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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 | ||
2d5aee43 TC |
39 | #define FTS_DEVICE_DETECT_REG_1 0x0C |
40 | #define FTS_DEVICE_DETECT_REG_2 0x0D | |
41 | #define FTS_DEVICE_DETECT_REG_3 0x0E | |
42 | ||
08426eda TC |
43 | #define FTS_SENSOR_EVENT_REG 0x0010 |
44 | ||
45 | #define FTS_FAN_EVENT_REG 0x0014 | |
46 | #define FTS_FAN_PRESENT_REG 0x0015 | |
47 | ||
48 | #define FTS_POWER_ON_TIME_COUNTER_A 0x007A | |
49 | #define FTS_POWER_ON_TIME_COUNTER_B 0x007B | |
50 | #define FTS_POWER_ON_TIME_COUNTER_C 0x007C | |
51 | ||
52 | #define FTS_PAGE_SELECT_REG 0x007F | |
53 | ||
54 | #define FTS_WATCHDOG_TIME_PRESET 0x000B | |
55 | #define FTS_WATCHDOG_CONTROL 0x5081 | |
56 | ||
57 | #define FTS_NO_FAN_SENSORS 0x08 | |
58 | #define FTS_NO_TEMP_SENSORS 0x10 | |
59 | #define FTS_NO_VOLT_SENSORS 0x04 | |
60 | ||
2d5aee43 TC |
61 | static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; |
62 | ||
08426eda TC |
63 | static struct i2c_device_id fts_id[] = { |
64 | { "ftsteutates", 0 }, | |
65 | { } | |
66 | }; | |
67 | MODULE_DEVICE_TABLE(i2c, fts_id); | |
68 | ||
69 | enum WATCHDOG_RESOLUTION { | |
70 | seconds = 1, | |
71 | minutes = 60 | |
72 | }; | |
73 | ||
74 | struct fts_data { | |
75 | struct i2c_client *client; | |
76 | /* update sensor data lock */ | |
77 | struct mutex update_lock; | |
78 | /* read/write register lock */ | |
79 | struct mutex access_lock; | |
80 | unsigned long last_updated; /* in jiffies */ | |
81 | struct watchdog_device wdd; | |
82 | enum WATCHDOG_RESOLUTION resolution; | |
83 | bool valid; /* false until following fields are valid */ | |
84 | ||
85 | u8 volt[FTS_NO_VOLT_SENSORS]; | |
86 | ||
87 | u8 temp_input[FTS_NO_TEMP_SENSORS]; | |
88 | u8 temp_alarm; | |
89 | ||
90 | u8 fan_present; | |
91 | u8 fan_input[FTS_NO_FAN_SENSORS]; /* in rps */ | |
92 | u8 fan_source[FTS_NO_FAN_SENSORS]; | |
93 | u8 fan_alarm; | |
94 | }; | |
95 | ||
96 | #define FTS_REG_FAN_INPUT(idx) ((idx) + 0x20) | |
97 | #define FTS_REG_FAN_SOURCE(idx) ((idx) + 0x30) | |
98 | #define FTS_REG_FAN_CONTROL(idx) (((idx) << 16) + 0x4881) | |
99 | ||
100 | #define FTS_REG_TEMP_INPUT(idx) ((idx) + 0x40) | |
101 | #define FTS_REG_TEMP_CONTROL(idx) (((idx) << 16) + 0x0681) | |
102 | ||
103 | #define FTS_REG_VOLT(idx) ((idx) + 0x18) | |
104 | ||
105 | /*****************************************************************************/ | |
106 | /* I2C Helper functions */ | |
107 | /*****************************************************************************/ | |
108 | static int fts_read_byte(struct i2c_client *client, unsigned short reg) | |
109 | { | |
110 | int ret; | |
111 | unsigned char page = reg >> 8; | |
112 | struct fts_data *data = dev_get_drvdata(&client->dev); | |
113 | ||
114 | mutex_lock(&data->access_lock); | |
115 | ||
116 | dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page); | |
117 | ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page); | |
118 | if (ret < 0) | |
119 | goto error; | |
120 | ||
121 | reg &= 0xFF; | |
122 | ret = i2c_smbus_read_byte_data(client, reg); | |
123 | dev_dbg(&client->dev, "read - reg: 0x%.02x: val: 0x%.02x\n", reg, ret); | |
124 | ||
125 | error: | |
126 | mutex_unlock(&data->access_lock); | |
127 | return ret; | |
128 | } | |
129 | ||
130 | static int fts_write_byte(struct i2c_client *client, unsigned short reg, | |
131 | unsigned char value) | |
132 | { | |
133 | int ret; | |
134 | unsigned char page = reg >> 8; | |
135 | struct fts_data *data = dev_get_drvdata(&client->dev); | |
136 | ||
137 | mutex_lock(&data->access_lock); | |
138 | ||
139 | dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page); | |
140 | ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page); | |
141 | if (ret < 0) | |
142 | goto error; | |
143 | ||
144 | reg &= 0xFF; | |
145 | dev_dbg(&client->dev, | |
146 | "write - reg: 0x%.02x: val: 0x%.02x\n", reg, value); | |
147 | ret = i2c_smbus_write_byte_data(client, reg, value); | |
148 | ||
149 | error: | |
150 | mutex_unlock(&data->access_lock); | |
151 | return ret; | |
152 | } | |
153 | ||
