Commit | Line | Data |
---|---|---|
c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
08426eda TC |
2 | /* |
3 | * Support for the FTS Systemmonitoring Chip "Teutates" | |
4 | * | |
5 | * Copyright (C) 2016 Fujitsu Technology Solutions GmbH, | |
6 | * Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com> | |
08426eda TC |
7 | */ |
8 | #include <linux/err.h> | |
9 | #include <linux/fs.h> | |
10 | #include <linux/hwmon.h> | |
11 | #include <linux/hwmon-sysfs.h> | |
12 | #include <linux/i2c.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/jiffies.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/mutex.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/sysfs.h> | |
19 | #include <linux/uaccess.h> | |
08426eda TC |
20 | #include <linux/watchdog.h> |
21 | ||
22 | #define FTS_DEVICE_ID_REG 0x0000 | |
23 | #define FTS_DEVICE_REVISION_REG 0x0001 | |
24 | #define FTS_DEVICE_STATUS_REG 0x0004 | |
25 | #define FTS_SATELLITE_STATUS_REG 0x0005 | |
26 | #define FTS_EVENT_STATUS_REG 0x0006 | |
27 | #define FTS_GLOBAL_CONTROL_REG 0x0007 | |
28 | ||
2d5aee43 TC |
29 | #define FTS_DEVICE_DETECT_REG_1 0x0C |
30 | #define FTS_DEVICE_DETECT_REG_2 0x0D | |
31 | #define FTS_DEVICE_DETECT_REG_3 0x0E | |
32 | ||
08426eda TC |
33 | #define FTS_SENSOR_EVENT_REG 0x0010 |
34 | ||
35 | #define FTS_FAN_EVENT_REG 0x0014 | |
36 | #define FTS_FAN_PRESENT_REG 0x0015 | |
37 | ||
38 | #define FTS_POWER_ON_TIME_COUNTER_A 0x007A | |
39 | #define FTS_POWER_ON_TIME_COUNTER_B 0x007B | |
40 | #define FTS_POWER_ON_TIME_COUNTER_C 0x007C | |
41 | ||
42 | #define FTS_PAGE_SELECT_REG 0x007F | |
43 | ||
44 | #define FTS_WATCHDOG_TIME_PRESET 0x000B | |
45 | #define FTS_WATCHDOG_CONTROL 0x5081 | |
46 | ||
47 | #define FTS_NO_FAN_SENSORS 0x08 | |
48 | #define FTS_NO_TEMP_SENSORS 0x10 | |
49 | #define FTS_NO_VOLT_SENSORS 0x04 | |
50 | ||
2d5aee43 TC |
51 | static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; |
52 | ||
1dad2e95 | 53 | static const struct i2c_device_id fts_id[] = { |
08426eda TC |
54 | { "ftsteutates", 0 }, |
55 | { } | |
56 | }; | |
57 | MODULE_DEVICE_TABLE(i2c, fts_id); | |
58 | ||
59 | enum WATCHDOG_RESOLUTION { | |
60 | seconds = 1, | |
61 | minutes = 60 | |
62 | }; | |
63 | ||
64 | struct fts_data { | |
65 | struct i2c_client *client; | |
66 | /* update sensor data lock */ | |
67 | struct mutex update_lock; | |
68 | /* read/write register lock */ | |
69 | struct mutex access_lock; | |
70 | unsigned long last_updated; /* in jiffies */ | |
71 | struct watchdog_device wdd; | |
72 | enum WATCHDOG_RESOLUTION resolution; | |
73 | bool valid; /* false until following fields are valid */ | |
74 | ||
75 | u8 volt[FTS_NO_VOLT_SENSORS]; | |
76 | ||
77 | u8 temp_input[FTS_NO_TEMP_SENSORS]; | |
78 | u8 temp_alarm; | |
79 | ||
80 | u8 fan_present; | |
81 | u8 fan_input[FTS_NO_FAN_SENSORS]; /* in rps */ | |
82 | u8 fan_source[FTS_NO_FAN_SENSORS]; | |
83 | u8 fan_alarm; | |
84 | }; | |
85 | ||
86 | #define FTS_REG_FAN_INPUT(idx) ((idx) + 0x20) | |
87 | #define FTS_REG_FAN_SOURCE(idx) ((idx) + 0x30) | |
88 | #define FTS_REG_FAN_CONTROL(idx) (((idx) << 16) + 0x4881) | |
89 | ||
90 | #define FTS_REG_TEMP_INPUT(idx) ((idx) + 0x40) | |
91 | #define FTS_REG_TEMP_CONTROL(idx) (((idx) << 16) + 0x0681) | |
92 | ||
93 | #define FTS_REG_VOLT(idx) ((idx) + 0x18) | |
94 | ||
95 | /*****************************************************************************/ | |
96 | /* I2C Helper functions */ | |
97 | /*****************************************************************************/ | |
98 | static int fts_read_byte(struct i2c_client *client, unsigned short reg) | |
99 | { | |
100 | int ret; | |
101 | unsigned char page = reg >> 8; | |
102 | struct fts_data *data = dev_get_drvdata(&client->dev); | |
103 | ||
104 | mutex_lock(&data->access_lock); | |
105 | ||
106 | dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page); | |
107 | ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page); | |
108 | if (ret < 0) | |
109 | goto error; | |
110 | ||
111 | reg &= 0xFF; | |
