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 
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 
72 #define	ACPI_INIT_DSM_ARGV4(cnt, eles)			\
73 	{						\
74 	  .package.type = ACPI_TYPE_PACKAGE,		\
75 	  .package.count = (cnt),			\
76 	  .package.elements = (eles)			\
77 	}
78 
79 bool acpi_dev_found(const char *hid);
80 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
81 bool acpi_reduced_hardware(void);
82 
83 #ifdef CONFIG_ACPI
84 
85 struct proc_dir_entry;
86 
87 #define ACPI_BUS_FILE_ROOT	"acpi"
88 extern struct proc_dir_entry *acpi_root_dir;
89 
90 enum acpi_bus_device_type {
91 	ACPI_BUS_TYPE_DEVICE = 0,
92 	ACPI_BUS_TYPE_POWER,
93 	ACPI_BUS_TYPE_PROCESSOR,
94 	ACPI_BUS_TYPE_THERMAL,
95 	ACPI_BUS_TYPE_POWER_BUTTON,
96 	ACPI_BUS_TYPE_SLEEP_BUTTON,
97 	ACPI_BUS_TYPE_ECDT_EC,
98 	ACPI_BUS_DEVICE_TYPE_COUNT
99 };
100 
101 struct acpi_driver;
102 struct acpi_device;
103 
104 /*
105  * ACPI Scan Handler
106  * -----------------
107  */
108 
109 struct acpi_hotplug_profile {
110 	struct kobject kobj;
111 	int (*scan_dependent)(struct acpi_device *adev);
112 	void (*notify_online)(struct acpi_device *adev);
113 	bool enabled:1;
114 	bool demand_offline:1;
115 };
116 
to_acpi_hotplug_profile(struct kobject * kobj)117 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
118 						struct kobject *kobj)
119 {
120 	return container_of(kobj, struct acpi_hotplug_profile, kobj);
121 }
122 
123 struct acpi_scan_handler {
124 	const struct acpi_device_id *ids;
125 	struct list_head list_node;
126 	bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
127 	int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
128 	void (*detach)(struct acpi_device *dev);
129 	void (*bind)(struct device *phys_dev);
130 	void (*unbind)(struct device *phys_dev);
131 	struct acpi_hotplug_profile hotplug;
132 };
133 
134 /*
135  * ACPI Hotplug Context
136  * --------------------
137  */
138 
139 struct acpi_hotplug_context {
140 	struct acpi_device *self;
141 	int (*notify)(struct acpi_device *, u32);
142 	void (*uevent)(struct acpi_device *, u32);
143 	void (*fixup)(struct acpi_device *);
144 };
145 
146 /*
147  * ACPI Driver
148  * -----------
149  */
150 
151 typedef int (*acpi_op_add) (struct acpi_device * device);
152 typedef int (*acpi_op_remove) (struct acpi_device * device);
153 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
154 
155 struct acpi_device_ops {
156 	acpi_op_add add;
157 	acpi_op_remove remove;
158 	acpi_op_notify notify;
159 };
160 
161 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS	0x1	/* system AND device events */
162 
163 struct acpi_driver {
164 	char name[80];
165 	char class[80];
166 	const struct acpi_device_id *ids; /* Supported Hardware IDs */
167 	unsigned int flags;
168 	struct acpi_device_ops ops;
169 	struct device_driver drv;
170 	struct module *owner;
171 };
172 
173 /*
174  * ACPI Device
175  * -----------
176  */
177 
178 /* Status (_STA) */
179 
180 struct acpi_device_status {
181 	u32 present:1;
182 	u32 enabled:1;
183 	u32 show_in_ui:1;
184 	u32 functional:1;
185 	u32 battery_present:1;
186 	u32 reserved:27;
187 };
188 
189 /* Flags */
190 
191 struct acpi_device_flags {
192 	u32 dynamic_status:1;
193 	u32 removable:1;
194 	u32 ejectable:1;
195 	u32 power_manageable:1;
196 	u32 match_driver:1;
197 	u32 initialized:1;
198 	u32 visited:1;
199 	u32 hotplug_notify:1;
200 	u32 is_dock_station:1;
201 	u32 of_compatible_ok:1;
202 	u32 coherent_dma:1;
203 	u32 cca_seen:1;
204 	u32 enumeration_by_parent:1;
205 	u32 reserved:19;
206 };
207 
208 /* File System */
209 
210 struct acpi_device_dir {
211 	struct proc_dir_entry *entry;
212 };
213 
214 #define acpi_device_dir(d)	((d)->dir.entry)
215 
216 /* Plug and Play */
217 
218 typedef char acpi_bus_id[8];
219 typedef u64 acpi_bus_address;
220 typedef char acpi_device_name[40];
221 typedef char acpi_device_class[20];
222 
223 struct acpi_hardware_id {
224 	struct list_head list;
225 	const char *id;
226 };
227 
228 struct acpi_pnp_type {
229 	u32 hardware_id:1;
230 	u32 bus_address:1;
231 	u32 platform_id:1;
232 	u32 reserved:29;
233 };
234 
235 struct acpi_device_pnp {
