1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
5 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
6 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
10 #define __ACPI_BUS_H__
12 #include <linux/device.h>
13 #include <linux/property.h>
15 struct acpi_handle_list {
22 acpi_extract_package(union acpi_object *package,
23 struct acpi_buffer *format, struct acpi_buffer *buffer);
25 acpi_evaluate_integer(acpi_handle handle,
27 struct acpi_object_list *arguments, unsigned long long *data);
29 acpi_evaluate_reference(acpi_handle handle,
31 struct acpi_object_list *arguments,
32 struct acpi_handle_list *list);
33 bool acpi_handle_list_equal(struct acpi_handle_list *list1,
34 struct acpi_handle_list *list2);
35 void acpi_handle_list_replace(struct acpi_handle_list *dst,
36 struct acpi_handle_list *src);
37 void acpi_handle_list_free(struct acpi_handle_list *list);
39 acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
40 struct acpi_buffer *status_buf);
43 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
45 bool acpi_has_method(acpi_handle handle, char *name);
46 acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
48 acpi_status acpi_evaluate_ej0(acpi_handle handle);
49 acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
50 acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function);
51 bool acpi_ata_match(acpi_handle handle);
52 bool acpi_bay_match(acpi_handle handle);
53 bool acpi_dock_match(acpi_handle handle);
55 bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs);
56 union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
57 u64 rev, u64 func, union acpi_object *argv4);
59 static inline union acpi_object *
60 acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev,
61 u64 func, union acpi_object *argv4,
62 acpi_object_type type)
64 union acpi_object *obj;
66 obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4);
67 if (obj && obj->type != type) {
76 #define ACPI_INIT_DSM_ARGV4(cnt, eles) \
78 .package.type = ACPI_TYPE_PACKAGE, \
79 .package.count = (cnt), \
80 .package.elements = (eles) \
83 bool acpi_dev_found(const char *hid);
84 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
85 bool acpi_reduced_hardware(void);
89 struct proc_dir_entry;
91 #define ACPI_BUS_FILE_ROOT "acpi"
92 extern struct proc_dir_entry *acpi_root_dir;
94 enum acpi_bus_device_type {
95 ACPI_BUS_TYPE_DEVICE = 0,
97 ACPI_BUS_TYPE_PROCESSOR,
98 ACPI_BUS_TYPE_THERMAL,
99 ACPI_BUS_TYPE_POWER_BUTTON,
100 ACPI_BUS_TYPE_SLEEP_BUTTON,
101 ACPI_BUS_TYPE_ECDT_EC,
102 ACPI_BUS_DEVICE_TYPE_COUNT
113 struct acpi_hotplug_profile {
115 int (*scan_dependent)(struct acpi_device *adev);
116 void (*notify_online)(struct acpi_device *adev);
118 bool demand_offline:1;
121 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
122 struct kobject *kobj)
124 return container_of(kobj, struct acpi_hotplug_profile, kobj);
127 struct acpi_scan_handler {
128 const struct acpi_device_id *ids;
129 struct list_head list_node;
130 bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
131 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
132 void (*detach)(struct acpi_device *dev);
133 void (*bind)(struct device *phys_dev);
134 void (*unbind)(struct device *phys_dev);
135 struct acpi_hotplug_profile hotplug;
139 * ACPI Hotplug Context
140 * --------------------
143 struct acpi_hotplug_context {
144 struct acpi_device *self;
145 int (*notify)(struct acpi_device *, u32);
146 void (*uevent)(struct acpi_device *, u32);
147 void (*fixup)(struct acpi_device *);
155 typedef int (*acpi_op_add) (struct acpi_device * device);
156 typedef void (*acpi_op_remove) (struct acpi_device *device);
157 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
159 struct acpi_device_ops {
161 acpi_op_remove remove;
162 acpi_op_notify notify;
165 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
170 const struct acpi_device_id *ids; /* Supported Hardware IDs */
172 struct acpi_device_ops ops;
173 struct device_driver drv;
174 struct module *owner;
184 struct acpi_device_status {
189 u32 battery_present:1;
195 struct acpi_device_flags {
196 u32 dynamic_status:1;
199 u32 power_manageable:1;
203 u32 hotplug_notify:1;
204 u32 is_dock_station:1;
205 u32 of_compatible_ok:1;
208 u32 enumeration_by_parent:1;
215 struct acpi_device_dir {
216 struct proc_dir_entry *entry;
219 #define acpi_device_dir(d) ((d)->dir.entry)
