crypto: engine - Remove prepare/unprepare request
[platform/kernel/linux-starfive.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         bool met;
293         bool free_when_met;
294 };
295
296 /* Performance Management */
297
298 struct acpi_device_perf_flags {
299         u8 reserved:8;
300 };
301
302 struct acpi_device_perf_state {
303         struct {
304                 u8 valid:1;
305                 u8 reserved:7;
306         } flags;
307         u8 power;               /* % Power (compared to P0) */
308         u8 performance;         /* % Performance (    "   ) */
309         int latency;            /* Px->P0 time (microseconds) */
310 };
311
312 struct acpi_device_perf {
313         int state;
314         struct acpi_device_perf_flags flags;
315         int state_count;
316         struct acpi_device_perf_state *states;
317 };
318
319 /* Wakeup Management */
320 struct acpi_device_wakeup_flags {
321         u8 valid:1;             /* Can successfully enable wakeup? */
322         u8 notifier_present:1;  /* Wake-up notify handler has been installed */
323 };
324
325 struct acpi_device_wakeup_context {
326         void (*func)(struct acpi_device_wakeup_context *context);
327         struct device *dev;
328 };
329
330 struct acpi_device_wakeup {
331         acpi_handle gpe_device;
332         u64 gpe_number;
333         u64 sleep_state;
334         struct list_head resources;
335         struct acpi_device_wakeup_flags flags;
336         struct acpi_device_wakeup_context context;
337         struct wakeup_source *ws;
338         int prepare_count;
339         int enable_count;
340 };
341
342 struct acpi_device_physical_node {
343         unsigned int node_id;
344         struct list_head node;
345         struct device *dev;
346         bool put_online:1;
347 };
348
349 struct acpi_device_properties {
350         const guid_t *guid;
351         union acpi_object *properties;
352         struct list_head list;
353         void **bufs;
354 };
355
356 /* ACPI Device Specific Data (_DSD) */
357 struct acpi_device_data {
358         const union acpi_object *pointer;
359         struct list_head properties;
360         const union acpi_object *of_compatible;
361         struct list_head subnodes;
362 };
363
364 struct acpi_gpio_mapping;
365
366 /* Device */
367 struct acpi_device {
368         u32 pld_crc;
369         int device_type;
370         acpi_handle handle;             /* no handle for fixed hardware */
371         struct fwnode_handle fwnode;
372         struct list_head wakeup_list;
373         struct list_head del_list;
374         struct acpi_device_status status;
375         struct acpi_device_flags flags;
376         struct acpi_device_pnp pnp;
377         struct acpi_device_power power;
378         struct acpi_device_wakeup wakeup;
379         struct acpi_device_perf performance;
380         struct acpi_device_dir dir;
381         struct acpi_device_data data;
382         struct acpi_scan_handler *handler;
383         struct acpi_hotplug_context *hp;
384         const struct acpi_gpio_mapping *driver_gpios;
385         void *driver_data;
386         struct device dev;
387         unsigned int physical_node_count;
388         unsigned int dep_unmet;
389         struct list_head physical_node_list;
390         struct mutex physical_node_lock;
391         void (*remove)(struct acpi_device *);
392 };
393
394 /* Non-device subnode */
395 struct acpi_data_node {
396         const char *name;
397         acpi_handle handle;
398         struct fwnode_handle fwnode;
399         struct fwnode_handle *parent;
400         struct acpi_device_data data;
401         struct list_head sibling;
402         struct kobject kobj;
403         struct completion kobj_done;
404 };
405
406 extern const struct fwnode_operations acpi_device_fwnode_ops;
407 extern const struct fwnode_operations acpi_data_fwnode_ops;
408 extern const struct fwnode_operations acpi_static_fwnode_ops;
409
410 bool is_acpi_device_node(const struct fwnode_handle *fwnode);
411 bool is_acpi_data_node(const struct fwnode_handle *fwnode);
412
413 static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
414 {
415         return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
416 }
417
418 #define to_acpi_device_node(__fwnode)                                   \
419         ({                                                              \
420                 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
421                                                                         \
422                 is_acpi_device_node(__to_acpi_device_node_fwnode) ?     \
423                         container_of(__to_acpi_device_node_fwnode,      \
424                                      struct acpi_device, fwnode) :      \
425                         NULL;                                           \
426         })
427
428 #define to_acpi_data_node(__fwnode)                                     \
429         ({                                                              \
430                 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
431                                                                         \
432                 is_acpi_data_node(__to_acpi_data_node_fwnode) ?         \
433                         container_of(__to_acpi_data_node_fwnode,        \
434                                      struct acpi_data_node, fwnode) :   \
435                         NULL;                                           \
436         })
437
438 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
439 {
440         return !IS_ERR_OR_NULL(fwnode) &&
441                 fwnode->ops == &acpi_static_fwnode_ops;
442 }
443
444 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
445                                         const char *name)
446 {
447         return is_acpi_data_node(fwnode) ?
