1 /* 2 * f75375s.c - driver for the Fintek F75375/SP, F75373 and 3 * F75387SG/RG hardware monitoring features 4 * Copyright (C) 2006-2007 Riku Voipio 5 * 6 * Datasheets available at: 7 * 8 * f75375: 9 * http://www.fintek.com.tw/files/productfiles/F75375_V026P.pdf 10 * 11 * f75373: 12 * http://www.fintek.com.tw/files/productfiles/F75373_V025P.pdf 13 * 14 * f75387: 15 * http://www.fintek.com.tw/files/productfiles/F75387_V027P.pdf 16 * 17 * This program is free software; you can redistribute it and/or modify 18 * it under the terms of the GNU General Public License as published by 19 * the Free Software Foundation; either version 2 of the License, or 20 * (at your option) any later version. 21 * 22 * This program is distributed in the hope that it will be useful, 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 * GNU General Public License for more details. 26 * 27 * You should have received a copy of the GNU General Public License 28 * along with this program; if not, write to the Free Software 29 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 30 * 31 */ 32 33 #include <linux/module.h> 34 #include <linux/jiffies.h> 35 #include <linux/hwmon.h> 36 #include <linux/hwmon-sysfs.h> 37 #include <linux/i2c.h> 38 #include <linux/err.h> 39 #include <linux/mutex.h> 40 #include <linux/f75375s.h> 41 #include <linux/slab.h> 42 43 /* Addresses to scan */ 44 static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END }; 45 46 enum chips { f75373, f75375, f75387 }; 47 48 /* Fintek F75375 registers */ 49 #define F75375_REG_CONFIG0 0x0 50 #define F75375_REG_CONFIG1 0x1 51 #define F75375_REG_CONFIG2 0x2 52 #define F75375_REG_CONFIG3 0x3 53 #define F75375_REG_ADDR 0x4 54 #define F75375_REG_INTR 0x31 55 #define F75375_CHIP_ID 0x5A 56 #define F75375_REG_VERSION 0x5C 57 #define F75375_REG_VENDOR 0x5D 58 #define F75375_REG_FAN_TIMER 0x60 59 60 #define F75375_REG_VOLT(nr) (0x10 + (nr)) 61 #define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2) 62 #define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2) 63 64 #define F75375_REG_TEMP(nr) (0x14 + (nr)) 65 #define F75387_REG_TEMP11_LSB(nr) (0x1a + (nr)) 66 #define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2) 67 #define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2) 68 69 #define F75375_REG_FAN(nr) (0x16 + (nr) * 2) 70 #define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2) 71 #define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10) 72 #define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10) 73 #define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10) 74 75 #define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10) 76 #define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step)) 77 #define F75375_REG_FAN_B_SPEED(nr, step) \ 78 ((0xA5 + (nr) * 0x10) + (step) * 2) 79 80 #define F75375_REG_PWM1_RAISE_DUTY 0x69 81 #define F75375_REG_PWM2_RAISE_DUTY 0x6A 82 #define F75375_REG_PWM1_DROP_DUTY 0x6B 83 #define F75375_REG_PWM2_DROP_DUTY 0x6C 84 85 #define F75375_FAN_CTRL_LINEAR(nr) (4 + nr) 86 #define F75387_FAN_CTRL_LINEAR(nr) (1 + ((nr) * 4)) 87 #define FAN_CTRL_MODE(nr) (4 + ((nr) * 2)) 88 #define F75387_FAN_DUTY_MODE(nr) (2 + ((nr) * 4)) 89 #define F75387_FAN_MANU_MODE(nr) ((nr) * 4) 90 91 /* 92 * Data structures and manipulation thereof 93 */ 94 95 struct f75375_data { 96 unsigned short addr; 97 struct device *hwmon_dev; 98 99 const char *name; 100 int kind; 101 struct mutex update_lock; /* protect register access */ 102 char valid; 103 unsigned long last_updated; /* In jiffies */ 104 unsigned long last_limits; /* In jiffies */ 105 106 /* Register values */ 107 u8 in[4]; 108 u8 in_max[4]; 109 u8 in_min[4]; 110 u16 fan[2]; 111 u16 fan_min[2]; 112 u16 fan_max[2]; 113 u16 fan_target[2]; 114 u8 fan_timer; 115 u8 pwm[2]; 116 u8 pwm_mode[2]; 117 u8 pwm_enable[2]; 118 /* 119 * f75387: For remote temperature reading, it uses signed 11-bit 120 * values with LSB = 0.125 degree Celsius, left-justified in 16-bit 121 * registers. For original 8-bit temp readings, the LSB just is 0. 