         [it8628] = {
 606                 .name = "it8628",
 607                 .suffix = "E",
 608                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 609                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
 610                   | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
 611                   | FEAT_SIX_TEMP | FEAT_SCALING | FEAT_AVCC3
 612                   | FEAT_FANCTL_ONOFF,
 613                 .num_temp_limit = 3,
 614                 .peci_mask = 0x07,
 615         },
 616         [it8655] = {
 617                 .name = "it8655",
 618                 .suffix = "E",
 619                 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
 620                   | FEAT_TEMP_OFFSET | FEAT_AVCC3 | FEAT_NEW_TEMPMAP
 621                   | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_BANK_SEL,
 622                 .num_temp_limit = 6,
 623         },
 624         [it8665] = {
 625                 .name = "it8665",
 626                 .suffix = "E",
 627                 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
 628                   | FEAT_TEMP_OFFSET | FEAT_AVCC3 | FEAT_NEW_TEMPMAP
 629                   | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_SIX_FANS
 630                   | FEAT_SIX_PWM | FEAT_BANK_SEL,
 631                 .num_temp_limit = 6,
 632         },
 633         [it8686] = {
 634                 .name = "it8686",
 635                 .suffix = "E",
 636                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 637                   | FEAT_TEMP_OFFSET | FEAT_SIX_FANS | FEAT_NEW_TEMPMAP
 638                   | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
 639                   | FEAT_SIX_TEMP | FEAT_BANK_SEL | FEAT_SCALING | FEAT_AVCC3,
 640                 .num_temp_limit = 6,
 641         },
 642 };
 643
 644 #define has_16bit_fans(data)    ((data)->features & FEAT_16BIT_FANS)
 645 #define has_12mv_adc(data)      ((data)->features & FEAT_12MV_ADC)
 646 #define has_10_9mv_adc(data)    ((data)->features & FEAT_10_9MV_ADC)
 647 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
 648 #define has_old_autopwm(data)   ((data)->features & FEAT_OLD_AUTOPWM)
 649 #define has_temp_offset(data)   ((data)->features & FEAT_TEMP_OFFSET)
 650 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
 651                                  ((data)->peci_mask & BIT(nr)))
 652 #define has_temp_old_peci(data, nr) \
 653                                 (((data)->features & FEAT_TEMP_OLD_PECI) && \
 654                                  ((data)->old_peci_mask & BIT(nr)))
 655 #define has_fan16_config(data)  ((data)->features & FEAT_FAN16_CONFIG)
 656 #define has_five_fans(data)     ((data)->features & (FEAT_FIVE_FANS | \
 657                                                      FEAT_SIX_FANS))
 658 #define has_vid(data)           ((data)->features & FEAT_VID)
 659 #define has_in7_internal(data)  ((data)->features & FEAT_IN7_INTERNAL)
 660 #define has_six_fans(data)      ((data)->features & FEAT_SIX_FANS)
 661 #define has_avcc3(data)         ((data)->features & FEAT_AVCC3)
 662 #define has_five_pwm(data)      ((data)->features & (FEAT_FIVE_PWM \
 663                                                      | FEAT_SIX_PWM))
 664 #define has_six_pwm(data)       ((data)->features & FEAT_SIX_PWM)
 665 #define has_pwm_freq2(data)     ((data)->features & FEAT_PWM_FREQ2)
 666 #define has_six_temp(data)      ((data)->features & FEAT_SIX_TEMP)
 667 #define has_vin3_5v(data)       ((data)->features & FEAT_VIN3_5V)
 668 #define has_four_fans(data)     ((data)->features & (FEAT_FOUR_FANS | \
 669                                                      FEAT_FIVE_FANS | \
 670                                                      FEAT_SIX_FANS))
 671 #define has_four_pwm(data)      ((data)->features & (FEAT_FOUR_PWM | \
 672                                                      FEAT_FIVE_PWM \
 673                                                      | FEAT_SIX_PWM))
 674 #define has_bank_sel(data)      ((data)->features & FEAT_BANK_SEL)
 675 #define has_scaling(data)       ((data)->features & FEAT_SCALING)
 676 #define has_fanctl_onoff(data)  ((data)->features & FEAT_FANCTL_ONOFF)
 677 #define has_11mv_adc(data)      ((data)->features & FEAT_11MV_ADC)
 678 #define has_new_tempmap(data)   ((data)->features & FEAT_NEW_TEMPMAP)
 679
 680 struct it87_sio_data {
 681         enum chips type;
 682         /* Values read from Super-I/O config space */
 683         u8 revision;
 684         u8 vid_value;
 685         u8 beep_pin;
 686         u8 internal;    /* Internal sensors can be labeled */
 687         /* Features skipped based on config or DMI */
 688         u16 skip_in;
 689         u8 skip_vid;
 690         u8 skip_fan;
 691         u8 skip_pwm;
 692         u8 skip_temp;
 693 };
 694
 695 /*
 696  * For each registered chip, we need to keep some data in memory.
 697  * The structure is dynamically allocated.
 698  */
 699 struct it87_data {
 700         const struct attribute_group *groups[7];
 701         enum chips type;
 702         u32 features;
 703         u8 bank;
 704         u8 peci_mask;
 705         u8 old_peci_mask;
 706
 707         const u8 *REG_FAN;
 708         const u8 *REG_FANX;
 709         const u8 *REG_FAN_MIN;
 710         const u8 *REG_FANX_MIN;
 711
 712         const u8 *REG_PWM;
 713
 714         const u8 *REG_TEMP_OFFSET;
 715         const u8 *REG_TEMP_LOW;
 716         const u8 *REG_TEMP_HIGH;
 717
 718         unsigned short addr;
 719         const char *name;
 720         struct mutex update_lock;
 721         char valid;             /* !=0 if following fields are valid */
 722         unsigned long last_updated;     /* In jiffies */
 723
 724         u16 in_scaled;          /* Internal voltage sensors are scaled */
 725         u16 in_internal;        /* Bitfield, internal sensors (for labels) */
 726         u16 has_in;             /* Bitfield, voltage sensors enabled */
 727         u8 in[NUM_VIN][3];              /* [nr][0]=in, [1]=min, [2]=max */
 728         u8 has_fan;             /* Bitfield, fans enabled */
 729         u16 fan[NUM_FAN][2];    /* Register values, [nr][0]=fan, [1]=min */
 730         u8 has_temp;            /* Bitfield, temp sensors enabled */
 731         s8 temp[NUM_TEMP][4];   /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 732         u8 num_temp_limit;      /* Number of temp limit/offset registers */
 733         u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
 734         u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
 735         u8 fan_div[NUM_FAN_DIV];/* Register encoding, shifted right */
 736         bool has_vid;           /* True if VID supported */
 737         u8 vid;                 /* Register encoding, combined */
 738         u8 vrm;
 739         u32 alarms;             /* Register encoding, combined */
 740         bool has_beep;          /* true if beep supported */
 741         u8 beeps;               /* Register encoding */
 742         u8 fan_main_ctrl;       /* Register value */
 743         u8 fan_ctl;             /* Register value */
 744
 745         /*
 746          * The following 3 arrays correspond to the same registers up to
 747          * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 748          * 7, and we want to preserve settings on mode changes, so we have
 749          * to track all values separately.
 750          * Starting with the IT8721F, the manual PWM duty cycles are stored
 751          * in separate registers (8-bit values), so the separate tracking
 752          * is no longer needed, but it is still done to keep the driver
 753          * simple.
 754          */
 755         u8 has_pwm;             /* Bitfield, pwm control enabled */
 756         u8 pwm_ctrl[NUM_PWM];   /* Register value */
 757         u8 pwm_duty[NUM_PWM];   /* Manual PWM value set by user */
 758         u8 pwm_temp_map[NUM_PWM];/* PWM to temp. chan. mapping (bits 1-0) */
 759
 760         /* Automatic fan speed control registers */
 761         u8 auto_pwm[NUM_AUTO_PWM][4];   /* [nr][3] is hard-coded */
 762         s8 auto_temp[NUM_AUTO_PWM][5];  /* [nr][0] is point1_temp_hyst */
 763 };
 764
 765 static int adc_lsb(const struct it87_data *data, int nr)
 766 {
 767         int lsb;
 768
 769         if (has_12mv_adc(data))
 770                 lsb = 120;
 771         else if (has_10_9mv_adc(data))
 772                 lsb = 109;
 773         else if (has_11mv_adc(data))
 774                 lsb = 110;
 775         else
 776                 lsb = 160;
 777         if (data->in_scaled & BIT(nr))
 778                 lsb <<= 1;
 779         return lsb;
 780 }
 781
 782 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 783 {
 784         val = DIV_ROUND_CLOSEST(val * 10, adc_lsb(data, nr));
 785         return clamp_val(val, 0, 255);
 786 }
 787
 788 static int in_from_reg(const struct it87_data *data, int nr, int val)
 789 {
 790         return DIV_ROUND_CLOSEST(val * adc_lsb(data, nr), 10);
 791 }
 792
 793 static inline u8 FAN_TO_REG(long rpm, int div)
 794 {
 795         if (rpm == 0)
 796                 return 255;
 797         rpm = clamp_val(rpm, 1, 1000000);
 798         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 799 }
 800
 801 static inline u16 FAN16_TO_REG(long rpm)
 802 {
 803         if (rpm == 0)
 804                 return 0xffff;
 805         return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 806 }
 807
 808 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 809                                 1350000 / ((val) * (div)))
 810 /* The divider is fixed to 2 in 16-bit mode */
 811 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 812                              1350000 / ((val) * 2))
 813
 814 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
 815                                     ((val) + 500) / 1000), -128, 127))
 816 #define TEMP_FROM_REG(val) ((val) * 1000)
 817
 818 static u8 pwm_to_reg(const struct it87_data *data, long val)
 819 {
 820         if (has_newer_autopwm(data))
 821                 return val;
 822         else
 823                 return val >> 1;
 824 }
 825
 826 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 827 {
 828         if (has_newer_autopwm(data))
 829                 return reg;
 830         else
 831                 return (reg & 0x7f) << 1;
 832 }
 833
 834 static int DIV_TO_REG(int val)
 835 {
 836         int answer = 0;
 837
 838         while (answer < 7 && (val >>= 1))
 839                 answer++;
 840         return answer;
 841 }
 842
 843 #define DIV_FROM_REG(val) BIT(val)
 844
 845 /*
 846  * PWM base frequencies. The frequency has to be divided by either 128 or 256,
 847  * depending on the chip type, to calculate the actual PWM frequency.
 848  *
 849  * Some of the chip datasheets suggest a base frequency of 51 kHz instead
 850  * of 750 kHz for the slowest base frequency, resulting in a PWM frequency
 851  * of 200 Hz. Sometimes both PWM frequency select registers are affected,
 852  * sometimes just one. It is unknown if this is a datasheet error or real,
 853  * so this is ignored for now.
 854  */
 855 static const unsigned int pwm_freq[8] = {
 856         48000000,
 857         24000000,
 858         12000000,
 859         8000000,
 860         6000000,
 861         3000000,
 862         1500000,
 863         750000,
 864 };
 865
 866 static int _it87_read_value(struct it87_data *data, u8 reg)
 867 {
 868         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
 869         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
 870 }
 871
 872 static void _it87_write_value(struct it87_data *data, u8 reg, u8 value)
 873 {
 874         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
 875         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
 876 }
 877
 878 static void it87_set_bank(struct it87_data *data, u8 bank)
 879 {
 880         if (has_bank_sel(data) && bank != data->bank) {
 881                 u8 breg = _it87_read_value(data, IT87_REG_BANK);
 882
 883                 breg &= 0x1f;
 884                 breg |= (bank << 5);
 885                 data->bank = bank;
 886                 _it87_write_value(data, IT87_REG_BANK, breg);
 887         }
 888 }
 889
 890 /*
 891  * Must be called with data->update_lock held, except during initialization.
 892  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
 893  * would slow down the IT87 access and should not be necessary.
 894  */
 895 static int it87_read_value(struct it87_data *data, u16 reg)
 896 {
 897         it87_set_bank(data, reg >> 8);
 898         return _it87_read_value(data, reg & 0xff);
 899 }
 900
 901 /*
 902  * Must be called with data->update_lock held, except during initialization.
 903  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
 904  * would slow down the IT87 access and should not be necessary.
 905  */
 906 static void it87_write_value(struct it87_data *data, u16 reg, u8 value)
 907 {
 908         it87_set_bank(data, reg >> 8);
 909         _it87_write_value(data, reg & 0xff, value);
 910 }
 911
 912 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
 913 {
 914         data->pwm_ctrl[nr] = it87_read_value(data, data->REG_PWM[nr]);
 915         if (has_newer_autopwm(data)) {
 916                 if (has_new_tempmap(data))
 917                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x38;
 918                 else
 919                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
 920                 data->pwm_duty[nr] = it87_read_value(data,
 921                                                      IT87_REG_PWM_DUTY[nr]);
 922         } else {
 923                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
 924                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
 925                 else                            /* Manual mode */
 926                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
 927         }
 928
 929         if (has_old_autopwm(data)) {
 930                 int i;
 931
 932                 for (i = 0; i < 5 ; i++)
 933                         data->auto_temp[nr][i] = it87_read_value(data,
 934                                                 IT87_REG_AUTO_TEMP(nr, i));
 935                 for (i = 0; i < 3 ; i++)
 936                         data->auto_pwm[nr][i] = it87_read_value(data,
 937                                                 IT87_REG_AUTO_PWM(nr, i));
 938         } else if (has_newer_autopwm(data)) {
 939                 int i;
 940
 941                 /*
 942                  * 0: temperature hysteresis (base + 5)
 943                  * 1: fan off temperature (base + 0)
 944                  * 2: fan start temperature (base + 1)
 945                  * 3: fan max temperature (base + 2)
 946                  */
 947                 data->auto_temp[nr][0] =
 948                         it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 5));
 949
 950                 for (i = 0; i < 3 ; i++)
 951                         data->auto_temp[nr][i + 1] =
 952                                 it87_read_value(data,
 953                                                 IT87_REG_AUTO_TEMP(nr, i));
 954                 /*
 955                  * 0: start pwm value (base + 3)
 956                  * 1: pwm slope (base + 4, 1/8th pwm)
 957                  */
 958                 data->auto_pwm[nr][0] =
 959                         it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 3));
 960                 data->auto_pwm[nr][1] =
 961                         it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 4));
 962         }
 963 }
 964
 965 static struct it87_data *it87_update_device(struct device *dev)
 966 {
 967         struct it87_data *data = dev_get_drvdata(dev);
 968         int i;
 969
 970         mutex_lock(&data->update_lock);
 971
 972         if (time_after(jiffies, data->last_updated + HZ + HZ / 2) ||
 973             !data->valid) {
 974                 if (update_vbat) {
 975                         /*
 976                          * Cleared after each update, so reenable.  Value
 977                          * returned by this read will be previous value
 978                          */
 979                         it87_write_value(data, IT87_REG_CONFIG,
 980                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
 981                 }
 982                 for (i = 0; i < NUM_VIN; i++) {
 983                         if (!(data->has_in & BIT(i)))
 984                                 continue;
 985
 986                         data->in[i][0] =
 987                                 it87_read_value(data, IT87_REG_VIN[i]);
 988
 989                         /* VBAT and AVCC don't have limit registers */
 990                         if (i >= NUM_VIN_LIMIT)
 991                                 continue;
 992
 993                         data->in[i][1] =
 994                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
 995                         data->in[i][2] =
 996                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
 997                 }
 998
 999                 for (i = 0; i < NUM_FAN; i++) {
1000                         /* Skip disabled fans */
1001                         if (!(data->has_fan & BIT(i)))
1002                                 continue;
1003
1004                         data->fan[i][1] =
1005                                 it87_read_value(data, data->REG_FAN_MIN[i]);
1006                         data->fan[i][0] = it87_read_value(data,
1007                                        data->REG_FAN[i]);
1008                         /* Add high byte if in 16-bit mode */
1009                         if (has_16bit_fans(data)) {
1010                                 data->fan[i][0] |= it87_read_value(data,
1011                                                 data->REG_FANX[i]) << 8;
1012                                 data->fan[i][1] |= it87_read_value(data,
1013                                                 data->REG_FANX_MIN[i]) << 8;
1014                         }
1015                 }
1016                 for (i = 0; i < NUM_TEMP; i++) {
1017                         if (!(data->has_temp & BIT(i)))
1018                                 continue;
1019                         data->temp[i][0] =
1020                                 it87_read_value(data, IT87_REG_TEMP(i));
1021
1022                         if (i >= data->num_temp_limit)
1023                                 continue;
1024
1025                         if (has_temp_offset(data))
1026                                 data->temp[i][3] =
1027                                   it87_read_value(data,
1028                                                   data->REG_TEMP_OFFSET[i]);
1029
1030                         data->temp[i][1] =
1031                                 it87_read_value(data, data->REG_TEMP_LOW[i]);
1032                         data->temp[i][2] =
1033                                 it87_read_value(data, data->REG_TEMP_HIGH[i]);
1034                 }
1035
1036                 /* Newer chips don't have clock dividers */
1037                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
1038                         i = it87_read_value(data, IT87_REG_FAN_DIV);
1039                         data->fan_div[0] = i & 0x07;
1040                         data->fan_div[1] = (i >> 3) & 0x07;
1041                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
1042                 }
1043
1044                 data->alarms =
1045                         it87_read_value(data, IT87_REG_ALARM1) |
1046                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
1047                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
1048                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1049
1050                 data->fan_main_ctrl = it87_read_value(data,
1051                                 IT87_REG_FAN_MAIN_CTRL);
1052                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
1053                 for (i = 0; i < NUM_PWM; i++) {
1054                         if (!(data->has_pwm & BIT(i)))
1055                                 continue;
1056                         it87_update_pwm_ctrl(data, i);
1057                 }
1058
1059                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
1060                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
1061                 /*
1062                  * The IT8705F does not have VID capability.
