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 <[email protected]>
6 * Copyright (C) 2001, 2002 Paul Diefenbaugh <[email protected]>
7 */
8
9 #ifndef __ACPI_BUS_H__
10 #define __ACPI_BUS_H__
11
12 #include <linux/completion.h>
13 #include <linux/container_of.h>
14 #include <linux/device.h>
15 #include <linux/kobject.h>
16 #include <linux/mutex.h>
17 #include <linux/property.h>
18 #include <linux/types.h>
19
20 struct acpi_handle_list {
21 u32 count;
22 acpi_handle *handles;
23 };
24
25 /* acpi_utils.h */
26 acpi_status
27 acpi_extract_package(union acpi_object *package,
28 struct acpi_buffer *format, struct acpi_buffer *buffer);
29 acpi_status
30 acpi_evaluate_integer(acpi_handle handle,
31 acpi_string pathname,
32 struct acpi_object_list *arguments, unsigned long long *data);
33 bool acpi_evaluate_reference(acpi_handle handle, acpi_string pathname,
34 struct acpi_object_list *arguments,
35 struct acpi_handle_list *list);
36 bool acpi_handle_list_equal(struct acpi_handle_list *list1,
37 struct acpi_handle_list *list2);
38 void acpi_handle_list_replace(struct acpi_handle_list *dst,
39 struct acpi_handle_list *src);
40 void acpi_handle_list_free(struct acpi_handle_list *list);
41 bool acpi_device_dep(acpi_handle target, acpi_handle match);
42 acpi_status
43 acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
44 struct acpi_buffer *status_buf);
45
46 bool acpi_has_method(acpi_handle handle, char *name);
47 acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
48 u64 arg);
49 acpi_status acpi_evaluate_ej0(acpi_handle handle);
50 acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
51 acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function);
52 bool acpi_ata_match(acpi_handle handle);
53 bool acpi_bay_match(acpi_handle handle);
54 bool acpi_dock_match(acpi_handle handle);
55
56 bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs);
57 union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
58 u64 rev, u64 func, union acpi_object *argv4);
59 #ifdef CONFIG_ACPI
60 bool
61 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
62
63 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)64 acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev,
65 u64 func, union acpi_object *argv4,
66 acpi_object_type type)
67 {
68 union acpi_object *obj;
69
70 obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4);
71 if (obj && obj->type != type) {
72 ACPI_FREE(obj);
73 obj = NULL;
74 }
75
76 return obj;
77 }
78 #endif
79
80 #define ACPI_INIT_DSM_ARGV4(cnt, eles) \
81 { \
82 .package.type = ACPI_TYPE_PACKAGE, \
83 .package.count = (cnt), \
84 .package.elements = (eles) \
85 }
86
87 bool acpi_dev_found(const char *hid);
88 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
89 bool acpi_reduced_hardware(void);
90
91 #ifdef CONFIG_ACPI
92
93 struct proc_dir_entry;
94
95 #define ACPI_BUS_FILE_ROOT "acpi"
96 extern struct proc_dir_entry *acpi_root_dir;
97
98 enum acpi_bus_device_type {
99 ACPI_BUS_TYPE_DEVICE = 0,
100 ACPI_BUS_TYPE_POWER,
101 ACPI_BUS_TYPE_PROCESSOR,
102 ACPI_BUS_TYPE_THERMAL,
103 ACPI_BUS_TYPE_POWER_BUTTON,
104 ACPI_BUS_TYPE_SLEEP_BUTTON,
105 ACPI_BUS_TYPE_ECDT_EC,
106 ACPI_BUS_DEVICE_TYPE_COUNT
107 };
108
109 struct acpi_driver;
110 struct acpi_device;
111
112 /*
113 * ACPI Scan Handler
114 * -----------------
115 */
116
117 struct acpi_hotplug_profile {
118 struct kobject kobj;
119 int (*scan_dependent)(struct acpi_device *adev);
120 void (*notify_online)(struct acpi_device *adev);
121 bool enabled:1;
122 bool demand_offline:1;
123 };
124
to_acpi_hotplug_profile(struct kobject * kobj)125 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
126 struct kobject *kobj)
127 {
128 return container_of(kobj, struct acpi_hotplug_profile, kobj);
129 }
130
131 struct acpi_scan_handler {
132 struct list_head list_node;
133 const struct acpi_device_id *ids;
134 bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
135 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
