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2c03d07a LT |
1 | /* |
2 | * Copyright (C) 2007-2009 Luca Tettamanti <kronos.it@gmail.com> | |
3 | * | |
4 | * This file is released under the GPLv2 | |
5 | * See COPYING in the top level directory of the kernel tree. | |
6 | */ | |
7 | ||
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; | |
7e5eab11 LT |
128 | |
129 | struct { | |
130 | struct dentry *root; | |
131 | u32 id; | |
132 | } debugfs; | |
2c03d07a LT |
133 | }; |
134 | ||
135 | ||
136 | typedef ssize_t (*sysfs_show_func)(struct device *dev, | |
137 | struct device_attribute *attr, char *buf); | |
138 | ||
139 | static const struct acpi_device_id atk_ids[] = { | |
140 | {ATK_HID, 0}, | |
141 | {"", 0}, | |
142 | }; | |
143 | MODULE_DEVICE_TABLE(acpi, atk_ids); | |
144 | ||
145 | #define ATTR_NAME_SIZE 16 /* Worst case is "tempN_input" */ | |
146 | ||
147 | struct atk_sensor_data { | |
148 | struct list_head list; | |
149 | struct atk_data *data; | |
150 | struct device_attribute label_attr; | |
151 | struct device_attribute input_attr; | |
152 | struct device_attribute limit1_attr; | |
153 | struct device_attribute limit2_attr; | |
154 | char label_attr_name[ATTR_NAME_SIZE]; | |
155 | char input_attr_name[ATTR_NAME_SIZE]; | |
156 | char limit1_attr_name[ATTR_NAME_SIZE]; | |
157 | char limit2_attr_name[ATTR_NAME_SIZE]; | |
158 | u64 id; | |
159 | u64 type; | |
160 | u64 limit1; | |
161 | u64 limit2; | |
162 | u64 cached_value; | |
163 | unsigned long last_updated; /* in jiffies */ | |
164 | bool is_valid; | |
165 | char const *acpi_name; | |
166 | }; | |
167 | ||
75bdc936 GR |
168 | /* |
169 | * Return buffer format: | |
18e25555 LT |
170 | * [0-3] "value" is valid flag |
171 | * [4-7] value | |
172 | * [8- ] unknown stuff on newer mobos | |
173 | */ | |
174 | struct atk_acpi_ret_buffer { | |
175 | u32 flags; | |
176 | u32 value; | |
177 | u8 data[]; | |
178 | }; | |
179 | ||
180 | /* Input buffer used for GITM and SITM methods */ | |
181 | struct atk_acpi_input_buf { | |
182 | u32 id; | |
183 | u32 param1; | |
184 | u32 param2; | |
2c03d07a LT |
185 | }; |
186 | ||
187 | static int atk_add(struct acpi_device *device); | |
51fac838 | 188 | static int atk_remove(struct acpi_device *device); |
2c03d07a LT |
189 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj); |
190 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value); | |
191 | static void atk_free_sensors(struct atk_data *data); | |
192 | ||
193 | static struct acpi_driver atk_driver = { | |
194 | .name = ATK_HID, | |
195 | .class = "hwmon", | |
196 | .ids = atk_ids, | |
197 | .ops = { | |
198 | .add = atk_add, | |
199 | .remove = atk_remove, | |
200 | }, | |
201 | }; | |
202 | ||
203 | #define input_to_atk_sensor(attr) \ | |
204 | container_of(attr, struct atk_sensor_data, input_attr) | |
205 | ||
206 | #define label_to_atk_sensor(attr) \ | |
207 | container_of(attr, struct atk_sensor_data, label_attr) | |
208 | ||
209 | #define limit1_to_atk_sensor(attr) \ | |
210 | container_of(attr, struct atk_sensor_data, limit1_attr) | |
211 | ||
212 | #define limit2_to_atk_sensor(attr) \ | |
213 | container_of(attr, struct atk_sensor_data, limit2_attr) | |
214 | ||
215 | static ssize_t atk_input_show(struct device *dev, | |
216 | struct device_attribute *attr, char *buf) | |
217 | { | |
218 | struct atk_sensor_data *s = input_to_atk_sensor(attr); | |
219 | u64 value; | |
220 | int err; | |
221 | ||
222 | err = atk_read_value(s, &value); | |
223 | if (err) | |
224 | return err; | |
225 | ||
226 | if (s->type == HWMON_TYPE_TEMP) | |
227 | /* ACPI returns decidegree */ | |
228 | value *= 100; | |
229 | ||
230 | return sprintf(buf, "%llu\n", value); | |
231 | } | |
232 | ||
233 | static ssize_t atk_label_show(struct device *dev, | |
234 | struct device_attribute *attr, char *buf) | |
235 | { | |
236 | struct atk_sensor_data *s = label_to_atk_sensor(attr); | |
237 | ||
238 | return sprintf(buf, "%s\n", s->acpi_name); | |
239 | } | |
240 | ||
241 | static ssize_t atk_limit1_show(struct device *dev, | |
242 | struct device_attribute *attr, char *buf) | |
243 | { | |
244 | struct atk_sensor_data *s = limit1_to_atk_sensor(attr); | |
245 | u64 value = s->limit1; | |
246 | ||
247 | if (s->type == HWMON_TYPE_TEMP) | |
248 | value *= 100; | |
249 | ||
250 | return sprintf(buf, "%lld\n", value); | |
251 | } | |
252 | ||
253 | static ssize_t atk_limit2_show(struct device *dev, | |
254 | struct device_attribute *attr, char *buf) | |
255 | { | |
256 | struct atk_sensor_data *s = limit2_to_atk_sensor(attr); | |
257 | u64 value = s->limit2; | |
258 | ||
259 | if (s->type == HWMON_TYPE_TEMP) | |
260 | value *= 100; | |
261 | ||
262 | return sprintf(buf, "%lld\n", value); | |
263 | } | |
264 | ||
265 | static ssize_t atk_name_show(struct device *dev, | |
266 | struct device_attribute *attr, char *buf) | |
267 | { | |
268 | return sprintf(buf, "atk0110\n"); | |
269 | } | |
270 | static struct device_attribute atk_name_attr = | |
271 | __ATTR(name, 0444, atk_name_show, NULL); | |
272 | ||
273 | static void atk_init_attribute(struct device_attribute *attr, char *name, | |
274 | sysfs_show_func show) | |
275 | { | |
9a2d55be | 276 | sysfs_attr_init(&attr->attr); |
2c03d07a LT |
277 | attr->attr.name = name; |
278 | attr->attr.mode = 0444; | |
279 | attr->show = show; | |
280 | attr->store = NULL; | |
281 | } | |
282 | ||
283 | ||
284 | static union acpi_object *atk_get_pack_member(struct atk_data *data, | |
285 | union acpi_object *pack, | |
286 | enum atk_pack_member m) | |
287 | { | |
