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 SENSORS_LIMIT(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 = SENSORS_LIMIT(rpm, 1, 1000000);
 400         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
 401                              254);
 402 }
 403
 404 static inline u16 FAN16_TO_REG(long rpm)
 405 {
 406         if (rpm == 0)
 407                 return 0xffff;
 408         return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 409 }
 410
 411 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 412                                 1350000 / ((val) * (div)))
 413 /* The divider is fixed to 2 in 16-bit mode */
 414 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 415                              1350000 / ((val) * 2))
 416
 417 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
 418                                         ((val) + 500) / 1000), -128, 127))
 419 #define TEMP_FROM_REG(val) ((val) * 1000)
 420
 421 static u8 pwm_to_reg(const struct it87_data *data, long val)
 422 {
 423         if (has_newer_autopwm(data))
 424                 return val;
 425         else
 426                 return val >> 1;
 427 }
 428
 429 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 430 {
 431         if (has_newer_autopwm(data))
 432                 return reg;
 433         else
 434                 return (reg & 0x7f) << 1;
 435 }
 436
 437
 438 static int DIV_TO_REG(int val)
 439 {
 440         int answer = 0;
 441         while (answer < 7 && (val >>= 1))
 442                 answer++;
 443         return answer;
 444 }
 445 #define DIV_FROM_REG(val) (1 << (val))
 446
 447 static const unsigned int pwm_freq[8] = {
 448         48000000 / 128,
 449         24000000 / 128,
 450         12000000 / 128,
 451         8000000 / 128,
 452         6000000 / 128,
 453         3000000 / 128,
 454         1500000 / 128,
 455         750000 / 128,
 456 };
 457
 458 static int it87_probe(struct platform_device *pdev);
 459 static int it87_remove(struct platform_device *pdev);
 460
 461 static int it87_read_value(struct it87_data *data, u8 reg);
 462 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
 463 static struct it87_data *it87_update_device(struct device *dev);
 464 static int it87_check_pwm(struct device *dev);
 465 static void it87_init_device(struct platform_device *pdev);
 466
 467
 468 static struct platform_driver it87_driver = {
 469         .driver = {
 470                 .owner  = THIS_MODULE,
 471                 .name   = DRVNAME,
 472         },
 473         .probe  = it87_probe,
 474         .remove = it87_remove,
 475 };
 476
 477 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 478                        char *buf)
 479 {
 480         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 481         int nr = sattr->nr;
 482         int index = sattr->index;
 483
 484         struct it87_data *data = it87_update_device(dev);
 485         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 486 }
 487
 488 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
 489                       const char *buf, size_t count)
 490 {
 491         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 492         int nr = sattr->nr;
 493         int index = sattr->index;
 494
 495         struct it87_data *data = dev_get_drvdata(dev);
 496         unsigned long val;
 497
 498         if (kstrtoul(buf, 10, &val) < 0)
 499                 return -EINVAL;
 500
 501         mutex_lock(&data->update_lock);
 502         data->in[nr][index] = in_to_reg(data, nr, val);
 503         it87_write_value(data,
 504                          index == 1 ? IT87_REG_VIN_MIN(nr)
 505                                     : IT87_REG_VIN_MAX(nr),
 506                          data->in[nr][index]);
 507         mutex_unlock(&data->update_lock);
 508         return count;
 509 }
 510
 511 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 512 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 513                             0, 1);
 514 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 515                             0, 2);
 516
 517 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 518 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 519                             1, 1);
 520 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 521                             1, 2);
 522
 523 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 524 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 525                             2, 1);
 526 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 527                             2, 2);
 528
 529 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 530 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 531                             3, 1);
 532 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 533                             3, 2);
 534
 535 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 536 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 537                             4, 1);
 538 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 539                             4, 2);
 540
 541 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 542 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 543                             5, 1);
 544 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 545                             5, 2);
 546
 547 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 548 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 549                             6, 1);
 550 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 551                             6, 2);
 552
 553 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 554 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 555                             7, 1);
 556 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 557                             7, 2);
 558
 559 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 560
 561 /* 3 temperatures */
 562 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 563                          char *buf)
 564 {
 565         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 566         int nr = sattr->nr;
 567         int index = sattr->index;
 568         struct it87_data *data = it87_update_device(dev);
 569
 570         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 571 }
 572
 573 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 574                         const char *buf, size_t count)
 575 {
 576         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 577         int nr = sattr->nr;
 578         int index = sattr->index;
 579         struct it87_data *data = dev_get_drvdata(dev);
 580         long val;
 581         u8 reg, regval;
 582
 583         if (kstrtol(buf, 10, &val) < 0)
 584                 return -EINVAL;
 585
 586         mutex_lock(&data->update_lock);
 587
 588         switch (index) {
 589         default:
 590         case 1:
 591                 reg = IT87_REG_TEMP_LOW(nr);
 592                 break;
 593         case 2:
 594                 reg = IT87_REG_TEMP_HIGH(nr);
 595                 break;
 596         case 3:
 597                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 598                 if (!(regval & 0x80)) {
 599                         regval |= 0x80;
 600                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 601                 }
 602                 data->valid = 0;
 603                 reg = IT87_REG_TEMP_OFFSET[nr];
 604                 break;
 605         }
 606
 607         data->temp[nr][index] = TEMP_TO_REG(val);
 608         it87_write_value(data, reg, data->temp[nr][index]);
 609         mutex_unlock(&data->update_lock);
 610         return count;
 611 }
 612
 613 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
 614 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 615                             0, 1);
 616 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 617                             0, 2);
 618 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
 619                             set_temp, 0, 3);
 620 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
 621 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 622                             1, 1);
 623 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 624                             1, 2);
 625 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
 626                             set_temp, 1, 3);
 627 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
 628 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 629                             2, 1);
 630 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 631                             2, 2);
 632 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
 633                             set_temp, 2, 3);
 634
 635 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
 636                               char *buf)
 637 {
 638         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 639         int nr = sensor_attr->index;
 640         struct it87_data *data = it87_update_device(dev);
 641         u8 reg = data->sensor;      /* In case value is updated while used */
 642         u8 extra = data->extra;
 643
 644         if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
 645             || (has_temp_old_peci(data, nr) && (extra & 0x80)))
 646                 return sprintf(buf, "6\n");  /* Intel PECI */
 647         if (reg & (1 << nr))
 648                 return sprintf(buf, "3\n");  /* thermal diode */
 649         if (reg & (8 << nr))
 650                 return sprintf(buf, "4\n");  /* thermistor */
 651         return sprintf(buf, "0\n");      /* disabled */
 652 }
 653
 654 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
 655                              const char *buf, size_t count)
 656 {
 657         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 658         int nr = sensor_attr->index;
 659
 660         struct it87_data *data = dev_get_drvdata(dev);
 661         long val;
 662         u8 reg, extra;
 663
 664         if (kstrtol(buf, 10, &val) < 0)
 665                 return -EINVAL;
 666
 667         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 668         reg &= ~(1 << nr);
 669         reg &= ~(8 << nr);
 670         if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
 671                 reg &= 0x3f;
 672         extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
 673         if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
 674                 extra &= 0x7f;
 675         if (val == 2) { /* backwards compatibility */
 676                 dev_warn(dev,
 677                          "Sensor type 2 is deprecated, please use 4 instead\n");
 678                 val = 4;
 679         }
 680         /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */
 681         if (val == 3)
 682                 reg |= 1 << nr;
 683         else if (val == 4)
 684                 reg |= 8 << nr;
 685         else if (has_temp_peci(data, nr) && val == 6)
 686                 reg |= (nr + 1) << 6;
 687         else if (has_temp_old_peci(data, nr) && val == 6)
 688                 extra |= 0x80;
 689         else if (val != 0)
 690                 return -EINVAL;
 691
 692         mutex_lock(&data->update_lock);
 693         data->sensor = reg;
 694         data->extra = extra;
 695         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
 696         if (has_temp_old_peci(data, nr))
 697                 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
 698         data->valid = 0;        /* Force cache refresh */
 699         mutex_unlock(&data->update_lock);
 700         return count;
 701 }
 702
 703 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
 704                           set_temp_type, 0);
 705 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
 706                           set_temp_type, 1);
 707 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
 708                           set_temp_type, 2);
 709
 710 /* 3 Fans */
 711
 712 static int pwm_mode(const struct it87_data *data, int nr)
 713 {
 714         int ctrl = data->fan_main_ctrl & (1 << nr);
 715
 716         if (ctrl == 0)                                  /* Full speed */
 717                 return 0;
 718         if (data->pwm_ctrl[nr] & 0x80)                  /* Automatic mode */
 719                 return 2;
 720         else                                            /* Manual mode */
 721                 return 1;
 722 }
 723
 724 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 725                         char *buf)
 726 {
 727         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 728         int nr = sattr->nr;
 729         int index = sattr->index;
 730         int speed;
 731         struct it87_data *data = it87_update_device(dev);
 732
 733         speed = has_16bit_fans(data) ?
