1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * w83795.c - Linux kernel driver for hardware monitoring 4 * Copyright (C) 2008 Nuvoton Technology Corp. 5 * Wei Song 6 * Copyright (C) 2010 Jean Delvare <jdelvare@suse.de> 7 * 8 * Supports following chips: 9 * 10 * Chip #vin #fanin #pwm #temp #dts wchipid vendid i2c ISA 11 * w83795g 21 14 8 6 8 0x79 0x5ca3 yes no 12 * w83795adg 18 14 2 6 8 0x79 0x5ca3 yes no 13 */ 14 15 #include <linux/kernel.h> 16 #include <linux/module.h> 17 #include <linux/init.h> 18 #include <linux/slab.h> 19 #include <linux/i2c.h> 20 #include <linux/hwmon.h> 21 #include <linux/hwmon-sysfs.h> 22 #include <linux/err.h> 23 #include <linux/mutex.h> 24 #include <linux/jiffies.h> 25 #include <linux/util_macros.h> 26 27 /* Addresses to scan */ 28 static const unsigned short normal_i2c[] = { 29 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END 30 }; 31 32 33 static bool reset; 34 module_param(reset, bool, 0); 35 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended"); 36 37 38 #define W83795_REG_BANKSEL 0x00 39 #define W83795_REG_VENDORID 0xfd 40 #define W83795_REG_CHIPID 0xfe 41 #define W83795_REG_DEVICEID 0xfb 42 #define W83795_REG_DEVICEID_A 0xff 43 44 #define W83795_REG_I2C_ADDR 0xfc 45 #define W83795_REG_CONFIG 0x01 46 #define W83795_REG_CONFIG_CONFIG48 0x04 47 #define W83795_REG_CONFIG_START 0x01 48 49 /* Multi-Function Pin Ctrl Registers */ 50 #define W83795_REG_VOLT_CTRL1 0x02 51 #define W83795_REG_VOLT_CTRL2 0x03 52 #define W83795_REG_TEMP_CTRL1 0x04 53 #define W83795_REG_TEMP_CTRL2 0x05 54 #define W83795_REG_FANIN_CTRL1 0x06 55 #define W83795_REG_FANIN_CTRL2 0x07 56 #define W83795_REG_VMIGB_CTRL 0x08 57 58 #define TEMP_READ 0 59 #define TEMP_CRIT 1 60 #define TEMP_CRIT_HYST 2 61 #define TEMP_WARN 3 62 #define TEMP_WARN_HYST 4 63 /* 64 * only crit and crit_hyst affect real-time alarm status 65 * current crit crit_hyst warn warn_hyst 66 */ 67 static const u16 W83795_REG_TEMP[][5] = { 68 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */ 69 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */ 70 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */ 71 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */ 72 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */ 73 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */ 74 }; 75 76 #define IN_READ 0 77 #define IN_MAX 1 78 #define IN_LOW 2 79 static const u16 W83795_REG_IN[][3] = { 80 /* Current, HL, LL */ 81 {0x10, 0x70, 0x71}, /* VSEN1 */ 82 {0x11, 0x72, 0x73}, /* VSEN2 */ 83 {0x12, 0x74, 0x75}, /* VSEN3 */ 84 {0x13, 0x76, 0x77}, /* VSEN4 */ 85 {0x14, 0x78, 0x79}, /* VSEN5 */ 86 {0x15, 0x7a, 0x7b}, /* VSEN6 */ 87 {0x16, 0x7c, 0x7d}, /* VSEN7 */ 88 {0x17, 0x7e, 0x7f}, /* VSEN8 */ 89 {0x18, 0x80, 0x81}, /* VSEN9 */ 90 {0x19, 0x82, 0x83}, /* VSEN10 */ 91 {0x1A, 0x84, 0x85}, /* VSEN11 */ 92 {0x1B, 0x86, 0x87}, /* VTT */ 93 {0x1C, 0x88, 0x89}, /* 3VDD */ 94 {0x1D, 0x8a, 0x8b}, /* 3VSB */ 95 {0x1E, 0x8c, 0x8d}, /* VBAT */ 96 {0x1F, 0xa6, 0xa7}, /* VSEN12 */ 97 {0x20, 0xaa, 0xab}, /* VSEN13 */ 98 {0x21, 0x96, 0x97}, /* VSEN14 */ 99 {0x22, 0x9a, 0x9b}, /* VSEN15 */ 100 {0x23, 0x9e, 0x9f}, /* VSEN16 */ 101 {0x24, 0xa2, 0xa3}, /* VSEN17 */ 102 }; 103 #define W83795_REG_VRLSB 0x3C 104 105 static const u8 W83795_REG_IN_HL_LSB[] = { 106 0x8e, /* VSEN1-4 */ 107 0x90, /* VSEN5-8 */ 108 0x92, /* VSEN9-11 */ 109 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */ 110 0xa8, /* VSEN12 */ 111 0xac, /* VSEN13 */ 112 0x98, /* VSEN14 */ 113 0x9c, /* VSEN15 */ 114 0xa0, /* VSEN16 */ 115 0xa4, /* VSEN17 */ 116 }; 117 118 #define IN_LSB_REG(index, type) \ 119 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \ 120 : (W83795_REG_IN_HL_LSB[(index)] + 1)) 121 122 #define IN_LSB_SHIFT 0 123 #define IN_LSB_IDX 1 124 static const u8 IN_LSB_SHIFT_IDX[][2] = { 125 /* High/Low LSB shift, LSB No. */ 126 {0x00, 0x00}, /* VSEN1 */ 127 {0x02, 0x00}, /* VSEN2 */ 128 {0x04, 0x00}, /* VSEN3 */ 129 {0x06, 0x00}, /* VSEN4 */ 130 {0x00, 0x01}, /* VSEN5 */ 131 {0x02, 0x01}, /* VSEN6 */ 132 {0x04, 0x01}, /* VSEN7 */ 133 {0x06, 0x01}, /* VSEN8 */ 134 {0x00, 0x02}, /* VSEN9 */ 135 {0x02, 0x02}, /* VSEN10 */ 136 {0x04, 0x02}, /* VSEN11 */ 137 {0x00, 0x03}, /* VTT */ 138 {0x02, 0x03}, /* 3VDD */ 139 {0x04, 0x03}, /* 3VSB */ 140 {0x06, 0x03}, /* VBAT */ 141 {0x06, 0x04}, /* VSEN12 */ 142 {0x06, 0x05}, /* VSEN13 */ 143 {0x06, 0x06}, /* VSEN14 */ 144 {0x06, 0x07}, /* VSEN15 */ 145 {0x06, 0x08}, /* VSEN16 */ 146 {0x06, 0x09}, /* VSEN17 */ 147 }; 148 149 150 #define W83795_REG_FAN(index) (0x2E + (index)) 151 #define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index)) 152 #define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2) 153 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \ 154 (((index) & 1) ? 4 : 0) 155 156 #define W83795_REG_VID_CTRL 0x6A 157 158 #define W83795_REG_ALARM_CTRL 0x40 159 #define ALARM_CTRL_RTSACS (1 << 7) 160 #define W83795_REG_ALARM(index) (0x41 + (index)) 161 #define W83795_REG_CLR_CHASSIS 0x4D 162 #define W83795_REG_BEEP(index) (0x50 + (index)) 163 164 #define W83795_REG_OVT_CFG 0x58 165 #define OVT_CFG_SEL (1 << 7) 166 167 168 #define W83795_REG_FCMS1 0x201 169 #define W83795_REG_FCMS2 0x208 170 #define W83795_REG_TFMR(index) (0x202 + (index)) 171 #define W83795_REG_FOMC 0x20F 172 173 #define W83795_REG_TSS(index) (0x209 + (index)) 174 175 #define TSS_MAP_RESERVED 0xff 176 static const u8 tss_map[4][6] = { 177 { 0, 1, 2, 3, 4, 5}, 178 { 6, 7, 8, 9, 0, 1}, 179 {10, 11, 12, 13, 2, 3}, 180 { 4, 5, 4, 5, TSS_MAP_RESERVED, TSS_MAP_RESERVED}, 181 }; 182 183 #define PWM_OUTPUT 0 184 #define PWM_FREQ 1 185 #define PWM_START 2 186 #define PWM_NONSTOP 3 187 #define PWM_STOP_TIME 4 188 #define W83795_REG_PWM(index, nr) (0x210 + (nr) * 8 + (index)) 189 190 #define W83795_REG_FTSH(index) (0x240 + (index) * 2) 191 #define W83795_REG_FTSL(index) (0x241 + (index) * 2) 192 #define W83795_REG_TFTS 0x250 193 194 #define TEMP_PWM_TTTI 0 195 #define TEMP_PWM_CTFS 1 196 #define TEMP_PWM_HCT 2 197 #define TEMP_PWM_HOT 3 198 #define W83795_REG_TTTI(index) (0x260 + (index)) 199 #define W83795_REG_CTFS(index) (0x268 + (index)) 200 #define W83795_REG_HT(index) (0x270 + (index)) 201 202 #define SF4_TEMP 0 203 #define SF4_PWM 1 204 #define W83795_REG_SF4_TEMP(temp_num, index) \ 205 (0x280 + 0x10 * (temp_num) + (index)) 206 #define W83795_REG_SF4_PWM(temp_num, index) \ 207 (0x288 + 0x10 * (temp_num) + (index)) 208 209 #define W83795_REG_DTSC 0x301 210 #define W83795_REG_DTSE 0x302 211 #define W83795_REG_DTS(index) (0x26 + (index)) 212 #define W83795_REG_PECI_TBASE(index) (0x320 + (index)) 213 214 #define DTS_CRIT 0 215 #define DTS_CRIT_HYST 1 216 #define DTS_WARN 2 217 #define DTS_WARN_HYST 3 218 #define W83795_REG_DTS_EXT(index) (0xB2 + (index)) 219 220 #define SETUP_PWM_DEFAULT 0 221 #define SETUP_PWM_UPTIME 1 222 #define SETUP_PWM_DOWNTIME 2 223 #define W83795_REG_SETUP_PWM(index) (0x20C + (index)) 224 225 static inline u16 in_from_reg(u8 index, u16 val) 226 { 227 /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */ 228 if (index >= 12 && index <= 14) 229 return val * 6; 230 else 231 return val * 2; 232 } 233 234 static inline u16 in_to_reg(u8 index, u16 val) 235 { 236 if (index >= 12 && index <= 14) 237 return val / 6; 238 else 239 return val / 2; 240 } 241 242 static inline unsigned long fan_from_reg(u16 val) 243 { 244 if ((val == 0xfff) || (val == 0)) 245 return 0; 246 return 1350000UL / val; 247 } 248 249 static inline u16 fan_to_reg(long rpm) 250 { 251 if (rpm <= 0) 252 return 0x0fff; 253 return clamp_val((1350000 + (rpm >> 1)) / rpm, 1, 0xffe); 254 } 255 256 static inline unsigned long time_from_reg(u8 reg) 257 { 258 return reg * 100; 259 } 260 261 static inline u8 time_to_reg(unsigned long val) 262 { 263 return clamp_val((val + 50) / 100, 0, 0xff); 264 } 265 266 static inline long temp_from_reg(s8 reg) 267 { 268 return reg * 1000; 269 } 270 271 static inline s8 temp_to_reg(long val, s8 min, s8 max) 272 { 273 return clamp_val(val / 1000, min, max); 274 } 275 276 static const u16 pwm_freq_cksel0[16] = { 277 1024, 512, 341, 256, 205, 171, 146, 128, 278 85, 64, 32, 16, 8, 4, 2, 1 279 }; 280 281 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin) 282 { 283 unsigned long base_clock; 284 285 if (reg & 0x80) { 286 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 287 return base_clock / ((reg & 0x7f) + 1); 288 } else 289 return pwm_freq_cksel0[reg & 0x0f]; 290 } 291 292 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin) 293 { 294 unsigned long base_clock; 295 u8 reg0, reg1; 296 unsigned long best0, best1; 297 298 /* Best fit for cksel = 0 */ 299 reg0 = find_closest_descending(val, pwm_freq_cksel0, 300 ARRAY_SIZE(pwm_freq_cksel0)); 301 if (val < 375) /* cksel = 1 can't beat this */ 302 return reg0; 303 best0 = pwm_freq_cksel0[reg0]; 304 305 /* Best fit for cksel = 1 */ 306 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 307 reg1 = clamp_val(DIV_ROUND_CLOSEST(base_clock, val), 1, 128); 308 best1 = base_clock / reg1; 309 reg1 = 0x80 | (reg1 - 1); 310 311 /* Choose the closest one */ 312 if (abs(val - best0) > abs(val - best1)) 313 return reg1; 314 else 315 return reg0; 316 } 317 318 enum chip_types {w83795g, w83795adg}; 319 320 struct w83795_data { 321 struct device *hwmon_dev; 322 struct mutex update_lock; 323 unsigned long last_updated; /* In jiffies */ 324 enum chip_types chip_type; 325 326 u8 bank; 327 328 u32 has_in; /* Enable monitor VIN or not */ 329 u8 has_dyn_in; /* Only in2-0 can have this */ 330 u16 in[21][3]; /* Register value, read/high/low */ 331 u8 in_lsb[10][3]; /* LSB Register value, high/low */ 332 u8 has_gain; /* has gain: in17-20 * 8 */ 333 334 u16 has_fan; /* Enable fan14-1 or not */ 335 u16 fan[14]; /* Register value combine */ 336 u16 fan_min[14]; /* Register value combine */ 337 338 u8 has_temp; /* Enable monitor temp6-1 or not */ 339 s8 temp[6][5]; /* current, crit, crit_hyst, warn, warn_hyst */ 340 u8 temp_read_vrlsb[6]; 341 u8 temp_mode; /* Bit vector, 0 = TR, 1 = TD */ 342 u8 temp_src[3]; /* Register value */ 343 344 u8 enable_dts; /* 345 * Enable PECI and SB-TSI, 346 * bit 0: =1 enable, =0 disable, 347 * bit 1: =1 AMD SB-TSI, =0 Intel PECI 348 */ 349 u8 has_dts; /* Enable monitor DTS temp */ 350 s8 dts[8]; /* Register value */ 351 u8 dts_read_vrlsb[8]; /* Register value */ 352 s8 dts_ext[4]; /* Register value */ 353 354 u8 has_pwm; /* 355 * 795g supports 8 pwm, 795adg only supports 2, 356 * no config register, only affected by chip 357 * type 358 */ 359 u8 pwm[8][5]; /* 360 * Register value, output, freq, start, 361 * non stop, stop time 362 */ 363 u16 clkin; /* CLKIN frequency in kHz */ 364 u8 pwm_fcms[2]; /* Register value */ 365 u8 pwm_tfmr[6]; /* Register value */ 366 u8 pwm_fomc; /* Register value */ 367 368 u16 target_speed[8]; /* 369 * Register value, target speed for speed 370 * cruise 371 */ 372 u8 tol_speed; /* tolerance of target speed */ 373 u8 pwm_temp[6][4]; /* TTTI, CTFS, HCT, HOT */ 374 u8 sf4_reg[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */ 375 376 u8 setup_pwm[3]; /* Register value */ 377 378 u8 alarms[6]; /* Register value */ 379 u8 enable_beep; 380 u8 beeps[6]; /* Register value */ 381 382 bool valid; 383 char valid_limits; 384 char valid_pwm_config; 385 }; 386 387 /* 388 * Hardware access 389 * We assume that nobdody can change the bank outside the driver. 390 */ 391 392 /* Must be called with data->update_lock held, except during initialization */ 393 static int w83795_set_bank(struct i2c_client *client, u8 bank) 394 { 395 struct w83795_data *data = i2c_get_clientdata(client); 396 int err; 397 398 /* If the same bank is already set, nothing to do */ 399 if ((data->bank & 0x07) == bank) 400 return 0; 401 402 /* Change to new bank, preserve all other bits */ 403 bank |= data->bank & ~0x07; 404 err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank); 405 if (err < 0) { 406 dev_err(&client->dev, 407 "Failed to set bank to %d, err %d\n", 408 (int)bank, err); 409 return err; 410 } 411 data->bank = bank; 412 413 return 0; 414 } 415 416 /* Must be called with data->update_lock held, except during initialization */ 417 static u8 w83795_read(struct i2c_client *client, u16 reg) 418 { 419 int err; 420 421 err = w83795_set_bank(client, reg >> 8); 422 if (err < 0) 423 return 0x00; /* Arbitrary */ 424 425 err = i2c_smbus_read_byte_data(client, reg & 0xff); 426 if (err < 0) { 427 dev_err(&client->dev, 428 "Failed to read from register 0x%03x, err %d\n", 429 (int)reg, err); 430 return 0x00; /* Arbitrary */ 431 } 432 return err; 433 } 434 435 /* Must be called with data->update_lock held, except during initialization */ 436 static int w83795_write(struct i2c_client *client, u16 reg, u8 value) 437 { 438 int err; 439 440 err = w83795_set_bank(client, reg >> 8); 441 if (err < 0) 442 return err; 443 444 err = i2c_smbus_write_byte_data(client, reg & 0xff, value); 445 if (err < 0) 446 dev_err(&client->dev, 447 "Failed to write to register 0x%03x, err %d\n", 448 (int)reg, err); 449 return err; 450 } 451 452 static void w83795_update_limits(struct i2c_client *client) 453 { 454 struct w83795_data *data = i2c_get_clientdata(client); 455 int i, limit; 456 u8 lsb; 457 458 /* Read the voltage limits */ 459 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 460 if (!(data->has_in & (1 << i))) 461 continue; 462 data->in[i][IN_MAX] = 463 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 464 data->in[i][IN_LOW] = 465 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 466 } 467 for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) { 468 if ((i == 2 && data->chip_type == w83795adg) || 469 (i >= 4 && !(data->has_in & (1 << (i + 11))))) 470 continue; 471 data->in_lsb[i][IN_MAX] = 472 w83795_read(client, IN_LSB_REG(i, IN_MAX)); 473 data->in_lsb[i][IN_LOW] = 474 w83795_read(client, IN_LSB_REG(i, IN_LOW)); 475 } 476 477 /* Read the fan limits */ 478 lsb = 0; /* Silent false gcc warning */ 479 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 480 /* 481 * Each register contains LSB for 2 fans, but we want to 482 * read it only once to save time 483 */ 484 if ((i & 1) == 0 && (data->has_fan & (3 << i))) 485 lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i)); 486 487 if (!(data->has_fan & (1 << i))) 488 continue; 489 data->fan_min[i] = 490 w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4; 491 data->fan_min[i] |= 492 (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F; 493 } 494 495 /* Read the temperature limits */ 496 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 497 if (!(data->has_temp & (1 << i))) 498 continue; 499 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++) 500 data->temp[i][limit] = 501 w83795_read(client, W83795_REG_TEMP[i][limit]); 502 } 503 504 /* Read the DTS limits */ 505 if (data->enable_dts) { 506 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++) 507 data->dts_ext[limit] = 508 w83795_read(client, W83795_REG_DTS_EXT(limit)); 509 } 510 511 /* Read beep settings */ 512 if (data->enable_beep) { 513 for (i = 0; i < ARRAY_SIZE(data->beeps); i++) 514 data->beeps[i] = 515 w83795_read(client, W83795_REG_BEEP(i)); 516 } 517 518 data->valid_limits = 1; 519 } 520 521 static struct w83795_data *w83795_update_pwm_config(struct device *dev) 522 { 523 struct i2c_client *client = to_i2c_client(dev); 524 struct w83795_data *data = i2c_get_clientdata(client); 525 int i, tmp; 526 527 mutex_lock(&data->update_lock); 528 529 if (data->valid_pwm_config) 530 goto END; 531 532 /* Read temperature source selection */ 533 for (i = 0; i < ARRAY_SIZE(data->temp_src); i++) 534 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i)); 535 536 /* Read automatic fan speed control settings */ 537 data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1); 538 data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2); 539 for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++) 540 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i)); 541 data->pwm_fomc = w83795_read(client, W83795_REG_FOMC); 542 for (i = 0; i < data->has_pwm; i++) { 543 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++) 544 data->pwm[i][tmp] = 545 w83795_read(client, W83795_REG_PWM(i, tmp)); 546 } 547 for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) { 548 data->target_speed[i] = 549 w83795_read(client, W83795_REG_FTSH(i)) << 4; 550 data->target_speed[i] |= 551 w83795_read(client, W83795_REG_FTSL(i)) >> 4; 552 } 553 data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f; 554 555 for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) { 556 data->pwm_temp[i][TEMP_PWM_TTTI] = 557 w83795_read(client, W83795_REG_TTTI(i)) & 0x7f; 558 data->pwm_temp[i][TEMP_PWM_CTFS] = 559 w83795_read(client, W83795_REG_CTFS(i)); 560 tmp = w83795_read(client, W83795_REG_HT(i)); 561 data->pwm_temp[i][TEMP_PWM_HCT] = tmp >> 4; 562 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f; 563 } 564 565 /* Read SmartFanIV trip points */ 566 for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) { 567 for (tmp = 0; tmp < 7; tmp++) { 568 data->sf4_reg[i][SF4_TEMP][tmp] = 569 w83795_read(client, 570 W83795_REG_SF4_TEMP(i, tmp)); 571 data->sf4_reg[i][SF4_PWM][tmp] = 572 w83795_read(client, W83795_REG_SF4_PWM(i, tmp)); 573 } 574 } 575 576 /* Read setup PWM */ 577 for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++) 578 data->setup_pwm[i] = 579 w83795_read(client, W83795_REG_SETUP_PWM(i)); 580 581 data->valid_pwm_config = 1; 582 583 END: 584 mutex_unlock(&data->update_lock); 585 return data; 586 } 587 588 static struct w83795_data *w83795_update_device(struct device *dev) 589 { 590 struct i2c_client *client = to_i2c_client(dev); 591 struct w83795_data *data = i2c_get_clientdata(client); 592 u16 tmp; 593 u8 intrusion; 594 int i; 595 596 mutex_lock(&data->update_lock); 597 598 if (!data->valid_limits) 599 w83795_update_limits(client); 600 601 if (!