w83795.c revision 179c4fdb565dd2157e5dfe89318b74868e3b523d
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 39/* Addresses to scan */ 40static const unsigned short normal_i2c[] = { 41 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END 42}; 43 44 45static int reset; 46module_param(reset, bool, 0); 47MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended"); 48 49 50#define W83795_REG_BANKSEL 0x00 51#define W83795_REG_VENDORID 0xfd 52#define W83795_REG_CHIPID 0xfe 53#define W83795_REG_DEVICEID 0xfb 54#define W83795_REG_DEVICEID_A 0xff 55 56#define W83795_REG_I2C_ADDR 0xfc 57#define W83795_REG_CONFIG 0x01 58#define W83795_REG_CONFIG_CONFIG48 0x04 59#define W83795_REG_CONFIG_START 0x01 60 61/* Multi-Function Pin Ctrl Registers */ 62#define W83795_REG_VOLT_CTRL1 0x02 63#define W83795_REG_VOLT_CTRL2 0x03 64#define W83795_REG_TEMP_CTRL1 0x04 65#define W83795_REG_TEMP_CTRL2 0x05 66#define W83795_REG_FANIN_CTRL1 0x06 67#define W83795_REG_FANIN_CTRL2 0x07 68#define W83795_REG_VMIGB_CTRL 0x08 69 70#define TEMP_READ 0 71#define TEMP_CRIT 1 72#define TEMP_CRIT_HYST 2 73#define TEMP_WARN 3 74#define TEMP_WARN_HYST 4 75/* only crit and crit_hyst affect real-time alarm status 76 * current crit crit_hyst warn warn_hyst */ 77static const u16 W83795_REG_TEMP[][5] = { 78 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */ 79 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */ 80 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */ 81 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */ 82 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */ 83 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */ 84}; 85 86#define IN_READ 0 87#define IN_MAX 1 88#define IN_LOW 2 89static const u16 W83795_REG_IN[][3] = { 90 /* Current, HL, LL */ 91 {0x10, 0x70, 0x71}, /* VSEN1 */ 92 {0x11, 0x72, 0x73}, /* VSEN2 */ 93 {0x12, 0x74, 0x75}, /* VSEN3 */ 94 {0x13, 0x76, 0x77}, /* VSEN4 */ 95 {0x14, 0x78, 0x79}, /* VSEN5 */ 96 {0x15, 0x7a, 0x7b}, /* VSEN6 */ 97 {0x16, 0x7c, 0x7d}, /* VSEN7 */ 98 {0x17, 0x7e, 0x7f}, /* VSEN8 */ 99 {0x18, 0x80, 0x81}, /* VSEN9 */ 100 {0x19, 0x82, 0x83}, /* VSEN10 */ 101 {0x1A, 0x84, 0x85}, /* VSEN11 */ 102 {0x1B, 0x86, 0x87}, /* VTT */ 103 {0x1C, 0x88, 0x89}, /* 3VDD */ 104 {0x1D, 0x8a, 0x8b}, /* 3VSB */ 105 {0x1E, 0x8c, 0x8d}, /* VBAT */ 106 {0x1F, 0xa6, 0xa7}, /* VSEN12 */ 107 {0x20, 0xaa, 0xab}, /* VSEN13 */ 108 {0x21, 0x96, 0x97}, /* VSEN14 */ 109 {0x22, 0x9a, 0x9b}, /* VSEN15 */ 110 {0x23, 0x9e, 0x9f}, /* VSEN16 */ 111 {0x24, 0xa2, 0xa3}, /* VSEN17 */ 112}; 113#define W83795_REG_VRLSB 0x3C 114 115static const u8 W83795_REG_IN_HL_LSB[] = { 116 0x8e, /* VSEN1-4 */ 117 0x90, /* VSEN5-8 */ 118 0x92, /* VSEN9-11 */ 119 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */ 120 0xa8, /* VSEN12 */ 121 0xac, /* VSEN13 */ 122 0x98, /* VSEN14 */ 123 0x9c, /* VSEN15 */ 124 0xa0, /* VSEN16 */ 125 0xa4, /* VSEN17 */ 126}; 127 128#define IN_LSB_REG(index, type) \ 129 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \ 130 : (W83795_REG_IN_HL_LSB[(index)] + 1)) 131 132#define IN_LSB_SHIFT 0 133#define IN_LSB_IDX 1 134static const u8 IN_LSB_SHIFT_IDX[][2] = { 135 /* High/Low LSB shift, LSB No. */ 136 {0x00, 0x00}, /* VSEN1 */ 137 {0x02, 0x00}, /* VSEN2 */ 138 {0x04, 0x00}, /* VSEN3 */ 139 {0x06, 0x00}, /* VSEN4 */ 140 {0x00, 0x01}, /* VSEN5 */ 141 {0x02, 0x01}, /* VSEN6 */ 142 {0x04, 0x01}, /* VSEN7 */ 143 {0x06, 0x01}, /* VSEN8 */ 144 {0x00, 0x02}, /* VSEN9 */ 145 {0x02, 0x02}, /* VSEN10 */ 146 {0x04, 0x02}, /* VSEN11 */ 147 {0x00, 0x03}, /* VTT */ 148 {0x02, 0x03}, /* 3VDD */ 149 {0x04, 0x03}, /* 3VSB */ 150 {0x06, 0x03}, /* VBAT */ 151 {0x06, 0x04}, /* VSEN12 */ 152 {0x06, 0x05}, /* VSEN13 */ 153 {0x06, 0x06}, /* VSEN14 */ 154 {0x06, 0x07}, /* VSEN15 */ 155 {0x06, 0x08}, /* VSEN16 */ 156 {0x06, 0x09}, /* VSEN17 */ 157}; 158 159 160#define W83795_REG_FAN(index) (0x2E + (index)) 161#define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index)) 162#define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2) 163#define W83795_REG_FAN_MIN_LSB_SHIFT(index) \ 164 (((index) & 1) ? 4 : 0) 165 166#define W83795_REG_VID_CTRL 0x6A 167 168#define W83795_REG_ALARM_CTRL 0x40 169#define ALARM_CTRL_RTSACS (1 << 7) 170#define W83795_REG_ALARM(index) (0x41 + (index)) 171#define W83795_REG_CLR_CHASSIS 0x4D 172#define W83795_REG_BEEP(index) (0x50 + (index)) 173 174#define W83795_REG_OVT_CFG 0x58 175#define OVT_CFG_SEL (1 << 7) 176 177 178#define W83795_REG_FCMS1 0x201 179#define W83795_REG_FCMS2 0x208 180#define W83795_REG_TFMR(index) (0x202 + (index)) 181#define W83795_REG_FOMC 0x20F 182 183#define W83795_REG_TSS(index) (0x209 + (index)) 184 185#define TSS_MAP_RESERVED 0xff 186static const u8 tss_map[4][6] = { 187 { 0, 1, 2, 3, 4, 5}, 188 { 6, 7, 8, 9, 0, 1}, 189 {10, 11, 12, 13, 2, 3}, 190 { 4, 5, 4, 5, TSS_MAP_RESERVED, TSS_MAP_RESERVED}, 191}; 192 193#define PWM_OUTPUT 0 194#define PWM_FREQ 1 195#define PWM_START 2 196#define PWM_NONSTOP 3 197#define PWM_STOP_TIME 4 198#define W83795_REG_PWM(index, nr) (0x210 + (nr) * 8 + (index)) 199 200#define W83795_REG_FTSH(index) (0x240 + (index) * 2) 201#define W83795_REG_FTSL(index) (0x241 + (index) * 2) 202#define W83795_REG_TFTS 0x250 203 204#define TEMP_PWM_TTTI 0 205#define TEMP_PWM_CTFS 1 206#define TEMP_PWM_HCT 2 207#define TEMP_PWM_HOT 3 208#define W83795_REG_TTTI(index) (0x260 + (index)) 209#define W83795_REG_CTFS(index) (0x268 + (index)) 210#define W83795_REG_HT(index) (0x270 + (index)) 211 212#define SF4_TEMP 0 213#define SF4_PWM 1 214#define W83795_REG_SF4_TEMP(temp_num, index) \ 215 (0x280 + 0x10 * (temp_num) + (index)) 216#define W83795_REG_SF4_PWM(temp_num, index) \ 217 (0x288 + 0x10 * (temp_num) + (index)) 218 219#define W83795_REG_DTSC 0x301 220#define W83795_REG_DTSE 0x302 221#define W83795_REG_DTS(index) (0x26 + (index)) 222#define W83795_REG_PECI_TBASE(index) (0x320 + (index)) 223 224#define DTS_CRIT 0 225#define DTS_CRIT_HYST 1 226#define DTS_WARN 2 227#define DTS_WARN_HYST 3 228#define W83795_REG_DTS_EXT(index) (0xB2 + (index)) 229 230#define SETUP_PWM_DEFAULT 0 231#define SETUP_PWM_UPTIME 1 232#define SETUP_PWM_DOWNTIME 2 233#define W83795_REG_SETUP_PWM(index) (0x20C + (index)) 234 235static inline u16 in_from_reg(u8 index, u16 val) 236{ 237 /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */ 238 if (index >= 12 && index <= 14) 239 return val * 6; 240 else 241 return val * 2; 242} 243 244static inline u16 in_to_reg(u8 index, u16 val) 245{ 246 if (index >= 12 && index <= 14) 247 return val / 6; 248 else 249 return val / 2; 250} 251 252static inline unsigned long fan_from_reg(u16 val) 253{ 254 if ((val == 0xfff) || (val == 0)) 255 return 0; 256 return 1350000UL / val; 257} 258 259static inline u16 fan_to_reg(long rpm) 260{ 261 if (rpm <= 0) 262 return 0x0fff; 263 return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe); 264} 265 266static inline unsigned long time_from_reg(u8 reg) 267{ 268 return reg * 100; 269} 270 271static inline u8 time_to_reg(unsigned long val) 272{ 273 return SENSORS_LIMIT((val + 50) / 100, 0, 0xff); 274} 275 276static inline long temp_from_reg(s8 reg) 277{ 278 return reg * 1000; 279} 280 281static inline s8 temp_to_reg(long val, s8 min, s8 max) 282{ 283 return SENSORS_LIMIT(val / 1000, min, max); 284} 285 286static const u16 pwm_freq_cksel0[16] = { 287 1024, 512, 341, 256, 205, 171, 146, 128, 288 85, 64, 32, 16, 8, 4, 2, 1 289}; 290 291static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin) 292{ 293 unsigned long base_clock; 294 295 if (reg & 0x80) { 296 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 297 return base_clock / ((reg & 0x7f) + 1); 298 } else 299 return pwm_freq_cksel0[reg & 0x0f]; 300} 301 302static u8 pwm_freq_to_reg(unsigned long val, u16 clkin) 303{ 304 unsigned long base_clock; 305 u8 reg0, reg1; 306 unsigned long best0, best1; 307 308 /* Best fit for cksel = 0 */ 309 for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) { 310 if (val > (pwm_freq_cksel0[reg0] + 311 pwm_freq_cksel0[reg0 + 1]) / 2) 312 break; 313 } 314 if (val < 375) /* cksel = 1 can't beat this */ 315 return reg0; 316 best0 = pwm_freq_cksel0[reg0]; 317 318 /* Best fit for cksel = 1 */ 319 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 320 reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128); 321 best1 = base_clock / reg1; 322 reg1 = 0x80 | (reg1 - 1); 323 324 /* Choose the closest one */ 325 if (abs(val - best0) > abs(val - best1)) 326 return reg1; 327 else 328 return reg0; 329} 330 331enum chip_types {w83795g, w83795adg}; 332 333struct w83795_data { 334 struct device *hwmon_dev; 335 struct mutex update_lock; 