1063                  * The IT8718F and later don't use IT87_REG_VID for the
1064                  * same purpose.
1065                  */
1066                 if (data->type == it8712 || data->type == it8716) {
1067                         data->vid = it87_read_value(data, IT87_REG_VID);
1068                         /*
1069                          * The older IT8712F revisions had only 5 VID pins,
1070                          * but we assume it is always safe to read 6 bits.
1071                          */
1072                         data->vid &= 0x3f;
1073                 }
1074                 data->last_updated = jiffies;
1075                 data->valid = 1;
1076         }
1077
1078         mutex_unlock(&data->update_lock);
1079
1080         return data;
1081 }
1082
1083 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
1084                        char *buf)
1085 {
1086         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1087         struct it87_data *data = it87_update_device(dev);
1088         int index = sattr->index;
1089         int nr = sattr->nr;
1090
1091         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
1092 }
1093
1094 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
1095                       const char *buf, size_t count)
1096 {
1097         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1098         struct it87_data *data = dev_get_drvdata(dev);
1099         int index = sattr->index;
1100         int nr = sattr->nr;
1101         unsigned long val;
1102
1103         if (kstrtoul(buf, 10, &val) < 0)
1104                 return -EINVAL;
1105
1106         mutex_lock(&data->update_lock);
1107         data->in[nr][index] = in_to_reg(data, nr, val);
1108         it87_write_value(data,
1109                          index == 1 ? IT87_REG_VIN_MIN(nr)
1110                                     : IT87_REG_VIN_MAX(nr),
1111                          data->in[nr][index]);
1112         mutex_unlock(&data->update_lock);
1113         return count;
1114 }
1115
1116 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
1117 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
1118                             0, 1);
1119 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
1120                             0, 2);
1121
1122 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
1123 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
1124                             1, 1);
1125 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
1126                             1, 2);
1127
1128 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
1129 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
1130                             2, 1);
1131 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
1132                             2, 2);
1133
1134 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
1135 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
1136                             3, 1);
1137 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
1138                             3, 2);
1139
1140 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
1141 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
1142                             4, 1);
1143 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
1144                             4, 2);
1145
1146 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
1147 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
1148                             5, 1);
1149 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
1150                             5, 2);
1151
1152 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
1153 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
1154                             6, 1);
1155 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
1156                             6, 2);
1157
1158 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
1159 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
1160                             7, 1);
1161 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
1162                             7, 2);
1163
1164 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
1165 static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
1166 static SENSOR_DEVICE_ATTR_2(in10_input, S_IRUGO, show_in, NULL, 10, 0);
1167 static SENSOR_DEVICE_ATTR_2(in11_input, S_IRUGO, show_in, NULL, 11, 0);
1168 static SENSOR_DEVICE_ATTR_2(in12_input, S_IRUGO, show_in, NULL, 12, 0);
1169
1170 /* Up to 6 temperatures */
1171 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
1172                          char *buf)
1173 {
1174         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1175         int nr = sattr->nr;
1176         int index = sattr->index;
1177         struct it87_data *data = it87_update_device(dev);
1178
1179         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
1180 }
1181
1182 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
1183                         const char *buf, size_t count)
1184 {
1185         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1186         int nr = sattr->nr;
1187         int index = sattr->index;
1188         struct it87_data *data = dev_get_drvdata(dev);
1189         long val;
1190         u8 reg, regval;
1191
1192         if (kstrtol(buf, 10, &val) < 0)
1193                 return -EINVAL;
1194
1195         mutex_lock(&data->update_lock);
1196
1197         switch (index) {
1198         default:
1199         case 1:
1200                 reg = data->REG_TEMP_LOW[nr];
1201                 break;
1202         case 2:
1203                 reg = data->REG_TEMP_HIGH[nr];
1204                 break;
1205         case 3:
1206                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1207                 if (!(regval & 0x80)) {
1208                         regval |= 0x80;
1209                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
1210                 }
1211                 data->valid = 0;
1212                 reg = data->REG_TEMP_OFFSET[nr];
1213                 break;
1214         }
1215
1216         data->temp[nr][index] = TEMP_TO_REG(val);
1217         it87_write_value(data, reg, data->temp[nr][index]);
1218         mutex_unlock(&data->update_lock);
1219         return count;
1220 }
1221
1222 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
1223 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1224                             0, 1);
1225 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1226                             0, 2);
1227 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1228                             set_temp, 0, 3);
1229 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
1230 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1231                             1, 1);
1232 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1233                             1, 2);
1234 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1235                             set_temp, 1, 3);
1236 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
1237 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1238                             2, 1);
1239 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1240                             2, 2);
1241 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1242                             set_temp, 2, 3);
1243 static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, 0);
1244 static SENSOR_DEVICE_ATTR_2(temp4_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1245                             3, 1);
1246 static SENSOR_DEVICE_ATTR_2(temp4_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1247                             3, 2);
1248 static SENSOR_DEVICE_ATTR_2(temp4_offset, S_IRUGO | S_IWUSR, show_temp,
1249                             set_temp, 3, 3);
1250 static SENSOR_DEVICE_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, 0);
1251 static SENSOR_DEVICE_ATTR_2(temp5_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1252                             4, 1);
1253 static SENSOR_DEVICE_ATTR_2(temp5_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1254                             4, 2);
1255 static SENSOR_DEVICE_ATTR_2(temp5_offset, S_IRUGO | S_IWUSR, show_temp,
1256                             set_temp, 4, 3);
1257 static SENSOR_DEVICE_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, 0);
1258 static SENSOR_DEVICE_ATTR_2(temp6_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1259                             5, 1);
1260 static SENSOR_DEVICE_ATTR_2(temp6_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1261                             5, 2);
1262 static SENSOR_DEVICE_ATTR_2(temp6_offset, S_IRUGO | S_IWUSR, show_temp,
1263                             set_temp, 5, 3);
1264
1265 static int get_temp_type(struct it87_data *data, int index)
1266 {
1267         u8 reg, extra;
1268         int type = 0;
1269
1270         if (has_bank_sel(data)) {
1271                 int s1reg = IT87_REG_TEMP_SRC1[index/2] >> ((index % 2) * 4);
1272                 u8 src1, src2;
1273
1274                 src1 = (it87_read_value(data, s1reg) >> ((index % 2) * 4)) & 0x0f;
1275                 src2 = it87_read_value(data, IT87_REG_TEMP_SRC2);
1276
1277                 switch (data->type) {
1278                 case it8686:
1279                         switch (src1) {
1280                         case 0:
1281                                 if (index >= 3)
1282                                         return 4;
1283                                 break;
1284                         case 1:
1285                                 if (index == 1 || index == 2 ||
1286                                           index == 4 || index == 5)
1287                                         return 6;
1288                                 break;
1289                         case 2:
1290                                 if (index == 2 || index == 6)
1291                                         return 5;
1292                                 break;
1293                         default:
1294                                 break;
1295                         }
1296                         break;
1297                 case it8625:
1298                 case it8655:
1299                 case it8665:
1300                         if (src1 < 3) {
1301                                 index = src1;
1302                                 break;
1303                         }
1304                         switch(src1) {
1305                         case 3:
1306                                 type = (src2 & BIT(index)) ? 6 : 5;
1307                                 break;
1308                         case 4 ... 8:
1309                                 type = (src2 & BIT(index)) ? 4 : 6;
1310                                 break;
1311                         case 9:
1312                                 type = (src2 & BIT(index)) ? 5 : 0;
1313                                 break;
1314                         default:
1315                                 break;
1316                         }
1317                         return type;
1318                 default:
1319                         return 0;
1320                 }
1321         }
1322         if (index >= 3)
1323                 return 0;
1324
1325         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
1326         extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
1327
1328         if ((has_temp_peci(data, index) && (reg >> 6 == index + 1)) ||
1329             (has_temp_old_peci(data, index) && (extra & 0x80)))
1330                 type = 6;               /* Intel PECI */
1331         if (reg & BIT(index))
1332                 type = 3;               /* thermal diode */
1333         else if (reg & BIT(index + 3))
1334                 type = 4;               /* thermistor */
1335
1336         return type;
1337 }
1338
1339 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
1340                               char *buf)
1341 {
1342         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1343         struct it87_data *data = it87_update_device(dev);
1344         int type = get_temp_type(data, sensor_attr->index);
1345
1346         return sprintf(buf, "%d\n", type);
1347 }
1348
1349 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
1350                              const char *buf, size_t count)
1351 {
1352         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1353         int nr = sensor_attr->index;
1354
1355         struct it87_data *data = dev_get_drvdata(dev);
1356         long val;
1357         u8 reg, extra;
1358
1359         if (kstrtol(buf, 10, &val) < 0)
1360                 return -EINVAL;
1361
1362         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
1363         reg &= ~(1 << nr);
1364         reg &= ~(8 << nr);
1365         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
1366                 reg &= 0x3f;
1367         extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
1368         if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
1369                 extra &= 0x7f;
1370         if (val == 2) { /* backwards compatibility */
1371                 dev_warn(dev,
1372                          "Sensor type 2 is deprecated, please use 4 instead\n");
1373                 val = 4;
1374         }
1375         /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
1376         if (val == 3)
1377                 reg |= 1 << nr;
1378         else if (val == 4)
1379                 reg |= 8 << nr;
1380         else if (has_temp_peci(data, nr) && val == 6)
1381                 reg |= (nr + 1) << 6;
1382         else if (has_temp_old_peci(data, nr) && val == 6)
1383                 extra |= 0x80;
1384         else if (val != 0)
1385                 return -EINVAL;
1386
1387         mutex_lock(&data->update_lock);
1388         data->sensor = reg;
1389         data->extra = extra;
1390         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
1391         if (has_temp_old_peci(data, nr))
1392                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1393         data->valid = 0;        /* Force cache refresh */
1394         mutex_unlock(&data->update_lock);
1395         return count;
1396 }
1397
1398 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
1399                           set_temp_type, 0);
1400 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
1401                           set_temp_type, 1);
1402 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
1403                           set_temp_type, 2);
1404 static SENSOR_DEVICE_ATTR(temp4_type, S_IRUGO | S_IWUSR, show_temp_type,
1405                           set_temp_type, 3);
1406 static SENSOR_DEVICE_ATTR(temp5_type, S_IRUGO | S_IWUSR, show_temp_type,
1407                           set_temp_type, 4);
1408 static SENSOR_DEVICE_ATTR(temp6_type, S_IRUGO | S_IWUSR, show_temp_type,
1409                           set_temp_type, 5);
1410
1411 /* 6 Fans */
1412
1413 static int pwm_mode(const struct it87_data *data, int nr)
1414 {
1415         if (has_fanctl_onoff(data) && nr < 3 &&
1416             !(data->fan_main_ctrl & BIT(nr)))
1417                 return 0;                               /* Full speed */
1418         if (data->pwm_ctrl[nr] & 0x80)
1419                 return 2;                               /* Automatic mode */
1420         if ((!has_fanctl_onoff(data) || nr >= 3) &&
1421             data->pwm_duty[nr] == pwm_to_reg(data, 0xff))
1422                 return 0;                       /* Full speed */
1423
1424         return 1;                               /* Manual mode */
1425 }
1426
1427 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1428                         char *buf)
1429 {
1430         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1431         int nr = sattr->nr;
1432         int index = sattr->index;
1433         int speed;
1434         struct it87_data *data = it87_update_device(dev);
1435
1436         speed = has_16bit_fans(data) ?