136 void (*detach)(struct acpi_device *dev);
137 void (*post_eject)(struct acpi_device *dev);
138 void (*bind)(struct device *phys_dev);
139 void (*unbind)(struct device *phys_dev);
140 struct acpi_hotplug_profile hotplug;
141 };
142
143 /*
144 * ACPI Hotplug Context
145 * --------------------
146 */
147
148 typedef int (*acpi_hp_notify) (struct acpi_device *, u32);
149 typedef void (*acpi_hp_uevent) (struct acpi_device *, u32);
150 typedef void (*acpi_hp_fixup) (struct acpi_device *);
151
152 struct acpi_hotplug_context {
153 struct acpi_device *self;
154 acpi_hp_notify notify;
155 acpi_hp_uevent uevent;
156 acpi_hp_fixup fixup;
157 };
158
159 /*
160 * ACPI Driver
161 * -----------
162 */
163
164 typedef int (*acpi_op_add) (struct acpi_device * device);
165 typedef void (*acpi_op_remove) (struct acpi_device *device);
166 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
167
168 struct acpi_device_ops {
169 acpi_op_add add;
170 acpi_op_remove remove;
171 acpi_op_notify notify;
172 };
173
174 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
175
176 struct acpi_driver {
177 char name[80];
178 char class[80];
179 const struct acpi_device_id *ids; /* Supported Hardware IDs */
180 unsigned int flags;
181 struct acpi_device_ops ops;
182 struct device_driver drv;
183 };
184
185 /*
186 * ACPI Device
187 * -----------
188 */
189
190 /* Status (_STA) */
191
192 struct acpi_device_status {
193 u32 present:1;
194 u32 enabled:1;
195 u32 show_in_ui:1;
196 u32 functional:1;
197 u32 battery_present:1;
198 u32 reserved:27;
199 };
200
201 /* Flags */
202
203 struct acpi_device_flags {
204 u32 dynamic_status:1;
205 u32 removable:1;
206 u32 ejectable:1;
207 u32 power_manageable:1;
208 u32 match_driver:1;
209 u32 initialized:1;
210 u32 visited:1;
211 u32 hotplug_notify:1;
212 u32 is_dock_station:1;
213 u32 of_compatible_ok:1;
214 u32 coherent_dma:1;
215 u32 cca_seen:1;
216 u32 enumeration_by_parent:1;
217 u32 honor_deps:1;
218 u32 reserved:18;
219 };
220
221 /* File System */
222
223 struct acpi_device_dir {
224 struct proc_dir_entry *entry;
225 };
226
227 #define acpi_device_dir(d) ((d)->dir.entry)
228
229 /* Plug and Play */
230
231 #define MAX_ACPI_DEVICE_NAME_LEN 40
232 #define MAX_ACPI_CLASS_NAME_LEN 20
233 typedef char acpi_bus_id[8];
234 typedef u64 acpi_bus_address;
235 typedef char acpi_device_name[MAX_ACPI_DEVICE_NAME_LEN];
236 typedef char acpi_device_class[MAX_ACPI_CLASS_NAME_LEN];
237
238 struct acpi_hardware_id {
239 struct list_head list;
240 const char *id;
241 };
242
243 struct acpi_pnp_type {
244 u32 hardware_id:1;
245 u32 bus_address:1;
246 u32 platform_id:1;
247 u32 backlight:1;
248 u32 reserved:28;
249 };
250
251 struct acpi_device_pnp {
252 acpi_bus_id bus_id; /* Object name */
253 int instance_no; /* Instance number of this object */
254 struct acpi_pnp_type type; /* ID type */
255 acpi_bus_address bus_address; /* _ADR */
256 char *unique_id; /* _UID */
257 struct list_head ids; /* _HID and _CIDs */
258 acpi_device_name device_name; /* Driver-determined */
259 acpi_device_class device_class; /* " */
260 };
261
262 #define acpi_device_bid(d) ((d)->pnp.bus_id)
263 #define acpi_device_adr(d) ((d)->pnp.bus_address)
264 const char *acpi_device_hid(struct acpi_device *device);
265 #define acpi_device_uid(d) ((d)->pnp.unique_id)
266 #define acpi_device_name(d) ((d)->pnp.device_name)
267 #define acpi_device_class(d) ((d)->pnp.device_class)
268
269 /* Power Management */
270
271 struct acpi_device_power_flags {
272 u32 explicit_get:1; /* _PSC present? */
273 u32 power_resources:1; /* Power resources */
274 u32 inrush_current:1; /* Serialize Dx->D0 */
275 u32 power_removed:1; /* Optimize Dx->D0 */
276 u32 ignore_parent:1; /* Power is independent of parent power state */
277 u32 dsw_present:1; /* _DSW present? */
278 u32 reserved:26;
279 };
280
281 struct acpi_device_power_state {
282 struct list_head resources; /* Power resources referenced */
