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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 | // SPDX-License-Identifier: GPL-2.0-or-later /* * sis5595.c - Part of lm_sensors, Linux kernel modules * for hardware monitoring * * Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>, * Kyösti Mälkki <kmalkki@cc.hut.fi>, and * Mark D. Studebaker <mdsxyz123@yahoo.com> * Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with * the help of Jean Delvare <jdelvare@suse.de> */ /* * SiS southbridge has a LM78-like chip integrated on the same IC. * This driver is a customized copy of lm78.c * * Supports following revisions: * Version PCI ID PCI Revision * 1 1039/0008 AF or less * 2 1039/0008 B0 or greater * * Note: these chips contain a 0008 device which is incompatible with the * 5595. We recognize these by the presence of the listed * "blacklist" PCI ID and refuse to load. * * NOT SUPPORTED PCI ID BLACKLIST PCI ID * 540 0008 0540 * 550 0008 0550 * 5513 0008 5511 * 5581 0008 5597 * 5582 0008 5597 * 5597 0008 5597 * 5598 0008 5597/5598 * 630 0008 0630 * 645 0008 0645 * 730 0008 0730 * 735 0008 0735 */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/slab.h> #include <linux/ioport.h> #include <linux/pci.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/err.h> #include <linux/init.h> #include <linux/jiffies.h> #include <linux/mutex.h> #include <linux/sysfs.h> #include <linux/acpi.h> #include <linux/io.h> /* * If force_addr is set to anything different from 0, we forcibly enable * the device at the given address. */ static u16 force_addr; module_param(force_addr, ushort, 0); MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors"); static struct platform_device *pdev; /* Many SIS5595 constants specified below */ /* Length of ISA address segment */ #define SIS5595_EXTENT 8 /* PCI Config Registers */ #define SIS5595_BASE_REG 0x68 #define SIS5595_PIN_REG 0x7A #define SIS5595_ENABLE_REG 0x7B /* Where are the ISA address/data registers relative to the base address */ #define SIS5595_ADDR_REG_OFFSET 5 #define SIS5595_DATA_REG_OFFSET 6 /* The SIS5595 registers */ #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) #define SIS5595_REG_IN(nr) (0x20 + (nr)) #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) #define SIS5595_REG_FAN(nr) (0x28 + (nr)) /* * On the first version of the chip, the temp registers are separate. * On the second version, * TEMP pin is shared with IN4, configured in PCI register 0x7A. * The registers are the same as well. * OVER and HYST are really MAX and MIN. */ #define REV2MIN 0xb0 #define SIS5595_REG_TEMP (((data->revision) >= REV2MIN) ? \ SIS5595_REG_IN(4) : 0x27) #define SIS5595_REG_TEMP_OVER (((data->revision) >= REV2MIN) ? \ SIS5595_REG_IN_MAX(4) : 0x39) #define SIS5595_REG_TEMP_HYST (((data->revision) >= REV2MIN) ? \ SIS5595_REG_IN_MIN(4) : 0x3a) #define SIS5595_REG_CONFIG 0x40 #define SIS5595_REG_ALARM1 0x41 #define SIS5595_REG_ALARM2 0x42 #define SIS5595_REG_FANDIV 0x47 /* * Conversions. Limit checking is only done on the TO_REG * variants. */ /* * IN: mV, (0V to 4.08V) * REG: 16mV/bit */ static inline u8 IN_TO_REG(unsigned long val) { unsigned long nval = clamp_val(val, 0, 4080); return (nval + 8) / 16; } #define IN_FROM_REG(val) ((val) * 16) static inline u8 FAN_TO_REG(long rpm, int div) { if (rpm <= 0) return 255; if (rpm > 1350000) return 1; return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); } static inline int FAN_FROM_REG(u8 val, int div) { return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div); } /* * TEMP: mC (-54.12C to +157.53C) * REG: 0.83C/bit + 52.12, two's complement */ static inline int TEMP_FROM_REG(s8 val) { return val * 830 + 52120; } static inline s8 TEMP_TO_REG(long val) { int nval = clamp_val(val, -54120, 157530) ; return nval < 0 ? (nval - 5212 - 415) / 830 : (nval - 5212 + 415) / 830; } /* * FAN DIV: 1, 2, 4, or 8 (defaults to 2) * REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */ static inline u8 DIV_TO_REG(int val) { return val == 8 ? 3 : val == 4 ? 2 : val == 1 ? 0 : 1; } #define DIV_FROM_REG(val) (1 << (val)) /* * For each registered chip, we need to keep some data in memory. * The structure is dynamically allocated. */ struct sis5595_data { unsigned short addr; const char *name; struct device *hwmon_dev; struct mutex lock; struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ char maxins; /* == 3 if temp enabled, otherwise == 4 */ u8 revision; /* Reg. value */ u8 in[5]; /* Register value */ u8 in_max[5]; /* Register value */ u8 in_min[5]; /* Register value */ u8 fan[2]; /* Register value */ u8 fan_min[2]; /* Register value */ s8 temp; /* Register value */ s8 temp_over; /* Register value */ s8 temp_hyst; /* Register value */ u8 fan_div[2]; /* Register encoding, shifted right */ u16 alarms; /* Register encoding, combined */ }; static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ static int sis5595_probe(struct platform_device *pdev); static int sis5595_remove(struct platform_device *pdev); static int sis5595_read_value(struct sis5595_data *data, u8 reg); static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value); static struct sis5595_data *sis5595_update_device(struct device *dev); static void sis5595_init_device(struct sis5595_data *data); static struct platform_driver sis5595_driver = { .driver = { .name = "sis5595", }, .probe = sis5595_probe, .remove = sis5595_remove, }; /* 4 Voltages */ static ssize_t in_show(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); } static ssize_t in_min_show(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); } static ssize_t in_max_show(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); } static ssize_t in_min_store(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); data->in_min[nr] = IN_TO_REG(val); sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t in_max_store(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); data->in_max[nr] = IN_TO_REG(val); sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); mutex_unlock(&data->update_lock); return count; } static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0); static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1); static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2); static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3); static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4); static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); /* Temperature */ static ssize_t temp1_input_show(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); } static ssize_t temp1_max_show(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); } static ssize_t temp1_max_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); long val; int err; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); data->temp_over = TEMP_TO_REG(val); sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over); mutex_unlock(&data->update_lock); return count; } static ssize_t temp1_max_hyst_show(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); } static ssize_t temp1_max_hyst_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); long val; int err; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); data->temp_hyst = TEMP_TO_REG(val); sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst); mutex_unlock(&data->update_lock); return count; } static DEVICE_ATTR_RO(temp1_input); static DEVICE_ATTR_RW(temp1_max); static DEVICE_ATTR_RW(temp1_max_hyst); /* 2 Fans */ static ssize_t fan_show(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], DIV_FROM_REG(data->fan_div[nr]))); } static ssize_t fan_min_show(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]))); } static ssize_t fan_min_store(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); mutex_unlock(&data->update_lock); return count; } static ssize_t fan_div_show(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); } /* * Note: we save and restore the fan minimum here, because its value is * determined in part by the fan divisor. This follows the principle of * least surprise; the user doesn't expect the fan minimum to change just * because the divisor changed. */ static ssize_t fan_div_store(struct device *dev, struct device_attribute *da, const char *buf, size_t count) { struct sis5595_data *data = dev_get_drvdata(dev); struct sensor_device_attribute *attr = to_sensor_dev_attr(da); int nr = attr->index; unsigned long min; int reg; unsigned long val; int err; err = kstrtoul(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); reg = sis5595_read_value(data, SIS5595_REG_FANDIV); switch (val) { case 1: data->fan_div[nr] = 0; break; case 2: data->fan_div[nr] = 1; break; case 4: data->fan_div[nr] = 2; break; case 8: data->fan_div[nr] = 3; break; default: dev_err(dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", val); mutex_unlock(&data->update_lock); return -EINVAL; } switch (nr) { case 0: reg = (reg & 0xcf) | (data->fan_div[nr] << 4); break; case 1: reg = (reg & 0x3f) | (data->fan_div[nr] << 6); break; } sis5595_write_value(data, SIS5595_REG_FANDIV, reg); data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); mutex_unlock(&data->update_lock); return count; } static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0); static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); /* Alarms */ static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); return sprintf(buf, "%d\n", data->alarms); } static DEVICE_ATTR_RO(alarms); static ssize_t alarm_show(struct device *dev, struct device_attribute *da, char *buf) { struct sis5595_data *data = sis5595_update_device(dev); int nr = to_sensor_dev_attr(da)->index; return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); } static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 15); static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6); static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7); static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 15); static ssize_t name_show(struct device *dev, struct device_attribute *attr, char *buf) { struct sis5595_data *data = dev_get_drvdata(dev); return sprintf(buf, "%s\n", data->name); } static DEVICE_ATTR_RO(name); static struct attribute *sis5595_attributes[] = { &sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in0_min.dev_attr.attr, &sensor_dev_attr_in0_max.dev_attr.attr, &sensor_dev_attr_in0_alarm.