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, 2008 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 */ 39 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 40 41 /* Insmod parameters */ 42 I2C_CLIENT_INSMOD_7(lm85b, lm85c, adm1027, adt7463, adt7468, emc6d100, 43 emc6d102); 44 45 /* The LM85 registers */ 46 47 #define LM85_REG_IN(nr) (0x20 + (nr)) 48 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2) 49 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2) 50 51 #define LM85_REG_TEMP(nr) (0x25 + (nr)) 52 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2) 53 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2) 54 55 /* Fan speeds are LSB, MSB (2 bytes) */ 56 #define LM85_REG_FAN(nr) (0x28 + (nr) * 2) 57 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2) 58 59 #define LM85_REG_PWM(nr) (0x30 + (nr)) 60 61 #define LM85_REG_COMPANY 0x3e 62 #define LM85_REG_VERSTEP 0x3f 63 64 #define ADT7468_REG_CFG5 0x7c 65 #define ADT7468_OFF64 0x01 66 #define IS_ADT7468_OFF64(data) \ 67 ((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64)) 68 69 /* These are the recognized values for the above regs */ 70 #define LM85_COMPANY_NATIONAL 0x01 71 #define LM85_COMPANY_ANALOG_DEV 0x41 72 #define LM85_COMPANY_SMSC 0x5c 73 #define LM85_VERSTEP_VMASK 0xf0 74 #define LM85_VERSTEP_GENERIC 0x60 75 #define LM85_VERSTEP_GENERIC2 0x70 76 #define LM85_VERSTEP_LM85C 0x60 77 #define LM85_VERSTEP_LM85B 0x62 78 #define LM85_VERSTEP_ADM1027 0x60 79 #define LM85_VERSTEP_ADT7463 0x62 80 #define LM85_VERSTEP_ADT7463C 0x6A 81 #define LM85_VERSTEP_ADT7468_1 0x71 82 #define LM85_VERSTEP_ADT7468_2 0x72 83 #define LM85_VERSTEP_EMC6D100_A0 0x60 84 #define LM85_VERSTEP_EMC6D100_A1 0x61 85 #define LM85_VERSTEP_EMC6D102 0x65 86 87 #define LM85_REG_CONFIG 0x40 88 89 #define LM85_REG_ALARM1 0x41 90 #define LM85_REG_ALARM2 0x42 91 92 #define LM85_REG_VID 0x43 93 94 /* Automated FAN control */ 95 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr)) 96 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr)) 97 #define LM85_REG_AFAN_SPIKE1 0x62 98 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr)) 99 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr)) 100 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr)) 101 #define LM85_REG_AFAN_HYST1 0x6d 102 #define LM85_REG_AFAN_HYST2 0x6e 103 104 #define ADM1027_REG_EXTEND_ADC1 0x76 105 #define ADM1027_REG_EXTEND_ADC2 0x77 106 107 #define EMC6D100_REG_ALARM3 0x7d 108 /* IN5, IN6 and IN7 */ 109 #define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5)) 110 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2) 111 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2) 112 #define EMC6D102_REG_EXTEND_ADC1 0x85 113 #define EMC6D102_REG_EXTEND_ADC2 0x86 114 #define EMC6D102_REG_EXTEND_ADC3 0x87 115 #define EMC6D102_REG_EXTEND_ADC4 0x88 116 117 118 /* Conversions. Rounding and limit checking is only done on the TO_REG 119 variants. Note that you should be a bit careful with which arguments 120 these macros are called: arguments may be evaluated more than once. 121 */ 122 123 /* IN are scaled acording to built-in resistors */ 124 static const int lm85_scaling[] = { /* .001 Volts */ 125 2500, 2250, 3300, 5000, 12000, 126 3300, 1500, 1800 /*EMC6D100*/ 127 }; 128 #define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from)) 129 130 #define INS_TO_REG(n, val) \ 131 SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255) 132 133 #define INSEXT_FROM_REG(n, val, ext) \ 134 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n]) 135 136 #define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n]) 137 138 /* FAN speed is measured using 90kHz clock */ 139 static inline u16 FAN_TO_REG(unsigned long val) 140 { 141 if (!val) 142 return 0xffff; 143 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe); 144 } 145 #define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \ 146 5400000 / (val)) 147 148 /* Temperature is reported in .001 degC increments */ 149 #define TEMP_TO_REG(val) \ 150 SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127) 151 #define TEMPEXT_FROM_REG(val, ext) \ 152 SCALE(((val) << 4) + (ext), 16, 1000) 153 #define TEMP_FROM_REG(val) ((val) * 1000) 154 155 #define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255) 156 #define PWM_FROM_REG(val) (val) 157 158 159 /* ZONEs have the following parameters: 160 * Limit (low) temp, 1. degC 161 * Hysteresis (below limit), 1. degC (0-15) 162 * Range of speed control, .1 degC (2-80) 163 * Critical (high) temp, 1. degC 164 * 165 * FAN PWMs have the following parameters: 166 * Reference Zone, 1, 2, 3, etc. 167 * Spinup time, .05 sec 168 * PWM value at limit/low temp, 1 count 169 * PWM Frequency, 1. Hz 170 * PWM is Min or OFF below limit, flag 171 * Invert PWM output, flag 172 * 173 * Some chips filter the temp, others the fan. 174 * Filter constant (or disabled) .1 seconds 175 */ 176 177 /* These are the zone temperature range encodings in .001 degree C */ 178 static const int lm85_range_map[] = { 179 2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000, 180 13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000 181 }; 182 183 static int RANGE_TO_REG(int range) 184 { 185 int i; 186 187 /* Find the closest match */ 188 for (i = 0; i < 15; ++i) { 189 if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2) 190 break; 191 } 192 193 return i; 194 } 195 #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f] 196 197 /* These are the PWM frequency encodings */ 198 static const int lm85_freq_map[8] = { /* 1 Hz */ 199 10, 15, 23, 30, 38, 47, 61, 94 200 }; 201 static const int adm1027_freq_map[8] = { /* 1 Hz */ 202 11, 15, 22, 29, 35, 44, 59, 88 203 }; 204 205 static int FREQ_TO_REG(const int *map, int freq) 206 { 207 int i; 208 209 /* Find the closest match */ 210 for (i = 0; i < 7; ++i) 211 if (freq <= (map[i] + map[i + 1]) / 2) 212 break; 213 return i; 214 } 215 216 static int FREQ_FROM_REG(const int *map, u8 reg) 217 { 218 return map[reg & 0x07]; 219 } 220 221 /* Since we can't use strings, I'm abusing these numbers 222 * to stand in for the following meanings: 223 * 1 -- PWM responds to Zone 1 224 * 2 -- PWM responds to Zone 2 225 * 3 -- PWM responds to Zone 3 226 * 23 -- PWM responds to the higher temp of Zone 2 or 3 227 * 123 -- PWM responds to highest of Zone 1, 2, or 3 228 * 0 -- PWM is always at 0% (ie, off) 229 * -1 -- PWM is always at 100% 230 * -2 -- PWM responds to manual control 231 */ 232 233 static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 }; 234 #define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5] 235 236 static int ZONE_TO_REG(int zone) 237 { 238 int i; 239 240 for (i = 0; i <= 7; ++i) 241 if (zone == lm85_zone_map[i]) 242 break; 243 if (i > 7) /* Not found. */ 244 i = 3; /* Always 100% */ 245 return i << 5; 246 } 247 248 #define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15) 249 #define HYST_FROM_REG(val) ((val) * 1000) 250 251 /* Chip sampling rates 252 * 253 * Some sensors are not updated more frequently than once per second 254 * so it doesn't make sense to read them more often than that. 255 * We cache the results and return the saved data if the driver 256 * is called again before a second has elapsed. 