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[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; 57 58 /* 59 * The LM63 registers 60 */ 61 62 #define LM63_REG_CONFIG1 0x03 63 #define LM63_REG_CONFIG2 0xBF 64 #define LM63_REG_CONFIG_FAN 0x4A 65 66 #define LM63_REG_TACH_COUNT_MSB 0x47 67 #define LM63_REG_TACH_COUNT_LSB 0x46 68 #define LM63_REG_TACH_LIMIT_MSB 0x49 69 #define LM63_REG_TACH_LIMIT_LSB 0x48 70 71 #define LM63_REG_PWM_VALUE 0x4C 72 #define LM63_REG_PWM_FREQ 0x4D 73 74 #define LM63_REG_LOCAL_TEMP 0x00 75 #define LM63_REG_LOCAL_HIGH 0x05 76 77 #define LM63_REG_REMOTE_TEMP_MSB 0x01 78 #define LM63_REG_REMOTE_TEMP_LSB 0x10 79 #define LM63_REG_REMOTE_OFFSET_MSB 0x11 80 #define LM63_REG_REMOTE_OFFSET_LSB 0x12 81 #define LM63_REG_REMOTE_HIGH_MSB 0x07 82 #define LM63_REG_REMOTE_HIGH_LSB 0x13 83 #define LM63_REG_REMOTE_LOW_MSB 0x08 84 #define LM63_REG_REMOTE_LOW_LSB 0x14 85 #define LM63_REG_REMOTE_TCRIT 0x19 86 #define LM63_REG_REMOTE_TCRIT_HYST 0x21 87 88 #define LM63_REG_ALERT_STATUS 0x02 89 #define LM63_REG_ALERT_MASK 0x16 90 91 #define LM63_REG_MAN_ID 0xFE 92 #define LM63_REG_CHIP_ID 0xFF 93 94 /* 95 * Conversions and various macros 96 * For tachometer counts, the LM63 uses 16-bit values. 97 * For local temperature and high limit, remote critical limit and hysteresis 98 * value, it uses signed 8-bit values with LSB = 1 degree Celsius. 99 * For remote temperature, low and high limits, it uses signed 11-bit values 100 * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. 101 */ 102 103 #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ 104 5400000 / (reg)) 105 #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ 106 (5400000 / (val)) & 0xFFFC) 107 #define TEMP8_FROM_REG(reg) ((reg) * 1000) 108 #define TEMP8_TO_REG(val) ((val) <= -128000 ? -128 : \ 109 (val) >= 127000 ? 127 : \ 110 (val) < 0 ? ((val) - 500) / 1000 : \ 111 ((val) + 500) / 1000) 112 #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) 113 #define TEMP11_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ 114 (val) >= 127875 ? 0x7FE0 : \ 115 (val) < 0 ? ((val) - 62) / 125 * 32 : \ 116 ((val) + 62) / 125 * 32) 117 #define HYST_TO_REG(val) ((val) <= 0 ? 0 : \ 118 (val) >= 127000 ? 127 : \ 119 ((val) + 500) / 1000) 120 121 /* 122 * Functions declaration 123 */ 124 125 static int lm63_probe(struct i2c_client *client, 126 const struct i2c_device_id *id); 127 static int lm63_remove(struct i2c_client *client); 128 129 static struct lm63_data *lm63_update_device(struct device *dev); 130 131 static int lm63_detect(struct i2c_client *client, struct i2c_board_info *info); 132 static void lm63_init_client(struct i2c_client *client); 133 134 enum chips { lm63, lm64 }; 135 136 /* 137 * Driver data (common to all clients) 138 */ 139 140 static const struct i2c_device_id lm63_id[] = { 141 { "lm63", lm63 }, 142 { "lm64", lm64 }, 143 { } 144 }; 145 MODULE_DEVICE_TABLE(i2c, lm63_id); 146 147 static struct i2c_driver lm63_driver = { 148 .class = I2C_CLASS_HWMON, 149 .driver = { 150 .name = "lm63", 151 }, 152 .probe = lm63_probe, 153 .remove = lm63_remove, 154 .id_table = lm63_id, 155 .detect = lm63_detect, 156 .address_list = normal_i2c, 157 }; 158 159 /* 160 * Client data (each client gets its own) 161 */ 162 163 struct lm63_data { 164 struct device *hwmon_dev; 165 struct mutex update_lock; 166 char valid; /* zero until following fields are valid */ 167 unsigned long last_updated; /* in jiffies */ 168 169 /* registers values */ 170 u8 config, config_fan; 171 u16 fan[2]; /* 0: input 172 1: low limit */ 173 u8 pwm1_freq; 174 u8 pwm1_value; 175 s8 temp8[3]; /* 0: local input 176 1: local high limit 177 2: remote critical limit */ 178 s16 temp11[3]; /* 0: remote input 179 1: remote low limit 180 2: remote high limit */ 181 u8 temp2_crit_hyst; 182 u8 alarms; 183 }; 184 185 /* 186 * Sysfs callback functions and files 187 */ 188 189 static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, 190 char *buf) 191 { 192 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 193 struct lm63_data *data = lm63_update_device(dev); 194 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); 195 } 196 197 static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, 198 const char *buf, size_t count) 199 { 200 struct i2c_client *client = to_i2c_client(dev); 201 struct lm63_data *data = i2c_get_clientdata(client); 202 unsigned long val = simple_strtoul(buf, NULL, 10); 203 204 mutex_lock(&data->update_lock); 205 data->fan[1] = FAN_TO_REG(val); 206 i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, 207 data->fan[1] & 0xFF); 208 i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, 209 data->fan[1] >> 8); 210 mutex_unlock(&data->update_lock); 211 return count; 212 } 213 214 static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy, 215 char *buf) 216 { 217 struct lm63_data *data = lm63_update_device(dev); 218 return sprintf(buf, "%d\n", data->pwm1_value >= 2 * data->pwm1_freq ? 219 255 : (data->pwm1_value * 255 + data->pwm1_freq) / 220 (2 * data->pwm1_freq)); 221 } 222 223 static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy, 224 const char *buf, size_t count) 225 { 226 struct i2c_client *client = to_i2c_client(dev); 227 struct lm63_data *data = i2c_get_clientdata(client); 228 unsigned long val; 229 230 if (!(data->config_fan & 0x20)) /* register is read-only */ 231 return -EPERM; 232 233 val = simple_strtoul(buf, NULL, 10); 234 mutex_lock(&data->update_lock); 235 data->pwm1_value = val <= 0 ? 0 : 236 val >= 255 ? 2 * data->pwm1_freq : 237 (val * data->pwm1_freq * 2 + 127) / 255; 238 i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1_value); 239 mutex_unlock(&data->update_lock); 240 return count; 241 } 242 243 static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *dummy, 244 char *buf) 245 { 246 struct lm63_data *data = lm63_update_device(dev); 247 return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); 248 } 249 250 static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr, 251 char *buf) 252 { 253 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 254 struct lm63_data *data = lm63_update_device(dev); 255 return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); 256 } 257 258 static ssize_t set_temp8(struct device *dev, struct device_attribute *dummy, 259 const char *buf, size_t count) 260 { 261 struct i2c_client *client = to_i2c_client(dev); 262 struct lm63_data *data = i2c_get_clientdata(client); 263 long val = simple_strtol(buf, NULL, 10); 264 265 mutex_lock(&data->update_lock); 266 data->temp8[1] = TEMP8_TO_REG(val); 267 i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]); 268 mutex_unlock(&data->update_lock); 269 return count; 270 } 271 272 static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, 273 char *buf) 274 { 275 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 276 struct lm63_data *data = lm63_update_device(dev); 277 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[attr->index])); 278 } 279 280 static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, 281 const char *buf, size_t count) 282 { 283 static const u8 reg[4] = { 284 LM63_REG_REMOTE_LOW_MSB, 285 LM63_REG_REMOTE_LOW_LSB, 286 LM63_REG_REMOTE_HIGH_MSB, 287 LM63_REG_REMOTE_HIGH_LSB, 288 }; 289 290 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 291 struct i2c_client *client = to_i2c_client(dev); 292 struct lm63_data *data = i2c_get_clientdata(client); 293 long val = simple_strtol(buf, NULL, 10); 294 int nr = attr->index; 295 296 mutex_lock(&data->update_lock); 297 