(time_after(jiffies, data->last_updated + HZ * 2) 602 || !data->valid)) 603 goto END; 604 605 /* Update the voltages value */ 606 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 607 if (!(data->has_in & (1 << i))) 608 continue; 609 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2; 610 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6; 611 data->in[i][IN_READ] = tmp; 612 } 613 614 /* in0-2 can have dynamic limits (W83795G only) */ 615 if (data->has_dyn_in) { 616 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX)); 617 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW)); 618 619 for (i = 0; i < 3; i++) { 620 if (!(data->has_dyn_in & (1 << i))) 621 continue; 622 data->in[i][IN_MAX] = 623 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 624 data->in[i][IN_LOW] = 625 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 626 data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03; 627 data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03; 628 } 629 } 630 631 /* Update fan */ 632 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 633 if (!(data->has_fan & (1 << i))) 634 continue; 635 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4; 636 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4; 637 } 638 639 /* Update temperature */ 640 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 641 data->temp[i][TEMP_READ] = 642 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]); 643 data->temp_read_vrlsb[i] = 644 w83795_read(client, W83795_REG_VRLSB); 645 } 646 647 /* Update dts temperature */ 648 if (data->enable_dts) { 649 for (i = 0; i < ARRAY_SIZE(data->dts); i++) { 650 if (!(data->has_dts & (1 << i))) 651 continue; 652 data->dts[i] = 653 w83795_read(client, W83795_REG_DTS(i)); 654 data->dts_read_vrlsb[i] = 655 w83795_read(client, W83795_REG_VRLSB); 656 } 657 } 658 659 /* Update pwm output */ 660 for (i = 0; i < data->has_pwm; i++) { 661 data->pwm[i][PWM_OUTPUT] = 662 w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT)); 663 } 664 665 /* 666 * Update intrusion and alarms 667 * It is important to read intrusion first, because reading from 668 * register SMI STS6 clears the interrupt status temporarily. 669 */ 670 tmp = w83795_read(client, W83795_REG_ALARM_CTRL); 671 /* Switch to interrupt status for intrusion if needed */ 672 if (tmp & ALARM_CTRL_RTSACS) 673 w83795_write(client, W83795_REG_ALARM_CTRL, 674 tmp & ~ALARM_CTRL_RTSACS); 675 intrusion = w83795_read(client, W83795_REG_ALARM(5)) & (1 << 6); 676 /* Switch to real-time alarms */ 677 w83795_write(client, W83795_REG_ALARM_CTRL, tmp | ALARM_CTRL_RTSACS); 678 for (i = 0; i < ARRAY_SIZE(data->alarms); i++) 679 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i)); 680 data->alarms[5] |= intrusion; 681 /* Restore original configuration if needed */ 682 if (!(tmp & ALARM_CTRL_RTSACS)) 683 w83795_write(client, W83795_REG_ALARM_CTRL, 684 tmp & ~ALARM_CTRL_RTSACS); 685 686 data->last_updated = jiffies; 687 data->valid = true; 688 689 END: 690 mutex_unlock(&data->update_lock); 691 return data; 692 } 693 694 /* 695 * Sysfs attributes 696 */ 697 698 #define ALARM_STATUS 0 699 #define BEEP_ENABLE 1 700 static ssize_t 701 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf) 702 { 703 struct w83795_data *data = w83795_update_device(dev); 704 struct sensor_device_attribute_2 *sensor_attr = 705 to_sensor_dev_attr_2(attr); 706 int nr = sensor_attr->nr; 707 int index = sensor_attr->index >> 3; 708 int bit = sensor_attr->index & 0x07; 709 u8 val; 710 711 if (nr == ALARM_STATUS) 712 val = (data->alarms[index] >> bit) & 1; 713 else /* BEEP_ENABLE */ 714 val = (data->beeps[index] >> bit) & 1; 715 716 return sprintf(buf, "%u\n", val); 717 } 718 719 static ssize_t 720 store_beep(struct device *dev, struct device_attribute *attr, 721 const char *buf, size_t count) 722 { 723 struct i2c_client *client = to_i2c_client(dev); 724 struct w83795_data *data = i2c_get_clientdata(client); 725 struct sensor_device_attribute_2 *sensor_attr = 726 to_sensor_dev_attr_2(attr); 727 int index = sensor_attr->index >> 3; 728 int shift = sensor_attr->index & 0x07; 729 u8 beep_bit = 1 << shift; 730 unsigned long val; 731 732 if (kstrtoul(buf, 10, &val) < 0) 733 return -EINVAL; 734 if (val != 0 && val != 1) 735 return -EINVAL; 736 737 mutex_lock(&data->update_lock); 738 data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index)); 739 data->beeps[index] &= ~beep_bit; 740 data->beeps[index] |= val << shift; 741 w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]); 742 mutex_unlock(&data->update_lock); 743 744 return count; 745 } 746 747 /* Write 0 to clear chassis alarm */ 748 static ssize_t 749 store_chassis_clear(struct device *dev, 750 struct device_attribute *attr, const char *buf, 751 size_t count) 752 { 753 struct i2c_client *client = to_i2c_client(dev); 754 struct w83795_data *data = i2c_get_clientdata(client); 755 unsigned long val; 756 757 if (kstrtoul(buf, 10, &val) < 0 || val != 0) 758 return -EINVAL; 759 760 mutex_lock(&data->update_lock); 761 val = w83795_read(client, W83795_REG_CLR_CHASSIS); 762 val |= 0x80; 763 w83795_write(client, W83795_REG_CLR_CHASSIS, val); 764 765 /* Clear status and force cache refresh */ 766 w83795_read(client, W83795_REG_ALARM(5)); 767 data->valid = false; 768 mutex_unlock(&data->update_lock); 769 return count; 770 } 771 772 #define FAN_INPUT 0 773 #define FAN_MIN 1 774 static ssize_t 775 show_fan(struct device *dev, struct device_attribute *attr, char *buf) 776 { 777 struct sensor_device_attribute_2 *sensor_attr = 778 to_sensor_dev_attr_2(attr); 779 int nr = sensor_attr->nr; 780 int index = sensor_attr->index; 781 struct w83795_data *data = w83795_update_device(dev); 782 u16 val; 783 784 if (nr == FAN_INPUT) 785 val = data->fan[index] & 0x0fff; 786 else 787 val = data->fan_min[index] & 0x0fff; 788 789 return sprintf(buf, "%lu\n", fan_from_reg(val)); 790 } 791 792 static ssize_t 793 store_fan_min(struct device *dev, struct device_attribute *attr, 794 const char *buf, size_t count) 795 { 796 struct sensor_device_attribute_2 *sensor_attr = 797 to_sensor_dev_attr_2(attr); 798 int index = sensor_attr->index; 799 struct i2c_client *client = to_i2c_client(dev); 800 struct w83795_data *data = i2c_get_clientdata(client); 801 unsigned long val; 802 803 if (kstrtoul(buf, 10, &val)) 804 return -EINVAL; 805 val = fan_to_reg(val); 806 807 mutex_lock(&data->update_lock); 808 data->fan_min[index] = val; 809 w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff); 810 val &= 0x0f; 811 if (index & 1) { 812 val <<= 4; 813 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 814 & 0x0f; 815 } else { 816 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 817 & 0xf0; 818 } 819 w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff); 820 mutex_unlock(&data->update_lock); 821 822 return count; 823 } 824 825 static ssize_t 826 show_pwm(struct device *dev, struct device_attribute *attr, char *buf) 827 { 828 struct w83795_data *data; 829 struct sensor_device_attribute_2 *sensor_attr = 830 to_sensor_dev_attr_2(attr); 831 int nr = sensor_attr->nr; 832 int index = sensor_attr->index; 833 unsigned int val; 834 835 data = nr == PWM_OUTPUT ? w83795_update_device(dev) 836 : w83795_update_pwm_config(dev); 837 838 switch (nr) { 839 case PWM_STOP_TIME: 840 val = time_from_reg(data->pwm[index][nr]); 841 break; 842 case PWM_FREQ: 843 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin); 844 break; 845 default: 846 val = data->pwm[index][nr]; 847 break; 848 } 849 850 return sprintf(buf, "%u\n", val); 851 } 852 853 static ssize_t 854 store_pwm(struct device *dev, struct device_attribute *attr, 855 const char *buf, size_t count) 856 { 857 struct i2c_client *client = to_i2c_client(dev); 858 struct w83795_data *data = i2c_get_clientdata(client); 859 struct sensor_device_attribute_2 *sensor_attr = 860 to_sensor_dev_attr_2(attr); 861 int nr = sensor_attr->nr; 862 int index = sensor_attr->index; 863 unsigned long val; 864 865 if (kstrtoul(buf, 10, &val) < 0) 866 return -EINVAL; 867 868 mutex_lock(&data->update_lock); 869 switch (nr) { 870 case PWM_STOP_TIME: 871 val = time_to_reg(val); 872 break; 873 case PWM_FREQ: 874 val = pwm_freq_to_reg(val, data->clkin); 875 break; 876 default: 877 val = clamp_val(val, 0, 0xff); 878 break; 879 } 880 w83795_write(client, W83795_REG_PWM(index, nr), val); 