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: IT8603E Super I/O chip w/LPC interface 14 * IT8623E Super I/O chip w/LPC interface 15 * IT8705F Super I/O chip w/LPC interface 16 * IT8712F Super I/O chip w/LPC interface 17 * IT8716F Super I/O chip w/LPC interface 18 * IT8718F Super I/O chip w/LPC interface 19 * IT8720F Super I/O chip w/LPC interface 20 * IT8721F Super I/O chip w/LPC interface 21 * IT8726F Super I/O chip w/LPC interface 22 * IT8728F Super I/O chip w/LPC interface 23 * IT8758E Super I/O chip w/LPC interface 24 * IT8771E Super I/O chip w/LPC interface 25 * IT8772E Super I/O chip w/LPC interface 26 * IT8782F Super I/O chip w/LPC interface 27 * IT8783E/F Super I/O chip w/LPC interface 28 * Sis950 A clone of the IT8705F 29 * 30 * Copyright (C) 2001 Chris Gauthron 31 * Copyright (C) 2005-2010 Jean Delvare <jdelvare@suse.de> 32 * 33 * This program is free software; you can redistribute it and/or modify 34 * it under the terms of the GNU General Public License as published by 35 * the Free Software Foundation; either version 2 of the License, or 36 * (at your option) any later version. 37 * 38 * This program is distributed in the hope that it will be useful, 39 * but WITHOUT ANY WARRANTY; without even the implied warranty of 40 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 41 * GNU General Public License for more details. 42 * 43 * You should have received a copy of the GNU General Public License 44 * along with this program; if not, write to the Free Software 45 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 46 */ 47 48 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 49 50 #include <linux/module.h> 51 #include <linux/init.h> 52 #include <linux/slab.h> 53 #include <linux/jiffies.h> 54 #include <linux/platform_device.h> 55 #include <linux/hwmon.h> 56 #include <linux/hwmon-sysfs.h> 57 #include <linux/hwmon-vid.h> 58 #include <linux/err.h> 59 #include <linux/mutex.h> 60 #include <linux/sysfs.h> 61 #include <linux/string.h> 62 #include <linux/dmi.h> 63 #include <linux/acpi.h> 64 #include <linux/io.h> 65 66 #define DRVNAME "it87" 67 68 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771, 69 it8772, it8782, it8783, it8603 }; 70 71 static unsigned short force_id; 72 module_param(force_id, ushort, 0); 73 MODULE_PARM_DESC(force_id, "Override the detected device ID"); 74 75 static struct platform_device *pdev; 76 77 #define REG 0x2e /* The register to read/write */ 78 #define DEV 0x07 /* Register: Logical device select */ 79 #define VAL 0x2f /* The value to read/write */ 80 #define PME 0x04 /* The device with the fan registers in it */ 81 82 /* The device with the IT8718F/IT8720F VID value in it */ 83 #define GPIO 0x07 84 85 #define DEVID 0x20 /* Register: Device ID */ 86 #define DEVREV 0x22 /* Register: Device Revision */ 87 88 static inline int superio_inb(int reg) 89 { 90 outb(reg, REG); 91 return inb(VAL); 92 } 93 94 static inline void superio_outb(int reg, int val) 95 { 96 outb(reg, REG); 97 outb(val, VAL); 98 } 99 100 static int superio_inw(int reg) 101 { 102 int val; 103 outb(reg++, REG); 104 val = inb(VAL) << 8; 105 outb(reg, REG); 106 val |= inb(VAL); 107 return val; 108 } 109 110 static inline void superio_select(int ldn) 111 { 112 outb(DEV, REG); 113 outb(ldn, VAL); 114 } 115 116 static inline int superio_enter(void) 117 { 118 /* 119 * Try to reserve REG and REG + 1 for exclusive access. 120 */ 121 if (!request_muxed_region(REG, 2, DRVNAME)) 122 return -EBUSY; 123 124 outb(0x87, REG); 125 outb(0x01, REG); 126 outb(0x55, REG); 127 outb(0x55, REG); 128 return 0; 129 } 130 131 static inline void superio_exit(void) 132 { 133 outb(0x02, REG); 134 outb(0x02, VAL); 135 release_region(REG, 2); 136 } 137 138 /* Logical device 4 registers */ 139 #define IT8712F_DEVID 0x8712 140 #define IT8705F_DEVID 0x8705 141 #define IT8716F_DEVID 0x8716 142 #define IT8718F_DEVID 0x8718 143 #define IT8720F_DEVID 0x8720 144 #define IT8721F_DEVID 0x8721 145 #define IT8726F_DEVID 0x8726 146 #define IT8728F_DEVID 0x8728 147 #define IT8771E_DEVID 0x8771 148 #define IT8772E_DEVID 0x8772 149 #define IT8782F_DEVID 0x8782 150 #define IT8783E_DEVID 0x8783 151 #define IT8603E_DEVID 0x8603 152 #define IT8623E_DEVID 0x8623 153 #define IT87_ACT_REG 0x30 154 #define IT87_BASE_REG 0x60 155 156 /* Logical device 7 registers (IT8712F and later) */ 157 #define IT87_SIO_GPIO1_REG 0x25 158 #define IT87_SIO_GPIO3_REG 0x27 159 #define IT87_SIO_GPIO5_REG 0x29 160 #define IT87_SIO_PINX1_REG 0x2a /* Pin selection */ 161 #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ 162 #define IT87_SIO_SPI_REG 0xef /* SPI function pin select */ 163 #define IT87_SIO_VID_REG 0xfc /* VID value */ 164 #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */ 165 166 /* Update battery voltage after every reading if true */ 167 static bool update_vbat; 168 169 /* Not all BIOSes properly configure the PWM registers */ 170 static bool fix_pwm_polarity; 171 172 /* Many IT87 constants specified below */ 173 174 /* Length of ISA address segment */ 175 #define IT87_EXTENT 8 176 177 /* Length of ISA address segment for Environmental Controller */ 178 #define IT87_EC_EXTENT 2 179 180 /* Offset of EC registers from ISA base address */ 181 #define IT87_EC_OFFSET 5 182 183 /* Where are the ISA address/data registers relative to the EC base address */ 184 #define IT87_ADDR_REG_OFFSET 0 185 #define IT87_DATA_REG_OFFSET 1 186 187 /*----- The IT87 registers -----*/ 188 189 #define IT87_REG_CONFIG 0x00 190 191 #define IT87_REG_ALARM1 0x01 192 #define IT87_REG_ALARM2 0x02 193 #define IT87_REG_ALARM3 0x03 194 195 /* 196 * The IT8718F and IT8720F have the VID value in a different register, in 197 * Super-I/O configuration space. 198 */ 199 #define IT87_REG_VID 0x0a 200 /* 201 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b 202 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer 203 * mode. 204 */ 205 #define IT87_REG_FAN_DIV 0x0b 206 #define IT87_REG_FAN_16BIT 0x0c 207 208 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ 209 210 static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; 211 static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; 212 static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; 213 static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; 214 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 }; 215 216 #define IT87_REG_FAN_MAIN_CTRL 0x13 217 #define IT87_REG_FAN_CTL 0x14 218 #define IT87_REG_PWM(nr) (0x15 + (nr)) 219 #define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8) 220 221 #define IT87_REG_VIN(nr) (0x20 + (nr)) 222 #define IT87_REG_TEMP(nr) (0x29 + (nr)) 223 224 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) 225 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) 226 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) 227 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) 228 229 #define IT87_REG_VIN_ENABLE 0x50 230 #define IT87_REG_TEMP_ENABLE 0x51 231 #define IT87_REG_TEMP_EXTRA 0x55 232 #define IT87_REG_BEEP_ENABLE 0x5c 233 234 #define IT87_REG_CHIPID 0x58 235 236 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i)) 237 #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i)) 238 239 struct it87_devices { 240 const char *name; 241 u16 features; 242 u8 peci_mask; 243 u8 old_peci_mask; 244 }; 245 246 #define FEAT_12MV_ADC (1 << 0) 247 #define FEAT_NEWER_AUTOPWM (1 << 1) 248 #define FEAT_OLD_AUTOPWM (1 << 2) 249 #define FEAT_16BIT_FANS (1 << 3) 250 #define FEAT_TEMP_OFFSET (1 << 4) 251 #define FEAT_TEMP_PECI (1 << 5) 252 #define FEAT_TEMP_OLD_PECI (1 << 6) 253 254 static const struct it87_devices it87_devices[] = { 255 [it87] = { 256 .name = "it87", 257 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */ 258 }, 259 [it8712] = { 260 .name = "it8712", 261 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */ 262 }, 263 [it8716] = { 264 .name = "it8716", 265 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET, 266 }, 267 [it8718] = { 268 .name = "it8718", 269 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 270 | FEAT_TEMP_OLD_PECI, 271 .old_peci_mask = 0x4, 272 }, 273 [it8720] = { 274 .name = "it8720", 275 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 276 | FEAT_TEMP_OLD_PECI, 277 .old_peci_mask = 0x4, 278 }, 279 [it8721] = { 280 .name = "it8721", 281 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 282 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI, 283 .peci_mask = 0x05, 284 .old_peci_mask = 0x02, /* Actually reports PCH */ 285 }, 286 [it8728] = { 287 .name = "it8728", 288 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 289 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, 290 .peci_mask = 0x07, 291 }, 292 [it8771] = { 293 .name = "it8771", 294 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 295 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, 296 /* PECI: guesswork */ 297 /* 12mV ADC (OHM) */ 298 /* 16 bit fans (OHM) */ 299 .peci_mask = 0x07, 300 }, 301 [it8772] = { 302 .name = "it8772", 303 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 304 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, 305 /* PECI (coreboot) */ 306 /* 12mV ADC (HWSensors4, OHM) */ 307 /* 16 bit fans (HWSensors4, OHM) */ 308 .peci_mask = 0x07, 309 }, 310 [it8782] = { 311 .name = "it8782", 312 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 313 | FEAT_TEMP_OLD_PECI, 314 .old_peci_mask = 0x4, 315 }, 316 [it8783] = { 317 .name = "it8783", 318 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 319 | FEAT_TEMP_OLD_PECI, 320 .old_peci_mask = 0x4, 321 }, 322 [it8603] = { 323 .name = "it8603", 324 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 325 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, 326 .peci_mask = 0x07, 327 }, 328 }; 329 330 #define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS) 331 #define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC) 332 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM) 333 #define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM) 334 #define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET) 335 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \ 336 ((data)->peci_mask & (1 << nr))) 337 #define has_temp_old_peci(data, nr) \ 338 (((data)->features & FEAT_TEMP_OLD_PECI) && \ 339 ((data)->old_peci_mask & (1 << nr))) 340 341 struct it87_sio_data { 342 enum chips type; 343 /* Values read from Super-I/O config space */ 344 u8 revision; 345 u8 vid_value; 346 u8 beep_pin; 347 u8 internal; /* Internal sensors can be labeled */ 348 /* Features skipped based on config or DMI */ 349 u16 skip_in; 350 u8 skip_vid; 351 u8 skip_fan; 352 u8 skip_pwm; 353 u8 skip_temp; 354 }; 355 356 /* 357 * For each registered chip, we need to keep some data in memory. 358 * The structure is dynamically allocated. 