336 unsigned long last_updated; /* In jiffies */ 337 enum chip_types chip_type; 338 339 u8 bank; 340 341 u32 has_in; /* Enable monitor VIN or not */ 342 u8 has_dyn_in; /* Only in2-0 can have this */ 343 u16 in[21][3]; /* Register value, read/high/low */ 344 u8 in_lsb[10][3]; /* LSB Register value, high/low */ 345 u8 has_gain; /* has gain: in17-20 * 8 */ 346 347 u16 has_fan; /* Enable fan14-1 or not */ 348 u16 fan[14]; /* Register value combine */ 349 u16 fan_min[14]; /* Register value combine */ 350 351 u8 has_temp; /* Enable monitor temp6-1 or not */ 352 s8 temp[6][5]; /* current, crit, crit_hyst, warn, warn_hyst */ 353 u8 temp_read_vrlsb[6]; 354 u8 temp_mode; /* Bit vector, 0 = TR, 1 = TD */ 355 u8 temp_src[3]; /* Register value */ 356 357 u8 enable_dts; /* Enable PECI and SB-TSI, 358 * bit 0: =1 enable, =0 disable, 359 * bit 1: =1 AMD SB-TSI, =0 Intel PECI */ 360 u8 has_dts; /* Enable monitor DTS temp */ 361 s8 dts[8]; /* Register value */ 362 u8 dts_read_vrlsb[8]; /* Register value */ 363 s8 dts_ext[4]; /* Register value */ 364 365 u8 has_pwm; /* 795g supports 8 pwm, 795adg only supports 2, 366 * no config register, only affected by chip 367 * type */ 368 u8 pwm[8][5]; /* Register value, output, freq, start, 369 * non stop, stop time */ 370 u16 clkin; /* CLKIN frequency in kHz */ 371 u8 pwm_fcms[2]; /* Register value */ 372 u8 pwm_tfmr[6]; /* Register value */ 373 u8 pwm_fomc; /* Register value */ 374 375 u16 target_speed[8]; /* Register value, target speed for speed 376 * cruise */ 377 u8 tol_speed; /* tolerance of target speed */ 378 u8 pwm_temp[6][4]; /* TTTI, CTFS, HCT, HOT */ 379 u8 sf4_reg[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */ 380 381 u8 setup_pwm[3]; /* Register value */ 382 383 u8 alarms[6]; /* Register value */ 384 u8 enable_beep; 385 u8 beeps[6]; /* Register value */ 386 387 char valid; 388 char valid_limits; 389 char valid_pwm_config; 390}; 391 392/* 393 * Hardware access 394 * We assume that nobdody can change the bank outside the driver. 395 */ 396 397/* Must be called with data->update_lock held, except during initialization */ 398static int w83795_set_bank(struct i2c_client *client, u8 bank) 399{ 400 struct w83795_data *data = i2c_get_clientdata(client); 401 int err; 402 403 /* If the same bank is already set, nothing to do */ 404 if ((data->bank & 0x07) == bank) 405 return 0; 406 407 /* Change to new bank, preserve all other bits */ 408 bank |= data->bank & ~0x07; 409 err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank); 410 if (err < 0) { 411 dev_err(&client->dev, 412 "Failed to set bank to %d, err %d\n", 413 (int)bank, err); 414 return err; 415 } 416 data->bank = bank; 417 418 return 0; 419} 420 421/* Must be called with data->update_lock held, except during initialization */ 422static u8 w83795_read(struct i2c_client *client, u16 reg) 423{ 424 int err; 425 426 err = w83795_set_bank(client, reg >> 8); 427 if (err < 0) 428 return 0x00; /* Arbitrary */ 429 430 err = i2c_smbus_read_byte_data(client, reg & 0xff); 431 if (err < 0) { 432 dev_err(&client->dev, 433 "Failed to read from register 0x%03x, err %d\n", 434 (int)reg, err); 435 return 0x00; /* Arbitrary */ 436 } 437 return err; 438} 439 440/* Must be called with data->update_lock held, except during initialization */ 441static int w83795_write(struct i2c_client *client, u16 reg, u8 value) 442{ 443 int err; 444 445 err = w83795_set_bank(client, reg >> 8); 446 if (err < 0) 447 return err; 448 449 err = i2c_smbus_write_byte_data(client, reg & 0xff, value); 450 if (err < 0) 451 dev_err(&client->dev, 452 "Failed to write to register 0x%03x, err %d\n", 453 (int)reg, err); 454 return err; 455} 456 457static void w83795_update_limits(struct i2c_client *client) 458{ 459 struct w83795_data *data = i2c_get_clientdata(client); 460 int i, limit; 461 u8 lsb; 462 463 /* Read the voltage limits */ 464 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 465 if (!(data->has_in & (1 << i))) 466 continue; 467 data->in[i][IN_MAX] = 468 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 469 data->in[i][IN_LOW] = 470 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 471 } 472 for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) { 473 if ((i == 2 && data->chip_type == w83795adg) || 474 (i >= 4 && !(data->has_in & (1 << (i + 11))))) 475 continue; 476 data->in_lsb[i][IN_MAX] = 477 w83795_read(client, IN_LSB_REG(i, IN_MAX)); 478 data->in_lsb[i][IN_LOW] = 479 w83795_read(client, IN_LSB_REG(i, IN_LOW)); 480 } 481 482 /* Read the fan limits */ 483 lsb = 0; /* Silent false gcc warning */ 484 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 485 /* Each register contains LSB for 2 fans, but we want to 486 * read it only once to save time */ 487 if ((i & 1) == 0 && (data->has_fan & (3 << i))) 488 lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i)); 489 490 if (!(data->has_fan & (1 << i))) 491 continue; 492 data->fan_min[i] = 493 w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4; 494 data->fan_min[i] |= 495 (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F; 496 } 497 498 /* Read the temperature limits */ 499 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 500 if (!(data->has_temp & (1 << i))) 501 continue; 502 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++) 503 data->temp[i][limit] = 504 w83795_read(client, W83795_REG_TEMP[i][limit]); 505 } 506 507 /* Read the DTS limits */ 508 if (data->enable_dts) { 509 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++) 510 data->dts_ext[limit] = 511 w83795_read(client, W83795_REG_DTS_EXT(limit)); 512 } 513 514 /* Read beep settings */ 515 if (data->enable_beep) { 516 for (i = 0; i < ARRAY_SIZE(data->beeps); i++) 517 data->beeps[i] = 518 w83795_read(client, W83795_REG_BEEP(i)); 519 } 520 521 data->valid_limits = 1; 522} 523 524static struct w83795_data *w83795_update_pwm_config(struct device *dev) 525{ 526 struct i2c_client *client = to_i2c_client(dev); 527 struct w83795_data *data = i2c_get_clientdata(client); 528 int i, tmp; 529 530 mutex_lock(&data->update_lock); 531 532 if (data->valid_pwm_config) 533 goto END; 534 535 /* Read temperature source selection */ 536 for (i = 0; i < ARRAY_SIZE(data->temp_src); i++) 537 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i)); 538 539 /* Read automatic fan speed control settings */ 540 data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1); 541 data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2); 542 for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++) 543 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i)); 544 data->pwm_fomc = w83795_read(client, W83795_REG_FOMC); 545 for (i = 0; i < data->has_pwm; i++) { 546 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++) 547 data->pwm[i][tmp] = 548 w83795_read(client, W83795_REG_PWM(i, tmp)); 549 } 550 for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) { 551 data->target_speed[i] = 552 w83795_read(client, W83795_REG_FTSH(i)) << 4; 553 data->target_speed[i] |= 554 w83795_read(client, W83795_REG_FTSL(i)) >> 4; 555 } 556 data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f; 557 558 for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) { 559 data->pwm_temp[i][TEMP_PWM_TTTI] = 560 w83795_read(client, W83795_REG_TTTI(i)) & 0x7f; 561 data->pwm_temp[i][TEMP_PWM_CTFS] = 562 w83795_read(client, W83795_REG_CTFS(i)); 563 tmp = w83795_read(client, W83795_REG_HT(i)); 564 data->pwm_temp[i][TEMP_PWM_HCT] = tmp >> 4; 565 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f; 566 } 567 568 /* Read SmartFanIV trip points */ 569 for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) { 570 for (tmp = 0; tmp < 7; tmp++) { 571 data->sf4_reg[i][SF4_TEMP][tmp] = 572 w83795_read(client, 573 W83795_REG_SF4_TEMP(i, tmp)); 574 data->sf4_reg[i][SF4_PWM][tmp] = 575 w83795_read(client, W83795_REG_SF4_PWM(i, tmp)); 576 } 577 } 578 579 /* Read setup PWM */ 580 for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++) 581 data->setup_pwm[i] = 582 w83795_read(client, W83795_REG_SETUP_PWM(i)); 583 584 data->valid_pwm_config = 1; 585 586END: 587 mutex_unlock(&data->update_lock); 588 return data; 589} 590 591static struct w83795_data *w83795_update_device(struct device *dev) 592{ 593 struct i2c_client *client = to_i2c_client(dev); 594 struct w83795_data *data = i2c_get_clientdata(client); 595 u16 tmp; 596 u8 intrusion; 597 int i; 598 599 mutex_lock(&data->update_lock); 600 601 if (!data->valid_limits) 602 w83795_update_limits(client); 603 604 if (!(time_after(jiffies, data->last_updated + HZ * 2) 605 || !data->valid)) 606 goto END; 607 608 /* Update the voltages value */ 609 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 610 if (!