1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * w83627ehf - Driver for the hardware monitoring functionality of 4 * the Winbond W83627EHF Super-I/O chip 5 * Copyright (C) 2005-2012 Jean Delvare <jdelvare@suse.de> 6 * Copyright (C) 2006 Yuan Mu (Winbond), 7 * Rudolf Marek <r.marek@assembler.cz> 8 * David Hubbard <david.c.hubbard@gmail.com> 9 * Daniel J Blueman <daniel.blueman@gmail.com> 10 * Copyright (C) 2010 Sheng-Yuan Huang (Nuvoton) (PS00) 11 * 12 * Shamelessly ripped from the w83627hf driver 13 * Copyright (C) 2003 Mark Studebaker 14 * 15 * Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help 16 * in testing and debugging this driver. 17 * 18 * This driver also supports the W83627EHG, which is the lead-free 19 * version of the W83627EHF. 20 * 21 * Supports the following chips: 22 * 23 * Chip #vin #fan #pwm #temp chip IDs man ID 24 * w83627ehf 10 5 4 3 0x8850 0x88 0x5ca3 25 * 0x8860 0xa1 26 * w83627dhg 9 5 4 3 0xa020 0xc1 0x5ca3 27 * w83627dhg-p 9 5 4 3 0xb070 0xc1 0x5ca3 28 * w83627uhg 8 2 2 3 0xa230 0xc1 0x5ca3 29 * w83667hg 9 5 3 3 0xa510 0xc1 0x5ca3 30 * w83667hg-b 9 5 3 4 0xb350 0xc1 0x5ca3 31 */ 32 33#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 34 35#include <linux/module.h> 36#include <linux/init.h> 37#include <linux/slab.h> 38#include <linux/jiffies.h> 39#include <linux/platform_device.h> 40#include <linux/hwmon.h> 41#include <linux/hwmon-sysfs.h> 42#include <linux/hwmon-vid.h> 43#include <linux/err.h> 44#include <linux/mutex.h> 45#include <linux/acpi.h> 46#include <linux/io.h> 47#include "lm75.h" 48 49enum kinds { 50 w83627ehf, w83627dhg, w83627dhg_p, w83627uhg, 51 w83667hg, w83667hg_b, 52}; 53 54/* used to set data->name = w83627ehf_device_names[data->sio_kind] */ 55static const char * const w83627ehf_device_names[] = { 56 "w83627ehf", 57 "w83627dhg", 58 "w83627dhg", 59 "w83627uhg", 60 "w83667hg", 61 "w83667hg", 62}; 63 64static unsigned short force_id; 65module_param(force_id, ushort, 0); 66MODULE_PARM_DESC(force_id, "Override the detected device ID"); 67 68#define DRVNAME "w83627ehf" 69 70/* 71 * Super-I/O constants and functions 72 */ 73 74#define W83627EHF_LD_HWM 0x0b 75#define W83667HG_LD_VID 0x0d 76 77#define SIO_REG_LDSEL 0x07 /* Logical device select */ 78#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ 79#define SIO_REG_EN_VRM10 0x2C /* GPIO3, GPIO4 selection */ 80#define SIO_REG_ENABLE 0x30 /* Logical device enable */ 81#define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ 82#define SIO_REG_VID_CTRL 0xF0 /* VID control */ 83#define SIO_REG_VID_DATA 0xF1 /* VID data */ 84 85#define SIO_W83627EHF_ID 0x8850 86#define SIO_W83627EHG_ID 0x8860 87#define SIO_W83627DHG_ID 0xa020 88#define SIO_W83627DHG_P_ID 0xb070 89#define SIO_W83627UHG_ID 0xa230 90#define SIO_W83667HG_ID 0xa510 91#define SIO_W83667HG_B_ID 0xb350 92#define SIO_ID_MASK 0xFFF0 93 94static inline void 95superio_outb(int ioreg, int reg, int val) 96{ 97 outb(reg, ioreg); 98 outb(val, ioreg + 1); 99} 100 101static inline int 102superio_inb(int ioreg, int reg) 103{ 104 outb(reg, ioreg); 105 return inb(ioreg + 1); 106} 107 108static inline void 109superio_select(int ioreg, int ld) 110{ 111 outb(SIO_REG_LDSEL, ioreg); 112 outb(ld, ioreg + 1); 113} 114 115static inline int 116superio_enter(int ioreg) 117{ 118 if (!request_muxed_region(ioreg, 2, DRVNAME)) 119 return -EBUSY; 120 121 outb(0x87, ioreg); 122 outb(0x87, ioreg); 123 124 return 0; 125} 126 127static inline void 128superio_exit(int ioreg) 129{ 130 outb(0xaa, ioreg); 131 outb(0x02, ioreg); 132 outb(0x02, ioreg + 1); 133 release_region(ioreg, 2); 134} 135 136/* 137 * ISA constants 138 */ 139 140#define IOREGION_ALIGNMENT (~7) 141#define IOREGION_OFFSET 5 142#define IOREGION_LENGTH 2 143#define ADDR_REG_OFFSET 0 144#define DATA_REG_OFFSET 1 145 146#define W83627EHF_REG_BANK 0x4E 147#define W83627EHF_REG_CONFIG 0x40 148 149/* 150 * Not currently used: 151 * REG_MAN_ID has the value 0x5ca3 for all supported chips. 152 * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model. 153 * REG_MAN_ID is at port 0x4f 154 * REG_CHIP_ID is at port 0x58 155 */ 156 157static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 }; 158static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c }; 159 160/* The W83627EHF registers for nr=7,8,9 are in bank 5 */ 161#define W83627EHF_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \ 162 (0x554 + (((nr) - 7) * 2))) 163#define W83627EHF_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \ 164 (0x555 + (((nr) - 7) * 2))) 165#define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \ 166 (0x550 + (nr) - 7)) 167 168static const u16 W83627EHF_REG_TEMP[] = { 0x27, 0x150, 0x250, 0x7e }; 169static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x3a, 0x153, 0x253, 0 }; 170static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x39, 0x155, 0x255, 0 }; 171static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0, 0x152, 0x252, 0 }; 172 173/* Fan clock dividers are spread over the following five registers */ 174#define W83627EHF_REG_FANDIV1 0x47 175#define W83627EHF_REG_FANDIV2 0x4B 176#define W83627EHF_REG_VBAT 0x5D 177#define W83627EHF_REG_DIODE 0x59 178#define W83627EHF_REG_SMI_OVT 0x4C 179 180#define W83627EHF_REG_ALARM1 0x459 181#define W83627EHF_REG_ALARM2 0x45A 182#define W83627EHF_REG_ALARM3 0x45B 183 184#define W83627EHF_REG_CASEOPEN_DET 0x42 /* SMI STATUS #2 */ 185#define W83627EHF_REG_CASEOPEN_CLR 0x46 /* SMI MASK #3 */ 186 187/* SmartFan registers */ 188#define W83627EHF_REG_FAN_STEPUP_TIME 0x0f 189#define W83627EHF_REG_FAN_STEPDOWN_TIME 0x0e 190 191/* DC or PWM output fan configuration */ 192static const u8 W83627EHF_REG_PWM_ENABLE[] = { 193 0x04, /* SYS FAN0 output mode and PWM mode */ 194 0x04, /* CPU FAN0 output mode and PWM mode */ 195 0x12, /* AUX FAN mode */ 196 0x62, /* CPU FAN1 mode */ 197}; 198 199static const u8 W83627EHF_PWM_MODE_SHIFT[] = { 0, 1, 0, 6 }; 200static const u8 W83627EHF_PWM_ENABLE_SHIFT[] = { 2, 4, 1, 4 }; 201 202/* FAN Duty Cycle, be used to control */ 203static const u16 W83627EHF_REG_PWM[] = { 0x01, 0x03, 0x11, 0x61 }; 204static const u16 W83627EHF_REG_TARGET[] = { 0x05, 0x06, 0x13, 0x63 }; 205static const u8 W83627EHF_REG_TOLERANCE[] = { 0x07, 0x07, 0x14, 0x62 }; 206 207/* Advanced Fan control, some values are common for all fans */ 208static const u16 W83627EHF_REG_FAN_START_OUTPUT[] = { 0x0a, 0x0b, 0x16, 0x65 }; 209static const u16 W83627EHF_REG_FAN_STOP_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 }; 210static const u16 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0c, 0x0d, 0x17, 0x66 }; 211 212static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON[] 213 = { 0xff, 0x67, 0xff, 0x69 }; 214static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON[] 215 = { 0xff, 0x68, 0xff, 0x6a }; 216 217static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B[] = { 0x67, 0x69, 0x6b }; 218static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B[] 219 = { 0x68, 0x6a, 0x6c }; 220 221static const u16 W83627EHF_REG_TEMP_OFFSET[] = { 0x454, 0x455, 0x456 }; 222 223static const char *const w83667hg_b_temp_label[] = { 224 "SYSTIN", 225 "CPUTIN", 226 "AUXTIN", 227 "AMDTSI", 228 "PECI Agent 1", 229 "PECI Agent 2", 230 "PECI Agent 3", 231 "PECI Agent 4" 232}; 233 234#define NUM_REG_TEMP ARRAY_SIZE(W83627EHF_REG_TEMP) 235 236static int is_word_sized(u16 reg) 237{ 238 return ((((reg & 0xff00) == 0x100 239 || (reg & 0xff00) == 0x200) 240 && ((reg & 0x00ff) == 0x50 241 || (reg & 0x00ff) == 0x53 242 || (reg & 0x00ff) == 0x55)) 243 || (reg & 0xfff0) == 0x630 244 || reg == 0x640 || reg == 0x642 245 || ((reg & 0xfff0) == 0x650 246 && (reg & 0x000f) >= 0x06) 247 || reg == 0x73 || reg == 0x75 || reg == 0x77 248 ); 249} 250 251/* 252 * Conversions 253 */ 254 255/* 1 is PWM mode, output in ms */ 256static inline unsigned int step_time_from_reg(u8 reg, u8 mode) 257{ 258 return mode ? 