1 /* 2 * lm63.c - driver for the National Semiconductor LM63 temperature sensor 3 * with integrated fan control 4 * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de> 5 * Based on the lm90 driver. 6 * 7 * The LM63 is a sensor chip made by National Semiconductor. It measures 8 * two temperatures (its own and one external one) and the speed of one 9 * fan, those speed it can additionally control. Complete datasheet can be 10 * obtained from National's website at: 11 * http://www.national.com/pf/LM/LM63.html 12 * 13 * The LM63 is basically an LM86 with fan speed monitoring and control 14 * capabilities added. It misses some of the LM86 features though: 15 * - No low limit for local temperature. 16 * - No critical limit for local temperature. 17 * - Critical limit for remote temperature can be changed only once. We 18 * will consider that the critical limit is read-only. 19 * 20 * The datasheet isn't very clear about what the tachometer reading is. 21 * I had a explanation from National Semiconductor though. The two lower 22 * bits of the read value have to be masked out. The value is still 16 bit 23 * in width. 24 * 25 * This program is free software; you can redistribute it and/or modify 26 * it under the terms of the GNU General Public License as published by 27 * the Free Software Foundation; either version 2 of the License, or 28 * (at your option) any later version. 29 * 30 * This program is distributed in the hope that it will be useful, 31 * but WITHOUT ANY WARRANTY; without even the implied warranty of 32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 33 * GNU General Public License for more details. 34 * 35 * You should have received a copy of the GNU General Public License 36 * along with this program; if not, write to the Free Software 37 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 38 */ 39 40 #include <linux/module.h> 41 #include <linux/init.h> 42 #include <linux/slab.h> 43 #include <linux/jiffies.h> 44 #include <linux/i2c.h> 45 #include <linux/hwmon-sysfs.h> 46 #include <linux/hwmon.h> 47 #include <linux/err.h> 48 #include <linux/mutex.h> 49 #include <linux/sysfs.h> 50 #include <linux/types.h> 51 52 /* 53 * Addresses to scan 54 * Address is fully defined internally and cannot be changed except for 55 * LM64 which has one pin dedicated to address selection. 56 * LM63 and LM96163 have address 0x4c. 57 * LM64 can have address 0x18 or 0x4e. 58 */ 59 60 static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; 61 62 /* 63 * The LM63 registers 64 */ 65 66 #define LM63_REG_CONFIG1 0x03 67 #define LM63_REG_CONVRATE 0x04 68 #define LM63_REG_CONFIG2 0xBF 69 #define LM63_REG_CONFIG_FAN 0x4A 70 71 #define LM63_REG_TACH_COUNT_MSB 0x47 72 #define LM63_REG_TACH_COUNT_LSB 0x46 73 #define LM63_REG_TACH_LIMIT_MSB 0x49 74 #define LM63_REG_TACH_LIMIT_LSB 0x48 75 76 #define LM63_REG_PWM_VALUE 0x4C 77 #define LM63_REG_PWM_FREQ 0x4D 78 #define LM63_REG_LUT_TEMP_HYST 0x4F 79 #define LM63_REG_LUT_TEMP(nr) (0x50 + 2 * (nr)) 80 #define LM63_REG_LUT_PWM(nr) (0x51 + 2 * (nr)) 81 82 #define LM63_REG_LOCAL_TEMP 0x00 83 #define LM63_REG_LOCAL_HIGH 0x05 84 85 #define LM63_REG_REMOTE_TEMP_MSB 0x01 86 #define LM63_REG_REMOTE_TEMP_LSB 0x10 87 #define LM63_REG_REMOTE_OFFSET_MSB 0x11 88 #define LM63_REG_REMOTE_OFFSET_LSB 0x12 89 #define LM63_REG_REMOTE_HIGH_MSB 0x07 90 #define LM63_REG_REMOTE_HIGH_LSB 0x13 91 #define LM63_REG_REMOTE_LOW_MSB 0x08 92 #define LM63_REG_REMOTE_LOW_LSB 0x14 93 #define LM63_REG_REMOTE_TCRIT 0x19 94 #define LM63_REG_REMOTE_TCRIT_HYST 0x21 95 96 #define LM63_REG_ALERT_STATUS 0x02 97 #define LM63_REG_ALERT_MASK 0x16 98 99 #define LM63_REG_MAN_ID 0xFE 100 #define LM63_REG_CHIP_ID 0xFF 101 102 #define LM96163_REG_TRUTHERM 0x30 103 #define LM96163_REG_REMOTE_TEMP_U_MSB 0x31 104 #define LM96163_REG_REMOTE_TEMP_U_LSB 0x32 105 #define LM96163_REG_CONFIG_ENHANCED 0x45 106 107 #define LM63_MAX_CONVRATE 9 108 109 #define LM63_MAX_CONVRATE_HZ 32 110 #define LM96163_MAX_CONVRATE_HZ 26 111 112 /* 113 * Conversions and various macros 114 * For tachometer counts, the LM63 uses 16-bit values. 115 * For local temperature and high limit, remote critical limit and hysteresis 116 * value, it uses signed 8-bit values with LSB = 1 degree Celsius. 117 * For remote temperature, low and high limits, it uses signed 11-bit values 118 * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. 119 * For LM64 the actual remote diode temperature is 16 degree Celsius higher 120 * than the register reading. Remote temperature setpoints have to be 121 * adapted accordingly. 