1 /* 2 * it87.c - Part of lm_sensors, Linux kernel modules for hardware 3 * monitoring. 4 * 5 * The IT8705F is an LPC-based Super I/O part that contains UARTs, a 6 * parallel port, an IR port, a MIDI port, a floppy controller, etc., in 7 * addition to an Environment Controller (Enhanced Hardware Monitor and 8 * Fan Controller) 9 * 10 * This driver supports only the Environment Controller in the IT8705F and 11 * similar parts. The other devices are supported by different drivers. 12 * 13 * Supports: IT8705F Super I/O chip w/LPC interface 14 * IT8712F Super I/O chip w/LPC interface 15 * IT8716F Super I/O chip w/LPC interface 16 * IT8718F Super I/O chip w/LPC interface 17 * IT8720F Super I/O chip w/LPC interface 18 * IT8721F Super I/O chip w/LPC interface 19 * IT8726F Super I/O chip w/LPC interface 20 * IT8728F Super I/O chip w/LPC interface 21 * IT8758E Super I/O chip w/LPC interface 22 * IT8782F Super I/O chip w/LPC interface 23 * IT8783E/F Super I/O chip w/LPC interface 24 * Sis950 A clone of the IT8705F 25 * 26 * Copyright (C) 2001 Chris Gauthron 27 * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org> 28 * 29 * This program is free software; you can redistribute it and/or modify 30 * it under the terms of the GNU General Public License as published by 31 * the Free Software Foundation; either version 2 of the License, or 32 * (at your option) any later version. 33 * 34 * This program is distributed in the hope that it will be useful, 35 * but WITHOUT ANY WARRANTY; without even the implied warranty of 36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 37 * GNU General Public License for more details. 38 * 39 * You should have received a copy of the GNU General Public License 40 * along with this program; if not, write to the Free Software 41 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 42 */ 43 44 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 45 46 #include <linux/module.h> 47 #include <linux/init.h> 48 #include <linux/slab.h> 49 #include <linux/jiffies.h> 50 #include <linux/platform_device.h> 51 #include <linux/hwmon.h> 52 #include <linux/hwmon-sysfs.h> 53 #include <linux/hwmon-vid.h> 54 #include <linux/err.h> 55 #include <linux/mutex.h> 56 #include <linux/sysfs.h> 57 #include <linux/string.h> 58 #include <linux/dmi.h> 59 #include <linux/acpi.h> 60 #include <linux/io.h> 61 62 #define DRVNAME "it87" 63 64 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8782, 65 it8783 }; 66 67 static unsigned short force_id; 68 module_param(force_id, ushort, 0); 69 MODULE_PARM_DESC(force_id, "Override the detected device ID"); 70 71 static struct platform_device *pdev; 72 73 #define REG 0x2e /* The register to read/write */ 74 #define DEV 0x07 /* Register: Logical device select */ 75 #define VAL 0x2f /* The value to read/write */ 76 #define PME 0x04 /* The device with the fan registers in it */ 77 78 /* The device with the IT8718F/IT8720F VID value in it */ 79 #define GPIO 0x07 80 81 #define DEVID 0x20 /* Register: Device ID */ 82 #define DEVREV 0x22 /* Register: Device Revision */ 83 84 static inline int superio_inb(int reg) 85 { 86 outb(reg, REG); 87 return inb(VAL); 88 } 89 90 static inline void superio_outb(int reg, int val) 91 { 92 outb(reg, REG); 93 outb(val, VAL); 94 } 95 96 static int superio_inw(int reg) 97 { 98 int val; 99 outb(reg++, REG); 100 val = inb(VAL) << 8; 101 outb(reg, REG); 102 val |= inb(VAL); 103 return val; 104 } 105 106 static inline void superio_select(int ldn) 107 { 108 outb(DEV, REG); 109 outb(ldn, VAL); 110 } 111 112 static inline int superio_enter(void) 113 { 114 /* 115 * Try to reserve REG and REG + 1 for exclusive access. 116 */ 117 if (!request_muxed_region(REG, 2, DRVNAME)) 118 return -EBUSY; 119 120 outb(0x87, REG); 121 outb(0x01, REG); 122 outb(0x55, REG); 123 outb(0x55, REG); 124 return 0; 125 } 126 127 static inline void superio_exit(void) 128 { 129 outb(0x02, REG); 130 outb(0x02, VAL); 131 release_region(REG, 2); 132 } 133 134 /* Logical device 4 registers */ 135 #define IT8712F_DEVID 0x8712 136 #define IT8705F_DEVID 0x8705 137 #define IT8716F_DEVID 0x8716 138 #define IT8718F_DEVID 0x8718 139 #define IT8720F_DEVID 0x8720 140 #define IT8721F_DEVID 0x8721 141 #define IT8726F_DEVID 0x8726 142 #define IT8728F_DEVID 0x8728 143 #define IT8782F_DEVID 0x8782 144 #define IT8783E_DEVID 0x8783 145 #define IT87_ACT_REG 0x30 146 #define IT87_BASE_REG 0x60 147 148 /* Logical device 7 registers (IT8712F and later) */ 149 #define IT87_SIO_GPIO1_REG 0x25 150 #define IT87_SIO_GPIO3_REG 0x27 151 #define IT87_SIO_GPIO5_REG 0x29 152 #define IT87_SIO_PINX1_REG 0x2a /* Pin selection */ 153 #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ 154 #define IT87_SIO_SPI_REG 0xef /* SPI function pin select */ 155 #define IT87_SIO_VID_REG 0xfc /* VID value */ 156 #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */ 157 158 /* Update battery voltage after every reading if true */ 159 static bool update_vbat; 160 161 /* Not all BIOSes properly configure the PWM registers */ 162 static bool fix_pwm_polarity; 163 164 /* Many IT87 constants specified below */ 165 166 /* Length of ISA address segment */ 167 #define IT87_EXTENT 8 168 169 /* Length of ISA address segment for Environmental Controller */ 170 #define IT87_EC_EXTENT 2 171 172 /* Offset of EC registers from ISA base address */ 173 #define IT87_EC_OFFSET 5 174 175 /* Where are the ISA address/data registers relative to the EC base address */ 176 #define IT87_ADDR_REG_OFFSET 0 177 #define IT87_DATA_REG_OFFSET 1 178 179 /*----- The IT87 registers -----*/ 180 181 #define IT87_REG_CONFIG 0x00 182 183 #define IT87_REG_ALARM1 0x01 184 #define IT87_REG_ALARM2 0x02 185 #define IT87_REG_ALARM3 0x03 186 187 /* 188 * The IT8718F and IT8720F have the VID value in a different register, in 189 * Super-I/O configuration space. 190 */ 191 #define IT87_REG_VID 0x0a 192 /* 193 * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b 194 * for fan divisors. Later IT8712F revisions must use 16-bit tachometer 195 * mode. 196 */ 197 #define IT87_REG_FAN_DIV 0x0b 198 #define IT87_REG_FAN_16BIT 0x0c 199 200 /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ 201 202 static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; 203 static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; 204 static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; 205 static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; 206 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 }; 207 208 #define IT87_REG_FAN_MAIN_CTRL 0x13 209 #define IT87_REG_FAN_CTL 0x14 210 #define IT87_REG_PWM(nr) (0x15 + (nr)) 211 #define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8) 212 213 #define IT87_REG_VIN(nr) (0x20 + (nr)) 214 #define IT87_REG_TEMP(nr) (0x29 + (nr)) 215 216 #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) 217 #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) 218 #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) 219 #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) 220 221 #define IT87_REG_VIN_ENABLE 0x50 222 #define IT87_REG_TEMP_ENABLE 0x51 223 #define IT87_REG_TEMP_EXTRA 0x55 224 #define IT87_REG_BEEP_ENABLE 0x5c 225 226 #define IT87_REG_CHIPID 0x58 227 228 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i)) 229 #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i)) 230 231 struct it87_devices { 232 const char *name; 233 u16 features; 234 u8 peci_mask; 235 u8 old_peci_mask; 236 }; 237 238 #define FEAT_12MV_ADC (1 << 0) 239 #define FEAT_NEWER_AUTOPWM (1 << 1) 240 #define FEAT_OLD_AUTOPWM (1 << 2) 241 #define FEAT_16BIT_FANS (1 << 3) 242 #define FEAT_TEMP_OFFSET (1 << 4) 243 #define FEAT_TEMP_PECI (1 << 5) 244 #define FEAT_TEMP_OLD_PECI (1 << 6) 245 246 static const struct it87_devices it87_devices[] = { 247 [it87] = { 248 .name = "it87", 249 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */ 250 }, 251 [it8712] = { 252 .name = "it8712", 253 .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */ 254 }, 255 [it8716] = { 256 .name = "it8716", 257 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET, 258 }, 259 [it8718] = { 260 .name = "it8718", 261 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 262 | FEAT_TEMP_OLD_PECI, 263 .old_peci_mask = 0x4, 264 }, 265 [it8720] = { 266 .name = "it8720", 267 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 268 | FEAT_TEMP_OLD_PECI, 269 .old_peci_mask = 0x4, 270 }, 271 [it8721] = { 272 .name = "it8721", 273 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 274 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI, 275 .peci_mask = 0x05, 276 .old_peci_mask = 0x02, /* Actually reports PCH */ 277 }, 278 [it8728] = { 279 .name = "it8728", 280 .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS 281 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, 282 .peci_mask = 0x07, 283 }, 284 [it8782] = { 285 .name = "it8782", 286 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 287 | FEAT_TEMP_OLD_PECI, 288 .old_peci_mask = 0x4, 289 }, 290 [it8783] = { 291 .name = "it8783", 292 .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET 293 | FEAT_TEMP_OLD_PECI, 294 .old_peci_mask = 0x4, 295 }, 296 }; 297 298 #define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS) 299 #define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC) 300 #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM) 301 #define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM) 302 #define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET) 303 #define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \ 304 ((data)->peci_mask & (1 << nr))) 305 #define has_temp_old_peci(data, nr) \ 306 (((data)->features & FEAT_TEMP_OLD_PECI) && \ 307 ((data)->old_peci_mask & (1 << nr))) 308 309 struct it87_sio_data { 310 enum chips type; 311 /* Values read from Super-I/O config space */ 312 u8 revision; 313 u8 vid_value; 314 u8 beep_pin; 315 u8 internal; /* Internal sensors can be labeled */ 316 /* Features skipped based on config or DMI */ 317 u16 skip_in; 318 u8 skip_vid; 319 u8 skip_fan; 320 u8 skip_pwm; 321 u8 skip_temp; 322 }; 323 324 /* 325 * For each registered chip, we need to keep some data in memory. 326 * The structure is dynamically allocated. 327 */ 328 struct it87_data { 329 struct device *hwmon_dev; 330 enum chips type; 331 u16 features; 332 u8 peci_mask; 333 u8 old_peci_mask; 334 335 unsigned short addr; 336 const char *name; 337 struct mutex update_lock; 338 char valid; /* !