w83795.c revision 01879a855fb6bdb3fb820344a7a145de8a5cdbda
1/* 2 * w83795.c - Linux kernel driver for hardware monitoring 3 * Copyright (C) 2008 Nuvoton Technology Corp. 4 * Wei Song 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation - version 2. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 * 02110-1301 USA. 19 * 20 * Supports following chips: 21 * 22 * Chip #vin #fanin #pwm #temp #dts wchipid vendid i2c ISA 23 * w83795g 21 14 8 6 8 0x79 0x5ca3 yes no 24 * w83795adg 18 14 2 6 8 0x79 0x5ca3 yes no 25 */ 26 27#include <linux/kernel.h> 28#include <linux/module.h> 29#include <linux/init.h> 30#include <linux/slab.h> 31#include <linux/i2c.h> 32#include <linux/hwmon.h> 33#include <linux/hwmon-sysfs.h> 34#include <linux/err.h> 35#include <linux/mutex.h> 36#include <linux/delay.h> 37 38/* Addresses to scan */ 39static const unsigned short normal_i2c[] = { 40 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END 41}; 42 43 44static int reset; 45module_param(reset, bool, 0); 46MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended"); 47 48 49#define W83795_REG_BANKSEL 0x00 50#define W83795_REG_VENDORID 0xfd 51#define W83795_REG_CHIPID 0xfe 52#define W83795_REG_DEVICEID 0xfb 53#define W83795_REG_DEVICEID_A 0xff 54 55#define W83795_REG_I2C_ADDR 0xfc 56#define W83795_REG_CONFIG 0x01 57#define W83795_REG_CONFIG_CONFIG48 0x04 58#define W83795_REG_CONFIG_START 0x01 59 60/* Multi-Function Pin Ctrl Registers */ 61#define W83795_REG_VOLT_CTRL1 0x02 62#define W83795_REG_VOLT_CTRL2 0x03 63#define W83795_REG_TEMP_CTRL1 0x04 64#define W83795_REG_TEMP_CTRL2 0x05 65#define W83795_REG_FANIN_CTRL1 0x06 66#define W83795_REG_FANIN_CTRL2 0x07 67#define W83795_REG_VMIGB_CTRL 0x08 68 69#define TEMP_CTRL_DISABLE 0 70#define TEMP_CTRL_TD 1 71#define TEMP_CTRL_VSEN 2 72#define TEMP_CTRL_TR 3 73#define TEMP_CTRL_SHIFT 4 74#define TEMP_CTRL_HASIN_SHIFT 5 75/* temp mode may effect VSEN17-12 (in20-15) */ 76static const u16 W83795_REG_TEMP_CTRL[][6] = { 77 /* Disable, TD, VSEN, TR, register shift value, has_in shift num */ 78 {0x00, 0x01, 0x02, 0x03, 0, 17}, /* TR1 */ 79 {0x00, 0x04, 0x08, 0x0C, 2, 18}, /* TR2 */ 80 {0x00, 0x10, 0x20, 0x30, 4, 19}, /* TR3 */ 81 {0x00, 0x40, 0x80, 0xC0, 6, 20}, /* TR4 */ 82 {0x00, 0x00, 0x02, 0x03, 0, 15}, /* TR5 */ 83 {0x00, 0x00, 0x08, 0x0C, 2, 16}, /* TR6 */ 84}; 85 86#define TEMP_READ 0 87#define TEMP_CRIT 1 88#define TEMP_CRIT_HYST 2 89#define TEMP_WARN 3 90#define TEMP_WARN_HYST 4 91/* only crit and crit_hyst affect real-time alarm status 92 * current crit crit_hyst warn warn_hyst */ 93static const u16 W83795_REG_TEMP[][5] = { 94 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */ 95 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */ 96 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */ 97 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */ 98 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */ 99 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */ 100}; 101 102#define IN_READ 0 103#define IN_MAX 1 104#define IN_LOW 2 105static const u16 W83795_REG_IN[][3] = { 106 /* Current, HL, LL */ 107 {0x10, 0x70, 0x71}, /* VSEN1 */ 108 {0x11, 0x72, 0x73}, /* VSEN2 */ 109 {0x12, 0x74, 0x75}, /* VSEN3 */ 110 {0x13, 0x76, 0x77}, /* VSEN4 */ 111 {0x14, 0x78, 0x79}, /* VSEN5 */ 112 {0x15, 0x7a, 0x7b}, /* VSEN6 */ 113 {0x16, 0x7c, 0x7d}, /* VSEN7 */ 114 {0x17, 0x7e, 0x7f}, /* VSEN8 */ 115 {0x18, 0x80, 0x81}, /* VSEN9 */ 116 {0x19, 0x82, 0x83}, /* VSEN10 */ 117 {0x1A, 0x84, 0x85}, /* VSEN11 */ 118 {0x1B, 0x86, 0x87}, /* VTT */ 119 {0x1C, 0x88, 0x89}, /* 3VDD */ 120 {0x1D, 0x8a, 0x8b}, /* 3VSB */ 121 {0x1E, 0x8c, 0x8d}, /* VBAT */ 122 {0x1F, 0xa6, 0xa7}, /* VSEN12 */ 123 {0x20, 0xaa, 0xab}, /* VSEN13 */ 124 {0x21, 0x96, 0x97}, /* VSEN14 */ 125 {0x22, 0x9a, 0x9b}, /* VSEN15 */ 126 {0x23, 0x9e, 0x9f}, /* VSEN16 */ 127 {0x24, 0xa2, 0xa3}, /* VSEN17 */ 128}; 129#define W83795_REG_VRLSB 0x3C 130#define VRLSB_SHIFT 6 131 132static const u8 W83795_REG_IN_HL_LSB[] = { 133 0x8e, /* VSEN1-4 */ 134 0x90, /* VSEN5-8 */ 135 0x92, /* VSEN9-11 */ 136 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */ 137 0xa8, /* VSEN12 */ 138 0xac, /* VSEN13 */ 139 0x98, /* VSEN14 */ 140 0x9c, /* VSEN15 */ 141 0xa0, /* VSEN16 */ 142 0xa4, /* VSEN17 */ 143}; 144 145#define IN_LSB_REG(index, type) \ 146 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \ 147 : (W83795_REG_IN_HL_LSB[(index)] + 1)) 148 149#define IN_LSB_REG_NUM 10 150 151#define IN_LSB_SHIFT 0 152#define IN_LSB_IDX 1 153static const u8 IN_LSB_SHIFT_IDX[][2] = { 154 /* High/Low LSB shift, LSB No. */ 155 {0x00, 0x00}, /* VSEN1 */ 156 {0x02, 0x00}, /* VSEN2 */ 157 {0x04, 0x00}, /* VSEN3 */ 158 {0x06, 0x00}, /* VSEN4 */ 159 {0x00, 0x01}, /* VSEN5 */ 160 {0x02, 0x01}, /* VSEN6 */ 161 {0x04, 0x01}, /* VSEN7 */ 162 {0x06, 0x01}, /* VSEN8 */ 163 {0x00, 0x02}, /* VSEN9 */ 164 {0x02, 0x02}, /* VSEN10 */ 165 {0x04, 0x02}, /* VSEN11 */ 166 {0x00, 0x03}, /* VTT */ 167 {0x02, 0x03}, /* 3VDD */ 168 {0x04, 0x03}, /* 3VSB */ 169 {0x06, 0x03}, /* VBAT */ 170 {0x06, 0x04}, /* VSEN12 */ 171 {0x06, 0x05}, /* VSEN13 */ 172 {0x06, 0x06}, /* VSEN14 */ 173 {0x06, 0x07}, /* VSEN15 */ 174 {0x06, 0x08}, /* VSEN16 */ 175 {0x06, 0x09}, /* VSEN17 */ 176}; 177 178 179/* 3VDD, 3VSB, VBAT * 0.006 */ 180#define REST_VLT_BEGIN 12 /* the 13th volt to 15th */ 181#define REST_VLT_END 14 /* the 13th volt to 15th */ 182 183#define W83795_REG_FAN(index) (0x2E + (index)) 184#define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index)) 185#define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2) 186#define W83795_REG_FAN_MIN_LSB_SHIFT(index) \ 187 (((index) % 1) ? 4 : 0) 188 189#define W83795_REG_VID_CTRL 0x6A 190 191#define ALARM_BEEP_REG_NUM 6 192#define W83795_REG_ALARM(index) (0x41 + (index)) 193#define W83795_REG_BEEP(index) (0x50 + (index)) 194 195#define W83795_REG_CLR_CHASSIS 0x4D 196 197 198#define W83795_REG_TEMP_NUM 6 199#define W83795_REG_FCMS1 0x201 200#define W83795_REG_FCMS2 0x208 201#define W83795_REG_TFMR(index) (0x202 + (index)) 202#define W83795_REG_FOMC 0x20F 203 204#define W83795_REG_TSS(index) (0x209 + (index)) 205 206#define PWM_OUTPUT 0 207#define PWM_START 1 208#define PWM_NONSTOP 2 209#define PWM_STOP_TIME 3 210#define PWM_FREQ 4 211#define W83795_REG_PWM(index, nr) \ 212 (((nr) == 0 ? 0x210 : \ 213 (nr) == 1 ? 0x220 : \ 214 (nr) == 2 ? 0x228 : \ 215 (nr) == 3 ? 0x230 : 0x218) + (index)) 216 217#define W83795_REG_FTSH(index) (0x240 + (index) * 2) 218#define W83795_REG_FTSL(index) (0x241 + (index) * 2) 219#define W83795_REG_TFTS 0x250 220 221#define TEMP_PWM_TTTI 0 222#define TEMP_PWM_CTFS 1 223#define TEMP_PWM_HCT 2 224#define TEMP_PWM_HOT 3 225#define W83795_REG_TTTI(index) (0x260 + (index)) 226#define W83795_REG_CTFS(index) (0x268 + (index)) 227#define W83795_REG_HT(index) (0x270 + (index)) 228 229#define SF4_TEMP 0 230#define SF4_PWM 1 231#define W83795_REG_SF4_TEMP(temp_num, index) \ 232 (0x280 + 0x10 * (temp_num) + (index)) 233#define W83795_REG_SF4_PWM(temp_num, index) \ 234 (0x288 + 0x10 * (temp_num) + (index)) 235 236#define W83795_REG_DTSC 0x301 237#define W83795_REG_DTSE 0x302 238#define W83795_REG_DTS(index) (0x26 + (index)) 239 240#define DTS_CRIT 0 241#define DTS_CRIT_HYST 1 242#define DTS_WARN 2 243#define DTS_WARN_HYST 3 244#define W83795_REG_DTS_EXT(index) (0xB2 + (index)) 245 246#define SETUP_PWM_DEFAULT 0 247#define SETUP_PWM_UPTIME 1 248#define SETUP_PWM_DOWNTIME 2 249#define W83795_REG_SETUP_PWM(index) (0x20C + (index)) 250 251static inline u16 in_from_reg(u8 index, u16 val) 252{ 253 if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END)) 254 return val * 6; 255 else 256 return val * 2; 257} 258 259static inline u16 in_to_reg(u8 index, u16 val) 260{ 261 if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END)) 262 return val / 6; 263 else 264 return val / 2; 265} 266 267static inline unsigned long fan_from_reg(u16 val) 268{ 269 if ((val == 0xfff) || (val == 0)) 270 return 0; 271 return 1350000UL / val; 272} 273 274static inline u16 fan_to_reg(long rpm) 275{ 276 if (rpm <= 0) 277 return 0x0fff; 278 return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe); 279} 280 281static inline unsigned long time_from_reg(u8 reg) 282{ 283 return reg * 100; 284} 285 286static inline u8 time_to_reg(unsigned long val) 287{ 288 return SENSORS_LIMIT((val + 50) / 100, 0, 0xff); 289} 290 291static inline long temp_from_reg(s8 reg) 292{ 293 return reg * 1000; 294} 295 296static inline s8 