Commit | Line | Data |
---|---|---|
2c03d07a LT |
1 | /* |
2 | * Copyright (C) 2007-2009 Luca Tettamanti <kronos.it@gmail.com> | |
3 | * | |
4 | * This file is released under the GPLv2 | |
5 | * See COPYING in the top level directory of the kernel tree. | |
6 | */ | |
7 | ||
ac561494 JP |
8 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
9 | ||
7e5eab11 | 10 | #include <linux/debugfs.h> |
2c03d07a LT |
11 | #include <linux/kernel.h> |
12 | #include <linux/hwmon.h> | |
13 | #include <linux/list.h> | |
14 | #include <linux/module.h> | |
5a0e3ad6 | 15 | #include <linux/slab.h> |
86ca33e8 | 16 | #include <linux/dmi.h> |
dcd8f392 | 17 | #include <linux/jiffies.h> |
2c03d07a LT |
18 | |
19 | #include <acpi/acpi.h> | |
20 | #include <acpi/acpixf.h> | |
21 | #include <acpi/acpi_drivers.h> | |
22 | #include <acpi/acpi_bus.h> | |
23 | ||
24 | ||
25 | #define ATK_HID "ATK0110" | |
26 | ||
86ca33e8 LT |
27 | static bool new_if; |
28 | module_param(new_if, bool, 0); | |
29 | MODULE_PARM_DESC(new_if, "Override detection heuristic and force the use of the new ATK0110 interface"); | |
30 | ||
31 | static const struct dmi_system_id __initconst atk_force_new_if[] = { | |
32 | { | |
33 | /* Old interface has broken MCH temp monitoring */ | |
34 | .ident = "Asus Sabertooth X58", | |
35 | .matches = { | |
36 | DMI_MATCH(DMI_BOARD_NAME, "SABERTOOTH X58") | |
37 | } | |
43ca6cb2 LT |
38 | }, { |
39 | /* Old interface reads the same sensor for fan0 and fan1 */ | |
40 | .ident = "Asus M5A78L", | |
41 | .matches = { | |
42 | DMI_MATCH(DMI_BOARD_NAME, "M5A78L") | |
43 | } | |
86ca33e8 LT |
44 | }, |
45 | { } | |
46 | }; | |
47 | ||
75bdc936 GR |
48 | /* |
49 | * Minimum time between readings, enforced in order to avoid | |
2c03d07a LT |
50 | * hogging the CPU. |
51 | */ | |
52 | #define CACHE_TIME HZ | |
53 | ||
54 | #define BOARD_ID "MBIF" | |
55 | #define METHOD_ENUMERATE "GGRP" | |
56 | #define METHOD_READ "GITM" | |
57 | #define METHOD_WRITE "SITM" | |
58 | #define METHOD_OLD_READ_TMP "RTMP" | |
59 | #define METHOD_OLD_READ_VLT "RVLT" | |
60 | #define METHOD_OLD_READ_FAN "RFAN" | |
61 | #define METHOD_OLD_ENUM_TMP "TSIF" | |
62 | #define METHOD_OLD_ENUM_VLT "VSIF" | |
63 | #define METHOD_OLD_ENUM_FAN "FSIF" | |
64 | ||
65 | #define ATK_MUX_HWMON 0x00000006ULL | |
9e6eba61 | 66 | #define ATK_MUX_MGMT 0x00000011ULL |
2c03d07a LT |
67 | |
68 | #define ATK_CLASS_MASK 0xff000000ULL | |
69 | #define ATK_CLASS_FREQ_CTL 0x03000000ULL | |
70 | #define ATK_CLASS_FAN_CTL 0x04000000ULL | |
71 | #define ATK_CLASS_HWMON 0x06000000ULL | |
9e6eba61 | 72 | #define ATK_CLASS_MGMT 0x11000000ULL |
2c03d07a LT |
73 | |
74 | #define ATK_TYPE_MASK 0x00ff0000ULL | |
75 | #define HWMON_TYPE_VOLT 0x00020000ULL | |
76 | #define HWMON_TYPE_TEMP 0x00030000ULL | |
77 | #define HWMON_TYPE_FAN 0x00040000ULL | |
78 | ||
9e6eba61 LT |
79 | #define ATK_ELEMENT_ID_MASK 0x0000ffffULL |
80 | ||
81 | #define ATK_EC_ID 0x11060004ULL | |
2c03d07a LT |
82 | |
83 | enum atk_pack_member { | |
84 | HWMON_PACK_FLAGS, | |
85 | HWMON_PACK_NAME, | |
86 | HWMON_PACK_LIMIT1, | |
87 | HWMON_PACK_LIMIT2, | |
88 | HWMON_PACK_ENABLE | |
89 | }; | |
90 | ||
91 | /* New package format */ | |
92 | #define _HWMON_NEW_PACK_SIZE 7 | |
93 | #define _HWMON_NEW_PACK_FLAGS 0 | |
94 | #define _HWMON_NEW_PACK_NAME 1 | |
95 | #define _HWMON_NEW_PACK_UNK1 2 | |
96 | #define _HWMON_NEW_PACK_UNK2 3 | |
97 | #define _HWMON_NEW_PACK_LIMIT1 4 | |
98 | #define _HWMON_NEW_PACK_LIMIT2 5 | |
99 | #define _HWMON_NEW_PACK_ENABLE 6 | |
100 | ||
101 | /* Old package format */ | |
102 | #define _HWMON_OLD_PACK_SIZE 5 | |
103 | #define _HWMON_OLD_PACK_FLAGS 0 | |
104 | #define _HWMON_OLD_PACK_NAME 1 | |
105 | #define _HWMON_OLD_PACK_LIMIT1 2 | |
106 | #define _HWMON_OLD_PACK_LIMIT2 3 | |
107 | #define _HWMON_OLD_PACK_ENABLE 4 | |
108 | ||
109 | ||
110 | struct atk_data { | |
111 | struct device *hwmon_dev; | |
112 | acpi_handle atk_handle; | |
113 | struct acpi_device *acpi_dev; | |
114 | ||
115 | bool old_interface; | |
116 | ||
117 | /* old interface */ | |
118 | acpi_handle rtmp_handle; | |
119 | acpi_handle rvlt_handle; | |
120 | acpi_handle rfan_handle; | |
121 | /* new inteface */ | |
122 | acpi_handle enumerate_handle; | |
123 | acpi_handle read_handle; | |
9e6eba61 LT |
124 | acpi_handle write_handle; |
125 | ||
126 | bool disable_ec; | |
2c03d07a LT |
127 | |
128 | int voltage_count; | |
129 | int temperature_count; | |
130 | int fan_count; | |
131 | struct list_head sensor_list; | |
7e5eab11 LT |
132 | |
133 | struct { | |
134 | struct dentry *root; | |
135 | u32 id; | |
136 | } debugfs; | |
2c03d07a LT |
137 | }; |
138 | ||
139 | ||
140 | typedef ssize_t (*sysfs_show_func)(struct device *dev, | |
141 | struct device_attribute *attr, char *buf); | |
142 | ||
143 | static const struct acpi_device_id atk_ids[] = { | |
144 | {ATK_HID, 0}, | |
145 | {"", 0}, | |
146 | }; | |
147 | MODULE_DEVICE_TABLE(acpi, atk_ids); | |
148 | ||
149 | #define ATTR_NAME_SIZE 16 /* Worst case is "tempN_input" */ | |
150 | ||
151 | struct atk_sensor_data { | |
152 | struct list_head list; | |
153 | struct atk_data *data; | |
154 | struct device_attribute label_attr; | |
155 | struct device_attribute input_attr; | |
156 | struct device_attribute limit1_attr; | |
157 | struct device_attribute limit2_attr; | |
158 | char label_attr_name[ATTR_NAME_SIZE]; | |
159 | char input_attr_name[ATTR_NAME_SIZE]; | |
160 | char limit1_attr_name[ATTR_NAME_SIZE]; | |
161 | char limit2_attr_name[ATTR_NAME_SIZE]; | |
162 | u64 id; | |
163 | u64 type; | |
164 | u64 limit1; | |
165 | u64 limit2; | |
166 | u64 cached_value; | |
167 | unsigned long last_updated; /* in jiffies */ | |
168 | bool is_valid; | |
169 | char const *acpi_name; | |
170 | }; | |
171 | ||
75bdc936 GR |
172 | /* |
173 | * Return buffer format: | |
18e25555 LT |
174 | * [0-3] "value" is valid flag |
175 | * [4-7] value | |
176 | * [8- ] unknown stuff on newer mobos | |
177 | */ | |
178 | struct atk_acpi_ret_buffer { | |
179 | u32 flags; | |
180 | u32 value; | |
181 | u8 data[]; | |
182 | }; | |
183 | ||
