1 /* 2 * w83795.c - Linux kernel driver for hardware monitoring 3 * Copyright (C) 2008 Nuvoton Technology Corp. 4 * Wei Song 5 * Copyright (C) 2010 Jean Delvare <khali@linux-fr.org> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation - version 2. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 * 02110-1301 USA. 20 * 21 * Supports following chips: 22 * 23 * Chip #vin #fanin #pwm #temp #dts wchipid vendid i2c ISA 24 * w83795g 21 14 8 6 8 0x79 0x5ca3 yes no 25 * w83795adg 18 14 2 6 8 0x79 0x5ca3 yes no 26 */ 27 28 #include <linux/kernel.h> 29 #include <linux/module.h> 30 #include <linux/init.h> 31 #include <linux/slab.h> 32 #include <linux/i2c.h> 33 #include <linux/hwmon.h> 34 #include <linux/hwmon-sysfs.h> 35 #include <linux/err.h> 36 #include <linux/mutex.h> 37 #include <linux/delay.h> 38 39 /* Addresses to scan */ 40 static const unsigned short normal_i2c[] = { 41 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END 42 }; 43 44 45 static int reset; 46 module_param(reset, bool, 0); 47 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended"); 48 49 50 #define W83795_REG_BANKSEL 0x00 51 #define W83795_REG_VENDORID 0xfd 52 #define W83795_REG_CHIPID 0xfe 53 #define W83795_REG_DEVICEID 0xfb 54 #define W83795_REG_DEVICEID_A 0xff 55 56 #define W83795_REG_I2C_ADDR 0xfc 57 #define W83795_REG_CONFIG 0x01 58 #define W83795_REG_CONFIG_CONFIG48 0x04 59 #define W83795_REG_CONFIG_START 0x01 60 61 /* Multi-Function Pin Ctrl Registers */ 62 #define W83795_REG_VOLT_CTRL1 0x02 63 #define W83795_REG_VOLT_CTRL2 0x03 64 #define W83795_REG_TEMP_CTRL1 0x04 65 #define W83795_REG_TEMP_CTRL2 0x05 66 #define W83795_REG_FANIN_CTRL1 0x06 67 #define W83795_REG_FANIN_CTRL2 0x07 68 #define W83795_REG_VMIGB_CTRL 0x08 69 70 #define TEMP_READ 0 71 #define TEMP_CRIT 1 72 #define TEMP_CRIT_HYST 2 73 #define TEMP_WARN 3 74 #define TEMP_WARN_HYST 4 75 /* only crit and crit_hyst affect real-time alarm status 76 * current crit crit_hyst warn warn_hyst */ 77 static const u16 W83795_REG_TEMP[][5] = { 78 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */ 79 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */ 80 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */ 81 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */ 82 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */ 83 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */ 84 }; 85 86 #define IN_READ 0 87 #define IN_MAX 1 88 #define IN_LOW 2 89 static const u16 W83795_REG_IN[][3] = { 90 /* Current, HL, LL */ 91 {0x10, 0x70, 0x71}, /* VSEN1 */ 92 {0x11, 0x72, 0x73}, /* VSEN2 */ 93 {0x12, 0x74, 0x75}, /* VSEN3 */ 94 {0x13, 0x76, 0x77}, /* VSEN4 */ 95 {0x14, 0x78, 0x79}, /* VSEN5 */ 96 {0x15, 0x7a, 0x7b}, /* VSEN6 */ 97 {0x16, 0x7c, 0x7d}, /* VSEN7 */ 98 {0x17, 0x7e, 0x7f}, /* VSEN8 */ 99 {0x18, 0x80, 0x81}, /* VSEN9 */ 100 {0x19, 0x82, 0x83}, /* VSEN10 */ 101 {0x1A, 0x84, 0x85}, /* VSEN11 */ 102 {0x1B, 0x86, 0x87}, /* VTT */ 103 {0x1C, 0x88, 0x89}, /* 3VDD */ 104 {0x1D, 0x8a, 0x8b}, /* 3VSB */ 105 {0x1E, 0x8c, 0x8d}, /* VBAT */ 106 {0x1F, 0xa6, 0xa7}, /* VSEN12 */ 107 {0x20, 0xaa, 0xab}, /* VSEN13 */ 108 {0x21, 0x96, 0x97}, /* VSEN14 */ 109 {0x22, 0x9a, 0x9b}, /* VSEN15 */ 110 {0x23, 0x9e, 0x9f}, /* VSEN16 */ 111 {0x24, 0xa2, 0xa3}, /* VSEN17 */ 112 }; 113 #define W83795_REG_VRLSB 0x3C 114 115 static const u8 W83795_REG_IN_HL_LSB[] = { 116 0x8e, /* VSEN1-4 */ 117 0x90, /* VSEN5-8 */ 118 0x92, /* VSEN9-11 */ 119 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */ 120 0xa8, /* VSEN12 */ 121 0xac, /* VSEN13 */ 122 0x98, /* VSEN14 */ 123 0x9c, /* VSEN15 */ 124 0xa0, /* VSEN16 */ 125 0xa4, /* VSEN17 */ 126 }; 127 128 #define IN_LSB_REG(index, type) \ 129 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \ 130 : (W83795_REG_IN_HL_LSB[(index)] + 1)) 131 132 #define IN_LSB_SHIFT 0 133 #define IN_LSB_IDX 1 134 static const u8 IN_LSB_SHIFT_IDX[][2] = { 135 /* High/Low LSB shift, LSB No. */ 136 {0x00, 0x00}, /* VSEN1 */ 137 {0x02, 0x00}, /* VSEN2 */ 138 {0x04, 0x00}, /* VSEN3 */ 139 {0x06, 0x00}, /* VSEN4 */ 140 {0x00, 0x01}, /* VSEN5 */ 141 {0x02, 0x01}, /* VSEN6 */ 142 {0x04, 0x01}, /* VSEN7 */ 143 {0x06, 0x01}, /* VSEN8 */ 144 {0x00, 0x02}, /* VSEN9 */ 145 {0x02, 0x02}, /* VSEN10 */ 146 {0x04, 0x02}, /* VSEN11 */ 147 {0x00, 0x03}, /* VTT */ 148 {0x02, 0x03}, /* 3VDD */ 149 {0x04, 0x03}, /* 3VSB */ 150 {0x06, 0x03}, /* VBAT */ 151 {0x06, 0x04}, /* VSEN12 */ 152 {0x06, 0x05}, /* VSEN13 */ 153 {0x06, 0x06}, /* VSEN14 */ 154 {0x06, 0x07}, /* VSEN15 */ 155 {0x06, 0x08}, /* VSEN16 */ 156 {0x06, 0x09}, /* VSEN17 */ 157 }; 158 159 160 #define W83795_REG_FAN(index) (0x2E + (index)) 161 #define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index)) 162 #define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2) 163 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \ 164 (((index) & 1) ? 4 : 0) 165 166 #define W83795_REG_VID_CTRL 0x6A 167 168 #define W83795_REG_ALARM(index) (0x41 + (index)) 169 #define W83795_REG_BEEP(index) (0x50 + (index)) 170 171 #define W83795_REG_CLR_CHASSIS 0x4D 172 173 174 #define W83795_REG_FCMS1 0x201 175 #define W83795_REG_FCMS2 0x208 176 #define W83795_REG_TFMR(index) (0x202 + (index)) 177 #define W83795_REG_FOMC 0x20F 178 179 #define W83795_REG_TSS(index) (0x209 + (index)) 180 181 #define TSS_MAP_RESERVED 0xff 182 static const u8 tss_map[4][6] = { 183 { 0, 1, 2, 3, 4, 5}, 184 { 6, 7, 8, 9, 0, 1}, 185 {10, 11, 12, 13, 2, 3}, 186 { 4, 5, 4, 5, TSS_MAP_RESERVED, TSS_MAP_RESERVED}, 187 }; 188 189 #define PWM_OUTPUT 0 190 #define PWM_FREQ 1 191 #define PWM_START 2 192 #define PWM_NONSTOP 3 193 #define PWM_STOP_TIME 4 194 #define W83795_REG_PWM(index, nr) (0x210 + (nr) * 8 + (index)) 195 196 #define W83795_REG_FTSH(index) (0x240 + (index) * 2) 197 #define W83795_REG_FTSL(index) (0x241 + (index) * 2) 198 #define W83795_REG_TFTS 0x250 199 200 #define TEMP_PWM_TTTI 0 201 #define TEMP_PWM_CTFS 1 202 #define TEMP_PWM_HCT 2 203 #define TEMP_PWM_HOT 3 204 #define W83795_REG_TTTI(index) (0x260 + (index)) 205 #define W83795_REG_CTFS(index) (0x268 + (index)) 206 #define W83795_REG_HT(index) (0x270 + (index)) 207 208 #define SF4_TEMP 0 209 #define SF4_PWM 1 210 #define W83795_REG_SF4_TEMP(temp_num, index) \ 211 (0x280 + 0x10 * (temp_num) + (index)) 212 #define W83795_REG_SF4_PWM(temp_num, index) \ 213 (0x288 + 0x10 * (temp_num) + (index)) 214 215 #define W83795_REG_DTSC 0x301 216 #define W83795_REG_DTSE 0x302 217 #define W83795_REG_DTS(index) (0x26 + (index)) 218 #define W83795_REG_PECI_TBASE(index) (0x320 + (index)) 219 220 #define DTS_CRIT 0 221 #define DTS_CRIT_HYST 1 222 #define DTS_WARN 2 223 #define DTS_WARN_HYST 3 224 #define W83795_REG_DTS_EXT(index) (0xB2 + (index)) 225 226 #define SETUP_PWM_DEFAULT 0 227 #define SETUP_PWM_UPTIME 1 228 #define SETUP_PWM_DOWNTIME 2 229 #define W83795_REG_SETUP_PWM(index) (0x20C + (index)) 230 231 static inline u16 in_from_reg(u8 index, u16 val) 232 { 233 /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */ 234 if (index >= 12 && index <= 14) 235 return val * 6; 236 else 237 return val * 2; 238 } 239 240 static inline u16 in_to_reg(u8 index, u16 val) 241 { 242 if (index >= 12 && index <= 14) 243 return val / 6; 244 else 245 return val / 2; 246 } 247 248 static inline unsigned long fan_from_reg(u16 val) 249 { 250 if ((val == 0xfff) || (val == 0)) 251 return 0; 252 return 1350000UL / val; 253 } 254 255 static inline u16 fan_to_reg(long rpm) 256 { 257 if (rpm <= 0) 258 return 0x0fff; 259 return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe); 260 } 261 262 static inline unsigned long time_from_reg(u8 reg) 263 { 264 return reg * 100; 265 } 266 267 static inline u8 time_to_reg(unsigned long val) 268 { 269 return SENSORS_LIMIT((val + 50) / 100, 0, 0xff); 270 } 271 272 static inline long temp_from_reg(s8 reg) 273 { 274 return reg * 1000; 275 } 276 277 static inline s8 temp_to_reg(long val, s8 min, s8 max) 278 { 279 return SENSORS_LIMIT(val / 1000, min, max); 280 } 281 282 static const u16 pwm_freq_cksel0[16] = { 283 1024, 512, 341, 256, 205, 171, 146, 128, 284 85, 64, 32, 16, 8, 4, 2, 1 285 }; 286 287 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin) 288 { 289 unsigned