 734                 FAN16_FROM_REG(data->fan[nr][index]) :
 735                 FAN_FROM_REG(data->fan[nr][index],
 736                              DIV_FROM_REG(data->fan_div[nr]));
 737         return sprintf(buf, "%d\n", speed);
 738 }
 739
 740 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 741                 char *buf)
 742 {
 743         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 744         int nr = sensor_attr->index;
 745
 746         struct it87_data *data = it87_update_device(dev);
 747         return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
 748 }
 749 static ssize_t show_pwm_enable(struct device *dev,
 750                 struct device_attribute *attr, char *buf)
 751 {
 752         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 753         int nr = sensor_attr->index;
 754
 755         struct it87_data *data = it87_update_device(dev);
 756         return sprintf(buf, "%d\n", pwm_mode(data, nr));
 757 }
 758 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 759                 char *buf)
 760 {
 761         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 762         int nr = sensor_attr->index;
 763
 764         struct it87_data *data = it87_update_device(dev);
 765         return sprintf(buf, "%d\n",
 766                        pwm_from_reg(data, data->pwm_duty[nr]));
 767 }
 768 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
 769                 char *buf)
 770 {
 771         struct it87_data *data = it87_update_device(dev);
 772         int index = (data->fan_ctl >> 4) & 0x07;
 773
 774         return sprintf(buf, "%u\n", pwm_freq[index]);
 775 }
 776
 777 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 778                        const char *buf, size_t count)
 779 {
 780         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 781         int nr = sattr->nr;
 782         int index = sattr->index;
 783
 784         struct it87_data *data = dev_get_drvdata(dev);
 785         long val;
 786         u8 reg;
 787
 788         if (kstrtol(buf, 10, &val) < 0)
 789                 return -EINVAL;
 790
 791         mutex_lock(&data->update_lock);
 792
 793         if (has_16bit_fans(data)) {
 794                 data->fan[nr][index] = FAN16_TO_REG(val);
 795                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 796                                  data->fan[nr][index] & 0xff);
 797                 it87_write_value(data, IT87_REG_FANX_MIN[nr],
 798                                  data->fan[nr][index] >> 8);
 799         } else {
 800                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
 801                 switch (nr) {
 802                 case 0:
 803                         data->fan_div[nr] = reg & 0x07;
 804                         break;
 805                 case 1:
 806                         data->fan_div[nr] = (reg >> 3) & 0x07;
 807                         break;
 808                 case 2:
 809                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
 810                         break;
 811                 }
 812                 data->fan[nr][index] =
 813                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 814                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 815                                  data->fan[nr][index]);
 816         }
 817
 818         mutex_unlock(&data->update_lock);
 819         return count;
 820 }
 821
 822 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 823                 const char *buf, size_t count)
 824 {
 825         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 826         int nr = sensor_attr->index;
 827
 828         struct it87_data *data = dev_get_drvdata(dev);
 829         unsigned long val;
 830         int min;
 831         u8 old;
 832
 833         if (kstrtoul(buf, 10, &val) < 0)
 834                 return -EINVAL;
 835
 836         mutex_lock(&data->update_lock);
 837         old = it87_read_value(data, IT87_REG_FAN_DIV);
 838
 839         /* Save fan min limit */
 840         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
 841
 842         switch (nr) {
 843         case 0:
 844         case 1:
 845                 data->fan_div[nr] = DIV_TO_REG(val);
 846                 break;
 847         case 2:
 848                 if (val < 8)
 849                         data->fan_div[nr] = 1;
 850                 else
 851                         data->fan_div[nr] = 3;
 852         }
 853         val = old & 0x80;
 854         val |= (data->fan_div[0] & 0x07);
 855         val |= (data->fan_div[1] & 0x07) << 3;
 856         if (data->fan_div[2] == 3)
 857                 val |= 0x1 << 6;
 858         it87_write_value(data, IT87_REG_FAN_DIV, val);
 859
 860         /* Restore fan min limit */
 861         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 862         it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
 863
 864         mutex_unlock(&data->update_lock);
 865         return count;
 866 }
 867
 868 /* Returns 0 if OK, -EINVAL otherwise */
 869 static int check_trip_points(struct device *dev, int nr)
 870 {
 871         const struct it87_data *data = dev_get_drvdata(dev);
 872         int i, err = 0;
 873
 874         if (has_old_autopwm(data)) {
 875                 for (i = 0; i < 3; i++) {
 876                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
 877                                 err = -EINVAL;
 878                 }
 879                 for (i = 0; i < 2; i++) {
 880                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
 881                                 err = -EINVAL;
 882                 }
 883         }
 884
 885         if (err) {
 886                 dev_err(dev,
 887                         "Inconsistent trip points, not switching to automatic mode\n");
 888                 dev_err(dev, "Adjust the trip points and try again\n");
 889         }
 890         return err;
 891 }
 892
 893 static ssize_t set_pwm_enable(struct device *dev,
 894                 struct device_attribute *attr, const char *buf, size_t count)
 895 {
 896         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 897         int nr = sensor_attr->index;
 898
 899         struct it87_data *data = dev_get_drvdata(dev);
 900         long val;
 901
 902         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
 903                 return -EINVAL;
 904
 905         /* Check trip points before switching to automatic mode */
 906         if (val == 2) {
 907                 if (check_trip_points(dev, nr) < 0)
 908                         return -EINVAL;
 909         }
 910
 911         mutex_lock(&data->update_lock);
 912
 913         if (val == 0) {
 914                 int tmp;
 915                 /* make sure the fan is on when in on/off mode */
 916                 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
 917                 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
 918                 /* set on/off mode */
 919                 data->fan_main_ctrl &= ~(1 << nr);
 920                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 921                                  data->fan_main_ctrl);
 922         } else {
 923                 if (val == 1)                           /* Manual mode */
 924                         data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
 925                                              data->pwm_temp_map[nr] :
 926                                              data->pwm_duty[nr];
 927                 else                                    /* Automatic mode */
 928                         data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
 929                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
 930                 /* set SmartGuardian mode */
 931                 data->fan_main_ctrl |= (1 << nr);
 932                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 933                                  data->fan_main_ctrl);
 934         }
 935
 936         mutex_unlock(&data->update_lock);
 937         return count;
 938 }
 939 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 940                 const char *buf, size_t count)
 941 {
 942         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 943         int nr = sensor_attr->index;
 944
 945         struct it87_data *data = dev_get_drvdata(dev);
 946         long val;
 947
 948         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
 949                 return -EINVAL;
 950
 951         mutex_lock(&data->update_lock);
 952         if (has_newer_autopwm(data)) {
 953                 /*
 954                  * If we are in automatic mode, the PWM duty cycle register
 955                  * is read-only so we can't write the value.
 956                  */
 957                 if (data->pwm_ctrl[nr] & 0x80) {
 958                         mutex_unlock(&data->update_lock);
 959                         return -EBUSY;
 960                 }
 961                 data->pwm_duty[nr] = pwm_to_reg(data, val);
 962                 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
 963                                  data->pwm_duty[nr]);
 964         } else {
 965                 data->pwm_duty[nr] = pwm_to_reg(data, val);
 966                 /*
 967                  * If we are in manual mode, write the duty cycle immediately;
 968                  * otherwise, just store it for later use.
 969                  */
 970                 if (!(data->pwm_ctrl[nr] & 0x80)) {
 971                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
 972                         it87_write_value(data, IT87_REG_PWM(nr),
 973                                          data->pwm_ctrl[nr]);
 974                 }
 975         }
 976         mutex_unlock(&data->update_lock);
 977         return count;
 978 }
 979 static ssize_t set_pwm_freq(struct device *dev,
 980                 struct device_attribute *attr, const char *buf, size_t count)
 981 {
 982         struct it87_data *data = dev_get_drvdata(dev);
 983         unsigned long val;
 984         int i;
 985
 986         if (kstrtoul(buf, 10, &val) < 0)
 987                 return -EINVAL;
 988
 989         /* Search for the nearest available frequency */
 990         for (i = 0; i < 7; i++) {
 991                 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
 992                         break;
 993         }
 994
 995         mutex_lock(&data->update_lock);
 996         data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
 997         data->fan_ctl |= i << 4;
 998         it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
 999         mutex_unlock(&data->update_lock);
1000
1001         return count;
1002 }
1003 static ssize_t show_pwm_temp_map(struct device *dev,
1004                 struct device_attribute *attr, char *buf)
1005 {
1006         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1007         int nr = sensor_attr->index;
1008
1009         struct it87_data *data = it87_update_device(dev);
1010         int map;
1011
1012         if (data->pwm_temp_map[nr] < 3)
1013                 map = 1 << data->pwm_temp_map[nr];
1014         else
1015                 map = 0;                        /* Should never happen */
1016         return sprintf(buf, "%d\n", map);
1017 }
1018 static ssize_t set_pwm_temp_map(struct device *dev,
1019                 struct device_attribute *attr, const char *buf, size_t count)
1020 {
1021         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1022         int nr = sensor_attr->index;
1023
1024         struct it87_data *data = dev_get_drvdata(dev);
1025         long val;
1026         u8 reg;
1027
1028         /*
1029          * This check can go away if we ever support automatic fan speed
1030          * control on newer chips.