temp_to_reg(long val, s8 min, s8 max) 297{ 298 return SENSORS_LIMIT((val < 0 ? -val : val) / 1000, min, max); 299} 300 301static const u16 pwm_freq_cksel0[16] = { 302 1024, 512, 341, 256, 205, 171, 146, 128, 303 85, 64, 32, 16, 8, 4, 2, 1 304}; 305 306static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin) 307{ 308 unsigned long base_clock; 309 310 if (reg & 0x80) { 311 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 312 return base_clock / ((reg & 0x7f) + 1); 313 } else 314 return pwm_freq_cksel0[reg & 0x0f]; 315} 316 317static u8 pwm_freq_to_reg(unsigned long val, u16 clkin) 318{ 319 unsigned long base_clock; 320 u8 reg0, reg1; 321 unsigned long best0, best1; 322 323 /* Best fit for cksel = 0 */ 324 for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) { 325 if (val > (pwm_freq_cksel0[reg0] + 326 pwm_freq_cksel0[reg0 + 1]) / 2) 327 break; 328 } 329 if (val < 375) /* cksel = 1 can't beat this */ 330 return reg0; 331 best0 = pwm_freq_cksel0[reg0]; 332 333 /* Best fit for cksel = 1 */ 334 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 335 reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128); 336 best1 = base_clock / reg1; 337 reg1 = 0x80 | (reg1 - 1); 338 339 /* Choose the closest one */ 340 if (abs(val - best0) > abs(val - best1)) 341 return reg1; 342 else 343 return reg0; 344} 345 346enum chip_types {w83795g, w83795adg}; 347 348struct w83795_data { 349 struct device *hwmon_dev; 350 struct mutex update_lock; 351 unsigned long last_updated; /* In jiffies */ 352 enum chip_types chip_type; 353 354 u8 bank; 355 356 u32 has_in; /* Enable monitor VIN or not */ 357 u8 has_dyn_in; /* Only in2-0 can have this */ 358 u16 in[21][3]; /* Register value, read/high/low */ 359 u8 in_lsb[10][3]; /* LSB Register value, high/low */ 360 u8 has_gain; /* has gain: in17-20 * 8 */ 361 362 u16 has_fan; /* Enable fan14-1 or not */ 363 u16 fan[14]; /* Register value combine */ 364 u16 fan_min[14]; /* Register value combine */ 365 366 u8 has_temp; /* Enable monitor temp6-1 or not */ 367 u8 temp[6][5]; /* current, crit, crit_hyst, warn, warn_hyst */ 368 u8 temp_read_vrlsb[6]; 369 u8 temp_mode; /* bit 0: TR mode, bit 1: TD mode */ 370 u8 temp_src[3]; /* Register value */ 371 372 u8 enable_dts; /* Enable PECI and SB-TSI, 373 * bit 0: =1 enable, =0 disable, 374 * bit 1: =1 AMD SB-TSI, =0 Intel PECI */ 375 u8 has_dts; /* Enable monitor DTS temp */ 376 u8 dts[8]; /* Register value */ 377 u8 dts_read_vrlsb[8]; /* Register value */ 378 u8 dts_ext[4]; /* Register value */ 379 380 u8 has_pwm; /* 795g supports 8 pwm, 795adg only supports 2, 381 * no config register, only affected by chip 382 * type */ 383 u8 pwm[8][5]; /* Register value, output, start, non stop, stop 384 * time, freq */ 385 u16 clkin; /* CLKIN frequency in kHz */ 386 u8 pwm_fcms[2]; /* Register value */ 387 u8 pwm_tfmr[6]; /* Register value */ 388 u8 pwm_fomc; /* Register value */ 389 390 u16 target_speed[8]; /* Register value, target speed for speed 391 * cruise */ 392 u8 tol_speed; /* tolerance of target speed */ 393 u8 pwm_temp[6][4]; /* TTTI, CTFS, HCT, HOT */ 394 u8 sf4_reg[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */ 395 396 u8 setup_pwm[3]; /* Register value */ 397 398 u8 alarms[6]; /* Register value */ 399 u8 beeps[6]; /* Register value */ 400 u8 beep_enable; 401 402 char valid; 403}; 404 405/* 406 * Hardware access 407 * We assume that nobdody can change the bank outside the driver. 408 */ 409 410/* Must be called with data->update_lock held, except during initialization */ 411static int w83795_set_bank(struct i2c_client *client, u8 bank) 412{ 413 struct w83795_data *data = i2c_get_clientdata(client); 414 int err; 415 416 /* If the same bank is already set, nothing to do */ 417 if ((data->bank & 0x07) == bank) 418 return 0; 419 420 /* Change to new bank, preserve all other bits */ 421 bank |= data->bank & ~0x07; 422 err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank); 423 if (err < 0) { 424 dev_err(&client->dev, 425 "Failed to set bank to %d, err %d\n", 426 (int)bank, err); 427 return err; 428 } 429 data->bank = bank; 430 431 return 0; 432} 433 434/* Must be called with data->update_lock held, except during initialization */ 435static u8 w83795_read(struct i2c_client *client, u16 reg) 436{ 437 int err; 438 439 err = w83795_set_bank(client, reg >> 8); 440 if (err < 0) 441 return 0x00; /* Arbitrary */ 442 443 err = i2c_smbus_read_byte_data(client, reg & 0xff); 444 if (err < 0) { 445 dev_err(&client->dev, 446 "Failed to read from register 0x%03x, err %d\n", 447 (int)reg, err); 448 return 0x00; /* Arbitrary */ 449 } 450 return err; 451} 452 453/* Must be called with data->update_lock held, except during initialization */ 454static int w83795_write(struct i2c_client *client, u16 reg, u8 value) 455{ 456 int err; 457 458 err = w83795_set_bank(client, reg >> 8); 459 if (err < 0) 460 return err; 461 462 err = i2c_smbus_write_byte_data(client, reg & 0xff, value); 463 if (err < 0) 464 dev_err(&client->dev, 465 "Failed to write to register 0x%03x, err %d\n", 466 (int)reg, err); 467 return err; 468} 469 470static struct w83795_data *w83795_update_device(struct device *dev) 471{ 472 struct i2c_client *client = to_i2c_client(dev); 473 struct w83795_data *data = i2c_get_clientdata(client); 474 u16 tmp; 475 int i; 476 477 mutex_lock(&data->update_lock); 478 479 if (!(time_after(jiffies, data->last_updated + HZ * 2) 480 || !data->valid)) 481 goto END; 482 483 /* Update the voltages value */ 484 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 485 if (!(data->has_in & (1 << i))) 486 continue; 487 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2; 488 tmp |= (w83795_read(client, W83795_REG_VRLSB) 489 >> VRLSB_SHIFT) & 0x03; 490 data->in[i][IN_READ] = tmp; 491 } 492 493 /* in0-2 can have dynamic limits (W83795G only) */ 494 if (data->has_dyn_in) { 495 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX)); 496 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW)); 497 498 for (i = 0; i < 3; i++) { 499 if (!(data->has_dyn_in & (1 << i))) 500 continue; 501 data->in[i][IN_MAX] = 502 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 503 data->in[i][IN_LOW] = 504 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 505 data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03; 506 data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03; 507 } 508 } 509 510 /* Update fan */ 511 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 512 if (!(data->has_fan & (1 << i))) 513 continue; 514 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4; 515 data->fan[i] |= 516 (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F; 517 } 518 519 /* Update temperature */ 520 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 521 /* even stop monitor, register still keep value, just read out 522 * it */ 523 if (!(data->has_temp & (1 << i))) { 524 data->temp[i][TEMP_READ] = 0; 525 data->temp_read_vrlsb[i] = 0; 526 continue; 527 } 528 data->temp[i][TEMP_READ] = 529 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]); 530 data->temp_read_vrlsb[i] = 531 w83795_read(client, W83795_REG_VRLSB); 532 } 533 534 /* Update dts temperature */ 535 if (data->enable_dts != 0) { 536 for (i = 0; i < ARRAY_SIZE(data->dts); i++) { 537 if (!