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 * IT8726F Super I/O chip w/LPC interface 19 * Sis950 A clone of the IT8705F 20 * 21 * Copyright (C) 2001 Chris Gauthron 22 * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org> 23 * 24 * This program is free software; you can redistribute it and/or modify 25 * it under the terms of the GNU General Public License as published by 26 * the Free Software Foundation; either version 2 of the License, or 27 * (at your option) any later version. 28 * 29 * This program is distributed in the hope that it will be useful, 30 * but WITHOUT ANY WARRANTY; without even the implied warranty of 31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 32 * GNU General Public License for more details. 33 * 34 * You should have received a copy of the GNU General Public License 35 * along with this program; if not, write to the Free Software 36 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 37 */ 38 39 #include <linux/module.h> 40 #include <linux/init.h> 41 #include <linux/slab.h> 42 #include <linux/jiffies.h> 43 #include <linux/platform_device.h> 44 #include <linux/hwmon.h> 45 #include <linux/hwmon-sysfs.h> 46 #include <linux/hwmon-vid.h> 47 #include <linux/err.h> 48 #include <linux/mutex.h> 49 #include <linux/sysfs.h> 50 #include <linux/string.h> 51 #include <linux/dmi.h> 52 #include <linux/acpi.h> 53 #include <linux/io.h> 54 55 #define DRVNAME "it87" 56 57 enum chips { it87, it8712, it8716, it8718, it8720 }; 58 59 static unsigned short force_id; 60 module_param(force_id, ushort, 0); 61 MODULE_PARM_DESC(force_id, "Override the detected device ID"); 62 63 static struct platform_device *pdev; 64 65 #define REG 0x2e /* The register to read/write */ 66 #define DEV 0x07 /* Register: Logical device select */ 67 #define VAL 0x2f /* The value to read/write */ 68 #define PME 0x04 /* The device with the fan registers in it */ 69 70 /* The device with the IT8718F/IT8720F VID value in it */ 71 #define GPIO 0x07 72 73 #define DEVID 0x20 /* Register: Device ID */ 74 #define DEVREV 0x22 /* Register: Device Revision */ 75 76 static inline int 77 superio_inb(int reg) 78 { 79 outb(reg, REG); 80 return inb(VAL); 81 } 82 83 static inline void 84 superio_outb(int reg, int val) 85 { 86 outb(reg, REG); 87 outb(val, VAL); 88 } 89 90 static int superio_inw(int reg) 91 { 92 int val; 93 outb(reg++, REG); 94 val = inb(VAL) << 8; 95 outb(reg, REG); 96 val |= inb(VAL); 97 return val; 98 } 99 100 static inline void 101 superio_select(int ldn) 102 { 103 outb(DEV, REG); 104 outb(ldn, VAL); 105 } 106 107 static inline void 108 superio_enter(void) 109 { 110 outb(0x87, REG); 111 outb(0x01, REG); 112 outb(0x55, REG); 113 outb(0x55, REG); 114 } 115 116 static inline void 117 superio_exit(void) 118 { 119 outb(0x02, REG); 120 outb(0x02, VAL); 121 } 122 123 /* Logical device 4 registers */ 124 #define IT8712F_DEVID 0x8712 125 #define IT8705F_DEVID 0x8705 126 #define IT8716F_DEVID 0x8716 127 #define IT8718F_DEVID 0x8718 128 #define IT8720F_DEVID 0x8720 129 #define IT8726F_DEVID 0x8726 130 #define IT87_ACT_REG 0x30 131 #define IT87_BASE_REG 0x60 132 133 /* Logical device 7 registers (IT8712F and later) */ 134 #define IT87_SIO_GPIO3_REG 0x27 135 #define IT87_SIO_GPIO5_REG 0x29 136 #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ 137 #define IT87_SIO_VID_REG 0xfc /* VID value */ 138 #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */ 139 140 /* Update battery voltage after every reading if true */ 141 static int update_vbat; 142 143 /* Not all BIOSes properly configure the PWM registers */ 144 static int fix_pwm_polarity; 145 146 /* Many IT87 constants specified below */ 147 148 /* Length of ISA address segment */ 149 #define IT87_EXTENT 8 150 151 /* Length of ISA address segment for Environmental Controller */ 152 #define IT87_EC_EXTENT 2 153 154 /* Offset of EC registers from ISA base address */ 155 #define IT87_EC_OFFSET 5 156 157 /* Where are the ISA address/data registers relative to the EC base address */ 158 #define IT87_ADDR_REG_OFFSET 0 159 #define IT87_DATA_REG_OFFSET 1 160 161 /*----- The IT87 registers -----*/ 162 163 #define IT87_REG_CONFIG 0x00 164 165 #define IT87_REG_ALARM1 0x01 166 #define IT87_REG_ALARM2 0x02 167 #define IT87_REG_ALARM3 0x03 168 169 /* The IT8718F and IT8720F have the VID value in a different register, in 170 Super-I/O configuration space. */ 171 #define IT87_REG_VID 0x0a 172 /* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b 173 for fan divisors. Later IT8712F revisions must use 16-bit tachometer 174 mode. */ 175 #define IT87_REG_FAN_DIV 0x0b 176 #define IT87_REG_FAN_16BIT 0x0c 177 178 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ 179 180 static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; 181 static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; 182 static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; 183 static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; 184 #define IT87_REG_FAN_MAIN_CTRL 0x13 185 #define IT87_REG_FAN_CTL 0x14 186 #define IT87_REG_PWM(nr) (0x15 + (nr)) 187 188 #define IT87_REG_VIN(nr) (0x20 + (nr)) 189 #define IT87_REG_TEMP(nr) (0x29 + (nr)) 190 191 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) 192 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) 193 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) 194 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) 195 196 #define IT87_REG_VIN_ENABLE 0x50 197 #define IT87_REG_TEMP_ENABLE 0x51 198 #define IT87_REG_BEEP_ENABLE 0x5c 199 200 #define IT87_REG_CHIPID 0x58 201 202 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i)) 203 #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i)) 204 205 #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) 206 #define IN_FROM_REG(val) ((val) * 16) 207 208 static inline u8 FAN_TO_REG(long rpm, int div) 209 { 210 if (rpm == 0) 211 return 255; 212 rpm = SENSORS_LIMIT(rpm, 1, 1000000); 213 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 214 254); 215 } 216 217 static inline u16 FAN16_TO_REG(long rpm) 218 { 219 if (rpm == 0) 220 return 0xffff; 221 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); 222 } 223 224 #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) 225 /* The divider is fixed to 2 in 16-bit mode */ 226 #define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) 227 228 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ 229 ((val)+500)/1000),-128,127)) 230 #define TEMP_FROM_REG(val) ((val) * 1000) 231 232 #define PWM_TO_REG(val) ((val) >> 1) 233 #define PWM_FROM_REG(val) (((val)&0x7f) << 1) 234 235 static int DIV_TO_REG(int val) 236 { 237 int answer = 0; 238 while (answer < 7 && (val >>= 1)) 239 answer++; 240 return answer; 241 } 242 #define DIV_FROM_REG(val) (1 << (val)) 243 244 static const unsigned int pwm_freq[8] = { 245 48000000 / 128, 246 24000000 / 128, 247 12000000 / 128, 248 8000000 / 128, 249 6000000 / 128, 250 3000000 / 128, 251 1500000 / 128, 252 750000 / 128, 253 }; 254 255 256 struct it87_sio_data { 257 enum chips type; 258 /* Values read from Super-I/O config space */ 259 u8 revision; 260 u8 vid_value; 261 u8 beep_pin; 262 /* Features skipped based on config or DMI */ 263 u8 skip_vid; 264 u8 skip_fan; 265 u8 skip_pwm; 266 }; 267 268 /* For each registered chip, we need to keep some data in memory. 269 The structure is dynamically allocated. */ 270 struct it87_data { 271 struct device *hwmon_dev; 272 enum chips type; 273 u8 revision; 274 275 unsigned short addr; 276 const char *name; 277 struct mutex update_lock; 278 char valid; /* !