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2c03d07a LT |
1 | /* |
2 | * Copyright (C) 2007-2009 Luca Tettamanti <kronos.it@gmail.com> | |
3 | * | |
4 | * This file is released under the GPLv2 | |
5 | * See COPYING in the top level directory of the kernel tree. | |
6 | */ | |
7 | ||
8 | #include <linux/kernel.h> | |
9 | #include <linux/hwmon.h> | |
10 | #include <linux/list.h> | |
11 | #include <linux/module.h> | |
12 | ||
13 | #include <acpi/acpi.h> | |
14 | #include <acpi/acpixf.h> | |
15 | #include <acpi/acpi_drivers.h> | |
16 | #include <acpi/acpi_bus.h> | |
17 | ||
18 | ||
19 | #define ATK_HID "ATK0110" | |
20 | ||
21 | /* Minimum time between readings, enforced in order to avoid | |
22 | * hogging the CPU. | |
23 | */ | |
24 | #define CACHE_TIME HZ | |
25 | ||
26 | #define BOARD_ID "MBIF" | |
27 | #define METHOD_ENUMERATE "GGRP" | |
28 | #define METHOD_READ "GITM" | |
29 | #define METHOD_WRITE "SITM" | |
30 | #define METHOD_OLD_READ_TMP "RTMP" | |
31 | #define METHOD_OLD_READ_VLT "RVLT" | |
32 | #define METHOD_OLD_READ_FAN "RFAN" | |
33 | #define METHOD_OLD_ENUM_TMP "TSIF" | |
34 | #define METHOD_OLD_ENUM_VLT "VSIF" | |
35 | #define METHOD_OLD_ENUM_FAN "FSIF" | |
36 | ||
37 | #define ATK_MUX_HWMON 0x00000006ULL | |
9e6eba61 | 38 | #define ATK_MUX_MGMT 0x00000011ULL |
2c03d07a LT |
39 | |
40 | #define ATK_CLASS_MASK 0xff000000ULL | |
41 | #define ATK_CLASS_FREQ_CTL 0x03000000ULL | |
42 | #define ATK_CLASS_FAN_CTL 0x04000000ULL | |
43 | #define ATK_CLASS_HWMON 0x06000000ULL | |
9e6eba61 | 44 | #define ATK_CLASS_MGMT 0x11000000ULL |
2c03d07a LT |
45 | |
46 | #define ATK_TYPE_MASK 0x00ff0000ULL | |
47 | #define HWMON_TYPE_VOLT 0x00020000ULL | |
48 | #define HWMON_TYPE_TEMP 0x00030000ULL | |
49 | #define HWMON_TYPE_FAN 0x00040000ULL | |
50 | ||
9e6eba61 LT |
51 | #define ATK_ELEMENT_ID_MASK 0x0000ffffULL |
52 | ||
53 | #define ATK_EC_ID 0x11060004ULL | |
2c03d07a LT |
54 | |
55 | enum atk_pack_member { | |
56 | HWMON_PACK_FLAGS, | |
57 | HWMON_PACK_NAME, | |
58 | HWMON_PACK_LIMIT1, | |
59 | HWMON_PACK_LIMIT2, | |
60 | HWMON_PACK_ENABLE | |
61 | }; | |
62 | ||
63 | /* New package format */ | |
64 | #define _HWMON_NEW_PACK_SIZE 7 | |
65 | #define _HWMON_NEW_PACK_FLAGS 0 | |
66 | #define _HWMON_NEW_PACK_NAME 1 | |
67 | #define _HWMON_NEW_PACK_UNK1 2 | |
68 | #define _HWMON_NEW_PACK_UNK2 3 | |
69 | #define _HWMON_NEW_PACK_LIMIT1 4 | |
70 | #define _HWMON_NEW_PACK_LIMIT2 5 | |
71 | #define _HWMON_NEW_PACK_ENABLE 6 | |
72 | ||
73 | /* Old package format */ | |
74 | #define _HWMON_OLD_PACK_SIZE 5 | |
75 | #define _HWMON_OLD_PACK_FLAGS 0 | |
76 | #define _HWMON_OLD_PACK_NAME 1 | |
77 | #define _HWMON_OLD_PACK_LIMIT1 2 | |
78 | #define _HWMON_OLD_PACK_LIMIT2 3 | |
79 | #define _HWMON_OLD_PACK_ENABLE 4 | |
80 | ||
81 | ||
82 | struct atk_data { | |
83 | struct device *hwmon_dev; | |
84 | acpi_handle atk_handle; | |
85 | struct acpi_device *acpi_dev; | |
86 | ||
87 | bool old_interface; | |
88 | ||
89 | /* old interface */ | |
90 | acpi_handle rtmp_handle; | |
91 | acpi_handle rvlt_handle; | |
92 | acpi_handle rfan_handle; | |
93 | /* new inteface */ | |
94 | acpi_handle enumerate_handle; | |
95 | acpi_handle read_handle; | |
9e6eba61 LT |
96 | acpi_handle write_handle; |
97 | ||
98 | bool disable_ec; | |
2c03d07a LT |
99 | |
100 | int voltage_count; | |
101 | int temperature_count; | |
102 | int fan_count; | |
103 | struct list_head sensor_list; | |
104 | }; | |
105 | ||
106 | ||
107 | typedef ssize_t (*sysfs_show_func)(struct device *dev, | |
108 | struct device_attribute *attr, char *buf); | |
109 | ||
110 | static const struct acpi_device_id atk_ids[] = { | |
111 | {ATK_HID, 0}, | |
112 | {"", 0}, | |
113 | }; | |
114 | MODULE_DEVICE_TABLE(acpi, atk_ids); | |
115 | ||
116 | #define ATTR_NAME_SIZE 16 /* Worst case is "tempN_input" */ | |
117 | ||
118 | struct atk_sensor_data { | |
119 | struct list_head list; | |
120 | struct atk_data *data; | |
121 | struct device_attribute label_attr; | |
122 | struct device_attribute input_attr; | |
123 | struct device_attribute limit1_attr; | |
124 | struct device_attribute limit2_attr; | |
125 | char label_attr_name[ATTR_NAME_SIZE]; | |
126 | char input_attr_name[ATTR_NAME_SIZE]; | |
127 | char limit1_attr_name[ATTR_NAME_SIZE]; | |
128 | char limit2_attr_name[ATTR_NAME_SIZE]; | |
129 | u64 id; | |
130 | u64 type; | |
131 | u64 limit1; | |
132 | u64 limit2; | |
133 | u64 cached_value; | |
134 | unsigned long last_updated; /* in jiffies */ | |
135 | bool is_valid; | |
136 | char const *acpi_name; | |
137 | }; | |
138 | ||
18e25555 LT |
139 | /* Return buffer format: |
140 | * [0-3] "value" is valid flag | |
141 | * [4-7] value | |
142 | * [8- ] unknown stuff on newer mobos | |
143 | */ | |
144 | struct atk_acpi_ret_buffer { | |
145 | u32 flags; | |
146 | u32 value; | |
147 | u8 data[]; | |
148 | }; | |
149 | ||
150 | /* Input buffer used for GITM and SITM methods */ | |
151 | struct atk_acpi_input_buf { | |
152 | u32 id; | |
153 | u32 param1; | |
154 | u32 param2; | |
2c03d07a LT |
155 | }; |
156 | ||
157 | static int atk_add(struct acpi_device *device); | |
