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         u8 peci_mask;
 235         u8 old_peci_mask;
 236 };
 237
 238 #define FEAT_12MV_ADC           (1 << 0)
 239 #define FEAT_NEWER_AUTOPWM      (1 << 1)
 240 #define FEAT_OLD_AUTOPWM        (1 << 2)
 241 #define FEAT_16BIT_FANS         (1 << 3)
 242 #define FEAT_TEMP_OFFSET        (1 << 4)
 243 #define FEAT_TEMP_PECI          (1 << 5)
 244 #define FEAT_TEMP_OLD_PECI      (1 << 6)
 245
 246 static const struct it87_devices it87_devices[] = {
 247         [it87] = {
 248                 .name = "it87",
 249                 .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
 250         },
 251         [it8712] = {
 252                 .name = "it8712",
 253                 .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
 254         },
 255         [it8716] = {
 256                 .name = "it8716",
 257                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET,
 258         },
 259         [it8718] = {
 260                 .name = "it8718",
 261                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 262                   | FEAT_TEMP_OLD_PECI,
 263                 .old_peci_mask = 0x4,
 264         },
 265         [it8720] = {
 266                 .name = "it8720",
 267                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 268                   | FEAT_TEMP_OLD_PECI,
 269                 .old_peci_mask = 0x4,
 270         },
 271         [it8721] = {
 272                 .name = "it8721",
 273                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 274                   | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI,
 275                 .peci_mask = 0x05,
 276                 .old_peci_mask = 0x02,  /* Actually reports PCH */
 277         },
 278         [it8728] = {
 279                 .name = "it8728",
 280                 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
 281                   | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
 282                 .peci_mask = 0x07,
 283         },
 284         [it8782] = {
 285                 .name = "it8782",
 286                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 287                   | FEAT_TEMP_OLD_PECI,
 288                 .old_peci_mask = 0x4,
 289         },
 290         [it8783] = {
 291                 .name = "it8783",
 292                 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
 293                   | FEAT_TEMP_OLD_PECI,
 294                 .old_peci_mask = 0x4,
 295         },
 296 };
 297
 298 #define has_16bit_fans(data)    ((data)->features & FEAT_16BIT_FANS)
 299 #define has_12mv_adc(data)      ((data)->features & FEAT_12MV_ADC)
 300 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
 301 #define has_old_autopwm(data)   ((data)->features & FEAT_OLD_AUTOPWM)
 302 #define has_temp_offset(data)   ((data)->features & FEAT_TEMP_OFFSET)
 303 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \
 304                                  ((data)->peci_mask & (1 << nr)))
 305 #define has_temp_old_peci(data, nr) \
 306                                 (((data)->features & FEAT_TEMP_OLD_PECI) && \
 307                                  ((data)->old_peci_mask & (1 << nr)))
 308
 309 struct it87_sio_data {
 310         enum chips type;
 311         /* Values read from Super-I/O config space */
 312         u8 revision;
 313         u8 vid_value;
 314         u8 beep_pin;
 315         u8 internal;    /* Internal sensors can be labeled */
 316         /* Features skipped based on config or DMI */
 317         u16 skip_in;
 318         u8 skip_vid;
 319         u8 skip_fan;
 320         u8 skip_pwm;
 321         u8 skip_temp;
 322 };
 323
 324 /*
 325  * For each registered chip, we need to keep some data in memory.
 326  * The structure is dynamically allocated.
 327  */
 328 struct it87_data {
 329         struct device *hwmon_dev;
 330         enum chips type;
 331         u16 features;
 332         u8 peci_mask;
 333         u8 old_peci_mask;
 334
 335         unsigned short addr;
 336         const char *name;
 337         struct mutex update_lock;
 338         char valid;             /* !=0 if following fields are valid */
 339         unsigned long last_updated;     /* In jiffies */
 340
 341         u16 in_scaled;          /* Internal voltage sensors are scaled */
 342         u8 in[9][3];            /* [nr][0]=in, [1]=min, [2]=max */
 343         u8 has_fan;             /* Bitfield, fans enabled */
 344         u16 fan[5][2];          /* Register values, [nr][0]=fan, [1]=min */
 345         u8 has_temp;            /* Bitfield, temp sensors enabled */
 346         s8 temp[3][4];          /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 347         u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
 348         u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
 349         u8 fan_div[3];          /* Register encoding, shifted right */
 350         u8 vid;                 /* Register encoding, combined */
 351         u8 vrm;
 352         u32 alarms;             /* Register encoding, combined */
 353         u8 beeps;               /* Register encoding */
 354         u8 fan_main_ctrl;       /* Register value */
 355         u8 fan_ctl;             /* Register value */
 356
 357         /*
 358          * The following 3 arrays correspond to the same registers up to
 359          * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 360          * 7, and we want to preserve settings on mode changes, so we have
 361          * to track all values separately.
 362          * Starting with the IT8721F, the manual PWM duty cycles are stored
 363          * in separate registers (8-bit values), so the separate tracking
 364          * is no longer needed, but it is still done to keep the driver
 365          * simple.
 366          */
 367         u8 pwm_ctrl[3];         /* Register value */
 368         u8 pwm_duty[3];         /* Manual PWM value set by user */
 369         u8 pwm_temp_map[3];     /* PWM to temp. chan. mapping (bits 1-0) */
 370
 371         /* Automatic fan speed control registers */
 372         u8 auto_pwm[3][4];      /* [nr][3] is hard-coded */
 373         s8 auto_temp[3][5];     /* [nr][0] is point1_temp_hyst */
 374 };
 375
 376 static int adc_lsb(const struct it87_data *data, int nr)
 377 {
 378         int lsb = has_12mv_adc(data) ? 12 : 16;
 379         if (data->in_scaled & (1 << nr))
 380                 lsb <<= 1;
 381         return lsb;
 382 }
 383
 384 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 385 {
 386         val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
 387         return clamp_val(val, 0, 255);
 388 }
 389
 390 static int in_from_reg(const struct it87_data *data, int nr, int val)
 391 {
 392         return val * adc_lsb(data, nr);
 393 }
 394
 395 static inline u8 FAN_TO_REG(long rpm, int div)
 396 {
 397         if (rpm == 0)
 398                 return 255;
 399         rpm = clamp_val(rpm, 1, 1000000);
 400         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 401 }
 402
 403 static inline u16 FAN16_TO_REG(long rpm)
 404 {
 405         if (rpm == 0)
 406                 return 0xffff;
 407         return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 408 }
 409
 410 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 411                                 1350000 / ((val) * (div)))
 412 /* The divider is fixed to 2 in 16-bit mode */
 413 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 414                              1350000 / ((val) * 2))
 415
 416 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \
 417                                     ((val) + 500) / 1000), -128, 127))
 418 #define TEMP_FROM_REG(val) ((val) * 1000)
 419
 420 static u8 pwm_to_reg(const struct it87_data *data, long val)
 421 {
 422         if (has_newer_autopwm(data))
 423                 return val;
 424         else
 425                 return val >> 1;
 426 }
 427
 428 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 429 {
 430         if (has_newer_autopwm(data))
 431                 return reg;
 432         else
 433                 return (reg & 0x7f) << 1;
 434 }
 435
 436
 437 static int DIV_TO_REG(int val)
 438 {
 439         int answer = 0;
 440         while (answer < 7 && (val >>= 1))
 441                 answer++;
 442         return answer;
 443 }
 444 #define DIV_FROM_REG(val) (1 << (val))
 445
 446 static const unsigned int pwm_freq[8] = {
 447         48000000 / 128,
 448         24000000 / 128,
 449         12000000 / 128,
 450         8000000 / 128,
 451         6000000 / 128,
 452         3000000 / 128,
 453         1500000 / 128,
 454         750000 / 128,
 455 };
 456
 457 static int it87_probe(struct platform_device *pdev);
 458 static int it87_remove(struct platform_device *pdev);
 459
 460 static int it87_read_value(struct it87_data *data, u8 reg);
 461 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
 462 static struct it87_data *it87_update_device(struct device *dev);
 463 static int it87_check_pwm(struct device *dev);
 464 static void it87_init_device(struct platform_device *pdev);
 465
 466
 467 static struct platform_driver it87_driver = {
 468         .driver = {
 469                 .owner  = THIS_MODULE,
 470                 .name   = DRVNAME,
 471         },
 472         .probe  = it87_probe,
 473         .remove = it87_remove,
 474 };
 475
 476 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 477                        char *buf)
 478 {
 479         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 480         int nr = sattr->nr;
 481         int index = sattr->index;
 482
 483         struct it87_data *data = it87_update_device(dev);
 484         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 485 }
 486
 487 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
 488                       const char *buf, size_t count)
 489 {
 490         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 491         int nr = sattr->nr;
 492         int index = sattr->index;
 493
 494         struct it87_data *data = dev_get_drvdata(dev);
 495         unsigned long val;
 496
 497         if (kstrtoul(buf, 10, &val) < 0)
 498                 return -EINVAL;
 499
 500         mutex_lock(&data->update_lock);
 501         data->in[nr][index] = in_to_reg(data, nr, val);
 502         it87_write_value(data,
 503                          index == 1 ? IT87_REG_VIN_MIN(nr)
 504                                     : IT87_REG_VIN_MAX(nr),
 505                          data->in[nr][index]);
 506         mutex_unlock(&data->update_lock);
 507         return count;
 508 }
 509
 510 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 511 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 512                             0, 1);
 513 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 514                             0, 2);
 515
 516 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 517 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 518                             1, 1);
 519 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 520                             1, 2);
 521
 522 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 523 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 524                             2, 1);
 525 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 526                             2, 2);
 527
 528 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 529 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 530                             3, 1);
 531 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 532                             3, 2);
 533
 534 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 535 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 536                             4, 1);
 537 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 538                             4, 2);
 539
 540 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 541 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 542                             5, 1);
 543 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 544                             5, 2);
 545
 546 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 547 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 548                             6, 1);
 549 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 550                             6, 2);
 551
 552 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 553 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 554                             7, 1);
 555 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 556                             7, 2);
 557
 558 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 559
 560 /* 3 temperatures */
 561 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 562                          char *buf)
 563 {
 564         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 565         int nr = sattr->nr;
 566         int index = sattr->index;
 567         struct it87_data *data = it87_update_device(dev);
 568
 569         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 570 }
 571
 572 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 573                         const char *buf, size_t count)
 574 {
 575         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 576         int nr = sattr->nr;
 577         int index = sattr->index;
 578         struct it87_data *data = dev_get_drvdata(dev);
 579         long val;
 580         u8 reg, regval;
 581
 582         if (kstrtol(buf, 10, &val) < 0)
 583                 return -EINVAL;
 584
 585         mutex_lock(&data->update_lock);
 586
 587         switch (index) {
 588         default:
 589         case 1:
 590                 reg = IT87_REG_TEMP_LOW(nr);
 591                 break;
 592         case 2:
 593                 reg = IT87_REG_TEMP_HIGH(nr);
 594                 break;
 595         case 3:
 596                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 597                 if (!(regval & 0x80)) {
 598                         regval |= 0x80;
 599                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 600                 }
 601                 data->valid = 0;
