drivers/hwmon/it87.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  it87.c - Part of lm_sensors, Linux kernel modules for hardware
   4  *           monitoring.
   5  *
   6  *  The IT8705F is an LPC-based Super I/O part that contains UARTs, a
   7  *  parallel port, an IR port, a MIDI port, a floppy controller, etc., in
   8  *  addition to an Environment Controller (Enhanced Hardware Monitor and
   9  *  Fan Controller)
  10  *
  11  *  This driver supports only the Environment Controller in the IT8705F and
  12  *  similar parts.  The other devices are supported by different drivers.
  13  *
  14  *  Supports: IT8603E  Super I/O chip w/LPC interface
  15  *            IT8620E  Super I/O chip w/LPC interface
  16  *            IT8622E  Super I/O chip w/LPC interface
  17  *            IT8623E  Super I/O chip w/LPC interface
  18  *            IT8628E  Super I/O chip w/LPC interface
  19  *            IT8705F  Super I/O chip w/LPC interface
  20  *            IT8712F  Super I/O chip w/LPC interface
  21  *            IT8716F  Super I/O chip w/LPC interface
  22  *            IT8718F  Super I/O chip w/LPC interface
  23  *            IT8720F  Super I/O chip w/LPC interface
  24  *            IT8721F  Super I/O chip w/LPC interface
  25  *            IT8726F  Super I/O chip w/LPC interface
  26  *            IT8728F  Super I/O chip w/LPC interface
  27  *            IT8732F  Super I/O chip w/LPC interface
  28  *            IT8758E  Super I/O chip w/LPC interface
  29  *            IT8771E  Super I/O chip w/LPC interface
  30  *            IT8772E  Super I/O chip w/LPC interface
  31  *            IT8781F  Super I/O chip w/LPC interface
  32  *            IT8782F  Super I/O chip w/LPC interface
  33  *            IT8783E/F Super I/O chip w/LPC interface
  34  *            IT8786E  Super I/O chip w/LPC interface
  35  *            IT8790E  Super I/O chip w/LPC interface
  36  *            IT8792E  Super I/O chip w/LPC interface
  37  *            Sis950   A clone of the IT8705F
  38  *
  39  *  Copyright (C) 2001 Chris Gauthron
  40  *  Copyright (C) 2005-2010 Jean Delvare <[email protected]>
  41  */
  42
  43 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  44
  45 #include <linux/bitops.h>
  46 #include <linux/module.h>
  47 #include <linux/init.h>
  48 #include <linux/slab.h>
  49 #include <linux/jiffies.h>
  50 #include <linux/platform_device.h>
  51 #include <linux/hwmon.h>
  52 #include <linux/hwmon-sysfs.h>
  53 #include <linux/hwmon-vid.h>
  54 #include <linux/err.h>
  55 #include <linux/mutex.h>
  56 #include <linux/sysfs.h>
  57 #include <linux/string.h>
  58 #include <linux/dmi.h>
  59 #include <linux/acpi.h>
  60 #include <linux/io.h>
  61
  62 #define DRVNAME "it87"
  63
  64 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
  65              it8771, it8772, it8781, it8782, it8783, it8786, it8790,
  66              it8792, it8603, it8620, it8622, it8628 };
  67
  68 static unsigned short force_id;
  69 module_param(force_id, ushort, 0);
  70 MODULE_PARM_DESC(force_id, "Override the detected device ID");
  71
  72 static bool ignore_resource_conflict;
  73 module_param(ignore_resource_conflict, bool, 0);
  74 MODULE_PARM_DESC(ignore_resource_conflict, "Ignore ACPI resource conflict");
  75
  76 static struct platform_device *it87_pdev[2];
  77
  78 #define REG_2E  0x2e    /* The register to read/write */
  79 #define REG_4E  0x4e    /* Secondary register to read/write */
  80
  81 #define DEV     0x07    /* Register: Logical device select */
  82 #define PME     0x04    /* The device with the fan registers in it */
  83
  84 /* The device with the IT8718F/IT8720F VID value in it */
  85 #define GPIO    0x07
  86
  87 #define DEVID   0x20    /* Register: Device ID */
  88 #define DEVREV  0x22    /* Register: Device Revision */
  89
  90 static inline int superio_inb(int ioreg, int reg)
  91 {
  92         outb(reg, ioreg);
  93         return inb(ioreg + 1);
  94 }
  95
  96 static inline void superio_outb(int ioreg, int reg, int val)
  97 {
  98         outb(reg, ioreg);
  99         outb(val, ioreg + 1);
 100 }
 101
 102 static int superio_inw(int ioreg, int reg)
 103 {
 104         int val;
 105
 106         outb(reg++, ioreg);
 107         val = inb(ioreg + 1) << 8;
 108         outb(reg, ioreg);
 109         val |= inb(ioreg + 1);
 110         return val;
 111 }
 112
 113 static inline void superio_select(int ioreg, int ldn)
 114 {
 115         outb(DEV, ioreg);
 116         outb(ldn, ioreg + 1);
 117 }
 118
 119 static inline int superio_enter(int ioreg)
 120 {
 121         /*
 122          * Try to reserve ioreg and ioreg + 1 for exclusive access.
 123          */
 124         if (!request_muxed_region(ioreg, 2, DRVNAME))
 125                 return -EBUSY;
 126
 127         outb(0x87, ioreg);
 128         outb(0x01, ioreg);
 129         outb(0x55, ioreg);
 130         outb(ioreg == REG_4E ? 0xaa : 0x55, ioreg);
 131         return 0;
 132 }
 133
 134 static inline void superio_exit(int ioreg)
 135 {
 136         outb(0x02, ioreg);
 137         outb(0x02, ioreg + 1);
 138         release_region(ioreg, 2);
 139 }
 140
 141 /* Logical device 4 registers */
 142 #define IT8712F_DEVID 0x8712
 143 #define IT8705F_DEVID 0x8705
 144 #define IT8716F_DEVID 0x8716
 145 #define IT8718F_DEVID 0x8718
 146 #define IT8720F_DEVID 0x8720
 147 #define IT8721F_DEVID 0x8721
 148 #define IT8726F_DEVID 0x8726
 149 #define IT8728F_DEVID 0x8728
 150 #define IT8732F_DEVID 0x8732
 151 #define IT8792E_DEVID 0x8733
 152 #define IT8771E_DEVID 0x8771
 153 #define IT8772E_DEVID 0x8772
 154 #define IT8781F_DEVID 0x8781
 155 #define IT8782F_DEVID 0x8782
 156 #define IT8783E_DEVID 0x8783
 157 #define IT8786E_DEVID 0x8786
 158 #define IT8790E_DEVID 0x8790
 159 #define IT8603E_DEVID 0x8603
 160 #define IT8620E_DEVID 0x8620
 161 #define IT8622E_DEVID 0x8622
 162 #define IT8623E_DEVID 0x8623
 163 #define IT8628E_DEVID 0x8628
 164 #define IT87_ACT_REG  0x30
 165 #define IT87_BASE_REG 0x60
 166
 167 /* Logical device 7 registers (IT8712F and later) */
 168 #define IT87_SIO_GPIO1_REG      0x25
 169 #define IT87_SIO_GPIO2_REG      0x26
 170 #define IT87_SIO_GPIO3_REG      0x27
 171 #define IT87_SIO_GPIO4_REG      0x28
 172 #define IT87_SIO_GPIO5_REG      0x29
 173 #define IT87_SIO_PINX1_REG      0x2a    /* Pin selection */
 174 #define IT87_SIO_PINX2_REG      0x2c    /* Pin selection */
 175 #define IT87_SIO_SPI_REG        0xef    /* SPI function pin select */
 176 #define IT87_SIO_VID_REG        0xfc    /* VID value */
 177 #define IT87_SIO_BEEP_PIN_REG   0xf6    /* Beep pin mapping */
 178
 179 /* Update battery voltage after every reading if true */
 180 static bool update_vbat;
 181
 182 /* Not all BIOSes properly configure the PWM registers */
 183 static bool fix_pwm_polarity;
 184
 185 /* Many IT87 constants specified below */
 186
 187 /* Length of ISA address segment */
 188 #define IT87_EXTENT 8
 189
 190 /* Length of ISA address segment for Environmental Controller */
 191 #define IT87_EC_EXTENT 2
 192
 193 /* Offset of EC registers from ISA base address */
 194 #define IT87_EC_OFFSET 5
 195
 196 /* Where are the ISA address/data registers relative to the EC base address */
 197 #define IT87_ADDR_REG_OFFSET 0
 198 #define IT87_DATA_REG_OFFSET 1
 199
 200 /*----- The IT87 registers -----*/
 201
 202 #define IT87_REG_CONFIG        0x00
 203
 204 #define IT87_REG_ALARM1        0x01
 205 #define IT87_REG_ALARM2        0x02
 206 #define IT87_REG_ALARM3        0x03
 207
 208 /*
 209  * The IT8718F and IT8720F have the VID value in a different register, in
 210  * Super-I/O configuration space.
 211  */
 212 #define IT87_REG_VID           0x0a
 213 /*
 214  * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
 215  * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
 216  * mode.
 217  */
 218 #define IT87_REG_FAN_DIV       0x0b
 219 #define IT87_REG_FAN_16BIT     0x0c
 220
 221 /*
 222  * Monitors:
 223  * - up to 13 voltage (0 to 7, battery, avcc, 10 to 12)
 224  * - up to 6 temp (1 to 6)
 225  * - up to 6 fan (1 to 6)
 226  */
 227
 228 static const u8 IT87_REG_FAN[]         = { 0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x4c };
 229 static const u8 IT87_REG_FAN_MIN[]     = { 0x10, 0x11, 0x12, 0x84, 0x86, 0x4e };
 230 static const u8 IT87_REG_FANX[]        = { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d };
 231 static const u8 IT87_REG_FANX_MIN[]    = { 0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f };
 232 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 };
 233
 234 #define IT87_REG_FAN_MAIN_CTRL 0x13
 235 #define IT87_REG_FAN_CTL       0x14
 236 static const u8 IT87_REG_PWM[]         = { 0x15, 0x16, 0x17, 0x7f, 0xa7, 0xaf };
 237 static const u8 IT87_REG_PWM_DUTY[]    = { 0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab };
 238
 239 static const u8 IT87_REG_VIN[]  = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
 240                                     0x27, 0x28, 0x2f, 0x2c, 0x2d, 0x2e };
 241
 242 #define IT87_REG_TEMP(nr)      (0x29 + (nr))
 243
 244 #define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 245 #define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 246 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
 247 #define IT87_REG_TEMP_LOW(nr)  (0x41 + (nr) * 2)
 248
 249 #define IT87_REG_VIN_ENABLE    0x50
 250 #define IT87_REG_TEMP_ENABLE   0x51
 251 #define IT87_REG_TEMP_EXTRA    0x55
 252 #define IT87_REG_BEEP_ENABLE   0x5c
 253
 254 #define IT87_REG_CHIPID        0x58
 255
 256 static const u8 IT87_REG_AUTO_BASE[] = { 0x60, 0x68, 0x70, 0x78, 0xa0, 0xa8 };
 257
 258 #define IT87_REG_AUTO_TEMP(nr, i) (IT87_REG_AUTO_BASE[nr] + (i))
 259 #define IT87_REG_AUTO_PWM(nr, i)  (IT87_REG_AUTO_BASE[nr] + 5 + (i))
 260
 261 #define IT87_REG_TEMP456_ENABLE 0x77
 262
 263 #define NUM_VIN                 ARRAY_SIZE(IT87_REG_VIN)
 264 #define NUM_VIN_LIMIT           8
 265 #define NUM_TEMP                6
 266 #define NUM_TEMP_OFFSET         ARRAY_SIZE(IT87_REG_TEMP_OFFSET)
 267 #define NUM_TEMP_LIMIT          3
 268 #define NUM_FAN                 ARRAY_SIZE(IT87_REG_FAN)
 269 #define NUM_FAN_DIV             3
 270 #define NUM_PWM                 ARRAY_SIZE(IT87_REG_PWM)
 271 #define NUM_AUTO_PWM            ARRAY_SIZE(IT87_REG_PWM)
 272
 273 struct it87_devices {
 274         const char *name;
 275         const char * const suffix;
 276         u32 features;
 277         u8 peci_mask;
 278         u8 old_peci_mask;
 279 };
 280
 281 #define FEAT_12MV_ADC           BIT(0)
 282 #define FEAT_NEWER_AUTOPWM      BIT(1)
 283 #define FEAT_OLD_AUTOPWM        BIT(2)
 284 #define FEAT_16BIT_FANS         BIT(3)
 285 #define FEAT_TEMP_OFFSET        BIT(4)
 286 #define FEAT_TEMP_PECI          BIT(5)
 287 #define FEAT_TEMP_OLD_PECI      BIT(6)
 288 #define FEAT_FAN16_CONFIG       BIT(7)  /* Need to enable 16-bit fans */
 289 #define FEAT_FIVE_FANS          BIT(8)  /* Supports five fans */
 290 #define FEAT_VID                BIT(9)  /* Set if chip supports VID */
 291 #define FEAT_IN7_INTERNAL       BIT(10) /* Set if in7 is internal */
 292 #define FEAT_SIX_FANS           BIT(11) /* Supports six fans */
 293 #define FEAT_10_9MV_ADC         BIT(12)
 294 #define FEAT_AVCC3              BIT(13) /* Chip supports in9/AVCC3 */
 295 #define FEAT_FIVE_PWM           BIT(14) /* Chip supports 5 pwm chn */
 296 #define FEAT_SIX_PWM            BIT(15) /* Chip supports 6 pwm chn */
 297 #define FEAT_PWM_FREQ2          BIT(16) /* Separate pwm freq 2 */
 298 #define FEAT_SIX_TEMP           BIT(17) /* Up to 6 temp sensors */
 299 #define FEAT_VIN3_5V            BIT(18) /* VIN3 connected to +5V */
 300
 301 static const struct it87_devices it87_devices[] = {
 302         [it87] = {
 303                 .name = "it87",
 304                 .suffix = "F",
 305                 .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
 306         },
 307         [it8712] = {
 308                 .name = "it8712",
 309                 .suffix = "F",
 310                 .features = FEAT_OLD_AUTOPWM | FEAT_VID,
 311                                                 /* may need to overwrite */
 312         },
 313         [it8716] = {
 314                 .name = "it8716",
 315                 .suffix = "F",
 316                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 317                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_PWM_FREQ2,
 318         },
 319         [it8718] = {
 320                 .name = "it8718",
 321                 .suffix = "F",
 322                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 323                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
 324                   | FEAT_PWM_FREQ2,
 325                 .old_peci_mask = 0x4,
 326         },
 327         [it8720] = {
 328                 .name = "it8720",
 329                 .suffix = "F",
 330                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
 331                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
 332                   | FEAT_PWM_FREQ2,
 333                 .old_peci_mask = 0x4,
 334         },
 335         [it8721] = {
 336                 .name = "it8721",
 337                 .suffix = "F",
 338                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 339                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 340                   | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_IN7_INTERNAL
 341                   | FEAT_PWM_FREQ2,
 342                 .peci_mask = 0x05,
 343                 .old_peci_mask = 0x02,  /* Actually reports PCH */
 344         },
 345         [it8728] = {
 346                 .name = "it8728",
 347                 .suffix = "F",
 348                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 349                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
 350                   | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2,
 351                 .peci_mask = 0x07,
 352         },
 353         [it8732] = {
 354                 .name = "it8732",
 355                 .suffix = "F",
 356                 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
 357                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 358                   | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL,
 359                 .peci_mask = 0x07,
 360                 .old_peci_mask = 0x02,  /* Actually reports PCH */
 361         },
 362         [it8771] = {
 363                 .name = "it8771",
 364                 .suffix = "E",
 365                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 366                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 367                   | FEAT_PWM_FREQ2,
 368                                 /* PECI: guesswork */
 369                                 /* 12mV ADC (OHM) */
 370                                 /* 16 bit fans (OHM) */
 371                                 /* three fans, always 16 bit (guesswork) */
 372                 .peci_mask = 0x07,
 373         },
 374         [it8772] = {
 375                 .name = "it8772",
 376                 .suffix = "E",
 377                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 378                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 379                   | FEAT_PWM_FREQ2,
 380                                 /* PECI (coreboot) */
 381                                 /* 12mV ADC (HWSensors4, OHM) */
 382                                 /* 16 bit fans (HWSensors4, OHM) */
 383                                 /* three fans, always 16 bit (datasheet) */
 384                 .peci_mask = 0x07,
 385         },
 386         [it8781] = {
 387                 .name = "it8781",
 388                 .suffix = "F",
 389                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 390                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
 391                 .old_peci_mask = 0x4,
 392         },
 393         [it8782] = {
 394                 .name = "it8782",
 395                 .suffix = "F",
 396                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 397                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
 398                 .old_peci_mask = 0x4,
 399         },
 400         [it8783] = {
 401                 .name = "it8783",
 402                 .suffix = "E/F",
 403                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 404                   | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
 405                 .old_peci_mask = 0x4,
 406         },
 407         [it8786] = {
 408                 .name = "it8786",
 409                 .suffix = "E",
 410                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 411                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 412                   | FEAT_PWM_FREQ2,
 413                 .peci_mask = 0x07,
 414         },
 415         [it8790] = {
 416                 .name = "it8790",
 417                 .suffix = "E",
 418                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 419                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 420                   | FEAT_PWM_FREQ2,
 421                 .peci_mask = 0x07,
 422         },
 423         [it8792] = {
 424                 .name = "it8792",
 425                 .suffix = "E",
 426                 .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
 427                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
 428                   | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL,
 429                 .peci_mask = 0x07,
 430                 .old_peci_mask = 0x02,  /* Actually reports PCH */
 431         },
 432         [it8603] = {
 433                 .name = "it8603",
 434                 .suffix = "E",
 435                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 436                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
 437                   | FEAT_AVCC3 | FEAT_PWM_FREQ2,
 438                 .peci_mask = 0x07,
 439         },
 440         [it8620] = {