288 | bool old_if = data->old_interface; | |
289 | int offset; | |
290 | ||
291 | switch (m) { | |
292 | case HWMON_PACK_FLAGS: | |
293 | offset = old_if ? _HWMON_OLD_PACK_FLAGS : _HWMON_NEW_PACK_FLAGS; | |
294 | break; | |
295 | case HWMON_PACK_NAME: | |
296 | offset = old_if ? _HWMON_OLD_PACK_NAME : _HWMON_NEW_PACK_NAME; | |
297 | break; | |
298 | case HWMON_PACK_LIMIT1: | |
299 | offset = old_if ? _HWMON_OLD_PACK_LIMIT1 : | |
300 | _HWMON_NEW_PACK_LIMIT1; | |
301 | break; | |
302 | case HWMON_PACK_LIMIT2: | |
303 | offset = old_if ? _HWMON_OLD_PACK_LIMIT2 : | |
304 | _HWMON_NEW_PACK_LIMIT2; | |
305 | break; | |
306 | case HWMON_PACK_ENABLE: | |
307 | offset = old_if ? _HWMON_OLD_PACK_ENABLE : | |
308 | _HWMON_NEW_PACK_ENABLE; | |
309 | break; | |
310 | default: | |
311 | return NULL; | |
312 | } | |
313 | ||
314 | return &pack->package.elements[offset]; | |
315 | } | |
316 | ||
317 | ||
75bdc936 GR |
318 | /* |
319 | * New package format is: | |
2c03d07a LT |
320 | * - flag (int) |
321 | * class - used for de-muxing the request to the correct GITn | |
322 | * type (volt, temp, fan) | |
323 | * sensor id | | |
324 | * sensor id - used for de-muxing the request _inside_ the GITn | |
325 | * - name (str) | |
326 | * - unknown (int) | |
327 | * - unknown (int) | |
328 | * - limit1 (int) | |
329 | * - limit2 (int) | |
330 | * - enable (int) | |
331 | * | |
332 | * The old package has the same format but it's missing the two unknown fields. | |
333 | */ | |
334 | static int validate_hwmon_pack(struct atk_data *data, union acpi_object *obj) | |
335 | { | |
336 | struct device *dev = &data->acpi_dev->dev; | |
337 | union acpi_object *tmp; | |
338 | bool old_if = data->old_interface; | |
339 | int const expected_size = old_if ? _HWMON_OLD_PACK_SIZE : | |
340 | _HWMON_NEW_PACK_SIZE; | |
341 | ||
342 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
343 | dev_warn(dev, "Invalid type: %d\n", obj->type); | |
344 | return -EINVAL; | |
345 | } | |
346 | ||
347 | if (obj->package.count != expected_size) { | |
348 | dev_warn(dev, "Invalid package size: %d, expected: %d\n", | |
349 | obj->package.count, expected_size); | |
350 | return -EINVAL; | |
351 | } | |
352 | ||
353 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
354 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
355 | dev_warn(dev, "Invalid type (flag): %d\n", tmp->type); | |
356 | return -EINVAL; | |
357 | } | |
358 | ||
359 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
360 | if (tmp->type != ACPI_TYPE_STRING) { | |
361 | dev_warn(dev, "Invalid type (name): %d\n", tmp->type); | |
362 | return -EINVAL; | |
363 | } | |
364 | ||
365 | /* Don't check... we don't know what they're useful for anyway */ | |
366 | #if 0 | |
367 | tmp = &obj->package.elements[HWMON_PACK_UNK1]; | |
368 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
369 | dev_warn(dev, "Invalid type (unk1): %d\n", tmp->type); | |
370 | return -EINVAL; | |
371 | } | |
372 | ||
373 | tmp = &obj->package.elements[HWMON_PACK_UNK2]; | |
374 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
375 | dev_warn(dev, "Invalid type (unk2): %d\n", tmp->type); | |
376 | return -EINVAL; | |
377 | } | |
378 | #endif | |
379 | ||
380 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
381 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
382 | dev_warn(dev, "Invalid type (limit1): %d\n", tmp->type); | |
383 | return -EINVAL; | |
384 | } | |
385 | ||
386 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
387 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
388 | dev_warn(dev, "Invalid type (limit2): %d\n", tmp->type); | |
389 | return -EINVAL; | |
390 | } | |
391 | ||
392 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
393 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
394 | dev_warn(dev, "Invalid type (enable): %d\n", tmp->type); | |
395 | return -EINVAL; | |
396 | } | |
397 | ||
398 | atk_print_sensor(data, obj); | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
b9008708 | 403 | #ifdef DEBUG |
2c03d07a LT |
404 | static char const *atk_sensor_type(union acpi_object *flags) |
405 | { | |
406 | u64 type = flags->integer.value & ATK_TYPE_MASK; | |
407 | char const *what; | |
408 | ||
409 | switch (type) { | |
410 | case HWMON_TYPE_VOLT: | |
411 | what = "voltage"; | |
412 | break; | |
413 | case HWMON_TYPE_TEMP: | |
414 | what = "temperature"; | |
415 | break; | |
416 | case HWMON_TYPE_FAN: | |
417 | what = "fan"; | |
418 | break; | |
419 | default: | |
420 | what = "unknown"; | |
421 | break; | |
422 | } | |
423 | ||
424 | return what; | |
425 | } | |
b9008708 | 426 | #endif |
2c03d07a LT |
427 | |
428 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj) | |
429 | { | |
430 | #ifdef DEBUG | |
431 | struct device *dev = &data->acpi_dev->dev; | |
432 | union acpi_object *flags; | |
433 | union acpi_object *name; | |
434 | union acpi_object *limit1; | |
435 | union acpi_object *limit2; | |
436 | union acpi_object *enable; | |
437 | char const *what; | |
438 | ||
439 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
440 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
441 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
442 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
443 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
444 | ||
445 | what = atk_sensor_type(flags); | |
446 | ||
447 | dev_dbg(dev, "%s: %#llx %s [%llu-%llu] %s\n", what, | |
448 | flags->integer.value, | |
449 | name->string.pointer, | |
450 | limit1->integer.value, limit2->integer.value, | |
451 | enable->integer.value ? "enabled" : "disabled"); | |