(data->has_in & (1 << i))) 611 continue; 612 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2; 613 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6; 614 data->in[i][IN_READ] = tmp; 615 } 616 617 /* in0-2 can have dynamic limits (W83795G only) */ 618 if (data->has_dyn_in) { 619 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX)); 620 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW)); 621 622 for (i = 0; i < 3; i++) { 623 if (!(data->has_dyn_in & (1 << i))) 624 continue; 625 data->in[i][IN_MAX] = 626 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 627 data->in[i][IN_LOW] = 628 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 629 data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03; 630 data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03; 631 } 632 } 633 634 /* Update fan */ 635 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 636 if (!(data->has_fan & (1 << i))) 637 continue; 638 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4; 639 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4; 640 } 641 642 /* Update temperature */ 643 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 644 data->temp[i][TEMP_READ] = 645 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]); 646 data->temp_read_vrlsb[i] = 647 w83795_read(client, W83795_REG_VRLSB); 648 } 649 650 /* Update dts temperature */ 651 if (data->enable_dts) { 652 for (i = 0; i < ARRAY_SIZE(data->dts); i++) { 653 if (!(data->has_dts & (1 << i))) 654 continue; 655 data->dts[i] = 656 w83795_read(client, W83795_REG_DTS(i)); 657 data->dts_read_vrlsb[i] = 658 w83795_read(client, W83795_REG_VRLSB); 659 } 660 } 661 662 /* Update pwm output */ 663 for (i = 0; i < data->has_pwm; i++) { 664 data->pwm[i][PWM_OUTPUT] = 665 w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT)); 666 } 667 668 /* Update intrusion and alarms 669 * It is important to read intrusion first, because reading from 670 * register SMI STS6 clears the interrupt status temporarily. */ 671 tmp = w83795_read(client, W83795_REG_ALARM_CTRL); 672 /* Switch to interrupt status for intrusion if needed */ 673 if (tmp & ALARM_CTRL_RTSACS) 674 w83795_write(client, W83795_REG_ALARM_CTRL, 675 tmp & ~ALARM_CTRL_RTSACS); 676 intrusion = w83795_read(client, W83795_REG_ALARM(5)) & (1 << 6); 677 /* Switch to real-time alarms */ 678 w83795_write(client, W83795_REG_ALARM_CTRL, tmp | ALARM_CTRL_RTSACS); 679 for (i = 0; i < ARRAY_SIZE(data->alarms); i++) 680 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i)); 681 data->alarms[5] |= intrusion; 682 /* Restore original configuration if needed */ 683 if (!(tmp & ALARM_CTRL_RTSACS)) 684 w83795_write(client, W83795_REG_ALARM_CTRL, 685 tmp & ~ALARM_CTRL_RTSACS); 686 687 data->last_updated = jiffies; 688 data->valid = 1; 689 690END: 691 mutex_unlock(&data->update_lock); 692 return data; 693} 694 695/* 696 * Sysfs attributes 697 */ 698 699#define ALARM_STATUS 0 700#define BEEP_ENABLE 1 701static ssize_t 702show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf) 703{ 704 struct w83795_data *data = w83795_update_device(dev); 705 struct sensor_device_attribute_2 *sensor_attr = 706 to_sensor_dev_attr_2(attr); 707 int nr = sensor_attr->nr; 708 int index = sensor_attr->index >> 3; 709 int bit = sensor_attr->index & 0x07; 710 u8 val; 711 712 if (nr == ALARM_STATUS) 713 val = (data->alarms[index] >> bit) & 1; 714 else /* BEEP_ENABLE */ 715 val = (data->beeps[index] >> bit) & 1; 716 717 return sprintf(buf, "%u\n", val); 718} 719 720static ssize_t 721store_beep(struct device *dev, struct device_attribute *attr, 722 const char *buf, size_t count) 723{ 724 struct i2c_client *client = to_i2c_client(dev); 725 struct w83795_data *data = i2c_get_clientdata(client); 726 struct sensor_device_attribute_2 *sensor_attr = 727 to_sensor_dev_attr_2(attr); 728 int index = sensor_attr->index >> 3; 729 int shift = sensor_attr->index & 0x07; 730 u8 beep_bit = 1 << shift; 731 unsigned long val; 732 733 if (kstrtoul(buf, 10, &val) < 0) 734 return -EINVAL; 735 if (val != 0 && val != 1) 736 return -EINVAL; 737 738 mutex_lock(&data->update_lock); 739 data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index)); 740 data->beeps[index] &= ~beep_bit; 741 data->beeps[index] |= val << shift; 742 w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]); 743 mutex_unlock(&data->update_lock); 744 745 return count; 746} 747 748/* Write 0 to clear chassis alarm */ 749static ssize_t 750store_chassis_clear(struct device *dev, 751 struct device_attribute *attr, const char *buf, 752 size_t count) 753{ 754 struct i2c_client *client = to_i2c_client(dev); 755 struct w83795_data *data = i2c_get_clientdata(client); 756 unsigned long val; 757 758 if (kstrtoul(buf, 10, &val) < 0 || val != 0) 759 return -EINVAL; 760 761 mutex_lock(&data->update_lock); 762 val = w83795_read(client, W83795_REG_CLR_CHASSIS); 763 val |= 0x80; 764 w83795_write(client, W83795_REG_CLR_CHASSIS, val); 765 766 /* Clear status and force cache refresh */ 767 w83795_read(client, W83795_REG_ALARM(5)); 768 data->valid = 0; 769 mutex_unlock(&data->update_lock); 770 return count; 771} 772 773#define FAN_INPUT 0 774#define FAN_MIN 1 775static ssize_t 776show_fan(struct device *dev, struct device_attribute *attr, char *buf) 777{ 778 struct sensor_device_attribute_2 *sensor_attr = 779 to_sensor_dev_attr_2(attr); 780 int nr = sensor_attr->nr; 781 int index = sensor_attr->index; 782 struct w83795_data *data = w83795_update_device(dev); 783 u16 val; 784 785 if (nr == FAN_INPUT) 786 val = data->fan[index] & 0x0fff; 787 else 788 val = data->fan_min[index] & 0x0fff; 789 790 return sprintf(buf, "%lu\n", fan_from_reg(val)); 791} 792 793static ssize_t 794store_fan_min(struct device *dev, struct device_attribute *attr, 795 const char *buf, size_t count) 796{ 797 struct sensor_device_attribute_2 *sensor_attr = 798 to_sensor_dev_attr_2(attr); 799 int index = sensor_attr->index; 800 struct i2c_client *client = to_i2c_client(dev); 801 struct w83795_data *data = i2c_get_clientdata(client); 802 unsigned long val; 803 804 if (kstrtoul(buf, 10, &val)) 805 return -EINVAL; 806 val = fan_to_reg(val); 807 808 mutex_lock(&data->update_lock); 809 data->fan_min[index] = val; 810 w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff); 811 val &= 0x0f; 812 if (index & 1) { 813 val <<= 4; 814 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 815 & 0x0f; 816 } else { 817 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 818 & 0xf0; 819 } 820 w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff); 821 mutex_unlock(&data->update_lock); 822 823 return count; 824} 825 826static ssize_t 827show_pwm(struct device *dev, struct device_attribute *attr, char *buf) 828{ 829 struct w83795_data *data; 830 struct sensor_device_attribute_2 *sensor_attr = 831 to_sensor_dev_attr_2(attr); 832 int nr = sensor_attr->nr; 833 int index = sensor_attr->index; 834 unsigned int val; 835 836 data = nr == PWM_OUTPUT ? w83795_update_device(dev) 837 : w83795_update_pwm_config(dev); 838 839 switch (nr) { 840 case PWM_STOP_TIME: 841 val = time_from_reg(data->pwm[index][nr]); 842 break; 843 case PWM_FREQ: 844 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin); 845 break; 846 default: 847 val = data->pwm[index][nr]; 848 break; 849 } 850 851 return sprintf(buf, "%u\n", val); 852} 853 854static ssize_t 855store_pwm(struct device *dev, struct device_attribute *attr, 856 const char *buf, size_t count) 857{ 858 struct i2c_client *client = to_i2c_client(dev); 859 struct w83795_data *data = i2c_get_clientdata(client); 860 struct sensor_device_attribute_2 *sensor_attr = 861 to_sensor_dev_attr_2(attr); 862 int nr = sensor_attr->nr; 863 int index = sensor_attr->index; 864 unsigned long val; 865 866 if (kstrtoul(buf, 10, &val) < 0) 867 return -EINVAL; 868 869 mutex_lock(&data->update_lock); 870 switch (nr) { 871 case PWM_STOP_TIME: 872 val = time_to_reg(val); 873 break; 874 case PWM_FREQ: 875 val = pwm_freq_to_reg(val, data->clkin); 876 break; 877 default: 878 val = SENSORS_LIMIT(val, 0, 0xff); 879 break; 880 } 881 w83795_write(client, W83795_REG_PWM(index, nr), val); 882 data->pwm[index][nr] = val; 883 mutex_unlock(&data->update_lock); 884 return count; 885} 886 887static ssize_t 888show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf) 889{ 890 struct sensor_device_attribute_2 *sensor_attr = 891 to_sensor_dev_attr_2(attr); 892 struct w83795_data *data = w83795_update_pwm_config(dev); 893 int index = sensor_attr->index; 894 u8 tmp; 895 896 /* Speed cruise mode */ 897 if (data->pwm_fcms[0] & (1 << index)) { 898 tmp = 2; 899 goto out; 900 } 901 /* Thermal cruise or SmartFan IV mode */ 902 for (tmp = 0; tmp < 6; tmp++) { 903 if (data->pwm_tfmr[tmp] & (1 << index)) { 904 tmp = 3; 905 goto out; 906 } 907 } 908 /* Manual mode */ 909 tmp = 1; 910 911out: 912 return sprintf(buf, "%u\n", tmp); 913} 914 915static ssize_t 916store_pwm_enable(struct device *dev, struct device_attribute *attr, 917 const char *buf, size_t count) 918{ 919 struct i2c_client *client = to_i2c_client(dev); 920 struct w83795_data *data = w83795_update_pwm_config(dev); 921 struct sensor_device_attribute_2 *sensor_attr = 922 to_sensor_dev_attr_2(attr); 923 int index = sensor_attr->index; 924 unsigned long val; 925 int i; 926 927 if (kstrtoul(buf, 10, &val) < 0) 928 return -EINVAL; 929 if (val < 1 || val > 2) 930 return -EINVAL; 931 932 mutex_lock(&data->update_lock); 933 switch (val) { 934 case 1: 935 /* Clear speed cruise mode bits */ 936 data->pwm_fcms[0] &= ~(1 << index); 937 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 938 /* Clear thermal cruise mode bits */ 939 for (i = 0; i < 6; i++) { 940 data->pwm_tfmr[i] &= ~(1 << index); 941 w83795_write(client, W83795_REG_TFMR(i), 942 data->pwm_tfmr[i]); 943 } 944 break; 945 case 2: 946 data->pwm_fcms[0] |= (1 << index); 947 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 948 break; 949 } 950 mutex_unlock(&data->update_lock); 951 return count; 952} 953 954static ssize_t 955show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf) 956{ 957 struct w83795_data *data = w83795_update_pwm_config(dev); 958 int index = to_sensor_dev_attr_2(attr)->index; 959 unsigned int mode; 960 961 if (data->pwm_fomc & (1 << index)) 962 mode = 0; /* DC */ 963 else 964 mode = 1; /* PWM */ 965 966 return sprintf(buf, "%u\n", mode); 967} 968 969/* 970 * Check whether a given temperature source can ever be useful. 971 * Returns the number of selectable temperature channels which are 972 * enabled. 973 */ 974static int w83795_tss_useful(const struct w83795_data *data, int tsrc) 975{ 976 int useful = 0, i; 977 978 for (i = 0; i < 4; i++) { 979 if (tss_map[i][tsrc] == TSS_MAP_RESERVED) 980 continue; 981 if (tss_map[i][tsrc] < 6) /* Analog */ 982 useful += (data->has_temp >> tss_map[i][tsrc]) & 1; 983 else /* Digital */ 984 useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1; 985 } 986 987 return useful; 988} 989 990static ssize_t 991show_temp_src(struct device *dev, struct device_attribute *attr, char *buf) 992{ 993 struct sensor_device_attribute_2 *sensor_attr = 994 to_sensor_dev_attr_2(attr); 995 struct w83795_data *data = w83795_update_pwm_config(dev); 996 int index = sensor_attr->index; 997 u8 tmp = data->temp_src[index / 2]; 998 999 if (index & 1) 1000 tmp >>= 4; /* Pick high nibble */ 1001 else 1002 tmp &= 0x0f; /* Pick low nibble */ 1003 1004 /* Look-up the actual temperature channel number */ 1005 if (tmp >= 4 || tss_map[tmp][index] == TSS_MAP_RESERVED) 1006 return -EINVAL; /* Shouldn't happen */ 1007 1008 return sprintf(buf, "%u\n", (unsigned int)tss_map[tmp][index] + 1); 1009} 1010 1011static ssize_t 1012store_temp_src(struct device *dev, struct device_attribute *attr, 1013 const char *buf, size_t count) 1014{ 1015 struct i2c_client *client = to_i2c_client(dev); 1016 struct w83795_data *data = w83795_update_pwm_config(dev); 1017 struct sensor_device_attribute_2 *sensor_attr = 1018 to_sensor_dev_attr_2(attr); 1019 int index = sensor_attr->index; 1020 int tmp; 1021 unsigned long channel; 1022 u8 val = index / 2; 1023 1024 if (kstrtoul(buf, 10, &channel) < 0 || 1025 channel < 1 || channel > 14) 1026 return -EINVAL; 1027 1028 /* Check if request can be fulfilled */ 1029 for (tmp = 0; tmp < 4; tmp++) { 1030 if (tss_map[tmp][index] == channel - 1) 1031 break; 1032 } 1033 if (tmp == 4) /* No match */ 1034 return -EINVAL; 1035 1036 mutex_lock(&data->update_lock); 1037 if (index & 1) { 1038 tmp <<= 4; 1039 data->temp_src[val] &= 0x0f; 1040 } else { 1041 data->temp_src[val] &= 0xf0; 1042 } 1043 data->temp_src[val] |= tmp; 1044 w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]); 1045 mutex_unlock(&data->update_lock); 1046 1047 return count; 1048} 1049 1050#define TEMP_PWM_ENABLE 0 1051#define TEMP_PWM_FAN_MAP 1 1052static ssize_t 1053show_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 1054 char *buf) 1055{ 1056 struct w83795_data *data = w83795_update_pwm_config(dev); 1057 struct sensor_device_attribute_2 *sensor_attr = 1058 to_sensor_dev_attr_2(attr); 1059 int nr = sensor_attr->nr; 1060 int index = sensor_attr->index; 1061 u8 tmp = 0xff; 1062 1063 switch (nr) { 1064 case TEMP_PWM_ENABLE: 1065 tmp = (data->pwm_fcms[1] >> index) & 1; 1066 if (tmp) 1067 tmp = 4; 1068 else 1069 tmp = 3; 1070 break; 1071 case TEMP_PWM_FAN_MAP: 1072 tmp = data->pwm_tfmr[index]; 1073 break; 1074 } 1075 1076 return sprintf(buf, "%u\n", tmp); 1077} 1078 1079static ssize_t 1080store_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 1081 const char *buf, size_t count) 1082{ 1083 struct i2c_client *client = to_i2c_client(dev); 1084 struct w83795_data *data = w83795_update_pwm_config(dev); 1085 struct sensor_device_attribute_2 *sensor_attr = 1086 to_sensor_dev_attr_2(attr); 1087 int nr = sensor_attr->nr; 1088 int index = sensor_attr->index; 1089 unsigned long tmp; 1090 1091 if (kstrtoul(buf, 10, &tmp) < 0) 1092 return -EINVAL; 1093 1094 switch (nr) { 1095 case TEMP_PWM_ENABLE: 1096 if (tmp != 3 && tmp != 4) 1097 return -EINVAL; 1098 tmp -= 3; 1099 mutex_lock(&data->update_lock); 1100 data->pwm_fcms[1] &= ~(1 << index); 1101 data->pwm_fcms[1] |= tmp << index; 1102 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]); 1103 mutex_unlock(&data->update_lock); 1104 break; 1105 case TEMP_PWM_FAN_MAP: 1106 mutex_lock(&data->update_lock); 1107 tmp = SENSORS_LIMIT(tmp, 0, 0xff); 1108 w83795_write(client, W83795_REG_TFMR(index), tmp); 1109 data->pwm_tfmr[index] = tmp; 1110 mutex_unlock(&data->update_lock); 1111 break; 1112 } 1113 return count; 1114} 1115 1116#define FANIN_TARGET 0 1117#define FANIN_TOL 1 1118static ssize_t 1119show_fanin(struct device *dev, struct device_attribute *attr, char *buf) 1120{ 1121 struct w83795_data *data = w83795_update_pwm_config(dev); 1122 struct sensor_device_attribute_2 *sensor_attr = 1123 to_sensor_dev_attr_2(attr); 1124 int nr = sensor_attr->nr; 1125 int index = sensor_attr->index; 1126 u16 tmp = 0; 1127 1128 switch (nr) { 1129 case FANIN_TARGET: 1130 tmp = fan_from_reg(data->target_speed[index]); 1131 break; 1132 case FANIN_TOL: 1133 tmp = data->tol_speed; 1134 break; 1135 } 1136 1137 return sprintf(buf, "%u\n", tmp); 1138} 1139 1140static ssize_t 1141store_fanin(struct device *dev, struct device_attribute *attr, 1142 const char *buf, size_t count) 1143{ 1144 struct i2c_client *client = to_i2c_client(dev); 1145 struct w83795_data *data = i2c_get_clientdata(client); 1146 struct sensor_device_attribute_2 *sensor_attr = 1147 to_sensor_dev_attr_2(attr); 1148 int nr = sensor_attr->nr; 1149 int index = sensor_attr->index; 1150 unsigned long val; 1151 1152 if (kstrtoul(buf, 10, &val) < 0) 1153 return -EINVAL; 1154 1155 mutex_lock(&data->update_lock); 1156 switch (nr) { 1157 case FANIN_TARGET: 1158 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff)); 1159 w83795_write(client, W83795_REG_FTSH(index), val >> 4); 1160 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0); 1161 data->target_speed[index] = val; 1162 break; 1163 case FANIN_TOL: 1164 val = SENSORS_LIMIT(val, 0, 0x3f); 1165 w83795_write(client, W83795_REG_TFTS, val); 1166 data->tol_speed = val; 1167 break; 1168 } 1169 mutex_unlock(&data->update_lock); 1170 1171 return count; 1172} 1173 1174 1175static ssize_t 1176show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1177{ 1178 struct w83795_data *data = w83795_update_pwm_config(dev); 1179 struct sensor_device_attribute_2 *sensor_attr = 1180 to_sensor_dev_attr_2(attr); 1181 int nr = sensor_attr->nr; 1182 int index = sensor_attr->index; 1183 long tmp = temp_from_reg(data->pwm_temp[index][nr]); 1184 1185 return sprintf(buf, "%ld\n", tmp); 1186} 1187 1188static ssize_t 1189store_temp_pwm(struct device *dev, struct device_attribute *attr, 1190 const char *buf, size_t count) 1191{ 1192 struct i2c_client *client = to_i2c_client(dev); 1193 struct w83795_data *data = i2c_get_clientdata(client); 1194 struct sensor_device_attribute_2 *sensor_attr = 1195 to_sensor_dev_attr_2(attr); 1196 int nr = sensor_attr->nr; 1197 int index = sensor_attr->index; 1198 unsigned long val; 1199 u8 tmp; 1200 1201 if (kstrtoul(buf, 10, &val) < 0) 1202 return -EINVAL; 1203 val /= 1000; 1204 1205 