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Merge tag 'v3.10.104' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / acpi / sysfs.c
CommitLineData
1c8fce27
ZR		 1/*
2 * sysfs.c - ACPI sysfs interface to userspace.
3 */
4
5#include <linux/init.h>
6#include <linux/kernel.h>
7#include <linux/moduleparam.h>
8#include <acpi/acpi_drivers.h>
9
3f8055c3
RW		 10#include "internal.h"
11
1c8fce27
ZR		 12#define _COMPONENT ACPI_SYSTEM_COMPONENT
13ACPI_MODULE_NAME("sysfs");
14
15#define PREFIX "ACPI: "
16
17#ifdef CONFIG_ACPI_DEBUG
18/*
19 * ACPI debug sysfs I/F, including:
20 * /sys/modules/acpi/parameters/debug_layer
21 * /sys/modules/acpi/parameters/debug_level
22 * /sys/modules/acpi/parameters/trace_method_name
23 * /sys/modules/acpi/parameters/trace_state
24 * /sys/modules/acpi/parameters/trace_debug_layer
25 * /sys/modules/acpi/parameters/trace_debug_level
26 */
27
28struct acpi_dlayer {
29 const char *name;
30 unsigned long value;
31};
32struct acpi_dlevel {
33 const char *name;
34 unsigned long value;
35};
36#define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
37
38static const struct acpi_dlayer acpi_debug_layers[] = {
39 ACPI_DEBUG_INIT(ACPI_UTILITIES),
40 ACPI_DEBUG_INIT(ACPI_HARDWARE),
41 ACPI_DEBUG_INIT(ACPI_EVENTS),
42 ACPI_DEBUG_INIT(ACPI_TABLES),
43 ACPI_DEBUG_INIT(ACPI_NAMESPACE),
44 ACPI_DEBUG_INIT(ACPI_PARSER),
45 ACPI_DEBUG_INIT(ACPI_DISPATCHER),
46 ACPI_DEBUG_INIT(ACPI_EXECUTER),
47 ACPI_DEBUG_INIT(ACPI_RESOURCES),
48 ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
49 ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
50 ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
51 ACPI_DEBUG_INIT(ACPI_COMPILER),
52 ACPI_DEBUG_INIT(ACPI_TOOLS),
53
54 ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
55 ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
56 ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
57 ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
58 ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
59 ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
60 ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
61 ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
62 ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
63 ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
64 ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
65 ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
66 ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
67 ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
68};
69
70static const struct acpi_dlevel acpi_debug_levels[] = {
71 ACPI_DEBUG_INIT(ACPI_LV_INIT),
72 ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
73 ACPI_DEBUG_INIT(ACPI_LV_INFO),
74
75 ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
76 ACPI_DEBUG_INIT(ACPI_LV_PARSE),
77 ACPI_DEBUG_INIT(ACPI_LV_LOAD),
78 ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
79 ACPI_DEBUG_INIT(ACPI_LV_EXEC),
80 ACPI_DEBUG_INIT(ACPI_LV_NAMES),
81 ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
82 ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
83 ACPI_DEBUG_INIT(ACPI_LV_TABLES),
84 ACPI_DEBUG_INIT(ACPI_LV_VALUES),
85 ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
86 ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
87 ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
88 ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
89
90 ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
91 ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
92 ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
93
94 ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
95 ACPI_DEBUG_INIT(ACPI_LV_THREADS),
96 ACPI_DEBUG_INIT(ACPI_LV_IO),
