1 /* 2 * lm63.c - driver for the National Semiconductor LM63 temperature sensor 3 * with integrated fan control 4 * Copyright (C) 2004-2008 Jean Delvare <khali@linux-fr.org> 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 51 /* 52 * Addresses to scan 53 * Address is fully defined internally and cannot be changed. 54 */ 55 56 static const unsigned short normal_i2c[] = { 0x4c, I2C_CLIENT_END }; 57 58 /* 59 * Insmod parameters 60 */ 61 62 I2C_CLIENT_INSMOD_1(lm63); 63 64 /* 65 * The LM63 registers 66 */ 67 68 #define LM63_REG_CONFIG1 0x03 69 #define LM63_REG_CONFIG2 0xBF 70 #define LM63_REG_CONFIG_FAN 0x4A 71 72 #define LM63_REG_TACH_COUNT_MSB 0x47 73 #define LM63_REG_TACH_COUNT_LSB 0x46 74 #define LM63_REG_TACH_LIMIT_MSB 0x49 75 #define LM63_REG_TACH_LIMIT_LSB 0x48 76 77 #define LM63_REG_PWM_VALUE 0x4C 78 #define LM63_REG_PWM_FREQ 0x4D 79 80 #define LM63_REG_LOCAL_TEMP 0x00 81 #define LM63_REG_LOCAL_HIGH 0x05 82 83 #define LM63_REG_REMOTE_TEMP_MSB 0x01 84 #define LM63_REG_REMOTE_TEMP_LSB 0x10 85 #define LM63_REG_REMOTE_OFFSET_MSB 0x11 86 #define LM63_REG_REMOTE_OFFSET_LSB 0x12 87 #define LM63_REG_REMOTE_HIGH_MSB 0x07 88 #define LM63_REG_REMOTE_HIGH_LSB 0x13 89 #define LM63_REG_REMOTE_LOW_MSB 0x08 90 #define LM63_REG_REMOTE_LOW_LSB 0x14 91 #define LM63_REG_REMOTE_TCRIT 0x19 92 #define LM63_REG_REMOTE_TCRIT_HYST 0x21 93 94 #define LM63_REG_ALERT_STATUS 0x02 95 #define LM63_REG_ALERT_MASK 0x16 96 97 #define LM63_REG_MAN_ID 0xFE 98 #define LM63_REG_CHIP_ID 0xFF 99 100 /* 101 * Conversions and various macros 102 * For tachometer counts, the LM63 uses 16-bit values. 103 * For local temperature and high limit, remote critical limit and hysteresis 104 * value, it uses signed 8-bit values with LSB = 1 degree Celsius. 105 * For remote temperature, low and high limits, it uses signed 11-bit values 106 * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. 107 */ 108 109 #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ 110 5400000 / (reg)) 111 #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ 112 (5400000 / (val)) & 0xFFFC) 113 #define TEMP8_FROM_REG(reg) ((reg) * 1000) 114 #define TEMP8_TO_REG(val) ((val) <= -128000 ? -128 : \ 115 (val) >= 127000 ? 127 : \ 116 (val) < 0 ? ((val) - 500) / 1000 : \ 117 ((val) + 500) / 1000) 118 #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) 119 #define TEMP11_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ 120 (val) >= 127875 ? 0x7FE0 : \ 121 (val) < 0 ? ((val) - 62) / 125 * 32 : \ 122 ((val) + 62) / 125 * 32) 123 #define HYST_TO_REG(val) ((val) <= 0 ? 0 : \ 124 (val) >= 127000 ? 127 : \ 125 ((val) + 500) / 1000) 126 127 /* 128 * Functions declaration 129 */ 130 131 static int lm63_probe(struct i2c_client *client, 132 const struct i2c_device_id *id); 133 static int lm63_remove(struct i2c_client *client); 134 135 static struct lm63_data *lm63_update_device(struct device *dev); 136 137 static int lm63_detect(struct i2c_client *client, int kind, 138 struct i2c_board_info *info); 139 static void lm63_init_client(struct i2c_client *client); 140 141 /* 142 * Driver data (common to all clients) 143 */ 144 145 static const struct i2c_device_id lm63_id[] = { 146 { "lm63", lm63 }, 147 { } 148 }; 149 MODULE_DEVICE_TABLE(i2c, lm63_id); 150 151 static struct i2c_driver lm63_driver = { 152 .class = I2C_CLASS_HWMON, 153 .driver = { 154 .name = "lm63", 155 }, 156 .probe = lm63_probe, 157 .remove = lm63_remove, 158 .id_table = lm63_id, 159 .detect = lm63_detect, 160 .address_data = &addr_data, 161 }; 162 163 /* 164 * Client data (each client gets its own) 165 */ 166 167 struct lm63_data { 168 struct device *hwmon_dev; 169 struct mutex update_lock; 170 char valid; /* zero until following fields are valid */ 171 unsigned long last_updated; /* in jiffies */ 172 173 /* registers values */ 174 u8 