Corentin Labbe | cae2caa | 2007-02-14 21:15:04 +0100 | [diff] [blame] | 1 | /* |
| 2 | * adm1029.c - Part of lm_sensors, Linux kernel modules for hardware monitoring |
| 3 | * |
| 4 | * Copyright (C) 2006 Corentin LABBE <corentin.labbe@geomatys.fr> |
| 5 | * |
| 6 | * Based on LM83 Driver by Jean Delvare <khali@linux-fr.org> |
| 7 | * |
| 8 | * Give only processor, motherboard temperatures and fan tachs |
| 9 | * Very rare chip please let me know if you use it |
| 10 | * |
| 11 | * http://www.analog.com/UploadedFiles/Data_Sheets/ADM1029.pdf |
| 12 | * |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation version 2 of the License |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 26 | */ |
| 27 | |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/init.h> |
| 30 | #include <linux/slab.h> |
| 31 | #include <linux/jiffies.h> |
| 32 | #include <linux/i2c.h> |
| 33 | #include <linux/hwmon-sysfs.h> |
| 34 | #include <linux/hwmon.h> |
| 35 | #include <linux/err.h> |
| 36 | #include <linux/mutex.h> |
| 37 | |
| 38 | /* |
| 39 | * Addresses to scan |
| 40 | */ |
| 41 | |
Mark M. Hoffman | 25e9c86 | 2008-02-17 22:28:03 -0500 | [diff] [blame^] | 42 | static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, |
| 43 | 0x2e, 0x2f, I2C_CLIENT_END |
Corentin Labbe | cae2caa | 2007-02-14 21:15:04 +0100 | [diff] [blame] | 44 | }; |
| 45 | |
| 46 | /* |
| 47 | * Insmod parameters |
| 48 | */ |
| 49 | |
| 50 | I2C_CLIENT_INSMOD_1(adm1029); |
| 51 | |
| 52 | /* |
| 53 | * The ADM1029 registers |
| 54 | * Manufacturer ID is 0x41 for Analog Devices |
| 55 | */ |
| 56 | |
| 57 | #define ADM1029_REG_MAN_ID 0x0D |
| 58 | #define ADM1029_REG_CHIP_ID 0x0E |
| 59 | #define ADM1029_REG_CONFIG 0x01 |
| 60 | #define ADM1029_REG_NB_FAN_SUPPORT 0x02 |
| 61 | |
| 62 | #define ADM1029_REG_TEMP_DEVICES_INSTALLED 0x06 |
| 63 | |
| 64 | #define ADM1029_REG_LOCAL_TEMP 0xA0 |
| 65 | #define ADM1029_REG_REMOTE1_TEMP 0xA1 |
| 66 | #define ADM1029_REG_REMOTE2_TEMP 0xA2 |
| 67 | |
| 68 | #define ADM1029_REG_LOCAL_TEMP_HIGH 0x90 |
| 69 | #define ADM1029_REG_REMOTE1_TEMP_HIGH 0x91 |
| 70 | #define ADM1029_REG_REMOTE2_TEMP_HIGH 0x92 |
| 71 | |
| 72 | #define ADM1029_REG_LOCAL_TEMP_LOW 0x98 |
| 73 | #define ADM1029_REG_REMOTE1_TEMP_LOW 0x99 |
| 74 | #define ADM1029_REG_REMOTE2_TEMP_LOW 0x9A |
| 75 | |
| 76 | #define ADM1029_REG_FAN1 0x70 |
| 77 | #define ADM1029_REG_FAN2 0x71 |
| 78 | |
| 79 | #define ADM1029_REG_FAN1_MIN 0x78 |
| 80 | #define ADM1029_REG_FAN2_MIN 0x79 |
| 81 | |
| 82 | #define ADM1029_REG_FAN1_CONFIG 0x68 |
| 83 | #define ADM1029_REG_FAN2_CONFIG 0x69 |
| 84 | |
| 85 | #define TEMP_FROM_REG(val) ((val) * 1000) |
| 86 | |
| 87 | #define DIV_FROM_REG(val) ( 1 << (((val) >> 6) - 1)) |
| 88 | |
| 89 | /* Registers to be checked by adm1029_update_device() */ |
| 90 | static const u8 ADM1029_REG_TEMP[] = { |
| 91 | ADM1029_REG_LOCAL_TEMP, |
| 92 | ADM1029_REG_REMOTE1_TEMP, |
| 93 | ADM1029_REG_REMOTE2_TEMP, |
| 94 | ADM1029_REG_LOCAL_TEMP_HIGH, |
| 95 | ADM1029_REG_REMOTE1_TEMP_HIGH, |
| 96 | ADM1029_REG_REMOTE2_TEMP_HIGH, |
