Thilo Cestonaro | 08426ed | 2016-07-18 13:51:29 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Support for the FTS Systemmonitoring Chip "Teutates" |
| 3 | * |
| 4 | * Copyright (C) 2016 Fujitsu Technology Solutions GmbH, |
| 5 | * Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | */ |
| 18 | #include <linux/err.h> |
| 19 | #include <linux/fs.h> |
| 20 | #include <linux/hwmon.h> |
| 21 | #include <linux/hwmon-sysfs.h> |
| 22 | #include <linux/i2c.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/jiffies.h> |
| 25 | #include <linux/module.h> |
| 26 | #include <linux/mutex.h> |
| 27 | #include <linux/slab.h> |
| 28 | #include <linux/sysfs.h> |
| 29 | #include <linux/uaccess.h> |
Thilo Cestonaro | 08426ed | 2016-07-18 13:51:29 +0200 | [diff] [blame] | 30 | #include <linux/watchdog.h> |
| 31 | |
| 32 | #define FTS_DEVICE_ID_REG 0x0000 |
| 33 | #define FTS_DEVICE_REVISION_REG 0x0001 |
| 34 | #define FTS_DEVICE_STATUS_REG 0x0004 |
| 35 | #define FTS_SATELLITE_STATUS_REG 0x0005 |
| 36 | #define FTS_EVENT_STATUS_REG 0x0006 |
| 37 | #define FTS_GLOBAL_CONTROL_REG 0x0007 |
| 38 | |
| 39 | #define FTS_SENSOR_EVENT_REG 0x0010 |
| 40 | |
| 41 | #define FTS_FAN_EVENT_REG 0x0014 |
| 42 | #define FTS_FAN_PRESENT_REG 0x0015 |
| 43 | |
| 44 | #define FTS_POWER_ON_TIME_COUNTER_A 0x007A |
| 45 | #define FTS_POWER_ON_TIME_COUNTER_B 0x007B |
| 46 | #define FTS_POWER_ON_TIME_COUNTER_C 0x007C |
| 47 | |
| 48 | #define FTS_PAGE_SELECT_REG 0x007F |
| 49 | |
| 50 | #define FTS_WATCHDOG_TIME_PRESET 0x000B |
| 51 | #define FTS_WATCHDOG_CONTROL 0x5081 |
| 52 | |
| 53 | #define FTS_NO_FAN_SENSORS 0x08 |
| 54 | #define FTS_NO_TEMP_SENSORS 0x10 |
| 55 | #define FTS_NO_VOLT_SENSORS 0x04 |
| 56 | |
| 57 | static struct i2c_device_id fts_id[] = { |
| 58 | { "ftsteutates", 0 }, |
| 59 | { } |
| 60 | }; |
| 61 | MODULE_DEVICE_TABLE(i2c, fts_id); |
| 62 | |
| 63 | enum WATCHDOG_RESOLUTION { |
| 64 | seconds = 1, |
| 65 | minutes = 60 |
| 66 | }; |
| 67 | |
| 68 | struct fts_data { |
| 69 | struct i2c_client *client; |
| 70 | /* update sensor data lock */ |
| 71 | struct mutex update_lock; |
| 72 | /* read/write register lock */ |
| 73 | struct mutex access_lock; |
| 74 | unsigned long last_updated; /* in jiffies */ |
| 75 | struct watchdog_device wdd; |
| 76 | enum WATCHDOG_RESOLUTION resolution; |
| 77 | bool valid; /* false until following fields are valid */ |
| 78 | |
| 79 | u8 volt[FTS_NO_VOLT_SENSORS]; |
| 80 | |
| 81 | u8 temp_input[FTS_NO_TEMP_SENSORS]; |
| 82 | u8 temp_alarm; |
| 83 | |
| 84 | u8 fan_present; |
| 85 | u8 fan_input[FTS_NO_FAN_SENSORS]; /* in rps */ |
| 86 | u8 fan_source[FTS_NO_FAN_SENSORS]; |
| 87 | u8 fan_alarm; |
| 88 | }; |
| 89 | |
| 90 | #define FTS_REG_FAN_INPUT(idx) ((idx) + 0x20) |
| 91 | #define FTS_REG_FAN_SOURCE(idx) ((idx) + 0x30) |
| 92 | #define FTS_REG_FAN_CONTROL(idx) (((idx) << 16) + 0x4881) |
| 93 | |
| 94 | #define FTS_REG_TEMP_INPUT(idx) ((idx) + 0x40) |
| 95 | #define FTS_REG_TEMP_CONTROL(idx) (((idx) << 16) + 0x0681) |
| 96 | |
| 97 | #define FTS_REG_VOLT(idx) ((idx) + 0x18) |
| 98 | |
| 99 | /*****************************************************************************/ |
| 100 | /* I2C Helper functions */ |
| 101 | /*****************************************************************************/ |
| 102 | static int fts_read_byte(struct i2c_client *client, unsigned short reg) |
| 103 | { |
| 104 | int ret; |
| 105 | unsigned char page = reg >> 8; |
| 106 | struct fts_data *data = dev_get_drvdata(&client->dev); |
| 107 | |
| 108 | mutex_lock(&data->access_lock); |
| 109 | |
| 110 | dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page); |
| 111 | ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page); |
| 112 | if (ret < 0) |
| 113 | goto error; |
| 114 | |
| 115 | reg &= 0xFF; |
| 116 | ret = i2c_smbus_read_byte_data(client, reg); |
| 117 | dev_dbg(&client->dev, "read - reg: 0x%.02x: val: 0x%.02x\n", reg, ret); |
| 118 | |
| 119 | error: |
| 120 | mutex_unlock(&data->access_lock); |
| 121 | return ret; |
| 122 | } |
| 123 | |