=0 if following fields are valid */ 339 unsigned long last_updated; /* In jiffies */ 340 341 u16 in_scaled; /* Internal voltage sensors are scaled */ 342 u8 in[9][3]; /* [nr][0]=in, [1]=min, [2]=max */ 343 u8 has_fan; /* Bitfield, fans enabled */ 344 u16 fan[5][2]; /* Register values, [nr][0]=fan, [1]=min */ 345 u8 has_temp; /* Bitfield, temp sensors enabled */ 346 s8 temp[3][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */ 347 u8 sensor; /* Register value (IT87_REG_TEMP_ENABLE) */ 348 u8 extra; /* Register value (IT87_REG_TEMP_EXTRA) */ 349 u8 fan_div[3]; /* Register encoding, shifted right */ 350 u8 vid; /* Register encoding, combined */ 351 u8 vrm; 352 u32 alarms; /* Register encoding, combined */ 353 u8 beeps; /* Register encoding */ 354 u8 fan_main_ctrl; /* Register value */ 355 u8 fan_ctl; /* Register value */ 356 357 /* 358 * The following 3 arrays correspond to the same registers up to 359 * the IT8720F. The meaning of bits 6-0 depends on the value of bit 360 * 7, and we want to preserve settings on mode changes, so we have 361 * to track all values separately. 362 * Starting with the IT8721F, the manual PWM duty cycles are stored 363 * in separate registers (8-bit values), so the separate tracking 364 * is no longer needed, but it is still done to keep the driver 365 * simple. 366 */ 367 u8 pwm_ctrl[3]; /* Register value */ 368 u8 pwm_duty[3]; /* Manual PWM value set by user */ 369 u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */ 370 371 /* Automatic fan speed control registers */ 372 u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */ 373 s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */ 374 }; 375 376 static int adc_lsb(const struct it87_data *data, int nr) 377 { 378 int lsb = has_12mv_adc(data) ? 12 : 16; 379 if (data->in_scaled & (1 << nr)) 380 lsb <<= 1; 381 return lsb; 382 } 383 384 static u8 in_to_reg(const struct it87_data *data, int nr, long val) 385 { 386 val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr)); 387 return SENSORS_LIMIT(val, 0, 255); 388 } 389 390 static int in_from_reg(const struct it87_data *data, int nr, int val) 391 { 392 return val * adc_lsb(data, nr); 393 } 394 395 static inline u8 FAN_TO_REG(long rpm, int div) 396 { 397 if (rpm == 0) 398 return 255; 399 rpm = SENSORS_LIMIT(rpm, 1, 1000000); 400 return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 401 254); 402 } 403 404 static inline u16 FAN16_TO_REG(long rpm) 405 { 406 if (rpm == 0) 407 return 0xffff; 408 return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); 409 } 410 411 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \ 412 1350000 / ((val) * (div))) 413 /* The divider is fixed to 2 in 16-bit mode */ 414 #define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \ 415 1350000 / ((val) * 2)) 416 417 #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \ 418 ((val) + 500) / 1000), -128, 127)) 419 #define TEMP_FROM_REG(val) ((val) * 1000) 420 421 static u8 pwm_to_reg(const struct it87_data *data, long val) 422 { 423 if (has_newer_autopwm(data)) 424 return val; 425 else 426 return val >> 1; 427 } 428 429 static int pwm_from_reg(const struct it87_data *data, u8 reg) 430 { 431 if (has_newer_autopwm(data)) 432 return reg; 433 else 434 return (reg & 0x7f) << 1; 435 } 436 437 438 static int DIV_TO_REG(int val) 439 { 440 int answer = 0; 441 while (answer < 7 && (val >>= 1)) 442 answer++; 443 return answer; 444 } 445 #define DIV_FROM_REG(val) (1 << (val)) 446 447 static const unsigned int pwm_freq[8] = { 448 48000000 / 128, 449 24000000 / 128, 450 12000000 / 128, 451 8000000 / 128, 452 6000000 / 128, 453 3000000 / 128, 454 1500000 / 128, 455 750000 / 128, 456 }; 457 458 static int it87_probe(struct platform_device *pdev); 459 static int it87_remove(struct platform_device *pdev); 460 461 static int it87_read_value(struct it87_data *data, u8 reg); 462 static void it87_write_value(struct it87_data *data, u8 reg, u8 value); 463 static struct it87_data *it87_update_device(struct device *dev); 464 static int it87_check_pwm(struct device *dev); 465 static void it87_init_device(struct platform_device *pdev); 466 467 468 static struct platform_driver it87_driver = { 469 .driver = { 470 .owner = THIS_MODULE, 471 .name = DRVNAME, 472 }, 473 .probe = it87_probe, 474 .remove = it87_remove, 475 }; 476 477 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 478 char *buf) 479 { 480 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 481 int nr = sattr->nr; 482 int index = sattr->index; 483 484 struct it87_data *data = it87_update_device(dev); 485 return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index])); 486 } 487 488 static ssize_t set_in(struct device *dev, struct device_attribute *attr, 489 const char *buf, size_t count) 490 { 491 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 492 int nr = sattr->nr; 493 int index = sattr->index; 494 495 struct it87_data *data = dev_get_drvdata(dev); 496 unsigned long val; 497 498 if (kstrtoul(buf, 10, &val) < 0) 499 return -EINVAL; 500 501 mutex_lock(&data->update_lock); 502 data->in[nr][index] = in_to_reg(data, nr, val); 503 it87_write_value(data, 504 index == 1 ? IT87_REG_VIN_MIN(nr) 505 : IT87_REG_VIN_MAX(nr), 506 data->in[nr][index]); 507 mutex_unlock(&data->update_lock); 508 return count; 509 } 510 511 static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0); 512 static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in, 513 0, 1); 514 static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in, 515 0, 2); 516 517 static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0); 518 static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in, 519 1, 1); 520 static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in, 521 1, 2); 522 523 static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0); 524 static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in, 525 2, 1); 526 static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in, 527 2, 2); 528 529 static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0); 530 static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in, 531 3, 1); 532 static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in, 533 3, 2); 534 535 static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0); 536 static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in, 537 4, 1); 538 static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in, 539 4, 2); 540 541 static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0); 542 static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in, 543 5, 1); 544 static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in, 545 5, 2); 546 547 static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0); 548 static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in, 549 6, 1); 550 static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in, 551 6, 2); 552 553 static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0); 554 static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in, 555 7, 1); 556 static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in, 557 7, 2); 558 559 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0); 560 561 /* 3 temperatures */ 562 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 563 char *buf) 564 { 565 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 566 int nr = sattr->nr; 567 int index = sattr->index; 568 struct it87_data *data = it87_update_device(dev); 569 570 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index])); 571 } 572 573 static ssize_t set_temp(struct device *dev, struct device_attribute *attr, 574 const char *buf, size_t count) 575 { 576 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 577 int nr = sattr->nr; 578 int index = sattr->index; 579 struct it87_data *data = dev_get_drvdata(dev); 580 long val; 581 u8 reg, regval; 582 583 if (kstrtol(buf, 10, &val) < 0) 584 return -EINVAL; 585 586 mutex_lock(&data->update_lock); 587 588 switch (index) { 589 default: 590 case 1: 591 reg = IT87_REG_TEMP_LOW(nr); 592 break; 593 case 2: 594 reg = IT87_REG_TEMP_HIGH(nr); 595 break; 596 case 3: 597 regval = it87_read_value(data, IT87_REG_BEEP_ENABLE); 598 if (!(regval & 0x80)) { 599 regval |= 0x80; 600 it87_write_value(data, IT87_REG_BEEP_ENABLE, regval); 601 } 602 data->valid = 0; 603 reg = IT87_REG_TEMP_OFFSET[nr]; 604 break; 605 } 606 607 data->temp[nr][index] = TEMP_TO_REG(val); 608 it87_write_value(data, reg, data->temp[nr][index]); 609 mutex_unlock(&data->update_lock); 610 return count; 611 } 612 613 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0); 614 static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 615 0, 1); 616 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 617 0, 2); 618 static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp, 619 set_temp, 0, 3); 620 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0); 621 static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 622 1, 1); 623 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 624 1, 2); 625 static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp, 626 set_temp, 1, 3); 627 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0); 628 static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp, 629 2, 1); 630 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp, 631 2, 2); 632 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp, 633 set_temp, 2, 3); 634 635 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr, 636 char *buf) 637 { 638 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 639 int nr = sensor_attr->index; 640 struct it87_data *data = it87_update_device(dev); 641 u8 reg = data->sensor; /* In case value is updated while used */ 642 u8 extra = data->extra; 643 644 if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) 645 || (has_temp_old_peci(data, nr) && (extra & 0x80))) 646 return sprintf(buf, "6\n"); /* Intel PECI */ 647 if (reg & (1 << nr)) 648 return sprintf(buf, "3\n"); /* thermal diode */ 649 if (reg & (8 << nr)) 650 return sprintf(buf, "4\n"); /* thermistor */ 651 return sprintf(buf, "0\n"); /* disabled */ 652 } 653 654 static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr, 655 const char *buf, size_t count) 656 { 657 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 658 int nr = sensor_attr->index; 659 660 struct it87_data *data = dev_get_drvdata(dev); 661 long val; 662 u8 reg, extra; 663 664 if (kstrtol(buf, 10, &val) < 0) 665 return -EINVAL; 666 667 reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); 668 reg &= ~(1 << nr); 669 reg &= ~(8 << nr); 670 if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6)) 671 