881 data->pwm[index][nr] = val; 882 mutex_unlock(&data->update_lock); 883 return count; 884 } 885 886 static ssize_t 887 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf) 888 { 889 struct sensor_device_attribute_2 *sensor_attr = 890 to_sensor_dev_attr_2(attr); 891 struct w83795_data *data = w83795_update_pwm_config(dev); 892 int index = sensor_attr->index; 893 u8 tmp; 894 895 /* Speed cruise mode */ 896 if (data->pwm_fcms[0] & (1 << index)) { 897 tmp = 2; 898 goto out; 899 } 900 /* Thermal cruise or SmartFan IV mode */ 901 for (tmp = 0; tmp < 6; tmp++) { 902 if (data->pwm_tfmr[tmp] & (1 << index)) { 903 tmp = 3; 904 goto out; 905 } 906 } 907 /* Manual mode */ 908 tmp = 1; 909 910 out: 911 return sprintf(buf, "%u\n", tmp); 912 } 913 914 static ssize_t 915 store_pwm_enable(struct device *dev, struct device_attribute *attr, 916 const char *buf, size_t count) 917 { 918 struct i2c_client *client = to_i2c_client(dev); 919 struct w83795_data *data = w83795_update_pwm_config(dev); 920 struct sensor_device_attribute_2 *sensor_attr = 921 to_sensor_dev_attr_2(attr); 922 int index = sensor_attr->index; 923 unsigned long val; 924 int i; 925 926 if (kstrtoul(buf, 10, &val) < 0) 927 return -EINVAL; 928 if (val < 1 || val > 2) 929 return -EINVAL; 930 931 #ifndef CONFIG_SENSORS_W83795_FANCTRL 932 if (val > 1) { 933 dev_warn(dev, "Automatic fan speed control support disabled\n"); 934 dev_warn(dev, "Build with CONFIG_SENSORS_W83795_FANCTRL=y if you want it\n"); 935 return -EOPNOTSUPP; 936 } 937 #endif 938 939 mutex_lock(&data->update_lock); 940 switch (val) { 941 case 1: 942 /* Clear speed cruise mode bits */ 943 data->pwm_fcms[0] &= ~(1 << index); 944 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 945 /* Clear thermal cruise mode bits */ 946 for (i = 0; i < 6; i++) { 947 data->pwm_tfmr[i] &= ~(1 << index); 948 w83795_write(client, W83795_REG_TFMR(i), 949 data->pwm_tfmr[i]); 950 } 951 break; 952 case 2: 953 data->pwm_fcms[0] |= (1 << index); 954 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 955 break; 956 } 957 mutex_unlock(&data->update_lock); 958 return count; 959 } 960 961 static ssize_t 962 show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf) 963 { 964 struct w83795_data *data = w83795_update_pwm_config(dev); 965 int index = to_sensor_dev_attr_2(attr)->index; 966 unsigned int mode; 967 968 if (data->pwm_fomc & (1 << index)) 969 mode = 0; /* DC */ 970 else 971 mode = 1; /* PWM */ 972 973 return sprintf(buf, "%u\n", mode); 974 } 975 976 /* 977 * Check whether a given temperature source can ever be useful. 978 * Returns the number of selectable temperature channels which are 979 * enabled. 980 */ 981 static int w83795_tss_useful(const struct w83795_data *data, int tsrc) 982 { 983 int useful = 0, i; 984 985 for (i = 0; i < 4; i++) { 986 if (tss_map[i][tsrc] == TSS_MAP_RESERVED) 987 continue; 988 if (tss_map[i][tsrc] < 6) /* Analog */ 989 useful += (data->has_temp >> tss_map[i][tsrc]) & 1; 990 else /* Digital */ 991 useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1; 992 } 993 994 return useful; 995 } 996 997 static ssize_t 998 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf) 999 { 1000 struct sensor_device_attribute_2 *sensor_attr = 1001 to_sensor_dev_attr_2(attr); 1002 struct w83795_data *data = w83795_update_pwm_config(dev); 1003 int index = sensor_attr->index; 1004 u8 tmp = data->temp_src[index / 2]; 1005 1006 if (index & 1) 1007 tmp >>= 4; /* Pick high nibble */ 1008 else 1009 tmp &= 0x0f; /* Pick low nibble */ 1010 1011 /* Look-up the actual temperature channel number */ 1012 if (tmp >= 4 || tss_map[tmp][index] == TSS_MAP_RESERVED) 1013 return -EINVAL; /* Shouldn't happen */ 1014 1015 return sprintf(buf, "%u\n", (unsigned int)tss_map[tmp][index] + 1); 1016 } 1017 1018 static ssize_t 1019 store_temp_src(struct device *dev, struct device_attribute *attr, 1020 const char *buf, size_t count) 1021 { 1022 struct i2c_client *client = to_i2c_client(dev); 1023 struct w83795_data *data = w83795_update_pwm_config(dev); 1024 struct sensor_device_attribute_2 *sensor_attr = 1025 to_sensor_dev_attr_2(attr); 1026 int index = sensor_attr->index; 1027 int tmp; 1028 unsigned long channel; 1029 u8 val = index / 2; 1030 1031 if (kstrtoul(buf, 10, &channel) < 0 || 1032 channel < 1 || channel > 14) 1033 return -EINVAL; 1034 1035 /* Check if request can be fulfilled */ 1036 for (tmp = 0; tmp < 4; tmp++) { 1037 if (tss_map[tmp][index] == channel - 1) 1038 break; 1039 } 1040 if (tmp == 4) /* No match */ 1041 return -EINVAL; 1042 1043 mutex_lock(&data->update_lock); 1044 if (index & 1) { 1045 tmp <<= 4; 1046 data->temp_src[val] &= 0x0f; 1047 } else { 1048 data->temp_src[val] &= 0xf0; 1049 } 1050 data->temp_src[val] |= tmp; 1051 w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]); 1052 mutex_unlock(&data->update_lock); 1053 1054 return count; 1055 } 1056 1057 #define TEMP_PWM_ENABLE 0 1058 #define TEMP_PWM_FAN_MAP 1 1059 static ssize_t 1060 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 1061 char *buf) 1062 { 1063 struct w83795_data *data = w83795_update_pwm_config(dev); 1064 struct sensor_device_attribute_2 *sensor_attr = 1065 to_sensor_dev_attr_2(attr); 1066 int nr = sensor_attr->nr; 1067 int index = sensor_attr->index; 1068 u8 tmp = 0xff; 1069 1070 switch (nr) { 1071 case TEMP_PWM_ENABLE: 1072 tmp = (data->pwm_fcms[1] >> index) & 1; 1073 if (tmp) 1074 tmp = 4; 1075 else 1076 tmp = 3; 1077 break; 1078 case TEMP_PWM_FAN_MAP: 1079 tmp = data->pwm_tfmr[index]; 1080 break; 1081 } 1082 1083 return sprintf(buf, "%u\n", tmp); 1084 } 1085 1086 static ssize_t 1087 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 1088 const char *buf, size_t count) 1089 { 1090 struct i2c_client *client = to_i2c_client(dev); 1091 struct w83795_data *data = w83795_update_pwm_config(dev); 1092 struct sensor_device_attribute_2 *sensor_attr = 1093 to_sensor_dev_attr_2(attr); 1094 int nr = sensor_attr->nr; 1095 int index = sensor_attr->index; 1096 unsigned long tmp; 1097 1098 if (kstrtoul(buf, 10, &tmp) < 0) 1099 return -EINVAL; 1100 1101 switch (nr) { 1102 case TEMP_PWM_ENABLE: 1103 if (tmp != 3 && tmp != 4) 1104 return -EINVAL; 1105 tmp -= 3; 1106 mutex_lock(&data->update_lock); 1107 data->pwm_fcms[1] &= ~(1 << index); 1108 data->pwm_fcms[1] |= tmp << index; 1109 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]); 1110 mutex_unlock(&data->update_lock); 1111 break; 1112 case TEMP_PWM_FAN_MAP: 1113 mutex_lock(&data->update_lock); 1114 tmp = clamp_val(tmp, 0, 0xff); 1115 w83795_write(client, W83795_REG_TFMR(index), tmp); 1116 data->pwm_tfmr[index] = tmp; 1117 mutex_unlock(&data->update_lock); 1118 break; 1119 } 1120 return count; 1121 } 1122 1123 #define FANIN_TARGET 0 1124 #define FANIN_TOL 1 1125 static ssize_t 1126 show_fanin(struct device *dev, struct device_attribute *attr, char *buf) 1127 { 1128 struct w83795_data *data = w83795_update_pwm_config(dev); 1129 struct sensor_device_attribute_2 *sensor_attr = 1130 to_sensor_dev_attr_2(attr); 1131 int nr = sensor_attr->nr; 1132 int index = sensor_attr->index; 1133 u16 tmp = 0; 1134 1135 switch (nr) { 1136 case FANIN_TARGET: 1137 tmp = fan_from_reg(data->target_speed[index]); 1138 break; 1139 case FANIN_TOL: 1140 tmp = data->tol_speed; 1141 break; 1142 } 1143 1144 return sprintf(buf, "%u\n", tmp); 1145 } 1146 1147 static ssize_t 1148 store_fanin(struct device *dev, struct device_attribute *attr, 1149 const char *buf, size_t count) 1150 { 1151 struct i2c_client *client = to_i2c_client(dev); 1152 struct w83795_data *data = i2c_get_clientdata(client); 1153 struct sensor_device_attribute_2 *sensor_attr = 1154 to_sensor_dev_attr_2(attr); 1155 int nr = sensor_attr->nr; 1156 int index = sensor_attr->index; 1157 unsigned long val; 1158 1159 if (kstrtoul(buf, 10, &val) < 0) 1160 return -EINVAL; 1161 1162 mutex_lock(&data->update_lock); 1163 switch (nr) { 1164 case FANIN_TARGET: 1165 val = fan_to_reg(clamp_val(val, 0, 0xfff)); 1166 w83795_write(client, W83795_REG_FTSH(index), val >> 4); 1167 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0); 1168 data->target_speed[index] = val; 1169 break; 1170 case FANIN_TOL: 1171 val = clamp_val(val, 0, 0x3f); 1172 w83795_write(client, W83795_REG_TFTS, val); 1173 data->tol_speed = val; 1174 break; 1175 } 1176 mutex_unlock(&data->update_lock); 1177 1178 return count; 1179 } 1180 1181 1182 static ssize_t 1183 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1184 { 1185 struct w83795_data *data = w83795_update_pwm_config(dev); 1186 struct sensor_device_attribute_2 *sensor_attr = 1187 to_sensor_dev_attr_2(attr); 1188 int nr = sensor_attr->nr; 1189 int index = sensor_attr->index; 1190 long tmp = temp_from_reg(data->pwm_temp[index][nr]); 1191 1192 