Commit | Line | Data |
---|---|---|
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> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
2c03d07a LT |
14 | |
15 | #include <acpi/acpi.h> | |
16 | #include <acpi/acpixf.h> | |
17 | #include <acpi/acpi_drivers.h> | |
18 | #include <acpi/acpi_bus.h> | |
19 | ||
20 | ||
21 | #define ATK_HID "ATK0110" | |
22 | ||
23 | /* Minimum time between readings, enforced in order to avoid | |
24 | * hogging the CPU. | |
25 | */ | |
26 | #define CACHE_TIME HZ | |
27 | ||
28 | #define BOARD_ID "MBIF" | |
29 | #define METHOD_ENUMERATE "GGRP" | |
30 | #define METHOD_READ "GITM" | |
31 | #define METHOD_WRITE "SITM" | |
32 | #define METHOD_OLD_READ_TMP "RTMP" | |
33 | #define METHOD_OLD_READ_VLT "RVLT" | |
34 | #define METHOD_OLD_READ_FAN "RFAN" | |
35 | #define METHOD_OLD_ENUM_TMP "TSIF" | |
36 | #define METHOD_OLD_ENUM_VLT "VSIF" | |
37 | #define METHOD_OLD_ENUM_FAN "FSIF" | |
38 | ||
39 | #define ATK_MUX_HWMON 0x00000006ULL | |
9e6eba61 | 40 | #define ATK_MUX_MGMT 0x00000011ULL |
2c03d07a LT |
41 | |
42 | #define ATK_CLASS_MASK 0xff000000ULL | |
43 | #define ATK_CLASS_FREQ_CTL 0x03000000ULL | |
44 | #define ATK_CLASS_FAN_CTL 0x04000000ULL | |
45 | #define ATK_CLASS_HWMON 0x06000000ULL | |
9e6eba61 | 46 | #define ATK_CLASS_MGMT 0x11000000ULL |
2c03d07a LT |
47 | |
48 | #define ATK_TYPE_MASK 0x00ff0000ULL | |
49 | #define HWMON_TYPE_VOLT 0x00020000ULL | |
50 | #define HWMON_TYPE_TEMP 0x00030000ULL | |
51 | #define HWMON_TYPE_FAN 0x00040000ULL | |
52 | ||
9e6eba61 LT |
53 | #define ATK_ELEMENT_ID_MASK 0x0000ffffULL |
54 | ||
55 | #define ATK_EC_ID 0x11060004ULL | |
2c03d07a LT |
56 | |
57 | enum atk_pack_member { | |
58 | HWMON_PACK_FLAGS, | |
59 | HWMON_PACK_NAME, | |
60 | HWMON_PACK_LIMIT1, | |
61 | HWMON_PACK_LIMIT2, | |
62 | HWMON_PACK_ENABLE | |
63 | }; | |
64 | ||
65 | /* New package format */ | |
66 | #define _HWMON_NEW_PACK_SIZE 7 | |
67 | #define _HWMON_NEW_PACK_FLAGS 0 | |
68 | #define _HWMON_NEW_PACK_NAME 1 | |
69 | #define _HWMON_NEW_PACK_UNK1 2 | |
70 | #define _HWMON_NEW_PACK_UNK2 3 | |
71 | #define _HWMON_NEW_PACK_LIMIT1 4 | |
72 | #define _HWMON_NEW_PACK_LIMIT2 5 | |
73 | #define _HWMON_NEW_PACK_ENABLE 6 | |
74 | ||
75 | /* Old package format */ | |
76 | #define _HWMON_OLD_PACK_SIZE 5 | |
77 | #define _HWMON_OLD_PACK_FLAGS 0 | |
78 | #define _HWMON_OLD_PACK_NAME 1 | |
79 | #define _HWMON_OLD_PACK_LIMIT1 2 | |
80 | #define _HWMON_OLD_PACK_LIMIT2 3 | |
81 | #define _HWMON_OLD_PACK_ENABLE 4 | |
82 | ||
83 | ||
84 | struct atk_data { | |
85 | struct device *hwmon_dev; | |
86 | acpi_handle atk_handle; | |
87 | struct acpi_device *acpi_dev; | |
88 | ||
89 | bool old_interface; | |
90 | ||
91 | /* old interface */ | |
92 | acpi_handle rtmp_handle; | |
93 | acpi_handle rvlt_handle; | |
94 | acpi_handle rfan_handle; | |
95 | /* new inteface */ | |
96 | acpi_handle enumerate_handle; | |
97 | acpi_handle read_handle; | |
9e6eba61 LT |
98 | acpi_handle write_handle; |
99 | ||
100 | bool disable_ec; | |
2c03d07a LT |
101 | |
102 | int voltage_count; | |
103 | int temperature_count; | |
104 | int fan_count; | |
105 | struct list_head sensor_list; | |
7e5eab11 LT |
106 | |
107 | struct { | |
108 | struct dentry *root; | |
109 | u32 id; | |
110 | } debugfs; | |
2c03d07a LT |
111 | }; |
112 | ||
113 | ||
114 | typedef ssize_t (*sysfs_show_func)(struct device *dev, | |
115 | struct device_attribute *attr, char *buf); | |
116 | ||
117 | static const struct acpi_device_id atk_ids[] = { | |
118 | {ATK_HID, 0}, | |
119 | {"", 0}, | |
120 | }; | |
121 | MODULE_DEVICE_TABLE(acpi, atk_ids); | |
122 | ||
123 | #define ATTR_NAME_SIZE 16 /* Worst case is "tempN_input" */ | |
124 | ||
125 | struct atk_sensor_data { | |
126 | struct list_head list; | |
127 | struct atk_data *data; | |
128 | struct device_attribute label_attr; | |
129 | struct device_attribute input_attr; | |
130 | struct device_attribute limit1_attr; | |
131 | struct device_attribute limit2_attr; | |
132 | char label_attr_name[ATTR_NAME_SIZE]; | |
133 | char input_attr_name[ATTR_NAME_SIZE]; | |
134 | char limit1_attr_name[ATTR_NAME_SIZE]; | |
135 | char limit2_attr_name[ATTR_NAME_SIZE]; | |
136 | u64 id; | |
137 | u64 type; | |
138 | u64 limit1; | |
139 | u64 limit2; | |
140 | u64 cached_value; | |
141 | unsigned long last_updated; /* in jiffies */ | |
142 | bool is_valid; | |
143 | char const *acpi_name; | |
144 | }; | |
145 | ||
18e25555 LT |
146 | /* Return buffer format: |
147 | * [0-3] "value" is valid flag | |
148 | * [4-7] value | |
149 | * [8- ] unknown stuff on newer mobos | |
150 | */ | |
151 | struct atk_acpi_ret_buffer { | |
152 | u32 flags; | |
153 | u32 value; | |
154 | u8 data[]; | |
155 | }; | |
156 | ||
157 | /* Input buffer used for GITM and SITM methods */ | |
158 | struct atk_acpi_input_buf { | |
159 | u32 id; | |
160 | u32 param1; | |
161 | u32 param2; | |
2c03d07a LT |
162 | }; |
163 | ||
164 | static int atk_add(struct acpi_device *device); | |
165 | static int atk_remove(struct acpi_device *device, int type); | |
166 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj); | |
167 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value); | |
168 | static void atk_free_sensors(struct atk_data *data); | |
169 | ||
170 | static struct acpi_driver atk_driver = { | |
171 | .name = ATK_HID, | |
172 | .class = "hwmon", | |
173 | .ids = atk_ids, | |
174 | .ops = { | |
175 | .add = atk_add, | |
176 | .remove = atk_remove, | |
177 | }, | |
178 | }; | |
179 | ||
180 | #define input_to_atk_sensor(attr) \ | |
181 | container_of(attr, struct atk_sensor_data, input_attr) | |
182 | ||
183 | #define label_to_atk_sensor(attr) \ | |
184 | container_of(attr, struct atk_sensor_data, label_attr) | |
185 | ||
186 | #define limit1_to_atk_sensor(attr) \ | |
187 | container_of(attr, struct atk_sensor_data, limit1_attr) | |
188 | ||