223 typedef char acpi_bus_id[8];
224 typedef u64 acpi_bus_address;
225 typedef char acpi_device_name[40];
226 typedef char acpi_device_class[20];
228 struct acpi_hardware_id {
229 struct list_head list;
233 struct acpi_pnp_type {
241 struct acpi_device_pnp {
242 acpi_bus_id bus_id; /* Object name */
243 int instance_no; /* Instance number of this object */
244 struct acpi_pnp_type type; /* ID type */
245 acpi_bus_address bus_address; /* _ADR */
246 char *unique_id; /* _UID */
247 struct list_head ids; /* _HID and _CIDs */
248 acpi_device_name device_name; /* Driver-determined */
249 acpi_device_class device_class; /* " */
250 union acpi_object *str_obj; /* unicode string for _STR method */
253 #define acpi_device_bid(d) ((d)->pnp.bus_id)
254 #define acpi_device_adr(d) ((d)->pnp.bus_address)
255 const char *acpi_device_hid(struct acpi_device *device);
256 #define acpi_device_uid(d) ((d)->pnp.unique_id)
257 #define acpi_device_name(d) ((d)->pnp.device_name)
258 #define acpi_device_class(d) ((d)->pnp.device_class)
260 /* Power Management */
262 struct acpi_device_power_flags {
263 u32 explicit_get:1; /* _PSC present? */
264 u32 power_resources:1; /* Power resources */
265 u32 inrush_current:1; /* Serialize Dx->D0 */
266 u32 power_removed:1; /* Optimize Dx->D0 */
267 u32 ignore_parent:1; /* Power is independent of parent power state */
268 u32 dsw_present:1; /* _DSW present? */
272 struct acpi_device_power_state {
275 u8 explicit_set:1; /* _PSx present? */
278 int power; /* % Power (compared to D0) */
279 int latency; /* Dx->D0 time (microseconds) */
280 struct list_head resources; /* Power resources referenced */
283 struct acpi_device_power {
284 int state; /* Current state */
285 struct acpi_device_power_flags flags;
286 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
287 u8 state_for_enumeration; /* Deepest power state for enumeration */
290 struct acpi_dep_data {
291 struct list_head node;
292 acpi_handle supplier;
293 acpi_handle consumer;
299 /* Performance Management */
301 struct acpi_device_perf_flags {
305 struct acpi_device_perf_state {
310 u8 power; /* % Power (compared to P0) */
311 u8 performance; /* % Performance ( " ) */
312 int latency; /* Px->P0 time (microseconds) */
315 struct acpi_device_perf {
317 struct acpi_device_perf_flags flags;
319 struct acpi_device_perf_state *states;
322 /* Wakeup Management */
323 struct acpi_device_wakeup_flags {
324 u8 valid:1; /* Can successfully enable wakeup? */
325 u8 notifier_present:1; /* Wake-up notify handler has been installed */
328 struct acpi_device_wakeup_context {
329 void (*func)(struct acpi_device_wakeup_context *context);
333 struct acpi_device_wakeup {
334 acpi_handle gpe_device;
337 struct list_head resources;
338 struct acpi_device_wakeup_flags flags;
339 struct acpi_device_wakeup_context context;
340 struct wakeup_source *ws;
345 struct acpi_device_physical_node {
346 unsigned int node_id;
347 struct list_head node;
352 struct acpi_device_properties {
354 union acpi_object *properties;
355 struct list_head list;
359 /* ACPI Device Specific Data (_DSD) */
360 struct acpi_device_data {
361 const union acpi_object *pointer;
362 struct list_head properties;
363 const union acpi_object *of_compatible;
364 struct list_head subnodes;
367 struct acpi_gpio_mapping;
373 acpi_handle handle; /* no handle for fixed hardware */
374 struct fwnode_handle fwnode;
375 struct list_head wakeup_list;
376 struct list_head del_list;
377 struct acpi_device_status status;
378 struct acpi_device_flags flags;
379 struct acpi_device_pnp pnp;
380 struct acpi_device_power power;
381 struct acpi_device_wakeup wakeup;
382 struct acpi_device_perf performance;
383 struct acpi_device_dir dir;
384 struct acpi_device_data data;
385 struct acpi_scan_handler *handler;
386 struct acpi_hotplug_context *hp;
387 const struct acpi_gpio_mapping *driver_gpios;
390 unsigned int physical_node_count;
391 unsigned int dep_unmet;
392 struct list_head physical_node_list;
393 struct mutex physical_node_lock;
394 void (*remove)(struct acpi_device *);
397 /* Non-device subnode */
398 struct acpi_data_node {
401 struct fwnode_handle fwnode;
402 struct fwnode_handle *parent;
403 struct acpi_device_data data;
404 struct list_head sibling;
406 struct completion kobj_done;
409 extern const struct fwnode_operations acpi_device_fwnode_ops;
