1 /* 2 * f71805f.c - driver for the Fintek F71805F/FG Super-I/O chip integrated 3 * hardware monitoring features 4 * Copyright (C) 2005 Jean Delvare <khali@linux-fr.org> 5 * 6 * The F71805F/FG is a LPC Super-I/O chip made by Fintek. It integrates 7 * complete hardware monitoring features: voltage, fan and temperature 8 * sensors, and manual and automatic fan speed control. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 23 */ 24 25 #include <linux/module.h> 26 #include <linux/init.h> 27 #include <linux/slab.h> 28 #include <linux/jiffies.h> 29 #include <linux/platform_device.h> 30 #include <linux/hwmon.h> 31 #include <linux/hwmon-sysfs.h> 32 #include <linux/err.h> 33 #include <linux/mutex.h> 34 #include <asm/io.h> 35 36 static struct platform_device *pdev; 37 38 #define DRVNAME "f71805f" 39 40 /* 41 * Super-I/O constants and functions 42 */ 43 44 #define F71805F_LD_HWM 0x04 45 46 #define SIO_REG_LDSEL 0x07 /* Logical device select */ 47 #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ 48 #define SIO_REG_DEVREV 0x22 /* Device revision */ 49 #define SIO_REG_MANID 0x23 /* Fintek ID (2 bytes) */ 50 #define SIO_REG_ENABLE 0x30 /* Logical device enable */ 51 #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ 52 53 #define SIO_FINTEK_ID 0x1934 54 #define SIO_F71805F_ID 0x0406 55 56 static inline int 57 superio_inb(int base, int reg) 58 { 59 outb(reg, base); 60 return inb(base + 1); 61 } 62 63 static int 64 superio_inw(int base, int reg) 65 { 66 int val; 67 outb(reg++, base); 68 val = inb(base + 1) << 8; 69 outb(reg, base); 70 val |= inb(base + 1); 71 return val; 72 } 73 74 static inline void 75 superio_select(int base, int ld) 76 { 77 outb(SIO_REG_LDSEL, base); 78 outb(ld, base + 1); 79 } 80 81 static inline void 82 superio_enter(int base) 83 { 84 outb(0x87, base); 85 outb(0x87, base); 86 } 87 88 static inline void 89 superio_exit(int base) 90 { 91 outb(0xaa, base); 92 } 93 94 /* 95 * ISA constants 96 */ 97 98 #define REGION_LENGTH 2 99 #define ADDR_REG_OFFSET 0 100 #define DATA_REG_OFFSET 1 101 102 /* 103 * Registers 104 */ 105 106 /* in nr from 0 to 8 (8-bit values) */ 107 #define F71805F_REG_IN(nr) (0x10 + (nr)) 108 #define F71805F_REG_IN_HIGH(nr) (0x40 + 2 * (nr)) 109 #define F71805F_REG_IN_LOW(nr) (0x41 + 2 * (nr)) 110 /* fan nr from 0 to 2 (12-bit values, two registers) */ 111 #define F71805F_REG_FAN(nr) (0x20 + 2 * (nr)) 112 #define F71805F_REG_FAN_LOW(nr) (0x28 + 2 * (nr)) 113 #define F71805F_REG_FAN_CTRL(nr) (0x60 + 16 * (nr)) 114 /* temp nr from 0 to 2 (8-bit values) */ 115 #define F71805F_REG_TEMP(nr) (0x1B + (nr)) 116 #define F71805F_REG_TEMP_HIGH(nr) (0x54 + 2 * (nr)) 117 #define F71805F_REG_TEMP_HYST(nr) (0x55 + 2 * (nr)) 118 #define F71805F_REG_TEMP_MODE 0x01 119 120 #define F71805F_REG_START 0x00 121 /* status nr from 0 to 2 */ 122 #define F71805F_REG_STATUS(nr) (0x36 + (nr)) 123 124 /* 125 * Data structures and manipulation thereof 126 */ 127 128 struct f71805f_data { 129 unsigned short addr; 130 const char *name; 131 struct mutex lock; 132 struct class_device *class_dev; 133 134 struct mutex update_lock; 135 char valid; /* !