drivers/hwmon/it87.c

   1 /*
   2  *  it87.c - Part of lm_sensors, Linux kernel modules for hardware
   3  *           monitoring.
   4  *
   5  *  The IT8705F is an LPC-based Super I/O part that contains UARTs, a
   6  *  parallel port, an IR port, a MIDI port, a floppy controller, etc., in
   7  *  addition to an Environment Controller (Enhanced Hardware Monitor and
   8  *  Fan Controller)
   9  *
  10  *  This driver supports only the Environment Controller in the IT8705F and
  11  *  similar parts.  The other devices are supported by different drivers.
  12  *
  13  *  Supports: IT8705F  Super I/O chip w/LPC interface
  14  *            IT8712F  Super I/O chip w/LPC interface
  15  *            IT8716F  Super I/O chip w/LPC interface
  16  *            IT8718F  Super I/O chip w/LPC interface
  17  *            IT8720F  Super I/O chip w/LPC interface
  18  *            IT8721F  Super I/O chip w/LPC interface
  19  *            IT8726F  Super I/O chip w/LPC interface
  20  *            IT8728F  Super I/O chip w/LPC interface
  21  *            IT8758E  Super I/O chip w/LPC interface
  22  *            IT8782F  Super I/O chip w/LPC interface
  23  *            IT8783E/F Super I/O chip w/LPC interface
  24  *            Sis950   A clone of the IT8705F
  25  *
  26  *  Copyright (C) 2001 Chris Gauthron
  27  *  Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
  28  *
  29  *  This program is free software; you can redistribute it and/or modify
  30  *  it under the terms of the GNU General Public License as published by
  31  *  the Free Software Foundation; either version 2 of the License, or
  32  *  (at your option) any later version.
  33  *
  34  *  This program is distributed in the hope that it will be useful,
  35  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  36  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  37  *  GNU General Public License for more details.
  38  *
  39  *  You should have received a copy of the GNU General Public License
  40  *  along with this program; if not, write to the Free Software
  41  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  42  */
  43
  44 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  45
  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, it8782,
  65              it8783 };
  66
  67 static unsigned short force_id;
  68 module_param(force_id, ushort, 0);
  69 MODULE_PARM_DESC(force_id, "Override the detected device ID");
  70
  71 static struct platform_device *pdev;
  72
  73 #define REG     0x2e    /* The register to read/write */
  74 #define DEV     0x07    /* Register: Logical device select */
  75 #define VAL     0x2f    /* The value to read/write */
  76 #define PME     0x04    /* The device with the fan registers in it */
  77
  78 /* The device with the IT8718F/IT8720F VID value in it */
  79 #define GPIO    0x07
  80
  81 #define DEVID   0x20    /* Register: Device ID */
  82 #define DEVREV  0x22    /* Register: Device Revision */
  83
  84 static inline int superio_inb(int reg)
  85 {
  86         outb(reg, REG);
  87         return inb(VAL);
  88 }
  89
  90 static inline void superio_outb(int reg, int val)
  91 {
  92         outb(reg, REG);
  93         outb(val, VAL);
  94 }
  95
  96 static int superio_inw(int reg)
  97 {
  98         int val;
  99         outb(reg++, REG);
 100         val = inb(VAL) << 8;
 101         outb(reg, REG);
 102         val |= inb(VAL);
 103         return val;
 104 }
 105
 106 static inline void superio_select(int ldn)
 107 {
 108         outb(DEV, REG);
 109         outb(ldn, VAL);
 110 }
 111
 112 static inline int superio_enter(void)
 113 {
 114         /*
 115          * Try to reserve REG and REG + 1 for exclusive access.
 116          */
 117         if (!request_muxed_region(REG, 2, DRVNAME))
 118                 return -EBUSY;
 119
 120         outb(0x87, REG);
 121         outb(0x01, REG);
 122         outb(0x55, REG);
 123         outb(0x55, REG);
 124         return 0;
 125 }
 126
 127 static inline void superio_exit(void)
 128 {
 129         outb(0x02, REG);
 130         outb(0x02, VAL);
 131         release_region(REG, 2);
 132 }
 133
 134 /* Logical device 4 registers */
 135 #define IT8712F_DEVID 0x8712
 136 #define IT8705F_DEVID 0x8705
 137 #define IT8716F_DEVID 0x8716
 138 #define IT8718F_DEVID 0x8718
 139 #define IT8720F_DEVID 0x8720
 140 #define IT8721F_DEVID 0x8721
 141 #define IT8726F_DEVID 0x8726
 142 #define IT8728F_DEVID 0x8728
 143 #define IT8782F_DEVID 0x8782
 144 #define IT8783E_DEVID 0x8783
 145 #define IT87_ACT_REG  0x30
 146 #define IT87_BASE_REG 0x60
 147
 148 /* Logical device 7 registers (IT8712F and later) */
 149 #define IT87_SIO_GPIO1_REG      0x25
 150 #define IT87_SIO_GPIO3_REG      0x27
 151 #define IT87_SIO_GPIO5_REG      0x29
 152 #define IT87_SIO_PINX1_REG      0x2a    /* Pin selection */
 153 #define IT87_SIO_PINX2_REG      0x2c    /* Pin selection */
 154 #define IT87_SIO_SPI_REG        0xef    /* SPI function pin select */
 155 #define IT87_SIO_VID_REG        0xfc    /* VID value */
 156 #define IT87_SIO_BEEP_PIN_REG   0xf6    /* Beep pin mapping */
 157
 158 /* Update battery voltage after every reading if true */
 159 static bool update_vbat;
 160
 161 /* Not all BIOSes properly configure the PWM registers */
 162 static bool fix_pwm_polarity;
 163
 164 /* Many IT87 constants specified below */
 165
 166 /* Length of ISA address segment */
 167 #define IT87_EXTENT 8
 168
 169 /* Length of ISA address segment for Environmental Controller */
 170 #define IT87_EC_EXTENT 2
 171
 172 /* Offset of EC registers from ISA base address */
 173 #define IT87_EC_OFFSET 5
 174
 175 /* Where are the ISA address/data registers relative to the EC base address */
 176 #define IT87_ADDR_REG_OFFSET 0
 177 #define IT87_DATA_REG_OFFSET 1
 178
 179 /*----- The IT87 registers -----*/
 180
 181 #define IT87_REG_CONFIG        0x00
 182
 183 #define IT87_REG_ALARM1        0x01
 184 #define IT87_REG_ALARM2        0x02
 185 #define IT87_REG_ALARM3        0x03
 186
 187 /*
 188  * The IT8718F and IT8720F have the VID value in a different register, in
 189  * Super-I/O configuration space.
 190  */
 191 #define IT87_REG_VID           0x0a
 192 /*
 193  * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
 194  * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
 195  * mode.
 196  */
 197 #define IT87_REG_FAN_DIV       0x0b
 198 #define IT87_REG_FAN_16BIT     0x0c
 199
 200 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
 201
 202 static const u8 IT87_REG_FAN[]          = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
 203 static const u8 IT87_REG_FAN_MIN[]      = { 0x10, 0x11, 0x12, 0x84, 0x86 };
 204 static const u8 IT87_REG_FANX[]         = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
 205 static const u8 IT87_REG_FANX_MIN[]     = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
 206 static const u8 IT87_REG_TEMP_OFFSET[]  = { 0x56, 0x57, 0x59 };
 207
 208 #define IT87_REG_FAN_MAIN_CTRL 0x13
 209 #define IT87_REG_FAN_CTL       0x14
 210 #define IT87_REG_PWM(nr)       (0x15 + (nr))
 211 #define IT87_REG_PWM_DUTY(nr)  (0x63 + (nr) * 8)
 212
 213 #define IT87_REG_VIN(nr)       (0x20 + (nr))
 214 #define IT87_REG_TEMP(nr)      (0x29 + (nr))
 215
 216 #define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 217 #define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 218 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
 219 #define IT87_REG_TEMP_LOW(nr)  (0x41 + (nr) * 2)
 220
 221 #define IT87_REG_VIN_ENABLE    0x50
 222 #define IT87_REG_TEMP_ENABLE   0x51
 223 #define IT87_REG_TEMP_EXTRA    0x55
 224 #define IT87_REG_BEEP_ENABLE   0x5c
 225
 226 #define IT87_REG_CHIPID        0x58
 227
 228 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
 229 #define IT87_REG_AUTO_PWM(nr, i)  (0x65 + (nr) * 8 + (i))
 230
 231 struct it87_devices {
 232         const char *name;
 233         u16 features;
 234         u16 peci_mask;
 235 };
 236
 237 #define FEAT_12MV_ADC           (1 << 0)
 238 #define FEAT_NEWER_AUTOPWM      (1 << 1)
 239 #define FEAT_OLD_AUTOPWM        (1 << 2)
 240 #define FEAT_16BIT_FANS         (1 << 3)
 241 #define FEAT_TEMP_OFFSET        (1 << 4)
 242 #define FEAT_TEMP_PECI          (1 << 5)
 243
 244 static const struct it87_devices it87_devices[] = {
 245         [it87] = {
 246                 .name = "it87",
 247                 .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
 248         },
 249         [it8712] = {
 250                 .name = "it8712",
 251                 .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
 252         },
 253         [it8716] = {
 254                 .name = "it8716",
 255                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
 256         },
 257         [it8718] = {
 258                 .name = "it8718",
 259                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
 260         },
 261         [it8720] = {
 262                 .name = "it8720",
 263                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
 264         },
 265         [it8721] = {
 266                 .name = "it8721",
 267                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 268                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 269                 .peci_mask = 0x05,
 270         },
 271         [it8728] = {
 272                 .name = "it8728",
 273                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 274                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 275                 .peci_mask = 0x07,
 276         },
 277         [it8782] = {
 278                 .name = "it8782",
 279                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
 280         },
 281         [it8783] = {
 282                 .name = "it8783",
 283                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
 284         },
 285 };
 286
 287 #define has_16bit_fans(data)    ((data)->features & FEAT_16BIT_FANS)
 288 #define has_12mv_adc(data)      ((data)->features & FEAT_12MV_ADC)
 289 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
 290 #define has_old_autopwm(data)   ((data)->features & FEAT_OLD_AUTOPWM)
 291 #define has_temp_offset(data)   ((data)->features & FEAT_TEMP_OFFSET)
 292 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
 293                                  ((data)->peci_mask & (1 << nr)))
 294
 295 struct it87_sio_data {
 296         enum chips type;
 297         /* Values read from Super-I/O config space */
 298         u8 revision;
 299         u8 vid_value;
 300         u8 beep_pin;
 301         u8 internal;    /* Internal sensors can be labeled */
 302         /* Features skipped based on config or DMI */
 303         u16 skip_in;
 304         u8 skip_vid;
 305         u8 skip_fan;
 306         u8 skip_pwm;
 307         u8 skip_temp;
 308 };
 309
 310 /*
 311  * For each registered chip, we need to keep some data in memory.
