Pileus Git - ~andy/linux/blob - drivers/hwmon/it87.c

   1 /*
   2  *  it87.c - Part of lm_sensors, Linux kernel modules for hardware
   3  *           monitoring.
   4  *
   5  *  The IT8705F is an LPC-based Super I/O part that contains UARTs, a
   6  *  parallel port, an IR port, a MIDI port, a floppy controller, etc., in
   7  *  addition to an Environment Controller (Enhanced Hardware Monitor and
   8  *  Fan Controller)
   9  *
  10  *  This driver supports only the Environment Controller in the IT8705F and
  11  *  similar parts.  The other devices are supported by different drivers.
  12  *
  13  *  Supports: IT8705F  Super I/O chip w/LPC interface
  14  *            IT8712F  Super I/O chip w/LPC interface
  15  *            IT8716F  Super I/O chip w/LPC interface
  16  *            IT8718F  Super I/O chip w/LPC interface
  17  *            IT8720F  Super I/O chip w/LPC interface
  18  *            IT8721F  Super I/O chip w/LPC interface
  19  *            IT8726F  Super I/O chip w/LPC interface
  20  *            IT8728F  Super I/O chip w/LPC interface
  21  *            IT8758E  Super I/O chip w/LPC interface
  22  *            IT8782F  Super I/O chip w/LPC interface
  23  *            IT8783E/F Super I/O chip w/LPC interface
  24  *            Sis950   A clone of the IT8705F
  25  *
  26  *  Copyright (C) 2001 Chris Gauthron
  27  *  Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org>
  28  *
  29  *  This program is free software; you can redistribute it and/or modify
  30  *  it under the terms of the GNU General Public License as published by
  31  *  the Free Software Foundation; either version 2 of the License, or
  32  *  (at your option) any later version.
  33  *
  34  *  This program is distributed in the hope that it will be useful,
  35  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  36  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  37  *  GNU General Public License for more details.
  38  *
  39  *  You should have received a copy of the GNU General Public License
  40  *  along with this program; if not, write to the Free Software
  41  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  42  */
  43
  44 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  45
  46 #include <linux/module.h>
  47 #include <linux/init.h>
  48 #include <linux/slab.h>
  49 #include <linux/jiffies.h>
  50 #include <linux/platform_device.h>
  51 #include <linux/hwmon.h>
  52 #include <linux/hwmon-sysfs.h>
  53 #include <linux/hwmon-vid.h>
  54 #include <linux/err.h>
  55 #include <linux/mutex.h>
  56 #include <linux/sysfs.h>
  57 #include <linux/string.h>
  58 #include <linux/dmi.h>
  59 #include <linux/acpi.h>
  60 #include <linux/io.h>
  61
  62 #define DRVNAME "it87"
  63
  64 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8782,
  65              it8783 };
  66
  67 static unsigned short force_id;
  68 module_param(force_id, ushort, 0);
  69 MODULE_PARM_DESC(force_id, "Override the detected device ID");
  70
  71 static struct platform_device *pdev;
  72
  73 #define REG     0x2e    /* The register to read/write */
  74 #define DEV     0x07    /* Register: Logical device select */
  75 #define VAL     0x2f    /* The value to read/write */
  76 #define PME     0x04    /* The device with the fan registers in it */
  77
  78 /* The device with the IT8718F/IT8720F VID value in it */
  79 #define GPIO    0x07
  80
  81 #define DEVID   0x20    /* Register: Device ID */
  82 #define DEVREV  0x22    /* Register: Device Revision */
  83
  84 static inline int superio_inb(int reg)
  85 {
  86         outb(reg, REG);
  87         return inb(VAL);
  88 }
  89
  90 static inline void superio_outb(int reg, int val)
  91 {
  92         outb(reg, REG);
  93         outb(val, VAL);
  94 }
  95
  96 static int superio_inw(int reg)
  97 {
  98         int val;
  99         outb(reg++, REG);
 100         val = inb(VAL) << 8;
 101         outb(reg, REG);
 102         val |= inb(VAL);
 103         return val;
 104 }
 105
 106 static inline void superio_select(int ldn)
 107 {
 108         outb(DEV, REG);
 109         outb(ldn, VAL);
 110 }
 111
 112 static inline int superio_enter(void)
 113 {
 114         /*
 115          * Try to reserve REG and REG + 1 for exclusive access.
 116          */
 117         if (!request_muxed_region(REG, 2, DRVNAME))
 118                 return -EBUSY;
 119
 120         outb(0x87, REG);
 121         outb(0x01, REG);
 122         outb(0x55, REG);
 123         outb(0x55, REG);
 124         return 0;
 125 }
 126
 127 static inline void superio_exit(void)
 128 {
 129         outb(0x02, REG);
 130         outb(0x02, VAL);
 131         release_region(REG, 2);
 132 }
 133
 134 /* Logical device 4 registers */
 135 #define IT8712F_DEVID 0x8712
 136 #define IT8705F_DEVID 0x8705
 137 #define IT8716F_DEVID 0x8716
 138 #define IT8718F_DEVID 0x8718
 139 #define IT8720F_DEVID 0x8720
 140 #define IT8721F_DEVID 0x8721
 141 #define IT8726F_DEVID 0x8726
 142 #define IT8728F_DEVID 0x8728
 143 #define IT8782F_DEVID 0x8782
 144 #define IT8783E_DEVID 0x8783
 145 #define IT87_ACT_REG  0x30
 146 #define IT87_BASE_REG 0x60
 147
 148 /* Logical device 7 registers (IT8712F and later) */
 149 #define IT87_SIO_GPIO1_REG      0x25
 150 #define IT87_SIO_GPIO3_REG      0x27
 151 #define IT87_SIO_GPIO5_REG      0x29
 152 #define IT87_SIO_PINX1_REG      0x2a    /* Pin selection */
 153 #define IT87_SIO_PINX2_REG      0x2c    /* Pin selection */
 154 #define IT87_SIO_SPI_REG        0xef    /* SPI function pin select */
 155 #define IT87_SIO_VID_REG        0xfc    /* VID value */
 156 #define IT87_SIO_BEEP_PIN_REG   0xf6    /* Beep pin mapping */
 157
 158 /* Update battery voltage after every reading if true */
 159 static bool update_vbat;
 160
 161 /* Not all BIOSes properly configure the PWM registers */
 162 static bool fix_pwm_polarity;
 163
 164 /* Many IT87 constants specified below */
 165
 166 /* Length of ISA address segment */
 167 #define IT87_EXTENT 8
 168
 169 /* Length of ISA address segment for Environmental Controller */
 170 #define IT87_EC_EXTENT 2
 171
 172 /* Offset of EC registers from ISA base address */
 173 #define IT87_EC_OFFSET 5
 174
 175 /* Where are the ISA address/data registers relative to the EC base address */
 176 #define IT87_ADDR_REG_OFFSET 0
 177 #define IT87_DATA_REG_OFFSET 1
 178
 179 /*----- The IT87 registers -----*/
 180
 181 #define IT87_REG_CONFIG        0x00
 182
 183 #define IT87_REG_ALARM1        0x01
 184 #define IT87_REG_ALARM2        0x02
 185 #define IT87_REG_ALARM3        0x03
 186
 187 /*
 188  * The IT8718F and IT8720F have the VID value in a different register, in
 189  * Super-I/O configuration space.
 190  */
 191 #define IT87_REG_VID           0x0a
 192 /*
 193  * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
 194  * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
 195  * mode.
 196  */
 197 #define IT87_REG_FAN_DIV       0x0b
 198 #define IT87_REG_FAN_16BIT     0x0c
 199
 200 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
 201
 202 static const u8 IT87_REG_FAN[]          = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
 203 static const u8 IT87_REG_FAN_MIN[]      = { 0x10, 0x11, 0x12, 0x84, 0x86 };
 204 static const u8 IT87_REG_FANX[]         = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
 205 static const u8 IT87_REG_FANX_MIN[]     = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
 206 static const u8 IT87_REG_TEMP_OFFSET[]  = { 0x56, 0x57, 0x59 };
 207
 208 #define IT87_REG_FAN_MAIN_CTRL 0x13
 209 #define IT87_REG_FAN_CTL       0x14
 210 #define IT87_REG_PWM(nr)       (0x15 + (nr))
 211 #define IT87_REG_PWM_DUTY(nr)  (0x63 + (nr) * 8)
 212
 213 #define IT87_REG_VIN(nr)       (0x20 + (nr))
 214 #define IT87_REG_TEMP(nr)      (0x29 + (nr))
 215
 216 #define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 217 #define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 218 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
 219 #define IT87_REG_TEMP_LOW(nr)  (0x41 + (nr) * 2)
 220
 221 #define IT87_REG_VIN_ENABLE    0x50
 222 #define IT87_REG_TEMP_ENABLE   0x51
 223 #define IT87_REG_TEMP_EXTRA    0x55
 224 #define IT87_REG_BEEP_ENABLE   0x5c
 225
 226 #define IT87_REG_CHIPID        0x58
 227
 228 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
 229 #define IT87_REG_AUTO_PWM(nr, i)  (0x65 + (nr) * 8 + (i))
 230
 231
 232 struct it87_sio_data {
 233         enum chips type;
 234         /* Values read from Super-I/O config space */
 235         u8 revision;
 236         u8 vid_value;
 237         u8 beep_pin;
 238         u8 internal;    /* Internal sensors can be labeled */
 239         /* Features skipped based on config or DMI */
 240         u16 skip_in;
 241         u8 skip_vid;
 242         u8 skip_fan;
 243         u8 skip_pwm;
 244         u8 skip_temp;
 245 };
 246
 247 /*
 248  * For each registered chip, we need to keep some data in memory.
 249  * The structure is dynamically allocated.
 250  */
 251 struct it87_data {
 252         struct device *hwmon_dev;
 253         enum chips type;
 254         u8 revision;
 255
 256         unsigned short addr;
 257         const char *name;
 258         struct mutex update_lock;
 259         char valid;             /* !=0 if following fields are valid */
 260         unsigned long last_updated;     /* In jiffies */
 261
 262         u16 in_scaled;          /* Internal voltage sensors are scaled */
 263         u8 in[9][3];            /* [nr][0]=in, [1]=min, [2]=max */
 264         u8 has_fan;             /* Bitfield, fans enabled */
 265         u16 fan[5][2];          /* Register values, [nr][0]=fan, [1]=min */
 266         u8 has_temp;            /* Bitfield, temp sensors enabled */
 267         s8 temp[3][4];          /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
 268         u8 sensor;              /* Register value */
 269         u8 fan_div[3];          /* Register encoding, shifted right */
 270         u8 vid;                 /* Register encoding, combined */
 271         u8 vrm;
 272         u32 alarms;             /* Register encoding, combined */
 273         u8 beeps;               /* Register encoding */
 274         u8 fan_main_ctrl;       /* Register value */
 275         u8 fan_ctl;             /* Register value */
 276
 277         /*
 278          * The following 3 arrays correspond to the same registers up to
 279          * the IT8720F. The meaning of bits 6-0 depends on the value of bit
 280          * 7, and we want to preserve settings on mode changes, so we have
 281          * to track all values separately.
