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/err.h> 34 35 /* Addresses to scan */ 36 static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 37 38 /* Insmod parameters */ 39 I2C_CLIENT_INSMOD_6(lm85b, lm85c, adm1027, adt7463, emc6d100, emc6d102); 40 41 /* The LM85 registers */ 42 43 #define LM85_REG_IN(nr) (0x20 + (nr)) 44 #define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2) 45 #define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2) 46 47 #define LM85_REG_TEMP(nr) (0x25 + (nr)) 48 #define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2) 49 #define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2) 50 51 /* Fan speeds are LSB, MSB (2 bytes) */ 52 #define LM85_REG_FAN(nr) (0x28 + (nr) *2) 53 #define LM85_REG_FAN_MIN(nr) (0x54 + (nr) *2) 54 55 #define LM85_REG_PWM(nr) (0x30 + (nr)) 56 57 #define ADT7463_REG_OPPOINT(nr) (0x33 + (nr)) 58 59 #define ADT7463_REG_TMIN_CTL1 0x36 60 #define ADT7463_REG_TMIN_CTL2 0x37 61 62 #define LM85_REG_DEVICE 0x3d 63 #define LM85_REG_COMPANY 0x3e 64 #define LM85_REG_VERSTEP 0x3f 65 /* These are the recognized values for the above regs */ 66 #define LM85_DEVICE_ADX 0x27 67 #define LM85_COMPANY_NATIONAL 0x01 68 #define LM85_COMPANY_ANALOG_DEV 0x41 69 #define LM85_COMPANY_SMSC 0x5c 70 #define LM85_VERSTEP_VMASK 0xf0 71 #define LM85_VERSTEP_GENERIC 0x60 72 #define LM85_VERSTEP_LM85C 0x60 73 #define LM85_VERSTEP_LM85B 0x62 74 #define LM85_VERSTEP_ADM1027 0x60 75 #define LM85_VERSTEP_ADT7463 0x62 76 #define LM85_VERSTEP_ADT7463C 0x6A 77 #define LM85_VERSTEP_EMC6D100_A0 0x60 78 #define LM85_VERSTEP_EMC6D100_A1 0x61 79 #define LM85_VERSTEP_EMC6D102 0x65 80 81 #define LM85_REG_CONFIG 0x40 82 83 #define LM85_REG_ALARM1 0x41 84 #define LM85_REG_ALARM2 0x42 85 86 #define LM85_REG_VID 0x43 87 88 /* Automated FAN control */ 89 #define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr)) 90 #define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr)) 91 #define LM85_REG_AFAN_SPIKE1 0x62 92 #define LM85_REG_AFAN_SPIKE2 0x63 93 #define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr)) 94 #define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr)) 95 #define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr)) 96 #define LM85_REG_AFAN_HYST1 0x6d 97 #define LM85_REG_AFAN_HYST2 0x6e 98 99 #define LM85_REG_TACH_MODE 0x74 100 #define LM85_REG_SPINUP_CTL 0x75 101 102 #define ADM1027_REG_TEMP_OFFSET(nr) (0x70 + (nr)) 103 #define ADM1027_REG_CONFIG2 0x73 104 #define ADM1027_REG_INTMASK1 0x74 105 #define ADM1027_REG_INTMASK2 0x75 106 #define ADM1027_REG_EXTEND_ADC1 0x76 107 #define ADM1027_REG_EXTEND_ADC2 0x77 108 #define ADM1027_REG_CONFIG3 0x78 109 #define ADM1027_REG_FAN_PPR 0x7b 110 111 #define ADT7463_REG_THERM 0x79 112 #define ADT7463_REG_THERM_LIMIT 0x7A 113 114 #define EMC6D100_REG_ALARM3 0x7d 115 /* IN5, IN6 and IN7 */ 116 #define EMC6D100_REG_IN(nr) (0x70 + ((nr)-5)) 117 #define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr)-5) * 2) 118 #define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr)-5) * 2) 119 #define EMC6D102_REG_EXTEND_ADC1 0x85 120 #define EMC6D102_REG_EXTEND_ADC2 0x86 121 #define EMC6D102_REG_EXTEND_ADC3 0x87 122 #define EMC6D102_REG_EXTEND_ADC4 0x88 123 124 #define LM85_ALARM_IN0 0x0001 125 #define LM85_ALARM_IN1 0x0002 126 #define LM85_ALARM_IN2 0x0004 127 #define LM85_ALARM_IN3 0x0008 128 #define LM85_ALARM_TEMP1 0x0010 129 #define LM85_ALARM_TEMP2 0x0020 130 #define LM85_ALARM_TEMP3 0x0040 131 #define LM85_ALARM_ALARM2 0x0080 132 #define LM85_ALARM_IN4 0x0100 133 #define LM85_ALARM_RESERVED 0x0200 134 #define LM85_ALARM_FAN1 0x0400 135 #define LM85_ALARM_FAN2 0x0800 136 #define LM85_ALARM_FAN3 0x1000 137 #define LM85_ALARM_FAN4 0x2000 138 #define LM85_ALARM_TEMP1_FAULT 0x4000 139 #define LM85_ALARM_TEMP3_FAULT 0x8000 140 141 142 /* Conversions. Rounding and limit checking is only done on the TO_REG 143 variants. Note that you should be a bit careful with which arguments 144 these macros are called: arguments may be evaluated more than once. 145 */ 146 147 /* IN are scaled acording to built-in resistors */ 148 static int lm85_scaling[] = { /* .001 Volts */ 149 2500, 2250, 3300, 5000, 12000, 150 3300, 1500, 1800 /*EMC6D100*/ 151 }; 152 #define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from)) 153 154 #define INS_TO_REG(n,val) \ 155 SENSORS_LIMIT(SCALE(val,lm85_scaling[n],192),0,255) 156 157 #define INSEXT_FROM_REG(n,val,ext,scale) \ 158 SCALE((val)*(scale) + (ext),192*(scale),lm85_scaling[n]) 159 160 #define INS_FROM_REG(n,val) INSEXT_FROM_REG(n,val,0,1) 161 162 /* FAN speed is measured using 90kHz clock */ 163 #define FAN_TO_REG(val) (SENSORS_LIMIT( (val)<=0?0: 5400000/(val),0,65534)) 164 #define FAN_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:5400000/(val)) 165 166 /* Temperature is reported in .001 degC increments */ 167 #define TEMP_TO_REG(val) \ 168 SENSORS_LIMIT(SCALE(val,1000,1),-127,127) 169 #define TEMPEXT_FROM_REG(val,ext,scale) \ 170 SCALE((val)*scale + (ext),scale,1000) 171 #define TEMP_FROM_REG(val) \ 172 TEMPEXT_FROM_REG(val,0,1) 173 174 #define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255)) 175 #define PWM_FROM_REG(val) (val) 176 177 178 /* ZONEs have the following parameters: 179 * Limit (low) temp, 1. degC 180 * Hysteresis (below limit), 1. degC (0-15) 181 * Range of speed control, .1 degC (2-80) 182 * Critical (high) temp, 1. degC 183 * 184 * FAN PWMs have the following parameters: 185 * Reference Zone, 1, 2, 3, etc. 186 * Spinup time, .05 sec 187 * PWM value at limit/low temp, 1 count 188 * PWM Frequency, 1. Hz 189 * PWM is Min or OFF below limit, flag 190 * Invert PWM output, flag 191 * 192 * Some chips filter the temp, others the fan. 193 * Filter constant (or disabled) .1 seconds 194 */ 195 196 /* These are the zone temperature range encodings in .001 degree C */ 197 static int lm85_range_map[] = { 198 2000, 2500, 3300, 4000, 5000, 6600, 199 8000, 10000, 13300, 16000, 20000, 26600, 200 32000, 40000, 53300, 80000 201 }; 202 static int RANGE_TO_REG( int range ) 203 { 204 int i; 205 206 if ( range < lm85_range_map[0] ) { 207 return 0 ; 208 } else if ( range > lm85_range_map[15] ) { 209 return 15 ; 210 } else { /* find closest match */ 211 for ( i = 14 ; i >= 0 ; --i ) { 212 if ( range > lm85_range_map[i] ) { /* range bracketed */ 213 if ((lm85_range_map[i+1] - range) < 214 (range - lm85_range_map[i])) { 215 i++; 216 break; 217 } 218 break; 219 } 220 } 221 } 222 return( i & 0x0f ); 223 } 224 #define RANGE_FROM_REG(val) (lm85_range_map[(val)&0x0f]) 225 226 /* These are the Acoustic Enhancement, or Temperature smoothing encodings 227 * NOTE: The enable/disable bit is INCLUDED in these encodings as the 228 * MSB (bit 3, value 8). If the enable bit is 0, the encoded value 229 * is ignored, or set to 0. 