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 | ||
ac561494 JP |
8 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
9 | ||
7e5eab11 | 10 | #include <linux/debugfs.h> |
2c03d07a LT |
11 | #include <linux/kernel.h> |
12 | #include <linux/hwmon.h> | |
13 | #include <linux/list.h> | |
14 | #include <linux/module.h> | |
5a0e3ad6 | 15 | #include <linux/slab.h> |
2c03d07a LT |
16 | |
17 | #include <acpi/acpi.h> | |
18 | #include <acpi/acpixf.h> | |
19 | #include <acpi/acpi_drivers.h> | |
20 | #include <acpi/acpi_bus.h> | |
21 | ||
22 | ||
23 | #define ATK_HID "ATK0110" | |
24 | ||
25 | /* Minimum time between readings, enforced in order to avoid | |
26 | * hogging the CPU. | |
27 | */ | |
28 | #define CACHE_TIME HZ | |
29 | ||
30 | #define BOARD_ID "MBIF" | |
31 | #define METHOD_ENUMERATE "GGRP" | |
32 | #define METHOD_READ "GITM" | |
33 | #define METHOD_WRITE "SITM" | |
34 | #define METHOD_OLD_READ_TMP "RTMP" | |
35 | #define METHOD_OLD_READ_VLT "RVLT" | |
36 | #define METHOD_OLD_READ_FAN "RFAN" | |
37 | #define METHOD_OLD_ENUM_TMP "TSIF" | |
38 | #define METHOD_OLD_ENUM_VLT "VSIF" | |
39 | #define METHOD_OLD_ENUM_FAN "FSIF" | |
40 | ||
41 | #define ATK_MUX_HWMON 0x00000006ULL | |
9e6eba61 | 42 | #define ATK_MUX_MGMT 0x00000011ULL |
2c03d07a LT |
43 | |
44 | #define ATK_CLASS_MASK 0xff000000ULL | |
45 | #define ATK_CLASS_FREQ_CTL 0x03000000ULL | |
46 | #define ATK_CLASS_FAN_CTL 0x04000000ULL | |
47 | #define ATK_CLASS_HWMON 0x06000000ULL | |
9e6eba61 | 48 | #define ATK_CLASS_MGMT 0x11000000ULL |
2c03d07a LT |
49 | |
50 | #define ATK_TYPE_MASK 0x00ff0000ULL | |
51 | #define HWMON_TYPE_VOLT 0x00020000ULL | |
52 | #define HWMON_TYPE_TEMP 0x00030000ULL | |
53 | #define HWMON_TYPE_FAN 0x00040000ULL | |
54 | ||
9e6eba61 LT |
55 | #define ATK_ELEMENT_ID_MASK 0x0000ffffULL |
56 | ||
57 | #define ATK_EC_ID 0x11060004ULL | |
2c03d07a LT |
58 | |
59 | enum atk_pack_member { | |
60 | HWMON_PACK_FLAGS, | |
61 | HWMON_PACK_NAME, | |
62 | HWMON_PACK_LIMIT1, | |
63 | HWMON_PACK_LIMIT2, | |
64 | HWMON_PACK_ENABLE | |
65 | }; | |
66 | ||
67 | /* New package format */ | |
68 | #define _HWMON_NEW_PACK_SIZE 7 | |
69 | #define _HWMON_NEW_PACK_FLAGS 0 | |
70 | #define _HWMON_NEW_PACK_NAME 1 | |
71 | #define _HWMON_NEW_PACK_UNK1 2 | |
72 | #define _HWMON_NEW_PACK_UNK2 3 | |
73 | #define _HWMON_NEW_PACK_LIMIT1 4 | |
74 | #define _HWMON_NEW_PACK_LIMIT2 5 | |
75 | #define _HWMON_NEW_PACK_ENABLE 6 | |
76 | ||
77 | /* Old package format */ | |
78 | #define _HWMON_OLD_PACK_SIZE 5 | |
79 | #define _HWMON_OLD_PACK_FLAGS 0 | |
80 | #define _HWMON_OLD_PACK_NAME 1 | |
81 | #define _HWMON_OLD_PACK_LIMIT1 2 | |
82 | #define _HWMON_OLD_PACK_LIMIT2 3 | |
83 | #define _HWMON_OLD_PACK_ENABLE 4 | |
84 | ||
85 | ||
86 | struct atk_data { | |
87 | struct device *hwmon_dev; | |
88 | acpi_handle atk_handle; | |
89 | struct acpi_device *acpi_dev; | |
90 | ||
91 | bool old_interface; | |
92 | ||
93 | /* old interface */ | |
94 | acpi_handle rtmp_handle; | |
95 | acpi_handle rvlt_handle; | |
96 | acpi_handle rfan_handle; | |
97 | /* new inteface */ | |
98 | acpi_handle enumerate_handle; | |
99 | acpi_handle read_handle; | |
9e6eba61 LT |
100 | acpi_handle write_handle; |
101 | ||
102 | bool disable_ec; | |
2c03d07a LT |
103 | |
104 | int voltage_count; | |
105 | int temperature_count; | |
106 | int fan_count; | |
107 | struct list_head sensor_list; | |
7e5eab11 LT |
108 | |
109 | struct { | |
110 | struct dentry *root; | |
111 | u32 id; | |
112 | } debugfs; | |
2c03d07a LT |
113 | }; |
114 | ||
115 | ||
116 | typedef ssize_t (*sysfs_show_func)(struct device *dev, | |
117 | struct device_attribute *attr, char *buf); | |
118 | ||
119 | static const struct acpi_device_id atk_ids[] = { | |
120 | {ATK_HID, 0}, | |
121 | {"", 0}, | |
122 | }; | |
123 | MODULE_DEVICE_TABLE(acpi, atk_ids); | |
124 | ||
125 | #define ATTR_NAME_SIZE 16 /* Worst case is "tempN_input" */ | |
126 | ||
127 | struct atk_sensor_data { | |
128 | struct list_head list; | |
129 | struct atk_data *data; | |
130 | struct device_attribute label_attr; | |
131 | struct device_attribute input_attr; | |
132 | struct device_attribute limit1_attr; | |
133 | struct device_attribute limit2_attr; | |
134 | char label_attr_name[ATTR_NAME_SIZE]; | |
135 | char input_attr_name[ATTR_NAME_SIZE]; | |
136 | char limit1_attr_name[ATTR_NAME_SIZE]; | |
137 | char limit2_attr_name[ATTR_NAME_SIZE]; | |
138 | u64 id; | |
139 | u64 type; | |
140 | u64 limit1; | |
141 | u64 limit2; | |
142 | u64 cached_value; | |
143 | unsigned long last_updated; /* in jiffies */ | |
144 | bool is_valid; | |
145 | char const *acpi_name; | |
146 | }; | |
147 | ||
18e25555 LT |
148 | /* Return buffer format: |
149 | * [0-3] "value" is valid flag | |
150 | * [4-7] value | |
151 | * [8- ] unknown stuff on newer mobos | |
152 | */ | |
153 | struct atk_acpi_ret_buffer { | |
154 | u32 flags; | |
155 | u32 value; | |
156 | u8 data[]; | |
157 | }; | |
158 | ||
159 | /* Input buffer used for GITM and SITM methods */ | |
160 | struct atk_acpi_input_buf { | |
161 | u32 id; | |
162 | u32 param1; | |
163 | u32 param2; | |
2c03d07a LT |
164 | }; |
165 | ||
166 | static int atk_add(struct acpi_device *device); | |
167 | static int atk_remove(struct acpi_device *device, int type); | |
168 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj); | |
169 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value); | |
170 | static void atk_free_sensors(struct atk_data *data); | |
171 | ||
172 | static struct acpi_driver atk_driver = { | |
173 | .name = ATK_HID, | |
174 | .class = "hwmon", | |
175 | .ids = atk_ids, | |
176 | .ops = { | |
177 | .add = atk_add, | |
178 | .remove = atk_remove, | |
179 | }, | |
180 | }; | |
181 | ||
182 | #define input_to_atk_sensor(attr) \ | |
183 | container_of(attr, struct atk_sensor_data, input_attr) | |
184 | ||
185 | #define label_to_atk_sensor(attr) \ | |