 282          * Starting with the IT8721F, the manual PWM duty cycles are stored
 283          * in separate registers (8-bit values), so the separate tracking
 284          * is no longer needed, but it is still done to keep the driver
 285          * simple.
 286          */
 287         u8 pwm_ctrl[3];         /* Register value */
 288         u8 pwm_duty[3];         /* Manual PWM value set by user */
 289         u8 pwm_temp_map[3];     /* PWM to temp. chan. mapping (bits 1-0) */
 290
 291         /* Automatic fan speed control registers */
 292         u8 auto_pwm[3][4];      /* [nr][3] is hard-coded */
 293         s8 auto_temp[3][5];     /* [nr][0] is point1_temp_hyst */
 294 };
 295
 296 static inline int has_12mv_adc(const struct it87_data *data)
 297 {
 298         /*
 299          * IT8721F and later have a 12 mV ADC, also with internal scaling
 300          * on selected inputs.
 301          */
 302         return data->type == it8721
 303             || data->type == it8728;
 304 }
 305
 306 static inline int has_newer_autopwm(const struct it87_data *data)
 307 {
 308         /*
 309          * IT8721F and later have separate registers for the temperature
 310          * mapping and the manual duty cycle.
 311          */
 312         return data->type == it8721
 313             || data->type == it8728;
 314 }
 315
 316 static inline int has_temp_offset(const struct it87_data *data)
 317 {
 318         return data->type == it8716
 319             || data->type == it8718
 320             || data->type == it8720
 321             || data->type == it8721
 322             || data->type == it8728
 323             || data->type == it8782
 324             || data->type == it8783;
 325 }
 326
 327 static int adc_lsb(const struct it87_data *data, int nr)
 328 {
 329         int lsb = has_12mv_adc(data) ? 12 : 16;
 330         if (data->in_scaled & (1 << nr))
 331                 lsb <<= 1;
 332         return lsb;
 333 }
 334
 335 static u8 in_to_reg(const struct it87_data *data, int nr, long val)
 336 {
 337         val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
 338         return SENSORS_LIMIT(val, 0, 255);
 339 }
 340
 341 static int in_from_reg(const struct it87_data *data, int nr, int val)
 342 {
 343         return val * adc_lsb(data, nr);
 344 }
 345
 346 static inline u8 FAN_TO_REG(long rpm, int div)
 347 {
 348         if (rpm == 0)
 349                 return 255;
 350         rpm = SENSORS_LIMIT(rpm, 1, 1000000);
 351         return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
 352                              254);
 353 }
 354
 355 static inline u16 FAN16_TO_REG(long rpm)
 356 {
 357         if (rpm == 0)
 358                 return 0xffff;
 359         return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
 360 }
 361
 362 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
 363                                 1350000 / ((val) * (div)))
 364 /* The divider is fixed to 2 in 16-bit mode */
 365 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
 366                              1350000 / ((val) * 2))
 367
 368 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
 369                                         ((val) + 500) / 1000), -128, 127))
 370 #define TEMP_FROM_REG(val) ((val) * 1000)
 371
 372 static u8 pwm_to_reg(const struct it87_data *data, long val)
 373 {
 374         if (has_newer_autopwm(data))
 375                 return val;
 376         else
 377                 return val >> 1;
 378 }
 379
 380 static int pwm_from_reg(const struct it87_data *data, u8 reg)
 381 {
 382         if (has_newer_autopwm(data))
 383                 return reg;
 384         else
 385                 return (reg & 0x7f) << 1;
 386 }
 387
 388
 389 static int DIV_TO_REG(int val)
 390 {
 391         int answer = 0;
 392         while (answer < 7 && (val >>= 1))
 393                 answer++;
 394         return answer;
 395 }
 396 #define DIV_FROM_REG(val) (1 << (val))
 397
 398 static const unsigned int pwm_freq[8] = {
 399         48000000 / 128,
 400         24000000 / 128,
 401         12000000 / 128,
 402         8000000 / 128,
 403         6000000 / 128,
 404         3000000 / 128,
 405         1500000 / 128,
 406         750000 / 128,
 407 };
 408
 409 static inline int has_16bit_fans(const struct it87_data *data)
 410 {
 411         /*
 412          * IT8705F Datasheet 0.4.1, 3h == Version G.
 413          * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
 414          * These are the first revisions with 16-bit tachometer support.
 415          */
 416         return (data->type == it87 && data->revision >= 0x03)
 417             || (data->type == it8712 && data->revision >= 0x08)
 418             || data->type == it8716
 419             || data->type == it8718
 420             || data->type == it8720
 421             || data->type == it8721
 422             || data->type == it8728
 423             || data->type == it8782
 424             || data->type == it8783;
 425 }
 426
 427 static inline int has_old_autopwm(const struct it87_data *data)
 428 {
 429         /*
 430          * The old automatic fan speed control interface is implemented
 431          * by IT8705F chips up to revision F and IT8712F chips up to
 432          * revision G.
 433          */
 434         return (data->type == it87 && data->revision < 0x03)
 435             || (data->type == it8712 && data->revision < 0x08);
 436 }
 437
 438 static int it87_probe(struct platform_device *pdev);
 439 static int it87_remove(struct platform_device *pdev);
 440
 441 static int it87_read_value(struct it87_data *data, u8 reg);
 442 static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
 443 static struct it87_data *it87_update_device(struct device *dev);
 444 static int it87_check_pwm(struct device *dev);
 445 static void it87_init_device(struct platform_device *pdev);
 446
 447
 448 static struct platform_driver it87_driver = {
 449         .driver = {
 450                 .owner  = THIS_MODULE,
 451                 .name   = DRVNAME,
 452         },
 453         .probe  = it87_probe,
 454         .remove = it87_remove,
 455 };
 456
 457 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 458                        char *buf)
 459 {
 460         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 461         int nr = sattr->nr;
 462         int index = sattr->index;
 463
 464         struct it87_data *data = it87_update_device(dev);
 465         return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 466 }
 467
 468 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
 469                       const char *buf, size_t count)
 470 {
 471         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 472         int nr = sattr->nr;
 473         int index = sattr->index;
 474
 475         struct it87_data *data = dev_get_drvdata(dev);
 476         unsigned long val;
 477
 478         if (kstrtoul(buf, 10, &val) < 0)
 479                 return -EINVAL;
 480
 481         mutex_lock(&data->update_lock);
 482         data->in[nr][index] = in_to_reg(data, nr, val);
 483         it87_write_value(data,
 484                          index == 1 ? IT87_REG_VIN_MIN(nr)
 485                                     : IT87_REG_VIN_MAX(nr),
 486                          data->in[nr][index]);
 487         mutex_unlock(&data->update_lock);
 488         return count;
 489 }
 490
 491 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
 492 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
 493                             0, 1);
 494 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
 495                             0, 2);
 496
 497 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
 498 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
 499                             1, 1);
 500 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
 501                             1, 2);
 502
 503 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
 504 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
 505                             2, 1);
 506 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
 507                             2, 2);
 508
 509 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
 510 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
 511                             3, 1);
 512 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
 513                             3, 2);
 514
 515 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
 516 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
 517                             4, 1);
 518 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
 519                             4, 2);
 520
 521 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
 522 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
 523                             5, 1);
 524 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
 525                             5, 2);
 526
 527 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
 528 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
 529                             6, 1);
 530 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
 531                             6, 2);
 532
 533 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
 534 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
 535                             7, 1);
 536 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 537                             7, 2);
 538
 539 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 540
 541 /* 3 temperatures */
 542 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
 543                          char *buf)
 544 {
 545         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 546         int nr = sattr->nr;
 547         int index = sattr->index;
 548         struct it87_data *data = it87_update_device(dev);
 549
 550         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 551 }
 552
 553 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
 554                         const char *buf, size_t count)
 555 {
 556         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 557         int nr = sattr->nr;
 558         int index = sattr->index;
 559         struct it87_data *data = dev_get_drvdata(dev);
 560         long val;
 561         u8 reg, regval;
 562
 563         if (kstrtol(buf, 10, &val) < 0)
 564                 return -EINVAL;
 565
 566         mutex_lock(&data->update_lock);
 567
 568         switch (index) {
 569         default:
 570         case 1:
 571                 reg = IT87_REG_TEMP_LOW(nr);
 572                 break;
 573         case 2:
 574                 reg = IT87_REG_TEMP_HIGH(nr);
 575                 break;
 576         case 3:
 577                 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
 578                 if (!(regval & 0x80)) {
 579                         regval |= 0x80;
 580                         it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
 581                 }
 582                 data->valid = 0;
 583                 reg = IT87_REG_TEMP_OFFSET[nr];
 584                 break;
 585         }
 586
 587         data->temp[nr][index] = TEMP_TO_REG(val);
 588         it87_write_value(data, reg, data->temp[nr][index]);
 589         mutex_unlock(&data->update_lock);
 590         return count;
 591 }
 592
 593 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
 594 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 595                             0, 1);
 596 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 597                             0, 2);
 598 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
 599                             set_temp, 0, 3);
 600 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
 601 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 602                             1, 1);
 603 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 604                             1, 2);
 605 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
 606                             set_temp, 1, 3);
 607 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
 608 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
 609                             2, 1);
 610 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 611                             2, 2);
 612 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
 613                             set_temp, 2, 3);
 614
 615 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
 616                               char *buf)
 617 {
 618         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 619         int nr = sensor_attr->index;
 620         struct it87_data *data = it87_update_device(dev);
 621         u8 reg = data->sensor;      /* In case value is updated while used */
 622
 623         if (reg & (1 << nr))
 624                 return sprintf(buf, "3\n");  /* thermal diode */
 625         if (reg & (8 << nr))
 626                 return sprintf(buf, "4\n");  /* thermistor */
 627         return sprintf(buf, "0\n");      /* disabled */
 628 }
 629
 630 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
 631                              const char *buf, size_t count)
 632 {
 633         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 634         int nr = sensor_attr->index;
 635
 636         struct it87_data *data = dev_get_drvdata(dev);
 637         long val;
 638         u8 reg;
 639
 640         if (kstrtol(buf, 10, &val) < 0)
 641                 return -EINVAL;
 642
 643         reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
 644         reg &= ~(1 << nr);
 645         reg &= ~(8 << nr);
 646         if (val == 2) { /* backwards compatibility */
 647                 dev_warn(dev,
 648                          "Sensor type 2 is deprecated, please use 4 instead\n");
 649                 val = 4;
 650         }
 651         /* 3 = thermal diode; 4 = thermistor; 0 = disabled */
 652         if (val == 3)
 653                 reg |= 1 << nr;
 654         else if (val == 4)
 655                 reg |= 8 << nr;
 656         else if (val != 0)
 657                 return -EINVAL;
 658
 659         mutex_lock(&data->update_lock);
 660         data->sensor = reg;
 661         it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
 662         data->valid = 0;        /* Force cache refresh */
 663         mutex_unlock(&data->update_lock);
 664         return count;
 665 }
 666
 667 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
 668                           set_temp_type, 0);
 669 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
 670                           set_temp_type, 1);
 671 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
 672                           set_temp_type, 2);
 673
 674 /* 3 Fans */
 675
 676 static int pwm_mode(const struct it87_data *data, int nr)
 677 {
 678         int ctrl = data->fan_main_ctrl & (1 << nr);
 679
 680         if (ctrl == 0)                                  /* Full speed */
 681                 return 0;
 682         if (data->pwm_ctrl[nr] & 0x80)                  /* Automatic mode */
 683                 return 2;
 684         else                                            /* Manual mode */
 685                 return 1;
 686 }
 687
 688 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 689                         char *buf)
 690 {
 691         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 692         int nr = sattr->nr;
 693         int index = sattr->index;
 694         int speed;
 695         struct it87_data *data = it87_update_device(dev);
 696
 697         speed = has_16bit_fans(data) ?