reg &= 0x3f; 672 extra = it87_read_value(data, IT87_REG_TEMP_EXTRA); 673 if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6)) 674 extra &= 0x7f; 675 if (val == 2) { /* backwards compatibility */ 676 dev_warn(dev, 677 "Sensor type 2 is deprecated, please use 4 instead\n"); 678 val = 4; 679 } 680 /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */ 681 if (val == 3) 682 reg |= 1 << nr; 683 else if (val == 4) 684 reg |= 8 << nr; 685 else if (has_temp_peci(data, nr) && val == 6) 686 reg |= (nr + 1) << 6; 687 else if (has_temp_old_peci(data, nr) && val == 6) 688 extra |= 0x80; 689 else if (val != 0) 690 return -EINVAL; 691 692 mutex_lock(&data->update_lock); 693 data->sensor = reg; 694 data->extra = extra; 695 it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); 696 if (has_temp_old_peci(data, nr)) 697 it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra); 698 data->valid = 0; /* Force cache refresh */ 699 mutex_unlock(&data->update_lock); 700 return count; 701 } 702 703 static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type, 704 set_temp_type, 0); 705 static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type, 706 set_temp_type, 1); 707 static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type, 708 set_temp_type, 2); 709 710 /* 3 Fans */ 711 712 static int pwm_mode(const struct it87_data *data, int nr) 713 { 714 int ctrl = data->fan_main_ctrl & (1 << nr); 715 716 if (ctrl == 0) /* Full speed */ 717 return 0; 718 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 719 return 2; 720 else /* Manual mode */ 721 return 1; 722 } 723 724 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 725 char *buf) 726 { 727 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 728 int nr = sattr->nr; 729 int index = sattr->index; 730 int speed; 731 struct it87_data *data = it87_update_device(dev); 732 733 speed = has_16bit_fans(data) ? 734 FAN16_FROM_REG(data->fan[nr][index]) : 735 FAN_FROM_REG(data->fan[nr][index], 736 DIV_FROM_REG(data->fan_div[nr])); 737 return sprintf(buf, "%d\n", speed); 738 } 739 740 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, 741 char *buf) 742 { 743 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 744 int nr = sensor_attr->index; 745 746 struct it87_data *data = it87_update_device(dev); 747 return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); 748 } 749 static ssize_t show_pwm_enable(struct device *dev, 750 struct device_attribute *attr, char *buf) 751 { 752 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 753 int nr = sensor_attr->index; 754 755 struct it87_data *data = it87_update_device(dev); 756 return sprintf(buf, "%d\n", pwm_mode(data, nr)); 757 } 758 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 759 char *buf) 760 { 761 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 762 int nr = sensor_attr->index; 763 764 struct it87_data *data = it87_update_device(dev); 765 return sprintf(buf, "%d\n", 766 pwm_from_reg(data, data->pwm_duty[nr])); 767 } 768 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, 769 char *buf) 770 { 771 struct it87_data *data = it87_update_device(dev); 772 int index = (data->fan_ctl >> 4) & 0x07; 773 774 return sprintf(buf, "%u\n", pwm_freq[index]); 775 } 776 777 static ssize_t set_fan(struct device *dev, struct device_attribute *attr, 778 const char *buf, size_t count) 779 { 780 struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); 781 int nr = sattr->nr; 782 int index = sattr->index; 783 784 struct it87_data *data = dev_get_drvdata(dev); 785 long val; 786 u8 reg; 787 788 if (kstrtol(buf, 10, &val) < 0) 789 return -EINVAL; 790 791 mutex_lock(&data->update_lock); 792 793 if (has_16bit_fans(data)) { 794 data->fan[nr][index] = FAN16_TO_REG(val); 795 it87_write_value(data, IT87_REG_FAN_MIN[nr], 796 data->fan[nr][index] & 0xff); 797 it87_write_value(data, IT87_REG_FANX_MIN[nr], 798 data->fan[nr][index] >> 8); 799 } else { 800 reg = it87_read_value(data, IT87_REG_FAN_DIV); 801 switch (nr) { 802 case 0: 803 data->fan_div[nr] = reg & 0x07; 804 break; 805 case 1: 806 data->fan_div[nr] = (reg >> 3) & 0x07; 807 break; 808 case 2: 809 data->fan_div[nr] = (reg & 0x40) ? 3 : 1; 810 break; 811 } 812 data->fan[nr][index] = 813 FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); 814 it87_write_value(data, IT87_REG_FAN_MIN[nr], 815 data->fan[nr][index]); 816 } 817 818 mutex_unlock(&data->update_lock); 819 return count; 820 } 821 822 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 823 const char *buf, size_t count) 824 { 825 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 826 int nr = sensor_attr->index; 827 828 struct it87_data *data = dev_get_drvdata(dev); 829 unsigned long val; 830 int min; 831 u8 old; 832 833 if (kstrtoul(buf, 10, &val) < 0) 834 return -EINVAL; 835 836 mutex_lock(&data->update_lock); 837 old = it87_read_value(data, IT87_REG_FAN_DIV); 838 839 /* Save fan min limit */ 840 min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr])); 841 842 switch (nr) { 843 case 0: 844 case 1: 845 data->fan_div[nr] = DIV_TO_REG(val); 846 break; 847 case 2: 848 if (val < 8) 849 data->fan_div[nr] = 1; 850 else 851 data->fan_div[nr] = 3; 852 } 853 val = old & 0x80; 854 val |= (data->fan_div[0] & 0x07); 855 val |= (data->fan_div[1] & 0x07) << 3; 856 if (data->fan_div[2] == 3) 857 val |= 0x1 << 6; 858 it87_write_value(data, IT87_REG_FAN_DIV, val); 859 860 /* Restore fan min limit */ 861 data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); 862 it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]); 863 864 mutex_unlock(&data->update_lock); 865 return count; 866 } 867 868 /* Returns 0 if OK, -EINVAL otherwise */ 869 static int check_trip_points(struct device *dev, int nr) 870 { 871 const struct it87_data *data = dev_get_drvdata(dev); 872 int i, err = 0; 873 874 if (has_old_autopwm(data)) { 875 for (i = 0; i < 3; i++) { 876 if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1]) 877 err = -EINVAL; 878 } 879 for (i = 0; i < 2; i++) { 880 if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1]) 881 err = -EINVAL; 882 } 883 } 884 885 if (err) { 886 dev_err(dev, 887 "Inconsistent trip points, not switching to automatic mode\n"); 888 dev_err(dev, "Adjust the trip points and try again\n"); 889 } 890 return err; 891 } 892 893 static ssize_t set_pwm_enable(struct device *dev, 894 struct device_attribute *attr, const char *buf, size_t count) 895 { 896 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 897 int nr = sensor_attr->index; 898 899 struct it87_data *data = dev_get_drvdata(dev); 900 long val; 901 902 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2) 903 return -EINVAL; 904 905 /* Check trip points before switching to automatic mode */ 906 if (val == 2) { 907 if (check_trip_points(dev, nr) < 0) 908 return -EINVAL; 909 } 910 911 mutex_lock(&data->update_lock); 912 913 if (val == 0) { 914 int tmp; 915 /* make sure the fan is on when in on/off mode */ 916 tmp = it87_read_value(data, IT87_REG_FAN_CTL); 917 it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); 918 /* set on/off mode */ 919 data->fan_main_ctrl &= ~(1 << nr); 920 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 921 data->fan_main_ctrl); 922 } else { 923 if (val == 1) /* Manual mode */ 924 data->pwm_ctrl[nr] = has_newer_autopwm(data) ? 925 data->pwm_temp_map[nr] : 926 data->pwm_duty[nr]; 927 else /* Automatic mode */ 928 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 929 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 930 /* set SmartGuardian mode */ 931 data->fan_main_ctrl |= (1 << nr); 932 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 933 data->fan_main_ctrl); 934 } 935 936 mutex_unlock(&data->update_lock); 937 return count; 938 } 939 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 940 const char *buf, size_t count) 941 { 942 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 943 int nr = sensor_attr->index; 944 945 struct it87_data *data = dev_get_drvdata(dev); 946 long val; 947 948 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) 949 return -EINVAL; 950 951 mutex_lock(&data->update_lock); 952 if (has_newer_autopwm(data)) { 953 /* 954 * If we are in automatic mode, the PWM duty cycle register 955 * is read-only so we can't write the value. 956 */ 957 if (data->pwm_ctrl[nr] & 0x80) { 958 mutex_unlock(&data->update_lock); 959 return -EBUSY; 960 } 961 data->pwm_duty[nr] = pwm_to_reg(data, val); 962 it87_write_value(data, IT87_REG_PWM_DUTY(nr), 963 data->pwm_duty[nr]); 964 } else { 965 data->pwm_duty[nr] = pwm_to_reg(data, val); 966 /* 967 * If we are in manual mode, write the duty cycle immediately; 968 * otherwise, just store it for later use. 969 */ 970 if (!(data->pwm_ctrl[nr] & 0x80)) { 971 data->pwm_ctrl[nr] = data->pwm_duty[nr]; 972 it87_write_value(data, IT87_REG_PWM(nr), 973 data->pwm_ctrl[nr]); 974 } 975 } 976 mutex_unlock(&data->update_lock); 977 return count; 978 } 979 static ssize_t set_pwm_freq(struct device *dev, 980 struct device_attribute *attr, const char *buf, size_t count) 981 { 982 struct it87_data *data = dev_get_drvdata(dev); 983 unsigned long val; 984 int i; 985 986 if (kstrtoul(buf, 10, &val) < 0) 987 return -EINVAL; 988 989 /* Search for the nearest available frequency */ 990 for (i = 0; i < 7; i++) { 991 if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) 992 break; 993 } 994 995 mutex_lock(&data->update_lock); 996 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; 997 data->fan_ctl |= i << 4; 998 it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); 999 mutex_unlock(&data->update_lock); 1000 1001 return count; 1002 } 1003 static ssize_t show_pwm_temp_map(struct device *dev, 1004 struct device_attribute *attr, char *buf) 1005 { 1006 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1007 int nr = sensor_attr->index; 1008 1009 struct it87_data *data = it87_update_device(dev); 1010 int map; 1011 1012 if (data->pwm_temp_map[nr] < 3) 1013 map = 1 << data->pwm_temp_map[nr]; 1014 else 1015 map = 0; /* Should never happen */ 1016 return sprintf(buf, "%d\n", map); 1017 } 1018 static ssize_t set_pwm_temp_map(struct device *dev, 1019 struct device_attribute *attr, const char *buf, size_t count) 1020 { 1021 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1022 int nr = sensor_attr->index; 1023 1024 struct it87_data *data = dev_get_drvdata(dev); 1025 long val; 1026 u8 reg; 1027 1028 /* 1029 * This check can go away if we ever support automatic fan speed 1030 * control on newer chips. 