 441                 .name = "it8620",
 442                 .suffix = "E",
 443                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 444                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
 445                   | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
 446                   | FEAT_SIX_TEMP | FEAT_VIN3_5V,
 447                 .peci_mask = 0x07,
 448         },
 449         [it8622] = {
 450                 .name = "it8622",
 451                 .suffix = "E",
 452                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 453                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
 454                   | FEAT_FIVE_PWM | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
 455                   | FEAT_AVCC3 | FEAT_VIN3_5V,
 456                 .peci_mask = 0x07,
 457         },
 458         [it8628] = {
 459                 .name = "it8628",
 460                 .suffix = "E",
 461                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 462                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
 463                   | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
 464                   | FEAT_SIX_TEMP | FEAT_VIN3_5V,
 465                 .peci_mask = 0x07,
 466         },
 467 };
 468
 469 #define has_16bit_fans(data)    ((data)->features & FEAT_16BIT_FANS)
 470 #define has_12mv_adc(data)      ((data)->features & FEAT_12MV_ADC)
 471 #define has_10_9mv_adc(data)    ((data)->features & FEAT_10_9MV_ADC)
 472 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
 473 #define has_old_autopwm(data)   ((data)->features & FEAT_OLD_AUTOPWM)
 474 #define has_temp_offset(data)   ((data)->features & FEAT_TEMP_OFFSET)
 475 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
 476                                  ((data)->peci_mask & BIT(nr)))
 477 #define has_temp_old_peci(data, nr) \
 478                                 (((data)->features & FEAT_TEMP_OLD_PECI) && \
 479                                  ((data)->old_peci_mask & BIT(nr)))
 480 #define has_fan16_config(data)  ((data)->features & FEAT_FAN16_CONFIG)
 481 #define has_five_fans(data)     ((data)->features & (FEAT_FIVE_FANS | \
 482                                                      FEAT_SIX_FANS))
 483 #define has_vid(data)           ((data)->features & FEAT_VID)
 484 #define has_in7_internal(data)  ((data)->features & FEAT_IN7_INTERNAL)
 485 #define has_six_fans(data)      ((data)->features & FEAT_SIX_FANS)
 486 #define has_avcc3(data)         ((data)->features & FEAT_AVCC3)
 487 #define has_five_pwm(data)      ((data)->features & (FEAT_FIVE_PWM \
 488                                                      | FEAT_SIX_PWM))
 489 #define has_six_pwm(data)       ((data)->features & FEAT_SIX_PWM)
 490 #define has_pwm_freq2(data)     ((data)->features & FEAT_PWM_FREQ2)
 491 #define has_six_temp(data)      ((data)->features & FEAT_SIX_TEMP)
 492 #define has_vin3_5v(data)       ((data)->features & FEAT_VIN3_5V)
 493
 494 struct it87_sio_data {
 495         int sioaddr;
 496         enum chips type;
 497         /* Values read from Super-I/O config space */
 498         u8 revision;
 499         u8 vid_value;
 500         u8 beep_pin;
 501         u8 internal;    /* Internal sensors can be labeled */
 502         bool need_in7_reroute;
 503         /* Features skipped based on config or DMI */
 504         u16 skip_in;
 505         u8 skip_vid;
 506         u8 skip_fan;
 507         u8 skip_pwm;
 508         u8 skip_temp;
 509 };
 510
 511 /*
 512  * For each registered chip, we need to keep some data in memory.
 513  * The structure is dynamically allocated.
 514  */
 515 struct it87_data {
 516         const struct attribute_group *groups[7];
 517         int sioaddr;
 518         enum chips type;
 519         u32 features;
 520         u8 peci_mask;
 521         u8 old_peci_mask;
 522
 523         unsigned short addr;
 524         const char *name;
 525         struct mutex update_lock;
 526         bool valid;             /* true if following fields are valid */
 527         unsigned long last_updated;     /* In jiffies */
 528
 529         u16 in_scaled;          /* Internal voltage sensors are scaled */
 530         u16 in_internal;        /* Bitfield, internal sensors (for labels) */
 531         u16 has_in;             /* Bitfield, voltage sensors enabled */
 532         u8 in[NUM_VIN][3];              /* [nr][0]=in, [1]=min, [2]=max */
 533         bool need_in7_reroute;
 534         u8 has_fan;             /* Bitfield, fans enabled */
 535         u16 fan[NUM_FAN][2];    /* Register values, [nr][0]=fan, [1]=min */
 536         u8 has_temp;            /* Bitfield, temp sensors enabled */
 537         s8 temp[NUM_TEMP][4];   /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 538         u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
 539         u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
 540         u8 fan_div[NUM_FAN_DIV];/* Register encoding, shifted right */
 541         bool has_vid;           /* True if VID supported */
 542         u8 vid;                 /* Register encoding, combined */
 543         u8 vrm;
 544         u32 alarms;             /* Register encoding, combined */
 545         bool has_beep;          /* true if beep supported */
 546         u8 beeps;               /* Register encoding */
 547         u8 fan_main_ctrl;       /* Register value */
 548         u8 fan_ctl;             /* Register value */
 549
 550         /*
 551          * The following 3 arrays correspond to the same registers up to
 552          * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 553          * 7, and we want to preserve settings on mode changes, so we have
 554          * to track all values separately.
 555          * Starting with the IT8721F, the manual PWM duty cycles are stored
 556          * in separate registers (8-bit values), so the separate tracking
 557          * is no longer needed, but it is still done to keep the driver
 558          * simple.
 559          */
 560         u8 has_pwm;             /* Bitfield, pwm control enabled */
 561         u8 pwm_ctrl[NUM_PWM];   /* Register value */
 562         u8 pwm_duty[NUM_PWM];   /* Manual PWM value set by user */
 563         u8 pwm_temp_map[NUM_PWM];/* PWM to temp. chan. mapping (bits 1-0) */
 564
 565         /* Automatic fan speed control registers */
 566         u8 auto_pwm[NUM_AUTO_PWM][4];   /* [nr][3] is hard-coded */
 567         s8 auto_temp[NUM_AUTO_PWM][5];  /* [nr][0] is point1_temp_hyst */
 568 };
 569
 570 /* Board specific settings from DMI matching */
 571 struct it87_dmi_data {
 572         u8 skip_pwm;            /* pwm channels to skip for this board  */
 573 };
 574
 575 /* Global for results from DMI matching, if needed */
 576 static struct it87_dmi_data *dmi_data;
 577
 578 static int adc_lsb(const struct it87_data *data, int nr)
 579 {
 580         int lsb;
 581
 582         if (has_12mv_adc(data))
 583                 lsb = 120;
 584         else if (has_10_9mv_adc(data))
 585                 lsb = 109;
 586         else
 587                 lsb = 160;
 588         if (data->in_scaled & BIT(nr))
 589                 lsb <<= 1;
 590         return lsb;
 591 }
 592
 593 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 594 {
 595         val = DIV_ROUND_CLOSEST(val * 10, adc_lsb(data, nr));
 596         return clamp_val(val, 0, 255);
 597 }
 598
 599 static int in_from_reg(const struct it87_data *data, int nr, int val)
 600 {
 601         return DIV_ROUND_CLOSEST(val * adc_lsb(data, nr), 10);
 602 }
 603
 604 static inline u8 FAN_TO_REG(long rpm, int div)
 605 {
 606         if (rpm == 0)
 607                 return 255;
 608         rpm = clamp_val(rpm, 1, 1000000);
 609         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 610 }
 611
 612 static inline u16 FAN16_TO_REG(long rpm)
 613 {
 614         if (rpm == 0)
 615                 return 0xffff;
 616         return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 617 }
 618
 619 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 620                                 1350000 / ((val) * (div)))
 621 /* The divider is fixed to 2 in 16-bit mode */
 622 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 623                              1350000 / ((val) * 2))
 624
 625 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
 626                                     ((val) + 500) / 1000), -128, 127))
 627 #define TEMP_FROM_REG(val) ((val) * 1000)
 628
 629 static u8 pwm_to_reg(const struct it87_data *data, long val)
 630 {
 631         if (has_newer_autopwm(data))
 632                 return val;
 633         else
 634                 return val >> 1;
 635 }
 636
 637 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 638 {
 639         if (has_newer_autopwm(data))
 640                 return reg;
 641         else
 642                 return (reg & 0x7f) << 1;
 643 }
 644
 645 static int DIV_TO_REG(int val)
 646 {
 647         int answer = 0;
 648
 649         while (answer < 7 && (val >>= 1))
 650                 answer++;
 651         return answer;
 652 }
 653
 654 #define DIV_FROM_REG(val) BIT(val)
 655
 656 /*
 657  * PWM base frequencies. The frequency has to be divided by either 128 or 256,
 658  * depending on the chip type, to calculate the actual PWM frequency.
 659  *
 660  * Some of the chip datasheets suggest a base frequency of 51 kHz instead
 661  * of 750 kHz for the slowest base frequency, resulting in a PWM frequency
 662  * of 200 Hz. Sometimes both PWM frequency select registers are affected,
 663  * sometimes just one. It is unknown if this is a datasheet error or real,
 664  * so this is ignored for now.
 665  */
 666 static const unsigned int pwm_freq[8] = {
 667         48000000,
 668         24000000,
 669         12000000,
 670         8000000,
 671         6000000,
 672         3000000,
 673         1500000,
 674         750000,
 675 };
 676
 677 /*
 678  * Must be called with data->update_lock held, except during initialization.
 679  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
 680  * would slow down the IT87 access and should not be necessary.
 681  */
 682 static int it87_read_value(struct it87_data *data, u8 reg)
 683 {
 684         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
 685         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
 686 }
 687
 688 /*
 689  * Must be called with data->update_lock held, except during initialization.
 690  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
 691  * would slow down the IT87 access and should not be necessary.
 692  */
 693 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
 694 {
 695         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
 696         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
 697 }
 698
 699 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
 700 {
 701         data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM[nr]);
 702         if (has_newer_autopwm(data)) {
 703                 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
 704                 data->pwm_duty[nr] = it87_read_value(data,
 705                                                      IT87_REG_PWM_DUTY[nr]);
 706         } else {
 707                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
 708                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
 709                 else                            /* Manual mode */
 710                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
 711         }
 712
 713         if (has_old_autopwm(data)) {
 714                 int i;
 715
 716                 for (i = 0; i < 5 ; i++)
 717                         data->auto_temp[nr][i] = it87_read_value(data,
 718                                                 IT87_REG_AUTO_TEMP(nr, i));
 719                 for (i = 0; i < 3 ; i++)
 720                         data->auto_pwm[nr][i] = it87_read_value(data,
 721                                                 IT87_REG_AUTO_PWM(nr, i));
 722         } else if (has_newer_autopwm(data)) {
 723                 int i;
 724
 725                 /*
 726                  * 0: temperature hysteresis (base + 5)
 727                  * 1: fan off temperature (base + 0)
 728                  * 2: fan start temperature (base + 1)
 729                  * 3: fan max temperature (base + 2)
 730                  */
 731                 data->auto_temp[nr][0] =
 732                         it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 5));
 733
 734                 for (i = 0; i < 3 ; i++)
 735                         data->auto_temp[nr][i + 1] =
 736                                 it87_read_value(data,
 737                                                 IT87_REG_AUTO_TEMP(nr, i));
 738                 /*
 739                  * 0: start pwm value (base + 3)
 740                  * 1: pwm slope (base + 4, 1/8th pwm)
 741                  */
 742                 data->auto_pwm[nr][0] =
 743                         it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 3));
 744                 data->auto_pwm[nr][1] =
 745                         it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 4));
 746         }
 747 }
 748
 749 static struct it87_data *it87_update_device(struct device *dev)
 750 {
 751         struct it87_data *data = dev_get_drvdata(dev);
 752         int i;
 753
 754         mutex_lock(&data->update_lock);
 755
 756         if (time_after(jiffies, data->last_updated + HZ + HZ / 2) ||
 757             !data->valid) {
 758                 if (update_vbat) {
 759                         /*
 760                          * Cleared after each update, so reenable.  Value
 761                          * returned by this read will be previous value
 762                          */
 763                         it87_write_value(data, IT87_REG_CONFIG,
 764                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
 765                 }
 766                 for (i = 0; i < NUM_VIN; i++) {
 767                         if (!(data->has_in & BIT(i)))
 768                                 continue;
 769
 770                         data->in[i][0] =
 771                                 it87_read_value(data, IT87_REG_VIN[i]);
 772
 773                         /* VBAT and AVCC don't have limit registers */
 774                         if (i >= NUM_VIN_LIMIT)
 775                                 continue;
 776
 777                         data->in[i][1] =
 778                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
 779                         data->in[i][2] =
 780                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
 781                 }
 782
 783                 for (i = 0; i < NUM_FAN; i++) {
 784                         /* Skip disabled fans */
 785                         if (!(data->has_fan & BIT(i)))
 786                                 continue;
 787
 788                         data->fan[i][1] =
 789                                 it87_read_value(data, IT87_REG_FAN_MIN[i]);
 790                         data->fan[i][0] = it87_read_value(data,
 791                                        IT87_REG_FAN[i]);
 792                         /* Add high byte if in 16-bit mode */
 793                         if (has_16bit_fans(data)) {
 794                                 data->fan[i][0] |= it87_read_value(data,
 795                                                 IT87_REG_FANX[i]) << 8;
 796                                 data->fan[i][1] |= it87_read_value(data,
 797                                                 IT87_REG_FANX_MIN[i]) << 8;
 798                         }
 799                 }
 800                 for (i = 0; i < NUM_TEMP; i++) {
 801                         if (!(data->has_temp & BIT(i)))
 802                                 continue;
 803                         data->temp[i][0] =
 804                                 it87_read_value(data, IT87_REG_TEMP(i));
 805
 806                         if (has_temp_offset(data) && i < NUM_TEMP_OFFSET)
 807                                 data->temp[i][3] =
 808                                   it87_read_value(data,
 809                                                   IT87_REG_TEMP_OFFSET[i]);
 810
 811                         if (i >= NUM_TEMP_LIMIT)
 812                                 continue;
 813
 814                         data->temp[i][1] =
 815                                 it87_read_value(data, IT87_REG_TEMP_LOW(i));
 816                         data->temp[i][2] =
 817                                 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
 818                 }
 819
 820                 /* Newer chips don't have clock dividers */
 821                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
 822                         i = it87_read_value(data, IT87_REG_FAN_DIV);
 823                         data->fan_div[0] = i & 0x07;
 824                         data->fan_div[1] = (i >> 3) & 0x07;
 825                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
 826                 }
 827
 828                 data->alarms =
 829                         it87_read_value(data, IT87_REG_ALARM1) |
 830                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
 831                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
 832                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 833
 834                 data->fan_main_ctrl = it87_read_value(data,
 835                                 IT87_REG_FAN_MAIN_CTRL);
 836                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
 837                 for (i = 0; i < NUM_PWM; i++) {
 838                         if (!(data->has_pwm & BIT(i)))
 839                                 continue;
 840                         it87_update_pwm_ctrl(data, i);
 841                 }
 842
 843                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 844                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
 845                 /*
 846                  * The IT8705F does not have VID capability.