236 	acpi_bus_id bus_id;		/* Object name */
237 	int instance_no;		/* Instance number of this object */
238 	struct acpi_pnp_type type;	/* ID type */
239 	acpi_bus_address bus_address;	/* _ADR */
240 	char *unique_id;		/* _UID */
241 	struct list_head ids;		/* _HID and _CIDs */
242 	acpi_device_name device_name;	/* Driver-determined */
243 	acpi_device_class device_class;	/*        "          */
244 	union acpi_object *str_obj;	/* unicode string for _STR method */
245 };
246 
247 #define acpi_device_bid(d)	((d)->pnp.bus_id)
248 #define acpi_device_adr(d)	((d)->pnp.bus_address)
249 const char *acpi_device_hid(struct acpi_device *device);
250 #define acpi_device_uid(d)	((d)->pnp.unique_id)
251 #define acpi_device_name(d)	((d)->pnp.device_name)
252 #define acpi_device_class(d)	((d)->pnp.device_class)
253 
254 /* Power Management */
255 
256 struct acpi_device_power_flags {
257 	u32 explicit_get:1;	/* _PSC present? */
258 	u32 power_resources:1;	/* Power resources */
259 	u32 inrush_current:1;	/* Serialize Dx->D0 */
260 	u32 power_removed:1;	/* Optimize Dx->D0 */
261 	u32 ignore_parent:1;	/* Power is independent of parent power state */
262 	u32 dsw_present:1;	/* _DSW present? */
263 	u32 reserved:26;
264 };
265 
266 struct acpi_device_power_state {
267 	struct {
268 		u8 valid:1;
269 		u8 explicit_set:1;	/* _PSx present? */
270 		u8 reserved:6;
271 	} flags;
272 	int power;		/* % Power (compared to D0) */
273 	int latency;		/* Dx->D0 time (microseconds) */
274 	struct list_head resources;	/* Power resources referenced */
275 };
276 
277 struct acpi_device_power {
278 	int state;		/* Current state */
279 	struct acpi_device_power_flags flags;
280 	struct acpi_device_power_state states[ACPI_D_STATE_COUNT];	/* Power states (D0-D3Cold) */
281 	u8 state_for_enumeration; /* Deepest power state for enumeration */
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 };
575 int register_acpi_bus_type(struct acpi_bus_type *);
576 int unregister_acpi_bus_type(struct acpi_bus_type *);
577 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
578 int acpi_unbind_one(struct device *dev);
579 
580 struct acpi_pci_root {
581 	struct acpi_device * device;
582 	struct pci_bus *bus;
583 	u16 segment;
584 	struct resource secondary;	/* downstream bus range */
585 
586 	u32 osc_support_set;	/* _OSC state of support bits */
587 	u32 osc_control_set;	/* _OSC state of control bits */
588 	phys_addr_t mcfg_addr;
589 };
590 
591 /* helper */
592 
593 bool acpi_dma_supported(const struct acpi_device *adev);
594 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
595 int acpi_iommu_fwspec_init(struct device *dev, u32 id,
596 			   struct fwnode_handle *fwnode,
597 			   const struct iommu_ops *ops);
598 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset,
599 		       u64 *size);
600 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
601 			   const u32 *input_id);
acpi_dma_configure(struct device * dev,enum dev_dma_attr attr)602 static inline int acpi_dma_configure(struct device *dev,
603 				     enum dev_dma_attr attr)
604 {
605 	return acpi_dma_configure_id(dev, attr, NULL);
606 }
607 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
608 					   u64 address, bool check_children);
609 int acpi_is_root_bridge(acpi_handle);
610 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
611 
612 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
613 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
614 
615 #ifdef CONFIG_X86
616 bool acpi_device_always_present(struct acpi_device *adev);
617 #else
acpi_device_always_present(struct acpi_device * adev)618 static inline bool acpi_device_always_present(struct acpi_device *adev)
619 {
620 	return false;
621 }
622 #endif
623 
624 #ifdef CONFIG_PM
625 void acpi_pm_wakeup_event(struct device *dev);
626 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
627 			void (*func)(struct acpi_device_wakeup_context *context));
628 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
629 bool acpi_pm_device_can_wakeup(struct device *dev);
630 int acpi_pm_device_sleep_state(struct device *, int *, int);
631 int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