448                 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
449 }
450
451 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
452 {
453         return &adev->fwnode;
454 }
455
456 static inline void *acpi_driver_data(struct acpi_device *d)
457 {
458         return d->driver_data;
459 }
460
461 #define to_acpi_device(d)       container_of(d, struct acpi_device, dev)
462 #define to_acpi_driver(d)       container_of(d, struct acpi_driver, drv)
463
464 static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev)
465 {
466         if (adev->dev.parent)
467                 return to_acpi_device(adev->dev.parent);
468
469         return NULL;
470 }
471
472 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
473 {
474         *((u32 *)&adev->status) = sta;
475 }
476
477 static inline void acpi_set_hp_context(struct acpi_device *adev,
478                                        struct acpi_hotplug_context *hp)
479 {
480         hp->self = adev;
481         adev->hp = hp;
482 }
483
484 void acpi_initialize_hp_context(struct acpi_device *adev,
485                                 struct acpi_hotplug_context *hp,
486                                 int (*notify)(struct acpi_device *, u32),
487                                 void (*uevent)(struct acpi_device *, u32));
488
489 /* acpi_device.dev.bus == &acpi_bus_type */
490 extern struct bus_type acpi_bus_type;
491
492 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
493 int acpi_dev_for_each_child(struct acpi_device *adev,
494                             int (*fn)(struct acpi_device *, void *), void *data);
495 int acpi_dev_for_each_child_reverse(struct acpi_device *adev,
496                                     int (*fn)(struct acpi_device *, void *),
497                                     void *data);
498
499 /*
500  * Events
501  * ------
502  */
503
504 struct acpi_bus_event {
505         struct list_head node;
506         acpi_device_class device_class;
507         acpi_bus_id bus_id;
508         u32 type;
509         u32 data;
510 };
511
512 extern struct kobject *acpi_kobj;
513 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
514 void acpi_bus_private_data_handler(acpi_handle, void *);
515 int acpi_bus_get_private_data(acpi_handle, void **);
516 int acpi_bus_attach_private_data(acpi_handle, void *);
517 void acpi_bus_detach_private_data(acpi_handle);
518 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
519 extern int register_acpi_notifier(struct notifier_block *);
520 extern int unregister_acpi_notifier(struct notifier_block *);
521
522 /*
523  * External Functions
524  */
525
526 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
527                                        unsigned long long *sta);
528 int acpi_bus_get_status(struct acpi_device *device);
529
530 int acpi_bus_set_power(acpi_handle handle, int state);
531 const char *acpi_power_state_string(int state);
532 int acpi_device_set_power(struct acpi_device *device, int state);
533 int acpi_bus_init_power(struct acpi_device *device);
534 int acpi_device_fix_up_power(struct acpi_device *device);
535 void acpi_device_fix_up_power_extended(struct acpi_device *adev);
536 int acpi_bus_update_power(acpi_handle handle, int *state_p);
537 int acpi_device_update_power(struct acpi_device *device, int *state_p);
538 bool acpi_bus_power_manageable(acpi_handle handle);
539 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev);
540 u8 acpi_dev_power_state_for_wake(struct acpi_device *adev);
541 int acpi_device_power_add_dependent(struct acpi_device *adev,
542                                     struct device *dev);
543 void acpi_device_power_remove_dependent(struct acpi_device *adev,
544                                         struct device *dev);
545
546 #ifdef CONFIG_PM
547 bool acpi_bus_can_wakeup(acpi_handle handle);
548 #else
549 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
550 #endif
551
552 void acpi_scan_lock_acquire(void);
553 void acpi_scan_lock_release(void);
554 void acpi_lock_hp_context(void);
555 void acpi_unlock_hp_context(void);
556 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
557 int acpi_bus_register_driver(struct acpi_driver *driver);
558 void acpi_bus_unregister_driver(struct acpi_driver *driver);
559 int acpi_bus_scan(acpi_handle handle);
560 void acpi_bus_trim(struct acpi_device *start);
561 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
562 int acpi_match_device_ids(struct acpi_device *device,
563                           const struct acpi_device_id *ids);
564 void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
565                        char *modalias, size_t len);