 312  * The structure is dynamically allocated.
 313  */
 314 struct it87_data {
 315         struct device *hwmon_dev;
 316         enum chips type;
 317         u16 features;
 318         u16 peci_mask;
 319
 320         unsigned short addr;
 321         const char *name;
 322         struct mutex update_lock;
 323         char valid;             /* !=0 if following fields are valid */
 324         unsigned long last_updated;     /* In jiffies */
 325
 326         u16 in_scaled;          /* Internal voltage sensors are scaled */
 327         u8 in[9][3];            /* [nr][0]=in, [1]=min, [2]=max */
 328         u8 has_fan;             /* Bitfield, fans enabled */
 329         u16 fan[5][2];          /* Register values, [nr][0]=fan, [1]=min */
 330         u8 has_temp;            /* Bitfield, temp sensors enabled */
 331         s8 temp[3][4];          /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 332         u8 sensor;              /* Register value */
 333         u8 fan_div[3];          /* Register encoding, shifted right */
 334         u8 vid;                 /* Register encoding, combined */
 335         u8 vrm;
 336         u32 alarms;             /* Register encoding, combined */
 337         u8 beeps;               /* Register encoding */
 338         u8 fan_main_ctrl;       /* Register value */
 339         u8 fan_ctl;             /* Register value */
 340
 341         /*
 342          * The following 3 arrays correspond to the same registers up to
 343          * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 344          * 7, and we want to preserve settings on mode changes, so we have
 345          * to track all values separately.
 346          * Starting with the IT8721F, the manual PWM duty cycles are stored
 347          * in separate registers (8-bit values), so the separate tracking
 348          * is no longer needed, but it is still done to keep the driver
 349          * simple.
 350          */
 351         u8 pwm_ctrl[3];         /* Register value */
 352         u8 pwm_duty[3];         /* Manual PWM value set by user */
 353         u8 pwm_temp_map[3];     /* PWM to temp. chan. mapping (bits 1-0) */
 354
 355         /* Automatic fan speed control registers */
 356         u8 auto_pwm[3][4];      /* [nr][3] is hard-coded */
 357         s8 auto_temp[3][5];     /* [nr][0] is point1_temp_hyst */
 358 };
 359
 360 static int adc_lsb(const struct it87_data *data, int nr)
 361 {
 362         int lsb = has_12mv_adc(data) ? 12 : 16;
 363         if (data->in_scaled & (1 << nr))
 364                 lsb <<= 1;
 365         return lsb;
 366 }
 367
 368 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 369 {
 370         val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
 371         return SENSORS_LIMIT(val, 0, 255);
 372 }
 373
 374 static int in_from_reg(const struct it87_data *data, int nr, int val)
 375 {
 376         return val * adc_lsb(data, nr);
 377 }
 378
 379 static inline u8 FAN_TO_REG(long rpm, int div)
 380 {
 381         if (rpm == 0)
 382                 return 255;
 383         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 384         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
 385                              254);
 386 }
 387
 388 static inline u16 FAN16_TO_REG(long rpm)
 389 {
 390         if (rpm == 0)
 391                 return 0xffff;
 392         return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 393 }
 394
 395 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 396                                 1350000 / ((val) * (div)))
 397 /* The divider is fixed to 2 in 16-bit mode */
 398 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 399                              1350000 / ((val) * 2))
 400
 401 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
 402                                         ((val) + 500) / 1000), -128, 127))
 403 #define TEMP_FROM_REG(val) ((val) * 1000)
 404
 405 static u8 pwm_to_reg(const struct it87_data *data, long val)
 406 {
 407         if (has_newer_autopwm(data))
 408                 return val;
 409         else
 410                 return val >> 1;
 411 }
 412
 413 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 414 {
 415         if (has_newer_autopwm(data))
 416                 return reg;
 417         else
 418                 return (reg & 0x7f) << 1;
 419 }
 420
 421
 422 static int DIV_TO_REG(int val)
 423 {
 424         int answer = 0;
 425         while (answer < 7 && (val >>= 1))
 426                 answer++;
 427         return answer;
 428 }
 429 #define DIV_FROM_REG(val) (1 << (val))
 430
 431 static const unsigned int pwm_freq[8] = {
 432         48000000 / 128,
 433         24000000 / 128,
 434         12000000 / 128,
 435         8000000 / 128,
 436         6000000 / 128,
 437         3000000 / 128,
 438         1500000 / 128,
 439         750000 / 128,
 440 };
 441
 442 static int it87_probe(struct platform_device *pdev);
 443 static int it87_remove(struct platform_device *pdev);
 444
 445 static int it87_read_value(struct it87_data *data, u8 reg);
 446 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
 447 static struct it87_data *it87_update_device(struct device *dev);
 448 static int it87_check_pwm(struct device *dev);
 449 static void it87_init_device(struct platform_device *pdev);
 450
 451
 452 static struct platform_driver it87_driver = {
 453         .driver = {
 454                 .owner  = THIS_MODULE,
 455                 .name   = DRVNAME,
 456         },
 457         .probe  = it87_probe,
 458         .remove = it87_remove,
 459 };
 460
 461 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 462                        char *buf)
 463 {
 464         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 465         int nr = sattr->nr;
 466         int index = sattr->index;
 467
 468         struct it87_data *data = it87_update_device(dev);
 469         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 470 }
 471
 472 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
 473                       const char *buf, size_t count)
 474 {
 475         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 476         int nr = sattr->nr;
 477         int index = sattr->index;
 478
 479         struct it87_data *data = dev_get_drvdata(dev);
 480         unsigned long val;
 481
 482         if (kstrtoul(buf, 10, &val) < 0)
 483                 return -EINVAL;
 484
 485         mutex_lock(&data->update_lock);
 486         data->in[nr][index] = in_to_reg(data, nr, val);
 487         it87_write_value(data,
 488                          index == 1 ? IT87_REG_VIN_MIN(nr)
 489                                     : IT87_REG_VIN_MAX(nr),
 490                          data->in[nr][index]);
 491         mutex_unlock(&data->update_lock);
 492         return count;
 493 }
 494
 495 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 496 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 497                             0, 1);
 498 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 499                             0, 2);
 500
 501 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 502 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 503                             1, 1);
 504 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 505                             1, 2);
 506
 507 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 508 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 509                             2, 1);
 510 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 511                             2, 2);
 512
 513 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 514 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 515                             3, 1);
 516 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 517                             3, 2);
 518
 519 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 520 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 521                             4, 1);
 522 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 523                             4, 2);
 524
 525 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 526 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 527                             5, 1);
 528 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 529                             5, 2);
 530
 531 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 532 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 533                             6, 1);
 534 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 535                             6, 2);
 536
 537 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 538 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 539                             7, 1);
 540 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 541                             7, 2);
 542
 543 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 544
 545 /* 3 temperatures */
 546 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 547                          char *buf)
 548 {
 549         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 550         int nr = sattr->nr;
 551         int index = sattr->index;
 552         struct it87_data *data = it87_update_device(dev);
 553
 554         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 555 }
 556
 557 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 558                         const char *buf, size_t count)
 559 {
 560         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 561         int nr = sattr->nr;
 562         int index = sattr->index;
 563         struct it87_data *data = dev_get_drvdata(dev);
 564         long val;
 565         u8 reg, regval;
 566
 567         if (kstrtol(buf, 10, &val) < 0)
 568                 return -EINVAL;
 569
 570         mutex_lock(&data->update_lock);
 571
 572         switch (index) {
 573         default:
 574         case 1:
 575                 reg = IT87_REG_TEMP_LOW(nr);
 576                 break;
 577         case 2:
 578                 reg = IT87_REG_TEMP_HIGH(nr);
 579                 break;
 580         case 3:
 581                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 582                 if (!(regval & 0x80)) {
 583                         regval |= 0x80;
 584                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 585                 }
 586                 data->valid = 0;
 587                 reg = IT87_REG_TEMP_OFFSET[nr];
 588                 break;
 589         }
 590
 591         data->temp[nr][index] = TEMP_TO_REG(val);
 592         it87_write_value(data, reg, data->temp[nr][index]);
 593         mutex_unlock(&data->update_lock);
 594         return count;
 595 }
 596
 597 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
 598 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 599                             0, 1);
 600 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 601                             0, 2);
 602 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
 603                             set_temp, 0, 3);
 604 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
 605 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 606                             1, 1);
 607 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 608                             1, 2);
 609 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
 610                             set_temp, 1, 3);
 611 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
 612 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 613                             2, 1);
 614 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 615                             2, 2);
 616 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
 617                             set_temp, 2, 3);
 618
 619 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
 620                               char *buf)
 621 {
 622         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 623         int nr = sensor_attr->index;
 624         struct it87_data *data = it87_update_device(dev);
 625         u8 reg = data->sensor;      /* In case value is updated while used */
 626
 627         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
 628                 return sprintf(buf, "6\n");  /* Intel PECI */
 629         if (reg & (1 << nr))
 630                 return sprintf(buf, "3\n");  /* thermal diode */
 631         if (reg & (8 << nr))
 632                 return sprintf(buf, "4\n");  /* thermistor */
 633         return sprintf(buf, "0\n");      /* disabled */
 634 }
 635
 636 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
 637                              const char *buf, size_t count)
 638 {
 639         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 640         int nr = sensor_attr->index;
 641
 642         struct it87_data *data = dev_get_drvdata(dev);
 643         long val;
 644         u8 reg;
 645
 646         if (kstrtol(buf, 10, &val) < 0)
 647                 return -EINVAL;
 648
 649         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 650         reg &= ~(1 << nr);
 651         reg &= ~(8 << nr);
 652         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
 653                 reg &= 0x3f;
 654         if (val == 2) { /* backwards compatibility */
 655                 dev_warn(dev,
 656                          "Sensor type 2 is deprecated, please use 4 instead\n");
 657                 val = 4;
 658         }
 659         /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
 660         if (val == 3)
 661                 reg |= 1 << nr;
 662         else if (val == 4)
 663                 reg |= 8 << nr;
 664         else if (has_temp_peci(data, nr) && val == 6)
 665                 reg |= (nr + 1) << 6;
 666         else if (val != 0)
 667                 return -EINVAL;
 668
 669         mutex_lock(&data->update_lock);
 670         data->sensor = reg;
 671         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
 672         data->valid = 0;        /* Force cache refresh */
 673         mutex_unlock(&data->update_lock);
 674         return count;
 675 }
 676
 677 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
 678                           set_temp_type, 0);
 679 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
 680                           set_temp_type, 1);
 681 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
 682                           set_temp_type, 2);
 683
 684 /* 3 Fans */
 685
 686 static int pwm_mode(const struct it87_data *data, int nr)
 687 {
 688         int ctrl = data->fan_main_ctrl & (1 << nr);
 689
 690         if (ctrl == 0)                                  /* Full speed */
 691                 return 0;
 692         if (data->pwm_ctrl[nr] & 0x80)                  /* Automatic mode */
 693                 return 2;
 694         else                                            /* Manual mode */
 695                 return 1;
 696 }
 697
 698 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 699                         char *buf)
 700 {
 701         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 702         int nr = sattr->nr;
 703         int index = sattr->index;
 704         int speed;
 705         struct it87_data *data = it87_update_device(dev);
 706
 707         speed = has_16bit_fans(data) ?