(data->has_dts & (1 << i))) 538 continue; 539 data->dts[i] = 540 w83795_read(client, W83795_REG_DTS(i)); 541 data->dts_read_vrlsb[i] = 542 w83795_read(client, W83795_REG_VRLSB); 543 } 544 } 545 546 /* Update pwm output */ 547 for (i = 0; i < data->has_pwm; i++) { 548 data->pwm[i][PWM_OUTPUT] = 549 w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT)); 550 } 551 552 /* update alarm */ 553 for (i = 0; i < ALARM_BEEP_REG_NUM; i++) 554 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i)); 555 556 data->last_updated = jiffies; 557 data->valid = 1; 558 559END: 560 mutex_unlock(&data->update_lock); 561 return data; 562} 563 564/* 565 * Sysfs attributes 566 */ 567 568#define ALARM_STATUS 0 569#define BEEP_ENABLE 1 570static ssize_t 571show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf) 572{ 573 struct w83795_data *data = w83795_update_device(dev); 574 struct sensor_device_attribute_2 *sensor_attr = 575 to_sensor_dev_attr_2(attr); 576 int nr = sensor_attr->nr; 577 int index = sensor_attr->index >> 3; 578 int bit = sensor_attr->index & 0x07; 579 u8 val; 580 581 if (ALARM_STATUS == nr) { 582 val = (data->alarms[index] >> (bit)) & 1; 583 } else { /* BEEP_ENABLE */ 584 val = (data->beeps[index] >> (bit)) & 1; 585 } 586 587 return sprintf(buf, "%u\n", val); 588} 589 590static ssize_t 591store_beep(struct device *dev, struct device_attribute *attr, 592 const char *buf, size_t count) 593{ 594 struct i2c_client *client = to_i2c_client(dev); 595 struct w83795_data *data = i2c_get_clientdata(client); 596 struct sensor_device_attribute_2 *sensor_attr = 597 to_sensor_dev_attr_2(attr); 598 int index = sensor_attr->index >> 3; 599 int shift = sensor_attr->index & 0x07; 600 u8 beep_bit = 1 << shift; 601 unsigned long val; 602 603 if (strict_strtoul(buf, 10, &val) < 0) 604 return -EINVAL; 605 if (val != 0 && val != 1) 606 return -EINVAL; 607 608 mutex_lock(&data->update_lock); 609 data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index)); 610 data->beeps[index] &= ~beep_bit; 611 data->beeps[index] |= val << shift; 612 w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]); 613 mutex_unlock(&data->update_lock); 614 615 return count; 616} 617 618static ssize_t 619show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf) 620{ 621 struct i2c_client *client = to_i2c_client(dev); 622 struct w83795_data *data = i2c_get_clientdata(client); 623 return sprintf(buf, "%u\n", data->beep_enable); 624} 625 626static ssize_t 627store_beep_enable(struct device *dev, struct device_attribute *attr, 628 const char *buf, size_t count) 629{ 630 struct i2c_client *client = to_i2c_client(dev); 631 struct w83795_data *data = i2c_get_clientdata(client); 632 unsigned long val; 633 u8 tmp; 634 635 if (strict_strtoul(buf, 10, &val) < 0) 636 return -EINVAL; 637 if (val != 0 && val != 1) 638 return -EINVAL; 639 640 mutex_lock(&data->update_lock); 641 data->beep_enable = val; 642 tmp = w83795_read(client, W83795_REG_BEEP(5)); 643 tmp &= 0x7f; 644 tmp |= val << 7; 645 w83795_write(client, W83795_REG_BEEP(5), tmp); 646 mutex_unlock(&data->update_lock); 647 648 return count; 649} 650 651/* Write any value to clear chassis alarm */ 652static ssize_t 653store_chassis_clear(struct device *dev, 654 struct device_attribute *attr, const char *buf, 655 size_t count) 656{ 657 struct i2c_client *client = to_i2c_client(dev); 658 struct w83795_data *data = i2c_get_clientdata(client); 659 u8 val; 660 661 mutex_lock(&data->update_lock); 662 val = w83795_read(client, W83795_REG_CLR_CHASSIS); 663 val |= 0x80; 664 w83795_write(client, W83795_REG_CLR_CHASSIS, val); 665 mutex_unlock(&data->update_lock); 666 return count; 667} 668 669#define FAN_INPUT 0 670#define FAN_MIN 1 671static ssize_t 672show_fan(struct device *dev, struct device_attribute *attr, char *buf) 673{ 674 struct sensor_device_attribute_2 *sensor_attr = 675 to_sensor_dev_attr_2(attr); 676 int nr = sensor_attr->nr; 677 int index = sensor_attr->index; 678 struct w83795_data *data = w83795_update_device(dev); 679 u16 val; 680 681 if (FAN_INPUT == nr) 682 val = data->fan[index] & 0x0fff; 683 else 684 val = data->fan_min[index] & 0x0fff; 685 686 return sprintf(buf, "%lu\n", fan_from_reg(val)); 687} 688 689static ssize_t 690store_fan_min(struct device *dev, struct device_attribute *attr, 691 const char *buf, size_t count) 692{ 693 struct sensor_device_attribute_2 *sensor_attr = 694 to_sensor_dev_attr_2(attr); 695 int index = sensor_attr->index; 696 struct i2c_client *client = to_i2c_client(dev); 697 struct w83795_data *data = i2c_get_clientdata(client); 698 unsigned long val; 699 700 if (strict_strtoul(buf, 10, &val)) 701 return -EINVAL; 702 val = fan_to_reg(val); 703 704 mutex_lock(&data->update_lock); 705 data->fan_min[index] = val; 706 w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff); 707 val &= 0x0f; 708 if (index % 1) { 709 val <<= 4; 710 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 711 & 0x0f; 712 } else { 713 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 714 & 0xf0; 715 } 716 w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff); 717 mutex_unlock(&data->update_lock); 718 719 return count; 720} 721 722static ssize_t 723show_pwm(struct device *dev, struct device_attribute *attr, char *buf) 724{ 725 struct w83795_data *data = w83795_update_device(dev); 726 struct sensor_device_attribute_2 *sensor_attr = 727 to_sensor_dev_attr_2(attr); 728 int nr = sensor_attr->nr; 729 int index = sensor_attr->index; 730 unsigned int val; 731 732 switch (nr) { 733 case PWM_STOP_TIME: 734 val = time_from_reg(data->pwm[index][nr]); 735 break; 736 case PWM_FREQ: 737 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin); 738 break; 739 default: 740 val = data->pwm[index][nr]; 741 break; 742 } 743 744 return sprintf(buf, "%u\n", val); 745} 746 747static ssize_t 748store_pwm(struct device *dev, struct device_attribute *attr, 749 const char *buf, size_t count) 750{ 751 struct i2c_client *client = to_i2c_client(dev); 752 struct w83795_data *data = i2c_get_clientdata(client); 753 struct sensor_device_attribute_2 *sensor_attr = 754 to_sensor_dev_attr_2(attr); 755 int nr = sensor_attr->nr; 756 int index = sensor_attr->index; 757 unsigned long val; 758 759 if (strict_strtoul(buf, 10, &val) < 0) 760 return -EINVAL; 761 762 mutex_lock(&data->update_lock); 763 switch (nr) { 764 case PWM_STOP_TIME: 765 val = time_to_reg(val); 766 break; 767 case PWM_FREQ: 768 val = pwm_freq_to_reg(val, data->clkin); 769 break; 770 default: 771 val = SENSORS_LIMIT(val, 0, 0xff); 772 break; 773 } 774 w83795_write(client, W83795_REG_PWM(index, nr), val); 775 data->pwm[index][nr] = val; 776 mutex_unlock(&data->update_lock); 777 return count; 778} 779 780static ssize_t 781show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf) 782{ 783 struct sensor_device_attribute_2 *sensor_attr = 784 to_sensor_dev_attr_2(attr); 785 struct i2c_client *client = to_i2c_client(dev); 786 struct w83795_data *data = i2c_get_clientdata(client); 787 int index = sensor_attr->index; 788 u8 tmp; 789 790 if (1 == (data->pwm_fcms[0] & (1 << index))) { 791 tmp = 2; 792 goto out; 793 } 794 for (tmp = 0; tmp < 6; tmp++) { 795 if (data->pwm_tfmr[tmp] & (1 << index)) { 796 tmp = 3; 797 goto out; 798 } 799 } 800 if (data->pwm_fomc & (1 << index)) 801 tmp = 0; 802 else 803 tmp = 1; 804 805out: 806 return sprintf(buf, "%u\n", tmp); 807} 808 809static ssize_t 810store_pwm_enable(struct device *dev, struct device_attribute *attr, 811 const char *buf, size_t count) 812{ 813 struct i2c_client *client = to_i2c_client(dev); 814 struct w83795_data *data = i2c_get_clientdata(client); 815 struct sensor_device_attribute_2 *sensor_attr = 816 to_sensor_dev_attr_2(attr); 817 int index = sensor_attr->index; 818 unsigned long val; 819 int i; 820 821 if (strict_strtoul(buf, 10, &val) < 0) 822 return -EINVAL; 823 if (val > 2) 824 return -EINVAL; 825 826 mutex_lock(&data->update_lock); 827 switch (val) { 828 case 0: 829 case 1: 830 data->pwm_fcms[0] &= ~(1 << index); 831 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 832 for (i = 0; i < 6; i++) { 833 data->pwm_tfmr[i] &= ~(1 << index); 834 w83795_write(client, W83795_REG_TFMR(i), 835 data->pwm_tfmr[i]); 836 } 837 data->pwm_fomc |= 1 << index; 838 data->pwm_fomc ^= val << index; 839 w83795_write(client, W83795_REG_FOMC, data->pwm_fomc); 840 break; 841 case 2: 842 data->pwm_fcms[0] |= (1 << index); 843 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 844 break; 845 } 846 mutex_unlock(&data->update_lock); 847 return count; 848} 849 850static ssize_t 851show_temp_src(struct device *dev, struct device_attribute *attr, char *buf) 852{ 853 struct sensor_device_attribute_2 *sensor_attr = 854 to_sensor_dev_attr_2(attr); 855 struct i2c_client *client = to_i2c_client(dev); 856 struct w83795_data *data = i2c_get_clientdata(client); 857 int index = sensor_attr->index; 858 u8 val = index / 2; 859 u8 tmp = data->temp_src[val]; 860 861 if (index % 1) 862 val = 4; 863 else 864 val = 0; 865 tmp >>= val; 866 tmp &= 0x0f; 867 868 return sprintf(buf, "%u\n", tmp); 869} 870 871static ssize_t 872store_temp_src(struct device *dev, struct device_attribute *attr, 873 const char *buf, size_t count) 874{ 875 struct i2c_client *client = to_i2c_client(dev); 876 struct w83795_data *data = i2c_get_clientdata(client); 877 struct sensor_device_attribute_2 *sensor_attr = 878 to_sensor_dev_attr_2(attr); 879 int index = sensor_attr->index; 880 unsigned long tmp; 881 u8 val = index / 2; 882 883 if (strict_strtoul(buf, 10, &tmp) < 0) 884 return -EINVAL; 885 tmp = SENSORS_LIMIT(tmp, 0, 15); 886 887 mutex_lock(&data->update_lock); 888 if (index % 1) { 889 tmp <<= 4; 890 