1 /* 2 * it87.c - Part of lm_sensors, Linux kernel modules for hardware 3 * monitoring. 4 * 5 * The IT8705F is an LPC-based Super I/O part that contains UARTs, a 6 * parallel port, an IR port, a MIDI port, a floppy controller, etc., in 7 * addition to an Environment Controller (Enhanced Hardware Monitor and 8 * Fan Controller) 9 * 10 * This driver supports only the Environment Controller in the IT8705F and 11 * similar parts. The other devices are supported by different drivers. 12 * 13 * Supports: IT8705F Super I/O chip w/LPC interface 14 * IT8712F Super I/O chip w/LPC interface 15 * IT8716F Super I/O chip w/LPC interface 16 * IT8718F Super I/O chip w/LPC interface 17 * IT8720F Super I/O chip w/LPC interface 18 * IT8721F Super I/O chip w/LPC interface 19 * IT8726F Super I/O chip w/LPC interface 20 * IT8728F Super I/O chip w/LPC interface 21 * IT8758E Super I/O chip w/LPC interface 22 * IT8771E Super I/O chip w/LPC interface 23 * IT8772E Super I/O chip w/LPC interface 24 * IT8782F Super I/O chip w/LPC interface 25 * IT8783E/F Super I/O chip w/LPC interface 26 * Sis950 A clone of the IT8705F 27 * 28 * Copyright (C) 2001 Chris Gauthron 29 * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org> 30 * 31 * This program is free software; you can redistribute it and/or modify 32 * it under the terms of the GNU General Public License as published by 33 * the Free Software Foundation; either version 2 of the License, or 34 * (at your option) any later version. 35 * 36 * This program is distributed in the hope that it will be useful, 37 * but WITHOUT ANY WARRANTY; without even the implied warranty of 38 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 39 * GNU General Public License for more details. 40 * 41 * You should have received a copy of the GNU General Public License 42 * along with this program; if not, write to the Free Software 43 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 44 */ 45 46 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 47 48 #include <linux/module.h> 49 #include <linux/init.h> 50 #include <linux/slab.h> 51 #include <linux/jiffies.h> 52 #include <linux/platform_device.h> 53 #include <linux/hwmon.h> 54 #include <linux/hwmon-sysfs.h> 55 #include <linux/hwmon-vid.h> 56 #include <linux/err.h> 57 #include <linux/mutex.h> 58 #include <linux/sysfs.h> 59 #include <linux/string.h> 60 #include <linux/dmi.h> 61 #include <linux/acpi.h> 62 #include <linux/io.h> 63 64 #define DRVNAME "it87" 65 66 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771, 67 it8772, it8782, it8783 }; 68 69 static unsigned short force_id; 70 module_param(force_id, ushort, 0); 71 MODULE_PARM_DESC(force_id, "Override the detected device ID"); 72 73 static struct platform_device *pdev; 74 75 #define REG 0x2e /* The register to read/write */ 76 #define DEV 0x07 /* Register: Logical device select */ 77 #define VAL 0x2f /* The value to read/write */ 78 #define PME 0x04 /* The device with the fan registers in it */ 79 80 /* The device with the IT8718F/IT8720F VID value in it */ 81 #define GPIO 0x07 82 83 #define DEVID 0x20 /* Register: Device ID */ 84 #define DEVREV 0x22 /* Register: Device Revision */ 85 86 static inline int superio_inb(int reg) 87 { 88 outb(reg, REG); 89 return inb(VAL); 90 } 91 92 static inline void superio_outb(int reg, int val) 93 { 94 outb(reg, REG); 95 outb(val, VAL); 96 } 97 98 static int superio_inw(int reg) 99 { 100 int val; 101 outb(reg++, REG); 102 val = inb(VAL) << 8; 103 outb(reg, REG); 104 val |= inb(VAL); 105 return val; 106 } 107 108 static inline void superio_select(int ldn) 109 { 110 outb(DEV, REG); 111 outb(ldn, VAL); 112 } 113 114 static inline int superio_enter(void) 115 { 116 /* 117 * Try to reserve REG and REG + 1 for exclusive access. 118 */ 119 if (!request_muxed_region(REG, 2, DRVNAME)) 120 return -EBUSY; 121 122 outb(0x87, REG); 123 outb(0x01, REG); 124 outb(0x55, REG); 125 outb(0x55, REG); 126 return 0; 127 } 128 129 static inline void superio_exit(void) 130 { 131 outb(0x02, REG); 132 outb(0x02, VAL); 133 release_region(REG, 2); 134 } 135 136 /* Logical device 4 registers */ 137 #define IT8712F_DEVID 0x8712 138 #define IT8705F_DEVID 0x8705 139 #define IT8716F_DEVID 0x8716 140 #define IT8718F_DEVID 0x8718 141 #define IT8720F_DEVID 0x8720 142 #define IT8721F_DEVID 0x8721 143 #define IT8726F_DEVID 0x8726 144 #define IT8728F_DEVID 0x8728 145 #define IT8771E_DEVID 0x8771 146 #define IT8772E_DEVID 0x8772 147 #define IT8782F_DEVID 0x8782 148 #define IT8783E_DEVID 0x8783 149 #define IT87_ACT_REG 0x30 150 #define IT87_BASE_REG 0x60 151 152 /* Logical device 7 registers (IT8712F and later) */ 153 #define IT87_SIO_GPIO1_REG 0x25 154 #define IT87_SIO_GPIO3_REG 0x27 155 #define IT87_SIO_GPIO5_REG 0x29 156 #define IT87_SIO_PINX1_REG 0x2a /* Pin selection */ 157 #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ 158 #define IT87_SIO_SPI_REG 0xef /* SPI function pin select */ 159 #define IT87_SIO_VID_REG 0xfc /* VID value */ 160 #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */ 161 162 /* Update battery voltage after every reading if true */ 163 static bool update_vbat; 164 165 /* Not all BIOSes properly configure the PWM registers */ 166 static bool fix_pwm_polarity; 167 168 /* Many IT87 constants specified below */ 169 170 /* Length of ISA address segment */ 171 #define IT87_EXTENT 8 172 173 /* Length of ISA address segment for Environmental Controller */ 174 #define IT87_EC_EXTENT 2 175 176 /* Offset of EC registers from ISA base address */ 177 #define IT87_EC_OFFSET 5 178 179 /* Where are the ISA address/data registers relative to the EC base address */ 180 #define IT87_ADDR_REG_OFFSET 0 181 #define IT87_DATA_REG_OFFSET 1 182 183 /*----- The IT87 registers -----*/ 184 185 #define IT87_REG_CONFIG 0x00 186 187 #define IT87_REG_ALARM1 0x01 188 #define IT87_REG_ALARM2 0x02 189 #define IT87_REG_ALARM3 0x03 190 191 /* 192 * The IT8718F and IT8720F have the VID value in a different register, in 193 * Super-I/O configuration space. 194 */ 195 #define IT87_REG_VID 0x0a 196 /* 197 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b 198 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer 199 * mode. 200 */ 201 #define IT87_REG_FAN_DIV 0x0b 202 #define IT87_REG_FAN_16BIT 0x0c 203 204 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ 205 206 static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; 207 static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; 208 static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; 209 static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; 210 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 }; 211 212 #define IT87_REG_FAN_MAIN_CTRL 0x13 213 #define IT87_REG_FAN_CTL 0x14 214 #define IT87_REG_PWM(nr) (0x15 + (nr)) 215 #define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8) 216 217 #define IT87_REG_VIN(nr) (0x20 + (nr)) 218 #define IT87_REG_TEMP(nr) (0x29 + (nr)) 219 220 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) 221 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) 222 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) 223 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) 224 225 #define IT87_REG_VIN_ENABLE 0x50 226 #define IT87_REG_TEMP_ENABLE 0x51 227 #define IT87_REG_TEMP_EXTRA 0x55 228 #define IT87_REG_BEEP_ENABLE 0x5c 229 230 #define IT87_REG_CHIPID 0x58 231 232 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i)) 233 #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i)) 234 235 struct it87_devices { 236 const char *name; 237 u16 features; 238 u8 peci_mask; 239 u8 old_peci_mask; 240 }; 241 242 #define FEAT_12MV_ADC (1 << 0) 243 #define FEAT_NEWER_AUTOPWM (1 << 1) 244 #define FEAT_OLD_AUTOPWM (1 << 2) 245 #define FEAT_16BIT_FANS (1 << 3) 246 #define FEAT_TEMP_OFFSET (1 << 4) 247 #define FEAT_TEMP_PECI (1 << 5) 248 #define FEAT_TEMP_OLD_PECI (1 << 6) 249 250 static const struct it87_devices it87_devices[] = { 251 [it87] = { 252 .name = "it87", 253 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */ 254 }, 255 [it8712] = { 256 .name = "it8712", 257 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */ 258 }, 259 [it8716] = { 260 .name = "it8716", 261 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET, 262 }, 263 [it8718] = { 264 .name = "it8718", 265 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 266 | FEAT_TEMP_OLD_PECI, 267 .old_peci_mask = 0x4, 268 }, 269 [it8720] = { 270 .name = "it8720", 271 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 272 | FEAT_TEMP_OLD_PECI, 273 .old_peci_mask = 0x4, 274 }, 275 [it8721] = { 276 .name = "it8721", 277 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 278 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI, 279 .peci_mask = 0x05, 280 .old_peci_mask = 0x02, /* Actually reports PCH */ 281 }, 282 [it8728] = { 283 .name = "it8728", 284 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 285 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, 286 .peci_mask = 0x07, 287 }, 288 [it8771] = { 289 .name = "it8771", 290 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 291 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, 292 /* PECI: guesswork */ 293 /* 12mV ADC (OHM) */ 294 /* 16 bit fans (OHM) */ 295 .peci_mask = 0x07, 296 }, 297 [it8772] = { 298 .name = "it8772", 299 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 300 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, 301 /* PECI (coreboot) */ 302 /* 12mV ADC (HWSensors4, OHM) */ 303 /* 16 bit fans (HWSensors4, OHM) */ 304 .peci_mask = 0x07, 305 }, 306 [it8782] = { 307 .name = "it8782", 308 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 309 | FEAT_TEMP_OLD_PECI, 310 .old_peci_mask = 0x4, 311 }, 312 [it8783] = { 313 .name = "it8783", 314 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 315 | FEAT_TEMP_OLD_PECI, 316 .old_peci_mask = 0x4, 317 }, 318 }; 319 320 #define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS) 321 #define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC) 322 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM) 323 #define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM) 324 #define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET) 325 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \ 326 ((data)->peci_mask & (1 << nr))) 327 #define has_temp_old_peci(data, nr) \ 328 (((data)->features & FEAT_TEMP_OLD_PECI) && \ 329 ((data)->old_peci_mask & (1 << nr))) 330 331 struct it87_sio_data { 332 enum chips type; 333 /* Values read from Super-I/O config space */ 334 u8 revision; 335 u8 vid_value; 336 u8 beep_pin; 337 u8 internal; /* Internal sensors can be labeled */ 338 /* Features skipped based on config or DMI */ 339 u16 skip_in; 340 u8 skip_vid; 341 u8 skip_fan; 342 u8 skip_pwm; 343 u8 skip_temp; 344 }; 345 346 /* 347 * For each registered chip, we need to keep some data in memory. 