 698                 FAN16_FROM_REG(data->fan[nr][index]) :
 699                 FAN_FROM_REG(data->fan[nr][index],
 700                              DIV_FROM_REG(data->fan_div[nr]));
 701         return sprintf(buf, "%d\n", speed);
 702 }
 703
 704 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
 705                 char *buf)
 706 {
 707         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 708         int nr = sensor_attr->index;
 709
 710         struct it87_data *data = it87_update_device(dev);
 711         return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
 712 }
 713 static ssize_t show_pwm_enable(struct device *dev,
 714                 struct device_attribute *attr, char *buf)
 715 {
 716         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 717         int nr = sensor_attr->index;
 718
 719         struct it87_data *data = it87_update_device(dev);
 720         return sprintf(buf, "%d\n", pwm_mode(data, nr));
 721 }
 722 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 723                 char *buf)
 724 {
 725         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 726         int nr = sensor_attr->index;
 727
 728         struct it87_data *data = it87_update_device(dev);
 729         return sprintf(buf, "%d\n",
 730                        pwm_from_reg(data, data->pwm_duty[nr]));
 731 }
 732 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
 733                 char *buf)
 734 {
 735         struct it87_data *data = it87_update_device(dev);
 736         int index = (data->fan_ctl >> 4) & 0x07;
 737
 738         return sprintf(buf, "%u\n", pwm_freq[index]);
 739 }
 740
 741 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 742                        const char *buf, size_t count)
 743 {
 744         struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
 745         int nr = sattr->nr;
 746         int index = sattr->index;
 747
 748         struct it87_data *data = dev_get_drvdata(dev);
 749         long val;
 750         u8 reg;
 751
 752         if (kstrtol(buf, 10, &val) < 0)
 753                 return -EINVAL;
 754
 755         mutex_lock(&data->update_lock);
 756
 757         if (has_16bit_fans(data)) {
 758                 data->fan[nr][index] = FAN16_TO_REG(val);
 759                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 760                                  data->fan[nr][index] & 0xff);
 761                 it87_write_value(data, IT87_REG_FANX_MIN[nr],
 762                                  data->fan[nr][index] >> 8);
 763         } else {
 764                 reg = it87_read_value(data, IT87_REG_FAN_DIV);
 765                 switch (nr) {
 766                 case 0:
 767                         data->fan_div[nr] = reg & 0x07;
 768                         break;
 769                 case 1:
 770                         data->fan_div[nr] = (reg >> 3) & 0x07;
 771                         break;
 772                 case 2:
 773                         data->fan_div[nr] = (reg & 0x40) ? 3 : 1;
 774                         break;
 775                 }
 776                 data->fan[nr][index] =
 777                   FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 778                 it87_write_value(data, IT87_REG_FAN_MIN[nr],
 779                                  data->fan[nr][index]);
 780         }
 781
 782         mutex_unlock(&data->update_lock);
 783         return count;
 784 }
 785
 786 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
 787                 const char *buf, size_t count)
 788 {
 789         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 790         int nr = sensor_attr->index;
 791
 792         struct it87_data *data = dev_get_drvdata(dev);
 793         unsigned long val;
 794         int min;
 795         u8 old;
 796
 797         if (kstrtoul(buf, 10, &val) < 0)
 798                 return -EINVAL;
 799
 800         mutex_lock(&data->update_lock);
 801         old = it87_read_value(data, IT87_REG_FAN_DIV);
 802
 803         /* Save fan min limit */
 804         min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
 805
 806         switch (nr) {
 807         case 0:
 808         case 1:
 809                 data->fan_div[nr] = DIV_TO_REG(val);
 810                 break;
 811         case 2:
 812                 if (val < 8)
 813                         data->fan_div[nr] = 1;
 814                 else
 815                         data->fan_div[nr] = 3;
 816         }
 817         val = old & 0x80;
 818         val |= (data->fan_div[0] & 0x07);
 819         val |= (data->fan_div[1] & 0x07) << 3;
 820         if (data->fan_div[2] == 3)
 821                 val |= 0x1 << 6;
 822         it87_write_value(data, IT87_REG_FAN_DIV, val);
 823
 824         /* Restore fan min limit */
 825         data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 826         it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]);
 827
 828         mutex_unlock(&data->update_lock);
 829         return count;
 830 }
 831
 832 /* Returns 0 if OK, -EINVAL otherwise */
 833 static int check_trip_points(struct device *dev, int nr)
 834 {
 835         const struct it87_data *data = dev_get_drvdata(dev);
 836         int i, err = 0;
 837
 838         if (has_old_autopwm(data)) {
 839                 for (i = 0; i < 3; i++) {
 840                         if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
 841                                 err = -EINVAL;
 842                 }
 843                 for (i = 0; i < 2; i++) {
 844                         if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
 845                                 err = -EINVAL;
 846                 }
 847         }
 848
 849         if (err) {
 850                 dev_err(dev,
 851                         "Inconsistent trip points, not switching to automatic mode\n");
 852                 dev_err(dev, "Adjust the trip points and try again\n");
 853         }
 854         return err;
 855 }
 856
 857 static ssize_t set_pwm_enable(struct device *dev,
 858                 struct device_attribute *attr, const char *buf, size_t count)
 859 {
 860         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 861         int nr = sensor_attr->index;
 862
 863         struct it87_data *data = dev_get_drvdata(dev);
 864         long val;
 865
 866         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
 867                 return -EINVAL;
 868
 869         /* Check trip points before switching to automatic mode */
 870         if (val == 2) {
 871                 if (check_trip_points(dev, nr) < 0)
 872                         return -EINVAL;
 873         }
 874
 875         mutex_lock(&data->update_lock);
 876
 877         if (val == 0) {
 878                 int tmp;
 879                 /* make sure the fan is on when in on/off mode */
 880                 tmp = it87_read_value(data, IT87_REG_FAN_CTL);
 881                 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
 882                 /* set on/off mode */
 883                 data->fan_main_ctrl &= ~(1 << nr);
 884                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 885                                  data->fan_main_ctrl);
 886         } else {
 887                 if (val == 1)                           /* Manual mode */
 888                         data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
 889                                              data->pwm_temp_map[nr] :
 890                                              data->pwm_duty[nr];
 891                 else                                    /* Automatic mode */
 892                         data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
 893                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
 894                 /* set SmartGuardian mode */
 895                 data->fan_main_ctrl |= (1 << nr);
 896                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
 897                                  data->fan_main_ctrl);
 898         }
 899
 900         mutex_unlock(&data->update_lock);
 901         return count;
 902 }
 903 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
 904                 const char *buf, size_t count)
 905 {
 906         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 907         int nr = sensor_attr->index;
 908
 909         struct it87_data *data = dev_get_drvdata(dev);
 910         long val;
 911
 912         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
 913                 return -EINVAL;
 914
 915         mutex_lock(&data->update_lock);
 916         if (has_newer_autopwm(data)) {
 917                 /*
 918                  * If we are in automatic mode, the PWM duty cycle register
 919                  * is read-only so we can't write the value.
 920                  */
 921                 if (data->pwm_ctrl[nr] & 0x80) {
 922                         mutex_unlock(&data->update_lock);
 923                         return -EBUSY;
 924                 }
 925                 data->pwm_duty[nr] = pwm_to_reg(data, val);
 926                 it87_write_value(data, IT87_REG_PWM_DUTY(nr),
 927                                  data->pwm_duty[nr]);
 928         } else {
 929                 data->pwm_duty[nr] = pwm_to_reg(data, val);
 930                 /*
 931                  * If we are in manual mode, write the duty cycle immediately;
 932                  * otherwise, just store it for later use.
 933                  */
 934                 if (!(data->pwm_ctrl[nr] & 0x80)) {
 935                         data->pwm_ctrl[nr] = data->pwm_duty[nr];
 936                         it87_write_value(data, IT87_REG_PWM(nr),
 937                                          data->pwm_ctrl[nr]);
 938                 }
 939         }
 940         mutex_unlock(&data->update_lock);
 941         return count;
 942 }
 943 static ssize_t set_pwm_freq(struct device *dev,
 944                 struct device_attribute *attr, const char *buf, size_t count)
 945 {
 946         struct it87_data *data = dev_get_drvdata(dev);
 947         unsigned long val;
 948         int i;
 949
 950         if (kstrtoul(buf, 10, &val) < 0)
 951                 return -EINVAL;
 952
 953         /* Search for the nearest available frequency */
 954         for (i = 0; i < 7; i++) {
 955                 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
 956                         break;
 957         }
 958
 959         mutex_lock(&data->update_lock);
 960         data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
 961         data->fan_ctl |= i << 4;
 962         it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
 963         mutex_unlock(&data->update_lock);
 964
 965         return count;
 966 }
 967 static ssize_t show_pwm_temp_map(struct device *dev,
 968                 struct device_attribute *attr, char *buf)
 969 {
 970         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 971         int nr = sensor_attr->index;
 972
 973         struct it87_data *data = it87_update_device(dev);
 974         int map;
 975
 976         if (data->pwm_temp_map[nr] < 3)
 977                 map = 1 << data->pwm_temp_map[nr];
 978         else
 979                 map = 0;                        /* Should never happen */
 980         return sprintf(buf, "%d\n", map);
 981 }
 982 static ssize_t set_pwm_temp_map(struct device *dev,
 983                 struct device_attribute *attr, const char *buf, size_t count)
 984 {
 985         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 986         int nr = sensor_attr->index;
 987
 988         struct it87_data *data = dev_get_drvdata(dev);
 989         long val;
 990         u8 reg;
 991
 992         /*
 993          * This check can go away if we ever support automatic fan speed
 994          * control on newer chips.
