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 void f75375_write_pwm(struct i2c_client *client, int nr) 182 { 183 struct f75375_data *data = i2c_get_clientdata(client); 184 if (data->kind == f75387) 185 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->pwm[nr]); 186 else 187 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), 188 data->pwm[nr]); 189 } 190 191 static struct f75375_data *f75375_update_device(struct device *dev) 192 { 193 struct i2c_client *client = to_i2c_client(dev); 194 struct f75375_data *data = i2c_get_clientdata(client); 195 int nr; 196 197 mutex_lock(&data->update_lock); 198 199 /* Limit registers cache is refreshed after 60 seconds */ 200 if (time_after(jiffies, data->last_limits + 60 * HZ) 201 || !data->valid) { 202 for (nr = 0; nr < 2; nr++) { 203 data->temp_high[nr] = 204 f75375_read8(client, F75375_REG_TEMP_HIGH(nr)); 205 data->temp_max_hyst[nr] = 206 f75375_read8(client, F75375_REG_TEMP_HYST(nr)); 207 data->fan_max[nr] = 208 f75375_read16(client, F75375_REG_FAN_FULL(nr)); 209 data->fan_min[nr] = 210 f75375_read16(client, F75375_REG_FAN_MIN(nr)); 211 data->fan_target[nr] = 212 f75375_read16(client, F75375_REG_FAN_EXP(nr)); 213 } 214 for (nr = 0; nr < 4; nr++) { 215 data->in_max[nr] = 216 f75375_read8(client, F75375_REG_VOLT_HIGH(nr)); 217 data->in_min[nr] = 218 f75375_read8(client, F75375_REG_VOLT_LOW(nr)); 219 } 220 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER); 221 data->last_limits = jiffies; 222 } 223 224 /* Measurement registers cache is refreshed after 2 second */ 225 if (time_after(jiffies, data->last_updated + 2 * HZ) 226 || !data->valid) { 227 for (nr = 0; nr < 2; nr++) { 228 data->pwm[nr] = f75375_read8(client, 229 F75375_REG_FAN_PWM_DUTY(nr)); 230 /* assign MSB, therefore shift it by 8 bits */ 231 data->temp11[nr] = 232 f75375_read8(client, F75375_REG_TEMP(nr)) << 8; 233 if (data->kind == f75387) 234 /* merge F75387's temperature LSB (11-bit) */ 235 data->temp11[nr] |= 236 f75375_read8(client, 237 F75387_REG_TEMP11_LSB(nr)); 238 data->fan[nr] = 239 f75375_read16(client, F75375_REG_FAN(nr)); 240 } 241 for (nr = 0; nr < 4; nr++) 242 data->in[nr] = 243 f75375_read8(client, F75375_REG_VOLT(nr)); 244 245 data->last_updated = jiffies; 246 data->valid = 1; 247 } 248 249 mutex_unlock(&data->update_lock); 250 return data; 251 } 252 253 static inline u16 rpm_from_reg(u16 reg) 254 { 255 if (reg == 0 || reg == 0xffff) 256 return 0; 257 return 1500000 / reg; 258 } 259 260 static inline u16 rpm_to_reg(int rpm) 261 { 262 if (rpm < 367 || rpm > 0xffff) 263 return 0xffff; 264 return 1500000 / rpm; 265 } 266 267 static bool duty_mode_enabled(u8 pwm_enable) 268 { 269 switch (pwm_enable) { 270 case 0: /* Manual, duty mode (full speed) */ 271 case 1: /* Manual, duty mode */ 272 case 4: /* Auto, duty mode */ 273 return true; 274 case 2: /* Auto, speed mode */ 275 case 3: /* Manual, speed mode */ 276 return false; 277 default: 278 BUG(); 279 } 280 } 281 282 static bool auto_mode_enabled(u8 pwm_enable) 283 { 284 switch (pwm_enable) { 285 case 0: /* Manual, duty mode (full speed) */ 286 case 1: /* Manual, duty mode */ 287 case 3: /* Manual, speed mode */ 288 return false; 289 case 2: /* Auto, speed mode */ 290 case 4: /* Auto, duty mode */ 291 return true; 292 default: 293 BUG(); 294 } 295 } 296 297 static ssize_t set_fan_min(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->fan_min[nr] = rpm_to_reg(val); 312 f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]); 313 mutex_unlock(&data->update_lock); 314 return count; 315 } 316 317 static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr, 318 const char *buf, size_t count) 319 { 320 int nr = to_sensor_dev_attr(attr)->index; 321 struct i2c_client *client = to_i2c_client(dev); 322 struct f75375_data *data = i2c_get_clientdata(client); 323 