1 /* 2 * w83627ehf - Driver for the hardware monitoring functionality of 3 * the Winbond W83627EHF Super-I/O chip 4 * Copyright (C) 2005-2012 Jean Delvare <khali@linux-fr.org> 5 * Copyright (C) 2006 Yuan Mu (Winbond), 6 * Rudolf Marek <r.marek@assembler.cz> 7 * David Hubbard <david.c.hubbard@gmail.com> 8 * Daniel J Blueman <daniel.blueman@gmail.com> 9 * Copyright (C) 2010 Sheng-Yuan Huang (Nuvoton) (PS00) 10 * 11 * Shamelessly ripped from the w83627hf driver 12 * Copyright (C) 2003 Mark Studebaker 13 * 14 * Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help 15 * in testing and debugging this driver. 16 * 17 * This driver also supports the W83627EHG, which is the lead-free 18 * version of the W83627EHF. 19 * 20 * This program is free software; you can redistribute it and/or modify 21 * it under the terms of the GNU General Public License as published by 22 * the Free Software Foundation; either version 2 of the License, or 23 * (at your option) any later version. 24 * 25 * This program is distributed in the hope that it will be useful, 26 * but WITHOUT ANY WARRANTY; without even the implied warranty of 27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 28 * GNU General Public License for more details. 29 * 30 * You should have received a copy of the GNU General Public License 31 * along with this program; if not, write to the Free Software 32 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 33 * 34 * Supports the following chips: 35 * 36 * Chip #vin #fan #pwm #temp chip IDs man ID 37 * w83627ehf 10 5 4 3 0x8850 0x88 0x5ca3 38 * 0x8860 0xa1 39 * w83627dhg 9 5 4 3 0xa020 0xc1 0x5ca3 40 * w83627dhg-p 9 5 4 3 0xb070 0xc1 0x5ca3 41 * w83627uhg 8 2 2 3 0xa230 0xc1 0x5ca3 42 * w83667hg 9 5 3 3 0xa510 0xc1 0x5ca3 43 * w83667hg-b 9 5 3 4 0xb350 0xc1 0x5ca3 44 * nct6775f 9 4 3 9 0xb470 0xc1 0x5ca3 45 * nct6776f 9 5 3 9 0xC330 0xc1 0x5ca3 46 */ 47 48 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 49 50 #include <linux/module.h> 51 #include <linux/init.h> 52 #include <linux/slab.h> 53 #include <linux/jiffies.h> 54 #include <linux/platform_device.h> 55 #include <linux/hwmon.h> 56 #include <linux/hwmon-sysfs.h> 57 #include <linux/hwmon-vid.h> 58 #include <linux/err.h> 59 #include <linux/mutex.h> 60 #include <linux/acpi.h> 61 #include <linux/io.h> 62 #include "lm75.h" 63 64 enum kinds { 65 w83627ehf, w83627dhg, w83627dhg_p, w83627uhg, 66 w83667hg, w83667hg_b, nct6775, nct6776, 67 }; 68 69 /* used to set data->name = w83627ehf_device_names[data->sio_kind] */ 70 static const char * const w83627ehf_device_names[] = { 71 "w83627ehf", 72 "w83627dhg", 73 "w83627dhg", 74 "w83627uhg", 75 "w83667hg", 76 "w83667hg", 77 "nct6775", 78 "nct6776", 79 }; 80 81 static unsigned short force_id; 82 module_param(force_id, ushort, 0); 83 MODULE_PARM_DESC(force_id, "Override the detected device ID"); 84 85 static unsigned short fan_debounce; 86 module_param(fan_debounce, ushort, 0); 87 MODULE_PARM_DESC(fan_debounce, "Enable debouncing for fan RPM signal"); 88 89 #define DRVNAME "w83627ehf" 90 91 /* 92 * Super-I/O constants and functions 93 */ 94 95 #define W83627EHF_LD_HWM 0x0b 96 #define W83667HG_LD_VID 0x0d 97 98 #define SIO_REG_LDSEL 0x07 /* Logical device select */ 99 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ 100 #define SIO_REG_EN_VRM10 0x2C /* GPIO3, GPIO4 selection */ 101 #define SIO_REG_ENABLE 0x30 /* Logical device enable */ 102 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ 103 #define SIO_REG_VID_CTRL 0xF0 /* VID control */ 104 #define SIO_REG_VID_DATA 0xF1 /* VID data */ 105 106 #define SIO_W83627EHF_ID 0x8850 107 #define SIO_W83627EHG_ID 0x8860 108 #define SIO_W83627DHG_ID 0xa020 109 #define SIO_W83627DHG_P_ID 0xb070 110 #define SIO_W83627UHG_ID 0xa230 111 #define SIO_W83667HG_ID 0xa510 112 #define SIO_W83667HG_B_ID 0xb350 113 #define SIO_NCT6775_ID 0xb470 114 #define SIO_NCT6776_ID 0xc330 115 #define SIO_ID_MASK 0xFFF0 116 117 static inline void 118 superio_outb(int ioreg, int reg, int val) 119 { 120 outb(reg, ioreg); 121 outb(val, ioreg + 1); 122 } 123 124 static inline int 125 superio_inb(int ioreg, int reg) 126 { 127 outb(reg, ioreg); 128 return inb(ioreg + 1); 129 } 130 131 static inline void 132 superio_select(int ioreg, int ld) 133 { 134 outb(SIO_REG_LDSEL, ioreg); 135 outb(ld, ioreg + 1); 136 } 137 138 static inline void 139 superio_enter(int ioreg) 140 { 141 outb(0x87, ioreg); 142 outb(0x87, ioreg); 143 } 144 145 static inline void 146 superio_exit(int ioreg) 147 { 148 outb(0xaa, ioreg); 149 outb(0x02, ioreg); 150 outb(0x02, ioreg + 1); 151 } 152 153 /* 154 * ISA constants 155 */ 156 157 #define IOREGION_ALIGNMENT (~7) 158 #define IOREGION_OFFSET 5 159 #define IOREGION_LENGTH 2 160 #define ADDR_REG_OFFSET 0 161 #define DATA_REG_OFFSET 1 162 163 #define W83627EHF_REG_BANK 0x4E 164 #define W83627EHF_REG_CONFIG 0x40 165 166 /* 167 * Not currently used: 168 * REG_MAN_ID has the value 0x5ca3 for all supported chips. 169 * REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model. 170 * REG_MAN_ID is at port 0x4f 171 * REG_CHIP_ID is at port 0x58 172 */ 173 174 static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 }; 175 static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c }; 176 177 /* The W83627EHF registers for nr=7,8,9 are in bank 5 */ 178 #define W83627EHF_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \ 179 (0x554 + (((nr) - 7) * 2))) 180 #define W83627EHF_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \ 181 (0x555 + (((nr) - 7) * 2))) 182 #define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \ 183 (0x550 + (nr) - 7)) 184 185 static const u16 W83627EHF_REG_TEMP[] = { 0x27, 0x150, 0x250, 0x7e }; 186 static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x3a, 0x153, 0x253, 0 }; 187 static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x39, 0x155, 0x255, 0 }; 188 static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0, 0x152, 0x252, 0 }; 189 190 /* Fan clock dividers are spread over the following five registers */ 191 #define W83627EHF_REG_FANDIV1 0x47 192 #define W83627EHF_REG_FANDIV2 0x4B 193 #define W83627EHF_REG_VBAT 0x5D 194 #define W83627EHF_REG_DIODE 0x59 195 #define W83627EHF_REG_SMI_OVT 0x4C 196 197 /* NCT6775F has its own fan divider registers */ 198 #define NCT6775_REG_FANDIV1 0x506 199 #define NCT6775_REG_FANDIV2 0x507 200 #define NCT6775_REG_FAN_DEBOUNCE 0xf0 201 202 #define W83627EHF_REG_ALARM1 0x459 203 #define W83627EHF_REG_ALARM2 0x45A 204 #define W83627EHF_REG_ALARM3 0x45B 205 206 #define W83627EHF_REG_CASEOPEN_DET 0x42 /* SMI STATUS #2 */ 207 #define W83627EHF_REG_CASEOPEN_CLR 0x46 /* SMI MASK #3 */ 208 209 /* SmartFan registers */ 210 #define W83627EHF_REG_FAN_STEPUP_TIME 0x0f 211 #define W83627EHF_REG_FAN_STEPDOWN_TIME 0x0e 212 213 /* DC or PWM output fan configuration */ 214 static const u8 W83627EHF_REG_PWM_ENABLE[] = { 215 0x04, /* SYS FAN0 output mode and PWM mode */ 216 0x04, /* CPU FAN0 output mode and PWM mode */ 217 0x12, /* AUX FAN mode */ 218 0x62, /* CPU FAN1 mode */ 219 }; 220 221 static const u8 W83627EHF_PWM_MODE_SHIFT[] = { 0, 1, 0, 6 }; 222 static const u8 W83627EHF_PWM_ENABLE_SHIFT[] = { 2, 4, 1, 4 }; 223 224 /* FAN Duty Cycle, be used to control */ 225 static const u16 W83627EHF_REG_PWM[] = { 0x01, 0x03, 0x11, 0x61 }; 226 static const u16 W83627EHF_REG_TARGET[] = { 0x05, 0x06, 0x13, 0x63 }; 227 static const u8 W83627EHF_REG_TOLERANCE[] = { 0x07, 0x07, 0x14, 0x62 }; 228 229 /* Advanced Fan control, some values are common for all fans */ 230 static const u16 W83627EHF_REG_FAN_START_OUTPUT[] = { 0x0a, 0x0b, 0x16, 0x65 }; 231 static const u16 W83627EHF_REG_FAN_STOP_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 }; 232 static const u16 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0c, 0x0d, 0x17, 0x66 }; 233 234 static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON[] 235 = { 0xff, 0x67, 0xff, 0x69 }; 236 static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON[] 237 = { 0xff, 0x68, 0xff, 0x6a }; 238 239 static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B[] = { 0x67, 0x69, 0x6b }; 240 static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B[] 241 = { 0x68, 0x6a, 0x6c }; 242 243 static const u16 W83627EHF_REG_TEMP_OFFSET[] = { 0x454, 0x455, 0x456 }; 244 245 static const u16 NCT6775_REG_TARGET[] = { 0x101, 0x201, 0x301 }; 246 static const u16 NCT6775_REG_FAN_MODE[] = { 0x102, 0x202, 0x302 }; 247 static const u16 NCT6775_REG_FAN_STOP_OUTPUT[] = { 0x105, 0x205, 0x305 }; 248 static const u16 NCT6775_REG_FAN_START_OUTPUT[] = { 0x106, 0x206, 0x306 }; 249 static const u16 NCT6775_REG_FAN_STOP_TIME[] = { 0x107, 0x207, 0x307 }; 250 static const u16 NCT6775_REG_PWM[] = { 0x109, 0x209, 0x309 }; 251 static const u16 NCT6775_REG_FAN_MAX_OUTPUT[] = { 0x10a, 0x20a, 0x30a }; 252 static const u16 NCT6775_REG_FAN_STEP_OUTPUT[] = { 0x10b, 0x20b, 0x30b }; 253 static const u16 NCT6775_REG_FAN[] = { 0x630, 0x632, 0x634, 0x636, 0x638 }; 254 static const u16 NCT6776_REG_FAN_MIN[] = { 0x63a, 0x63c, 0x63e, 0x640, 0x642}; 255 256 static const u16 NCT6775_REG_TEMP[] 257 = { 0x27, 0x150, 0x250, 0x73, 0x75, 0x77, 0x62b, 0x62c, 0x62d }; 258 static const u16 NCT6775_REG_TEMP_CONFIG[] 259 = { 0, 0x152, 0x252, 0, 0, 0, 0x628, 0x629, 0x62A }; 260 static const u16 NCT6775_REG_TEMP_HYST[] 261 = { 0x3a, 0x153, 0x253, 0, 0, 0, 0x673, 0x678, 0x67D }; 262 static const u16 NCT6775_REG_TEMP_OVER[] 263 = { 0x39, 0x155, 0x255, 0, 0, 0, 0x672, 0x677, 0x67C }; 264 static const u16 NCT6775_REG_TEMP_SOURCE[] 265 = { 0x621, 0x622, 0x623, 0x100, 0x200, 0x300, 0x624, 0x625, 0x626 }; 266 267 static const char *const w83667hg_b_temp_label[] = { 268 "SYSTIN", 269 "CPUTIN", 270 "AUXTIN", 271 "AMDTSI", 272 "PECI Agent 1", 273 "PECI Agent 2", 274 "PECI Agent 3", 275 "PECI Agent 4" 276 }; 277 278 static const char *const nct6775_temp_label[] = { 279 "", 280 "SYSTIN", 281 "CPUTIN", 282 "AUXTIN", 283 "AMD SB-TSI", 284 "PECI Agent 0", 285 "PECI Agent 1", 286 "PECI Agent 2", 287 "PECI Agent 3", 288 "PECI Agent 4", 289 "PECI Agent 5", 290 "PECI Agent 6", 291 "PECI Agent 7", 292 "PCH_CHIP_CPU_MAX_TEMP", 293 "PCH_CHIP_TEMP", 294 "PCH_CPU_TEMP", 295 "PCH_MCH_TEMP", 296 "PCH_DIM0_TEMP", 297 "PCH_DIM1_TEMP", 298 "PCH_DIM2_TEMP", 299 "PCH_DIM3_TEMP" 300 }; 301 302 static const char *const nct6776_temp_label[] = { 303 "", 304 "SYSTIN", 305 "CPUTIN", 306 "AUXTIN", 307 "SMBUSMASTER 0", 308 "SMBUSMASTER 1", 309 "SMBUSMASTER 2", 310 "SMBUSMASTER 3", 311 "SMBUSMASTER 4", 312 "SMBUSMASTER 5", 313 "SMBUSMASTER 6", 314 "SMBUSMASTER 7", 315 "PECI Agent 0", 316 "PECI Agent 1", 317 "PCH_CHIP_CPU_MAX_TEMP", 318 "PCH_CHIP_TEMP", 319 "PCH_CPU_TEMP", 320 "PCH_MCH_TEMP", 321 "PCH_DIM0_TEMP", 322 "PCH_DIM1_TEMP", 323 "PCH_DIM2_TEMP", 324 "PCH_DIM3_TEMP", 325 "BYTE_TEMP" 326 }; 327 328 #define NUM_REG_TEMP ARRAY_SIZE(NCT6775_REG_TEMP) 329 330 static int is_word_sized(u16 reg) 331 { 332 return ((((reg & 0xff00) == 0x100 333 || (reg & 0xff00) == 0x200) 334 && ((reg & 0x00ff) == 0x50 335 || (reg & 0x00ff) == 0x53 336 || (reg & 0x00ff) == 0x55)) 337 || (reg & 0xfff0) == 0x630 338 || reg == 0x640 || reg == 0x642 339 || ((reg & 0xfff0) == 0x650 340 && (reg & 0x000f) >= 0x06) 341 || reg == 0x73 || reg == 0x75 || reg == 0x77 342 ); 343 } 344 345 /* 346 * Conversions 347 */ 348 349 /* 1 is PWM mode, output in ms */ 350 static inline unsigned int step_time_from_reg(u8 reg, u8 mode) 351 { 352 return mode ? 100 * reg : 400 * reg; 353 } 354 355 static inline u8 step_time_to_reg(unsigned int msec, u8 mode) 356 { 357 return clamp_val((mode ? (msec + 50) / 100 : (msec + 200) / 400), 358 1, 255); 359 } 360 361 static unsigned int fan_from_reg8(u16 reg, unsigned int divreg) 362 { 363 if (reg == 0 || reg == 255) 364 return 0; 365 return 1350000U / (reg << divreg); 366 } 367 368 static unsigned int fan_from_reg13(u16 reg, unsigned int divreg) 369 { 370 if ((reg & 0xff1f) == 0xff1f) 371 return 0; 372 373 reg = (reg & 0x1f) | ((reg & 0xff00) >> 3); 374 375 if (reg == 0) 376 return 0; 377 378 return 1350000U / reg; 379 } 380 381 static unsigned int fan_from_reg16(u16 reg, unsigned int divreg) 382 { 383 if (reg == 0 || reg == 0xffff) 384 return 0; 385 386 /* 387 * Even though the registers are 16 bit wide, the fan divisor 388 * still applies. 