283 struct {
284 u8 valid:1;
285 u8 explicit_set:1; /* _PSx present? */
286 u8 reserved:6;
287 } flags;
288 int power; /* % Power (compared to D0) */
289 int latency; /* Dx->D0 time (microseconds) */
290 };
291
292 struct acpi_device_power {
293 int state; /* Current state */
294 struct acpi_device_power_flags flags;
295 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
296 u8 state_for_enumeration; /* Deepest power state for enumeration */
297 };
298
299 struct acpi_dep_data {
300 struct list_head node;
301 acpi_handle supplier;
302 acpi_handle consumer;
303 bool honor_dep;
304 bool met;
305 bool free_when_met;
306 };
307
308 /* Performance Management */
309
310 struct acpi_device_perf_flags {
311 u8 reserved:8;
312 };
313
314 struct acpi_device_perf_state {
315 struct {
316 u8 valid:1;
317 u8 reserved:7;
318 } flags;
319 u8 power; /* % Power (compared to P0) */
320 u8 performance; /* % Performance ( " ) */
321 int latency; /* Px->P0 time (microseconds) */
322 };
323
324 struct acpi_device_perf {
325 int state;
326 struct acpi_device_perf_flags flags;
327 int state_count;
328 struct acpi_device_perf_state *states;
329 };
330
331 /* Wakeup Management */
332 struct acpi_device_wakeup_flags {
333 u8 valid:1; /* Can successfully enable wakeup? */
334 u8 notifier_present:1; /* Wake-up notify handler has been installed */
335 };
336
337 struct acpi_device_wakeup_context {
338 void (*func)(struct acpi_device_wakeup_context *context);
339 struct device *dev;
340 };
341
342 struct acpi_device_wakeup {
343 acpi_handle gpe_device;
344 u64 gpe_number;
345 u64 sleep_state;
346 struct list_head resources;
347 struct acpi_device_wakeup_flags flags;
348 struct acpi_device_wakeup_context context;
349 struct wakeup_source *ws;
350 int prepare_count;
351 int enable_count;
352 };
353
354 struct acpi_device_physical_node {
355 struct list_head node;
356 struct device *dev;
357 unsigned int node_id;
358 bool put_online:1;
359 };
360
361 struct acpi_device_properties {
362 struct list_head list;
363 const guid_t *guid;
364 union acpi_object *properties;
365 void **bufs;
366 };
367
368 /* ACPI Device Specific Data (_DSD) */
369 struct acpi_device_data {
370 const union acpi_object *pointer;
371 struct list_head properties;
372 const union acpi_object *of_compatible;
373 struct list_head subnodes;
374 };
375
376 struct acpi_gpio_mapping;
377
378 #define ACPI_DEVICE_SWNODE_ROOT 0
379
380 /*
381 * The maximum expected number of CSI-2 data lanes.
382 *
383 * This number is not expected to ever have to be equal to or greater than the
384 * number of bits in an unsigned long variable, but if it needs to be increased
385 * above that limit, code will need to be adjusted accordingly.
386 */
387 #define ACPI_DEVICE_CSI2_DATA_LANES 8
388
389 #define ACPI_DEVICE_SWNODE_PORT_NAME_LENGTH 8
390
391 enum acpi_device_swnode_dev_props {
392 ACPI_DEVICE_SWNODE_DEV_ROTATION,
393 ACPI_DEVICE_SWNODE_DEV_CLOCK_FREQUENCY,
394 ACPI_DEVICE_SWNODE_DEV_LED_MAX_MICROAMP,
395 ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_MICROAMP,
396 ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_TIMEOUT_US,
397 ACPI_DEVICE_SWNODE_DEV_NUM_OF,
398 ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES
399 };
400
401 enum acpi_device_swnode_port_props {
402 ACPI_DEVICE_SWNODE_PORT_REG,
403 ACPI_DEVICE_SWNODE_PORT_NUM_OF,
404 ACPI_DEVICE_SWNODE_PORT_NUM_ENTRIES
405 };
406
407 enum acpi_device_swnode_ep_props {
408 ACPI_DEVICE_SWNODE_EP_REMOTE_EP,
409 ACPI_DEVICE_SWNODE_EP_BUS_TYPE,
410 ACPI_DEVICE_SWNODE_EP_REG,
411 ACPI_DEVICE_SWNODE_EP_CLOCK_LANES,
412 ACPI_DEVICE_SWNODE_EP_DATA_LANES,
413 ACPI_DEVICE_SWNODE_EP_LANE_POLARITIES,
414 /* TX only */
415 ACPI_DEVICE_SWNODE_EP_LINK_FREQUENCIES,
416 ACPI_DEVICE_SWNODE_EP_NUM_OF,
417 ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES
418 };
419
420 /*
421 * Each device has a root software node plus two times as many nodes as the
422 * number of CSI-2 ports.
