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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 | ||
7e5eab11 | 8 | #include <linux/debugfs.h> |
2c03d07a LT |
9 | #include <linux/kernel.h> |
10 | #include <linux/hwmon.h> | |
11 | #include <linux/list.h> | |
12 | #include <linux/module.h> | |
13 | ||
14 | #include <acpi/acpi.h> | |
15 | #include <acpi/acpixf.h> | |
16 | #include <acpi/acpi_drivers.h> | |
17 | #include <acpi/acpi_bus.h> | |
18 | ||
19 | ||
20 | #define ATK_HID "ATK0110" | |
21 | ||
22 | /* Minimum time between readings, enforced in order to avoid | |
23 | * hogging the CPU. | |
24 | */ | |
25 | #define CACHE_TIME HZ | |
26 | ||
27 | #define BOARD_ID "MBIF" | |
28 | #define METHOD_ENUMERATE "GGRP" | |
29 | #define METHOD_READ "GITM" | |
30 | #define METHOD_WRITE "SITM" | |
31 | #define METHOD_OLD_READ_TMP "RTMP" | |
32 | #define METHOD_OLD_READ_VLT "RVLT" | |
33 | #define METHOD_OLD_READ_FAN "RFAN" | |
34 | #define METHOD_OLD_ENUM_TMP "TSIF" | |
35 | #define METHOD_OLD_ENUM_VLT "VSIF" | |
36 | #define METHOD_OLD_ENUM_FAN "FSIF" | |
37 | ||
38 | #define ATK_MUX_HWMON 0x00000006ULL | |
9e6eba61 | 39 | #define ATK_MUX_MGMT 0x00000011ULL |
2c03d07a LT |
40 | |
41 | #define ATK_CLASS_MASK 0xff000000ULL | |
42 | #define ATK_CLASS_FREQ_CTL 0x03000000ULL | |
43 | #define ATK_CLASS_FAN_CTL 0x04000000ULL | |
44 | #define ATK_CLASS_HWMON 0x06000000ULL | |
9e6eba61 | 45 | #define ATK_CLASS_MGMT 0x11000000ULL |
2c03d07a LT |
46 | |
47 | #define ATK_TYPE_MASK 0x00ff0000ULL | |
48 | #define HWMON_TYPE_VOLT 0x00020000ULL | |
49 | #define HWMON_TYPE_TEMP 0x00030000ULL | |
50 | #define HWMON_TYPE_FAN 0x00040000ULL | |
51 | ||
9e6eba61 LT |
52 | #define ATK_ELEMENT_ID_MASK 0x0000ffffULL |
53 | ||
54 | #define ATK_EC_ID 0x11060004ULL | |
2c03d07a LT |
55 | |
56 | enum atk_pack_member { | |
57 | HWMON_PACK_FLAGS, | |
58 | HWMON_PACK_NAME, | |
59 | HWMON_PACK_LIMIT1, | |
60 | HWMON_PACK_LIMIT2, | |
61 | HWMON_PACK_ENABLE | |
62 | }; | |
63 | ||
64 | /* New package format */ | |
65 | #define _HWMON_NEW_PACK_SIZE 7 | |
66 | #define _HWMON_NEW_PACK_FLAGS 0 | |
67 | #define _HWMON_NEW_PACK_NAME 1 | |
68 | #define _HWMON_NEW_PACK_UNK1 2 | |
69 | #define _HWMON_NEW_PACK_UNK2 3 | |
70 | #define _HWMON_NEW_PACK_LIMIT1 4 | |
71 | #define _HWMON_NEW_PACK_LIMIT2 5 | |
72 | #define _HWMON_NEW_PACK_ENABLE 6 | |
73 | ||
74 | /* Old package format */ | |
75 | #define _HWMON_OLD_PACK_SIZE 5 | |
76 | #define _HWMON_OLD_PACK_FLAGS 0 | |
77 | #define _HWMON_OLD_PACK_NAME 1 | |
78 | #define _HWMON_OLD_PACK_LIMIT1 2 | |
79 | #define _HWMON_OLD_PACK_LIMIT2 3 | |
80 | #define _HWMON_OLD_PACK_ENABLE 4 | |
81 | ||
82 | ||
83 | struct atk_data { | |
84 | struct device *hwmon_dev; | |
85 | acpi_handle atk_handle; | |
86 | struct acpi_device *acpi_dev; | |
87 | ||
88 | bool old_interface; | |
89 | ||
90 | /* old interface */ | |
91 | acpi_handle rtmp_handle; | |
92 | acpi_handle rvlt_handle; | |
93 | acpi_handle rfan_handle; | |
94 | /* new inteface */ | |
95 | acpi_handle enumerate_handle; | |
96 | acpi_handle read_handle; | |
9e6eba61 LT |
97 | acpi_handle write_handle; |
98 | ||
99 | bool disable_ec; | |
2c03d07a LT |
100 | |
101 | int voltage_count; | |
102 | int temperature_count; | |
103 | int fan_count; | |
104 | struct list_head sensor_list; | |
7e5eab11 LT |
105 | |
106 | struct { | |
107 | struct dentry *root; | |
108 | u32 id; | |
109 | } debugfs; | |
2c03d07a LT |
110 | }; |
111 | ||
112 | ||
113 | typedef ssize_t (*sysfs_show_func)(struct device *dev, | |
114 | struct device_attribute *attr, char *buf); | |
115 | ||
116 | static const struct acpi_device_id atk_ids[] = { | |
117 | {ATK_HID, 0}, | |
118 | {"", 0}, | |
119 | }; | |
120 | MODULE_DEVICE_TABLE(acpi, atk_ids); | |
121 | ||
122 | #define ATTR_NAME_SIZE 16 /* Worst case is "tempN_input" */ | |
123 | ||
124 | struct atk_sensor_data { | |
125 | struct list_head list; | |
126 | struct atk_data *data; | |
127 | struct device_attribute label_attr; | |
128 | struct device_attribute input_attr; | |
129 | struct device_attribute limit1_attr; | |
130 | struct device_attribute limit2_attr; | |
131 | char label_attr_name[ATTR_NAME_SIZE]; | |
132 | char input_attr_name[ATTR_NAME_SIZE]; | |
133 | char limit1_attr_name[ATTR_NAME_SIZE]; | |
134 | char limit2_attr_name[ATTR_NAME_SIZE]; | |
135 | u64 id; | |
136 | u64 type; | |
137 | u64 limit1; | |
138 | u64 limit2; | |
139 | u64 cached_value; | |
140 | unsigned long last_updated; /* in jiffies */ | |
141 | bool is_valid; | |
142 | char const *acpi_name; | |
143 | }; | |
144 | ||
18e25555 LT |
145 | /* Return buffer format: |
146 | * [0-3] "value" is valid flag | |
147 | * [4-7] value | |
148 | * [8- ] unknown stuff on newer mobos | |
149 | */ | |
150 | struct atk_acpi_ret_buffer { | |
151 | u32 flags; | |
152 | u32 value; | |
153 | u8 data[]; | |
154 | }; | |
155 | ||
156 | /* Input buffer used for GITM and SITM methods */ | |
157 | struct atk_acpi_input_buf { | |
158 | u32 id; | |
159 | u32 param1; | |
160 | u32 param2; | |
2c03d07a LT |
161 | }; |
162 | ||
163 | static int atk_add(struct acpi_device *device); | |
164 | static int atk_remove(struct acpi_device *device, int type); | |
165 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj); | |
166 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value); | |
167 | static void atk_free_sensors(struct atk_data *data); | |
168 | ||
169 | static struct acpi_driver atk_driver = { | |
170 | .name = ATK_HID, | |
171 | .class = "hwmon", | |
172 | .ids = atk_ids, | |
173 | .ops = { | |
174 | .add = atk_add, | |
175 | .remove = atk_remove, | |
176 | }, | |
177 | }; | |
178 | ||
179 | #define input_to_atk_sensor(attr) \ | |
180 | container_of(attr, struct atk_sensor_data, input_attr) | |
181 | ||
182 | #define label_to_atk_sensor(attr) \ | |