 602                 reg = IT87_REG_TEMP_OFFSET[nr];
 603                 break;
 604         }
 605
 606         data->temp[nr][index] = TEMP_TO_REG(val);
 607         it87_write_value(data, reg, data->temp[nr][index]);
 608         mutex_unlock(&data->update_lock);
 609         return count;
 610 }
 611
 612 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
 613 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 614                             0, 1);
 615 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 616                             0, 2);
 617 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
 618                             set_temp, 0, 3);
 619 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
 620 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 621                             1, 1);
 622 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 623                             1, 2);
 624 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
 625                             set_temp, 1, 3);
 626 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
 627 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 628                             2, 1);
 629 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 630                             2, 2);
 631 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
 632                             set_temp, 2, 3);
 633
 634 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
 635                               char *buf)
 636 {
 637         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 638         int nr = sensor_attr->index;
 639         struct it87_data *data = it87_update_device(dev);
 640         u8 reg = data->sensor;      /* In case value is updated while used */
 641         u8 extra = data->extra;
 642
 643         if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
 644             || (has_temp_old_peci(data, nr) && (extra & 0x80)))
 645                 return sprintf(buf, "6\n");  /* Intel PECI */
 646         if (reg & (1 << nr))
 647                 return sprintf(buf, "3\n");  /* thermal diode */
 648         if (reg & (8 << nr))
 649                 return sprintf(buf, "4\n");  /* thermistor */
 650         return sprintf(buf, "0\n");      /* disabled */
 651 }
 652
 653 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
 654                              const char *buf, size_t count)
 655 {
 656         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 657         int nr = sensor_attr->index;
 658
 659         struct it87_data *data = dev_get_drvdata(dev);
 660         long val;
 661         u8 reg, extra;
 662
 663         if (kstrtol(buf, 10, &val) < 0)
 664                 return -EINVAL;
 665
 666         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 667         reg &= ~(1 << nr);
 668         reg &= ~(8 << nr);
 669         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
 670                 reg &= 0x3f;
 671         extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
 672         if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
 673                 extra &= 0x7f;
 674         if (val == 2) { /* backwards compatibility */
 675                 dev_warn(dev,
 676                          "Sensor type 2 is deprecated, please use 4 instead\n");
 677                 val = 4;
 678         }
 679         /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
 680         if (val == 3)
 681                 reg |= 1 << nr;
 682         else if (val == 4)
 683                 reg |= 8 << nr;
 684         else if (has_temp_peci(data, nr) && val == 6)
 685                 reg |= (nr + 1) << 6;
 686         else if (has_temp_old_peci(data, nr) && val == 6)
 687                 extra |= 0x80;
 688         else if (val != 0)
 689                 return -EINVAL;
 690
 691         mutex_lock(&data->update_lock);
 692         data->sensor = reg;
 693         data->extra = extra;
 694         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
 695         if (has_temp_old_peci(data, nr))
 696                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
 697         data->valid = 0;        /* Force cache refresh */
 698         mutex_unlock(&data->update_lock);
 699         return count;
 700 }
 701
 702 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
 703                           set_temp_type, 0);
 704 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
 705                           set_temp_type, 1);
 706 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
 707                           set_temp_type, 2);
 708
 709 /* 3 Fans */
 710
 711 static int pwm_mode(const struct it87_data *data, int nr)
 712 {
 713         int ctrl = data->fan_main_ctrl & (1 << nr);
 714
 715         if (ctrl == 0)                                  /* Full speed */
 716                 return 0;
 717         if (data->pwm_ctrl[nr] & 0x80)                  /* Automatic mode */
 718                 return 2;
 719         else                                            /* Manual mode */
 720                 return 1;
 721 }
 722
 723 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 724                         char *buf)
 725 {
 726         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 727         int nr = sattr->nr;
 728         int index = sattr->index;
 729         int speed;
 730         struct it87_data *data = it87_update_device(dev);
 731
 732         speed = has_16bit_fans(data) ?
 733                 FAN16_FROM_REG(data->fan[nr][index]) :
 734                 FAN_FROM_REG(data->fan[nr][index],
 735                              DIV_FROM_REG(data->fan_div[nr]));
 736         return sprintf(buf, "%d\n", speed);
 737 }
 738
 739 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 740                 char *buf)
 741 {
 742         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 743         int nr = sensor_attr->index;
 744
 745         struct it87_data *data = it87_update_device(dev);
 746         return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
 747 }
 748 static ssize_t show_pwm_enable(struct device *dev,
 749                 struct device_attribute *attr, char *buf)
 750 {
 751         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 752         int nr = sensor_attr->index;
 753
 754         struct it87_data *data = it87_update_device(dev);
 755         return sprintf(buf, "%d\n", pwm_mode(data, nr));
 756 }
 757 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 758                 char *buf)
 759 {
 760         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 761         int nr = sensor_attr->index;
 762
 763         struct it87_data *data = it87_update_device(dev);
 764         return sprintf(buf, "%d\n",
 765                        pwm_from_reg(data, data->pwm_duty[nr]));
 766 }
 767 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
 768                 char *buf)
 769 {
 770         struct it87_data *data = it87_update_device(dev);
 771         int index = (data->fan_ctl >> 4) & 0x07;
 772
 773         return sprintf(buf, "%u\n", pwm_freq[index]);
 774 }
 775
 776 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 777                        const char *buf, size_t count)
 778 {
 779         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 780         int nr = sattr->nr;
 781         int index = sattr->index;
 782
 783         struct it87_data *data = dev_get_drvdata(dev);
 784         long val;
 785         u8 reg;
 786
 787         if (kstrtol(buf, 10, &val) < 0)
 788                 return -EINVAL;
 789
 790         mutex_lock(&data->update_lock);
 791
 792         if (has_16bit_fans(data)) {
 793                 data->fan[nr][index] = FAN16_TO_REG(val);
 794                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 795                                  data->fan[nr][index] & 0xff);
 796                 it87_write_value(data, IT87_REG_FANX_MIN[nr],
 797                                  data->fan[nr][index] >> 8);
 798         } else {
 799                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
 800                 switch (nr) {
 801                 case 0:
 802                         data->fan_div[nr] = reg & 0x07;
 803                         break;
 804                 case 1:
 805                         data->fan_div[nr] = (reg >> 3) & 0x07;
 806                         break;
 807                 case 2:
 808                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
 809                         break;
 810                 }
 811                 data->fan[nr][index] =
 812                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 813                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 814                                  data->fan[nr][index]);
 815         }
 816
 817         mutex_unlock(&data->update_lock);
 818         return count;
 819 }
 820
 821 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 822                 const char *buf, size_t count)
 823 {
 824         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 825         int nr = sensor_attr->index;
 826
 827         struct it87_data *data = dev_get_drvdata(dev);
 828         unsigned long val;
 829         int min;
 830         u8 old;
 831
 832         if (kstrtoul(buf, 10, &val) < 0)
 833                 return -EINVAL;
 834
 835         mutex_lock(&data->update_lock);
 836         old = it87_read_value(data, IT87_REG_FAN_DIV);
 837
 838         /* Save fan min limit */
 839         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
 840
 841         switch (nr) {
 842         case 0:
 843         case 1:
 844                 data->fan_div[nr] = DIV_TO_REG(val);
 845                 break;
 846         case 2:
 847                 if (val < 8)
 848                         data->fan_div[nr] = 1;
 849                 else
 850                         data->fan_div[nr] = 3;
 851         }
 852         val = old & 0x80;
 853         val |= (data->fan_div[0] & 0x07);
 854         val |= (data->fan_div[1] & 0x07) << 3;
 855         if (data->fan_div[2] == 3)
 856                 val |= 0x1 << 6;
 857         it87_write_value(data, IT87_REG_FAN_DIV, val);
 858
 859         /* Restore fan min limit */
 860         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 861         it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
 862
 863         mutex_unlock(&data->update_lock);
 864         return count;
 865 }
 866
 867 /* Returns 0 if OK, -EINVAL otherwise */
 868 static int check_trip_points(struct device *dev, int nr)
 869 {
 870         const struct it87_data *data = dev_get_drvdata(dev);
 871         int i, err = 0;
 872
 873         if (has_old_autopwm(data)) {
 874                 for (i = 0; i < 3; i++) {
 875                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
 876                                 err = -EINVAL;
 877                 }
 878                 for (i = 0; i < 2; i++) {
 879                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
 880                                 err = -EINVAL;
 881                 }
 882         }
 883
 884         if (err) {
 885                 dev_err(dev,
 886                         "Inconsistent trip points, not switching to automatic mode\n");
 887                 dev_err(dev, "Adjust the trip points and try again\n");
 888         }
 889         return err;
 890 }
 891
 892 static ssize_t set_pwm_enable(struct device *dev,
 893                 struct device_attribute *attr, const char *buf, size_t count)
 894 {
 895         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 896         int nr = sensor_attr->index;
 897
 898         struct it87_data *data = dev_get_drvdata(dev);
 899         long val;
 900
 901         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
 902                 return -EINVAL;
 903
 904         /* Check trip points before switching to automatic mode */
 905         if (val == 2) {
 906                 if (check_trip_points(dev, nr) < 0)
 907                         return -EINVAL;
 908         }
 909
 910         mutex_lock(&data->update_lock);
 911
 912         if (val == 0) {
 913                 int tmp;
 914                 /* make sure the fan is on when in on/off mode */
 915                 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
 916                 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
 917                 /* set on/off mode */
 918                 data->fan_main_ctrl &= ~(1 << nr);
 919                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 920                                  data->fan_main_ctrl);
 921         } else {
 922                 if (val == 1)                           /* Manual mode */
 923                         data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
 924                                              data->pwm_temp_map[nr] :
 925                                              data->pwm_duty[nr];
 926                 else                                    /* Automatic mode */
 927                         data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
 928                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
 929                 /* set SmartGuardian mode */
 930                 data->fan_main_ctrl |= (1 << nr);
 931                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 932                                  data->fan_main_ctrl);
 933         }
 934
 935         mutex_unlock(&data->update_lock);
 936         return count;
 937 }
 938 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 939                 const char *buf, size_t count)
 940 {
 941         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 942         int nr = sensor_attr->index;
 943
 944         struct it87_data *data = dev_get_drvdata(dev);
 945         long val;
 946
 947         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
 948                 return -EINVAL;
 949
 950         mutex_lock(&data->update_lock);
 951         if (has_newer_autopwm(data)) {
 952                 /*
 953                  * If we are in automatic mode, the PWM duty cycle register
 954                  * is read-only so we can't write the value.