122 */ 123 s16 temp11[2]; 124 s8 temp_high[2]; 125 s8 temp_max_hyst[2]; 126 }; 127 128 static int f75375_detect(struct i2c_client *client, 129 struct i2c_board_info *info); 130 static int f75375_probe(struct i2c_client *client, 131 const struct i2c_device_id *id); 132 static int f75375_remove(struct i2c_client *client); 133 134 static const struct i2c_device_id f75375_id[] = { 135 { "f75373", f75373 }, 136 { "f75375", f75375 }, 137 { "f75387", f75387 }, 138 { } 139 }; 140 MODULE_DEVICE_TABLE(i2c, f75375_id); 141 142 static struct i2c_driver f75375_driver = { 143 .class = I2C_CLASS_HWMON, 144 .driver = { 145 .name = "f75375", 146 }, 147 .probe = f75375_probe, 148 .remove = f75375_remove, 149 .id_table = f75375_id, 150 .detect = f75375_detect, 151 .address_list = normal_i2c, 152 }; 153 154 static inline int f75375_read8(struct i2c_client *client, u8 reg) 155 { 156 return i2c_smbus_read_byte_data(client, reg); 157 } 158 159 /* in most cases, should be called while holding update_lock */ 160 static inline u16 f75375_read16(struct i2c_client *client, u8 reg) 161 { 162 return (i2c_smbus_read_byte_data(client, reg) << 8) 163 | i2c_smbus_read_byte_data(client, reg + 1); 164 } 165 166 static inline void f75375_write8(struct i2c_client *client, u8 reg, 167 u8 value) 168 { 169 i2c_smbus_write_byte_data(client, reg, value); 170 } 171 172 static inline void f75375_write16(struct i2c_client *client, u8 reg, 173 u16 value) 174 { 175 int err = i2c_smbus_write_byte_data(client, reg, (value >> 8)); 176 if (err) 177 return; 178 i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF)); 179 } 180 181 static struct f75375_data *f75375_update_device(struct device *dev) 182 { 183 struct i2c_client *client = to_i2c_client(dev); 184 struct f75375_data *data = i2c_get_clientdata(client); 185 int nr; 186 187 mutex_lock(&data->update_lock); 188 189 /* Limit registers cache is refreshed after 60 seconds */ 190 if (time_after(jiffies, data->last_limits + 60 * HZ) 191 || !data->valid) { 192 for (nr = 0; nr < 2; nr++) { 193 data->temp_high[nr] = 194 f75375_read8(client, F75375_REG_TEMP_HIGH(nr)); 195 data->temp_max_hyst[nr] = 196 f75375_read8(client, F75375_REG_TEMP_HYST(nr)); 197 data->fan_max[nr] = 198 f75375_read16(client, F75375_REG_FAN_FULL(nr)); 199 data->fan_min[nr] = 200 f75375_read16(client, F75375_REG_FAN_MIN(nr)); 201 data->fan_target[nr] = 202 f75375_read16(client, F75375_REG_FAN_EXP(nr)); 203 } 204 for (nr = 0; nr < 4; nr++) { 205 data->in_max[nr] = 206 f75375_read8(client, F75375_REG_VOLT_HIGH(nr)); 207 data->in_min[nr] = 208 f75375_read8(client, F75375_REG_VOLT_LOW(nr)); 209 } 210 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER); 211 data->last_limits = jiffies; 212 } 213 214 /* Measurement registers cache is refreshed after 2 second */ 215 if (time_after(jiffies, data->last_updated + 2 * HZ) 216 || !data->valid) { 217 for (nr = 0; nr < 2; nr++) { 218 data->pwm[nr] = f75375_read8(client, 219 F75375_REG_FAN_PWM_DUTY(nr)); 220 /* assign MSB, therefore shift it by 8 bits */ 221 data->temp11[nr] = 222 f75375_read8(client, F75375_REG_TEMP(nr)) << 8; 223 if (data->kind == f75387) 224 /* merge F75387's temperature LSB (11-bit) */ 225 data->temp11[nr] |= 226 f75375_read8(client, 227 F75387_REG_TEMP11_LSB(nr)); 228 data->fan[nr] = 229 f75375_read16(client, F75375_REG_FAN(nr)); 230 } 231 for (nr = 0; nr < 4; nr++) 232 data->in[nr] = 233 f75375_read8(client, F75375_REG_VOLT(nr)); 234 235 data->last_updated = jiffies; 236 data->valid = 1; 237 } 238 239 mutex_unlock(&data->update_lock); 240 return data; 241 } 242 243 static inline u16 rpm_from_reg(u16 reg) 244 { 245 if (reg == 0 || reg == 0xffff) 246 return 0; 247 return 1500000 / reg; 248 } 249 250 static inline u16 rpm_to_reg(int rpm) 251 { 252 if (rpm < 367 || rpm > 0xffff) 253 return 0xffff; 