 995          */
 996         if (!has_old_autopwm(data)) {
 997                 dev_notice(dev, "Mapping change disabled for safety reasons\n");
 998                 return -EINVAL;
 999         }
1000
1001         if (kstrtol(buf, 10, &val) < 0)
1002                 return -EINVAL;
1003
1004         switch (val) {
1005         case (1 << 0):
1006                 reg = 0x00;
1007                 break;
1008         case (1 << 1):
1009                 reg = 0x01;
1010                 break;
1011         case (1 << 2):
1012                 reg = 0x02;
1013                 break;
1014         default:
1015                 return -EINVAL;
1016         }
1017
1018         mutex_lock(&data->update_lock);
1019         data->pwm_temp_map[nr] = reg;
1020         /*
1021          * If we are in automatic mode, write the temp mapping immediately;
1022          * otherwise, just store it for later use.
1023          */
1024         if (data->pwm_ctrl[nr] & 0x80) {
1025                 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
1026                 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
1027         }
1028         mutex_unlock(&data->update_lock);
1029         return count;
1030 }
1031
1032 static ssize_t show_auto_pwm(struct device *dev,
1033                 struct device_attribute *attr, char *buf)
1034 {
1035         struct it87_data *data = it87_update_device(dev);
1036         struct sensor_device_attribute_2 *sensor_attr =
1037                         to_sensor_dev_attr_2(attr);
1038         int nr = sensor_attr->nr;
1039         int point = sensor_attr->index;
1040
1041         return sprintf(buf, "%d\n",
1042                        pwm_from_reg(data, data->auto_pwm[nr][point]));
1043 }
1044
1045 static ssize_t set_auto_pwm(struct device *dev,
1046                 struct device_attribute *attr, const char *buf, size_t count)
1047 {
1048         struct it87_data *data = dev_get_drvdata(dev);
1049         struct sensor_device_attribute_2 *sensor_attr =
1050                         to_sensor_dev_attr_2(attr);
1051         int nr = sensor_attr->nr;
1052         int point = sensor_attr->index;
1053         long val;
1054
1055         if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
1056                 return -EINVAL;
1057
1058         mutex_lock(&data->update_lock);
1059         data->auto_pwm[nr][point] = pwm_to_reg(data, val);
1060         it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
1061                          data->auto_pwm[nr][point]);
1062         mutex_unlock(&data->update_lock);
1063         return count;
1064 }
1065
1066 static ssize_t show_auto_temp(struct device *dev,
1067                 struct device_attribute *attr, char *buf)
1068 {
1069         struct it87_data *data = it87_update_device(dev);
1070         struct sensor_device_attribute_2 *sensor_attr =
1071                         to_sensor_dev_attr_2(attr);
1072         int nr = sensor_attr->nr;
1073         int point = sensor_attr->index;
1074
1075         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
1076 }
1077
1078 static ssize_t set_auto_temp(struct device *dev,
1079                 struct device_attribute *attr, const char *buf, size_t count)
1080 {
1081         struct it87_data *data = dev_get_drvdata(dev);
1082         struct sensor_device_attribute_2 *sensor_attr =
1083                         to_sensor_dev_attr_2(attr);
1084         int nr = sensor_attr->nr;
1085         int point = sensor_attr->index;
1086         long val;
1087
1088         if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
1089                 return -EINVAL;
1090
1091         mutex_lock(&data->update_lock);
1092         data->auto_temp[nr][point] = TEMP_TO_REG(val);
1093         it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
1094                          data->auto_temp[nr][point]);
1095         mutex_unlock(&data->update_lock);
1096         return count;
1097 }
1098
1099 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
1100 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1101                             0, 1);
1102 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
1103                           set_fan_div, 0);
1104
1105 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
1106 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1107                             1, 1);
1108 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
1109                           set_fan_div, 1);
1110
1111 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
1112 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1113                             2, 1);
1114 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
1115                           set_fan_div, 2);
1116
1117 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
1118 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1119                             3, 1);
1120
1121 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
1122 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
1123                             4, 1);
1124
1125 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1126                           show_pwm_enable, set_pwm_enable, 0);
1127 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
1128 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
1129 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
1130                           show_pwm_temp_map, set_pwm_temp_map, 0);
1131 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1132                             show_auto_pwm, set_auto_pwm, 0, 0);
1133 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
1134                             show_auto_pwm, set_auto_pwm, 0, 1);
1135 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
1136                             show_auto_pwm, set_auto_pwm, 0, 2);
1137 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
1138                             show_auto_pwm, NULL, 0, 3);
1139 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
1140                             show_auto_temp, set_auto_temp, 0, 1);
1141 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1142                             show_auto_temp, set_auto_temp, 0, 0);
1143 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
1144                             show_auto_temp, set_auto_temp, 0, 2);
1145 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
1146                             show_auto_temp, set_auto_temp, 0, 3);
1147 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
1148                             show_auto_temp, set_auto_temp, 0, 4);
1149
1150 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
1151                           show_pwm_enable, set_pwm_enable, 1);
1152 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
1153 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL);
1154 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
1155                           show_pwm_temp_map, set_pwm_temp_map, 1);
1156 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1157                             show_auto_pwm, set_auto_pwm, 1, 0);
1158 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
1159                             show_auto_pwm, set_auto_pwm, 1, 1);
1160 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
1161                             show_auto_pwm, set_auto_pwm, 1, 2);
1162 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
1163                             show_auto_pwm, NULL, 1, 3);
1164 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
1165                             show_auto_temp, set_auto_temp, 1, 1);
1166 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1167                             show_auto_temp, set_auto_temp, 1, 0);
1168 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
1169                             show_auto_temp, set_auto_temp, 1, 2);
1170 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
1171                             show_auto_temp, set_auto_temp, 1, 3);
1172 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
1173                             show_auto_temp, set_auto_temp, 1, 4);
1174
1175 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
1176                           show_pwm_enable, set_pwm_enable, 2);
1177 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
1178 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL);
1179 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
1180                           show_pwm_temp_map, set_pwm_temp_map, 2);
1181 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1182                             show_auto_pwm, set_auto_pwm, 2, 0);
1183 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
1184                             show_auto_pwm, set_auto_pwm, 2, 1);
1185 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
1186                             show_auto_pwm, set_auto_pwm, 2, 2);
1187 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
1188                             show_auto_pwm, NULL, 2, 3);
1189 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
1190                             show_auto_temp, set_auto_temp, 2, 1);
1191 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
1192                             show_auto_temp, set_auto_temp, 2, 0);
1193 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
1194                             show_auto_temp, set_auto_temp, 2, 2);
1195 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
1196                             show_auto_temp, set_auto_temp, 2, 3);
1197 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
1198                             show_auto_temp, set_auto_temp, 2, 4);
1199
1200 /* Alarms */
1201 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
1202                 char *buf)
1203 {
1204         struct it87_data *data = it87_update_device(dev);
1205         return sprintf(buf, "%u\n", data->alarms);
1206 }
1207 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
1208
1209 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1210                 char *buf)
1211 {
1212         int bitnr = to_sensor_dev_attr(attr)->index;
1213         struct it87_data *data = it87_update_device(dev);
1214         return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
1215 }
1216
1217 static ssize_t clear_intrusion(struct device *dev, struct device_attribute
1218                 *attr, const char *buf, size_t count)
1219 {
1220         struct it87_data *data = dev_get_drvdata(dev);
1221         long val;
1222         int config;
1223
1224         if (kstrtol(buf, 10, &val) < 0 || val != 0)
1225                 return -EINVAL;
1226
1227         mutex_lock(&data->update_lock);
1228         config = it87_read_value(data, IT87_REG_CONFIG);
1229         if (config < 0) {
1230                 count = config;
1231         } else {
1232                 config |= 1 << 5;
1233                 it87_write_value(data, IT87_REG_CONFIG, config);
1234                 /* Invalidate cache to force re-read */
1235                 data->valid = 0;
1236         }
1237         mutex_unlock(&data->update_lock);
1238
1239         return count;
1240 }
1241
1242 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1243 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1244 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1245 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1246 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1247 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1248 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1249 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1250 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
1251 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
1252 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
1253 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
1254 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
1255 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
1256 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
1257 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
1258 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
1259                           show_alarm, clear_intrusion, 4);
1260
1261 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
1262                 char *buf)
1263 {
1264         int bitnr = to_sensor_dev_attr(attr)->index;
1265         struct it87_data *data = it87_update_device(dev);
1266         return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
1267 }
1268 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
1269                 const char *buf, size_t count)
1270 {
1271         int bitnr = to_sensor_dev_attr(attr)->index;
1272         struct it87_data *data = dev_get_drvdata(dev);
1273         long val;
1274
1275         if (kstrtol(buf, 10, &val) < 0
1276          || (val != 0 && val != 1))
1277                 return -EINVAL;
1278
1279         mutex_lock(&data->update_lock);
1280         data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
1281         if (val)
1282                 data->beeps |= (1 << bitnr);
1283         else
