1006 lines
29 KiB
C
1006 lines
29 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
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*
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* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
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* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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*/
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#ifndef __ACPI_BUS_H__
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#define __ACPI_BUS_H__
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#include <linux/completion.h>
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#include <linux/container_of.h>
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#include <linux/device.h>
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#include <linux/kobject.h>
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#include <linux/mutex.h>
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#include <linux/property.h>
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#include <linux/types.h>
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struct acpi_handle_list {
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u32 count;
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acpi_handle *handles;
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};
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/* acpi_utils.h */
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acpi_status
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acpi_extract_package(union acpi_object *package,
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struct acpi_buffer *format, struct acpi_buffer *buffer);
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acpi_status
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acpi_evaluate_integer(acpi_handle handle,
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acpi_string pathname,
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struct acpi_object_list *arguments, unsigned long long *data);
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bool acpi_evaluate_reference(acpi_handle handle, acpi_string pathname,
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struct acpi_object_list *arguments,
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struct acpi_handle_list *list);
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bool acpi_handle_list_equal(struct acpi_handle_list *list1,
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struct acpi_handle_list *list2);
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void acpi_handle_list_replace(struct acpi_handle_list *dst,
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struct acpi_handle_list *src);
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void acpi_handle_list_free(struct acpi_handle_list *list);
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bool acpi_device_dep(acpi_handle target, acpi_handle match);
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acpi_status
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acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
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struct acpi_buffer *status_buf);
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acpi_status
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acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
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bool acpi_has_method(acpi_handle handle, char *name);
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acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
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u64 arg);
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acpi_status acpi_evaluate_ej0(acpi_handle handle);
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acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
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acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function);
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bool acpi_ata_match(acpi_handle handle);
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bool acpi_bay_match(acpi_handle handle);
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bool acpi_dock_match(acpi_handle handle);
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bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs);
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union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
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u64 rev, u64 func, union acpi_object *argv4);
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#ifdef CONFIG_ACPI
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static inline union acpi_object *
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acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev,
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u64 func, union acpi_object *argv4,
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acpi_object_type type)
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{
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union acpi_object *obj;
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obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4);
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if (obj && obj->type != type) {
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ACPI_FREE(obj);
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obj = NULL;
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}
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return obj;
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}
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#endif
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#define ACPI_INIT_DSM_ARGV4(cnt, eles) \
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{ \
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.package.type = ACPI_TYPE_PACKAGE, \
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.package.count = (cnt), \
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.package.elements = (eles) \
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}
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bool acpi_dev_found(const char *hid);
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bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
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bool acpi_reduced_hardware(void);
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#ifdef CONFIG_ACPI
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struct proc_dir_entry;
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#define ACPI_BUS_FILE_ROOT "acpi"
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extern struct proc_dir_entry *acpi_root_dir;
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enum acpi_bus_device_type {
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ACPI_BUS_TYPE_DEVICE = 0,
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ACPI_BUS_TYPE_POWER,
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ACPI_BUS_TYPE_PROCESSOR,
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ACPI_BUS_TYPE_THERMAL,
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ACPI_BUS_TYPE_POWER_BUTTON,
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ACPI_BUS_TYPE_SLEEP_BUTTON,
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ACPI_BUS_TYPE_ECDT_EC,
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ACPI_BUS_DEVICE_TYPE_COUNT
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};
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struct acpi_driver;
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struct acpi_device;
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/*
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* ACPI Scan Handler
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* -----------------
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*/
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struct acpi_hotplug_profile {
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struct kobject kobj;
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int (*scan_dependent)(struct acpi_device *adev);
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void (*notify_online)(struct acpi_device *adev);
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bool enabled:1;
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bool demand_offline:1;
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};
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static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
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struct kobject *kobj)
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{
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return container_of(kobj, struct acpi_hotplug_profile, kobj);
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}
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struct acpi_scan_handler {
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struct list_head list_node;
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const struct acpi_device_id *ids;
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bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
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int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
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void (*detach)(struct acpi_device *dev);
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void (*bind)(struct device *phys_dev);
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void (*unbind)(struct device *phys_dev);