184 | /* Input buffer used for GITM and SITM methods */ | |
185 | struct atk_acpi_input_buf { | |
186 | u32 id; | |
187 | u32 param1; | |
188 | u32 param2; | |
2c03d07a LT |
189 | }; |
190 | ||
191 | static int atk_add(struct acpi_device *device); | |
192 | static int atk_remove(struct acpi_device *device, int type); | |
193 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj); | |
194 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value); | |
195 | static void atk_free_sensors(struct atk_data *data); | |
196 | ||
197 | static struct acpi_driver atk_driver = { | |
198 | .name = ATK_HID, | |
199 | .class = "hwmon", | |
200 | .ids = atk_ids, | |
201 | .ops = { | |
202 | .add = atk_add, | |
203 | .remove = atk_remove, | |
204 | }, | |
205 | }; | |
206 | ||
207 | #define input_to_atk_sensor(attr) \ | |
208 | container_of(attr, struct atk_sensor_data, input_attr) | |
209 | ||
210 | #define label_to_atk_sensor(attr) \ | |
211 | container_of(attr, struct atk_sensor_data, label_attr) | |
212 | ||
213 | #define limit1_to_atk_sensor(attr) \ | |
214 | container_of(attr, struct atk_sensor_data, limit1_attr) | |
215 | ||
216 | #define limit2_to_atk_sensor(attr) \ | |
217 | container_of(attr, struct atk_sensor_data, limit2_attr) | |
218 | ||
219 | static ssize_t atk_input_show(struct device *dev, | |
220 | struct device_attribute *attr, char *buf) | |
221 | { | |
222 | struct atk_sensor_data *s = input_to_atk_sensor(attr); | |
223 | u64 value; | |
224 | int err; | |
225 | ||
226 | err = atk_read_value(s, &value); | |
227 | if (err) | |
228 | return err; | |
229 | ||
230 | if (s->type == HWMON_TYPE_TEMP) | |
231 | /* ACPI returns decidegree */ | |
232 | value *= 100; | |
233 | ||
234 | return sprintf(buf, "%llu\n", value); | |
235 | } | |
236 | ||
237 | static ssize_t atk_label_show(struct device *dev, | |
238 | struct device_attribute *attr, char *buf) | |
239 | { | |
240 | struct atk_sensor_data *s = label_to_atk_sensor(attr); | |
241 | ||
242 | return sprintf(buf, "%s\n", s->acpi_name); | |
243 | } | |
244 | ||
245 | static ssize_t atk_limit1_show(struct device *dev, | |
246 | struct device_attribute *attr, char *buf) | |
247 | { | |
248 | struct atk_sensor_data *s = limit1_to_atk_sensor(attr); | |
249 | u64 value = s->limit1; | |
250 | ||
251 | if (s->type == HWMON_TYPE_TEMP) | |
252 | value *= 100; | |
253 | ||
254 | return sprintf(buf, "%lld\n", value); | |
255 | } | |
256 | ||
257 | static ssize_t atk_limit2_show(struct device *dev, | |
258 | struct device_attribute *attr, char *buf) | |
259 | { | |
260 | struct atk_sensor_data *s = limit2_to_atk_sensor(attr); | |
261 | u64 value = s->limit2; | |
262 | ||
263 | if (s->type == HWMON_TYPE_TEMP) | |
264 | value *= 100; | |
265 | ||
266 | return sprintf(buf, "%lld\n", value); | |
267 | } | |
268 | ||
269 | static ssize_t atk_name_show(struct device *dev, | |
270 | struct device_attribute *attr, char *buf) | |
271 | { | |
272 | return sprintf(buf, "atk0110\n"); | |
273 | } | |
274 | static struct device_attribute atk_name_attr = | |
275 | __ATTR(name, 0444, atk_name_show, NULL); | |
276 | ||
277 | static void atk_init_attribute(struct device_attribute *attr, char *name, | |
278 | sysfs_show_func show) | |
279 | { | |
9a2d55be | 280 | sysfs_attr_init(&attr->attr); |
2c03d07a LT |
281 | attr->attr.name = name; |
282 | attr->attr.mode = 0444; | |
283 | attr->show = show; | |
284 | attr->store = NULL; | |
285 | } | |
286 | ||
287 | ||
288 | static union acpi_object *atk_get_pack_member(struct atk_data *data, | |
289 | union acpi_object *pack, | |
290 | enum atk_pack_member m) | |
291 | { | |
292 | bool old_if = data->old_interface; | |
293 | int offset; | |
294 | ||
295 | switch (m) { | |
296 | case HWMON_PACK_FLAGS: | |
297 | offset = old_if ? _HWMON_OLD_PACK_FLAGS : _HWMON_NEW_PACK_FLAGS; | |
298 | break; | |
299 | case HWMON_PACK_NAME: | |
300 | offset = old_if ? _HWMON_OLD_PACK_NAME : _HWMON_NEW_PACK_NAME; | |
301 | break; | |
302 | case HWMON_PACK_LIMIT1: | |
303 | offset = old_if ? _HWMON_OLD_PACK_LIMIT1 : | |
304 | _HWMON_NEW_PACK_LIMIT1; | |
305 | break; | |
306 | case HWMON_PACK_LIMIT2: | |
307 | offset = old_if ? _HWMON_OLD_PACK_LIMIT2 : | |
308 | _HWMON_NEW_PACK_LIMIT2; | |
309 | break; | |
310 | case HWMON_PACK_ENABLE: | |
311 | offset = old_if ? _HWMON_OLD_PACK_ENABLE : | |
312 | _HWMON_NEW_PACK_ENABLE; | |
313 | break; | |
314 | default: | |
315 | return NULL; | |
316 | } | |
317 | ||
318 | return &pack->package.elements[offset]; | |
319 | } | |
320 | ||
321 | ||
75bdc936 GR |
322 | /* |
323 | * New package format is: | |
2c03d07a LT |
324 | * - flag (int) |
325 | * class - used for de-muxing the request to the correct GITn | |
326 | * type (volt, temp, fan) | |
327 | * sensor id | | |
328 | * sensor id - used for de-muxing the request _inside_ the GITn | |
329 | * - name (str) | |
330 | * - unknown (int) | |
331 | * - unknown (int) | |
332 | * - limit1 (int) | |
333 | * - limit2 (int) | |
334 | * - enable (int) | |
335 | * | |
336 | * The old package has the same format but it's missing the two unknown fields. | |
337 | */ | |
338 | static int validate_hwmon_pack(struct atk_data *data, union acpi_object *obj) | |
339 | { | |
340 | struct device *dev = &data->acpi_dev->dev; | |
341 | union acpi_object *tmp; | |
342 | bool old_if = data->old_interface; | |
343 | int const expected_size = old_if ? _HWMON_OLD_PACK_SIZE : | |
344 | _HWMON_NEW_PACK_SIZE; | |
345 | ||
346 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
347 | dev_warn(dev, "Invalid type: %d\n", obj->type); | |
348 | return -EINVAL; | |
349 | } | |
350 | ||
351 | if (obj->package.count != expected_size) { | |
352 | dev_warn(dev, "Invalid package size: %d, expected: %d\n", | |
353 | obj->package.count, expected_size); | |
354 | return -EINVAL; | |
355 | } | |
356 | ||
357 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
358 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
359 | dev_warn(dev, "Invalid type (flag): %d\n", tmp->type); | |
360 | return -EINVAL; | |
361 | } | |
362 | ||
363 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