389 */ 390 return 1350000U / (reg << divreg); 391 } 392 393 static inline unsigned int 394 div_from_reg(u8 reg) 395 { 396 return 1 << reg; 397 } 398 399 /* 400 * Some of the voltage inputs have internal scaling, the tables below 401 * contain 8 (the ADC LSB in mV) * scaling factor * 100 402 */ 403 static const u16 scale_in_common[10] = { 404 800, 800, 1600, 1600, 800, 800, 800, 1600, 1600, 800 405 }; 406 static const u16 scale_in_w83627uhg[9] = { 407 800, 800, 3328, 3424, 800, 800, 0, 3328, 3400 408 }; 409 410 static inline long in_from_reg(u8 reg, u8 nr, const u16 *scale_in) 411 { 412 return DIV_ROUND_CLOSEST(reg * scale_in[nr], 100); 413 } 414 415 static inline u8 in_to_reg(u32 val, u8 nr, const u16 *scale_in) 416 { 417 return clamp_val(DIV_ROUND_CLOSEST(val * 100, scale_in[nr]), 0, 255); 418 } 419 420 /* 421 * Data structures and manipulation thereof 422 */ 423 424 struct w83627ehf_data { 425 int addr; /* IO base of hw monitor block */ 426 const char *name; 427 428 struct device *hwmon_dev; 429 struct mutex lock; 430 431 u16 reg_temp[NUM_REG_TEMP]; 432 u16 reg_temp_over[NUM_REG_TEMP]; 433 u16 reg_temp_hyst[NUM_REG_TEMP]; 434 u16 reg_temp_config[NUM_REG_TEMP]; 435 u8 temp_src[NUM_REG_TEMP]; 436 const char * const *temp_label; 437 438 const u16 *REG_PWM; 439 const u16 *REG_TARGET; 440 const u16 *REG_FAN; 441 const u16 *REG_FAN_MIN; 442 const u16 *REG_FAN_START_OUTPUT; 443 const u16 *REG_FAN_STOP_OUTPUT; 444 const u16 *REG_FAN_STOP_TIME; 445 const u16 *REG_FAN_MAX_OUTPUT; 446 const u16 *REG_FAN_STEP_OUTPUT; 447 const u16 *scale_in; 448 449 unsigned int (*fan_from_reg)(u16 reg, unsigned int divreg); 450 unsigned int (*fan_from_reg_min)(u16 reg, unsigned int divreg); 451 452 struct mutex update_lock; 453 char valid; /* !=0 if following fields are valid */ 454 unsigned long last_updated; /* In jiffies */ 455 456 /* Register values */ 457 u8 bank; /* current register bank */ 458 u8 in_num; /* number of in inputs we have */ 459 u8 in[10]; /* Register value */ 460 u8 in_max[10]; /* Register value */ 461 u8 in_min[10]; /* Register value */ 462 unsigned int rpm[5]; 463 u16 fan_min[5]; 464 u8 fan_div[5]; 465 u8 has_fan; /* some fan inputs can be disabled */ 466 u8 has_fan_min; /* some fans don't have min register */ 467 bool has_fan_div; 468 u8 temp_type[3]; 469 s8 temp_offset[3]; 470 s16 temp[9]; 471 s16 temp_max[9]; 472 s16 temp_max_hyst[9]; 473 u32 alarms; 474 u8 caseopen; 475 476 u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */ 477 u8 pwm_enable[4]; /* 1->manual 478 * 2->thermal cruise mode (also called SmartFan I) 479 * 3->fan speed cruise mode 480 * 4->variable thermal cruise (also called 481 * SmartFan III) 482 * 5->enhanced variable thermal cruise (also called 483 * SmartFan IV) 484 */ 485 u8 pwm_enable_orig[4]; /* original value of pwm_enable */ 486 u8 pwm_num; /* number of pwm */ 487 u8 pwm[4]; 488 u8 target_temp[4]; 489 u8 tolerance[4]; 490 491 u8 fan_start_output[4]; /* minimum fan speed when spinning up */ 492 u8 fan_stop_output[4]; /* minimum fan speed when spinning down */ 493 u8 fan_stop_time[4]; /* time at minimum before disabling fan */ 494 u8 fan_max_output[4]; /* maximum fan speed */ 495 u8 fan_step_output[4]; /* rate of change output value */ 496 497 u8 vid; 498 u8 vrm; 499 500 u16 have_temp; 501 u16 have_temp_offset; 502 u8 in6_skip:1; 503 u8 temp3_val_only:1; 504 505 #ifdef CONFIG_PM 506 /* Remember extra register values over suspend/resume */ 507 u8 vbat; 508 u8 fandiv1; 509 u8 fandiv2; 510 #endif 511 }; 512 513 struct w83627ehf_sio_data { 514 int sioreg; 515 enum kinds kind; 516 }; 517 518 /* 519 * On older chips, only registers 0x50-0x5f are banked. 520 * On more recent chips, all registers are banked. 521 * Assume that is the case and set the bank number for each access. 522 * Cache the bank number so it only needs to be set if it changes. 523 */ 524 static inline void w83627ehf_set_bank(struct w83627ehf_data *data, u16 reg) 525 { 526 u8 bank = reg >> 8; 527 if (data->bank != bank) { 528 outb_p(W83627EHF_REG_BANK, data->addr + ADDR_REG_OFFSET); 529 outb_p(bank, data->addr + DATA_REG_OFFSET); 530 data->bank = bank; 531 } 532 } 533 534 static u16 w83627ehf_read_value(struct w83627ehf_data *data, u16 reg) 535 { 536 int res, word_sized = is_word_sized(reg); 537 538 mutex_lock(&data->lock); 539 540 w83627ehf_set_bank(data, reg); 541 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET); 542 res = inb_p(data->addr + DATA_REG_OFFSET); 543 if (word_sized) { 544 outb_p((reg & 0xff) + 1, 545 data->addr + ADDR_REG_OFFSET); 546 res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET); 547 } 548 549 mutex_unlock(&data->lock); 550 return res; 551 } 552 553 static int w83627ehf_write_value(struct w83627ehf_data *data, u16 reg, 554 u16 value) 555 { 556 int word_sized = is_word_sized(reg); 557 558 mutex_lock(&data->lock); 559 560 w83627ehf_set_bank(data, reg); 561 outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET); 562 if (word_sized) { 563 outb_p(value >> 8, data->addr + DATA_REG_OFFSET); 564 outb_p((reg & 0xff) + 1, 565 data->addr + ADDR_REG_OFFSET); 566 } 567 outb_p(value & 0xff, data->addr + DATA_REG_OFFSET); 568 569 mutex_unlock(&data->lock); 570 return 0; 571 } 572 573 /* We left-align 8-bit temperature values to make the code simpler */ 574 static u16 w83627ehf_read_temp(struct w83627ehf_data *data, u16 reg) 575 { 576 u16 res; 577 578 res = w83627ehf_read_value(data, reg); 579 if (!is_word_sized(reg)) 580 res <<= 8; 581 582 return res; 583 } 584 585 static int w83627ehf_write_temp(struct w83627ehf_data *data, u16 reg, 586 u16 value) 587 { 588 if (!is_word_sized(reg)) 589 value >>= 8; 590 return w83627ehf_write_value(data, reg, value); 591 } 592 593 /* This function assumes that the caller holds data->update_lock */ 594 static void nct6775_write_fan_div(struct w83627ehf_data *data, int nr) 595 { 596 u8 reg; 597 598 switch (nr) { 599 case 0: 600 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x70) 601 | (data->fan_div[0] & 0x7); 602 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg); 603 break; 604 case 1: 605 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x7) 606 | ((data->fan_div[1] << 4) & 0x70); 607 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg); 608 break; 609 case 2: 610 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x70) 611 | (data->fan_div[2] & 0x7); 612 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg); 613 break; 614 case 3: 615 reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x7) 616 | ((data->fan_div[3] << 4) & 0x70); 617 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg); 618 break; 619 } 620 } 621 622 /* This function assumes that the caller holds data->update_lock */ 623 static void w83627ehf_write_fan_div(struct w83627ehf_data *data, int nr) 624 { 625 u8 reg; 626 627 switch (nr) { 628 case 0: 629 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0xcf) 630 | ((data->fan_div[0] & 0x03) << 4); 631 /* fan5 input control bit is write only, compute the value */ 632 reg |= (data->has_fan & (1 << 4)) ? 1 : 0; 633 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg); 634 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xdf) 635 | ((data->fan_div[0] & 0x04) << 3); 636 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg); 637 break; 638 case 1: 639 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV1) & 0x3f) 640 | ((data->fan_div[1] & 0x03) << 6); 641 /* fan5 input control bit is write only, compute the value */ 642 reg |= (data->has_fan & (1 << 4)) ? 1 : 0; 643 w83627ehf_write_value(data, W83627EHF_REG_FANDIV1, reg); 644 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0xbf) 645 | ((data->fan_div[1] & 0x04) << 4); 646 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg); 647 break; 648 case 2: 649 reg = (w83627ehf_read_value(data, W83627EHF_REG_FANDIV2) & 0x3f) 650 | ((data->fan_div[2] & 0x03) << 6); 651 w83627ehf_write_value(data, W83627EHF_REG_FANDIV2, reg); 652 reg = (w83627ehf_read_value(data, W83627EHF_REG_VBAT) & 0x7f) 653 | ((data->fan_div[2] & 0x04) << 5); 654 w83627ehf_write_value(data, W83627EHF_REG_VBAT, reg); 655 break; 656 case 3: 657 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0xfc) 658 | (data->fan_div[3] & 0x03); 659 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg); 660 reg = (w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT) & 0x7f) 661 | ((data->fan_div[3] & 0x04) << 5); 662 w83627ehf_write_value(data, W83627EHF_REG_SMI_OVT, reg); 663 break; 664 case 4: 665 reg = (w83627ehf_read_value(data, W83627EHF_REG_DIODE) & 0x73) 666 | ((data->fan_div[4] & 0x03) << 2) 667 | ((data->fan_div[4] & 0x04) << 5); 668 w83627ehf_write_value(data, W83627EHF_REG_DIODE, reg); 669 break; 670 } 671 } 672 673 static void w83627ehf_write_fan_div_common(struct device *dev, 674 struct w83627ehf_data *data, int nr) 675 { 676 struct w83627ehf_sio_data *sio_data = dev->platform_data; 677 678 if (sio_data->kind == nct6776) 679 ; /* no dividers, do nothing */ 680 else if (sio_data->kind == nct6775) 681 nct6775_write_fan_div(data, nr); 682 else 683 w83627ehf_write_fan_div(data, nr); 684 } 685 686 static void nct6775_update_fan_div(struct w83627ehf_data *data) 687 { 688 u8 i; 689 690 i = w83627ehf_read_value(data, NCT6775_REG_FANDIV1); 691 data->fan_div[0] = i & 0x7; 692 data->fan_div[1] = (i & 0x70) >> 4; 693 i = w83627ehf_read_value(data, NCT6775_REG_FANDIV2); 694 data->fan_div[2] = i & 0x7; 695 if (data->has_fan & (1<<3)) 696 data->fan_div[3] = (i & 0x70) >> 4; 697 } 698 699 static void w83627ehf_update_fan_div(struct w83627ehf_data *data) 700 { 701 int i; 702 703 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1); 704 data->fan_div[0] = (i >> 4) & 0x03; 705 data->fan_div[1] = (i >> 6) & 0x03; 706 i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV2); 707 data->fan_div[2] = (i >> 6) & 0x03; 708 i = w83627ehf_read_value(data, W83627EHF_REG_VBAT); 709 data->fan_div[0] |= (i >> 3) & 0x04; 710 data->fan_div[1] |= (i >> 4) & 0x04; 711 data->fan_div[2] |= (i >> 5) & 0x04; 712 if (data->has_fan & ((1 << 3) | (1 << 4))) { 713 i = w83627ehf_read_value(data, W83627EHF_REG_DIODE); 714 data->fan_div[3] = i & 0x03; 715 data->fan_div[4] = ((i >> 2) & 0x03) 716 | ((i >> 5) & 0x04); 717 } 718 if (data->has_fan & (1 << 3)) { 719 i = w83627ehf_read_value(data, W83627EHF_REG_SMI_OVT); 720 data->fan_div[3] |= (i >> 5) & 0x04; 721 } 722 } 723 724 static void w83627ehf_update_fan_div_common(struct device *dev, 725 struct w83627ehf_data *data) 726 { 727 struct w83627ehf_sio_data *sio_data = dev->platform_data; 728 729 if (sio_data->kind == nct6776) 730 ; /* no dividers, do nothing */ 731 else if (sio_data->kind == nct6775) 732 nct6775_update_fan_div(data); 733 else 734 w83627ehf_update_fan_div(data); 735 } 736 737 static void nct6775_update_pwm(struct w83627ehf_data *data) 738 { 739 int i; 740 int pwmcfg, fanmodecfg; 741 742 for (i = 0; i < data->pwm_num; i++) { 743 pwmcfg = w83627ehf_read_value(data, 744 W83627EHF_REG_PWM_ENABLE[i]); 745 fanmodecfg = w83627ehf_read_value(data, 746 NCT6775_REG_FAN_MODE[i]); 747 data->pwm_mode[i] = 748 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1; 749 data->pwm_enable[i] = ((fanmodecfg >> 4) & 7) + 1; 750 data->tolerance[i] = fanmodecfg & 0x0f; 751 data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]); 752 } 753 } 754 755 static void w83627ehf_update_pwm(struct w83627ehf_data *data) 756 { 757 int i; 758 int pwmcfg = 0, tolerance = 0; /* shut up the compiler */ 759 760 for (i = 0; i < data->pwm_num; i++) { 761 if (!