// SPDX-License-Identifier: GPL-2.0 //! Advanced Configuration and Power Interface abstractions. use crate::{    bindings,    device_id::{RawDeviceId, RawDeviceIdIndex},    prelude::*,}; /// IdTable type for ACPI drivers.pub type IdTable<T> = &'static dyn kernel::device_id::IdTable<DeviceId, T>; /// An ACPI device id.#[repr(transparent)]#[derive(Clone, Copy)]pub struct DeviceId(bindings::acpi_device_id); // SAFETY: `DeviceId` is a `#[repr(transparent)]` wrapper of `acpi_device_id` and does not add// additional invariants, so it's safe to transmute to `RawType`.unsafe impl RawDeviceId for DeviceId {    type RawType = bindings::acpi_device_id;} // SAFETY: `DRIVER_DATA_OFFSET` is the offset to the `driver_data` field.unsafe impl RawDeviceIdIndex for DeviceId {    const DRIVER_DATA_OFFSET: usize = core::mem::offset_of!(bindings::acpi_device_id, driver_data);     fn index(&self) -> usize {        self.0.driver_data    }} impl DeviceId {    const ACPI_ID_LEN: usize = 16;     /// Create a new device id from an ACPI 'id' string.    #[inline(always)]    pub const fn new(id: &'static CStr) -> Self {        let src = id.to_bytes_with_nul();        build_assert!(src.len() <= Self::ACPI_ID_LEN, "ID exceeds 16 bytes");        let mut acpi: bindings::acpi_device_id = pin_init::zeroed();        let mut i = 0;        while i < src.len() {            acpi.id[i] = src[i];            i += 1;        }         Self(acpi)    }} /// Create an ACPI `IdTable` with an "alias" for modpost.#[macro_export]macro_rules! acpi_device_table {    ($table_name:ident, $module_table_name:ident, $id_info_type: ty, $table_data: expr) => {        const $table_name: $crate::device_id::IdArray<            $crate::acpi::DeviceId,            $id_info_type,            { $table_data.len() },        > = $crate::device_id::IdArray::new($table_data);         $crate::module_device_table!("acpi", $module_table_name, $table_name);    };}