364 | if (tmp->type != ACPI_TYPE_STRING) { | |
365 | dev_warn(dev, "Invalid type (name): %d\n", tmp->type); | |
366 | return -EINVAL; | |
367 | } | |
368 | ||
369 | /* Don't check... we don't know what they're useful for anyway */ | |
370 | #if 0 | |
371 | tmp = &obj->package.elements[HWMON_PACK_UNK1]; | |
372 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
373 | dev_warn(dev, "Invalid type (unk1): %d\n", tmp->type); | |
374 | return -EINVAL; | |
375 | } | |
376 | ||
377 | tmp = &obj->package.elements[HWMON_PACK_UNK2]; | |
378 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
379 | dev_warn(dev, "Invalid type (unk2): %d\n", tmp->type); | |
380 | return -EINVAL; | |
381 | } | |
382 | #endif | |
383 | ||
384 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
385 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
386 | dev_warn(dev, "Invalid type (limit1): %d\n", tmp->type); | |
387 | return -EINVAL; | |
388 | } | |
389 | ||
390 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
391 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
392 | dev_warn(dev, "Invalid type (limit2): %d\n", tmp->type); | |
393 | return -EINVAL; | |
394 | } | |
395 | ||
396 | tmp = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
397 | if (tmp->type != ACPI_TYPE_INTEGER) { | |
398 | dev_warn(dev, "Invalid type (enable): %d\n", tmp->type); | |
399 | return -EINVAL; | |
400 | } | |
401 | ||
402 | atk_print_sensor(data, obj); | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
b9008708 | 407 | #ifdef DEBUG |
2c03d07a LT |
408 | static char const *atk_sensor_type(union acpi_object *flags) |
409 | { | |
410 | u64 type = flags->integer.value & ATK_TYPE_MASK; | |
411 | char const *what; | |
412 | ||
413 | switch (type) { | |
414 | case HWMON_TYPE_VOLT: | |
415 | what = "voltage"; | |
416 | break; | |
417 | case HWMON_TYPE_TEMP: | |
418 | what = "temperature"; | |
419 | break; | |
420 | case HWMON_TYPE_FAN: | |
421 | what = "fan"; | |
422 | break; | |
423 | default: | |
424 | what = "unknown"; | |
425 | break; | |
426 | } | |
427 | ||
428 | return what; | |
429 | } | |
b9008708 | 430 | #endif |
2c03d07a LT |
431 | |
432 | static void atk_print_sensor(struct atk_data *data, union acpi_object *obj) | |
433 | { | |
434 | #ifdef DEBUG | |
435 | struct device *dev = &data->acpi_dev->dev; | |
436 | union acpi_object *flags; | |
437 | union acpi_object *name; | |
438 | union acpi_object *limit1; | |
439 | union acpi_object *limit2; | |
440 | union acpi_object *enable; | |
441 | char const *what; | |
442 | ||
443 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
444 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
445 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
446 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
447 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
448 | ||
449 | what = atk_sensor_type(flags); | |
450 | ||
451 | dev_dbg(dev, "%s: %#llx %s [%llu-%llu] %s\n", what, | |
452 | flags->integer.value, | |
453 | name->string.pointer, | |
454 | limit1->integer.value, limit2->integer.value, | |
455 | enable->integer.value ? "enabled" : "disabled"); | |
456 | #endif | |
457 | } | |
458 | ||
459 | static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value) | |
460 | { | |
461 | struct atk_data *data = sensor->data; | |
462 | struct device *dev = &data->acpi_dev->dev; | |
463 | struct acpi_object_list params; | |
464 | union acpi_object id; | |
465 | acpi_status status; | |
466 | acpi_handle method; | |
467 | ||
468 | switch (sensor->type) { | |
469 | case HWMON_TYPE_VOLT: | |
470 | method = data->rvlt_handle; | |
471 | break; | |
472 | case HWMON_TYPE_TEMP: | |
473 | method = data->rtmp_handle; | |
474 | break; | |
475 | case HWMON_TYPE_FAN: | |
476 | method = data->rfan_handle; | |
477 | break; | |
478 | default: | |
479 | return -EINVAL; | |
480 | } | |
481 | ||
482 | id.type = ACPI_TYPE_INTEGER; | |
483 | id.integer.value = sensor->id; | |
484 | ||
485 | params.count = 1; | |
486 | params.pointer = &id; | |
487 | ||
488 | status = acpi_evaluate_integer(method, NULL, ¶ms, value); | |
489 | if (status != AE_OK) { | |
490 | dev_warn(dev, "%s: ACPI exception: %s\n", __func__, | |
491 | acpi_format_exception(status)); | |
492 | return -EIO; | |
493 | } | |
494 | ||
495 | return 0; | |
496 | } | |
497 | ||
18e25555 | 498 | static union acpi_object *atk_ggrp(struct atk_data *data, u16 mux) |
2c03d07a | 499 | { |
2c03d07a | 500 | struct device *dev = &data->acpi_dev->dev; |
18e25555 LT |
501 | struct acpi_buffer buf; |
502 | acpi_status ret; | |
2c03d07a | 503 | struct acpi_object_list params; |
2c03d07a | 504 | union acpi_object id; |
18e25555 | 505 | union acpi_object *pack; |
2c03d07a LT |
506 | |
507 | id.type = ACPI_TYPE_INTEGER; | |
18e25555 | 508 | id.integer.value = mux; |
2c03d07a LT |
509 | params.count = 1; |
510 | params.pointer = &id; | |
511 | ||
18e25555 LT |
512 | buf.length = ACPI_ALLOCATE_BUFFER; |
513 | ret = acpi_evaluate_object(data->enumerate_handle, NULL, ¶ms, &buf); | |
514 | if (ret != AE_OK) { | |
515 | dev_err(dev, "GGRP[%#x] ACPI exception: %s\n", mux, | |
516 | acpi_format_exception(ret)); | |
517 | return ERR_PTR(-EIO); | |
518 | } | |
519 | pack = buf.pointer; | |
520 | if (pack->type != ACPI_TYPE_PACKAGE) { | |
521 | /* Execution was successful, but the id was not found */ | |
522 | ACPI_FREE(pack); | |
523 | return ERR_PTR(-ENOENT); | |
524 | } | |
525 | ||
526 | if (pack->package.count < 1) { | |
527 | dev_err(dev, "GGRP[%#x] package is too small\n", mux); | |
528 | ACPI_FREE(pack); | |
529 | return ERR_PTR(-EIO); | |
530 | } | |
531 | return pack; | |
532 | } | |
2c03d07a | 533 | |
18e25555 LT |
534 | static union acpi_object *atk_gitm(struct atk_data *data, u64 id) |
535 | { | |
536 | struct device *dev = &data->acpi_dev->dev; | |
537 | struct atk_acpi_input_buf buf; | |
538 | union acpi_object tmp; | |
539 | struct acpi_object_list params; | |
540 | struct acpi_buffer ret; | |
541 | union acpi_object *obj; | |
542 | acpi_status status; | |
543 | ||
544 | buf.id = id; | |
545 | buf.param1 = 0; | |