348 * The structure is dynamically allocated. 349 */ 350 struct it87_data { 351 struct device *hwmon_dev; 352 enum chips type; 353 u16 features; 354 u8 peci_mask; 355 u8 old_peci_mask; 356 357 unsigned short addr; 358 const char *name; 359 struct mutex update_lock; 360 char valid; /* !=0 if following fields are valid */ 361 unsigned long last_updated; /* In jiffies */ 362 363 u16 in_scaled; /* Internal voltage sensors are scaled */ 364 u8 in[9][3]; /* [nr][0]=in, [1]=min, [2]=max */ 365 u8 has_fan; /* Bitfield, fans enabled */ 366 u16 fan[5][2]; /* Register values, [nr][0]=fan, [1]=min */ 367 u8 has_temp; /* Bitfield, temp sensors enabled */ 368 s8 temp[3][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */ 369 u8 sensor; /* Register value (IT87_REG_TEMP_ENABLE) */ 370 u8 extra; /* Register value (IT87_REG_TEMP_EXTRA) */ 371 u8 fan_div[3]; /* Register encoding, shifted right */ 372 u8 vid; /* Register encoding, combined */ 373 u8 vrm; 374 u32 alarms; /* Register encoding, combined */ 375 u8 beeps; /* Register encoding */ 376 u8 fan_main_ctrl; /* Register value */ 377 u8 fan_ctl; /* Register value */ 378 379 /* 380 * The following 3 arrays correspond to the same registers up to 381 * the IT8720F. The meaning of bits 6-0 depends on the value of bit 382 * 7, and we want to preserve settings on mode changes, so we have 383 * to track all values separately. 384 * Starting with the IT8721F, the manual PWM duty cycles are stored 385 * in separate registers (8-bit values), so the separate tracking 386 * is no longer needed, but it is still done to keep the driver 387 * simple. 388 */ 389 u8 pwm_ctrl[3]; /* Register value */ 390 u8 pwm_duty[3]; /* Manual PWM value set by user */ 391 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */ 392 393 /* Automatic fan speed control registers */ 394 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */ 395 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */ 396 }; 397 398 static int adc_lsb(const struct it87_data *data, int nr) 399 { 400 int lsb = has_12mv_adc(data) ? 12 : 16; 401 if (data->in_scaled & (1 << nr)) 402 lsb <<= 1; 403 return lsb; 404 } 405 406 static u8 in_to_reg(const struct it87_data *data, int nr, long val) 407 { 408 val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr)); 409 return clamp_val(val, 0, 255); 410 } 411 412 static int in_from_reg(const struct it87_data *data, int nr, int val) 413 { 414 return val * adc_lsb(data, nr); 415 } 416 417 static inline u8 FAN_TO_REG(long rpm, int div) 418 { 419 if (rpm == 0) 420 return 255; 421 rpm = clamp_val(rpm, 1, 1000000); 422 return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); 423 } 424 425 static inline u16 FAN16_TO_REG(long rpm) 426 { 427 if (rpm == 0) 428 return 0xffff; 429 return clamp_val((1350000 + rpm) / (rpm * 2), 1, 0xfffe); 430 } 431 432 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \ 433 1350000 / ((val) * (div))) 434 /* The divider is fixed to 2 in 16-bit mode */ 435 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \ 436 1350000 / ((val) * 2)) 437 438 #define TEMP_TO_REG(val) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \ 439 ((val) + 500) / 1000), -128, 127)) 440 #define TEMP_FROM_REG(val) ((val) * 1000) 441 442 static u8 pwm_to_reg(const struct it87_data *data, long val) 443 { 444 if (has_newer_autopwm(data)) 445 return val; 446 else 447 return val >> 1; 448 } 449 450 static int pwm_from_reg(const struct it87_data *data, u8 reg) 451 { 452 if (has_newer_autopwm(data)) 453 return reg; 454 else 455 return (reg & 0x7f) << 1; 456 } 457 458 459 static int DIV_TO_REG(int val) 460 { 461 int answer = 0; 462 while (answer < 7 && (val >>= 1)) 463 answer++; 464 return answer; 465 } 466 #define DIV_FROM_REG(val) (1 << (val)) 467 468 static const unsigned int pwm_freq[8] = { 469 48000000 / 128, 470 24000000 / 128, 471 12000000 / 128, 472 8000000 / 128, 473 6000000 / 128, 474 3000000 / 128, 475 1500000 / 128, 476 750000 / 128, 477 }; 478 479 static int it87_probe(struct platform_device *pdev); 480 static int it87_remove(struct platform_device *pdev); 481 482 static int it87_read_value(struct it87_data *data, u8 reg); 483 static void it87_write_value(struct it87_data *data, u8 reg, u8 value); 484 static struct it87_data *it87_update_device(struct device *dev); 485 static int it87_check_pwm(struct device *dev); 486 static void it87_init_device(struct platform_device *pdev); 487 488 489 static struct platform_driver it87_driver = { 490 .driver = { 491 .owner = THIS_MODULE, 492 .name = DRVNAME, 493 }, 494 .probe = it87_probe, 495 .remove = it87_remove, 496 }; 497 498 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 499 char *buf) 500 { 501 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 502 int nr = sattr->nr; 503 int index = sattr->index; 504 505 struct it87_data *data = it87_update_device(dev); 506 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index])); 507 } 508 509 static ssize_t set_in(struct device *dev, struct device_attribute *attr, 510 const char *buf, size_t count) 511 { 512 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 513 int nr = sattr->nr; 514 int index = sattr->index; 515 516 struct it87_data *data = dev_get_drvdata(dev); 517 unsigned long val; 518 519 if (kstrtoul(buf, 10, &val) < 0) 520 return -EINVAL; 521 522 mutex_lock(&data->update_lock); 523 data->in[nr][index] = in_to_reg(data, nr, val); 524 it87_write_value(data, 525 index == 1 ? IT87_REG_VIN_MIN(nr) 526 : IT87_REG_VIN_MAX(nr), 527 data->in[nr][index]); 528 mutex_unlock(&data->update_lock); 529 return count; 530 } 531 532 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0); 533 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in, 534 0, 1); 535 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in, 536 0, 2); 537 538 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0); 539 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in, 540 1, 1); 541 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in, 542 1, 2); 543 544 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0); 545 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in, 546 2, 1); 547 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in, 548 2, 2); 549 550 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0); 551 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in, 552 3, 1); 553 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in, 554 3, 2); 555 556 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0); 557 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in, 558 4, 1); 559 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in, 560 4, 2); 561 562 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0); 563 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in, 564 5, 1); 565 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in, 566 5, 2); 567 568 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0); 569 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in, 570 6, 1); 571 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in, 572 6, 2); 573 574 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0); 575 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in, 576 7, 1); 577 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in, 578 7, 2); 579 580 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0); 581 582 /* 3 temperatures */ 583 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 584 char *buf) 585 { 586 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 587 int nr = sattr->nr; 588 int index = sattr->index; 589 struct it87_data *data = it87_update_device(dev); 590 591 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index])); 592 } 593 594 static ssize_t set_temp(struct device *dev, struct device_attribute *attr, 595 const char *buf, size_t count) 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 = dev_get_drvdata(dev); 601 long val; 602 u8 reg, regval; 603 604 if (kstrtol(buf, 10, &val) < 0) 605 return -EINVAL; 606 607 mutex_lock(&data->update_lock); 608 609 switch (index) { 610 default: 611 case 1: 612 reg = IT87_REG_TEMP_LOW(nr); 613 break; 614 case 2: 615 reg = IT87_REG_TEMP_HIGH(nr); 616 break; 617 case 3: 618 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE); 619 if (!(regval & 0x80)) { 620 regval |= 0x80; 621 it87_write_value(data, IT87_REG_BEEP_ENABLE, regval); 622 } 623 data->valid = 0; 624 reg = IT87_REG_TEMP_OFFSET[nr]; 625 break; 626 } 627 628 data->temp[nr][index] = TEMP_TO_REG(val); 629 it87_write_value(data, reg, data->temp[nr][index]); 630 mutex_unlock(&data->update_lock); 631 return count; 632 } 633 634 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0); 635 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 636 0, 1); 637 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 638 0, 2); 639 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp, 640 set_temp, 0, 3); 641 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0); 642 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 643 1, 1); 644 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 645 1, 2); 646 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp, 647 set_temp, 1, 3); 648 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0); 649 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 650 2, 1); 651 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 652 2, 2); 653 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp, 654 set_temp, 2, 3); 655 656 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr, 657 char *buf) 658 { 659 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 660 int nr = sensor_attr->index; 661 struct it87_data *data = it87_update_device(dev); 662 u8 reg = data->sensor; /* In case value is updated while used */ 663 u8 extra = data->extra; 664 665 if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) 666 || (has_temp_old_peci(data, nr) && (extra & 0x80))) 667 return sprintf(buf, "6\n"); /* Intel PECI */ 668 if (reg & (1 << nr)) 669 return sprintf(buf, "3\n"); /* thermal diode */ 670 if (reg & (8 << nr)) 671 return sprintf(buf, "4\n"); /* thermistor */ 672 return sprintf(buf, "0\n"); /* disabled */ 673 } 674 675 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr, 676 const char *buf, size_t count) 677 { 678 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 679 int nr = sensor_attr->index; 680 681 struct it87_data *data = dev_get_drvdata(dev); 682 long val; 683 u8 reg, extra; 684 685 if (kstrtol(buf, 10, &val) < 0) 686 return -EINVAL; 687 688 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); 689 reg &= ~(1 << nr); 690 reg &= ~(8 << nr); 691 if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6)) 692 reg &= 0x3f; 693 extra = it87_read_value(data, IT87_REG_TEMP_EXTRA); 694 if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6)) 695 extra &= 0x7f; 696 if (val == 2) { /* backwards compatibility */ 697 dev_warn(dev, 698 "Sensor type 2 is deprecated, please use 4 instead\n"); 699 val = 4; 700 } 701 /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */ 702 if (val == 3) 703 reg |= 1 << nr; 704 else if (val == 4) 705 reg |= 8 << nr; 706 else if (has_temp_peci(data, nr) && val == 6) 707 reg |= (nr + 1) << 6; 708 else if (has_temp_old_peci(data, nr) && val == 6) 709 extra |= 0x80; 710 else if (val != 0) 711 return -EINVAL; 712 713 mutex_lock(&data->update_lock); 714 data->sensor = reg; 715 data->extra = extra; 716 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); 717 if (has_temp_old_peci(data, nr)) 718 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra); 719 data->valid = 0; /* Force cache refresh */ 720 mutex_unlock(&data->update_lock); 721 return count; 722 } 723 724 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type, 725 set_temp_type, 0); 726 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type, 727 set_temp_type, 1); 728 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type, 729 set_temp_type, 2); 730 731 /* 3 Fans */ 732 733 static int pwm_mode(const struct it87_data *data, int nr) 734 { 735 int ctrl = data->fan_main_ctrl & (1 << nr); 736 737 if (ctrl == 0) /* Full speed */ 738 return 0; 739 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 740 return 2; 741 else /* Manual mode */ 742 return 1; 743 } 744 745 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 746 char *buf) 747 { 748 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 749 int nr = sattr->nr; 750 int index = sattr->index; 751 int speed; 752 struct it87_data *data = it87_update_device(dev); 753 754 speed = has_16bit_fans(data) ? 755 FAN16_FROM_REG(data->fan[nr][index]) : 756 FAN_FROM_REG(data->fan[nr][index], 757 DIV_FROM_REG(data->fan_div[nr])); 758 return sprintf(buf, "%d\n", speed); 759 } 760 761 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, 762 char *buf) 763 { 764 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 765 int nr = sensor_attr->index; 766 767 struct it87_data *data = it87_update_device(dev); 768 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); 769 } 770 static ssize_t show_pwm_enable(struct device *dev, 771 struct device_attribute *attr, char *buf) 772 { 773 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 774 int nr = sensor_attr->index; 775 776 struct it87_data *data = it87_update_device(dev); 777 return sprintf(buf, "%d\n", pwm_mode(data, nr)); 778 } 779 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 780 char *buf) 781 { 782 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 783 int nr = sensor_attr->index; 784 785 struct it87_data *data = it87_update_device(dev); 786 return sprintf(buf, "%d\n", 787 pwm_from_reg(data, data->pwm_duty[nr])); 788 } 789 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, 790 char *buf) 791 { 792 struct it87_data *data = it87_update_device(dev); 793 int index = (data->fan_ctl >> 4) & 0x07; 794 795 return sprintf(buf, "%u\n", pwm_freq[index]); 796 } 797 798 static ssize_t set_fan(struct device *dev, struct device_attribute *attr, 799 const char *buf, size_t count) 800 { 801 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 802 int nr = sattr->nr; 803 int index = sattr->index; 804 805 struct it87_data *data = dev_get_drvdata(dev); 806 long val; 807 u8 reg; 808 809 if (kstrtol(buf, 10, &val) < 0) 810 return -EINVAL; 811 812 mutex_lock(&data->update_lock); 813 814 if (has_16bit_fans(data)) { 815 data->fan[nr][index] = FAN16_TO_REG(val); 816 it87_write_value(data, IT87_REG_FAN_MIN[nr], 817 data->fan[nr][index] & 0xff); 818 it87_write_value(data, IT87_REG_FANX_MIN[nr], 819 data->fan[nr][index] >> 8); 820 } else { 821 reg = it87_read_value(data, IT87_REG_FAN_DIV); 822 switch (nr) { 823 case 0: 824 data->fan_div[nr] = reg & 0x07; 825 break; 826 case 1: 827 data->fan_div[nr] = (reg >> 3) & 0x07; 828 break; 829 case 2: 830 data->fan_div[nr] = (reg & 0x40) ? 3 : 1; 831 break; 832 } 833 data->fan[nr][index] = 834 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); 835 it87_write_value(data, IT87_REG_FAN_MIN[nr], 836 data->fan[nr][index]); 837 } 838 839 mutex_unlock(&data->update_lock); 840 return count; 841 } 842 843 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 844 const char *buf, size_t count) 845 { 846 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 847 int nr = sensor_attr->index; 848 849 struct it87_data *data = dev_get_drvdata(dev); 850 unsigned long val; 851 int min; 852 u8 old; 853 854 if (kstrtoul(buf, 10, &val) < 0) 855 return -EINVAL; 856 857 mutex_lock(&data->update_lock); 858 old = it87_read_value(data, IT87_REG_FAN_DIV); 859 860 /* Save fan min limit */ 861 min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr])); 862 863 switch (nr) { 864 case 0: 865 case 1: 866 data->fan_div[nr] = DIV_TO_REG(val); 867 break; 868 case 2: 869 if (val < 8) 870 data->fan_div[nr] = 1; 871 else 872 data->fan_div[nr] = 3; 873 } 874 val = old & 0x80; 875 val |= (data->fan_div[0] & 0x07); 876 val |= (data->fan_div[1] & 0x07) << 3; 877 if (data->fan_div[2] == 3) 878 val |= 0x1 << 6; 879 it87_write_value(data, IT87_REG_FAN_DIV, val); 880 881 /* Restore fan min limit */ 882 data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); 883 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]); 884 885 mutex_unlock(&data->update_lock); 886 return count; 887 } 888 889 /* Returns 0 if OK, -EINVAL otherwise */ 890 static int check_trip_points(struct device *dev, int nr) 891 { 892 const struct it87_data *data = dev_get_drvdata(dev); 893 int i, err = 0; 894 895 if (has_old_autopwm(data)) { 896 for (i = 0; i < 3; i++) { 897 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1]) 898 err = -EINVAL; 899 } 900 for (i = 0; i < 2; i++) { 901 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1]) 902 err = -EINVAL; 903 } 904 } 905 906 if (err) { 907 dev_err(dev, 908 "Inconsistent trip points, not switching to automatic mode\n"); 909 dev_err(dev, "Adjust the trip points and try again\n"); 910 } 911 return err; 912 } 913 914 static ssize_t set_pwm_enable(struct device *dev, 915 struct device_attribute *attr, const char *buf, size_t count) 916 { 917 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 918 int nr = sensor_attr->index; 919 920 struct it87_data *data = dev_get_drvdata(dev); 921 long val; 922 923 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2) 924 return -EINVAL; 925 926 /* Check trip points before switching to automatic mode */ 927 if (val == 2) { 928 if (check_trip_points(dev, nr) < 0) 929 return -EINVAL; 930 } 931 932 mutex_lock(&data->update_lock); 933 934 if (val == 0) { 935 int tmp; 936 /* make sure the fan is on when in on/off mode */ 937 tmp = it87_read_value(data, IT87_REG_FAN_CTL); 938 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); 939 /* set on/off mode */ 940 data->fan_main_ctrl &= ~(1 << nr); 941 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 942 data->fan_main_ctrl); 943 } else { 944 if (val == 1) /* Manual mode */ 945 data->pwm_ctrl[nr] = has_newer_autopwm(data) ? 946 data->pwm_temp_map[nr] : 947 data->pwm_duty[nr]; 948 else /* Automatic mode */ 949 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 950 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 951 /* set SmartGuardian mode */ 952 data->fan_main_ctrl |= (1 << nr); 953 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 954 data->fan_main_ctrl); 955 } 956 957 mutex_unlock(&data->update_lock); 958 return count; 959 } 960 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 961 const char *buf, size_t count) 962 { 963 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 964 int nr = sensor_attr->index; 965 966 struct it87_data *data = dev_get_drvdata(dev); 967 long val; 968 969 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) 970 return -EINVAL; 971 972 mutex_lock(&data->update_lock); 973 if (has_newer_autopwm(data)) { 974 /* 975 * If we are in automatic mode, the PWM duty cycle register 976 * is read-only so we can't write the value. 977 */ 978 if (data->pwm_ctrl[nr] & 0x80) { 979 mutex_unlock(&data->update_lock); 980 return -EBUSY; 981 } 982 data->pwm_duty[nr] = pwm_to_reg(data, val); 983 it87_write_value(data, IT87_REG_PWM_DUTY(nr), 984 data->pwm_duty[nr]); 985 } else { 986 data->pwm_duty[nr] = pwm_to_reg(data, val); 987 /* 988 * If we are in manual mode, write the duty cycle immediately; 989 * otherwise, just store it for later use. 990 */ 991 if (!(data->pwm_ctrl[nr] & 0x80)) { 992 data->pwm_ctrl[nr] = data->pwm_duty[nr]; 993 it87_write_value(data, IT87_REG_PWM(nr), 994 data->pwm_ctrl[nr]); 995 } 996 } 997 mutex_unlock(&data->update_lock); 998 return count; 999 } 1000 static ssize_t set_pwm_freq(struct device *dev, 1001 struct device_attribute *attr, const char *buf, size_t count) 1002 { 1003 struct it87_data *data = dev_get_drvdata(dev); 1004 unsigned long val; 1005 int i; 1006 1007 if (kstrtoul(buf, 10, &val) < 0) 1008 return -EINVAL; 1009 1010 /* Search for the nearest available frequency */ 1011 for (i = 0; i < 7; i++) { 1012 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) 1013 break; 1014 } 1015 1016 mutex_lock(&data->update_lock); 1017 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; 1018 data->fan_ctl |= i << 4; 1019 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); 1020 mutex_unlock(&data->update_lock); 1021 1022 return count; 1023 } 1024 static ssize_t show_pwm_temp_map(struct device *dev, 1025 struct device_attribute *attr, char *buf) 1026 { 1027 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1028 int nr = sensor_attr->index; 1029 1030 struct it87_data *data = it87_update_device(dev); 1031 int map; 1032 1033 if (data->pwm_temp_map[nr] < 3) 1034 map = 1 << data->pwm_temp_map[nr]; 1035 else 1036 map = 0; /* Should never happen */ 1037 return sprintf(buf, "%d\n", map); 1038 } 1039 static ssize_t set_pwm_temp_map(struct device *dev, 1040 struct device_attribute *attr, const char *buf, size_t count) 1041 { 1042 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1043 int nr = sensor_attr->index; 1044 1045 struct it87_data *data = dev_get_drvdata(dev); 1046 long val; 1047 u8 reg; 1048 1049 /* 1050 * This check can go away if we ever support automatic fan speed 1051 * control on newer chips. 