1/* 2 lm85.c - Part of lm_sensors, Linux kernel modules for hardware 3 monitoring 4 Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> 5 Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com> 6 Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de> 7 Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com> 8 Copyright (C) 2007--2009 Jean Delvare <khali@linux-fr.org> 9 10 Chip details at <http://www.national.com/ds/LM/LM85.pdf> 11 12 This program is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; either version 2 of the License, or 15 (at your option) any later version. 16 17 This program is distributed in the hope that it will be useful, 18 but WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 GNU General Public License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with this program; if not, write to the Free Software 24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25*/ 26 27#include <linux/module.h> 28#include <linux/init.h> 29#include <linux/slab.h> 30#include <linux/jiffies.h> 31#include <linux/i2c.h> 32#include <linux/hwmon.h> 33#include <linux/hwmon-vid.h> 34#include <linux/hwmon-sysfs.h> 35#include <linux/err.h> 36#include <linux/mutex.h> 37 38/* Addresses to scan */ 39static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 40 41enum chips { 42 any_chip, lm85b, lm85c, 43 adm1027, adt7463, adt7468, 44 emc6d100, emc6d102 45}; 46 47/* The LM85 registers */ 48 49#define LM85_REG_IN(nr) (0x20 + (nr)) 50#define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2) 51#define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2) 52 53#define LM85_REG_TEMP(nr) (0x25 + (nr)) 54#define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2) 55#define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2) 56 57/* Fan speeds are LSB, MSB (2 bytes) */ 58#define LM85_REG_FAN(nr) (0x28 + (nr) * 2) 59#define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2) 60 61#define LM85_REG_PWM(nr) (0x30 + (nr)) 62 63#define LM85_REG_COMPANY 0x3e 64#define LM85_REG_VERSTEP 0x3f 65 66#define ADT7468_REG_CFG5 0x7c 67#define ADT7468_OFF64 0x01 68#define IS_ADT7468_OFF64(data) \ 69 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64)) 70 71/* These are the recognized values for the above regs */ 72#define LM85_COMPANY_NATIONAL 0x01 73#define LM85_COMPANY_ANALOG_DEV 0x41 74#define LM85_COMPANY_SMSC 0x5c 75#define LM85_VERSTEP_VMASK 0xf0 76#define LM85_VERSTEP_GENERIC 0x60 77#define LM85_VERSTEP_GENERIC2 0x70 78#define LM85_VERSTEP_LM85C 0x60 79#define LM85_VERSTEP_LM85B 0x62 80#define LM85_VERSTEP_LM96000_1 0x68 81#define LM85_VERSTEP_LM96000_2 0x69 82#define LM85_VERSTEP_ADM1027 0x60 83#define LM85_VERSTEP_ADT7463 0x62 84#define LM85_VERSTEP_ADT7463C 0x6A 85#define LM85_VERSTEP_ADT7468_1 0x71 86#define LM85_VERSTEP_ADT7468_2 0x72 87#define LM85_VERSTEP_EMC6D100_A0 0x60 88#define LM85_VERSTEP_EMC6D100_A1 0x61 89#define LM85_VERSTEP_EMC6D102 0x65 90 91#define LM85_REG_CONFIG 0x40 92 93#define LM85_REG_ALARM1 0x41 94#define LM85_REG_ALARM2 0x42 95 96#define LM85_REG_VID 0x43 97 98/* Automated FAN control */ 99#define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr)) 100#define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr)) 101#define LM85_REG_AFAN_SPIKE1 0x62 102#define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr)) 103#define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr)) 104#define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr)) 105#define LM85_REG_AFAN_HYST1 0x6d 106#define LM85_REG_AFAN_HYST2 0x6e 107 108#define ADM1027_REG_EXTEND_ADC1 0x76 109#define ADM1027_REG_EXTEND_ADC2 0x77 110 111#define EMC6D100_REG_ALARM3 0x7d 112/* IN5, IN6 and IN7 */ 113#define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5)) 114#define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2) 115#define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2) 116#define EMC6D102_REG_EXTEND_ADC1 0x85 117#define EMC6D102_REG_EXTEND_ADC2 0x86 118#define EMC6D102_REG_EXTEND_ADC3 0x87 119#define EMC6D102_REG_EXTEND_ADC4 0x88 120 121 122/* Conversions. Rounding and limit checking is only done on the TO_REG 123 variants. Note that you should be a bit careful with which arguments 124 these macros are called: arguments may be evaluated more than once. 125 */ 126 127/* IN are scaled acording to built-in resistors */ 128static const int lm85_scaling[] = { /* .001 Volts */ 129 2500, 2250, 3300, 5000, 12000, 130 3300, 1500, 1800 /*EMC6D100*/ 131}; 132#define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from)) 133 134#define INS_TO_REG(n, val) \ 135 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255) 136 137#define INSEXT_FROM_REG(n, val, ext) \ 138 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n]) 139 140#define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n]) 141 142/* FAN speed is measured using 90kHz clock */ 143static inline u16 FAN_TO_REG(unsigned long val) 144{ 145 if (!val) 146 return 0xffff; 147 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe); 148} 149#define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \ 150 5400000 / (val)) 151 152/* Temperature is reported in .001 degC increments */ 153#define TEMP_TO_REG(val) \ 154 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127) 155#define TEMPEXT_FROM_REG(val, ext) \ 156 SCALE(((val) << 4) + (ext), 16, 1000) 157#define TEMP_FROM_REG(val) ((val) * 1000) 158 159#define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255) 160#define PWM_FROM_REG(val) (val) 161 162 163/* ZONEs have the following parameters: 164 * Limit (low) temp, 1. degC 165 * Hysteresis (below limit), 1. degC (0-15) 166 * Range of speed control, .1 degC (2-80) 167 * Critical (high) temp, 1. degC 168 * 169 * FAN PWMs have the following parameters: 170 * Reference Zone, 1, 2, 3, etc. 171 * Spinup time, .05 sec 172 * PWM value at limit/low temp, 1 count 173 * PWM Frequency, 1. Hz 174 * PWM is Min or OFF below limit, flag 175 * Invert PWM output, flag 176 * 177 * Some chips filter the temp, others the fan. 178 * Filter constant (or disabled) .1 seconds 179 */ 180 181/* These are the zone temperature range encodings in .001 degree C */ 182static const int lm85_range_map[] = { 183 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000, 184 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000 185}; 186 187static int RANGE_TO_REG(int range) 188{ 189 int i; 190 191 /* Find the closest match */ 192 for (i = 0; i < 15; ++i) { 193 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2) 