/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *  acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
 *
 *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
 *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
 */

#ifndef __ACPI_BUS_H__
#define __ACPI_BUS_H__

#include <linux/completion.h>
#include <linux/container_of.h>
#include <linux/device.h>
#include <linux/kobject.h>
#include <linux/mutex.h>
#include <linux/property.h>
#include <linux/types.h>

struct acpi_handle_list {
        u32 count;
        acpi_handle *handles;
};

/* acpi_utils.h */
acpi_status
acpi_extract_package(union acpi_object *package,
                     struct acpi_buffer *format, struct acpi_buffer *buffer);
acpi_status
acpi_evaluate_integer(acpi_handle handle,
                      acpi_string pathname,
                      struct acpi_object_list *arguments, unsigned long long *data);
bool acpi_evaluate_reference(acpi_handle handle, acpi_string pathname,
                             struct acpi_object_list *arguments,
                             struct acpi_handle_list *list);
bool acpi_handle_list_equal(struct acpi_handle_list *list1,
                            struct acpi_handle_list *list2);
void acpi_handle_list_replace(struct acpi_handle_list *dst,
                              struct acpi_handle_list *src);
void acpi_handle_list_free(struct acpi_handle_list *list);
bool acpi_device_dep(acpi_handle target, acpi_handle match);
acpi_status
acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
                  struct acpi_buffer *status_buf);

bool acpi_has_method(acpi_handle handle, char *name);
acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
                                       u64 arg);
acpi_status acpi_evaluate_ej0(acpi_handle handle);
acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function);
bool acpi_ata_match(acpi_handle handle);
bool acpi_bay_match(acpi_handle handle);
bool acpi_dock_match(acpi_handle handle);

bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs);
union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
                        u64 rev, u64 func, union acpi_object *argv4);
#ifdef CONFIG_ACPI
bool
acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);

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)
{
        union acpi_object *obj;

        obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4);
        if (obj && obj->type != type) {
                ACPI_FREE(obj);
                obj = NULL;
        }

        return obj;
}
#endif

#define ACPI_INIT_DSM_ARGV4(cnt, eles)                  \
        {                                               \
          .package.type = ACPI_TYPE_PACKAGE,            \
          .package.count = (cnt),                       \
          .package.elements = (eles)                    \
        }

bool acpi_dev_found(const char *hid);
bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
bool acpi_reduced_hardware(void);

#ifdef CONFIG_ACPI

struct proc_dir_entry;

#define ACPI_BUS_FILE_ROOT      "acpi"
extern struct proc_dir_entry *acpi_root_dir;

enum acpi_bus_device_type {
        ACPI_BUS_TYPE_DEVICE = 0,
        ACPI_BUS_TYPE_POWER,
        ACPI_BUS_TYPE_PROCESSOR,
        ACPI_BUS_TYPE_THERMAL,
        ACPI_BUS_TYPE_POWER_BUTTON,
        ACPI_BUS_TYPE_SLEEP_BUTTON,
        ACPI_BUS_TYPE_ECDT_EC,
        ACPI_BUS_DEVICE_TYPE_COUNT
};

struct acpi_driver;
struct acpi_device;

/*
 * ACPI Scan Handler
 * -----------------
 */

struct acpi_hotplug_profile {
        struct kobject kobj;
        int (*scan_dependent)(struct acpi_device *adev);
        void (*notify_online)(struct acpi_device *adev);
        bool enabled:1;
        bool demand_offline:1;
};

static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
                                                struct kobject *kobj)
{
        return container_of(kobj, struct acpi_hotplug_profile, kobj);
}

struct acpi_scan_handler {
        struct list_head list_node;
        const struct acpi_device_id *ids;
        bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
        int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
        void (*detach)(struct acpi_device *dev);
        void (*post_eject)(struct acpi_device *dev);
        void (*bind)(struct device *phys_dev);
        void (*unbind)(struct device *phys_dev);
        struct acpi_hotplug_profile hotplug;
};

/*
 * ACPI Hotplug Context
 * --------------------
 */

typedef int (*acpi_hp_notify) (struct acpi_device *, u32);
typedef void (*acpi_hp_uevent) (struct acpi_device *, u32);
typedef void (*acpi_hp_fixup) (struct acpi_device *);

struct acpi_hotplug_context {
        struct acpi_device *self;
        acpi_hp_notify notify;
        acpi_hp_uevent uevent;
        acpi_hp_fixup fixup;
};