546 | buf.param2 = 0; | |
547 | ||
548 | tmp.type = ACPI_TYPE_BUFFER; | |
549 | tmp.buffer.pointer = (u8 *)&buf; | |
550 | tmp.buffer.length = sizeof(buf); | |
551 | ||
552 | params.count = 1; | |
553 | params.pointer = (void *)&tmp; | |
554 | ||
555 | ret.length = ACPI_ALLOCATE_BUFFER; | |
2c03d07a LT |
556 | status = acpi_evaluate_object_typed(data->read_handle, NULL, ¶ms, |
557 | &ret, ACPI_TYPE_BUFFER); | |
558 | if (status != AE_OK) { | |
18e25555 | 559 | dev_warn(dev, "GITM[%#llx] ACPI exception: %s\n", id, |
2c03d07a | 560 | acpi_format_exception(status)); |
18e25555 | 561 | return ERR_PTR(-EIO); |
2c03d07a | 562 | } |
18e25555 LT |
563 | obj = ret.pointer; |
564 | ||
565 | /* Sanity check */ | |
566 | if (obj->buffer.length < 8) { | |
567 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
568 | obj->buffer.length); | |
569 | ACPI_FREE(obj); | |
570 | return ERR_PTR(-EIO); | |
571 | } | |
572 | return obj; | |
573 | } | |
2c03d07a | 574 | |
9e6eba61 LT |
575 | static union acpi_object *atk_sitm(struct atk_data *data, |
576 | struct atk_acpi_input_buf *buf) | |
577 | { | |
578 | struct device *dev = &data->acpi_dev->dev; | |
579 | struct acpi_object_list params; | |
580 | union acpi_object tmp; | |
581 | struct acpi_buffer ret; | |
582 | union acpi_object *obj; | |
583 | acpi_status status; | |
584 | ||
585 | tmp.type = ACPI_TYPE_BUFFER; | |
586 | tmp.buffer.pointer = (u8 *)buf; | |
587 | tmp.buffer.length = sizeof(*buf); | |
588 | ||
589 | params.count = 1; | |
590 | params.pointer = &tmp; | |
591 | ||
592 | ret.length = ACPI_ALLOCATE_BUFFER; | |
593 | status = acpi_evaluate_object_typed(data->write_handle, NULL, ¶ms, | |
594 | &ret, ACPI_TYPE_BUFFER); | |
595 | if (status != AE_OK) { | |
596 | dev_warn(dev, "SITM[%#x] ACPI exception: %s\n", buf->id, | |
597 | acpi_format_exception(status)); | |
598 | return ERR_PTR(-EIO); | |
599 | } | |
600 | obj = ret.pointer; | |
601 | ||
602 | /* Sanity check */ | |
603 | if (obj->buffer.length < 8) { | |
604 | dev_warn(dev, "Unexpected ASBF length: %u\n", | |
605 | obj->buffer.length); | |
606 | ACPI_FREE(obj); | |
607 | return ERR_PTR(-EIO); | |
608 | } | |
609 | return obj; | |
610 | } | |
611 | ||
18e25555 LT |
612 | static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value) |
613 | { | |
614 | struct atk_data *data = sensor->data; | |
615 | struct device *dev = &data->acpi_dev->dev; | |
616 | union acpi_object *obj; | |
617 | struct atk_acpi_ret_buffer *buf; | |
618 | int err = 0; | |
619 | ||
620 | obj = atk_gitm(data, sensor->id); | |
621 | if (IS_ERR(obj)) | |
622 | return PTR_ERR(obj); | |
623 | ||
624 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
625 | if (buf->flags == 0) { | |
75bdc936 GR |
626 | /* |
627 | * The reading is not valid, possible causes: | |
2c03d07a LT |
628 | * - sensor failure |
629 | * - enumeration was FUBAR (and we didn't notice) | |
630 | */ | |
18e25555 LT |
631 | dev_warn(dev, "Read failed, sensor = %#llx\n", sensor->id); |
632 | err = -EIO; | |
633 | goto out; | |
2c03d07a LT |
634 | } |
635 | ||
18e25555 LT |
636 | *value = buf->value; |
637 | out: | |
638 | ACPI_FREE(obj); | |
639 | return err; | |
2c03d07a LT |
640 | } |
641 | ||
642 | static int atk_read_value(struct atk_sensor_data *sensor, u64 *value) | |
643 | { | |
644 | int err; | |
645 | ||
646 | if (!sensor->is_valid || | |
647 | time_after(jiffies, sensor->last_updated + CACHE_TIME)) { | |
648 | if (sensor->data->old_interface) | |
649 | err = atk_read_value_old(sensor, value); | |
650 | else | |
651 | err = atk_read_value_new(sensor, value); | |
652 | ||
653 | sensor->is_valid = true; | |
654 | sensor->last_updated = jiffies; | |
655 | sensor->cached_value = *value; | |
656 | } else { | |
657 | *value = sensor->cached_value; | |
658 | err = 0; | |
659 | } | |
660 | ||
661 | return err; | |
662 | } | |
663 | ||
7e5eab11 LT |
664 | #ifdef CONFIG_DEBUG_FS |
665 | static int atk_debugfs_gitm_get(void *p, u64 *val) | |
666 | { | |
667 | struct atk_data *data = p; | |
668 | union acpi_object *ret; | |
669 | struct atk_acpi_ret_buffer *buf; | |
670 | int err = 0; | |
671 | ||
672 | if (!data->read_handle) | |
673 | return -ENODEV; | |
674 | ||
675 | if (!data->debugfs.id) | |
676 | return -EINVAL; | |
677 | ||
678 | ret = atk_gitm(data, data->debugfs.id); | |
679 | if (IS_ERR(ret)) | |
680 | return PTR_ERR(ret); | |
681 | ||
682 | buf = (struct atk_acpi_ret_buffer *)ret->buffer.pointer; | |
683 | if (buf->flags) | |
684 | *val = buf->value; | |
685 | else | |
686 | err = -EIO; | |
687 | ||
0b8e77f1 | 688 | ACPI_FREE(ret); |
7e5eab11 LT |
689 | return err; |
690 | } | |
691 | ||
692 | DEFINE_SIMPLE_ATTRIBUTE(atk_debugfs_gitm, | |
693 | atk_debugfs_gitm_get, | |
694 | NULL, | |
695 | "0x%08llx\n") | |
696 | ||
697 | static int atk_acpi_print(char *buf, size_t sz, union acpi_object *obj) | |
698 | { | |
699 | int ret = 0; | |
700 | ||
701 | switch (obj->type) { | |
702 | case ACPI_TYPE_INTEGER: | |
703 | ret = snprintf(buf, sz, "0x%08llx\n", obj->integer.value); | |
704 | break; | |
705 | case ACPI_TYPE_STRING: | |
706 | ret = snprintf(buf, sz, "%s\n", obj->string.pointer); | |
707 | break; | |
708 | } | |
709 | ||
710 | return ret; | |
711 | } | |
712 | ||
713 | static void atk_pack_print(char *buf, size_t sz, union acpi_object *pack) | |
714 | { | |
715 | int ret; | |
716 | int i; | |
717 | ||
718 | for (i = 0; i < pack->package.count; i++) { | |
719 | union acpi_object *obj = &pack->package.elements[i]; | |
720 | ||
721 | ret = atk_acpi_print(buf, sz, obj); | |
722 | if (ret >= sz) | |
723 | break; | |
724 | buf += ret; | |
725 | sz -= ret; | |
726 | } | |
727 | } | |
728 | ||
729 | static int atk_debugfs_ggrp_open(struct inode *inode, struct file *file) | |
730 | { | |
731 | struct atk_data *data = inode->i_private; | |
732 | char *buf = NULL; | |
733 | union acpi_object *ret; | |
734 | u8 cls; | |
735 | int i; | |
736 | ||
737 | if (!data->enumerate_handle) | |
738 | return -ENODEV; | |
739 | if (!data->debugfs.id) | |
740 | return -EINVAL; | |
741 | ||
742 | cls = (data->debugfs.id & 0xff000000) >> 24; | |