1031          */
1032         if (!has_old_autopwm(data)) {
1033                 dev_notice(dev, "Mapping change disabled for safety reasons\n");
1034                 return -EINVAL;
1035         }
1036
1037         if (kstrtol(buf, 10, &val) < 0)
1038                 return -EINVAL;
1039
1040         switch (val) {
1041         case (1 << 0):
1042                 reg = 0x00;
1043                 break;
1044         case (1 << 1):
1045                 reg = 0x01;
1046                 break;
1047         case (1 << 2):
1048                 reg = 0x02;
1049                 break;
1050         default:
1051                 return -EINVAL;
1052         }
1053
1054         mutex_lock(&data->update_lock);
1055         data->pwm_temp_map[nr] = reg;
1056         /*
1057          * If we are in automatic mode, write the temp mapping immediately;
1058          * otherwise, just store it for later use.
1059          */
1060         if (data->pwm_ctrl[nr] & 0x80) {
1061                 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1062                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1063         }
1064         mutex_unlock(&data->update_lock);
1065         return count;
1066 }
1067
1068 static ssize_t show_auto_pwm(struct device *dev,
1069                 struct device_attribute *attr, char *buf)
1070 {
1071         struct it87_data *data = it87_update_device(dev);
1072         struct sensor_device_attribute_2 *sensor_attr =
1073                         to_sensor_dev_attr_2(attr);
1074         int nr = sensor_attr->nr;
1075         int point = sensor_attr->index;
1076
1077         return sprintf(buf, "%d\n",
1078                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1079 }
1080
1081 static ssize_t set_auto_pwm(struct device *dev,
1082                 struct device_attribute *attr, const char *buf, size_t count)
1083 {
1084         struct it87_data *data = dev_get_drvdata(dev);
1085         struct sensor_device_attribute_2 *sensor_attr =
1086                         to_sensor_dev_attr_2(attr);
1087         int nr = sensor_attr->nr;
1088         int point = sensor_attr->index;
1089         long val;
1090
1091         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1092                 return -EINVAL;
1093
1094         mutex_lock(&data->update_lock);
1095         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1096         it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1097                          data->auto_pwm[nr][point]);
1098         mutex_unlock(&data->update_lock);
1099         return count;
1100 }
1101
1102 static ssize_t show_auto_temp(struct device *dev,
1103                 struct device_attribute *attr, char *buf)
1104 {
1105         struct it87_data *data = it87_update_device(dev);
1106         struct sensor_device_attribute_2 *sensor_attr =
1107                         to_sensor_dev_attr_2(attr);
1108         int nr = sensor_attr->nr;
1109         int point = sensor_attr->index;
1110
1111         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1112 }
1113
1114 static ssize_t set_auto_temp(struct device *dev,
1115                 struct device_attribute *attr, const char *buf, size_t count)
1116 {
1117         struct it87_data *data = dev_get_drvdata(dev);
1118         struct sensor_device_attribute_2 *sensor_attr =
1119                         to_sensor_dev_attr_2(attr);
1120         int nr = sensor_attr->nr;
1121         int point = sensor_attr->index;
1122         long val;
1123
1124         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1125                 return -EINVAL;
1126
1127         mutex_lock(&data->update_lock);
1128         data->auto_temp[nr][point] = TEMP_TO_REG(val);
1129         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1130                          data->auto_temp[nr][point]);
1131         mutex_unlock(&data->update_lock);
1132         return count;
1133 }
1134
1135 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1136 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1137                             0, 1);
1138 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1139                           set_fan_div, 0);
1140
1141 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1142 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1143                             1, 1);
1144 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1145                           set_fan_div, 1);
1146
1147 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1148 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1149                             2, 1);
1150 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1151                           set_fan_div, 2);
1152
1153 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1154 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1155                             3, 1);
1156
1157 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1158 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1159                             4, 1);
1160
1161 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1162                           show_pwm_enable, set_pwm_enable, 0);
1163 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1164 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1165 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1166                           show_pwm_temp_map, set_pwm_temp_map, 0);
1167 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1168                             show_auto_pwm, set_auto_pwm, 0, 0);
1169 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1170                             show_auto_pwm, set_auto_pwm, 0, 1);
1171 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1172                             show_auto_pwm, set_auto_pwm, 0, 2);
1173 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1174                             show_auto_pwm, NULL, 0, 3);
1175 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1176                             show_auto_temp, set_auto_temp, 0, 1);
1177 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1178                             show_auto_temp, set_auto_temp, 0, 0);
1179 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1180                             show_auto_temp, set_auto_temp, 0, 2);
1181 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1182                             show_auto_temp, set_auto_temp, 0, 3);
1183 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1184                             show_auto_temp, set_auto_temp, 0, 4);
1185
1186 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1187                           show_pwm_enable, set_pwm_enable, 1);
1188 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1189 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1190 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1191                           show_pwm_temp_map, set_pwm_temp_map, 1);
1192 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1193                             show_auto_pwm, set_auto_pwm, 1, 0);
1194 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1195                             show_auto_pwm, set_auto_pwm, 1, 1);
1196 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1197                             show_auto_pwm, set_auto_pwm, 1, 2);
1198 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1199                             show_auto_pwm, NULL, 1, 3);
1200 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1201                             show_auto_temp, set_auto_temp, 1, 1);
1202 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1203                             show_auto_temp, set_auto_temp, 1, 0);
1204 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1205                             show_auto_temp, set_auto_temp, 1, 2);
1206 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1207                             show_auto_temp, set_auto_temp, 1, 3);
1208 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1209                             show_auto_temp, set_auto_temp, 1, 4);
1210
1211 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1212                           show_pwm_enable, set_pwm_enable, 2);
1213 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1214 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1215 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1216                           show_pwm_temp_map, set_pwm_temp_map, 2);
1217 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1218                             show_auto_pwm, set_auto_pwm, 2, 0);
1219 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1220                             show_auto_pwm, set_auto_pwm, 2, 1);
1221 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1222                             show_auto_pwm, set_auto_pwm, 2, 2);
1223 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1224                             show_auto_pwm, NULL, 2, 3);
1225 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1226                             show_auto_temp, set_auto_temp, 2, 1);
1227 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1228                             show_auto_temp, set_auto_temp, 2, 0);
1229 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1230                             show_auto_temp, set_auto_temp, 2, 2);
1231 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1232                             show_auto_temp, set_auto_temp, 2, 3);
1233 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1234                             show_auto_temp, set_auto_temp, 2, 4);
1235
1236 /* Alarms */
1237 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1238                 char *buf)
1239 {
1240         struct it87_data *data = it87_update_device(dev);
1241         return sprintf(buf, "%u\n", data->alarms);
1242 }
1243 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1244
1245 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1246                 char *buf)
1247 {
1248         int bitnr = to_sensor_dev_attr(attr)->index;
1249         struct it87_data *data = it87_update_device(dev);
1250         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1251 }
1252
1253 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1254                 *attr, const char *buf, size_t count)
1255 {
1256         struct it87_data *data = dev_get_drvdata(dev);
1257         long val;
1258         int config;
1259
1260         if (kstrtol(buf, 10, &val) < 0 || val != 0)
1261                 return -EINVAL;
1262
1263         mutex_lock(&data->update_lock);
1264         config = it87_read_value(data, IT87_REG_CONFIG);
1265         if (config < 0) {
1266                 count = config;
1267         } else {
1268                 config |= 1 << 5;
1269                 it87_write_value(data, IT87_REG_CONFIG, config);
1270                 /* Invalidate cache to force re-read */
1271                 data->valid = 0;
1272         }
1273         mutex_unlock(&data->update_lock);
1274
1275         return count;
1276 }
1277