1031 */ 1032 if (!has_old_autopwm(data)) { 1033 dev_notice(dev, "Mapping change disabled for safety reasons\n"); 1034 return -EINVAL; 1035 } 1036 1037 if (kstrtol(buf, 10, &val) < 0) 1038 return -EINVAL; 1039 1040 switch (val) { 1041 case (1 << 0): 1042 reg = 0x00; 1043 break; 1044 case (1 << 1): 1045 reg = 0x01; 1046 break; 1047 case (1 << 2): 1048 reg = 0x02; 1049 break; 1050 default: 1051 return -EINVAL; 1052 } 1053 1054 mutex_lock(&data->update_lock); 1055 data->pwm_temp_map[nr] = reg; 1056 /* 1057 * If we are in automatic mode, write the temp mapping immediately; 1058 * otherwise, just store it for later use. 1059 */ 1060 if (data->pwm_ctrl[nr] & 0x80) { 1061 data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; 1062 it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); 1063 } 1064 mutex_unlock(&data->update_lock); 1065 return count; 1066 } 1067 1068 static ssize_t show_auto_pwm(struct device *dev, 1069 struct device_attribute *attr, char *buf) 1070 { 1071 struct it87_data *data = it87_update_device(dev); 1072 struct sensor_device_attribute_2 *sensor_attr = 1073 to_sensor_dev_attr_2(attr); 1074 int nr = sensor_attr->nr; 1075 int point = sensor_attr->index; 1076 1077 return sprintf(buf, "%d\n", 1078 pwm_from_reg(data, data->auto_pwm[nr][point])); 1079 } 1080 1081 static ssize_t set_auto_pwm(struct device *dev, 1082 struct device_attribute *attr, const char *buf, size_t count) 1083 { 1084 struct it87_data *data = dev_get_drvdata(dev); 1085 struct sensor_device_attribute_2 *sensor_attr = 1086 to_sensor_dev_attr_2(attr); 1087 int nr = sensor_attr->nr; 1088 int point = sensor_attr->index; 1089 long val; 1090 1091 if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) 1092 return -EINVAL; 1093 1094 mutex_lock(&data->update_lock); 1095 data->auto_pwm[nr][point] = pwm_to_reg(data, val); 1096 it87_write_value(data, IT87_REG_AUTO_PWM(nr, point), 1097 data->auto_pwm[nr][point]); 1098 mutex_unlock(&data->update_lock); 1099 return count; 1100 } 1101 1102 static ssize_t show_auto_temp(struct device *dev, 1103 struct device_attribute *attr, char *buf) 1104 { 1105 struct it87_data *data = it87_update_device(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 1111 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point])); 1112 } 1113 1114 static ssize_t set_auto_temp(struct device *dev, 1115 struct device_attribute *attr, const char *buf, size_t count) 1116 { 1117 struct it87_data *data = dev_get_drvdata(dev); 1118 struct sensor_device_attribute_2 *sensor_attr = 1119 to_sensor_dev_attr_2(attr); 1120 int nr = sensor_attr->nr; 1121 int point = sensor_attr->index; 1122 long val; 1123 1124 if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000) 1125 return -EINVAL; 1126 1127 mutex_lock(&data->update_lock); 1128 data->auto_temp[nr][point] = TEMP_TO_REG(val); 1129 it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), 1130 data->auto_temp[nr][point]); 1131 mutex_unlock(&data->update_lock); 1132 return count; 1133 } 1134 1135 static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0); 1136 static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1137 0, 1); 1138 static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div, 1139 set_fan_div, 0); 1140 1141 static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0); 1142 static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1143 1, 1); 1144 static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div, 1145 set_fan_div, 1); 1146 1147 static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0); 1148 static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1149 2, 1); 1150 static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div, 1151 set_fan_div, 2); 1152 1153 static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0); 1154 static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1155 3, 1); 1156 1157 static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0); 1158 static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan, 1159 4, 1); 1160 1161 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, 1162 show_pwm_enable, set_pwm_enable, 0); 1163 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0); 1164 static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq); 1165 static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR, 1166 show_pwm_temp_map, set_pwm_temp_map, 0); 1167 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, 1168 show_auto_pwm, set_auto_pwm, 0, 0); 1169 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, 1170 show_auto_pwm, set_auto_pwm, 0, 1); 1171 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR, 1172 show_auto_pwm, set_auto_pwm, 0, 2); 1173 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO, 1174 show_auto_pwm, NULL, 0, 3); 1175 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR, 1176 show_auto_temp, set_auto_temp, 0, 1); 1177 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, 1178 show_auto_temp, set_auto_temp, 0, 0); 1179 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR, 1180 show_auto_temp, set_auto_temp, 0, 2); 1181 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR, 1182 show_auto_temp, set_auto_temp, 0, 3); 1183 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR, 1184 show_auto_temp, set_auto_temp, 0, 4); 1185 1186 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, 1187 show_pwm_enable, set_pwm_enable, 1); 1188 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1); 1189 static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL); 1190 static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR, 1191 show_pwm_temp_map, set_pwm_temp_map, 1); 1192 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, 1193 show_auto_pwm, set_auto_pwm, 1, 0); 1194 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, 1195 show_auto_pwm, set_auto_pwm, 1, 1); 1196 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR, 1197 show_auto_pwm, set_auto_pwm, 1, 2); 1198 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO, 1199 show_auto_pwm, NULL, 1, 3); 1200 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR, 1201 show_auto_temp, set_auto_temp, 1, 1); 1202 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, 1203 show_auto_temp, set_auto_temp, 1, 0); 1204 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR, 1205 show_auto_temp, set_auto_temp, 1, 2); 1206 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR, 1207 show_auto_temp, set_auto_temp, 1, 3); 1208 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR, 1209 show_auto_temp, set_auto_temp, 1, 4); 1210 1211 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, 1212 show_pwm_enable, set_pwm_enable, 2); 1213 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2); 1214 static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL); 1215 static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR, 1216 show_pwm_temp_map, set_pwm_temp_map, 2); 1217 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, 1218 show_auto_pwm, set_auto_pwm, 2, 0); 1219 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, 1220 show_auto_pwm, set_auto_pwm, 2, 1); 1221 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR, 1222 show_auto_pwm, set_auto_pwm, 2, 2); 1223 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO, 1224 show_auto_pwm, NULL, 2, 3); 1225 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR, 1226 show_auto_temp, set_auto_temp, 2, 1); 1227 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, 1228 show_auto_temp, set_auto_temp, 2, 0); 1229 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR, 1230 show_auto_temp, set_auto_temp, 2, 2); 1231 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR, 1232 show_auto_temp, set_auto_temp, 2, 3); 1233 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR, 1234 show_auto_temp, set_auto_temp, 2, 4); 1235 1236 /* Alarms */ 1237 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, 1238 char *buf) 1239 { 1240 struct it87_data *data = it87_update_device(dev); 1241 return sprintf(buf, "%u\n", data->alarms); 1242 } 1243 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 1244 1245 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 1246 char *buf) 1247 { 1248 int bitnr = to_sensor_dev_attr(attr)->index; 1249 struct it87_data *data = it87_update_device(dev); 1250 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 1251 } 1252 1253 static ssize_t clear_intrusion(struct device *dev, struct device_attribute 1254 *attr, const char *buf, size_t count) 1255 { 1256 struct it87_data *data = dev_get_drvdata(dev); 1257 long val; 1258 int config; 1259 1260 if (kstrtol(buf, 10, &val) < 0 || val != 0) 1261 return -EINVAL; 1262 1263 mutex_lock(&data->update_lock); 1264 config = it87_read_value(data, IT87_REG_CONFIG); 1265 if (config < 0) { 1266 count = config; 1267 } else { 1268 config |= 1 << 5; 1269 it87_write_value(data, IT87_REG_CONFIG, config); 1270 /* Invalidate cache to force re-read */ 1271 data->valid = 0; 1272 } 1273 mutex_unlock(&data->update_lock); 1274 1275 return count; 1276 } 1277 1278 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); 1279 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); 1280 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); 1281 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11); 1282 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12); 1283 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13); 1284 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14); 1285 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15); 1286 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0); 1287 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1); 1288 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2); 1289 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3); 1290 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); 1291 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); 1292 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); 1293 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); 1294 static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR, 1295 show_alarm, clear_intrusion, 4); 1296 1297 static ssize_t show_beep(struct device *dev, struct device_attribute *attr, 1298 char *buf) 1299 { 1300 int bitnr = to_sensor_dev_attr(attr)->index; 1301 struct it87_data *data = it87_update_device(dev); 1302 return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1); 1303 } 1304 static ssize_t set_beep(struct device *dev, struct device_attribute *attr, 1305 const char *buf, size_t count) 1306 { 1307 int bitnr = to_sensor_dev_attr(attr)->index; 1308 