183 | container_of(attr, struct atk_sensor_data, label_attr) | |
184 | ||
185 | #define limit1_to_atk_sensor(attr) \ | |
186 | container_of(attr, struct atk_sensor_data, limit1_attr) | |
187 | ||
188 | #define limit2_to_atk_sensor(attr) \ | |
189 | container_of(attr, struct atk_sensor_data, limit2_attr) | |
190 | ||
191 | static ssize_t atk_input_show(struct device *dev, | |
192 | struct device_attribute *attr, char *buf) | |
193 | { | |
194 | struct atk_sensor_data *s = input_to_atk_sensor(attr); | |
195 | u64 value; | |
196 | int err; | |
197 | ||
198 | err = atk_read_value(s, &value); | |
199 | if (err) | |
200 | return err; | |
201 | ||
202 | if (s->type == HWMON_TYPE_TEMP) | |
203 | /* ACPI returns decidegree */ | |
204 | value *= 100; | |
205 | ||
206 | return sprintf(buf, "%llu\n", value); | |
207 | } | |
208 | ||
209 | static ssize_t atk_label_show(struct device *dev, | |
210 | struct device_attribute *attr, char *buf) | |
211 | { | |
212 | struct atk_sensor_data *s = label_to_atk_sensor(attr); | |
213 | ||
214 | return sprintf(buf, "%s\n", s->acpi_name); | |
215 | } | |
216 | ||
217 | static ssize_t atk_limit1_show(struct device *dev, | |
218 | struct device_attribute *attr, char *buf) | |
219 | { | |
220 | struct atk_sensor_data *s = limit1_to_atk_sensor(attr); | |
221 | u64 value = s->limit1; | |
222 | ||
223 | if (s->type == HWMON_TYPE_TEMP) | |
224 | value *= 100; | |
225 | ||
226 | return sprintf(buf, "%lld\n", value); | |
227 | } | |
228 | ||
229 | static ssize_t atk_limit2_show(struct device *dev, | |
230 | struct device_attribute *attr, char *buf) | |
231 | { | |
232 | struct atk_sensor_data *s = limit2_to_atk_sensor(attr); | |
233 | u64 value = s->limit2; | |
234 | ||
235 | if (s->type == HWMON_TYPE_TEMP) | |
236 | value *= 100; | |
237 | ||
238 | return sprintf(buf, "%lld\n", value); | |
239 | } | |
240 | ||
241 | static ssize_t atk_name_show(struct device *dev, | |
242 | struct device_attribute *attr, char *buf) | |
243 | { | |
244 | return sprintf(buf, "atk0110\n"); | |
245 | } | |
246 | static struct device_attribute atk_name_attr = | |
247 | __ATTR(name, 0444, atk_name_show, NULL); | |
248 | ||
249 | static void atk_init_attribute(struct device_attribute *attr, char *name, | |
250 | sysfs_show_func show) | |
251 | { | |
252 | attr->attr.name = name; | |
253 | attr->attr.mode = 0444; | |
254 | attr->show = show; | |
255 | attr->store = NULL; | |
256 | } | |
257 | ||
258 | ||
259 | static union acpi_object *atk_get_pack_member(struct atk_data *data, | |
260 | union acpi_object *pack, | |
261 | enum atk_pack_member m) | |
262 | { | |
263 | bool old_if = data->old_interface; | |
264 | int offset; | |
265 | ||
266 | switch (m) { | |
267 | case HWMON_PACK_FLAGS: | |
268 | offset = old_if ? _HWMON_OLD_PACK_FLAGS : _HWMON_NEW_PACK_FLAGS; | |
269 | break; | |
270 | case HWMON_PACK_NAME: | |
271 | offset = old_if ? _HWMON_OLD_PACK_NAME : _HWMON_NEW_PACK_NAME; | |
272 | break; | |
273 | case HWMON_PACK_LIMIT1: | |
274 | offset = old_if ? _HWMON_OLD_PACK_LIMIT1 : | |
275 | _HWMON_NEW_PACK_LIMIT1; | |
276 | break; | |
277 | case HWMON_PACK_LIMIT2: | |
278 | offset = old_if ? _HWMON_OLD_PACK_LIMIT2 : | |
279 | _HWMON_NEW_PACK_LIMIT2; | |
280 | break; | |
281 | case HWMON_PACK_ENABLE: | |
282 | offset = old_if ? _HWMON_OLD_PACK_ENABLE : | |
283 | _HWMON_NEW_PACK_ENABLE; | |
284 | break; | |
285 | default: | |
286 | return NULL; | |
287 | } | |
288 | ||
289 | return &pack->package.elements[offset]; | |
290 | } | |
291 | ||
292 | ||
293 | /* New package format is: | |
294 | * - flag (int) | |
295 | * class - used for de-muxing the request to the correct GITn | |
296 | * type (volt, temp, fan) | |
297 | * sensor id | | |
298 | * sensor id - used for de-muxing the request _inside_ the GITn | |
299 | * - name (str) | |
300 | * - unknown (int) | |
301 | * - unknown (int) | |
302 | * - limit1 (int) | |
303 | * - limit2 (int) | |
304 | * - enable (int) | |
305 | * | |
306 | * The old package has the same format but it's missing the two unknown fields. | |
307 | */ | |
308 | static int validate_hwmon_pack(struct atk_data *data, union acpi_object *obj) | |
309 | { | |
310 | struct device *dev = &data->acpi_dev->dev; | |
311 | union acpi_object *tmp; | |
312 | bool old_if = data->old_interface; | |
313 | int const expected_size = old_if ? _HWMON_OLD_PACK_SIZE : | |
314 | _HWMON_NEW_PACK_SIZE; | |
315 | ||
316 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
317 | dev_warn(dev, "Invalid type: %d\n", obj->type); | |
318 | return -EINVAL; | |
319 | } | |
320 | ||
321 | if (obj->package.count != expected_size) { | |
322 | dev_warn(dev, "Invalid package size: %d, expected: %d\n", | |
323 | obj->package.count, expected_size); | |
324 | return -EINVAL; | |
325 | } | |
326 | ||
327 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
328 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
329 | dev_warn(dev, "Invalid type (flag): %d\n", tmp->type); | |
330 | return -EINVAL; | |
331 | } | |
332 | ||
333 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
334 | if (tmp->type != ACPI_TYPE_STRING) { | |
335 | dev_warn(dev, "Invalid type (name): %d\n", tmp->type); | |
336 | return -EINVAL; | |
337 | } | |
338 | ||
339 | /* Don't check... we don't know what they're useful for anyway */ | |
340 | #if 0 | |
341 | tmp = &obj->package.elements[HWMON_PACK_UNK1]; | |
342 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
343 | dev_warn(dev, "Invalid type (unk1): %d\n", tmp->type); | |
344 | return -EINVAL; | |
345 | } | |
346 | ||
347 | tmp = &obj->package.elements[HWMON_PACK_UNK2]; | |
348 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
349 | dev_warn(dev, "Invalid type (unk2): %d\n", tmp->type); | |
350 | return -EINVAL; | |
351 | } | |
352 | #endif | |
353 | ||
354 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