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struct acpi_hotplug_profile hotplug;
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};
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/*
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* ACPI Hotplug Context
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* --------------------
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*/
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typedef int (*acpi_hp_notify) (struct acpi_device *, u32);
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typedef void (*acpi_hp_uevent) (struct acpi_device *, u32);
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typedef void (*acpi_hp_fixup) (struct acpi_device *);
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struct acpi_hotplug_context {
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struct acpi_device *self;
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acpi_hp_notify notify;
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acpi_hp_uevent uevent;
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acpi_hp_fixup fixup;
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};
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/*
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* ACPI Driver
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* -----------
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*/
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typedef int (*acpi_op_add) (struct acpi_device * device);
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typedef void (*acpi_op_remove) (struct acpi_device *device);
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typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
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struct acpi_device_ops {
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acpi_op_add add;
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acpi_op_remove remove;
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acpi_op_notify notify;
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};
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#define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
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struct acpi_driver {
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char name[80];
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char class[80];
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const struct acpi_device_id *ids; /* Supported Hardware IDs */
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unsigned int flags;
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struct acpi_device_ops ops;
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struct device_driver drv;
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};
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/*
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* ACPI Device
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* -----------
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*/
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/* Status (_STA) */
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struct acpi_device_status {
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u32 present:1;
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u32 enabled:1;
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u32 show_in_ui:1;
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u32 functional:1;
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u32 battery_present:1;
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u32 reserved:27;
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};
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/* Flags */
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struct acpi_device_flags {
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u32 dynamic_status:1;
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u32 removable:1;
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u32 ejectable:1;
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u32 power_manageable:1;
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u32 match_driver:1;
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u32 initialized:1;
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u32 visited:1;
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u32 hotplug_notify:1;
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u32 is_dock_station:1;
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u32 of_compatible_ok:1;
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u32 coherent_dma:1;
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u32 cca_seen:1;
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u32 enumeration_by_parent:1;
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u32 honor_deps:1;
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u32 reserved:18;
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};
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/* File System */
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struct acpi_device_dir {
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struct proc_dir_entry *entry;
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};
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#define acpi_device_dir(d) ((d)->dir.entry)
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/* Plug and Play */
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typedef char acpi_bus_id[8];
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typedef u64 acpi_bus_address;
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typedef char acpi_device_name[40];
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typedef char acpi_device_class[20];
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struct acpi_hardware_id {
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struct list_head list;
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const char *id;
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};
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struct acpi_pnp_type {
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u32 hardware_id:1;
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u32 bus_address:1;
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u32 platform_id:1;
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u32 backlight:1;
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u32 reserved:28;
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};
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struct acpi_device_pnp {
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acpi_bus_id bus_id; /* Object name */
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int instance_no; /* Instance number of this object */
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struct acpi_pnp_type type; /* ID type */
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acpi_bus_address bus_address; /* _ADR */
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char *unique_id; /* _UID */
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struct list_head ids; /* _HID and _CIDs */
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acpi_device_name device_name; /* Driver-determined */
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acpi_device_class device_class; /* " */
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union acpi_object *str_obj; /* unicode string for _STR method */
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};
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#define acpi_device_bid(d) ((d)->pnp.bus_id)
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#define acpi_device_adr(d) ((d)->pnp.bus_address)
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const char *acpi_device_hid(struct acpi_device *device);
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#define acpi_device_uid(d) ((d)->pnp.unique_id)
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#define acpi_device_name(d) ((d)->pnp.device_name)
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#define acpi_device_class(d) ((d)->pnp.device_class)
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/* Power Management */
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struct acpi_device_power_flags {
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u32 explicit_get:1; /* _PSC present? */
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u32 power_resources:1; /* Power resources */
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u32 inrush_current:1; /* Serialize Dx->D0 */
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u32 power_removed:1; /* Optimize Dx->D0 */
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u32 ignore_parent:1; /* Power is independent of parent power state */
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u32 dsw_present:1; /* _DSW present? */
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u32 reserved:26;
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};
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struct acpi_device_power_state {
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struct list_head resources; /* Power resources referenced */
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struct {
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u8 valid:1;
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u8 explicit_set:1; /* _PSx present? */
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u8 reserved:6;
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} flags;
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int power; /* % Power (compared to D0) */
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int latency; /* Dx->D0 time (microseconds) */