194 break; 195 } 196 197 return i; 198} 199#define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f] 200 201/* These are the PWM frequency encodings */ 202static const int lm85_freq_map[8] = { /* 1 Hz */ 203 10, 15, 23, 30, 38, 47, 61, 94 204}; 205static const int adm1027_freq_map[8] = { /* 1 Hz */ 206 11, 15, 22, 29, 35, 44, 59, 88 207}; 208 209static int FREQ_TO_REG(const int *map, int freq) 210{ 211 int i; 212 213 /* Find the closest match */ 214 for (i = 0; i < 7; ++i) 215 if (freq <= (map[i] + map[i + 1]) / 2) 216 break; 217 return i; 218} 219 220static int FREQ_FROM_REG(const int *map, u8 reg) 221{ 222 return map[reg & 0x07]; 223} 224 225/* Since we can't use strings, I'm abusing these numbers 226 * to stand in for the following meanings: 227 * 1 -- PWM responds to Zone 1 228 * 2 -- PWM responds to Zone 2 229 * 3 -- PWM responds to Zone 3 230 * 23 -- PWM responds to the higher temp of Zone 2 or 3 231 * 123 -- PWM responds to highest of Zone 1, 2, or 3 232 * 0 -- PWM is always at 0% (ie, off) 233 * -1 -- PWM is always at 100% 234 * -2 -- PWM responds to manual control 235 */ 236 237static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 }; 238#define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5] 239 240static int ZONE_TO_REG(int zone) 241{ 242 int i; 243 244 for (i = 0; i <= 7; ++i) 245 if (zone == lm85_zone_map[i]) 246 break; 247 if (i > 7) /* Not found. */ 248 i = 3; /* Always 100% */ 249 return i << 5; 250} 251 252#define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15) 253#define HYST_FROM_REG(val) ((val) * 1000) 254 255/* Chip sampling rates 256 * 257 * Some sensors are not updated more frequently than once per second 258 * so it doesn't make sense to read them more often than that. 259 * We cache the results and return the saved data if the driver 260 * is called again before a second has elapsed. 261 * 262 * Also, there is significant configuration data for this chip 263 * given the automatic PWM fan control that is possible. There 264 * are about 47 bytes of config data to only 22 bytes of actual 265 * readings. So, we keep the config data up to date in the cache 266 * when it is written and only sample it once every 1 *minute* 267 */ 268#define LM85_DATA_INTERVAL (HZ + HZ / 2) 269#define LM85_CONFIG_INTERVAL (1 * 60 * HZ) 270 271/* LM85 can automatically adjust fan speeds based on temperature 272 * This structure encapsulates an entire Zone config. There are 273 * three zones (one for each temperature input) on the lm85 274 */ 275struct lm85_zone { 276 s8 limit; /* Low temp limit */ 277 u8 hyst; /* Low limit hysteresis. (0-15) */ 278 u8 range; /* Temp range, encoded */ 279 s8 critical; /* "All fans ON" temp limit */ 280 u8 off_desired; /* Actual "off" temperature specified. Preserved 281 * to prevent "drift" as other autofan control 282 * values change. 283 */ 284 u8 max_desired; /* Actual "max" temperature specified. Preserved 285 * to prevent "drift" as other autofan control 286 * values change. 287 */ 288}; 289 290struct lm85_autofan { 291 u8 config; /* Register value */ 292 u8 min_pwm; /* Minimum PWM value, encoded */ 293 u8 min_off; /* Min PWM or OFF below "limit", flag */ 294}; 295 296/* For each registered chip, we need to keep some data in memory. 297 The structure is dynamically allocated. */ 298struct lm85_data { 299 struct device *hwmon_dev; 300 const int *freq_map; 301 enum chips type; 302 303 struct mutex update_lock; 304 int valid; /* !=0 if following fields are valid */ 305 unsigned long last_reading; /* In jiffies */ 306 unsigned long last_config; /* In jiffies */ 307 308 u8 in[8]; /* Register value */ 309 u8 in_max[8]; /* Register value */ 310 u8 in_min[8]; /* Register value */ 311 s8 temp[3]; /* Register value */ 312 s8 temp_min[3]; /* Register value */ 313 s8 temp_max[3]; /* Register value */ 314 u16 fan[4]; /* Register value */ 315 u16 fan_min[4]; /* Register value */ 316 u8 pwm[3]; /* Register value */ 317 u8 pwm_freq[3]; /* Register encoding */ 318 u8 temp_ext[3]; /* Decoded values */ 319 u8 in_ext[8]; /* Decoded values */ 320 u8 vid; /* Register value */ 321 u8 vrm; /* VRM version */ 322 u32 alarms; /* Register encoding, combined */ 323 u8 cfg5; /* Config Register 5 on ADT7468 */ 324 struct lm85_autofan autofan[3]; 325 struct lm85_zone zone[3]; 326}; 327 328static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info); 329static int lm85_probe(struct i2c_client *client, 330 const struct i2c_device_id *id); 331static int lm85_remove(struct i2c_client *client); 332 333static int lm85_read_value(struct i2c_client *client, u8 reg); 334static void lm85_write_value(struct i2c_client *client, u8 reg, int value); 335static struct lm85_data *lm85_update_device(struct device *dev); 336 337 338static const struct i2c_device_id lm85_id[] = { 339 { "adm1027", adm1027 }, 340 { "adt7463", adt7463 }, 341 { "adt7468", adt7468 }, 342 { "lm85", any_chip }, 343 { "lm85b", lm85b }, 344 { "lm85c", lm85c }, 345 { "emc6d100", emc6d100 }, 346 { "emc6d101", emc6d100 }, 347 { "emc6d102", emc6d102 }, 348 { } 349}; 350MODULE_DEVICE_TABLE(i2c, lm85_id); 351 352static struct i2c_driver lm85_driver = { 353 .class = I2C_CLASS_HWMON, 354 .driver = { 355 .name = "lm85", 356 }, 357 .probe = lm85_probe, 358 .remove = lm85_remove, 359 .id_table = lm85_id, 360 .detect = lm85_detect, 361 .address_list = normal_i2c, 362}; 363 364 365/* 4 Fans */ 366static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 367 char *buf) 368{ 369 int nr = to_sensor_dev_attr(attr)->index; 370 struct lm85_data *data = lm85_update_device(dev); 371 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr])); 372} 373 374static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, 375 char *buf) 376{ 377 int nr = to_sensor_dev_attr(attr)->index; 378 struct lm85_data *data = lm85_update_device(dev); 379 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr])); 380} 381 382static ssize_t set_fan_min(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 lm85_data *data = i2c_get_clientdata(client); 388 unsigned long val = simple_strtoul(buf, NULL, 10); 389 390 mutex_lock(&data->update_lock); 391 data->fan_min[nr] = FAN_TO_REG(val); 392 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 393 mutex_unlock(&data->update_lock); 394 return count; 395} 396 397#define show_fan_offset(offset) \ 398static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 399 show_fan, NULL, offset - 1); \ 400static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 