355 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
356 | dev_warn(dev, "Invalid type (limit1): %d\n", tmp->type); | |
357 | return -EINVAL; | |
358 | } | |
359 | ||
360 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
361 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
362 | dev_warn(dev, "Invalid type (limit2): %d\n", tmp->type); | |
363 | return -EINVAL; | |
364 | } | |
365 | ||
366 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
367 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
368 | dev_warn(dev, "Invalid type (enable): %d\n", tmp->type); | |
369 | return -EINVAL; | |
370 | } | |
371 | ||
372 | atk_print_sensor(data, obj); | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
b9008708 | 377 | #ifdef DEBUG |
2c03d07a LT |
378 | static char const *atk_sensor_type(union acpi_object *flags) |
379 | { | |
380 | u64 type = flags->integer.value & ATK_TYPE_MASK; | |
381 | char const *what; | |
382 | ||
383 | switch (type) { | |
384 | case HWMON_TYPE_VOLT: | |
385 | what = "voltage"; | |
386 | break; | |
387 | case HWMON_TYPE_TEMP: | |
388 | what = "temperature"; | |
389 | break; | |
390 | case HWMON_TYPE_FAN: | |
391 | what = "fan"; | |
392 | break; | |
393 | default: | |
394 | what = "unknown"; | |
395 | break; | |
396 | } | |
397 | ||
398 | return what; | |
399 | } | |
b9008708 | 400 | #endif |
2c03d07a LT |
401 | |
402 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj) | |
403 | { | |
404 | #ifdef DEBUG | |
405 | struct device *dev = &data->acpi_dev->dev; | |
406 | union acpi_object *flags; | |
407 | union acpi_object *name; | |
408 | union acpi_object *limit1; | |
409 | union acpi_object *limit2; | |
410 | union acpi_object *enable; | |
411 | char const *what; | |
412 | ||
413 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
414 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
415 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
416 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
417 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
418 | ||
419 | what = atk_sensor_type(flags); | |
420 | ||
421 | dev_dbg(dev, "%s: %#llx %s [%llu-%llu] %s\n", what, | |
422 | flags->integer.value, | |
423 | name->string.pointer, | |
424 | limit1->integer.value, limit2->integer.value, | |
425 | enable->integer.value ? "enabled" : "disabled"); | |
426 | #endif | |
427 | } | |
428 | ||
429 | static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value) | |
430 | { | |
431 | struct atk_data *data = sensor->data; | |
432 | struct device *dev = &data->acpi_dev->dev; | |
433 | struct acpi_object_list params; | |
434 | union acpi_object id; | |
435 | acpi_status status; | |
436 | acpi_handle method; | |
437 | ||
438 | switch (sensor->type) { | |
439 | case HWMON_TYPE_VOLT: | |
440 | method = data->rvlt_handle; | |
441 | break; | |
442 | case HWMON_TYPE_TEMP: | |
443 | method = data->rtmp_handle; | |
444 | break; | |
445 | case HWMON_TYPE_FAN: | |
446 | method = data->rfan_handle; | |
447 | break; | |
448 | default: | |
449 | return -EINVAL; | |
450 | } | |
451 | ||
452 | id.type = ACPI_TYPE_INTEGER; | |
453 | id.integer.value = sensor->id; | |
454 | ||
455 | params.count = 1; | |
456 | params.pointer = &id; | |
457 | ||
458 | status = acpi_evaluate_integer(method, NULL, ¶ms, value); | |
459 | if (status != AE_OK) { | |
460 | dev_warn(dev, "%s: ACPI exception: %s\n", __func__, | |
461 | acpi_format_exception(status)); | |
462 | return -EIO; | |
463 | } | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
18e25555 | 468 | static union acpi_object *atk_ggrp(struct atk_data *data, u16 mux) |
2c03d07a | 469 | { |
2c03d07a | 470 | struct device *dev = &data->acpi_dev->dev; |
18e25555 LT |
471 | struct acpi_buffer buf; |
472 | acpi_status ret; | |
2c03d07a | 473 | struct acpi_object_list params; |
2c03d07a | 474 | union acpi_object id; |
18e25555 | 475 | union acpi_object *pack; |
2c03d07a LT |
476 | |
477 | id.type = ACPI_TYPE_INTEGER; | |
18e25555 | 478 | id.integer.value = mux; |
2c03d07a LT |
479 | params.count = 1; |
480 | params.pointer = &id; | |
481 | ||
18e25555 LT |
482 | buf.length = ACPI_ALLOCATE_BUFFER; |
483 | ret = acpi_evaluate_object(data->enumerate_handle, NULL, ¶ms, &buf); | |
484 | if (ret != AE_OK) { | |
485 | dev_err(dev, "GGRP[%#x] ACPI exception: %s\n", mux, | |
486 | acpi_format_exception(ret)); | |
487 | return ERR_PTR(-EIO); | |
488 | } | |
489 | pack = buf.pointer; | |
490 | if (pack->type != ACPI_TYPE_PACKAGE) { | |
491 | /* Execution was successful, but the id was not found */ | |
492 | ACPI_FREE(pack); | |
493 | return ERR_PTR(-ENOENT); | |
494 | } | |
495 | ||
496 | if (pack->package.count < 1) { | |
497 | dev_err(dev, "GGRP[%#x] package is too small\n", mux); | |
498 | ACPI_FREE(pack); | |
499 | return ERR_PTR(-EIO); | |
500 | } | |
501 | return pack; | |
502 | } | |
2c03d07a | 503 | |
18e25555 LT |
504 | static union acpi_object *atk_gitm(struct atk_data *data, u64 id) |
505 | { | |
506 | struct device *dev = &data->acpi_dev->dev; | |
507 | struct atk_acpi_input_buf buf; | |
508 | union acpi_object tmp; | |
509 | struct acpi_object_list params; | |
510 | struct acpi_buffer ret; | |
511 | union acpi_object *obj; | |
512 | acpi_status status; | |
513 | ||
514 | buf.id = id; | |
515 | buf.param1 = 0; | |
516 | buf.param2 = 0; | |
517 | ||
518 | tmp.type = ACPI_TYPE_BUFFER; | |
519 | tmp.buffer.pointer = (u8 *)&buf; | |
520 | tmp.buffer.length = sizeof(buf); | |
521 | ||
522 | params.count = 1; | |
523 | params.pointer = (void *)&tmp; | |
524 | ||
525 | ret.length = ACPI_ALLOCATE_BUFFER; | |
2c03d07a LT |
526 | status = acpi_evaluate_object_typed(data->read_handle, NULL, ¶ms, |
527 | &ret, ACPI_TYPE_BUFFER); | |
528 | if (status != AE_OK) { | |
18e25555 | 529 | dev_warn(dev, "GITM[%#llx] ACPI exception: %s\n", id, |