158 | static int atk_remove(struct acpi_device *device, int type); | |
159 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj); | |
160 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value); | |
161 | static void atk_free_sensors(struct atk_data *data); | |
162 | ||
163 | static struct acpi_driver atk_driver = { | |
164 | .name = ATK_HID, | |
165 | .class = "hwmon", | |
166 | .ids = atk_ids, | |
167 | .ops = { | |
168 | .add = atk_add, | |
169 | .remove = atk_remove, | |
170 | }, | |
171 | }; | |
172 | ||
173 | #define input_to_atk_sensor(attr) \ | |
174 | container_of(attr, struct atk_sensor_data, input_attr) | |
175 | ||
176 | #define label_to_atk_sensor(attr) \ | |
177 | container_of(attr, struct atk_sensor_data, label_attr) | |
178 | ||
179 | #define limit1_to_atk_sensor(attr) \ | |
180 | container_of(attr, struct atk_sensor_data, limit1_attr) | |
181 | ||
182 | #define limit2_to_atk_sensor(attr) \ | |
183 | container_of(attr, struct atk_sensor_data, limit2_attr) | |
184 | ||
185 | static ssize_t atk_input_show(struct device *dev, | |
186 | struct device_attribute *attr, char *buf) | |
187 | { | |
188 | struct atk_sensor_data *s = input_to_atk_sensor(attr); | |
189 | u64 value; | |
190 | int err; | |
191 | ||
192 | err = atk_read_value(s, &value); | |
193 | if (err) | |
194 | return err; | |
195 | ||
196 | if (s->type == HWMON_TYPE_TEMP) | |
197 | /* ACPI returns decidegree */ | |
198 | value *= 100; | |
199 | ||
200 | return sprintf(buf, "%llu\n", value); | |
201 | } | |
202 | ||
203 | static ssize_t atk_label_show(struct device *dev, | |
204 | struct device_attribute *attr, char *buf) | |
205 | { | |
206 | struct atk_sensor_data *s = label_to_atk_sensor(attr); | |
207 | ||
208 | return sprintf(buf, "%s\n", s->acpi_name); | |
209 | } | |
210 | ||
211 | static ssize_t atk_limit1_show(struct device *dev, | |
212 | struct device_attribute *attr, char *buf) | |
213 | { | |
214 | struct atk_sensor_data *s = limit1_to_atk_sensor(attr); | |
215 | u64 value = s->limit1; | |
216 | ||
217 | if (s->type == HWMON_TYPE_TEMP) | |
218 | value *= 100; | |
219 | ||
220 | return sprintf(buf, "%lld\n", value); | |
221 | } | |
222 | ||
223 | static ssize_t atk_limit2_show(struct device *dev, | |
224 | struct device_attribute *attr, char *buf) | |
225 | { | |
226 | struct atk_sensor_data *s = limit2_to_atk_sensor(attr); | |
227 | u64 value = s->limit2; | |
228 | ||
229 | if (s->type == HWMON_TYPE_TEMP) | |
230 | value *= 100; | |
231 | ||
232 | return sprintf(buf, "%lld\n", value); | |
233 | } | |
234 | ||
235 | static ssize_t atk_name_show(struct device *dev, | |
236 | struct device_attribute *attr, char *buf) | |
237 | { | |
238 | return sprintf(buf, "atk0110\n"); | |
239 | } | |
240 | static struct device_attribute atk_name_attr = | |
241 | __ATTR(name, 0444, atk_name_show, NULL); | |
242 | ||
243 | static void atk_init_attribute(struct device_attribute *attr, char *name, | |
244 | sysfs_show_func show) | |
245 | { | |
246 | attr->attr.name = name; | |
247 | attr->attr.mode = 0444; | |
248 | attr->show = show; | |
249 | attr->store = NULL; | |
250 | } | |
251 | ||
252 | ||
253 | static union acpi_object *atk_get_pack_member(struct atk_data *data, | |
254 | union acpi_object *pack, | |
255 | enum atk_pack_member m) | |
256 | { | |
257 | bool old_if = data->old_interface; | |
258 | int offset; | |
259 | ||
260 | switch (m) { | |
261 | case HWMON_PACK_FLAGS: | |
262 | offset = old_if ? _HWMON_OLD_PACK_FLAGS : _HWMON_NEW_PACK_FLAGS; | |
263 | break; | |
264 | case HWMON_PACK_NAME: | |
265 | offset = old_if ? _HWMON_OLD_PACK_NAME : _HWMON_NEW_PACK_NAME; | |
266 | break; | |
267 | case HWMON_PACK_LIMIT1: | |
268 | offset = old_if ? _HWMON_OLD_PACK_LIMIT1 : | |
269 | _HWMON_NEW_PACK_LIMIT1; | |
270 | break; | |
271 | case HWMON_PACK_LIMIT2: | |
272 | offset = old_if ? _HWMON_OLD_PACK_LIMIT2 : | |
273 | _HWMON_NEW_PACK_LIMIT2; | |
274 | break; | |
275 | case HWMON_PACK_ENABLE: | |
276 | offset = old_if ? _HWMON_OLD_PACK_ENABLE : | |
277 | _HWMON_NEW_PACK_ENABLE; | |
278 | break; | |
279 | default: | |
280 | return NULL; | |
281 | } | |
282 | ||
283 | return &pack->package.elements[offset]; | |
284 | } | |
285 | ||
286 | ||
287 | /* New package format is: | |
288 | * - flag (int) | |
289 | * class - used for de-muxing the request to the correct GITn | |
290 | * type (volt, temp, fan) | |
291 | * sensor id | | |
292 | * sensor id - used for de-muxing the request _inside_ the GITn | |
293 | * - name (str) | |
294 | * - unknown (int) | |
295 | * - unknown (int) | |
296 | * - limit1 (int) | |
297 | * - limit2 (int) | |
298 | * - enable (int) | |
299 | * | |
300 | * The old package has the same format but it's missing the two unknown fields. | |
301 | */ | |
302 | static int validate_hwmon_pack(struct atk_data *data, union acpi_object *obj) | |
303 | { | |
304 | struct device *dev = &data->acpi_dev->dev; | |
305 | union acpi_object *tmp; | |
306 | bool old_if = data->old_interface; | |
307 | int const expected_size = old_if ? _HWMON_OLD_PACK_SIZE : | |
308 | _HWMON_NEW_PACK_SIZE; | |
