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 break; 344 case 1: /* PWM */ 345 fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); 346 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr)); 347 break; 348 case 2: /* AUTOMATIC*/ 349 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr)); 350 break; 351 case 3: /* fan speed */ 352 fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); 353 break; 354 } 355 } else { 356 /* clear each fanX_mode bit before setting them properly */ 357 fanmode &= ~(3 << FAN_CTRL_MODE(nr)); 358 switch (val) { 359 case 0: /* full speed */ 360 fanmode |= (3 << FAN_CTRL_MODE(nr)); 361 data->pwm[nr] = 255; 362 break; 363 case 1: /* PWM */ 364 fanmode |= (3 << FAN_CTRL_MODE(nr)); 365 break; 366 case 2: /* AUTOMATIC*/ 367 fanmode |= (1 << FAN_CTRL_MODE(nr)); 368 break; 369 case 3: /* fan speed */ 370 break; 371 } 372 } 373 374 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode); 375 data->pwm_enable[nr] = val; 376 if (val == 0) 377 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), 378 data->pwm[nr]); 379 return 0; 380 } 381 382 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr, 383 const char *buf, size_t count) 384 { 385 int nr = to_sensor_dev_attr(attr)->index; 386 struct i2c_client *client = to_i2c_client(dev); 387 struct f75375_data *data = i2c_get_clientdata(client); 388 unsigned long val; 389 int err; 390 391 err = kstrtoul(buf, 10, &val); 392 if (err < 0) 393 return err; 394 395 mutex_lock(&data->update_lock); 396 err = set_pwm_enable_direct(client, nr, val); 397 mutex_unlock(&data->update_lock); 398 return err ? err : count; 399 } 400 401 static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr, 402 const char *buf, size_t count) 403 { 404 int nr = to_sensor_dev_attr(attr)->index; 405 struct i2c_client *client = to_i2c_client(dev); 406 struct f75375_data *data = i2c_get_clientdata(client); 407 unsigned long val; 408 int err; 409 u8 conf; 410 char reg, ctrl; 411 412 err = kstrtoul(buf, 10, &val); 413 if (err < 0) 414 return err; 415 416 if (!(val == 0 || val == 1)) 417 return -EINVAL; 418 419 /* F75373 does not support DC (linear voltage) fan control mode */ 420 if (data->kind == f75373 && val == 0) 421 return -EINVAL; 422 423 /* take care for different registers */ 424 if (data->kind == f75387) { 425 reg = F75375_REG_FAN_TIMER; 426 ctrl = F75387_FAN_CTRL_LINEAR(nr); 427 } else { 428 reg = F75375_REG_CONFIG1; 429 ctrl = F75375_FAN_CTRL_LINEAR(nr); 430 } 431 432 mutex_lock(&data->update_lock); 433 conf = f75375_read8(client, reg); 434 conf &= ~(1 << ctrl); 435 436 if (val == 0) 437 conf |= (1 << ctrl); 438 439 f75375_write8(client, reg, conf); 440 data->pwm_mode[nr] = val; 441 mutex_unlock(&data->update_lock); 442 return count; 443 } 444 445 static ssize_t show_pwm(struct device *dev, struct device_attribute 446 *attr, char *buf) 447 { 448 int nr = to_sensor_dev_attr(attr)->index; 449 struct f75375_data *data = f75375_update_device(dev); 450 return sprintf(buf, "%d\n", data->pwm[nr]); 451 } 452 453 static ssize_t show_pwm_mode(struct device *dev, struct device_attribute 454 *attr, char *buf) 455 { 456 int nr = to_sensor_dev_attr(attr)->index; 457 struct f75375_data *data = f75375_update_device(dev); 458 return sprintf(buf, "%d\n", data->pwm_mode[nr]); 459 } 460 461 #define VOLT_FROM_REG(val) ((val) * 8) 462 #define VOLT_TO_REG(val) ((val) / 8) 463 464 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 465 char *buf) 466 { 467 int nr = to_sensor_dev_attr(attr)->index; 468 struct f75375_data *data = f75375_update_device(dev); 469 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr])); 470 } 471 472 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 473 char *buf) 474 { 475 int nr = to_sensor_dev_attr(attr)->index; 476 struct f75375_data *data = f75375_update_device(dev); 477 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr])); 478 } 479 480 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 481 char *buf) 482 { 483 int nr = to_sensor_dev_attr(attr)->index; 484 struct f75375_data *data = f75375_update_device(dev); 485 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr])); 486 } 487 488 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 489 const char *buf, size_t count) 