w83795.c revision dcd8f39230b9f724ba4f55f14ed2bb8119204385
1/* 2 * w83795.c - Linux kernel driver for hardware monitoring 3 * Copyright (C) 2008 Nuvoton Technology Corp. 4 * Wei Song 5 * Copyright (C) 2010 Jean Delvare <khali@linux-fr.org> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation - version 2. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 * 02110-1301 USA. 20 * 21 * Supports following chips: 22 * 23 * Chip #vin #fanin #pwm #temp #dts wchipid vendid i2c ISA 24 * w83795g 21 14 8 6 8 0x79 0x5ca3 yes no 25 * w83795adg 18 14 2 6 8 0x79 0x5ca3 yes no 26 */ 27 28#include <linux/kernel.h> 29#include <linux/module.h> 30#include <linux/init.h> 31#include <linux/slab.h> 32#include <linux/i2c.h> 33#include <linux/hwmon.h> 34#include <linux/hwmon-sysfs.h> 35#include <linux/err.h> 36#include <linux/mutex.h> 37#include <linux/delay.h> 38#include <linux/jiffies.h> 39 40/* Addresses to scan */ 41static const unsigned short normal_i2c[] = { 42 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END 43}; 44 45 46static bool reset; 47module_param(reset, bool, 0); 48MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended"); 49 50 51#define W83795_REG_BANKSEL 0x00 52#define W83795_REG_VENDORID 0xfd 53#define W83795_REG_CHIPID 0xfe 54#define W83795_REG_DEVICEID 0xfb 55#define W83795_REG_DEVICEID_A 0xff 56 57#define W83795_REG_I2C_ADDR 0xfc 58#define W83795_REG_CONFIG 0x01 59#define W83795_REG_CONFIG_CONFIG48 0x04 60#define W83795_REG_CONFIG_START 0x01 61 62/* Multi-Function Pin Ctrl Registers */ 63#define W83795_REG_VOLT_CTRL1 0x02 64#define W83795_REG_VOLT_CTRL2 0x03 65#define W83795_REG_TEMP_CTRL1 0x04 66#define W83795_REG_TEMP_CTRL2 0x05 67#define W83795_REG_FANIN_CTRL1 0x06 68#define W83795_REG_FANIN_CTRL2 0x07 69#define W83795_REG_VMIGB_CTRL 0x08 70 71#define TEMP_READ 0 72#define TEMP_CRIT 1 73#define TEMP_CRIT_HYST 2 74#define TEMP_WARN 3 75#define TEMP_WARN_HYST 4 76/* 77 * only crit and crit_hyst affect real-time alarm status 78 * current crit crit_hyst warn warn_hyst 79 */ 80static const u16 W83795_REG_TEMP[][5] = { 81 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */ 82 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */ 83 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */ 84 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */ 85 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */ 86 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */ 87}; 88 89#define IN_READ 0 90#define IN_MAX 1 91#define IN_LOW 2 92static const u16 W83795_REG_IN[][3] = { 93 /* Current, HL, LL */ 94 {0x10, 0x70, 0x71}, /* VSEN1 */ 95 {0x11, 0x72, 0x73}, /* VSEN2 */ 96 {0x12, 0x74, 0x75}, /* VSEN3 */ 97 {0x13, 0x76, 0x77}, /* VSEN4 */ 98 {0x14, 0x78, 0x79}, /* VSEN5 */ 99 {0x15, 0x7a, 0x7b}, /* VSEN6 */ 100 {0x16, 0x7c, 0x7d}, /* VSEN7 */ 101 {0x17, 0x7e, 0x7f}, /* VSEN8 */ 102 {0x18, 0x80, 0x81}, /* VSEN9 */ 103 {0x19, 0x82, 0x83}, /* VSEN10 */ 104 {0x1A, 0x84, 0x85}, /* VSEN11 */ 105 {0x1B, 0x86, 0x87}, /* VTT */ 106 {0x1C, 0x88, 0x89}, /* 3VDD */ 107 {0x1D, 0x8a, 0x8b}, /* 3VSB */ 108 {0x1E, 0x8c, 0x8d}, /* VBAT */ 109 {0x1F, 0xa6, 0xa7}, /* VSEN12 */ 110 {0x20, 0xaa, 0xab}, /* VSEN13 */ 111 {0x21, 0x96, 0x97}, /* VSEN14 */ 112 {0x22, 0x9a, 0x9b}, /* VSEN15 */ 113 {0x23, 0x9e, 0x9f}, /* VSEN16 */ 114 {0x24, 0xa2, 0xa3}, /* VSEN17 */ 115}; 116#define W83795_REG_VRLSB 0x3C 117 118static const u8 W83795_REG_IN_HL_LSB[] = { 119 0x8e, /* VSEN1-4 */ 120 0x90, /* VSEN5-8 */ 121 0x92, /* VSEN9-11 */ 122 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */ 123 0xa8, /* VSEN12 */ 124 0xac, /* VSEN13 */ 125 0x98, /* VSEN14 */ 126 0x9c, /* VSEN15 */ 127 0xa0, /* VSEN16 */ 128 0xa4, /* VSEN17 */ 129}; 130 131#define IN_LSB_REG(index, type) \ 132 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \ 133 : (W83795_REG_IN_HL_LSB[(index)] + 1)) 134 135#define IN_LSB_SHIFT 0 136#define IN_LSB_IDX 1 137static const u8 IN_LSB_SHIFT_IDX[][2] = { 138 /* High/Low LSB shift, LSB No. */ 139 {0x00, 0x00}, /* VSEN1 */ 140 {0x02, 0x00}, /* VSEN2 */ 141 {0x04, 0x00}, /* VSEN3 */ 142 {0x06, 0x00}, /* VSEN4 */ 143 {0x00, 0x01}, /* VSEN5 */ 144 {0x02, 0x01}, /* VSEN6 */ 145 {0x04, 0x01}, /* VSEN7 */ 146 {0x06, 0x01}, /* VSEN8 */ 147 {0x00, 0x02}, /* VSEN9 */ 148 {0x02, 0x02}, /* VSEN10 */ 149 {0x04, 0x02}, /* VSEN11 */ 150 {0x00, 0x03}, /* VTT */ 151 {0x02, 0x03}, /* 3VDD */ 152 {0x04, 0x03}, /* 3VSB */ 153 {0x06, 0x03}, /* VBAT */ 154 {0x06, 0x04}, /* VSEN12 */ 155 {0x06, 0x05}, /* VSEN13 */ 156 {0x06, 0x06}, /* VSEN14 */ 157 {0x06, 0x07}, /* VSEN15 */ 158 {0x06, 0x08}, /* VSEN16 */ 159 {0x06, 0x09}, /* VSEN17 */ 160}; 161 162 163#define W83795_REG_FAN(index) (0x2E + (index)) 164#define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index)) 165#define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2) 166#define W83795_REG_FAN_MIN_LSB_SHIFT(index) \ 167 (((index) & 1) ? 4 : 0) 168 169#define W83795_REG_VID_CTRL 0x6A 170 171#define W83795_REG_ALARM_CTRL 0x40 172#define ALARM_CTRL_RTSACS (1 << 7) 173#define W83795_REG_ALARM(index) (0x41 + (index)) 174#define W83795_REG_CLR_CHASSIS 0x4D 175#define W83795_REG_BEEP(index) (0x50 + (index)) 176 177#define W83795_REG_OVT_CFG 0x58 178#define OVT_CFG_SEL (1 << 7) 179 180 181#define W83795_REG_FCMS1 0x201 182#define W83795_REG_FCMS2 0x208 183#define W83795_REG_TFMR(index) (0x202 + (index)) 184#define W83795_REG_FOMC 0x20F 185 186#define W83795_REG_TSS(index) (0x209 + (index)) 187 188#define TSS_MAP_RESERVED 0xff 189static const u8 tss_map[4][6] = { 190 { 0, 1, 2, 3, 4, 5}, 191 { 6, 7, 8, 9, 0, 1}, 192 {10, 11, 12, 13, 2, 3}, 193 { 4, 5, 4, 5, TSS_MAP_RESERVED, TSS_MAP_RESERVED}, 194}; 195 196#define PWM_OUTPUT 0 197#define PWM_FREQ 1 198#define PWM_START 2 199#define PWM_NONSTOP 3 200#define PWM_STOP_TIME 4 201#define W83795_REG_PWM(index, nr) (0x210 + (nr) * 8 + (index)) 202 203#define W83795_REG_FTSH(index) (0x240 + (index) * 2) 204#define W83795_REG_FTSL(index) (0x241 + (index) * 2) 205#define W83795_REG_TFTS 0x250 206 207#define TEMP_PWM_TTTI 0 208#define TEMP_PWM_CTFS 1 209#define TEMP_PWM_HCT 2 210#define TEMP_PWM_HOT 3 211#define W83795_REG_TTTI(index) (0x260 + (index)) 212#define W83795_REG_CTFS(index) (0x268 + (index)) 213#define W83795_REG_HT(index) (0x270 + (index)) 214 215#define SF4_TEMP 0 216#define SF4_PWM 1 217#define W83795_REG_SF4_TEMP(temp_num, index) \ 218 (0x280 + 0x10 * (temp_num) + (index)) 219#define W83795_REG_SF4_PWM(temp_num, index) \ 220 (0x288 + 0x10 * (temp_num) + (index)) 221 222#define W83795_REG_DTSC 0x301 223#define W83795_REG_DTSE 0x302 224#define W83795_REG_DTS(index) (0x26 + (index)) 225#define W83795_REG_PECI_TBASE(index) (0x320 + (index)) 226 227#define DTS_CRIT 0 228#define DTS_CRIT_HYST 1 229#define DTS_WARN 2 230#define DTS_WARN_HYST 3 231#define W83795_REG_DTS_EXT(index) (0xB2 + (index)) 232 233#define SETUP_PWM_DEFAULT 0 234#define SETUP_PWM_UPTIME 1 235#define SETUP_PWM_DOWNTIME 2 236#define W83795_REG_SETUP_PWM(index) (0x20C + (index)) 237 238static inline u16 in_from_reg(u8 index, u16 val) 239{ 240 /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */ 241 if (index >= 12 && index <= 14) 242 return val * 6; 243 else 244 return val * 2; 245} 246 247static inline u16 in_to_reg(u8 index, u16 val) 248{ 249 if (index >= 12 && index <= 14) 250 return val / 6; 251 else 252 return val / 2; 253} 254 255static inline unsigned long fan_from_reg(u16 val) 256{ 257 if ((val == 0xfff) || (val == 0)) 258 return 0; 259 return 1350000UL / val; 260} 261 262static inline u16 fan_to_reg(long rpm) 263{ 264 if (rpm <= 0) 265 return 0x0fff; 266 return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe); 267} 268 269static inline unsigned long time_from_reg(u8 reg) 270{ 271 return reg * 100; 272} 273 274static inline u8 time_to_reg(unsigned long val) 275{ 276 return SENSORS_LIMIT((val + 50) / 100, 0, 0xff); 277} 278 279static inline long temp_from_reg(s8 reg) 280{ 281 return reg * 1000; 282} 283 284static inline s8 temp_to_reg(long val, s8 min, s8 max) 285{ 286 return SENSORS_LIMIT(val / 1000, min, max); 287} 288 289static const u16 pwm_freq_cksel0[16] = { 290 1024, 512, 341, 256, 205, 171, 146, 128, 291 85, 64, 32, 16, 8, 4, 2, 1 292}; 293 294static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin) 295{ 296 unsigned long base_clock; 297 298 if (reg & 0x80) { 299 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 300 return base_clock / ((reg & 0x7f) + 1); 301 } else 302 return pwm_freq_cksel0[reg & 0x0f]; 303} 304 305static u8 pwm_freq_to_reg(unsigned long val, u16 clkin) 306{ 307 unsigned long base_clock; 308 u8 reg0, reg1; 309 unsigned long best0, best1; 310 311 /* Best fit for cksel = 0 */ 312 for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) { 313 if (val > (pwm_freq_cksel0[reg0] + 314 pwm_freq_cksel0[reg0 + 1]) / 2) 315 break; 316 } 317 if (val < 375) /* cksel = 1 can't beat this */ 318 return reg0; 319 best0 = pwm_freq_cksel0[reg0]; 320 321 /* Best fit for cksel = 1 */ 322 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 323 reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128); 324 best1 = base_clock / reg1; 325 reg1 = 0x80 | (reg1 - 1); 326 327 /* Choose the closest one */ 328 if (abs(val - best0) > abs(val - best1)) 329 return reg1; 330 else 331 return reg0; 332} 333 334enum chip_types {w83795g, w83795adg}; 335 336struct w83795_data { 337 struct device *hwmon_dev; 338 struct mutex update_lock; 339 unsigned long last_updated; /* In jiffies */ 340 enum chip_types chip_type; 341 342 u8 bank; 343 344 u32 has_in; /* Enable monitor VIN or not */ 345 u8 has_dyn_in; /* Only in2-0 can have this */ 346 u16 in[21][3]; /* Register value, read/high/low */ 347 u8 in_lsb[10][3]; /* LSB Register value, high/low */ 348 u8 has_gain; /* has gain: in17-20 * 8 */ 349 350 u16 has_fan; /* Enable fan14-1 or not */ 351 u16 fan[14]; /* Register value combine */ 352 u16 fan_min[14]; /* Register value combine */ 353 354 u8 has_temp; /* Enable monitor temp6-1 or not */ 355 s8 temp[6][5]; /* current, crit, crit_hyst, warn, warn_hyst */ 356 u8 temp_read_vrlsb[6]; 357 u8 temp_mode; /* Bit vector, 0 = TR, 1 = TD */ 358 u8 temp_src[3]; /* Register value */ 359 360 u8 enable_dts; /* 361 * Enable PECI and SB-TSI, 362 * bit 0: =1 enable, =0 disable, 363 * bit 1: =1 AMD SB-TSI, =0 Intel PECI 364 */ 365 u8 has_dts; /* Enable monitor DTS temp */ 366 s8 dts[8]; /* Register value */ 367 u8 dts_read_vrlsb[8]; /* Register value */ 368 s8 dts_ext[4]; /* Register value */ 369 370 u8 has_pwm; /* 371 * 795g supports 8 pwm, 795adg only supports 2, 372 * no config register, only affected by chip 373 * type 374 */ 375 u8 pwm[8][5]; /* 376 * Register value, output, freq, start, 377 * non stop, stop time 378 */ 379 u16 clkin; /* CLKIN frequency in kHz */ 380 u8 pwm_fcms[2]; /* Register value */ 381 u8 pwm_tfmr[6]; /* Register value */ 382 u8 pwm_fomc; /* Register value */ 383 384 u16 target_speed[8]; /* 385 * Register value, target speed for speed 386 * cruise 387 */ 388 u8 tol_speed; /* tolerance of target speed */ 389 u8 pwm_temp[6][4]; /* TTTI, CTFS, HCT, HOT */ 390 u8 sf4_reg[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */ 391 392 u8 setup_pwm[3]; /* Register value */ 393 394 u8 alarms[6]; /* Register value */ 395 u8 enable_beep; 396 u8 beeps[6]; /* Register value */ 397 398 char valid; 399 char valid_limits; 400 char valid_pwm_config; 401}; 402 403/* 404 * Hardware access 405 * We assume that nobdody can change the bank outside the driver. 406 */ 407 408/* Must be called with data->update_lock held, except during initialization */ 409static int w83795_set_bank(struct i2c_client *client, u8 bank) 410{ 411 struct w83795_data *data = i2c_get_clientdata(client); 412 int err; 413 414 /* If the same bank is already set, nothing to do */ 415 if ((data->bank & 0x07) == bank) 416 return 0; 417 418 /* Change to new bank, preserve all other bits */ 419 bank |= data->bank & ~0x07; 420 err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank); 421 if (err < 0) { 422 dev_err(&client->dev, 423 "Failed to set bank to %d, err %d\n", 424 (int)bank, err); 425 return err; 426 } 427 data->bank = bank; 428 429 return 0; 430} 431 432/* Must be called with data->update_lock held, except during initialization */ 433static u8 w83795_read(struct i2c_client *client, u16 reg) 434{ 435 int err; 436 437 err = w83795_set_bank(client, reg >> 8); 438 if (err < 0) 439 return 0x00; /* Arbitrary */ 440 441 err = i2c_smbus_read_byte_data(client, reg & 0xff); 442 if (err < 0) { 443 dev_err(&client->dev, 444 "Failed to read from register 0x%03x, err %d\n", 445 (int)reg, err); 446 return 0x00; /* Arbitrary */ 447 } 448 return err; 449} 450 451/* Must be called with data->update_lock held, except during initialization */ 452static int w83795_write(struct i2c_client *client, u16 reg, u8 value) 453{ 454 int err; 455 456 err = w83795_set_bank(client, reg >> 8); 457 if (err < 0) 458 return err; 459 460 err = i2c_smbus_write_byte_data(client, reg & 0xff, value); 461 if (err < 0) 462 dev_err(&client->dev, 463 "Failed to write to register 0x%03x, err %d\n", 464 (int)reg, err); 465 return err; 466} 467 468static void w83795_update_limits(struct i2c_client *client) 469{ 470 struct w83795_data *data = i2c_get_clientdata(client); 471 int i, limit; 472 u8 lsb; 473 474 /* Read the voltage limits */ 475 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 476 if (!(data->has_in & (1 << i))) 477 continue; 478 data->in[i][IN_MAX] = 479 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 480 data->in[i][IN_LOW] = 481 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 482 } 483 for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) { 484 if ((i == 2 && data->chip_type == w83795adg) || 485 (i >= 4 && !(data->has_in & (1 << (i + 11))))) 486 continue; 487 data->in_lsb[i][IN_MAX] = 488 w83795_read(client, IN_LSB_REG(i, IN_MAX)); 489 data->in_lsb[i][IN_LOW] = 490 w83795_read(client, IN_LSB_REG(i, IN_LOW)); 491 } 492 493 /* Read the fan limits */ 494 lsb = 0; /* Silent false gcc warning */ 495 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 496 /* 497 * Each register contains LSB for 2 fans, but we want to 498 * read it only once to save time 499 */ 500 if ((i & 1) == 0 && (data->has_fan & (3 << i))) 501 lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i)); 502 503 if (!(data->has_fan & (1 << i))) 504 continue; 505 data->fan_min[i] = 506 w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4; 507 data->fan_min[i] |= 508 (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F; 509 } 510 511 /* Read the temperature limits */ 512 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 513 if (!(data->has_temp & (1 << i))) 514 continue; 515 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++) 516 data->temp[i][limit] = 517 w83795_read(client, W83795_REG_TEMP[i][limit]); 518 } 519 520 /* Read the DTS limits */ 521 if (data->enable_dts) { 522 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++) 523 data->dts_ext[limit] = 524 w83795_read(client, W83795_REG_DTS_EXT(limit)); 525 } 526 527 /* Read beep settings */ 528 if (data->enable_beep) { 529 for (i = 0; i < ARRAY_SIZE(data->beeps); i++) 530 data->beeps[i] = 531 w83795_read(client, W83795_REG_BEEP(i)); 532 } 533 534 data->valid_limits = 1; 535} 536 537static struct w83795_data *w83795_update_pwm_config(struct device *dev) 538{ 539 struct i2c_client *client = to_i2c_client(dev); 540 struct w83795_data *data = i2c_get_clientdata(client); 541 int i, tmp; 542 543 mutex_lock(&data->update_lock); 544 545 if (data->valid_pwm_config) 546 goto END; 547 548 /* Read temperature source selection */ 549 for (i = 0; i < ARRAY_SIZE(data->temp_src); i++) 550 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i)); 551 552 /* Read automatic fan speed control settings */ 553 data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1); 554 data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2); 555 for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++) 556 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i)); 557 data->pwm_fomc = w83795_read(client, W83795_REG_FOMC); 558 for (i = 0; i < data->has_pwm; i++) { 559 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++) 560 data->pwm[i][tmp] = 561 w83795_read(client, W83795_REG_PWM(i, tmp)); 562 } 563 for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) { 564 data->target_speed[i] = 565 w83795_read(client, W83795_REG_FTSH(i)) << 4; 566 data->target_speed[i] |= 567 w83795_read(client, W83795_REG_FTSL(i)) >> 4; 568 } 569 data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f; 570 571 for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) { 572 data->pwm_temp[i][TEMP_PWM_TTTI] = 573 w83795_read(client, W83795_REG_TTTI(i)) & 0x7f; 574 data->pwm_temp[i][TEMP_PWM_CTFS] = 575 w83795_read(client, W83795_REG_CTFS(i)); 576 tmp = w83795_read(client, W83795_REG_HT(i)); 577 data->pwm_temp[i][TEMP_PWM_HCT] = tmp >> 4; 578 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f; 579 } 580 581 /* Read SmartFanIV trip points */ 582 for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) { 583 for (tmp = 0; tmp < 7; tmp++) { 584 data->sf4_reg[i][SF4_TEMP][tmp] = 585 w83795_read(client, 586 W83795_REG_SF4_TEMP(i, tmp)); 587 data->sf4_reg[i][SF4_PWM][tmp] = 588 w83795_read(client, W83795_REG_SF4_PWM(i, tmp)); 589 } 590 } 591 592 /* Read setup PWM */ 593 for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++) 594 data->setup_pwm[i] = 595 w83795_read(client, W83795_REG_SETUP_PWM(i)); 596 597 data->valid_pwm_config = 1; 598 599END: 600 mutex_unlock(&data->update_lock); 601 return data; 602} 603 604static struct w83795_data *w83795_update_device(struct device *dev) 605{ 606 struct i2c_client *client = to_i2c_client(dev); 607 struct w83795_data *data = i2c_get_clientdata(client); 608 u16 tmp; 609 u8 intrusion; 610 int i; 611 612 mutex_lock(&data->update_lock); 613 614 if (!data->valid_limits) 615 w83795_update_limits(client); 616 617 if (!