359 */ 360 struct it87_data { 361 struct device *hwmon_dev; 362 enum chips type; 363 u16 features; 364 u8 peci_mask; 365 u8 old_peci_mask; 366 367 unsigned short addr; 368 const char *name; 369 struct mutex update_lock; 370 char valid; /* !=0 if following fields are valid */ 371 unsigned long last_updated; /* In jiffies */ 372 373 u16 in_scaled; /* Internal voltage sensors are scaled */ 374 u8 in[10][3]; /* [nr][0]=in, [1]=min, [2]=max */ 375 u8 has_fan; /* Bitfield, fans enabled */ 376 u16 fan[5][2]; /* Register values, [nr][0]=fan, [1]=min */ 377 u8 has_temp; /* Bitfield, temp sensors enabled */ 378 s8 temp[3][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */ 379 u8 sensor; /* Register value (IT87_REG_TEMP_ENABLE) */ 380 u8 extra; /* Register value (IT87_REG_TEMP_EXTRA) */ 381 u8 fan_div[3]; /* Register encoding, shifted right */ 382 u8 vid; /* Register encoding, combined */ 383 u8 vrm; 384 u32 alarms; /* Register encoding, combined */ 385 u8 beeps; /* Register encoding */ 386 u8 fan_main_ctrl; /* Register value */ 387 u8 fan_ctl; /* Register value */ 388 389 /* 390 * The following 3 arrays correspond to the same registers up to 391 * the IT8720F. The meaning of bits 6-0 depends on the value of bit 392 * 7, and we want to preserve settings on mode changes, so we have 393 * to track all values separately. 394 * Starting with the IT8721F, the manual PWM duty cycles are stored 395 * in separate registers (8-bit values), so the separate tracking 396 * is no longer needed, but it is still done to keep the driver 397 * simple. 398 */ 399 u8 pwm_ctrl[3]; /* Register value */ 400 u8 pwm_duty[3]; /* Manual PWM value set by user */ 401 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */ 402 403 /* Automatic fan speed control registers */ 404 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */ 405 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */ 406 }; 407 408 static int adc_lsb(const struct it87_data *data, int nr) 409 { 410 int lsb = has_12mv_adc(data) ? 12 : 16; 411 if (data->in_scaled & (1 << nr)) 412 lsb <<= 1; 413 return lsb; 414 } 415 416 static u8 in_to_reg(const struct it87_data *data, int nr, long val) 417 { 418 val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr)); 419 return clamp_val(val, 0, 255); 420 } 421 422 static int in_from_reg(const struct it87_data *data, int nr, int val) 423 { 424 return val * adc_lsb(data, nr); 425 } 426 427 static inline u8 FAN_TO_REG(long rpm, int div) 428 { 429 if (rpm == 0) 430 return 255; 431 rpm = clamp_val(rpm, 1, 1000000); 432 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); 433 } 434 435 static inline u16 FAN16_TO_REG(long rpm) 436 { 437 if (rpm == 0) 438 return 0xffff; 439 return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe); 440 } 441 442 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \ 443 1350000 / ((val) * (div))) 444 /* The divider is fixed to 2 in 16-bit mode */ 445 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \ 446 1350000 / ((val) * 2)) 447 448 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \ 449 ((val) + 500) / 1000), -128, 127)) 450 #define TEMP_FROM_REG(val) ((val) * 1000) 451 452 static u8 pwm_to_reg(const struct it87_data *data, long val) 453 { 454 if (has_newer_autopwm(data)) 455 return val; 456 else 457 return val >> 1; 458 } 459 460 static int pwm_from_reg(const struct it87_data *data, u8 reg) 461 { 462 if (has_newer_autopwm(data)) 463 return reg; 464 else 465 return (reg & 0x7f) << 1; 466 } 467 468 469 static int DIV_TO_REG(int val) 470 { 471 int answer = 0; 472 while (answer < 7 && (val >>= 1)) 473 answer++; 474 return answer; 475 } 476 #define DIV_FROM_REG(val) (1 << (val)) 477 478 static const unsigned int pwm_freq[8] = { 479 48000000 / 128, 480 24000000 / 128, 481 12000000 / 128, 482 8000000 / 128, 483 6000000 / 128, 484 3000000 / 128, 485 1500000 / 128, 486 750000 / 128, 487 }; 488 489 static int it87_probe(struct platform_device *pdev); 490 static int it87_remove(struct platform_device *pdev); 491 492 static int it87_read_value(struct it87_data *data, u8 reg); 493 static void it87_write_value(struct it87_data *data, u8 reg, u8 value); 494 static struct it87_data *it87_update_device(struct device *dev); 495 static int it87_check_pwm(struct device *dev); 496 static void it87_init_device(struct platform_device *pdev); 497 498 499 static struct platform_driver it87_driver = { 500 .driver = { 501 .owner = THIS_MODULE, 502 .name = DRVNAME, 503 }, 504 .probe = it87_probe, 505 .remove = it87_remove, 506 }; 507 508 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 509 char *buf) 510 { 511 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 512 int nr = sattr->nr; 513 int index = sattr->index; 514 515 struct it87_data *data = it87_update_device(dev); 516 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index])); 517 } 518 519 static ssize_t set_in(struct device *dev, struct device_attribute *attr, 520 const char *buf, size_t count) 521 { 522 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 523 int nr = sattr->nr; 524 int index = sattr->index; 525 526 struct it87_data *data = dev_get_drvdata(dev); 527 unsigned long val; 528 529 if (kstrtoul(buf, 10, &val) < 0) 530 return -EINVAL; 531 532 mutex_lock(&data->update_lock); 533 data->in[nr][index] = in_to_reg(data, nr, val); 534 it87_write_value(data, 535 index == 1 ? IT87_REG_VIN_MIN(nr) 536 : IT87_REG_VIN_MAX(nr), 537 data->in[nr][index]); 538 mutex_unlock(&data->update_lock); 539 return count; 540 } 541 542 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0); 543 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in, 544 0, 1); 545 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in, 546 0, 2); 547 548 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0); 549 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in, 550 1, 1); 551 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in, 552 1, 2); 553 554 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0); 555 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in, 556 2, 1); 557 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in, 558 2, 2); 559 560 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0); 561 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in, 562 3, 1); 563 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in, 564 3, 2); 565 566 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0); 567 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in, 568 4, 1); 569 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in, 570 4, 2); 571 572 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0); 573 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in, 574 5, 1); 575 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in, 576 5, 2); 577 578 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0); 579 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in, 580 6, 1); 581 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in, 582 6, 2); 583 584 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0); 585 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in, 586 7, 1); 587 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in, 588 7, 2); 589 590 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0); 591 static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0); 592 593 /* 3 temperatures */ 594 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 595 char *buf) 596 { 597 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 598 int nr = sattr->nr; 599 int index = sattr->index; 600 struct it87_data *data = it87_update_device(dev); 601 602 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index])); 603 } 604 605 static ssize_t set_temp(struct device *dev, struct device_attribute *attr, 606 const char *buf, size_t count) 607 { 608 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 609 int nr = sattr->nr; 610 int index = sattr->index; 611 struct it87_data *data = dev_get_drvdata(dev); 612 long val; 613 u8 reg, regval; 614 615 if (kstrtol(buf, 10, &val) < 0) 616 return -EINVAL; 617 618 mutex_lock(&data->update_lock); 619 620 switch (index) { 621 default: 622 case 1: 623 reg = IT87_REG_TEMP_LOW(nr); 624 break; 625 case 2: 626 reg = IT87_REG_TEMP_HIGH(nr); 627 break; 628 case 3: 629 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE); 630 if (!(regval & 0x80)) { 631 regval |= 0x80; 632 it87_write_value(data, IT87_REG_BEEP_ENABLE, regval); 633 } 634 data->valid = 0; 635 reg = IT87_REG_TEMP_OFFSET[nr]; 636 break; 637 } 638 639 data->temp[nr][index] = TEMP_TO_REG(val); 640 it87_write_value(data, reg, data->temp[nr][index]); 641 mutex_unlock(&data->update_lock); 642 return count; 643 } 644 645 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0); 646 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 647 0, 1); 648 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 649 0, 2); 650 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp, 651 set_temp, 0, 3); 652 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0); 653 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 654 1, 1); 655 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 656 1, 2); 657 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp, 658 set_temp, 1, 3); 659 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0); 660 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 661 2, 1); 662 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 663 2, 2); 664 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp, 665 set_temp, 2, 3); 666 667 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr, 668 char *buf) 669 { 670 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 671 int nr = sensor_attr->index; 672 struct it87_data *data = it87_update_device(dev); 673 u8 reg = data->sensor; /* In case value is updated while used */ 674 u8 extra = data->extra; 675 676 if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) 677 || (has_temp_old_peci(data, nr) && (extra & 0x80))) 678 return sprintf(buf, "6\n"); /* Intel PECI */ 679 if (reg & (1 << nr)) 680 return sprintf(buf, "3\n"); /* thermal diode */ 681 if (reg & (8 << nr)) 682 return sprintf(buf, "4\n"); /* thermistor */ 683 return sprintf(buf, "0\n"); /* disabled */ 684 } 685 686 static ssize_t set_temp_type(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 long val; 694 u8 reg, extra; 695 696 if (kstrtol(buf, 10, &val) < 0) 697 return -EINVAL; 698 699 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); 700 reg &= ~(1 << nr); 701 reg &= ~(8 << nr); 702 if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6)) 703 reg &= 0x3f; 704 extra = it87_read_value(data, IT87_REG_TEMP_EXTRA); 705 if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6)) 706 extra &= 0x7f; 707 if (val == 2) { /* backwards compatibility */ 708 dev_warn(dev, 709 "Sensor type 2 is deprecated, please use 4 instead\n"); 710 val = 4; 711 } 712 /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */ 713 if (val == 3) 714 reg |= 1 << nr; 715 else if (val == 4) 716 reg |= 8 << nr; 717 else if (has_temp_peci(data, nr) && val == 6) 718 reg |= (nr + 1) << 6; 719 else if (has_temp_old_peci(data, nr) && val == 6) 720 extra |= 0x80; 721 else if (val != 0) 722 return -EINVAL; 723 724 mutex_lock(&data->update_lock); 725 data->sensor = reg; 726 data->extra = extra; 727 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); 728 if (has_temp_old_peci(data, nr)) 729 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra); 730 data->valid = 0; /* Force cache refresh */ 731 mutex_unlock(&data->update_lock); 732 return count; 733 } 734 735 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type, 736 set_temp_type, 0); 737 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type, 738 set_temp_type, 1); 739 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type, 740 set_temp_type, 2); 741 742 /* 3 Fans */ 743 744 static int pwm_mode(const struct it87_data *data, int nr) 745 { 746 int ctrl = data->fan_main_ctrl & (1 << nr); 747 748 if (ctrl == 0 && data->type != it8603) /* Full speed */ 749 return 0; 750 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 751 return 2; 752 else /* Manual mode */ 753 return 1; 754 } 755 756 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 757 char *buf) 758 { 759 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 760 int nr = sattr->nr; 761 int index = sattr->index; 762 int speed; 763 struct it87_data *data = it87_update_device(dev); 764 765 speed = has_16bit_fans(data) ? 