data->temp11[nr] = TEMP11_TO_REG(val); 298 i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], 299 data->temp11[nr] >> 8); 300 i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], 301 data->temp11[nr] & 0xff); 302 mutex_unlock(&data->update_lock); 303 return count; 304 } 305 306 /* Hysteresis register holds a relative value, while we want to present 307 an absolute to user-space */ 308 static ssize_t show_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy, 309 char *buf) 310 { 311 struct lm63_data *data = lm63_update_device(dev); 312 return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[2]) 313 - TEMP8_FROM_REG(data->temp2_crit_hyst)); 314 } 315 316 /* And now the other way around, user-space provides an absolute 317 hysteresis value and we have to store a relative one */ 318 static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy, 319 const char *buf, size_t count) 320 { 321 struct i2c_client *client = to_i2c_client(dev); 322 struct lm63_data *data = i2c_get_clientdata(client); 323 long val = simple_strtol(buf, NULL, 10); 324 long hyst; 325 326 mutex_lock(&data->update_lock); 327 hyst = TEMP8_FROM_REG(data->temp8[2]) - val; 328 i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, 329 HYST_TO_REG(hyst)); 330 mutex_unlock(&data->update_lock); 331 return count; 332 } 333 334 static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, 335 char *buf) 336 { 337 struct lm63_data *data = lm63_update_device(dev); 338 return sprintf(buf, "%u\n", data->alarms); 339 } 340 341 static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, 342 char *buf) 343 { 344 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 345 struct lm63_data *data = lm63_update_device(dev); 346 int bitnr = attr->index; 347 348 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 349 } 350 351 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); 352 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, 353 set_fan, 1); 354 355 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1); 356 static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL); 357 358 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0); 359 static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8, 360 set_temp8, 1); 361 362 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); 363 static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, 364 set_temp11, 1); 365 static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, 366 set_temp11, 2); 367 static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp8, NULL, 2); 368 static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst, 369 set_temp2_crit_hyst); 370 371 /* Individual alarm files */ 372 static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0); 373 static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); 374 static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); 375 static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); 376 static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); 377 static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); 378 /* Raw alarm file for compatibility */ 379 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 380 381 static struct attribute *lm63_attributes[] = { 382 &dev_attr_pwm1.attr, 383 &dev_attr_pwm1_enable.attr, 384 &sensor_dev_attr_temp1_input.dev_attr.attr, 385 &sensor_dev_attr_temp2_input.dev_attr.attr, 386 &sensor_dev_attr_temp2_min.dev_attr.attr, 387 &sensor_dev_attr_temp1_max.dev_attr.attr, 388 &sensor_dev_attr_temp2_max.dev_attr.attr, 389 &sensor_dev_attr_temp2_crit.dev_attr.attr, 390 &dev_attr_temp2_crit_hyst.attr, 391 392 &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, 393 &sensor_dev_attr_temp2_fault.dev_attr.attr, 394 &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, 