97 ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
98
99 ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
100 ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
101 ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
102 ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
103};
104
ec652b35 105static int param_get_debug_layer(char *buffer, const struct kernel_param *kp)
1c8fce27
ZR		 106{
107 int result = 0;
108 int i;
109
110 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
111
112 for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
113 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
114 acpi_debug_layers[i].name,
115 acpi_debug_layers[i].value,
116 (acpi_dbg_layer & acpi_debug_layers[i].value)
117 ? '*' : ' ');
118 }
119 result +=
120 sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
121 ACPI_ALL_DRIVERS,
122 (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
123 ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
124 == 0 ? ' ' : '-');
125 result +=
126 sprintf(buffer + result,
127 "--\ndebug_layer = 0x%08X ( * = enabled)\n",
128 acpi_dbg_layer);
129
130 return result;
131}
132
ec652b35 133static int param_get_debug_level(char *buffer, const struct kernel_param *kp)
1c8fce27
ZR		 134{
135 int result = 0;
136 int i;
137
138 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
139
140 for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
141 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
142 acpi_debug_levels[i].name,
143 acpi_debug_levels[i].value,
144 (acpi_dbg_level & acpi_debug_levels[i].value)
145 ? '*' : ' ');
146 }
147 result +=
148 sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
149 acpi_dbg_level);
150
151 return result;
152}
153
9c8b04be 154static const struct kernel_param_ops param_ops_debug_layer = {
ec652b35
ZR		 155 .set = param_set_uint,
156 .get = param_get_debug_layer,
157};
158
9c8b04be 159static const struct kernel_param_ops param_ops_debug_level = {
ec652b35
ZR		 160 .set = param_set_uint,
161 .get = param_get_debug_level,
162};
163
164module_param_cb(debug_layer, &param_ops_debug_layer, &acpi_dbg_layer, 0644);
165module_param_cb(debug_level, &param_ops_debug_level, &acpi_dbg_level, 0644);
1c8fce27
ZR		 166
167static char trace_method_name[6];
168module_param_string(trace_method_name, trace_method_name, 6, 0644);
169static unsigned int trace_debug_layer;
170module_param(trace_debug_layer, uint, 0644);
171static unsigned int trace_debug_level;
172module_param(trace_debug_level, uint, 0644);
173
174static int param_set_trace_state(const char *val, struct kernel_param *kp)
175{
176 int result = 0;
177
869639f9 178 if (!strncmp(val, "enable", sizeof("enable") - 1)) {
1c8fce27
ZR		 179 result = acpi_debug_trace(trace_method_name, trace_debug_level,
180 trace_debug_layer, 0);
181 if (result)
182 result = -EBUSY;
183 goto exit;
184 }
185
869639f9 186 if (!strncmp(val, "disable", sizeof("disable") - 1)) {
1c8fce27
ZR		 187 int name = 0;
188 result = acpi_debug_trace((char *)&name, trace_debug_level,
189 trace_debug_layer, 0);
190 if (result)
191 result = -EBUSY;
192 goto exit;
193 }
194
195 if (!strncmp(val, "1", 1)) {
196 result = acpi_debug_trace(trace_method_name, trace_debug_level,
197 trace_debug_layer, 1);
198 if (result)
199 result = -EBUSY;
200 goto exit;
201 }
202
203 result = -EINVAL;
204exit:
205 return result;
206}
207
208static int param_get_trace_state(char *buffer, struct kernel_param *kp)
209{
210 if (!acpi_gbl_trace_method_name)
211 return sprintf(buffer, "disable");
212 else {
213 if (acpi_gbl_trace_flags & 1)
214 return sprintf(buffer, "1");
215 else
216 return sprintf(buffer, "enable");
217 }
218 return 0;
219}
220
