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55716d26 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
2c03d07a LT |
2 | /* |
3 | * Copyright (C) 2007-2009 Luca Tettamanti <kronos.it@gmail.com> | |
4 | * | |
2c03d07a LT |
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> |
86ca33e8 | 16 | #include <linux/dmi.h> |
dcd8f392 | 17 | #include <linux/jiffies.h> |
fa845740 | 18 | #include <linux/err.h> |
8b48463f | 19 | #include <linux/acpi.h> |
2c03d07a LT |
20 | |
21 | #define ATK_HID "ATK0110" | |
22 | ||
86ca33e8 LT |
23 | static bool new_if; |
24 | module_param(new_if, bool, 0); | |
25 | MODULE_PARM_DESC(new_if, "Override detection heuristic and force the use of the new ATK0110 interface"); | |
26 | ||
27 | static const struct dmi_system_id __initconst atk_force_new_if[] = { | |
28 | { | |
29 | /* Old interface has broken MCH temp monitoring */ | |
30 | .ident = "Asus Sabertooth X58", | |
31 | .matches = { | |
32 | DMI_MATCH(DMI_BOARD_NAME, "SABERTOOTH X58") | |
33 | } | |
43ca6cb2 LT |
34 | }, { |
35 | /* Old interface reads the same sensor for fan0 and fan1 */ | |
36 | .ident = "Asus M5A78L", | |
37 | .matches = { | |
38 | DMI_MATCH(DMI_BOARD_NAME, "M5A78L") | |
39 | } | |
86ca33e8 LT |
40 | }, |
41 | { } | |
42 | }; | |
43 | ||
75bdc936 GR |
44 | /* |
45 | * Minimum time between readings, enforced in order to avoid | |
2c03d07a LT |
46 | * hogging the CPU. |
47 | */ | |
48 | #define CACHE_TIME HZ | |
49 | ||
50 | #define BOARD_ID "MBIF" | |
51 | #define METHOD_ENUMERATE "GGRP" | |
52 | #define METHOD_READ "GITM" | |
53 | #define METHOD_WRITE "SITM" | |
54 | #define METHOD_OLD_READ_TMP "RTMP" | |
55 | #define METHOD_OLD_READ_VLT "RVLT" | |
56 | #define METHOD_OLD_READ_FAN "RFAN" | |
57 | #define METHOD_OLD_ENUM_TMP "TSIF" | |
58 | #define METHOD_OLD_ENUM_VLT "VSIF" | |
59 | #define METHOD_OLD_ENUM_FAN "FSIF" | |
60 | ||
61 | #define ATK_MUX_HWMON 0x00000006ULL | |
9e6eba61 | 62 | #define ATK_MUX_MGMT 0x00000011ULL |
2c03d07a LT |
63 | |
64 | #define ATK_CLASS_MASK 0xff000000ULL | |
65 | #define ATK_CLASS_FREQ_CTL 0x03000000ULL | |
66 | #define ATK_CLASS_FAN_CTL 0x04000000ULL | |
67 | #define ATK_CLASS_HWMON 0x06000000ULL | |
9e6eba61 | 68 | #define ATK_CLASS_MGMT 0x11000000ULL |
2c03d07a LT |
69 | |
70 | #define ATK_TYPE_MASK 0x00ff0000ULL | |
71 | #define HWMON_TYPE_VOLT 0x00020000ULL | |
72 | #define HWMON_TYPE_TEMP 0x00030000ULL | |
73 | #define HWMON_TYPE_FAN 0x00040000ULL | |
74 | ||
9e6eba61 LT |
75 | #define ATK_ELEMENT_ID_MASK 0x0000ffffULL |
76 | ||
77 | #define ATK_EC_ID 0x11060004ULL | |
2c03d07a LT |
78 | |
79 | enum atk_pack_member { | |
80 | HWMON_PACK_FLAGS, | |
81 | HWMON_PACK_NAME, | |
82 | HWMON_PACK_LIMIT1, | |
83 | HWMON_PACK_LIMIT2, | |
84 | HWMON_PACK_ENABLE | |
85 | }; | |
86 | ||
87 | /* New package format */ | |
88 | #define _HWMON_NEW_PACK_SIZE 7 | |
89 | #define _HWMON_NEW_PACK_FLAGS 0 | |
90 | #define _HWMON_NEW_PACK_NAME 1 | |
91 | #define _HWMON_NEW_PACK_UNK1 2 | |
92 | #define _HWMON_NEW_PACK_UNK2 3 | |
93 | #define _HWMON_NEW_PACK_LIMIT1 4 | |
94 | #define _HWMON_NEW_PACK_LIMIT2 5 | |
95 | #define _HWMON_NEW_PACK_ENABLE 6 | |
96 | ||
97 | /* Old package format */ | |
98 | #define _HWMON_OLD_PACK_SIZE 5 | |
99 | #define _HWMON_OLD_PACK_FLAGS 0 | |
100 | #define _HWMON_OLD_PACK_NAME 1 | |
101 | #define _HWMON_OLD_PACK_LIMIT1 2 | |
102 | #define _HWMON_OLD_PACK_LIMIT2 3 | |
103 | #define _HWMON_OLD_PACK_ENABLE 4 | |
104 | ||
105 | ||
106 | struct atk_data { | |
107 | struct device *hwmon_dev; | |
108 | acpi_handle atk_handle; | |
109 | struct acpi_device *acpi_dev; | |
110 | ||
111 | bool old_interface; | |
112 | ||
113 | /* old interface */ | |
114 | acpi_handle rtmp_handle; | |
115 | acpi_handle rvlt_handle; | |
116 | acpi_handle rfan_handle; | |
84fb029f | 117 | /* new interface */ |
2c03d07a LT |
118 | acpi_handle enumerate_handle; |
119 | acpi_handle read_handle; | |
9e6eba61 LT |
120 | acpi_handle write_handle; |
121 | ||
122 | bool disable_ec; | |
2c03d07a LT |
123 | |
124 | int voltage_count; | |
125 | int temperature_count; | |
126 | int fan_count; | |
127 | struct list_head sensor_list; | |
3c60726d BG |
128 | struct attribute_group attr_group; |
129 | const struct attribute_group *attr_groups[2]; | |
7e5eab11 LT |
130 | |
131 | struct { | |
132 | struct dentry *root; | |
133 | u32 id; | |
134 | } debugfs; | |
2c03d07a LT |
135 | }; |
136 | ||
137 | ||
138 | typedef ssize_t (*sysfs_show_func)(struct device *dev, | |
139 | struct device_attribute *attr, char *buf); | |
140 | ||
141 | static const struct acpi_device_id atk_ids[] = { | |
142 | {ATK_HID, 0}, | |
143 | {"", 0}, | |
144 | }; | |
145 | MODULE_DEVICE_TABLE(acpi, atk_ids); | |
146 | ||
147 | #define ATTR_NAME_SIZE 16 /* Worst case is "tempN_input" */ | |
148 | ||
149 | struct atk_sensor_data { | |
150 | struct list_head list; | |
151 | struct atk_data *data; | |
152 | struct device_attribute label_attr; | |
153 | struct device_attribute input_attr; | |
154 | struct device_attribute limit1_attr; | |
155 | struct device_attribute limit2_attr; | |
156 | char label_attr_name[ATTR_NAME_SIZE]; | |
157 | char input_attr_name[ATTR_NAME_SIZE]; | |
158 | char limit1_attr_name[ATTR_NAME_SIZE]; | |
159 | char limit2_attr_name[ATTR_NAME_SIZE]; | |
160 | u64 id; | |
161 | u64 type; | |
162 | u64 limit1; | |
163 | u64 limit2; | |
164 | u64 cached_value; | |
165 | unsigned long last_updated; /* in jiffies */ | |
166 | bool is_valid; | |
167 | char const *acpi_name; | |
168 | }; | |
169 | ||
75bdc936 GR |
170 | /* |
171 | * Return buffer format: | |
18e25555 LT |
172 | * [0-3] "value" is valid flag |
173 | * [4-7] value | |