112 | ret = i2c_smbus_read_byte_data(client, reg); | |
113 | dev_dbg(&client->dev, "read - reg: 0x%.02x: val: 0x%.02x\n", reg, ret); | |
114 | ||
115 | error: | |
116 | mutex_unlock(&data->access_lock); | |
117 | return ret; | |
118 | } | |
119 | ||
120 | static int fts_write_byte(struct i2c_client *client, unsigned short reg, | |
121 | unsigned char value) | |
122 | { | |
123 | int ret; | |
124 | unsigned char page = reg >> 8; | |
125 | struct fts_data *data = dev_get_drvdata(&client->dev); | |
126 | ||
127 | mutex_lock(&data->access_lock); | |
128 | ||
129 | dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page); | |
130 | ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page); | |
131 | if (ret < 0) | |
132 | goto error; | |
133 | ||
134 | reg &= 0xFF; | |
135 | dev_dbg(&client->dev, | |
136 | "write - reg: 0x%.02x: val: 0x%.02x\n", reg, value); | |
137 | ret = i2c_smbus_write_byte_data(client, reg, value); | |
138 | ||
139 | error: | |
140 | mutex_unlock(&data->access_lock); | |
141 | return ret; | |
142 | } | |
143 | ||
144 | /*****************************************************************************/ | |
145 | /* Data Updater Helper function */ | |
146 | /*****************************************************************************/ | |
147 | static int fts_update_device(struct fts_data *data) | |
148 | { | |
149 | int i; | |
150 | int err = 0; | |
151 | ||
152 | mutex_lock(&data->update_lock); | |
153 | if (!time_after(jiffies, data->last_updated + 2 * HZ) && data->valid) | |
154 | goto exit; | |
155 | ||
156 | err = fts_read_byte(data->client, FTS_DEVICE_STATUS_REG); | |
157 | if (err < 0) | |
158 | goto exit; | |
159 | ||
160 | data->valid = !!(err & 0x02); /* Data not ready yet */ | |
161 | if (unlikely(!data->valid)) { | |
162 | err = -EAGAIN; | |
163 | goto exit; | |
164 | } | |
165 | ||
166 | err = fts_read_byte(data->client, FTS_FAN_PRESENT_REG); | |
167 | if (err < 0) | |
168 | goto exit; | |
169 | data->fan_present = err; | |
170 | ||
171 | err = fts_read_byte(data->client, FTS_FAN_EVENT_REG); | |
172 | if (err < 0) | |
173 | goto exit; | |
174 | data->fan_alarm = err; | |
175 | ||
176 | for (i = 0; i < FTS_NO_FAN_SENSORS; i++) { | |
177 | if (data->fan_present & BIT(i)) { | |
178 | err = fts_read_byte(data->client, FTS_REG_FAN_INPUT(i)); | |
179 | if (err < 0) | |
180 | goto exit; | |
181 | data->fan_input[i] = err; | |
182 | ||
183 | err = fts_read_byte(data->client, | |
184 | FTS_REG_FAN_SOURCE(i)); | |
185 | if (err < 0) | |
186 | goto exit; | |
187 | data->fan_source[i] = err; | |
188 | } else { | |
189 | data->fan_input[i] = 0; | |
190 | data->fan_source[i] = 0; | |
191 | } | |
192 | } | |
193 | ||
194 | err = fts_read_byte(data->client, FTS_SENSOR_EVENT_REG); | |
195 | if (err < 0) | |
196 | goto exit; | |
197 | data->temp_alarm = err; | |
198 | ||
199 | for (i = 0; i < FTS_NO_TEMP_SENSORS; i++) { | |
200 | err = fts_read_byte(data->client, FTS_REG_TEMP_INPUT(i)); | |
201 | if (err < 0) | |
202 | goto exit; | |
203 | data->temp_input[i] = err; | |
204 | } | |
205 | ||
206 | for (i = 0; i < FTS_NO_VOLT_SENSORS; i++) { | |
207 | err = fts_read_byte(data->client, FTS_REG_VOLT(i)); | |
208 | if (err < 0) | |
209 | goto exit; | |
210 | data->volt[i] = err; | |
211 | } | |
212 | data->last_updated = jiffies; | |
213 | err = 0; | |
214 | exit: | |
215 | mutex_unlock(&data->update_lock); | |
216 | return err; | |
217 | } | |
218 | ||
219 | /*****************************************************************************/ | |
220 | /* Watchdog functions */ | |
221 | /*****************************************************************************/ | |
222 | static int fts_wd_set_resolution(struct fts_data *data, | |
223 | enum WATCHDOG_RESOLUTION resolution) | |
224 | { | |
225 | int ret; | |
226 | ||
227 | if (data->resolution == resolution) | |
228 | return 0; | |
229 | ||
230 | ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL); | |
231 | if (ret < 0) | |
232 | return ret; | |
233 | ||
234 | if ((resolution == seconds && ret & BIT(1)) || | |