309 | ||
310 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
311 | dev_warn(dev, "Invalid type: %d\n", obj->type); | |
312 | return -EINVAL; | |
313 | } | |
314 | ||
315 | if (obj->package.count != expected_size) { | |
316 | dev_warn(dev, "Invalid package size: %d, expected: %d\n", | |
317 | obj->package.count, expected_size); | |
318 | return -EINVAL; | |
319 | } | |
320 | ||
321 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
322 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
323 | dev_warn(dev, "Invalid type (flag): %d\n", tmp->type); | |
324 | return -EINVAL; | |
325 | } | |
326 | ||
327 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
328 | if (tmp->type != ACPI_TYPE_STRING) { | |
329 | dev_warn(dev, "Invalid type (name): %d\n", tmp->type); | |
330 | return -EINVAL; | |
331 | } | |
332 | ||
333 | /* Don't check... we don't know what they're useful for anyway */ | |
334 | #if 0 | |
335 | tmp = &obj->package.elements[HWMON_PACK_UNK1]; | |
336 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
337 | dev_warn(dev, "Invalid type (unk1): %d\n", tmp->type); | |
338 | return -EINVAL; | |
339 | } | |
340 | ||
341 | tmp = &obj->package.elements[HWMON_PACK_UNK2]; | |
342 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
343 | dev_warn(dev, "Invalid type (unk2): %d\n", tmp->type); | |
344 | return -EINVAL; | |
345 | } | |
346 | #endif | |
347 | ||
348 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
349 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
350 | dev_warn(dev, "Invalid type (limit1): %d\n", tmp->type); | |
351 | return -EINVAL; | |
352 | } | |
353 | ||
354 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
355 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
356 | dev_warn(dev, "Invalid type (limit2): %d\n", tmp->type); | |
357 | return -EINVAL; | |
358 | } | |
359 | ||
360 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
361 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
362 | dev_warn(dev, "Invalid type (enable): %d\n", tmp->type); | |
363 | return -EINVAL; | |
364 | } | |
365 | ||
366 | atk_print_sensor(data, obj); | |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
b9008708 | 371 | #ifdef DEBUG |
2c03d07a LT |
372 | static char const *atk_sensor_type(union acpi_object *flags) |
373 | { | |
374 | u64 type = flags->integer.value & ATK_TYPE_MASK; | |
375 | char const *what; | |
376 | ||
377 | switch (type) { | |
378 | case HWMON_TYPE_VOLT: | |
379 | what = "voltage"; | |
380 | break; | |
381 | case HWMON_TYPE_TEMP: | |
382 | what = "temperature"; | |
383 | break; | |
384 | case HWMON_TYPE_FAN: | |
385 | what = "fan"; | |
386 | break; | |
387 | default: | |
388 | what = "unknown"; | |
389 | break; | |
390 | } | |
391 | ||
392 | return what; | |
393 | } | |
b9008708 | 394 | #endif |
2c03d07a LT |
395 | |
396 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj) | |
397 | { | |
398 | #ifdef DEBUG | |
399 | struct device *dev = &data->acpi_dev->dev; | |
400 | union acpi_object *flags; | |
401 | union acpi_object *name; | |
402 | union acpi_object *limit1; | |
403 | union acpi_object *limit2; | |
404 | union acpi_object *enable; | |
405 | char const *what; | |
406 | ||
407 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
408 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
409 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
410 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
411 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
412 | ||
413 | what = atk_sensor_type(flags); | |
414 | ||
415 | dev_dbg(dev, "%s: %#llx %s [%llu-%llu] %s\n", what, | |
416 | flags->integer.value, | |
417 | name->string.pointer, | |
418 | limit1->integer.value, limit2->integer.value, | |
419 | enable->integer.value ? "enabled" : "disabled"); | |
420 | #endif | |
421 | } | |
422 | ||
423 | static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value) | |
424 | { | |
425 | struct atk_data *data = sensor->data; | |
426 | struct device *dev = &data->acpi_dev->dev; | |
427 | struct acpi_object_list params; | |
428 | union acpi_object id; | |
429 | acpi_status status; | |
430 | acpi_handle method; | |
431 | ||
432 | switch (sensor->type) { | |
433 | case HWMON_TYPE_VOLT: | |
434 | method = data->rvlt_handle; | |
435 | break; | |
436 | case HWMON_TYPE_TEMP: | |
437 | method = data->rtmp_handle; | |
438 | break; | |
439 | case HWMON_TYPE_FAN: | |
440 | method = data->rfan_handle; | |
441 | break; | |
442 | default: | |
443 | return -EINVAL; | |
444 | } | |
445 | ||
446 | id.type = ACPI_TYPE_INTEGER; | |
447 | id.integer.value = sensor->id; | |
448 | ||
449 | params.count = 1; | |
450 | params.pointer = &id; | |
451 | ||
452 | status = acpi_evaluate_integer(method, NULL, ¶ms, value); | |
453 | if (status != AE_OK) { | |
454 | dev_warn(dev, "%s: ACPI exception: %s\n", __func__, | |
455 | acpi_format_exception(status)); | |
456 | return -EIO; | |
457 | } | |
458 | ||
459 | return 0; | |
460 | } | |
461 | ||
18e25555 | 462 | static union acpi_object *atk_ggrp(struct atk_data *data, u16 mux) |
2c03d07a | 463 | { |
