1 /* 2 * adm1025.c 3 * 4 * Copyright (C) 2000 Chen-Yuan Wu <gwu@esoft.com> 5 * Copyright (C) 2003-2009 Jean Delvare <khali@linux-fr.org> 6 * 7 * The ADM1025 is a sensor chip made by Analog Devices. It reports up to 6 8 * voltages (including its own power source) and up to two temperatures 9 * (its own plus up to one external one). Voltages are scaled internally 10 * (which is not the common way) with ratios such that the nominal value 11 * of each voltage correspond to a register value of 192 (which means a 12 * resolution of about 0.5% of the nominal value). Temperature values are 13 * reported with a 1 deg resolution and a 3 deg accuracy. Complete 14 * datasheet can be obtained from Analog's website at: 15 * http://www.onsemi.com/PowerSolutions/product.do?id=ADM1025 16 * 17 * This driver also supports the ADM1025A, which differs from the ADM1025 18 * only in that it has "open-drain VID inputs while the ADM1025 has 19 * on-chip 100k pull-ups on the VID inputs". It doesn't make any 20 * difference for us. 21 * 22 * This driver also supports the NE1619, a sensor chip made by Philips. 23 * That chip is similar to the ADM1025A, with a few differences. The only 24 * difference that matters to us is that the NE1619 has only two possible 25 * addresses while the ADM1025A has a third one. Complete datasheet can be 26 * obtained from Philips's website at: 27 * http://www.semiconductors.philips.com/pip/NE1619DS.html 28 * 29 * Since the ADM1025 was the first chipset supported by this driver, most 30 * comments will refer to this chipset, but are actually general and 31 * concern all supported chipsets, unless mentioned otherwise. 32 * 33 * This program is free software; you can redistribute it and/or modify 34 * it under the terms of the GNU General Public License as published by 35 * the Free Software Foundation; either version 2 of the License, or 36 * (at your option) any later version. 37 * 38 * This program is distributed in the hope that it will be useful, 39 * but WITHOUT ANY WARRANTY; without even the implied warranty of 40 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 41 * GNU General Public License for more details. 42 * 43 * You should have received a copy of the GNU General Public License 44 * along with this program; if not, write to the Free Software 45 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 46 */ 47 48 #include <linux/module.h> 49 #include <linux/init.h> 50 #include <linux/slab.h> 51 #include <linux/jiffies.h> 52 #include <linux/i2c.h> 53 #include <linux/hwmon.h> 54 #include <linux/hwmon-sysfs.h> 55 #include <linux/hwmon-vid.h> 56 #include <linux/err.h> 57 #include <linux/mutex.h> 58 59 /* 60 * Addresses to scan 61 * ADM1025 and ADM1025A have three possible addresses: 0x2c, 0x2d and 0x2e. 62 * NE1619 has two possible addresses: 0x2c and 0x2d. 63 */ 64 65 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 66 67 enum chips { adm1025, ne1619 }; 68 69 /* 70 * The ADM1025 registers 71 */ 72 73 #define ADM1025_REG_MAN_ID 0x3E 74 #define ADM1025_REG_CHIP_ID 0x3F 75 #define ADM1025_REG_CONFIG 0x40 76 #define ADM1025_REG_STATUS1 0x41 77 #define ADM1025_REG_STATUS2 0x42 78 #define ADM1025_REG_IN(nr) (0x20 + (nr)) 79 #define ADM1025_REG_IN_MAX(nr) (0x2B + (nr) * 2) 80 #define ADM1025_REG_IN_MIN(nr) (0x2C + (nr) * 2) 81 #define ADM1025_REG_TEMP(nr) (0x26 + (nr)) 82 #define ADM1025_REG_TEMP_HIGH(nr) (0x37 + (nr) * 2) 83 #define ADM1025_REG_TEMP_LOW(nr) (0x38 + (nr) * 2) 84 #define ADM1025_REG_VID 0x47 85 #define ADM1025_REG_VID4 0x49 86 87 /* 88 * Conversions and various macros 89 * The ADM1025 uses signed 8-bit values for temperatures. 