235 | (resolution == minutes && (ret & BIT(1)) == 0)) { | |
236 | data->resolution = resolution; | |
237 | return 0; | |
238 | } | |
239 | ||
240 | if (resolution == seconds) | |
4c8702b3 | 241 | ret |= BIT(1); |
08426eda TC |
242 | else |
243 | ret &= ~BIT(1); | |
244 | ||
245 | ret = fts_write_byte(data->client, FTS_WATCHDOG_CONTROL, ret); | |
246 | if (ret < 0) | |
247 | return ret; | |
248 | ||
249 | data->resolution = resolution; | |
250 | return ret; | |
251 | } | |
252 | ||
253 | static int fts_wd_set_timeout(struct watchdog_device *wdd, unsigned int timeout) | |
254 | { | |
255 | struct fts_data *data; | |
256 | enum WATCHDOG_RESOLUTION resolution = seconds; | |
257 | int ret; | |
258 | ||
259 | data = watchdog_get_drvdata(wdd); | |
260 | /* switch watchdog resolution to minutes if timeout does not fit | |
261 | * into a byte | |
262 | */ | |
263 | if (timeout > 0xFF) { | |
264 | timeout = DIV_ROUND_UP(timeout, 60) * 60; | |
265 | resolution = minutes; | |
266 | } | |
267 | ||
268 | ret = fts_wd_set_resolution(data, resolution); | |
269 | if (ret < 0) | |
270 | return ret; | |
271 | ||
272 | wdd->timeout = timeout; | |
273 | return 0; | |
274 | } | |
275 | ||
276 | static int fts_wd_start(struct watchdog_device *wdd) | |
277 | { | |
278 | struct fts_data *data = watchdog_get_drvdata(wdd); | |
279 | ||
280 | return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET, | |
281 | wdd->timeout / (u8)data->resolution); | |
282 | } | |
283 | ||
284 | static int fts_wd_stop(struct watchdog_device *wdd) | |
285 | { | |
286 | struct fts_data *data; | |
287 | ||
288 | data = watchdog_get_drvdata(wdd); | |
289 | return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET, 0); | |
290 | } | |
291 | ||
292 | static const struct watchdog_info fts_wd_info = { | |
293 | .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, | |
294 | .identity = "FTS Teutates Hardware Watchdog", | |
295 | }; | |
296 | ||
297 | static const struct watchdog_ops fts_wd_ops = { | |
298 | .owner = THIS_MODULE, | |
299 | .start = fts_wd_start, | |
300 | .stop = fts_wd_stop, | |
301 | .set_timeout = fts_wd_set_timeout, | |
302 | }; | |
303 | ||
304 | static int fts_watchdog_init(struct fts_data *data) | |
305 | { | |
306 | int timeout, ret; | |
307 | ||
308 | watchdog_set_drvdata(&data->wdd, data); | |
309 | ||
310 | timeout = fts_read_byte(data->client, FTS_WATCHDOG_TIME_PRESET); | |
311 | if (timeout < 0) | |
312 | return timeout; | |
313 | ||
314 | /* watchdog not running, set timeout to a default of 60 sec. */ | |
315 | if (timeout == 0) { | |
316 | ret = fts_wd_set_resolution(data, seconds); | |
317 | if (ret < 0) | |
318 | return ret; | |
319 | data->wdd.timeout = 60; | |
320 | } else { | |
321 | ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL); | |
322 | if (ret < 0) | |
323 | return ret; | |
324 | ||
325 | data->resolution = ret & BIT(1) ? seconds : minutes; | |
326 | data->wdd.timeout = timeout * (u8)data->resolution; | |
327 | set_bit(WDOG_HW_RUNNING, &data->wdd.status); | |
328 | } | |
329 | ||
330 | /* Register our watchdog part */ | |
331 | data->wdd.info = &fts_wd_info; | |
332 | data->wdd.ops = &fts_wd_ops; | |
333 | data->wdd.parent = &data->client->dev; | |
334 | data->wdd.min_timeout = 1; | |
335 | ||
336 | /* max timeout 255 minutes. */ | |
337 | data->wdd.max_hw_heartbeat_ms = 0xFF * 60 * MSEC_PER_SEC; | |
338 | ||
339 | return watchdog_register_device(&data->wdd); | |
340 | } | |
341 | ||
342 | /*****************************************************************************/ | |
343 | /* SysFS handler functions */ | |
344 | /*****************************************************************************/ | |
626f5eae | 345 | static ssize_t in_value_show(struct device *dev, |
08426eda TC |
346 | struct device_attribute *devattr, char *buf) |
347 | { | |
348 | struct fts_data *data = dev_get_drvdata(dev); | |
349 | int index = to_sensor_dev_attr(devattr)->index; | |
350 | int err; | |
351 | ||
352 | err = fts_update_device(data); | |
353 | if (err < 0) | |