| 124 | static int fts_write_byte(struct i2c_client *client, unsigned short reg, |
| 125 | unsigned char value) |
| 126 | { |
| 127 | int ret; |
| 128 | unsigned char page = reg >> 8; |
| 129 | struct fts_data *data = dev_get_drvdata(&client->dev); |
| 130 | |
| 131 | mutex_lock(&data->access_lock); |
| 132 | |
| 133 | dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page); |
| 134 | ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page); |
| 135 | if (ret < 0) |
| 136 | goto error; |
| 137 | |
| 138 | reg &= 0xFF; |
| 139 | dev_dbg(&client->dev, |
| 140 | "write - reg: 0x%.02x: val: 0x%.02x\n", reg, value); |
| 141 | ret = i2c_smbus_write_byte_data(client, reg, value); |
| 142 | |
| 143 | error: |
| 144 | mutex_unlock(&data->access_lock); |
| 145 | return ret; |
| 146 | } |
| 147 | |
| 148 | /*****************************************************************************/ |
| 149 | /* Data Updater Helper function */ |
| 150 | /*****************************************************************************/ |
| 151 | static int fts_update_device(struct fts_data *data) |
| 152 | { |
| 153 | int i; |
| 154 | int err = 0; |
| 155 | |
| 156 | mutex_lock(&data->update_lock); |
| 157 | if (!time_after(jiffies, data->last_updated + 2 * HZ) && data->valid) |
| 158 | goto exit; |
| 159 | |
| 160 | err = fts_read_byte(data->client, FTS_DEVICE_STATUS_REG); |
| 161 | if (err < 0) |
| 162 | goto exit; |
| 163 | |
| 164 | data->valid = !!(err & 0x02); /* Data not ready yet */ |
| 165 | if (unlikely(!data->valid)) { |
| 166 | err = -EAGAIN; |
| 167 | goto exit; |
| 168 | } |
| 169 | |
| 170 | err = fts_read_byte(data->client, FTS_FAN_PRESENT_REG); |
| 171 | if (err < 0) |
| 172 | goto exit; |
| 173 | data->fan_present = err; |
| 174 | |
| 175 | err = fts_read_byte(data->client, FTS_FAN_EVENT_REG); |
| 176 | if (err < 0) |
| 177 | goto exit; |
| 178 | data->fan_alarm = err; |
| 179 | |
| 180 | for (i = 0; i < FTS_NO_FAN_SENSORS; i++) { |
| 181 | if (data->fan_present & BIT(i)) { |
| 182 | err = fts_read_byte(data->client, FTS_REG_FAN_INPUT(i)); |
| 183 | if (err < 0) |
| 184 | goto exit; |
| 185 | data->fan_input[i] = err; |
| 186 | |
| 187 | err = fts_read_byte(data->client, |
| 188 | FTS_REG_FAN_SOURCE(i)); |
| 189 | if (err < 0) |
| 190 | goto exit; |
| 191 | data->fan_source[i] = err; |
| 192 | } else { |
| 193 | data->fan_input[i] = 0; |
| 194 | data->fan_source[i] = 0; |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | err = fts_read_byte(data->client, FTS_SENSOR_EVENT_REG); |
| 199 | if (err < 0) |
| 200 | goto exit; |
| 201 | data->temp_alarm = err; |
| 202 | |
| 203 | for (i = 0; i < FTS_NO_TEMP_SENSORS; i++) { |
| 204 | err = fts_read_byte(data->client, FTS_REG_TEMP_INPUT(i)); |
| 205 | if (err < 0) |
| 206 | goto exit; |
| 207 | data->temp_input[i] = err; |
| 208 | } |
| 209 | |
| 210 | for (i = 0; i < FTS_NO_VOLT_SENSORS; i++) { |
| 211 | err = fts_read_byte(data->client, FTS_REG_VOLT(i)); |
| 212 | if (err < 0) |
| 213 | goto exit; |
| 214 | data->volt[i] = err; |
| 215 | } |
| 216 | data->last_updated = jiffies; |
| 217 | err = 0; |
| 218 | exit: |
| 219 | mutex_unlock(&data->update_lock); |
| 220 | return err; |
| 221 | } |
| 222 | |
| 223 | /*****************************************************************************/ |
| 224 | /* Watchdog functions */ |
| 225 | /*****************************************************************************/ |
| 226 | static int fts_wd_set_resolution(struct fts_data *data, |
| 227 | enum WATCHDOG_RESOLUTION resolution) |
| 228 | { |
| 229 | int ret; |
| 230 | |
| 231 | if (data->resolution == resolution) |
| 232 | return 0; |
| 233 | |
| 234 | ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL); |
| 235 | if (ret < 0) |
| 236 | return ret; |
| 237 | |
| 238 | if ((resolution == seconds && ret & BIT(1)) || |
| 239 | (resolution == minutes && (ret & BIT(1)) == 0)) { |
| 240 | data->resolution = resolution; |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | if (resolution == seconds) |