=0 if following fields are valid */ 136 unsigned long last_updated; /* In jiffies */ 137 unsigned long last_limits; /* In jiffies */ 138 139 /* Register values */ 140 u8 in[9]; 141 u8 in_high[9]; 142 u8 in_low[9]; 143 u16 fan[3]; 144 u16 fan_low[3]; 145 u8 fan_enabled; /* Read once at init time */ 146 u8 temp[3]; 147 u8 temp_high[3]; 148 u8 temp_hyst[3]; 149 u8 temp_mode; 150 u8 alarms[3]; 151 }; 152 153 static inline long in_from_reg(u8 reg) 154 { 155 return (reg * 8); 156 } 157 158 /* The 2 least significant bits are not used */ 159 static inline u8 in_to_reg(long val) 160 { 161 if (val <= 0) 162 return 0; 163 if (val >= 2016) 164 return 0xfc; 165 return (((val + 16) / 32) << 2); 166 } 167 168 /* in0 is downscaled by a factor 2 internally */ 169 static inline long in0_from_reg(u8 reg) 170 { 171 return (reg * 16); 172 } 173 174 static inline u8 in0_to_reg(long val) 175 { 176 if (val <= 0) 177 return 0; 178 if (val >= 4032) 179 return 0xfc; 180 return (((val + 32) / 64) << 2); 181 } 182 183 /* The 4 most significant bits are not used */ 184 static inline long fan_from_reg(u16 reg) 185 { 186 reg &= 0xfff; 187 if (!reg || reg == 0xfff) 188 return 0; 189 return (1500000 / reg); 190 } 191 192 static inline u16 fan_to_reg(long rpm) 193 { 194 /* If the low limit is set below what the chip can measure, 195 store the largest possible 12-bit value in the registers, 196 so that no alarm will ever trigger. */ 197 if (rpm < 367) 198 return 0xfff; 199 return (1500000 / rpm); 200 } 201 202 static inline long temp_from_reg(u8 reg) 203 { 204 return (reg * 1000); 205 } 206 207 static inline u8 temp_to_reg(long val) 208 { 209 if (val < 0) 210 val = 0; 211 else if (val > 1000 * 0xff) 212 val = 0xff; 213 return ((val + 500) / 1000); 214 } 215 216 /* 217 * Device I/O access 218 */ 219 220 static u8 f71805f_read8(struct f71805f_data *data, u8 reg) 221 { 222 u8 val; 223 224 mutex_lock(&data->lock); 225 outb(reg, data->addr + ADDR_REG_OFFSET); 226 val = inb(data->addr + DATA_REG_OFFSET); 227 mutex_unlock(&data->lock); 228 229 return val; 230 } 231 232 static void f71805f_write8(struct f71805f_data *data, u8 reg, u8 val) 233 { 234 mutex_lock(&data->lock); 235 outb(reg, data->addr + ADDR_REG_OFFSET); 236 outb(val, data->addr + DATA_REG_OFFSET); 237 mutex_unlock(&data->lock); 238 } 239 240 /* It is important to read the MSB first, because doing so latches the 241 value of the LSB, so we are sure both bytes belong to the same value. */ 242 static u16 f71805f_read16(struct f71805f_data *data, u8 reg) 243 { 244 u16 val; 245 246 mutex_lock(&data->lock); 247 outb(reg, data->addr + ADDR_REG_OFFSET); 248 val = inb(data->addr + DATA_REG_OFFSET) << 8; 249 outb(++reg, data->addr + ADDR_REG_OFFSET); 250 val |= inb(data->addr + DATA_REG_OFFSET); 251 mutex_unlock(&data->lock); 252 253 return val; 254 } 255 256 static void f71805f_write16(struct f71805f_data *data, u8 reg, u16 val) 257 { 258 mutex_lock(&data->lock); 259 outb(reg, data->addr + ADDR_REG_OFFSET); 260 outb(val >> 8, data->addr + DATA_REG_OFFSET); 261 outb(++reg, data->addr + ADDR_REG_OFFSET); 262 outb(val & 0xff, data->addr + DATA_REG_OFFSET); 263 mutex_unlock(&data->lock); 264 } 265 266 static struct f71805f_data *f71805f_update_device(struct device *dev) 267 { 268 struct f71805f_data *data = dev_get_drvdata(dev); 269 