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 9 Chip details at <http://www.national.com/ds/LM/LM85.pdf> 10 11 This program is free software; you can redistribute it and/or modify 12 it under the terms of the GNU General Public License as published by 13 the Free Software Foundation; either version 2 of the License, or 14 (at your option) any later version. 15 16 This program is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 GNU General Public License for more details. 20 21 You should have received a copy of the GNU General Public License 22 along with this program; if not, write to the Free Software 23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 24 */ 25 26 #include <linux/module.h> 27 #include <linux/init.h> 28 #include <linux/slab.h> 29 #include <linux/jiffies.h> 30 #include <linux/i2c.h> 31 #include <linux/hwmon.h> 32 #include <linux/hwmon-vid.h> 33 #include <linux/hwmon-sysfs.h> 34 #include <linux/err.h> 35 #include <linux/mutex.h> 36 37 /* Addresses to scan */ 38 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 39 40 /* Insmod parameters */ 41 I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102); 42 43 /* The LM85 registers */ 44 45 #define LM85_REG_IN(nr) (0x20 + (nr)) 46 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2) 47 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2) 48 49 #define LM85_REG_TEMP(nr) (0x25 + (nr)) 50 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2) 51 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2) 52 53 /* Fan speeds are LSB, MSB (2 bytes) */ 54 #define LM85_REG_FAN(nr) (0x28 + (nr) *2) 55 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2) 56 57 #define LM85_REG_PWM(nr) (0x30 + (nr)) 58 59 #define ADT7463_REG_OPPOINT(nr) (0x33 + (nr)) 60 61 #define ADT7463_REG_TMIN_CTL1 0x36 62 #define ADT7463_REG_TMIN_CTL2 0x37 63 64 #define LM85_REG_DEVICE 0x3d 65 #define LM85_REG_COMPANY 0x3e 66 #define LM85_REG_VERSTEP 0x3f 67 /* These are the recognized values for the above regs */ 68 #define LM85_DEVICE_ADX 0x27 69 #define LM85_COMPANY_NATIONAL 0x01 70 #define LM85_COMPANY_ANALOG_DEV 0x41 71 #define LM85_COMPANY_SMSC 0x5c 72 #define LM85_VERSTEP_VMASK 0xf0 73 #define LM85_VERSTEP_GENERIC 0x60 74 #define LM85_VERSTEP_LM85C 0x60 75 #define LM85_VERSTEP_LM85B 0x62 76 #define LM85_VERSTEP_ADM1027 0x60 77 #define LM85_VERSTEP_ADT7463 0x62 78 #define LM85_VERSTEP_ADT7463C 0x6A 79 #define LM85_VERSTEP_EMC6D100_A0 0x60 80 #define LM85_VERSTEP_EMC6D100_A1 0x61 81 #define LM85_VERSTEP_EMC6D102 0x65 82 83 #define LM85_REG_CONFIG 0x40 84 85 #define LM85_REG_ALARM1 0x41 86 #define LM85_REG_ALARM2 0x42 87 88 #define LM85_REG_VID 0x43 89 90 /* Automated FAN control */ 91 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr)) 92 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr)) 93 #define LM85_REG_AFAN_SPIKE1 0x62 94 #define LM85_REG_AFAN_SPIKE2 0x63 95 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr)) 96 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr)) 97 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr)) 98 #define LM85_REG_AFAN_HYST1 0x6d 99 #define LM85_REG_AFAN_HYST2 0x6e 100 101 #define LM85_REG_TACH_MODE 0x74 102 #define LM85_REG_SPINUP_CTL 0x75 103 104 #define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr)) 105 #define ADM1027_REG_CONFIG2 0x73 106 #define ADM1027_REG_INTMASK1 0x74 107 #define ADM1027_REG_INTMASK2 0x75 108 #define ADM1027_REG_EXTEND_ADC1 0x76 109 #define ADM1027_REG_EXTEND_ADC2 0x77 110 #define ADM1027_REG_CONFIG3 0x78 111 #define ADM1027_REG_FAN_PPR 0x7b 112 113 #define ADT7463_REG_THERM 0x79 114 #define ADT7463_REG_THERM_LIMIT 0x7A 115 116 #define EMC6D100_REG_ALARM3 0x7d 117 /* IN5, IN6 and IN7 */ 118 #define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5)) 119 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2) 120 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2) 121 #define EMC6D102_REG_EXTEND_ADC1 0x85 122 #define EMC6D102_REG_EXTEND_ADC2 0x86 123 #define EMC6D102_REG_EXTEND_ADC3 0x87 124 #define EMC6D102_REG_EXTEND_ADC4 0x88 125 126 127 /* Conversions. Rounding and limit checking is only done on the TO_REG 128 variants. Note that you should be a bit careful with which arguments 129 these macros are called: arguments may be evaluated more than once. 130 */ 131 132 /* IN are scaled acording to built-in resistors */ 133 static int lm85_scaling[] = { /* .001 Volts */ 134 2500, 2250, 3300, 5000, 12000, 135 3300, 1500, 1800 /*EMC6D100*/ 136 }; 137 #define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from)) 138 139 #define INS_TO_REG(n,val) \ 140 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255) 141 142 #define INSEXT_FROM_REG(n,val,ext) \ 143 SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n]) 144 145 #define INS_FROM_REG(n,val) SCALE((val), 192, lm85_scaling[n]) 146 147 /* FAN speed is measured using 90kHz clock */ 148 static inline u16 FAN_TO_REG(unsigned long val) 149 { 150 if (!val) 151 return 0xffff; 152 return SENSORS_LIMIT(5400000 / val, 1, 0xfffe); 153 } 154 #define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val)) 155 156 /* Temperature is reported in .001 degC increments */ 157 #define TEMP_TO_REG(val) \ 158 SENSORS_LIMIT(SCALE(val,1000,1),-127,127) 159 #define TEMPEXT_FROM_REG(val,ext) \ 160 SCALE(((val) << 4) + (ext), 16, 1000) 161 #define TEMP_FROM_REG(val) ((val) * 1000) 162 163 #define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255)) 164 #define PWM_FROM_REG(val) (val) 165 166 167 /* ZONEs have the following parameters: 168 * Limit (low) temp, 1. degC 169 * Hysteresis (below limit), 1. degC (0-15) 170 * Range of speed control, .1 degC (2-80) 171 * Critical (high) temp, 1. degC 172 * 173 * FAN PWMs have the following parameters: 174 * Reference Zone, 1, 2, 3, etc. 175 * Spinup time, .05 sec 176 * PWM value at limit/low temp, 1 count 177 * PWM Frequency, 1. Hz 178 * PWM is Min or OFF below limit, flag 179 * Invert PWM output, flag 180 * 181 * Some chips filter the temp, others the fan. 182 * Filter constant (or disabled) .1 seconds 183 */ 184 185 /* These are the zone temperature range encodings in .001 degree C */ 186 static int lm85_range_map[] = { 187 2000, 2500, 3300, 4000, 5000, 6600, 188 8000, 10000, 13300, 16000, 20000, 26600, 189 32000, 40000, 53300, 80000 190 }; 191 static int RANGE_TO_REG( int range ) 192 { 193 int i; 194 195 if ( range < lm85_range_map[0] ) { 196 return 0 ; 197 } else if ( range > lm85_range_map[15] ) { 198 return 15 ; 199 } else { /* find closest match */ 200 for ( i = 14 ; i >= 0 ; --i ) { 201 if ( range > lm85_range_map[i] ) { /* range bracketed */ 202 if ((lm85_range_map[i+1] - range) < 203 (range - lm85_range_map[i])) { 204 i++; 205 break; 206 } 207 break; 208 } 209 } 210 } 211 return( i & 0x0f ); 212 } 213 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f]) 214 215 /* These are the Acoustic Enhancement, or Temperature smoothing encodings 216 * NOTE: The enable/disable bit is INCLUDED in these encodings as the 217 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value 218 * is ignored, or set to 0. 