data->temp_src[val] &= 0x0f; 891 } else { 892 data->temp_src[val] &= 0xf0; 893 } 894 data->temp_src[val] |= tmp; 895 w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]); 896 mutex_unlock(&data->update_lock); 897 898 return count; 899} 900 901#define TEMP_PWM_ENABLE 0 902#define TEMP_PWM_FAN_MAP 1 903static ssize_t 904show_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 905 char *buf) 906{ 907 struct i2c_client *client = to_i2c_client(dev); 908 struct w83795_data *data = i2c_get_clientdata(client); 909 struct sensor_device_attribute_2 *sensor_attr = 910 to_sensor_dev_attr_2(attr); 911 int nr = sensor_attr->nr; 912 int index = sensor_attr->index; 913 u8 tmp = 0xff; 914 915 switch (nr) { 916 case TEMP_PWM_ENABLE: 917 tmp = (data->pwm_fcms[1] >> index) & 1; 918 if (tmp) 919 tmp = 4; 920 else 921 tmp = 3; 922 break; 923 case TEMP_PWM_FAN_MAP: 924 tmp = data->pwm_tfmr[index]; 925 break; 926 } 927 928 return sprintf(buf, "%u\n", tmp); 929} 930 931static ssize_t 932store_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 933 const char *buf, size_t count) 934{ 935 struct i2c_client *client = to_i2c_client(dev); 936 struct w83795_data *data = i2c_get_clientdata(client); 937 struct sensor_device_attribute_2 *sensor_attr = 938 to_sensor_dev_attr_2(attr); 939 int nr = sensor_attr->nr; 940 int index = sensor_attr->index; 941 unsigned long tmp; 942 943 if (strict_strtoul(buf, 10, &tmp) < 0) 944 return -EINVAL; 945 946 switch (nr) { 947 case TEMP_PWM_ENABLE: 948 if ((tmp != 3) && (tmp != 4)) 949 return -EINVAL; 950 tmp -= 3; 951 mutex_lock(&data->update_lock); 952 data->pwm_fcms[1] &= ~(1 << index); 953 data->pwm_fcms[1] |= tmp << index; 954 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]); 955 mutex_unlock(&data->update_lock); 956 break; 957 case TEMP_PWM_FAN_MAP: 958 mutex_lock(&data->update_lock); 959 tmp = SENSORS_LIMIT(tmp, 0, 0xff); 960 w83795_write(client, W83795_REG_TFMR(index), tmp); 961 data->pwm_tfmr[index] = tmp; 962 mutex_unlock(&data->update_lock); 963 break; 964 } 965 return count; 966} 967 968#define FANIN_TARGET 0 969#define FANIN_TOL 1 970static ssize_t 971show_fanin(struct device *dev, struct device_attribute *attr, char *buf) 972{ 973 struct i2c_client *client = to_i2c_client(dev); 974 struct w83795_data *data = i2c_get_clientdata(client); 975 struct sensor_device_attribute_2 *sensor_attr = 976 to_sensor_dev_attr_2(attr); 977 int nr = sensor_attr->nr; 978 int index = sensor_attr->index; 979 u16 tmp = 0; 980 981 switch (nr) { 982 case FANIN_TARGET: 983 tmp = fan_from_reg(data->target_speed[index]); 984 break; 985 case FANIN_TOL: 986 tmp = data->tol_speed; 987 break; 988 } 989 990 return sprintf(buf, "%u\n", tmp); 991} 992 993static ssize_t 994store_fanin(struct device *dev, struct device_attribute *attr, 995 const char *buf, size_t count) 996{ 997 struct i2c_client *client = to_i2c_client(dev); 998 struct w83795_data *data = i2c_get_clientdata(client); 999 struct sensor_device_attribute_2 *sensor_attr = 1000 to_sensor_dev_attr_2(attr); 1001 int nr = sensor_attr->nr; 1002 int index = sensor_attr->index; 1003 unsigned long val; 1004 1005 if (strict_strtoul(buf, 10, &val) < 0) 1006 return -EINVAL; 1007 1008 mutex_lock(&data->update_lock); 1009 switch (nr) { 1010 case FANIN_TARGET: 1011 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff)); 1012 w83795_write(client, W83795_REG_FTSH(index), (val >> 4) & 0xff); 1013 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0); 1014 data->target_speed[index] = val; 1015 break; 1016 case FANIN_TOL: 1017 val = SENSORS_LIMIT(val, 0, 0x3f); 1018 w83795_write(client, W83795_REG_TFTS, val); 1019 data->tol_speed = val; 1020 break; 1021 } 1022 mutex_unlock(&data->update_lock); 1023 1024 return count; 1025} 1026 1027 1028static ssize_t 1029show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1030{ 1031 struct i2c_client *client = to_i2c_client(dev); 1032 struct w83795_data *data = i2c_get_clientdata(client); 1033 struct sensor_device_attribute_2 *sensor_attr = 1034 to_sensor_dev_attr_2(attr); 1035 int nr = sensor_attr->nr; 1036 int index = sensor_attr->index; 1037 long tmp = temp_from_reg(data->pwm_temp[index][nr]); 1038 1039 return sprintf(buf, "%ld\n", tmp); 1040} 1041 1042static ssize_t 1043store_temp_pwm(struct device *dev, struct device_attribute *attr, 1044 const char *buf, size_t count) 1045{ 1046 struct i2c_client *client = to_i2c_client(dev); 1047 struct w83795_data *data = i2c_get_clientdata(client); 1048 struct sensor_device_attribute_2 *sensor_attr = 1049 to_sensor_dev_attr_2(attr); 1050 int nr = sensor_attr->nr; 1051 int index = sensor_attr->index; 1052 unsigned long val; 1053 u8 tmp; 1054 1055 if (strict_strtoul(buf, 10, &val) < 0) 1056 return -EINVAL; 1057 val /= 1000; 1058 1059 mutex_lock(&data->update_lock); 1060 switch (nr) { 1061 case TEMP_PWM_TTTI: 1062 val = SENSORS_LIMIT(val, 0, 0x7f); 1063 w83795_write(client, W83795_REG_TTTI(index), val); 1064 break; 1065 case TEMP_PWM_CTFS: 1066 val = SENSORS_LIMIT(val, 0, 0x7f); 1067 w83795_write(client, W83795_REG_CTFS(index), val); 1068 break; 1069 case TEMP_PWM_HCT: 1070 val = SENSORS_LIMIT(val, 0, 0x0f); 1071 tmp = w83795_read(client, W83795_REG_HT(index)); 1072 tmp &= 0x0f; 1073 tmp |= (val << 4) & 0xf0; 1074 w83795_write(client, W83795_REG_HT(index), tmp); 1075 break; 1076 case TEMP_PWM_HOT: 1077 val = SENSORS_LIMIT(val, 0, 0x0f); 1078 tmp = w83795_read(client, W83795_REG_HT(index)); 1079 tmp &= 0xf0; 1080 tmp |= val & 0x0f; 1081 w83795_write(client, W83795_REG_HT(index), tmp); 1082 break; 1083 } 1084 data->pwm_temp[index][nr] = val; 1085 mutex_unlock(&data->update_lock); 1086 1087 return count; 1088} 1089 1090static ssize_t 1091show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1092{ 1093 struct i2c_client *client = to_i2c_client(dev); 1094 struct w83795_data *data = i2c_get_clientdata(client); 1095 struct sensor_device_attribute_2 *sensor_attr = 1096 to_sensor_dev_attr_2(attr); 1097 int nr = sensor_attr->nr; 1098 int index = sensor_attr->index; 1099 1100 return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]); 1101} 1102 1103static ssize_t 1104store_sf4_pwm(struct device *dev, struct device_attribute *attr, 1105 const char *buf, size_t count) 1106{ 1107 struct i2c_client *client = to_i2c_client(dev); 1108 struct w83795_data *data = i2c_get_clientdata(client); 1109 struct sensor_device_attribute_2 *sensor_attr = 1110 to_sensor_dev_attr_2(attr); 1111 int nr = sensor_attr->nr; 1112 int index = sensor_attr->index; 1113 unsigned long val; 1114 1115 if (strict_strtoul(buf, 10, &val) < 0) 1116 return -EINVAL; 1117 1118 mutex_lock(&data->update_lock); 1119 w83795_write(client, W83795_REG_SF4_PWM(index, nr), val); 1120 data->sf4_reg[index][SF4_PWM][nr] = val; 1121 mutex_unlock(&data->update_lock); 1122 1123 return count; 1124} 1125 1126static ssize_t 1127show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf) 1128{ 1129 struct i2c_client *client = to_i2c_client(dev); 1130 struct w83795_data *data = i2c_get_clientdata(client); 1131 struct sensor_device_attribute_2 *sensor_attr = 1132 to_sensor_dev_attr_2(attr); 1133 int nr = sensor_attr->nr; 1134 int index = sensor_attr->index; 1135 1136 return sprintf(buf, "%u\n", 1137 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000); 1138} 1139 1140static ssize_t 1141store_sf4_temp(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 (strict_strtoul(buf, 10, &val) < 0) 1153 return -EINVAL; 1154 val /= 1000; 1155 1156 mutex_lock(&data->update_lock); 1157 w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val); 1158 data->sf4_reg[index][SF4_TEMP][nr] = val; 1159 mutex_unlock(&data->update_lock); 1160 1161 return count; 1162} 1163 1164 1165static ssize_t 1166show_temp(struct device *dev, struct device_attribute *attr, char *buf) 1167{ 1168 struct sensor_device_attribute_2 *sensor_attr = 1169 to_sensor_dev_attr_2(attr); 1170 int nr = sensor_attr->nr; 1171 int index = sensor_attr->index; 1172 struct w83795_data *data = w83795_update_device(dev); 1173 long temp = temp_from_reg(data->temp[index][nr] & 0x7f); 1174 1175 if (TEMP_READ == nr) 1176 temp += ((data->temp_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03) 1177 * 250; 1178 if (data->temp[index][nr] & 0x80) 1179 temp = -temp; 1180 return sprintf(buf, "%ld\n", temp); 1181} 1182 1183static ssize_t 1184store_temp(struct device *dev, struct device_attribute *attr, 1185 const char *buf, size_t count) 1186{ 1187 struct