186 | container_of(attr, struct atk_sensor_data, label_attr) | |
187 | ||
188 | #define limit1_to_atk_sensor(attr) \ | |
189 | container_of(attr, struct atk_sensor_data, limit1_attr) | |
190 | ||
191 | #define limit2_to_atk_sensor(attr) \ | |
192 | container_of(attr, struct atk_sensor_data, limit2_attr) | |
193 | ||
194 | static ssize_t atk_input_show(struct device *dev, | |
195 | struct device_attribute *attr, char *buf) | |
196 | { | |
197 | struct atk_sensor_data *s = input_to_atk_sensor(attr); | |
198 | u64 value; | |
199 | int err; | |
200 | ||
201 | err = atk_read_value(s, &value); | |
202 | if (err) | |
203 | return err; | |
204 | ||
205 | if (s->type == HWMON_TYPE_TEMP) | |
206 | /* ACPI returns decidegree */ | |
207 | value *= 100; | |
208 | ||
209 | return sprintf(buf, "%llu\n", value); | |
210 | } | |
211 | ||
212 | static ssize_t atk_label_show(struct device *dev, | |
213 | struct device_attribute *attr, char *buf) | |
214 | { | |
215 | struct atk_sensor_data *s = label_to_atk_sensor(attr); | |
216 | ||
217 | return sprintf(buf, "%s\n", s->acpi_name); | |
218 | } | |
219 | ||
220 | static ssize_t atk_limit1_show(struct device *dev, | |
221 | struct device_attribute *attr, char *buf) | |
222 | { | |
223 | struct atk_sensor_data *s = limit1_to_atk_sensor(attr); | |
224 | u64 value = s->limit1; | |
225 | ||
226 | if (s->type == HWMON_TYPE_TEMP) | |
227 | value *= 100; | |
228 | ||
229 | return sprintf(buf, "%lld\n", value); | |
230 | } | |
231 | ||
232 | static ssize_t atk_limit2_show(struct device *dev, | |
233 | struct device_attribute *attr, char *buf) | |
234 | { | |
235 | struct atk_sensor_data *s = limit2_to_atk_sensor(attr); | |
236 | u64 value = s->limit2; | |
237 | ||
238 | if (s->type == HWMON_TYPE_TEMP) | |
239 | value *= 100; | |
240 | ||
241 | return sprintf(buf, "%lld\n", value); | |
242 | } | |
243 | ||
244 | static ssize_t atk_name_show(struct device *dev, | |
245 | struct device_attribute *attr, char *buf) | |
246 | { | |
247 | return sprintf(buf, "atk0110\n"); | |
248 | } | |
249 | static struct device_attribute atk_name_attr = | |
250 | __ATTR(name, 0444, atk_name_show, NULL); | |
251 | ||
252 | static void atk_init_attribute(struct device_attribute *attr, char *name, | |
253 | sysfs_show_func show) | |
254 | { | |
255 | attr->attr.name = name; | |
256 | attr->attr.mode = 0444; | |
257 | attr->show = show; | |
258 | attr->store = NULL; | |
259 | } | |
260 | ||
261 | ||
262 | static union acpi_object *atk_get_pack_member(struct atk_data *data, | |
263 | union acpi_object *pack, | |
264 | enum atk_pack_member m) | |
265 | { | |
266 | bool old_if = data->old_interface; | |
267 | int offset; | |
268 | ||
269 | switch (m) { | |
270 | case HWMON_PACK_FLAGS: | |
271 | offset = old_if ? _HWMON_OLD_PACK_FLAGS : _HWMON_NEW_PACK_FLAGS; | |
272 | break; | |
273 | case HWMON_PACK_NAME: | |
274 | offset = old_if ? _HWMON_OLD_PACK_NAME : _HWMON_NEW_PACK_NAME; | |
275 | break; | |
276 | case HWMON_PACK_LIMIT1: | |
277 | offset = old_if ? _HWMON_OLD_PACK_LIMIT1 : | |
278 | _HWMON_NEW_PACK_LIMIT1; | |
279 | break; | |
280 | case HWMON_PACK_LIMIT2: | |
281 | offset = old_if ? _HWMON_OLD_PACK_LIMIT2 : | |
282 | _HWMON_NEW_PACK_LIMIT2; | |
283 | break; | |
284 | case HWMON_PACK_ENABLE: | |
285 | offset = old_if ? _HWMON_OLD_PACK_ENABLE : | |
286 | _HWMON_NEW_PACK_ENABLE; | |
287 | break; | |
288 | default: | |
289 | return NULL; | |
290 | } | |
291 | ||
292 | return &pack->package.elements[offset]; | |
293 | } | |
294 | ||
295 | ||
296 | /* New package format is: | |
297 | * - flag (int) | |
298 | * class - used for de-muxing the request to the correct GITn | |
299 | * type (volt, temp, fan) | |
300 | * sensor id | | |
301 | * sensor id - used for de-muxing the request _inside_ the GITn | |
302 | * - name (str) | |
303 | * - unknown (int) | |
304 | * - unknown (int) | |
305 | * - limit1 (int) | |
306 | * - limit2 (int) | |
307 | * - enable (int) | |
308 | * | |
309 | * The old package has the same format but it's missing the two unknown fields. | |
310 | */ | |
311 | static int validate_hwmon_pack(struct atk_data *data, union acpi_object *obj) | |
312 | { | |
313 | struct device *dev = &data->acpi_dev->dev; | |
314 | union acpi_object *tmp; | |
315 | bool old_if = data->old_interface; | |
316 | int const expected_size = old_if ? _HWMON_OLD_PACK_SIZE : | |
317 | _HWMON_NEW_PACK_SIZE; | |
318 | ||
319 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
320 | dev_warn(dev, "Invalid type: %d\n", obj->type); | |
321 | return -EINVAL; | |
322 | } | |
323 | ||
324 | if (obj->package.count != expected_size) { | |
325 | dev_warn(dev, "Invalid package size: %d, expected: %d\n", | |
326 | obj->package.count, expected_size); | |
327 | return -EINVAL; | |
328 | } | |
329 | ||
330 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
331 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
332 | dev_warn(dev, "Invalid type (flag): %d\n", tmp->type); | |
333 | return -EINVAL; | |
334 | } | |
335 | ||
336 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
337 | if (tmp->type != ACPI_TYPE_STRING) { | |
338 | dev_warn(dev, "Invalid type (name): %d\n", tmp->type); | |
339 | return -EINVAL; | |
340 | } | |
341 | ||
342 | /* Don't check... we don't know what they're useful for anyway */ | |
343 | #if 0 | |
344 | tmp = &obj->package.elements[HWMON_PACK_UNK1]; | |
345 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
346 | dev_warn(dev, "Invalid type (unk1): %d\n", tmp->type); | |
347 | return -EINVAL; | |
348 | } | |
349 | ||
350 | tmp = &obj->package.elements[HWMON_PACK_UNK2]; | |
351 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
352 | dev_warn(dev, "Invalid type (unk2): %d\n", tmp->type); | |
353 | return -EINVAL; | |
354 | } | |
355 | #endif | |
356 | ||
357 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
358 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
