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 * Sis950 A clone of the IT8705F 23 * 24 * Copyright (C) 2001 Chris Gauthron 25 * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org> 26 * 27 * This program is free software; you can redistribute it and/or modify 28 * it under the terms of the GNU General Public License as published by 29 * the Free Software Foundation; either version 2 of the License, or 30 * (at your option) any later version. 31 * 32 * This program is distributed in the hope that it will be useful, 33 * but WITHOUT ANY WARRANTY; without even the implied warranty of 34 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 35 * GNU General Public License for more details. 36 * 37 * You should have received a copy of the GNU General Public License 38 * along with this program; if not, write to the Free Software 39 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 40 */ 41 42 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 43 44 #include <linux/module.h> 45 #include <linux/init.h> 46 #include <linux/slab.h> 47 #include <linux/jiffies.h> 48 #include <linux/platform_device.h> 49 #include <linux/hwmon.h> 50 #include <linux/hwmon-sysfs.h> 51 #include <linux/hwmon-vid.h> 52 #include <linux/err.h> 53 #include <linux/mutex.h> 54 #include <linux/sysfs.h> 55 #include <linux/string.h> 56 #include <linux/dmi.h> 57 #include <linux/acpi.h> 58 #include <linux/io.h> 59 60 #define DRVNAME "it87" 61 62 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728 }; 63 64 static unsigned short force_id; 65 module_param(force_id, ushort, 0); 66 MODULE_PARM_DESC(force_id, "Override the detected device ID"); 67 68 static struct platform_device *pdev; 69 70 #define REG 0x2e /* The register to read/write */ 71 #define DEV 0x07 /* Register: Logical device select */ 72 #define VAL 0x2f /* The value to read/write */ 73 #define PME 0x04 /* The device with the fan registers in it */ 74 75 /* The device with the IT8718F/IT8720F VID value in it */ 76 #define GPIO 0x07 77 78 #define DEVID 0x20 /* Register: Device ID */ 79 #define DEVREV 0x22 /* Register: Device Revision */ 80 81 static inline int superio_inb(int reg) 82 { 83 outb(reg, REG); 84 return inb(VAL); 85 } 86 87 static inline void superio_outb(int reg, int val) 88 { 89 outb(reg, REG); 90 outb(val, VAL); 91 } 92 93 static int superio_inw(int reg) 94 { 95 int val; 96 outb(reg++, REG); 97 val = inb(VAL) << 8; 98 outb(reg, REG); 99 val |= inb(VAL); 100 return val; 101 } 102 103 static inline void superio_select(int ldn) 104 { 105 outb(DEV, REG); 106 outb(ldn, VAL); 107 } 108 109 static inline int superio_enter(void) 110 { 111 /* 112 * Try to reserve REG and REG + 1 for exclusive access. 113 */ 114 if (!request_muxed_region(REG, 2, DRVNAME)) 115 return -EBUSY; 116 117 outb(0x87, REG); 118 outb(0x01, REG); 119 outb(0x55, REG); 120 outb(0x55, REG); 121 return 0; 122 } 123 124 static inline void superio_exit(void) 125 { 126 outb(0x02, REG); 127 outb(0x02, VAL); 128 release_region(REG, 2); 129 } 130 131 /* Logical device 4 registers */ 132 #define IT8712F_DEVID 0x8712 133 #define IT8705F_DEVID 0x8705 134 #define IT8716F_DEVID 0x8716 135 #define IT8718F_DEVID 0x8718 136 #define IT8720F_DEVID 0x8720 137 #define IT8721F_DEVID 0x8721 138 #define IT8726F_DEVID 0x8726 139 #define IT8728F_DEVID 0x8728 140 #define IT87_ACT_REG 0x30 141 #define IT87_BASE_REG 0x60 142 143 /* Logical device 7 registers (IT8712F and later) */ 144 #define IT87_SIO_GPIO3_REG 0x27 145 #define IT87_SIO_GPIO5_REG 0x29 146 #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ 147 #define IT87_SIO_VID_REG 0xfc /* VID value */ 148 #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */ 149 150 /* Update battery voltage after every reading if true */ 151 static bool update_vbat; 152 153 /* Not all BIOSes properly configure the PWM registers */ 154 static bool fix_pwm_polarity; 155 156 /* Many IT87 constants specified below */ 157 158 /* Length of ISA address segment */ 159 #define IT87_EXTENT 8 160 161 /* Length of ISA address segment for Environmental Controller */ 162 #define IT87_EC_EXTENT 2 163 164 /* Offset of EC registers from ISA base address */ 165 #define IT87_EC_OFFSET 5 166 167 /* Where are the ISA address/data registers relative to the EC base address */ 168 #define IT87_ADDR_REG_OFFSET 0 169 #define IT87_DATA_REG_OFFSET 1 170 171 /*----- The IT87 registers -----*/ 172 173 #define IT87_REG_CONFIG 0x00 174 175 #define IT87_REG_ALARM1 0x01 176 #define IT87_REG_ALARM2 0x02 177 #define IT87_REG_ALARM3 0x03 178 179 /* The IT8718F and IT8720F have the VID value in a different register, in 180 Super-I/O configuration space. */ 181 #define IT87_REG_VID 0x0a 182 /* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b 183 for fan divisors. Later IT8712F revisions must use 16-bit tachometer 184 mode. */ 185 #define IT87_REG_FAN_DIV 0x0b 186 #define IT87_REG_FAN_16BIT 0x0c 187 188 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ 189 190 static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; 191 static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; 192 static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; 193 static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; 194 #define IT87_REG_FAN_MAIN_CTRL 0x13 195 #define IT87_REG_FAN_CTL 0x14 196 #define IT87_REG_PWM(nr) (0x15 + (nr)) 197 #define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8) 198 199 #define IT87_REG_VIN(nr) (0x20 + (nr)) 200 #define IT87_REG_TEMP(nr) (0x29 + (nr)) 201 202 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) 203 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) 204 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) 205 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) 206 207 #define IT87_REG_VIN_ENABLE 0x50 208 #define IT87_REG_TEMP_ENABLE 0x51 209 #define IT87_REG_BEEP_ENABLE 0x5c 210 211 #define IT87_REG_CHIPID 0x58 212 213 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i)) 214 #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i)) 215 216 217 struct it87_sio_data { 218 enum chips type; 219 /* Values read from Super-I/O config space */ 220 u8 revision; 221 u8 vid_value; 222 u8 beep_pin; 223 u8 internal; /* Internal sensors can be labeled */ 224 /* Features skipped based on config or DMI */ 225 u8 skip_vid; 226 u8 skip_fan; 227 u8 skip_pwm; 228 }; 229 230 /* For each registered chip, we need to keep some data in memory. 231 The structure is dynamically allocated. */ 232 struct it87_data { 233 struct device *hwmon_dev; 234 enum chips type; 235 u8 revision; 236 237 unsigned short addr; 238 const char *name; 239 struct mutex update_lock; 240 char valid; /* !=0 if following fields are valid */ 241 unsigned long last_updated; /* In jiffies */ 242 243 u16 in_scaled; /* Internal voltage sensors are scaled */ 244 u8 in[9]; /* Register value */ 245 u8 in_max[8]; /* Register value */ 246 u8 in_min[8]; /* Register value */ 247 u8 has_fan; /* Bitfield, fans enabled */ 248 u16 fan[5]; /* Register values, possibly combined */ 249 u16 fan_min[5]; /* Register values, possibly combined */ 250 s8 temp[3]; /* Register value */ 251 s8 temp_high[3]; /* Register value */ 252 s8 temp_low[3]; /* Register value */ 253 u8 sensor; /* Register value */ 254 u8 fan_div[3]; /* Register encoding, shifted right */ 255 u8 vid; /* Register encoding, combined */ 256 u8 vrm; 257 u32 alarms; /* Register encoding, combined */ 258 u8 beeps; /* Register encoding */ 259 u8 fan_main_ctrl; /* Register value */ 260 u8 fan_ctl; /* Register value */ 261 262 /* The following 3 arrays correspond to the same registers up to 263 * the IT8720F. The meaning of bits 6-0 depends on the value of bit 264 * 7, and we want to preserve settings on mode changes, so we have 265 * to track all values separately. 266 * Starting with the IT8721F, the manual PWM duty cycles are stored 267 * in separate registers (8-bit values), so the separate tracking 268 * is no longer needed, but it is still done to keep the driver 269 * simple. */ 270 u8 pwm_ctrl[3]; /* Register value */ 271 u8 pwm_duty[3]; /* Manual PWM value set by user */ 272 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */ 273 274 /* Automatic fan speed control registers */ 275 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */ 276 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */ 277 }; 278 279 static inline int has_12mv_adc(const struct it87_data *data) 280 { 281 /* 282 * IT8721F and later have a 12 mV ADC, also with internal scaling 283 * on selected inputs. 284 */ 285 return data->type == it8721 286 || data->type == it8728; 287 } 288 289 static inline int has_newer_autopwm(const struct it87_data *data) 290 { 291 /* 292 * IT8721F and later have separate registers for the temperature 293 * mapping and the manual duty cycle. 