154 | /*****************************************************************************/ | |
155 | /* Data Updater Helper function */ | |
156 | /*****************************************************************************/ | |
157 | static int fts_update_device(struct fts_data *data) | |
158 | { | |
159 | int i; | |
160 | int err = 0; | |
161 | ||
162 | mutex_lock(&data->update_lock); | |
163 | if (!time_after(jiffies, data->last_updated + 2 * HZ) && data->valid) | |
164 | goto exit; | |
165 | ||
166 | err = fts_read_byte(data->client, FTS_DEVICE_STATUS_REG); | |
167 | if (err < 0) | |
168 | goto exit; | |
169 | ||
170 | data->valid = !!(err & 0x02); /* Data not ready yet */ | |
171 | if (unlikely(!data->valid)) { | |
172 | err = -EAGAIN; | |
173 | goto exit; | |
174 | } | |
175 | ||
176 | err = fts_read_byte(data->client, FTS_FAN_PRESENT_REG); | |
177 | if (err < 0) | |
178 | goto exit; | |
179 | data->fan_present = err; | |
180 | ||
181 | err = fts_read_byte(data->client, FTS_FAN_EVENT_REG); | |
182 | if (err < 0) | |
183 | goto exit; | |
184 | data->fan_alarm = err; | |
185 | ||
186 | for (i = 0; i < FTS_NO_FAN_SENSORS; i++) { | |
187 | if (data->fan_present & BIT(i)) { | |
188 | err = fts_read_byte(data->client, FTS_REG_FAN_INPUT(i)); | |
189 | if (err < 0) | |
190 | goto exit; | |
191 | data->fan_input[i] = err; | |
192 | ||
193 | err = fts_read_byte(data->client, | |
194 | FTS_REG_FAN_SOURCE(i)); | |
195 | if (err < 0) | |
196 | goto exit; | |
197 | data->fan_source[i] = err; | |
198 | } else { | |
199 | data->fan_input[i] = 0; | |
200 | data->fan_source[i] = 0; | |
201 | } | |
202 | } | |
203 | ||
204 | err = fts_read_byte(data->client, FTS_SENSOR_EVENT_REG); | |
205 | if (err < 0) | |
206 | goto exit; | |
207 | data->temp_alarm = err; | |
208 | ||
209 | for (i = 0; i < FTS_NO_TEMP_SENSORS; i++) { | |
210 | err = fts_read_byte(data->client, FTS_REG_TEMP_INPUT(i)); | |
211 | if (err < 0) | |
212 | goto exit; | |
213 | data->temp_input[i] = err; | |
214 | } | |
215 | ||
216 | for (i = 0; i < FTS_NO_VOLT_SENSORS; i++) { | |
217 | err = fts_read_byte(data->client, FTS_REG_VOLT(i)); | |
218 | if (err < 0) | |
219 | goto exit; | |
220 | data->volt[i] = err; | |
221 | } | |
222 | data->last_updated = jiffies; | |
223 | err = 0; | |
224 | exit: | |
225 | mutex_unlock(&data->update_lock); | |
226 | return err; | |
227 | } | |
228 | ||
229 | /*****************************************************************************/ | |
230 | /* Watchdog functions */ | |
231 | /*****************************************************************************/ | |
232 | static int fts_wd_set_resolution(struct fts_data *data, | |
233 | enum WATCHDOG_RESOLUTION resolution) | |
234 | { | |
235 | int ret; | |
236 | ||
237 | if (data->resolution == resolution) | |
238 | return 0; | |
239 | ||
240 | ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL); | |
241 | if (ret < 0) | |
242 | return ret; | |
243 | ||
244 | if ((resolution == seconds && ret & BIT(1)) || | |
245 | (resolution == minutes && (ret & BIT(1)) == 0)) { | |
246 | data->resolution = resolution; | |
247 | return 0; | |
248 | } | |
249 | ||
250 | if (resolution == seconds) | |
4c8702b3 | 251 | ret |= BIT(1); |
08426eda TC |
252 | else |
253 | ret &= ~BIT(1); | |
254 | ||
255 | ret = fts_write_byte(data->client, FTS_WATCHDOG_CONTROL, ret); | |
256 | if (ret < 0) | |
257 | return ret; | |
258 | ||
259 | data->resolution = resolution; | |
260 | return ret; | |
261 | } | |
262 | ||
263 | static int fts_wd_set_timeout(struct watchdog_device *wdd, unsigned int timeout) | |
264 | { | |
265 | struct fts_data *data; | |
266 | enum WATCHDOG_RESOLUTION resolution = seconds; | |
267 | int ret; | |
268 | ||
269 | data = watchdog_get_drvdata(wdd); | |
270 | /* switch watchdog resolution to minutes if timeout does not fit | |
271 | * into a byte | |
272 | */ | |
273 | if (timeout > 0xFF) { | |
274 | timeout = DIV_ROUND_UP(timeout, 60) * 60; | |
275 | resolution = minutes; | |
276 | } | |
277 | ||
278 | ret = fts_wd_set_resolution(data, resolution); | |
279 | if (ret < 0) | |
280 | return ret; | |