1278 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1279 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1280 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1281 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1282 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1283 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1284 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1285 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1286 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1287 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1288 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1289 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1290 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1291 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1292 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1293 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1294 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1295                           show_alarm, clear_intrusion, 4);
1296
1297 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1298                 char *buf)
1299 {
1300         int bitnr = to_sensor_dev_attr(attr)->index;
1301         struct it87_data *data = it87_update_device(dev);
1302         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1303 }
1304 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1305                 const char *buf, size_t count)
1306 {
1307         int bitnr = to_sensor_dev_attr(attr)->index;
1308         struct it87_data *data = dev_get_drvdata(dev);
1309         long val;
1310
1311         if (kstrtol(buf, 10, &val) < 0
1312          || (val != 0 && val != 1))
1313                 return -EINVAL;
1314
1315         mutex_lock(&data->update_lock);
1316         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1317         if (val)
1318                 data->beeps |= (1 << bitnr);
1319         else
1320                 data->beeps &= ~(1 << bitnr);
1321         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1322         mutex_unlock(&data->update_lock);
1323         return count;
1324 }
1325
1326 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1327                           show_beep, set_beep, 1);
1328 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1329 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1330 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1331 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1332 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1333 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1334 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1335 /* fanX_beep writability is set later */
1336 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1337 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1338 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1339 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1340 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1341 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1342                           show_beep, set_beep, 2);
1343 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1344 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1345
1346 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1347                 char *buf)
1348 {
1349         struct it87_data *data = dev_get_drvdata(dev);
1350         return sprintf(buf, "%u\n", data->vrm);
1351 }
1352 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1353                 const char *buf, size_t count)
1354 {
1355         struct it87_data *data = dev_get_drvdata(dev);
1356         unsigned long val;
1357
1358         if (kstrtoul(buf, 10, &val) < 0)
1359                 return -EINVAL;
1360
1361         data->vrm = val;
1362
1363         return count;
1364 }
1365 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1366
1367 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1368                 char *buf)
1369 {
1370         struct it87_data *data = it87_update_device(dev);
1371         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1372 }
1373 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1374
1375 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1376                 char *buf)
1377 {
1378         static const char * const labels[] = {
1379                 "+5V",
1380                 "5VSB",
1381                 "Vbat",
1382         };
1383         static const char * const labels_it8721[] = {
1384                 "+3.3V",
1385                 "3VSB",
1386                 "Vbat",
1387         };
1388         struct it87_data *data = dev_get_drvdata(dev);
1389         int nr = to_sensor_dev_attr(attr)->index;
1390
1391         return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1392                                                        : labels[nr]);
1393 }
1394 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1395 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1396 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1397
1398 static ssize_t show_name(struct device *dev, struct device_attribute
1399                          *devattr, char *buf)
1400 {
1401         struct it87_data *data = dev_get_drvdata(dev);
1402         return sprintf(buf, "%s\n", data->name);
1403 }
1404 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1405
1406 static struct attribute *it87_attributes_in[9][5] = {
1407 {
1408         &sensor_dev_attr_in0_input.dev_attr.attr,
1409         &sensor_dev_attr_in0_min.dev_attr.attr,
1410         &sensor_dev_attr_in0_max.dev_attr.attr,
1411         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1412         NULL
1413 }, {
1414         &sensor_dev_attr_in1_input.dev_attr.attr,
1415         &sensor_dev_attr_in1_min.dev_attr.attr,
1416         &sensor_dev_attr_in1_max.dev_attr.attr,
1417         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1418         NULL
1419 }, {
1420         &sensor_dev_attr_in2_input.dev_attr.attr,
1421         &sensor_dev_attr_in2_min.dev_attr.attr,
1422         &sensor_dev_attr_in2_max.dev_attr.attr,
1423         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1424         NULL
1425 }, {
1426         &sensor_dev_attr_in3_input.dev_attr.attr,
1427         &sensor_dev_attr_in3_min.dev_attr.attr,
1428         &sensor_dev_attr_in3_max.dev_attr.attr,
1429         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1430         NULL
1431 }, {
1432         &sensor_dev_attr_in4_input.dev_attr.attr,
1433         &sensor_dev_attr_in4_min.dev_attr.attr,
1434         &sensor_dev_attr_in4_max.dev_attr.attr,
1435         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1436         NULL
1437 }, {
1438         &sensor_dev_attr_in5_input.dev_attr.attr,
1439         &sensor_dev_attr_in5_min.dev_attr.attr,
1440         &sensor_dev_attr_in5_max.dev_attr.attr,
1441         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1442         NULL
1443 }, {
1444         &sensor_dev_attr_in6_input.dev_attr.attr,
1445         &sensor_dev_attr_in6_min.dev_attr.attr,
1446         &sensor_dev_attr_in6_max.dev_attr.attr,
1447         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1448         NULL
1449 }, {
1450         &sensor_dev_attr_in7_input.dev_attr.attr,
1451         &sensor_dev_attr_in7_min.dev_attr.attr,
1452         &sensor_dev_attr_in7_max.dev_attr.attr,
1453         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1454         NULL
1455 }, {
1456         &sensor_dev_attr_in8_input.dev_attr.attr,
1457         NULL
1458 } };
1459
1460 static const struct attribute_group it87_group_in[9] = {
1461         { .attrs = it87_attributes_in[0] },
1462         { .attrs = it87_attributes_in[1] },
1463         { .attrs = it87_attributes_in[2] },
1464         { .attrs = it87_attributes_in[3] },
1465         { .attrs = it87_attributes_in[4] },
1466         { .attrs = it87_attributes_in[5] },
1467         { .attrs = it87_attributes_in[6] },
1468         { .attrs = it87_attributes_in[7] },
1469         { .attrs = it87_attributes_in[8] },
1470 };
1471
1472 static struct attribute *it87_attributes_temp[3][6] = {
1473 {
1474         &sensor_dev_attr_temp1_input.dev_attr.attr,
1475         &sensor_dev_attr_temp1_max.dev_attr.attr,
1476         &sensor_dev_attr_temp1_min.dev_attr.attr,
1477         &sensor_dev_attr_temp1_type.dev_attr.attr,
1478         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1479         NULL
1480 } , {
1481         &sensor_dev_attr_temp2_input.dev_attr.attr,
1482         &sensor_dev_attr_temp2_max.dev_attr.attr,
1483         &sensor_dev_attr_temp2_min.dev_attr.attr,
1484         &sensor_dev_attr_temp2_type.dev_attr.attr,
1485         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1486         NULL
1487 } , {
1488         &sensor_dev_attr_temp3_input.dev_attr.attr,
1489         &sensor_dev_attr_temp3_max.dev_attr.attr,
1490         &sensor_dev_attr_temp3_min.dev_attr.attr,
1491         &sensor_dev_attr_temp3_type.dev_attr.attr,
1492         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1493         NULL
1494 } };
1495
1496 static const struct attribute_group it87_group_temp[3] = {
1497         { .attrs = it87_attributes_temp[0] },
1498         { .attrs = it87_attributes_temp[1] },
1499         { .attrs = it87_attributes_temp[2] },
1500 };
1501
1502 static struct attribute *it87_attributes_temp_offset[] = {
1503         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1504         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1505         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1506 };
1507
1508 static struct attribute *it87_attributes[] = {
1509         &dev_attr_alarms.attr,
1510         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1511         &dev_attr_name.attr,
1512         NULL
1513 };
1514
1515 static const struct attribute_group it87_group = {
1516         .attrs = it87_attributes,
1517 };
1518
1519 static struct attribute *it87_attributes_in_beep[] = {
1520         &sensor_dev_attr_in0_beep.dev_attr.attr,
1521         &sensor_dev_attr_in1_beep.dev_attr.attr,
1522         &sensor_dev_attr_in2_beep.dev_attr.attr,
1523         &sensor_dev_attr_in3_beep.dev_attr.attr,
1524         &sensor_dev_attr_in4_beep.dev_attr.attr,
1525         &sensor_dev_attr_in5_beep.dev_attr.attr,
1526         &sensor_dev_attr_in6_beep.dev_attr.attr,
1527         &sensor_dev_attr_in7_beep.dev_attr.attr,
1528         NULL
1529 };
1530
1531 static struct attribute *it87_attributes_temp_beep[] = {
1532         &sensor_dev_attr_temp1_beep.dev_attr.attr,
1533         &sensor_dev_attr_temp2_beep.dev_attr.attr,
1534         &sensor_dev_attr_temp3_beep.dev_attr.attr,
1535 };
1536
1537 static struct attribute *it87_attributes_fan[5][3+1] = { {
1538         &sensor_dev_attr_fan1_input.dev_attr.attr,
1539         &sensor_dev_attr_fan1_min.dev_attr.attr,
1540         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1541         NULL
1542 }, {
1543         &sensor_dev_attr_fan2_input.dev_attr.attr,
1544         &sensor_dev_attr_fan2_min.dev_attr.attr,
1545         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1546         NULL
1547 }, {
1548         &sensor_dev_attr_fan3_input.dev_attr.attr,
1549         &sensor_dev_attr_fan3_min.dev_attr.attr,
1550         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1551         NULL
1552 }, {
1553         &sensor_dev_attr_fan4_input.dev_attr.attr,
1554         &sensor_dev_attr_fan4_min.dev_attr.attr,
1555         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1556         NULL
1557 }, {
1558         &sensor_dev_attr_fan5_input.dev_attr.attr,
1559         &sensor_dev_attr_fan5_min.dev_attr.attr,
1560         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1561         NULL
1562 } };
1563
1564 static const struct attribute_group it87_group_fan[5] = {
1565         { .attrs = it87_attributes_fan[0] },
1566         { .attrs = it87_attributes_fan[1] },