config, config_fan; 175 u16 fan[2]; /* 0: input 176 1: low limit */ 177 u8 pwm1_freq; 178 u8 pwm1_value; 179 s8 temp8[3]; /* 0: local input 180 1: local high limit 181 2: remote critical limit */ 182 s16 temp11[3]; /* 0: remote input 183 1: remote low limit 184 2: remote high limit */ 185 u8 temp2_crit_hyst; 186 u8 alarms; 187 }; 188 189 /* 190 * Sysfs callback functions and files 191 */ 192 193 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, 194 char *buf) 195 { 196 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 197 struct lm63_data *data = lm63_update_device(dev); 198 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); 199 } 200 201 static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, 202 const char *buf, size_t count) 203 { 204 struct i2c_client *client = to_i2c_client(dev); 205 struct lm63_data *data = i2c_get_clientdata(client); 206 unsigned long val = simple_strtoul(buf, NULL, 10); 207 208 mutex_lock(&data->update_lock); 209 data->fan[1] = FAN_TO_REG(val); 210 i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, 211 data->fan[1] & 0xFF); 212 i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, 213 data->fan[1] >> 8); 214 mutex_unlock(&data->update_lock); 215 return count; 216 } 217 218 static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy, 219 char *buf) 220 { 221 struct lm63_data *data = lm63_update_device(dev); 222 return sprintf(buf, "%d\n", data->pwm1_value >= 2 * data->pwm1_freq ? 223 255 : (data->pwm1_value * 255 + data->pwm1_freq) / 224 (2 * data->pwm1_freq)); 225 } 226 227 static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy, 228 const char *buf, size_t count) 229 { 230 struct i2c_client *client = to_i2c_client(dev); 231 struct lm63_data *data = i2c_get_clientdata(client); 232 unsigned long val; 233 234 if (!(data->config_fan & 0x20)) /* register is read-only */ 235 return -EPERM; 236 237 val = simple_strtoul(buf, NULL, 10); 238 mutex_lock(&data->update_lock); 239 data->pwm1_value = val <= 0 ? 0 : 240 val >= 255 ? 2 * data->pwm1_freq : 241 (val * data->pwm1_freq * 2 + 127) / 255; 242 i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1_value); 243 mutex_unlock(&data->update_lock); 244 return count; 245 } 246 247 static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *dummy, 248 char *buf) 249 { 250 struct lm63_data *data = lm63_update_device(dev); 251 return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); 252 } 253 254 static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr, 255 char *buf) 256 { 257 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 258 struct lm63_data *data = lm63_update_device(dev); 259 return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); 260 } 261 262 static ssize_t set_temp8(struct device *dev, struct device_attribute *dummy, 263 const char *buf, size_t count) 264 { 265 struct i2c_client *client = to_i2c_client(dev); 266 struct lm63_data *data = i2c_get_clientdata(client); 267 long val = simple_strtol(buf, NULL, 10); 268 269 mutex_lock(&data->update_lock); 270 data->temp8[1] = TEMP8_TO_REG(val); 271 i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]); 272 mutex_unlock(&data->update_lock); 273 return count; 274 } 275 276 static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, 277 char *buf) 278 { 279 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 280 struct lm63_data *data = lm63_update_device(dev); 281 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[attr->index])); 282 } 283 284 static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, 285 const char *buf, size_t count) 286 { 287 static const u8 reg[4] = { 288 LM63_REG_REMOTE_LOW_MSB, 289 LM63_REG_REMOTE_LOW_LSB, 290 LM63_REG_REMOTE_HIGH_MSB, 291 LM63_REG_REMOTE_HIGH_LSB, 292 }; 293 294 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 