189 | #define limit2_to_atk_sensor(attr) \ | |
190 | container_of(attr, struct atk_sensor_data, limit2_attr) | |
191 | ||
192 | static ssize_t atk_input_show(struct device *dev, | |
193 | struct device_attribute *attr, char *buf) | |
194 | { | |
195 | struct atk_sensor_data *s = input_to_atk_sensor(attr); | |
196 | u64 value; | |
197 | int err; | |
198 | ||
199 | err = atk_read_value(s, &value); | |
200 | if (err) | |
201 | return err; | |
202 | ||
203 | if (s->type == HWMON_TYPE_TEMP) | |
204 | /* ACPI returns decidegree */ | |
205 | value *= 100; | |
206 | ||
207 | return sprintf(buf, "%llu\n", value); | |
208 | } | |
209 | ||
210 | static ssize_t atk_label_show(struct device *dev, | |
211 | struct device_attribute *attr, char *buf) | |
212 | { | |
213 | struct atk_sensor_data *s = label_to_atk_sensor(attr); | |
214 | ||
215 | return sprintf(buf, "%s\n", s->acpi_name); | |
216 | } | |
217 | ||
218 | static ssize_t atk_limit1_show(struct device *dev, | |
219 | struct device_attribute *attr, char *buf) | |
220 | { | |
221 | struct atk_sensor_data *s = limit1_to_atk_sensor(attr); | |
222 | u64 value = s->limit1; | |
223 | ||
224 | if (s->type == HWMON_TYPE_TEMP) | |
225 | value *= 100; | |
226 | ||
227 | return sprintf(buf, "%lld\n", value); | |
228 | } | |
229 | ||
230 | static ssize_t atk_limit2_show(struct device *dev, | |
231 | struct device_attribute *attr, char *buf) | |
232 | { | |
233 | struct atk_sensor_data *s = limit2_to_atk_sensor(attr); | |
234 | u64 value = s->limit2; | |
235 | ||
236 | if (s->type == HWMON_TYPE_TEMP) | |
237 | value *= 100; | |
238 | ||
239 | return sprintf(buf, "%lld\n", value); | |
240 | } | |
241 | ||
242 | static ssize_t atk_name_show(struct device *dev, | |
243 | struct device_attribute *attr, char *buf) | |
244 | { | |
245 | return sprintf(buf, "atk0110\n"); | |
246 | } | |
247 | static struct device_attribute atk_name_attr = | |
248 | __ATTR(name, 0444, atk_name_show, NULL); | |
249 | ||
250 | static void atk_init_attribute(struct device_attribute *attr, char *name, | |
251 | sysfs_show_func show) | |
252 | { | |
253 | attr->attr.name = name; | |
254 | attr->attr.mode = 0444; | |
255 | attr->show = show; | |
256 | attr->store = NULL; | |
257 | } | |
258 | ||
259 | ||
260 | static union acpi_object *atk_get_pack_member(struct atk_data *data, | |
261 | union acpi_object *pack, | |
262 | enum atk_pack_member m) | |
263 | { | |
264 | bool old_if = data->old_interface; | |
265 | int offset; | |
266 | ||
267 | switch (m) { | |
268 | case HWMON_PACK_FLAGS: | |
269 | offset = old_if ? _HWMON_OLD_PACK_FLAGS : _HWMON_NEW_PACK_FLAGS; | |
270 | break; | |
271 | case HWMON_PACK_NAME: | |
272 | offset = old_if ? _HWMON_OLD_PACK_NAME : _HWMON_NEW_PACK_NAME; | |
273 | break; | |
274 | case HWMON_PACK_LIMIT1: | |
275 | offset = old_if ? _HWMON_OLD_PACK_LIMIT1 : | |
276 | _HWMON_NEW_PACK_LIMIT1; | |
277 | break; | |
278 | case HWMON_PACK_LIMIT2: | |
279 | offset = old_if ? _HWMON_OLD_PACK_LIMIT2 : | |
280 | _HWMON_NEW_PACK_LIMIT2; | |
281 | break; | |
282 | case HWMON_PACK_ENABLE: | |
283 | offset = old_if ? _HWMON_OLD_PACK_ENABLE : | |
284 | _HWMON_NEW_PACK_ENABLE; | |
285 | break; | |
286 | default: | |
287 | return NULL; | |
288 | } | |
289 | ||
290 | return &pack->package.elements[offset]; | |
291 | } | |
292 | ||
293 | ||
294 | /* New package format is: | |
295 | * - flag (int) | |
296 | * class - used for de-muxing the request to the correct GITn | |
297 | * type (volt, temp, fan) | |
298 | * sensor id | | |
299 | * sensor id - used for de-muxing the request _inside_ the GITn | |
300 | * - name (str) | |
301 | * - unknown (int) | |
302 | * - unknown (int) | |
303 | * - limit1 (int) | |
304 | * - limit2 (int) | |
305 | * - enable (int) | |
306 | * | |
307 | * The old package has the same format but it's missing the two unknown fields. | |
308 | */ | |
309 | static int validate_hwmon_pack(struct atk_data *data, union acpi_object *obj) | |
310 | { | |
311 | struct device *dev = &data->acpi_dev->dev; | |
312 | union acpi_object *tmp; | |
313 | bool old_if = data->old_interface; | |
314 | int const expected_size = old_if ? _HWMON_OLD_PACK_SIZE : | |
315 | _HWMON_NEW_PACK_SIZE; | |
316 | ||
317 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
318 | dev_warn(dev, "Invalid type: %d\n", obj->type); | |
319 | return -EINVAL; | |
320 | } | |
321 | ||
322 | if (obj->package.count != expected_size) { | |
323 | dev_warn(dev, "Invalid package size: %d, expected: %d\n", | |
324 | obj->package.count, expected_size); | |
325 | return -EINVAL; | |
326 | } | |
327 | ||
328 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
329 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
330 | dev_warn(dev, "Invalid type (flag): %d\n", tmp->type); | |
331 | return -EINVAL; | |
332 | } | |
333 | ||
334 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
335 | if (tmp->type != ACPI_TYPE_STRING) { | |
336 | dev_warn(dev, "Invalid type (name): %d\n", tmp->type); | |
337 | return -EINVAL; | |
338 | } | |
339 | ||
340 | /* Don't check... we don't know what they're useful for anyway */ | |
341 | #if 0 | |
342 | tmp = &obj->package.elements[HWMON_PACK_UNK1]; | |
343 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
344 | dev_warn(dev, "Invalid type (unk1): %d\n", tmp->type); | |
345 | return -EINVAL; | |
346 | } | |
347 | ||
348 | tmp = &obj->package.elements[HWMON_PACK_UNK2]; | |
349 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
350 | dev_warn(dev, "Invalid type (unk2): %d\n", tmp->type); | |
351 | return -EINVAL; | |
352 | } | |
353 | #endif | |
354 | ||
355 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
356 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
357 | dev_warn(dev, "Invalid type (limit1): %d\n", tmp->type); | |
358 | return -EINVAL; | |
359 | } | |
360 | ||
361 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
