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 honor_deps:1;
206 u32 reserved:18;
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 u8 state_for_enumeration; /* Deepest power state for enumeration */
283 };
284
285 struct acpi_dep_data {
286 struct list_head node;
287 acpi_handle supplier;
288 acpi_handle consumer;
289 bool honor_dep;
290 };
291
292 /* Performance Management */
293
294 struct acpi_device_perf_flags {
295 u8 reserved:8;
296 };
297
298 struct acpi_device_perf_state {
299 struct {
300 u8 valid:1;
301 u8 reserved:7;
302 } flags;
303 u8 power; /* % Power (compared to P0) */
304 u8 performance; /* % Performance ( " ) */
305 int latency; /* Px->P0 time (microseconds) */
306 };
307
308 struct acpi_device_perf {
309 int state;
310 struct acpi_device_perf_flags flags;
311 int state_count;
312 struct acpi_device_perf_state *states;
313 };
314
315 /* Wakeup Management */
316 struct acpi_device_wakeup_flags {
317 u8 valid:1; /* Can successfully enable wakeup? */
318 u8 notifier_present:1; /* Wake-up notify handler has been installed */
319 };
320
321 struct acpi_device_wakeup_context {
322 void (*func)(struct acpi_device_wakeup_context *context);
323 struct device *dev;
324 };
325
326 struct acpi_device_wakeup {
327 acpi_handle gpe_device;
328 u64 gpe_number;
329 u64 sleep_state;
330 struct list_head resources;
331 struct acpi_device_wakeup_flags flags;
332 struct acpi_device_wakeup_context context;
333 struct wakeup_source *ws;
334 int prepare_count;
335 int enable_count;
336 };
337
338 struct acpi_device_physical_node {
339 unsigned int node_id;
340 struct list_head node;
341 struct device *dev;
342 bool put_online:1;
343 };
344
345 struct acpi_device_properties {
346 const guid_t *guid;
347 const union acpi_object *properties;
348 struct list_head list;
349 };
350
351 /* ACPI Device Specific Data (_DSD) */
352 struct acpi_device_data {
353 const union acpi_object *pointer;
354 struct list_head properties;
355 const union acpi_object *of_compatible;
356 struct list_head subnodes;
357 };
358
359 struct acpi_gpio_mapping;
360
361 /* Device */
362 struct acpi_device {
363 u32 pld_crc;
364 int device_type;
365 acpi_handle handle; /* no handle for fixed hardware */
366 struct fwnode_handle fwnode;
367 struct acpi_device *parent;
368 struct list_head children;
369 struct list_head node;
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 struct acpi_driver *driver;
383 const struct acpi_gpio_mapping *driver_gpios;
384 void *driver_data;
385 struct device dev;
386 unsigned int physical_node_count;
387 unsigned int dep_unmet;
388 struct list_head physical_node_list;
389 struct mutex physical_node_lock;
390 void (*remove)(struct acpi_device *);
391 };
392
393 /* Non-device subnode */
394 struct acpi_data_node {
395 const char *name;
396 acpi_handle handle;
397 struct fwnode_handle fwnode;
398 struct fwnode_handle *parent;
399 struct acpi_device_data data;
400 struct list_head sibling;
401 struct kobject kobj;
402 struct completion kobj_done;
403 };
404
405 extern const struct fwnode_operations acpi_device_fwnode_ops;
406 extern const struct fwnode_operations acpi_data_fwnode_ops;
407 extern const struct fwnode_operations acpi_static_fwnode_ops;
408
409 bool is_acpi_device_node(const struct fwnode_handle *fwnode);
410 bool is_acpi_data_node(const struct fwnode_handle *fwnode);
411
is_acpi_node(const struct fwnode_handle * fwnode)412 static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
413 {
414 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
415 }
416
417 #define to_acpi_device_node(__fwnode) \
418 ({ \
419 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
420 \
421 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \
422 container_of(__to_acpi_device_node_fwnode, \
423 struct acpi_device, fwnode) : \
424 NULL; \
425 })
426
427 #define to_acpi_data_node(__fwnode) \
428 ({ \
429 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
430 \
431 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \
432 container_of(__to_acpi_data_node_fwnode, \
433 struct acpi_data_node, fwnode) : \
434 NULL; \
435 })
436
is_acpi_static_node(const struct fwnode_handle * fwnode)437 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
438 {
439 return !IS_ERR_OR_NULL(fwnode) &&
440 fwnode->ops == &acpi_static_fwnode_ops;
441 }
442
acpi_data_node_match(const struct fwnode_handle * fwnode,const char * name)443 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
444 const char *name)
445 {
446 return is_acpi_data_node(fwnode) ?