743 | ret = atk_ggrp(data, cls); | |
744 | if (IS_ERR(ret)) | |
745 | return PTR_ERR(ret); | |
746 | ||
747 | for (i = 0; i < ret->package.count; i++) { | |
748 | union acpi_object *pack = &ret->package.elements[i]; | |
749 | union acpi_object *id; | |
750 | ||
751 | if (pack->type != ACPI_TYPE_PACKAGE) | |
752 | continue; | |
753 | if (!pack->package.count) | |
754 | continue; | |
755 | id = &pack->package.elements[0]; | |
756 | if (id->integer.value == data->debugfs.id) { | |
757 | /* Print the package */ | |
758 | buf = kzalloc(512, GFP_KERNEL); | |
759 | if (!buf) { | |
760 | ACPI_FREE(ret); | |
761 | return -ENOMEM; | |
762 | } | |
763 | atk_pack_print(buf, 512, pack); | |
764 | break; | |
765 | } | |
766 | } | |
767 | ACPI_FREE(ret); | |
768 | ||
769 | if (!buf) | |
770 | return -EINVAL; | |
771 | ||
772 | file->private_data = buf; | |
773 | ||
774 | return nonseekable_open(inode, file); | |
775 | } | |
776 | ||
777 | static ssize_t atk_debugfs_ggrp_read(struct file *file, char __user *buf, | |
778 | size_t count, loff_t *pos) | |
779 | { | |
780 | char *str = file->private_data; | |
781 | size_t len = strlen(str); | |
782 | ||
783 | return simple_read_from_buffer(buf, count, pos, str, len); | |
784 | } | |
785 | ||
786 | static int atk_debugfs_ggrp_release(struct inode *inode, struct file *file) | |
787 | { | |
788 | kfree(file->private_data); | |
789 | return 0; | |
790 | } | |
791 | ||
792 | static const struct file_operations atk_debugfs_ggrp_fops = { | |
793 | .read = atk_debugfs_ggrp_read, | |
794 | .open = atk_debugfs_ggrp_open, | |
795 | .release = atk_debugfs_ggrp_release, | |
6038f373 | 796 | .llseek = no_llseek, |
7e5eab11 LT |
797 | }; |
798 | ||
799 | static void atk_debugfs_init(struct atk_data *data) | |
800 | { | |
801 | struct dentry *d; | |
802 | struct dentry *f; | |
803 | ||
804 | data->debugfs.id = 0; | |
805 | ||
806 | d = debugfs_create_dir("asus_atk0110", NULL); | |
807 | if (!d || IS_ERR(d)) | |
808 | return; | |
809 | ||
810 | f = debugfs_create_x32("id", S_IRUSR | S_IWUSR, d, &data->debugfs.id); | |
811 | if (!f || IS_ERR(f)) | |
812 | goto cleanup; | |
813 | ||
814 | f = debugfs_create_file("gitm", S_IRUSR, d, data, | |
815 | &atk_debugfs_gitm); | |
816 | if (!f || IS_ERR(f)) | |
817 | goto cleanup; | |
818 | ||
819 | f = debugfs_create_file("ggrp", S_IRUSR, d, data, | |
820 | &atk_debugfs_ggrp_fops); | |
821 | if (!f || IS_ERR(f)) | |
822 | goto cleanup; | |
823 | ||
824 | data->debugfs.root = d; | |
825 | ||
826 | return; | |
827 | cleanup: | |
828 | debugfs_remove_recursive(d); | |
829 | } | |
830 | ||
831 | static void atk_debugfs_cleanup(struct atk_data *data) | |
832 | { | |
833 | debugfs_remove_recursive(data->debugfs.root); | |
834 | } | |
835 | ||
836 | #else /* CONFIG_DEBUG_FS */ | |
837 | ||
838 | static void atk_debugfs_init(struct atk_data *data) | |
839 | { | |
840 | } | |
841 | ||
842 | static void atk_debugfs_cleanup(struct atk_data *data) | |
843 | { | |
844 | } | |
845 | #endif | |
846 | ||
2c03d07a LT |
847 | static int atk_add_sensor(struct atk_data *data, union acpi_object *obj) |
848 | { | |
849 | struct device *dev = &data->acpi_dev->dev; | |
850 | union acpi_object *flags; | |
851 | union acpi_object *name; | |
852 | union acpi_object *limit1; | |
853 | union acpi_object *limit2; | |
854 | union acpi_object *enable; | |
855 | struct atk_sensor_data *sensor; | |
856 | char const *base_name; | |
857 | char const *limit1_name; | |
858 | char const *limit2_name; | |
859 | u64 type; | |
860 | int err; | |
861 | int *num; | |
862 | int start; | |
863 | ||
864 | if (obj->type != ACPI_TYPE_PACKAGE) { | |
865 | /* wft is this? */ | |
866 | dev_warn(dev, "Unknown type for ACPI object: (%d)\n", | |
867 | obj->type); | |
868 | return -EINVAL; | |
869 | } | |
870 | ||
871 | err = validate_hwmon_pack(data, obj); | |
872 | if (err) | |
873 | return err; | |
874 | ||
875 | /* Ok, we have a valid hwmon package */ | |
876 | type = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS)->integer.value | |
877 | & ATK_TYPE_MASK; | |
878 | ||
879 | switch (type) { | |
880 | case HWMON_TYPE_VOLT: | |
881 | base_name = "in"; | |
882 | limit1_name = "min"; | |
883 | limit2_name = "max"; | |
884 | num = &data->voltage_count; | |
885 | start = 0; | |
886 | break; | |
887 | case HWMON_TYPE_TEMP: | |
888 | base_name = "temp"; | |
889 | limit1_name = "max"; | |
890 | limit2_name = "crit"; | |
891 | num = &data->temperature_count; | |
892 | start = 1; | |
893 | break; | |
894 | case HWMON_TYPE_FAN: | |
895 | base_name = "fan"; | |
896 | limit1_name = "min"; | |
897 | limit2_name = "max"; | |
898 | num = &data->fan_count; | |
899 | start = 1; | |
900 | break; | |
901 | default: | |
902 | dev_warn(dev, "Unknown sensor type: %#llx\n", type); | |
903 | return -EINVAL; | |
904 | } | |
905 | ||
906 | enable = atk_get_pack_member(data, obj, HWMON_PACK_ENABLE); | |
907 | if (!enable->integer.value) | |
908 | /* sensor is disabled */ | |
909 | return 0; | |
910 | ||
911 | flags = atk_get_pack_member(data, obj, HWMON_PACK_FLAGS); | |
912 | name = atk_get_pack_member(data, obj, HWMON_PACK_NAME); | |
913 | limit1 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT1); | |
914 | limit2 = atk_get_pack_member(data, obj, HWMON_PACK_LIMIT2); | |
915 | ||
916 | sensor = kzalloc(sizeof(*sensor), GFP_KERNEL); | |
917 | if (!sensor) | |
918 | return -ENOMEM; | |
919 | ||
920 | sensor->acpi_name = kstrdup(name->string.pointer, GFP_KERNEL); | |
921 | if (!sensor->acpi_name) { | |
922 | err = -ENOMEM; | |
923 | goto out; | |
924 | } | |
925 | ||
926 | INIT_LIST_HEAD(&sensor->list); | |
927 | sensor->type = type; | |
928 | sensor->data = data; | |
929 | sensor->id = flags->integer.value; | |
930 | sensor->limit1 = limit1->integer.value; | |
8d282497 LT |
931 | if (data->old_interface) |
932 | sensor->limit2 = limit2->integer.value; | |
933 | else | |
934 | /* The upper limit is expressed as delta from lower limit */ | |
935 | sensor->limit2 = sensor->limit1 + limit2->integer.value; | |
2c03d07a LT |
936 | |