| 245 | set_bit(1, (unsigned long *)&ret); |
| 246 | else |
| 247 | ret &= ~BIT(1); |
| 248 | |
| 249 | ret = fts_write_byte(data->client, FTS_WATCHDOG_CONTROL, ret); |
| 250 | if (ret < 0) |
| 251 | return ret; |
| 252 | |
| 253 | data->resolution = resolution; |
| 254 | return ret; |
| 255 | } |
| 256 | |
| 257 | static int fts_wd_set_timeout(struct watchdog_device *wdd, unsigned int timeout) |
| 258 | { |
| 259 | struct fts_data *data; |
| 260 | enum WATCHDOG_RESOLUTION resolution = seconds; |
| 261 | int ret; |
| 262 | |
| 263 | data = watchdog_get_drvdata(wdd); |
| 264 | /* switch watchdog resolution to minutes if timeout does not fit |
| 265 | * into a byte |
| 266 | */ |
| 267 | if (timeout > 0xFF) { |
| 268 | timeout = DIV_ROUND_UP(timeout, 60) * 60; |
| 269 | resolution = minutes; |
| 270 | } |
| 271 | |
| 272 | ret = fts_wd_set_resolution(data, resolution); |
| 273 | if (ret < 0) |
| 274 | return ret; |
| 275 | |
| 276 | wdd->timeout = timeout; |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | static int fts_wd_start(struct watchdog_device *wdd) |
| 281 | { |
| 282 | struct fts_data *data = watchdog_get_drvdata(wdd); |
| 283 | |
| 284 | return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET, |
| 285 | wdd->timeout / (u8)data->resolution); |
| 286 | } |
| 287 | |
| 288 | static int fts_wd_stop(struct watchdog_device *wdd) |
| 289 | { |
| 290 | struct fts_data *data; |
| 291 | |
| 292 | data = watchdog_get_drvdata(wdd); |
| 293 | return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET, 0); |
| 294 | } |
| 295 | |
| 296 | static const struct watchdog_info fts_wd_info = { |
| 297 | .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, |
| 298 | .identity = "FTS Teutates Hardware Watchdog", |
| 299 | }; |
| 300 | |
| 301 | static const struct watchdog_ops fts_wd_ops = { |
| 302 | .owner = THIS_MODULE, |
| 303 | .start = fts_wd_start, |
| 304 | .stop = fts_wd_stop, |
| 305 | .set_timeout = fts_wd_set_timeout, |
| 306 | }; |
| 307 | |
| 308 | static int fts_watchdog_init(struct fts_data *data) |
| 309 | { |
| 310 | int timeout, ret; |
| 311 | |
| 312 | watchdog_set_drvdata(&data->wdd, data); |
| 313 | |
| 314 | timeout = fts_read_byte(data->client, FTS_WATCHDOG_TIME_PRESET); |
| 315 | if (timeout < 0) |
| 316 | return timeout; |
| 317 | |
| 318 | /* watchdog not running, set timeout to a default of 60 sec. */ |
| 319 | if (timeout == 0) { |
| 320 | ret = fts_wd_set_resolution(data, seconds); |
| 321 | if (ret < 0) |
| 322 | return ret; |
| 323 | data->wdd.timeout = 60; |
| 324 | } else { |
| 325 | ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL); |
| 326 | if (ret < 0) |
| 327 | return ret; |
| 328 | |
| 329 | data->resolution = ret & BIT(1) ? seconds : minutes; |
| 330 | data->wdd.timeout = timeout * (u8)data->resolution; |
| 331 | set_bit(WDOG_HW_RUNNING, &data->wdd.status); |
| 332 | } |
| 333 | |
| 334 | /* Register our watchdog part */ |
| 335 | data->wdd.info = &fts_wd_info; |
| 336 | data->wdd.ops = &fts_wd_ops; |
| 337 | data->wdd.parent = &data->client->dev; |
| 338 | data->wdd.min_timeout = 1; |
| 339 | |
| 340 | /* max timeout 255 minutes. */ |
| 341 | data->wdd.max_hw_heartbeat_ms = 0xFF * 60 * MSEC_PER_SEC; |
| 342 | |
| 343 | return watchdog_register_device(&data->wdd); |
| 344 | } |
| 345 | |
| 346 | /*****************************************************************************/ |
| 347 | /* SysFS handler functions */ |
| 348 | /*****************************************************************************/ |
| 349 | static ssize_t show_in_value(struct device *dev, |
| 350 | struct device_attribute *devattr, char *buf) |
| 351 | { |
| 352 | struct fts_data *data = dev_get_drvdata(dev); |
| 353 | int index = to_sensor_dev_attr(devattr)->index; |
| 354 | int err; |
| 355 | |
| 356 | err = fts_update_device(data); |
| 357 | if (err < 0) |
| 358 | return err; |
| 359 | |
| 360 | return sprintf(buf, "%u\n", data->volt[index]); |
| 361 | } |
| 362 | |
| 363 | static ssize_t show_temp_value(struct device *dev, |