447 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
448 }
449
acpi_fwnode_handle(struct acpi_device * adev)450 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
451 {
452 return &adev->fwnode;
453 }
454
acpi_driver_data(struct acpi_device * d)455 static inline void *acpi_driver_data(struct acpi_device *d)
456 {
457 return d->driver_data;
458 }
459
460 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
461 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
462
acpi_set_device_status(struct acpi_device * adev,u32 sta)463 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
464 {
465 *((u32 *)&adev->status) = sta;
466 }
467
acpi_set_hp_context(struct acpi_device * adev,struct acpi_hotplug_context * hp)468 static inline void acpi_set_hp_context(struct acpi_device *adev,
469 struct acpi_hotplug_context *hp)
470 {
471 hp->self = adev;
472 adev->hp = hp;
473 }
474
475 void acpi_initialize_hp_context(struct acpi_device *adev,
476 struct acpi_hotplug_context *hp,
477 int (*notify)(struct acpi_device *, u32),
478 void (*uevent)(struct acpi_device *, u32));
479
480 /* acpi_device.dev.bus == &acpi_bus_type */
481 extern struct bus_type acpi_bus_type;
482
483 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
484 int acpi_dev_for_each_child(struct acpi_device *adev,
485 int (*fn)(struct acpi_device *, void *), void *data);
486
487 /*
488 * Events
489 * ------
490 */
491
492 struct acpi_bus_event {
493 struct list_head node;
494 acpi_device_class device_class;
495 acpi_bus_id bus_id;
496 u32 type;
497 u32 data;
498 };
499
500 extern struct kobject *acpi_kobj;
501 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
502 void acpi_bus_private_data_handler(acpi_handle, void *);
503 int acpi_bus_get_private_data(acpi_handle, void **);
504 int acpi_bus_attach_private_data(acpi_handle, void *);
505 void acpi_bus_detach_private_data(acpi_handle);
506 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
507 extern int register_acpi_notifier(struct notifier_block *);
508 extern int unregister_acpi_notifier(struct notifier_block *);
509
510 /*
511 * External Functions
512 */
513
514 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle);
515 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
516 unsigned long long *sta);
517 int acpi_bus_get_status(struct acpi_device *device);
518
519 int acpi_bus_set_power(acpi_handle handle, int state);
520 const char *acpi_power_state_string(int state);
521 int acpi_device_set_power(struct acpi_device *device, int state);
522 int acpi_bus_init_power(struct acpi_device *device);
523 int acpi_device_fix_up_power(struct acpi_device *device);
524 int acpi_bus_update_power(acpi_handle handle, int *state_p);
525 int acpi_device_update_power(struct acpi_device *device, int *state_p);
526 bool acpi_bus_power_manageable(acpi_handle handle);
527 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev);
528 int acpi_device_power_add_dependent(struct acpi_device *adev,
529 struct device *dev);
530 void acpi_device_power_remove_dependent(struct acpi_device *adev,
531 struct device *dev);
532
533 #ifdef CONFIG_PM
534 bool acpi_bus_can_wakeup(acpi_handle handle);
535 #else
acpi_bus_can_wakeup(acpi_handle handle)536 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
537 #endif
538
539 void acpi_scan_lock_acquire(void);
540 void acpi_scan_lock_release(void);
541 void acpi_lock_hp_context(void);
542 void acpi_unlock_hp_context(void);
543 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
544 int acpi_bus_register_driver(struct acpi_driver *driver);
545 void acpi_bus_unregister_driver(struct acpi_driver *driver);
546 int acpi_bus_scan(acpi_handle handle);
547 void acpi_bus_trim(struct acpi_device *start);
548 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
549 int acpi_match_device_ids(struct acpi_device *device,
550 const struct acpi_device_id *ids);
551 void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
552 char *modalias, size_t len);
553 int acpi_create_dir(struct acpi_device *);
554 void acpi_remove_dir(struct acpi_device *);
555
acpi_device_enumerated(struct acpi_device * adev)556 static inline bool acpi_device_enumerated(struct acpi_device *adev)
