1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
4 *
5 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
6 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
7 */
8
9 #ifndef __ACPI_BUS_H__
10 #define __ACPI_BUS_H__
11
12 #include <linux/device.h>
13 #include <linux/property.h>
14
15 /* TBD: Make dynamic */
16 #define ACPI_MAX_HANDLES 10
17 struct acpi_handle_list {
18 u32 count;
19 acpi_handle handles[ACPI_MAX_HANDLES];
20 };
21
22 /* acpi_utils.h */
23 acpi_status
24 acpi_extract_package(union acpi_object *package,
25 struct acpi_buffer *format, struct acpi_buffer *buffer);
26 acpi_status
27 acpi_evaluate_integer(acpi_handle handle,
28 acpi_string pathname,
29 struct acpi_object_list *arguments, unsigned long long *data);
30 acpi_status
31 acpi_evaluate_reference(acpi_handle handle,
32 acpi_string pathname,
33 struct acpi_object_list *arguments,
34 struct acpi_handle_list *list);
35 acpi_status
36 acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
37 struct acpi_buffer *status_buf);
38
39 acpi_status
40 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
41
42 bool acpi_has_method(acpi_handle handle, char *name);
43 acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
44 u64 arg);
45 acpi_status acpi_evaluate_ej0(acpi_handle handle);
46 acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
47 acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function);
48 bool acpi_ata_match(acpi_handle handle);
49 bool acpi_bay_match(acpi_handle handle);
50 bool acpi_dock_match(acpi_handle handle);
51
52 bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs);
53 union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
54 u64 rev, u64 func, union acpi_object *argv4);
55 #ifdef CONFIG_ACPI
56 static inline union acpi_object *
acpi_evaluate_dsm_typed(acpi_handle handle,const guid_t * guid,u64 rev,u64 func,union acpi_object * argv4,acpi_object_type type)57 acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev,
58 u64 func, union acpi_object *argv4,
59 acpi_object_type type)
60 {
61 union acpi_object *obj;
62
63 obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4);
64 if (obj && obj->type != type) {
65 ACPI_FREE(obj);
66 obj = NULL;
67 }
68
69 return obj;
70 }
71 #endif
72
73 #define ACPI_INIT_DSM_ARGV4(cnt, eles) \
74 { \
75 .package.type = ACPI_TYPE_PACKAGE, \
76 .package.count = (cnt), \
77 .package.elements = (eles) \
78 }
79
80 bool acpi_dev_found(const char *hid);
81 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
82 bool acpi_reduced_hardware(void);
83
84 #ifdef CONFIG_ACPI
85
86 struct proc_dir_entry;
87
88 #define ACPI_BUS_FILE_ROOT "acpi"
89 extern struct proc_dir_entry *acpi_root_dir;
90
91 enum acpi_bus_device_type {
92 ACPI_BUS_TYPE_DEVICE = 0,
93 ACPI_BUS_TYPE_POWER,
94 ACPI_BUS_TYPE_PROCESSOR,
95 ACPI_BUS_TYPE_THERMAL,
96 ACPI_BUS_TYPE_POWER_BUTTON,
97 ACPI_BUS_TYPE_SLEEP_BUTTON,
98 ACPI_BUS_TYPE_ECDT_EC,
99 ACPI_BUS_DEVICE_TYPE_COUNT
100 };
101
102 struct acpi_driver;
103 struct acpi_device;
104
105 /*
106 * ACPI Scan Handler
107 * -----------------
108 */
109
110 struct acpi_hotplug_profile {
111 struct kobject kobj;
112 int (*scan_dependent)(struct acpi_device *adev);
113 void (*notify_online)(struct acpi_device *adev);
114 bool enabled:1;
115 bool demand_offline:1;
116 };
117
to_acpi_hotplug_profile(struct kobject * kobj)118 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
119 struct kobject *kobj)
120 {
121 return container_of(kobj, struct acpi_hotplug_profile, kobj);
122 }
123
124 struct acpi_scan_handler {
125 const struct acpi_device_id *ids;
126 struct list_head list_node;
127 bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
128 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
129 void (*detach)(struct acpi_device *dev);
130 void (*bind)(struct device *phys_dev);
131 void (*unbind)(struct device *phys_dev);
132 struct acpi_hotplug_profile hotplug;
133 };
134
135 /*