362 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
363 | dev_warn(dev, "Invalid type (limit2): %d\n", tmp->type); | |
364 | return -EINVAL; | |
365 | } | |
366 | ||
367 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
368 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
369 | dev_warn(dev, "Invalid type (enable): %d\n", tmp->type); | |
370 | return -EINVAL; | |
371 | } | |
372 | ||
373 | atk_print_sensor(data, obj); | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
b9008708 | 378 | #ifdef DEBUG |
2c03d07a LT |
379 | static char const *atk_sensor_type(union acpi_object *flags) |
380 | { | |
381 | u64 type = flags->integer.value & ATK_TYPE_MASK; | |
382 | char const *what; | |
383 | ||
384 | switch (type) { | |
385 | case HWMON_TYPE_VOLT: | |
386 | what = "voltage"; | |
387 | break; | |
388 | case HWMON_TYPE_TEMP: | |
389 | what = "temperature"; | |
390 | break; | |
391 | case HWMON_TYPE_FAN: | |
392 | what = "fan"; | |
393 | break; | |
394 | default: | |
395 | what = "unknown"; | |
396 | break; | |
397 | } | |
398 | ||
399 | return what; | |
400 | } | |
b9008708 | 401 | #endif |
2c03d07a LT |
402 | |
403 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj) | |
404 | { | |
405 | #ifdef DEBUG | |
406 | struct device *dev = &data->acpi_dev->dev; | |
407 | union acpi_object *flags; | |
408 | union acpi_object *name; | |
409 | union acpi_object *limit1; | |
410 | union acpi_object *limit2; | |
411 | union acpi_object *enable; | |
412 | char const *what; | |
413 | ||
414 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
415 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
416 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
417 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
418 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
419 | ||
420 | what = atk_sensor_type(flags); | |
421 | ||
422 | dev_dbg(dev, "%s: %#llx %s [%llu-%llu] %s\n", what, | |
423 | flags->integer.value, | |
424 | name->string.pointer, | |
425 | limit1->integer.value, limit2->integer.value, | |
426 | enable->integer.value ? "enabled" : "disabled"); | |
427 | #endif | |
428 | } | |
429 | ||
430 | static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value) | |
431 | { | |
432 | struct atk_data *data = sensor->data; | |
433 | struct device *dev = &data->acpi_dev->dev; | |
434 | struct acpi_object_list params; | |
435 | union acpi_object id; | |
436 | acpi_status status; | |
437 | acpi_handle method; | |
438 | ||
439 | switch (sensor->type) { | |
440 | case HWMON_TYPE_VOLT: | |
441 | method = data->rvlt_handle; | |
442 | break; | |
443 | case HWMON_TYPE_TEMP: | |
444 | method = data->rtmp_handle; | |
445 | break; | |
446 | case HWMON_TYPE_FAN: | |
447 | method = data->rfan_handle; | |
448 | break; | |
449 | default: | |
450 | return -EINVAL; | |
451 | } | |
452 | ||
453 | id.type = ACPI_TYPE_INTEGER; | |
454 | id.integer.value = sensor->id; | |
455 | ||
456 | params.count = 1; | |
457 | params.pointer = &id; | |
458 | ||
459 | status = acpi_evaluate_integer(method, NULL, ¶ms, value); | |
460 | if (status != AE_OK) { | |
461 | dev_warn(dev, "%s: ACPI exception: %s\n", __func__, | |
462 | acpi_format_exception(status)); | |
463 | return -EIO; | |
464 | } | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
18e25555 | 469 | static union acpi_object *atk_ggrp(struct atk_data *data, u16 mux) |
2c03d07a | 470 | { |
2c03d07a | 471 | struct device *dev = &data->acpi_dev->dev; |
18e25555 LT |
472 | struct acpi_buffer buf; |
473 | acpi_status ret; | |
2c03d07a | 474 | struct acpi_object_list params; |
2c03d07a | 475 | union acpi_object id; |
18e25555 | 476 | union acpi_object *pack; |
2c03d07a LT |
477 | |
478 | id.type = ACPI_TYPE_INTEGER; | |
18e25555 | 479 | id.integer.value = mux; |
2c03d07a LT |
480 | params.count = 1; |
481 | params.pointer = &id; | |
482 | ||
18e25555 LT |
483 | buf.length = ACPI_ALLOCATE_BUFFER; |
484 | ret = acpi_evaluate_object(data->enumerate_handle, NULL, ¶ms, &buf); | |
485 | if (ret != AE_OK) { | |
486 | dev_err(dev, "GGRP[%#x] ACPI exception: %s\n", mux, | |
487 | acpi_format_exception(ret)); | |
488 | return ERR_PTR(-EIO); | |
489 | } | |
490 | pack = buf.pointer; | |
491 | if (pack->type != ACPI_TYPE_PACKAGE) { | |
492 | /* Execution was successful, but the id was not found */ | |
493 | ACPI_FREE(pack); | |
494 | return ERR_PTR(-ENOENT); | |
495 | } | |
496 | ||
497 | if (pack->package.count < 1) { | |
498 | dev_err(dev, "GGRP[%#x] package is too small\n", mux); | |
499 | ACPI_FREE(pack); | |
500 | return ERR_PTR(-EIO); | |
501 | } | |
502 | return pack; | |
503 | } | |
2c03d07a | 504 | |
18e25555 LT |
505 | static union acpi_object *atk_gitm(struct atk_data *data, u64 id) |
506 | { | |
507 | struct device *dev = &data->acpi_dev->dev; | |
508 | struct atk_acpi_input_buf buf; | |
509 | union acpi_object tmp; | |
510 | struct acpi_object_list params; | |
511 | struct acpi_buffer ret; | |
512 | union acpi_object *obj; | |
513 | acpi_status status; | |
514 | ||
515 | buf.id = id; | |
516 | buf.param1 = 0; | |
517 | buf.param2 = 0; | |
518 | ||
519 | tmp.type = ACPI_TYPE_BUFFER; | |
520 | tmp.buffer.pointer = (u8 *)&buf; | |
521 | tmp.buffer.length = sizeof(buf); | |
522 | ||
523 | params.count = 1; | |
524 | params.pointer = (void *)&tmp; | |
525 | ||
526 | ret.length = ACPI_ALLOCATE_BUFFER; | |
2c03d07a LT |
527 | status = acpi_evaluate_object_typed(data->read_handle, NULL, ¶ms, |
528 | &ret, ACPI_TYPE_BUFFER); | |
529 | if (status != AE_OK) { | |
18e25555 | 530 | dev_warn(dev, "GITM[%#llx] ACPI exception: %s\n", id, |
2c03d07a | 531 | acpi_format_exception(status)); |
18e25555 | 532 | return ERR_PTR(-EIO); |
2c03d07a | 533 | } |
18e25555 LT |
534 | obj = ret.pointer; |
535 | ||
536 | /* Sanity check */ | |
537 | if (obj->buffer.length < 8) { | |
538 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