100 * reg : 400 * reg; 259} 260 261static inline u8 step_time_to_reg(unsigned int msec, u8 mode) 262{ 263 return clamp_val((mode ? (msec + 50) / 100 : (msec + 200) / 400), 264 1, 255); 265} 266 267static unsigned int fan_from_reg8(u16 reg, unsigned int divreg) 268{ 269 if (reg == 0 || reg == 255) 270 return 0; 271 return 1350000U / (reg << divreg); 272} 273 274static inline unsigned int 275div_from_reg(u8 reg) 276{ 277 return 1 << reg; 278} 279 280/* 281 * Some of the voltage inputs have internal scaling, the tables below 282 * contain 8 (the ADC LSB in mV) * scaling factor * 100 283 */ 284static const u16 scale_in_common[10] = { 285 800, 800, 1600, 1600, 800, 800, 800, 1600, 1600, 800 286}; 287static const u16 scale_in_w83627uhg[9] = { 288 800, 800, 3328, 3424, 800, 800, 0, 3328, 3400 289}; 290 291static inline long in_from_reg(u8 reg, u8 nr, const u16 *scale_in) 292{ 293 return DIV_ROUND_CLOSEST(reg * scale_in[nr], 100); 294} 295 296static inline u8 in_to_reg(u32 val, u8 nr, const u16 *scale_in) 297{ 298 return clamp_val(DIV_ROUND_CLOSEST(val * 100, scale_in[nr]), 0, 255); 299} 300 301/* 302 * Data structures and manipulation thereof 303 */ 304 305struct w83627ehf_data { 306 int addr; /* IO base of hw monitor block */ 307 const char *name; 308 309 struct mutex lock; 310 311 u16 reg_temp[NUM_REG_TEMP]; 312 u16 reg_temp_over[NUM_REG_TEMP]; 313 u16 reg_temp_hyst[NUM_REG_TEMP]; 314 u16 reg_temp_config[NUM_REG_TEMP]; 315 u8 temp_src[NUM_REG_TEMP]; 316 const char * const *temp_label; 317 318 const u16 *REG_FAN_MAX_OUTPUT; 319 const u16 *REG_FAN_STEP_OUTPUT; 320 const u16 *scale_in; 321 322 struct mutex update_lock; 323 char valid; /* !=0 if following fields are valid */ 324 unsigned long last_updated; /* In jiffies */ 325 326 /* Register values */ 327 u8 bank; /* current register bank */ 328 u8 in_num; /* number of in inputs we have */ 329 u8 in[10]; /* Register value */ 330 u8 in_max[10]; /* Register value */ 331 u8 in_min[10]; /* Register value */ 332 unsigned int rpm[5]; 333 u16 fan_min[5]; 334 u8 fan_div[5]; 335 u8 has_fan; /* some fan inputs can be disabled */ 336 u8 has_fan_min; /* some fans don't have min register */ 337 u8 temp_type[3]; 338 s8 temp_offset[3]; 339 s16 temp[9]; 340 s16 temp_max[9]; 341 s16 temp_max_hyst[9]; 342 u32 alarms; 343 u8 caseopen; 344 345 u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */ 346 u8 pwm_enable[4]; /* 1->manual 347 * 2->thermal cruise mode (also called SmartFan I) 348 * 3->fan speed cruise mode 349 * 4->variable thermal cruise (also called 350 * SmartFan III) 351 * 5->enhanced variable thermal cruise (also called 352 * SmartFan IV) 353 */ 354 u8 pwm_enable_orig[4]; /* original value of pwm_enable */ 355 u8 pwm_num; /* number of pwm */ 356 u8 pwm[4]; 357 u8 target_temp[4]; 358 u8 tolerance[4]; 359 360 u8 fan_start_output[4]; /* minimum fan speed when spinning up */ 361 u8 fan_stop_output[4]; /* minimum fan speed when spinning down */ 362 u8 fan_stop_time[4]; /* time at minimum before disabling fan */ 363 u8 fan_max_output[4]; /* maximum fan speed */ 364 u8 fan_step_output[4]; /* rate of change output value */ 365 366 u8 vid; 367 u8 vrm; 368 369 u16 have_temp; 370 u16 have_temp_offset; 371 u8 in6_skip:1; 372 u8 temp3_val_only:1; 373 u8 have_vid:1; 374 375#ifdef CONFIG_PM 376 /* Remember extra register values over suspend/resume */ 377 u8 vbat; 378 u8 fandiv1; 379 u8 fandiv2; 380#endif 381}; 382 383struct w83627ehf_sio_data { 384 int sioreg; 385 enum kinds kind; 386}; 387 388/* 389 * On older chips, only registers 0x50-0x5f are banked. 390 * On more recent chips, all registers are banked. 391 * Assume that is the case and set the bank number for each access. 392 * Cache the bank number so it only needs to be set if it changes. 393 */ 394static inline void w83627ehf_set_bank(struct w83627ehf_data *data, u16 reg) 395{ 396 u8 bank = reg >> 8; 397 if (data->bank != bank) { 398 outb_p(W83627EHF_REG_BANK, data->addr + ADDR_REG_OFFSET); 399 outb_p(bank, data->addr + DATA_REG_OFFSET); 400 data->bank = bank; 401 } 402} 403 404static u16 w83627ehf_read_value(struct w83627ehf_data *data, u16 reg) 405{ 406 int res, word_sized = is_word_sized(reg); 407 408 mutex_lock(&data->lock); 409 410 w83627ehf_set_bank(data, reg); 411 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET); 412 res = inb_p(data->addr + DATA_REG_OFFSET); 413 if (word_sized) { 414 outb_p((reg & 0xff) + 1, 415 data->addr + ADDR_REG_OFFSET); 416 res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET); 417 } 418 419 mutex_unlock(&data->lock); 420 return res; 421} 422 423static int w83627ehf_write_value(struct w83627ehf_data *data, u16 reg, 424 u16 value) 425{ 426 int word_sized = is_word_sized(reg); 427 428 mutex_lock(&data->lock); 429 430 w83627ehf_set_bank(data, reg); 431 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET); 432 if (word_sized) { 433 outb_p(value >> 8, data->addr + DATA_REG_OFFSET); 434 outb_p((reg & 0xff) + 1, 435 data->addr + ADDR_REG_OFFSET); 436 } 437 outb_p(value & 0xff, data->addr + DATA_REG_OFFSET); 438 439 mutex_unlock(&data->lock); 440 return 0; 441} 442 443/* We left-align 8-bit temperature values to make the code simpler */ 444static u16 w83627ehf_read_temp(struct w83627ehf_data *data, u16 reg) 445{ 446 u16 res; 447 448 res = w83627ehf_read_value(data, reg); 449 if (!is_word_sized(reg)) 450 res <<= 8; 451 452 return res; 453} 454 455static int w83627ehf_write_temp(struct w83627ehf_data *data, u16 reg, 456 u16 value) 457{ 458 if (!is_word_sized(reg)) 459 value >>= 8; 460 return w83627ehf_write_value(data, reg, value); 461} 462 463/* This function assumes that the caller holds data->update_lock */ 464static void w83627ehf_write_fan_div(struct w83627ehf_data *data, int nr) 465{ 466 u8 reg; 467 468 switch (nr) { 469 case 0: 470 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0xcf) 471 | ((data->fan_div[0] & 0x03) << 4); 472 /* fan5 input control bit is write only, compute the value */ 473 reg |= (data->has_fan & (1 << 4)) ? 1 : 0; 474 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg); 475 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xdf) 476 | ((data->fan_div[0] & 0x04) << 3); 477 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg); 478 break; 479 case 1: 480 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0x3f) 481 | ((data->fan_div[1] & 0x03) << 6); 482 /* fan5 input control bit is write only, compute the value */ 483 reg |= (data->has_fan & (1 << 4)) ? 1 : 0; 484 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg); 485 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xbf) 486 | ((data->fan_div[1] & 0x04) << 4); 487 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg); 488 break; 489 case 2: 490 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV2) & 0x3f) 491 | ((data->fan_div[2] & 0x03) << 6); 492 w83627ehf_write_value(data, W83627EHF_REG_FANDIV2, reg); 493 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0x7f) 494 | ((data->fan_div[2] & 0x04) << 5); 495 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg); 496 break; 497 case 3: 498 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0xfc) 499 | (data->fan_div[3] & 0x03); 500 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg); 501 reg = (w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT) & 0x7f) 502 | ((data->fan_div[3] & 0x04) << 5); 503 w83627ehf_write_value(data, W83627EHF_REG_SMI_OVT, reg); 504 break; 505 case 4: 506 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0x73) 507 | ((data->fan_div[4] & 0x03) << 2) 508 | ((data->fan_div[4] & 0x04) << 5); 509 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg); 510 break; 511 } 512} 513 514static void w83627ehf_update_fan_div(struct w83627ehf_data *data) 515{ 516 int i; 517 518 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1); 519 data->fan_div[0] = (i >> 4) & 0x03; 520 data->fan_div[1] = (i >> 6) & 0x03; 521 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV2); 522 data->fan_div[2] = (i >> 6) & 0x03; 523 i = w83627ehf_read_value(data, W83627EHF_REG_VBAT); 524 data->fan_div[0] |= (i >> 3) & 0x04; 525 data->fan_div[1] |= (i >> 4) & 0x04; 526 data->fan_div[2] |= (i >> 5) & 0x04; 527 if (data->has_fan & ((1 << 3) | (1 << 4))) { 528 i = w83627ehf_read_value(data, W83627EHF_REG_DIODE); 529 data->fan_div[3] = i & 0x03; 530 data->fan_div[4] = ((i >> 2) & 0x03) 531 | ((i >> 5) & 0x04); 532 } 533 if (data->has_fan & (1 << 3)) { 534 i = w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT); 535 data->fan_div[3] |= (i >> 5) & 0x04; 536 } 537} 538 539static void w83627ehf_update_pwm(struct w83627ehf_data *data) 540{ 541 int i; 542 int pwmcfg = 0, tolerance = 0; /* shut up the compiler */ 543 544 for (i = 0; i < data->pwm_num; i++) { 545 if (!