1052 */ 1053 if (!has_old_autopwm(data)) { 1054 dev_notice(dev, "Mapping change disabled for safety reasons\n"); 1055 return -EINVAL; 1056 } 1057 1058 if (kstrtol(buf, 10, &val) < 0) 1059 return -EINVAL; 1060 1061 switch (val) { 1062 case (1 << 0): 1063 reg = 0x00; 1064 break; 1065 case (1 << 1): 1066 reg = 0x01; 1067 break; 1068 case (1 << 2): 1069 reg = 0x02; 1070 break; 1071 default: 1072 return -EINVAL; 1073 } 1074 1075 mutex_lock(&data->update_lock); 1076 data->pwm_temp_map[nr] = reg; 1077 /* 1078 * If we are in automatic mode, write the temp mapping immediately; 1079 * otherwise, just store it for later use. 1080 */ 1081 if (data->pwm_ctrl[nr] & 0x80) { 1082 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 1083 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 1084 } 1085 mutex_unlock(&data->update_lock); 1086 return count; 1087 } 1088 1089 static ssize_t show_auto_pwm(struct device *dev, 1090 struct device_attribute *attr, char *buf) 1091 { 1092 struct it87_data *data = it87_update_device(dev); 1093 struct sensor_device_attribute_2 *sensor_attr = 1094 to_sensor_dev_attr_2(attr); 1095 int nr = sensor_attr->nr; 1096 int point = sensor_attr->index; 1097 1098 return sprintf(buf, "%d\n", 1099 pwm_from_reg(data, data->auto_pwm[nr][point])); 1100 } 1101 1102 static ssize_t set_auto_pwm(struct device *dev, 1103 struct device_attribute *attr, const char *buf, size_t count) 1104 { 1105 struct it87_data *data = dev_get_drvdata(dev); 1106 struct sensor_device_attribute_2 *sensor_attr = 1107 to_sensor_dev_attr_2(attr); 1108 int nr = sensor_attr->nr; 1109 int point = sensor_attr->index; 1110 long val; 1111 1112 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) 1113 return -EINVAL; 1114 1115 mutex_lock(&data->update_lock); 1116 data->auto_pwm[nr][point] = pwm_to_reg(data, val); 1117 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point), 1118 data->auto_pwm[nr][point]); 1119 mutex_unlock(&data->update_lock); 1120 return count; 1121 } 1122 1123 static ssize_t show_auto_temp(struct device *dev, 1124 struct device_attribute *attr, char *buf) 1125 { 1126 struct it87_data *data = it87_update_device(dev); 1127 struct sensor_device_attribute_2 *sensor_attr = 1128 to_sensor_dev_attr_2(attr); 1129 int nr = sensor_attr->nr; 1130 int point = sensor_attr->index; 1131 1132 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point])); 1133 } 1134 1135 static ssize_t set_auto_temp(struct device *dev, 1136 struct device_attribute *attr, const char *buf, size_t count) 1137 { 1138 struct it87_data *data = dev_get_drvdata(dev); 1139 struct sensor_device_attribute_2 *sensor_attr = 1140 to_sensor_dev_attr_2(attr); 1141 int nr = sensor_attr->nr; 1142 int point = sensor_attr->index; 1143 long val; 1144 1145 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000) 1146 return -EINVAL; 1147 1148 mutex_lock(&data->update_lock); 1149 data->auto_temp[nr][point] = TEMP_TO_REG(val); 1150 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), 1151 data->auto_temp[nr][point]); 1152 mutex_unlock(&data->update_lock); 1153 return count; 1154 } 1155 1156 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0); 1157 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1158 0, 1); 1159 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div, 1160 set_fan_div, 0); 1161 1162 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0); 1163 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1164 1, 1); 1165 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div, 1166 set_fan_div, 1); 1167 1168 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0); 1169 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1170 2, 1); 1171 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div, 1172 set_fan_div, 2); 1173 1174 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0); 1175 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1176 3, 1); 1177 1178 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0); 1179 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1180 4, 1); 1181 1182 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, 1183 show_pwm_enable, set_pwm_enable, 0); 1184 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0); 1185 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq); 1186 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR, 1187 show_pwm_temp_map, set_pwm_temp_map, 0); 1188 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, 1189 show_auto_pwm, set_auto_pwm, 0, 0); 1190 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, 1191 show_auto_pwm, set_auto_pwm, 0, 1); 1192 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR, 1193 show_auto_pwm, set_auto_pwm, 0, 2); 1194 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO, 1195 show_auto_pwm, NULL, 0, 3); 1196 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR, 1197 show_auto_temp, set_auto_temp, 0, 1); 1198 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, 1199 show_auto_temp, set_auto_temp, 0, 0); 1200 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR, 1201 show_auto_temp, set_auto_temp, 0, 2); 1202 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR, 1203 show_auto_temp, set_auto_temp, 0, 3); 1204 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR, 1205 show_auto_temp, set_auto_temp, 0, 4); 1206 1207 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, 1208 show_pwm_enable, set_pwm_enable, 1); 1209 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1); 1210 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL); 1211 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR, 1212 show_pwm_temp_map, set_pwm_temp_map, 1); 1213 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, 1214 show_auto_pwm, set_auto_pwm, 1, 0); 1215 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, 1216 show_auto_pwm, set_auto_pwm, 1, 1); 1217 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR, 1218 show_auto_pwm, set_auto_pwm, 1, 2); 1219 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO, 1220 show_auto_pwm, NULL, 1, 3); 1221 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR, 1222 show_auto_temp, set_auto_temp, 1, 1); 1223 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, 1224 show_auto_temp, set_auto_temp, 1, 0); 1225 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR, 1226 show_auto_temp, set_auto_temp, 1, 2); 1227 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR, 1228 show_auto_temp, set_auto_temp, 1, 3); 1229 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR, 1230 show_auto_temp, set_auto_temp, 1, 4); 1231 1232 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, 1233 show_pwm_enable, set_pwm_enable, 2); 1234 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2); 1235 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL); 1236 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR, 1237 show_pwm_temp_map, set_pwm_temp_map, 2); 1238 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, 1239 show_auto_pwm, set_auto_pwm, 2, 0); 1240 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, 1241 show_auto_pwm, set_auto_pwm, 2, 1); 1242 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR, 1243 show_auto_pwm, set_auto_pwm, 2, 2); 1244 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO, 1245 show_auto_pwm, NULL, 2, 3); 1246 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR, 1247 show_auto_temp, set_auto_temp, 2, 1); 1248 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, 1249 show_auto_temp, set_auto_temp, 2, 0); 1250 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR, 1251 show_auto_temp, set_auto_temp, 2, 2); 1252 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR, 1253 show_auto_temp, set_auto_temp, 2, 3); 1254 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR, 1255 show_auto_temp, set_auto_temp, 2, 4); 1256 1257 /* Alarms */ 1258 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, 1259 char *buf) 1260 { 1261 struct it87_data *data = it87_update_device(dev); 1262 return sprintf(buf, "%u\n", data->alarms); 1263 } 1264 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 1265 1266 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 1267 char *buf) 1268 { 1269 int bitnr = to_sensor_dev_attr(attr)->index; 1270 struct it87_data *data = it87_update_device(dev); 1271 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 1272 } 1273 1274 static ssize_t clear_intrusion(struct device *dev, struct device_attribute 1275 *attr, const char *buf, size_t count) 1276 { 1277 struct it87_data *data = dev_get_drvdata(dev); 1278 long val; 1279 int config; 1280 1281 if (kstrtol(buf, 10, &val) < 0 || val != 0) 1282 return -EINVAL; 1283 1284 mutex_lock(&data->update_lock); 1285 config = it87_read_value(data, IT87_REG_CONFIG); 1286 if (config < 0) { 1287 count = config; 1288 } else { 1289 config |= 1 << 5; 1290 it87_write_value(data, IT87_REG_CONFIG, config); 1291 /* Invalidate cache to force re-read */ 1292 data->valid = 0; 1293 } 1294 mutex_unlock(&data->update_lock); 1295 1296 return count; 1297 } 1298 1299 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); 1300 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); 1301 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); 1302 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11); 1303 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12); 1304 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13); 1305 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14); 1306 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15); 1307 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0); 1308 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1); 1309 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2); 1310 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3); 1311 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); 1312 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); 1313 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); 1314 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); 1315 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR, 1316 show_alarm, clear_intrusion, 4); 1317 1318 static ssize_t show_beep(struct device *dev, struct device_attribute *attr, 1319 char *buf) 1320 { 1321 int bitnr = to_sensor_dev_attr(attr)->index; 1322 struct it87_data *data = it87_update_device(dev); 1323 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1); 1324 } 1325 static ssize_t set_beep(struct device *dev, struct device_attribute *attr, 1326 const char *buf, size_t count) 1327 { 1328 int bitnr = to_sensor_dev_attr(attr)->index; 1329 struct it87_data *data = dev_get_drvdata(dev); 1330 long val; 1331 1332 if (kstrtol(buf, 10, &val) < 0 1333 || (val != 0 && val != 1)) 1334 return -EINVAL; 1335 1336 mutex_lock(&data->update_lock); 1337 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 1338 if (val) 1339 data->beeps |= (1 << bitnr); 1340 else 1341 data->beeps &= ~(1 << bitnr); 1342 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps); 1343 mutex_unlock(&data->update_lock); 1344 return count; 1345 } 1346 1347 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, 1348 show_beep, set_beep, 1); 1349 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1); 1350 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1); 1351 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1); 1352 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1); 1353 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1); 1354 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1); 1355 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1); 1356 /* fanX_beep writability is set later */ 1357 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0); 1358 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0); 1359 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0); 1360 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0); 1361 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0); 1362 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, 1363 show_beep, set_beep, 2); 1364 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2); 1365 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2); 1366 1367 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, 1368 char *buf) 1369 { 1370 struct it87_data *data = dev_get_drvdata(dev); 1371 return sprintf(buf, "%u\n", data->vrm); 1372 } 1373 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, 1374 const char *buf, size_t count) 1375 { 1376 struct it87_data *data = dev_get_drvdata(dev); 1377 unsigned long val; 1378 1379 if (kstrtoul(buf, 10, &val) < 0) 1380 return -EINVAL; 1381 1382 data->vrm = val; 1383 1384 return count; 1385 } 1386 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 1387 1388 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, 1389 char *buf) 1390 { 1391 struct it87_data *data = it87_update_device(dev); 1392 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); 1393 } 1394 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 1395 1396 static ssize_t show_label(struct device *dev, struct device_attribute *attr, 1397 char *buf) 1398 { 1399 static const char * const labels[] = { 1400 "+5V", 1401 "5VSB", 1402 "Vbat", 1403 }; 1404 static const char * const labels_it8721[] = { 1405 "+3.3V", 1406 "3VSB", 1407 "Vbat", 1408 }; 1409 struct it87_data *data = dev_get_drvdata(dev); 1410 int nr = to_sensor_dev_attr(attr)->index; 1411 1412 return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr] 1413 : labels[nr]); 1414 } 1415 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0); 1416 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1); 1417 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2); 1418 1419 static ssize_t show_name(struct device *dev, struct device_attribute 1420 *devattr, char *buf) 1421 { 1422 struct it87_data *data = dev_get_drvdata(dev); 1423 return sprintf(buf, "%s\n", data->name); 1424 } 1425 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); 1426 1427 static struct attribute *it87_attributes_in[9][5] = { 1428 { 1429 &sensor_dev_attr_in0_input.dev_attr.attr, 1430 &sensor_dev_attr_in0_min.dev_attr.attr, 1431 &sensor_dev_attr_in0_max.dev_attr.attr, 1432 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1433 NULL 1434 }, { 1435 &sensor_dev_attr_in1_input.dev_attr.attr, 1436 &sensor_dev_attr_in1_min.dev_attr.attr, 1437 &sensor_dev_attr_in1_max.dev_attr.attr, 1438 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1439 NULL 1440 }, { 1441 &sensor_dev_attr_in2_input.dev_attr.attr, 1442 &sensor_dev_attr_in2_min.dev_attr.attr, 1443 &sensor_dev_attr_in2_max.dev_attr.attr, 1444 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1445 NULL 1446 }, { 1447 &sensor_dev_attr_in3_input.dev_attr.attr, 1448 &sensor_dev_attr_in3_min.dev_attr.attr, 1449 &sensor_dev_attr_in3_max.dev_attr.attr, 1450 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1451 NULL 1452 }, { 1453 &sensor_dev_attr_in4_input.dev_attr.attr, 1454 &sensor_dev_attr_in4_min.dev_attr.attr, 1455 &sensor_dev_attr_in4_max.dev_attr.attr, 1456 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1457 NULL 1458 }, { 1459 &sensor_dev_attr_in5_input.dev_attr.attr, 1460 &sensor_dev_attr_in5_min.dev_attr.attr, 1461 &sensor_dev_attr_in5_max.dev_attr.attr, 1462 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1463 NULL 1464 }, { 1465 &sensor_dev_attr_in6_input.dev_attr.attr, 1466 &sensor_dev_attr_in6_min.dev_attr.attr, 1467 &sensor_dev_attr_in6_max.dev_attr.attr, 1468 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1469 NULL 1470 }, { 1471 &sensor_dev_attr_in7_input.dev_attr.attr, 1472 &sensor_dev_attr_in7_min.dev_attr.attr, 1473 &sensor_dev_attr_in7_max.dev_attr.attr, 1474 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1475 NULL 1476 }, { 1477 &sensor_dev_attr_in8_input.dev_attr.attr, 1478 NULL 1479 } }; 1480 1481 static const struct attribute_group it87_group_in[9] = { 1482 { .attrs = it87_attributes_in[0] }, 1483 { .attrs = it87_attributes_in[1] }, 1484 { .attrs = it87_attributes_in[2] }, 1485 { .attrs = it87_attributes_in[3] }, 1486 { .attrs = it87_attributes_in[4] }, 1487 { .attrs = it87_attributes_in[5] }, 1488 { .attrs = it87_attributes_in[6] }, 1489 { .attrs = it87_attributes_in[7] }, 1490 { .attrs = it87_attributes_in[8] }, 1491 }; 1492 1493 static struct attribute *it87_attributes_temp[3][6] = { 1494 { 1495 &sensor_dev_attr_temp1_input.dev_attr.attr, 1496 &sensor_dev_attr_temp1_max.dev_attr.attr, 1497 &sensor_dev_attr_temp1_min.dev_attr.attr, 1498 &sensor_dev_attr_temp1_type.dev_attr.attr, 1499 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1500 NULL 1501 } , { 1502 &sensor_dev_attr_temp2_input.dev_attr.attr, 1503 &sensor_dev_attr_temp2_max.dev_attr.attr, 1504 &sensor_dev_attr_temp2_min.dev_attr.attr, 1505 &sensor_dev_attr_temp2_type.dev_attr.attr, 1506 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1507 NULL 1508 } , { 1509 &sensor_dev_attr_temp3_input.dev_attr.attr, 1510 &sensor_dev_attr_temp3_max.dev_attr.attr, 1511 &sensor_dev_attr_temp3_min.dev_attr.attr, 1512 &sensor_dev_attr_temp3_type.dev_attr.attr, 1513 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1514 NULL 1515 } }; 1516 1517 static const struct attribute_group it87_group_temp[3] = { 1518 { .attrs = it87_attributes_temp[0] }, 1519 { .attrs = it87_attributes_temp[1] }, 1520 { .attrs = it87_attributes_temp[2] }, 1521 }; 1522 1523 static struct attribute *it87_attributes_temp_offset[] = { 1524 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1525 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1526 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1527 }; 1528 1529 static struct attribute *it87_attributes[] = { 1530 &dev_attr_alarms.attr, 1531 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr, 1532 &dev_attr_name.attr, 1533 NULL 1534 }; 1535 1536 static const struct attribute_group it87_group = { 1537 .attrs = it87_attributes, 1538 }; 1539 1540 static struct attribute *it87_attributes_in_beep[] = { 1541 &sensor_dev_attr_in0_beep.dev_attr.attr, 1542 &sensor_dev_attr_in1_beep.dev_attr.attr, 1543 &sensor_dev_attr_in2_beep.dev_attr.attr, 1544 &sensor_dev_attr_in3_beep.dev_attr.attr, 1545 &sensor_dev_attr_in4_beep.dev_attr.attr, 1546 &sensor_dev_attr_in5_beep.dev_attr.attr, 1547 &sensor_dev_attr_in6_beep.dev_attr.attr, 1548 &sensor_dev_attr_in7_beep.dev_attr.attr, 1549 NULL 1550 }; 1551 1552 static struct attribute *it87_attributes_temp_beep[] = { 1553 &sensor_dev_attr_temp1_beep.dev_attr.attr, 1554 &sensor_dev_attr_temp2_beep.dev_attr.attr, 1555 &sensor_dev_attr_temp3_beep.dev_attr.attr, 1556 }; 1557 1558 static struct attribute *it87_attributes_fan[5][3+1] = { { 1559 &sensor_dev_attr_fan1_input.dev_attr.attr, 1560 &sensor_dev_attr_fan1_min.dev_attr.attr, 1561 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1562 NULL 1563 }, { 1564 &sensor_dev_attr_fan2_input.dev_attr.attr, 1565 &sensor_dev_attr_fan2_min.dev_attr.attr, 1566 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1567 NULL 1568 }, { 1569 &sensor_dev_attr_fan3_input.dev_attr.attr, 1570 &sensor_dev_attr_fan3_min.dev_attr.attr, 1571 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1572 NULL 1573 }, { 1574 &sensor_dev_attr_fan4_input.dev_attr.attr, 1575 &sensor_dev_attr_fan4_min.dev_attr.attr, 1576 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1577 NULL 1578 }, { 1579 &sensor_dev_attr_fan5_input.dev_attr.attr, 1580 &sensor_dev_attr_fan5_min.dev_attr.attr, 1581 &sensor_dev_attr_fan5_alarm.dev_attr.attr, 1582 NULL 1583 } }; 1584 1585 static const struct attribute_group it87_group_fan[5] = { 1586 { .attrs = it87_attributes_fan[0] }, 1587 { .attrs = it87_attributes_fan[1] }, 1588 { .attrs = it87_attributes_fan[2] }, 1589 { .attrs = it87_attributes_fan[3] }, 1590 { .attrs = it87_attributes_fan[4] }, 1591 }; 1592 1593 static const struct attribute *it87_attributes_fan_div[] = { 1594 &sensor_dev_attr_fan1_div.dev_attr.attr, 1595 &sensor_dev_attr_fan2_div.dev_attr.attr, 1596 &sensor_dev_attr_fan3_div.dev_attr.attr, 1597 }; 1598 1599 static struct attribute *it87_attributes_pwm[3][4+1] = { { 1600 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1601 &sensor_dev_attr_pwm1.dev_attr.attr, 1602 &dev_attr_pwm1_freq.attr, 1603 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1604 NULL 1605 }, { 1606 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1607 &sensor_dev_attr_pwm2.dev_attr.attr, 1608 &dev_attr_pwm2_freq.attr, 1609 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1610 NULL 1611 }, { 1612 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1613 &sensor_dev_attr_pwm3.dev_attr.attr, 1614 &dev_attr_pwm3_freq.attr, 1615 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1616 NULL 1617 } }; 1618 1619 static const struct attribute_group it87_group_pwm[3] = { 1620 { .attrs = it87_attributes_pwm[0] }, 1621 { .attrs = it87_attributes_pwm[1] }, 1622 { .attrs = it87_attributes_pwm[2] }, 1623 }; 1624 1625 static struct attribute *it87_attributes_autopwm[3][9+1] = { { 1626 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1627 