=0 if following fields are valid */ 279 unsigned long last_updated; /* In jiffies */ 280 281 u8 in[9]; /* Register value */ 282 u8 in_max[8]; /* Register value */ 283 u8 in_min[8]; /* Register value */ 284 u8 has_fan; /* Bitfield, fans enabled */ 285 u16 fan[5]; /* Register values, possibly combined */ 286 u16 fan_min[5]; /* Register values, possibly combined */ 287 s8 temp[3]; /* Register value */ 288 s8 temp_high[3]; /* Register value */ 289 s8 temp_low[3]; /* Register value */ 290 u8 sensor; /* Register value */ 291 u8 fan_div[3]; /* Register encoding, shifted right */ 292 u8 vid; /* Register encoding, combined */ 293 u8 vrm; 294 u32 alarms; /* Register encoding, combined */ 295 u8 beeps; /* Register encoding */ 296 u8 fan_main_ctrl; /* Register value */ 297 u8 fan_ctl; /* Register value */ 298 299 /* The following 3 arrays correspond to the same registers. The 300 * meaning of bits 6-0 depends on the value of bit 7, and we want 301 * to preserve settings on mode changes, so we have to track all 302 * values separately. */ 303 u8 pwm_ctrl[3]; /* Register value */ 304 u8 pwm_duty[3]; /* Manual PWM value set by user (bit 6-0) */ 305 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */ 306 307 /* Automatic fan speed control registers */ 308 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */ 309 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */ 310 }; 311 312 static inline int has_16bit_fans(const struct it87_data *data) 313 { 314 /* IT8705F Datasheet 0.4.1, 3h == Version G. 315 IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J. 316 These are the first revisions with 16bit tachometer support. */ 317 return (data->type == it87 && data->revision >= 0x03) 318 || (data->type == it8712 && data->revision >= 0x08) 319 || data->type == it8716 320 || data->type == it8718 321 || data->type == it8720; 322 } 323 324 static inline int has_old_autopwm(const struct it87_data *data) 325 { 326 /* The old automatic fan speed control interface is implemented 327 by IT8705F chips up to revision F and IT8712F chips up to 328 revision G. */ 329 return (data->type == it87 && data->revision < 0x03) 330 || (data->type == it8712 && data->revision < 0x08); 331 } 332 333 static int it87_probe(struct platform_device *pdev); 334 static int __devexit it87_remove(struct platform_device *pdev); 335 336 static int it87_read_value(struct it87_data *data, u8 reg); 337 static void it87_write_value(struct it87_data *data, u8 reg, u8 value); 338 static struct it87_data *it87_update_device(struct device *dev); 339 static int it87_check_pwm(struct device *dev); 340 static void it87_init_device(struct platform_device *pdev); 341 342 343 static struct platform_driver it87_driver = { 344 .driver = { 345 .owner = THIS_MODULE, 346 .name = DRVNAME, 347 }, 348 .probe = it87_probe, 349 .remove = __devexit_p(it87_remove), 350 }; 351 352 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 353 char *buf) 354 { 355 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 356 int nr = sensor_attr->index; 357 358 struct it87_data *data = it87_update_device(dev); 359 return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); 360 } 361 362 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 363 char *buf) 364 { 365 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 366 int nr = sensor_attr->index; 367 368 struct it87_data *data = it87_update_device(dev); 369 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); 370 } 371 372 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 373 char *buf) 374 { 375 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 376 int nr = sensor_attr->index; 377 378 struct it87_data *data = it87_update_device(dev); 379 return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); 380 } 381 382 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 383 const char *buf, size_t count) 384 { 385 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 386 int nr = sensor_attr->index; 387 388 struct it87_data *data = dev_get_drvdata(dev); 389 unsigned long val; 390 391 if (strict_strtoul(buf, 10, &val) < 0) 392 return -EINVAL; 393 394 mutex_lock(&data->update_lock); 395 data->in_min[nr] = IN_TO_REG(val); 396 it87_write_value(data, IT87_REG_VIN_MIN(nr), 397 data->in_min[nr]); 398 mutex_unlock(&data->update_lock); 399 return count; 400 } 401 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 402 const char *buf, size_t count) 403 { 404 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 405 int nr = sensor_attr->index; 406 407 struct it87_data *data = dev_get_drvdata(dev); 408 unsigned long val; 409 410 if (strict_strtoul(buf, 10, &val) < 0) 411 return -EINVAL; 412 413 mutex_lock(&data->update_lock); 414 data->in_max[nr] = IN_TO_REG(val); 415 it87_write_value(data, IT87_REG_VIN_MAX(nr), 416 data->in_max[nr]); 417 mutex_unlock(&data->update_lock); 418 return count; 419 } 420 421 #define show_in_offset(offset) \ 422 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 423 show_in, NULL, offset); 424 425 #define limit_in_offset(offset) \ 426 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 427 show_in_min, set_in_min, offset); \ 428 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 429 show_in_max, set_in_max, offset); 430 431 show_in_offset(0); 432 limit_in_offset(0); 433 show_in_offset(1); 434 limit_in_offset(1); 435 show_in_offset(2); 436 limit_in_offset(2); 437 show_in_offset(3); 438 limit_in_offset(3); 439 show_in_offset(4); 440 limit_in_offset(4); 441 show_in_offset(5); 442 limit_in_offset(5); 443 show_in_offset(6); 444 limit_in_offset(6); 445 show_in_offset(7); 446 limit_in_offset(7); 447 show_in_offset(8); 448 449 /* 3 temperatures */ 450 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 451 char *buf) 452 { 453 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 454 int nr = sensor_attr->index; 455 456 struct it87_data *data = it87_update_device(dev); 457 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); 458 } 459 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 460 char *buf) 461 { 462 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 463 int nr = sensor_attr->index; 464 465 struct it87_data *data = it87_update_device(dev); 466 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); 467 } 468 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, 469 char *buf) 470 { 471 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 472 int nr = sensor_attr->index; 473 474 struct it87_data *data = it87_update_device(dev); 475 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])); 476 } 477 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 478 const char *buf, size_t count) 479 { 480 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 481 int nr = sensor_attr->index; 482 483 struct it87_data *data = dev_get_drvdata(dev); 484 long val; 485 486 if (strict_strtol(buf, 10, &val) < 0) 487 return -EINVAL; 488 489 mutex_lock(&data->update_lock); 490 data->temp_high[nr] = TEMP_TO_REG(val); 491 it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); 492 mutex_unlock(&data->update_lock); 493 return count; 494 } 495 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, 496 const char *buf, size_t count) 497 { 498 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 499 int nr = sensor_attr->index; 500 501 struct it87_data *data = dev_get_drvdata(dev); 502 long val; 503 504 if (strict_strtol(buf, 10, &val) < 0) 505 return -EINVAL; 506 507 mutex_lock(&data->update_lock); 508 data->temp_low[nr] = TEMP_TO_REG(val); 509 it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); 510 mutex_unlock(&data->update_lock); 511 return count; 512 } 513 #define show_temp_offset(offset) \ 514 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 515 show_temp, NULL, offset - 1); \ 516 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 517 show_temp_max, set_temp_max, offset - 1); \ 518 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 519 show_temp_min, set_temp_min, offset - 1); 520 521 show_temp_offset(1); 522 show_temp_offset(2); 523 show_temp_offset(3); 524 525 static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, 526 char *buf) 527 { 528 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 529 int nr = sensor_attr->index; 530 531 struct it87_data *data = it87_update_device(dev); 532 u8 reg = data->sensor; /* In case the value is updated while 533 we use it */ 534 535 if (reg & (1 << nr)) 536 return sprintf(buf, "3\n"); /* thermal diode */ 537 if (reg & (8 << nr)) 538 return sprintf(buf, "4\n"); /* thermistor */ 539 return sprintf(buf, "0\n"); /* disabled */ 540 } 541 static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, 542 const char *buf, size_t count) 543 { 544 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 545 int nr = sensor_attr->index; 546 547 struct it87_data *data = dev_get_drvdata(dev); 548 long val; 549 u8 reg; 550 551 if (strict_strtol(buf, 10, &val) < 0) 552 return -EINVAL; 553 554 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); 555 reg &= ~(1 << nr); 556 reg &= ~(8 << nr); 557 if (val == 2) { /* backwards compatibility */ 558 dev_warn(dev, "Sensor type 2 is deprecated, please use 4 " 559 "instead\n"); 560 val = 4; 561 } 562 /* 3 = thermal diode; 4 = thermistor; 0 = disabled */ 563 if (val == 3) 564 reg |= 1 << nr; 565 else if (val == 4) 566 reg |= 8 << nr; 567 else if (val != 0) 568 return -EINVAL; 569 570 mutex_lock(&data->update_lock); 571 data->sensor = reg; 572 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); 573 data->valid = 0; /* Force cache refresh */ 574 mutex_unlock(&data->update_lock); 575 return count; 576 } 577 #define show_sensor_offset(offset) \ 578 static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ 579 show_sensor, set_sensor, offset - 1); 580 581 show_sensor_offset(1); 582 show_sensor_offset(2); 583 show_sensor_offset(3); 584 585 /* 3 Fans */ 586 587 static int pwm_mode(const struct it87_data *data, int nr) 588 { 589 int ctrl = data->fan_main_ctrl & (1 << nr); 590 591 if (ctrl == 0) /* Full speed */ 592 return 0; 593 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 594 return 2; 595 else /* Manual mode */ 596 return 1; 597 } 598 599 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 600 char *buf) 601 { 602 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 603 int nr = sensor_attr->index; 604 605 struct it87_data *data = it87_update_device(dev); 606 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], 607 DIV_FROM_REG(data->fan_div[nr]))); 608 } 609 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, 610 char *buf) 611 { 612 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 613 int nr = sensor_attr->index; 614 615 struct it87_data *data = it87_update_device(dev); 616 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], 617 DIV_FROM_REG(data->fan_div[nr]))); 618 } 619 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, 620 char *buf) 621 { 622 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 623 int nr = sensor_attr->index; 624 625 struct it87_data *data = it87_update_device(dev); 626 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); 627 } 628 static ssize_t show_pwm_enable(struct device *dev, 629 struct device_attribute *attr, char *buf) 630 { 631 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 632 int nr = sensor_attr->index; 633 634 struct it87_data *data = it87_update_device(dev); 635 return sprintf(buf, "%d\n", pwm_mode(data, nr)); 636 } 637 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 638 char *buf) 639 { 640 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 641 int nr = sensor_attr->index; 642 643 struct it87_data *data = it87_update_device(dev); 644 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm_duty[nr])); 645 } 646 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, 647 char *buf) 648 { 649 struct it87_data *data = it87_update_device(dev); 650 int index = (data->fan_ctl >> 4) & 0x07; 651 652 return sprintf(buf, "%u\n", pwm_freq[index]); 653 } 654 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 655 const char *buf, size_t count) 656 { 657 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 658 int nr = sensor_attr->index; 659 660 struct it87_data *data = dev_get_drvdata(dev); 661 long val; 662 u8 reg; 663 664 if (strict_strtol(buf, 10, &val) < 0) 665 return -EINVAL; 666 667 mutex_lock(&data->update_lock); 668 reg = it87_read_value(data, IT87_REG_FAN_DIV); 669 switch (nr) { 670 case 0: 671 data->fan_div[nr] = reg & 0x07; 672 break; 673 case 1: 674 data->fan_div[nr] = (reg >> 3) & 0x07; 675 break; 676 case 2: 677 data->fan_div[nr] = (reg & 0x40) ? 3 : 1; 678 break; 679 } 680 681 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); 682 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); 683 mutex_unlock(&data->update_lock); 684 return count; 685 } 686 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 687 const char *buf, size_t count) 688 { 689 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 690 int nr = sensor_attr->index; 691 692 struct it87_data *data = dev_get_drvdata(dev); 693 unsigned long val; 694 int min; 695 u8 old; 696 697 if (strict_strtoul(buf, 10, &val) < 0) 698 return -EINVAL; 699 700 mutex_lock(&data->update_lock); 701 old = it87_read_value(data, IT87_REG_FAN_DIV); 702 703 /* Save fan min limit */ 704 min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); 705 706 switch (nr) { 707 case 0: 708 case 1: 709 data->fan_div[nr] = DIV_TO_REG(val); 710 break; 711 case 2: 712 if (val < 8) 713 data->fan_div[nr] = 1; 714 else 715 data->fan_div[nr] = 3; 716 } 717 val = old & 0x80; 718 val |= (data->fan_div[0] & 0x07); 719 val |= (data->fan_div[1] & 0x07) << 3; 720 if (data->fan_div[2] == 3) 721 val |= 0x1 << 6; 722 it87_write_value(data, IT87_REG_FAN_DIV, val); 723 724 /* Restore fan min limit */ 725 data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); 726 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); 727 728 mutex_unlock(&data->update_lock); 729 return count; 730 } 731 732 /* Returns 0 if OK, -EINVAL otherwise */ 733 static int check_trip_points(struct device *dev, int nr) 734 { 735 const struct it87_data *data = dev_get_drvdata(dev); 736 int i, err = 0; 737 738 if (has_old_autopwm(data)) { 739 for (i = 0; i < 3; i++) { 740 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1]) 741 err = -EINVAL; 742 } 743 for (i = 0; i < 2; i++) { 744 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1]) 745 err = -EINVAL; 746 } 747 } 748 749 if (err) { 750 dev_err(dev, "Inconsistent trip points, not switching to " 751 "automatic mode\n"); 752 dev_err(dev, "Adjust the trip points and try again\n"); 753 } 754 return err; 755 } 756 757 static ssize_t set_pwm_enable(struct device *dev, 758 struct device_attribute *attr, const char *buf, size_t count) 759 { 760 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 761 int nr = sensor_attr->index; 762 763 struct it87_data *data = dev_get_drvdata(dev); 764 long val; 765 766 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 2) 767 return -EINVAL; 768 769 /* Check trip points before switching to automatic mode */ 770 if (val == 2) { 771 if (check_trip_points(dev, nr) < 0) 772 return -EINVAL; 773 } 774 775 mutex_lock(&data->update_lock); 776 777 if (val == 0) { 778 int tmp; 779 /* make sure the fan is on when in on/off mode */ 780 tmp = it87_read_value(data, IT87_REG_FAN_CTL); 781 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); 782 /* set on/off mode */ 783 data->fan_main_ctrl &= ~(1 << nr); 784 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 785 data->fan_main_ctrl); 786 } else { 787 if (val == 1) /* Manual mode */ 788 data->pwm_ctrl[nr] = data->pwm_duty[nr]; 789 else /* Automatic mode */ 790 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 791 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 792 /* set SmartGuardian mode */ 793 data->fan_main_ctrl |= (1 << nr); 794 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 795 data->fan_main_ctrl); 796 } 797 798 mutex_unlock(&data->update_lock); 799 return count; 800 } 801 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 802 const char *buf, size_t count) 803 { 804 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 805 int nr = sensor_attr->index; 806 807 struct it87_data *data = dev_get_drvdata(dev); 808 long val; 809 810 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255) 811 return -EINVAL; 812 813 mutex_lock(&data->update_lock); 814 data->pwm_duty[nr] = PWM_TO_REG(val); 815 /* If we are in manual mode, write the duty cycle immediately; 816 * otherwise, just store it for later use. */ 817 if (!(data->pwm_ctrl[nr] & 0x80)) { 818 data->pwm_ctrl[nr] = data->pwm_duty[nr]; 819 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 820 } 821 mutex_unlock(&data->update_lock); 822 return count; 823 } 824 static ssize_t set_pwm_freq(struct device *dev, 825 struct device_attribute *attr, const char *buf, size_t count) 826 { 827 struct it87_data *data = dev_get_drvdata(dev); 828 unsigned long val; 829 int i; 830 831 if (strict_strtoul(buf, 10, &val) < 0) 832 return -EINVAL; 833 834 /* Search for the nearest available frequency */ 835 for (i = 0; i < 7; i++) { 836 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) 837 break; 838 } 839 840 mutex_lock(&data->update_lock); 841 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; 842 data->fan_ctl |= i << 4; 843 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); 844 mutex_unlock(&data->update_lock); 845 846 return count; 847 } 848 static ssize_t show_pwm_temp_map(struct device *dev, 849 struct device_attribute *attr, char *buf) 850 { 851 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 852 int nr = sensor_attr->index; 853 854 struct it87_data *data = it87_update_device(dev); 855 int map; 856 857 if (data->pwm_temp_map[nr] < 3) 858 map = 1 << data->pwm_temp_map[nr]; 859 else 860 map = 0; /* Should never happen */ 861 return sprintf(buf, "%d\n", map); 862 } 863 static ssize_t set_pwm_temp_map(struct device *dev, 864 struct device_attribute *attr, const char *buf, size_t count) 865 { 866 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 867 int nr = sensor_attr->index; 868 869 struct it87_data *data = dev_get_drvdata(dev); 870 long val; 871 u8 reg; 872 873 /* This check can go away if we ever support automatic fan speed 874 control on newer chips. */ 875 if (!has_old_autopwm(data)) { 876 dev_notice(dev, "Mapping change disabled for safety reasons\n"); 877 return -EINVAL; 878 } 879 880 if (strict_strtol(buf, 10, &val) < 0) 881 return -EINVAL; 882 883 switch (val) { 884 case (1 << 0): 885 reg = 0x00; 886 break; 887 case (1 << 1): 888 reg = 0x01; 889 break; 890 case (1 << 2): 891 reg = 0x02; 892 break; 893 default: 894 return -EINVAL; 895 } 896 897 mutex_lock(&data->update_lock); 898 data->pwm_temp_map[nr] = reg; 899 /* If we are in automatic mode, write the temp mapping immediately; 900 * otherwise, just store it for later use. */ 901 if (data->pwm_ctrl[nr] & 0x80) { 902 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 903 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 904 } 905 mutex_unlock(&data->update_lock); 906 return count; 907 } 908 909 static ssize_t show_auto_pwm(struct device *dev, 910 struct device_attribute *attr, char *buf) 911 { 912 struct it87_data *data = it87_update_device(dev); 913 struct sensor_device_attribute_2 *sensor_attr = 914 to_sensor_dev_attr_2(attr); 915 int nr = sensor_attr->nr; 916 int point = sensor_attr->index; 917 918 return sprintf(buf, "%d\n", PWM_FROM_REG(data->auto_pwm[nr][point])); 919 } 920 921 static ssize_t set_auto_pwm(struct device *dev, 922 struct device_attribute *attr, const char *buf, size_t count) 923 { 924 struct it87_data *data = dev_get_drvdata(dev); 925 struct sensor_device_attribute_2 *sensor_attr = 926 to_sensor_dev_attr_2(attr); 927 int nr = sensor_attr->nr; 928 int point = sensor_attr->index; 929 long val; 930 931 if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255) 932 return -EINVAL; 933 934 mutex_lock(&data->update_lock); 935 data->auto_pwm[nr][point] = PWM_TO_REG(val); 936 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point), 937 data->auto_pwm[nr][point]); 938 mutex_unlock(&data->update_lock); 939 return count; 940 } 941 942 static ssize_t show_auto_temp(struct device *dev, 943 struct device_attribute *attr, char *buf) 944 { 945 struct it87_data *data = it87_update_device(dev); 946 struct sensor_device_attribute_2 *sensor_attr = 947 to_sensor_dev_attr_2(attr); 948 int nr = sensor_attr->nr; 949 int point = sensor_attr->index; 950 951 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point])); 952 } 953 954 static ssize_t set_auto_temp(struct device *dev, 955 struct device_attribute *attr, const char *buf, size_t count) 956 { 957 struct it87_data *data = dev_get_drvdata(dev); 958 struct sensor_device_attribute_2 *sensor_attr = 959 to_sensor_dev_attr_2(attr); 960 int nr = sensor_attr->nr; 961 int point = sensor_attr->index; 962 long val; 963 964 if (strict_strtol(buf, 10, &val) < 0 || val < -128000 || val > 127000) 965 return -EINVAL; 966 967 mutex_lock(&data->update_lock); 968 data->auto_temp[nr][point] = TEMP_TO_REG(val); 969 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), 970 data->auto_temp[nr][point]); 971 mutex_unlock(&data->update_lock); 972 return count; 973 } 974 975 #define show_fan_offset(offset) \ 976 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 977 show_fan, NULL, offset - 1); \ 978 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 979 show_fan_min, set_fan_min, offset - 1); \ 980 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ 981 show_fan_div, set_fan_div, offset - 1); 982 983 show_fan_offset(1); 984 show_fan_offset(2); 985 show_fan_offset(3); 986 987 #define show_pwm_offset(offset) \ 988 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ 989 show_pwm_enable, set_pwm_enable, offset - 1); \ 990 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 991 show_pwm, set_pwm, offset - 1); \ 992 static DEVICE_ATTR(pwm##offset##_freq, \ 993 (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \ 994 show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); \ 995 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels_temp, \ 996 S_IRUGO | S_IWUSR, show_pwm_temp_map, set_pwm_temp_map, \ 997 offset - 1); \ 998 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_pwm, \ 999 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \ 1000 offset - 1, 0); \ 1001 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_pwm, \ 1002 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \ 1003 offset - 1, 1); \ 1004 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_pwm, \ 1005 S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \ 1006 offset - 1, 2); \ 1007 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_pwm, \ 1008 S_IRUGO, show_auto_pwm, NULL, offset - 1, 3); \ 1009 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp, \ 1010 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1011 offset - 1, 1); \ 1012 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp_hyst, \ 1013 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1014 offset - 1, 0); \ 1015 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_temp, \ 1016 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1017 offset - 1, 2); \ 1018 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_temp, \ 1019 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1020 offset - 1, 3); \ 1021 static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_temp, \ 1022 S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ 1023 offset - 1, 4); 1024 1025 show_pwm_offset(1); 1026 show_pwm_offset(2); 1027 show_pwm_offset(3); 1028 1029 /* A different set of callbacks for 16-bit fans */ 1030 static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, 1031 char *buf) 1032 { 1033 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1034 int nr = sensor_attr->index; 1035 struct it87_data *data = it87_update_device(dev); 1036 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); 1037 } 1038 1039 static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, 1040 char *buf) 1041 { 1042 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1043 int nr = sensor_attr->index; 1044 struct it87_data *data = it87_update_device(dev); 1045 return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); 1046 } 1047 1048 static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, 1049 const char *buf, size_t count) 1050 { 1051 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1052 int nr = sensor_attr->index; 1053 struct it87_data *data = dev_get_drvdata(dev); 1054 long val; 1055 1056 if (strict_strtol(buf, 10, &val) < 0) 1057 return -EINVAL; 1058 1059 mutex_lock(&data->update_lock); 1060 data->fan_min[nr] = FAN16_TO_REG(val); 1061 it87_write_value(data, IT87_REG_FAN_MIN[nr], 1062 data->fan_min[nr] & 0xff); 1063 it87_write_value(data, IT87_REG_FANX_MIN[nr], 1064 data->fan_min[nr] >> 8); 1065 mutex_unlock(&data->update_lock); 1066 return count; 1067 } 1068 1069 /* We want to use the same sysfs file names as 8-bit fans, but we need 1070 different variable names, so we have to use SENSOR_ATTR instead of 1071 SENSOR_DEVICE_ATTR. */ 1072 #define show_fan16_offset(offset) \ 1073 static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ 1074 = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ 1075 show_fan16, NULL, offset - 1); \ 1076 static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ 1077 = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 1078 show_fan16_min, set_fan16_min, offset - 1) 1079 1080 show_fan16_offset(1); 1081 show_fan16_offset(2); 1082 show_fan16_offset(3); 1083 show_fan16_offset(4); 1084 show_fan16_offset(5); 1085 1086 /* Alarms */ 1087 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, 1088 char *buf) 1089 { 1090 struct it87_data *data = it87_update_device(dev); 1091 return sprintf(buf, "%u\n", data->alarms); 1092 } 1093 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 1094 1095 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 1096 char *buf) 1097 { 1098 int bitnr = to_sensor_dev_attr(attr)->index; 1099 struct it87_data *data = it87_update_device(dev); 1100 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 1101 } 1102 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); 1103 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); 1104 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); 1105 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11); 1106 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12); 1107 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13); 1108 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14); 1109 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15); 