257 * 258 * Also, there is significant configuration data for this chip 259 * given the automatic PWM fan control that is possible. There 260 * are about 47 bytes of config data to only 22 bytes of actual 261 * readings. So, we keep the config data up to date in the cache 262 * when it is written and only sample it once every 1 *minute* 263 */ 264 #define LM85_DATA_INTERVAL (HZ + HZ / 2) 265 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ) 266 267 /* LM85 can automatically adjust fan speeds based on temperature 268 * This structure encapsulates an entire Zone config. There are 269 * three zones (one for each temperature input) on the lm85 270 */ 271 struct lm85_zone { 272 s8 limit; /* Low temp limit */ 273 u8 hyst; /* Low limit hysteresis. (0-15) */ 274 u8 range; /* Temp range, encoded */ 275 s8 critical; /* "All fans ON" temp limit */ 276 u8 off_desired; /* Actual "off" temperature specified. Preserved 277 * to prevent "drift" as other autofan control 278 * values change. 279 */ 280 u8 max_desired; /* Actual "max" temperature specified. Preserved 281 * to prevent "drift" as other autofan control 282 * values change. 283 */ 284 }; 285 286 struct lm85_autofan { 287 u8 config; /* Register value */ 288 u8 min_pwm; /* Minimum PWM value, encoded */ 289 u8 min_off; /* Min PWM or OFF below "limit", flag */ 290 }; 291 292 /* For each registered chip, we need to keep some data in memory. 293 The structure is dynamically allocated. */ 294 struct lm85_data { 295 struct device *hwmon_dev; 296 const int *freq_map; 297 enum chips type; 298 299 struct mutex update_lock; 300 int valid; /* !=0 if following fields are valid */ 301 unsigned long last_reading; /* In jiffies */ 302 unsigned long last_config; /* In jiffies */ 303 304 u8 in[8]; /* Register value */ 305 u8 in_max[8]; /* Register value */ 306 u8 in_min[8]; /* Register value */ 307 s8 temp[3]; /* Register value */ 308 s8 temp_min[3]; /* Register value */ 309 s8 temp_max[3]; /* Register value */ 310 u16 fan[4]; /* Register value */ 311 u16 fan_min[4]; /* Register value */ 312 u8 pwm[3]; /* Register value */ 313 u8 pwm_freq[3]; /* Register encoding */ 314 u8 temp_ext[3]; /* Decoded values */ 315 u8 in_ext[8]; /* Decoded values */ 316 u8 vid; /* Register value */ 317 u8 vrm; /* VRM version */ 318 u32 alarms; /* Register encoding, combined */ 319 u8 cfg5; /* Config Register 5 on ADT7468 */ 320 struct lm85_autofan autofan[3]; 321 struct lm85_zone zone[3]; 322 }; 323 324 static int lm85_detect(struct i2c_client *client, int kind, 325 struct i2c_board_info *info); 326 static int lm85_probe(struct i2c_client *client, 327 const struct i2c_device_id *id); 328 static int lm85_remove(struct i2c_client *client); 329 330 static int lm85_read_value(struct i2c_client *client, u8 reg); 331 static void lm85_write_value(struct i2c_client *client, u8 reg, int value); 332 static struct lm85_data *lm85_update_device(struct device *dev); 333 334 335 static const struct i2c_device_id lm85_id[] = { 336 { "adm1027", adm1027 }, 337 { "adt7463", adt7463 }, 338 { "adt7468", adt7468 }, 339 { "lm85", any_chip }, 340 { "lm85b", lm85b }, 341 { "lm85c", lm85c }, 342 { "emc6d100", emc6d100 }, 343 { "emc6d101", emc6d100 }, 344 { "emc6d102", emc6d102 }, 345 { } 346 }; 347 MODULE_DEVICE_TABLE(i2c, lm85_id); 348 349 static struct i2c_driver lm85_driver = { 350 .class = I2C_CLASS_HWMON, 351 .driver = { 352 .name = "lm85", 353 }, 354 .probe = lm85_probe, 355 .remove = lm85_remove, 356 .id_table = lm85_id, 357 .detect = lm85_detect, 358 .address_data = &addr_data, 359 }; 360 361 362 /* 4 Fans */ 363 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 364 char *buf) 365 { 366 int nr = to_sensor_dev_attr(attr)->index; 367 struct lm85_data *data = lm85_update_device(dev); 368 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr])); 369 } 370 371 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, 372 char *buf) 373 { 374 int nr = to_sensor_dev_attr(attr)->index; 375 struct lm85_data *data = lm85_update_device(dev); 376 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr])); 377 } 378 379 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 380 const char *buf, size_t count) 381 { 382 int nr = to_sensor_dev_attr(attr)->index; 383 struct i2c_client *client = to_i2c_client(dev); 384 struct lm85_data *data = i2c_get_clientdata(client); 385 unsigned long val = simple_strtoul(buf, NULL, 10); 386 387 mutex_lock(&data->update_lock); 388 data->fan_min[nr] = FAN_TO_REG(val); 389 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 390 mutex_unlock(&data->update_lock); 391 return count; 392 } 393 394 #define show_fan_offset(offset) \ 395 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 396 show_fan, NULL, offset - 1); \ 397 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 398 show_fan_min, set_fan_min, offset - 1) 399 400 show_fan_offset(1); 401 show_fan_offset(2); 402 show_fan_offset(3); 403 show_fan_offset(4); 404 405 /* vid, vrm, alarms */ 406 407 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, 408 char *buf) 409 { 410 struct lm85_data *data = lm85_update_device(dev); 411 int vid; 412 413 if ((data->type == adt7463 || data->type == adt7468) && 414 (data->vid & 0x80)) { 415 /* 6-pin VID (VRM 10) */ 416 vid = vid_from_reg(data->vid & 0x3f, data->vrm); 417 } else { 418 /* 5-pin VID (VRM 9) */ 419 vid = vid_from_reg(data->vid & 0x1f, data->vrm); 420 } 421 422 return