294 */ 295 return data->type == it8721 296 || data->type == it8728; 297 } 298 299 static u8 in_to_reg(const struct it87_data *data, int nr, long val) 300 { 301 long lsb; 302 303 if (has_12mv_adc(data)) { 304 if (data->in_scaled & (1 << nr)) 305 lsb = 24; 306 else 307 lsb = 12; 308 } else 309 lsb = 16; 310 311 val = DIV_ROUND_CLOSEST(val, lsb); 312 return SENSORS_LIMIT(val, 0, 255); 313 } 314 315 static int in_from_reg(const struct it87_data *data, int nr, int val) 316 { 317 if (has_12mv_adc(data)) { 318 if (data->in_scaled & (1 << nr)) 319 return val * 24; 320 else 321 return val * 12; 322 } else 323 return val * 16; 324 } 325 326 static inline u8 FAN_TO_REG(long rpm, int div) 327 { 328 if (rpm == 0) 329 return 255; 330 rpm = SENSORS_LIMIT(rpm, 1, 1000000); 331 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 332 254); 333 } 334 335 static inline u16 FAN16_TO_REG(long rpm) 336 { 337 if (rpm == 0) 338 return 0xffff; 339 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); 340 } 341 342 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \ 343 1350000 / ((val) * (div))) 344 /* The divider is fixed to 2 in 16-bit mode */ 345 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \ 346 1350000 / ((val) * 2)) 347 348 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \ 349 ((val) + 500) / 1000), -128, 127)) 350 #define TEMP_FROM_REG(val) ((val) * 1000) 351 352 static u8 pwm_to_reg(const struct it87_data *data, long val) 353 { 354 if (has_newer_autopwm(data)) 355 return val; 356 else 357 return val >> 1; 358 } 359 360 static int pwm_from_reg(const struct it87_data *data, u8 reg) 361 { 362 if (has_newer_autopwm(data)) 363 return reg; 364 else 365 return (reg & 0x7f) << 1; 366 } 367 368 369 static int DIV_TO_REG(int val) 370 { 371 int answer = 0; 372 while (answer < 7 && (val >>= 1)) 373 answer++; 374 return answer; 375 } 376 #define DIV_FROM_REG(val) (1 << (val)) 377 378 static const unsigned int pwm_freq[8] = { 379 48000000 / 128, 380 24000000 / 128, 381 12000000 / 128, 382 8000000 / 128, 383 6000000 / 128, 384 3000000 / 128, 385 1500000 / 128, 386 750000 / 128, 387 }; 388 389 static inline int has_16bit_fans(const struct it87_data *data) 390 { 391 /* IT8705F Datasheet 0.4.1, 3h == Version G. 392 IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J. 393 These are the first revisions with 16bit tachometer support. */ 394 return (data->type == it87 && data->revision >= 0x03) 395 || (data->type == it8712 && data->revision >= 0x08) 396 || data->type == it8716 397 || data->type == it8718 398 || data->type == it8720 399 || data->type == it8721 400 || data->type == it8728; 401 } 402 403 static inline int has_old_autopwm(const struct it87_data *data) 404 { 405 /* The old automatic fan speed control interface is implemented 406 by IT8705F chips up to revision F and IT8712F chips up to 407 revision G. */ 408 return (data->type == it87 && data->revision < 0x03) 409 || (data->type == it8712 && data->revision < 0x08); 410 } 411 412 static int it87_probe(struct platform_device *pdev); 413 static int __devexit it87_remove(struct platform_device *pdev); 414 415 static int it87_read_value(struct it87_data *data, u8 reg); 416 static void it87_write_value(struct it87_data *data, u8 reg, u8 value); 417 static struct it87_data *it87_update_device(struct device *dev); 418 static int it87_check_pwm(struct device *dev); 419 static void it87_init_device(struct platform_device *pdev); 420 421 422 static struct platform_driver it87_driver = { 423 .driver = { 424 .owner = THIS_MODULE, 425 .name = DRVNAME, 426 }, 427 .probe = it87_probe, 428 .remove = __devexit_p(it87_remove), 429 }; 430 431 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 432 char *buf) 433 { 434 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 435 int nr = sensor_attr->index; 436 437 struct it87_data *data = it87_update_device(dev); 438 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr])); 439 } 440 441 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 442 char *buf) 443 { 444 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 445 int nr = sensor_attr->index; 446 447 struct it87_data *data = it87_update_device(dev); 448 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in_min[nr])); 449 } 450 451 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 452 char *buf) 453 { 454 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 455 int nr = sensor_attr->index; 456 457 struct it87_data *data = it87_update_device(dev); 458 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in_max[nr])); 459 } 460 461 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 462 const char *buf, size_t count) 463 { 464 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 465 int nr = sensor_attr->index; 466 467 struct it87_data *data = dev_get_drvdata(dev); 468 unsigned long val; 469 470 if (kstrtoul(buf, 10, &val) < 0) 471 return -EINVAL; 472 473 mutex_lock(&data->update_lock); 474 data->in_min[nr] = in_to_reg(data, nr, val); 475 it87_write_value(data, IT87_REG_VIN_MIN(nr), 476 data->in_min[nr]); 477 mutex_unlock(&data->update_lock); 478 return count; 479 } 480 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 481 const char *buf, size_t count) 482 { 483 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 484 int nr = sensor_attr->index; 485 486 struct it87_data *data = dev_get_drvdata(dev); 487 unsigned long val; 488 489 if (kstrtoul(buf, 10, &val) < 0) 490 return -EINVAL; 491 492 mutex_lock(&data->update_lock); 493 data->in_max[nr] = in_to_reg(data, nr, val); 494 it87_write_value(data, IT87_REG_VIN_MAX(nr), 495 data->in_max[nr]); 496 mutex_unlock(&data->update_lock); 497 return count; 498 } 499 500 #define show_in_offset(offset) \ 501 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 502 show_in, NULL, offset); 503 504 #define limit_in_offset(offset) \ 505 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 506 show_in_min, set_in_min, offset); \ 507 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 508 show_in_max, set_in_max, offset); 509 510 show_in_offset(0); 511 limit_in_offset(0); 512 show_in_offset(1); 513 limit_in_offset(1); 514 show_in_offset(2); 515 limit_in_offset(2); 516 show_in_offset(3); 517 limit_in_offset(3); 518 show_in_offset(4); 519 limit_in_offset(4); 520 show_in_offset(5); 521 limit_in_offset(5); 522 show_in_offset(6); 523 limit_in_offset(6); 524 show_in_offset(7); 525 limit_in_offset(7); 526 show_in_offset(8); 527 528 /* 3 temperatures */ 529 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 530 char *buf) 531 { 532 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 533 int nr = sensor_attr->index; 534 535 struct it87_data *data = it87_update_device(dev); 536 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); 537 } 538 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 539 char *buf) 540 { 541 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 542 int nr = sensor_attr->index; 543 544 struct it87_data *data = it87_update_device(dev); 545 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); 546 } 547 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, 548 char *buf) 549 { 550 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 551 int nr = sensor_attr->index; 552 553 struct it87_data *data = it87_update_device(dev); 554 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); 555 } 556 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 557 const char *buf, size_t count) 558 { 559 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 560 int nr = sensor_attr->index; 561 562 struct it87_data *data = dev_get_drvdata(dev); 563 long val; 564 565 if (kstrtol(buf, 10, &val) < 0) 566 return -EINVAL; 567 568 mutex_lock(&data->update_lock); 569 data->temp_high[nr] = TEMP_TO_REG(val); 570 it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); 571 mutex_unlock(&data->update_lock); 572 return count; 573 } 574 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, 575 const char *buf, size_t count) 576 { 577 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 578 int nr = sensor_attr->index; 579 580 struct it87_data *data = dev_get_drvdata(dev); 581 long val; 582 583 if (kstrtol(buf, 10, &val) < 0) 584 return -EINVAL; 585 586 mutex_lock(&data->update_lock); 587 data->temp_low[nr] = TEMP_TO_REG(val); 588 it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); 589 mutex_unlock(&data->update_lock); 590 return count; 591 } 592 #define show_temp_offset(offset) \ 593 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 594 show_temp, NULL, offset - 1); \ 595 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 596 show_temp_max, set_temp_max, offset - 1); \ 597 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 598 show_temp_min, set_temp_min, offset - 1); 599 600 show_temp_offset(1); 601 show_temp_offset(2); 602 show_temp_offset(3); 603 604 static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, 605 char *buf) 606 { 607 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 608 int nr = sensor_attr->index; 609 610 struct it87_data *data = it87_update_device(dev); 611 u8 reg = data->sensor; /* In case the value is updated while 612 we use it */ 613 614 if (reg & (1 << nr)) 615 return sprintf(buf, "3\n"); /* thermal diode */ 616 if (reg & (8 << nr)) 617 return sprintf(buf, "4\n"); /* thermistor */ 618 return sprintf(buf, "0\n"); /* disabled */ 619 } 620 static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, 621 const char *buf, size_t count) 622 { 623 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 624 int nr = sensor_attr->index; 625 626 struct it87_data *data = dev_get_drvdata(dev); 627 long val; 628 u8 reg; 629 630 if (kstrtol(buf, 10, &val) < 0) 631 return -EINVAL; 632 633 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); 634 reg &= ~(1 << nr); 635 reg &= ~(8 << nr); 636 if (val == 