return sprintf(buf, "%ld\n", tmp); 1193 } 1194 1195 static ssize_t 1196 store_temp_pwm(struct device *dev, struct device_attribute *attr, 1197 const char *buf, size_t count) 1198 { 1199 struct i2c_client *client = to_i2c_client(dev); 1200 struct w83795_data *data = i2c_get_clientdata(client); 1201 struct sensor_device_attribute_2 *sensor_attr = 1202 to_sensor_dev_attr_2(attr); 1203 int nr = sensor_attr->nr; 1204 int index = sensor_attr->index; 1205 unsigned long val; 1206 u8 tmp; 1207 1208 if (kstrtoul(buf, 10, &val) < 0) 1209 return -EINVAL; 1210 val /= 1000; 1211 1212 mutex_lock(&data->update_lock); 1213 switch (nr) { 1214 case TEMP_PWM_TTTI: 1215 val = clamp_val(val, 0, 0x7f); 1216 w83795_write(client, W83795_REG_TTTI(index), val); 1217 break; 1218 case TEMP_PWM_CTFS: 1219 val = clamp_val(val, 0, 0x7f); 1220 w83795_write(client, W83795_REG_CTFS(index), val); 1221 break; 1222 case TEMP_PWM_HCT: 1223 val = clamp_val(val, 0, 0x0f); 1224 tmp = w83795_read(client, W83795_REG_HT(index)); 1225 tmp &= 0x0f; 1226 tmp |= (val << 4) & 0xf0; 1227 w83795_write(client, W83795_REG_HT(index), tmp); 1228 break; 1229 case TEMP_PWM_HOT: 1230 val = clamp_val(val, 0, 0x0f); 1231 tmp = w83795_read(client, W83795_REG_HT(index)); 1232 tmp &= 0xf0; 1233 tmp |= val & 0x0f; 1234 w83795_write(client, W83795_REG_HT(index), tmp); 1235 break; 1236 } 1237 data->pwm_temp[index][nr] = val; 1238 mutex_unlock(&data->update_lock); 1239 1240 return count; 1241 } 1242 1243 static ssize_t 1244 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1245 { 1246 struct w83795_data *data = w83795_update_pwm_config(dev); 1247 struct sensor_device_attribute_2 *sensor_attr = 1248 to_sensor_dev_attr_2(attr); 1249 int nr = sensor_attr->nr; 1250 int index = sensor_attr->index; 1251 1252 return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]); 1253 } 1254 1255 static ssize_t 1256 store_sf4_pwm(struct device *dev, struct device_attribute *attr, 1257 const char *buf, size_t count) 1258 { 1259 struct i2c_client *client = to_i2c_client(dev); 1260 struct w83795_data *data = i2c_get_clientdata(client); 1261 struct sensor_device_attribute_2 *sensor_attr = 1262 to_sensor_dev_attr_2(attr); 1263 int nr = sensor_attr->nr; 1264 int index = sensor_attr->index; 1265 unsigned long val; 1266 1267 if (kstrtoul(buf, 10, &val) < 0) 1268 return -EINVAL; 1269 1270 mutex_lock(&data->update_lock); 1271 w83795_write(client, W83795_REG_SF4_PWM(index, nr), val); 1272 data->sf4_reg[index][SF4_PWM][nr] = val; 1273 mutex_unlock(&data->update_lock); 1274 1275 return count; 1276 } 1277 1278 static ssize_t 1279 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf) 1280 { 1281 struct w83795_data *data = w83795_update_pwm_config(dev); 1282 struct sensor_device_attribute_2 *sensor_attr = 1283 to_sensor_dev_attr_2(attr); 1284 int nr = sensor_attr->nr; 1285 int index = sensor_attr->index; 1286 1287 return sprintf(buf, "%u\n", 1288 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000); 1289 } 1290 1291 static ssize_t 1292 store_sf4_temp(struct device *dev, struct device_attribute *attr, 1293 const char *buf, size_t count) 1294 { 1295 struct i2c_client *client = to_i2c_client(dev); 1296 struct w83795_data *data = i2c_get_clientdata(client); 1297 struct sensor_device_attribute_2 *sensor_attr = 1298 to_sensor_dev_attr_2(attr); 1299 int nr = sensor_attr->nr; 1300 int index = sensor_attr->index; 1301 unsigned long val; 1302 1303 if (kstrtoul(buf, 10, &val) < 0) 1304 return -EINVAL; 1305 val /= 1000; 1306 1307 mutex_lock(&data->update_lock); 1308 w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val); 1309 data->sf4_reg[index][SF4_TEMP][nr] = val; 1310 mutex_unlock(&data->update_lock); 1311 1312 return count; 1313 } 1314 1315 1316 static ssize_t 1317 show_temp(struct device *dev, struct device_attribute *attr, char *buf) 1318 { 1319 struct sensor_device_attribute_2 *sensor_attr = 1320 to_sensor_dev_attr_2(attr); 1321 int nr = sensor_attr->nr; 1322 int index = sensor_attr->index; 1323 struct w83795_data *data = w83795_update_device(dev); 1324 long temp = temp_from_reg(data->temp[index][nr]); 1325 1326 if (nr == TEMP_READ) 1327 temp += (data->temp_read_vrlsb[index] >> 6) * 250; 1328 return sprintf(buf, "%ld\n", temp); 1329 } 1330 1331 static ssize_t 1332 store_temp(struct device *dev, struct device_attribute *attr, 1333 const char *buf, size_t count) 1334 { 1335 struct sensor_device_attribute_2 *sensor_attr = 1336 to_sensor_dev_attr_2(attr); 1337 int nr = sensor_attr->nr; 1338 int index = sensor_attr->index; 1339 struct i2c_client *client = to_i2c_client(dev); 1340 struct w83795_data *data = i2c_get_clientdata(client); 1341 long tmp; 1342 1343 if (kstrtol(buf, 10, &tmp) < 0) 1344 return -EINVAL; 1345 1346 mutex_lock(&data->update_lock); 1347 data->temp[index][nr] = temp_to_reg(tmp, -128, 127); 1348 w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]); 1349 mutex_unlock(&data->update_lock); 1350 return count; 1351 } 1352 1353 1354 static ssize_t 1355 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf) 1356 { 1357 struct w83795_data *data = dev_get_drvdata(dev); 1358 int tmp; 1359 1360 if (data->enable_dts & 2) 1361 tmp = 5; 1362 else 1363 tmp = 6; 1364 1365 return sprintf(buf, "%d\n", tmp); 1366 } 1367 1368 static ssize_t 1369 show_dts(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 index = sensor_attr->index; 1374 struct w83795_data *data = w83795_update_device(dev); 1375 long temp = temp_from_reg(data->dts[index]); 1376 1377 temp += (data->dts_read_vrlsb[index] >> 6) * 250; 1378 return sprintf(buf, "%ld\n", temp); 1379 } 1380 1381 static ssize_t 1382 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf) 1383 { 1384 struct sensor_device_attribute_2 *sensor_attr = 1385 to_sensor_dev_attr_2(attr); 1386 int nr = sensor_attr->nr; 1387 struct w83795_data *data = dev_get_drvdata(dev); 1388 long temp = temp_from_reg(data->dts_ext[nr]); 1389 1390 return sprintf(buf, "%ld\n", temp); 1391 } 1392 1393 static ssize_t 1394 store_dts_ext(struct device *dev, struct device_attribute *attr, 1395 const char *buf, size_t count) 1396 { 1397 struct sensor_device_attribute_2 *sensor_attr = 1398 to_sensor_dev_attr_2(attr); 1399 int nr = sensor_attr->nr; 1400 struct i2c_client *client = to_i2c_client(dev); 1401 struct w83795_data *data = i2c_get_clientdata(client); 1402 long tmp; 1403 1404 if (kstrtol(buf, 10, &tmp) < 0) 1405 return -EINVAL; 1406 1407 mutex_lock(&data->update_lock); 1408 data->dts_ext[nr] = temp_to_reg(tmp, -128, 127); 1409 w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]); 1410 mutex_unlock(&data->update_lock); 1411 return count; 1412 } 1413 1414 1415 static ssize_t 1416 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf) 1417 { 1418 struct w83795_data *data = dev_get_drvdata(dev); 1419 struct sensor_device_attribute_2 *sensor_attr = 1420 to_sensor_dev_attr_2(attr); 1421 int index = sensor_attr->index; 1422 int tmp; 1423 1424 if (data->temp_mode & (1 << index)) 1425 tmp = 3; /* Thermal diode */ 1426 else 1427 tmp = 4; /* Thermistor */ 1428 1429 return sprintf(buf, "%d\n", tmp); 1430 } 1431 1432 /* Only for temp1-4 (temp5-6 can only be thermistor) */ 1433 static ssize_t 1434 store_temp_mode(struct device *dev, struct device_attribute *attr, 1435 const char *buf, size_t count) 1436 { 1437 struct i2c_client *client = to_i2c_client(dev); 1438 struct w83795_data *data = i2c_get_clientdata(client); 1439 struct sensor_device_attribute_2 *sensor_attr = 1440 to_sensor_dev_attr_2(attr); 1441 int index = sensor_attr->index; 1442 int reg_shift; 1443 unsigned long val; 1444 u8 tmp; 1445 1446 if (kstrtoul(buf, 10, &val) < 0) 1447 return -EINVAL; 1448 if ((val != 4) && (val != 3)) 1449 return -EINVAL; 1450 1451 mutex_lock(&data->update_lock); 1452 if (val == 3) { 1453 /* Thermal diode */ 1454 val = 0x01; 1455 data->temp_mode |= 1 << index; 1456 } else if (val == 4) { 1457 /* Thermistor */ 1458 val = 0x03; 1459 data->temp_mode &= ~(1 << index); 1460 } 1461 1462 reg_shift = 2 * index; 1463 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 1464 tmp &= ~(0x03 << reg_shift); 1465 tmp |= val << reg_shift; 1466 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp); 1467 1468 mutex_unlock(&data->update_lock); 1469 return count; 1470 } 1471 1472 1473 /* show/store VIN */ 1474 static ssize_t 1475 show_in(struct device *dev, struct device_attribute *attr, char *buf) 1476 { 1477 struct sensor_device_attribute_2 *sensor_attr = 1478 to_sensor_dev_attr_2(attr); 1479 int nr = sensor_attr->nr; 1480 int index = sensor_attr->index; 1481 struct w83795_data *data = w83795_update_device(dev); 1482 u16 val = data->in[index][nr]; 1483 u8 lsb_idx; 1484 1485 switch (nr) { 1486 case IN_READ: 1487 /* calculate this value again by sensors as sensors3.conf */ 1488 if ((index >= 17) && 1489 !