(time_after(jiffies, data->last_updated + HZ * 2) 618 || !data->valid)) 619 goto END; 620 621 /* Update the voltages value */ 622 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 623 if (!(data->has_in & (1 << i))) 624 continue; 625 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2; 626 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6; 627 data->in[i][IN_READ] = tmp; 628 } 629 630 /* in0-2 can have dynamic limits (W83795G only) */ 631 if (data->has_dyn_in) { 632 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX)); 633 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW)); 634 635 for (i = 0; i < 3; i++) { 636 if (!(data->has_dyn_in & (1 << i))) 637 continue; 638 data->in[i][IN_MAX] = 639 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 640 data->in[i][IN_LOW] = 641 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 642 data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03; 643 data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03; 644 } 645 } 646 647 /* Update fan */ 648 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 649 if (!(data->has_fan & (1 << i))) 650 continue; 651 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4; 652 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4; 653 } 654 655 /* Update temperature */ 656 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 657 data->temp[i][TEMP_READ] = 658 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]); 659 data->temp_read_vrlsb[i] = 660 w83795_read(client, W83795_REG_VRLSB); 661 } 662 663 /* Update dts temperature */ 664 if (data->enable_dts) { 665 for (i = 0; i < ARRAY_SIZE(data->dts); i++) { 666 if (!(data->has_dts & (1 << i))) 667 continue; 668 data->dts[i] = 669 w83795_read(client, W83795_REG_DTS(i)); 670 data->dts_read_vrlsb[i] = 671 w83795_read(client, W83795_REG_VRLSB); 672 } 673 } 674 675 /* Update pwm output */ 676 for (i = 0; i < data->has_pwm; i++) { 677 data->pwm[i][PWM_OUTPUT] = 678 w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT)); 679 } 680 681 /* 682 * Update intrusion and alarms 683 * It is important to read intrusion first, because reading from 684 * register SMI STS6 clears the interrupt status temporarily. 685 */ 686 tmp = w83795_read(client, W83795_REG_ALARM_CTRL); 687 /* Switch to interrupt status for intrusion if needed */ 688 if (tmp & ALARM_CTRL_RTSACS) 689 w83795_write(client, W83795_REG_ALARM_CTRL, 690 tmp & ~ALARM_CTRL_RTSACS); 691 intrusion = w83795_read(client, W83795_REG_ALARM(5)) & (1 << 6); 692 /* Switch to real-time alarms */ 693 w83795_write(client, W83795_REG_ALARM_CTRL, tmp | ALARM_CTRL_RTSACS); 694 for (i = 0; i < ARRAY_SIZE(data->alarms); i++) 695 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i)); 696 data->alarms[5] |= intrusion; 697 /* Restore original configuration if needed */ 698 if (!(tmp & ALARM_CTRL_RTSACS)) 699 w83795_write(client, W83795_REG_ALARM_CTRL, 700 tmp & ~ALARM_CTRL_RTSACS); 701 702 data->last_updated = jiffies; 703 data->valid = 1; 704 705END: 706 mutex_unlock(&data->update_lock); 707 return data; 708} 709 710/* 711 * Sysfs attributes 712 */ 713 714#define ALARM_STATUS 0 715#define BEEP_ENABLE 1 716static ssize_t 717show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf) 718{ 719 struct w83795_data *data = w83795_update_device(dev); 720 struct sensor_device_attribute_2 *sensor_attr = 721 to_sensor_dev_attr_2(attr); 722 int nr = sensor_attr->nr; 723 int index = sensor_attr->index >> 3; 724 int bit = sensor_attr->index & 0x07; 725 u8 val; 726 727 if (nr == ALARM_STATUS) 728 val = (data->alarms[index] >> bit) & 1; 729 else /* BEEP_ENABLE */ 730 val = (data->beeps[index] >> bit) & 1; 731 732 return sprintf(buf, "%u\n", val); 733} 734 735static ssize_t 736store_beep(struct device *dev, struct device_attribute *attr, 737 const char *buf, size_t count) 738{ 739 struct i2c_client *client = to_i2c_client(dev); 740 struct w83795_data *data = i2c_get_clientdata(client); 741 struct sensor_device_attribute_2 *sensor_attr = 742 to_sensor_dev_attr_2(attr); 743 int index = sensor_attr->index >> 3; 744 int shift = sensor_attr->index & 0x07; 745 u8 beep_bit = 1 << shift; 746 unsigned long val; 747 748 if (kstrtoul(buf, 10, &val) < 0) 749 return -EINVAL; 750 if (val != 0 && val != 1) 751 return -EINVAL; 752 753 mutex_lock(&data->update_lock); 754 data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index)); 755 data->beeps[index] &= ~beep_bit; 756 data->beeps[index] |= val << shift; 757 w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]); 758 mutex_unlock(&data->update_lock); 759 760 return count; 761} 762 763/* Write 0 to clear chassis alarm */ 764static ssize_t 765store_chassis_clear(struct device *dev, 766 struct device_attribute *attr, const char *buf, 767 size_t count) 768{ 769 struct i2c_client *client = to_i2c_client(dev); 770 struct w83795_data *data = i2c_get_clientdata(client); 771 unsigned long val; 772 773 if (kstrtoul(buf, 10, &val) < 0 || val != 0) 774 return -EINVAL; 775 776 mutex_lock(&data->update_lock); 777 val = w83795_read(client, W83795_REG_CLR_CHASSIS); 778 val |= 0x80; 779 w83795_write(client, W83795_REG_CLR_CHASSIS, val); 780 781 /* Clear status and force cache refresh */ 782 w83795_read(client, W83795_REG_ALARM(5)); 783 data->valid = 0; 784 mutex_unlock(&data->update_lock); 785 return count; 786} 787 788#define FAN_INPUT 0 789#define FAN_MIN 1 790static ssize_t 791show_fan(struct device *dev, struct device_attribute *attr, char *buf) 792{ 793 struct sensor_device_attribute_2 *sensor_attr = 794 to_sensor_dev_attr_2(attr); 795 int nr = sensor_attr->nr; 796 int index = sensor_attr->index; 797 struct w83795_data *data = w83795_update_device(dev); 798 u16 val; 799 800 if (nr == FAN_INPUT) 801 val = data->fan[index] & 0x0fff; 802 else 803 val = data->fan_min[index] & 0x0fff; 804 805 return sprintf(buf, "%lu\n", fan_from_reg(val)); 806} 807 808static ssize_t 809store_fan_min(struct device *dev, struct device_attribute *attr, 810 const char *buf, size_t count) 811{ 812 struct sensor_device_attribute_2 *sensor_attr = 813 to_sensor_dev_attr_2(attr); 814 int index = sensor_attr->index; 815 struct i2c_client *client = to_i2c_client(dev); 816 struct w83795_data *data = i2c_get_clientdata(client); 817 unsigned long val; 818 819 if (kstrtoul(buf, 10, &val)) 820 return -EINVAL; 821 val = fan_to_reg(val); 822 823 mutex_lock(&data->update_lock); 824 data->fan_min[index] = val; 825 w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff); 826 val &= 0x0f; 827 if (index & 1) { 828 val <<= 4; 829 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 830 & 0x0f; 831 } else { 832 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 833 & 0xf0; 834 } 835 w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff); 836 mutex_unlock(&data->update_lock); 837 838 return count; 839} 840 841static ssize_t 842show_pwm(struct device *dev, struct device_attribute *attr, char *buf) 843{ 844 struct w83795_data *data; 845 struct sensor_device_attribute_2 *sensor_attr = 846 to_sensor_dev_attr_2(attr); 847 int nr = sensor_attr->nr; 848 int index = sensor_attr->index; 849 unsigned int val; 850 851 data = nr == PWM_OUTPUT ? w83795_update_device(dev) 852 : w83795_update_pwm_config(dev); 853 854 switch (nr) { 855 case PWM_STOP_TIME: 856 val = time_from_reg(data->pwm[index][nr]); 857 break; 858 case PWM_FREQ: 859 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin); 860 break; 861 default: 862 val = data->pwm[index][nr]; 863 break; 864 } 865 866 return sprintf(buf, "%u\n", val); 867} 868 869static ssize_t 870store_pwm(struct device *dev, struct device_attribute *attr, 871 const char *buf, size_t count) 872{ 873 struct i2c_client *client = to_i2c_client(dev); 874 struct w83795_data *data = i2c_get_clientdata(client); 875 struct sensor_device_attribute_2 *sensor_attr = 876 to_sensor_dev_attr_2(attr); 877 int nr = sensor_attr->nr; 878 int index = sensor_attr->index; 879 unsigned long val; 880 881 if (kstrtoul(buf, 10, &val) < 0) 882 return -EINVAL; 883 884 mutex_lock(&data->update_lock); 885 switch (nr) { 886 case PWM_STOP_TIME: 887 val = time_to_reg(val); 888 break; 889 case PWM_FREQ: 890 val = pwm_freq_to_reg(val, data->clkin); 891 break; 892 default: 893 val = SENSORS_LIMIT(val, 0, 0xff); 894 break; 895 } 896 