174 | * [8- ] unknown stuff on newer mobos | |
175 | */ | |
176 | struct atk_acpi_ret_buffer { | |
177 | u32 flags; | |
178 | u32 value; | |
179 | u8 data[]; | |
180 | }; | |
181 | ||
182 | /* Input buffer used for GITM and SITM methods */ | |
183 | struct atk_acpi_input_buf { | |
184 | u32 id; | |
185 | u32 param1; | |
186 | u32 param2; | |
2c03d07a LT |
187 | }; |
188 | ||
189 | static int atk_add(struct acpi_device *device); | |
6c0eb5ba | 190 | static void atk_remove(struct acpi_device *device); |
2c03d07a LT |
191 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj); |
192 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value); | |
2c03d07a LT |
193 | |
194 | static struct acpi_driver atk_driver = { | |
195 | .name = ATK_HID, | |
196 | .class = "hwmon", | |
197 | .ids = atk_ids, | |
198 | .ops = { | |
199 | .add = atk_add, | |
200 | .remove = atk_remove, | |
201 | }, | |
202 | }; | |
203 | ||
204 | #define input_to_atk_sensor(attr) \ | |
205 | container_of(attr, struct atk_sensor_data, input_attr) | |
206 | ||
207 | #define label_to_atk_sensor(attr) \ | |
208 | container_of(attr, struct atk_sensor_data, label_attr) | |
209 | ||
210 | #define limit1_to_atk_sensor(attr) \ | |
211 | container_of(attr, struct atk_sensor_data, limit1_attr) | |
212 | ||
213 | #define limit2_to_atk_sensor(attr) \ | |
214 | container_of(attr, struct atk_sensor_data, limit2_attr) | |
215 | ||
216 | static ssize_t atk_input_show(struct device *dev, | |
217 | struct device_attribute *attr, char *buf) | |
218 | { | |
219 | struct atk_sensor_data *s = input_to_atk_sensor(attr); | |
220 | u64 value; | |
221 | int err; | |
222 | ||
223 | err = atk_read_value(s, &value); | |
224 | if (err) | |
225 | return err; | |
226 | ||
227 | if (s->type == HWMON_TYPE_TEMP) | |
228 | /* ACPI returns decidegree */ | |
229 | value *= 100; | |
230 | ||
231 | return sprintf(buf, "%llu\n", value); | |
232 | } | |
233 | ||
234 | static ssize_t atk_label_show(struct device *dev, | |
235 | struct device_attribute *attr, char *buf) | |
236 | { | |
237 | struct atk_sensor_data *s = label_to_atk_sensor(attr); | |
238 | ||
239 | return sprintf(buf, "%s\n", s->acpi_name); | |
240 | } | |
241 | ||
242 | static ssize_t atk_limit1_show(struct device *dev, | |
243 | struct device_attribute *attr, char *buf) | |
244 | { | |
245 | struct atk_sensor_data *s = limit1_to_atk_sensor(attr); | |
246 | u64 value = s->limit1; | |
247 | ||
248 | if (s->type == HWMON_TYPE_TEMP) | |
249 | value *= 100; | |
250 | ||
251 | return sprintf(buf, "%lld\n", value); | |
252 | } | |
253 | ||
254 | static ssize_t atk_limit2_show(struct device *dev, | |
255 | struct device_attribute *attr, char *buf) | |
256 | { | |
257 | struct atk_sensor_data *s = limit2_to_atk_sensor(attr); | |
258 | u64 value = s->limit2; | |
259 | ||
260 | if (s->type == HWMON_TYPE_TEMP) | |
261 | value *= 100; | |
262 | ||
263 | return sprintf(buf, "%lld\n", value); | |
264 | } | |
265 | ||
2c03d07a LT |
266 | static void atk_init_attribute(struct device_attribute *attr, char *name, |
267 | sysfs_show_func show) | |
268 | { | |
9a2d55be | 269 | sysfs_attr_init(&attr->attr); |
2c03d07a LT |
270 | attr->attr.name = name; |
271 | attr->attr.mode = 0444; | |
272 | attr->show = show; | |
273 | attr->store = NULL; | |
274 | } | |
275 | ||
276 | ||
277 | static union acpi_object *atk_get_pack_member(struct atk_data *data, | |
278 | union acpi_object *pack, | |
279 | enum atk_pack_member m) | |
280 | { | |
281 | bool old_if = data->old_interface; | |
282 | int offset; | |
283 | ||
284 | switch (m) { | |
285 | case HWMON_PACK_FLAGS: | |
286 | offset = old_if ? _HWMON_OLD_PACK_FLAGS : _HWMON_NEW_PACK_FLAGS; | |
287 | break; | |
288 | case HWMON_PACK_NAME: | |
289 | offset = old_if ? _HWMON_OLD_PACK_NAME : _HWMON_NEW_PACK_NAME; | |
290 | break; | |
291 | case HWMON_PACK_LIMIT1: | |
292 | offset = old_if ? _HWMON_OLD_PACK_LIMIT1 : | |
293 | _HWMON_NEW_PACK_LIMIT1; | |
294 | break; | |
295 | case HWMON_PACK_LIMIT2: | |
296 | offset = old_if ? _HWMON_OLD_PACK_LIMIT2 : | |
297 | _HWMON_NEW_PACK_LIMIT2; | |
298 | break; | |
299 | case HWMON_PACK_ENABLE: | |
300 | offset = old_if ? _HWMON_OLD_PACK_ENABLE : | |
301 | _HWMON_NEW_PACK_ENABLE; | |
302 | break; | |
303 | default: | |
304 | return NULL; | |
305 | } | |
306 | ||
307 | return &pack->package.elements[offset]; | |
308 | } | |
309 | ||
310 | ||
75bdc936 GR |
311 | /* |
312 | * New package format is: | |
2c03d07a LT |
313 | * - flag (int) |
314 | * class - used for de-muxing the request to the correct GITn | |
315 | * type (volt, temp, fan) | |
316 | * sensor id | | |
317 | * sensor id - used for de-muxing the request _inside_ the GITn | |
318 | * - name (str) | |
319 | * - unknown (int) | |
320 | * - unknown (int) | |
321 | * - limit1 (int) | |
322 | * - limit2 (int) | |
323 | * - enable (int) | |
324 | * | |
325 | * The old package has the same format but it's missing the two unknown fields. | |
326 | */ | |
327 | static int validate_hwmon_pack(struct atk_data *data, union acpi_object *obj) | |
328 | { | |
329 | struct device *dev = &data->acpi_dev->dev; | |
330 | union acpi_object *tmp; | |
331 | bool old_if = data->old_interface; | |
332 | int const expected_size = old_if ? _HWMON_OLD_PACK_SIZE : | |
333 | _HWMON_NEW_PACK_SIZE; | |
334 | ||
335 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
336 | dev_warn(dev, "Invalid type: %d\n", obj->type); | |
337 | return -EINVAL; | |
338 | } | |
339 | ||
340 | if (obj->package.count != expected_size) { | |
341 | dev_warn(dev, "Invalid package size: %d, expected: %d\n", | |
342 | obj->package.count, expected_size); | |
343 | return -EINVAL; | |