452 | #endif | |
453 | } | |
454 | ||
455 | static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value) | |
456 | { | |
457 | struct atk_data *data = sensor->data; | |
458 | struct device *dev = &data->acpi_dev->dev; | |
459 | struct acpi_object_list params; | |
460 | union acpi_object id; | |
461 | acpi_status status; | |
462 | acpi_handle method; | |
463 | ||
464 | switch (sensor->type) { | |
465 | case HWMON_TYPE_VOLT: | |
466 | method = data->rvlt_handle; | |
467 | break; | |
468 | case HWMON_TYPE_TEMP: | |
469 | method = data->rtmp_handle; | |
470 | break; | |
471 | case HWMON_TYPE_FAN: | |
472 | method = data->rfan_handle; | |
473 | break; | |
474 | default: | |
475 | return -EINVAL; | |
476 | } | |
477 | ||
478 | id.type = ACPI_TYPE_INTEGER; | |
479 | id.integer.value = sensor->id; | |
480 | ||
481 | params.count = 1; | |
482 | params.pointer = &id; | |
483 | ||
484 | status = acpi_evaluate_integer(method, NULL, ¶ms, value); | |
485 | if (status != AE_OK) { | |
486 | dev_warn(dev, "%s: ACPI exception: %s\n", __func__, | |
487 | acpi_format_exception(status)); | |
488 | return -EIO; | |
489 | } | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
18e25555 | 494 | static union acpi_object *atk_ggrp(struct atk_data *data, u16 mux) |
2c03d07a | 495 | { |
2c03d07a | 496 | struct device *dev = &data->acpi_dev->dev; |
18e25555 LT |
497 | struct acpi_buffer buf; |
498 | acpi_status ret; | |
2c03d07a | 499 | struct acpi_object_list params; |
2c03d07a | 500 | union acpi_object id; |
18e25555 | 501 | union acpi_object *pack; |
2c03d07a LT |
502 | |
503 | id.type = ACPI_TYPE_INTEGER; | |
18e25555 | 504 | id.integer.value = mux; |
2c03d07a LT |
505 | params.count = 1; |
506 | params.pointer = &id; | |
507 | ||
18e25555 LT |
508 | buf.length = ACPI_ALLOCATE_BUFFER; |
509 | ret = acpi_evaluate_object(data->enumerate_handle, NULL, ¶ms, &buf); | |
510 | if (ret != AE_OK) { | |
511 | dev_err(dev, "GGRP[%#x] ACPI exception: %s\n", mux, | |
512 | acpi_format_exception(ret)); | |
513 | return ERR_PTR(-EIO); | |
514 | } | |
515 | pack = buf.pointer; | |
516 | if (pack->type != ACPI_TYPE_PACKAGE) { | |
517 | /* Execution was successful, but the id was not found */ | |
518 | ACPI_FREE(pack); | |
519 | return ERR_PTR(-ENOENT); | |
520 | } | |
521 | ||
522 | if (pack->package.count < 1) { | |
523 | dev_err(dev, "GGRP[%#x] package is too small\n", mux); | |
524 | ACPI_FREE(pack); | |
525 | return ERR_PTR(-EIO); | |
526 | } | |
527 | return pack; | |
528 | } | |
2c03d07a | 529 | |
18e25555 LT |
530 | static union acpi_object *atk_gitm(struct atk_data *data, u64 id) |
531 | { | |
532 | struct device *dev = &data->acpi_dev->dev; | |
533 | struct atk_acpi_input_buf buf; | |
534 | union acpi_object tmp; | |
535 | struct acpi_object_list params; | |
536 | struct acpi_buffer ret; | |
537 | union acpi_object *obj; | |
538 | acpi_status status; | |
539 | ||
540 | buf.id = id; | |
541 | buf.param1 = 0; | |
542 | buf.param2 = 0; | |
543 | ||
544 | tmp.type = ACPI_TYPE_BUFFER; | |
545 | tmp.buffer.pointer = (u8 *)&buf; | |
546 | tmp.buffer.length = sizeof(buf); | |
547 | ||
548 | params.count = 1; | |
549 | params.pointer = (void *)&tmp; | |
550 | ||
551 | ret.length = ACPI_ALLOCATE_BUFFER; | |
2c03d07a LT |
552 | status = acpi_evaluate_object_typed(data->read_handle, NULL, ¶ms, |
553 | &ret, ACPI_TYPE_BUFFER); | |
554 | if (status != AE_OK) { | |
18e25555 | 555 | dev_warn(dev, "GITM[%#llx] ACPI exception: %s\n", id, |
2c03d07a | 556 | acpi_format_exception(status)); |
18e25555 | 557 | return ERR_PTR(-EIO); |
2c03d07a | 558 | } |
18e25555 LT |
559 | obj = ret.pointer; |
560 | ||
561 | /* Sanity check */ | |
562 | if (obj->buffer.length < 8) { | |
563 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
564 | obj->buffer.length); | |
565 | ACPI_FREE(obj); | |
566 | return ERR_PTR(-EIO); | |
567 | } | |
568 | return obj; | |
569 | } | |
2c03d07a | 570 | |
9e6eba61 LT |
571 | static union acpi_object *atk_sitm(struct atk_data *data, |
572 | struct atk_acpi_input_buf *buf) | |
573 | { | |
574 | struct device *dev = &data->acpi_dev->dev; | |
575 | struct acpi_object_list params; | |
576 | union acpi_object tmp; | |
577 | struct acpi_buffer ret; | |
578 | union acpi_object *obj; | |
579 | acpi_status status; | |
580 | ||
581 | tmp.type = ACPI_TYPE_BUFFER; | |
582 | tmp.buffer.pointer = (u8 *)buf; | |
583 | tmp.buffer.length = sizeof(*buf); | |
584 | ||
585 | params.count = 1; | |
586 | params.pointer = &tmp; | |
587 | ||
588 | ret.length = ACPI_ALLOCATE_BUFFER; | |
589 | status = acpi_evaluate_object_typed(data->write_handle, NULL, ¶ms, | |
590 | &ret, ACPI_TYPE_BUFFER); | |
591 | if (status != AE_OK) { | |
592 | dev_warn(dev, "SITM[%#x] ACPI exception: %s\n", buf->id, | |
593 | acpi_format_exception(status)); | |
594 | return ERR_PTR(-EIO); | |
595 | } | |
596 | obj = ret.pointer; | |
597 | ||
598 | /* Sanity check */ | |
599 | if (obj->buffer.length < 8) { | |
600 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
601 | obj->buffer.length); | |
602 | ACPI_FREE(obj); | |
603 | return ERR_PTR(-EIO); | |
604 | } | |
605 | return obj; | |
606 | } | |
607 | ||
18e25555 LT |
608 | static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value) |
609 | { | |
610 | struct atk_data *data = sensor->data; | |
611 | struct device *dev = &data->acpi_dev->dev; | |
612 | union acpi_object *obj; | |
613 | struct atk_acpi_ret_buffer *buf; | |
614 | int err = 0; | |
615 | ||
616 | obj = atk_gitm(data, sensor->id); | |
617 | if (IS_ERR(obj)) | |