230 */ 231 /* These are the PWM frequency encodings */ 232 static int lm85_freq_map[] = { /* .1 Hz */ 233 100, 150, 230, 300, 380, 470, 620, 940 234 }; 235 static int FREQ_TO_REG( int freq ) 236 { 237 int i; 238 239 if( freq >= lm85_freq_map[7] ) { return 7 ; } 240 for( i = 0 ; i < 7 ; ++i ) 241 if( freq <= lm85_freq_map[i] ) 242 break ; 243 return( i & 0x07 ); 244 } 245 #define FREQ_FROM_REG(val) (lm85_freq_map[(val)&0x07]) 246 247 /* Since we can't use strings, I'm abusing these numbers 248 * to stand in for the following meanings: 249 * 1 -- PWM responds to Zone 1 250 * 2 -- PWM responds to Zone 2 251 * 3 -- PWM responds to Zone 3 252 * 23 -- PWM responds to the higher temp of Zone 2 or 3 253 * 123 -- PWM responds to highest of Zone 1, 2, or 3 254 * 0 -- PWM is always at 0% (ie, off) 255 * -1 -- PWM is always at 100% 256 * -2 -- PWM responds to manual control 257 */ 258 259 static int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 }; 260 #define ZONE_FROM_REG(val) (lm85_zone_map[((val)>>5)&0x07]) 261 262 static int ZONE_TO_REG( int zone ) 263 { 264 int i; 265 266 for( i = 0 ; i <= 7 ; ++i ) 267 if( zone == lm85_zone_map[i] ) 268 break ; 269 if( i > 7 ) /* Not found. */ 270 i = 3; /* Always 100% */ 271 return( (i & 0x07)<<5 ); 272 } 273 274 #define HYST_TO_REG(val) (SENSORS_LIMIT(((val)+500)/1000,0,15)) 275 #define HYST_FROM_REG(val) ((val)*1000) 276 277 #define OFFSET_TO_REG(val) (SENSORS_LIMIT((val)/25,-127,127)) 278 #define OFFSET_FROM_REG(val) ((val)*25) 279 280 #define PPR_MASK(fan) (0x03<<(fan *2)) 281 #define PPR_TO_REG(val,fan) (SENSORS_LIMIT((val)-1,0,3)<<(fan *2)) 282 #define PPR_FROM_REG(val,fan) ((((val)>>(fan * 2))&0x03)+1) 283 284 /* Chip sampling rates 285 * 286 * Some sensors are not updated more frequently than once per second 287 * so it doesn't make sense to read them more often than that. 288 * We cache the results and return the saved data if the driver 289 * is called again before a second has elapsed. 290 * 291 * Also, there is significant configuration data for this chip 292 * given the automatic PWM fan control that is possible. There 293 * are about 47 bytes of config data to only 22 bytes of actual 294 * readings. So, we keep the config data up to date in the cache 295 * when it is written and only sample it once every 1 *minute* 296 */ 297 #define LM85_DATA_INTERVAL (HZ + HZ / 2) 298 #define LM85_CONFIG_INTERVAL (1 * 60 * HZ) 299 300 /* For each registered LM85, we need to keep some data in memory. That 301 data is pointed to by lm85_list[NR]->data. The structure itself is 302 dynamically allocated, at the same time when a new lm85 client is 303 allocated. */ 304 305 /* LM85 can automatically adjust fan speeds based on temperature 306 * This structure encapsulates an entire Zone config. There are 307 * three zones (one for each temperature input) on the lm85 308 */ 309 struct lm85_zone { 310 s8 limit; /* Low temp limit */ 311 u8 hyst; /* Low limit hysteresis. (0-15) */ 312 u8 range; /* Temp range, encoded */ 313 s8 critical; /* "All fans ON" temp limit */ 314 u8 off_desired; /* Actual "off" temperature specified. Preserved 315 * to prevent "drift" as other autofan control 316 * values change. 317 */ 318 u8 max_desired; /* Actual "max" temperature specified. Preserved 319 * to prevent "drift" as other autofan control 320 * values change. 321 */ 322 }; 323 324 struct lm85_autofan { 325 u8 config; /* Register value */ 326 u8 freq; /* PWM frequency, encoded */ 327 u8 min_pwm; /* Minimum PWM value, encoded */ 328 u8 min_off; /* Min PWM or OFF below "limit", flag */ 329 }; 330 331 struct lm85_data { 332 struct i2c_client client; 333 struct class_device *class_dev; 334 struct semaphore lock; 335 enum chips type; 336 337 struct semaphore update_lock; 338 int valid; /* !=0 if following fields are valid */ 339 unsigned long last_reading; /* In jiffies */ 340 unsigned long last_config; /* In jiffies */ 341 342 u8 in[8]; /* Register value */ 343 u8 in_max[8]; /* Register value */ 344 u8 in_min[8]; /* Register value */ 345 s8 temp[3]; /* Register value */ 346 s8 temp_min[3]; /* Register value */ 347 s8 temp_max[3]; /* Register value */ 348 s8 temp_offset[3]; /* Register value */ 349 u16 fan[4]; /* Register value */ 350 u16 fan_min[4]; /* Register value */ 351 u8 pwm[3]; /* Register value */ 352 u8 spinup_ctl; /* Register encoding, combined */ 353 u8 tach_mode; /* Register encoding, combined */ 354 u8 temp_ext[3]; /* Decoded values */ 355 u8 in_ext[8]; /* Decoded values */ 356 u8 adc_scale; /* ADC Extended bits scaling factor */ 357 u8 fan_ppr; /* Register value */ 358 u8 smooth[3]; /* Register encoding */ 359 u8 vid; /* Register value */ 360 u8 vrm; /* VRM version */ 361 u8 syncpwm3; /* Saved PWM3 for TACH 2,3,4 config */ 362 u8 oppoint[3]; /* Register value */ 363 u16 tmin_ctl; /* Register value */ 364 unsigned long therm_total; /* Cummulative therm count */ 365 u8 therm_limit; /* Register value */ 366 u32 alarms; /* Register encoding, combined */ 367 struct lm85_autofan autofan[3]; 368 struct lm85_zone zone[3]; 369 }; 370 371 static int lm85_attach_adapter(struct i2c_adapter *adapter); 372 static int lm85_detect(struct i2c_adapter *adapter, int address, 373 int kind); 374 static int lm85_detach_client(struct i2c_client *client); 375 376 static int lm85_read_value(struct i2c_client *client, u8 register); 377 static int lm85_write_value(struct i2c_client *client, u8 register, int value); 378 static struct lm85_data *lm85_update_device(struct device *dev); 379 static void lm85_init_client(struct i2c_client *client); 380 381 382 static struct i2c_driver lm85_driver = { 383 .owner = THIS_MODULE, 384 .name = "lm85", 385 .id = I2C_DRIVERID_LM85, 386 .flags = I2C_DF_NOTIFY, 387 .attach_adapter = lm85_attach_adapter, 388 .detach_client = lm85_detach_client, 389 }; 390 391 392 /* 4 Fans */ 393 static ssize_t show_fan(struct device *dev, char *buf, int nr) 394 { 395 struct lm85_data *data = lm85_update_device(dev); 396 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr]) ); 397 } 398 static ssize_t show_fan_min(struct device *dev, char *buf, int nr) 399 { 400 struct lm85_data *data = lm85_update_device(dev); 401 return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr]) ); 402 } 403 static ssize_t set_fan_min(struct device *dev, const char *buf, 404 size_t count, int nr) 405 { 406 struct