 708                 FAN16_FROM_REG(data->fan[nr][index]) :
 709                 FAN_FROM_REG(data->fan[nr][index],
 710                              DIV_FROM_REG(data->fan_div[nr]));
 711         return sprintf(buf, "%d\n", speed);
 712 }
 713
 714 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 715                 char *buf)
 716 {
 717         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 718         int nr = sensor_attr->index;
 719
 720         struct it87_data *data = it87_update_device(dev);
 721         return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
 722 }
 723 static ssize_t show_pwm_enable(struct device *dev,
 724                 struct device_attribute *attr, char *buf)
 725 {
 726         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 727         int nr = sensor_attr->index;
 728
 729         struct it87_data *data = it87_update_device(dev);
 730         return sprintf(buf, "%d\n", pwm_mode(data, nr));
 731 }
 732 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 733                 char *buf)
 734 {
 735         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 736         int nr = sensor_attr->index;
 737
 738         struct it87_data *data = it87_update_device(dev);
 739         return sprintf(buf, "%d\n",
 740                        pwm_from_reg(data, data->pwm_duty[nr]));
 741 }
 742 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
 743                 char *buf)
 744 {
 745         struct it87_data *data = it87_update_device(dev);
 746         int index = (data->fan_ctl >> 4) & 0x07;
 747
 748         return sprintf(buf, "%u\n", pwm_freq[index]);
 749 }
 750
 751 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 752                        const char *buf, size_t count)
 753 {
 754         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 755         int nr = sattr->nr;
 756         int index = sattr->index;
 757
 758         struct it87_data *data = dev_get_drvdata(dev);
 759         long val;
 760         u8 reg;
 761
 762         if (kstrtol(buf, 10, &val) < 0)
 763                 return -EINVAL;
 764
 765         mutex_lock(&data->update_lock);
 766
 767         if (has_16bit_fans(data)) {
 768                 data->fan[nr][index] = FAN16_TO_REG(val);
 769                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 770                                  data->fan[nr][index] & 0xff);
 771                 it87_write_value(data, IT87_REG_FANX_MIN[nr],
 772                                  data->fan[nr][index] >> 8);
 773         } else {
 774                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
 775                 switch (nr) {
 776                 case 0:
 777                         data->fan_div[nr] = reg & 0x07;
 778                         break;
 779                 case 1:
 780                         data->fan_div[nr] = (reg >> 3) & 0x07;
 781                         break;
 782                 case 2:
 783                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
 784                         break;
 785                 }
 786                 data->fan[nr][index] =
 787                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 788                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 789                                  data->fan[nr][index]);
 790         }
 791
 792         mutex_unlock(&data->update_lock);
 793         return count;
 794 }
 795
 796 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 797                 const char *buf, size_t count)
 798 {
 799         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 800         int nr = sensor_attr->index;
 801
 802         struct it87_data *data = dev_get_drvdata(dev);
 803         unsigned long val;
 804         int min;
 805         u8 old;
 806
 807         if (kstrtoul(buf, 10, &val) < 0)
 808                 return -EINVAL;
 809
 810         mutex_lock(&data->update_lock);
 811         old = it87_read_value(data, IT87_REG_FAN_DIV);
 812
 813         /* Save fan min limit */
 814         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
 815
 816         switch (nr) {
 817         case 0:
 818         case 1:
 819                 data->fan_div[nr] = DIV_TO_REG(val);
 820                 break;
 821         case 2:
 822                 if (val < 8)
 823                         data->fan_div[nr] = 1;
 824                 else
 825                         data->fan_div[nr] = 3;
 826         }
 827         val = old & 0x80;
 828         val |= (data->fan_div[0] & 0x07);
 829         val |= (data->fan_div[1] & 0x07) << 3;
 830         if (data->fan_div[2] == 3)
 831                 val |= 0x1 << 6;
 832         it87_write_value(data, IT87_REG_FAN_DIV, val);
 833
 834         /* Restore fan min limit */
 835         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 836         it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
 837
 838         mutex_unlock(&data->update_lock);
 839         return count;
 840 }
 841
 842 /* Returns 0 if OK, -EINVAL otherwise */
 843 static int check_trip_points(struct device *dev, int nr)
 844 {
 845         const struct it87_data *data = dev_get_drvdata(dev);
 846         int i, err = 0;
 847
 848         if (has_old_autopwm(data)) {
 849                 for (i = 0; i < 3; i++) {
 850                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
 851                                 err = -EINVAL;
 852                 }
 853                 for (i = 0; i < 2; i++) {
 854                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
 855                                 err = -EINVAL;
 856                 }
 857         }
 858
 859         if (err) {
 860                 dev_err(dev,
 861                         "Inconsistent trip points, not switching to automatic mode\n");
 862                 dev_err(dev, "Adjust the trip points and try again\n");
 863         }
 864         return err;
 865 }
 866
 867 static ssize_t set_pwm_enable(struct device *dev,
 868                 struct device_attribute *attr, const char *buf, size_t count)
 869 {
 870         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 871         int nr = sensor_attr->index;
 872
 873         struct it87_data *data = dev_get_drvdata(dev);
 874         long val;
 875
 876         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
 877                 return -EINVAL;
 878
 879         /* Check trip points before switching to automatic mode */
 880         if (val == 2) {
 881                 if (check_trip_points(dev, nr) < 0)
 882                         return -EINVAL;
 883         }
 884
 885         mutex_lock(&data->update_lock);
 886
 887         if (val == 0) {
 888                 int tmp;
 889                 /* make sure the fan is on when in on/off mode */
 890                 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
 891                 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
 892                 /* set on/off mode */
 893                 data->fan_main_ctrl &= ~(1 << nr);
 894                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 895                                  data->fan_main_ctrl);
 896         } else {
 897                 if (val == 1)                           /* Manual mode */
 898                         data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
 899                                              data->pwm_temp_map[nr] :
 900                                              data->pwm_duty[nr];
 901                 else                                    /* Automatic mode */
 902                         data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
 903                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
 904                 /* set SmartGuardian mode */
 905                 data->fan_main_ctrl |= (1 << nr);
 906                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 907                                  data->fan_main_ctrl);
 908         }
 909
 910         mutex_unlock(&data->update_lock);
 911         return count;
 912 }
 913 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 914                 const char *buf, size_t count)
 915 {
 916         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 917         int nr = sensor_attr->index;
 918
 919         struct it87_data *data = dev_get_drvdata(dev);
 920         long val;
 921
 922         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
 923                 return -EINVAL;
 924
 925         mutex_lock(&data->update_lock);
 926         if (has_newer_autopwm(data)) {
 927                 /*
 928                  * If we are in automatic mode, the PWM duty cycle register
 929                  * is read-only so we can't write the value.
 930                  */
 931                 if (data->pwm_ctrl[nr] & 0x80) {
 932                         mutex_unlock(&data->update_lock);
 933                         return -EBUSY;
 934                 }
 935                 data->pwm_duty[nr] = pwm_to_reg(data, val);
 936                 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
 937                                  data->pwm_duty[nr]);
 938         } else {
 939                 data->pwm_duty[nr] = pwm_to_reg(data, val);
 940                 /*
 941                  * If we are in manual mode, write the duty cycle immediately;
 942                  * otherwise, just store it for later use.
 943                  */
 944                 if (!(data->pwm_ctrl[nr] & 0x80)) {
 945                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
 946                         it87_write_value(data, IT87_REG_PWM(nr),
 947                                          data->pwm_ctrl[nr]);
 948                 }
 949         }
 950         mutex_unlock(&data->update_lock);
 951         return count;
 952 }
 953 static ssize_t set_pwm_freq(struct device *dev,
 954                 struct device_attribute *attr, const char *buf, size_t count)
 955 {
 956         struct it87_data *data = dev_get_drvdata(dev);
 957         unsigned long val;
 958         int i;
 959
 960         if (kstrtoul(buf, 10, &val) < 0)
 961                 return -EINVAL;
 962
 963         /* Search for the nearest available frequency */
 964         for (i = 0; i < 7; i++) {
 965                 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
 966                         break;
 967         }
 968
 969         mutex_lock(&data->update_lock);
 970         data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
 971         data->fan_ctl |= i << 4;
 972         it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
 973         mutex_unlock(&data->update_lock);
 974
 975         return count;
 976 }
 977 static ssize_t show_pwm_temp_map(struct device *dev,
 978                 struct device_attribute *attr, char *buf)
 979 {
 980         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 981         int nr = sensor_attr->index;
 982
 983         struct it87_data *data = it87_update_device(dev);
 984         int map;
 985
 986         if (data->pwm_temp_map[nr] < 3)
 987                 map = 1 << data->pwm_temp_map[nr];
 988         else
 989                 map = 0;                        /* Should never happen */
 990         return sprintf(buf, "%d\n", map);
 991 }
 992 static ssize_t set_pwm_temp_map(struct device *dev,
 993                 struct device_attribute *attr, const char *buf, size_t count)
 994 {
 995         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 996         int nr = sensor_attr->index;
 997
 998         struct it87_data *data = dev_get_drvdata(dev);
 999         long val;
1000         u8 reg;
1001
1002         /*
1003          * This check can go away if we ever support automatic fan speed
1004          * control on newer chips.