618 | return PTR_ERR(obj); | |
619 | ||
620 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
621 | if (buf->flags == 0) { | |
75bdc936 GR |
622 | /* |
623 | * The reading is not valid, possible causes: | |
2c03d07a LT |
624 | * - sensor failure |
625 | * - enumeration was FUBAR (and we didn't notice) | |
626 | */ | |
18e25555 LT |
627 | dev_warn(dev, "Read failed, sensor = %#llx\n", sensor->id); |
628 | err = -EIO; | |
629 | goto out; | |
2c03d07a LT |
630 | } |
631 | ||
18e25555 LT |
632 | *value = buf->value; |
633 | out: | |
634 | ACPI_FREE(obj); | |
635 | return err; | |
2c03d07a LT |
636 | } |
637 | ||
638 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value) | |
639 | { | |
640 | int err; | |
641 | ||
642 | if (!sensor->is_valid || | |
643 | time_after(jiffies, sensor->last_updated + CACHE_TIME)) { | |
644 | if (sensor->data->old_interface) | |
645 | err = atk_read_value_old(sensor, value); | |
646 | else | |
647 | err = atk_read_value_new(sensor, value); | |
648 | ||
a2125d02 AB |
649 | if (err) |
650 | return err; | |
651 | ||
2c03d07a LT |
652 | sensor->is_valid = true; |
653 | sensor->last_updated = jiffies; | |
654 | sensor->cached_value = *value; | |
655 | } else { | |
656 | *value = sensor->cached_value; | |
657 | err = 0; | |
658 | } | |
659 | ||
660 | return err; | |
661 | } | |
662 | ||
7e5eab11 LT |
663 | #ifdef CONFIG_DEBUG_FS |
664 | static int atk_debugfs_gitm_get(void *p, u64 *val) | |
665 | { | |
666 | struct atk_data *data = p; | |
667 | union acpi_object *ret; | |
668 | struct atk_acpi_ret_buffer *buf; | |
669 | int err = 0; | |
670 | ||
671 | if (!data->read_handle) | |
672 | return -ENODEV; | |
673 | ||
674 | if (!data->debugfs.id) | |
675 | return -EINVAL; | |
676 | ||
677 | ret = atk_gitm(data, data->debugfs.id); | |
678 | if (IS_ERR(ret)) | |
679 | return PTR_ERR(ret); | |
680 | ||
681 | buf = (struct atk_acpi_ret_buffer *)ret->buffer.pointer; | |
682 | if (buf->flags) | |
683 | *val = buf->value; | |
684 | else | |
685 | err = -EIO; | |
686 | ||
0b8e77f1 | 687 | ACPI_FREE(ret); |
7e5eab11 LT |
688 | return err; |
689 | } | |
690 | ||
691 | DEFINE_SIMPLE_ATTRIBUTE(atk_debugfs_gitm, | |
692 | atk_debugfs_gitm_get, | |
693 | NULL, | |
68be3029 | 694 | "0x%08llx\n"); |
7e5eab11 LT |
695 | |
696 | static int atk_acpi_print(char *buf, size_t sz, union acpi_object *obj) | |
697 | { | |
698 | int ret = 0; | |
699 | ||
700 | switch (obj->type) { | |
701 | case ACPI_TYPE_INTEGER: | |
702 | ret = snprintf(buf, sz, "0x%08llx\n", obj->integer.value); | |
703 | break; | |
704 | case ACPI_TYPE_STRING: | |
705 | ret = snprintf(buf, sz, "%s\n", obj->string.pointer); | |
706 | break; | |
707 | } | |
708 | ||
709 | return ret; | |
710 | } | |
711 | ||
712 | static void atk_pack_print(char *buf, size_t sz, union acpi_object *pack) | |
713 | { | |
714 | int ret; | |
715 | int i; | |
716 | ||
717 | for (i = 0; i < pack->package.count; i++) { | |
718 | union acpi_object *obj = &pack->package.elements[i]; | |
719 | ||
720 | ret = atk_acpi_print(buf, sz, obj); | |
721 | if (ret >= sz) | |
722 | break; | |
723 | buf += ret; | |
724 | sz -= ret; | |
725 | } | |
726 | } | |
727 | ||
728 | static int atk_debugfs_ggrp_open(struct inode *inode, struct file *file) | |
729 | { | |
730 | struct atk_data *data = inode->i_private; | |
731 | char *buf = NULL; | |
732 | union acpi_object *ret; | |
733 | u8 cls; | |
734 | int i; | |
735 | ||
736 | if (!data->enumerate_handle) | |
737 | return -ENODEV; | |
738 | if (!data->debugfs.id) | |
739 | return -EINVAL; | |
740 | ||
741 | cls = (data->debugfs.id & 0xff000000) >> 24; | |
742 | ret = atk_ggrp(data, cls); | |
743 | if (IS_ERR(ret)) | |
744 | return PTR_ERR(ret); | |
745 | ||
746 | for (i = 0; i < ret->package.count; i++) { | |
747 | union acpi_object *pack = &ret->package.elements[i]; | |
748 | union acpi_object *id; | |
749 | ||
750 | if (pack->type != ACPI_TYPE_PACKAGE) | |
751 | continue; | |
752 | if (!pack->package.count) | |
753 | continue; | |
754 | id = &pack->package.elements[0]; | |
755 | if (id->integer.value == data->debugfs.id) { | |
756 | /* Print the package */ | |
757 | buf = kzalloc(512, GFP_KERNEL); | |
758 | if (!buf) { | |
759 | ACPI_FREE(ret); | |
760 | return -ENOMEM; | |
761 | } | |
762 | atk_pack_print(buf, 512, pack); | |
763 | break; | |
764 | } | |
765 | } | |
766 | ACPI_FREE(ret); | |
767 | ||
768 | if (!buf) | |
769 | return -EINVAL; | |
770 | ||
771 | file->private_data = buf; | |
772 | ||
773 | return nonseekable_open(inode, file); | |
774 | } | |
775 | ||
776 | static ssize_t atk_debugfs_ggrp_read(struct file *file, char __user *buf, | |
777 | size_t count, loff_t *pos) | |
778 | { | |
779 | char *str = file->private_data; | |
780 | size_t len = strlen(str); | |
781 | ||
782 | return simple_read_from_buffer(buf, count, pos, str, len); | |
783 | } | |
784 | ||
785 | static int atk_debugfs_ggrp_release(struct inode *inode, struct file *file) | |
786 | { | |
787 | kfree(file->private_data); | |
788 | return 0; | |
789 | } | |
790 | ||
791 | static const struct file_operations atk_debugfs_ggrp_fops = { | |
792 | .read = atk_debugfs_ggrp_read, | |
793 | .open = atk_debugfs_ggrp_open, | |
794 | .release = atk_debugfs_ggrp_release, | |
6038f373 | 795 | .llseek = no_llseek, |
7e5eab11 LT |
796 | }; |
797 | ||
798 | static void atk_debugfs_init(struct atk_data *data) | |
799 | { | |
800 | struct dentry *d; | |
801 | struct dentry *f; | |
802 | ||
803 | data->debugfs.id = 0; | |
804 | ||
805 | d = debugfs_create_dir("asus_atk0110", NULL); | |
806 | if (!d || IS_ERR(d)) | |
807 | return; | |