281 | ||
282 | wdd->timeout = timeout; | |
283 | return 0; | |
284 | } | |
285 | ||
286 | static int fts_wd_start(struct watchdog_device *wdd) | |
287 | { | |
288 | struct fts_data *data = watchdog_get_drvdata(wdd); | |
289 | ||
290 | return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET, | |
291 | wdd->timeout / (u8)data->resolution); | |
292 | } | |
293 | ||
294 | static int fts_wd_stop(struct watchdog_device *wdd) | |
295 | { | |
296 | struct fts_data *data; | |
297 | ||
298 | data = watchdog_get_drvdata(wdd); | |
299 | return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET, 0); | |
300 | } | |
301 | ||
302 | static const struct watchdog_info fts_wd_info = { | |
303 | .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, | |
304 | .identity = "FTS Teutates Hardware Watchdog", | |
305 | }; | |
306 | ||
307 | static const struct watchdog_ops fts_wd_ops = { | |
308 | .owner = THIS_MODULE, | |
309 | .start = fts_wd_start, | |
310 | .stop = fts_wd_stop, | |
311 | .set_timeout = fts_wd_set_timeout, | |
312 | }; | |
313 | ||
314 | static int fts_watchdog_init(struct fts_data *data) | |
315 | { | |
316 | int timeout, ret; | |
317 | ||
318 | watchdog_set_drvdata(&data->wdd, data); | |
319 | ||
320 | timeout = fts_read_byte(data->client, FTS_WATCHDOG_TIME_PRESET); | |
321 | if (timeout < 0) | |
322 | return timeout; | |
323 | ||
324 | /* watchdog not running, set timeout to a default of 60 sec. */ | |
325 | if (timeout == 0) { | |
326 | ret = fts_wd_set_resolution(data, seconds); | |
327 | if (ret < 0) | |
328 | return ret; | |
329 | data->wdd.timeout = 60; | |
330 | } else { | |
331 | ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL); | |
332 | if (ret < 0) | |
333 | return ret; | |
334 | ||
335 | data->resolution = ret & BIT(1) ? seconds : minutes; | |
336 | data->wdd.timeout = timeout * (u8)data->resolution; | |
337 | set_bit(WDOG_HW_RUNNING, &data->wdd.status); | |
338 | } | |
339 | ||
340 | /* Register our watchdog part */ | |
341 | data->wdd.info = &fts_wd_info; | |
342 | data->wdd.ops = &fts_wd_ops; | |
343 | data->wdd.parent = &data->client->dev; | |
344 | data->wdd.min_timeout = 1; | |
345 | ||
346 | /* max timeout 255 minutes. */ | |
347 | data->wdd.max_hw_heartbeat_ms = 0xFF * 60 * MSEC_PER_SEC; | |
348 | ||
349 | return watchdog_register_device(&data->wdd); | |
350 | } | |
351 | ||
352 | /*****************************************************************************/ | |
353 | /* SysFS handler functions */ | |
354 | /*****************************************************************************/ | |
355 | static ssize_t show_in_value(struct device *dev, | |
356 | struct device_attribute *devattr, char *buf) | |
357 | { | |
358 | struct fts_data *data = dev_get_drvdata(dev); | |
359 | int index = to_sensor_dev_attr(devattr)->index; | |
360 | int err; | |
361 | ||
362 | err = fts_update_device(data); | |
363 | if (err < 0) | |
364 | return err; | |
365 | ||
366 | return sprintf(buf, "%u\n", data->volt[index]); | |
367 | } | |
368 | ||
369 | static ssize_t show_temp_value(struct device *dev, | |
370 | struct device_attribute *devattr, char *buf) | |
371 | { | |
372 | struct fts_data *data = dev_get_drvdata(dev); | |
373 | int index = to_sensor_dev_attr(devattr)->index; | |
374 | int err; | |
375 | ||
376 | err = fts_update_device(data); | |
377 | if (err < 0) | |
378 | return err; | |
379 | ||
380 | return sprintf(buf, "%u\n", data->temp_input[index]); | |
381 | } | |
382 | ||
383 | static ssize_t show_temp_fault(struct device *dev, | |
384 | struct device_attribute *devattr, char *buf) | |
385 | { | |
386 | struct fts_data *data = dev_get_drvdata(dev); | |
387 | int index = to_sensor_dev_attr(devattr)->index; | |
388 | int err; | |
389 | ||
390 | err = fts_update_device(data); | |
391 | if (err < 0) | |
392 | return err; | |
393 | ||
394 | /* 00h Temperature = Sensor Error */ | |
395 | return sprintf(buf, "%d\n", data->temp_input[index] == 0); | |
396 | } | |
397 | ||
398 | static ssize_t show_temp_alarm(struct device *dev, | |
399 | struct device_attribute *devattr, char *buf) | |
400 | { | |