122 */ 123 124 #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ 125 5400000 / (reg)) 126 #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ 127 (5400000 / (val)) & 0xFFFC) 128 #define TEMP8_FROM_REG(reg) ((reg) * 1000) 129 #define TEMP8_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ 130 127000), 1000) 131 #define TEMP8U_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, \ 132 255000), 1000) 133 #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) 134 #define TEMP11_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ 135 127875), 125) * 32) 136 #define TEMP11U_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), 0, \ 137 255875), 125) * 32) 138 #define HYST_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \ 139 1000) 140 141 #define UPDATE_INTERVAL(max, rate) \ 142 ((1000 << (LM63_MAX_CONVRATE - (rate))) / (max)) 143 144 enum chips { lm63, lm64, lm96163 }; 145 146 /* 147 * Client data (each client gets its own) 148 */ 149 150 struct lm63_data { 151 struct i2c_client *client; 152 struct mutex update_lock; 153 const struct attribute_group *groups[5]; 154 char valid; /* zero until following fields are valid */ 155 char lut_valid; /* zero until lut fields are valid */ 156 unsigned long last_updated; /* in jiffies */ 157 unsigned long lut_last_updated; /* in jiffies */ 158 enum chips kind; 159 int temp2_offset; 160 161 int update_interval; /* in milliseconds */ 162 int max_convrate_hz; 163 int lut_size; /* 8 or 12 */ 164 165 /* registers values */ 166 u8 config, config_fan; 167 u16 fan[2]; /* 0: input 168 1: low limit */ 169 u8 pwm1_freq; 170 u8 pwm1[13]; /* 0: current output 171 1-12: lookup table */ 172 s8 temp8[15]; /* 0: local input 173 1: local high limit 174 2: remote critical limit 175 3-14: lookup table */ 176 s16 temp11[4]; /* 0: remote input 177 1: remote low limit 178 2: remote high limit 179 3: remote offset */ 180 u16 temp11u; /* remote input (unsigned) */ 181 u8 temp2_crit_hyst; 182 u8 lut_temp_hyst; 183 u8 alarms; 184 bool pwm_highres; 185 bool lut_temp_highres; 186 bool remote_unsigned; /* true if unsigned remote upper limits */ 187 bool trutherm; 188 }; 189 190 static inline int temp8_from_reg(struct lm63_data *data, int nr) 191 { 192 if (data->remote_unsigned) 193 return TEMP8_FROM_REG((u8)data->temp8[nr]); 194 return TEMP8_FROM_REG(data->temp8[nr]); 195 } 196 197 static inline int lut_temp_from_reg(struct lm63_data *data, int nr) 198 { 199 return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000); 200 } 201 202 static inline int lut_temp_to_reg(struct lm63_data *data, long val) 203 { 204 val -= data->temp2_offset; 205 if (data->lut_temp_highres) 206 return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127500), 500); 207 else 208 return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000); 209 } 210 211 /* 212 * Update the lookup table register cache. 213 * client->update_lock must be held when calling this function. 214 */ 215 static void lm63_update_lut(struct lm63_data *data) 216 { 217 struct i2c_client *client = data->client; 218 int i; 219 220 if (time_after(jiffies, data->lut_last_updated + 5 * HZ) || 221 !data->lut_valid) { 222 for (i = 0; i < data->lut_size; i++) { 223 data->pwm1[1 + i] = i2c_smbus_read_byte_data(client, 224 LM63_REG_LUT_PWM(i)); 225 data->temp8[3 + i] = i2c_smbus_read_byte_data(client, 226 LM63_REG_LUT_TEMP(i)); 227 } 228 data->lut_temp_hyst = i2c_smbus_read_byte_data(client, 229 LM63_REG_LUT_TEMP_HYST); 230 231 data->lut_last_updated = jiffies; 232 data->lut_valid = 1; 233 } 234 } 235 236 static struct lm63_data *lm63_update_device(struct device *dev) 237 { 238 struct lm63_data *data = dev_get_drvdata(dev); 239 struct i2c_client *client = data->client; 240 unsigned long next_update; 241 242 mutex_lock(&data->update_lock); 243 244 next_update = data->last_updated + 245 msecs_to_jiffies(data->update_interval); 246 if (time_after(jiffies, next_update) || !data->valid) { 247 if (data->config & 0x04) { /* tachometer enabled */ 248 /* order matters for fan1_input */ 249 data->fan[0] = i2c_smbus_read_byte_data(client, 250 LM63_REG_TACH_COUNT_LSB) & 0xFC; 251 data->fan[0] |= i2c_smbus_read_byte_data(client, 252 LM63_REG_TACH_COUNT_MSB) << 8; 253 data->fan[1] = (i2c_smbus_read_byte_data(client, 254 LM63_REG_TACH_LIMIT_LSB) & 0xFC) 255 | (i2c_smbus_read_byte_data(client, 256 LM63_REG_TACH_LIMIT_MSB) << 8); 257 } 258 259 data->pwm1_freq = i2c_smbus_read_byte_data(client, 260 LM63_REG_PWM_FREQ); 261 if (data->pwm1_freq == 0) 262 data->pwm1_freq = 1; 263 data->pwm1[0] = i2c_smbus_read_byte_data(client, 264 LM63_REG_PWM_VALUE); 265 266 data->temp8[0] = i2c_smbus_read_byte_data(client, 267 LM63_REG_LOCAL_TEMP); 268 data->temp8[1] = i2c_smbus_read_byte_data(client, 269 LM63_REG_LOCAL_HIGH); 270 271 /* order matters for temp2_input */ 272 data->temp11[0] = i2c_smbus_read_byte_data(client, 273 LM63_REG_REMOTE_TEMP_MSB) << 8; 274 data->temp11[0] |= i2c_smbus_read_byte_data(client, 275 LM63_REG_REMOTE_TEMP_LSB); 276 data->temp11[1] = (i2c_smbus_read_byte_data(client, 277 LM63_REG_REMOTE_LOW_MSB) << 8) 278 | i2c_smbus_read_byte_data(client, 279 LM63_REG_REMOTE_LOW_LSB); 280 data->temp11[2] = (i2c_smbus_read_byte_data(client, 281 LM63_REG_REMOTE_HIGH_MSB) << 8) 282 | i2c_smbus_read_byte_data(client, 283 LM63_REG_REMOTE_HIGH_LSB); 