1110 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0); 1111 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1); 1112 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2); 1113 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3); 1114 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); 1115 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); 1116 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); 1117 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); 1118 1119 static ssize_t show_beep(struct device *dev, struct device_attribute *attr, 1120 char *buf) 1121 { 1122 int bitnr = to_sensor_dev_attr(attr)->index; 1123 struct it87_data *data = it87_update_device(dev); 1124 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1); 1125 } 1126 static ssize_t set_beep(struct device *dev, struct device_attribute *attr, 1127 const char *buf, size_t count) 1128 { 1129 int bitnr = to_sensor_dev_attr(attr)->index; 1130 struct it87_data *data = dev_get_drvdata(dev); 1131 long val; 1132 1133 if (strict_strtol(buf, 10, &val) < 0 1134 || (val != 0 && val != 1)) 1135 return -EINVAL; 1136 1137 mutex_lock(&data->update_lock); 1138 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 1139 if (val) 1140 data->beeps |= (1 << bitnr); 1141 else 1142 data->beeps &= ~(1 << bitnr); 1143 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps); 1144 mutex_unlock(&data->update_lock); 1145 return count; 1146 } 1147 1148 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, 1149 show_beep, set_beep, 1); 1150 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1); 1151 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1); 1152 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1); 1153 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1); 1154 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1); 1155 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1); 1156 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1); 1157 /* fanX_beep writability is set later */ 1158 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0); 1159 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0); 1160 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0); 1161 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0); 1162 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0); 1163 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, 1164 show_beep, set_beep, 2); 1165 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2); 1166 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2); 1167 1168 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, 1169 char *buf) 1170 { 1171 struct it87_data *data = dev_get_drvdata(dev); 1172 return sprintf(buf, "%u\n", data->vrm); 1173 } 1174 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, 1175 const char *buf, size_t count) 1176 { 1177 struct it87_data *data = dev_get_drvdata(dev); 1178 unsigned long val; 1179 1180 if (strict_strtoul(buf, 10, &val) < 0) 1181 return -EINVAL; 1182 1183 data->vrm = val; 1184 1185 return count; 1186 } 1187 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 1188 1189 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, 1190 char *buf) 1191 { 1192 struct it87_data *data = it87_update_device(dev); 1193 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); 1194 } 1195 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 1196 1197 static ssize_t show_name(struct device *dev, struct device_attribute 1198 *devattr, char *buf) 1199 { 1200 struct it87_data *data = dev_get_drvdata(dev); 1201 return sprintf(buf, "%s\n", data->name); 1202 } 1203 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); 1204 1205 static struct attribute *it87_attributes[] = { 1206 &sensor_dev_attr_in0_input.dev_attr.attr, 1207 &sensor_dev_attr_in1_input.dev_attr.attr, 1208 &sensor_dev_attr_in2_input.dev_attr.attr, 1209 &sensor_dev_attr_in3_input.dev_attr.attr, 1210 &sensor_dev_attr_in4_input.dev_attr.attr, 1211 &sensor_dev_attr_in5_input.dev_attr.attr, 1212 &sensor_dev_attr_in6_input.dev_attr.attr, 1213 &sensor_dev_attr_in7_input.dev_attr.attr, 1214 &sensor_dev_attr_in8_input.dev_attr.attr, 1215 &sensor_dev_attr_in0_min.dev_attr.attr, 1216 &sensor_dev_attr_in1_min.dev_attr.attr, 1217 &sensor_dev_attr_in2_min.dev_attr.attr, 1218 &sensor_dev_attr_in3_min.dev_attr.attr, 1219 &sensor_dev_attr_in4_min.dev_attr.attr, 1220 &sensor_dev_attr_in5_min.dev_attr.attr, 1221 &sensor_dev_attr_in6_min.dev_attr.attr, 1222 &sensor_dev_attr_in7_min.dev_attr.attr, 1223 &sensor_dev_attr_in0_max.dev_attr.attr, 1224 &sensor_dev_attr_in1_max.dev_attr.attr, 1225 &sensor_dev_attr_in2_max.dev_attr.attr, 1226 &sensor_dev_attr_in3_max.dev_attr.attr, 1227 &sensor_dev_attr_in4_max.dev_attr.attr, 1228 &sensor_dev_attr_in5_max.dev_attr.attr, 1229 &sensor_dev_attr_in6_max.dev_attr.attr, 1230 &sensor_dev_attr_in7_max.dev_attr.attr, 1231 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1232 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1233 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1234 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1235 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1236 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1237 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1238 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1239 1240 &sensor_dev_attr_temp1_input.dev_attr.attr, 1241 &sensor_dev_attr_temp2_input.dev_attr.attr, 1242 &sensor_dev_attr_temp3_input.dev_attr.attr, 1243 &sensor_dev_attr_temp1_max.dev_attr.attr, 1244 &sensor_dev_attr_temp2_max.dev_attr.attr, 1245 &sensor_dev_attr_temp3_max.dev_attr.attr, 1246 &sensor_dev_attr_temp1_min.dev_attr.attr, 1247 &sensor_dev_attr_temp2_min.dev_attr.attr, 1248 &sensor_dev_attr_temp3_min.dev_attr.attr, 1249 &sensor_dev_attr_temp1_type.dev_attr.attr, 1250 &sensor_dev_attr_temp2_type.dev_attr.attr, 1251 &sensor_dev_attr_temp3_type.dev_attr.attr, 1252 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1253 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1254 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1255 1256 &dev_attr_alarms.attr, 1257 &dev_attr_name.attr, 1258 NULL 1259 }; 1260 1261 static const struct attribute_group it87_group = { 1262 .attrs = it87_attributes, 1263 }; 1264 1265 static struct attribute *it87_attributes_beep[] = { 1266 &sensor_dev_attr_in0_beep.dev_attr.attr, 1267 &sensor_dev_attr_in1_beep.dev_attr.attr, 1268 &sensor_dev_attr_in2_beep.dev_attr.attr, 1269 &sensor_dev_attr_in3_beep.dev_attr.attr, 1270 &sensor_dev_attr_in4_beep.dev_attr.attr, 1271 &sensor_dev_attr_in5_beep.dev_attr.attr, 1272 &sensor_dev_attr_in6_beep.dev_attr.attr, 1273 &sensor_dev_attr_in7_beep.dev_attr.attr, 1274 1275 &sensor_dev_attr_temp1_beep.dev_attr.attr, 1276 &sensor_dev_attr_temp2_beep.dev_attr.attr, 1277 &sensor_dev_attr_temp3_beep.dev_attr.attr, 1278 NULL 1279 }; 1280 1281 static const struct attribute_group it87_group_beep = { 1282 .attrs = it87_attributes_beep, 1283 }; 1284 1285 static struct attribute *it87_attributes_fan16[5][3+1] = { { 1286 &sensor_dev_attr_fan1_input16.dev_attr.attr, 1287 &sensor_dev_attr_fan1_min16.dev_attr.attr, 1288 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1289 NULL 1290 }, { 1291 &sensor_dev_attr_fan2_input16.dev_attr.attr, 1292 &sensor_dev_attr_fan2_min16.dev_attr.attr, 1293 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1294 NULL 1295 }, { 1296 &sensor_dev_attr_fan3_input16.dev_attr.attr, 1297 &sensor_dev_attr_fan3_min16.dev_attr.attr, 1298 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1299 NULL 1300 }, { 1301 &sensor_dev_attr_fan4_input16.dev_attr.attr, 1302 &sensor_dev_attr_fan4_min16.dev_attr.attr, 1303 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1304 NULL 1305 }, { 1306 &sensor_dev_attr_fan5_input16.dev_attr.attr, 1307 &sensor_dev_attr_fan5_min16.dev_attr.attr, 1308 &sensor_dev_attr_fan5_alarm.dev_attr.attr, 1309 NULL 1310 } }; 1311 1312 static const struct attribute_group it87_group_fan16[5] = { 1313 { .attrs = it87_attributes_fan16[0] }, 1314 { .attrs = it87_attributes_fan16[1] }, 1315 { .attrs = it87_attributes_fan16[2] }, 1316 { .attrs = it87_attributes_fan16[3] }, 1317 { .attrs = it87_attributes_fan16[4] }, 1318 }; 1319 1320 static struct attribute *it87_attributes_fan[3][4+1] = { { 1321 &sensor_dev_attr_fan1_input.dev_attr.attr, 1322 &sensor_dev_attr_fan1_min.dev_attr.attr, 1323 &sensor_dev_attr_fan1_div.dev_attr.attr, 1324 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1325 NULL 1326 }, { 1327 &sensor_dev_attr_fan2_input.dev_attr.attr, 1328 &sensor_dev_attr_fan2_min.dev_attr.attr, 