 955                  */
 956                 if (data->pwm_ctrl[nr] & 0x80) {
 957                         mutex_unlock(&data->update_lock);
 958                         return -EBUSY;
 959                 }
 960                 data->pwm_duty[nr] = pwm_to_reg(data, val);
 961                 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
 962                                  data->pwm_duty[nr]);
 963         } else {
 964                 data->pwm_duty[nr] = pwm_to_reg(data, val);
 965                 /*
 966                  * If we are in manual mode, write the duty cycle immediately;
 967                  * otherwise, just store it for later use.
 968                  */
 969                 if (!(data->pwm_ctrl[nr] & 0x80)) {
 970                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
 971                         it87_write_value(data, IT87_REG_PWM(nr),
 972                                          data->pwm_ctrl[nr]);
 973                 }
 974         }
 975         mutex_unlock(&data->update_lock);
 976         return count;
 977 }
 978 static ssize_t set_pwm_freq(struct device *dev,
 979                 struct device_attribute *attr, const char *buf, size_t count)
 980 {
 981         struct it87_data *data = dev_get_drvdata(dev);
 982         unsigned long val;
 983         int i;
 984
 985         if (kstrtoul(buf, 10, &val) < 0)
 986                 return -EINVAL;
 987
 988         /* Search for the nearest available frequency */
 989         for (i = 0; i < 7; i++) {
 990                 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
 991                         break;
 992         }
 993
 994         mutex_lock(&data->update_lock);
 995         data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
 996         data->fan_ctl |= i << 4;
 997         it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
 998         mutex_unlock(&data->update_lock);
 999
1000         return count;
1001 }
1002 static ssize_t show_pwm_temp_map(struct device *dev,
1003                 struct device_attribute *attr, char *buf)
1004 {
1005         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1006         int nr = sensor_attr->index;
1007
1008         struct it87_data *data = it87_update_device(dev);
1009         int map;
1010
1011         if (data->pwm_temp_map[nr] < 3)
1012                 map = 1 << data->pwm_temp_map[nr];
1013         else
1014                 map = 0;                        /* Should never happen */
1015         return sprintf(buf, "%d\n", map);
1016 }
1017 static ssize_t set_pwm_temp_map(struct device *dev,
1018                 struct device_attribute *attr, const char *buf, size_t count)
1019 {
1020         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1021         int nr = sensor_attr->index;
1022
1023         struct it87_data *data = dev_get_drvdata(dev);
1024         long val;
1025         u8 reg;
1026
1027         /*
1028          * This check can go away if we ever support automatic fan speed
1029          * control on newer chips.
1030          */
1031         if (!has_old_autopwm(data)) {
1032                 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1033                 return -EINVAL;
1034         }
1035
1036         if (kstrtol(buf, 10, &val) < 0)
1037                 return -EINVAL;
1038
1039         switch (val) {
1040         case (1 << 0):
1041                 reg = 0x00;
1042                 break;
1043         case (1 << 1):
1044                 reg = 0x01;
1045                 break;
1046         case (1 << 2):
1047                 reg = 0x02;
1048                 break;
1049         default:
1050                 return -EINVAL;
1051         }
1052
1053         mutex_lock(&data->update_lock);
1054         data->pwm_temp_map[nr] = reg;
1055         /*
1056          * If we are in automatic mode, write the temp mapping immediately;
1057          * otherwise, just store it for later use.
1058          */
1059         if (data->pwm_ctrl[nr] & 0x80) {
1060                 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1061                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1062         }
1063         mutex_unlock(&data->update_lock);
1064         return count;
1065 }
1066
1067 static ssize_t show_auto_pwm(struct device *dev,
1068                 struct device_attribute *attr, char *buf)
1069 {
1070         struct it87_data *data = it87_update_device(dev);
1071         struct sensor_device_attribute_2 *sensor_attr =
1072                         to_sensor_dev_attr_2(attr);
1073         int nr = sensor_attr->nr;
1074         int point = sensor_attr->index;
1075
1076         return sprintf(buf, "%d\n",
1077                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1078 }
1079
1080 static ssize_t set_auto_pwm(struct device *dev,
1081                 struct device_attribute *attr, const char *buf, size_t count)
1082 {
1083         struct it87_data *data = dev_get_drvdata(dev);
1084         struct sensor_device_attribute_2 *sensor_attr =
1085                         to_sensor_dev_attr_2(attr);
1086         int nr = sensor_attr->nr;
1087         int point = sensor_attr->index;
1088         long val;
1089
1090         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1091                 return -EINVAL;
1092
1093         mutex_lock(&data->update_lock);
1094         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1095         it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1096                          data->auto_pwm[nr][point]);
1097         mutex_unlock(&data->update_lock);
1098         return count;
1099 }
1100
1101 static ssize_t show_auto_temp(struct device *dev,
1102                 struct device_attribute *attr, char *buf)
1103 {
1104         struct it87_data *data = it87_update_device(dev);
1105         struct sensor_device_attribute_2 *sensor_attr =
1106                         to_sensor_dev_attr_2(attr);
1107         int nr = sensor_attr->nr;
1108         int point = sensor_attr->index;
1109
1110         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1111 }
1112
1113 static ssize_t set_auto_temp(struct device *dev,
1114                 struct device_attribute *attr, const char *buf, size_t count)
1115 {
1116         struct it87_data *data = dev_get_drvdata(dev);
1117         struct sensor_device_attribute_2 *sensor_attr =
1118                         to_sensor_dev_attr_2(attr);
1119         int nr = sensor_attr->nr;
1120         int point = sensor_attr->index;
1121         long val;
1122
1123         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1124                 return -EINVAL;
1125
1126         mutex_lock(&data->update_lock);
1127         data->auto_temp[nr][point] = TEMP_TO_REG(val);
1128         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1129                          data->auto_temp[nr][point]);
1130         mutex_unlock(&data->update_lock);
1131         return count;
1132 }
1133
1134 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1135 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1136                             0, 1);
1137 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1138                           set_fan_div, 0);
1139
1140 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1141 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1142                             1, 1);
1143 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1144                           set_fan_div, 1);
1145
1146 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1147 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1148                             2, 1);
1149 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1150                           set_fan_div, 2);
1151
1152 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1153 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1154                             3, 1);
1155
1156 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1157 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1158                             4, 1);
1159
1160 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1161                           show_pwm_enable, set_pwm_enable, 0);
1162 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1163 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1164 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1165                           show_pwm_temp_map, set_pwm_temp_map, 0);
1166 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1167                             show_auto_pwm, set_auto_pwm, 0, 0);
1168 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1169                             show_auto_pwm, set_auto_pwm, 0, 1);
1170 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1171                             show_auto_pwm, set_auto_pwm, 0, 2);
1172 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1173                             show_auto_pwm, NULL, 0, 3);
1174 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1175                             show_auto_temp, set_auto_temp, 0, 1);
1176 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1177                             show_auto_temp, set_auto_temp, 0, 0);
1178 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1179                             show_auto_temp, set_auto_temp, 0, 2);
1180 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1181                             show_auto_temp, set_auto_temp, 0, 3);
1182 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1183                             show_auto_temp, set_auto_temp, 0, 4);
1184
1185 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1186                           show_pwm_enable, set_pwm_enable, 1);
1187 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1188 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1189 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1190                           show_pwm_temp_map, set_pwm_temp_map, 1);
1191 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1192                             show_auto_pwm, set_auto_pwm, 1, 0);
1193 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1194                             show_auto_pwm, set_auto_pwm, 1, 1);
1195 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1196                             show_auto_pwm, set_auto_pwm, 1, 2);
1197 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1198                             show_auto_pwm, NULL, 1, 3);
1199 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1200                             show_auto_temp, set_auto_temp, 1, 1);
1201 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1202                             show_auto_temp, set_auto_temp, 1, 0);
1203 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1204                             show_auto_temp, set_auto_temp, 1, 2);
1205 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1206                             show_auto_temp, set_auto_temp, 1, 3);
1207 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1208                             show_auto_temp, set_auto_temp, 1, 4);
1209
1210 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1211                           show_pwm_enable, set_pwm_enable, 2);
1212 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1213 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1214 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1215                           show_pwm_temp_map, set_pwm_temp_map, 2);
1216 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1217                             show_auto_pwm, set_auto_pwm, 2, 0);
1218 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1219                             show_auto_pwm, set_auto_pwm, 2, 1);
1220 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1221                             show_auto_pwm, set_auto_pwm, 2, 2);