90 */ 91 92 static const int in_scale[6] = { 2500, 2250, 3300, 5000, 12000, 3300 }; 93 94 #define IN_FROM_REG(reg, scale) (((reg) * (scale) + 96) / 192) 95 #define IN_TO_REG(val, scale) ((val) <= 0 ? 0 : \ 96 (val) * 192 >= (scale) * 255 ? 255 : \ 97 ((val) * 192 + (scale) / 2) / (scale)) 98 99 #define TEMP_FROM_REG(reg) ((reg) * 1000) 100 #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ 101 (val) >= 126500 ? 127 : \ 102 (((val) < 0 ? (val) - 500 : \ 103 (val) + 500) / 1000)) 104 105 /* 106 * Functions declaration 107 */ 108 109 static int adm1025_probe(struct i2c_client *client, 110 const struct i2c_device_id *id); 111 static int adm1025_detect(struct i2c_client *client, 112 struct i2c_board_info *info); 113 static void adm1025_init_client(struct i2c_client *client); 114 static int adm1025_remove(struct i2c_client *client); 115 static struct adm1025_data *adm1025_update_device(struct device *dev); 116 117 /* 118 * Driver data (common to all clients) 119 */ 120 121 static const struct i2c_device_id adm1025_id[] = { 122 { "adm1025", adm1025 }, 123 { "ne1619", ne1619 }, 124 { } 125 }; 126 MODULE_DEVICE_TABLE(i2c, adm1025_id); 127 128 static struct i2c_driver adm1025_driver = { 129 .class = I2C_CLASS_HWMON, 130 .driver = { 131 .name = "adm1025", 132 }, 133 .probe = adm1025_probe, 134 .remove = adm1025_remove, 135 .id_table = adm1025_id, 136 .detect = adm1025_detect, 137 .address_list = normal_i2c, 138 }; 139 140 /* 141 * Client data (each client gets its own) 142 */ 143 144 struct adm1025_data { 145 struct device *hwmon_dev; 146 struct mutex update_lock; 147 char valid; /* zero until following fields are valid */ 148 unsigned long last_updated; /* in jiffies */ 149 150 u8 in[6]; /* register value */ 151 u8 in_max[6]; /* register value */ 152 u8 in_min[6]; /* register value */ 153 s8 temp[2]; /* register value */ 154 s8 temp_min[2]; /* register value */ 155 s8 temp_max[2]; /* register value */ 156 u16 alarms; /* register values, combined */ 157 u8 vid; /* register values, combined */ 158 u8 vrm; 159 }; 160 161 /* 162 * Sysfs stuff 163 */ 164 165 static ssize_t 166 show_in(struct device *dev, struct device_attribute *attr, char *buf) 167 { 168 int index = to_sensor_dev_attr(attr)->index; 169 struct adm1025_data *data = adm1025_update_device(dev); 170 return sprintf(buf, "%u\n", IN_FROM_REG(data->in[index], 171 in_scale[index])); 172 } 173 174 static ssize_t 175 show_in_min(struct device *dev, struct device_attribute *attr, char *buf) 176 { 177 int index = to_sensor_dev_attr(attr)->index; 178 struct adm1025_data *data = adm1025_update_device(dev); 179 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[index], 180 in_scale[index])); 181 } 182 183 static ssize_t 184 show_in_max(struct device *dev, struct device_attribute *attr, char *buf) 185 { 186 int index = to_sensor_dev_attr(attr)->index; 187 struct adm1025_data *data = adm1025_update_device(dev); 188 return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[index], 189 in_scale[index])); 190 } 191 192 static ssize_t 193 show_temp(struct device *dev, struct