| 364 | struct device_attribute *devattr, char *buf) |
| 365 | { |
| 366 | struct fts_data *data = dev_get_drvdata(dev); |
| 367 | int index = to_sensor_dev_attr(devattr)->index; |
| 368 | int err; |
| 369 | |
| 370 | err = fts_update_device(data); |
| 371 | if (err < 0) |
| 372 | return err; |
| 373 | |
| 374 | return sprintf(buf, "%u\n", data->temp_input[index]); |
| 375 | } |
| 376 | |
| 377 | static ssize_t show_temp_fault(struct device *dev, |
| 378 | struct device_attribute *devattr, char *buf) |
| 379 | { |
| 380 | struct fts_data *data = dev_get_drvdata(dev); |
| 381 | int index = to_sensor_dev_attr(devattr)->index; |
| 382 | int err; |
| 383 | |
| 384 | err = fts_update_device(data); |
| 385 | if (err < 0) |
| 386 | return err; |
| 387 | |
| 388 | /* 00h Temperature = Sensor Error */ |
| 389 | return sprintf(buf, "%d\n", data->temp_input[index] == 0); |
| 390 | } |
| 391 | |
| 392 | static ssize_t show_temp_alarm(struct device *dev, |
| 393 | struct device_attribute *devattr, char *buf) |
| 394 | { |
| 395 | struct fts_data *data = dev_get_drvdata(dev); |
| 396 | int index = to_sensor_dev_attr(devattr)->index; |
| 397 | int err; |
| 398 | |
| 399 | err = fts_update_device(data); |
| 400 | if (err < 0) |
| 401 | return err; |
| 402 | |
| 403 | return sprintf(buf, "%u\n", !!(data->temp_alarm & BIT(index))); |
| 404 | } |
| 405 | |
| 406 | static ssize_t |
| 407 | clear_temp_alarm(struct device *dev, struct device_attribute *devattr, |
| 408 | const char *buf, size_t count) |
| 409 | { |
| 410 | struct fts_data *data = dev_get_drvdata(dev); |
| 411 | int index = to_sensor_dev_attr(devattr)->index; |
| 412 | long ret; |
| 413 | |
| 414 | ret = fts_update_device(data); |
| 415 | if (ret < 0) |
| 416 | return ret; |
| 417 | |
| 418 | if (kstrtoul(buf, 10, &ret) || ret != 0) |
| 419 | return -EINVAL; |
| 420 | |
| 421 | mutex_lock(&data->update_lock); |
| 422 | ret = fts_read_byte(data->client, FTS_REG_TEMP_CONTROL(index)); |
| 423 | if (ret < 0) |
| 424 | goto error; |
| 425 | |
| 426 | ret = fts_write_byte(data->client, FTS_REG_TEMP_CONTROL(index), |
| 427 | ret | 0x1); |
| 428 | if (ret < 0) |
| 429 | goto error; |
| 430 | |
| 431 | data->valid = false; |
| 432 | error: |
| 433 | mutex_unlock(&data->update_lock); |
| 434 | return ret; |
| 435 | } |
| 436 | |
| 437 | static ssize_t show_fan_value(struct device *dev, |
| 438 | struct device_attribute *devattr, char *buf) |
| 439 | { |
| 440 | struct fts_data *data = dev_get_drvdata(dev); |
| 441 | int index = to_sensor_dev_attr(devattr)->index; |
| 442 | int err; |
| 443 | |
| 444 | err = fts_update_device(data); |
| 445 | if (err < 0) |
| 446 | return err; |
| 447 | |
| 448 | return sprintf(buf, "%u\n", data->fan_input[index]); |
| 449 | } |
| 450 | |
| 451 | static ssize_t show_fan_source(struct device *dev, |
| 452 | struct device_attribute *devattr, char *buf) |
| 453 | { |
| 454 | struct fts_data *data = dev_get_drvdata(dev); |
| 455 | int index = to_sensor_dev_attr(devattr)->index; |
| 456 | int err; |
| 457 | |
| 458 | err = fts_update_device(data); |
| 459 | if (err < 0) |
| 460 | return err; |
| 461 | |
| 462 | return sprintf(buf, "%u\n", data->fan_source[index]); |
| 463 | } |
| 464 | |
| 465 | static ssize_t show_fan_alarm(struct device *dev, |
| 466 | struct device_attribute *devattr, char *buf) |
| 467 | { |
| 468 | struct fts_data *data = dev_get_drvdata(dev); |
| 469 | int index = to_sensor_dev_attr(devattr)->index; |
| 470 | int err; |
| 471 | |
| 472 | err = fts_update_device(data); |
| 473 | if (err < 0) |
| 474 | return err; |
| 475 | |
| 476 | return sprintf(buf, "%d\n", !!(data->fan_alarm & BIT(index))); |
| 477 | } |
| 478 | |
| 479 | static ssize_t |
| 480 | clear_fan_alarm(struct device *dev, struct device_attribute *devattr, |
| 481 | const char *buf, size_t count) |
| 482 | { |
| 483 | struct fts_data *data = dev_get_drvdata(dev); |
| 484 | int index = to_sensor_dev_attr(devattr)->index; |
| 485 | long ret; |
| 486 | |
| 487 | ret = fts_update_device(data); |
| 488 | if (ret < 0) |
| 489 | return ret; |