136 * ACPI Hotplug Context
137 * --------------------
138 */
139
140 struct acpi_hotplug_context {
141 struct acpi_device *self;
142 int (*notify)(struct acpi_device *, u32);
143 void (*uevent)(struct acpi_device *, u32);
144 void (*fixup)(struct acpi_device *);
145 };
146
147 /*
148 * ACPI Driver
149 * -----------
150 */
151
152 typedef int (*acpi_op_add) (struct acpi_device * device);
153 typedef int (*acpi_op_remove) (struct acpi_device * device);
154 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
155
156 struct acpi_device_ops {
157 acpi_op_add add;
158 acpi_op_remove remove;
159 acpi_op_notify notify;
160 };
161
162 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
163
164 struct acpi_driver {
165 char name[80];
166 char class[80];
167 const struct acpi_device_id *ids; /* Supported Hardware IDs */
168 unsigned int flags;
169 struct acpi_device_ops ops;
170 struct device_driver drv;
171 struct module *owner;
172 };
173
174 /*
175 * ACPI Device
176 * -----------
177 */
178
179 /* Status (_STA) */
180
181 struct acpi_device_status {
182 u32 present:1;
183 u32 enabled:1;
184 u32 show_in_ui:1;
185 u32 functional:1;
186 u32 battery_present:1;
187 u32 reserved:27;
188 };
189
190 /* Flags */
191
192 struct acpi_device_flags {
193 u32 dynamic_status:1;
194 u32 removable:1;
195 u32 ejectable:1;
196 u32 power_manageable:1;
197 u32 match_driver:1;
198 u32 initialized:1;
199 u32 visited:1;
200 u32 hotplug_notify:1;
201 u32 is_dock_station:1;
202 u32 of_compatible_ok:1;
203 u32 coherent_dma:1;
204 u32 cca_seen:1;
205 u32 enumeration_by_parent:1;
206 u32 reserved:19;
207 };
208
209 /* File System */
210
211 struct acpi_device_dir {
212 struct proc_dir_entry *entry;
213 };
214
215 #define acpi_device_dir(d) ((d)->dir.entry)
216
217 /* Plug and Play */
218
219 typedef char acpi_bus_id[8];
220 typedef u64 acpi_bus_address;
221 typedef char acpi_device_name[40];
222 typedef char acpi_device_class[20];
223
224 struct acpi_hardware_id {
225 struct list_head list;
226 const char *id;
227 };
228
229 struct acpi_pnp_type {
230 u32 hardware_id:1;
231 u32 bus_address:1;
232 u32 platform_id:1;
233 u32 reserved:29;
234 };
235
236 struct acpi_device_pnp {
237 acpi_bus_id bus_id; /* Object name */
238 int instance_no; /* Instance number of this object */
239 struct acpi_pnp_type type; /* ID type */
240 acpi_bus_address bus_address; /* _ADR */
241 char *unique_id; /* _UID */
242 struct list_head ids; /* _HID and _CIDs */
243 acpi_device_name device_name; /* Driver-determined */
244 acpi_device_class device_class; /* " */
245 union acpi_object *str_obj; /* unicode string for _STR method */
246 };
247
248 #define acpi_device_bid(d) ((d)->pnp.bus_id)
249 #define acpi_device_adr(d) ((d)->pnp.bus_address)
250 const char *acpi_device_hid(struct acpi_device *device);
251 #define acpi_device_uid(d) ((d)->pnp.unique_id)
252 #define acpi_device_name(d) ((d)->pnp.device_name)
253 #define acpi_device_class(d) ((d)->pnp.device_class)
254
255 /* Power Management */
256
257 struct acpi_device_power_flags {
258 u32 explicit_get:1; /* _PSC present? */
259 u32 power_resources:1; /* Power resources */
260 u32 inrush_current:1; /* Serialize Dx->D0 */
261 u32 power_removed:1; /* Optimize Dx->D0 */
262 u32 ignore_parent:1; /* Power is independent of parent power state */
263 u32 dsw_present:1; /* _DSW present? */
264 u32 reserved:26;
265 };
266
267 struct acpi_device_power_state {
268 struct {
269 u8 valid:1;
270 u8 explicit_set:1; /* _PSx present? */
271 u8 reserved:6;
272 } flags;
273 int power; /* % Power (compared to D0) */
274 int latency; /* Dx->D0 time (microseconds) */
275 struct list_head resources; /* Power resources referenced */
276 };
277
278 struct acpi_device_power {
279 int state; /* Current state */
280 struct acpi_device_power_flags flags;
281 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
282 };
283
284 struct acpi_dep_data {
285 struct list_head node;
286 acpi_handle supplier;