int nr; 270 271 mutex_lock(&data->update_lock); 272 273 /* Limit registers cache is refreshed after 60 seconds */ 274 if (time_after(jiffies, data->last_updated + 60 * HZ) 275 || !data->valid) { 276 for (nr = 0; nr < 9; nr++) { 277 data->in_high[nr] = f71805f_read8(data, 278 F71805F_REG_IN_HIGH(nr)); 279 data->in_low[nr] = f71805f_read8(data, 280 F71805F_REG_IN_LOW(nr)); 281 } 282 for (nr = 0; nr < 3; nr++) { 283 if (data->fan_enabled & (1 << nr)) 284 data->fan_low[nr] = f71805f_read16(data, 285 F71805F_REG_FAN_LOW(nr)); 286 } 287 for (nr = 0; nr < 3; nr++) { 288 data->temp_high[nr] = f71805f_read8(data, 289 F71805F_REG_TEMP_HIGH(nr)); 290 data->temp_hyst[nr] = f71805f_read8(data, 291 F71805F_REG_TEMP_HYST(nr)); 292 } 293 data->temp_mode = f71805f_read8(data, F71805F_REG_TEMP_MODE); 294 295 data->last_limits = jiffies; 296 } 297 298 /* Measurement registers cache is refreshed after 1 second */ 299 if (time_after(jiffies, data->last_updated + HZ) 300 || !data->valid) { 301 for (nr = 0; nr < 9; nr++) { 302 data->in[nr] = f71805f_read8(data, 303 F71805F_REG_IN(nr)); 304 } 305 for (nr = 0; nr < 3; nr++) { 306 if (data->fan_enabled & (1 << nr)) 307 data->fan[nr] = f71805f_read16(data, 308 F71805F_REG_FAN(nr)); 309 } 310 for (nr = 0; nr < 3; nr++) { 311 data->temp[nr] = f71805f_read8(data, 312 F71805F_REG_TEMP(nr)); 313 } 314 for (nr = 0; nr < 3; nr++) { 315 data->alarms[nr] = f71805f_read8(data, 316 F71805F_REG_STATUS(nr)); 317 } 318 319 data->last_updated = jiffies; 320 data->valid = 1; 321 } 322 323 mutex_unlock(&data->update_lock); 324 325 return data; 326 } 327 328 /* 329 * Sysfs interface 330 */ 331 332 static ssize_t show_in0(struct device *dev, struct device_attribute *devattr, 333 char *buf) 334 { 335 struct f71805f_data *data = f71805f_update_device(dev); 336 337 return sprintf(buf, "%ld\n", in0_from_reg(data->in[0])); 338 } 339 340 static ssize_t show_in0_max(struct device *dev, struct device_attribute 341 *devattr, char *buf) 342 { 343 struct f71805f_data *data = f71805f_update_device(dev); 344 345 return sprintf(buf, "%ld\n", in0_from_reg(data->in_high[0])); 346 } 347 348 static ssize_t show_in0_min(struct device *dev, struct device_attribute 349 *devattr, char *buf) 350 { 351 struct f71805f_data *data = f71805f_update_device(dev); 352 353 return sprintf(buf, "%ld\n", in0_from_reg(data->in_low[0])); 354 } 355 356 static ssize_t set_in0_max(struct device *dev, struct device_attribute 357 *devattr, const char *buf, size_t count) 358 { 359 struct f71805f_data *data = dev_get_drvdata(dev); 360 long val = simple_strtol(buf, NULL, 10); 361 362 mutex_lock(&data->update_lock); 363 data->in_high[0] = in0_to_reg(val); 364 f71805f_write8(data, F71805F_REG_IN_HIGH(0), data->in_high[0]); 365 mutex_unlock(&data->update_lock); 366 367 return count; 368 } 369 370 static ssize_t set_in0_min(struct device *dev, struct device_attribute 371 *devattr, const char *buf, size_t count) 372 { 373 struct f71805f_data *data = dev_get_drvdata(dev); 374 long val = simple_strtol(buf, NULL, 10); 375 376 mutex_lock(&data->update_lock); 377 data->in_low[0] = in0_to_reg(val); 378 f71805f_write8(data, F71805F_REG_IN_LOW(0), data->in_low[0]); 379 mutex_unlock(&data->update_lock); 