221module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
222 NULL, 0644);
223#endif /* CONFIG_ACPI_DEBUG */
224
aecad432
TR		 225
226/* /sys/modules/acpi/parameters/aml_debug_output */
227
228module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
229 bool, 0644);
230MODULE_PARM_DESC(aml_debug_output,
231 "To enable/disable the ACPI Debug Object output.");
232
1c8fce27
ZR		 233/* /sys/module/acpi/parameters/acpica_version */
234static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
235{
236 int result;
237
238 result = sprintf(buffer, "%x", ACPI_CA_VERSION);
239
240 return result;
241}
242
243module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
244
245/*
246 * ACPI table sysfs I/F:
247 * /sys/firmware/acpi/tables/
248 * /sys/firmware/acpi/tables/dynamic/
249 */
250
251static LIST_HEAD(acpi_table_attr_list);
252static struct kobject *tables_kobj;
253static struct kobject *dynamic_tables_kobj;
3f8055c3 254static struct kobject *hotplug_kobj;
1c8fce27
ZR		 255
256struct acpi_table_attr {
257 struct bin_attribute attr;
258 char name[8];
259 int instance;
260 struct list_head node;
261};
262
263static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
264 struct bin_attribute *bin_attr, char *buf,
265 loff_t offset, size_t count)
266{
267 struct acpi_table_attr *table_attr =
268 container_of(bin_attr, struct acpi_table_attr, attr);
269 struct acpi_table_header *table_header = NULL;
270 acpi_status status;
271 char name[ACPI_NAME_SIZE];
272
273 if (strncmp(table_attr->name, "NULL", 4))
274 memcpy(name, table_attr->name, ACPI_NAME_SIZE);
275 else
276 memcpy(name, "\0\0\0\0", 4);
277
278 status = acpi_get_table(name, table_attr->instance, &table_header);
279 if (ACPI_FAILURE(status))
280 return -ENODEV;
281
282 return memory_read_from_buffer(buf, count, &offset,
283 table_header, table_header->length);
284}
285
286static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
287 struct acpi_table_header *table_header)
288{
289 struct acpi_table_header *header = NULL;
290 struct acpi_table_attr *attr = NULL;
291
292 sysfs_attr_init(&table_attr->attr.attr);
293 if (table_header->signature[0] != '\0')
294 memcpy(table_attr->name, table_header->signature,
295 ACPI_NAME_SIZE);
296 else
297 memcpy(table_attr->name, "NULL", 4);
298
299 list_for_each_entry(attr, &acpi_table_attr_list, node) {
300 if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
301 if (table_attr->instance < attr->instance)
302 table_attr->instance = attr->instance;
303 }
304 table_attr->instance++;
305
306 if (table_attr->instance > 1 || (table_attr->instance == 1 &&
307 !acpi_get_table
308 (table_header->signature, 2, &header)))
309 sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
310 table_attr->instance);
311
312 table_attr->attr.size = 0;
313 table_attr->attr.read = acpi_table_show;
314 table_attr->attr.attr.name = table_attr->name;
315 table_attr->attr.attr.mode = 0400;
316
317 return;
318}
319
320static acpi_status
321acpi_sysfs_table_handler(u32 event, void *table, void *context)
322{
323 struct acpi_table_attr *table_attr;
324
325 switch (event) {
326 case ACPI_TABLE_EVENT_LOAD:
327 table_attr =
328 kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
329 if (!table_attr)
330 return AE_NO_MEMORY;
331
332 acpi_table_attr_init(table_attr, table);
333 if (sysfs_create_bin_file(dynamic_tables_kobj,
334 &table_attr->attr)) {
335 kfree(table_attr);
336 return AE_ERROR;
337 } else
338 list_add_tail(&table_attr->node, &acpi_table_attr_list);
339 break;
340 case ACPI_TABLE_EVENT_UNLOAD:
341 /*
342 * we do not need to do anything right now
343 * because the table is not deleted from the
344 * global table list when unloading it.