1005          */
1006         if (!has_old_autopwm(data)) {
1007                 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1008                 return -EINVAL;
1009         }
1010
1011         if (kstrtol(buf, 10, &val) < 0)
1012                 return -EINVAL;
1013
1014         switch (val) {
1015         case (1 << 0):
1016                 reg = 0x00;
1017                 break;
1018         case (1 << 1):
1019                 reg = 0x01;
1020                 break;
1021         case (1 << 2):
1022                 reg = 0x02;
1023                 break;
1024         default:
1025                 return -EINVAL;
1026         }
1027
1028         mutex_lock(&data->update_lock);
1029         data->pwm_temp_map[nr] = reg;
1030         /*
1031          * If we are in automatic mode, write the temp mapping immediately;
1032          * otherwise, just store it for later use.
1033          */
1034         if (data->pwm_ctrl[nr] & 0x80) {
1035                 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1036                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1037         }
1038         mutex_unlock(&data->update_lock);
1039         return count;
1040 }
1041
1042 static ssize_t show_auto_pwm(struct device *dev,
1043                 struct device_attribute *attr, char *buf)
1044 {
1045         struct it87_data *data = it87_update_device(dev);
1046         struct sensor_device_attribute_2 *sensor_attr =
1047                         to_sensor_dev_attr_2(attr);
1048         int nr = sensor_attr->nr;
1049         int point = sensor_attr->index;
1050
1051         return sprintf(buf, "%d\n",
1052                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1053 }
1054
1055 static ssize_t set_auto_pwm(struct device *dev,
1056                 struct device_attribute *attr, const char *buf, size_t count)
1057 {
1058         struct it87_data *data = dev_get_drvdata(dev);
1059         struct sensor_device_attribute_2 *sensor_attr =
1060                         to_sensor_dev_attr_2(attr);
1061         int nr = sensor_attr->nr;
1062         int point = sensor_attr->index;
1063         long val;
1064
1065         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1066                 return -EINVAL;
1067
1068         mutex_lock(&data->update_lock);
1069         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1070         it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1071                          data->auto_pwm[nr][point]);
1072         mutex_unlock(&data->update_lock);
1073         return count;
1074 }
1075
1076 static ssize_t show_auto_temp(struct device *dev,
1077                 struct device_attribute *attr, char *buf)
1078 {
1079         struct it87_data *data = it87_update_device(dev);
1080         struct sensor_device_attribute_2 *sensor_attr =
1081                         to_sensor_dev_attr_2(attr);
1082         int nr = sensor_attr->nr;
1083         int point = sensor_attr->index;
1084
1085         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1086 }
1087
1088 static ssize_t set_auto_temp(struct device *dev,
1089                 struct device_attribute *attr, const char *buf, size_t count)
1090 {
1091         struct it87_data *data = dev_get_drvdata(dev);
1092         struct sensor_device_attribute_2 *sensor_attr =
1093                         to_sensor_dev_attr_2(attr);
1094         int nr = sensor_attr->nr;
1095         int point = sensor_attr->index;
1096         long val;
1097
1098         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1099                 return -EINVAL;
1100
1101         mutex_lock(&data->update_lock);
1102         data->auto_temp[nr][point] = TEMP_TO_REG(val);
1103         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1104                          data->auto_temp[nr][point]);
1105         mutex_unlock(&data->update_lock);
1106         return count;
1107 }
1108
1109 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1110 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1111                             0, 1);
1112 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1113                           set_fan_div, 0);
1114
1115 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1116 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1117                             1, 1);
1118 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1119                           set_fan_div, 1);
1120
1121 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1122 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1123                             2, 1);
1124 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1125                           set_fan_div, 2);
1126
1127 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1128 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1129                             3, 1);
1130
1131 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1132 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1133                             4, 1);
1134
1135 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1136                           show_pwm_enable, set_pwm_enable, 0);
1137 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1138 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1139 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1140                           show_pwm_temp_map, set_pwm_temp_map, 0);
1141 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1142                             show_auto_pwm, set_auto_pwm, 0, 0);
1143 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1144                             show_auto_pwm, set_auto_pwm, 0, 1);
1145 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1146                             show_auto_pwm, set_auto_pwm, 0, 2);
1147 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1148                             show_auto_pwm, NULL, 0, 3);
1149 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1150                             show_auto_temp, set_auto_temp, 0, 1);
1151 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1152                             show_auto_temp, set_auto_temp, 0, 0);
1153 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1154                             show_auto_temp, set_auto_temp, 0, 2);
1155 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1156                             show_auto_temp, set_auto_temp, 0, 3);
1157 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1158                             show_auto_temp, set_auto_temp, 0, 4);
1159
1160 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1161                           show_pwm_enable, set_pwm_enable, 1);
1162 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1163 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1164 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1165                           show_pwm_temp_map, set_pwm_temp_map, 1);
1166 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1167                             show_auto_pwm, set_auto_pwm, 1, 0);
1168 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1169                             show_auto_pwm, set_auto_pwm, 1, 1);
1170 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1171                             show_auto_pwm, set_auto_pwm, 1, 2);
1172 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1173                             show_auto_pwm, NULL, 1, 3);
1174 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1175                             show_auto_temp, set_auto_temp, 1, 1);
1176 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1177                             show_auto_temp, set_auto_temp, 1, 0);
1178 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1179                             show_auto_temp, set_auto_temp, 1, 2);
1180 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1181                             show_auto_temp, set_auto_temp, 1, 3);
1182 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1183                             show_auto_temp, set_auto_temp, 1, 4);
1184
1185 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1186                           show_pwm_enable, set_pwm_enable, 2);
1187 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1188 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1189 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1190                           show_pwm_temp_map, set_pwm_temp_map, 2);
1191 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1192                             show_auto_pwm, set_auto_pwm, 2, 0);
1193 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1194                             show_auto_pwm, set_auto_pwm, 2, 1);
1195 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1196                             show_auto_pwm, set_auto_pwm, 2, 2);
1197 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1198                             show_auto_pwm, NULL, 2, 3);
1199 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1200                             show_auto_temp, set_auto_temp, 2, 1);
1201 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1202                             show_auto_temp, set_auto_temp, 2, 0);
1203 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1204                             show_auto_temp, set_auto_temp, 2, 2);
1205 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1206                             show_auto_temp, set_auto_temp, 2, 3);
1207 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1208                             show_auto_temp, set_auto_temp, 2, 4);
1209
1210 /* Alarms */
1211 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1212                 char *buf)
1213 {
1214         struct it87_data *data = it87_update_device(dev);
1215         return sprintf(buf, "%u\n", data->alarms);
1216 }
1217 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1218
1219 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1220                 char *buf)
1221 {
1222         int bitnr = to_sensor_dev_attr(attr)->index;
1223         struct it87_data *data = it87_update_device(dev);
1224         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1225 }
1226
1227 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1228                 *attr, const char *buf, size_t count)
1229 {
1230         struct it87_data *data = dev_get_drvdata(dev);
1231         long val;
1232         int config;
1233
1234         if (kstrtol(buf, 10, &val) < 0 || val != 0)
1235                 return -EINVAL;
1236
1237         mutex_lock(&data->update_lock);
1238         config = it87_read_value(data, IT87_REG_CONFIG);
1239         if (config < 0) {
1240                 count = config;
1241         } else {
1242                 config |= 1 << 5;
1243                 it87_write_value(data, IT87_REG_CONFIG, config);
1244                 /* Invalidate cache to force re-read */
1245                 data->valid = 0;
1246         }
1247         mutex_unlock(&data->update_lock);
1248
1249         return count;
1250 }
1251
1252 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1253 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1254 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1255 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1256 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1257 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1258 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1259 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1260 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1261 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1262 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1263 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1264 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1265 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1266 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1267 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1268 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1269                           show_alarm, clear_intrusion, 4);
1270
1271 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1272                 char *buf)
1273 {
1274         int bitnr = to_sensor_dev_attr(attr)->index;
1275         struct it87_data *data = it87_update_device(dev);
1276         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1277 }
1278 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1279                 const char *buf, size_t count)
1280 {
1281         int bitnr = to_sensor_dev_attr(attr)->index;
1282         struct it87_data *data = dev_get_drvdata(dev);
1283         long val;
1284
1285         if (kstrtol(buf, 10, &val) < 0
1286          || (val != 0 && val != 1))
1287                 return -EINVAL;
1288
1289         mutex_lock(&data->update_lock);
1290         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1291         if (val)
1292                 data->beeps |= (1 << bitnr);
1293         else
1294                 data->beeps &= ~(1 << bitnr);
1295         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1296         mutex_unlock(&data->update_lock);
1297         return count;
1298 }
1299
1300 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1301                           show_beep, set_beep, 1);
1302 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1303 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1304 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1305 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1306 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1307 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1308 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1309 /* fanX_beep writability is set later */
1310 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1311 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1312 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1313 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1314 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1315 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1316                           show_beep, set_beep, 2);
1317 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1318 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1319
1320 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1321                 char *buf)
1322 {