380 381 return count; 382 } 383 384 static ssize_t show_in(struct device *dev, struct device_attribute *devattr, 385 char *buf) 386 { 387 struct f71805f_data *data = f71805f_update_device(dev); 388 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 389 int nr = attr->index; 390 391 return sprintf(buf, "%ld\n", in_from_reg(data->in[nr])); 392 } 393 394 static ssize_t show_in_max(struct device *dev, struct device_attribute 395 *devattr, char *buf) 396 { 397 struct f71805f_data *data = f71805f_update_device(dev); 398 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 399 int nr = attr->index; 400 401 return sprintf(buf, "%ld\n", in_from_reg(data->in_high[nr])); 402 } 403 404 static ssize_t show_in_min(struct device *dev, struct device_attribute 405 *devattr, char *buf) 406 { 407 struct f71805f_data *data = f71805f_update_device(dev); 408 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 409 int nr = attr->index; 410 411 return sprintf(buf, "%ld\n", in_from_reg(data->in_low[nr])); 412 } 413 414 static ssize_t set_in_max(struct device *dev, struct device_attribute 415 *devattr, const char *buf, size_t count) 416 { 417 struct f71805f_data *data = dev_get_drvdata(dev); 418 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 419 int nr = attr->index; 420 long val = simple_strtol(buf, NULL, 10); 421 422 mutex_lock(&data->update_lock); 423 data->in_high[nr] = in_to_reg(val); 424 f71805f_write8(data, F71805F_REG_IN_HIGH(nr), data->in_high[nr]); 425 mutex_unlock(&data->update_lock); 426 427 return count; 428 } 429 430 static ssize_t set_in_min(struct device *dev, struct device_attribute 431 *devattr, const char *buf, size_t count) 432 { 433 struct f71805f_data *data = dev_get_drvdata(dev); 434 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 435 int nr = attr->index; 436 long val = simple_strtol(buf, NULL, 10); 437 438 mutex_lock(&data->update_lock); 439 data->in_low[nr] = in_to_reg(val); 440 f71805f_write8(data, F71805F_REG_IN_LOW(nr), data->in_low[nr]); 441 mutex_unlock(&data->update_lock); 442 443 return count; 444 } 445 446 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, 447 char *buf) 448 { 449 struct f71805f_data *data = f71805f_update_device(dev); 450 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 451 int nr = attr->index; 452 453 return sprintf(buf, "%ld\n", fan_from_reg(data->fan[nr])); 454 } 455 456 static ssize_t show_fan_min(struct device *dev, struct device_attribute 457 *devattr, char *buf) 458 { 459 struct f71805f_data *data = f71805f_update_device(dev); 460 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 461 int nr = attr->index; 462 463 return sprintf(buf, "%ld\n", fan_from_reg(data->fan_low[nr])); 464 } 465 466 static ssize_t set_fan_min(struct device *dev, struct device_attribute 467 *devattr, const char *buf, size_t count) 468 { 469 struct f71805f_data *data = dev_get_drvdata(dev); 470 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 471 int nr = attr->index; 472 long val = simple_strtol(buf, NULL, 10); 473 474 mutex_lock(&data->update_lock); 475 data->fan_low[nr] = fan_to_reg(val); 476 f71805f_write16(data, F71805F_REG_FAN_LOW(nr), data->fan_low[nr]); 477 mutex_unlock(&data->update_lock); 