284 data->temp11[3] = (i2c_smbus_read_byte_data(client, 285 LM63_REG_REMOTE_OFFSET_MSB) << 8) 286 | i2c_smbus_read_byte_data(client, 287 LM63_REG_REMOTE_OFFSET_LSB); 288 289 if (data->kind == lm96163) 290 data->temp11u = (i2c_smbus_read_byte_data(client, 291 LM96163_REG_REMOTE_TEMP_U_MSB) << 8) 292 | i2c_smbus_read_byte_data(client, 293 LM96163_REG_REMOTE_TEMP_U_LSB); 294 295 data->temp8[2] = i2c_smbus_read_byte_data(client, 296 LM63_REG_REMOTE_TCRIT); 297 data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, 298 LM63_REG_REMOTE_TCRIT_HYST); 299 300 data->alarms = i2c_smbus_read_byte_data(client, 301 LM63_REG_ALERT_STATUS) & 0x7F; 302 303 data->last_updated = jiffies; 304 data->valid = 1; 305 } 306 307 lm63_update_lut(data); 308 309 mutex_unlock(&data->update_lock); 310 311 return data; 312 } 313 314 /* 315 * Trip points in the lookup table should be in ascending order for both 316 * temperatures and PWM output values. 317 */ 318 static int lm63_lut_looks_bad(struct device *dev, struct lm63_data *data) 319 { 320 int i; 321 322 mutex_lock(&data->update_lock); 323 lm63_update_lut(data); 324 325 for (i = 1; i < data->lut_size; i++) { 326 if (data->pwm1[1 + i - 1] > data->pwm1[1 + i] 327 || data->temp8[3 + i - 1] > data->temp8[3 + i]) { 328 dev_warn(dev, 329 "Lookup table doesn't look sane (check entries %d and %d)\n", 330 i, i + 1); 331 break; 332 } 333 } 334 mutex_unlock(&data->update_lock); 335 336 return i == data->lut_size ? 0 : 1; 337 } 338 339 /* 340 * Sysfs callback functions and files 341 */ 342 343 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, 344 char *buf) 345 { 346 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 347 struct lm63_data *data = lm63_update_device(dev); 348 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); 349 } 350 351 static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, 352 const char *buf, size_t count) 353 { 354 struct lm63_data *data = dev_get_drvdata(dev); 355 struct i2c_client *client = data->client; 356 unsigned long val; 357 int err; 358 359 err = kstrtoul(buf, 10, &val); 360 if (err) 361 return err; 362 363 mutex_lock(&data->update_lock); 364 data->fan[1] = FAN_TO_REG(val); 365 i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, 366 data->fan[1] & 0xFF); 367 i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, 368 data->fan[1] >> 8); 369 mutex_unlock(&data->update_lock); 370 return count; 371 } 372 373 static ssize_t show_pwm1(struct device *dev, struct device_attribute *devattr, 374 char *buf) 375 { 376 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 377 struct lm63_data *data = lm63_update_device(dev); 378 int nr = attr->index; 379 int pwm; 380 381 if (data->pwm_highres) 382 pwm = data->pwm1[nr]; 383 else 384 pwm = data->pwm1[nr] >= 2 * data->pwm1_freq ? 385 255 : (data->pwm1[nr] * 255 + data->pwm1_freq) / 386 (2 * data->pwm1_freq); 387 388 return sprintf(buf, "%d\n", pwm); 389 } 390 391 static ssize_t set_pwm1(struct device *dev, struct device_attribute *devattr, 392 const char *buf, size_t count) 393 { 394 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 395 struct lm63_data *data = dev_get_drvdata(dev); 396 struct i2c_client *client = data->client; 397 int nr = attr->index; 398 unsigned long val; 399 int err; 400 u8 reg; 401 402 if (!(data->config_fan & 0x20)) /* register is read-only */ 403 return -EPERM; 404 405 err = kstrtoul(buf, 10, &val); 406 if (err) 407 return err; 408 409 reg = nr ? LM63_REG_LUT_PWM(nr - 1) : LM63_REG_PWM_VALUE; 410 val = clamp_val(val, 0, 255); 411 412 mutex_lock(&data->update_lock); 413 data->pwm1[nr] = data->pwm_highres ? val : 414 (val * data->pwm1_freq * 2 + 127) / 255; 415 i2c_smbus_write_byte_data(client, reg, data->pwm1[nr]); 416 mutex_unlock(&data->update_lock); 417 return count; 418 } 419 420 static ssize_t pwm1_enable_show(struct device *dev, 421 struct device_attribute *dummy, char *buf) 422 { 423 struct lm63_data *data = lm63_update_device(dev); 424 return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); 425 } 426 427 static ssize_t pwm1_enable_store(struct device *dev, 428 struct device_attribute *dummy, 429 const char *buf, size_t count) 430 { 431 struct lm63_data *data = dev_get_drvdata(dev); 432 struct i2c_client *client = data->client; 433 unsigned long val; 434 int err; 435 436 err = kstrtoul(buf, 10, &val); 437 if (err) 438 return err; 439 if (val < 1 || val > 2) 440 return -EINVAL; 441 442 /* 443 * Only let the user switch to automatic mode if the lookup table 444 * looks sane. 445 */ 446 if (val == 2 && lm63_lut_looks_bad(dev, data)) 447 return -EPERM; 448 449 mutex_lock(&data->update_lock); 450 data->config_fan = i2c_smbus_read_byte_data(client, 451 LM63_REG_CONFIG_FAN); 452 if (val == 1) 453 data->config_fan |= 0x20; 454 else 455 data->config_fan &= ~0x20; 456 i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN, 457 data->config_fan); 458 mutex_unlock(&data->update_lock); 459 return count; 460 } 461 462 /* 463 * There are 8bit registers for both local(temp1) and remote(temp2) sensor. 