struct it87_data *data = dev_get_drvdata(dev); 1309 long val; 1310 1311 if (kstrtol(buf, 10, &val) < 0 1312 || (val != 0 && val != 1)) 1313 return -EINVAL; 1314 1315 mutex_lock(&data->update_lock); 1316 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 1317 if (val) 1318 data->beeps |= (1 << bitnr); 1319 else 1320 data->beeps &= ~(1 << bitnr); 1321 it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps); 1322 mutex_unlock(&data->update_lock); 1323 return count; 1324 } 1325 1326 static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, 1327 show_beep, set_beep, 1); 1328 static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1); 1329 static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1); 1330 static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1); 1331 static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1); 1332 static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1); 1333 static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1); 1334 static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1); 1335 /* fanX_beep writability is set later */ 1336 static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0); 1337 static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0); 1338 static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0); 1339 static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0); 1340 static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0); 1341 static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, 1342 show_beep, set_beep, 2); 1343 static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2); 1344 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2); 1345 1346 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, 1347 char *buf) 1348 { 1349 struct it87_data *data = dev_get_drvdata(dev); 1350 return sprintf(buf, "%u\n", data->vrm); 1351 } 1352 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, 1353 const char *buf, size_t count) 1354 { 1355 struct it87_data *data = dev_get_drvdata(dev); 1356 unsigned long val; 1357 1358 if (kstrtoul(buf, 10, &val) < 0) 1359 return -EINVAL; 1360 1361 data->vrm = val; 1362 1363 return count; 1364 } 1365 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 1366 1367 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, 1368 char *buf) 1369 { 1370 struct it87_data *data = it87_update_device(dev); 1371 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); 1372 } 1373 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 1374 1375 static ssize_t show_label(struct device *dev, struct device_attribute *attr, 1376 char *buf) 1377 { 1378 static const char * const labels[] = { 1379 "+5V", 1380 "5VSB", 1381 "Vbat", 1382 }; 1383 static const char * const labels_it8721[] = { 1384 "+3.3V", 1385 "3VSB", 1386 "Vbat", 1387 }; 1388 struct it87_data *data = dev_get_drvdata(dev); 1389 int nr = to_sensor_dev_attr(attr)->index; 1390 1391 return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr] 1392 : labels[nr]); 1393 } 1394 static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0); 1395 static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1); 1396 static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2); 1397 1398 static ssize_t show_name(struct device *dev, struct device_attribute 1399 *devattr, char *buf) 1400 { 1401 struct it87_data *data = dev_get_drvdata(dev); 1402 return sprintf(buf, "%s\n", data->name); 1403 } 1404 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); 1405 1406 static struct attribute *it87_attributes_in[9][5] = { 1407 { 1408 &sensor_dev_attr_in0_input.dev_attr.attr, 1409 &sensor_dev_attr_in0_min.dev_attr.attr, 1410 &sensor_dev_attr_in0_max.dev_attr.attr, 1411 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1412 NULL 1413 }, { 1414 &sensor_dev_attr_in1_input.dev_attr.attr, 1415 &sensor_dev_attr_in1_min.dev_attr.attr, 1416 &sensor_dev_attr_in1_max.dev_attr.attr, 1417 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1418 NULL 1419 }, { 1420 &sensor_dev_attr_in2_input.dev_attr.attr, 1421 &sensor_dev_attr_in2_min.dev_attr.attr, 1422 &sensor_dev_attr_in2_max.dev_attr.attr, 1423 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1424 NULL 1425 }, { 1426 &sensor_dev_attr_in3_input.dev_attr.attr, 1427 &sensor_dev_attr_in3_min.dev_attr.attr, 1428 &sensor_dev_attr_in3_max.dev_attr.attr, 1429 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1430 NULL 1431 }, { 1432 &sensor_dev_attr_in4_input.dev_attr.attr, 1433 &sensor_dev_attr_in4_min.dev_attr.attr, 1434 &sensor_dev_attr_in4_max.dev_attr.attr, 1435 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1436 NULL 1437 }, { 1438 &sensor_dev_attr_in5_input.dev_attr.attr, 1439 &sensor_dev_attr_in5_min.dev_attr.attr, 1440 &sensor_dev_attr_in5_max.dev_attr.attr, 1441 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1442 NULL 1443 }, { 1444 &sensor_dev_attr_in6_input.dev_attr.attr, 1445 &sensor_dev_attr_in6_min.dev_attr.attr, 1446 &sensor_dev_attr_in6_max.dev_attr.attr, 1447 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1448 NULL 1449 }, { 1450 &sensor_dev_attr_in7_input.dev_attr.attr, 1451 &sensor_dev_attr_in7_min.dev_attr.attr, 1452 &sensor_dev_attr_in7_max.dev_attr.attr, 1453 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1454 NULL 1455 }, { 1456 &sensor_dev_attr_in8_input.dev_attr.attr, 1457 NULL 1458 } }; 1459 1460 static const struct attribute_group it87_group_in[9] = { 1461 { .attrs = it87_attributes_in[0] }, 1462 { .attrs = it87_attributes_in[1] }, 1463 { .attrs = it87_attributes_in[2] }, 1464 { .attrs = it87_attributes_in[3] }, 1465 { .attrs = it87_attributes_in[4] }, 1466 { .attrs = it87_attributes_in[5] }, 1467 { .attrs = it87_attributes_in[6] }, 1468 { .attrs = it87_attributes_in[7] }, 1469 { .attrs = it87_attributes_in[8] }, 1470 }; 1471 1472 static struct attribute *it87_attributes_temp[3][6] = { 1473 { 1474 &sensor_dev_attr_temp1_input.dev_attr.attr, 1475 &sensor_dev_attr_temp1_max.dev_attr.attr, 1476 &sensor_dev_attr_temp1_min.dev_attr.attr, 1477 &sensor_dev_attr_temp1_type.dev_attr.attr, 1478 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1479 NULL 1480 } , { 1481 &sensor_dev_attr_temp2_input.dev_attr.attr, 1482 &sensor_dev_attr_temp2_max.dev_attr.attr, 1483 &sensor_dev_attr_temp2_min.dev_attr.attr, 1484 &sensor_dev_attr_temp2_type.dev_attr.attr, 1485 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1486 NULL 1487 } , { 1488 &sensor_dev_attr_temp3_input.dev_attr.attr, 1489 &sensor_dev_attr_temp3_max.dev_attr.attr, 1490 &sensor_dev_attr_temp3_min.dev_attr.attr, 1491 &sensor_dev_attr_temp3_type.dev_attr.attr, 1492 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1493 NULL 1494 } }; 1495 1496 static const struct attribute_group it87_group_temp[3] = { 1497 { .attrs = it87_attributes_temp[0] }, 1498 { .attrs = it87_attributes_temp[1] }, 1499 { .attrs = it87_attributes_temp[2] }, 1500 }; 1501 1502 static struct attribute *it87_attributes_temp_offset[] = { 1503 &sensor_dev_attr_temp1_offset.dev_attr.attr, 1504 &sensor_dev_attr_temp2_offset.dev_attr.attr, 1505 &sensor_dev_attr_temp3_offset.dev_attr.attr, 1506 }; 1507 1508 static struct attribute *it87_attributes[] = { 1509 &dev_attr_alarms.attr, 1510 &sensor_dev_attr_intrusion0_alarm.dev_attr.attr, 1511 &dev_attr_name.attr, 1512 NULL 1513 }; 1514 1515 static const struct attribute_group it87_group = { 1516 .attrs = it87_attributes, 1517 }; 1518 1519 static struct attribute *it87_attributes_in_beep[] = { 1520 &sensor_dev_attr_in0_beep.dev_attr.attr, 1521 &sensor_dev_attr_in1_beep.dev_attr.attr, 1522 &sensor_dev_attr_in2_beep.dev_attr.attr, 1523 &sensor_dev_attr_in3_beep.dev_attr.attr, 1524 &sensor_dev_attr_in4_beep.dev_attr.attr, 1525 &sensor_dev_attr_in5_beep.dev_attr.attr, 1526 &sensor_dev_attr_in6_beep.dev_attr.attr, 1527 &sensor_dev_attr_in7_beep.dev_attr.attr, 1528 NULL 1529 }; 1530 1531 static struct attribute *it87_attributes_temp_beep[] = { 1532 &sensor_dev_attr_temp1_beep.dev_attr.attr, 1533 &sensor_dev_attr_temp2_beep.dev_attr.attr, 1534 &sensor_dev_attr_temp3_beep.dev_attr.attr, 1535 }; 1536 1537 static struct attribute *it87_attributes_fan[5][3+1] = { { 1538 &sensor_dev_attr_fan1_input.dev_attr.attr, 1539 &sensor_dev_attr_fan1_min.dev_attr.attr, 1540 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1541 NULL 1542 }, { 1543 &sensor_dev_attr_fan2_input.dev_attr.attr, 1544 &sensor_dev_attr_fan2_min.dev_attr.attr, 1545 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1546 NULL 1547 }, { 1548 &sensor_dev_attr_fan3_input.dev_attr.attr, 1549 &sensor_dev_attr_fan3_min.dev_attr.attr, 1550 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1551 NULL 1552 }, { 1553 &sensor_dev_attr_fan4_input.dev_attr.attr, 1554 &sensor_dev_attr_fan4_min.dev_attr.attr, 1555 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1556 NULL 1557 }, { 1558 &sensor_dev_attr_fan5_input.dev_attr.attr, 1559 &sensor_dev_attr_fan5_min.dev_attr.attr, 1560 &sensor_dev_attr_fan5_alarm.dev_attr.attr, 1561 NULL 1562 } }; 1563 1564 static const struct attribute_group it87_group_fan[5] = { 1565 { .attrs = it87_attributes_fan[0] }, 1566 { .attrs = it87_attributes_fan[1] }, 1567 { .attrs = it87_attributes_fan[2] }, 1568 { .attrs = it87_attributes_fan[3] }, 1569 { .attrs = it87_attributes_fan[4] }, 1570 }; 1571 1572 static const struct attribute *it87_attributes_fan_div[] = { 1573 &sensor_dev_attr_fan1_div.dev_attr.attr, 1574 &sensor_dev_attr_fan2_div.dev_attr.attr, 1575 &sensor_dev_attr_fan3_div.dev_attr.attr, 1576 }; 1577 1578 static struct attribute *it87_attributes_pwm[3][4+1] = { { 1579 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1580 &sensor_dev_attr_pwm1.dev_attr.attr, 1581 &dev_attr_pwm1_freq.attr, 1582 &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, 1583 NULL 1584 }, { 1585 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1586 &sensor_dev_attr_pwm2.dev_attr.attr, 1587 &dev_attr_pwm2_freq.attr, 1588 &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, 1589 NULL 1590 }, { 1591 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1592 &sensor_dev_attr_pwm3.dev_attr.attr, 1593 &dev_attr_pwm3_freq.attr, 1594 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, 1595 NULL 1596 } }; 1597 1598 static const struct attribute_group it87_group_pwm[3] = { 1599 { .attrs = it87_attributes_pwm[0] }, 1600 { .attrs = it87_attributes_pwm[1] }, 1601 { .attrs = it87_attributes_pwm[2] }, 1602 }; 1603 1604 static struct attribute *it87_attributes_autopwm[3][9+1] = { { 1605 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 1606 