| 490 | |
| 491 | if (kstrtoul(buf, 10, &ret) || ret != 0) |
| 492 | return -EINVAL; |
| 493 | |
| 494 | mutex_lock(&data->update_lock); |
| 495 | ret = fts_read_byte(data->client, FTS_REG_FAN_CONTROL(index)); |
| 496 | if (ret < 0) |
| 497 | goto error; |
| 498 | |
| 499 | ret = fts_write_byte(data->client, FTS_REG_FAN_CONTROL(index), |
| 500 | ret | 0x1); |
| 501 | if (ret < 0) |
| 502 | goto error; |
| 503 | |
| 504 | data->valid = false; |
| 505 | error: |
| 506 | mutex_unlock(&data->update_lock); |
| 507 | return ret; |
| 508 | } |
| 509 | |
| 510 | /*****************************************************************************/ |
| 511 | /* SysFS structs */ |
| 512 | /*****************************************************************************/ |
| 513 | |
| 514 | /* Temprature sensors */ |
| 515 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_value, NULL, 0); |
| 516 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_value, NULL, 1); |
| 517 | static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp_value, NULL, 2); |
| 518 | static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp_value, NULL, 3); |
| 519 | static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp_value, NULL, 4); |
| 520 | static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp_value, NULL, 5); |
| 521 | static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp_value, NULL, 6); |
| 522 | static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp_value, NULL, 7); |
| 523 | static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp_value, NULL, 8); |
| 524 | static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp_value, NULL, 9); |
| 525 | static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO, show_temp_value, NULL, 10); |
| 526 | static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO, show_temp_value, NULL, 11); |
| 527 | static SENSOR_DEVICE_ATTR(temp13_input, S_IRUGO, show_temp_value, NULL, 12); |
| 528 | static SENSOR_DEVICE_ATTR(temp14_input, S_IRUGO, show_temp_value, NULL, 13); |
| 529 | static SENSOR_DEVICE_ATTR(temp15_input, S_IRUGO, show_temp_value, NULL, 14); |
| 530 | static SENSOR_DEVICE_ATTR(temp16_input, S_IRUGO, show_temp_value, NULL, 15); |
| 531 | |
| 532 | static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0); |
| 533 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1); |
| 534 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2); |
| 535 | static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3); |
| 536 | static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4); |
| 537 | static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5); |
| 538 | static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_temp_fault, NULL, 6); |
| 539 | static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_temp_fault, NULL, 7); |
| 540 | static SENSOR_DEVICE_ATTR(temp9_fault, S_IRUGO, show_temp_fault, NULL, 8); |
| 541 | static SENSOR_DEVICE_ATTR(temp10_fault, S_IRUGO, show_temp_fault, NULL, 9); |
| 542 | static SENSOR_DEVICE_ATTR(temp11_fault, S_IRUGO, show_temp_fault, NULL, 10); |
| 543 | static SENSOR_DEVICE_ATTR(temp12_fault, S_IRUGO, show_temp_fault, NULL, 11); |
| 544 | static SENSOR_DEVICE_ATTR(temp13_fault, S_IRUGO, show_temp_fault, NULL, 12); |
| 545 | static SENSOR_DEVICE_ATTR(temp14_fault, S_IRUGO, show_temp_fault, NULL, 13); |
| 546 | static SENSOR_DEVICE_ATTR(temp15_fault, S_IRUGO, show_temp_fault, NULL, 14); |
| 547 | static SENSOR_DEVICE_ATTR(temp16_fault, S_IRUGO, show_temp_fault, NULL, 15); |
| 548 | |
| 549 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 550 | clear_temp_alarm, 0); |
| 551 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 552 | clear_temp_alarm, 1); |
| 553 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 554 | clear_temp_alarm, 2); |
| 555 | static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 556 | clear_temp_alarm, 3); |
| 557 | static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 558 | clear_temp_alarm, 4); |