sprintf(buf, "%d\n", vid); 423 } 424 425 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 426 427 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, 428 char *buf) 429 { 430 struct lm85_data *data = dev_get_drvdata(dev); 431 return sprintf(buf, "%ld\n", (long) data->vrm); 432 } 433 434 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, 435 const char *buf, size_t count) 436 { 437 struct lm85_data *data = dev_get_drvdata(dev); 438 data->vrm = simple_strtoul(buf, NULL, 10); 439 return count; 440 } 441 442 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 443 444 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute 445 *attr, char *buf) 446 { 447 struct lm85_data *data = lm85_update_device(dev); 448 return sprintf(buf, "%u\n", data->alarms); 449 } 450 451 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 452 453 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 454 char *buf) 455 { 456 int nr = to_sensor_dev_attr(attr)->index; 457 struct lm85_data *data = lm85_update_device(dev); 458 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); 459 } 460 461 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 462 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 463 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 464 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 465 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 466 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18); 467 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16); 468 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17); 469 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 470 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14); 471 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 472 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6); 473 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 474 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10); 475 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11); 476 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12); 477 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13); 478 479 /* pwm */ 480 481 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 482 char *buf) 483 { 484 int nr = to_sensor_dev_attr(attr)->index; 485 struct lm85_data *data = lm85_update_device(dev); 486 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr])); 487 } 488 489 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 490 const char *buf, size_t count) 491 { 492 int nr = to_sensor_dev_attr(attr)->index; 493 struct i2c_client *client = to_i2c_client(dev); 494 struct lm85_data *data = i2c_get_clientdata(client); 495 long val = simple_strtol(buf, NULL, 10); 496 497 mutex_lock(&data->update_lock); 498 data->pwm[nr] = PWM_TO_REG(val); 499 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 500 mutex_unlock(&data->update_lock); 501 return count; 502 } 503 504 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute 505 *attr, char *buf) 506 { 507 int nr = to_sensor_dev_attr(attr)->index; 508 struct lm85_data *data = lm85_update_device(dev); 509 int pwm_zone, enable; 510 511 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 512 switch (pwm_zone) { 513 case -1: /* PWM is always at 100% */ 514 enable = 0; 515 break; 516 case 0: /* PWM is always at 0% */ 517 case -2: /* PWM responds to manual control */ 518 enable = 1; 519 break; 520 default: /* PWM in automatic mode */ 521 enable = 2; 522 } 523 return sprintf(buf, "%d\n", enable); 524 } 525 526 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute 527 *attr, const char *buf, size_t count) 528 { 529 int nr = to_sensor_dev_attr(attr)->index; 530 struct i2c_client *client = to_i2c_client(dev); 531 struct lm85_data *data = i2c_get_clientdata(client); 532 long val = simple_strtol(buf, NULL, 10); 533 u8 config; 534 535 switch (val) { 536 case 0: 537 config = 3; 538 break; 539 case 1: 540 config = 7; 541 break; 542 case 2: 543 /* Here we have to choose arbitrarily one of the 5 possible 544 configurations; I go for the safest */ 545 config = 6; 546 break; 547 default: 548 return -EINVAL; 549 } 550 551 mutex_lock(&data->update_lock); 552 data->autofan[nr].config = lm85_read_value(client, 553 LM85_REG_AFAN_CONFIG(nr)); 554 data->autofan[nr].config = (data->autofan[nr].config & ~0xe0) 555 | (config << 5); 556 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 557 data->autofan[nr].config); 558 mutex_unlock(&data->update_lock); 559 return count; 560 } 561 562 static ssize_t show_pwm_freq(struct device *dev, 563 struct device_attribute *attr, char *buf) 564 { 565 int nr = to_sensor_dev_attr(attr)->index; 566 struct lm85_data *data = lm85_update_device(dev); 567 return sprintf(buf, "%d\n", FREQ_FROM_REG(data->freq_map, 568 data->pwm_freq[nr])); 569 } 570 571 static ssize_t set_pwm_freq(struct device *dev, 572 struct device_attribute *attr, const char *buf, size_t count) 573 { 574 int nr = to_sensor_dev_attr(attr)->index; 575 struct i2c_client *client = to_i2c_client(dev); 576 struct lm85_data *data = i2c_get_clientdata(client); 577 long val = simple_strtol(buf, NULL, 10); 578 579 mutex_lock(&data->update_lock); 580 data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val); 581 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 582 (data->zone[nr].range << 4) 583 | data->pwm_freq[nr]); 584 mutex_unlock(&data->update_lock); 585 return count; 586 } 587 588 #define show_pwm_reg(offset) \ 589 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 590 show_pwm, set_pwm, offset - 1); \ 591 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ 592 show_pwm_enable, set_pwm_enable, offset - 1); \ 593 static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \ 594 show_pwm_freq, set_pwm_freq, offset - 1) 595 596 show_pwm_reg(1); 597 show_pwm_reg(2); 598 show_pwm_reg(3); 599 600 /* Voltages */ 601 602 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 603 char *buf) 604 { 605 int nr = to_sensor_dev_attr(attr)->index; 606 struct lm85_data *data = lm85_update_device(dev); 607 return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr], 608 data->in_ext[nr])); 609 } 610 611 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 612 char *buf) 613 { 614 int nr = to_sensor_dev_attr(attr)->index; 615 struct lm85_data *data = lm85_update_device(dev); 616 