401 | struct fts_data *data = dev_get_drvdata(dev); | |
402 | int index = to_sensor_dev_attr(devattr)->index; | |
403 | int err; | |
404 | ||
405 | err = fts_update_device(data); | |
406 | if (err < 0) | |
407 | return err; | |
408 | ||
409 | return sprintf(buf, "%u\n", !!(data->temp_alarm & BIT(index))); | |
410 | } | |
411 | ||
412 | static ssize_t | |
413 | clear_temp_alarm(struct device *dev, struct device_attribute *devattr, | |
414 | const char *buf, size_t count) | |
415 | { | |
416 | struct fts_data *data = dev_get_drvdata(dev); | |
417 | int index = to_sensor_dev_attr(devattr)->index; | |
418 | long ret; | |
419 | ||
420 | ret = fts_update_device(data); | |
421 | if (ret < 0) | |
422 | return ret; | |
423 | ||
424 | if (kstrtoul(buf, 10, &ret) || ret != 0) | |
425 | return -EINVAL; | |
426 | ||
427 | mutex_lock(&data->update_lock); | |
428 | ret = fts_read_byte(data->client, FTS_REG_TEMP_CONTROL(index)); | |
429 | if (ret < 0) | |
430 | goto error; | |
431 | ||
432 | ret = fts_write_byte(data->client, FTS_REG_TEMP_CONTROL(index), | |
433 | ret | 0x1); | |
434 | if (ret < 0) | |
435 | goto error; | |
436 | ||
437 | data->valid = false; | |
438 | error: | |
439 | mutex_unlock(&data->update_lock); | |
440 | return ret; | |
441 | } | |
442 | ||
443 | static ssize_t show_fan_value(struct device *dev, | |
444 | struct device_attribute *devattr, char *buf) | |
445 | { | |
446 | struct fts_data *data = dev_get_drvdata(dev); | |
447 | int index = to_sensor_dev_attr(devattr)->index; | |
448 | int err; | |
449 | ||
450 | err = fts_update_device(data); | |
451 | if (err < 0) | |
452 | return err; | |
453 | ||
454 | return sprintf(buf, "%u\n", data->fan_input[index]); | |
455 | } | |
456 | ||
457 | static ssize_t show_fan_source(struct device *dev, | |
458 | struct device_attribute *devattr, char *buf) | |
459 | { | |
460 | struct fts_data *data = dev_get_drvdata(dev); | |
461 | int index = to_sensor_dev_attr(devattr)->index; | |
462 | int err; | |
463 | ||
464 | err = fts_update_device(data); | |
465 | if (err < 0) | |
466 | return err; | |
467 | ||
468 | return sprintf(buf, "%u\n", data->fan_source[index]); | |
469 | } | |
470 | ||
471 | static ssize_t show_fan_alarm(struct device *dev, | |
472 | struct device_attribute *devattr, char *buf) | |
473 | { | |
474 | struct fts_data *data = dev_get_drvdata(dev); | |
475 | int index = to_sensor_dev_attr(devattr)->index; | |
476 | int err; | |
477 | ||
478 | err = fts_update_device(data); | |
479 | if (err < 0) | |
480 | return err; | |
481 | ||
482 | return sprintf(buf, "%d\n", !!(data->fan_alarm & BIT(index))); | |
483 | } | |
484 | ||
485 | static ssize_t | |
486 | clear_fan_alarm(struct device *dev, struct device_attribute *devattr, | |
487 | const char *buf, size_t count) | |
488 | { | |
489 | struct fts_data *data = dev_get_drvdata(dev); | |
490 | int index = to_sensor_dev_attr(devattr)->index; | |
491 | long ret; | |
492 | ||
493 | ret = fts_update_device(data); | |
494 | if (ret < 0) | |
495 | return ret; | |
496 | ||
497 | if (kstrtoul(buf, 10, &ret) || ret != 0) | |
498 | return -EINVAL; | |
499 | ||
500 | mutex_lock(&data->update_lock); | |
501 | ret = fts_read_byte(data->client, FTS_REG_FAN_CONTROL(index)); | |
502 | if (ret < 0) | |
503 | goto error; | |
504 | ||
505 | ret = fts_write_byte(data->client, FTS_REG_FAN_CONTROL(index), | |
506 | ret | 0x1); | |
507 | if (ret < 0) | |
508 | goto error; | |
509 | ||
510 | data->valid = false; | |
511 | error: | |
512 | mutex_unlock(&data->update_lock); | |
513 | return ret; | |
514 | } | |
515 | ||
516 | /*****************************************************************************/ | |
517 | /* SysFS structs */ | |
518 | /*****************************************************************************/ | |
519 | ||
520 | /* Temprature sensors */ | |
521 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_value, NULL, 0); | |
522 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_value, NULL, 1); | |
523 | static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp_value, NULL, 2); | |