478 479 return count; 480 } 481 482 static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, 483 char *buf) 484 { 485 struct f71805f_data *data = f71805f_update_device(dev); 486 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 487 int nr = attr->index; 488 489 return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr])); 490 } 491 492 static ssize_t show_temp_max(struct device *dev, struct device_attribute 493 *devattr, char *buf) 494 { 495 struct f71805f_data *data = f71805f_update_device(dev); 496 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 497 int nr = attr->index; 498 499 return sprintf(buf, "%ld\n", temp_from_reg(data->temp_high[nr])); 500 } 501 502 static ssize_t show_temp_hyst(struct device *dev, struct device_attribute 503 *devattr, char *buf) 504 { 505 struct f71805f_data *data = f71805f_update_device(dev); 506 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 507 int nr = attr->index; 508 509 return sprintf(buf, "%ld\n", temp_from_reg(data->temp_hyst[nr])); 510 } 511 512 static ssize_t show_temp_type(struct device *dev, struct device_attribute 513 *devattr, char *buf) 514 { 515 struct f71805f_data *data = f71805f_update_device(dev); 516 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 517 int nr = attr->index; 518 519 /* 3 is diode, 4 is thermistor */ 520 return sprintf(buf, "%u\n", (data->temp_mode & (1 << nr)) ? 3 : 4); 521 } 522 523 static ssize_t set_temp_max(struct device *dev, struct device_attribute 524 *devattr, const char *buf, size_t count) 525 { 526 struct f71805f_data *data = dev_get_drvdata(dev); 527 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 528 int nr = attr->index; 529 long val = simple_strtol(buf, NULL, 10); 530 531 mutex_lock(&data->update_lock); 532 data->temp_high[nr] = temp_to_reg(val); 533 f71805f_write8(data, F71805F_REG_TEMP_HIGH(nr), data->temp_high[nr]); 534 mutex_unlock(&data->update_lock); 535 536 return count; 537 } 538 539 static ssize_t set_temp_hyst(struct device *dev, struct device_attribute 540 *devattr, const char *buf, size_t count) 541 { 542 struct f71805f_data *data = dev_get_drvdata(dev); 543 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 544 int nr = attr->index; 545 long val = simple_strtol(buf, NULL, 10); 546 547 mutex_lock(&data->update_lock); 548 data->temp_hyst[nr] = temp_to_reg(val); 549 f71805f_write8(data, F71805F_REG_TEMP_HYST(nr), data->temp_hyst[nr]); 550 mutex_unlock(&data->update_lock); 551 552 return count; 553 } 554 555 static ssize_t show_alarms_in(struct device *dev, struct device_attribute 556 *devattr, char *buf) 557 { 558 struct f71805f_data *data = f71805f_update_device(dev); 559 560 return sprintf(buf, "%d\n", data->alarms[0] | 561 ((data->alarms[1] & 0x01) << 8)); 562 } 563 564 static ssize_t show_alarms_fan(struct device *dev, struct device_attribute 565 *devattr, char *buf) 566 { 567 struct f71805f_data *data = f71805f_update_device(dev); 568 569 return sprintf(buf, "%d\n", data->alarms[2] & 0x07); 570 } 571 572 static ssize_t show_alarms_temp(struct device *dev, struct device_attribute 573 *devattr, char *buf) 574 { 575 struct f71805f_data *data = f71805f_update_device(dev); 576 577 return sprintf(buf, "%d\n", (data->alarms[1] >> 