2c03d07a | 464 | struct device *dev = &data->acpi_dev->dev; |
18e25555 LT |
465 | struct acpi_buffer buf; |
466 | acpi_status ret; | |
2c03d07a | 467 | struct acpi_object_list params; |
2c03d07a | 468 | union acpi_object id; |
18e25555 | 469 | union acpi_object *pack; |
2c03d07a LT |
470 | |
471 | id.type = ACPI_TYPE_INTEGER; | |
18e25555 | 472 | id.integer.value = mux; |
2c03d07a LT |
473 | params.count = 1; |
474 | params.pointer = &id; | |
475 | ||
18e25555 LT |
476 | buf.length = ACPI_ALLOCATE_BUFFER; |
477 | ret = acpi_evaluate_object(data->enumerate_handle, NULL, ¶ms, &buf); | |
478 | if (ret != AE_OK) { | |
479 | dev_err(dev, "GGRP[%#x] ACPI exception: %s\n", mux, | |
480 | acpi_format_exception(ret)); | |
481 | return ERR_PTR(-EIO); | |
482 | } | |
483 | pack = buf.pointer; | |
484 | if (pack->type != ACPI_TYPE_PACKAGE) { | |
485 | /* Execution was successful, but the id was not found */ | |
486 | ACPI_FREE(pack); | |
487 | return ERR_PTR(-ENOENT); | |
488 | } | |
489 | ||
490 | if (pack->package.count < 1) { | |
491 | dev_err(dev, "GGRP[%#x] package is too small\n", mux); | |
492 | ACPI_FREE(pack); | |
493 | return ERR_PTR(-EIO); | |
494 | } | |
495 | return pack; | |
496 | } | |
2c03d07a | 497 | |
18e25555 LT |
498 | static union acpi_object *atk_gitm(struct atk_data *data, u64 id) |
499 | { | |
500 | struct device *dev = &data->acpi_dev->dev; | |
501 | struct atk_acpi_input_buf buf; | |
502 | union acpi_object tmp; | |
503 | struct acpi_object_list params; | |
504 | struct acpi_buffer ret; | |
505 | union acpi_object *obj; | |
506 | acpi_status status; | |
507 | ||
508 | buf.id = id; | |
509 | buf.param1 = 0; | |
510 | buf.param2 = 0; | |
511 | ||
512 | tmp.type = ACPI_TYPE_BUFFER; | |
513 | tmp.buffer.pointer = (u8 *)&buf; | |
514 | tmp.buffer.length = sizeof(buf); | |
515 | ||
516 | params.count = 1; | |
517 | params.pointer = (void *)&tmp; | |
518 | ||
519 | ret.length = ACPI_ALLOCATE_BUFFER; | |
2c03d07a LT |
520 | status = acpi_evaluate_object_typed(data->read_handle, NULL, ¶ms, |
521 | &ret, ACPI_TYPE_BUFFER); | |
522 | if (status != AE_OK) { | |
18e25555 | 523 | dev_warn(dev, "GITM[%#llx] ACPI exception: %s\n", id, |
2c03d07a | 524 | acpi_format_exception(status)); |
18e25555 | 525 | return ERR_PTR(-EIO); |
2c03d07a | 526 | } |
18e25555 LT |
527 | obj = ret.pointer; |
528 | ||
529 | /* Sanity check */ | |
530 | if (obj->buffer.length < 8) { | |
531 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
532 | obj->buffer.length); | |
533 | ACPI_FREE(obj); | |
534 | return ERR_PTR(-EIO); | |
535 | } | |
536 | return obj; | |
537 | } | |
2c03d07a | 538 | |
9e6eba61 LT |
539 | static union acpi_object *atk_sitm(struct atk_data *data, |
540 | struct atk_acpi_input_buf *buf) | |
541 | { | |
542 | struct device *dev = &data->acpi_dev->dev; | |
543 | struct acpi_object_list params; | |
544 | union acpi_object tmp; | |
545 | struct acpi_buffer ret; | |
546 | union acpi_object *obj; | |
547 | acpi_status status; | |
548 | ||
549 | tmp.type = ACPI_TYPE_BUFFER; | |
550 | tmp.buffer.pointer = (u8 *)buf; | |
551 | tmp.buffer.length = sizeof(*buf); | |
552 | ||
553 | params.count = 1; | |
554 | params.pointer = &tmp; | |
555 | ||
556 | ret.length = ACPI_ALLOCATE_BUFFER; | |
557 | status = acpi_evaluate_object_typed(data->write_handle, NULL, ¶ms, | |
558 | &ret, ACPI_TYPE_BUFFER); | |
559 | if (status != AE_OK) { | |
560 | dev_warn(dev, "SITM[%#x] ACPI exception: %s\n", buf->id, | |
561 | acpi_format_exception(status)); | |
562 | return ERR_PTR(-EIO); | |
563 | } | |
564 | obj = ret.pointer; | |
565 | ||
566 | /* Sanity check */ | |
567 | if (obj->buffer.length < 8) { | |
568 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
569 | obj->buffer.length); | |
570 | ACPI_FREE(obj); | |
571 | return ERR_PTR(-EIO); | |
572 | } | |
573 | return obj; | |
574 | } | |
575 | ||
18e25555 LT |
576 | static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value) |
577 | { | |
578 | struct atk_data *data = sensor->data; | |
579 | struct device *dev = &data->acpi_dev->dev; | |
580 | union acpi_object *obj; | |
581 | struct atk_acpi_ret_buffer *buf; | |
582 | int err = 0; | |
583 | ||
584 | obj = atk_gitm(data, sensor->id); | |
585 | if (IS_ERR(obj)) | |
586 | return PTR_ERR(obj); | |
587 | ||
588 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
589 | if (buf->flags == 0) { | |
2c03d07a LT |
590 | /* The reading is not valid, possible causes: |
591 | * - sensor failure | |
592 | * - enumeration was FUBAR (and we didn't notice) | |
593 | */ | |
18e25555 LT |
594 | dev_warn(dev, "Read failed, sensor = %#llx\n", sensor->id); |
595 | err = -EIO; | |
596 | goto out; | |
2c03d07a LT |
597 | } |
598 | ||
18e25555 LT |
599 | *value = buf->value; |
600 | out: | |
601 | ACPI_FREE(obj); | |
602 | return err; | |
2c03d07a LT |
603 | } |
604 | ||
605 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value) | |
606 | { | |
607 | int err; | |
608 | ||
609 | if (!sensor->is_valid || | |
610 | time_after(jiffies, sensor->last_updated + CACHE_TIME)) { | |
611 | if (sensor->data->old_interface) | |
