Patches Ready For Getting DisplayPort Over USB Type-C Working For More Intel Hardware
Written by Michael Larabel in Hardware on 21 August 2021 at 08:51 AM EDT. 7 Comments
HARDWARE --
Red Hat's Hans de Goede continues doing a commendable job improving the Linux support for various laptops with key improvements. One of the latest efforts by this longtime kernel developer has been about getting DisplayPort over USB Type-C connections working for more Intel hardware.

Hans de Goede announced on Friday that his patch-set around out-of-band hotplug notification is now ready for mainlining for the Linux kernel's Direct Rendering Manager subsystem and specific wiring up for the Intel driver.

While out-of-band hotplug notification may not sound like an exciting topic for end-users, this infrastructure is necessary for getting DisplayPort over Type-C connections working on various devices.

Primarily for some older devices like some tablets/2-in-1s from the Intel Cherry Trail era, this infrastructure is needed to get DisplayPort display output working via Type-C for the event handling and switching over the data lines between USB and DP. This builds on top of the Linux kernel support around DisplayPort Alt-Mode handling previously added to the kernel's USB Type-C code.

See this pull request for more details on the functionality.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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