Merge tag 'v6.5/vfs.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[linux-2.6-microblaze.git] / include / acpi / acpi_bus.h
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 *
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
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 void (*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 honor_deps:1;
207         u32 reserved:18;
208 };
209
210 /* File System */
211
212 struct acpi_device_dir {
213         struct proc_dir_entry *entry;
214 };
215
216 #define acpi_device_dir(d)      ((d)->dir.entry)
217
218 /* Plug and Play */
219
220 typedef char acpi_bus_id[8];
221 typedef u64 acpi_bus_address;
222 typedef char acpi_device_name[40];
223 typedef char acpi_device_class[20];
224
225 struct acpi_hardware_id {
226         struct list_head list;
227         const char *id;
228 };
229
230 struct acpi_pnp_type {
231         u32 hardware_id:1;
232         u32 bus_address:1;
233         u32 platform_id:1;
234         u32 backlight:1;
235         u32 reserved:28;
236 };
237
238 struct acpi_device_pnp {
239         acpi_bus_id bus_id;             /* Object name */
240         int instance_no;                /* Instance number of this object */
241         struct acpi_pnp_type type;      /* ID type */
242         acpi_bus_address bus_address;   /* _ADR */
243         char *unique_id;                /* _UID */
244         struct list_head ids;           /* _HID and _CIDs */
245         acpi_device_name device_name;   /* Driver-determined */
246         acpi_device_class device_class; /*        "          */
247         union acpi_object *str_obj;     /* unicode string for _STR method */
248 };
249
250 #define acpi_device_bid(d)      ((d)->pnp.bus_id)
251 #define acpi_device_adr(d)      ((d)->pnp.bus_address)
252 const char *acpi_device_hid(struct acpi_device *device);
253 #define acpi_device_uid(d)      ((d)->pnp.unique_id)
254 #define acpi_device_name(d)     ((d)->pnp.device_name)
255 #define acpi_device_class(d)    ((d)->pnp.device_class)
256
257 /* Power Management */
258
259 struct acpi_device_power_flags {
260         u32 explicit_get:1;     /* _PSC present? */
261         u32 power_resources:1;  /* Power resources */
262         u32 inrush_current:1;   /* Serialize Dx->D0 */
263         u32 power_removed:1;    /* Optimize Dx->D0 */
264         u32 ignore_parent:1;    /* Power is independent of parent power state */
265         u32 dsw_present:1;      /* _DSW present? */
266         u32 reserved:26;
267 };
268
269 struct acpi_device_power_state {
270         struct {
271                 u8 valid:1;
272                 u8 explicit_set:1;      /* _PSx present? */
273                 u8 reserved:6;
274         } flags;
275         int power;              /* % Power (compared to D0) */
276         int latency;            /* Dx->D0 time (microseconds) */
277         struct list_head resources;     /* Power resources referenced */
278 };
279
280 struct acpi_device_power {
281         int state;              /* Current state */
282         struct acpi_device_power_flags flags;
283         struct acpi_device_power_state states[ACPI_D_STATE_COUNT];      /* Power states (D0-D3Cold) */
284         u8 state_for_enumeration; /* Deepest power state for enumeration */
285 };
286
287 struct acpi_dep_data {
288         struct list_head node;
289         acpi_handle supplier;
290         acpi_handle consumer;
291         bool honor_dep;
292 };
293
294 /* Performance Management */
295
296 struct acpi_device_perf_flags {
297         u8 reserved:8;
298 };
299
300 struct acpi_device_perf_state {
301         struct {
302                 u8 valid:1;
303                 u8 reserved:7;
304         } flags;
305         u8 power;               /* % Power (compared to P0) */
306         u8 performance;         /* % Performance (    "   ) */
307         int latency;            /* Px->P0 time (microseconds) */
308 };
309
310 struct acpi_device_perf {
311         int state;
312         struct acpi_device_perf_flags flags;
313         int state_count;
314         struct acpi_device_perf_state *states;
315 };
316
317 /* Wakeup Management */
318 struct acpi_device_wakeup_flags {
319         u8 valid:1;             /* Can successfully enable wakeup? */
320         u8 notifier_present:1;  /* Wake-up notify handler has been installed */
321 };
322
323 struct acpi_device_wakeup_context {
324         void (*func)(struct acpi_device_wakeup_context *context);
325         struct device *dev;
326 };
327
328 struct acpi_device_wakeup {
329         acpi_handle gpe_device;
330         u64 gpe_number;
331         u64 sleep_state;
332         struct list_head resources;
333         struct acpi_device_wakeup_flags flags;
334         struct acpi_device_wakeup_context context;
335         struct wakeup_source *ws;
336         int prepare_count;
337         int enable_count;
338 };
339
340 struct acpi_device_physical_node {
341         unsigned int node_id;
342         struct list_head node;
343         struct device *dev;
344         bool put_online:1;
345 };
346
347 struct acpi_device_properties {
348         const guid_t *guid;
349         union acpi_object *properties;
350         struct list_head list;
351         void **bufs;
352 };
353
354 /* ACPI Device Specific Data (_DSD) */
355 struct acpi_device_data {
356         const union acpi_object *pointer;
357         struct list_head properties;
358         const union acpi_object *of_compatible;
359         struct list_head subnodes;
360 };
361
362 struct acpi_gpio_mapping;
363
364 /* Device */
365 struct acpi_device {
366         u32 pld_crc;
367         int device_type;
368         acpi_handle handle;             /* no handle for fixed hardware */
369         struct fwnode_handle fwnode;