359 | dev_warn(dev, "Invalid type (limit1): %d\n", tmp->type); | |
360 | return -EINVAL; | |
361 | } | |
362 | ||
363 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
364 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
365 | dev_warn(dev, "Invalid type (limit2): %d\n", tmp->type); | |
366 | return -EINVAL; | |
367 | } | |
368 | ||
369 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
370 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
371 | dev_warn(dev, "Invalid type (enable): %d\n", tmp->type); | |
372 | return -EINVAL; | |
373 | } | |
374 | ||
375 | atk_print_sensor(data, obj); | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
b9008708 | 380 | #ifdef DEBUG |
2c03d07a LT |
381 | static char const *atk_sensor_type(union acpi_object *flags) |
382 | { | |
383 | u64 type = flags->integer.value & ATK_TYPE_MASK; | |
384 | char const *what; | |
385 | ||
386 | switch (type) { | |
387 | case HWMON_TYPE_VOLT: | |
388 | what = "voltage"; | |
389 | break; | |
390 | case HWMON_TYPE_TEMP: | |
391 | what = "temperature"; | |
392 | break; | |
393 | case HWMON_TYPE_FAN: | |
394 | what = "fan"; | |
395 | break; | |
396 | default: | |
397 | what = "unknown"; | |
398 | break; | |
399 | } | |
400 | ||
401 | return what; | |
402 | } | |
b9008708 | 403 | #endif |
2c03d07a LT |
404 | |
405 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj) | |
406 | { | |
407 | #ifdef DEBUG | |
408 | struct device *dev = &data->acpi_dev->dev; | |
409 | union acpi_object *flags; | |
410 | union acpi_object *name; | |
411 | union acpi_object *limit1; | |
412 | union acpi_object *limit2; | |
413 | union acpi_object *enable; | |
414 | char const *what; | |
415 | ||
416 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
417 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
418 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
419 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
420 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
421 | ||
422 | what = atk_sensor_type(flags); | |
423 | ||
424 | dev_dbg(dev, "%s: %#llx %s [%llu-%llu] %s\n", what, | |
425 | flags->integer.value, | |
426 | name->string.pointer, | |
427 | limit1->integer.value, limit2->integer.value, | |
428 | enable->integer.value ? "enabled" : "disabled"); | |
429 | #endif | |
430 | } | |
431 | ||
432 | static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value) | |
433 | { | |
434 | struct atk_data *data = sensor->data; | |
435 | struct device *dev = &data->acpi_dev->dev; | |
436 | struct acpi_object_list params; | |
437 | union acpi_object id; | |
438 | acpi_status status; | |
439 | acpi_handle method; | |
440 | ||
441 | switch (sensor->type) { | |
442 | case HWMON_TYPE_VOLT: | |
443 | method = data->rvlt_handle; | |
444 | break; | |
445 | case HWMON_TYPE_TEMP: | |
446 | method = data->rtmp_handle; | |
447 | break; | |
448 | case HWMON_TYPE_FAN: | |
449 | method = data->rfan_handle; | |
450 | break; | |
451 | default: | |
452 | return -EINVAL; | |
453 | } | |
454 | ||
455 | id.type = ACPI_TYPE_INTEGER; | |
456 | id.integer.value = sensor->id; | |
457 | ||
458 | params.count = 1; | |
459 | params.pointer = &id; | |
460 | ||
461 | status = acpi_evaluate_integer(method, NULL, ¶ms, value); | |
462 | if (status != AE_OK) { | |
463 | dev_warn(dev, "%s: ACPI exception: %s\n", __func__, | |
464 | acpi_format_exception(status)); | |
465 | return -EIO; | |
466 | } | |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
18e25555 | 471 | static union acpi_object *atk_ggrp(struct atk_data *data, u16 mux) |
2c03d07a | 472 | { |
2c03d07a | 473 | struct device *dev = &data->acpi_dev->dev; |
18e25555 LT |
474 | struct acpi_buffer buf; |
475 | acpi_status ret; | |
2c03d07a | 476 | struct acpi_object_list params; |
2c03d07a | 477 | union acpi_object id; |
18e25555 | 478 | union acpi_object *pack; |
2c03d07a LT |
479 | |
480 | id.type = ACPI_TYPE_INTEGER; | |
18e25555 | 481 | id.integer.value = mux; |
2c03d07a LT |
482 | params.count = 1; |
483 | params.pointer = &id; | |
484 | ||
18e25555 LT |
485 | buf.length = ACPI_ALLOCATE_BUFFER; |
486 | ret = acpi_evaluate_object(data->enumerate_handle, NULL, ¶ms, &buf); | |
487 | if (ret != AE_OK) { | |
488 | dev_err(dev, "GGRP[%#x] ACPI exception: %s\n", mux, | |
489 | acpi_format_exception(ret)); | |
490 | return ERR_PTR(-EIO); | |
491 | } | |
492 | pack = buf.pointer; | |
493 | if (pack->type != ACPI_TYPE_PACKAGE) { | |
494 | /* Execution was successful, but the id was not found */ | |
495 | ACPI_FREE(pack); | |
496 | return ERR_PTR(-ENOENT); | |
497 | } | |
498 | ||
499 | if (pack->package.count < 1) { | |
500 | dev_err(dev, "GGRP[%#x] package is too small\n", mux); | |
501 | ACPI_FREE(pack); | |
502 | return ERR_PTR(-EIO); | |
503 | } | |
504 | return pack; | |
505 | } | |
2c03d07a | 506 | |
18e25555 LT |
507 | static union acpi_object *atk_gitm(struct atk_data *data, u64 id) |
508 | { | |
509 | struct device *dev = &data->acpi_dev->dev; | |
510 | struct atk_acpi_input_buf buf; | |
511 | union acpi_object tmp; | |
512 | struct acpi_object_list params; | |
513 | struct acpi_buffer ret; | |
514 | union acpi_object *obj; | |
515 | acpi_status status; | |
516 | ||
517 | buf.id = id; | |
518 | buf.param1 = 0; | |
519 | buf.param2 = 0; | |
520 | ||
521 | tmp.type = ACPI_TYPE_BUFFER; | |
522 | tmp.buffer.pointer = (u8 *)&buf; | |
523 | tmp.buffer.length = sizeof(buf); | |
524 | ||
525 | params.count = 1; | |
526 | params.pointer = (void *)&tmp; | |
527 | ||
528 | ret.length = ACPI_ALLOCATE_BUFFER; | |
2c03d07a LT |
529 | status = acpi_evaluate_object_typed(data->read_handle, NULL, ¶ms, |
530 | &ret, ACPI_TYPE_BUFFER); | |
531 | if (status != AE_OK) { | |
18e25555 | 532 | dev_warn(dev, "GITM[%#llx] ACPI exception: %s\n", id, |
2c03d07a | 533 | acpi_format_exception(status)); |
18e25555 | 534 | return ERR_PTR(-EIO); |
2c03d07a | 535 | } |
18e25555 LT |
536 | obj = ret.pointer; |
537 | ||
538 | /* Sanity check */ | |