| 559 | static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 560 | clear_temp_alarm, 5); |
| 561 | static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 562 | clear_temp_alarm, 6); |
| 563 | static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 564 | clear_temp_alarm, 7); |
| 565 | static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 566 | clear_temp_alarm, 8); |
| 567 | static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 568 | clear_temp_alarm, 9); |
| 569 | static SENSOR_DEVICE_ATTR(temp11_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 570 | clear_temp_alarm, 10); |
| 571 | static SENSOR_DEVICE_ATTR(temp12_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 572 | clear_temp_alarm, 11); |
| 573 | static SENSOR_DEVICE_ATTR(temp13_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 574 | clear_temp_alarm, 12); |
| 575 | static SENSOR_DEVICE_ATTR(temp14_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 576 | clear_temp_alarm, 13); |
| 577 | static SENSOR_DEVICE_ATTR(temp15_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 578 | clear_temp_alarm, 14); |
| 579 | static SENSOR_DEVICE_ATTR(temp16_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, |
| 580 | clear_temp_alarm, 15); |
| 581 | |
| 582 | static struct attribute *fts_temp_attrs[] = { |
| 583 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
| 584 | &sensor_dev_attr_temp2_input.dev_attr.attr, |
| 585 | &sensor_dev_attr_temp3_input.dev_attr.attr, |
| 586 | &sensor_dev_attr_temp4_input.dev_attr.attr, |
| 587 | &sensor_dev_attr_temp5_input.dev_attr.attr, |
| 588 | &sensor_dev_attr_temp6_input.dev_attr.attr, |
| 589 | &sensor_dev_attr_temp7_input.dev_attr.attr, |
| 590 | &sensor_dev_attr_temp8_input.dev_attr.attr, |
| 591 | &sensor_dev_attr_temp9_input.dev_attr.attr, |
| 592 | &sensor_dev_attr_temp10_input.dev_attr.attr, |
| 593 | &sensor_dev_attr_temp11_input.dev_attr.attr, |
| 594 | &sensor_dev_attr_temp12_input.dev_attr.attr, |
| 595 | &sensor_dev_attr_temp13_input.dev_attr.attr, |
| 596 | &sensor_dev_attr_temp14_input.dev_attr.attr, |
| 597 | &sensor_dev_attr_temp15_input.dev_attr.attr, |
| 598 | &sensor_dev_attr_temp16_input.dev_attr.attr, |
| 599 | |
| 600 | &sensor_dev_attr_temp1_fault.dev_attr.attr, |
| 601 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
| 602 | &sensor_dev_attr_temp3_fault.dev_attr.attr, |
| 603 | &sensor_dev_attr_temp4_fault.dev_attr.attr, |
| 604 | &sensor_dev_attr_temp5_fault.dev_attr.attr, |
| 605 | &sensor_dev_attr_temp6_fault.dev_attr.attr, |
| 606 | &sensor_dev_attr_temp7_fault.dev_attr.attr, |
| 607 | &sensor_dev_attr_temp8_fault.dev_attr.attr, |
| 608 | &sensor_dev_attr_temp9_fault.dev_attr.attr, |
| 609 | &sensor_dev_attr_temp10_fault.dev_attr.attr, |
| 610 | &sensor_dev_attr_temp11_fault.dev_attr.attr, |
| 611 | &sensor_dev_attr_temp12_fault.dev_attr.attr, |
| 612 | &sensor_dev_attr_temp13_fault.dev_attr.attr, |
| 613 | &sensor_dev_attr_temp14_fault.dev_attr.attr, |
| 614 | &sensor_dev_attr_temp15_fault.dev_attr.attr, |
| 615 | &sensor_dev_attr_temp16_fault.dev_attr.attr, |
| 616 | |
| 617 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
| 618 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
| 619 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
| 620 | &sensor_dev_attr_temp4_alarm.dev_attr.attr, |
| 621 | &sensor_dev_attr_temp5_alarm.dev_attr.attr, |
| 622 | &sensor_dev_attr_temp6_alarm.dev_attr.attr, |
| 623 | &sensor_dev_attr_temp7_alarm.dev_attr.attr, |
| 624 | &sensor_dev_attr_temp8_alarm.dev_attr.attr, |
| 625 | &sensor_dev_attr_temp9_alarm.dev_attr.attr, |
| 626 | &sensor_dev_attr_temp10_alarm.dev_attr.attr, |
| 627 | &sensor_dev_attr_temp11_alarm.dev_attr.attr, |
| 628 | &sensor_dev_attr_temp12_alarm.dev_attr.attr, |
| 629 | &sensor_dev_attr_temp13_alarm.dev_attr.attr, |
| 630 | &sensor_dev_attr_temp14_alarm.dev_attr.attr, |
| 631 | &sensor_dev_attr_temp15_alarm.dev_attr.attr, |
| 632 | &sensor_dev_attr_temp16_alarm.dev_attr.attr, |
| 633 | NULL |
| 634 | }; |
| 635 | |
| 636 | /* Fans */ |