539 | obj->buffer.length); | |
540 | ACPI_FREE(obj); | |
541 | return ERR_PTR(-EIO); | |
542 | } | |
543 | return obj; | |
544 | } | |
2c03d07a | 545 | |
9e6eba61 LT |
546 | static union acpi_object *atk_sitm(struct atk_data *data, |
547 | struct atk_acpi_input_buf *buf) | |
548 | { | |
549 | struct device *dev = &data->acpi_dev->dev; | |
550 | struct acpi_object_list params; | |
551 | union acpi_object tmp; | |
552 | struct acpi_buffer ret; | |
553 | union acpi_object *obj; | |
554 | acpi_status status; | |
555 | ||
556 | tmp.type = ACPI_TYPE_BUFFER; | |
557 | tmp.buffer.pointer = (u8 *)buf; | |
558 | tmp.buffer.length = sizeof(*buf); | |
559 | ||
560 | params.count = 1; | |
561 | params.pointer = &tmp; | |
562 | ||
563 | ret.length = ACPI_ALLOCATE_BUFFER; | |
564 | status = acpi_evaluate_object_typed(data->write_handle, NULL, ¶ms, | |
565 | &ret, ACPI_TYPE_BUFFER); | |
566 | if (status != AE_OK) { | |
567 | dev_warn(dev, "SITM[%#x] ACPI exception: %s\n", buf->id, | |
568 | acpi_format_exception(status)); | |
569 | return ERR_PTR(-EIO); | |
570 | } | |
571 | obj = ret.pointer; | |
572 | ||
573 | /* Sanity check */ | |
574 | if (obj->buffer.length < 8) { | |
575 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
576 | obj->buffer.length); | |
577 | ACPI_FREE(obj); | |
578 | return ERR_PTR(-EIO); | |
579 | } | |
580 | return obj; | |
581 | } | |
582 | ||
18e25555 LT |
583 | static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value) |
584 | { | |
585 | struct atk_data *data = sensor->data; | |
586 | struct device *dev = &data->acpi_dev->dev; | |
587 | union acpi_object *obj; | |
588 | struct atk_acpi_ret_buffer *buf; | |
589 | int err = 0; | |
590 | ||
591 | obj = atk_gitm(data, sensor->id); | |
592 | if (IS_ERR(obj)) | |
593 | return PTR_ERR(obj); | |
594 | ||
595 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
596 | if (buf->flags == 0) { | |
2c03d07a LT |
597 | /* The reading is not valid, possible causes: |
598 | * - sensor failure | |
599 | * - enumeration was FUBAR (and we didn't notice) | |
600 | */ | |
18e25555 LT |
601 | dev_warn(dev, "Read failed, sensor = %#llx\n", sensor->id); |
602 | err = -EIO; | |
603 | goto out; | |
2c03d07a LT |
604 | } |
605 | ||
18e25555 LT |
606 | *value = buf->value; |
607 | out: | |
608 | ACPI_FREE(obj); | |
609 | return err; | |
2c03d07a LT |
610 | } |
611 | ||
612 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value) | |
613 | { | |
614 | int err; | |
615 | ||
616 | if (!sensor->is_valid || | |
617 | time_after(jiffies, sensor->last_updated + CACHE_TIME)) { | |
618 | if (sensor->data->old_interface) | |
619 | err = atk_read_value_old(sensor, value); | |
620 | else | |
621 | err = atk_read_value_new(sensor, value); | |
622 | ||
623 | sensor->is_valid = true; | |
624 | sensor->last_updated = jiffies; | |
625 | sensor->cached_value = *value; | |
626 | } else { | |
627 | *value = sensor->cached_value; | |
628 | err = 0; | |
629 | } | |
630 | ||
631 | return err; | |
632 | } | |
633 | ||
7e5eab11 LT |
634 | #ifdef CONFIG_DEBUG_FS |
635 | static int atk_debugfs_gitm_get(void *p, u64 *val) | |
636 | { | |
637 | struct atk_data *data = p; | |
638 | union acpi_object *ret; | |
639 | struct atk_acpi_ret_buffer *buf; | |
640 | int err = 0; | |
641 | ||
642 | if (!data->read_handle) | |
643 | return -ENODEV; | |
644 | ||
645 | if (!data->debugfs.id) | |
646 | return -EINVAL; | |
647 | ||
648 | ret = atk_gitm(data, data->debugfs.id); | |
649 | if (IS_ERR(ret)) | |
650 | return PTR_ERR(ret); | |
651 | ||
652 | buf = (struct atk_acpi_ret_buffer *)ret->buffer.pointer; | |
653 | if (buf->flags) | |
654 | *val = buf->value; | |
655 | else | |
656 | err = -EIO; | |
657 | ||
658 | return err; | |
659 | } | |
660 | ||
661 | DEFINE_SIMPLE_ATTRIBUTE(atk_debugfs_gitm, | |
662 | atk_debugfs_gitm_get, | |
663 | NULL, | |
664 | "0x%08llx\n") | |
665 | ||
666 | static int atk_acpi_print(char *buf, size_t sz, union acpi_object *obj) | |
667 | { | |
668 | int ret = 0; | |
669 | ||
670 | switch (obj->type) { | |
671 | case ACPI_TYPE_INTEGER: | |
672 | ret = snprintf(buf, sz, "0x%08llx\n", obj->integer.value); | |
673 | break; | |
674 | case ACPI_TYPE_STRING: | |
675 | ret = snprintf(buf, sz, "%s\n", obj->string.pointer); | |
676 | break; | |
677 | } | |
678 | ||
679 | return ret; | |
680 | } | |
681 | ||
682 | static void atk_pack_print(char *buf, size_t sz, union acpi_object *pack) | |
683 | { | |
684 | int ret; | |
685 | int i; | |
686 | ||
687 | for (i = 0; i < pack->package.count; i++) { | |
688 | union acpi_object *obj = &pack->package.elements[i]; | |
689 | ||
690 | ret = atk_acpi_print(buf, sz, obj); | |
691 | if (ret >= sz) | |
692 | break; | |
693 | buf += ret; | |
694 | sz -= ret; | |
695 | } | |
696 | } | |
697 | ||
698 | static int atk_debugfs_ggrp_open(struct inode *inode, struct file *file) | |
699 | { | |
700 | struct atk_data *data = inode->i_private; | |
701 | char *buf = NULL; | |
702 | union acpi_object *ret; | |
703 | u8 cls; | |
704 | int i; | |
705 | ||
706 | if (!data->enumerate_handle) | |
707 | return -ENODEV; | |
708 | if (!data->debugfs.id) | |
709 | return -EINVAL; | |
710 | ||
711 | cls = (data->debugfs.id & 0xff000000) >> 24; | |
712 | ret = atk_ggrp(data, cls); | |
713 | if (IS_ERR(ret)) | |
714 | return PTR_ERR(ret); | |
715 | ||
716 | for (i = 0; i < ret->package.count; i++) { | |
717 | union acpi_object *pack = &ret->package.elements[i]; | |
718 | union acpi_object *id; | |
719 | ||
720 | if (pack->type != ACPI_TYPE_PACKAGE) | |
721 | continue; | |
722 | if (!pack->package.count) | |
723 | continue; | |
724 | id = &pack->package.elements[0]; | |
725 | if (id->integer.value == data->debugfs.id) { | |
726 | /* Print the package */ | |
727 | buf = kzalloc(512, GFP_KERNEL); | |
728 | if (!buf) { | |
729 | ACPI_FREE(ret); | |
730 | return -ENOMEM; | |
731 | } | |
732 | atk_pack_print(buf, 512, pack); | |