| 97 | ADM1029_REG_LOCAL_TEMP_LOW, |
| 98 | ADM1029_REG_REMOTE1_TEMP_LOW, |
| 99 | ADM1029_REG_REMOTE2_TEMP_LOW, |
| 100 | }; |
| 101 | |
| 102 | static const u8 ADM1029_REG_FAN[] = { |
| 103 | ADM1029_REG_FAN1, |
| 104 | ADM1029_REG_FAN2, |
| 105 | ADM1029_REG_FAN1_MIN, |
| 106 | ADM1029_REG_FAN2_MIN, |
| 107 | }; |
| 108 | |
| 109 | static const u8 ADM1029_REG_FAN_DIV[] = { |
| 110 | ADM1029_REG_FAN1_CONFIG, |
| 111 | ADM1029_REG_FAN2_CONFIG, |
| 112 | }; |
| 113 | |
| 114 | /* |
| 115 | * Functions declaration |
| 116 | */ |
| 117 | |
| 118 | static int adm1029_attach_adapter(struct i2c_adapter *adapter); |
| 119 | static int adm1029_detect(struct i2c_adapter *adapter, int address, int kind); |
| 120 | static int adm1029_detach_client(struct i2c_client *client); |
| 121 | static struct adm1029_data *adm1029_update_device(struct device *dev); |
| 122 | static int adm1029_init_client(struct i2c_client *client); |
| 123 | |
| 124 | /* |
| 125 | * Driver data (common to all clients) |
| 126 | */ |
| 127 | |
| 128 | static struct i2c_driver adm1029_driver = { |
| 129 | .driver = { |
| 130 | .name = "adm1029", |
| 131 | }, |
| 132 | .attach_adapter = adm1029_attach_adapter, |
| 133 | .detach_client = adm1029_detach_client, |
| 134 | }; |
| 135 | |
| 136 | /* |
| 137 | * Client data (each client gets its own) |
| 138 | */ |
| 139 | |
| 140 | struct adm1029_data { |
| 141 | struct i2c_client client; |
Tony Jones | 1beeffe | 2007-08-20 13:46:20 -0700 | [diff] [blame] | 142 | struct device *hwmon_dev; |
Corentin Labbe | cae2caa | 2007-02-14 21:15:04 +0100 | [diff] [blame] | 143 | struct mutex update_lock; |
| 144 | char valid; /* zero until following fields are valid */ |
| 145 | unsigned long last_updated; /* in jiffies */ |
| 146 | |
| 147 | /* registers values, signed for temperature, unsigned for other stuff */ |
| 148 | s8 temp[ARRAY_SIZE(ADM1029_REG_TEMP)]; |
| 149 | u8 fan[ARRAY_SIZE(ADM1029_REG_FAN)]; |
| 150 | u8 fan_div[ARRAY_SIZE(ADM1029_REG_FAN_DIV)]; |
| 151 | }; |
| 152 | |
| 153 | /* |
| 154 | * Sysfs stuff |
| 155 | */ |
| 156 | |
| 157 | static ssize_t |
| 158 | show_temp(struct device *dev, struct device_attribute *devattr, char *buf) |
| 159 | { |
| 160 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 161 | struct adm1029_data *data = adm1029_update_device(dev); |
| 162 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index])); |
| 163 | } |
| 164 | |
| 165 | static ssize_t |
| 166 | show_fan(struct device *dev, struct device_attribute *devattr, char *buf) |
| 167 | { |
| 168 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 169 | struct adm1029_data *data = adm1029_update_device(dev); |
| 170 | u16 val; |
| 171 | if (data->fan[attr->index] == 0 || data->fan_div[attr->index] == 0 |
| 172 | || data->fan[attr->index] == 255) { |
| 173 | return sprintf(buf, "0\n"); |
| 174 | } |
| 175 | |
| 176 | val = 1880 * 120 / DIV_FROM_REG(data->fan_div[attr->index]) |
| 177 | / data->fan[attr->index]; |
| 178 | return sprintf(buf, "%d\n", val); |
| 179 | } |
| 180 | |
| 181 | static ssize_t |