1284                 data->beeps &= ~(1 << bitnr);
1285         it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
1286         mutex_unlock(&data->update_lock);
1287         return count;
1288 }
1289
1290 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
1291                           show_beep, set_beep, 1);
1292 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
1293 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
1294 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
1295 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
1296 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
1297 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
1298 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
1299 /* fanX_beep writability is set later */
1300 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
1301 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
1302 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
1303 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
1304 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
1305 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
1306                           show_beep, set_beep, 2);
1307 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
1308 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
1309
1310 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1311                 char *buf)
1312 {
1313         struct it87_data *data = dev_get_drvdata(dev);
1314         return sprintf(buf, "%u\n", data->vrm);
1315 }
1316 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1317                 const char *buf, size_t count)
1318 {
1319         struct it87_data *data = dev_get_drvdata(dev);
1320         unsigned long val;
1321
1322         if (kstrtoul(buf, 10, &val) < 0)
1323                 return -EINVAL;
1324
1325         data->vrm = val;
1326
1327         return count;
1328 }
1329 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1330
1331 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1332                 char *buf)
1333 {
1334         struct it87_data *data = it87_update_device(dev);
1335         return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
1336 }
1337 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1338
1339 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
1340                 char *buf)
1341 {
1342         static const char * const labels[] = {
1343                 "+5V",
1344                 "5VSB",
1345                 "Vbat",
1346         };
1347         static const char * const labels_it8721[] = {
1348                 "+3.3V",
1349                 "3VSB",
1350                 "Vbat",
1351         };
1352         struct it87_data *data = dev_get_drvdata(dev);
1353         int nr = to_sensor_dev_attr(attr)->index;
1354
1355         return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
1356                                                        : labels[nr]);
1357 }
1358 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
1359 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
1360 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
1361
1362 static ssize_t show_name(struct device *dev, struct device_attribute
1363                          *devattr, char *buf)
1364 {
1365         struct it87_data *data = dev_get_drvdata(dev);
1366         return sprintf(buf, "%s\n", data->name);
1367 }
1368 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1369
1370 static struct attribute *it87_attributes_in[9][5] = {
1371 {
1372         &sensor_dev_attr_in0_input.dev_attr.attr,
1373         &sensor_dev_attr_in0_min.dev_attr.attr,
1374         &sensor_dev_attr_in0_max.dev_attr.attr,
1375         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1376         NULL
1377 }, {
1378         &sensor_dev_attr_in1_input.dev_attr.attr,
1379         &sensor_dev_attr_in1_min.dev_attr.attr,
1380         &sensor_dev_attr_in1_max.dev_attr.attr,
1381         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1382         NULL
1383 }, {
1384         &sensor_dev_attr_in2_input.dev_attr.attr,
1385         &sensor_dev_attr_in2_min.dev_attr.attr,
1386         &sensor_dev_attr_in2_max.dev_attr.attr,
1387         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1388         NULL
1389 }, {
1390         &sensor_dev_attr_in3_input.dev_attr.attr,
1391         &sensor_dev_attr_in3_min.dev_attr.attr,
1392         &sensor_dev_attr_in3_max.dev_attr.attr,
1393         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1394         NULL
1395 }, {
1396         &sensor_dev_attr_in4_input.dev_attr.attr,
1397         &sensor_dev_attr_in4_min.dev_attr.attr,
1398         &sensor_dev_attr_in4_max.dev_attr.attr,
1399         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1400         NULL
1401 }, {
1402         &sensor_dev_attr_in5_input.dev_attr.attr,
1403         &sensor_dev_attr_in5_min.dev_attr.attr,
1404         &sensor_dev_attr_in5_max.dev_attr.attr,
1405         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1406         NULL
1407 }, {
1408         &sensor_dev_attr_in6_input.dev_attr.attr,
1409         &sensor_dev_attr_in6_min.dev_attr.attr,
1410         &sensor_dev_attr_in6_max.dev_attr.attr,
1411         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1412         NULL
1413 }, {
1414         &sensor_dev_attr_in7_input.dev_attr.attr,
1415         &sensor_dev_attr_in7_min.dev_attr.attr,
1416         &sensor_dev_attr_in7_max.dev_attr.attr,
1417         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1418         NULL
1419 }, {
1420         &sensor_dev_attr_in8_input.dev_attr.attr,
1421         NULL
1422 } };
1423
1424 static const struct attribute_group it87_group_in[9] = {
1425         { .attrs = it87_attributes_in[0] },
1426         { .attrs = it87_attributes_in[1] },
1427         { .attrs = it87_attributes_in[2] },
1428         { .attrs = it87_attributes_in[3] },
1429         { .attrs = it87_attributes_in[4] },
1430         { .attrs = it87_attributes_in[5] },
1431         { .attrs = it87_attributes_in[6] },
1432         { .attrs = it87_attributes_in[7] },
1433         { .attrs = it87_attributes_in[8] },
1434 };
1435
1436 static struct attribute *it87_attributes_temp[3][6] = {
1437 {
1438         &sensor_dev_attr_temp1_input.dev_attr.attr,
1439         &sensor_dev_attr_temp1_max.dev_attr.attr,
1440         &sensor_dev_attr_temp1_min.dev_attr.attr,
1441         &sensor_dev_attr_temp1_type.dev_attr.attr,
1442         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1443         NULL
1444 } , {
1445         &sensor_dev_attr_temp2_input.dev_attr.attr,
1446         &sensor_dev_attr_temp2_max.dev_attr.attr,
1447         &sensor_dev_attr_temp2_min.dev_attr.attr,
1448         &sensor_dev_attr_temp2_type.dev_attr.attr,
1449         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1450         NULL
1451 } , {
1452         &sensor_dev_attr_temp3_input.dev_attr.attr,
1453         &sensor_dev_attr_temp3_max.dev_attr.attr,
1454         &sensor_dev_attr_temp3_min.dev_attr.attr,
1455         &sensor_dev_attr_temp3_type.dev_attr.attr,
1456         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1457         NULL
1458 } };
1459
1460 static const struct attribute_group it87_group_temp[3] = {
1461         { .attrs = it87_attributes_temp[0] },
1462         { .attrs = it87_attributes_temp[1] },
1463         { .attrs = it87_attributes_temp[2] },
1464 };
1465
1466 static struct attribute *it87_attributes_temp_offset[] = {
1467         &sensor_dev_attr_temp1_offset.dev_attr.attr,
1468         &sensor_dev_attr_temp2_offset.dev_attr.attr,
1469         &sensor_dev_attr_temp3_offset.dev_attr.attr,
1470 };
1471
1472 static struct attribute *it87_attributes[] = {
1473         &dev_attr_alarms.attr,
1474         &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
1475         &dev_attr_name.attr,
1476         NULL
1477 };
1478
1479 static const struct attribute_group it87_group = {
1480         .attrs = it87_attributes,
1481 };
1482
1483 static struct attribute *it87_attributes_in_beep[] = {
1484         &sensor_dev_attr_in0_beep.dev_attr.attr,
1485         &sensor_dev_attr_in1_beep.dev_attr.attr,
1486         &sensor_dev_attr_in2_beep.dev_attr.attr,
1487         &sensor_dev_attr_in3_beep.dev_attr.attr,
1488         &sensor_dev_attr_in4_beep.dev_attr.attr,
1489         &sensor_dev_attr_in5_beep.dev_attr.attr,
1490         &sensor_dev_attr_in6_beep.dev_attr.attr,
1491         &sensor_dev_attr_in7_beep.dev_attr.attr,
1492         NULL
1493 };
1494
1495 static struct attribute *it87_attributes_temp_beep[] = {
1496         &sensor_dev_attr_temp1_beep.dev_attr.attr,
1497         &sensor_dev_attr_temp2_beep.dev_attr.attr,
1498         &sensor_dev_attr_temp3_beep.dev_attr.attr,
1499 };
1500
1501 static struct attribute *it87_attributes_fan[5][3+1] = { {
1502         &sensor_dev_attr_fan1_input.dev_attr.attr,
1503         &sensor_dev_attr_fan1_min.dev_attr.attr,
1504         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1505         NULL
1506 }, {
1507         &sensor_dev_attr_fan2_input.dev_attr.attr,
1508         &sensor_dev_attr_fan2_min.dev_attr.attr,
1509         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1510         NULL
1511 }, {
1512         &sensor_dev_attr_fan3_input.dev_attr.attr,
1513         &sensor_dev_attr_fan3_min.dev_attr.attr,
1514         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1515         NULL
1516 }, {
1517         &sensor_dev_attr_fan4_input.dev_attr.attr,
1518         &sensor_dev_attr_fan4_min.dev_attr.attr,
1519         &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1520         NULL
1521 }, {
1522         &sensor_dev_attr_fan5_input.dev_attr.attr,
1523         &sensor_dev_attr_fan5_min.dev_attr.attr,
1524         &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1525         NULL
1526 } };
1527
1528 static const struct attribute_group it87_group_fan[5] = {
1529         { .attrs = it87_attributes_fan[0] },
1530         { .attrs = it87_attributes_fan[1] },
1531         { .attrs = it87_attributes_fan[2] },
1532         { .attrs = it87_attributes_fan[3] },
1533         { .attrs = it87_attributes_fan[4] },
1534 };
1535
1536 static const struct attribute *it87_attributes_fan_div[] = {
1537         &sensor_dev_attr_fan1_div.dev_attr.attr,
1538         &sensor_dev_attr_fan2_div.dev_attr.attr,
1539         &sensor_dev_attr_fan3_div.dev_attr.attr,
1540 };
1541
1542 static struct attribute *it87_attributes_pwm[3][4+1] = { {
1543         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1544         &sensor_dev_attr_pwm1.dev_attr.attr,
1545         &dev_attr_pwm1_freq.attr,
1546         &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
1547         NULL
1548 }, {
1549         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1550         &sensor_dev_attr_pwm2.dev_attr.attr,
1551         &dev_attr_pwm2_freq.attr,
1552         &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
1553         NULL
1554 }, {
1555         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1556         &sensor_dev_attr_pwm3.dev_attr.attr,
1557         &dev_attr_pwm3_freq.attr,
1558         &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1559         NULL
1560 } };
1561
1562 static const struct attribute_group it87_group_pwm[3] = {
1563         { .attrs = it87_attributes_pwm[0] },
1564         { .attrs = it87_attributes_pwm[1] },
1565         { .attrs = it87_attributes_pwm[2] },
1566 };
1567
1568 static struct attribute *it87_attributes_autopwm[3][9+1] = { {
1569         &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1570         &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1571         &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
1572         &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
1573         &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
1574         &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
1575         &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
1576         &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
1577         &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
1578         NULL
1579 }, {
1580         &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1581         &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1582         &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
1583         &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
1584         &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
1585         &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
1586         &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
1587         &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
1588         &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
1589         NULL
1590 }, {
1591         &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1592         &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1593         &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
1594         &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
1595         &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