733 | break; | |
734 | } | |
735 | } | |
736 | ACPI_FREE(ret); | |
737 | ||
738 | if (!buf) | |
739 | return -EINVAL; | |
740 | ||
741 | file->private_data = buf; | |
742 | ||
743 | return nonseekable_open(inode, file); | |
744 | } | |
745 | ||
746 | static ssize_t atk_debugfs_ggrp_read(struct file *file, char __user *buf, | |
747 | size_t count, loff_t *pos) | |
748 | { | |
749 | char *str = file->private_data; | |
750 | size_t len = strlen(str); | |
751 | ||
752 | return simple_read_from_buffer(buf, count, pos, str, len); | |
753 | } | |
754 | ||
755 | static int atk_debugfs_ggrp_release(struct inode *inode, struct file *file) | |
756 | { | |
757 | kfree(file->private_data); | |
758 | return 0; | |
759 | } | |
760 | ||
761 | static const struct file_operations atk_debugfs_ggrp_fops = { | |
762 | .read = atk_debugfs_ggrp_read, | |
763 | .open = atk_debugfs_ggrp_open, | |
764 | .release = atk_debugfs_ggrp_release, | |
765 | }; | |
766 | ||
767 | static void atk_debugfs_init(struct atk_data *data) | |
768 | { | |
769 | struct dentry *d; | |
770 | struct dentry *f; | |
771 | ||
772 | data->debugfs.id = 0; | |
773 | ||
774 | d = debugfs_create_dir("asus_atk0110", NULL); | |
775 | if (!d || IS_ERR(d)) | |
776 | return; | |
777 | ||
778 | f = debugfs_create_x32("id", S_IRUSR | S_IWUSR, d, &data->debugfs.id); | |
779 | if (!f || IS_ERR(f)) | |
780 | goto cleanup; | |
781 | ||
782 | f = debugfs_create_file("gitm", S_IRUSR, d, data, | |
783 | &atk_debugfs_gitm); | |
784 | if (!f || IS_ERR(f)) | |
785 | goto cleanup; | |
786 | ||
787 | f = debugfs_create_file("ggrp", S_IRUSR, d, data, | |
788 | &atk_debugfs_ggrp_fops); | |
789 | if (!f || IS_ERR(f)) | |
790 | goto cleanup; | |
791 | ||
792 | data->debugfs.root = d; | |
793 | ||
794 | return; | |
795 | cleanup: | |
796 | debugfs_remove_recursive(d); | |
797 | } | |
798 | ||
799 | static void atk_debugfs_cleanup(struct atk_data *data) | |
800 | { | |
801 | debugfs_remove_recursive(data->debugfs.root); | |
802 | } | |
803 | ||
804 | #else /* CONFIG_DEBUG_FS */ | |
805 | ||
806 | static void atk_debugfs_init(struct atk_data *data) | |
807 | { | |
808 | } | |
809 | ||
810 | static void atk_debugfs_cleanup(struct atk_data *data) | |
811 | { | |
812 | } | |
813 | #endif | |
814 | ||
2c03d07a LT |
815 | static int atk_add_sensor(struct atk_data *data, union acpi_object *obj) |
816 | { | |
817 | struct device *dev = &data->acpi_dev->dev; | |
818 | union acpi_object *flags; | |
819 | union acpi_object *name; | |
820 | union acpi_object *limit1; | |
821 | union acpi_object *limit2; | |
822 | union acpi_object *enable; | |
823 | struct atk_sensor_data *sensor; | |
824 | char const *base_name; | |
825 | char const *limit1_name; | |
826 | char const *limit2_name; | |
827 | u64 type; | |
828 | int err; | |
829 | int *num; | |
830 | int start; | |
831 | ||
832 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
833 | /* wft is this? */ | |
834 | dev_warn(dev, "Unknown type for ACPI object: (%d)\n", | |
835 | obj->type); | |
836 | return -EINVAL; | |
837 | } | |
838 | ||
839 | err = validate_hwmon_pack(data, obj); | |
840 | if (err) | |
841 | return err; | |
842 | ||
843 | /* Ok, we have a valid hwmon package */ | |
844 | type = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS)->integer.value | |
845 | & ATK_TYPE_MASK; | |
846 | ||
847 | switch (type) { | |
848 | case HWMON_TYPE_VOLT: | |
849 | base_name = "in"; | |
850 | limit1_name = "min"; | |
851 | limit2_name = "max"; | |
852 | num = &data->voltage_count; | |
853 | start = 0; | |
854 | break; | |
855 | case HWMON_TYPE_TEMP: | |
856 | base_name = "temp"; | |
857 | limit1_name = "max"; | |
858 | limit2_name = "crit"; | |
859 | num = &data->temperature_count; | |
860 | start = 1; | |
861 | break; | |
862 | case HWMON_TYPE_FAN: | |
863 | base_name = "fan"; | |
864 | limit1_name = "min"; | |
865 | limit2_name = "max"; | |
866 | num = &data->fan_count; | |
867 | start = 1; | |
868 | break; | |
869 | default: | |
870 | dev_warn(dev, "Unknown sensor type: %#llx\n", type); | |
871 | return -EINVAL; | |
872 | } | |
873 | ||
874 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
875 | if (!enable->integer.value) | |
876 | /* sensor is disabled */ | |
877 | return 0; | |
878 | ||
879 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
880 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
881 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
882 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
883 | ||
884 | sensor = kzalloc(sizeof(*sensor), GFP_KERNEL); | |
885 | if (!sensor) | |
886 | return -ENOMEM; | |
887 | ||
888 | sensor->acpi_name = kstrdup(name->string.pointer, GFP_KERNEL); | |
889 | if (!sensor->acpi_name) { | |
890 | err = -ENOMEM; | |
891 | goto out; | |
892 | } | |
893 | ||
894 | INIT_LIST_HEAD(&sensor->list); | |
895 | sensor->type = type; | |
896 | sensor->data = data; | |
897 | sensor->id = flags->integer.value; | |
898 | sensor->limit1 = limit1->integer.value; | |
8d282497 LT |
899 | if (data->old_interface) |
900 | sensor->limit2 = limit2->integer.value; | |
901 | else | |
902 | /* The upper limit is expressed as delta from lower limit */ | |
903 | sensor->limit2 = sensor->limit1 + limit2->integer.value; | |
2c03d07a LT |
904 | |
905 | snprintf(sensor->input_attr_name, ATTR_NAME_SIZE, | |
906 | "%s%d_input", base_name, start + *num); | |
907 | atk_init_attribute(&sensor->input_attr, | |
908 | sensor->input_attr_name, | |
909 | atk_input_show); | |
910 | ||
911 | snprintf(sensor->label_attr_name, ATTR_NAME_SIZE, | |
912 | "%s%d_label", base_name, start + *num); | |
913 | atk_init_attribute(&sensor->label_attr, | |
914 | sensor->label_attr_name, | |
915 | atk_label_show); | |
916 | ||
917 | snprintf(sensor->limit1_attr_name, ATTR_NAME_SIZE, | |
918 | "%s%d_%s", base_name, start + *num, limit1_name); | |