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1628 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, 1629 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, 1630 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, 1631 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, 1632 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, 1633 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, 1634 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, 1635 NULL 1636 }, { 1637 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1638 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1639 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, 1640 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, 1641 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, 1642 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr, 1643 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, 1644 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, 1645 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, 1646 NULL 1647 }, { 1648 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1649 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1650 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr, 1651 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr, 1652 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, 1653 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr, 1654 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, 1655 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr, 1656 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr, 1657 NULL 1658 } }; 1659 1660 static const struct attribute_group it87_group_autopwm[3] = { 1661 { .attrs = it87_attributes_autopwm[0] }, 1662 { .attrs = it87_attributes_autopwm[1] }, 1663 { .attrs = it87_attributes_autopwm[2] }, 1664 }; 1665 1666 static struct attribute *it87_attributes_fan_beep[] = { 1667 &sensor_dev_attr_fan1_beep.dev_attr.attr, 1668 &sensor_dev_attr_fan2_beep.dev_attr.attr, 1669 &sensor_dev_attr_fan3_beep.dev_attr.attr, 1670 &sensor_dev_attr_fan4_beep.dev_attr.attr, 1671 &sensor_dev_attr_fan5_beep.dev_attr.attr, 1672 }; 1673 1674 static struct attribute *it87_attributes_vid[] = { 1675 &dev_attr_vrm.attr, 1676 &dev_attr_cpu0_vid.attr, 1677 NULL 1678 }; 1679 1680 static const struct attribute_group it87_group_vid = { 1681 .attrs = it87_attributes_vid, 1682 }; 1683 1684 static struct attribute *it87_attributes_label[] = { 1685 &sensor_dev_attr_in3_label.dev_attr.attr, 1686 &sensor_dev_attr_in7_label.dev_attr.attr, 1687 &sensor_dev_attr_in8_label.dev_attr.attr, 1688 NULL 1689 }; 1690 1691 static const struct attribute_group it87_group_label = { 1692 .attrs = it87_attributes_label, 1693 }; 1694 1695 /* SuperIO detection - will change isa_address if a chip is found */ 1696 static int __init it87_find(unsigned short *address, 1697 struct it87_sio_data *sio_data) 1698 { 1699 int err; 1700 u16 chip_type; 1701 const char *board_vendor, *board_name; 1702 1703 err = superio_enter(); 1704 if (err) 1705 return err; 1706 1707 err = -ENODEV; 1708 chip_type = force_id ? force_id : superio_inw(DEVID); 1709 1710 switch (chip_type) { 1711 case IT8705F_DEVID: 1712 sio_data->type = it87; 1713 break; 1714 case IT8712F_DEVID: 1715 sio_data->type = it8712; 1716 break; 1717 case IT8716F_DEVID: 1718 case IT8726F_DEVID: 1719 sio_data->type = it8716; 1720 break; 1721 case IT8718F_DEVID: 1722 sio_data->type = it8718; 1723 break; 1724 case IT8720F_DEVID: 1725 sio_data->type = it8720; 1726 break; 1727 case IT8721F_DEVID: 1728 sio_data->type = it8721; 1729 break; 1730 case IT8728F_DEVID: 1731 sio_data->type = it8728; 1732 break; 1733 case IT8771E_DEVID: 1734 sio_data->type = it8771; 1735 break; 1736 case IT8772E_DEVID: 1737 sio_data->type = it8772; 1738 break; 1739 case IT8782F_DEVID: 1740 sio_data->type = it8782; 1741 break; 1742 case IT8783E_DEVID: 1743 sio_data->type = it8783; 1744 break; 1745 case 0xffff: /* No device at all */ 1746 goto exit; 1747 default: 1748 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type); 1749 goto exit; 1750 } 1751 1752 superio_select(PME); 1753 if (!(superio_inb(IT87_ACT_REG) & 0x01)) { 1754 pr_info("Device not activated, skipping\n"); 1755 goto exit; 1756 } 1757 1758 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); 1759 if (*address == 0) { 1760 pr_info("Base address not set, skipping\n"); 1761 goto exit; 1762 } 1763 1764 err = 0; 1765 sio_data->revision = superio_inb(DEVREV) & 0x0f; 1766 pr_info("Found IT%04xF chip at 0x%x, revision %d\n", 1767 chip_type, *address, sio_data->revision); 1768 1769 /* in8 (Vbat) is always internal */ 1770 sio_data->internal = (1 << 2); 1771 1772 /* Read GPIO config and VID value from LDN 7 (GPIO) */ 1773 if (sio_data->type == it87) { 1774 /* The IT8705F doesn't have VID pins at all */ 1775 sio_data->skip_vid = 1; 1776 1777 /* The IT8705F has a different LD number for GPIO */ 1778 superio_select(5); 1779 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1780 } else if (sio_data->type == it8783) { 1781 int reg25, reg27, reg2a, reg2c, regef; 1782 1783 sio_data->skip_vid = 1; /* No VID */ 1784 1785 superio_select(GPIO); 1786 1787 reg25 = superio_inb(IT87_SIO_GPIO1_REG); 1788 reg27 = superio_inb(IT87_SIO_GPIO3_REG); 1789 reg2a = superio_inb(IT87_SIO_PINX1_REG); 1790 reg2c = superio_inb(IT87_SIO_PINX2_REG); 1791 regef = superio_inb(IT87_SIO_SPI_REG); 1792 1793 /* Check if fan3 is there or not */ 1794 if ((reg27 & (1 << 0)) || !(reg2c & (1 << 2))) 1795 sio_data->skip_fan |= (1 << 2); 1796 if ((reg25 & (1 << 4)) 1797 || (!(reg2a & (1 << 1)) && (regef & (1 << 0)))) 1798 sio_data->skip_pwm |= (1 << 2); 1799 1800 /* Check if fan2 is there or not */ 1801 if (reg27 & (1 << 7)) 1802 sio_data->skip_fan |= (1 << 1); 1803 if (reg27 & (1 << 3)) 1804 sio_data->skip_pwm |= (1 << 1); 1805 1806 /* VIN5 */ 1807 if ((reg27 & (1 << 0)) || (reg2c & (1 << 2))) 1808 sio_data->skip_in |= (1 << 5); /* No VIN5 */ 1809 1810 /* VIN6 */ 1811 if (reg27 & (1 << 1)) 1812 sio_data->skip_in |= (1 << 6); /* No VIN6 */ 1813 1814 /* 1815 * VIN7 1816 * Does not depend on bit 2 of Reg2C, contrary to datasheet. 1817 */ 1818 if (reg27 & (1 << 2)) { 1819 /* 1820 * The data sheet is a bit unclear regarding the 1821 * internal voltage divider for VCCH5V. It says 1822 * "This bit enables and switches VIN7 (pin 91) to the 1823 * internal voltage divider for VCCH5V". 1824 * This is different to other chips, where the internal 1825 * voltage divider would connect VIN7 to an internal 1826 * voltage source. Maybe that is the case here as well. 1827 * 1828 * Since we don't know for sure, re-route it if that is 1829 * not the case, and ask the user to report if the 1830 * resulting voltage is sane. 1831 */ 1832 if (!(reg2c & (1 << 1))) { 1833 reg2c |= (1 << 1); 1834 superio_outb(IT87_SIO_PINX2_REG, reg2c); 1835 pr_notice("Routing internal VCCH5V to in7.\n"); 1836 } 1837 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n"); 1838 pr_notice("Please report if it displays a reasonable voltage.\n"); 1839 } 1840 1841 if (reg2c & (1 << 0)) 1842 sio_data->internal |= (1 << 0); 1843 if (reg2c & (1 << 1)) 1844 sio_data->internal |= (1 << 1); 1845 1846 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1847 1848 } else { 1849 int reg; 1850 bool uart6; 1851 1852 superio_select(GPIO); 1853 1854 reg = superio_inb(IT87_SIO_GPIO3_REG); 1855 if (sio_data->type == it8721 || sio_data->type == it8728 || 1856 sio_data->type == it8771 || sio_data->type == it8772 || 1857 sio_data->type == it8782) { 1858 /* 1859 * IT8721F/IT8758E, and IT8782F don't have VID pins 1860 * at all, not sure about the IT8728F and compatibles. 1861 */ 1862 sio_data->skip_vid = 1; 1863 } else { 1864 /* We need at least 4 VID pins */ 1865 if (reg & 0x0f) { 1866 pr_info("VID is disabled (pins used for GPIO)\n"); 1867 sio_data->skip_vid = 1; 1868 } 1869 } 1870 1871 /* Check if fan3 is there or not */ 1872 if (reg & (1 << 6)) 1873 sio_data->skip_pwm |= (1 << 2); 1874 if (reg & (1 << 7)) 1875 sio_data->skip_fan |= (1 << 2); 1876 1877 /* Check if fan2 is there or not */ 1878 reg = superio_inb(IT87_SIO_GPIO5_REG); 1879 if (reg & (1 << 1)) 1880 sio_data->skip_pwm |= (1 << 1); 1881 if (reg & (1 << 2)) 1882 sio_data->skip_fan |= (1 << 1); 1883 1884 if ((sio_data->type == it8718 || sio_data->type == it8720) 1885 && !(sio_data->skip_vid)) 1886 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); 1887 1888 reg = superio_inb(IT87_SIO_PINX2_REG); 1889 1890 uart6 = sio_data->type == it8782 && (reg & (1 << 2)); 1891 1892 /* 1893 * The IT8720F has no VIN7 pin, so VCCH should always be 1894 * routed internally to VIN7 with an internal divider. 1895 * Curiously, there still is a configuration bit to control 1896 * this, which means it can be set incorrectly. And even 1897 * more curiously, many boards out there are improperly 1898 * configured, even though the IT8720F datasheet claims 1899 * that the internal routing of VCCH to VIN7 is the default 1900 * setting. So we force the internal routing in this case. 1901 * 1902 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins. 1903 * If UART6 is enabled, re-route VIN7 to the internal divider 1904 * if that is not already the case. 1905 */ 1906 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) { 1907 reg |= (1 << 1); 1908 superio_outb(IT87_SIO_PINX2_REG, reg); 1909 pr_notice("Routing internal VCCH to in7\n"); 1910 } 1911 if (reg & (1 << 0)) 1912 sio_data->internal |= (1 << 0); 1913 if ((reg & (1 << 1)) || sio_data->type == it8721 || 1914 sio_data->type == it8728 || 1915 sio_data->type == it8771 || 1916 sio_data->type == it8772) 1917 sio_data->internal |= (1 << 1); 1918 1919 /* 1920 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7. 1921 * While VIN7 can be routed to the internal voltage divider, 1922 * VIN5 and VIN6 are not available if UART6 is enabled. 1923 * 1924 * Also, temp3 is not available if UART6 is enabled and TEMPIN3 1925 * is the temperature source. Since we can not read the 1926 * temperature source here, skip_temp is preliminary. 1927 */ 1928 if (uart6) { 1929 sio_data->skip_in |= (1 << 5) | (1 << 6); 1930 sio_data->skip_temp |= (1 << 2); 1931 } 1932 1933 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1934 } 1935 if (sio_data->beep_pin) 1936 pr_info("Beeping is supported\n"); 1937 1938 /* Disable specific features based on DMI strings */ 1939 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); 1940 board_name = dmi_get_system_info(DMI_BOARD_NAME); 1941 if (board_vendor && board_name) { 1942 if (strcmp(board_vendor, "nVIDIA") == 0 1943 && strcmp(board_name, "FN68PT") == 0) { 1944 /* 1945 * On the Shuttle SN68PT, FAN_CTL2 is apparently not 1946 * connected to a fan, but to something else. One user 1947 * has reported instant system power-off when changing 1948 * the PWM2 duty cycle, so we disable it. 1949 * I use the board name string as the trigger in case 1950 * the same board is ever used in other systems. 