1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Linux Begins To Support Windows 8 Multi-Touch

Hardware

Published on 13 December 2012 07:03 PM EST
Written by Michael Larabel in Hardware
10 Comments

The Linux 3.8 kernel is beginning work on supporting Microsoft's Windows 8 multi-touch protocol.

The HID (Human Interface Device) pull for the Linux 3.8 merge window was submitted and taken today by Linus Torvalds. One of the prominent additions to the Linux 3.8 HID support is working on the Windows 8 multi-touch protocol support. The changes with the Windows 8 multi-touch include:

Support T and C for win8 devices - "Win8 input specification clarifies the X and Y sent by devices. It distincts the position where the user wants to Touch (T) from the center of the ellipsoide (C). This patch enable supports for this distinction in hid-multitouch. We recognize Win8 certified devices from their vendor feature 0xff0000c5 where Microsoft put a signed blob in the report to check if the device passed the certification."

hid-multitouch: fix Win 8 protocol - "Win 8 specification is much more precise than the Win 7 one.
Moreover devices that need to take certification must be submitted to Microsoft. The result is a better protocol support and we can rely on that to skip all the messy tests we used to do. The protocol specify the fact that each valid touch must be reported within a frame, and that the release touch coordinate must be the same than the last known touch. So we can use the always_valid quirk and dismiss reports when we touch coordiante do not follow this rule."

This Windows 8 multi-touch work for the Linux kernel was done by Benjamin Tissoires.

Also worthy of calling attention to with this HID pull is support for HID over the I2C bus, an ION iCade driver, and support for new Roccat devices. The Roccat work for Linux 3.8 includes support for the Roccat Lua gaming mouse, reading out the Kone Plus sensor register data, support for the Kone XTD mouse, Savu/Kone Plus device reset support, and cleaning up various other Roccat driver bits.

Roccat is worthwhile for being acknowledged for since they are one of the few gaming peripheral companies that at the moment officially supports Linux. Most of the leading game peripheral vendors (keyboard, mouse, joystick, etc) don't officially support Linux drivers/user-space software at this time and leave it up to the community and independent users for assembling the support for these gaming products. Fortunately, in 2013, we're likely to see a dramatic shift in this area as gaming peripheral vendors begin to become interested by Valve's Linux-based Steam gaming console where Linux support will obviously be mandated.

The Linux 3.8 HID pull request can be found on the kernel mailing list.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  2. Intel 120GB 530 Series SSD Linux Performance
  3. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
  4. AMD's Windows Catalyst Driver Remains Largely Faster Than Linux Drivers
Latest Linux Articles
  1. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
  2. Is The Open-Source NVIDIA Driver Fast Enough For Steam On Linux Gaming?
  3. Linux 3.18 File-System Performance Minimally Changed But Possible Regressions
  4. AMD Radeon Gallium3D Is Catching Up & Sometimes Beating Catalyst On Linux
Latest Linux News
  1. Scientific Linux 6.6 vs. Scientific Linux 7.0 Benchmarks
  2. Qualcomm Looks To Get Into The ARM Server Business
  3. HHVM 3.4 Adds New Features, Support
  4. More Radeon Driver Changes Queued For Linux 3.19
  5. Unigine 2.0 Alpha 2 Adds C# Support
  6. FFmpeg Is Returning To Ubuntu With 15.04 Release
  7. Linux Version Of Civilization: Beyond Earth Still Coming Along
  8. Yahoo To Become Default Search Provider For Firefox
  9. Better Fan Control Support Coming To The Open-Source Radeon Driver
  10. PTS 5.4 Milestone 6 Released - Official "Lipki" Release Is Near
Latest Forum Discussions
  1. Debian Developer Resigns From The Systemd Maintainership Team
  2. Debian Init System Coupling Vote Results
  3. Updated and Optimized Ubuntu Free Graphics Drivers
  4. Ubuntu Developers Still Thinking What To Do About Adobe Flash Support
  5. How to get rid of Linux
  6. how to configure module phoromatic ?
  7. Major Performance Breakthrough Discovered For Intel's Mesa Driver
  8. Script for Fan Speed Control