766 FAN16_FROM_REG(data->fan[nr][index]) : 767 FAN_FROM_REG(data->fan[nr][index], 768 DIV_FROM_REG(data->fan_div[nr])); 769 return sprintf(buf, "%d\n", speed); 770 } 771 772 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, 773 char *buf) 774 { 775 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 776 int nr = sensor_attr->index; 777 778 struct it87_data *data = it87_update_device(dev); 779 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); 780 } 781 static ssize_t show_pwm_enable(struct device *dev, 782 struct device_attribute *attr, char *buf) 783 { 784 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 785 int nr = sensor_attr->index; 786 787 struct it87_data *data = it87_update_device(dev); 788 return sprintf(buf, "%d\n", pwm_mode(data, nr)); 789 } 790 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 791 char *buf) 792 { 793 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 794 int nr = sensor_attr->index; 795 796 struct it87_data *data = it87_update_device(dev); 797 return sprintf(buf, "%d\n", 798 pwm_from_reg(data, data->pwm_duty[nr])); 799 } 800 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, 801 char *buf) 802 { 803 struct it87_data *data = it87_update_device(dev); 804 int index = (data->fan_ctl >> 4) & 0x07; 805 806 return sprintf(buf, "%u\n", pwm_freq[index]); 807 } 808 809 static ssize_t set_fan(struct device *dev, struct device_attribute *attr, 810 const char *buf, size_t count) 811 { 812 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 813 int nr = sattr->nr; 814 int index = sattr->index; 815 816 struct it87_data *data = dev_get_drvdata(dev); 817 long val; 818 u8 reg; 819 820 if (kstrtol(buf, 10, &val) < 0) 821 return -EINVAL; 822 823 mutex_lock(&data->update_lock); 824 825 if (has_16bit_fans(data)) { 826 data->fan[nr][index] = FAN16_TO_REG(val); 827 it87_write_value(data, IT87_REG_FAN_MIN[nr], 828 data->fan[nr][index] & 0xff); 829 it87_write_value(data, IT87_REG_FANX_MIN[nr], 830 data->fan[nr][index] >> 8); 831 } else { 832 reg = it87_read_value(data, IT87_REG_FAN_DIV); 833 switch (nr) { 834 case 0: 835 data->fan_div[nr] = reg & 0x07; 836 break; 837 case 1: 838 data->fan_div[nr] = (reg >> 3) & 0x07; 839 break; 840 case 2: 841 data->fan_div[nr] = (reg & 0x40) ? 3 : 1; 842 break; 843 } 844 data->fan[nr][index] = 845 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); 846 it87_write_value(data, IT87_REG_FAN_MIN[nr], 847 data->fan[nr][index]); 848 } 849 850 mutex_unlock(&data->update_lock); 851 return count; 852 } 853 854 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 855 const char *buf, size_t count) 856 { 857 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 858 int nr = sensor_attr->index; 859 860 struct it87_data *data = dev_get_drvdata(dev); 861 unsigned long val; 862 int min; 863 u8 old; 864 865 if (kstrtoul(buf, 10, &val) < 0) 866 return -EINVAL; 867 868 mutex_lock(&data->update_lock); 869 old = it87_read_value(data, IT87_REG_FAN_DIV); 870 871 /* Save fan min limit */ 872 min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr])); 873 874 switch (nr) { 875 case 0: 876 case 1: 877 data->fan_div[nr] = DIV_TO_REG(val); 878 break; 879 case 2: 880 if (val < 8) 881 data->fan_div[nr] = 1; 882 else 883 data->fan_div[nr] = 3; 884 } 885 val = old & 0x80; 886 val |= (data->fan_div[0] & 0x07); 887 val |= (data->fan_div[1] & 0x07) << 3; 888 if (data->fan_div[2] == 3) 889 val |= 0x1 << 6; 890 it87_write_value(data, IT87_REG_FAN_DIV, val); 891 892 /* Restore fan min limit */ 893 data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); 894 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]); 895 896 mutex_unlock(&data->update_lock); 897 return count; 898 } 899 900 /* Returns 0 if OK, -EINVAL otherwise */ 901 static int check_trip_points(struct device *dev, int nr) 902 { 903 const struct it87_data *data = dev_get_drvdata(dev); 904 int i, err = 0; 905 906 if (has_old_autopwm(data)) { 907 for (i = 0; i < 3; i++) { 908 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1]) 909 err = -EINVAL; 910 } 911 for (i = 0; i < 2; i++) { 912 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1]) 913 err = -EINVAL; 914 } 915 } 916 917 if (err) { 918 dev_err(dev, 919 "Inconsistent trip points, not switching to automatic mode\n"); 920 dev_err(dev, "Adjust the trip points and try again\n"); 921 } 922 return err; 923 } 924 925 static ssize_t set_pwm_enable(struct device *dev, 926 struct device_attribute *attr, const char *buf, size_t count) 927 { 928 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 929 int nr = sensor_attr->index; 930 931 struct it87_data *data = dev_get_drvdata(dev); 932 long val; 933 934 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2) 935 return -EINVAL; 936 937 /* Check trip points before switching to automatic mode */ 938 if (val == 2) { 939 if (check_trip_points(dev, nr) < 0) 940 return -EINVAL; 941 } 942 943 /* IT8603E does not have on/off mode */ 944 if (val == 0 && data->type == it8603) 945 return -EINVAL; 946 947 mutex_lock(&data->update_lock); 948 949 if (val == 0) { 950 int tmp; 951 /* make sure the fan is on when in on/off mode */ 952 tmp = it87_read_value(data, IT87_REG_FAN_CTL); 953 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); 954 /* set on/off mode */ 955 data->fan_main_ctrl &= ~(1 << nr); 956 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 957 data->fan_main_ctrl); 958 } else { 959 if (val == 1) /* Manual mode */ 960 data->pwm_ctrl[nr] = has_newer_autopwm(data) ? 961 data->pwm_temp_map[nr] : 962 data->pwm_duty[nr]; 963 else /* Automatic mode */ 964 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 965 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 966 967 if (data->type != it8603) { 968 /* set SmartGuardian mode */ 969 data->fan_main_ctrl |= (1 << nr); 970 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 971 data->fan_main_ctrl); 972 } 973 } 974 975 mutex_unlock(&data->update_lock); 976 return count; 977 } 978 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 979 const char *buf, size_t count) 980 { 981 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 982 int nr = sensor_attr->index; 983 984 struct it87_data *data = dev_get_drvdata(dev); 985 long val; 986 987 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) 988 return -EINVAL; 989 990 mutex_lock(&data->update_lock); 991 if (has_newer_autopwm(data)) { 992 /* 993 * If we are in automatic mode, the PWM duty cycle register 994 * is read-only so we can't write the value. 995 */ 996 if (data->pwm_ctrl[nr] & 0x80) { 997 mutex_unlock(&data->update_lock); 998 return -EBUSY; 999 } 1000 data->pwm_duty[nr] = pwm_to_reg(data, val); 1001 it87_write_value(data, IT87_REG_PWM_DUTY(nr), 1002 data->pwm_duty[nr]); 1003 } else { 1004 data->pwm_duty[nr] = pwm_to_reg(data, val); 1005 /* 1006 * If we are in manual mode, write the duty cycle immediately; 1007 * otherwise, just store it for later use. 1008 */ 1009 if (!(data->pwm_ctrl[nr] & 0x80)) { 1010 data->pwm_ctrl[nr] = data->pwm_duty[nr]; 1011 it87_write_value(data, IT87_REG_PWM(nr), 1012 data->pwm_ctrl[nr]); 1013 } 1014 } 1015 mutex_unlock(&data->update_lock); 1016 return count; 1017 } 1018 static ssize_t set_pwm_freq(struct device *dev, 1019 struct device_attribute *attr, const char *buf, size_t count) 1020 { 1021 struct it87_data *data = dev_get_drvdata(dev); 1022 unsigned long val; 1023 int i; 1024 1025 if (kstrtoul(buf, 10, &val) < 0) 1026 return -EINVAL; 1027 1028 /* Search for the nearest available frequency */ 1029 for (i = 0; i < 7; i++) { 1030 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) 1031 break; 1032 } 1033 1034 mutex_lock(&data->update_lock); 1035 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; 1036 data->fan_ctl |= i << 4; 1037 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); 1038 mutex_unlock(&data->update_lock); 1039 1040 return count; 1041 } 1042 static ssize_t show_pwm_temp_map(struct device *dev, 1043 struct device_attribute *attr, char *buf) 1044 { 1045 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1046 int nr = sensor_attr->index; 1047 1048 struct it87_data *data = it87_update_device(dev); 1049 int map; 1050 1051 if (data->pwm_temp_map[nr] < 3) 1052 map = 1 << data->pwm_temp_map[nr]; 1053 else 1054 map = 0; /* Should never happen */ 1055 return sprintf(buf, "%d\n", map); 1056 } 1057 static ssize_t set_pwm_temp_map(struct device *dev, 1058 struct device_attribute *attr, const char *buf, size_t count) 1059 { 1060 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1061 int nr = sensor_attr->index; 1062 1063 struct it87_data *data = dev_get_drvdata(dev); 1064 long val; 1065 u8 reg; 1066 1067 /* 1068 * This check can go away if we ever support automatic fan speed 1069 * control on newer chips. 