1437                 FAN16_FROM_REG(data->fan[nr][index]) :
1438                 FAN_FROM_REG(data->fan[nr][index],
1439                              DIV_FROM_REG(data->fan_div[nr]));
1440         return sprintf(buf, "%d\n", speed);
1441 }
1442
1443 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
1444                             char *buf)
1445 {
1446         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1447         struct it87_data *data = it87_update_device(dev);
1448         int nr = sensor_attr->index;
1449
1450         return sprintf(buf, "%lu\n", DIV_FROM_REG(data->fan_div[nr]));
1451 }
1452
1453 static ssize_t show_pwm_enable(struct device *dev,
1454                                struct device_attribute *attr, char *buf)
1455 {
1456         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1457         struct it87_data *data = it87_update_device(dev);
1458         int nr = sensor_attr->index;
1459
1460         return sprintf(buf, "%d\n", pwm_mode(data, nr));
1461 }
1462
1463 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1464                         char *buf)
1465 {
1466         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1467         struct it87_data *data = it87_update_device(dev);
1468         int nr = sensor_attr->index;
1469
1470         return sprintf(buf, "%d\n",
1471                        pwm_from_reg(data, data->pwm_duty[nr]));
1472 }
1473
1474 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
1475                              char *buf)
1476 {
1477         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1478         struct it87_data *data = it87_update_device(dev);
1479         int nr = sensor_attr->index;
1480         unsigned int freq;
1481         int index;
1482
1483         if (has_pwm_freq2(data) && nr == 1)
1484                 index = (data->extra >> 4) & 0x07;
1485         else
1486                 index = (data->fan_ctl >> 4) & 0x07;
1487
1488         freq = pwm_freq[index] / (has_newer_autopwm(data) ? 256 : 128);
1489
1490         return sprintf(buf, "%u\n", freq);
1491 }
1492
1493 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1494                        const char *buf, size_t count)
1495 {
1496         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1497         int nr = sattr->nr;
1498         int index = sattr->index;
1499
1500         struct it87_data *data = dev_get_drvdata(dev);
1501         long val;
1502         u8 reg;
1503
1504         if (kstrtol(buf, 10, &val) < 0)
1505                 return -EINVAL;
1506
1507         mutex_lock(&data->update_lock);
1508
1509         if (has_16bit_fans(data)) {
1510                 data->fan[nr][index] = FAN16_TO_REG(val);
1511                 it87_write_value(data, data->REG_FAN_MIN[nr],
1512                                  data->fan[nr][index] & 0xff);
1513                 it87_write_value(data, data->REG_FANX_MIN[nr],
1514                                  data->fan[nr][index] >> 8);
1515         } else {
1516                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
1517                 switch (nr) {
1518                 case 0:
1519                         data->fan_div[nr] = reg & 0x07;
1520                         break;
1521                 case 1:
1522                         data->fan_div[nr] = (reg >> 3) & 0x07;
1523                         break;
1524                 case 2:
1525                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
1526                         break;
1527                 }
1528                 data->fan[nr][index] =
1529                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
1530                 it87_write_value(data, data->REG_FAN_MIN[nr],
1531                                  data->fan[nr][index]);
1532         }
1533
1534         mutex_unlock(&data->update_lock);
1535         return count;
1536 }
1537
1538 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
1539                            const char *buf, size_t count)
1540 {
1541         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1542         struct it87_data *data = dev_get_drvdata(dev);
1543         int nr = sensor_attr->index;
1544         unsigned long val;
1545         int min;
1546         u8 old;
1547
1548         if (kstrtoul(buf, 10, &val) < 0)
1549                 return -EINVAL;
1550
1551         mutex_lock(&data->update_lock);
1552         old = it87_read_value(data, IT87_REG_FAN_DIV);
1553
1554         /* Save fan min limit */
1555         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
1556
1557         switch (nr) {
1558         case 0:
1559         case 1:
1560                 data->fan_div[nr] = DIV_TO_REG(val);
1561                 break;
1562         case 2:
1563                 if (val < 8)
1564                         data->fan_div[nr] = 1;
1565                 else
1566                         data->fan_div[nr] = 3;
1567         }
1568         val = old & 0x80;
1569         val |= (data->fan_div[0] & 0x07);
1570         val |= (data->fan_div[1] & 0x07) << 3;
1571         if (data->fan_div[2] == 3)
1572                 val |= 0x1 << 6;
1573         it87_write_value(data, IT87_REG_FAN_DIV, val);
1574
1575         /* Restore fan min limit */
1576         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
1577         it87_write_value(data, data->REG_FAN_MIN[nr], data->fan[nr][1]);
1578
1579         mutex_unlock(&data->update_lock);
1580         return count;
1581 }
1582
1583 /* Returns 0 if OK, -EINVAL otherwise */
1584 static int check_trip_points(struct device *dev, int nr)
1585 {
1586         const struct it87_data *data = dev_get_drvdata(dev);
1587         int i, err = 0;
1588
1589         if (has_old_autopwm(data)) {
1590                 for (i = 0; i < 3; i++) {
1591                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1592                                 err = -EINVAL;
1593                 }
1594                 for (i = 0; i < 2; i++) {
1595                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
1596                                 err = -EINVAL;
1597                 }
1598         } else if (has_newer_autopwm(data)) {
1599                 for (i = 1; i < 3; i++) {
1600                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1601                                 err = -EINVAL;
1602                 }
1603         }
1604
1605         if (err) {
1606                 dev_err(dev,
1607                         "Inconsistent trip points, not switching to automatic mode\n");
1608                 dev_err(dev, "Adjust the trip points and try again\n");
1609         }
1610         return err;
1611 }
1612
1613 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
1614                               const char *buf, size_t count)
1615 {
1616         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1617         struct it87_data *data = dev_get_drvdata(dev);
1618         int nr = sensor_attr->index;
1619         long val;
1620
1621         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
1622                 return -EINVAL;
1623
1624         /* Check trip points before switching to automatic mode */
1625         if (val == 2) {
1626                 if (check_trip_points(dev, nr) < 0)
1627                         return -EINVAL;
1628         }
1629
1630         mutex_lock(&data->update_lock);
1631
1632         if (val == 0) {
1633                 if (nr < 3 && has_fanctl_onoff(data)) {
1634                         int tmp;
1635                         /* make sure the fan is on when in on/off mode */
1636                         tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1637                         it87_write_value(data, IT87_REG_FAN_CTL, tmp | BIT(nr));
1638                         /* set on/off mode */
1639                         data->fan_main_ctrl &= ~BIT(nr);
1640                         it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1641                                          data->fan_main_ctrl);
1642                 } else {
1643                         u8 ctrl;
1644
1645                         /* No on/off mode, set maximum pwm value */
1646                         data->pwm_duty[nr] = pwm_to_reg(data, 0xff);
1647                         it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1648                                          data->pwm_duty[nr]);
1649                         /* and set manual mode */
1650                         if (has_newer_autopwm(data)) {
1651                                 ctrl = (data->pwm_ctrl[nr] & 0x7c) |
1652                                         data->pwm_temp_map[nr];
1653                         } else {
1654                                 ctrl = data->pwm_duty[nr];
1655                         }
1656                         data->pwm_ctrl[nr] = ctrl;
1657                         it87_write_value(data, data->REG_PWM[nr], ctrl);
1658                 }
1659         } else {
1660                 u8 ctrl;
1661
1662                 if (has_newer_autopwm(data)) {
1663                         ctrl = (data->pwm_ctrl[nr] & 0x7c) |
1664                                 data->pwm_temp_map[nr];
1665                         if (val != 1)
1666                                 ctrl |= 0x80;
1667                 } else {
1668                         ctrl = (val == 1 ? data->pwm_duty[nr] : 0x80);
1669                 }
1670                 data->pwm_ctrl[nr] = ctrl;
1671                 it87_write_value(data, data->REG_PWM[nr], ctrl);
1672
1673                 if (has_fanctl_onoff(data) && nr < 3) {
1674                         /* set SmartGuardian mode */
1675                         data->fan_main_ctrl |= BIT(nr);
1676                         it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1677                                          data->fan_main_ctrl);
1678                 }
1679         }
1680
1681         mutex_unlock(&data->update_lock);
1682         return count;
1683 }
1684
1685 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1686                        const char *buf, size_t count)
1687 {
1688         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1689         struct it87_data *data = dev_get_drvdata(dev);
1690         int nr = sensor_attr->index;
1691         long val;
1692
1693         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1694                 return -EINVAL;
1695
1696         mutex_lock(&data->update_lock);
1697         it87_update_pwm_ctrl(data, nr);
1698         if (has_newer_autopwm(data)) {
1699                 /*
1700                  * If we are in automatic mode, the PWM duty cycle register
1701                  * is read-only so we can't write the value.
1702                  */
1703                 if (data->pwm_ctrl[nr] & 0x80) {
1704                         mutex_unlock(&data->update_lock);
1705                         return -EBUSY;
1706                 }
1707                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1708                 it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1709                                  data->pwm_duty[nr]);
1710         } else {
1711                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1712                 /*
1713                  * If we are in manual mode, write the duty cycle immediately;
1714                  * otherwise, just store it for later use.
1715                  */
1716                 if (!(data->pwm_ctrl[nr] & 0x80)) {
1717                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
1718                         it87_write_value(data, data->REG_PWM[nr],
1719                                          data->pwm_ctrl[nr]);
1720                 }
1721         }
1722         mutex_unlock(&data->update_lock);
1723         return count;
1724 }
1725
1726 static ssize_t set_pwm_freq(struct device *dev, struct device_attribute *attr,
1727                             const char *buf, size_t count)
1728 {
1729         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1730         struct it87_data *data = dev_get_drvdata(dev);
1731         int nr = sensor_attr->index;
1732         unsigned long val;
1733         int i;
1734
1735         if (kstrtoul(buf, 10, &val) < 0)
1736                 return -EINVAL;
1737
1738         val = clamp_val(val, 0, 1000000);
1739         val *= has_newer_autopwm(data) ? 256 : 128;
1740
1741         /* Search for the nearest available frequency */
1742         for (i = 0; i < 7; i++) {
1743                 if (val > (pwm_freq[i] + pwm_freq[i + 1]) / 2)
1744                         break;
1745         }
1746
1747         mutex_lock(&data->update_lock);
1748         if (nr == 0) {
1749                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1750                 data->fan_ctl |= i << 4;
1751                 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1752         } else {
1753                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x8f;
1754                 data->extra |= i << 4;
1755                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1756         }
1757         mutex_unlock(&data->update_lock);
1758
1759         return count;
1760 }
1761
1762 static ssize_t show_pwm_temp_map(struct device *dev,
1763                                  struct device_attribute *attr, char *buf)
1764 {
1765         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1766         struct it87_data *data = it87_update_device(dev);
1767         int nr = sensor_attr->index;
1768         int map;
1769
1770         map = data->pwm_temp_map[nr];
1771         if (has_new_tempmap(data)) {
1772                 map >>= 3;
1773                 if (map >= 6)
1774                         map = 0;        /* Should never happen */
1775         } else {
1776                 if (map >= 3)
1777                         map = 0;        /* Should never happen */
1778                 if (nr >= 3)            /* pwm channels 3..6 map to temp4..6 */
1779                         map += 3;
1780         }
1781
1782         return sprintf(buf, "%d\n", (int)BIT(map));
1783 }
1784
1785 static ssize_t set_pwm_temp_map(struct device *dev,
1786                                 struct device_attribute *attr, const char *buf,
1787                                 size_t count)
1788 {
1789         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1790         struct it87_data *data = dev_get_drvdata(dev);
1791         int nr = sensor_attr->index;
1792         long val;
1793         u8 reg;
1794
1795         if (kstrtol(buf, 10, &val) < 0)
1796                 return -EINVAL;
1797
1798         if (nr >= 3 && !has_new_tempmap(data))
1799                 val -= 3;
1800
1801         switch (val) {
1802         case BIT(0):
1803                 reg = 0x00;
1804                 break;
1805         case BIT(1):
1806                 reg = 0x01;
1807                 break;
1808         case BIT(2):
1809                 reg = 0x02;
1810                 break;
1811         case BIT(3):
1812                 reg = 0x03;
1813                 break;
1814         case BIT(4):
1815                 reg = 0x04;
1816                 break;
1817         case BIT(5):
1818                 reg = 0x05;
1819                 break;
1820         case BIT(6):
1821                 reg = 0x06;
1822                 break;
1823         default:
1824                 return -EINVAL;
1825         }
1826
1827         if (has_new_tempmap(data))
1828                 reg <<= 3;
1829         else if (reg > 0x02)
1830                 return -EINVAL;
1831
1832         mutex_lock(&data->update_lock);
1833         it87_update_pwm_ctrl(data, nr);
1834         data->pwm_temp_map[nr] = reg;
1835         /*
1836          * If we are in automatic mode, write the temp mapping immediately;
1837          * otherwise, just store it for later use.
1838          */
1839         if (data->pwm_ctrl[nr] & 0x80) {
1840                 u8 mask = has_new_tempmap(data) ? 0xc7 : 0xfc;
1841
1842                 data->pwm_ctrl[nr] = (data->pwm_ctrl[nr] & mask) |
1843                                                 data->pwm_temp_map[nr];
1844                 it87_write_value(data, data->REG_PWM[nr], data->pwm_ctrl[nr]);
1845         }
1846         mutex_unlock(&data->update_lock);
1847         return count;
1848 }
1849
1850 static ssize_t show_auto_pwm(struct device *dev, struct device_attribute *attr,
1851                              char *buf)
1852 {
1853         struct it87_data *data = it87_update_device(dev);
1854         struct sensor_device_attribute_2 *sensor_attr =
1855                         to_sensor_dev_attr_2(attr);
1856         int nr = sensor_attr->nr;
1857         int point = sensor_attr->index;
1858
1859         return sprintf(buf, "%d\n",
1860                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1861 }
1862
1863 static ssize_t set_auto_pwm(struct device *dev, struct device_attribute *attr,
1864                             const char *buf, size_t count)
1865 {
1866         struct it87_data *data = dev_get_drvdata(dev);
1867         struct sensor_device_attribute_2 *sensor_attr =
1868                         to_sensor_dev_attr_2(attr);
1869         int nr = sensor_attr->nr;
1870         int point = sensor_attr->index;
1871         int regaddr;
1872         long val;
1873
1874         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1875                 return -EINVAL;
1876
1877         mutex_lock(&data->update_lock);
1878         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1879         if (has_newer_autopwm(data))
1880                 regaddr = IT87_REG_AUTO_TEMP(nr, 3);
1881         else
1882                 regaddr = IT87_REG_AUTO_PWM(nr, point);
1883         it87_write_value(data, regaddr, data->auto_pwm[nr][point]);
1884         mutex_unlock(&data->update_lock);
1885         return count;
1886 }
1887
1888 static ssize_t show_auto_pwm_slope(struct device *dev,
1889                                    struct device_attribute *attr, char *buf)
1890 {
1891         struct it87_data *data = it87_update_device(dev);
1892         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1893         int nr = sensor_attr->index;
1894
1895         return sprintf(buf, "%d\n", data->auto_pwm[nr][1] & 0x7f);
1896 }
1897
1898 static ssize_t set_auto_pwm_slope(struct device *dev,
1899                                   struct device_attribute *attr,
1900                                   const char *buf, size_t count)
1901 {
1902         struct it87_data *data = dev_get_drvdata(dev);
1903         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1904         int nr = sensor_attr->index;
1905         unsigned long val;
1906
1907         if (kstrtoul(buf, 10, &val) < 0 || val > 127)
1908                 return -EINVAL;
1909
1910         mutex_lock(&data->update_lock);
1911         data->auto_pwm[nr][1] = (data->auto_pwm[nr][1] & 0x80) | val;
1912         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 4),
1913                          data->auto_pwm[nr][1]);
1914         mutex_unlock(&data->update_lock);