| 182 | show_fan_div(struct device *dev, struct device_attribute *devattr, char *buf) |
| 183 | { |
| 184 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 185 | struct adm1029_data *data = adm1029_update_device(dev); |
| 186 | if (data->fan_div[attr->index] == 0) |
| 187 | return sprintf(buf, "0\n"); |
| 188 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[attr->index])); |
| 189 | } |
| 190 | |
| 191 | static ssize_t set_fan_div(struct device *dev, |
| 192 | struct device_attribute *devattr, const char *buf, size_t count) |
| 193 | { |
| 194 | struct i2c_client *client = to_i2c_client(dev); |
| 195 | struct adm1029_data *data = i2c_get_clientdata(client); |
| 196 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 197 | long val = simple_strtol(buf, NULL, 10); |
| 198 | u8 reg; |
| 199 | |
| 200 | mutex_lock(&data->update_lock); |
| 201 | |
| 202 | /*Read actual config */ |
| 203 | reg = i2c_smbus_read_byte_data(client, |
| 204 | ADM1029_REG_FAN_DIV[attr->index]); |
| 205 | |
| 206 | switch (val) { |
| 207 | case 1: |
| 208 | val = 1; |
| 209 | break; |
| 210 | case 2: |
| 211 | val = 2; |
| 212 | break; |
| 213 | case 4: |
| 214 | val = 3; |
| 215 | break; |
| 216 | default: |
| 217 | mutex_unlock(&data->update_lock); |
| 218 | dev_err(&client->dev, "fan_div value %ld not " |
| 219 | "supported. Choose one of 1, 2 or 4!\n", val); |
| 220 | return -EINVAL; |
| 221 | } |
| 222 | /* Update the value */ |
| 223 | reg = (reg & 0x3F) | (val << 6); |
| 224 | |
| 225 | /* Write value */ |
| 226 | i2c_smbus_write_byte_data(client, |
| 227 | ADM1029_REG_FAN_DIV[attr->index], reg); |
| 228 | mutex_unlock(&data->update_lock); |
| 229 | |
| 230 | return count; |
| 231 | } |
| 232 | |
| 233 | /* |
| 234 | Access rights on sysfs, S_IRUGO stand for Is Readable by User, Group and Others |
| 235 | S_IWUSR stand for Is Writable by User |
| 236 | */ |
| 237 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); |
| 238 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); |
| 239 | static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); |
| 240 | |
| 241 | static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp, NULL, 3); |
| 242 | static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp, NULL, 4); |
| 243 | static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp, NULL, 5); |
| 244 | |
| 245 | static SENSOR_DEVICE_ATTR(temp1_min, S_IRUGO, show_temp, NULL, 6); |
| 246 | static SENSOR_DEVICE_ATTR(temp2_min, S_IRUGO, show_temp, NULL, 7); |
| 247 | static SENSOR_DEVICE_ATTR(temp3_min, S_IRUGO, show_temp, NULL, 8); |
| 248 | |
| 249 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
| 250 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); |
| 251 | |
| 252 | static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, show_fan, NULL, 2); |
| 253 | static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO, show_fan, NULL, 3); |
| 254 | |
| 255 | static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, |
| 256 | show_fan_div, set_fan_div, 0); |
| 257 | static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, |