1070 */ 1071 if (!has_old_autopwm(data)) { 1072 dev_notice(dev, "Mapping change disabled for safety reasons\n"); 1073 return -EINVAL; 1074 } 1075 1076 if (kstrtol(buf, 10, &val) < 0) 1077 return -EINVAL; 1078 1079 switch (val) { 1080 case (1 << 0): 1081 reg = 0x00; 1082 break; 1083 case (1 << 1): 1084 reg = 0x01; 1085 break; 1086 case (1 << 2): 1087 reg = 0x02; 1088 break; 1089 default: 1090 return -EINVAL; 1091 } 1092 1093 mutex_lock(&data->update_lock); 1094 data->pwm_temp_map[nr] = reg; 1095 /* 1096 * If we are in automatic mode, write the temp mapping immediately; 1097 * otherwise, just store it for later use. 1098 */ 1099 if (data->pwm_ctrl[nr] & 0x80) { 1100 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 1101 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 1102 } 1103 mutex_unlock(&data->update_lock); 1104 return count; 1105 } 1106 1107 static ssize_t show_auto_pwm(struct device *dev, 1108 struct device_attribute *attr, char *buf) 1109 { 1110 struct it87_data *data = it87_update_device(dev); 1111 struct sensor_device_attribute_2 *sensor_attr = 1112 to_sensor_dev_attr_2(attr); 1113 int nr = sensor_attr->nr; 1114 int point = sensor_attr->index; 1115 1116 return sprintf(buf, "%d\n", 1117 pwm_from_reg(data, data->auto_pwm[nr][point])); 1118 } 1119 1120 static ssize_t set_auto_pwm(struct device *dev, 1121 struct device_attribute *attr, const char *buf, size_t count) 1122 { 1123 struct it87_data *data = dev_get_drvdata(dev); 1124 struct sensor_device_attribute_2 *sensor_attr = 1125 to_sensor_dev_attr_2(attr); 1126 int nr = sensor_attr->nr; 1127 int point = sensor_attr->index; 1128 long val; 1129 1130 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) 1131 return -EINVAL; 1132 1133 mutex_lock(&data->update_lock); 1134 data->auto_pwm[nr][point] = pwm_to_reg(data, val); 1135 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point), 1136 data->auto_pwm[nr][point]); 1137 mutex_unlock(&data->update_lock); 1138 return count; 1139 } 1140 1141 static ssize_t show_auto_temp(struct device *dev, 1142 struct device_attribute *attr, char *buf) 1143 { 1144 struct it87_data *data = it87_update_device(dev); 1145 struct sensor_device_attribute_2 *sensor_attr = 1146 to_sensor_dev_attr_2(attr); 1147 int nr = sensor_attr->nr; 1148 int point = sensor_attr->index; 1149 1150 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point])); 1151 } 1152 1153 static ssize_t set_auto_temp(struct device *dev, 1154 struct device_attribute *attr, const char *buf, size_t count) 1155 { 1156 struct it87_data *data = dev_get_drvdata(dev); 1157 struct sensor_device_attribute_2 *sensor_attr = 1158 to_sensor_dev_attr_2(attr); 1159 int nr = sensor_attr->nr; 1160 int point = sensor_attr->index; 1161 long val; 1162 1163 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000) 1164 return -EINVAL; 1165 1166 mutex_lock(&data->update_lock); 1167 data->auto_temp[nr][point] = TEMP_TO_REG(val); 1168 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), 1169 data->auto_temp[nr][point]); 1170 mutex_unlock(&data->update_lock); 1171 return count; 1172 } 1173 1174 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0); 1175 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1176 0, 1); 1177 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div, 1178 set_fan_div, 0); 1179 1180 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0); 1181 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1182 1, 1); 1183 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div, 1184 set_fan_div, 1); 1185 1186 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0); 1187 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1188 2, 1); 1189 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div, 1190 set_fan_div, 2); 1191 1192 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0); 1193 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1194 3, 1); 1195 1196 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0); 1197 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1198 4, 1); 1199 1200 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, 1201 show_pwm_enable, set_pwm_enable, 0); 1202 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0); 1203 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq); 1204 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR, 1205 show_pwm_temp_map, set_pwm_temp_map, 0); 1206 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, 1207 show_auto_pwm, set_auto_pwm, 0, 0); 1208 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, 1209 show_auto_pwm, set_auto_pwm, 0, 1); 1210 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR, 1211 show_auto_pwm, set_auto_pwm, 0, 2); 1212 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO, 1213 show_auto_pwm, NULL, 0, 3); 1214 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR, 1215 show_auto_temp, set_auto_temp, 0, 1); 1216 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, 1217 show_auto_temp, set_auto_temp, 0, 0); 1218 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR, 1219 show_auto_temp, set_auto_temp, 0, 2); 1220 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR, 1221 show_auto_temp, set_auto_temp, 0, 3); 1222 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR, 1223 show_auto_temp, set_auto_temp, 0, 4); 1224 1225 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, 1226 show_pwm_enable, set_pwm_enable, 1); 1227 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1); 1228 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL); 1229 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR, 1230 show_pwm_temp_map, set_pwm_temp_map, 1); 1231 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, 1232 show_auto_pwm, set_auto_pwm, 1, 0); 1233 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, 1234 show_auto_pwm, set_auto_pwm, 1, 1); 1235 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR, 1236 show_auto_pwm, set_auto_pwm, 1, 2); 1237 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO, 1238 show_auto_pwm, NULL, 1, 3); 1239 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR, 1240 show_auto_temp, set_auto_temp, 1, 1); 1241 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, 1242 show_auto_temp, set_auto_temp, 1, 0); 1243 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR, 1244 show_auto_temp, set_auto_temp, 1, 2); 1245 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR, 1246 show_auto_temp, set_auto_temp, 1, 3); 1247 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR, 1248 show_auto_temp, set_auto_temp, 1, 4); 1249 1250 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, 1251 show_pwm_enable, set_pwm_enable, 2); 1252 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2); 1253 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL); 1254 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR, 1255 show_pwm_temp_map, set_pwm_temp_map, 2); 1256 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, 1257 show_auto_pwm, set_auto_pwm, 2, 0); 1258 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, 1259 show_auto_pwm, set_auto_pwm, 2, 1); 1260 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR, 1261 show_auto_pwm, set_auto_pwm, 2, 2); 1262 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO, 1263 show_auto_pwm, NULL, 2, 3); 1264 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR, 1265 show_auto_temp, set_auto_temp, 2, 1); 1266 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, 1267 show_auto_temp, set_auto_temp, 2, 0); 1268 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR, 1269 show_auto_temp, set_auto_temp, 2, 2); 1270 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR, 1271 show_auto_temp, set_auto_temp, 2, 3); 1272 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR, 1273 show_auto_temp, set_auto_temp, 2, 4); 1274 1275 /* Alarms */ 1276 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, 1277 char *buf) 1278 { 1279 struct it87_data *data = it87_update_device(dev); 1280 return sprintf(buf, "%u\n", data->alarms); 1281 } 1282 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 1283 1284 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 1285 char *buf) 1286 { 1287 int bitnr = to_sensor_dev_attr(attr)->index; 1288 struct it87_data *data = it87_update_device(dev); 1289 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 1290 } 1291 1292 static ssize_t clear_intrusion(struct device *dev, struct device_attribute 1293 *attr, const char *buf, size_t count) 1294 { 1295 struct it87_data *data = dev_get_drvdata(dev); 1296 long val; 1297 int config; 1298 1299 if (kstrtol(buf, 10, &val) < 0 || val != 0) 1300 return -EINVAL; 1301 1302 mutex_lock(&data->update_lock); 1303 config = it87_read_value(data, IT87_REG_CONFIG); 1304 if (config < 0) { 1305 count = config; 1306 } else { 1307 config |= 1 << 5; 1308 it87_write_value(data, IT87_REG_CONFIG, config); 1309 /* Invalidate cache to force re-read */ 1310 data->valid = 0; 1311 } 1312 mutex_unlock(&data->update_lock); 1313 1314 return count; 1315 } 1316 1317 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); 1318 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); 1319 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); 1320 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11); 1321 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12); 1322 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13); 1323 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14); 1324 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15); 1325 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0); 1326 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1); 1327 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2); 1328 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3); 1329 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); 1330 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); 1331 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); 1332 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); 1333 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR, 1334 show_alarm, clear_intrusion, 4); 1335 1336 static ssize_t show_beep(struct device *dev, struct device_attribute *attr, 1337 char *buf) 1338 { 1339 int bitnr = to_sensor_dev_attr(attr)->index; 1340 struct it87_data *data = it87_update_device(dev); 1341 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1); 1342 } 1343 static ssize_t set_beep(struct device *dev, struct device_attribute *attr, 1344 const char *buf, size_t count) 1345 { 1346 int bitnr = to_sensor_dev_attr(attr)->index; 1347 struct it87_data *data = dev_get_drvdata(dev); 1348 long val; 1349 1350 if (kstrtol(buf, 10, &val) < 0 1351 || (val != 0 && val != 1)) 1352 return -EINVAL; 1353 1354 mutex_lock(&data->update_lock); 1355 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 1356 if (val) 1357 data->beeps |= (1 << bitnr); 1358 else 1359 data->beeps &= ~(1 << bitnr); 1360 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps); 1361 mutex_unlock(&data->update_lock); 1362 return count; 1363 } 1364 1365 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, 1366 show_beep, set_beep, 1); 1367 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1); 1368 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1); 1369 