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};
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struct acpi_device_power {
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int state; /* Current state */
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struct acpi_device_power_flags flags;
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struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
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u8 state_for_enumeration; /* Deepest power state for enumeration */
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};
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struct acpi_dep_data {
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struct list_head node;
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acpi_handle supplier;
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acpi_handle consumer;
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bool honor_dep;
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bool met;
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bool free_when_met;
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};
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/* Performance Management */
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struct acpi_device_perf_flags {
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u8 reserved:8;
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};
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struct acpi_device_perf_state {
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struct {
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u8 valid:1;
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u8 reserved:7;
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} flags;
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u8 power; /* % Power (compared to P0) */
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u8 performance; /* % Performance ( " ) */
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int latency; /* Px->P0 time (microseconds) */
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};
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struct acpi_device_perf {
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int state;
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struct acpi_device_perf_flags flags;
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int state_count;
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struct acpi_device_perf_state *states;
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};
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/* Wakeup Management */
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struct acpi_device_wakeup_flags {
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u8 valid:1; /* Can successfully enable wakeup? */
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u8 notifier_present:1; /* Wake-up notify handler has been installed */
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};
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struct acpi_device_wakeup_context {
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void (*func)(struct acpi_device_wakeup_context *context);
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struct device *dev;
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};
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struct acpi_device_wakeup {
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acpi_handle gpe_device;
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u64 gpe_number;
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u64 sleep_state;
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struct list_head resources;
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struct acpi_device_wakeup_flags flags;
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struct acpi_device_wakeup_context context;
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struct wakeup_source *ws;
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int prepare_count;
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int enable_count;
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};
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struct acpi_device_physical_node {
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struct list_head node;
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struct device *dev;
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unsigned int node_id;
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bool put_online:1;
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};
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struct acpi_device_properties {
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struct list_head list;
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const guid_t *guid;
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union acpi_object *properties;
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void **bufs;
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};
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/* ACPI Device Specific Data (_DSD) */
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struct acpi_device_data {
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const union acpi_object *pointer;
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struct list_head properties;
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const union acpi_object *of_compatible;
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struct list_head subnodes;
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};
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struct acpi_gpio_mapping;
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#define ACPI_DEVICE_SWNODE_ROOT 0
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/*
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* The maximum expected number of CSI-2 data lanes.
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*
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* This number is not expected to ever have to be equal to or greater than the
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* number of bits in an unsigned long variable, but if it needs to be increased
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* above that limit, code will need to be adjusted accordingly.
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*/
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#define ACPI_DEVICE_CSI2_DATA_LANES 8
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#define ACPI_DEVICE_SWNODE_PORT_NAME_LENGTH 8
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enum acpi_device_swnode_dev_props {
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ACPI_DEVICE_SWNODE_DEV_ROTATION,
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ACPI_DEVICE_SWNODE_DEV_CLOCK_FREQUENCY,
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ACPI_DEVICE_SWNODE_DEV_LED_MAX_MICROAMP,
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ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_MICROAMP,
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ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_TIMEOUT_US,
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ACPI_DEVICE_SWNODE_DEV_NUM_OF,
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ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES
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};
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enum acpi_device_swnode_port_props {
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ACPI_DEVICE_SWNODE_PORT_REG,
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ACPI_DEVICE_SWNODE_PORT_NUM_OF,
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ACPI_DEVICE_SWNODE_PORT_NUM_ENTRIES
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};
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enum acpi_device_swnode_ep_props {
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ACPI_DEVICE_SWNODE_EP_REMOTE_EP,
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ACPI_DEVICE_SWNODE_EP_BUS_TYPE,
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ACPI_DEVICE_SWNODE_EP_REG,
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ACPI_DEVICE_SWNODE_EP_CLOCK_LANES,
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ACPI_DEVICE_SWNODE_EP_DATA_LANES,
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ACPI_DEVICE_SWNODE_EP_LANE_POLARITIES,
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/* TX only */
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ACPI_DEVICE_SWNODE_EP_LINK_FREQUENCIES,
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ACPI_DEVICE_SWNODE_EP_NUM_OF,
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ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES
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};
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/*
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* Each device has a root software node plus two times as many nodes as the
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* number of CSI-2 ports.
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*/
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#define ACPI_DEVICE_SWNODE_PORT(port) (2 * (port) + 1)
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#define ACPI_DEVICE_SWNODE_EP(endpoint) \
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(ACPI_DEVICE_SWNODE_PORT(endpoint) + 1)
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/**
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* struct acpi_device_software_node_port - MIPI DisCo for Imaging CSI-2 port
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* @port_name: Port name.