344 | } | |
345 | ||
346 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
347 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
348 | dev_warn(dev, "Invalid type (flag): %d\n", tmp->type); | |
349 | return -EINVAL; | |
350 | } | |
351 | ||
352 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
353 | if (tmp->type != ACPI_TYPE_STRING) { | |
354 | dev_warn(dev, "Invalid type (name): %d\n", tmp->type); | |
355 | return -EINVAL; | |
356 | } | |
357 | ||
358 | /* Don't check... we don't know what they're useful for anyway */ | |
359 | #if 0 | |
360 | tmp = &obj->package.elements[HWMON_PACK_UNK1]; | |
361 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
362 | dev_warn(dev, "Invalid type (unk1): %d\n", tmp->type); | |
363 | return -EINVAL; | |
364 | } | |
365 | ||
366 | tmp = &obj->package.elements[HWMON_PACK_UNK2]; | |
367 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
368 | dev_warn(dev, "Invalid type (unk2): %d\n", tmp->type); | |
369 | return -EINVAL; | |
370 | } | |
371 | #endif | |
372 | ||
373 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
374 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
375 | dev_warn(dev, "Invalid type (limit1): %d\n", tmp->type); | |
376 | return -EINVAL; | |
377 | } | |
378 | ||
379 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
380 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
381 | dev_warn(dev, "Invalid type (limit2): %d\n", tmp->type); | |
382 | return -EINVAL; | |
383 | } | |
384 | ||
385 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
386 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
387 | dev_warn(dev, "Invalid type (enable): %d\n", tmp->type); | |
388 | return -EINVAL; | |
389 | } | |
390 | ||
391 | atk_print_sensor(data, obj); | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
b9008708 | 396 | #ifdef DEBUG |
2c03d07a LT |
397 | static char const *atk_sensor_type(union acpi_object *flags) |
398 | { | |
399 | u64 type = flags->integer.value & ATK_TYPE_MASK; | |
400 | char const *what; | |
401 | ||
402 | switch (type) { | |
403 | case HWMON_TYPE_VOLT: | |
404 | what = "voltage"; | |
405 | break; | |
406 | case HWMON_TYPE_TEMP: | |
407 | what = "temperature"; | |
408 | break; | |
409 | case HWMON_TYPE_FAN: | |
410 | what = "fan"; | |
411 | break; | |
412 | default: | |
413 | what = "unknown"; | |
414 | break; | |
415 | } | |
416 | ||
417 | return what; | |
418 | } | |
b9008708 | 419 | #endif |
2c03d07a LT |
420 | |
421 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj) | |
422 | { | |
423 | #ifdef DEBUG | |
424 | struct device *dev = &data->acpi_dev->dev; | |
425 | union acpi_object *flags; | |
426 | union acpi_object *name; | |
427 | union acpi_object *limit1; | |
428 | union acpi_object *limit2; | |
429 | union acpi_object *enable; | |
430 | char const *what; | |
431 | ||
432 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
433 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
434 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
435 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
436 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
437 | ||
438 | what = atk_sensor_type(flags); | |
439 | ||
440 | dev_dbg(dev, "%s: %#llx %s [%llu-%llu] %s\n", what, | |
441 | flags->integer.value, | |
442 | name->string.pointer, | |
443 | limit1->integer.value, limit2->integer.value, | |
444 | enable->integer.value ? "enabled" : "disabled"); | |
445 | #endif | |
446 | } | |
447 | ||
448 | static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value) | |
449 | { | |
450 | struct atk_data *data = sensor->data; | |
451 | struct device *dev = &data->acpi_dev->dev; | |
452 | struct acpi_object_list params; | |
453 | union acpi_object id; | |
454 | acpi_status status; | |
455 | acpi_handle method; | |
456 | ||
457 | switch (sensor->type) { | |
458 | case HWMON_TYPE_VOLT: | |
459 | method = data->rvlt_handle; | |
460 | break; | |
461 | case HWMON_TYPE_TEMP: | |
462 | method = data->rtmp_handle; | |
463 | break; | |
464 | case HWMON_TYPE_FAN: | |
465 | method = data->rfan_handle; | |
466 | break; | |
467 | default: | |
468 | return -EINVAL; | |
469 | } | |
470 | ||
471 | id.type = ACPI_TYPE_INTEGER; | |
472 | id.integer.value = sensor->id; | |
473 | ||
474 | params.count = 1; | |
475 | params.pointer = &id; | |
476 | ||
477 | status = acpi_evaluate_integer(method, NULL, ¶ms, value); | |
478 | if (status != AE_OK) { | |
479 | dev_warn(dev, "%s: ACPI exception: %s\n", __func__, | |
480 | acpi_format_exception(status)); | |
481 | return -EIO; | |
482 | } | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
18e25555 | 487 | static union acpi_object *atk_ggrp(struct atk_data *data, u16 mux) |
2c03d07a | 488 | { |
2c03d07a | 489 | struct device *dev = &data->acpi_dev->dev; |
18e25555 LT |
490 | struct acpi_buffer buf; |
491 | acpi_status ret; | |
2c03d07a | 492 | struct acpi_object_list params; |
2c03d07a | 493 | union acpi_object id; |
18e25555 | 494 | union acpi_object *pack; |
2c03d07a LT |
495 | |
496 | id.type = ACPI_TYPE_INTEGER; | |
18e25555 | 497 | id.integer.value = mux; |
2c03d07a LT |
498 | params.count = 1; |
499 | params.pointer = &id; | |
500 | ||
18e25555 LT |
501 | buf.length = ACPI_ALLOCATE_BUFFER; |
502 | ret = acpi_evaluate_object(data->enumerate_handle, NULL, ¶ms, &buf); | |
503 | if (ret != AE_OK) { | |
504 | dev_err(dev, "GGRP[%#x] ACPI exception: %s\n", mux, | |
505 | acpi_format_exception(ret)); | |
506 | return ERR_PTR(-EIO); | |
507 | } | |
508 | pack = buf.pointer; | |
509 | if (pack->type != ACPI_TYPE_PACKAGE) { | |
510 | /* Execution was successful, but the id was not found */ | |