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr])); 617 } 618 619 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 620 const char *buf, size_t count) 621 { 622 int nr = to_sensor_dev_attr(attr)->index; 623 struct i2c_client *client = to_i2c_client(dev); 624 struct lm85_data *data = i2c_get_clientdata(client); 625 long val = simple_strtol(buf, NULL, 10); 626 627 mutex_lock(&data->update_lock); 628 data->in_min[nr] = INS_TO_REG(nr, val); 629 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 630 mutex_unlock(&data->update_lock); 631 return count; 632 } 633 634 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 635 char *buf) 636 { 637 int nr = to_sensor_dev_attr(attr)->index; 638 struct lm85_data *data = lm85_update_device(dev); 639 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr])); 640 } 641 642 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 643 const char *buf, size_t count) 644 { 645 int nr = to_sensor_dev_attr(attr)->index; 646 struct i2c_client *client = to_i2c_client(dev); 647 struct lm85_data *data = i2c_get_clientdata(client); 648 long val = simple_strtol(buf, NULL, 10); 649 650 mutex_lock(&data->update_lock); 651 data->in_max[nr] = INS_TO_REG(nr, val); 652 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 653 mutex_unlock(&data->update_lock); 654 return count; 655 } 656 657 #define show_in_reg(offset) \ 658 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 659 show_in, NULL, offset); \ 660 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 661 show_in_min, set_in_min, offset); \ 662 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 663 show_in_max, set_in_max, offset) 664 665 show_in_reg(0); 666 show_in_reg(1); 667 show_in_reg(2); 668 show_in_reg(3); 669 show_in_reg(4); 670 show_in_reg(5); 671 show_in_reg(6); 672 show_in_reg(7); 673 674 /* Temps */ 675 676 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 677 char *buf) 678 { 679 int nr = to_sensor_dev_attr(attr)->index; 680 struct lm85_data *data = lm85_update_device(dev); 681 return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr], 682 data->temp_ext[nr])); 683 } 684 685 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, 686 char *buf) 687 { 688 int nr = to_sensor_dev_attr(attr)->index; 689 struct lm85_data *data = lm85_update_device(dev); 690 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); 691 } 692 693 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, 694 const char *buf, size_t count) 695 { 696 int nr = to_sensor_dev_attr(attr)->index; 697 struct i2c_client *client = to_i2c_client(dev); 698 struct lm85_data *data = i2c_get_clientdata(client); 699 long val = simple_strtol(buf, NULL, 10); 700 701 if (IS_ADT7468_OFF64(data)) 702 val += 64; 703 704 mutex_lock(&data->update_lock); 705 data->temp_min[nr] = TEMP_TO_REG(val); 706 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 707 mutex_unlock(&data->update_lock); 708 return count; 709 } 710 711 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 712 char *buf) 713 { 714 int nr = to_sensor_dev_attr(attr)->index; 715 struct lm85_data *data = lm85_update_device(dev); 716 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); 717 } 718 719 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 720 const char *buf, size_t count) 721 { 722 int nr = to_sensor_dev_attr(attr)->index; 723 struct i2c_client *client = to_i2c_client(dev); 724 struct lm85_data *data = i2c_get_clientdata(client); 725 long val = simple_strtol(buf, NULL, 10); 726 727 if (IS_ADT7468_OFF64(data)) 728 val += 64; 729 730 mutex_lock(&data->update_lock); 731 data->temp_max[nr] = TEMP_TO_REG(val); 732 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 733 mutex_unlock(&data->update_lock); 734 return count; 735 } 736 737 #define show_temp_reg(offset) \ 738 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 739 show_temp, NULL, offset - 1); \ 740 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 741 show_temp_min, set_temp_min, offset - 1); \ 742 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 743 show_temp_max, set_temp_max, offset - 1); 744 745 show_temp_reg(1); 746 show_temp_reg(2); 747 show_temp_reg(3); 748 749 750 /* Automatic PWM control */ 751 752 static ssize_t show_pwm_auto_channels(struct device *dev, 753 struct device_attribute *attr, char *buf) 754 { 755 int nr = to_sensor_dev_attr(attr)->index; 756 struct lm85_data *data = lm85_update_device(dev); 757 return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 758 } 759 760 static ssize_t set_pwm_auto_channels(struct device *dev, 761 struct device_attribute *attr, const char *buf, size_t count) 762 { 763 int nr = to_sensor_dev_attr(attr)->index; 764 struct i2c_client *client = to_i2c_client(dev); 765 struct lm85_data *data = i2c_get_clientdata(client); 766 long val = simple_strtol(buf, NULL, 10); 767 768 mutex_lock(&data->update_lock); 769 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 770 | ZONE_TO_REG(val); 771 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 772 data->autofan[nr].config); 773 mutex_unlock(&data->update_lock); 774 return count; 775 } 776 777 static ssize_t show_pwm_auto_pwm_min(struct device *dev, 778 struct device_attribute *attr, char *buf) 779 { 780 int nr = to_sensor_dev_attr(attr)->index; 781 struct lm85_data *data = lm85_update_device(dev); 782 return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 783 } 784 785 static ssize_t set_pwm_auto_pwm_min(struct device *dev, 786 struct device_attribute *attr, const char *buf, size_t count) 787 { 788 int nr = to_sensor_dev_attr(attr)->index; 789 struct i2c_client *client = to_i2c_client(dev); 790 struct lm85_data *data = i2c_get_clientdata(client); 791 long val = simple_strtol(buf, NULL, 10); 792 793 mutex_lock(&data->update_lock); 794 data->autofan[nr].min_pwm = PWM_TO_REG(val); 795 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 796 data->autofan[nr].min_pwm); 797 mutex_unlock(&data->update_lock); 798 return count; 799 } 800 801 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, 802 struct device_attribute *attr, char *buf) 803 { 804 int nr = to_sensor_dev_attr(attr)->index; 805 struct lm85_data *data = lm85_update_device(dev); 806 return sprintf(buf, "%d\n", data->autofan[nr].min_off); 807 } 808 809 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, 810 struct