370         struct list_head wakeup_list;
371         struct list_head del_list;
372         struct acpi_device_status status;
373         struct acpi_device_flags flags;
374         struct acpi_device_pnp pnp;
375         struct acpi_device_power power;
376         struct acpi_device_wakeup wakeup;
377         struct acpi_device_perf performance;
378         struct acpi_device_dir dir;
379         struct acpi_device_data data;
380         struct acpi_scan_handler *handler;
381         struct acpi_hotplug_context *hp;
382         const struct acpi_gpio_mapping *driver_gpios;
383         void *driver_data;
384         struct device dev;
385         unsigned int physical_node_count;
386         unsigned int dep_unmet;
387         struct list_head physical_node_list;
388         struct mutex physical_node_lock;
389         void (*remove)(struct acpi_device *);
390 };
391
392 /* Non-device subnode */
393 struct acpi_data_node {
394         const char *name;
395         acpi_handle handle;
396         struct fwnode_handle fwnode;
397         struct fwnode_handle *parent;
398         struct acpi_device_data data;
399         struct list_head sibling;
400         struct kobject kobj;
401         struct completion kobj_done;
402 };
403
404 extern const struct fwnode_operations acpi_device_fwnode_ops;
405 extern const struct fwnode_operations acpi_data_fwnode_ops;
406 extern const struct fwnode_operations acpi_static_fwnode_ops;
407
408 bool is_acpi_device_node(const struct fwnode_handle *fwnode);
409 bool is_acpi_data_node(const struct fwnode_handle *fwnode);
410
411 static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
412 {
413         return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
414 }
415
416 #define to_acpi_device_node(__fwnode)                                   \
417         ({                                                              \
418                 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
419                                                                         \
420                 is_acpi_device_node(__to_acpi_device_node_fwnode) ?     \
421                         container_of(__to_acpi_device_node_fwnode,      \
422                                      struct acpi_device, fwnode) :      \
423                         NULL;                                           \
424         })
425
426 #define to_acpi_data_node(__fwnode)                                     \
427         ({                                                              \
428                 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
429                                                                         \
430                 is_acpi_data_node(__to_acpi_data_node_fwnode) ?         \
431                         container_of(__to_acpi_data_node_fwnode,        \
432                                      struct acpi_data_node, fwnode) :   \
433                         NULL;                                           \
434         })
435
436 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
437 {
438         return !IS_ERR_OR_NULL(fwnode) &&
439                 fwnode->ops == &acpi_static_fwnode_ops;
440 }
441
442 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
443                                         const char *name)
444 {
445         return is_acpi_data_node(fwnode) ?
446                 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
447 }
448
449 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
450 {
451         return &adev->fwnode;
452 }
453
454 static inline void *acpi_driver_data(struct acpi_device *d)
455 {
456         return d->driver_data;
457 }
458
459 #define to_acpi_device(d)       container_of(d, struct acpi_device, dev)
460 #define to_acpi_driver(d)       container_of(d, struct acpi_driver, drv)
461
462 static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev)
463 {
464         if (adev->dev.parent)
465                 return to_acpi_device(adev->dev.parent);
466
467         return NULL;
468 }
469
470 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
471 {
472         *((u32 *)&adev->status) = sta;
473 }
474
475 static inline void acpi_set_hp_context(struct acpi_device *adev,
476                                        struct acpi_hotplug_context *hp)
477 {
478         hp->self = adev;
479         adev->hp = hp;
480 }
481
482 void acpi_initialize_hp_context(struct acpi_device *adev,
483                                 struct acpi_hotplug_context *hp,
484                                 int (*notify)(struct acpi_device *, u32),
485                                 void (*uevent)(struct acpi_device *, u32));
486
487 /* acpi_device.dev.bus == &acpi_bus_type */
488 extern struct bus_type acpi_bus_type;
489
490 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
491 int acpi_dev_for_each_child(struct acpi_device *adev,
492                             int (*fn)(struct acpi_device *, void *), void *data);
493 int acpi_dev_for_each_child_reverse(struct acpi_device *adev,
494                                     int (*fn)(struct acpi_device *, void *),
495                                     void *data);
496
497 /*
498  * Events
499  * ------
500  */
501
502 struct acpi_bus_event {
503         struct list_head node;
504         acpi_device_class device_class;
505         acpi_bus_id bus_id;
506         u32 type;
507         u32 data;
508 };
509
510 extern struct kobject *acpi_kobj;
511 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
512 void acpi_bus_private_data_handler(acpi_handle, void *);
513 int acpi_bus_get_private_data(acpi_handle, void **);
514 int acpi_bus_attach_private_data(acpi_handle, void *);
515 void acpi_bus_detach_private_data(acpi_handle);