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* @data_lanes: "data-lanes" property values.
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* @lane_polarities: "lane-polarities" property values.
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* @link_frequencies: "link_frequencies" property values.
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* @port_nr: Port number.
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* @crs_crs2_local: _CRS CSI2 record present (i.e. this is a transmitter one).
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* @port_props: Port properties.
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* @ep_props: Endpoint properties.
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* @remote_ep: Reference to the remote endpoint.
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*/
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struct acpi_device_software_node_port {
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char port_name[ACPI_DEVICE_SWNODE_PORT_NAME_LENGTH + 1];
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u32 data_lanes[ACPI_DEVICE_CSI2_DATA_LANES];
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u32 lane_polarities[ACPI_DEVICE_CSI2_DATA_LANES + 1 /* clock lane */];
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u64 link_frequencies[ACPI_DEVICE_CSI2_DATA_LANES];
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unsigned int port_nr;
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bool crs_csi2_local;
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struct property_entry port_props[ACPI_DEVICE_SWNODE_PORT_NUM_ENTRIES];
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struct property_entry ep_props[ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES];
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struct software_node_ref_args remote_ep[1];
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};
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/**
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* struct acpi_device_software_nodes - Software nodes for an ACPI device
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* @dev_props: Device properties.
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* @nodes: Software nodes for root as well as ports and endpoints.
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* @nodeprts: Array of software node pointers, for (un)registering them.
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* @ports: Information related to each port and endpoint within a port.
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* @num_ports: The number of ports.
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*/
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struct acpi_device_software_nodes {
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struct property_entry dev_props[ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES];
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struct software_node *nodes;
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const struct software_node **nodeptrs;
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struct acpi_device_software_node_port *ports;
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unsigned int num_ports;
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};
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/* Device */
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struct acpi_device {
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u32 pld_crc;
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int device_type;
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acpi_handle handle; /* no handle for fixed hardware */
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struct fwnode_handle fwnode;
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struct list_head wakeup_list;
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struct list_head del_list;
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struct acpi_device_status status;
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struct acpi_device_flags flags;
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struct acpi_device_pnp pnp;
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struct acpi_device_power power;
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struct acpi_device_wakeup wakeup;
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struct acpi_device_perf performance;
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struct acpi_device_dir dir;
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struct acpi_device_data data;
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struct acpi_scan_handler *handler;
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struct acpi_hotplug_context *hp;
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struct acpi_device_software_nodes *swnodes;
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const struct acpi_gpio_mapping *driver_gpios;
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void *driver_data;
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struct device dev;
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unsigned int physical_node_count;
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unsigned int dep_unmet;
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struct list_head physical_node_list;
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struct mutex physical_node_lock;
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void (*remove)(struct acpi_device *);
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};
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/* Non-device subnode */
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struct acpi_data_node {
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struct list_head sibling;
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const char *name;
|
|
acpi_handle handle;
|
|
struct fwnode_handle fwnode;
|
|
struct fwnode_handle *parent;
|
|
struct acpi_device_data data;
|
|
struct kobject kobj;
|
|
struct completion kobj_done;
|
|
};
|
|
|
|
extern const struct fwnode_operations acpi_device_fwnode_ops;
|
|
extern const struct fwnode_operations acpi_data_fwnode_ops;
|
|
extern const struct fwnode_operations acpi_static_fwnode_ops;
|
|
|
|
bool is_acpi_device_node(const struct fwnode_handle *fwnode);
|
|
bool is_acpi_data_node(const struct fwnode_handle *fwnode);
|
|
|
|
static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
|
|
{
|
|
return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
|
|
}
|
|
|
|
#define to_acpi_device_node(__fwnode) \
|
|
({ \
|
|
typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
|
|
\
|
|
is_acpi_device_node(__to_acpi_device_node_fwnode) ? \
|
|
container_of(__to_acpi_device_node_fwnode, \
|
|
struct acpi_device, fwnode) : \
|
|
NULL; \
|
|
})
|
|
|
|
#define to_acpi_data_node(__fwnode) \
|
|
({ \
|
|
typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
|
|
\
|
|
is_acpi_data_node(__to_acpi_data_node_fwnode) ? \
|
|
container_of(__to_acpi_data_node_fwnode, \
|
|
struct acpi_data_node, fwnode) : \
|
|
NULL; \
|
|
})
|
|
|
|
static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
|
|
{
|
|
return !IS_ERR_OR_NULL(fwnode) &&
|
|
fwnode->ops == &acpi_static_fwnode_ops;
|
|
}
|
|
|
|
static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
|
|
const char *name)
|
|
{
|
|
return is_acpi_data_node(fwnode) ?