395 &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, 396 &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, 397 &dev_attr_alarms.attr, 398 NULL 399 }; 400 401 static const struct attribute_group lm63_group = { 402 .attrs = lm63_attributes, 403 }; 404 405 static struct attribute *lm63_attributes_fan1[] = { 406 &sensor_dev_attr_fan1_input.dev_attr.attr, 407 &sensor_dev_attr_fan1_min.dev_attr.attr, 408 409 &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, 410 NULL 411 }; 412 413 static const struct attribute_group lm63_group_fan1 = { 414 .attrs = lm63_attributes_fan1, 415 }; 416 417 /* 418 * Real code 419 */ 420 421 /* Return 0 if detection is successful, -ENODEV otherwise */ 422 static int lm63_detect(struct i2c_client *new_client, 423 struct i2c_board_info *info) 424 { 425 struct i2c_adapter *adapter = new_client->adapter; 426 u8 man_id, chip_id, reg_config1, reg_config2; 427 u8 reg_alert_status, reg_alert_mask; 428 int address = new_client->addr; 429 430 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 431 return -ENODEV; 432 433 man_id = i2c_smbus_read_byte_data(new_client, LM63_REG_MAN_ID); 434 chip_id = i2c_smbus_read_byte_data(new_client, LM63_REG_CHIP_ID); 435 436 reg_config1 = i2c_smbus_read_byte_data(new_client, 437 LM63_REG_CONFIG1); 438 reg_config2 = i2c_smbus_read_byte_data(new_client, 439 LM63_REG_CONFIG2); 440 reg_alert_status = i2c_smbus_read_byte_data(new_client, 441 LM63_REG_ALERT_STATUS); 442 reg_alert_mask = i2c_smbus_read_byte_data(new_client, 443 LM63_REG_ALERT_MASK); 444 445 if (man_id != 0x01 /* National Semiconductor */ 446 || (reg_config1 & 0x18) != 0x00 447 || (reg_config2 & 0xF8) != 0x00 448 || (reg_alert_status & 0x20) != 0x00 449 || (reg_alert_mask & 0xA4) != 0xA4) { 450 dev_dbg(&adapter->dev, 451 "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n", 452 man_id, chip_id); 453 return -ENODEV; 454 } 455 456 if (chip_id == 0x41 && address == 0x4c) 457 strlcpy(info->type, "lm63", I2C_NAME_SIZE); 458 else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e)) 459 strlcpy(info->type, "lm64", I2C_NAME_SIZE); 460 else 461 return -ENODEV; 462 463 return 0; 464 } 465 466 static int lm63_probe(struct i2c_client *new_client, 467 const struct i2c_device_id *id) 468 { 469 struct lm63_data *data; 470 int err; 471 472 data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL); 473 if (!data) { 474 err = -ENOMEM; 475 goto exit; 476 } 477 478 i2c_set_clientdata(new_client, data); 479 data->valid = 0; 480 mutex_init(&data->update_lock); 481 482 /* Initialize the LM63 chip */ 483 lm63_init_client(new_client); 484 485 /* Register sysfs hooks */ 486 if ((err = sysfs_create_group(&new_client->dev.kobj, 487 &lm63_group))) 488 goto exit_free; 489 if (data->config & 0x04) { /* tachometer enabled */ 490 if ((err = sysfs_create_group(&new_client->dev.kobj, 491 &lm63_group_fan1))) 492 goto exit_remove_files; 493 } 494 495 data->hwmon_dev = hwmon_device_register(&new_client->dev); 496 if (IS_ERR(data->hwmon_dev)) { 497 err = PTR_ERR(data->hwmon_dev); 498 goto exit_remove_files; 499 } 500 501 return 0; 502 503 exit_remove_files: 504 sysfs_remove_group(&new_client->dev.kobj, &lm63_group); 505 sysfs_remove_group(&new_client->dev.kobj, &lm63_group_fan1); 506 exit_free: 507 kfree(data); 508 exit: 509 return err; 510 } 511 512 /* Idealy we shouldn't have to initialize anything, since the BIOS 513 should have taken care of everything */ 514 static void lm63_init_client(struct i2c_client *client) 515 { 516 struct lm63_data *data = i2c_get_clientdata(client); 517 518 data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); 519 data->config_fan = i2c_smbus_read_byte_data(client, 520 LM63_REG_CONFIG_FAN); 521 522 /* Start converting if needed */ 523 