w83795_write(client, W83795_REG_PWM(index, nr), val); 897 data->pwm[index][nr] = val; 898 mutex_unlock(&data->update_lock); 899 return count; 900} 901 902static ssize_t 903show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf) 904{ 905 struct sensor_device_attribute_2 *sensor_attr = 906 to_sensor_dev_attr_2(attr); 907 struct w83795_data *data = w83795_update_pwm_config(dev); 908 int index = sensor_attr->index; 909 u8 tmp; 910 911 /* Speed cruise mode */ 912 if (data->pwm_fcms[0] & (1 << index)) { 913 tmp = 2; 914 goto out; 915 } 916 /* Thermal cruise or SmartFan IV mode */ 917 for (tmp = 0; tmp < 6; tmp++) { 918 if (data->pwm_tfmr[tmp] & (1 << index)) { 919 tmp = 3; 920 goto out; 921 } 922 } 923 /* Manual mode */ 924 tmp = 1; 925 926out: 927 return sprintf(buf, "%u\n", tmp); 928} 929 930static ssize_t 931store_pwm_enable(struct device *dev, struct device_attribute *attr, 932 const char *buf, size_t count) 933{ 934 struct i2c_client *client = to_i2c_client(dev); 935 struct w83795_data *data = w83795_update_pwm_config(dev); 936 struct sensor_device_attribute_2 *sensor_attr = 937 to_sensor_dev_attr_2(attr); 938 int index = sensor_attr->index; 939 unsigned long val; 940 int i; 941 942 if (kstrtoul(buf, 10, &val) < 0) 943 return -EINVAL; 944 if (val < 1 || val > 2) 945 return -EINVAL; 946 947#ifndef CONFIG_SENSORS_W83795_FANCTRL 948 if (val > 1) { 949 dev_warn(dev, "Automatic fan speed control support disabled\n"); 950 dev_warn(dev, "Build with CONFIG_SENSORS_W83795_FANCTRL=y if you want it\n"); 951 return -EOPNOTSUPP; 952 } 953#endif 954 955 mutex_lock(&data->update_lock); 956 switch (val) { 957 case 1: 958 /* Clear speed cruise mode bits */ 959 data->pwm_fcms[0] &= ~(1 << index); 960 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 961 /* Clear thermal cruise mode bits */ 962 for (i = 0; i < 6; i++) { 963 data->pwm_tfmr[i] &= ~(1 << index); 964 w83795_write(client, W83795_REG_TFMR(i), 965 data->pwm_tfmr[i]); 966 } 967 break; 968 case 2: 969 data->pwm_fcms[0] |= (1 << index); 970 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 971 break; 972 } 973 mutex_unlock(&data->update_lock); 974 return count; 975} 976 977static ssize_t 978show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf) 979{ 980 struct w83795_data *data = w83795_update_pwm_config(dev); 981 int index = to_sensor_dev_attr_2(attr)->index; 982 unsigned int mode; 983 984 if (data->pwm_fomc & (1 << index)) 985 mode = 0; /* DC */ 986 else 987 mode = 1; /* PWM */ 988 989 return sprintf(buf, "%u\n", mode); 990} 991 992/* 993 * Check whether a given temperature source can ever be useful. 994 * Returns the number of selectable temperature channels which are 995 * enabled. 996 */ 997static int w83795_tss_useful(const struct w83795_data *data, int tsrc) 998{ 999 int useful = 0, i; 1000 1001 for (i = 0; i < 4; i++) { 1002 if (tss_map[i][tsrc] == TSS_MAP_RESERVED) 1003 continue; 1004 if (tss_map[i][tsrc] < 6) /* Analog */ 1005 useful += (data->has_temp >> tss_map[i][tsrc]) & 1; 1006 else /* Digital */ 1007 useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1; 1008 } 1009 1010 return useful; 1011} 1012 1013static ssize_t 1014show_temp_src(struct device *dev, struct device_attribute *attr, char *buf) 1015{ 1016 struct sensor_device_attribute_2 *sensor_attr = 1017 to_sensor_dev_attr_2(attr); 1018 struct w83795_data *data = w83795_update_pwm_config(dev); 1019 int index = sensor_attr->index; 1020 u8 tmp = data->temp_src[index / 2]; 1021 1022 if (index & 1) 1023 tmp >>= 4; /* Pick high nibble */ 1024 else 1025 tmp &= 0x0f; /* Pick low nibble */ 1026 1027 /* Look-up the actual temperature channel number */ 1028 if (tmp >= 4 || tss_map[tmp][index] == TSS_MAP_RESERVED) 1029 return -EINVAL; /* Shouldn't happen */ 1030 1031 return sprintf(buf, "%u\n", (unsigned int)tss_map[tmp][index] + 1); 1032} 1033 1034static ssize_t 1035store_temp_src(struct device *dev, struct device_attribute *attr, 1036 const char *buf, size_t count) 1037{ 1038 struct i2c_client *client = to_i2c_client(dev); 1039 struct w83795_data *data = w83795_update_pwm_config(dev); 1040 struct sensor_device_attribute_2 *sensor_attr = 1041 to_sensor_dev_attr_2(attr); 1042 int index = sensor_attr->index; 1043 int tmp; 1044 unsigned long channel; 1045 u8 val = index / 2; 1046 1047 if (kstrtoul(buf, 10, &channel) < 0 || 1048 channel < 1 || channel > 14) 1049 return -EINVAL; 1050 1051 /* Check if request can be fulfilled */ 1052 for (tmp = 0; tmp < 4; tmp++) { 1053 if (tss_map[tmp][index] == channel - 1) 1054 break; 1055 } 1056 if (tmp == 4) /* No match */ 1057 return -EINVAL; 1058 1059 mutex_lock(&data->update_lock); 1060 if (index & 1) { 1061 tmp <<= 4; 1062 data->temp_src[val] &= 0x0f; 1063 } else { 1064 data->temp_src[val] &= 0xf0; 1065 } 1066 data->temp_src[val] |= tmp; 1067 w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]); 1068 mutex_unlock(&data->update_lock); 1069 1070 return count; 1071} 1072 1073#define TEMP_PWM_ENABLE 0 1074#define TEMP_PWM_FAN_MAP 1 1075static ssize_t 1076show_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 1077 char *buf) 1078{ 1079 struct w83795_data *data = w83795_update_pwm_config(dev); 1080 struct sensor_device_attribute_2 *sensor_attr = 1081 to_sensor_dev_attr_2(attr); 1082 int nr = sensor_attr->nr; 1083 int index = sensor_attr->index; 1084 u8 tmp = 0xff; 1085 1086 switch (nr) { 1087 case TEMP_PWM_ENABLE: 1088 tmp = (data->pwm_fcms[1] >> index) & 1; 1089 if (tmp) 1090 tmp = 4; 1091 else 1092 tmp = 3; 1093 break; 1094 case TEMP_PWM_FAN_MAP: 1095 tmp = data->pwm_tfmr[index]; 1096 break; 1097 } 1098 1099 return sprintf(buf, "%u\n", tmp); 1100} 1101 1102static ssize_t 1103store_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 1104 const char *buf, size_t count) 1105{ 1106 struct i2c_client *client = to_i2c_client(dev); 1107 struct w83795_data *data = w83795_update_pwm_config(dev); 1108 struct sensor_device_attribute_2 *sensor_attr = 1109 to_sensor_dev_attr_2(attr); 1110 int nr = sensor_attr->nr; 1111 int index = sensor_attr->index; 1112 unsigned long tmp; 1113 1114 if (kstrtoul(buf, 10, &tmp) < 0) 1115 return -EINVAL; 1116 1117 switch (nr) { 1118 case TEMP_PWM_ENABLE: 1119 if (tmp != 3 && tmp != 4) 1120 return -EINVAL; 1121 tmp -= 3; 1122 mutex_lock(&data->update_lock); 1123 data->pwm_fcms[1] &= ~(1 << index); 1124 data->pwm_fcms[1] |= tmp << index; 1125 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]); 1126 mutex_unlock(&data->update_lock); 1127 break; 1128 case TEMP_PWM_FAN_MAP: 1129 mutex_lock(&data->update_lock); 1130 tmp = SENSORS_LIMIT(tmp, 0, 0xff); 1131 w83795_write(client, W83795_REG_TFMR(index), tmp); 1132 data->pwm_tfmr[index] = tmp; 1133 mutex_unlock(&data->update_lock); 1134 break; 1135 } 1136 return count; 1137} 1138 1139#define FANIN_TARGET 0 1140#define FANIN_TOL 1 1141static ssize_t 1142show_fanin(struct device *dev, struct device_attribute *attr, char *buf) 1143{ 1144 struct w83795_data *data = w83795_update_pwm_config(dev); 1145 struct sensor_device_attribute_2 *sensor_attr = 1146 to_sensor_dev_attr_2(attr); 1147 int nr = sensor_attr->nr; 1148 int index = sensor_attr->index; 1149 u16 tmp = 0; 1150 1151 switch (nr) { 1152 case FANIN_TARGET: 1153 tmp = fan_from_reg(data->target_speed[index]); 1154 break; 1155 case FANIN_TOL: 1156 tmp = data->tol_speed; 1157 break; 1158 } 1159 1160 return sprintf(buf, "%u\n", tmp); 1161} 1162 1163static ssize_t 1164store_fanin(struct device *dev, struct device_attribute *attr, 1165 const char *buf, size_t count) 1166{ 1167 struct i2c_client *client = to_i2c_client(dev); 1168 struct w83795_data *data = i2c_get_clientdata(client); 1169 struct sensor_device_attribute_2 *sensor_attr = 1170 to_sensor_dev_attr_2(attr); 1171 int nr = sensor_attr->nr; 1172 int index = sensor_attr->index; 1173 unsigned long val; 1174 1175 if (kstrtoul(buf, 10, &val) < 0) 1176 return -EINVAL; 1177 1178 mutex_lock(&data->update_lock); 1179 switch (nr) { 1180 case FANIN_TARGET: 1181 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff)); 1182 w83795_write(client, W83795_REG_FTSH(index), val >> 4); 1183 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0); 1184 data->target_speed[index] = val; 1185 break; 1186 case FANIN_TOL: 1187 val = SENSORS_LIMIT(val, 0, 0x3f); 1188 w83795_write(client, W83795_REG_TFTS, val); 1189 data->tol_speed = val; 1190 break; 1191 } 1192 mutex_unlock(&data->update_lock); 1193 1194 return count; 1195} 1196 1197 1198static ssize_t 1199show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1200{ 1201 struct w83795_data *data = w83795_update_pwm_config(dev); 1202 struct sensor_device_attribute_2 *sensor_attr = 1203 to_sensor_dev_attr_2(attr); 1204 int nr = sensor_attr->nr; 1205 int index = sensor_attr->index; 1206 long tmp = temp_from_reg(data->pwm_temp[index][nr]); 1207 1208 return sprintf(buf, "%ld\n", tmp); 1209} 1210 1211static ssize_t 1212store_temp_pwm(struct device *dev, struct device_attribute *attr, 1213 const char *buf, size_t count) 1214{ 1215 struct i2c_client *client = to_i2c_client(dev); 1216 struct w83795_data *data = i2c_get_clientdata(client); 1217 struct sensor_device_attribute_2 *sensor_attr = 1218 to_sensor_dev_attr_2(attr); 1219 int nr = sensor_attr->nr; 1220 int index = sensor_attr->index; 1221 unsigned long val; 1222 u8 tmp; 1223 1224 if (kstrtoul(buf, 10, &val) < 0) 1225 return -EINVAL; 1226 val /= 1000; 1227 1228 mutex_lock(&data->update_lock); 1229 switch (nr) { 1230 case TEMP_PWM_TTTI: 1231 val = SENSORS_LIMIT(val, 0, 0x7f); 1232 w83795_write(client, W83795_REG_TTTI(index), val); 1233 break; 1234 case TEMP_PWM_CTFS: 1235 val = SENSORS_LIMIT(val, 0, 0x7f); 1236 w83795_write(client, W83795_REG_CTFS(index), val); 1237 break; 1238 case TEMP_PWM_HCT: 1239 val = SENSORS_LIMIT(val, 0, 0x0f); 1240 tmp = w83795_read(client, W83795_REG_HT(index)); 1241 tmp &= 0x0f; 1242 tmp |= (val << 4) & 0xf0; 1243 w83795_write(client, W83795_REG_HT(index), tmp); 1244 break; 1245 case TEMP_PWM_HOT: 1246 val = SENSORS_LIMIT(val, 0, 0x0f); 1247 tmp = w83795_read(client, W83795_REG_HT(index)); 1248 tmp &= 0xf0; 1249 tmp |= val & 0x0f; 1250 w83795_write(client, W83795_REG_HT(index), tmp); 1251 break; 1252 } 1253 data->pwm_temp[index][nr] = val; 1254 mutex_unlock(&data->update_lock); 1255 1256 return count; 1257} 1258 1259static ssize_t 1260show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1261{ 1262 struct w83795_data *data = w83795_update_pwm_config(dev); 1263 struct sensor_device_attribute_2 *sensor_attr = 1264 to_sensor_dev_attr_2(attr); 1265 int nr = sensor_attr->nr; 1266 int index = sensor_attr->index; 1267 1268 return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]); 1269} 1270 1271static ssize_t 1272store_sf4_pwm(struct device *dev, struct device_attribute *attr, 1273 const char *buf, size_t count) 1274{ 1275 struct i2c_client *client = to_i2c_client(dev); 1276 struct w83795_data *data = i2c_get_clientdata(client); 1277 struct sensor_device_attribute_2 *sensor_attr = 1278 to_sensor_dev_attr_2(attr); 1279 int nr = sensor_attr->nr; 1280 int index = sensor_attr->index; 1281 unsigned long val; 1282 1283 if (kstrtoul(buf, 10, &val) < 0) 1284 return -EINVAL; 1285 1286 mutex_lock(&data->update_lock); 1287 w83795_write(client, W83795_REG_SF4_PWM(index, nr), val); 1288 data->sf4_reg[index][SF4_PWM][nr] = val; 1289 mutex_unlock(&data->update_lock); 1290 1291 return count; 1292} 1293 1294static ssize_t 1295show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf) 1296{ 1297 struct w83795_data *data = w83795_update_pwm_config(dev); 1298 struct sensor_device_attribute_2 *sensor_attr = 1299 to_sensor_dev_attr_2(attr); 1300 int nr = sensor_attr->nr; 1301 int index = sensor_attr->index; 1302 1303 return sprintf(buf, "%u\n", 1304 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000); 1305} 1306 1307static ssize_t 1308store_sf4_temp(struct device *dev, struct device_attribute *attr, 1309 const char *buf, size_t count) 1310{ 1311 struct i2c_client *client = to_i2c_client(dev); 1312 struct w83795_data *data = i2c_get_clientdata(client); 1313 struct sensor_device_attribute_2 *sensor_attr = 1314 to_sensor_dev_attr_2(attr); 1315 int nr = sensor_attr->nr; 1316 int index = sensor_attr->index; 1317 unsigned long val; 1318 1319 if (kstrtoul(buf, 10, &val) < 0) 1320 return -EINVAL; 1321 val /= 1000; 1322 1323 mutex_lock(&data->update_lock); 1324 w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val); 1325 data->sf4_reg[index][SF4_TEMP][nr] = val; 1326 mutex_unlock(&data->update_lock); 1327 1328 return count; 1329} 1330 1331 1332static ssize_t 1333show_temp(struct device *dev, struct device_attribute *attr, char *buf) 1334{ 1335 struct sensor_device_attribute_2 *sensor_attr = 1336 to_sensor_dev_attr_2(attr); 1337 int nr = sensor_attr->nr; 1338 int index = sensor_attr->index; 1339 struct w83795_data *data = w83795_update_device(dev); 1340 long temp = temp_from_reg(data->temp[index][nr]); 1341 1342 if (nr == TEMP_READ) 1343 temp += (data->temp_read_vrlsb[index] >> 6) * 250; 1344 return sprintf(buf, "%ld\n", temp); 1345} 1346 1347static ssize_t 1348store_temp(struct device *dev, struct device_attribute *attr, 1349 const char *buf, size_t count) 1350{ 1351 struct sensor_device_attribute_2 *sensor_attr = 1352 to_sensor_dev_attr_2(attr); 1353 int nr = sensor_attr->nr; 1354 int index = sensor_attr->index; 1355 struct i2c_client *client = to_i2c_client(dev); 1356 struct w83795_data *data = i2c_get_clientdata(client); 1357 long tmp; 1358 1359 if (kstrtol(buf, 10, &tmp) < 0) 1360 return -EINVAL; 1361 1362 mutex_lock(&data->update_lock); 1363 data->temp[index][nr] = temp_to_reg(tmp, -128, 127); 1364 w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]); 1365 mutex_unlock(&data->update_lock); 1366 return count; 1367} 1368 1369 1370static ssize_t 1371show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf) 1372{ 1373 struct w83795_data *data = dev_get_drvdata(dev); 1374 int tmp; 1375 1376 if (data->enable_dts & 2) 1377 tmp = 5; 1378 else 1379 tmp = 6; 1380 1381 return sprintf(buf, "%d\n", tmp); 1382} 1383 1384static ssize_t 1385show_dts(struct device *dev, struct device_attribute *attr, char *buf) 1386{ 1387 struct sensor_device_attribute_2 *sensor_attr = 1388 to_sensor_dev_attr_2(attr); 1389 int index = sensor_attr->index; 1390 struct w83795_data *data = w83795_update_device(dev); 1391 long temp = temp_from_reg(data->dts[index]); 1392 1393 temp += (data->dts_read_vrlsb[index] >> 6) * 250; 1394 return sprintf(buf, "%ld\n", temp); 1395} 1396 1397static ssize_t 1398show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf) 1399{ 1400 struct sensor_device_attribute_2 *sensor_attr = 1401 to_sensor_dev_attr_2(attr); 1402 int nr = sensor_attr->nr; 1403 struct w83795_data *data = dev_get_drvdata(dev); 1404 long temp = temp_from_reg(data->dts_ext[nr]); 1405 1406 return sprintf(buf, "%ld\n", temp); 1407} 1408 1409static ssize_t 1410store_dts_ext(struct device *dev, struct device_attribute *attr, 1411 const char *buf, size_t count) 1412{ 1413 struct sensor_device_attribute_2 *sensor_attr = 1414 to_sensor_dev_attr_2(attr); 1415 int nr = sensor_attr->nr; 1416 struct i2c_client *client = to_i2c_client(dev); 1417 struct w83795_data *data = i2c_get_clientdata(client); 1418 long tmp; 1419 1420 if (kstrtol(buf, 10, &tmp) < 0) 1421 return -EINVAL; 1422 1423 mutex_lock(&data->update_lock); 1424 data->dts_ext[nr] = temp_to_reg(tmp, -128, 127); 1425 w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]); 1426 mutex_unlock(&data->update_lock); 1427 return count; 1428} 1429 1430 1431static ssize_t 1432show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf) 1433{ 1434 struct w83795_data *data = dev_get_drvdata(dev); 1435 struct sensor_device_attribute_2 *sensor_attr = 1436 to_sensor_dev_attr_2(attr); 1437 int index = sensor_attr->index; 1438 int tmp; 1439 1440 if (data->temp_mode & (1 << index)) 1441 tmp = 3; /* Thermal diode */ 1442 else 1443 tmp = 4; /* Thermistor */ 1444 1445 return sprintf(buf, "%d\n", tmp); 1446} 1447 1448/* Only for temp1-4 (temp5-6 can only be thermistor) */ 1449static ssize_t 1450store_temp_mode(struct device *dev, struct device_attribute *attr, 1451 const char *buf, size_t count) 1452{ 1453 struct i2c_client *client = to_i2c_client(dev); 1454 struct w83795_data *data = i2c_get_clientdata(client); 1455 struct sensor_device_attribute_2 *sensor_attr = 1456 to_sensor_dev_attr_2(attr); 1457 int index = sensor_attr->index; 1458 int reg_shift; 1459 unsigned long val; 1460 u8 tmp; 1461 1462 if (kstrtoul(buf, 10, &val) < 0) 1463 return -EINVAL; 1464 if ((val != 4) && (val != 3)) 1465 return -EINVAL; 1466 1467 mutex_lock(&data->update_lock); 1468 if (val == 3) { 1469 /* Thermal diode */ 1470 val = 0x01; 1471 data->temp_mode |= 1 << index; 1472 } else if (val == 4) { 1473 /* Thermistor */ 1474 val = 0x03; 1475 data->temp_mode &= ~(1 << index); 1476 } 1477 1478 reg_shift = 2 * index; 1479 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 1480 tmp &= ~(0x03 << reg_shift); 1481 tmp |= val << reg_shift; 1482 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp); 1483 1484 mutex_unlock(&data->update_lock); 1485 return count; 1486} 1487 1488 1489/* show/store VIN */ 1490static ssize_t 1491show_in(struct device *dev, struct device_attribute *attr, char *buf) 1492{ 1493 struct sensor_device_attribute_2 *sensor_attr = 1494 to_sensor_dev_attr_2(attr); 1495 int nr = sensor_attr->nr; 1496 int index = sensor_attr->index; 1497 struct w83795_data *data = w83795_update_device(dev); 1498 u16 val = data->in[index][nr]; 1499 u8 lsb_idx; 1500 1501 switch (nr) { 1502 case IN_READ: 1503 /* calculate this value again by sensors as sensors3.conf */ 1504 if ((index >= 17) && 1505 !