937 | snprintf(sensor->input_attr_name, ATTR_NAME_SIZE, | |
938 | "%s%d_input", base_name, start + *num); | |
939 | atk_init_attribute(&sensor->input_attr, | |
940 | sensor->input_attr_name, | |
941 | atk_input_show); | |
942 | ||
943 | snprintf(sensor->label_attr_name, ATTR_NAME_SIZE, | |
944 | "%s%d_label", base_name, start + *num); | |
945 | atk_init_attribute(&sensor->label_attr, | |
946 | sensor->label_attr_name, | |
947 | atk_label_show); | |
948 | ||
949 | snprintf(sensor->limit1_attr_name, ATTR_NAME_SIZE, | |
950 | "%s%d_%s", base_name, start + *num, limit1_name); | |
951 | atk_init_attribute(&sensor->limit1_attr, | |
952 | sensor->limit1_attr_name, | |
953 | atk_limit1_show); | |
954 | ||
955 | snprintf(sensor->limit2_attr_name, ATTR_NAME_SIZE, | |
956 | "%s%d_%s", base_name, start + *num, limit2_name); | |
957 | atk_init_attribute(&sensor->limit2_attr, | |
958 | sensor->limit2_attr_name, | |
959 | atk_limit2_show); | |
960 | ||
961 | list_add(&sensor->list, &data->sensor_list); | |
962 | (*num)++; | |
963 | ||
964 | return 1; | |
965 | out: | |
2c03d07a LT |
966 | kfree(sensor); |
967 | return err; | |
968 | } | |
969 | ||
970 | static int atk_enumerate_old_hwmon(struct atk_data *data) | |
971 | { | |
972 | struct device *dev = &data->acpi_dev->dev; | |
973 | struct acpi_buffer buf; | |
974 | union acpi_object *pack; | |
975 | acpi_status status; | |
976 | int i, ret; | |
977 | int count = 0; | |
978 | ||
979 | /* Voltages */ | |
980 | buf.length = ACPI_ALLOCATE_BUFFER; | |
981 | status = acpi_evaluate_object_typed(data->atk_handle, | |
982 | METHOD_OLD_ENUM_VLT, NULL, &buf, ACPI_TYPE_PACKAGE); | |
983 | if (status != AE_OK) { | |
984 | dev_warn(dev, METHOD_OLD_ENUM_VLT ": ACPI exception: %s\n", | |
985 | acpi_format_exception(status)); | |
986 | ||
987 | return -ENODEV; | |
988 | } | |
989 | ||
990 | pack = buf.pointer; | |
991 | for (i = 1; i < pack->package.count; i++) { | |
992 | union acpi_object *obj = &pack->package.elements[i]; | |
993 | ||
994 | ret = atk_add_sensor(data, obj); | |
995 | if (ret > 0) | |
996 | count++; | |
997 | } | |
998 | ACPI_FREE(buf.pointer); | |
999 | ||
1000 | /* Temperatures */ | |
1001 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1002 | status = acpi_evaluate_object_typed(data->atk_handle, | |
1003 | METHOD_OLD_ENUM_TMP, NULL, &buf, ACPI_TYPE_PACKAGE); | |
1004 | if (status != AE_OK) { | |
1005 | dev_warn(dev, METHOD_OLD_ENUM_TMP ": ACPI exception: %s\n", | |
1006 | acpi_format_exception(status)); | |
1007 | ||
1008 | ret = -ENODEV; | |
1009 | goto cleanup; | |
1010 | } | |
1011 | ||
1012 | pack = buf.pointer; | |
1013 | for (i = 1; i < pack->package.count; i++) { | |
1014 | union acpi_object *obj = &pack->package.elements[i]; | |
1015 | ||
1016 | ret = atk_add_sensor(data, obj); | |
1017 | if (ret > 0) | |
1018 | count++; | |
1019 | } | |
1020 | ACPI_FREE(buf.pointer); | |
1021 | ||
1022 | /* Fans */ | |
1023 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1024 | status = acpi_evaluate_object_typed(data->atk_handle, | |
1025 | METHOD_OLD_ENUM_FAN, NULL, &buf, ACPI_TYPE_PACKAGE); | |
1026 | if (status != AE_OK) { | |
1027 | dev_warn(dev, METHOD_OLD_ENUM_FAN ": ACPI exception: %s\n", | |
1028 | acpi_format_exception(status)); | |
1029 | ||
1030 | ret = -ENODEV; | |
1031 | goto cleanup; | |
1032 | } | |
1033 | ||
1034 | pack = buf.pointer; | |
1035 | for (i = 1; i < pack->package.count; i++) { | |
1036 | union acpi_object *obj = &pack->package.elements[i]; | |
1037 | ||
1038 | ret = atk_add_sensor(data, obj); | |
1039 | if (ret > 0) | |
1040 | count++; | |
1041 | } | |
1042 | ACPI_FREE(buf.pointer); | |
1043 | ||
1044 | return count; | |
1045 | cleanup: | |
1046 | atk_free_sensors(data); | |
1047 | return ret; | |
1048 | } | |
1049 | ||
9e6eba61 LT |
1050 | static int atk_ec_present(struct atk_data *data) |
1051 | { | |
1052 | struct device *dev = &data->acpi_dev->dev; | |
1053 | union acpi_object *pack; | |
1054 | union acpi_object *ec; | |
1055 | int ret; | |
1056 | int i; | |
1057 | ||
1058 | pack = atk_ggrp(data, ATK_MUX_MGMT); | |
1059 | if (IS_ERR(pack)) { | |
1060 | if (PTR_ERR(pack) == -ENOENT) { | |
1061 | /* The MGMT class does not exists - that's ok */ | |
1062 | dev_dbg(dev, "Class %#llx not found\n", ATK_MUX_MGMT); | |
1063 | return 0; | |
1064 | } | |
1065 | return PTR_ERR(pack); | |
1066 | } | |
1067 | ||
1068 | /* Search the EC */ | |
1069 | ec = NULL; | |
1070 | for (i = 0; i < pack->package.count; i++) { | |
1071 | union acpi_object *obj = &pack->package.elements[i]; | |
1072 | union acpi_object *id; | |
1073 | ||
1074 | if (obj->type != ACPI_TYPE_PACKAGE) | |
1075 | continue; | |
1076 | ||
1077 | id = &obj->package.elements[0]; | |
1078 | if (id->type != ACPI_TYPE_INTEGER) | |
1079 | continue; | |
1080 | ||
1081 | if (id->integer.value == ATK_EC_ID) { | |
1082 | ec = obj; | |
1083 | break; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | ret = (ec != NULL); | |
1088 | if (!ret) | |
1089 | /* The system has no EC */ | |
1090 | dev_dbg(dev, "EC not found\n"); | |
1091 | ||
1092 | ACPI_FREE(pack); | |
1093 | return ret; | |
1094 | } | |
1095 | ||
1096 | static int atk_ec_enabled(struct atk_data *data) | |
1097 | { | |
1098 | struct device *dev = &data->acpi_dev->dev; | |
1099 | union acpi_object *obj; | |
1100 | struct atk_acpi_ret_buffer *buf; | |
1101 | int err; | |
1102 | ||
1103 | obj = atk_gitm(data, ATK_EC_ID); | |
1104 | if (IS_ERR(obj)) { | |
1105 | dev_err(dev, "Unable to query EC status\n"); | |
1106 | return PTR_ERR(obj); | |
1107 | } | |
1108 | buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1109 | ||
1110 | if (buf->flags == 0) { | |
1111 | dev_err(dev, "Unable to query EC status\n"); | |
1112 | err = -EIO; | |
1113 | } else { | |
1114 | err = (buf->value != 0); | |
1115 | dev_dbg(dev, "EC is %sabled\n", | |
1116 | err ? "en" : "dis"); | |
1117 | } | |
1118 | ||
1119 | ACPI_FREE(obj); | |
1120 | return err; | |
1121 | } | |
1122 | ||
1123 | static int atk_ec_ctl(struct atk_data *data, int enable) | |
1124 | { | |
1125 | struct device *dev = &data->acpi_dev->dev; | |