539 | if (obj->buffer.length < 8) { | |
540 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
541 | obj->buffer.length); | |
542 | ACPI_FREE(obj); | |
543 | return ERR_PTR(-EIO); | |
544 | } | |
545 | return obj; | |
546 | } | |
2c03d07a | 547 | |
9e6eba61 LT |
548 | static union acpi_object *atk_sitm(struct atk_data *data, |
549 | struct atk_acpi_input_buf *buf) | |
550 | { | |
551 | struct device *dev = &data->acpi_dev->dev; | |
552 | struct acpi_object_list params; | |
553 | union acpi_object tmp; | |
554 | struct acpi_buffer ret; | |
555 | union acpi_object *obj; | |
556 | acpi_status status; | |
557 | ||
558 | tmp.type = ACPI_TYPE_BUFFER; | |
559 | tmp.buffer.pointer = (u8 *)buf; | |
560 | tmp.buffer.length = sizeof(*buf); | |
561 | ||
562 | params.count = 1; | |
563 | params.pointer = &tmp; | |
564 | ||
565 | ret.length = ACPI_ALLOCATE_BUFFER; | |
566 | status = acpi_evaluate_object_typed(data->write_handle, NULL, ¶ms, | |
567 | &ret, ACPI_TYPE_BUFFER); | |
568 | if (status != AE_OK) { | |
569 | dev_warn(dev, "SITM[%#x] ACPI exception: %s\n", buf->id, | |
570 | acpi_format_exception(status)); | |
571 | return ERR_PTR(-EIO); | |
572 | } | |
573 | obj = ret.pointer; | |
574 | ||
575 | /* Sanity check */ | |
576 | if (obj->buffer.length < 8) { | |
577 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
578 | obj->buffer.length); | |
579 | ACPI_FREE(obj); | |
580 | return ERR_PTR(-EIO); | |
581 | } | |
582 | return obj; | |
583 | } | |
584 | ||
18e25555 LT |
585 | static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value) |
586 | { | |
587 | struct atk_data *data = sensor->data; | |
588 | struct device *dev = &data->acpi_dev->dev; | |
589 | union acpi_object *obj; | |
590 | struct atk_acpi_ret_buffer *buf; | |
591 | int err = 0; | |
592 | ||
593 | obj = atk_gitm(data, sensor->id); | |
594 | if (IS_ERR(obj)) | |
595 | return PTR_ERR(obj); | |
596 | ||
597 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
598 | if (buf->flags == 0) { | |
2c03d07a LT |
599 | /* The reading is not valid, possible causes: |
600 | * - sensor failure | |
601 | * - enumeration was FUBAR (and we didn't notice) | |
602 | */ | |
18e25555 LT |
603 | dev_warn(dev, "Read failed, sensor = %#llx\n", sensor->id); |
604 | err = -EIO; | |
605 | goto out; | |
2c03d07a LT |
606 | } |
607 | ||
18e25555 LT |
608 | *value = buf->value; |
609 | out: | |
610 | ACPI_FREE(obj); | |
611 | return err; | |
2c03d07a LT |
612 | } |
613 | ||
614 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value) | |
615 | { | |
616 | int err; | |
617 | ||
618 | if (!sensor->is_valid || | |
619 | time_after(jiffies, sensor->last_updated + CACHE_TIME)) { | |
620 | if (sensor->data->old_interface) | |
621 | err = atk_read_value_old(sensor, value); | |
622 | else | |
623 | err = atk_read_value_new(sensor, value); | |
624 | ||
625 | sensor->is_valid = true; | |
626 | sensor->last_updated = jiffies; | |
627 | sensor->cached_value = *value; | |
628 | } else { | |
629 | *value = sensor->cached_value; | |
630 | err = 0; | |
631 | } | |
632 | ||
633 | return err; | |
634 | } | |
635 | ||
7e5eab11 LT |
636 | #ifdef CONFIG_DEBUG_FS |
637 | static int atk_debugfs_gitm_get(void *p, u64 *val) | |
638 | { | |
639 | struct atk_data *data = p; | |
640 | union acpi_object *ret; | |
641 | struct atk_acpi_ret_buffer *buf; | |
642 | int err = 0; | |
643 | ||
644 | if (!data->read_handle) | |
645 | return -ENODEV; | |
646 | ||
647 | if (!data->debugfs.id) | |
648 | return -EINVAL; | |
649 | ||
650 | ret = atk_gitm(data, data->debugfs.id); | |
651 | if (IS_ERR(ret)) | |
652 | return PTR_ERR(ret); | |
653 | ||
654 | buf = (struct atk_acpi_ret_buffer *)ret->buffer.pointer; | |
655 | if (buf->flags) | |
656 | *val = buf->value; | |
657 | else | |
658 | err = -EIO; | |
659 | ||
660 | return err; | |
661 | } | |
662 | ||
663 | DEFINE_SIMPLE_ATTRIBUTE(atk_debugfs_gitm, | |
664 | atk_debugfs_gitm_get, | |
665 | NULL, | |
666 | "0x%08llx\n") | |
667 | ||
668 | static int atk_acpi_print(char *buf, size_t sz, union acpi_object *obj) | |
669 | { | |
670 | int ret = 0; | |
671 | ||
672 | switch (obj->type) { | |
673 | case ACPI_TYPE_INTEGER: | |
674 | ret = snprintf(buf, sz, "0x%08llx\n", obj->integer.value); | |
675 | break; | |
676 | case ACPI_TYPE_STRING: | |
677 | ret = snprintf(buf, sz, "%s\n", obj->string.pointer); | |
678 | break; | |
679 | } | |
680 | ||
681 | return ret; | |
682 | } | |
683 | ||
684 | static void atk_pack_print(char *buf, size_t sz, union acpi_object *pack) | |
685 | { | |
686 | int ret; | |
687 | int i; | |
688 | ||
689 | for (i = 0; i < pack->package.count; i++) { | |
690 | union acpi_object *obj = &pack->package.elements[i]; | |
691 | ||
692 | ret = atk_acpi_print(buf, sz, obj); | |
693 | if (ret >= sz) | |
694 | break; | |
695 | buf += ret; | |
696 | sz -= ret; | |
697 | } | |
698 | } | |
699 | ||
700 | static int atk_debugfs_ggrp_open(struct inode *inode, struct file *file) | |
701 | { | |
702 | struct atk_data *data = inode->i_private; | |
703 | char *buf = NULL; | |
704 | union acpi_object *ret; | |
705 | u8 cls; | |
706 | int i; | |
707 | ||
708 | if (!data->enumerate_handle) | |
709 | return -ENODEV; | |
710 | if (!data->debugfs.id) | |
711 | return -EINVAL; | |
712 | ||
713 | cls = (data->debugfs.id & 0xff000000) >> 24; | |
714 | ret = atk_ggrp(data, cls); | |
715 | if (IS_ERR(ret)) | |
716 | return PTR_ERR(ret); | |
717 | ||
718 | for (i = 0; i < ret->package.count; i++) { | |
719 | union acpi_object *pack = &ret->package.elements[i]; | |
720 | union acpi_object *id; | |
721 | ||
722 | if (pack->type != ACPI_TYPE_PACKAGE) | |
723 | continue; | |
724 | if (!pack->package.count) | |
725 | continue; | |
726 | id = &pack->package.elements[0]; | |
727 | if (id->integer.value == data->debugfs.id) { | |
728 | /* Print the package */ | |
729 | buf = kzalloc(512, GFP_KERNEL); | |
730 | if (!buf) { | |
731 | ACPI_FREE(ret); | |