1596         &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
1597         &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
1598         &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
1599         &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
1600         NULL
1601 } };
1602
1603 static const struct attribute_group it87_group_autopwm[3] = {
1604         { .attrs = it87_attributes_autopwm[0] },
1605         { .attrs = it87_attributes_autopwm[1] },
1606         { .attrs = it87_attributes_autopwm[2] },
1607 };
1608
1609 static struct attribute *it87_attributes_fan_beep[] = {
1610         &sensor_dev_attr_fan1_beep.dev_attr.attr,
1611         &sensor_dev_attr_fan2_beep.dev_attr.attr,
1612         &sensor_dev_attr_fan3_beep.dev_attr.attr,
1613         &sensor_dev_attr_fan4_beep.dev_attr.attr,
1614         &sensor_dev_attr_fan5_beep.dev_attr.attr,
1615 };
1616
1617 static struct attribute *it87_attributes_vid[] = {
1618         &dev_attr_vrm.attr,
1619         &dev_attr_cpu0_vid.attr,
1620         NULL
1621 };
1622
1623 static const struct attribute_group it87_group_vid = {
1624         .attrs = it87_attributes_vid,
1625 };
1626
1627 static struct attribute *it87_attributes_label[] = {
1628         &sensor_dev_attr_in3_label.dev_attr.attr,
1629         &sensor_dev_attr_in7_label.dev_attr.attr,
1630         &sensor_dev_attr_in8_label.dev_attr.attr,
1631         NULL
1632 };
1633
1634 static const struct attribute_group it87_group_label = {
1635         .attrs = it87_attributes_label,
1636 };
1637
1638 /* SuperIO detection - will change isa_address if a chip is found */
1639 static int __init it87_find(unsigned short *address,
1640         struct it87_sio_data *sio_data)
1641 {
1642         int err;
1643         u16 chip_type;
1644         const char *board_vendor, *board_name;
1645
1646         err = superio_enter();
1647         if (err)
1648                 return err;
1649
1650         err = -ENODEV;
1651         chip_type = force_id ? force_id : superio_inw(DEVID);
1652
1653         switch (chip_type) {
1654         case IT8705F_DEVID:
1655                 sio_data->type = it87;
1656                 break;
1657         case IT8712F_DEVID:
1658                 sio_data->type = it8712;
1659                 break;
1660         case IT8716F_DEVID:
1661         case IT8726F_DEVID:
1662                 sio_data->type = it8716;
1663                 break;
1664         case IT8718F_DEVID:
1665                 sio_data->type = it8718;
1666                 break;
1667         case IT8720F_DEVID:
1668                 sio_data->type = it8720;
1669                 break;
1670         case IT8721F_DEVID:
1671                 sio_data->type = it8721;
1672                 break;
1673         case IT8728F_DEVID:
1674                 sio_data->type = it8728;
1675                 break;
1676         case IT8782F_DEVID:
1677                 sio_data->type = it8782;
1678                 break;
1679         case IT8783E_DEVID:
1680                 sio_data->type = it8783;
1681                 break;
1682         case 0xffff:    /* No device at all */
1683                 goto exit;
1684         default:
1685                 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type);
1686                 goto exit;
1687         }
1688
1689         superio_select(PME);
1690         if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
1691                 pr_info("Device not activated, skipping\n");
1692                 goto exit;
1693         }
1694
1695         *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
1696         if (*address == 0) {
1697                 pr_info("Base address not set, skipping\n");
1698                 goto exit;
1699         }
1700
1701         err = 0;
1702         sio_data->revision = superio_inb(DEVREV) & 0x0f;
1703         pr_info("Found IT%04xF chip at 0x%x, revision %d\n",
1704                 chip_type, *address, sio_data->revision);
1705
1706         /* in8 (Vbat) is always internal */
1707         sio_data->internal = (1 << 2);
1708
1709         /* Read GPIO config and VID value from LDN 7 (GPIO) */
1710         if (sio_data->type == it87) {
1711                 /* The IT8705F doesn't have VID pins at all */
1712                 sio_data->skip_vid = 1;
1713
1714                 /* The IT8705F has a different LD number for GPIO */
1715                 superio_select(5);
1716                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1717         } else if (sio_data->type == it8783) {
1718                 int reg25, reg27, reg2A, reg2C, regEF;
1719
1720                 sio_data->skip_vid = 1; /* No VID */
1721
1722                 superio_select(GPIO);
1723
1724                 reg25 = superio_inb(IT87_SIO_GPIO1_REG);
1725                 reg27 = superio_inb(IT87_SIO_GPIO3_REG);
1726                 reg2A = superio_inb(IT87_SIO_PINX1_REG);
1727                 reg2C = superio_inb(IT87_SIO_PINX2_REG);
1728                 regEF = superio_inb(IT87_SIO_SPI_REG);
1729
1730                 /* Check if fan3 is there or not */
1731                 if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
1732                         sio_data->skip_fan |= (1 << 2);
1733                 if ((reg25 & (1 << 4))
1734                     || (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
1735                         sio_data->skip_pwm |= (1 << 2);
1736
1737                 /* Check if fan2 is there or not */
1738                 if (reg27 & (1 << 7))
1739                         sio_data->skip_fan |= (1 << 1);
1740                 if (reg27 & (1 << 3))
1741                         sio_data->skip_pwm |= (1 << 1);
1742
1743                 /* VIN5 */
1744                 if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
1745                         sio_data->skip_in |= (1 << 5); /* No VIN5 */
1746
1747                 /* VIN6 */
1748                 if (reg27 & (1 << 1))
1749                         sio_data->skip_in |= (1 << 6); /* No VIN6 */
1750
1751                 /*
1752                  * VIN7
1753                  * Does not depend on bit 2 of Reg2C, contrary to datasheet.
1754                  */
1755                 if (reg27 & (1 << 2)) {
1756                         /*
1757                          * The data sheet is a bit unclear regarding the
1758                          * internal voltage divider for VCCH5V. It says
1759                          * "This bit enables and switches VIN7 (pin 91) to the
1760                          * internal voltage divider for VCCH5V".
1761                          * This is different to other chips, where the internal
1762                          * voltage divider would connect VIN7 to an internal
1763                          * voltage source. Maybe that is the case here as well.
1764                          *
1765                          * Since we don't know for sure, re-route it if that is
1766                          * not the case, and ask the user to report if the
1767                          * resulting voltage is sane.
1768                          */
1769                         if (!(reg2C & (1 << 1))) {
1770                                 reg2C |= (1 << 1);
1771                                 superio_outb(IT87_SIO_PINX2_REG, reg2C);
1772                                 pr_notice("Routing internal VCCH5V to in7.\n");
1773                         }
1774                         pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
1775                         pr_notice("Please report if it displays a reasonable voltage.\n");
1776                 }
1777
1778                 if (reg2C & (1 << 0))
1779                         sio_data->internal |= (1 << 0);
1780                 if (reg2C & (1 << 1))
1781                         sio_data->internal |= (1 << 1);
1782
1783                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1784
1785         } else {
1786                 int reg;
1787                 bool uart6;
1788
1789                 superio_select(GPIO);
1790
1791                 reg = superio_inb(IT87_SIO_GPIO3_REG);
1792                 if (sio_data->type == it8721 || sio_data->type == it8728 ||
1793                     sio_data->type == it8782) {
1794                         /*
1795                          * IT8721F/IT8758E, and IT8782F don't have VID pins
1796                          * at all, not sure about the IT8728F.
1797                          */
1798                         sio_data->skip_vid = 1;
1799                 } else {
1800                         /* We need at least 4 VID pins */
1801                         if (reg & 0x0f) {
1802                                 pr_info("VID is disabled (pins used for GPIO)\n");
1803                                 sio_data->skip_vid = 1;
1804                         }
1805                 }
1806
1807                 /* Check if fan3 is there or not */
1808                 if (reg & (1 << 6))
1809                         sio_data->skip_pwm |= (1 << 2);
1810                 if (reg & (1 << 7))
1811                         sio_data->skip_fan |= (1 << 2);
1812
1813                 /* Check if fan2 is there or not */
1814                 reg = superio_inb(IT87_SIO_GPIO5_REG);
1815                 if (reg & (1 << 1))
1816                         sio_data->skip_pwm |= (1 << 1);
1817                 if (reg & (1 << 2))
1818                         sio_data->skip_fan |= (1 << 1);
1819
1820                 if ((sio_data->type == it8718 || sio_data->type == it8720)
1821                  && !(sio_data->skip_vid))
1822                         sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
1823
1824                 reg = superio_inb(IT87_SIO_PINX2_REG);
1825
1826                 uart6 = sio_data->type == it8782 && (reg & (1 << 2));
1827
1828                 /*
1829                  * The IT8720F has no VIN7 pin, so VCCH should always be
1830                  * routed internally to VIN7 with an internal divider.
1831                  * Curiously, there still is a configuration bit to control
1832                  * this, which means it can be set incorrectly. And even
1833                  * more curiously, many boards out there are improperly
1834                  * configured, even though the IT8720F datasheet claims
1835                  * that the internal routing of VCCH to VIN7 is the default
1836                  * setting. So we force the internal routing in this case.
1837                  *
1838                  * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
1839                  * If UART6 is enabled, re-route VIN7 to the internal divider
1840                  * if that is not already the case.
1841                  */
1842                 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
1843                         reg |= (1 << 1);
1844                         superio_outb(IT87_SIO_PINX2_REG, reg);
1845                         pr_notice("Routing internal VCCH to in7\n");
1846                 }
1847                 if (reg & (1 << 0))
1848                         sio_data->internal |= (1 << 0);
1849                 if ((reg & (1 << 1)) || sio_data->type == it8721 ||
1850                     sio_data->type == it8728)
1851                         sio_data->internal |= (1 << 1);
1852
1853                 /*
1854                  * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
1855                  * While VIN7 can be routed to the internal voltage divider,
1856                  * VIN5 and VIN6 are not available if UART6 is enabled.
1857                  *
1858                  * Also, temp3 is not available if UART6 is enabled and TEMPIN3
1859                  * is the temperature source. Since we can not read the
1860                  * temperature source here, skip_temp is preliminary.
1861                  */
1862                 if (uart6) {
1863                         sio_data->skip_in |= (1 << 5) | (1 << 6);
1864                         sio_data->skip_temp |= (1 << 2);
1865                 }
1866
1867                 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
1868         }
1869         if (sio_data->beep_pin)
1870                 pr_info("Beeping is supported\n");
1871
1872         /* Disable specific features based on DMI strings */
1873         board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1874         board_name = dmi_get_system_info(DMI_BOARD_NAME);
1875         if (board_vendor && board_name) {
1876                 if (strcmp(board_vendor, "nVIDIA") == 0
1877                  && strcmp(board_name, "FN68PT") == 0) {
1878                         /*
1879                          * On the Shuttle SN68PT, FAN_CTL2 is apparently not
1880                          * connected to a fan, but to something else. One user
1881                          * has reported instant system power-off when changing
1882                          * the PWM2 duty cycle, so we disable it.
1883                          * I use the board name string as the trigger in case
1884                          * the same board is ever used in other systems.