device_attribute *attr, char *buf) 194 { 195 int index = to_sensor_dev_attr(attr)->index; 196 struct adm1025_data *data = adm1025_update_device(dev); 197 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[index])); 198 } 199 200 static ssize_t 201 show_temp_min(struct device *dev, struct device_attribute *attr, char *buf) 202 { 203 int index = to_sensor_dev_attr(attr)->index; 204 struct adm1025_data *data = adm1025_update_device(dev); 205 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[index])); 206 } 207 208 static ssize_t 209 show_temp_max(struct device *dev, struct device_attribute *attr, char *buf) 210 { 211 int index = to_sensor_dev_attr(attr)->index; 212 struct adm1025_data *data = adm1025_update_device(dev); 213 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[index])); 214 } 215 216 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 217 const char *buf, size_t count) 218 { 219 int index = to_sensor_dev_attr(attr)->index; 220 struct i2c_client *client = to_i2c_client(dev); 221 struct adm1025_data *data = i2c_get_clientdata(client); 222 long val; 223 int err; 224 225 err = kstrtol(buf, 10, &val); 226 if (err) 227 return err; 228 229 mutex_lock(&data->update_lock); 230 data->in_min[index] = IN_TO_REG(val, in_scale[index]); 231 i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MIN(index), 232 data->in_min[index]); 233 mutex_unlock(&data->update_lock); 234 return count; 235 } 236 237 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 238 const char *buf, size_t count) 239 { 240 int index = to_sensor_dev_attr(attr)->index; 241 struct i2c_client *client = to_i2c_client(dev); 242 struct adm1025_data *data = i2c_get_clientdata(client); 243 long val; 244 int err; 245 246 err = kstrtol(buf, 10, &val); 247 if (err) 248 return err; 249 250 mutex_lock(&data->update_lock); 251 data->in_max[index] = IN_TO_REG(val, in_scale[index]); 252 i2c_smbus_write_byte_data(client, ADM1025_REG_IN_MAX(index), 253 data->in_max[index]); 254 mutex_unlock(&data->update_lock); 255 return count; 256 } 257 258 #define set_in(offset) \ 259 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 260 show_in, NULL, offset); \ 261 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IWUSR | S_IRUGO, \ 262 show_in_min, set_in_min, offset); \ 263 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IWUSR | S_IRUGO, \ 264 show_in_max, set_in_max, offset) 265 set_in(0); 266 set_in(1); 267 set_in(2); 268 set_in(3); 269 set_in(4); 270 set_in(5); 271 272 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, 273 const char *buf, size_t count) 274 { 275 int index = to_sensor_dev_attr(attr)->index; 276 struct i2c_client *client = to_i2c_client(dev); 277 struct adm1025_data *data = i2c_get_clientdata(client); 278 long val; 279 int err; 280 281 err = kstrtol(buf, 10, &val); 282 if (err) 283 return err; 284 285 mutex_lock(&data->update_lock); 286 data->temp_min[index] = TEMP_TO_REG(val); 287 i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_LOW(index), 288 data->temp_min[index]); 289 mutex_unlock(&data->update_lock); 290 return count; 291 } 292 293 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, 294 const char *buf, size_t count) 295 { 296 int index = to_sensor_dev_attr(attr)->index; 297 struct i2c_client *client = to_i2c_client(dev); 298 struct adm1025_data *data = i2c_get_clientdata(client); 299 long val; 