1222 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1223                             show_auto_pwm, NULL, 2, 3);
1224 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1225                             show_auto_temp, set_auto_temp, 2, 1);
1226 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1227                             show_auto_temp, set_auto_temp, 2, 0);
1228 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1229                             show_auto_temp, set_auto_temp, 2, 2);
1230 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1231                             show_auto_temp, set_auto_temp, 2, 3);
1232 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1233                             show_auto_temp, set_auto_temp, 2, 4);
1234
1235 /* Alarms */
1236 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1237                 char *buf)
1238 {
1239         struct it87_data *data = it87_update_device(dev);
1240         return sprintf(buf, "%u\n", data->alarms);
1241 }
1242 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1243
1244 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1245                 char *buf)
1246 {
1247         int bitnr = to_sensor_dev_attr(attr)->index;
1248         struct it87_data *data = it87_update_device(dev);
1249         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1250 }
1251
1252 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1253                 *attr, const char *buf, size_t count)
1254 {
1255         struct it87_data *data = dev_get_drvdata(dev);
1256         long val;
1257         int config;
1258
1259         if (kstrtol(buf, 10, &val) < 0 || val != 0)
1260                 return -EINVAL;
1261
1262         mutex_lock(&data->update_lock);
1263         config = it87_read_value(data, IT87_REG_CONFIG);
1264         if (config < 0) {
1265                 count = config;
1266         } else {
1267                 config |= 1 << 5;
1268                 it87_write_value(data, IT87_REG_CONFIG, config);
1269                 /* Invalidate cache to force re-read */
1270                 data->valid = 0;
1271         }
1272         mutex_unlock(&data->update_lock);
1273
1274         return count;
1275 }
1276
1277 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1278 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1279 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1280 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1281 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1282 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1283 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1284 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1285 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1286 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1287 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1288 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1289 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1290 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1291 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1292 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1293 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1294                           show_alarm, clear_intrusion, 4);
1295
1296 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1297                 char *buf)
1298 {
1299         int bitnr = to_sensor_dev_attr(attr)->index;
1300         struct it87_data *data = it87_update_device(dev);
1301         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1302 }
1303 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1304                 const char *buf, size_t count)
1305 {
1306         int bitnr = to_sensor_dev_attr(attr)->index;
1307         struct it87_data *data = dev_get_drvdata(dev);
1308         long val;
1309
1310         if (kstrtol(buf, 10, &val) < 0
1311          || (val != 0 && val != 1))
1312                 return -EINVAL;
1313
1314         mutex_lock(&data->update_lock);
1315         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1316         if (val)
1317                 data->beeps |= (1 << bitnr);
1318         else
1319                 data->beeps &= ~(1 << bitnr);
1320         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1321         mutex_unlock(&data->update_lock);
1322         return count;
1323 }
1324
1325 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1326                           show_beep, set_beep, 1);
1327 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1328 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1329 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1330 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1331 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1332 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1333 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1334 /* fanX_beep writability is set later */
1335 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1336 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1337 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1338 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1339 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1340 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1341                           show_beep, set_beep, 2);
1342 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1343 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1344
1345 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1346                 char *buf)
1347 {
1348         struct it87_data *data = dev_get_drvdata(dev);
1349         return sprintf(buf, "%u\n", data->vrm);
1350 }
1351 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1352                 const char *buf, size_t count)
1353 {
1354         struct it87_data *data = dev_get_drvdata(dev);
1355         unsigned long val;
1356
1357         if (kstrtoul(buf, 10, &val) < 0)
1358                 return -EINVAL;
1359
1360         data->vrm = val;
1361
1362         return count;
1363 }
1364 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1365
1366 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1367                 char *buf)
1368 {
1369         struct it87_data *data = it87_update_device(dev);
1370         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1371 }
1372 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1373
1374 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1375                 char *buf)
1376 {
1377         static const char * const labels[] = {
1378                 "+5V",
1379                 "5VSB",
1380                 "Vbat",
1381         };
1382         static const char * const labels_it8721[] = {
1383                 "+3.3V",
1384                 "3VSB",
1385                 "Vbat",
1386         };
1387         struct it87_data *data = dev_get_drvdata(dev);
1388         int nr = to_sensor_dev_attr(attr)->index;
1389
1390         return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1391                                                        : labels[nr]);
1392 }
1393 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1394 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1395 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1396
1397 static ssize_t show_name(struct device *dev, struct device_attribute
1398                          *devattr, char *buf)
1399 {
1400         struct it87_data *data = dev_get_drvdata(dev);
1401         return sprintf(buf, "%s\n", data->name);
1402 }
1403 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1404
1405 static struct attribute *it87_attributes_in[9][5] = {
1406 {
1407         &sensor_dev_attr_in0_input.dev_attr.attr,
1408         &sensor_dev_attr_in0_min.dev_attr.attr,
1409         &sensor_dev_attr_in0_max.dev_attr.attr,
1410         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1411         NULL
1412 }, {
1413         &sensor_dev_attr_in1_input.dev_attr.attr,
1414         &sensor_dev_attr_in1_min.dev_attr.attr,
1415         &sensor_dev_attr_in1_max.dev_attr.attr,
1416         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1417         NULL
1418 }, {
1419         &sensor_dev_attr_in2_input.dev_attr.attr,
1420         &sensor_dev_attr_in2_min.dev_attr.attr,
1421         &sensor_dev_attr_in2_max.dev_attr.attr,
1422         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1423         NULL
1424 }, {
1425         &sensor_dev_attr_in3_input.dev_attr.attr,
1426         &sensor_dev_attr_in3_min.dev_attr.attr,
1427         &sensor_dev_attr_in3_max.dev_attr.attr,
1428         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1429         NULL
1430 }, {
1431         &sensor_dev_attr_in4_input.dev_attr.attr,
1432         &sensor_dev_attr_in4_min.dev_attr.attr,
1433         &sensor_dev_attr_in4_max.dev_attr.attr,
1434         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1435         NULL
1436 }, {
1437         &sensor_dev_attr_in5_input.dev_attr.attr,
1438         &sensor_dev_attr_in5_min.dev_attr.attr,
1439         &sensor_dev_attr_in5_max.dev_attr.attr,
1440         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1441         NULL
1442 }, {
1443         &sensor_dev_attr_in6_input.dev_attr.attr,
1444         &sensor_dev_attr_in6_min.dev_attr.attr,
1445         &sensor_dev_attr_in6_max.dev_attr.attr,
1446         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1447         NULL
1448 }, {
1449         &sensor_dev_attr_in7_input.dev_attr.attr,
1450         &sensor_dev_attr_in7_min.dev_attr.attr,
1451         &sensor_dev_attr_in7_max.dev_attr.attr,
1452         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1453         NULL
1454 }, {
1455         &sensor_dev_attr_in8_input.dev_attr.attr,
1456         NULL
1457 } };
1458
1459 static const struct attribute_group it87_group_in[9] = {
1460         { .attrs = it87_attributes_in[0] },
1461         { .attrs = it87_attributes_in[1] },
1462         { .attrs = it87_attributes_in[2] },
1463         { .attrs = it87_attributes_in[3] },
1464         { .attrs = it87_attributes_in[4] },
1465         { .attrs = it87_attributes_in[5] },
1466         { .attrs = it87_attributes_in[6] },
1467         { .attrs = it87_attributes_in[7] },
1468         { .attrs = it87_attributes_in[8] },
1469 };
1470
1471 static struct attribute *it87_attributes_temp[3][6] = {
1472 {
1473         &sensor_dev_attr_temp1_input.dev_attr.attr,
1474         &sensor_dev_attr_temp1_max.dev_attr.attr,
1475         &sensor_dev_attr_temp1_min.dev_attr.attr,
1476         &sensor_dev_attr_temp1_type.dev_attr.attr,
1477         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1478         NULL
1479 } , {
1480         &sensor_dev_attr_temp2_input.dev_attr.attr,
1481         &sensor_dev_attr_temp2_max.dev_attr.attr,
1482         &sensor_dev_attr_temp2_min.dev_attr.attr,
1483         &sensor_dev_attr_temp2_type.dev_attr.attr,
1484         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1485         NULL
1486 } , {
1487         &sensor_dev_attr_temp3_input.dev_attr.attr,
1488         &sensor_dev_attr_temp3_max.dev_attr.attr,
1489         &sensor_dev_attr_temp3_min.dev_attr.attr,
1490         &sensor_dev_attr_temp3_type.dev_attr.attr,
1491         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1492         NULL
1493 } };
1494
1495 static const struct attribute_group it87_group_temp[3] = {
1496         { .attrs = it87_attributes_temp[0] },
1497         { .attrs = it87_attributes_temp[1] },
1498         { .attrs = it87_attributes_temp[2] },
1499 };
1500
1501 static struct attribute *it87_attributes_temp_offset[] = {
1502         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1503         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1504         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1505 };
1506
1507 static struct attribute *it87_attributes[] = {
1508         &dev_attr_alarms.attr,