219 */ 220 /* These are the PWM frequency encodings */ 221 static int lm85_freq_map[] = { /* .1 Hz */ 222 100, 150, 230, 300, 380, 470, 620, 940 223 }; 224 static int FREQ_TO_REG( int freq ) 225 { 226 int i; 227 228 if( freq >= lm85_freq_map[7] ) { return 7 ; } 229 for( i = 0 ; i < 7 ; ++i ) 230 if( freq <= lm85_freq_map[i] ) 231 break ; 232 return( i & 0x07 ); 233 } 234 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07]) 235 236 /* Since we can't use strings, I'm abusing these numbers 237 * to stand in for the following meanings: 238 * 1 -- PWM responds to Zone 1 239 * 2 -- PWM responds to Zone 2 240 * 3 -- PWM responds to Zone 3 241 * 23 -- PWM responds to the higher temp of Zone 2 or 3 242 * 123 -- PWM responds to highest of Zone 1, 2, or 3 243 * 0 -- PWM is always at 0% (ie, off) 244 * -1 -- PWM is always at 100% 245 * -2 -- PWM responds to manual control 246 */ 247 248 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 }; 249 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07]) 250 251 static int ZONE_TO_REG( int zone ) 252 { 253 int i; 254 255 for( i = 0 ; i <= 7 ; ++i ) 256 if( zone == lm85_zone_map[i] ) 257 break ; 258 if( i > 7 ) /* Not found. */ 259 i = 3; /* Always 100% */ 260 return( (i & 0x07)<<5 ); 261 } 262 263 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15)) 264 #define HYST_FROM_REG(val) ((val)*1000) 265 266 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127)) 267 #define OFFSET_FROM_REG(val) ((val)*25) 268 269 #define PPR_MASK(fan) (0x03<<(fan *2)) 270 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2)) 271 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1) 272 273 /* Chip sampling rates 274 * 275 * Some sensors are not updated more frequently than once per second 276 * so it doesn't make sense to read them more often than that. 277 * We cache the results and return the saved data if the driver 278 * is called again before a second has elapsed. 279 * 280 * Also, there is significant configuration data for this chip 281 * given the automatic PWM fan control that is possible. There 282 * are about 47 bytes of config data to only 22 bytes of actual 283 * readings. So, we keep the config data up to date in the cache 284 * when it is written and only sample it once every 1 *minute* 285 */ 286 #define LM85_DATA_INTERVAL (HZ + HZ / 2) 287 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ) 288 289 /* LM85 can automatically adjust fan speeds based on temperature 290 * This structure encapsulates an entire Zone config. There are 291 * three zones (one for each temperature input) on the lm85 292 */ 293 struct lm85_zone { 294 s8 limit; /* Low temp limit */ 295 u8 hyst; /* Low limit hysteresis. (0-15) */ 296 u8 range; /* Temp range, encoded */ 297 s8 critical; /* "All fans ON" temp limit */ 298 u8 off_desired; /* Actual "off" temperature specified. Preserved 299 * to prevent "drift" as other autofan control 300 * values change. 301 */ 302 u8 max_desired; /* Actual "max" temperature specified. Preserved 303 * to prevent "drift" as other autofan control 304 * values change. 305 */ 306 }; 307 308 struct lm85_autofan { 309 u8 config; /* Register value */ 310 u8 freq; /* PWM frequency, encoded */ 311 u8 min_pwm; /* Minimum PWM value, encoded */ 312 u8 min_off; /* Min PWM or OFF below "limit", flag */ 313 }; 314 315 /* For each registered chip, we need to keep some data in memory. 316 The structure is dynamically allocated. */ 317 struct lm85_data { 318 struct i2c_client client; 319 struct device *hwmon_dev; 320 enum chips type; 321 322 struct mutex update_lock; 323 int valid; /* !=0 if following fields are valid */ 324 unsigned long last_reading; /* In jiffies */ 325 unsigned long last_config; /* In jiffies */ 326 327 u8 in[8]; /* Register value */ 328 u8 in_max[8]; /* Register value */ 329 u8 in_min[8]; /* Register value */ 330 s8 temp[3]; /* Register value */ 331 s8 temp_min[3]; /* Register value */ 332 s8 temp_max[3]; /* Register value */ 333 s8 temp_offset[3]; /* Register value */ 334 u16 fan[4]; /* Register value */ 335 u16 fan_min[4]; /* Register value */ 336 u8 pwm[3]; /* Register value */ 337 u8 spinup_ctl; /* Register encoding, combined */ 338 u8 tach_mode; /* Register encoding, combined */ 339 u8 temp_ext[3]; /* Decoded values */ 340 u8 in_ext[8]; /* Decoded values */ 341 u8 fan_ppr; /* Register value */ 342 u8 smooth[3]; /* Register encoding */ 343 u8 vid; /* Register value */ 344 u8 vrm; /* VRM version */ 345 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */ 346 u8 oppoint[3]; /* Register value */ 347 u16 tmin_ctl; /* Register value */ 348 unsigned long therm_total; /* Cummulative therm count */ 349 u8 therm_limit; /* Register value */ 350 u32 alarms; /* Register encoding, combined */ 351 struct lm85_autofan autofan[3]; 352 struct lm85_zone zone[3]; 353 }; 354 355 static int lm85_attach_adapter(struct i2c_adapter *adapter); 356 static int lm85_detect(struct i2c_adapter *adapter, int address, 357 int kind); 358 static int lm85_detach_client(struct i2c_client *client); 359 360 static int lm85_read_value(struct i2c_client *client, u8 reg); 361 static int lm85_write_value(struct i2c_client *client, u8 reg, int value); 362 static struct lm85_data *lm85_update_device(struct device *dev); 363 static void lm85_init_client(struct i2c_client *client); 364 365 366 static struct i2c_driver lm85_driver = { 367 .driver = { 368 .name = "lm85", 369 }, 370 .id = I2C_DRIVERID_LM85, 371 .attach_adapter = lm85_attach_adapter, 372 .detach_client = lm85_detach_client, 373 }; 374 375 376 /* 4 Fans */ 377 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, 378 char *buf) 379 { 380 int nr = to_sensor_dev_attr(attr)->index; 381 struct lm85_data *data = lm85_update_device(dev); 382 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) ); 383 } 384 385 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, 386 char *buf) 387 { 388 int nr = to_sensor_dev_attr(attr)->index; 389 struct lm85_data *data = lm85_update_device(dev); 390 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) ); 391 } 392 393 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 394 const char *buf, size_t count) 395 { 396 int nr = to_sensor_dev_attr(attr)->index; 397 struct i2c_client *client = to_i2c_client(dev); 398 struct lm85_data *data = i2c_get_clientdata(client); 399 unsigned long val = simple_strtoul(buf, NULL, 10); 400 401 mutex_lock(&data->update_lock); 402 data->fan_min[nr] = FAN_TO_REG(val); 403 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 404 mutex_unlock(&data->update_lock); 405 return count; 406 } 407 408 #define show_fan_offset(offset) \ 