(data->has_fan & (1 << i))) 762 continue; 763 764 /* pwmcfg, tolerance mapped for i=0, i=1 to same reg */ 765 if (i != 1) { 766 pwmcfg = w83627ehf_read_value(data, 767 W83627EHF_REG_PWM_ENABLE[i]); 768 tolerance = w83627ehf_read_value(data, 769 W83627EHF_REG_TOLERANCE[i]); 770 } 771 data->pwm_mode[i] = 772 ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1; 773 data->pwm_enable[i] = ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i]) 774 & 3) + 1; 775 data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]); 776 777 data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0)) & 0x0f; 778 } 779 } 780 781 static void w83627ehf_update_pwm_common(struct device *dev, 782 struct w83627ehf_data *data) 783 { 784 struct w83627ehf_sio_data *sio_data = dev->platform_data; 785 786 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) 787 nct6775_update_pwm(data); 788 else 789 w83627ehf_update_pwm(data); 790 } 791 792 static struct w83627ehf_data *w83627ehf_update_device(struct device *dev) 793 { 794 struct w83627ehf_data *data = dev_get_drvdata(dev); 795 struct w83627ehf_sio_data *sio_data = dev->platform_data; 796 797 int i; 798 799 mutex_lock(&data->update_lock); 800 801 if (time_after(jiffies, data->last_updated + HZ + HZ/2) 802 || !data->valid) { 803 /* Fan clock dividers */ 804 w83627ehf_update_fan_div_common(dev, data); 805 806 /* Measured voltages and limits */ 807 for (i = 0; i < data->in_num; i++) { 808 if ((i == 6) && data->in6_skip) 809 continue; 810 811 data->in[i] = w83627ehf_read_value(data, 812 W83627EHF_REG_IN(i)); 813 data->in_min[i] = w83627ehf_read_value(data, 814 W83627EHF_REG_IN_MIN(i)); 815 data->in_max[i] = w83627ehf_read_value(data, 816 W83627EHF_REG_IN_MAX(i)); 817 } 818 819 /* Measured fan speeds and limits */ 820 for (i = 0; i < 5; i++) { 821 u16 reg; 822 823 if (!(data->has_fan & (1 << i))) 824 continue; 825 826 reg = w83627ehf_read_value(data, data->REG_FAN[i]); 827 data->rpm[i] = data->fan_from_reg(reg, 828 data->fan_div[i]); 829 830 if (data->has_fan_min & (1 << i)) 831 data->fan_min[i] = w83627ehf_read_value(data, 832 data->REG_FAN_MIN[i]); 833 834 /* 835 * If we failed to measure the fan speed and clock 836 * divider can be increased, let's try that for next 837 * time 838 */ 839 if (data->has_fan_div 840 && (reg >= 0xff || (sio_data->kind == nct6775 841 && reg == 0x00)) 842 && data->fan_div[i] < 0x07) { 843 dev_dbg(dev, 844 "Increasing fan%d clock divider from %u to %u\n", 845 i + 1, div_from_reg(data->fan_div[i]), 846 div_from_reg(data->fan_div[i] + 1)); 847 data->fan_div[i]++; 848 w83627ehf_write_fan_div_common(dev, data, i); 849 /* Preserve min limit if possible */ 850 if ((data->has_fan_min & (1 << i)) 851 && data->fan_min[i] >= 2 852 && data->fan_min[i] != 255) 853 w83627ehf_write_value(data, 854 data->REG_FAN_MIN[i], 855 (data->fan_min[i] /= 2)); 856 } 857 } 858 859 w83627ehf_update_pwm_common(dev, data); 860 861 for (i = 0; i < data->pwm_num; i++) { 862 if (!(data->has_fan & (1 << i))) 863 continue; 864 865 data->fan_start_output[i] = 866 w83627ehf_read_value(data, 867 data->REG_FAN_START_OUTPUT[i]); 868 data->fan_stop_output[i] = 869 w83627ehf_read_value(data, 870 data->REG_FAN_STOP_OUTPUT[i]); 871 data->fan_stop_time[i] = 872 w83627ehf_read_value(data, 873 data->REG_FAN_STOP_TIME[i]); 874 875 if (data->REG_FAN_MAX_OUTPUT && 876 data->REG_FAN_MAX_OUTPUT[i] != 0xff) 877 data->fan_max_output[i] = 878 w83627ehf_read_value(data, 879 data->REG_FAN_MAX_OUTPUT[i]); 880 881 if (data->REG_FAN_STEP_OUTPUT && 882 data->REG_FAN_STEP_OUTPUT[i] != 0xff) 883 data->fan_step_output[i] = 884 w83627ehf_read_value(data, 885 data->REG_FAN_STEP_OUTPUT[i]); 886 887 data->target_temp[i] = 888 w83627ehf_read_value(data, 889 data->REG_TARGET[i]) & 890 (data->pwm_mode[i] == 1 ? 0x7f : 0xff); 891 } 892 893 /* Measured temperatures and limits */ 894 for (i = 0; i < NUM_REG_TEMP; i++) { 895 if (!(data->have_temp & (1 << i))) 896 continue; 897 data->temp[i] = w83627ehf_read_temp(data, 898 data->reg_temp[i]); 899 if (data->reg_temp_over[i]) 900 data->temp_max[i] 901 = w83627ehf_read_temp(data, 902 data->reg_temp_over[i]); 903 if (data->reg_temp_hyst[i]) 904 data->temp_max_hyst[i] 905 = w83627ehf_read_temp(data, 906 data->reg_temp_hyst[i]); 907 if (i > 2) 908 continue; 909 if (data->have_temp_offset & (1 << i)) 910 data->temp_offset[i] 911 = w83627ehf_read_value(data, 912 W83627EHF_REG_TEMP_OFFSET[i]); 913 } 914 915 data->alarms = w83627ehf_read_value(data, 916 W83627EHF_REG_ALARM1) | 917 (w83627ehf_read_value(data, 918 W83627EHF_REG_ALARM2) << 8) | 919 (w83627ehf_read_value(data, 920 W83627EHF_REG_ALARM3) << 16); 921 922 data->caseopen = w83627ehf_read_value(data, 923 W83627EHF_REG_CASEOPEN_DET); 924 925 data->last_updated = jiffies; 926 data->valid = 1; 927 } 928 929 mutex_unlock(&data->update_lock); 930 return data; 931 } 932 933 /* 934 * Sysfs callback functions 935 */ 936 #define show_in_reg(reg) \ 937 static ssize_t \ 938 show_##reg(struct device *dev, struct device_attribute *attr, \ 939 char *buf) \ 940 { \ 941 struct w83627ehf_data *data = w83627ehf_update_device(dev); \ 942 struct sensor_device_attribute *sensor_attr = \ 943 to_sensor_dev_attr(attr); \ 944 int nr = sensor_attr->index; \ 945 return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr, \ 946 data->scale_in)); \ 947 } 948 show_in_reg(in) 949 show_in_reg(in_min) 950 show_in_reg(in_max) 951 952 #define store_in_reg(REG, reg) \ 953 static ssize_t \ 954 store_in_##reg(struct device *dev, struct device_attribute *attr, \ 955 const char *buf, size_t count) \ 956 { \ 957 struct w83627ehf_data *data = dev_get_drvdata(dev); \ 958 struct sensor_device_attribute *sensor_attr = \ 959 to_sensor_dev_attr(attr); \ 960 int nr = sensor_attr->index; \ 961 unsigned long val; \ 962 int err; \ 963 err = kstrtoul(buf, 10, &val); \ 964 if (err < 0) \ 965 return err; \ 966 mutex_lock(&data->update_lock); \ 967 data->in_##reg[nr] = in_to_reg(val, nr, data->scale_in); \ 968 w83627ehf_write_value(data, W83627EHF_REG_IN_##REG(nr), \ 969 data->in_##reg[nr]); \ 970 mutex_unlock(&data->update_lock); \ 971 return count; \ 972 } 973 974 store_in_reg(MIN, min) 975 store_in_reg(MAX, max) 976 977 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 978 char *buf) 979 { 980 struct w83627ehf_data *data = w83627ehf_update_device(dev); 981 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 982 int nr = sensor_attr->index; 983 return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01); 984 } 985 986 static struct sensor_device_attribute sda_in_input[] = { 987 SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0), 988 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1), 989 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2), 990 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3), 991 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4), 992 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5), 993 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6), 994 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7), 995 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8), 996 SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9), 997 }; 998 999 static struct sensor_device_attribute sda_in_alarm[] = { 1000 SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0), 1001 SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1), 1002 SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2), 1003 SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3), 1004 SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8), 1005 SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21), 1006 SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20), 1007 SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16), 1008 SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17), 1009 SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 19), 1010 }; 1011 1012 static struct sensor_device_attribute sda_in_min[] = { 1013 SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0), 1014 SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1), 1015 SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2), 1016 SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3), 1017 SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4), 1018 SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5), 1019 SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6), 1020 SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7), 1021 SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8), 1022 SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9), 1023 }; 1024 1025 static struct sensor_device_attribute sda_in_max[] = { 1026 SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0), 1027 SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1), 1028 SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2), 1029 SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3), 1030 SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4), 1031 SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5), 1032 SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6), 1033 SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7), 1034 SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8), 1035 SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9), 1036 }; 1037 1038 static ssize_t 1039 show_fan(struct device *dev, struct device_attribute *attr, char *buf) 1040 { 1041 struct w83627ehf_data *data = w83627ehf_update_device(dev); 1042 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1043 int nr = sensor_attr->index; 1044 return sprintf(buf, "%d\n", data->rpm[nr]); 1045 } 1046 1047 static ssize_t 1048 show_fan_min(struct device *dev, struct device_attribute *attr, char *buf) 1049 { 1050 struct w83627ehf_data *data = w83627ehf_update_device(dev); 1051 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1052 int nr = sensor_attr->index; 1053 return sprintf(buf, "%d\n", 1054 data->fan_from_reg_min(data->fan_min[nr], 1055 data->fan_div[nr])); 1056 } 1057 1058 static ssize_t 1059 show_fan_div(struct device *dev, struct device_attribute *attr, 1060 char *buf) 1061 { 1062 struct w83627ehf_data *data = w83627ehf_update_device(dev); 1063 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1064 int nr = sensor_attr->index; 1065 return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr])); 1066 } 1067 1068 static ssize_t 1069 store_fan_min(struct device *dev, struct device_attribute *attr, 1070 const char *buf, size_t count) 1071 { 1072 struct w83627ehf_data *data = dev_get_drvdata(dev); 1073 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1074 int nr = sensor_attr->index; 1075 unsigned long val; 1076 int err; 1077 unsigned int reg; 1078 u8 new_div; 1079 1080 err = kstrtoul(buf, 10, &val); 1081 if (err < 0) 1082 return err; 1083 1084 mutex_lock(&data->update_lock); 1085 if (!data->has_fan_div) { 1086 /* 1087 * Only NCT6776F for now, so we know that this is a 13 bit 1088 * register 1089 */ 1090 if (!val) { 1091 val = 0xff1f; 1092 } else { 1093 if (val > 1350000U) 1094 val = 135000U; 1095 val = 1350000U / val; 1096 val = (val & 0x1f) | ((val << 3) & 0xff00); 1097 } 1098 data->fan_min[nr] = val; 1099 goto done; /* Leave fan divider alone */ 1100 } 1101 if (!val) { 1102 /* No min limit, alarm disabled */ 1103 data->fan_min[nr] = 255; 1104 new_div = data->fan_div[nr]; /* No change */ 1105 dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1); 1106 } else if ((reg = 1350000U / val) >= 128 * 255) { 1107 /* 1108 * Speed below this value cannot possibly be represented, 1109 * even with the highest divider (128) 1110 */ 1111 data->fan_min[nr] = 254; 1112 new_div = 7; /* 128 == (1 << 7) */ 1113 dev_warn(dev, 1114 "fan%u low limit %lu below minimum %u, set to minimum\n", 1115 nr + 1, val, data->fan_from_reg_min(254, 7)); 1116 } else if (!reg) { 1117 /* 1118 * Speed above this value cannot possibly be represented, 1119 * even with the lowest divider (1) 1120 */ 1121 data->fan_min[nr] = 1; 1122 new_div = 0; /* 1 == (1 << 0) */ 1123 dev_warn(dev, 1124 "fan%u low limit %lu above maximum %u, set to maximum\n", 1125 nr + 1, val, data->fan_from_reg_min(1, 0)); 1126 } else { 1127 /* 1128 * Automatically pick