919 | atk_init_attribute(&sensor->limit1_attr, | |
920 | sensor->limit1_attr_name, | |
921 | atk_limit1_show); | |
922 | ||
923 | snprintf(sensor->limit2_attr_name, ATTR_NAME_SIZE, | |
924 | "%s%d_%s", base_name, start + *num, limit2_name); | |
925 | atk_init_attribute(&sensor->limit2_attr, | |
926 | sensor->limit2_attr_name, | |
927 | atk_limit2_show); | |
928 | ||
929 | list_add(&sensor->list, &data->sensor_list); | |
930 | (*num)++; | |
931 | ||
932 | return 1; | |
933 | out: | |
934 | kfree(sensor->acpi_name); | |
935 | kfree(sensor); | |
936 | return err; | |
937 | } | |
938 | ||
939 | static int atk_enumerate_old_hwmon(struct atk_data *data) | |
940 | { | |
941 | struct device *dev = &data->acpi_dev->dev; | |
942 | struct acpi_buffer buf; | |
943 | union acpi_object *pack; | |
944 | acpi_status status; | |
945 | int i, ret; | |
946 | int count = 0; | |
947 | ||
948 | /* Voltages */ | |
949 | buf.length = ACPI_ALLOCATE_BUFFER; | |
950 | status = acpi_evaluate_object_typed(data->atk_handle, | |
951 | METHOD_OLD_ENUM_VLT, NULL, &buf, ACPI_TYPE_PACKAGE); | |
952 | if (status != AE_OK) { | |
953 | dev_warn(dev, METHOD_OLD_ENUM_VLT ": ACPI exception: %s\n", | |
954 | acpi_format_exception(status)); | |
955 | ||
956 | return -ENODEV; | |
957 | } | |
958 | ||
959 | pack = buf.pointer; | |
960 | for (i = 1; i < pack->package.count; i++) { | |
961 | union acpi_object *obj = &pack->package.elements[i]; | |
962 | ||
963 | ret = atk_add_sensor(data, obj); | |
964 | if (ret > 0) | |
965 | count++; | |
966 | } | |
967 | ACPI_FREE(buf.pointer); | |
968 | ||
969 | /* Temperatures */ | |
970 | buf.length = ACPI_ALLOCATE_BUFFER; | |
971 | status = acpi_evaluate_object_typed(data->atk_handle, | |
972 | METHOD_OLD_ENUM_TMP, NULL, &buf, ACPI_TYPE_PACKAGE); | |
973 | if (status != AE_OK) { | |
974 | dev_warn(dev, METHOD_OLD_ENUM_TMP ": ACPI exception: %s\n", | |
975 | acpi_format_exception(status)); | |
976 | ||
977 | ret = -ENODEV; | |
978 | goto cleanup; | |
979 | } | |
980 | ||
981 | pack = buf.pointer; | |
982 | for (i = 1; i < pack->package.count; i++) { | |
983 | union acpi_object *obj = &pack->package.elements[i]; | |
984 | ||
985 | ret = atk_add_sensor(data, obj); | |
986 | if (ret > 0) | |
987 | count++; | |
988 | } | |
989 | ACPI_FREE(buf.pointer); | |
990 | ||
991 | /* Fans */ | |
992 | buf.length = ACPI_ALLOCATE_BUFFER; | |
993 | status = acpi_evaluate_object_typed(data->atk_handle, | |
994 | METHOD_OLD_ENUM_FAN, NULL, &buf, ACPI_TYPE_PACKAGE); | |
995 | if (status != AE_OK) { | |
996 | dev_warn(dev, METHOD_OLD_ENUM_FAN ": ACPI exception: %s\n", | |
997 | acpi_format_exception(status)); | |
998 | ||
999 | ret = -ENODEV; | |
1000 | goto cleanup; | |
1001 | } | |
1002 | ||
1003 | pack = buf.pointer; | |
1004 | for (i = 1; i < pack->package.count; i++) { | |
1005 | union acpi_object *obj = &pack->package.elements[i]; | |
1006 | ||
1007 | ret = atk_add_sensor(data, obj); | |
1008 | if (ret > 0) | |
1009 | count++; | |
1010 | } | |
1011 | ACPI_FREE(buf.pointer); | |
1012 | ||
1013 | return count; | |
1014 | cleanup: | |
1015 | atk_free_sensors(data); | |
1016 | return ret; | |
1017 | } | |
1018 | ||
9e6eba61 LT |
1019 | static int atk_ec_present(struct atk_data *data) |
1020 | { | |
1021 | struct device *dev = &data->acpi_dev->dev; | |
1022 | union acpi_object *pack; | |
1023 | union acpi_object *ec; | |
1024 | int ret; | |
1025 | int i; | |
1026 | ||
1027 | pack = atk_ggrp(data, ATK_MUX_MGMT); | |
1028 | if (IS_ERR(pack)) { | |
1029 | if (PTR_ERR(pack) == -ENOENT) { | |
1030 | /* The MGMT class does not exists - that's ok */ | |
1031 | dev_dbg(dev, "Class %#llx not found\n", ATK_MUX_MGMT); | |
1032 | return 0; | |
1033 | } | |
1034 | return PTR_ERR(pack); | |
1035 | } | |
1036 | ||
1037 | /* Search the EC */ | |
1038 | ec = NULL; | |
1039 | for (i = 0; i < pack->package.count; i++) { | |
1040 | union acpi_object *obj = &pack->package.elements[i]; | |
1041 | union acpi_object *id; | |
1042 | ||
1043 | if (obj->type != ACPI_TYPE_PACKAGE) | |
1044 | continue; | |
1045 | ||
1046 | id = &obj->package.elements[0]; | |
1047 | if (id->type != ACPI_TYPE_INTEGER) | |
1048 | continue; | |
1049 | ||
1050 | if (id->integer.value == ATK_EC_ID) { | |
1051 | ec = obj; | |
1052 | break; | |
1053 | } | |
1054 | } | |
1055 | ||
1056 | ret = (ec != NULL); | |
1057 | if (!ret) | |
1058 | /* The system has no EC */ | |
1059 | dev_dbg(dev, "EC not found\n"); | |
1060 | ||
1061 | ACPI_FREE(pack); | |
1062 | return ret; | |
1063 | } | |
1064 | ||
1065 | static int atk_ec_enabled(struct atk_data *data) | |
1066 | { | |
1067 | struct device *dev = &data->acpi_dev->dev; | |
1068 | union acpi_object *obj; | |
1069 | struct atk_acpi_ret_buffer *buf; | |
1070 | int err; | |
1071 | ||
1072 | obj = atk_gitm(data, ATK_EC_ID); | |
1073 | if (IS_ERR(obj)) { | |
1074 | dev_err(dev, "Unable to query EC status\n"); | |
1075 | return PTR_ERR(obj); | |
1076 | } | |
1077 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1078 | ||
1079 | if (buf->flags == 0) { | |
1080 | dev_err(dev, "Unable to query EC status\n"); | |
1081 | err = -EIO; | |
1082 | } else { | |
1083 | err = (buf->value != 0); | |
1084 | dev_dbg(dev, "EC is %sabled\n", | |
1085 | err ? "en" : "dis"); | |
1086 | } | |
1087 | ||
1088 | ACPI_FREE(obj); | |
1089 | return err; | |
1090 | } | |
1091 | ||
1092 | static int atk_ec_ctl(struct atk_data *data, int enable) | |
1093 | { | |
1094 | struct device *dev = &data->acpi_dev->dev; | |
1095 | union acpi_object *obj; | |
1096 | struct atk_acpi_input_buf sitm; | |
1097 | struct atk_acpi_ret_buffer *ec_ret; | |
1098 | int err = 0; | |
1099 | ||
1100 | sitm.id = ATK_EC_ID; | |
1101 | sitm.param1 = enable; | |
1102 | sitm.param2 = 0; | |
1103 | ||
1104 | obj = atk_sitm(data, &sitm); | |
1105 | if (IS_ERR(obj)) { | |
1106 | dev_err(dev, "Failed to %sable the EC\n", | |
1107 | enable ? "en" : "dis"); | |