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in1_min.dev_attr.attr, &sensor_dev_attr_in1_max.dev_attr.attr, &sensor_dev_attr_in1_alarm.dev_attr.attr, &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_in2_min.dev_attr.attr, &sensor_dev_attr_in2_max.dev_attr.attr, &sensor_dev_attr_in2_alarm.dev_attr.attr, &sensor_dev_attr_in3_input.dev_attr.attr, &sensor_dev_attr_in3_min.dev_attr.attr, &sensor_dev_attr_in3_max.dev_attr.attr, &sensor_dev_attr_in3_alarm.dev_attr.attr, &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan1_div.dev_attr.attr, &sensor_dev_attr_fan1_alarm.dev_attr.attr, &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan2_div.dev_attr.attr, &sensor_dev_attr_fan2_alarm.dev_attr.attr, &dev_attr_alarms.attr, &dev_attr_name.attr, NULL }; static const struct attribute_group sis5595_group = { .attrs = sis5595_attributes, }; static struct attribute *sis5595_attributes_in4[] = { &sensor_dev_attr_in4_input.dev_attr.attr, &sensor_dev_attr_in4_min.dev_attr.attr, &sensor_dev_attr_in4_max.dev_attr.attr, &sensor_dev_attr_in4_alarm.dev_attr.attr, NULL }; static const struct attribute_group sis5595_group_in4 = { .attrs = sis5595_attributes_in4, }; static struct attribute *sis5595_attributes_temp1[] = { &dev_attr_temp1_input.attr, &dev_attr_temp1_max.attr, &dev_attr_temp1_max_hyst.attr, &sensor_dev_attr_temp1_alarm.dev_attr.attr, NULL }; static const struct attribute_group sis5595_group_temp1 = { .attrs = sis5595_attributes_temp1, }; /* This is called when the module is loaded */ static int sis5595_probe(struct platform_device *pdev) { int err = 0; int i; struct sis5595_data *data; struct resource *res; char val; /* Reserve the ISA region */ res = platform_get_resource(pdev, IORESOURCE_IO, 0); if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT, sis5595_driver.driver.name)) return -EBUSY; data = devm_kzalloc(&pdev->dev, sizeof(struct sis5595_data), GFP_KERNEL); if (!data) return -ENOMEM; mutex_init(&data->lock); mutex_init(&data->update_lock); data->addr = res->start; data->name = "sis5595"; platform_set_drvdata(pdev, data); /* * Check revision and pin registers to determine whether 4 or 5 voltages */ data->revision = s_bridge->revision; /* 4 voltages, 1 temp */ data->maxins = 3; if (data->revision >= REV2MIN) { pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val); if (!(val & 0x80)) /* 5 voltages, no temps */ data->maxins = 4; } /* Initialize the SIS5595 chip */ sis5595_init_device(data); /* A few vars need to be filled upon startup */ for (i = 0; i < 2; i++) { data->fan_min[i] = sis5595_read_value(data, SIS5595_REG_FAN_MIN(i)); } /* Register sysfs hooks */ err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group); if (err) return err; if (data->maxins == 4) { err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_in4); if (err) goto exit_remove_files; } else { err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group_temp1); if (err) goto exit_remove_files; } data->hwmon_dev = hwmon_device_register(&pdev->dev); if (IS_ERR(data->hwmon_dev)) { err = PTR_ERR(data->hwmon_dev); goto exit_remove_files; } return 0; exit_remove_files: sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4); sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1); return err; } static int sis5595_remove(struct platform_device *pdev) { struct sis5595_data *data = platform_get_drvdata(pdev); hwmon_device_unregister(data->hwmon_dev); sysfs_remove_group(&pdev->dev.kobj, &sis5595_group); sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_in4); sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_temp1); return 0; } /* ISA access must be locked explicitly. */ static int sis5595_read_value(struct sis5595_data *data, u8 reg) { int res; mutex_lock(&data->lock); outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET); mutex_unlock(&data->lock); return res; } static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value) { mutex_lock(&data->lock); outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET); outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET); mutex_unlock(&data->lock); } /* Called when we have found a new SIS5595. */ static void sis5595_init_device(struct sis5595_data *data) { u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG); if (!