354 | return err; | |
355 | ||
356 | return sprintf(buf, "%u\n", data->volt[index]); | |
357 | } | |
358 | ||
626f5eae | 359 | static ssize_t temp_value_show(struct device *dev, |
08426eda TC |
360 | struct device_attribute *devattr, char *buf) |
361 | { | |
362 | struct fts_data *data = dev_get_drvdata(dev); | |
363 | int index = to_sensor_dev_attr(devattr)->index; | |
364 | int err; | |
365 | ||
366 | err = fts_update_device(data); | |
367 | if (err < 0) | |
368 | return err; | |
369 | ||
370 | return sprintf(buf, "%u\n", data->temp_input[index]); | |
371 | } | |
372 | ||
626f5eae | 373 | static ssize_t temp_fault_show(struct device *dev, |
08426eda TC |
374 | struct device_attribute *devattr, char *buf) |
375 | { | |
376 | struct fts_data *data = dev_get_drvdata(dev); | |
377 | int index = to_sensor_dev_attr(devattr)->index; | |
378 | int err; | |
379 | ||
380 | err = fts_update_device(data); | |
381 | if (err < 0) | |
382 | return err; | |
383 | ||
384 | /* 00h Temperature = Sensor Error */ | |
385 | return sprintf(buf, "%d\n", data->temp_input[index] == 0); | |
386 | } | |
387 | ||
626f5eae | 388 | static ssize_t temp_alarm_show(struct device *dev, |
08426eda TC |
389 | struct device_attribute *devattr, char *buf) |
390 | { | |
391 | struct fts_data *data = dev_get_drvdata(dev); | |
392 | int index = to_sensor_dev_attr(devattr)->index; | |
393 | int err; | |
394 | ||
395 | err = fts_update_device(data); | |
396 | if (err < 0) | |
397 | return err; | |
398 | ||
399 | return sprintf(buf, "%u\n", !!(data->temp_alarm & BIT(index))); | |
400 | } | |
401 | ||
402 | static ssize_t | |
626f5eae | 403 | temp_alarm_store(struct device *dev, struct device_attribute *devattr, |
08426eda TC |
404 | const char *buf, size_t count) |
405 | { | |
406 | struct fts_data *data = dev_get_drvdata(dev); | |
407 | int index = to_sensor_dev_attr(devattr)->index; | |
408 | long ret; | |
409 | ||
410 | ret = fts_update_device(data); | |
411 | if (ret < 0) | |
412 | return ret; | |
413 | ||
414 | if (kstrtoul(buf, 10, &ret) || ret != 0) | |
415 | return -EINVAL; | |
416 | ||
417 | mutex_lock(&data->update_lock); | |
418 | ret = fts_read_byte(data->client, FTS_REG_TEMP_CONTROL(index)); | |
419 | if (ret < 0) | |
420 | goto error; | |
421 | ||
422 | ret = fts_write_byte(data->client, FTS_REG_TEMP_CONTROL(index), | |
423 | ret | 0x1); | |
424 | if (ret < 0) | |
425 | goto error; | |
426 | ||
427 | data->valid = false; | |
7576750f | 428 | ret = count; |
08426eda TC |
429 | error: |
430 | mutex_unlock(&data->update_lock); | |
431 | return ret; | |
432 | } | |
433 | ||
626f5eae | 434 | static ssize_t fan_value_show(struct device *dev, |
08426eda TC |
435 | struct device_attribute *devattr, char *buf) |
436 | { | |
437 | struct fts_data *data = dev_get_drvdata(dev); | |
438 | int index = to_sensor_dev_attr(devattr)->index; | |
439 | int err; | |
440 | ||
441 | err = fts_update_device(data); | |
442 | if (err < 0) | |
443 | return err; | |
444 | ||
445 | return sprintf(buf, "%u\n", data->fan_input[index]); | |
446 | } | |
447 | ||
626f5eae | 448 | static ssize_t fan_source_show(struct device *dev, |
08426eda TC |
449 | struct device_attribute *devattr, char *buf) |
450 | { | |
451 | struct fts_data *data = dev_get_drvdata(dev); | |
452 | int index = to_sensor_dev_attr(devattr)->index; | |
453 | int err; | |
454 | ||
455 | err = fts_update_device(data); | |
456 | if (err < 0) | |
457 | return err; | |
458 | ||
459 | return sprintf(buf, "%u\n", data->fan_source[index]); | |
460 | } | |
461 | ||
626f5eae | 462 | static ssize_t fan_alarm_show(struct device *dev, |
08426eda TC |
463 | struct device_attribute *devattr, char *buf) |
464 | { | |
465 | struct fts_data *data = dev_get_drvdata(dev); | |
466 | int index = to_sensor_dev_attr(devattr)->index; | |
467 | int err; | |
468 | ||
469 | err = fts_update_device(data); | |
470 | if (err < 0) | |
471 | return err; | |
472 | ||
473 | return sprintf(buf, "%d\n", !!(data->fan_alarm & BIT(index))); | |
474 | } | |
475 | ||
476 | static ssize_t | |
