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08426eda TC |
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> | |
08426eda TC |
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) | |
4c8702b3 | 245 | ret |= BIT(1); |
08426eda TC |
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"); |