i2c_client *client = to_i2c_client(dev); 407 struct lm85_data *data = i2c_get_clientdata(client); 408 long val = simple_strtol(buf, NULL, 10); 409 410 down(&data->update_lock); 411 data->fan_min[nr] = FAN_TO_REG(val); 412 lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]); 413 up(&data->update_lock); 414 return count; 415 } 416 417 #define show_fan_offset(offset) \ 418 static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 419 { \ 420 return show_fan(dev, buf, offset - 1); \ 421 } \ 422 static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 423 { \ 424 return show_fan_min(dev, buf, offset - 1); \ 425 } \ 426 static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ 427 const char *buf, size_t count) \ 428 { \ 429 return set_fan_min(dev, buf, count, offset - 1); \ 430 } \ 431 static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, \ 432 NULL); \ 433 static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 434 show_fan_##offset##_min, set_fan_##offset##_min); 435 436 show_fan_offset(1); 437 show_fan_offset(2); 438 show_fan_offset(3); 439 show_fan_offset(4); 440 441 /* vid, vrm, alarms */ 442 443 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) 444 { 445 struct lm85_data *data = lm85_update_device(dev); 446 int vid; 447 448 if (data->type == adt7463 && (data->vid & 0x80)) { 449 /* 6-pin VID (VRM 10) */ 450 vid = vid_from_reg(data->vid & 0x3f, data->vrm); 451 } else { 452 /* 5-pin VID (VRM 9) */ 453 vid = vid_from_reg(data->vid & 0x1f, data->vrm); 454 } 455 456 return sprintf(buf, "%d\n", vid); 457 } 458 459 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 460 461 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) 462 { 463 struct lm85_data *data = lm85_update_device(dev); 464 return sprintf(buf, "%ld\n", (long) data->vrm); 465 } 466 467 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 468 { 469 struct i2c_client *client = to_i2c_client(dev); 470 struct lm85_data *data = i2c_get_clientdata(client); 471 u32 val; 472 473 val = simple_strtoul(buf, NULL, 10); 474 data->vrm = val; 475 return count; 476 } 477 478 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 479 480 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf) 481 { 482 struct lm85_data *data = lm85_update_device(dev); 483 return sprintf(buf, "%u\n", data->alarms); 484 } 485 486 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 487 488 /* pwm */ 489 490 static ssize_t show_pwm(struct device *dev, char *buf, int nr) 491 { 492 struct lm85_data *data = lm85_update_device(dev); 493 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) ); 494 } 495 static ssize_t set_pwm(struct device *dev, const char *buf, 496 size_t count, int nr) 497 { 498 struct i2c_client *client = to_i2c_client(dev); 499 struct lm85_data *data = i2c_get_clientdata(client); 500 long val = simple_strtol(buf, NULL, 10); 501 502 down(&data->update_lock); 503 data->pwm[nr] = PWM_TO_REG(val); 504 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 505 up(&data->update_lock); 506 return count; 507 } 508 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr) 509 { 510 struct lm85_data *data = lm85_update_device(dev); 511 int pwm_zone; 512 513 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 514 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) ); 515 } 516 517 #define show_pwm_reg(offset) \ 518 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 519 { \ 520 return show_pwm(dev, buf, offset - 1); \ 521 } \ 522 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \ 523 const char *buf, size_t count) \ 524 { \ 525 return set_pwm(dev, buf, count, offset - 1); \ 526 } \ 527 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 528 { \ 529 return show_pwm_enable(dev, buf, offset - 1); \ 530 } \ 531 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 532 show_pwm_##offset, set_pwm_##offset); \ 533 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \ 534 show_pwm_enable##offset, NULL); 535 536 show_pwm_reg(1); 537 show_pwm_reg(2); 538 show_pwm_reg(3); 539 540 /* Voltages */ 541 542 static ssize_t show_in(struct device *dev, char *buf, int nr) 543 { 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 data->adc_scale) ); 549 } 550 static ssize_t show_in_min(struct device *dev, char *buf, int nr) 551 { 552 struct lm85_data *data = lm85_update_device(dev); 553 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) ); 554 } 555 static ssize_t set_in_min(struct device *dev, const char *buf, 556 size_t count, int nr) 557 { 558 struct i2c_client *client = to_i2c_client(dev); 559 struct lm85_data *data = i2c_get_clientdata(client); 560 long val = simple_strtol(buf, NULL, 10); 561 562 down(&data->update_lock); 563 data->in_min[nr] = INS_TO_REG(nr, val); 564 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 565 up(&data->update_lock); 566 return count; 567 } 568 static ssize_t show_in_max(struct device *dev, char *buf, int nr) 569 { 570 struct lm85_data *data = lm85_update_device(dev); 571 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) ); 572 } 573 static ssize_t set_in_max(struct device *dev, const char *buf, 574 size_t count, int nr) 575 { 576 struct i2c_client *client = to_i2c_client(dev); 577 struct lm85_data *data = i2c_get_clientdata(client); 578 long val = simple_strtol(buf, NULL, 10); 579 580 down(&data->update_lock); 581 data->in_max[nr] = INS_TO_REG(nr, val); 582 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 583 up(&data->update_lock); 584 return count; 585 } 586 #define show_in_reg(offset) \ 587 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 588 { \ 589 return show_in(dev, buf, offset); \ 590 } \ 591 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 592 { \ 593 return show_in_min(dev, buf, offset); \ 594 } \ 595 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 596 { \ 597 return show_in_max(dev, buf, offset); \ 598 } \ 599 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \ 600 const char *buf, size_t count) \ 601 { \ 602 return set_in_min(dev, buf, count, offset); \ 603 } \ 604 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \ 605 const char *buf, size_t count) \ 606 { \ 607 return set_in_max(dev, buf, count, offset); \ 608 } \ 609 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \ 610 NULL); \ 611 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 612 show_in_##offset##_min, set_in_##offset##_min); \ 613 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 614 show_in_##offset##_max, set_in_##offset##_max); 615 616 show_in_reg(0); 617 show_in_reg(1); 618 show_in_reg(2); 619 show_in_reg(3); 620 