490 { 491 int nr = to_sensor_dev_attr(attr)->index; 492 struct i2c_client *client = to_i2c_client(dev); 493 struct f75375_data *data = i2c_get_clientdata(client); 494 unsigned long val; 495 int err; 496 497 err = kstrtoul(buf, 10, &val); 498 if (err < 0) 499 return err; 500 501 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); 502 mutex_lock(&data->update_lock); 503 data->in_max[nr] = val; 504 f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]); 505 mutex_unlock(&data->update_lock); 506 return count; 507 } 508 509 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 510 const char *buf, size_t count) 511 { 512 int nr = to_sensor_dev_attr(attr)->index; 513 struct i2c_client *client = to_i2c_client(dev); 514 struct f75375_data *data = i2c_get_clientdata(client); 515 unsigned long val; 516 int err; 517 518 err = kstrtoul(buf, 10, &val); 519 if (err < 0) 520 return err; 521 522 val = SENSORS_LIMIT(VOLT_TO_REG(val), 0, 0xff); 523 mutex_lock(&data->update_lock); 524 data->in_min[nr] = val; 525 f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]); 526 mutex_unlock(&data->update_lock); 527 return count; 528 } 529 #define TEMP_FROM_REG(val) ((val) * 1000) 530 #define TEMP_TO_REG(val) ((val) / 1000) 531 #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) 532 533 static ssize_t show_temp11(struct device *dev, struct device_attribute *attr, 534 char *buf) 535 { 536 int nr = to_sensor_dev_attr(attr)->index; 537 struct f75375_data *data = f75375_update_device(dev); 538 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr])); 539 } 540 541 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 542 char *buf) 543 { 544 int nr = to_sensor_dev_attr(attr)->index; 545 struct f75375_data *data = f75375_update_device(dev); 546 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])); 547 } 548 549 static ssize_t show_temp_max_hyst(struct device *dev, 550 struct device_attribute *attr, char *buf) 551 { 552 int nr = to_sensor_dev_attr(attr)->index; 553 struct f75375_data *data = f75375_update_device(dev); 554 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr])); 555 } 556 557 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 558 const char *buf, size_t count) 559 { 560 int nr = to_sensor_dev_attr(attr)->index; 561 struct i2c_client *client = to_i2c_client(dev); 562 struct f75375_data *data = i2c_get_clientdata(client); 563 unsigned long val; 564 int err; 565 566 err = kstrtoul(buf, 10, &val); 567 if (err < 0) 568 return err; 569 570 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); 571 mutex_lock(&data->update_lock); 572 data->temp_high[nr] = val; 573 f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]); 574 mutex_unlock(&data->update_lock); 575 return count; 576 } 577 578 static ssize_t set_temp_max_hyst(struct device *dev, 579 struct device_attribute *attr, const char *buf, size_t count) 580 { 581 int nr = to_sensor_dev_attr(attr)->index; 582 struct i2c_client *client = to_i2c_client(dev); 583 struct f75375_data *data = i2c_get_clientdata(client); 584 unsigned long val; 585 int err; 586 587 err = kstrtoul(buf, 10, &val); 588 if (err < 0) 589 return err; 590 591 val = SENSORS_LIMIT(TEMP_TO_REG(val), 0, 127); 592 mutex_lock(&data->update_lock); 593 data->temp_max_hyst[nr] = val; 594 f75375_write8(client, F75375_REG_TEMP_HYST(nr), 595 data->temp_max_hyst[nr]); 596 mutex_unlock(&data->update_lock); 597 return count; 598 } 599 600 #define show_fan(thing) \ 601 static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \ 602 char *buf)\ 603 {\ 604 int nr = to_sensor_dev_attr(attr)->index;\ 605 struct f75375_data *data = f75375_update_device(dev); \ 606 return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \ 607 } 608 609 show_fan(fan); 610 show_fan(fan_min); 611 show_fan(fan_max); 612 show_fan(fan_target); 613 614 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); 615 static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR, 616 show_in_max, set_in_max, 0); 617 static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR, 618 show_in_min, set_in_min, 0); 619 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); 620 static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR, 621 show_in_max, set_in_max, 1); 622 