((data->has_gain >> (index - 17)) & 1)) 1506 val *= 8; 1507 break; 1508 case IN_MAX: 1509 case IN_LOW: 1510 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1511 val <<= 2; 1512 val |= (data->in_lsb[lsb_idx][nr] >> 1513 IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]) & 0x03; 1514 if ((index >= 17) && 1515 !((data->has_gain >> (index - 17)) & 1)) 1516 val *= 8; 1517 break; 1518 } 1519 val = in_from_reg(index, val); 1520 1521 return sprintf(buf, "%d\n", val); 1522} 1523 1524static ssize_t 1525store_in(struct device *dev, struct device_attribute *attr, 1526 const char *buf, size_t count) 1527{ 1528 struct sensor_device_attribute_2 *sensor_attr = 1529 to_sensor_dev_attr_2(attr); 1530 int nr = sensor_attr->nr; 1531 int index = sensor_attr->index; 1532 struct i2c_client *client = to_i2c_client(dev); 1533 struct w83795_data *data = i2c_get_clientdata(client); 1534 unsigned long val; 1535 u8 tmp; 1536 u8 lsb_idx; 1537 1538 if (kstrtoul(buf, 10, &val) < 0) 1539 return -EINVAL; 1540 val = in_to_reg(index, val); 1541 1542 if ((index >= 17) && 1543 !((data->has_gain >> (index - 17)) & 1)) 1544 val /= 8; 1545 val = SENSORS_LIMIT(val, 0, 0x3FF); 1546 mutex_lock(&data->update_lock); 1547 1548 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1549 tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr)); 1550 tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]); 1551 tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]; 1552 w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp); 1553 data->in_lsb[lsb_idx][nr] = tmp; 1554 1555 tmp = (val >> 2) & 0xff; 1556 w83795_write(client, W83795_REG_IN[index][nr], tmp); 1557 data->in[index][nr] = tmp; 1558 1559 mutex_unlock(&data->update_lock); 1560 return count; 1561} 1562 1563 1564#ifdef CONFIG_SENSORS_W83795_FANCTRL 1565static ssize_t 1566show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf) 1567{ 1568 struct sensor_device_attribute_2 *sensor_attr = 1569 to_sensor_dev_attr_2(attr); 1570 int nr = sensor_attr->nr; 1571 struct w83795_data *data = w83795_update_pwm_config(dev); 1572 u16 val = data->setup_pwm[nr]; 1573 1574 switch (nr) { 1575 case SETUP_PWM_UPTIME: 1576 case SETUP_PWM_DOWNTIME: 1577 val = time_from_reg(val); 1578 break; 1579 } 1580 1581 return sprintf(buf, "%d\n", val); 1582} 1583 1584static ssize_t 1585store_sf_setup(struct device *dev, struct device_attribute *attr, 1586 const char *buf, size_t count) 1587{ 1588 struct sensor_device_attribute_2 *sensor_attr = 1589 to_sensor_dev_attr_2(attr); 1590 int nr = sensor_attr->nr; 1591 struct i2c_client *client = to_i2c_client(dev); 1592 struct w83795_data *data = i2c_get_clientdata(client); 1593 unsigned long val; 1594 1595 if (kstrtoul(buf, 10, &val) < 0) 1596 return -EINVAL; 1597 1598 switch (nr) { 1599 case SETUP_PWM_DEFAULT: 1600 val = SENSORS_LIMIT(val, 0, 0xff); 1601 break; 1602 case SETUP_PWM_UPTIME: 1603 case SETUP_PWM_DOWNTIME: 1604 val = time_to_reg(val); 1605 if (val == 0) 1606 return -EINVAL; 1607 break; 1608 } 1609 1610 mutex_lock(&data->update_lock); 1611 data->setup_pwm[nr] = val; 1612 w83795_write(client, W83795_REG_SETUP_PWM(nr), val); 1613 mutex_unlock(&data->update_lock); 1614 return count; 1615} 1616#endif 1617 1618 1619#define NOT_USED -1 1620 1621/* 1622 * Don't change the attribute order, _max, _min and _beep are accessed by index 1623 * somewhere else in the code 1624 */ 1625#define SENSOR_ATTR_IN(index) { \ 1626 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ 1627 IN_READ, index), \ 1628 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \ 1629 store_in, IN_MAX, index), \ 1630 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \ 1631 store_in, IN_LOW, index), \ 1632 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \ 1633 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \ 1634 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \ 1635 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1636 index + ((index > 14) ? 1 : 0)) } 1637 1638/* 1639 * Don't change the attribute order, _beep is accessed by index 1640 * somewhere else in the code 1641 */ 1642#define SENSOR_ATTR_FAN(index) { \ 1643 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ 1644 NULL, FAN_INPUT, index - 1), \ 1645 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \ 1646 show_fan, store_fan_min, FAN_MIN, index - 1), \ 1647 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \ 1648 NULL, ALARM_STATUS, index + 31), \ 1649 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \ 1650 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) } 1651 1652#define SENSOR_ATTR_PWM(index) { \ 1653 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \ 1654 store_pwm, PWM_OUTPUT, index - 1), \ 1655 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \ 1656 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \ 1657 SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \ 1658 show_pwm_mode, NULL, NOT_USED, index - 1), \ 1659 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \ 1660 show_pwm, store_pwm, PWM_FREQ, index - 1), \ 1661 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \ 1662 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \ 1663 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \ 1664 show_pwm, store_pwm, PWM_START, index - 1), \ 1665 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \ 1666 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \ 1667 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \ 1668 show_fanin, store_fanin, FANIN_TARGET, index - 1) } 1669 1670/* 1671 * Don't change the attribute order, _beep is accessed by index 1672 * somewhere else in the code 1673 */ 1674#define SENSOR_ATTR_DTS(index) { \ 1675 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \ 1676 show_dts_mode, NULL, NOT_USED, index - 7), \ 1677 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \ 1678 NULL, NOT_USED, index - 7), \ 1679 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \ 1680 store_dts_ext, DTS_CRIT, NOT_USED), \ 1681 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \ 1682 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \ 1683 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \ 1684 store_dts_ext, DTS_WARN, NOT_USED), \ 1685 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1686 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \ 1687 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1688 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \ 1689 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1690 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) } 1691 1692/* 1693 * Don't change the attribute order, _beep is accessed by index 1694 * somewhere else in the code 1695 */ 1696#define SENSOR_ATTR_TEMP(index) { \ 1697 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \ 1698 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ 1699 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \ 1700 NULL, TEMP_READ, index - 1), \ 1701 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \ 1702 store_temp, TEMP_CRIT, index - 1), \ 1703 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \ 1704 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \ 1705 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \ 1706 store_temp, TEMP_WARN, index - 1), \ 1707 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1708 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \ 1709 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1710 show_alarm_beep, NULL, ALARM_STATUS, \ 1711 index + (index > 4 ? 11 : 17)), \ 1712 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1713 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1714 index + (index > 4 ? 