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