409 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 410 show_fan, NULL, offset - 1); \ 411 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 412 show_fan_min, set_fan_min, offset - 1) 413 414 show_fan_offset(1); 415 show_fan_offset(2); 416 show_fan_offset(3); 417 show_fan_offset(4); 418 419 /* vid, vrm, alarms */ 420 421 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) 422 { 423 struct lm85_data *data = lm85_update_device(dev); 424 int vid; 425 426 if (data->type == adt7463 && (data->vid & 0x80)) { 427 /* 6-pin VID (VRM 10) */ 428 vid = vid_from_reg(data->vid & 0x3f, data->vrm); 429 } else { 430 /* 5-pin VID (VRM 9) */ 431 vid = vid_from_reg(data->vid & 0x1f, data->vrm); 432 } 433 434 return sprintf(buf, "%d\n", vid); 435 } 436 437 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 438 439 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) 440 { 441 struct lm85_data *data = dev_get_drvdata(dev); 442 return sprintf(buf, "%ld\n", (long) data->vrm); 443 } 444 445 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 446 { 447 struct i2c_client *client = to_i2c_client(dev); 448 struct lm85_data *data = i2c_get_clientdata(client); 449 u32 val; 450 451 val = simple_strtoul(buf, NULL, 10); 452 data->vrm = val; 453 return count; 454 } 455 456 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 457 458 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf) 459 { 460 struct lm85_data *data = lm85_update_device(dev); 461 return sprintf(buf, "%u\n", data->alarms); 462 } 463 464 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 465 466 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 467 char *buf) 468 { 469 int nr = to_sensor_dev_attr(attr)->index; 470 struct lm85_data *data = lm85_update_device(dev); 471 return sprintf(buf, "%u\n", (data->alarms >> nr) & 1); 472 } 473 474 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 475 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 476 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 477 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 478 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 479 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18); 480 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16); 481 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17); 482 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 483 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14); 484 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 485 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6); 486 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 487 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10); 488 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11); 489 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12); 490 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13); 491 492 /* pwm */ 493 494 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, 495 char *buf) 496 { 497 int nr = to_sensor_dev_attr(attr)->index; 498 struct lm85_data *data = lm85_update_device(dev); 499 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) ); 500 } 501 502 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, 503 const char *buf, size_t count) 504 { 505 int nr = to_sensor_dev_attr(attr)->index; 506 struct i2c_client *client = to_i2c_client(dev); 507 struct lm85_data *data = i2c_get_clientdata(client); 508 long val = simple_strtol(buf, NULL, 10); 509 510 mutex_lock(&data->update_lock); 511 data->pwm[nr] = PWM_TO_REG(val); 512 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 513 mutex_unlock(&data->update_lock); 514 return count; 515 } 516 517 static ssize_t show_pwm_enable(struct device *dev, struct device_attribute 518 *attr, char *buf) 519 { 520 int nr = to_sensor_dev_attr(attr)->index; 521 struct lm85_data *data = lm85_update_device(dev); 522 int pwm_zone; 523 524 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 525 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) ); 526 } 527 528 #define show_pwm_reg(offset) \ 529 static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 530 show_pwm, set_pwm, offset - 1); \ 531 static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \ 532 show_pwm_enable, NULL, offset - 1) 533 534 show_pwm_reg(1); 535 show_pwm_reg(2); 536 show_pwm_reg(3); 537 538 /* Voltages */ 539 540 static ssize_t show_in(struct device *dev, struct device_attribute *attr, 541 char *buf) 542 { 543 int nr = to_sensor_dev_attr(attr)->index; 544 struct lm85_data *data = lm85_update_device(dev); 545 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr, 546 data->in[nr], 547 data->in_ext[nr])); 548 } 549 550 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, 551 char *buf) 552 { 553 int nr = to_sensor_dev_attr(attr)->index; 554 struct lm85_data *data = lm85_update_device(dev); 555 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) ); 556 } 557 558 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 559 const char *buf, size_t count) 560 { 561 int nr = to_sensor_dev_attr(attr)->index; 562 struct i2c_client *client = to_i2c_client(dev); 563 struct lm85_data *data = i2c_get_clientdata(client); 564 long val = simple_strtol(buf, NULL, 10); 565 566 mutex_lock(&data->update_lock); 567 data->in_min[nr] = INS_TO_REG(nr, val); 568 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 569 mutex_unlock(&data->update_lock); 570 return count; 571 } 572 573 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, 574 char *buf) 575 { 576 int nr = to_sensor_dev_attr(attr)->index; 577 struct lm85_data *data = lm85_update_device(dev); 578 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) ); 579 } 580 581 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 582 const char *buf, size_t count) 583 { 584 int nr = to_sensor_dev_attr(attr)->index; 585 struct i2c_client *client = to_i2c_client(dev); 586 struct lm85_data *data = i2c_get_clientdata(client); 587 long val = simple_strtol(buf, NULL, 10); 588 589 mutex_lock(&data->update_lock); 590 data->in_max[nr] = INS_TO_REG(nr, val); 591 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 592 mutex_unlock(&data->update_lock); 593 return count; 594 } 595 596 #define show_in_reg(offset) \ 597 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 598 show_in, NULL, offset); \ 599 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 600 show_in_min, set_in_min, offset); \ 601 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 602 show_in_max, set_in_max, offset) 603 604 show_in_reg(0); 605 show_in_reg(1); 606 show_in_reg(2); 607 show_in_reg(3); 608 show_in_reg(4); 609 show_in_reg(5); 610 show_in_reg(6); 611 show_in_reg(7); 612 613 /* Temps */ 614 615 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, 616 char *buf) 617 { 618 int nr = to_sensor_dev_attr(attr)->index; 619 struct lm85_data *data = lm85_update_device(dev); 620 