(data->has_fan & (1 << i))) 546 continue; 547 548 /* pwmcfg, tolerance mapped for i=0, i=1 to same reg */ 549 if (i != 1) { 550 pwmcfg = w83627ehf_read_value(data, 551 W83627EHF_REG_PWM_ENABLE[i]); 552 tolerance = w83627ehf_read_value(data, 553 W83627EHF_REG_TOLERANCE[i]); 554 } 555 data->pwm_mode[i] = 556 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1; 557 data->pwm_enable[i] = ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i]) 558 & 3) + 1; 559 data->pwm[i] = w83627ehf_read_value(data, W83627EHF_REG_PWM[i]); 560 561 data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0)) & 0x0f; 562 } 563} 564 565static struct w83627ehf_data *w83627ehf_update_device(struct device *dev) 566{ 567 struct w83627ehf_data *data = dev_get_drvdata(dev); 568 int i; 569 570 mutex_lock(&data->update_lock); 571 572 if (time_after(jiffies, data->last_updated + HZ + HZ/2) 573 || !data->valid) { 574 /* Fan clock dividers */ 575 w83627ehf_update_fan_div(data); 576 577 /* Measured voltages and limits */ 578 for (i = 0; i < data->in_num; i++) { 579 if ((i == 6) && data->in6_skip) 580 continue; 581 582 data->in[i] = w83627ehf_read_value(data, 583 W83627EHF_REG_IN(i)); 584 data->in_min[i] = w83627ehf_read_value(data, 585 W83627EHF_REG_IN_MIN(i)); 586 data->in_max[i] = w83627ehf_read_value(data, 587 W83627EHF_REG_IN_MAX(i)); 588 } 589 590 /* Measured fan speeds and limits */ 591 for (i = 0; i < 5; i++) { 592 u16 reg; 593 594 if (!(data->has_fan & (1 << i))) 595 continue; 596 597 reg = w83627ehf_read_value(data, W83627EHF_REG_FAN[i]); 598 data->rpm[i] = fan_from_reg8(reg, data->fan_div[i]); 599 600 if (data->has_fan_min & (1 << i)) 601 data->fan_min[i] = w83627ehf_read_value(data, 602 W83627EHF_REG_FAN_MIN[i]); 603 604 /* 605 * If we failed to measure the fan speed and clock 606 * divider can be increased, let's try that for next 607 * time 608 */ 609 if (reg >= 0xff && data->fan_div[i] < 0x07) { 610 dev_dbg(dev, 611 "Increasing fan%d clock divider from %u to %u\n", 612 i + 1, div_from_reg(data->fan_div[i]), 613 div_from_reg(data->fan_div[i] + 1)); 614 data->fan_div[i]++; 615 w83627ehf_write_fan_div(data, i); 616 /* Preserve min limit if possible */ 617 if ((data->has_fan_min & (1 << i)) 618 && data->fan_min[i] >= 2 619 && data->fan_min[i] != 255) 620 w83627ehf_write_value(data, 621 W83627EHF_REG_FAN_MIN[i], 622 (data->fan_min[i] /= 2)); 623 } 624 } 625 626 w83627ehf_update_pwm(data); 627 628 for (i = 0; i < data->pwm_num; i++) { 629 if (!(data->has_fan & (1 << i))) 630 continue; 631 632 data->fan_start_output[i] = 633 w83627ehf_read_value(data, 634 W83627EHF_REG_FAN_START_OUTPUT[i]); 635 data->fan_stop_output[i] = 636 w83627ehf_read_value(data, 637 W83627EHF_REG_FAN_STOP_OUTPUT[i]); 638 data->fan_stop_time[i] = 639 w83627ehf_read_value(data, 640 W83627EHF_REG_FAN_STOP_TIME[i]); 641 642 if (data->REG_FAN_MAX_OUTPUT && 643 data->REG_FAN_MAX_OUTPUT[i] != 0xff) 644 data->fan_max_output[i] = 645 w83627ehf_read_value(data, 646 data->REG_FAN_MAX_OUTPUT[i]); 647 648 if (data->REG_FAN_STEP_OUTPUT && 649 data->REG_FAN_STEP_OUTPUT[i] != 0xff) 650 data->fan_step_output[i] = 651 w83627ehf_read_value(data, 652 data->REG_FAN_STEP_OUTPUT[i]); 653 654 data->target_temp[i] = 655 w83627ehf_read_value(data, 656 W83627EHF_REG_TARGET[i]) & 657 (data->pwm_mode[i] == 1 ? 0x7f : 0xff); 658 } 659 660 /* Measured temperatures and limits */ 661 for (i = 0; i < NUM_REG_TEMP; i++) { 662 if (!(data->have_temp & (1 << i))) 663 continue; 664 data->temp[i] = w83627ehf_read_temp(data, 665 data->reg_temp[i]); 666 if (data->reg_temp_over[i]) 667 data->temp_max[i] 668 = w83627ehf_read_temp(data, 669 data->reg_temp_over[i]); 670 if (data->reg_temp_hyst[i]) 671 data->temp_max_hyst[i] 672 = w83627ehf_read_temp(data, 673 data->reg_temp_hyst[i]); 674 if (i > 2) 675 continue; 676 if (data->have_temp_offset & (1 << i)) 677 data->temp_offset[i] 678 = w83627ehf_read_value(data, 679 W83627EHF_REG_TEMP_OFFSET[i]); 680 } 681 682 data->alarms = w83627ehf_read_value(data, 683 W83627EHF_REG_ALARM1) | 684 (w83627ehf_read_value(data, 685 W83627EHF_REG_ALARM2) << 8) | 686 (w83627ehf_read_value(data, 687 W83627EHF_REG_ALARM3) << 16); 688 689 data->caseopen = w83627ehf_read_value(data, 690 W83627EHF_REG_CASEOPEN_DET); 691 692 data->last_updated = jiffies; 693 data->valid = 1; 694 } 695 696 mutex_unlock(&data->update_lock); 697 return data; 698} 699 700#define store_in_reg(REG, reg) \ 701static int \ 702store_in_##reg(struct device *dev, struct w83627ehf_data *data, int channel, \ 703 long val) \ 704{ \ 705 if (val < 0) \ 706 return -EINVAL; \ 707 mutex_lock(&data->update_lock); \ 708 data->in_##reg[channel] = in_to_reg(val, channel, data->scale_in); \ 709 w83627ehf_write_value(data, W83627EHF_REG_IN_##REG(channel), \ 710 data->in_##reg[channel]); \ 711 mutex_unlock(&data->update_lock); \ 712 return 0; \ 713} 714 715store_in_reg(MIN, min) 716store_in_reg(MAX, max) 717 718static int 719store_fan_min(struct device *dev, struct w83627ehf_data *data, int channel, 720 long val) 721{ 722 unsigned int reg; 723 u8 new_div; 724 725 if (val < 0) 726 return -EINVAL; 727 728 mutex_lock(&data->update_lock); 729 if (!val) { 730 /* No min limit, alarm disabled */ 731 data->fan_min[channel] = 255; 732 new_div = data->fan_div[channel]; /* No change */ 733 dev_info(dev, "fan%u low limit and alarm disabled\n", 734 channel + 1); 735 } else if ((reg = 1350000U / val) >= 128 * 255) { 736 /* 737 * Speed below this value cannot possibly be represented, 738 * even with the highest divider (128) 739 */ 740 data->fan_min[channel] = 254; 741 new_div = 7; /* 128 == (1 << 7) */ 742 dev_warn(dev, 743 "fan%u low limit %lu below minimum %u, set to minimum\n", 744 channel + 1, val, fan_from_reg8(254, 7)); 745 } else if (!reg) { 746 /* 747 * Speed above this value cannot possibly be represented, 748 * even with the lowest divider (1) 749 */ 750 data->fan_min[channel] = 1; 751 new_div = 0; /* 1 == (1 << 0) */ 752 dev_warn(dev, 753 "fan%u low limit %lu above maximum %u, set to maximum\n", 754 channel + 1, val, fan_from_reg8(1, 0)); 755 } else { 756 /* 757 * Automatically pick the best divider, i.e. the one such 758 * that the min limit will correspond to a register value 759 * in the 96..192 range 760 */ 761 new_div = 0; 762 while (reg > 192 && new_div < 7) { 763 reg >>= 1; 764 new_div++; 765 } 766 data->fan_min[channel] = reg; 767 } 768 769 /* 770 * Write both the fan clock divider (if it changed) and the new 771 * fan min (unconditionally) 772 */ 773 if (new_div != data->fan_div[channel]) { 774 dev_dbg(dev, "fan%u clock divider changed from %u to %u\n", 775 channel + 1, div_from_reg(data->fan_div[channel]), 776 div_from_reg(new_div)); 777 data->fan_div[channel] = new_div; 778 w83627ehf_write_fan_div(data, channel); 779 /* Give the chip time to sample a new speed value */ 780 data->last_updated = jiffies; 781 } 782 783 w83627ehf_write_value(data, W83627EHF_REG_FAN_MIN[channel], 784 data->fan_min[channel]); 785 mutex_unlock(&data->update_lock); 786 787 return 0; 788} 789 790#define store_temp_reg(addr, reg) \ 791static int \ 792store_##reg(struct device *dev, struct w83627ehf_data *data, int channel, \ 793 long val) \ 794{ \ 795 mutex_lock(&data->update_lock); \ 796 data->reg[channel] = LM75_TEMP_TO_REG(val); \ 797 w83627ehf_write_temp(data, data->addr[channel], data->reg[channel]); \ 798 mutex_unlock(&data->update_lock); \ 799 return 0; \ 800} 801store_temp_reg(reg_temp_over, temp_max); 802store_temp_reg(reg_temp_hyst, temp_max_hyst); 803 804static int 805store_temp_offset(struct device *dev, struct w83627ehf_data *data, int channel, 806 long val) 807{ 808 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127); 809 810 mutex_lock(&data->update_lock); 811 data->temp_offset[channel] = val; 812 w83627ehf_write_value(data, W83627EHF_REG_TEMP_OFFSET[channel], val); 813 mutex_unlock(&data->update_lock); 814 return 0; 815} 816 817static int 818store_pwm_mode(struct device *dev, struct w83627ehf_data *data, int channel, 819 long val) 820{ 821 u16 reg; 822 823 if (val < 0 || val > 1) 824 return -EINVAL; 825 826 mutex_lock(&data->update_lock); 827 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[channel]); 828 data->pwm_mode[channel] = val; 829 reg &= ~(1 << W83627EHF_PWM_MODE_SHIFT[channel]); 830 if (!val) 831 reg |= 1 << W83627EHF_PWM_MODE_SHIFT[channel]; 832 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[channel], reg); 833 mutex_unlock(&data->update_lock); 834 return 0; 835} 836 837static int 838store_pwm(struct device *dev, struct w83627ehf_data *data, int channel, 839 long val) 840{ 841 val = clamp_val(val, 0, 255); 842 843 mutex_lock(&data->update_lock); 844 data->pwm[channel] = val; 845 w83627ehf_write_value(data, W83627EHF_REG_PWM[channel], val); 846 mutex_unlock(&data->update_lock); 847 return 0; 848} 849 850static int 851store_pwm_enable(struct device *dev, struct w83627ehf_data *data, int channel, 852 long val) 853{ 854 u16 reg; 855 856 if (!val || val < 0 || 857 (val > 4 && val != data->pwm_enable_orig[channel])) 858 return -EINVAL; 859 860 mutex_lock(&data->update_lock); 861 data->pwm_enable[channel] = val; 862 reg = w83627ehf_read_value(data, 863 W83627EHF_REG_PWM_ENABLE[channel]); 864 reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[channel]); 865 reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[channel]; 866 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[channel], 867 reg); 868 mutex_unlock(&data->update_lock); 869 return 0; 870} 871 872#define show_tol_temp(reg) \ 873static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ 874 char *buf) \ 875{ \ 876 struct w83627ehf_data *data = w83627ehf_update_device(dev->parent); \ 877 struct sensor_device_attribute *sensor_attr = \ 878 to_sensor_dev_attr(attr); \ 879 int nr = sensor_attr->index; \ 880 return sprintf(buf, "%d\n", data->reg[nr] * 1000); \ 881} 882 883show_tol_temp(tolerance) 884show_tol_temp(target_temp) 885 886static ssize_t 887store_target_temp(struct device *dev, struct device_attribute *attr, 888 const char *buf, size_t count) 889{ 890 struct w83627ehf_data *data = dev_get_drvdata(dev); 891 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 892 int nr = sensor_attr->index; 893 long val; 894 int err; 895 896 err = kstrtol(buf, 10, &val); 897 if (err < 0) 898 return err; 899 900 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 127); 901 902 mutex_lock(&data->update_lock); 903 data->target_temp[nr] = val; 904 w83627ehf_write_value(data, W83627EHF_REG_TARGET[nr], val); 905 mutex_unlock(&data->update_lock); 906 return count; 907} 908 909static ssize_t 910store_tolerance(struct device *dev, struct device_attribute *attr, 911 const char *buf, size_t count) 912{ 913 struct w83627ehf_data *data = dev_get_drvdata(dev); 914 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 915 int nr = sensor_attr->index; 916 u16 reg; 917 long val; 918 int err; 919 920 err = kstrtol(buf, 10, &val); 921 if (err < 0) 922 return err; 923 924 /* Limit the temp to 0C - 15C */ 925 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 15); 926 927 mutex_lock(&data->update_lock); 928 reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]); 929 if (nr == 1) 930 reg = (reg & 0x0f) | (val << 4); 931 else 932 reg = (reg & 0xf0) | val; 933 w83627ehf_write_value(data, W83627EHF_REG_TOLERANCE[nr], reg); 934 data->tolerance[nr] = val; 935 mutex_unlock(&data->update_lock); 936 return count; 937} 938 939static SENSOR_DEVICE_ATTR(pwm1_target, 0644, show_target_temp, 940 store_target_temp, 0); 941static SENSOR_DEVICE_ATTR(pwm2_target, 0644, show_target_temp, 942 store_target_temp, 1); 943static SENSOR_DEVICE_ATTR(pwm3_target, 0644, show_target_temp, 944 store_target_temp, 2); 945static SENSOR_DEVICE_ATTR(pwm4_target, 0644, show_target_temp, 946 store_target_temp, 3); 947 948static SENSOR_DEVICE_ATTR(pwm1_tolerance, 0644, show_tolerance, 949 store_tolerance, 0); 950static SENSOR_DEVICE_ATTR(pwm2_tolerance, 0644, show_tolerance, 951 store_tolerance, 1); 952static SENSOR_DEVICE_ATTR(pwm3_tolerance, 0644, show_tolerance, 953 store_tolerance, 2); 954static SENSOR_DEVICE_ATTR(pwm4_tolerance, 0644, show_tolerance, 955 store_tolerance, 3); 956 957/* Smart Fan registers */ 958 959#define fan_functions(reg, REG) \ 960static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ 961 char *buf) \ 962{ \ 963 struct w83627ehf_data *data = w83627ehf_update_device(dev->parent); \ 964 struct sensor_device_attribute *sensor_attr = \ 965 to_sensor_dev_attr(attr); \ 966 int nr = sensor_attr->index; \ 967 return sprintf(buf, "%d\n", data->reg[nr]); \ 968} \ 969static ssize_t \ 970store_##reg(struct device *dev, struct device_attribute *attr, \ 971 const char *buf, size_t count) \ 972{ \ 973 struct w83627ehf_data *data = dev_get_drvdata(dev); \ 974 struct sensor_device_attribute *sensor_attr = \ 975 to_sensor_dev_attr(attr); \ 976 int nr = sensor_attr->index; \ 977 unsigned long val; \ 978 int err; \ 979 err = kstrtoul(buf, 10, &val); \ 980 if (err < 0) \ 981 return err; \ 982 val = clamp_val(val, 1, 255); \ 983 mutex_lock(&data->update_lock); \ 984 data->reg[nr] = val; \ 985 w83627ehf_write_value(data, REG[nr], val); \ 986 mutex_unlock(&data->update_lock); \ 987 return count; \ 988} 989 990fan_functions(fan_start_output, W83627EHF_REG_FAN_START_OUTPUT) 991fan_functions(fan_stop_output, W83627EHF_REG_FAN_STOP_OUTPUT) 992fan_functions(fan_max_output, data->REG_FAN_MAX_OUTPUT) 993fan_functions(fan_step_output, data->REG_FAN_STEP_OUTPUT) 994 995#define fan_time_functions(reg, REG) \ 996static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ 997 char *buf) \ 998{ \ 999 struct w83627ehf_data *data = w83627ehf_update_device(dev->parent); \ 1000 struct sensor_device_attribute *sensor_attr = \ 1001 to_sensor_dev_attr(attr); \ 1002 int nr = sensor_attr->index; \ 1003 return sprintf(buf, "%d\n", \ 1004 step_time_from_reg(data->reg[nr], \ 1005 data->pwm_mode[nr])); \ 1006} \ 1007\ 1008static ssize_t \ 1009store_##reg(struct device *dev, struct device_attribute *attr, \ 1010 const char *buf, size_t count) \ 1011{ \ 1012 struct w83627ehf_data *data = dev_get_drvdata(dev); \ 1013 struct sensor_device_attribute *sensor_attr = \ 1014 to_sensor_dev_attr(attr); \ 1015 int nr = sensor_attr->index; \ 1016 unsigned long val; \ 1017 int err; \ 1018 err = kstrtoul(buf, 10, &val); \ 1019 if (err < 0) \ 1020 return err; \ 1021 val = step_time_to_reg(val, data->pwm_mode[nr]); \ 1022 mutex_lock(&data->update_lock); \ 1023 data->reg[nr] = val; \ 1024 w83627ehf_write_value(data, REG[nr], val); \ 1025 mutex_unlock(&data->update_lock); \ 1026 return count; \ 1027} \ 1028 1029fan_time_functions(fan_stop_time, W83627EHF_REG_FAN_STOP_TIME) 1030 1031static SENSOR_DEVICE_ATTR(pwm4_stop_time, 0644, show_fan_stop_time, 1032 store_fan_stop_time, 3); 1033static SENSOR_DEVICE_ATTR(pwm4_start_output, 0644, show_fan_start_output, 1034 store_fan_start_output, 3); 1035static SENSOR_DEVICE_ATTR(pwm4_stop_output, 0644, show_fan_stop_output, 1036 store_fan_stop_output, 3); 1037static SENSOR_DEVICE_ATTR(pwm4_max_output, 0644, show_fan_max_output, 1038 store_fan_max_output, 3); 1039static SENSOR_DEVICE_ATTR(pwm4_step_output, 0644, show_fan_step_output, 1040 store_fan_step_output, 3); 1041 1042static SENSOR_DEVICE_ATTR(pwm3_stop_time, 0644, show_fan_stop_time, 1043 store_fan_stop_time, 2); 1044static SENSOR_DEVICE_ATTR(pwm3_start_output, 0644, show_fan_start_output, 1045 store_fan_start_output, 2); 1046static SENSOR_DEVICE_ATTR(pwm3_stop_output, 0644, show_fan_stop_output, 1047 store_fan_stop_output, 2); 1048 1049static SENSOR_DEVICE_ATTR(pwm1_stop_time, 0644, show_fan_stop_time, 1050 store_fan_stop_time, 0); 1051static SENSOR_DEVICE_ATTR(pwm2_stop_time, 0644, show_fan_stop_time, 1052 store_fan_stop_time, 1); 1053static SENSOR_DEVICE_ATTR(pwm1_start_output, 0644, show_fan_start_output, 1054 store_fan_start_output, 0); 1055static SENSOR_DEVICE_ATTR(pwm2_start_output, 0644, show_fan_start_output, 1056 store_fan_start_output, 1); 1057static SENSOR_DEVICE_ATTR(pwm1_stop_output, 0644, show_fan_stop_output, 1058 store_fan_stop_output, 0); 1059static SENSOR_DEVICE_ATTR(pwm2_stop_output, 0644, show_fan_stop_output, 1060 store_fan_stop_output, 1); 1061 1062 1063/* 1064 * pwm1 and pwm3 don't support max and step settings on all chips. 1065 * Need to check support while generating/removing attribute files. 1066 */ 1067static SENSOR_DEVICE_ATTR(pwm1_max_output, 0644, show_fan_max_output, 1068 store_fan_max_output, 0); 1069static SENSOR_DEVICE_ATTR(pwm1_step_output, 0644, show_fan_step_output, 1070 store_fan_step_output, 0); 1071static SENSOR_DEVICE_ATTR(pwm2_max_output, 0644, show_fan_max_output, 1072 store_fan_max_output, 1); 1073static SENSOR_DEVICE_ATTR(pwm2_step_output, 0644, show_fan_step_output, 1074 store_fan_step_output, 1); 1075static SENSOR_DEVICE_ATTR(pwm3_max_output, 0644, show_fan_max_output, 1076 store_fan_max_output, 2); 1077static SENSOR_DEVICE_ATTR(pwm3_step_output, 0644, show_fan_step_output, 1078 store_fan_step_output, 2); 1079 1080static ssize_t 1081cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf) 1082{ 1083 struct w83627ehf_data *data = dev_get_drvdata(dev); 1084 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 1085} 1086DEVICE_ATTR_RO(cpu0_vid); 1087 1088 1089/* Case open detection */ 1090static int 1091clear_caseopen(struct device *dev, struct w83627ehf_data *data, int channel, 1092 long val) 1093{ 1094 const u16 mask = 0x80; 1095 u16 reg; 1096 1097 if (val != 0 || channel != 0) 1098 return -EINVAL; 1099 1100 mutex_lock(&data->update_lock); 1101 reg = w83627ehf_read_value(data, W83627EHF_REG_CASEOPEN_CLR); 1102 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg | mask); 1103 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg & ~mask); 1104 data->valid = 0; /* Force cache refresh */ 1105 mutex_unlock(&data->update_lock); 