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