254 return 1500000 / rpm; 255 } 256 257 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 258 const char *buf, size_t count) 259 { 260 int nr = to_sensor_dev_attr(attr)->index; 261 struct i2c_client *client = to_i2c_client(dev); 262 struct f75375_data *data = i2c_get_clientdata(client); 263 unsigned long val; 264 int err; 265 266 err = kstrtoul(buf, 10, &val); 267 if (err < 0) 268 return err; 269 270 mutex_lock(&data->update_lock); 271 data->fan_min[nr] = rpm_to_reg(val); 272 f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]); 273 mutex_unlock(&data->update_lock); 274 return count; 275 } 276 277 static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr, 278 const char *buf, size_t count) 279 { 280 int nr = to_sensor_dev_attr(attr)->index; 281 struct i2c_client *client = to_i2c_client(dev); 282 struct f75375_data *data = i2c_get_clientdata(client); 283 unsigned long val; 284 int err; 285 286 err = kstrtoul(buf, 10, &val); 287 if (err < 0) 288 return err; 289 290 mutex_lock(&data->update_lock); 291 data->fan_target[nr] = rpm_to_reg(val); 292 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]); 293 mutex_unlock(&data->update_lock); 294 return count; 295 } 296 297 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 298 const char *buf, size_t count) 299 { 300 int nr = to_sensor_dev_attr(attr)->index; 301 struct i2c_client *client = to_i2c_client(dev); 302 struct f75375_data *data = i2c_get_clientdata(client); 303 unsigned long val; 304 int err; 305 306 err = kstrtoul(buf, 10, &val); 307 if (err < 0) 308 return err; 309 310 mutex_lock(&data->update_lock); 311 data->pwm[nr] = SENSORS_LIMIT(val, 0, 255); 312 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), data->pwm[nr]); 313 mutex_unlock(&data->update_lock); 314 return count; 315 } 316 317 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute 318 *attr, char *buf) 319 { 320 int nr = to_sensor_dev_attr(attr)->index; 321 struct f75375_data *data = f75375_update_device(dev); 322 return sprintf(buf, "%d\n", data->pwm_enable[nr]); 323 } 324 325 static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val) 326 { 327 struct f75375_data *data = i2c_get_clientdata(client); 328 u8 fanmode; 329 330 if (val < 0 || val > 3) 331 return -EINVAL; 332 333 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER); 334 if (data->kind == f75387) { 335 /* clear each fanX_mode bit before setting them properly */ 336 fanmode &= ~(1 << F75387_FAN_DUTY_MODE(nr)); 337 fanmode &= ~(1 << F75387_FAN_MANU_MODE(nr)); 338 switch (val) { 339 case 0: /* full speed */ 340 fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); 341 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr)); 342 data->pwm[nr] = 255; 343 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), 344 data->pwm[nr]); 345 break; 346 case 1: /* PWM */ 347 fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); 348 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr)); 349 break; 350 case 2: /* AUTOMATIC*/ 351 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr)); 352 break; 353 case 3: /* fan speed */ 354 fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); 355 break; 356 } 357 } else { 358 /* clear each fanX_mode bit before setting them properly */ 359 fanmode &= ~(3 << FAN_CTRL_MODE(nr)); 360 switch (val) { 361 case 0: /* full speed */ 362 fanmode |= (3 << FAN_CTRL_MODE(nr)); 363 data->pwm[nr] = 255; 364 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), 365 data->pwm[nr]); 366 break; 367 case 1: /* PWM */ 368 fanmode |= (3 << FAN_CTRL_MODE(nr)); 369 break; 370 case 2: /* AUTOMATIC*/ 371 fanmode |= (1 << FAN_CTRL_MODE(nr)); 372 break; 373 case 3: /* fan speed */ 374 break; 375 } 376 } 377 378 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode); 379 data->pwm_enable[nr] = val; 380 return 0; 381 } 382 383 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, 384 const char *buf, size_t count) 385 { 386 int