1915         return count;
1916 }
1917
1918 static ssize_t show_auto_temp(struct device *dev, struct device_attribute *attr,
1919                               char *buf)
1920 {
1921         struct it87_data *data = it87_update_device(dev);
1922         struct sensor_device_attribute_2 *sensor_attr =
1923                         to_sensor_dev_attr_2(attr);
1924         int nr = sensor_attr->nr;
1925         int point = sensor_attr->index;
1926         int reg;
1927
1928         if (has_old_autopwm(data) || point)
1929                 reg = data->auto_temp[nr][point];
1930         else
1931                 reg = data->auto_temp[nr][1] - (data->auto_temp[nr][0] & 0x1f);
1932
1933         return sprintf(buf, "%d\n", TEMP_FROM_REG(reg));
1934 }
1935
1936 static ssize_t set_auto_temp(struct device *dev, struct device_attribute *attr,
1937                              const char *buf, size_t count)
1938 {
1939         struct it87_data *data = dev_get_drvdata(dev);
1940         struct sensor_device_attribute_2 *sensor_attr =
1941                         to_sensor_dev_attr_2(attr);
1942         int nr = sensor_attr->nr;
1943         int point = sensor_attr->index;
1944         long val;
1945         int reg;
1946
1947         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1948                 return -EINVAL;
1949
1950         mutex_lock(&data->update_lock);
1951         if (has_newer_autopwm(data) && !point) {
1952                 reg = data->auto_temp[nr][1] - TEMP_TO_REG(val);
1953                 reg = clamp_val(reg, 0, 0x1f) | (data->auto_temp[nr][0] & 0xe0);
1954                 data->auto_temp[nr][0] = reg;
1955                 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 5), reg);
1956         } else {
1957                 reg = TEMP_TO_REG(val);
1958                 data->auto_temp[nr][point] = reg;
1959                 if (has_newer_autopwm(data))
1960                         point--;
1961                 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), reg);
1962         }
1963         mutex_unlock(&data->update_lock);
1964         return count;
1965 }
1966
1967 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1968 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1969                             0, 1);
1970 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1971                           set_fan_div, 0);
1972
1973 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1974 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1975                             1, 1);
1976 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1977                           set_fan_div, 1);
1978
1979 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1980 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1981                             2, 1);
1982 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1983                           set_fan_div, 2);
1984
1985 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1986 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1987                             3, 1);
1988
1989 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1990 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1991                             4, 1);
1992
1993 static SENSOR_DEVICE_ATTR_2(fan6_input, S_IRUGO, show_fan, NULL, 5, 0);
1994 static SENSOR_DEVICE_ATTR_2(fan6_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1995                             5, 1);
1996
1997 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1998                           show_pwm_enable, set_pwm_enable, 0);
1999 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
2000 static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq,
2001                           set_pwm_freq, 0);
2002 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO,
2003                           show_pwm_temp_map, set_pwm_temp_map, 0);
2004 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
2005                             show_auto_pwm, set_auto_pwm, 0, 0);
2006 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
2007                             show_auto_pwm, set_auto_pwm, 0, 1);
2008 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
2009                             show_auto_pwm, set_auto_pwm, 0, 2);
2010 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
2011                             show_auto_pwm, NULL, 0, 3);
2012 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
2013                             show_auto_temp, set_auto_temp, 0, 1);
2014 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
2015                             show_auto_temp, set_auto_temp, 0, 0);
2016 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
2017                             show_auto_temp, set_auto_temp, 0, 2);
2018 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
2019                             show_auto_temp, set_auto_temp, 0, 3);
2020 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
2021                             show_auto_temp, set_auto_temp, 0, 4);
2022 static SENSOR_DEVICE_ATTR_2(pwm1_auto_start, S_IRUGO | S_IWUSR,
2023                             show_auto_pwm, set_auto_pwm, 0, 0);
2024 static SENSOR_DEVICE_ATTR(pwm1_auto_slope, S_IRUGO | S_IWUSR,
2025                           show_auto_pwm_slope, set_auto_pwm_slope, 0);
2026
2027 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
2028                           show_pwm_enable, set_pwm_enable, 1);
2029 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
2030 static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, set_pwm_freq, 1);
2031 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO,
2032                           show_pwm_temp_map, set_pwm_temp_map, 1);
2033 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
2034                             show_auto_pwm, set_auto_pwm, 1, 0);
2035 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
2036                             show_auto_pwm, set_auto_pwm, 1, 1);
2037 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
2038                             show_auto_pwm, set_auto_pwm, 1, 2);
2039 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
2040                             show_auto_pwm, NULL, 1, 3);
2041 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
2042                             show_auto_temp, set_auto_temp, 1, 1);
2043 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
2044                             show_auto_temp, set_auto_temp, 1, 0);
2045 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
2046                             show_auto_temp, set_auto_temp, 1, 2);
2047 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
2048                             show_auto_temp, set_auto_temp, 1, 3);
2049 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
2050                             show_auto_temp, set_auto_temp, 1, 4);
2051 static SENSOR_DEVICE_ATTR_2(pwm2_auto_start, S_IRUGO | S_IWUSR,
2052                             show_auto_pwm, set_auto_pwm, 1, 0);
2053 static SENSOR_DEVICE_ATTR(pwm2_auto_slope, S_IRUGO | S_IWUSR,
2054                           show_auto_pwm_slope, set_auto_pwm_slope, 1);
2055
2056 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
2057                           show_pwm_enable, set_pwm_enable, 2);
2058 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
2059 static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL, 2);
2060 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO,
2061                           show_pwm_temp_map, set_pwm_temp_map, 2);
2062 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
2063                             show_auto_pwm, set_auto_pwm, 2, 0);
2064 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
2065                             show_auto_pwm, set_auto_pwm, 2, 1);
2066 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
2067                             show_auto_pwm, set_auto_pwm, 2, 2);
2068 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
2069                             show_auto_pwm, NULL, 2, 3);
2070 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
2071                             show_auto_temp, set_auto_temp, 2, 1);
2072 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
2073                             show_auto_temp, set_auto_temp, 2, 0);
2074 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
2075                             show_auto_temp, set_auto_temp, 2, 2);
2076 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
2077                             show_auto_temp, set_auto_temp, 2, 3);
2078 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
2079                             show_auto_temp, set_auto_temp, 2, 4);
2080 static SENSOR_DEVICE_ATTR_2(pwm3_auto_start, S_IRUGO | S_IWUSR,
2081                             show_auto_pwm, set_auto_pwm, 2, 0);
2082 static SENSOR_DEVICE_ATTR(pwm3_auto_slope, S_IRUGO | S_IWUSR,
2083                           show_auto_pwm_slope, set_auto_pwm_slope, 2);
2084
2085 static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
2086                           show_pwm_enable, set_pwm_enable, 3);
2087 static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 3);
2088 static SENSOR_DEVICE_ATTR(pwm4_freq, S_IRUGO, show_pwm_freq, NULL, 3);
2089 static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO,
2090                           show_pwm_temp_map, set_pwm_temp_map, 3);
2091 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp, S_IRUGO | S_IWUSR,
2092                             show_auto_temp, set_auto_temp, 2, 1);
2093 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
2094                             show_auto_temp, set_auto_temp, 2, 0);
2095 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point2_temp, S_IRUGO | S_IWUSR,
2096                             show_auto_temp, set_auto_temp, 2, 2);
2097 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point3_temp, S_IRUGO | S_IWUSR,
2098                             show_auto_temp, set_auto_temp, 2, 3);
2099 static SENSOR_DEVICE_ATTR_2(pwm4_auto_start, S_IRUGO | S_IWUSR,
2100                             show_auto_pwm, set_auto_pwm, 3, 0);
2101 static SENSOR_DEVICE_ATTR(pwm4_auto_slope, S_IRUGO | S_IWUSR,
2102                           show_auto_pwm_slope, set_auto_pwm_slope, 3);
2103
2104 static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
2105                           show_pwm_enable, set_pwm_enable, 4);
2106 static SENSOR_DEVICE_ATTR(pwm5, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 4);
2107 static SENSOR_DEVICE_ATTR(pwm5_freq, S_IRUGO, show_pwm_freq, NULL, 4);
2108 static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO,
2109                           show_pwm_temp_map, set_pwm_temp_map, 4);
2110 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp, S_IRUGO | S_IWUSR,
2111                             show_auto_temp, set_auto_temp, 2, 1);
2112 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
2113                             show_auto_temp, set_auto_temp, 2, 0);
2114 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point2_temp, S_IRUGO | S_IWUSR,
2115                             show_auto_temp, set_auto_temp, 2, 2);
2116 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point3_temp, S_IRUGO | S_IWUSR,
2117                             show_auto_temp, set_auto_temp, 2, 3);
2118 static SENSOR_DEVICE_ATTR_2(pwm5_auto_start, S_IRUGO | S_IWUSR,
2119                             show_auto_pwm, set_auto_pwm, 4, 0);
2120 static SENSOR_DEVICE_ATTR(pwm5_auto_slope, S_IRUGO | S_IWUSR,
2121                           show_auto_pwm_slope, set_auto_pwm_slope, 4);
2122
2123 static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
2124                           show_pwm_enable, set_pwm_enable, 5);
2125 static SENSOR_DEVICE_ATTR(pwm6, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 5);
2126 static SENSOR_DEVICE_ATTR(pwm6_freq, S_IRUGO, show_pwm_freq, NULL, 5);
2127 static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO,
2128                           show_pwm_temp_map, set_pwm_temp_map, 5);
2129 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp, S_IRUGO | S_IWUSR,
2130                             show_auto_temp, set_auto_temp, 2, 1);
2131 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
2132                             show_auto_temp, set_auto_temp, 2, 0);
2133 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point2_temp, S_IRUGO | S_IWUSR,
2134                             show_auto_temp, set_auto_temp, 2, 2);
2135 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point3_temp, S_IRUGO | S_IWUSR,
2136                             show_auto_temp, set_auto_temp, 2, 3);
2137 static SENSOR_DEVICE_ATTR_2(pwm6_auto_start, S_IRUGO | S_IWUSR,
2138                             show_auto_pwm, set_auto_pwm, 5, 0);
2139 static SENSOR_DEVICE_ATTR(pwm6_auto_slope, S_IRUGO | S_IWUSR,
2140                           show_auto_pwm_slope, set_auto_pwm_slope, 5);
2141
2142 /* Alarms */
2143 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
2144                            char *buf)
2145 {
2146         struct it87_data *data = it87_update_device(dev);
2147
2148         return sprintf(buf, "%u\n", data->alarms);
2149 }
2150 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
2151
2152 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
2153                           char *buf)
2154 {
2155         struct it87_data *data = it87_update_device(dev);
2156         int bitnr = to_sensor_dev_attr(attr)->index;
2157
2158         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
2159 }
2160
2161 static ssize_t clear_intrusion(struct device *dev,
2162                                struct device_attribute *attr, const char *buf,
2163                                size_t count)
2164 {
2165         struct it87_data *data = dev_get_drvdata(dev);
2166         int config;
2167         long val;
2168
2169         if (kstrtol(buf, 10, &val) < 0 || val != 0)
2170                 return -EINVAL;
2171
2172         mutex_lock(&data->update_lock);
2173         config = it87_read_value(data, IT87_REG_CONFIG);
2174         if (config < 0) {
2175                 count = config;
2176         } else {
2177                 config |= BIT(5);
2178                 it87_write_value(data, IT87_REG_CONFIG, config);
2179                 /* Invalidate cache to force re-read */
2180                 data->valid = 0;
2181         }
2182         mutex_unlock(&data->update_lock);
2183
2184         return count;
2185 }
2186
2187 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
2188 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
2189 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
2190 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
2191 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
2192 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
2193 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
2194 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
2195 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
2196 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
2197 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
2198 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
2199 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
2200 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 7);
2201 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
2202 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
2203 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
2204 static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL, 19);
2205 static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL, 20);
2206 static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL, 21);
2207 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
2208                           show_alarm, clear_intrusion, 4);
2209
2210 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
2211                          char *buf)
2212 {
2213         struct it87_data *data = it87_update_device(dev);
2214         int bitnr = to_sensor_dev_attr(attr)->index;
2215
2216         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
2217 }
2218
2219 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
2220                         const char *buf, size_t count)
2221 {
2222         int bitnr = to_sensor_dev_attr(attr)->index;
2223         struct it87_data *data = dev_get_drvdata(dev);
2224         long val;
2225
2226         if (kstrtol(buf, 10, &val) < 0 || (val != 0 && val != 1))
2227                 return -EINVAL;
2228
2229         mutex_lock(&data->update_lock);
2230         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2231         if (val)
2232                 data->beeps |= BIT(bitnr);
2233         else
2234                 data->beeps &= ~BIT(bitnr);
2235         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
2236         mutex_unlock(&data->update_lock);
2237         return count;
2238 }
2239
2240 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
2241                           show_beep, set_beep, 1);
2242 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
2243 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
2244 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
2245 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
2246 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
2247 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
2248 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
2249 /* fanX_beep writability is set later */
2250 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
2251 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
2252 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
2253 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
2254 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
2255 static SENSOR_DEVICE_ATTR(fan6_beep, S_IRUGO, show_beep, set_beep, 0);
2256 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
2257                           show_beep, set_beep, 2);
2258 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
2259 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
2260 static SENSOR_DEVICE_ATTR(temp4_beep, S_IRUGO, show_beep, NULL, 2);
2261 static SENSOR_DEVICE_ATTR(temp5_beep, S_IRUGO, show_beep, NULL, 2);
2262 static SENSOR_DEVICE_ATTR(temp6_beep, S_IRUGO, show_beep, NULL, 2);
2263
2264 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
2265                             char *buf)
2266 {
2267         struct it87_data *data = dev_get_drvdata(dev);
2268
2269         return sprintf(buf, "%u\n", data->vrm);
2270 }
2271
2272 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
2273                              const char *buf, size_t count)
2274 {
2275         struct it87_data *data = dev_get_drvdata(dev);
2276         unsigned long val;
2277
2278         if (kstrtoul(buf, 10, &val) < 0)
2279                 return -EINVAL;
2280
2281         data->vrm = val;
2282
2283         return count;
2284 }
2285 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