1323         struct it87_data *data = dev_get_drvdata(dev);
1324         return sprintf(buf, "%u\n", data->vrm);
1325 }
1326 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1327                 const char *buf, size_t count)
1328 {
1329         struct it87_data *data = dev_get_drvdata(dev);
1330         unsigned long val;
1331
1332         if (kstrtoul(buf, 10, &val) < 0)
1333                 return -EINVAL;
1334
1335         data->vrm = val;
1336
1337         return count;
1338 }
1339 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1340
1341 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1342                 char *buf)
1343 {
1344         struct it87_data *data = it87_update_device(dev);
1345         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1346 }
1347 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1348
1349 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1350                 char *buf)
1351 {
1352         static const char * const labels[] = {
1353                 "+5V",
1354                 "5VSB",
1355                 "Vbat",
1356         };
1357         static const char * const labels_it8721[] = {
1358                 "+3.3V",
1359                 "3VSB",
1360                 "Vbat",
1361         };
1362         struct it87_data *data = dev_get_drvdata(dev);
1363         int nr = to_sensor_dev_attr(attr)->index;
1364
1365         return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1366                                                        : labels[nr]);
1367 }
1368 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1369 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1370 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1371
1372 static ssize_t show_name(struct device *dev, struct device_attribute
1373                          *devattr, char *buf)
1374 {
1375         struct it87_data *data = dev_get_drvdata(dev);
1376         return sprintf(buf, "%s\n", data->name);
1377 }
1378 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1379
1380 static struct attribute *it87_attributes_in[9][5] = {
1381 {
1382         &sensor_dev_attr_in0_input.dev_attr.attr,
1383         &sensor_dev_attr_in0_min.dev_attr.attr,
1384         &sensor_dev_attr_in0_max.dev_attr.attr,
1385         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1386         NULL
1387 }, {
1388         &sensor_dev_attr_in1_input.dev_attr.attr,
1389         &sensor_dev_attr_in1_min.dev_attr.attr,
1390         &sensor_dev_attr_in1_max.dev_attr.attr,
1391         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1392         NULL
1393 }, {
1394         &sensor_dev_attr_in2_input.dev_attr.attr,
1395         &sensor_dev_attr_in2_min.dev_attr.attr,
1396         &sensor_dev_attr_in2_max.dev_attr.attr,
1397         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1398         NULL
1399 }, {
1400         &sensor_dev_attr_in3_input.dev_attr.attr,
1401         &sensor_dev_attr_in3_min.dev_attr.attr,
1402         &sensor_dev_attr_in3_max.dev_attr.attr,
1403         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1404         NULL
1405 }, {
1406         &sensor_dev_attr_in4_input.dev_attr.attr,
1407         &sensor_dev_attr_in4_min.dev_attr.attr,
1408         &sensor_dev_attr_in4_max.dev_attr.attr,
1409         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1410         NULL
1411 }, {
1412         &sensor_dev_attr_in5_input.dev_attr.attr,
1413         &sensor_dev_attr_in5_min.dev_attr.attr,
1414         &sensor_dev_attr_in5_max.dev_attr.attr,
1415         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1416         NULL
1417 }, {
1418         &sensor_dev_attr_in6_input.dev_attr.attr,
1419         &sensor_dev_attr_in6_min.dev_attr.attr,
1420         &sensor_dev_attr_in6_max.dev_attr.attr,
1421         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1422         NULL
1423 }, {
1424         &sensor_dev_attr_in7_input.dev_attr.attr,
1425         &sensor_dev_attr_in7_min.dev_attr.attr,
1426         &sensor_dev_attr_in7_max.dev_attr.attr,
1427         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1428         NULL
1429 }, {
1430         &sensor_dev_attr_in8_input.dev_attr.attr,
1431         NULL
1432 } };
1433
1434 static const struct attribute_group it87_group_in[9] = {
1435         { .attrs = it87_attributes_in[0] },
1436         { .attrs = it87_attributes_in[1] },
1437         { .attrs = it87_attributes_in[2] },
1438         { .attrs = it87_attributes_in[3] },
1439         { .attrs = it87_attributes_in[4] },
1440         { .attrs = it87_attributes_in[5] },
1441         { .attrs = it87_attributes_in[6] },
1442         { .attrs = it87_attributes_in[7] },
1443         { .attrs = it87_attributes_in[8] },
1444 };
1445
1446 static struct attribute *it87_attributes_temp[3][6] = {
1447 {
1448         &sensor_dev_attr_temp1_input.dev_attr.attr,
1449         &sensor_dev_attr_temp1_max.dev_attr.attr,
1450         &sensor_dev_attr_temp1_min.dev_attr.attr,
1451         &sensor_dev_attr_temp1_type.dev_attr.attr,
1452         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1453         NULL
1454 } , {
1455         &sensor_dev_attr_temp2_input.dev_attr.attr,
1456         &sensor_dev_attr_temp2_max.dev_attr.attr,
1457         &sensor_dev_attr_temp2_min.dev_attr.attr,
1458         &sensor_dev_attr_temp2_type.dev_attr.attr,
1459         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1460         NULL
1461 } , {
1462         &sensor_dev_attr_temp3_input.dev_attr.attr,
1463         &sensor_dev_attr_temp3_max.dev_attr.attr,
1464         &sensor_dev_attr_temp3_min.dev_attr.attr,
1465         &sensor_dev_attr_temp3_type.dev_attr.attr,
1466         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1467         NULL
1468 } };
1469
1470 static const struct attribute_group it87_group_temp[3] = {
1471         { .attrs = it87_attributes_temp[0] },
1472         { .attrs = it87_attributes_temp[1] },
1473         { .attrs = it87_attributes_temp[2] },
1474 };
1475
1476 static struct attribute *it87_attributes_temp_offset[] = {
1477         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1478         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1479         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1480 };
1481
1482 static struct attribute *it87_attributes[] = {
1483         &dev_attr_alarms.attr,
1484         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1485         &dev_attr_name.attr,
1486         NULL
1487 };
1488
1489 static const struct attribute_group it87_group = {
1490         .attrs = it87_attributes,
1491 };
1492
1493 static struct attribute *it87_attributes_in_beep[] = {
1494         &sensor_dev_attr_in0_beep.dev_attr.attr,
1495         &sensor_dev_attr_in1_beep.dev_attr.attr,
1496         &sensor_dev_attr_in2_beep.dev_attr.attr,
1497         &sensor_dev_attr_in3_beep.dev_attr.attr,
1498         &sensor_dev_attr_in4_beep.dev_attr.attr,
1499         &sensor_dev_attr_in5_beep.dev_attr.attr,
1500         &sensor_dev_attr_in6_beep.dev_attr.attr,
1501         &sensor_dev_attr_in7_beep.dev_attr.attr,
1502         NULL
1503 };
1504
1505 static struct attribute *it87_attributes_temp_beep[] = {
1506         &sensor_dev_attr_temp1_beep.dev_attr.attr,
1507         &sensor_dev_attr_temp2_beep.dev_attr.attr,
1508         &sensor_dev_attr_temp3_beep.dev_attr.attr,
1509 };
1510
1511 static struct attribute *it87_attributes_fan[5][3+1] = { {
1512         &sensor_dev_attr_fan1_input.dev_attr.attr,
1513         &sensor_dev_attr_fan1_min.dev_attr.attr,
1514         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1515         NULL
1516 }, {
1517         &sensor_dev_attr_fan2_input.dev_attr.attr,
1518         &sensor_dev_attr_fan2_min.dev_attr.attr,
1519         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1520         NULL
1521 }, {
1522         &sensor_dev_attr_fan3_input.dev_attr.attr,
1523         &sensor_dev_attr_fan3_min.dev_attr.attr,
1524         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1525         NULL
1526 }, {
1527         &sensor_dev_attr_fan4_input.dev_attr.attr,
1528         &sensor_dev_attr_fan4_min.dev_attr.attr,
1529         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1530         NULL
1531 }, {
1532         &sensor_dev_attr_fan5_input.dev_attr.attr,
1533         &sensor_dev_attr_fan5_min.dev_attr.attr,
1534         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1535         NULL
1536 } };
1537
1538 static const struct attribute_group it87_group_fan[5] = {
1539         { .attrs = it87_attributes_fan[0] },
1540         { .attrs = it87_attributes_fan[1] },
1541         { .attrs = it87_attributes_fan[2] },
1542         { .attrs = it87_attributes_fan[3] },
1543         { .attrs = it87_attributes_fan[4] },
1544 };
1545
1546 static const struct attribute *it87_attributes_fan_div[] = {
1547         &sensor_dev_attr_fan1_div.dev_attr.attr,
1548         &sensor_dev_attr_fan2_div.dev_attr.attr,
1549         &sensor_dev_attr_fan3_div.dev_attr.attr,
1550 };
1551
1552 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1553         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1554         &sensor_dev_attr_pwm1.dev_attr.attr,
1555         &dev_attr_pwm1_freq.attr,
1556         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1557         NULL
1558 }, {
1559         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1560         &sensor_dev_attr_pwm2.dev_attr.attr,
1561         &dev_attr_pwm2_freq.attr,
1562         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1563         NULL
1564 }, {
1565         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1566         &sensor_dev_attr_pwm3.dev_attr.attr,
1567         &dev_attr_pwm3_freq.attr,
1568         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1569         NULL
1570 } };
1571
1572 static const struct attribute_group it87_group_pwm[3] = {
1573         { .attrs = it87_attributes_pwm[0] },
1574         { .attrs = it87_attributes_pwm[1] },
1575         { .attrs = it87_attributes_pwm[2] },
1576 };
1577
1578 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1579         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1580         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1581         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1582         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1583         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1584         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1585         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1586         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1587         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1588         NULL
1589 }, {
1590         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1591         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1592         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1593         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1594         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1595         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1596         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1597         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1598         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1599         NULL
1600 }, {
1601         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1602         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1603         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1604         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1605         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1606         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1607         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1608         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1609         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1610         NULL
1611 } };
1612
1613 static const struct attribute_group it87_group_autopwm[3] = {
1614         { .attrs = it87_attributes_autopwm[0] },
1615         { .attrs = it87_attributes_autopwm[1] },
1616         { .attrs = it87_attributes_autopwm[2] },
1617 };
1618
1619 static struct attribute *it87_attributes_fan_beep[] = {
1620         &sensor_dev_attr_fan1_beep.dev_attr.attr,
1621         &sensor_dev_attr_fan2_beep.dev_attr.attr,
1622         &sensor_dev_attr_fan3_beep.dev_attr.attr,
1623         &sensor_dev_attr_fan4_beep.dev_attr.attr,
1624         &sensor_dev_attr_fan5_beep.dev_attr.attr,
1625 };
1626
1627 static struct attribute *it87_attributes_vid[] = {
1628         &dev_attr_vrm.attr,
1629         &dev_attr_cpu0_vid.attr,
1630         NULL
1631 };
1632
1633 static const struct attribute_group it87_group_vid = {
1634         .attrs = it87_attributes_vid,
1635 };
1636
1637 static struct attribute *it87_attributes_label[] = {
1638         &sensor_dev_attr_in3_label.dev_attr.attr,
1639         &sensor_dev_attr_in7_label.dev_attr.attr,
1640         &sensor_dev_attr_in8_label.dev_attr.attr,
1641         NULL
1642 };
1643
1644 static const struct attribute_group it87_group_label = {
1645         .attrs = it87_attributes_label,
1646 };
1647
1648 /* SuperIO detection - will change isa_address if a chip is found */
1649 static int __init it87_find(unsigned short *address,
1650         struct it87_sio_data *sio_data)
1651 {
1652         int err;
1653         u16 chip_type;
1654         const char *board_vendor, *board_name;
1655
1656         err = superio_enter();
1657         if (err)
1658                 return err;
1659
1660         err = -ENODEV;
1661         chip_type = force_id ? force_id : superio_inw(DEVID);
1662
1663         switch (chip_type) {
1664         case IT8705F_DEVID:
1665                 sio_data->type = it87;
1666                 break;
1667         case IT8712F_DEVID:
1668                 sio_data->type = it8712;
1669                 break;
1670         case IT8716F_DEVID:
1671         case IT8726F_DEVID:
1672                 sio_data->type = it8716;
1673                 break;
1674         case IT8718F_DEVID:
1675                 sio_data->type = it8718;
1676                 break;
1677         case IT8720F_DEVID:
1678                 sio_data->type = it8720;
1679                 break;
1680         case IT8721F_DEVID:
1681                 sio_data->type = it8721;
1682                 break;