nr = to_sensor_dev_attr(attr)->index; 387 struct i2c_client *client = to_i2c_client(dev); 388 struct f75375_data *data = i2c_get_clientdata(client); 389 unsigned long val; 390 int err; 391 392 err = kstrtoul(buf, 10, &val); 393 if (err < 0) 394 return err; 395 396 mutex_lock(&data->update_lock); 397 err = set_pwm_enable_direct(client, nr, val); 398 mutex_unlock(&data->update_lock); 399 return err ? err : count; 400 } 401 402 static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr, 403 const char *buf, size_t count) 404 { 405 int nr = to_sensor_dev_attr(attr)->index; 406 struct i2c_client *client = to_i2c_client(dev); 407 struct f75375_data *data = i2c_get_clientdata(client); 408 unsigned long val; 409 int err; 410 u8 conf; 411 char reg, ctrl; 412 413 err = kstrtoul(buf, 10, &val); 414 if (err < 0) 415 return err; 416 417 if (!(val == 0 || val == 1)) 418 return -EINVAL; 419 420 /* F75373 does not support DC (linear voltage) fan control mode */ 421 if (data->kind == f75373 && val == 0) 422 return -EINVAL; 423 424 /* take care for different registers */ 425 if (data->kind == f75387) { 426 reg = F75375_REG_FAN_TIMER; 427 ctrl = F75387_FAN_CTRL_LINEAR(nr); 428 } else { 429 reg = F75375_REG_CONFIG1; 430 ctrl = F75375_FAN_CTRL_LINEAR(nr); 431 } 432 433 mutex_lock(&data->update_lock); 434 conf = f75375_read8(client, reg); 435 conf &= ~(1 << ctrl); 436 437 if (val == 0) 438 conf |= (1 << ctrl); 439 440 f75375_write8(client, reg, conf); 441 data->pwm_mode[nr] = val; 442 mutex_unlock(&data->update_lock); 443 return count; 444 } 445 446 static ssize_t show_pwm(struct device *dev, struct device_attribute 447 *attr, char *buf) 448 { 449 int nr = to_sensor_dev_attr(attr)->index; 450 struct f75375_data *data = f75375_update_device(dev); 451 return sprintf(buf, "%d\n", data->pwm[nr]); 452 } 453 454 static ssize_t show_pwm_mode(struct device *dev, struct device_attribute 455 *attr, char *buf) 456 { 457 int nr = to_sensor_dev_attr(attr)->index; 458 struct f75375_data *data = f75375_update_device(dev); 459 return sprintf(buf, "%d\n", data->pwm_mode[nr]); 460 } 461 462 #define VOLT_FROM_REG(val) ((val) * 8) 463 #define VOLT_TO_REG(val) ((val) / 8) 464 465 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 466 char *buf) 467 { 468 int nr = to_sensor_dev_attr(attr)->index; 469 struct f75375_data *data = f75375_update_device(dev); 470 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr])); 471 } 472 473 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 474 char *buf) 475 { 476 int nr = to_sensor_dev_attr(attr)->index; 477 struct f75375_data *data = f75375_update_device(dev); 478 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr])); 479 } 480 481 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 482 char *buf) 483 { 484 int nr = to_sensor_dev_attr(attr)->index; 485 struct f75375_data *data = f75375_update_device(dev); 486 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr])); 487 } 488 489 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 490 const char *buf, size_t count) 491 { 492 int nr = to_sensor_dev_attr(attr)->index; 493 struct i2c_client *client = to_i2c_client(dev); 494 struct f75375_data *data = i2c_get_clientdata(client); 495 unsigned long val; 496 int err; 497 498 err = kstrtoul(buf, 10, &val); 499 if (err < 0) 500 return err; 501 502 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); 503 mutex_lock(&data->update_lock); 504 data->in_max[nr] = val; 505 f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]); 506 mutex_unlock(&data->update_lock); 507 return count; 508 } 509 510 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 511 const char *buf, size_t count) 512 { 513 int nr = to_sensor_dev_attr(attr)->index; 514 struct i2c_client *client = to_i2c_client(dev); 515 struct f75375_data *data = i2c_get_clientdata(client); 516 unsigned long val; 517 int err; 518 519 err = kstrtoul(buf, 10, &val); 520 if (err < 0) 521 