|
|
(!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
|
|
}
|
|
|
|
static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
|
|
{
|
|
return &adev->fwnode;
|
|
}
|
|
|
|
static inline void *acpi_driver_data(struct acpi_device *d)
|
|
{
|
|
return d->driver_data;
|
|
}
|
|
|
|
#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
|
|
#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
|
|
|
|
static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev)
|
|
{
|
|
if (adev->dev.parent)
|
|
return to_acpi_device(adev->dev.parent);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
|
|
{
|
|
*((u32 *)&adev->status) = sta;
|
|
}
|
|
|
|
static inline void acpi_set_hp_context(struct acpi_device *adev,
|
|
struct acpi_hotplug_context *hp)
|
|
{
|
|
hp->self = adev;
|
|
adev->hp = hp;
|
|
}
|
|
|
|
void acpi_initialize_hp_context(struct acpi_device *adev,
|
|
struct acpi_hotplug_context *hp,
|
|
acpi_hp_notify notify, acpi_hp_uevent uevent);
|
|
|
|
/* acpi_device.dev.bus == &acpi_bus_type */
|
|
extern const struct bus_type acpi_bus_type;
|
|
|
|
int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
|
|
int acpi_dev_for_each_child(struct acpi_device *adev,
|
|
int (*fn)(struct acpi_device *, void *), void *data);
|
|
int acpi_dev_for_each_child_reverse(struct acpi_device *adev,
|
|
int (*fn)(struct acpi_device *, void *),
|
|
void *data);
|
|
|
|
/*
|
|
* Events
|
|
* ------
|
|
*/
|
|
|
|
struct acpi_bus_event {
|
|
struct list_head node;
|
|
acpi_device_class device_class;
|
|
acpi_bus_id bus_id;
|
|
u32 type;
|
|
u32 data;
|
|
};
|
|
|
|
extern struct kobject *acpi_kobj;
|
|
extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
|
|
void acpi_bus_private_data_handler(acpi_handle, void *);
|
|
int acpi_bus_get_private_data(acpi_handle, void **);
|
|
int acpi_bus_attach_private_data(acpi_handle, void *);
|
|
void acpi_bus_detach_private_data(acpi_handle);
|
|
int acpi_dev_install_notify_handler(struct acpi_device *adev,
|
|
u32 handler_type,
|
|
acpi_notify_handler handler, void *context);
|
|
void acpi_dev_remove_notify_handler(struct acpi_device *adev,
|
|
u32 handler_type,
|
|
acpi_notify_handler handler);
|
|
extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
|
|
extern int register_acpi_notifier(struct notifier_block *);
|
|
extern int unregister_acpi_notifier(struct notifier_block *);
|
|
|
|
/*
|
|
* External Functions
|
|
*/
|
|
|
|
acpi_status acpi_bus_get_status_handle(acpi_handle handle,
|
|
unsigned long long *sta);
|
|
int acpi_bus_get_status(struct acpi_device *device);
|
|
|
|
int acpi_bus_set_power(acpi_handle handle, int state);
|
|
const char *acpi_power_state_string(int state);
|
|
int acpi_device_set_power(struct acpi_device *device, int state);
|
|
int acpi_bus_init_power(struct acpi_device *device);
|
|
int acpi_device_fix_up_power(struct acpi_device *device);
|
|
void acpi_device_fix_up_power_extended(struct acpi_device *adev);
|
|
void acpi_device_fix_up_power_children(struct acpi_device *adev);
|
|
int acpi_bus_update_power(acpi_handle handle, int *state_p);
|
|
int acpi_device_update_power(struct acpi_device *device, int *state_p);
|
|
bool acpi_bus_power_manageable(acpi_handle handle);
|
|
void acpi_dev_power_up_children_with_adr(struct acpi_device *adev);
|
|
u8 acpi_dev_power_state_for_wake(struct acpi_device *adev);
|
|
int acpi_device_power_add_dependent(struct acpi_device *adev,
|
|
struct device *dev);
|
|
void acpi_device_power_remove_dependent(struct acpi_device *adev,
|
|
struct device *dev);
|
|
|
|
#ifdef CONFIG_PM
|
|
bool acpi_bus_can_wakeup(acpi_handle handle);
|
|
#else
|
|
static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
|
|
#endif
|
|
|
|
void acpi_scan_lock_acquire(void);
|
|
void acpi_scan_lock_release(void);
|
|
void acpi_lock_hp_context(void);
|
|
void acpi_unlock_hp_context(void);
|
|