mutex_lock(&data->update_lock); 1206 switch (nr) { 1207 case TEMP_PWM_TTTI: 1208 val = SENSORS_LIMIT(val, 0, 0x7f); 1209 w83795_write(client, W83795_REG_TTTI(index), val); 1210 break; 1211 case TEMP_PWM_CTFS: 1212 val = SENSORS_LIMIT(val, 0, 0x7f); 1213 w83795_write(client, W83795_REG_CTFS(index), val); 1214 break; 1215 case TEMP_PWM_HCT: 1216 val = SENSORS_LIMIT(val, 0, 0x0f); 1217 tmp = w83795_read(client, W83795_REG_HT(index)); 1218 tmp &= 0x0f; 1219 tmp |= (val << 4) & 0xf0; 1220 w83795_write(client, W83795_REG_HT(index), tmp); 1221 break; 1222 case TEMP_PWM_HOT: 1223 val = SENSORS_LIMIT(val, 0, 0x0f); 1224 tmp = w83795_read(client, W83795_REG_HT(index)); 1225 tmp &= 0xf0; 1226 tmp |= val & 0x0f; 1227 w83795_write(client, W83795_REG_HT(index), tmp); 1228 break; 1229 } 1230 data->pwm_temp[index][nr] = val; 1231 mutex_unlock(&data->update_lock); 1232 1233 return count; 1234} 1235 1236static ssize_t 1237show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1238{ 1239 struct w83795_data *data = w83795_update_pwm_config(dev); 1240 struct sensor_device_attribute_2 *sensor_attr = 1241 to_sensor_dev_attr_2(attr); 1242 int nr = sensor_attr->nr; 1243 int index = sensor_attr->index; 1244 1245 return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]); 1246} 1247 1248static ssize_t 1249store_sf4_pwm(struct device *dev, struct device_attribute *attr, 1250 const char *buf, size_t count) 1251{ 1252 struct i2c_client *client = to_i2c_client(dev); 1253 struct w83795_data *data = i2c_get_clientdata(client); 1254 struct sensor_device_attribute_2 *sensor_attr = 1255 to_sensor_dev_attr_2(attr); 1256 int nr = sensor_attr->nr; 1257 int index = sensor_attr->index; 1258 unsigned long val; 1259 1260 if (kstrtoul(buf, 10, &val) < 0) 1261 return -EINVAL; 1262 1263 mutex_lock(&data->update_lock); 1264 w83795_write(client, W83795_REG_SF4_PWM(index, nr), val); 1265 data->sf4_reg[index][SF4_PWM][nr] = val; 1266 mutex_unlock(&data->update_lock); 1267 1268 return count; 1269} 1270 1271static ssize_t 1272show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf) 1273{ 1274 struct w83795_data *data = w83795_update_pwm_config(dev); 1275 struct sensor_device_attribute_2 *sensor_attr = 1276 to_sensor_dev_attr_2(attr); 1277 int nr = sensor_attr->nr; 1278 int index = sensor_attr->index; 1279 1280 return sprintf(buf, "%u\n", 1281 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000); 1282} 1283 1284static ssize_t 1285store_sf4_temp(struct device *dev, struct device_attribute *attr, 1286 const char *buf, size_t count) 1287{ 1288 struct i2c_client *client = to_i2c_client(dev); 1289 struct w83795_data *data = i2c_get_clientdata(client); 1290 struct sensor_device_attribute_2 *sensor_attr = 1291 to_sensor_dev_attr_2(attr); 1292 int nr = sensor_attr->nr; 1293 int index = sensor_attr->index; 1294 unsigned long val; 1295 1296 if (kstrtoul(buf, 10, &val) < 0) 1297 return -EINVAL; 1298 val /= 1000; 1299 1300 mutex_lock(&data->update_lock); 1301 w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val); 1302 data->sf4_reg[index][SF4_TEMP][nr] = val; 1303 mutex_unlock(&data->update_lock); 1304 1305 return count; 1306} 1307 1308 1309static ssize_t 1310show_temp(struct device *dev, struct device_attribute *attr, char *buf) 1311{ 1312 struct sensor_device_attribute_2 *sensor_attr = 1313 to_sensor_dev_attr_2(attr); 1314 int nr = sensor_attr->nr; 1315 int index = sensor_attr->index; 1316 struct w83795_data *data = w83795_update_device(dev); 1317 long temp = temp_from_reg(data->temp[index][nr]); 1318 1319 if (nr == TEMP_READ) 1320 temp += (data->temp_read_vrlsb[index] >> 6) * 250; 1321 return sprintf(buf, "%ld\n", temp); 1322} 1323 1324static ssize_t 1325store_temp(struct device *dev, struct device_attribute *attr, 1326 const char *buf, size_t count) 1327{ 1328 struct sensor_device_attribute_2 *sensor_attr = 1329 to_sensor_dev_attr_2(attr); 1330 int nr = sensor_attr->nr; 1331 int index = sensor_attr->index; 1332 struct i2c_client *client = to_i2c_client(dev); 1333 struct w83795_data *data = i2c_get_clientdata(client); 1334 long tmp; 1335 1336 if (kstrtol(buf, 10, &tmp) < 0) 1337 return -EINVAL; 1338 1339 mutex_lock(&data->update_lock); 1340 data->temp[index][nr] = temp_to_reg(tmp, -128, 127); 1341 w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]); 1342 mutex_unlock(&data->update_lock); 1343 return count; 1344} 1345 1346 1347static ssize_t 1348show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf) 1349{ 1350 struct w83795_data *data = dev_get_drvdata(dev); 1351 int tmp; 1352 1353 if (data->enable_dts & 2) 1354 tmp = 5; 1355 else 1356 tmp = 6; 1357 1358 return sprintf(buf, "%d\n", tmp); 1359} 1360 1361static ssize_t 1362show_dts(struct device *dev, struct device_attribute *attr, char *buf) 1363{ 1364 struct sensor_device_attribute_2 *sensor_attr = 1365 to_sensor_dev_attr_2(attr); 1366 int index = sensor_attr->index; 1367 struct w83795_data *data = w83795_update_device(dev); 1368 long temp = temp_from_reg(data->dts[index]); 1369 1370 temp += (data->dts_read_vrlsb[index] >> 6) * 250; 1371 return sprintf(buf, "%ld\n", temp); 1372} 1373 1374static ssize_t 1375show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf) 1376{ 1377 struct sensor_device_attribute_2 *sensor_attr = 1378 to_sensor_dev_attr_2(attr); 1379 int nr = sensor_attr->nr; 1380 struct w83795_data *data = dev_get_drvdata(dev); 1381 long temp = temp_from_reg(data->dts_ext[nr]); 1382 1383 return sprintf(buf, "%ld\n", temp); 1384} 1385 1386static ssize_t 1387store_dts_ext(struct device *dev, struct device_attribute *attr, 1388 const char *buf, size_t count) 1389{ 1390 struct sensor_device_attribute_2 *sensor_attr = 1391 to_sensor_dev_attr_2(attr); 1392 int nr = sensor_attr->nr; 1393 struct i2c_client *client = to_i2c_client(dev); 1394 struct w83795_data *data = i2c_get_clientdata(client); 1395 long tmp; 1396 1397 if (kstrtol(buf, 10, &tmp) < 0) 1398 return -EINVAL; 1399 1400 mutex_lock(&data->update_lock); 1401 data->dts_ext[nr] = temp_to_reg(tmp, -128, 127); 1402 w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]); 1403 mutex_unlock(&data->update_lock); 1404 return count; 1405} 1406 1407 1408static ssize_t 1409show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf) 1410{ 1411 struct w83795_data *data = dev_get_drvdata(dev); 1412 struct sensor_device_attribute_2 *sensor_attr = 1413 to_sensor_dev_attr_2(attr); 1414 int index = sensor_attr->index; 1415 int tmp; 1416 1417 if (data->temp_mode & (1 << index)) 1418 tmp = 3; /* Thermal diode */ 1419 else 1420 tmp = 4; /* Thermistor */ 1421 1422 return sprintf(buf, "%d\n", tmp); 1423} 1424 1425/* Only for temp1-4 (temp5-6 can only be thermistor) */ 1426static ssize_t 1427store_temp_mode(struct device *dev, struct device_attribute *attr, 1428 const char *buf, size_t count) 1429{ 1430 struct i2c_client *client = to_i2c_client(dev); 1431 struct w83795_data *data = i2c_get_clientdata(client); 1432 struct sensor_device_attribute_2 *sensor_attr = 1433 to_sensor_dev_attr_2(attr); 1434 int index = sensor_attr->index; 1435 int reg_shift; 1436 unsigned long val; 1437 u8 tmp; 1438 1439 if (kstrtoul(buf, 10, &val) < 0) 1440 return -EINVAL; 1441 if ((val != 4) && (val != 3)) 1442 return -EINVAL; 1443 1444 mutex_lock(&data->update_lock); 1445 if (val == 3) { 1446 /* Thermal diode */ 1447 val = 0x01; 1448 data->temp_mode |= 1 << index; 1449 } else if (val == 4) { 1450 /* Thermistor */ 1451 val = 0x03; 1452 data->temp_mode &= ~(1 << index); 1453 } 1454 1455 reg_shift = 2 * index; 1456 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 1457 tmp &= ~(0x03 << reg_shift); 1458 tmp |= val << reg_shift; 1459 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp); 1460 1461 mutex_unlock(&data->update_lock); 1462 return count; 1463} 1464 1465 1466/* show/store VIN */ 1467static ssize_t 1468show_in(struct device *dev, struct device_attribute *attr, char *buf) 1469{ 1470 struct sensor_device_attribute_2 *sensor_attr = 1471 to_sensor_dev_attr_2(attr); 1472 int nr = sensor_attr->nr; 1473 int index = sensor_attr->index; 1474 struct w83795_data *data = w83795_update_device(dev); 1475 u16 val = data->in[index][nr]; 1476 u8 lsb_idx; 1477 1478 switch (nr) { 1479 case IN_READ: 1480 /* calculate this value again by sensors as sensors3.conf */ 1481 if ((index >= 17) && 1482 !((data->has_gain >> (index - 17)) & 1)) 1483 val *= 8; 1484 break; 1485 case IN_MAX: 1486 case IN_LOW: 1487 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1488 val <<= 2; 1489 val |= (data->in_lsb[lsb_idx][nr] >> 1490 IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]) & 0x03; 1491 if ((index >= 17) && 1492 !