1885                          */
1886                         pr_info("Disabling pwm2 due to hardware constraints\n");
1887                         sio_data->skip_pwm = (1 << 1);
1888                 }
1889         }
1890
1891 exit:
1892         superio_exit();
1893         return err;
1894 }
1895
1896 static void it87_remove_files(struct device *dev)
1897 {
1898         struct it87_data *data = platform_get_drvdata(pdev);
1899         struct it87_sio_data *sio_data = dev->platform_data;
1900         int i;
1901
1902         sysfs_remove_group(&dev->kobj, &it87_group);
1903         for (i = 0; i < 9; i++) {
1904                 if (sio_data->skip_in & (1 << i))
1905                         continue;
1906                 sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
1907                 if (it87_attributes_in_beep[i])
1908                         sysfs_remove_file(&dev->kobj,
1909                                           it87_attributes_in_beep[i]);
1910         }
1911         for (i = 0; i < 3; i++) {
1912                 if (!(data->has_temp & (1 << i)))
1913                         continue;
1914                 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
1915                 if (has_temp_offset(data))
1916                         sysfs_remove_file(&dev->kobj,
1917                                           it87_attributes_temp_offset[i]);
1918                 if (sio_data->beep_pin)
1919                         sysfs_remove_file(&dev->kobj,
1920                                           it87_attributes_temp_beep[i]);
1921         }
1922         for (i = 0; i < 5; i++) {
1923                 if (!(data->has_fan & (1 << i)))
1924                         continue;
1925                 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
1926                 if (sio_data->beep_pin)
1927                         sysfs_remove_file(&dev->kobj,
1928                                           it87_attributes_fan_beep[i]);
1929                 if (i < 3 && !has_16bit_fans(data))
1930                         sysfs_remove_file(&dev->kobj,
1931                                           it87_attributes_fan_div[i]);
1932         }
1933         for (i = 0; i < 3; i++) {
1934                 if (sio_data->skip_pwm & (1 << 0))
1935                         continue;
1936                 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
1937                 if (has_old_autopwm(data))
1938                         sysfs_remove_group(&dev->kobj,
1939                                            &it87_group_autopwm[i]);
1940         }
1941         if (!sio_data->skip_vid)
1942                 sysfs_remove_group(&dev->kobj, &it87_group_vid);
1943         sysfs_remove_group(&dev->kobj, &it87_group_label);
1944 }
1945
1946 static int it87_probe(struct platform_device *pdev)
1947 {
1948         struct it87_data *data;
1949         struct resource *res;
1950         struct device *dev = &pdev->dev;
1951         struct it87_sio_data *sio_data = dev->platform_data;
1952         int err = 0, i;
1953         int enable_pwm_interface;
1954         int fan_beep_need_rw;
1955         static const char * const names[] = {
1956                 "it87",
1957                 "it8712",
1958                 "it8716",
1959                 "it8718",
1960                 "it8720",
1961                 "it8721",
1962                 "it8728",
1963                 "it8782",
1964                 "it8783",
1965         };
1966
1967         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
1968         if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
1969                                  DRVNAME)) {
1970                 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
1971                         (unsigned long)res->start,
1972                         (unsigned long)(res->start + IT87_EC_EXTENT - 1));
1973                 return -EBUSY;
1974         }
1975
1976         data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
1977         if (!data)
1978                 return -ENOMEM;
1979
1980         data->addr = res->start;
1981         data->type = sio_data->type;
1982         data->revision = sio_data->revision;
1983         data->name = names[sio_data->type];
1984
1985         /* Now, we do the remaining detection. */
1986         if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
1987          || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
1988                 return -ENODEV;
1989
1990         platform_set_drvdata(pdev, data);
1991
1992         mutex_init(&data->update_lock);
1993
1994         /* Check PWM configuration */
1995         enable_pwm_interface = it87_check_pwm(dev);
1996
1997         /* Starting with IT8721F, we handle scaling of internal voltages */
1998         if (has_12mv_adc(data)) {
1999                 if (sio_data->internal & (1 << 0))
2000                         data->in_scaled |= (1 << 3);    /* in3 is AVCC */
2001                 if (sio_data->internal & (1 << 1))
2002                         data->in_scaled |= (1 << 7);    /* in7 is VSB */
2003                 if (sio_data->internal & (1 << 2))
2004                         data->in_scaled |= (1 << 8);    /* in8 is Vbat */
2005         } else if (sio_data->type == it8782 || sio_data->type == it8783) {
2006                 if (sio_data->internal & (1 << 0))
2007                         data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
2008                 if (sio_data->internal & (1 << 1))
2009                         data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
2010         }
2011
2012         data->has_temp = 0x07;
2013         if (sio_data->skip_temp & (1 << 2)) {
2014                 if (sio_data->type == it8782
2015                     && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
2016                         data->has_temp &= ~(1 << 2);
2017         }
2018
2019         /* Initialize the IT87 chip */
2020         it87_init_device(pdev);
2021
2022         /* Register sysfs hooks */
2023         err = sysfs_create_group(&dev->kobj, &it87_group);
2024         if (err)
2025                 return err;
2026
2027         for (i = 0; i < 9; i++) {
2028                 if (sio_data->skip_in & (1 << i))
2029                         continue;
2030                 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
2031                 if (err)
2032                         goto error;
2033                 if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
2034                         err = sysfs_create_file(&dev->kobj,
2035                                                 it87_attributes_in_beep[i]);
2036                         if (err)
2037                                 goto error;
2038                 }
2039         }
2040
2041         for (i = 0; i < 3; i++) {
2042                 if (!(data->has_temp & (1 << i)))
2043                         continue;
2044                 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
2045                 if (err)
2046                         goto error;
2047                 if (has_temp_offset(data)) {
2048                         err = sysfs_create_file(&dev->kobj,
2049                                                 it87_attributes_temp_offset[i]);
2050                         if (err)
2051                                 goto error;
2052                 }
2053                 if (sio_data->beep_pin) {
2054                         err = sysfs_create_file(&dev->kobj,
2055                                                 it87_attributes_temp_beep[i]);
2056                         if (err)
2057                                 goto error;
2058                 }
2059         }
2060
2061         /* Do not create fan files for disabled fans */
2062         fan_beep_need_rw = 1;
2063         for (i = 0; i < 5; i++) {
2064                 if (!(data->has_fan & (1 << i)))
2065                         continue;
2066                 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
2067                 if (err)
2068                         goto error;
2069
2070                 if (i < 3 && !has_16bit_fans(data)) {
2071                         err = sysfs_create_file(&dev->kobj,
2072                                                 it87_attributes_fan_div[i]);
2073                         if (err)
2074                                 goto error;
2075                 }
2076
2077                 if (sio_data->beep_pin) {
2078                         err = sysfs_create_file(&dev->kobj,
2079                                                 it87_attributes_fan_beep[i]);
2080                         if (err)
2081                                 goto error;
2082                         if (!fan_beep_need_rw)
2083                                 continue;
2084
2085                         /*
2086                          * As we have a single beep enable bit for all fans,
2087                          * only the first enabled fan has a writable attribute
2088                          * for it.
2089                          */
2090                         if (sysfs_chmod_file(&dev->kobj,
2091                                              it87_attributes_fan_beep[i],
2092                                              S_IRUGO | S_IWUSR))
2093                                 dev_dbg(dev, "chmod +w fan%d_beep failed\n",
2094                                         i + 1);
2095                         fan_beep_need_rw = 0;
2096                 }
2097         }
2098
2099         if (enable_pwm_interface) {
2100                 for (i = 0; i < 3; i++) {
2101                         if (sio_data->skip_pwm & (1 << i))
2102                                 continue;
2103                         err = sysfs_create_group(&dev->kobj,
2104                                                  &it87_group_pwm[i]);
2105                         if (err)
2106                                 goto error;
2107
2108                         if (!has_old_autopwm(data))
2109                                 continue;
2110                         err = sysfs_create_group(&dev->kobj,
2111                                                  &it87_group_autopwm[i]);
2112                         if (err)
2113                                 goto error;
2114                 }
2115         }
2116
2117         if (!sio_data->skip_vid) {
2118                 data->vrm = vid_which_vrm();
2119                 /* VID reading from Super-I/O config space if available */
2120                 data->vid = sio_data->vid_value;
2121                 err = sysfs_create_group(&dev->kobj, &it87_group_vid);
2122                 if (err)
2123                         goto error;
2124         }
2125
2126         /* Export labels for internal sensors */
2127         for (i = 0; i < 3; i++) {
2128                 if (!(sio_data->internal & (1 << i)))
2129                         continue;
2130                 err = sysfs_create_file(&dev->kobj,
2131                                         it87_attributes_label[i]);
2132                 if (err)
2133                         goto error;
2134         }
2135
2136         data->hwmon_dev = hwmon_device_register(dev);
2137         if (IS_ERR(data->hwmon_dev)) {
2138                 err = PTR_ERR(data->hwmon_dev);
2139                 goto error;
2140         }
2141
2142         return 0;
2143
2144 error:
2145         it87_remove_files(dev);
2146         return err;
2147 }
2148
2149 static int it87_remove(struct platform_device *pdev)
2150 {
2151         struct it87_data *data = platform_get_drvdata(pdev);
2152
2153         hwmon_device_unregister(data->hwmon_dev);
2154         it87_remove_files(&pdev->dev);
2155
2156         return 0;
2157 }
2158
2159 /*
2160  * Must be called with data->update_lock held, except during initialization.
2161  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2162  * would slow down the IT87 access and should not be necessary.
2163  */
2164 static int it87_read_value(struct it87_data *data, u8 reg)
2165 {
2166         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2167         return inb_p(data->addr + IT87_DATA_REG_OFFSET);
2168 }
2169
2170 /*
2171  * Must be called with data->update_lock held, except during initialization.
2172  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
2173  * would slow down the IT87 access and should not be necessary.
2174  */
2175 static void it87_write_value(struct it87_data *data, u8 reg, u8 value)
2176 {
2177         outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
2178         outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
2179 }
2180
2181 /* Return 1 if and only if the PWM interface is safe to use */
2182 static int it87_check_pwm(struct device *dev)
2183 {
2184         struct it87_data *data = dev_get_drvdata(dev);
2185         /*
2186          * Some BIOSes fail to correctly configure the IT87 fans. All fans off
2187          * and polarity set to active low is sign that this is the case so we
2188          * disable pwm control to protect the user.
2189          */
2190         int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
2191         if ((tmp & 0x87) == 0) {
2192                 if (fix_pwm_polarity) {
2193                         /*
2194                          * The user asks us to attempt a chip reconfiguration.
2195                          * This means switching to active high polarity and
2196                          * inverting all fan speed values.
2197                          */
2198                         int i;
2199                         u8 pwm[3];
2200
2201                         for (i = 0; i < 3; i++)
2202                                 pwm[i] = it87_read_value(data,
2203                                                          IT87_REG_PWM(i));
2204
2205                         /*
2206                          * If any fan is in automatic pwm mode, the polarity
2207                          * might be correct, as suspicious as it seems, so we
2208                          * better don't change anything (but still disable the
2209                          * PWM interface).
2210                          */
2211                         if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
2212                                 dev_info(dev,
2213                                          "Reconfiguring PWM to active high polarity\n");
2214                                 it87_write_value(data, IT87_REG_FAN_CTL,
2215                                                  tmp | 0x87);
2216                                 for (i = 0; i < 3; i++)
2217                                         it87_write_value(data,
2218                                                          IT87_REG_PWM(i),
2219                                                          0x7f & ~pwm[i]);
2220                                 return 1;
2221                         }
2222
2223                         dev_info(dev,
2224                                  "PWM configuration is too broken to be fixed\n");
2225                 }
2226
2227                 dev_info(dev,
2228                          "Detected broken BIOS defaults, disabling PWM interface\n");
2229                 return 0;
2230         } else if (fix_pwm_polarity) {
2231                 dev_info(dev,
2232                          "PWM configuration looks sane, won't touch\n");
2233         }
2234
2235         return 1;
2236 }
2237
2238 /* Called when we have found a new IT87. */
2239 static void it87_init_device(struct platform_device *pdev)
2240 {
2241         struct it87_sio_data *sio_data = pdev->dev.platform_data;
2242         struct it87_data *data = platform_get_drvdata(pdev);
2243         int tmp, i;
2244         u8 mask;
2245
2246         /*
2247          * For each PWM channel:
2248          * - If it is in automatic mode, setting to manual mode should set
2249          *   the fan to full speed by default.
2250          * - If it is in manual mode, we need a mapping to temperature
2251          *   channels to use when later setting to automatic mode later.
2252          *   Use a 1:1 mapping by default (we are clueless.)