287 acpi_handle consumer;
288 };
289
290 /* Performance Management */
291
292 struct acpi_device_perf_flags {
293 u8 reserved:8;
294 };
295
296 struct acpi_device_perf_state {
297 struct {
298 u8 valid:1;
299 u8 reserved:7;
300 } flags;
301 u8 power; /* % Power (compared to P0) */
302 u8 performance; /* % Performance ( " ) */
303 int latency; /* Px->P0 time (microseconds) */
304 };
305
306 struct acpi_device_perf {
307 int state;
308 struct acpi_device_perf_flags flags;
309 int state_count;
310 struct acpi_device_perf_state *states;
311 };
312
313 /* Wakeup Management */
314 struct acpi_device_wakeup_flags {
315 u8 valid:1; /* Can successfully enable wakeup? */
316 u8 notifier_present:1; /* Wake-up notify handler has been installed */
317 };
318
319 struct acpi_device_wakeup_context {
320 void (*func)(struct acpi_device_wakeup_context *context);
321 struct device *dev;
322 };
323
324 struct acpi_device_wakeup {
325 acpi_handle gpe_device;
326 u64 gpe_number;
327 u64 sleep_state;
328 struct list_head resources;
329 struct acpi_device_wakeup_flags flags;
330 struct acpi_device_wakeup_context context;
331 struct wakeup_source *ws;
332 int prepare_count;
333 int enable_count;
334 };
335
336 struct acpi_device_physical_node {
337 unsigned int node_id;
338 struct list_head node;
339 struct device *dev;
340 bool put_online:1;
341 };
342
343 struct acpi_device_properties {
344 const guid_t *guid;
345 const union acpi_object *properties;
346 struct list_head list;
347 };
348
349 /* ACPI Device Specific Data (_DSD) */
350 struct acpi_device_data {
351 const union acpi_object *pointer;
352 struct list_head properties;
353 const union acpi_object *of_compatible;
354 struct list_head subnodes;
355 };
356
357 struct acpi_gpio_mapping;
358
359 /* Device */
360 struct acpi_device {
361 int device_type;
362 acpi_handle handle; /* no handle for fixed hardware */
363 struct fwnode_handle fwnode;
364 struct acpi_device *parent;
365 struct list_head children;
366 struct list_head node;
367 struct list_head wakeup_list;
368 struct list_head del_list;
369 struct acpi_device_status status;
370 struct acpi_device_flags flags;
371 struct acpi_device_pnp pnp;
372 struct acpi_device_power power;
373 struct acpi_device_wakeup wakeup;
374 struct acpi_device_perf performance;
375 struct acpi_device_dir dir;
376 struct acpi_device_data data;
377 struct acpi_scan_handler *handler;
378 struct acpi_hotplug_context *hp;
379 struct acpi_driver *driver;
380 const struct acpi_gpio_mapping *driver_gpios;
381 void *driver_data;
382 struct device dev;
383 unsigned int physical_node_count;
384 unsigned int dep_unmet;
385 struct list_head physical_node_list;
386 struct mutex physical_node_lock;
387 void (*remove)(struct acpi_device *);
388 };
389
390 /* Non-device subnode */
391 struct acpi_data_node {
392 const char *name;
393 acpi_handle handle;
394 struct fwnode_handle fwnode;
395 struct fwnode_handle *parent;
396 struct acpi_device_data data;
397 struct list_head sibling;
398 struct kobject kobj;
399 struct completion kobj_done;
400 };
401
402 extern const struct fwnode_operations acpi_device_fwnode_ops;
403 extern const struct fwnode_operations acpi_data_fwnode_ops;
404 extern const struct fwnode_operations acpi_static_fwnode_ops;
405
406 bool is_acpi_device_node(const struct fwnode_handle *fwnode);
407 bool is_acpi_data_node(const struct fwnode_handle *fwnode);
408
is_acpi_node(const struct fwnode_handle * fwnode)409 static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
410 {
411 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
412 }
413
414 #define to_acpi_device_node(__fwnode) \
415 ({ \
416 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
417 \
418 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \
419 container_of(__to_acpi_device_node_fwnode, \
420 struct acpi_device, fwnode) : \
421 NULL; \
422 })
423
424 #define to_acpi_data_node(__fwnode) \