1567         { .attrs = it87_attributes_fan[2] },
1568         { .attrs = it87_attributes_fan[3] },
1569         { .attrs = it87_attributes_fan[4] },
1570 };
1571
1572 static const struct attribute *it87_attributes_fan_div[] = {
1573         &sensor_dev_attr_fan1_div.dev_attr.attr,
1574         &sensor_dev_attr_fan2_div.dev_attr.attr,
1575         &sensor_dev_attr_fan3_div.dev_attr.attr,
1576 };
1577
1578 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1579         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1580         &sensor_dev_attr_pwm1.dev_attr.attr,
1581         &dev_attr_pwm1_freq.attr,
1582         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1583         NULL
1584 }, {
1585         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1586         &sensor_dev_attr_pwm2.dev_attr.attr,
1587         &dev_attr_pwm2_freq.attr,
1588         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1589         NULL
1590 }, {
1591         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1592         &sensor_dev_attr_pwm3.dev_attr.attr,
1593         &dev_attr_pwm3_freq.attr,
1594         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1595         NULL
1596 } };
1597
1598 static const struct attribute_group it87_group_pwm[3] = {
1599         { .attrs = it87_attributes_pwm[0] },
1600         { .attrs = it87_attributes_pwm[1] },
1601         { .attrs = it87_attributes_pwm[2] },
1602 };
1603
1604 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1605         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1606         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1607         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1608         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1609         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1610         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1611         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1612         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1613         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1614         NULL
1615 }, {
1616         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1617         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1618         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1619         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1620         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1621         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1622         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1623         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1624         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1625         NULL
1626 }, {
1627         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1628         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1629         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1630         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1631         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1632         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1633         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1634         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1635         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1636         NULL
1637 } };
1638
1639 static const struct attribute_group it87_group_autopwm[3] = {
1640         { .attrs = it87_attributes_autopwm[0] },
1641         { .attrs = it87_attributes_autopwm[1] },
1642         { .attrs = it87_attributes_autopwm[2] },
1643 };
1644
1645 static struct attribute *it87_attributes_fan_beep[] = {
1646         &sensor_dev_attr_fan1_beep.dev_attr.attr,
1647         &sensor_dev_attr_fan2_beep.dev_attr.attr,
1648         &sensor_dev_attr_fan3_beep.dev_attr.attr,
1649         &sensor_dev_attr_fan4_beep.dev_attr.attr,
1650         &sensor_dev_attr_fan5_beep.dev_attr.attr,
1651 };
1652
1653 static struct attribute *it87_attributes_vid[] = {
1654         &dev_attr_vrm.attr,
1655         &dev_attr_cpu0_vid.attr,
1656         NULL
1657 };
1658
1659 static const struct attribute_group it87_group_vid = {
1660         .attrs = it87_attributes_vid,
1661 };
1662
1663 static struct attribute *it87_attributes_label[] = {
1664         &sensor_dev_attr_in3_label.dev_attr.attr,
1665         &sensor_dev_attr_in7_label.dev_attr.attr,
1666         &sensor_dev_attr_in8_label.dev_attr.attr,
1667         NULL
1668 };
1669
1670 static const struct attribute_group it87_group_label = {
1671         .attrs = it87_attributes_label,
1672 };
1673
1674 /* SuperIO detection - will change isa_address if a chip is found */
1675 static int __init it87_find(unsigned short *address,
1676         struct it87_sio_data *sio_data)
1677 {
1678         int err;
1679         u16 chip_type;
1680         const char *board_vendor, *board_name;
1681
1682         err = superio_enter();
1683         if (err)
1684                 return err;
1685
1686         err = -ENODEV;
1687         chip_type = force_id ? force_id : superio_inw(DEVID);
1688
1689         switch (chip_type) {
1690         case IT8705F_DEVID:
1691                 sio_data->type = it87;
1692                 break;
1693         case IT8712F_DEVID:
1694                 sio_data->type = it8712;
1695                 break;
1696         case IT8716F_DEVID:
1697         case IT8726F_DEVID:
1698                 sio_data->type = it8716;
1699                 break;
1700         case IT8718F_DEVID:
1701                 sio_data->type = it8718;
1702                 break;
1703         case IT8720F_DEVID:
1704                 sio_data->type = it8720;
1705                 break;
1706         case IT8721F_DEVID:
1707                 sio_data->type = it8721;
1708                 break;
1709         case IT8728F_DEVID:
1710                 sio_data->type = it8728;
1711                 break;
1712         case IT8782F_DEVID:
1713                 sio_data->type = it8782;
1714                 break;
1715         case IT8783E_DEVID:
1716                 sio_data->type = it8783;
1717                 break;
1718         case 0xffff:    /* No device at all */
1719                 goto exit;
1720         default:
1721                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1722                 goto exit;
1723         }
1724
1725         superio_select(PME);
1726         if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1727                 pr_info("Device not activated, skipping\n");
1728                 goto exit;
1729         }
1730
1731         *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1732         if (*address == 0) {
1733                 pr_info("Base address not set, skipping\n");
1734                 goto exit;
1735         }
1736
1737         err = 0;
1738         sio_data->revision = superio_inb(DEVREV) & 0x0f;
1739         pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1740                 chip_type, *address, sio_data->revision);
1741
1742         /* in8 (Vbat) is always internal */
1743         sio_data->internal = (1 << 2);
1744
1745         /* Read GPIO config and VID value from LDN 7 (GPIO) */
1746         if (sio_data->type == it87) {
1747                 /* The IT8705F doesn't have VID pins at all */
1748                 sio_data->skip_vid = 1;
1749
1750                 /* The IT8705F has a different LD number for GPIO */
1751                 superio_select(5);
1752                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1753         } else if (sio_data->type == it8783) {
1754                 int reg25, reg27, reg2A, reg2C, regEF;
1755
1756                 sio_data->skip_vid = 1; /* No VID */
1757
1758                 superio_select(GPIO);
1759
1760                 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1761                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1762                 reg2A = superio_inb(IT87_SIO_PINX1_REG);
1763                 reg2C = superio_inb(IT87_SIO_PINX2_REG);
1764                 regEF = superio_inb(IT87_SIO_SPI_REG);
1765
1766                 /* Check if fan3 is there or not */
1767                 if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
1768                         sio_data->skip_fan |= (1 << 2);
1769                 if ((reg25 & (1 << 4))
1770                     || (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
1771                         sio_data->skip_pwm |= (1 << 2);
1772
1773                 /* Check if fan2 is there or not */
1774                 if (reg27 & (1 << 7))
1775                         sio_data->skip_fan |= (1 << 1);
1776                 if (reg27 & (1 << 3))
1777                         sio_data->skip_pwm |= (1 << 1);
1778
1779                 /* VIN5 */
1780                 if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
1781                         sio_data->skip_in |= (1 << 5); /* No VIN5 */
1782
1783                 /* VIN6 */
1784                 if (reg27 & (1 << 1))
1785                         sio_data->skip_in |= (1 << 6); /* No VIN6 */
1786
1787                 /*
1788                  * VIN7
1789                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1790                  */
1791                 if (reg27 & (1 << 2)) {
1792                         /*
1793                          * The data sheet is a bit unclear regarding the
1794                          * internal voltage divider for VCCH5V. It says
1795                          * "This bit enables and switches VIN7 (pin 91) to the
1796                          * internal voltage divider for VCCH5V".
1797                          * This is different to other chips, where the internal
1798                          * voltage divider would connect VIN7 to an internal
1799                          * voltage source. Maybe that is the case here as well.
1800                          *
1801                          * Since we don't know for sure, re-route it if that is
1802                          * not the case, and ask the user to report if the
1803                          * resulting voltage is sane.
1804                          */
1805                         if (!(reg2C & (1 << 1))) {
1806                                 reg2C |= (1 << 1);
1807                                 superio_outb(IT87_SIO_PINX2_REG, reg2C);
1808                                 pr_notice("Routing internal VCCH5V to in7.\n");
1809                         }
1810                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1811                         pr_notice("Please report if it displays a reasonable voltage.\n");
1812                 }
1813
1814                 if (reg2C & (1 << 0))
1815                         sio_data->internal |= (1 << 0);
1816                 if (reg2C & (1 << 1))
1817                         sio_data->internal |= (1 << 1);
1818
1819                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1820
1821         } else {
1822                 int reg;
1823                 bool uart6;
1824
1825                 superio_select(GPIO);
1826
1827                 reg = superio_inb(IT87_SIO_GPIO3_REG);
1828                 if (sio_data->type == it8721 || sio_data->type == it8728 ||
1829                     sio_data->type == it8782) {
1830                         /*
1831                          * IT8721F/IT8758E, and IT8782F don't have VID pins
1832                          * at all, not sure about the IT8728F.