long base_clock; 290 291 if (reg & 0x80) { 292 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 293 return base_clock / ((reg & 0x7f) + 1); 294 } else 295 return pwm_freq_cksel0[reg & 0x0f]; 296 } 297 298 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin) 299 { 300 unsigned long base_clock; 301 u8 reg0, reg1; 302 unsigned long best0, best1; 303 304 /* Best fit for cksel = 0 */ 305 for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) { 306 if (val > (pwm_freq_cksel0[reg0] + 307 pwm_freq_cksel0[reg0 + 1]) / 2) 308 break; 309 } 310 if (val < 375) /* cksel = 1 can't beat this */ 311 return reg0; 312 best0 = pwm_freq_cksel0[reg0]; 313 314 /* Best fit for cksel = 1 */ 315 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256); 316 reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128); 317 best1 = base_clock / reg1; 318 reg1 = 0x80 | (reg1 - 1); 319 320 /* Choose the closest one */ 321 if (abs(val - best0) > abs(val - best1)) 322 return reg1; 323 else 324 return reg0; 325 } 326 327 enum chip_types {w83795g, w83795adg}; 328 329 struct w83795_data { 330 struct device *hwmon_dev; 331 struct mutex update_lock; 332 unsigned long last_updated; /* In jiffies */ 333 enum chip_types chip_type; 334 335 u8 bank; 336 337 u32 has_in; /* Enable monitor VIN or not */ 338 u8 has_dyn_in; /* Only in2-0 can have this */ 339 u16 in[21][3]; /* Register value, read/high/low */ 340 u8 in_lsb[10][3]; /* LSB Register value, high/low */ 341 u8 has_gain; /* has gain: in17-20 * 8 */ 342 343 u16 has_fan; /* Enable fan14-1 or not */ 344 u16 fan[14]; /* Register value combine */ 345 u16 fan_min[14]; /* Register value combine */ 346 347 u8 has_temp; /* Enable monitor temp6-1 or not */ 348 s8 temp[6][5]; /* current, crit, crit_hyst, warn, warn_hyst */ 349 u8 temp_read_vrlsb[6]; 350 u8 temp_mode; /* Bit vector, 0 = TR, 1 = TD */ 351 u8 temp_src[3]; /* Register value */ 352 353 u8 enable_dts; /* Enable PECI and SB-TSI, 354 * bit 0: =1 enable, =0 disable, 355 * bit 1: =1 AMD SB-TSI, =0 Intel PECI */ 356 u8 has_dts; /* Enable monitor DTS temp */ 357 s8 dts[8]; /* Register value */ 358 u8 dts_read_vrlsb[8]; /* Register value */ 359 s8 dts_ext[4]; /* Register value */ 360 361 u8 has_pwm; /* 795g supports 8 pwm, 795adg only supports 2, 362 * no config register, only affected by chip 363 * type */ 364 u8 pwm[8][5]; /* Register value, output, freq, start, 365 * non stop, stop time */ 366 u16 clkin; /* CLKIN frequency in kHz */ 367 u8 pwm_fcms[2]; /* Register value */ 368 u8 pwm_tfmr[6]; /* Register value */ 369 u8 pwm_fomc; /* Register value */ 370 371 u16 target_speed[8]; /* Register value, target speed for speed 372 * cruise */ 373 u8 tol_speed; /* tolerance of target speed */ 374 u8 pwm_temp[6][4]; /* TTTI, CTFS, HCT, HOT */ 375 u8 sf4_reg[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */ 376 377 u8 setup_pwm[3]; /* Register value */ 378 379 u8 alarms[6]; /* Register value */ 380 u8 beeps[6]; /* Register value */ 381 382 char 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; 456 457 /* Read the voltage limits */ 458 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 459 if (!(data->has_in & (1 << i))) 460 continue; 461 data->in[i][IN_MAX] = 462 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 463 data->in[i][IN_LOW] = 464 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 465 } 466 for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) { 467 if ((i == 2 && data->chip_type == w83795adg) || 468 (i >= 4 && !(data->has_in & (1 << (i + 11))))) 469 continue; 470 data->in_lsb[i][IN_MAX] = 471 w83795_read(client, IN_LSB_REG(i, IN_MAX)); 472 data->in_lsb[i][IN_LOW] = 473 w83795_read(client, IN_LSB_REG(i, IN_LOW)); 474 } 475 476 /* Read the fan limits */ 477 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 478 u8 lsb; 479 480 /* Each register contains LSB for 2 fans, but we want to 481 * read it only once to save time */ 482 if ((i & 1) == 0 && (data->has_fan & (3 << i))) 483 lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i)); 484 485 if (!(data->has_fan & (1 << i))) 486 continue; 487 data->fan_min[i] = 488 w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4; 489 data->fan_min[i] |= 490 (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F; 491 } 492 493 /* Read the temperature limits */ 494 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 495 if (!(data->has_temp & (1 << i))) 496 continue; 497 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++) 498 data->temp[i][limit] = 499 w83795_read(client, W83795_REG_TEMP[i][limit]); 500 } 501 502 /* Read the DTS limits */ 503 if (data->enable_dts) { 504 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++) 505 data->dts_ext[limit] = 506 w83795_read(client, W83795_REG_DTS_EXT(limit)); 507 } 508 509 /* Read beep settings */ 510 for (i = 0; i < ARRAY_SIZE(data->beeps); i++) 511 data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i)); 512 513 data->valid_limits = 1; 514 } 515 516 static struct w83795_data *w83795_update_pwm_config(struct device *dev) 517 { 518 struct i2c_client *client = to_i2c_client(dev); 519 struct w83795_data *data = i2c_get_clientdata(client); 520 int i, tmp; 521 522 mutex_lock(&data->update_lock); 523 524 if (data->valid_pwm_config) 525 goto END; 526 527 /* Read temperature source selection */ 528 for (i = 0; i < ARRAY_SIZE(data->temp_src); i++) 529 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i)); 530 531 /* Read automatic fan speed control settings */ 532 data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1); 533 data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2); 534 for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++) 535 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i)); 536 data->pwm_fomc = w83795_read(client, W83795_REG_FOMC); 537 for (i = 0; i < data->has_pwm; i++) { 538 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++) 539 data->pwm[i][tmp] = 540 w83795_read(client, W83795_REG_PWM(i, tmp)); 541 } 542 for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) { 543 data->target_speed[i] = 544 w83795_read(client, W83795_REG_FTSH(i)) << 4; 545 data->target_speed[i] |= 546 w83795_read(client, W83795_REG_FTSL(i)) >> 4; 547 } 548 data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f; 549 550 for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) { 551 data->pwm_temp[i][TEMP_PWM_TTTI] = 552 w83795_read(client, W83795_REG_TTTI(i)) & 0x7f; 553 data->pwm_temp[i][TEMP_PWM_CTFS] = 554 w83795_read(client, W83795_REG_CTFS(i)); 555 tmp = w83795_read(client, W83795_REG_HT(i)); 556 data->pwm_temp[i][TEMP_PWM_HCT] = tmp >> 4; 557 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f; 558 } 559 560 /* Read SmartFanIV trip points */ 561 for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) { 562 for (tmp = 0; tmp < 7; tmp++) { 563 data->sf4_reg[i][SF4_TEMP][tmp] = 564 w83795_read(client, 565 W83795_REG_SF4_TEMP(i, tmp)); 566 data->sf4_reg[i][SF4_PWM][tmp] = 567 w83795_read(client, W83795_REG_SF4_PWM(i, tmp)); 568 } 569 } 570 571 /* Read setup PWM */ 572 for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++) 573 data->setup_pwm[i] = 574 w83795_read(client, W83795_REG_SETUP_PWM(i)); 575 576 data->valid_pwm_config = 1; 577 578 END: 579 mutex_unlock(&data->update_lock); 580 return data; 581 } 582 583 static struct w83795_data *w83795_update_device(struct device *dev) 584 { 585 struct i2c_client *client = to_i2c_client(dev); 586 struct w83795_data *data = i2c_get_clientdata(client); 587 u16 tmp; 588 int i; 589 590 mutex_lock(&data->update_lock); 591 592 if (!data->valid_limits) 593 w83795_update_limits(client); 594 595 if (!(time_after(jiffies, data->last_updated + HZ * 2) 596 || !data->valid)) 597 goto END; 598 599 /* Update the voltages value */ 600 for (i = 0; i < ARRAY_SIZE(data->in); i++) { 601 if (!(data->has_in & (1 << i))) 602 continue; 603 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2; 604 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6; 605 data->in[i][IN_READ] = tmp; 606 } 607 608 /* in0-2 can have dynamic limits (W83795G only) */ 609 if (data->has_dyn_in) { 610 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX)); 611 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW)); 612 613 for (i = 0; i < 3; i++) { 614 if (!