1683         case IT8728F_DEVID:
1684                 sio_data->type = it8728;
1685                 break;
1686         case IT8782F_DEVID:
1687                 sio_data->type = it8782;
1688                 break;
1689         case IT8783E_DEVID:
1690                 sio_data->type = it8783;
1691                 break;
1692         case 0xffff:    /* No device at all */
1693                 goto exit;
1694         default:
1695                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1696                 goto exit;
1697         }
1698
1699         superio_select(PME);
1700         if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1701                 pr_info("Device not activated, skipping\n");
1702                 goto exit;
1703         }
1704
1705         *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1706         if (*address == 0) {
1707                 pr_info("Base address not set, skipping\n");
1708                 goto exit;
1709         }
1710
1711         err = 0;
1712         sio_data->revision = superio_inb(DEVREV) & 0x0f;
1713         pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1714                 chip_type, *address, sio_data->revision);
1715
1716         /* in8 (Vbat) is always internal */
1717         sio_data->internal = (1 << 2);
1718
1719         /* Read GPIO config and VID value from LDN 7 (GPIO) */
1720         if (sio_data->type == it87) {
1721                 /* The IT8705F doesn't have VID pins at all */
1722                 sio_data->skip_vid = 1;
1723
1724                 /* The IT8705F has a different LD number for GPIO */
1725                 superio_select(5);
1726                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1727         } else if (sio_data->type == it8783) {
1728                 int reg25, reg27, reg2A, reg2C, regEF;
1729
1730                 sio_data->skip_vid = 1; /* No VID */
1731
1732                 superio_select(GPIO);
1733
1734                 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1735                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1736                 reg2A = superio_inb(IT87_SIO_PINX1_REG);
1737                 reg2C = superio_inb(IT87_SIO_PINX2_REG);
1738                 regEF = superio_inb(IT87_SIO_SPI_REG);
1739
1740                 /* Check if fan3 is there or not */
1741                 if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
1742                         sio_data->skip_fan |= (1 << 2);
1743                 if ((reg25 & (1 << 4))
1744                     || (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
1745                         sio_data->skip_pwm |= (1 << 2);
1746
1747                 /* Check if fan2 is there or not */
1748                 if (reg27 & (1 << 7))
1749                         sio_data->skip_fan |= (1 << 1);
1750                 if (reg27 & (1 << 3))
1751                         sio_data->skip_pwm |= (1 << 1);
1752
1753                 /* VIN5 */
1754                 if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
1755                         sio_data->skip_in |= (1 << 5); /* No VIN5 */
1756
1757                 /* VIN6 */
1758                 if (reg27 & (1 << 1))
1759                         sio_data->skip_in |= (1 << 6); /* No VIN6 */
1760
1761                 /*
1762                  * VIN7
1763                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1764                  */
1765                 if (reg27 & (1 << 2)) {
1766                         /*
1767                          * The data sheet is a bit unclear regarding the
1768                          * internal voltage divider for VCCH5V. It says
1769                          * "This bit enables and switches VIN7 (pin 91) to the
1770                          * internal voltage divider for VCCH5V".
1771                          * This is different to other chips, where the internal
1772                          * voltage divider would connect VIN7 to an internal
1773                          * voltage source. Maybe that is the case here as well.
1774                          *
1775                          * Since we don't know for sure, re-route it if that is
1776                          * not the case, and ask the user to report if the
1777                          * resulting voltage is sane.
1778                          */
1779                         if (!(reg2C & (1 << 1))) {
1780                                 reg2C |= (1 << 1);
1781                                 superio_outb(IT87_SIO_PINX2_REG, reg2C);
1782                                 pr_notice("Routing internal VCCH5V to in7.\n");
1783                         }
1784                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1785                         pr_notice("Please report if it displays a reasonable voltage.\n");
1786                 }
1787
1788                 if (reg2C & (1 << 0))
1789                         sio_data->internal |= (1 << 0);
1790                 if (reg2C & (1 << 1))
1791                         sio_data->internal |= (1 << 1);
1792
1793                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1794
1795         } else {
1796                 int reg;
1797                 bool uart6;
1798
1799                 superio_select(GPIO);
1800
1801                 reg = superio_inb(IT87_SIO_GPIO3_REG);
1802                 if (sio_data->type == it8721 || sio_data->type == it8728 ||
1803                     sio_data->type == it8782) {
1804                         /*
1805                          * IT8721F/IT8758E, and IT8782F don't have VID pins
1806                          * at all, not sure about the IT8728F.
1807                          */
1808                         sio_data->skip_vid = 1;
1809                 } else {
1810                         /* We need at least 4 VID pins */
1811                         if (reg & 0x0f) {
1812                                 pr_info("VID is disabled (pins used for GPIO)\n");
1813                                 sio_data->skip_vid = 1;
1814                         }
1815                 }
1816
1817                 /* Check if fan3 is there or not */
1818                 if (reg & (1 << 6))
1819                         sio_data->skip_pwm |= (1 << 2);
1820                 if (reg & (1 << 7))
1821                         sio_data->skip_fan |= (1 << 2);
1822
1823                 /* Check if fan2 is there or not */
1824                 reg = superio_inb(IT87_SIO_GPIO5_REG);
1825                 if (reg & (1 << 1))
1826                         sio_data->skip_pwm |= (1 << 1);
1827                 if (reg & (1 << 2))
1828                         sio_data->skip_fan |= (1 << 1);
1829
1830                 if ((sio_data->type == it8718 || sio_data->type == it8720)
1831                  && !(sio_data->skip_vid))
1832                         sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1833
1834                 reg = superio_inb(IT87_SIO_PINX2_REG);
1835
1836                 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1837
1838                 /*
1839                  * The IT8720F has no VIN7 pin, so VCCH should always be
1840                  * routed internally to VIN7 with an internal divider.
1841                  * Curiously, there still is a configuration bit to control
1842                  * this, which means it can be set incorrectly. And even
1843                  * more curiously, many boards out there are improperly
1844                  * configured, even though the IT8720F datasheet claims
1845                  * that the internal routing of VCCH to VIN7 is the default
1846                  * setting. So we force the internal routing in this case.
1847                  *
1848                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1849                  * If UART6 is enabled, re-route VIN7 to the internal divider
1850                  * if that is not already the case.
1851                  */
1852                 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1853                         reg |= (1 << 1);
1854                         superio_outb(IT87_SIO_PINX2_REG, reg);
1855                         pr_notice("Routing internal VCCH to in7\n");
1856                 }
1857                 if (reg & (1 << 0))
1858                         sio_data->internal |= (1 << 0);
1859                 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1860                     sio_data->type == it8728)
1861                         sio_data->internal |= (1 << 1);
1862
1863                 /*
1864                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1865                  * While VIN7 can be routed to the internal voltage divider,
1866                  * VIN5 and VIN6 are not available if UART6 is enabled.
1867                  *
1868                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1869                  * is the temperature source. Since we can not read the
1870                  * temperature source here, skip_temp is preliminary.
1871                  */
1872                 if (uart6) {
1873                         sio_data->skip_in |= (1 << 5) | (1 << 6);
1874                         sio_data->skip_temp |= (1 << 2);
1875                 }
1876
1877                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1878         }
1879         if (sio_data->beep_pin)
1880                 pr_info("Beeping is supported\n");
1881
1882         /* Disable specific features based on DMI strings */
1883         board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1884         board_name = dmi_get_system_info(DMI_BOARD_NAME);
1885         if (board_vendor && board_name) {
1886                 if (strcmp(board_vendor, "nVIDIA") == 0
1887                  && strcmp(board_name, "FN68PT") == 0) {
1888                         /*
1889                          * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1890                          * connected to a fan, but to something else. One user
1891                          * has reported instant system power-off when changing
1892                          * the PWM2 duty cycle, so we disable it.
1893                          * I use the board name string as the trigger in case
1894                          * the same board is ever used in other systems.
1895                          */
1896                         pr_info("Disabling pwm2 due to hardware constraints\n");
1897                         sio_data->skip_pwm = (1 << 1);
1898                 }
1899         }
1900
1901 exit:
1902         superio_exit();
1903         return err;
1904 }
1905
1906 static void it87_remove_files(struct device *dev)
1907 {
1908         struct it87_data *data = platform_get_drvdata(pdev);
1909         struct it87_sio_data *sio_data = dev->platform_data;
1910         int i;
1911
1912         sysfs_remove_group(&dev->kobj, &it87_group);
1913         for (i = 0; i < 9; i++) {
1914                 if (sio_data->skip_in & (1 << i))
1915                         continue;
1916                 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
1917                 if (it87_attributes_in_beep[i])
1918                         sysfs_remove_file(&dev->kobj,
1919                                           it87_attributes_in_beep[i]);
1920         }
1921         for (i = 0; i < 3; i++) {
1922                 if (!(data->has_temp & (1 << i)))
1923                         continue;
1924                 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
1925                 if (has_temp_offset(data))
1926                         sysfs_remove_file(&dev->kobj,
1927                                           it87_attributes_temp_offset[i]);
1928                 if (sio_data->beep_pin)
1929                         sysfs_remove_file(&dev->kobj,
1930                                           it87_attributes_temp_beep[i]);
1931         }
1932         for (i = 0; i < 5; i++) {
1933                 if (!(data->has_fan & (1 << i)))
1934                         continue;
1935                 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
1936                 if (sio_data->beep_pin)
1937                         sysfs_remove_file(&dev->kobj,
1938                                           it87_attributes_fan_beep[i]);
1939                 if (i < 3 && !has_16bit_fans(data))
1940                         sysfs_remove_file(&dev->kobj,
1941                                           it87_attributes_fan_div[i]);
1942         }
1943         for (i = 0; i < 3; i++) {
1944                 if (sio_data->skip_pwm & (1 << 0))
1945                         continue;
1946                 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
1947                 if (has_old_autopwm(data))
1948                         sysfs_remove_group(&dev->kobj,
1949                                            &it87_group_autopwm[i]);
1950         }
1951         if (!sio_data->skip_vid)
1952                 sysfs_remove_group(&dev->kobj, &it87_group_vid);
1953         sysfs_remove_group(&dev->kobj, &it87_group_label);
1954 }
1955
1956 static int it87_probe(struct platform_device *pdev)
1957 {
1958         struct it87_data *data;
1959         struct resource *res;
1960         struct device *dev = &pdev->dev;
1961         struct it87_sio_data *sio_data = dev->platform_data;
1962         int err = 0, i;
1963         int enable_pwm_interface;
1964         int fan_beep_need_rw;
1965
1966         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1967         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
1968                                  DRVNAME)) {
1969                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1970                         (unsigned long)res->start,
1971                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
1972                 return -EBUSY;
1973         }
1974
1975         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
1976         if (!data)
1977                 return -ENOMEM;
1978
1979         data->addr = res->start;
1980         data->type = sio_data->type;
1981         data->features = it87_devices[sio_data->type].features;
1982         data->peci_mask = it87_devices[sio_data->type].peci_mask;
1983         data->name = it87_devices[sio_data->type].name;
1984         /*
1985          * IT8705F Datasheet 0.4.1, 3h == Version G.