show_in_reg(4); 621 622 /* Temps */ 623 624 static ssize_t show_temp(struct device *dev, char *buf, int nr) 625 { 626 struct lm85_data *data = lm85_update_device(dev); 627 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr], 628 data->temp_ext[nr], 629 data->adc_scale) ); 630 } 631 static ssize_t show_temp_min(struct device *dev, char *buf, int nr) 632 { 633 struct lm85_data *data = lm85_update_device(dev); 634 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) ); 635 } 636 static ssize_t set_temp_min(struct device *dev, const char *buf, 637 size_t count, int nr) 638 { 639 struct i2c_client *client = to_i2c_client(dev); 640 struct lm85_data *data = i2c_get_clientdata(client); 641 long val = simple_strtol(buf, NULL, 10); 642 643 down(&data->update_lock); 644 data->temp_min[nr] = TEMP_TO_REG(val); 645 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 646 up(&data->update_lock); 647 return count; 648 } 649 static ssize_t show_temp_max(struct device *dev, char *buf, int nr) 650 { 651 struct lm85_data *data = lm85_update_device(dev); 652 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) ); 653 } 654 static ssize_t set_temp_max(struct device *dev, const char *buf, 655 size_t count, int nr) 656 { 657 struct i2c_client *client = to_i2c_client(dev); 658 struct lm85_data *data = i2c_get_clientdata(client); 659 long val = simple_strtol(buf, NULL, 10); 660 661 down(&data->update_lock); 662 data->temp_max[nr] = TEMP_TO_REG(val); 663 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 664 up(&data->update_lock); 665 return count; 666 } 667 #define show_temp_reg(offset) \ 668 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 669 { \ 670 return show_temp(dev, buf, offset - 1); \ 671 } \ 672 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 673 { \ 674 return show_temp_min(dev, buf, offset - 1); \ 675 } \ 676 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 677 { \ 678 return show_temp_max(dev, buf, offset - 1); \ 679 } \ 680 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \ 681 const char *buf, size_t count) \ 682 { \ 683 return set_temp_min(dev, buf, count, offset - 1); \ 684 } \ 685 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \ 686 const char *buf, size_t count) \ 687 { \ 688 return set_temp_max(dev, buf, count, offset - 1); \ 689 } \ 690 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \ 691 NULL); \ 692 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 693 show_temp_##offset##_min, set_temp_##offset##_min); \ 694 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 695 show_temp_##offset##_max, set_temp_##offset##_max); 696 697 show_temp_reg(1); 698 show_temp_reg(2); 699 show_temp_reg(3); 700 701 702 /* Automatic PWM control */ 703 704 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr) 705 { 706 struct lm85_data *data = lm85_update_device(dev); 707 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 708 } 709 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf, 710 size_t count, int nr) 711 { 712 struct i2c_client *client = to_i2c_client(dev); 713 struct lm85_data *data = i2c_get_clientdata(client); 714 long val = simple_strtol(buf, NULL, 10); 715 716 down(&data->update_lock); 717 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 718 | ZONE_TO_REG(val) ; 719 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 720 data->autofan[nr].config); 721 up(&data->update_lock); 722 return count; 723 } 724 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr) 725 { 726 struct lm85_data *data = lm85_update_device(dev); 727 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 728 } 729 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf, 730 size_t count, int nr) 731 { 732 struct i2c_client *client = to_i2c_client(dev); 733 struct lm85_data *data = i2c_get_clientdata(client); 734 long val = simple_strtol(buf, NULL, 10); 735 736 down(&data->update_lock); 737 data->autofan[nr].min_pwm = PWM_TO_REG(val); 738 lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr), 739 data->autofan[nr].min_pwm); 740 up(&data->update_lock); 741 return count; 742 } 743 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr) 744 { 745 struct lm85_data *data = lm85_update_device(dev); 746 return sprintf(buf,"%d\n", data->autofan[nr].min_off); 747 } 748 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf, 749 size_t count, int nr) 750 { 751 struct i2c_client *client = to_i2c_client(dev); 752 struct lm85_data *data = i2c_get_clientdata(client); 753 long val = simple_strtol(buf, NULL, 10); 754 755 down(&data->update_lock); 756 data->autofan[nr].min_off = val; 757 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0] 758 | data->syncpwm3 759 | (data->autofan[0].min_off ? 0x20 : 0) 760 | (data->autofan[1].min_off ? 0x40 : 0) 761 | (data->autofan[2].min_off ? 0x80 : 0) 762 ); 763 up(&data->update_lock); 764 return count; 765 } 766 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr) 767 { 768 struct lm85_data *data = lm85_update_device(dev); 769 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq)); 770 } 771 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf, 772 size_t count, int nr) 773 { 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 down(&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 up(&data->update_lock); 785 return count; 786 } 787 #define pwm_auto(offset) \ 788 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 789 char *buf) \ 790 { \ 791 return show_pwm_auto_channels(dev, buf, offset - 1); \ 792 } \ 793 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 794 const char *buf, size_t count) \ 795 { \ 796 return set_pwm_auto_channels(dev, buf, count, offset - 1); \ 797 } \ 798 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 799 char *buf) \ 800 { \ 801 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \ 802 } \ 803 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 804 const char *buf, size_t count) \ 805 { \ 806 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \ 807 } \ 808 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 809 char *buf) \ 810 { \ 811 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \ 812 } \ 813 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 814 const char *buf, size_t count) \ 815 { \ 816 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \ 817 } \ 818 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \ 819 char *buf) \ 820 { \ 821 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \ 822 } \ 823 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \ 824 const char *buf, size_t count) \ 825 { \ 826 