2286
2287 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
2288                             char *buf)
2289 {
2290         struct it87_data *data = it87_update_device(dev);
2291
2292         return sprintf(buf, "%ld\n", (long)vid_from_reg(data->vid, data->vrm));
2293 }
2294 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
2295
2296 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
2297                           char *buf)
2298 {
2299         static const char * const labels[] = {
2300                 "+5V",
2301                 "5VSB",
2302                 "Vbat",
2303                 "AVCC",
2304         };
2305         static const char * const labels_it8721[] = {
2306                 "+3.3V",
2307                 "3VSB",
2308                 "Vbat",
2309                 "+3.3V",
2310         };
2311         struct it87_data *data = dev_get_drvdata(dev);
2312         int nr = to_sensor_dev_attr(attr)->index;
2313         const char *label;
2314
2315         if (has_vin3_5v(data) && nr == 0)
2316                 label = labels[0];
2317         else if (has_12mv_adc(data) || has_10_9mv_adc(data) ||
2318                  has_11mv_adc(data))
2319                 label = labels_it8721[nr];
2320         else
2321                 label = labels[nr];
2322
2323         return sprintf(buf, "%s\n", label);
2324 }
2325 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
2326 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
2327 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
2328 /* AVCC3 */
2329 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 3);
2330
2331 static umode_t it87_in_is_visible(struct kobject *kobj,
2332                                   struct attribute *attr, int index)
2333 {
2334         struct device *dev = container_of(kobj, struct device, kobj);
2335         struct it87_data *data = dev_get_drvdata(dev);
2336         int i = index / 5;      /* voltage index */
2337         int a = index % 5;      /* attribute index */
2338
2339         if (index >= 40) {      /* in8 and higher only have input attributes */
2340                 i = index - 40 + 8;
2341                 a = 0;
2342         }
2343
2344         if (!(data->has_in & BIT(i)))
2345                 return 0;
2346
2347         if (a == 4 && !data->has_beep)
2348                 return 0;
2349
2350         return attr->mode;
2351 }
2352
2353 static struct attribute *it87_attributes_in[] = {
2354         &sensor_dev_attr_in0_input.dev_attr.attr,
2355         &sensor_dev_attr_in0_min.dev_attr.attr,
2356         &sensor_dev_attr_in0_max.dev_attr.attr,
2357         &sensor_dev_attr_in0_alarm.dev_attr.attr,
2358         &sensor_dev_attr_in0_beep.dev_attr.attr,        /* 4 */
2359
2360         &sensor_dev_attr_in1_input.dev_attr.attr,
2361         &sensor_dev_attr_in1_min.dev_attr.attr,
2362         &sensor_dev_attr_in1_max.dev_attr.attr,
2363         &sensor_dev_attr_in1_alarm.dev_attr.attr,
2364         &sensor_dev_attr_in1_beep.dev_attr.attr,        /* 9 */
2365
2366         &sensor_dev_attr_in2_input.dev_attr.attr,
2367         &sensor_dev_attr_in2_min.dev_attr.attr,
2368         &sensor_dev_attr_in2_max.dev_attr.attr,
2369         &sensor_dev_attr_in2_alarm.dev_attr.attr,
2370         &sensor_dev_attr_in2_beep.dev_attr.attr,        /* 14 */
2371
2372         &sensor_dev_attr_in3_input.dev_attr.attr,
2373         &sensor_dev_attr_in3_min.dev_attr.attr,
2374         &sensor_dev_attr_in3_max.dev_attr.attr,
2375         &sensor_dev_attr_in3_alarm.dev_attr.attr,
2376         &sensor_dev_attr_in3_beep.dev_attr.attr,        /* 19 */
2377
2378         &sensor_dev_attr_in4_input.dev_attr.attr,
2379         &sensor_dev_attr_in4_min.dev_attr.attr,
2380         &sensor_dev_attr_in4_max.dev_attr.attr,
2381         &sensor_dev_attr_in4_alarm.dev_attr.attr,
2382         &sensor_dev_attr_in4_beep.dev_attr.attr,        /* 24 */
2383
2384         &sensor_dev_attr_in5_input.dev_attr.attr,
2385         &sensor_dev_attr_in5_min.dev_attr.attr,
2386         &sensor_dev_attr_in5_max.dev_attr.attr,
2387         &sensor_dev_attr_in5_alarm.dev_attr.attr,
2388         &sensor_dev_attr_in5_beep.dev_attr.attr,        /* 29 */
2389
2390         &sensor_dev_attr_in6_input.dev_attr.attr,
2391         &sensor_dev_attr_in6_min.dev_attr.attr,
2392         &sensor_dev_attr_in6_max.dev_attr.attr,
2393         &sensor_dev_attr_in6_alarm.dev_attr.attr,
2394         &sensor_dev_attr_in6_beep.dev_attr.attr,        /* 34 */
2395
2396         &sensor_dev_attr_in7_input.dev_attr.attr,
2397         &sensor_dev_attr_in7_min.dev_attr.attr,
2398         &sensor_dev_attr_in7_max.dev_attr.attr,
2399         &sensor_dev_attr_in7_alarm.dev_attr.attr,
2400         &sensor_dev_attr_in7_beep.dev_attr.attr,        /* 39 */
2401
2402         &sensor_dev_attr_in8_input.dev_attr.attr,       /* 40 */
2403         &sensor_dev_attr_in9_input.dev_attr.attr,       /* 41 */
2404         &sensor_dev_attr_in10_input.dev_attr.attr,      /* 42 */
2405         &sensor_dev_attr_in11_input.dev_attr.attr,      /* 43 */
2406         &sensor_dev_attr_in12_input.dev_attr.attr,      /* 44 */
2407         NULL
2408 };
2409
2410 static const struct attribute_group it87_group_in = {
2411         .attrs = it87_attributes_in,
2412         .is_visible = it87_in_is_visible,
2413 };
2414
2415 static umode_t it87_temp_is_visible(struct kobject *kobj,
2416                                     struct attribute *attr, int index)
2417 {
2418         struct device *dev = container_of(kobj, struct device, kobj);
2419         struct it87_data *data = dev_get_drvdata(dev);
2420         int i = index / 7;      /* temperature index */
2421         int a = index % 7;      /* attribute index */
2422
2423         if (!(data->has_temp & BIT(i)))
2424                 return 0;
2425
2426         if (a && i >= data->num_temp_limit)
2427                 return 0;
2428
2429         if (a == 3) {
2430                 int type = get_temp_type(data, i);
2431
2432                 if (type == 0)
2433                         return 0;
2434                 if (has_bank_sel(data))
2435                         return 0444;
2436                 return attr->mode;
2437         }
2438
2439         if (a == 5 && !has_temp_offset(data))
2440                 return 0;
2441
2442         if (a == 6 && !data->has_beep)
2443                 return 0;
2444
2445         return attr->mode;
2446 }
2447
2448 static struct attribute *it87_attributes_temp[] = {
2449         &sensor_dev_attr_temp1_input.dev_attr.attr,
2450         &sensor_dev_attr_temp1_max.dev_attr.attr,
2451         &sensor_dev_attr_temp1_min.dev_attr.attr,
2452         &sensor_dev_attr_temp1_type.dev_attr.attr,      /* 3 */
2453         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
2454         &sensor_dev_attr_temp1_offset.dev_attr.attr,    /* 5 */
2455         &sensor_dev_attr_temp1_beep.dev_attr.attr,      /* 6 */
2456
2457         &sensor_dev_attr_temp2_input.dev_attr.attr,     /* 7 */
2458         &sensor_dev_attr_temp2_max.dev_attr.attr,
2459         &sensor_dev_attr_temp2_min.dev_attr.attr,
2460         &sensor_dev_attr_temp2_type.dev_attr.attr,
2461         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
2462         &sensor_dev_attr_temp2_offset.dev_attr.attr,
2463         &sensor_dev_attr_temp2_beep.dev_attr.attr,
2464
2465         &sensor_dev_attr_temp3_input.dev_attr.attr,     /* 14 */
2466         &sensor_dev_attr_temp3_max.dev_attr.attr,
2467         &sensor_dev_attr_temp3_min.dev_attr.attr,
2468         &sensor_dev_attr_temp3_type.dev_attr.attr,
2469         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
2470         &sensor_dev_attr_temp3_offset.dev_attr.attr,
2471         &sensor_dev_attr_temp3_beep.dev_attr.attr,
2472
2473         &sensor_dev_attr_temp4_input.dev_attr.attr,     /* 21 */
2474         &sensor_dev_attr_temp4_max.dev_attr.attr,
2475         &sensor_dev_attr_temp4_min.dev_attr.attr,
2476         &sensor_dev_attr_temp4_type.dev_attr.attr,
2477         &sensor_dev_attr_temp4_alarm.dev_attr.attr,
2478         &sensor_dev_attr_temp4_offset.dev_attr.attr,
2479         &sensor_dev_attr_temp4_beep.dev_attr.attr,
2480
2481         &sensor_dev_attr_temp5_input.dev_attr.attr,
2482         &sensor_dev_attr_temp5_max.dev_attr.attr,
2483         &sensor_dev_attr_temp5_min.dev_attr.attr,
2484         &sensor_dev_attr_temp5_type.dev_attr.attr,
2485         &sensor_dev_attr_temp5_alarm.dev_attr.attr,
2486         &sensor_dev_attr_temp5_offset.dev_attr.attr,
2487         &sensor_dev_attr_temp5_beep.dev_attr.attr,
2488
2489         &sensor_dev_attr_temp6_input.dev_attr.attr,
2490         &sensor_dev_attr_temp6_max.dev_attr.attr,
2491         &sensor_dev_attr_temp6_min.dev_attr.attr,
2492         &sensor_dev_attr_temp6_type.dev_attr.attr,
2493         &sensor_dev_attr_temp6_alarm.dev_attr.attr,
2494         &sensor_dev_attr_temp6_offset.dev_attr.attr,
2495         &sensor_dev_attr_temp6_beep.dev_attr.attr,
2496         NULL
2497 };
2498
2499 static const struct attribute_group it87_group_temp = {
2500         .attrs = it87_attributes_temp,
2501         .is_visible = it87_temp_is_visible,
2502 };
2503
2504 static umode_t it87_is_visible(struct kobject *kobj,
2505                                struct attribute *attr, int index)
2506 {
2507         struct device *dev = container_of(kobj, struct device, kobj);
2508         struct it87_data *data = dev_get_drvdata(dev);
2509
2510         if ((index == 2 || index == 3) && !data->has_vid)
2511                 return 0;
2512
2513         if (index > 3 && !(data->in_internal & BIT(index - 4)))
2514                 return 0;
2515
2516         return attr->mode;
2517 }
2518
2519 static struct attribute *it87_attributes[] = {
2520         &dev_attr_alarms.attr,
2521         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
2522         &dev_attr_vrm.attr,                             /* 2 */
2523         &dev_attr_cpu0_vid.attr,                        /* 3 */
2524         &sensor_dev_attr_in3_label.dev_attr.attr,       /* 4 .. 7 */
2525         &sensor_dev_attr_in7_label.dev_attr.attr,
2526         &sensor_dev_attr_in8_label.dev_attr.attr,
2527         &sensor_dev_attr_in9_label.dev_attr.attr,
2528         NULL
2529 };
2530
2531 static const struct attribute_group it87_group = {
2532         .attrs = it87_attributes,
2533         .is_visible = it87_is_visible,
2534 };
2535
2536 static umode_t it87_fan_is_visible(struct kobject *kobj,
2537                                    struct attribute *attr, int index)
2538 {
2539         struct device *dev = container_of(kobj, struct device, kobj);
2540         struct it87_data *data = dev_get_drvdata(dev);
2541         int i = index / 5;      /* fan index */
2542         int a = index % 5;      /* attribute index */
2543
2544         if (index >= 15) {      /* fan 4..6 don't have divisor attributes */
2545                 i = (index - 15) / 4 + 3;
2546                 a = (index - 15) % 4;
2547         }
2548
2549         if (!(data->has_fan & BIT(i)))
2550                 return 0;
2551
2552         if (a == 3) {                           /* beep */
2553                 if (!data->has_beep)
2554                         return 0;
2555                 /* first fan beep attribute is writable */
2556                 if (i == __ffs(data->has_fan))
2557                         return attr->mode | S_IWUSR;
2558         }
2559
2560         if (a == 4 && has_16bit_fans(data))     /* divisor */
2561                 return 0;
2562
2563         return attr->mode;
2564 }
2565
2566 static struct attribute *it87_attributes_fan[] = {
2567         &sensor_dev_attr_fan1_input.dev_attr.attr,
2568         &sensor_dev_attr_fan1_min.dev_attr.attr,
2569         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
2570         &sensor_dev_attr_fan1_beep.dev_attr.attr,       /* 3 */
2571         &sensor_dev_attr_fan1_div.dev_attr.attr,        /* 4 */
2572
2573         &sensor_dev_attr_fan2_input.dev_attr.attr,
2574         &sensor_dev_attr_fan2_min.dev_attr.attr,
2575         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
2576         &sensor_dev_attr_fan2_beep.dev_attr.attr,
2577         &sensor_dev_attr_fan2_div.dev_attr.attr,        /* 9 */
2578
2579         &sensor_dev_attr_fan3_input.dev_attr.attr,
2580         &sensor_dev_attr_fan3_min.dev_attr.attr,
2581         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
2582         &sensor_dev_attr_fan3_beep.dev_attr.attr,
2583         &sensor_dev_attr_fan3_div.dev_attr.attr,        /* 14 */
2584
2585         &sensor_dev_attr_fan4_input.dev_attr.attr,      /* 15 */
2586         &sensor_dev_attr_fan4_min.dev_attr.attr,
2587         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
2588         &sensor_dev_attr_fan4_beep.dev_attr.attr,
2589
2590         &sensor_dev_attr_fan5_input.dev_attr.attr,      /* 19 */
2591         &sensor_dev_attr_fan5_min.dev_attr.attr,
2592         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
2593         &sensor_dev_attr_fan5_beep.dev_attr.attr,
2594
2595         &sensor_dev_attr_fan6_input.dev_attr.attr,      /* 23 */
2596         &sensor_dev_attr_fan6_min.dev_attr.attr,
2597         &sensor_dev_attr_fan6_alarm.dev_attr.attr,
2598         &sensor_dev_attr_fan6_beep.dev_attr.attr,
2599         NULL
2600 };
2601
2602 static const struct attribute_group it87_group_fan = {
2603         .attrs = it87_attributes_fan,
2604         .is_visible = it87_fan_is_visible,
2605 };
2606
2607 static umode_t it87_pwm_is_visible(struct kobject *kobj,
2608                                    struct attribute *attr, int index)
2609 {
2610         struct device *dev = container_of(kobj, struct device, kobj);
2611         struct it87_data *data = dev_get_drvdata(dev);
2612         int i = index / 4;      /* pwm index */
2613         int a = index % 4;      /* attribute index */
2614
2615         if (!(data->has_pwm & BIT(i)))
2616                 return 0;
2617
2618         /* pwmX_auto_channels_temp is only writable if auto pwm is supported */
2619         if (a == 3 && (has_old_autopwm(data) || has_newer_autopwm(data)))
2620                 return attr->mode | S_IWUSR;
2621
2622         /* pwm2_freq is writable if there are two pwm frequency selects */
2623         if (has_pwm_freq2(data) && i == 1 && a == 2)
2624                 return attr->mode | S_IWUSR;
2625
2626         return attr->mode;
2627 }
2628
2629 static struct attribute *it87_attributes_pwm[] = {
2630         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
2631         &sensor_dev_attr_pwm1.dev_attr.attr,
2632         &sensor_dev_attr_pwm1_freq.dev_attr.attr,
2633         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
2634
2635         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
2636         &sensor_dev_attr_pwm2.dev_attr.attr,
2637         &sensor_dev_attr_pwm2_freq.dev_attr.attr,
2638         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
2639
2640         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
2641         &sensor_dev_attr_pwm3.dev_attr.attr,
2642         &sensor_dev_attr_pwm3_freq.dev_attr.attr,
2643         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
2644
2645         &sensor_dev_attr_pwm4_enable.dev_attr.attr,
2646         &sensor_dev_attr_pwm4.dev_attr.attr,
2647         &sensor_dev_attr_pwm4_freq.dev_attr.attr,
2648         &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
2649
2650         &sensor_dev_attr_pwm5_enable.dev_attr.attr,
2651         &sensor_dev_attr_pwm5.dev_attr.attr,
2652         &sensor_dev_attr_pwm5_freq.dev_attr.attr,
2653         &sensor_dev_attr_pwm5_auto_channels_temp.dev_attr.attr,
2654
2655         &sensor_dev_attr_pwm6_enable.dev_attr.attr,
2656         &sensor_dev_attr_pwm6.dev_attr.attr,
2657         &sensor_dev_attr_pwm6_freq.dev_attr.attr,
2658         &sensor_dev_attr_pwm6_auto_channels_temp.dev_attr.attr,
2659
2660         NULL
2661 };
2662
2663 static const struct attribute_group it87_group_pwm = {
2664         .attrs = it87_attributes_pwm,
2665         .is_visible = it87_pwm_is_visible,
2666 };
2667
2668 static umode_t it87_auto_pwm_is_visible(struct kobject *kobj,
2669                                         struct attribute *attr, int index)
2670 {
2671         struct device *dev = container_of(kobj, struct device, kobj);
2672         struct it87_data *data = dev_get_drvdata(dev);
2673         int i = index / 11;     /* pwm index */
2674         int a = index % 11;     /* attribute index */
2675
2676         if (index >= 33) {      /* pwm 4..6 */
2677                 i = (index - 33) / 6 + 3;
2678                 a = (index - 33) % 6 + 4;
2679         }
2680
2681         if (!(data->has_pwm & BIT(i)))
2682                 return 0;
2683
2684         if (has_newer_autopwm(data)) {
2685                 if (a < 4)      /* no auto point pwm */
2686                         return 0;
2687                 if (a == 8)     /* no auto_point4 */
2688                         return 0;
2689         }
2690         if (has_old_autopwm(data)) {
2691                 if (a >= 9)     /* no pwm_auto_start, pwm_auto_slope */
2692                         return 0;
2693         }
2694
2695         return attr->mode;
2696 }
2697
2698 static struct attribute *it87_attributes_auto_pwm[] = {
2699         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
2700         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
2701         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
2702         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
2703         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
2704         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
2705         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
2706         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
2707         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
2708         &sensor_dev_attr_pwm1_auto_start.dev_attr.attr,
2709         &sensor_dev_attr_pwm1_auto_slope.dev_attr.attr,
2710
2711         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,    /* 11 */
2712         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
2713         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
2714         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
2715         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
2716         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
2717         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
2718         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
2719         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
2720         &sensor_dev_attr_pwm2_auto_start.dev_attr.attr,
2721         &sensor_dev_attr_pwm2_auto_slope.dev_attr.attr,
2722
2723         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,    /* 22 */
2724         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
2725         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
2726         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
2727         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