1509         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1510         &dev_attr_name.attr,
1511         NULL
1512 };
1513
1514 static const struct attribute_group it87_group = {
1515         .attrs = it87_attributes,
1516 };
1517
1518 static struct attribute *it87_attributes_in_beep[] = {
1519         &sensor_dev_attr_in0_beep.dev_attr.attr,
1520         &sensor_dev_attr_in1_beep.dev_attr.attr,
1521         &sensor_dev_attr_in2_beep.dev_attr.attr,
1522         &sensor_dev_attr_in3_beep.dev_attr.attr,
1523         &sensor_dev_attr_in4_beep.dev_attr.attr,
1524         &sensor_dev_attr_in5_beep.dev_attr.attr,
1525         &sensor_dev_attr_in6_beep.dev_attr.attr,
1526         &sensor_dev_attr_in7_beep.dev_attr.attr,
1527         NULL
1528 };
1529
1530 static struct attribute *it87_attributes_temp_beep[] = {
1531         &sensor_dev_attr_temp1_beep.dev_attr.attr,
1532         &sensor_dev_attr_temp2_beep.dev_attr.attr,
1533         &sensor_dev_attr_temp3_beep.dev_attr.attr,
1534 };
1535
1536 static struct attribute *it87_attributes_fan[5][3+1] = { {
1537         &sensor_dev_attr_fan1_input.dev_attr.attr,
1538         &sensor_dev_attr_fan1_min.dev_attr.attr,
1539         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1540         NULL
1541 }, {
1542         &sensor_dev_attr_fan2_input.dev_attr.attr,
1543         &sensor_dev_attr_fan2_min.dev_attr.attr,
1544         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1545         NULL
1546 }, {
1547         &sensor_dev_attr_fan3_input.dev_attr.attr,
1548         &sensor_dev_attr_fan3_min.dev_attr.attr,
1549         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1550         NULL
1551 }, {
1552         &sensor_dev_attr_fan4_input.dev_attr.attr,
1553         &sensor_dev_attr_fan4_min.dev_attr.attr,
1554         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1555         NULL
1556 }, {
1557         &sensor_dev_attr_fan5_input.dev_attr.attr,
1558         &sensor_dev_attr_fan5_min.dev_attr.attr,
1559         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1560         NULL
1561 } };
1562
1563 static const struct attribute_group it87_group_fan[5] = {
1564         { .attrs = it87_attributes_fan[0] },
1565         { .attrs = it87_attributes_fan[1] },
1566         { .attrs = it87_attributes_fan[2] },
1567         { .attrs = it87_attributes_fan[3] },
1568         { .attrs = it87_attributes_fan[4] },
1569 };
1570
1571 static const struct attribute *it87_attributes_fan_div[] = {
1572         &sensor_dev_attr_fan1_div.dev_attr.attr,
1573         &sensor_dev_attr_fan2_div.dev_attr.attr,
1574         &sensor_dev_attr_fan3_div.dev_attr.attr,
1575 };
1576
1577 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1578         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1579         &sensor_dev_attr_pwm1.dev_attr.attr,
1580         &dev_attr_pwm1_freq.attr,
1581         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1582         NULL
1583 }, {
1584         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1585         &sensor_dev_attr_pwm2.dev_attr.attr,
1586         &dev_attr_pwm2_freq.attr,
1587         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1588         NULL
1589 }, {
1590         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1591         &sensor_dev_attr_pwm3.dev_attr.attr,
1592         &dev_attr_pwm3_freq.attr,
1593         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1594         NULL
1595 } };
1596
1597 static const struct attribute_group it87_group_pwm[3] = {
1598         { .attrs = it87_attributes_pwm[0] },
1599         { .attrs = it87_attributes_pwm[1] },
1600         { .attrs = it87_attributes_pwm[2] },
1601 };
1602
1603 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1604         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1605         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1606         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1607         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1608         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1609         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1610         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1611         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1612         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1613         NULL
1614 }, {
1615         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1616         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1617         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1618         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1619         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1620         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1621         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1622         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1623         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1624         NULL
1625 }, {
1626         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1627         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1628         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1629         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1630         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1631         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1632         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1633         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1634         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1635         NULL
1636 } };
1637
1638 static const struct attribute_group it87_group_autopwm[3] = {
1639         { .attrs = it87_attributes_autopwm[0] },
1640         { .attrs = it87_attributes_autopwm[1] },
1641         { .attrs = it87_attributes_autopwm[2] },
1642 };
1643
1644 static struct attribute *it87_attributes_fan_beep[] = {
1645         &sensor_dev_attr_fan1_beep.dev_attr.attr,
1646         &sensor_dev_attr_fan2_beep.dev_attr.attr,
1647         &sensor_dev_attr_fan3_beep.dev_attr.attr,
1648         &sensor_dev_attr_fan4_beep.dev_attr.attr,
1649         &sensor_dev_attr_fan5_beep.dev_attr.attr,
1650 };
1651
1652 static struct attribute *it87_attributes_vid[] = {
1653         &dev_attr_vrm.attr,
1654         &dev_attr_cpu0_vid.attr,
1655         NULL
1656 };
1657
1658 static const struct attribute_group it87_group_vid = {
1659         .attrs = it87_attributes_vid,
1660 };
1661
1662 static struct attribute *it87_attributes_label[] = {
1663         &sensor_dev_attr_in3_label.dev_attr.attr,
1664         &sensor_dev_attr_in7_label.dev_attr.attr,
1665         &sensor_dev_attr_in8_label.dev_attr.attr,
1666         NULL
1667 };
1668
1669 static const struct attribute_group it87_group_label = {
1670         .attrs = it87_attributes_label,
1671 };
1672
1673 /* SuperIO detection - will change isa_address if a chip is found */
1674 static int __init it87_find(unsigned short *address,
1675         struct it87_sio_data *sio_data)
1676 {
1677         int err;
1678         u16 chip_type;
1679         const char *board_vendor, *board_name;
1680
1681         err = superio_enter();
1682         if (err)
1683                 return err;
1684
1685         err = -ENODEV;
1686         chip_type = force_id ? force_id : superio_inw(DEVID);
1687
1688         switch (chip_type) {
1689         case IT8705F_DEVID:
1690                 sio_data->type = it87;
1691                 break;
1692         case IT8712F_DEVID:
1693                 sio_data->type = it8712;
1694                 break;
1695         case IT8716F_DEVID:
1696         case IT8726F_DEVID:
1697                 sio_data->type = it8716;
1698                 break;
1699         case IT8718F_DEVID:
1700                 sio_data->type = it8718;
1701                 break;
1702         case IT8720F_DEVID:
1703                 sio_data->type = it8720;
1704                 break;
1705         case IT8721F_DEVID:
1706                 sio_data->type = it8721;
1707                 break;
1708         case IT8728F_DEVID:
1709                 sio_data->type = it8728;
1710                 break;
1711         case IT8782F_DEVID:
1712                 sio_data->type = it8782;
1713                 break;
1714         case IT8783E_DEVID:
1715                 sio_data->type = it8783;
1716                 break;
1717         case 0xffff:    /* No device at all */
1718                 goto exit;
1719         default:
1720                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1721                 goto exit;
1722         }
1723
1724         superio_select(PME);
1725         if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1726                 pr_info("Device not activated, skipping\n");
1727                 goto exit;
1728         }
1729
1730         *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1731         if (*address == 0) {
1732                 pr_info("Base address not set, skipping\n");
1733                 goto exit;
1734         }
1735
1736         err = 0;
1737         sio_data->revision = superio_inb(DEVREV) & 0x0f;
1738         pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1739                 chip_type, *address, sio_data->revision);
1740
1741         /* in8 (Vbat) is always internal */
1742         sio_data->internal = (1 << 2);
1743
1744         /* Read GPIO config and VID value from LDN 7 (GPIO) */
1745         if (sio_data->type == it87) {
1746                 /* The IT8705F doesn't have VID pins at all */
1747                 sio_data->skip_vid = 1;
1748
1749                 /* The IT8705F has a different LD number for GPIO */
1750                 superio_select(5);
1751                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1752         } else if (sio_data->type == it8783) {
1753                 int reg25, reg27, reg2A, reg2C, regEF;
1754
1755                 sio_data->skip_vid = 1; /* No VID */
1756
1757                 superio_select(GPIO);
1758
1759                 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1760                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1761                 reg2A = superio_inb(IT87_SIO_PINX1_REG);
1762                 reg2C = superio_inb(IT87_SIO_PINX2_REG);
1763                 regEF = superio_inb(IT87_SIO_SPI_REG);
1764
1765                 /* Check if fan3 is there or not */
1766                 if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
1767                         sio_data->skip_fan |= (1 << 2);
1768                 if ((reg25 & (1 << 4))
1769                     || (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
1770                         sio_data->skip_pwm |= (1 << 2);
1771
1772                 /* Check if fan2 is there or not */
1773                 if (reg27 & (1 << 7))
1774                         sio_data->skip_fan |= (1 << 1);
1775                 if (reg27 & (1 << 3))
1776                         sio_data->skip_pwm |= (1 << 1);
1777
1778                 /* VIN5 */
1779                 if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
1780                         sio_data->skip_in |= (1 << 5); /* No VIN5 */
1781
1782                 /* VIN6 */
1783                 if (reg27 & (1 << 1))
1784                         sio_data->skip_in |= (1 << 6); /* No VIN6 */
1785
1786                 /*
1787                  * VIN7
1788                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1789                  */
1790                 if (reg27 & (1 << 2)) {
1791                         /*
1792                          * The data sheet is a bit unclear regarding the
1793                          * internal voltage divider for VCCH5V. It says
1794                          * "This bit enables and switches VIN7 (pin 91) to the
1795                          * internal voltage divider for VCCH5V".