/*
 * ACPI Driver
 * -----------
 */

typedef int (*acpi_op_add) (struct acpi_device * device);
typedef void (*acpi_op_remove) (struct acpi_device *device);
typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);

struct acpi_device_ops {
        acpi_op_add add;
        acpi_op_remove remove;
        acpi_op_notify notify;
};

#define ACPI_DRIVER_ALL_NOTIFY_EVENTS   0x1     /* system AND device events */

struct acpi_driver {
        char name[80];
        char class[80];
        const struct acpi_device_id *ids; /* Supported Hardware IDs */
        unsigned int flags;
        struct acpi_device_ops ops;
        struct device_driver drv;
};

/*
 * ACPI Device
 * -----------
 */

/* Status (_STA) */

struct acpi_device_status {
        u32 present:1;
        u32 enabled:1;
        u32 show_in_ui:1;
        u32 functional:1;
        u32 battery_present:1;
        u32 reserved:27;
};

/* Flags */

struct acpi_device_flags {
        u32 dynamic_status:1;
        u32 removable:1;
        u32 ejectable:1;
        u32 power_manageable:1;
        u32 match_driver:1;
        u32 initialized:1;
        u32 visited:1;
        u32 hotplug_notify:1;
        u32 is_dock_station:1;
        u32 of_compatible_ok:1;
        u32 coherent_dma:1;
        u32 cca_seen:1;
        u32 enumeration_by_parent:1;
        u32 honor_deps:1;
        u32 reserved:18;
};

/* File System */

struct acpi_device_dir {
        struct proc_dir_entry *entry;
};

#define acpi_device_dir(d)      ((d)->dir.entry)

/* Plug and Play */

#define MAX_ACPI_DEVICE_NAME_LEN        40
#define MAX_ACPI_CLASS_NAME_LEN         20
typedef char acpi_bus_id[8];
typedef u64 acpi_bus_address;
typedef char acpi_device_name[MAX_ACPI_DEVICE_NAME_LEN];
typedef char acpi_device_class[MAX_ACPI_CLASS_NAME_LEN];

struct acpi_hardware_id {
        struct list_head list;
        const char *id;
};

struct acpi_pnp_type {
        u32 hardware_id:1;
        u32 bus_address:1;
        u32 platform_id:1;
        u32 backlight:1;
        u32 reserved:28;
};

struct acpi_device_pnp {
        acpi_bus_id bus_id;             /* Object name */
        int instance_no;                /* Instance number of this object */
        struct acpi_pnp_type type;      /* ID type */
        acpi_bus_address bus_address;   /* _ADR */
        char *unique_id;                /* _UID */
        struct list_head ids;           /* _HID and _CIDs */
        acpi_device_name device_name;   /* Driver-determined */
        acpi_device_class device_class; /*        "          */
};

#define acpi_device_bid(d)      ((d)->pnp.bus_id)
#define acpi_device_adr(d)      ((d)->pnp.bus_address)
const char *acpi_device_hid(struct acpi_device *device);
#define acpi_device_uid(d)      ((d)->pnp.unique_id)
#define acpi_device_name(d)     ((d)->pnp.device_name)
#define acpi_device_class(d)    ((d)->pnp.device_class)

/* Power Management */

struct acpi_device_power_flags {
        u32 explicit_get:1;     /* _PSC present? */
        u32 power_resources:1;  /* Power resources */
        u32 inrush_current:1;   /* Serialize Dx->D0 */
        u32 power_removed:1;    /* Optimize Dx->D0 */
        u32 ignore_parent:1;    /* Power is independent of parent power state */
        u32 dsw_present:1;      /* _DSW present? */
        u32 reserved:26;
};

struct acpi_device_power_state {
        struct list_head resources;     /* Power resources referenced */
        struct {
                u8 valid:1;
                u8 explicit_set:1;      /* _PSx present? */
                u8 reserved:6;
        } flags;
        int power;              /* % Power (compared to D0) */
        int latency;            /* Dx->D0 time (microseconds) */
};

struct acpi_device_power {
        int state;              /* Current state */
        struct acpi_device_power_flags flags;
        struct acpi_device_power_state states[ACPI_D_STATE_COUNT];      /* Power states (D0-D3Cold) */
        u8 state_for_enumeration; /* Deepest power state for enumeration */
};

struct acpi_dep_data {
        struct list_head node;
        acpi_handle supplier;
        acpi_handle consumer;
        bool honor_dep;
        bool met;
        bool free_when_met;
};