2c03d07a | 530 | acpi_format_exception(status)); |
18e25555 | 531 | return ERR_PTR(-EIO); |
2c03d07a | 532 | } |
18e25555 LT |
533 | obj = ret.pointer; |
534 | ||
535 | /* Sanity check */ | |
536 | if (obj->buffer.length < 8) { | |
537 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
538 | obj->buffer.length); | |
539 | ACPI_FREE(obj); | |
540 | return ERR_PTR(-EIO); | |
541 | } | |
542 | return obj; | |
543 | } | |
2c03d07a | 544 | |
9e6eba61 LT |
545 | static union acpi_object *atk_sitm(struct atk_data *data, |
546 | struct atk_acpi_input_buf *buf) | |
547 | { | |
548 | struct device *dev = &data->acpi_dev->dev; | |
549 | struct acpi_object_list params; | |
550 | union acpi_object tmp; | |
551 | struct acpi_buffer ret; | |
552 | union acpi_object *obj; | |
553 | acpi_status status; | |
554 | ||
555 | tmp.type = ACPI_TYPE_BUFFER; | |
556 | tmp.buffer.pointer = (u8 *)buf; | |
557 | tmp.buffer.length = sizeof(*buf); | |
558 | ||
559 | params.count = 1; | |
560 | params.pointer = &tmp; | |
561 | ||
562 | ret.length = ACPI_ALLOCATE_BUFFER; | |
563 | status = acpi_evaluate_object_typed(data->write_handle, NULL, ¶ms, | |
564 | &ret, ACPI_TYPE_BUFFER); | |
565 | if (status != AE_OK) { | |
566 | dev_warn(dev, "SITM[%#x] ACPI exception: %s\n", buf->id, | |
567 | acpi_format_exception(status)); | |
568 | return ERR_PTR(-EIO); | |
569 | } | |
570 | obj = ret.pointer; | |
571 | ||
572 | /* Sanity check */ | |
573 | if (obj->buffer.length < 8) { | |
574 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
575 | obj->buffer.length); | |
576 | ACPI_FREE(obj); | |
577 | return ERR_PTR(-EIO); | |
578 | } | |
579 | return obj; | |
580 | } | |
581 | ||
18e25555 LT |
582 | static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value) |
583 | { | |
584 | struct atk_data *data = sensor->data; | |
585 | struct device *dev = &data->acpi_dev->dev; | |
586 | union acpi_object *obj; | |
587 | struct atk_acpi_ret_buffer *buf; | |
588 | int err = 0; | |
589 | ||
590 | obj = atk_gitm(data, sensor->id); | |
591 | if (IS_ERR(obj)) | |
592 | return PTR_ERR(obj); | |
593 | ||
594 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
595 | if (buf->flags == 0) { | |
2c03d07a LT |
596 | /* The reading is not valid, possible causes: |
597 | * - sensor failure | |
598 | * - enumeration was FUBAR (and we didn't notice) | |
599 | */ | |
18e25555 LT |
600 | dev_warn(dev, "Read failed, sensor = %#llx\n", sensor->id); |
601 | err = -EIO; | |
602 | goto out; | |
2c03d07a LT |
603 | } |
604 | ||
18e25555 LT |
605 | *value = buf->value; |
606 | out: | |
607 | ACPI_FREE(obj); | |
608 | return err; | |
2c03d07a LT |
609 | } |
610 | ||
611 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value) | |
612 | { | |
613 | int err; | |
614 | ||
615 | if (!sensor->is_valid || | |
616 | time_after(jiffies, sensor->last_updated + CACHE_TIME)) { | |
617 | if (sensor->data->old_interface) | |
618 | err = atk_read_value_old(sensor, value); | |
619 | else | |
620 | err = atk_read_value_new(sensor, value); | |
621 | ||
622 | sensor->is_valid = true; | |
623 | sensor->last_updated = jiffies; | |
624 | sensor->cached_value = *value; | |
625 | } else { | |
626 | *value = sensor->cached_value; | |
627 | err = 0; | |
628 | } | |
629 | ||
630 | return err; | |
631 | } | |
632 | ||
7e5eab11 LT |
633 | #ifdef CONFIG_DEBUG_FS |
634 | static int atk_debugfs_gitm_get(void *p, u64 *val) | |
635 | { | |
636 | struct atk_data *data = p; | |
637 | union acpi_object *ret; | |
638 | struct atk_acpi_ret_buffer *buf; | |
639 | int err = 0; | |
640 | ||
641 | if (!data->read_handle) | |
642 | return -ENODEV; | |
643 | ||
644 | if (!data->debugfs.id) | |
645 | return -EINVAL; | |
646 | ||
647 | ret = atk_gitm(data, data->debugfs.id); | |
648 | if (IS_ERR(ret)) | |
649 | return PTR_ERR(ret); | |
650 | ||
651 | buf = (struct atk_acpi_ret_buffer *)ret->buffer.pointer; | |
652 | if (buf->flags) | |
653 | *val = buf->value; | |
654 | else | |
655 | err = -EIO; | |
656 | ||
657 | return err; | |
658 | } | |
659 | ||
660 | DEFINE_SIMPLE_ATTRIBUTE(atk_debugfs_gitm, | |
661 | atk_debugfs_gitm_get, | |
662 | NULL, | |
663 | "0x%08llx\n") | |
664 | ||
665 | static int atk_acpi_print(char *buf, size_t sz, union acpi_object *obj) | |
666 | { | |
667 | int ret = 0; | |
668 | ||
669 | switch (obj->type) { | |
670 | case ACPI_TYPE_INTEGER: | |
671 | ret = snprintf(buf, sz, "0x%08llx\n", obj->integer.value); | |
672 | break; | |
673 | case ACPI_TYPE_STRING: | |
674 | ret = snprintf(buf, sz, "%s\n", obj->string.pointer); | |
675 | break; | |
676 | } | |
677 | ||
678 | return ret; | |
679 | } | |
680 | ||
681 | static void atk_pack_print(char *buf, size_t sz, union acpi_object *pack) | |
682 | { | |
683 | int ret; | |
684 | int i; | |
685 | ||
686 | for (i = 0; i < pack->package.count; i++) { | |
687 | union acpi_object *obj = &pack->package.elements[i]; | |
688 | ||
689 | ret = atk_acpi_print(buf, sz, obj); | |
690 | if (ret >= sz) | |
691 | break; | |
692 | buf += ret; | |
693 | sz -= ret; | |
694 | } | |
695 | } | |
696 | ||
697 | static int atk_debugfs_ggrp_open(struct inode *inode, struct file *file) | |
698 | { | |
699 | struct atk_data *data = inode->i_private; | |
700 | char *buf = NULL; | |
701 | union acpi_object *ret; | |
702 | u8 cls; | |
703 | int i; | |
704 | ||
705 | if (!data->enumerate_handle) | |
706 | return -ENODEV; | |
707 | if (!data->debugfs.id) | |
708 | return -EINVAL; | |
709 | ||
710 | cls = (data->debugfs.id & 0xff000000) >> 24; | |
711 | ret = atk_ggrp(data, cls); | |
712 | if (IS_ERR(ret)) | |
713 | return PTR_ERR(ret); | |
714 | ||
715 | for (i = 0; i < ret->package.count; i++) { | |
716 | union acpi_object *pack = &ret->package.elements[i]; | |
717 | union acpi_object *id; | |
718 | ||
719 | if (pack->type != ACPI_TYPE_PACKAGE) | |