sensor_device_attribute_2 *sensor_attr = 1188 to_sensor_dev_attr_2(attr); 1189 int nr = sensor_attr->nr; 1190 int index = sensor_attr->index; 1191 struct i2c_client *client = to_i2c_client(dev); 1192 struct w83795_data *data = i2c_get_clientdata(client); 1193 long tmp; 1194 1195 if (strict_strtol(buf, 10, &tmp) < 0) 1196 return -EINVAL; 1197 1198 mutex_lock(&data->update_lock); 1199 data->temp[index][nr] = temp_to_reg(tmp, -128, 127); 1200 w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]); 1201 mutex_unlock(&data->update_lock); 1202 return count; 1203} 1204 1205 1206static ssize_t 1207show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf) 1208{ 1209 struct i2c_client *client = to_i2c_client(dev); 1210 struct w83795_data *data = i2c_get_clientdata(client); 1211 struct sensor_device_attribute_2 *sensor_attr = 1212 to_sensor_dev_attr_2(attr); 1213 int index = sensor_attr->index; 1214 u8 tmp; 1215 1216 if (data->enable_dts == 0) 1217 return sprintf(buf, "%d\n", 0); 1218 1219 if ((data->has_dts >> index) & 0x01) { 1220 if (data->enable_dts & 2) 1221 tmp = 5; 1222 else 1223 tmp = 6; 1224 } else { 1225 tmp = 0; 1226 } 1227 1228 return sprintf(buf, "%d\n", tmp); 1229} 1230 1231static ssize_t 1232show_dts(struct device *dev, struct device_attribute *attr, char *buf) 1233{ 1234 struct sensor_device_attribute_2 *sensor_attr = 1235 to_sensor_dev_attr_2(attr); 1236 int index = sensor_attr->index; 1237 struct w83795_data *data = w83795_update_device(dev); 1238 long temp = temp_from_reg(data->dts[index] & 0x7f); 1239 1240 temp += ((data->dts_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03) * 250; 1241 if (data->dts[index] & 0x80) 1242 temp = -temp; 1243 return sprintf(buf, "%ld\n", temp); 1244} 1245 1246static ssize_t 1247show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf) 1248{ 1249 struct sensor_device_attribute_2 *sensor_attr = 1250 to_sensor_dev_attr_2(attr); 1251 int nr = sensor_attr->nr; 1252 struct i2c_client *client = to_i2c_client(dev); 1253 struct w83795_data *data = i2c_get_clientdata(client); 1254 long temp = temp_from_reg(data->dts_ext[nr] & 0x7f); 1255 1256 if (data->dts_ext[nr] & 0x80) 1257 temp = -temp; 1258 return sprintf(buf, "%ld\n", temp); 1259} 1260 1261static ssize_t 1262store_dts_ext(struct device *dev, struct device_attribute *attr, 1263 const char *buf, size_t count) 1264{ 1265 struct sensor_device_attribute_2 *sensor_attr = 1266 to_sensor_dev_attr_2(attr); 1267 int nr = sensor_attr->nr; 1268 struct i2c_client *client = to_i2c_client(dev); 1269 struct w83795_data *data = i2c_get_clientdata(client); 1270 long tmp; 1271 1272 if (strict_strtol(buf, 10, &tmp) < 0) 1273 return -EINVAL; 1274 1275 mutex_lock(&data->update_lock); 1276 data->dts_ext[nr] = temp_to_reg(tmp, -128, 127); 1277 w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]); 1278 mutex_unlock(&data->update_lock); 1279 return count; 1280} 1281 1282 1283/* 1284 Type 3: Thermal diode 1285 Type 4: Thermistor 1286 1287 Temp5-6, default TR 1288 Temp1-4, default TD 1289*/ 1290 1291static ssize_t 1292show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf) 1293{ 1294 struct i2c_client *client = to_i2c_client(dev); 1295 struct w83795_data *data = i2c_get_clientdata(client); 1296 struct sensor_device_attribute_2 *sensor_attr = 1297 to_sensor_dev_attr_2(attr); 1298 int index = sensor_attr->index; 1299 u8 tmp; 1300 1301 if (data->has_temp >> index & 0x01) { 1302 if (data->temp_mode >> index & 0x01) 1303 tmp = 3; 1304 else 1305 tmp = 4; 1306 } else { 1307 tmp = 0; 1308 } 1309 1310 return sprintf(buf, "%d\n", tmp); 1311} 1312 1313static ssize_t 1314store_temp_mode(struct device *dev, struct device_attribute *attr, 1315 const char *buf, size_t count) 1316{ 1317 struct i2c_client *client = to_i2c_client(dev); 1318 struct w83795_data *data = i2c_get_clientdata(client); 1319 struct sensor_device_attribute_2 *sensor_attr = 1320 to_sensor_dev_attr_2(attr); 1321 int index = sensor_attr->index; 1322 unsigned long val; 1323 u8 tmp; 1324 u32 mask; 1325 1326 if (strict_strtoul(buf, 10, &val) < 0) 1327 return -EINVAL; 1328 if ((val != 4) && (val != 3)) 1329 return -EINVAL; 1330 if ((index > 3) && (val == 3)) 1331 return -EINVAL; 1332 1333 mutex_lock(&data->update_lock); 1334 if (val == 3) { 1335 val = TEMP_CTRL_TD; 1336 data->has_temp |= 1 << index; 1337 data->temp_mode |= 1 << index; 1338 } else if (val == 4) { 1339 val = TEMP_CTRL_TR; 1340 data->has_temp |= 1 << index; 1341 tmp = 1 << index; 1342 data->temp_mode &= ~tmp; 1343 } 1344 1345 if (index > 3) 1346 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1); 1347 else 1348 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 1349 1350 mask = 0x03 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_SHIFT]; 1351 tmp &= ~mask; 1352 tmp |= W83795_REG_TEMP_CTRL[index][val]; 1353 1354 mask = 1 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_HASIN_SHIFT]; 1355 data->has_in &= ~mask; 1356 1357 if (index > 3) 1358 w83795_write(client, W83795_REG_TEMP_CTRL1, tmp); 1359 else 1360 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp); 1361 1362 mutex_unlock(&data->update_lock); 1363 return count; 1364} 1365 1366 1367/* show/store VIN */ 1368static ssize_t 1369show_in(struct device *dev, struct device_attribute *attr, char *buf) 1370{ 1371 struct sensor_device_attribute_2 *sensor_attr = 1372 to_sensor_dev_attr_2(attr); 1373 int nr = sensor_attr->nr; 1374 int index = sensor_attr->index; 1375 struct w83795_data *data = w83795_update_device(dev); 1376 u16 val = data->in[index][nr]; 1377 u8 lsb_idx; 1378 1379 switch (nr) { 1380 case IN_READ: 1381 /* calculate this value again by sensors as sensors3.conf */ 1382 if ((index >= 17) && 1383 !((data->has_gain >> (index - 17)) & 1)) 1384 val *= 8; 1385 break; 1386 case IN_MAX: 1387 case IN_LOW: 1388 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1389 val <<= 2; 1390 val |= (data->in_lsb[lsb_idx][nr] >> 1391 IN_LSB_SHIFT_IDX[lsb_idx][IN_LSB_SHIFT]) & 0x03; 1392 if ((index >= 17) && 1393 !((data->has_gain >> (index - 17)) & 1)) 1394 val *= 8; 1395 break; 1396 } 1397 val = in_from_reg(index, val); 1398 1399 return sprintf(buf, "%d\n", val); 1400} 1401 1402static ssize_t 1403store_in(struct device *dev, struct device_attribute *attr, 1404 const char *buf, size_t count) 1405{ 1406 struct sensor_device_attribute_2 *sensor_attr = 1407 to_sensor_dev_attr_2(attr); 1408 int nr = sensor_attr->nr; 1409 int index = sensor_attr->index; 1410 struct i2c_client *client = to_i2c_client(dev); 1411 struct w83795_data *data = i2c_get_clientdata(client); 1412 unsigned long val; 1413 u8 tmp; 1414 u8 lsb_idx; 1415 1416 if (strict_strtoul(buf, 10, &val) < 0) 1417 return -EINVAL; 1418 val = in_to_reg(index, val); 1419 1420 if ((index >= 17) && 1421 !((data->has_gain >> (index - 17)) & 1)) 1422 val /= 8; 1423 val = SENSORS_LIMIT(val, 0, 0x3FF); 1424 mutex_lock(&data->update_lock); 1425 1426 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1427 tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr)); 1428 tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]); 1429 tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]; 1430 w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp); 1431 data->in_lsb[lsb_idx][nr] = tmp; 1432 1433 tmp = (val >> 2) & 0xff; 1434 w83795_write(client, W83795_REG_IN[index][nr], tmp); 1435 data->in[index][nr] = tmp; 1436 1437 mutex_unlock(&data->update_lock); 1438 return count; 1439} 1440 1441 1442static ssize_t 1443show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf) 1444{ 1445 struct sensor_device_attribute_2 *sensor_attr = 1446 to_sensor_dev_attr_2(attr); 1447 int nr = sensor_attr->nr; 1448 struct i2c_client *client = to_i2c_client(dev); 1449 struct w83795_data *data = i2c_get_clientdata(client); 1450 u16 val = data->setup_pwm[nr]; 1451 1452 switch (nr) { 1453 case SETUP_PWM_UPTIME: 1454 case SETUP_PWM_DOWNTIME: 1455 val = time_from_reg(val); 1456 break; 1457 } 1458 1459 return sprintf(buf, "%d\n", val); 1460} 1461 1462static ssize_t 1463store_sf_setup(struct device *dev, struct device_attribute *attr, 1464 const char *buf, size_t count) 1465{ 1466 struct sensor_device_attribute_2 *sensor_attr = 1467 to_sensor_dev_attr_2(attr); 1468 int nr = sensor_attr->nr; 1469 struct i2c_client *client = to_i2c_client(dev); 1470 struct w83795_data *data = i2c_get_clientdata(client); 1471 unsigned long val; 1472 1473 if (strict_strtoul(buf, 10, &val) < 0) 1474 return -EINVAL; 1475 1476 switch (nr) { 1477 case SETUP_PWM_DEFAULT: 1478 val = SENSORS_LIMIT(val, 0, 0xff); 1479 break; 1480 case SETUP_PWM_UPTIME: 1481 case SETUP_PWM_DOWNTIME: 1482 val = time_to_reg(val); 1483 if (val == 0) 1484 return -EINVAL; 1485 break; 1486 } 1487 1488 mutex_lock(&data->update_lock); 1489 data->setup_pwm[nr] = val; 1490 w83795_write(client, W83795_REG_SETUP_PWM(nr), val); 1491 mutex_unlock(&data->update_lock); 1492 return count; 1493} 1494 1495 1496#define NOT_USED -1 1497 1498/* Don't change the attribute order, _max and _min are accessed by index 1499 * somewhere else in the code */ 1500#define SENSOR_ATTR_IN(index) { \ 1501 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ 1502 IN_READ, index), \ 1503 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \ 1504 store_in, IN_MAX, index), \ 1505 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \ 1506 store_in, IN_LOW, index), \ 1507 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \ 1508 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \ 1509 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \ 1510 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1511 index + ((index > 14) ? 