((data->has_gain >> (index - 17)) & 1)) 1490 val *= 8; 1491 break; 1492 case IN_MAX: 1493 case IN_LOW: 1494 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1495 val <<= 2; 1496 val |= (data->in_lsb[lsb_idx][nr] >> 1497 IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]) & 0x03; 1498 if ((index >= 17) && 1499 !((data->has_gain >> (index - 17)) & 1)) 1500 val *= 8; 1501 break; 1502 } 1503 val = in_from_reg(index, val); 1504 1505 return sprintf(buf, "%d\n", val); 1506 } 1507 1508 static ssize_t 1509 store_in(struct device *dev, struct device_attribute *attr, 1510 const char *buf, size_t count) 1511 { 1512 struct sensor_device_attribute_2 *sensor_attr = 1513 to_sensor_dev_attr_2(attr); 1514 int nr = sensor_attr->nr; 1515 int index = sensor_attr->index; 1516 struct i2c_client *client = to_i2c_client(dev); 1517 struct w83795_data *data = i2c_get_clientdata(client); 1518 unsigned long val; 1519 u8 tmp; 1520 u8 lsb_idx; 1521 1522 if (kstrtoul(buf, 10, &val) < 0) 1523 return -EINVAL; 1524 val = in_to_reg(index, val); 1525 1526 if ((index >= 17) && 1527 !((data->has_gain >> (index - 17)) & 1)) 1528 val /= 8; 1529 val = clamp_val(val, 0, 0x3FF); 1530 mutex_lock(&data->update_lock); 1531 1532 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1533 tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr)); 1534 tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]); 1535 tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]; 1536 w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp); 1537 data->in_lsb[lsb_idx][nr] = tmp; 1538 1539 tmp = (val >> 2) & 0xff; 1540 w83795_write(client, W83795_REG_IN[index][nr], tmp); 1541 data->in[index][nr] = tmp; 1542 1543 mutex_unlock(&data->update_lock); 1544 return count; 1545 } 1546 1547 1548 #ifdef CONFIG_SENSORS_W83795_FANCTRL 1549 static ssize_t 1550 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf) 1551 { 1552 struct sensor_device_attribute_2 *sensor_attr = 1553 to_sensor_dev_attr_2(attr); 1554 int nr = sensor_attr->nr; 1555 struct w83795_data *data = w83795_update_pwm_config(dev); 1556 u16 val = data->setup_pwm[nr]; 1557 1558 switch (nr) { 1559 case SETUP_PWM_UPTIME: 1560 case SETUP_PWM_DOWNTIME: 1561 val = time_from_reg(val); 1562 break; 1563 } 1564 1565 return sprintf(buf, "%d\n", val); 1566 } 1567 1568 static ssize_t 1569 store_sf_setup(struct device *dev, struct device_attribute *attr, 1570 const char *buf, size_t count) 1571 { 1572 struct sensor_device_attribute_2 *sensor_attr = 1573 to_sensor_dev_attr_2(attr); 1574 int nr = sensor_attr->nr; 1575 struct i2c_client *client = to_i2c_client(dev); 1576 struct w83795_data *data = i2c_get_clientdata(client); 1577 unsigned long val; 1578 1579 if (kstrtoul(buf, 10, &val) < 0) 1580 return -EINVAL; 1581 1582 switch (nr) { 1583 case SETUP_PWM_DEFAULT: 1584 val = clamp_val(val, 0, 0xff); 1585 break; 1586 case SETUP_PWM_UPTIME: 1587 case SETUP_PWM_DOWNTIME: 1588 val = time_to_reg(val); 1589 if (val == 0) 1590 return -EINVAL; 1591 break; 1592 } 1593 1594 mutex_lock(&data->update_lock); 1595 data->setup_pwm[nr] = val; 1596 w83795_write(client, W83795_REG_SETUP_PWM(nr), val); 1597 mutex_unlock(&data->update_lock); 1598 return count; 1599 } 1600 #endif 1601 1602 1603 #define NOT_USED -1 1604 1605 /* 1606 * Don't change the attribute order, _max, _min and _beep are accessed by index 1607 * somewhere else in the code 1608 */ 1609 #define SENSOR_ATTR_IN(index) { \ 1610 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ 1611 IN_READ, index), \ 1612 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \ 1613 store_in, IN_MAX, index), \ 1614 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \ 1615 store_in, IN_LOW, index), \ 1616 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \ 1617 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \ 1618 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \ 1619 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1620 index + ((index > 14) ? 1 : 0)) } 1621 1622 /* 1623 * Don't change the attribute order, _beep is accessed by index 1624 * somewhere else in the code 1625 */ 1626 #define SENSOR_ATTR_FAN(index) { \ 1627 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ 1628 NULL, FAN_INPUT, index - 1), \ 1629 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \ 1630 show_fan, store_fan_min, FAN_MIN, index - 1), \ 1631 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \ 1632 NULL, ALARM_STATUS, index + 31), \ 1633 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \ 1634 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) } 1635 1636 #define SENSOR_ATTR_PWM(index) { \ 1637 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \ 1638 store_pwm, PWM_OUTPUT, index - 1), \ 1639 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \ 1640 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \ 1641 SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \ 1642 show_pwm_mode, NULL, NOT_USED, index - 1), \ 1643 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \ 1644 show_pwm, store_pwm, PWM_FREQ, index - 1), \ 1645 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \ 1646 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \ 1647 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \ 1648 show_pwm, store_pwm, PWM_START, index - 1), \ 1649 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \ 1650 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \ 1651 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \ 1652 show_fanin, store_fanin, FANIN_TARGET, index - 1) } 1653 1654 /* 1655 * Don't change the attribute order, _beep is accessed by index 1656 * somewhere else in the code 1657 */ 1658 #define SENSOR_ATTR_DTS(index) { \ 1659 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \ 1660 show_dts_mode, NULL, NOT_USED, index - 7), \ 1661 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \ 1662 NULL, NOT_USED, index - 7), \ 1663 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \ 1664 store_dts_ext, DTS_CRIT, NOT_USED), \ 1665 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \ 1666 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \ 1667 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \ 1668 store_dts_ext, DTS_WARN, NOT_USED), \ 1669 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1670 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \ 1671 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1672 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \ 1673 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1674 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) } 1675 1676 /* 1677 * Don't change the attribute order, _beep is accessed by index 1678 * somewhere else in the code 1679 */ 1680 #define SENSOR_ATTR_TEMP(index) { \ 1681 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 5 ? S_IWUSR : 0), \ 1682 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ 1683 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \ 1684 NULL, TEMP_READ, index - 1), \ 1685 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \ 1686 store_temp, TEMP_CRIT, index - 1), \ 1687 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \ 1688 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \ 1689 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \ 1690 store_temp, TEMP_WARN, index - 1), \ 1691 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1692 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \ 1693 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1694 show_alarm_beep, NULL, ALARM_STATUS, \ 1695 index + (index > 4 ? 11 : 17)), \ 1696 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1697 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1698 index + (index > 4 ? 