300 int err; 301 302 err = kstrtol(buf, 10, &val); 303 if (err) 304 return err; 305 306 mutex_lock(&data->update_lock); 307 data->temp_max[index] = TEMP_TO_REG(val); 308 i2c_smbus_write_byte_data(client, ADM1025_REG_TEMP_HIGH(index), 309 data->temp_max[index]); 310 mutex_unlock(&data->update_lock); 311 return count; 312 } 313 314 #define set_temp(offset) \ 315 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 316 show_temp, NULL, offset - 1); \ 317 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IWUSR | S_IRUGO, \ 318 show_temp_min, set_temp_min, offset - 1); \ 319 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IWUSR | S_IRUGO, \ 320 show_temp_max, set_temp_max, offset - 1) 321 set_temp(1); 322 set_temp(2); 323 324 static ssize_t 325 show_alarms(struct device *dev, struct device_attribute *attr, char *buf) 326 { 327 struct adm1025_data *data = adm1025_update_device(dev); 328 return sprintf(buf, "%u\n", data->alarms); 329 } 330 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 331 332 static ssize_t 333 show_alarm(struct device *dev, struct device_attribute *attr, char *buf) 334 { 335 int bitnr = to_sensor_dev_attr(attr)->index; 336 struct adm1025_data *data = adm1025_update_device(dev); 337 return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 338 } 339 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 340 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 341 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 342 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 343 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 344 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); 345 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 5); 346 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 4); 347 static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14); 348 349 static ssize_t 350 show_vid(struct device *dev, struct device_attribute *attr, char *buf) 351 { 352 struct adm1025_data *data = adm1025_update_device(dev); 353 return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); 354 } 355 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); 356 357 static ssize_t 358 show_vrm(struct device *dev, struct device_attribute *attr, char *buf) 359 { 360 struct adm1025_data *data = dev_get_drvdata(dev); 361 return sprintf(buf, "%u\n", data->vrm); 362 } 363 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, 364 const char *buf, size_t count) 365 { 366 struct adm1025_data *data = dev_get_drvdata(dev); 367 unsigned long val; 368 int err; 369 370 err = kstrtoul(buf, 10, &val); 371 if (err) 372 return err; 373 374 data->vrm = val; 375 return count; 376 } 377 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); 378 379 /* 380 * Real code 381 */ 382 383 static struct attribute *adm1025_attributes[] = { 384 &sensor_dev_attr_in0_input.dev_attr.attr, 385 &sensor_dev_attr_in1_input.dev_attr.attr, 386 &sensor_dev_attr_in2_input.dev_attr.attr, 387 &sensor_dev_attr_in3_input.dev_attr.attr, 388 &sensor_dev_attr_in5_input.dev_attr.attr, 389 &sensor_dev_attr_in0_min.dev_attr.attr, 390 &sensor_dev_attr_in1_min.dev_attr.attr, 391 &sensor_dev_attr_in2_min.dev_attr.attr, 392 &sensor_dev_attr_in3_min.dev_attr.attr, 393 &sensor_dev_attr_in5_min.dev_attr.attr, 394 &sensor_dev_attr_in0_max.dev_attr.attr, 395 &sensor_dev_attr_in1_max.dev_attr.attr, 396 &sensor_dev_attr_in2_max.dev_attr.attr, 397 &sensor_dev_attr_in3_max.dev_attr.attr, 398 &sensor_dev_attr_in5_max.dev_attr.attr, 399 &sensor_dev_attr_in0_alarm.dev_attr.attr, 400 &sensor_dev_attr_in1_alarm.dev_attr.attr, 401 &sensor_dev_attr_in2_alarm.dev_attr.attr, 402 &sensor_dev_attr_in3_alarm.dev_attr.attr, 403 &sensor_dev_attr_in5_alarm.dev_attr.attr, 404 &sensor_dev_attr_temp1_input.dev_attr.attr, 405 &sensor_dev_attr_temp2_input.dev_attr.attr, 406 &sensor_dev_attr_temp1_min.dev_attr.attr, 407 &sensor_dev_attr_temp2_min.dev_attr.attr, 408 &sensor_dev_attr_temp1_max.dev_attr.attr, 409 &sensor_dev_attr_temp2_max.dev_attr.attr, 410 &sensor_dev_attr_temp1_alarm.dev_attr.attr, 411 &sensor_dev_attr_temp2_alarm.dev_attr.attr, 412 &sensor_dev_attr_temp1_fault.dev_attr.attr, 413 &dev_attr_alarms.attr, 414 &dev_attr_cpu0_vid.attr, 415 &dev_attr_vrm.attr, 416 NULL 417 }; 418 419 static const struct attribute_group adm1025_group = { 420 .attrs = adm1025_attributes, 421 }; 422 423 static struct attribute *adm1025_attributes_in4[] = { 424 &sensor_dev_attr_in4_input.dev_attr.attr, 425 &sensor_dev_attr_in4_min.dev_attr.attr, 426 &sensor_dev_attr_in4_max.dev_attr.attr, 427 &sensor_dev_attr_in4_alarm.dev_attr.attr, 428 NULL 429 }; 430 431 static const struct attribute_group adm1025_group_in4 = { 432 .attrs = adm1025_attributes_in4, 433 }; 434 435 /* Return 0 if detection is successful, -ENODEV otherwise */ 436 static int adm1025_detect(struct i2c_client *client, 437 struct i2c_board_info *info) 438 { 439 struct i2c_adapter *adapter = client->adapter; 440 const char *name; 441 u8 man_id, chip_id; 442 443 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 444 return -ENODEV; 445 446 /* Check for unused bits */ 447 if ((i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG) & 0x80) 448 || (i2c_smbus_read_byte_data(client, ADM1025_REG_STATUS1) & 0xC0) 449 || (i2c_smbus_read_byte_data(client, ADM1025_REG_STATUS2) & 0xBC)) { 450 dev_dbg(&adapter->dev, "ADM1025 detection failed at 0x%02x\n", 451 client->addr); 452 return -ENODEV; 453 } 454 455 /* Identification */ 456 chip_id = i2c_smbus_read_byte_data(client, ADM1025_REG_CHIP_ID); 457 if ((chip_id & 0xF0) != 0x20) 458 return -ENODEV; 459 460 man_id = i2c_smbus_read_byte_data(client, ADM1025_REG_MAN_ID); 461 if (man_id == 0x41) 462 name = "adm1025"; 463 else if (man_id == 0xA1 && client->addr != 0x2E) 464 name = "ne1619"; 465 else 466 return -ENODEV; 467 468 strlcpy(info->type, name, I2C_NAME_SIZE); 469 470 return 0; 471 } 472 473 static int adm1025_probe(struct i2c_client *client, 474 const struct i2c_device_id *id) 475 { 476 struct adm1025_data *data; 477 int err; 478 u8 config; 479 480 data = devm_kzalloc(&client->dev, sizeof(struct adm1025_data), 481 GFP_KERNEL); 482 if (!data) 483 return -ENOMEM; 484 485 i2c_set_clientdata(client, data); 486 mutex_init(&data->update_lock); 487 488 /* Initialize the ADM1025 chip */ 489 adm1025_init_client(client); 490 491 /* Register sysfs hooks */ 492 err = sysfs_create_group(&client->dev.kobj, &adm1025_group); 493 if (err) 494 return err; 495 496 /* Pin 11 is either in4 (+12V) or VID4 */ 497 config = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG); 498 if (!