2) { /* backwards compatibility */ 637 dev_warn(dev, "Sensor type 2 is deprecated, please use 4 " 638 "instead\n"); 639 val = 4; 640 } 641 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */ 642 if (val == 3) 643 reg |= 1 << nr; 644 else if (val == 4) 645 reg |= 8 << nr; 646 else if (val != 0) 647 return -EINVAL; 648 649 mutex_lock(&data->update_lock); 650 data->sensor = reg; 651 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); 652 data->valid = 0; /* Force cache refresh */ 653 mutex_unlock(&data->update_lock); 654 return count; 655 } 656 #define show_sensor_offset(offset) \ 657 static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ 658 show_sensor, set_sensor, offset - 1); 659 660 show_sensor_offset(1); 661 show_sensor_offset(2); 662 show_sensor_offset(3); 663 664 /* 3 Fans */ 665 666 static int pwm_mode(const struct it87_data *data, int nr) 667 { 668 int ctrl = data->fan_main_ctrl & (1 << nr); 669 670 if (ctrl == 0) /* Full speed */ 671 return 0; 672 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 673 return 2; 674 else /* Manual mode */ 675 return 1; 676 } 677 678 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 679 char *buf) 680 { 681 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 682 int nr = sensor_attr->index; 683 684 struct it87_data *data = it87_update_device(dev); 685 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], 686 DIV_FROM_REG(data->fan_div[nr]))); 687 } 688 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, 689 char *buf) 690 { 691 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 692 int nr = sensor_attr->index; 693 694 struct it87_data *data = it87_update_device(dev); 695 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], 696 DIV_FROM_REG(data->fan_div[nr]))); 697 } 698 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, 699 char *buf) 700 { 701 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 702 int nr = sensor_attr->index; 703 704 struct it87_data *data = it87_update_device(dev); 705 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); 706 } 707 static ssize_t show_pwm_enable(struct device *dev, 708 struct device_attribute *attr, char *buf) 709 { 710 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 711 int nr = sensor_attr->index; 712 713 struct it87_data *data = it87_update_device(dev); 714 return sprintf(buf, "%d\n", pwm_mode(data, nr)); 715 } 716 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 717 char *buf) 718 { 719 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 720 int nr = sensor_attr->index; 721 722 struct it87_data *data = it87_update_device(dev); 723 return sprintf(buf, "%d\n", 724 pwm_from_reg(data, data->pwm_duty[nr])); 725 } 726 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, 727 char *buf) 728 { 729 struct it87_data *data = it87_update_device(dev); 730 int index = (data->fan_ctl >> 4) & 0x07; 731 732 return sprintf(buf, "%u\n", pwm_freq[index]); 733 } 734 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 735 const char *buf, size_t count) 736 { 737 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 738 int nr = sensor_attr->index; 739 740 struct it87_data *data = dev_get_drvdata(dev); 741 long val; 742 u8 reg; 743 744 if (kstrtol(buf, 10, &val) < 0) 745 return -EINVAL; 746 747 mutex_lock(&data->update_lock); 748 reg = it87_read_value(data, IT87_REG_FAN_DIV); 749 switch (nr) { 750 case 0: 751 data->fan_div[nr] = reg & 0x07; 752 break; 753 case 1: 754 data->fan_div[nr] = (reg >> 3) & 0x07; 755 break; 756 case 2: 757 data->fan_div[nr] = (reg & 0x40) ? 3 : 1; 758 break; 759 } 760 761 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); 762 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); 763 mutex_unlock(&data->update_lock); 764 return count; 765 } 766 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 767 const char *buf, size_t count) 768 { 769 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 770 int nr = sensor_attr->index; 771 772 struct it87_data *data = dev_get_drvdata(dev); 773 unsigned long val; 774 int min; 775 u8 old; 776 777 if (kstrtoul(buf, 10, &val) < 0) 778 return -EINVAL; 779 780 mutex_lock(&data->update_lock); 781 old = it87_read_value(data, IT87_REG_FAN_DIV); 782 783 /* Save fan min limit */ 784 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); 785 786 switch (nr) { 787 case 0: 788 case 1: 789 data->fan_div[nr] = DIV_TO_REG(val); 790 break; 791 case 2: 792 if (val < 8) 793 data->fan_div[nr] = 1; 794 else 795 data->fan_div[nr] = 3; 796 } 797 val = old & 0x80; 798 val |= (data->fan_div[0] & 0x07); 799 val |= (data->fan_div[1] & 0x07) << 3; 800 if (data->fan_div[2] == 3) 801 val |= 0x1 << 6; 802 it87_write_value(data, IT87_REG_FAN_DIV, val); 803 804 /* Restore fan min limit */ 805 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); 806 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); 807 808 mutex_unlock(&data->update_lock); 809 return count; 810 } 811 812 /* Returns 0 if OK, -EINVAL otherwise */ 813 static int check_trip_points(struct device *dev, int nr) 814 { 815 const struct it87_data *data = dev_get_drvdata(dev); 816 int i, err = 0; 817 818 if (has_old_autopwm(data)) { 819 for (i = 0; i < 3; i++) { 820 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1]) 821 err = -EINVAL; 822 } 823 for (i = 0; i < 2; i++) { 824 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1]) 825 err = -EINVAL; 826 } 827 } 828 829 if (err) { 830 dev_err(dev, "Inconsistent trip points, not switching to " 831 "automatic mode\n"); 832 dev_err(dev, "Adjust the trip points and try again\n"); 833 } 834 return err; 835 } 836 837 static ssize_t set_pwm_enable(struct device *dev, 838 struct device_attribute *attr, const char *buf, size_t count) 839 { 840 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 841 int nr = sensor_attr->index; 842 843 struct it87_data *data = dev_get_drvdata(dev); 844 long val; 845 846 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2) 847 return -EINVAL; 848 849 /* Check trip points before switching to automatic mode */ 850 if (val == 2) { 851 if (check_trip_points(dev, nr) < 0) 852 return -EINVAL; 853 } 854 855 mutex_lock(&data->update_lock); 856 857 if (val == 0) { 858 int tmp; 859 /* make sure the fan is on when in on/off mode */ 860 tmp = it87_read_value(data, IT87_REG_FAN_CTL); 861 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); 862 /* set on/off mode */ 863 data->fan_main_ctrl &= ~(1 << nr); 864 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 865 data->fan_main_ctrl); 866 } else { 867 if (val == 1) /* Manual mode */ 868 data->pwm_ctrl[nr] = has_newer_autopwm(data) ? 869 data->pwm_temp_map[nr] : 870 data->pwm_duty[nr]; 871 else /* Automatic mode */ 872 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 873 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 874 /* set SmartGuardian mode */ 875 data->fan_main_ctrl |= (1 << nr); 876 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 877 data->fan_main_ctrl); 878 } 879 880 mutex_unlock(&data->update_lock); 881 return count; 882 } 883 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 884 const char *buf, size_t count) 885 { 886 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 887 int nr = sensor_attr->index; 888 889 struct it87_data *data = dev_get_drvdata(dev); 890 long val; 891 892 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) 893 return -EINVAL; 894 895 mutex_lock(&data->update_lock); 896 if (has_newer_autopwm(data)) { 897 /* If we are in automatic mode, the PWM duty cycle register 898 * is read-only so we can't write the value */ 899 if (data->pwm_ctrl[nr] & 0x80) { 900 mutex_unlock(&data->update_lock); 901 return -EBUSY; 902 } 903 data->pwm_duty[nr] = pwm_to_reg(data, val); 904 it87_write_value(data, IT87_REG_PWM_DUTY(nr), 905 data->pwm_duty[nr]); 906 } else { 907 data->pwm_duty[nr] = pwm_to_reg(data, val); 908 /* If we are in manual mode, write the duty cycle immediately; 909 * otherwise, just store it for later use. */ 910 if (!