1951 */ 1952 pr_info("Disabling pwm2 due to hardware constraints\n"); 1953 sio_data->skip_pwm = (1 << 1); 1954 } 1955 } 1956 1957 exit: 1958 superio_exit(); 1959 return err; 1960 } 1961 1962 static void it87_remove_files(struct device *dev) 1963 { 1964 struct it87_data *data = platform_get_drvdata(pdev); 1965 struct it87_sio_data *sio_data = dev->platform_data; 1966 int i; 1967 1968 sysfs_remove_group(&dev->kobj, &it87_group); 1969 for (i = 0; i < 9; i++) { 1970 if (sio_data->skip_in & (1 << i)) 1971 continue; 1972 sysfs_remove_group(&dev->kobj, &it87_group_in[i]); 1973 if (it87_attributes_in_beep[i]) 1974 sysfs_remove_file(&dev->kobj, 1975 it87_attributes_in_beep[i]); 1976 } 1977 for (i = 0; i < 3; i++) { 1978 if (!(data->has_temp & (1 << i))) 1979 continue; 1980 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]); 1981 if (has_temp_offset(data)) 1982 sysfs_remove_file(&dev->kobj, 1983 it87_attributes_temp_offset[i]); 1984 if (sio_data->beep_pin) 1985 sysfs_remove_file(&dev->kobj, 1986 it87_attributes_temp_beep[i]); 1987 } 1988 for (i = 0; i < 5; i++) { 1989 if (!(data->has_fan & (1 << i))) 1990 continue; 1991 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]); 1992 if (sio_data->beep_pin) 1993 sysfs_remove_file(&dev->kobj, 1994 it87_attributes_fan_beep[i]); 1995 if (i < 3 && !has_16bit_fans(data)) 1996 sysfs_remove_file(&dev->kobj, 1997 it87_attributes_fan_div[i]); 1998 } 1999 for (i = 0; i < 3; i++) { 2000 if (sio_data->skip_pwm & (1 << 0)) 2001 continue; 2002 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]); 2003 if (has_old_autopwm(data)) 2004 sysfs_remove_group(&dev->kobj, 2005 &it87_group_autopwm[i]); 2006 } 2007 if (!sio_data->skip_vid) 2008 sysfs_remove_group(&dev->kobj, &it87_group_vid); 2009 sysfs_remove_group(&dev->kobj, &it87_group_label); 2010 } 2011 2012 static int it87_probe(struct platform_device *pdev) 2013 { 2014 struct it87_data *data; 2015 struct resource *res; 2016 struct device *dev = &pdev->dev; 2017 struct it87_sio_data *sio_data = dev->platform_data; 2018 int err = 0, i; 2019 int enable_pwm_interface; 2020 int fan_beep_need_rw; 2021 2022 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 2023 if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT, 2024 DRVNAME)) { 2025 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", 2026 (unsigned long)res->start, 2027 (unsigned long)(res->start + IT87_EC_EXTENT - 1)); 2028 return -EBUSY; 2029 } 2030 2031 data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL); 2032 if (!data) 2033 return -ENOMEM; 2034 2035 data->addr = res->start; 2036 data->type = sio_data->type; 2037 data->features = it87_devices[sio_data->type].features; 2038 data->peci_mask = it87_devices[sio_data->type].peci_mask; 2039 data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask; 2040 data->name = it87_devices[sio_data->type].name; 2041 /* 2042 * IT8705F Datasheet 0.4.1, 3h == Version G. 2043 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J. 2044 * These are the first revisions with 16-bit tachometer support. 2045 */ 2046 switch (data->type) { 2047 case it87: 2048 if (sio_data->revision >= 0x03) { 2049 data->features &= ~FEAT_OLD_AUTOPWM; 2050 data->features |= FEAT_16BIT_FANS; 2051 } 2052 break; 2053 case it8712: 2054 if (sio_data->revision >= 0x08) { 2055 data->features &= ~FEAT_OLD_AUTOPWM; 2056 data->features |= FEAT_16BIT_FANS; 2057 } 2058 break; 2059 default: 2060 break; 2061 } 2062 2063 /* Now, we do the remaining detection. */ 2064 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) 2065 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) 2066 return -ENODEV; 2067 2068 platform_set_drvdata(pdev, data); 2069 2070 mutex_init(&data->update_lock); 2071 2072 /* Check PWM configuration */ 2073 enable_pwm_interface = it87_check_pwm(dev); 2074 2075 /* Starting with IT8721F, we handle scaling of internal voltages */ 2076 if (has_12mv_adc(data)) { 2077 if (sio_data->internal & (1 << 0)) 2078 data->in_scaled |= (1 << 3); /* in3 is AVCC */ 2079 if (sio_data->internal & (1 << 1)) 2080 data->in_scaled |= (1 << 7); /* in7 is VSB */ 2081 if (sio_data->internal & (1 << 2)) 2082 data->in_scaled |= (1 << 8); /* in8 is Vbat */ 2083 } else if (sio_data->type == it8782 || sio_data->type == it8783) { 2084 if (sio_data->internal & (1 << 0)) 2085 data->in_scaled |= (1 << 3); /* in3 is VCC5V */ 2086 if (sio_data->internal & (1 << 1)) 2087 data->in_scaled |= (1 << 7); /* in7 is VCCH5V */ 2088 } 2089 2090 data->has_temp = 0x07; 2091 if (sio_data->skip_temp & (1 << 2)) { 2092 if (sio_data->type == it8782 2093 && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80)) 2094 data->has_temp &= ~(1 << 2); 2095 } 2096 2097 /* Initialize the IT87 chip */ 2098 it87_init_device(pdev); 2099 2100 /* Register sysfs hooks */ 2101 err = sysfs_create_group(&dev->kobj, &it87_group); 2102 if (err) 2103 return err; 2104 2105 for (i = 0; i < 9; i++) { 2106 if (sio_data->skip_in & (1 << i)) 2107 continue; 2108 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]); 2109 if (err) 2110 goto error; 2111 if (sio_data->beep_pin && it87_attributes_in_beep[i]) { 2112 err = sysfs_create_file(&dev->kobj, 2113 it87_attributes_in_beep[i]); 2114 if (err) 2115 goto error; 2116 } 2117 } 2118 2119 for (i = 0; i < 3; i++) { 2120 if (!(data->has_temp & (1 << i))) 2121 continue; 2122 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]); 2123 if (err) 2124 goto error; 2125 if (has_temp_offset(data)) { 2126 err = sysfs_create_file(&dev->kobj, 2127 it87_attributes_temp_offset[i]); 2128 if (err) 2129 goto error; 2130 } 2131 if (sio_data->beep_pin) { 2132 err = sysfs_create_file(&dev->kobj, 2133 it87_attributes_temp_beep[i]); 2134 if (err) 2135 goto error; 2136 } 2137 } 2138 2139 /* Do not create fan files for disabled fans */ 2140 fan_beep_need_rw = 1; 2141 for (i = 0; i < 5; i++) { 2142 if (!(data->has_fan & (1 << i))) 2143 continue; 2144 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]); 2145 if (err) 2146 goto error; 2147 2148 if (i < 3 && !has_16bit_fans(data)) { 2149 err = sysfs_create_file(&dev->kobj, 2150 it87_attributes_fan_div[i]); 2151 if (err) 2152 goto error; 2153 } 2154 2155 if (sio_data->beep_pin) { 2156 err = sysfs_create_file(&dev->kobj, 2157 it87_attributes_fan_beep[i]); 2158 if (err) 2159 goto error; 2160 if (!fan_beep_need_rw) 2161 continue; 2162 2163 /* 2164 * As we have a single beep enable bit for all fans, 2165 * only the first enabled fan has a writable attribute 2166 * for it. 2167 */ 2168 if (sysfs_chmod_file(&dev->kobj, 2169 it87_attributes_fan_beep[i], 2170 S_IRUGO | S_IWUSR)) 2171 dev_dbg(dev, "chmod +w fan%d_beep failed\n", 2172 i + 1); 2173 fan_beep_need_rw = 0; 2174 } 2175 } 2176 2177 if (enable_pwm_interface) { 2178 for (i = 0; i < 3; i++) { 2179 if (sio_data->skip_pwm & (1 << i)) 2180 continue; 2181 err = sysfs_create_group(&dev->kobj, 2182 &it87_group_pwm[i]); 2183 if (err) 2184 goto error; 2185 2186 if (!has_old_autopwm(data)) 2187 continue; 2188 err = sysfs_create_group(&dev->kobj, 2189 &it87_group_autopwm[i]); 2190 if (err) 2191 goto error; 2192 } 2193 } 2194 2195 if (!sio_data->skip_vid) { 2196 data->vrm = vid_which_vrm(); 2197 /* VID reading from Super-I/O config space if available */ 2198 data->vid = sio_data->vid_value; 2199 err = sysfs_create_group(&dev->kobj, &it87_group_vid); 2200 if (err) 2201 goto error; 2202 } 2203 2204 /* Export labels for internal sensors */ 2205 for (i = 0; i < 3; i++) { 2206 if (!(sio_data->internal & (1 << i))) 2207 continue; 2208 err = sysfs_create_file(&dev->kobj, 2209 it87_attributes_label[i]); 2210 if (err) 2211 goto error; 2212 } 2213 2214 data->hwmon_dev = hwmon_device_register(dev); 2215 if (IS_ERR(data->hwmon_dev)) { 2216 err = PTR_ERR(data->hwmon_dev); 2217 goto error; 2218 } 2219 2220 return 0; 2221 2222 error: 2223 it87_remove_files(dev); 2224 return err; 2225 } 2226 2227 static int it87_remove(struct platform_device *pdev) 2228 { 2229 struct it87_data *data = platform_get_drvdata(pdev); 2230 2231 hwmon_device_unregister(data->hwmon_dev); 2232 it87_remove_files(&pdev->dev); 2233 2234 return 0; 2235 } 2236 2237 /* 2238 * Must be called with data->update_lock held, except during initialization. 2239 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 2240 * would slow down the IT87 access and should not be necessary. 2241 */ 2242 static int it87_read_value(struct it87_data *data, u8 reg) 2243 { 2244 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 2245 return inb_p(data->addr + IT87_DATA_REG_OFFSET); 2246 } 2247 2248 /* 2249 * Must be called with data->update_lock held, except during initialization. 2250 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 2251 * would slow down the IT87 access and should not be necessary. 2252 */ 2253 static void it87_write_value(struct it87_data *data, u8 reg, u8 value) 2254 { 2255 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 2256 outb_p(value, data->addr + IT87_DATA_REG_OFFSET); 2257 } 2258 2259 /* Return 1 if and only if the PWM interface is safe to use */ 2260 static int it87_check_pwm(struct device *dev) 2261 { 2262 struct it87_data *data = dev_get_drvdata(dev); 2263 /* 2264 * Some BIOSes fail to correctly configure the IT87 fans. All fans off 2265 * and polarity set to active low is sign that this is the case so we 2266 * disable pwm control to protect the user. 2267 */ 2268 int tmp = it87_read_value(data, IT87_REG_FAN_CTL); 2269 if ((tmp & 0x87) == 0) { 2270 if (fix_pwm_polarity) { 2271 /* 2272 * The user asks us to attempt a chip reconfiguration. 2273 * This means switching to active high polarity and 2274 * inverting all fan speed values. 2275 */ 2276 int i; 2277 u8 pwm[3]; 2278 2279 for (i = 0; i < 3; i++) 2280 pwm[i] = it87_read_value(data, 2281 IT87_REG_PWM(i)); 2282 2283 /* 2284 * If any fan is in automatic pwm mode, the polarity 2285 * might be correct, as suspicious as it seems, so we 2286 * better don't change anything (but still disable the 2287 * PWM interface). 