 847                  * The IT8718F and later don't use IT87_REG_VID for the
 848                  * same purpose.
 849                  */
 850                 if (data->type == it8712 || data->type == it8716) {
 851                         data->vid = it87_read_value(data, IT87_REG_VID);
 852                         /*
 853                          * The older IT8712F revisions had only 5 VID pins,
 854                          * but we assume it is always safe to read 6 bits.
 855                          */
 856                         data->vid &= 0x3f;
 857                 }
 858                 data->last_updated = jiffies;
 859                 data->valid = true;
 860         }
 861
 862         mutex_unlock(&data->update_lock);
 863
 864         return data;
 865 }
 866
 867 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 868                        char *buf)
 869 {
 870         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 871         struct it87_data *data = it87_update_device(dev);
 872         int index = sattr->index;
 873         int nr = sattr->nr;
 874
 875         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 876 }
 877
 878 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
 879                       const char *buf, size_t count)
 880 {
 881         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 882         struct it87_data *data = dev_get_drvdata(dev);
 883         int index = sattr->index;
 884         int nr = sattr->nr;
 885         unsigned long val;
 886
 887         if (kstrtoul(buf, 10, &val) < 0)
 888                 return -EINVAL;
 889
 890         mutex_lock(&data->update_lock);
 891         data->in[nr][index] = in_to_reg(data, nr, val);
 892         it87_write_value(data,
 893                          index == 1 ? IT87_REG_VIN_MIN(nr)
 894                                     : IT87_REG_VIN_MAX(nr),
 895                          data->in[nr][index]);
 896         mutex_unlock(&data->update_lock);
 897         return count;
 898 }
 899
 900 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 901 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 902                             0, 1);
 903 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 904                             0, 2);
 905
 906 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 907 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 908                             1, 1);
 909 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 910                             1, 2);
 911
 912 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 913 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 914                             2, 1);
 915 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 916                             2, 2);
 917
 918 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 919 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 920                             3, 1);
 921 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 922                             3, 2);
 923
 924 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 925 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 926                             4, 1);
 927 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 928                             4, 2);
 929
 930 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 931 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 932                             5, 1);
 933 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 934                             5, 2);
 935
 936 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 937 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 938                             6, 1);
 939 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 940                             6, 2);
 941
 942 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 943 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 944                             7, 1);
 945 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 946                             7, 2);
 947
 948 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 949 static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
 950 static SENSOR_DEVICE_ATTR_2(in10_input, S_IRUGO, show_in, NULL, 10, 0);
 951 static SENSOR_DEVICE_ATTR_2(in11_input, S_IRUGO, show_in, NULL, 11, 0);
 952 static SENSOR_DEVICE_ATTR_2(in12_input, S_IRUGO, show_in, NULL, 12, 0);
 953
 954 /* Up to 6 temperatures */
 955 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 956                          char *buf)
 957 {
 958         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 959         int nr = sattr->nr;
 960         int index = sattr->index;
 961         struct it87_data *data = it87_update_device(dev);
 962
 963         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 964 }
 965
 966 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 967                         const char *buf, size_t count)
 968 {
 969         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 970         int nr = sattr->nr;
 971         int index = sattr->index;
 972         struct it87_data *data = dev_get_drvdata(dev);
 973         long val;
 974         u8 reg, regval;
 975
 976         if (kstrtol(buf, 10, &val) < 0)
 977                 return -EINVAL;
 978
 979         mutex_lock(&data->update_lock);
 980
 981         switch (index) {
 982         default:
 983         case 1:
 984                 reg = IT87_REG_TEMP_LOW(nr);
 985                 break;
 986         case 2:
 987                 reg = IT87_REG_TEMP_HIGH(nr);
 988                 break;
 989         case 3:
 990                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 991                 if (!(regval & 0x80)) {
 992                         regval |= 0x80;
 993                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 994                 }
 995                 data->valid = false;
 996                 reg = IT87_REG_TEMP_OFFSET[nr];
 997                 break;
 998         }
 999
1000         data->temp[nr][index] = TEMP_TO_REG(val);
1001         it87_write_value(data, reg, data->temp[nr][index]);
1002         mutex_unlock(&data->update_lock);
1003         return count;
1004 }
1005
1006 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
1007 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1008                             0, 1);
1009 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1010                             0, 2);
1011 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
1012                             set_temp, 0, 3);
1013 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
1014 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1015                             1, 1);
1016 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1017                             1, 2);
1018 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
1019                             set_temp, 1, 3);
1020 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
1021 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
1022                             2, 1);
1023 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
1024                             2, 2);
1025 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
1026                             set_temp, 2, 3);
1027 static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, 0);
1028 static SENSOR_DEVICE_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, 0);
1029 static SENSOR_DEVICE_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, 0);
1030
1031 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
1032                               char *buf)
1033 {
1034         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1035         int nr = sensor_attr->index;
1036         struct it87_data *data = it87_update_device(dev);
1037         u8 reg = data->sensor;      /* In case value is updated while used */
1038         u8 extra = data->extra;
1039
1040         if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) ||
1041             (has_temp_old_peci(data, nr) && (extra & 0x80)))
1042                 return sprintf(buf, "6\n");  /* Intel PECI */
1043         if (reg & (1 << nr))
1044                 return sprintf(buf, "3\n");  /* thermal diode */
1045         if (reg & (8 << nr))
1046                 return sprintf(buf, "4\n");  /* thermistor */
1047         return sprintf(buf, "0\n");      /* disabled */
1048 }
1049
1050 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
1051                              const char *buf, size_t count)
1052 {
1053         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1054         int nr = sensor_attr->index;
1055
1056         struct it87_data *data = dev_get_drvdata(dev);
1057         long val;
1058         u8 reg, extra;
1059
1060         if (kstrtol(buf, 10, &val) < 0)
1061                 return -EINVAL;
1062
1063         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
1064         reg &= ~(1 << nr);
1065         reg &= ~(8 << nr);
1066         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
1067                 reg &= 0x3f;
1068         extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
1069         if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
1070                 extra &= 0x7f;
1071         if (val == 2) { /* backwards compatibility */
1072                 dev_warn(dev,
1073                          "Sensor type 2 is deprecated, please use 4 instead\n");
1074                 val = 4;
1075         }
1076         /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
1077         if (val == 3)
1078                 reg |= 1 << nr;
1079         else if (val == 4)
1080                 reg |= 8 << nr;
1081         else if (has_temp_peci(data, nr) && val == 6)
1082                 reg |= (nr + 1) << 6;
1083         else if (has_temp_old_peci(data, nr) && val == 6)
1084                 extra |= 0x80;
1085         else if (val != 0)
1086                 return -EINVAL;
1087
1088         mutex_lock(&data->update_lock);
1089         data->sensor = reg;
1090         data->extra = extra;
1091         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
1092         if (has_temp_old_peci(data, nr))
1093                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1094         data->valid = false;    /* Force cache refresh */
1095         mutex_unlock(&data->update_lock);
1096         return count;
1097 }
1098
1099 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
1100                           set_temp_type, 0);
1101 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
1102                           set_temp_type, 1);
1103 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
1104                           set_temp_type, 2);
1105
1106 /* 6 Fans */
1107
1108 static int pwm_mode(const struct it87_data *data, int nr)
1109 {
1110         if (data->type != it8603 && nr < 3 && !(data->fan_main_ctrl & BIT(nr)))
1111                 return 0;                               /* Full speed */
1112         if (data->pwm_ctrl[nr] & 0x80)
1113                 return 2;                               /* Automatic mode */
1114         if ((data->type == it8603 || nr >= 3) &&
1115             data->pwm_duty[nr] == pwm_to_reg(data, 0xff))
1116                 return 0;                       /* Full speed */
1117
1118         return 1;                               /* Manual mode */
1119 }
1120
1121 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1122                         char *buf)
1123 {
1124         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1125         int nr = sattr->nr;
1126         int index = sattr->index;
1127         int speed;
1128         struct it87_data *data = it87_update_device(dev);
1129
1130         speed = has_16bit_fans(data) ?
1131                 FAN16_FROM_REG(data->fan[nr][index]) :
1132                 FAN_FROM_REG(data->fan[nr][index],
1133                              DIV_FROM_REG(data->fan_div[nr]));
1134         return sprintf(buf, "%d\n", speed);
1135 }
1136
1137 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
1138                             char *buf)
1139 {
1140         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1141         struct it87_data *data = it87_update_device(dev);
1142         int nr = sensor_attr->index;
1143
1144         return sprintf(buf, "%lu\n", DIV_FROM_REG(data->fan_div[nr]));
1145 }
1146
1147 static ssize_t show_pwm_enable(struct device *dev,
1148                                struct device_attribute *attr, char *buf)
1149 {
1150         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1151         struct it87_data *data = it87_update_device(dev);
1152         int nr = sensor_attr->index;
1153
1154         return sprintf(buf, "%d\n", pwm_mode(data, nr));
1155 }
1156
1157 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1158                         char *buf)
1159 {
1160         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1161         struct it87_data *data = it87_update_device(dev);
1162         int nr = sensor_attr->index;
1163
1164         return sprintf(buf, "%d\n",
1165                        pwm_from_reg(data, data->pwm_duty[nr]));
1166 }
1167
1168 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
1169                              char *buf)
1170 {
1171         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1172         struct it87_data *data = it87_update_device(dev);
1173         int nr = sensor_attr->index;
1174         unsigned int freq;
1175         int index;
1176
1177         if (has_pwm_freq2(data) && nr == 1)
1178                 index = (data->extra >> 4) & 0x07;
1179         else
1180                 index = (data->fan_ctl >> 4) & 0x07;
1181
1182         freq = pwm_freq[index] / (has_newer_autopwm(data) ? 256 : 128);
1183
1184         return sprintf(buf, "%u\n", freq);
1185 }
1186
1187 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1188                        const char *buf, size_t count)
1189 {
1190         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
1191         int nr = sattr->nr;
1192         int index = sattr->index;
1193
1194         struct it87_data *data = dev_get_drvdata(dev);
1195         long val;
1196         u8 reg;
1197
1198         if (kstrtol(buf, 10, &val) < 0)
1199                 return -EINVAL;
1200
1201         mutex_lock(&data->update_lock);
1202
1203         if (has_16bit_fans(data)) {
1204                 data->fan[nr][index] = FAN16_TO_REG(val);
1205                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
1206                                  data->fan[nr][index] & 0xff);
1207                 it87_write_value(data, IT87_REG_FANX_MIN[nr],
1208                                  data->fan[nr][index] >> 8);
1209         } else {
1210                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
1211                 switch (nr) {
1212                 case 0:
1213                         data->fan_div[nr] = reg & 0x07;
1214                         break;
1215                 case 1:
1216                         data->fan_div[nr] = (reg >> 3) & 0x07;
1217                         break;
1218                 case 2:
1219                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
1220                         break;
1221                 }
1222                 data->fan[nr][index] =
1223                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
1224                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
1225                                  data->fan[nr][index]);
1226         }
1227
1228         mutex_unlock(&data->update_lock);
1229         return count;
1230 }
1231
1232 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
1233                            const char *buf, size_t count)
1234 {
1235         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1236         struct it87_data *data = dev_get_drvdata(dev);
1237         int nr = sensor_attr->index;
1238         unsigned long val;
1239         int min;
1240         u8 old;
1241
1242         if (kstrtoul(buf, 10, &val) < 0)
1243                 return -EINVAL;
1244
1245         mutex_lock(&data->update_lock);
1246         old = it87_read_value(data, IT87_REG_FAN_DIV);
1247
1248         /* Save fan min limit */
1249         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
1250
1251         switch (nr) {
1252         case 0:
1253         case 1:
1254                 data->fan_div[nr] = DIV_TO_REG(val);
1255                 break;
1256         case 2:
1257                 if (val < 8)
1258                         data->fan_div[nr] = 1;
1259                 else
1260                         data->fan_div[nr] = 3;
1261         }
1262         val = old & 0x80;
1263         val |= (data->fan_div[0] & 0x07);
1264         val |= (data->fan_div[1] & 0x07) << 3;
1265         if (data->fan_div[2] == 3)
1266                 val |= 0x1 << 6;
1267         it87_write_value(data, IT87_REG_FAN_DIV, val);
1268
1269         /* Restore fan min limit */
1270         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
1271         it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
1272
1273         mutex_unlock(&data->update_lock);
1274         return count;
1275 }
1276
1277 /* Returns 0 if OK, -EINVAL otherwise */
1278 static int check_trip_points(struct device *dev, int nr)
1279 {
1280         const struct it87_data *data = dev_get_drvdata(dev);
1281         int i, err = 0;
1282
1283         if (has_old_autopwm(data)) {
1284                 for (i = 0; i < 3; i++) {
1285                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1286                                 err = -EINVAL;
1287                 }
1288                 for (i = 0; i < 2; i++) {
1289                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
1290                                 err = -EINVAL;
1291                 }
1292         } else if (has_newer_autopwm(data)) {
1293                 for (i = 1; i < 3; i++) {
1294                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
1295                                 err = -EINVAL;
1296                 }
1297         }
1298
1299         if (err) {
1300                 dev_err(dev,
1301                         "Inconsistent trip points, not switching to automatic mode\n");
1302                 dev_err(dev, "Adjust the trip points and try again\n");
1303         }
1304         return err;
1305 }
1306
1307 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
1308                               const char *buf, size_t count)
1309 {
1310         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1311         struct it87_data *data = dev_get_drvdata(dev);
1312         int nr = sensor_attr->index;
1313         long val;
1314
1315         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
1316                 return -EINVAL;
1317
1318         /* Check trip points before switching to automatic mode */
1319         if (val == 2) {
1320                 if (check_trip_points(dev, nr) < 0)
1321                         return -EINVAL;
1322         }
1323
1324         mutex_lock(&data->update_lock);
1325
1326         if (val == 0) {
1327                 if (nr < 3 && data->type != it8603) {
1328                         int tmp;
1329                         /* make sure the fan is on when in on/off mode */
1330                         tmp = it87_read_value(data, IT87_REG_FAN_CTL);
1331                         it87_write_value(data, IT87_REG_FAN_CTL, tmp | BIT(nr));
1332                         /* set on/off mode */
1333                         data->fan_main_ctrl &= ~BIT(nr);
1334                         it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1335                                          data->fan_main_ctrl);
1336                 } else {
1337                         u8 ctrl;
1338
1339                         /* No on/off mode, set maximum pwm value */
1340                         data->pwm_duty[nr] = pwm_to_reg(data, 0xff);
1341                         it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1342                                          data->pwm_duty[nr]);
1343                         /* and set manual mode */
1344                         if (has_newer_autopwm(data)) {
1345                                 ctrl = (data->pwm_ctrl[nr] & 0x7c) |
1346                                         data->pwm_temp_map[nr];
1347                         } else {
1348                                 ctrl = data->pwm_duty[nr];
1349                         }
1350                         data->pwm_ctrl[nr] = ctrl;
1351                         it87_write_value(data, IT87_REG_PWM[nr], ctrl);
1352                 }
1353         } else {
1354                 u8 ctrl;
1355
1356                 if (has_newer_autopwm(data)) {
1357                         ctrl = (data->pwm_ctrl[nr] & 0x7c) |
1358                                 data->pwm_temp_map[nr];
1359                         if (val != 1)
1360                                 ctrl |= 0x80;
1361                 } else {
1362                         ctrl = (val == 1 ? data->pwm_duty[nr] : 0x80);
1363                 }
1364                 data->pwm_ctrl[nr] = ctrl;
1365                 it87_write_value(data, IT87_REG_PWM[nr], ctrl);
1366
1367                 if (data->type != it8603 && nr < 3) {
1368                         /* set SmartGuardian mode */
1369                         data->fan_main_ctrl |= BIT(nr);
1370                         it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
1371                                          data->fan_main_ctrl);
1372                 }
1373         }
1374
1375         mutex_unlock(&data->update_lock);
1376         return count;
1377 }
1378
1379 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1380                        const char *buf, size_t count)
1381 {
1382         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1383         struct it87_data *data = dev_get_drvdata(dev);
1384         int nr = sensor_attr->index;
1385         long val;
1386
1387         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1388                 return -EINVAL;
1389
1390         mutex_lock(&data->update_lock);
1391         it87_update_pwm_ctrl(data, nr);
1392         if (has_newer_autopwm(data)) {
1393                 /*
1394                  * If we are in automatic mode, the PWM duty cycle register
1395                  * is read-only so we can't write the value.