1106 1107 return 0; 1108} 1109 1110static umode_t w83627ehf_attrs_visible(struct kobject *kobj, 1111 struct attribute *a, int n) 1112{ 1113 struct device *dev = container_of(kobj, struct device, kobj); 1114 struct w83627ehf_data *data = dev_get_drvdata(dev); 1115 struct device_attribute *devattr; 1116 struct sensor_device_attribute *sda; 1117 1118 devattr = container_of(a, struct device_attribute, attr); 1119 1120 /* Not sensor */ 1121 if (devattr->show == cpu0_vid_show && data->have_vid) 1122 return a->mode; 1123 1124 sda = (struct sensor_device_attribute *)devattr; 1125 1126 if (sda->index < 2 && 1127 (devattr->show == show_fan_stop_time || 1128 devattr->show == show_fan_start_output || 1129 devattr->show == show_fan_stop_output)) 1130 return a->mode; 1131 1132 if (sda->index < 3 && 1133 (devattr->show == show_fan_max_output || 1134 devattr->show == show_fan_step_output) && 1135 data->REG_FAN_STEP_OUTPUT && 1136 data->REG_FAN_STEP_OUTPUT[sda->index] != 0xff) 1137 return a->mode; 1138 1139 /* if fan3 and fan4 are enabled create the files for them */ 1140 if (sda->index == 2 && 1141 (data->has_fan & (1 << 2)) && data->pwm_num >= 3 && 1142 (devattr->show == show_fan_stop_time || 1143 devattr->show == show_fan_start_output || 1144 devattr->show == show_fan_stop_output)) 1145 return a->mode; 1146 1147 if (sda->index == 3 && 1148 (data->has_fan & (1 << 3)) && data->pwm_num >= 4 && 1149 (devattr->show == show_fan_stop_time || 1150 devattr->show == show_fan_start_output || 1151 devattr->show == show_fan_stop_output || 1152 devattr->show == show_fan_max_output || 1153 devattr->show == show_fan_step_output)) 1154 return a->mode; 1155 1156 if ((devattr->show == show_target_temp || 1157 devattr->show == show_tolerance) && 1158 (data->has_fan & (1 << sda->index)) && 1159 sda->index < data->pwm_num) 1160 return a->mode; 1161 1162 return 0; 1163} 1164 1165/* These groups handle non-standard attributes used in this device */ 1166static struct attribute *w83627ehf_attrs[] = { 1167 1168 &sensor_dev_attr_pwm1_stop_time.dev_attr.attr, 1169 &sensor_dev_attr_pwm1_start_output.dev_attr.attr, 1170 &sensor_dev_attr_pwm1_stop_output.dev_attr.attr, 1171 &sensor_dev_attr_pwm1_max_output.dev_attr.attr, 1172 &sensor_dev_attr_pwm1_step_output.dev_attr.attr, 1173 &sensor_dev_attr_pwm1_target.dev_attr.attr, 1174 &sensor_dev_attr_pwm1_tolerance.dev_attr.attr, 1175 1176 &sensor_dev_attr_pwm2_stop_time.dev_attr.attr, 1177 &sensor_dev_attr_pwm2_start_output.dev_attr.attr, 1178 &sensor_dev_attr_pwm2_stop_output.dev_attr.attr, 1179 &sensor_dev_attr_pwm2_max_output.dev_attr.attr, 1180 &sensor_dev_attr_pwm2_step_output.dev_attr.attr, 1181 &sensor_dev_attr_pwm2_target.dev_attr.attr, 1182 &sensor_dev_attr_pwm2_tolerance.dev_attr.attr, 1183 1184 &sensor_dev_attr_pwm3_stop_time.dev_attr.attr, 1185 &sensor_dev_attr_pwm3_start_output.dev_attr.attr, 1186 &sensor_dev_attr_pwm3_stop_output.dev_attr.attr, 1187 &sensor_dev_attr_pwm3_max_output.dev_attr.attr, 1188 &sensor_dev_attr_pwm3_step_output.dev_attr.attr, 1189 &sensor_dev_attr_pwm3_target.dev_attr.attr, 1190 &sensor_dev_attr_pwm3_tolerance.dev_attr.attr, 1191 1192 &sensor_dev_attr_pwm4_stop_time.dev_attr.attr, 1193 &sensor_dev_attr_pwm4_start_output.dev_attr.attr, 1194 &sensor_dev_attr_pwm4_stop_output.dev_attr.attr, 1195 &sensor_dev_attr_pwm4_max_output.dev_attr.attr, 1196 &sensor_dev_attr_pwm4_step_output.dev_attr.attr, 1197 &sensor_dev_attr_pwm4_target.dev_attr.attr, 1198 &sensor_dev_attr_pwm4_tolerance.dev_attr.attr, 1199 1200 &dev_attr_cpu0_vid.attr, 1201 NULL 1202}; 1203 1204static const struct attribute_group w83627ehf_group = { 1205 .attrs = w83627ehf_attrs, 1206 .is_visible = w83627ehf_attrs_visible, 1207}; 1208 1209static const struct attribute_group *w83627ehf_groups[] = { 1210 &w83627ehf_group, 1211 NULL 1212}; 1213 1214/* 1215 * Driver and device management 1216 */ 1217 1218/* Get the monitoring functions started */ 1219static inline void w83627ehf_init_device(struct w83627ehf_data *data, 1220 enum kinds kind) 1221{ 1222 int i; 1223 u8 tmp, diode; 1224 1225 /* Start monitoring is needed */ 1226 tmp = w83627ehf_read_value(data, W83627EHF_REG_CONFIG); 1227 if (!(tmp & 0x01)) 1228 w83627ehf_write_value(data, W83627EHF_REG_CONFIG, 1229 tmp | 0x01); 1230 1231 /* Enable temperature sensors if needed */ 1232 for (i = 0; i < NUM_REG_TEMP; i++) { 1233 if (!(data->have_temp & (1 << i))) 1234 continue; 1235 if (!data->reg_temp_config[i]) 1236 continue; 1237 tmp = w83627ehf_read_value(data, 1238 data->reg_temp_config[i]); 1239 if (tmp & 0x01) 1240 w83627ehf_write_value(data, 1241 data->reg_temp_config[i], 1242 tmp & 0xfe); 1243 } 1244 1245 /* Enable VBAT monitoring if needed */ 1246 tmp = w83627ehf_read_value(data, W83627EHF_REG_VBAT); 1247 if (!(tmp & 0x01)) 1248 w83627ehf_write_value(data, W83627EHF_REG_VBAT, tmp | 0x01); 1249 1250 /* Get thermal sensor types */ 1251 switch (kind) { 1252 case w83627ehf: 1253 diode = w83627ehf_read_value(data, W83627EHF_REG_DIODE); 1254 break; 1255 case w83627uhg: 1256 diode = 0x00; 1257 break; 1258 default: 1259 diode = 0x70; 1260 } 1261 for (i = 0; i < 3; i++) { 1262 const char *label = NULL; 1263 1264 if (data->temp_label) 1265 label = data->temp_label[data->temp_src[i]]; 1266 1267 /* Digital source overrides analog type */ 1268 if (label && strncmp(label, "PECI", 4) == 0) 1269 data->temp_type[i] = 6; 1270 else if (label && strncmp(label, "AMD", 3) == 0) 1271 data->temp_type[i] = 5; 1272 else if ((tmp & (0x02 << i))) 1273 data->temp_type[i] = (diode & (0x10 << i)) ? 1 : 3; 1274 else 1275 data->temp_type[i] = 4; /* thermistor */ 1276 } 1277} 1278 1279static void 1280w83627ehf_set_temp_reg_ehf(struct w83627ehf_data *data, int n_temp) 1281{ 1282 int i; 1283 1284 for (i = 0; i < n_temp; i++) { 1285 data->reg_temp[i] = W83627EHF_REG_TEMP[i]; 1286 data->reg_temp_over[i] = W83627EHF_REG_TEMP_OVER[i]; 1287 data->reg_temp_hyst[i] = W83627EHF_REG_TEMP_HYST[i]; 1288 data->reg_temp_config[i] = W83627EHF_REG_TEMP_CONFIG[i]; 1289 } 1290} 1291 1292static void 1293w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data, 1294 struct w83627ehf_data *data) 1295{ 1296 int fan3pin, fan4pin, fan5pin, regval; 1297 1298 /* The W83627UHG is simple, only two fan inputs, no config */ 1299 if (sio_data->kind == w83627uhg) { 1300 data->has_fan = 0x03; /* fan1 and fan2 */ 1301 data->has_fan_min = 0x03; 1302 return; 1303 } 1304 1305 /* fan4 and fan5 share some pins with the GPIO and serial flash */ 1306 if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) { 1307 fan3pin = 1; 1308 fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40; 1309 fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20; 1310 } else { 1311 fan3pin = 1; 1312 fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06); 1313 fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02); 1314 } 1315 1316 data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */ 1317 data->has_fan |= (fan3pin << 2); 1318 data->has_fan_min |= (fan3pin << 2); 1319 1320 /* 1321 * It looks like fan4 and fan5 pins can be alternatively used 1322 * as fan on/off switches, but fan5 control is write only :/ 1323 * We assume that if the serial interface is disabled, designers 1324 * connected fan5 as input unless they are emitting log 1, which 1325 * is not the default. 1326 */ 1327 regval = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1); 1328 if ((regval & (1 << 2)) && fan4pin) { 1329 data->has_fan |= (1 << 3); 1330 data->has_fan_min |= (1 << 3); 1331 } 1332 if (!(regval & (1 << 1)) && fan5pin) { 1333 data->has_fan |= (1 << 4); 1334 data->has_fan_min |= (1 << 4); 1335 } 1336} 1337 1338static umode_t 1339w83627ehf_is_visible(const void *drvdata, enum hwmon_sensor_types type, 1340 u32 attr, int channel) 1341{ 1342 const struct w83627ehf_data *data = drvdata; 1343 1344 switch (type) { 1345 case hwmon_temp: 1346 /* channel 0.., name 1.. */ 1347 if (!(data->have_temp & (1 << channel))) 1348 return 0; 1349 if (attr == hwmon_temp_input) 1350 return 0444; 1351 if (attr == hwmon_temp_label) { 1352 if (data->temp_label) 1353 return 0444; 1354 return 0; 1355 } 1356 if (channel == 2 && data->temp3_val_only) 1357 return 0; 1358 if (attr == hwmon_temp_max) { 1359 if (data->reg_temp_over[channel]) 1360 return 0644; 1361 else 1362 return 0; 1363 } 1364 if (attr == hwmon_temp_max_hyst) { 1365 if (data->reg_temp_hyst[channel]) 1366 return 0644; 1367 else 1368 return 0; 1369 } 1370 if (channel > 2) 1371 return 0; 1372 if (attr == hwmon_temp_alarm || attr == hwmon_temp_type) 1373 return 0444; 1374 if (attr == hwmon_temp_offset) { 1375 if (data->have_temp_offset & (1 << channel)) 1376 return 0644; 1377 else 1378 return 0; 1379 } 1380 break; 1381 1382 case hwmon_fan: 1383 /* channel 0.., name 1.. */ 1384 if (!