808 | ||
809 | f = debugfs_create_x32("id", S_IRUSR | S_IWUSR, d, &data->debugfs.id); | |
810 | if (!f || IS_ERR(f)) | |
811 | goto cleanup; | |
812 | ||
813 | f = debugfs_create_file("gitm", S_IRUSR, d, data, | |
814 | &atk_debugfs_gitm); | |
815 | if (!f || IS_ERR(f)) | |
816 | goto cleanup; | |
817 | ||
818 | f = debugfs_create_file("ggrp", S_IRUSR, d, data, | |
819 | &atk_debugfs_ggrp_fops); | |
820 | if (!f || IS_ERR(f)) | |
821 | goto cleanup; | |
822 | ||
823 | data->debugfs.root = d; | |
824 | ||
825 | return; | |
826 | cleanup: | |
827 | debugfs_remove_recursive(d); | |
828 | } | |
829 | ||
830 | static void atk_debugfs_cleanup(struct atk_data *data) | |
831 | { | |
832 | debugfs_remove_recursive(data->debugfs.root); | |
833 | } | |
834 | ||
835 | #else /* CONFIG_DEBUG_FS */ | |
836 | ||
837 | static void atk_debugfs_init(struct atk_data *data) | |
838 | { | |
839 | } | |
840 | ||
841 | static void atk_debugfs_cleanup(struct atk_data *data) | |
842 | { | |
843 | } | |
844 | #endif | |
845 | ||
2c03d07a LT |
846 | static int atk_add_sensor(struct atk_data *data, union acpi_object *obj) |
847 | { | |
848 | struct device *dev = &data->acpi_dev->dev; | |
849 | union acpi_object *flags; | |
850 | union acpi_object *name; | |
851 | union acpi_object *limit1; | |
852 | union acpi_object *limit2; | |
853 | union acpi_object *enable; | |
854 | struct atk_sensor_data *sensor; | |
855 | char const *base_name; | |
856 | char const *limit1_name; | |
857 | char const *limit2_name; | |
858 | u64 type; | |
859 | int err; | |
860 | int *num; | |
861 | int start; | |
862 | ||
863 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
864 | /* wft is this? */ | |
865 | dev_warn(dev, "Unknown type for ACPI object: (%d)\n", | |
866 | obj->type); | |
867 | return -EINVAL; | |
868 | } | |
869 | ||
870 | err = validate_hwmon_pack(data, obj); | |
871 | if (err) | |
872 | return err; | |
873 | ||
874 | /* Ok, we have a valid hwmon package */ | |
875 | type = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS)->integer.value | |
876 | & ATK_TYPE_MASK; | |
877 | ||
878 | switch (type) { | |
879 | case HWMON_TYPE_VOLT: | |
880 | base_name = "in"; | |
881 | limit1_name = "min"; | |
882 | limit2_name = "max"; | |
883 | num = &data->voltage_count; | |
884 | start = 0; | |
885 | break; | |
886 | case HWMON_TYPE_TEMP: | |
887 | base_name = "temp"; | |
888 | limit1_name = "max"; | |
889 | limit2_name = "crit"; | |
890 | num = &data->temperature_count; | |
891 | start = 1; | |
892 | break; | |
893 | case HWMON_TYPE_FAN: | |
894 | base_name = "fan"; | |
895 | limit1_name = "min"; | |
896 | limit2_name = "max"; | |
897 | num = &data->fan_count; | |
898 | start = 1; | |
899 | break; | |
900 | default: | |
901 | dev_warn(dev, "Unknown sensor type: %#llx\n", type); | |
902 | return -EINVAL; | |
903 | } | |
904 | ||
905 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
906 | if (!enable->integer.value) | |
907 | /* sensor is disabled */ | |
908 | return 0; | |
909 | ||
910 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
911 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
912 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
913 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
914 | ||
915 | sensor = kzalloc(sizeof(*sensor), GFP_KERNEL); | |
916 | if (!sensor) | |
917 | return -ENOMEM; | |
918 | ||
919 | sensor->acpi_name = kstrdup(name->string.pointer, GFP_KERNEL); | |
920 | if (!sensor->acpi_name) { | |
921 | err = -ENOMEM; | |
922 | goto out; | |
923 | } | |
924 | ||
925 | INIT_LIST_HEAD(&sensor->list); | |
926 | sensor->type = type; | |
927 | sensor->data = data; | |
928 | sensor->id = flags->integer.value; | |
929 | sensor->limit1 = limit1->integer.value; | |
8d282497 LT |
930 | if (data->old_interface) |
931 | sensor->limit2 = limit2->integer.value; | |
932 | else | |
933 | /* The upper limit is expressed as delta from lower limit */ | |
934 | sensor->limit2 = sensor->limit1 + limit2->integer.value; | |
2c03d07a LT |
935 | |
936 | snprintf(sensor->input_attr_name, ATTR_NAME_SIZE, | |
937 | "%s%d_input", base_name, start + *num); | |
938 | atk_init_attribute(&sensor->input_attr, | |
939 | sensor->input_attr_name, | |
940 | atk_input_show); | |
941 | ||
942 | snprintf(sensor->label_attr_name, ATTR_NAME_SIZE, | |
943 | "%s%d_label", base_name, start + *num); | |
944 | atk_init_attribute(&sensor->label_attr, | |
945 | sensor->label_attr_name, | |
946 | atk_label_show); | |
947 | ||
948 | snprintf(sensor->limit1_attr_name, ATTR_NAME_SIZE, | |
949 | "%s%d_%s", base_name, start + *num, limit1_name); | |
950 | atk_init_attribute(&sensor->limit1_attr, | |
951 | sensor->limit1_attr_name, | |
952 | atk_limit1_show); | |
953 | ||
954 | snprintf(sensor->limit2_attr_name, ATTR_NAME_SIZE, | |
955 | "%s%d_%s", base_name, start + *num, limit2_name); | |
956 | atk_init_attribute(&sensor->limit2_attr, | |
957 | sensor->limit2_attr_name, | |
958 | atk_limit2_show); | |
959 | ||
960 | list_add(&sensor->list, &data->sensor_list); | |
961 | (*num)++; | |
962 | ||
963 | return 1; | |
964 | out: | |
2c03d07a LT |
965 | kfree(sensor); |
966 | return err; | |
967 | } | |
968 | ||
969 | static int atk_enumerate_old_hwmon(struct atk_data *data) | |
970 | { | |
971 | struct device *dev = &data->acpi_dev->dev; | |
972 | struct acpi_buffer buf; | |
973 | union acpi_object *pack; | |
974 | acpi_status status; | |
975 | int i, ret; | |
976 | int count = 0; | |
977 | ||
978 | /* Voltages */ | |
979 | buf.length = ACPI_ALLOCATE_BUFFER; | |
980 | status = acpi_evaluate_object_typed(data->atk_handle, | |