401 show_fan_min, set_fan_min, offset - 1) 402 403show_fan_offset(1); 404show_fan_offset(2); 405show_fan_offset(3); 406show_fan_offset(4); 407 408/* vid, vrm, alarms */ 409 410static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, 411 char *buf) 412{ 413 struct lm85_data *data = lm85_update_device(dev); 414 int vid; 415 416 if ((data->type == adt7463 || data->type == adt7468) && 417 (data->vid & 0x80)) { 418 /* 6-pin VID (VRM 10) */ 419 vid = vid_from_reg(data->vid & 0x3f, data->vrm); 420 } else { 421 /* 5-pin VID (VRM 9) */ 422 vid = vid_from_reg(data->vid & 0x1f, data->vrm); 423 } 424 425 return sprintf(buf, "%d\n", vid); 426} 427 428static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 429 430static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, 431 char *buf) 432{ 433 struct lm85_data *data = dev_get_drvdata(dev); 434 return sprintf(buf, "%ld\n", (long) data->vrm); 435} 436 437static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, 438 const char *buf, size_t count) 439{ 440 struct lm85_data *data = dev_get_drvdata(dev); 441 data->vrm = simple_strtoul(buf, NULL, 10); 442 return count; 443} 444 445static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 446 447static ssize_t show_alarms_reg(struct device *dev, struct device_attribute 448 *attr, char *buf) 449{ 450 struct lm85_data *data = lm85_update_device(dev); 451 return sprintf(buf, "%u\n", data->alarms); 452} 453 454static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 455 456static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 457 char *buf) 458{ 459 int nr = to_sensor_dev_attr(attr)->index; 460 struct lm85_data *data = lm85_update_device(dev); 461 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); 462} 463 464static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 465static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 466static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 467static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 468static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 469static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18); 470static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16); 471static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17); 472static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 473static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14); 474static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 475static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6); 476static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 477static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10); 478static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11); 479static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12); 480static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13); 481 482/* pwm */ 483 484static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 485 char *buf) 486{ 487 int nr = to_sensor_dev_attr(attr)->index; 488 struct lm85_data *data = lm85_update_device(dev); 489 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr])); 490} 491 492static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 493 const char *buf, size_t count) 494{ 495 int nr = to_sensor_dev_attr(attr)->index; 496 struct i2c_client *client = to_i2c_client(dev); 497 struct lm85_data *data = i2c_get_clientdata(client); 498 long val = simple_strtol(buf, NULL, 10); 499 500 mutex_lock(&data->update_lock); 501 data->pwm[nr] = PWM_TO_REG(val); 502 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 503 mutex_unlock(&data->update_lock); 504 return count; 505} 506 507static ssize_t show_pwm_enable(struct device *dev, struct device_attribute 508 *attr, char *buf) 509{ 510 int nr = to_sensor_dev_attr(attr)->index; 511 struct lm85_data *data = lm85_update_device(dev); 512 int pwm_zone, enable; 513 514 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 515 switch (pwm_zone) { 516 case -1: /* PWM is always at 100% */ 517 enable = 0; 518 break; 519 case 0: /* PWM is always at 0% */ 520 case -2: /* PWM responds to manual control */ 521 enable = 1; 522 break; 523 default: /* PWM in automatic mode */ 524 enable = 2; 525 } 526 return sprintf(buf, "%d\n", enable); 527} 528 529static ssize_t set_pwm_enable(struct device *dev, struct device_attribute 530 *attr, const char *buf, size_t count) 531{ 532 int nr = to_sensor_dev_attr(attr)->index; 533 struct i2c_client *client = to_i2c_client(dev); 534 struct lm85_data *data = i2c_get_clientdata(client); 535 long val = simple_strtol(buf, NULL, 10); 536 u8 config; 537 538 switch (val) { 539 case 0: 540 config = 3; 541 break; 542 case 1: 543 config = 7; 544 break; 545 case 2: 546 /* Here we have to choose arbitrarily one of the 5 possible 547 configurations; I go for the safest */ 548 config = 6; 549 break; 550 default: 551 return -EINVAL; 552 } 553 554 mutex_lock(&data->update_lock); 555 data->autofan[nr].config = lm85_read_value(client, 556 LM85_REG_AFAN_CONFIG(nr)); 557 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0) 558 | (config << 5); 559 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 560 data->autofan[nr].config); 561 mutex_unlock(&data->update_lock); 562 return count; 563} 564 565static ssize_t show_pwm_freq(struct device *dev, 566 struct device_attribute *attr, char *buf) 567{ 568 int nr = to_sensor_dev_attr(attr)->index; 569 struct lm85_data *data = lm85_update_device(dev); 570 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->freq_map, 571 data->pwm_freq[nr])); 572} 573 574static ssize_t set_pwm_freq(struct device *dev, 575 struct device_attribute *attr, const char *buf, size_t count) 576{ 577 int nr = to_sensor_dev_attr(attr)->index; 578 struct i2c_client *client = to_i2c_client(dev); 579 struct lm85_data *data = i2c_get_clientdata(client); 580 long val = simple_strtol(buf, NULL, 10); 581 582 mutex_lock(&data->update_lock); 583 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val); 584 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 585 (data->zone[nr].range << 4) 586 | data->pwm_freq[nr]); 587 mutex_unlock(&data->update_lock); 588 return count; 589} 590 591#define show_pwm_reg(offset) \ 592static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 593 show_pwm, set_pwm, offset - 1); \ 594static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ 595 show_pwm_enable, set_pwm_enable, offset - 1); \ 596static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \ 597 show_pwm_freq, set_pwm_freq, offset - 1) 598 599show_pwm_reg(1); 600show_pwm_reg(2); 601show_pwm_reg(3); 602 603/* Voltages */ 604 605static ssize_t show_in(struct device *dev, struct device_attribute *attr, 606 char *buf) 607{ 608 int nr = to_sensor_dev_attr(attr)->index; 609 struct lm85_data *data = lm85_update_device(dev); 610 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr], 611 data->in_ext[nr])); 612} 613 614static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 615 char *buf) 616{ 617 int nr = to_sensor_dev_attr(attr)->index; 618 struct lm85_data *data = lm85_update_device(dev); 619 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr])); 620} 621 622static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 623 const char *buf, size_t count) 624{ 625 int nr = to_sensor_dev_attr(attr)->index; 626 struct i2c_client *client = to_i2c_client(dev); 627 struct lm85_data *data = i2c_get_clientdata(client); 628 long val = simple_strtol(buf, NULL, 10); 629 630 mutex_lock(&data->update_lock); 631 data->in_min[nr] = INS_TO_REG(nr, val); 632 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 633 mutex_unlock(&data->update_lock); 634 return count; 635} 636 637static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 638 char *buf) 639{ 640 int nr = to_sensor_dev_attr(attr)->index; 641 struct lm85_data *data = lm85_update_device(dev); 642 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr])); 643} 644 645static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 646 const char *buf, size_t count) 647{ 648 int nr = to_sensor_dev_attr(attr)->index; 649 struct i2c_client *client = to_i2c_client(dev); 650 struct lm85_data *data = i2c_get_clientdata(client); 651 long val = simple_strtol(buf, NULL, 10); 652 653 mutex_lock(&data->update_lock); 654 data->in_max[nr] = INS_TO_REG(nr, val); 655 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 656 mutex_unlock(&data->update_lock); 657 return count; 658} 659 660#define show_in_reg(offset) \ 661static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 662 show_in, NULL, offset); \ 663static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 664 show_in_min, set_in_min, offset); \ 665static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 666 show_in_max, set_in_max, offset) 667 668show_in_reg(0); 669show_in_reg(1); 670show_in_reg(2); 671show_in_reg(3); 672show_in_reg(4); 673show_in_reg(5); 674show_in_reg(6); 675show_in_reg(7); 676 677/* Temps */ 678 679static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 680 char *buf) 681{ 682 int nr = to_sensor_dev_attr(attr)->index; 683 struct lm85_data *data = lm85_update_device(dev); 684 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr], 685 data->temp_ext[nr])); 686} 687 688static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, 689 char *buf) 690{ 691 int nr = to_sensor_dev_attr(attr)->index; 692 struct lm85_data *data = lm85_update_device(dev); 693 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); 694} 695 696static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, 697 const char *buf, size_t count) 698{ 699 int nr = to_sensor_dev_attr(attr)->index; 700 struct i2c_client *client = to_i2c_client(dev); 701 struct lm85_data *data = i2c_get_clientdata(client); 702 long val = simple_strtol(buf, NULL, 10); 703 704 if (IS_ADT7468_OFF64(data)) 705 val += 64; 706 707 mutex_lock(&data->update_lock); 708 data->temp_min[nr] = TEMP_TO_REG(val); 709 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 710 mutex_unlock(&data->update_lock); 711 return count; 712} 713 714static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 715 char *buf) 716{ 717 int nr = to_sensor_dev_attr(attr)->index; 718 struct lm85_data *data = lm85_update_device(dev); 719 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); 720} 721 722static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 723 const char *buf, size_t count) 724{ 725 int nr = to_sensor_dev_attr(attr)->index; 726 struct i2c_client *client = to_i2c_client(dev); 727 struct lm85_data *data = i2c_get_clientdata(client); 728 long val = simple_strtol(buf, NULL, 10); 729 730 if (IS_ADT7468_OFF64(data)) 731 val += 64; 732 733 mutex_lock(&data->update_lock); 734 data->temp_max[nr] = TEMP_TO_REG(val); 735 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 736 mutex_unlock(&data->update_lock); 737 return count; 738} 739 740#define show_temp_reg(offset) \ 741static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 742 show_temp, NULL, offset - 1); \ 743static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 744 show_temp_min, set_temp_min, offset - 1); \ 745static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 746 show_temp_max, set_temp_max, offset - 1); 747 748show_temp_reg(1); 749show_temp_reg(2); 750show_temp_reg(3); 751 752 753/* Automatic PWM control */ 754 755static ssize_t show_pwm_auto_channels(struct device *dev, 756 struct device_attribute *attr, char *buf) 757{ 758 int nr = to_sensor_dev_attr(attr)->index; 759 struct lm85_data *data = lm85_update_device(dev); 760 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 761} 762 763static ssize_t set_pwm_auto_channels(struct device *dev, 764 struct device_attribute *attr, const char *buf, size_t count) 765{ 766 int nr = to_sensor_dev_attr(attr)->index; 767 struct i2c_client *client = to_i2c_client(dev); 768 struct lm85_data *data = i2c_get_clientdata(client); 769 long val = simple_strtol(buf, NULL, 10); 770 771 mutex_lock(&data->update_lock); 772 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 773 | ZONE_TO_REG(val); 774 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 775 data->autofan[nr].config); 776 mutex_unlock(&data->update_lock); 777 return count; 778} 779 780static ssize_t show_pwm_auto_pwm_min(struct device *dev, 781 struct device_attribute *attr, char *buf) 782{ 783 int nr = to_sensor_dev_attr(attr)->index; 784 struct lm85_data *data = lm85_update_device(dev); 785 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 786} 787 788static ssize_t set_pwm_auto_pwm_min(struct device *dev, 789 struct device_attribute *attr, const char *buf, size_t count) 790{ 791 int nr = to_sensor_dev_attr(attr)->index; 792 struct i2c_client *client = to_i2c_client(dev); 793 struct lm85_data *data = i2c_get_clientdata(client); 794 long val = simple_strtol(buf, NULL, 10); 795 796 mutex_lock(&data->update_lock); 797 data->autofan[nr].min_pwm = PWM_TO_REG(val); 798 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 799 data->autofan[nr].min_pwm); 