1396                  */
1397                 if (data->pwm_ctrl[nr] & 0x80) {
1398                         mutex_unlock(&data->update_lock);
1399                         return -EBUSY;
1400                 }
1401                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1402                 it87_write_value(data, IT87_REG_PWM_DUTY[nr],
1403                                  data->pwm_duty[nr]);
1404         } else {
1405                 data->pwm_duty[nr] = pwm_to_reg(data, val);
1406                 /*
1407                  * If we are in manual mode, write the duty cycle immediately;
1408                  * otherwise, just store it for later use.
1409                  */
1410                 if (!(data->pwm_ctrl[nr] & 0x80)) {
1411                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
1412                         it87_write_value(data, IT87_REG_PWM[nr],
1413                                          data->pwm_ctrl[nr]);
1414                 }
1415         }
1416         mutex_unlock(&data->update_lock);
1417         return count;
1418 }
1419
1420 static ssize_t set_pwm_freq(struct device *dev, struct device_attribute *attr,
1421                             const char *buf, size_t count)
1422 {
1423         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1424         struct it87_data *data = dev_get_drvdata(dev);
1425         int nr = sensor_attr->index;
1426         unsigned long val;
1427         int i;
1428
1429         if (kstrtoul(buf, 10, &val) < 0)
1430                 return -EINVAL;
1431
1432         val = clamp_val(val, 0, 1000000);
1433         val *= has_newer_autopwm(data) ? 256 : 128;
1434
1435         /* Search for the nearest available frequency */
1436         for (i = 0; i < 7; i++) {
1437                 if (val > (pwm_freq[i] + pwm_freq[i + 1]) / 2)
1438                         break;
1439         }
1440
1441         mutex_lock(&data->update_lock);
1442         if (nr == 0) {
1443                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
1444                 data->fan_ctl |= i << 4;
1445                 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
1446         } else {
1447                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x8f;
1448                 data->extra |= i << 4;
1449                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
1450         }
1451         mutex_unlock(&data->update_lock);
1452
1453         return count;
1454 }
1455
1456 static ssize_t show_pwm_temp_map(struct device *dev,
1457                                  struct device_attribute *attr, char *buf)
1458 {
1459         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1460         struct it87_data *data = it87_update_device(dev);
1461         int nr = sensor_attr->index;
1462         int map;
1463
1464         map = data->pwm_temp_map[nr];
1465         if (map >= 3)
1466                 map = 0;        /* Should never happen */
1467         if (nr >= 3)            /* pwm channels 3..6 map to temp4..6 */
1468                 map += 3;
1469
1470         return sprintf(buf, "%d\n", (int)BIT(map));
1471 }
1472
1473 static ssize_t set_pwm_temp_map(struct device *dev,
1474                                 struct device_attribute *attr, const char *buf,
1475                                 size_t count)
1476 {
1477         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1478         struct it87_data *data = dev_get_drvdata(dev);
1479         int nr = sensor_attr->index;
1480         long val;
1481         u8 reg;
1482
1483         if (kstrtol(buf, 10, &val) < 0)
1484                 return -EINVAL;
1485
1486         if (nr >= 3)
1487                 val -= 3;
1488
1489         switch (val) {
1490         case BIT(0):
1491                 reg = 0x00;
1492                 break;
1493         case BIT(1):
1494                 reg = 0x01;
1495                 break;
1496         case BIT(2):
1497                 reg = 0x02;
1498                 break;
1499         default:
1500                 return -EINVAL;
1501         }
1502
1503         mutex_lock(&data->update_lock);
1504         it87_update_pwm_ctrl(data, nr);
1505         data->pwm_temp_map[nr] = reg;
1506         /*
1507          * If we are in automatic mode, write the temp mapping immediately;
1508          * otherwise, just store it for later use.
1509          */
1510         if (data->pwm_ctrl[nr] & 0x80) {
1511                 data->pwm_ctrl[nr] = (data->pwm_ctrl[nr] & 0xfc) |
1512                                                 data->pwm_temp_map[nr];
1513                 it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]);
1514         }
1515         mutex_unlock(&data->update_lock);
1516         return count;
1517 }
1518
1519 static ssize_t show_auto_pwm(struct device *dev, struct device_attribute *attr,
1520                              char *buf)
1521 {
1522         struct it87_data *data = it87_update_device(dev);
1523         struct sensor_device_attribute_2 *sensor_attr =
1524                         to_sensor_dev_attr_2(attr);
1525         int nr = sensor_attr->nr;
1526         int point = sensor_attr->index;
1527
1528         return sprintf(buf, "%d\n",
1529                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1530 }
1531
1532 static ssize_t set_auto_pwm(struct device *dev, struct device_attribute *attr,
1533                             const char *buf, size_t count)
1534 {
1535         struct it87_data *data = dev_get_drvdata(dev);
1536         struct sensor_device_attribute_2 *sensor_attr =
1537                         to_sensor_dev_attr_2(attr);
1538         int nr = sensor_attr->nr;
1539         int point = sensor_attr->index;
1540         int regaddr;
1541         long val;
1542
1543         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1544                 return -EINVAL;
1545
1546         mutex_lock(&data->update_lock);
1547         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1548         if (has_newer_autopwm(data))
1549                 regaddr = IT87_REG_AUTO_TEMP(nr, 3);
1550         else
1551                 regaddr = IT87_REG_AUTO_PWM(nr, point);
1552         it87_write_value(data, regaddr, data->auto_pwm[nr][point]);
1553         mutex_unlock(&data->update_lock);
1554         return count;
1555 }
1556
1557 static ssize_t show_auto_pwm_slope(struct device *dev,
1558                                    struct device_attribute *attr, char *buf)
1559 {
1560         struct it87_data *data = it87_update_device(dev);
1561         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1562         int nr = sensor_attr->index;
1563
1564         return sprintf(buf, "%d\n", data->auto_pwm[nr][1] & 0x7f);
1565 }
1566
1567 static ssize_t set_auto_pwm_slope(struct device *dev,
1568                                   struct device_attribute *attr,
1569                                   const char *buf, size_t count)
1570 {
1571         struct it87_data *data = dev_get_drvdata(dev);
1572         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1573         int nr = sensor_attr->index;
1574         unsigned long val;
1575
1576         if (kstrtoul(buf, 10, &val) < 0 || val > 127)
1577                 return -EINVAL;
1578
1579         mutex_lock(&data->update_lock);
1580         data->auto_pwm[nr][1] = (data->auto_pwm[nr][1] & 0x80) | val;
1581         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 4),
1582                          data->auto_pwm[nr][1]);
1583         mutex_unlock(&data->update_lock);
1584         return count;
1585 }
1586
1587 static ssize_t show_auto_temp(struct device *dev, struct device_attribute *attr,
1588                               char *buf)
1589 {
1590         struct it87_data *data = it87_update_device(dev);
1591         struct sensor_device_attribute_2 *sensor_attr =
1592                         to_sensor_dev_attr_2(attr);
1593         int nr = sensor_attr->nr;
1594         int point = sensor_attr->index;
1595         int reg;
1596
1597         if (has_old_autopwm(data) || point)
1598                 reg = data->auto_temp[nr][point];
1599         else
1600                 reg = data->auto_temp[nr][1] - (data->auto_temp[nr][0] & 0x1f);
1601
1602         return sprintf(buf, "%d\n", TEMP_FROM_REG(reg));
1603 }
1604
1605 static ssize_t set_auto_temp(struct device *dev, struct device_attribute *attr,
1606                              const char *buf, size_t count)
1607 {
1608         struct it87_data *data = dev_get_drvdata(dev);
1609         struct sensor_device_attribute_2 *sensor_attr =
1610                         to_sensor_dev_attr_2(attr);
1611         int nr = sensor_attr->nr;
1612         int point = sensor_attr->index;
1613         long val;
1614         int reg;
1615
1616         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1617                 return -EINVAL;
1618
1619         mutex_lock(&data->update_lock);
1620         if (has_newer_autopwm(data) && !point) {
1621                 reg = data->auto_temp[nr][1] - TEMP_TO_REG(val);
1622                 reg = clamp_val(reg, 0, 0x1f) | (data->auto_temp[nr][0] & 0xe0);
1623                 data->auto_temp[nr][0] = reg;
1624                 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 5), reg);
1625         } else {
1626                 reg = TEMP_TO_REG(val);
1627                 data->auto_temp[nr][point] = reg;
1628                 if (has_newer_autopwm(data))
1629                         point--;
1630                 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), reg);
1631         }
1632         mutex_unlock(&data->update_lock);
1633         return count;
1634 }
1635
1636 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1637 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1638                             0, 1);
1639 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1640                           set_fan_div, 0);
1641
1642 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1643 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1644                             1, 1);
1645 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1646                           set_fan_div, 1);
1647
1648 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1649 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1650                             2, 1);
1651 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1652                           set_fan_div, 2);
1653
1654 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1655 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1656                             3, 1);
1657
1658 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1659 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1660                             4, 1);
1661
1662 static SENSOR_DEVICE_ATTR_2(fan6_input, S_IRUGO, show_fan, NULL, 5, 0);
1663 static SENSOR_DEVICE_ATTR_2(fan6_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1664                             5, 1);
1665
1666 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1667                           show_pwm_enable, set_pwm_enable, 0);
1668 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1669 static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq,
1670                           set_pwm_freq, 0);
1671 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO,
1672                           show_pwm_temp_map, set_pwm_temp_map, 0);
1673 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1674                             show_auto_pwm, set_auto_pwm, 0, 0);
1675 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1676                             show_auto_pwm, set_auto_pwm, 0, 1);
1677 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1678                             show_auto_pwm, set_auto_pwm, 0, 2);
1679 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1680                             show_auto_pwm, NULL, 0, 3);
1681 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1682                             show_auto_temp, set_auto_temp, 0, 1);
1683 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1684                             show_auto_temp, set_auto_temp, 0, 0);
1685 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1686                             show_auto_temp, set_auto_temp, 0, 2);
1687 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1688                             show_auto_temp, set_auto_temp, 0, 3);
1689 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1690                             show_auto_temp, set_auto_temp, 0, 4);
1691 static SENSOR_DEVICE_ATTR_2(pwm1_auto_start, S_IRUGO | S_IWUSR,
1692                             show_auto_pwm, set_auto_pwm, 0, 0);
1693 static SENSOR_DEVICE_ATTR(pwm1_auto_slope, S_IRUGO | S_IWUSR,
1694                           show_auto_pwm_slope, set_auto_pwm_slope, 0);
1695
1696 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1697                           show_pwm_enable, set_pwm_enable, 1);
1698 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1699 static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, set_pwm_freq, 1);
1700 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO,
1701                           show_pwm_temp_map, set_pwm_temp_map, 1);
1702 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1703                             show_auto_pwm, set_auto_pwm, 1, 0);
1704 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1705                             show_auto_pwm, set_auto_pwm, 1, 1);
1706 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1707                             show_auto_pwm, set_auto_pwm, 1, 2);
1708 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1709                             show_auto_pwm, NULL, 1, 3);
1710 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1711                             show_auto_temp, set_auto_temp, 1, 1);
1712 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1713                             show_auto_temp, set_auto_temp, 1, 0);
1714 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1715                             show_auto_temp, set_auto_temp, 1, 2);
1716 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1717                             show_auto_temp, set_auto_temp, 1, 3);
1718 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1719                             show_auto_temp, set_auto_temp, 1, 4);
1720 static SENSOR_DEVICE_ATTR_2(pwm2_auto_start, S_IRUGO | S_IWUSR,
1721                             show_auto_pwm, set_auto_pwm, 1, 0);
1722 static SENSOR_DEVICE_ATTR(pwm2_auto_slope, S_IRUGO | S_IWUSR,
1723                           show_auto_pwm_slope, set_auto_pwm_slope, 1);
1724
1725 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1726                           show_pwm_enable, set_pwm_enable, 2);
1727 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1728 static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL, 2);
1729 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO,
1730                           show_pwm_temp_map, set_pwm_temp_map, 2);
1731 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1732                             show_auto_pwm, set_auto_pwm, 2, 0);
1733 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1734                             show_auto_pwm, set_auto_pwm, 2, 1);
1735 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1736                             show_auto_pwm, set_auto_pwm, 2, 2);
1737 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1738                             show_auto_pwm, NULL, 2, 3);
1739 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1740                             show_auto_temp, set_auto_temp, 2, 1);
1741 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1742                             show_auto_temp, set_auto_temp, 2, 0);
1743 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1744                             show_auto_temp, set_auto_temp, 2, 2);
1745 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1746                             show_auto_temp, set_auto_temp, 2, 3);
1747 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1748                             show_auto_temp, set_auto_temp, 2, 4);
1749 static SENSOR_DEVICE_ATTR_2(pwm3_auto_start, S_IRUGO | S_IWUSR,
1750                             show_auto_pwm, set_auto_pwm, 2, 0);
1751 static SENSOR_DEVICE_ATTR(pwm3_auto_slope, S_IRUGO | S_IWUSR,
1752                           show_auto_pwm_slope, set_auto_pwm_slope, 2);
1753
1754 static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
1755                           show_pwm_enable, set_pwm_enable, 3);
1756 static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 3);
1757 static SENSOR_DEVICE_ATTR(pwm4_freq, S_IRUGO, show_pwm_freq, NULL, 3);
1758 static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO,
1759                           show_pwm_temp_map, set_pwm_temp_map, 3);
1760 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp, S_IRUGO | S_IWUSR,
1761                             show_auto_temp, set_auto_temp, 2, 1);
1762 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1763                             show_auto_temp, set_auto_temp, 2, 0);
1764 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point2_temp, S_IRUGO | S_IWUSR,
1765                             show_auto_temp, set_auto_temp, 2, 2);
1766 static SENSOR_DEVICE_ATTR_2(pwm4_auto_point3_temp, S_IRUGO | S_IWUSR,
1767                             show_auto_temp, set_auto_temp, 2, 3);
1768 static SENSOR_DEVICE_ATTR_2(pwm4_auto_start, S_IRUGO | S_IWUSR,