345 */
346 break;
347 default:
348 return AE_BAD_PARAMETER;
349 }
350 return AE_OK;
351}
352
353static int acpi_tables_sysfs_init(void)
354{
355 struct acpi_table_attr *table_attr;
356 struct acpi_table_header *table_header = NULL;
357 int table_index = 0;
358 int result;
359
360 tables_kobj = kobject_create_and_add("tables", acpi_kobj);
361 if (!tables_kobj)
362 goto err;
363
364 dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
365 if (!dynamic_tables_kobj)
366 goto err_dynamic_tables;
367
368 do {
369 result = acpi_get_table_by_index(table_index, &table_header);
370 if (!result) {
371 table_index++;
372 table_attr = NULL;
373 table_attr =
374 kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
375 if (!table_attr)
376 return -ENOMEM;
377
378 acpi_table_attr_init(table_attr, table_header);
379 result =
380 sysfs_create_bin_file(tables_kobj,
381 &table_attr->attr);
382 if (result) {
383 kfree(table_attr);
384 return result;
385 } else
386 list_add_tail(&table_attr->node,
387 &acpi_table_attr_list);
388 }
389 } while (!result);
390 kobject_uevent(tables_kobj, KOBJ_ADD);
391 kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
392 result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
393
394 return result == AE_OK ? 0 : -EINVAL;
395err_dynamic_tables:
396 kobject_put(tables_kobj);
397err:
398 return -ENOMEM;
399}
400
401/*
402 * Detailed ACPI IRQ counters:
403 * /sys/firmware/acpi/interrupts/
404 */
405
406u32 acpi_irq_handled;
407u32 acpi_irq_not_handled;
408
409#define COUNT_GPE 0
410#define COUNT_SCI 1 /* acpi_irq_handled */
411#define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */
412#define COUNT_ERROR 3 /* other */
413#define NUM_COUNTERS_EXTRA 4
414
415struct event_counter {
416 u32 count;
417 u32 flags;
418};
419
420static struct event_counter *all_counters;
421static u32 num_gpes;
422static u32 num_counters;
423static struct attribute **all_attrs;
424static u32 acpi_gpe_count;
425
426static struct attribute_group interrupt_stats_attr_group = {
427 .name = "interrupts",
428};
429
430static struct kobj_attribute *counter_attrs;
431
432static void delete_gpe_attr_array(void)
433{
434 struct event_counter *tmp = all_counters;
435
436 all_counters = NULL;
437 kfree(tmp);
438
439 if (counter_attrs) {
440 int i;
441
442 for (i = 0; i < num_gpes; i++)
443 kfree(counter_attrs[i].attr.name);
444
445 kfree(counter_attrs);
446 }
447 kfree(all_attrs);
448
449 return;
450}
451
a0fcdb23 452static void gpe_count(u32 gpe_number)
1c8fce27
ZR		 453{
454 acpi_gpe_count++;
455
456 if (!all_counters)
457 return;
458
459 if (gpe_number < num_gpes)
460 all_counters[gpe_number].count++;
461 else
462 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
463 COUNT_ERROR].count++;
464
465 return;
466}
467
a0fcdb23 468static void fixed_event_count(u32 event_number)
1c8fce27
ZR		 469{
470 if (!all_counters)
471 return;
472
473 if (event_number < ACPI_NUM_FIXED_EVENTS)
474 all_counters[num_gpes + event_number].count++;
475 else
476 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
477 COUNT_ERROR].count++;
478
479 return;
480}
481
644ef74e 482static void acpi_global_event_handler(u32 event_type, acpi_handle device,
a0fcdb23
LM		 483 u32 event_number, void *context)
484{
485 if (event_type == ACPI_EVENT_TYPE_GPE)
486 gpe_count(event_number);
487
488 if (event_type == ACPI_EVENT_TYPE_FIXED)
489 fixed_event_count(event_number);
490}
491
1c8fce27
ZR		 492static int get_status(u32 index, acpi_event_status *status,
493 acpi_handle *handle)
494{
40772621 495 int result;
1c8fce27
ZR		 496
497 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
40772621 498 return -EINVAL;
1c8fce27
ZR		 499
500 if (index < num_gpes) {
501 result = acpi_get_gpe_device(index, handle);
502 if (result) {
503 ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
c6284237 504 "Invalid GPE 0x%x", index));
40772621 505 return result;
1c8fce27
ZR		 506 }
507 result = acpi_get_gpe_status(*handle, index, status);
508 } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
509 result = acpi_get_event_status(index - num_gpes, status);
510
1c8fce27
ZR		 511 return result;
512}
513
514static ssize_t counter_show(struct kobject *kobj,
515 struct kobj_attribute *attr, char *buf)
516{
517 int index = attr - counter_attrs;
518 int size;
519 acpi_handle handle;
520 acpi_event_status status;
521 int result = 0;
522
523 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
524 acpi_irq_handled;
525 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
526 acpi_irq_not_handled;
527 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
528 acpi_gpe_count;
529 size = sprintf(buf, "%8d", all_counters[index].count);
530
531 /* "gpe_all" or "sci" */
532 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
533 goto end;
534
535 result = get_status(index, &status, &handle);
536 if (result)
537 goto end;
538
539 if (!(status & ACPI_EVENT_FLAG_HANDLE))
540 size += sprintf(buf + size, " invalid");
541 else if (status & ACPI_EVENT_FLAG_ENABLED)
542 size += sprintf(buf + size, " enabled");
543 else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
544 size += sprintf(buf + size, " wake_enabled");
545 else
546 size += sprintf(buf + size, " disabled");
547
548end:
549 size += sprintf(buf + size, "\n");
550 return result ? result : size;
551}
552
553/*
554 * counter_set() sets the specified counter.
