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 return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); 447 } 448 449 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); 450 451 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) 452 { 453 struct lm85_data *data = lm85_update_device(dev); 454 return sprintf(buf, "%ld\n", (long) data->vrm); 455 } 456 457 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 458 { 459 struct i2c_client *client = to_i2c_client(dev); 460 struct lm85_data *data = i2c_get_clientdata(client); 461 u32 val; 462 463 val = simple_strtoul(buf, NULL, 10); 464 data->vrm = val; 465 return count; 466 } 467 468 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); 469 470 static ssize_t show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf) 471 { 472 struct lm85_data *data = lm85_update_device(dev); 473 return sprintf(buf, "%u\n", data->alarms); 474 } 475 476 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); 477 478 /* pwm */ 479 480 static ssize_t show_pwm(struct device *dev, char *buf, int nr) 481 { 482 struct lm85_data *data = lm85_update_device(dev); 483 return sprintf(buf,"%d\n", PWM_FROM_REG(data->pwm[nr]) ); 484 } 485 static ssize_t set_pwm(struct device *dev, const char *buf, 486 size_t count, int nr) 487 { 488 struct i2c_client *client = to_i2c_client(dev); 489 struct lm85_data *data = i2c_get_clientdata(client); 490 long val = simple_strtol(buf, NULL, 10); 491 492 down(&data->update_lock); 493 data->pwm[nr] = PWM_TO_REG(val); 494 lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]); 495 up(&data->update_lock); 496 return count; 497 } 498 static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr) 499 { 500 struct lm85_data *data = lm85_update_device(dev); 501 int pwm_zone; 502 503 pwm_zone = ZONE_FROM_REG(data->autofan[nr].config); 504 return sprintf(buf,"%d\n", (pwm_zone != 0 && pwm_zone != -1) ); 505 } 506 507 #define show_pwm_reg(offset) \ 508 static ssize_t show_pwm_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 509 { \ 510 return show_pwm(dev, buf, offset - 1); \ 511 } \ 512 static ssize_t set_pwm_##offset (struct device *dev, struct device_attribute *attr, \ 513 const char *buf, size_t count) \ 514 { \ 515 return set_pwm(dev, buf, count, offset - 1); \ 516 } \ 517 static ssize_t show_pwm_enable##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 518 { \ 519 return show_pwm_enable(dev, buf, offset - 1); \ 520 } \ 521 static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ 522 show_pwm_##offset, set_pwm_##offset); \ 523 static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO, \ 524 show_pwm_enable##offset, NULL); 525 526 show_pwm_reg(1); 527 show_pwm_reg(2); 528 show_pwm_reg(3); 529 530 /* Voltages */ 531 532 static ssize_t show_in(struct device *dev, char *buf, int nr) 533 { 534 struct lm85_data *data = lm85_update_device(dev); 535 return sprintf( buf, "%d\n", INSEXT_FROM_REG(nr, 536 data->in[nr], 537 data->in_ext[nr], 538 data->adc_scale) ); 539 } 540 static ssize_t show_in_min(struct device *dev, char *buf, int nr) 541 { 542 struct lm85_data *data = lm85_update_device(dev); 543 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_min[nr]) ); 544 } 545 static ssize_t set_in_min(struct device *dev, const char *buf, 546 size_t count, int nr) 547 { 548 struct i2c_client *client = to_i2c_client(dev); 549 struct lm85_data *data = i2c_get_clientdata(client); 550 long val = simple_strtol(buf, NULL, 10); 551 552 down(&data->update_lock); 553 data->in_min[nr] = INS_TO_REG(nr, val); 554 lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]); 555 up(&data->update_lock); 556 return count; 557 } 558 static ssize_t show_in_max(struct device *dev, char *buf, int nr) 559 { 560 struct lm85_data *data = lm85_update_device(dev); 561 return sprintf(buf,"%d\n", INS_FROM_REG(nr, data->in_max[nr]) ); 562 } 563 static ssize_t set_in_max(struct device *dev, const char *buf, 564 size_t count, int nr) 565 { 566 struct i2c_client *client = to_i2c_client(dev); 567 struct lm85_data *data = i2c_get_clientdata(client); 568 long val = simple_strtol(buf, NULL, 10); 569 570 down(&data->update_lock); 571 data->in_max[nr] = INS_TO_REG(nr, val); 572 lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]); 573 up(&data->update_lock); 574 return count; 575 } 576 #define show_in_reg(offset) \ 577 static ssize_t show_in_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 578 { \ 579 return show_in(dev, buf, offset); \ 580 } \ 581 static ssize_t show_in_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 582 { \ 583 return show_in_min(dev, buf, offset); \ 584 } \ 585 static ssize_t show_in_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 586 { \ 587 return show_in_max(dev, buf, offset); \ 588 } \ 589 static ssize_t set_in_##offset##_min (struct device *dev, struct device_attribute *attr, \ 590 const char *buf, size_t count) \ 591 { \ 592 return set_in_min(dev, buf, count, offset); \ 593 } \ 594 static ssize_t set_in_##offset##_max (struct device *dev, struct device_attribute *attr, \ 595 const char *buf, size_t count) \ 596 { \ 597 return set_in_max(dev, buf, count, offset); \ 598 } \ 599 static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in_##offset, \ 600 NULL); \ 601 static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 602 show_in_##offset##_min, set_in_##offset##_min); \ 603 static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 604 show_in_##offset##_max, set_in_##offset##_max); 605 606 show_in_reg(0); 607 show_in_reg(1); 608 show_in_reg(2); 609 show_in_reg(3); 610 show_in_reg(4); 611 612 /* Temps */ 613 614 static ssize_t show_temp(struct device *dev, char *buf, int nr) 615 { 616 struct lm85_data *data = lm85_update_device(dev); 617 return sprintf(buf,"%d\n", TEMPEXT_FROM_REG(data->temp[nr], 618 data->temp_ext[nr], 619 data->adc_scale) ); 620 } 621 static ssize_t show_temp_min(struct device *dev, char *buf, int nr) 622 { 623 struct lm85_data *data = lm85_update_device(dev); 624 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_min[nr]) ); 625 } 626 static ssize_t set_temp_min(struct device *dev, const char *buf, 627 size_t count, int nr) 628 { 629 struct i2c_client *client = to_i2c_client(dev); 630 struct lm85_data *data = i2c_get_clientdata(client); 631 long val = simple_strtol(buf, NULL, 10); 632 633 down(&data->update_lock); 634 data->temp_min[nr] = TEMP_TO_REG(val); 635 lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]); 636 up(&data->update_lock); 637 return count; 638 } 639 static ssize_t show_temp_max(struct device *dev, char *buf, int nr) 640 { 641 struct lm85_data *data = lm85_update_device(dev); 642 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->temp_max[nr]) ); 643 } 644 static ssize_t set_temp_max(struct device *dev, const char *buf, 645 size_t count, int nr) 646 { 647 struct i2c_client *client = to_i2c_client(dev); 648 struct lm85_data *data = i2c_get_clientdata(client); 649 long val = simple_strtol(buf, NULL, 10); 650 651 down(&data->update_lock); 652 data->temp_max[nr] = TEMP_TO_REG(val); 653 lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]); 654 up(&data->update_lock); 655 return count; 656 } 657 #define show_temp_reg(offset) \ 658 static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ 659 { \ 660 return show_temp(dev, buf, offset - 1); \ 661 } \ 662 static ssize_t show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ 663 { \ 664 return show_temp_min(dev, buf, offset - 1); \ 665 } \ 666 static ssize_t show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ 667 { \ 668 return show_temp_max(dev, buf, offset - 1); \ 669 } \ 670 static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \ 671 const char *buf, size_t count) \ 672 { \ 673 return set_temp_min(dev, buf, count, offset - 1); \ 674 } \ 675 static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \ 676 const char *buf, size_t count) \ 677 { \ 678 return set_temp_max(dev, buf, count, offset - 1); \ 679 } \ 680 static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, \ 681 NULL); \ 682 static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 683 show_temp_##offset##_min, set_temp_##offset##_min); \ 684 static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 685 show_temp_##offset##_max, set_temp_##offset##_max); 686 687 show_temp_reg(1); 688 show_temp_reg(2); 689 show_temp_reg(3); 690 691 692 /* Automatic PWM control */ 693 694 static ssize_t show_pwm_auto_channels(struct device *dev, char *buf, int nr) 695 { 696 struct lm85_data *data = lm85_update_device(dev); 697 return sprintf(buf,"%d\n", ZONE_FROM_REG(data->autofan[nr].config)); 698 } 699 static ssize_t set_pwm_auto_channels(struct device *dev, const char *buf, 700 size_t count, int nr) 701 { 702 struct i2c_client *client = to_i2c_client(dev); 703 struct lm85_data *data = i2c_get_clientdata(client); 704 long val = simple_strtol(buf, NULL, 10); 705 706 down(&data->update_lock); 707 data->autofan[nr].config = (data->autofan[nr].config & (~0xe0)) 708 | ZONE_TO_REG(val) ; 709 lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr), 710 data->autofan[nr].config); 711 up(&data->update_lock); 712 return count; 713 } 714 static ssize_t show_pwm_auto_pwm_min(struct device *dev, char *buf, int nr) 715 { 716 struct lm85_data *data = lm85_update_device(dev); 717 return sprintf(buf,"%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm)); 718 } 719 static ssize_t set_pwm_auto_pwm_min(struct device *dev, const char *buf, 720 size_t count, int nr) 721 { 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 down(&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 up(&data->update_lock); 731 return count; 732 } 733 static ssize_t show_pwm_auto_pwm_minctl(struct device *dev, char *buf, int nr) 734 { 735 struct lm85_data *data = lm85_update_device(dev); 736 return sprintf(buf,"%d\n", data->autofan[nr].min_off); 737 } 738 static ssize_t set_pwm_auto_pwm_minctl(struct device *dev, const char *buf, 739 size_t count, int nr) 740 { 741 struct i2c_client *client = to_i2c_client(dev); 742 struct lm85_data *data = i2c_get_clientdata(client); 743 long val = simple_strtol(buf, NULL, 10); 744 745 down(&data->update_lock); 746 data->autofan[nr].min_off = val; 747 lm85_write_value(client, LM85_REG_AFAN_SPIKE1, data->smooth[0] 748 | data->syncpwm3 749 | (data->autofan[0].min_off ? 