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 1607 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, 1608 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, 1609 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, 1610 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, 1611 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, 1612 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, 1613 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, 1614 NULL 1615 }, { 1616 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, 1617 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, 1618 &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, 1619 &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, 1620 &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, 1621 &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr, 1622 &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, 1623 &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, 1624 &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, 1625 NULL 1626 }, { 1627 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, 1628 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, 1629 &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr, 1630 &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr, 1631 &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, 1632 &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr, 1633 &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, 1634 &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr, 1635 &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr, 1636 NULL 1637 } }; 1638 1639 static const struct attribute_group it87_group_autopwm[3] = { 1640 { .attrs = it87_attributes_autopwm[0] }, 1641 { .attrs = it87_attributes_autopwm[1] }, 1642 { .attrs = it87_attributes_autopwm[2] }, 1643 }; 1644 1645 static struct attribute *it87_attributes_fan_beep[] = { 1646 &sensor_dev_attr_fan1_beep.dev_attr.attr, 1647 &sensor_dev_attr_fan2_beep.dev_attr.attr, 1648 &sensor_dev_attr_fan3_beep.dev_attr.attr, 1649 &sensor_dev_attr_fan4_beep.dev_attr.attr, 1650 &sensor_dev_attr_fan5_beep.dev_attr.attr, 1651 }; 1652 1653 static struct attribute *it87_attributes_vid[] = { 1654 &dev_attr_vrm.attr, 1655 &dev_attr_cpu0_vid.attr, 1656 NULL 1657 }; 1658 1659 static const struct attribute_group it87_group_vid = { 1660 .attrs = it87_attributes_vid, 1661 }; 1662 1663 static struct attribute *it87_attributes_label[] = { 1664 &sensor_dev_attr_in3_label.dev_attr.attr, 1665 &sensor_dev_attr_in7_label.dev_attr.attr, 1666 &sensor_dev_attr_in8_label.dev_attr.attr, 1667 NULL 1668 }; 1669 1670 static const struct attribute_group it87_group_label = { 1671 .attrs = it87_attributes_label, 1672 }; 1673 1674 /* SuperIO detection - will change isa_address if a chip is found */ 1675 static int __init it87_find(unsigned short *address, 1676 struct it87_sio_data *sio_data) 1677 { 1678 int err; 1679 u16 chip_type; 1680 const char *board_vendor, *board_name; 1681 1682 err = superio_enter(); 1683 if (err) 1684 return err; 1685 1686 err = -ENODEV; 1687 chip_type = force_id ? force_id : superio_inw(DEVID); 1688 1689 switch (chip_type) { 1690 case IT8705F_DEVID: 1691 sio_data->type = it87; 1692 break; 1693 case IT8712F_DEVID: 1694 sio_data->type = it8712; 1695 break; 1696 case IT8716F_DEVID: 1697 case IT8726F_DEVID: 1698 sio_data->type = it8716; 1699 break; 1700 case IT8718F_DEVID: 1701 sio_data->type = it8718; 1702 break; 1703 case IT8720F_DEVID: 1704 sio_data->type = it8720; 1705 break; 1706 case IT8721F_DEVID: 1707 sio_data->type = it8721; 1708 break; 1709 case IT8728F_DEVID: 1710 sio_data->type = it8728; 1711 break; 1712 case IT8782F_DEVID: 1713 sio_data->type = it8782; 1714 break; 1715 case IT8783E_DEVID: 1716 sio_data->type = it8783; 1717 break; 1718 case 0xffff: /* No device at all */ 1719 goto exit; 1720 default: 1721 pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type); 1722 goto exit; 1723 } 1724 1725 superio_select(PME); 1726 if (!(superio_inb(IT87_ACT_REG) & 0x01)) { 1727 pr_info("Device not activated, skipping\n"); 1728 goto exit; 1729 } 1730 1731 *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); 1732 if (*address == 0) { 1733 pr_info("Base address not set, skipping\n"); 1734 goto exit; 1735 } 1736 1737 err = 0; 1738 sio_data->revision = superio_inb(DEVREV) & 0x0f; 1739 pr_info("Found IT%04xF chip at 0x%x, revision %d\n", 1740 chip_type, *address, sio_data->revision); 1741 1742 /* in8 (Vbat) is always internal */ 1743 sio_data->internal = (1 << 2); 1744 1745 /* Read GPIO config and VID value from LDN 7 (GPIO) */ 1746 if (sio_data->type == it87) { 1747 /* The IT8705F doesn't have VID pins at all */ 1748 sio_data->skip_vid = 1; 1749 1750 /* The IT8705F has a different LD number for GPIO */ 1751 superio_select(5); 1752 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1753 } else if (sio_data->type == it8783) { 1754 int reg25, reg27, reg2A, reg2C, regEF; 1755 1756 sio_data->skip_vid = 1; /* No VID */ 1757 1758 superio_select(GPIO); 1759 1760 reg25 = superio_inb(IT87_SIO_GPIO1_REG); 1761 reg27 = superio_inb(IT87_SIO_GPIO3_REG); 1762 reg2A = superio_inb(IT87_SIO_PINX1_REG); 1763 reg2C = superio_inb(IT87_SIO_PINX2_REG); 1764 regEF = superio_inb(IT87_SIO_SPI_REG); 1765 1766 /* Check if fan3 is there or not */ 1767 if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2))) 1768 sio_data->skip_fan |= (1 << 2); 1769 if ((reg25 & (1 << 4)) 1770 || (!(reg2A & (1 << 1)) && (regEF & (1 << 0)))) 1771 sio_data->skip_pwm |= (1 << 2); 1772 1773 /* Check if fan2 is there or not */ 1774 if (reg27 & (1 << 7)) 1775 sio_data->skip_fan |= (1 << 1); 1776 if (reg27 & (1 << 3)) 1777 sio_data->skip_pwm |= (1 << 1); 1778 1779 /* VIN5 */ 1780 if ((reg27 & (1 << 0)) || (reg2C & (1 << 2))) 1781 sio_data->skip_in |= (1 << 5); /* No VIN5 */ 1782 1783 /* VIN6 */ 1784 if (reg27 & (1 << 1)) 1785 sio_data->skip_in |= (1 << 6); /* No VIN6 */ 1786 1787 /* 1788 * VIN7 1789 * Does not depend on bit 2 of Reg2C, contrary to datasheet. 1790 */ 1791 if (reg27 & (1 << 2)) { 1792 /* 1793 * The data sheet is a bit unclear regarding the 1794 * internal voltage divider for VCCH5V. It says 1795 * "This bit enables and switches VIN7 (pin 91) to the 1796 * internal voltage divider for VCCH5V". 1797 * This is different to other chips, where the internal 1798 * voltage divider would connect VIN7 to an internal 1799 * voltage source. Maybe that is the case here as well. 1800 * 1801 * Since we don't know for sure, re-route it if that is 1802 * not the case, and ask the user to report if the 1803 * resulting voltage is sane. 1804 */ 1805 if (!(reg2C & (1 << 1))) { 1806 reg2C |= (1 << 1); 1807 superio_outb(IT87_SIO_PINX2_REG, reg2C); 1808 pr_notice("Routing internal VCCH5V to in7.\n"); 1809 } 1810 pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n"); 1811 pr_notice("Please report if it displays a reasonable voltage.\n"); 1812 } 1813 1814 if (reg2C & (1 << 0)) 1815 sio_data->internal |= (1 << 0); 1816 if (reg2C & (1 << 1)) 1817 sio_data->internal |= (1 << 1); 1818 1819 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1820 1821 } else { 1822 int reg; 1823 bool uart6; 1824 1825 superio_select(GPIO); 1826 1827 reg = superio_inb(IT87_SIO_GPIO3_REG); 1828 if (sio_data->type == it8721 || sio_data->type == it8728 || 1829 sio_data->type == it8782) { 1830 /* 1831 * IT8721F/IT8758E, and IT8782F don't have VID pins 1832 * at all, not sure about the IT8728F. 1833 */ 1834 sio_data->skip_vid = 1; 1835 } else { 1836 /* We need at least 4 VID pins */ 1837 if (reg & 0x0f) { 1838 pr_info("VID is disabled (pins used for GPIO)\n"); 1839 sio_data->skip_vid = 1; 1840 } 1841 } 1842 1843 /* Check if fan3 is there or not */ 1844 if (reg & (1 << 6)) 1845 sio_data->skip_pwm |= (1 << 2); 1846 if (reg & (1 << 7)) 1847 sio_data->skip_fan |= (1 << 2); 1848 1849 /* Check if fan2 is there or not */ 1850 reg = superio_inb(IT87_SIO_GPIO5_REG); 1851 if (reg & (1 << 1)) 1852 sio_data->skip_pwm |= (1 << 1); 1853 if (reg & (1 << 2)) 1854 sio_data->skip_fan |= (1 << 1); 1855 1856 if ((sio_data->type == it8718 || sio_data->type == it8720) 1857 && !(sio_data->skip_vid)) 1858 sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); 1859 1860 reg = superio_inb(IT87_SIO_PINX2_REG); 1861 1862 uart6 = sio_data->type == it8782 && (reg & (1 << 2)); 1863 1864 /* 1865 * The IT8720F has no VIN7 pin, so VCCH should always be 1866 * routed internally to VIN7 with an internal divider. 1867 * Curiously, there still is a configuration bit to control 1868 * this, which means it can be set incorrectly. And even 1869 * more curiously, many boards out there are improperly 1870 * configured, even though the IT8720F datasheet claims 1871 * that the internal routing of VCCH to VIN7 is the default 1872 * setting. So we force the internal routing in this case. 1873 * 1874 * On IT8782F, VIN7 is multiplexed with one of the UART6 pins. 1875 * If UART6 is enabled, re-route VIN7 to the internal divider 1876 * if that is not already the case. 1877 */ 1878 if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) { 1879 reg |= (1 << 1); 1880 superio_outb(IT87_SIO_PINX2_REG, reg); 1881 pr_notice("Routing internal VCCH to in7\n"); 1882 } 1883 if (reg & (1 << 0)) 1884 sio_data->internal |= (1 << 0); 1885 if ((reg & (1 << 1)) || sio_data->type == it8721 || 1886 sio_data->type == it8728) 1887 sio_data->internal |= (1 << 1); 1888 1889 /* 1890 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7. 1891 * While VIN7 can be routed to the internal voltage divider, 1892 * VIN5 and VIN6 are not available if UART6 is enabled. 1893 * 1894 * Also, temp3 is not available if UART6 is enabled and TEMPIN3 1895 * is the temperature source. Since we can not read the 1896 * temperature source here, skip_temp is preliminary. 1897 */ 1898 if (uart6) { 1899 sio_data->skip_in |= (1 << 5) | (1 << 6); 1900 sio_data->skip_temp |= (1 << 2); 1901 } 1902 1903 sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; 1904 } 1905 if (sio_data->beep_pin) 1906 pr_info("Beeping is supported\n"); 1907 1908 /* Disable specific features based on DMI strings */ 1909 board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); 1910 board_name = dmi_get_system_info(DMI_BOARD_NAME); 1911 if (board_vendor && board_name) { 1912 if (strcmp(board_vendor, "nVIDIA") == 0 1913 && strcmp(board_name, "FN68PT") == 0) { 1914 /* 1915 * On the Shuttle SN68PT, FAN_CTL2 is apparently not 1916 * connected to a fan, but to something else. One user 1917 * has reported instant system power-off when changing 1918 * the PWM2 duty cycle, so we disable it. 1919 * I use the board name string as the trigger in case 1920 * the same board is ever used in other systems. 