1986          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
1987          * These are the first revisions with 16-bit tachometer support.
1988          */
1989         switch (data->type) {
1990         case it87:
1991                 if (sio_data->revision >= 0x03) {
1992                         data->features &= ~FEAT_OLD_AUTOPWM;
1993                         data->features |= FEAT_16BIT_FANS;
1994                 }
1995                 break;
1996         case it8712:
1997                 if (sio_data->revision >= 0x08) {
1998                         data->features &= ~FEAT_OLD_AUTOPWM;
1999                         data->features |= FEAT_16BIT_FANS;
2000                 }
2001                 break;
2002         default:
2003                 break;
2004         }
2005
2006         /* Now, we do the remaining detection. */
2007         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2008          || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2009                 return -ENODEV;
2010
2011         platform_set_drvdata(pdev, data);
2012
2013         mutex_init(&data->update_lock);
2014
2015         /* Check PWM configuration */
2016         enable_pwm_interface = it87_check_pwm(dev);
2017
2018         /* Starting with IT8721F, we handle scaling of internal voltages */
2019         if (has_12mv_adc(data)) {
2020                 if (sio_data->internal & (1 << 0))
2021                         data->in_scaled |= (1 << 3);    /* in3 is AVCC */
2022                 if (sio_data->internal & (1 << 1))
2023                         data->in_scaled |= (1 << 7);    /* in7 is VSB */
2024                 if (sio_data->internal & (1 << 2))
2025                         data->in_scaled |= (1 << 8);    /* in8 is Vbat */
2026         } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2027                 if (sio_data->internal & (1 << 0))
2028                         data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
2029                 if (sio_data->internal & (1 << 1))
2030                         data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
2031         }
2032
2033         data->has_temp = 0x07;
2034         if (sio_data->skip_temp & (1 << 2)) {
2035                 if (sio_data->type == it8782
2036                     && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2037                         data->has_temp &= ~(1 << 2);
2038         }
2039
2040         /* Initialize the IT87 chip */
2041         it87_init_device(pdev);
2042
2043         /* Register sysfs hooks */
2044         err = sysfs_create_group(&dev->kobj, &it87_group);
2045         if (err)
2046                 return err;
2047
2048         for (i = 0; i < 9; i++) {
2049                 if (sio_data->skip_in & (1 << i))
2050                         continue;
2051                 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2052                 if (err)
2053                         goto error;
2054                 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2055                         err = sysfs_create_file(&dev->kobj,
2056                                                 it87_attributes_in_beep[i]);
2057                         if (err)
2058                                 goto error;
2059                 }
2060         }
2061
2062         for (i = 0; i < 3; i++) {
2063                 if (!(data->has_temp & (1 << i)))
2064                         continue;
2065                 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2066                 if (err)
2067                         goto error;
2068                 if (has_temp_offset(data)) {
2069                         err = sysfs_create_file(&dev->kobj,
2070                                                 it87_attributes_temp_offset[i]);
2071                         if (err)
2072                                 goto error;
2073                 }
2074                 if (sio_data->beep_pin) {
2075                         err = sysfs_create_file(&dev->kobj,
2076                                                 it87_attributes_temp_beep[i]);
2077                         if (err)
2078                                 goto error;
2079                 }
2080         }
2081
2082         /* Do not create fan files for disabled fans */
2083         fan_beep_need_rw = 1;
2084         for (i = 0; i < 5; i++) {
2085                 if (!(data->has_fan & (1 << i)))
2086                         continue;
2087                 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2088                 if (err)
2089                         goto error;
2090
2091                 if (i < 3 && !has_16bit_fans(data)) {
2092                         err = sysfs_create_file(&dev->kobj,
2093                                                 it87_attributes_fan_div[i]);
2094                         if (err)
2095                                 goto error;
2096                 }
2097
2098                 if (sio_data->beep_pin) {
2099                         err = sysfs_create_file(&dev->kobj,
2100                                                 it87_attributes_fan_beep[i]);
2101                         if (err)
2102                                 goto error;
2103                         if (!fan_beep_need_rw)
2104                                 continue;
2105
2106                         /*
2107                          * As we have a single beep enable bit for all fans,
2108                          * only the first enabled fan has a writable attribute
2109                          * for it.
2110                          */
2111                         if (sysfs_chmod_file(&dev->kobj,
2112                                              it87_attributes_fan_beep[i],
2113                                              S_IRUGO | S_IWUSR))
2114                                 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2115                                         i + 1);
2116                         fan_beep_need_rw = 0;
2117                 }
2118         }
2119
2120         if (enable_pwm_interface) {
2121                 for (i = 0; i < 3; i++) {
2122                         if (sio_data->skip_pwm & (1 << i))
2123                                 continue;
2124                         err = sysfs_create_group(&dev->kobj,
2125                                                  &it87_group_pwm[i]);
2126                         if (err)
2127                                 goto error;
2128
2129                         if (!has_old_autopwm(data))
2130                                 continue;
2131                         err = sysfs_create_group(&dev->kobj,
2132                                                  &it87_group_autopwm[i]);
2133                         if (err)
2134                                 goto error;
2135                 }
2136         }
2137
2138         if (!sio_data->skip_vid) {
2139                 data->vrm = vid_which_vrm();
2140                 /* VID reading from Super-I/O config space if available */
2141                 data->vid = sio_data->vid_value;
2142                 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2143                 if (err)
2144                         goto error;
2145         }
2146
2147         /* Export labels for internal sensors */
2148         for (i = 0; i < 3; i++) {
2149                 if (!(sio_data->internal & (1 << i)))
2150                         continue;
2151                 err = sysfs_create_file(&dev->kobj,
2152                                         it87_attributes_label[i]);
2153                 if (err)
2154                         goto error;
2155         }
2156
2157         data->hwmon_dev = hwmon_device_register(dev);
2158         if (IS_ERR(data->hwmon_dev)) {
2159                 err = PTR_ERR(data->hwmon_dev);
2160                 goto error;
2161         }
2162
2163         return 0;
2164
2165 error:
2166         it87_remove_files(dev);
2167         return err;
2168 }
2169
2170 static int it87_remove(struct platform_device *pdev)
2171 {
2172         struct it87_data *data = platform_get_drvdata(pdev);
2173
2174         hwmon_device_unregister(data->hwmon_dev);
2175         it87_remove_files(&pdev->dev);
2176
2177         return 0;
2178 }
2179
2180 /*
2181  * Must be called with data->update_lock held, except during initialization.
2182  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2183  * would slow down the IT87 access and should not be necessary.
2184  */
2185 static int it87_read_value(struct it87_data *data, u8 reg)
2186 {
2187         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2188         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2189 }
2190
2191 /*
2192  * Must be called with data->update_lock held, except during initialization.
2193  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2194  * would slow down the IT87 access and should not be necessary.
2195  */
2196 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2197 {
2198         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2199         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2200 }
2201
2202 /* Return 1 if and only if the PWM interface is safe to use */
2203 static int it87_check_pwm(struct device *dev)
2204 {
2205         struct it87_data *data = dev_get_drvdata(dev);
2206         /*
2207          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2208          * and polarity set to active low is sign that this is the case so we
2209          * disable pwm control to protect the user.
2210          */
2211         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2212         if ((tmp & 0x87) == 0) {
2213                 if (fix_pwm_polarity) {
2214                         /*
2215                          * The user asks us to attempt a chip reconfiguration.
2216                          * This means switching to active high polarity and
2217                          * inverting all fan speed values.
2218                          */
2219                         int i;
2220                         u8 pwm[3];
2221
2222                         for (i = 0; i < 3; i++)
2223                                 pwm[i] = it87_read_value(data,
2224                                                          IT87_REG_PWM(i));
2225
2226                         /*
2227                          * If any fan is in automatic pwm mode, the polarity
2228                          * might be correct, as suspicious as it seems, so we
2229                          * better don't change anything (but still disable the
2230                          * PWM interface).
2231                          */
2232                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2233                                 dev_info(dev,
2234                                          "Reconfiguring PWM to active high polarity\n");
2235                                 it87_write_value(data, IT87_REG_FAN_CTL,
2236                                                  tmp | 0x87);
2237                                 for (i = 0; i < 3; i++)
2238                                         it87_write_value(data,
2239                                                          IT87_REG_PWM(i),
2240                                                          0x7f & ~pwm[i]);
2241                                 return 1;
2242                         }
2243
2244                         dev_info(dev,
2245                                  "PWM configuration is too broken to be fixed\n");
2246                 }
2247
2248                 dev_info(dev,
2249                          "Detected broken BIOS defaults, disabling PWM interface\n");
2250                 return 0;
2251         } else if (fix_pwm_polarity) {
2252                 dev_info(dev,
2253                          "PWM configuration looks sane, won't touch\n");
2254         }
2255
2256         return 1;
2257 }
2258
2259 /* Called when we have found a new IT87. */
2260 static void it87_init_device(struct platform_device *pdev)
2261 {
2262         struct it87_sio_data *sio_data = pdev->dev.platform_data;
2263         struct it87_data *data = platform_get_drvdata(pdev);
2264         int tmp, i;
2265         u8 mask;
2266
2267         /*
2268          * For each PWM channel:
2269          * - If it is in automatic mode, setting to manual mode should set
2270          *   the fan to full speed by default.