612 | err = atk_read_value_old(sensor, value); | |
613 | else | |
614 | err = atk_read_value_new(sensor, value); | |
615 | ||
616 | sensor->is_valid = true; | |
617 | sensor->last_updated = jiffies; | |
618 | sensor->cached_value = *value; | |
619 | } else { | |
620 | *value = sensor->cached_value; | |
621 | err = 0; | |
622 | } | |
623 | ||
624 | return err; | |
625 | } | |
626 | ||
627 | static int atk_add_sensor(struct atk_data *data, union acpi_object *obj) | |
628 | { | |
629 | struct device *dev = &data->acpi_dev->dev; | |
630 | union acpi_object *flags; | |
631 | union acpi_object *name; | |
632 | union acpi_object *limit1; | |
633 | union acpi_object *limit2; | |
634 | union acpi_object *enable; | |
635 | struct atk_sensor_data *sensor; | |
636 | char const *base_name; | |
637 | char const *limit1_name; | |
638 | char const *limit2_name; | |
639 | u64 type; | |
640 | int err; | |
641 | int *num; | |
642 | int start; | |
643 | ||
644 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
645 | /* wft is this? */ | |
646 | dev_warn(dev, "Unknown type for ACPI object: (%d)\n", | |
647 | obj->type); | |
648 | return -EINVAL; | |
649 | } | |
650 | ||
651 | err = validate_hwmon_pack(data, obj); | |
652 | if (err) | |
653 | return err; | |
654 | ||
655 | /* Ok, we have a valid hwmon package */ | |
656 | type = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS)->integer.value | |
657 | & ATK_TYPE_MASK; | |
658 | ||
659 | switch (type) { | |
660 | case HWMON_TYPE_VOLT: | |
661 | base_name = "in"; | |
662 | limit1_name = "min"; | |
663 | limit2_name = "max"; | |
664 | num = &data->voltage_count; | |
665 | start = 0; | |
666 | break; | |
667 | case HWMON_TYPE_TEMP: | |
668 | base_name = "temp"; | |
669 | limit1_name = "max"; | |
670 | limit2_name = "crit"; | |
671 | num = &data->temperature_count; | |
672 | start = 1; | |
673 | break; | |
674 | case HWMON_TYPE_FAN: | |
675 | base_name = "fan"; | |
676 | limit1_name = "min"; | |
677 | limit2_name = "max"; | |
678 | num = &data->fan_count; | |
679 | start = 1; | |
680 | break; | |
681 | default: | |
682 | dev_warn(dev, "Unknown sensor type: %#llx\n", type); | |
683 | return -EINVAL; | |
684 | } | |
685 | ||
686 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
687 | if (!enable->integer.value) | |
688 | /* sensor is disabled */ | |
689 | return 0; | |
690 | ||
691 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
692 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
693 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
694 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
695 | ||
696 | sensor = kzalloc(sizeof(*sensor), GFP_KERNEL); | |
697 | if (!sensor) | |
698 | return -ENOMEM; | |
699 | ||
700 | sensor->acpi_name = kstrdup(name->string.pointer, GFP_KERNEL); | |
701 | if (!sensor->acpi_name) { | |
702 | err = -ENOMEM; | |
703 | goto out; | |
704 | } | |
705 | ||
706 | INIT_LIST_HEAD(&sensor->list); | |
707 | sensor->type = type; | |
708 | sensor->data = data; | |
709 | sensor->id = flags->integer.value; | |
710 | sensor->limit1 = limit1->integer.value; | |
8d282497 LT |
711 | if (data->old_interface) |
712 | sensor->limit2 = limit2->integer.value; | |
713 | else | |
714 | /* The upper limit is expressed as delta from lower limit */ | |
715 | sensor->limit2 = sensor->limit1 + limit2->integer.value; | |
2c03d07a LT |
716 | |
717 | snprintf(sensor->input_attr_name, ATTR_NAME_SIZE, | |
718 | "%s%d_input", base_name, start + *num); | |
719 | atk_init_attribute(&sensor->input_attr, | |
720 | sensor->input_attr_name, | |
721 | atk_input_show); | |
722 | ||
723 | snprintf(sensor->label_attr_name, ATTR_NAME_SIZE, | |
724 | "%s%d_label", base_name, start + *num); | |
725 | atk_init_attribute(&sensor->label_attr, | |
726 | sensor->label_attr_name, | |
727 | atk_label_show); | |
728 | ||
729 | snprintf(sensor->limit1_attr_name, ATTR_NAME_SIZE, | |
730 | "%s%d_%s", base_name, start + *num, limit1_name); | |
731 | atk_init_attribute(&sensor->limit1_attr, | |
732 | sensor->limit1_attr_name, | |
733 | atk_limit1_show); | |
734 | ||
735 | snprintf(sensor->limit2_attr_name, ATTR_NAME_SIZE, | |
736 | "%s%d_%s", base_name, start + *num, limit2_name); | |
737 | atk_init_attribute(&sensor->limit2_attr, | |
738 | sensor->limit2_attr_name, | |
739 | atk_limit2_show); | |
740 | ||
741 | list_add(&sensor->list, &data->sensor_list); | |
742 | (*num)++; | |
743 | ||
744 | return 1; | |
745 | out: | |
746 | kfree(sensor->acpi_name); | |
747 | kfree(sensor); | |
748 | return err; | |
749 | } | |
750 | ||
751 | static int atk_enumerate_old_hwmon(struct atk_data *data) | |
752 | { | |
753 | struct device *dev = &data->acpi_dev->dev; | |
754 | struct acpi_buffer buf; | |
755 | union acpi_object *pack; | |
756 | acpi_status status; | |
757 | int i, ret; | |
758 | int count = 0; | |
759 | ||
760 | /* Voltages */ | |
761 | buf.length = ACPI_ALLOCATE_BUFFER; | |
762 | status = acpi_evaluate_object_typed(data->atk_handle, | |
763 | METHOD_OLD_ENUM_VLT, NULL, &buf, ACPI_TYPE_PACKAGE); | |
764 | if (status != AE_OK) { | |
765 | dev_warn(dev, METHOD_OLD_ENUM_VLT ": ACPI exception: %s\n", | |
