American Journal of Embedded Systems and Applications

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Design on Linux Platform Driver for Embedded Systems

In the development of embedded systems, driver design is one of its core technologies. In the driver design, Linux driver occupies an important position. For the design of Linux driver, platform model is an important driver design method which is introduced after Linux 2.6. This paper first introduces the driving principle and architecture of Linux platform model, and describes the device, driver and device registration and unloading of the platform model in detail. Then, the driver code of watchdog platform in Linux kernel is analyzed. Finally, taking the embedded development environment tiny4412 as an example, a driver design example of Linux platform is given. The platform driver architecture has the characteristics of reusing framework code, strong independence of device resources and drivers, simple code, unified kernel interface, easy maintenance and expansion. In the development of specific drivers, we only need to focus on keeping the underlying device operation function set corresponding one by one with the kernel interface provided by the driver structure, and ensuring device.name and driver.name consistent, and making the platform device registered in the kernel space before the platform driver, which can make the driver run well and stably, greatly reduce the work intensity and shorten the development time of new products. Compared with the traditional device driver mechanism, the Linux platform driver mechanism registers the resources of the device into the kernel which is managed by the kernel, and driver uses these resources by applying standard interface provided by platform_device, which improves the independence of driver and resource management, and has better portability and security. The developing test shows that the driver based on this architecture has good portability, maintainability and scalability.

Linux Platform Driver, Embedded System, Ttiny4412

APA Style

Mei Rifei, Xiao Laisheng. (2022). Design on Linux Platform Driver for Embedded Systems. American Journal of Embedded Systems and Applications, 9(1), 1-5. https://doi.org/10.11648/j.ajesa.20220901.11

ACS Style

Mei Rifei; Xiao Laisheng. Design on Linux Platform Driver for Embedded Systems. Am. J. Embed. Syst. Appl. 2022, 9(1), 1-5. doi: 10.11648/j.ajesa.20220901.11

AMA Style

Mei Rifei, Xiao Laisheng. Design on Linux Platform Driver for Embedded Systems. Am J Embed Syst Appl. 2022;9(1):1-5. doi: 10.11648/j.ajesa.20220901.11

Copyright © 2022 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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