device_attribute *attr, const char *buf, size_t count) 811 { 812 int nr = to_sensor_dev_attr(attr)->index; 813 struct i2c_client *client = to_i2c_client(dev); 814 struct lm85_data *data = i2c_get_clientdata(client); 815 long val = simple_strtol(buf, NULL, 10); 816 u8 tmp; 817 818 mutex_lock(&data->update_lock); 819 data->autofan[nr].min_off = val; 820 tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 821 tmp &= ~(0x20 << nr); 822 if (data->autofan[nr].min_off) 823 tmp |= 0x20 << nr; 824 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp); 825 mutex_unlock(&data->update_lock); 826 return count; 827 } 828 829 #define pwm_auto(offset) \ 830 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \ 831 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \ 832 set_pwm_auto_channels, offset - 1); \ 833 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \ 834 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \ 835 set_pwm_auto_pwm_min, offset - 1); \ 836 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \ 837 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \ 838 set_pwm_auto_pwm_minctl, offset - 1) 839 840 pwm_auto(1); 841 pwm_auto(2); 842 pwm_auto(3); 843 844 /* Temperature settings for automatic PWM control */ 845 846 static ssize_t show_temp_auto_temp_off(struct device *dev, 847 struct device_attribute *attr, char *buf) 848 { 849 int nr = to_sensor_dev_attr(attr)->index; 850 struct lm85_data *data = lm85_update_device(dev); 851 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 852 HYST_FROM_REG(data->zone[nr].hyst)); 853 } 854 855 static ssize_t set_temp_auto_temp_off(struct device *dev, 856 struct device_attribute *attr, const char *buf, size_t count) 857 { 858 int nr = to_sensor_dev_attr(attr)->index; 859 struct i2c_client *client = to_i2c_client(dev); 860 struct lm85_data *data = i2c_get_clientdata(client); 861 int min; 862 long val = simple_strtol(buf, NULL, 10); 863 864 mutex_lock(&data->update_lock); 865 min = TEMP_FROM_REG(data->zone[nr].limit); 866 data->zone[nr].off_desired = TEMP_TO_REG(val); 867 data->zone[nr].hyst = HYST_TO_REG(min - val); 868 if (nr == 0 || nr == 1) { 869 lm85_write_value(client, LM85_REG_AFAN_HYST1, 870 (data->zone[0].hyst << 4) 871 | data->zone[1].hyst); 872 } else { 873 lm85_write_value(client, LM85_REG_AFAN_HYST2, 874 (data->zone[2].hyst << 4)); 875 } 876 mutex_unlock(&data->update_lock); 877 return count; 878 } 879 880 static ssize_t show_temp_auto_temp_min(struct device *dev, 881 struct device_attribute *attr, char *buf) 882 { 883 int nr = to_sensor_dev_attr(attr)->index; 884 struct lm85_data *data = lm85_update_device(dev); 885 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit)); 886 } 887 888 static ssize_t set_temp_auto_temp_min(struct device *dev, 889 struct device_attribute *attr, const char *buf, size_t count) 890 { 891 int nr = to_sensor_dev_attr(attr)->index; 892 struct i2c_client *client = to_i2c_client(dev); 893 struct lm85_data *data = i2c_get_clientdata(client); 894 long val = simple_strtol(buf, NULL, 10); 895 896 mutex_lock(&data->update_lock); 897 data->zone[nr].limit = TEMP_TO_REG(val); 898 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 899 data->zone[nr].limit); 900 901 /* Update temp_auto_max and temp_auto_range */ 902 data->zone[nr].range = RANGE_TO_REG( 903 TEMP_FROM_REG(data->zone[nr].max_desired) - 904 TEMP_FROM_REG(data->zone[nr].limit)); 905 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 906 ((data->zone[nr].range & 0x0f) << 4) 907 | (data->pwm_freq[nr] & 0x07)); 908 909 /* Update temp_auto_hyst and temp_auto_off */ 910 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 911 data->zone[nr].limit) - TEMP_FROM_REG( 912 data->zone[nr].off_desired)); 913 if (nr == 0 || nr == 1) { 914 lm85_write_value(client, LM85_REG_AFAN_HYST1, 915 (data->zone[0].hyst << 4) 916 | data->zone[1].hyst); 917 } else { 918 lm85_write_value(client, LM85_REG_AFAN_HYST2, 919 (data->zone[2].hyst << 4)); 920 } 921 mutex_unlock(&data->update_lock); 922 return count; 923 } 924 925 static ssize_t show_temp_auto_temp_max(struct device *dev, 926 struct device_attribute *attr, char *buf) 927 { 928 int nr = to_sensor_dev_attr(attr)->index; 929 struct lm85_data *data = lm85_update_device(dev); 930 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 931 RANGE_FROM_REG(data->zone[nr].range)); 932 } 933 934 static ssize_t set_temp_auto_temp_max(struct device *dev, 935 struct device_attribute *attr, const char *buf, size_t count) 936 { 937 int nr = to_sensor_dev_attr(attr)->index; 938 struct i2c_client *client = to_i2c_client(dev); 939 struct lm85_data *data = i2c_get_clientdata(client); 940 int min; 941 long val = simple_strtol(buf, NULL, 10); 942 943 mutex_lock(&data->update_lock); 944 min = TEMP_FROM_REG(data->zone[nr].limit); 945 data->zone[nr].max_desired = TEMP_TO_REG(val); 946 data->zone[nr].range = RANGE_TO_REG( 947 val - min); 948 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 949 ((data->zone[nr].range & 0x0f) << 4) 950 | (data->pwm_freq[nr] & 0x07)); 951 mutex_unlock(&data->update_lock); 952 return count; 953 } 954 955 static ssize_t show_temp_auto_temp_crit(struct device *dev, 956 struct device_attribute *attr, char *buf) 957 { 958 int nr = to_sensor_dev_attr(attr)->index; 959 struct lm85_data *data = lm85_update_device(dev); 960 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 961 } 962 963 static ssize_t set_temp_auto_temp_crit(struct device *dev, 964 struct device_attribute *attr, const char *buf, size_t count) 965 { 966 int nr = to_sensor_dev_attr(attr)->index; 967 struct i2c_client *client = to_i2c_client(dev); 968 struct lm85_data *data = i2c_get_clientdata(client); 969 long val = simple_strtol(buf, NULL, 10); 970 971 mutex_lock(&data->update_lock); 972 data->zone[nr].critical = TEMP_TO_REG(val); 973 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 974 data->zone[nr].critical); 975 mutex_unlock(&data->update_lock); 976 return count; 977 } 978 979 #define temp_auto(offset) \ 980 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \ 981 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \ 982 set_temp_auto_temp_off, offset - 1); \ 983 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \ 984 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \ 985 set_temp_auto_temp_min, offset - 