2271          * - If it is in manual mode, we need a mapping to temperature
2272          *   channels to use when later setting to automatic mode later.
2273          *   Use a 1:1 mapping by default (we are clueless.)
2274          * In both cases, the value can (and should) be changed by the user
2275          * prior to switching to a different mode.
2276          * Note that this is no longer needed for the IT8721F and later, as
2277          * these have separate registers for the temperature mapping and the
2278          * manual duty cycle.
2279          */
2280         for (i = 0; i < 3; i++) {
2281                 data->pwm_temp_map[i] = i;
2282                 data->pwm_duty[i] = 0x7f;       /* Full speed */
2283                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2284         }
2285
2286         /*
2287          * Some chips seem to have default value 0xff for all limit
2288          * registers. For low voltage limits it makes no sense and triggers
2289          * alarms, so change to 0 instead. For high temperature limits, it
2290          * means -1 degree C, which surprisingly doesn't trigger an alarm,
2291          * but is still confusing, so change to 127 degrees C.
2292          */
2293         for (i = 0; i < 8; i++) {
2294                 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2295                 if (tmp == 0xff)
2296                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2297         }
2298         for (i = 0; i < 3; i++) {
2299                 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2300                 if (tmp == 0xff)
2301                         it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2302         }
2303
2304         /*
2305          * Temperature channels are not forcibly enabled, as they can be
2306          * set to two different sensor types and we can't guess which one
2307          * is correct for a given system. These channels can be enabled at
2308          * run-time through the temp{1-3}_type sysfs accessors if needed.
2309          */
2310
2311         /* Check if voltage monitors are reset manually or by some reason */
2312         tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2313         if ((tmp & 0xff) == 0) {
2314                 /* Enable all voltage monitors */
2315                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2316         }
2317
2318         /* Check if tachometers are reset manually or by some reason */
2319         mask = 0x70 & ~(sio_data->skip_fan << 4);
2320         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2321         if ((data->fan_main_ctrl & mask) == 0) {
2322                 /* Enable all fan tachometers */
2323                 data->fan_main_ctrl |= mask;
2324                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2325                                  data->fan_main_ctrl);
2326         }
2327         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2328
2329         /* Set tachometers to 16-bit mode if needed */
2330         if (has_16bit_fans(data)) {
2331                 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2332                 if (~tmp & 0x07 & data->has_fan) {
2333                         dev_dbg(&pdev->dev,
2334                                 "Setting fan1-3 to 16-bit mode\n");
2335                         it87_write_value(data, IT87_REG_FAN_16BIT,
2336                                          tmp | 0x07);
2337                 }
2338                 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2339                 if (data->type != it87 && data->type != it8782 &&
2340                     data->type != it8783) {
2341                         if (tmp & (1 << 4))
2342                                 data->has_fan |= (1 << 3); /* fan4 enabled */
2343                         if (tmp & (1 << 5))
2344                                 data->has_fan |= (1 << 4); /* fan5 enabled */
2345                 }
2346         }
2347
2348         /* Fan input pins may be used for alternative functions */
2349         data->has_fan &= ~sio_data->skip_fan;
2350
2351         /* Start monitoring */
2352         it87_write_value(data, IT87_REG_CONFIG,
2353                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2354                          | (update_vbat ? 0x41 : 0x01));
2355 }
2356
2357 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2358 {
2359         data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2360         if (has_newer_autopwm(data)) {
2361                 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2362                 data->pwm_duty[nr] = it87_read_value(data,
2363                                                      IT87_REG_PWM_DUTY(nr));
2364         } else {
2365                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
2366                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2367                 else                            /* Manual mode */
2368                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2369         }
2370
2371         if (has_old_autopwm(data)) {
2372                 int i;
2373
2374                 for (i = 0; i < 5 ; i++)
2375                         data->auto_temp[nr][i] = it87_read_value(data,
2376                                                 IT87_REG_AUTO_TEMP(nr, i));
2377                 for (i = 0; i < 3 ; i++)
2378                         data->auto_pwm[nr][i] = it87_read_value(data,
2379                                                 IT87_REG_AUTO_PWM(nr, i));
2380         }
2381 }
2382
2383 static struct it87_data *it87_update_device(struct device *dev)
2384 {
2385         struct it87_data *data = dev_get_drvdata(dev);
2386         int i;
2387
2388         mutex_lock(&data->update_lock);
2389
2390         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2391             || !data->valid) {
2392                 if (update_vbat) {
2393                         /*
2394                          * Cleared after each update, so reenable.  Value
2395                          * returned by this read will be previous value
2396                          */
2397                         it87_write_value(data, IT87_REG_CONFIG,
2398                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2399                 }
2400                 for (i = 0; i <= 7; i++) {
2401                         data->in[i][0] =
2402                                 it87_read_value(data, IT87_REG_VIN(i));
2403                         data->in[i][1] =
2404                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
2405                         data->in[i][2] =
2406                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
2407                 }
2408                 /* in8 (battery) has no limit registers */
2409                 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2410
2411                 for (i = 0; i < 5; i++) {
2412                         /* Skip disabled fans */
2413                         if (!(data->has_fan & (1 << i)))
2414                                 continue;
2415
2416                         data->fan[i][1] =
2417                                 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2418                         data->fan[i][0] = it87_read_value(data,
2419                                        IT87_REG_FAN[i]);
2420                         /* Add high byte if in 16-bit mode */
2421                         if (has_16bit_fans(data)) {
2422                                 data->fan[i][0] |= it87_read_value(data,
2423                                                 IT87_REG_FANX[i]) << 8;
2424                                 data->fan[i][1] |= it87_read_value(data,
2425                                                 IT87_REG_FANX_MIN[i]) << 8;
2426                         }
2427                 }
2428                 for (i = 0; i < 3; i++) {
2429                         if (!(data->has_temp & (1 << i)))
2430                                 continue;
2431                         data->temp[i][0] =
2432                                 it87_read_value(data, IT87_REG_TEMP(i));
2433                         data->temp[i][1] =
2434                                 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2435                         data->temp[i][2] =
2436                                 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2437                         if (has_temp_offset(data))
2438                                 data->temp[i][3] =
2439                                   it87_read_value(data,
2440                                                   IT87_REG_TEMP_OFFSET[i]);
2441                 }
2442
2443                 /* Newer chips don't have clock dividers */
2444                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2445                         i = it87_read_value(data, IT87_REG_FAN_DIV);
2446                         data->fan_div[0] = i & 0x07;
2447                         data->fan_div[1] = (i >> 3) & 0x07;
2448                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
2449                 }
2450
2451                 data->alarms =
2452                         it87_read_value(data, IT87_REG_ALARM1) |
2453                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2454                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
2455                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2456
2457                 data->fan_main_ctrl = it87_read_value(data,
2458                                 IT87_REG_FAN_MAIN_CTRL);
2459                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2460                 for (i = 0; i < 3; i++)
2461                         it87_update_pwm_ctrl(data, i);
2462
2463                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2464                 /*
2465                  * The IT8705F does not have VID capability.
2466                  * The IT8718F and later don't use IT87_REG_VID for the
2467                  * same purpose.
2468                  */
2469                 if (data->type == it8712 || data->type == it8716) {
2470                         data->vid = it87_read_value(data, IT87_REG_VID);
2471                         /*
2472                          * The older IT8712F revisions had only 5 VID pins,
2473                          * but we assume it is always safe to read 6 bits.
2474                          */
2475                         data->vid &= 0x3f;
2476                 }
2477                 data->last_updated = jiffies;
2478                 data->valid = 1;
2479         }
2480
2481         mutex_unlock(&data->update_lock);
2482
2483         return data;
2484 }
2485
2486 static int __init it87_device_add(unsigned short address,
2487                                   const struct it87_sio_data *sio_data)
2488 {
2489         struct resource res = {
2490                 .start  = address + IT87_EC_OFFSET,
2491                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2492                 .name   = DRVNAME,
2493                 .flags  = IORESOURCE_IO,
2494         };
2495         int err;
2496
2497         err = acpi_check_resource_conflict(&res);
2498         if (err)
2499                 goto exit;
2500
2501         pdev = platform_device_alloc(DRVNAME, address);
2502         if (!pdev) {
2503                 err = -ENOMEM;
2504                 pr_err("Device allocation failed\n");
2505                 goto exit;
2506         }
2507
2508         err = platform_device_add_resources(pdev, &res, 1);
2509         if (err) {
2510                 pr_err("Device resource addition failed (%d)\n", err);
2511                 goto exit_device_put;
2512         }
2513
2514         err = platform_device_add_data(pdev, sio_data,
2515                                        sizeof(struct it87_sio_data));
2516         if (err) {
2517                 pr_err("Platform data allocation failed\n");
2518                 goto exit_device_put;
2519         }
2520
2521         err = platform_device_add(pdev);
2522         if (err) {
2523                 pr_err("Device addition failed (%d)\n", err);
2524                 goto exit_device_put;
2525         }
2526
2527         return 0;
2528
2529 exit_device_put:
2530         platform_device_put(pdev);
2531 exit:
2532         return err;
2533 }
2534
2535 static int __init sm_it87_init(void)
2536 {
2537         int err;
2538         unsigned short isa_address = 0;
2539         struct it87_sio_data sio_data;
2540
2541         memset(&sio_data, 0, sizeof(struct it87_sio_data));
2542         err = it87_find(&isa_address, &sio_data);
2543         if (err)
2544                 return err;
2545         err = platform_driver_register(&it87_driver);
2546         if (err)
2547                 return err;
2548
2549         err = it87_device_add(isa_address, &sio_data);
2550         if (err) {
2551                 platform_driver_unregister(&it87_driver);
2552                 return err;
2553         }
2554
2555         return 0;
2556 }
2557
2558 static void __exit sm_it87_exit(void)
2559 {
2560         platform_device_unregister(pdev);
2561         platform_driver_unregister(&it87_driver);
2562 }
2563
2564
2565 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>");
2566 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2567 module_param(update_vbat, bool, 0);
2568 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2569 module_param(fix_pwm_polarity, bool, 0);
2570 MODULE_PARM_DESC(fix_pwm_polarity,
2571                  "Force PWM polarity to active high (DANGEROUS)");
2572 MODULE_LICENSE("GPL");
2573
2574 module_init(sm_it87_init);
2575 module_exit(sm_it87_exit);