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \ 827 } \ 828 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \ 829 show_pwm##offset##_auto_channels, \ 830 set_pwm##offset##_auto_channels); \ 831 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \ 832 show_pwm##offset##_auto_pwm_min, \ 833 set_pwm##offset##_auto_pwm_min); \ 834 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \ 835 show_pwm##offset##_auto_pwm_minctl, \ 836 set_pwm##offset##_auto_pwm_minctl); \ 837 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \ 838 show_pwm##offset##_auto_pwm_freq, \ 839 set_pwm##offset##_auto_pwm_freq); 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, char *buf, int nr) 847 { 848 struct lm85_data *data = lm85_update_device(dev); 849 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 850 HYST_FROM_REG(data->zone[nr].hyst)); 851 } 852 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf, 853 size_t count, int nr) 854 { 855 struct i2c_client *client = to_i2c_client(dev); 856 struct lm85_data *data = i2c_get_clientdata(client); 857 int min; 858 long val = simple_strtol(buf, NULL, 10); 859 860 down(&data->update_lock); 861 min = TEMP_FROM_REG(data->zone[nr].limit); 862 data->zone[nr].off_desired = TEMP_TO_REG(val); 863 data->zone[nr].hyst = HYST_TO_REG(min - val); 864 if ( nr == 0 || nr == 1 ) { 865 lm85_write_value(client, LM85_REG_AFAN_HYST1, 866 (data->zone[0].hyst << 4) 867 | data->zone[1].hyst 868 ); 869 } else { 870 lm85_write_value(client, LM85_REG_AFAN_HYST2, 871 (data->zone[2].hyst << 4) 872 ); 873 } 874 up(&data->update_lock); 875 return count; 876 } 877 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr) 878 { 879 struct lm85_data *data = lm85_update_device(dev); 880 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) ); 881 } 882 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf, 883 size_t count, int nr) 884 { 885 struct i2c_client *client = to_i2c_client(dev); 886 struct lm85_data *data = i2c_get_clientdata(client); 887 long val = simple_strtol(buf, NULL, 10); 888 889 down(&data->update_lock); 890 data->zone[nr].limit = TEMP_TO_REG(val); 891 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 892 data->zone[nr].limit); 893 894 /* Update temp_auto_max and temp_auto_range */ 895 data->zone[nr].range = RANGE_TO_REG( 896 TEMP_FROM_REG(data->zone[nr].max_desired) - 897 TEMP_FROM_REG(data->zone[nr].limit)); 898 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 899 ((data->zone[nr].range & 0x0f) << 4) 900 | (data->autofan[nr].freq & 0x07)); 901 902 /* Update temp_auto_hyst and temp_auto_off */ 903 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 904 data->zone[nr].limit) - TEMP_FROM_REG( 905 data->zone[nr].off_desired)); 906 if ( nr == 0 || nr == 1 ) { 907 lm85_write_value(client, LM85_REG_AFAN_HYST1, 908 (data->zone[0].hyst << 4) 909 | data->zone[1].hyst 910 ); 911 } else { 912 lm85_write_value(client, LM85_REG_AFAN_HYST2, 913 (data->zone[2].hyst << 4) 914 ); 915 } 916 up(&data->update_lock); 917 return count; 918 } 919 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr) 920 { 921 struct lm85_data *data = lm85_update_device(dev); 922 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 923 RANGE_FROM_REG(data->zone[nr].range)); 924 } 925 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf, 926 size_t count, int nr) 927 { 928 struct i2c_client *client = to_i2c_client(dev); 929 struct lm85_data *data = i2c_get_clientdata(client); 930 int min; 931 long val = simple_strtol(buf, NULL, 10); 932 933 down(&data->update_lock); 934 min = TEMP_FROM_REG(data->zone[nr].limit); 935 data->zone[nr].max_desired = TEMP_TO_REG(val); 936 data->zone[nr].range = RANGE_TO_REG( 937 val - min); 938 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 939 ((data->zone[nr].range & 0x0f) << 4) 940 | (data->autofan[nr].freq & 0x07)); 941 up(&data->update_lock); 942 return count; 943 } 944 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr) 945 { 946 struct lm85_data *data = lm85_update_device(dev); 947 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 948 } 949 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf, 950 size_t count, int nr) 951 { 952 struct i2c_client *client = to_i2c_client(dev); 953 struct lm85_data *data = i2c_get_clientdata(client); 954 long val = simple_strtol(buf, NULL, 10); 955 956 down(&data->update_lock); 957 data->zone[nr].critical = TEMP_TO_REG(val); 958 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 959 data->zone[nr].critical); 960 up(&data->update_lock); 961 return count; 962 } 963 #define temp_auto(offset) \ 964 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 965 char *buf) \ 966 { \ 967 return show_temp_auto_temp_off(dev, buf, offset - 1); \ 968 } \ 969 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 970 const char *buf, size_t count) \ 971 { \ 972 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \ 973 } \ 974 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 975 char *buf) \ 976 { \ 977 return show_temp_auto_temp_min(dev, buf, offset - 1); \ 978 } \ 979 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 980 const char *buf, size_t count) \ 981 { \ 982 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \ 983 } \ 984 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 985 char *buf) \ 986 { \ 987 return show_temp_auto_temp_max(dev, buf, offset - 1); \ 988 } \ 989 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 990 const char *buf, size_t count) \ 991 { \ 992 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \ 993 } \ 994 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 995 char *buf) \ 996 { \ 997 return show_temp_auto_temp_crit(dev, buf, offset - 1); \ 998 } \ 999 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 1000 const char *buf, size_t count) \ 1001 { \ 1002 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \ 1003 } \ 1004 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \ 1005 show_temp##offset##_auto_temp_off, \ 1006 set_temp##offset##_auto_temp_off); \ 1007 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \ 1008 show_temp##offset##_auto_temp_min, \ 1009 set_temp##offset##_auto_temp_min); \ 1010 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \ 1011 show_temp##offset##_auto_temp_max, \ 1012 set_temp##offset##_auto_temp_max); \ 1013 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \ 1014 show_temp##offset##_auto_temp_crit, \ 1015 set_temp##offset##_auto_temp_crit); 1016 temp_auto(1); 1017 temp_auto(2); 1018 temp_auto(3); 1019 1020 static int lm85_attach_adapter(struct i2c_adapter *adapter) 1021 { 1022 if (!