the best divider, i.e. the one such 1129 * that the min limit will correspond to a register value 1130 * in the 96..192 range 1131 */ 1132 new_div = 0; 1133 while (reg > 192 && new_div < 7) { 1134 reg >>= 1; 1135 new_div++; 1136 } 1137 data->fan_min[nr] = reg; 1138 } 1139 1140 /* 1141 * Write both the fan clock divider (if it changed) and the new 1142 * fan min (unconditionally) 1143 */ 1144 if (new_div != data->fan_div[nr]) { 1145 dev_dbg(dev, "fan%u clock divider changed from %u to %u\n", 1146 nr + 1, div_from_reg(data->fan_div[nr]), 1147 div_from_reg(new_div)); 1148 data->fan_div[nr] = new_div; 1149 w83627ehf_write_fan_div_common(dev, data, nr); 1150 /* Give the chip time to sample a new speed value */ 1151 data->last_updated = jiffies; 1152 } 1153 done: 1154 w83627ehf_write_value(data, data->REG_FAN_MIN[nr], 1155 data->fan_min[nr]); 1156 mutex_unlock(&data->update_lock); 1157 1158 return count; 1159 } 1160 1161 static struct sensor_device_attribute sda_fan_input[] = { 1162 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), 1163 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), 1164 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), 1165 SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3), 1166 SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4), 1167 }; 1168 1169 static struct sensor_device_attribute sda_fan_alarm[] = { 1170 SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6), 1171 SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7), 1172 SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11), 1173 SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10), 1174 SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23), 1175 }; 1176 1177 static struct sensor_device_attribute sda_fan_min[] = { 1178 SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, 1179 store_fan_min, 0), 1180 SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, 1181 store_fan_min, 1), 1182 SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, 1183 store_fan_min, 2), 1184 SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min, 1185 store_fan_min, 3), 1186 SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min, 1187 store_fan_min, 4), 1188 }; 1189 1190 static struct sensor_device_attribute sda_fan_div[] = { 1191 SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0), 1192 SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1), 1193 SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2), 1194 SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3), 1195 SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4), 1196 }; 1197 1198 static ssize_t 1199 show_temp_label(struct device *dev, struct device_attribute *attr, char *buf) 1200 { 1201 struct w83627ehf_data *data = w83627ehf_update_device(dev); 1202 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1203 int nr = sensor_attr->index; 1204 return sprintf(buf, "%s\n", data->temp_label[data->temp_src[nr]]); 1205 } 1206 1207 #define show_temp_reg(addr, reg) \ 1208 static ssize_t \ 1209 show_##reg(struct device *dev, struct device_attribute *attr, \ 1210 char *buf) \ 1211 { \ 1212 struct w83627ehf_data *data = w83627ehf_update_device(dev); \ 1213 struct sensor_device_attribute *sensor_attr = \ 1214 to_sensor_dev_attr(attr); \ 1215 int nr = sensor_attr->index; \ 1216 return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->reg[nr])); \ 1217 } 1218 show_temp_reg(reg_temp, temp); 1219 show_temp_reg(reg_temp_over, temp_max); 1220 show_temp_reg(reg_temp_hyst, temp_max_hyst); 1221 1222 #define store_temp_reg(addr, reg) \ 1223 static ssize_t \ 1224 store_##reg(struct device *dev, struct device_attribute *attr, \ 1225 const char *buf, size_t count) \ 1226 { \ 1227 struct w83627ehf_data *data = dev_get_drvdata(dev); \ 1228 struct sensor_device_attribute *sensor_attr = \ 1229 to_sensor_dev_attr(attr); \ 1230 int nr = sensor_attr->index; \ 1231 int err; \ 1232 long val; \ 1233 err = kstrtol(buf, 10, &val); \ 1234 if (err < 0) \ 1235 return err; \ 1236 mutex_lock(&data->update_lock); \ 1237 data->reg[nr] = LM75_TEMP_TO_REG(val); \ 1238 w83627ehf_write_temp(data, data->addr[nr], data->reg[nr]); \ 1239 mutex_unlock(&data->update_lock); \ 1240 return count; \ 1241 } 1242 store_temp_reg(reg_temp_over, temp_max); 1243 store_temp_reg(reg_temp_hyst, temp_max_hyst); 1244 1245 static ssize_t 1246 show_temp_offset(struct device *dev, struct device_attribute *attr, char *buf) 1247 { 1248 struct w83627ehf_data *data = w83627ehf_update_device(dev); 1249 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1250 1251 return sprintf(buf, "%d\n", 1252 data->temp_offset[sensor_attr->index] * 1000); 1253 } 1254 1255 static ssize_t 1256 store_temp_offset(struct device *dev, struct device_attribute *attr, 1257 const char *buf, size_t count) 1258 { 1259 struct w83627ehf_data *data = dev_get_drvdata(dev); 1260 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1261 int nr = sensor_attr->index; 1262 long val; 1263 int err; 1264 1265 err = kstrtol(buf, 10, &val); 1266 if (err < 0) 1267 return err; 1268 1269 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127); 1270 1271 mutex_lock(&data->update_lock); 1272 data->temp_offset[nr] = val; 1273 w83627ehf_write_value(data, W83627EHF_REG_TEMP_OFFSET[nr], val); 1274 mutex_unlock(&data->update_lock); 1275 return count; 1276 } 1277 1278 static ssize_t 1279 show_temp_type(struct device *dev, struct device_attribute *attr, char *buf) 1280 { 1281 struct w83627ehf_data *data = w83627ehf_update_device(dev); 1282 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1283 int nr = sensor_attr->index; 1284 return sprintf(buf, "%d\n", (int)data->temp_type[nr]); 1285 } 1286 1287 static struct sensor_device_attribute sda_temp_input[] = { 1288 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0), 1289 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1), 1290 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2), 1291 SENSOR_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3), 1292 SENSOR_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4), 1293 SENSOR_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5), 1294 SENSOR_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6), 1295 SENSOR_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7), 1296 SENSOR_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8), 1297 }; 1298 1299 static struct sensor_device_attribute sda_temp_label[] = { 1300 SENSOR_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0), 1301 SENSOR_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1), 1302 SENSOR_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2), 1303 SENSOR_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3), 1304 SENSOR_ATTR(temp5_label, S_IRUGO, show_temp_label, NULL, 4), 1305 SENSOR_ATTR(temp6_label, S_IRUGO, show_temp_label, NULL, 5), 1306 SENSOR_ATTR(temp7_label, S_IRUGO, show_temp_label, NULL, 6), 1307 SENSOR_ATTR(temp8_label, S_IRUGO, show_temp_label, NULL, 7), 1308 SENSOR_ATTR(temp9_label, S_IRUGO, show_temp_label, NULL, 8), 1309 }; 1310 1311 static struct sensor_device_attribute sda_temp_max[] = { 1312 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp_max, 1313 store_temp_max, 0), 1314 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max, 1315 store_temp_max, 1), 1316 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max, 1317 store_temp_max, 2), 1318 SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR, show_temp_max, 1319 store_temp_max, 3), 1320 SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR, show_temp_max, 1321 store_temp_max, 4), 1322 SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR, show_temp_max, 1323 store_temp_max, 5), 1324 SENSOR_ATTR(temp7_max, S_IRUGO | S_IWUSR, show_temp_max, 1325 store_temp_max, 6), 1326 SENSOR_ATTR(temp8_max, S_IRUGO | S_IWUSR, show_temp_max, 1327 store_temp_max, 7), 1328 SENSOR_ATTR(temp9_max, S_IRUGO | S_IWUSR, show_temp_max, 1329 store_temp_max, 8), 1330 }; 1331 1332 static struct sensor_device_attribute sda_temp_max_hyst[] = { 1333 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, 1334 store_temp_max_hyst, 0), 1335 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, 1336 store_temp_max_hyst, 1), 1337 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, 1338 store_temp_max_hyst, 2), 1339 SENSOR_ATTR(temp4_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, 1340 store_temp_max_hyst, 3), 1341 SENSOR_ATTR(temp5_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, 1342 store_temp_max_hyst, 4), 1343 SENSOR_ATTR(temp6_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, 1344 store_temp_max_hyst, 5), 1345 SENSOR_ATTR(temp7_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, 1346 store_temp_max_hyst, 6), 1347 SENSOR_ATTR(temp8_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, 1348 store_temp_max_hyst, 7), 1349 SENSOR_ATTR(temp9_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, 1350 store_temp_max_hyst, 8), 1351 }; 1352 1353 static struct sensor_device_attribute sda_temp_alarm[] = { 1354 SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4), 1355 SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5), 1356 SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13), 1357 }; 1358 1359 static struct sensor_device_attribute sda_temp_type[] = { 1360 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0), 1361 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1), 1362 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2), 1363 }; 1364 1365 static struct sensor_device_attribute sda_temp_offset[] = { 1366 SENSOR_ATTR(temp1_offset, S_IRUGO | S_IWUSR, show_temp_offset, 1367 store_temp_offset, 0), 1368 SENSOR_ATTR(temp2_offset, S_IRUGO | S_IWUSR, show_temp_offset, 1369 store_temp_offset, 1), 1370 SENSOR_ATTR(temp3_offset, S_IRUGO | S_IWUSR, show_temp_offset, 1371 store_temp_offset, 2), 1372 }; 1373 1374 #define show_pwm_reg(reg) \ 1375 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ 1376 char *buf) \ 1377 { \ 1378 struct w83627ehf_data *data = w83627ehf_update_device(dev); \ 1379 struct sensor_device_attribute *sensor_attr = \ 1380 to_sensor_dev_attr(attr); \ 1381 int nr = sensor_attr->index; \ 1382 return sprintf(buf, "%d\n", data->reg[nr]); \ 1383 } 1384 1385 show_pwm_reg(pwm_mode) 1386 show_pwm_reg(pwm_enable) 1387 show_pwm_reg(pwm) 1388 1389 static ssize_t 1390 store_pwm_mode(struct device *dev, struct device_attribute *attr, 1391 const char *buf, size_t count) 1392 { 1393 struct w83627ehf_data *data = dev_get_drvdata(dev); 1394 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1395 struct w83627ehf_sio_data *sio_data = dev->platform_data; 1396 int nr = sensor_attr->index; 1397 unsigned long val; 1398 int err; 1399 u16 reg; 1400 1401 err = kstrtoul(buf, 10, &val); 1402 if (err < 0) 1403 return err; 1404 1405 if (val > 1) 1406 return -EINVAL; 1407 1408 /* On NCT67766F, DC mode is only supported for pwm1 */ 1409 if (sio_data->kind == nct6776 && nr && val != 1) 1410 return -EINVAL; 1411 1412 mutex_lock(&data->update_lock); 1413 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]); 1414 data->pwm_mode[nr] = val; 1415 reg &= ~(1 << W83627EHF_PWM_MODE_SHIFT[nr]); 1416 if (!val) 1417 reg |= 1 << W83627EHF_PWM_MODE_SHIFT[nr]; 1418 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg); 1419 mutex_unlock(&data->update_lock); 1420 return count; 1421 } 1422 1423 static ssize_t 1424 store_pwm(struct device *dev, struct device_attribute *attr, 1425 const char *buf, size_t count) 1426 { 1427 struct w83627ehf_data *data = dev_get_drvdata(dev); 1428 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1429 int nr = sensor_attr->index; 1430 unsigned long val; 1431 int err; 1432 1433 err = kstrtoul(buf, 10, &val); 1434 if (err < 0) 1435 return err; 1436 1437 val = clamp_val(val, 0, 255); 1438 1439 mutex_lock(&data->update_lock); 1440 data->pwm[nr] = val; 1441 w83627ehf_write_value(data, data->REG_PWM[nr], val); 1442 mutex_unlock(&data->update_lock); 1443 return count; 1444 } 1445 1446 static