511 | ACPI_FREE(pack); | |
512 | return ERR_PTR(-ENOENT); | |
513 | } | |
514 | ||
515 | if (pack->package.count < 1) { | |
516 | dev_err(dev, "GGRP[%#x] package is too small\n", mux); | |
517 | ACPI_FREE(pack); | |
518 | return ERR_PTR(-EIO); | |
519 | } | |
520 | return pack; | |
521 | } | |
2c03d07a | 522 | |
18e25555 LT |
523 | static union acpi_object *atk_gitm(struct atk_data *data, u64 id) |
524 | { | |
525 | struct device *dev = &data->acpi_dev->dev; | |
526 | struct atk_acpi_input_buf buf; | |
527 | union acpi_object tmp; | |
528 | struct acpi_object_list params; | |
529 | struct acpi_buffer ret; | |
530 | union acpi_object *obj; | |
531 | acpi_status status; | |
532 | ||
533 | buf.id = id; | |
534 | buf.param1 = 0; | |
535 | buf.param2 = 0; | |
536 | ||
537 | tmp.type = ACPI_TYPE_BUFFER; | |
538 | tmp.buffer.pointer = (u8 *)&buf; | |
539 | tmp.buffer.length = sizeof(buf); | |
540 | ||
541 | params.count = 1; | |
542 | params.pointer = (void *)&tmp; | |
543 | ||
544 | ret.length = ACPI_ALLOCATE_BUFFER; | |
2c03d07a LT |
545 | status = acpi_evaluate_object_typed(data->read_handle, NULL, ¶ms, |
546 | &ret, ACPI_TYPE_BUFFER); | |
547 | if (status != AE_OK) { | |
18e25555 | 548 | dev_warn(dev, "GITM[%#llx] ACPI exception: %s\n", id, |
2c03d07a | 549 | acpi_format_exception(status)); |
18e25555 | 550 | return ERR_PTR(-EIO); |
2c03d07a | 551 | } |
18e25555 LT |
552 | obj = ret.pointer; |
553 | ||
554 | /* Sanity check */ | |
555 | if (obj->buffer.length < 8) { | |
556 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
557 | obj->buffer.length); | |
558 | ACPI_FREE(obj); | |
559 | return ERR_PTR(-EIO); | |
560 | } | |
561 | return obj; | |
562 | } | |
2c03d07a | 563 | |
9e6eba61 LT |
564 | static union acpi_object *atk_sitm(struct atk_data *data, |
565 | struct atk_acpi_input_buf *buf) | |
566 | { | |
567 | struct device *dev = &data->acpi_dev->dev; | |
568 | struct acpi_object_list params; | |
569 | union acpi_object tmp; | |
570 | struct acpi_buffer ret; | |
571 | union acpi_object *obj; | |
572 | acpi_status status; | |
573 | ||
574 | tmp.type = ACPI_TYPE_BUFFER; | |
575 | tmp.buffer.pointer = (u8 *)buf; | |
576 | tmp.buffer.length = sizeof(*buf); | |
577 | ||
578 | params.count = 1; | |
579 | params.pointer = &tmp; | |
580 | ||
581 | ret.length = ACPI_ALLOCATE_BUFFER; | |
582 | status = acpi_evaluate_object_typed(data->write_handle, NULL, ¶ms, | |
583 | &ret, ACPI_TYPE_BUFFER); | |
584 | if (status != AE_OK) { | |
585 | dev_warn(dev, "SITM[%#x] ACPI exception: %s\n", buf->id, | |
586 | acpi_format_exception(status)); | |
587 | return ERR_PTR(-EIO); | |
588 | } | |
589 | obj = ret.pointer; | |
590 | ||
591 | /* Sanity check */ | |
592 | if (obj->buffer.length < 8) { | |
593 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
594 | obj->buffer.length); | |
595 | ACPI_FREE(obj); | |
596 | return ERR_PTR(-EIO); | |
597 | } | |
598 | return obj; | |
599 | } | |
600 | ||
18e25555 LT |
601 | static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value) |
602 | { | |
603 | struct atk_data *data = sensor->data; | |
604 | struct device *dev = &data->acpi_dev->dev; | |
605 | union acpi_object *obj; | |
606 | struct atk_acpi_ret_buffer *buf; | |
607 | int err = 0; | |
608 | ||
609 | obj = atk_gitm(data, sensor->id); | |
610 | if (IS_ERR(obj)) | |
611 | return PTR_ERR(obj); | |
612 | ||
613 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
614 | if (buf->flags == 0) { | |
75bdc936 GR |
615 | /* |
616 | * The reading is not valid, possible causes: | |
2c03d07a LT |
617 | * - sensor failure |
618 | * - enumeration was FUBAR (and we didn't notice) | |
619 | */ | |
18e25555 LT |
620 | dev_warn(dev, "Read failed, sensor = %#llx\n", sensor->id); |
621 | err = -EIO; | |
622 | goto out; | |
2c03d07a LT |
623 | } |
624 | ||
18e25555 LT |
625 | *value = buf->value; |
626 | out: | |
627 | ACPI_FREE(obj); | |
628 | return err; | |
2c03d07a LT |
629 | } |
630 | ||
631 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value) | |
632 | { | |
633 | int err; | |
634 | ||
635 | if (!sensor->is_valid || | |
636 | time_after(jiffies, sensor->last_updated + CACHE_TIME)) { | |
637 | if (sensor->data->old_interface) | |
638 | err = atk_read_value_old(sensor, value); | |
639 | else | |
640 | err = atk_read_value_new(sensor, value); | |
641 | ||
a2125d02 AB |
642 | if (err) |
643 | return err; | |
644 | ||
2c03d07a LT |
645 | sensor->is_valid = true; |
646 | sensor->last_updated = jiffies; | |
647 | sensor->cached_value = *value; | |
648 | } else { | |
649 | *value = sensor->cached_value; | |
650 | err = 0; | |
651 | } | |
652 | ||
653 | return err; | |
654 | } | |
655 | ||
7e5eab11 LT |
656 | #ifdef CONFIG_DEBUG_FS |
657 | static int atk_debugfs_gitm_get(void *p, u64 *val) | |
658 | { | |
659 | struct atk_data *data = p; | |
660 | union acpi_object *ret; | |
661 | struct atk_acpi_ret_buffer *buf; | |
662 | int err = 0; | |
663 | ||
664 | if (!data->read_handle) | |
665 | return -ENODEV; | |
666 | ||
667 | if (!data->debugfs.id) | |
668 | return -EINVAL; | |
669 | ||
670 | ret = atk_gitm(data, data->debugfs.id); | |
671 | if (IS_ERR(ret)) | |
672 | return PTR_ERR(ret); | |
673 | ||
674 | buf = (struct atk_acpi_ret_buffer *)ret->buffer.pointer; | |
675 | if (buf->flags) | |
676 | *val = buf->value; | |
677 | else | |
678 | err = -EIO; | |
679 | ||
0b8e77f1 | 680 | ACPI_FREE(ret); |
7e5eab11 LT |
681 | return err; |
682 | } | |
683 | ||
f9facc24 Y |
684 | DEFINE_DEBUGFS_ATTRIBUTE(atk_debugfs_gitm, atk_debugfs_gitm_get, NULL, |
685 | "0x%08llx\n"); | |
7e5eab11 LT |
686 | |
687 | static int atk_acpi_print(char *buf, size_t sz, union acpi_object *obj) | |