1796                          * This is different to other chips, where the internal
1797                          * voltage divider would connect VIN7 to an internal
1798                          * voltage source. Maybe that is the case here as well.
1799                          *
1800                          * Since we don't know for sure, re-route it if that is
1801                          * not the case, and ask the user to report if the
1802                          * resulting voltage is sane.
1803                          */
1804                         if (!(reg2C & (1 << 1))) {
1805                                 reg2C |= (1 << 1);
1806                                 superio_outb(IT87_SIO_PINX2_REG, reg2C);
1807                                 pr_notice("Routing internal VCCH5V to in7.\n");
1808                         }
1809                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1810                         pr_notice("Please report if it displays a reasonable voltage.\n");
1811                 }
1812
1813                 if (reg2C & (1 << 0))
1814                         sio_data->internal |= (1 << 0);
1815                 if (reg2C & (1 << 1))
1816                         sio_data->internal |= (1 << 1);
1817
1818                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1819
1820         } else {
1821                 int reg;
1822                 bool uart6;
1823
1824                 superio_select(GPIO);
1825
1826                 reg = superio_inb(IT87_SIO_GPIO3_REG);
1827                 if (sio_data->type == it8721 || sio_data->type == it8728 ||
1828                     sio_data->type == it8782) {
1829                         /*
1830                          * IT8721F/IT8758E, and IT8782F don't have VID pins
1831                          * at all, not sure about the IT8728F.
1832                          */
1833                         sio_data->skip_vid = 1;
1834                 } else {
1835                         /* We need at least 4 VID pins */
1836                         if (reg & 0x0f) {
1837                                 pr_info("VID is disabled (pins used for GPIO)\n");
1838                                 sio_data->skip_vid = 1;
1839                         }
1840                 }
1841
1842                 /* Check if fan3 is there or not */
1843                 if (reg & (1 << 6))
1844                         sio_data->skip_pwm |= (1 << 2);
1845                 if (reg & (1 << 7))
1846                         sio_data->skip_fan |= (1 << 2);
1847
1848                 /* Check if fan2 is there or not */
1849                 reg = superio_inb(IT87_SIO_GPIO5_REG);
1850                 if (reg & (1 << 1))
1851                         sio_data->skip_pwm |= (1 << 1);
1852                 if (reg & (1 << 2))
1853                         sio_data->skip_fan |= (1 << 1);
1854
1855                 if ((sio_data->type == it8718 || sio_data->type == it8720)
1856                  && !(sio_data->skip_vid))
1857                         sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1858
1859                 reg = superio_inb(IT87_SIO_PINX2_REG);
1860
1861                 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1862
1863                 /*
1864                  * The IT8720F has no VIN7 pin, so VCCH should always be
1865                  * routed internally to VIN7 with an internal divider.
1866                  * Curiously, there still is a configuration bit to control
1867                  * this, which means it can be set incorrectly. And even
1868                  * more curiously, many boards out there are improperly
1869                  * configured, even though the IT8720F datasheet claims
1870                  * that the internal routing of VCCH to VIN7 is the default
1871                  * setting. So we force the internal routing in this case.
1872                  *
1873                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1874                  * If UART6 is enabled, re-route VIN7 to the internal divider
1875                  * if that is not already the case.
1876                  */
1877                 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1878                         reg |= (1 << 1);
1879                         superio_outb(IT87_SIO_PINX2_REG, reg);
1880                         pr_notice("Routing internal VCCH to in7\n");
1881                 }
1882                 if (reg & (1 << 0))
1883                         sio_data->internal |= (1 << 0);
1884                 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1885                     sio_data->type == it8728)
1886                         sio_data->internal |= (1 << 1);
1887
1888                 /*
1889                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1890                  * While VIN7 can be routed to the internal voltage divider,
1891                  * VIN5 and VIN6 are not available if UART6 is enabled.
1892                  *
1893                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1894                  * is the temperature source. Since we can not read the
1895                  * temperature source here, skip_temp is preliminary.
1896                  */
1897                 if (uart6) {
1898                         sio_data->skip_in |= (1 << 5) | (1 << 6);
1899                         sio_data->skip_temp |= (1 << 2);
1900                 }
1901
1902                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1903         }
1904         if (sio_data->beep_pin)
1905                 pr_info("Beeping is supported\n");
1906
1907         /* Disable specific features based on DMI strings */
1908         board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1909         board_name = dmi_get_system_info(DMI_BOARD_NAME);
1910         if (board_vendor && board_name) {
1911                 if (strcmp(board_vendor, "nVIDIA") == 0
1912                  && strcmp(board_name, "FN68PT") == 0) {
1913                         /*
1914                          * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1915                          * connected to a fan, but to something else. One user
1916                          * has reported instant system power-off when changing
1917                          * the PWM2 duty cycle, so we disable it.
1918                          * I use the board name string as the trigger in case
1919                          * the same board is ever used in other systems.
1920                          */
1921                         pr_info("Disabling pwm2 due to hardware constraints\n");
1922                         sio_data->skip_pwm = (1 << 1);
1923                 }
1924         }
1925
1926 exit:
1927         superio_exit();
1928         return err;
1929 }
1930
1931 static void it87_remove_files(struct device *dev)
1932 {
1933         struct it87_data *data = platform_get_drvdata(pdev);
1934         struct it87_sio_data *sio_data = dev->platform_data;
1935         int i;
1936
1937         sysfs_remove_group(&dev->kobj, &it87_group);
1938         for (i = 0; i < 9; i++) {
1939                 if (sio_data->skip_in & (1 << i))
1940                         continue;
1941                 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
1942                 if (it87_attributes_in_beep[i])
1943                         sysfs_remove_file(&dev->kobj,
1944                                           it87_attributes_in_beep[i]);
1945         }
1946         for (i = 0; i < 3; i++) {
1947                 if (!(data->has_temp & (1 << i)))
1948                         continue;
1949                 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
1950                 if (has_temp_offset(data))
1951                         sysfs_remove_file(&dev->kobj,
1952                                           it87_attributes_temp_offset[i]);
1953                 if (sio_data->beep_pin)
1954                         sysfs_remove_file(&dev->kobj,
1955                                           it87_attributes_temp_beep[i]);
1956         }
1957         for (i = 0; i < 5; i++) {
1958                 if (!(data->has_fan & (1 << i)))
1959                         continue;
1960                 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
1961                 if (sio_data->beep_pin)
1962                         sysfs_remove_file(&dev->kobj,
1963                                           it87_attributes_fan_beep[i]);
1964                 if (i < 3 && !has_16bit_fans(data))
1965                         sysfs_remove_file(&dev->kobj,
1966                                           it87_attributes_fan_div[i]);
1967         }
1968         for (i = 0; i < 3; i++) {
1969                 if (sio_data->skip_pwm & (1 << 0))
1970                         continue;
1971                 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
1972                 if (has_old_autopwm(data))
1973                         sysfs_remove_group(&dev->kobj,
1974                                            &it87_group_autopwm[i]);
1975         }
1976         if (!sio_data->skip_vid)
1977                 sysfs_remove_group(&dev->kobj, &it87_group_vid);
1978         sysfs_remove_group(&dev->kobj, &it87_group_label);
1979 }
1980
1981 static int it87_probe(struct platform_device *pdev)
1982 {
1983         struct it87_data *data;
1984         struct resource *res;
1985         struct device *dev = &pdev->dev;
1986         struct it87_sio_data *sio_data = dev->platform_data;
1987         int err = 0, i;
1988         int enable_pwm_interface;
1989         int fan_beep_need_rw;
1990
1991         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1992         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
1993                                  DRVNAME)) {
1994                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1995                         (unsigned long)res->start,
1996                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
1997                 return -EBUSY;
1998         }
1999
2000         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2001         if (!data)
2002                 return -ENOMEM;
2003
2004         data->addr = res->start;
2005         data->type = sio_data->type;
2006         data->features = it87_devices[sio_data->type].features;
2007         data->peci_mask = it87_devices[sio_data->type].peci_mask;
2008         data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
2009         data->name = it87_devices[sio_data->type].name;
2010         /*
2011          * IT8705F Datasheet 0.4.1, 3h == Version G.
2012          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
2013          * These are the first revisions with 16-bit tachometer support.