(data->has_fan & (1 << channel))) 1385 return 0; 1386 if (attr == hwmon_fan_input || attr == hwmon_fan_alarm) 1387 return 0444; 1388 if (attr == hwmon_fan_div) { 1389 return 0444; 1390 } 1391 if (attr == hwmon_fan_min) { 1392 if (data->has_fan_min & (1 << channel)) 1393 return 0644; 1394 else 1395 return 0; 1396 } 1397 break; 1398 1399 case hwmon_in: 1400 /* channel 0.., name 0.. */ 1401 if (channel >= data->in_num) 1402 return 0; 1403 if (channel == 6 && data->in6_skip) 1404 return 0; 1405 if (attr == hwmon_in_alarm || attr == hwmon_in_input) 1406 return 0444; 1407 if (attr == hwmon_in_min || attr == hwmon_in_max) 1408 return 0644; 1409 break; 1410 1411 case hwmon_pwm: 1412 /* channel 0.., name 1.. */ 1413 if (!(data->has_fan & (1 << channel)) || 1414 channel >= data->pwm_num) 1415 return 0; 1416 if (attr == hwmon_pwm_mode || attr == hwmon_pwm_enable || 1417 attr == hwmon_pwm_input) 1418 return 0644; 1419 break; 1420 1421 case hwmon_intrusion: 1422 return 0644; 1423 1424 default: /* Shouldn't happen */ 1425 return 0; 1426 } 1427 1428 return 0; /* Shouldn't happen */ 1429} 1430 1431static int 1432w83627ehf_do_read_temp(struct w83627ehf_data *data, u32 attr, 1433 int channel, long *val) 1434{ 1435 switch (attr) { 1436 case hwmon_temp_input: 1437 *val = LM75_TEMP_FROM_REG(data->temp[channel]); 1438 return 0; 1439 case hwmon_temp_max: 1440 *val = LM75_TEMP_FROM_REG(data->temp_max[channel]); 1441 return 0; 1442 case hwmon_temp_max_hyst: 1443 *val = LM75_TEMP_FROM_REG(data->temp_max_hyst[channel]); 1444 return 0; 1445 case hwmon_temp_offset: 1446 *val = data->temp_offset[channel] * 1000; 1447 return 0; 1448 case hwmon_temp_type: 1449 *val = (int)data->temp_type[channel]; 1450 return 0; 1451 case hwmon_temp_alarm: 1452 if (channel < 3) { 1453 int bit[] = { 4, 5, 13 }; 1454 *val = (data->alarms >> bit[channel]) & 1; 1455 return 0; 1456 } 1457 break; 1458 1459 default: 1460 break; 1461 } 1462 1463 return -EOPNOTSUPP; 1464} 1465 1466static int 1467w83627ehf_do_read_in(struct w83627ehf_data *data, u32 attr, 1468 int channel, long *val) 1469{ 1470 switch (attr) { 1471 case hwmon_in_input: 1472 *val = in_from_reg(data->in[channel], channel, data->scale_in); 1473 return 0; 1474 case hwmon_in_min: 1475 *val = in_from_reg(data->in_min[channel], channel, 1476 data->scale_in); 1477 return 0; 1478 case hwmon_in_max: 1479 *val = in_from_reg(data->in_max[channel], channel, 1480 data->scale_in); 1481 return 0; 1482 case hwmon_in_alarm: 1483 if (channel < 10) { 1484 int bit[] = { 0, 1, 2, 3, 8, 21, 20, 16, 17, 19 }; 1485 *val = (data->alarms >> bit[channel]) & 1; 1486 return 0; 1487 } 1488 break; 1489 default: 1490 break; 1491 } 1492 return -EOPNOTSUPP; 1493} 1494 1495static int 1496w83627ehf_do_read_fan(struct w83627ehf_data *data, u32 attr, 1497 int channel, long *val) 1498{ 1499 switch (attr) { 1500 case hwmon_fan_input: 1501 *val = data->rpm[channel]; 1502 return 0; 1503 case hwmon_fan_min: 1504 *val = fan_from_reg8(data->fan_min[channel], 1505 data->fan_div[channel]); 1506 return 0; 1507 case hwmon_fan_div: 1508 *val = div_from_reg(data->fan_div[channel]); 1509 return 0; 1510 case hwmon_fan_alarm: 1511 if (channel < 5) { 1512 int bit[] = { 6, 7, 11, 10, 23 }; 1513 *val = (data->alarms >> bit[channel]) & 1; 1514 return 0; 1515 } 1516 break; 1517 default: 1518 break; 1519 } 1520 return -EOPNOTSUPP; 1521} 1522 1523static int 1524w83627ehf_do_read_pwm(struct w83627ehf_data *data, u32 attr, 1525 int channel, long *val) 1526{ 1527 switch (attr) { 1528 case hwmon_pwm_input: 1529 *val = data->pwm[channel]; 1530 return 0; 1531 case hwmon_pwm_enable: 1532 *val = data->pwm_enable[channel]; 1533 return 0; 1534 case hwmon_pwm_mode: 1535 *val = data->pwm_enable[channel]; 1536 return 0; 1537 default: 1538 break; 1539 } 1540 return -EOPNOTSUPP; 1541} 1542 1543static int 1544w83627ehf_do_read_intrusion(struct w83627ehf_data *data, u32 attr, 1545 int channel, long *val) 1546{ 1547 if (attr != hwmon_intrusion_alarm || channel != 0) 1548 return -EOPNOTSUPP; /* shouldn't happen */ 1549 1550 *val = !!(data->caseopen & 0x10); 1551 return 0; 1552} 1553 1554static int 1555w83627ehf_read(struct device *dev, enum hwmon_sensor_types type, 1556 u32 attr, int channel, long *val) 1557{ 1558 struct w83627ehf_data *data = w83627ehf_update_device(dev->parent); 1559 1560 switch (type) { 1561 case hwmon_fan: 1562 return w83627ehf_do_read_fan(data, attr, channel, val); 1563 1564 case hwmon_in: 1565 return w83627ehf_do_read_in(data, attr, channel, val); 1566 1567 case hwmon_pwm: 1568 return w83627ehf_do_read_pwm(data, attr, channel, val); 1569 1570 case hwmon_temp: 1571 return w83627ehf_do_read_temp(data, attr, channel, val); 1572 1573 case hwmon_intrusion: 1574 return w83627ehf_do_read_intrusion(data, attr, channel, val); 1575 1576 default: 1577 break; 1578 } 1579 1580 return -EOPNOTSUPP; 1581} 1582 1583static int 1584w83627ehf_read_string(struct device *dev, enum hwmon_sensor_types type, 1585 u32 attr, int channel, const char **str) 1586{ 1587 struct w83627ehf_data *data = dev_get_drvdata(dev); 1588 1589 switch (type) { 1590 case hwmon_temp: 1591 if (attr == hwmon_temp_label) { 1592 *str = data->temp_label[data->temp_src[channel]]; 1593 return 0; 1594 } 1595 break; 1596 1597 default: 1598 break; 1599 } 1600 /* Nothing else should be read as a string */ 1601 return -EOPNOTSUPP; 1602} 1603 1604static int 1605w83627ehf_write(struct device *dev, enum hwmon_sensor_types type, 1606 u32 attr, int channel, long val) 1607{ 1608 struct w83627ehf_data *data = dev_get_drvdata(dev); 1609 1610 if (type == hwmon_in && attr == hwmon_in_min) 1611 return store_in_min(dev, data, channel, val); 1612 if (type == hwmon_in && attr == hwmon_in_max) 1613 return store_in_max(dev, data, channel, val); 1614 1615 if (type == hwmon_fan && attr == hwmon_fan_min) 1616 return store_fan_min(dev, data, channel, val); 1617 1618 if (type == hwmon_temp && attr == hwmon_temp_max) 1619 return store_temp_max(dev, data, channel, val); 1620 if (type == hwmon_temp && attr == hwmon_temp_max_hyst) 1621 return store_temp_max_hyst(dev, data, channel, val); 1622 if (type == hwmon_temp && attr == hwmon_temp_offset) 1623 return store_temp_offset(dev, data, channel, val); 1624 1625 if (type == hwmon_pwm && attr == hwmon_pwm_mode) 1626 return store_pwm_mode(dev, data, channel, val); 1627 if (type == hwmon_pwm && attr == hwmon_pwm_enable) 1628 return store_pwm_enable(dev, data, channel, val); 1629 if (type == hwmon_pwm && attr == hwmon_pwm_input) 1630 return store_pwm(dev, data, channel, val); 1631 1632 if (type == hwmon_intrusion && attr == hwmon_intrusion_alarm) 1633 return clear_caseopen(dev, data, channel, val); 1634 1635 return -EOPNOTSUPP; 1636} 1637 1638static const struct hwmon_ops w83627ehf_ops = { 1639 .is_visible = w83627ehf_is_visible, 1640 .read = w83627ehf_read, 1641 .read_string = w83627ehf_read_string, 1642 .write = w83627ehf_write, 1643}; 1644 1645static const struct hwmon_channel_info *w83627ehf_info[] = { 1646 HWMON_CHANNEL_INFO(fan, 1647 HWMON_F_ALARM | HWMON_F_DIV | HWMON_F_INPUT | HWMON_F_MIN, 1648 HWMON_F_ALARM | HWMON_F_DIV | HWMON_F_INPUT | HWMON_F_MIN, 1649 HWMON_F_ALARM | HWMON_F_DIV | HWMON_F_INPUT | HWMON_F_MIN, 1650 HWMON_F_ALARM | HWMON_F_DIV | HWMON_F_INPUT | HWMON_F_MIN, 1651 HWMON_F_ALARM | HWMON_F_DIV | HWMON_F_INPUT | HWMON_F_MIN), 1652 HWMON_CHANNEL_INFO(in, 1653 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN, 1654 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN, 1655 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN, 1656 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN, 1657 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN, 1658 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN, 1659 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN, 1660 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN, 1661 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN, 1662 HWMON_I_ALARM | HWMON_I_INPUT | HWMON_I_MAX | HWMON_I_MIN), 1663 HWMON_CHANNEL_INFO(pwm, 1664 HWMON_PWM_ENABLE | HWMON_PWM_INPUT | HWMON_PWM_MODE, 1665 HWMON_PWM_ENABLE | HWMON_PWM_INPUT | HWMON_PWM_MODE, 1666 HWMON_PWM_ENABLE | HWMON_PWM_INPUT | HWMON_PWM_MODE, 1667 HWMON_PWM_ENABLE | HWMON_PWM_INPUT | HWMON_PWM_MODE), 1668 HWMON_CHANNEL_INFO(temp, 1669 HWMON_T_ALARM | HWMON_T_INPUT | HWMON_T_LABEL | HWMON_T_MAX | 1670 HWMON_T_MAX_HYST | HWMON_T_OFFSET | HWMON_T_TYPE, 1671 HWMON_T_ALARM | HWMON_T_INPUT | HWMON_T_LABEL | HWMON_T_MAX | 1672 HWMON_T_MAX_HYST | HWMON_T_OFFSET | HWMON_T_TYPE, 1673 HWMON_T_ALARM | HWMON_T_INPUT | HWMON_T_LABEL | HWMON_T_MAX | 1674 HWMON_T_MAX_HYST | HWMON_T_OFFSET | HWMON_T_TYPE, 1675 HWMON_T_ALARM | HWMON_T_INPUT | HWMON_T_LABEL | HWMON_T_MAX | 1676 HWMON_T_MAX_HYST | HWMON_T_OFFSET | HWMON_T_TYPE, 1677 HWMON_T_ALARM | HWMON_T_INPUT | HWMON_T_LABEL | HWMON_T_MAX | 1678 HWMON_T_MAX_HYST | HWMON_T_OFFSET | HWMON_T_TYPE, 1679 HWMON_T_ALARM | HWMON_T_INPUT | HWMON_T_LABEL | HWMON_T_MAX | 1680 HWMON_T_MAX_HYST | HWMON_T_OFFSET | HWMON_T_TYPE, 1681 HWMON_T_ALARM | HWMON_T_INPUT | HWMON_T_LABEL | HWMON_T_MAX | 1682 HWMON_T_MAX_HYST | HWMON_T_OFFSET | HWMON_T_TYPE, 1683 HWMON_T_ALARM | HWMON_T_INPUT | HWMON_T_LABEL | HWMON_T_MAX | 1684 HWMON_T_MAX_HYST | HWMON_T_OFFSET | HWMON_T_TYPE, 1685 HWMON_T_ALARM | HWMON_T_INPUT | HWMON_T_LABEL | HWMON_T_MAX | 1686 HWMON_T_MAX_HYST | HWMON_T_OFFSET | HWMON_T_TYPE), 1687 HWMON_CHANNEL_INFO(intrusion, 1688 HWMON_INTRUSION_ALARM), 1689 NULL 1690}; 1691 1692static const struct hwmon_chip_info w83627ehf_chip_info = { 1693 .ops = &w83627ehf_ops, 1694 .info = w83627ehf_info, 1695}; 1696 1697static int w83627ehf_probe(struct platform_device *pdev) 1698{ 1699 struct device *dev = &pdev->dev; 1700 struct w83627ehf_sio_data *sio_data = dev_get_platdata(dev); 1701 struct w83627ehf_data *data; 1702 struct resource *res; 1703 u8 en_vrm10; 1704 int i, err = 0; 1705 struct device *hwmon_dev; 1706 1707 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 1708 if (!request_region(res->start, IOREGION_LENGTH, DRVNAME)) { 1709 err = -EBUSY; 1710 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", 1711 (unsigned long)res->start, 1712 (unsigned long)res->start + IOREGION_LENGTH - 1); 1713 goto exit; 1714 } 1715 1716 data = devm_kzalloc(&pdev->dev, sizeof(struct w83627ehf_data), 1717 GFP_KERNEL); 1718 if (!data) { 1719 err = -ENOMEM; 1720 goto exit_release; 1721 } 1722 1723 data->addr = res->start; 1724 mutex_init(&data->lock); 1725 mutex_init(&data->update_lock); 1726 data->name = w83627ehf_device_names[sio_data->kind]; 1727 data->bank = 0xff; /* Force initial bank selection */ 1728 platform_set_drvdata(pdev, data); 1729 1730 /* 627EHG and 627EHF have 10 voltage inputs; 627DHG and 667HG have 9 */ 1731 data->in_num = (sio_data->kind == w83627ehf) ? 10 : 9; 1732 /* 667HG has 3 pwms, and 627UHG has only 2 */ 1733 switch (sio_data->kind) { 1734 default: 1735 data->pwm_num = 4; 1736 break; 1737 case w83667hg: 1738 case w83667hg_b: 1739 data->pwm_num = 3; 1740 break; 1741 case w83627uhg: 1742 data->pwm_num = 2; 1743 break; 1744 } 1745 1746 /* Default to 3 temperature inputs, code below will adjust as needed */ 1747 data->have_temp = 0x07; 1748 1749 /* Deal with temperature register setup first. */ 1750 if (sio_data->kind == w83667hg_b) { 1751 u8 reg; 1752 1753 w83627ehf_set_temp_reg_ehf(data, 4); 1754 1755 /* 1756 * Temperature sources are selected with bank 0, registers 0x49 1757 * and 0x4a. 1758 */ 1759 reg = w83627ehf_read_value(data, 0x4a); 1760 data->temp_src[0] = reg >> 5; 1761 reg = w83627ehf_read_value(data, 0x49); 1762 data->temp_src[1] = reg & 0x07; 1763 data->temp_src[2] = (reg >> 4) & 0x07; 1764 1765 /* 1766 * W83667HG-B has another temperature register at 0x7e. 1767 * The temperature source is selected with register 0x7d. 1768 * Support it if the source differs from already reported 1769 * sources. 1770 */ 1771 reg = w83627ehf_read_value(data, 0x7d); 1772 reg &= 0x07; 1773 if (reg != data->temp_src[0] && reg != data->temp_src[1] 1774 && reg != data->temp_src[2]) { 1775 data->temp_src[3] = reg; 1776 data->have_temp |= 1 << 3; 1777 } 1778 1779 /* 1780 * Chip supports either AUXTIN or VIN3. Try to find out which 1781 * one. 1782 */ 1783 reg = w83627ehf_read_value(data, W83627EHF_REG_TEMP_CONFIG[2]); 1784 if (data->temp_src[2] == 2 && (reg & 0x01)) 1785 data->have_temp &= ~(1 << 2); 1786 1787 if ((data->temp_src[2] == 2 && (data->have_temp & (1 << 2))) 1788 || (data->temp_src[3] == 2 && (data->have_temp & (1 << 3)))) 1789 data->in6_skip = 1; 1790 1791 data->temp_label = w83667hg_b_temp_label; 1792 data->have_temp_offset = data->have_temp & 0x07; 1793 for (i = 0; i < 3; i++) { 1794 if (data->temp_src[i] > 2) 1795 data->have_temp_offset &= ~(1 << i); 1796 } 1797 } else if (sio_data->kind == w83627uhg) { 1798 u8 reg; 1799 1800 w83627ehf_set_temp_reg_ehf(data, 3); 1801 1802 /* 1803 * Temperature sources for temp2 and temp3 are selected with 1804 * bank 0, registers 0x49 and 0x4a. 1805 */ 1806 data->temp_src[0] = 0; /* SYSTIN */ 1807 reg = w83627ehf_read_value(data, 0x49) & 0x07; 1808 /* Adjust to have the same mapping as other source registers */ 1809 if (reg == 0) 1810 data->temp_src[1] = 1; 1811 else if (reg >= 2 && reg <= 5) 1812 data->temp_src[1] = reg + 2; 1813 else /* should never happen */ 1814 data->have_temp &= ~(1 << 1); 1815 reg = w83627ehf_read_value(data, 0x4a); 1816 data->temp_src[2] = reg >> 5; 1817 1818 /* 1819 * Skip temp3 if source is invalid or the same as temp1 1820 * or temp2. 1821 */ 1822 if (data->temp_src[2] == 2 || data->temp_src[2] == 3 || 1823 data->temp_src[2] == data->temp_src[0] || 1824 ((data->have_temp & (1 << 1)) && 1825 data->temp_src[2] == data->temp_src[1])) 1826 data->have_temp &= ~(1 << 2); 1827 else 1828 data->temp3_val_only = 1; /* No limit regs */ 1829 1830 data->in6_skip = 1; /* No VIN3 */ 1831 1832 data->temp_label = w83667hg_b_temp_label; 1833 data->have_temp_offset = data->have_temp & 0x03; 1834 for (i = 0; i < 3; i++) { 1835 if (data->temp_src[i] > 1) 1836 data->have_temp_offset &= ~(1 << i); 1837 } 1838 } else { 1839 w83627ehf_set_temp_reg_ehf(data, 3); 1840 1841 /* Temperature sources are fixed */ 1842 1843 if (sio_data->kind == w83667hg) { 1844 u8 reg; 1845 1846 /* 1847 * Chip supports either AUXTIN or VIN3. Try to find 1848 * out which one. 1849 */ 1850 reg = w83627ehf_read_value(data, 1851 W83627EHF_REG_TEMP_CONFIG[2]); 1852 if (reg & 0x01) 1853 data->have_temp &= ~(1 << 2); 1854 else 1855 data->in6_skip = 1; 1856 } 1857 data->have_temp_offset = data->have_temp & 0x07; 1858 } 1859 1860 if (sio_data->kind == w83667hg_b) { 1861 data->REG_FAN_MAX_OUTPUT = 1862 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B; 1863 data->REG_FAN_STEP_OUTPUT = 1864 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B; 1865 } else { 1866 data->REG_FAN_MAX_OUTPUT = 1867 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON; 1868 data->REG_FAN_STEP_OUTPUT = 1869 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON; 1870 } 1871 1872 /* Setup input voltage scaling factors */ 1873 if (sio_data->kind == w83627uhg) 1874 data->scale_in = scale_in_w83627uhg; 1875 else 1876 data->scale_in = scale_in_common; 1877 1878 /* Initialize the chip */ 1879 w83627ehf_init_device(data, sio_data->kind); 1880 1881 data->vrm = vid_which_vrm(); 1882 1883 err = superio_enter(sio_data->sioreg); 1884 if (err) 1885 goto exit_release; 1886 1887 /* Read VID value */ 1888 if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) { 1889 /* 1890 * W83667HG has different pins for VID input and output, so 1891 * we can get the VID input values directly at logical device D 1892 * 0xe3. 1893 */ 1894 superio_select(sio_data->sioreg, W83667HG_LD_VID); 1895 data->vid = superio_inb(sio_data->sioreg, 0xe3); 1896 data->have_vid = true; 1897 } else if (sio_data->kind != w83627uhg) { 1898 superio_select(sio_data->sioreg, W83627EHF_LD_HWM); 1899 if (superio_inb(sio_data->sioreg, SIO_REG_VID_CTRL) & 0x80) { 1900 /* 1901 * Set VID input sensibility if needed. In theory the 1902 * BIOS should have set it, but in practice it's not 1903 * always the case. We only do it for the W83627EHF/EHG 1904 * because the W83627DHG is more complex in this 1905 * respect. 1906 */ 1907 if (sio_data->kind == w83627ehf) { 1908 en_vrm10 = superio_inb(sio_data->sioreg, 1909 SIO_REG_EN_VRM10); 1910 if ((en_vrm10 & 0x08) && data->vrm == 90) { 1911 dev_warn(dev, 1912 "Setting VID input voltage to TTL\n"); 1913 superio_outb(sio_data->sioreg, 1914 SIO_REG_EN_VRM10, 1915 en_vrm10 & ~0x08); 1916 } else if (!