423 */
424 #define ACPI_DEVICE_SWNODE_PORT(port) (2 * (port) + 1)
425 #define ACPI_DEVICE_SWNODE_EP(endpoint) \
426 (ACPI_DEVICE_SWNODE_PORT(endpoint) + 1)
427
428 /**
429 * struct acpi_device_software_node_port - MIPI DisCo for Imaging CSI-2 port
430 * @port_name: Port name.
431 * @data_lanes: "data-lanes" property values.
432 * @lane_polarities: "lane-polarities" property values.
433 * @link_frequencies: "link_frequencies" property values.
434 * @port_nr: Port number.
435 * @crs_crs2_local: _CRS CSI2 record present (i.e. this is a transmitter one).
436 * @port_props: Port properties.
437 * @ep_props: Endpoint properties.
438 * @remote_ep: Reference to the remote endpoint.
439 */
440 struct acpi_device_software_node_port {
441 char port_name[ACPI_DEVICE_SWNODE_PORT_NAME_LENGTH + 1];
442 u32 data_lanes[ACPI_DEVICE_CSI2_DATA_LANES];
443 u32 lane_polarities[ACPI_DEVICE_CSI2_DATA_LANES + 1 /* clock lane */];
444 u64 link_frequencies[ACPI_DEVICE_CSI2_DATA_LANES];
445 unsigned int port_nr;
446 bool crs_csi2_local;
447
448 struct property_entry port_props[ACPI_DEVICE_SWNODE_PORT_NUM_ENTRIES];
449 struct property_entry ep_props[ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES];
450
451 struct software_node_ref_args remote_ep[1];
452 };
453
454 /**
455 * struct acpi_device_software_nodes - Software nodes for an ACPI device
456 * @dev_props: Device properties.
457 * @nodes: Software nodes for root as well as ports and endpoints.
458 * @nodeprts: Array of software node pointers, for (un)registering them.
459 * @ports: Information related to each port and endpoint within a port.
460 * @num_ports: The number of ports.
461 */
462 struct acpi_device_software_nodes {
463 struct property_entry dev_props[ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES];
464 struct software_node *nodes;
465 const struct software_node **nodeptrs;
466 struct acpi_device_software_node_port *ports;
467 unsigned int num_ports;
468 };
469
470 /* Device */
471 struct acpi_device {
472 u32 pld_crc;
473 int device_type;
474 acpi_handle handle; /* no handle for fixed hardware */
475 struct fwnode_handle fwnode;
476 struct list_head wakeup_list;
477 struct list_head del_list;
478 struct acpi_device_status status;
479 struct acpi_device_flags flags;
480 struct acpi_device_pnp pnp;
481 struct acpi_device_power power;
482 struct acpi_device_wakeup wakeup;
483 struct acpi_device_perf performance;
484 struct acpi_device_dir dir;
485 struct acpi_device_data data;
486 struct acpi_scan_handler *handler;
487 struct acpi_hotplug_context *hp;
488 struct acpi_device_software_nodes *swnodes;
489 const struct acpi_gpio_mapping *driver_gpios;
490 void *driver_data;
491 struct device dev;
492 unsigned int physical_node_count;
493 unsigned int dep_unmet;
494 struct list_head physical_node_list;
495 struct mutex physical_node_lock;
496 void (*remove)(struct acpi_device *);
497 };
498
499 /* Non-device subnode */
500 struct acpi_data_node {
501 struct list_head sibling;
502 const char *name;
503 acpi_handle handle;
504 struct fwnode_handle fwnode;
505 struct fwnode_handle *parent;
506 struct acpi_device_data data;
507 struct kobject kobj;
508 struct completion kobj_done;
509 };
510
511 extern const struct fwnode_operations acpi_device_fwnode_ops;
512 extern const struct fwnode_operations acpi_data_fwnode_ops;
513 extern const struct fwnode_operations acpi_static_fwnode_ops;
514
515 bool is_acpi_device_node(const struct fwnode_handle *fwnode);
516 bool is_acpi_data_node(const struct fwnode_handle *fwnode);
517
is_acpi_node(const struct fwnode_handle * fwnode)518 static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
519 {
520 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
521 }
522
523 #define to_acpi_device_node(__fwnode) \
524 ({ \
525 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
526 \
527 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \
528 container_of(__to_acpi_device_node_fwnode, \
529 struct acpi_device, fwnode) : \
530 NULL; \
531 })
532
533 #define to_acpi_data_node(__fwnode) \
534 ({ \
535 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
536 \
537 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \
538 container_of(__to_acpi_data_node_fwnode, \
539 struct acpi_data_node, fwnode) : \
540 NULL; \
541 })
542
is_acpi_static_node(const struct fwnode_handle * fwnode)543 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
544 {
545 return !IS_ERR_OR_NULL(fwnode) &&
546 fwnode->ops == &acpi_static_fwnode_ops;
547 }
548
acpi_data_node_match(const struct fwnode_handle * fwnode,const char * name)549 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
550 const char *name)
551 {
552 return is_acpi_data_node(fwnode) ?