ssize_t 1447 store_pwm_enable(struct device *dev, struct device_attribute *attr, 1448 const char *buf, size_t count) 1449 { 1450 struct w83627ehf_data *data = dev_get_drvdata(dev); 1451 struct w83627ehf_sio_data *sio_data = dev->platform_data; 1452 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1453 int nr = sensor_attr->index; 1454 unsigned long val; 1455 int err; 1456 u16 reg; 1457 1458 err = kstrtoul(buf, 10, &val); 1459 if (err < 0) 1460 return err; 1461 1462 if (!val || (val > 4 && val != data->pwm_enable_orig[nr])) 1463 return -EINVAL; 1464 /* SmartFan III mode is not supported on NCT6776F */ 1465 if (sio_data->kind == nct6776 && val == 4) 1466 return -EINVAL; 1467 1468 mutex_lock(&data->update_lock); 1469 data->pwm_enable[nr] = val; 1470 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) { 1471 reg = w83627ehf_read_value(data, 1472 NCT6775_REG_FAN_MODE[nr]); 1473 reg &= 0x0f; 1474 reg |= (val - 1) << 4; 1475 w83627ehf_write_value(data, 1476 NCT6775_REG_FAN_MODE[nr], reg); 1477 } else { 1478 reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]); 1479 reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[nr]); 1480 reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[nr]; 1481 w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg); 1482 } 1483 mutex_unlock(&data->update_lock); 1484 return count; 1485 } 1486 1487 1488 #define show_tol_temp(reg) \ 1489 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ 1490 char *buf) \ 1491 { \ 1492 struct w83627ehf_data *data = w83627ehf_update_device(dev); \ 1493 struct sensor_device_attribute *sensor_attr = \ 1494 to_sensor_dev_attr(attr); \ 1495 int nr = sensor_attr->index; \ 1496 return sprintf(buf, "%d\n", data->reg[nr] * 1000); \ 1497 } 1498 1499 show_tol_temp(tolerance) 1500 show_tol_temp(target_temp) 1501 1502 static ssize_t 1503 store_target_temp(struct device *dev, struct device_attribute *attr, 1504 const char *buf, size_t count) 1505 { 1506 struct w83627ehf_data *data = dev_get_drvdata(dev); 1507 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1508 int nr = sensor_attr->index; 1509 long val; 1510 int err; 1511 1512 err = kstrtol(buf, 10, &val); 1513 if (err < 0) 1514 return err; 1515 1516 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 127); 1517 1518 mutex_lock(&data->update_lock); 1519 data->target_temp[nr] = val; 1520 w83627ehf_write_value(data, data->REG_TARGET[nr], val); 1521 mutex_unlock(&data->update_lock); 1522 return count; 1523 } 1524 1525 static ssize_t 1526 store_tolerance(struct device *dev, struct device_attribute *attr, 1527 const char *buf, size_t count) 1528 { 1529 struct w83627ehf_data *data = dev_get_drvdata(dev); 1530 struct w83627ehf_sio_data *sio_data = dev->platform_data; 1531 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); 1532 int nr = sensor_attr->index; 1533 u16 reg; 1534 long val; 1535 int err; 1536 1537 err = kstrtol(buf, 10, &val); 1538 if (err < 0) 1539 return err; 1540 1541 /* Limit the temp to 0C - 15C */ 1542 val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 15); 1543 1544 mutex_lock(&data->update_lock); 1545 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) { 1546 /* Limit tolerance further for NCT6776F */ 1547 if (sio_data->kind == nct6776 && val > 7) 1548 val = 7; 1549 reg = w83627ehf_read_value(data, NCT6775_REG_FAN_MODE[nr]); 1550 reg = (reg & 0xf0) | val; 1551 w83627ehf_write_value(data, NCT6775_REG_FAN_MODE[nr], reg); 1552 } else { 1553 reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]); 1554 if (nr == 1) 1555 reg = (reg & 0x0f) | (val << 4); 1556 else 1557 reg = (reg & 0xf0) | val; 1558 w83627ehf_write_value(data, W83627EHF_REG_TOLERANCE[nr], reg); 1559 } 1560 data->tolerance[nr] = val; 1561 mutex_unlock(&data->update_lock); 1562 return count; 1563 } 1564 1565 static struct sensor_device_attribute sda_pwm[] = { 1566 SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0), 1567 SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1), 1568 SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2), 1569 SENSOR_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3), 1570 }; 1571 1572 static struct sensor_device_attribute sda_pwm_mode[] = { 1573 SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode, 1574 store_pwm_mode, 0), 1575 SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode, 1576 store_pwm_mode, 1), 1577 SENSOR_ATTR(pwm3_mode, S_IWUSR | S_IRUGO, show_pwm_mode, 1578 store_pwm_mode, 2), 1579 SENSOR_ATTR(pwm4_mode, S_IWUSR | S_IRUGO, show_pwm_mode, 1580 store_pwm_mode, 3), 1581 }; 1582 1583 static struct sensor_device_attribute sda_pwm_enable[] = { 1584 SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable, 1585 store_pwm_enable, 0), 1586 SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable, 1587 store_pwm_enable, 1), 1588 SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable, 1589 store_pwm_enable, 2), 1590 SENSOR_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_enable, 1591 store_pwm_enable, 3), 1592 }; 1593 1594 static struct sensor_device_attribute sda_target_temp[] = { 1595 SENSOR_ATTR(pwm1_target, S_IWUSR | S_IRUGO, show_target_temp, 1596 store_target_temp, 0), 1597 SENSOR_ATTR(pwm2_target, S_IWUSR | S_IRUGO, show_target_temp, 1598 store_target_temp, 1), 1599 SENSOR_ATTR(pwm3_target, S_IWUSR | S_IRUGO, show_target_temp, 1600 store_target_temp, 2), 1601 SENSOR_ATTR(pwm4_target, S_IWUSR | S_IRUGO, show_target_temp, 1602 store_target_temp, 3), 1603 }; 1604 1605 static struct sensor_device_attribute sda_tolerance[] = { 1606 SENSOR_ATTR(pwm1_tolerance, S_IWUSR | S_IRUGO, show_tolerance, 1607 store_tolerance, 0), 1608 SENSOR_ATTR(pwm2_tolerance, S_IWUSR | S_IRUGO, show_tolerance, 1609 store_tolerance, 1), 1610 SENSOR_ATTR(pwm3_tolerance, S_IWUSR | S_IRUGO, show_tolerance, 1611 store_tolerance, 2), 1612 SENSOR_ATTR(pwm4_tolerance, S_IWUSR | S_IRUGO, show_tolerance, 1613 store_tolerance, 3), 1614 }; 1615 1616 /* Smart Fan registers */ 1617 1618 #define fan_functions(reg, REG) \ 1619 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ 1620 char *buf) \ 1621 { \ 1622 struct w83627ehf_data *data = w83627ehf_update_device(dev); \ 1623 struct sensor_device_attribute *sensor_attr = \ 1624 to_sensor_dev_attr(attr); \ 1625 int nr = sensor_attr->index; \ 1626 return sprintf(buf, "%d\n", data->reg[nr]); \ 1627 } \ 1628 static ssize_t \ 1629 store_##reg(struct device *dev, struct device_attribute *attr, \ 1630 const char *buf, size_t count) \ 1631 { \ 1632 struct w83627ehf_data *data = dev_get_drvdata(dev); \ 1633 struct sensor_device_attribute *sensor_attr = \ 1634 to_sensor_dev_attr(attr); \ 1635 int nr = sensor_attr->index; \ 1636 unsigned long val; \ 1637 int err; \ 1638 err = kstrtoul(buf, 10, &val); \ 1639 if (err < 0) \ 1640 return err; \ 1641 val = clamp_val(val, 1, 255); \ 1642 mutex_lock(&data->update_lock); \ 1643 data->reg[nr] = val; \ 1644 w83627ehf_write_value(data, data->REG_##REG[nr], val); \ 1645 mutex_unlock(&data->update_lock); \ 1646 return count; \ 1647 } 1648 1649 fan_functions(fan_start_output, FAN_START_OUTPUT) 1650 fan_functions(fan_stop_output, FAN_STOP_OUTPUT) 1651 fan_functions(fan_max_output, FAN_MAX_OUTPUT) 1652 fan_functions(fan_step_output, FAN_STEP_OUTPUT) 1653 1654 #define fan_time_functions(reg, REG) \ 1655 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ 1656 char *buf) \ 1657 { \ 1658 struct w83627ehf_data *data = w83627ehf_update_device(dev); \ 1659 struct sensor_device_attribute *sensor_attr = \ 1660 to_sensor_dev_attr(attr); \ 1661 int nr = sensor_attr->index; \ 1662 return sprintf(buf, "%d\n", \ 1663 step_time_from_reg(data->reg[nr], \ 1664 data->pwm_mode[nr])); \ 1665 } \ 1666 \ 1667 static ssize_t \ 1668 store_##reg(struct device *dev, struct device_attribute *attr, \ 1669 const char *buf, size_t count) \ 1670 { \ 1671 struct w83627ehf_data *data = dev_get_drvdata(dev); \ 1672 struct sensor_device_attribute *sensor_attr = \ 1673 to_sensor_dev_attr(attr); \ 1674 int nr = sensor_attr->index; \ 1675 unsigned long val; \ 1676 int err; \ 1677 err = kstrtoul(buf, 10, &val); \ 1678 if (err < 0) \ 1679 return err; \ 1680 val = step_time_to_reg(val, data->pwm_mode[nr]); \ 1681 mutex_lock(&data->update_lock); \ 1682 data->reg[nr] = val; \ 1683 w83627ehf_write_value(data, data->REG_##REG[nr], val); \ 1684 mutex_unlock(&data->update_lock); \ 1685 return count; \ 1686 } \ 1687 1688 fan_time_functions(fan_stop_time, FAN_STOP_TIME) 1689 1690 static ssize_t show_name(struct device *dev, struct device_attribute *attr, 1691 char *buf) 1692 { 1693 struct w83627ehf_data *data = dev_get_drvdata(dev); 1694 1695 return sprintf(buf, "%s\n", data->name); 1696 } 1697 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); 1698 1699 static struct sensor_device_attribute sda_sf3_arrays_fan4[] = { 1700 SENSOR_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time, 1701 store_fan_stop_time, 3), 1702 SENSOR_ATTR(pwm4_start_output, S_IWUSR | S_IRUGO, show_fan_start_output, 1703 store_fan_start_output, 3), 1704 SENSOR_ATTR(pwm4_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output, 1705 store_fan_stop_output, 3), 1706 SENSOR_ATTR(pwm4_max_output, S_IWUSR | S_IRUGO, show_fan_max_output, 1707 store_fan_max_output, 3), 1708 SENSOR_ATTR(pwm4_step_output, S_IWUSR | S_IRUGO, show_fan_step_output, 1709 store_fan_step_output, 3), 1710 }; 1711 1712 static struct sensor_device_attribute sda_sf3_arrays_fan3[] = { 1713 SENSOR_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time, 1714 store_fan_stop_time, 2), 1715 SENSOR_ATTR(pwm3_start_output, S_IWUSR | S_IRUGO, show_fan_start_output, 1716 store_fan_start_output, 2), 1717 SENSOR_ATTR(pwm3_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output, 1718 store_fan_stop_output, 2), 1719 }; 1720 1721 static struct sensor_device_attribute sda_sf3_arrays[] = { 1722 SENSOR_ATTR(pwm1_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time, 1723 store_fan_stop_time, 0), 1724 SENSOR_ATTR(pwm2_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time, 1725 store_fan_stop_time, 1), 1726 SENSOR_ATTR(pwm1_start_output, S_IWUSR | S_IRUGO, show_fan_start_output, 1727 store_fan_start_output, 0), 1728 SENSOR_ATTR(pwm2_start_output, S_IWUSR | S_IRUGO, show_fan_start_output, 1729 store_fan_start_output, 1), 1730 SENSOR_ATTR(pwm1_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output, 1731 store_fan_stop_output, 0), 1732 SENSOR_ATTR(pwm2_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output, 1733 store_fan_stop_output, 1), 1734 }; 1735 1736 1737 /* 1738 * pwm1 and pwm3 don't support max and step settings on all chips. 1739 * Need to check support while generating/removing attribute files. 1740 */ 1741 static struct sensor_device_attribute sda_sf3_max_step_arrays[] = { 1742 SENSOR_ATTR(pwm1_max_output, S_IWUSR | S_IRUGO, show_fan_max_output, 1743 store_fan_max_output, 0), 1744 SENSOR_ATTR(pwm1_step_output, S_IWUSR | S_IRUGO, show_fan_step_output, 1745 store_fan_step_output, 0), 1746 SENSOR_ATTR(pwm2_max_output, S_IWUSR | S_IRUGO, show_fan_max_output, 1747 store_fan_max_output, 1), 1748 SENSOR_ATTR(pwm2_step_output, S_IWUSR | S_IRUGO, show_fan_step_output, 1749 store_fan_step_output, 1), 1750 SENSOR_ATTR(pwm3_max_output, S_IWUSR | S_IRUGO, show_fan_max_output, 1751 store_fan_max_output, 2), 1752 SENSOR_ATTR(pwm3_step_output, S_IWUSR | S_IRUGO, show_fan_step_output, 1753 store_fan_step_output, 2), 1754 }; 1755 1756 static ssize_t 1757 show_vid(struct device *dev, struct device_attribute *attr, char *buf) 1758 { 1759 struct w83627ehf_data *data = dev_get_drvdata(dev); 1760 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 1761 } 1762 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); 1763 1764 1765 /* Case open detection */ 1766 1767 static ssize_t 1768 show_caseopen(struct device *dev, struct device_attribute *attr, char *buf) 1769 { 1770 struct w83627ehf_data *data = w83627ehf_update_device(dev); 1771 1772 return sprintf(buf, "%d\n", 1773 !!