0x20 : 0) 750 | (data->autofan[1].min_off ? 0x40 : 0) 751 | (data->autofan[2].min_off ? 0x80 : 0) 752 ); 753 up(&data->update_lock); 754 return count; 755 } 756 static ssize_t show_pwm_auto_pwm_freq(struct device *dev, char *buf, int nr) 757 { 758 struct lm85_data *data = lm85_update_device(dev); 759 return sprintf(buf,"%d\n", FREQ_FROM_REG(data->autofan[nr].freq)); 760 } 761 static ssize_t set_pwm_auto_pwm_freq(struct device *dev, const char *buf, 762 size_t count, int nr) 763 { 764 struct i2c_client *client = to_i2c_client(dev); 765 struct lm85_data *data = i2c_get_clientdata(client); 766 long val = simple_strtol(buf, NULL, 10); 767 768 down(&data->update_lock); 769 data->autofan[nr].freq = FREQ_TO_REG(val); 770 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 771 (data->zone[nr].range << 4) 772 | data->autofan[nr].freq 773 ); 774 up(&data->update_lock); 775 return count; 776 } 777 #define pwm_auto(offset) \ 778 static ssize_t show_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 779 char *buf) \ 780 { \ 781 return show_pwm_auto_channels(dev, buf, offset - 1); \ 782 } \ 783 static ssize_t set_pwm##offset##_auto_channels (struct device *dev, struct device_attribute *attr, \ 784 const char *buf, size_t count) \ 785 { \ 786 return set_pwm_auto_channels(dev, buf, count, offset - 1); \ 787 } \ 788 static ssize_t show_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 789 char *buf) \ 790 { \ 791 return show_pwm_auto_pwm_min(dev, buf, offset - 1); \ 792 } \ 793 static ssize_t set_pwm##offset##_auto_pwm_min (struct device *dev, struct device_attribute *attr, \ 794 const char *buf, size_t count) \ 795 { \ 796 return set_pwm_auto_pwm_min(dev, buf, count, offset - 1); \ 797 } \ 798 static ssize_t show_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 799 char *buf) \ 800 { \ 801 return show_pwm_auto_pwm_minctl(dev, buf, offset - 1); \ 802 } \ 803 static ssize_t set_pwm##offset##_auto_pwm_minctl (struct device *dev, struct device_attribute *attr, \ 804 const char *buf, size_t count) \ 805 { \ 806 return set_pwm_auto_pwm_minctl(dev, buf, count, offset - 1); \ 807 } \ 808 static ssize_t show_pwm##offset##_auto_pwm_freq (struct device *dev, struct device_attribute *attr, \ 809 char *buf) \ 810 { \ 811 return show_pwm_auto_pwm_freq(dev, buf, offset - 1); \ 812 } \ 813 static ssize_t set_pwm##offset##_auto_pwm_freq(struct device *dev, struct device_attribute *attr, \ 814 const char *buf, size_t count) \ 815 { \ 816 return set_pwm_auto_pwm_freq(dev, buf, count, offset - 1); \ 817 } \ 818 static DEVICE_ATTR(pwm##offset##_auto_channels, S_IRUGO | S_IWUSR, \ 819 show_pwm##offset##_auto_channels, \ 820 set_pwm##offset##_auto_channels); \ 821 static DEVICE_ATTR(pwm##offset##_auto_pwm_min, S_IRUGO | S_IWUSR, \ 822 show_pwm##offset##_auto_pwm_min, \ 823 set_pwm##offset##_auto_pwm_min); \ 824 static DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, S_IRUGO | S_IWUSR, \ 825 show_pwm##offset##_auto_pwm_minctl, \ 826 set_pwm##offset##_auto_pwm_minctl); \ 827 static DEVICE_ATTR(pwm##offset##_auto_pwm_freq, S_IRUGO | S_IWUSR, \ 828 show_pwm##offset##_auto_pwm_freq, \ 829 set_pwm##offset##_auto_pwm_freq); 830 pwm_auto(1); 831 pwm_auto(2); 832 pwm_auto(3); 833 834 /* Temperature settings for automatic PWM control */ 835 836 static ssize_t show_temp_auto_temp_off(struct device *dev, char *buf, int nr) 837 { 838 struct lm85_data *data = lm85_update_device(dev); 839 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) - 840 HYST_FROM_REG(data->zone[nr].hyst)); 841 } 842 static ssize_t set_temp_auto_temp_off(struct device *dev, const char *buf, 843 size_t count, int nr) 844 { 845 struct i2c_client *client = to_i2c_client(dev); 846 struct lm85_data *data = i2c_get_clientdata(client); 847 int min; 848 long val = simple_strtol(buf, NULL, 10); 849 850 down(&data->update_lock); 851 min = TEMP_FROM_REG(data->zone[nr].limit); 852 data->zone[nr].off_desired = TEMP_TO_REG(val); 853 data->zone[nr].hyst = HYST_TO_REG(min - val); 854 if ( nr == 0 || nr == 1 ) { 855 lm85_write_value(client, LM85_REG_AFAN_HYST1, 856 (data->zone[0].hyst << 4) 857 | data->zone[1].hyst 858 ); 859 } else { 860 lm85_write_value(client, LM85_REG_AFAN_HYST2, 861 (data->zone[2].hyst << 4) 862 ); 863 } 864 up(&data->update_lock); 865 return count; 866 } 867 static ssize_t show_temp_auto_temp_min(struct device *dev, char *buf, int nr) 868 { 869 struct lm85_data *data = lm85_update_device(dev); 870 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) ); 871 } 872 static ssize_t set_temp_auto_temp_min(struct device *dev, const char *buf, 873 size_t count, int nr) 874 { 875 struct i2c_client *client = to_i2c_client(dev); 876 struct lm85_data *data = i2c_get_clientdata(client); 877 long val = simple_strtol(buf, NULL, 10); 878 879 down(&data->update_lock); 880 data->zone[nr].limit = TEMP_TO_REG(val); 881 lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr), 882 data->zone[nr].limit); 883 884 /* Update temp_auto_max and temp_auto_range */ 885 data->zone[nr].range = RANGE_TO_REG( 886 TEMP_FROM_REG(data->zone[nr].max_desired) - 887 TEMP_FROM_REG(data->zone[nr].limit)); 888 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 889 ((data->zone[nr].range & 0x0f) << 4) 890 | (data->autofan[nr].freq & 0x07)); 891 892 /* Update temp_auto_hyst and temp_auto_off */ 893 data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG( 894 data->zone[nr].limit) - TEMP_FROM_REG( 895 data->zone[nr].off_desired)); 896 if ( nr == 0 || nr == 1 ) { 897 lm85_write_value(client, LM85_REG_AFAN_HYST1, 898 (data->zone[0].hyst << 4) 899 | data->zone[1].hyst 900 ); 901 } else { 902 lm85_write_value(client, LM85_REG_AFAN_HYST2, 903 (data->zone[2].hyst << 4) 904 ); 905 } 906 up(&data->update_lock); 907 return count; 908 } 909 static ssize_t show_temp_auto_temp_max(struct device *dev, char *buf, int nr) 910 { 911 struct lm85_data *data = lm85_update_device(dev); 912 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].limit) + 913 RANGE_FROM_REG(data->zone[nr].range)); 914 } 915 static ssize_t set_temp_auto_temp_max(struct device *dev, const char *buf, 916 size_t count, int nr) 917 { 918 struct i2c_client *client = to_i2c_client(dev); 919 struct lm85_data *data = i2c_get_clientdata(client); 920 int min; 921 long val = simple_strtol(buf, NULL, 10); 922 923 down(&data->update_lock); 924 min = TEMP_FROM_REG(data->zone[nr].limit); 925 data->zone[nr].max_desired = TEMP_TO_REG(val); 926 data->zone[nr].range = RANGE_TO_REG( 927 val - min); 928 lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), 929 ((data->zone[nr].range & 0x0f) << 4) 930 | (data->autofan[nr].freq & 0x07)); 931 up(&data->update_lock); 932 return count; 933 } 934 static ssize_t show_temp_auto_temp_crit(struct device *dev, char *buf, int nr) 935 { 936 struct lm85_data *data = lm85_update_device(dev); 937 return sprintf(buf,"%d\n", TEMP_FROM_REG(data->zone[nr].critical)); 938 } 939 static ssize_t set_temp_auto_temp_crit(struct device *dev, const char *buf, 940 size_t count, int nr) 941 { 942 struct i2c_client *client = to_i2c_client(dev); 943 struct lm85_data *data = i2c_get_clientdata(client); 944 long val = simple_strtol(buf, NULL, 10); 945 946 down(&data->update_lock); 947 data->zone[nr].critical = TEMP_TO_REG(val); 948 lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr), 949 data->zone[nr].critical); 950 up(&data->update_lock); 951 return count; 952 } 953 #define temp_auto(offset) \ 954 static ssize_t show_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 955 char *buf) \ 956 { \ 957 return show_temp_auto_temp_off(dev, buf, offset - 1); \ 958 } \ 959 static ssize_t set_temp##offset##_auto_temp_off (struct device *dev, struct device_attribute *attr, \ 960 const char *buf, size_t count) \ 961 { \ 962 return set_temp_auto_temp_off(dev, buf, count, offset - 1); \ 963 } \ 964 static ssize_t show_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 965 char *buf) \ 966 { \ 967 return show_temp_auto_temp_min(dev, buf, offset - 1); \ 968 } \ 969 static ssize_t set_temp##offset##_auto_temp_min (struct device *dev, struct device_attribute *attr, \ 970 const char *buf, size_t count) \ 971 { \ 972 return set_temp_auto_temp_min(dev, buf, count, offset - 1); \ 973 } \ 974 static ssize_t show_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 975 char *buf) \ 976 { \ 977 return show_temp_auto_temp_max(dev, buf, offset - 1); \ 978 } \ 979 static ssize_t set_temp##offset##_auto_temp_max (struct device *dev, struct device_attribute *attr, \ 980 const char *buf, size_t count) \ 981 { \ 982 return set_temp_auto_temp_max(dev, buf, count, offset - 1); \ 983 } \ 984 static ssize_t show_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 985 char *buf) \ 986 { \ 987 return show_temp_auto_temp_crit(dev, buf, offset - 1); \ 988 } \ 989 static ssize_t set_temp##offset##_auto_temp_crit (struct device *dev, struct device_attribute *attr, \ 990 const char *buf, size_t count) \ 991 { \ 992 return set_temp_auto_temp_crit(dev, buf, count, offset - 1); \ 993 } \ 994 static DEVICE_ATTR(temp##offset##_auto_temp_off, S_IRUGO | S_IWUSR, \ 995 show_temp##offset##_auto_temp_off, \ 996 set_temp##offset##_auto_temp_off); \ 997 static DEVICE_ATTR(temp##offset##_auto_temp_min, S_IRUGO | S_IWUSR, \ 998 show_temp##offset##_auto_temp_min, \ 999 set_temp##offset##_auto_temp_min); \ 1000 static DEVICE_ATTR(temp##offset##_auto_temp_max, S_IRUGO | S_IWUSR, \ 1001 show_temp##offset##_auto_temp_max, \ 1002 set_temp##offset##_auto_temp_max); \ 1003 static DEVICE_ATTR(temp##offset##_auto_temp_crit, S_IRUGO | S_IWUSR, \ 1004 show_temp##offset##_auto_temp_crit, \ 1005 set_temp##offset##_auto_temp_crit); 1006 temp_auto(1); 1007 temp_auto(2); 1008 temp_auto(3); 1009 1010 int lm85_attach_adapter(struct i2c_adapter *adapter) 1011 { 1012 if (!