688 | { | |
689 | int ret = 0; | |
690 | ||
691 | switch (obj->type) { | |
692 | case ACPI_TYPE_INTEGER: | |
693 | ret = snprintf(buf, sz, "0x%08llx\n", obj->integer.value); | |
694 | break; | |
695 | case ACPI_TYPE_STRING: | |
696 | ret = snprintf(buf, sz, "%s\n", obj->string.pointer); | |
697 | break; | |
698 | } | |
699 | ||
700 | return ret; | |
701 | } | |
702 | ||
703 | static void atk_pack_print(char *buf, size_t sz, union acpi_object *pack) | |
704 | { | |
705 | int ret; | |
706 | int i; | |
707 | ||
708 | for (i = 0; i < pack->package.count; i++) { | |
709 | union acpi_object *obj = &pack->package.elements[i]; | |
710 | ||
711 | ret = atk_acpi_print(buf, sz, obj); | |
712 | if (ret >= sz) | |
713 | break; | |
714 | buf += ret; | |
715 | sz -= ret; | |
716 | } | |
717 | } | |
718 | ||
719 | static int atk_debugfs_ggrp_open(struct inode *inode, struct file *file) | |
720 | { | |
721 | struct atk_data *data = inode->i_private; | |
722 | char *buf = NULL; | |
723 | union acpi_object *ret; | |
724 | u8 cls; | |
725 | int i; | |
726 | ||
727 | if (!data->enumerate_handle) | |
728 | return -ENODEV; | |
729 | if (!data->debugfs.id) | |
730 | return -EINVAL; | |
731 | ||
732 | cls = (data->debugfs.id & 0xff000000) >> 24; | |
733 | ret = atk_ggrp(data, cls); | |
734 | if (IS_ERR(ret)) | |
735 | return PTR_ERR(ret); | |
736 | ||
737 | for (i = 0; i < ret->package.count; i++) { | |
738 | union acpi_object *pack = &ret->package.elements[i]; | |
739 | union acpi_object *id; | |
740 | ||
741 | if (pack->type != ACPI_TYPE_PACKAGE) | |
742 | continue; | |
743 | if (!pack->package.count) | |
744 | continue; | |
745 | id = &pack->package.elements[0]; | |
746 | if (id->integer.value == data->debugfs.id) { | |
747 | /* Print the package */ | |
748 | buf = kzalloc(512, GFP_KERNEL); | |
749 | if (!buf) { | |
750 | ACPI_FREE(ret); | |
751 | return -ENOMEM; | |
752 | } | |
753 | atk_pack_print(buf, 512, pack); | |
754 | break; | |
755 | } | |
756 | } | |
757 | ACPI_FREE(ret); | |
758 | ||
759 | if (!buf) | |
760 | return -EINVAL; | |
761 | ||
762 | file->private_data = buf; | |
763 | ||
764 | return nonseekable_open(inode, file); | |
765 | } | |
766 | ||
767 | static ssize_t atk_debugfs_ggrp_read(struct file *file, char __user *buf, | |
768 | size_t count, loff_t *pos) | |
769 | { | |
770 | char *str = file->private_data; | |
771 | size_t len = strlen(str); | |
772 | ||
773 | return simple_read_from_buffer(buf, count, pos, str, len); | |
774 | } | |
775 | ||
776 | static int atk_debugfs_ggrp_release(struct inode *inode, struct file *file) | |
777 | { | |
778 | kfree(file->private_data); | |
779 | return 0; | |
780 | } | |
781 | ||
782 | static const struct file_operations atk_debugfs_ggrp_fops = { | |
783 | .read = atk_debugfs_ggrp_read, | |
784 | .open = atk_debugfs_ggrp_open, | |
785 | .release = atk_debugfs_ggrp_release, | |
6038f373 | 786 | .llseek = no_llseek, |
7e5eab11 LT |
787 | }; |
788 | ||
789 | static void atk_debugfs_init(struct atk_data *data) | |
790 | { | |
791 | struct dentry *d; | |
7e5eab11 LT |
792 | |
793 | data->debugfs.id = 0; | |
794 | ||
795 | d = debugfs_create_dir("asus_atk0110", NULL); | |
7e5eab11 | 796 | |
08d09d80 GKH |
797 | debugfs_create_x32("id", 0600, d, &data->debugfs.id); |
798 | debugfs_create_file_unsafe("gitm", 0400, d, data, &atk_debugfs_gitm); | |
799 | debugfs_create_file("ggrp", 0400, d, data, &atk_debugfs_ggrp_fops); | |
7e5eab11 LT |
800 | |
801 | data->debugfs.root = d; | |
7e5eab11 LT |
802 | } |
803 | ||
804 | static void atk_debugfs_cleanup(struct atk_data *data) | |
805 | { | |
806 | debugfs_remove_recursive(data->debugfs.root); | |
807 | } | |
808 | ||
809 | #else /* CONFIG_DEBUG_FS */ | |
810 | ||
811 | static void atk_debugfs_init(struct atk_data *data) | |
812 | { | |
813 | } | |
814 | ||
815 | static void atk_debugfs_cleanup(struct atk_data *data) | |
816 | { | |
817 | } | |
818 | #endif | |
819 | ||
2c03d07a LT |
820 | static int atk_add_sensor(struct atk_data *data, union acpi_object *obj) |
821 | { | |
822 | struct device *dev = &data->acpi_dev->dev; | |
823 | union acpi_object *flags; | |
824 | union acpi_object *name; | |
825 | union acpi_object *limit1; | |
826 | union acpi_object *limit2; | |
827 | union acpi_object *enable; | |
828 | struct atk_sensor_data *sensor; | |
829 | char const *base_name; | |
830 | char const *limit1_name; | |
831 | char const *limit2_name; | |
832 | u64 type; | |
833 | int err; | |
834 | int *num; | |
835 | int start; | |
836 | ||
837 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
838 | /* wft is this? */ | |
839 | dev_warn(dev, "Unknown type for ACPI object: (%d)\n", | |
840 | obj->type); | |
841 | return -EINVAL; | |
842 | } | |
843 | ||
844 | err = validate_hwmon_pack(data, obj); | |
845 | if (err) | |
846 | return err; | |
847 | ||
848 | /* Ok, we have a valid hwmon package */ | |
849 | type = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS)->integer.value | |
850 | & ATK_TYPE_MASK; | |
851 | ||
852 | switch (type) { | |
853 | case HWMON_TYPE_VOLT: | |
854 | base_name = "in"; | |
855 | limit1_name = "min"; | |
856 | limit2_name = "max"; | |
857 | num = &data->voltage_count; | |
858 | start = 0; | |
859 | break; | |
860 | case HWMON_TYPE_TEMP: | |
861 | base_name = "temp"; | |
862 | limit1_name = "max"; | |
863 | limit2_name = "crit"; | |
864 | num = &data->temperature_count; | |
865 | start = 1; | |
866 | break; | |
867 | case HWMON_TYPE_FAN: | |
868 | base_name = "fan"; | |
869 | limit1_name = "min"; | |
870 | limit2_name = "max"; | |
871 | num = &data->fan_count; | |
872 | start = 1; | |
873 | break; | |
874 | default: | |