566 int acpi_create_dir(struct acpi_device *);
567 void acpi_remove_dir(struct acpi_device *);
568
569 static inline bool acpi_device_enumerated(struct acpi_device *adev)
570 {
571         return adev && adev->flags.initialized && adev->flags.visited;
572 }
573
574 /**
575  * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
576  * @__acpi_driver: acpi_driver struct
577  *
578  * Helper macro for ACPI drivers which do not do anything special in module
579  * init/exit. This eliminates a lot of boilerplate. Each module may only
580  * use this macro once, and calling it replaces module_init() and module_exit()
581  */
582 #define module_acpi_driver(__acpi_driver) \
583         module_driver(__acpi_driver, acpi_bus_register_driver, \
584                       acpi_bus_unregister_driver)
585
586 /*
587  * Bind physical devices with ACPI devices
588  */
589 struct acpi_bus_type {
590         struct list_head list;
591         const char *name;
592         bool (*match)(struct device *dev);
593         struct acpi_device * (*find_companion)(struct device *);
594         void (*setup)(struct device *);
595 };
596 int register_acpi_bus_type(struct acpi_bus_type *);
597 int unregister_acpi_bus_type(struct acpi_bus_type *);
598 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
599 int acpi_unbind_one(struct device *dev);
600
601 enum acpi_bridge_type {
602         ACPI_BRIDGE_TYPE_PCIE = 1,
603         ACPI_BRIDGE_TYPE_CXL,
604 };
605
606 struct acpi_pci_root {
607         struct acpi_device * device;
608         struct pci_bus *bus;
609         u16 segment;
610         int bridge_type;
611         struct resource secondary;      /* downstream bus range */
612
613         u32 osc_support_set;            /* _OSC state of support bits */
614         u32 osc_control_set;            /* _OSC state of control bits */
615         u32 osc_ext_support_set;        /* _OSC state of extended support bits */
616         u32 osc_ext_control_set;        /* _OSC state of extended control bits */
617         phys_addr_t mcfg_addr;
618 };
619
620 /* helper */
621
622 bool acpi_dma_supported(const struct acpi_device *adev);
623 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
624 int acpi_iommu_fwspec_init(struct device *dev, u32 id,
625                            struct fwnode_handle *fwnode,
626                            const struct iommu_ops *ops);
627 int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map);
628 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
629                            const u32 *input_id);
630 static inline int acpi_dma_configure(struct device *dev,
631                                      enum dev_dma_attr attr)
632 {
633         return acpi_dma_configure_id(dev, attr, NULL);
634 }
635 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
636                                            u64 address, bool check_children);
637 struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev,
638                                            acpi_bus_address adr);
639 int acpi_is_root_bridge(acpi_handle);
640 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
641
642 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
643 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
644
645 #ifdef CONFIG_X86
646 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status);
647 bool acpi_quirk_skip_acpi_ac_and_battery(void);
648 #else
649 static inline bool acpi_device_override_status(struct acpi_device *adev,
650                                                unsigned long long *status)
651 {
652         return false;
653 }
654 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void)
655 {
656         return false;
657 }
658 #endif
659
660 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
661 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
662 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
663 bool acpi_quirk_skip_gpio_event_handlers(void);
664 #else
665 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
666 {
667         return false;
668 }
669 static inline int
670 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
671 {
672         *skip = false;
673         return 0;
674 }
675 static inline bool acpi_quirk_skip_gpio_event_handlers(void)
676 {
677         return false;
678 }
679 #endif
680
681 #ifdef CONFIG_PM
682 void acpi_pm_wakeup_event(struct device *dev);
683 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
684                         void (*func)(struct acpi_device_wakeup_context *context));
685 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