732 | return -ENOMEM; | |
733 | } | |
734 | atk_pack_print(buf, 512, pack); | |
735 | break; | |
736 | } | |
737 | } | |
738 | ACPI_FREE(ret); | |
739 | ||
740 | if (!buf) | |
741 | return -EINVAL; | |
742 | ||
743 | file->private_data = buf; | |
744 | ||
745 | return nonseekable_open(inode, file); | |
746 | } | |
747 | ||
748 | static ssize_t atk_debugfs_ggrp_read(struct file *file, char __user *buf, | |
749 | size_t count, loff_t *pos) | |
750 | { | |
751 | char *str = file->private_data; | |
752 | size_t len = strlen(str); | |
753 | ||
754 | return simple_read_from_buffer(buf, count, pos, str, len); | |
755 | } | |
756 | ||
757 | static int atk_debugfs_ggrp_release(struct inode *inode, struct file *file) | |
758 | { | |
759 | kfree(file->private_data); | |
760 | return 0; | |
761 | } | |
762 | ||
763 | static const struct file_operations atk_debugfs_ggrp_fops = { | |
764 | .read = atk_debugfs_ggrp_read, | |
765 | .open = atk_debugfs_ggrp_open, | |
766 | .release = atk_debugfs_ggrp_release, | |
6038f373 | 767 | .llseek = no_llseek, |
7e5eab11 LT |
768 | }; |
769 | ||
770 | static void atk_debugfs_init(struct atk_data *data) | |
771 | { | |
772 | struct dentry *d; | |
773 | struct dentry *f; | |
774 | ||
775 | data->debugfs.id = 0; | |
776 | ||
777 | d = debugfs_create_dir("asus_atk0110", NULL); | |
778 | if (!d || IS_ERR(d)) | |
779 | return; | |
780 | ||
781 | f = debugfs_create_x32("id", S_IRUSR | S_IWUSR, d, &data->debugfs.id); | |
782 | if (!f || IS_ERR(f)) | |
783 | goto cleanup; | |
784 | ||
785 | f = debugfs_create_file("gitm", S_IRUSR, d, data, | |
786 | &atk_debugfs_gitm); | |
787 | if (!f || IS_ERR(f)) | |
788 | goto cleanup; | |
789 | ||
790 | f = debugfs_create_file("ggrp", S_IRUSR, d, data, | |
791 | &atk_debugfs_ggrp_fops); | |
792 | if (!f || IS_ERR(f)) | |
793 | goto cleanup; | |
794 | ||
795 | data->debugfs.root = d; | |
796 | ||
797 | return; | |
798 | cleanup: | |
799 | debugfs_remove_recursive(d); | |
800 | } | |
801 | ||
802 | static void atk_debugfs_cleanup(struct atk_data *data) | |
803 | { | |
804 | debugfs_remove_recursive(data->debugfs.root); | |
805 | } | |
806 | ||
807 | #else /* CONFIG_DEBUG_FS */ | |
808 | ||
809 | static void atk_debugfs_init(struct atk_data *data) | |
810 | { | |
811 | } | |
812 | ||
813 | static void atk_debugfs_cleanup(struct atk_data *data) | |
814 | { | |
815 | } | |
816 | #endif | |
817 | ||
2c03d07a LT |
818 | static int atk_add_sensor(struct atk_data *data, union acpi_object *obj) |
819 | { | |
820 | struct device *dev = &data->acpi_dev->dev; | |
821 | union acpi_object *flags; | |
822 | union acpi_object *name; | |
823 | union acpi_object *limit1; | |
824 | union acpi_object *limit2; | |
825 | union acpi_object *enable; | |
826 | struct atk_sensor_data *sensor; | |
827 | char const *base_name; | |
828 | char const *limit1_name; | |
829 | char const *limit2_name; | |
830 | u64 type; | |
831 | int err; | |
832 | int *num; | |
833 | int start; | |
834 | ||
835 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
836 | /* wft is this? */ | |
837 | dev_warn(dev, "Unknown type for ACPI object: (%d)\n", | |
838 | obj->type); | |
839 | return -EINVAL; | |
840 | } | |
841 | ||
842 | err = validate_hwmon_pack(data, obj); | |
843 | if (err) | |
844 | return err; | |
845 | ||
846 | /* Ok, we have a valid hwmon package */ | |
847 | type = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS)->integer.value | |
848 | & ATK_TYPE_MASK; | |
849 | ||
850 | switch (type) { | |
851 | case HWMON_TYPE_VOLT: | |
852 | base_name = "in"; | |
853 | limit1_name = "min"; | |
854 | limit2_name = "max"; | |
855 | num = &data->voltage_count; | |
856 | start = 0; | |
857 | break; | |
858 | case HWMON_TYPE_TEMP: | |
859 | base_name = "temp"; | |
860 | limit1_name = "max"; | |
861 | limit2_name = "crit"; | |
862 | num = &data->temperature_count; | |
863 | start = 1; | |
864 | break; | |
865 | case HWMON_TYPE_FAN: | |
866 | base_name = "fan"; | |
867 | limit1_name = "min"; | |
868 | limit2_name = "max"; | |
869 | num = &data->fan_count; | |
870 | start = 1; | |
871 | break; | |
872 | default: | |
873 | dev_warn(dev, "Unknown sensor type: %#llx\n", type); | |
874 | return -EINVAL; | |
875 | } | |
876 | ||
877 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
878 | if (!enable->integer.value) | |
879 | /* sensor is disabled */ | |
880 | return 0; | |
881 | ||
882 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
883 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
884 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
885 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
886 | ||
887 | sensor = kzalloc(sizeof(*sensor), GFP_KERNEL); | |
888 | if (!sensor) | |
889 | return -ENOMEM; | |
890 | ||
891 | sensor->acpi_name = kstrdup(name->string.pointer, GFP_KERNEL); | |
892 | if (!sensor->acpi_name) { | |
893 | err = -ENOMEM; | |
894 | goto out; | |
895 | } | |
896 | ||
897 | INIT_LIST_HEAD(&sensor->list); | |
898 | sensor->type = type; | |
899 | sensor->data = data; | |
900 | sensor->id = flags->integer.value; | |
901 | sensor->limit1 = limit1->integer.value; | |
8d282497 LT |
902 | if (data->old_interface) |
903 | sensor->limit2 = limit2->integer.value; | |
904 | else | |
905 | /* The upper limit is expressed as delta from lower limit */ | |
906 | sensor->limit2 = sensor->limit1 + limit2->integer.value; | |
2c03d07a LT |
907 | |
908 | snprintf(sensor->input_attr_name, ATTR_NAME_SIZE, | |
909 | "%s%d_input", base_name, start + *num); | |
910 | atk_init_attribute(&sensor->input_attr, | |
911 | sensor->input_attr_name, | |
912 | atk_input_show); | |
913 | ||
914 | snprintf(sensor->label_attr_name, ATTR_NAME_SIZE, | |
915 | "%s%d_label", base_name, start + *num); | |
916 | atk_init_attribute(&sensor->label_attr, | |
917 | sensor->label_attr_name, | |
918 | atk_label_show); | |
919 | ||
920 | snprintf(sensor->limit1_attr_name, ATTR_NAME_SIZE, | |