int acpi_scan_add_handler(struct acpi_scan_handler *handler);
|
|
/*
|
|
* use a macro to avoid include chaining to get THIS_MODULE
|
|
*/
|
|
#define acpi_bus_register_driver(drv) \
|
|
__acpi_bus_register_driver(drv, THIS_MODULE)
|
|
int __acpi_bus_register_driver(struct acpi_driver *driver, struct module *owner);
|
|
void acpi_bus_unregister_driver(struct acpi_driver *driver);
|
|
int acpi_bus_scan(acpi_handle handle);
|
|
void acpi_bus_trim(struct acpi_device *start);
|
|
acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
|
|
int acpi_match_device_ids(struct acpi_device *device,
|
|
const struct acpi_device_id *ids);
|
|
void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
|
|
char *modalias, size_t len);
|
|
|
|
static inline bool acpi_device_enumerated(struct acpi_device *adev)
|
|
{
|
|
return adev && adev->flags.initialized && adev->flags.visited;
|
|
}
|
|
|
|
/**
|
|
* module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
|
|
* @__acpi_driver: acpi_driver struct
|
|
*
|
|
* Helper macro for ACPI drivers which do not do anything special in module
|
|
* init/exit. This eliminates a lot of boilerplate. Each module may only
|
|
* use this macro once, and calling it replaces module_init() and module_exit()
|
|
*/
|
|
#define module_acpi_driver(__acpi_driver) \
|
|
module_driver(__acpi_driver, acpi_bus_register_driver, \
|
|
acpi_bus_unregister_driver)
|
|
|
|
/*
|
|
* Bind physical devices with ACPI devices
|
|
*/
|
|
struct acpi_bus_type {
|
|
struct list_head list;
|
|
const char *name;
|
|
bool (*match)(struct device *dev);
|
|
struct acpi_device * (*find_companion)(struct device *);
|
|
void (*setup)(struct device *);
|
|
};
|
|
int register_acpi_bus_type(struct acpi_bus_type *);
|
|
int unregister_acpi_bus_type(struct acpi_bus_type *);
|
|
int acpi_bind_one(struct device *dev, struct acpi_device *adev);
|
|
int acpi_unbind_one(struct device *dev);
|
|
|
|
enum acpi_bridge_type {
|
|
ACPI_BRIDGE_TYPE_PCIE = 1,
|
|
ACPI_BRIDGE_TYPE_CXL,
|
|
};
|
|
|
|
struct acpi_pci_root {
|
|
struct acpi_device * device;
|
|
struct pci_bus *bus;
|
|
u16 segment;
|
|
int bridge_type;
|
|
struct resource secondary; /* downstream bus range */
|
|
|
|
u32 osc_support_set; /* _OSC state of support bits */
|
|
u32 osc_control_set; /* _OSC state of control bits */
|
|
u32 osc_ext_support_set; /* _OSC state of extended support bits */
|
|
u32 osc_ext_control_set; /* _OSC state of extended control bits */
|
|
phys_addr_t mcfg_addr;
|
|
};
|
|
|
|
/* helper */
|
|
|
|
struct iommu_ops;
|
|
|
|
bool acpi_dma_supported(const struct acpi_device *adev);
|
|
enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
|
|
int acpi_iommu_fwspec_init(struct device *dev, u32 id,
|
|
struct fwnode_handle *fwnode,
|
|
const struct iommu_ops *ops);
|
|
int acpi_dma_get_range(struct device *dev, const struct bus_dma_region **map);
|
|
int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
|
|
const u32 *input_id);
|
|
static inline int acpi_dma_configure(struct device *dev,
|
|
enum dev_dma_attr attr)
|
|
{
|
|
return acpi_dma_configure_id(dev, attr, NULL);
|
|
}
|
|
struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
|
|
u64 address, bool check_children);
|
|
struct acpi_device *acpi_find_child_by_adr(struct acpi_device *adev,
|
|
acpi_bus_address adr);
|
|
int acpi_is_root_bridge(acpi_handle);
|
|
struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
|
|
|
|
int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
|
|
int acpi_disable_wakeup_device_power(struct acpi_device *dev);
|
|
|
|
#ifdef CONFIG_X86
|
|
bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status);
|
|
bool acpi_quirk_skip_acpi_ac_and_battery(void);
|
|
int acpi_install_cmos_rtc_space_handler(acpi_handle handle);
|
|
void acpi_remove_cmos_rtc_space_handler(acpi_handle handle);
|
|
int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
|
|
#else
|
|