425 ({ \
426 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
427 \
428 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \
429 container_of(__to_acpi_data_node_fwnode, \
430 struct acpi_data_node, fwnode) : \
431 NULL; \
432 })
433
is_acpi_static_node(const struct fwnode_handle * fwnode)434 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
435 {
436 return !IS_ERR_OR_NULL(fwnode) &&
437 fwnode->ops == &acpi_static_fwnode_ops;
438 }
439
acpi_data_node_match(const struct fwnode_handle * fwnode,const char * name)440 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
441 const char *name)
442 {
443 return is_acpi_data_node(fwnode) ?
444 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
445 }
446
acpi_fwnode_handle(struct acpi_device * adev)447 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
448 {
449 return &adev->fwnode;
450 }
451
acpi_driver_data(struct acpi_device * d)452 static inline void *acpi_driver_data(struct acpi_device *d)
453 {
454 return d->driver_data;
455 }
456
457 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
458 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
459
acpi_set_device_status(struct acpi_device * adev,u32 sta)460 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
461 {
462 *((u32 *)&adev->status) = sta;
463 }
464
acpi_set_hp_context(struct acpi_device * adev,struct acpi_hotplug_context * hp)465 static inline void acpi_set_hp_context(struct acpi_device *adev,
466 struct acpi_hotplug_context *hp)
467 {
468 hp->self = adev;
469 adev->hp = hp;
470 }
471
472 void acpi_initialize_hp_context(struct acpi_device *adev,
473 struct acpi_hotplug_context *hp,
474 int (*notify)(struct acpi_device *, u32),
475 void (*uevent)(struct acpi_device *, u32));
476
477 /* acpi_device.dev.bus == &acpi_bus_type */
478 extern struct bus_type acpi_bus_type;
479
480 /*
481 * Events
482 * ------
483 */
484
485 struct acpi_bus_event {
486 struct list_head node;
487 acpi_device_class device_class;
488 acpi_bus_id bus_id;
489 u32 type;
490 u32 data;
491 };
492
493 extern struct kobject *acpi_kobj;
494 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
495 void acpi_bus_private_data_handler(acpi_handle, void *);
496 int acpi_bus_get_private_data(acpi_handle, void **);
497 int acpi_bus_attach_private_data(acpi_handle, void *);
498 void acpi_bus_detach_private_data(acpi_handle);
499 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
500 extern int register_acpi_notifier(struct notifier_block *);
501 extern int unregister_acpi_notifier(struct notifier_block *);
502
503 /*
504 * External Functions
505 */
506
507 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
508 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
509 unsigned long long *sta);
510 int acpi_bus_get_status(struct acpi_device *device);
511
512 int acpi_bus_set_power(acpi_handle handle, int state);
513 const char *acpi_power_state_string(int state);
514 int acpi_device_set_power(struct acpi_device *device, int state);
515 int acpi_bus_init_power(struct acpi_device *device);
516 int acpi_device_fix_up_power(struct acpi_device *device);
517 int acpi_bus_update_power(acpi_handle handle, int *state_p);
518 int acpi_device_update_power(struct acpi_device *device, int *state_p);
519 bool acpi_bus_power_manageable(acpi_handle handle);
520 int acpi_device_power_add_dependent(struct acpi_device *adev,
521 struct device *dev);
522 void acpi_device_power_remove_dependent(struct acpi_device *adev,
523 struct device *dev);
524
525 #ifdef CONFIG_PM
526 bool acpi_bus_can_wakeup(acpi_handle handle);
527 #else
acpi_bus_can_wakeup(acpi_handle handle)528 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
529 #endif
530
531 void acpi_scan_lock_acquire(void);
532 void acpi_scan_lock_release(void);
533 void acpi_lock_hp_context(void);
534 void acpi_unlock_hp_context(void);
535 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