11 : 17)), \ 1715 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \ 1716 show_temp_pwm_enable, store_temp_pwm_enable, \ 1717 TEMP_PWM_ENABLE, index - 1), \ 1718 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \ 1719 show_temp_pwm_enable, store_temp_pwm_enable, \ 1720 TEMP_PWM_FAN_MAP, index - 1), \ 1721 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \ 1722 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \ 1723 SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO, \ 1724 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \ 1725 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO, \ 1726 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \ 1727 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \ 1728 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \ 1729 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \ 1730 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \ 1731 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \ 1732 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \ 1733 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \ 1734 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \ 1735 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \ 1736 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \ 1737 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \ 1738 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \ 1739 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \ 1740 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \ 1741 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \ 1742 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \ 1743 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\ 1744 show_sf4_temp, store_sf4_temp, 0, index - 1), \ 1745 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\ 1746 show_sf4_temp, store_sf4_temp, 1, index - 1), \ 1747 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\ 1748 show_sf4_temp, store_sf4_temp, 2, index - 1), \ 1749 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\ 1750 show_sf4_temp, store_sf4_temp, 3, index - 1), \ 1751 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\ 1752 show_sf4_temp, store_sf4_temp, 4, index - 1), \ 1753 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\ 1754 show_sf4_temp, store_sf4_temp, 5, index - 1), \ 1755 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\ 1756 show_sf4_temp, store_sf4_temp, 6, index - 1) } 1757 1758 1759static struct sensor_device_attribute_2 w83795_in[][5] = { 1760 SENSOR_ATTR_IN(0), 1761 SENSOR_ATTR_IN(1), 1762 SENSOR_ATTR_IN(2), 1763 SENSOR_ATTR_IN(3), 1764 SENSOR_ATTR_IN(4), 1765 SENSOR_ATTR_IN(5), 1766 SENSOR_ATTR_IN(6), 1767 SENSOR_ATTR_IN(7), 1768 SENSOR_ATTR_IN(8), 1769 SENSOR_ATTR_IN(9), 1770 SENSOR_ATTR_IN(10), 1771 SENSOR_ATTR_IN(11), 1772 SENSOR_ATTR_IN(12), 1773 SENSOR_ATTR_IN(13), 1774 SENSOR_ATTR_IN(14), 1775 SENSOR_ATTR_IN(15), 1776 SENSOR_ATTR_IN(16), 1777 SENSOR_ATTR_IN(17), 1778 SENSOR_ATTR_IN(18), 1779 SENSOR_ATTR_IN(19), 1780 SENSOR_ATTR_IN(20), 1781}; 1782 1783static const struct sensor_device_attribute_2 w83795_fan[][4] = { 1784 SENSOR_ATTR_FAN(1), 1785 SENSOR_ATTR_FAN(2), 1786 SENSOR_ATTR_FAN(3), 1787 SENSOR_ATTR_FAN(4), 1788 SENSOR_ATTR_FAN(5), 1789 SENSOR_ATTR_FAN(6), 1790 SENSOR_ATTR_FAN(7), 1791 SENSOR_ATTR_FAN(8), 1792 SENSOR_ATTR_FAN(9), 1793 SENSOR_ATTR_FAN(10), 1794 SENSOR_ATTR_FAN(11), 1795 SENSOR_ATTR_FAN(12), 1796 SENSOR_ATTR_FAN(13), 1797 SENSOR_ATTR_FAN(14), 1798}; 1799 1800static const struct sensor_device_attribute_2 w83795_temp[][28] = { 1801 SENSOR_ATTR_TEMP(1), 1802 SENSOR_ATTR_TEMP(2), 1803 SENSOR_ATTR_TEMP(3), 1804 SENSOR_ATTR_TEMP(4), 1805 SENSOR_ATTR_TEMP(5), 1806 SENSOR_ATTR_TEMP(6), 1807}; 1808 1809static const struct sensor_device_attribute_2 w83795_dts[][8] = { 1810 SENSOR_ATTR_DTS(7), 1811 SENSOR_ATTR_DTS(8), 1812 SENSOR_ATTR_DTS(9), 1813 SENSOR_ATTR_DTS(10), 1814 SENSOR_ATTR_DTS(11), 1815 SENSOR_ATTR_DTS(12), 1816 SENSOR_ATTR_DTS(13), 1817 SENSOR_ATTR_DTS(14), 1818}; 1819 1820static const struct sensor_device_attribute_2 w83795_pwm[][8] = { 1821 SENSOR_ATTR_PWM(1), 1822 SENSOR_ATTR_PWM(2), 1823 SENSOR_ATTR_PWM(3), 1824 SENSOR_ATTR_PWM(4), 1825 SENSOR_ATTR_PWM(5), 1826 SENSOR_ATTR_PWM(6), 1827 SENSOR_ATTR_PWM(7), 1828 SENSOR_ATTR_PWM(8), 1829}; 1830 1831static const struct sensor_device_attribute_2 w83795_tss[6] = { 1832 SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO, 1833 show_temp_src, store_temp_src, NOT_USED, 0), 1834 SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO, 1835 show_temp_src, store_temp_src, NOT_USED, 1), 1836 SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO, 1837 show_temp_src, store_temp_src, NOT_USED, 2), 1838 SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO, 1839 show_temp_src, store_temp_src, NOT_USED, 3), 1840 SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO, 1841 show_temp_src, store_temp_src, NOT_USED, 4), 1842 SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO, 1843 show_temp_src, store_temp_src, NOT_USED, 5), 1844}; 1845 1846static const struct sensor_device_attribute_2 sda_single_files[] = { 1847 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep, 1848 store_chassis_clear, ALARM_STATUS, 46), 1849#ifdef CONFIG_SENSORS_W83795_FANCTRL 1850 SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin, 1851 store_fanin, FANIN_TOL, NOT_USED), 1852 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup, 1853 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED), 1854 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup, 1855 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED), 1856 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup, 1857 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED), 1858#endif 1859}; 1860 1861static const struct sensor_device_attribute_2 sda_beep_files[] = { 1862 SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep, 1863 store_beep, BEEP_ENABLE, 46), 1864 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep, 1865 store_beep, BEEP_ENABLE, 47), 1866}; 1867 1868/* 1869 * Driver interface 1870 */ 1871 1872static void w83795_init_client(struct i2c_client *client) 1873{ 1874 struct w83795_data *data = i2c_get_clientdata(client); 1875 static const u16 clkin[4] = { /* in kHz */ 1876 14318, 24000, 33333, 48000 1877 }; 1878 u8 config; 1879 1880 if (reset) 1881 w83795_write(client, W83795_REG_CONFIG, 0x80); 1882 1883 /* Start monitoring if needed */ 1884 config = w83795_read(client, W83795_REG_CONFIG); 1885 if (!(config & W83795_REG_CONFIG_START)) { 1886 dev_info(&client->dev, "Enabling monitoring operations\n"); 1887 w83795_write(client, W83795_REG_CONFIG, 1888 config | W83795_REG_CONFIG_START); 1889 } 1890 1891 data->clkin = clkin[(config >> 3) & 0x3]; 1892 dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin); 1893} 1894 1895static int w83795_get_device_id(struct i2c_client *client) 1896{ 1897 int device_id; 1898 1899 device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID); 1900 1901 /* 1902 * Special case for rev. A chips; can't be checked first because later 1903 * revisions emulate this for compatibility 1904 */ 1905 if (device_id < 0 || (device_id & 0xf0) != 0x50) { 1906 int alt_id; 1907 1908 alt_id = i2c_smbus_read_byte_data(client, 1909 W83795_REG_DEVICEID_A); 1910 if (alt_id == 0x50) 1911 device_id = alt_id; 1912 } 1913 1914 return device_id; 1915} 1916 1917/* Return 0 if detection is successful, -ENODEV otherwise */ 1918static int w83795_detect(struct i2c_client *client, 1919 struct i2c_board_info *info) 1920{ 1921 int bank, vendor_id, device_id, expected, i2c_addr, config; 1922 struct i2c_adapter *adapter = client->adapter; 1923 unsigned short address = client->addr; 1924 const char *chip_name; 1925 1926 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1927 return -ENODEV; 1928 bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 1929 if (bank < 0 || (bank & 0x7c)) { 1930 dev_dbg(&adapter->dev, 1931 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1932 address, "bank"); 1933 return -ENODEV; 1934 } 1935 1936 /* Check Nuvoton vendor ID */ 1937 vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID); 1938 expected = bank & 0x80 ? 0x5c : 0xa3; 1939 if (vendor_id != expected) { 1940 dev_dbg(&adapter->dev, 1941 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1942 address, "vendor id"); 1943 return -ENODEV; 1944 } 1945 1946 /* Check device ID */ 1947 device_id = w83795_get_device_id(client) | 1948 (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8); 1949 if ((device_id >> 4) != 0x795) { 1950 dev_dbg(&adapter->dev, 1951 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1952 address, "device id\n"); 1953 return -ENODEV; 1954 } 1955 1956 /* 1957 * If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR 1958 * should match 1959 */ 1960 if ((bank & 0x07) == 0) { 1961 i2c_addr = i2c_smbus_read_byte_data(client, 1962 W83795_REG_I2C_ADDR); 1963 if ((i2c_addr & 0x7f) != address) { 1964 dev_dbg(&adapter->dev, 1965 "w83795: Detection failed at addr 0x%02hx, " 1966 "check %s\n", address, "i2c addr"); 1967 return -ENODEV; 1968 } 1969 } 1970 1971 /* 1972 * Check 795 chip type: 795G or 795ADG 1973 * Usually we don't write to chips during detection, but here we don't 1974 * quite have the choice; hopefully it's OK, we are about to return 1975 * success anyway 1976 */ 1977 if ((bank & 0x07) != 0) 1978 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, 1979 bank & ~0x07); 1980 config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG); 1981 if (config & W83795_REG_CONFIG_CONFIG48) 1982 chip_name = "w83795adg"; 1983 else 1984 chip_name = "w83795g"; 1985 1986 strlcpy(info->type, chip_name, I2C_NAME_SIZE); 1987 dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name, 1988 'A' + (device_id & 0xf), address); 1989 1990 return 0; 1991} 1992 1993#ifdef CONFIG_SENSORS_W83795_FANCTRL 1994#define NUM_PWM_ATTRIBUTES ARRAY_SIZE(w83795_pwm[0]) 1995#define NUM_TEMP_ATTRIBUTES ARRAY_SIZE(w83795_temp[0]) 1996#else 1997#define NUM_PWM_ATTRIBUTES 4 1998#define NUM_TEMP_ATTRIBUTES 8 1999#endif 2000 2001static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, 2002 const struct device_attribute *)) 2003{ 2004 struct w83795_data *data = dev_get_drvdata(dev); 2005 int err, i, j; 2006 2007 for (i = 0; i < ARRAY_SIZE(w83795_in); i++) { 2008 if (!