| 637 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_value, NULL, 0); |
| 638 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_value, NULL, 1); |
| 639 | static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan_value, NULL, 2); |
| 640 | static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan_value, NULL, 3); |
| 641 | static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan_value, NULL, 4); |
| 642 | static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan_value, NULL, 5); |
| 643 | static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan_value, NULL, 6); |
| 644 | static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan_value, NULL, 7); |
| 645 | |
| 646 | static SENSOR_DEVICE_ATTR(fan1_source, S_IRUGO, show_fan_source, NULL, 0); |
| 647 | static SENSOR_DEVICE_ATTR(fan2_source, S_IRUGO, show_fan_source, NULL, 1); |
| 648 | static SENSOR_DEVICE_ATTR(fan3_source, S_IRUGO, show_fan_source, NULL, 2); |
| 649 | static SENSOR_DEVICE_ATTR(fan4_source, S_IRUGO, show_fan_source, NULL, 3); |
| 650 | static SENSOR_DEVICE_ATTR(fan5_source, S_IRUGO, show_fan_source, NULL, 4); |
| 651 | static SENSOR_DEVICE_ATTR(fan6_source, S_IRUGO, show_fan_source, NULL, 5); |
| 652 | static SENSOR_DEVICE_ATTR(fan7_source, S_IRUGO, show_fan_source, NULL, 6); |
| 653 | static SENSOR_DEVICE_ATTR(fan8_source, S_IRUGO, show_fan_source, NULL, 7); |
| 654 | |
| 655 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO | S_IWUSR, |
| 656 | show_fan_alarm, clear_fan_alarm, 0); |
| 657 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO | S_IWUSR, |
| 658 | show_fan_alarm, clear_fan_alarm, 1); |
| 659 | static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO | S_IWUSR, |
| 660 | show_fan_alarm, clear_fan_alarm, 2); |
| 661 | static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO | S_IWUSR, |
| 662 | show_fan_alarm, clear_fan_alarm, 3); |
| 663 | static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO | S_IWUSR, |
| 664 | show_fan_alarm, clear_fan_alarm, 4); |
| 665 | static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO | S_IWUSR, |
| 666 | show_fan_alarm, clear_fan_alarm, 5); |
| 667 | static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO | S_IWUSR, |
| 668 | show_fan_alarm, clear_fan_alarm, 6); |
| 669 | static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO | S_IWUSR, |
| 670 | show_fan_alarm, clear_fan_alarm, 7); |
| 671 | |
| 672 | static struct attribute *fts_fan_attrs[] = { |
| 673 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
| 674 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
| 675 | &sensor_dev_attr_fan3_input.dev_attr.attr, |
| 676 | &sensor_dev_attr_fan4_input.dev_attr.attr, |
| 677 | &sensor_dev_attr_fan5_input.dev_attr.attr, |
| 678 | &sensor_dev_attr_fan6_input.dev_attr.attr, |
| 679 | &sensor_dev_attr_fan7_input.dev_attr.attr, |
| 680 | &sensor_dev_attr_fan8_input.dev_attr.attr, |
| 681 | |
| 682 | &sensor_dev_attr_fan1_source.dev_attr.attr, |
| 683 | &sensor_dev_attr_fan2_source.dev_attr.attr, |
| 684 | &sensor_dev_attr_fan3_source.dev_attr.attr, |
| 685 | &sensor_dev_attr_fan4_source.dev_attr.attr, |
| 686 | &sensor_dev_attr_fan5_source.dev_attr.attr, |
| 687 | &sensor_dev_attr_fan6_source.dev_attr.attr, |
| 688 | &sensor_dev_attr_fan7_source.dev_attr.attr, |
| 689 | &sensor_dev_attr_fan8_source.dev_attr.attr, |
| 690 | |
| 691 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
| 692 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
| 693 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, |
| 694 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, |
| 695 | &sensor_dev_attr_fan5_alarm.dev_attr.attr, |
| 696 | &sensor_dev_attr_fan6_alarm.dev_attr.attr, |
| 697 | &sensor_dev_attr_fan7_alarm.dev_attr.attr, |
| 698 | &sensor_dev_attr_fan8_alarm.dev_attr.attr, |
| 699 | NULL |
| 700 | }; |
| 701 | |
| 702 | /* Voltages */ |
| 703 | static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in_value, NULL, 0); |
| 704 | static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in_value, NULL, 1); |