410 extern const struct fwnode_operations acpi_data_fwnode_ops;
411 extern const struct fwnode_operations acpi_static_fwnode_ops;
413 bool is_acpi_device_node(const struct fwnode_handle *fwnode);
414 bool is_acpi_data_node(const struct fwnode_handle *fwnode);
416 static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
418 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
421 #define to_acpi_device_node(__fwnode) \
423 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
425 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \
426 container_of(__to_acpi_device_node_fwnode, \
427 struct acpi_device, fwnode) : \
431 #define to_acpi_data_node(__fwnode) \
433 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
435 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \
436 container_of(__to_acpi_data_node_fwnode, \
437 struct acpi_data_node, fwnode) : \
441 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
443 return !IS_ERR_OR_NULL(fwnode) &&
444 fwnode->ops == &acpi_static_fwnode_ops;
447 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
450 return is_acpi_data_node(fwnode) ?
451 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
454 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
456 return &adev->fwnode;
459 static inline void *acpi_driver_data(struct acpi_device *d)
461 return d->driver_data;
464 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
465 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
467 static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev)
469 if (adev->dev.parent)
470 return to_acpi_device(adev->dev.parent);
475 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
477 *((u32 *)&adev->status) = sta;
480 static inline void acpi_set_hp_context(struct acpi_device *adev,
481 struct acpi_hotplug_context *hp)
487 void acpi_initialize_hp_context(struct acpi_device *adev,
488 struct acpi_hotplug_context *hp,
489 int (*notify)(struct acpi_device *, u32),
490 void (*uevent)(struct acpi_device *, u32));
492 /* acpi_device.dev.bus == &acpi_bus_type */
493 extern struct bus_type acpi_bus_type;
495 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
496 int acpi_dev_for_each_child(struct acpi_device *adev,
497 int (*fn)(struct acpi_device *, void *), void *data);
498 int acpi_dev_for_each_child_reverse(struct acpi_device *adev,
499 int (*fn)(struct acpi_device *, void *),
507 struct acpi_bus_event {
508 struct list_head node;
509 acpi_device_class device_class;
515 extern struct kobject *acpi_kobj;
516 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
517 void acpi_bus_private_data_handler(acpi_handle, void *);
518 int acpi_bus_get_private_data(acpi_handle, void **);
519 int acpi_bus_attach_private_data(acpi_handle, void *);
520 void acpi_bus_detach_private_data(acpi_handle);
521 int acpi_dev_install_notify_handler(struct acpi_device *adev,
523 acpi_notify_handler handler, void *context);
524 void acpi_dev_remove_notify_handler(struct acpi_device *adev,
526 acpi_notify_handler handler);
527 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
528 extern int register_acpi_notifier(struct notifier_block *);
529 extern int unregister_acpi_notifier(struct notifier_block *);
535 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
536 unsigned long long *sta);
537 int acpi_bus_get_status(struct acpi_device *device);
539 int acpi_bus_set_power(acpi_handle handle, int state);
540 const char *acpi_power_state_string(int state);
541 int acpi_device_set_power(struct acpi_device *device, int state);
542 int acpi_bus_init_power(struct acpi_device *device);
543 int acpi_device_fix_up_power(struct acpi_device *device);
544 void acpi_device_fix_up_power_extended(struct acpi_device *adev);
545 void acpi_device_fix_up_power_children(struct acpi_device *adev);
546 int acpi_bus_update_power(acpi_handle handle, int *state_p);
547 int acpi_device_update_power(struct acpi_device *device, int *state_p);
548 bool acpi_bus_power_manageable(acpi_handle handle);
549 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev);
550 u8 acpi_dev_power_state_for_wake(struct acpi_device *adev);
551 int acpi_device_power_add_dependent(struct acpi_device *adev,
553 void acpi_device_power_remove_dependent(struct acpi_device *adev,
557 bool acpi_bus_can_wakeup(acpi_handle handle);
559 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
562 void acpi_scan_lock_acquire(void);