(data->pwm_ctrl[nr] & 0x80)) { 911 data->pwm_ctrl[nr] = data->pwm_duty[nr]; 912 it87_write_value(data, IT87_REG_PWM(nr), 913 data->pwm_ctrl[nr]); 914 } 915 } 916 mutex_unlock(&data->update_lock); 917 return count; 918 } 919 static ssize_t set_pwm_freq(struct device *dev, 920 struct device_attribute *attr, const char *buf, size_t count) 921 { 922 struct it87_data *data = dev_get_drvdata(dev); 923 unsigned long val; 924 int i; 925 926 if (kstrtoul(buf, 10, &val) < 0) 927 return -EINVAL; 928 929 /* Search for the nearest available frequency */ 930 for (i = 0; i < 7; i++) { 931 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) 932 break; 933 } 934 935 mutex_lock(&data->update_lock); 936 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; 937 data->fan_ctl |= i << 4; 938 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); 939 mutex_unlock(&data->update_lock); 940 941 return count; 942 } 943 static ssize_t show_pwm_temp_map(struct device *dev, 944 struct device_attribute *attr, char *buf) 945 { 946 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 947 int nr = sensor_attr->index; 948 949 struct it87_data *data = it87_update_device(dev); 950 int map; 951 952 if (data->pwm_temp_map[nr] < 3) 953 map = 1 << data->pwm_temp_map[nr]; 954 else 955 map = 0; /* Should never happen */ 956 return sprintf(buf, "%d\n", map); 957 } 958 static ssize_t set_pwm_temp_map(struct device *dev, 959 struct device_attribute *attr, const char *buf, size_t count) 960 { 961 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 962 int nr = sensor_attr->index; 963 964 struct it87_data *data = dev_get_drvdata(dev); 965 long val; 966 u8 reg; 967 968 /* This check can go away if we ever support automatic fan speed 969 control on newer chips. */ 970 if (!has_old_autopwm(data)) { 971 dev_notice(dev, "Mapping change disabled for safety reasons\n"); 972 return -EINVAL; 973 } 974 975 if (kstrtol(buf, 10, &val) < 0) 976 return -EINVAL; 977 978 switch (val) { 979 case (1 << 0): 980 reg = 0x00; 981 break; 982 case (1 << 1): 983 reg = 0x01; 984 break; 985 case (1 << 2): 986 reg = 0x02; 987 break; 988 default: 989 return -EINVAL; 990 } 991 992 mutex_lock(&data->update_lock); 993 data->pwm_temp_map[nr] = reg; 994 /* If we are in automatic mode, write the temp mapping immediately; 995 * otherwise, just store it for later use. */ 996 if (data->pwm_ctrl[nr] & 0x80) { 997 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 998 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 999 } 1000 mutex_unlock(&data->update_lock); 1001 return count; 1002 } 1003 1004 static ssize_t show_auto_pwm(struct device *dev, 1005 struct device_attribute *attr, char *buf) 1006 { 1007 struct it87_data *data = it87_update_device(dev); 1008 struct sensor_device_attribute_2 *sensor_attr = 1009 to_sensor_dev_attr_2(attr); 1010 int nr = sensor_attr->nr; 1011 int point = sensor_attr->index; 1012 1013 return sprintf(buf, "%d\n", 1014 pwm_from_reg(data, data->auto_pwm[nr][point])); 1015 } 1016 1017 static ssize_t set_auto_pwm(struct device *dev, 1018 struct device_attribute *attr, const char *buf, size_t count) 1019 { 1020 struct it87_data *data = dev_get_drvdata(dev); 1021 struct sensor_device_attribute_2 *sensor_attr = 1022 to_sensor_dev_attr_2(attr); 1023 int nr = sensor_attr->nr; 1024 int point = sensor_attr->index; 1025 long val; 1026 1027 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) 1028 return -EINVAL; 1029 1030 mutex_lock(&data->update_lock); 1031 data->auto_pwm[nr][point] = pwm_to_reg(data, val); 1032 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point), 1033 data->auto_pwm[nr][point]); 1034 mutex_unlock(&data->update_lock); 1035 return count; 1036 } 1037 1038 static ssize_t show_auto_temp(struct device *dev, 1039 struct device_attribute *attr, char *buf) 1040 { 1041 struct it87_data *data = it87_update_device(dev); 1042 struct sensor_device_attribute_2 *sensor_attr = 1043 to_sensor_dev_attr_2(attr); 1044 int nr = sensor_attr->nr; 1045 int point = sensor_attr->index; 1046 1047 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point])); 1048 } 1049 1050 static ssize_t set_auto_temp(struct device *dev, 1051 struct device_attribute *attr, const char *buf, size_t count) 1052 { 1053 struct it87_data *data = dev_get_drvdata(dev); 1054 struct sensor_device_attribute_2 *sensor_attr = 1055 to_sensor_dev_attr_2(attr); 1056 int nr = sensor_attr->nr; 1057 int point = sensor_attr->index; 1058 long val; 1059 1060 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000) 1061 return -EINVAL; 1062 1063 mutex_lock(&data->update_lock); 1064 data->auto_temp[nr][point] = TEMP_TO_REG(val); 1065 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), 1066 data->auto_temp[nr][point]); 1067 mutex_unlock(&data->update_lock); 1068 return count; 1069 } 1070 1071 #define show_fan_offset(offset) \ 1072 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 1073 show_fan, NULL, offset - 1); \ 1074 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 1075 show_fan_min, set_fan_min, offset - 1); \ 1076 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ 1077 show_fan_div, set_fan_div, offset - 1); 1078 1079 show_fan_offset(1); 1080 show_fan_offset(2); 1081 show_fan_offset(3); 1082 1083 #define show_pwm_offset(offset) \ 1084 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ 1085 show_pwm_enable, set_pwm_enable, offset - 1); \ 1086 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 1087 show_pwm, set_pwm, offset - 1); \ 1088 static DEVICE_ATTR(pwm##offset##_freq, \ 1089 (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \ 1090 show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); \ 1091 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels_temp, \ 1092 S_IRUGO | S_IWUSR, show_pwm_temp_map, set_pwm_temp_map, \ 1093 offset - 1); \ 1094 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_pwm, \ 1095 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \ 1096 offset - 1, 0); \ 1097 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_pwm, \ 1098 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \ 1099 offset - 1, 1); \ 1100 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_pwm, \ 1101 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \ 1102 offset - 1, 2); \ 1103 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_pwm, \ 1104 S_IRUGO, show_auto_pwm, NULL, offset - 1, 3); \ 1105 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp, \ 1106 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1107 offset - 1, 1); \ 1108 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp_hyst, \ 1109 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1110 offset - 1, 0); \ 1111 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_temp, \ 1112 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1113 offset - 1, 2); \ 1114 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_temp, \ 1115 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1116 offset - 1, 3); \ 1117 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_temp, \ 1118 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1119 offset - 1, 4); 1120 1121 show_pwm_offset(1); 1122 show_pwm_offset(2); 1123 show_pwm_offset(3); 1124 1125 /* A different set of callbacks for 16-bit fans */ 1126 static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, 1127 char *buf) 1128 { 1129 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1130 int nr = sensor_attr->index; 1131 struct it87_data *data = it87_update_device(dev); 1132 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); 1133 } 1134 1135 static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, 1136 char *buf) 1137 { 1138 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1139 int nr = sensor_attr->index; 1140 struct it87_data *data = it87_update_device(dev); 1141 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); 1142 } 1143 1144 static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, 1145 const char *buf, size_t count) 1146 { 1147 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1148 int nr = sensor_attr->index; 1149 struct it87_data *data = dev_get_drvdata(dev); 1150 long val; 1151 1152 if (kstrtol(buf, 10, &val) < 0) 1153 return -EINVAL; 1154 1155 mutex_lock(&data->update_lock); 1156 data->fan_min[nr] = FAN16_TO_REG(val); 1157 it87_write_value(data, IT87_REG_FAN_MIN[nr], 1158 data->fan_min[nr] & 0xff); 1159 it87_write_value(data, IT87_REG_FANX_MIN[nr], 1160 data->fan_min[nr] >> 8); 1161 mutex_unlock(&data->update_lock); 1162 return count; 1163 } 1164 1165 /* We want to use the same sysfs file names as 8-bit fans, but we need 1166 different variable names, so we have to use SENSOR_ATTR instead of 1167 SENSOR_DEVICE_ATTR. */ 1168 #define show_fan16_offset(offset) \ 1169 static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ 1170 = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ 1171 show_fan16, NULL, offset - 1); \ 1172 static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ 1173 = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 1174 show_fan16_min, set_fan16_min, offset - 1) 1175 1176 show_fan16_offset(1); 1177 show_fan16_offset(2); 1178 show_fan16_offset(3); 1179 show_fan16_offset(4); 1180 show_fan16_offset(5); 1181 1182 /* Alarms */ 1183 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, 1184 char *buf) 1185 { 1186 struct it87_data *data = it87_update_device(dev); 1187 return sprintf(buf, "%u\n", data->alarms); 1188 } 1189 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 1190 1191 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 1192 char *buf) 1193 { 1194 int bitnr = to_sensor_dev_attr(attr)->index; 1195 struct it87_data *data = it87_update_device(dev); 1196 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 1197 } 1198 1199 static ssize_t clear_intrusion(struct device *dev, struct device_attribute 1200 *attr, const char *buf, size_t count) 1201 { 1202 struct it87_data *data = dev_get_drvdata(dev); 1203 long val; 1204 int config; 1205 1206 if (kstrtol(buf, 10, &val) < 0 || val != 0) 1207 return -EINVAL; 1208 1209 mutex_lock(&data->update_lock); 1210 config = it87_read_value(data, IT87_REG_CONFIG); 1211 if (config < 0) { 1212 count = config; 1213 } else { 1214 config |= 1 << 5; 1215 it87_write_value(data, IT87_REG_CONFIG, config); 1216 /* Invalidate cache to force re-read */ 1217 data->valid = 0; 1218 } 1219 mutex_unlock(&data->update_lock); 1220 1221 return count; 1222 } 1223 1224 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); 1225 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); 1226 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); 1227 