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1); 1370 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1); 1371 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1); 1372 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1); 1373 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1); 1374 /* fanX_beep writability is set later */ 1375 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0); 1376 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0); 1377 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0); 1378 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0); 1379 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0); 1380 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, 1381 show_beep, set_beep, 2); 1382 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2); 1383 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2); 1384 1385 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, 1386 char *buf) 1387 { 1388 struct it87_data *data = dev_get_drvdata(dev); 1389 return sprintf(buf, "%u\n", data->vrm); 1390 } 1391 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, 1392 const char *buf, size_t count) 1393 { 1394 struct it87_data *data = dev_get_drvdata(dev); 1395 unsigned long val; 1396 1397 if (kstrtoul(buf, 10, &val) < 0) 1398 return -EINVAL; 1399 1400 data->vrm = val; 1401 1402 return count; 1403 } 1404 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 1405 1406 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, 1407 char *buf) 1408 { 1409 struct it87_data *data = it87_update_device(dev); 1410 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); 1411 } 1412 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 1413 1414 static ssize_t show_label(struct device *dev, struct device_attribute *attr, 1415 char *buf) 1416 { 1417 static const char * const labels[] = { 1418 "+5V", 1419 "5VSB", 1420 "Vbat", 1421 }; 1422 static const char * const labels_it8721[] = { 1423 "+3.3V", 1424 "3VSB", 1425 "Vbat", 1426 }; 1427 struct it87_data *data = dev_get_drvdata(dev); 1428 int nr = to_sensor_dev_attr(attr)->index; 1429 1430 return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr] 1431 : labels[nr]); 1432 } 1433 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0); 1434 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1); 1435 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2); 1436 /* special AVCC3 IT8603E in9 */ 1437 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 0); 1438 1439 static ssize_t show_name(struct device *dev, struct device_attribute 1440 *devattr, char *buf) 1441 { 1442 struct it87_data *data = dev_get_drvdata(dev); 1443 return sprintf(buf, "%s\n", data->name); 1444 } 1445 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); 1446 1447 static struct attribute *it87_attributes_in[10][5] = { 1448 { 1449 &sensor_dev_attr_in0_input.dev_attr.attr, 1450 &sensor_dev_attr_in0_min.dev_attr.attr, 1451 &sensor_dev_attr_in0_max.dev_attr.attr, 1452 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1453 NULL 1454 }, { 1455 &sensor_dev_attr_in1_input.dev_attr.attr, 1456 &sensor_dev_attr_in1_min.dev_attr.attr, 1457 &sensor_dev_attr_in1_max.dev_attr.attr, 1458 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1459 NULL 1460 }, { 1461 &sensor_dev_attr_in2_input.dev_attr.attr, 1462 &sensor_dev_attr_in2_min.dev_attr.attr, 1463 &sensor_dev_attr_in2_max.dev_attr.attr, 1464 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1465 NULL 1466 }, { 1467 &sensor_dev_attr_in3_input.dev_attr.attr, 1468 &sensor_dev_attr_in3_min.dev_attr.attr, 1469 &sensor_dev_attr_in3_max.dev_attr.attr, 1470 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1471 NULL 1472 }, { 1473 &sensor_dev_attr_in4_input.dev_attr.attr, 1474 &sensor_dev_attr_in4_min.dev_attr.attr, 1475 &sensor_dev_attr_in4_max.dev_attr.attr, 1476 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1477 NULL 1478 }, { 1479 &sensor_dev_attr_in5_input.dev_attr.attr, 1480 &sensor_dev_attr_in5_min.dev_attr.attr, 1481 &sensor_dev_attr_in5_max.dev_attr.attr, 1482 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1483 NULL 1484 }, { 1485 &sensor_dev_attr_in6_input.dev_attr.attr, 1486 &sensor_dev_attr_in6_min.dev_attr.attr, 1487 &sensor_dev_attr_in6_max.dev_attr.attr, 1488 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1489 NULL 1490 }, { 1491 &sensor_dev_attr_in7_input.dev_attr.attr, 1492 &sensor_dev_attr_in7_min.dev_attr.attr, 1493 &sensor_dev_attr_in7_max.dev_attr.attr, 1494 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1495 NULL 1496 }, { 1497 &sensor_dev_attr_in8_input.dev_attr.attr, 1498 NULL 1499 }, { 1500 &sensor_dev_attr_in9_input.dev_attr.attr, 1501 NULL 1502 } }; 1503 1504 static const struct attribute_group it87_group_in[10] = { 1505 { .attrs = it87_attributes_in[0] }, 1506 { .attrs = it87_attributes_in[1] }, 1507 { .attrs = it87_attributes_in[2] }, 1508 { .attrs = it87_attributes_in[3] }, 1509 { .attrs = it87_attributes_in[4] }, 1510 { .attrs = it87_attributes_in[5] }, 1511 { .attrs = it87_attributes_in[6] }, 1512 { .attrs = it87_attributes_in[7] }, 1513 { .attrs = it87_attributes_in[8] }, 1514 { .attrs = it87_attributes_in[9] }, 1515 }; 1516 1517 static struct attribute *it87_attributes_temp[3][6] = { 1518 { 1519 &sensor_dev_attr_temp1_input.dev_attr.attr, 1520 &sensor_dev_attr_temp1_max.dev_attr.attr, 1521 &sensor_dev_attr_temp1_min.dev_attr.attr, 1522 &sensor_dev_attr_temp1_type.dev_attr.attr, 1523 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1524 NULL 1525 } , { 1526 &sensor_dev_attr_temp2_input.dev_attr.attr, 1527 &sensor_dev_attr_temp2_max.dev_attr.attr, 1528 &sensor_dev_attr_temp2_min.dev_attr.attr, 1529 &sensor_dev_attr_temp2_type.dev_attr.attr, 1530 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1531 NULL 1532 } , { 1533 &sensor_dev_attr_temp3_input.dev_attr.attr, 1534 &sensor_dev_attr_temp3_max.dev_attr.attr, 1535 &sensor_dev_attr_temp3_min.dev_attr.attr, 1536 &sensor_dev_attr_temp3_type.dev_attr.attr, 1537 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1538 NULL 1539 } }; 1540 1541 static const struct attribute_group it87_group_temp[3] = { 1542 { .attrs = it87_attributes_temp[0] }, 1543 { .attrs = it87_attributes_temp[1] }, 1544 { .attrs = it87_attributes_temp[2] }, 1545 }; 1546 1547 static struct attribute *it87_attributes_temp_offset[] = { 1548 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1549 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1550 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1551 }; 1552 1553 static struct attribute *it87_attributes[] = { 1554 &dev_attr_alarms.attr, 1555 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr, 1556 &dev_attr_name.attr, 1557 NULL 1558 }; 1559 1560 static const struct attribute_group it87_group = { 1561 .attrs = it87_attributes, 1562 }; 1563 1564 static struct attribute *it87_attributes_in_beep[] = { 1565 &sensor_dev_attr_in0_beep.dev_attr.attr, 1566 &sensor_dev_attr_in1_beep.dev_attr.attr, 1567 &sensor_dev_attr_in2_beep.dev_attr.attr, 1568 &sensor_dev_attr_in3_beep.dev_attr.attr, 1569 &sensor_dev_attr_in4_beep.dev_attr.attr, 1570 &sensor_dev_attr_in5_beep.dev_attr.attr, 1571 &sensor_dev_attr_in6_beep.dev_attr.attr, 1572 &sensor_dev_attr_in7_beep.dev_attr.attr, 1573 NULL, 1574 NULL, 1575 }; 1576 1577 static struct attribute *it87_attributes_temp_beep[] = { 1578 &sensor_dev_attr_temp1_beep.dev_attr.attr, 1579 &sensor_dev_attr_temp2_beep.dev_attr.attr, 1580 &sensor_dev_attr_temp3_beep.dev_attr.attr, 1581 }; 1582 1583 static struct attribute *it87_attributes_fan[5][3+1] = { { 1584 &sensor_dev_attr_fan1_input.dev_attr.attr, 1585 &sensor_dev_attr_fan1_min.dev_attr.attr, 1586 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1587 NULL 1588 }, { 1589 &sensor_dev_attr_fan2_input.dev_attr.attr, 1590 &sensor_dev_attr_fan2_min.dev_attr.attr, 1591 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1592 NULL 1593 }, { 1594 &sensor_dev_attr_fan3_input.dev_attr.attr, 1595 &sensor_dev_attr_fan3_min.dev_attr.attr, 1596 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1597 NULL 1598 }, { 1599 &sensor_dev_attr_fan4_input.dev_attr.attr, 1600 &sensor_dev_attr_fan4_min.dev_attr.attr, 1601 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1602 NULL 1603 }, { 1604 &sensor_dev_attr_fan5_input.dev_attr.attr, 1605 &sensor_dev_attr_fan5_min.dev_attr.attr, 1606 &sensor_dev_attr_fan5_alarm.dev_attr.attr, 1607 NULL 1608 } }; 1609 1610 static const struct attribute_group it87_group_fan[5] = { 1611 { .attrs = it87_attributes_fan[0] }, 1612 { .attrs = it87_attributes_fan[1] }, 1613 { .attrs = it87_attributes_fan[2] }, 1614 { .attrs = it87_attributes_fan[3] }, 1615 { .attrs = it87_attributes_fan[4] }, 1616 }; 1617 1618 static const struct attribute *it87_attributes_fan_div[] = { 1619 &sensor_dev_attr_fan1_div.dev_attr.attr, 1620 &sensor_dev_attr_fan2_div.dev_attr.attr, 1621 &sensor_dev_attr_fan3_div.dev_attr.attr, 1622 }; 1623 1624 static struct attribute *it87_attributes_pwm[3][4+1] = { { 1625 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1626 &sensor_dev_attr_pwm1.dev_attr.attr, 1627 &dev_attr_pwm1_freq.attr, 1628 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1629 NULL 1630 }, { 1631 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1632 &sensor_dev_attr_pwm2.dev_attr.attr, 1633 &dev_attr_pwm2_freq.attr, 1634 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1635 NULL 1636 }, { 1637 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1638 &sensor_dev_attr_pwm3.dev_attr.attr, 1639 &dev_attr_pwm3_freq.attr, 1640 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1641 NULL 1642 } }; 1643 1644 static const struct attribute_group it87_group_pwm[3] = { 1645 { .attrs = it87_attributes_pwm[0] }, 1646 { .attrs = it87_attributes_pwm[1] }, 1647 { .attrs = it87_attributes_pwm[2] }, 1648 }; 1649 1650 static struct attribute *it87_attributes_autopwm[3][9+1] = { { 1651 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1652 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1653 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, 1654 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, 1655 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, 1656 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, 1657 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, 1658 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, 1659 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, 1660 NULL 1661 }, { 1662 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1663 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1664 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, 1665 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, 1666 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, 1667 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr, 1668 