1329 &sensor_dev_attr_fan2_div.dev_attr.attr, 1330 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1331 NULL 1332 }, { 1333 &sensor_dev_attr_fan3_input.dev_attr.attr, 1334 &sensor_dev_attr_fan3_min.dev_attr.attr, 1335 &sensor_dev_attr_fan3_div.dev_attr.attr, 1336 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1337 NULL 1338 } }; 1339 1340 static const struct attribute_group it87_group_fan[3] = { 1341 { .attrs = it87_attributes_fan[0] }, 1342 { .attrs = it87_attributes_fan[1] }, 1343 { .attrs = it87_attributes_fan[2] }, 1344 }; 1345 1346 static const struct attribute_group * 1347 it87_get_fan_group(const struct it87_data *data) 1348 { 1349 return has_16bit_fans(data) ? it87_group_fan16 : it87_group_fan; 1350 } 1351 1352 static struct attribute *it87_attributes_pwm[3][4+1] = { { 1353 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1354 &sensor_dev_attr_pwm1.dev_attr.attr, 1355 &dev_attr_pwm1_freq.attr, 1356 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1357 NULL 1358 }, { 1359 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1360 &sensor_dev_attr_pwm2.dev_attr.attr, 1361 &dev_attr_pwm2_freq.attr, 1362 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1363 NULL 1364 }, { 1365 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1366 &sensor_dev_attr_pwm3.dev_attr.attr, 1367 &dev_attr_pwm3_freq.attr, 1368 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1369 NULL 1370 } }; 1371 1372 static const struct attribute_group it87_group_pwm[3] = { 1373 { .attrs = it87_attributes_pwm[0] }, 1374 { .attrs = it87_attributes_pwm[1] }, 1375 { .attrs = it87_attributes_pwm[2] }, 1376 }; 1377 1378 static struct attribute *it87_attributes_autopwm[3][9+1] = { { 1379 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1380 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1381 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, 1382 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, 1383 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, 1384 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, 1385 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, 1386 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, 1387 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, 1388 NULL 1389 }, { 1390 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1391 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1392 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, 1393 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, 1394 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, 1395 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr, 1396 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, 1397 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, 1398 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, 1399 NULL 1400 }, { 1401 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1402 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1403 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr, 1404 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr, 1405 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, 1406 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr, 1407 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, 1408 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr, 1409 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr, 1410 NULL 1411 } }; 1412 1413 static const struct attribute_group it87_group_autopwm[3] = { 1414 { .attrs = it87_attributes_autopwm[0] }, 1415 { .attrs = it87_attributes_autopwm[1] }, 1416 { .attrs = it87_attributes_autopwm[2] }, 1417 }; 1418 1419 static struct attribute *it87_attributes_fan_beep[] = { 1420 &sensor_dev_attr_fan1_beep.dev_attr.attr, 1421 &sensor_dev_attr_fan2_beep.dev_attr.attr, 1422 &sensor_dev_attr_fan3_beep.dev_attr.attr, 1423 &sensor_dev_attr_fan4_beep.dev_attr.attr, 1424 &sensor_dev_attr_fan5_beep.dev_attr.attr, 1425 }; 1426 1427 static struct attribute *it87_attributes_vid[] = { 1428 &dev_attr_vrm.attr, 1429 &dev_attr_cpu0_vid.attr, 1430 NULL 1431 }; 1432 1433 static const struct attribute_group it87_group_vid = { 1434 .attrs = it87_attributes_vid, 1435 }; 1436 1437 /* SuperIO detection - will change isa_address if a chip is found */ 1438 static int __init it87_find(unsigned short *address, 1439 struct it87_sio_data *sio_data) 1440 { 1441 int err = -ENODEV; 1442 u16 chip_type; 1443 const char *board_vendor, *board_name; 1444 1445 superio_enter(); 1446 chip_type = force_id ? force_id : superio_inw(DEVID); 1447 1448 switch (chip_type) { 1449 case IT8705F_DEVID: 1450 sio_data->type = it87; 1451 break; 1452 case IT8712F_DEVID: 1453 sio_data->type = it8712; 1454 break; 1455 case IT8716F_DEVID: 1456 case IT8726F_DEVID: 1457 sio_data->type = it8716; 1458 break; 1459 case IT8718F_DEVID: 1460 sio_data->type = it8718; 1461 break; 1462 case IT8720F_DEVID: 1463 sio_data->type = it8720; 1464 break; 1465 case 0xffff: /* No device at all */ 1466 goto exit; 1467 default: 1468 pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n", 1469 chip_type); 1470 goto exit; 1471 } 1472 1473 superio_select(PME); 1474 if (!(superio_inb(IT87_ACT_REG) & 0x01)) { 1475 pr_info("it87: Device not activated, skipping\n"); 1476 goto exit; 1477 } 1478 1479 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); 1480 if (*address == 0) { 1481 pr_info("it87: Base address not set, skipping\n"); 1482 goto exit; 1483 } 1484 1485 err = 0; 1486 sio_data->revision = superio_inb(DEVREV) & 0x0f; 1487 pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", 1488 chip_type, *address, sio_data->revision); 1489 1490 /* Read GPIO config and VID value from LDN 7 (GPIO) */ 1491 if (sio_data->type == it87) { 1492 /* The IT8705F doesn't have VID pins at all */ 1493 sio_data->skip_vid = 1; 1494 1495 /* The IT8705F has a different LD number for GPIO */ 1496 superio_select(5); 1497 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1498 } else { 1499 int reg; 1500 1501 superio_select(GPIO); 1502 /* We need at least 4 VID pins */ 1503 reg = superio_inb(IT87_SIO_GPIO3_REG); 1504 if (reg & 0x0f) { 1505 pr_info("it87: VID is disabled (pins used for GPIO)\n"); 1506 sio_data->skip_vid = 1; 1507 } 1508 1509 /* Check if fan3 is there or not */ 1510 if (reg & (1 << 6)) 1511 sio_data->skip_pwm |= (1 << 2); 1512 if (reg & (1 << 7)) 1513 sio_data->skip_fan |= (1 << 2); 1514 1515 /* Check if fan2 is there or not */ 1516 reg = superio_inb(IT87_SIO_GPIO5_REG); 1517 if (reg & (1 << 1)) 1518 sio_data->skip_pwm |= (1 << 1); 1519 if (reg & (1 << 2)) 1520 sio_data->skip_fan |= (1 << 1); 1521 1522 if ((sio_data->type == it8718 || sio_data->type == it8720) 1523 && !(sio_data->skip_vid)) 1524 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); 1525 1526 reg = superio_inb(IT87_SIO_PINX2_REG); 1527 /* 1528 * The IT8720F has no VIN7 pin, so VCCH should always be 1529 * routed internally to VIN7 with an internal divider. 1530 * Curiously, there still is a configuration bit to control 1531 * this, which means it can be set incorrectly. And even 1532 * more curiously, many boards out there are improperly 1533 * configured, even though the IT8720F datasheet claims 1534 * that the internal routing of VCCH to VIN7 is the default 1535 * setting. So we force the internal routing in this case. 1536 */ 1537 if (sio_data->type == it8720 && !(reg & (1 << 1))) { 1538 reg |= (1 << 1); 1539 superio_outb(IT87_SIO_PINX2_REG, reg); 1540 pr_notice("it87: Routing internal VCCH to in7\n"); 1541 } 1542 if (reg & (1 << 0)) 1543 pr_info("it87: in3 is VCC (+5V)\n"); 1544 if (reg & (1 << 1)) 1545 pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); 1546 1547 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1548 } 1549 if (sio_data->beep_pin) 1550 pr_info("it87: Beeping is supported\n"); 1551 1552 /* Disable specific features based on DMI strings */ 1553 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); 1554 board_name = dmi_get_system_info(DMI_BOARD_NAME); 1555 if (board_vendor && board_name) { 1556 if (strcmp(board_vendor, "nVIDIA") == 0 1557 && strcmp(board_name, "FN68PT") == 0) { 1558 /* On the Shuttle SN68PT, FAN_CTL2 is apparently not 1559 connected to a fan, but to something else. One user 1560 has reported instant system power-off when changing 1561 the PWM2 duty cycle, so we disable it. 1562 I use the board name string as the trigger in case 1563 the same board is ever used in other systems. */ 1564 pr_info("it87: Disabling pwm2 due to " 1565 "hardware constraints\n"); 1566 sio_data->skip_pwm = (1 << 1); 1567 } 1568 } 1569 1570 exit: 1571 superio_exit(); 1572 return err; 1573 } 1574 1575 static void it87_remove_files(struct device *dev) 1576 { 1577 struct it87_data *data = platform_get_drvdata(pdev); 1578 struct it87_sio_data *sio_data = dev->platform_data; 1579 const struct attribute_group *fan_group = it87_get_fan_group(data); 1580 int i; 1581 1582 sysfs_remove_group(&dev->kobj, &it87_group); 1583 if (sio_data->beep_pin) 1584 sysfs_remove_group(&dev->kobj, &it87_group_beep); 1585 for (i = 0; i < 5; i++) { 1586 if (!