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

Product typeBook
Published inJan 2021
PublisherPackt
ISBN-139781789342048
Edition1st Edition
Concepts
Embedded Systems
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John Madieu
John Madieu
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John Madieu

John Madieu is an embedded Linux and kernel engineer living in Paris, France. His main activities consist of developing device drivers and Board Support Packages (BSPs) for companies in domains such as IoT, automation, transport, healthcare, energy, and the military. John is the founder and chief consultant at LABCSMART, a company that provides training and services for embedded Linux and Linux kernel engineering. He is an open source and embedded systems enthusiast, convinced that it is only by sharing knowledge that we can learn more. He is passionate about boxing, which he practiced for 6 years professionally, and continues to channel this passion through training sessions that he provides voluntarily.
Read more about John Madieu

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The concept of power management on Linux-based systems

Power management (PM) entails consuming as little power as possible at any time. There are two types of power management that the operating system must handle: Device Power Management and System Power Management.

  • Device Power Management: This is device specific. It allows a device to be put in a low-power state while the system is running. This may allow, among other things, part of the device not currently in use to be turned off in order to conserve power, such as the keyboard backlight when you are not typing. Individual device power management may be invoked explicitly on devices regardless of the power management activity, or may happen automatically after a device has been idle for a set amount of time. Device power management is an alias for the so-called Runtime Power Management.
  • System Power Management, also known as Sleep States: This enables platforms to enter a system-wide low-power state. In other words...
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Mastering Linux Device Driver Development
Published in: Jan 2021Publisher: PacktISBN-13: 9781789342048
© 2021 Packt Publishing Limited All Rights Reserved

Author (1)

author image
John Madieu

John Madieu is an embedded Linux and kernel engineer living in Paris, France. His main activities consist of developing device drivers and Board Support Packages (BSPs) for companies in domains such as IoT, automation, transport, healthcare, energy, and the military. John is the founder and chief consultant at LABCSMART, a company that provides training and services for embedded Linux and Linux kernel engineering. He is an open source and embedded systems enthusiast, convinced that it is only by sharing knowledge that we can learn more. He is passionate about boxing, which he practiced for 6 years professionally, and continues to channel this passion through training sessions that he provides voluntarily.
Read more about John Madieu

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