981 | METHOD_OLD_ENUM_VLT, NULL, &buf, ACPI_TYPE_PACKAGE); | |
982 | if (status != AE_OK) { | |
983 | dev_warn(dev, METHOD_OLD_ENUM_VLT ": ACPI exception: %s\n", | |
984 | acpi_format_exception(status)); | |
985 | ||
986 | return -ENODEV; | |
987 | } | |
988 | ||
989 | pack = buf.pointer; | |
990 | for (i = 1; i < pack->package.count; i++) { | |
991 | union acpi_object *obj = &pack->package.elements[i]; | |
992 | ||
993 | ret = atk_add_sensor(data, obj); | |
994 | if (ret > 0) | |
995 | count++; | |
996 | } | |
997 | ACPI_FREE(buf.pointer); | |
998 | ||
999 | /* Temperatures */ | |
1000 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1001 | status = acpi_evaluate_object_typed(data->atk_handle, | |
1002 | METHOD_OLD_ENUM_TMP, NULL, &buf, ACPI_TYPE_PACKAGE); | |
1003 | if (status != AE_OK) { | |
1004 | dev_warn(dev, METHOD_OLD_ENUM_TMP ": ACPI exception: %s\n", | |
1005 | acpi_format_exception(status)); | |
1006 | ||
1007 | ret = -ENODEV; | |
1008 | goto cleanup; | |
1009 | } | |
1010 | ||
1011 | pack = buf.pointer; | |
1012 | for (i = 1; i < pack->package.count; i++) { | |
1013 | union acpi_object *obj = &pack->package.elements[i]; | |
1014 | ||
1015 | ret = atk_add_sensor(data, obj); | |
1016 | if (ret > 0) | |
1017 | count++; | |
1018 | } | |
1019 | ACPI_FREE(buf.pointer); | |
1020 | ||
1021 | /* Fans */ | |
1022 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1023 | status = acpi_evaluate_object_typed(data->atk_handle, | |
1024 | METHOD_OLD_ENUM_FAN, NULL, &buf, ACPI_TYPE_PACKAGE); | |
1025 | if (status != AE_OK) { | |
1026 | dev_warn(dev, METHOD_OLD_ENUM_FAN ": ACPI exception: %s\n", | |
1027 | acpi_format_exception(status)); | |
1028 | ||
1029 | ret = -ENODEV; | |
1030 | goto cleanup; | |
1031 | } | |
1032 | ||
1033 | pack = buf.pointer; | |
1034 | for (i = 1; i < pack->package.count; i++) { | |
1035 | union acpi_object *obj = &pack->package.elements[i]; | |
1036 | ||
1037 | ret = atk_add_sensor(data, obj); | |
1038 | if (ret > 0) | |
1039 | count++; | |
1040 | } | |
1041 | ACPI_FREE(buf.pointer); | |
1042 | ||
1043 | return count; | |
1044 | cleanup: | |
1045 | atk_free_sensors(data); | |
1046 | return ret; | |
1047 | } | |
1048 | ||
9e6eba61 LT |
1049 | static int atk_ec_present(struct atk_data *data) |
1050 | { | |
1051 | struct device *dev = &data->acpi_dev->dev; | |
1052 | union acpi_object *pack; | |
1053 | union acpi_object *ec; | |
1054 | int ret; | |
1055 | int i; | |
1056 | ||
1057 | pack = atk_ggrp(data, ATK_MUX_MGMT); | |
1058 | if (IS_ERR(pack)) { | |
1059 | if (PTR_ERR(pack) == -ENOENT) { | |
1060 | /* The MGMT class does not exists - that's ok */ | |
1061 | dev_dbg(dev, "Class %#llx not found\n", ATK_MUX_MGMT); | |
1062 | return 0; | |
1063 | } | |
1064 | return PTR_ERR(pack); | |
1065 | } | |
1066 | ||
1067 | /* Search the EC */ | |
1068 | ec = NULL; | |
1069 | for (i = 0; i < pack->package.count; i++) { | |
1070 | union acpi_object *obj = &pack->package.elements[i]; | |
1071 | union acpi_object *id; | |
1072 | ||
1073 | if (obj->type != ACPI_TYPE_PACKAGE) | |
1074 | continue; | |
1075 | ||
1076 | id = &obj->package.elements[0]; | |
1077 | if (id->type != ACPI_TYPE_INTEGER) | |
1078 | continue; | |
1079 | ||
1080 | if (id->integer.value == ATK_EC_ID) { | |
1081 | ec = obj; | |
1082 | break; | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | ret = (ec != NULL); | |
1087 | if (!ret) | |
1088 | /* The system has no EC */ | |
1089 | dev_dbg(dev, "EC not found\n"); | |
1090 | ||
1091 | ACPI_FREE(pack); | |
1092 | return ret; | |
1093 | } | |
1094 | ||
1095 | static int atk_ec_enabled(struct atk_data *data) | |
1096 | { | |
1097 | struct device *dev = &data->acpi_dev->dev; | |
1098 | union acpi_object *obj; | |
1099 | struct atk_acpi_ret_buffer *buf; | |
1100 | int err; | |
1101 | ||
1102 | obj = atk_gitm(data, ATK_EC_ID); | |
1103 | if (IS_ERR(obj)) { | |
1104 | dev_err(dev, "Unable to query EC status\n"); | |
1105 | return PTR_ERR(obj); | |
1106 | } | |
1107 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1108 | ||
1109 | if (buf->flags == 0) { | |
1110 | dev_err(dev, "Unable to query EC status\n"); | |
1111 | err = -EIO; | |
1112 | } else { | |
1113 | err = (buf->value != 0); | |
1114 | dev_dbg(dev, "EC is %sabled\n", | |
1115 | err ? "en" : "dis"); | |
1116 | } | |
1117 | ||
1118 | ACPI_FREE(obj); | |
1119 | return err; | |
1120 | } | |
1121 | ||
1122 | static int atk_ec_ctl(struct atk_data *data, int enable) | |
1123 | { | |
1124 | struct device *dev = &data->acpi_dev->dev; | |
1125 | union acpi_object *obj; | |
1126 | struct atk_acpi_input_buf sitm; | |
1127 | struct atk_acpi_ret_buffer *ec_ret; | |
1128 | int err = 0; | |
1129 | ||
1130 | sitm.id = ATK_EC_ID; | |
1131 | sitm.param1 = enable; | |
1132 | sitm.param2 = 0; | |
1133 | ||
1134 | obj = atk_sitm(data, &sitm); | |
1135 | if (IS_ERR(obj)) { | |
1136 | dev_err(dev, "Failed to %sable the EC\n", | |
1137 | enable ? "en" : "dis"); | |
1138 | return PTR_ERR(obj); | |
1139 | } | |
1140 | ec_ret = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1141 | if (ec_ret->flags == 0) { | |
1142 | dev_err(dev, "Failed to %sable the EC\n", | |
1143 | enable ? "en" : "dis"); | |
1144 | err = -EIO; | |
1145 | } else { | |
1146 | dev_info(dev, "EC %sabled\n", | |
1147 | enable ? "en" : "dis"); | |
1148 | } | |
1149 | ||
1150 | ACPI_FREE(obj); | |
1151 | return err; | |
1152 | } | |
1153 | ||
2c03d07a LT |
1154 | static int atk_enumerate_new_hwmon(struct atk_data *data) |
1155 | { | |
1156 | struct device *dev = &data->acpi_dev->dev; | |