return err; 522 523 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); 524 mutex_lock(&data->update_lock); 525 data->in_min[nr] = val; 526 f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]); 527 mutex_unlock(&data->update_lock); 528 return count; 529 } 530 #define TEMP_FROM_REG(val) ((val) * 1000) 531 #define TEMP_TO_REG(val) ((val) / 1000) 532 #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) 533 534 static ssize_t show_temp11(struct device *dev, struct device_attribute *attr, 535 char *buf) 536 { 537 int nr = to_sensor_dev_attr(attr)->index; 538 struct f75375_data *data = f75375_update_device(dev); 539 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr])); 540 } 541 542 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 543 char *buf) 544 { 545 int nr = to_sensor_dev_attr(attr)->index; 546 struct f75375_data *data = f75375_update_device(dev); 547 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); 548 } 549 550 static ssize_t show_temp_max_hyst(struct device *dev, 551 struct device_attribute *attr, char *buf) 552 { 553 int nr = to_sensor_dev_attr(attr)->index; 554 struct f75375_data *data = f75375_update_device(dev); 555 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr])); 556 } 557 558 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 559 const char *buf, size_t count) 560 { 561 int nr = to_sensor_dev_attr(attr)->index; 562 struct i2c_client *client = to_i2c_client(dev); 563 struct f75375_data *data = i2c_get_clientdata(client); 564 unsigned long val; 565 int err; 566 567 err = kstrtoul(buf, 10, &val); 568 if (err < 0) 569 return err; 570 571 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); 572 mutex_lock(&data->update_lock); 573 data->temp_high[nr] = val; 574 f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]); 575 mutex_unlock(&data->update_lock); 576 return count; 577 } 578 579 static ssize_t set_temp_max_hyst(struct device *dev, 580 struct device_attribute *attr, const char *buf, size_t count) 581 { 582 int nr = to_sensor_dev_attr(attr)->index; 583 struct i2c_client *client = to_i2c_client(dev); 584 struct f75375_data *data = i2c_get_clientdata(client); 585 unsigned long val; 586 int err; 587 588 err = kstrtoul(buf, 10, &val); 589 if (err < 0) 590 return err; 591 592 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); 593 mutex_lock(&data->update_lock); 594 data->temp_max_hyst[nr] = val; 595 f75375_write8(client, F75375_REG_TEMP_HYST(nr), 596 data->temp_max_hyst[nr]); 597 mutex_unlock(&data->update_lock); 598 return count; 599 } 600 601 #define show_fan(thing) \ 602 static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \ 603 char *buf)\ 604 {\ 605 int nr = to_sensor_dev_attr(attr)->index;\ 606 struct f75375_data *data = f75375_update_device(dev); \ 607 return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \ 608 } 609 610 show_fan(fan); 611 show_fan(fan_min); 612 show_fan(fan_max); 613 show_fan(fan_target); 614 615 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); 616 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR, 617 show_in_max, set_in_max, 0); 618 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR, 619 show_in_min, set_in_min, 0); 620 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); 621 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR, 622 show_in_max, set_in_max, 1); 623 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR, 624 show_in_min, set_in_min, 1); 625 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); 626 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR, 627 show_in_max, set_in_max, 2); 628 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR, 629 show_in_min, set_in_min, 2); 630 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); 631 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR, 632 show_in_max, set_in_max, 3); 633 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR, 634 show_in_min, set_in_min, 3); 