524 | static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp_value, NULL, 3); | |
525 | static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp_value, NULL, 4); | |
526 | static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp_value, NULL, 5); | |
527 | static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp_value, NULL, 6); | |
528 | static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp_value, NULL, 7); | |
529 | static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp_value, NULL, 8); | |
530 | static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp_value, NULL, 9); | |
531 | static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO, show_temp_value, NULL, 10); | |
532 | static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO, show_temp_value, NULL, 11); | |
533 | static SENSOR_DEVICE_ATTR(temp13_input, S_IRUGO, show_temp_value, NULL, 12); | |
534 | static SENSOR_DEVICE_ATTR(temp14_input, S_IRUGO, show_temp_value, NULL, 13); | |
535 | static SENSOR_DEVICE_ATTR(temp15_input, S_IRUGO, show_temp_value, NULL, 14); | |
536 | static SENSOR_DEVICE_ATTR(temp16_input, S_IRUGO, show_temp_value, NULL, 15); | |
537 | ||
538 | static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0); | |
539 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1); | |
540 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2); | |
541 | static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3); | |
542 | static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4); | |
543 | static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5); | |
544 | static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_temp_fault, NULL, 6); | |
545 | static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_temp_fault, NULL, 7); | |
546 | static SENSOR_DEVICE_ATTR(temp9_fault, S_IRUGO, show_temp_fault, NULL, 8); | |
547 | static SENSOR_DEVICE_ATTR(temp10_fault, S_IRUGO, show_temp_fault, NULL, 9); | |
548 | static SENSOR_DEVICE_ATTR(temp11_fault, S_IRUGO, show_temp_fault, NULL, 10); | |
549 | static SENSOR_DEVICE_ATTR(temp12_fault, S_IRUGO, show_temp_fault, NULL, 11); | |
550 | static SENSOR_DEVICE_ATTR(temp13_fault, S_IRUGO, show_temp_fault, NULL, 12); | |
551 | static SENSOR_DEVICE_ATTR(temp14_fault, S_IRUGO, show_temp_fault, NULL, 13); | |
552 | static SENSOR_DEVICE_ATTR(temp15_fault, S_IRUGO, show_temp_fault, NULL, 14); | |
553 | static SENSOR_DEVICE_ATTR(temp16_fault, S_IRUGO, show_temp_fault, NULL, 15); | |
554 | ||
555 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
556 | clear_temp_alarm, 0); | |
557 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
558 | clear_temp_alarm, 1); | |
559 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
560 | clear_temp_alarm, 2); | |
561 | static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
562 | clear_temp_alarm, 3); | |
563 | static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
564 | clear_temp_alarm, 4); | |
565 | static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
566 | clear_temp_alarm, 5); | |
567 | static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
568 | clear_temp_alarm, 6); | |
569 | static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
570 | clear_temp_alarm, 7); | |
571 | static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
572 | clear_temp_alarm, 8); | |
573 | static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
574 | clear_temp_alarm, 9); | |
575 | static SENSOR_DEVICE_ATTR(temp11_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
576 | clear_temp_alarm, 10); | |
577 | static SENSOR_DEVICE_ATTR(temp12_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
578 | clear_temp_alarm, 11); | |
579 | static SENSOR_DEVICE_ATTR(temp13_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
580 | clear_temp_alarm, 12); | |
581 | static SENSOR_DEVICE_ATTR(temp14_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
582 | clear_temp_alarm, 13); | |
583 | static SENSOR_DEVICE_ATTR(temp15_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
584 | clear_temp_alarm, 14); | |
585 | static SENSOR_DEVICE_ATTR(temp16_alarm, S_IRUGO | S_IWUSR, show_temp_alarm, | |