(adapter->class & I2C_CLASS_HWMON)) 1013 return 0; 1014 return i2c_probe(adapter, &addr_data, lm85_detect); 1015 } 1016 1017 int lm85_detect(struct i2c_adapter *adapter, int address, 1018 int kind) 1019 { 1020 int company, verstep ; 1021 struct i2c_client *new_client = NULL; 1022 struct lm85_data *data; 1023 int err = 0; 1024 const char *type_name = ""; 1025 1026 if (!i2c_check_functionality(adapter, 1027 I2C_FUNC_SMBUS_BYTE_DATA)) { 1028 /* We need to be able to do byte I/O */ 1029 goto ERROR0 ; 1030 }; 1031 1032 /* OK. For now, we presume we have a valid client. We now create the 1033 client structure, even though we cannot fill it completely yet. 1034 But it allows us to access lm85_{read,write}_value. */ 1035 1036 if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) { 1037 err = -ENOMEM; 1038 goto ERROR0; 1039 } 1040 1041 new_client = &data->client; 1042 i2c_set_clientdata(new_client, data); 1043 new_client->addr = address; 1044 new_client->adapter = adapter; 1045 new_client->driver = &lm85_driver; 1046 new_client->flags = 0; 1047 1048 /* Now, we do the remaining detection. */ 1049 1050 company = lm85_read_value(new_client, LM85_REG_COMPANY); 1051 verstep = lm85_read_value(new_client, LM85_REG_VERSTEP); 1052 1053 dev_dbg(&adapter->dev, "Detecting device at %d,0x%02x with" 1054 " COMPANY: 0x%02x and VERSTEP: 0x%02x\n", 1055 i2c_adapter_id(new_client->adapter), new_client->addr, 1056 company, verstep); 1057 1058 /* If auto-detecting, Determine the chip type. */ 1059 if (kind <= 0) { 1060 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x ...\n", 1061 i2c_adapter_id(adapter), address ); 1062 if( company == LM85_COMPANY_NATIONAL 1063 && verstep == LM85_VERSTEP_LM85C ) { 1064 kind = lm85c ; 1065 } else if( company == LM85_COMPANY_NATIONAL 1066 && verstep == LM85_VERSTEP_LM85B ) { 1067 kind = lm85b ; 1068 } else if( company == LM85_COMPANY_NATIONAL 1069 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1070 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1071 " Defaulting to LM85.\n", verstep); 1072 kind = any_chip ; 1073 } else if( company == LM85_COMPANY_ANALOG_DEV 1074 && verstep == LM85_VERSTEP_ADM1027 ) { 1075 kind = adm1027 ; 1076 } else if( company == LM85_COMPANY_ANALOG_DEV 1077 && (verstep == LM85_VERSTEP_ADT7463 1078 || verstep == LM85_VERSTEP_ADT7463C) ) { 1079 kind = adt7463 ; 1080 } else if( company == LM85_COMPANY_ANALOG_DEV 1081 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC ) { 1082 dev_err(&adapter->dev, "Unrecognized version/stepping 0x%02x" 1083 " Defaulting to Generic LM85.\n", verstep ); 1084 kind = any_chip ; 1085 } else if( company == LM85_COMPANY_SMSC 1086 && (verstep == LM85_VERSTEP_EMC6D100_A0 1087 || verstep == LM85_VERSTEP_EMC6D100_A1) ) { 1088 /* Unfortunately, we can't tell a '100 from a '101 1089 * from the registers. Since a '101 is a '100 1090 * in a package with fewer pins and therefore no 1091 * 3.3V, 1.5V or 1.8V inputs, perhaps if those 1092 * inputs read 0, then it's a '101. 1093 */ 1094 kind = emc6d100 ; 1095 } else if( company == LM85_COMPANY_SMSC 1096 && verstep == LM85_VERSTEP_EMC6D102) { 1097 kind = emc6d102 ; 1098 } else if( company == LM85_COMPANY_SMSC 1099 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1100 dev_err(&adapter->dev, "lm85: Detected SMSC chip\n"); 1101 dev_err(&adapter->dev, "lm85: Unrecognized version/stepping 0x%02x" 1102 " Defaulting to Generic LM85.\n", verstep ); 1103 kind = any_chip ; 1104 } else if( kind == any_chip 1105 && (verstep & LM85_VERSTEP_VMASK) == LM85_VERSTEP_GENERIC) { 1106 dev_err(&adapter->dev, "Generic LM85 Version 6 detected\n"); 1107 /* Leave kind as "any_chip" */ 1108 } else { 1109 dev_dbg(&adapter->dev, "Autodetection failed\n"); 1110 /* Not an LM85 ... */ 1111 if( kind == any_chip ) { /* User used force=x,y */ 1112 dev_err(&adapter->dev, "Generic LM85 Version 6 not" 1113 " found at %d,0x%02x. Try force_lm85c.\n", 1114 i2c_adapter_id(adapter), address ); 1115 } 1116 err = 0 ; 1117 goto ERROR1; 1118 } 1119 } 1120 1121 /* Fill in the chip specific driver values */ 1122 if ( kind == any_chip ) { 1123 type_name = "lm85"; 1124 } else if ( kind == lm85b ) { 1125 type_name = "lm85b"; 1126 } else if ( kind == lm85c ) { 1127 type_name = "lm85c"; 1128 } else if ( kind == adm1027 ) { 1129 type_name = "adm1027"; 1130 } else if ( kind == adt7463 ) { 1131 type_name = "adt7463"; 1132 } else if ( kind == emc6d100){ 1133 type_name = "emc6d100"; 1134 } else if ( kind == emc6d102 ) { 1135 type_name = "emc6d102"; 1136 } 1137 strlcpy(new_client->name, type_name, I2C_NAME_SIZE); 1138 1139 /* Fill in the remaining client fields */ 1140 data->type = kind; 1141 data->valid = 0; 1142 init_MUTEX(&data->update_lock); 1143 1144 /* Tell the I2C layer a new client has arrived */ 1145 if ((err = i2c_attach_client(new_client))) 1146 goto ERROR1; 1147 1148 /* Set the VRM version */ 1149 data->vrm = vid_which_vrm(); 1150 1151 /* Initialize the LM85 chip */ 1152 lm85_init_client(new_client); 1153 1154 /* Register sysfs hooks */ 1155 data->class_dev = hwmon_device_register(&new_client->dev); 1156 if (IS_ERR(data->class_dev)) { 1157 err = PTR_ERR(data->class_dev); 1158 goto ERROR2; 1159 } 1160 1161 device_create_file(&new_client->dev, &dev_attr_fan1_input); 