555 * setting the total "sci" file to any value clears all counters.
556 * enable/disable/clear a gpe/fixed event in user space.
557 */
558static ssize_t counter_set(struct kobject *kobj,
559 struct kobj_attribute *attr, const char *buf,
560 size_t size)
561{
562 int index = attr - counter_attrs;
563 acpi_event_status status;
564 acpi_handle handle;
565 int result = 0;
566
567 if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
568 int i;
569 for (i = 0; i < num_counters; ++i)
570 all_counters[i].count = 0;
571 acpi_gpe_count = 0;
572 acpi_irq_handled = 0;
573 acpi_irq_not_handled = 0;
574 goto end;
575 }
576
577 /* show the event status for both GPEs and Fixed Events */
578 result = get_status(index, &status, &handle);
579 if (result)
580 goto end;
581
582 if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
583 printk(KERN_WARNING PREFIX
584 "Can not change Invalid GPE/Fixed Event status\n");
585 return -EINVAL;
586 }
587
588 if (index < num_gpes) {
589 if (!strcmp(buf, "disable\n") &&
590 (status & ACPI_EVENT_FLAG_ENABLED))
591 result = acpi_disable_gpe(handle, index);
592 else if (!strcmp(buf, "enable\n") &&
593 !(status & ACPI_EVENT_FLAG_ENABLED))
594 result = acpi_enable_gpe(handle, index);
595 else if (!strcmp(buf, "clear\n") &&
596 (status & ACPI_EVENT_FLAG_SET))
597 result = acpi_clear_gpe(handle, index);
598 else
599 all_counters[index].count = strtoul(buf, NULL, 0);
600 } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
601 int event = index - num_gpes;
602 if (!strcmp(buf, "disable\n") &&
603 (status & ACPI_EVENT_FLAG_ENABLED))
604 result = acpi_disable_event(event, ACPI_NOT_ISR);
605 else if (!strcmp(buf, "enable\n") &&
606 !(status & ACPI_EVENT_FLAG_ENABLED))
607 result = acpi_enable_event(event, ACPI_NOT_ISR);
608 else if (!strcmp(buf, "clear\n") &&
609 (status & ACPI_EVENT_FLAG_SET))
610 result = acpi_clear_event(event);
611 else
612 all_counters[index].count = strtoul(buf, NULL, 0);
613 } else
614 all_counters[index].count = strtoul(buf, NULL, 0);
615
616 if (ACPI_FAILURE(result))
617 result = -EINVAL;
618end:
619 return result ? result : size;
620}
621
622void acpi_irq_stats_init(void)
623{
a0fcdb23 624 acpi_status status;
1c8fce27
ZR		 625 int i;
626
627 if (all_counters)
628 return;
629
630 num_gpes = acpi_current_gpe_count;
631 num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
632
633 all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
634 GFP_KERNEL);
635 if (all_attrs == NULL)
636 return;
637
638 all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
639 GFP_KERNEL);
640 if (all_counters == NULL)
641 goto fail;
642
644ef74e 643 status = acpi_install_global_event_handler(acpi_global_event_handler, NULL);
a0fcdb23
LM		 644 if (ACPI_FAILURE(status))
645 goto fail;
646
1c8fce27
ZR		 647 counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
648 GFP_KERNEL);
649 if (counter_attrs == NULL)
650 goto fail;
651
652 for (i = 0; i < num_counters; ++i) {
653 char buffer[12];
654 char *name;
655
656 if (i < num_gpes)
657 sprintf(buffer, "gpe%02X", i);
658 else if (i == num_gpes + ACPI_EVENT_PMTIMER)
659 sprintf(buffer, "ff_pmtimer");
660 else if (i == num_gpes + ACPI_EVENT_GLOBAL)
661 sprintf(buffer, "ff_gbl_lock");
662 else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
663 sprintf(buffer, "ff_pwr_btn");
664 else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
665 sprintf(buffer, "ff_slp_btn");
666 else if (i == num_gpes + ACPI_EVENT_RTC)
667 sprintf(buffer, "ff_rt_clk");