2288 */ 2289 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { 2290 dev_info(dev, 2291 "Reconfiguring PWM to active high polarity\n"); 2292 it87_write_value(data, IT87_REG_FAN_CTL, 2293 tmp | 0x87); 2294 for (i = 0; i < 3; i++) 2295 it87_write_value(data, 2296 IT87_REG_PWM(i), 2297 0x7f & ~pwm[i]); 2298 return 1; 2299 } 2300 2301 dev_info(dev, 2302 "PWM configuration is too broken to be fixed\n"); 2303 } 2304 2305 dev_info(dev, 2306 "Detected broken BIOS defaults, disabling PWM interface\n"); 2307 return 0; 2308 } else if (fix_pwm_polarity) { 2309 dev_info(dev, 2310 "PWM configuration looks sane, won't touch\n"); 2311 } 2312 2313 return 1; 2314 } 2315 2316 /* Called when we have found a new IT87. */ 2317 static void it87_init_device(struct platform_device *pdev) 2318 { 2319 struct it87_sio_data *sio_data = pdev->dev.platform_data; 2320 struct it87_data *data = platform_get_drvdata(pdev); 2321 int tmp, i; 2322 u8 mask; 2323 2324 /* 2325 * For each PWM channel: 2326 * - If it is in automatic mode, setting to manual mode should set 2327 * the fan to full speed by default. 2328 * - If it is in manual mode, we need a mapping to temperature 2329 * channels to use when later setting to automatic mode later. 2330 * Use a 1:1 mapping by default (we are clueless.) 2331 * In both cases, the value can (and should) be changed by the user 2332 * prior to switching to a different mode. 2333 * Note that this is no longer needed for the IT8721F and later, as 2334 * these have separate registers for the temperature mapping and the 2335 * manual duty cycle. 2336 */ 2337 for (i = 0; i < 3; i++) { 2338 data->pwm_temp_map[i] = i; 2339 data->pwm_duty[i] = 0x7f; /* Full speed */ 2340 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */ 2341 } 2342 2343 /* 2344 * Some chips seem to have default value 0xff for all limit 2345 * registers. For low voltage limits it makes no sense and triggers 2346 * alarms, so change to 0 instead. For high temperature limits, it 2347 * means -1 degree C, which surprisingly doesn't trigger an alarm, 2348 * but is still confusing, so change to 127 degrees C. 2349 */ 2350 for (i = 0; i < 8; i++) { 2351 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); 2352 if (tmp == 0xff) 2353 it87_write_value(data, IT87_REG_VIN_MIN(i), 0); 2354 } 2355 for (i = 0; i < 3; i++) { 2356 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 2357 if (tmp == 0xff) 2358 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); 2359 } 2360 2361 /* 2362 * Temperature channels are not forcibly enabled, as they can be 2363 * set to two different sensor types and we can't guess which one 2364 * is correct for a given system. These channels can be enabled at 2365 * run-time through the temp{1-3}_type sysfs accessors if needed. 2366 */ 2367 2368 /* Check if voltage monitors are reset manually or by some reason */ 2369 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); 2370 if ((tmp & 0xff) == 0) { 2371 /* Enable all voltage monitors */ 2372 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); 2373 } 2374 2375 /* Check if tachometers are reset manually or by some reason */ 2376 mask = 0x70 & ~(sio_data->skip_fan << 4); 2377 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); 2378 if ((data->fan_main_ctrl & mask) == 0) { 2379 /* Enable all fan tachometers */ 2380 data->fan_main_ctrl |= mask; 2381 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 2382 data->fan_main_ctrl); 2383 } 2384 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; 2385 2386 /* Set tachometers to 16-bit mode if needed */ 2387 if (has_16bit_fans(data)) { 2388 tmp = it87_read_value(data, IT87_REG_FAN_16BIT); 2389 if (~tmp & 0x07 & data->has_fan) { 2390 dev_dbg(&pdev->dev, 2391 "Setting fan1-3 to 16-bit mode\n"); 2392 it87_write_value(data, IT87_REG_FAN_16BIT, 2393 tmp | 0x07); 2394 } 2395 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */ 2396 if (data->type != it87 && data->type != it8782 && 2397 data->type != it8783) { 2398 if (tmp & (1 << 4)) 2399 data->has_fan |= (1 << 3); /* fan4 enabled */ 2400 if (tmp & (1 << 5)) 2401 data->has_fan |= (1 << 4); /* fan5 enabled */ 2402 } 2403 } 2404 2405 /* Fan input pins may be used for alternative functions */ 2406 data->has_fan &= ~sio_data->skip_fan; 2407 2408 /* Start monitoring */ 2409 it87_write_value(data, IT87_REG_CONFIG, 2410 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e) 2411 | (update_vbat ? 0x41 : 0x01)); 2412 } 2413 2414 static void it87_update_pwm_ctrl(struct it87_data *data, int nr) 2415 { 2416 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr)); 2417 if (has_newer_autopwm(data)) { 2418 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; 2419 data->pwm_duty[nr] = it87_read_value(data, 2420 IT87_REG_PWM_DUTY(nr)); 2421 } else { 2422 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 2423 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; 2424 else /* Manual mode */ 2425 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f; 2426 } 2427 2428 if (has_old_autopwm(data)) { 2429 int i; 2430 2431 for (i = 0; i < 5 ; i++) 2432 data->auto_temp[nr][i] = it87_read_value(data, 2433 IT87_REG_AUTO_TEMP(nr, i)); 2434 for (i = 0; i < 3 ; i++) 2435 data->auto_pwm[nr][i] = it87_read_value(data, 2436 IT87_REG_AUTO_PWM(nr, i)); 2437 } 2438 } 2439 2440 static struct it87_data *it87_update_device(struct device *dev) 2441 { 2442 struct it87_data *data = dev_get_drvdata(dev); 2443 int i; 2444 2445 mutex_lock(&data->update_lock); 2446 2447 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 2448 || !data->valid) { 2449 if (update_vbat) { 2450 /* 2451 * Cleared after each update, so reenable. Value 2452 * returned by this read will be previous value 2453 */ 2454 it87_write_value(data, IT87_REG_CONFIG, 2455 it87_read_value(data, IT87_REG_CONFIG) | 0x40); 2456 } 2457 for (i = 0; i <= 7; i++) { 2458 data->in[i][0] = 2459 it87_read_value(data, IT87_REG_VIN(i)); 2460 data->in[i][1] = 2461 it87_read_value(data, IT87_REG_VIN_MIN(i)); 2462 data->in[i][2] = 2463 it87_read_value(data, IT87_REG_VIN_MAX(i)); 2464 } 2465 /* in8 (battery) has no limit registers */ 2466 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8)); 2467 2468 for (i = 0; i < 5; i++) { 2469 /* Skip disabled fans */ 2470 if (!(data->has_fan & (1 << i))) 2471 continue; 2472 2473 data->fan[i][1] = 2474 it87_read_value(data, IT87_REG_FAN_MIN[i]); 2475 data->fan[i][0] = it87_read_value(data, 2476 IT87_REG_FAN[i]); 2477 /* Add high byte if in 16-bit mode */ 2478 if (has_16bit_fans(data)) { 2479 data->fan[i][0] |= it87_read_value(data, 2480 IT87_REG_FANX[i]) << 8; 2481 data->fan[i][1] |= it87_read_value(data, 2482 IT87_REG_FANX_MIN[i]) << 8; 2483 } 2484 } 2485 for (i = 0; i < 3; i++) { 2486 if (!(data->has_temp & (1 << i))) 2487 continue; 2488 data->temp[i][0] = 2489 it87_read_value(data, IT87_REG_TEMP(i)); 2490 data->temp[i][1] = 2491 it87_read_value(data, IT87_REG_TEMP_LOW(i)); 2492 data->temp[i][2] = 2493 it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 2494 if (has_temp_offset(data)) 2495 data->temp[i][3] = 2496 it87_read_value(data, 2497 IT87_REG_TEMP_OFFSET[i]); 2498 } 2499 2500 /* Newer chips don't have clock dividers */ 2501 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) { 2502 i = it87_read_value(data, IT87_REG_FAN_DIV); 2503 data->fan_div[0] = i & 0x07; 2504 data->fan_div[1] = (i >> 3) & 0x07; 2505 data->fan_div[2] = (i & 0x40) ? 3 : 1; 2506 } 2507 2508 data->alarms = 2509 it87_read_value(data, IT87_REG_ALARM1) | 2510 (it87_read_value(data, IT87_REG_ALARM2) << 8) | 2511 (it87_read_value(data, IT87_REG_ALARM3) << 16); 2512 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 2513 2514 data->fan_main_ctrl = it87_read_value(data, 2515 IT87_REG_FAN_MAIN_CTRL); 2516 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); 2517 for (i = 0; i < 3; i++) 2518 it87_update_pwm_ctrl(data, i); 2519 2520 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); 2521 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA); 2522 /* 2523 * The IT8705F does not have VID capability. 2524 * The IT8718F and later don't use IT87_REG_VID for the 2525 * same purpose. 2526 */ 2527 if (data->type == it8712 || data->type == it8716) { 2528 data->vid = it87_read_value(data, IT87_REG_VID); 2529 /* 2530 * The older IT8712F revisions had only 5 VID pins, 2531 * but we assume it is always safe to read 6 bits. 2532 */ 2533 data->vid &= 0x3f; 2534 } 2535 data->last_updated = jiffies; 2536 data->valid = 1; 2537 } 2538 2539 mutex_unlock(&data->update_lock); 2540 2541 return data; 2542 } 2543 2544 static int __init it87_device_add(unsigned short address, 2545 const struct it87_sio_data *sio_data) 2546 { 2547 struct resource res = { 2548 .start = address + IT87_EC_OFFSET, 2549 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, 2550 .name = DRVNAME, 2551 .flags = IORESOURCE_IO, 2552 }; 2553 int err; 2554 2555 err = acpi_check_resource_conflict(&res); 2556 if (err) 2557 goto exit; 2558 2559 pdev = platform_device_alloc(DRVNAME, address); 2560 if (!pdev) { 2561 err = -ENOMEM; 2562 pr_err("Device allocation failed\n"); 2563 goto exit; 2564 } 2565 2566 err = platform_device_add_resources(pdev, &res, 1); 2567 if (err) { 2568 pr_err("Device resource addition failed (%d)\n", err); 2569 goto exit_device_put; 2570 } 2571 2572 err = platform_device_add_data(pdev, sio_data, 2573 sizeof(struct it87_sio_data)); 2574 if (err) { 2575 pr_err("Platform data allocation failed\n"); 2576 goto exit_device_put; 2577 } 2578 2579 err = platform_device_add(pdev); 2580 if (err) { 2581 pr_err("Device addition failed (%d)\n", err); 2582 goto exit_device_put; 2583 } 2584 2585 return 0; 2586 2587 exit_device_put: 2588 platform_device_put(pdev); 2589 exit: 2590 return err; 2591 } 2592 2593 static int __init sm_it87_init(void) 2594 { 2595 int err; 2596 unsigned short isa_address = 0; 2597 struct it87_sio_data sio_data; 2598 2599 memset(&sio_data, 0, sizeof(struct it87_sio_data)); 2600 err = it87_find(&isa_address, &sio_data); 2601 if (err) 2602 return err; 2603 err = platform_driver_register(&it87_driver); 2604 if (err) 2605 return err; 2606 2607 err = it87_device_add(isa_address, &sio_data); 2608 if (err) { 2609 platform_driver_unregister(&it87_driver); 2610 return err; 2611 } 2612 2613 return 0; 2614 } 2615 2616 static void __exit sm_it87_exit(void) 2617 { 2618 platform_device_unregister(pdev); 2619 platform_driver_unregister(&it87_driver); 2620 } 2621 2622 2623 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>"); 2624 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver"); 2625 module_param(update_vbat, bool, 0); 2626 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); 2627 module_param(fix_pwm_polarity, bool, 0); 2628 MODULE_PARM_DESC(fix_pwm_polarity, 2629 "Force PWM polarity to active high (DANGEROUS)"); 2630 MODULE_LICENSE("GPL"); 2631 2632 module_init(sm_it87_init); 2633 module_exit(sm_it87_exit); 2634