536 int acpi_bus_register_driver(struct acpi_driver *driver);
537 void acpi_bus_unregister_driver(struct acpi_driver *driver);
538 int acpi_bus_scan(acpi_handle handle);
539 void acpi_bus_trim(struct acpi_device *start);
540 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
541 int acpi_match_device_ids(struct acpi_device *device,
542 const struct acpi_device_id *ids);
543 void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
544 char *modalias, size_t len);
545 int acpi_create_dir(struct acpi_device *);
546 void acpi_remove_dir(struct acpi_device *);
547
acpi_device_enumerated(struct acpi_device * adev)548 static inline bool acpi_device_enumerated(struct acpi_device *adev)
549 {
550 return adev && adev->flags.initialized && adev->flags.visited;
551 }
552
553 /**
554 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
555 * @__acpi_driver: acpi_driver struct
556 *
557 * Helper macro for ACPI drivers which do not do anything special in module
558 * init/exit. This eliminates a lot of boilerplate. Each module may only
559 * use this macro once, and calling it replaces module_init() and module_exit()
560 */
561 #define module_acpi_driver(__acpi_driver) \
562 module_driver(__acpi_driver, acpi_bus_register_driver, \
563 acpi_bus_unregister_driver)
564
565 /*
566 * Bind physical devices with ACPI devices
567 */
568 struct acpi_bus_type {
569 struct list_head list;
570 const char *name;
571 bool (*match)(struct device *dev);
572 struct acpi_device * (*find_companion)(struct device *);
573 void (*setup)(struct device *);
574 void (*cleanup)(struct device *);
575 };
576 int register_acpi_bus_type(struct acpi_bus_type *);
577 int unregister_acpi_bus_type(struct acpi_bus_type *);
578 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
579 int acpi_unbind_one(struct device *dev);
580
581 struct acpi_pci_root {
582 struct acpi_device * device;
583 struct pci_bus *bus;
584 u16 segment;
585 struct resource secondary; /* downstream bus range */
586
587 u32 osc_support_set; /* _OSC state of support bits */
588 u32 osc_control_set; /* _OSC state of control bits */
589 phys_addr_t mcfg_addr;
590 };
591
592 /* helper */
593
594 bool acpi_dma_supported(const struct acpi_device *adev);
595 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
596 int acpi_iommu_fwspec_init(struct device *dev, u32 id,
597 struct fwnode_handle *fwnode,
598 const struct iommu_ops *ops);
599 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset,
600 u64 *size);
601 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
602 const u32 *input_id);
acpi_dma_configure(struct device * dev,enum dev_dma_attr attr)603 static inline int acpi_dma_configure(struct device *dev,
604 enum dev_dma_attr attr)
605 {
606 return acpi_dma_configure_id(dev, attr, NULL);
607 }
608 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
609 u64 address, bool check_children);
610 int acpi_is_root_bridge(acpi_handle);
611 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
612
613 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
614 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
615
616 #ifdef CONFIG_X86
617 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status);
618 #else
acpi_device_override_status(struct acpi_device * adev,unsigned long long * status)619 static inline bool acpi_device_override_status(struct acpi_device *adev,
620 unsigned long long *status)
621 {
622 return false;
623 }
624 #endif
625
626 #ifdef CONFIG_PM
627 void acpi_pm_wakeup_event(struct device *dev);
628 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
629 void (*func)(struct acpi_device_wakeup_context *context));
630 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
631 bool acpi_pm_device_can_wakeup(struct device *dev);
632 int acpi_pm_device_sleep_state(struct device *, int *, int);
633 int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
634 #else
acpi_pm_wakeup_event(struct device * dev)635 static inline void acpi_pm_wakeup_event(struct device *dev)