800 mutex_unlock(&data->update_lock); 801 return count; 802} 803 804static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, 805 struct device_attribute *attr, char *buf) 806{ 807 int nr = to_sensor_dev_attr(attr)->index; 808 struct lm85_data *data = lm85_update_device(dev); 809 return sprintf(buf, "%d\n", data->autofan[nr].min_off); 810} 811 812static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, 813 struct device_attribute *attr, const char *buf, size_t count) 814{ 815 int nr = to_sensor_dev_attr(attr)->index; 816 struct i2c_client *client = to_i2c_client(dev); 817 struct lm85_data *data = i2c_get_clientdata(client); 818 long val = simple_strtol(buf, NULL, 10); 819 u8 tmp; 820 821 mutex_lock(&data->update_lock); 822 data->autofan[nr].min_off = val; 823 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 824 tmp &= ~(0x20 << nr); 825 if (data->autofan[nr].min_off) 826 tmp |= 0x20 << nr; 827 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp); 828 mutex_unlock(&data->update_lock); 829 return count; 830} 831 832#define pwm_auto(offset) \ 833static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \ 834 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \ 835 set_pwm_auto_channels, offset - 1); \ 836static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \ 837 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \ 838 set_pwm_auto_pwm_min, offset - 1); \ 839static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \ 840 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \ 841 set_pwm_auto_pwm_minctl, offset - 1) 842 843pwm_auto(1); 844pwm_auto(2); 845pwm_auto(3); 846 847/* Temperature settings for automatic PWM control */ 848 849static ssize_t show_temp_auto_temp_off(struct device *dev, 850 struct device_attribute *attr, char *buf) 851{ 852 int nr = to_sensor_dev_attr(attr)->index; 853 struct lm85_data *data = lm85_update_device(dev); 854 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 855 HYST_FROM_REG(data->zone[nr].hyst)); 856} 857 858static ssize_t set_temp_auto_temp_off(struct device *dev, 859 struct device_attribute *attr, const char *buf, size_t count) 860{ 861 int nr = to_sensor_dev_attr(attr)->index; 862 struct i2c_client *client = to_i2c_client(dev); 863 struct lm85_data *data = i2c_get_clientdata(client); 864 int min; 865 long val = simple_strtol(buf, NULL, 10); 866 867 mutex_lock(&data->update_lock); 868 min = TEMP_FROM_REG(data->zone[nr].limit); 869 data->zone[nr].off_desired = TEMP_TO_REG(val); 870 data->zone[nr].hyst = HYST_TO_REG(min - val); 871 if (nr == 0 || nr == 1) { 872 lm85_write_value(client, LM85_REG_AFAN_HYST1, 873 (data->zone[0].hyst << 4) 874 | data->zone[1].hyst); 875 } else { 876 lm85_write_value(client, LM85_REG_AFAN_HYST2, 877 (data->zone[2].hyst << 4)); 878 } 879 mutex_unlock(&data->update_lock); 880 return count; 881} 882 883static ssize_t show_temp_auto_temp_min(struct device *dev, 884 struct device_attribute *attr, char *buf) 885{ 886 int nr = to_sensor_dev_attr(attr)->index; 887 struct lm85_data *data = lm85_update_device(dev); 888 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit)); 889} 890 891static ssize_t set_temp_auto_temp_min(struct device *dev, 892 struct device_attribute *attr, const char *buf, size_t count) 893{ 894 int nr = to_sensor_dev_attr(attr)->index; 895 struct i2c_client *client = to_i2c_client(dev); 896 struct lm85_data *data = i2c_get_clientdata(client); 897 long val = simple_strtol(buf, NULL, 10); 898 899 mutex_lock(&data->update_lock); 900 data->zone[nr].limit = TEMP_TO_REG(val); 901 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 902 data->zone[nr].limit); 903 904/* Update temp_auto_max and temp_auto_range */ 905 data->zone[nr].range = RANGE_TO_REG( 906 TEMP_FROM_REG(data->zone[nr].max_desired) - 907 TEMP_FROM_REG(data->zone[nr].limit)); 908 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 909 ((data->zone[nr].range & 0x0f) << 4) 910 | (data->pwm_freq[nr] & 0x07)); 911 912/* Update temp_auto_hyst and temp_auto_off */ 913 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 914 data->zone[nr].limit) - TEMP_FROM_REG( 915 data->zone[nr].off_desired)); 916 if (nr == 0 || nr == 1) { 917 lm85_write_value(client, LM85_REG_AFAN_HYST1, 918 (data->zone[0].hyst << 4) 919 | data->zone[1].hyst); 920 } else { 921 lm85_write_value(client, LM85_REG_AFAN_HYST2, 922 (data->zone[2].hyst << 4)); 923 } 924 mutex_unlock(&data->update_lock); 925 return count; 926} 927 928static ssize_t show_temp_auto_temp_max(struct device *dev, 929 struct device_attribute *attr, char *buf) 930{ 931 int nr = to_sensor_dev_attr(attr)->index; 932 struct lm85_data *data = lm85_update_device(dev); 933 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 934 RANGE_FROM_REG(data->zone[nr].range)); 935} 936 937static ssize_t set_temp_auto_temp_max(struct device *dev, 938 struct device_attribute *attr, const char *buf, size_t count) 939{ 940 int nr = to_sensor_dev_attr(attr)->index; 941 struct i2c_client *client = to_i2c_client(dev); 942 struct lm85_data *data = i2c_get_clientdata(client); 943 int min; 944 long val = simple_strtol(buf, NULL, 10); 945 946 mutex_lock(&data->update_lock); 947 min = TEMP_FROM_REG(data->zone[nr].limit); 948 data->zone[nr].max_desired = TEMP_TO_REG(val); 949 data->zone[nr].range = RANGE_TO_REG( 950 val - min); 951 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 952 ((data->zone[nr].range & 0x0f) << 4) 953 | (data->pwm_freq[nr] & 0x07)); 954 mutex_unlock(&data->update_lock); 955 return count; 956} 957 958static ssize_t show_temp_auto_temp_crit(struct device *dev, 959 struct device_attribute *attr, char *buf) 960{ 961 int nr = to_sensor_dev_attr(attr)->index; 962 struct lm85_data *data = lm85_update_device(dev); 963 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 964} 965 966static ssize_t set_temp_auto_temp_crit(struct device *dev, 967 struct device_attribute *attr, const char *buf, size_t count) 968{ 969 int nr = to_sensor_dev_attr(attr)->index; 970 struct i2c_client *client = to_i2c_client(dev); 971 struct lm85_data *data = i2c_get_clientdata(client); 972 long val = simple_strtol(buf, NULL, 10); 973 974 mutex_lock(&data->update_lock); 975 data->zone[nr].critical = TEMP_TO_REG(val); 976 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 977 data->zone[nr].critical); 978 mutex_unlock(&data->update_lock); 979 return count; 980} 981 982#define temp_auto(offset) \ 983static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \ 984 