static inline bool acpi_device_override_status(struct acpi_device *adev,
|
|
unsigned long long *status)
|
|
{
|
|
return false;
|
|
}
|
|
static inline bool acpi_quirk_skip_acpi_ac_and_battery(void)
|
|
{
|
|
return false;
|
|
}
|
|
static inline int acpi_install_cmos_rtc_space_handler(acpi_handle handle)
|
|
{
|
|
return 1;
|
|
}
|
|
static inline void acpi_remove_cmos_rtc_space_handler(acpi_handle handle)
|
|
{
|
|
}
|
|
static inline int
|
|
acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
|
|
{
|
|
*skip = false;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
|
|
bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
|
|
bool acpi_quirk_skip_gpio_event_handlers(void);
|
|
#else
|
|
static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
|
|
{
|
|
return false;
|
|
}
|
|
static inline bool acpi_quirk_skip_gpio_event_handlers(void)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM
|
|
void acpi_pm_wakeup_event(struct device *dev);
|
|
acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
|
|
void (*func)(struct acpi_device_wakeup_context *context));
|
|
acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
|
|
bool acpi_pm_device_can_wakeup(struct device *dev);
|
|
int acpi_pm_device_sleep_state(struct device *, int *, int);
|
|
int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
|
|
#else
|
|
static inline void acpi_pm_wakeup_event(struct device *dev)
|
|
{
|
|
}
|
|
static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
|
|
struct device *dev,
|
|
void (*func)(struct acpi_device_wakeup_context *context))
|
|
{
|
|
return AE_SUPPORT;
|
|
}
|
|
static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
|
|
{
|
|
return AE_SUPPORT;
|
|
}
|
|
static inline bool acpi_pm_device_can_wakeup(struct device *dev)
|
|
{
|
|
return false;
|
|
}
|
|
static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
|
|
{
|
|
if (p)
|
|
*p = ACPI_STATE_D0;
|
|
|
|
return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
|
|
m : ACPI_STATE_D0;
|
|
}
|
|
static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
|
|
bool acpi_sleep_state_supported(u8 sleep_state);
|
|
#else
|
|
static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
|
|
#endif
|
|
|
|
#ifdef CONFIG_ACPI_SLEEP
|
|
u32 acpi_target_system_state(void);
|
|
#else
|
|
static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
|
|
#endif
|
|
|
|
static inline bool acpi_device_power_manageable(struct acpi_device *adev)
|
|
{
|
|
return adev->flags.power_manageable;
|
|
}
|
|
|
|
static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
|
|
{
|
|
return adev->wakeup.flags.valid;
|
|
}
|
|
|
|
static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
|
|
{
|
|
return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
|
|
((acpi_gbl_FADT.header.revision < 6) &&
|
|
adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
|
|
}
|
|
|
|
int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer);
|
|
|
|
static inline bool acpi_dev_hid_match(struct acpi_device *adev, const char *hid2)
|
|
{
|
|
const char *hid1 = acpi_device_hid(adev);
|
|
|
|
return hid1 && hid2 && !strcmp(hid1, hid2);
|
|
}
|
|
|
|
static inline bool acpi_str_uid_match(struct acpi_device *adev, const char *uid2)
|
|
{
|
|
const char *uid1 = acpi_device_uid(adev);
|
|
|
|
return uid1 && uid2 && !strcmp(uid1, uid2);
|
|
}
|
|
|
|
static inline bool acpi_int_uid_match(struct acpi_device *adev, u64 uid2)
|
|
{
|
|
u64 uid1;
|
|
|
|
return !acpi_dev_uid_to_integer(adev, &uid1) && uid1 == uid2;
|
|
}
|
|
|
|
#define TYPE_ENTRY(type, x) \
|
|
const type: x, \
|
|
type: x
|
|
|
|
#define ACPI_STR_TYPES(match) \
|
|
TYPE_ENTRY(unsigned char *, match), \
|
|
TYPE_ENTRY(signed char *, match), \
|
|
TYPE_ENTRY(char *, match), \
|
|
TYPE_ENTRY(void *, match)
|
|
|
|
/**
|
|
* acpi_dev_uid_match - Match device by supplied UID
|
|
* @adev: ACPI device to match.
