IoT & Hardware
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You're reading from  Linux Device Driver Development Cookbook

Product typeBook
Published inMay 2019
Reading LevelIntermediate
PublisherPackt
ISBN-139781838558802
Edition1st Edition
Languages
C
Tools
Linux
Concepts
Embedded Systems
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Author (1)
Rodolfo Giometti
Rodolfo Giometti
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Rodolfo Giometti

Rodolfo Giometti is an engineer, IT specialist, GNU/Linux expert and software libre evangelist. He is the author of the books BeagleBone Essentials, BeagleBone Home Automation Blueprints and GNU/Linux Rapid Embedded Programming by Packt Publishing and maintainer of the LinuxPPS projects. He still actively contributes to the Linux source code with several patches and new device drivers for industrial applications devices. During his 20+ years of experience, he has worked on the x86, ARM, MIPS, and PowerPC-based platforms. Now, he is the co-chief at HCE Engineering S.r.l., where he designs new hardware and software systems for the quick prototyping in industry environment, control automation, and remote monitoring.
Read more about Rodolfo Giometti

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Using a device tree to describe a character driver

We have seen that by using a device tree, we can specify different driver settings and then modify the driver's functionalities. However, our possibilities do not finish here! In fact, we can use the same code for different driver's releases or a different types of the same device.

How to manage different device types

Let's suppose our chrdev has two other implementations (plus the current one) in which the hardware is done in such a way that most parameters are fixed (and well known) and not selectable by the developer; in this case, we can still use node properties to specify them, but doing this is error prone and it forces the user to know these constraints...

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Linux Device Driver Development Cookbook
Published in: May 2019Publisher: PacktISBN-13: 9781838558802
© 2019 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Rodolfo Giometti

Rodolfo Giometti is an engineer, IT specialist, GNU/Linux expert and software libre evangelist. He is the author of the books BeagleBone Essentials, BeagleBone Home Automation Blueprints and GNU/Linux Rapid Embedded Programming by Packt Publishing and maintainer of the LinuxPPS projects. He still actively contributes to the Linux source code with several patches and new device drivers for industrial applications devices. During his 20+ years of experience, he has worked on the x86, ARM, MIPS, and PowerPC-based platforms. Now, he is the co-chief at HCE Engineering S.r.l., where he designs new hardware and software systems for the quick prototyping in industry environment, control automation, and remote monitoring.
Read more about Rodolfo Giometti

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