720 | continue; | |
721 | if (!pack->package.count) | |
722 | continue; | |
723 | id = &pack->package.elements[0]; | |
724 | if (id->integer.value == data->debugfs.id) { | |
725 | /* Print the package */ | |
726 | buf = kzalloc(512, GFP_KERNEL); | |
727 | if (!buf) { | |
728 | ACPI_FREE(ret); | |
729 | return -ENOMEM; | |
730 | } | |
731 | atk_pack_print(buf, 512, pack); | |
732 | break; | |
733 | } | |
734 | } | |
735 | ACPI_FREE(ret); | |
736 | ||
737 | if (!buf) | |
738 | return -EINVAL; | |
739 | ||
740 | file->private_data = buf; | |
741 | ||
742 | return nonseekable_open(inode, file); | |
743 | } | |
744 | ||
745 | static ssize_t atk_debugfs_ggrp_read(struct file *file, char __user *buf, | |
746 | size_t count, loff_t *pos) | |
747 | { | |
748 | char *str = file->private_data; | |
749 | size_t len = strlen(str); | |
750 | ||
751 | return simple_read_from_buffer(buf, count, pos, str, len); | |
752 | } | |
753 | ||
754 | static int atk_debugfs_ggrp_release(struct inode *inode, struct file *file) | |
755 | { | |
756 | kfree(file->private_data); | |
757 | return 0; | |
758 | } | |
759 | ||
760 | static const struct file_operations atk_debugfs_ggrp_fops = { | |
761 | .read = atk_debugfs_ggrp_read, | |
762 | .open = atk_debugfs_ggrp_open, | |
763 | .release = atk_debugfs_ggrp_release, | |
764 | }; | |
765 | ||
766 | static void atk_debugfs_init(struct atk_data *data) | |
767 | { | |
768 | struct dentry *d; | |
769 | struct dentry *f; | |
770 | ||
771 | data->debugfs.id = 0; | |
772 | ||
773 | d = debugfs_create_dir("asus_atk0110", NULL); | |
774 | if (!d || IS_ERR(d)) | |
775 | return; | |
776 | ||
777 | f = debugfs_create_x32("id", S_IRUSR | S_IWUSR, d, &data->debugfs.id); | |
778 | if (!f || IS_ERR(f)) | |
779 | goto cleanup; | |
780 | ||
781 | f = debugfs_create_file("gitm", S_IRUSR, d, data, | |
782 | &atk_debugfs_gitm); | |
783 | if (!f || IS_ERR(f)) | |
784 | goto cleanup; | |
785 | ||
786 | f = debugfs_create_file("ggrp", S_IRUSR, d, data, | |
787 | &atk_debugfs_ggrp_fops); | |
788 | if (!f || IS_ERR(f)) | |
789 | goto cleanup; | |
790 | ||
791 | data->debugfs.root = d; | |
792 | ||
793 | return; | |
794 | cleanup: | |
795 | debugfs_remove_recursive(d); | |
796 | } | |
797 | ||
798 | static void atk_debugfs_cleanup(struct atk_data *data) | |
799 | { | |
800 | debugfs_remove_recursive(data->debugfs.root); | |
801 | } | |
802 | ||
803 | #else /* CONFIG_DEBUG_FS */ | |
804 | ||
805 | static void atk_debugfs_init(struct atk_data *data) | |
806 | { | |
807 | } | |
808 | ||
809 | static void atk_debugfs_cleanup(struct atk_data *data) | |
810 | { | |
811 | } | |
812 | #endif | |
813 | ||
2c03d07a LT |
814 | static int atk_add_sensor(struct atk_data *data, union acpi_object *obj) |
815 | { | |
816 | struct device *dev = &data->acpi_dev->dev; | |
817 | union acpi_object *flags; | |
818 | union acpi_object *name; | |
819 | union acpi_object *limit1; | |
820 | union acpi_object *limit2; | |
821 | union acpi_object *enable; | |
822 | struct atk_sensor_data *sensor; | |
823 | char const *base_name; | |
824 | char const *limit1_name; | |
825 | char const *limit2_name; | |
826 | u64 type; | |
827 | int err; | |
828 | int *num; | |
829 | int start; | |
830 | ||
831 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
832 | /* wft is this? */ | |
833 | dev_warn(dev, "Unknown type for ACPI object: (%d)\n", | |
834 | obj->type); | |
835 | return -EINVAL; | |
836 | } | |
837 | ||
838 | err = validate_hwmon_pack(data, obj); | |
839 | if (err) | |
840 | return err; | |
841 | ||
842 | /* Ok, we have a valid hwmon package */ | |
843 | type = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS)->integer.value | |
844 | & ATK_TYPE_MASK; | |
845 | ||
846 | switch (type) { | |
847 | case HWMON_TYPE_VOLT: | |
848 | base_name = "in"; | |
849 | limit1_name = "min"; | |
850 | limit2_name = "max"; | |
851 | num = &data->voltage_count; | |
852 | start = 0; | |
853 | break; | |
854 | case HWMON_TYPE_TEMP: | |
855 | base_name = "temp"; | |
856 | limit1_name = "max"; | |
857 | limit2_name = "crit"; | |
858 | num = &data->temperature_count; | |
859 | start = 1; | |
860 | break; | |
861 | case HWMON_TYPE_FAN: | |
862 | base_name = "fan"; | |
863 | limit1_name = "min"; | |
864 | limit2_name = "max"; | |
865 | num = &data->fan_count; | |
866 | start = 1; | |
867 | break; | |
868 | default: | |
869 | dev_warn(dev, "Unknown sensor type: %#llx\n", type); | |
870 | return -EINVAL; | |
871 | } | |
872 | ||
873 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
874 | if (!enable->integer.value) | |
875 | /* sensor is disabled */ | |
876 | return 0; | |
877 | ||
878 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
879 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
880 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
881 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
882 | ||
883 | sensor = kzalloc(sizeof(*sensor), GFP_KERNEL); | |
884 | if (!sensor) | |
885 | return -ENOMEM; | |
886 | ||
887 | sensor->acpi_name = kstrdup(name->string.pointer, GFP_KERNEL); | |
888 | if (!sensor->acpi_name) { | |
889 | err = -ENOMEM; | |
890 | goto out; | |
891 | } | |
892 | ||
893 | INIT_LIST_HEAD(&sensor->list); | |
894 | sensor->type = type; | |
895 | sensor->data = data; | |
896 | sensor->id = flags->integer.value; | |
897 | sensor->limit1 = limit1->integer.value; | |
8d282497 LT |
898 | if (data->old_interface) |
899 | sensor->limit2 = limit2->integer.value; | |
900 | else | |
901 | /* The upper limit is expressed as delta from lower limit */ | |
902 | sensor->limit2 = sensor->limit1 + limit2->integer.value; | |
2c03d07a LT |
903 | |
904 | snprintf(sensor->input_attr_name, ATTR_NAME_SIZE, | |
905 | "%s%d_input", base_name, start + *num); | |
906 | atk_init_attribute(&sensor->input_attr, | |