1769                             show_auto_pwm, set_auto_pwm, 3, 0);
1770 static SENSOR_DEVICE_ATTR(pwm4_auto_slope, S_IRUGO | S_IWUSR,
1771                           show_auto_pwm_slope, set_auto_pwm_slope, 3);
1772
1773 static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
1774                           show_pwm_enable, set_pwm_enable, 4);
1775 static SENSOR_DEVICE_ATTR(pwm5, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 4);
1776 static SENSOR_DEVICE_ATTR(pwm5_freq, S_IRUGO, show_pwm_freq, NULL, 4);
1777 static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO,
1778                           show_pwm_temp_map, set_pwm_temp_map, 4);
1779 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp, S_IRUGO | S_IWUSR,
1780                             show_auto_temp, set_auto_temp, 2, 1);
1781 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1782                             show_auto_temp, set_auto_temp, 2, 0);
1783 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point2_temp, S_IRUGO | S_IWUSR,
1784                             show_auto_temp, set_auto_temp, 2, 2);
1785 static SENSOR_DEVICE_ATTR_2(pwm5_auto_point3_temp, S_IRUGO | S_IWUSR,
1786                             show_auto_temp, set_auto_temp, 2, 3);
1787 static SENSOR_DEVICE_ATTR_2(pwm5_auto_start, S_IRUGO | S_IWUSR,
1788                             show_auto_pwm, set_auto_pwm, 4, 0);
1789 static SENSOR_DEVICE_ATTR(pwm5_auto_slope, S_IRUGO | S_IWUSR,
1790                           show_auto_pwm_slope, set_auto_pwm_slope, 4);
1791
1792 static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
1793                           show_pwm_enable, set_pwm_enable, 5);
1794 static SENSOR_DEVICE_ATTR(pwm6, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 5);
1795 static SENSOR_DEVICE_ATTR(pwm6_freq, S_IRUGO, show_pwm_freq, NULL, 5);
1796 static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO,
1797                           show_pwm_temp_map, set_pwm_temp_map, 5);
1798 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp, S_IRUGO | S_IWUSR,
1799                             show_auto_temp, set_auto_temp, 2, 1);
1800 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1801                             show_auto_temp, set_auto_temp, 2, 0);
1802 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point2_temp, S_IRUGO | S_IWUSR,
1803                             show_auto_temp, set_auto_temp, 2, 2);
1804 static SENSOR_DEVICE_ATTR_2(pwm6_auto_point3_temp, S_IRUGO | S_IWUSR,
1805                             show_auto_temp, set_auto_temp, 2, 3);
1806 static SENSOR_DEVICE_ATTR_2(pwm6_auto_start, S_IRUGO | S_IWUSR,
1807                             show_auto_pwm, set_auto_pwm, 5, 0);
1808 static SENSOR_DEVICE_ATTR(pwm6_auto_slope, S_IRUGO | S_IWUSR,
1809                           show_auto_pwm_slope, set_auto_pwm_slope, 5);
1810
1811 /* Alarms */
1812 static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
1813                            char *buf)
1814 {
1815         struct it87_data *data = it87_update_device(dev);
1816
1817         return sprintf(buf, "%u\n", data->alarms);
1818 }
1819 static DEVICE_ATTR_RO(alarms);
1820
1821 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1822                           char *buf)
1823 {
1824         struct it87_data *data = it87_update_device(dev);
1825         int bitnr = to_sensor_dev_attr(attr)->index;
1826
1827         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1828 }
1829
1830 static ssize_t clear_intrusion(struct device *dev,
1831                                struct device_attribute *attr, const char *buf,
1832                                size_t count)
1833 {
1834         struct it87_data *data = dev_get_drvdata(dev);
1835         int config;
1836         long val;
1837
1838         if (kstrtol(buf, 10, &val) < 0 || val != 0)
1839                 return -EINVAL;
1840
1841         mutex_lock(&data->update_lock);
1842         config = it87_read_value(data, IT87_REG_CONFIG);
1843         if (config < 0) {
1844                 count = config;
1845         } else {
1846                 config |= BIT(5);
1847                 it87_write_value(data, IT87_REG_CONFIG, config);
1848                 /* Invalidate cache to force re-read */
1849                 data->valid = false;
1850         }
1851         mutex_unlock(&data->update_lock);
1852
1853         return count;
1854 }
1855
1856 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1857 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1858 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1859 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1860 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1861 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1862 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1863 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1864 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1865 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1866 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1867 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1868 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1869 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 7);
1870 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1871 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1872 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1873 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1874                           show_alarm, clear_intrusion, 4);
1875
1876 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1877                          char *buf)
1878 {
1879         struct it87_data *data = it87_update_device(dev);
1880         int bitnr = to_sensor_dev_attr(attr)->index;
1881
1882         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1883 }
1884
1885 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1886                         const char *buf, size_t count)
1887 {
1888         int bitnr = to_sensor_dev_attr(attr)->index;
1889         struct it87_data *data = dev_get_drvdata(dev);
1890         long val;
1891
1892         if (kstrtol(buf, 10, &val) < 0 || (val != 0 && val != 1))
1893                 return -EINVAL;
1894
1895         mutex_lock(&data->update_lock);
1896         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1897         if (val)
1898                 data->beeps |= BIT(bitnr);
1899         else
1900                 data->beeps &= ~BIT(bitnr);
1901         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1902         mutex_unlock(&data->update_lock);
1903         return count;
1904 }
1905
1906 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1907                           show_beep, set_beep, 1);
1908 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1909 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1910 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1911 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1912 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1913 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1914 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1915 /* fanX_beep writability is set later */
1916 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1917 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1918 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1919 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1920 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1921 static SENSOR_DEVICE_ATTR(fan6_beep, S_IRUGO, show_beep, set_beep, 0);
1922 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1923                           show_beep, set_beep, 2);
1924 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1925 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1926
1927 static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1928                         char *buf)
1929 {
1930         struct it87_data *data = dev_get_drvdata(dev);
1931
1932         return sprintf(buf, "%u\n", data->vrm);
1933 }
1934
1935 static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1936                          const char *buf, size_t count)
1937 {
1938         struct it87_data *data = dev_get_drvdata(dev);
1939         unsigned long val;
1940
1941         if (kstrtoul(buf, 10, &val) < 0)
1942                 return -EINVAL;
1943
1944         data->vrm = val;
1945
1946         return count;
1947 }
1948 static DEVICE_ATTR_RW(vrm);
1949
1950 static ssize_t cpu0_vid_show(struct device *dev,
1951                              struct device_attribute *attr, char *buf)
1952 {
1953         struct it87_data *data = it87_update_device(dev);
1954
1955         return sprintf(buf, "%ld\n", (long)vid_from_reg(data->vid, data->vrm));
1956 }
1957 static DEVICE_ATTR_RO(cpu0_vid);
1958
1959 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1960                           char *buf)
1961 {
1962         static const char * const labels[] = {
1963                 "+5V",
1964                 "5VSB",
1965                 "Vbat",
1966                 "AVCC",
1967         };
1968         static const char * const labels_it8721[] = {
1969                 "+3.3V",
1970                 "3VSB",
1971                 "Vbat",
1972                 "+3.3V",
1973         };
1974         struct it87_data *data = dev_get_drvdata(dev);
1975         int nr = to_sensor_dev_attr(attr)->index;
1976         const char *label;
1977
1978         if (has_vin3_5v(data) && nr == 0)
1979                 label = labels[0];
1980         else if (has_12mv_adc(data) || has_10_9mv_adc(data))
1981                 label = labels_it8721[nr];
1982         else
1983                 label = labels[nr];
1984
1985         return sprintf(buf, "%s\n", label);
1986 }
1987 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1988 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1989 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1990 /* AVCC3 */
1991 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 3);
1992
1993 static umode_t it87_in_is_visible(struct kobject *kobj,
1994                                   struct attribute *attr, int index)
1995 {
1996         struct device *dev = kobj_to_dev(kobj);
1997         struct it87_data *data = dev_get_drvdata(dev);
1998         int i = index / 5;      /* voltage index */
1999         int a = index % 5;      /* attribute index */
2000
2001         if (index >= 40) {      /* in8 and higher only have input attributes */
2002                 i = index - 40 + 8;
2003                 a = 0;
2004         }
2005
2006         if (!(data->has_in & BIT(i)))
2007                 return 0;
2008
2009         if (a == 4 && !data->has_beep)
2010                 return 0;
2011
2012         return attr->mode;
2013 }
2014
2015 static struct attribute *it87_attributes_in[] = {
2016         &sensor_dev_attr_in0_input.dev_attr.attr,
2017         &sensor_dev_attr_in0_min.dev_attr.attr,
2018         &sensor_dev_attr_in0_max.dev_attr.attr,
2019         &sensor_dev_attr_in0_alarm.dev_attr.attr,
2020         &sensor_dev_attr_in0_beep.dev_attr.attr,        /* 4 */
2021
2022         &sensor_dev_attr_in1_input.dev_attr.attr,
2023         &sensor_dev_attr_in1_min.dev_attr.attr,
2024         &sensor_dev_attr_in1_max.dev_attr.attr,
2025         &sensor_dev_attr_in1_alarm.dev_attr.attr,
2026         &sensor_dev_attr_in1_beep.dev_attr.attr,        /* 9 */
2027
2028         &sensor_dev_attr_in2_input.dev_attr.attr,
2029         &sensor_dev_attr_in2_min.dev_attr.attr,
2030         &sensor_dev_attr_in2_max.dev_attr.attr,
2031         &sensor_dev_attr_in2_alarm.dev_attr.attr,
2032         &sensor_dev_attr_in2_beep.dev_attr.attr,        /* 14 */
2033
2034         &sensor_dev_attr_in3_input.dev_attr.attr,
2035         &sensor_dev_attr_in3_min.dev_attr.attr,
2036         &sensor_dev_attr_in3_max.dev_attr.attr,
2037         &sensor_dev_attr_in3_alarm.dev_attr.attr,
2038         &sensor_dev_attr_in3_beep.dev_attr.attr,        /* 19 */
2039
2040         &sensor_dev_attr_in4_input.dev_attr.attr,
2041         &sensor_dev_attr_in4_min.dev_attr.attr,
2042         &sensor_dev_attr_in4_max.dev_attr.attr,
2043         &sensor_dev_attr_in4_alarm.dev_attr.attr,
2044         &sensor_dev_attr_in4_beep.dev_attr.attr,        /* 24 */
2045
2046         &sensor_dev_attr_in5_input.dev_attr.attr,
2047         &sensor_dev_attr_in5_min.dev_attr.attr,
2048         &sensor_dev_attr_in5_max.dev_attr.attr,
2049         &sensor_dev_attr_in5_alarm.dev_attr.attr,
2050         &sensor_dev_attr_in5_beep.dev_attr.attr,        /* 29 */
2051
2052         &sensor_dev_attr_in6_input.dev_attr.attr,
2053         &sensor_dev_attr_in6_min.dev_attr.attr,
2054         &sensor_dev_attr_in6_max.dev_attr.attr,
2055         &sensor_dev_attr_in6_alarm.dev_attr.attr,
2056         &sensor_dev_attr_in6_beep.dev_attr.attr,        /* 34 */
2057
2058         &sensor_dev_attr_in7_input.dev_attr.attr,
2059         &sensor_dev_attr_in7_min.dev_attr.attr,
2060         &sensor_dev_attr_in7_max.dev_attr.attr,
2061         &sensor_dev_attr_in7_alarm.dev_attr.attr,
2062         &sensor_dev_attr_in7_beep.dev_attr.attr,        /* 39 */
2063
2064         &sensor_dev_attr_in8_input.dev_attr.attr,       /* 40 */
2065         &sensor_dev_attr_in9_input.dev_attr.attr,
2066         &sensor_dev_attr_in10_input.dev_attr.attr,
2067         &sensor_dev_attr_in11_input.dev_attr.attr,
2068         &sensor_dev_attr_in12_input.dev_attr.attr,
2069         NULL
2070 };
2071
2072 static const struct attribute_group it87_group_in = {
2073         .attrs = it87_attributes_in,
2074         .is_visible = it87_in_is_visible,
2075 };
2076
2077 static umode_t it87_temp_is_visible(struct kobject *kobj,
2078                                     struct attribute *attr, int index)
2079 {
2080         struct device *dev = kobj_to_dev(kobj);
2081         struct it87_data *data = dev_get_drvdata(dev);
2082         int i = index / 7;      /* temperature index */
2083         int a = index % 7;      /* attribute index */
2084
2085         if (index >= 21) {
2086                 i = index - 21 + 3;
2087                 a = 0;
2088         }
2089
2090         if (!(data->has_temp & BIT(i)))
2091                 return 0;
2092
2093         if (a == 5 && !has_temp_offset(data))
2094                 return 0;
2095
2096         if (a == 6 && !data->has_beep)
2097                 return 0;
2098
2099         return attr->mode;
2100 }
2101
2102 static struct attribute *it87_attributes_temp[] = {
2103         &sensor_dev_attr_temp1_input.dev_attr.attr,
2104         &sensor_dev_attr_temp1_max.dev_attr.attr,
2105         &sensor_dev_attr_temp1_min.dev_attr.attr,
2106         &sensor_dev_attr_temp1_type.dev_attr.attr,
2107         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
2108         &sensor_dev_attr_temp1_offset.dev_attr.attr,    /* 5 */
2109         &sensor_dev_attr_temp1_beep.dev_attr.attr,      /* 6 */
2110
2111         &sensor_dev_attr_temp2_input.dev_attr.attr,     /* 7 */
2112         &sensor_dev_attr_temp2_max.dev_attr.attr,
2113         &sensor_dev_attr_temp2_min.dev_attr.attr,
2114         &sensor_dev_attr_temp2_type.dev_attr.attr,
2115         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
2116         &sensor_dev_attr_temp2_offset.dev_attr.attr,
2117         &sensor_dev_attr_temp2_beep.dev_attr.attr,
2118
2119         &sensor_dev_attr_temp3_input.dev_attr.attr,     /* 14 */
2120         &sensor_dev_attr_temp3_max.dev_attr.attr,
2121         &sensor_dev_attr_temp3_min.dev_attr.attr,
2122         &sensor_dev_attr_temp3_type.dev_attr.attr,
2123         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
2124         &sensor_dev_attr_temp3_offset.dev_attr.attr,
2125         &sensor_dev_attr_temp3_beep.dev_attr.attr,
2126
2127         &sensor_dev_attr_temp4_input.dev_attr.attr,     /* 21 */
2128         &sensor_dev_attr_temp5_input.dev_attr.attr,
2129         &sensor_dev_attr_temp6_input.dev_attr.attr,
2130         NULL
2131 };
2132
2133 static const struct attribute_group it87_group_temp = {
2134         .attrs = it87_attributes_temp,
2135         .is_visible = it87_temp_is_visible,
2136 };
2137
2138 static umode_t it87_is_visible(struct kobject *kobj,
2139                                struct attribute *attr, int index)
2140 {
2141         struct device *dev = kobj_to_dev(kobj);
2142         struct it87_data *data = dev_get_drvdata(dev);
2143
2144         if ((index == 2 || index == 3) && !data->has_vid)
2145                 return 0;
2146
2147         if (index > 3 && !(data->in_internal & BIT(index - 4)))
2148                 return 0;
2149
2150         return attr->mode;
2151 }
2152
2153 static struct attribute *it87_attributes[] = {
2154         &dev_attr_alarms.attr,
2155         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
2156         &dev_attr_vrm.attr,                             /* 2 */
2157         &dev_attr_cpu0_vid.attr,                        /* 3 */
2158         &sensor_dev_attr_in3_label.dev_attr.attr,       /* 4 .. 7 */
2159         &sensor_dev_attr_in7_label.dev_attr.attr,
2160         &sensor_dev_attr_in8_label.dev_attr.attr,
2161         &sensor_dev_attr_in9_label.dev_attr.attr,
2162         NULL
2163 };
2164
2165 static const struct attribute_group it87_group = {
2166         .attrs = it87_attributes,
2167         .is_visible = it87_is_visible,
2168 };
2169
2170 static umode_t it87_fan_is_visible(struct kobject *kobj,
2171                                    struct attribute *attr, int index)
2172 {
2173         struct device *dev = kobj_to_dev(kobj);