(data->has_dyn_in & (1 << i))) 615 continue; 616 data->in[i][IN_MAX] = 617 w83795_read(client, W83795_REG_IN[i][IN_MAX]); 618 data->in[i][IN_LOW] = 619 w83795_read(client, W83795_REG_IN[i][IN_LOW]); 620 data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03; 621 data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03; 622 } 623 } 624 625 /* Update fan */ 626 for (i = 0; i < ARRAY_SIZE(data->fan); i++) { 627 if (!(data->has_fan & (1 << i))) 628 continue; 629 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4; 630 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4; 631 } 632 633 /* Update temperature */ 634 for (i = 0; i < ARRAY_SIZE(data->temp); i++) { 635 data->temp[i][TEMP_READ] = 636 w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]); 637 data->temp_read_vrlsb[i] = 638 w83795_read(client, W83795_REG_VRLSB); 639 } 640 641 /* Update dts temperature */ 642 if (data->enable_dts) { 643 for (i = 0; i < ARRAY_SIZE(data->dts); i++) { 644 if (!(data->has_dts & (1 << i))) 645 continue; 646 data->dts[i] = 647 w83795_read(client, W83795_REG_DTS(i)); 648 data->dts_read_vrlsb[i] = 649 w83795_read(client, W83795_REG_VRLSB); 650 } 651 } 652 653 /* Update pwm output */ 654 for (i = 0; i < data->has_pwm; i++) { 655 data->pwm[i][PWM_OUTPUT] = 656 w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT)); 657 } 658 659 /* update alarm */ 660 for (i = 0; i < ARRAY_SIZE(data->alarms); i++) 661 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i)); 662 663 data->last_updated = jiffies; 664 data->valid = 1; 665 666 END: 667 mutex_unlock(&data->update_lock); 668 return data; 669 } 670 671 /* 672 * Sysfs attributes 673 */ 674 675 #define ALARM_STATUS 0 676 #define BEEP_ENABLE 1 677 static ssize_t 678 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf) 679 { 680 struct w83795_data *data = w83795_update_device(dev); 681 struct sensor_device_attribute_2 *sensor_attr = 682 to_sensor_dev_attr_2(attr); 683 int nr = sensor_attr->nr; 684 int index = sensor_attr->index >> 3; 685 int bit = sensor_attr->index & 0x07; 686 u8 val; 687 688 if (nr == ALARM_STATUS) 689 val = (data->alarms[index] >> bit) & 1; 690 else /* BEEP_ENABLE */ 691 val = (data->beeps[index] >> bit) & 1; 692 693 return sprintf(buf, "%u\n", val); 694 } 695 696 static ssize_t 697 store_beep(struct device *dev, struct device_attribute *attr, 698 const char *buf, size_t count) 699 { 700 struct i2c_client *client = to_i2c_client(dev); 701 struct w83795_data *data = i2c_get_clientdata(client); 702 struct sensor_device_attribute_2 *sensor_attr = 703 to_sensor_dev_attr_2(attr); 704 int index = sensor_attr->index >> 3; 705 int shift = sensor_attr->index & 0x07; 706 u8 beep_bit = 1 << shift; 707 unsigned long val; 708 709 if (strict_strtoul(buf, 10, &val) < 0) 710 return -EINVAL; 711 if (val != 0 && val != 1) 712 return -EINVAL; 713 714 mutex_lock(&data->update_lock); 715 data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index)); 716 data->beeps[index] &= ~beep_bit; 717 data->beeps[index] |= val << shift; 718 w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]); 719 mutex_unlock(&data->update_lock); 720 721 return count; 722 } 723 724 /* Write 0 to clear chassis alarm */ 725 static ssize_t 726 store_chassis_clear(struct device *dev, 727 struct device_attribute *attr, const char *buf, 728 size_t count) 729 { 730 struct i2c_client *client = to_i2c_client(dev); 731 struct w83795_data *data = i2c_get_clientdata(client); 732 unsigned long val; 733 734 if (strict_strtoul(buf, 10, &val) < 0 || val != 0) 735 return -EINVAL; 736 737 mutex_lock(&data->update_lock); 738 val = w83795_read(client, W83795_REG_CLR_CHASSIS); 739 val |= 0x80; 740 w83795_write(client, W83795_REG_CLR_CHASSIS, val); 741 mutex_unlock(&data->update_lock); 742 return count; 743 } 744 745 #define FAN_INPUT 0 746 #define FAN_MIN 1 747 static ssize_t 748 show_fan(struct device *dev, struct device_attribute *attr, char *buf) 749 { 750 struct sensor_device_attribute_2 *sensor_attr = 751 to_sensor_dev_attr_2(attr); 752 int nr = sensor_attr->nr; 753 int index = sensor_attr->index; 754 struct w83795_data *data = w83795_update_device(dev); 755 u16 val; 756 757 if (nr == FAN_INPUT) 758 val = data->fan[index] & 0x0fff; 759 else 760 val = data->fan_min[index] & 0x0fff; 761 762 return sprintf(buf, "%lu\n", fan_from_reg(val)); 763 } 764 765 static ssize_t 766 store_fan_min(struct device *dev, struct device_attribute *attr, 767 const char *buf, size_t count) 768 { 769 struct sensor_device_attribute_2 *sensor_attr = 770 to_sensor_dev_attr_2(attr); 771 int index = sensor_attr->index; 772 struct i2c_client *client = to_i2c_client(dev); 773 struct w83795_data *data = i2c_get_clientdata(client); 774 unsigned long val; 775 776 if (strict_strtoul(buf, 10, &val)) 777 return -EINVAL; 778 val = fan_to_reg(val); 779 780 mutex_lock(&data->update_lock); 781 data->fan_min[index] = val; 782 w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff); 783 val &= 0x0f; 784 if (index & 1) { 785 val <<= 4; 786 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 787 & 0x0f; 788 } else { 789 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index)) 790 & 0xf0; 791 } 792 w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff); 793 mutex_unlock(&data->update_lock); 794 795 return count; 796 } 797 798 static ssize_t 799 show_pwm(struct device *dev, struct device_attribute *attr, char *buf) 800 { 801 struct w83795_data *data; 802 struct sensor_device_attribute_2 *sensor_attr = 803 to_sensor_dev_attr_2(attr); 804 int nr = sensor_attr->nr; 805 int index = sensor_attr->index; 806 unsigned int val; 807 808 data = nr == PWM_OUTPUT ? w83795_update_device(dev) 809 : w83795_update_pwm_config(dev); 810 811 switch (nr) { 812 case PWM_STOP_TIME: 813 val = time_from_reg(data->pwm[index][nr]); 814 break; 815 case PWM_FREQ: 816 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin); 817 break; 818 default: 819 val = data->pwm[index][nr]; 820 break; 821 } 822 823 return sprintf(buf, "%u\n", val); 824 } 825 826 static ssize_t 827 store_pwm(struct device *dev, struct device_attribute *attr, 828 const char *buf, size_t count) 829 { 830 struct i2c_client *client = to_i2c_client(dev); 831 struct w83795_data *data = i2c_get_clientdata(client); 832 struct sensor_device_attribute_2 *sensor_attr = 833 to_sensor_dev_attr_2(attr); 834 int nr = sensor_attr->nr; 835 int index = sensor_attr->index; 836 unsigned long val; 837 838 if (strict_strtoul(buf, 10, &val) < 0) 839 return -EINVAL; 840 841 mutex_lock(&data->update_lock); 842 switch (nr) { 843 case PWM_STOP_TIME: 844 val = time_to_reg(val); 845 break; 846 case PWM_FREQ: 847 val = pwm_freq_to_reg(val, data->clkin); 848 break; 849 default: 850 val = SENSORS_LIMIT(val, 0, 0xff); 851 break; 852 } 853 w83795_write(client, W83795_REG_PWM(index, nr), val); 854 data->pwm[index][nr] = val; 855 mutex_unlock(&data->update_lock); 856 return count; 857 } 858 859 static ssize_t 860 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf) 861 { 862 struct sensor_device_attribute_2 *sensor_attr = 863 to_sensor_dev_attr_2(attr); 864 struct w83795_data *data = w83795_update_pwm_config(dev); 865 int index = sensor_attr->index; 866 u8 tmp; 867 868 /* Speed cruise mode */ 869 if (data->pwm_fcms[0] & (1 << index)) { 870 tmp = 2; 871 goto out; 872 } 873 /* Thermal cruise or SmartFan IV mode */ 874 for (tmp = 0; tmp < 6; tmp++) { 875 if (data->pwm_tfmr[tmp] & (1 << index)) { 876 tmp = 3; 877 goto out; 878 } 879 } 880 /* Manual mode */ 881 tmp = 1; 882 883 out: 884 return sprintf(buf, "%u\n", tmp); 885 } 886 887 static ssize_t 888 store_pwm_enable(struct device *dev, struct device_attribute *attr, 889 const char *buf, size_t count) 890 { 891 struct i2c_client *client = to_i2c_client(dev); 892 struct w83795_data *data = w83795_update_pwm_config(dev); 893 struct sensor_device_attribute_2 *sensor_attr = 894 to_sensor_dev_attr_2(attr); 895 int index = sensor_attr->index; 896 unsigned long val; 897 int i; 898 899 if (strict_strtoul(buf, 10, &val) < 0) 900 return -EINVAL; 901 if (val < 1 || val > 2) 902 return -EINVAL; 903 904 mutex_lock(&data->update_lock); 905 switch (val) { 906 case 1: 907 /* Clear speed cruise mode bits */ 908 data->pwm_fcms[0] &= ~(1 << index); 909 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 910 /* Clear thermal cruise mode bits */ 911 for (i = 0; i < 6; i++) { 912 data->pwm_tfmr[i] &= ~(1 << index); 913 w83795_write(client, W83795_REG_TFMR(i), 914 data->pwm_tfmr[i]); 915 } 916 break; 917 case 2: 918 data->pwm_fcms[0] |= (1 << index); 919 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]); 920 break; 921 } 922 mutex_unlock(&data->update_lock); 923 return count; 924 } 925 926 static ssize_t 927 show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf) 928 { 929 struct w83795_data *data = w83795_update_pwm_config(dev); 930 int index = to_sensor_dev_attr_2(attr)->index; 931 unsigned int mode; 932 933 if (data->pwm_fomc & (1 << index)) 934 mode = 0; /* DC */ 935 else 936 mode = 1; /* PWM */ 937 938 return sprintf(buf, "%u\n", mode); 939 } 940 941 /* 942 * Check whether a given temperature source can ever be useful. 