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