2728         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
2729         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
2730         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
2731         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
2732         &sensor_dev_attr_pwm3_auto_start.dev_attr.attr,
2733         &sensor_dev_attr_pwm3_auto_slope.dev_attr.attr,
2734
2735         &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr,   /* 33 */
2736         &sensor_dev_attr_pwm4_auto_point1_temp_hyst.dev_attr.attr,
2737         &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr,
2738         &sensor_dev_attr_pwm4_auto_point3_temp.dev_attr.attr,
2739         &sensor_dev_attr_pwm4_auto_start.dev_attr.attr,
2740         &sensor_dev_attr_pwm4_auto_slope.dev_attr.attr,
2741
2742         &sensor_dev_attr_pwm5_auto_point1_temp.dev_attr.attr,
2743         &sensor_dev_attr_pwm5_auto_point1_temp_hyst.dev_attr.attr,
2744         &sensor_dev_attr_pwm5_auto_point2_temp.dev_attr.attr,
2745         &sensor_dev_attr_pwm5_auto_point3_temp.dev_attr.attr,
2746         &sensor_dev_attr_pwm5_auto_start.dev_attr.attr,
2747         &sensor_dev_attr_pwm5_auto_slope.dev_attr.attr,
2748
2749         &sensor_dev_attr_pwm6_auto_point1_temp.dev_attr.attr,
2750         &sensor_dev_attr_pwm6_auto_point1_temp_hyst.dev_attr.attr,
2751         &sensor_dev_attr_pwm6_auto_point2_temp.dev_attr.attr,
2752         &sensor_dev_attr_pwm6_auto_point3_temp.dev_attr.attr,
2753         &sensor_dev_attr_pwm6_auto_start.dev_attr.attr,
2754         &sensor_dev_attr_pwm6_auto_slope.dev_attr.attr,
2755
2756         NULL,
2757 };
2758
2759 static const struct attribute_group it87_group_auto_pwm = {
2760         .attrs = it87_attributes_auto_pwm,
2761         .is_visible = it87_auto_pwm_is_visible,
2762 };
2763
2764 /* SuperIO detection - will change isa_address if a chip is found */
2765 static int __init it87_find(int sioaddr, unsigned short *address,
2766                             struct it87_sio_data *sio_data)
2767 {
2768         int err;
2769         u16 chip_type;
2770         const struct it87_devices *config;
2771
2772         err = superio_enter(sioaddr);
2773         if (err)
2774                 return err;
2775
2776         err = -ENODEV;
2777         chip_type = superio_inw(sioaddr, DEVID);
2778         if (chip_type == 0xffff)
2779                 goto exit;
2780
2781         if (force_id)
2782                 chip_type = force_id;
2783
2784         switch (chip_type) {
2785         case IT8705F_DEVID:
2786                 sio_data->type = it87;
2787                 break;
2788         case IT8712F_DEVID:
2789                 sio_data->type = it8712;
2790                 break;
2791         case IT8716F_DEVID:
2792         case IT8726F_DEVID:
2793                 sio_data->type = it8716;
2794                 break;
2795         case IT8718F_DEVID:
2796                 sio_data->type = it8718;
2797                 break;
2798         case IT8720F_DEVID:
2799                 sio_data->type = it8720;
2800                 break;
2801         case IT8721F_DEVID:
2802                 sio_data->type = it8721;
2803                 break;
2804         case IT8728F_DEVID:
2805                 sio_data->type = it8728;
2806                 break;
2807         case IT8732F_DEVID:
2808                 sio_data->type = it8732;
2809                 break;
2810         case IT8792E_DEVID:
2811                 sio_data->type = it8792;
2812                 break;
2813         case IT8771E_DEVID:
2814                 sio_data->type = it8771;
2815                 break;
2816         case IT8772E_DEVID:
2817                 sio_data->type = it8772;
2818                 break;
2819         case IT8781F_DEVID:
2820                 sio_data->type = it8781;
2821                 break;
2822         case IT8782F_DEVID:
2823                 sio_data->type = it8782;
2824                 break;
2825         case IT8783E_DEVID:
2826                 sio_data->type = it8783;
2827                 break;
2828         case IT8786E_DEVID:
2829                 sio_data->type = it8786;
2830                 break;
2831         case IT8790E_DEVID:
2832                 sio_data->type = it8790;
2833                 break;
2834         case IT8603E_DEVID:
2835         case IT8623E_DEVID:
2836                 sio_data->type = it8603;
2837                 break;
2838         case IT8607E_DEVID:
2839                 sio_data->type = it8607;
2840                 break;
2841         case IT8613E_DEVID:
2842                 sio_data->type = it8613;
2843                 break;
2844         case IT8620E_DEVID:
2845                 sio_data->type = it8620;
2846                 break;
2847         case IT8622E_DEVID:
2848                 sio_data->type = it8622;
2849                 break;
2850         case IT8625E_DEVID:
2851                 sio_data->type = it8625;
2852                 break;
2853         case IT8628E_DEVID:
2854                 sio_data->type = it8628;
2855                 break;
2856         case IT8655E_DEVID:
2857                 sio_data->type = it8655;
2858                 break;
2859         case IT8665E_DEVID:
2860                 sio_data->type = it8665;
2861                 break;
2862         case IT8686E_DEVID:
2863                 sio_data->type = it8686;
2864                 break;
2865         case 0xffff:    /* No device at all */
2866                 goto exit;
2867         default:
2868                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
2869                 goto exit;
2870         }
2871
2872         superio_select(sioaddr, PME);
2873         if (!(superio_inb(sioaddr, IT87_ACT_REG) & 0x01)) {
2874                 pr_info("Device not activated, skipping\n");
2875                 goto exit;
2876         }
2877
2878         *address = superio_inw(sioaddr, IT87_BASE_REG) & ~(IT87_EXTENT - 1);
2879         if (*address == 0) {
2880                 pr_info("Base address not set, skipping\n");
2881                 goto exit;
2882         }
2883
2884         err = 0;
2885         sio_data->revision = superio_inb(sioaddr, DEVREV) & 0x0f;
2886         pr_info("Found IT%04x%s chip at 0x%x, revision %d\n", chip_type,
2887                 it87_devices[sio_data->type].suffix,
2888                 *address, sio_data->revision);
2889
2890         config = &it87_devices[sio_data->type];
2891
2892         /* in7 (VSB or VCCH5V) is always internal on some chips */
2893         if (has_in7_internal(config))
2894                 sio_data->internal |= BIT(1);
2895
2896         /* in8 (Vbat) is always internal */
2897         sio_data->internal |= BIT(2);
2898
2899         /* in9 (AVCC3), always internal if supported */
2900         if (has_avcc3(config))
2901                 sio_data->internal |= BIT(3); /* in9 is AVCC */
2902         else
2903                 sio_data->skip_in |= BIT(9);
2904
2905         if (!has_four_pwm(config))
2906                 sio_data->skip_pwm |= BIT(3) | BIT(4) | BIT(5);
2907         else if (!has_five_pwm(config))
2908                 sio_data->skip_pwm |= BIT(4) | BIT(5);
2909         else if (!has_six_pwm(config))
2910                 sio_data->skip_pwm |= BIT(5);
2911
2912         if (!has_vid(config))
2913                 sio_data->skip_vid = 1;
2914
2915         /* Read GPIO config and VID value from LDN 7 (GPIO) */
2916         if (sio_data->type == it87) {
2917                 /* The IT8705F has a different LD number for GPIO */
2918                 superio_select(sioaddr, 5);
2919                 sio_data->beep_pin = superio_inb(sioaddr,
2920                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
2921         } else if (sio_data->type == it8783) {
2922                 int reg25, reg27, reg2a, reg2c, regef;
2923
2924                 superio_select(sioaddr, GPIO);
2925
2926                 reg25 = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2927                 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2928                 reg2a = superio_inb(sioaddr, IT87_SIO_PINX1_REG);
2929                 reg2c = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2930                 regef = superio_inb(sioaddr, IT87_SIO_SPI_REG);
2931
2932                 /* Check if fan3 is there or not */
2933                 if ((reg27 & BIT(0)) || !(reg2c & BIT(2)))
2934                         sio_data->skip_fan |= BIT(2);
2935                 if ((reg25 & BIT(4)) ||
2936                     (!(reg2a & BIT(1)) && (regef & BIT(0))))
2937                         sio_data->skip_pwm |= BIT(2);
2938
2939                 /* Check if fan2 is there or not */
2940                 if (reg27 & BIT(7))
2941                         sio_data->skip_fan |= BIT(1);
2942                 if (reg27 & BIT(3))
2943                         sio_data->skip_pwm |= BIT(1);
2944
2945                 /* VIN5 */
2946                 if ((reg27 & BIT(0)) || (reg2c & BIT(2)))
2947                         sio_data->skip_in |= BIT(5); /* No VIN5 */
2948
2949                 /* VIN6 */
2950                 if (reg27 & BIT(1))
2951                         sio_data->skip_in |= BIT(6); /* No VIN6 */
2952
2953                 /*
2954                  * VIN7
2955                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
2956                  */
2957                 if (reg27 & BIT(2)) {
2958                         /*
2959                          * The data sheet is a bit unclear regarding the
2960                          * internal voltage divider for VCCH5V. It says
2961                          * "This bit enables and switches VIN7 (pin 91) to the
2962                          * internal voltage divider for VCCH5V".
2963                          * This is different to other chips, where the internal
2964                          * voltage divider would connect VIN7 to an internal
2965                          * voltage source. Maybe that is the case here as well.
2966                          *
2967                          * Since we don't know for sure, re-route it if that is
2968                          * not the case, and ask the user to report if the
2969                          * resulting voltage is sane.
2970                          */
2971                         if (!(reg2c & BIT(1))) {
2972                                 reg2c |= BIT(1);
2973                                 superio_outb(sioaddr, IT87_SIO_PINX2_REG,
2974                                              reg2c);
2975                                 pr_notice("Routing internal VCCH5V to in7.\n");
2976                         }
2977                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
2978                         pr_notice("Please report if it displays a reasonable voltage.\n");
2979                 }
2980
2981                 if (reg2c & BIT(0))
2982                         sio_data->internal |= BIT(0);
2983                 if (reg2c & BIT(1))
2984                         sio_data->internal |= BIT(1);
2985
2986                 sio_data->beep_pin = superio_inb(sioaddr,
2987                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
2988         } else if (sio_data->type == it8603 || sio_data->type == it8607) {
2989                 int reg27, reg29;
2990
2991                 superio_select(sioaddr, GPIO);
2992
2993                 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2994
2995                 /* Check if fan3 is there or not */
2996                 if (reg27 & BIT(6))
2997                         sio_data->skip_pwm |= BIT(2);
2998                 if (reg27 & BIT(7))
2999                         sio_data->skip_fan |= BIT(2);
3000
3001                 /* Check if fan2 is there or not */
3002                 reg29 = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3003                 if (reg29 & BIT(1))
3004                         sio_data->skip_pwm |= BIT(1);
3005                 if (reg29 & BIT(2))
3006                         sio_data->skip_fan |= BIT(1);
3007
3008                 if (sio_data->type == it8603) {
3009                         sio_data->skip_in |= BIT(5); /* No VIN5 */
3010                         sio_data->skip_in |= BIT(6); /* No VIN6 */
3011                 }
3012
3013                 sio_data->beep_pin = superio_inb(sioaddr,
3014                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
3015         } else if (sio_data->type == it8613) {
3016                 int reg27, reg29, reg2a;
3017
3018                 superio_select(sioaddr, GPIO);
3019
3020                 /* Check for pwm3, fan3, pwm5, fan5 */
3021                 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
3022                 if (reg27 & BIT(1))
3023                         sio_data->skip_fan |= BIT(4);
3024                 if (reg27 & BIT(3))
3025                         sio_data->skip_pwm |= BIT(4);
3026                 if (reg27 & BIT(6))
3027                         sio_data->skip_pwm |= BIT(2);
3028                 if (reg27 & BIT(7))
3029                         sio_data->skip_fan |= BIT(2);
3030
3031                 /* Check for pwm2, fan2 */
3032                 reg29 = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3033                 if (reg29 & BIT(1))
3034                         sio_data->skip_pwm |= BIT(1);
3035                 if (reg29 & BIT(2))
3036                         sio_data->skip_fan |= BIT(1);
3037
3038                 /* Check for pwm4, fan4 */
3039                 reg2a = superio_inb(sioaddr, IT87_SIO_PINX1_REG);
3040                 if (!(reg2a & BIT(0)) || (reg29 & BIT(7))) {
3041                         sio_data->skip_fan |= BIT(3);
3042                         sio_data->skip_pwm |= BIT(3);
3043                 }
3044
3045                 sio_data->skip_pwm |= BIT(0); /* No pwm1 */
3046                 sio_data->skip_fan |= BIT(0); /* No fan1 */
3047                 sio_data->skip_in |= BIT(3);  /* No VIN3 */
3048                 sio_data->skip_in |= BIT(6);  /* No VIN6 */
3049
3050                 sio_data->beep_pin = superio_inb(sioaddr,
3051                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
3052         } else if (sio_data->type == it8620 || sio_data->type == it8628 ||
3053                    sio_data->type == it8686) {
3054                 int reg;
3055
3056                 superio_select(sioaddr, GPIO);
3057
3058                 /* Check for pwm5 */
3059                 reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
3060                 if (reg & BIT(6))
3061                         sio_data->skip_pwm |= BIT(4);
3062
3063                 /* Check for fan4, fan5 */
3064                 reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
3065                 if (!(reg & BIT(5)))
3066                         sio_data->skip_fan |= BIT(3);
3067                 if (!(reg & BIT(4)))
3068                         sio_data->skip_fan |= BIT(4);
3069
3070                 /* Check for pwm3, fan3 */
3071                 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
3072                 if (reg & BIT(6))
3073                         sio_data->skip_pwm |= BIT(2);
3074                 if (reg & BIT(7))
3075                         sio_data->skip_fan |= BIT(2);
3076
3077                 /* Check for pwm4 */
3078                 reg = superio_inb(sioaddr, IT87_SIO_GPIO4_REG);
3079                 if (reg & BIT(2))
3080                         sio_data->skip_pwm |= BIT(3);
3081
3082                 /* Check for pwm2, fan2 */
3083                 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3084                 if (reg & BIT(1))
3085                         sio_data->skip_pwm |= BIT(1);
3086                 if (reg & BIT(2))
3087                         sio_data->skip_fan |= BIT(1);
3088                 /* Check for pwm6, fan6 */
3089                 if (!(reg & BIT(7))) {
3090                         sio_data->skip_pwm |= BIT(5);
3091                         sio_data->skip_fan |= BIT(5);
3092                 }
3093
3094                 /* Check if AVCC is on VIN3 */
3095                 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
3096                 if (reg & BIT(0)) {
3097                         /* For it8686, the bit just enables AVCC3 */
3098                         if (sio_data->type != it8686)
3099                                 sio_data->internal |= BIT(0);
3100                 } else {
3101                         sio_data->internal &= ~BIT(3);
3102                         sio_data->skip_in |= BIT(9);
3103                 }
3104
3105                 sio_data->beep_pin = superio_inb(sioaddr,
3106                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
3107         } else if (sio_data->type == it8622) {
3108                 int reg;
3109
3110                 superio_select(sioaddr, GPIO);
3111
3112                 /* Check for pwm4, fan4 */
3113                 reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
3114                 if (reg & BIT(6))
3115                         sio_data->skip_fan |= BIT(3);
3116                 if (reg & BIT(5))
3117                         sio_data->skip_pwm |= BIT(3);
3118
3119                 /* Check for pwm3, fan3, pwm5, fan5 */
3120                 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
3121                 if (reg & BIT(6))
3122                         sio_data->skip_pwm |= BIT(2);
3123                 if (reg & BIT(7))
3124                         sio_data->skip_fan |= BIT(2);
3125                 if (reg & BIT(3))
3126                         sio_data->skip_pwm |= BIT(4);
3127                 if (reg & BIT(1))
3128                         sio_data->skip_fan |= BIT(4);
3129
3130                 /* Check for pwm2, fan2 */
3131                 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3132                 if (reg & BIT(1))
3133                         sio_data->skip_pwm |= BIT(1);
3134                 if (reg & BIT(2))
3135                         sio_data->skip_fan |= BIT(1);
3136
3137                 /* Check for AVCC */
3138                 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
3139                 if (!(reg & BIT(0)))
3140                         sio_data->skip_in |= BIT(9);
3141
3142                 sio_data->beep_pin = superio_inb(sioaddr,
3143                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
3144         } else if (sio_data->type == it8732) {
3145                 int reg;
3146
3147                 superio_select(sioaddr, GPIO);
3148
3149                 /* Check for pwm2, fan2 */
3150                 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3151                 if (reg & BIT(1))
3152                         sio_data->skip_pwm |= BIT(1);
3153                 if (reg & BIT(2))
3154                         sio_data->skip_fan |= BIT(1);
3155
3156                 /* Check for pwm3, fan3, fan4 */
3157                 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
3158                 if (reg & BIT(6))