3) & 0x07); 578 } 579 580 static ssize_t show_name(struct device *dev, struct device_attribute 581 *devattr, char *buf) 582 { 583 struct f71805f_data *data = dev_get_drvdata(dev); 584 585 return sprintf(buf, "%s\n", data->name); 586 } 587 588 static struct device_attribute f71805f_dev_attr[] = { 589 __ATTR(in0_input, S_IRUGO, show_in0, NULL), 590 __ATTR(in0_max, S_IRUGO| S_IWUSR, show_in0_max, set_in0_max), 591 __ATTR(in0_min, S_IRUGO| S_IWUSR, show_in0_min, set_in0_min), 592 __ATTR(alarms_in, S_IRUGO, show_alarms_in, NULL), 593 __ATTR(alarms_fan, S_IRUGO, show_alarms_fan, NULL), 594 __ATTR(alarms_temp, S_IRUGO, show_alarms_temp, NULL), 595 __ATTR(name, S_IRUGO, show_name, NULL), 596 }; 597 598 static struct sensor_device_attribute f71805f_sensor_attr[] = { 599 SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1), 600 SENSOR_ATTR(in1_max, S_IRUGO | S_IWUSR, 601 show_in_max, set_in_max, 1), 602 SENSOR_ATTR(in1_min, S_IRUGO | S_IWUSR, 603 show_in_min, set_in_min, 1), 604 SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2), 605 SENSOR_ATTR(in2_max, S_IRUGO | S_IWUSR, 606 show_in_max, set_in_max, 2), 607 SENSOR_ATTR(in2_min, S_IRUGO | S_IWUSR, 608 show_in_min, set_in_min, 2), 609 SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3), 610 SENSOR_ATTR(in3_max, S_IRUGO | S_IWUSR, 611 show_in_max, set_in_max, 3), 612 SENSOR_ATTR(in3_min, S_IRUGO | S_IWUSR, 613 show_in_min, set_in_min, 3), 614 SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4), 615 SENSOR_ATTR(in4_max, S_IRUGO | S_IWUSR, 616 show_in_max, set_in_max, 4), 617 SENSOR_ATTR(in4_min, S_IRUGO | S_IWUSR, 618 show_in_min, set_in_min, 4), 619 SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5), 620 SENSOR_ATTR(in5_max, S_IRUGO | S_IWUSR, 621 show_in_max, set_in_max, 5), 622 SENSOR_ATTR(in5_min, S_IRUGO | S_IWUSR, 623 show_in_min, set_in_min, 5), 624 SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6), 625 SENSOR_ATTR(in6_max, S_IRUGO | S_IWUSR, 626 show_in_max, set_in_max, 6), 627 SENSOR_ATTR(in6_min, S_IRUGO | S_IWUSR, 628 show_in_min, set_in_min, 6), 629 SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7), 630 SENSOR_ATTR(in7_max, S_IRUGO | S_IWUSR, 631 show_in_max, set_in_max, 7), 632 SENSOR_ATTR(in7_min, S_IRUGO | S_IWUSR, 633 show_in_min, set_in_min, 7), 634 SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8), 635 SENSOR_ATTR(in8_max, S_IRUGO | S_IWUSR, 636 show_in_max, set_in_max, 8), 637 SENSOR_ATTR(in8_min, S_IRUGO | S_IWUSR, 638 show_in_min, set_in_min, 8), 639 640 SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0), 641 SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, 642 show_temp_max, set_temp_max, 0), 643 SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, 644 show_temp_hyst, set_temp_hyst, 0), 645 SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0), 646 SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1), 647 SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, 648 show_temp_max, set_temp_max, 1), 649 SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, 650 show_temp_hyst, set_temp_hyst, 1), 651 SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1), 652 SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2), 