875 | dev_warn(dev, "Unknown sensor type: %#llx\n", type); | |
876 | return -EINVAL; | |
877 | } | |
878 | ||
879 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
880 | if (!enable->integer.value) | |
881 | /* sensor is disabled */ | |
882 | return 0; | |
883 | ||
884 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
885 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
886 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
887 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
888 | ||
c9bdf291 | 889 | sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); |
2c03d07a LT |
890 | if (!sensor) |
891 | return -ENOMEM; | |
892 | ||
c9bdf291 BG |
893 | sensor->acpi_name = devm_kstrdup(dev, name->string.pointer, GFP_KERNEL); |
894 | if (!sensor->acpi_name) | |
895 | return -ENOMEM; | |
2c03d07a LT |
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; | |
2c03d07a LT |
936 | } |
937 | ||
938 | static int atk_enumerate_old_hwmon(struct atk_data *data) | |
939 | { | |
940 | struct device *dev = &data->acpi_dev->dev; | |
941 | struct acpi_buffer buf; | |
942 | union acpi_object *pack; | |
943 | acpi_status status; | |
944 | int i, ret; | |
945 | int count = 0; | |
946 | ||
947 | /* Voltages */ | |
948 | buf.length = ACPI_ALLOCATE_BUFFER; | |
949 | status = acpi_evaluate_object_typed(data->atk_handle, | |
950 | METHOD_OLD_ENUM_VLT, NULL, &buf, ACPI_TYPE_PACKAGE); | |
951 | if (status != AE_OK) { | |
952 | dev_warn(dev, METHOD_OLD_ENUM_VLT ": ACPI exception: %s\n", | |
953 | acpi_format_exception(status)); | |
954 | ||
955 | return -ENODEV; | |
956 | } | |
957 | ||
958 | pack = buf.pointer; | |
959 | for (i = 1; i < pack->package.count; i++) { | |
960 | union acpi_object *obj = &pack->package.elements[i]; | |
961 | ||
962 | ret = atk_add_sensor(data, obj); | |
963 | if (ret > 0) | |
964 | count++; | |
965 | } | |
966 | ACPI_FREE(buf.pointer); | |
967 | ||
968 | /* Temperatures */ | |
969 | buf.length = ACPI_ALLOCATE_BUFFER; | |
970 | status = acpi_evaluate_object_typed(data->atk_handle, | |
971 | METHOD_OLD_ENUM_TMP, NULL, &buf, ACPI_TYPE_PACKAGE); | |
972 | if (status != AE_OK) { | |
973 | dev_warn(dev, METHOD_OLD_ENUM_TMP ": ACPI exception: %s\n", | |
974 | acpi_format_exception(status)); | |
975 | ||
c9bdf291 | 976 | return -ENODEV; |
2c03d07a LT |
977 | } |
978 | ||
979 | pack = buf.pointer; | |
980 | for (i = 1; i < pack->package.count; i++) { | |
981 | union acpi_object *obj = &pack->package.elements[i]; | |
982 | ||
983 | ret = atk_add_sensor(data, obj); | |
984 | if (ret > 0) | |
985 | count++; | |
986 | } | |
987 | ACPI_FREE(buf.pointer); | |
988 | ||
989 | /* Fans */ | |
990 | buf.length = ACPI_ALLOCATE_BUFFER; | |
991 | status = acpi_evaluate_object_typed(data->atk_handle, | |
992 | METHOD_OLD_ENUM_FAN, NULL, &buf, ACPI_TYPE_PACKAGE); | |
993 | if (status != AE_OK) { | |
994 | dev_warn(dev, METHOD_OLD_ENUM_FAN ": ACPI exception: %s\n", | |
995 | acpi_format_exception(status)); | |
996 | ||
c9bdf291 | 997 | return -ENODEV; |
2c03d07a LT |
998 | } |
999 | ||
1000 | pack = buf.pointer; | |
1001 | for (i = 1; i < pack->package.count; i++) { | |
1002 | union acpi_object *obj = &pack->package.elements[i]; | |
1003 | ||
1004 | ret = atk_add_sensor(data, obj); | |
1005 | if (ret > 0) | |
1006 | count++; | |
1007 | } | |
1008 | ACPI_FREE(buf.pointer); | |
1009 | ||
1010 | return count; | |
2c03d07a LT |
1011 | } |
1012 | ||
9e6eba61 LT |
1013 | static int atk_ec_present(struct atk_data *data) |
1014 | { | |
1015 | struct device *dev = &data->acpi_dev->dev; | |
1016 | union acpi_object *pack; | |
1017 | union acpi_object *ec; | |
1018 | int ret; | |
1019 | int i; | |
1020 | ||
1021 | pack = atk_ggrp(data, ATK_MUX_MGMT); | |
1022 | if (IS_ERR(pack)) { | |
1023 | if (PTR_ERR(pack) == -ENOENT) { | |
1024 | /* The MGMT class does not exists - that's ok */ | |
1025 | dev_dbg(dev, "Class %#llx not found\n", ATK_MUX_MGMT); | |
1026 | return 0; | |
1027 | } | |
1028 | return PTR_ERR(pack); | |
1029 | } | |
1030 | ||
1031 | /* Search the EC */ | |
1032 | ec = NULL; | |
1033 | for (i = 0; i < pack->package.count; i++) { | |
1034 | union acpi_object *obj = &pack->package.elements[i]; | |
1035 | union acpi_object *id; | |
1036 | ||
1037 | if (obj->type != ACPI_TYPE_PACKAGE) | |
1038 | continue; | |
1039 | ||
1040 | id = &obj->package.elements[0]; | |
1041 | if (id->type != ACPI_TYPE_INTEGER) | |
1042 | continue; | |
1043 | ||
1044 | if (id->integer.value == ATK_EC_ID) { | |
1045 | ec = obj; | |
1046 | break; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | ret = (ec != NULL); | |
1051 | if (!ret) | |
1052 | /* The system has no EC */ | |
1053 | dev_dbg(dev, "EC not found\n"); | |
1054 | ||
1055 | ACPI_FREE(pack); | |
1056 | return ret; | |
1057 | } | |
1058 | ||
1059 | static int atk_ec_enabled(struct atk_data *data) | |
1060 | { | |
1061 | struct device *dev = &data->acpi_dev->dev; | |
1062 | union acpi_object *obj; | |
1063 | struct atk_acpi_ret_buffer *buf; | |
1064 | int err; | |
1065 | ||
1066 | obj = atk_gitm(data, ATK_EC_ID); | |
1067 | if (IS_ERR(obj)) { | |
1068 | dev_err(dev, "Unable to query EC status\n"); | |
1069 | return PTR_ERR(obj); | |
1070 | } | |
1071 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1072 | ||
1073 | if (buf->flags == 0) { | |
1074 | dev_err(dev, "Unable to query EC status\n"); | |
1075 | err = -EIO; | |
1076 | } else { | |
1077 | err = (buf->value != 0); | |
1078 | dev_dbg(dev, "EC is %sabled\n", | |
1079 | err ? "en" : "dis"); | |
1080 | } | |
1081 | ||
1082 | ACPI_FREE(obj); | |
1083 | return err; | |
1084 | } | |
1085 | ||
1086 | static int atk_ec_ctl(struct atk_data *data, int enable) | |