632 #else
acpi_pm_wakeup_event(struct device * dev)633 static inline void acpi_pm_wakeup_event(struct device *dev)
634 {
635 }
acpi_add_pm_notifier(struct acpi_device * adev,struct device * dev,void (* func)(struct acpi_device_wakeup_context * context))636 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
637 					       struct device *dev,
638 					       void (*func)(struct acpi_device_wakeup_context *context))
639 {
640 	return AE_SUPPORT;
641 }
acpi_remove_pm_notifier(struct acpi_device * adev)642 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
643 {
644 	return AE_SUPPORT;
645 }
acpi_pm_device_can_wakeup(struct device * dev)646 static inline bool acpi_pm_device_can_wakeup(struct device *dev)
647 {
648 	return false;
649 }
acpi_pm_device_sleep_state(struct device * d,int * p,int m)650 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
651 {
652 	if (p)
653 		*p = ACPI_STATE_D0;
654 
655 	return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
656 		m : ACPI_STATE_D0;
657 }
acpi_pm_set_device_wakeup(struct device * dev,bool enable)658 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
659 {
660 	return -ENODEV;
661 }
662 #endif
663 
664 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
665 bool acpi_sleep_state_supported(u8 sleep_state);
666 #else
acpi_sleep_state_supported(u8 sleep_state)667 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
668 #endif
669 
670 #ifdef CONFIG_ACPI_SLEEP
671 u32 acpi_target_system_state(void);
672 #else
acpi_target_system_state(void)673 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
674 #endif
675 
acpi_device_power_manageable(struct acpi_device * adev)676 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
677 {
678 	return adev->flags.power_manageable;
679 }
680 
acpi_device_can_wakeup(struct acpi_device * adev)681 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
682 {
683 	return adev->wakeup.flags.valid;
684 }
685 
acpi_device_can_poweroff(struct acpi_device * adev)686 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
687 {
688 	return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
689 		((acpi_gbl_FADT.header.revision < 6) &&
690 		adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
691 }
692 
693 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
694 
695 void acpi_dev_clear_dependencies(struct acpi_device *supplier);
696 struct acpi_device *acpi_dev_get_first_consumer_dev(struct acpi_device *supplier);
697 struct acpi_device *
698 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
699 struct acpi_device *
700 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
701 
702 /**
703  * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
704  * @adev: pointer to the matching ACPI device, NULL at the end of the loop
705  * @hid: Hardware ID of the device.
706  * @uid: Unique ID of the device, pass NULL to not check _UID
707  * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
708  *
709  * The caller is responsible for invoking acpi_dev_put() on the returned device.
710  */
711 #define for_each_acpi_dev_match(adev, hid, uid, hrv)			\
712 	for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv);	\
713 	     adev;							\
714 	     adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
715 
acpi_dev_get(struct acpi_device * adev)716 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
717 {
718 	return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
719 }
720 
acpi_dev_put(struct acpi_device * adev)721 static inline void acpi_dev_put(struct acpi_device *adev)
722 {
723 	if (adev)
724 		put_device(&adev->dev);
725 }
726 
727 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
728 
acpi_bus_put_acpi_device(struct acpi_device * adev)729 static inline void acpi_bus_put_acpi_device(struct acpi_device *adev)
730 {
731 	acpi_dev_put(adev);
732 }
733 #else	/* CONFIG_ACPI */
734 
register_acpi_bus_type(void * bus)735 static inline int register_acpi_bus_type(void *bus) { return 0; }
unregister_acpi_bus_type(void * bus)736 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
737 
738 #endif				/* CONFIG_ACPI */
739 
740 #endif /*__ACPI_BUS_H__*/
741