(adapter->class & I2C_CLASS_HWMON)) 1023 return 0; 1024 return i2c_probe(adapter, &addr_data, lm85_detect); 1025 } 1026 1027 static int lm85_detect(struct i2c_adapter *adapter, int address, 1028 int kind) 1029 { 1030 int company, verstep ; 1031 struct i2c_client *new_client = NULL; 1032 struct lm85_data *data; 1033 int err = 0; 1034 const char *type_name = ""; 1035 1036 if (!i2c_check_functionality(adapter, 1037 I2C_FUNC_SMBUS_BYTE_DATA)) { 1038 /* We need to be able to do byte I/O */ 1039 goto ERROR0 ; 1040 }; 1041 1042 /* OK. For now, we presume we have a valid client. We now create the 1043 client structure, even though we cannot fill it completely yet. 1044 But it allows us to access lm85_{read,write}_value. */ 1045 1046 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) { 1047 err = -ENOMEM; 1048 goto ERROR0; 1049 } 1050 1051 new_client = &data->client; 1052 i2c_set_clientdata(new_client, data); 1053 new_client->addr = address; 1054 new_client->adapter = adapter; 1055 new_client->driver = &lm85_driver; 1056 new_client->flags = 0; 1057 1058 /* Now, we do the remaining detection. */ 1059 1060 company = lm85_read_value(new_client, LM85_REG_COMPANY); 1061 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP); 1062 1063 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with" 1064 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1065 i2c_adapter_id(new_client->adapter), new_client->addr, 1066 company, verstep); 1067 1068 /* If auto-detecting, Determine the chip type. */ 1069 if (kind <= 0) { 1070 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n", 1071 i2c_adapter_id(adapter), address ); 1072 if( company == LM85_COMPANY_NATIONAL 1073 && verstep == LM85_VERSTEP_LM85C ) { 1074 kind = lm85c ; 1075 } else if( company == LM85_COMPANY_NATIONAL 1076 && verstep == LM85_VERSTEP_LM85B ) { 1077 kind = lm85b ; 1078 } else if( company == LM85_COMPANY_NATIONAL 1079 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1080 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1081 " Defaulting to LM85.\n", verstep); 1082 kind = any_chip ; 1083 } else if( company == LM85_COMPANY_ANALOG_DEV 1084 && verstep == LM85_VERSTEP_ADM1027 ) { 1085 kind = adm1027 ; 1086 } else if( company == LM85_COMPANY_ANALOG_DEV 1087 && (verstep == LM85_VERSTEP_ADT7463 1088 || verstep == LM85_VERSTEP_ADT7463C) ) { 1089 kind = adt7463 ; 1090 } else if( company == LM85_COMPANY_ANALOG_DEV 1091 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1092 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1093 " Defaulting to Generic LM85.\n", verstep ); 1094 kind = any_chip ; 1095 } else if( company == LM85_COMPANY_SMSC 1096 && (verstep == LM85_VERSTEP_EMC6D100_A0 1097 || verstep == LM85_VERSTEP_EMC6D100_A1) ) { 1098 /* Unfortunately, we can't tell a '100 from a '101 1099 * from the registers. Since a '101 is a '100 1100 * in a package with fewer pins and therefore no 1101 * 3.3V, 1.5V or 1.8V inputs, perhaps if those 1102 * inputs read 0, then it's a '101. 1103 */ 1104 kind = emc6d100 ; 1105 } else if( company == LM85_COMPANY_SMSC 1106 && verstep == LM85_VERSTEP_EMC6D102) { 1107 kind = emc6d102 ; 1108 } else if( company == LM85_COMPANY_SMSC 1109 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1110 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n"); 1111 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x" 1112 " Defaulting to Generic LM85.\n", verstep ); 1113 kind = any_chip ; 1114 } else if( kind == any_chip 1115 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1116 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n"); 1117 /* Leave kind as "any_chip" */ 1118 } else { 1119 dev_dbg(&adapter->dev, "Autodetection failed\n"); 1120 /* Not an LM85 ... */ 1121 if( kind == any_chip ) { /* User used force=x,y */ 1122 dev_err(&adapter->dev, "Generic LM85 Version 6 not" 1123 " found at %d,0x%02x. Try force_lm85c.\n", 1124 i2c_adapter_id(adapter), address ); 1125 } 1126 err = 0 ; 1127 goto ERROR1; 1128 } 1129 } 1130 1131 /* Fill in the chip specific driver values */ 1132 if ( kind == any_chip ) { 1133 type_name = "lm85"; 1134 } else if ( kind == lm85b ) { 1135 type_name = "lm85b"; 1136 } else if ( kind == lm85c ) { 1137 type_name = "lm85c"; 1138 } else if ( kind == adm1027 ) { 1139 type_name = "adm1027"; 1140 } else if ( kind == adt7463 ) { 1141 type_name = "adt7463"; 1142 } else if ( kind == emc6d100){ 1143 type_name = "emc6d100"; 1144 } else if ( kind == emc6d102 ) { 1145 type_name = "emc6d102"; 1146 } 1147 strlcpy(new_client->name, type_name, I2C_NAME_SIZE); 1148 1149 /* Fill in the remaining client fields */ 1150 data->type = kind; 1151 data->valid = 0; 1152 init_MUTEX(&data->update_lock); 1153 1154 /* Tell the I2C layer a new client has arrived */ 1155 if ((err = i2c_attach_client(new_client))) 1156 goto ERROR1; 1157 1158 /* Set the VRM version */ 1159 data->vrm = vid_which_vrm(); 1160 1161 /* Initialize the LM85 chip */ 1162 lm85_init_client(new_client); 1163 1164 /* Register sysfs hooks */ 1165 data->class_dev = hwmon_device_register(&new_client->dev); 1166 if (IS_ERR(data->class_dev)) { 1167 err = PTR_ERR(data->class_dev); 1168 goto ERROR2; 1169 } 1170 1171 device_create_file(&new_client->dev, &dev_attr_fan1_input); 1172 device_create_file(&new_client->dev, &dev_attr_fan2_input); 1173 device_create_file(&new_client->dev, &dev_attr_fan3_input); 1174 device_create_file(&new_client->dev, &dev_attr_fan4_input); 1175 device_create_file(&new_client->dev, &dev_attr_fan1_min); 1176 device_create_file(&new_client->dev, &dev_attr_fan2_min); 1177 device_create_file(&new_client->dev, &dev_attr_fan3_min); 1178 device_create_file(&new_client->dev, &dev_attr_fan4_min); 1179 device_create_file(&new_client->dev, &dev_attr_pwm1); 1180 device_create_file(&new_client->dev, &dev_attr_pwm2); 1181 device_create_file(&new_client->dev, &dev_attr_pwm3); 1182 device_create_file(&new_client->dev, &dev_attr_pwm1_enable); 1183 device_create_file(&new_client->dev, &dev_attr_pwm2_enable); 1184 device_create_file(&new_client->dev, &dev_attr_pwm3_enable); 1185 device_create_file(&new_client->dev, &dev_attr_in0_input); 1186 device_create_file(&new_client->dev, &dev_attr_in1_input); 1187 device_create_file(&new_client->dev, &dev_attr_in2_input); 1188 device_create_file(&new_client->dev, &dev_attr_in3_input); 1189 device_create_file(&new_client->dev, &dev_attr_in0_min); 1190 device_create_file(&new_client->dev, &dev_attr_in1_min); 1191 device_create_file(&new_client->dev, &dev_attr_in2_min); 1192 device_create_file(&new_client->dev, &dev_attr_in3_min); 1193 