1 : 0)) } 1512 1513#define SENSOR_ATTR_FAN(index) { \ 1514 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ 1515 NULL, FAN_INPUT, index - 1), \ 1516 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \ 1517 show_fan, store_fan_min, FAN_MIN, index - 1), \ 1518 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \ 1519 NULL, ALARM_STATUS, index + 31), \ 1520 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \ 1521 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) } 1522 1523#define SENSOR_ATTR_PWM(index) { \ 1524 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \ 1525 store_pwm, PWM_OUTPUT, index - 1), \ 1526 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \ 1527 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \ 1528 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \ 1529 show_pwm, store_pwm, PWM_START, index - 1), \ 1530 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \ 1531 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \ 1532 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \ 1533 show_pwm, store_pwm, PWM_FREQ, index - 1), \ 1534 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \ 1535 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \ 1536 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \ 1537 show_fanin, store_fanin, FANIN_TARGET, index - 1) } 1538 1539#define SENSOR_ATTR_DTS(index) { \ 1540 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \ 1541 show_dts_mode, NULL, NOT_USED, index - 7), \ 1542 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \ 1543 NULL, NOT_USED, index - 7), \ 1544 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \ 1545 store_dts_ext, DTS_CRIT, NOT_USED), \ 1546 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1547 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \ 1548 SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_dts_ext, \ 1549 store_dts_ext, DTS_WARN, NOT_USED), \ 1550 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR, \ 1551 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \ 1552 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1553 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \ 1554 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1555 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) } 1556 1557#define SENSOR_ATTR_TEMP(index) { \ 1558 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR, \ 1559 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ 1560 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \ 1561 NULL, TEMP_READ, index - 1), \ 1562 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \ 1563 store_temp, TEMP_CRIT, index - 1), \ 1564 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1565 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \ 1566 SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \ 1567 store_temp, TEMP_WARN, index - 1), \ 1568 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR, \ 1569 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \ 1570 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1571 show_alarm_beep, NULL, ALARM_STATUS, \ 1572 index + (index > 4 ? 11 : 17)), \ 1573 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1574 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1575 index + (index > 4 ? 11 : 17)), \ 1576 SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO, \ 1577 show_temp_src, store_temp_src, NOT_USED, index - 1), \ 1578 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \ 1579 show_temp_pwm_enable, store_temp_pwm_enable, \ 1580 TEMP_PWM_ENABLE, index - 1), \ 1581 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \ 1582 show_temp_pwm_enable, store_temp_pwm_enable, \ 1583 TEMP_PWM_FAN_MAP, index - 1), \ 1584 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \ 1585 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \ 1586 SENSOR_ATTR_2(temp##index##_crit, S_IWUSR | S_IRUGO, \ 1587 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \ 1588 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IWUSR | S_IRUGO, \ 1589 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \ 1590 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \ 1591 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \ 1592 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \ 1593 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \ 1594 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \ 1595 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \ 1596 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \ 1597 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \ 1598 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \ 1599 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \ 1600 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \ 1601 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \ 1602 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \ 1603 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \ 1604 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \ 1605 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \ 1606 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\ 1607 show_sf4_temp, store_sf4_temp, 0, index - 1), \ 1608 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\ 1609 show_sf4_temp, store_sf4_temp, 1, index - 1), \ 1610 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\ 1611 show_sf4_temp, store_sf4_temp, 2, index - 1), \ 1612 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\ 1613 show_sf4_temp, store_sf4_temp, 3, index - 1), \ 1614 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\ 1615 show_sf4_temp, store_sf4_temp, 4, index - 1), \ 1616 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\ 1617 show_sf4_temp, store_sf4_temp, 5, index - 1), \ 1618 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\ 1619 show_sf4_temp, store_sf4_temp, 6, index - 1) } 1620 1621 1622static struct sensor_device_attribute_2 w83795_in[][5] = { 1623 SENSOR_ATTR_IN(0), 1624 SENSOR_ATTR_IN(1), 1625 SENSOR_ATTR_IN(2), 1626 SENSOR_ATTR_IN(3), 1627 SENSOR_ATTR_IN(4), 1628 SENSOR_ATTR_IN(5), 1629 SENSOR_ATTR_IN(6), 1630 SENSOR_ATTR_IN(7), 1631 SENSOR_ATTR_IN(8), 1632 SENSOR_ATTR_IN(9), 1633 SENSOR_ATTR_IN(10), 1634 SENSOR_ATTR_IN(11), 1635 SENSOR_ATTR_IN(12), 1636 SENSOR_ATTR_IN(13), 1637 SENSOR_ATTR_IN(14), 1638 SENSOR_ATTR_IN(15), 1639 SENSOR_ATTR_IN(16), 1640 SENSOR_ATTR_IN(17), 1641 SENSOR_ATTR_IN(18), 1642 SENSOR_ATTR_IN(19), 1643 SENSOR_ATTR_IN(20), 1644}; 1645 1646static const struct sensor_device_attribute_2 w83795_fan[][4] = { 1647 SENSOR_ATTR_FAN(1), 1648 SENSOR_ATTR_FAN(2), 1649 SENSOR_ATTR_FAN(3), 1650 SENSOR_ATTR_FAN(4), 1651 SENSOR_ATTR_FAN(5), 1652 SENSOR_ATTR_FAN(6), 1653 SENSOR_ATTR_FAN(7), 1654 SENSOR_ATTR_FAN(8), 1655 SENSOR_ATTR_FAN(9), 1656 SENSOR_ATTR_FAN(10), 1657 SENSOR_ATTR_FAN(11), 1658 SENSOR_ATTR_FAN(12), 1659 SENSOR_ATTR_FAN(13), 1660 SENSOR_ATTR_FAN(14), 1661}; 1662 1663static const struct sensor_device_attribute_2 w83795_temp[][29] = { 1664 SENSOR_ATTR_TEMP(1), 1665 SENSOR_ATTR_TEMP(2), 1666 SENSOR_ATTR_TEMP(3), 1667 SENSOR_ATTR_TEMP(4), 1668 SENSOR_ATTR_TEMP(5), 1669 SENSOR_ATTR_TEMP(6), 1670}; 1671 1672static const struct sensor_device_attribute_2 w83795_dts[][8] = { 1673 SENSOR_ATTR_DTS(7), 1674 SENSOR_ATTR_DTS(8), 1675 SENSOR_ATTR_DTS(9), 1676 SENSOR_ATTR_DTS(10), 