907 | sensor->input_attr_name, | |
908 | atk_input_show); | |
909 | ||
910 | snprintf(sensor->label_attr_name, ATTR_NAME_SIZE, | |
911 | "%s%d_label", base_name, start + *num); | |
912 | atk_init_attribute(&sensor->label_attr, | |
913 | sensor->label_attr_name, | |
914 | atk_label_show); | |
915 | ||
916 | snprintf(sensor->limit1_attr_name, ATTR_NAME_SIZE, | |
917 | "%s%d_%s", base_name, start + *num, limit1_name); | |
918 | atk_init_attribute(&sensor->limit1_attr, | |
919 | sensor->limit1_attr_name, | |
920 | atk_limit1_show); | |
921 | ||
922 | snprintf(sensor->limit2_attr_name, ATTR_NAME_SIZE, | |
923 | "%s%d_%s", base_name, start + *num, limit2_name); | |
924 | atk_init_attribute(&sensor->limit2_attr, | |
925 | sensor->limit2_attr_name, | |
926 | atk_limit2_show); | |
927 | ||
928 | list_add(&sensor->list, &data->sensor_list); | |
929 | (*num)++; | |
930 | ||
931 | return 1; | |
932 | out: | |
933 | kfree(sensor->acpi_name); | |
934 | kfree(sensor); | |
935 | return err; | |
936 | } | |
937 | ||
938 | static int atk_enumerate_old_hwmon(struct atk_data *data) | |
939 | { | |
940 | struct device *dev = &data->acpi_dev->dev; | |
941 | struct acpi_buffer buf; | |
942 | union acpi_object *pack; | |
943 | acpi_status status; | |
944 | int i, ret; | |
945 | int count = 0; | |
946 | ||
947 | /* Voltages */ | |
948 | buf.length = ACPI_ALLOCATE_BUFFER; | |
949 | status = acpi_evaluate_object_typed(data->atk_handle, | |
950 | METHOD_OLD_ENUM_VLT, NULL, &buf, ACPI_TYPE_PACKAGE); | |
951 | if (status != AE_OK) { | |
952 | dev_warn(dev, METHOD_OLD_ENUM_VLT ": ACPI exception: %s\n", | |
953 | acpi_format_exception(status)); | |
954 | ||
955 | return -ENODEV; | |
956 | } | |
957 | ||
958 | pack = buf.pointer; | |
959 | for (i = 1; i < pack->package.count; i++) { | |
960 | union acpi_object *obj = &pack->package.elements[i]; | |
961 | ||
962 | ret = atk_add_sensor(data, obj); | |
963 | if (ret > 0) | |
964 | count++; | |
965 | } | |
966 | ACPI_FREE(buf.pointer); | |
967 | ||
968 | /* Temperatures */ | |
969 | buf.length = ACPI_ALLOCATE_BUFFER; | |
970 | status = acpi_evaluate_object_typed(data->atk_handle, | |
971 | METHOD_OLD_ENUM_TMP, NULL, &buf, ACPI_TYPE_PACKAGE); | |
972 | if (status != AE_OK) { | |
973 | dev_warn(dev, METHOD_OLD_ENUM_TMP ": ACPI exception: %s\n", | |
974 | acpi_format_exception(status)); | |
975 | ||
976 | ret = -ENODEV; | |
977 | goto cleanup; | |
978 | } | |
979 | ||
980 | pack = buf.pointer; | |
981 | for (i = 1; i < pack->package.count; i++) { | |
982 | union acpi_object *obj = &pack->package.elements[i]; | |
983 | ||
984 | ret = atk_add_sensor(data, obj); | |
985 | if (ret > 0) | |
986 | count++; | |
987 | } | |
988 | ACPI_FREE(buf.pointer); | |
989 | ||
990 | /* Fans */ | |
991 | buf.length = ACPI_ALLOCATE_BUFFER; | |
992 | status = acpi_evaluate_object_typed(data->atk_handle, | |
993 | METHOD_OLD_ENUM_FAN, NULL, &buf, ACPI_TYPE_PACKAGE); | |
994 | if (status != AE_OK) { | |
995 | dev_warn(dev, METHOD_OLD_ENUM_FAN ": ACPI exception: %s\n", | |
996 | acpi_format_exception(status)); | |
997 | ||
998 | ret = -ENODEV; | |
999 | goto cleanup; | |
1000 | } | |
1001 | ||
1002 | pack = buf.pointer; | |
1003 | for (i = 1; i < pack->package.count; i++) { | |
1004 | union acpi_object *obj = &pack->package.elements[i]; | |
1005 | ||
1006 | ret = atk_add_sensor(data, obj); | |
1007 | if (ret > 0) | |
1008 | count++; | |
1009 | } | |
1010 | ACPI_FREE(buf.pointer); | |
1011 | ||
1012 | return count; | |
1013 | cleanup: | |
1014 | atk_free_sensors(data); | |
1015 | return ret; | |
1016 | } | |
1017 | ||
9e6eba61 LT |
1018 | static int atk_ec_present(struct atk_data *data) |
1019 | { | |
1020 | struct device *dev = &data->acpi_dev->dev; | |
1021 | union acpi_object *pack; | |
1022 | union acpi_object *ec; | |
1023 | int ret; | |
1024 | int i; | |
1025 | ||
1026 | pack = atk_ggrp(data, ATK_MUX_MGMT); | |
1027 | if (IS_ERR(pack)) { | |
1028 | if (PTR_ERR(pack) == -ENOENT) { | |
1029 | /* The MGMT class does not exists - that's ok */ | |
1030 | dev_dbg(dev, "Class %#llx not found\n", ATK_MUX_MGMT); | |
1031 | return 0; | |
1032 | } | |
1033 | return PTR_ERR(pack); | |
1034 | } | |
1035 | ||
1036 | /* Search the EC */ | |
1037 | ec = NULL; | |
1038 | for (i = 0; i < pack->package.count; i++) { | |
1039 | union acpi_object *obj = &pack->package.elements[i]; | |
1040 | union acpi_object *id; | |
1041 | ||
1042 | if (obj->type != ACPI_TYPE_PACKAGE) | |
1043 | continue; | |
1044 | ||
1045 | id = &obj->package.elements[0]; | |
1046 | if (id->type != ACPI_TYPE_INTEGER) | |
1047 | continue; | |
1048 | ||
1049 | if (id->integer.value == ATK_EC_ID) { | |
1050 | ec = obj; | |
1051 | break; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | ret = (ec != NULL); | |
1056 | if (!ret) | |
1057 | /* The system has no EC */ | |
1058 | dev_dbg(dev, "EC not found\n"); | |
1059 | ||
1060 | ACPI_FREE(pack); | |
1061 | return ret; | |
1062 | } | |
1063 | ||
1064 | static int atk_ec_enabled(struct atk_data *data) | |
1065 | { | |
1066 | struct device *dev = &data->acpi_dev->dev; | |
1067 | union acpi_object *obj; | |
1068 | struct atk_acpi_ret_buffer *buf; | |
1069 | int err; | |
1070 | ||
1071 | obj = atk_gitm(data, ATK_EC_ID); | |
1072 | if (IS_ERR(obj)) { | |
1073 | dev_err(dev, "Unable to query EC status\n"); | |
1074 | return PTR_ERR(obj); | |
1075 | } | |
1076 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1077 | ||
1078 | if (buf->flags == 0) { | |
1079 | dev_err(dev, "Unable to query EC status\n"); | |
1080 | err = -EIO; | |
1081 | } else { | |
1082 | err = (buf->value != 0); | |
1083 | dev_dbg(dev, "EC is %sabled\n", | |
1084 | err ? "en" : "dis"); | |
1085 | } | |
1086 | ||
1087 | ACPI_FREE(obj); | |
1088 | return err; | |
1089 | } | |
1090 | ||
1091 | static int atk_ec_ctl(struct atk_data *data, int enable) | |