943 * Returns the number of selectable temperature channels which are 944 * enabled. 945 */ 946 static int w83795_tss_useful(const struct w83795_data *data, int tsrc) 947 { 948 int useful = 0, i; 949 950 for (i = 0; i < 4; i++) { 951 if (tss_map[i][tsrc] == TSS_MAP_RESERVED) 952 continue; 953 if (tss_map[i][tsrc] < 6) /* Analog */ 954 useful += (data->has_temp >> tss_map[i][tsrc]) & 1; 955 else /* Digital */ 956 useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1; 957 } 958 959 return useful; 960 } 961 962 static ssize_t 963 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf) 964 { 965 struct sensor_device_attribute_2 *sensor_attr = 966 to_sensor_dev_attr_2(attr); 967 struct w83795_data *data = w83795_update_pwm_config(dev); 968 int index = sensor_attr->index; 969 u8 val = index / 2; 970 u8 tmp = data->temp_src[val]; 971 972 if (index & 1) 973 val = 4; 974 else 975 val = 0; 976 tmp >>= val; 977 tmp &= 0x0f; 978 979 return sprintf(buf, "%u\n", tmp); 980 } 981 982 static ssize_t 983 store_temp_src(struct device *dev, struct device_attribute *attr, 984 const char *buf, size_t count) 985 { 986 struct i2c_client *client = to_i2c_client(dev); 987 struct w83795_data *data = w83795_update_pwm_config(dev); 988 struct sensor_device_attribute_2 *sensor_attr = 989 to_sensor_dev_attr_2(attr); 990 int index = sensor_attr->index; 991 unsigned long tmp; 992 u8 val = index / 2; 993 994 if (strict_strtoul(buf, 10, &tmp) < 0) 995 return -EINVAL; 996 tmp = SENSORS_LIMIT(tmp, 0, 15); 997 998 mutex_lock(&data->update_lock); 999 if (index & 1) { 1000 tmp <<= 4; 1001 data->temp_src[val] &= 0x0f; 1002 } else { 1003 data->temp_src[val] &= 0xf0; 1004 } 1005 data->temp_src[val] |= tmp; 1006 w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]); 1007 mutex_unlock(&data->update_lock); 1008 1009 return count; 1010 } 1011 1012 #define TEMP_PWM_ENABLE 0 1013 #define TEMP_PWM_FAN_MAP 1 1014 static ssize_t 1015 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 1016 char *buf) 1017 { 1018 struct w83795_data *data = w83795_update_pwm_config(dev); 1019 struct sensor_device_attribute_2 *sensor_attr = 1020 to_sensor_dev_attr_2(attr); 1021 int nr = sensor_attr->nr; 1022 int index = sensor_attr->index; 1023 u8 tmp = 0xff; 1024 1025 switch (nr) { 1026 case TEMP_PWM_ENABLE: 1027 tmp = (data->pwm_fcms[1] >> index) & 1; 1028 if (tmp) 1029 tmp = 4; 1030 else 1031 tmp = 3; 1032 break; 1033 case TEMP_PWM_FAN_MAP: 1034 tmp = data->pwm_tfmr[index]; 1035 break; 1036 } 1037 1038 return sprintf(buf, "%u\n", tmp); 1039 } 1040 1041 static ssize_t 1042 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr, 1043 const char *buf, size_t count) 1044 { 1045 struct i2c_client *client = to_i2c_client(dev); 1046 struct w83795_data *data = w83795_update_pwm_config(dev); 1047 struct sensor_device_attribute_2 *sensor_attr = 1048 to_sensor_dev_attr_2(attr); 1049 int nr = sensor_attr->nr; 1050 int index = sensor_attr->index; 1051 unsigned long tmp; 1052 1053 if (strict_strtoul(buf, 10, &tmp) < 0) 1054 return -EINVAL; 1055 1056 switch (nr) { 1057 case TEMP_PWM_ENABLE: 1058 if (tmp != 3 && tmp != 4) 1059 return -EINVAL; 1060 tmp -= 3; 1061 mutex_lock(&data->update_lock); 1062 data->pwm_fcms[1] &= ~(1 << index); 1063 data->pwm_fcms[1] |= tmp << index; 1064 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]); 1065 mutex_unlock(&data->update_lock); 1066 break; 1067 case TEMP_PWM_FAN_MAP: 1068 mutex_lock(&data->update_lock); 1069 tmp = SENSORS_LIMIT(tmp, 0, 0xff); 1070 w83795_write(client, W83795_REG_TFMR(index), tmp); 1071 data->pwm_tfmr[index] = tmp; 1072 mutex_unlock(&data->update_lock); 1073 break; 1074 } 1075 return count; 1076 } 1077 1078 #define FANIN_TARGET 0 1079 #define FANIN_TOL 1 1080 static ssize_t 1081 show_fanin(struct device *dev, struct device_attribute *attr, char *buf) 1082 { 1083 struct w83795_data *data = w83795_update_pwm_config(dev); 1084 struct sensor_device_attribute_2 *sensor_attr = 1085 to_sensor_dev_attr_2(attr); 1086 int nr = sensor_attr->nr; 1087 int index = sensor_attr->index; 1088 u16 tmp = 0; 1089 1090 switch (nr) { 1091 case FANIN_TARGET: 1092 tmp = fan_from_reg(data->target_speed[index]); 1093 break; 1094 case FANIN_TOL: 1095 tmp = data->tol_speed; 1096 break; 1097 } 1098 1099 return sprintf(buf, "%u\n", tmp); 1100 } 1101 1102 static ssize_t 1103 store_fanin(struct device *dev, struct device_attribute *attr, 1104 const char *buf, size_t count) 1105 { 1106 struct i2c_client *client = to_i2c_client(dev); 1107 struct w83795_data *data = i2c_get_clientdata(client); 1108 struct sensor_device_attribute_2 *sensor_attr = 1109 to_sensor_dev_attr_2(attr); 1110 int nr = sensor_attr->nr; 1111 int index = sensor_attr->index; 1112 unsigned long val; 1113 1114 if (strict_strtoul(buf, 10, &val) < 0) 1115 return -EINVAL; 1116 1117 mutex_lock(&data->update_lock); 1118 switch (nr) { 1119 case FANIN_TARGET: 1120 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff)); 1121 w83795_write(client, W83795_REG_FTSH(index), val >> 4); 1122 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0); 1123 data->target_speed[index] = val; 1124 break; 1125 case FANIN_TOL: 1126 val = SENSORS_LIMIT(val, 0, 0x3f); 1127 w83795_write(client, W83795_REG_TFTS, val); 1128 data->tol_speed = val; 1129 break; 1130 } 1131 mutex_unlock(&data->update_lock); 1132 1133 return count; 1134 } 1135 1136 1137 static ssize_t 1138 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1139 { 1140 struct w83795_data *data = w83795_update_pwm_config(dev); 1141 struct sensor_device_attribute_2 *sensor_attr = 1142 to_sensor_dev_attr_2(attr); 1143 int nr = sensor_attr->nr; 1144 int index = sensor_attr->index; 1145 long tmp = temp_from_reg(data->pwm_temp[index][nr]); 1146 1147 return sprintf(buf, "%ld\n", tmp); 1148 } 1149 1150 static ssize_t 1151 store_temp_pwm(struct device *dev, struct device_attribute *attr, 1152 const char *buf, size_t count) 1153 { 1154 struct i2c_client *client = to_i2c_client(dev); 1155 struct w83795_data *data = i2c_get_clientdata(client); 1156 struct sensor_device_attribute_2 *sensor_attr = 1157 to_sensor_dev_attr_2(attr); 1158 int nr = sensor_attr->nr; 1159 int index = sensor_attr->index; 1160 unsigned long val; 1161 u8 tmp; 1162 1163 if (strict_strtoul(buf, 10, &val) < 0) 1164 return -EINVAL; 1165 val /= 1000; 1166 1167 mutex_lock(&data->update_lock); 1168 switch (nr) { 1169 case TEMP_PWM_TTTI: 1170 val = SENSORS_LIMIT(val, 0, 0x7f); 1171 w83795_write(client, W83795_REG_TTTI(index), val); 1172 break; 1173 case TEMP_PWM_CTFS: 1174 val = SENSORS_LIMIT(val, 0, 0x7f); 1175 w83795_write(client, W83795_REG_CTFS(index), val); 1176 break; 1177 case TEMP_PWM_HCT: 1178 val = SENSORS_LIMIT(val, 0, 0x0f); 1179 tmp = w83795_read(client, W83795_REG_HT(index)); 1180 tmp &= 0x0f; 1181 tmp |= (val << 4) & 0xf0; 1182 w83795_write(client, W83795_REG_HT(index), tmp); 1183 break; 1184 case TEMP_PWM_HOT: 1185 val = SENSORS_LIMIT(val, 0, 0x0f); 1186 tmp = w83795_read(client, W83795_REG_HT(index)); 1187 tmp &= 0xf0; 1188 tmp |= val & 0x0f; 1189 w83795_write(client, W83795_REG_HT(index), tmp); 