626f5eae | 477 | fan_alarm_store(struct device *dev, struct device_attribute *devattr, |
08426eda TC |
478 | const char *buf, size_t count) |
479 | { | |
480 | struct fts_data *data = dev_get_drvdata(dev); | |
481 | int index = to_sensor_dev_attr(devattr)->index; | |
482 | long ret; | |
483 | ||
484 | ret = fts_update_device(data); | |
485 | if (ret < 0) | |
486 | return ret; | |
487 | ||
488 | if (kstrtoul(buf, 10, &ret) || ret != 0) | |
489 | return -EINVAL; | |
490 | ||
491 | mutex_lock(&data->update_lock); | |
492 | ret = fts_read_byte(data->client, FTS_REG_FAN_CONTROL(index)); | |
493 | if (ret < 0) | |
494 | goto error; | |
495 | ||
496 | ret = fts_write_byte(data->client, FTS_REG_FAN_CONTROL(index), | |
497 | ret | 0x1); | |
498 | if (ret < 0) | |
499 | goto error; | |
500 | ||
501 | data->valid = false; | |
7576750f | 502 | ret = count; |
08426eda TC |
503 | error: |
504 | mutex_unlock(&data->update_lock); | |
505 | return ret; | |
506 | } | |
507 | ||
508 | /*****************************************************************************/ | |
509 | /* SysFS structs */ | |
510 | /*****************************************************************************/ | |
511 | ||
73a76220 | 512 | /* Temperature sensors */ |
626f5eae GR |
513 | static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_value, 0); |
514 | static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_value, 1); | |
515 | static SENSOR_DEVICE_ATTR_RO(temp3_input, temp_value, 2); | |
516 | static SENSOR_DEVICE_ATTR_RO(temp4_input, temp_value, 3); | |
517 | static SENSOR_DEVICE_ATTR_RO(temp5_input, temp_value, 4); | |
518 | static SENSOR_DEVICE_ATTR_RO(temp6_input, temp_value, 5); | |
519 | static SENSOR_DEVICE_ATTR_RO(temp7_input, temp_value, 6); | |
520 | static SENSOR_DEVICE_ATTR_RO(temp8_input, temp_value, 7); | |
521 | static SENSOR_DEVICE_ATTR_RO(temp9_input, temp_value, 8); | |
522 | static SENSOR_DEVICE_ATTR_RO(temp10_input, temp_value, 9); | |
523 | static SENSOR_DEVICE_ATTR_RO(temp11_input, temp_value, 10); | |
524 | static SENSOR_DEVICE_ATTR_RO(temp12_input, temp_value, 11); | |
525 | static SENSOR_DEVICE_ATTR_RO(temp13_input, temp_value, 12); | |
526 | static SENSOR_DEVICE_ATTR_RO(temp14_input, temp_value, 13); | |
527 | static SENSOR_DEVICE_ATTR_RO(temp15_input, temp_value, 14); | |
528 | static SENSOR_DEVICE_ATTR_RO(temp16_input, temp_value, 15); | |
529 | ||
530 | static SENSOR_DEVICE_ATTR_RO(temp1_fault, temp_fault, 0); | |
531 | static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp_fault, 1); | |
532 | static SENSOR_DEVICE_ATTR_RO(temp3_fault, temp_fault, 2); | |
533 | static SENSOR_DEVICE_ATTR_RO(temp4_fault, temp_fault, 3); | |
534 | static SENSOR_DEVICE_ATTR_RO(temp5_fault, temp_fault, 4); | |
535 | static SENSOR_DEVICE_ATTR_RO(temp6_fault, temp_fault, 5); | |
536 | static SENSOR_DEVICE_ATTR_RO(temp7_fault, temp_fault, 6); | |
537 | static SENSOR_DEVICE_ATTR_RO(temp8_fault, temp_fault, 7); | |
538 | static SENSOR_DEVICE_ATTR_RO(temp9_fault, temp_fault, 8); | |
539 | static SENSOR_DEVICE_ATTR_RO(temp10_fault, temp_fault, 9); | |
540 | static SENSOR_DEVICE_ATTR_RO(temp11_fault, temp_fault, 10); | |
541 | static SENSOR_DEVICE_ATTR_RO(temp12_fault, temp_fault, 11); | |
542 | static SENSOR_DEVICE_ATTR_RO(temp13_fault, temp_fault, 12); | |
543 | static SENSOR_DEVICE_ATTR_RO(temp14_fault, temp_fault, 13); | |
544 | static SENSOR_DEVICE_ATTR_RO(temp15_fault, temp_fault, 14); | |
545 | static SENSOR_DEVICE_ATTR_RO(temp16_fault, temp_fault, 15); | |
546 | ||
547 | static SENSOR_DEVICE_ATTR_RW(temp1_alarm, temp_alarm, 0); | |
548 | static SENSOR_DEVICE_ATTR_RW(temp2_alarm, temp_alarm, 1); | |
549 | static SENSOR_DEVICE_ATTR_RW(temp3_alarm, temp_alarm, 2); | |
550 | static SENSOR_DEVICE_ATTR_RW(temp4_alarm, temp_alarm, 3); | |
551 | static SENSOR_DEVICE_ATTR_RW(temp5_alarm, temp_alarm, 4); | |
552 | static SENSOR_DEVICE_ATTR_RW(temp6_alarm, temp_alarm, 5); | |
553 | static SENSOR_DEVICE_ATTR_RW(temp7_alarm, temp_alarm, 6); | |
554 | static SENSOR_DEVICE_ATTR_RW(temp8_alarm, temp_alarm, 7); | |