if (data->config & 0x40) { /* standby */ 524 dev_dbg(&client->dev, "Switching to operational mode\n"); 525 data->config &= 0xA7; 526 i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, 527 data->config); 528 } 529 530 /* We may need pwm1_freq before ever updating the client data */ 531 data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); 532 if (data->pwm1_freq == 0) 533 data->pwm1_freq = 1; 534 535 /* Show some debug info about the LM63 configuration */ 536 dev_dbg(&client->dev, "Alert/tach pin configured for %s\n", 537 (data->config & 0x04) ? "tachometer input" : 538 "alert output"); 539 dev_dbg(&client->dev, "PWM clock %s kHz, output frequency %u Hz\n", 540 (data->config_fan & 0x08) ? "1.4" : "360", 541 ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); 542 dev_dbg(&client->dev, "PWM output active %s, %s mode\n", 543 (data->config_fan & 0x10) ? "low" : "high", 544 (data->config_fan & 0x20) ? "manual" : "auto"); 545 } 546 547 static int lm63_remove(struct i2c_client *client) 548 { 549 struct lm63_data *data = i2c_get_clientdata(client); 550 551 hwmon_device_unregister(data->hwmon_dev); 552 sysfs_remove_group(&client->dev.kobj, &lm63_group); 553 sysfs_remove_group(&client->dev.kobj, &lm63_group_fan1); 554 555 kfree(data); 556 return 0; 557 } 558 559 static struct lm63_data *lm63_update_device(struct device *dev) 560 { 561 struct i2c_client *client = to_i2c_client(dev); 562 struct lm63_data *data = i2c_get_clientdata(client); 563 564 mutex_lock(&data->update_lock); 565 566 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 567 if (data->config & 0x04) { /* tachometer enabled */ 568 /* order matters for fan1_input */ 569 data->fan[0] = i2c_smbus_read_byte_data(client, 570 LM63_REG_TACH_COUNT_LSB) & 0xFC; 571 data->fan[0] |= i2c_smbus_read_byte_data(client, 572 LM63_REG_TACH_COUNT_MSB) << 8; 573 data->fan[1] = (i2c_smbus_read_byte_data(client, 574 LM63_REG_TACH_LIMIT_LSB) & 0xFC) 575 | (i2c_smbus_read_byte_data(client, 576 LM63_REG_TACH_LIMIT_MSB) << 8); 577 } 578 579 data->pwm1_freq = i2c_smbus_read_byte_data(client, 580 LM63_REG_PWM_FREQ); 581 if (data->pwm1_freq == 0) 582 data->pwm1_freq = 1; 583 data->pwm1_value = i2c_smbus_read_byte_data(client, 584 LM63_REG_PWM_VALUE); 585 586 data->temp8[0] = i2c_smbus_read_byte_data(client, 587 LM63_REG_LOCAL_TEMP); 588 data->temp8[1] = i2c_smbus_read_byte_data(client, 589 LM63_REG_LOCAL_HIGH); 590 591 /* order matters for temp2_input */ 592 data->temp11[0] = i2c_smbus_read_byte_data(client, 593 LM63_REG_REMOTE_TEMP_MSB) << 8; 594 data->temp11[0] |= i2c_smbus_read_byte_data(client, 595 LM63_REG_REMOTE_TEMP_LSB); 596 data->temp11[1] = (i2c_smbus_read_byte_data(client, 597 LM63_REG_REMOTE_LOW_MSB) << 8) 598 | i2c_smbus_read_byte_data(client, 599 LM63_REG_REMOTE_LOW_LSB); 600 data->temp11[2] = (i2c_smbus_read_byte_data(client, 601 LM63_REG_REMOTE_HIGH_MSB) << 8) 602 | i2c_smbus_read_byte_data(client, 603 LM63_REG_REMOTE_HIGH_LSB); 604 data->temp8[2] = i2c_smbus_read_byte_data(client, 605 LM63_REG_REMOTE_TCRIT); 606 data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, 607 LM63_REG_REMOTE_TCRIT_HYST); 608 609 data->alarms = i2c_smbus_read_byte_data(client, 610 LM63_REG_ALERT_STATUS) & 0x7F; 611 612 data->last_updated = jiffies; 613 data->valid = 1; 614 } 615 616 mutex_unlock(&data->update_lock); 617 618 return data; 619 } 620 621 static int __init sensors_lm63_init(void) 622 { 623 return i2c_add_driver(&lm63_driver); 624 } 625 626 static void __exit sensors_lm63_exit(void) 627 { 628 i2c_del_driver(&lm63_driver); 629 } 630 631 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); 632 MODULE_DESCRIPTION("LM63 driver"); 633 MODULE_LICENSE("GPL"); 634 635 module_init(sensors_lm63_init); 636 module_exit(sensors_lm63_exit); 637