464 * For remote sensor registers temp2_offset has to be considered, 465 * for local sensor it must not. 466 * So we need separate 8bit accessors for local and remote sensor. 467 */ 468 static ssize_t show_local_temp8(struct device *dev, 469 struct device_attribute *devattr, 470 char *buf) 471 { 472 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 473 struct lm63_data *data = lm63_update_device(dev); 474 return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); 475 } 476 477 static ssize_t show_remote_temp8(struct device *dev, 478 struct device_attribute *devattr, 479 char *buf) 480 { 481 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 482 struct lm63_data *data = lm63_update_device(dev); 483 return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index) 484 + data->temp2_offset); 485 } 486 487 static ssize_t show_lut_temp(struct device *dev, 488 struct device_attribute *devattr, 489 char *buf) 490 { 491 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 492 struct lm63_data *data = lm63_update_device(dev); 493 return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) 494 + data->temp2_offset); 495 } 496 497 static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, 498 const char *buf, size_t count) 499 { 500 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 501 struct lm63_data *data = dev_get_drvdata(dev); 502 struct i2c_client *client = data->client; 503 int nr = attr->index; 504 long val; 505 int err; 506 int temp; 507 u8 reg; 508 509 err = kstrtol(buf, 10, &val); 510 if (err) 511 return err; 512 513 mutex_lock(&data->update_lock); 514 switch (nr) { 515 case 2: 516 reg = LM63_REG_REMOTE_TCRIT; 517 if (data->remote_unsigned) 518 temp = TEMP8U_TO_REG(val - data->temp2_offset); 519 else 520 temp = TEMP8_TO_REG(val - data->temp2_offset); 521 break; 522 case 1: 523 reg = LM63_REG_LOCAL_HIGH; 524 temp = TEMP8_TO_REG(val); 525 break; 526 default: /* lookup table */ 527 reg = LM63_REG_LUT_TEMP(nr - 3); 528 temp = lut_temp_to_reg(data, val); 529 } 530 data->temp8[nr] = temp; 531 i2c_smbus_write_byte_data(client, reg, temp); 532 mutex_unlock(&data->update_lock); 533 return count; 534 } 535 536 static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, 537 char *buf) 538 { 539 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 540 struct lm63_data *data = lm63_update_device(dev); 541 int nr = attr->index; 542 int temp; 543 544 if (!nr) { 545 /* 546 * Use unsigned temperature unless its value is zero. 547 * If it is zero, use signed temperature. 548 */ 549 if (data->temp11u) 550 temp = TEMP11_FROM_REG(data->temp11u); 551 else 552 temp = TEMP11_FROM_REG(data->temp11[nr]); 553 } else { 554 if (data->remote_unsigned && nr == 2) 555 temp = TEMP11_FROM_REG((u16)data->temp11[nr]); 556 else 557 temp = TEMP11_FROM_REG(data->temp11[nr]); 558 } 559 return sprintf(buf, "%d\n", temp + data->temp2_offset); 560 } 561 562 static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, 563 const char *buf, size_t count) 564 { 565 static const u8 reg[6] = { 566 LM63_REG_REMOTE_LOW_MSB, 567 LM63_REG_REMOTE_LOW_LSB, 568 LM63_REG_REMOTE_HIGH_MSB, 569 LM63_REG_REMOTE_HIGH_LSB, 570 LM63_REG_REMOTE_OFFSET_MSB, 571 LM63_REG_REMOTE_OFFSET_LSB, 572 }; 573 574 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 575 struct lm63_data *data = dev_get_drvdata(dev); 576 struct i2c_client *client = data->client; 577 long val; 578 int err; 579 int nr = attr->index; 580 581 err = kstrtol(buf, 10, &val); 582 if (err) 583 return err; 584 585 mutex_lock(&data->update_lock); 586 if (data->remote_unsigned && nr == 2) 587 data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset); 588 else 589 data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset); 590 591 i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], 592 data->temp11[nr] >> 8); 593 i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], 594 data->temp11[nr] & 0xff); 595 mutex_unlock(&data->update_lock); 596 return count; 597 } 598 599 /* 600 * Hysteresis register holds a relative value, while we want to present 601 * an absolute to user-space 602 */ 603 static ssize_t temp2_crit_hyst_show(struct device *dev, 604 struct device_attribute *dummy, char *buf) 605 { 606 struct lm63_data *data = lm63_update_device(dev); 607 return sprintf(buf, "%d\n", temp8_from_reg(data, 2) 608 + data->temp2_offset 609 - TEMP8_FROM_REG(data->temp2_crit_hyst)); 610 } 611 612 static ssize_t show_lut_temp_hyst(struct device *dev, 613 struct device_attribute *devattr, char *buf) 614 { 615 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 616 struct lm63_data *data = lm63_update_device(dev); 617 618 return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) 619 + data->temp2_offset 620 - TEMP8_FROM_REG(data->lut_temp_hyst)); 621 } 622 623 /* 624 * And now the