555 | static SENSOR_DEVICE_ATTR_RW(temp9_alarm, temp_alarm, 8); | |
556 | static SENSOR_DEVICE_ATTR_RW(temp10_alarm, temp_alarm, 9); | |
557 | static SENSOR_DEVICE_ATTR_RW(temp11_alarm, temp_alarm, 10); | |
558 | static SENSOR_DEVICE_ATTR_RW(temp12_alarm, temp_alarm, 11); | |
559 | static SENSOR_DEVICE_ATTR_RW(temp13_alarm, temp_alarm, 12); | |
560 | static SENSOR_DEVICE_ATTR_RW(temp14_alarm, temp_alarm, 13); | |
561 | static SENSOR_DEVICE_ATTR_RW(temp15_alarm, temp_alarm, 14); | |
562 | static SENSOR_DEVICE_ATTR_RW(temp16_alarm, temp_alarm, 15); | |
08426eda TC |
563 | |
564 | static struct attribute *fts_temp_attrs[] = { | |
565 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
566 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
567 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
568 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
569 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
570 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
571 | &sensor_dev_attr_temp7_input.dev_attr.attr, | |
572 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
573 | &sensor_dev_attr_temp9_input.dev_attr.attr, | |
574 | &sensor_dev_attr_temp10_input.dev_attr.attr, | |
575 | &sensor_dev_attr_temp11_input.dev_attr.attr, | |
576 | &sensor_dev_attr_temp12_input.dev_attr.attr, | |
577 | &sensor_dev_attr_temp13_input.dev_attr.attr, | |
578 | &sensor_dev_attr_temp14_input.dev_attr.attr, | |
579 | &sensor_dev_attr_temp15_input.dev_attr.attr, | |
580 | &sensor_dev_attr_temp16_input.dev_attr.attr, | |
581 | ||
582 | &sensor_dev_attr_temp1_fault.dev_attr.attr, | |
583 | &sensor_dev_attr_temp2_fault.dev_attr.attr, | |
584 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
585 | &sensor_dev_attr_temp4_fault.dev_attr.attr, | |
586 | &sensor_dev_attr_temp5_fault.dev_attr.attr, | |
587 | &sensor_dev_attr_temp6_fault.dev_attr.attr, | |
588 | &sensor_dev_attr_temp7_fault.dev_attr.attr, | |
589 | &sensor_dev_attr_temp8_fault.dev_attr.attr, | |
590 | &sensor_dev_attr_temp9_fault.dev_attr.attr, | |
591 | &sensor_dev_attr_temp10_fault.dev_attr.attr, | |
592 | &sensor_dev_attr_temp11_fault.dev_attr.attr, | |
593 | &sensor_dev_attr_temp12_fault.dev_attr.attr, | |
594 | &sensor_dev_attr_temp13_fault.dev_attr.attr, | |
595 | &sensor_dev_attr_temp14_fault.dev_attr.attr, | |
596 | &sensor_dev_attr_temp15_fault.dev_attr.attr, | |
597 | &sensor_dev_attr_temp16_fault.dev_attr.attr, | |
598 | ||
599 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, | |
600 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
601 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
602 | &sensor_dev_attr_temp4_alarm.dev_attr.attr, | |
603 | &sensor_dev_attr_temp5_alarm.dev_attr.attr, | |
604 | &sensor_dev_attr_temp6_alarm.dev_attr.attr, | |
605 | &sensor_dev_attr_temp7_alarm.dev_attr.attr, | |
606 | &sensor_dev_attr_temp8_alarm.dev_attr.attr, | |
607 | &sensor_dev_attr_temp9_alarm.dev_attr.attr, | |
608 | &sensor_dev_attr_temp10_alarm.dev_attr.attr, | |
609 | &sensor_dev_attr_temp11_alarm.dev_attr.attr, | |
610 | &sensor_dev_attr_temp12_alarm.dev_attr.attr, | |
611 | &sensor_dev_attr_temp13_alarm.dev_attr.attr, | |
612 | &sensor_dev_attr_temp14_alarm.dev_attr.attr, | |
613 | &sensor_dev_attr_temp15_alarm.dev_attr.attr, | |
614 | &sensor_dev_attr_temp16_alarm.dev_attr.attr, | |
615 | NULL | |
616 | }; | |
617 | ||
618 | /* Fans */ | |
626f5eae GR |
619 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_value, 0); |
620 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_value, 1); | |
621 | static SENSOR_DEVICE_ATTR_RO(fan3_input, fan_value, 2); | |
622 | static SENSOR_DEVICE_ATTR_RO(fan4_input, fan_value, 3); | |
623 | static SENSOR_DEVICE_ATTR_RO(fan5_input, fan_value, 4); | |
624 | static SENSOR_DEVICE_ATTR_RO(fan6_input, fan_value, 5); | |
625 | static SENSOR_DEVICE_ATTR_RO(fan7_input, fan_value, 6); | |
626 | static SENSOR_DEVICE_ATTR_RO(fan8_input, fan_value, 7); | |
627 | ||
628 | static SENSOR_DEVICE_ATTR_RO(fan1_source, fan_source, 0); | |