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr], 621 data->temp_ext[nr])); 622 } 623 624 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, 625 char *buf) 626 { 627 int nr = to_sensor_dev_attr(attr)->index; 628 struct lm85_data *data = lm85_update_device(dev); 629 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) ); 630 } 631 632 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, 633 const char *buf, size_t count) 634 { 635 int nr = to_sensor_dev_attr(attr)->index; 636 struct i2c_client *client = to_i2c_client(dev); 637 struct lm85_data *data = i2c_get_clientdata(client); 638 long val = simple_strtol(buf, NULL, 10); 639 640 mutex_lock(&data->update_lock); 641 data->temp_min[nr] = TEMP_TO_REG(val); 642 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 643 mutex_unlock(&data->update_lock); 644 return count; 645 } 646 647 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, 648 char *buf) 649 { 650 int nr = to_sensor_dev_attr(attr)->index; 651 struct lm85_data *data = lm85_update_device(dev); 652 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) ); 653 } 654 655 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 656 const char *buf, size_t count) 657 { 658 int nr = to_sensor_dev_attr(attr)->index; 659 struct i2c_client *client = to_i2c_client(dev); 660 struct lm85_data *data = i2c_get_clientdata(client); 661 long val = simple_strtol(buf, NULL, 10); 662 663 mutex_lock(&data->update_lock); 664 data->temp_max[nr] = TEMP_TO_REG(val); 665 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 666 mutex_unlock(&data->update_lock); 667 return count; 668 } 669 670 #define show_temp_reg(offset) \ 671 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 672 show_temp, NULL, offset - 1); \ 673 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 674 show_temp_min, set_temp_min, offset - 1); \ 675 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 676 show_temp_max, set_temp_max, offset - 1); 677 678 show_temp_reg(1); 679 show_temp_reg(2); 680 show_temp_reg(3); 681 682 683 /* Automatic PWM control */ 684 685 static ssize_t show_pwm_auto_channels(struct device *dev, 686 struct device_attribute *attr, 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", ZONE_FROM_REG(data->autofan[nr].config)); 691 } 692 693 static ssize_t set_pwm_auto_channels(struct device *dev, 694 struct device_attribute *attr, 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 mutex_lock(&data->update_lock); 702 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 703 | ZONE_TO_REG(val) ; 704 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 705 data->autofan[nr].config); 706 mutex_unlock(&data->update_lock); 707 return count; 708 } 709 710 static ssize_t show_pwm_auto_pwm_min(struct device *dev, 711 struct device_attribute *attr, char *buf) 712 { 713 int nr = to_sensor_dev_attr(attr)->index; 714 struct lm85_data *data = lm85_update_device(dev); 715 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 716 } 717 718 static ssize_t set_pwm_auto_pwm_min(struct device *dev, 719 struct device_attribute *attr, const char *buf, size_t count) 720 { 721 int nr = to_sensor_dev_attr(attr)->index; 722 struct i2c_client *client = to_i2c_client(dev); 723 struct lm85_data *data = i2c_get_clientdata(client); 724 long val = simple_strtol(buf, NULL, 10); 725 726 mutex_lock(&data->update_lock); 727 data->autofan[nr].min_pwm = PWM_TO_REG(val); 728 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 729 data->autofan[nr].min_pwm); 730 mutex_unlock(&data->update_lock); 731 return count; 732 } 733 734 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, 735 struct device_attribute *attr, char *buf) 736 { 737 int nr = to_sensor_dev_attr(attr)->index; 738 struct lm85_data *data = lm85_update_device(dev); 739 return sprintf(buf,"%d\n", data->autofan[nr].min_off); 740 } 741 742 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, 743 struct device_attribute *attr, const char *buf, size_t count) 744 { 745 int nr = to_sensor_dev_attr(attr)->index; 746 struct i2c_client *client = to_i2c_client(dev); 747 struct lm85_data *data = i2c_get_clientdata(client); 748 long val = simple_strtol(buf, NULL, 10); 749 750 mutex_lock(&data->update_lock); 751 data->autofan[nr].min_off = val; 752 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0] 753 | data->syncpwm3 754 | (data->autofan[0].min_off ? 0x20 : 0) 755 | (data->autofan[1].min_off ? 0x40 : 0) 756 | (data->autofan[2].min_off ? 0x80 : 0) 757 ); 758 mutex_unlock(&data->update_lock); 759 return count; 760 } 761 762 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, 763 struct device_attribute *attr, char *buf) 764 { 765 int nr = to_sensor_dev_attr(attr)->index; 766 struct lm85_data *data = lm85_update_device(dev); 767 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq)); 768 } 769 770 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, 771 struct device_attribute *attr, const char *buf, size_t count) 772 { 773 int nr = to_sensor_dev_attr(attr)->index; 774 struct i2c_client *client = to_i2c_client(dev); 775 struct lm85_data *data = i2c_get_clientdata(client); 776 long val = simple_strtol(buf, NULL, 10); 777 778 mutex_lock(&data->update_lock); 779 data->autofan[nr].freq = FREQ_TO_REG(val); 780 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 781 (data->zone[nr].range << 4) 782 | data->autofan[nr].freq 783 ); 784 mutex_unlock(&data->update_lock); 785 return count; 786 } 787 788 #define pwm_auto(offset) \ 789 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \ 790 S_IRUGO | S_IWUSR, show_pwm_auto_channels, \ 791 set_pwm_auto_channels, offset - 1); \ 792 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \ 793 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \ 794 set_pwm_auto_pwm_min, offset - 1); \ 795 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \ 796 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \ 797 set_pwm_auto_pwm_minctl, offset - 1); \ 798 static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_freq, \ 799 S_IRUGO | S_IWUSR, show_pwm_auto_pwm_freq, \ 800 set_pwm_auto_pwm_freq, offset - 1); 801 802 pwm_auto(1); 803 pwm_auto(2); 804 pwm_auto(3); 805 806 /* Temperature settings for automatic PWM control */ 807 808 static ssize_t show_temp_auto_temp_off(struct device *dev, 809 struct device_attribute *attr, char *buf) 810 { 811 int nr = to_sensor_dev_attr(attr)->index; 812 struct lm85_data *data = lm85_update_device(dev); 813 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 814 HYST_FROM_REG(data->zone[nr].hyst)); 815 } 816 817 static ssize_t set_temp_auto_temp_off(struct device *dev, 818 struct device_attribute *attr, const char *buf, size_t count) 819 { 820 int nr = to_sensor_dev_attr(attr)->index; 821 struct i2c_client *client = to_i2c_client(dev); 822 struct lm85_data *data = i2c_get_clientdata(client); 823 int min; 824 long val = simple_strtol(buf, NULL, 10); 825 826 mutex_lock(&data->update_lock); 827 min = TEMP_FROM_REG(data->zone[nr].limit); 828 data->zone[nr].off_desired = TEMP_TO_REG(val); 829 data->zone[nr].hyst = HYST_TO_REG(min - val); 830 if ( nr == 0 || nr == 1 ) { 831 lm85_write_value(client, LM85_REG_AFAN_HYST1, 832 (data->zone[0].hyst << 4) 833 | data->zone[1].hyst 834 ); 835 } else { 836 lm85_write_value(client, LM85_REG_AFAN_HYST2, 837 (data->zone[2].hyst << 4) 838 ); 839 } 840 mutex_unlock(&data->update_lock); 841 return count; 842 } 843 844 static ssize_t show_temp_auto_temp_min(struct device *dev, 845 struct device_attribute *attr, char *buf) 846 { 847 int nr = to_sensor_dev_attr(attr)->index; 848 struct lm85_data *data = lm85_update_device(dev); 849 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) ); 850 } 851 852 static ssize_t set_temp_auto_temp_min(struct device *dev, 853 struct device_attribute *attr, const char *buf, size_t count) 854 { 855 int nr = to_sensor_dev_attr(attr)->index; 856 struct i2c_client *client = to_i2c_client(dev); 857 struct lm85_data *data = i2c_get_clientdata(client); 858 long val = simple_strtol(buf, NULL, 10); 859 860 mutex_lock(&data->update_lock); 861 data->zone[nr].limit = TEMP_TO_REG(val); 862 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 863 data->zone[nr].limit); 864 865 /* Update temp_auto_max and temp_auto_range */ 866 data->zone[nr].range = RANGE_TO_REG( 867 TEMP_FROM_REG(data->zone[nr].max_desired) - 868 TEMP_FROM_REG(data->zone[nr].limit)); 869 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 870 ((data->zone[nr].range & 0x0f) << 4) 871 | (data->autofan[nr].freq & 0x07)); 872 873 /* Update temp_auto_hyst and temp_auto_off */ 874 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 875 data->zone[nr].limit) - TEMP_FROM_REG( 876 data->zone[nr].off_desired)); 877 if ( nr == 0 || nr == 1 ) { 878 lm85_write_value(client, LM85_REG_AFAN_HYST1, 879 (data->zone[0].hyst << 4) 880 | data->zone[1].hyst 881 ); 882 } else { 883 lm85_write_value(client, LM85_REG_AFAN_HYST2, 884 (data->zone[2].hyst << 4) 885 ); 886 } 887 mutex_unlock(&data->update_lock); 888 return count; 889 } 890 891 static ssize_t show_temp_auto_temp_max(struct device *dev, 892 struct device_attribute *attr, char *buf) 893 { 894 int nr = to_sensor_dev_attr(attr)->index; 895 struct lm85_data *data = lm85_update_device(dev); 896 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 897 RANGE_FROM_REG(data->zone[nr].range)); 898 } 899 900 static ssize_t set_temp_auto_temp_max(struct device *dev, 901 struct device_attribute *attr, const char *buf, size_t count) 902 { 903 int nr = to_sensor_dev_attr(attr)->index; 904 struct i2c_client *client = to_i2c_client(dev); 905 struct lm85_data *data = i2c_get_clientdata(client); 906 int min; 907 long val = simple_strtol(buf, NULL, 10); 908 909 mutex_lock(&data->update_lock); 910 min = TEMP_FROM_REG(data->zone[nr].limit); 911 data->zone[nr].max_desired = TEMP_TO_REG(val); 912 data->zone[nr].range = RANGE_TO_REG( 913 val - min); 914 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 915 ((data->zone[nr].range & 0x0f) << 4) 916 | (data->autofan[nr].freq & 0x07)); 917 mutex_unlock(&data->update_lock); 918 return count; 919 } 920 921 static ssize_t show_temp_auto_temp_crit(struct device *dev, 922 struct device_attribute *attr, char *buf) 923 { 924 int nr = to_sensor_dev_attr(attr)->index; 925 struct lm85_data *data = lm85_update_device(dev); 926 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 927 } 928 929 static ssize_t set_temp_auto_temp_crit(struct device *dev, 930 struct device_attribute *attr,const char *buf, size_t count) 931 { 932 int nr = to_sensor_dev_attr(attr)->index; 933 struct i2c_client *client = to_i2c_client(dev); 934 struct lm85_data *data = i2c_get_clientdata(client); 935 long val = simple_strtol(buf, NULL, 10); 936 937 mutex_lock(&data->update_lock); 938 data->zone[nr].critical = TEMP_TO_REG(val); 939 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 940 data->zone[nr].critical); 941 mutex_unlock(&data->update_lock); 942 return count; 943 } 944 945 #define temp_auto(offset) \ 946 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \ 947 S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \ 948 set_temp_auto_temp_off, offset - 1); \ 949 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \ 950 S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \ 951 set_temp_auto_temp_min, offset - 1); \ 952 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \ 953 S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \ 954 set_temp_auto_temp_max, offset - 1); \ 955 static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \ 956 S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \ 957 set_temp_auto_temp_crit, offset - 1); 958 959 temp_auto(1); 960 temp_auto(2); 961 temp_auto(3); 962 963 static int lm85_attach_adapter(struct i2c_adapter *adapter) 964 { 965 if (!(adapter->class & I2C_CLASS_HWMON)) 966 return 0; 967 return i2c_probe(adapter, &addr_data, lm85_detect); 968 } 969 970 static struct attribute *lm85_attributes[] = { 971 &sensor_dev_attr_fan1_input.dev_attr.attr, 972 &sensor_dev_attr_fan2_input.dev_attr.attr, 973 &sensor_dev_attr_fan3_input.dev_attr.attr, 974 &sensor_dev_attr_fan4_input.dev_attr.attr, 975 &sensor_dev_attr_fan1_min.dev_attr.attr, 976 &sensor_dev_attr_fan2_min.dev_attr.attr, 977 &sensor_dev_attr_fan3_min.dev_attr.attr, 978 &sensor_dev_attr_fan4_min.dev_attr.attr, 979 &sensor_dev_attr_fan1_alarm.dev_attr.attr, 980 &sensor_dev_attr_fan2_alarm.dev_attr.attr, 981 &sensor_dev_attr_fan3_alarm.dev_attr.attr, 982 &sensor_dev_attr_fan4_alarm.dev_attr.attr, 983 984 &sensor_dev_attr_pwm1.dev_attr.attr, 985 &sensor_dev_attr_pwm2.dev_attr.attr, 986 &sensor_dev_attr_pwm3.dev_attr.attr, 987 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 988 &sensor_dev_attr_pwm2_enable.dev_attr.attr, 989 &sensor_dev_attr_pwm3_enable.dev_attr.attr, 990 991 &sensor_dev_attr_in0_input.dev_attr.attr, 992 &sensor_dev_attr_in1_input.dev_attr.attr, 993 &sensor_dev_attr_in2_input.dev_attr.attr, 994 &sensor_dev_attr_in3_input.dev_attr.attr, 995 &sensor_dev_attr_in0_min.dev_attr.attr, 996 &sensor_dev_attr_in1_min.dev_attr.attr, 997 &sensor_dev_attr_in2_min.dev_attr.attr, 998 &sensor_dev_attr_in3_min.dev_attr.attr, 999 &sensor_dev_attr_in0_max.dev_attr.attr, 1000 &sensor_dev_attr_in1_max.dev_attr.attr, 1001 &sensor_dev_attr_in2_max.dev_attr.attr, 1002 &sensor_dev_attr_in3_max.dev_attr.attr, 1003 &sensor_dev_attr_in0_alarm.dev_attr.attr, 1004 &sensor_dev_attr_in1_alarm.dev_attr.attr, 1005 &sensor_dev_attr_in2_alarm.dev_attr.attr, 1006 &sensor_dev_attr_in3_alarm.dev_attr.attr, 1007 1008 &sensor_dev_attr_temp1_input.dev_attr.attr, 1009 &sensor_dev_attr_temp2_input.dev_attr.attr, 1010 &sensor_dev_attr_temp3_input.dev_attr.attr, 1011 &sensor_dev_attr_temp1_min.dev_attr.attr, 