766 | acpi_format_exception(status)); | |
767 | ||
768 | return -ENODEV; | |
769 | } | |
770 | ||
771 | pack = buf.pointer; | |
772 | for (i = 1; i < pack->package.count; i++) { | |
773 | union acpi_object *obj = &pack->package.elements[i]; | |
774 | ||
775 | ret = atk_add_sensor(data, obj); | |
776 | if (ret > 0) | |
777 | count++; | |
778 | } | |
779 | ACPI_FREE(buf.pointer); | |
780 | ||
781 | /* Temperatures */ | |
782 | buf.length = ACPI_ALLOCATE_BUFFER; | |
783 | status = acpi_evaluate_object_typed(data->atk_handle, | |
784 | METHOD_OLD_ENUM_TMP, NULL, &buf, ACPI_TYPE_PACKAGE); | |
785 | if (status != AE_OK) { | |
786 | dev_warn(dev, METHOD_OLD_ENUM_TMP ": ACPI exception: %s\n", | |
787 | acpi_format_exception(status)); | |
788 | ||
789 | ret = -ENODEV; | |
790 | goto cleanup; | |
791 | } | |
792 | ||
793 | pack = buf.pointer; | |
794 | for (i = 1; i < pack->package.count; i++) { | |
795 | union acpi_object *obj = &pack->package.elements[i]; | |
796 | ||
797 | ret = atk_add_sensor(data, obj); | |
798 | if (ret > 0) | |
799 | count++; | |
800 | } | |
801 | ACPI_FREE(buf.pointer); | |
802 | ||
803 | /* Fans */ | |
804 | buf.length = ACPI_ALLOCATE_BUFFER; | |
805 | status = acpi_evaluate_object_typed(data->atk_handle, | |
806 | METHOD_OLD_ENUM_FAN, NULL, &buf, ACPI_TYPE_PACKAGE); | |
807 | if (status != AE_OK) { | |
808 | dev_warn(dev, METHOD_OLD_ENUM_FAN ": ACPI exception: %s\n", | |
809 | acpi_format_exception(status)); | |
810 | ||
811 | ret = -ENODEV; | |
812 | goto cleanup; | |
813 | } | |
814 | ||
815 | pack = buf.pointer; | |
816 | for (i = 1; i < pack->package.count; i++) { | |
817 | union acpi_object *obj = &pack->package.elements[i]; | |
818 | ||
819 | ret = atk_add_sensor(data, obj); | |
820 | if (ret > 0) | |
821 | count++; | |
822 | } | |
823 | ACPI_FREE(buf.pointer); | |
824 | ||
825 | return count; | |
826 | cleanup: | |
827 | atk_free_sensors(data); | |
828 | return ret; | |
829 | } | |
830 | ||
9e6eba61 LT |
831 | static int atk_ec_present(struct atk_data *data) |
832 | { | |
833 | struct device *dev = &data->acpi_dev->dev; | |
834 | union acpi_object *pack; | |
835 | union acpi_object *ec; | |
836 | int ret; | |
837 | int i; | |
838 | ||
839 | pack = atk_ggrp(data, ATK_MUX_MGMT); | |
840 | if (IS_ERR(pack)) { | |
841 | if (PTR_ERR(pack) == -ENOENT) { | |
842 | /* The MGMT class does not exists - that's ok */ | |
843 | dev_dbg(dev, "Class %#llx not found\n", ATK_MUX_MGMT); | |
844 | return 0; | |
845 | } | |
846 | return PTR_ERR(pack); | |
847 | } | |
848 | ||
849 | /* Search the EC */ | |
850 | ec = NULL; | |
851 | for (i = 0; i < pack->package.count; i++) { | |
852 | union acpi_object *obj = &pack->package.elements[i]; | |
853 | union acpi_object *id; | |
854 | ||
855 | if (obj->type != ACPI_TYPE_PACKAGE) | |
856 | continue; | |
857 | ||
858 | id = &obj->package.elements[0]; | |
859 | if (id->type != ACPI_TYPE_INTEGER) | |
860 | continue; | |
861 | ||
862 | if (id->integer.value == ATK_EC_ID) { | |
863 | ec = obj; | |
864 | break; | |
865 | } | |
866 | } | |
867 | ||
868 | ret = (ec != NULL); | |
869 | if (!ret) | |
870 | /* The system has no EC */ | |
871 | dev_dbg(dev, "EC not found\n"); | |
872 | ||
873 | ACPI_FREE(pack); | |
874 | return ret; | |
875 | } | |
876 | ||
877 | static int atk_ec_enabled(struct atk_data *data) | |
878 | { | |
879 | struct device *dev = &data->acpi_dev->dev; | |
880 | union acpi_object *obj; | |
881 | struct atk_acpi_ret_buffer *buf; | |
882 | int err; | |
883 | ||
884 | obj = atk_gitm(data, ATK_EC_ID); | |
885 | if (IS_ERR(obj)) { | |
886 | dev_err(dev, "Unable to query EC status\n"); | |
887 | return PTR_ERR(obj); | |
888 | } | |
889 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
890 | ||
891 | if (buf->flags == 0) { | |
892 | dev_err(dev, "Unable to query EC status\n"); | |
893 | err = -EIO; | |
894 | } else { | |
895 | err = (buf->value != 0); | |
896 | dev_dbg(dev, "EC is %sabled\n", | |
897 | err ? "en" : "dis"); | |
898 | } | |
899 | ||
900 | ACPI_FREE(obj); | |
901 | return err; | |
902 | } | |
903 | ||
904 | static int atk_ec_ctl(struct atk_data *data, int enable) | |
905 | { | |
906 | struct device *dev = &data->acpi_dev->dev; | |
907 | union acpi_object *obj; | |
908 | struct atk_acpi_input_buf sitm; | |
909 | struct atk_acpi_ret_buffer *ec_ret; | |
910 | int err = 0; | |
911 | ||
912 | sitm.id = ATK_EC_ID; | |
913 | sitm.param1 = enable; | |
914 | sitm.param2 = 0; | |
915 | ||
916 | obj = atk_sitm(data, &sitm); | |
917 | if (IS_ERR(obj)) { | |
918 | dev_err(dev, "Failed to %sable the EC\n", | |
919 | enable ? "en" : "dis"); | |
920 | return PTR_ERR(obj); | |
921 | } | |
922 | ec_ret = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
923 | if (ec_ret->flags == 0) { | |
924 | dev_err(dev, "Failed to %sable the EC\n", | |
925 | enable ? "en" : "dis"); | |
926 | err = -EIO; | |
927 | } else { | |
928 | dev_info(dev, "EC %sabled\n", | |
929 | enable ? "en" : "dis"); | |
930 | } | |
931 | ||
932 | ACPI_FREE(obj); | |
933 | return err; | |
934 | } | |
935 | ||
2c03d07a LT |