(en_vrm10 & 0x08) 1917 && data->vrm == 100) { 1918 dev_warn(dev, 1919 "Setting VID input voltage to VRM10\n"); 1920 superio_outb(sio_data->sioreg, 1921 SIO_REG_EN_VRM10, 1922 en_vrm10 | 0x08); 1923 } 1924 } 1925 1926 data->vid = superio_inb(sio_data->sioreg, 1927 SIO_REG_VID_DATA); 1928 if (sio_data->kind == w83627ehf) /* 6 VID pins only */ 1929 data->vid &= 0x3f; 1930 data->have_vid = true; 1931 } else { 1932 dev_info(dev, 1933 "VID pins in output mode, CPU VID not available\n"); 1934 } 1935 } 1936 1937 w83627ehf_check_fan_inputs(sio_data, data); 1938 1939 superio_exit(sio_data->sioreg); 1940 1941 /* Read fan clock dividers immediately */ 1942 w83627ehf_update_fan_div(data); 1943 1944 /* Read pwm data to save original values */ 1945 w83627ehf_update_pwm(data); 1946 for (i = 0; i < data->pwm_num; i++) 1947 data->pwm_enable_orig[i] = data->pwm_enable[i]; 1948 1949 hwmon_dev = devm_hwmon_device_register_with_info(&pdev->dev, 1950 data->name, 1951 data, 1952 &w83627ehf_chip_info, 1953 w83627ehf_groups); 1954 if (IS_ERR(hwmon_dev)) { 1955 err = PTR_ERR(hwmon_dev); 1956 goto exit_release; 1957 } 1958 1959 return 0; 1960 1961exit_release: 1962 release_region(res->start, IOREGION_LENGTH); 1963exit: 1964 return err; 1965} 1966 1967static int w83627ehf_remove(struct platform_device *pdev) 1968{ 1969 struct w83627ehf_data *data = platform_get_drvdata(pdev); 1970 1971 release_region(data->addr, IOREGION_LENGTH); 1972 1973 return 0; 1974} 1975 1976#ifdef CONFIG_PM 1977static int w83627ehf_suspend(struct device *dev) 1978{ 1979 struct w83627ehf_data *data = w83627ehf_update_device(dev); 1980 1981 mutex_lock(&data->update_lock); 1982 data->vbat = w83627ehf_read_value(data, W83627EHF_REG_VBAT); 1983 mutex_unlock(&data->update_lock); 1984 1985 return 0; 1986} 1987 1988static int w83627ehf_resume(struct device *dev) 1989{ 1990 struct w83627ehf_data *data = dev_get_drvdata(dev); 1991 int i; 1992 1993 mutex_lock(&data->update_lock); 1994 data->bank = 0xff; /* Force initial bank selection */ 1995 1996 /* Restore limits */ 1997 for (i = 0; i < data->in_num; i++) { 1998 if ((i == 6) && data->in6_skip) 1999 continue; 2000 2001 w83627ehf_write_value(data, W83627EHF_REG_IN_MIN(i), 2002 data->in_min[i]); 2003 w83627ehf_write_value(data, W83627EHF_REG_IN_MAX(i), 2004 data->in_max[i]); 2005 } 2006 2007 for (i = 0; i < 5; i++) { 2008 if (!(data->has_fan_min & (1 << i))) 2009 continue; 2010 2011 w83627ehf_write_value(data, W83627EHF_REG_FAN_MIN[i], 2012 data->fan_min[i]); 2013 } 2014 2015 for (i = 0; i < NUM_REG_TEMP; i++) { 2016 if (!(data->have_temp & (1 << i))) 2017 continue; 2018 2019 if (data->reg_temp_over[i]) 2020 w83627ehf_write_temp(data, data->reg_temp_over[i], 2021 data->temp_max[i]); 2022 if (data->reg_temp_hyst[i]) 2023 w83627ehf_write_temp(data, data->reg_temp_hyst[i], 2024 data->temp_max_hyst[i]); 2025 if (i > 2) 2026 continue; 2027 if (data->have_temp_offset & (1 << i)) 2028 w83627ehf_write_value(data, 2029 W83627EHF_REG_TEMP_OFFSET[i], 2030 data->temp_offset[i]); 2031 } 2032 2033 /* Restore other settings */ 2034 w83627ehf_write_value(data, W83627EHF_REG_VBAT, data->vbat); 2035 2036 /* Force re-reading all values */ 2037 data->valid = 0; 2038 mutex_unlock(&data->update_lock); 2039 2040 return 0; 2041} 2042 2043static const struct dev_pm_ops w83627ehf_dev_pm_ops = { 2044 .suspend = w83627ehf_suspend, 2045 .resume = w83627ehf_resume, 2046 .freeze = w83627ehf_suspend, 2047 .restore = w83627ehf_resume, 2048}; 2049 2050#define W83627EHF_DEV_PM_OPS (&w83627ehf_dev_pm_ops) 2051#else 2052#define W83627EHF_DEV_PM_OPS NULL 2053#endif /* CONFIG_PM */ 2054 2055static struct platform_driver w83627ehf_driver = { 2056 .driver = { 2057 .name = DRVNAME, 2058 .pm = W83627EHF_DEV_PM_OPS, 2059 }, 2060 .probe = w83627ehf_probe, 2061 .remove = w83627ehf_remove, 2062}; 2063 2064/* w83627ehf_find() looks for a '627 in the Super-I/O config space */ 2065static int __init w83627ehf_find(int sioaddr, unsigned short *addr, 2066 struct w83627ehf_sio_data *sio_data) 2067{ 2068 static const char sio_name_W83627EHF[] __initconst = "W83627EHF"; 2069 static const char sio_name_W83627EHG[] __initconst = "W83627EHG"; 2070 static const char sio_name_W83627DHG[] __initconst = "W83627DHG"; 2071 static const char sio_name_W83627DHG_P[] __initconst = "W83627DHG-P"; 2072 static const char sio_name_W83627UHG[] __initconst = "W83627UHG"; 2073 static const char sio_name_W83667HG[] __initconst = "W83667HG"; 2074 static const char sio_name_W83667HG_B[] __initconst = "W83667HG-B"; 2075 2076 u16 val; 2077 const char *sio_name; 2078 int err; 2079 2080 err = superio_enter(sioaddr); 2081 if (err) 2082 return err; 2083 2084 if (force_id) 2085 val = force_id; 2086 else 2087 val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8) 2088 | superio_inb(sioaddr, SIO_REG_DEVID + 1); 2089 switch (val & SIO_ID_MASK) { 2090 case SIO_W83627EHF_ID: 2091 sio_data->kind = w83627ehf; 2092 sio_name = sio_name_W83627EHF; 2093 break; 2094 case SIO_W83627EHG_ID: 2095 sio_data->kind = w83627ehf; 2096 sio_name = sio_name_W83627EHG; 2097 break; 2098 case SIO_W83627DHG_ID: 2099 sio_data->kind = w83627dhg; 2100 sio_name = sio_name_W83627DHG; 2101 break; 2102 case SIO_W83627DHG_P_ID: 2103 sio_data->kind = w83627dhg_p; 2104 sio_name = sio_name_W83627DHG_P; 2105 break; 2106 case SIO_W83627UHG_ID: 2107 sio_data->kind = w83627uhg; 2108 sio_name = sio_name_W83627UHG; 2109 break; 2110 case SIO_W83667HG_ID: 2111 sio_data->kind = w83667hg; 2112 sio_name = sio_name_W83667HG; 2113 break; 2114 case SIO_W83667HG_B_ID: 2115 sio_data->kind = w83667hg_b; 2116 sio_name = sio_name_W83667HG_B; 2117 break; 2118 default: 2119 if (val != 0xffff) 2120 pr_debug("unsupported chip ID: 0x%04x\n", val); 2121 superio_exit(sioaddr); 2122 return -ENODEV; 2123 } 2124 2125 /* We have a known chip, find the HWM I/O address */ 2126 superio_select(sioaddr, W83627EHF_LD_HWM); 2127 val = (superio_inb(sioaddr, SIO_REG_ADDR) << 8) 2128 | superio_inb(sioaddr, SIO_REG_ADDR + 1); 2129 *addr = val & IOREGION_ALIGNMENT; 2130 if (*addr == 0) { 2131 pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n"); 2132 superio_exit(sioaddr); 2133 return -ENODEV; 2134 } 2135 2136 /* Activate logical device if needed */ 2137 val = superio_inb(sioaddr, SIO_REG_ENABLE); 2138 if (!(val & 0x01)) { 2139 pr_warn("Forcibly enabling Super-I/O. Sensor is probably unusable.\n"); 2140 superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01); 2141 } 2142 2143 superio_exit(sioaddr); 2144 pr_info("Found %s chip at %#x\n", sio_name, *addr); 2145 sio_data->sioreg = sioaddr; 2146 2147 return 0; 2148} 2149 2150/* 2151 * when Super-I/O functions move to a separate file, the Super-I/O 2152 * bus will manage the lifetime of the device and this module will only keep 2153 * track of the w83627ehf driver. But since we platform_device_alloc(), we 2154 * must keep track of the device 2155 */ 2156static struct platform_device *pdev; 2157 2158static int __init sensors_w83627ehf_init(void) 2159{ 2160 int err; 2161 unsigned short address; 2162 struct resource res; 2163 struct w83627ehf_sio_data sio_data; 2164 2165 /* 2166 * initialize sio_data->kind and sio_data->sioreg. 2167 * 2168 * when Super-I/O functions move to a separate file, the Super-I/O 2169 * driver will probe 0x2e and 0x4e and auto-detect the presence of a 2170 * w83627ehf hardware monitor, and call probe() 2171 */ 2172 if (w83627ehf_find(0x2e, &address, &sio_data) && 2173 w83627ehf_find(0x4e, &address, &sio_data)) 2174 return -ENODEV; 2175 2176 err = platform_driver_register(&w83627ehf_driver); 2177 if (err) 2178 goto exit; 2179 2180 pdev = platform_device_alloc(DRVNAME, address); 2181 if (!pdev) { 2182 err = -ENOMEM; 2183 pr_err("Device allocation failed\n"); 2184 goto exit_unregister; 2185 } 2186 2187 err = platform_device_add_data(pdev, &sio_data, 2188 sizeof(struct w83627ehf_sio_data)); 2189 if (err) { 2190 pr_err("Platform data allocation failed\n"); 2191 goto exit_device_put; 2192 } 2193 2194 memset(&res, 0, sizeof(res)); 2195 res.name = DRVNAME; 2196 res.start = address + IOREGION_OFFSET; 2197 res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1; 2198 res.flags = IORESOURCE_IO; 2199 2200 err = acpi_check_resource_conflict(&res); 2201 if (err) 2202 goto exit_device_put; 2203 2204 err = platform_device_add_resources(pdev, &res, 1); 2205 if (err) { 2206 pr_err("Device resource addition failed (%d)\n", err); 2207 goto exit_device_put; 2208 } 2209 2210 /* platform_device_add calls probe() */ 2211 err = platform_device_add(pdev); 2212 if (err) { 2213 pr_err("Device addition failed (%d)\n", err); 2214 goto exit_device_put; 2215 } 2216 2217 return 0; 2218 2219exit_device_put: 2220 platform_device_put(pdev); 2221exit_unregister: 2222 platform_driver_unregister(&w83627ehf_driver); 2223exit: 2224 return err; 2225} 2226 2227static void __exit sensors_w83627ehf_exit(void) 2228{ 2229 platform_device_unregister(pdev); 2230 platform_driver_unregister(&w83627ehf_driver); 2231} 2232 2233MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>"); 2234MODULE_DESCRIPTION("W83627EHF driver"); 2235MODULE_LICENSE("GPL"); 2236 2237module_init(sensors_w83627ehf_init); 2238module_exit(sensors_w83627ehf_exit); 2239