device_create_file(&new_client->dev, &dev_attr_in0_max); 1194 device_create_file(&new_client->dev, &dev_attr_in1_max); 1195 device_create_file(&new_client->dev, &dev_attr_in2_max); 1196 device_create_file(&new_client->dev, &dev_attr_in3_max); 1197 device_create_file(&new_client->dev, &dev_attr_temp1_input); 1198 device_create_file(&new_client->dev, &dev_attr_temp2_input); 1199 device_create_file(&new_client->dev, &dev_attr_temp3_input); 1200 device_create_file(&new_client->dev, &dev_attr_temp1_min); 1201 device_create_file(&new_client->dev, &dev_attr_temp2_min); 1202 device_create_file(&new_client->dev, &dev_attr_temp3_min); 1203 device_create_file(&new_client->dev, &dev_attr_temp1_max); 1204 device_create_file(&new_client->dev, &dev_attr_temp2_max); 1205 device_create_file(&new_client->dev, &dev_attr_temp3_max); 1206 device_create_file(&new_client->dev, &dev_attr_vrm); 1207 device_create_file(&new_client->dev, &dev_attr_cpu0_vid); 1208 device_create_file(&new_client->dev, &dev_attr_alarms); 1209 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels); 1210 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels); 1211 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels); 1212 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min); 1213 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min); 1214 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min); 1215 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl); 1216 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl); 1217 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl); 1218 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq); 1219 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq); 1220 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq); 1221 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off); 1222 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off); 1223 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off); 1224 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min); 1225 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min); 1226 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min); 1227 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max); 1228 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max); 1229 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max); 1230 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit); 1231 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit); 1232 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit); 1233 1234 /* The ADT7463 has an optional VRM 10 mode where pin 21 is used 1235 as a sixth digital VID input rather than an analog input. */ 1236 data->vid = lm85_read_value(new_client, LM85_REG_VID); 1237 if (!(kind == adt7463 && (data->vid & 0x80))) { 1238 device_create_file(&new_client->dev, &dev_attr_in4_input); 1239 device_create_file(&new_client->dev, &dev_attr_in4_min); 1240 device_create_file(&new_client->dev, &dev_attr_in4_max); 1241 } 1242 1243 return 0; 1244 1245 /* Error out and cleanup code */ 1246 ERROR2: 1247 i2c_detach_client(new_client); 1248 ERROR1: 1249 kfree(data); 1250 ERROR0: 1251 return err; 1252 } 1253 1254 static int lm85_detach_client(struct i2c_client *client) 1255 { 1256 struct lm85_data *data = i2c_get_clientdata(client); 1257 hwmon_device_unregister(data->class_dev); 1258 i2c_detach_client(client); 1259 kfree(data); 1260 return 0; 1261 } 1262 1263 1264 static int lm85_read_value(struct i2c_client *client, u8 reg) 1265 { 1266 int res; 1267 1268 /* What size location is it? */ 1269 switch( reg ) { 1270 case LM85_REG_FAN(0) : /* Read WORD data */ 1271 case LM85_REG_FAN(1) : 1272 case LM85_REG_FAN(2) : 1273 case LM85_REG_FAN(3) : 1274 case LM85_REG_FAN_MIN(0) : 1275 case LM85_REG_FAN_MIN(1) : 1276 case LM85_REG_FAN_MIN(2) : 1277 case LM85_REG_FAN_MIN(3) : 1278 case LM85_REG_ALARM1 : /* Read both bytes at once */ 1279 res = i2c_smbus_read_byte_data(client, reg) & 0xff ; 1280 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ; 1281 break ; 1282 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */ 1283 res = i2c_smbus_read_byte_data(client, reg) << 8 ; 1284 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ; 1285 break ; 1286 default: /* Read BYTE data */ 1287 res = i2c_smbus_read_byte_data(client, reg); 1288 break ; 1289 } 1290 1291 return res ; 1292 } 1293 1294 static int lm85_write_value(struct i2c_client *client, u8 reg, int value) 1295 { 1296 int res ; 1297 1298 switch( reg ) { 1299 case LM85_REG_FAN(0) : /* Write WORD data */ 1300 case LM85_REG_FAN(1) : 1301 case LM85_REG_FAN(2) : 1302 case LM85_REG_FAN(3) : 1303 case LM85_REG_FAN_MIN(0) : 1304 case LM85_REG_FAN_MIN(1) : 1305 case LM85_REG_FAN_MIN(2) : 1306 case LM85_REG_FAN_MIN(3) : 1307 /* NOTE: ALARM is read only, so not included here */ 1308 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ; 1309 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ; 1310 break ; 1311 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */ 1312 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff); 1313 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ; 1314 break ; 1315 default: /* Write BYTE data */ 1316 res = i2c_smbus_write_byte_data(client, reg, value); 1317 break ; 1318 } 1319 1320 return res ; 1321 } 1322 1323 static void lm85_init_client(struct i2c_client *client) 1324 { 1325 int value; 1326 struct lm85_data *data = i2c_get_clientdata(client); 1327 1328 dev_dbg(&client->dev, "Initializing device\n"); 1329 1330 /* Warn if part was not "READY" */ 1331 value = lm85_read_value(client, LM85_REG_CONFIG); 1332 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value); 1333 if( value & 0x02 ) { 1334 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n", 1335 i2c_adapter_id(client->adapter), client->addr ); 1336 }; 1337 if( ! (value & 0x04) ) { 1338 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n", 1339 i2c_adapter_id(client->adapter), client->addr ); 1340 }; 1341 if( value & 0x10 1342 && ( data->type == adm1027 1343 || data->type == adt7463 ) ) { 1344 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. " 1345 "Please report this to the lm85 maintainer.