563 void acpi_scan_lock_release(void);
564 void acpi_lock_hp_context(void);
565 void acpi_unlock_hp_context(void);
566 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
567 int acpi_bus_register_driver(struct acpi_driver *driver);
568 void acpi_bus_unregister_driver(struct acpi_driver *driver);
569 int acpi_bus_scan(acpi_handle handle);
570 void acpi_bus_trim(struct acpi_device *start);
571 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
572 int acpi_match_device_ids(struct acpi_device *device,
573 const struct acpi_device_id *ids);
574 void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
575 char *modalias, size_t len);
577 static inline bool acpi_device_enumerated(struct acpi_device *adev)
579 return adev && adev->flags.initialized && adev->flags.visited;
583 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
584 * @__acpi_driver: acpi_driver struct
586 * Helper macro for ACPI drivers which do not do anything special in module
587 * init/exit. This eliminates a lot of boilerplate. Each module may only
588 * use this macro once, and calling it replaces module_init() and module_exit()
590 #define module_acpi_driver(__acpi_driver) \
591 module_driver(__acpi_driver, acpi_bus_register_driver, \
592 acpi_bus_unregister_driver)
595 * Bind physical devices with ACPI devices
597 struct acpi_bus_type {
598 struct list_head list;
600 bool (*match)(struct device *dev);
601 struct acpi_device * (*find_companion)(struct device *);
602 void (*setup)(struct device *);
604 int register_acpi_bus_type(struct acpi_bus_type *);
605 int unregister_acpi_bus_type(struct acpi_bus_type *);
606 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
607 int acpi_unbind_one(struct device *dev);
609 enum acpi_bridge_type {
610 ACPI_BRIDGE_TYPE_PCIE = 1,
611 ACPI_BRIDGE_TYPE_CXL,
614 struct acpi_pci_root {
615 struct acpi_device * device;
619 struct resource secondary; /* downstream bus range */
621 u32 osc_support_set; /* _OSC state of support bits */
622 u32 osc_control_set; /* _OSC state of control bits */
623 u32 osc_ext_support_set; /* _OSC state of extended support bits */
624 u32 osc_ext_control_set; /* _OSC state of extended control bits */
625 phys_addr_t mcfg_addr;
630 bool acpi_dma_supported(const struct acpi_device *adev);
631 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
632 int acpi_iommu_fwspec_init(struct device *dev, u32 id,
633 struct fwnode_handle *fwnode,
634 const struct iommu_ops *ops);
635 int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map);
636 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
637 const u32 *input_id);
638 static inline int acpi_dma_configure(struct device *dev,
639 enum dev_dma_attr attr)
641 return acpi_dma_configure_id(dev, attr, NULL);
643 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
644 u64 address, bool check_children);
645 struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev,
646 acpi_bus_address adr);
647 int acpi_is_root_bridge(acpi_handle);
648 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
650 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
651 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
654 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status);
655 bool acpi_quirk_skip_acpi_ac_and_battery(void);
656 int acpi_install_cmos_rtc_space_handler(acpi_handle handle);
657 void acpi_remove_cmos_rtc_space_handler(acpi_handle handle);
659 static inline bool acpi_device_override_status(struct acpi_device *adev,
660 unsigned long long *status)
664 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void)
668 static inline int acpi_install_cmos_rtc_space_handler(acpi_handle handle)
672 static inline void acpi_remove_cmos_rtc_space_handler(acpi_handle handle)
677 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
678 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
679 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
680 bool acpi_quirk_skip_gpio_event_handlers(void);
682 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
687 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
692 static inline bool acpi_quirk_skip_gpio_event_handlers(void)
699 void acpi_pm_wakeup_event(struct device *dev);
700 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
701 void (*func)(struct acpi_device_wakeup_context *context));
702 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