1108 | return PTR_ERR(obj); | |
1109 | } | |
1110 | ec_ret = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1111 | if (ec_ret->flags == 0) { | |
1112 | dev_err(dev, "Failed to %sable the EC\n", | |
1113 | enable ? "en" : "dis"); | |
1114 | err = -EIO; | |
1115 | } else { | |
1116 | dev_info(dev, "EC %sabled\n", | |
1117 | enable ? "en" : "dis"); | |
1118 | } | |
1119 | ||
1120 | ACPI_FREE(obj); | |
1121 | return err; | |
1122 | } | |
1123 | ||
2c03d07a LT |
1124 | static int atk_enumerate_new_hwmon(struct atk_data *data) |
1125 | { | |
1126 | struct device *dev = &data->acpi_dev->dev; | |
2c03d07a LT |
1127 | union acpi_object *pack; |
1128 | int err; | |
1129 | int i; | |
1130 | ||
9e6eba61 LT |
1131 | err = atk_ec_present(data); |
1132 | if (err < 0) | |
1133 | return err; | |
1134 | if (err) { | |
1135 | err = atk_ec_enabled(data); | |
1136 | if (err < 0) | |
1137 | return err; | |
1138 | /* If the EC was disabled we will disable it again on unload */ | |
1139 | data->disable_ec = err; | |
1140 | ||
1141 | err = atk_ec_ctl(data, 1); | |
1142 | if (err) { | |
1143 | data->disable_ec = false; | |
1144 | return err; | |
1145 | } | |
1146 | } | |
1147 | ||
2c03d07a LT |
1148 | dev_dbg(dev, "Enumerating hwmon sensors\n"); |
1149 | ||
18e25555 LT |
1150 | pack = atk_ggrp(data, ATK_MUX_HWMON); |
1151 | if (IS_ERR(pack)) | |
1152 | return PTR_ERR(pack); | |
2c03d07a LT |
1153 | |
1154 | for (i = 0; i < pack->package.count; i++) { | |
1155 | union acpi_object *obj = &pack->package.elements[i]; | |
1156 | ||
1157 | atk_add_sensor(data, obj); | |
1158 | } | |
1159 | ||
1160 | err = data->voltage_count + data->temperature_count + data->fan_count; | |
1161 | ||
18e25555 | 1162 | ACPI_FREE(pack); |
2c03d07a LT |
1163 | return err; |
1164 | } | |
1165 | ||
1166 | static int atk_create_files(struct atk_data *data) | |
1167 | { | |
1168 | struct atk_sensor_data *s; | |
1169 | int err; | |
1170 | ||
1171 | list_for_each_entry(s, &data->sensor_list, list) { | |
a30dcb4f | 1172 | sysfs_attr_init(&s->input_attr.attr); |
2c03d07a LT |
1173 | err = device_create_file(data->hwmon_dev, &s->input_attr); |
1174 | if (err) | |
1175 | return err; | |
a30dcb4f | 1176 | sysfs_attr_init(&s->label_attr.attr); |
2c03d07a LT |
1177 | err = device_create_file(data->hwmon_dev, &s->label_attr); |
1178 | if (err) | |
1179 | return err; | |
a30dcb4f | 1180 | sysfs_attr_init(&s->limit1_attr.attr); |
2c03d07a LT |
1181 | err = device_create_file(data->hwmon_dev, &s->limit1_attr); |
1182 | if (err) | |
1183 | return err; | |
a30dcb4f | 1184 | sysfs_attr_init(&s->limit2_attr.attr); |
2c03d07a LT |
1185 | err = device_create_file(data->hwmon_dev, &s->limit2_attr); |
1186 | if (err) | |
1187 | return err; | |
1188 | } | |
1189 | ||
1190 | err = device_create_file(data->hwmon_dev, &atk_name_attr); | |
1191 | ||
1192 | return err; | |
1193 | } | |
1194 | ||
1195 | static void atk_remove_files(struct atk_data *data) | |
1196 | { | |
1197 | struct atk_sensor_data *s; | |
1198 | ||
1199 | list_for_each_entry(s, &data->sensor_list, list) { | |
1200 | device_remove_file(data->hwmon_dev, &s->input_attr); | |
1201 | device_remove_file(data->hwmon_dev, &s->label_attr); | |
1202 | device_remove_file(data->hwmon_dev, &s->limit1_attr); | |
1203 | device_remove_file(data->hwmon_dev, &s->limit2_attr); | |
1204 | } | |
1205 | device_remove_file(data->hwmon_dev, &atk_name_attr); | |
1206 | } | |
1207 | ||
1208 | static void atk_free_sensors(struct atk_data *data) | |
1209 | { | |
1210 | struct list_head *head = &data->sensor_list; | |
1211 | struct atk_sensor_data *s, *tmp; | |
1212 | ||
1213 | list_for_each_entry_safe(s, tmp, head, list) { | |
1214 | kfree(s->acpi_name); | |
1215 | kfree(s); | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | static int atk_register_hwmon(struct atk_data *data) | |
1220 | { | |
1221 | struct device *dev = &data->acpi_dev->dev; | |
1222 | int err; | |
1223 | ||
1224 | dev_dbg(dev, "registering hwmon device\n"); | |
1225 | data->hwmon_dev = hwmon_device_register(dev); | |
1226 | if (IS_ERR(data->hwmon_dev)) | |
1227 | return PTR_ERR(data->hwmon_dev); | |
1228 | ||
1229 | dev_dbg(dev, "populating sysfs directory\n"); | |
1230 | err = atk_create_files(data); | |
1231 | if (err) | |
1232 | goto remove; | |
1233 | ||
1234 | return 0; | |
1235 | remove: | |
1236 | /* Cleanup the registered files */ | |
1237 | atk_remove_files(data); | |
1238 | hwmon_device_unregister(data->hwmon_dev); | |
1239 | return err; | |
1240 | } | |
1241 | ||
8ba406be | 1242 | static int atk_probe_if(struct atk_data *data) |
2c03d07a LT |
1243 | { |
1244 | struct device *dev = &data->acpi_dev->dev; | |
1245 | acpi_handle ret; | |
1246 | acpi_status status; | |
8ba406be | 1247 | int err = 0; |
2c03d07a LT |
1248 | |
1249 | /* RTMP: read temperature */ | |
1250 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_TMP, &ret); | |
8ba406be LT |
1251 | if (ACPI_SUCCESS(status)) |
1252 | data->rtmp_handle = ret; | |
1253 | else | |
2c03d07a LT |
1254 | dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n", |
1255 | acpi_format_exception(status)); | |
2c03d07a LT |
1256 | |
1257 | /* RVLT: read voltage */ | |
1258 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_VLT, &ret); | |
8ba406be LT |
1259 | if (ACPI_SUCCESS(status)) |
1260 | data->rvlt_handle = ret; | |
1261 | else | |
2c03d07a LT |
1262 | dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n", |
1263 | acpi_format_exception(status)); | |
2c03d07a LT |
1264 | |
1265 | /* RFAN: read fan status */ | |
1266 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_FAN, &ret); | |
8ba406be LT |
1267 | if (ACPI_SUCCESS(status)) |
1268 | data->rfan_handle = ret; | |
1269 | else | |
2c03d07a LT |
1270 | dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n", |
1271 | acpi_format_exception(status)); | |
2c03d07a LT |
1272 | |