553 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
554 }
555
acpi_fwnode_handle(struct acpi_device * adev)556 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
557 {
558 return &adev->fwnode;
559 }
560
acpi_driver_data(struct acpi_device * d)561 static inline void *acpi_driver_data(struct acpi_device *d)
562 {
563 return d->driver_data;
564 }
565
566 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
567 #define to_acpi_driver(d) container_of_const(d, struct acpi_driver, drv)
568
acpi_dev_parent(struct acpi_device * adev)569 static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev)
570 {
571 if (adev->dev.parent)
572 return to_acpi_device(adev->dev.parent);
573
574 return NULL;
575 }
576
acpi_set_device_status(struct acpi_device * adev,u32 sta)577 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
578 {
579 *((u32 *)&adev->status) = sta;
580 }
581
acpi_set_hp_context(struct acpi_device * adev,struct acpi_hotplug_context * hp)582 static inline void acpi_set_hp_context(struct acpi_device *adev,
583 struct acpi_hotplug_context *hp)
584 {
585 hp->self = adev;
586 adev->hp = hp;
587 }
588
589 void acpi_initialize_hp_context(struct acpi_device *adev,
590 struct acpi_hotplug_context *hp,
591 acpi_hp_notify notify, acpi_hp_uevent uevent);
592
593 /* acpi_device.dev.bus == &acpi_bus_type */
594 extern const struct bus_type acpi_bus_type;
595
596 int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
597 int acpi_dev_for_each_child(struct acpi_device *adev,
598 int (*fn)(struct acpi_device *, void *), void *data);
599 int acpi_dev_for_each_child_reverse(struct acpi_device *adev,
600 int (*fn)(struct acpi_device *, void *),
601 void *data);
602
603 /*
604 * Events
605 * ------
606 */
607
608 struct acpi_bus_event {
609 struct list_head node;
610 acpi_device_class device_class;
611 acpi_bus_id bus_id;
612 u32 type;
613 u32 data;
614 };
615
616 extern struct kobject *acpi_kobj;
617 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
618 void acpi_bus_private_data_handler(acpi_handle, void *);
619 int acpi_bus_get_private_data(acpi_handle, void **);
620 int acpi_bus_attach_private_data(acpi_handle, void *);
621 void acpi_bus_detach_private_data(acpi_handle);
622 int acpi_dev_install_notify_handler(struct acpi_device *adev,
623 u32 handler_type,
624 acpi_notify_handler handler, void *context);
625 void acpi_dev_remove_notify_handler(struct acpi_device *adev,
626 u32 handler_type,
627 acpi_notify_handler handler);
628 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
629 extern int register_acpi_notifier(struct notifier_block *);
630 extern int unregister_acpi_notifier(struct notifier_block *);
631
632 /*
633 * External Functions
634 */
635
636 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
637 unsigned long long *sta);
638 int acpi_bus_get_status(struct acpi_device *device);
639
640 int acpi_bus_set_power(acpi_handle handle, int state);
641 const char *acpi_power_state_string(int state);
642 int acpi_device_set_power(struct acpi_device *device, int state);
643 int acpi_bus_init_power(struct acpi_device *device);
644 int acpi_device_fix_up_power(struct acpi_device *device);
645 void acpi_device_fix_up_power_extended(struct acpi_device *adev);
646 void acpi_device_fix_up_power_children(struct acpi_device *adev);
647 int acpi_bus_update_power(acpi_handle handle, int *state_p);
648 int acpi_device_update_power(struct acpi_device *device, int *state_p);
649 bool acpi_bus_power_manageable(acpi_handle handle);
650 void acpi_dev_power_up_children_with_adr(struct acpi_device *adev);
651 u8 acpi_dev_power_state_for_wake(struct acpi_device *adev);
652 int acpi_device_power_add_dependent(struct acpi_device *adev,
653 struct device *dev);
654 void acpi_device_power_remove_dependent(struct acpi_device *adev,
655 struct device *dev);
656
657 #ifdef CONFIG_PM
658 bool acpi_bus_can_wakeup(acpi_handle handle);
659 #else
acpi_bus_can_wakeup(acpi_handle handle)660 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
661 #endif
662
663 void acpi_scan_lock_acquire(void);
664 void acpi_scan_lock_release(void);
665 void acpi_lock_hp_context(void);
666 void acpi_unlock_hp_context(void);
667 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
668 /*
669 * use a macro to avoid include chaining to get THIS_MODULE
670 */
671 #define acpi_bus_register_driver(drv) \
672 __acpi_bus_register_driver(drv, THIS_MODULE)