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, 1669 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, 1670 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, 1671 NULL 1672 }, { 1673 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1674 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1675 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr, 1676 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr, 1677 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, 1678 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr, 1679 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, 1680 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr, 1681 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr, 1682 NULL 1683 } }; 1684 1685 static const struct attribute_group it87_group_autopwm[3] = { 1686 { .attrs = it87_attributes_autopwm[0] }, 1687 { .attrs = it87_attributes_autopwm[1] }, 1688 { .attrs = it87_attributes_autopwm[2] }, 1689 }; 1690 1691 static struct attribute *it87_attributes_fan_beep[] = { 1692 &sensor_dev_attr_fan1_beep.dev_attr.attr, 1693 &sensor_dev_attr_fan2_beep.dev_attr.attr, 1694 &sensor_dev_attr_fan3_beep.dev_attr.attr, 1695 &sensor_dev_attr_fan4_beep.dev_attr.attr, 1696 &sensor_dev_attr_fan5_beep.dev_attr.attr, 1697 }; 1698 1699 static struct attribute *it87_attributes_vid[] = { 1700 &dev_attr_vrm.attr, 1701 &dev_attr_cpu0_vid.attr, 1702 NULL 1703 }; 1704 1705 static const struct attribute_group it87_group_vid = { 1706 .attrs = it87_attributes_vid, 1707 }; 1708 1709 static struct attribute *it87_attributes_label[] = { 1710 &sensor_dev_attr_in3_label.dev_attr.attr, 1711 &sensor_dev_attr_in7_label.dev_attr.attr, 1712 &sensor_dev_attr_in8_label.dev_attr.attr, 1713 &sensor_dev_attr_in9_label.dev_attr.attr, 1714 NULL 1715 }; 1716 1717 static const struct attribute_group it87_group_label = { 1718 .attrs = it87_attributes_label, 1719 }; 1720 1721 /* SuperIO detection - will change isa_address if a chip is found */ 1722 static int __init it87_find(unsigned short *address, 1723 struct it87_sio_data *sio_data) 1724 { 1725 int err; 1726 u16 chip_type; 1727 const char *board_vendor, *board_name; 1728 1729 err = superio_enter(); 1730 if (err) 1731 return err; 1732 1733 err = -ENODEV; 1734 chip_type = force_id ? force_id : superio_inw(DEVID); 1735 1736 switch (chip_type) { 1737 case IT8705F_DEVID: 1738 sio_data->type = it87; 1739 break; 1740 case IT8712F_DEVID: 1741 sio_data->type = it8712; 1742 break; 1743 case IT8716F_DEVID: 1744 case IT8726F_DEVID: 1745 sio_data->type = it8716; 1746 break; 1747 case IT8718F_DEVID: 1748 sio_data->type = it8718; 1749 break; 1750 case IT8720F_DEVID: 1751 sio_data->type = it8720; 1752 break; 1753 case IT8721F_DEVID: 1754 sio_data->type = it8721; 1755 break; 1756 case IT8728F_DEVID: 1757 sio_data->type = it8728; 1758 break; 1759 case IT8771E_DEVID: 1760 sio_data->type = it8771; 1761 break; 1762 case IT8772E_DEVID: 1763 sio_data->type = it8772; 1764 break; 1765 case IT8782F_DEVID: 1766 sio_data->type = it8782; 1767 break; 1768 case IT8783E_DEVID: 1769 sio_data->type = it8783; 1770 break; 1771 case IT8603E_DEVID: 1772 case IT8623E_DEVID: 1773 sio_data->type = it8603; 1774 break; 1775 case 0xffff: /* No device at all */ 1776 goto exit; 1777 default: 1778 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type); 1779 goto exit; 1780 } 1781 1782 superio_select(PME); 1783 if (!(superio_inb(IT87_ACT_REG) & 0x01)) { 1784 pr_info("Device not activated, skipping\n"); 1785 goto exit; 1786 } 1787 1788 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); 1789 if (*address == 0) { 1790 pr_info("Base address not set, skipping\n"); 1791 goto exit; 1792 } 1793 1794 err = 0; 1795 sio_data->revision = superio_inb(DEVREV) & 0x0f; 1796 pr_info("Found IT%04x%c chip at 0x%x, revision %d\n", chip_type, 1797 chip_type == 0x8771 || chip_type == 0x8772 || 1798 chip_type == 0x8603 ? 'E' : 'F', *address, 1799 sio_data->revision); 1800 1801 /* in8 (Vbat) is always internal */ 1802 sio_data->internal = (1 << 2); 1803 /* Only the IT8603E has in9 */ 1804 if (sio_data->type != it8603) 1805 sio_data->skip_in |= (1 << 9); 1806 1807 /* Read GPIO config and VID value from LDN 7 (GPIO) */ 1808 if (sio_data->type == it87) { 1809 /* The IT8705F doesn't have VID pins at all */ 1810 sio_data->skip_vid = 1; 1811 1812 /* The IT8705F has a different LD number for GPIO */ 1813 superio_select(5); 1814 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1815 } else if (sio_data->type == it8783) { 1816 int reg25, reg27, reg2a, reg2c, regef; 1817 1818 sio_data->skip_vid = 1; /* No VID */ 1819 1820 superio_select(GPIO); 1821 1822 reg25 = superio_inb(IT87_SIO_GPIO1_REG); 1823 reg27 = superio_inb(IT87_SIO_GPIO3_REG); 1824 reg2a = superio_inb(IT87_SIO_PINX1_REG); 1825 reg2c = superio_inb(IT87_SIO_PINX2_REG); 1826 regef = superio_inb(IT87_SIO_SPI_REG); 1827 1828 /* Check if fan3 is there or not */ 1829 if ((reg27 & (1 << 0)) || !(reg2c & (1 << 2))) 1830 sio_data->skip_fan |= (1 << 2); 1831 if ((reg25 & (1 << 4)) 1832 || (!(reg2a & (1 << 1)) && (regef & (1 << 0)))) 1833 sio_data->skip_pwm |= (1 << 2); 1834 1835 /* Check if fan2 is there or not */ 1836 if (reg27 & (1 << 7)) 1837 sio_data->skip_fan |= (1 << 1); 1838 if (reg27 & (1 << 3)) 1839 sio_data->skip_pwm |= (1 << 1); 1840 1841 /* VIN5 */ 1842 if ((reg27 & (1 << 0)) || (reg2c & (1 << 2))) 1843 sio_data->skip_in |= (1 << 5); /* No VIN5 */ 1844 1845 /* VIN6 */ 1846 if (reg27 & (1 << 1)) 1847 sio_data->skip_in |= (1 << 6); /* No VIN6 */ 1848 1849 /* 1850 * VIN7 1851 * Does not depend on bit 2 of Reg2C, contrary to datasheet. 1852 */ 1853 if (reg27 & (1 << 2)) { 1854 /* 1855 * The data sheet is a bit unclear regarding the 1856 * internal voltage divider for VCCH5V. It says 1857 * "This bit enables and switches VIN7 (pin 91) to the 1858 * internal voltage divider for VCCH5V". 1859 * This is different to other chips, where the internal 1860 * voltage divider would connect VIN7 to an internal 1861 * voltage source. Maybe that is the case here as well. 1862 * 1863 * Since we don't know for sure, re-route it if that is 1864 * not the case, and ask the user to report if the 1865 * resulting voltage is sane. 1866 */ 1867 if (!(reg2c & (1 << 1))) { 1868 reg2c |= (1 << 1); 1869 superio_outb(IT87_SIO_PINX2_REG, reg2c); 1870 pr_notice("Routing internal VCCH5V to in7.\n"); 1871 } 1872 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n"); 1873 pr_notice("Please report if it displays a reasonable voltage.\n"); 1874 } 1875 1876 if (reg2c & (1 << 0)) 1877 sio_data->internal |= (1 << 0); 1878 if (reg2c & (1 << 1)) 1879 sio_data->internal |= (1 << 1); 1880 1881 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1882 } else if (sio_data->type == it8603) { 1883 int reg27, reg29; 1884 1885 sio_data->skip_vid = 1; /* No VID */ 1886 superio_select(GPIO); 1887 1888 reg27 = superio_inb(IT87_SIO_GPIO3_REG); 1889 1890 /* Check if fan3 is there or not */ 1891 if (reg27 & (1 << 6)) 1892 sio_data->skip_pwm |= (1 << 2); 1893 if (reg27 & (1 << 7)) 1894 sio_data->skip_fan |= (1 << 2); 1895 1896 /* Check if fan2 is there or not */ 1897 reg29 = superio_inb(IT87_SIO_GPIO5_REG); 1898 if (reg29 & (1 << 1)) 1899 sio_data->skip_pwm |= (1 << 1); 1900 if (reg29 & (1 << 2)) 1901 sio_data->skip_fan |= (1 << 1); 1902 1903 sio_data->skip_in |= (1 << 5); /* No VIN5 */ 1904 sio_data->skip_in |= (1 << 6); /* No VIN6 */ 1905 1906 /* no fan4 */ 1907 sio_data->skip_pwm |= (1 << 3); 1908 sio_data->skip_fan |= (1 << 3); 1909 1910 sio_data->internal |= (1 << 1); /* in7 is VSB */ 1911 sio_data->internal |= (1 << 3); /* in9 is AVCC */ 1912 1913 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1914 } else { 1915 int reg; 1916 bool uart6; 1917 1918 superio_select(GPIO); 1919 1920 reg = superio_inb(IT87_SIO_GPIO3_REG); 1921 if (sio_data->type == it8721 || sio_data->type == it8728 || 1922 sio_data->type == it8771 || sio_data->type == it8772 || 1923 sio_data->type == it8782) { 1924 /* 1925 * IT8721F/IT8758E, and IT8782F don't have VID pins 1926 * at all, not sure about the IT8728F and compatibles. 1927 */ 1928 sio_data->skip_vid = 1; 1929 } else { 1930 /* We need at least 4 VID pins */ 1931 if (reg & 0x0f) { 1932 pr_info("VID is disabled (pins used for GPIO)\n"); 1933 sio_data->skip_vid = 1; 1934 } 1935 } 1936 1937 /* Check if fan3 is there or not */ 1938 if (reg & (1 << 6)) 1939 sio_data->skip_pwm |= (1 << 2); 1940 if (reg & (1 << 7)) 1941 sio_data->skip_fan |= (1 << 2); 1942 1943 /* Check if fan2 is there or not */ 1944 reg = superio_inb(IT87_SIO_GPIO5_REG); 1945 if (reg & (1 << 1)) 1946 sio_data->skip_pwm |= (1 << 1); 1947 if (reg & (1 << 2)) 1948 sio_data->skip_fan |= (1 << 1); 1949 1950 if ((sio_data->type == it8718 || sio_data->type == it8720) 1951 && !(sio_data->skip_vid)) 1952 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); 1953 1954 reg = superio_inb(IT87_SIO_PINX2_REG); 1955 1956 uart6 = sio_data->type == it8782 && (reg & (1 << 2)); 1957 1958 /* 1959 * The IT8720F has no VIN7 pin, so VCCH should always be 1960 * routed internally to VIN7 with an internal divider. 1961 * Curiously, there still is a configuration bit to control 1962 * this, which means it can be set incorrectly. And even 1963 * more curiously, many boards out there are improperly 1964 * configured, even though the IT8720F datasheet claims 1965 * that the internal routing of VCCH to VIN7 is the default 1966 * setting. So we force the internal routing in this case. 1967 * 1968 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins. 1969 * If UART6 is enabled, re-route VIN7 to the internal divider 1970 * if that is not already the case. 1971 */ 1972 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) { 1973 reg |= (1 << 1); 1974 superio_outb(IT87_SIO_PINX2_REG, reg); 1975 pr_notice("Routing internal VCCH to in7\n"); 1976 } 1977 if (reg & (1 << 0)) 1978 sio_data->internal |= (1 << 0); 1979 if ((reg & (1 << 1)) || sio_data->type == it8721 || 1980 sio_data->type == it8728 || 1981 sio_data->type == it8771 || 1982 sio_data->type == it8772) 1983 sio_data->internal |= (1 << 1); 1984 1985 /* 1986 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7. 1987 * While VIN7 can be routed to the internal voltage divider, 1988 * VIN5 and VIN6 are not available if UART6 is enabled. 1989 * 1990 * Also, temp3 is not available if UART6 is enabled and TEMPIN3 1991 * is the temperature source. Since we can not read the 1992 * temperature source here, skip_temp is preliminary. 