2014          */
2015         switch (data->type) {
2016         case it87:
2017                 if (sio_data->revision >= 0x03) {
2018                         data->features &= ~FEAT_OLD_AUTOPWM;
2019                         data->features |= FEAT_16BIT_FANS;
2020                 }
2021                 break;
2022         case it8712:
2023                 if (sio_data->revision >= 0x08) {
2024                         data->features &= ~FEAT_OLD_AUTOPWM;
2025                         data->features |= FEAT_16BIT_FANS;
2026                 }
2027                 break;
2028         default:
2029                 break;
2030         }
2031
2032         /* Now, we do the remaining detection. */
2033         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2034          || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2035                 return -ENODEV;
2036
2037         platform_set_drvdata(pdev, data);
2038
2039         mutex_init(&data->update_lock);
2040
2041         /* Check PWM configuration */
2042         enable_pwm_interface = it87_check_pwm(dev);
2043
2044         /* Starting with IT8721F, we handle scaling of internal voltages */
2045         if (has_12mv_adc(data)) {
2046                 if (sio_data->internal & (1 << 0))
2047                         data->in_scaled |= (1 << 3);    /* in3 is AVCC */
2048                 if (sio_data->internal & (1 << 1))
2049                         data->in_scaled |= (1 << 7);    /* in7 is VSB */
2050                 if (sio_data->internal & (1 << 2))
2051                         data->in_scaled |= (1 << 8);    /* in8 is Vbat */
2052         } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2053                 if (sio_data->internal & (1 << 0))
2054                         data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
2055                 if (sio_data->internal & (1 << 1))
2056                         data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
2057         }
2058
2059         data->has_temp = 0x07;
2060         if (sio_data->skip_temp & (1 << 2)) {
2061                 if (sio_data->type == it8782
2062                     && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2063                         data->has_temp &= ~(1 << 2);
2064         }
2065
2066         /* Initialize the IT87 chip */
2067         it87_init_device(pdev);
2068
2069         /* Register sysfs hooks */
2070         err = sysfs_create_group(&dev->kobj, &it87_group);
2071         if (err)
2072                 return err;
2073
2074         for (i = 0; i < 9; i++) {
2075                 if (sio_data->skip_in & (1 << i))
2076                         continue;
2077                 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2078                 if (err)
2079                         goto error;
2080                 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2081                         err = sysfs_create_file(&dev->kobj,
2082                                                 it87_attributes_in_beep[i]);
2083                         if (err)
2084                                 goto error;
2085                 }
2086         }
2087
2088         for (i = 0; i < 3; i++) {
2089                 if (!(data->has_temp & (1 << i)))
2090                         continue;
2091                 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2092                 if (err)
2093                         goto error;
2094                 if (has_temp_offset(data)) {
2095                         err = sysfs_create_file(&dev->kobj,
2096                                                 it87_attributes_temp_offset[i]);
2097                         if (err)
2098                                 goto error;
2099                 }
2100                 if (sio_data->beep_pin) {
2101                         err = sysfs_create_file(&dev->kobj,
2102                                                 it87_attributes_temp_beep[i]);
2103                         if (err)
2104                                 goto error;
2105                 }
2106         }
2107
2108         /* Do not create fan files for disabled fans */
2109         fan_beep_need_rw = 1;
2110         for (i = 0; i < 5; i++) {
2111                 if (!(data->has_fan & (1 << i)))
2112                         continue;
2113                 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2114                 if (err)
2115                         goto error;
2116
2117                 if (i < 3 && !has_16bit_fans(data)) {
2118                         err = sysfs_create_file(&dev->kobj,
2119                                                 it87_attributes_fan_div[i]);
2120                         if (err)
2121                                 goto error;
2122                 }
2123
2124                 if (sio_data->beep_pin) {
2125                         err = sysfs_create_file(&dev->kobj,
2126                                                 it87_attributes_fan_beep[i]);
2127                         if (err)
2128                                 goto error;
2129                         if (!fan_beep_need_rw)
2130                                 continue;
2131
2132                         /*
2133                          * As we have a single beep enable bit for all fans,
2134                          * only the first enabled fan has a writable attribute
2135                          * for it.
2136                          */
2137                         if (sysfs_chmod_file(&dev->kobj,
2138                                              it87_attributes_fan_beep[i],
2139                                              S_IRUGO | S_IWUSR))
2140                                 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2141                                         i + 1);
2142                         fan_beep_need_rw = 0;
2143                 }
2144         }
2145
2146         if (enable_pwm_interface) {
2147                 for (i = 0; i < 3; i++) {
2148                         if (sio_data->skip_pwm & (1 << i))
2149                                 continue;
2150                         err = sysfs_create_group(&dev->kobj,
2151                                                  &it87_group_pwm[i]);
2152                         if (err)
2153                                 goto error;
2154
2155                         if (!has_old_autopwm(data))
2156                                 continue;
2157                         err = sysfs_create_group(&dev->kobj,
2158                                                  &it87_group_autopwm[i]);
2159                         if (err)
2160                                 goto error;
2161                 }
2162         }
2163
2164         if (!sio_data->skip_vid) {
2165                 data->vrm = vid_which_vrm();
2166                 /* VID reading from Super-I/O config space if available */
2167                 data->vid = sio_data->vid_value;
2168                 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2169                 if (err)
2170                         goto error;
2171         }
2172
2173         /* Export labels for internal sensors */
2174         for (i = 0; i < 3; i++) {
2175                 if (!(sio_data->internal & (1 << i)))
2176                         continue;
2177                 err = sysfs_create_file(&dev->kobj,
2178                                         it87_attributes_label[i]);
2179                 if (err)
2180                         goto error;
2181         }
2182
2183         data->hwmon_dev = hwmon_device_register(dev);
2184         if (IS_ERR(data->hwmon_dev)) {
2185                 err = PTR_ERR(data->hwmon_dev);
2186                 goto error;
2187         }
2188
2189         return 0;
2190
2191 error:
2192         it87_remove_files(dev);
2193         return err;
2194 }
2195
2196 static int it87_remove(struct platform_device *pdev)
2197 {
2198         struct it87_data *data = platform_get_drvdata(pdev);
2199
2200         hwmon_device_unregister(data->hwmon_dev);
2201         it87_remove_files(&pdev->dev);
2202
2203         return 0;
2204 }
2205
2206 /*
2207  * Must be called with data->update_lock held, except during initialization.
2208  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2209  * would slow down the IT87 access and should not be necessary.
2210  */
2211 static int it87_read_value(struct it87_data *data, u8 reg)
2212 {
2213         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2214         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2215 }
2216
2217 /*
2218  * Must be called with data->update_lock held, except during initialization.
2219  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2220  * would slow down the IT87 access and should not be necessary.
2221  */
2222 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2223 {
2224         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2225         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2226 }
2227
2228 /* Return 1 if and only if the PWM interface is safe to use */
2229 static int it87_check_pwm(struct device *dev)
2230 {
2231         struct it87_data *data = dev_get_drvdata(dev);
2232         /*
2233          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2234          * and polarity set to active low is sign that this is the case so we
2235          * disable pwm control to protect the user.
2236          */
2237         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2238         if ((tmp & 0x87) == 0) {
2239                 if (fix_pwm_polarity) {
2240                         /*
2241                          * The user asks us to attempt a chip reconfiguration.
2242                          * This means switching to active high polarity and
2243                          * inverting all fan speed values.
2244                          */
2245                         int i;
2246                         u8 pwm[3];
2247
2248                         for (i = 0; i < 3; i++)
2249                                 pwm[i] = it87_read_value(data,
2250                                                          IT87_REG_PWM(i));
2251
2252                         /*
2253                          * If any fan is in automatic pwm mode, the polarity
2254                          * might be correct, as suspicious as it seems, so we
2255                          * better don't change anything (but still disable the
2256                          * PWM interface).
2257                          */
2258                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2259                                 dev_info(dev,
2260                                          "Reconfiguring PWM to active high polarity\n");
2261                                 it87_write_value(data, IT87_REG_FAN_CTL,
2262                                                  tmp | 0x87);
2263                                 for (i = 0; i < 3; i++)
2264                                         it87_write_value(data,
2265                                                          IT87_REG_PWM(i),
2266                                                          0x7f & ~pwm[i]);
2267                                 return 1;
2268                         }
2269
2270                         dev_info(dev,
2271                                  "PWM configuration is too broken to be fixed\n");
2272                 }
2273
2274                 dev_info(dev,
2275                          "Detected broken BIOS defaults, disabling PWM interface\n");
2276                 return 0;
2277         } else if (fix_pwm_polarity) {
2278                 dev_info(dev,
2279                          "PWM configuration looks sane, won't touch\n");
2280         }
2281
2282         return 1;
2283 }
2284
2285 /* Called when we have found a new IT87. */
2286 static void it87_init_device(struct platform_device *pdev)
2287 {
2288         struct it87_sio_data *sio_data = pdev->dev.platform_data;
2289         struct it87_data *data = platform_get_drvdata(pdev);
2290         int tmp, i;
2291         u8 mask;
2292
2293         /*
2294          * For each PWM channel:
2295          * - If it is in automatic mode, setting to manual mode should set
2296          *   the fan to full speed by default.
2297          * - If it is in manual mode, we need a mapping to temperature
2298          *   channels to use when later setting to automatic mode later.
2299          *   Use a 1:1 mapping by default (we are clueless.)
2300          * In both cases, the value can (and should) be changed by the user
2301          * prior to switching to a different mode.
2302          * Note that this is no longer needed for the IT8721F and later, as
2303          * these have separate registers for the temperature mapping and the
2304          * manual duty cycle.
2305          */
2306         for (i = 0; i < 3; i++) {
2307                 data->pwm_temp_map[i] = i;
2308                 data->pwm_duty[i] = 0x7f;       /* Full speed */
2309                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2310         }
2311
2312         /*
2313          * Some chips seem to have default value 0xff for all limit
2314          * registers. For low voltage limits it makes no sense and triggers
2315          * alarms, so change to 0 instead. For high temperature limits, it
2316          * means -1 degree C, which surprisingly doesn't trigger an alarm,
2317          * but is still confusing, so change to 127 degrees C.