636 {
637 }
acpi_add_pm_notifier(struct acpi_device * adev,struct device * dev,void (* func)(struct acpi_device_wakeup_context * context))638 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
639 struct device *dev,
640 void (*func)(struct acpi_device_wakeup_context *context))
641 {
642 return AE_SUPPORT;
643 }
acpi_remove_pm_notifier(struct acpi_device * adev)644 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
645 {
646 return AE_SUPPORT;
647 }
acpi_pm_device_can_wakeup(struct device * dev)648 static inline bool acpi_pm_device_can_wakeup(struct device *dev)
649 {
650 return false;
651 }
acpi_pm_device_sleep_state(struct device * d,int * p,int m)652 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
653 {
654 if (p)
655 *p = ACPI_STATE_D0;
656
657 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
658 m : ACPI_STATE_D0;
659 }
acpi_pm_set_device_wakeup(struct device * dev,bool enable)660 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
661 {
662 return -ENODEV;
663 }
664 #endif
665
666 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
667 bool acpi_sleep_state_supported(u8 sleep_state);
668 #else
acpi_sleep_state_supported(u8 sleep_state)669 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
670 #endif
671
672 #ifdef CONFIG_ACPI_SLEEP
673 u32 acpi_target_system_state(void);
674 #else
acpi_target_system_state(void)675 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
676 #endif
677
acpi_device_power_manageable(struct acpi_device * adev)678 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
679 {
680 return adev->flags.power_manageable;
681 }
682
acpi_device_can_wakeup(struct acpi_device * adev)683 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
684 {
685 return adev->wakeup.flags.valid;
686 }
687
acpi_device_can_poweroff(struct acpi_device * adev)688 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
689 {
690 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
691 ((acpi_gbl_FADT.header.revision < 6) &&
692 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
693 }
694
695 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
696
697 void acpi_dev_clear_dependencies(struct acpi_device *supplier);
698 struct acpi_device *acpi_dev_get_first_consumer_dev(struct acpi_device *supplier);
699 struct acpi_device *
700 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
701 struct acpi_device *
702 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
703
704 /**
705 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
706 * @adev: pointer to the matching ACPI device, NULL at the end of the loop
707 * @hid: Hardware ID of the device.
708 * @uid: Unique ID of the device, pass NULL to not check _UID
709 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
710 *
711 * The caller is responsible for invoking acpi_dev_put() on the returned device.
712 */
713 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \
714 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \
715 adev; \
716 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
717
acpi_dev_get(struct acpi_device * adev)718 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
719 {
720 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
721 }
722
acpi_dev_put(struct acpi_device * adev)723 static inline void acpi_dev_put(struct acpi_device *adev)
724 {
725 if (adev)
726 put_device(&adev->dev);
727 }
728
729 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
730
acpi_bus_put_acpi_device(struct acpi_device * adev)731 static inline void acpi_bus_put_acpi_device(struct acpi_device *adev)
732 {
733 acpi_dev_put(adev);
734 }
735 #else /* CONFIG_ACPI */
736
register_acpi_bus_type(void * bus)737 static inline int register_acpi_bus_type(void *bus) { return 0; }
unregister_acpi_bus_type(void * bus)738 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
739
740 #endif /* CONFIG_ACPI */
741
742 #endif /*__ACPI_BUS_H__*/
743