1087 | { | |
1088 | struct device *dev = &data->acpi_dev->dev; | |
1089 | union acpi_object *obj; | |
1090 | struct atk_acpi_input_buf sitm; | |
1091 | struct atk_acpi_ret_buffer *ec_ret; | |
1092 | int err = 0; | |
1093 | ||
1094 | sitm.id = ATK_EC_ID; | |
1095 | sitm.param1 = enable; | |
1096 | sitm.param2 = 0; | |
1097 | ||
1098 | obj = atk_sitm(data, &sitm); | |
1099 | if (IS_ERR(obj)) { | |
1100 | dev_err(dev, "Failed to %sable the EC\n", | |
1101 | enable ? "en" : "dis"); | |
1102 | return PTR_ERR(obj); | |
1103 | } | |
1104 | ec_ret = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1105 | if (ec_ret->flags == 0) { | |
1106 | dev_err(dev, "Failed to %sable the EC\n", | |
1107 | enable ? "en" : "dis"); | |
1108 | err = -EIO; | |
1109 | } else { | |
1110 | dev_info(dev, "EC %sabled\n", | |
1111 | enable ? "en" : "dis"); | |
1112 | } | |
1113 | ||
1114 | ACPI_FREE(obj); | |
1115 | return err; | |
1116 | } | |
1117 | ||
2c03d07a LT |
1118 | static int atk_enumerate_new_hwmon(struct atk_data *data) |
1119 | { | |
1120 | struct device *dev = &data->acpi_dev->dev; | |
2c03d07a LT |
1121 | union acpi_object *pack; |
1122 | int err; | |
1123 | int i; | |
1124 | ||
9e6eba61 LT |
1125 | err = atk_ec_present(data); |
1126 | if (err < 0) | |
1127 | return err; | |
1128 | if (err) { | |
1129 | err = atk_ec_enabled(data); | |
1130 | if (err < 0) | |
1131 | return err; | |
1132 | /* If the EC was disabled we will disable it again on unload */ | |
1133 | data->disable_ec = err; | |
1134 | ||
1135 | err = atk_ec_ctl(data, 1); | |
1136 | if (err) { | |
1137 | data->disable_ec = false; | |
1138 | return err; | |
1139 | } | |
1140 | } | |
1141 | ||
2c03d07a LT |
1142 | dev_dbg(dev, "Enumerating hwmon sensors\n"); |
1143 | ||
18e25555 LT |
1144 | pack = atk_ggrp(data, ATK_MUX_HWMON); |
1145 | if (IS_ERR(pack)) | |
1146 | return PTR_ERR(pack); | |
2c03d07a LT |
1147 | |
1148 | for (i = 0; i < pack->package.count; i++) { | |
1149 | union acpi_object *obj = &pack->package.elements[i]; | |
1150 | ||
1151 | atk_add_sensor(data, obj); | |
1152 | } | |
1153 | ||
1154 | err = data->voltage_count + data->temperature_count + data->fan_count; | |
1155 | ||
18e25555 | 1156 | ACPI_FREE(pack); |
2c03d07a LT |
1157 | return err; |
1158 | } | |
1159 | ||
3c60726d | 1160 | static int atk_init_attribute_groups(struct atk_data *data) |
2c03d07a | 1161 | { |
3c60726d | 1162 | struct device *dev = &data->acpi_dev->dev; |
2c03d07a | 1163 | struct atk_sensor_data *s; |
3c60726d BG |
1164 | struct attribute **attrs; |
1165 | int i = 0; | |
1166 | int len = (data->voltage_count + data->temperature_count | |
1167 | + data->fan_count) * 4 + 1; | |
1168 | ||
1169 | attrs = devm_kcalloc(dev, len, sizeof(struct attribute *), GFP_KERNEL); | |
1170 | if (!attrs) | |
1171 | return -ENOMEM; | |
2c03d07a LT |
1172 | |
1173 | list_for_each_entry(s, &data->sensor_list, list) { | |
3c60726d BG |
1174 | attrs[i++] = &s->input_attr.attr; |
1175 | attrs[i++] = &s->label_attr.attr; | |
1176 | attrs[i++] = &s->limit1_attr.attr; | |
1177 | attrs[i++] = &s->limit2_attr.attr; | |
2c03d07a LT |
1178 | } |
1179 | ||
3c60726d BG |
1180 | data->attr_group.attrs = attrs; |
1181 | data->attr_groups[0] = &data->attr_group; | |
2c03d07a | 1182 | |
3c60726d | 1183 | return 0; |
2c03d07a LT |
1184 | } |
1185 | ||
2c03d07a LT |
1186 | static int atk_register_hwmon(struct atk_data *data) |
1187 | { | |
1188 | struct device *dev = &data->acpi_dev->dev; | |
2c03d07a LT |
1189 | |
1190 | dev_dbg(dev, "registering hwmon device\n"); | |
3c60726d BG |
1191 | data->hwmon_dev = hwmon_device_register_with_groups(dev, "atk0110", |
1192 | data, | |
1193 | data->attr_groups); | |
2c03d07a | 1194 | |
2738b767 | 1195 | return PTR_ERR_OR_ZERO(data->hwmon_dev); |
2c03d07a LT |
1196 | } |
1197 | ||
8ba406be | 1198 | static int atk_probe_if(struct atk_data *data) |
2c03d07a LT |
1199 | { |
1200 | struct device *dev = &data->acpi_dev->dev; | |
1201 | acpi_handle ret; | |
1202 | acpi_status status; | |
8ba406be | 1203 | int err = 0; |
2c03d07a LT |
1204 | |
1205 | /* RTMP: read temperature */ | |
1206 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_TMP, &ret); | |
8ba406be LT |
1207 | if (ACPI_SUCCESS(status)) |
1208 | data->rtmp_handle = ret; | |
1209 | else | |
2c03d07a LT |
1210 | dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n", |
1211 | acpi_format_exception(status)); | |
2c03d07a LT |
1212 | |
1213 | /* RVLT: read voltage */ | |
1214 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_VLT, &ret); | |
8ba406be LT |
1215 | if (ACPI_SUCCESS(status)) |
1216 | data->rvlt_handle = ret; | |
1217 | else | |
2c03d07a LT |
1218 | dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n", |
1219 | acpi_format_exception(status)); | |
2c03d07a LT |
1220 | |
1221 | /* RFAN: read fan status */ | |
1222 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_FAN, &ret); | |
8ba406be LT |
1223 | if (ACPI_SUCCESS(status)) |
1224 | data->rfan_handle = ret; | |
1225 | else | |
2c03d07a LT |
1226 | dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n", |
1227 | acpi_format_exception(status)); | |
2c03d07a LT |
1228 | |
1229 | /* Enumeration */ | |
1230 | status = acpi_get_handle(data->atk_handle, METHOD_ENUMERATE, &ret); | |
8ba406be LT |
1231 | if (ACPI_SUCCESS(status)) |
1232 | data->enumerate_handle = ret; | |
1233 | else | |
2c03d07a LT |
1234 | dev_dbg(dev, "method " METHOD_ENUMERATE " not found: %s\n", |
1235 | acpi_format_exception(status)); | |
2c03d07a LT |
1236 | |
1237 | /* De-multiplexer (read) */ | |
1238 | status = acpi_get_handle(data->atk_handle, METHOD_READ, &ret); | |