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \ 985 set_temp_auto_temp_off, offset - 1); \ 986static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \ 987 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \ 988 set_temp_auto_temp_min, offset - 1); \ 989static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \ 990 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \ 991 set_temp_auto_temp_max, offset - 1); \ 992static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \ 993 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \ 994 set_temp_auto_temp_crit, offset - 1); 995 996temp_auto(1); 997temp_auto(2); 998temp_auto(3); 999 1000static struct attribute *lm85_attributes[] = { 1001 &sensor_dev_attr_fan1_input.dev_attr.attr, 1002 &sensor_dev_attr_fan2_input.dev_attr.attr, 1003 &sensor_dev_attr_fan3_input.dev_attr.attr, 1004 &sensor_dev_attr_fan4_input.dev_attr.attr, 1005 &sensor_dev_attr_fan1_min.dev_attr.attr, 1006 &sensor_dev_attr_fan2_min.dev_attr.attr, 1007 &sensor_dev_attr_fan3_min.dev_attr.attr, 1008 &sensor_dev_attr_fan4_min.dev_attr.attr, 1009 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1010 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1011 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1012 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1013 1014 &sensor_dev_attr_pwm1.dev_attr.attr, 1015 &sensor_dev_attr_pwm2.dev_attr.attr, 1016 &sensor_dev_attr_pwm3.dev_attr.attr, 1017 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1018 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1019 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1020 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1021 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1022 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1023 1024 &sensor_dev_attr_in0_input.dev_attr.attr, 1025 &sensor_dev_attr_in1_input.dev_attr.attr, 1026 &sensor_dev_attr_in2_input.dev_attr.attr, 1027 &sensor_dev_attr_in3_input.dev_attr.attr, 1028 &sensor_dev_attr_in0_min.dev_attr.attr, 1029 &sensor_dev_attr_in1_min.dev_attr.attr, 1030 &sensor_dev_attr_in2_min.dev_attr.attr, 1031 &sensor_dev_attr_in3_min.dev_attr.attr, 1032 &sensor_dev_attr_in0_max.dev_attr.attr, 1033 &sensor_dev_attr_in1_max.dev_attr.attr, 1034 &sensor_dev_attr_in2_max.dev_attr.attr, 1035 &sensor_dev_attr_in3_max.dev_attr.attr, 1036 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1037 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1038 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1039 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1040 1041 &sensor_dev_attr_temp1_input.dev_attr.attr, 1042 &sensor_dev_attr_temp2_input.dev_attr.attr, 1043 &sensor_dev_attr_temp3_input.dev_attr.attr, 1044 &sensor_dev_attr_temp1_min.dev_attr.attr, 1045 &sensor_dev_attr_temp2_min.dev_attr.attr, 1046 &sensor_dev_attr_temp3_min.dev_attr.attr, 1047 &sensor_dev_attr_temp1_max.dev_attr.attr, 1048 &sensor_dev_attr_temp2_max.dev_attr.attr, 1049 &sensor_dev_attr_temp3_max.dev_attr.attr, 1050 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1051 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1052 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1053 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1054 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1055 1056 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr, 1057 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr, 1058 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr, 1059 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr, 1060 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr, 1061 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr, 1062 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr, 1063 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr, 1064 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr, 1065 1066 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr, 1067 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr, 1068 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr, 1069 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr, 1070 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr, 1071 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr, 1072 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr, 1073 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr, 1074 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr, 1075 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr, 1076 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr, 1077 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr, 1078 1079 &dev_attr_vrm.attr, 1080 &dev_attr_cpu0_vid.attr, 1081 &dev_attr_alarms.attr, 1082 NULL 1083}; 1084 1085static const struct attribute_group lm85_group = { 1086 .attrs = lm85_attributes, 1087}; 1088 1089static struct attribute *lm85_attributes_in4[] = { 1090 &sensor_dev_attr_in4_input.dev_attr.attr, 1091 &sensor_dev_attr_in4_min.dev_attr.attr, 1092 &sensor_dev_attr_in4_max.dev_attr.attr, 1093 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1094 NULL 1095}; 1096 1097static const struct attribute_group lm85_group_in4 = { 1098 .attrs = lm85_attributes_in4, 1099}; 1100 1101static struct attribute *lm85_attributes_in567[] = { 1102 &sensor_dev_attr_in5_input.dev_attr.attr, 1103 &sensor_dev_attr_in6_input.dev_attr.attr, 1104 &sensor_dev_attr_in7_input.dev_attr.attr, 1105 &sensor_dev_attr_in5_min.dev_attr.attr, 1106 &sensor_dev_attr_in6_min.dev_attr.attr, 1107 &sensor_dev_attr_in7_min.dev_attr.attr, 1108 &sensor_dev_attr_in5_max.dev_attr.attr, 1109 &sensor_dev_attr_in6_max.dev_attr.attr, 1110 &sensor_dev_attr_in7_max.dev_attr.attr, 1111 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1112 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1113 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1114 NULL 1115}; 1116 1117static const struct attribute_group lm85_group_in567 = { 1118 .attrs = lm85_attributes_in567, 1119}; 1120 1121static void lm85_init_client(struct i2c_client *client) 1122{ 1123 int value; 1124 1125 /* Start monitoring if needed */ 1126 value = lm85_read_value(client, LM85_REG_CONFIG); 1127 if (!(value & 0x01)) { 1128 dev_info(&client->dev, "Starting monitoring\n"); 1129 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01); 1130 } 1131 1132 /* Warn about unusual configuration bits */ 1133 if (value & 0x02) 1134 dev_warn(&client->dev, "Device configuration is locked\n"); 1135 if (!