11 : 17)), \ 1699 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \ 1700 show_temp_pwm_enable, store_temp_pwm_enable, \ 1701 TEMP_PWM_ENABLE, index - 1), \ 1702 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \ 1703 show_temp_pwm_enable, store_temp_pwm_enable, \ 1704 TEMP_PWM_FAN_MAP, index - 1), \ 1705 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \ 1706 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \ 1707 SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO, \ 1708 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \ 1709 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO, \ 1710 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \ 1711 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \ 1712 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \ 1713 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \ 1714 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \ 1715 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \ 1716 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \ 1717 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \ 1718 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \ 1719 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \ 1720 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \ 1721 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \ 1722 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \ 1723 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \ 1724 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \ 1725 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \ 1726 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \ 1727 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\ 1728 show_sf4_temp, store_sf4_temp, 0, index - 1), \ 1729 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\ 1730 show_sf4_temp, store_sf4_temp, 1, index - 1), \ 1731 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\ 1732 show_sf4_temp, store_sf4_temp, 2, index - 1), \ 1733 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\ 1734 show_sf4_temp, store_sf4_temp, 3, index - 1), \ 1735 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\ 1736 show_sf4_temp, store_sf4_temp, 4, index - 1), \ 1737 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\ 1738 show_sf4_temp, store_sf4_temp, 5, index - 1), \ 1739 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\ 1740 show_sf4_temp, store_sf4_temp, 6, index - 1) } 1741 1742 1743 static struct sensor_device_attribute_2 w83795_in[][5] = { 1744 SENSOR_ATTR_IN(0), 1745 SENSOR_ATTR_IN(1), 1746 SENSOR_ATTR_IN(2), 1747 SENSOR_ATTR_IN(3), 1748 SENSOR_ATTR_IN(4), 1749 SENSOR_ATTR_IN(5), 1750 SENSOR_ATTR_IN(6), 1751 SENSOR_ATTR_IN(7), 1752 SENSOR_ATTR_IN(8), 1753 SENSOR_ATTR_IN(9), 1754 SENSOR_ATTR_IN(10), 1755 SENSOR_ATTR_IN(11), 1756 SENSOR_ATTR_IN(12), 1757 SENSOR_ATTR_IN(13), 1758 SENSOR_ATTR_IN(14), 1759 SENSOR_ATTR_IN(15), 1760 SENSOR_ATTR_IN(16), 1761 SENSOR_ATTR_IN(17), 1762 SENSOR_ATTR_IN(18), 1763 SENSOR_ATTR_IN(19), 1764 SENSOR_ATTR_IN(20), 1765 }; 1766 1767 static const struct sensor_device_attribute_2 w83795_fan[][4] = { 1768 SENSOR_ATTR_FAN(1), 1769 SENSOR_ATTR_FAN(2), 1770 SENSOR_ATTR_FAN(3), 1771 SENSOR_ATTR_FAN(4), 1772 SENSOR_ATTR_FAN(5), 1773 SENSOR_ATTR_FAN(6), 1774 SENSOR_ATTR_FAN(7), 1775 SENSOR_ATTR_FAN(8), 1776 SENSOR_ATTR_FAN(9), 1777 SENSOR_ATTR_FAN(10), 1778 SENSOR_ATTR_FAN(11), 1779 SENSOR_ATTR_FAN(12), 1780 SENSOR_ATTR_FAN(13), 1781 SENSOR_ATTR_FAN(14), 1782 }; 1783 1784 static const struct sensor_device_attribute_2 w83795_temp[][28] = { 1785 SENSOR_ATTR_TEMP(1), 1786 SENSOR_ATTR_TEMP(2), 1787 SENSOR_ATTR_TEMP(3), 1788 SENSOR_ATTR_TEMP(4), 1789 SENSOR_ATTR_TEMP(5), 1790 SENSOR_ATTR_TEMP(6), 1791 }; 1792 1793 static const struct sensor_device_attribute_2 w83795_dts[][8] = { 1794 SENSOR_ATTR_DTS(7), 1795 SENSOR_ATTR_DTS(8), 1796 SENSOR_ATTR_DTS(9), 1797 SENSOR_ATTR_DTS(10), 1798 SENSOR_ATTR_DTS(11), 1799 SENSOR_ATTR_DTS(12), 1800 SENSOR_ATTR_DTS(13), 1801 SENSOR_ATTR_DTS(14), 1802 }; 1803 1804 static const struct sensor_device_attribute_2 w83795_pwm[][8] = { 1805 SENSOR_ATTR_PWM(1), 1806 SENSOR_ATTR_PWM(2), 1807 SENSOR_ATTR_PWM(3), 1808 SENSOR_ATTR_PWM(4), 1809 SENSOR_ATTR_PWM(5), 1810 SENSOR_ATTR_PWM(6), 1811 SENSOR_ATTR_PWM(7), 1812 SENSOR_ATTR_PWM(8), 1813 }; 1814 1815 static const struct sensor_device_attribute_2 w83795_tss[6] = { 1816 SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO, 1817 show_temp_src, store_temp_src, NOT_USED, 0), 1818 SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO, 1819 show_temp_src, store_temp_src, NOT_USED, 1), 1820 SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO, 1821 show_temp_src, store_temp_src, NOT_USED, 2), 1822 SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO, 1823 show_temp_src, store_temp_src, NOT_USED, 3), 1824 SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO, 1825 show_temp_src, store_temp_src, NOT_USED, 4), 1826 SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO, 1827 show_temp_src, store_temp_src, NOT_USED, 5), 1828 }; 1829 1830 static const struct sensor_device_attribute_2 sda_single_files[] = { 1831 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep, 1832 store_chassis_clear, ALARM_STATUS, 46), 1833 #ifdef CONFIG_SENSORS_W83795_FANCTRL 1834 SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin, 1835 store_fanin, FANIN_TOL, NOT_USED), 1836 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup, 1837 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED), 1838 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup, 1839 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED), 1840 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup, 1841 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED), 1842 #endif 1843 }; 1844 1845 static const struct sensor_device_attribute_2 sda_beep_files[] = { 1846 SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep, 1847 store_beep, BEEP_ENABLE, 46), 1848 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep, 1849 store_beep, BEEP_ENABLE, 47), 1850 }; 1851 1852 /* 1853 * Driver interface 1854 */ 1855 1856 static void w83795_init_client(struct i2c_client *client) 1857 { 1858 struct w83795_data *data = i2c_get_clientdata(client); 1859 static const u16 clkin[4] = { /* in kHz */ 1860 14318, 24000, 33333, 48000 1861 }; 1862 u8 config; 1863 1864 if (reset) 1865 w83795_write(client, W83795_REG_CONFIG, 0x80); 1866 1867 /* Start monitoring if needed */ 1868 config = w83795_read(client, W83795_REG_CONFIG); 1869 if (!(config & W83795_REG_CONFIG_START)) { 1870 dev_info(&client->dev, "Enabling monitoring operations\n"); 1871 w83795_write(client, W83795_REG_CONFIG, 1872 config | W83795_REG_CONFIG_START); 1873 } 1874 1875 data->clkin = clkin[(config >> 3) & 0x3]; 1876 dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin); 1877 } 1878 1879 static int w83795_get_device_id(struct i2c_client *client) 1880 { 1881 int device_id; 1882 1883 device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID); 1884 1885 /* 1886 * Special case for rev. A chips; can't be checked first because later 1887 * revisions emulate this for compatibility 1888 */ 1889 if (device_id < 0 || (device_id & 0xf0) != 0x50) { 1890 int alt_id; 1891 1892 alt_id = i2c_smbus_read_byte_data(client, 1893 W83795_REG_DEVICEID_A); 1894 if (alt_id == 0x50) 1895 device_id = alt_id; 1896 } 1897 1898 return device_id; 1899 } 1900 1901 /* Return 0 if detection is successful, -ENODEV otherwise */ 1902 static int w83795_detect(struct i2c_client *client, 1903 struct i2c_board_info *info) 1904 { 1905 int bank, vendor_id, device_id, expected, i2c_addr, config; 1906 struct i2c_adapter *adapter = client->adapter; 1907 unsigned short address = client->addr; 1908 const char *chip_name; 1909 1910 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1911 return -ENODEV; 1912 bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 1913 if (bank < 0 || (bank & 0x7c)) { 1914 dev_dbg(&adapter->dev, 1915 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1916 address, "bank"); 1917 return -ENODEV; 1918 } 1919 1920 /* Check Nuvoton vendor ID */ 1921 vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID); 1922 expected = bank & 0x80 ? 0x5c : 0xa3; 1923 if (vendor_id != expected) { 1924 dev_dbg(&adapter->dev, 1925 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1926 address, "vendor id"); 1927 return -ENODEV; 1928 } 1929 1930 /* Check device ID */ 1931 device_id = w83795_get_device_id(client) | 1932 (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8); 1933 if ((device_id >> 4) != 0x795) { 1934 dev_dbg(&adapter->dev, 1935 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1936 address, "device id\n"); 1937 return -ENODEV; 1938 } 1939 1940 /* 1941 * If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR 1942 * should match 1943 */ 1944 if ((bank & 0x07) == 0) { 1945 i2c_addr = i2c_smbus_read_byte_data(client, 1946 W83795_REG_I2C_ADDR); 1947 if ((i2c_addr & 0x7f) != address) { 1948 dev_dbg(&adapter->dev, 1949 "w83795: Detection failed at addr 0x%02hx, " 1950 "check %s\n", address, "i2c addr"); 1951 return -ENODEV; 1952 } 1953 } 1954 1955 /* 1956 * Check 795 chip type: 795G or 795ADG 1957 * Usually we don't write to chips during detection, but here we don't 1958 * quite have the choice; hopefully it's OK, we are about to return 1959 * success anyway 1960 */ 1961 if ((bank & 0x07) != 0) 1962 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, 1963 bank & ~0x07); 1964 config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG); 1965 if (config & W83795_REG_CONFIG_CONFIG48) 1966 chip_name = "w83795adg"; 1967 else 1968 chip_name = "w83795g"; 1969 1970 strscpy(info->type, chip_name, I2C_NAME_SIZE); 1971 dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name, 1972 'A' + (device_id & 0xf), address); 1973 1974 return 0; 1975 } 1976 1977 #ifdef CONFIG_SENSORS_W83795_FANCTRL 1978 #define NUM_PWM_ATTRIBUTES ARRAY_SIZE(w83795_pwm[0]) 1979 #define NUM_TEMP_ATTRIBUTES ARRAY_SIZE(w83795_temp[0]) 1980 #else 1981 #define NUM_PWM_ATTRIBUTES 4 1982 #define NUM_TEMP_ATTRIBUTES 8 1983 #endif 1984 1985 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, 1986 const struct device_attribute *)) 1987 { 1988 struct w83795_data *data = dev_get_drvdata(dev); 1989 int err, i, j; 1990 1991 for (i = 0; i < ARRAY_SIZE(w83795_in); i++) { 1992 if (!