921 | "%s%d_%s", base_name, start + *num, limit1_name); | |
922 | atk_init_attribute(&sensor->limit1_attr, | |
923 | sensor->limit1_attr_name, | |
924 | atk_limit1_show); | |
925 | ||
926 | snprintf(sensor->limit2_attr_name, ATTR_NAME_SIZE, | |
927 | "%s%d_%s", base_name, start + *num, limit2_name); | |
928 | atk_init_attribute(&sensor->limit2_attr, | |
929 | sensor->limit2_attr_name, | |
930 | atk_limit2_show); | |
931 | ||
932 | list_add(&sensor->list, &data->sensor_list); | |
933 | (*num)++; | |
934 | ||
935 | return 1; | |
936 | out: | |
937 | kfree(sensor->acpi_name); | |
938 | kfree(sensor); | |
939 | return err; | |
940 | } | |
941 | ||
942 | static int atk_enumerate_old_hwmon(struct atk_data *data) | |
943 | { | |
944 | struct device *dev = &data->acpi_dev->dev; | |
945 | struct acpi_buffer buf; | |
946 | union acpi_object *pack; | |
947 | acpi_status status; | |
948 | int i, ret; | |
949 | int count = 0; | |
950 | ||
951 | /* Voltages */ | |
952 | buf.length = ACPI_ALLOCATE_BUFFER; | |
953 | status = acpi_evaluate_object_typed(data->atk_handle, | |
954 | METHOD_OLD_ENUM_VLT, NULL, &buf, ACPI_TYPE_PACKAGE); | |
955 | if (status != AE_OK) { | |
956 | dev_warn(dev, METHOD_OLD_ENUM_VLT ": ACPI exception: %s\n", | |
957 | acpi_format_exception(status)); | |
958 | ||
959 | return -ENODEV; | |
960 | } | |
961 | ||
962 | pack = buf.pointer; | |
963 | for (i = 1; i < pack->package.count; i++) { | |
964 | union acpi_object *obj = &pack->package.elements[i]; | |
965 | ||
966 | ret = atk_add_sensor(data, obj); | |
967 | if (ret > 0) | |
968 | count++; | |
969 | } | |
970 | ACPI_FREE(buf.pointer); | |
971 | ||
972 | /* Temperatures */ | |
973 | buf.length = ACPI_ALLOCATE_BUFFER; | |
974 | status = acpi_evaluate_object_typed(data->atk_handle, | |
975 | METHOD_OLD_ENUM_TMP, NULL, &buf, ACPI_TYPE_PACKAGE); | |
976 | if (status != AE_OK) { | |
977 | dev_warn(dev, METHOD_OLD_ENUM_TMP ": ACPI exception: %s\n", | |
978 | acpi_format_exception(status)); | |
979 | ||
980 | ret = -ENODEV; | |
981 | goto cleanup; | |
982 | } | |
983 | ||
984 | pack = buf.pointer; | |
985 | for (i = 1; i < pack->package.count; i++) { | |
986 | union acpi_object *obj = &pack->package.elements[i]; | |
987 | ||
988 | ret = atk_add_sensor(data, obj); | |
989 | if (ret > 0) | |
990 | count++; | |
991 | } | |
992 | ACPI_FREE(buf.pointer); | |
993 | ||
994 | /* Fans */ | |
995 | buf.length = ACPI_ALLOCATE_BUFFER; | |
996 | status = acpi_evaluate_object_typed(data->atk_handle, | |
997 | METHOD_OLD_ENUM_FAN, NULL, &buf, ACPI_TYPE_PACKAGE); | |
998 | if (status != AE_OK) { | |
999 | dev_warn(dev, METHOD_OLD_ENUM_FAN ": ACPI exception: %s\n", | |
1000 | acpi_format_exception(status)); | |
1001 | ||
1002 | ret = -ENODEV; | |
1003 | goto cleanup; | |
1004 | } | |
1005 | ||
1006 | pack = buf.pointer; | |
1007 | for (i = 1; i < pack->package.count; i++) { | |
1008 | union acpi_object *obj = &pack->package.elements[i]; | |
1009 | ||
1010 | ret = atk_add_sensor(data, obj); | |
1011 | if (ret > 0) | |
1012 | count++; | |
1013 | } | |
1014 | ACPI_FREE(buf.pointer); | |
1015 | ||
1016 | return count; | |
1017 | cleanup: | |
1018 | atk_free_sensors(data); | |
1019 | return ret; | |
1020 | } | |
1021 | ||
9e6eba61 LT |
1022 | static int atk_ec_present(struct atk_data *data) |
1023 | { | |
1024 | struct device *dev = &data->acpi_dev->dev; | |
1025 | union acpi_object *pack; | |
1026 | union acpi_object *ec; | |
1027 | int ret; | |
1028 | int i; | |
1029 | ||
1030 | pack = atk_ggrp(data, ATK_MUX_MGMT); | |
1031 | if (IS_ERR(pack)) { | |
1032 | if (PTR_ERR(pack) == -ENOENT) { | |
1033 | /* The MGMT class does not exists - that's ok */ | |
1034 | dev_dbg(dev, "Class %#llx not found\n", ATK_MUX_MGMT); | |
1035 | return 0; | |
1036 | } | |
1037 | return PTR_ERR(pack); | |
1038 | } | |
1039 | ||
1040 | /* Search the EC */ | |
1041 | ec = NULL; | |
1042 | for (i = 0; i < pack->package.count; i++) { | |
1043 | union acpi_object *obj = &pack->package.elements[i]; | |
1044 | union acpi_object *id; | |
1045 | ||
1046 | if (obj->type != ACPI_TYPE_PACKAGE) | |
1047 | continue; | |
1048 | ||
1049 | id = &obj->package.elements[0]; | |
1050 | if (id->type != ACPI_TYPE_INTEGER) | |
1051 | continue; | |
1052 | ||
1053 | if (id->integer.value == ATK_EC_ID) { | |
1054 | ec = obj; | |
1055 | break; | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | ret = (ec != NULL); | |
1060 | if (!ret) | |
1061 | /* The system has no EC */ | |
1062 | dev_dbg(dev, "EC not found\n"); | |
1063 | ||
1064 | ACPI_FREE(pack); | |
1065 | return ret; | |
1066 | } | |
1067 | ||
1068 | static int atk_ec_enabled(struct atk_data *data) | |
1069 | { | |
1070 | struct device *dev = &data->acpi_dev->dev; | |
1071 | union acpi_object *obj; | |
1072 | struct atk_acpi_ret_buffer *buf; | |
1073 | int err; | |
1074 | ||
1075 | obj = atk_gitm(data, ATK_EC_ID); | |
1076 | if (IS_ERR(obj)) { | |
1077 | dev_err(dev, "Unable to query EC status\n"); | |
1078 | return PTR_ERR(obj); | |
1079 | } | |
1080 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1081 | ||
1082 | if (buf->flags == 0) { | |
1083 | dev_err(dev, "Unable to query EC status\n"); | |
1084 | err = -EIO; | |
1085 | } else { | |
1086 | err = (buf->value != 0); | |
1087 | dev_dbg(dev, "EC is %sabled\n", | |
1088 | err ? "en" : "dis"); | |
1089 | } | |
1090 | ||
1091 | ACPI_FREE(obj); | |
1092 | return err; | |
1093 | } | |
1094 | ||
1095 | static int atk_ec_ctl(struct atk_data *data, int enable) | |
1096 | { | |
1097 | struct device *dev = &data->acpi_dev->dev; | |
1098 | union acpi_object *obj; | |
1099 | struct atk_acpi_input_buf sitm; | |
1100 | struct atk_acpi_ret_buffer *ec_ret; | |
1101 | int err = 0; | |
1102 | ||
1103 | sitm.id = ATK_EC_ID; | |
1104 | sitm.param1 = enable; | |
1105 | sitm.param2 = 0; | |
1106 | ||
1107 | obj = atk_sitm(data, &sitm); | |
1108 | if (IS_ERR(obj)) { | |