629 | static SENSOR_DEVICE_ATTR_RO(fan2_source, fan_source, 1); | |
630 | static SENSOR_DEVICE_ATTR_RO(fan3_source, fan_source, 2); | |
631 | static SENSOR_DEVICE_ATTR_RO(fan4_source, fan_source, 3); | |
632 | static SENSOR_DEVICE_ATTR_RO(fan5_source, fan_source, 4); | |
633 | static SENSOR_DEVICE_ATTR_RO(fan6_source, fan_source, 5); | |
634 | static SENSOR_DEVICE_ATTR_RO(fan7_source, fan_source, 6); | |
635 | static SENSOR_DEVICE_ATTR_RO(fan8_source, fan_source, 7); | |
636 | ||
637 | static SENSOR_DEVICE_ATTR_RW(fan1_alarm, fan_alarm, 0); | |
638 | static SENSOR_DEVICE_ATTR_RW(fan2_alarm, fan_alarm, 1); | |
639 | static SENSOR_DEVICE_ATTR_RW(fan3_alarm, fan_alarm, 2); | |
640 | static SENSOR_DEVICE_ATTR_RW(fan4_alarm, fan_alarm, 3); | |
641 | static SENSOR_DEVICE_ATTR_RW(fan5_alarm, fan_alarm, 4); | |
642 | static SENSOR_DEVICE_ATTR_RW(fan6_alarm, fan_alarm, 5); | |
643 | static SENSOR_DEVICE_ATTR_RW(fan7_alarm, fan_alarm, 6); | |
644 | static SENSOR_DEVICE_ATTR_RW(fan8_alarm, fan_alarm, 7); | |
08426eda TC |
645 | |
646 | static struct attribute *fts_fan_attrs[] = { | |
647 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
648 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
649 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
650 | &sensor_dev_attr_fan4_input.dev_attr.attr, | |
651 | &sensor_dev_attr_fan5_input.dev_attr.attr, | |
652 | &sensor_dev_attr_fan6_input.dev_attr.attr, | |
653 | &sensor_dev_attr_fan7_input.dev_attr.attr, | |
654 | &sensor_dev_attr_fan8_input.dev_attr.attr, | |
655 | ||
656 | &sensor_dev_attr_fan1_source.dev_attr.attr, | |
657 | &sensor_dev_attr_fan2_source.dev_attr.attr, | |
658 | &sensor_dev_attr_fan3_source.dev_attr.attr, | |
659 | &sensor_dev_attr_fan4_source.dev_attr.attr, | |
660 | &sensor_dev_attr_fan5_source.dev_attr.attr, | |
661 | &sensor_dev_attr_fan6_source.dev_attr.attr, | |
662 | &sensor_dev_attr_fan7_source.dev_attr.attr, | |
663 | &sensor_dev_attr_fan8_source.dev_attr.attr, | |
664 | ||
665 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, | |
666 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
667 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, | |
668 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, | |
669 | &sensor_dev_attr_fan5_alarm.dev_attr.attr, | |
670 | &sensor_dev_attr_fan6_alarm.dev_attr.attr, | |
671 | &sensor_dev_attr_fan7_alarm.dev_attr.attr, | |
672 | &sensor_dev_attr_fan8_alarm.dev_attr.attr, | |
673 | NULL | |
674 | }; | |
675 | ||
676 | /* Voltages */ | |
626f5eae GR |
677 | static SENSOR_DEVICE_ATTR_RO(in1_input, in_value, 0); |
678 | static SENSOR_DEVICE_ATTR_RO(in2_input, in_value, 1); | |
679 | static SENSOR_DEVICE_ATTR_RO(in3_input, in_value, 2); | |
680 | static SENSOR_DEVICE_ATTR_RO(in4_input, in_value, 3); | |
08426eda TC |
681 | static struct attribute *fts_voltage_attrs[] = { |
682 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
683 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
684 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
685 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
686 | NULL | |
687 | }; | |
688 | ||
689 | static const struct attribute_group fts_voltage_attr_group = { | |
690 | .attrs = fts_voltage_attrs | |
691 | }; | |
692 | ||
693 | static const struct attribute_group fts_temp_attr_group = { | |
694 | .attrs = fts_temp_attrs | |
695 | }; | |
696 | ||
697 | static const struct attribute_group fts_fan_attr_group = { | |
698 | .attrs = fts_fan_attrs | |
699 | }; | |
700 | ||
701 | static const struct attribute_group *fts_attr_groups[] = { | |
702 | &fts_voltage_attr_group, | |
703 | &fts_temp_attr_group, | |
704 | &fts_fan_attr_group, | |
705 | NULL | |
706 | }; | |
707 | ||
708 | /*****************************************************************************/ | |
709 | /* Module initialization / remove functions */ | |
710 | /*****************************************************************************/ | |
2d5aee43 TC |
711 | static int fts_detect(struct i2c_client *client, |
712 | struct i2c_board_info *info) | |