8ba406be LT |
1239 | if (ACPI_SUCCESS(status)) |
1240 | data->read_handle = ret; | |
1241 | else | |
2c03d07a LT |
1242 | dev_dbg(dev, "method " METHOD_READ " not found: %s\n", |
1243 | acpi_format_exception(status)); | |
2c03d07a | 1244 | |
9e6eba61 LT |
1245 | /* De-multiplexer (write) */ |
1246 | status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret); | |
8ba406be LT |
1247 | if (ACPI_SUCCESS(status)) |
1248 | data->write_handle = ret; | |
1249 | else | |
1250 | dev_dbg(dev, "method " METHOD_WRITE " not found: %s\n", | |
9e6eba61 | 1251 | acpi_format_exception(status)); |
9e6eba61 | 1252 | |
75bdc936 GR |
1253 | /* |
1254 | * Check for hwmon methods: first check "old" style methods; note that | |
8ba406be LT |
1255 | * both may be present: in this case we stick to the old interface; |
1256 | * analysis of multiple DSDTs indicates that when both interfaces | |
1257 | * are present the new one (GGRP/GITM) is not functional. | |
1258 | */ | |
86ca33e8 LT |
1259 | if (new_if) |
1260 | dev_info(dev, "Overriding interface detection\n"); | |
c6e8ac04 FM |
1261 | if (data->rtmp_handle && |
1262 | data->rvlt_handle && data->rfan_handle && !new_if) | |
8ba406be LT |
1263 | data->old_interface = true; |
1264 | else if (data->enumerate_handle && data->read_handle && | |
1265 | data->write_handle) | |
1266 | data->old_interface = false; | |
1267 | else | |
1268 | err = -ENODEV; | |
1269 | ||
1270 | return err; | |
2c03d07a LT |
1271 | } |
1272 | ||
1273 | static int atk_add(struct acpi_device *device) | |
1274 | { | |
1275 | acpi_status ret; | |
1276 | int err; | |
1277 | struct acpi_buffer buf; | |
1278 | union acpi_object *obj; | |
1279 | struct atk_data *data; | |
1280 | ||
1281 | dev_dbg(&device->dev, "adding...\n"); | |
1282 | ||
c9bdf291 | 1283 | data = devm_kzalloc(&device->dev, sizeof(*data), GFP_KERNEL); |
2c03d07a LT |
1284 | if (!data) |
1285 | return -ENOMEM; | |
1286 | ||
1287 | data->acpi_dev = device; | |
1288 | data->atk_handle = device->handle; | |
1289 | INIT_LIST_HEAD(&data->sensor_list); | |
9e6eba61 | 1290 | data->disable_ec = false; |
2c03d07a LT |
1291 | |
1292 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1293 | ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL, | |
1294 | &buf, ACPI_TYPE_PACKAGE); | |
1295 | if (ret != AE_OK) { | |
1296 | dev_dbg(&device->dev, "atk: method MBIF not found\n"); | |
5542482b LT |
1297 | } else { |
1298 | obj = buf.pointer; | |
1299 | if (obj->package.count >= 2) { | |
1300 | union acpi_object *id = &obj->package.elements[1]; | |
1301 | if (id->type == ACPI_TYPE_STRING) | |
1302 | dev_dbg(&device->dev, "board ID = %s\n", | |
1303 | id->string.pointer); | |
1304 | } | |
1305 | ACPI_FREE(buf.pointer); | |
2c03d07a | 1306 | } |
2c03d07a | 1307 | |
8ba406be LT |
1308 | err = atk_probe_if(data); |
1309 | if (err) { | |
1310 | dev_err(&device->dev, "No usable hwmon interface detected\n"); | |
1311 | goto out; | |
2c03d07a LT |
1312 | } |
1313 | ||
8ba406be LT |
1314 | if (data->old_interface) { |
1315 | dev_dbg(&device->dev, "Using old hwmon interface\n"); | |
2c03d07a | 1316 | err = atk_enumerate_old_hwmon(data); |
8ba406be LT |
1317 | } else { |
1318 | dev_dbg(&device->dev, "Using new hwmon interface\n"); | |
2c03d07a | 1319 | err = atk_enumerate_new_hwmon(data); |
8ba406be | 1320 | } |
2c03d07a LT |
1321 | if (err < 0) |
1322 | goto out; | |
1323 | if (err == 0) { | |
1324 | dev_info(&device->dev, | |
1325 | "No usable sensor detected, bailing out\n"); | |
1326 | err = -ENODEV; | |
1327 | goto out; | |
1328 | } | |
1329 | ||
3c60726d BG |
1330 | err = atk_init_attribute_groups(data); |
1331 | if (err) | |
1332 | goto out; | |
2c03d07a LT |
1333 | err = atk_register_hwmon(data); |
1334 | if (err) | |
c9bdf291 | 1335 | goto out; |
2c03d07a | 1336 | |
7e5eab11 LT |
1337 | atk_debugfs_init(data); |
1338 | ||
2c03d07a LT |
1339 | device->driver_data = data; |
1340 | return 0; | |
2c03d07a | 1341 | out: |
9e6eba61 LT |
1342 | if (data->disable_ec) |
1343 | atk_ec_ctl(data, 0); | |
2c03d07a LT |
1344 | return err; |
1345 | } | |
1346 | ||
6c0eb5ba | 1347 | static void atk_remove(struct acpi_device *device) |
2c03d07a LT |
1348 | { |
1349 | struct atk_data *data = device->driver_data; | |
1350 | dev_dbg(&device->dev, "removing...\n"); | |
1351 | ||
1352 | device->driver_data = NULL; | |
1353 | ||
7e5eab11 LT |
1354 | atk_debugfs_cleanup(data); |
1355 | ||
2c03d07a LT |
1356 | hwmon_device_unregister(data->hwmon_dev); |
1357 | ||
9e6eba61 LT |
1358 | if (data->disable_ec) { |
1359 | if (atk_ec_ctl(data, 0)) | |
1360 | dev_err(&device->dev, "Failed to disable EC\n"); | |
1361 | } | |
2c03d07a LT |
1362 | } |
1363 | ||
1364 | static int __init atk0110_init(void) | |
1365 | { | |
1366 | int ret; | |
1367 | ||
70dd6bea JD |
1368 | /* Make sure it's safe to access the device through ACPI */ |
1369 | if (!acpi_resources_are_enforced()) { | |
ac561494 | 1370 | pr_err("Resources not safely usable due to acpi_enforce_resources kernel parameter\n"); |
70dd6bea JD |
1371 | return -EBUSY; |
1372 | } | |
1373 | ||
86ca33e8 LT |
1374 | if (dmi_check_system(atk_force_new_if)) |
1375 | new_if = true; | |
1376 | ||
2c03d07a LT |
1377 | ret = acpi_bus_register_driver(&atk_driver); |
1378 | if (ret) | |
ac561494 | 1379 | pr_info("acpi_bus_register_driver failed: %d\n", ret); |
2c03d07a LT |
1380 | |
1381 | return ret; | |
1382 | } | |
1383 | ||
1384 | static void __exit atk0110_exit(void) | |
1385 | { | |
1386 | acpi_bus_unregister_driver(&atk_driver); | |
1387 | } | |
1388 | ||
1389 | module_init(atk0110_init); | |
1390 | module_exit(atk0110_exit); | |
1391 | ||
1392 | MODULE_LICENSE("GPL"); |