1993 */ 1994 if (uart6) { 1995 sio_data->skip_in |= (1 << 5) | (1 << 6); 1996 sio_data->skip_temp |= (1 << 2); 1997 } 1998 1999 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 2000 } 2001 if (sio_data->beep_pin) 2002 pr_info("Beeping is supported\n"); 2003 2004 /* Disable specific features based on DMI strings */ 2005 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); 2006 board_name = dmi_get_system_info(DMI_BOARD_NAME); 2007 if (board_vendor && board_name) { 2008 if (strcmp(board_vendor, "nVIDIA") == 0 2009 && strcmp(board_name, "FN68PT") == 0) { 2010 /* 2011 * On the Shuttle SN68PT, FAN_CTL2 is apparently not 2012 * connected to a fan, but to something else. One user 2013 * has reported instant system power-off when changing 2014 * the PWM2 duty cycle, so we disable it. 2015 * I use the board name string as the trigger in case 2016 * the same board is ever used in other systems. 2017 */ 2018 pr_info("Disabling pwm2 due to hardware constraints\n"); 2019 sio_data->skip_pwm = (1 << 1); 2020 } 2021 } 2022 2023 exit: 2024 superio_exit(); 2025 return err; 2026 } 2027 2028 static void it87_remove_files(struct device *dev) 2029 { 2030 struct it87_data *data = platform_get_drvdata(pdev); 2031 struct it87_sio_data *sio_data = dev_get_platdata(dev); 2032 int i; 2033 2034 sysfs_remove_group(&dev->kobj, &it87_group); 2035 for (i = 0; i < 10; i++) { 2036 if (sio_data->skip_in & (1 << i)) 2037 continue; 2038 sysfs_remove_group(&dev->kobj, &it87_group_in[i]); 2039 if (it87_attributes_in_beep[i]) 2040 sysfs_remove_file(&dev->kobj, 2041 it87_attributes_in_beep[i]); 2042 } 2043 for (i = 0; i < 3; i++) { 2044 if (!(data->has_temp & (1 << i))) 2045 continue; 2046 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]); 2047 if (has_temp_offset(data)) 2048 sysfs_remove_file(&dev->kobj, 2049 it87_attributes_temp_offset[i]); 2050 if (sio_data->beep_pin) 2051 sysfs_remove_file(&dev->kobj, 2052 it87_attributes_temp_beep[i]); 2053 } 2054 for (i = 0; i < 5; i++) { 2055 if (!(data->has_fan & (1 << i))) 2056 continue; 2057 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]); 2058 if (sio_data->beep_pin) 2059 sysfs_remove_file(&dev->kobj, 2060 it87_attributes_fan_beep[i]); 2061 if (i < 3 && !has_16bit_fans(data)) 2062 sysfs_remove_file(&dev->kobj, 2063 it87_attributes_fan_div[i]); 2064 } 2065 for (i = 0; i < 3; i++) { 2066 if (sio_data->skip_pwm & (1 << 0)) 2067 continue; 2068 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]); 2069 if (has_old_autopwm(data)) 2070 sysfs_remove_group(&dev->kobj, 2071 &it87_group_autopwm[i]); 2072 } 2073 if (!sio_data->skip_vid) 2074 sysfs_remove_group(&dev->kobj, &it87_group_vid); 2075 sysfs_remove_group(&dev->kobj, &it87_group_label); 2076 } 2077 2078 static int it87_probe(struct platform_device *pdev) 2079 { 2080 struct it87_data *data; 2081 struct resource *res; 2082 struct device *dev = &pdev->dev; 2083 struct it87_sio_data *sio_data = dev_get_platdata(dev); 2084 int err = 0, i; 2085 int enable_pwm_interface; 2086 int fan_beep_need_rw; 2087 2088 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 2089 if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT, 2090 DRVNAME)) { 2091 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", 2092 (unsigned long)res->start, 2093 (unsigned long)(res->start + IT87_EC_EXTENT - 1)); 2094 return -EBUSY; 2095 } 2096 2097 data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL); 2098 if (!data) 2099 return -ENOMEM; 2100 2101 data->addr = res->start; 2102 data->type = sio_data->type; 2103 data->features = it87_devices[sio_data->type].features; 2104 data->peci_mask = it87_devices[sio_data->type].peci_mask; 2105 data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask; 2106 data->name = it87_devices[sio_data->type].name; 2107 /* 2108 * IT8705F Datasheet 0.4.1, 3h == Version G. 2109 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J. 2110 * These are the first revisions with 16-bit tachometer support. 2111 */ 2112 switch (data->type) { 2113 case it87: 2114 if (sio_data->revision >= 0x03) { 2115 data->features &= ~FEAT_OLD_AUTOPWM; 2116 data->features |= FEAT_16BIT_FANS; 2117 } 2118 break; 2119 case it8712: 2120 if (sio_data->revision >= 0x08) { 2121 data->features &= ~FEAT_OLD_AUTOPWM; 2122 data->features |= FEAT_16BIT_FANS; 2123 } 2124 break; 2125 default: 2126 break; 2127 } 2128 2129 /* Now, we do the remaining detection. */ 2130 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) 2131 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) 2132 return -ENODEV; 2133 2134 platform_set_drvdata(pdev, data); 2135 2136 mutex_init(&data->update_lock); 2137 2138 /* Check PWM configuration */ 2139 enable_pwm_interface = it87_check_pwm(dev); 2140 2141 /* Starting with IT8721F, we handle scaling of internal voltages */ 2142 if (has_12mv_adc(data)) { 2143 if (sio_data->internal & (1 << 0)) 2144 data->in_scaled |= (1 << 3); /* in3 is AVCC */ 2145 if (sio_data->internal & (1 << 1)) 2146 data->in_scaled |= (1 << 7); /* in7 is VSB */ 2147 if (sio_data->internal & (1 << 2)) 2148 data->in_scaled |= (1 << 8); /* in8 is Vbat */ 2149 if (sio_data->internal & (1 << 3)) 2150 data->in_scaled |= (1 << 9); /* in9 is AVCC */ 2151 } else if (sio_data->type == it8782 || sio_data->type == it8783) { 2152 if (sio_data->internal & (1 << 0)) 2153 data->in_scaled |= (1 << 3); /* in3 is VCC5V */ 2154 if (sio_data->internal & (1 << 1)) 2155 data->in_scaled |= (1 << 7); /* in7 is VCCH5V */ 2156 } 2157 2158 data->has_temp = 0x07; 2159 if (sio_data->skip_temp & (1 << 2)) { 2160 if (sio_data->type == it8782 2161 && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80)) 2162 data->has_temp &= ~(1 << 2); 2163 } 2164 2165 /* Initialize the IT87 chip */ 2166 it87_init_device(pdev); 2167 2168 /* Register sysfs hooks */ 2169 err = sysfs_create_group(&dev->kobj, &it87_group); 2170 if (err) 2171 return err; 2172 2173 for (i = 0; i < 10; i++) { 2174 if (sio_data->skip_in & (1 << i)) 2175 continue; 2176 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]); 2177 if (err) 2178 goto error; 2179 if (sio_data->beep_pin && it87_attributes_in_beep[i]) { 2180 err = sysfs_create_file(&dev->kobj, 2181 it87_attributes_in_beep[i]); 2182 if (err) 2183 goto error; 2184 } 2185 } 2186 2187 for (i = 0; i < 3; i++) { 2188 if (!(data->has_temp & (1 << i))) 2189 continue; 2190 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]); 2191 if (err) 2192 goto error; 2193 if (has_temp_offset(data)) { 2194 err = sysfs_create_file(&dev->kobj, 2195 it87_attributes_temp_offset[i]); 2196 if (err) 2197 goto error; 2198 } 2199 if (sio_data->beep_pin) { 2200 err = sysfs_create_file(&dev->kobj, 2201 it87_attributes_temp_beep[i]); 2202 if (err) 2203 goto error; 2204 } 2205 } 2206 2207 /* Do not create fan files for disabled fans */ 2208 fan_beep_need_rw = 1; 2209 for (i = 0; i < 5; i++) { 2210 if (!(data->has_fan & (1 << i))) 2211 continue; 2212 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]); 2213 if (err) 2214 goto error; 2215 2216 if (i < 3 && !has_16bit_fans(data)) { 2217 err = sysfs_create_file(&dev->kobj, 2218 it87_attributes_fan_div[i]); 2219 if (err) 2220 goto error; 2221 } 2222 2223 if (sio_data->beep_pin) { 2224 err = sysfs_create_file(&dev->kobj, 2225 it87_attributes_fan_beep[i]); 2226 if (err) 2227 goto error; 2228 if (!fan_beep_need_rw) 2229 continue; 2230 2231 /* 2232 * As we have a single beep enable bit for all fans, 2233 * only the first enabled fan has a writable attribute 2234 * for it. 2235 */ 2236 if (sysfs_chmod_file(&dev->kobj, 2237 it87_attributes_fan_beep[i], 2238 S_IRUGO | S_IWUSR)) 2239 dev_dbg(dev, "chmod +w fan%d_beep failed\n", 2240 i + 1); 2241 fan_beep_need_rw = 0; 2242 } 2243 } 2244 2245 if (enable_pwm_interface) { 2246 for (i = 0; i < 3; i++) { 2247 if (sio_data->skip_pwm & (1 << i)) 2248 continue; 2249 err = sysfs_create_group(&dev->kobj, 2250 &it87_group_pwm[i]); 2251 if (err) 2252 goto error; 2253 2254 if (!has_old_autopwm(data)) 2255 continue; 2256 err = sysfs_create_group(&dev->kobj, 2257 &it87_group_autopwm[i]); 2258 if (err) 2259 goto error; 2260 } 2261 } 2262 2263 if (!sio_data->skip_vid) { 2264 data->vrm = vid_which_vrm(); 2265 /* VID reading from Super-I/O config space if available */ 2266 data->vid = sio_data->vid_value; 2267 err = sysfs_create_group(&dev->kobj, &it87_group_vid); 2268 if (err) 2269 goto error; 2270 } 2271 2272 /* Export labels for internal sensors */ 2273 for (i = 0; i < 4; i++) { 2274 if (!(sio_data->internal & (1 << i))) 2275 continue; 2276 err = sysfs_create_file(&dev->kobj, 2277 it87_attributes_label[i]); 2278 if (err) 2279 goto error; 2280 } 2281 2282 data->hwmon_dev = hwmon_device_register(dev); 2283 if (IS_ERR(data->hwmon_dev)) { 2284 err = PTR_ERR(data->hwmon_dev); 2285 goto error; 2286 } 2287 2288 return 0; 2289 2290 error: 2291 it87_remove_files(dev); 2292 return err; 2293 } 2294 2295 static int it87_remove(struct platform_device *pdev) 2296 { 2297 struct it87_data *data = platform_get_drvdata(pdev); 2298 2299 hwmon_device_unregister(data->hwmon_dev); 2300 it87_remove_files(&pdev->dev); 2301 2302 return 0; 2303 } 2304 2305 /* 2306 * Must be called with data->update_lock held, except during initialization. 2307 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 2308 * would slow down the IT87 access and should not be necessary. 2309 */ 2310 static int it87_read_value(struct it87_data *data, u8 reg) 2311 { 2312 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 2313 return inb_p(data->addr + IT87_DATA_REG_OFFSET); 2314 } 2315 2316 /* 2317 * Must be called with data->update_lock held, except during initialization. 2318 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 2319 * would slow down the IT87 access and should not be necessary. 2320 */ 2321 static void it87_write_value(struct it87_data *data, u8 reg, u8 value) 2322 { 2323 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 2324 outb_p(value, data->addr + IT87_DATA_REG_OFFSET); 2325 } 2326 2327 /* Return 1 if and only if the PWM interface is safe to use */ 2328 static int it87_check_pwm(struct device *dev) 2329 { 2330 struct it87_data *data = dev_get_drvdata(dev); 2331 /* 2332 * Some BIOSes fail to correctly configure the IT87 fans. All fans off 2333 * and polarity set to active low is sign that this is the case so we 2334 * disable pwm control to protect the user. 2335 */ 2336 int tmp = it87_read_value(data, IT87_REG_FAN_CTL); 2337 if ((tmp & 0x87) == 0) { 2338 if (fix_pwm_polarity) { 2339 /* 2340 * The user asks us to attempt a chip reconfiguration. 2341 * This means switching to active high polarity and 2342 * inverting all fan speed values. 2343 */ 2344 int i; 2345 u8 pwm[3]; 2346 2347 for (i = 0; i < 3; i++) 2348 pwm[i] = it87_read_value(data, 2349 IT87_REG_PWM(i)); 2350 2351 /* 2352 * If any fan is in automatic pwm mode, the polarity 2353 * might be correct, as suspicious as it seems, so we 2354 * better don't change anything (but still disable the 2355 * PWM interface). 