1273 | /* Enumeration */ | |
1274 | status = acpi_get_handle(data->atk_handle, METHOD_ENUMERATE, &ret); | |
8ba406be LT |
1275 | if (ACPI_SUCCESS(status)) |
1276 | data->enumerate_handle = ret; | |
1277 | else | |
2c03d07a LT |
1278 | dev_dbg(dev, "method " METHOD_ENUMERATE " not found: %s\n", |
1279 | acpi_format_exception(status)); | |
2c03d07a LT |
1280 | |
1281 | /* De-multiplexer (read) */ | |
1282 | status = acpi_get_handle(data->atk_handle, METHOD_READ, &ret); | |
8ba406be LT |
1283 | if (ACPI_SUCCESS(status)) |
1284 | data->read_handle = ret; | |
1285 | else | |
2c03d07a LT |
1286 | dev_dbg(dev, "method " METHOD_READ " not found: %s\n", |
1287 | acpi_format_exception(status)); | |
2c03d07a | 1288 | |
9e6eba61 LT |
1289 | /* De-multiplexer (write) */ |
1290 | status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret); | |
8ba406be LT |
1291 | if (ACPI_SUCCESS(status)) |
1292 | data->write_handle = ret; | |
1293 | else | |
1294 | dev_dbg(dev, "method " METHOD_WRITE " not found: %s\n", | |
9e6eba61 | 1295 | acpi_format_exception(status)); |
9e6eba61 | 1296 | |
8ba406be LT |
1297 | /* Check for hwmon methods: first check "old" style methods; note that |
1298 | * both may be present: in this case we stick to the old interface; | |
1299 | * analysis of multiple DSDTs indicates that when both interfaces | |
1300 | * are present the new one (GGRP/GITM) is not functional. | |
1301 | */ | |
1302 | if (data->rtmp_handle && data->rvlt_handle && data->rfan_handle) | |
1303 | data->old_interface = true; | |
1304 | else if (data->enumerate_handle && data->read_handle && | |
1305 | data->write_handle) | |
1306 | data->old_interface = false; | |
1307 | else | |
1308 | err = -ENODEV; | |
1309 | ||
1310 | return err; | |
2c03d07a LT |
1311 | } |
1312 | ||
1313 | static int atk_add(struct acpi_device *device) | |
1314 | { | |
1315 | acpi_status ret; | |
1316 | int err; | |
1317 | struct acpi_buffer buf; | |
1318 | union acpi_object *obj; | |
1319 | struct atk_data *data; | |
1320 | ||
1321 | dev_dbg(&device->dev, "adding...\n"); | |
1322 | ||
1323 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
1324 | if (!data) | |
1325 | return -ENOMEM; | |
1326 | ||
1327 | data->acpi_dev = device; | |
1328 | data->atk_handle = device->handle; | |
1329 | INIT_LIST_HEAD(&data->sensor_list); | |
9e6eba61 | 1330 | data->disable_ec = false; |
2c03d07a LT |
1331 | |
1332 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1333 | ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL, | |
1334 | &buf, ACPI_TYPE_PACKAGE); | |
1335 | if (ret != AE_OK) { | |
1336 | dev_dbg(&device->dev, "atk: method MBIF not found\n"); | |
5542482b LT |
1337 | } else { |
1338 | obj = buf.pointer; | |
1339 | if (obj->package.count >= 2) { | |
1340 | union acpi_object *id = &obj->package.elements[1]; | |
1341 | if (id->type == ACPI_TYPE_STRING) | |
1342 | dev_dbg(&device->dev, "board ID = %s\n", | |
1343 | id->string.pointer); | |
1344 | } | |
1345 | ACPI_FREE(buf.pointer); | |
2c03d07a | 1346 | } |
2c03d07a | 1347 | |
8ba406be LT |
1348 | err = atk_probe_if(data); |
1349 | if (err) { | |
1350 | dev_err(&device->dev, "No usable hwmon interface detected\n"); | |
1351 | goto out; | |
2c03d07a LT |
1352 | } |
1353 | ||
8ba406be LT |
1354 | if (data->old_interface) { |
1355 | dev_dbg(&device->dev, "Using old hwmon interface\n"); | |
2c03d07a | 1356 | err = atk_enumerate_old_hwmon(data); |
8ba406be LT |
1357 | } else { |
1358 | dev_dbg(&device->dev, "Using new hwmon interface\n"); | |
2c03d07a | 1359 | err = atk_enumerate_new_hwmon(data); |
8ba406be | 1360 | } |
2c03d07a LT |
1361 | if (err < 0) |
1362 | goto out; | |
1363 | if (err == 0) { | |
1364 | dev_info(&device->dev, | |
1365 | "No usable sensor detected, bailing out\n"); | |
1366 | err = -ENODEV; | |
1367 | goto out; | |
1368 | } | |
1369 | ||
1370 | err = atk_register_hwmon(data); | |
1371 | if (err) | |
1372 | goto cleanup; | |
1373 | ||
7e5eab11 LT |
1374 | atk_debugfs_init(data); |
1375 | ||
2c03d07a LT |
1376 | device->driver_data = data; |
1377 | return 0; | |
1378 | cleanup: | |
1379 | atk_free_sensors(data); | |
1380 | out: | |
9e6eba61 LT |
1381 | if (data->disable_ec) |
1382 | atk_ec_ctl(data, 0); | |
2c03d07a LT |
1383 | kfree(data); |
1384 | return err; | |
1385 | } | |
1386 | ||
1387 | static int atk_remove(struct acpi_device *device, int type) | |
1388 | { | |
1389 | struct atk_data *data = device->driver_data; | |
1390 | dev_dbg(&device->dev, "removing...\n"); | |
1391 | ||
1392 | device->driver_data = NULL; | |
1393 | ||
7e5eab11 LT |
1394 | atk_debugfs_cleanup(data); |
1395 | ||
2c03d07a LT |
1396 | atk_remove_files(data); |
1397 | atk_free_sensors(data); | |
1398 | hwmon_device_unregister(data->hwmon_dev); | |
1399 | ||
9e6eba61 LT |
1400 | if (data->disable_ec) { |
1401 | if (atk_ec_ctl(data, 0)) | |
1402 | dev_err(&device->dev, "Failed to disable EC\n"); | |
1403 | } | |
1404 | ||
2c03d07a LT |
1405 | kfree(data); |
1406 | ||
1407 | return 0; | |
1408 | } | |
1409 | ||
1410 | static int __init atk0110_init(void) | |
1411 | { | |
1412 | int ret; | |
1413 | ||
70dd6bea JD |
1414 | /* Make sure it's safe to access the device through ACPI */ |
1415 | if (!acpi_resources_are_enforced()) { | |
1416 | pr_err("atk: Resources not safely usable due to " | |
1417 | "acpi_enforce_resources kernel parameter\n"); | |
1418 | return -EBUSY; | |
1419 | } | |
1420 | ||
2c03d07a LT |
1421 | ret = acpi_bus_register_driver(&atk_driver); |
1422 | if (ret) | |
1423 | pr_info("atk: acpi_bus_register_driver failed: %d\n", ret); | |
1424 | ||
1425 | return ret; | |
1426 | } | |
1427 | ||
1428 | static void __exit atk0110_exit(void) | |
1429 | { | |
1430 | acpi_bus_unregister_driver(&atk_driver); | |
1431 | } | |
1432 | ||
1433 | module_init(atk0110_init); | |
1434 | module_exit(atk0110_exit); | |
1435 | ||
1436 | MODULE_LICENSE("GPL"); |