| 258 | show_fan_div, set_fan_div, 1); |
| 259 | |
| 260 | static struct attribute *adm1029_attributes[] = { |
| 261 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
| 262 | &sensor_dev_attr_temp1_min.dev_attr.attr, |
| 263 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
| 264 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
| 265 | &sensor_dev_attr_temp2_min.dev_attr.attr, |
| 266 | &sensor_dev_attr_temp2_max.dev_attr.attr, |
| 267 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
| 268 | &sensor_dev_attr_temp3_min.dev_attr.attr, |
| 269 | &sensor_dev_attr_temp3_max.dev_attr.attr, |
| 270 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
| 271 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
| 272 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
| 273 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
| 274 | &sensor_dev_attr_fan1_div.dev_attr.attr, |
| 275 | &sensor_dev_attr_fan2_div.dev_attr.attr, |
| 276 | NULL |
| 277 | }; |
| 278 | |
| 279 | static const struct attribute_group adm1029_group = { |
| 280 | .attrs = adm1029_attributes, |
| 281 | }; |
| 282 | |
| 283 | /* |
| 284 | * Real code |
| 285 | */ |
| 286 | |
| 287 | static int adm1029_attach_adapter(struct i2c_adapter *adapter) |
| 288 | { |
| 289 | if (!(adapter->class & I2C_CLASS_HWMON)) |
| 290 | return 0; |
| 291 | return i2c_probe(adapter, &addr_data, adm1029_detect); |
| 292 | } |
| 293 | |
| 294 | /* |
| 295 | * The following function does more than just detection. If detection |
| 296 | * succeeds, it also registers the new chip. |
| 297 | */ |
| 298 | |
| 299 | static int adm1029_detect(struct i2c_adapter *adapter, int address, int kind) |
| 300 | { |
| 301 | struct i2c_client *client; |
| 302 | struct adm1029_data *data; |
| 303 | int err = 0; |
| 304 | const char *name = ""; |
| 305 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 306 | goto exit; |
| 307 | |
| 308 | if (!(data = kzalloc(sizeof(struct adm1029_data), GFP_KERNEL))) { |
| 309 | err = -ENOMEM; |
| 310 | goto exit; |
| 311 | } |
| 312 | |
| 313 | client = &data->client; |
| 314 | i2c_set_clientdata(client, data); |
| 315 | client->addr = address; |
| 316 | client->adapter = adapter; |
| 317 | client->driver = &adm1029_driver; |
| 318 | |
| 319 | /* Now we do the detection and identification. A negative kind |
| 320 | * means that the driver was loaded with no force parameter |
| 321 | * (default), so we must both detect and identify the chip |
| 322 | * (actually there is only one possible kind of chip for now, adm1029). |
| 323 | * A zero kind means that the driver was loaded with the force |
| 324 | * parameter, the detection step shall be skipped. A positive kind |
| 325 | * means that the driver was loaded with the force parameter and a |
| 326 | * given kind of chip is requested, so both the detection and the |
| 327 | * identification steps are skipped. */ |
| 328 | |
| 329 | /* Default to an adm1029 if forced */ |
| 330 | if (kind == 0) |
| 331 | kind = adm1029; |
| 332 | |