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11); 1228 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12); 1229 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13); 1230 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14); 1231 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15); 1232 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0); 1233 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1); 1234 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2); 1235 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3); 1236 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); 1237 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); 1238 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); 1239 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); 1240 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR, 1241 show_alarm, clear_intrusion, 4); 1242 1243 static ssize_t show_beep(struct device *dev, struct device_attribute *attr, 1244 char *buf) 1245 { 1246 int bitnr = to_sensor_dev_attr(attr)->index; 1247 struct it87_data *data = it87_update_device(dev); 1248 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1); 1249 } 1250 static ssize_t set_beep(struct device *dev, struct device_attribute *attr, 1251 const char *buf, size_t count) 1252 { 1253 int bitnr = to_sensor_dev_attr(attr)->index; 1254 struct it87_data *data = dev_get_drvdata(dev); 1255 long val; 1256 1257 if (kstrtol(buf, 10, &val) < 0 1258 || (val != 0 && val != 1)) 1259 return -EINVAL; 1260 1261 mutex_lock(&data->update_lock); 1262 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 1263 if (val) 1264 data->beeps |= (1 << bitnr); 1265 else 1266 data->beeps &= ~(1 << bitnr); 1267 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps); 1268 mutex_unlock(&data->update_lock); 1269 return count; 1270 } 1271 1272 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, 1273 show_beep, set_beep, 1); 1274 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1); 1275 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1); 1276 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1); 1277 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1); 1278 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1); 1279 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1); 1280 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1); 1281 /* fanX_beep writability is set later */ 1282 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0); 1283 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0); 1284 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0); 1285 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0); 1286 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0); 1287 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, 1288 show_beep, set_beep, 2); 1289 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2); 1290 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2); 1291 1292 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, 1293 char *buf) 1294 { 1295 struct it87_data *data = dev_get_drvdata(dev); 1296 return sprintf(buf, "%u\n", data->vrm); 1297 } 1298 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, 1299 const char *buf, size_t count) 1300 { 1301 struct it87_data *data = dev_get_drvdata(dev); 1302 unsigned long val; 1303 1304 if (kstrtoul(buf, 10, &val) < 0) 1305 return -EINVAL; 1306 1307 data->vrm = val; 1308 1309 return count; 1310 } 1311 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 1312 1313 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, 1314 char *buf) 1315 { 1316 struct it87_data *data = it87_update_device(dev); 1317 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); 1318 } 1319 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 1320 1321 static ssize_t show_label(struct device *dev, struct device_attribute *attr, 1322 char *buf) 1323 { 1324 static const char *labels[] = { 1325 "+5V", 1326 "5VSB", 1327 "Vbat", 1328 }; 1329 static const char *labels_it8721[] = { 1330 "+3.3V", 1331 "3VSB", 1332 "Vbat", 1333 }; 1334 struct it87_data *data = dev_get_drvdata(dev); 1335 int nr = to_sensor_dev_attr(attr)->index; 1336 1337 return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr] 1338 : labels[nr]); 1339 } 1340 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0); 1341 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1); 1342 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2); 1343 1344 static ssize_t show_name(struct device *dev, struct device_attribute 1345 *devattr, char *buf) 1346 { 1347 struct it87_data *data = dev_get_drvdata(dev); 1348 return sprintf(buf, "%s\n", data->name); 1349 } 1350 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); 1351 1352 static struct attribute *it87_attributes[] = { 1353 &sensor_dev_attr_in0_input.dev_attr.attr, 1354 &sensor_dev_attr_in1_input.dev_attr.attr, 1355 &sensor_dev_attr_in2_input.dev_attr.attr, 1356 &sensor_dev_attr_in3_input.dev_attr.attr, 1357 &sensor_dev_attr_in4_input.dev_attr.attr, 1358 &sensor_dev_attr_in5_input.dev_attr.attr, 1359 &sensor_dev_attr_in6_input.dev_attr.attr, 1360 &sensor_dev_attr_in7_input.dev_attr.attr, 1361 &sensor_dev_attr_in8_input.dev_attr.attr, 1362 &sensor_dev_attr_in0_min.dev_attr.attr, 1363 &sensor_dev_attr_in1_min.dev_attr.attr, 1364 &sensor_dev_attr_in2_min.dev_attr.attr, 1365 &sensor_dev_attr_in3_min.dev_attr.attr, 1366 &sensor_dev_attr_in4_min.dev_attr.attr, 1367 &sensor_dev_attr_in5_min.dev_attr.attr, 1368 &sensor_dev_attr_in6_min.dev_attr.attr, 1369 &sensor_dev_attr_in7_min.dev_attr.attr, 1370 &sensor_dev_attr_in0_max.dev_attr.attr, 1371 &sensor_dev_attr_in1_max.dev_attr.attr, 1372 &sensor_dev_attr_in2_max.dev_attr.attr, 1373 &sensor_dev_attr_in3_max.dev_attr.attr, 1374 &sensor_dev_attr_in4_max.dev_attr.attr, 1375 &sensor_dev_attr_in5_max.dev_attr.attr, 1376 &sensor_dev_attr_in6_max.dev_attr.attr, 1377 &sensor_dev_attr_in7_max.dev_attr.attr, 1378 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1379 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1380 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1381 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1382 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1383 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1384 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1385 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1386 1387 &sensor_dev_attr_temp1_input.dev_attr.attr, 1388 &sensor_dev_attr_temp2_input.dev_attr.attr, 1389 &sensor_dev_attr_temp3_input.dev_attr.attr, 1390 &sensor_dev_attr_temp1_max.dev_attr.attr, 1391 &sensor_dev_attr_temp2_max.dev_attr.attr, 1392 &sensor_dev_attr_temp3_max.dev_attr.attr, 1393 &sensor_dev_attr_temp1_min.dev_attr.attr, 1394 &sensor_dev_attr_temp2_min.dev_attr.attr, 1395 &sensor_dev_attr_temp3_min.dev_attr.attr, 1396 &sensor_dev_attr_temp1_type.dev_attr.attr, 1397 &sensor_dev_attr_temp2_type.dev_attr.attr, 1398 &sensor_dev_attr_temp3_type.dev_attr.attr, 1399 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1400 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1401 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1402 1403 &dev_attr_alarms.attr, 1404 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr, 1405 &dev_attr_name.attr, 1406 NULL 1407 }; 1408 1409 static const struct attribute_group it87_group = { 1410 .attrs = it87_attributes, 1411 }; 1412 1413 static struct attribute *it87_attributes_beep[] = { 1414 &sensor_dev_attr_in0_beep.dev_attr.attr, 1415 &sensor_dev_attr_in1_beep.dev_attr.attr, 1416 &sensor_dev_attr_in2_beep.dev_attr.attr, 1417 &sensor_dev_attr_in3_beep.dev_attr.attr, 1418 &sensor_dev_attr_in4_beep.dev_attr.attr, 1419 &sensor_dev_attr_in5_beep.dev_attr.attr, 1420 &sensor_dev_attr_in6_beep.dev_attr.attr, 1421 &sensor_dev_attr_in7_beep.dev_attr.attr, 1422 1423 &sensor_dev_attr_temp1_beep.dev_attr.attr, 1424 &sensor_dev_attr_temp2_beep.dev_attr.attr, 1425 &sensor_dev_attr_temp3_beep.dev_attr.attr, 1426 NULL 1427 }; 1428 1429 static const struct attribute_group it87_group_beep = { 1430 .attrs = it87_attributes_beep, 1431 }; 1432 1433 static struct attribute *it87_attributes_fan16[5][3+1] = { { 1434 &sensor_dev_attr_fan1_input16.dev_attr.attr, 1435 &sensor_dev_attr_fan1_min16.dev_attr.attr, 1436 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1437 NULL 1438 }, { 1439 &sensor_dev_attr_fan2_input16.dev_attr.attr, 1440 &sensor_dev_attr_fan2_min16.dev_attr.attr, 1441 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1442 NULL 1443 }, { 1444 &sensor_dev_attr_fan3_input16.dev_attr.attr, 1445 &sensor_dev_attr_fan3_min16.dev_attr.attr, 1446 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1447 NULL 1448 }, { 1449 &sensor_dev_attr_fan4_input16.dev_attr.attr, 1450 &sensor_dev_attr_fan4_min16.dev_attr.attr, 1451 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1452 NULL 1453 }, { 1454 &sensor_dev_attr_fan5_input16.dev_attr.attr, 1455 &sensor_dev_attr_fan5_min16.dev_attr.attr, 1456 &sensor_dev_attr_fan5_alarm.dev_attr.attr, 1457 NULL 1458 } }; 1459 1460 static const struct attribute_group it87_group_fan16[5] = { 1461 { .attrs = it87_attributes_fan16[0] }, 1462 { .attrs = it87_attributes_fan16[1] }, 1463 { .attrs = it87_attributes_fan16[2] }, 1464 { .attrs = it87_attributes_fan16[3] }, 1465 { .attrs = it87_attributes_fan16[4] }, 1466 }; 1467 1468 static struct attribute *it87_attributes_fan[3][4+1] = { { 1469 &sensor_dev_attr_fan1_input.dev_attr.attr, 1470 &sensor_dev_attr_fan1_min.dev_attr.attr, 1471 &sensor_dev_attr_fan1_div.dev_attr.attr, 1472 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1473 NULL 1474 }, { 1475 &sensor_dev_attr_fan2_input.dev_attr.attr, 1476 &sensor_dev_attr_fan2_min.dev_attr.attr, 1477 &sensor_dev_attr_fan2_div.dev_attr.attr, 1478 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1479 NULL 1480 }, { 1481 &sensor_dev_attr_fan3_input.dev_attr.attr, 1482 &sensor_dev_attr_fan3_min.dev_attr.attr, 1483 &sensor_dev_attr_fan3_div.dev_attr.attr, 1484 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1485 NULL 1486 } }; 1487 1488 static const struct attribute_group it87_group_fan[3] = { 1489 { .attrs = it87_attributes_fan[0] }, 1490 { .attrs = it87_attributes_fan[1] }, 1491 { .attrs = it87_attributes_fan[2] }, 1492 }; 1493 1494 static const struct attribute_group * 1495 it87_get_fan_group(const struct it87_data *data) 1496 { 1497 return has_16bit_fans(data) ? it87_group_fan16 : it87_group_fan; 1498 } 1499 1500 static struct attribute *it87_attributes_pwm[3][4+1] = { { 1501 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1502 &sensor_dev_attr_pwm1.dev_attr.attr, 1503 &dev_attr_pwm1_freq.attr, 1504 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1505 NULL 1506 }, { 1507 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1508 &sensor_dev_attr_pwm2.dev_attr.attr, 1509 &dev_attr_pwm2_freq.attr, 1510 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1511 NULL 1512 }, { 1513 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1514 &sensor_dev_attr_pwm3.dev_attr.attr, 1515 &dev_attr_pwm3_freq.attr, 1516 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1517 NULL 1518 } }; 1519 1520 static const struct attribute_group it87_group_pwm[3] = { 1521 { .attrs = it87_attributes_pwm[0] }, 1522 { .attrs = it87_attributes_pwm[1] }, 1523 { .attrs = it87_attributes_pwm[2] }, 1524 }; 1525 1526 static struct attribute *it87_attributes_autopwm[3][9+1] = { { 1527 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1528 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1529 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, 1530 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, 1531 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, 1532 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, 1533 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, 1534 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, 1535 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, 1536 NULL 1537 }, { 1538 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1539 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1540 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, 1541 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, 1542 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, 1543 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr, 1544 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, 1545 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, 1546 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, 1547 NULL 1548 }, { 1549 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1550 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1551 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr, 1552 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr, 1553 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, 1554 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr, 1555 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, 1556 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr, 1557 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr, 1558 NULL 1559 } }; 1560 1561 static const struct attribute_group it87_group_autopwm[3] = { 1562 { .attrs = it87_attributes_autopwm[0] }, 1563 { .attrs = it87_attributes_autopwm[1] }, 1564 { .attrs = it87_attributes_autopwm[2] }, 1565 }; 1566 1567 static struct attribute *it87_attributes_fan_beep[] = { 1568 &sensor_dev_attr_fan1_beep.dev_attr.attr, 1569 &sensor_dev_attr_fan2_beep.dev_attr.attr, 1570 &sensor_dev_attr_fan3_beep.dev_attr.attr, 1571 &sensor_dev_attr_fan4_beep.dev_attr.attr, 1572 &sensor_dev_attr_fan5_beep.dev_attr.attr, 1573 }; 1574 1575 static struct attribute *it87_attributes_vid[] = { 1576 &dev_attr_vrm.attr, 1577 &dev_attr_cpu0_vid.attr, 1578 NULL 1579 }; 1580 1581 static const struct attribute_group it87_group_vid = { 1582 .attrs = it87_attributes_vid, 1583 }; 1584 1585 static struct attribute *it87_attributes_label[] = { 1586 &sensor_dev_attr_in3_label.dev_attr.attr, 1587 &sensor_dev_attr_in7_label.dev_attr.attr, 1588 &sensor_dev_attr_in8_label.dev_attr.attr, 1589 NULL 1590 }; 1591 1592 static const struct attribute_group it87_group_label = { 1593 .attrs = it87_attributes_label, 1594 }; 1595 1596 /* SuperIO detection - will change isa_address if a chip is found */ 1597 static int __init it87_find(unsigned short *address, 1598 struct it87_sio_data *sio_data) 1599 { 1600 int err; 1601 u16 chip_type; 1602 const char *board_vendor, *board_name; 1603 1604 err = superio_enter(); 1605 if (err) 1606 return err; 1607 1608 err = -ENODEV; 1609 chip_type = force_id ? force_id : superio_inw(DEVID); 1610 1611 switch (chip_type) { 1612 case IT8705F_DEVID: 1613 sio_data->type = it87; 1614 break; 1615 case IT8712F_DEVID: 1616 sio_data->type = it8712; 1617 break; 1618 case IT8716F_DEVID: 1619 case IT8726F_DEVID: 1620 sio_data->type = it8716; 1621 break; 1622 case IT8718F_DEVID: 1623 sio_data->type = it8718; 1624 break; 1625 case IT8720F_DEVID: 1626 sio_data->type = it8720; 1627 break; 1628 case IT8721F_DEVID: 1629 sio_data->type = it8721; 1630 break; 1631 case IT8728F_DEVID: 1632 sio_data->type = it8728; 1633 break; 1634 case 0xffff: /* No device at all */ 1635 goto exit; 1636 default: 1637 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type); 1638 goto exit; 1639 } 1640 1641 superio_select(PME); 1642 if (!(superio_inb(IT87_ACT_REG) & 0x01)) { 1643 pr_info("Device not activated, skipping\n"); 1644 goto exit; 1645 } 1646 1647 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); 1648 if (*address == 0) { 1649 pr_info("Base address not set, skipping\n"); 1650 goto exit; 1651 } 1652 1653 err = 0; 1654 sio_data->revision = superio_inb(DEVREV) & 0x0f; 1655 pr_info("Found IT%04xF chip at 0x%x, revision %d\n", 1656 chip_type, *address, sio_data->revision); 1657 1658 /* in8 (Vbat) is always internal */ 1659 sio_data->internal = (1 << 2); 1660 1661 /* Read GPIO config and VID value from LDN 7 (GPIO) */ 1662 if (sio_data->type == it87) { 1663 /* The IT8705F doesn't have VID pins at all */ 1664 sio_data->skip_vid = 1; 1665 1666 /* The IT8705F has a different LD number for GPIO */ 1667 superio_select(5); 1668 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1669 } else { 1670 int reg; 1671 1672 superio_select(GPIO); 1673 1674 reg = superio_inb(IT87_SIO_GPIO3_REG); 1675 if (sio_data->type == it8721 || sio_data->type == it8728) { 1676 /* 1677 * The IT8721F/IT8758E doesn't have VID pins at all, 1678 * not sure about the IT8728F. 1679 */ 1680 sio_data->skip_vid = 1; 1681 } else { 1682 /* We need at least 4 VID pins */ 1683 if (reg & 0x0f) { 1684 pr_info("VID is disabled (pins used for GPIO)\n"); 1685 sio_data->skip_vid = 1; 1686 } 1687 } 1688 1689 /* Check if fan3 is there or not */ 1690 if (reg & (1 << 6)) 1691 sio_data->skip_pwm |= (1 << 2); 1692 if (reg & (1 << 7)) 1693 sio_data->skip_fan |= (1 << 2); 1694 1695 /* Check if fan2 is there or not */ 1696 reg = superio_inb(IT87_SIO_GPIO5_REG); 1697 if (reg & (1 << 1)) 1698 sio_data->skip_pwm |= (1 << 1); 1699 if (reg & (1 << 2)) 1700 sio_data->skip_fan |= (1 << 1); 1701 1702 if ((sio_data->type == it8718 || sio_data->type == it8720) 1703 && !(sio_data->skip_vid)) 1704 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); 1705 1706 reg = superio_inb(IT87_SIO_PINX2_REG); 1707 /* 1708 * The IT8720F has no VIN7 pin, so VCCH should always be 1709 * routed internally to VIN7 with an internal divider. 1710 * Curiously, there still is a configuration bit to control 1711 * this, which means it can be set incorrectly. And even 1712 * more curiously, many boards out there are improperly 1713 * configured, even though the IT8720F datasheet claims 1714 * that the internal routing of VCCH to VIN7 is the default 1715 * setting. So we force the internal routing in this case. 1716 */ 1717 if (sio_data->type == it8720 && !