/* Performance Management */

struct acpi_device_perf_flags {
        u8 reserved:8;
};

struct acpi_device_perf_state {
        struct {
                u8 valid:1;
                u8 reserved:7;
        } flags;
        u8 power;               /* % Power (compared to P0) */
        u8 performance;         /* % Performance (    "   ) */
        int latency;            /* Px->P0 time (microseconds) */
};

struct acpi_device_perf {
        int state;
        struct acpi_device_perf_flags flags;
        int state_count;
        struct acpi_device_perf_state *states;
};

/* Wakeup Management */
struct acpi_device_wakeup_flags {
        u8 valid:1;             /* Can successfully enable wakeup? */
        u8 notifier_present:1;  /* Wake-up notify handler has been installed */
};

struct acpi_device_wakeup_context {
        void (*func)(struct acpi_device_wakeup_context *context);
        struct device *dev;
};

struct acpi_device_wakeup {
        acpi_handle gpe_device;
        u64 gpe_number;
        u64 sleep_state;
        struct list_head resources;
        struct acpi_device_wakeup_flags flags;
        struct acpi_device_wakeup_context context;
        struct wakeup_source *ws;
        int prepare_count;
        int enable_count;
};

struct acpi_device_physical_node {
        struct list_head node;
        struct device *dev;
        unsigned int node_id;
        bool put_online:1;
};

struct acpi_device_properties {
        struct list_head list;
        const guid_t *guid;
        union acpi_object *properties;
        void **bufs;
};

/* ACPI Device Specific Data (_DSD) */
struct acpi_device_data {
        const union acpi_object *pointer;
        struct list_head properties;
        const union acpi_object *of_compatible;
        struct list_head subnodes;
};

struct acpi_gpio_mapping;

#define ACPI_DEVICE_SWNODE_ROOT                 0

/*
 * The maximum expected number of CSI-2 data lanes.
 *
 * This number is not expected to ever have to be equal to or greater than the
 * number of bits in an unsigned long variable, but if it needs to be increased
 * above that limit, code will need to be adjusted accordingly.
 */
#define ACPI_DEVICE_CSI2_DATA_LANES             8

#define ACPI_DEVICE_SWNODE_PORT_NAME_LENGTH     8

enum acpi_device_swnode_dev_props {
        ACPI_DEVICE_SWNODE_DEV_ROTATION,
        ACPI_DEVICE_SWNODE_DEV_CLOCK_FREQUENCY,
        ACPI_DEVICE_SWNODE_DEV_LED_MAX_MICROAMP,
        ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_MICROAMP,
        ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_TIMEOUT_US,
        ACPI_DEVICE_SWNODE_DEV_NUM_OF,
        ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES
};

enum acpi_device_swnode_port_props {
        ACPI_DEVICE_SWNODE_PORT_REG,
        ACPI_DEVICE_SWNODE_PORT_NUM_OF,
        ACPI_DEVICE_SWNODE_PORT_NUM_ENTRIES
};

enum acpi_device_swnode_ep_props {
        ACPI_DEVICE_SWNODE_EP_REMOTE_EP,
        ACPI_DEVICE_SWNODE_EP_BUS_TYPE,
        ACPI_DEVICE_SWNODE_EP_REG,
        ACPI_DEVICE_SWNODE_EP_CLOCK_LANES,
        ACPI_DEVICE_SWNODE_EP_DATA_LANES,
        ACPI_DEVICE_SWNODE_EP_LANE_POLARITIES,
        /* TX only */
        ACPI_DEVICE_SWNODE_EP_LINK_FREQUENCIES,
        ACPI_DEVICE_SWNODE_EP_NUM_OF,
        ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES
};

/*
 * Each device has a root software node plus two times as many nodes as the
 * number of CSI-2 ports.
 */
#define ACPI_DEVICE_SWNODE_PORT(port)   (2 * (port) + 1)
#define ACPI_DEVICE_SWNODE_EP(endpoint) \
                (ACPI_DEVICE_SWNODE_PORT(endpoint) + 1)