other way around, user-space provides an absolute 625 * hysteresis value and we have to store a relative one 626 */ 627 static ssize_t temp2_crit_hyst_store(struct device *dev, 628 struct device_attribute *dummy, 629 const char *buf, size_t count) 630 { 631 struct lm63_data *data = dev_get_drvdata(dev); 632 struct i2c_client *client = data->client; 633 long val; 634 int err; 635 long hyst; 636 637 err = kstrtol(buf, 10, &val); 638 if (err) 639 return err; 640 641 mutex_lock(&data->update_lock); 642 hyst = temp8_from_reg(data, 2) + data->temp2_offset - val; 643 i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, 644 HYST_TO_REG(hyst)); 645 mutex_unlock(&data->update_lock); 646 return count; 647 } 648 649 /* 650 * Set conversion rate. 651 * client->update_lock must be held when calling this function. 652 */ 653 static void lm63_set_convrate(struct lm63_data *data, unsigned int interval) 654 { 655 struct i2c_client *client = data->client; 656 unsigned int update_interval; 657 int i; 658 659 /* Shift calculations to avoid rounding errors */ 660 interval <<= 6; 661 662 /* find the nearest update rate */ 663 update_interval = (1 << (LM63_MAX_CONVRATE + 6)) * 1000 664 / data->max_convrate_hz; 665 for (i = 0; i < LM63_MAX_CONVRATE; i++, update_interval >>= 1) 666 if (interval >= update_interval * 3 / 4) 667 break; 668 669 i2c_smbus_write_byte_data(client, LM63_REG_CONVRATE, i); 670 data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, i); 671 } 672 673 static ssize_t update_interval_show(struct device *dev, 674 struct device_attribute *attr, char *buf) 675 { 676 struct lm63_data *data = dev_get_drvdata(dev); 677 678 return sprintf(buf, "%u\n", data->update_interval); 679 } 680 681 static ssize_t update_interval_store(struct device *dev, 682 struct device_attribute *attr, 683 const char *buf, size_t count) 684 { 685 struct lm63_data *data = dev_get_drvdata(dev); 686 unsigned long val; 687 int err; 688 689 err = kstrtoul(buf, 10, &val); 690 if (err) 691 return err; 692 693 mutex_lock(&data->update_lock); 694 lm63_set_convrate(data, clamp_val(val, 0, 100000)); 695 mutex_unlock(&data->update_lock); 696 697 return count; 698 } 699 700 static ssize_t temp2_type_show(struct device *dev, 701 struct device_attribute *attr, char *buf) 702 { 703 struct lm63_data *data = dev_get_drvdata(dev); 704 705 return sprintf(buf, data->trutherm ? "1\n" : "2\n"); 706 } 707 708 static ssize_t temp2_type_store(struct device *dev, 709 struct device_attribute *attr, 710 const char *buf, size_t count) 711 { 712 struct lm63_data *data = dev_get_drvdata(dev); 713 struct i2c_client *client = data->client; 714 unsigned long val; 715 int ret; 716 u8 reg; 717 718 ret = kstrtoul(buf, 10, &val); 719 if (ret < 0) 720 return ret; 721 if (val != 1 && val != 2) 722 return -EINVAL; 723 724 mutex_lock(&data->update_lock); 725 data->trutherm = val == 1; 726 reg = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & ~0x02; 727 i2c_smbus_write_byte_data(client, LM96163_REG_TRUTHERM, 728 reg | (data->trutherm ? 0x02 : 0x00)); 729 data->valid = 0; 730 mutex_unlock(&data->update_lock); 731 732 return count; 733 } 734 735 static ssize_t alarms_show(struct device *dev, struct device_attribute *dummy, 736 char *buf) 737 { 738 struct lm63_data *data = lm63_update_device(dev); 739 return sprintf(buf, "%u\n", data->alarms); 740 } 741 742 static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, 743 char *buf) 744 { 745 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 746 struct lm63_data *data = lm63_update_device(dev); 747 int bitnr = attr->index; 748 749 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 750 } 751 752 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); 753 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, 754 set_fan, 1); 755 756 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0); 757 static DEVICE_ATTR_RW(pwm1_enable); 758 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO, 759 show_pwm1, set_pwm1, 1); 760 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO, 761 show_lut_temp, set_temp8, 3); 762 static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO, 763 show_lut_temp_hyst, NULL, 3); 764 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, 765 show_pwm1, set_pwm1, 2); 766 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO, 767 show_lut_temp, set_temp8, 4); 768 static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO, 769 show_lut_temp_hyst, NULL, 4); 770 static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IWUSR | S_IRUGO, 771 show_pwm1, set_pwm1, 3); 772 static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IWUSR | S_IRUGO, 773 show_lut_temp, set_temp8, 5); 774 static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO, 775 show_lut_temp_hyst, NULL, 5); 776 static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IWUSR | S_IRUGO, 777 show_pwm1, set_pwm1, 4); 778 