|
|
* @uid2: Unique ID of the device.
|
|
*
|
|
* Matches UID in @adev with given @uid2.
|
|
*
|
|
* Returns: %true if matches, %false otherwise.
|
|
*/
|
|
#define acpi_dev_uid_match(adev, uid2) \
|
|
_Generic(uid2, \
|
|
/* Treat @uid2 as a string for acpi string types */ \
|
|
ACPI_STR_TYPES(acpi_str_uid_match), \
|
|
/* Treat as an integer otherwise */ \
|
|
default: acpi_int_uid_match)(adev, uid2)
|
|
|
|
/**
|
|
* acpi_dev_hid_uid_match - Match device by supplied HID and UID
|
|
* @adev: ACPI device to match.
|
|
* @hid2: Hardware ID of the device.
|
|
* @uid2: Unique ID of the device, pass NULL to not check _UID.
|
|
*
|
|
* Matches HID and UID in @adev with given @hid2 and @uid2. Absence of @uid2
|
|
* will be treated as a match. If user wants to validate @uid2, it should be
|
|
* done before calling this function.
|
|
*
|
|
* Returns: %true if matches or @uid2 is NULL, %false otherwise.
|
|
*/
|
|
#define acpi_dev_hid_uid_match(adev, hid2, uid2) \
|
|
(acpi_dev_hid_match(adev, hid2) && \
|
|
/* Distinguish integer 0 from NULL @uid2 */ \
|
|
(_Generic(uid2, ACPI_STR_TYPES(!(uid2)), default: 0) || \
|
|
acpi_dev_uid_match(adev, uid2)))
|
|
|
|
void acpi_dev_clear_dependencies(struct acpi_device *supplier);
|
|
bool acpi_dev_ready_for_enumeration(const struct acpi_device *device);
|
|
struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier,
|
|
struct acpi_device *start);
|
|
|
|
/**
|
|
* for_each_acpi_consumer_dev - iterate over the consumer ACPI devices for a
|
|
* given supplier
|
|
* @supplier: Pointer to the supplier's ACPI device
|
|
* @consumer: Pointer to &struct acpi_device to hold the consumer, initially NULL
|
|
*/
|
|
#define for_each_acpi_consumer_dev(supplier, consumer) \
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for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \
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consumer; \
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consumer = acpi_dev_get_next_consumer_dev(supplier, consumer))
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struct acpi_device *
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acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
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struct acpi_device *
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acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
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/**
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* for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
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* @adev: pointer to the matching ACPI device, NULL at the end of the loop
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* @hid: Hardware ID of the device.
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* @uid: Unique ID of the device, pass NULL to not check _UID
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* @hrv: Hardware Revision of the device, pass -1 to not check _HRV
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*
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* The caller is responsible for invoking acpi_dev_put() on the returned device.
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*/
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#define for_each_acpi_dev_match(adev, hid, uid, hrv) \
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for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \
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adev; \
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adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
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static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
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{
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return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
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}
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static inline void acpi_dev_put(struct acpi_device *adev)
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{
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if (adev)
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put_device(&adev->dev);
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}
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struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle);
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struct acpi_device *acpi_get_acpi_dev(acpi_handle handle);
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static inline void acpi_put_acpi_dev(struct acpi_device *adev)
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{
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acpi_dev_put(adev);
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}
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int acpi_wait_for_acpi_ipmi(void);
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#else /* CONFIG_ACPI */
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static inline int register_acpi_bus_type(void *bus) { return 0; }
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static inline int unregister_acpi_bus_type(void *bus) { return 0; }
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static inline int acpi_wait_for_acpi_ipmi(void) { return 0; }
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#endif /* CONFIG_ACPI */
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#endif /*__ACPI_BUS_H__*/
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