1833                          */
1834                         sio_data->skip_vid = 1;
1835                 } else {
1836                         /* We need at least 4 VID pins */
1837                         if (reg & 0x0f) {
1838                                 pr_info("VID is disabled (pins used for GPIO)\n");
1839                                 sio_data->skip_vid = 1;
1840                         }
1841                 }
1842
1843                 /* Check if fan3 is there or not */
1844                 if (reg & (1 << 6))
1845                         sio_data->skip_pwm |= (1 << 2);
1846                 if (reg & (1 << 7))
1847                         sio_data->skip_fan |= (1 << 2);
1848
1849                 /* Check if fan2 is there or not */
1850                 reg = superio_inb(IT87_SIO_GPIO5_REG);
1851                 if (reg & (1 << 1))
1852                         sio_data->skip_pwm |= (1 << 1);
1853                 if (reg & (1 << 2))
1854                         sio_data->skip_fan |= (1 << 1);
1855
1856                 if ((sio_data->type == it8718 || sio_data->type == it8720)
1857                  && !(sio_data->skip_vid))
1858                         sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1859
1860                 reg = superio_inb(IT87_SIO_PINX2_REG);
1861
1862                 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1863
1864                 /*
1865                  * The IT8720F has no VIN7 pin, so VCCH should always be
1866                  * routed internally to VIN7 with an internal divider.
1867                  * Curiously, there still is a configuration bit to control
1868                  * this, which means it can be set incorrectly. And even
1869                  * more curiously, many boards out there are improperly
1870                  * configured, even though the IT8720F datasheet claims
1871                  * that the internal routing of VCCH to VIN7 is the default
1872                  * setting. So we force the internal routing in this case.
1873                  *
1874                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1875                  * If UART6 is enabled, re-route VIN7 to the internal divider
1876                  * if that is not already the case.
1877                  */
1878                 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1879                         reg |= (1 << 1);
1880                         superio_outb(IT87_SIO_PINX2_REG, reg);
1881                         pr_notice("Routing internal VCCH to in7\n");
1882                 }
1883                 if (reg & (1 << 0))
1884                         sio_data->internal |= (1 << 0);
1885                 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1886                     sio_data->type == it8728)
1887                         sio_data->internal |= (1 << 1);
1888
1889                 /*
1890                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1891                  * While VIN7 can be routed to the internal voltage divider,
1892                  * VIN5 and VIN6 are not available if UART6 is enabled.
1893                  *
1894                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1895                  * is the temperature source. Since we can not read the
1896                  * temperature source here, skip_temp is preliminary.
1897                  */
1898                 if (uart6) {
1899                         sio_data->skip_in |= (1 << 5) | (1 << 6);
1900                         sio_data->skip_temp |= (1 << 2);
1901                 }
1902
1903                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1904         }
1905         if (sio_data->beep_pin)
1906                 pr_info("Beeping is supported\n");
1907
1908         /* Disable specific features based on DMI strings */
1909         board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1910         board_name = dmi_get_system_info(DMI_BOARD_NAME);
1911         if (board_vendor && board_name) {
1912                 if (strcmp(board_vendor, "nVIDIA") == 0
1913                  && strcmp(board_name, "FN68PT") == 0) {
1914                         /*
1915                          * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1916                          * connected to a fan, but to something else. One user
1917                          * has reported instant system power-off when changing
1918                          * the PWM2 duty cycle, so we disable it.
1919                          * I use the board name string as the trigger in case
1920                          * the same board is ever used in other systems.
1921                          */
1922                         pr_info("Disabling pwm2 due to hardware constraints\n");
1923                         sio_data->skip_pwm = (1 << 1);
1924                 }
1925         }
1926
1927 exit:
1928         superio_exit();
1929         return err;
1930 }
1931
1932 static void it87_remove_files(struct device *dev)
1933 {
1934         struct it87_data *data = platform_get_drvdata(pdev);
1935         struct it87_sio_data *sio_data = dev->platform_data;
1936         int i;
1937
1938         sysfs_remove_group(&dev->kobj, &it87_group);
1939         for (i = 0; i < 9; i++) {
1940                 if (sio_data->skip_in & (1 << i))
1941                         continue;
1942                 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
1943                 if (it87_attributes_in_beep[i])
1944                         sysfs_remove_file(&dev->kobj,
1945                                           it87_attributes_in_beep[i]);
1946         }
1947         for (i = 0; i < 3; i++) {
1948                 if (!(data->has_temp & (1 << i)))
1949                         continue;
1950                 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
1951                 if (has_temp_offset(data))
1952                         sysfs_remove_file(&dev->kobj,
1953                                           it87_attributes_temp_offset[i]);
1954                 if (sio_data->beep_pin)
1955                         sysfs_remove_file(&dev->kobj,
1956                                           it87_attributes_temp_beep[i]);
1957         }
1958         for (i = 0; i < 5; i++) {
1959                 if (!(data->has_fan & (1 << i)))
1960                         continue;
1961                 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
1962                 if (sio_data->beep_pin)
1963                         sysfs_remove_file(&dev->kobj,
1964                                           it87_attributes_fan_beep[i]);
1965                 if (i < 3 && !has_16bit_fans(data))
1966                         sysfs_remove_file(&dev->kobj,
1967                                           it87_attributes_fan_div[i]);
1968         }
1969         for (i = 0; i < 3; i++) {
1970                 if (sio_data->skip_pwm & (1 << 0))
1971                         continue;
1972                 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
1973                 if (has_old_autopwm(data))
1974                         sysfs_remove_group(&dev->kobj,
1975                                            &it87_group_autopwm[i]);
1976         }
1977         if (!sio_data->skip_vid)
1978                 sysfs_remove_group(&dev->kobj, &it87_group_vid);
1979         sysfs_remove_group(&dev->kobj, &it87_group_label);
1980 }
1981
1982 static int it87_probe(struct platform_device *pdev)
1983 {
1984         struct it87_data *data;
1985         struct resource *res;
1986         struct device *dev = &pdev->dev;
1987         struct it87_sio_data *sio_data = dev->platform_data;
1988         int err = 0, i;
1989         int enable_pwm_interface;
1990         int fan_beep_need_rw;
1991
1992         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1993         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
1994                                  DRVNAME)) {
1995                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1996                         (unsigned long)res->start,
1997                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
1998                 return -EBUSY;
1999         }
2000
2001         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
2002         if (!data)
2003                 return -ENOMEM;
2004
2005         data->addr = res->start;
2006         data->type = sio_data->type;
2007         data->features = it87_devices[sio_data->type].features;
2008         data->peci_mask = it87_devices[sio_data->type].peci_mask;
2009         data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
2010         data->name = it87_devices[sio_data->type].name;
2011         /*
2012          * IT8705F Datasheet 0.4.1, 3h == Version G.
2013          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
2014          * These are the first revisions with 16-bit tachometer support.