| 705 | static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in_value, NULL, 2); |
| 706 | static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in_value, NULL, 3); |
| 707 | static struct attribute *fts_voltage_attrs[] = { |
| 708 | &sensor_dev_attr_in1_input.dev_attr.attr, |
| 709 | &sensor_dev_attr_in2_input.dev_attr.attr, |
| 710 | &sensor_dev_attr_in3_input.dev_attr.attr, |
| 711 | &sensor_dev_attr_in4_input.dev_attr.attr, |
| 712 | NULL |
| 713 | }; |
| 714 | |
| 715 | static const struct attribute_group fts_voltage_attr_group = { |
| 716 | .attrs = fts_voltage_attrs |
| 717 | }; |
| 718 | |
| 719 | static const struct attribute_group fts_temp_attr_group = { |
| 720 | .attrs = fts_temp_attrs |
| 721 | }; |
| 722 | |
| 723 | static const struct attribute_group fts_fan_attr_group = { |
| 724 | .attrs = fts_fan_attrs |
| 725 | }; |
| 726 | |
| 727 | static const struct attribute_group *fts_attr_groups[] = { |
| 728 | &fts_voltage_attr_group, |
| 729 | &fts_temp_attr_group, |
| 730 | &fts_fan_attr_group, |
| 731 | NULL |
| 732 | }; |
| 733 | |
| 734 | /*****************************************************************************/ |
| 735 | /* Module initialization / remove functions */ |
| 736 | /*****************************************************************************/ |
| 737 | static int fts_remove(struct i2c_client *client) |
| 738 | { |
| 739 | struct fts_data *data = dev_get_drvdata(&client->dev); |
| 740 | |
| 741 | watchdog_unregister_device(&data->wdd); |
| 742 | return 0; |
| 743 | } |
| 744 | |
| 745 | static int fts_probe(struct i2c_client *client, const struct i2c_device_id *id) |
| 746 | { |
| 747 | u8 revision; |
| 748 | struct fts_data *data; |
| 749 | int err; |
| 750 | s8 deviceid; |
| 751 | struct device *hwmon_dev; |
| 752 | |
| 753 | if (client->addr != 0x73) |
| 754 | return -ENODEV; |
| 755 | |
| 756 | /* Baseboard Management Controller check */ |
| 757 | deviceid = i2c_smbus_read_byte_data(client, FTS_DEVICE_ID_REG); |
| 758 | if (deviceid > 0 && (deviceid & 0xF0) == 0x10) { |
| 759 | switch (deviceid & 0x0F) { |
| 760 | case 0x01: |
| 761 | break; |
| 762 | default: |
| 763 | dev_dbg(&client->dev, |
| 764 | "No Baseboard Management Controller\n"); |
| 765 | return -ENODEV; |
| 766 | } |
| 767 | } else { |
| 768 | dev_dbg(&client->dev, "No fujitsu board\n"); |
| 769 | return -ENODEV; |
| 770 | } |
| 771 | |
| 772 | data = devm_kzalloc(&client->dev, sizeof(struct fts_data), |
| 773 | GFP_KERNEL); |
| 774 | if (!data) |
| 775 | return -ENOMEM; |
| 776 | |
| 777 | mutex_init(&data->update_lock); |
| 778 | mutex_init(&data->access_lock); |
| 779 | data->client = client; |
| 780 | dev_set_drvdata(&client->dev, data); |
| 781 | |
| 782 | err = i2c_smbus_read_byte_data(client, FTS_DEVICE_REVISION_REG); |
| 783 | if (err < 0) |
| 784 | return err; |
| 785 | revision = err; |
| 786 | |
| 787 | hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, |
| 788 | "ftsteutates", |
| 789 | data, |
| 790 | fts_attr_groups); |
| 791 | if (IS_ERR(hwmon_dev)) |
| 792 | return PTR_ERR(hwmon_dev); |
| 793 | |
| 794 | err = fts_watchdog_init(data); |
| 795 | if (err) |
| 796 | return err; |
| 797 | |
| 798 | dev_info(&client->dev, "Detected FTS Teutates chip, revision: %d.%d\n", |
| 799 | (revision & 0xF0) >> 4, revision & 0x0F); |
| 800 | return 0; |
| 801 | } |
| 802 | |
| 803 | /*****************************************************************************/ |
| 804 | /* Module Details */ |
| 805 | /*****************************************************************************/ |
| 806 | static struct i2c_driver fts_driver = { |
| 807 | .driver = { |
| 808 | .name = "ftsteutates", |
| 809 | }, |
| 810 | .id_table = fts_id, |
| 811 | .probe = fts_probe, |
| 812 | .remove = fts_remove, |
| 813 | }; |
| 814 | |
| 815 | module_i2c_driver(fts_driver); |
| 816 | |
| 817 | MODULE_AUTHOR("Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com>"); |
| 818 | MODULE_DESCRIPTION("FTS Teutates driver"); |
| 819 | MODULE_LICENSE("GPL"); |