static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IWUSR | S_IRUGO, 779 show_lut_temp, set_temp8, 6); 780 static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO, 781 show_lut_temp_hyst, NULL, 6); 782 static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IWUSR | S_IRUGO, 783 show_pwm1, set_pwm1, 5); 784 static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IWUSR | S_IRUGO, 785 show_lut_temp, set_temp8, 7); 786 static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO, 787 show_lut_temp_hyst, NULL, 7); 788 static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IWUSR | S_IRUGO, 789 show_pwm1, set_pwm1, 6); 790 static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IWUSR | S_IRUGO, 791 show_lut_temp, set_temp8, 8); 792 static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO, 793 show_lut_temp_hyst, NULL, 8); 794 static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IWUSR | S_IRUGO, 795 show_pwm1, set_pwm1, 7); 796 static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IWUSR | S_IRUGO, 797 show_lut_temp, set_temp8, 9); 798 static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO, 799 show_lut_temp_hyst, NULL, 9); 800 static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IWUSR | S_IRUGO, 801 show_pwm1, set_pwm1, 8); 802 static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IWUSR | S_IRUGO, 803 show_lut_temp, set_temp8, 10); 804 static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO, 805 show_lut_temp_hyst, NULL, 10); 806 static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IWUSR | S_IRUGO, 807 show_pwm1, set_pwm1, 9); 808 static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IWUSR | S_IRUGO, 809 show_lut_temp, set_temp8, 11); 810 static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO, 811 show_lut_temp_hyst, NULL, 11); 812 static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IWUSR | S_IRUGO, 813 show_pwm1, set_pwm1, 10); 814 static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IWUSR | S_IRUGO, 815 show_lut_temp, set_temp8, 12); 816 static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO, 817 show_lut_temp_hyst, NULL, 12); 818 static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IWUSR | S_IRUGO, 819 show_pwm1, set_pwm1, 11); 820 static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IWUSR | S_IRUGO, 821 show_lut_temp, set_temp8, 13); 822 static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO, 823 show_lut_temp_hyst, NULL, 13); 824 static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IWUSR | S_IRUGO, 825 show_pwm1, set_pwm1, 12); 826 static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IWUSR | S_IRUGO, 827 show_lut_temp, set_temp8, 14); 828 static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO, 829 show_lut_temp_hyst, NULL, 14); 830 831 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0); 832 static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8, 833 set_temp8, 1); 834 835 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); 836 static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, 837 set_temp11, 1); 838 static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, 839 set_temp11, 2); 840 static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, 841 set_temp11, 3); 842 static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, 843 set_temp8, 2); 844 static DEVICE_ATTR_RW(temp2_crit_hyst); 845 846 static DEVICE_ATTR_RW(temp2_type); 847 848 /* Individual alarm files */ 849 static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0); 850 static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); 851 static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); 852 static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); 853 static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); 854 static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); 855 /* Raw alarm file for compatibility */ 856 static DEVICE_ATTR_RO(alarms); 857 858 static DEVICE_ATTR_RW(update_interval); 859 860 static struct attribute *lm63_attributes[] = { 861 &sensor_dev_attr_pwm1.dev_attr.attr, 862 &dev_attr_pwm1_enable.attr, 863 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, 864 &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, 865 &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, 866 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, 867 &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, 868 &sensor_dev_attr_pwm1_auto_point2_temp_hyst.dev_attr.attr, 869 &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, 870 &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, 871 &sensor_dev_attr_pwm1_auto_point3_temp_hyst.dev_attr.attr, 872 &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, 873 &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, 874 &sensor_dev_attr_pwm1_auto_point4_temp_hyst.dev_attr.attr, 875 &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, 876 &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, 877 &sensor_dev_attr_pwm1_auto_point5_temp_hyst.dev_attr.attr, 878 &sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr, 879 &sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr, 880 &sensor_dev_attr_pwm1_auto_point6_temp_hyst.dev_attr.attr, 881 &sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr, 882 &sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr, 883 &sensor_dev_attr_pwm1_auto_point7_temp_hyst.dev_attr.attr, 884 &sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr, 885 &sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr, 886 &sensor_dev_attr_pwm1_auto_point8_temp_hyst.dev_attr.attr, 887 888 &sensor_dev_attr_temp1_input.dev_attr.attr, 889 &sensor_dev_attr_temp2_input.dev_attr.attr, 890 &sensor_dev_attr_temp2_min.dev_attr.attr, 891 &sensor_dev_attr_temp1_max.dev_attr.attr, 892 &sensor_dev_attr_temp2_max.dev_attr.attr, 893 &sensor_dev_attr_temp2_offset.dev_attr.attr, 894 &sensor_dev_attr_temp2_crit.dev_attr.attr, 895 &dev_attr_temp2_crit_hyst.attr, 896 897 &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, 898 &sensor_dev_attr_temp2_fault.dev_attr.attr, 899 &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, 900 &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, 901 &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, 902 &dev_attr_alarms.attr, 903 &dev_attr_update_interval.attr, 904 NULL 905 }; 906 907 static struct attribute *lm63_attributes_temp2_type[] = { 908 &dev_attr_temp2_type.attr, 909 NULL 910 }; 911 912 static const struct attribute_group lm63_group_temp2_type = { 913 .attrs = lm63_attributes_temp2_type, 914 }; 915 916 static struct attribute *lm63_attributes_extra_lut[] = { 917 &sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr, 918 &sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr, 919 &sensor_dev_attr_pwm1_auto_point9_temp_hyst.dev_attr.attr, 920 &sensor_dev_attr_pwm1_auto_point10_pwm.dev_attr.attr, 921 &sensor_dev_attr_pwm1_auto_point10_temp.dev_attr.attr, 922 &sensor_dev_attr_pwm1_auto_point10_temp_hyst.dev_attr.attr, 923 &sensor_dev_attr_pwm1_auto_point11_pwm.dev_attr.attr, 924 &sensor_dev_attr_pwm1_auto_point11_temp.dev_attr.attr, 925 &sensor_dev_attr_pwm1_auto_point11_temp_hyst.dev_attr.attr, 926 &sensor_dev_attr_pwm1_auto_point12_pwm.dev_attr.attr, 927 &sensor_dev_attr_pwm1_auto_point12_temp.dev_attr.attr, 928 &sensor_dev_attr_pwm1_auto_point12_temp_hyst.dev_attr.attr, 929 NULL 930 }; 931 932 static const struct attribute_group lm63_group_extra_lut = { 933 .attrs = lm63_attributes_extra_lut, 934 }; 935 936 /* 937 * On LM63, temp2_crit can be set only once, which should be job 938 * of the bootloader. 939 * On LM64, temp2_crit can always be set. 940 * On LM96163, temp2_crit can be set if bit 1 of the configuration 941 * register is true. 942 */ 943 static umode_t lm63_attribute_mode(struct kobject *kobj, 944 struct attribute *attr, int index) 945 { 946 struct device *dev = container_of(kobj, struct device, kobj); 947 struct lm63_data *data = dev_get_drvdata(dev); 948 949 if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr 950 && (data->kind == lm64 || 951 (data->kind == lm96163 && (data->config & 0x02)))) 952 return attr->mode | S_IWUSR; 953 954 return attr->mode; 955 } 956 957 static const struct attribute_group lm63_group = { 958 .is_visible = lm63_attribute_mode, 959 .attrs = lm63_attributes, 960 }; 961 962 static struct attribute *lm63_attributes_fan1[] = { 963 &sensor_dev_attr_fan1_input.dev_attr.attr, 964 &sensor_dev_attr_fan1_min.dev_attr.attr, 965 966 &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, 967 NULL 968 }; 969 970 static const struct attribute_group lm63_group_fan1 = { 971 .attrs = lm63_attributes_fan1, 972 }; 973 974 /* 975 * Real code 976 */ 977 978 /* Return 0 if detection is successful, -ENODEV otherwise */ 979 static int lm63_detect(struct i2c_client *client, 980 struct i2c_board_info *info) 981 { 982 struct i2c_adapter *adapter = client->adapter; 983 u8 man_id, chip_id, reg_config1, reg_config2; 984 u8 reg_alert_status, reg_alert_mask; 985 int address = client->addr; 986 987 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 988 return -ENODEV; 989 990 man_id = i2c_smbus_read_byte_data(client, LM63_REG_MAN_ID); 991 chip_id = i2c_smbus_read_byte_data(client, LM63_REG_CHIP_ID); 992 993 reg_config1 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); 994 reg_config2 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG2); 995 reg_alert_status = i2c_smbus_read_byte_data(client, 996 LM63_REG_ALERT_STATUS); 997 reg_alert_mask = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_MASK); 998 999 if (man_id != 0x01 /* National Semiconductor */ 1000 || (reg_config1 & 0x18) != 0x00 1001 || (reg_config2 & 0xF8) != 0x00 1002 || (reg_alert_status & 0x20) != 0x00 1003 || (reg_alert_mask & 0xA4) != 0xA4) { 1004 dev_dbg(&adapter->dev, 1005 "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n", 