673 int __acpi_bus_register_driver(struct acpi_driver *driver, struct module *owner);
674 void acpi_bus_unregister_driver(struct acpi_driver *driver);
675 int acpi_bus_scan(acpi_handle handle);
676 void acpi_bus_trim(struct acpi_device *start);
677 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
678 int acpi_match_device_ids(struct acpi_device *device,
679 const struct acpi_device_id *ids);
680 void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
681 char *modalias, size_t len);
682
acpi_device_enumerated(struct acpi_device * adev)683 static inline bool acpi_device_enumerated(struct acpi_device *adev)
684 {
685 return adev && adev->flags.initialized && adev->flags.visited;
686 }
687
688 /**
689 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
690 * @__acpi_driver: acpi_driver struct
691 *
692 * Helper macro for ACPI drivers which do not do anything special in module
693 * init/exit. This eliminates a lot of boilerplate. Each module may only
694 * use this macro once, and calling it replaces module_init() and module_exit()
695 */
696 #define module_acpi_driver(__acpi_driver) \
697 module_driver(__acpi_driver, acpi_bus_register_driver, \
698 acpi_bus_unregister_driver)
699
700 /*
701 * Bind physical devices with ACPI devices
702 */
703 struct acpi_bus_type {
704 struct list_head list;
705 const char *name;
706 bool (*match)(struct device *dev);
707 struct acpi_device * (*find_companion)(struct device *);
708 void (*setup)(struct device *);
709 };
710 int register_acpi_bus_type(struct acpi_bus_type *);
711 int unregister_acpi_bus_type(struct acpi_bus_type *);
712 int acpi_bind_one(struct device *dev, struct acpi_device *adev);
713 int acpi_unbind_one(struct device *dev);
714
715 enum acpi_bridge_type {
716 ACPI_BRIDGE_TYPE_PCIE = 1,
717 ACPI_BRIDGE_TYPE_CXL,
718 };
719
720 struct acpi_pci_root {
721 struct acpi_device * device;
722 struct pci_bus *bus;
723 u16 segment;
724 int bridge_type;
725 struct resource secondary; /* downstream bus range */
726
727 u32 osc_support_set; /* _OSC state of support bits */
728 u32 osc_control_set; /* _OSC state of control bits */
729 u32 osc_ext_support_set; /* _OSC state of extended support bits */
730 u32 osc_ext_control_set; /* _OSC state of extended control bits */
731 phys_addr_t mcfg_addr;
732 };
733
734 /* helper */
735
736 struct iommu_ops;
737
738 bool acpi_dma_supported(const struct acpi_device *adev);
739 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
740 int acpi_iommu_fwspec_init(struct device *dev, u32 id,
741 struct fwnode_handle *fwnode);
742 int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map);
743 int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
744 const u32 *input_id);
acpi_dma_configure(struct device * dev,enum dev_dma_attr attr)745 static inline int acpi_dma_configure(struct device *dev,
746 enum dev_dma_attr attr)
747 {
748 return acpi_dma_configure_id(dev, attr, NULL);
749 }
750 struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
751 u64 address, bool check_children);
752 struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev,
753 acpi_bus_address adr);
754 int acpi_is_root_bridge(acpi_handle);
755 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
756
757 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
758 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
759
760 #ifdef CONFIG_X86
761 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status);
762 bool acpi_quirk_skip_acpi_ac_and_battery(void);
763 int acpi_install_cmos_rtc_space_handler(acpi_handle handle);
764 void acpi_remove_cmos_rtc_space_handler(acpi_handle handle);
765 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
766 #else
acpi_device_override_status(struct acpi_device * adev,unsigned long long * status)767 static inline bool acpi_device_override_status(struct acpi_device *adev,
768 unsigned long long *status)
769 {
770 return false;
771 }
acpi_quirk_skip_acpi_ac_and_battery(void)772 static inline bool acpi_quirk_skip_acpi_ac_and_battery(void)
773 {
774 return false;
775 }
acpi_install_cmos_rtc_space_handler(acpi_handle handle)776 static inline int acpi_install_cmos_rtc_space_handler(acpi_handle handle)
777 {
778 return 1;
779 }
acpi_remove_cmos_rtc_space_handler(acpi_handle handle)780 static inline void acpi_remove_cmos_rtc_space_handler(acpi_handle handle)
781 {
782 }
783 static inline int