(data->caseopen & to_sensor_dev_attr_2(attr)->index)); 1774 } 1775 1776 static ssize_t 1777 clear_caseopen(struct device *dev, struct device_attribute *attr, 1778 const char *buf, size_t count) 1779 { 1780 struct w83627ehf_data *data = dev_get_drvdata(dev); 1781 unsigned long val; 1782 u16 reg, mask; 1783 1784 if (kstrtoul(buf, 10, &val) || val != 0) 1785 return -EINVAL; 1786 1787 mask = to_sensor_dev_attr_2(attr)->nr; 1788 1789 mutex_lock(&data->update_lock); 1790 reg = w83627ehf_read_value(data, W83627EHF_REG_CASEOPEN_CLR); 1791 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg | mask); 1792 w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg & ~mask); 1793 data->valid = 0; /* Force cache refresh */ 1794 mutex_unlock(&data->update_lock); 1795 1796 return count; 1797 } 1798 1799 static struct sensor_device_attribute_2 sda_caseopen[] = { 1800 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_caseopen, 1801 clear_caseopen, 0x80, 0x10), 1802 SENSOR_ATTR_2(intrusion1_alarm, S_IWUSR | S_IRUGO, show_caseopen, 1803 clear_caseopen, 0x40, 0x40), 1804 }; 1805 1806 /* 1807 * Driver and device management 1808 */ 1809 1810 static void w83627ehf_device_remove_files(struct device *dev) 1811 { 1812 /* 1813 * some entries in the following arrays may not have been used in 1814 * device_create_file(), but device_remove_file() will ignore them 1815 */ 1816 int i; 1817 struct w83627ehf_data *data = dev_get_drvdata(dev); 1818 1819 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++) 1820 device_remove_file(dev, &sda_sf3_arrays[i].dev_attr); 1821 for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) { 1822 struct sensor_device_attribute *attr = 1823 &sda_sf3_max_step_arrays[i]; 1824 if (data->REG_FAN_STEP_OUTPUT && 1825 data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff) 1826 device_remove_file(dev, &attr->dev_attr); 1827 } 1828 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan3); i++) 1829 device_remove_file(dev, &sda_sf3_arrays_fan3[i].dev_attr); 1830 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++) 1831 device_remove_file(dev, &sda_sf3_arrays_fan4[i].dev_attr); 1832 for (i = 0; i < data->in_num; i++) { 1833 if ((i == 6) && data->in6_skip) 1834 continue; 1835 device_remove_file(dev, &sda_in_input[i].dev_attr); 1836 device_remove_file(dev, &sda_in_alarm[i].dev_attr); 1837 device_remove_file(dev, &sda_in_min[i].dev_attr); 1838 device_remove_file(dev, &sda_in_max[i].dev_attr); 1839 } 1840 for (i = 0; i < 5; i++) { 1841 device_remove_file(dev, &sda_fan_input[i].dev_attr); 1842 device_remove_file(dev, &sda_fan_alarm[i].dev_attr); 1843 device_remove_file(dev, &sda_fan_div[i].dev_attr); 1844 device_remove_file(dev, &sda_fan_min[i].dev_attr); 1845 } 1846 for (i = 0; i < data->pwm_num; i++) { 1847 device_remove_file(dev, &sda_pwm[i].dev_attr); 1848 device_remove_file(dev, &sda_pwm_mode[i].dev_attr); 1849 device_remove_file(dev, &sda_pwm_enable[i].dev_attr); 1850 device_remove_file(dev, &sda_target_temp[i].dev_attr); 1851 device_remove_file(dev, &sda_tolerance[i].dev_attr); 1852 } 1853 for (i = 0; i < NUM_REG_TEMP; i++) { 1854 if (!(data->have_temp & (1 << i))) 1855 continue; 1856 device_remove_file(dev, &sda_temp_input[i].dev_attr); 1857 device_remove_file(dev, &sda_temp_label[i].dev_attr); 1858 if (i == 2 && data->temp3_val_only) 1859 continue; 1860 device_remove_file(dev, &sda_temp_max[i].dev_attr); 1861 device_remove_file(dev, &sda_temp_max_hyst[i].dev_attr); 1862 if (i > 2) 1863 continue; 1864 device_remove_file(dev, &sda_temp_alarm[i].dev_attr); 1865 device_remove_file(dev, &sda_temp_type[i].dev_attr); 1866 device_remove_file(dev, &sda_temp_offset[i].dev_attr); 1867 } 1868 1869 device_remove_file(dev, &sda_caseopen[0].dev_attr); 1870 device_remove_file(dev, &sda_caseopen[1].dev_attr); 1871 1872 device_remove_file(dev, &dev_attr_name); 1873 device_remove_file(dev, &dev_attr_cpu0_vid); 1874 } 1875 1876 /* Get the monitoring functions started */ 1877 static inline void w83627ehf_init_device(struct w83627ehf_data *data, 1878 enum kinds kind) 1879 { 1880 int i; 1881 u8 tmp, diode; 1882 1883 /* Start monitoring is needed */ 1884 tmp = w83627ehf_read_value(data, W83627EHF_REG_CONFIG); 1885 if (!(tmp & 0x01)) 1886 w83627ehf_write_value(data, W83627EHF_REG_CONFIG, 1887 tmp | 0x01); 1888 1889 /* Enable temperature sensors if needed */ 1890 for (i = 0; i < NUM_REG_TEMP; i++) { 1891 if (!(data->have_temp & (1 << i))) 1892 continue; 1893 if (!data->reg_temp_config[i]) 1894 continue; 1895 tmp = w83627ehf_read_value(data, 1896 data->reg_temp_config[i]); 1897 if (tmp & 0x01) 1898 w83627ehf_write_value(data, 1899 data->reg_temp_config[i], 1900 tmp & 0xfe); 1901 } 1902 1903 /* Enable VBAT monitoring if needed */ 1904 tmp = w83627ehf_read_value(data, W83627EHF_REG_VBAT); 1905 if (!(tmp & 0x01)) 1906 w83627ehf_write_value(data, W83627EHF_REG_VBAT, tmp | 0x01); 1907 1908 /* Get thermal sensor types */ 1909 switch (kind) { 1910 case w83627ehf: 1911 diode = w83627ehf_read_value(data, W83627EHF_REG_DIODE); 1912 break; 1913 case w83627uhg: 1914 diode = 0x00; 1915 break; 1916 default: 1917 diode = 0x70; 1918 } 1919 for (i = 0; i < 3; i++) { 1920 const char *label = NULL; 1921 1922 if (data->temp_label) 1923 label = data->temp_label[data->temp_src[i]]; 1924 1925 /* Digital source overrides analog type */ 1926 if (label && strncmp(label, "PECI", 4) == 0) 1927 data->temp_type[i] = 6; 1928 else if (label && strncmp(label, "AMD", 3) == 0) 1929 data->temp_type[i] = 5; 1930 else if ((tmp & (0x02 << i))) 1931 data->temp_type[i] = (diode & (0x10 << i)) ? 1 : 3; 1932 else 1933 data->temp_type[i] = 4; /* thermistor */ 1934 } 1935 } 1936 1937 static void w82627ehf_swap_tempreg(struct w83627ehf_data *data, 1938 int r1, int r2) 1939 { 1940 u16 tmp; 1941 1942 tmp = data->temp_src[r1]; 1943 data->temp_src[r1] = data->temp_src[r2]; 1944 data->temp_src[r2] = tmp; 1945 1946 tmp = data->reg_temp[r1]; 1947 data->reg_temp[r1] = data->reg_temp[r2]; 1948 data->reg_temp[r2] = tmp; 1949 1950 tmp = data->reg_temp_over[r1]; 1951 data->reg_temp_over[r1] = data->reg_temp_over[r2]; 1952 data->reg_temp_over[r2] = tmp; 1953 1954 tmp = data->reg_temp_hyst[r1]; 1955 data->reg_temp_hyst[r1] = data->reg_temp_hyst[r2]; 1956 data->reg_temp_hyst[r2] = tmp; 1957 1958 tmp = data->reg_temp_config[r1]; 1959 data->reg_temp_config[r1] = data->reg_temp_config[r2]; 1960 data->reg_temp_config[r2] = tmp; 1961 } 1962 1963 static void 1964 w83627ehf_set_temp_reg_ehf(struct w83627ehf_data *data, int n_temp) 1965 { 1966 int i; 1967 1968 for (i = 0; i < n_temp; i++) { 1969 data->reg_temp[i] = W83627EHF_REG_TEMP[i]; 1970 data->reg_temp_over[i] = W83627EHF_REG_TEMP_OVER[i]; 1971 data->reg_temp_hyst[i] = W83627EHF_REG_TEMP_HYST[i]; 1972 data->reg_temp_config[i] = W83627EHF_REG_TEMP_CONFIG[i]; 1973 } 1974 } 1975 1976 static void 1977 w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data, 1978 struct w83627ehf_data *data) 1979 { 1980 int fan3pin, fan4pin, fan4min, fan5pin, regval; 1981 1982 /* The W83627UHG is simple, only two fan inputs, no config */ 1983 if (sio_data->kind == w83627uhg) { 1984 data->has_fan = 0x03; /* fan1 and fan2 */ 1985 data->has_fan_min = 0x03; 1986 return; 1987 } 1988 1989 superio_enter(sio_data->sioreg); 1990 1991 /* fan4 and fan5 share some pins with the GPIO and serial flash */ 1992 if (sio_data->kind == nct6775) { 1993 /* On NCT6775, fan4 shares pins with the fdc interface */ 1994 fan3pin = 1; 1995 fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80); 1996 fan4min = 0; 1997 fan5pin = 0; 1998 } else if (sio_data->kind == nct6776) { 1999 bool gpok = superio_inb(sio_data->sioreg, 0x27) & 0x80; 2000 2001 superio_select(sio_data->sioreg, W83627EHF_LD_HWM); 2002 regval = superio_inb(sio_data->sioreg, SIO_REG_ENABLE); 2003 2004 if (regval & 0x80) 2005 fan3pin = gpok; 2006 else 2007 fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40); 2008 2009 if (regval & 0x40) 2010 fan4pin = gpok; 2011 else 2012 fan4pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x01); 2013 2014 if (regval & 0x20) 2015 fan5pin = gpok; 2016 else 2017 fan5pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x02); 2018 2019 fan4min = fan4pin; 2020 } else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) { 2021 fan3pin = 1; 2022 fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40; 2023 fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20; 2024 fan4min = fan4pin; 2025 } else { 2026 fan3pin = 1; 2027 fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06); 2028 fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02); 2029 fan4min = fan4pin; 2030 } 2031 2032 superio_exit(sio_data->sioreg); 2033 2034 data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */ 2035 data->has_fan |= (fan3pin << 2); 2036 data->has_fan_min |= (fan3pin << 2); 2037 2038 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) { 2039 /* 2040 * NCT6775F and NCT6776F don't have the W83627EHF_REG_FANDIV1 2041 * register 2042 */ 2043 data->has_fan |= (fan4pin << 3) | (fan5pin << 4); 2044 data->has_fan_min |= (fan4min << 3) | (fan5pin << 4); 2045 } else { 2046 /* 2047 * It looks like fan4 and fan5 pins can be alternatively used 2048 * as fan on/off switches, but fan5 control is write only :/ 2049 * We assume that if the serial interface is disabled, designers 2050 * connected fan5 as input unless they are emitting log 1, which 2051 * is not the default. 2052 */ 2053 regval = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1); 2054 if ((regval & (1 << 2)) && fan4pin) { 2055 data->has_fan |= (1 << 3); 2056 data->has_fan_min |= (1 << 3); 2057 } 2058 if (!(regval & (1 << 1)) && fan5pin) { 2059 data->has_fan |= (1 << 4); 2060 data->has_fan_min |= (1 << 4); 2061 } 2062 } 2063 } 2064 2065 static int w83627ehf_probe(struct platform_device *pdev) 2066 { 2067 struct device *dev = &pdev->dev; 2068 struct w83627ehf_sio_data *sio_data = dev->platform_data; 2069 struct w83627ehf_data *data; 2070 struct resource *res; 2071 u8 en_vrm10; 2072 int i, err = 0; 2073 2074 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 2075 if (!request_region(res->start, IOREGION_LENGTH, DRVNAME)) { 2076 err = -EBUSY; 2077 dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", 2078 (unsigned long)res->start, 2079 (unsigned long)res->start + IOREGION_LENGTH - 1); 2080 goto exit; 2081 } 2082 2083 data = devm_kzalloc(&pdev->dev, sizeof(struct w83627ehf_data), 2084 GFP_KERNEL); 2085 if (!data) { 2086 err = -ENOMEM; 2087 goto exit_release; 2088 } 2089 2090 data->addr = res->start; 2091 mutex_init(&data->lock); 2092 mutex_init(&data->update_lock); 2093 data->name = w83627ehf_device_names[sio_data->kind]; 2094 data->bank = 0xff; /* Force initial bank selection */ 2095 platform_set_drvdata(pdev, data); 2096 2097 /* 627EHG and 627EHF have 10 voltage inputs; 627DHG and 667HG have 9 */ 2098 data->in_num = (sio_data->kind == w83627ehf) ? 10 : 9; 2099 /* 667HG, NCT6775F, and NCT6776F have 3 pwms, and 627UHG has only 2 */ 2100 switch (sio_data->kind) { 2101 default: 2102 data->pwm_num = 4; 2103 break; 2104 case w83667hg: 2105 case w83667hg_b: 2106 case nct6775: 2107 case nct6776: 2108 data->pwm_num = 3; 2109 break; 2110 case w83627uhg: 2111 data->pwm_num = 2; 2112 break; 2113 } 2114 2115 /* Default to 3 temperature inputs, code below will adjust as needed */ 2116 data->have_temp = 0x07; 2117 2118 /* Deal with temperature register setup first. */ 2119 if (sio_data->kind == nct6775 || sio_data->kind == nct6776) { 2120 int mask = 0; 2121 2122 /* 2123 * Display temperature sensor output only if it monitors 2124 * a source other than one already reported. Always display 2125 * first three temperature registers, though. 2126 */ 2127 for (i = 0; i < NUM_REG_TEMP; i++) { 2128 u8 src; 2129 2130 data->reg_temp[i] = NCT6775_REG_TEMP[i]; 2131 data->reg_temp_over[i] = NCT6775_REG_TEMP_OVER[i]; 2132 data->reg_temp_hyst[i] = NCT6775_REG_TEMP_HYST[i]; 2133 data->reg_temp_config[i] = NCT6775_REG_TEMP_CONFIG[i]; 2134 2135 src = w83627ehf_read_value(data, 2136 NCT6775_REG_TEMP_SOURCE[i]); 2137 src &= 0x1f; 2138 if (src && !