((data->has_gain >> (index - 17)) & 1)) 1493 val *= 8; 1494 break; 1495 } 1496 val = in_from_reg(index, val); 1497 1498 return sprintf(buf, "%d\n", val); 1499} 1500 1501static ssize_t 1502store_in(struct device *dev, struct device_attribute *attr, 1503 const char *buf, size_t count) 1504{ 1505 struct sensor_device_attribute_2 *sensor_attr = 1506 to_sensor_dev_attr_2(attr); 1507 int nr = sensor_attr->nr; 1508 int index = sensor_attr->index; 1509 struct i2c_client *client = to_i2c_client(dev); 1510 struct w83795_data *data = i2c_get_clientdata(client); 1511 unsigned long val; 1512 u8 tmp; 1513 u8 lsb_idx; 1514 1515 if (kstrtoul(buf, 10, &val) < 0) 1516 return -EINVAL; 1517 val = in_to_reg(index, val); 1518 1519 if ((index >= 17) && 1520 !((data->has_gain >> (index - 17)) & 1)) 1521 val /= 8; 1522 val = SENSORS_LIMIT(val, 0, 0x3FF); 1523 mutex_lock(&data->update_lock); 1524 1525 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1526 tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr)); 1527 tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]); 1528 tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]; 1529 w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp); 1530 data->in_lsb[lsb_idx][nr] = tmp; 1531 1532 tmp = (val >> 2) & 0xff; 1533 w83795_write(client, W83795_REG_IN[index][nr], tmp); 1534 data->in[index][nr] = tmp; 1535 1536 mutex_unlock(&data->update_lock); 1537 return count; 1538} 1539 1540 1541#ifdef CONFIG_SENSORS_W83795_FANCTRL 1542static ssize_t 1543show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf) 1544{ 1545 struct sensor_device_attribute_2 *sensor_attr = 1546 to_sensor_dev_attr_2(attr); 1547 int nr = sensor_attr->nr; 1548 struct w83795_data *data = w83795_update_pwm_config(dev); 1549 u16 val = data->setup_pwm[nr]; 1550 1551 switch (nr) { 1552 case SETUP_PWM_UPTIME: 1553 case SETUP_PWM_DOWNTIME: 1554 val = time_from_reg(val); 1555 break; 1556 } 1557 1558 return sprintf(buf, "%d\n", val); 1559} 1560 1561static ssize_t 1562store_sf_setup(struct device *dev, struct device_attribute *attr, 1563 const char *buf, size_t count) 1564{ 1565 struct sensor_device_attribute_2 *sensor_attr = 1566 to_sensor_dev_attr_2(attr); 1567 int nr = sensor_attr->nr; 1568 struct i2c_client *client = to_i2c_client(dev); 1569 struct w83795_data *data = i2c_get_clientdata(client); 1570 unsigned long val; 1571 1572 if (kstrtoul(buf, 10, &val) < 0) 1573 return -EINVAL; 1574 1575 switch (nr) { 1576 case SETUP_PWM_DEFAULT: 1577 val = SENSORS_LIMIT(val, 0, 0xff); 1578 break; 1579 case SETUP_PWM_UPTIME: 1580 case SETUP_PWM_DOWNTIME: 1581 val = time_to_reg(val); 1582 if (val == 0) 1583 return -EINVAL; 1584 break; 1585 } 1586 1587 mutex_lock(&data->update_lock); 1588 data->setup_pwm[nr] = val; 1589 w83795_write(client, W83795_REG_SETUP_PWM(nr), val); 1590 mutex_unlock(&data->update_lock); 1591 return count; 1592} 1593#endif 1594 1595 1596#define NOT_USED -1 1597 1598/* Don't change the attribute order, _max, _min and _beep are accessed by index 1599 * somewhere else in the code */ 1600#define SENSOR_ATTR_IN(index) { \ 1601 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ 1602 IN_READ, index), \ 1603 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \ 1604 store_in, IN_MAX, index), \ 1605 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \ 1606 store_in, IN_LOW, index), \ 1607 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \ 1608 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \ 1609 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \ 1610 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1611 index + ((index > 14) ? 1 : 0)) } 1612 1613/* Don't change the attribute order, _beep is accessed by index 1614 * somewhere else in the code */ 1615#define SENSOR_ATTR_FAN(index) { \ 1616 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ 1617 NULL, FAN_INPUT, index - 1), \ 1618 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \ 1619 show_fan, store_fan_min, FAN_MIN, index - 1), \ 1620 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \ 1621 NULL, ALARM_STATUS, index + 31), \ 1622 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \ 1623 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) } 1624 1625#define SENSOR_ATTR_PWM(index) { \ 1626 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \ 1627 store_pwm, PWM_OUTPUT, index - 1), \ 1628 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \ 1629 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \ 1630 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \ 1631 show_pwm, store_pwm, PWM_START, index - 1), \ 1632 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \ 1633 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \ 1634 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \ 1635 show_pwm, store_pwm, PWM_FREQ, index - 1), \ 1636 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \ 1637 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \ 1638 SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \ 1639 show_pwm_mode, NULL, NOT_USED, index - 1), \ 1640 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \ 1641 show_fanin, store_fanin, FANIN_TARGET, index - 1) } 1642 1643/* Don't change the attribute order, _beep is accessed by index 1644 * somewhere else in the code */ 1645#define SENSOR_ATTR_DTS(index) { \ 1646 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \ 1647 show_dts_mode, NULL, NOT_USED, index - 7), \ 1648 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \ 1649 NULL, NOT_USED, index - 7), \ 1650 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \ 1651 store_dts_ext, DTS_CRIT, NOT_USED), \ 1652 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \ 1653 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \ 1654 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \ 1655 store_dts_ext, DTS_WARN, NOT_USED), \ 1656 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1657 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \ 1658 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1659 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \ 1660 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1661 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) } 1662 1663/* Don't change the attribute order, _beep is accessed by index 1664 * somewhere else in the code */ 1665#define SENSOR_ATTR_TEMP(index) { \ 1666 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \ 1667 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ 1668 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \ 1669 NULL, TEMP_READ, index - 1), \ 1670 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \ 1671 store_temp, TEMP_CRIT, index - 1), \ 1672 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \ 1673 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \ 1674 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \ 1675 store_temp, TEMP_WARN, index - 1), \ 1676 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1677 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \ 1678 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1679 show_alarm_beep, NULL, ALARM_STATUS, \ 1680 index + (index > 4 ? 11 : 17)), \ 1681 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1682 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1683 index + (index > 4 ? 11 : 17)), \ 1684 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \ 1685 show_temp_pwm_enable, store_temp_pwm_enable, \ 1686 TEMP_PWM_ENABLE, index - 1), \ 1687 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \ 1688 show_temp_pwm_enable, store_temp_pwm_enable, \ 1689 TEMP_PWM_FAN_MAP, index - 1), \ 1690 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \ 1691 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \ 1692 SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO, \ 1693 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \ 1694 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO, \ 1695 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \ 1696 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \ 1697 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \ 1698 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \ 1699 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \ 1700 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \ 1701 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \ 1702 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \ 1703 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \ 1704 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \ 1705 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \ 1706 