(data->has_in & (1 << i))) 1993 continue; 1994 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) { 1995 if (j == 4 && !data->enable_beep) 1996 continue; 1997 err = fn(dev, &w83795_in[i][j].dev_attr); 1998 if (err) 1999 return err; 2000 } 2001 } 2002 2003 for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) { 2004 if (!(data->has_fan & (1 << i))) 2005 continue; 2006 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) { 2007 if (j == 3 && !data->enable_beep) 2008 continue; 2009 err = fn(dev, &w83795_fan[i][j].dev_attr); 2010 if (err) 2011 return err; 2012 } 2013 } 2014 2015 for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) { 2016 j = w83795_tss_useful(data, i); 2017 if (!j) 2018 continue; 2019 err = fn(dev, &w83795_tss[i].dev_attr); 2020 if (err) 2021 return err; 2022 } 2023 2024 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) { 2025 err = fn(dev, &sda_single_files[i].dev_attr); 2026 if (err) 2027 return err; 2028 } 2029 2030 if (data->enable_beep) { 2031 for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) { 2032 err = fn(dev, &sda_beep_files[i].dev_attr); 2033 if (err) 2034 return err; 2035 } 2036 } 2037 2038 for (i = 0; i < data->has_pwm; i++) { 2039 for (j = 0; j < NUM_PWM_ATTRIBUTES; j++) { 2040 err = fn(dev, &w83795_pwm[i][j].dev_attr); 2041 if (err) 2042 return err; 2043 } 2044 } 2045 2046 for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) { 2047 if (!(data->has_temp & (1 << i))) 2048 continue; 2049 for (j = 0; j < NUM_TEMP_ATTRIBUTES; j++) { 2050 if (j == 7 && !data->enable_beep) 2051 continue; 2052 err = fn(dev, &w83795_temp[i][j].dev_attr); 2053 if (err) 2054 return err; 2055 } 2056 } 2057 2058 if (data->enable_dts) { 2059 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) { 2060 if (!(data->has_dts & (1 << i))) 2061 continue; 2062 for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) { 2063 if (j == 7 && !data->enable_beep) 2064 continue; 2065 err = fn(dev, &w83795_dts[i][j].dev_attr); 2066 if (err) 2067 return err; 2068 } 2069 } 2070 } 2071 2072 return 0; 2073 } 2074 2075 /* We need a wrapper that fits in w83795_handle_files */ 2076 static int device_remove_file_wrapper(struct device *dev, 2077 const struct device_attribute *attr) 2078 { 2079 device_remove_file(dev, attr); 2080 return 0; 2081 } 2082 2083 static void w83795_check_dynamic_in_limits(struct i2c_client *client) 2084 { 2085 struct w83795_data *data = i2c_get_clientdata(client); 2086 u8 vid_ctl; 2087 int i, err_max, err_min; 2088 2089 vid_ctl = w83795_read(client, W83795_REG_VID_CTRL); 2090 2091 /* Return immediately if VRM isn't configured */ 2092 if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07) 2093 return; 2094 2095 data->has_dyn_in = (vid_ctl >> 3) & 0x07; 2096 for (i = 0; i < 2; i++) { 2097 if (!(data->has_dyn_in & (1 << i))) 2098 continue; 2099 2100 /* Voltage limits in dynamic mode, switch to read-only */ 2101 err_max = sysfs_chmod_file(&client->dev.kobj, 2102 &w83795_in[i][2].dev_attr.attr, 2103 S_IRUGO); 2104 err_min = sysfs_chmod_file(&client->dev.kobj, 2105 &w83795_in[i][3].dev_attr.attr, 2106 S_IRUGO); 2107 if (err_max || err_min) 2108 dev_warn(&client->dev, 2109 "Failed to set in%d limits read-only (%d, %d)\n", 2110 i, err_max, err_min); 2111 else 2112 dev_info(&client->dev, 2113 "in%d limits set dynamically from VID\n", i); 2114 } 2115 } 2116 2117 /* Check pins that can be used for either temperature or voltage monitoring */ 2118 static void w83795_apply_temp_config(struct w83795_data *data, u8 config, 2119 int temp_chan, int in_chan) 2120 { 2121 /* config is a 2-bit value */ 2122 switch (config) { 2123 case 0x2: /* Voltage monitoring */ 2124 data->has_in |= 1 << in_chan; 2125 break; 2126 case 0x1: /* Thermal diode */ 2127 if (temp_chan >= 4) 2128 break; 2129 data->temp_mode |= 1 << temp_chan; 2130 fallthrough; 2131 case 0x3: /* Thermistor */ 2132 data->has_temp |= 1 << temp_chan; 2133 break; 2134 } 2135 } 2136 2137 static const struct i2c_device_id w83795_id[]; 2138 2139 static int w83795_probe(struct i2c_client *client) 2140 { 2141 int i; 2142 u8 tmp; 2143 struct device *dev = &client->dev; 2144 struct w83795_data *data; 2145 int err; 2146 2147 data = devm_kzalloc(dev, sizeof(struct w83795_data), GFP_KERNEL); 2148 if (!data) 2149 return -ENOMEM; 2150 2151 i2c_set_clientdata(client, data); 2152 data->chip_type = i2c_match_id(w83795_id, client)->driver_data; 2153 data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 2154 mutex_init(&data->update_lock); 2155 2156 /* Initialize the chip */ 2157 w83795_init_client(client); 2158 2159 /* Check which voltages and fans are present */ 2160 data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1) 2161 | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8); 2162 data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1) 2163 | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8); 2164 2165 /* Check which analog temperatures and extra voltages are present */ 2166 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1); 2167 if (tmp & 0x20) 2168 data->enable_dts = 1; 2169 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16); 2170 w83795_apply_temp_config(data, tmp & 0x3, 4, 15); 2171 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 2172 w83795_apply_temp_config(data, tmp >> 6, 3, 20); 2173 w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19); 2174 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18); 2175 w83795_apply_temp_config(data, tmp & 0x3, 0, 17); 2176 2177 /* Check DTS enable status */ 2178 if (data->enable_dts) { 2179 if (1 & w83795_read(client, W83795_REG_DTSC)) 2180 data->enable_dts |= 2; 2181 data->has_dts = w83795_read(client, W83795_REG_DTSE); 2182 } 2183 2184 /* Report PECI Tbase values */ 2185 if (data->enable_dts == 1) { 2186 for (i = 0; i < 8; i++) { 2187 if (!(data->has_dts & (1 << i))) 2188 continue; 2189 tmp = w83795_read(client, W83795_REG_PECI_TBASE(i)); 2190 dev_info(&client->dev, 2191 "PECI agent %d Tbase temperature: %u\n", 2192 i + 1, (unsigned int)tmp & 0x7f); 2193 } 2194 } 2195 2196 data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f; 2197 2198 /* pwm and smart fan */ 2199 if (data->chip_type == w83795g) 2200 data->has_pwm = 8; 2201 else 2202 data->has_pwm = 2; 2203 2204 /* Check if BEEP pin is available */ 2205 if (data->chip_type == w83795g) { 2206 /* The W83795G has a dedicated BEEP pin */ 2207 data->enable_beep = 1; 2208 } else { 2209 /* 2210 * The W83795ADG has a shared pin for OVT# and BEEP, so you 2211 * can't have both 2212 */ 2213 tmp = w83795_read(client, W83795_REG_OVT_CFG); 2214 if ((tmp & OVT_CFG_SEL) == 0) 2215 data->enable_beep = 1; 2216 } 2217 2218 err = w83795_handle_files(dev, device_create_file); 2219 if (err) 2220 goto exit_remove; 2221 2222 if (data->chip_type == w83795g) 2223 w83795_check_dynamic_in_limits(client); 2224 2225 data->hwmon_dev = hwmon_device_register(dev); 2226 if (IS_ERR(data->hwmon_dev)) { 2227 err = PTR_ERR(data->hwmon_dev); 2228 goto exit_remove; 2229 } 2230 2231 return 0; 2232 2233 exit_remove: 2234 w83795_handle_files(dev, device_remove_file_wrapper); 2235 return err; 2236 } 2237 2238 static void w83795_remove(struct i2c_client *client) 2239 { 2240 struct w83795_data *data = i2c_get_clientdata(client); 2241 2242 hwmon_device_unregister(data->hwmon_dev); 2243 w83795_handle_files(&client->dev, device_remove_file_wrapper); 2244 } 2245 2246 2247 static const struct i2c_device_id w83795_id[] = { 2248 { "w83795g", w83795g }, 2249 { "w83795adg", w83795adg }, 2250 { } 2251 }; 2252 MODULE_DEVICE_TABLE(i2c, w83795_id); 2253 2254 static struct i2c_driver w83795_driver = { 2255 .driver = { 2256 .name = "w83795", 2257 }, 2258 .probe_new = w83795_probe, 2259 .remove = w83795_remove, 2260 .id_table = w83795_id, 2261 2262 .class = I2C_CLASS_HWMON, 2263 .detect = w83795_detect, 2264 .address_list = normal_i2c, 2265 }; 2266 2267 module_i2c_driver(w83795_driver); 2268 2269 MODULE_AUTHOR("Wei Song, Jean Delvare <jdelvare@suse.de>"); 2270 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver"); 2271 MODULE_LICENSE("GPL"); 2272