1921 */ 1922 pr_info("Disabling pwm2 due to hardware constraints\n"); 1923 sio_data->skip_pwm = (1 << 1); 1924 } 1925 } 1926 1927 exit: 1928 superio_exit(); 1929 return err; 1930 } 1931 1932 static void it87_remove_files(struct device *dev) 1933 { 1934 struct it87_data *data = platform_get_drvdata(pdev); 1935 struct it87_sio_data *sio_data = dev->platform_data; 1936 int i; 1937 1938 sysfs_remove_group(&dev->kobj, &it87_group); 1939 for (i = 0; i < 9; i++) { 1940 if (sio_data->skip_in & (1 << i)) 1941 continue; 1942 sysfs_remove_group(&dev->kobj, &it87_group_in[i]); 1943 if (it87_attributes_in_beep[i]) 1944 sysfs_remove_file(&dev->kobj, 1945 it87_attributes_in_beep[i]); 1946 } 1947 for (i = 0; i < 3; i++) { 1948 if (!(data->has_temp & (1 << i))) 1949 continue; 1950 sysfs_remove_group(&dev->kobj, &it87_group_temp[i]); 1951 if (has_temp_offset(data)) 1952 sysfs_remove_file(&dev->kobj, 1953 it87_attributes_temp_offset[i]); 1954 if (sio_data->beep_pin) 1955 sysfs_remove_file(&dev->kobj, 1956 it87_attributes_temp_beep[i]); 1957 } 1958 for (i = 0; i < 5; i++) { 1959 if (!(data->has_fan & (1 << i))) 1960 continue; 1961 sysfs_remove_group(&dev->kobj, &it87_group_fan[i]); 1962 if (sio_data->beep_pin) 1963 sysfs_remove_file(&dev->kobj, 1964 it87_attributes_fan_beep[i]); 1965 if (i < 3 && !has_16bit_fans(data)) 1966 sysfs_remove_file(&dev->kobj, 1967 it87_attributes_fan_div[i]); 1968 } 1969 for (i = 0; i < 3; i++) { 1970 if (sio_data->skip_pwm & (1 << 0)) 1971 continue; 1972 sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]); 1973 if (has_old_autopwm(data)) 1974 sysfs_remove_group(&dev->kobj, 1975 &it87_group_autopwm[i]); 1976 } 1977 if (!sio_data->skip_vid) 1978 sysfs_remove_group(&dev->kobj, &it87_group_vid); 1979 sysfs_remove_group(&dev->kobj, &it87_group_label); 1980 } 1981 1982 static int it87_probe(struct platform_device *pdev) 1983 { 1984 struct it87_data *data; 1985 struct resource *res; 1986 struct device *dev = &pdev->dev; 1987 struct it87_sio_data *sio_data = dev->platform_data; 1988 int err = 0, i; 1989 int enable_pwm_interface; 1990 int fan_beep_need_rw; 1991 1992 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 1993 if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT, 1994 DRVNAME)) { 1995 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", 1996 (unsigned long)res->start, 1997 (unsigned long)(res->start + IT87_EC_EXTENT - 1)); 1998 return -EBUSY; 1999 } 2000 2001 data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL); 2002 if (!data) 2003 return -ENOMEM; 2004 2005 data->addr = res->start; 2006 data->type = sio_data->type; 2007 data->features = it87_devices[sio_data->type].features; 2008 data->peci_mask = it87_devices[sio_data->type].peci_mask; 2009 data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask; 2010 data->name = it87_devices[sio_data->type].name; 2011 /* 2012 * IT8705F Datasheet 0.4.1, 3h == Version G. 2013 * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J. 2014 * These are the first revisions with 16-bit tachometer support. 2015 */ 2016 switch (data->type) { 2017 case it87: 2018 if (sio_data->revision >= 0x03) { 2019 data->features &= ~FEAT_OLD_AUTOPWM; 2020 data->features |= FEAT_16BIT_FANS; 2021 } 2022 break; 2023 case it8712: 2024 if (sio_data->revision >= 0x08) { 2025 data->features &= ~FEAT_OLD_AUTOPWM; 2026 data->features |= FEAT_16BIT_FANS; 2027 } 2028 break; 2029 default: 2030 break; 2031 } 2032 2033 /* Now, we do the remaining detection. */ 2034 if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) 2035 || it87_read_value(data, IT87_REG_CHIPID) != 0x90) 2036 return -ENODEV; 2037 2038 platform_set_drvdata(pdev, data); 2039 2040 mutex_init(&data->update_lock); 2041 2042 /* Check PWM configuration */ 2043 enable_pwm_interface = it87_check_pwm(dev); 2044 2045 /* Starting with IT8721F, we handle scaling of internal voltages */ 2046 if (has_12mv_adc(data)) { 2047 if (sio_data->internal & (1 << 0)) 2048 data->in_scaled |= (1 << 3); /* in3 is AVCC */ 2049 if (sio_data->internal & (1 << 1)) 2050 data->in_scaled |= (1 << 7); /* in7 is VSB */ 2051 if (sio_data->internal & (1 << 2)) 2052 data->in_scaled |= (1 << 8); /* in8 is Vbat */ 2053 } else if (sio_data->type == it8782 || sio_data->type == it8783) { 2054 if (sio_data->internal & (1 << 0)) 2055 data->in_scaled |= (1 << 3); /* in3 is VCC5V */ 2056 if (sio_data->internal & (1 << 1)) 2057 data->in_scaled |= (1 << 7); /* in7 is VCCH5V */ 2058 } 2059 2060 data->has_temp = 0x07; 2061 if (sio_data->skip_temp & (1 << 2)) { 2062 if (sio_data->type == it8782 2063 && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80)) 2064 data->has_temp &= ~(1 << 2); 2065 } 2066 2067 /* Initialize the IT87 chip */ 2068 it87_init_device(pdev); 2069 2070 /* Register sysfs hooks */ 2071 err = sysfs_create_group(&dev->kobj, &it87_group); 2072 if (err) 2073 return err; 2074 2075 for (i = 0; i < 9; i++) { 2076 if (sio_data->skip_in & (1 << i)) 2077 continue; 2078 err = sysfs_create_group(&dev->kobj, &it87_group_in[i]); 2079 if (err) 2080 goto error; 2081 if (sio_data->beep_pin && it87_attributes_in_beep[i]) { 2082 err = sysfs_create_file(&dev->kobj, 2083 it87_attributes_in_beep[i]); 2084 if (err) 2085 goto error; 2086 } 2087 } 2088 2089 for (i = 0; i < 3; i++) { 2090 if (!(data->has_temp & (1 << i))) 2091 continue; 2092 err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]); 2093 if (err) 2094 goto error; 2095 if (has_temp_offset(data)) { 2096 err = sysfs_create_file(&dev->kobj, 2097 it87_attributes_temp_offset[i]); 2098 if (err) 2099 goto error; 2100 } 2101 if (sio_data->beep_pin) { 2102 err = sysfs_create_file(&dev->kobj, 2103 it87_attributes_temp_beep[i]); 2104 if (err) 2105 goto error; 2106 } 2107 } 2108 2109 /* Do not create fan files for disabled fans */ 2110 fan_beep_need_rw = 1; 2111 for (i = 0; i < 5; i++) { 2112 if (!(data->has_fan & (1 << i))) 2113 continue; 2114 err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]); 2115 if (err) 2116 goto error; 2117 2118 if (i < 3 && !has_16bit_fans(data)) { 2119 err = sysfs_create_file(&dev->kobj, 2120 it87_attributes_fan_div[i]); 2121 if (err) 2122 goto error; 2123 } 2124 2125 if (sio_data->beep_pin) { 2126 err = sysfs_create_file(&dev->kobj, 2127 it87_attributes_fan_beep[i]); 2128 if (err) 2129 goto error; 2130 if (!fan_beep_need_rw) 2131 continue; 2132 2133 /* 2134 * As we have a single beep enable bit for all fans, 2135 * only the first enabled fan has a writable attribute 2136 * for it. 2137 */ 2138 if (sysfs_chmod_file(&dev->kobj, 2139 it87_attributes_fan_beep[i], 2140 S_IRUGO | S_IWUSR)) 2141 dev_dbg(dev, "chmod +w fan%d_beep failed\n", 2142 i + 1); 2143 fan_beep_need_rw = 0; 2144 } 2145 } 2146 2147 if (enable_pwm_interface) { 2148 for (i = 0; i < 3; i++) { 2149 if (sio_data->skip_pwm & (1 << i)) 2150 continue; 2151 err = sysfs_create_group(&dev->kobj, 2152 &it87_group_pwm[i]); 2153 if (err) 2154 goto error; 2155 2156 if (!has_old_autopwm(data)) 2157 continue; 2158 err = sysfs_create_group(&dev->kobj, 2159 &it87_group_autopwm[i]); 2160 if (err) 2161 goto error; 2162 } 2163 } 2164 2165 if (!sio_data->skip_vid) { 2166 data->vrm = vid_which_vrm(); 2167 /* VID reading from Super-I/O config space if available */ 2168 data->vid = sio_data->vid_value; 2169 err = sysfs_create_group(&dev->kobj, &it87_group_vid); 2170 if (err) 2171 goto error; 2172 } 2173 2174 /* Export labels for internal sensors */ 2175 for (i = 0; i < 3; i++) { 2176 if (!(sio_data->internal & (1 << i))) 2177 continue; 2178 err = sysfs_create_file(&dev->kobj, 2179 it87_attributes_label[i]); 2180 if (err) 2181 goto error; 2182 } 2183 2184 data->hwmon_dev = hwmon_device_register(dev); 2185 if (IS_ERR(data->hwmon_dev)) { 2186 err = PTR_ERR(data->hwmon_dev); 2187 goto error; 2188 } 2189 2190 return 0; 2191 2192 error: 2193 it87_remove_files(dev); 2194 return err; 2195 } 2196 2197 static int it87_remove(struct platform_device *pdev) 2198 { 2199 struct it87_data *data = platform_get_drvdata(pdev); 2200 2201 hwmon_device_unregister(data->hwmon_dev); 2202 it87_remove_files(&pdev->dev); 2203 2204 return 0; 2205 } 2206 2207 /* 2208 * Must be called with data->update_lock held, except during initialization. 2209 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 2210 * would slow down the IT87 access and should not be necessary. 2211 */ 2212 static int it87_read_value(struct it87_data *data, u8 reg) 2213 { 2214 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 2215 return inb_p(data->addr + IT87_DATA_REG_OFFSET); 2216 } 2217 2218 /* 2219 * Must be called with data->update_lock held, except during initialization. 2220 * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, 2221 * would slow down the IT87 access and should not be necessary. 2222 */ 2223 static void it87_write_value(struct it87_data *data, u8 reg, u8 value) 2224 { 2225 outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); 2226 outb_p(value, data->addr + IT87_DATA_REG_OFFSET); 2227 } 2228 2229 /* Return 1 if and only if the PWM interface is safe to use */ 2230 static int it87_check_pwm(struct device *dev) 2231 { 2232 struct it87_data *data = dev_get_drvdata(dev); 2233 /* 2234 * Some BIOSes fail to correctly configure the IT87 fans. All fans off 2235 * and polarity set to active low is sign that this is the case so we 2236 * disable pwm control to protect the user. 2237 */ 2238 int tmp = it87_read_value(data, IT87_REG_FAN_CTL); 2239 if ((tmp & 0x87) == 0) { 2240 if (fix_pwm_polarity) { 2241 /* 2242 * The user asks us to attempt a chip reconfiguration. 2243 * This means switching to active high polarity and 2244 * inverting all fan speed values. 2245 */ 2246 int i; 2247 u8 pwm[3]; 2248 2249 for (i = 0; i < 3; i++) 2250 pwm[i] = it87_read_value(data, 2251 IT87_REG_PWM(i)); 2252 2253 /* 2254 * If any fan is in automatic pwm mode, the polarity 2255 * might be correct, as suspicious as it seems, so we 2256 * better don't change anything (but still disable the 2257 * PWM interface). 