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/* SPDX-License-Identifier: GPL-2.0 */
/*
* KUnit basic device implementation
*
* Helpers for creating and managing fake devices for KUnit tests.
*
* Copyright (C) 2023, Google LLC.
* Author: David Gow <davidgow@google.com>
*/
#ifndef _KUNIT_DEVICE_H
#define _KUNIT_DEVICE_H
#if IS_ENABLED(CONFIG_KUNIT)
#include <kunit/test.h>
struct device;
struct device_driver;
/**
* kunit_driver_create() - Create a struct device_driver attached to the kunit_bus
* @test: The test context object.
* @name: The name to give the created driver.
*
* Creates a struct device_driver attached to the kunit_bus, with the name @name.
* This driver will automatically be cleaned up on test exit.
*
* Return: a stub struct device_driver, managed by KUnit, with the name @name.
*/
struct device_driver *kunit_driver_create(struct kunit *test, const char *name);
/**
* kunit_device_register() - Create a struct device for use in KUnit tests
* @test: The test context object.
* @name: The name to give the created device.
*
* Creates a struct kunit_device (which is a struct device) with the given name,
* and a corresponding driver. The device and driver will be cleaned up on test
* exit, or when kunit_device_unregister is called. See also
* kunit_device_register_with_driver, if you wish to provide your own
* struct device_driver.
*
* Return: a pointer to a struct device which will be cleaned up when the test
* exits, or an error pointer if the device could not be allocated or registered.
*/
struct device *kunit_device_register(struct kunit *test, const char *name);
/**
* kunit_device_register_with_driver() - Create a struct device for use in KUnit tests
* @test: The test context object.
* @name: The name to give the created device.
* @drv: The struct device_driver to associate with the device.
*
* Creates a struct kunit_device (which is a struct device) with the given
* name, and driver. The device will be cleaned up on test exit, or when
* kunit_device_unregister is called. See also kunit_device_register, if you
* wish KUnit to create and manage a driver for you.
*
* Return: a pointer to a struct device which will be cleaned up when the test
* exits, or an error pointer if the device could not be allocated or registered.
*/
struct device *kunit_device_register_with_driver(struct kunit *test,
const char *name,
const struct device_driver *drv);
/**
* kunit_device_unregister() - Unregister a KUnit-managed device
* @test: The test context object which created the device
* @dev: The device.
*
* Unregisters and destroys a struct device which was created with
* kunit_device_register or kunit_device_register_with_driver. If KUnit created
* a driver, cleans it up as well.
*/
void kunit_device_unregister(struct kunit *test, struct device *dev);
#endif
#endif