acpi_quirk_skip_serdev_enumeration(struct device * controller_parent,bool * skip)784 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
785 {
786 *skip = false;
787 return 0;
788 }
789 #endif
790
791 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
792 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
793 bool acpi_quirk_skip_gpio_event_handlers(void);
794 #else
acpi_quirk_skip_i2c_client_enumeration(struct acpi_device * adev)795 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
796 {
797 return false;
798 }
acpi_quirk_skip_gpio_event_handlers(void)799 static inline bool acpi_quirk_skip_gpio_event_handlers(void)
800 {
801 return false;
802 }
803 #endif
804
805 #ifdef CONFIG_PM
806 void acpi_pm_wakeup_event(struct device *dev);
807 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
808 void (*func)(struct acpi_device_wakeup_context *context));
809 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
810 bool acpi_pm_device_can_wakeup(struct device *dev);
811 int acpi_pm_device_sleep_state(struct device *, int *, int);
812 int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
813 #else
acpi_pm_wakeup_event(struct device * dev)814 static inline void acpi_pm_wakeup_event(struct device *dev)
815 {
816 }
acpi_add_pm_notifier(struct acpi_device * adev,struct device * dev,void (* func)(struct acpi_device_wakeup_context * context))817 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
818 struct device *dev,
819 void (*func)(struct acpi_device_wakeup_context *context))
820 {
821 return AE_SUPPORT;
822 }
acpi_remove_pm_notifier(struct acpi_device * adev)823 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
824 {
825 return AE_SUPPORT;
826 }
acpi_pm_device_can_wakeup(struct device * dev)827 static inline bool acpi_pm_device_can_wakeup(struct device *dev)
828 {
829 return false;
830 }
acpi_pm_device_sleep_state(struct device * d,int * p,int m)831 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
832 {
833 if (p)
834 *p = ACPI_STATE_D0;
835
836 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
837 m : ACPI_STATE_D0;
838 }
acpi_pm_set_device_wakeup(struct device * dev,bool enable)839 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
840 {
841 return -ENODEV;
842 }
843 #endif
844
845 #ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
846 bool acpi_sleep_state_supported(u8 sleep_state);
847 #else
acpi_sleep_state_supported(u8 sleep_state)848 static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
849 #endif
850
851 #ifdef CONFIG_ACPI_SLEEP
852 u32 acpi_target_system_state(void);
853 #else
acpi_target_system_state(void)854 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
855 #endif
856
acpi_device_power_manageable(struct acpi_device * adev)857 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
858 {
859 return adev->flags.power_manageable;
860 }
861
acpi_device_can_wakeup(struct acpi_device * adev)862 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
863 {
864 return adev->wakeup.flags.valid;
865 }
866
acpi_device_can_poweroff(struct acpi_device * adev)867 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
868 {
869 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
870 ((acpi_gbl_FADT.header.revision < 6) &&
871 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
872 }
873
874 int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer);
875
acpi_dev_hid_match(struct acpi_device * adev,const char * hid2)876 static inline bool acpi_dev_hid_match(struct acpi_device *adev, const char *hid2)
877 {
878 const char *hid1 = acpi_device_hid(adev);
879
880 return hid1 && hid2 && !strcmp(hid1, hid2);
881 }
882
acpi_str_uid_match(struct acpi_device * adev,const char * uid2)883 static inline bool acpi_str_uid_match(struct acpi_device *adev, const char *uid2)
884 {
885 const char *uid1 = acpi_device_uid(adev);
886
887 return uid1 && uid2 && !strcmp(uid1, uid2);
888 }
889
acpi_int_uid_match(struct acpi_device * adev,u64 uid2)890 static inline bool acpi_int_uid_match(struct acpi_device *adev, u64 uid2)
891 {
892 u64 uid1;
893
894 return !acpi_dev_uid_to_integer(adev, &uid1) && uid1 == uid2;
895 }
896
897 #define TYPE_ENTRY(type, x) \
898 const type: x, \
899 type: x
900
901 #define ACPI_STR_TYPES(match) \
902 TYPE_ENTRY(unsigned char *, match), \
903 TYPE_ENTRY(signed char *, match), \
904 TYPE_ENTRY(char *, match), \
905 TYPE_ENTRY(void *, match)
906
907 /**
908 * acpi_dev_uid_match - Match device by supplied UID
909 * @adev: ACPI device to match.