653 SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, 654 show_temp_max, set_temp_max, 2), 655 SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, 656 show_temp_hyst, set_temp_hyst, 2), 657 SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2), 658 }; 659 660 static struct sensor_device_attribute f71805f_fan_attr[] = { 661 SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), 662 SENSOR_ATTR(fan1_min, S_IRUGO | S_IWUSR, 663 show_fan_min, set_fan_min, 0), 664 SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), 665 SENSOR_ATTR(fan2_min, S_IRUGO | S_IWUSR, 666 show_fan_min, set_fan_min, 1), 667 SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), 668 SENSOR_ATTR(fan3_min, S_IRUGO | S_IWUSR, 669 show_fan_min, set_fan_min, 2), 670 }; 671 672 /* 673 * Device registration and initialization 674 */ 675 676 static void __devinit f71805f_init_device(struct f71805f_data *data) 677 { 678 u8 reg; 679 int i; 680 681 reg = f71805f_read8(data, F71805F_REG_START); 682 if ((reg & 0x41) != 0x01) { 683 printk(KERN_DEBUG DRVNAME ": Starting monitoring " 684 "operations\n"); 685 f71805f_write8(data, F71805F_REG_START, (reg | 0x01) & ~0x40); 686 } 687 688 /* Fan monitoring can be disabled. If it is, we won't be polling 689 the register values, and won't create the related sysfs files. */ 690 for (i = 0; i < 3; i++) { 691 reg = f71805f_read8(data, F71805F_REG_FAN_CTRL(i)); 692 if (!(reg & 0x80)) 693 data->fan_enabled |= (1 << i); 694 } 695 } 696 697 static int __devinit f71805f_probe(struct platform_device *pdev) 698 { 699 struct f71805f_data *data; 700 struct resource *res; 701 int i, err; 702 703 if (!(data = kzalloc(sizeof(struct f71805f_data), GFP_KERNEL))) { 704 err = -ENOMEM; 705 printk(KERN_ERR DRVNAME ": Out of memory\n"); 706 goto exit; 707 } 708 709 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 710 data->addr = res->start; 711 mutex_init(&data->lock); 712 data->name = "f71805f"; 713 mutex_init(&data->update_lock); 714 715 platform_set_drvdata(pdev, data); 716 717 data->class_dev = hwmon_device_register(&pdev->dev); 718 if (IS_ERR(data->class_dev)) { 719 err = PTR_ERR(data->class_dev); 720 dev_err(&pdev->dev, "Class registration failed (%d)\n", err); 721 goto exit_free; 722 } 723 724 /* Initialize the F71805F chip */ 725 f71805f_init_device(data); 726 727 /* Register sysfs interface files */ 728 for (i = 0; i < ARRAY_SIZE(f71805f_dev_attr); i++) { 729 err = device_create_file(&pdev->dev, &f71805f_dev_attr[i]); 730 if (err) 731 goto exit_class; 732 } 733 for (i = 0; i < ARRAY_SIZE(f71805f_sensor_attr); i++) { 734 err = device_create_file(&pdev->dev, 735 &f71805f_sensor_attr[i].dev_attr); 736 if (err) 737 goto exit_class; 738 } 739 for (i = 0; i < ARRAY_SIZE(f71805f_fan_attr); i++) { 740 if (!