| 333 | /* ADM1029 doesn't have CHIP ID, check just MAN ID |
| 334 | * For better detection we check also ADM1029_TEMP_DEVICES_INSTALLED, |
| 335 | * ADM1029_REG_NB_FAN_SUPPORT and compare it with possible values |
| 336 | * documented |
| 337 | */ |
| 338 | |
| 339 | if (kind <= 0) { /* identification */ |
| 340 | u8 man_id, chip_id, temp_devices_installed, nb_fan_support; |
| 341 | |
| 342 | man_id = i2c_smbus_read_byte_data(client, ADM1029_REG_MAN_ID); |
| 343 | chip_id = i2c_smbus_read_byte_data(client, ADM1029_REG_CHIP_ID); |
| 344 | temp_devices_installed = i2c_smbus_read_byte_data(client, |
| 345 | ADM1029_REG_TEMP_DEVICES_INSTALLED); |
| 346 | nb_fan_support = i2c_smbus_read_byte_data(client, |
| 347 | ADM1029_REG_NB_FAN_SUPPORT); |
| 348 | /* 0x41 is Analog Devices */ |
| 349 | if (man_id == 0x41 && (temp_devices_installed & 0xf9) == 0x01 |
| 350 | && nb_fan_support == 0x03) { |
| 351 | if ((chip_id & 0xF0) == 0x00) { |
| 352 | kind = adm1029; |
| 353 | } else { |
| 354 | /* There are no "official" CHIP ID, so actually |
| 355 | * we use Major/Minor revision for that */ |
| 356 | printk(KERN_INFO |
| 357 | "adm1029: Unknown major revision %x, " |
| 358 | "please let us know\n", chip_id); |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | if (kind <= 0) { /* identification failed */ |
| 363 | pr_debug("adm1029: Unsupported chip (man_id=0x%02X, " |
| 364 | "chip_id=0x%02X)\n", man_id, chip_id); |
| 365 | goto exit_free; |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | if (kind == adm1029) { |
| 370 | name = "adm1029"; |
| 371 | } |
| 372 | |
| 373 | /* We can fill in the remaining client fields */ |
| 374 | strlcpy(client->name, name, I2C_NAME_SIZE); |
| 375 | mutex_init(&data->update_lock); |
| 376 | |
| 377 | /* Tell the I2C layer a new client has arrived */ |
| 378 | if ((err = i2c_attach_client(client))) |
| 379 | goto exit_free; |
| 380 | |
| 381 | /* |
| 382 | * Initialize the ADM1029 chip |
| 383 | * Check config register |
| 384 | */ |
| 385 | if (adm1029_init_client(client) == 0) |
| 386 | goto exit_detach; |
| 387 | |
| 388 | /* Register sysfs hooks */ |
| 389 | if ((err = sysfs_create_group(&client->dev.kobj, &adm1029_group))) |
| 390 | goto exit_detach; |
| 391 | |
Tony Jones | 1beeffe | 2007-08-20 13:46:20 -0700 | [diff] [blame] | 392 | data->hwmon_dev = hwmon_device_register(&client->dev); |
| 393 | if (IS_ERR(data->hwmon_dev)) { |
| 394 | err = PTR_ERR(data->hwmon_dev); |
Corentin Labbe | cae2caa | 2007-02-14 21:15:04 +0100 | [diff] [blame] | 395 | goto exit_remove_files; |
| 396 | } |
| 397 | |
| 398 | return 0; |
| 399 | |
| 400 | exit_remove_files: |
| 401 | sysfs_remove_group(&client->dev.kobj, &adm1029_group); |
| 402 | exit_detach: |
| 403 | i2c_detach_client(client); |
| 404 | exit_free: |
| 405 | kfree(data); |
| 406 | exit: |
| 407 | return err; |
| 408 | } |
| 409 | |
| 410 | static int adm1029_init_client(struct i2c_client *client) |
| 411 | { |
| 412 | u8 config; |
| 413 | config = i2c_smbus_read_byte_data(client, ADM1029_REG_CONFIG); |
| 414 | if ((config & 0x10) == 0) { |