586 | clear_temp_alarm, 15); | |
587 | ||
588 | static struct attribute *fts_temp_attrs[] = { | |
589 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
590 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
591 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
592 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
593 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
594 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
595 | &sensor_dev_attr_temp7_input.dev_attr.attr, | |
596 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
597 | &sensor_dev_attr_temp9_input.dev_attr.attr, | |
598 | &sensor_dev_attr_temp10_input.dev_attr.attr, | |
599 | &sensor_dev_attr_temp11_input.dev_attr.attr, | |
600 | &sensor_dev_attr_temp12_input.dev_attr.attr, | |
601 | &sensor_dev_attr_temp13_input.dev_attr.attr, | |
602 | &sensor_dev_attr_temp14_input.dev_attr.attr, | |
603 | &sensor_dev_attr_temp15_input.dev_attr.attr, | |
604 | &sensor_dev_attr_temp16_input.dev_attr.attr, | |
605 | ||
606 | &sensor_dev_attr_temp1_fault.dev_attr.attr, | |
607 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
608 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
609 | &sensor_dev_attr_temp4_fault.dev_attr.attr, | |
610 | &sensor_dev_attr_temp5_fault.dev_attr.attr, | |
611 | &sensor_dev_attr_temp6_fault.dev_attr.attr, | |
612 | &sensor_dev_attr_temp7_fault.dev_attr.attr, | |
613 | &sensor_dev_attr_temp8_fault.dev_attr.attr, | |
614 | &sensor_dev_attr_temp9_fault.dev_attr.attr, | |
615 | &sensor_dev_attr_temp10_fault.dev_attr.attr, | |
616 | &sensor_dev_attr_temp11_fault.dev_attr.attr, | |
617 | &sensor_dev_attr_temp12_fault.dev_attr.attr, | |
618 | &sensor_dev_attr_temp13_fault.dev_attr.attr, | |
619 | &sensor_dev_attr_temp14_fault.dev_attr.attr, | |
620 | &sensor_dev_attr_temp15_fault.dev_attr.attr, | |
621 | &sensor_dev_attr_temp16_fault.dev_attr.attr, | |
622 | ||
623 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, | |
624 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
625 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
626 | &sensor_dev_attr_temp4_alarm.dev_attr.attr, | |
627 | &sensor_dev_attr_temp5_alarm.dev_attr.attr, | |
628 | &sensor_dev_attr_temp6_alarm.dev_attr.attr, | |
629 | &sensor_dev_attr_temp7_alarm.dev_attr.attr, | |
630 | &sensor_dev_attr_temp8_alarm.dev_attr.attr, | |
631 | &sensor_dev_attr_temp9_alarm.dev_attr.attr, | |
632 | &sensor_dev_attr_temp10_alarm.dev_attr.attr, | |
633 | &sensor_dev_attr_temp11_alarm.dev_attr.attr, | |
634 | &sensor_dev_attr_temp12_alarm.dev_attr.attr, | |
635 | &sensor_dev_attr_temp13_alarm.dev_attr.attr, | |
636 | &sensor_dev_attr_temp14_alarm.dev_attr.attr, | |
637 | &sensor_dev_attr_temp15_alarm.dev_attr.attr, | |
638 | &sensor_dev_attr_temp16_alarm.dev_attr.attr, | |
639 | NULL | |
640 | }; | |
641 | ||
642 | /* Fans */ | |
643 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_value, NULL, 0); | |
644 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_value, NULL, 1); | |
645 | static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan_value, NULL, 2); | |
646 | static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan_value, NULL, 3); | |
647 | static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan_value, NULL, 4); | |
648 | static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan_value, NULL, 5); | |
649 | static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan_value, NULL, 6); | |
650 | static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan_value, NULL, 7); | |
651 | ||
652 | static SENSOR_DEVICE_ATTR(fan1_source, S_IRUGO, show_fan_source, NULL, 0); | |
653 | static SENSOR_DEVICE_ATTR(fan2_source, S_IRUGO, show_fan_source, NULL, 1); | |
654 | static SENSOR_DEVICE_ATTR(fan3_source, S_IRUGO, show_fan_source, NULL, 2); | |
655 | static SENSOR_DEVICE_ATTR(fan4_source, S_IRUGO, show_fan_source, NULL, 3); | |
656 | static SENSOR_DEVICE_ATTR(fan5_source, S_IRUGO, show_fan_source, NULL, 4); | |
657 | static SENSOR_DEVICE_ATTR(fan6_source, S_IRUGO, show_fan_source, NULL, 5); | |