1109 | dev_err(dev, "Failed to %sable the EC\n", | |
1110 | enable ? "en" : "dis"); | |
1111 | return PTR_ERR(obj); | |
1112 | } | |
1113 | ec_ret = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1114 | if (ec_ret->flags == 0) { | |
1115 | dev_err(dev, "Failed to %sable the EC\n", | |
1116 | enable ? "en" : "dis"); | |
1117 | err = -EIO; | |
1118 | } else { | |
1119 | dev_info(dev, "EC %sabled\n", | |
1120 | enable ? "en" : "dis"); | |
1121 | } | |
1122 | ||
1123 | ACPI_FREE(obj); | |
1124 | return err; | |
1125 | } | |
1126 | ||
2c03d07a LT |
1127 | static int atk_enumerate_new_hwmon(struct atk_data *data) |
1128 | { | |
1129 | struct device *dev = &data->acpi_dev->dev; | |
2c03d07a LT |
1130 | union acpi_object *pack; |
1131 | int err; | |
1132 | int i; | |
1133 | ||
9e6eba61 LT |
1134 | err = atk_ec_present(data); |
1135 | if (err < 0) | |
1136 | return err; | |
1137 | if (err) { | |
1138 | err = atk_ec_enabled(data); | |
1139 | if (err < 0) | |
1140 | return err; | |
1141 | /* If the EC was disabled we will disable it again on unload */ | |
1142 | data->disable_ec = err; | |
1143 | ||
1144 | err = atk_ec_ctl(data, 1); | |
1145 | if (err) { | |
1146 | data->disable_ec = false; | |
1147 | return err; | |
1148 | } | |
1149 | } | |
1150 | ||
2c03d07a LT |
1151 | dev_dbg(dev, "Enumerating hwmon sensors\n"); |
1152 | ||
18e25555 LT |
1153 | pack = atk_ggrp(data, ATK_MUX_HWMON); |
1154 | if (IS_ERR(pack)) | |
1155 | return PTR_ERR(pack); | |
2c03d07a LT |
1156 | |
1157 | for (i = 0; i < pack->package.count; i++) { | |
1158 | union acpi_object *obj = &pack->package.elements[i]; | |
1159 | ||
1160 | atk_add_sensor(data, obj); | |
1161 | } | |
1162 | ||
1163 | err = data->voltage_count + data->temperature_count + data->fan_count; | |
1164 | ||
18e25555 | 1165 | ACPI_FREE(pack); |
2c03d07a LT |
1166 | return err; |
1167 | } | |
1168 | ||
1169 | static int atk_create_files(struct atk_data *data) | |
1170 | { | |
1171 | struct atk_sensor_data *s; | |
1172 | int err; | |
1173 | ||
1174 | list_for_each_entry(s, &data->sensor_list, list) { | |
a30dcb4f | 1175 | sysfs_attr_init(&s->input_attr.attr); |
2c03d07a LT |
1176 | err = device_create_file(data->hwmon_dev, &s->input_attr); |
1177 | if (err) | |
1178 | return err; | |
a30dcb4f | 1179 | sysfs_attr_init(&s->label_attr.attr); |
2c03d07a LT |
1180 | err = device_create_file(data->hwmon_dev, &s->label_attr); |
1181 | if (err) | |
1182 | return err; | |
a30dcb4f | 1183 | sysfs_attr_init(&s->limit1_attr.attr); |
2c03d07a LT |
1184 | err = device_create_file(data->hwmon_dev, &s->limit1_attr); |
1185 | if (err) | |
1186 | return err; | |
a30dcb4f | 1187 | sysfs_attr_init(&s->limit2_attr.attr); |
2c03d07a LT |
1188 | err = device_create_file(data->hwmon_dev, &s->limit2_attr); |
1189 | if (err) | |
1190 | return err; | |
1191 | } | |
1192 | ||
1193 | err = device_create_file(data->hwmon_dev, &atk_name_attr); | |
1194 | ||
1195 | return err; | |
1196 | } | |
1197 | ||
1198 | static void atk_remove_files(struct atk_data *data) | |
1199 | { | |
1200 | struct atk_sensor_data *s; | |
1201 | ||
1202 | list_for_each_entry(s, &data->sensor_list, list) { | |
1203 | device_remove_file(data->hwmon_dev, &s->input_attr); | |
1204 | device_remove_file(data->hwmon_dev, &s->label_attr); | |
1205 | device_remove_file(data->hwmon_dev, &s->limit1_attr); | |
1206 | device_remove_file(data->hwmon_dev, &s->limit2_attr); | |
1207 | } | |
1208 | device_remove_file(data->hwmon_dev, &atk_name_attr); | |
1209 | } | |
1210 | ||
1211 | static void atk_free_sensors(struct atk_data *data) | |
1212 | { | |
1213 | struct list_head *head = &data->sensor_list; | |
1214 | struct atk_sensor_data *s, *tmp; | |
1215 | ||
1216 | list_for_each_entry_safe(s, tmp, head, list) { | |
1217 | kfree(s->acpi_name); | |
1218 | kfree(s); | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | static int atk_register_hwmon(struct atk_data *data) | |
1223 | { | |
1224 | struct device *dev = &data->acpi_dev->dev; | |
1225 | int err; | |
1226 | ||
1227 | dev_dbg(dev, "registering hwmon device\n"); | |
1228 | data->hwmon_dev = hwmon_device_register(dev); | |
1229 | if (IS_ERR(data->hwmon_dev)) | |
1230 | return PTR_ERR(data->hwmon_dev); | |
1231 | ||
1232 | dev_dbg(dev, "populating sysfs directory\n"); | |
1233 | err = atk_create_files(data); | |
1234 | if (err) | |
1235 | goto remove; | |
1236 | ||
1237 | return 0; | |
1238 | remove: | |
1239 | /* Cleanup the registered files */ | |
1240 | atk_remove_files(data); | |
1241 | hwmon_device_unregister(data->hwmon_dev); | |
1242 | return err; | |
1243 | } | |
1244 | ||
8ba406be | 1245 | static int atk_probe_if(struct atk_data *data) |
2c03d07a LT |
1246 | { |
1247 | struct device *dev = &data->acpi_dev->dev; | |
1248 | acpi_handle ret; | |
1249 | acpi_status status; | |
8ba406be | 1250 | int err = 0; |
2c03d07a LT |
1251 | |
1252 | /* RTMP: read temperature */ | |
1253 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_TMP, &ret); | |
8ba406be LT |
1254 | if (ACPI_SUCCESS(status)) |
1255 | data->rtmp_handle = ret; | |
1256 | else | |
2c03d07a LT |
1257 | dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n", |
1258 | acpi_format_exception(status)); | |
2c03d07a LT |
1259 | |
1260 | /* RVLT: read voltage */ | |
1261 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_VLT, &ret); | |
8ba406be LT |
1262 | if (ACPI_SUCCESS(status)) |
1263 | data->rvlt_handle = ret; | |
1264 | else | |
2c03d07a LT |
1265 | dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n", |
1266 | acpi_format_exception(status)); | |
2c03d07a LT |
1267 | |
1268 | /* RFAN: read fan status */ | |
1269 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_FAN, &ret); | |
8ba406be LT |
1270 | if (ACPI_SUCCESS(status)) |
1271 | data->rfan_handle = ret; | |
1272 | else | |
2c03d07a LT |
1273 | dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n", |
1274 | acpi_format_exception(status)); | |