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \ 1707 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \ 1708 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \ 1709 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \ 1710 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \ 1711 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \ 1712 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\ 1713 show_sf4_temp, store_sf4_temp, 0, index - 1), \ 1714 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\ 1715 show_sf4_temp, store_sf4_temp, 1, index - 1), \ 1716 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\ 1717 show_sf4_temp, store_sf4_temp, 2, index - 1), \ 1718 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\ 1719 show_sf4_temp, store_sf4_temp, 3, index - 1), \ 1720 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\ 1721 show_sf4_temp, store_sf4_temp, 4, index - 1), \ 1722 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\ 1723 show_sf4_temp, store_sf4_temp, 5, index - 1), \ 1724 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\ 1725 show_sf4_temp, store_sf4_temp, 6, index - 1) } 1726 1727 1728static struct sensor_device_attribute_2 w83795_in[][5] = { 1729 SENSOR_ATTR_IN(0), 1730 SENSOR_ATTR_IN(1), 1731 SENSOR_ATTR_IN(2), 1732 SENSOR_ATTR_IN(3), 1733 SENSOR_ATTR_IN(4), 1734 SENSOR_ATTR_IN(5), 1735 SENSOR_ATTR_IN(6), 1736 SENSOR_ATTR_IN(7), 1737 SENSOR_ATTR_IN(8), 1738 SENSOR_ATTR_IN(9), 1739 SENSOR_ATTR_IN(10), 1740 SENSOR_ATTR_IN(11), 1741 SENSOR_ATTR_IN(12), 1742 SENSOR_ATTR_IN(13), 1743 SENSOR_ATTR_IN(14), 1744 SENSOR_ATTR_IN(15), 1745 SENSOR_ATTR_IN(16), 1746 SENSOR_ATTR_IN(17), 1747 SENSOR_ATTR_IN(18), 1748 SENSOR_ATTR_IN(19), 1749 SENSOR_ATTR_IN(20), 1750}; 1751 1752static const struct sensor_device_attribute_2 w83795_fan[][4] = { 1753 SENSOR_ATTR_FAN(1), 1754 SENSOR_ATTR_FAN(2), 1755 SENSOR_ATTR_FAN(3), 1756 SENSOR_ATTR_FAN(4), 1757 SENSOR_ATTR_FAN(5), 1758 SENSOR_ATTR_FAN(6), 1759 SENSOR_ATTR_FAN(7), 1760 SENSOR_ATTR_FAN(8), 1761 SENSOR_ATTR_FAN(9), 1762 SENSOR_ATTR_FAN(10), 1763 SENSOR_ATTR_FAN(11), 1764 SENSOR_ATTR_FAN(12), 1765 SENSOR_ATTR_FAN(13), 1766 SENSOR_ATTR_FAN(14), 1767}; 1768 1769static const struct sensor_device_attribute_2 w83795_temp[][28] = { 1770 SENSOR_ATTR_TEMP(1), 1771 SENSOR_ATTR_TEMP(2), 1772 SENSOR_ATTR_TEMP(3), 1773 SENSOR_ATTR_TEMP(4), 1774 SENSOR_ATTR_TEMP(5), 1775 SENSOR_ATTR_TEMP(6), 1776}; 1777 1778static const struct sensor_device_attribute_2 w83795_dts[][8] = { 1779 SENSOR_ATTR_DTS(7), 1780 SENSOR_ATTR_DTS(8), 1781 SENSOR_ATTR_DTS(9), 1782 SENSOR_ATTR_DTS(10), 1783 SENSOR_ATTR_DTS(11), 1784 SENSOR_ATTR_DTS(12), 1785 SENSOR_ATTR_DTS(13), 1786 SENSOR_ATTR_DTS(14), 1787}; 1788 1789static const struct sensor_device_attribute_2 w83795_pwm[][8] = { 1790 SENSOR_ATTR_PWM(1), 1791 SENSOR_ATTR_PWM(2), 1792 SENSOR_ATTR_PWM(3), 1793 SENSOR_ATTR_PWM(4), 1794 SENSOR_ATTR_PWM(5), 1795 SENSOR_ATTR_PWM(6), 1796 SENSOR_ATTR_PWM(7), 1797 SENSOR_ATTR_PWM(8), 1798}; 1799 1800static const struct sensor_device_attribute_2 w83795_tss[6] = { 1801 SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO, 1802 show_temp_src, store_temp_src, NOT_USED, 0), 1803 SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO, 1804 show_temp_src, store_temp_src, NOT_USED, 1), 1805 SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO, 1806 show_temp_src, store_temp_src, NOT_USED, 2), 1807 SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO, 1808 show_temp_src, store_temp_src, NOT_USED, 3), 1809 SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO, 1810 show_temp_src, store_temp_src, NOT_USED, 4), 1811 SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO, 1812 show_temp_src, store_temp_src, NOT_USED, 5), 1813}; 1814 1815static const struct sensor_device_attribute_2 sda_single_files[] = { 1816 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep, 1817 store_chassis_clear, ALARM_STATUS, 46), 1818#ifdef CONFIG_SENSORS_W83795_FANCTRL 1819 SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin, 1820 store_fanin, FANIN_TOL, NOT_USED), 1821 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup, 1822 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED), 1823 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup, 1824 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED), 1825 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup, 1826 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED), 1827#endif 1828}; 1829 1830static const struct sensor_device_attribute_2 sda_beep_files[] = { 1831 SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep, 1832 store_beep, BEEP_ENABLE, 46), 1833 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep, 1834 store_beep, BEEP_ENABLE, 47), 1835}; 1836 1837/* 1838 * Driver interface 1839 */ 1840 1841static void w83795_init_client(struct i2c_client *client) 1842{ 1843 struct w83795_data *data = i2c_get_clientdata(client); 1844 static const u16 clkin[4] = { /* in kHz */ 1845 14318, 24000, 33333, 48000 1846 }; 1847 u8 config; 1848 1849 if (reset) 1850 w83795_write(client, W83795_REG_CONFIG, 0x80); 1851 1852 /* Start monitoring if needed */ 1853 config = w83795_read(client, W83795_REG_CONFIG); 1854 if (!(config & W83795_REG_CONFIG_START)) { 1855 dev_info(&client->dev, "Enabling monitoring operations\n"); 1856 w83795_write(client, W83795_REG_CONFIG, 1857 config | W83795_REG_CONFIG_START); 1858 } 1859 1860 data->clkin = clkin[(config >> 3) & 0x3]; 1861 dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin); 1862} 1863 1864static int w83795_get_device_id(struct i2c_client *client) 1865{ 1866 int device_id; 1867 1868 device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID); 1869 1870 /* Special case for rev. A chips; can't be checked first because later 1871 revisions emulate this for compatibility */ 1872 if (device_id < 0 || (device_id & 0xf0) != 0x50) { 1873 int alt_id; 1874 1875 alt_id = i2c_smbus_read_byte_data(client, 1876 W83795_REG_DEVICEID_A); 1877 if (alt_id == 0x50) 1878 device_id = alt_id; 1879 } 1880 1881 return device_id; 1882} 1883 1884/* Return 0 if detection is successful, -ENODEV otherwise */ 1885static int w83795_detect(struct i2c_client *client, 1886 struct i2c_board_info *info) 1887{ 1888 int bank, vendor_id, device_id, expected, i2c_addr, config; 1889 struct i2c_adapter *adapter = client->adapter; 1890 unsigned short address = client->addr; 1891 const char *chip_name; 1892 1893 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1894 return -ENODEV; 1895 bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 1896 if (bank < 0 || (bank & 0x7c)) { 1897 dev_dbg(&adapter->dev, 1898 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1899 address, "bank"); 1900 return -ENODEV; 1901 } 1902 1903 /* Check Nuvoton vendor ID */ 1904 vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID); 1905 expected = bank & 0x80 ? 0x5c : 0xa3; 1906 if (vendor_id != expected) { 1907 dev_dbg(&adapter->dev, 1908 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1909 address, "vendor id"); 1910 return -ENODEV; 1911 } 1912 1913 /* Check device ID */ 1914 device_id = w83795_get_device_id(client) | 1915 (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8); 1916 if ((device_id >> 4) != 0x795) { 1917 dev_dbg(&adapter->dev, 1918 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1919 address, "device id\n"); 1920 return -ENODEV; 1921 } 1922 1923 /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR 1924 should match */ 1925 if ((bank & 0x07) == 0) { 1926 i2c_addr = i2c_smbus_read_byte_data(client, 1927 W83795_REG_I2C_ADDR); 1928 if ((i2c_addr & 0x7f) != address) { 1929 dev_dbg(&adapter->dev, 1930 "w83795: Detection failed at addr 0x%02hx, " 1931 "check %s\n", address, "i2c addr"); 1932 return -ENODEV; 1933 } 1934 } 1935 1936 /* Check 795 chip type: 795G or 795ADG 1937 Usually we don't write to chips during detection, but here we don't 1938 quite have the choice; hopefully it's OK, we are about to return 1939 success anyway */ 1940 if ((bank & 0x07) != 0) 1941 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, 1942 bank & ~0x07); 1943 config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG); 1944 if (config & W83795_REG_CONFIG_CONFIG48) 1945 chip_name = "w83795adg"; 1946 else 1947 chip_name = "w83795g"; 1948 1949 strlcpy(info->type, chip_name, I2C_NAME_SIZE); 1950 dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name, 1951 'A' + (device_id & 0xf), address); 1952 1953 return 0; 1954} 1955 1956static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, 1957 const struct device_attribute *)) 1958{ 1959 struct w83795_data *data = dev_get_drvdata(dev); 1960 int err, i, j; 1961 1962 for (i = 0; i < ARRAY_SIZE(w83795_in); i++) { 1963 if (!