2015          */
2016         switch (data->type) {
2017         case it87:
2018                 if (sio_data->revision >= 0x03) {
2019                         data->features &= ~FEAT_OLD_AUTOPWM;
2020                         data->features |= FEAT_16BIT_FANS;
2021                 }
2022                 break;
2023         case it8712:
2024                 if (sio_data->revision >= 0x08) {
2025                         data->features &= ~FEAT_OLD_AUTOPWM;
2026                         data->features |= FEAT_16BIT_FANS;
2027                 }
2028                 break;
2029         default:
2030                 break;
2031         }
2032
2033         /* Now, we do the remaining detection. */
2034         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
2035          || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
2036                 return -ENODEV;
2037
2038         platform_set_drvdata(pdev, data);
2039
2040         mutex_init(&data->update_lock);
2041
2042         /* Check PWM configuration */
2043         enable_pwm_interface = it87_check_pwm(dev);
2044
2045         /* Starting with IT8721F, we handle scaling of internal voltages */
2046         if (has_12mv_adc(data)) {
2047                 if (sio_data->internal & (1 << 0))
2048                         data->in_scaled |= (1 << 3);    /* in3 is AVCC */
2049                 if (sio_data->internal & (1 << 1))
2050                         data->in_scaled |= (1 << 7);    /* in7 is VSB */
2051                 if (sio_data->internal & (1 << 2))
2052                         data->in_scaled |= (1 << 8);    /* in8 is Vbat */
2053         } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2054                 if (sio_data->internal & (1 << 0))
2055                         data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
2056                 if (sio_data->internal & (1 << 1))
2057                         data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
2058         }
2059
2060         data->has_temp = 0x07;
2061         if (sio_data->skip_temp & (1 << 2)) {
2062                 if (sio_data->type == it8782
2063                     && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2064                         data->has_temp &= ~(1 << 2);
2065         }
2066
2067         /* Initialize the IT87 chip */
2068         it87_init_device(pdev);
2069
2070         /* Register sysfs hooks */
2071         err = sysfs_create_group(&dev->kobj, &it87_group);
2072         if (err)
2073                 return err;
2074
2075         for (i = 0; i < 9; i++) {
2076                 if (sio_data->skip_in & (1 << i))
2077                         continue;
2078                 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2079                 if (err)
2080                         goto error;
2081                 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2082                         err = sysfs_create_file(&dev->kobj,
2083                                                 it87_attributes_in_beep[i]);
2084                         if (err)
2085                                 goto error;
2086                 }
2087         }
2088
2089         for (i = 0; i < 3; i++) {
2090                 if (!(data->has_temp & (1 << i)))
2091                         continue;
2092                 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2093                 if (err)
2094                         goto error;
2095                 if (has_temp_offset(data)) {
2096                         err = sysfs_create_file(&dev->kobj,
2097                                                 it87_attributes_temp_offset[i]);
2098                         if (err)
2099                                 goto error;
2100                 }
2101                 if (sio_data->beep_pin) {
2102                         err = sysfs_create_file(&dev->kobj,
2103                                                 it87_attributes_temp_beep[i]);
2104                         if (err)
2105                                 goto error;
2106                 }
2107         }
2108
2109         /* Do not create fan files for disabled fans */
2110         fan_beep_need_rw = 1;
2111         for (i = 0; i < 5; i++) {
2112                 if (!(data->has_fan & (1 << i)))
2113                         continue;
2114                 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2115                 if (err)
2116                         goto error;
2117
2118                 if (i < 3 && !has_16bit_fans(data)) {
2119                         err = sysfs_create_file(&dev->kobj,
2120                                                 it87_attributes_fan_div[i]);
2121                         if (err)
2122                                 goto error;
2123                 }
2124
2125                 if (sio_data->beep_pin) {
2126                         err = sysfs_create_file(&dev->kobj,
2127                                                 it87_attributes_fan_beep[i]);
2128                         if (err)
2129                                 goto error;
2130                         if (!fan_beep_need_rw)
2131                                 continue;
2132
2133                         /*
2134                          * As we have a single beep enable bit for all fans,
2135                          * only the first enabled fan has a writable attribute
2136                          * for it.
2137                          */
2138                         if (sysfs_chmod_file(&dev->kobj,
2139                                              it87_attributes_fan_beep[i],
2140                                              S_IRUGO | S_IWUSR))
2141                                 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2142                                         i + 1);
2143                         fan_beep_need_rw = 0;
2144                 }
2145         }
2146
2147         if (enable_pwm_interface) {
2148                 for (i = 0; i < 3; i++) {
2149                         if (sio_data->skip_pwm & (1 << i))
2150                                 continue;
2151                         err = sysfs_create_group(&dev->kobj,
2152                                                  &it87_group_pwm[i]);
2153                         if (err)
2154                                 goto error;
2155
2156                         if (!has_old_autopwm(data))
2157                                 continue;
2158                         err = sysfs_create_group(&dev->kobj,
2159                                                  &it87_group_autopwm[i]);
2160                         if (err)
2161                                 goto error;
2162                 }
2163         }
2164
2165         if (!sio_data->skip_vid) {
2166                 data->vrm = vid_which_vrm();
2167                 /* VID reading from Super-I/O config space if available */
2168                 data->vid = sio_data->vid_value;
2169                 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2170                 if (err)
2171                         goto error;
2172         }
2173
2174         /* Export labels for internal sensors */
2175         for (i = 0; i < 3; i++) {
2176                 if (!(sio_data->internal & (1 << i)))
2177                         continue;
2178                 err = sysfs_create_file(&dev->kobj,
2179                                         it87_attributes_label[i]);
2180                 if (err)
2181                         goto error;
2182         }
2183
2184         data->hwmon_dev = hwmon_device_register(dev);
2185         if (IS_ERR(data->hwmon_dev)) {
2186                 err = PTR_ERR(data->hwmon_dev);
2187                 goto error;
2188         }
2189
2190         return 0;
2191
2192 error:
2193         it87_remove_files(dev);
2194         return err;
2195 }
2196
2197 static int it87_remove(struct platform_device *pdev)
2198 {
2199         struct it87_data *data = platform_get_drvdata(pdev);
2200
2201         hwmon_device_unregister(data->hwmon_dev);
2202         it87_remove_files(&pdev->dev);
2203
2204         return 0;
2205 }
2206
2207 /*
2208  * Must be called with data->update_lock held, except during initialization.
2209  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2210  * would slow down the IT87 access and should not be necessary.
2211  */
2212 static int it87_read_value(struct it87_data *data, u8 reg)
2213 {
2214         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2215         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2216 }
2217
2218 /*
2219  * Must be called with data->update_lock held, except during initialization.
2220  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2221  * would slow down the IT87 access and should not be necessary.
2222  */
2223 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2224 {
2225         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2226         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2227 }
2228
2229 /* Return 1 if and only if the PWM interface is safe to use */
2230 static int it87_check_pwm(struct device *dev)
2231 {
2232         struct it87_data *data = dev_get_drvdata(dev);
2233         /*
2234          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2235          * and polarity set to active low is sign that this is the case so we
2236          * disable pwm control to protect the user.
2237          */
2238         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2239         if ((tmp & 0x87) == 0) {
2240                 if (fix_pwm_polarity) {
2241                         /*
2242                          * The user asks us to attempt a chip reconfiguration.
2243                          * This means switching to active high polarity and
2244                          * inverting all fan speed values.
2245                          */
2246                         int i;
2247                         u8 pwm[3];
2248
2249                         for (i = 0; i < 3; i++)
2250                                 pwm[i] = it87_read_value(data,
2251                                                          IT87_REG_PWM(i));
2252
2253                         /*
2254                          * If any fan is in automatic pwm mode, the polarity
2255                          * might be correct, as suspicious as it seems, so we
2256                          * better don't change anything (but still disable the
2257                          * PWM interface).
2258                          */
2259                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2260                                 dev_info(dev,
2261                                          "Reconfiguring PWM to active high polarity\n");
2262                                 it87_write_value(data, IT87_REG_FAN_CTL,
2263                                                  tmp | 0x87);
2264                                 for (i = 0; i < 3; i++)
2265                                         it87_write_value(data,
2266                                                          IT87_REG_PWM(i),
2267                                                          0x7f & ~pwm[i]);
2268                                 return 1;
2269                         }
2270
2271                         dev_info(dev,
2272                                  "PWM configuration is too broken to be fixed\n");
2273                 }
2274
2275                 dev_info(dev,
2276                          "Detected broken BIOS defaults, disabling PWM interface\n");
2277                 return 0;
2278         } else if (fix_pwm_polarity) {
2279                 dev_info(dev,
2280                          "PWM configuration looks sane, won't touch\n");
2281         }
2282
2283         return 1;
2284 }
2285
2286 /* Called when we have found a new IT87. */
2287 static void it87_init_device(struct platform_device *pdev)
2288 {
2289         struct it87_sio_data *sio_data = pdev->dev.platform_data;
2290         struct it87_data *data = platform_get_drvdata(pdev);
2291         int tmp, i;
2292         u8 mask;
2293
2294         /*
2295          * For each PWM channel:
2296          * - If it is in automatic mode, setting to manual mode should set
2297          *   the fan to full speed by default.
2298          * - If it is in manual mode, we need a mapping to temperature
2299          *   channels to use when later setting to automatic mode later.
2300          *   Use a 1:1 mapping by default (we are clueless.)
2301          * In both cases, the value can (and should) be changed by the user
2302          * prior to switching to a different mode.
2303          * Note that this is no longer needed for the IT8721F and later, as
2304          * these have separate registers for the temperature mapping and the
2305          * manual duty cycle.
2306          */
2307         for (i = 0; i < 3; i++) {
2308                 data->pwm_temp_map[i] = i;
2309                 data->pwm_duty[i] = 0x7f;       /* Full speed */
2310                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2311         }
2312
2313         /*
2314          * Some chips seem to have default value 0xff for all limit
2315          * registers. For low voltage limits it makes no sense and triggers
2316          * alarms, so change to 0 instead. For high temperature limits, it
2317          * means -1 degree C, which surprisingly doesn't trigger an alarm,
2318          * but is still confusing, so change to 127 degrees C.
2319          */
2320         for (i = 0; i < 8; i++) {
2321                 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2322                 if (tmp == 0xff)
2323                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2324         }
2325         for (i = 0; i < 3; i++) {
2326                 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2327                 if (tmp == 0xff)
2328                         it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2329         }
2330
2331         /*
2332          * Temperature channels are not forcibly enabled, as they can be
2333          * set to two different sensor types and we can't guess which one
2334          * is correct for a given system. These channels can be enabled at
2335          * run-time through the temp{1-3}_type sysfs accessors if needed.