516 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
517 extern int register_acpi_notifier(struct notifier_block *);
518 extern int unregister_acpi_notifier(struct notifier_block *);
519
520 /*
521  * External Functions
522  */
523
524 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
525                                        unsigned long long *sta);
526 int acpi_bus_get_status(struct acpi_device *device);
527
528 int acpi_bus_set_power(acpi_handle handle, int state);
529 const char *acpi_power_state_string(int state);
530 int acpi_device_set_power(struct acpi_device *device, int state);
531 int acpi_bus_init_power(struct acpi_device *device);
532 int acpi_device_fix_up_power(struct acpi_device *device);
533 void acpi_device_fix_up_power_extended(struct acpi_device *adev);
534 int acpi_bus_update_power(acpi_handle handle, int *state_p);
535 int acpi_device_update_power(struct acpi_device *device, int *state_p);
536 bool acpi_bus_power_manageable(acpi_handle handle);
537 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev);
538 u8 acpi_dev_power_state_for_wake(struct acpi_device *adev);
539 int acpi_device_power_add_dependent(struct acpi_device *adev,
540                                     struct device *dev);
541 void acpi_device_power_remove_dependent(struct acpi_device *adev,
542                                         struct device *dev);
543
544 #ifdef CONFIG_PM
545 bool acpi_bus_can_wakeup(acpi_handle handle);
546 #else
547 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
548 #endif
549
550 void acpi_scan_lock_acquire(void);
551 void acpi_scan_lock_release(void);
552 void acpi_lock_hp_context(void);
553 void acpi_unlock_hp_context(void);
554 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
555 int acpi_bus_register_driver(struct acpi_driver *driver);
556 void acpi_bus_unregister_driver(struct acpi_driver *driver);
557 int acpi_bus_scan(acpi_handle handle);
558 void acpi_bus_trim(struct acpi_device *start);
559 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
560 int acpi_match_device_ids(struct acpi_device *device,
561                           const struct acpi_device_id *ids);
562 void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
563                        char *modalias, size_t len);
564 int acpi_create_dir(struct acpi_device *);
565 void acpi_remove_dir(struct acpi_device *);
566
567 static inline bool acpi_device_enumerated(struct acpi_device *adev)
568 {
569         return adev && adev->flags.initialized && adev->flags.visited;
570 }
571
572 /**
573  * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
574  * @__acpi_driver: acpi_driver struct
575  *
576  * Helper macro for ACPI drivers which do not do anything special in module
577  * init/exit. This eliminates a lot of boilerplate. Each module may only
578  * use this macro once, and calling it replaces module_init() and module_exit()
579  */
580 #define module_acpi_driver(__acpi_driver) \
581         module_driver(__acpi_driver, acpi_bus_register_driver, \
582                       acpi_bus_unregister_driver)
583
584 /*
585  * Bind physical devices with ACPI devices
586  */
587 struct acpi_bus_type {
588         struct list_head list;
589         const char *name;
590         bool (*match)(struct device *dev);
591         struct acpi_device * (*find_companion)(struct device *);
592         void (*setup)(struct device *);
593 };
594 int register_acpi_bus_type(struct acpi_bus_type *);
595 int unregister_acpi_bus_type(struct acpi_bus_type *);
596 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
597 int acpi_unbind_one(struct device *dev);
598
599 enum acpi_bridge_type {
600         ACPI_BRIDGE_TYPE_PCIE = 1,
601         ACPI_BRIDGE_TYPE_CXL,
602 };
603
604 struct acpi_pci_root {
605         struct acpi_device * device;
606         struct pci_bus *bus;
607         u16 segment;
608         int bridge_type;
609         struct resource secondary;      /* downstream bus range */
610
611         u32 osc_support_set;            /* _OSC state of support bits */
612         u32 osc_control_set;            /* _OSC state of control bits */
613         u32 osc_ext_support_set;        /* _OSC state of extended support bits */
614         u32 osc_ext_control_set;        /* _OSC state of extended control bits */
615         phys_addr_t mcfg_addr;
616 };
617
618 /* helper */
619
620 bool acpi_dma_supported(const struct acpi_device *adev);
621 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
622 int acpi_iommu_fwspec_init(struct device *dev, u32 id,
623                            struct fwnode_handle *fwnode,
624                            const struct iommu_ops *ops);
625 int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map);
626 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
627                            const u32 *input_id);
628 static inline int acpi_dma_configure(struct device *dev,
629                                      enum dev_dma_attr attr)
630 {
631         return acpi_dma_configure_id(dev, attr, NULL);
632 }
633 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
634                                            u64 address, bool check_children);
635 struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev,
636                                            acpi_bus_address adr);
637 int acpi_is_root_bridge(acpi_handle);
638 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
639
640 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
641 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
642
643 #ifdef CONFIG_X86
644 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status);
645 bool acpi_quirk_skip_acpi_ac_and_battery(void);
646 #else
647 static inline bool acpi_device_override_status(struct acpi_device *adev,