unsigned long val; 324 int err; 325 326 err = kstrtoul(buf, 10, &val); 327 if (err < 0) 328 return err; 329 330 if (auto_mode_enabled(data->pwm_enable[nr])) 331 return -EINVAL; 332 if (data->kind == f75387 && duty_mode_enabled(data->pwm_enable[nr])) 333 return -EINVAL; 334 335 mutex_lock(&data->update_lock); 336 data->fan_target[nr] = rpm_to_reg(val); 337 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]); 338 mutex_unlock(&data->update_lock); 339 return count; 340 } 341 342 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 343 const char *buf, size_t count) 344 { 345 int nr = to_sensor_dev_attr(attr)->index; 346 struct i2c_client *client = to_i2c_client(dev); 347 struct f75375_data *data = i2c_get_clientdata(client); 348 unsigned long val; 349 int err; 350 351 err = kstrtoul(buf, 10, &val); 352 if (err < 0) 353 return err; 354 355 if (auto_mode_enabled(data->pwm_enable[nr]) || 356 !duty_mode_enabled(data->pwm_enable[nr])) 357 return -EINVAL; 358 359 mutex_lock(&data->update_lock); 360 data->pwm[nr] = SENSORS_LIMIT(val, 0, 255); 361 f75375_write_pwm(client, nr); 362 mutex_unlock(&data->update_lock); 363 return count; 364 } 365 366 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute 367 *attr, char *buf) 368 { 369 int nr = to_sensor_dev_attr(attr)->index; 370 struct f75375_data *data = f75375_update_device(dev); 371 return sprintf(buf, "%d\n", data->pwm_enable[nr]); 372 } 373 374 static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val) 375 { 376 struct f75375_data *data = i2c_get_clientdata(client); 377 u8 fanmode; 378 379 if (val < 0 || val > 4) 380 return -EINVAL; 381 382 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER); 383 if (data->kind == f75387) { 384 /* For now, deny dangerous toggling of duty mode */ 385 if (duty_mode_enabled(data->pwm_enable[nr]) != 386 duty_mode_enabled(val)) 387 return -EOPNOTSUPP; 388 /* clear each fanX_mode bit before setting them properly */ 389 fanmode &= ~(1 << F75387_FAN_DUTY_MODE(nr)); 390 fanmode &= ~(1 << F75387_FAN_MANU_MODE(nr)); 391 switch (val) { 392 case 0: /* full speed */ 393 fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); 394 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr)); 395 data->pwm[nr] = 255; 396 break; 397 case 1: /* PWM */ 398 fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); 399 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr)); 400 break; 401 case 2: /* Automatic, speed mode */ 402 break; 403 case 3: /* fan speed */ 404 fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); 405 break; 406 case 4: /* Automatic, pwm */ 407 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr)); 408 break; 409 } 410 } else { 411 /* clear each fanX_mode bit before setting them properly */ 412 fanmode &= ~(3 << FAN_CTRL_MODE(nr)); 413 switch (val) { 414 case 0: /* full speed */ 415 fanmode |= (3 << FAN_CTRL_MODE(nr)); 416 data->pwm[nr] = 255; 417 break; 418 case 1: /* PWM */ 419 fanmode |= (3 << FAN_CTRL_MODE(nr)); 420 break; 421 case 2: /* AUTOMATIC*/ 422 fanmode |= (1 << FAN_CTRL_MODE(nr)); 423 break; 424 case 3: /* fan speed */ 425 break; 426 case 4: /* Automatic pwm */ 427 return -EINVAL; 428 } 429 } 430 431 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode); 432 data->pwm_enable[nr] = val; 433 if (val == 0) 434 f75375_write_pwm(client, nr); 435 return 0; 436 } 437 438 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, 439 const char *buf, size_t count) 440 { 441 int nr = to_sensor_dev_attr(attr)->index; 442 struct i2c_client *client = to_i2c_client(dev); 443 struct f75375_data *data = i2c_get_clientdata(client); 444 unsigned long val; 445 int err; 446 447 err = kstrtoul(buf, 10, &val); 448 if (err < 0) 449 return err; 450 451 mutex_lock(&data->update_lock); 452 err = set_pwm_enable_direct(client, nr, val); 453 mutex_unlock(&data->update_lock); 454 return err ? err : count; 455 } 456 457 static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr, 458 const char *buf, size_t count) 459 { 460 int nr = to_sensor_dev_attr(attr)->index; 461 struct i2c_client *client = to_i2c_client(dev); 462 struct f75375_data *data = i2c_get_clientdata(client); 463 unsigned long val; 464 int err; 465 u8 conf; 466 char reg, ctrl; 467 468 err = kstrtoul(buf, 10, &val); 469 if (err < 0) 470 return err; 471 472 if (!