2c03d07a LT |
1157 | union acpi_object *pack; |
1158 | int err; | |
1159 | int i; | |
1160 | ||
9e6eba61 LT |
1161 | err = atk_ec_present(data); |
1162 | if (err < 0) | |
1163 | return err; | |
1164 | if (err) { | |
1165 | err = atk_ec_enabled(data); | |
1166 | if (err < 0) | |
1167 | return err; | |
1168 | /* If the EC was disabled we will disable it again on unload */ | |
1169 | data->disable_ec = err; | |
1170 | ||
1171 | err = atk_ec_ctl(data, 1); | |
1172 | if (err) { | |
1173 | data->disable_ec = false; | |
1174 | return err; | |
1175 | } | |
1176 | } | |
1177 | ||
2c03d07a LT |
1178 | dev_dbg(dev, "Enumerating hwmon sensors\n"); |
1179 | ||
18e25555 LT |
1180 | pack = atk_ggrp(data, ATK_MUX_HWMON); |
1181 | if (IS_ERR(pack)) | |
1182 | return PTR_ERR(pack); | |
2c03d07a LT |
1183 | |
1184 | for (i = 0; i < pack->package.count; i++) { | |
1185 | union acpi_object *obj = &pack->package.elements[i]; | |
1186 | ||
1187 | atk_add_sensor(data, obj); | |
1188 | } | |
1189 | ||
1190 | err = data->voltage_count + data->temperature_count + data->fan_count; | |
1191 | ||
18e25555 | 1192 | ACPI_FREE(pack); |
2c03d07a LT |
1193 | return err; |
1194 | } | |
1195 | ||
1196 | static int atk_create_files(struct atk_data *data) | |
1197 | { | |
1198 | struct atk_sensor_data *s; | |
1199 | int err; | |
1200 | ||
1201 | list_for_each_entry(s, &data->sensor_list, list) { | |
1202 | err = device_create_file(data->hwmon_dev, &s->input_attr); | |
1203 | if (err) | |
1204 | return err; | |
1205 | err = device_create_file(data->hwmon_dev, &s->label_attr); | |
1206 | if (err) | |
1207 | return err; | |
1208 | err = device_create_file(data->hwmon_dev, &s->limit1_attr); | |
1209 | if (err) | |
1210 | return err; | |
1211 | err = device_create_file(data->hwmon_dev, &s->limit2_attr); | |
1212 | if (err) | |
1213 | return err; | |
1214 | } | |
1215 | ||
1216 | err = device_create_file(data->hwmon_dev, &atk_name_attr); | |
1217 | ||
1218 | return err; | |
1219 | } | |
1220 | ||
1221 | static void atk_remove_files(struct atk_data *data) | |
1222 | { | |
1223 | struct atk_sensor_data *s; | |
1224 | ||
1225 | list_for_each_entry(s, &data->sensor_list, list) { | |
1226 | device_remove_file(data->hwmon_dev, &s->input_attr); | |
1227 | device_remove_file(data->hwmon_dev, &s->label_attr); | |
1228 | device_remove_file(data->hwmon_dev, &s->limit1_attr); | |
1229 | device_remove_file(data->hwmon_dev, &s->limit2_attr); | |
1230 | } | |
1231 | device_remove_file(data->hwmon_dev, &atk_name_attr); | |
1232 | } | |
1233 | ||
1234 | static void atk_free_sensors(struct atk_data *data) | |
1235 | { | |
1236 | struct list_head *head = &data->sensor_list; | |
1237 | struct atk_sensor_data *s, *tmp; | |
1238 | ||
1239 | list_for_each_entry_safe(s, tmp, head, list) { | |
1240 | kfree(s->acpi_name); | |
1241 | kfree(s); | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | static int atk_register_hwmon(struct atk_data *data) | |
1246 | { | |
1247 | struct device *dev = &data->acpi_dev->dev; | |
1248 | int err; | |
1249 | ||
1250 | dev_dbg(dev, "registering hwmon device\n"); | |
1251 | data->hwmon_dev = hwmon_device_register(dev); | |
1252 | if (IS_ERR(data->hwmon_dev)) | |
1253 | return PTR_ERR(data->hwmon_dev); | |
1254 | ||
1255 | dev_dbg(dev, "populating sysfs directory\n"); | |
1256 | err = atk_create_files(data); | |
1257 | if (err) | |
1258 | goto remove; | |
1259 | ||
1260 | return 0; | |
1261 | remove: | |
1262 | /* Cleanup the registered files */ | |
1263 | atk_remove_files(data); | |
1264 | hwmon_device_unregister(data->hwmon_dev); | |
1265 | return err; | |
1266 | } | |
1267 | ||
8ba406be | 1268 | static int atk_probe_if(struct atk_data *data) |
2c03d07a LT |
1269 | { |
1270 | struct device *dev = &data->acpi_dev->dev; | |
1271 | acpi_handle ret; | |
1272 | acpi_status status; | |
8ba406be | 1273 | int err = 0; |
2c03d07a LT |
1274 | |
1275 | /* RTMP: read temperature */ | |
1276 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_TMP, &ret); | |
8ba406be LT |
1277 | if (ACPI_SUCCESS(status)) |
1278 | data->rtmp_handle = ret; | |
1279 | else | |
2c03d07a LT |
1280 | dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n", |
1281 | acpi_format_exception(status)); | |
2c03d07a LT |
1282 | |
1283 | /* RVLT: read voltage */ | |
1284 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_VLT, &ret); | |
8ba406be LT |
1285 | if (ACPI_SUCCESS(status)) |
1286 | data->rvlt_handle = ret; | |
1287 | else | |
2c03d07a LT |
1288 | dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n", |
1289 | acpi_format_exception(status)); | |
2c03d07a LT |
1290 | |
1291 | /* RFAN: read fan status */ | |
1292 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_FAN, &ret); | |
8ba406be LT |
1293 | if (ACPI_SUCCESS(status)) |
1294 | data->rfan_handle = ret; | |
1295 | else | |
2c03d07a LT |
1296 | dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n", |
1297 | acpi_format_exception(status)); | |
2c03d07a LT |
1298 | |
1299 | /* Enumeration */ | |
1300 | status = acpi_get_handle(data->atk_handle, METHOD_ENUMERATE, &ret); | |
8ba406be LT |
1301 | if (ACPI_SUCCESS(status)) |
1302 | data->enumerate_handle = ret; | |
1303 | else | |
2c03d07a LT |
1304 | dev_dbg(dev, "method " METHOD_ENUMERATE " not found: %s\n", |
1305 | acpi_format_exception(status)); | |
2c03d07a LT |
1306 | |
1307 | /* De-multiplexer (read) */ | |
1308 | status = acpi_get_handle(data->atk_handle, METHOD_READ, &ret); | |
8ba406be LT |
1309 | if (ACPI_SUCCESS(status)) |
1310 | data->read_handle = ret; | |
1311 | else | |
2c03d07a LT |