1190 break; 1191 } 1192 data->pwm_temp[index][nr] = val; 1193 mutex_unlock(&data->update_lock); 1194 1195 return count; 1196 } 1197 1198 static ssize_t 1199 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf) 1200 { 1201 struct w83795_data *data = w83795_update_pwm_config(dev); 1202 struct sensor_device_attribute_2 *sensor_attr = 1203 to_sensor_dev_attr_2(attr); 1204 int nr = sensor_attr->nr; 1205 int index = sensor_attr->index; 1206 1207 return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]); 1208 } 1209 1210 static ssize_t 1211 store_sf4_pwm(struct device *dev, struct device_attribute *attr, 1212 const char *buf, size_t count) 1213 { 1214 struct i2c_client *client = to_i2c_client(dev); 1215 struct w83795_data *data = i2c_get_clientdata(client); 1216 struct sensor_device_attribute_2 *sensor_attr = 1217 to_sensor_dev_attr_2(attr); 1218 int nr = sensor_attr->nr; 1219 int index = sensor_attr->index; 1220 unsigned long val; 1221 1222 if (strict_strtoul(buf, 10, &val) < 0) 1223 return -EINVAL; 1224 1225 mutex_lock(&data->update_lock); 1226 w83795_write(client, W83795_REG_SF4_PWM(index, nr), val); 1227 data->sf4_reg[index][SF4_PWM][nr] = val; 1228 mutex_unlock(&data->update_lock); 1229 1230 return count; 1231 } 1232 1233 static ssize_t 1234 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf) 1235 { 1236 struct w83795_data *data = w83795_update_pwm_config(dev); 1237 struct sensor_device_attribute_2 *sensor_attr = 1238 to_sensor_dev_attr_2(attr); 1239 int nr = sensor_attr->nr; 1240 int index = sensor_attr->index; 1241 1242 return sprintf(buf, "%u\n", 1243 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000); 1244 } 1245 1246 static ssize_t 1247 store_sf4_temp(struct device *dev, struct device_attribute *attr, 1248 const char *buf, size_t count) 1249 { 1250 struct i2c_client *client = to_i2c_client(dev); 1251 struct w83795_data *data = i2c_get_clientdata(client); 1252 struct sensor_device_attribute_2 *sensor_attr = 1253 to_sensor_dev_attr_2(attr); 1254 int nr = sensor_attr->nr; 1255 int index = sensor_attr->index; 1256 unsigned long val; 1257 1258 if (strict_strtoul(buf, 10, &val) < 0) 1259 return -EINVAL; 1260 val /= 1000; 1261 1262 mutex_lock(&data->update_lock); 1263 w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val); 1264 data->sf4_reg[index][SF4_TEMP][nr] = val; 1265 mutex_unlock(&data->update_lock); 1266 1267 return count; 1268 } 1269 1270 1271 static ssize_t 1272 show_temp(struct device *dev, struct device_attribute *attr, char *buf) 1273 { 1274 struct sensor_device_attribute_2 *sensor_attr = 1275 to_sensor_dev_attr_2(attr); 1276 int nr = sensor_attr->nr; 1277 int index = sensor_attr->index; 1278 struct w83795_data *data = w83795_update_device(dev); 1279 long temp = temp_from_reg(data->temp[index][nr]); 1280 1281 if (nr == TEMP_READ) 1282 temp += (data->temp_read_vrlsb[index] >> 6) * 250; 1283 return sprintf(buf, "%ld\n", temp); 1284 } 1285 1286 static ssize_t 1287 store_temp(struct device *dev, struct device_attribute *attr, 1288 const char *buf, size_t count) 1289 { 1290 struct sensor_device_attribute_2 *sensor_attr = 1291 to_sensor_dev_attr_2(attr); 1292 int nr = sensor_attr->nr; 1293 int index = sensor_attr->index; 1294 struct i2c_client *client = to_i2c_client(dev); 1295 struct w83795_data *data = i2c_get_clientdata(client); 1296 long tmp; 1297 1298 if (strict_strtol(buf, 10, &tmp) < 0) 1299 return -EINVAL; 1300 1301 mutex_lock(&data->update_lock); 1302 data->temp[index][nr] = temp_to_reg(tmp, -128, 127); 1303 w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]); 1304 mutex_unlock(&data->update_lock); 1305 return count; 1306 } 1307 1308 1309 static ssize_t 1310 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf) 1311 { 1312 struct w83795_data *data = dev_get_drvdata(dev); 1313 int tmp; 1314 1315 if (data->enable_dts & 2) 1316 tmp = 5; 1317 else 1318 tmp = 6; 1319 1320 return sprintf(buf, "%d\n", tmp); 1321 } 1322 1323 static ssize_t 1324 show_dts(struct device *dev, struct device_attribute *attr, char *buf) 1325 { 1326 struct sensor_device_attribute_2 *sensor_attr = 1327 to_sensor_dev_attr_2(attr); 1328 int index = sensor_attr->index; 1329 struct w83795_data *data = w83795_update_device(dev); 1330 long temp = temp_from_reg(data->dts[index]); 1331 1332 temp += (data->dts_read_vrlsb[index] >> 6) * 250; 1333 return sprintf(buf, "%ld\n", temp); 1334 } 1335 1336 static ssize_t 1337 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf) 1338 { 1339 struct sensor_device_attribute_2 *sensor_attr = 1340 to_sensor_dev_attr_2(attr); 1341 int nr = sensor_attr->nr; 1342 struct w83795_data *data = dev_get_drvdata(dev); 1343 long temp = temp_from_reg(data->dts_ext[nr]); 1344 1345 return sprintf(buf, "%ld\n", temp); 1346 } 1347 1348 static ssize_t 1349 store_dts_ext(struct device *dev, struct device_attribute *attr, 1350 const char *buf, size_t count) 1351 { 1352 struct sensor_device_attribute_2 *sensor_attr = 1353 to_sensor_dev_attr_2(attr); 1354 int nr = sensor_attr->nr; 1355 struct i2c_client *client = to_i2c_client(dev); 1356 struct w83795_data *data = i2c_get_clientdata(client); 1357 long tmp; 1358 1359 if (strict_strtol(buf, 10, &tmp) < 0) 1360 return -EINVAL; 1361 1362 mutex_lock(&data->update_lock); 1363 data->dts_ext[nr] = temp_to_reg(tmp, -128, 127); 1364 w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]); 1365 mutex_unlock(&data->update_lock); 1366 return count; 1367 } 1368 1369 1370 static ssize_t 1371 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf) 1372 { 1373 struct w83795_data *data = dev_get_drvdata(dev); 1374 struct sensor_device_attribute_2 *sensor_attr = 1375 to_sensor_dev_attr_2(attr); 1376 int index = sensor_attr->index; 1377 int tmp; 1378 1379 if (data->temp_mode & (1 << index)) 1380 tmp = 3; /* Thermal diode */ 1381 else 1382 tmp = 4; /* Thermistor */ 1383 1384 return sprintf(buf, "%d\n", tmp); 1385 } 1386 1387 /* Only for temp1-4 (temp5-6 can only be thermistor) */ 1388 static ssize_t 1389 store_temp_mode(struct device *dev, struct device_attribute *attr, 1390 const char *buf, size_t count) 1391 { 1392 struct i2c_client *client = to_i2c_client(dev); 1393 struct w83795_data *data = i2c_get_clientdata(client); 1394 struct sensor_device_attribute_2 *sensor_attr = 1395 to_sensor_dev_attr_2(attr); 1396 int index = sensor_attr->index; 1397 int reg_shift; 1398 unsigned long val; 1399 u8 tmp; 1400 1401 if (strict_strtoul(buf, 10, &val) < 0) 1402 return -EINVAL; 1403 if ((val != 4) && (val != 3)) 1404 return -EINVAL; 1405 1406 mutex_lock(&data->update_lock); 1407 if (val == 3) { 1408 /* Thermal diode */ 1409 val = 0x01; 1410 data->temp_mode |= 1 << index; 1411 } else if (val == 4) { 1412 /* Thermistor */ 1413 val = 0x03; 1414 data->temp_mode &= ~(1 << index); 1415 } 1416 1417 reg_shift = 2 * index; 1418 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 1419 tmp &= ~(0x03 << reg_shift); 1420 tmp |= val << reg_shift; 1421 w83795_write(client, W83795_REG_TEMP_CTRL2, tmp); 1422 1423 mutex_unlock(&data->update_lock); 1424 return count; 1425 } 1426 1427 1428 /* show/store VIN */ 1429 static ssize_t 1430 show_in(struct device *dev, struct device_attribute *attr, char *buf) 1431 { 1432 struct sensor_device_attribute_2 *sensor_attr = 1433 to_sensor_dev_attr_2(attr); 1434 int nr = sensor_attr->nr; 1435 int index = sensor_attr->index; 1436 struct w83795_data *data = w83795_update_device(dev); 1437 u16 val = data->in[index][nr]; 1438 u8 lsb_idx; 1439 1440 switch (nr) { 1441 case IN_READ: 1442 /* calculate this value again by sensors as sensors3.conf */ 1443 if ((index >= 17) && 1444 !((data->has_gain >> (index - 17)) & 1)) 1445 val *= 8; 1446 break; 1447 case IN_MAX: 1448 case IN_LOW: 1449 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1450 val <<= 2; 1451 val |= (data->in_lsb[lsb_idx][nr] >> 1452 IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]) & 0x03; 1453 if ((index >= 17) && 1454 !