2318          */
2319         for (i = 0; i < 8; i++) {
2320                 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2321                 if (tmp == 0xff)
2322                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2323         }
2324         for (i = 0; i < 3; i++) {
2325                 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2326                 if (tmp == 0xff)
2327                         it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2328         }
2329
2330         /*
2331          * Temperature channels are not forcibly enabled, as they can be
2332          * set to two different sensor types and we can't guess which one
2333          * is correct for a given system. These channels can be enabled at
2334          * run-time through the temp{1-3}_type sysfs accessors if needed.
2335          */
2336
2337         /* Check if voltage monitors are reset manually or by some reason */
2338         tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2339         if ((tmp & 0xff) == 0) {
2340                 /* Enable all voltage monitors */
2341                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2342         }
2343
2344         /* Check if tachometers are reset manually or by some reason */
2345         mask = 0x70 & ~(sio_data->skip_fan << 4);
2346         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2347         if ((data->fan_main_ctrl & mask) == 0) {
2348                 /* Enable all fan tachometers */
2349                 data->fan_main_ctrl |= mask;
2350                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2351                                  data->fan_main_ctrl);
2352         }
2353         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2354
2355         /* Set tachometers to 16-bit mode if needed */
2356         if (has_16bit_fans(data)) {
2357                 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2358                 if (~tmp & 0x07 & data->has_fan) {
2359                         dev_dbg(&pdev->dev,
2360                                 "Setting fan1-3 to 16-bit mode\n");
2361                         it87_write_value(data, IT87_REG_FAN_16BIT,
2362                                          tmp | 0x07);
2363                 }
2364                 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2365                 if (data->type != it87 && data->type != it8782 &&
2366                     data->type != it8783) {
2367                         if (tmp & (1 << 4))
2368                                 data->has_fan |= (1 << 3); /* fan4 enabled */
2369                         if (tmp & (1 << 5))
2370                                 data->has_fan |= (1 << 4); /* fan5 enabled */
2371                 }
2372         }
2373
2374         /* Fan input pins may be used for alternative functions */
2375         data->has_fan &= ~sio_data->skip_fan;
2376
2377         /* Start monitoring */
2378         it87_write_value(data, IT87_REG_CONFIG,
2379                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2380                          | (update_vbat ? 0x41 : 0x01));
2381 }
2382
2383 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2384 {
2385         data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2386         if (has_newer_autopwm(data)) {
2387                 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2388                 data->pwm_duty[nr] = it87_read_value(data,
2389                                                      IT87_REG_PWM_DUTY(nr));
2390         } else {
2391                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
2392                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2393                 else                            /* Manual mode */
2394                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2395         }
2396
2397         if (has_old_autopwm(data)) {
2398                 int i;
2399
2400                 for (i = 0; i < 5 ; i++)
2401                         data->auto_temp[nr][i] = it87_read_value(data,
2402                                                 IT87_REG_AUTO_TEMP(nr, i));
2403                 for (i = 0; i < 3 ; i++)
2404                         data->auto_pwm[nr][i] = it87_read_value(data,
2405                                                 IT87_REG_AUTO_PWM(nr, i));
2406         }
2407 }
2408
2409 static struct it87_data *it87_update_device(struct device *dev)
2410 {
2411         struct it87_data *data = dev_get_drvdata(dev);
2412         int i;
2413
2414         mutex_lock(&data->update_lock);
2415
2416         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2417             || !data->valid) {
2418                 if (update_vbat) {
2419                         /*
2420                          * Cleared after each update, so reenable.  Value
2421                          * returned by this read will be previous value
2422                          */
2423                         it87_write_value(data, IT87_REG_CONFIG,
2424                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2425                 }
2426                 for (i = 0; i <= 7; i++) {
2427                         data->in[i][0] =
2428                                 it87_read_value(data, IT87_REG_VIN(i));
2429                         data->in[i][1] =
2430                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
2431                         data->in[i][2] =
2432                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
2433                 }
2434                 /* in8 (battery) has no limit registers */
2435                 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2436
2437                 for (i = 0; i < 5; i++) {
2438                         /* Skip disabled fans */
2439                         if (!(data->has_fan & (1 << i)))
2440                                 continue;
2441
2442                         data->fan[i][1] =
2443                                 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2444                         data->fan[i][0] = it87_read_value(data,
2445                                        IT87_REG_FAN[i]);
2446                         /* Add high byte if in 16-bit mode */
2447                         if (has_16bit_fans(data)) {
2448                                 data->fan[i][0] |= it87_read_value(data,
2449                                                 IT87_REG_FANX[i]) << 8;
2450                                 data->fan[i][1] |= it87_read_value(data,
2451                                                 IT87_REG_FANX_MIN[i]) << 8;
2452                         }
2453                 }
2454                 for (i = 0; i < 3; i++) {
2455                         if (!(data->has_temp & (1 << i)))
2456                                 continue;
2457                         data->temp[i][0] =
2458                                 it87_read_value(data, IT87_REG_TEMP(i));
2459                         data->temp[i][1] =
2460                                 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2461                         data->temp[i][2] =
2462                                 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2463                         if (has_temp_offset(data))
2464                                 data->temp[i][3] =
2465                                   it87_read_value(data,
2466                                                   IT87_REG_TEMP_OFFSET[i]);
2467                 }
2468
2469                 /* Newer chips don't have clock dividers */
2470                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2471                         i = it87_read_value(data, IT87_REG_FAN_DIV);
2472                         data->fan_div[0] = i & 0x07;
2473                         data->fan_div[1] = (i >> 3) & 0x07;
2474                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
2475                 }
2476
2477                 data->alarms =
2478                         it87_read_value(data, IT87_REG_ALARM1) |
2479                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2480                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
2481                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2482
2483                 data->fan_main_ctrl = it87_read_value(data,
2484                                 IT87_REG_FAN_MAIN_CTRL);
2485                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2486                 for (i = 0; i < 3; i++)
2487                         it87_update_pwm_ctrl(data, i);
2488
2489                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2490                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
2491                 /*
2492                  * The IT8705F does not have VID capability.
2493                  * The IT8718F and later don't use IT87_REG_VID for the
2494                  * same purpose.
2495                  */
2496                 if (data->type == it8712 || data->type == it8716) {
2497                         data->vid = it87_read_value(data, IT87_REG_VID);
2498                         /*
2499                          * The older IT8712F revisions had only 5 VID pins,
2500                          * but we assume it is always safe to read 6 bits.
2501                          */
2502                         data->vid &= 0x3f;
2503                 }
2504                 data->last_updated = jiffies;
2505                 data->valid = 1;
2506         }
2507
2508         mutex_unlock(&data->update_lock);
2509
2510         return data;
2511 }
2512
2513 static int __init it87_device_add(unsigned short address,
2514                                   const struct it87_sio_data *sio_data)
2515 {
2516         struct resource res = {
2517                 .start  = address + IT87_EC_OFFSET,
2518                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2519                 .name   = DRVNAME,
2520                 .flags  = IORESOURCE_IO,
2521         };
2522         int err;
2523
2524         err = acpi_check_resource_conflict(&res);
2525         if (err)
2526                 goto exit;
2527
2528         pdev = platform_device_alloc(DRVNAME, address);
2529         if (!pdev) {
2530                 err = -ENOMEM;
2531                 pr_err("Device allocation failed\n");
2532                 goto exit;
2533         }
2534
2535         err = platform_device_add_resources(pdev, &res, 1);
2536         if (err) {
2537                 pr_err("Device resource addition failed (%d)\n", err);
2538                 goto exit_device_put;
2539         }
2540
2541         err = platform_device_add_data(pdev, sio_data,
2542                                        sizeof(struct it87_sio_data));
2543         if (err) {
2544                 pr_err("Platform data allocation failed\n");
2545                 goto exit_device_put;
2546         }
2547
2548         err = platform_device_add(pdev);
2549         if (err) {
2550                 pr_err("Device addition failed (%d)\n", err);
2551                 goto exit_device_put;
2552         }
2553
2554         return 0;
2555
2556 exit_device_put:
2557         platform_device_put(pdev);
2558 exit:
2559         return err;
2560 }
2561
2562 static int __init sm_it87_init(void)
2563 {
2564         int err;
2565         unsigned short isa_address = 0;
2566         struct it87_sio_data sio_data;
2567
2568         memset(&sio_data, 0, sizeof(struct it87_sio_data));
2569         err = it87_find(&isa_address, &sio_data);
2570         if (err)
2571                 return err;
2572         err = platform_driver_register(&it87_driver);
2573         if (err)
2574                 return err;
2575
2576         err = it87_device_add(isa_address, &sio_data);
2577         if (err) {
2578                 platform_driver_unregister(&it87_driver);
2579                 return err;
2580         }
2581
2582         return 0;
2583 }
2584
2585 static void __exit sm_it87_exit(void)
2586 {
2587         platform_device_unregister(pdev);
2588         platform_driver_unregister(&it87_driver);
2589 }
2590
2591
2592 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>");
2593 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2594 module_param(update_vbat, bool, 0);
2595 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2596 module_param(fix_pwm_polarity, bool, 0);
2597 MODULE_PARM_DESC(fix_pwm_polarity,
2598                  "Force PWM polarity to active high (DANGEROUS)");
2599 MODULE_LICENSE("GPL");
2600
2601 module_init(sm_it87_init);
2602 module_exit(sm_it87_exit);