(val == 0 || val == 1)) 473 return -EINVAL; 474 475 /* F75373 does not support DC (linear voltage) fan control mode */ 476 if (data->kind == f75373 && val == 0) 477 return -EINVAL; 478 479 /* take care for different registers */ 480 if (data->kind == f75387) { 481 reg = F75375_REG_FAN_TIMER; 482 ctrl = F75387_FAN_CTRL_LINEAR(nr); 483 } else { 484 reg = F75375_REG_CONFIG1; 485 ctrl = F75375_FAN_CTRL_LINEAR(nr); 486 } 487 488 mutex_lock(&data->update_lock); 489 conf = f75375_read8(client, reg); 490 conf &= ~(1 << ctrl); 491 492 if (val == 0) 493 conf |= (1 << ctrl); 494 495 f75375_write8(client, reg, conf); 496 data->pwm_mode[nr] = val; 497 mutex_unlock(&data->update_lock); 498 return count; 499 } 500 501 static ssize_t show_pwm(struct device *dev, struct device_attribute 502 *attr, char *buf) 503 { 504 int nr = to_sensor_dev_attr(attr)->index; 505 struct f75375_data *data = f75375_update_device(dev); 506 return sprintf(buf, "%d\n", data->pwm[nr]); 507 } 508 509 static ssize_t show_pwm_mode(struct device *dev, struct device_attribute 510 *attr, char *buf) 511 { 512 int nr = to_sensor_dev_attr(attr)->index; 513 struct f75375_data *data = f75375_update_device(dev); 514 return sprintf(buf, "%d\n", data->pwm_mode[nr]); 515 } 516 517 #define VOLT_FROM_REG(val) ((val) * 8) 518 #define VOLT_TO_REG(val) ((val) / 8) 519 520 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 521 char *buf) 522 { 523 int nr = to_sensor_dev_attr(attr)->index; 524 struct f75375_data *data = f75375_update_device(dev); 525 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr])); 526 } 527 528 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 529 char *buf) 530 { 531 int nr = to_sensor_dev_attr(attr)->index; 532 struct f75375_data *data = f75375_update_device(dev); 533 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr])); 534 } 535 536 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 537 char *buf) 538 { 539 int nr = to_sensor_dev_attr(attr)->index; 540 struct f75375_data *data = f75375_update_device(dev); 541 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr])); 542 } 543 544 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 545 const char *buf, size_t count) 546 { 547 int nr = to_sensor_dev_attr(attr)->index; 548 struct i2c_client *client = to_i2c_client(dev); 549 struct f75375_data *data = i2c_get_clientdata(client); 550 unsigned long val; 551 int err; 552 553 err = kstrtoul(buf, 10, &val); 554 if (err < 0) 555 return err; 556 557 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); 558 mutex_lock(&data->update_lock); 559 data->in_max[nr] = val; 560 f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]); 561 mutex_unlock(&data->update_lock); 562 return count; 563 } 564 565 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 566 const char *buf, size_t count) 567 { 568 int nr = to_sensor_dev_attr(attr)->index; 569 struct i2c_client *client = to_i2c_client(dev); 570 struct f75375_data *data = i2c_get_clientdata(client); 571 unsigned long val; 572 int err; 573 574 err = kstrtoul(buf, 10, &val); 575 if (err < 0) 576 return err; 577 578 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); 579 mutex_lock(&data->update_lock); 580 data->in_min[nr] = val; 581 f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]); 582 mutex_unlock(&data->update_lock); 583 return count; 584 } 585 #define TEMP_FROM_REG(val) ((val) * 1000) 586 #define TEMP_TO_REG(val) ((val) / 1000) 587 #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) 588 589 static ssize_t show_temp11(struct device *dev, struct device_attribute *attr, 590 char *buf) 591 { 592 int nr = to_sensor_dev_attr(attr)->index; 593 struct f75375_data *data = f75375_update_device(dev); 594 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr])); 595 } 596 597 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 598 char *buf) 599 { 600 int nr = to_sensor_dev_attr(attr)->index; 601 struct f75375_data *data = f75375_update_device(dev); 602 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); 603 } 604 605 static ssize_t show_temp_max_hyst(struct device *dev, 606 struct device_attribute *attr, char *buf) 607 { 608 int nr = to_sensor_dev_attr(attr)->index; 609 struct f75375_data *data = f75375_update_device(dev); 610 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr])); 611 } 612 613 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 614 const char *buf, size_t count) 615 { 616 int nr = to_sensor_dev_attr(attr)->index; 617 struct i2c_client *client = to_i2c_client(dev); 618 struct f75375_data *data = i2c_get_clientdata(client); 619 unsigned long val; 620 int err; 621 622 err = kstrtoul(buf, 10, &val); 623 if (err < 0) 624 return err; 625 626 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); 627 mutex_lock(&data->update_lock); 628 data->temp_high[nr] = val; 629 f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]); 630 mutex_unlock(&data->update_lock); 631 return count; 632 } 633 634 static ssize_t set_temp_max_hyst(struct device *dev, 635 struct device_attribute *attr, const char *buf, size_t count) 636 { 637 int nr = to_sensor_dev_attr(attr)->index; 638 struct i2c_client *client = to_i2c_client(dev); 639 struct f75375_data *data = i2c_get_clientdata(client); 640 unsigned long val; 641 int err; 642 643 err = kstrtoul(buf, 10, &val); 644 if (err < 0) 645 return err; 646 647 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); 648 mutex_lock(&data->update_lock); 649 data->temp_max_hyst[nr] = val; 650 f75375_write8(client, F75375_REG_TEMP_HYST(nr), 651 data->temp_max_hyst[nr]); 652 mutex_unlock(&data->update_lock); 653 return count; 654 } 655 656 #define show_fan(thing) \ 657 static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \ 658 char *buf)\ 659 {\ 660 int nr = to_sensor_dev_attr(attr)->index;\ 661 struct f75375_data *data = f75375_update_device(dev); \ 662 return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \ 663 } 664 665 show_fan(fan); 666 show_fan(fan_min); 667 show_fan(fan_max); 668 show_fan(fan_target); 669 670 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); 671 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR, 672 show_in_max, set_in_max, 0); 673 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR, 674 show_in_min, set_in_min, 0); 675 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); 676 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR, 677 show_in_max, set_in_max, 1); 678 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR, 679 show_in_min, set_in_min, 1); 680 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); 681 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR, 682 show_in_max, set_in_max, 2); 683 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR, 684 show_in_min, set_in_min, 2); 685 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); 686 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR, 687 show_in_max, set_in_max, 3); 688 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR, 689 show_in_min, set_in_min, 3); 690 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0); 691 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, 692 show_temp_max_hyst, set_temp_max_hyst, 