1); \ 986 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \ 987 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \ 988 set_temp_auto_temp_max, offset - 1); \ 989 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \ 990 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \ 991 set_temp_auto_temp_crit, offset - 1); 992 993 temp_auto(1); 994 temp_auto(2); 995 temp_auto(3); 996 997 static struct attribute *lm85_attributes[] = { 998 &sensor_dev_attr_fan1_input.dev_attr.attr, 999 &sensor_dev_attr_fan2_input.dev_attr.attr, 1000 &sensor_dev_attr_fan3_input.dev_attr.attr, 1001 &sensor_dev_attr_fan4_input.dev_attr.attr, 1002 &sensor_dev_attr_fan1_min.dev_attr.attr, 1003 &sensor_dev_attr_fan2_min.dev_attr.attr, 1004 &sensor_dev_attr_fan3_min.dev_attr.attr, 1005 &sensor_dev_attr_fan4_min.dev_attr.attr, 1006 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 1007 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 1008 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 1009 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 1010 1011 &sensor_dev_attr_pwm1.dev_attr.attr, 1012 &sensor_dev_attr_pwm2.dev_attr.attr, 1013 &sensor_dev_attr_pwm3.dev_attr.attr, 1014 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 1015 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 1016 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 1017 &sensor_dev_attr_pwm1_freq.dev_attr.attr, 1018 &sensor_dev_attr_pwm2_freq.dev_attr.attr, 1019 &sensor_dev_attr_pwm3_freq.dev_attr.attr, 1020 1021 &sensor_dev_attr_in0_input.dev_attr.attr, 1022 &sensor_dev_attr_in1_input.dev_attr.attr, 1023 &sensor_dev_attr_in2_input.dev_attr.attr, 1024 &sensor_dev_attr_in3_input.dev_attr.attr, 1025 &sensor_dev_attr_in0_min.dev_attr.attr, 1026 &sensor_dev_attr_in1_min.dev_attr.attr, 1027 &sensor_dev_attr_in2_min.dev_attr.attr, 1028 &sensor_dev_attr_in3_min.dev_attr.attr, 1029 &sensor_dev_attr_in0_max.dev_attr.attr, 1030 &sensor_dev_attr_in1_max.dev_attr.attr, 1031 &sensor_dev_attr_in2_max.dev_attr.attr, 1032 &sensor_dev_attr_in3_max.dev_attr.attr, 1033 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1034 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1035 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1036 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1037 1038 &sensor_dev_attr_temp1_input.dev_attr.attr, 1039 &sensor_dev_attr_temp2_input.dev_attr.attr, 1040 &sensor_dev_attr_temp3_input.dev_attr.attr, 1041 &sensor_dev_attr_temp1_min.dev_attr.attr, 1042 &sensor_dev_attr_temp2_min.dev_attr.attr, 1043 &sensor_dev_attr_temp3_min.dev_attr.attr, 1044 &sensor_dev_attr_temp1_max.dev_attr.attr, 1045 &sensor_dev_attr_temp2_max.dev_attr.attr, 1046 &sensor_dev_attr_temp3_max.dev_attr.attr, 1047 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1048 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1049 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1050 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1051 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1052 1053 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr, 1054 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr, 1055 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr, 1056 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr, 1057 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr, 1058 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr, 1059 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr, 1060 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr, 1061 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr, 1062 1063 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr, 1064 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr, 1065 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr, 1066 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr, 1067 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr, 1068 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr, 1069 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr, 1070 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr, 1071 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr, 1072 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr, 1073 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr, 1074 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr, 1075 1076 &dev_attr_vrm.attr, 1077 &dev_attr_cpu0_vid.attr, 1078 &dev_attr_alarms.attr, 1079 NULL 1080 }; 1081 1082 static const struct attribute_group lm85_group = { 1083 .attrs = lm85_attributes, 1084 }; 1085 1086 static struct attribute *lm85_attributes_in4[] = { 1087 &sensor_dev_attr_in4_input.dev_attr.attr, 1088 &sensor_dev_attr_in4_min.dev_attr.attr, 1089 &sensor_dev_attr_in4_max.dev_attr.attr, 1090 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1091 NULL 1092 }; 1093 1094 static const struct attribute_group lm85_group_in4 = { 1095 .attrs = lm85_attributes_in4, 1096 }; 1097 1098 static struct attribute *lm85_attributes_in567[] = { 1099 &sensor_dev_attr_in5_input.dev_attr.attr, 1100 &sensor_dev_attr_in6_input.dev_attr.attr, 1101 &sensor_dev_attr_in7_input.dev_attr.attr, 1102 &sensor_dev_attr_in5_min.dev_attr.attr, 1103 &sensor_dev_attr_in6_min.dev_attr.attr, 1104 &sensor_dev_attr_in7_min.dev_attr.attr, 1105 &sensor_dev_attr_in5_max.dev_attr.attr, 1106 &sensor_dev_attr_in6_max.dev_attr.attr, 1107 &sensor_dev_attr_in7_max.dev_attr.attr, 1108 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1109 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1110 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1111 NULL 1112 }; 1113 1114 static const struct attribute_group lm85_group_in567 = { 1115 .attrs = lm85_attributes_in567, 1116 }; 1117 1118 static void lm85_init_client(struct i2c_client *client) 1119 { 1120 int value; 1121 1122 /* Start monitoring if needed */ 1123 value = lm85_read_value(client, LM85_REG_CONFIG); 1124 if (!(value & 0x01)) { 1125 dev_info(&client->dev, "Starting monitoring\n"); 1126 lm85_write_value(client, LM85_REG_CONFIG, value | 0x01); 1127 } 1128 1129 /* Warn about unusual configuration bits */ 1130 if (value & 0x02) 1131 dev_warn(&client->dev, "Device configuration is locked\n"); 1132 if (!