2336          */
2337
2338         /* Check if voltage monitors are reset manually or by some reason */
2339         tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2340         if ((tmp & 0xff) == 0) {
2341                 /* Enable all voltage monitors */
2342                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2343         }
2344
2345         /* Check if tachometers are reset manually or by some reason */
2346         mask = 0x70 & ~(sio_data->skip_fan << 4);
2347         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2348         if ((data->fan_main_ctrl & mask) == 0) {
2349                 /* Enable all fan tachometers */
2350                 data->fan_main_ctrl |= mask;
2351                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2352                                  data->fan_main_ctrl);
2353         }
2354         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2355
2356         /* Set tachometers to 16-bit mode if needed */
2357         if (has_16bit_fans(data)) {
2358                 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2359                 if (~tmp & 0x07 & data->has_fan) {
2360                         dev_dbg(&pdev->dev,
2361                                 "Setting fan1-3 to 16-bit mode\n");
2362                         it87_write_value(data, IT87_REG_FAN_16BIT,
2363                                          tmp | 0x07);
2364                 }
2365                 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2366                 if (data->type != it87 && data->type != it8782 &&
2367                     data->type != it8783) {
2368                         if (tmp & (1 << 4))
2369                                 data->has_fan |= (1 << 3); /* fan4 enabled */
2370                         if (tmp & (1 << 5))
2371                                 data->has_fan |= (1 << 4); /* fan5 enabled */
2372                 }
2373         }
2374
2375         /* Fan input pins may be used for alternative functions */
2376         data->has_fan &= ~sio_data->skip_fan;
2377
2378         /* Start monitoring */
2379         it87_write_value(data, IT87_REG_CONFIG,
2380                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2381                          | (update_vbat ? 0x41 : 0x01));
2382 }
2383
2384 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2385 {
2386         data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2387         if (has_newer_autopwm(data)) {
2388                 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2389                 data->pwm_duty[nr] = it87_read_value(data,
2390                                                      IT87_REG_PWM_DUTY(nr));
2391         } else {
2392                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
2393                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2394                 else                            /* Manual mode */
2395                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2396         }
2397
2398         if (has_old_autopwm(data)) {
2399                 int i;
2400
2401                 for (i = 0; i < 5 ; i++)
2402                         data->auto_temp[nr][i] = it87_read_value(data,
2403                                                 IT87_REG_AUTO_TEMP(nr, i));
2404                 for (i = 0; i < 3 ; i++)
2405                         data->auto_pwm[nr][i] = it87_read_value(data,
2406                                                 IT87_REG_AUTO_PWM(nr, i));
2407         }
2408 }
2409
2410 static struct it87_data *it87_update_device(struct device *dev)
2411 {
2412         struct it87_data *data = dev_get_drvdata(dev);
2413         int i;
2414
2415         mutex_lock(&data->update_lock);
2416
2417         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2418             || !data->valid) {
2419                 if (update_vbat) {
2420                         /*
2421                          * Cleared after each update, so reenable.  Value
2422                          * returned by this read will be previous value
2423                          */
2424                         it87_write_value(data, IT87_REG_CONFIG,
2425                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2426                 }
2427                 for (i = 0; i <= 7; i++) {
2428                         data->in[i][0] =
2429                                 it87_read_value(data, IT87_REG_VIN(i));
2430                         data->in[i][1] =
2431                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
2432                         data->in[i][2] =
2433                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
2434                 }
2435                 /* in8 (battery) has no limit registers */
2436                 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2437
2438                 for (i = 0; i < 5; i++) {
2439                         /* Skip disabled fans */
2440                         if (!(data->has_fan & (1 << i)))
2441                                 continue;
2442
2443                         data->fan[i][1] =
2444                                 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2445                         data->fan[i][0] = it87_read_value(data,
2446                                        IT87_REG_FAN[i]);
2447                         /* Add high byte if in 16-bit mode */
2448                         if (has_16bit_fans(data)) {
2449                                 data->fan[i][0] |= it87_read_value(data,
2450                                                 IT87_REG_FANX[i]) << 8;
2451                                 data->fan[i][1] |= it87_read_value(data,
2452                                                 IT87_REG_FANX_MIN[i]) << 8;
2453                         }
2454                 }
2455                 for (i = 0; i < 3; i++) {
2456                         if (!(data->has_temp & (1 << i)))
2457                                 continue;
2458                         data->temp[i][0] =
2459                                 it87_read_value(data, IT87_REG_TEMP(i));
2460                         data->temp[i][1] =
2461                                 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2462                         data->temp[i][2] =
2463                                 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2464                         if (has_temp_offset(data))
2465                                 data->temp[i][3] =
2466                                   it87_read_value(data,
2467                                                   IT87_REG_TEMP_OFFSET[i]);
2468                 }
2469
2470                 /* Newer chips don't have clock dividers */
2471                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2472                         i = it87_read_value(data, IT87_REG_FAN_DIV);
2473                         data->fan_div[0] = i & 0x07;
2474                         data->fan_div[1] = (i >> 3) & 0x07;
2475                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
2476                 }
2477
2478                 data->alarms =
2479                         it87_read_value(data, IT87_REG_ALARM1) |
2480                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2481                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
2482                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2483
2484                 data->fan_main_ctrl = it87_read_value(data,
2485                                 IT87_REG_FAN_MAIN_CTRL);
2486                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2487                 for (i = 0; i < 3; i++)
2488                         it87_update_pwm_ctrl(data, i);
2489
2490                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2491                 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
2492                 /*
2493                  * The IT8705F does not have VID capability.
2494                  * The IT8718F and later don't use IT87_REG_VID for the
2495                  * same purpose.
2496                  */
2497                 if (data->type == it8712 || data->type == it8716) {
2498                         data->vid = it87_read_value(data, IT87_REG_VID);
2499                         /*
2500                          * The older IT8712F revisions had only 5 VID pins,
2501                          * but we assume it is always safe to read 6 bits.
2502                          */
2503                         data->vid &= 0x3f;
2504                 }
2505                 data->last_updated = jiffies;
2506                 data->valid = 1;
2507         }
2508
2509         mutex_unlock(&data->update_lock);
2510
2511         return data;
2512 }
2513
2514 static int __init it87_device_add(unsigned short address,
2515                                   const struct it87_sio_data *sio_data)
2516 {
2517         struct resource res = {
2518                 .start  = address + IT87_EC_OFFSET,
2519                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2520                 .name   = DRVNAME,
2521                 .flags  = IORESOURCE_IO,
2522         };
2523         int err;
2524
2525         err = acpi_check_resource_conflict(&res);
2526         if (err)
2527                 goto exit;
2528
2529         pdev = platform_device_alloc(DRVNAME, address);
2530         if (!pdev) {
2531                 err = -ENOMEM;
2532                 pr_err("Device allocation failed\n");
2533                 goto exit;
2534         }
2535
2536         err = platform_device_add_resources(pdev, &res, 1);
2537         if (err) {
2538                 pr_err("Device resource addition failed (%d)\n", err);
2539                 goto exit_device_put;
2540         }
2541
2542         err = platform_device_add_data(pdev, sio_data,
2543                                        sizeof(struct it87_sio_data));
2544         if (err) {
2545                 pr_err("Platform data allocation failed\n");
2546                 goto exit_device_put;
2547         }
2548
2549         err = platform_device_add(pdev);
2550         if (err) {
2551                 pr_err("Device addition failed (%d)\n", err);
2552                 goto exit_device_put;
2553         }
2554
2555         return 0;
2556
2557 exit_device_put:
2558         platform_device_put(pdev);
2559 exit:
2560         return err;
2561 }
2562
2563 static int __init sm_it87_init(void)
2564 {
2565         int err;
2566         unsigned short isa_address = 0;
2567         struct it87_sio_data sio_data;
2568
2569         memset(&sio_data, 0, sizeof(struct it87_sio_data));
2570         err = it87_find(&isa_address, &sio_data);
2571         if (err)
2572                 return err;
2573         err = platform_driver_register(&it87_driver);
2574         if (err)
2575                 return err;
2576
2577         err = it87_device_add(isa_address, &sio_data);
2578         if (err) {
2579                 platform_driver_unregister(&it87_driver);
2580                 return err;
2581         }
2582
2583         return 0;
2584 }
2585
2586 static void __exit sm_it87_exit(void)
2587 {
2588         platform_device_unregister(pdev);
2589         platform_driver_unregister(&it87_driver);
2590 }
2591
2592
2593 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>");
2594 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2595 module_param(update_vbat, bool, 0);
2596 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2597 module_param(fix_pwm_polarity, bool, 0);
2598 MODULE_PARM_DESC(fix_pwm_polarity,
2599                  "Force PWM polarity to active high (DANGEROUS)");
2600 MODULE_LICENSE("GPL");
2601
2602 module_init(sm_it87_init);
2603 module_exit(sm_it87_exit);