557 {
558 return adev && adev->flags.initialized && adev->flags.visited;
559 }
560
561 /**
562 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
563 * @__acpi_driver: acpi_driver struct
564 *
565 * Helper macro for ACPI drivers which do not do anything special in module
566 * init/exit. This eliminates a lot of boilerplate. Each module may only
567 * use this macro once, and calling it replaces module_init() and module_exit()
568 */
569 #define module_acpi_driver(__acpi_driver) \
570 module_driver(__acpi_driver, acpi_bus_register_driver, \
571 acpi_bus_unregister_driver)
572
573 /*
574 * Bind physical devices with ACPI devices
575 */
576 struct acpi_bus_type {
577 struct list_head list;
578 const char *name;
579 bool (*match)(struct device *dev);
580 struct acpi_device * (*find_companion)(struct device *);
581 void (*setup)(struct device *);
582 };
583 int register_acpi_bus_type(struct acpi_bus_type *);
584 int unregister_acpi_bus_type(struct acpi_bus_type *);
585 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
586 int acpi_unbind_one(struct device *dev);
587
588 enum acpi_bridge_type {
589 ACPI_BRIDGE_TYPE_PCIE = 1,
590 ACPI_BRIDGE_TYPE_CXL,
591 };
592
593 struct acpi_pci_root {
594 struct acpi_device * device;
595 struct pci_bus *bus;
596 u16 segment;
597 int bridge_type;
598 struct resource secondary; /* downstream bus range */
599
600 u32 osc_support_set; /* _OSC state of support bits */
601 u32 osc_control_set; /* _OSC state of control bits */
602 u32 osc_ext_support_set; /* _OSC state of extended support bits */
603 u32 osc_ext_control_set; /* _OSC state of extended control bits */
604 phys_addr_t mcfg_addr;
605 };
606
607 /* helper */
608
609 bool acpi_dma_supported(const struct acpi_device *adev);
610 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
611 int acpi_iommu_fwspec_init(struct device *dev, u32 id,
612 struct fwnode_handle *fwnode,
613 const struct iommu_ops *ops);
614 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset,
615 u64 *size);
616 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
617 const u32 *input_id);
acpi_dma_configure(struct device * dev,enum dev_dma_attr attr)618 static inline int acpi_dma_configure(struct device *dev,
619 enum dev_dma_attr attr)
620 {
621 return acpi_dma_configure_id(dev, attr, NULL);
622 }
623 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
624 u64 address, bool check_children);
625 int acpi_is_root_bridge(acpi_handle);
626 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
627
628 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
629 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
630
631 #ifdef CONFIG_X86
632 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status);
633 bool acpi_quirk_skip_acpi_ac_and_battery(void);
634 #else
acpi_device_override_status(struct acpi_device * adev,unsigned long long * status)635 static inline bool acpi_device_override_status(struct acpi_device *adev,
636 unsigned long long *status)
637 {
638 return false;
639 }
acpi_quirk_skip_acpi_ac_and_battery(void)640 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void)
641 {
642 return false;
643 }
644 #endif
645
646 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
647 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
648 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
649 #else
acpi_quirk_skip_i2c_client_enumeration(struct acpi_device * adev)650 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
651 {
652 return false;
653 }
654 static inline int
acpi_quirk_skip_serdev_enumeration(struct device * controller_parent,bool * skip)655 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
656 {
657 *skip = false;
658 return 0;
659 }
660 #endif
661
662 #ifdef CONFIG_PM
663 void acpi_pm_wakeup_event(struct device *dev);
664 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
665 void (*func)(struct acpi_device_wakeup_context *context));
666 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
667 bool acpi_pm_device_can_wakeup(struct device *dev);
668 int acpi_pm_device_sleep_state(struct device *, int *, int);