1012 &sensor_dev_attr_temp2_min.dev_attr.attr, 1013 &sensor_dev_attr_temp3_min.dev_attr.attr, 1014 &sensor_dev_attr_temp1_max.dev_attr.attr, 1015 &sensor_dev_attr_temp2_max.dev_attr.attr, 1016 &sensor_dev_attr_temp3_max.dev_attr.attr, 1017 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 1018 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 1019 &sensor_dev_attr_temp3_alarm.dev_attr.attr, 1020 &sensor_dev_attr_temp1_fault.dev_attr.attr, 1021 &sensor_dev_attr_temp3_fault.dev_attr.attr, 1022 1023 &sensor_dev_attr_pwm1_auto_channels.dev_attr.attr, 1024 &sensor_dev_attr_pwm2_auto_channels.dev_attr.attr, 1025 &sensor_dev_attr_pwm3_auto_channels.dev_attr.attr, 1026 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr, 1027 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr, 1028 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr, 1029 &sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr, 1030 &sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr, 1031 &sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr, 1032 &sensor_dev_attr_pwm1_auto_pwm_freq.dev_attr.attr, 1033 &sensor_dev_attr_pwm2_auto_pwm_freq.dev_attr.attr, 1034 &sensor_dev_attr_pwm3_auto_pwm_freq.dev_attr.attr, 1035 1036 &sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr, 1037 &sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr, 1038 &sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr, 1039 &sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr, 1040 &sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr, 1041 &sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr, 1042 &sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr, 1043 &sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr, 1044 &sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr, 1045 &sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr, 1046 &sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr, 1047 &sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr, 1048 1049 &dev_attr_vrm.attr, 1050 &dev_attr_cpu0_vid.attr, 1051 &dev_attr_alarms.attr, 1052 NULL 1053 }; 1054 1055 static const struct attribute_group lm85_group = { 1056 .attrs = lm85_attributes, 1057 }; 1058 1059 static struct attribute *lm85_attributes_in4[] = { 1060 &sensor_dev_attr_in4_input.dev_attr.attr, 1061 &sensor_dev_attr_in4_min.dev_attr.attr, 1062 &sensor_dev_attr_in4_max.dev_attr.attr, 1063 &sensor_dev_attr_in4_alarm.dev_attr.attr, 1064 NULL 1065 }; 1066 1067 static const struct attribute_group lm85_group_in4 = { 1068 .attrs = lm85_attributes_in4, 1069 }; 1070 1071 static struct attribute *lm85_attributes_in567[] = { 1072 &sensor_dev_attr_in5_input.dev_attr.attr, 1073 &sensor_dev_attr_in6_input.dev_attr.attr, 1074 &sensor_dev_attr_in7_input.dev_attr.attr, 1075 &sensor_dev_attr_in5_min.dev_attr.attr, 1076 &sensor_dev_attr_in6_min.dev_attr.attr, 1077 &sensor_dev_attr_in7_min.dev_attr.attr, 1078 &sensor_dev_attr_in5_max.dev_attr.attr, 1079 &sensor_dev_attr_in6_max.dev_attr.attr, 1080 &sensor_dev_attr_in7_max.dev_attr.attr, 1081 &sensor_dev_attr_in5_alarm.dev_attr.attr, 1082 &sensor_dev_attr_in6_alarm.dev_attr.attr, 1083 &sensor_dev_attr_in7_alarm.dev_attr.attr, 1084 NULL 1085 }; 1086 1087 static const struct attribute_group lm85_group_in567 = { 1088 .attrs = lm85_attributes_in567, 1089 }; 1090 1091 static int lm85_detect(struct i2c_adapter *adapter, int address, 1092 int kind) 1093 { 1094 int company, verstep ; 1095 struct i2c_client *new_client = NULL; 1096 struct lm85_data *data; 1097 int err = 0; 1098 const char *type_name = ""; 1099 1100 if (!i2c_check_functionality(adapter, 1101 I2C_FUNC_SMBUS_BYTE_DATA)) { 1102 /* We need to be able to do byte I/O */ 1103 goto ERROR0 ; 1104 }; 1105 1106 /* OK. For now, we presume we have a valid client. We now create the 1107 client structure, even though we cannot fill it completely yet. 1108 But it allows us to access lm85_{read,write}_value. */ 1109 1110 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) { 1111 err = -ENOMEM; 1112 goto ERROR0; 1113 } 1114 1115 new_client = &data->client; 1116 i2c_set_clientdata(new_client, data); 1117 new_client->addr = address; 1118 new_client->adapter = adapter; 1119 new_client->driver = &lm85_driver; 1120 new_client->flags = 0; 1121 1122 /* Now, we do the remaining detection. */ 1123 1124 company = lm85_read_value(new_client, LM85_REG_COMPANY); 1125 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP); 1126 1127 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with" 1128 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1129 i2c_adapter_id(new_client->adapter), new_client->addr, 1130 company, verstep); 1131 1132 /* If auto-detecting, Determine the chip type. */ 1133 if (kind <= 0) { 1134 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n", 1135 i2c_adapter_id(adapter), address ); 1136 if( company == LM85_COMPANY_NATIONAL 1137 && verstep == LM85_VERSTEP_LM85C ) { 1138 kind = lm85c ; 1139 } else if( company == LM85_COMPANY_NATIONAL 1140 && verstep == LM85_VERSTEP_LM85B ) { 1141 kind = lm85b ; 1142 } else if( company == LM85_COMPANY_NATIONAL 1143 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1144 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1145 " Defaulting to LM85.\n", verstep); 1146 kind = any_chip ; 1147 } else if( company == LM85_COMPANY_ANALOG_DEV 1148 && verstep == LM85_VERSTEP_ADM1027 ) { 1149 kind = adm1027 ; 1150 } else if( company == LM85_COMPANY_ANALOG_DEV 1151 && (verstep == LM85_VERSTEP_ADT7463 1152 || verstep == LM85_VERSTEP_ADT7463C) ) { 1153 kind = adt7463 ; 1154 } else if( company == LM85_COMPANY_ANALOG_DEV 1155 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1156 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1157 " Defaulting to Generic LM85.\n", verstep ); 1158 kind = any_chip ; 1159 } else if( company == LM85_COMPANY_SMSC 1160 && (verstep == LM85_VERSTEP_EMC6D100_A0 1161 || verstep == LM85_VERSTEP_EMC6D100_A1) ) { 1162 /* Unfortunately, we can't tell a '100 from a '101 1163 * from the registers. Since a '101 is a '100 1164 * in a package with fewer pins and therefore no 1165 * 3.3V, 1.5V or 1.8V inputs, perhaps if those 1166 * inputs read 0, then it's a '101. 1167 */ 1168 kind = emc6d100 ; 1169 } else if( company == LM85_COMPANY_SMSC 1170 && verstep == LM85_VERSTEP_EMC6D102) { 1171 kind = emc6d102 ; 1172 } else if( company == LM85_COMPANY_SMSC 1173 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1174 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n"); 1175 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x" 1176 " Defaulting to Generic LM85.\n", verstep ); 1177 kind = any_chip ; 1178 } else if( kind == any_chip 1179 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1180 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n"); 1181 /* Leave kind as "any_chip" */ 1182 } else { 1183 dev_dbg(&adapter->dev, "Autodetection failed\n"); 1184 /* Not an LM85 ... */ 1185 if( kind == any_chip ) { /* User used force=x,y */ 1186 dev_err(&adapter->dev, "Generic LM85 Version 6 not" 1187 " found at %d,0x%02x. Try force_lm85c.