(value & 0x04)) 1133 dev_warn(&client->dev, "Device is not ready\n"); 1134 } 1135 1136 /* Return 0 if detection is successful, -ENODEV otherwise */ 1137 static int lm85_detect(struct i2c_client *client, int kind, 1138 struct i2c_board_info *info) 1139 { 1140 struct i2c_adapter *adapter = client->adapter; 1141 int address = client->addr; 1142 const char *type_name; 1143 1144 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { 1145 /* We need to be able to do byte I/O */ 1146 return -ENODEV; 1147 } 1148 1149 /* If auto-detecting, determine the chip type */ 1150 if (kind < 0) { 1151 int company = lm85_read_value(client, LM85_REG_COMPANY); 1152 int verstep = lm85_read_value(client, LM85_REG_VERSTEP); 1153 1154 dev_dbg(&adapter->dev, "Detecting device at 0x%02x with " 1155 "COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1156 address, company, verstep); 1157 1158 /* All supported chips have the version in common */ 1159 if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC && 1160 (verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC2) { 1161 dev_dbg(&adapter->dev, "Autodetection failed: " 1162 "unsupported version\n"); 1163 return -ENODEV; 1164 } 1165 kind = any_chip; 1166 1167 /* Now, refine the detection */ 1168 if (company == LM85_COMPANY_NATIONAL) { 1169 switch (verstep) { 1170 case LM85_VERSTEP_LM85C: 1171 kind = lm85c; 1172 break; 1173 case LM85_VERSTEP_LM85B: 1174 kind = lm85b; 1175 break; 1176 } 1177 } else if (company == LM85_COMPANY_ANALOG_DEV) { 1178 switch (verstep) { 1179 case LM85_VERSTEP_ADM1027: 1180 kind = adm1027; 1181 break; 1182 case LM85_VERSTEP_ADT7463: 1183 case LM85_VERSTEP_ADT7463C: 1184 kind = adt7463; 1185 break; 1186 case LM85_VERSTEP_ADT7468_1: 1187 case LM85_VERSTEP_ADT7468_2: 1188 kind = adt7468; 1189 break; 1190 } 1191 } else if (company == LM85_COMPANY_SMSC) { 1192 switch (verstep) { 1193 case LM85_VERSTEP_EMC6D100_A0: 1194 case LM85_VERSTEP_EMC6D100_A1: 1195 /* Note: we can't tell a '100 from a '101 */ 1196 kind = emc6d100; 1197 break; 1198 case LM85_VERSTEP_EMC6D102: 1199 kind = emc6d102; 1200 break; 1201 } 1202 } else { 1203 dev_dbg(&adapter->dev, "Autodetection failed: " 1204 "unknown vendor\n"); 1205 return -ENODEV; 1206 } 1207 } 1208 1209 switch (kind) { 1210 case lm85b: 1211 type_name = "lm85b"; 1212 break; 1213 case lm85c: 1214 type_name = "lm85c"; 1215 break; 1216 case adm1027: 1217 type_name = "adm1027"; 1218 break; 1219 case adt7463: 1220 type_name = "adt7463"; 1221 break; 1222 case adt7468: 1223 type_name = "adt7468"; 1224 break; 1225 case emc6d100: 1226 type_name = "emc6d100"; 1227 break; 1228 case emc6d102: 1229 type_name = "emc6d102"; 1230 break; 1231 default: 1232 type_name = "lm85"; 1233 } 1234 strlcpy(info->type, type_name, I2C_NAME_SIZE); 1235 1236 return 0; 1237 } 1238 1239 static int lm85_probe(struct i2c_client *client, 1240 const struct i2c_device_id *id) 1241 { 1242 struct lm85_data *data; 1243 int err; 1244 1245 data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL); 1246 if (!data) 1247 return -ENOMEM; 1248 1249 i2c_set_clientdata(client, data); 1250 data->type = id->driver_data; 1251 mutex_init(&data->update_lock); 1252 1253 /* Fill in the chip specific driver values */ 1254 switch (data->type) { 1255 case adm1027: 1256 case adt7463: 1257 case emc6d100: 1258 case emc6d102: 1259 data->freq_map = adm1027_freq_map; 1260 break; 1261 default: 1262 data->freq_map = lm85_freq_map; 1263 } 1264 1265 /* Set the VRM version */ 1266 data->vrm = vid_which_vrm(); 1267 1268 /* Initialize the LM85 chip */ 1269 lm85_init_client(client); 1270 1271 /* Register sysfs hooks */ 1272 err = sysfs_create_group(&client->dev.kobj, &lm85_group); 1273 if (err) 1274 goto err_kfree; 1275 1276 /* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used 1277 as a sixth digital VID input rather than an analog input. */ 1278 data->vid = lm85_read_value(client, LM85_REG_VID); 1279 if (!((data->type == adt7463 || data->type == adt7468) && 1280 (data->vid & 0x80))) 1281 if ((err = sysfs_create_group(&client->dev.kobj, 1282 &lm85_group_in4))) 1283 goto err_remove_files; 1284 1285 /* The EMC6D100 has 3 additional voltage inputs */ 1286 if (data->type == emc6d100) 1287 if ((err = sysfs_create_group(&client->dev.kobj, 1288 &lm85_group_in567))) 1289 goto err_remove_files; 1290 1291 data->hwmon_dev = hwmon_device_register(&client->dev); 1292 if (IS_ERR(data->hwmon_dev)) { 1293 err = PTR_ERR(data->hwmon_dev); 1294 goto err_remove_files; 1295 } 1296 1297 return 0; 1298 1299 /* Error out and cleanup code */ 1300 err_remove_files: 1301 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1302 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); 1303 if (data->type == emc6d100) 1304 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); 1305 err_kfree: 1306 kfree(data); 1307 return err; 1308 } 1309 1310 static int lm85_remove(struct i2c_client *client) 1311 { 1312 struct lm85_data *data = i2c_get_clientdata(client); 1313 hwmon_device_unregister(data->hwmon_dev); 1314 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1315 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); 1316 if (data->type == emc6d100) 1317 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); 1318 kfree(data); 1319 return 0; 1320 } 1321 1322 1323 static int lm85_read_value(struct i2c_client *client, u8 reg) 1324 { 1325 int res; 1326 1327 /* What size location is it? */ 1328 switch (reg) { 1329 case LM85_REG_FAN(0): /* Read WORD data */ 1330 case LM85_REG_FAN(1): 1331 case LM85_REG_FAN(2): 1332 case LM85_REG_FAN(3): 1333 case LM85_REG_FAN_MIN(0): 1334 case LM85_REG_FAN_MIN(1): 1335 case LM85_REG_FAN_MIN(2): 1336 case LM85_REG_FAN_MIN(3): 1337 case LM85_REG_ALARM1: /* Read both bytes at once */ 1338 res = i2c_smbus_read_byte_data(client, reg) & 0xff; 1339 res |= i2c_smbus_read_byte_data(client, reg + 1) << 8; 1340 break; 1341 default: /* Read BYTE data */ 1342 res = i2c_smbus_read_byte_data(client, reg); 1343 break; 1344 } 1345 1346 return res; 1347 } 1348 1349 static void lm85_write_value(struct i2c_client *client, u8 reg, int value) 1350 { 1351 switch (reg) { 1352 case LM85_REG_FAN(0): /* Write WORD data */ 1353 case LM85_REG_FAN(1): 1354 case LM85_REG_FAN(2): 1355 case LM85_REG_FAN(3): 1356 case LM85_REG_FAN_MIN(0): 1357 case LM85_REG_FAN_MIN(1): 1358 case LM85_REG_FAN_MIN(2): 1359 case LM85_REG_FAN_MIN(3): 1360 /* NOTE: ALARM is read only, so not included here */ 1361 i2c_smbus_write_byte_data(client, reg, value & 0xff); 1362 i2c_smbus_write_byte_data(client, reg + 1, value >> 8); 1363 break; 1364 default: /* Write BYTE data */ 1365 i2c_smbus_write_byte_data(client, reg, value); 1366 break; 1367 } 1368 } 1369 1370 static struct lm85_data *lm85_update_device(struct device *dev) 1371 { 1372 struct i2c_client *client = to_i2c_client(dev); 1373 struct lm85_data *data = i2c_get_clientdata(client); 1374 int i; 1375 1376 mutex_lock(&data->update_lock); 1377 1378 if (!data->valid || 1379 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) { 1380 /* Things that change quickly */ 1381 dev_dbg(&client->dev, "Reading sensor values\n"); 1382 1383 /* Have to read extended bits first to "freeze" the 1384 * more significant bits that are read later. 