1126 | union acpi_object *obj; | |
1127 | struct atk_acpi_input_buf sitm; | |
1128 | struct atk_acpi_ret_buffer *ec_ret; | |
1129 | int err = 0; | |
1130 | ||
1131 | sitm.id = ATK_EC_ID; | |
1132 | sitm.param1 = enable; | |
1133 | sitm.param2 = 0; | |
1134 | ||
1135 | obj = atk_sitm(data, &sitm); | |
1136 | if (IS_ERR(obj)) { | |
1137 | dev_err(dev, "Failed to %sable the EC\n", | |
1138 | enable ? "en" : "dis"); | |
1139 | return PTR_ERR(obj); | |
1140 | } | |
1141 | ec_ret = (struct atk_acpi_ret_buffer *)obj->buffer.pointer; | |
1142 | if (ec_ret->flags == 0) { | |
1143 | dev_err(dev, "Failed to %sable the EC\n", | |
1144 | enable ? "en" : "dis"); | |
1145 | err = -EIO; | |
1146 | } else { | |
1147 | dev_info(dev, "EC %sabled\n", | |
1148 | enable ? "en" : "dis"); | |
1149 | } | |
1150 | ||
1151 | ACPI_FREE(obj); | |
1152 | return err; | |
1153 | } | |
1154 | ||
2c03d07a LT |
1155 | static int atk_enumerate_new_hwmon(struct atk_data *data) |
1156 | { | |
1157 | struct device *dev = &data->acpi_dev->dev; | |
2c03d07a LT |
1158 | union acpi_object *pack; |
1159 | int err; | |
1160 | int i; | |
1161 | ||
9e6eba61 LT |
1162 | err = atk_ec_present(data); |
1163 | if (err < 0) | |
1164 | return err; | |
1165 | if (err) { | |
1166 | err = atk_ec_enabled(data); | |
1167 | if (err < 0) | |
1168 | return err; | |
1169 | /* If the EC was disabled we will disable it again on unload */ | |
1170 | data->disable_ec = err; | |
1171 | ||
1172 | err = atk_ec_ctl(data, 1); | |
1173 | if (err) { | |
1174 | data->disable_ec = false; | |
1175 | return err; | |
1176 | } | |
1177 | } | |
1178 | ||
2c03d07a LT |
1179 | dev_dbg(dev, "Enumerating hwmon sensors\n"); |
1180 | ||
18e25555 LT |
1181 | pack = atk_ggrp(data, ATK_MUX_HWMON); |
1182 | if (IS_ERR(pack)) | |
1183 | return PTR_ERR(pack); | |
2c03d07a LT |
1184 | |
1185 | for (i = 0; i < pack->package.count; i++) { | |
1186 | union acpi_object *obj = &pack->package.elements[i]; | |
1187 | ||
1188 | atk_add_sensor(data, obj); | |
1189 | } | |
1190 | ||
1191 | err = data->voltage_count + data->temperature_count + data->fan_count; | |
1192 | ||
18e25555 | 1193 | ACPI_FREE(pack); |
2c03d07a LT |
1194 | return err; |
1195 | } | |
1196 | ||
1197 | static int atk_create_files(struct atk_data *data) | |
1198 | { | |
1199 | struct atk_sensor_data *s; | |
1200 | int err; | |
1201 | ||
1202 | list_for_each_entry(s, &data->sensor_list, list) { | |
1203 | err = device_create_file(data->hwmon_dev, &s->input_attr); | |
1204 | if (err) | |
1205 | return err; | |
1206 | err = device_create_file(data->hwmon_dev, &s->label_attr); | |
1207 | if (err) | |
1208 | return err; | |
1209 | err = device_create_file(data->hwmon_dev, &s->limit1_attr); | |
1210 | if (err) | |
1211 | return err; | |
1212 | err = device_create_file(data->hwmon_dev, &s->limit2_attr); | |
1213 | if (err) | |
1214 | return err; | |
1215 | } | |
1216 | ||
1217 | err = device_create_file(data->hwmon_dev, &atk_name_attr); | |
1218 | ||
1219 | return err; | |
1220 | } | |
1221 | ||
1222 | static void atk_remove_files(struct atk_data *data) | |
1223 | { | |
1224 | struct atk_sensor_data *s; | |
1225 | ||
1226 | list_for_each_entry(s, &data->sensor_list, list) { | |
1227 | device_remove_file(data->hwmon_dev, &s->input_attr); | |
1228 | device_remove_file(data->hwmon_dev, &s->label_attr); | |
1229 | device_remove_file(data->hwmon_dev, &s->limit1_attr); | |
1230 | device_remove_file(data->hwmon_dev, &s->limit2_attr); | |
1231 | } | |
1232 | device_remove_file(data->hwmon_dev, &atk_name_attr); | |
1233 | } | |
1234 | ||
1235 | static void atk_free_sensors(struct atk_data *data) | |
1236 | { | |
1237 | struct list_head *head = &data->sensor_list; | |
1238 | struct atk_sensor_data *s, *tmp; | |
1239 | ||
1240 | list_for_each_entry_safe(s, tmp, head, list) { | |
1241 | kfree(s->acpi_name); | |
1242 | kfree(s); | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | static int atk_register_hwmon(struct atk_data *data) | |
1247 | { | |
1248 | struct device *dev = &data->acpi_dev->dev; | |
1249 | int err; | |
1250 | ||
1251 | dev_dbg(dev, "registering hwmon device\n"); | |
1252 | data->hwmon_dev = hwmon_device_register(dev); | |
1253 | if (IS_ERR(data->hwmon_dev)) | |
1254 | return PTR_ERR(data->hwmon_dev); | |
1255 | ||
1256 | dev_dbg(dev, "populating sysfs directory\n"); | |
1257 | err = atk_create_files(data); | |
1258 | if (err) | |
1259 | goto remove; | |
1260 | ||
1261 | return 0; | |
1262 | remove: | |
1263 | /* Cleanup the registered files */ | |
1264 | atk_remove_files(data); | |
1265 | hwmon_device_unregister(data->hwmon_dev); | |
1266 | return err; | |
1267 | } | |
1268 | ||
8ba406be | 1269 | static int atk_probe_if(struct atk_data *data) |
2c03d07a LT |
1270 | { |
1271 | struct device *dev = &data->acpi_dev->dev; | |
1272 | acpi_handle ret; | |
1273 | acpi_status status; | |
8ba406be | 1274 | int err = 0; |
2c03d07a LT |
1275 | |
1276 | /* RTMP: read temperature */ | |
1277 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_TMP, &ret); | |
8ba406be LT |
1278 | if (ACPI_SUCCESS(status)) |
1279 | data->rtmp_handle = ret; | |
1280 | else | |
2c03d07a LT |
1281 | dev_dbg(dev, "method " METHOD_OLD_READ_TMP " not found: %s\n", |
1282 | acpi_format_exception(status)); | |
2c03d07a LT |
1283 | |
1284 | /* RVLT: read voltage */ | |
1285 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_VLT, &ret); | |
8ba406be LT |
1286 | if (ACPI_SUCCESS(status)) |
1287 | data->rvlt_handle = ret; | |
1288 | else | |
2c03d07a LT |
1289 | dev_dbg(dev, "method " METHOD_OLD_READ_VLT " not found: %s\n", |
1290 | acpi_format_exception(status)); | |
2c03d07a LT |
1291 | |
1292 | /* RFAN: read fan status */ | |
1293 | status = acpi_get_handle(data->atk_handle, METHOD_OLD_READ_FAN, &ret); | |
8ba406be LT |
1294 | if (ACPI_SUCCESS(status)) |
1295 | data->rfan_handle = ret; | |
1296 | else | |
2c03d07a LT |
1297 | dev_dbg(dev, "method " METHOD_OLD_READ_FAN " not found: %s\n", |
1298 | acpi_format_exception(status)); | |
2c03d07a LT |
1299 | |
1300 | /* Enumeration */ | |