0); 693 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR, 694 show_temp_max, set_temp_max, 0); 695 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1); 696 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, 697 show_temp_max_hyst, set_temp_max_hyst, 1); 698 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR, 699 show_temp_max, set_temp_max, 1); 700 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); 701 static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0); 702 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR, 703 show_fan_min, set_fan_min, 0); 704 static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR, 705 show_fan_target, set_fan_target, 0); 706 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); 707 static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1); 708 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR, 709 show_fan_min, set_fan_min, 1); 710 static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR, 711 show_fan_target, set_fan_target, 1); 712 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR, 713 show_pwm, set_pwm, 0); 714 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR, 715 show_pwm_enable, set_pwm_enable, 0); 716 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, 717 show_pwm_mode, set_pwm_mode, 0); 718 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, 719 show_pwm, set_pwm, 1); 720 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR, 721 show_pwm_enable, set_pwm_enable, 1); 722 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO, 723 show_pwm_mode, set_pwm_mode, 1); 724 725 static struct attribute *f75375_attributes[] = { 726 &sensor_dev_attr_temp1_input.dev_attr.attr, 727 &sensor_dev_attr_temp1_max.dev_attr.attr, 728 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, 729 &sensor_dev_attr_temp2_input.dev_attr.attr, 730 &sensor_dev_attr_temp2_max.dev_attr.attr, 731 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, 732 &sensor_dev_attr_fan1_input.dev_attr.attr, 733 &sensor_dev_attr_fan1_max.dev_attr.attr, 734 &sensor_dev_attr_fan1_min.dev_attr.attr, 735 &sensor_dev_attr_fan1_target.dev_attr.attr, 736 &sensor_dev_attr_fan2_input.dev_attr.attr, 737 &sensor_dev_attr_fan2_max.dev_attr.attr, 738 &sensor_dev_attr_fan2_min.dev_attr.attr, 739 &sensor_dev_attr_fan2_target.dev_attr.attr, 740 &sensor_dev_attr_pwm1.dev_attr.attr, 741 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 742 &sensor_dev_attr_pwm1_mode.dev_attr.attr, 743 &sensor_dev_attr_pwm2.dev_attr.attr, 744 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 745 &sensor_dev_attr_pwm2_mode.dev_attr.attr, 746 &sensor_dev_attr_in0_input.dev_attr.attr, 747 &sensor_dev_attr_in0_max.dev_attr.attr, 748 &sensor_dev_attr_in0_min.dev_attr.attr, 749 &sensor_dev_attr_in1_input.dev_attr.attr, 750 &sensor_dev_attr_in1_max.dev_attr.attr, 751 &sensor_dev_attr_in1_min.dev_attr.attr, 752 &sensor_dev_attr_in2_input.dev_attr.attr, 753 &sensor_dev_attr_in2_max.dev_attr.attr, 754 &sensor_dev_attr_in2_min.dev_attr.attr, 755 &sensor_dev_attr_in3_input.dev_attr.attr, 756 &sensor_dev_attr_in3_max.dev_attr.attr, 757 &sensor_dev_attr_in3_min.dev_attr.attr, 758 NULL 759 }; 760 761 static const struct attribute_group f75375_group = { 762 .attrs = f75375_attributes, 763 }; 764 765 static void f75375_init(struct i2c_client *client, struct f75375_data *data, 766 struct f75375s_platform_data *f75375s_pdata) 767 { 768 int nr; 769 770 if (!f75375s_pdata) { 771 u8 conf, mode; 772 int nr; 773 774 conf = f75375_read8(client, F75375_REG_CONFIG1); 775 mode = f75375_read8(client, F75375_REG_FAN_TIMER); 776 for (nr = 0; nr < 2; nr++) { 777 if (data->kind == f75387) { 778 bool manu, duty; 779 780 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr)))) 781 data->pwm_mode[nr] = 1; 782 783 manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1); 784 duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1); 785 if (!manu && duty) 786 /* auto, pwm */ 787 data->pwm_enable[nr] = 4; 788 else if (manu && !duty) 789 /* manual, speed */ 790 data->pwm_enable[nr] = 3; 791 else if (!manu && !duty) 792 /* automatic, speed */ 793 data->pwm_enable[nr] = 2; 794 else 795 /* manual, pwm */ 796 data->pwm_enable[nr] = 1; 797 } else { 798 if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr)))) 799 data->pwm_mode[nr] = 1; 800 801 switch ((mode >> FAN_CTRL_MODE(nr)) & 3) { 802 case 0: /* speed */ 803 data->pwm_enable[nr] = 3; 804 break; 805 case 1: /* automatic */ 806 data->pwm_enable[nr] = 2; 807 break; 808 default: /* manual */ 809 data->pwm_enable[nr] = 1; 810 break; 811 } 812 } 813 } 814 return; 815 } 816 817 set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]); 818 set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]); 819 for (nr = 0; nr < 2; nr++) { 820 if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) || 821 !duty_mode_enabled(f75375s_pdata->pwm_enable[nr])) 822 continue; 823 data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255); 824 f75375_write_pwm(client, nr); 825 } 826 827 } 828 829 static int f75375_probe(struct i2c_client *client, 830 const struct i2c_device_id *id) 831 { 832 struct f75375_data *data; 833 struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data; 834 int err; 835 836 if (!i2c_check_functionality(client->adapter, 837 I2C_FUNC_SMBUS_BYTE_DATA)) 838 return -EIO; 839 data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL); 840 if (!data) 841 return -ENOMEM; 842 843 i2c_set_clientdata(client, data); 844 mutex_init(&data->update_lock); 845 data->kind = id->driver_data; 846 847 err = sysfs_create_group(&client->dev.kobj, &f75375_group); 848 if (err) 849 goto exit_free; 850 851 if (data->kind != f75373) { 852 err = sysfs_chmod_file(&client->dev.kobj, 853 &sensor_dev_attr_pwm1_mode.dev_attr.attr, 854 S_IRUGO | S_IWUSR); 855 if (err) 856 goto exit_remove; 857 err = sysfs_chmod_file(&client->dev.kobj, 858 &sensor_dev_attr_pwm2_mode.dev_attr.attr, 859 S_IRUGO | S_IWUSR); 860 if (err) 861 goto exit_remove; 862 } 863 864 data->hwmon_dev = hwmon_device_register(&client->dev); 865 if (IS_ERR(data->hwmon_dev)) { 866 err = PTR_ERR(data->hwmon_dev); 867 goto exit_remove; 868 } 869 870 f75375_init(client, data, f75375s_pdata); 871 872 return 0; 873 874 exit_remove: 875 sysfs_remove_group(&client->dev.kobj, &f75375_group); 876 exit_free: 877 kfree(data); 878 return err; 879 } 880 881 static int f75375_remove(struct i2c_client *client) 882 { 883 struct f75375_data *data = i2c_get_clientdata(client); 884 hwmon_device_unregister(data->hwmon_dev); 885 sysfs_remove_group(&client->dev.kobj, &f75375_group); 886 kfree(data); 887 return 0; 888 } 889 890 /* Return 0 if detection is successful, -ENODEV otherwise */ 891 static int f75375_detect(struct i2c_client *client, 892 struct i2c_board_info *info) 893 { 894 struct i2c_adapter *adapter = client->adapter; 895 u16 vendid, chipid; 896 u8 version; 897 const char *name; 898 899 vendid = f75375_read16(client, F75375_REG_VENDOR); 900 chipid = f75375_read16(client, F75375_CHIP_ID); 901 if (vendid != 0x1934) 902 return -ENODEV; 903 904 if (chipid == 0x0306) 905 name = "f75375"; 906 else if (chipid == 0x0204) 907 name = "f75373"; 908 else if (chipid == 0x0410) 909 name = "f75387"; 910 else 911 return -ENODEV; 912 913 version = f75375_read8(client, F75375_REG_VERSION); 914 dev_info(&adapter->dev, "found %s version: %02X\n", name, version); 915 strlcpy(info->type, name, I2C_NAME_SIZE); 916 917 return 0; 918 } 919 920 module_i2c_driver(f75375_driver); 921 922 MODULE_AUTHOR("Riku Voipio"); 923 MODULE_LICENSE("GPL"); 924 MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver"); 925