1162 device_create_file(&new_client->dev, &dev_attr_fan2_input); 1163 device_create_file(&new_client->dev, &dev_attr_fan3_input); 1164 device_create_file(&new_client->dev, &dev_attr_fan4_input); 1165 device_create_file(&new_client->dev, &dev_attr_fan1_min); 1166 device_create_file(&new_client->dev, &dev_attr_fan2_min); 1167 device_create_file(&new_client->dev, &dev_attr_fan3_min); 1168 device_create_file(&new_client->dev, &dev_attr_fan4_min); 1169 device_create_file(&new_client->dev, &dev_attr_pwm1); 1170 device_create_file(&new_client->dev, &dev_attr_pwm2); 1171 device_create_file(&new_client->dev, &dev_attr_pwm3); 1172 device_create_file(&new_client->dev, &dev_attr_pwm1_enable); 1173 device_create_file(&new_client->dev, &dev_attr_pwm2_enable); 1174 device_create_file(&new_client->dev, &dev_attr_pwm3_enable); 1175 device_create_file(&new_client->dev, &dev_attr_in0_input); 1176 device_create_file(&new_client->dev, &dev_attr_in1_input); 1177 device_create_file(&new_client->dev, &dev_attr_in2_input); 1178 device_create_file(&new_client->dev, &dev_attr_in3_input); 1179 device_create_file(&new_client->dev, &dev_attr_in4_input); 1180 device_create_file(&new_client->dev, &dev_attr_in0_min); 1181 device_create_file(&new_client->dev, &dev_attr_in1_min); 1182 device_create_file(&new_client->dev, &dev_attr_in2_min); 1183 device_create_file(&new_client->dev, &dev_attr_in3_min); 1184 device_create_file(&new_client->dev, &dev_attr_in4_min); 1185 device_create_file(&new_client->dev, &dev_attr_in0_max); 1186 device_create_file(&new_client->dev, &dev_attr_in1_max); 1187 device_create_file(&new_client->dev, &dev_attr_in2_max); 1188 device_create_file(&new_client->dev, &dev_attr_in3_max); 1189 device_create_file(&new_client->dev, &dev_attr_in4_max); 1190 device_create_file(&new_client->dev, &dev_attr_temp1_input); 1191 device_create_file(&new_client->dev, &dev_attr_temp2_input); 1192 device_create_file(&new_client->dev, &dev_attr_temp3_input); 1193 device_create_file(&new_client->dev, &dev_attr_temp1_min); 1194 device_create_file(&new_client->dev, &dev_attr_temp2_min); 1195 device_create_file(&new_client->dev, &dev_attr_temp3_min); 1196 device_create_file(&new_client->dev, &dev_attr_temp1_max); 1197 device_create_file(&new_client->dev, &dev_attr_temp2_max); 1198 device_create_file(&new_client->dev, &dev_attr_temp3_max); 1199 device_create_file(&new_client->dev, &dev_attr_vrm); 1200 device_create_file(&new_client->dev, &dev_attr_cpu0_vid); 1201 device_create_file(&new_client->dev, &dev_attr_alarms); 1202 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_channels); 1203 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_channels); 1204 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_channels); 1205 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_min); 1206 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_min); 1207 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_min); 1208 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_minctl); 1209 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_minctl); 1210 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_minctl); 1211 device_create_file(&new_client->dev, &dev_attr_pwm1_auto_pwm_freq); 1212 device_create_file(&new_client->dev, &dev_attr_pwm2_auto_pwm_freq); 1213 device_create_file(&new_client->dev, &dev_attr_pwm3_auto_pwm_freq); 1214 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_off); 1215 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_off); 1216 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_off); 1217 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_min); 1218 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_min); 1219 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_min); 1220 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_max); 1221 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_max); 1222 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_max); 1223 device_create_file(&new_client->dev, &dev_attr_temp1_auto_temp_crit); 1224 device_create_file(&new_client->dev, &dev_attr_temp2_auto_temp_crit); 1225 device_create_file(&new_client->dev, &dev_attr_temp3_auto_temp_crit); 1226 1227 return 0; 1228 1229 /* Error out and cleanup code */ 1230 ERROR2: 1231 i2c_detach_client(new_client); 1232 ERROR1: 1233 kfree(data); 1234 ERROR0: 1235 return err; 1236 } 1237 1238 int lm85_detach_client(struct i2c_client *client) 1239 { 1240 struct lm85_data *data = i2c_get_clientdata(client); 1241 hwmon_device_unregister(data->class_dev); 1242 i2c_detach_client(client); 1243 kfree(data); 1244 return 0; 1245 } 1246 1247 1248 int lm85_read_value(struct i2c_client *client, u8 reg) 1249 { 1250 int res; 1251 1252 /* What size location is it? */ 1253 switch( reg ) { 1254 case LM85_REG_FAN(0) : /* Read WORD data */ 1255 case LM85_REG_FAN(1) : 1256 case LM85_REG_FAN(2) : 1257 case LM85_REG_FAN(3) : 1258 case LM85_REG_FAN_MIN(0) : 1259 case LM85_REG_FAN_MIN(1) : 1260 case LM85_REG_FAN_MIN(2) : 1261 case LM85_REG_FAN_MIN(3) : 1262 case LM85_REG_ALARM1 : /* Read both bytes at once */ 1263 res = i2c_smbus_read_byte_data(client, reg) & 0xff ; 1264 res |= i2c_smbus_read_byte_data(client, reg+1) << 8 ; 1265 break ; 1266 case ADT7463_REG_TMIN_CTL1 : /* Read WORD MSB, LSB */ 1267 res = i2c_smbus_read_byte_data(client, reg) << 8 ; 1268 res |= i2c_smbus_read_byte_data(client, reg+1) & 0xff ; 1269 break ; 1270 default: /* Read BYTE data */ 1271 res = i2c_smbus_read_byte_data(client, reg); 1272 break ; 1273 } 1274 1275 return res ; 1276 } 1277 1278 int lm85_write_value(struct i2c_client *client, u8 reg, int value) 1279 { 1280 int res ; 1281 1282 switch( reg ) { 1283 case LM85_REG_FAN(0) : /* Write WORD data */ 1284 case LM85_REG_FAN(1) : 1285 case LM85_REG_FAN(2) : 1286 case LM85_REG_FAN(3) : 1287 case LM85_REG_FAN_MIN(0) : 1288 case LM85_REG_FAN_MIN(1) : 1289 case LM85_REG_FAN_MIN(2) : 1290 case LM85_REG_FAN_MIN(3) : 1291 /* NOTE: ALARM is read only, so not included here */ 1292 res = i2c_smbus_write_byte_data(client, reg, value & 0xff) ; 1293 res |= i2c_smbus_write_byte_data(client, reg+1, (value>>8) & 0xff) ; 1294 break ; 1295 case ADT7463_REG_TMIN_CTL1 : /* Write WORD MSB, LSB */ 1296 res = i2c_smbus_write_byte_data(client, reg, (value>>8) & 0xff); 1297 res |= i2c_smbus_write_byte_data(client, reg+1, value & 0xff) ; 1298 break ; 1299 default: /* Write BYTE data */ 1300 res = i2c_smbus_write_byte_data(client, reg, value); 1301 break ; 1302 } 1303 1304 return res ; 1305 } 1306 1307 void lm85_init_client(struct i2c_client *client) 1308 { 1309 int value; 1310 struct lm85_data *data = i2c_get_clientdata(client); 1311 1312 dev_dbg(&client->dev, "Initializing device\n"); 1313 1314 /* Warn if part was not "READY" */ 1315 value = lm85_read_value(client, LM85_REG_CONFIG); 1316 dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value); 1317 if( value & 0x02 ) { 1318 dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n", 1319 i2c_adapter_id(client->adapter), client->addr ); 1320 }; 1321 if( ! (value & 0x04) ) { 1322 dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n", 1323 i2c_adapter_id(client->adapter), client->addr ); 1324 }; 1325 if( value & 0x10 1326 && ( data->type == adm1027 1327 || data->type == adt7463 ) ) { 1328 dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. " 1329 "Please report this to the lm85 maintainer.\n", 1330 i2c_adapter_id(client->adapter), client->addr ); 1331 }; 1332 1333 /* WE INTENTIONALLY make no changes to the limits, 1334 * offsets, pwms, fans and zones. If they were 1335 * configured, we don't want to mess with them. 1336 * If they weren't, the default is 100% PWM, no 1337 * control and will suffice until 'sensors -s' 1338 * can be run by the user. 1339 */ 1340 1341 /* Start monitoring */ 1342 value = lm85_read_value(client, LM85_REG_CONFIG); 1343 /* Try to clear LOCK, Set START, save everything else */ 1344 value = (value & ~ 0x02) | 0x01 ; 1345 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value); 1346 lm85_write_value(client, LM85_REG_CONFIG, value); 1347 } 1348 1349 static struct lm85_data *lm85_update_device(struct device *dev) 1350 { 1351 struct i2c_client *client = to_i2c_client(dev); 1352 struct lm85_data *data = i2c_get_clientdata(client); 1353 int i; 1354 1355 down(&data->update_lock); 1356 1357 if ( !data->valid || 1358 time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL) ) { 1359 /* Things that change quickly */ 1360 dev_dbg(&client->dev, "Reading sensor values\n"); 1361 1362 /* Have to read extended bits first to "freeze" the 1363 * more significant bits that are read later. 1364 */ 1365 if ( (data->type == adm1027) || (data->type == adt7463) ) { 1366 int ext1 = lm85_read_value(client, 1367 ADM1027_REG_EXTEND_ADC1); 1368 int ext2 = lm85_read_value(client, 1369 ADM1027_REG_EXTEND_ADC2); 1370 int val = (ext1 << 8) + ext2; 1371 1372 for(i = 0; i <= 4; i++) 1373 data->in_ext[i] = (val>>(i * 2))&0x03; 1374 1375 for(i = 0; i <= 2; i++) 1376 data->temp_ext[i] = (val>>((i + 5) * 2))&0x03; 1377 } 1378 1379 /* adc_scale is 2^(number of LSBs). There are 4 extra bits in 1380 the emc6d102 and 2 in the adt7463 and adm1027. In all 1381 other chips ext is always 0 and the value of scale is 1382 irrelevant. So it is left in 4*/ 1383 data->adc_scale = (data->type == emc6d102 ) ? 16 : 4; 1384 1385 for (i = 0; i <= 4; ++i) { 1386 data->in[i] = 1387 lm85_read_value(client, LM85_REG_IN(i)); 1388 } 1389 1390 for (i = 0; i <= 3; ++i) { 1391 data->fan[i] = 1392 lm85_read_value(client, LM85_REG_FAN(i)); 1393 } 1394 1395 for (i = 0; i <= 2; ++i) { 1396 data->temp[i] = 1397 lm85_read_value(client, LM85_REG_TEMP(i)); 1398 } 1399 1400 for (i = 0; i <= 2; ++i) { 1401 data->pwm[i] = 1402 lm85_read_value(client, LM85_REG_PWM(i)); 1403 } 1404 1405 data->alarms = lm85_read_value(client, LM85_REG_ALARM1); 1406 1407 if ( data->type == adt7463 ) { 1408 if( data->therm_total < ULONG_MAX - 256 ) { 1409 data->therm_total += 1410 lm85_read_value(client, ADT7463_REG_THERM ); 1411 } 1412 } else if ( data->type == emc6d100 ) { 1413 /* Three more voltage sensors */ 1414 for (i = 5; i <= 7; ++i) { 1415 data->in[i] = 1416 lm85_read_value(client, EMC6D100_REG_IN(i)); 1417 } 1418 /* More alarm bits */ 1419 data->alarms |= 1420 lm85_read_value(client, EMC6D100_REG_ALARM3) << 16; 1421 } else if (data->type == emc6d102 ) { 1422 /* Have to read LSB bits after the MSB ones because 1423 the reading of the MSB bits has frozen the 1424 LSBs (backward from the ADM1027). 