295 struct i2c_client *client = to_i2c_client(dev); 296 struct lm63_data *data = i2c_get_clientdata(client); 297 long val = simple_strtol(buf, NULL, 10); 298 int nr = attr->index; 299 300 mutex_lock(&data->update_lock); 301 data->temp11[nr] = TEMP11_TO_REG(val); 302 i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], 303 data->temp11[nr] >> 8); 304 i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], 305 data->temp11[nr] & 0xff); 306 mutex_unlock(&data->update_lock); 307 return count; 308 } 309 310 /* Hysteresis register holds a relative value, while we want to present 311 an absolute to user-space */ 312 static ssize_t show_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy, 313 char *buf) 314 { 315 struct lm63_data *data = lm63_update_device(dev); 316 return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[2]) 317 - TEMP8_FROM_REG(data->temp2_crit_hyst)); 318 } 319 320 /* And now the other way around, user-space provides an absolute 321 hysteresis value and we have to store a relative one */ 322 static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy, 323 const char *buf, size_t count) 324 { 325 struct i2c_client *client = to_i2c_client(dev); 326 struct lm63_data *data = i2c_get_clientdata(client); 327 long val = simple_strtol(buf, NULL, 10); 328 long hyst; 329 330 mutex_lock(&data->update_lock); 331 hyst = TEMP8_FROM_REG(data->temp8[2]) - val; 332 i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, 333 HYST_TO_REG(hyst)); 334 mutex_unlock(&data->update_lock); 335 return count; 336 } 337 338 static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, 339 char *buf) 340 { 341 struct lm63_data *data = lm63_update_device(dev); 342 return sprintf(buf, "%u\n", data->alarms); 343 } 344 345 static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, 346 char *buf) 347 { 348 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 349 struct lm63_data *data = lm63_update_device(dev); 350 int bitnr = attr->index; 351 352 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 353 } 354 355 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); 356 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, 357 set_fan, 1); 358 359 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1); 360 static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL); 361 362 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0); 363 static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8, 364 set_temp8, 1); 365 366 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); 367 static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, 368 set_temp11, 1); 369 static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, 370 set_temp11, 2); 371 static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp8, NULL, 2); 372 static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst, 373 set_temp2_crit_hyst); 374 375 /* Individual alarm files */ 376 static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0); 377 static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); 378 static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); 379 static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); 380 static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); 381 static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); 382 /* Raw alarm file for compatibility */ 383 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 384 385 static struct attribute *lm63_attributes[] = { 386 &dev_attr_pwm1.attr, 387 &dev_attr_pwm1_enable.attr, 388 &sensor_dev_attr_temp1_input.dev_attr.attr, 389 &sensor_dev_attr_temp2_input.dev_attr.attr, 390 &sensor_dev_attr_temp2_min.dev_attr.attr, 391 &sensor_dev_attr_temp1_max.dev_attr.attr, 392 &sensor_dev_attr_temp2_max.dev_attr.attr, 393 &sensor_dev_attr_temp2_crit.dev_attr.attr, 394 &dev_attr_temp2_crit_hyst.attr, 395 396 &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, 397 &sensor_dev_attr_temp2_fault.dev_attr.attr, 398 &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, 399 &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, 400 &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, 401 &dev_attr_alarms.attr, 402 NULL 403 }; 404 405 static const struct attribute_group lm63_group = { 406 .attrs = lm63_attributes, 407 }; 408 409 static struct attribute *lm63_attributes_fan1[] = { 410 &sensor_dev_attr_fan1_input.dev_attr.attr, 411 &sensor_dev_attr_fan1_min.dev_attr.attr, 412 413 &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, 414 NULL 415 }; 416 417 static const struct attribute_group lm63_group_fan1 = { 418 .attrs = lm63_attributes_fan1, 419 }; 420 421 /* 422 * Real code 423 */ 424 425 /* Return 0 if detection is successful, -ENODEV otherwise */ 426 static int lm63_detect(struct i2c_client *new_client, int kind, 427 struct i2c_board_info *info) 428 { 429 struct i2c_adapter *adapter = new_client->adapter; 430 431 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 432 return -ENODEV; 433 434 if (kind < 0) { /* must identify */ 435 u8 man_id, chip_id, reg_config1, reg_config2; 436 u8 reg_alert_status, reg_alert_mask; 437 438 man_id = i2c_smbus_read_byte_data(new_client, 439 LM63_REG_MAN_ID); 440 chip_id = i2c_smbus_read_byte_data(new_client, 441 LM63_REG_CHIP_ID); 442 reg_config1 = i2c_smbus_read_byte_data(new_client, 443 LM63_REG_CONFIG1); 444 reg_config2 = i2c_smbus_read_byte_data(new_client, 445 LM63_REG_CONFIG2); 446 reg_alert_status = i2c_smbus_read_byte_data(new_client, 447 LM63_REG_ALERT_STATUS); 448 reg_alert_mask = i2c_smbus_read_byte_data(new_client, 449 LM63_REG_ALERT_MASK); 450 451 if (man_id == 0x01 /* National Semiconductor */ 452 && chip_id == 0x41 /* LM63 */ 453 && (reg_config1 & 0x18) == 0x00 454 && (reg_config2 & 0xF8) == 0x00 455 && (reg_alert_status & 0x20) == 0x00 456 && (reg_alert_mask & 0xA4) == 0xA4) { 457 kind = lm63; 458 } else { /* failed */ 459 dev_dbg(&adapter->dev, "Unsupported chip " 460 "(man_id=0x%02X, chip_id=0x%02X).\n", 461 man_id, chip_id); 462 return -ENODEV; 463 } 464 } 465 466 strlcpy(info->type, "lm63", I2C_NAME_SIZE); 467 468 return 0; 469 } 470 471 static int lm63_probe(struct i2c_client *new_client, 472 const struct i2c_device_id *id) 473 { 474 struct lm63_data *data; 475 int err; 476 477 data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL); 478 if (!data) { 479 err = -ENOMEM; 480 goto exit; 481 } 482 483 i2c_set_clientdata(new_client, data); 484 data->valid = 0; 485 mutex_init(&data->update_lock); 486 487 /* Initialize the LM63 chip */ 488 lm63_init_client(new_client); 489 490 /* Register sysfs hooks */ 491 if ((err = sysfs_create_group(&new_client->dev.kobj, 492 &lm63_group))) 493 goto exit_free; 494 if (data->config & 0x04) { /* tachometer enabled */ 495 if ((err = sysfs_create_group(&new_client->dev.kobj, 496 &lm63_group_fan1))) 497 goto exit_remove_files; 498 } 499 500 data->hwmon_dev = hwmon_device_register(&new_client->dev); 501 if (IS_ERR(data->hwmon_dev)) { 502 err = PTR_ERR(data->hwmon_dev); 503 goto exit_remove_files; 504 } 505 506 return 0; 507 508 exit_remove_files: 509 sysfs_remove_group(&new_client->dev.kobj, &lm63_group); 510 sysfs_remove_group(&new_client->dev.kobj, &lm63_group_fan1); 511 exit_free: 512 kfree(data); 513 exit: 514 return err; 515 } 516 517 /* Idealy we shouldn't have to initialize anything, since the BIOS 518 should have taken care of everything */ 519 static void lm63_init_client(struct i2c_client *client) 520 { 521 struct lm63_data *data = i2c_get_clientdata(client); 522 523 data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); 524 data->config_fan = i2c_smbus_read_byte_data(client, 525 LM63_REG_CONFIG_FAN); 