2174         struct it87_data *data = dev_get_drvdata(dev);
2175         int i = index / 5;      /* fan index */
2176         int a = index % 5;      /* attribute index */
2177
2178         if (index >= 15) {      /* fan 4..6 don't have divisor attributes */
2179                 i = (index - 15) / 4 + 3;
2180                 a = (index - 15) % 4;
2181         }
2182
2183         if (!(data->has_fan & BIT(i)))
2184                 return 0;
2185
2186         if (a == 3) {                           /* beep */
2187                 if (!data->has_beep)
2188                         return 0;
2189                 /* first fan beep attribute is writable */
2190                 if (i == __ffs(data->has_fan))
2191                         return attr->mode | S_IWUSR;
2192         }
2193
2194         if (a == 4 && has_16bit_fans(data))     /* divisor */
2195                 return 0;
2196
2197         return attr->mode;
2198 }
2199
2200 static struct attribute *it87_attributes_fan[] = {
2201         &sensor_dev_attr_fan1_input.dev_attr.attr,
2202         &sensor_dev_attr_fan1_min.dev_attr.attr,
2203         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
2204         &sensor_dev_attr_fan1_beep.dev_attr.attr,       /* 3 */
2205         &sensor_dev_attr_fan1_div.dev_attr.attr,        /* 4 */
2206
2207         &sensor_dev_attr_fan2_input.dev_attr.attr,
2208         &sensor_dev_attr_fan2_min.dev_attr.attr,
2209         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
2210         &sensor_dev_attr_fan2_beep.dev_attr.attr,
2211         &sensor_dev_attr_fan2_div.dev_attr.attr,        /* 9 */
2212
2213         &sensor_dev_attr_fan3_input.dev_attr.attr,
2214         &sensor_dev_attr_fan3_min.dev_attr.attr,
2215         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
2216         &sensor_dev_attr_fan3_beep.dev_attr.attr,
2217         &sensor_dev_attr_fan3_div.dev_attr.attr,        /* 14 */
2218
2219         &sensor_dev_attr_fan4_input.dev_attr.attr,      /* 15 */
2220         &sensor_dev_attr_fan4_min.dev_attr.attr,
2221         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
2222         &sensor_dev_attr_fan4_beep.dev_attr.attr,
2223
2224         &sensor_dev_attr_fan5_input.dev_attr.attr,      /* 19 */
2225         &sensor_dev_attr_fan5_min.dev_attr.attr,
2226         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
2227         &sensor_dev_attr_fan5_beep.dev_attr.attr,
2228
2229         &sensor_dev_attr_fan6_input.dev_attr.attr,      /* 23 */
2230         &sensor_dev_attr_fan6_min.dev_attr.attr,
2231         &sensor_dev_attr_fan6_alarm.dev_attr.attr,
2232         &sensor_dev_attr_fan6_beep.dev_attr.attr,
2233         NULL
2234 };
2235
2236 static const struct attribute_group it87_group_fan = {
2237         .attrs = it87_attributes_fan,
2238         .is_visible = it87_fan_is_visible,
2239 };
2240
2241 static umode_t it87_pwm_is_visible(struct kobject *kobj,
2242                                    struct attribute *attr, int index)
2243 {
2244         struct device *dev = kobj_to_dev(kobj);
2245         struct it87_data *data = dev_get_drvdata(dev);
2246         int i = index / 4;      /* pwm index */
2247         int a = index % 4;      /* attribute index */
2248
2249         if (!(data->has_pwm & BIT(i)))
2250                 return 0;
2251
2252         /* pwmX_auto_channels_temp is only writable if auto pwm is supported */
2253         if (a == 3 && (has_old_autopwm(data) || has_newer_autopwm(data)))
2254                 return attr->mode | S_IWUSR;
2255
2256         /* pwm2_freq is writable if there are two pwm frequency selects */
2257         if (has_pwm_freq2(data) && i == 1 && a == 2)
2258                 return attr->mode | S_IWUSR;
2259
2260         return attr->mode;
2261 }
2262
2263 static struct attribute *it87_attributes_pwm[] = {
2264         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
2265         &sensor_dev_attr_pwm1.dev_attr.attr,
2266         &sensor_dev_attr_pwm1_freq.dev_attr.attr,
2267         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
2268
2269         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
2270         &sensor_dev_attr_pwm2.dev_attr.attr,
2271         &sensor_dev_attr_pwm2_freq.dev_attr.attr,
2272         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
2273
2274         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
2275         &sensor_dev_attr_pwm3.dev_attr.attr,
2276         &sensor_dev_attr_pwm3_freq.dev_attr.attr,
2277         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
2278
2279         &sensor_dev_attr_pwm4_enable.dev_attr.attr,
2280         &sensor_dev_attr_pwm4.dev_attr.attr,
2281         &sensor_dev_attr_pwm4_freq.dev_attr.attr,
2282         &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
2283
2284         &sensor_dev_attr_pwm5_enable.dev_attr.attr,
2285         &sensor_dev_attr_pwm5.dev_attr.attr,
2286         &sensor_dev_attr_pwm5_freq.dev_attr.attr,
2287         &sensor_dev_attr_pwm5_auto_channels_temp.dev_attr.attr,
2288
2289         &sensor_dev_attr_pwm6_enable.dev_attr.attr,
2290         &sensor_dev_attr_pwm6.dev_attr.attr,
2291         &sensor_dev_attr_pwm6_freq.dev_attr.attr,
2292         &sensor_dev_attr_pwm6_auto_channels_temp.dev_attr.attr,
2293
2294         NULL
2295 };
2296
2297 static const struct attribute_group it87_group_pwm = {
2298         .attrs = it87_attributes_pwm,
2299         .is_visible = it87_pwm_is_visible,
2300 };
2301
2302 static umode_t it87_auto_pwm_is_visible(struct kobject *kobj,
2303                                         struct attribute *attr, int index)
2304 {
2305         struct device *dev = kobj_to_dev(kobj);
2306         struct it87_data *data = dev_get_drvdata(dev);
2307         int i = index / 11;     /* pwm index */
2308         int a = index % 11;     /* attribute index */
2309
2310         if (index >= 33) {      /* pwm 4..6 */
2311                 i = (index - 33) / 6 + 3;
2312                 a = (index - 33) % 6 + 4;
2313         }
2314
2315         if (!(data->has_pwm & BIT(i)))
2316                 return 0;
2317
2318         if (has_newer_autopwm(data)) {
2319                 if (a < 4)      /* no auto point pwm */
2320                         return 0;
2321                 if (a == 8)     /* no auto_point4 */
2322                         return 0;
2323         }
2324         if (has_old_autopwm(data)) {
2325                 if (a >= 9)     /* no pwm_auto_start, pwm_auto_slope */
2326                         return 0;
2327         }
2328
2329         return attr->mode;
2330 }
2331
2332 static struct attribute *it87_attributes_auto_pwm[] = {
2333         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
2334         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
2335         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
2336         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
2337         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
2338         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
2339         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
2340         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
2341         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
2342         &sensor_dev_attr_pwm1_auto_start.dev_attr.attr,
2343         &sensor_dev_attr_pwm1_auto_slope.dev_attr.attr,
2344
2345         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,    /* 11 */
2346         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
2347         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
2348         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
2349         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
2350         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
2351         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
2352         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
2353         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
2354         &sensor_dev_attr_pwm2_auto_start.dev_attr.attr,
2355         &sensor_dev_attr_pwm2_auto_slope.dev_attr.attr,
2356
2357         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,    /* 22 */
2358         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
2359         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
2360         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
2361         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
2362         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
2363         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
2364         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
2365         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
2366         &sensor_dev_attr_pwm3_auto_start.dev_attr.attr,
2367         &sensor_dev_attr_pwm3_auto_slope.dev_attr.attr,
2368
2369         &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr,   /* 33 */
2370         &sensor_dev_attr_pwm4_auto_point1_temp_hyst.dev_attr.attr,
2371         &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr,
2372         &sensor_dev_attr_pwm4_auto_point3_temp.dev_attr.attr,
2373         &sensor_dev_attr_pwm4_auto_start.dev_attr.attr,
2374         &sensor_dev_attr_pwm4_auto_slope.dev_attr.attr,
2375
2376         &sensor_dev_attr_pwm5_auto_point1_temp.dev_attr.attr,
2377         &sensor_dev_attr_pwm5_auto_point1_temp_hyst.dev_attr.attr,
2378         &sensor_dev_attr_pwm5_auto_point2_temp.dev_attr.attr,
2379         &sensor_dev_attr_pwm5_auto_point3_temp.dev_attr.attr,
2380         &sensor_dev_attr_pwm5_auto_start.dev_attr.attr,
2381         &sensor_dev_attr_pwm5_auto_slope.dev_attr.attr,
2382
2383         &sensor_dev_attr_pwm6_auto_point1_temp.dev_attr.attr,
2384         &sensor_dev_attr_pwm6_auto_point1_temp_hyst.dev_attr.attr,
2385         &sensor_dev_attr_pwm6_auto_point2_temp.dev_attr.attr,
2386         &sensor_dev_attr_pwm6_auto_point3_temp.dev_attr.attr,
2387         &sensor_dev_attr_pwm6_auto_start.dev_attr.attr,
2388         &sensor_dev_attr_pwm6_auto_slope.dev_attr.attr,
2389
2390         NULL,
2391 };
2392
2393 static const struct attribute_group it87_group_auto_pwm = {
2394         .attrs = it87_attributes_auto_pwm,
2395         .is_visible = it87_auto_pwm_is_visible,
2396 };
2397
2398 /* SuperIO detection - will change isa_address if a chip is found */
2399 static int __init it87_find(int sioaddr, unsigned short *address,
2400                             struct it87_sio_data *sio_data)
2401 {
2402         int err;
2403         u16 chip_type;
2404         const struct it87_devices *config;
2405
2406         err = superio_enter(sioaddr);
2407         if (err)
2408                 return err;
2409
2410         err = -ENODEV;
2411         chip_type = superio_inw(sioaddr, DEVID);
2412         /* check first for a valid chip before forcing chip id */
2413         if (chip_type == 0xffff)
2414                 goto exit;
2415
2416         if (force_id)
2417                 chip_type = force_id;
2418
2419         switch (chip_type) {
2420         case IT8705F_DEVID:
2421                 sio_data->type = it87;
2422                 break;
2423         case IT8712F_DEVID:
2424                 sio_data->type = it8712;
2425                 break;
2426         case IT8716F_DEVID:
2427         case IT8726F_DEVID:
2428                 sio_data->type = it8716;
2429                 break;
2430         case IT8718F_DEVID:
2431                 sio_data->type = it8718;
2432                 break;
2433         case IT8720F_DEVID:
2434                 sio_data->type = it8720;
2435                 break;
2436         case IT8721F_DEVID:
2437                 sio_data->type = it8721;
2438                 break;
2439         case IT8728F_DEVID:
2440                 sio_data->type = it8728;
2441                 break;
2442         case IT8732F_DEVID:
2443                 sio_data->type = it8732;
2444                 break;
2445         case IT8792E_DEVID:
2446                 sio_data->type = it8792;
2447                 break;
2448         case IT8771E_DEVID:
2449                 sio_data->type = it8771;
2450                 break;
2451         case IT8772E_DEVID:
2452                 sio_data->type = it8772;
2453                 break;
2454         case IT8781F_DEVID:
2455                 sio_data->type = it8781;
2456                 break;
2457         case IT8782F_DEVID:
2458                 sio_data->type = it8782;
2459                 break;
2460         case IT8783E_DEVID:
2461                 sio_data->type = it8783;
2462                 break;
2463         case IT8786E_DEVID:
2464                 sio_data->type = it8786;
2465                 break;
2466         case IT8790E_DEVID:
2467                 sio_data->type = it8790;
2468                 break;
2469         case IT8603E_DEVID:
2470         case IT8623E_DEVID:
2471                 sio_data->type = it8603;
2472                 break;
2473         case IT8620E_DEVID:
2474                 sio_data->type = it8620;
2475                 break;
2476         case IT8622E_DEVID:
2477                 sio_data->type = it8622;
2478                 break;
2479         case IT8628E_DEVID:
2480                 sio_data->type = it8628;
2481                 break;
2482         case 0xffff:    /* No device at all */
2483                 goto exit;
2484         default:
2485                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
2486                 goto exit;
2487         }
2488
2489         superio_select(sioaddr, PME);
2490         if (!(superio_inb(sioaddr, IT87_ACT_REG) & 0x01)) {
2491                 pr_info("Device not activated, skipping\n");
2492                 goto exit;
2493         }
2494
2495         *address = superio_inw(sioaddr, IT87_BASE_REG) & ~(IT87_EXTENT - 1);
2496         if (*address == 0) {
2497                 pr_info("Base address not set, skipping\n");
2498                 goto exit;
2499         }
2500
2501         err = 0;
2502         sio_data->sioaddr = sioaddr;
2503         sio_data->revision = superio_inb(sioaddr, DEVREV) & 0x0f;
2504         pr_info("Found IT%04x%s chip at 0x%x, revision %d\n", chip_type,
2505                 it87_devices[sio_data->type].suffix,
2506                 *address, sio_data->revision);
2507
2508         config = &it87_devices[sio_data->type];
2509
2510         /* in7 (VSB or VCCH5V) is always internal on some chips */
2511         if (has_in7_internal(config))
2512                 sio_data->internal |= BIT(1);
2513
2514         /* in8 (Vbat) is always internal */
2515         sio_data->internal |= BIT(2);
2516
2517         /* in9 (AVCC3), always internal if supported */
2518         if (has_avcc3(config))
2519                 sio_data->internal |= BIT(3); /* in9 is AVCC */
2520         else
2521                 sio_data->skip_in |= BIT(9);
2522
2523         if (!has_five_pwm(config))
2524                 sio_data->skip_pwm |= BIT(3) | BIT(4) | BIT(5);
2525         else if (!has_six_pwm(config))
2526                 sio_data->skip_pwm |= BIT(5);
2527
2528         if (!has_vid(config))
2529                 sio_data->skip_vid = 1;
2530
2531         /* Read GPIO config and VID value from LDN 7 (GPIO) */
2532         if (sio_data->type == it87) {
2533                 /* The IT8705F has a different LD number for GPIO */
2534                 superio_select(sioaddr, 5);
2535                 sio_data->beep_pin = superio_inb(sioaddr,
2536                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
2537         } else if (sio_data->type == it8783) {
2538                 int reg25, reg27, reg2a, reg2c, regef;
2539
2540                 superio_select(sioaddr, GPIO);
2541
2542                 reg25 = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2543                 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2544                 reg2a = superio_inb(sioaddr, IT87_SIO_PINX1_REG);
2545                 reg2c = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2546                 regef = superio_inb(sioaddr, IT87_SIO_SPI_REG);
2547
2548                 /* Check if fan3 is there or not */
2549                 if ((reg27 & BIT(0)) || !(reg2c & BIT(2)))
2550                         sio_data->skip_fan |= BIT(2);
2551                 if ((reg25 & BIT(4)) ||
2552                     (!(reg2a & BIT(1)) && (regef & BIT(0))))
2553                         sio_data->skip_pwm |= BIT(2);
2554
2555                 /* Check if fan2 is there or not */
2556                 if (reg27 & BIT(7))
2557                         sio_data->skip_fan |= BIT(1);
2558                 if (reg27 & BIT(3))
2559                         sio_data->skip_pwm |= BIT(1);
2560
2561                 /* VIN5 */
2562                 if ((reg27 & BIT(0)) || (reg2c & BIT(2)))
2563                         sio_data->skip_in |= BIT(5); /* No VIN5 */
2564
2565                 /* VIN6 */
2566                 if (reg27 & BIT(1))
2567                         sio_data->skip_in |= BIT(6); /* No VIN6 */
2568
2569                 /*
2570                  * VIN7
2571                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
2572                  */
2573                 if (reg27 & BIT(2)) {
2574                         /*
2575                          * The data sheet is a bit unclear regarding the
2576                          * internal voltage divider for VCCH5V. It says
2577                          * "This bit enables and switches VIN7 (pin 91) to the
2578                          * internal voltage divider for VCCH5V".