635 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0); 636 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, 637 show_temp_max_hyst, set_temp_max_hyst, 0); 638 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR, 639 show_temp_max, set_temp_max, 0); 640 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1); 641 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, 642 show_temp_max_hyst, set_temp_max_hyst, 1); 643 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR, 644 show_temp_max, set_temp_max, 1); 645 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); 646 static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0); 647 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR, 648 show_fan_min, set_fan_min, 0); 649 static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR, 650 show_fan_target, set_fan_target, 0); 651 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); 652 static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1); 653 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR, 654 show_fan_min, set_fan_min, 1); 655 static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR, 656 show_fan_target, set_fan_target, 1); 657 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR, 658 show_pwm, set_pwm, 0); 659 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR, 660 show_pwm_enable, set_pwm_enable, 0); 661 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, 662 show_pwm_mode, set_pwm_mode, 0); 663 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, 664 show_pwm, set_pwm, 1); 665 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR, 666 show_pwm_enable, set_pwm_enable, 1); 667 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO, 668 show_pwm_mode, set_pwm_mode, 1); 669 670 static struct attribute *f75375_attributes[] = { 671 &sensor_dev_attr_temp1_input.dev_attr.attr, 672 &sensor_dev_attr_temp1_max.dev_attr.attr, 673 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, 674 &sensor_dev_attr_temp2_input.dev_attr.attr, 675 &sensor_dev_attr_temp2_max.dev_attr.attr, 676 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, 677 &sensor_dev_attr_fan1_input.dev_attr.attr, 678 &sensor_dev_attr_fan1_max.dev_attr.attr, 679 &sensor_dev_attr_fan1_min.dev_attr.attr, 680 &sensor_dev_attr_fan1_target.dev_attr.attr, 681 &sensor_dev_attr_fan2_input.dev_attr.attr, 682 &sensor_dev_attr_fan2_max.dev_attr.attr, 683 &sensor_dev_attr_fan2_min.dev_attr.attr, 684 &sensor_dev_attr_fan2_target.dev_attr.attr, 685 &sensor_dev_attr_pwm1.dev_attr.attr, 686 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 687 &sensor_dev_attr_pwm1_mode.dev_attr.attr, 688 &sensor_dev_attr_pwm2.dev_attr.attr, 689 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 690 &sensor_dev_attr_pwm2_mode.dev_attr.attr, 691 &sensor_dev_attr_in0_input.dev_attr.attr, 692 &sensor_dev_attr_in0_max.dev_attr.attr, 693 &sensor_dev_attr_in0_min.dev_attr.attr, 694 &sensor_dev_attr_in1_input.dev_attr.attr, 695 &sensor_dev_attr_in1_max.dev_attr.attr, 696 &sensor_dev_attr_in1_min.dev_attr.attr, 697 &sensor_dev_attr_in2_input.dev_attr.attr, 698 &sensor_dev_attr_in2_max.dev_attr.attr, 699 &sensor_dev_attr_in2_min.dev_attr.attr, 700 &sensor_dev_attr_in3_input.dev_attr.attr, 701 &sensor_dev_attr_in3_max.dev_attr.attr, 702 &sensor_dev_attr_in3_min.dev_attr.attr, 703 NULL 704 }; 705 706 static const struct attribute_group f75375_group = { 707 .attrs = f75375_attributes, 708 }; 709 710 static void f75375_init(struct i2c_client *client, struct f75375_data *data, 711 struct f75375s_platform_data *f75375s_pdata) 712 { 713 int nr; 714 715 if (!f75375s_pdata) { 716 u8 conf, mode; 717 int nr; 718 719 conf = f75375_read8(client, F75375_REG_CONFIG1); 720 mode = f75375_read8(client, F75375_REG_FAN_TIMER); 721 for (nr = 0; nr < 2; nr++) { 722 if (data->kind == f75387) { 723 bool manu, duty; 724 725 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr)))) 726 