/**
 * struct acpi_device_software_node_port - MIPI DisCo for Imaging CSI-2 port
 * @port_name: Port name.
 * @data_lanes: "data-lanes" property values.
 * @lane_polarities: "lane-polarities" property values.
 * @link_frequencies: "link_frequencies" property values.
 * @port_nr: Port number.
 * @crs_crs2_local: _CRS CSI2 record present (i.e. this is a transmitter one).
 * @port_props: Port properties.
 * @ep_props: Endpoint properties.
 * @remote_ep: Reference to the remote endpoint.
 */
struct acpi_device_software_node_port {
        char port_name[ACPI_DEVICE_SWNODE_PORT_NAME_LENGTH + 1];
        u32 data_lanes[ACPI_DEVICE_CSI2_DATA_LANES];
        u32 lane_polarities[ACPI_DEVICE_CSI2_DATA_LANES + 1 /* clock lane */];
        u64 link_frequencies[ACPI_DEVICE_CSI2_DATA_LANES];
        unsigned int port_nr;
        bool crs_csi2_local;

        struct property_entry port_props[ACPI_DEVICE_SWNODE_PORT_NUM_ENTRIES];
        struct property_entry ep_props[ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES];

        struct software_node_ref_args remote_ep[1];
};

/**
 * struct acpi_device_software_nodes - Software nodes for an ACPI device
 * @dev_props: Device properties.
 * @nodes: Software nodes for root as well as ports and endpoints.
 * @nodeprts: Array of software node pointers, for (un)registering them.
 * @ports: Information related to each port and endpoint within a port.
 * @num_ports: The number of ports.
 */
struct acpi_device_software_nodes {
        struct property_entry dev_props[ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES];
        struct software_node *nodes;
        const struct software_node **nodeptrs;
        struct acpi_device_software_node_port *ports;
        unsigned int num_ports;
};

/* Device */
struct acpi_device {
        u32 pld_crc;
        int device_type;
        acpi_handle handle;             /* no handle for fixed hardware */
        struct fwnode_handle fwnode;
        struct list_head wakeup_list;
        struct list_head del_list;
        struct acpi_device_status status;
        struct acpi_device_flags flags;
        struct acpi_device_pnp pnp;
        struct acpi_device_power power;
        struct acpi_device_wakeup wakeup;
        struct acpi_device_perf performance;
        struct acpi_device_dir dir;
        struct acpi_device_data data;
        struct acpi_scan_handler *handler;
        struct acpi_hotplug_context *hp;
        struct acpi_device_software_nodes *swnodes;
        const struct acpi_gpio_mapping *driver_gpios;
        void *driver_data;
        struct device dev;
        unsigned int physical_node_count;
        unsigned int dep_unmet;
        struct list_head physical_node_list;
        struct mutex physical_node_lock;
        void (*remove)(struct acpi_device *);
};

/* Non-device subnode */
struct acpi_data_node {
        struct list_head sibling;
        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_const(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);
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)                  \
        for (consumer = acpi_dev_get_next_consumer_dev(supplier, NULL); \
             consumer;                                                  \
             consumer = acpi_dev_get_next_consumer_dev(supplier, consumer))

struct acpi_device *
acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
struct acpi_device *
acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);

/**
 * for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
 * @adev: pointer to the matching ACPI device, NULL at the end of the loop
 * @hid: Hardware ID of the device.
 * @uid: Unique ID of the device, pass NULL to not check _UID
 * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
 *
 * The caller is responsible for invoking acpi_dev_put() on the returned device.
 */
#define for_each_acpi_dev_match(adev, hid, uid, hrv)                    \
        for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv);        \
             adev;                                                      \
             adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))

static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
{
        return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
}

static inline void acpi_dev_put(struct acpi_device *adev)
{
        if (adev)
                put_device(&adev->dev);
}

struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle);
struct acpi_device *acpi_get_acpi_dev(acpi_handle handle);

static inline void acpi_put_acpi_dev(struct acpi_device *adev)
{
        acpi_dev_put(adev);
}

int acpi_wait_for_acpi_ipmi(void);

int acpi_scan_add_dep(acpi_handle handle, struct acpi_handle_list *dep_devices);
u32 arch_acpi_add_auto_dep(acpi_handle handle);
#else   /* CONFIG_ACPI */

static inline int register_acpi_bus_type(void *bus) { return 0; }
static inline int unregister_acpi_bus_type(void *bus) { return 0; }

static inline int acpi_wait_for_acpi_ipmi(void) { return 0; }

static inline const char *acpi_device_hid(struct acpi_device *device)
{
        return "";
}

static inline bool
acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld)
{
        return false;
}

#define for_each_acpi_consumer_dev(supplier, consumer)                  \
        for (consumer = NULL; false && (supplier);)

#define for_each_acpi_dev_match(adev, hid, uid, hrv)                    \
        for (adev = NULL; false && (hid) && (uid) && (hrv); )

#endif                          /* CONFIG_ACPI */

#endif /*__ACPI_BUS_H__*/