936 | static int atk_enumerate_new_hwmon(struct atk_data *data) |
937 | { | |
938 | struct device *dev = &data->acpi_dev->dev; | |
2c03d07a LT |
939 | union acpi_object *pack; |
940 | int err; | |
941 | int i; | |
942 | ||
9e6eba61 LT |
943 | err = atk_ec_present(data); |
944 | if (err < 0) | |
945 | return err; | |
946 | if (err) { | |
947 | err = atk_ec_enabled(data); | |
948 | if (err < 0) | |
949 | return err; | |
950 | /* If the EC was disabled we will disable it again on unload */ | |
951 | data->disable_ec = err; | |
952 | ||
953 | err = atk_ec_ctl(data, 1); | |
954 | if (err) { | |
955 | data->disable_ec = false; | |
956 | return err; | |
957 | } | |
958 | } | |
959 | ||
2c03d07a LT |
960 | dev_dbg(dev, "Enumerating hwmon sensors\n"); |
961 | ||
18e25555 LT |
962 | pack = atk_ggrp(data, ATK_MUX_HWMON); |
963 | if (IS_ERR(pack)) | |
964 | return PTR_ERR(pack); | |
2c03d07a LT |
965 | |
966 | for (i = 0; i < pack->package.count; i++) { | |
967 | union acpi_object *obj = &pack->package.elements[i]; | |
968 | ||
969 | atk_add_sensor(data, obj); | |
970 | } | |
971 | ||
972 | err = data->voltage_count + data->temperature_count + data->fan_count; | |
973 | ||
18e25555 | 974 | ACPI_FREE(pack); |
2c03d07a LT |
975 | return err; |
976 | } | |
977 | ||
978 | static int atk_create_files(struct atk_data *data) | |
979 | { | |
980 | struct atk_sensor_data *s; | |
981 | int err; | |
982 | ||
983 | list_for_each_entry(s, &data->sensor_list, list) { | |
984 | err = device_create_file(data->hwmon_dev, &s->input_attr); | |
985 | if (err) | |
986 | return err; | |
987 | err = device_create_file(data->hwmon_dev, &s->label_attr); | |
988 | if (err) | |
989 | return err; | |
990 | err = device_create_file(data->hwmon_dev, &s->limit1_attr); | |
991 | if (err) | |
992 | return err; | |
993 | err = device_create_file(data->hwmon_dev, &s->limit2_attr); | |
994 | if (err) | |
995 | return err; | |
996 | } | |
997 | ||
998 | err = device_create_file(data->hwmon_dev, &atk_name_attr); | |
999 | ||
1000 | return err; | |
1001 | } | |
1002 | ||
1003 | static void atk_remove_files(struct atk_data *data) | |
1004 | { | |
1005 | struct atk_sensor_data *s; | |
1006 | ||
1007 | list_for_each_entry(s, &data->sensor_list, list) { | |
1008 | device_remove_file(data->hwmon_dev, &s->input_attr); | |
1009 | device_remove_file(data->hwmon_dev, &s->label_attr); | |
1010 | device_remove_file(data->hwmon_dev, &s->limit1_attr); | |
1011 | device_remove_file(data->hwmon_dev, &s->limit2_attr); | |
1012 | } | |
1013 | device_remove_file(data->hwmon_dev, &atk_name_attr); | |
1014 | } | |
1015 | ||
1016 | static void atk_free_sensors(struct atk_data *data) | |
1017 | { | |
1018 | struct list_head *head = &data->sensor_list; | |
1019 | struct atk_sensor_data *s, *tmp; | |
1020 | ||
1021 | list_for_each_entry_safe(s, tmp, head, list) { | |
1022 | kfree(s->acpi_name); | |
1023 | kfree(s); | |
1024 | } | |
1025 | } | |
1026 | ||
1027 | static int atk_register_hwmon(struct atk_data *data) | |
1028 | { | |
1029 | struct device *dev = &data->acpi_dev->dev; | |
1030 | int err; | |
1031 | ||
1032 | dev_dbg(dev, "registering hwmon device\n"); | |
1033 | data->hwmon_dev = hwmon_device_register(dev); | |
1034 | if (IS_ERR(data->hwmon_dev)) | |
1035 | return PTR_ERR(data->hwmon_dev); | |
1036 | ||
1037 | dev_dbg(dev, "populating sysfs directory\n"); | |
1038 | err = atk_create_files(data); | |
1039 | if (err) | |
1040 | goto remove; | |
1041 | ||
1042 | return 0; | |
1043 | remove: | |
1044 | /* Cleanup the registered files */ | |
1045 | atk_remove_files(data); | |
1046 | hwmon_device_unregister(data->hwmon_dev); | |
1047 | return err; | |
1048 | } | |
1049 | ||
1050 | static int atk_check_old_if(struct atk_data *data) | |
1051 | { | |
1052 | struct device *dev = &data->acpi_dev->dev; | |
1053 | acpi_handle ret; | |
1054 | acpi_status status; | |
1055 | ||
1056 | /* RTMP: read temperature */ | |
1057 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_TMP, &ret); | |
1058 | if (status != AE_OK) { | |
1059 | dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n", | |
1060 | acpi_format_exception(status)); | |
1061 | return -ENODEV; | |
1062 | } | |
1063 | data->rtmp_handle = ret; | |
1064 | ||
1065 | /* RVLT: read voltage */ | |
1066 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_VLT, &ret); | |
1067 | if (status != AE_OK) { | |
1068 | dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n", | |
1069 | acpi_format_exception(status)); | |
1070 | return -ENODEV; | |
1071 | } | |
1072 | data->rvlt_handle = ret; | |
1073 | ||
1074 | /* RFAN: read fan status */ | |
1075 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_FAN, &ret); | |
1076 | if (status != AE_OK) { | |
1077 | dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n", | |
1078 | acpi_format_exception(status)); | |
1079 | return -ENODEV; | |
1080 | } | |
1081 | data->rfan_handle = ret; | |
1082 | ||
1083 | return 0; | |
1084 | } | |
1085 | ||
1086 | static int atk_check_new_if(struct atk_data *data) | |
1087 | { | |
1088 | struct device *dev = &data->acpi_dev->dev; | |