2253          * In both cases, the value can (and should) be changed by the user
2254          * prior to switching to a different mode.
2255          * Note that this is no longer needed for the IT8721F and later, as
2256          * these have separate registers for the temperature mapping and the
2257          * manual duty cycle.
2258          */
2259         for (i = 0; i < 3; i++) {
2260                 data->pwm_temp_map[i] = i;
2261                 data->pwm_duty[i] = 0x7f;       /* Full speed */
2262                 data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
2263         }
2264
2265         /*
2266          * Some chips seem to have default value 0xff for all limit
2267          * registers. For low voltage limits it makes no sense and triggers
2268          * alarms, so change to 0 instead. For high temperature limits, it
2269          * means -1 degree C, which surprisingly doesn't trigger an alarm,
2270          * but is still confusing, so change to 127 degrees C.
2271          */
2272         for (i = 0; i < 8; i++) {
2273                 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
2274                 if (tmp == 0xff)
2275                         it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
2276         }
2277         for (i = 0; i < 3; i++) {
2278                 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2279                 if (tmp == 0xff)
2280                         it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
2281         }
2282
2283         /*
2284          * Temperature channels are not forcibly enabled, as they can be
2285          * set to two different sensor types and we can't guess which one
2286          * is correct for a given system. These channels can be enabled at
2287          * run-time through the temp{1-3}_type sysfs accessors if needed.
2288          */
2289
2290         /* Check if voltage monitors are reset manually or by some reason */
2291         tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
2292         if ((tmp & 0xff) == 0) {
2293                 /* Enable all voltage monitors */
2294                 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
2295         }
2296
2297         /* Check if tachometers are reset manually or by some reason */
2298         mask = 0x70 & ~(sio_data->skip_fan << 4);
2299         data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
2300         if ((data->fan_main_ctrl & mask) == 0) {
2301                 /* Enable all fan tachometers */
2302                 data->fan_main_ctrl |= mask;
2303                 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
2304                                  data->fan_main_ctrl);
2305         }
2306         data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
2307
2308         /* Set tachometers to 16-bit mode if needed */
2309         if (has_16bit_fans(data)) {
2310                 tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
2311                 if (~tmp & 0x07 & data->has_fan) {
2312                         dev_dbg(&pdev->dev,
2313                                 "Setting fan1-3 to 16-bit mode\n");
2314                         it87_write_value(data, IT87_REG_FAN_16BIT,
2315                                          tmp | 0x07);
2316                 }
2317                 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
2318                 if (data->type != it87 && data->type != it8782 &&
2319                     data->type != it8783) {
2320                         if (tmp & (1 << 4))
2321                                 data->has_fan |= (1 << 3); /* fan4 enabled */
2322                         if (tmp & (1 << 5))
2323                                 data->has_fan |= (1 << 4); /* fan5 enabled */
2324                 }
2325         }
2326
2327         /* Fan input pins may be used for alternative functions */
2328         data->has_fan &= ~sio_data->skip_fan;
2329
2330         /* Start monitoring */
2331         it87_write_value(data, IT87_REG_CONFIG,
2332                          (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
2333                          | (update_vbat ? 0x41 : 0x01));
2334 }
2335
2336 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
2337 {
2338         data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
2339         if (has_newer_autopwm(data)) {
2340                 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2341                 data->pwm_duty[nr] = it87_read_value(data,
2342                                                      IT87_REG_PWM_DUTY(nr));
2343         } else {
2344                 if (data->pwm_ctrl[nr] & 0x80)  /* Automatic mode */
2345                         data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
2346                 else                            /* Manual mode */
2347                         data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
2348         }
2349
2350         if (has_old_autopwm(data)) {
2351                 int i;
2352
2353                 for (i = 0; i < 5 ; i++)
2354                         data->auto_temp[nr][i] = it87_read_value(data,
2355                                                 IT87_REG_AUTO_TEMP(nr, i));
2356                 for (i = 0; i < 3 ; i++)
2357                         data->auto_pwm[nr][i] = it87_read_value(data,
2358                                                 IT87_REG_AUTO_PWM(nr, i));
2359         }
2360 }
2361
2362 static struct it87_data *it87_update_device(struct device *dev)
2363 {
2364         struct it87_data *data = dev_get_drvdata(dev);
2365         int i;
2366
2367         mutex_lock(&data->update_lock);
2368
2369         if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
2370             || !data->valid) {
2371                 if (update_vbat) {
2372                         /*
2373                          * Cleared after each update, so reenable.  Value
2374                          * returned by this read will be previous value
2375                          */
2376                         it87_write_value(data, IT87_REG_CONFIG,
2377                                 it87_read_value(data, IT87_REG_CONFIG) | 0x40);
2378                 }
2379                 for (i = 0; i <= 7; i++) {
2380                         data->in[i][0] =
2381                                 it87_read_value(data, IT87_REG_VIN(i));
2382                         data->in[i][1] =
2383                                 it87_read_value(data, IT87_REG_VIN_MIN(i));
2384                         data->in[i][2] =
2385                                 it87_read_value(data, IT87_REG_VIN_MAX(i));
2386                 }
2387                 /* in8 (battery) has no limit registers */
2388                 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
2389
2390                 for (i = 0; i < 5; i++) {
2391                         /* Skip disabled fans */
2392                         if (!(data->has_fan & (1 << i)))
2393                                 continue;
2394
2395                         data->fan[i][1] =
2396                                 it87_read_value(data, IT87_REG_FAN_MIN[i]);
2397                         data->fan[i][0] = it87_read_value(data,
2398                                        IT87_REG_FAN[i]);
2399                         /* Add high byte if in 16-bit mode */
2400                         if (has_16bit_fans(data)) {
2401                                 data->fan[i][0] |= it87_read_value(data,
2402                                                 IT87_REG_FANX[i]) << 8;
2403                                 data->fan[i][1] |= it87_read_value(data,
2404                                                 IT87_REG_FANX_MIN[i]) << 8;
2405                         }
2406                 }
2407                 for (i = 0; i < 3; i++) {
2408                         if (!(data->has_temp & (1 << i)))
2409                                 continue;
2410                         data->temp[i][0] =
2411                                 it87_read_value(data, IT87_REG_TEMP(i));
2412                         data->temp[i][1] =
2413                                 it87_read_value(data, IT87_REG_TEMP_LOW(i));
2414                         data->temp[i][2] =
2415                                 it87_read_value(data, IT87_REG_TEMP_HIGH(i));
2416                         if (has_temp_offset(data))
2417                                 data->temp[i][3] =
2418                                   it87_read_value(data,
2419                                                   IT87_REG_TEMP_OFFSET[i]);
2420                 }
2421
2422                 /* Newer chips don't have clock dividers */
2423                 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
2424                         i = it87_read_value(data, IT87_REG_FAN_DIV);
2425                         data->fan_div[0] = i & 0x07;
2426                         data->fan_div[1] = (i >> 3) & 0x07;
2427                         data->fan_div[2] = (i & 0x40) ? 3 : 1;
2428                 }
2429
2430                 data->alarms =
2431                         it87_read_value(data, IT87_REG_ALARM1) |
2432                         (it87_read_value(data, IT87_REG_ALARM2) << 8) |
2433                         (it87_read_value(data, IT87_REG_ALARM3) << 16);
2434                 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
2435
2436                 data->fan_main_ctrl = it87_read_value(data,
2437                                 IT87_REG_FAN_MAIN_CTRL);
2438                 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
2439                 for (i = 0; i < 3; i++)
2440                         it87_update_pwm_ctrl(data, i);
2441
2442                 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
2443                 /*
2444                  * The IT8705F does not have VID capability.
2445                  * The IT8718F and later don't use IT87_REG_VID for the
2446                  * same purpose.
2447                  */
2448                 if (data->type == it8712 || data->type == it8716) {
2449                         data->vid = it87_read_value(data, IT87_REG_VID);
2450                         /*
2451                          * The older IT8712F revisions had only 5 VID pins,
2452                          * but we assume it is always safe to read 6 bits.
2453                          */
2454                         data->vid &= 0x3f;
2455                 }
2456                 data->last_updated = jiffies;
2457                 data->valid = 1;
2458         }
2459
2460         mutex_unlock(&data->update_lock);
2461
2462         return data;
2463 }
2464
2465 static int __init it87_device_add(unsigned short address,
2466                                   const struct it87_sio_data *sio_data)
2467 {
2468         struct resource res = {
2469                 .start  = address + IT87_EC_OFFSET,
2470                 .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
2471                 .name   = DRVNAME,
2472                 .flags  = IORESOURCE_IO,
2473         };
2474         int err;
2475
2476         err = acpi_check_resource_conflict(&res);
2477         if (err)
2478                 goto exit;
2479
2480         pdev = platform_device_alloc(DRVNAME, address);
2481         if (!pdev) {
2482                 err = -ENOMEM;
2483                 pr_err("Device allocation failed\n");
2484                 goto exit;
2485         }
2486
2487         err = platform_device_add_resources(pdev, &res, 1);
2488         if (err) {
2489                 pr_err("Device resource addition failed (%d)\n", err);
2490                 goto exit_device_put;
2491         }
2492
2493         err = platform_device_add_data(pdev, sio_data,
2494                                        sizeof(struct it87_sio_data));
2495         if (err) {
2496                 pr_err("Platform data allocation failed\n");
2497                 goto exit_device_put;
2498         }
2499
2500         err = platform_device_add(pdev);
2501         if (err) {
2502                 pr_err("Device addition failed (%d)\n", err);
2503                 goto exit_device_put;
2504         }
2505
2506         return 0;
2507
2508 exit_device_put:
2509         platform_device_put(pdev);
2510 exit:
2511         return err;
2512 }
2513
2514 static int __init sm_it87_init(void)
2515 {
2516         int err;
2517         unsigned short isa_address = 0;
2518         struct it87_sio_data sio_data;
2519
2520         memset(&sio_data, 0, sizeof(struct it87_sio_data));
2521         err = it87_find(&isa_address, &sio_data);
2522         if (err)
2523                 return err;
2524         err = platform_driver_register(&it87_driver);
2525         if (err)
2526                 return err;
2527
2528         err = it87_device_add(isa_address, &sio_data);
2529         if (err) {
2530                 platform_driver_unregister(&it87_driver);
2531                 return err;
2532         }
2533
2534         return 0;
2535 }
2536
2537 static void __exit sm_it87_exit(void)
2538 {
2539         platform_device_unregister(pdev);
2540         platform_driver_unregister(&it87_driver);
2541 }
2542
2543
2544 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>");
2545 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
2546 module_param(update_vbat, bool, 0);
2547 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
2548 module_param(fix_pwm_polarity, bool, 0);
2549 MODULE_PARM_DESC(fix_pwm_polarity,
2550                  "Force PWM polarity to active high (DANGEROUS)");
2551 MODULE_LICENSE("GPL");
2552
2553 module_init(sm_it87_init);
2554 module_exit(sm_it87_exit);