2258 */ 2259 if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { 2260 dev_info(dev, 2261 "Reconfiguring PWM to active high polarity\n"); 2262 it87_write_value(data, IT87_REG_FAN_CTL, 2263 tmp | 0x87); 2264 for (i = 0; i < 3; i++) 2265 it87_write_value(data, 2266 IT87_REG_PWM(i), 2267 0x7f & ~pwm[i]); 2268 return 1; 2269 } 2270 2271 dev_info(dev, 2272 "PWM configuration is too broken to be fixed\n"); 2273 } 2274 2275 dev_info(dev, 2276 "Detected broken BIOS defaults, disabling PWM interface\n"); 2277 return 0; 2278 } else if (fix_pwm_polarity) { 2279 dev_info(dev, 2280 "PWM configuration looks sane, won't touch\n"); 2281 } 2282 2283 return 1; 2284 } 2285 2286 /* Called when we have found a new IT87. */ 2287 static void it87_init_device(struct platform_device *pdev) 2288 { 2289 struct it87_sio_data *sio_data = pdev->dev.platform_data; 2290 struct it87_data *data = platform_get_drvdata(pdev); 2291 int tmp, i; 2292 u8 mask; 2293 2294 /* 2295 * For each PWM channel: 2296 * - If it is in automatic mode, setting to manual mode should set 2297 * the fan to full speed by default. 2298 * - If it is in manual mode, we need a mapping to temperature 2299 * channels to use when later setting to automatic mode later. 2300 * Use a 1:1 mapping by default (we are clueless.) 2301 * In both cases, the value can (and should) be changed by the user 2302 * prior to switching to a different mode. 2303 * Note that this is no longer needed for the IT8721F and later, as 2304 * these have separate registers for the temperature mapping and the 2305 * manual duty cycle. 2306 */ 2307 for (i = 0; i < 3; i++) { 2308 data->pwm_temp_map[i] = i; 2309 data->pwm_duty[i] = 0x7f; /* Full speed */ 2310 data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */ 2311 } 2312 2313 /* 2314 * Some chips seem to have default value 0xff for all limit 2315 * registers. For low voltage limits it makes no sense and triggers 2316 * alarms, so change to 0 instead. For high temperature limits, it 2317 * means -1 degree C, which surprisingly doesn't trigger an alarm, 2318 * but is still confusing, so change to 127 degrees C. 2319 */ 2320 for (i = 0; i < 8; i++) { 2321 tmp = it87_read_value(data, IT87_REG_VIN_MIN(i)); 2322 if (tmp == 0xff) 2323 it87_write_value(data, IT87_REG_VIN_MIN(i), 0); 2324 } 2325 for (i = 0; i < 3; i++) { 2326 tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 2327 if (tmp == 0xff) 2328 it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); 2329 } 2330 2331 /* 2332 * Temperature channels are not forcibly enabled, as they can be 2333 * set to two different sensor types and we can't guess which one 2334 * is correct for a given system. These channels can be enabled at 2335 * run-time through the temp{1-3}_type sysfs accessors if needed. 2336 */ 2337 2338 /* Check if voltage monitors are reset manually or by some reason */ 2339 tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); 2340 if ((tmp & 0xff) == 0) { 2341 /* Enable all voltage monitors */ 2342 it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); 2343 } 2344 2345 /* Check if tachometers are reset manually or by some reason */ 2346 mask = 0x70 & ~(sio_data->skip_fan << 4); 2347 data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); 2348 if ((data->fan_main_ctrl & mask) == 0) { 2349 /* Enable all fan tachometers */ 2350 data->fan_main_ctrl |= mask; 2351 it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, 2352 data->fan_main_ctrl); 2353 } 2354 data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; 2355 2356 /* Set tachometers to 16-bit mode if needed */ 2357 if (has_16bit_fans(data)) { 2358 tmp = it87_read_value(data, IT87_REG_FAN_16BIT); 2359 if (~tmp & 0x07 & data->has_fan) { 2360 dev_dbg(&pdev->dev, 2361 "Setting fan1-3 to 16-bit mode\n"); 2362 it87_write_value(data, IT87_REG_FAN_16BIT, 2363 tmp | 0x07); 2364 } 2365 /* IT8705F, IT8782F, and IT8783E/F only support three fans. */ 2366 if (data->type != it87 && data->type != it8782 && 2367 data->type != it8783) { 2368 if (tmp & (1 << 4)) 2369 data->has_fan |= (1 << 3); /* fan4 enabled */ 2370 if (tmp & (1 << 5)) 2371 data->has_fan |= (1 << 4); /* fan5 enabled */ 2372 } 2373 } 2374 2375 /* Fan input pins may be used for alternative functions */ 2376 data->has_fan &= ~sio_data->skip_fan; 2377 2378 /* Start monitoring */ 2379 it87_write_value(data, IT87_REG_CONFIG, 2380 (it87_read_value(data, IT87_REG_CONFIG) & 0x3e) 2381 | (update_vbat ? 0x41 : 0x01)); 2382 } 2383 2384 static void it87_update_pwm_ctrl(struct it87_data *data, int nr) 2385 { 2386 data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr)); 2387 if (has_newer_autopwm(data)) { 2388 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; 2389 data->pwm_duty[nr] = it87_read_value(data, 2390 IT87_REG_PWM_DUTY(nr)); 2391 } else { 2392 if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ 2393 data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; 2394 else /* Manual mode */ 2395 data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f; 2396 } 2397 2398 if (has_old_autopwm(data)) { 2399 int i; 2400 2401 for (i = 0; i < 5 ; i++) 2402 data->auto_temp[nr][i] = it87_read_value(data, 2403 IT87_REG_AUTO_TEMP(nr, i)); 2404 for (i = 0; i < 3 ; i++) 2405 data->auto_pwm[nr][i] = it87_read_value(data, 2406 IT87_REG_AUTO_PWM(nr, i)); 2407 } 2408 } 2409 2410 static struct it87_data *it87_update_device(struct device *dev) 2411 { 2412 struct it87_data *data = dev_get_drvdata(dev); 2413 int i; 2414 2415 mutex_lock(&data->update_lock); 2416 2417 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 2418 || !data->valid) { 2419 if (update_vbat) { 2420 /* 2421 * Cleared after each update, so reenable. Value 2422 * returned by this read will be previous value 2423 */ 2424 it87_write_value(data, IT87_REG_CONFIG, 2425 it87_read_value(data, IT87_REG_CONFIG) | 0x40); 2426 } 2427 for (i = 0; i <= 7; i++) { 2428 data->in[i][0] = 2429 it87_read_value(data, IT87_REG_VIN(i)); 2430 data->in[i][1] = 2431 it87_read_value(data, IT87_REG_VIN_MIN(i)); 2432 data->in[i][2] = 2433 it87_read_value(data, IT87_REG_VIN_MAX(i)); 2434 } 2435 /* in8 (battery) has no limit registers */ 2436 data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8)); 2437 2438 for (i = 0; i < 5; i++) { 2439 /* Skip disabled fans */ 2440 if (!(data->has_fan & (1 << i))) 2441 continue; 2442 2443 data->fan[i][1] = 2444 it87_read_value(data, IT87_REG_FAN_MIN[i]); 2445 data->fan[i][0] = it87_read_value(data, 2446 IT87_REG_FAN[i]); 2447 /* Add high byte if in 16-bit mode */ 2448 if (has_16bit_fans(data)) { 2449 data->fan[i][0] |= it87_read_value(data, 2450 IT87_REG_FANX[i]) << 8; 2451 data->fan[i][1] |= it87_read_value(data, 2452 IT87_REG_FANX_MIN[i]) << 8; 2453 } 2454 } 2455 for (i = 0; i < 3; i++) { 2456 if (!(data->has_temp & (1 << i))) 2457 continue; 2458 data->temp[i][0] = 2459 it87_read_value(data, IT87_REG_TEMP(i)); 2460 data->temp[i][1] = 2461 it87_read_value(data, IT87_REG_TEMP_LOW(i)); 2462 data->temp[i][2] = 2463 it87_read_value(data, IT87_REG_TEMP_HIGH(i)); 2464 if (has_temp_offset(data)) 2465 data->temp[i][3] = 2466 it87_read_value(data, 2467 IT87_REG_TEMP_OFFSET[i]); 2468 } 2469 2470 /* Newer chips don't have clock dividers */ 2471 if ((data->has_fan & 0x07) && !has_16bit_fans(data)) { 2472 i = it87_read_value(data, IT87_REG_FAN_DIV); 2473 data->fan_div[0] = i & 0x07; 2474 data->fan_div[1] = (i >> 3) & 0x07; 2475 data->fan_div[2] = (i & 0x40) ? 3 : 1; 2476 } 2477 2478 data->alarms = 2479 it87_read_value(data, IT87_REG_ALARM1) | 2480 (it87_read_value(data, IT87_REG_ALARM2) << 8) | 2481 (it87_read_value(data, IT87_REG_ALARM3) << 16); 2482 data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); 2483 2484 data->fan_main_ctrl = it87_read_value(data, 2485 IT87_REG_FAN_MAIN_CTRL); 2486 data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); 2487 for (i = 0; i < 3; i++) 2488 it87_update_pwm_ctrl(data, i); 2489 2490 data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); 2491 data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA); 2492 /* 2493 * The IT8705F does not have VID capability. 2494 * The IT8718F and later don't use IT87_REG_VID for the 2495 * same purpose. 2496 */ 2497 if (data->type == it8712 || data->type == it8716) { 2498 data->vid = it87_read_value(data, IT87_REG_VID); 2499 /* 2500 * The older IT8712F revisions had only 5 VID pins, 2501 * but we assume it is always safe to read 6 bits. 2502 */ 2503 data->vid &= 0x3f; 2504 } 2505 data->last_updated = jiffies; 2506 data->valid = 1; 2507 } 2508 2509 mutex_unlock(&data->update_lock); 2510 2511 return data; 2512 } 2513 2514 static int __init it87_device_add(unsigned short address, 2515 const struct it87_sio_data *sio_data) 2516 { 2517 struct resource res = { 2518 .start = address + IT87_EC_OFFSET, 2519 .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, 2520 .name = DRVNAME, 2521 .flags = IORESOURCE_IO, 2522 }; 2523 int err; 2524 2525 err = acpi_check_resource_conflict(&res); 2526 if (err) 2527 goto exit; 2528 2529 pdev = platform_device_alloc(DRVNAME, address); 2530 if (!pdev) { 2531 err = -ENOMEM; 2532 pr_err("Device allocation failed\n"); 2533 goto exit; 2534 } 2535 2536 err = platform_device_add_resources(pdev, &res, 1); 2537 if (err) { 2538 pr_err("Device resource addition failed (%d)\n", err); 2539 goto exit_device_put; 2540 } 2541 2542 err = platform_device_add_data(pdev, sio_data, 2543 sizeof(struct it87_sio_data)); 2544 if (err) { 2545 pr_err("Platform data allocation failed\n"); 2546 goto exit_device_put; 2547 } 2548 2549 err = platform_device_add(pdev); 2550 if (err) { 2551 pr_err("Device addition failed (%d)\n", err); 2552 goto exit_device_put; 2553 } 2554 2555 return 0; 2556 2557 exit_device_put: 2558 platform_device_put(pdev); 2559 exit: 2560 return err; 2561 } 2562 2563 static int __init sm_it87_init(void) 2564 { 2565 int err; 2566 unsigned short isa_address = 0; 2567 struct it87_sio_data sio_data; 2568 2569 memset(&sio_data, 0, sizeof(struct it87_sio_data)); 2570 err = it87_find(&isa_address, &sio_data); 2571 if (err) 2572 return err; 2573 err = platform_driver_register(&it87_driver); 2574 if (err) 2575 return err; 2576 2577 err = it87_device_add(isa_address, &sio_data); 2578 if (err) { 2579 platform_driver_unregister(&it87_driver); 2580 return err; 2581 } 2582 2583 return 0; 2584 } 2585 2586 static void __exit sm_it87_exit(void) 2587 { 2588 platform_device_unregister(pdev); 2589 platform_driver_unregister(&it87_driver); 2590 } 2591 2592 2593 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <khali@linux-fr.org>"); 2594 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver"); 2595 module_param(update_vbat, bool, 0); 2596 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); 2597 module_param(fix_pwm_polarity, bool, 0); 2598 MODULE_PARM_DESC(fix_pwm_polarity, 2599 "Force PWM polarity to active high (DANGEROUS)"); 2600 MODULE_LICENSE("GPL"); 2601 2602 module_init(sm_it87_init); 2603 module_exit(sm_it87_exit); 2604