(mask & (1 << src))) { 2139 data->have_temp |= 1 << i; 2140 mask |= 1 << src; 2141 } 2142 2143 data->temp_src[i] = src; 2144 2145 /* 2146 * Now do some register swapping if index 0..2 don't 2147 * point to SYSTIN(1), CPUIN(2), and AUXIN(3). 2148 * Idea is to have the first three attributes 2149 * report SYSTIN, CPUIN, and AUXIN if possible 2150 * without overriding the basic system configuration. 2151 */ 2152 if (i > 0 && data->temp_src[0] != 1 2153 && data->temp_src[i] == 1) 2154 w82627ehf_swap_tempreg(data, 0, i); 2155 if (i > 1 && data->temp_src[1] != 2 2156 && data->temp_src[i] == 2) 2157 w82627ehf_swap_tempreg(data, 1, i); 2158 if (i > 2 && data->temp_src[2] != 3 2159 && data->temp_src[i] == 3) 2160 w82627ehf_swap_tempreg(data, 2, i); 2161 } 2162 if (sio_data->kind == nct6776) { 2163 /* 2164 * On NCT6776, AUXTIN and VIN3 pins are shared. 2165 * Only way to detect it is to check if AUXTIN is used 2166 * as a temperature source, and if that source is 2167 * enabled. 2168 * 2169 * If that is the case, disable in6, which reports VIN3. 2170 * Otherwise disable temp3. 2171 */ 2172 if (data->temp_src[2] == 3) { 2173 u8 reg; 2174 2175 if (data->reg_temp_config[2]) 2176 reg = w83627ehf_read_value(data, 2177 data->reg_temp_config[2]); 2178 else 2179 reg = 0; /* Assume AUXTIN is used */ 2180 2181 if (reg & 0x01) 2182 data->have_temp &= ~(1 << 2); 2183 else 2184 data->in6_skip = 1; 2185 } 2186 data->temp_label = nct6776_temp_label; 2187 } else { 2188 data->temp_label = nct6775_temp_label; 2189 } 2190 data->have_temp_offset = data->have_temp & 0x07; 2191 for (i = 0; i < 3; i++) { 2192 if (data->temp_src[i] > 3) 2193 data->have_temp_offset &= ~(1 << i); 2194 } 2195 } else if (sio_data->kind == w83667hg_b) { 2196 u8 reg; 2197 2198 w83627ehf_set_temp_reg_ehf(data, 4); 2199 2200 /* 2201 * Temperature sources are selected with bank 0, registers 0x49 2202 * and 0x4a. 2203 */ 2204 reg = w83627ehf_read_value(data, 0x4a); 2205 data->temp_src[0] = reg >> 5; 2206 reg = w83627ehf_read_value(data, 0x49); 2207 data->temp_src[1] = reg & 0x07; 2208 data->temp_src[2] = (reg >> 4) & 0x07; 2209 2210 /* 2211 * W83667HG-B has another temperature register at 0x7e. 2212 * The temperature source is selected with register 0x7d. 2213 * Support it if the source differs from already reported 2214 * sources. 2215 */ 2216 reg = w83627ehf_read_value(data, 0x7d); 2217 reg &= 0x07; 2218 if (reg != data->temp_src[0] && reg != data->temp_src[1] 2219 && reg != data->temp_src[2]) { 2220 data->temp_src[3] = reg; 2221 data->have_temp |= 1 << 3; 2222 } 2223 2224 /* 2225 * Chip supports either AUXTIN or VIN3. Try to find out which 2226 * one. 2227 */ 2228 reg = w83627ehf_read_value(data, W83627EHF_REG_TEMP_CONFIG[2]); 2229 if (data->temp_src[2] == 2 && (reg & 0x01)) 2230 data->have_temp &= ~(1 << 2); 2231 2232 if ((data->temp_src[2] == 2 && (data->have_temp & (1 << 2))) 2233 || (data->temp_src[3] == 2 && (data->have_temp & (1 << 3)))) 2234 data->in6_skip = 1; 2235 2236 data->temp_label = w83667hg_b_temp_label; 2237 data->have_temp_offset = data->have_temp & 0x07; 2238 for (i = 0; i < 3; i++) { 2239 if (data->temp_src[i] > 2) 2240 data->have_temp_offset &= ~(1 << i); 2241 } 2242 } else if (sio_data->kind == w83627uhg) { 2243 u8 reg; 2244 2245 w83627ehf_set_temp_reg_ehf(data, 3); 2246 2247 /* 2248 * Temperature sources for temp2 and temp3 are selected with 2249 * bank 0, registers 0x49 and 0x4a. 2250 */ 2251 data->temp_src[0] = 0; /* SYSTIN */ 2252 reg = w83627ehf_read_value(data, 0x49) & 0x07; 2253 /* Adjust to have the same mapping as other source registers */ 2254 if (reg == 0) 2255 data->temp_src[1] = 1; 2256 else if (reg >= 2 && reg <= 5) 2257 data->temp_src[1] = reg + 2; 2258 else /* should never happen */ 2259 data->have_temp &= ~(1 << 1); 2260 reg = w83627ehf_read_value(data, 0x4a); 2261 data->temp_src[2] = reg >> 5; 2262 2263 /* 2264 * Skip temp3 if source is invalid or the same as temp1 2265 * or temp2. 2266 */ 2267 if (data->temp_src[2] == 2 || data->temp_src[2] == 3 || 2268 data->temp_src[2] == data->temp_src[0] || 2269 ((data->have_temp & (1 << 1)) && 2270 data->temp_src[2] == data->temp_src[1])) 2271 data->have_temp &= ~(1 << 2); 2272 else 2273 data->temp3_val_only = 1; /* No limit regs */ 2274 2275 data->in6_skip = 1; /* No VIN3 */ 2276 2277 data->temp_label = w83667hg_b_temp_label; 2278 data->have_temp_offset = data->have_temp & 0x03; 2279 for (i = 0; i < 3; i++) { 2280 if (data->temp_src[i] > 1) 2281 data->have_temp_offset &= ~(1 << i); 2282 } 2283 } else { 2284 w83627ehf_set_temp_reg_ehf(data, 3); 2285 2286 /* Temperature sources are fixed */ 2287 2288 if (sio_data->kind == w83667hg) { 2289 u8 reg; 2290 2291 /* 2292 * Chip supports either AUXTIN or VIN3. Try to find 2293 * out which one. 2294 */ 2295 reg = w83627ehf_read_value(data, 2296 W83627EHF_REG_TEMP_CONFIG[2]); 2297 if (reg & 0x01) 2298 data->have_temp &= ~(1 << 2); 2299 else 2300 data->in6_skip = 1; 2301 } 2302 data->have_temp_offset = data->have_temp & 0x07; 2303 } 2304 2305 if (sio_data->kind == nct6775) { 2306 data->has_fan_div = true; 2307 data->fan_from_reg = fan_from_reg16; 2308 data->fan_from_reg_min = fan_from_reg8; 2309 data->REG_PWM = NCT6775_REG_PWM; 2310 data->REG_TARGET = NCT6775_REG_TARGET; 2311 data->REG_FAN = NCT6775_REG_FAN; 2312 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN; 2313 data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT; 2314 data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT; 2315 data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME; 2316 data->REG_FAN_MAX_OUTPUT = NCT6775_REG_FAN_MAX_OUTPUT; 2317 data->REG_FAN_STEP_OUTPUT = NCT6775_REG_FAN_STEP_OUTPUT; 2318 } else if (sio_data->kind == nct6776) { 2319 data->has_fan_div = false; 2320 data->fan_from_reg = fan_from_reg13; 2321 data->fan_from_reg_min = fan_from_reg13; 2322 data->REG_PWM = NCT6775_REG_PWM; 2323 data->REG_TARGET = NCT6775_REG_TARGET; 2324 data->REG_FAN = NCT6775_REG_FAN; 2325 data->REG_FAN_MIN = NCT6776_REG_FAN_MIN; 2326 data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT; 2327 data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT; 2328 data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME; 2329 } else if (sio_data->kind == w83667hg_b) { 2330 data->has_fan_div = true; 2331 data->fan_from_reg = fan_from_reg8; 2332 data->fan_from_reg_min = fan_from_reg8; 2333 data->REG_PWM = W83627EHF_REG_PWM; 2334 data->REG_TARGET = W83627EHF_REG_TARGET; 2335 data->REG_FAN = W83627EHF_REG_FAN; 2336 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN; 2337 data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT; 2338 data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT; 2339 data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME; 2340 data->REG_FAN_MAX_OUTPUT = 2341 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B; 2342 data->REG_FAN_STEP_OUTPUT = 2343 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B; 2344 } else { 2345 data->has_fan_div = true; 2346 data->fan_from_reg = fan_from_reg8; 2347 data->fan_from_reg_min = fan_from_reg8; 2348 data->REG_PWM = W83627EHF_REG_PWM; 2349 data->REG_TARGET = W83627EHF_REG_TARGET; 2350 data->REG_FAN = W83627EHF_REG_FAN; 2351 data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN; 2352 data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT; 2353 data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT; 2354 data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME; 2355 data->REG_FAN_MAX_OUTPUT = 2356 W83627EHF_REG_FAN_MAX_OUTPUT_COMMON; 2357 data->REG_FAN_STEP_OUTPUT = 2358 W83627EHF_REG_FAN_STEP_OUTPUT_COMMON; 2359 } 2360 2361 /* Setup input voltage scaling factors */ 2362 if (sio_data->kind == w83627uhg) 2363 data->scale_in = scale_in_w83627uhg; 2364 else 2365 data->scale_in = scale_in_common; 2366 2367 /* Initialize the chip */ 2368 w83627ehf_init_device(data, sio_data->kind); 2369 2370 data->vrm = vid_which_vrm(); 2371 superio_enter(sio_data->sioreg); 2372 /* Read VID value */ 2373 if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b || 2374 sio_data->kind == nct6775 || sio_data->kind == nct6776) { 2375 /* 2376 * W83667HG has different pins for VID input and output, so 2377 * we can get the VID input values directly at logical device D 2378 * 0xe3. 2379 */ 2380 superio_select(sio_data->sioreg, W83667HG_LD_VID); 2381 data->vid = superio_inb(sio_data->sioreg, 0xe3); 2382 err = device_create_file(dev, &dev_attr_cpu0_vid); 2383 if (err) 2384 goto exit_release; 2385 } else if (sio_data->kind != w83627uhg) { 2386 superio_select(sio_data->sioreg, W83627EHF_LD_HWM); 2387 if (superio_inb(sio_data->sioreg, SIO_REG_VID_CTRL) & 0x80) { 2388 /* 2389 * Set VID input sensibility if needed. In theory the 2390 * BIOS should have set it, but in practice it's not 2391 * always the case. We only do it for the W83627EHF/EHG 2392 * because the W83627DHG is more complex in this 2393 * respect. 2394 */ 2395 if (sio_data->kind == w83627ehf) { 2396 en_vrm10 = superio_inb(sio_data->sioreg, 2397 SIO_REG_EN_VRM10); 2398 if ((en_vrm10 & 0x08) && data->vrm == 90) { 2399 dev_warn(dev, 2400 "Setting VID input voltage to TTL\n"); 2401 superio_outb(sio_data->sioreg, 2402 SIO_REG_EN_VRM10, 2403 en_vrm10 & ~0x08); 2404 } else if (!(en_vrm10 & 0x08) 2405 && data->vrm == 100) { 2406 dev_warn(dev, 2407 "Setting VID input voltage to VRM10\n"); 2408 superio_outb(sio_data->sioreg, 2409 SIO_REG_EN_VRM10, 2410 en_vrm10 | 0x08); 2411 } 2412 } 2413 2414 data->vid = superio_inb(sio_data->sioreg, 2415 SIO_REG_VID_DATA); 2416 if (sio_data->kind == w83627ehf) /* 6 VID pins only */ 2417 data->vid &= 0x3f; 2418 2419 err = device_create_file(dev, &dev_attr_cpu0_vid); 2420 if (err) 2421 goto exit_release; 2422 } else { 2423 dev_info(dev, 2424 "VID pins in output mode, CPU VID not available\n"); 2425 } 2426 } 2427 2428 if (fan_debounce && 2429 (sio_data->kind == nct6775 || sio_data->kind == nct6776)) { 2430 u8 tmp; 2431 2432 superio_select(sio_data->sioreg, W83627EHF_LD_HWM); 2433 tmp = superio_inb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE); 2434 if (sio_data->kind == nct6776) 2435 superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE, 2436 0x3e | tmp); 2437 else 2438 superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE, 2439 0x1e | tmp); 2440 pr_info("Enabled fan debounce for chip %s\n", data->name); 2441 } 2442 2443 superio_exit(sio_data->sioreg); 2444 2445 w83627ehf_check_fan_inputs(sio_data, data); 2446 2447 /* Read fan clock dividers immediately */ 2448 w83627ehf_update_fan_div_common(dev, data); 2449 2450 /* Read pwm data to save original values */ 2451 w83627ehf_update_pwm_common(dev, data); 2452 for (i = 0; i < data->pwm_num; i++) 2453 data->pwm_enable_orig[i] = data->pwm_enable[i]; 2454 2455 /* Register sysfs hooks */ 2456 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++) { 2457 err = device_create_file(dev, &sda_sf3_arrays[i].dev_attr); 2458 if (err) 2459 goto exit_remove; 2460 } 2461 2462 for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) { 2463 struct sensor_device_attribute *attr = 2464 &sda_sf3_max_step_arrays[i]; 2465 if (data->REG_FAN_STEP_OUTPUT && 2466 data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff) { 2467 err = device_create_file(dev, &attr->dev_attr); 2468 if (err) 2469 goto exit_remove; 2470 } 2471 } 2472 /* if fan3 and fan4 are enabled create the sf3 files for them */ 2473 if ((data->has_fan & (1 << 2)) && data->pwm_num >= 3) 2474 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan3); i++) { 2475 err = device_create_file(dev, 2476 &sda_sf3_arrays_fan3[i].dev_attr); 2477 if (err) 2478 goto exit_remove; 2479 } 2480 if ((data->has_fan & (1 << 3)) && data->pwm_num >= 4) 2481 for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++) { 2482 err = device_create_file(dev, 2483 &sda_sf3_arrays_fan4[i].dev_attr); 2484 if (err) 2485 goto exit_remove; 2486 } 2487 2488 for (i = 0; i < data->in_num; i++) { 2489 if ((i == 6) && data->in6_skip) 2490 continue; 2491 if ((err = device_create_file(dev, &sda_in_input[i].dev_attr)) 2492 || (err = device_create_file(dev, 2493 &sda_in_alarm[i].dev_attr)) 2494 || (err = device_create_file(dev, 2495 &sda_in_min[i].dev_attr)) 2496 || (err = device_create_file(dev, 2497 &sda_in_max[i].dev_attr))) 2498 goto exit_remove; 2499 } 2500 2501 for (i = 0; i < 5; i++) { 2502 if (data->has_fan & (1 << i)) { 2503 if ((err = device_create_file(dev, 2504 &sda_fan_input[i].dev_attr)) 2505 || (err = device_create_file(dev, 2506 &sda_fan_alarm[i].dev_attr))) 2507 goto exit_remove; 2508 if (sio_data->kind != nct6776) { 2509 err = device_create_file(dev, 2510 &sda_fan_div[i].dev_attr); 2511 if (err) 2512 goto exit_remove; 2513 } 2514 if (data->has_fan_min & (1 << i)) { 2515 err = device_create_file(dev, 2516 &sda_fan_min[i].dev_attr); 2517 if (err) 2518 goto exit_remove; 2519 } 2520 if (i < data->pwm_num && 2521 ((err = device_create_file(dev, 2522 &sda_pwm[i].dev_attr)) 2523 || (err = device_create_file(dev, 2524 &sda_pwm_mode[i].dev_attr)) 2525 || (err = device_create_file(dev, 2526 &sda_pwm_enable[i].dev_attr)) 2527 || (err = device_create_file(dev, 2528 &sda_target_temp[i].dev_attr)) 2529 || (err = device_create_file(dev, 2530 &sda_tolerance[i].dev_attr)))) 2531 goto exit_remove; 2532 } 2533 } 2534 2535 for (i = 0; i < NUM_REG_TEMP; i++) { 2536 if (!