(config & 0x20)) { 499 err = sysfs_create_group(&client->dev.kobj, &adm1025_group_in4); 500 if (err) 501 goto exit_remove; 502 } 503 504 data->hwmon_dev = hwmon_device_register(&client->dev); 505 if (IS_ERR(data->hwmon_dev)) { 506 err = PTR_ERR(data->hwmon_dev); 507 goto exit_remove; 508 } 509 510 return 0; 511 512 exit_remove: 513 sysfs_remove_group(&client->dev.kobj, &adm1025_group); 514 sysfs_remove_group(&client->dev.kobj, &adm1025_group_in4); 515 return err; 516 } 517 518 static void adm1025_init_client(struct i2c_client *client) 519 { 520 u8 reg; 521 struct adm1025_data *data = i2c_get_clientdata(client); 522 int i; 523 524 data->vrm = vid_which_vrm(); 525 526 /* 527 * Set high limits 528 * Usually we avoid setting limits on driver init, but it happens 529 * that the ADM1025 comes with stupid default limits (all registers 530 * set to 0). In case the chip has not gone through any limit 531 * setting yet, we better set the high limits to the max so that 532 * no alarm triggers. 533 */ 534 for (i = 0; i < 6; i++) { 535 reg = i2c_smbus_read_byte_data(client, 536 ADM1025_REG_IN_MAX(i)); 537 if (reg == 0) 538 i2c_smbus_write_byte_data(client, 539 ADM1025_REG_IN_MAX(i), 540 0xFF); 541 } 542 for (i = 0; i < 2; i++) { 543 reg = i2c_smbus_read_byte_data(client, 544 ADM1025_REG_TEMP_HIGH(i)); 545 if (reg == 0) 546 i2c_smbus_write_byte_data(client, 547 ADM1025_REG_TEMP_HIGH(i), 548 0x7F); 549 } 550 551 /* 552 * Start the conversions 553 */ 554 reg = i2c_smbus_read_byte_data(client, ADM1025_REG_CONFIG); 555 if (!(reg & 0x01)) 556 i2c_smbus_write_byte_data(client, ADM1025_REG_CONFIG, 557 (reg&0x7E)|0x01); 558 } 559 560 static int adm1025_remove(struct i2c_client *client) 561 { 562 struct adm1025_data *data = i2c_get_clientdata(client); 563 564 hwmon_device_unregister(data->hwmon_dev); 565 sysfs_remove_group(&client->dev.kobj, &adm1025_group); 566 sysfs_remove_group(&client->dev.kobj, &adm1025_group_in4); 567 568 return 0; 569 } 570 571 static struct adm1025_data *adm1025_update_device(struct device *dev) 572 { 573 struct i2c_client *client = to_i2c_client(dev); 574 struct adm1025_data *data = i2c_get_clientdata(client); 575 576 mutex_lock(&data->update_lock); 577 578 if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) { 579 int i; 580 581 dev_dbg(&client->dev, "Updating data.\n"); 582 for (i = 0; i < 6; i++) { 583 data->in[i] = i2c_smbus_read_byte_data(client, 584 ADM1025_REG_IN(i)); 585 data->in_min[i] = i2c_smbus_read_byte_data(client, 586 ADM1025_REG_IN_MIN(i)); 587 data->in_max[i] = i2c_smbus_read_byte_data(client, 588 ADM1025_REG_IN_MAX(i)); 589 } 590 for (i = 0; i < 2; i++) { 591 data->temp[i] = i2c_smbus_read_byte_data(client, 592 ADM1025_REG_TEMP(i)); 593 data->temp_min[i] = i2c_smbus_read_byte_data(client, 594 ADM1025_REG_TEMP_LOW(i)); 595 data->temp_max[i] = i2c_smbus_read_byte_data(client, 596 ADM1025_REG_TEMP_HIGH(i)); 597 } 598 data->alarms = i2c_smbus_read_byte_data(client, 599 ADM1025_REG_STATUS1) 600 | (i2c_smbus_read_byte_data(client, 601 ADM1025_REG_STATUS2) << 8); 602 data->vid = (i2c_smbus_read_byte_data(client, 603 ADM1025_REG_VID) & 0x0f) 604 | ((i2c_smbus_read_byte_data(client, 605 ADM1025_REG_VID4) & 0x01) << 4); 606 607 data->last_updated = jiffies; 608 data->valid = 1; 609 } 610 611 mutex_unlock(&data->update_lock); 612 613 return data; 614 } 615 616 module_i2c_driver(adm1025_driver); 617 618 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); 619 MODULE_DESCRIPTION("ADM1025 driver"); 620 MODULE_LICENSE("GPL"); 621