(value & 0x04)) 1136 dev_warn(&client->dev, "Device is not ready\n"); 1137} 1138 1139static int lm85_is_fake(struct i2c_client *client) 1140{ 1141 /* 1142 * Differenciate between real LM96000 and Winbond WPCD377I. The latter 1143 * emulate the former except that it has no hardware monitoring function 1144 * so the readings are always 0. 1145 */ 1146 int i; 1147 u8 in_temp, fan; 1148 1149 for (i = 0; i < 8; i++) { 1150 in_temp = i2c_smbus_read_byte_data(client, 0x20 + i); 1151 fan = i2c_smbus_read_byte_data(client, 0x28 + i); 1152 if (in_temp != 0x00 || fan != 0xff) 1153 return 0; 1154 } 1155 1156 return 1; 1157} 1158 1159/* Return 0 if detection is successful, -ENODEV otherwise */ 1160static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info) 1161{ 1162 struct i2c_adapter *adapter = client->adapter; 1163 int address = client->addr; 1164 const char *type_name; 1165 int company, verstep; 1166 1167 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { 1168 /* We need to be able to do byte I/O */ 1169 return -ENODEV; 1170 } 1171 1172 /* Determine the chip type */ 1173 company = lm85_read_value(client, LM85_REG_COMPANY); 1174 verstep = lm85_read_value(client, LM85_REG_VERSTEP); 1175 1176 dev_dbg(&adapter->dev, "Detecting device at 0x%02x with " 1177 "COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1178 address, company, verstep); 1179 1180 /* All supported chips have the version in common */ 1181 if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC && 1182 (verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC2) { 1183 dev_dbg(&adapter->dev, 1184 "Autodetection failed: unsupported version\n"); 1185 return -ENODEV; 1186 } 1187 type_name = "lm85"; 1188 1189 /* Now, refine the detection */ 1190 if (company == LM85_COMPANY_NATIONAL) { 1191 switch (verstep) { 1192 case LM85_VERSTEP_LM85C: 1193 type_name = "lm85c"; 1194 break; 1195 case LM85_VERSTEP_LM85B: 1196 type_name = "lm85b"; 1197 break; 1198 case LM85_VERSTEP_LM96000_1: 1199 case LM85_VERSTEP_LM96000_2: 1200 /* Check for Winbond WPCD377I */ 1201 if (lm85_is_fake(client)) { 1202 dev_dbg(&adapter->dev, 1203 "Found Winbond WPCD377I, ignoring\n"); 1204 return -ENODEV; 1205 } 1206 break; 1207 } 1208 } else if (company == LM85_COMPANY_ANALOG_DEV) { 1209 switch (verstep) { 1210 case LM85_VERSTEP_ADM1027: 1211 type_name = "adm1027"; 1212 break; 1213 case LM85_VERSTEP_ADT7463: 1214 case LM85_VERSTEP_ADT7463C: 1215 type_name = "adt7463"; 1216 break; 1217 case LM85_VERSTEP_ADT7468_1: 1218 case LM85_VERSTEP_ADT7468_2: 1219 type_name = "adt7468"; 1220 break; 1221 } 1222 } else if (company == LM85_COMPANY_SMSC) { 1223 switch (verstep) { 1224 case LM85_VERSTEP_EMC6D100_A0: 1225 case LM85_VERSTEP_EMC6D100_A1: 1226 /* Note: we can't tell a '100 from a '101 */ 1227 type_name = "emc6d100"; 1228 break; 1229 case LM85_VERSTEP_EMC6D102: 1230 type_name = "emc6d102"; 1231 break; 1232 } 1233 } else { 1234 dev_dbg(&adapter->dev, 1235 "Autodetection failed: unknown vendor\n"); 1236 return -ENODEV; 1237 } 1238 1239 strlcpy(info->type, type_name, I2C_NAME_SIZE); 1240 1241 return 0; 1242} 1243 1244static int lm85_probe(struct i2c_client *client, 1245 const struct i2c_device_id *id) 1246{ 1247 struct lm85_data *data; 1248 int err; 1249 1250 data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL); 1251 if (!data) 1252 return -ENOMEM; 1253 1254 i2c_set_clientdata(client, data); 1255 data->type = id->driver_data; 1256 mutex_init(&data->update_lock); 1257 1258 /* Fill in the chip specific driver values */ 1259 switch (data->type) { 1260 case adm1027: 1261 case adt7463: 1262 case adt7468: 1263 case emc6d100: 1264 case emc6d102: 1265 data->freq_map = adm1027_freq_map; 1266 break; 1267 default: 1268 data->freq_map = lm85_freq_map; 1269 } 1270 1271 /* Set the VRM version */ 1272 data->vrm = vid_which_vrm(); 1273 1274 /* Initialize the LM85 chip */ 1275 lm85_init_client(client); 1276 1277 /* Register sysfs hooks */ 1278 err = sysfs_create_group(&client->dev.kobj, &lm85_group); 1279 if (err) 1280 goto err_kfree; 1281 1282 /* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used 1283 as a sixth digital VID input rather than an analog input. */ 1284 data->vid = lm85_read_value(client, LM85_REG_VID); 1285 if (!((data->type == adt7463 || data->type == adt7468) && 1286 (data->vid & 0x80))) 1287 if ((err = sysfs_create_group(&client->dev.kobj, 1288 &lm85_group_in4))) 1289 goto err_remove_files; 1290 1291 /* The EMC6D100 has 3 additional voltage inputs */ 1292 if (data->type == emc6d100) 1293 if ((err = sysfs_create_group(&client->dev.kobj, 1294 &lm85_group_in567))) 1295 goto err_remove_files; 1296 1297 data->hwmon_dev = hwmon_device_register(&client->dev); 1298 if (IS_ERR(data->hwmon_dev)) { 1299 err = PTR_ERR(data->hwmon_dev); 1300 goto err_remove_files; 1301 } 1302 1303 return 0; 1304 1305 /* Error out and cleanup code */ 1306 err_remove_files: 1307 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1308 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); 1309 if (data->type == emc6d100) 1310 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); 1311 err_kfree: 1312 kfree(data); 1313 return err; 1314} 1315 1316static int lm85_remove(struct i2c_client *client) 1317{ 1318 struct lm85_data *data = i2c_get_clientdata(client); 1319 hwmon_device_unregister(data->hwmon_dev); 1320 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1321 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); 1322 if (data->type == emc6d100) 1323 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); 1324 kfree(data); 1325 return 0; 1326} 1327 1328 1329static int lm85_read_value(struct i2c_client *client, u8 reg) 1330{ 1331 int res; 1332 1333 /* What size location is it? */ 1334 switch (reg) { 1335 case LM85_REG_FAN(0): /* Read WORD data */ 1336 case LM85_REG_FAN(1): 1337 case LM85_REG_FAN(2): 1338 case LM85_REG_FAN(3): 1339 case LM85_REG_FAN_MIN(0): 1340 case LM85_REG_FAN_MIN(1): 1341 case LM85_REG_FAN_MIN(2): 1342 case LM85_REG_FAN_MIN(3): 1343 case LM85_REG_ALARM1: /* Read both bytes at once */ 1344 res = i2c_smbus_read_byte_data(client, reg) & 0xff; 1345 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8; 1346 break; 1347 default: /* Read BYTE data */ 1348 res = i2c_smbus_read_byte_data(client, reg); 1349 break; 1350 } 1351 1352 return res; 1353} 1354 1355static void lm85_write_value(struct i2c_client *client, u8 reg, int value) 1356{ 1357 switch (reg) { 1358 case LM85_REG_FAN(0): /* Write WORD data */ 1359 case LM85_REG_FAN(1): 1360 case LM85_REG_FAN(2): 1361 case LM85_REG_FAN(3): 1362 case LM85_REG_FAN_MIN(0): 1363 case LM85_REG_FAN_MIN(1): 1364 case LM85_REG_FAN_MIN(2): 1365 case LM85_REG_FAN_MIN(3): 1366 /* NOTE: ALARM is read only, so not included here */ 1367 i2c_smbus_write_byte_data(client, reg, value & 0xff); 1368 i2c_smbus_write_byte_data(client, reg + 1, value >> 8); 1369 break; 1370 default: /* Write BYTE data */ 1371 i2c_smbus_write_byte_data(client, reg, value); 1372 break; 1373 } 1374} 1375 1376static struct lm85_data *lm85_update_device(struct device *dev) 1377{ 1378 struct i2c_client *client = to_i2c_client(dev); 1379 struct lm85_data *data = i2c_get_clientdata(client); 1380 int i; 1381 1382 mutex_lock(&data->update_lock); 1383 1384 if (!data->valid || 1385 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) { 1386 /* Things that change quickly */ 1387 dev_dbg(&client->dev, "Reading sensor values\n"); 1388 1389 /* Have to read extended bits first to "freeze" the 1390 * more significant bits that are read later. 