668 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
669 sprintf(buffer, "gpe_all");
670 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
671 sprintf(buffer, "sci");
672 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
673 sprintf(buffer, "sci_not");
674 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
675 sprintf(buffer, "error");
676 else
677 sprintf(buffer, "bug%02X", i);
678
679 name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
680 if (name == NULL)
681 goto fail;
682 strncpy(name, buffer, strlen(buffer) + 1);
683
684 sysfs_attr_init(&counter_attrs[i].attr);
685 counter_attrs[i].attr.name = name;
686 counter_attrs[i].attr.mode = 0644;
687 counter_attrs[i].show = counter_show;
688 counter_attrs[i].store = counter_set;
689
690 all_attrs[i] = &counter_attrs[i].attr;
691 }
692
693 interrupt_stats_attr_group.attrs = all_attrs;
694 if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
695 return;
696
697fail:
698 delete_gpe_attr_array();
699 return;
700}
701
702static void __exit interrupt_stats_exit(void)
703{
704 sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
705
706 delete_gpe_attr_array();
707
708 return;
709}
710
362b6460
TR		 711static ssize_t
712acpi_show_profile(struct device *dev, struct device_attribute *attr,
713 char *buf)
714{
715 return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
716}
717
718static const struct device_attribute pm_profile_attr =
719 __ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);
720
3f8055c3
RW		 721static ssize_t hotplug_enabled_show(struct kobject *kobj,
722 struct kobj_attribute *attr, char *buf)
723{
724 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
725
726 return sprintf(buf, "%d\n", hotplug->enabled);
727}
728
729static ssize_t hotplug_enabled_store(struct kobject *kobj,
730 struct kobj_attribute *attr,
731 const char *buf, size_t size)
732{
733 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
734 unsigned int val;
735
736 if (kstrtouint(buf, 10, &val) || val > 1)
737 return -EINVAL;
738
739 acpi_scan_hotplug_enabled(hotplug, val);
740 return size;
741}
742
743static struct kobj_attribute hotplug_enabled_attr =
744 __ATTR(enabled, S_IRUGO | S_IWUSR, hotplug_enabled_show,
745 hotplug_enabled_store);
746
747static struct attribute *hotplug_profile_attrs[] = {
748 &hotplug_enabled_attr.attr,
749 NULL
750};
751
b09753ec 752static struct kobj_type acpi_hotplug_profile_ktype = {
3f8055c3
RW		 753 .sysfs_ops = &kobj_sysfs_ops,
754 .default_attrs = hotplug_profile_attrs,
755};
756
757void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
758 const char *name)
759{
760 int error;
761
762 if (!hotplug_kobj)
763 goto err_out;
764
765 kobject_init(&hotplug->kobj, &acpi_hotplug_profile_ktype);
766 error = kobject_set_name(&hotplug->kobj, "%s", name);
767 if (error)
768 goto err_out;
769
770 hotplug->kobj.parent = hotplug_kobj;
771 error = kobject_add(&hotplug->kobj, hotplug_kobj, NULL);
772 if (error)
773 goto err_out;
774
775 kobject_uevent(&hotplug->kobj, KOBJ_ADD);
776 return;
777
778 err_out:
779 pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
780}
781
1c8fce27
ZR		 782int __init acpi_sysfs_init(void)
783{
784 int result;
785
786 result = acpi_tables_sysfs_init();
362b6460
TR		 787 if (result)
788 return result;
3f8055c3
RW		 789
790 hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
362b6460 791 result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
1c8fce27
ZR		 792 return result;
793}
kernel source for telekom puls (alcatel/mediatek)