2579                          * This is different to other chips, where the internal
2580                          * voltage divider would connect VIN7 to an internal
2581                          * voltage source. Maybe that is the case here as well.
2582                          *
2583                          * Since we don't know for sure, re-route it if that is
2584                          * not the case, and ask the user to report if the
2585                          * resulting voltage is sane.
2586                          */
2587                         if (!(reg2c & BIT(1))) {
2588                                 reg2c |= BIT(1);
2589                                 superio_outb(sioaddr, IT87_SIO_PINX2_REG,
2590                                              reg2c);
2591                                 sio_data->need_in7_reroute = true;
2592                                 pr_notice("Routing internal VCCH5V to in7.\n");
2593                         }
2594                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
2595                         pr_notice("Please report if it displays a reasonable voltage.\n");
2596                 }
2597
2598                 if (reg2c & BIT(0))
2599                         sio_data->internal |= BIT(0);
2600                 if (reg2c & BIT(1))
2601                         sio_data->internal |= BIT(1);
2602
2603                 sio_data->beep_pin = superio_inb(sioaddr,
2604                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
2605         } else if (sio_data->type == it8603) {
2606                 int reg27, reg29;
2607
2608                 superio_select(sioaddr, GPIO);
2609
2610                 reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2611
2612                 /* Check if fan3 is there or not */
2613                 if (reg27 & BIT(6))
2614                         sio_data->skip_pwm |= BIT(2);
2615                 if (reg27 & BIT(7))
2616                         sio_data->skip_fan |= BIT(2);
2617
2618                 /* Check if fan2 is there or not */
2619                 reg29 = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2620                 if (reg29 & BIT(1))
2621                         sio_data->skip_pwm |= BIT(1);
2622                 if (reg29 & BIT(2))
2623                         sio_data->skip_fan |= BIT(1);
2624
2625                 sio_data->skip_in |= BIT(5); /* No VIN5 */
2626                 sio_data->skip_in |= BIT(6); /* No VIN6 */
2627
2628                 sio_data->beep_pin = superio_inb(sioaddr,
2629                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
2630         } else if (sio_data->type == it8620 || sio_data->type == it8628) {
2631                 int reg;
2632
2633                 superio_select(sioaddr, GPIO);
2634
2635                 /* Check for pwm5 */
2636                 reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2637                 if (reg & BIT(6))
2638                         sio_data->skip_pwm |= BIT(4);
2639
2640                 /* Check for fan4, fan5 */
2641                 reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
2642                 if (!(reg & BIT(5)))
2643                         sio_data->skip_fan |= BIT(3);
2644                 if (!(reg & BIT(4)))
2645                         sio_data->skip_fan |= BIT(4);
2646
2647                 /* Check for pwm3, fan3 */
2648                 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2649                 if (reg & BIT(6))
2650                         sio_data->skip_pwm |= BIT(2);
2651                 if (reg & BIT(7))
2652                         sio_data->skip_fan |= BIT(2);
2653
2654                 /* Check for pwm4 */
2655                 reg = superio_inb(sioaddr, IT87_SIO_GPIO4_REG);
2656                 if (reg & BIT(2))
2657                         sio_data->skip_pwm |= BIT(3);
2658
2659                 /* Check for pwm2, fan2 */
2660                 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2661                 if (reg & BIT(1))
2662                         sio_data->skip_pwm |= BIT(1);
2663                 if (reg & BIT(2))
2664                         sio_data->skip_fan |= BIT(1);
2665                 /* Check for pwm6, fan6 */
2666                 if (!(reg & BIT(7))) {
2667                         sio_data->skip_pwm |= BIT(5);
2668                         sio_data->skip_fan |= BIT(5);
2669                 }
2670
2671                 /* Check if AVCC is on VIN3 */
2672                 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2673                 if (reg & BIT(0))
2674                         sio_data->internal |= BIT(0);
2675                 else
2676                         sio_data->skip_in |= BIT(9);
2677
2678                 sio_data->beep_pin = superio_inb(sioaddr,
2679                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
2680         } else if (sio_data->type == it8622) {
2681                 int reg;
2682
2683                 superio_select(sioaddr, GPIO);
2684
2685                 /* Check for pwm4, fan4 */
2686                 reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
2687                 if (reg & BIT(6))
2688                         sio_data->skip_fan |= BIT(3);
2689                 if (reg & BIT(5))
2690                         sio_data->skip_pwm |= BIT(3);
2691
2692                 /* Check for pwm3, fan3, pwm5, fan5 */
2693                 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2694                 if (reg & BIT(6))
2695                         sio_data->skip_pwm |= BIT(2);
2696                 if (reg & BIT(7))
2697                         sio_data->skip_fan |= BIT(2);
2698                 if (reg & BIT(3))
2699                         sio_data->skip_pwm |= BIT(4);
2700                 if (reg & BIT(1))
2701                         sio_data->skip_fan |= BIT(4);
2702
2703                 /* Check for pwm2, fan2 */
2704                 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2705                 if (reg & BIT(1))
2706                         sio_data->skip_pwm |= BIT(1);
2707                 if (reg & BIT(2))
2708                         sio_data->skip_fan |= BIT(1);
2709
2710                 /* Check for AVCC */
2711                 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2712                 if (!(reg & BIT(0)))
2713                         sio_data->skip_in |= BIT(9);
2714
2715                 sio_data->beep_pin = superio_inb(sioaddr,
2716                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
2717         } else {
2718                 int reg;
2719                 bool uart6;
2720
2721                 superio_select(sioaddr, GPIO);
2722
2723                 /* Check for fan4, fan5 */
2724                 if (has_five_fans(config)) {
2725                         reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
2726                         switch (sio_data->type) {
2727                         case it8718:
2728                                 if (reg & BIT(5))
2729                                         sio_data->skip_fan |= BIT(3);
2730                                 if (reg & BIT(4))
2731                                         sio_data->skip_fan |= BIT(4);
2732                                 break;
2733                         case it8720:
2734                         case it8721:
2735                         case it8728:
2736                                 if (!(reg & BIT(5)))
2737                                         sio_data->skip_fan |= BIT(3);
2738                                 if (!(reg & BIT(4)))
2739                                         sio_data->skip_fan |= BIT(4);
2740                                 break;
2741                         default:
2742                                 break;
2743                         }
2744                 }
2745
2746                 reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
2747                 if (!sio_data->skip_vid) {
2748                         /* We need at least 4 VID pins */
2749                         if (reg & 0x0f) {
2750                                 pr_info("VID is disabled (pins used for GPIO)\n");
2751                                 sio_data->skip_vid = 1;
2752                         }
2753                 }
2754
2755                 /* Check if fan3 is there or not */
2756                 if (reg & BIT(6))
2757                         sio_data->skip_pwm |= BIT(2);
2758                 if (reg & BIT(7))
2759                         sio_data->skip_fan |= BIT(2);
2760
2761                 /* Check if fan2 is there or not */
2762                 reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
2763                 if (reg & BIT(1))
2764                         sio_data->skip_pwm |= BIT(1);
2765                 if (reg & BIT(2))
2766                         sio_data->skip_fan |= BIT(1);
2767
2768                 if ((sio_data->type == it8718 || sio_data->type == it8720) &&
2769                     !(sio_data->skip_vid))
2770                         sio_data->vid_value = superio_inb(sioaddr,
2771                                                           IT87_SIO_VID_REG);
2772
2773                 reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
2774
2775                 uart6 = sio_data->type == it8782 && (reg & BIT(2));
2776
2777                 /*
2778                  * The IT8720F has no VIN7 pin, so VCCH5V should always be
2779                  * routed internally to VIN7 with an internal divider.
2780                  * Curiously, there still is a configuration bit to control
2781                  * this, which means it can be set incorrectly. And even
2782                  * more curiously, many boards out there are improperly
2783                  * configured, even though the IT8720F datasheet claims
2784                  * that the internal routing of VCCH5V to VIN7 is the default
2785                  * setting. So we force the internal routing in this case.
2786                  *
2787                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
2788                  * If UART6 is enabled, re-route VIN7 to the internal divider
2789                  * if that is not already the case.
2790                  */
2791                 if ((sio_data->type == it8720 || uart6) && !(reg & BIT(1))) {
2792                         reg |= BIT(1);
2793                         superio_outb(sioaddr, IT87_SIO_PINX2_REG, reg);
2794                         sio_data->need_in7_reroute = true;
2795                         pr_notice("Routing internal VCCH5V to in7\n");
2796                 }
2797                 if (reg & BIT(0))
2798                         sio_data->internal |= BIT(0);
2799                 if (reg & BIT(1))
2800                         sio_data->internal |= BIT(1);
2801
2802                 /*
2803                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
2804                  * While VIN7 can be routed to the internal voltage divider,
2805                  * VIN5 and VIN6 are not available if UART6 is enabled.
2806                  *
2807                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
2808                  * is the temperature source. Since we can not read the
2809                  * temperature source here, skip_temp is preliminary.
2810                  */
2811                 if (uart6) {
2812                         sio_data->skip_in |= BIT(5) | BIT(6);
2813                         sio_data->skip_temp |= BIT(2);
2814                 }
2815
2816                 sio_data->beep_pin = superio_inb(sioaddr,
2817                                                  IT87_SIO_BEEP_PIN_REG) & 0x3f;
2818         }
2819         if (sio_data->beep_pin)
2820                 pr_info("Beeping is supported\n");
2821
2822         /* Set values based on DMI matches */
2823         if (dmi_data)
2824                 sio_data->skip_pwm |= dmi_data->skip_pwm;
2825
2826 exit:
2827         superio_exit(sioaddr);
2828         return err;
2829 }
2830
2831 /*
2832  * Some chips seem to have default value 0xff for all limit
2833  * registers. For low voltage limits it makes no sense and triggers
2834  * alarms, so change to 0 instead. For high temperature limits, it
2835  * means -1 degree C, which surprisingly doesn't trigger an alarm,
2836  * but is still confusing, so change to 127 degrees C.
2837  */
2838 static void it87_check_limit_regs(struct it87_data *data)
2839 {
2840         int i, reg;
2841
2842         for (i = 0; i < NUM_VIN_LIMIT; i++) {
2843                 reg = it87_read_value(data, IT87_REG_VIN_MIN(i));
2844                 if (reg == 0xff)
2845                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2846         }
2847         for (i = 0; i < NUM_TEMP_LIMIT; i++) {
2848                 reg = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2849                 if (reg == 0xff)
2850                         it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2851         }
2852 }
2853
2854 /* Check if voltage monitors are reset manually or by some reason */
2855 static void it87_check_voltage_monitors_reset(struct it87_data *data)
2856 {
2857         int reg;
2858
2859         reg = it87_read_value(data, IT87_REG_VIN_ENABLE);
2860         if ((reg & 0xff) == 0) {
2861                 /* Enable all voltage monitors */
2862                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2863         }
2864 }
2865
2866 /* Check if tachometers are reset manually or by some reason */
2867 static void it87_check_tachometers_reset(struct platform_device *pdev)
2868 {
2869         struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
2870         struct it87_data *data = platform_get_drvdata(pdev);
2871         u8 mask, fan_main_ctrl;
2872
2873         mask = 0x70 & ~(sio_data->skip_fan << 4);
2874         fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2875         if ((fan_main_ctrl & mask) == 0) {
2876                 /* Enable all fan tachometers */
2877                 fan_main_ctrl |= mask;
2878                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2879                                  fan_main_ctrl);
2880         }
2881 }
2882
2883 /* Set tachometers to 16-bit mode if needed */
2884 static void it87_check_tachometers_16bit_mode(struct platform_device *pdev)
2885 {
2886         struct it87_data *data = platform_get_drvdata(pdev);
2887         int reg;
2888
2889         if (!has_fan16_config(data))
2890                 return;
2891
2892         reg = it87_read_value(data, IT87_REG_FAN_16BIT);
2893         if (~reg & 0x07 & data->has_fan) {
2894                 dev_dbg(&pdev->dev,
2895                         "Setting fan1-3 to 16-bit mode\n");
2896                 it87_write_value(data, IT87_REG_FAN_16BIT,
2897                                  reg | 0x07);
2898         }
2899 }
2900
2901 static void it87_start_monitoring(struct it87_data *data)
2902 {
2903         it87_write_value(data, IT87_REG_CONFIG,
2904                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2905                          | (update_vbat ? 0x41 : 0x01));
2906 }
2907
2908 /* Called when we have found a new IT87. */
2909 static void it87_init_device(struct platform_device *pdev)
2910 {
2911         struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev);
2912         struct it87_data *data = platform_get_drvdata(pdev);
2913         int tmp, i;
2914
2915         /*
2916          * For each PWM channel:
2917          * - If it is in automatic mode, setting to manual mode should set
2918          *   the fan to full speed by default.
2919          * - If it is in manual mode, we need a mapping to temperature
2920          *   channels to use when later setting to automatic mode later.
2921          *   Use a 1:1 mapping by default (we are clueless.)
2922          * In both cases, the value can (and should) be changed by the user
2923          * prior to switching to a different mode.
2924          * Note that this is no longer needed for the IT8721F and later, as
2925          * these have separate registers for the temperature mapping and the
2926          * manual duty cycle.
2927          */
2928         for (i = 0; i < NUM_AUTO_PWM; i++) {
2929                 data->pwm_temp_map[i] = i;
2930                 data->pwm_duty[i] = 0x7f;       /* Full speed */
2931                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2932         }
2933
2934         it87_check_limit_regs(data);
2935
2936         /*
2937          * Temperature channels are not forcibly enabled, as they can be
2938          * set to two different sensor types and we can't guess which one
2939          * is correct for a given system. These channels can be enabled at
2940          * run-time through the temp{1-3}_type sysfs accessors if needed.
2941          */
2942
2943         it87_check_voltage_monitors_reset(data);
2944
2945         it87_check_tachometers_reset(pdev);
2946
2947         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2948         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2949
2950         it87_check_tachometers_16bit_mode(pdev);
2951
2952         /* Check for additional fans */
2953         if (has_five_fans(data)) {
2954                 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2955
2956                 if (tmp & BIT(4))
2957                         data->has_fan |= BIT(3); /* fan4 enabled */
2958                 if (tmp & BIT(5))
2959                         data->has_fan |= BIT(4); /* fan5 enabled */
2960                 if (has_six_fans(data) && (tmp & BIT(2)))
2961                         data->has_fan |= BIT(5); /* fan6 enabled */
2962         }
2963
2964         /* Fan input pins may be used for alternative functions */
2965         data->has_fan &= ~sio_data->skip_fan;
2966
2967         /* Check if pwm5, pwm6 are enabled */
2968         if (has_six_pwm(data)) {
2969                 /* The following code may be IT8620E specific */
2970                 tmp = it87_read_value(data, IT87_REG_FAN_DIV);
2971                 if ((tmp & 0xc0) == 0xc0)
2972                         sio_data->skip_pwm |= BIT(4);
2973                 if (!(tmp & BIT(3)))
2974                         sio_data->skip_pwm |= BIT(5);
2975         }
2976
2977         it87_start_monitoring(data);
2978 }
2979
2980 /* Return 1 if and only if the PWM interface is safe to use */
2981 static int it87_check_pwm(struct device *dev)
2982 {
2983         struct it87_data *data = dev_get_drvdata(dev);
2984         /*
2985          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2986          * and polarity set to active low is sign that this is the case so we
2987          * disable pwm control to protect the user.