1301 | status = acpi_get_handle(data->atk_handle, METHOD_ENUMERATE, &ret); | |
8ba406be LT |
1302 | if (ACPI_SUCCESS(status)) |
1303 | data->enumerate_handle = ret; | |
1304 | else | |
2c03d07a LT |
1305 | dev_dbg(dev, "method " METHOD_ENUMERATE " not found: %s\n", |
1306 | acpi_format_exception(status)); | |
2c03d07a LT |
1307 | |
1308 | /* De-multiplexer (read) */ | |
1309 | status = acpi_get_handle(data->atk_handle, METHOD_READ, &ret); | |
8ba406be LT |
1310 | if (ACPI_SUCCESS(status)) |
1311 | data->read_handle = ret; | |
1312 | else | |
2c03d07a LT |
1313 | dev_dbg(dev, "method " METHOD_READ " not found: %s\n", |
1314 | acpi_format_exception(status)); | |
2c03d07a | 1315 | |
9e6eba61 LT |
1316 | /* De-multiplexer (write) */ |
1317 | status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret); | |
8ba406be LT |
1318 | if (ACPI_SUCCESS(status)) |
1319 | data->write_handle = ret; | |
1320 | else | |
1321 | dev_dbg(dev, "method " METHOD_WRITE " not found: %s\n", | |
9e6eba61 | 1322 | acpi_format_exception(status)); |
9e6eba61 | 1323 | |
75bdc936 GR |
1324 | /* |
1325 | * Check for hwmon methods: first check "old" style methods; note that | |
8ba406be LT |
1326 | * both may be present: in this case we stick to the old interface; |
1327 | * analysis of multiple DSDTs indicates that when both interfaces | |
1328 | * are present the new one (GGRP/GITM) is not functional. | |
1329 | */ | |
86ca33e8 LT |
1330 | if (new_if) |
1331 | dev_info(dev, "Overriding interface detection\n"); | |
c6e8ac04 FM |
1332 | if (data->rtmp_handle && |
1333 | data->rvlt_handle && data->rfan_handle && !new_if) | |
8ba406be LT |
1334 | data->old_interface = true; |
1335 | else if (data->enumerate_handle && data->read_handle && | |
1336 | data->write_handle) | |
1337 | data->old_interface = false; | |
1338 | else | |
1339 | err = -ENODEV; | |
1340 | ||
1341 | return err; | |
2c03d07a LT |
1342 | } |
1343 | ||
1344 | static int atk_add(struct acpi_device *device) | |
1345 | { | |
1346 | acpi_status ret; | |
1347 | int err; | |
1348 | struct acpi_buffer buf; | |
1349 | union acpi_object *obj; | |
1350 | struct atk_data *data; | |
1351 | ||
1352 | dev_dbg(&device->dev, "adding...\n"); | |
1353 | ||
1354 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
1355 | if (!data) | |
1356 | return -ENOMEM; | |
1357 | ||
1358 | data->acpi_dev = device; | |
1359 | data->atk_handle = device->handle; | |
1360 | INIT_LIST_HEAD(&data->sensor_list); | |
9e6eba61 | 1361 | data->disable_ec = false; |
2c03d07a LT |
1362 | |
1363 | buf.length = ACPI_ALLOCATE_BUFFER; | |
1364 | ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL, | |
1365 | &buf, ACPI_TYPE_PACKAGE); | |
1366 | if (ret != AE_OK) { | |
1367 | dev_dbg(&device->dev, "atk: method MBIF not found\n"); | |
5542482b LT |
1368 | } else { |
1369 | obj = buf.pointer; | |
1370 | if (obj->package.count >= 2) { | |
1371 | union acpi_object *id = &obj->package.elements[1]; | |
1372 | if (id->type == ACPI_TYPE_STRING) | |
1373 | dev_dbg(&device->dev, "board ID = %s\n", | |
1374 | id->string.pointer); | |
1375 | } | |
1376 | ACPI_FREE(buf.pointer); | |
2c03d07a | 1377 | } |
2c03d07a | 1378 | |
8ba406be LT |
1379 | err = atk_probe_if(data); |
1380 | if (err) { | |
1381 | dev_err(&device->dev, "No usable hwmon interface detected\n"); | |
1382 | goto out; | |
2c03d07a LT |
1383 | } |
1384 | ||
8ba406be LT |
1385 | if (data->old_interface) { |
1386 | dev_dbg(&device->dev, "Using old hwmon interface\n"); | |
2c03d07a | 1387 | err = atk_enumerate_old_hwmon(data); |
8ba406be LT |
1388 | } else { |
1389 | dev_dbg(&device->dev, "Using new hwmon interface\n"); | |
2c03d07a | 1390 | err = atk_enumerate_new_hwmon(data); |
8ba406be | 1391 | } |
2c03d07a LT |
1392 | if (err < 0) |
1393 | goto out; | |
1394 | if (err == 0) { | |
1395 | dev_info(&device->dev, | |
1396 | "No usable sensor detected, bailing out\n"); | |
1397 | err = -ENODEV; | |
1398 | goto out; | |
1399 | } | |
1400 | ||
1401 | err = atk_register_hwmon(data); | |
1402 | if (err) | |
1403 | goto cleanup; | |
1404 | ||
7e5eab11 LT |
1405 | atk_debugfs_init(data); |
1406 | ||
2c03d07a LT |
1407 | device->driver_data = data; |
1408 | return 0; | |
1409 | cleanup: | |
1410 | atk_free_sensors(data); | |
1411 | out: | |
9e6eba61 LT |
1412 | if (data->disable_ec) |
1413 | atk_ec_ctl(data, 0); | |
2c03d07a LT |
1414 | kfree(data); |
1415 | return err; | |
1416 | } | |
1417 | ||
1418 | static int atk_remove(struct acpi_device *device, int type) | |
1419 | { | |
1420 | struct atk_data *data = device->driver_data; | |
1421 | dev_dbg(&device->dev, "removing...\n"); | |
1422 | ||
1423 | device->driver_data = NULL; | |
1424 | ||
7e5eab11 LT |
1425 | atk_debugfs_cleanup(data); |
1426 | ||
2c03d07a LT |
1427 | atk_remove_files(data); |
1428 | atk_free_sensors(data); | |
1429 | hwmon_device_unregister(data->hwmon_dev); | |
1430 | ||
9e6eba61 LT |
1431 | if (data->disable_ec) { |
1432 | if (atk_ec_ctl(data, 0)) | |
1433 | dev_err(&device->dev, "Failed to disable EC\n"); | |
1434 | } | |
1435 | ||
2c03d07a LT |
1436 | kfree(data); |
1437 | ||
1438 | return 0; | |
1439 | } | |
1440 | ||
1441 | static int __init atk0110_init(void) | |
1442 | { | |
1443 | int ret; | |
1444 | ||
70dd6bea JD |
1445 | /* Make sure it's safe to access the device through ACPI */ |
1446 | if (!acpi_resources_are_enforced()) { | |
ac561494 | 1447 | pr_err("Resources not safely usable due to acpi_enforce_resources kernel parameter\n"); |
70dd6bea JD |
1448 | return -EBUSY; |
1449 | } | |
1450 | ||
86ca33e8 LT |
1451 | if (dmi_check_system(atk_force_new_if)) |
1452 | new_if = true; | |
1453 | ||
2c03d07a LT |
1454 | ret = acpi_bus_register_driver(&atk_driver); |
1455 | if (ret) | |
ac561494 | 1456 | pr_info("acpi_bus_register_driver failed: %d\n", ret); |
2c03d07a LT |
1457 | |
1458 | return ret; | |
1459 | } | |
1460 | ||
1461 | static void __exit atk0110_exit(void) | |
1462 | { | |
1463 | acpi_bus_unregister_driver(&atk_driver); | |
1464 | } | |
1465 | ||
1466 | module_init(atk0110_init); | |
1467 | module_exit(atk0110_exit); | |
1468 | ||
1469 | MODULE_LICENSE("GPL"); |