(reg & (1 << 1))) { 1718 reg |= (1 << 1); 1719 superio_outb(IT87_SIO_PINX2_REG, reg); 1720 pr_notice("Routing internal VCCH to in7\n"); 1721 } 1722 if (reg & (1 << 0)) 1723 sio_data->internal |= (1 << 0); 1724 if ((reg & (1 << 1)) || sio_data->type == it8721 || 1725 sio_data->type == it8728) 1726 sio_data->internal |= (1 << 1); 1727 1728 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1729 } 1730 if (sio_data->beep_pin) 1731 pr_info("Beeping is supported\n"); 1732 1733 /* Disable specific features based on DMI strings */ 1734 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); 1735 board_name = dmi_get_system_info(DMI_BOARD_NAME); 1736 if (board_vendor && board_name) { 1737 if (strcmp(board_vendor, "nVIDIA") == 0 1738 && strcmp(board_name, "FN68PT") == 0) { 1739 /* On the Shuttle SN68PT, FAN_CTL2 is apparently not 1740 connected to a fan, but to something else. One user 1741 has reported instant system power-off when changing 1742 the PWM2 duty cycle, so we disable it. 1743 I use the board name string as the trigger in case 1744 the same board is ever used in other systems. */ 1745 pr_info("Disabling pwm2 due to hardware constraints\n"); 1746 sio_data->skip_pwm = (1 << 1); 1747 } 1748 } 1749 1750 exit: 1751 superio_exit(); 1752 return err; 1753 } 1754 1755 static void it87_remove_files(struct device *dev) 1756 { 1757 struct it87_data *data = platform_get_drvdata(pdev); 1758 struct it87_sio_data *sio_data = dev->platform_data; 1759 const struct attribute_group *fan_group = it87_get_fan_group(data); 1760 int i; 1761 1762 sysfs_remove_group(&dev->kobj, &it87_group); 1763 if (sio_data->beep_pin) 1764 sysfs_remove_group(&dev->kobj, &it87_group_beep); 1765 for (i = 0; i < 5; i++) { 1766 if (!(data->has_fan & (1 << i))) 1767 continue; 1768 sysfs_remove_group(&dev->kobj, &fan_group[i]); 1769 if (sio_data->beep_pin) 1770 sysfs_remove_file(&dev->kobj, 1771 it87_attributes_fan_beep[i]); 1772 } 1773 for (i = 0; i < 3; i++) { 1774 if (sio_data->skip_pwm & (1 << 0)) 1775 continue; 1776 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]); 1777 if (has_old_autopwm(data)) 1778 sysfs_remove_group(&dev->kobj, 1779 &it87_group_autopwm[i]); 1780 } 1781 if (!sio_data->skip_vid) 1782 sysfs_remove_group(&dev->kobj, &it87_group_vid); 1783 sysfs_remove_group(&dev->kobj, &it87_group_label); 1784 } 1785 1786 static int __devinit it87_probe(struct platform_device *pdev) 1787 { 1788 struct it87_data *data; 1789 struct resource *res; 1790 struct device *dev = &pdev->dev; 1791 struct it87_sio_data *sio_data = dev->platform_data; 1792 const struct attribute_group *fan_group; 1793 int err = 0, i; 1794 int enable_pwm_interface; 1795 int fan_beep_need_rw; 1796 static const char *names[] = { 1797 "it87", 1798 "it8712", 1799 "it8716", 1800 "it8718", 1801 "it8720", 1802 "it8721", 1803 "it8728", 1804 }; 1805 1806 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 1807 if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) { 1808 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", 1809 (unsigned long)res->start, 1810 (unsigned long)(res->start + IT87_EC_EXTENT - 1)); 1811 err = -EBUSY; 1812 goto ERROR0; 1813 } 1814 1815 data = kzalloc(sizeof(struct it87_data), GFP_KERNEL); 1816 if (!data) { 1817 err = -ENOMEM; 1818 goto ERROR1; 1819 } 1820 1821 data->addr = res->start; 1822 data->type = sio_data->type; 1823 data->revision = sio_data->revision; 1824 data->name = names[sio_data->type]; 1825 1826 /* Now, we do the remaining detection. */ 1827 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) 1828 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) { 1829 err = -ENODEV; 1830 goto ERROR2; 1831 } 1832 1833 platform_set_drvdata(pdev, data); 1834 1835 mutex_init(&data->update_lock); 1836 1837 /* Check PWM configuration */ 1838 enable_pwm_interface = it87_check_pwm(dev); 1839 1840 /* Starting with IT8721F, we handle scaling of internal voltages */ 1841 if (has_12mv_adc(data)) { 1842 if (sio_data->internal & (1 << 0)) 1843 data->in_scaled |= (1 << 3); /* in3 is AVCC */ 1844 if (sio_data->internal & (1 << 1)) 1845 data->in_scaled |= (1 << 7); /* in7 is VSB */ 1846 if (sio_data->internal & (1 << 2)) 1847 data->in_scaled |= (1 << 8); /* in8 is Vbat */ 1848 } 1849 1850 /* Initialize the IT87 chip */ 1851 it87_init_device(pdev); 1852 1853 /* Register sysfs hooks */ 1854 err = sysfs_create_group(&dev->kobj, &it87_group); 1855 if (err) 1856 goto ERROR2; 1857 1858 if (sio_data->beep_pin) { 1859 err = sysfs_create_group(&dev->kobj, &it87_group_beep); 1860 if (err) 1861 goto ERROR4; 1862 } 1863 1864 /* Do not create fan files for disabled fans */ 1865 fan_group = it87_get_fan_group(data); 1866 fan_beep_need_rw = 1; 1867 for (i = 0; i < 5; i++) { 1868 if (!(data->has_fan & (1 << i))) 1869 continue; 1870 err = sysfs_create_group(&dev->kobj, &fan_group[i]); 1871 if (err) 1872 goto ERROR4; 1873 1874 if (sio_data->beep_pin) { 1875 err = sysfs_create_file(&dev->kobj, 1876 it87_attributes_fan_beep[i]); 1877 if (err) 1878 goto ERROR4; 1879 if (!fan_beep_need_rw) 1880 continue; 1881 1882 /* As we have a single beep enable bit for all fans, 1883 * only the first enabled fan has a writable attribute 1884 * for it. */ 1885 if (sysfs_chmod_file(&dev->kobj, 1886 it87_attributes_fan_beep[i], 1887 S_IRUGO | S_IWUSR)) 1888 dev_dbg(dev, "chmod +w fan%d_beep failed\n", 1889 i + 1); 1890 fan_beep_need_rw = 0; 1891 } 1892 } 1893 1894 if (enable_pwm_interface) { 1895 for (i = 0; i < 3; i++) { 1896 if (sio_data->skip_pwm & (1 << i)) 1897 continue; 1898 err = sysfs_create_group(&dev->kobj, 1899 &it87_group_pwm[i]); 1900 if (err) 1901 goto ERROR4; 1902 1903 if (!has_old_autopwm(data)) 1904 continue; 1905 err = sysfs_create_group(&dev->kobj, 1906 &it87_group_autopwm[i]); 1907 if (err) 1908 goto ERROR4; 1909 } 1910 } 1911 1912 if (!sio_data->skip_vid) { 1913 data->vrm = vid_which_vrm(); 1914 /* VID reading from Super-I/O config space if available */ 1915 data->vid = sio_data->vid_value; 1916 err = sysfs_create_group(&dev->kobj, &it87_group_vid); 1917 if (err) 1918 goto ERROR4; 1919 } 1920 1921 /* Export labels for internal sensors */ 1922 for (i = 0; i < 3; i++) { 1923 if (!(sio_data->internal & (1 << i))) 1924 continue; 1925 err = sysfs_create_file(&dev->kobj, 1926 it87_attributes_label[i]); 1927 if (err) 1928 goto ERROR4; 1929 } 1930 1931 data->hwmon_dev = hwmon_device_register(dev); 1932 if (IS_ERR(data->hwmon_dev)) { 1933 err = PTR_ERR(data->hwmon_dev); 1934 goto ERROR4; 1935 } 1936 1937 return 0; 1938 1939 ERROR4: 1940 it87_remove_files(dev); 1941 ERROR2: 1942 platform_set_drvdata(pdev, NULL); 1943 kfree(data); 1944 ERROR1: 1945 release_region(res->start, IT87_EC_EXTENT); 1946 ERROR0: 1947 return err; 1948 } 1949 1950 static int __devexit it87_remove(struct platform_device *pdev) 1951 { 1952 struct it87_data *data = platform_get_drvdata(pdev); 1953 1954 hwmon_device_unregister(data->hwmon_dev); 1955 it87_remove_files(&pdev->dev); 1956 1957 release_region(data->addr, IT87_EC_EXTENT); 1958 platform_set_drvdata(pdev, NULL); 1959 kfree(data); 1960 1961 return 0; 1962 } 1963 1964 /* Must be called with data->update_lock held, except during initialization. 1965 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 1966 would slow down the IT87 access and should not be necessary. */ 1967 static int it87_read_value(struct it87_data *data, u8 reg) 1968 { 1969 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 1970 return inb_p(data->addr + IT87_DATA_REG_OFFSET); 1971 } 1972 1973 /* Must be called with data->update_lock held, except during initialization. 1974 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 1975 would slow down the IT87 access and should not be necessary. */ 1976 static void it87_write_value(struct it87_data *data, u8 reg, u8 value) 1977 { 1978 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 1979 outb_p(value, data->addr + IT87_DATA_REG_OFFSET); 1980 } 1981 1982 /* Return 1 if and only if the PWM interface is safe to use */ 1983 static int __devinit it87_check_pwm(struct device *dev) 1984 { 1985 struct it87_data *data = dev_get_drvdata(dev); 1986 /* Some BIOSes fail to correctly configure the IT87 fans. All fans off 1987 * and polarity set to active low is sign that this is the case so we 1988 * disable pwm control to protect the user. */ 1989 int tmp = it87_read_value(data, IT87_REG_FAN_CTL); 1990 if ((tmp & 0x87) == 0) { 1991 if (fix_pwm_polarity) { 1992 /* The user asks us to attempt a chip reconfiguration. 1993 * This means switching to active high polarity and 1994 * inverting all fan speed values. */ 1995 int i; 1996 u8 pwm[3]; 1997 1998 for (i = 0; i < 3; i++) 1999 pwm[i] = it87_read_value(data, 2000 IT87_REG_PWM(i)); 2001 2002 /* If any fan is in automatic pwm mode, the polarity 2003 * might be correct, as suspicious as it seems, so we 2004 * better don't change anything (but still disable the 2005 * PWM interface). */ 2006 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { 2007 dev_info(dev, "Reconfiguring PWM to " 2008 "active high polarity\n"); 2009 it87_write_value(data, IT87_REG_FAN_CTL, 2010 tmp | 0x87); 2011 for (i = 0; i < 3; i++) 2012 it87_write_value(data, 2013 IT87_REG_PWM(i), 2014 0x7f & ~pwm[i]); 2015 return 1; 2016 } 2017 2018 dev_info(dev, "PWM configuration is " 2019 "too broken to be fixed\n"); 2020 } 2021 2022 dev_info(dev, "Detected broken BIOS " 2023 "defaults, disabling PWM interface\n"); 2024 return 0; 2025 } else if (fix_pwm_polarity) { 2026 dev_info(dev, "PWM configuration looks " 2027 "sane, won't touch\n"); 2028 } 2029 2030 return 1; 2031 } 2032 2033 /* Called when we have found a new IT87. */ 2034 static void __devinit it87_init_device(struct platform_device *pdev) 2035 { 2036 struct it87_sio_data *sio_data = pdev->dev.platform_data; 2037 struct it87_data *data = platform_get_drvdata(pdev); 2038 int tmp, i; 2039 u8 mask; 2040 2041 /* For each PWM channel: 2042 * - If it is in automatic mode, setting to manual mode should set 2043 * the fan to full speed by default. 2044 * - If it is in manual mode, we need a mapping to temperature 2045 * channels to use when later setting to automatic mode later. 