2988          */
2989         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2990
2991         if ((tmp & 0x87) == 0) {
2992                 if (fix_pwm_polarity) {
2993                         /*
2994                          * The user asks us to attempt a chip reconfiguration.
2995                          * This means switching to active high polarity and
2996                          * inverting all fan speed values.
2997                          */
2998                         int i;
2999                         u8 pwm[3];
3000
3001                         for (i = 0; i < ARRAY_SIZE(pwm); i++)
3002                                 pwm[i] = it87_read_value(data,
3003                                                          IT87_REG_PWM[i]);
3004
3005                         /*
3006                          * If any fan is in automatic pwm mode, the polarity
3007                          * might be correct, as suspicious as it seems, so we
3008                          * better don't change anything (but still disable the
3009                          * PWM interface).
3010                          */
3011                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
3012                                 dev_info(dev,
3013                                          "Reconfiguring PWM to active high polarity\n");
3014                                 it87_write_value(data, IT87_REG_FAN_CTL,
3015                                                  tmp | 0x87);
3016                                 for (i = 0; i < 3; i++)
3017                                         it87_write_value(data,
3018                                                          IT87_REG_PWM[i],
3019                                                          0x7f & ~pwm[i]);
3020                                 return 1;
3021                         }
3022
3023                         dev_info(dev,
3024                                  "PWM configuration is too broken to be fixed\n");
3025                 }
3026
3027                 return 0;
3028         } else if (fix_pwm_polarity) {
3029                 dev_info(dev,
3030                          "PWM configuration looks sane, won't touch\n");
3031         }
3032
3033         return 1;
3034 }
3035
3036 static int it87_probe(struct platform_device *pdev)
3037 {
3038         struct it87_data *data;
3039         struct resource *res;
3040         struct device *dev = &pdev->dev;
3041         struct it87_sio_data *sio_data = dev_get_platdata(dev);
3042         int enable_pwm_interface;
3043         struct device *hwmon_dev;
3044
3045         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
3046         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
3047                                  DRVNAME)) {
3048                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
3049                         (unsigned long)res->start,
3050                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
3051                 return -EBUSY;
3052         }
3053
3054         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
3055         if (!data)
3056                 return -ENOMEM;
3057
3058         data->addr = res->start;
3059         data->sioaddr = sio_data->sioaddr;
3060         data->type = sio_data->type;
3061         data->features = it87_devices[sio_data->type].features;
3062         data->peci_mask = it87_devices[sio_data->type].peci_mask;
3063         data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
3064         /*
3065          * IT8705F Datasheet 0.4.1, 3h == Version G.
3066          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
3067          * These are the first revisions with 16-bit tachometer support.
3068          */
3069         switch (data->type) {
3070         case it87:
3071                 if (sio_data->revision >= 0x03) {
3072                         data->features &= ~FEAT_OLD_AUTOPWM;
3073                         data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS;
3074                 }
3075                 break;
3076         case it8712:
3077                 if (sio_data->revision >= 0x08) {
3078                         data->features &= ~FEAT_OLD_AUTOPWM;
3079                         data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS |
3080                                           FEAT_FIVE_FANS;
3081                 }
3082                 break;
3083         default:
3084                 break;
3085         }
3086
3087         /* Now, we do the remaining detection. */
3088         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) ||
3089             it87_read_value(data, IT87_REG_CHIPID) != 0x90)
3090                 return -ENODEV;
3091
3092         platform_set_drvdata(pdev, data);
3093
3094         mutex_init(&data->update_lock);
3095
3096         /* Check PWM configuration */
3097         enable_pwm_interface = it87_check_pwm(dev);
3098         if (!enable_pwm_interface)
3099                 dev_info(dev,
3100                          "Detected broken BIOS defaults, disabling PWM interface\n");
3101
3102         /* Starting with IT8721F, we handle scaling of internal voltages */
3103         if (has_12mv_adc(data)) {
3104                 if (sio_data->internal & BIT(0))
3105                         data->in_scaled |= BIT(3);      /* in3 is AVCC */
3106                 if (sio_data->internal & BIT(1))
3107                         data->in_scaled |= BIT(7);      /* in7 is VSB */
3108                 if (sio_data->internal & BIT(2))
3109                         data->in_scaled |= BIT(8);      /* in8 is Vbat */
3110                 if (sio_data->internal & BIT(3))
3111                         data->in_scaled |= BIT(9);      /* in9 is AVCC */
3112         } else if (sio_data->type == it8781 || sio_data->type == it8782 ||
3113                    sio_data->type == it8783) {
3114                 if (sio_data->internal & BIT(0))
3115                         data->in_scaled |= BIT(3);      /* in3 is VCC5V */
3116                 if (sio_data->internal & BIT(1))
3117                         data->in_scaled |= BIT(7);      /* in7 is VCCH5V */
3118         }
3119
3120         data->has_temp = 0x07;
3121         if (sio_data->skip_temp & BIT(2)) {
3122                 if (sio_data->type == it8782 &&
3123                     !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
3124                         data->has_temp &= ~BIT(2);
3125         }
3126
3127         data->in_internal = sio_data->internal;
3128         data->need_in7_reroute = sio_data->need_in7_reroute;
3129         data->has_in = 0x3ff & ~sio_data->skip_in;
3130
3131         if (has_six_temp(data)) {
3132                 u8 reg = it87_read_value(data, IT87_REG_TEMP456_ENABLE);
3133
3134                 /* Check for additional temperature sensors */
3135                 if ((reg & 0x03) >= 0x02)
3136                         data->has_temp |= BIT(3);
3137                 if (((reg >> 2) & 0x03) >= 0x02)
3138                         data->has_temp |= BIT(4);
3139                 if (((reg >> 4) & 0x03) >= 0x02)
3140                         data->has_temp |= BIT(5);
3141
3142                 /* Check for additional voltage sensors */
3143                 if ((reg & 0x03) == 0x01)
3144                         data->has_in |= BIT(10);
3145                 if (((reg >> 2) & 0x03) == 0x01)
3146                         data->has_in |= BIT(11);
3147                 if (((reg >> 4) & 0x03) == 0x01)
3148                         data->has_in |= BIT(12);
3149         }
3150
3151         data->has_beep = !!sio_data->beep_pin;
3152
3153         /* Initialize the IT87 chip */
3154         it87_init_device(pdev);
3155
3156         if (!sio_data->skip_vid) {
3157                 data->has_vid = true;
3158                 data->vrm = vid_which_vrm();
3159                 /* VID reading from Super-I/O config space if available */
3160                 data->vid = sio_data->vid_value;
3161         }
3162
3163         /* Prepare for sysfs hooks */
3164         data->groups[0] = &it87_group;
3165         data->groups[1] = &it87_group_in;
3166         data->groups[2] = &it87_group_temp;
3167         data->groups[3] = &it87_group_fan;
3168
3169         if (enable_pwm_interface) {
3170                 data->has_pwm = BIT(ARRAY_SIZE(IT87_REG_PWM)) - 1;
3171                 data->has_pwm &= ~sio_data->skip_pwm;
3172
3173                 data->groups[4] = &it87_group_pwm;
3174                 if (has_old_autopwm(data) || has_newer_autopwm(data))
3175                         data->groups[5] = &it87_group_auto_pwm;
3176         }
3177
3178         hwmon_dev = devm_hwmon_device_register_with_groups(dev,
3179                                         it87_devices[sio_data->type].name,
3180                                         data, data->groups);
3181         return PTR_ERR_OR_ZERO(hwmon_dev);
3182 }
3183
3184 static void it87_resume_sio(struct platform_device *pdev)
3185 {
3186         struct it87_data *data = dev_get_drvdata(&pdev->dev);
3187         int err;
3188         int reg2c;
3189
3190         if (!data->need_in7_reroute)
3191                 return;
3192
3193         err = superio_enter(data->sioaddr);
3194         if (err) {
3195                 dev_warn(&pdev->dev,
3196                          "Unable to enter Super I/O to reroute in7 (%d)",
3197                          err);
3198                 return;
3199         }
3200
3201         superio_select(data->sioaddr, GPIO);
3202
3203         reg2c = superio_inb(data->sioaddr, IT87_SIO_PINX2_REG);
3204         if (!(reg2c & BIT(1))) {
3205                 dev_dbg(&pdev->dev,
3206                         "Routing internal VCCH5V to in7 again");
3207
3208                 reg2c |= BIT(1);
3209                 superio_outb(data->sioaddr, IT87_SIO_PINX2_REG,
3210                              reg2c);
3211         }
3212
3213         superio_exit(data->sioaddr);
3214 }
3215
3216 static int it87_resume(struct device *dev)
3217 {
3218         struct platform_device *pdev = to_platform_device(dev);
3219         struct it87_data *data = dev_get_drvdata(dev);
3220
3221         it87_resume_sio(pdev);
3222
3223         mutex_lock(&data->update_lock);
3224
3225         it87_check_pwm(dev);
3226         it87_check_limit_regs(data);
3227         it87_check_voltage_monitors_reset(data);
3228         it87_check_tachometers_reset(pdev);
3229         it87_check_tachometers_16bit_mode(pdev);
3230
3231         it87_start_monitoring(data);
3232
3233         /* force update */
3234         data->valid = false;
3235
3236         mutex_unlock(&data->update_lock);
3237
3238         it87_update_device(dev);
3239
3240         return 0;
3241 }
3242
3243 static DEFINE_SIMPLE_DEV_PM_OPS(it87_dev_pm_ops, NULL, it87_resume);
3244
3245 static struct platform_driver it87_driver = {
3246         .driver = {
3247                 .name   = DRVNAME,
3248                 .pm     = pm_sleep_ptr(&it87_dev_pm_ops),
3249         },
3250         .probe  = it87_probe,
3251 };
3252
3253 static int __init it87_device_add(int index, unsigned short address,
3254                                   const struct it87_sio_data *sio_data)
3255 {
3256         struct platform_device *pdev;
3257         struct resource res = {
3258                 .start  = address + IT87_EC_OFFSET,
3259                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
3260                 .name   = DRVNAME,
3261                 .flags  = IORESOURCE_IO,
3262         };
3263         int err;
3264
3265         err = acpi_check_resource_conflict(&res);
3266         if (err) {
3267                 if (!ignore_resource_conflict)
3268                         return err;
3269         }
3270
3271         pdev = platform_device_alloc(DRVNAME, address);
3272         if (!pdev)
3273                 return -ENOMEM;
3274
3275         err = platform_device_add_resources(pdev, &res, 1);
3276         if (err) {
3277                 pr_err("Device resource addition failed (%d)\n", err);
3278                 goto exit_device_put;
3279         }
3280
3281         err = platform_device_add_data(pdev, sio_data,
3282                                        sizeof(struct it87_sio_data));
3283         if (err) {
3284                 pr_err("Platform data allocation failed\n");
3285                 goto exit_device_put;
3286         }
3287
3288         err = platform_device_add(pdev);
3289         if (err) {
3290                 pr_err("Device addition failed (%d)\n", err);
3291                 goto exit_device_put;
3292         }
3293
3294         it87_pdev[index] = pdev;
3295         return 0;
3296
3297 exit_device_put:
3298         platform_device_put(pdev);
3299         return err;
3300 }
3301
3302 /* callback function for DMI */
3303 static int it87_dmi_cb(const struct dmi_system_id *dmi_entry)
3304 {
3305         dmi_data = dmi_entry->driver_data;
3306
3307         if (dmi_data && dmi_data->skip_pwm)
3308                 pr_info("Disabling pwm2 due to hardware constraints\n");
3309
3310         return 1;
3311 }
3312
3313 /*
3314  * On the Shuttle SN68PT, FAN_CTL2 is apparently not
3315  * connected to a fan, but to something else. One user
3316  * has reported instant system power-off when changing
3317  * the PWM2 duty cycle, so we disable it.
3318  * I use the board name string as the trigger in case
3319  * the same board is ever used in other systems.
3320  */
3321 static struct it87_dmi_data nvidia_fn68pt = {
3322         .skip_pwm = BIT(1),
3323 };
3324
3325 #define IT87_DMI_MATCH_VND(vendor, name, cb, data) \
3326         { \
3327                 .callback = cb, \
3328                 .matches = { \
3329                         DMI_EXACT_MATCH(DMI_BOARD_VENDOR, vendor), \
3330                         DMI_EXACT_MATCH(DMI_BOARD_NAME, name), \
3331                 }, \
3332                 .driver_data = data, \
3333         }
3334
3335 static const struct dmi_system_id it87_dmi_table[] __initconst = {
3336         IT87_DMI_MATCH_VND("nVIDIA", "FN68PT", it87_dmi_cb, &nvidia_fn68pt),
3337         { }
3338
3339 };
3340 MODULE_DEVICE_TABLE(dmi, it87_dmi_table);
3341
3342 static int __init sm_it87_init(void)
3343 {
3344         int sioaddr[2] = { REG_2E, REG_4E };
3345         struct it87_sio_data sio_data;
3346         unsigned short isa_address[2];
3347         bool found = false;
3348         int i, err;
3349
3350         err = platform_driver_register(&it87_driver);
3351         if (err)
3352                 return err;
3353
3354         dmi_check_system(it87_dmi_table);
3355
3356         for (i = 0; i < ARRAY_SIZE(sioaddr); i++) {
3357                 memset(&sio_data, 0, sizeof(struct it87_sio_data));
3358                 isa_address[i] = 0;
3359                 err = it87_find(sioaddr[i], &isa_address[i], &sio_data);
3360                 if (err || isa_address[i] == 0)
3361                         continue;
3362                 /*
3363                  * Don't register second chip if its ISA address matches
3364                  * the first chip's ISA address.
3365                  */
3366                 if (i && isa_address[i] == isa_address[0])
3367                         break;
3368
3369                 err = it87_device_add(i, isa_address[i], &sio_data);
3370                 if (err)
3371                         goto exit_dev_unregister;
3372
3373                 found = true;
3374
3375                 /*
3376                  * IT8705F may respond on both SIO addresses.
3377                  * Stop probing after finding one.
3378                  */
3379                 if (sio_data.type == it87)
3380                         break;
3381         }
3382
3383         if (!found) {
3384                 err = -ENODEV;
3385                 goto exit_unregister;
3386         }
3387         return 0;
3388
3389 exit_dev_unregister:
3390         /* NULL check handled by platform_device_unregister */
3391         platform_device_unregister(it87_pdev[0]);
3392 exit_unregister:
3393         platform_driver_unregister(&it87_driver);
3394         return err;
3395 }
3396
3397 static void __exit sm_it87_exit(void)
3398 {
3399         /* NULL check handled by platform_device_unregister */
3400         platform_device_unregister(it87_pdev[1]);
3401         platform_device_unregister(it87_pdev[0]);
3402         platform_driver_unregister(&it87_driver);
3403 }
3404
3405 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <[email protected]>");
3406 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
3407 module_param(update_vbat, bool, 0);
3408 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
3409 module_param(fix_pwm_polarity, bool, 0);
3410 MODULE_PARM_DESC(fix_pwm_polarity,
3411                  "Force PWM polarity to active high (DANGEROUS)");
3412 MODULE_LICENSE("GPL");
3413
3414 module_init(sm_it87_init);
3415 module_exit(sm_it87_exit);