1677 SENSOR_ATTR_DTS(11), 1678 SENSOR_ATTR_DTS(12), 1679 SENSOR_ATTR_DTS(13), 1680 SENSOR_ATTR_DTS(14), 1681}; 1682 1683static const struct sensor_device_attribute_2 w83795_pwm[][7] = { 1684 SENSOR_ATTR_PWM(1), 1685 SENSOR_ATTR_PWM(2), 1686 SENSOR_ATTR_PWM(3), 1687 SENSOR_ATTR_PWM(4), 1688 SENSOR_ATTR_PWM(5), 1689 SENSOR_ATTR_PWM(6), 1690 SENSOR_ATTR_PWM(7), 1691 SENSOR_ATTR_PWM(8), 1692}; 1693 1694static const struct sensor_device_attribute_2 sda_single_files[] = { 1695 SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep, 1696 store_chassis_clear, ALARM_STATUS, 46), 1697 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable, 1698 store_beep_enable, NOT_USED, NOT_USED), 1699 SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin, 1700 store_fanin, FANIN_TOL, NOT_USED), 1701 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup, 1702 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED), 1703 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup, 1704 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED), 1705 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup, 1706 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED), 1707}; 1708 1709/* 1710 * Driver interface 1711 */ 1712 1713static void w83795_init_client(struct i2c_client *client) 1714{ 1715 struct w83795_data *data = i2c_get_clientdata(client); 1716 static const u16 clkin[4] = { /* in kHz */ 1717 14318, 24000, 33333, 48000 1718 }; 1719 u8 config; 1720 1721 if (reset) 1722 w83795_write(client, W83795_REG_CONFIG, 0x80); 1723 1724 /* Start monitoring if needed */ 1725 config = w83795_read(client, W83795_REG_CONFIG); 1726 if (!(config & W83795_REG_CONFIG_START)) { 1727 dev_info(&client->dev, "Enabling monitoring operations\n"); 1728 w83795_write(client, W83795_REG_CONFIG, 1729 config | W83795_REG_CONFIG_START); 1730 } 1731 1732 data->clkin = clkin[(config >> 3) & 0x3]; 1733 dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin); 1734} 1735 1736static int w83795_get_device_id(struct i2c_client *client) 1737{ 1738 int device_id; 1739 1740 device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID); 1741 1742 /* Special case for rev. A chips; can't be checked first because later 1743 revisions emulate this for compatibility */ 1744 if (device_id < 0 || (device_id & 0xf0) != 0x50) { 1745 int alt_id; 1746 1747 alt_id = i2c_smbus_read_byte_data(client, 1748 W83795_REG_DEVICEID_A); 1749 if (alt_id == 0x50) 1750 device_id = alt_id; 1751 } 1752 1753 return device_id; 1754} 1755 1756/* Return 0 if detection is successful, -ENODEV otherwise */ 1757static int w83795_detect(struct i2c_client *client, 1758 struct i2c_board_info *info) 1759{ 1760 int bank, vendor_id, device_id, expected, i2c_addr, config; 1761 struct i2c_adapter *adapter = client->adapter; 1762 unsigned short address = client->addr; 1763 const char *chip_name; 1764 1765 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1766 return -ENODEV; 1767 bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 1768 if (bank < 0 || (bank & 0x7c)) { 1769 dev_dbg(&adapter->dev, 1770 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1771 address, "bank"); 1772 return -ENODEV; 1773 } 1774 1775 /* Check Nuvoton vendor ID */ 1776 vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID); 1777 expected = bank & 0x80 ? 0x5c : 0xa3; 1778 if (vendor_id != expected) { 1779 dev_dbg(&adapter->dev, 1780 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1781 address, "vendor id"); 1782 return -ENODEV; 1783 } 1784 1785 /* Check device ID */ 1786 device_id = w83795_get_device_id(client) | 1787 (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8); 1788 if ((device_id >> 4) != 0x795) { 1789 dev_dbg(&adapter->dev, 1790 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1791 address, "device id\n"); 1792 return -ENODEV; 1793 } 1794 1795 /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR 1796 should match */ 1797 if ((bank & 0x07) == 0) { 1798 i2c_addr = i2c_smbus_read_byte_data(client, 1799 W83795_REG_I2C_ADDR); 1800 if ((i2c_addr & 0x7f) != address) { 1801 dev_dbg(&adapter->dev, 1802 "w83795: Detection failed at addr 0x%02hx, " 1803 "check %s\n", address, "i2c addr"); 1804 return -ENODEV; 1805 } 1806 } 1807 1808 /* Check 795 chip type: 795G or 795ADG 1809 Usually we don't write to chips during detection, but here we don't 1810 quite have the choice; hopefully it's OK, we are about to return 1811 success anyway */ 1812 if ((bank & 0x07) != 0) 1813 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, 1814 bank & ~0x07); 1815 config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG); 1816 if (config & W83795_REG_CONFIG_CONFIG48) 1817 chip_name = "w83795adg"; 1818 else 1819 chip_name = "w83795g"; 1820 1821 strlcpy(info->type, chip_name, I2C_NAME_SIZE); 1822 dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name, 1823 'A' + (device_id & 0xf), address); 1824 1825 return 0; 1826} 1827 1828static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, 1829 const struct device_attribute *)) 1830{ 1831 struct w83795_data *data = dev_get_drvdata(dev); 1832 int err, i, j; 1833 1834 for (i = 0; i < ARRAY_SIZE(w83795_in); i++) { 1835 if (!(data->has_in & (1 << i))) 1836 continue; 1837 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) { 1838 err = fn(dev, &w83795_in[i][j].dev_attr); 1839 if (err) 1840 return err; 1841 } 1842 } 1843 1844 for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) { 1845 if (!(data->has_fan & (1 << i))) 1846 continue; 1847 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) { 1848 err = fn(dev, &w83795_fan[i][j].dev_attr); 1849 if (err) 1850 return err; 1851 } 1852 } 1853 1854 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) { 1855 err = fn(dev, &sda_single_files[i].dev_attr); 1856 if (err) 1857 return err; 1858 } 1859 1860 for (i = 0; i < data->has_pwm; i++) { 1861 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) { 1862 err = fn(dev, &w83795_pwm[i][j].dev_attr); 1863 if (err) 1864 return err; 1865 } 1866 } 1867 1868 for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) { 1869 if (!(data->has_temp & (1 << i))) 1870 continue; 1871 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) { 1872 err = fn(dev, &w83795_temp[i][j].dev_attr); 1873 if (err) 1874 return err; 1875 } 1876 } 1877 1878 if (data->enable_dts != 0) { 1879 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) { 1880 if (!(data->has_dts & (1 << i))) 1881 continue; 1882 for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) { 1883 err = fn(dev, &w83795_dts[i][j].dev_attr); 1884 if (err) 1885 return err; 1886 } 1887 } 1888 } 1889 1890 return 0; 1891} 1892 1893/* We need a wrapper that fits in w83795_handle_files */ 1894static int device_remove_file_wrapper(struct device *dev, 1895 const struct device_attribute *attr) 1896{ 1897 device_remove_file(dev, attr); 1898 return 0; 1899} 1900 1901static void w83795_check_dynamic_in_limits(struct i2c_client *client) 1902{ 1903 struct w83795_data *data = i2c_get_clientdata(client); 1904 u8 vid_ctl; 1905 int i, err_max, err_min; 1906 1907 vid_ctl = w83795_read(client, W83795_REG_VID_CTRL); 1908 1909 /* Return immediately if VRM isn't configured */ 1910 if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07) 1911 return; 1912 1913 data->has_dyn_in = (vid_ctl >> 3) & 0x07; 1914 for (i = 0; i < 2; i++) { 1915 if (!