| 415 | i2c_smbus_write_byte_data(client, ADM1029_REG_CONFIG, |
| 416 | config | 0x10); |
| 417 | } |
| 418 | /* recheck config */ |
| 419 | config = i2c_smbus_read_byte_data(client, ADM1029_REG_CONFIG); |
| 420 | if ((config & 0x10) == 0) { |
| 421 | dev_err(&client->dev, "Initialization failed!\n"); |
| 422 | return 0; |
| 423 | } |
| 424 | return 1; |
| 425 | } |
| 426 | |
| 427 | static int adm1029_detach_client(struct i2c_client *client) |
| 428 | { |
| 429 | struct adm1029_data *data = i2c_get_clientdata(client); |
| 430 | int err; |
| 431 | |
Tony Jones | 1beeffe | 2007-08-20 13:46:20 -0700 | [diff] [blame] | 432 | hwmon_device_unregister(data->hwmon_dev); |
Corentin Labbe | cae2caa | 2007-02-14 21:15:04 +0100 | [diff] [blame] | 433 | sysfs_remove_group(&client->dev.kobj, &adm1029_group); |
| 434 | |
| 435 | if ((err = i2c_detach_client(client))) |
| 436 | return err; |
| 437 | |
| 438 | kfree(data); |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | /* |
| 443 | function that update the status of the chips (temperature for exemple) |
| 444 | */ |
| 445 | static struct adm1029_data *adm1029_update_device(struct device *dev) |
| 446 | { |
| 447 | struct i2c_client *client = to_i2c_client(dev); |
| 448 | struct adm1029_data *data = i2c_get_clientdata(client); |
| 449 | |
| 450 | mutex_lock(&data->update_lock); |
| 451 | /* |
| 452 | * Use the "cache" Luke, don't recheck values |
| 453 | * if there are already checked not a long time later |
| 454 | */ |
| 455 | if (time_after(jiffies, data->last_updated + HZ * 2) |
| 456 | || !data->valid) { |
| 457 | int nr; |
| 458 | |
| 459 | dev_dbg(&client->dev, "Updating adm1029 data\n"); |
| 460 | |
| 461 | for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_TEMP); nr++) { |
| 462 | data->temp[nr] = |
| 463 | i2c_smbus_read_byte_data(client, |
| 464 | ADM1029_REG_TEMP[nr]); |
| 465 | } |
| 466 | for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_FAN); nr++) { |
| 467 | data->fan[nr] = |
| 468 | i2c_smbus_read_byte_data(client, |
| 469 | ADM1029_REG_FAN[nr]); |
| 470 | } |
| 471 | for (nr = 0; nr < ARRAY_SIZE(ADM1029_REG_FAN_DIV); nr++) { |
| 472 | data->fan_div[nr] = |
| 473 | i2c_smbus_read_byte_data(client, |
| 474 | ADM1029_REG_FAN_DIV[nr]); |
| 475 | } |
| 476 | |
| 477 | data->last_updated = jiffies; |
| 478 | data->valid = 1; |
| 479 | } |
| 480 | |
| 481 | mutex_unlock(&data->update_lock); |
| 482 | |
| 483 | return data; |
| 484 | } |
| 485 | |
| 486 | /* |
| 487 | Common module stuff |
| 488 | */ |
| 489 | static int __init sensors_adm1029_init(void) |
| 490 | { |
| 491 | |
| 492 | return i2c_add_driver(&adm1029_driver); |
| 493 | } |
| 494 | |
| 495 | static void __exit sensors_adm1029_exit(void) |
| 496 | { |
| 497 | |
| 498 | i2c_del_driver(&adm1029_driver); |
| 499 | } |
| 500 | |
| 501 | MODULE_AUTHOR("Corentin LABBE <corentin.labbe@geomatys.fr>"); |
| 502 | MODULE_DESCRIPTION("adm1029 driver"); |
| 503 | MODULE_LICENSE("GPL v2"); |
| 504 | |
| 505 | module_init(sensors_adm1029_init); |
| 506 | module_exit(sensors_adm1029_exit); |