1092 | { | |
1093 | struct device *dev = &data->acpi_dev->dev; | |
1094 | union acpi_object *obj; | |
1095 | struct atk_acpi_input_buf sitm; | |
1096 | struct atk_acpi_ret_buffer *ec_ret; | |
1097 | int err = 0; | |
1098 | ||
1099 | sitm.id = ATK_EC_ID; | |
1100 | sitm.param1 = enable; | |
1101 | sitm.param2 = 0; | |
1102 | ||
1103 | obj = atk_sitm(data, &sitm); | |
1104 | if (IS_ERR(obj)) { | |
1105 | dev_err(dev, "Failed to %sable the EC\n", | |
1106 | enable ? "en" : "dis"); | |
1107 | return PTR_ERR(obj); | |
1108 | } | |
1109 | ec_ret = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1110 | if (ec_ret->flags == 0) { | |
1111 | dev_err(dev, "Failed to %sable the EC\n", | |
1112 | enable ? "en" : "dis"); | |
1113 | err = -EIO; | |
1114 | } else { | |
1115 | dev_info(dev, "EC %sabled\n", | |
1116 | enable ? "en" : "dis"); | |
1117 | } | |
1118 | ||
1119 | ACPI_FREE(obj); | |
1120 | return err; | |
1121 | } | |
1122 | ||
2c03d07a LT |
1123 | static int atk_enumerate_new_hwmon(struct atk_data *data) |
1124 | { | |
1125 | struct device *dev = &data->acpi_dev->dev; | |
2c03d07a LT |
1126 | union acpi_object *pack; |
1127 | int err; | |
1128 | int i; | |
1129 | ||
9e6eba61 LT |
1130 | err = atk_ec_present(data); |
1131 | if (err < 0) | |
1132 | return err; | |
1133 | if (err) { | |
1134 | err = atk_ec_enabled(data); | |
1135 | if (err < 0) | |
1136 | return err; | |
1137 | /* If the EC was disabled we will disable it again on unload */ | |
1138 | data->disable_ec = err; | |
1139 | ||
1140 | err = atk_ec_ctl(data, 1); | |
1141 | if (err) { | |
1142 | data->disable_ec = false; | |
1143 | return err; | |
1144 | } | |
1145 | } | |
1146 | ||
2c03d07a LT |
1147 | dev_dbg(dev, "Enumerating hwmon sensors\n"); |
1148 | ||
18e25555 LT |
1149 | pack = atk_ggrp(data, ATK_MUX_HWMON); |
1150 | if (IS_ERR(pack)) | |
1151 | return PTR_ERR(pack); | |
2c03d07a LT |
1152 | |
1153 | for (i = 0; i < pack->package.count; i++) { | |
1154 | union acpi_object *obj = &pack->package.elements[i]; | |
1155 | ||
1156 | atk_add_sensor(data, obj); | |
1157 | } | |
1158 | ||
1159 | err = data->voltage_count + data->temperature_count + data->fan_count; | |
1160 | ||
18e25555 | 1161 | ACPI_FREE(pack); |
2c03d07a LT |
1162 | return err; |
1163 | } | |
1164 | ||
1165 | static int atk_create_files(struct atk_data *data) | |
1166 | { | |
1167 | struct atk_sensor_data *s; | |
1168 | int err; | |
1169 | ||
1170 | list_for_each_entry(s, &data->sensor_list, list) { | |
1171 | err = device_create_file(data->hwmon_dev, &s->input_attr); | |
1172 | if (err) | |
1173 | return err; | |
1174 | err = device_create_file(data->hwmon_dev, &s->label_attr); | |
1175 | if (err) | |
1176 | return err; | |
1177 | err = device_create_file(data->hwmon_dev, &s->limit1_attr); | |
1178 | if (err) | |
1179 | return err; | |
1180 | err = device_create_file(data->hwmon_dev, &s->limit2_attr); | |
1181 | if (err) | |
1182 | return err; | |
1183 | } | |
1184 | ||
1185 | err = device_create_file(data->hwmon_dev, &atk_name_attr); | |
1186 | ||
1187 | return err; | |
1188 | } | |
1189 | ||
1190 | static void atk_remove_files(struct atk_data *data) | |
1191 | { | |
1192 | struct atk_sensor_data *s; | |
1193 | ||
1194 | list_for_each_entry(s, &data->sensor_list, list) { | |
1195 | device_remove_file(data->hwmon_dev, &s->input_attr); | |
1196 | device_remove_file(data->hwmon_dev, &s->label_attr); | |
1197 | device_remove_file(data->hwmon_dev, &s->limit1_attr); | |
1198 | device_remove_file(data->hwmon_dev, &s->limit2_attr); | |
1199 | } | |
1200 | device_remove_file(data->hwmon_dev, &atk_name_attr); | |
1201 | } | |
1202 | ||
1203 | static void atk_free_sensors(struct atk_data *data) | |
1204 | { | |
1205 | struct list_head *head = &data->sensor_list; | |
1206 | struct atk_sensor_data *s, *tmp; | |
1207 | ||
1208 | list_for_each_entry_safe(s, tmp, head, list) { | |
1209 | kfree(s->acpi_name); | |
1210 | kfree(s); | |
1211 | } | |
1212 | } | |
1213 | ||
1214 | static int atk_register_hwmon(struct atk_data *data) | |
1215 | { | |
1216 | struct device *dev = &data->acpi_dev->dev; | |
1217 | int err; | |
1218 | ||
1219 | dev_dbg(dev, "registering hwmon device\n"); | |
1220 | data->hwmon_dev = hwmon_device_register(dev); | |
1221 | if (IS_ERR(data->hwmon_dev)) | |
1222 | return PTR_ERR(data->hwmon_dev); | |
1223 | ||
1224 | dev_dbg(dev, "populating sysfs directory\n"); | |
1225 | err = atk_create_files(data); | |
1226 | if (err) | |
1227 | goto remove; | |
1228 | ||
1229 | return 0; | |
1230 | remove: | |
1231 | /* Cleanup the registered files */ | |
1232 | atk_remove_files(data); | |
1233 | hwmon_device_unregister(data->hwmon_dev); | |
1234 | return err; | |
1235 | } | |
1236 | ||
8ba406be | 1237 | static int atk_probe_if(struct atk_data *data) |
2c03d07a LT |
1238 | { |
1239 | struct device *dev = &data->acpi_dev->dev; | |
1240 | acpi_handle ret; | |
1241 | acpi_status status; | |
8ba406be | 1242 | int err = 0; |
2c03d07a LT |
1243 | |
1244 | /* RTMP: read temperature */ | |
1245 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_TMP, &ret); | |
8ba406be LT |
1246 | if (ACPI_SUCCESS(status)) |
1247 | data->rtmp_handle = ret; | |
1248 | else | |
2c03d07a LT |
1249 | dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n", |
1250 | acpi_format_exception(status)); | |
2c03d07a LT |
1251 | |
1252 | /* RVLT: read voltage */ | |
1253 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_VLT, &ret); | |
8ba406be LT |
1254 | if (ACPI_SUCCESS(status)) |
1255 | data->rvlt_handle = ret; | |
1256 | else | |
2c03d07a LT |
1257 | dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n", |
1258 | acpi_format_exception(status)); | |
2c03d07a LT |
1259 | |
1260 | /* RFAN: read fan status */ | |
1261 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_FAN, &ret); | |