(data->has_fan & (1 << i))) 1587 continue; 1588 sysfs_remove_group(&dev->kobj, &fan_group[i]); 1589 if (sio_data->beep_pin) 1590 sysfs_remove_file(&dev->kobj, 1591 it87_attributes_fan_beep[i]); 1592 } 1593 for (i = 0; i < 3; i++) { 1594 if (sio_data->skip_pwm & (1 << 0)) 1595 continue; 1596 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]); 1597 if (has_old_autopwm(data)) 1598 sysfs_remove_group(&dev->kobj, 1599 &it87_group_autopwm[i]); 1600 } 1601 if (!sio_data->skip_vid) 1602 sysfs_remove_group(&dev->kobj, &it87_group_vid); 1603 } 1604 1605 static int __devinit it87_probe(struct platform_device *pdev) 1606 { 1607 struct it87_data *data; 1608 struct resource *res; 1609 struct device *dev = &pdev->dev; 1610 struct it87_sio_data *sio_data = dev->platform_data; 1611 const struct attribute_group *fan_group; 1612 int err = 0, i; 1613 int enable_pwm_interface; 1614 int fan_beep_need_rw; 1615 static const char *names[] = { 1616 "it87", 1617 "it8712", 1618 "it8716", 1619 "it8718", 1620 "it8720", 1621 }; 1622 1623 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 1624 if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) { 1625 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", 1626 (unsigned long)res->start, 1627 (unsigned long)(res->start + IT87_EC_EXTENT - 1)); 1628 err = -EBUSY; 1629 goto ERROR0; 1630 } 1631 1632 data = kzalloc(sizeof(struct it87_data), GFP_KERNEL); 1633 if (!data) { 1634 err = -ENOMEM; 1635 goto ERROR1; 1636 } 1637 1638 data->addr = res->start; 1639 data->type = sio_data->type; 1640 data->revision = sio_data->revision; 1641 data->name = names[sio_data->type]; 1642 1643 /* Now, we do the remaining detection. */ 1644 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) 1645 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) { 1646 err = -ENODEV; 1647 goto ERROR2; 1648 } 1649 1650 platform_set_drvdata(pdev, data); 1651 1652 mutex_init(&data->update_lock); 1653 1654 /* Check PWM configuration */ 1655 enable_pwm_interface = it87_check_pwm(dev); 1656 1657 /* Initialize the IT87 chip */ 1658 it87_init_device(pdev); 1659 1660 /* Register sysfs hooks */ 1661 err = sysfs_create_group(&dev->kobj, &it87_group); 1662 if (err) 1663 goto ERROR2; 1664 1665 if (sio_data->beep_pin) { 1666 err = sysfs_create_group(&dev->kobj, &it87_group_beep); 1667 if (err) 1668 goto ERROR4; 1669 } 1670 1671 /* Do not create fan files for disabled fans */ 1672 fan_group = it87_get_fan_group(data); 1673 fan_beep_need_rw = 1; 1674 for (i = 0; i < 5; i++) { 1675 if (!(data->has_fan & (1 << i))) 1676 continue; 1677 err = sysfs_create_group(&dev->kobj, &fan_group[i]); 1678 if (err) 1679 goto ERROR4; 1680 1681 if (sio_data->beep_pin) { 1682 err = sysfs_create_file(&dev->kobj, 1683 it87_attributes_fan_beep[i]); 1684 if (err) 1685 goto ERROR4; 1686 if (!fan_beep_need_rw) 1687 continue; 1688 1689 /* As we have a single beep enable bit for all fans, 1690 * only the first enabled fan has a writable attribute 1691 * for it. */ 1692 if (sysfs_chmod_file(&dev->kobj, 1693 it87_attributes_fan_beep[i], 1694 S_IRUGO | S_IWUSR)) 1695 dev_dbg(dev, "chmod +w fan%d_beep failed\n", 1696 i + 1); 1697 fan_beep_need_rw = 0; 1698 } 1699 } 1700 1701 if (enable_pwm_interface) { 1702 for (i = 0; i < 3; i++) { 1703 if (sio_data->skip_pwm & (1 << i)) 1704 continue; 1705 err = sysfs_create_group(&dev->kobj, 1706 &it87_group_pwm[i]); 1707 if (err) 1708 goto ERROR4; 1709 1710 if (!has_old_autopwm(data)) 1711 continue; 1712 err = sysfs_create_group(&dev->kobj, 1713 &it87_group_autopwm[i]); 1714 if (err) 1715 goto ERROR4; 1716 } 1717 } 1718 1719 if (!sio_data->skip_vid) { 1720 data->vrm = vid_which_vrm(); 1721 /* VID reading from Super-I/O config space if available */ 1722 data->vid = sio_data->vid_value; 1723 err = sysfs_create_group(&dev->kobj, &it87_group_vid); 1724 if (err) 1725 goto ERROR4; 1726 } 1727 1728 data->hwmon_dev = hwmon_device_register(dev); 1729 if (IS_ERR(data->hwmon_dev)) { 1730 err = PTR_ERR(data->hwmon_dev); 1731 goto ERROR4; 1732 } 1733 1734 return 0; 1735 1736 ERROR4: 1737 it87_remove_files(dev); 1738 ERROR2: 1739 platform_set_drvdata(pdev, NULL); 1740 kfree(data); 1741 ERROR1: 1742 release_region(res->start, IT87_EC_EXTENT); 1743 ERROR0: 1744 return err; 1745 } 1746 1747 static int __devexit it87_remove(struct platform_device *pdev) 1748 { 1749 struct it87_data *data = platform_get_drvdata(pdev); 1750 1751 hwmon_device_unregister(data->hwmon_dev); 1752 it87_remove_files(&pdev->dev); 1753 1754 release_region(data->addr, IT87_EC_EXTENT); 1755 platform_set_drvdata(pdev, NULL); 1756 kfree(data); 1757 1758 return 0; 1759 } 1760 1761 /* Must be called with data->update_lock held, except during initialization. 1762 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 1763 would slow down the IT87 access and should not be necessary. */ 1764 static int it87_read_value(struct it87_data *data, u8 reg) 1765 { 1766 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 1767 return inb_p(data->addr + IT87_DATA_REG_OFFSET); 1768 } 1769 1770 /* Must be called with data->update_lock held, except during initialization. 1771 We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 1772 would slow down the IT87 access and should not be necessary. */ 1773 static void it87_write_value(struct it87_data *data, u8 reg, u8 value) 1774 { 1775 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 1776 outb_p(value, data->addr + IT87_DATA_REG_OFFSET); 1777 } 1778 1779 /* Return 1 if and only if the PWM interface is safe to use */ 1780 static int __devinit it87_check_pwm(struct device *dev) 1781 { 1782 struct it87_data *data = dev_get_drvdata(dev); 1783 /* Some BIOSes fail to correctly configure the IT87 fans. All fans off 1784 * and polarity set to active low is sign that this is the case so we 1785 * disable pwm control to protect the user. */ 1786 int tmp = it87_read_value(data, IT87_REG_FAN_CTL); 1787 if ((tmp & 0x87) == 0) { 1788 if (fix_pwm_polarity) { 1789 /* The user asks us to attempt a chip reconfiguration. 1790 * This means switching to active high polarity and 1791 * inverting all fan speed values. */ 1792 int i; 1793 u8 pwm[3]; 1794 1795 for (i = 0; i < 3; i++) 1796 pwm[i] = it87_read_value(data, 1797 IT87_REG_PWM(i)); 1798 1799 /* If any fan is in automatic pwm mode, the polarity 1800 * might be correct, as suspicious as it seems, so we 1801 * better don't change anything (but still disable the 1802 * PWM interface). */ 1803 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { 1804 dev_info(dev, "Reconfiguring PWM to " 1805 "active high polarity\n"); 1806 it87_write_value(data, IT87_REG_FAN_CTL, 1807 tmp | 0x87); 1808 for (i = 0; i < 3; i++) 1809 it87_write_value(data, 1810 IT87_REG_PWM(i), 1811 0x7f & ~pwm[i]); 1812 return 1; 1813 } 1814 1815 dev_info(dev, "PWM configuration is " 1816 "too broken to be fixed\n"); 1817 } 1818 1819 dev_info(dev, "Detected broken BIOS " 1820 "defaults, disabling PWM interface\n"); 1821 return 0; 1822 } else if (fix_pwm_polarity) { 1823 dev_info(dev, "PWM configuration looks " 1824 "sane, won't touch\n"); 1825 } 1826 1827 return 1; 1828 } 1829 1830 /* Called when we have found a new IT87. */ 1831 static void __devinit it87_init_device(struct platform_device *pdev) 1832 { 1833 struct it87_sio_data *sio_data = pdev->dev.platform_data; 1834 struct it87_data *data = platform_get_drvdata(pdev); 1835 int tmp, i; 1836 u8 mask; 1837 1838 /* For each PWM channel: 1839 * - If it is in automatic mode, setting to manual mode should set 1840 * the fan to full speed by default. 1841 * - If it is in manual mode, we need a mapping to temperature 1842 * channels to use when later setting to automatic mode later. 1843 * Use a 1:1 mapping by default (we are clueless.) 