((data->has_gain >> (index - 17)) & 1)) 1455 val *= 8; 1456 break; 1457 } 1458 val = in_from_reg(index, val); 1459 1460 return sprintf(buf, "%d\n", val); 1461 } 1462 1463 static ssize_t 1464 store_in(struct device *dev, struct device_attribute *attr, 1465 const char *buf, size_t count) 1466 { 1467 struct sensor_device_attribute_2 *sensor_attr = 1468 to_sensor_dev_attr_2(attr); 1469 int nr = sensor_attr->nr; 1470 int index = sensor_attr->index; 1471 struct i2c_client *client = to_i2c_client(dev); 1472 struct w83795_data *data = i2c_get_clientdata(client); 1473 unsigned long val; 1474 u8 tmp; 1475 u8 lsb_idx; 1476 1477 if (strict_strtoul(buf, 10, &val) < 0) 1478 return -EINVAL; 1479 val = in_to_reg(index, val); 1480 1481 if ((index >= 17) && 1482 !((data->has_gain >> (index - 17)) & 1)) 1483 val /= 8; 1484 val = SENSORS_LIMIT(val, 0, 0x3FF); 1485 mutex_lock(&data->update_lock); 1486 1487 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX]; 1488 tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr)); 1489 tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]); 1490 tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]; 1491 w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp); 1492 data->in_lsb[lsb_idx][nr] = tmp; 1493 1494 tmp = (val >> 2) & 0xff; 1495 w83795_write(client, W83795_REG_IN[index][nr], tmp); 1496 data->in[index][nr] = tmp; 1497 1498 mutex_unlock(&data->update_lock); 1499 return count; 1500 } 1501 1502 1503 #ifdef CONFIG_SENSORS_W83795_FANCTRL 1504 static ssize_t 1505 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf) 1506 { 1507 struct sensor_device_attribute_2 *sensor_attr = 1508 to_sensor_dev_attr_2(attr); 1509 int nr = sensor_attr->nr; 1510 struct w83795_data *data = w83795_update_pwm_config(dev); 1511 u16 val = data->setup_pwm[nr]; 1512 1513 switch (nr) { 1514 case SETUP_PWM_UPTIME: 1515 case SETUP_PWM_DOWNTIME: 1516 val = time_from_reg(val); 1517 break; 1518 } 1519 1520 return sprintf(buf, "%d\n", val); 1521 } 1522 1523 static ssize_t 1524 store_sf_setup(struct device *dev, struct device_attribute *attr, 1525 const char *buf, size_t count) 1526 { 1527 struct sensor_device_attribute_2 *sensor_attr = 1528 to_sensor_dev_attr_2(attr); 1529 int nr = sensor_attr->nr; 1530 struct i2c_client *client = to_i2c_client(dev); 1531 struct w83795_data *data = i2c_get_clientdata(client); 1532 unsigned long val; 1533 1534 if (strict_strtoul(buf, 10, &val) < 0) 1535 return -EINVAL; 1536 1537 switch (nr) { 1538 case SETUP_PWM_DEFAULT: 1539 val = SENSORS_LIMIT(val, 0, 0xff); 1540 break; 1541 case SETUP_PWM_UPTIME: 1542 case SETUP_PWM_DOWNTIME: 1543 val = time_to_reg(val); 1544 if (val == 0) 1545 return -EINVAL; 1546 break; 1547 } 1548 1549 mutex_lock(&data->update_lock); 1550 data->setup_pwm[nr] = val; 1551 w83795_write(client, W83795_REG_SETUP_PWM(nr), val); 1552 mutex_unlock(&data->update_lock); 1553 return count; 1554 } 1555 #endif 1556 1557 1558 #define NOT_USED -1 1559 1560 /* Don't change the attribute order, _max and _min are accessed by index 1561 * somewhere else in the code */ 1562 #define SENSOR_ATTR_IN(index) { \ 1563 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ 1564 IN_READ, index), \ 1565 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \ 1566 store_in, IN_MAX, index), \ 1567 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \ 1568 store_in, IN_LOW, index), \ 1569 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \ 1570 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \ 1571 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \ 1572 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1573 index + ((index > 14) ? 1 : 0)) } 1574 1575 #define SENSOR_ATTR_FAN(index) { \ 1576 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ 1577 NULL, FAN_INPUT, index - 1), \ 1578 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \ 1579 show_fan, store_fan_min, FAN_MIN, index - 1), \ 1580 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \ 1581 NULL, ALARM_STATUS, index + 31), \ 1582 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \ 1583 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) } 1584 1585 #define SENSOR_ATTR_PWM(index) { \ 1586 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \ 1587 store_pwm, PWM_OUTPUT, index - 1), \ 1588 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \ 1589 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \ 1590 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \ 1591 show_pwm, store_pwm, PWM_START, index - 1), \ 1592 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \ 1593 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \ 1594 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \ 1595 show_pwm, store_pwm, PWM_FREQ, index - 1), \ 1596 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \ 1597 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \ 1598 SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \ 1599 show_pwm_mode, NULL, NOT_USED, index - 1), \ 1600 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \ 1601 show_fanin, store_fanin, FANIN_TARGET, index - 1) } 1602 1603 #define SENSOR_ATTR_DTS(index) { \ 1604 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \ 1605 show_dts_mode, NULL, NOT_USED, index - 7), \ 1606 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \ 1607 NULL, NOT_USED, index - 7), \ 1608 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \ 1609 store_dts_ext, DTS_CRIT, NOT_USED), \ 1610 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \ 1611 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \ 1612 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \ 1613 store_dts_ext, DTS_WARN, NOT_USED), \ 1614 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1615 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \ 1616 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1617 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \ 1618 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1619 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) } 1620 1621 #define SENSOR_ATTR_TEMP(index) { \ 1622 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \ 1623 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ 1624 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \ 1625 NULL, TEMP_READ, index - 1), \ 1626 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \ 1627 store_temp, TEMP_CRIT, index - 1), \ 1628 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \ 1629 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \ 1630 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \ 1631 store_temp, TEMP_WARN, index - 1), \ 1632 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ 1633 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \ 1634 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ 1635 show_alarm_beep, NULL, ALARM_STATUS, \ 1636 index + (index > 4 ? 11 : 17)), \ 1637 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ 1638 show_alarm_beep, store_beep, BEEP_ENABLE, \ 1639 index + (index > 4 ? 11 : 17)), \ 1640 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \ 1641 show_temp_pwm_enable, store_temp_pwm_enable, \ 1642 TEMP_PWM_ENABLE, index - 1), \ 1643 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \ 1644 show_temp_pwm_enable, store_temp_pwm_enable, \ 1645 TEMP_PWM_FAN_MAP, index - 1), \ 1646 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \ 1647 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \ 1648 SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO, \ 1649 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \ 1650 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO, \ 1651 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \ 1652 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \ 1653 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \ 1654 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \ 1655 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \ 1656 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \ 1657 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \ 1658 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \ 1659 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \ 1660 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \ 1661 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \ 1662 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \ 1663 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \ 1664 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \ 1665 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \ 1666 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \ 1667 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \ 1668 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\ 1669 show_sf4_temp, store_sf4_temp, 0, index - 1), \ 1670 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\ 1671 show_sf4_temp, store_sf4_temp, 1, index - 1), \ 1672 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\ 1673 show_sf4_temp, store_sf4_temp, 2, index - 1), \ 1674 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\ 1675 show_sf4_temp, store_sf4_temp, 3, index - 1), \ 1676 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\ 1677 show_sf4_temp, store_sf4_temp, 4, index - 1), \ 1678 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\ 1679 show_sf4_temp, store_sf4_temp, 5, index - 1), \ 1680 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\ 1681 show_sf4_temp, store_sf4_temp, 6, index - 1) } 1682 1683 1684 static struct sensor_device_attribute_2 w83795_in[][5] = { 1685 SENSOR_ATTR_IN(0), 1686 SENSOR_ATTR_IN(1), 1687 SENSOR_ATTR_IN(2), 1688 SENSOR_ATTR_IN(3), 1689 SENSOR_ATTR_IN(4), 1690 SENSOR_ATTR_IN(5), 1691 SENSOR_ATTR_IN(6), 1692 SENSOR_ATTR_IN(7), 1693 SENSOR_ATTR_IN(8), 1694 SENSOR_ATTR_IN(9), 1695 SENSOR_ATTR_IN(10), 1696 SENSOR_ATTR_IN(11), 1697 SENSOR_ATTR_IN(12), 1698 SENSOR_ATTR_IN(13), 1699 SENSOR_ATTR_IN(14), 1700 SENSOR_ATTR_IN(15), 1701 SENSOR_ATTR_IN(16), 1702 SENSOR_ATTR_IN(17), 1703 SENSOR_ATTR_IN(18), 1704 SENSOR_ATTR_IN(19), 1705 SENSOR_ATTR_IN(20), 1706 }; 1707 1708 static const struct sensor_device_attribute_2 w83795_fan[][4] = { 1709 SENSOR_ATTR_FAN(1), 1710 SENSOR_ATTR_FAN(2), 1711 SENSOR_ATTR_FAN(3), 1712 SENSOR_ATTR_FAN(4), 1713 SENSOR_ATTR_FAN(5), 1714 SENSOR_ATTR_FAN(6), 1715 SENSOR_ATTR_FAN(7), 1716 SENSOR_ATTR_FAN(8), 1717 SENSOR_ATTR_FAN(9), 1718 SENSOR_ATTR_FAN(10), 1719 SENSOR_ATTR_FAN(11), 1720 SENSOR_ATTR_FAN(12), 1721 SENSOR_ATTR_FAN(13), 1722 SENSOR_ATTR_FAN(14), 1723 }; 1724 1725 static const struct sensor_device_attribute_2 w83795_temp[][28] = { 1726 SENSOR_ATTR_TEMP(1), 1727 SENSOR_ATTR_TEMP(2), 1728 SENSOR_ATTR_TEMP(3), 1729 SENSOR_ATTR_TEMP(4), 1730 SENSOR_ATTR_TEMP(5), 1731 SENSOR_ATTR_TEMP(6), 1732 }; 1733 1734 static const struct sensor_device_attribute_2 w83795_dts[][8] = { 1735 SENSOR_ATTR_DTS(7), 1736 SENSOR_ATTR_DTS(8), 1737 SENSOR_ATTR_DTS(9), 1738 SENSOR_ATTR_DTS(10), 1739 SENSOR_ATTR_DTS(11), 1740 SENSOR_ATTR_DTS(12), 1741 SENSOR_ATTR_DTS(13), 1742 SENSOR_ATTR_DTS(14), 1743 }; 1744 1745 static const struct sensor_device_attribute_2 w83795_pwm[][8] = { 1746 SENSOR_ATTR_PWM(1), 1747 SENSOR_ATTR_PWM(2), 1748 SENSOR_ATTR_PWM(3), 1749 SENSOR_ATTR_PWM(4), 1750 SENSOR_ATTR_PWM(5), 1751 SENSOR_ATTR_PWM(6), 1752 SENSOR_ATTR_PWM(7), 1753 SENSOR_ATTR_PWM(8), 1754 }; 1755 1756 static const struct sensor_device_attribute_2 w83795_tss[6] = { 1757 SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO, 1758 show_temp_src, store_temp_src, NOT_USED, 0), 1759 SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO, 1760 show_temp_src, store_temp_src, NOT_USED, 1), 1761 SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO, 1762 show_temp_src, store_temp_src, NOT_USED, 2), 1763 SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO, 1764 show_temp_src, store_temp_src, NOT_USED, 3), 1765 SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO, 1766 show_temp_src, store_temp_src, NOT_USED, 4), 1767 SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO, 1768 show_temp_src, store_temp_src, NOT_USED, 5), 1769 }; 1770 1771 static const struct sensor_device_attribute_2 sda_single_files[] = { 1772 SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep, 1773 store_chassis_clear, ALARM_STATUS, 46), 1774 SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep, 1775 store_beep, BEEP_ENABLE, 46), 1776 SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep, 1777 store_beep, BEEP_ENABLE, 47), 1778 #ifdef CONFIG_SENSORS_W83795_FANCTRL 1779 SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin, 1780 store_fanin, FANIN_TOL, NOT_USED), 1781 SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup, 1782 store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED), 1783 SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup, 1784 store_sf_setup, SETUP_PWM_UPTIME, NOT_USED), 1785 SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup, 1786 store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED), 1787 #endif 1788 }; 1789 1790 /* 1791 * Driver interface 1792 */ 1793 1794 static void w83795_init_client(struct i2c_client *client) 1795 { 1796 struct w83795_data *data = i2c_get_clientdata(client); 1797 static const u16 clkin[4] = { /* in kHz */ 1798 14318, 24000, 33333, 48000 1799 }; 1800 u8 config; 1801 1802 if (reset) 1803 w83795_write(client, W83795_REG_CONFIG, 0x80); 1804 1805 /* Start monitoring if needed */ 1806 config = w83795_read(client, W83795_REG_CONFIG); 1807 if (!(config & W83795_REG_CONFIG_START)) { 1808 dev_info(&client->dev, "Enabling monitoring operations\n"); 1809 w83795_write(client, W83795_REG_CONFIG, 1810 config | W83795_REG_CONFIG_START); 1811 } 1812 1813 data->clkin = clkin[(config >> 3) & 0x3]; 1814 dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin); 1815 } 1816 1817 static int w83795_get_device_id(struct i2c_client *client) 1818 { 1819 int device_id; 1820 1821 device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID); 1822 1823 /* Special case for rev. A chips; can't be checked first because later 1824 revisions emulate this for compatibility */ 1825 if (device_id < 0 || (device_id & 0xf0) != 0x50) { 1826 int alt_id; 1827 1828 alt_id = i2c_smbus_read_byte_data(client, 1829 W83795_REG_DEVICEID_A); 1830 if (alt_id == 0x50) 1831 device_id = alt_id; 1832 } 1833 1834 return device_id; 1835 } 1836 1837 /* Return 0 if detection is successful, -ENODEV otherwise */ 1838 static int w83795_detect(struct i2c_client *client, 1839 struct i2c_board_info *info) 1840 { 1841 int bank, vendor_id, device_id, expected, i2c_addr, config; 1842 struct i2c_adapter *adapter = client->adapter; 1843 unsigned short address = client->addr; 1844 const char *chip_name; 1845 1846 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1847 return -ENODEV; 1848 bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 1849 if (bank < 0 || (bank & 0x7c)) { 1850 dev_dbg(&adapter->dev, 1851 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1852 address, "bank"); 1853 return -ENODEV; 1854 } 1855 1856 /* Check Nuvoton vendor ID */ 1857 vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID); 1858 expected = bank & 0x80 ? 0x5c : 0xa3; 1859 if (vendor_id != expected) { 1860 dev_dbg(&adapter->dev, 1861 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1862 address, "vendor id"); 1863 return -ENODEV; 1864 } 1865 1866 /* Check device ID */ 1867 device_id = w83795_get_device_id(client) | 1868 (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8); 1869 if ((device_id >> 4) != 0x795) { 1870 dev_dbg(&adapter->dev, 1871 "w83795: Detection failed at addr 0x%02hx, check %s\n", 1872 address, "device id\n"); 1873 return -ENODEV; 1874 } 1875 1876 /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR 1877 should match */ 1878 if ((bank & 0x07) == 0) { 1879 i2c_addr = i2c_smbus_read_byte_data(client, 1880 W83795_REG_I2C_ADDR); 1881 if ((i2c_addr & 0x7f) != address) { 1882 dev_dbg(&adapter->dev, 1883 "w83795: Detection failed at addr 0x%02hx, " 1884 "check %s\n", address, "i2c addr"); 1885 return -ENODEV; 1886 } 1887 } 1888 1889 /* Check 795 chip type: 795G or 795ADG 1890 Usually we don't write to chips during detection, but here we don't 1891 quite have the choice; hopefully it's OK, we are about to return 1892 success anyway */ 1893 if ((bank & 0x07) != 0) 1894 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, 1895 bank & ~0x07); 1896 config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG); 1897 if (config & W83795_REG_CONFIG_CONFIG48) 1898 chip_name = "w83795adg"; 1899 else 1900 chip_name = "w83795g"; 1901 1902 strlcpy(info->type, chip_name, I2C_NAME_SIZE); 1903 dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name, 1904 'A' + (device_id & 0xf), address); 1905 1906 return 0; 1907 } 1908 1909 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *, 1910 const struct device_attribute *)) 1911 { 1912 struct w83795_data *data = dev_get_drvdata(dev); 1913 int err, i, j; 1914 1915 for (i = 0; i < ARRAY_SIZE(w83795_in); i++) { 1916 if (!