(config & 0x01)) sis5595_write_value(data, SIS5595_REG_CONFIG, (config & 0xf7) | 0x01); } static struct sis5595_data *sis5595_update_device(struct device *dev) { struct sis5595_data *data = dev_get_drvdata(dev); int i; mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || !data->valid) { for (i = 0; i <= data->maxins; i++) { data->in[i] = sis5595_read_value(data, SIS5595_REG_IN(i)); data->in_min[i] = sis5595_read_value(data, SIS5595_REG_IN_MIN(i)); data->in_max[i] = sis5595_read_value(data, SIS5595_REG_IN_MAX(i)); } for (i = 0; i < 2; i++) { data->fan[i] = sis5595_read_value(data, SIS5595_REG_FAN(i)); data->fan_min[i] = sis5595_read_value(data, SIS5595_REG_FAN_MIN(i)); } if (data->maxins == 3) { data->temp = sis5595_read_value(data, SIS5595_REG_TEMP); data->temp_over = sis5595_read_value(data, SIS5595_REG_TEMP_OVER); data->temp_hyst = sis5595_read_value(data, SIS5595_REG_TEMP_HYST); } i = sis5595_read_value(data, SIS5595_REG_FANDIV); data->fan_div[0] = (i >> 4) & 0x03; data->fan_div[1] = i >> 6; data->alarms = sis5595_read_value(data, SIS5595_REG_ALARM1) | (sis5595_read_value(data, SIS5595_REG_ALARM2) << 8); data->last_updated = jiffies; data->valid = 1; } mutex_unlock(&data->update_lock); return data; } static const struct pci_device_id sis5595_pci_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, { 0, } }; MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); static int blacklist[] = { PCI_DEVICE_ID_SI_540, PCI_DEVICE_ID_SI_550, PCI_DEVICE_ID_SI_630, PCI_DEVICE_ID_SI_645, PCI_DEVICE_ID_SI_730, PCI_DEVICE_ID_SI_735, PCI_DEVICE_ID_SI_5511, /* * 5513 chip has the 0008 device but * that ID shows up in other chips so we * use the 5511 ID for recognition */ PCI_DEVICE_ID_SI_5597, PCI_DEVICE_ID_SI_5598, 0 }; static int sis5595_device_add(unsigned short address) { struct resource res = { .start = address, .end = address + SIS5595_EXTENT - 1, .name = "sis5595", .flags = IORESOURCE_IO, }; int err; err = acpi_check_resource_conflict(&res); if (err) goto exit; pdev = platform_device_alloc("sis5595", address); if (!pdev) { err = -ENOMEM; pr_err("Device allocation failed\n"); goto exit; } err = platform_device_add_resources(pdev, &res, 1); if (err) { pr_err("Device resource addition failed (%d)\n", err); goto exit_device_put; } err = platform_device_add(pdev); if (err) { pr_err("Device addition failed (%d)\n", err); goto exit_device_put; } return 0; exit_device_put: platform_device_put(pdev); exit: return err; } static int sis5595_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) { u16 address; u8 enable; int *i; for (i = blacklist; *i != 0; i++) { struct pci_dev *d; d = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL); if (d) { dev_err(&d->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i); pci_dev_put(d); return -ENODEV; } } force_addr &= ~(SIS5595_EXTENT - 1); if (force_addr) { dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr); pci_write_config_word(dev, SIS5595_BASE_REG, force_addr); } if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, SIS5595_BASE_REG, &address)) { dev_err(&dev->dev, "Failed to read ISA address\n"); return -ENODEV; } address &= ~(SIS5595_EXTENT - 1); if (!address) { dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n"); return -ENODEV; } if (force_addr && address != force_addr) { /* doesn't work for some chips? */ dev_err(&dev->dev, "Failed to force ISA address\n"); return -ENODEV; } if (PCIBIOS_SUCCESSFUL != pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) { dev_err(&dev->dev, "Failed to read enable register\n"); return -ENODEV; } if (!(enable & 0x80)) { if ((PCIBIOS_SUCCESSFUL != pci_write_config_byte(dev, SIS5595_ENABLE_REG, enable | 0x80)) || (PCIBIOS_SUCCESSFUL != pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) || (!(enable & 0x80))) { /* doesn't work for some chips! */ dev_err(&dev->dev, "Failed to enable HWM device\n"); return -ENODEV; } } if (platform_driver_register(&sis5595_driver)) { dev_dbg(&dev->dev, "Failed to register sis5595 driver\n"); goto exit; } s_bridge = pci_dev_get(dev); /* Sets global pdev as a side effect */ if (sis5595_device_add(address)) goto exit_unregister; /* * Always return failure here. This is to allow other drivers to bind * to this pci device. We don't really want to have control over the * pci device, we only wanted to read as few register values from it. */ return -ENODEV; exit_unregister: pci_dev_put(dev); platform_driver_unregister(&sis5595_driver); exit: return -ENODEV; } static struct pci_driver sis5595_pci_driver = { .name = "sis5595", .id_table = sis5595_pci_ids, .probe = sis5595_pci_probe, }; static int __init sm_sis5595_init(void) { return pci_register_driver(&sis5595_pci_driver); } static void __exit sm_sis5595_exit(void) { pci_unregister_driver(&sis5595_pci_driver); if (s_bridge != NULL) { platform_device_unregister(pdev); platform_driver_unregister(&sis5595_driver); pci_dev_put(s_bridge); s_bridge = NULL; } } MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>"); MODULE_DESCRIPTION("SiS 5595 Sensor device"); MODULE_LICENSE("GPL"); module_init(sm_sis5595_init); module_exit(sm_sis5595_exit); |