2046 * Use a 1:1 mapping by default (we are clueless.) 2047 * In both cases, the value can (and should) be changed by the user 2048 * prior to switching to a different mode. 2049 * Note that this is no longer needed for the IT8721F and later, as 2050 * these have separate registers for the temperature mapping and the 2051 * manual duty cycle. */ 2052 for (i = 0; i < 3; i++) { 2053 data->pwm_temp_map[i] = i; 2054 data->pwm_duty[i] = 0x7f; /* Full speed */ 2055 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */ 2056 } 2057 2058 /* Some chips seem to have default value 0xff for all limit 2059 * registers. For low voltage limits it makes no sense and triggers 2060 * alarms, so change to 0 instead. For high temperature limits, it 2061 * means -1 degree C, which surprisingly doesn't trigger an alarm, 2062 * but is still confusing, so change to 127 degrees C. */ 2063 for (i = 0; i < 8; i++) { 2064 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); 2065 if (tmp == 0xff) 2066 it87_write_value(data, IT87_REG_VIN_MIN(i), 0); 2067 } 2068 for (i = 0; i < 3; i++) { 2069 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 2070 if (tmp == 0xff) 2071 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); 2072 } 2073 2074 /* Temperature channels are not forcibly enabled, as they can be 2075 * set to two different sensor types and we can't guess which one 2076 * is correct for a given system. These channels can be enabled at 2077 * run-time through the temp{1-3}_type sysfs accessors if needed. */ 2078 2079 /* Check if voltage monitors are reset manually or by some reason */ 2080 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); 2081 if ((tmp & 0xff) == 0) { 2082 /* Enable all voltage monitors */ 2083 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); 2084 } 2085 2086 /* Check if tachometers are reset manually or by some reason */ 2087 mask = 0x70 & ~(sio_data->skip_fan << 4); 2088 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); 2089 if ((data->fan_main_ctrl & mask) == 0) { 2090 /* Enable all fan tachometers */ 2091 data->fan_main_ctrl |= mask; 2092 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 2093 data->fan_main_ctrl); 2094 } 2095 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; 2096 2097 /* Set tachometers to 16-bit mode if needed */ 2098 if (has_16bit_fans(data)) { 2099 tmp = it87_read_value(data, IT87_REG_FAN_16BIT); 2100 if (~tmp & 0x07 & data->has_fan) { 2101 dev_dbg(&pdev->dev, 2102 "Setting fan1-3 to 16-bit mode\n"); 2103 it87_write_value(data, IT87_REG_FAN_16BIT, 2104 tmp | 0x07); 2105 } 2106 /* IT8705F only supports three fans. */ 2107 if (data->type != it87) { 2108 if (tmp & (1 << 4)) 2109 data->has_fan |= (1 << 3); /* fan4 enabled */ 2110 if (tmp & (1 << 5)) 2111 data->has_fan |= (1 << 4); /* fan5 enabled */ 2112 } 2113 } 2114 2115 /* Fan input pins may be used for alternative functions */ 2116 data->has_fan &= ~sio_data->skip_fan; 2117 2118 /* Start monitoring */ 2119 it87_write_value(data, IT87_REG_CONFIG, 2120 (it87_read_value(data, IT87_REG_CONFIG) & 0x36) 2121 | (update_vbat ? 0x41 : 0x01)); 2122 } 2123 2124 static void it87_update_pwm_ctrl(struct it87_data *data, int nr) 2125 { 2126 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr)); 2127 if (has_newer_autopwm(data)) { 2128 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; 2129 data->pwm_duty[nr] = it87_read_value(data, 2130 IT87_REG_PWM_DUTY(nr)); 2131 } else { 2132 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 2133 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; 2134 else /* Manual mode */ 2135 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f; 2136 } 2137 2138 if (has_old_autopwm(data)) { 2139 int i; 2140 2141 for (i = 0; i < 5 ; i++) 2142 data->auto_temp[nr][i] = it87_read_value(data, 2143 IT87_REG_AUTO_TEMP(nr, i)); 2144 for (i = 0; i < 3 ; i++) 2145 data->auto_pwm[nr][i] = it87_read_value(data, 2146 IT87_REG_AUTO_PWM(nr, i)); 2147 } 2148 } 2149 2150 static struct it87_data *it87_update_device(struct device *dev) 2151 { 2152 struct it87_data *data = dev_get_drvdata(dev); 2153 int i; 2154 2155 mutex_lock(&data->update_lock); 2156 2157 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 2158 || !data->valid) { 2159 if (update_vbat) { 2160 /* Cleared after each update, so reenable. Value 2161 returned by this read will be previous value */ 2162 it87_write_value(data, IT87_REG_CONFIG, 2163 it87_read_value(data, IT87_REG_CONFIG) | 0x40); 2164 } 2165 for (i = 0; i <= 7; i++) { 2166 data->in[i] = 2167 it87_read_value(data, IT87_REG_VIN(i)); 2168 data->in_min[i] = 2169 it87_read_value(data, IT87_REG_VIN_MIN(i)); 2170 data->in_max[i] = 2171 it87_read_value(data, IT87_REG_VIN_MAX(i)); 2172 } 2173 /* in8 (battery) has no limit registers */ 2174 data->in[8] = it87_read_value(data, IT87_REG_VIN(8)); 2175 2176 for (i = 0; i < 5; i++) { 2177 /* Skip disabled fans */ 2178 if (!(data->has_fan & (1 << i))) 2179 continue; 2180 2181 data->fan_min[i] = 2182 it87_read_value(data, IT87_REG_FAN_MIN[i]); 2183 data->fan[i] = it87_read_value(data, 2184 IT87_REG_FAN[i]); 2185 /* Add high byte if in 16-bit mode */ 2186 if (has_16bit_fans(data)) { 2187 data->fan[i] |= it87_read_value(data, 2188 IT87_REG_FANX[i]) << 8; 2189 data->fan_min[i] |= it87_read_value(data, 2190 IT87_REG_FANX_MIN[i]) << 8; 2191 } 2192 } 2193 for (i = 0; i < 3; i++) { 2194 data->temp[i] = 2195 it87_read_value(data, IT87_REG_TEMP(i)); 2196 data->temp_high[i] = 2197 it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 2198 data->temp_low[i] = 2199 it87_read_value(data, IT87_REG_TEMP_LOW(i)); 2200 } 2201 2202 /* Newer chips don't have clock dividers */ 2203 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) { 2204 i = it87_read_value(data, IT87_REG_FAN_DIV); 2205 data->fan_div[0] = i & 0x07; 2206 data->fan_div[1] = (i >> 3) & 0x07; 2207 data->fan_div[2] = (i & 0x40) ? 3 : 1; 2208 } 2209 2210 data->alarms = 2211 it87_read_value(data, IT87_REG_ALARM1) | 2212 (it87_read_value(data, IT87_REG_ALARM2) << 8) | 2213 (it87_read_value(data, IT87_REG_ALARM3) << 16); 2214 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 2215 2216 data->fan_main_ctrl = it87_read_value(data, 2217 IT87_REG_FAN_MAIN_CTRL); 2218 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); 2219 for (i = 0; i < 3; i++) 2220 it87_update_pwm_ctrl(data, i); 2221 2222 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); 2223 /* The 8705 does not have VID capability. 2224 The 8718 and later don't use IT87_REG_VID for the 2225 same purpose. */ 2226 if (data->type == it8712 || data->type == it8716) { 2227 data->vid = it87_read_value(data, IT87_REG_VID); 2228 /* The older IT8712F revisions had only 5 VID pins, 2229 but we assume it is always safe to read 6 bits. */ 2230 data->vid &= 0x3f; 2231 } 2232 data->last_updated = jiffies; 2233 data->valid = 1; 2234 } 2235 2236 mutex_unlock(&data->update_lock); 2237 2238 return data; 2239 } 2240 2241 static int __init it87_device_add(unsigned short address, 2242 const struct it87_sio_data *sio_data) 2243 { 2244 struct resource res = { 2245 .start = address + IT87_EC_OFFSET, 2246 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, 2247 .name = DRVNAME, 2248 .flags = IORESOURCE_IO, 2249 }; 2250 int err; 2251 2252 err = acpi_check_resource_conflict(&res); 2253 if (err) 2254 goto exit; 2255 2256 pdev = platform_device_alloc(DRVNAME, address); 2257 if (!pdev) { 2258 err = -ENOMEM; 2259 pr_err("Device allocation failed\n"); 2260 goto exit; 2261 } 2262 2263 err = platform_device_add_resources(pdev, &res, 1); 2264 if (err) { 2265 pr_err("Device resource addition failed (%d)\n", err); 2266 goto exit_device_put; 2267 } 2268 2269 err = platform_device_add_data(pdev, sio_data, 2270 sizeof(struct it87_sio_data)); 2271 if (err) { 2272 pr_err("Platform data allocation failed\n"); 2273 goto exit_device_put; 2274 } 2275 2276 err = platform_device_add(pdev); 2277 if (err) { 2278 pr_err("Device addition failed (%d)\n", err); 2279 goto exit_device_put; 2280 } 2281 2282 return 0; 2283 2284 exit_device_put: 2285 platform_device_put(pdev); 2286 exit: 2287 return err; 2288 } 2289 2290 static int __init sm_it87_init(void) 2291 { 2292 int err; 2293 unsigned short isa_address = 0; 2294 struct it87_sio_data sio_data; 2295 2296 memset(&sio_data, 0, sizeof(struct it87_sio_data)); 2297 err = it87_find(&isa_address, &sio_data); 2298 if (err) 2299 return err; 2300 err = platform_driver_register(&it87_driver); 2301 if (err) 2302 return err; 2303 2304 err = it87_device_add(isa_address, &sio_data); 2305 if (err) { 2306 platform_driver_unregister(&it87_driver); 2307 return err; 2308 } 2309 2310 return 0; 2311 } 2312 2313 static void __exit sm_it87_exit(void) 2314 { 2315 platform_device_unregister(pdev); 2316 platform_driver_unregister(&it87_driver); 2317 } 2318 2319 2320 MODULE_AUTHOR("Chris Gauthron, " 2321 "Jean Delvare <khali@linux-fr.org>"); 2322 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver"); 2323 module_param(update_vbat, bool, 0); 2324 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); 2325 module_param(fix_pwm_polarity, bool, 0); 2326 MODULE_PARM_DESC(fix_pwm_polarity, 2327 "Force PWM polarity to active high (DANGEROUS)"); 2328 MODULE_LICENSE("GPL"); 2329 2330 module_init(sm_it87_init); 2331 module_exit(sm_it87_exit); 2332