1089 | acpi_handle ret; | |
1090 | acpi_status status; | |
1091 | ||
1092 | /* Enumeration */ | |
1093 | status = acpi_get_handle(data->atk_handle, METHOD_ENUMERATE, &ret); | |
1094 | if (status != AE_OK) { | |
1095 | dev_dbg(dev, "method " METHOD_ENUMERATE " not found: %s\n", | |
1096 | acpi_format_exception(status)); | |
1097 | return -ENODEV; | |
1098 | } | |
1099 | data->enumerate_handle = ret; | |
1100 | ||
1101 | /* De-multiplexer (read) */ | |
1102 | status = acpi_get_handle(data->atk_handle, METHOD_READ, &ret); | |
1103 | if (status != AE_OK) { | |
1104 | dev_dbg(dev, "method " METHOD_READ " not found: %s\n", | |
1105 | acpi_format_exception(status)); | |
1106 | return -ENODEV; | |
1107 | } | |
1108 | data->read_handle = ret; | |
1109 | ||
9e6eba61 LT |
1110 | /* De-multiplexer (write) */ |
1111 | status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret); | |
1112 | if (status != AE_OK) { | |
1113 | dev_dbg(dev, "method " METHOD_READ " not found: %s\n", | |
1114 | acpi_format_exception(status)); | |
1115 | return -ENODEV; | |
1116 | } | |
1117 | data->write_handle = ret; | |
1118 | ||
2c03d07a LT |
1119 | return 0; |
1120 | } | |
1121 | ||
1122 | static int atk_add(struct acpi_device *device) | |
1123 | { | |
1124 | acpi_status ret; | |
1125 | int err; | |
1126 | struct acpi_buffer buf; | |
1127 | union acpi_object *obj; | |
1128 | struct atk_data *data; | |
1129 | ||
1130 | dev_dbg(&device->dev, "adding...\n"); | |
1131 | ||
1132 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
1133 | if (!data) | |
1134 | return -ENOMEM; | |
1135 | ||
1136 | data->acpi_dev = device; | |
1137 | data->atk_handle = device->handle; | |
1138 | INIT_LIST_HEAD(&data->sensor_list); | |
9e6eba61 | 1139 | data->disable_ec = false; |
2c03d07a LT |
1140 | |
1141 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1142 | ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL, | |
1143 | &buf, ACPI_TYPE_PACKAGE); | |
1144 | if (ret != AE_OK) { | |
1145 | dev_dbg(&device->dev, "atk: method MBIF not found\n"); | |
1146 | err = -ENODEV; | |
1147 | goto out; | |
1148 | } | |
1149 | ||
1150 | obj = buf.pointer; | |
1151 | if (obj->package.count >= 2 && | |
1152 | obj->package.elements[1].type == ACPI_TYPE_STRING) { | |
1153 | dev_dbg(&device->dev, "board ID = %s\n", | |
1154 | obj->package.elements[1].string.pointer); | |
1155 | } | |
1156 | ACPI_FREE(buf.pointer); | |
1157 | ||
1158 | /* Check for hwmon methods: first check "old" style methods; note that | |
1159 | * both may be present: in this case we stick to the old interface; | |
1160 | * analysis of multiple DSDTs indicates that when both interfaces | |
1161 | * are present the new one (GGRP/GITM) is not functional. | |
1162 | */ | |
1163 | err = atk_check_old_if(data); | |
1164 | if (!err) { | |
1165 | dev_dbg(&device->dev, "Using old hwmon interface\n"); | |
1166 | data->old_interface = true; | |
1167 | } else { | |
1168 | err = atk_check_new_if(data); | |
1169 | if (err) | |
1170 | goto out; | |
1171 | ||
1172 | dev_dbg(&device->dev, "Using new hwmon interface\n"); | |
1173 | data->old_interface = false; | |
1174 | } | |
1175 | ||
1176 | if (data->old_interface) | |
1177 | err = atk_enumerate_old_hwmon(data); | |
1178 | else | |
1179 | err = atk_enumerate_new_hwmon(data); | |
1180 | if (err < 0) | |
1181 | goto out; | |
1182 | if (err == 0) { | |
1183 | dev_info(&device->dev, | |
1184 | "No usable sensor detected, bailing out\n"); | |
1185 | err = -ENODEV; | |
1186 | goto out; | |
1187 | } | |
1188 | ||
1189 | err = atk_register_hwmon(data); | |
1190 | if (err) | |
1191 | goto cleanup; | |
1192 | ||
1193 | device->driver_data = data; | |
1194 | return 0; | |
1195 | cleanup: | |
1196 | atk_free_sensors(data); | |
1197 | out: | |
9e6eba61 LT |
1198 | if (data->disable_ec) |
1199 | atk_ec_ctl(data, 0); | |
2c03d07a LT |
1200 | kfree(data); |
1201 | return err; | |
1202 | } | |
1203 | ||
1204 | static int atk_remove(struct acpi_device *device, int type) | |
1205 | { | |
1206 | struct atk_data *data = device->driver_data; | |
1207 | dev_dbg(&device->dev, "removing...\n"); | |
1208 | ||
1209 | device->driver_data = NULL; | |
1210 | ||
1211 | atk_remove_files(data); | |
1212 | atk_free_sensors(data); | |
1213 | hwmon_device_unregister(data->hwmon_dev); | |
1214 | ||
9e6eba61 LT |
1215 | if (data->disable_ec) { |
1216 | if (atk_ec_ctl(data, 0)) | |
1217 | dev_err(&device->dev, "Failed to disable EC\n"); | |
1218 | } | |
1219 | ||
2c03d07a LT |
1220 | kfree(data); |
1221 | ||
1222 | return 0; | |
1223 | } | |
1224 | ||
1225 | static int __init atk0110_init(void) | |
1226 | { | |
1227 | int ret; | |
1228 | ||
1229 | ret = acpi_bus_register_driver(&atk_driver); | |
1230 | if (ret) | |
1231 | pr_info("atk: acpi_bus_register_driver failed: %d\n", ret); | |
1232 | ||
1233 | return ret; | |
1234 | } | |
1235 | ||
1236 | static void __exit atk0110_exit(void) | |
1237 | { | |
1238 | acpi_bus_unregister_driver(&atk_driver); | |
1239 | } | |
1240 | ||
1241 | module_init(atk0110_init); | |
1242 | module_exit(atk0110_exit); | |
1243 | ||
1244 | MODULE_LICENSE("GPL"); |