(data->has_in & (1 << i))) 2009 continue; 2010 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) { 2011 if (j == 4 && !data->enable_beep) 2012 continue; 2013 err = fn(dev, &w83795_in[i][j].dev_attr); 2014 if (err) 2015 return err; 2016 } 2017 } 2018 2019 for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) { 2020 if (!(data->has_fan & (1 << i))) 2021 continue; 2022 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) { 2023 if (j == 3 && !data->enable_beep) 2024 continue; 2025 err = fn(dev, &w83795_fan[i][j].dev_attr); 2026 if (err) 2027 return err; 2028 } 2029 } 2030 2031 for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) { 2032 j = w83795_tss_useful(data, i); 2033 if (!j) 2034 continue; 2035 err = fn(dev, &w83795_tss[i].dev_attr); 2036 if (err) 2037 return err; 2038 } 2039 2040 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) { 2041 err = fn(dev, &sda_single_files[i].dev_attr); 2042 if (err) 2043 return err; 2044 } 2045 2046 if (data->enable_beep) { 2047 for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) { 2048 err = fn(dev, &sda_beep_files[i].dev_attr); 2049 if (err) 2050 return err; 2051 } 2052 } 2053 2054 for (i = 0; i < data->has_pwm; i++) { 2055 for (j = 0; j < NUM_PWM_ATTRIBUTES; j++) { 2056 err = fn(dev, &w83795_pwm[i][j].dev_attr); 2057 if (err) 2058 return err; 2059 } 2060 } 2061 2062 for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) { 2063 if (!(data->has_temp & (1 << i))) 2064 continue; 2065 for (j = 0; j < NUM_TEMP_ATTRIBUTES; j++) { 2066 if (j == 7 && !data->enable_beep) 2067 continue; 2068 err = fn(dev, &w83795_temp[i][j].dev_attr); 2069 if (err) 2070 return err; 2071 } 2072 } 2073 2074 if (data->enable_dts) { 2075 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) { 2076 if (!(data->has_dts & (1 << i))) 2077 continue; 2078 for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) { 2079 if (j == 7 && !data->enable_beep) 2080 continue; 2081 err = fn(dev, &w83795_dts[i][j].dev_attr); 2082 if (err) 2083 return err; 2084 } 2085 } 2086 } 2087 2088 return 0; 2089} 2090 2091/* We need a wrapper that fits in w83795_handle_files */ 2092static int device_remove_file_wrapper(struct device *dev, 2093 const struct device_attribute *attr) 2094{ 2095 device_remove_file(dev, attr); 2096 return 0; 2097} 2098 2099static void w83795_check_dynamic_in_limits(struct i2c_client *client) 2100{ 2101 struct w83795_data *data = i2c_get_clientdata(client); 2102 u8 vid_ctl; 2103 int i, err_max, err_min; 2104 2105 vid_ctl = w83795_read(client, W83795_REG_VID_CTRL); 2106 2107 /* Return immediately if VRM isn't configured */ 2108 if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07) 2109 return; 2110 2111 data->has_dyn_in = (vid_ctl >> 3) & 0x07; 2112 for (i = 0; i < 2; i++) { 2113 if (!(data->has_dyn_in & (1 << i))) 2114 continue; 2115 2116 /* Voltage limits in dynamic mode, switch to read-only */ 2117 err_max = sysfs_chmod_file(&client->dev.kobj, 2118 &w83795_in[i][2].dev_attr.attr, 2119 S_IRUGO); 2120 err_min = sysfs_chmod_file(&client->dev.kobj, 2121 &w83795_in[i][3].dev_attr.attr, 2122 S_IRUGO); 2123 if (err_max || err_min) 2124 dev_warn(&client->dev, "Failed to set in%d limits " 2125 "read-only (%d, %d)\n", i, err_max, err_min); 2126 else 2127 dev_info(&client->dev, "in%d limits set dynamically " 2128 "from VID\n", i); 2129 } 2130} 2131 2132/* Check pins that can be used for either temperature or voltage monitoring */ 2133static void w83795_apply_temp_config(struct w83795_data *data, u8 config, 2134 int temp_chan, int in_chan) 2135{ 2136 /* config is a 2-bit value */ 2137 switch (config) { 2138 case 0x2: /* Voltage monitoring */ 2139 data->has_in |= 1 << in_chan; 2140 break; 2141 case 0x1: /* Thermal diode */ 2142 if (temp_chan >= 4) 2143 break; 2144 data->temp_mode |= 1 << temp_chan; 2145 /* fall through */ 2146 case 0x3: /* Thermistor */ 2147 data->has_temp |= 1 << temp_chan; 2148 break; 2149 } 2150} 2151 2152static int w83795_probe(struct i2c_client *client, 2153 const struct i2c_device_id *id) 2154{ 2155 int i; 2156 u8 tmp; 2157 struct device *dev = &client->dev; 2158 struct w83795_data *data; 2159 int err; 2160 2161 data = devm_kzalloc(dev, sizeof(struct w83795_data), GFP_KERNEL); 2162 if (!data) 2163 return -ENOMEM; 2164 2165 i2c_set_clientdata(client, data); 2166 data->chip_type = id->driver_data; 2167 data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 2168 mutex_init(&data->update_lock); 2169 2170 /* Initialize the chip */ 2171 w83795_init_client(client); 2172 2173 /* Check which voltages and fans are present */ 2174 data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1) 2175 | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8); 2176 data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1) 2177 | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8); 2178 2179 /* Check which analog temperatures and extra voltages are present */ 2180 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1); 2181 if (tmp & 0x20) 2182 data->enable_dts = 1; 2183 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16); 2184 w83795_apply_temp_config(data, tmp & 0x3, 4, 15); 2185 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 2186 w83795_apply_temp_config(data, tmp >> 6, 3, 20); 2187 w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19); 2188 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18); 2189 w83795_apply_temp_config(data, tmp & 0x3, 0, 17); 2190 2191 /* Check DTS enable status */ 2192 if (data->enable_dts) { 2193 if (1 & w83795_read(client, W83795_REG_DTSC)) 2194 data->enable_dts |= 2; 2195 data->has_dts = w83795_read(client, W83795_REG_DTSE); 2196 } 2197 2198 /* Report PECI Tbase values */ 2199 if (data->enable_dts == 1) { 2200 for (i = 0; i < 8; i++) { 2201 if (!(data->has_dts & (1 << i))) 2202 continue; 2203 tmp = w83795_read(client, W83795_REG_PECI_TBASE(i)); 2204 dev_info(&client->dev, 2205 "PECI agent %d Tbase temperature: %u\n", 2206 i + 1, (unsigned int)tmp & 0x7f); 2207 } 2208 } 2209 2210 data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f; 2211 2212 /* pwm and smart fan */ 2213 if (data->chip_type == w83795g) 2214 data->has_pwm = 8; 2215 else 2216 data->has_pwm = 2; 2217 2218 /* Check if BEEP pin is available */ 2219 if (data->chip_type == w83795g) { 2220 /* The W83795G has a dedicated BEEP pin */ 2221 data->enable_beep = 1; 2222 } else { 2223 /* 2224 * The W83795ADG has a shared pin for OVT# and BEEP, so you 2225 * can't have both 2226 */ 2227 tmp = w83795_read(client, W83795_REG_OVT_CFG); 2228 if ((tmp & OVT_CFG_SEL) == 0) 2229 data->enable_beep = 1; 2230 } 2231 2232 err = w83795_handle_files(dev, device_create_file); 2233 if (err) 2234 goto exit_remove; 2235 2236 if (data->chip_type == w83795g) 2237 w83795_check_dynamic_in_limits(client); 2238 2239 data->hwmon_dev = hwmon_device_register(dev); 2240 if (IS_ERR(data->hwmon_dev)) { 2241 err = PTR_ERR(data->hwmon_dev); 2242 goto exit_remove; 2243 } 2244 2245 return 0; 2246 2247exit_remove: 2248 w83795_handle_files(dev, device_remove_file_wrapper); 2249 return err; 2250} 2251 2252static int w83795_remove(struct i2c_client *client) 2253{ 2254 struct w83795_data *data = i2c_get_clientdata(client); 2255 2256 hwmon_device_unregister(data->hwmon_dev); 2257 w83795_handle_files(&client->dev, device_remove_file_wrapper); 2258 2259 return 0; 2260} 2261 2262 2263static const struct i2c_device_id w83795_id[] = { 2264 { "w83795g", w83795g }, 2265 { "w83795adg", w83795adg }, 2266 { } 2267}; 2268MODULE_DEVICE_TABLE(i2c, w83795_id); 2269 2270static struct i2c_driver w83795_driver = { 2271 .driver = { 2272 .name = "w83795", 2273 }, 2274 .probe = w83795_probe, 2275 .remove = w83795_remove, 2276 .id_table = w83795_id, 2277 2278 .class = I2C_CLASS_HWMON, 2279 .detect = w83795_detect, 2280 .address_list = normal_i2c, 2281}; 2282 2283module_i2c_driver(w83795_driver); 2284 2285MODULE_AUTHOR("Wei Song, Jean Delvare <khali@linux-fr.org>"); 2286MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver"); 2287MODULE_LICENSE("GPL"); 2288