static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR, 623 show_in_min, set_in_min, 1); 624 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); 625 static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR, 626 show_in_max, set_in_max, 2); 627 static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR, 628 show_in_min, set_in_min, 2); 629 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); 630 static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR, 631 show_in_max, set_in_max, 3); 632 static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR, 633 show_in_min, set_in_min, 3); 634 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0); 635 static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, 636 show_temp_max_hyst, set_temp_max_hyst, 0); 637 static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR, 638 show_temp_max, set_temp_max, 0); 639 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1); 640 static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, 641 show_temp_max_hyst, set_temp_max_hyst, 1); 642 static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR, 643 show_temp_max, set_temp_max, 1); 644 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); 645 static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0); 646 static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR, 647 show_fan_min, set_fan_min, 0); 648 static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR, 649 show_fan_target, set_fan_target, 0); 650 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); 651 static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1); 652 static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR, 653 show_fan_min, set_fan_min, 1); 654 static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR, 655 show_fan_target, set_fan_target, 1); 656 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR, 657 show_pwm, set_pwm, 0); 658 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR, 659 show_pwm_enable, set_pwm_enable, 0); 660 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, 661 show_pwm_mode, set_pwm_mode, 0); 662 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, 663 show_pwm, set_pwm, 1); 664 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR, 665 show_pwm_enable, set_pwm_enable, 1); 666 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO, 667 show_pwm_mode, set_pwm_mode, 1); 668 669 static struct attribute *f75375_attributes[] = { 670 &sensor_dev_attr_temp1_input.dev_attr.attr, 671 &sensor_dev_attr_temp1_max.dev_attr.attr, 672 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, 673 &sensor_dev_attr_temp2_input.dev_attr.attr, 674 &sensor_dev_attr_temp2_max.dev_attr.attr, 675 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, 676 &sensor_dev_attr_fan1_input.dev_attr.attr, 677 &sensor_dev_attr_fan1_max.dev_attr.attr, 678 &sensor_dev_attr_fan1_min.dev_attr.attr, 679 &sensor_dev_attr_fan1_target.dev_attr.attr, 680 &sensor_dev_attr_fan2_input.dev_attr.attr, 681 &sensor_dev_attr_fan2_max.dev_attr.attr, 682 &sensor_dev_attr_fan2_min.dev_attr.attr, 683 &sensor_dev_attr_fan2_target.dev_attr.attr, 684 &sensor_dev_attr_pwm1.dev_attr.attr, 685 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 686 &sensor_dev_attr_pwm1_mode.dev_attr.attr, 687 &sensor_dev_attr_pwm2.dev_attr.attr, 688 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 689 &sensor_dev_attr_pwm2_mode.dev_attr.attr, 690 &sensor_dev_attr_in0_input.dev_attr.attr, 691 &sensor_dev_attr_in0_max.dev_attr.attr, 692 &sensor_dev_attr_in0_min.dev_attr.attr, 693 &sensor_dev_attr_in1_input.dev_attr.attr, 694 &sensor_dev_attr_in1_max.dev_attr.attr, 695 &sensor_dev_attr_in1_min.dev_attr.attr, 696 &sensor_dev_attr_in2_input.dev_attr.attr, 697 &sensor_dev_attr_in2_max.dev_attr.attr, 698 &sensor_dev_attr_in2_min.dev_attr.attr, 699 &sensor_dev_attr_in3_input.dev_attr.attr, 700 &sensor_dev_attr_in3_max.dev_attr.attr, 701 &sensor_dev_attr_in3_min.dev_attr.attr, 702 NULL 703 }; 704 705 static const struct attribute_group f75375_group = { 706 .attrs = f75375_attributes, 707 }; 708 709 static void f75375_init(struct i2c_client *client, struct f75375_data *data, 710 struct f75375s_platform_data *f75375s_pdata) 711 { 712 int nr; 713 714 if (!f75375s_pdata) { 715 u8 conf, mode; 716 int nr; 717 718 conf = f75375_read8(client, F75375_REG_CONFIG1); 719 mode = f75375_read8(client, F75375_REG_FAN_TIMER); 720 for (nr = 0; nr < 2; nr++) { 721 if (data->kind == f75387) { 722 bool manu, duty; 723 724 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr)))) 725 data->pwm_mode[nr] = 1; 726 727 manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1); 728 duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1); 729 if (manu && duty) 730 /* speed */ 731 data->pwm_enable[nr] = 3; 732 else if (!manu && duty) 733 /* automatic */ 734 data->pwm_enable[nr] = 2; 735 else 736 /* manual */ 737 data->pwm_enable[nr] = 1; 738 } else { 739 if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr)))) 740 data->pwm_mode[nr] = 1; 741 742 switch ((mode >> FAN_CTRL_MODE(nr)) & 3) { 743 case 0: /* speed */ 744 data->pwm_enable[nr] = 3; 745 break; 746 case 1: /* automatic */ 747 data->pwm_enable[nr] = 2; 748 break; 749 default: /* manual */ 750 data->pwm_enable[nr] = 1; 751 break; 752 } 753 } 754 } 755 return; 756 } 757 758 set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]); 759 set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]); 760 for (nr = 0; nr < 2; nr++) { 761 data->pwm[nr] = SENSORS_LIMIT(f75375s_pdata->pwm[nr], 0, 255); 762 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), 763 data->pwm[nr]); 764 } 765 766 } 767 768 static int f75375_probe(struct i2c_client *client, 769 const struct i2c_device_id *id) 770 { 771 struct f75375_data *data; 772 struct f75375s_platform_data *f75375s_pdata = client->dev.platform_data; 773 int err; 774 775 if (!i2c_check_functionality(client->adapter, 776 I2C_FUNC_SMBUS_BYTE_DATA)) 777 return -EIO; 778 data = kzalloc(sizeof(struct f75375_data), GFP_KERNEL); 779 if (!data) 780 return -ENOMEM; 781 782 i2c_set_clientdata(client, data); 783 mutex_init(&data->update_lock); 784 data->kind = id->driver_data; 785 786 err = sysfs_create_group(&client->dev.kobj, &f75375_group); 787 if (err) 788 goto exit_free; 789 790 if (data->kind == f75375) { 791 err = sysfs_chmod_file(&client->dev.kobj, 792 &sensor_dev_attr_pwm1_mode.dev_attr.attr, 793 S_IRUGO | S_IWUSR); 794 if (err) 795 goto exit_remove; 796 err = sysfs_chmod_file(&client->dev.kobj, 797 &sensor_dev_attr_pwm2_mode.dev_attr.attr, 798 S_IRUGO | S_IWUSR); 799 if (err) 800 goto exit_remove; 801 } 802 803 data->hwmon_dev = hwmon_device_register(&client->dev); 804 if (IS_ERR(data->hwmon_dev)) { 805 err = PTR_ERR(data->hwmon_dev); 806 goto exit_remove; 807 } 808 809 f75375_init(client, data, f75375s_pdata); 810 811 return 0; 812 813 exit_remove: 814 sysfs_remove_group(&client->dev.kobj, &f75375_group); 815 exit_free: 816 kfree(data); 817 return err; 818 } 819 820 static int f75375_remove(struct i2c_client *client) 821 { 822 struct f75375_data *data = i2c_get_clientdata(client); 823 hwmon_device_unregister(data->hwmon_dev); 824 sysfs_remove_group(&client->dev.kobj, &f75375_group); 825 kfree(data); 826 return 0; 827 } 828 829 /* Return 0 if detection is successful, -ENODEV otherwise */ 830 static int f75375_detect(struct i2c_client *client, 831 struct i2c_board_info *info) 832 { 833 struct i2c_adapter *adapter = client->adapter; 834 u16 vendid, chipid; 835 u8 version; 836 const char *name; 837 838 vendid = f75375_read16(client, F75375_REG_VENDOR); 839 chipid = f75375_read16(client, F75375_CHIP_ID); 840 if (vendid != 0x1934) 841 return -ENODEV; 842 843 if (chipid == 0x0306) 844 name = "f75375"; 845 else if (chipid == 0x0204) 846 name = "f75373"; 847 else if (chipid == 0x0410) 848 name = "f75387"; 849 else 850 return -ENODEV; 851 852 version = f75375_read8(client, F75375_REG_VERSION); 853 dev_info(&adapter->dev, "found %s version: %02X\n", name, version); 854 strlcpy(info->type, name, I2C_NAME_SIZE); 855 856 return 0; 857 } 858 859 static int __init sensors_f75375_init(void) 860 { 861 return i2c_add_driver(&f75375_driver); 862 } 863 864 static void __exit sensors_f75375_exit(void) 865 { 866 i2c_del_driver(&f75375_driver); 867 } 868 869 MODULE_AUTHOR("Riku Voipio"); 870 MODULE_LICENSE("GPL"); 871 MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver"); 872 873 module_init(sensors_f75375_init); 874 module_exit(sensors_f75375_exit); 875