669 int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
670 #else
acpi_pm_wakeup_event(struct device * dev)671 static inline void acpi_pm_wakeup_event(struct device *dev)
672 {
673 }
acpi_add_pm_notifier(struct acpi_device * adev,struct device * dev,void (* func)(struct acpi_device_wakeup_context * context))674 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
675 struct device *dev,
676 void (*func)(struct acpi_device_wakeup_context *context))
677 {
678 return AE_SUPPORT;
679 }
acpi_remove_pm_notifier(struct acpi_device * adev)680 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
681 {
682 return AE_SUPPORT;
683 }
acpi_pm_device_can_wakeup(struct device * dev)684 static inline bool acpi_pm_device_can_wakeup(struct device *dev)
685 {
686 return false;
687 }
acpi_pm_device_sleep_state(struct device * d,int * p,int m)688 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
689 {
690 if (p)
691 *p = ACPI_STATE_D0;
692
693 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
694 m : ACPI_STATE_D0;
695 }
acpi_pm_set_device_wakeup(struct device * dev,bool enable)696 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
697 {
698 return -ENODEV;
699 }
700 #endif
701
702 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
703 bool acpi_sleep_state_supported(u8 sleep_state);
704 #else
acpi_sleep_state_supported(u8 sleep_state)705 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
706 #endif
707
708 #ifdef CONFIG_ACPI_SLEEP
709 u32 acpi_target_system_state(void);
710 #else
acpi_target_system_state(void)711 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
712 #endif
713
acpi_device_power_manageable(struct acpi_device * adev)714 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
715 {
716 return adev->flags.power_manageable;
717 }
718
acpi_device_can_wakeup(struct acpi_device * adev)719 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
720 {
721 return adev->wakeup.flags.valid;
722 }
723
acpi_device_can_poweroff(struct acpi_device * adev)724 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
725 {
726 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
727 ((acpi_gbl_FADT.header.revision < 6) &&
728 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
729 }
730
731 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
732
733 void acpi_dev_clear_dependencies(struct acpi_device *supplier);
734 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device);
735 struct acpi_device *acpi_dev_get_first_consumer_dev(struct acpi_device *supplier);
736 struct acpi_device *
737 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
738 struct acpi_device *
739 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
740
741 /**
742 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
743 * @adev: pointer to the matching ACPI device, NULL at the end of the loop
744 * @hid: Hardware ID of the device.
745 * @uid: Unique ID of the device, pass NULL to not check _UID
746 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
747 *
748 * The caller is responsible for invoking acpi_dev_put() on the returned device.
749 */
750 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \
751 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \
752 adev; \
753 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
754
acpi_dev_get(struct acpi_device * adev)755 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
756 {
757 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
758 }
759
acpi_dev_put(struct acpi_device * adev)760 static inline void acpi_dev_put(struct acpi_device *adev)
761 {
762 if (adev)
763 put_device(&adev->dev);
764 }
765
766 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
767
acpi_bus_put_acpi_device(struct acpi_device * adev)768 static inline void acpi_bus_put_acpi_device(struct acpi_device *adev)
769 {
770 acpi_dev_put(adev);
771 }
772 #else /* CONFIG_ACPI */
773
register_acpi_bus_type(void * bus)774 static inline int register_acpi_bus_type(void *bus) { return 0; }
unregister_acpi_bus_type(void * bus)775 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
776
777 #endif /* CONFIG_ACPI */
778
779 #endif /*__ACPI_BUS_H__*/
780