USB Type-C DisplayPort Alternate Mode Driver Coming To Linux 4.19
Written by Michael Larabel in Linux Kernel on 10 July 2018 at 01:56 AM EDT. 10 Comments
LINUX KERNEL --
The USB Type-C DisplayPort Alternate Mode driver will be coming to the Linux 4.19 kernel.

Intel developers have been working on a USB Type-C DisplayPort Alternate Mode support for the mainline Linux kernel so it can play nicely with hardware supporting DP displays/adapters over the USB Type-C interface.

That work is now ready for mainline with USB subsystem maintainer Greg Kroah-Hartman pulling the USB Type-C DisplayPort Alternate Mode support into his usb-next Git branch of material that will end up landing in Linux 4.19.

The new driver is called typec_displayport and is toggled via the TYPEC_DP_ALTMODE Kconfig build switch.

While it's an accomplishment, Red Hat's Hans de Goede did clarify what still needs to happen as well is in the kernel mode-setting (KMS) code for the GPU to enumerate the connected DisplayPort device(s) connected via Type-C. Whether that DRM/KMS side code lands for Linux 4.19 remains to be seen. Additionally, some USB Type-C hardware already handles the alternate mode setup itself within its firmware.
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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 10,000 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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