1312 | dev_dbg(dev, "method " METHOD_READ " not found: %s\n", |
1313 | acpi_format_exception(status)); | |
2c03d07a | 1314 | |
9e6eba61 LT |
1315 | /* De-multiplexer (write) */ |
1316 | status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret); | |
8ba406be LT |
1317 | if (ACPI_SUCCESS(status)) |
1318 | data->write_handle = ret; | |
1319 | else | |
1320 | dev_dbg(dev, "method " METHOD_WRITE " not found: %s\n", | |
9e6eba61 | 1321 | acpi_format_exception(status)); |
9e6eba61 | 1322 | |
75bdc936 GR |
1323 | /* |
1324 | * Check for hwmon methods: first check "old" style methods; note that | |
8ba406be LT |
1325 | * both may be present: in this case we stick to the old interface; |
1326 | * analysis of multiple DSDTs indicates that when both interfaces | |
1327 | * are present the new one (GGRP/GITM) is not functional. | |
1328 | */ | |
86ca33e8 LT |
1329 | if (new_if) |
1330 | dev_info(dev, "Overriding interface detection\n"); | |
c6e8ac04 FM |
1331 | if (data->rtmp_handle && |
1332 | data->rvlt_handle && data->rfan_handle && !new_if) | |
8ba406be LT |
1333 | data->old_interface = true; |
1334 | else if (data->enumerate_handle && data->read_handle && | |
1335 | data->write_handle) | |
1336 | data->old_interface = false; | |
1337 | else | |
1338 | err = -ENODEV; | |
1339 | ||
1340 | return err; | |
2c03d07a LT |
1341 | } |
1342 | ||
1343 | static int atk_add(struct acpi_device *device) | |
1344 | { | |
1345 | acpi_status ret; | |
1346 | int err; | |
1347 | struct acpi_buffer buf; | |
1348 | union acpi_object *obj; | |
1349 | struct atk_data *data; | |
1350 | ||
1351 | dev_dbg(&device->dev, "adding...\n"); | |
1352 | ||
1353 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
1354 | if (!data) | |
1355 | return -ENOMEM; | |
1356 | ||
1357 | data->acpi_dev = device; | |
1358 | data->atk_handle = device->handle; | |
1359 | INIT_LIST_HEAD(&data->sensor_list); | |
9e6eba61 | 1360 | data->disable_ec = false; |
2c03d07a LT |
1361 | |
1362 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1363 | ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL, | |
1364 | &buf, ACPI_TYPE_PACKAGE); | |
1365 | if (ret != AE_OK) { | |
1366 | dev_dbg(&device->dev, "atk: method MBIF not found\n"); | |
5542482b LT |
1367 | } else { |
1368 | obj = buf.pointer; | |
1369 | if (obj->package.count >= 2) { | |
1370 | union acpi_object *id = &obj->package.elements[1]; | |
1371 | if (id->type == ACPI_TYPE_STRING) | |
1372 | dev_dbg(&device->dev, "board ID = %s\n", | |
1373 | id->string.pointer); | |
1374 | } | |
1375 | ACPI_FREE(buf.pointer); | |
2c03d07a | 1376 | } |
2c03d07a | 1377 | |
8ba406be LT |
1378 | err = atk_probe_if(data); |
1379 | if (err) { | |
1380 | dev_err(&device->dev, "No usable hwmon interface detected\n"); | |
1381 | goto out; | |
2c03d07a LT |
1382 | } |
1383 | ||
8ba406be LT |
1384 | if (data->old_interface) { |
1385 | dev_dbg(&device->dev, "Using old hwmon interface\n"); | |
2c03d07a | 1386 | err = atk_enumerate_old_hwmon(data); |
8ba406be LT |
1387 | } else { |
1388 | dev_dbg(&device->dev, "Using new hwmon interface\n"); | |
2c03d07a | 1389 | err = atk_enumerate_new_hwmon(data); |
8ba406be | 1390 | } |
2c03d07a LT |
1391 | if (err < 0) |
1392 | goto out; | |
1393 | if (err == 0) { | |
1394 | dev_info(&device->dev, | |
1395 | "No usable sensor detected, bailing out\n"); | |
1396 | err = -ENODEV; | |
1397 | goto out; | |
1398 | } | |
1399 | ||
1400 | err = atk_register_hwmon(data); | |
1401 | if (err) | |
1402 | goto cleanup; | |
1403 | ||
7e5eab11 LT |
1404 | atk_debugfs_init(data); |
1405 | ||
2c03d07a LT |
1406 | device->driver_data = data; |
1407 | return 0; | |
1408 | cleanup: | |
1409 | atk_free_sensors(data); | |
1410 | out: | |
9e6eba61 LT |
1411 | if (data->disable_ec) |
1412 | atk_ec_ctl(data, 0); | |
2c03d07a LT |
1413 | kfree(data); |
1414 | return err; | |
1415 | } | |
1416 | ||
51fac838 | 1417 | static int atk_remove(struct acpi_device *device) |
2c03d07a LT |
1418 | { |
1419 | struct atk_data *data = device->driver_data; | |
1420 | dev_dbg(&device->dev, "removing...\n"); | |
1421 | ||
1422 | device->driver_data = NULL; | |
1423 | ||
7e5eab11 LT |
1424 | atk_debugfs_cleanup(data); |
1425 | ||
2c03d07a LT |
1426 | atk_remove_files(data); |
1427 | atk_free_sensors(data); | |
1428 | hwmon_device_unregister(data->hwmon_dev); | |
1429 | ||
9e6eba61 LT |
1430 | if (data->disable_ec) { |
1431 | if (atk_ec_ctl(data, 0)) | |
1432 | dev_err(&device->dev, "Failed to disable EC\n"); | |
1433 | } | |
1434 | ||
2c03d07a LT |
1435 | kfree(data); |
1436 | ||
1437 | return 0; | |
1438 | } | |
1439 | ||
1440 | static int __init atk0110_init(void) | |
1441 | { | |
1442 | int ret; | |
1443 | ||
70dd6bea JD |
1444 | /* Make sure it's safe to access the device through ACPI */ |
1445 | if (!acpi_resources_are_enforced()) { | |
ac561494 | 1446 | pr_err("Resources not safely usable due to acpi_enforce_resources kernel parameter\n"); |
70dd6bea JD |
1447 | return -EBUSY; |
1448 | } | |
1449 | ||
86ca33e8 LT |
1450 | if (dmi_check_system(atk_force_new_if)) |
1451 | new_if = true; | |
1452 | ||
2c03d07a LT |
1453 | ret = acpi_bus_register_driver(&atk_driver); |
1454 | if (ret) | |
ac561494 | 1455 | pr_info("acpi_bus_register_driver failed: %d\n", ret); |
2c03d07a LT |
1456 | |
1457 | return ret; | |
1458 | } | |
1459 | ||
1460 | static void __exit atk0110_exit(void) | |
1461 | { | |
1462 | acpi_bus_unregister_driver(&atk_driver); | |
1463 | } | |
1464 | ||
1465 | module_init(atk0110_init); | |
1466 | module_exit(atk0110_exit); | |
1467 | ||
1468 | MODULE_LICENSE("GPL"); |