(data->have_temp & (1 << i))) 2537 continue; 2538 err = device_create_file(dev, &sda_temp_input[i].dev_attr); 2539 if (err) 2540 goto exit_remove; 2541 if (data->temp_label) { 2542 err = device_create_file(dev, 2543 &sda_temp_label[i].dev_attr); 2544 if (err) 2545 goto exit_remove; 2546 } 2547 if (i == 2 && data->temp3_val_only) 2548 continue; 2549 if (data->reg_temp_over[i]) { 2550 err = device_create_file(dev, 2551 &sda_temp_max[i].dev_attr); 2552 if (err) 2553 goto exit_remove; 2554 } 2555 if (data->reg_temp_hyst[i]) { 2556 err = device_create_file(dev, 2557 &sda_temp_max_hyst[i].dev_attr); 2558 if (err) 2559 goto exit_remove; 2560 } 2561 if (i > 2) 2562 continue; 2563 if ((err = device_create_file(dev, 2564 &sda_temp_alarm[i].dev_attr)) 2565 || (err = device_create_file(dev, 2566 &sda_temp_type[i].dev_attr))) 2567 goto exit_remove; 2568 if (data->have_temp_offset & (1 << i)) { 2569 err = device_create_file(dev, 2570 &sda_temp_offset[i].dev_attr); 2571 if (err) 2572 goto exit_remove; 2573 } 2574 } 2575 2576 err = device_create_file(dev, &sda_caseopen[0].dev_attr); 2577 if (err) 2578 goto exit_remove; 2579 2580 if (sio_data->kind == nct6776) { 2581 err = device_create_file(dev, &sda_caseopen[1].dev_attr); 2582 if (err) 2583 goto exit_remove; 2584 } 2585 2586 err = device_create_file(dev, &dev_attr_name); 2587 if (err) 2588 goto exit_remove; 2589 2590 data->hwmon_dev = hwmon_device_register(dev); 2591 if (IS_ERR(data->hwmon_dev)) { 2592 err = PTR_ERR(data->hwmon_dev); 2593 goto exit_remove; 2594 } 2595 2596 return 0; 2597 2598 exit_remove: 2599 w83627ehf_device_remove_files(dev); 2600 exit_release: 2601 platform_set_drvdata(pdev, NULL); 2602 release_region(res->start, IOREGION_LENGTH); 2603 exit: 2604 return err; 2605 } 2606 2607 static int w83627ehf_remove(struct platform_device *pdev) 2608 { 2609 struct w83627ehf_data *data = platform_get_drvdata(pdev); 2610 2611 hwmon_device_unregister(data->hwmon_dev); 2612 w83627ehf_device_remove_files(&pdev->dev); 2613 release_region(data->addr, IOREGION_LENGTH); 2614 platform_set_drvdata(pdev, NULL); 2615 2616 return 0; 2617 } 2618 2619 #ifdef CONFIG_PM 2620 static int w83627ehf_suspend(struct device *dev) 2621 { 2622 struct w83627ehf_data *data = w83627ehf_update_device(dev); 2623 struct w83627ehf_sio_data *sio_data = dev->platform_data; 2624 2625 mutex_lock(&data->update_lock); 2626 data->vbat = w83627ehf_read_value(data, W83627EHF_REG_VBAT); 2627 if (sio_data->kind == nct6775) { 2628 data->fandiv1 = w83627ehf_read_value(data, NCT6775_REG_FANDIV1); 2629 data->fandiv2 = w83627ehf_read_value(data, NCT6775_REG_FANDIV2); 2630 } 2631 mutex_unlock(&data->update_lock); 2632 2633 return 0; 2634 } 2635 2636 static int w83627ehf_resume(struct device *dev) 2637 { 2638 struct w83627ehf_data *data = dev_get_drvdata(dev); 2639 struct w83627ehf_sio_data *sio_data = dev->platform_data; 2640 int i; 2641 2642 mutex_lock(&data->update_lock); 2643 data->bank = 0xff; /* Force initial bank selection */ 2644 2645 /* Restore limits */ 2646 for (i = 0; i < data->in_num; i++) { 2647 if ((i == 6) && data->in6_skip) 2648 continue; 2649 2650 w83627ehf_write_value(data, W83627EHF_REG_IN_MIN(i), 2651 data->in_min[i]); 2652 w83627ehf_write_value(data, W83627EHF_REG_IN_MAX(i), 2653 data->in_max[i]); 2654 } 2655 2656 for (i = 0; i < 5; i++) { 2657 if (!(data->has_fan_min & (1 << i))) 2658 continue; 2659 2660 w83627ehf_write_value(data, data->REG_FAN_MIN[i], 2661 data->fan_min[i]); 2662 } 2663 2664 for (i = 0; i < NUM_REG_TEMP; i++) { 2665 if (!(data->have_temp & (1 << i))) 2666 continue; 2667 2668 if (data->reg_temp_over[i]) 2669 w83627ehf_write_temp(data, data->reg_temp_over[i], 2670 data->temp_max[i]); 2671 if (data->reg_temp_hyst[i]) 2672 w83627ehf_write_temp(data, data->reg_temp_hyst[i], 2673 data->temp_max_hyst[i]); 2674 if (i > 2) 2675 continue; 2676 if (data->have_temp_offset & (1 << i)) 2677 w83627ehf_write_value(data, 2678 W83627EHF_REG_TEMP_OFFSET[i], 2679 data->temp_offset[i]); 2680 } 2681 2682 /* Restore other settings */ 2683 w83627ehf_write_value(data, W83627EHF_REG_VBAT, data->vbat); 2684 if (sio_data->kind == nct6775) { 2685 w83627ehf_write_value(data, NCT6775_REG_FANDIV1, data->fandiv1); 2686 w83627ehf_write_value(data, NCT6775_REG_FANDIV2, data->fandiv2); 2687 } 2688 2689 /* Force re-reading all values */ 2690 data->valid = 0; 2691 mutex_unlock(&data->update_lock); 2692 2693 return 0; 2694 } 2695 2696 static const struct dev_pm_ops w83627ehf_dev_pm_ops = { 2697 .suspend = w83627ehf_suspend, 2698 .resume = w83627ehf_resume, 2699 }; 2700 2701 #define W83627EHF_DEV_PM_OPS (&w83627ehf_dev_pm_ops) 2702 #else 2703 #define W83627EHF_DEV_PM_OPS NULL 2704 #endif /* CONFIG_PM */ 2705 2706 static struct platform_driver w83627ehf_driver = { 2707 .driver = { 2708 .owner = THIS_MODULE, 2709 .name = DRVNAME, 2710 .pm = W83627EHF_DEV_PM_OPS, 2711 }, 2712 .probe = w83627ehf_probe, 2713 .remove = w83627ehf_remove, 2714 }; 2715 2716 /* w83627ehf_find() looks for a '627 in the Super-I/O config space */ 2717 static int __init w83627ehf_find(int sioaddr, unsigned short *addr, 2718 struct w83627ehf_sio_data *sio_data) 2719 { 2720 static const char sio_name_W83627EHF[] __initconst = "W83627EHF"; 2721 static const char sio_name_W83627EHG[] __initconst = "W83627EHG"; 2722 static const char sio_name_W83627DHG[] __initconst = "W83627DHG"; 2723 static const char sio_name_W83627DHG_P[] __initconst = "W83627DHG-P"; 2724 static const char sio_name_W83627UHG[] __initconst = "W83627UHG"; 2725 static const char sio_name_W83667HG[] __initconst = "W83667HG"; 2726 static const char sio_name_W83667HG_B[] __initconst = "W83667HG-B"; 2727 static const char sio_name_NCT6775[] __initconst = "NCT6775F"; 2728 static const char sio_name_NCT6776[] __initconst = "NCT6776F"; 2729 2730 u16 val; 2731 const char *sio_name; 2732 2733 superio_enter(sioaddr); 2734 2735 if (force_id) 2736 val = force_id; 2737 else 2738 val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8) 2739 | superio_inb(sioaddr, SIO_REG_DEVID + 1); 2740 switch (val & SIO_ID_MASK) { 2741 case SIO_W83627EHF_ID: 2742 sio_data->kind = w83627ehf; 2743 sio_name = sio_name_W83627EHF; 2744 break; 2745 case SIO_W83627EHG_ID: 2746 sio_data->kind = w83627ehf; 2747 sio_name = sio_name_W83627EHG; 2748 break; 2749 case SIO_W83627DHG_ID: 2750 sio_data->kind = w83627dhg; 2751 sio_name = sio_name_W83627DHG; 2752 break; 2753 case SIO_W83627DHG_P_ID: 2754 sio_data->kind = w83627dhg_p; 2755 sio_name = sio_name_W83627DHG_P; 2756 break; 2757 case SIO_W83627UHG_ID: 2758 sio_data->kind = w83627uhg; 2759 sio_name = sio_name_W83627UHG; 2760 break; 2761 case SIO_W83667HG_ID: 2762 sio_data->kind = w83667hg; 2763 sio_name = sio_name_W83667HG; 2764 break; 2765 case SIO_W83667HG_B_ID: 2766 sio_data->kind = w83667hg_b; 2767 sio_name = sio_name_W83667HG_B; 2768 break; 2769 case SIO_NCT6775_ID: 2770 sio_data->kind = nct6775; 2771 sio_name = sio_name_NCT6775; 2772 break; 2773 case SIO_NCT6776_ID: 2774 sio_data->kind = nct6776; 2775 sio_name = sio_name_NCT6776; 2776 break; 2777 default: 2778 if (val != 0xffff) 2779 pr_debug("unsupported chip ID: 0x%04x\n", val); 2780 superio_exit(sioaddr); 2781 return -ENODEV; 2782 } 2783 2784 /* We have a known chip, find the HWM I/O address */ 2785 superio_select(sioaddr, W83627EHF_LD_HWM); 2786 val = (superio_inb(sioaddr, SIO_REG_ADDR) << 8) 2787 | superio_inb(sioaddr, SIO_REG_ADDR + 1); 2788 *addr = val & IOREGION_ALIGNMENT; 2789 if (*addr == 0) { 2790 pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n"); 2791 superio_exit(sioaddr); 2792 return -ENODEV; 2793 } 2794 2795 /* Activate logical device if needed */ 2796 val = superio_inb(sioaddr, SIO_REG_ENABLE); 2797 if (!(val & 0x01)) { 2798 pr_warn("Forcibly enabling Super-I/O. Sensor is probably unusable.\n"); 2799 superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01); 2800 } 2801 2802 superio_exit(sioaddr); 2803 pr_info("Found %s chip at %#x\n", sio_name, *addr); 2804 sio_data->sioreg = sioaddr; 2805 2806 return 0; 2807 } 2808 2809 /* 2810 * when Super-I/O functions move to a separate file, the Super-I/O 2811 * bus will manage the lifetime of the device and this module will only keep 2812 * track of the w83627ehf driver. But since we platform_device_alloc(), we 2813 * must keep track of the device 2814 */ 2815 static struct platform_device *pdev; 2816 2817 static int __init sensors_w83627ehf_init(void) 2818 { 2819 int err; 2820 unsigned short address; 2821 struct resource res; 2822 struct w83627ehf_sio_data sio_data; 2823 2824 /* 2825 * initialize sio_data->kind and sio_data->sioreg. 2826 * 2827 * when Super-I/O functions move to a separate file, the Super-I/O 2828 * driver will probe 0x2e and 0x4e and auto-detect the presence of a 2829 * w83627ehf hardware monitor, and call probe() 2830 */ 2831 if (w83627ehf_find(0x2e, &address, &sio_data) && 2832 w83627ehf_find(0x4e, &address, &sio_data)) 2833 return -ENODEV; 2834 2835 err = platform_driver_register(&w83627ehf_driver); 2836 if (err) 2837 goto exit; 2838 2839 pdev = platform_device_alloc(DRVNAME, address); 2840 if (!pdev) { 2841 err = -ENOMEM; 2842 pr_err("Device allocation failed\n"); 2843 goto exit_unregister; 2844 } 2845 2846 err = platform_device_add_data(pdev, &sio_data, 2847 sizeof(struct w83627ehf_sio_data)); 2848 if (err) { 2849 pr_err("Platform data allocation failed\n"); 2850 goto exit_device_put; 2851 } 2852 2853 memset(&res, 0, sizeof(res)); 2854 res.name = DRVNAME; 2855 res.start = address + IOREGION_OFFSET; 2856 res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1; 2857 res.flags = IORESOURCE_IO; 2858 2859 err = acpi_check_resource_conflict(&res); 2860 if (err) 2861 goto exit_device_put; 2862 2863 err = platform_device_add_resources(pdev, &res, 1); 2864 if (err) { 2865 pr_err("Device resource addition failed (%d)\n", err); 2866 goto exit_device_put; 2867 } 2868 2869 /* platform_device_add calls probe() */ 2870 err = platform_device_add(pdev); 2871 if (err) { 2872 pr_err("Device addition failed (%d)\n", err); 2873 goto exit_device_put; 2874 } 2875 2876 return 0; 2877 2878 exit_device_put: 2879 platform_device_put(pdev); 2880 exit_unregister: 2881 platform_driver_unregister(&w83627ehf_driver); 2882 exit: 2883 return err; 2884 } 2885 2886 static void __exit sensors_w83627ehf_exit(void) 2887 { 2888 platform_device_unregister(pdev); 2889 platform_driver_unregister(&w83627ehf_driver); 2890 } 2891 2892 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); 2893 MODULE_DESCRIPTION("W83627EHF driver"); 2894 MODULE_LICENSE("GPL"); 2895 2896 module_init(sensors_w83627ehf_init); 2897 module_exit(sensors_w83627ehf_exit); 2898