703 bool acpi_pm_device_can_wakeup(struct device *dev);
704 int acpi_pm_device_sleep_state(struct device *, int *, int);
705 int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
707 static inline void acpi_pm_wakeup_event(struct device *dev)
710 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
712 void (*func)(struct acpi_device_wakeup_context *context))
716 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
720 static inline bool acpi_pm_device_can_wakeup(struct device *dev)
724 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
729 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
732 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
738 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
739 bool acpi_sleep_state_supported(u8 sleep_state);
741 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
744 #ifdef CONFIG_ACPI_SLEEP
745 u32 acpi_target_system_state(void);
747 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
750 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
752 return adev->flags.power_manageable;
755 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
757 return adev->wakeup.flags.valid;
760 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
762 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
763 ((acpi_gbl_FADT.header.revision < 6) &&
764 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
767 bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
768 int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer);
770 static inline bool acpi_str_uid_match(struct acpi_device *adev, const char *uid2)
772 const char *uid1 = acpi_device_uid(adev);
774 return uid1 && uid2 && !strcmp(uid1, uid2);
777 static inline bool acpi_int_uid_match(struct acpi_device *adev, u64 uid2)
781 return !acpi_dev_uid_to_integer(adev, &uid1) && uid1 == uid2;
784 #define TYPE_ENTRY(type, x) \
788 #define ACPI_STR_TYPES(match) \
789 TYPE_ENTRY(unsigned char *, match), \
790 TYPE_ENTRY(signed char *, match), \
791 TYPE_ENTRY(char *, match), \
792 TYPE_ENTRY(void *, match)
795 * acpi_dev_uid_match - Match device by supplied UID
796 * @adev: ACPI device to match.
797 * @uid2: Unique ID of the device.
799 * Matches UID in @adev with given @uid2.
801 * Returns: %true if matches, %false otherwise.
803 #define acpi_dev_uid_match(adev, uid2) \
805 /* Treat @uid2 as a string for acpi string types */ \
806 ACPI_STR_TYPES(acpi_str_uid_match), \
807 /* Treat as an integer otherwise */ \
808 default: acpi_int_uid_match)(adev, uid2)
810 void acpi_dev_clear_dependencies(struct acpi_device *supplier);
811 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device);
812 struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier,
813 struct acpi_device *start);
816 * for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a
818 * @supplier: Pointer to the supplier's ACPI device
819 * @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL
821 #define for_each_acpi_consumer_dev(supplier, consumer) \
822 for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \
824 consumer = acpi_dev_get_next_consumer_dev(supplier, consumer))
827 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
829 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
832 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
833 * @adev: pointer to the matching ACPI device, NULL at the end of the loop
834 * @hid: Hardware ID of the device.
835 * @uid: Unique ID of the device, pass NULL to not check _UID
836 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
838 * The caller is responsible for invoking acpi_dev_put() on the returned device.
840 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \
841 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \
843 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
845 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
847 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
850 static inline void acpi_dev_put(struct acpi_device *adev)
853 put_device(&adev->dev);
856 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle);
857 struct acpi_device *acpi_get_acpi_dev(acpi_handle handle);
859 static inline void acpi_put_acpi_dev(struct acpi_device *adev)
863 #else /* CONFIG_ACPI */
865 static inline int register_acpi_bus_type(void *bus) { return 0; }
866 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
868 #endif /* CONFIG_ACPI */
870 #endif /*__ACPI_BUS_H__*/