1385 * There are 2 additional resolution bits per channel and we 1386 * have room for 4, so we shift them to the left. 1387 */ 1388 if (data->type == adm1027 || data->type == adt7463 || 1389 data->type == adt7468) { 1390 int ext1 = lm85_read_value(client, 1391 ADM1027_REG_EXTEND_ADC1); 1392 int ext2 = lm85_read_value(client, 1393 ADM1027_REG_EXTEND_ADC2); 1394 int val = (ext1 << 8) + ext2; 1395 1396 for (i = 0; i <= 4; i++) 1397 data->in_ext[i] = 1398 ((val >> (i * 2)) & 0x03) << 2; 1399 1400 for (i = 0; i <= 2; i++) 1401 data->temp_ext[i] = 1402 (val >> ((i + 4) * 2)) & 0x0c; 1403 } 1404 1405 data->vid = lm85_read_value(client, LM85_REG_VID); 1406 1407 for (i = 0; i <= 3; ++i) { 1408 data->in[i] = 1409 lm85_read_value(client, LM85_REG_IN(i)); 1410 data->fan[i] = 1411 lm85_read_value(client, LM85_REG_FAN(i)); 1412 } 1413 1414 if (!((data->type == adt7463 || data->type == adt7468) && 1415 (data->vid & 0x80))) { 1416 data->in[4] = lm85_read_value(client, 1417 LM85_REG_IN(4)); 1418 } 1419 1420 if (data->type == adt7468) 1421 data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5); 1422 1423 for (i = 0; i <= 2; ++i) { 1424 data->temp[i] = 1425 lm85_read_value(client, LM85_REG_TEMP(i)); 1426 data->pwm[i] = 1427 lm85_read_value(client, LM85_REG_PWM(i)); 1428 1429 if (IS_ADT7468_OFF64(data)) 1430 data->temp[i] -= 64; 1431 } 1432 1433 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1434 1435 if (data->type == emc6d100) { 1436 /* Three more voltage sensors */ 1437 for (i = 5; i <= 7; ++i) { 1438 data->in[i] = lm85_read_value(client, 1439 EMC6D100_REG_IN(i)); 1440 } 1441 /* More alarm bits */ 1442 data->alarms |= lm85_read_value(client, 1443 EMC6D100_REG_ALARM3) << 16; 1444 } else if (data->type == emc6d102) { 1445 /* Have to read LSB bits after the MSB ones because 1446 the reading of the MSB bits has frozen the 1447 LSBs (backward from the ADM1027). 1448 */ 1449 int ext1 = lm85_read_value(client, 1450 EMC6D102_REG_EXTEND_ADC1); 1451 int ext2 = lm85_read_value(client, 1452 EMC6D102_REG_EXTEND_ADC2); 1453 int ext3 = lm85_read_value(client, 1454 EMC6D102_REG_EXTEND_ADC3); 1455 int ext4 = lm85_read_value(client, 1456 EMC6D102_REG_EXTEND_ADC4); 1457 data->in_ext[0] = ext3 & 0x0f; 1458 data->in_ext[1] = ext4 & 0x0f; 1459 data->in_ext[2] = ext4 >> 4; 1460 data->in_ext[3] = ext3 >> 4; 1461 data->in_ext[4] = ext2 >> 4; 1462 1463 data->temp_ext[0] = ext1 & 0x0f; 1464 data->temp_ext[1] = ext2 & 0x0f; 1465 data->temp_ext[2] = ext1 >> 4; 1466 } 1467 1468 data->last_reading = jiffies; 1469 } /* last_reading */ 1470 1471 if (!data->valid || 1472 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) { 1473 /* Things that don't change often */ 1474 dev_dbg(&client->dev, "Reading config values\n"); 1475 1476 for (i = 0; i <= 3; ++i) { 1477 data->in_min[i] = 1478 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1479 data->in_max[i] = 1480 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1481 data->fan_min[i] = 1482 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1483 } 1484 1485 if (!((data->type == adt7463 || data->type == adt7468) && 1486 (data->vid & 0x80))) { 1487 data->in_min[4] = lm85_read_value(client, 1488 LM85_REG_IN_MIN(4)); 1489 data->in_max[4] = lm85_read_value(client, 1490 LM85_REG_IN_MAX(4)); 1491 } 1492 1493 if (data->type == emc6d100) { 1494 for (i = 5; i <= 7; ++i) { 1495 data->in_min[i] = lm85_read_value(client, 1496 EMC6D100_REG_IN_MIN(i)); 1497 data->in_max[i] = lm85_read_value(client, 1498 EMC6D100_REG_IN_MAX(i)); 1499 } 1500 } 1501 1502 for (i = 0; i <= 2; ++i) { 1503 int val; 1504 1505 data->temp_min[i] = 1506 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1507 data->temp_max[i] = 1508 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1509 1510 data->autofan[i].config = 1511 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1512 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1513 data->pwm_freq[i] = val & 0x07; 1514 data->zone[i].range = val >> 4; 1515 data->autofan[i].min_pwm = 1516 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1517 data->zone[i].limit = 1518 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1519 data->zone[i].critical = 1520 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1521 1522 if (IS_ADT7468_OFF64(data)) { 1523 data->temp_min[i] -= 64; 1524 data->temp_max[i] -= 64; 1525 data->zone[i].limit -= 64; 1526 data->zone[i].critical -= 64; 1527 } 1528 } 1529 1530 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1531 data->autofan[0].min_off = (i & 0x20) != 0; 1532 data->autofan[1].min_off = (i & 0x40) != 0; 1533 data->autofan[2].min_off = (i & 0x80) != 0; 1534 1535 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1536 data->zone[0].hyst = i >> 4; 1537 data->zone[1].hyst = i & 0x0f; 1538 1539 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1540 data->zone[2].hyst = i >> 4; 1541 1542 data->last_config = jiffies; 1543 } /* last_config */ 1544 1545 data->valid = 1; 1546 1547 mutex_unlock(&data->update_lock); 1548 1549 return data; 1550 } 1551 1552 1553 static int __init sm_lm85_init(void) 1554 { 1555 return i2c_add_driver(&lm85_driver); 1556 } 1557 1558 static void __exit sm_lm85_exit(void) 1559 { 1560 i2c_del_driver(&lm85_driver); 1561 } 1562 1563 MODULE_LICENSE("GPL"); 1564 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, " 1565 "Margit Schubert-While <margitsw@t-online.de>, " 1566 "Justin Thiessen <jthiessen@penguincomputing.com>"); 1567 MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1568 1569 module_init(sm_lm85_init); 1570 module_exit(sm_lm85_exit); 1571