(data->has_in & (1 << i))) 1917 continue; 1918 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) { 1919 err = fn(dev, &w83795_in[i][j].dev_attr); 1920 if (err) 1921 return err; 1922 } 1923 } 1924 1925 for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) { 1926 if (!(data->has_fan & (1 << i))) 1927 continue; 1928 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) { 1929 err = fn(dev, &w83795_fan[i][j].dev_attr); 1930 if (err) 1931 return err; 1932 } 1933 } 1934 1935 for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) { 1936 j = w83795_tss_useful(data, i); 1937 if (!j) 1938 continue; 1939 err = fn(dev, &w83795_tss[i].dev_attr); 1940 if (err) 1941 return err; 1942 } 1943 1944 for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) { 1945 err = fn(dev, &sda_single_files[i].dev_attr); 1946 if (err) 1947 return err; 1948 } 1949 1950 #ifdef CONFIG_SENSORS_W83795_FANCTRL 1951 for (i = 0; i < data->has_pwm; i++) { 1952 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) { 1953 err = fn(dev, &w83795_pwm[i][j].dev_attr); 1954 if (err) 1955 return err; 1956 } 1957 } 1958 #endif 1959 1960 for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) { 1961 if (!(data->has_temp & (1 << i))) 1962 continue; 1963 #ifdef CONFIG_SENSORS_W83795_FANCTRL 1964 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) { 1965 #else 1966 for (j = 0; j < 8; j++) { 1967 #endif 1968 err = fn(dev, &w83795_temp[i][j].dev_attr); 1969 if (err) 1970 return err; 1971 } 1972 } 1973 1974 if (data->enable_dts) { 1975 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) { 1976 if (!(data->has_dts & (1 << i))) 1977 continue; 1978 for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) { 1979 err = fn(dev, &w83795_dts[i][j].dev_attr); 1980 if (err) 1981 return err; 1982 } 1983 } 1984 } 1985 1986 return 0; 1987 } 1988 1989 /* We need a wrapper that fits in w83795_handle_files */ 1990 static int device_remove_file_wrapper(struct device *dev, 1991 const struct device_attribute *attr) 1992 { 1993 device_remove_file(dev, attr); 1994 return 0; 1995 } 1996 1997 static void w83795_check_dynamic_in_limits(struct i2c_client *client) 1998 { 1999 struct w83795_data *data = i2c_get_clientdata(client); 2000 u8 vid_ctl; 2001 int i, err_max, err_min; 2002 2003 vid_ctl = w83795_read(client, W83795_REG_VID_CTRL); 2004 2005 /* Return immediately if VRM isn't configured */ 2006 if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07) 2007 return; 2008 2009 data->has_dyn_in = (vid_ctl >> 3) & 0x07; 2010 for (i = 0; i < 2; i++) { 2011 if (!(data->has_dyn_in & (1 << i))) 2012 continue; 2013 2014 /* Voltage limits in dynamic mode, switch to read-only */ 2015 err_max = sysfs_chmod_file(&client->dev.kobj, 2016 &w83795_in[i][2].dev_attr.attr, 2017 S_IRUGO); 2018 err_min = sysfs_chmod_file(&client->dev.kobj, 2019 &w83795_in[i][3].dev_attr.attr, 2020 S_IRUGO); 2021 if (err_max || err_min) 2022 dev_warn(&client->dev, "Failed to set in%d limits " 2023 "read-only (%d, %d)\n", i, err_max, err_min); 2024 else 2025 dev_info(&client->dev, "in%d limits set dynamically " 2026 "from VID\n", i); 2027 } 2028 } 2029 2030 /* Check pins that can be used for either temperature or voltage monitoring */ 2031 static void w83795_apply_temp_config(struct w83795_data *data, u8 config, 2032 int temp_chan, int in_chan) 2033 { 2034 /* config is a 2-bit value */ 2035 switch (config) { 2036 case 0x2: /* Voltage monitoring */ 2037 data->has_in |= 1 << in_chan; 2038 break; 2039 case 0x1: /* Thermal diode */ 2040 if (temp_chan >= 4) 2041 break; 2042 data->temp_mode |= 1 << temp_chan; 2043 /* fall through */ 2044 case 0x3: /* Thermistor */ 2045 data->has_temp |= 1 << temp_chan; 2046 break; 2047 } 2048 } 2049 2050 static int w83795_probe(struct i2c_client *client, 2051 const struct i2c_device_id *id) 2052 { 2053 int i; 2054 u8 tmp; 2055 struct device *dev = &client->dev; 2056 struct w83795_data *data; 2057 int err; 2058 2059 data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL); 2060 if (!data) { 2061 err = -ENOMEM; 2062 goto exit; 2063 } 2064 2065 i2c_set_clientdata(client, data); 2066 data->chip_type = id->driver_data; 2067 data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL); 2068 mutex_init(&data->update_lock); 2069 2070 /* Initialize the chip */ 2071 w83795_init_client(client); 2072 2073 /* Check which voltages and fans are present */ 2074 data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1) 2075 | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8); 2076 data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1) 2077 | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8); 2078 2079 /* Check which analog temperatures and extra voltages are present */ 2080 tmp = w83795_read(client, W83795_REG_TEMP_CTRL1); 2081 if (tmp & 0x20) 2082 data->enable_dts = 1; 2083 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16); 2084 w83795_apply_temp_config(data, tmp & 0x3, 4, 15); 2085 tmp = w83795_read(client, W83795_REG_TEMP_CTRL2); 2086 w83795_apply_temp_config(data, tmp >> 6, 3, 20); 2087 w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19); 2088 w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18); 2089 w83795_apply_temp_config(data, tmp & 0x3, 0, 17); 2090 2091 /* Check DTS enable status */ 2092 if (data->enable_dts) { 2093 if (1 & w83795_read(client, W83795_REG_DTSC)) 2094 data->enable_dts |= 2; 2095 data->has_dts = w83795_read(client, W83795_REG_DTSE); 2096 } 2097 2098 /* Report PECI Tbase values */ 2099 if (data->enable_dts == 1) { 2100 for (i = 0; i < 8; i++) { 2101 if (!(data->has_dts & (1 << i))) 2102 continue; 2103 tmp = w83795_read(client, W83795_REG_PECI_TBASE(i)); 2104 dev_info(&client->dev, 2105 "PECI agent %d Tbase temperature: %u\n", 2106 i + 1, (unsigned int)tmp & 0x7f); 2107 } 2108 } 2109 2110 data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f; 2111 2112 /* pwm and smart fan */ 2113 if (data->chip_type == w83795g) 2114 data->has_pwm = 8; 2115 else 2116 data->has_pwm = 2; 2117 2118 err = w83795_handle_files(dev, device_create_file); 2119 if (err) 2120 goto exit_remove; 2121 2122 if (data->chip_type == w83795g) 2123 w83795_check_dynamic_in_limits(client); 2124 2125 data->hwmon_dev = hwmon_device_register(dev); 2126 if (IS_ERR(data->hwmon_dev)) { 2127 err = PTR_ERR(data->hwmon_dev); 2128 goto exit_remove; 2129 } 2130 2131 return 0; 2132 2133 exit_remove: 2134 w83795_handle_files(dev, device_remove_file_wrapper); 2135 kfree(data); 2136 exit: 2137 return err; 2138 } 2139 2140 static int w83795_remove(struct i2c_client *client) 2141 { 2142 struct w83795_data *data = i2c_get_clientdata(client); 2143 2144 hwmon_device_unregister(data->hwmon_dev); 2145 w83795_handle_files(&client->dev, device_remove_file_wrapper); 2146 kfree(data); 2147 2148 return 0; 2149 } 2150 2151 2152 static const struct i2c_device_id w83795_id[] = { 2153 { "w83795g", w83795g }, 2154 { "w83795adg", w83795adg }, 2155 { } 2156 }; 2157 MODULE_DEVICE_TABLE(i2c, w83795_id); 2158 2159 static struct i2c_driver w83795_driver = { 2160 .driver = { 2161 .name = "w83795", 2162 }, 2163 .probe = w83795_probe, 2164 .remove = w83795_remove, 2165 .id_table = w83795_id, 2166 2167 .class = I2C_CLASS_HWMON, 2168 .detect = w83795_detect, 2169 .address_list = normal_i2c, 2170 }; 2171 2172 static int __init sensors_w83795_init(void) 2173 { 2174 return i2c_add_driver(&w83795_driver); 2175 } 2176 2177 static void __exit sensors_w83795_exit(void) 2178 { 2179 i2c_del_driver(&w83795_driver); 2180 } 2181 2182 MODULE_AUTHOR("Wei Song, Jean Delvare <khali@linux-fr.org>"); 2183 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver"); 2184 MODULE_LICENSE("GPL"); 2185 2186 module_init(sensors_w83795_init); 2187 module_exit(sensors_w83795_exit); 2188