648                                                unsigned long long *status)
649 {
650         return false;
651 }
652 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void)
653 {
654         return false;
655 }
656 #endif
657
658 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
659 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
660 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
661 bool acpi_quirk_skip_gpio_event_handlers(void);
662 #else
663 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
664 {
665         return false;
666 }
667 static inline int
668 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
669 {
670         *skip = false;
671         return 0;
672 }
673 static inline bool acpi_quirk_skip_gpio_event_handlers(void)
674 {
675         return false;
676 }
677 #endif
678
679 #ifdef CONFIG_PM
680 void acpi_pm_wakeup_event(struct device *dev);
681 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
682                         void (*func)(struct acpi_device_wakeup_context *context));
683 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
684 bool acpi_pm_device_can_wakeup(struct device *dev);
685 int acpi_pm_device_sleep_state(struct device *, int *, int);
686 int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
687 #else
688 static inline void acpi_pm_wakeup_event(struct device *dev)
689 {
690 }
691 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
692                                                struct device *dev,
693                                                void (*func)(struct acpi_device_wakeup_context *context))
694 {
695         return AE_SUPPORT;
696 }
697 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
698 {
699         return AE_SUPPORT;
700 }
701 static inline bool acpi_pm_device_can_wakeup(struct device *dev)
702 {
703         return false;
704 }
705 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
706 {
707         if (p)
708                 *p = ACPI_STATE_D0;
709
710         return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
711                 m : ACPI_STATE_D0;
712 }
713 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
714 {
715         return -ENODEV;
716 }
717 #endif
718
719 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
720 bool acpi_sleep_state_supported(u8 sleep_state);
721 #else
722 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
723 #endif
724
725 #ifdef CONFIG_ACPI_SLEEP
726 u32 acpi_target_system_state(void);
727 #else
728 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
729 #endif
730
731 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
732 {
733         return adev->flags.power_manageable;
734 }
735
736 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
737 {
738         return adev->wakeup.flags.valid;
739 }
740
741 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
742 {
743         return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
744                 ((acpi_gbl_FADT.header.revision < 6) &&
745                 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
746 }
747
748 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
749 int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer);
750
751 void acpi_dev_clear_dependencies(struct acpi_device *supplier);
752 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device);
753 struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier,
754                                                    struct acpi_device *start);
755
756 /**
757  * for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a
758  *                              given supplier
759  * @supplier: Pointer to the supplier's ACPI device
760  * @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL
761  */
762 #define for_each_acpi_consumer_dev(supplier, consumer)                  \
763         for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \
764              consumer;                                                  \
765              consumer = acpi_dev_get_next_consumer_dev(supplier, consumer))
766
767 struct acpi_device *
768 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
769 struct acpi_device *
770 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
771
772 /**
773  * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
774  * @adev: pointer to the matching ACPI device, NULL at the end of the loop
775  * @hid: Hardware ID of the device.
776  * @uid: Unique ID of the device, pass NULL to not check _UID
777  * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
778  *
779  * The caller is responsible for invoking acpi_dev_put() on the returned device.
780  */
781 #define for_each_acpi_dev_match(adev, hid, uid, hrv)                    \
782         for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv);        \
783              adev;                                                      \
784              adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
785
786 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
787 {
788         return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
789 }
790
791 static inline void acpi_dev_put(struct acpi_device *adev)
792 {
793         if (adev)
794                 put_device(&adev->dev);
795 }
796
797 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle);
798 struct acpi_device *acpi_get_acpi_dev(acpi_handle handle);
799
800 static inline void acpi_put_acpi_dev(struct acpi_device *adev)
801 {
802         acpi_dev_put(adev);
803 }
804 #else   /* CONFIG_ACPI */
805
806 static inline int register_acpi_bus_type(void *bus) { return 0; }
807 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
808
809 #endif                          /* CONFIG_ACPI */
810
811 #endif /*__ACPI_BUS_H__*/