\n", 1188 i2c_adapter_id(adapter), address ); 1189 } 1190 err = 0 ; 1191 goto ERROR1; 1192 } 1193 } 1194 1195 /* Fill in the chip specific driver values */ 1196 if ( kind == any_chip ) { 1197 type_name = "lm85"; 1198 } else if ( kind == lm85b ) { 1199 type_name = "lm85b"; 1200 } else if ( kind == lm85c ) { 1201 type_name = "lm85c"; 1202 } else if ( kind == adm1027 ) { 1203 type_name = "adm1027"; 1204 } else if ( kind == adt7463 ) { 1205 type_name = "adt7463"; 1206 } else if ( kind == emc6d100){ 1207 type_name = "emc6d100"; 1208 } else if ( kind == emc6d102 ) { 1209 type_name = "emc6d102"; 1210 } 1211 strlcpy(new_client->name, type_name, I2C_NAME_SIZE); 1212 1213 /* Fill in the remaining client fields */ 1214 data->type = kind; 1215 data->valid = 0; 1216 mutex_init(&data->update_lock); 1217 1218 /* Tell the I2C layer a new client has arrived */ 1219 if ((err = i2c_attach_client(new_client))) 1220 goto ERROR1; 1221 1222 /* Set the VRM version */ 1223 data->vrm = vid_which_vrm(); 1224 1225 /* Initialize the LM85 chip */ 1226 lm85_init_client(new_client); 1227 1228 /* Register sysfs hooks */ 1229 if ((err = sysfs_create_group(&new_client->dev.kobj, &lm85_group))) 1230 goto ERROR2; 1231 1232 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used 1233 as a sixth digital VID input rather than an analog input. */ 1234 data->vid = lm85_read_value(new_client, LM85_REG_VID); 1235 if (!(kind == adt7463 && (data->vid & 0x80))) 1236 if ((err = sysfs_create_group(&new_client->dev.kobj, 1237 &lm85_group_in4))) 1238 goto ERROR3; 1239 1240 /* The EMC6D100 has 3 additional voltage inputs */ 1241 if (kind == emc6d100) 1242 if ((err = sysfs_create_group(&new_client->dev.kobj, 1243 &lm85_group_in567))) 1244 goto ERROR3; 1245 1246 data->hwmon_dev = hwmon_device_register(&new_client->dev); 1247 if (IS_ERR(data->hwmon_dev)) { 1248 err = PTR_ERR(data->hwmon_dev); 1249 goto ERROR3; 1250 } 1251 1252 return 0; 1253 1254 /* Error out and cleanup code */ 1255 ERROR3: 1256 sysfs_remove_group(&new_client->dev.kobj, &lm85_group); 1257 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in4); 1258 if (kind == emc6d100) 1259 sysfs_remove_group(&new_client->dev.kobj, &lm85_group_in567); 1260 ERROR2: 1261 i2c_detach_client(new_client); 1262 ERROR1: 1263 kfree(data); 1264 ERROR0: 1265 return err; 1266 } 1267 1268 static int lm85_detach_client(struct i2c_client *client) 1269 { 1270 struct lm85_data *data = i2c_get_clientdata(client); 1271 hwmon_device_unregister(data->hwmon_dev); 1272 sysfs_remove_group(&client->dev.kobj, &lm85_group); 1273 sysfs_remove_group(&client->dev.kobj, &lm85_group_in4); 1274 if (data->type == emc6d100) 1275 sysfs_remove_group(&client->dev.kobj, &lm85_group_in567); 1276 i2c_detach_client(client); 1277 kfree(data); 1278 return 0; 1279 } 1280 1281 1282 static int lm85_read_value(struct i2c_client *client, u8 reg) 1283 { 1284 int res; 1285 1286 /* What size location is it? */ 1287 switch( reg ) { 1288 case LM85_REG_FAN(0) : /* Read WORD data */ 1289 case LM85_REG_FAN(1) : 1290 case LM85_REG_FAN(2) : 1291 case LM85_REG_FAN(3) : 1292 case LM85_REG_FAN_MIN(0) : 1293 case LM85_REG_FAN_MIN(1) : 1294 case LM85_REG_FAN_MIN(2) : 1295 case LM85_REG_FAN_MIN(3) : 1296 case LM85_REG_ALARM1 : /* Read both bytes at once */ 1297 res = i2c_smbus_read_byte_data(client, reg) & 0xff ; 1298 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ; 1299 break ; 1300 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */ 1301 res = i2c_smbus_read_byte_data(client, reg) << 8 ; 1302 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ; 1303 break ; 1304 default: /* Read BYTE data */ 1305 res = i2c_smbus_read_byte_data(client, reg); 1306 break ; 1307 } 1308 1309 return res ; 1310 } 1311 1312 static int lm85_write_value(struct i2c_client *client, u8 reg, int value) 1313 { 1314 int res ; 1315 1316 switch( reg ) { 1317 case LM85_REG_FAN(0) : /* Write WORD data */ 1318 case LM85_REG_FAN(1) : 1319 case LM85_REG_FAN(2) : 1320 case LM85_REG_FAN(3) : 1321 case LM85_REG_FAN_MIN(0) : 1322 case LM85_REG_FAN_MIN(1) : 1323 case LM85_REG_FAN_MIN(2) : 1324 case LM85_REG_FAN_MIN(3) : 1325 /* NOTE: ALARM is read only, so not included here */ 1326 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ; 1327 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ; 1328 break ; 1329 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */ 1330 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff); 1331 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ; 1332 break ; 1333 default: /* Write BYTE data */ 1334 res = i2c_smbus_write_byte_data(client, reg, value); 1335 break ; 1336 } 1337 1338 return res ; 1339 } 1340 1341 static void lm85_init_client(struct i2c_client *client) 1342 { 1343 int value; 1344 struct lm85_data *data = i2c_get_clientdata(client); 1345 1346 dev_dbg(&client->dev, "Initializing device\n"); 1347 1348 /* Warn if part was not "READY" */ 1349 value = lm85_read_value(client, LM85_REG_CONFIG); 1350 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value); 1351 if( value & 0x02 ) { 1352 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n", 1353 i2c_adapter_id(client->adapter), client->addr ); 1354 }; 1355 if( ! (value & 0x04) ) { 1356 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n", 1357 i2c_adapter_id(client->adapter), client->addr ); 1358 }; 1359 if( value & 0x10 1360 && ( data->type == adm1027 1361 || data->type == adt7463 ) ) { 1362 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. " 1363 "Please report this to the lm85 maintainer.\n", 1364 i2c_adapter_id(client->adapter), client->addr ); 1365 }; 1366 1367 /* WE INTENTIONALLY make no changes to the limits, 1368 * offsets, pwms, fans and zones. If they were 1369 * configured, we don't want to mess with them. 1370 * If they weren't, the default is 100% PWM, no 1371 * control and will suffice until 'sensors -s' 1372 * can be run by the user. 1373 */ 1374 1375 /* Start monitoring */ 1376 value = lm85_read_value(client, LM85_REG_CONFIG); 1377 /* Try to clear LOCK, Set START, save everything else */ 1378 value = (value & ~ 0x02) | 0x01 ; 1379 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value); 1380 lm85_write_value(client, LM85_REG_CONFIG, value); 1381 } 1382 1383 static struct lm85_data *lm85_update_device(struct device *dev) 1384 { 1385 struct i2c_client *client = to_i2c_client(dev); 1386 struct lm85_data *data = i2c_get_clientdata(client); 1387 int i; 1388 1389 mutex_lock(&data->update_lock); 1390 1391 if ( !data->valid || 1392 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) { 1393 /* Things that change quickly */ 1394 dev_dbg(&client->dev, "Reading sensor values\n"); 1395 1396 /* Have to read extended bits first to "freeze" the 1397 * more significant bits that are read later. 