1425 */ 1426 int ext1 = lm85_read_value(client, 1427 EMC6D102_REG_EXTEND_ADC1); 1428 int ext2 = lm85_read_value(client, 1429 EMC6D102_REG_EXTEND_ADC2); 1430 int ext3 = lm85_read_value(client, 1431 EMC6D102_REG_EXTEND_ADC3); 1432 int ext4 = lm85_read_value(client, 1433 EMC6D102_REG_EXTEND_ADC4); 1434 data->in_ext[0] = ext3 & 0x0f; 1435 data->in_ext[1] = ext4 & 0x0f; 1436 data->in_ext[2] = (ext4 >> 4) & 0x0f; 1437 data->in_ext[3] = (ext3 >> 4) & 0x0f; 1438 data->in_ext[4] = (ext2 >> 4) & 0x0f; 1439 1440 data->temp_ext[0] = ext1 & 0x0f; 1441 data->temp_ext[1] = ext2 & 0x0f; 1442 data->temp_ext[2] = (ext1 >> 4) & 0x0f; 1443 } 1444 1445 data->last_reading = jiffies ; 1446 }; /* last_reading */ 1447 1448 if ( !data->valid || 1449 time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL) ) { 1450 /* Things that don't change often */ 1451 dev_dbg(&client->dev, "Reading config values\n"); 1452 1453 for (i = 0; i <= 4; ++i) { 1454 data->in_min[i] = 1455 lm85_read_value(client, LM85_REG_IN_MIN(i)); 1456 data->in_max[i] = 1457 lm85_read_value(client, LM85_REG_IN_MAX(i)); 1458 } 1459 1460 if ( data->type == emc6d100 ) { 1461 for (i = 5; i <= 7; ++i) { 1462 data->in_min[i] = 1463 lm85_read_value(client, EMC6D100_REG_IN_MIN(i)); 1464 data->in_max[i] = 1465 lm85_read_value(client, EMC6D100_REG_IN_MAX(i)); 1466 } 1467 } 1468 1469 for (i = 0; i <= 3; ++i) { 1470 data->fan_min[i] = 1471 lm85_read_value(client, LM85_REG_FAN_MIN(i)); 1472 } 1473 1474 for (i = 0; i <= 2; ++i) { 1475 data->temp_min[i] = 1476 lm85_read_value(client, LM85_REG_TEMP_MIN(i)); 1477 data->temp_max[i] = 1478 lm85_read_value(client, LM85_REG_TEMP_MAX(i)); 1479 } 1480 1481 data->vid = lm85_read_value(client, LM85_REG_VID); 1482 1483 for (i = 0; i <= 2; ++i) { 1484 int val ; 1485 data->autofan[i].config = 1486 lm85_read_value(client, LM85_REG_AFAN_CONFIG(i)); 1487 val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i)); 1488 data->autofan[i].freq = val & 0x07 ; 1489 data->zone[i].range = (val >> 4) & 0x0f ; 1490 data->autofan[i].min_pwm = 1491 lm85_read_value(client, LM85_REG_AFAN_MINPWM(i)); 1492 data->zone[i].limit = 1493 lm85_read_value(client, LM85_REG_AFAN_LIMIT(i)); 1494 data->zone[i].critical = 1495 lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i)); 1496 } 1497 1498 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1); 1499 data->smooth[0] = i & 0x0f ; 1500 data->syncpwm3 = i & 0x10 ; /* Save PWM3 config */ 1501 data->autofan[0].min_off = (i & 0x20) != 0 ; 1502 data->autofan[1].min_off = (i & 0x40) != 0 ; 1503 data->autofan[2].min_off = (i & 0x80) != 0 ; 1504 i = lm85_read_value(client, LM85_REG_AFAN_SPIKE2); 1505 data->smooth[1] = (i>>4) & 0x0f ; 1506 data->smooth[2] = i & 0x0f ; 1507 1508 i = lm85_read_value(client, LM85_REG_AFAN_HYST1); 1509 data->zone[0].hyst = (i>>4) & 0x0f ; 1510 data->zone[1].hyst = i & 0x0f ; 1511 1512 i = lm85_read_value(client, LM85_REG_AFAN_HYST2); 1513 data->zone[2].hyst = (i>>4) & 0x0f ; 1514 1515 if ( (data->type == lm85b) || (data->type == lm85c) ) { 1516 data->tach_mode = lm85_read_value(client, 1517 LM85_REG_TACH_MODE ); 1518 data->spinup_ctl = lm85_read_value(client, 1519 LM85_REG_SPINUP_CTL ); 1520 } else if ( (data->type == adt7463) || (data->type == adm1027) ) { 1521 if ( data->type == adt7463 ) { 1522 for (i = 0; i <= 2; ++i) { 1523 data->oppoint[i] = lm85_read_value(client, 1524 ADT7463_REG_OPPOINT(i) ); 1525 } 1526 data->tmin_ctl = lm85_read_value(client, 1527 ADT7463_REG_TMIN_CTL1 ); 1528 data->therm_limit = lm85_read_value(client, 1529 ADT7463_REG_THERM_LIMIT ); 1530 } 1531 for (i = 0; i <= 2; ++i) { 1532 data->temp_offset[i] = lm85_read_value(client, 1533 ADM1027_REG_TEMP_OFFSET(i) ); 1534 } 1535 data->tach_mode = lm85_read_value(client, 1536 ADM1027_REG_CONFIG3 ); 1537 data->fan_ppr = lm85_read_value(client, 1538 ADM1027_REG_FAN_PPR ); 1539 } 1540 1541 data->last_config = jiffies; 1542 }; /* last_config */ 1543 1544 data->valid = 1; 1545 1546 up(&data->update_lock); 1547 1548 return data; 1549 } 1550 1551 1552 static int __init sm_lm85_init(void) 1553 { 1554 return i2c_add_driver(&lm85_driver); 1555 } 1556 1557 static void __exit sm_lm85_exit(void) 1558 { 1559 i2c_del_driver(&lm85_driver); 1560 } 1561 1562 /* Thanks to Richard Barrington for adding the LM85 to sensors-detect. 1563 * Thanks to Margit Schubert-While <margitsw@t-online.de> for help with 1564 * post 2.7.0 CVS changes. 1565 */ 1566 MODULE_LICENSE("GPL"); 1567 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, Margit Schubert-While <margitsw@t-online.de>, Justin Thiessen <jthiessen@penguincomputing.com"); 1568 MODULE_DESCRIPTION("LM85-B, LM85-C driver"); 1569 1570 module_init(sm_lm85_init); 1571 module_exit(sm_lm85_exit); 1572