(data->has_dyn_in & (1 << i))) 1916 continue; 1917 1918 /* Voltage limits in dynamic mode, switch to read-only */ 1919 err_max = sysfs_chmod_file(&client->dev.kobj, 1920 &w83795_in[i][2].dev_attr.attr, 1921 S_IRUGO); 1922 err_min = sysfs_chmod_file(&client->dev.kobj, 1923 &w83795_in[i][3].dev_attr.attr, 1924 S_IRUGO); 1925 if (err_max || err_min) 1926 dev_warn(&client->dev, "Failed to set in%d limits " 1927 "read-only (%d, %d)\n", i, err_max, err_min); 1928 else 1929 dev_info(&client->dev, "in%d limits set dynamically " 1930 "from VID\n", i); 1931 } 1932} 1933 1934/* Check pins that can be used for either temperature or voltage monitoring */ 1935static void w83795_apply_temp_config(struct w83795_data *data, u8 config, 1936 int temp_chan, int in_chan) 1937{ 1938 /* config is a 2-bit value */ 1939 switch (config) { 1940 case 0x2: /* Voltage monitoring */ 1941 data->has_in |= 1 << in_chan; 1942 break; 1943 case 0x1: /* Thermal diode */ 1944 if (temp_chan >= 4) 1945 break; 1946 data->temp_mode |= 1 << temp_chan; 1947 /* fall through */ 1948 case 0x3: /* Thermistor */ 1949 data->has_temp |= 1 << temp_chan; 1950 break; 1951 } 1952} 1953 1954static int w83795_probe(struct i2c_client *client, 1955 const struct i2c_device_id *id) 1956{ 1957 int i; 1958 u8 tmp; 1959 struct device *dev = &client->dev; 1960 struct w83795_data *data; 1961 int err; 1962 1963 data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL); 1964 if (!data) { 1965 err = -ENOMEM; 1966 goto exit; 1967 } 1968 1969 i2c_set_clientdata(client, data); 1970 data->chip_type = id->driver_data; 1971 data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 1972 mutex_init(&data->update_lock); 1973 1974 /* Initialize the chip */ 1975 w83795_init_client(client); 1976 1977 /* Check which voltages and fans are present */ 1978 data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1) 1979 | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8); 1980 data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1) 1981 | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8); 1982 1983 /* Check which analog temperatures and extra voltages are present */ 1984 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1); 1985 if (tmp & 0x20) 1986 data->enable_dts = 1; 1987 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16); 1988 w83795_apply_temp_config(data, tmp & 0x3, 4, 15); 1989 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 1990 w83795_apply_temp_config(data, tmp >> 6, 3, 20); 1991 w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19); 1992 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18); 1993 w83795_apply_temp_config(data, tmp & 0x3, 0, 17); 1994 1995 /* Check DTS enable status */ 1996 if (data->enable_dts) { 1997 if (1 & w83795_read(client, W83795_REG_DTSC)) 1998 data->enable_dts |= 2; 1999 data->has_dts = w83795_read(client, W83795_REG_DTSE); 2000 } 2001 2002 /* First update the voltages measured value and limits */ 2003 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 2004 if (!(data->has_in & (1 << i))) 2005 continue; 2006 data->in[i][IN_MAX] = 2007 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 2008 data->in[i][IN_LOW] = 2009 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 2010 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2; 2011 tmp |= (w83795_read(client, W83795_REG_VRLSB) 2012 >> VRLSB_SHIFT) & 0x03; 2013 data->in[i][IN_READ] = tmp; 2014 } 2015 for (i = 0; i < IN_LSB_REG_NUM; i++) { 2016 data->in_lsb[i][IN_MAX] = 2017 w83795_read(client, IN_LSB_REG(i, IN_MAX)); 2018 data->in_lsb[i][IN_LOW] = 2019 w83795_read(client, IN_LSB_REG(i, IN_LOW)); 2020 } 2021 data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f; 2022 2023 /* First update fan and limits */ 2024 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 2025 if (!(data->has_fan & (1 << i))) 2026 continue; 2027 data->fan_min[i] = 2028 w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4; 2029 data->fan_min[i] |= 2030 (w83795_read(client, W83795_REG_FAN_MIN_LSB(i)) >> 2031 W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F; 2032 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4; 2033 data->fan[i] |= 2034 (w83795_read(client, W83795_REG_VRLSB) >> 4) & 0x0F; 2035 } 2036 2037 /* temperature and limits */ 2038 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 2039 if (!(data->has_temp & (1 << i))) 2040 continue; 2041 data->temp[i][TEMP_CRIT] = 2042 w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT]); 2043 data->temp[i][TEMP_CRIT_HYST] = 2044 w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT_HYST]); 2045 data->temp[i][TEMP_WARN] = 2046 w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN]); 2047 data->temp[i][TEMP_WARN_HYST] = 2048 w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN_HYST]); 2049 data->temp[i][TEMP_READ] = 2050 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]); 2051 data->temp_read_vrlsb[i] = 2052 w83795_read(client, W83795_REG_VRLSB); 2053 } 2054 2055 /* dts temperature and limits */ 2056 if (data->enable_dts != 0) { 2057 data->dts_ext[DTS_CRIT] = 2058 w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT)); 2059 data->dts_ext[DTS_CRIT_HYST] = 2060 w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT_HYST)); 2061 data->dts_ext[DTS_WARN] = 2062 w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN)); 2063 data->dts_ext[DTS_WARN_HYST] = 2064 w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN_HYST)); 2065 for (i = 0; i < ARRAY_SIZE(data->dts); i++) { 2066 if (!(data->has_dts & (1 << i))) 2067 continue; 2068 data->dts[i] = w83795_read(client, W83795_REG_DTS(i)); 2069 data->dts_read_vrlsb[i] = 2070 w83795_read(client, W83795_REG_VRLSB); 2071 } 2072 } 2073 2074 /* First update temp source selction */ 2075 for (i = 0; i < 3; i++) 2076 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i)); 2077 2078 /* pwm and smart fan */ 2079 if (data->chip_type == w83795g) 2080 data->has_pwm = 8; 2081 else 2082 data->has_pwm = 2; 2083 data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1); 2084 data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2); 2085 for (i = 0; i < W83795_REG_TEMP_NUM; i++) 2086 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i)); 2087 data->pwm_fomc = w83795_read(client, W83795_REG_FOMC); 2088 for (i = 0; i < data->has_pwm; i++) { 2089 for (tmp = 0; tmp < 5; tmp++) { 2090 data->pwm[i][tmp] = 2091 w83795_read(client, W83795_REG_PWM(i, tmp)); 2092 } 2093 } 2094 for (i = 0; i < 8; i++) { 2095 data->target_speed[i] = 2096 w83795_read(client, W83795_REG_FTSH(i)) << 4; 2097 data->target_speed[i] |= 2098 w83795_read(client, W83795_REG_FTSL(i)) >> 4; 2099 } 2100 data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f; 2101 2102 for (i = 0; i < W83795_REG_TEMP_NUM; i++) { 2103 data->pwm_temp[i][TEMP_PWM_TTTI] = 2104 w83795_read(client, W83795_REG_TTTI(i)) & 0x7f; 2105 data->pwm_temp[i][TEMP_PWM_CTFS] = 2106 w83795_read(client, W83795_REG_CTFS(i)); 2107 tmp = w83795_read(client, W83795_REG_HT(i)); 2108 data->pwm_temp[i][TEMP_PWM_HCT] = (tmp >> 4) & 0x0f; 2109 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f; 2110 } 2111 for (i = 0; i < W83795_REG_TEMP_NUM; i++) { 2112 for (tmp = 0; tmp < 7; tmp++) { 2113 data->sf4_reg[i][SF4_TEMP][tmp] = 2114 w83795_read(client, 2115 W83795_REG_SF4_TEMP(i, tmp)); 2116 data->sf4_reg[i][SF4_PWM][tmp] = 2117 w83795_read(client, W83795_REG_SF4_PWM(i, tmp)); 2118 } 2119 } 2120 2121 /* Setup PWM Register */ 2122 for (i = 0; i < 3; i++) { 2123 data->setup_pwm[i] = 2124 w83795_read(client, W83795_REG_SETUP_PWM(i)); 2125 } 2126 2127 /* alarm and beep */ 2128 for (i = 0; i < ALARM_BEEP_REG_NUM; i++) { 2129 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i)); 2130 data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i)); 2131 } 2132 data->beep_enable = 2133 (w83795_read(client, W83795_REG_BEEP(5)) >> 7) & 0x01; 2134 2135 err = w83795_handle_files(dev, device_create_file); 2136 if (err) 2137 goto exit_remove; 2138 2139 if (data->chip_type == w83795g) 2140 w83795_check_dynamic_in_limits(client); 2141 2142 data->hwmon_dev = hwmon_device_register(dev); 2143 if (IS_ERR(data->hwmon_dev)) { 2144 err = PTR_ERR(data->hwmon_dev); 2145 goto exit_remove; 2146 } 2147 2148 return 0; 2149 2150exit_remove: 2151 w83795_handle_files(dev, device_remove_file_wrapper); 2152 kfree(data); 2153exit: 2154 return err; 2155} 2156 2157static int w83795_remove(struct i2c_client *client) 2158{ 2159 struct w83795_data *data = i2c_get_clientdata(client); 2160 2161 hwmon_device_unregister(data->hwmon_dev); 2162 w83795_handle_files(&client->dev, device_remove_file_wrapper); 2163 kfree(data); 2164 2165 return 0; 2166} 2167 2168 2169static const struct i2c_device_id w83795_id[] = { 2170 { "w83795g", w83795g }, 2171 { "w83795adg", w83795adg }, 2172 { } 2173}; 2174MODULE_DEVICE_TABLE(i2c, w83795_id); 2175 2176static struct i2c_driver w83795_driver = { 2177 .driver = { 2178 .name = "w83795", 2179 }, 2180 .probe = w83795_probe, 2181 .remove = w83795_remove, 2182 .id_table = w83795_id, 2183 2184 .class = I2C_CLASS_HWMON, 2185 .detect = w83795_detect, 2186 .address_list = normal_i2c, 2187}; 2188 2189static int __init sensors_w83795_init(void) 2190{ 2191 return i2c_add_driver(&w83795_driver); 2192} 2193 2194static void __exit sensors_w83795_exit(void) 2195{ 2196 i2c_del_driver(&w83795_driver); 2197} 2198 2199MODULE_AUTHOR("Wei Song"); 2200MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver"); 2201MODULE_LICENSE("GPL"); 2202 2203module_init(sensors_w83795_init); 2204module_exit(sensors_w83795_exit); 2205