1844 * In both cases, the value can (and should) be changed by the user 1845 * prior to switching to a different mode. */ 1846 for (i = 0; i < 3; i++) { 1847 data->pwm_temp_map[i] = i; 1848 data->pwm_duty[i] = 0x7f; /* Full speed */ 1849 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */ 1850 } 1851 1852 /* Some chips seem to have default value 0xff for all limit 1853 * registers. For low voltage limits it makes no sense and triggers 1854 * alarms, so change to 0 instead. For high temperature limits, it 1855 * means -1 degree C, which surprisingly doesn't trigger an alarm, 1856 * but is still confusing, so change to 127 degrees C. */ 1857 for (i = 0; i < 8; i++) { 1858 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); 1859 if (tmp == 0xff) 1860 it87_write_value(data, IT87_REG_VIN_MIN(i), 0); 1861 } 1862 for (i = 0; i < 3; i++) { 1863 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 1864 if (tmp == 0xff) 1865 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); 1866 } 1867 1868 /* Temperature channels are not forcibly enabled, as they can be 1869 * set to two different sensor types and we can't guess which one 1870 * is correct for a given system. These channels can be enabled at 1871 * run-time through the temp{1-3}_type sysfs accessors if needed. */ 1872 1873 /* Check if voltage monitors are reset manually or by some reason */ 1874 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); 1875 if ((tmp & 0xff) == 0) { 1876 /* Enable all voltage monitors */ 1877 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); 1878 } 1879 1880 /* Check if tachometers are reset manually or by some reason */ 1881 mask = 0x70 & ~(sio_data->skip_fan << 4); 1882 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); 1883 if ((data->fan_main_ctrl & mask) == 0) { 1884 /* Enable all fan tachometers */ 1885 data->fan_main_ctrl |= mask; 1886 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 1887 data->fan_main_ctrl); 1888 } 1889 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; 1890 1891 /* Set tachometers to 16-bit mode if needed */ 1892 if (has_16bit_fans(data)) { 1893 tmp = it87_read_value(data, IT87_REG_FAN_16BIT); 1894 if (~tmp & 0x07 & data->has_fan) { 1895 dev_dbg(&pdev->dev, 1896 "Setting fan1-3 to 16-bit mode\n"); 1897 it87_write_value(data, IT87_REG_FAN_16BIT, 1898 tmp | 0x07); 1899 } 1900 /* IT8705F only supports three fans. */ 1901 if (data->type != it87) { 1902 if (tmp & (1 << 4)) 1903 data->has_fan |= (1 << 3); /* fan4 enabled */ 1904 if (tmp & (1 << 5)) 1905 data->has_fan |= (1 << 4); /* fan5 enabled */ 1906 } 1907 } 1908 1909 /* Fan input pins may be used for alternative functions */ 1910 data->has_fan &= ~sio_data->skip_fan; 1911 1912 /* Start monitoring */ 1913 it87_write_value(data, IT87_REG_CONFIG, 1914 (it87_read_value(data, IT87_REG_CONFIG) & 0x36) 1915 | (update_vbat ? 0x41 : 0x01)); 1916 } 1917 1918 static void it87_update_pwm_ctrl(struct it87_data *data, int nr) 1919 { 1920 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr)); 1921 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 1922 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; 1923 else /* Manual mode */ 1924 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f; 1925 1926 if (has_old_autopwm(data)) { 1927 int i; 1928 1929 for (i = 0; i < 5 ; i++) 1930 data->auto_temp[nr][i] = it87_read_value(data, 1931 IT87_REG_AUTO_TEMP(nr, i)); 1932 for (i = 0; i < 3 ; i++) 1933 data->auto_pwm[nr][i] = it87_read_value(data, 1934 IT87_REG_AUTO_PWM(nr, i)); 1935 } 1936 } 1937 1938 static struct it87_data *it87_update_device(struct device *dev) 1939 { 1940 struct it87_data *data = dev_get_drvdata(dev); 1941 int i; 1942 1943 mutex_lock(&data->update_lock); 1944 1945 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 1946 || !data->valid) { 1947 if (update_vbat) { 1948 /* Cleared after each update, so reenable. Value 1949 returned by this read will be previous value */ 1950 it87_write_value(data, IT87_REG_CONFIG, 1951 it87_read_value(data, IT87_REG_CONFIG) | 0x40); 1952 } 1953 for (i = 0; i <= 7; i++) { 1954 data->in[i] = 1955 it87_read_value(data, IT87_REG_VIN(i)); 1956 data->in_min[i] = 1957 it87_read_value(data, IT87_REG_VIN_MIN(i)); 1958 data->in_max[i] = 1959 it87_read_value(data, IT87_REG_VIN_MAX(i)); 1960 } 1961 /* in8 (battery) has no limit registers */ 1962 data->in[8] = it87_read_value(data, IT87_REG_VIN(8)); 1963 1964 for (i = 0; i < 5; i++) { 1965 /* Skip disabled fans */ 1966 if (!(data->has_fan & (1 << i))) 1967 continue; 1968 1969 data->fan_min[i] = 1970 it87_read_value(data, IT87_REG_FAN_MIN[i]); 1971 data->fan[i] = it87_read_value(data, 1972 IT87_REG_FAN[i]); 1973 /* Add high byte if in 16-bit mode */ 1974 if (has_16bit_fans(data)) { 1975 data->fan[i] |= it87_read_value(data, 1976 IT87_REG_FANX[i]) << 8; 1977 data->fan_min[i] |= it87_read_value(data, 1978 IT87_REG_FANX_MIN[i]) << 8; 1979 } 1980 } 1981 for (i = 0; i < 3; i++) { 1982 data->temp[i] = 1983 it87_read_value(data, IT87_REG_TEMP(i)); 1984 data->temp_high[i] = 1985 it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 1986 data->temp_low[i] = 1987 it87_read_value(data, IT87_REG_TEMP_LOW(i)); 1988 } 1989 1990 /* Newer chips don't have clock dividers */ 1991 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) { 1992 i = it87_read_value(data, IT87_REG_FAN_DIV); 1993 data->fan_div[0] = i & 0x07; 1994 data->fan_div[1] = (i >> 3) & 0x07; 1995 data->fan_div[2] = (i & 0x40) ? 3 : 1; 1996 } 1997 1998 data->alarms = 1999 it87_read_value(data, IT87_REG_ALARM1) | 2000 (it87_read_value(data, IT87_REG_ALARM2) << 8) | 2001 (it87_read_value(data, IT87_REG_ALARM3) << 16); 2002 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 2003 2004 data->fan_main_ctrl = it87_read_value(data, 2005 IT87_REG_FAN_MAIN_CTRL); 2006 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); 2007 for (i = 0; i < 3; i++) 2008 it87_update_pwm_ctrl(data, i); 2009 2010 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); 2011 /* The 8705 does not have VID capability. 2012 The 8718 and the 8720 don't use IT87_REG_VID for the 2013 same purpose. */ 2014 if (data->type == it8712 || data->type == it8716) { 2015 data->vid = it87_read_value(data, IT87_REG_VID); 2016 /* The older IT8712F revisions had only 5 VID pins, 2017 but we assume it is always safe to read 6 bits. */ 2018 data->vid &= 0x3f; 2019 } 2020 data->last_updated = jiffies; 2021 data->valid = 1; 2022 } 2023 2024 mutex_unlock(&data->update_lock); 2025 2026 return data; 2027 } 2028 2029 static int __init it87_device_add(unsigned short address, 2030 const struct it87_sio_data *sio_data) 2031 { 2032 struct resource res = { 2033 .start = address + IT87_EC_OFFSET, 2034 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, 2035 .name = DRVNAME, 2036 .flags = IORESOURCE_IO, 2037 }; 2038 int err; 2039 2040 err = acpi_check_resource_conflict(&res); 2041 if (err) 2042 goto exit; 2043 2044 pdev = platform_device_alloc(DRVNAME, address); 2045 if (!pdev) { 2046 err = -ENOMEM; 2047 printk(KERN_ERR DRVNAME ": Device allocation failed\n"); 2048 goto exit; 2049 } 2050 2051 err = platform_device_add_resources(pdev, &res, 1); 2052 if (err) { 2053 printk(KERN_ERR DRVNAME ": Device resource addition failed " 2054 "(%d)\n", err); 2055 goto exit_device_put; 2056 } 2057 2058 err = platform_device_add_data(pdev, sio_data, 2059 sizeof(struct it87_sio_data)); 2060 if (err) { 2061 printk(KERN_ERR DRVNAME ": Platform data allocation failed\n"); 2062 goto exit_device_put; 2063 } 2064 2065 err = platform_device_add(pdev); 2066 if (err) { 2067 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", 2068 err); 2069 goto exit_device_put; 2070 } 2071 2072 return 0; 2073 2074 exit_device_put: 2075 platform_device_put(pdev); 2076 exit: 2077 return err; 2078 } 2079 2080 static int __init sm_it87_init(void) 2081 { 2082 int err; 2083 unsigned short isa_address = 0; 2084 struct it87_sio_data sio_data; 2085 2086 memset(&sio_data, 0, sizeof(struct it87_sio_data)); 2087 err = it87_find(&isa_address, &sio_data); 2088 if (err) 2089 return err; 2090 err = platform_driver_register(&it87_driver); 2091 if (err) 2092 return err; 2093 2094 err = it87_device_add(isa_address, &sio_data); 2095 if (err) { 2096 platform_driver_unregister(&it87_driver); 2097 return err; 2098 } 2099 2100 return 0; 2101 } 2102 2103 static void __exit sm_it87_exit(void) 2104 { 2105 platform_device_unregister(pdev); 2106 platform_driver_unregister(&it87_driver); 2107 } 2108 2109 2110 MODULE_AUTHOR("Chris Gauthron, " 2111 "Jean Delvare <khali@linux-fr.org>"); 2112 MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver"); 2113 module_param(update_vbat, bool, 0); 2114 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); 2115 module_param(fix_pwm_polarity, bool, 0); 2116 MODULE_PARM_DESC(fix_pwm_polarity, 2117 "Force PWM polarity to active high (DANGEROUS)"); 2118 MODULE_LICENSE("GPL"); 2119 2120 module_init(sm_it87_init); 2121 module_exit(sm_it87_exit); 2122