3159                         sio_data->skip_pwm |= BIT(2);
3160                 if (reg & BIT(7))
3161                         sio_data->skip_fan |= BIT(2);
3162                 if (reg & BIT(5))
3163                         sio_data->skip_fan |= BIT(3);
3164
3165                 /* Check if AVCC is on VIN3 */
3166                 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
3167                 if (reg & BIT(0))
3168                         sio_data->internal |= BIT(0);
3169
3170                 sio_data->beep_pin = superio_inb(sioaddr,
3171                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
3172         } else if (sio_data->type == it8655) {
3173                 int reg;
3174
3175                 superio_select(sioaddr, GPIO);
3176
3177                 /* Check for pwm2 */
3178                 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3179                 if (reg & BIT(1))
3180                         sio_data->skip_pwm |= BIT(1);
3181
3182                 /* Check for fan2 */
3183                 reg = superio_inb(sioaddr, IT87_SIO_PINX4_REG);
3184                 if (reg & BIT(4))
3185                         sio_data->skip_fan |= BIT(1);
3186
3187                 /* Check for pwm3, fan3 */
3188                 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
3189                 if (reg & BIT(6))
3190                         sio_data->skip_pwm |= BIT(2);
3191                 if (reg & BIT(7))
3192                         sio_data->skip_fan |= BIT(2);
3193
3194                 sio_data->beep_pin = superio_inb(sioaddr,
3195                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
3196         } else if (sio_data->type == it8665 || sio_data->type == it8625) {
3197                 int reg27, reg29, reg2d, regd3;
3198
3199                 superio_select(sioaddr, GPIO);
3200
3201                 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
3202                 reg29 = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3203                 reg2d = superio_inb(sioaddr, IT87_SIO_PINX4_REG);
3204                 regd3 = superio_inb(sioaddr, IT87_SIO_GPIO9_REG);
3205
3206                 /* Check for pwm2, fan2 */
3207                 if (reg29 & BIT(1))
3208                         sio_data->skip_pwm |= BIT(1);
3209                 if (reg2d & BIT(4))
3210                         sio_data->skip_fan |= BIT(1);
3211
3212                 /* Check for pwm3, fan3 */
3213                 if (reg27 & BIT(6))
3214                         sio_data->skip_pwm |= BIT(2);
3215                 if (reg27 & BIT(7))
3216                         sio_data->skip_fan |= BIT(2);
3217
3218                 /* Check for pwm4, fan4, pwm5, fan5 */
3219                 if (sio_data->type == it8625) {
3220                         int reg25 = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
3221
3222                         if (reg25 & BIT(6))
3223                                 sio_data->skip_fan |= BIT(3);
3224                         if (reg25 & BIT(5))
3225                                 sio_data->skip_pwm |= BIT(3);
3226                         if (reg27 & BIT(3))
3227                                 sio_data->skip_pwm |= BIT(4);
3228                         if (reg27 & BIT(1))
3229                                 sio_data->skip_fan |= BIT(4);
3230                 } else {
3231                         int reg26 = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
3232
3233                         if (regd3 & BIT(2))
3234                                 sio_data->skip_pwm |= BIT(3);
3235                         if (regd3 & BIT(3))
3236                                 sio_data->skip_fan |= BIT(3);
3237                         if (reg26 & BIT(5))
3238                                 sio_data->skip_pwm |= BIT(4);
3239                         if (!(reg26 & BIT(4)))
3240                                 sio_data->skip_fan |= BIT(4);
3241                 }
3242
3243                 /* Check for pwm6, fan6 */
3244                 if (regd3 & BIT(0))
3245                         sio_data->skip_pwm |= BIT(5);
3246                 if (regd3 & BIT(1))
3247                         sio_data->skip_fan |= BIT(5);
3248
3249                 sio_data->beep_pin = superio_inb(sioaddr,
3250                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
3251         } else {
3252                 int reg;
3253                 bool uart6;
3254
3255                 superio_select(sioaddr, GPIO);
3256
3257                 /* Check for fan4, fan5 */
3258                 if (has_five_fans(config)) {
3259                         reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
3260                         switch (sio_data->type) {
3261                         case it8718:
3262                                 if (reg & BIT(5))
3263                                         sio_data->skip_fan |= BIT(3);
3264                                 if (reg & BIT(4))
3265                                         sio_data->skip_fan |= BIT(4);
3266                                 break;
3267                         case it8720:
3268                         case it8721:
3269                         case it8728:
3270                                 if (!(reg & BIT(5)))
3271                                         sio_data->skip_fan |= BIT(3);
3272                                 if (!(reg & BIT(4)))
3273                                         sio_data->skip_fan |= BIT(4);
3274                                 break;
3275                         default:
3276                                 break;
3277                         }
3278                 }
3279
3280                 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
3281                 if (!sio_data->skip_vid) {
3282                         /* We need at least 4 VID pins */
3283                         if (reg & 0x0f) {
3284                                 pr_info("VID is disabled (pins used for GPIO)\n");
3285                                 sio_data->skip_vid = 1;
3286                         }
3287                 }
3288
3289                 /* Check if fan3 is there or not */
3290                 if (reg & BIT(6))
3291                         sio_data->skip_pwm |= BIT(2);
3292                 if (reg & BIT(7))
3293                         sio_data->skip_fan |= BIT(2);
3294
3295                 /* Check if fan2 is there or not */
3296                 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
3297                 if (reg & BIT(1))
3298                         sio_data->skip_pwm |= BIT(1);
3299                 if (reg & BIT(2))
3300                         sio_data->skip_fan |= BIT(1);
3301
3302                 if ((sio_data->type == it8718 || sio_data->type == it8720) &&
3303                     !(sio_data->skip_vid))
3304                         sio_data->vid_value = superio_inb(sioaddr,
3305                                                           IT87_SIO_VID_REG);
3306
3307                 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
3308
3309                 uart6 = sio_data->type == it8782 && (reg & BIT(2));
3310
3311                 /*
3312                  * The IT8720F has no VIN7 pin, so VCCH should always be
3313                  * routed internally to VIN7 with an internal divider.
3314                  * Curiously, there still is a configuration bit to control
3315                  * this, which means it can be set incorrectly. And even
3316                  * more curiously, many boards out there are improperly
3317                  * configured, even though the IT8720F datasheet claims
3318                  * that the internal routing of VCCH to VIN7 is the default
3319                  * setting. So we force the internal routing in this case.
3320                  *
3321                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
3322                  * If UART6 is enabled, re-route VIN7 to the internal divider
3323                  * if that is not already the case.
3324                  */
3325                 if ((sio_data->type == it8720 || uart6) && !(reg & BIT(1))) {
3326                         reg |= BIT(1);
3327                         superio_outb(sioaddr, IT87_SIO_PINX2_REG, reg);
3328                         pr_notice("Routing internal VCCH to in7\n");
3329                 }
3330                 if (reg & BIT(0))
3331                         sio_data->internal |= BIT(0);
3332                 if (reg & BIT(1))
3333                         sio_data->internal |= BIT(1);
3334
3335                 /*
3336                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
3337                  * While VIN7 can be routed to the internal voltage divider,
3338                  * VIN5 and VIN6 are not available if UART6 is enabled.
3339                  *
3340                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
3341                  * is the temperature source. Since we can not read the
3342                  * temperature source here, skip_temp is preliminary.
3343                  */
3344                 if (uart6) {
3345                         sio_data->skip_in |= BIT(5) | BIT(6);
3346                         sio_data->skip_temp |= BIT(2);
3347                 }
3348
3349                 sio_data->beep_pin = superio_inb(sioaddr,
3350                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
3351         }
3352         if (sio_data->beep_pin)
3353                 pr_info("Beeping is supported\n");
3354
3355 exit:
3356         superio_exit(sioaddr);
3357         return err;
3358 }
3359
3360 static void it87_init_regs(struct platform_device *pdev)
3361 {
3362         struct it87_data *data = platform_get_drvdata(pdev);
3363
3364         /* Initialize chip specific register pointers */
3365         switch (data->type) {
3366         case it8686:
3367                 data->REG_FAN = IT87_REG_FAN;
3368                 data->REG_FANX = IT87_REG_FANX;
3369                 data->REG_FAN_MIN = IT87_REG_FAN_MIN;
3370                 data->REG_FANX_MIN = IT87_REG_FANX_MIN;
3371                 data->REG_PWM = IT87_REG_PWM;
3372                 data->REG_TEMP_OFFSET = IT87_REG_TEMP_OFFSET_8686;
3373                 data->REG_TEMP_LOW = IT87_REG_TEMP_LOW_8686;
3374                 data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH_8686;
3375                 break;
3376         case it8625:
3377         case it8655:
3378         case it8665:
3379                 data->REG_FAN = IT87_REG_FAN_8665;
3380                 data->REG_FANX = IT87_REG_FANX_8665;
3381                 data->REG_FAN_MIN = IT87_REG_FAN_MIN_8665;
3382                 data->REG_FANX_MIN = IT87_REG_FANX_MIN_8665;
3383                 data->REG_PWM = IT87_REG_PWM_8665;
3384                 data->REG_TEMP_OFFSET = IT87_REG_TEMP_OFFSET;
3385                 data->REG_TEMP_LOW = IT87_REG_TEMP_LOW;
3386                 data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH;
3387                 break;
3388         case it8622:
3389                 data->REG_FAN = IT87_REG_FAN;
3390                 data->REG_FANX = IT87_REG_FANX;
3391                 data->REG_FAN_MIN = IT87_REG_FAN_MIN;
3392                 data->REG_FANX_MIN = IT87_REG_FANX_MIN;
3393                 data->REG_PWM = IT87_REG_PWM_8665;
3394                 data->REG_TEMP_OFFSET = IT87_REG_TEMP_OFFSET;
3395                 data->REG_TEMP_LOW = IT87_REG_TEMP_LOW;
3396                 data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH;
3397                 break;
3398         case it8613:
3399                 data->REG_FAN = IT87_REG_FAN;
3400                 data->REG_FANX = IT87_REG_FANX;
3401                 data->REG_FAN_MIN = IT87_REG_FAN_MIN;
3402                 data->REG_FANX_MIN = IT87_REG_FANX_MIN;
3403                 data->REG_PWM = IT87_REG_PWM_8665;
3404                 data->REG_TEMP_OFFSET = IT87_REG_TEMP_OFFSET;
3405                 data->REG_TEMP_LOW = IT87_REG_TEMP_LOW;
3406                 data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH;
3407                 break;
3408         default:
3409                 data->REG_FAN = IT87_REG_FAN;
3410                 data->REG_FANX = IT87_REG_FANX;
3411                 data->REG_FAN_MIN = IT87_REG_FAN_MIN;
3412                 data->REG_FANX_MIN = IT87_REG_FANX_MIN;
3413                 data->REG_PWM = IT87_REG_PWM;
3414                 data->REG_TEMP_OFFSET = IT87_REG_TEMP_OFFSET;
3415                 data->REG_TEMP_LOW = IT87_REG_TEMP_LOW;
3416                 data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH;
3417                 break;
3418         }
3419 }
3420
3421 /* Called when we have found a new IT87. */
3422 static void it87_init_device(struct platform_device *pdev)
3423 {
3424         struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
3425         struct it87_data *data = platform_get_drvdata(pdev);
3426         int tmp, i;
3427         u8 mask;
3428
3429         /*
3430          * For each PWM channel:
3431          * - If it is in automatic mode, setting to manual mode should set
3432          *   the fan to full speed by default.
3433          * - If it is in manual mode, we need a mapping to temperature
3434          *   channels to use when later setting to automatic mode later.
3435          *   Use a 1:1 mapping by default (we are clueless.)
3436          * In both cases, the value can (and should) be changed by the user
3437          * prior to switching to a different mode.
3438          * Note that this is no longer needed for the IT8721F and later, as
3439          * these have separate registers for the temperature mapping and the
3440          * manual duty cycle.
3441          */
3442         for (i = 0; i < NUM_AUTO_PWM; i++) {
3443                 data->pwm_temp_map[i] = i;
3444                 data->pwm_duty[i] = 0x7f;       /* Full speed */
3445                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
3446         }
3447
3448         /*
3449          * Some chips seem to have default value 0xff for all limit
3450          * registers. For low voltage limits it makes no sense and triggers
3451          * alarms, so change to 0 instead. For high temperature limits, it
3452          * means -1 degree C, which surprisingly doesn't trigger an alarm,
3453          * but is still confusing, so change to 127 degrees C.
3454          */
3455         for (i = 0; i < NUM_VIN_LIMIT; i++) {
3456                 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
3457                 if (tmp == 0xff)
3458                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
3459         }
3460         for (i = 0; i < data->num_temp_limit; i++) {
3461                 tmp = it87_read_value(data, data->REG_TEMP_HIGH[i]);
3462                 if (tmp == 0xff)
3463                         it87_write_value(data, data->REG_TEMP_HIGH[i], 127);
3464         }
3465
3466         /*
3467          * Temperature channels are not forcibly enabled, as they can be
3468          * set to two different sensor types and we can't guess which one
3469          * is correct for a given system. These channels can be enabled at
3470          * run-time through the temp{1-3}_type sysfs accessors if needed.
3471          */
3472
3473         /* Check if voltage monitors are reset manually or by some reason */
3474         tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
3475         if ((tmp & 0xff) == 0) {
3476                 /* Enable all voltage monitors */
3477                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
3478         }
3479
3480         /* Check if tachometers are reset manually or by some reason */
3481         mask = 0x70 & ~(sio_data->skip_fan << 4);
3482         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
3483         if ((data->fan_main_ctrl & mask) == 0) {
3484                 /* Enable all fan tachometers */
3485                 data->fan_main_ctrl |= mask;
3486                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
3487                                  data->fan_main_ctrl);
3488         }
3489         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
3490
3491         tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
3492
3493         /* Set tachometers to 16-bit mode if needed */
3494         if (has_fan16_config(data)) {
3495                 if (~tmp & 0x07 & data->has_fan) {
3496                         dev_dbg(&pdev->dev,
3497                                 "Setting fan1-3 to 16-bit mode\n");
3498                         it87_write_value(data, IT87_REG_FAN_16BIT,
3499                                          tmp | 0x07);
3500                 }
3501         }
3502
3503         /* Check for additional fans */
3504         if (has_four_fans(data) && (tmp & BIT(4)))
3505                 data->has_fan |= BIT(3); /* fan4 enabled */
3506         if (has_five_fans(data) && (tmp & BIT(5)))
3507                 data->has_fan |= BIT(4); /* fan5 enabled */
3508         if (has_six_fans(data)) {
3509                 switch (data->type) {
3510                 case it8620:
3511                 case it8628:
3512                 case it8686:
3513                         if (tmp & BIT(2))
3514                                 data->has_fan |= BIT(5); /* fan6 enabled */
3515                         break;
3516                 case it8625:
3517                 case it8665:
3518                         tmp = it87_read_value(data, IT87_REG_FAN_DIV);
3519                         if (tmp & BIT(3))
3520                                 data->has_fan |= BIT(5); /* fan6 enabled */
3521                         break;
3522                 default:
3523                         break;
3524                 }
3525         }
3526
3527         /* Fan input pins may be used for alternative functions */
3528         data->has_fan &= ~sio_data->skip_fan;
3529
3530         /* Check if pwm6 is enabled */
3531         if (has_six_pwm(data)) {
3532                 switch (data->type) {
3533                 case it8620:
3534                 case it8686:
3535                         tmp = it87_read_value(data, IT87_REG_FAN_DIV);
3536                         if (!(tmp & BIT(3)))
3537                                 sio_data->skip_pwm |= BIT(5);
3538                         break;
3539                 default:
3540                         break;
3541                 }
3542         }
3543
3544         /* Start monitoring */
3545         it87_write_value(data, IT87_REG_CONFIG,
3546                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
3547                          | (update_vbat ? 0x41 : 0x01));
3548 }
3549
3550 /* Return 1 if and only if the PWM interface is safe to use */
3551 static int it87_check_pwm(struct device *dev)
3552 {
3553         struct it87_data *data = dev_get_drvdata(dev);
3554         /*
3555          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
3556          * and polarity set to active low is sign that this is the case so we
3557          * disable pwm control to protect the user.