910 * @uid2: Unique ID of the device.
911 *
912 * Matches UID in @adev with given @uid2.
913 *
914 * Returns: %true if matches, %false otherwise.
915 */
916 #define acpi_dev_uid_match(adev, uid2) \
917 _Generic(uid2, \
918 /* Treat @uid2 as a string for acpi string types */ \
919 ACPI_STR_TYPES(acpi_str_uid_match), \
920 /* Treat as an integer otherwise */ \
921 default: acpi_int_uid_match)(adev, uid2)
922
923 /**
924 * acpi_dev_hid_uid_match - Match device by supplied HID and UID
925 * @adev: ACPI device to match.
926 * @hid2: Hardware ID of the device.
927 * @uid2: Unique ID of the device, pass NULL to not check _UID.
928 *
929 * Matches HID and UID in @adev with given @hid2 and @uid2. Absence of @uid2
930 * will be treated as a match. If user wants to validate @uid2, it should be
931 * done before calling this function.
932 *
933 * Returns: %true if matches or @uid2 is NULL, %false otherwise.
934 */
935 #define acpi_dev_hid_uid_match(adev, hid2, uid2) \
936 (acpi_dev_hid_match(adev, hid2) && \
937 /* Distinguish integer 0 from NULL @uid2 */ \
938 (_Generic(uid2, ACPI_STR_TYPES(!(uid2)), default: 0) || \
939 acpi_dev_uid_match(adev, uid2)))
940
941 void acpi_dev_clear_dependencies(struct acpi_device *supplier);
942 bool acpi_dev_ready_for_enumeration(const struct acpi_device *device);
943 struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier,
944 struct acpi_device *start);
945
946 /**
947 * for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a
948 * given supplier
949 * @supplier: Pointer to the supplier's ACPI device
950 * @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL
951 */
952 #define for_each_acpi_consumer_dev(supplier, consumer) \
953 for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \
954 consumer; \
955 consumer = acpi_dev_get_next_consumer_dev(supplier, consumer))
956
957 struct acpi_device *
958 acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
959 struct acpi_device *
960 acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
961
962 /**
963 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
964 * @adev: pointer to the matching ACPI device, NULL at the end of the loop
965 * @hid: Hardware ID of the device.
966 * @uid: Unique ID of the device, pass NULL to not check _UID
967 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
968 *
969 * The caller is responsible for invoking acpi_dev_put() on the returned device.
970 */
971 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \
972 for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \
973 adev; \
974 adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
975
acpi_dev_get(struct acpi_device * adev)976 static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
977 {
978 return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
979 }
980
acpi_dev_put(struct acpi_device * adev)981 static inline void acpi_dev_put(struct acpi_device *adev)
982 {
983 if (adev)
984 put_device(&adev->dev);
985 }
986
987 struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle);
988 struct acpi_device *acpi_get_acpi_dev(acpi_handle handle);
989
acpi_put_acpi_dev(struct acpi_device * adev)990 static inline void acpi_put_acpi_dev(struct acpi_device *adev)
991 {
992 acpi_dev_put(adev);
993 }
994
995 int acpi_wait_for_acpi_ipmi(void);
996
997 int acpi_scan_add_dep(acpi_handle handle, struct acpi_handle_list *dep_devices);
998 u32 arch_acpi_add_auto_dep(acpi_handle handle);
999 #else /* CONFIG_ACPI */
1000
register_acpi_bus_type(void * bus)1001 static inline int register_acpi_bus_type(void *bus) { return 0; }
unregister_acpi_bus_type(void * bus)1002 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
1003
acpi_wait_for_acpi_ipmi(void)1004 static inline int acpi_wait_for_acpi_ipmi(void) { return 0; }
1005
acpi_device_hid(struct acpi_device * device)1006 static inline const char *acpi_device_hid(struct acpi_device *device)
1007 {
1008 return "";
1009 }
1010
1011 static inline bool
acpi_get_physical_device_location(acpi_handle handle,struct acpi_pld_info ** pld)1012 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld)
1013 {
1014 return false;
1015 }
1016
1017 #define for_each_acpi_consumer_dev(supplier, consumer) \
1018 for (consumer = NULL; false && (supplier);)
1019
1020 #define for_each_acpi_dev_match(adev, hid, uid, hrv) \
1021 for (adev = NULL; false && (hid) && (uid) && (hrv); )
1022
1023 #endif /* CONFIG_ACPI */
1024
1025 #endif /*__ACPI_BUS_H__*/
1026