1391 * There are 2 additional resolution bits per channel and we 1392 * have room for 4, so we shift them to the left. 1393 */ 1394 if (data->type == adm1027 || data->type == adt7463 || 1395 data->type == adt7468) { 1396 int ext1 = lm85_read_value(client, 1397 ADM1027_REG_EXTEND_ADC1); 1398 int ext2 = lm85_read_value(client, 1399 ADM1027_REG_EXTEND_ADC2); 1400 int val = (ext1 << 8) + ext2; 1401 1402 for (i = 0; i <= 4; i++) 1403 data->in_ext[i] = 1404 ((val >> (i * 2)) & 0x03) << 2; 1405 1406 for (i = 0; i <= 2; i++) 1407 data->temp_ext[i] = 1408 (val >> ((i + 4) * 2)) & 0x0c; 1409 } 1410 1411 data->vid = lm85_read_value(client, LM85_REG_VID); 1412 1413 for (i = 0; i <= 3; ++i) { 1414 data->in[i] = 1415 lm85_read_value(client, LM85_REG_IN(i)); 1416 data->fan[i] = 1417 lm85_read_value(client, LM85_REG_FAN(i)); 1418 } 1419 1420 if (!((data->type == adt7463 || data->type == adt7468) && 1421 (data->vid & 0x80))) { 1422 data->in[4] = lm85_read_value(client, 1423 LM85_REG_IN(4)); 1424 } 1425 1426 if (data->type == adt7468) 1427 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5); 1428 1429 for (i = 0; i <= 2; ++i) { 1430 data->temp[i] = 1431 lm85_read_value(client, LM85_REG_TEMP(i)); 1432 data->pwm[i] = 1433 lm85_read_value(client, LM85_REG_PWM(i)); 1434 1435 if (IS_ADT7468_OFF64(data)) 1436 data->temp[i] -= 64; 1437 } 1438 1439 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1440 1441 if (data->type == emc6d100) { 1442 /* Three more voltage sensors */ 1443 for (i = 5; i <= 7; ++i) { 1444 data->in[i] = lm85_read_value(client, 1445 EMC6D100_REG_IN(i)); 1446 } 1447 /* More alarm bits */ 1448 data->alarms |= lm85_read_value(client, 1449 EMC6D100_REG_ALARM3) << 16; 1450 } else if (data->type == emc6d102) { 1451 /* Have to read LSB bits after the MSB ones because 1452 the reading of the MSB bits has frozen the 1453 LSBs (backward from the ADM1027). 1454 */ 1455 int ext1 = lm85_read_value(client, 1456 EMC6D102_REG_EXTEND_ADC1); 1457 int ext2 = lm85_read_value(client, 1458 EMC6D102_REG_EXTEND_ADC2); 1459 int ext3 = lm85_read_value(client, 1460 EMC6D102_REG_EXTEND_ADC3); 1461 int ext4 = lm85_read_value(client, 1462 EMC6D102_REG_EXTEND_ADC4); 1463 data->in_ext[0] = ext3 & 0x0f; 1464 data->in_ext[1] = ext4 & 0x0f; 1465 data->in_ext[2] = ext4 >> 4; 1466 data->in_ext[3] = ext3 >> 4; 1467 data->in_ext[4] = ext2 >> 4; 1468 1469 data->temp_ext[0] = ext1 & 0x0f; 1470 data->temp_ext[1] = ext2 & 0x0f; 1471 data->temp_ext[2] = ext1 >> 4; 1472 } 1473 1474 data->last_reading = jiffies; 1475 } /* last_reading */ 1476 1477 if (!data->valid || 1478 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) { 1479 /* Things that don't change often */ 1480 dev_dbg(&client->dev, "Reading config values\n"); 1481 1482 for (i = 0; i <= 3; ++i) { 1483 data->in_min[i] = 1484 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1485 data->in_max[i] = 1486 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1487 data->fan_min[i] = 1488 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1489 } 1490 1491 if (!((data->type == adt7463 || data->type == adt7468) && 1492 (data->vid & 0x80))) { 1493 data->in_min[4] = lm85_read_value(client, 1494 LM85_REG_IN_MIN(4)); 1495 data->in_max[4] = lm85_read_value(client, 1496 LM85_REG_IN_MAX(4)); 1497 } 1498 1499 if (data->type == emc6d100) { 1500 for (i = 5; i <= 7; ++i) { 1501 data->in_min[i] = lm85_read_value(client, 1502 EMC6D100_REG_IN_MIN(i)); 1503 data->in_max[i] = lm85_read_value(client, 1504 EMC6D100_REG_IN_MAX(i)); 1505 } 1506 } 1507 1508 for (i = 0; i <= 2; ++i) { 1509 int val; 1510 1511 data->temp_min[i] = 1512 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1513 data->temp_max[i] = 1514 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1515 1516 data->autofan[i].config = 1517 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1518 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1519 data->pwm_freq[i] = val & 0x07; 1520 data->zone[i].range = val >> 4; 1521 data->autofan[i].min_pwm = 1522 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1523 data->zone[i].limit = 1524 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1525 data->zone[i].critical = 1526 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1527 1528 if (IS_ADT7468_OFF64(data)) { 1529 data->temp_min[i] -= 64; 1530 data->temp_max[i] -= 64; 1531 data->zone[i].limit -= 64; 1532 data->zone[i].critical -= 64; 1533 } 1534 } 1535 1536 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1537 data->autofan[0].min_off = (i & 0x20) != 0; 1538 data->autofan[1].min_off = (i & 0x40) != 0; 1539 data->autofan[2].min_off = (i & 0x80) != 0; 1540 1541 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1542 data->zone[0].hyst = i >> 4; 1543 data->zone[1].hyst = i & 0x0f; 1544 1545 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1546 data->zone[2].hyst = i >> 4; 1547 1548 data->last_config = jiffies; 1549 } /* last_config */ 1550 1551 data->valid = 1; 1552 1553 mutex_unlock(&data->update_lock); 1554 1555 return data; 1556} 1557 1558 1559static int __init sm_lm85_init(void) 1560{ 1561 return i2c_add_driver(&lm85_driver); 1562} 1563 1564static void __exit sm_lm85_exit(void) 1565{ 1566 i2c_del_driver(&lm85_driver); 1567} 1568 1569MODULE_LICENSE("GPL"); 1570MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, " 1571 "Margit Schubert-While <margitsw@t-online.de>, " 1572 "Justin Thiessen <jthiessen@penguincomputing.com>"); 1573MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1574 1575module_init(sm_lm85_init); 1576module_exit(sm_lm85_exit); 1577