8ba406be LT |
1262 | if (ACPI_SUCCESS(status)) |
1263 | data->rfan_handle = ret; | |
1264 | else | |
2c03d07a LT |
1265 | dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n", |
1266 | acpi_format_exception(status)); | |
2c03d07a LT |
1267 | |
1268 | /* Enumeration */ | |
1269 | status = acpi_get_handle(data->atk_handle, METHOD_ENUMERATE, &ret); | |
8ba406be LT |
1270 | if (ACPI_SUCCESS(status)) |
1271 | data->enumerate_handle = ret; | |
1272 | else | |
2c03d07a LT |
1273 | dev_dbg(dev, "method " METHOD_ENUMERATE " not found: %s\n", |
1274 | acpi_format_exception(status)); | |
2c03d07a LT |
1275 | |
1276 | /* De-multiplexer (read) */ | |
1277 | status = acpi_get_handle(data->atk_handle, METHOD_READ, &ret); | |
8ba406be LT |
1278 | if (ACPI_SUCCESS(status)) |
1279 | data->read_handle = ret; | |
1280 | else | |
2c03d07a LT |
1281 | dev_dbg(dev, "method " METHOD_READ " not found: %s\n", |
1282 | acpi_format_exception(status)); | |
2c03d07a | 1283 | |
9e6eba61 LT |
1284 | /* De-multiplexer (write) */ |
1285 | status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret); | |
8ba406be LT |
1286 | if (ACPI_SUCCESS(status)) |
1287 | data->write_handle = ret; | |
1288 | else | |
1289 | dev_dbg(dev, "method " METHOD_WRITE " not found: %s\n", | |
9e6eba61 | 1290 | acpi_format_exception(status)); |
9e6eba61 | 1291 | |
8ba406be LT |
1292 | /* Check for hwmon methods: first check "old" style methods; note that |
1293 | * both may be present: in this case we stick to the old interface; | |
1294 | * analysis of multiple DSDTs indicates that when both interfaces | |
1295 | * are present the new one (GGRP/GITM) is not functional. | |
1296 | */ | |
1297 | if (data->rtmp_handle && data->rvlt_handle && data->rfan_handle) | |
1298 | data->old_interface = true; | |
1299 | else if (data->enumerate_handle && data->read_handle && | |
1300 | data->write_handle) | |
1301 | data->old_interface = false; | |
1302 | else | |
1303 | err = -ENODEV; | |
1304 | ||
1305 | return err; | |
2c03d07a LT |
1306 | } |
1307 | ||
1308 | static int atk_add(struct acpi_device *device) | |
1309 | { | |
1310 | acpi_status ret; | |
1311 | int err; | |
1312 | struct acpi_buffer buf; | |
1313 | union acpi_object *obj; | |
1314 | struct atk_data *data; | |
1315 | ||
1316 | dev_dbg(&device->dev, "adding...\n"); | |
1317 | ||
1318 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
1319 | if (!data) | |
1320 | return -ENOMEM; | |
1321 | ||
1322 | data->acpi_dev = device; | |
1323 | data->atk_handle = device->handle; | |
1324 | INIT_LIST_HEAD(&data->sensor_list); | |
9e6eba61 | 1325 | data->disable_ec = false; |
2c03d07a LT |
1326 | |
1327 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1328 | ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL, | |
1329 | &buf, ACPI_TYPE_PACKAGE); | |
1330 | if (ret != AE_OK) { | |
1331 | dev_dbg(&device->dev, "atk: method MBIF not found\n"); | |
1332 | err = -ENODEV; | |
1333 | goto out; | |
1334 | } | |
1335 | ||
1336 | obj = buf.pointer; | |
1337 | if (obj->package.count >= 2 && | |
1338 | obj->package.elements[1].type == ACPI_TYPE_STRING) { | |
1339 | dev_dbg(&device->dev, "board ID = %s\n", | |
1340 | obj->package.elements[1].string.pointer); | |
1341 | } | |
1342 | ACPI_FREE(buf.pointer); | |
1343 | ||
8ba406be LT |
1344 | err = atk_probe_if(data); |
1345 | if (err) { | |
1346 | dev_err(&device->dev, "No usable hwmon interface detected\n"); | |
1347 | goto out; | |
2c03d07a LT |
1348 | } |
1349 | ||
8ba406be LT |
1350 | if (data->old_interface) { |
1351 | dev_dbg(&device->dev, "Using old hwmon interface\n"); | |
2c03d07a | 1352 | err = atk_enumerate_old_hwmon(data); |
8ba406be LT |
1353 | } else { |
1354 | dev_dbg(&device->dev, "Using new hwmon interface\n"); | |
2c03d07a | 1355 | err = atk_enumerate_new_hwmon(data); |
8ba406be | 1356 | } |
2c03d07a LT |
1357 | if (err < 0) |
1358 | goto out; | |
1359 | if (err == 0) { | |
1360 | dev_info(&device->dev, | |
1361 | "No usable sensor detected, bailing out\n"); | |
1362 | err = -ENODEV; | |
1363 | goto out; | |
1364 | } | |
1365 | ||
1366 | err = atk_register_hwmon(data); | |
1367 | if (err) | |
1368 | goto cleanup; | |
1369 | ||
7e5eab11 LT |
1370 | atk_debugfs_init(data); |
1371 | ||
2c03d07a LT |
1372 | device->driver_data = data; |
1373 | return 0; | |
1374 | cleanup: | |
1375 | atk_free_sensors(data); | |
1376 | out: | |
9e6eba61 LT |
1377 | if (data->disable_ec) |
1378 | atk_ec_ctl(data, 0); | |
2c03d07a LT |
1379 | kfree(data); |
1380 | return err; | |
1381 | } | |
1382 | ||
1383 | static int atk_remove(struct acpi_device *device, int type) | |
1384 | { | |
1385 | struct atk_data *data = device->driver_data; | |
1386 | dev_dbg(&device->dev, "removing...\n"); | |
1387 | ||
1388 | device->driver_data = NULL; | |
1389 | ||
7e5eab11 LT |
1390 | atk_debugfs_cleanup(data); |
1391 | ||
2c03d07a LT |
1392 | atk_remove_files(data); |
1393 | atk_free_sensors(data); | |
1394 | hwmon_device_unregister(data->hwmon_dev); | |
1395 | ||
9e6eba61 LT |
1396 | if (data->disable_ec) { |
1397 | if (atk_ec_ctl(data, 0)) | |
1398 | dev_err(&device->dev, "Failed to disable EC\n"); | |
1399 | } | |
1400 | ||
2c03d07a LT |
1401 | kfree(data); |
1402 | ||
1403 | return 0; | |
1404 | } | |
1405 | ||
1406 | static int __init atk0110_init(void) | |
1407 | { | |
1408 | int ret; | |
1409 | ||
1410 | ret = acpi_bus_register_driver(&atk_driver); | |
1411 | if (ret) | |
1412 | pr_info("atk: acpi_bus_register_driver failed: %d\n", ret); | |
1413 | ||
1414 | return ret; | |
1415 | } | |
1416 | ||
1417 | static void __exit atk0110_exit(void) | |
1418 | { | |
1419 | acpi_bus_unregister_driver(&atk_driver); | |
1420 | } | |
1421 | ||
1422 | module_init(atk0110_init); | |
1423 | module_exit(atk0110_exit); | |
1424 | ||
1425 | MODULE_LICENSE("GPL"); |