1006 man_id, chip_id); 1007 return -ENODEV; 1008 } 1009 1010 if (chip_id == 0x41 && address == 0x4c) 1011 strlcpy(info->type, "lm63", I2C_NAME_SIZE); 1012 else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e)) 1013 strlcpy(info->type, "lm64", I2C_NAME_SIZE); 1014 else if (chip_id == 0x49 && address == 0x4c) 1015 strlcpy(info->type, "lm96163", I2C_NAME_SIZE); 1016 else 1017 return -ENODEV; 1018 1019 return 0; 1020 } 1021 1022 /* 1023 * Ideally we shouldn't have to initialize anything, since the BIOS 1024 * should have taken care of everything 1025 */ 1026 static void lm63_init_client(struct lm63_data *data) 1027 { 1028 struct i2c_client *client = data->client; 1029 struct device *dev = &client->dev; 1030 u8 convrate; 1031 1032 data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); 1033 data->config_fan = i2c_smbus_read_byte_data(client, 1034 LM63_REG_CONFIG_FAN); 1035 1036 /* Start converting if needed */ 1037 if (data->config & 0x40) { /* standby */ 1038 dev_dbg(dev, "Switching to operational mode\n"); 1039 data->config &= 0xA7; 1040 i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, 1041 data->config); 1042 } 1043 /* Tachometer is always enabled on LM64 */ 1044 if (data->kind == lm64) 1045 data->config |= 0x04; 1046 1047 /* We may need pwm1_freq before ever updating the client data */ 1048 data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); 1049 if (data->pwm1_freq == 0) 1050 data->pwm1_freq = 1; 1051 1052 switch (data->kind) { 1053 case lm63: 1054 case lm64: 1055 data->max_convrate_hz = LM63_MAX_CONVRATE_HZ; 1056 data->lut_size = 8; 1057 break; 1058 case lm96163: 1059 data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ; 1060 data->lut_size = 12; 1061 data->trutherm 1062 = i2c_smbus_read_byte_data(client, 1063 LM96163_REG_TRUTHERM) & 0x02; 1064 break; 1065 } 1066 convrate = i2c_smbus_read_byte_data(client, LM63_REG_CONVRATE); 1067 if (unlikely(convrate > LM63_MAX_CONVRATE)) 1068 convrate = LM63_MAX_CONVRATE; 1069 data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, 1070 convrate); 1071 1072 /* 1073 * For LM96163, check if high resolution PWM 1074 * and unsigned temperature format is enabled. 1075 */ 1076 if (data->kind == lm96163) { 1077 u8 config_enhanced 1078 = i2c_smbus_read_byte_data(client, 1079 LM96163_REG_CONFIG_ENHANCED); 1080 if (config_enhanced & 0x20) 1081 data->lut_temp_highres = true; 1082 if ((config_enhanced & 0x10) 1083 && !(data->config_fan & 0x08) && data->pwm1_freq == 8) 1084 data->pwm_highres = true; 1085 if (config_enhanced & 0x08) 1086 data->remote_unsigned = true; 1087 } 1088 1089 /* Show some debug info about the LM63 configuration */ 1090 if (data->kind == lm63) 1091 dev_dbg(dev, "Alert/tach pin configured for %s\n", 1092 (data->config & 0x04) ? "tachometer input" : 1093 "alert output"); 1094 dev_dbg(dev, "PWM clock %s kHz, output frequency %u Hz\n", 1095 (data->config_fan & 0x08) ? "1.4" : "360", 1096 ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); 1097 dev_dbg(dev, "PWM output active %s, %s mode\n", 1098 (data->config_fan & 0x10) ? "low" : "high", 1099 (data->config_fan & 0x20) ? "manual" : "auto"); 1100 } 1101 1102 static int lm63_probe(struct i2c_client *client, 1103 const struct i2c_device_id *id) 1104 { 1105 struct device *dev = &client->dev; 1106 struct device *hwmon_dev; 1107 struct lm63_data *data; 1108 int groups = 0; 1109 1110 data = devm_kzalloc(dev, sizeof(struct lm63_data), GFP_KERNEL); 1111 if (!data) 1112 return -ENOMEM; 1113 1114 data->client = client; 1115 mutex_init(&data->update_lock); 1116 1117 /* Set the device type */ 1118 data->kind = id->driver_data; 1119 if (data->kind == lm64) 1120 data->temp2_offset = 16000; 1121 1122 /* Initialize chip */ 1123 lm63_init_client(data); 1124 1125 /* Register sysfs hooks */ 1126 data->groups[groups++] = &lm63_group; 1127 if (data->config & 0x04) /* tachometer enabled */ 1128 data->groups[groups++] = &lm63_group_fan1; 1129 1130 if (data->kind == lm96163) { 1131 data->groups[groups++] = &lm63_group_temp2_type; 1132 data->groups[groups++] = &lm63_group_extra_lut; 1133 } 1134 1135 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, 1136 data, data->groups); 1137 return PTR_ERR_OR_ZERO(hwmon_dev); 1138 } 1139 1140 /* 1141 * Driver data (common to all clients) 1142 */ 1143 1144 static const struct i2c_device_id lm63_id[] = { 1145 { "lm63", lm63 }, 1146 { "lm64", lm64 }, 1147 { "lm96163", lm96163 }, 1148 { } 1149 }; 1150 MODULE_DEVICE_TABLE(i2c, lm63_id); 1151 1152 static struct i2c_driver lm63_driver = { 1153 .class = I2C_CLASS_HWMON, 1154 .driver = { 1155 .name = "lm63", 1156 }, 1157 .probe = lm63_probe, 1158 .id_table = lm63_id, 1159 .detect = lm63_detect, 1160 .address_list = normal_i2c, 1161 }; 1162 1163 module_i2c_driver(lm63_driver); 1164 1165 MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>"); 1166 MODULE_DESCRIPTION("LM63 driver"); 1167 MODULE_LICENSE("GPL"); 1168