1398 * There are 2 additional resolution bits per channel and we 1399 * have room for 4, so we shift them to the left. 1400 */ 1401 if ( (data->type == adm1027) || (data->type == adt7463) ) { 1402 int ext1 = lm85_read_value(client, 1403 ADM1027_REG_EXTEND_ADC1); 1404 int ext2 = lm85_read_value(client, 1405 ADM1027_REG_EXTEND_ADC2); 1406 int val = (ext1 << 8) + ext2; 1407 1408 for(i = 0; i <= 4; i++) 1409 data->in_ext[i] = ((val>>(i * 2))&0x03) << 2; 1410 1411 for(i = 0; i <= 2; i++) 1412 data->temp_ext[i] = (val>>((i + 4) * 2))&0x0c; 1413 } 1414 1415 data->vid = lm85_read_value(client, LM85_REG_VID); 1416 1417 for (i = 0; i <= 3; ++i) { 1418 data->in[i] = 1419 lm85_read_value(client, LM85_REG_IN(i)); 1420 } 1421 1422 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1423 data->in[4] = lm85_read_value(client, 1424 LM85_REG_IN(4)); 1425 } 1426 1427 for (i = 0; i <= 3; ++i) { 1428 data->fan[i] = 1429 lm85_read_value(client, LM85_REG_FAN(i)); 1430 } 1431 1432 for (i = 0; i <= 2; ++i) { 1433 data->temp[i] = 1434 lm85_read_value(client, LM85_REG_TEMP(i)); 1435 } 1436 1437 for (i = 0; i <= 2; ++i) { 1438 data->pwm[i] = 1439 lm85_read_value(client, LM85_REG_PWM(i)); 1440 } 1441 1442 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1443 1444 if ( data->type == adt7463 ) { 1445 if( data->therm_total < ULONG_MAX - 256 ) { 1446 data->therm_total += 1447 lm85_read_value(client, ADT7463_REG_THERM ); 1448 } 1449 } else if ( data->type == emc6d100 ) { 1450 /* Three more voltage sensors */ 1451 for (i = 5; i <= 7; ++i) { 1452 data->in[i] = 1453 lm85_read_value(client, EMC6D100_REG_IN(i)); 1454 } 1455 /* More alarm bits */ 1456 data->alarms |= 1457 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16; 1458 } else if (data->type == emc6d102 ) { 1459 /* Have to read LSB bits after the MSB ones because 1460 the reading of the MSB bits has frozen the 1461 LSBs (backward from the ADM1027). 1462 */ 1463 int ext1 = lm85_read_value(client, 1464 EMC6D102_REG_EXTEND_ADC1); 1465 int ext2 = lm85_read_value(client, 1466 EMC6D102_REG_EXTEND_ADC2); 1467 int ext3 = lm85_read_value(client, 1468 EMC6D102_REG_EXTEND_ADC3); 1469 int ext4 = lm85_read_value(client, 1470 EMC6D102_REG_EXTEND_ADC4); 1471 data->in_ext[0] = ext3 & 0x0f; 1472 data->in_ext[1] = ext4 & 0x0f; 1473 data->in_ext[2] = (ext4 >> 4) & 0x0f; 1474 data->in_ext[3] = (ext3 >> 4) & 0x0f; 1475 data->in_ext[4] = (ext2 >> 4) & 0x0f; 1476 1477 data->temp_ext[0] = ext1 & 0x0f; 1478 data->temp_ext[1] = ext2 & 0x0f; 1479 data->temp_ext[2] = (ext1 >> 4) & 0x0f; 1480 } 1481 1482 data->last_reading = jiffies ; 1483 }; /* last_reading */ 1484 1485 if ( !data->valid || 1486 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) { 1487 /* Things that don't change often */ 1488 dev_dbg(&client->dev, "Reading config values\n"); 1489 1490 for (i = 0; i <= 3; ++i) { 1491 data->in_min[i] = 1492 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1493 data->in_max[i] = 1494 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1495 } 1496 1497 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1498 data->in_min[4] = lm85_read_value(client, 1499 LM85_REG_IN_MIN(4)); 1500 data->in_max[4] = lm85_read_value(client, 1501 LM85_REG_IN_MAX(4)); 1502 } 1503 1504 if ( data->type == emc6d100 ) { 1505 for (i = 5; i <= 7; ++i) { 1506 data->in_min[i] = 1507 lm85_read_value(client, EMC6D100_REG_IN_MIN(i)); 1508 data->in_max[i] = 1509 lm85_read_value(client, EMC6D100_REG_IN_MAX(i)); 1510 } 1511 } 1512 1513 for (i = 0; i <= 3; ++i) { 1514 data->fan_min[i] = 1515 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1516 } 1517 1518 for (i = 0; i <= 2; ++i) { 1519 data->temp_min[i] = 1520 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1521 data->temp_max[i] = 1522 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1523 } 1524 1525 for (i = 0; i <= 2; ++i) { 1526 int val ; 1527 data->autofan[i].config = 1528 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1529 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1530 data->autofan[i].freq = val & 0x07 ; 1531 data->zone[i].range = (val >> 4) & 0x0f ; 1532 data->autofan[i].min_pwm = 1533 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1534 data->zone[i].limit = 1535 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1536 data->zone[i].critical = 1537 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1538 } 1539 1540 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1541 data->smooth[0] = i & 0x0f ; 1542 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */ 1543 data->autofan[0].min_off = (i & 0x20) != 0 ; 1544 data->autofan[1].min_off = (i & 0x40) != 0 ; 1545 data->autofan[2].min_off = (i & 0x80) != 0 ; 1546 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2); 1547 data->smooth[1] = (i>>4) & 0x0f ; 1548 data->smooth[2] = i & 0x0f ; 1549 1550 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1551 data->zone[0].hyst = (i>>4) & 0x0f ; 1552 data->zone[1].hyst = i & 0x0f ; 1553 1554 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1555 data->zone[2].hyst = (i>>4) & 0x0f ; 1556 1557 if ( (data->type == lm85b) || (data->type == lm85c) ) { 1558 data->tach_mode = lm85_read_value(client, 1559 LM85_REG_TACH_MODE ); 1560 data->spinup_ctl = lm85_read_value(client, 1561 LM85_REG_SPINUP_CTL ); 1562 } else if ( (data->type == adt7463) || (data->type == adm1027) ) { 1563 if ( data->type == adt7463 ) { 1564 for (i = 0; i <= 2; ++i) { 1565 data->oppoint[i] = lm85_read_value(client, 1566 ADT7463_REG_OPPOINT(i) ); 1567 } 1568 data->tmin_ctl = lm85_read_value(client, 1569 ADT7463_REG_TMIN_CTL1 ); 1570 data->therm_limit = lm85_read_value(client, 1571 ADT7463_REG_THERM_LIMIT ); 1572 } 1573 for (i = 0; i <= 2; ++i) { 1574 data->temp_offset[i] = lm85_read_value(client, 1575 ADM1027_REG_TEMP_OFFSET(i) ); 1576 } 1577 data->tach_mode = lm85_read_value(client, 1578 ADM1027_REG_CONFIG3 ); 1579 data->fan_ppr = lm85_read_value(client, 1580 ADM1027_REG_FAN_PPR ); 1581 } 1582 1583 data->last_config = jiffies; 1584 }; /* last_config */ 1585 1586 data->valid = 1; 1587 1588 mutex_unlock(&data->update_lock); 1589 1590 return data; 1591 } 1592 1593 1594 static int __init sm_lm85_init(void) 1595 { 1596 return i2c_add_driver(&lm85_driver); 1597 } 1598 1599 static void __exit sm_lm85_exit(void) 1600 { 1601 i2c_del_driver(&lm85_driver); 1602 } 1603 1604 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect. 1605 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with 1606 * post 2.7.0 CVS changes. 1607 */ 1608 MODULE_LICENSE("GPL"); 1609 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com"); 1610 MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1611 1612 module_init(sm_lm85_init); 1613 module_exit(sm_lm85_exit); 1614