2c03d07a LT |
1275 | |
1276 | /* Enumeration */ | |
1277 | status = acpi_get_handle(data->atk_handle, METHOD_ENUMERATE, &ret); | |
8ba406be LT |
1278 | if (ACPI_SUCCESS(status)) |
1279 | data->enumerate_handle = ret; | |
1280 | else | |
2c03d07a LT |
1281 | dev_dbg(dev, "method " METHOD_ENUMERATE " not found: %s\n", |
1282 | acpi_format_exception(status)); | |
2c03d07a LT |
1283 | |
1284 | /* De-multiplexer (read) */ | |
1285 | status = acpi_get_handle(data->atk_handle, METHOD_READ, &ret); | |
8ba406be LT |
1286 | if (ACPI_SUCCESS(status)) |
1287 | data->read_handle = ret; | |
1288 | else | |
2c03d07a LT |
1289 | dev_dbg(dev, "method " METHOD_READ " not found: %s\n", |
1290 | acpi_format_exception(status)); | |
2c03d07a | 1291 | |
9e6eba61 LT |
1292 | /* De-multiplexer (write) */ |
1293 | status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret); | |
8ba406be LT |
1294 | if (ACPI_SUCCESS(status)) |
1295 | data->write_handle = ret; | |
1296 | else | |
1297 | dev_dbg(dev, "method " METHOD_WRITE " not found: %s\n", | |
9e6eba61 | 1298 | acpi_format_exception(status)); |
9e6eba61 | 1299 | |
8ba406be LT |
1300 | /* Check for hwmon methods: first check "old" style methods; note that |
1301 | * both may be present: in this case we stick to the old interface; | |
1302 | * analysis of multiple DSDTs indicates that when both interfaces | |
1303 | * are present the new one (GGRP/GITM) is not functional. | |
1304 | */ | |
1305 | if (data->rtmp_handle && data->rvlt_handle && data->rfan_handle) | |
1306 | data->old_interface = true; | |
1307 | else if (data->enumerate_handle && data->read_handle && | |
1308 | data->write_handle) | |
1309 | data->old_interface = false; | |
1310 | else | |
1311 | err = -ENODEV; | |
1312 | ||
1313 | return err; | |
2c03d07a LT |
1314 | } |
1315 | ||
1316 | static int atk_add(struct acpi_device *device) | |
1317 | { | |
1318 | acpi_status ret; | |
1319 | int err; | |
1320 | struct acpi_buffer buf; | |
1321 | union acpi_object *obj; | |
1322 | struct atk_data *data; | |
1323 | ||
1324 | dev_dbg(&device->dev, "adding...\n"); | |
1325 | ||
1326 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
1327 | if (!data) | |
1328 | return -ENOMEM; | |
1329 | ||
1330 | data->acpi_dev = device; | |
1331 | data->atk_handle = device->handle; | |
1332 | INIT_LIST_HEAD(&data->sensor_list); | |
9e6eba61 | 1333 | data->disable_ec = false; |
2c03d07a LT |
1334 | |
1335 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1336 | ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL, | |
1337 | &buf, ACPI_TYPE_PACKAGE); | |
1338 | if (ret != AE_OK) { | |
1339 | dev_dbg(&device->dev, "atk: method MBIF not found\n"); | |
5542482b LT |
1340 | } else { |
1341 | obj = buf.pointer; | |
1342 | if (obj->package.count >= 2) { | |
1343 | union acpi_object *id = &obj->package.elements[1]; | |
1344 | if (id->type == ACPI_TYPE_STRING) | |
1345 | dev_dbg(&device->dev, "board ID = %s\n", | |
1346 | id->string.pointer); | |
1347 | } | |
1348 | ACPI_FREE(buf.pointer); | |
2c03d07a | 1349 | } |
2c03d07a | 1350 | |
8ba406be LT |
1351 | err = atk_probe_if(data); |
1352 | if (err) { | |
1353 | dev_err(&device->dev, "No usable hwmon interface detected\n"); | |
1354 | goto out; | |
2c03d07a LT |
1355 | } |
1356 | ||
8ba406be LT |
1357 | if (data->old_interface) { |
1358 | dev_dbg(&device->dev, "Using old hwmon interface\n"); | |
2c03d07a | 1359 | err = atk_enumerate_old_hwmon(data); |
8ba406be LT |
1360 | } else { |
1361 | dev_dbg(&device->dev, "Using new hwmon interface\n"); | |
2c03d07a | 1362 | err = atk_enumerate_new_hwmon(data); |
8ba406be | 1363 | } |
2c03d07a LT |
1364 | if (err < 0) |
1365 | goto out; | |
1366 | if (err == 0) { | |
1367 | dev_info(&device->dev, | |
1368 | "No usable sensor detected, bailing out\n"); | |
1369 | err = -ENODEV; | |
1370 | goto out; | |
1371 | } | |
1372 | ||
1373 | err = atk_register_hwmon(data); | |
1374 | if (err) | |
1375 | goto cleanup; | |
1376 | ||
7e5eab11 LT |
1377 | atk_debugfs_init(data); |
1378 | ||
2c03d07a LT |
1379 | device->driver_data = data; |
1380 | return 0; | |
1381 | cleanup: | |
1382 | atk_free_sensors(data); | |
1383 | out: | |
9e6eba61 LT |
1384 | if (data->disable_ec) |
1385 | atk_ec_ctl(data, 0); | |
2c03d07a LT |
1386 | kfree(data); |
1387 | return err; | |
1388 | } | |
1389 | ||
1390 | static int atk_remove(struct acpi_device *device, int type) | |
1391 | { | |
1392 | struct atk_data *data = device->driver_data; | |
1393 | dev_dbg(&device->dev, "removing...\n"); | |
1394 | ||
1395 | device->driver_data = NULL; | |
1396 | ||
7e5eab11 LT |
1397 | atk_debugfs_cleanup(data); |
1398 | ||
2c03d07a LT |
1399 | atk_remove_files(data); |
1400 | atk_free_sensors(data); | |
1401 | hwmon_device_unregister(data->hwmon_dev); | |
1402 | ||
9e6eba61 LT |
1403 | if (data->disable_ec) { |
1404 | if (atk_ec_ctl(data, 0)) | |
1405 | dev_err(&device->dev, "Failed to disable EC\n"); | |
1406 | } | |
1407 | ||
2c03d07a LT |
1408 | kfree(data); |
1409 | ||
1410 | return 0; | |
1411 | } | |
1412 | ||
1413 | static int __init atk0110_init(void) | |
1414 | { | |
1415 | int ret; | |
1416 | ||
70dd6bea JD |
1417 | /* Make sure it's safe to access the device through ACPI */ |
1418 | if (!acpi_resources_are_enforced()) { | |
ac561494 | 1419 | pr_err("Resources not safely usable due to acpi_enforce_resources kernel parameter\n"); |
70dd6bea JD |
1420 | return -EBUSY; |
1421 | } | |
1422 | ||
2c03d07a LT |
1423 | ret = acpi_bus_register_driver(&atk_driver); |
1424 | if (ret) | |
ac561494 | 1425 | pr_info("acpi_bus_register_driver failed: %d\n", ret); |
2c03d07a LT |
1426 | |
1427 | return ret; | |
1428 | } | |
1429 | ||
1430 | static void __exit atk0110_exit(void) | |
1431 | { | |
1432 | acpi_bus_unregister_driver(&atk_driver); | |
1433 | } | |
1434 | ||
1435 | module_init(atk0110_init); | |
1436 | module_exit(atk0110_exit); | |
1437 | ||
1438 | MODULE_LICENSE("GPL"); |