(data->has_in & (1 << i))) 1964 continue; 1965 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) { 1966 if (j == 4 && !data->enable_beep) 1967 continue; 1968 err = fn(dev, &w83795_in[i][j].dev_attr); 1969 if (err) 1970 return err; 1971 } 1972 } 1973 1974 for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) { 1975 if (!(data->has_fan & (1 << i))) 1976 continue; 1977 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) { 1978 if (j == 3 && !data->enable_beep) 1979 continue; 1980 err = fn(dev, &w83795_fan[i][j].dev_attr); 1981 if (err) 1982 return err; 1983 } 1984 } 1985 1986 for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) { 1987 j = w83795_tss_useful(data, i); 1988 if (!j) 1989 continue; 1990 err = fn(dev, &w83795_tss[i].dev_attr); 1991 if (err) 1992 return err; 1993 } 1994 1995 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) { 1996 err = fn(dev, &sda_single_files[i].dev_attr); 1997 if (err) 1998 return err; 1999 } 2000 2001 if (data->enable_beep) { 2002 for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) { 2003 err = fn(dev, &sda_beep_files[i].dev_attr); 2004 if (err) 2005 return err; 2006 } 2007 } 2008 2009#ifdef CONFIG_SENSORS_W83795_FANCTRL 2010 for (i = 0; i < data->has_pwm; i++) { 2011 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) { 2012 err = fn(dev, &w83795_pwm[i][j].dev_attr); 2013 if (err) 2014 return err; 2015 } 2016 } 2017#endif 2018 2019 for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) { 2020 if (!(data->has_temp & (1 << i))) 2021 continue; 2022#ifdef CONFIG_SENSORS_W83795_FANCTRL 2023 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) { 2024#else 2025 for (j = 0; j < 8; j++) { 2026#endif 2027 if (j == 7 && !data->enable_beep) 2028 continue; 2029 err = fn(dev, &w83795_temp[i][j].dev_attr); 2030 if (err) 2031 return err; 2032 } 2033 } 2034 2035 if (data->enable_dts) { 2036 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) { 2037 if (!(data->has_dts & (1 << i))) 2038 continue; 2039 for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) { 2040 if (j == 7 && !data->enable_beep) 2041 continue; 2042 err = fn(dev, &w83795_dts[i][j].dev_attr); 2043 if (err) 2044 return err; 2045 } 2046 } 2047 } 2048 2049 return 0; 2050} 2051 2052/* We need a wrapper that fits in w83795_handle_files */ 2053static int device_remove_file_wrapper(struct device *dev, 2054 const struct device_attribute *attr) 2055{ 2056 device_remove_file(dev, attr); 2057 return 0; 2058} 2059 2060static void w83795_check_dynamic_in_limits(struct i2c_client *client) 2061{ 2062 struct w83795_data *data = i2c_get_clientdata(client); 2063 u8 vid_ctl; 2064 int i, err_max, err_min; 2065 2066 vid_ctl = w83795_read(client, W83795_REG_VID_CTRL); 2067 2068 /* Return immediately if VRM isn't configured */ 2069 if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07) 2070 return; 2071 2072 data->has_dyn_in = (vid_ctl >> 3) & 0x07; 2073 for (i = 0; i < 2; i++) { 2074 if (!(data->has_dyn_in & (1 << i))) 2075 continue; 2076 2077 /* Voltage limits in dynamic mode, switch to read-only */ 2078 err_max = sysfs_chmod_file(&client->dev.kobj, 2079 &w83795_in[i][2].dev_attr.attr, 2080 S_IRUGO); 2081 err_min = sysfs_chmod_file(&client->dev.kobj, 2082 &w83795_in[i][3].dev_attr.attr, 2083 S_IRUGO); 2084 if (err_max || err_min) 2085 dev_warn(&client->dev, "Failed to set in%d limits " 2086 "read-only (%d, %d)\n", i, err_max, err_min); 2087 else 2088 dev_info(&client->dev, "in%d limits set dynamically " 2089 "from VID\n", i); 2090 } 2091} 2092 2093/* Check pins that can be used for either temperature or voltage monitoring */ 2094static void w83795_apply_temp_config(struct w83795_data *data, u8 config, 2095 int temp_chan, int in_chan) 2096{ 2097 /* config is a 2-bit value */ 2098 switch (config) { 2099 case 0x2: /* Voltage monitoring */ 2100 data->has_in |= 1 << in_chan; 2101 break; 2102 case 0x1: /* Thermal diode */ 2103 if (temp_chan >= 4) 2104 break; 2105 data->temp_mode |= 1 << temp_chan; 2106 /* fall through */ 2107 case 0x3: /* Thermistor */ 2108 data->has_temp |= 1 << temp_chan; 2109 break; 2110 } 2111} 2112 2113static int w83795_probe(struct i2c_client *client, 2114 const struct i2c_device_id *id) 2115{ 2116 int i; 2117 u8 tmp; 2118 struct device *dev = &client->dev; 2119 struct w83795_data *data; 2120 int err; 2121 2122 data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL); 2123 if (!data) { 2124 err = -ENOMEM; 2125 goto exit; 2126 } 2127 2128 i2c_set_clientdata(client, data); 2129 data->chip_type = id->driver_data; 2130 data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 2131 mutex_init(&data->update_lock); 2132 2133 /* Initialize the chip */ 2134 w83795_init_client(client); 2135 2136 /* Check which voltages and fans are present */ 2137 data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1) 2138 | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8); 2139 data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1) 2140 | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8); 2141 2142 /* Check which analog temperatures and extra voltages are present */ 2143 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1); 2144 if (tmp & 0x20) 2145 data->enable_dts = 1; 2146 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16); 2147 w83795_apply_temp_config(data, tmp & 0x3, 4, 15); 2148 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 2149 w83795_apply_temp_config(data, tmp >> 6, 3, 20); 2150 w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19); 2151 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18); 2152 w83795_apply_temp_config(data, tmp & 0x3, 0, 17); 2153 2154 /* Check DTS enable status */ 2155 if (data->enable_dts) { 2156 if (1 & w83795_read(client, W83795_REG_DTSC)) 2157 data->enable_dts |= 2; 2158 data->has_dts = w83795_read(client, W83795_REG_DTSE); 2159 } 2160 2161 /* Report PECI Tbase values */ 2162 if (data->enable_dts == 1) { 2163 for (i = 0; i < 8; i++) { 2164 if (!(data->has_dts & (1 << i))) 2165 continue; 2166 tmp = w83795_read(client, W83795_REG_PECI_TBASE(i)); 2167 dev_info(&client->dev, 2168 "PECI agent %d Tbase temperature: %u\n", 2169 i + 1, (unsigned int)tmp & 0x7f); 2170 } 2171 } 2172 2173 data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f; 2174 2175 /* pwm and smart fan */ 2176 if (data->chip_type == w83795g) 2177 data->has_pwm = 8; 2178 else 2179 data->has_pwm = 2; 2180 2181 /* Check if BEEP pin is available */ 2182 if (data->chip_type == w83795g) { 2183 /* The W83795G has a dedicated BEEP pin */ 2184 data->enable_beep = 1; 2185 } else { 2186 /* The W83795ADG has a shared pin for OVT# and BEEP, so you 2187 * can't have both */ 2188 tmp = w83795_read(client, W83795_REG_OVT_CFG); 2189 if ((tmp & OVT_CFG_SEL) == 0) 2190 data->enable_beep = 1; 2191 } 2192 2193 err = w83795_handle_files(dev, device_create_file); 2194 if (err) 2195 goto exit_remove; 2196 2197 if (data->chip_type == w83795g) 2198 w83795_check_dynamic_in_limits(client); 2199 2200 data->hwmon_dev = hwmon_device_register(dev); 2201 if (IS_ERR(data->hwmon_dev)) { 2202 err = PTR_ERR(data->hwmon_dev); 2203 goto exit_remove; 2204 } 2205 2206 return 0; 2207 2208exit_remove: 2209 w83795_handle_files(dev, device_remove_file_wrapper); 2210 kfree(data); 2211exit: 2212 return err; 2213} 2214 2215static int w83795_remove(struct i2c_client *client) 2216{ 2217 struct w83795_data *data = i2c_get_clientdata(client); 2218 2219 hwmon_device_unregister(data->hwmon_dev); 2220 w83795_handle_files(&client->dev, device_remove_file_wrapper); 2221 kfree(data); 2222 2223 return 0; 2224} 2225 2226 2227static const struct i2c_device_id w83795_id[] = { 2228 { "w83795g", w83795g }, 2229 { "w83795adg", w83795adg }, 2230 { } 2231}; 2232MODULE_DEVICE_TABLE(i2c, w83795_id); 2233 2234static struct i2c_driver w83795_driver = { 2235 .driver = { 2236 .name = "w83795", 2237 }, 2238 .probe = w83795_probe, 2239 .remove = w83795_remove, 2240 .id_table = w83795_id, 2241 2242 .class = I2C_CLASS_HWMON, 2243 .detect = w83795_detect, 2244 .address_list = normal_i2c, 2245}; 2246 2247static int __init sensors_w83795_init(void) 2248{ 2249 return i2c_add_driver(&w83795_driver); 2250} 2251 2252static void __exit sensors_w83795_exit(void) 2253{ 2254 i2c_del_driver(&w83795_driver); 2255} 2256 2257MODULE_AUTHOR("Wei Song, Jean Delvare <khali@linux-fr.org>"); 2258MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver"); 2259MODULE_LICENSE("GPL"); 2260 2261module_init(sensors_w83795_init); 2262module_exit(sensors_w83795_exit); 2263