526 527 /* Start converting if needed */ 528 if (data->config & 0x40) { /* standby */ 529 dev_dbg(&client->dev, "Switching to operational mode\n"); 530 data->config &= 0xA7; 531 i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, 532 data->config); 533 } 534 535 /* We may need pwm1_freq before ever updating the client data */ 536 data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); 537 if (data->pwm1_freq == 0) 538 data->pwm1_freq = 1; 539 540 /* Show some debug info about the LM63 configuration */ 541 dev_dbg(&client->dev, "Alert/tach pin configured for %s\n", 542 (data->config & 0x04) ? "tachometer input" : 543 "alert output"); 544 dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz\n", 545 (data->config_fan & 0x08) ? "1.4" : "360", 546 ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); 547 dev_dbg(&client->dev, "PWM output active %s, %s mode\n", 548 (data->config_fan & 0x10) ? "low" : "high", 549 (data->config_fan & 0x20) ? "manual" : "auto"); 550 } 551 552 static int lm63_remove(struct i2c_client *client) 553 { 554 struct lm63_data *data = i2c_get_clientdata(client); 555 556 hwmon_device_unregister(data->hwmon_dev); 557 sysfs_remove_group(&client->dev.kobj, &lm63_group); 558 sysfs_remove_group(&client->dev.kobj, &lm63_group_fan1); 559 560 kfree(data); 561 return 0; 562 } 563 564 static struct lm63_data *lm63_update_device(struct device *dev) 565 { 566 struct i2c_client *client = to_i2c_client(dev); 567 struct lm63_data *data = i2c_get_clientdata(client); 568 569 mutex_lock(&data->update_lock); 570 571 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 572 if (data->config & 0x04) { /* tachometer enabled */ 573 /* order matters for fan1_input */ 574 data->fan[0] = i2c_smbus_read_byte_data(client, 575 LM63_REG_TACH_COUNT_LSB) & 0xFC; 576 data->fan[0] |= i2c_smbus_read_byte_data(client, 577 LM63_REG_TACH_COUNT_MSB) << 8; 578 data->fan[1] = (i2c_smbus_read_byte_data(client, 579 LM63_REG_TACH_LIMIT_LSB) & 0xFC) 580 | (i2c_smbus_read_byte_data(client, 581 LM63_REG_TACH_LIMIT_MSB) << 8); 582 } 583 584 data->pwm1_freq = i2c_smbus_read_byte_data(client, 585 LM63_REG_PWM_FREQ); 586 if (data->pwm1_freq == 0) 587 data->pwm1_freq = 1; 588 data->pwm1_value = i2c_smbus_read_byte_data(client, 589 LM63_REG_PWM_VALUE); 590 591 data->temp8[0] = i2c_smbus_read_byte_data(client, 592 LM63_REG_LOCAL_TEMP); 593 data->temp8[1] = i2c_smbus_read_byte_data(client, 594 LM63_REG_LOCAL_HIGH); 595 596 /* order matters for temp2_input */ 597 data->temp11[0] = i2c_smbus_read_byte_data(client, 598 LM63_REG_REMOTE_TEMP_MSB) << 8; 599 data->temp11[0] |= i2c_smbus_read_byte_data(client, 600 LM63_REG_REMOTE_TEMP_LSB); 601 data->temp11[1] = (i2c_smbus_read_byte_data(client, 602 LM63_REG_REMOTE_LOW_MSB) << 8) 603 | i2c_smbus_read_byte_data(client, 604 LM63_REG_REMOTE_LOW_LSB); 605 data->temp11[2] = (i2c_smbus_read_byte_data(client, 606 LM63_REG_REMOTE_HIGH_MSB) << 8) 607 | i2c_smbus_read_byte_data(client, 608 LM63_REG_REMOTE_HIGH_LSB); 609 data->temp8[2] = i2c_smbus_read_byte_data(client, 610 LM63_REG_REMOTE_TCRIT); 611 data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, 612 LM63_REG_REMOTE_TCRIT_HYST); 613 614 data->alarms = i2c_smbus_read_byte_data(client, 615 LM63_REG_ALERT_STATUS) & 0x7F; 616 617 data->last_updated = jiffies; 618 data->valid = 1; 619 } 620 621 mutex_unlock(&data->update_lock); 622 623 return data; 624 } 625 626 static int __init sensors_lm63_init(void) 627 { 628 return i2c_add_driver(&lm63_driver); 629 } 630 631 static void __exit sensors_lm63_exit(void) 632 { 633 i2c_del_driver(&lm63_driver); 634 } 635 636 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); 637 MODULE_DESCRIPTION("LM63 driver"); 638 MODULE_LICENSE("GPL"); 639 640 module_init(sensors_lm63_init); 641 module_exit(sensors_lm63_exit); 642