\n", 1346 i2c_adapter_id(client->adapter), client->addr ); 1347 }; 1348 1349 /* WE INTENTIONALLY make no changes to the limits, 1350 * offsets, pwms, fans and zones. If they were 1351 * configured, we don't want to mess with them. 1352 * If they weren't, the default is 100% PWM, no 1353 * control and will suffice until 'sensors -s' 1354 * can be run by the user. 1355 */ 1356 1357 /* Start monitoring */ 1358 value = lm85_read_value(client, LM85_REG_CONFIG); 1359 /* Try to clear LOCK, Set START, save everything else */ 1360 value = (value & ~ 0x02) | 0x01 ; 1361 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value); 1362 lm85_write_value(client, LM85_REG_CONFIG, value); 1363 } 1364 1365 static struct lm85_data *lm85_update_device(struct device *dev) 1366 { 1367 struct i2c_client *client = to_i2c_client(dev); 1368 struct lm85_data *data = i2c_get_clientdata(client); 1369 int i; 1370 1371 down(&data->update_lock); 1372 1373 if ( !data->valid || 1374 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) { 1375 /* Things that change quickly */ 1376 dev_dbg(&client->dev, "Reading sensor values\n"); 1377 1378 /* Have to read extended bits first to "freeze" the 1379 * more significant bits that are read later. 1380 */ 1381 if ( (data->type == adm1027) || (data->type == adt7463) ) { 1382 int ext1 = lm85_read_value(client, 1383 ADM1027_REG_EXTEND_ADC1); 1384 int ext2 = lm85_read_value(client, 1385 ADM1027_REG_EXTEND_ADC2); 1386 int val = (ext1 << 8) + ext2; 1387 1388 for(i = 0; i <= 4; i++) 1389 data->in_ext[i] = (val>>(i * 2))&0x03; 1390 1391 for(i = 0; i <= 2; i++) 1392 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03; 1393 } 1394 1395 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in 1396 the emc6d102 and 2 in the adt7463 and adm1027. In all 1397 other chips ext is always 0 and the value of scale is 1398 irrelevant. So it is left in 4*/ 1399 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4; 1400 1401 data->vid = lm85_read_value(client, LM85_REG_VID); 1402 1403 for (i = 0; i <= 3; ++i) { 1404 data->in[i] = 1405 lm85_read_value(client, LM85_REG_IN(i)); 1406 } 1407 1408 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1409 data->in[4] = lm85_read_value(client, 1410 LM85_REG_IN(4)); 1411 } 1412 1413 for (i = 0; i <= 3; ++i) { 1414 data->fan[i] = 1415 lm85_read_value(client, LM85_REG_FAN(i)); 1416 } 1417 1418 for (i = 0; i <= 2; ++i) { 1419 data->temp[i] = 1420 lm85_read_value(client, LM85_REG_TEMP(i)); 1421 } 1422 1423 for (i = 0; i <= 2; ++i) { 1424 data->pwm[i] = 1425 lm85_read_value(client, LM85_REG_PWM(i)); 1426 } 1427 1428 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1429 1430 if ( data->type == adt7463 ) { 1431 if( data->therm_total < ULONG_MAX - 256 ) { 1432 data->therm_total += 1433 lm85_read_value(client, ADT7463_REG_THERM ); 1434 } 1435 } else if ( data->type == emc6d100 ) { 1436 /* Three more voltage sensors */ 1437 for (i = 5; i <= 7; ++i) { 1438 data->in[i] = 1439 lm85_read_value(client, EMC6D100_REG_IN(i)); 1440 } 1441 /* More alarm bits */ 1442 data->alarms |= 1443 lm85_read_value(client, 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) & 0x0f; 1460 data->in_ext[3] = (ext3 >> 4) & 0x0f; 1461 data->in_ext[4] = (ext2 >> 4) & 0x0f; 1462 1463 data->temp_ext[0] = ext1 & 0x0f; 1464 data->temp_ext[1] = ext2 & 0x0f; 1465 data->temp_ext[2] = (ext1 >> 4) & 0x0f; 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 } 1482 1483 if (!(data->type == adt7463 && (data->vid & 0x80))) { 1484 data->in_min[4] = lm85_read_value(client, 1485 LM85_REG_IN_MIN(4)); 1486 data->in_max[4] = lm85_read_value(client, 1487 LM85_REG_IN_MAX(4)); 1488 } 1489 1490 if ( data->type == emc6d100 ) { 1491 for (i = 5; i <= 7; ++i) { 1492 data->in_min[i] = 1493 lm85_read_value(client, EMC6D100_REG_IN_MIN(i)); 1494 data->in_max[i] = 1495 lm85_read_value(client, EMC6D100_REG_IN_MAX(i)); 1496 } 1497 } 1498 1499 for (i = 0; i <= 3; ++i) { 1500 data->fan_min[i] = 1501 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1502 } 1503 1504 for (i = 0; i <= 2; ++i) { 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 1511 for (i = 0; i <= 2; ++i) { 1512 int val ; 1513 data->autofan[i].config = 1514 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1515 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1516 data->autofan[i].freq = val & 0x07 ; 1517 data->zone[i].range = (val >> 4) & 0x0f ; 1518 data->autofan[i].min_pwm = 1519 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1520 data->zone[i].limit = 1521 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1522 data->zone[i].critical = 1523 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1524 } 1525 1526 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1527 data->smooth[0] = i & 0x0f ; 1528 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */ 1529 data->autofan[0].min_off = (i & 0x20) != 0 ; 1530 data->autofan[1].min_off = (i & 0x40) != 0 ; 1531 data->autofan[2].min_off = (i & 0x80) != 0 ; 1532 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2); 1533 data->smooth[1] = (i>>4) & 0x0f ; 1534 data->smooth[2] = i & 0x0f ; 1535 1536 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1537 data->zone[0].hyst = (i>>4) & 0x0f ; 1538 data->zone[1].hyst = i & 0x0f ; 1539 1540 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1541 data->zone[2].hyst = (i>>4) & 0x0f ; 1542 1543 if ( (data->type == lm85b) || (data->type == lm85c) ) { 1544 data->tach_mode = lm85_read_value(client, 1545 LM85_REG_TACH_MODE ); 1546 data->spinup_ctl = lm85_read_value(client, 1547 LM85_REG_SPINUP_CTL ); 1548 } else if ( (data->type == adt7463) || (data->type == adm1027) ) { 1549 if ( data->type == adt7463 ) { 1550 for (i = 0; i <= 2; ++i) { 1551 data->oppoint[i] = lm85_read_value(client, 1552 ADT7463_REG_OPPOINT(i) ); 1553 } 1554 data->tmin_ctl = lm85_read_value(client, 1555 ADT7463_REG_TMIN_CTL1 ); 1556 data->therm_limit = lm85_read_value(client, 1557 ADT7463_REG_THERM_LIMIT ); 1558 } 1559 for (i = 0; i <= 2; ++i) { 1560 data->temp_offset[i] = lm85_read_value(client, 1561 ADM1027_REG_TEMP_OFFSET(i) ); 1562 } 1563 data->tach_mode = lm85_read_value(client, 1564 ADM1027_REG_CONFIG3 ); 1565 data->fan_ppr = lm85_read_value(client, 1566 ADM1027_REG_FAN_PPR ); 1567 } 1568 1569 data->last_config = jiffies; 1570 }; /* last_config */ 1571 1572 data->valid = 1; 1573 1574 up(&data->update_lock); 1575 1576 return data; 1577 } 1578 1579 1580 static int __init sm_lm85_init(void) 1581 { 1582 return i2c_add_driver(&lm85_driver); 1583 } 1584 1585 static void __exit sm_lm85_exit(void) 1586 { 1587 i2c_del_driver(&lm85_driver); 1588 } 1589 1590 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect. 1591 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with 1592 * post 2.7.0 CVS changes. 1593 */ 1594 MODULE_LICENSE("GPL"); 1595 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com"); 1596 MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1597 1598 module_init(sm_lm85_init); 1599 module_exit(sm_lm85_exit); 1600