3558          */
3559         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
3560
3561         if ((tmp & 0x87) == 0) {
3562                 if (fix_pwm_polarity) {
3563                         /*
3564                          * The user asks us to attempt a chip reconfiguration.
3565                          * This means switching to active high polarity and
3566                          * inverting all fan speed values.
3567                          */
3568                         int i;
3569                         u8 pwm[3];
3570
3571                         for (i = 0; i < ARRAY_SIZE(pwm); i++)
3572                                 pwm[i] = it87_read_value(data,
3573                                                          data->REG_PWM[i]);
3574
3575                         /*
3576                          * If any fan is in automatic pwm mode, the polarity
3577                          * might be correct, as suspicious as it seems, so we
3578                          * better don't change anything (but still disable the
3579                          * PWM interface).
3580                          */
3581                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
3582                                 dev_info(dev,
3583                                          "Reconfiguring PWM to active high polarity\n");
3584                                 it87_write_value(data, IT87_REG_FAN_CTL,
3585                                                  tmp | 0x87);
3586                                 for (i = 0; i < 3; i++)
3587                                         it87_write_value(data,
3588                                                          data->REG_PWM[i],
3589                                                          0x7f & ~pwm[i]);
3590                                 return 1;
3591                         }
3592
3593                         dev_info(dev,
3594                                  "PWM configuration is too broken to be fixed\n");
3595                 }
3596
3597                 dev_info(dev,
3598                          "Detected broken BIOS defaults, disabling PWM interface\n");
3599                 return 0;
3600         } else if (fix_pwm_polarity) {
3601                 dev_info(dev,
3602                          "PWM configuration looks sane, won't touch\n");
3603         }
3604
3605         return 1;
3606 }
3607
3608 static int it87_probe(struct platform_device *pdev)
3609 {
3610         struct it87_data *data;
3611         struct resource *res;
3612         struct device *dev = &pdev->dev;
3613         struct it87_sio_data *sio_data = dev_get_platdata(dev);
3614         int enable_pwm_interface;
3615         struct device *hwmon_dev;
3616
3617         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
3618         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
3619                                  DRVNAME)) {
3620                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
3621                         (unsigned long)res->start,
3622                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
3623                 return -EBUSY;
3624         }
3625
3626         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
3627         if (!data)
3628                 return -ENOMEM;
3629
3630         data->addr = res->start;
3631         data->type = sio_data->type;
3632         data->features = it87_devices[sio_data->type].features;
3633         data->num_temp_limit = it87_devices[sio_data->type].num_temp_limit;
3634         data->peci_mask = it87_devices[sio_data->type].peci_mask;
3635         data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
3636         data->bank = 0xff;
3637
3638         /*
3639          * IT8705F Datasheet 0.4.1, 3h == Version G.
3640          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
3641          * These are the first revisions with 16-bit tachometer support.
3642          */
3643         switch (data->type) {
3644         case it87:
3645                 if (sio_data->revision >= 0x03) {
3646                         data->features &= ~FEAT_OLD_AUTOPWM;
3647                         data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS;
3648                 }
3649                 break;
3650         case it8712:
3651                 if (sio_data->revision >= 0x08) {
3652                         data->features &= ~FEAT_OLD_AUTOPWM;
3653                         data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS |
3654                                           FEAT_FIVE_FANS;
3655                 }
3656                 break;
3657         default:
3658                 break;
3659         }
3660
3661         /* Now, we do the remaining detection. */
3662         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) ||
3663             it87_read_value(data, IT87_REG_CHIPID) != 0x90)
3664                 return -ENODEV;
3665
3666         platform_set_drvdata(pdev, data);
3667
3668         mutex_init(&data->update_lock);
3669
3670         /* Initialize register pointers */
3671         it87_init_regs(pdev);
3672
3673         /* Check PWM configuration */
3674         enable_pwm_interface = it87_check_pwm(dev);
3675
3676         /* Starting with IT8721F, we handle scaling of internal voltages */
3677         if (has_scaling(data)) {
3678                 if (sio_data->internal & BIT(0))
3679                         data->in_scaled |= BIT(3);      /* in3 is AVCC */
3680                 if (sio_data->internal & BIT(1))
3681                         data->in_scaled |= BIT(7);      /* in7 is VSB */
3682                 if (sio_data->internal & BIT(2))
3683                         data->in_scaled |= BIT(8);      /* in8 is Vbat */
3684                 if (sio_data->internal & BIT(3))
3685                         data->in_scaled |= BIT(9);      /* in9 is AVCC */
3686         } else if (sio_data->type == it8781 || sio_data->type == it8782 ||
3687                    sio_data->type == it8783) {
3688                 if (sio_data->internal & BIT(0))
3689                         data->in_scaled |= BIT(3);      /* in3 is VCC5V */
3690                 if (sio_data->internal & BIT(1))
3691                         data->in_scaled |= BIT(7);      /* in7 is VCCH5V */
3692         }
3693
3694         data->has_temp = 0x07;
3695         if (sio_data->skip_temp & BIT(2)) {
3696                 if (sio_data->type == it8782 &&
3697                     !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
3698                         data->has_temp &= ~BIT(2);
3699         }
3700
3701         data->in_internal = sio_data->internal;
3702         data->has_in = 0x3ff & ~sio_data->skip_in;
3703
3704         if (has_six_temp(data)) {
3705                 u8 reg = it87_read_value(data, IT87_REG_TEMP456_ENABLE);
3706
3707                 /* Check for additional temperature sensors */
3708                 if ((reg & 0x03) >= 0x02)
3709                         data->has_temp |= BIT(3);
3710                 if (((reg >> 2) & 0x03) >= 0x02)
3711                         data->has_temp |= BIT(4);
3712                 if (((reg >> 4) & 0x03) >= 0x02)
3713                         data->has_temp |= BIT(5);
3714
3715                 /* Check for additional voltage sensors */
3716                 if ((reg & 0x03) == 0x01)
3717                         data->has_in |= BIT(10);
3718                 if (((reg >> 2) & 0x03) == 0x01)
3719                         data->has_in |= BIT(11);
3720                 if (((reg >> 4) & 0x03) == 0x01)
3721                         data->has_in |= BIT(12);
3722         }
3723
3724         data->has_beep = !!sio_data->beep_pin;
3725
3726         /* Initialize the IT87 chip */
3727         it87_init_device(pdev);
3728
3729         if (!sio_data->skip_vid) {
3730                 data->has_vid = true;
3731                 data->vrm = vid_which_vrm();
3732                 /* VID reading from Super-I/O config space if available */
3733                 data->vid = sio_data->vid_value;
3734         }
3735
3736         /* Prepare for sysfs hooks */
3737         data->groups[0] = &it87_group;
3738         data->groups[1] = &it87_group_in;
3739         data->groups[2] = &it87_group_temp;
3740         data->groups[3] = &it87_group_fan;
3741
3742         if (enable_pwm_interface) {
3743                 data->has_pwm = BIT(ARRAY_SIZE(IT87_REG_PWM)) - 1;
3744                 data->has_pwm &= ~sio_data->skip_pwm;
3745
3746                 data->groups[4] = &it87_group_pwm;
3747                 if (has_old_autopwm(data) || has_newer_autopwm(data))
3748                         data->groups[5] = &it87_group_auto_pwm;
3749         }
3750
3751         hwmon_dev = devm_hwmon_device_register_with_groups(dev,
3752                                         it87_devices[sio_data->type].name,
3753                                         data, data->groups);
3754         return PTR_ERR_OR_ZERO(hwmon_dev);
3755 }
3756
3757 static struct platform_driver it87_driver = {
3758         .driver = {
3759                 .name   = DRVNAME,
3760         },
3761         .probe  = it87_probe,
3762 };
3763
3764 static int __init it87_device_add(int index, unsigned short address,
3765                                   const struct it87_sio_data *sio_data)
3766 {
3767         struct platform_device *pdev;
3768         struct resource res = {
3769                 .start  = address + IT87_EC_OFFSET,
3770                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
3771                 .name   = DRVNAME,
3772                 .flags  = IORESOURCE_IO,
3773         };
3774         int err;
3775
3776         err = acpi_check_resource_conflict(&res);
3777         if (err)
3778                 return err;
3779
3780         pdev = platform_device_alloc(DRVNAME, address);
3781         if (!pdev)
3782                 return -ENOMEM;
3783
3784         err = platform_device_add_resources(pdev, &res, 1);
3785         if (err) {
3786                 pr_err("Device resource addition failed (%d)\n", err);
3787                 goto exit_device_put;
3788         }
3789
3790         err = platform_device_add_data(pdev, sio_data,
3791                                        sizeof(struct it87_sio_data));
3792         if (err) {
3793                 pr_err("Platform data allocation failed\n");
3794                 goto exit_device_put;
3795         }
3796
3797         err = platform_device_add(pdev);
3798         if (err) {
3799                 pr_err("Device addition failed (%d)\n", err);
3800                 goto exit_device_put;
3801         }
3802
3803         it87_pdev[index] = pdev;
3804         return 0;
3805
3806 exit_device_put:
3807         platform_device_put(pdev);
3808         return err;
3809 }
3810
3811 struct it87_dmi_data {
3812         bool sio4e_broken;      /* SIO accesses @ 0x4e are broken       */
3813         char *sio_mutex;        /* SIO ACPI mutex                       */
3814         u8 skip_pwm;            /* pwm channels to skip for this board  */
3815 };
3816
3817 /*
3818  * On Gigabyte AB350 and AX370 boards, accesses to the Super-IO chip
3819  * at address 0x4e/0x4f can result in a system hang.
3820  * Accesses to address 0x2e/0x2f need to be mutex protected.
3821  */
3822 static struct it87_dmi_data gigabyte_ab350_gaming = {
3823         .sio4e_broken = true,
3824         .sio_mutex = "\\_SB.PCI0.SBRG.SIO1.MUT0",
3825 };
3826
3827 /*
3828  * On the Shuttle SN68PT, FAN_CTL2 is apparently not
3829  * connected to a fan, but to something else. One user
3830  * has reported instant system power-off when changing
3831  * the PWM2 duty cycle, so we disable it.
3832  * I use the board name string as the trigger in case
3833  * the same board is ever used in other systems.
3834  */
3835 static struct it87_dmi_data nvidia_fn68pt = {
3836         .skip_pwm = BIT(1),
3837 };
3838
3839 static const struct dmi_system_id it87_dmi_table[] __initconst = {
3840         {
3841                 .matches = {
3842                         DMI_MATCH(DMI_SYS_VENDOR, "Gigabyte Technology Co., Ltd."),
3843                         DMI_MATCH(DMI_BOARD_NAME, "AB350-Gaming-CF"),
3844                 },
3845                 .driver_data = &gigabyte_ab350_gaming,
3846         },
3847         {
3848                 .matches = {
3849                         DMI_MATCH(DMI_SYS_VENDOR, "Gigabyte Technology Co., Ltd."),
3850                         DMI_MATCH(DMI_BOARD_NAME, "AB350-Gaming 3-CF"),
3851                 },
3852                 .driver_data = &gigabyte_ab350_gaming,
3853         },
3854         {
3855                 .matches = {
3856                         DMI_MATCH(DMI_SYS_VENDOR, "Gigabyte Technology Co., Ltd."),
3857                         DMI_MATCH(DMI_BOARD_NAME, "AX370-Gaming K7"),
3858                 },
3859                 .driver_data = &gigabyte_ab350_gaming,
3860         },
3861         {
3862                 .matches = {
3863                         DMI_MATCH(DMI_SYS_VENDOR, "Gigabyte Technology Co., Ltd."),
3864                         DMI_MATCH(DMI_BOARD_NAME, "AX370-Gaming 5"),
3865                 },
3866                 .driver_data = &gigabyte_ab350_gaming,
3867         },
3868         {
3869                 .matches = {
3870                         DMI_MATCH(DMI_BOARD_VENDOR, "nVIDIA"),
3871                         DMI_MATCH(DMI_BOARD_NAME, "FN68PT"),
3872                 },
3873                 .driver_data = &nvidia_fn68pt,
3874         },
3875         { }
3876 };
3877
3878 static int __init sm_it87_init(void)
3879 {
3880         const struct dmi_system_id *dmi = dmi_first_match(it87_dmi_table);
3881         struct it87_dmi_data *dmi_data = NULL;
3882         int sioaddr[2] = { REG_2E, REG_4E };
3883         struct it87_sio_data sio_data;
3884         unsigned short isa_address;
3885         bool found = false;
3886         int i, err;
3887
3888         if (dmi)
3889                 dmi_data = dmi->driver_data;
3890
3891         if (dmi_data) {
3892                 it87_sio4e_broken = dmi_data->sio4e_broken;
3893 #ifdef __IT87_USE_ACPI_MUTEX
3894                 if (dmi_data->sio_mutex) {
3895                         static acpi_status status;
3896
3897                         status = acpi_get_handle(NULL, dmi_data->sio_mutex,
3898                                                  &it87_acpi_sio_handle);
3899                         if (ACPI_SUCCESS(status)) {
3900                                 it87_acpi_sio_mutex = dmi_data->sio_mutex;
3901                                 pr_debug("Found ACPI SIO mutex %s\n",
3902                                          dmi_data->sio_mutex);
3903                         } else {
3904                                 pr_warn("ACPI SIO mutex %s not found\n",
3905                                         dmi_data->sio_mutex);
3906                         }
3907                 }
3908 #endif /* __IT87_USE_ACPI_MUTEX */
3909         }
3910
3911         err = platform_driver_register(&it87_driver);
3912         if (err)
3913                 return err;
3914
3915         for (i = 0; i < ARRAY_SIZE(sioaddr); i++) {
3916                 /*
3917                  * Accessing the second Super-IO chi can result in board
3918                  * hangs. Disable until we figure out what is going on.
3919                  */
3920                 if (it87_sio4e_broken && sioaddr[i] == 0x4e)
3921                         continue;
3922                 memset(&sio_data, 0, sizeof(struct it87_sio_data));
3923                 isa_address = 0;
3924                 err = it87_find(sioaddr[i], &isa_address, &sio_data);
3925                 if (err || isa_address == 0)
3926                         continue;
3927
3928                 if (dmi_data)
3929                         sio_data.skip_pwm |= dmi_data->skip_pwm;
3930                 err = it87_device_add(i, isa_address, &sio_data);
3931                 if (err)
3932                         goto exit_dev_unregister;
3933                 found = true;
3934         }
3935
3936         if (!found) {
3937                 err = -ENODEV;
3938                 goto exit_unregister;
3939         }
3940         return 0;
3941
3942 exit_dev_unregister:
3943         /* NULL check handled by platform_device_unregister */
3944         platform_device_unregister(it87_pdev[0]);
3945 exit_unregister:
3946         platform_driver_unregister(&it87_driver);
3947         return err;
3948 }
3949
3950 static void __exit sm_it87_exit(void)
3951 {
3952         /* NULL check handled by platform_device_unregister */
3953         platform_device_unregister(it87_pdev[1]);
3954         platform_device_unregister(it87_pdev[0]);
3955         platform_driver_unregister(&it87_driver);
3956 }
3957
3958 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
3959 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
3960 module_param(update_vbat, bool, 0);
3961 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
3962 module_param(fix_pwm_polarity, bool, 0);
3963 MODULE_PARM_DESC(fix_pwm_polarity,
3964                  "Force PWM polarity to active high (DANGEROUS)");
3965 MODULE_LICENSE("GPL");
3966
3967 module_init(sm_it87_init);
3968 module_exit(sm_it87_exit);