data->pwm_mode[nr] = 1; 727 728 manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1); 729 duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1); 730 if (manu && duty) 731 /* speed */ 732 data->pwm_enable[nr] = 3; 733 else if (!manu && duty) 734 /* automatic */ 735 data->pwm_enable[nr] = 2; 736 else 737 /* manual */ 738 data->pwm_enable[nr] = 1; 739 } else { 740 if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr)))) 741 data->pwm_mode[nr] = 1; 742 743 switch ((mode >> FAN_CTRL_MODE(nr)) & 3) { 744 case 0: /* speed */ 745 data->pwm_enable[nr] = 3; 746 break; 747 case 1: /* automatic */ 748 data->pwm_enable[nr] = 2; 749 break; 750 default: /* manual */ 751 data->pwm_enable[nr] = 1; 752 break; 753 } 754 } 755 } 756 return; 757 } 758 759 set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]); 760 set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]); 761 for (nr = 0; nr < 2; nr++) { 762 data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255); 763 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), 764 data->pwm[nr]); 765 } 766 767 } 768 769 static int f75375_probe(struct i2c_client *client, 770 const struct i2c_device_id *id) 771 { 772 struct f75375_data *data; 773 struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data; 774 int err; 775 776 if (!i2c_check_functionality(client->adapter, 777 I2C_FUNC_SMBUS_BYTE_DATA)) 778 return -EIO; 779 data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL); 780 if (!data) 781 return -ENOMEM; 782 783 i2c_set_clientdata(client, data); 784 mutex_init(&data->update_lock); 785 data->kind = id->driver_data; 786 787 err = sysfs_create_group(&client->dev.kobj, &f75375_group); 788 if (err) 789 goto exit_free; 790 791 if (data->kind == f75375) { 792 err = sysfs_chmod_file(&client->dev.kobj, 793 &sensor_dev_attr_pwm1_mode.dev_attr.attr, 794 S_IRUGO | S_IWUSR); 795 if (err) 796 goto exit_remove; 797 err = sysfs_chmod_file(&client->dev.kobj, 798 &sensor_dev_attr_pwm2_mode.dev_attr.attr, 799 S_IRUGO | S_IWUSR); 800 if (err) 801 goto exit_remove; 802 } 803 804 data->hwmon_dev = hwmon_device_register(&client->dev); 805 if (IS_ERR(data->hwmon_dev)) { 806 err = PTR_ERR(data->hwmon_dev); 807 goto exit_remove; 808 } 809 810 f75375_init(client, data, f75375s_pdata); 811 812 return 0; 813 814 exit_remove: 815 sysfs_remove_group(&client->dev.kobj, &f75375_group); 816 exit_free: 817 kfree(data); 818 return err; 819 } 820 821 static int f75375_remove(struct i2c_client *client) 822 { 823 struct f75375_data *data = i2c_get_clientdata(client); 824 hwmon_device_unregister(data->hwmon_dev); 825 sysfs_remove_group(&client->dev.kobj, &f75375_group); 826 kfree(data); 827 return 0; 828 } 829 830 /* Return 0 if detection is successful, -ENODEV otherwise */ 831 static int f75375_detect(struct i2c_client *client, 832 struct i2c_board_info *info) 833 { 834 struct i2c_adapter *adapter = client->adapter; 835 u16 vendid, chipid; 836 u8 version; 837 const char *name; 838 839 vendid = f75375_read16(client, F75375_REG_VENDOR); 840 chipid = f75375_read16(client, F75375_CHIP_ID); 841 if (vendid != 0x1934) 842 return -ENODEV; 843 844 if (chipid == 0x0306) 845 name = "f75375"; 846 else if (chipid == 0x0204) 847 name = "f75373"; 848 else if (chipid == 0x0410) 849 name = "f75387"; 850 else 851 return -ENODEV; 852 853 version = f75375_read8(client, F75375_REG_VERSION); 854 dev_info(&adapter->dev, "found %s version: %02X\n", name, version); 855 strlcpy(info->type, name, I2C_NAME_SIZE); 856 857 return 0; 858 } 859 860 static int __init sensors_f75375_init(void) 861 { 862 return i2c_add_driver(&f75375_driver); 863 } 864 865 static void __exit sensors_f75375_exit(void) 866 { 867 i2c_del_driver(&f75375_driver); 868 } 869 870 MODULE_AUTHOR("Riku Voipio"); 871 MODULE_LICENSE("GPL"); 872 MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver"); 873 874 module_init(sensors_f75375_init); 875 module_exit(sensors_f75375_exit); 876