686 bool acpi_pm_device_can_wakeup(struct device *dev);
687 int acpi_pm_device_sleep_state(struct device *, int *, int);
688 int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
689 #else
690 static inline void acpi_pm_wakeup_event(struct device *dev)
691 {
692 }
693 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
694                                                struct device *dev,
695                                                void (*func)(struct acpi_device_wakeup_context *context))
696 {
697         return AE_SUPPORT;
698 }
699 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
700 {
701         return AE_SUPPORT;
702 }
703 static inline bool acpi_pm_device_can_wakeup(struct device *dev)
704 {
705         return false;
706 }
707 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
708 {
709         if (p)
710                 *p = ACPI_STATE_D0;
711
712         return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
713                 m : ACPI_STATE_D0;
714 }
715 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
716 {
717         return -ENODEV;
718 }
719 #endif
720
721 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
722 bool acpi_sleep_state_supported(u8 sleep_state);
723 #else
724 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
725 #endif
726
727 #ifdef CONFIG_ACPI_SLEEP
728 u32 acpi_target_system_state(void);
729 #else
730 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
731 #endif
732
733 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
734 {
735         return adev->flags.power_manageable;
736 }
737
738 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
739 {
740         return adev->wakeup.flags.valid;
741 }
742
743 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
744 {
745         return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
746                 ((acpi_gbl_FADT.header.revision < 6) &&
747                 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
748 }
749
750 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
751 int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer);
752
753 void acpi_dev_clear_dependencies(struct acpi_device *supplier);
754 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device);
755 struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier,
756                                                    struct acpi_device *start);
757
758 /**
759  * for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a
760  *                              given supplier
761  * @supplier: Pointer to the supplier's ACPI device
762  * @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL
763  */
764 #define for_each_acpi_consumer_dev(supplier, consumer)                  \
765         for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \
766              consumer;                                                  \
767              consumer = acpi_dev_get_next_consumer_dev(supplier, consumer))
768
769 struct acpi_device *
770 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
771 struct acpi_device *
772 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
773
774 /**
775  * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
776  * @adev: pointer to the matching ACPI device, NULL at the end of the loop
777  * @hid: Hardware ID of the device.
778  * @uid: Unique ID of the device, pass NULL to not check _UID
779  * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
780  *
781  * The caller is responsible for invoking acpi_dev_put() on the returned device.
782  */
783 #define for_each_acpi_dev_match(adev, hid, uid, hrv)                    \
784         for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv);        \
785              adev;                                                      \
786              adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
787
788 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
789 {
790         return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
791 }
792
793 static inline void acpi_dev_put(struct acpi_device *adev)
794 {
795         if (adev)
796                 put_device(&adev->dev);
797 }
798
799 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle);
800 struct acpi_device *acpi_get_acpi_dev(acpi_handle handle);
801
802 static inline void acpi_put_acpi_dev(struct acpi_device *adev)
803 {
804         acpi_dev_put(adev);
805 }
806 #else   /* CONFIG_ACPI */
807
808 static inline int register_acpi_bus_type(void *bus) { return 0; }
809 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
810
811 #endif                          /* CONFIG_ACPI */
812
813 #endif /*__ACPI_BUS_H__*/