2356 */ 2357 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { 2358 dev_info(dev, 2359 "Reconfiguring PWM to active high polarity\n"); 2360 it87_write_value(data, IT87_REG_FAN_CTL, 2361 tmp | 0x87); 2362 for (i = 0; i < 3; i++) 2363 it87_write_value(data, 2364 IT87_REG_PWM(i), 2365 0x7f & ~pwm[i]); 2366 return 1; 2367 } 2368 2369 dev_info(dev, 2370 "PWM configuration is too broken to be fixed\n"); 2371 } 2372 2373 dev_info(dev, 2374 "Detected broken BIOS defaults, disabling PWM interface\n"); 2375 return 0; 2376 } else if (fix_pwm_polarity) { 2377 dev_info(dev, 2378 "PWM configuration looks sane, won't touch\n"); 2379 } 2380 2381 return 1; 2382 } 2383 2384 /* Called when we have found a new IT87. */ 2385 static void it87_init_device(struct platform_device *pdev) 2386 { 2387 struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev); 2388 struct it87_data *data = platform_get_drvdata(pdev); 2389 int tmp, i; 2390 u8 mask; 2391 2392 /* 2393 * For each PWM channel: 2394 * - If it is in automatic mode, setting to manual mode should set 2395 * the fan to full speed by default. 2396 * - If it is in manual mode, we need a mapping to temperature 2397 * channels to use when later setting to automatic mode later. 2398 * Use a 1:1 mapping by default (we are clueless.) 2399 * In both cases, the value can (and should) be changed by the user 2400 * prior to switching to a different mode. 2401 * Note that this is no longer needed for the IT8721F and later, as 2402 * these have separate registers for the temperature mapping and the 2403 * manual duty cycle. 2404 */ 2405 for (i = 0; i < 3; i++) { 2406 data->pwm_temp_map[i] = i; 2407 data->pwm_duty[i] = 0x7f; /* Full speed */ 2408 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */ 2409 } 2410 2411 /* 2412 * Some chips seem to have default value 0xff for all limit 2413 * registers. For low voltage limits it makes no sense and triggers 2414 * alarms, so change to 0 instead. For high temperature limits, it 2415 * means -1 degree C, which surprisingly doesn't trigger an alarm, 2416 * but is still confusing, so change to 127 degrees C. 2417 */ 2418 for (i = 0; i < 8; i++) { 2419 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); 2420 if (tmp == 0xff) 2421 it87_write_value(data, IT87_REG_VIN_MIN(i), 0); 2422 } 2423 for (i = 0; i < 3; i++) { 2424 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 2425 if (tmp == 0xff) 2426 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); 2427 } 2428 2429 /* 2430 * Temperature channels are not forcibly enabled, as they can be 2431 * set to two different sensor types and we can't guess which one 2432 * is correct for a given system. These channels can be enabled at 2433 * run-time through the temp{1-3}_type sysfs accessors if needed. 2434 */ 2435 2436 /* Check if voltage monitors are reset manually or by some reason */ 2437 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); 2438 if ((tmp & 0xff) == 0) { 2439 /* Enable all voltage monitors */ 2440 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); 2441 } 2442 2443 /* Check if tachometers are reset manually or by some reason */ 2444 mask = 0x70 & ~(sio_data->skip_fan << 4); 2445 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); 2446 if ((data->fan_main_ctrl & mask) == 0) { 2447 /* Enable all fan tachometers */ 2448 data->fan_main_ctrl |= mask; 2449 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 2450 data->fan_main_ctrl); 2451 } 2452 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; 2453 2454 /* Set tachometers to 16-bit mode if needed, IT8603E (and IT8728F?) 2455 * has it by default */ 2456 if (has_16bit_fans(data) && data->type != it8603) { 2457 tmp = it87_read_value(data, IT87_REG_FAN_16BIT); 2458 if (~tmp & 0x07 & data->has_fan) { 2459 dev_dbg(&pdev->dev, 2460 "Setting fan1-3 to 16-bit mode\n"); 2461 it87_write_value(data, IT87_REG_FAN_16BIT, 2462 tmp | 0x07); 2463 } 2464 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */ 2465 if (data->type != it87 && data->type != it8782 && 2466 data->type != it8783) { 2467 if (tmp & (1 << 4)) 2468 data->has_fan |= (1 << 3); /* fan4 enabled */ 2469 if (tmp & (1 << 5)) 2470 data->has_fan |= (1 << 4); /* fan5 enabled */ 2471 } 2472 } 2473 2474 /* Fan input pins may be used for alternative functions */ 2475 data->has_fan &= ~sio_data->skip_fan; 2476 2477 /* Start monitoring */ 2478 it87_write_value(data, IT87_REG_CONFIG, 2479 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e) 2480 | (update_vbat ? 0x41 : 0x01)); 2481 } 2482 2483 static void it87_update_pwm_ctrl(struct it87_data *data, int nr) 2484 { 2485 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr)); 2486 if (has_newer_autopwm(data)) { 2487 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; 2488 data->pwm_duty[nr] = it87_read_value(data, 2489 IT87_REG_PWM_DUTY(nr)); 2490 } else { 2491 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 2492 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; 2493 else /* Manual mode */ 2494 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f; 2495 } 2496 2497 if (has_old_autopwm(data)) { 2498 int i; 2499 2500 for (i = 0; i < 5 ; i++) 2501 data->auto_temp[nr][i] = it87_read_value(data, 2502 IT87_REG_AUTO_TEMP(nr, i)); 2503 for (i = 0; i < 3 ; i++) 2504 data->auto_pwm[nr][i] = it87_read_value(data, 2505 IT87_REG_AUTO_PWM(nr, i)); 2506 } 2507 } 2508 2509 static struct it87_data *it87_update_device(struct device *dev) 2510 { 2511 struct it87_data *data = dev_get_drvdata(dev); 2512 int i; 2513 2514 mutex_lock(&data->update_lock); 2515 2516 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 2517 || !data->valid) { 2518 if (update_vbat) { 2519 /* 2520 * Cleared after each update, so reenable. Value 2521 * returned by this read will be previous value 2522 */ 2523 it87_write_value(data, IT87_REG_CONFIG, 2524 it87_read_value(data, IT87_REG_CONFIG) | 0x40); 2525 } 2526 for (i = 0; i <= 7; i++) { 2527 data->in[i][0] = 2528 it87_read_value(data, IT87_REG_VIN(i)); 2529 data->in[i][1] = 2530 it87_read_value(data, IT87_REG_VIN_MIN(i)); 2531 data->in[i][2] = 2532 it87_read_value(data, IT87_REG_VIN_MAX(i)); 2533 } 2534 /* in8 (battery) has no limit registers */ 2535 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8)); 2536 if (data->type == it8603) 2537 data->in[9][0] = it87_read_value(data, 0x2f); 2538 2539 for (i = 0; i < 5; i++) { 2540 /* Skip disabled fans */ 2541 if (!(data->has_fan & (1 << i))) 2542 continue; 2543 2544 data->fan[i][1] = 2545 it87_read_value(data, IT87_REG_FAN_MIN[i]); 2546 data->fan[i][0] = it87_read_value(data, 2547 IT87_REG_FAN[i]); 2548 /* Add high byte if in 16-bit mode */ 2549 if (has_16bit_fans(data)) { 2550 data->fan[i][0] |= it87_read_value(data, 2551 IT87_REG_FANX[i]) << 8; 2552 data->fan[i][1] |= it87_read_value(data, 2553 IT87_REG_FANX_MIN[i]) << 8; 2554 } 2555 } 2556 for (i = 0; i < 3; i++) { 2557 if (!(data->has_temp & (1 << i))) 2558 continue; 2559 data->temp[i][0] = 2560 it87_read_value(data, IT87_REG_TEMP(i)); 2561 data->temp[i][1] = 2562 it87_read_value(data, IT87_REG_TEMP_LOW(i)); 2563 data->temp[i][2] = 2564 it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 2565 if (has_temp_offset(data)) 2566 data->temp[i][3] = 2567 it87_read_value(data, 2568 IT87_REG_TEMP_OFFSET[i]); 2569 } 2570 2571 /* Newer chips don't have clock dividers */ 2572 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) { 2573 i = it87_read_value(data, IT87_REG_FAN_DIV); 2574 data->fan_div[0] = i & 0x07; 2575 data->fan_div[1] = (i >> 3) & 0x07; 2576 data->fan_div[2] = (i & 0x40) ? 3 : 1; 2577 } 2578 2579 data->alarms = 2580 it87_read_value(data, IT87_REG_ALARM1) | 2581 (it87_read_value(data, IT87_REG_ALARM2) << 8) | 2582 (it87_read_value(data, IT87_REG_ALARM3) << 16); 2583 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 2584 2585 data->fan_main_ctrl = it87_read_value(data, 2586 IT87_REG_FAN_MAIN_CTRL); 2587 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); 2588 for (i = 0; i < 3; i++) 2589 it87_update_pwm_ctrl(data, i); 2590 2591 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); 2592 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA); 2593 /* 2594 * The IT8705F does not have VID capability. 2595 * The IT8718F and later don't use IT87_REG_VID for the 2596 * same purpose. 2597 */ 2598 if (data->type == it8712 || data->type == it8716) { 2599 data->vid = it87_read_value(data, IT87_REG_VID); 2600 /* 2601 * The older IT8712F revisions had only 5 VID pins, 2602 * but we assume it is always safe to read 6 bits. 2603 */ 2604 data->vid &= 0x3f; 2605 } 2606 data->last_updated = jiffies; 2607 data->valid = 1; 2608 } 2609 2610 mutex_unlock(&data->update_lock); 2611 2612 return data; 2613 } 2614 2615 static int __init it87_device_add(unsigned short address, 2616 const struct it87_sio_data *sio_data) 2617 { 2618 struct resource res = { 2619 .start = address + IT87_EC_OFFSET, 2620 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, 2621 .name = DRVNAME, 2622 .flags = IORESOURCE_IO, 2623 }; 2624 int err; 2625 2626 err = acpi_check_resource_conflict(&res); 2627 if (err) 2628 goto exit; 2629 2630 pdev = platform_device_alloc(DRVNAME, address); 2631 if (!pdev) { 2632 err = -ENOMEM; 2633 pr_err("Device allocation failed\n"); 2634 goto exit; 2635 } 2636 2637 err = platform_device_add_resources(pdev, &res, 1); 2638 if (err) { 2639 pr_err("Device resource addition failed (%d)\n", err); 2640 goto exit_device_put; 2641 } 2642 2643 err = platform_device_add_data(pdev, sio_data, 2644 sizeof(struct it87_sio_data)); 2645 if (err) { 2646 pr_err("Platform data allocation failed\n"); 2647 goto exit_device_put; 2648 } 2649 2650 err = platform_device_add(pdev); 2651 if (err) { 2652 pr_err("Device addition failed (%d)\n", err); 2653 goto exit_device_put; 2654 } 2655 2656 return 0; 2657 2658 exit_device_put: 2659 platform_device_put(pdev); 2660 exit: 2661 return err; 2662 } 2663 2664 static int __init sm_it87_init(void) 2665 { 2666 int err; 2667 unsigned short isa_address = 0; 2668 struct it87_sio_data sio_data; 2669 2670 memset(&sio_data, 0, sizeof(struct it87_sio_data)); 2671 err = it87_find(&isa_address, &sio_data); 2672 if (err) 2673 return err; 2674 err = platform_driver_register(&it87_driver); 2675 if (err) 2676 return err; 2677 2678 err = it87_device_add(isa_address, &sio_data); 2679 if (err) { 2680 platform_driver_unregister(&it87_driver); 2681 return err; 2682 } 2683 2684 return 0; 2685 } 2686 2687 static void __exit sm_it87_exit(void) 2688 { 2689 platform_device_unregister(pdev); 2690 platform_driver_unregister(&it87_driver); 2691 } 2692 2693 2694 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>"); 2695 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver"); 2696 module_param(update_vbat, bool, 0); 2697 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); 2698 module_param(fix_pwm_polarity, bool, 0); 2699 MODULE_PARM_DESC(fix_pwm_polarity, 2700 "Force PWM polarity to active high (DANGEROUS)"); 2701 MODULE_LICENSE("GPL"); 2702 2703 module_init(sm_it87_init); 2704 module_exit(sm_it87_exit); 2705