658 | static SENSOR_DEVICE_ATTR(fan7_source, S_IRUGO, show_fan_source, NULL, 6); | |
659 | static SENSOR_DEVICE_ATTR(fan8_source, S_IRUGO, show_fan_source, NULL, 7); | |
660 | ||
661 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO | S_IWUSR, | |
662 | show_fan_alarm, clear_fan_alarm, 0); | |
663 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO | S_IWUSR, | |
664 | show_fan_alarm, clear_fan_alarm, 1); | |
665 | static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO | S_IWUSR, | |
666 | show_fan_alarm, clear_fan_alarm, 2); | |
667 | static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO | S_IWUSR, | |
668 | show_fan_alarm, clear_fan_alarm, 3); | |
669 | static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO | S_IWUSR, | |
670 | show_fan_alarm, clear_fan_alarm, 4); | |
671 | static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO | S_IWUSR, | |
672 | show_fan_alarm, clear_fan_alarm, 5); | |
673 | static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO | S_IWUSR, | |
674 | show_fan_alarm, clear_fan_alarm, 6); | |
675 | static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO | S_IWUSR, | |
676 | show_fan_alarm, clear_fan_alarm, 7); | |
677 | ||
678 | static struct attribute *fts_fan_attrs[] = { | |
679 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
680 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
681 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
682 | &sensor_dev_attr_fan4_input.dev_attr.attr, | |
683 | &sensor_dev_attr_fan5_input.dev_attr.attr, | |
684 | &sensor_dev_attr_fan6_input.dev_attr.attr, | |
685 | &sensor_dev_attr_fan7_input.dev_attr.attr, | |
686 | &sensor_dev_attr_fan8_input.dev_attr.attr, | |
687 | ||
688 | &sensor_dev_attr_fan1_source.dev_attr.attr, | |
689 | &sensor_dev_attr_fan2_source.dev_attr.attr, | |
690 | &sensor_dev_attr_fan3_source.dev_attr.attr, | |
691 | &sensor_dev_attr_fan4_source.dev_attr.attr, | |
692 | &sensor_dev_attr_fan5_source.dev_attr.attr, | |
693 | &sensor_dev_attr_fan6_source.dev_attr.attr, | |
694 | &sensor_dev_attr_fan7_source.dev_attr.attr, | |
695 | &sensor_dev_attr_fan8_source.dev_attr.attr, | |
696 | ||
697 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, | |
698 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
699 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, | |
700 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, | |
701 | &sensor_dev_attr_fan5_alarm.dev_attr.attr, | |
702 | &sensor_dev_attr_fan6_alarm.dev_attr.attr, | |
703 | &sensor_dev_attr_fan7_alarm.dev_attr.attr, | |
704 | &sensor_dev_attr_fan8_alarm.dev_attr.attr, | |
705 | NULL | |
706 | }; | |
707 | ||
708 | /* Voltages */ | |
709 | static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in_value, NULL, 0); | |
710 | static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in_value, NULL, 1); | |
711 | static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in_value, NULL, 2); | |
712 | static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in_value, NULL, 3); | |
713 | static struct attribute *fts_voltage_attrs[] = { | |
714 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
715 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
716 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
717 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
718 | NULL | |
719 | }; | |
720 | ||
721 | static const struct attribute_group fts_voltage_attr_group = { | |
722 | .attrs = fts_voltage_attrs | |
723 | }; | |
724 | ||
725 | static const struct attribute_group fts_temp_attr_group = { | |
726 | .attrs = fts_temp_attrs | |
727 | }; | |
728 | ||
729 | static const struct attribute_group fts_fan_attr_group = { | |
730 | .attrs = fts_fan_attrs | |
731 | }; | |
732 | ||
733 | static const struct attribute_group *fts_attr_groups[] = { | |
734 | &fts_voltage_attr_group, | |
735 | &fts_temp_attr_group, | |
736 | &fts_fan_attr_group, | |
737 | NULL | |
738 | }; | |
739 | ||
740 | /*****************************************************************************/ | |
741 | /* Module initialization / remove functions */ | |