(data->fan_enabled & (1 << (i / 2)))) 741 continue; 742 err = device_create_file(&pdev->dev, 743 &f71805f_fan_attr[i].dev_attr); 744 if (err) 745 goto exit_class; 746 } 747 748 return 0; 749 750 exit_class: 751 dev_err(&pdev->dev, "Sysfs interface creation failed\n"); 752 hwmon_device_unregister(data->class_dev); 753 exit_free: 754 kfree(data); 755 exit: 756 return err; 757 } 758 759 static int __devexit f71805f_remove(struct platform_device *pdev) 760 { 761 struct f71805f_data *data = platform_get_drvdata(pdev); 762 763 platform_set_drvdata(pdev, NULL); 764 hwmon_device_unregister(data->class_dev); 765 kfree(data); 766 767 return 0; 768 } 769 770 static struct platform_driver f71805f_driver = { 771 .driver = { 772 .owner = THIS_MODULE, 773 .name = DRVNAME, 774 }, 775 .probe = f71805f_probe, 776 .remove = __devexit_p(f71805f_remove), 777 }; 778 779 static int __init f71805f_device_add(unsigned short address) 780 { 781 struct resource res = { 782 .start = address, 783 .end = address + REGION_LENGTH - 1, 784 .flags = IORESOURCE_IO, 785 }; 786 int err; 787 788 pdev = platform_device_alloc(DRVNAME, address); 789 if (!pdev) { 790 err = -ENOMEM; 791 printk(KERN_ERR DRVNAME ": Device allocation failed\n"); 792 goto exit; 793 } 794 795 res.name = pdev->name; 796 err = platform_device_add_resources(pdev, &res, 1); 797 if (err) { 798 printk(KERN_ERR DRVNAME ": Device resource addition failed " 799 "(%d)\n", err); 800 goto exit_device_put; 801 } 802 803 err = platform_device_add(pdev); 804 if (err) { 805 printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", 806 err); 807 goto exit_device_put; 808 } 809 810 return 0; 811 812 exit_device_put: 813 platform_device_put(pdev); 814 exit: 815 return err; 816 } 817 818 static int __init f71805f_find(int sioaddr, unsigned short *address) 819 { 820 int err = -ENODEV; 821 u16 devid; 822 823 superio_enter(sioaddr); 824 825 devid = superio_inw(sioaddr, SIO_REG_MANID); 826 if (devid != SIO_FINTEK_ID) 827 goto exit; 828 829 devid = superio_inw(sioaddr, SIO_REG_DEVID); 830 if (devid != SIO_F71805F_ID) { 831 printk(KERN_INFO DRVNAME ": Unsupported Fintek device, " 832 "skipping\n"); 833 goto exit; 834 } 835 836 superio_select(sioaddr, F71805F_LD_HWM); 837 if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) { 838 printk(KERN_WARNING DRVNAME ": Device not activated, " 839 "skipping\n"); 840 goto exit; 841 } 842 843 *address = superio_inw(sioaddr, SIO_REG_ADDR); 844 if (*address == 0) { 845 printk(KERN_WARNING DRVNAME ": Base address not set, " 846 "skipping\n"); 847 goto exit; 848 } 849 850 err = 0; 851 printk(KERN_INFO DRVNAME ": Found F71805F chip at %#x, revision %u\n", 852 *address, superio_inb(sioaddr, SIO_REG_DEVREV)); 853 854 exit: 855 superio_exit(sioaddr); 856 return err; 857 } 858 859 static int __init f71805f_init(void) 860 { 861 int err; 862 unsigned short address; 863 864 if (f71805f_find(0x2e, &address) 865 && f71805f_find(0x4e, &address)) 866 return -ENODEV; 867 868 err = platform_driver_register(&f71805f_driver); 869 if (err) 870 goto exit; 871 872 /* Sets global pdev as a side effect */ 873 err = f71805f_device_add(address); 874 if (err) 875 goto exit_driver; 876 877 return 0; 878 879 exit_driver: 880 platform_driver_unregister(&f71805f_driver); 881 exit: 882 return err; 883 } 884 885 static void __exit f71805f_exit(void) 886 { 887 platform_device_unregister(pdev); 888 platform_driver_unregister(&f71805f_driver); 889 } 890 891 MODULE_AUTHOR("Jean Delvare <khali@linux-fr>"); 892 MODULE_LICENSE("GPL"); 893 MODULE_DESCRIPTION("F71805F hardware monitoring driver"); 894 895 module_init(f71805f_init); 896 module_exit(f71805f_exit); 897