713 | { | |
714 | int val; | |
715 | ||
23bc3caf | 716 | /* detection works with revision greater or equal to 0x2b */ |
2d5aee43 TC |
717 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_REVISION_REG); |
718 | if (val < 0x2b) | |
719 | return -ENODEV; | |
720 | ||
721 | /* Device Detect Regs must have 0x17 0x34 and 0x54 */ | |
722 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_1); | |
723 | if (val != 0x17) | |
724 | return -ENODEV; | |
725 | ||
726 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_2); | |
727 | if (val != 0x34) | |
728 | return -ENODEV; | |
729 | ||
730 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_3); | |
731 | if (val != 0x54) | |
732 | return -ENODEV; | |
733 | ||
734 | /* | |
735 | * 0x10 == Baseboard Management Controller, 0x01 == Teutates | |
736 | * Device ID Reg needs to be 0x11 | |
737 | */ | |
738 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_ID_REG); | |
739 | if (val != 0x11) | |
740 | return -ENODEV; | |
741 | ||
f2f394db | 742 | strscpy(info->type, fts_id[0].name, I2C_NAME_SIZE); |
2d5aee43 TC |
743 | info->flags = 0; |
744 | return 0; | |
745 | } | |
746 | ||
ed5c2f5f | 747 | static void fts_remove(struct i2c_client *client) |
08426eda TC |
748 | { |
749 | struct fts_data *data = dev_get_drvdata(&client->dev); | |
750 | ||
751 | watchdog_unregister_device(&data->wdd); | |
08426eda TC |
752 | } |
753 | ||
67487038 | 754 | static int fts_probe(struct i2c_client *client) |
08426eda TC |
755 | { |
756 | u8 revision; | |
757 | struct fts_data *data; | |
758 | int err; | |
759 | s8 deviceid; | |
760 | struct device *hwmon_dev; | |
761 | ||
762 | if (client->addr != 0x73) | |
763 | return -ENODEV; | |
764 | ||
765 | /* Baseboard Management Controller check */ | |
766 | deviceid = i2c_smbus_read_byte_data(client, FTS_DEVICE_ID_REG); | |
767 | if (deviceid > 0 && (deviceid & 0xF0) == 0x10) { | |
768 | switch (deviceid & 0x0F) { | |
769 | case 0x01: | |
770 | break; | |
771 | default: | |
772 | dev_dbg(&client->dev, | |
773 | "No Baseboard Management Controller\n"); | |
774 | return -ENODEV; | |
775 | } | |
776 | } else { | |
777 | dev_dbg(&client->dev, "No fujitsu board\n"); | |
778 | return -ENODEV; | |
779 | } | |
780 | ||
781 | data = devm_kzalloc(&client->dev, sizeof(struct fts_data), | |
782 | GFP_KERNEL); | |
783 | if (!data) | |
784 | return -ENOMEM; | |
785 | ||
786 | mutex_init(&data->update_lock); | |
787 | mutex_init(&data->access_lock); | |
788 | data->client = client; | |
789 | dev_set_drvdata(&client->dev, data); | |
790 | ||
791 | err = i2c_smbus_read_byte_data(client, FTS_DEVICE_REVISION_REG); | |
792 | if (err < 0) | |
793 | return err; | |
794 | revision = err; | |
795 | ||
796 | hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, | |
797 | "ftsteutates", | |
798 | data, | |
799 | fts_attr_groups); | |
800 | if (IS_ERR(hwmon_dev)) | |
801 | return PTR_ERR(hwmon_dev); | |
802 | ||
803 | err = fts_watchdog_init(data); | |
804 | if (err) | |
805 | return err; | |
806 | ||
807 | dev_info(&client->dev, "Detected FTS Teutates chip, revision: %d.%d\n", | |
808 | (revision & 0xF0) >> 4, revision & 0x0F); | |
809 | return 0; | |
810 | } | |
811 | ||
812 | /*****************************************************************************/ | |
813 | /* Module Details */ | |
814 | /*****************************************************************************/ | |
815 | static struct i2c_driver fts_driver = { | |
2d5aee43 | 816 | .class = I2C_CLASS_HWMON, |
08426eda TC |
817 | .driver = { |
818 | .name = "ftsteutates", | |
819 | }, | |
820 | .id_table = fts_id, | |
67487038 | 821 | .probe_new = fts_probe, |
08426eda | 822 | .remove = fts_remove, |
2d5aee43 TC |
823 | .detect = fts_detect, |
824 | .address_list = normal_i2c, | |
08426eda TC |
825 | }; |
826 | ||
827 | module_i2c_driver(fts_driver); | |
828 | ||
829 | MODULE_AUTHOR("Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com>"); | |
830 | MODULE_DESCRIPTION("FTS Teutates driver"); | |
831 | MODULE_LICENSE("GPL"); |