linux/drivers/acpi/acpi_platform.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * ACPI support for platform bus type.
 *
 * Copyright (C) 2012, Intel Corporation
 * Authors: Mika Westerberg <[email protected]>
 *          Mathias Nyman <[email protected]>
 *          Rafael J. Wysocki <[email protected]>
 */

#include <linux/acpi.h>
#include <linux/bits.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/pci.h>
#include <linux/platform_device.h>

#include "internal.h"

/* Exclude devices that have no _CRS resources provided */
#define ACPI_ALLOW_WO_RESOURCES …

static const struct acpi_device_id forbidden_id_list[] = …;

static struct platform_device *acpi_platform_device_find_by_companion(struct acpi_device *adev)
{ … }

static int acpi_platform_device_remove_notify(struct notifier_block *nb,
					      unsigned long value, void *arg)
{ … }

static struct notifier_block acpi_platform_notifier = …;

static void acpi_platform_fill_resource(struct acpi_device *adev,
	const struct resource *src, struct resource *dest)
{ … }

static unsigned int acpi_platform_resource_count(struct acpi_resource *ares, void *data)
{ … }

/**
 * acpi_create_platform_device - Create platform device for ACPI device node
 * @adev: ACPI device node to create a platform device for.
 * @properties: Optional collection of build-in properties.
 *
 * Check if the given @adev can be represented as a platform device and, if
 * that's the case, create and register a platform device, populate its common
 * resources and returns a pointer to it.  Otherwise, return %NULL.
 *
 * Name of the platform device will be the same as @adev's.
 */
struct platform_device *acpi_create_platform_device(struct acpi_device *adev,
						    const struct property_entry *properties)
{ … }
EXPORT_SYMBOL_GPL(…);

void __init acpi_platform_init(void)
{ … }