742 | /*****************************************************************************/ | |
2d5aee43 TC |
743 | static int fts_detect(struct i2c_client *client, |
744 | struct i2c_board_info *info) | |
745 | { | |
746 | int val; | |
747 | ||
748 | /* detection works with revsion greater or equal to 0x2b */ | |
749 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_REVISION_REG); | |
750 | if (val < 0x2b) | |
751 | return -ENODEV; | |
752 | ||
753 | /* Device Detect Regs must have 0x17 0x34 and 0x54 */ | |
754 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_1); | |
755 | if (val != 0x17) | |
756 | return -ENODEV; | |
757 | ||
758 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_2); | |
759 | if (val != 0x34) | |
760 | return -ENODEV; | |
761 | ||
762 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_3); | |
763 | if (val != 0x54) | |
764 | return -ENODEV; | |
765 | ||
766 | /* | |
767 | * 0x10 == Baseboard Management Controller, 0x01 == Teutates | |
768 | * Device ID Reg needs to be 0x11 | |
769 | */ | |
770 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_ID_REG); | |
771 | if (val != 0x11) | |
772 | return -ENODEV; | |
773 | ||
774 | strlcpy(info->type, fts_id[0].name, I2C_NAME_SIZE); | |
775 | info->flags = 0; | |
776 | return 0; | |
777 | } | |
778 | ||
08426eda TC |
779 | static int fts_remove(struct i2c_client *client) |
780 | { | |
781 | struct fts_data *data = dev_get_drvdata(&client->dev); | |
782 | ||
783 | watchdog_unregister_device(&data->wdd); | |
784 | return 0; | |
785 | } | |
786 | ||
787 | static int fts_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
788 | { | |
789 | u8 revision; | |
790 | struct fts_data *data; | |
791 | int err; | |
792 | s8 deviceid; | |
793 | struct device *hwmon_dev; | |
794 | ||
795 | if (client->addr != 0x73) | |
796 | return -ENODEV; | |
797 | ||
798 | /* Baseboard Management Controller check */ | |
799 | deviceid = i2c_smbus_read_byte_data(client, FTS_DEVICE_ID_REG); | |
800 | if (deviceid > 0 && (deviceid & 0xF0) == 0x10) { | |
801 | switch (deviceid & 0x0F) { | |
802 | case 0x01: | |
803 | break; | |
804 | default: | |
805 | dev_dbg(&client->dev, | |
806 | "No Baseboard Management Controller\n"); | |
807 | return -ENODEV; | |
808 | } | |
809 | } else { | |
810 | dev_dbg(&client->dev, "No fujitsu board\n"); | |
811 | return -ENODEV; | |
812 | } | |
813 | ||
814 | data = devm_kzalloc(&client->dev, sizeof(struct fts_data), | |
815 | GFP_KERNEL); | |
816 | if (!data) | |
817 | return -ENOMEM; | |
818 | ||
819 | mutex_init(&data->update_lock); | |
820 | mutex_init(&data->access_lock); | |
821 | data->client = client; | |
822 | dev_set_drvdata(&client->dev, data); | |
823 | ||
824 | err = i2c_smbus_read_byte_data(client, FTS_DEVICE_REVISION_REG); | |
825 | if (err < 0) | |
826 | return err; | |
827 | revision = err; | |
828 | ||
829 | hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, | |
830 | "ftsteutates", | |
831 | data, | |
832 | fts_attr_groups); | |
833 | if (IS_ERR(hwmon_dev)) | |
834 | return PTR_ERR(hwmon_dev); | |
835 | ||
836 | err = fts_watchdog_init(data); | |
837 | if (err) | |
838 | return err; | |
839 | ||
840 | dev_info(&client->dev, "Detected FTS Teutates chip, revision: %d.%d\n", | |
841 | (revision & 0xF0) >> 4, revision & 0x0F); | |
842 | return 0; | |
843 | } | |
844 | ||
845 | /*****************************************************************************/ | |
846 | /* Module Details */ | |
847 | /*****************************************************************************/ | |
848 | static struct i2c_driver fts_driver = { | |
2d5aee43 | 849 | .class = I2C_CLASS_HWMON, |
08426eda TC |
850 | .driver = { |
851 | .name = "ftsteutates", | |
852 | }, | |
853 | .id_table = fts_id, | |
854 | .probe = fts_probe, | |
855 | .remove = fts_remove, | |
2d5aee43 TC |
856 | .detect = fts_detect, |
857 | .address_list = normal_i2c, | |
08426eda TC |
858 | }; |
859 | ||
860 | module_i2c_driver(fts_driver); | |
861 | ||
862 | MODULE_AUTHOR("Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com>"); | |
863 | MODULE_DESCRIPTION("FTS Teutates driver"); | |
864 | MODULE_LICENSE("GPL"); |