The working group "VISA for Linux" of the IVI Foundation specifies common rules, shared libraries and
drivers to implement the specification of "VPP-4.3: The VISA Library"
on Linux to be compatible with implementations on other operating systems.

The USBTMC protocol is part of the "VISA Library" that is used by many
popular T&M applications.

An initial implementation for Linux based on libusb has been created.
While functional it has some drawbacks:
- Performance
- Requires root privileges to reclaim devices already claimed by
  the usbtmc driver

The following collaborative patches meet the requirements of the IVI
Foundation to implement the library based on the usbtmc driver.

Improvements in the data transfer rate of over 130 MByte/s for
usb 3.x connections have been measured.

Guido Kiener, Dave Penkler, Steve Bayless (12):
 01 Remove rigol_quirk
 02 Support Read Status Byte with SRQ per file handle
 03 Add ioctls to set/get usb timeout
 04 Add ioctls for trigger, EOM bit, TermChar
 05 Add ioctl for generic requests on control pipe
 06 Add vendor specific/asynchronous read/write ioctls
 07 Add ioctl USBTMC488_IOCTL_WAIT_SRQ
 08 Optimize read/write and add ioctls for auto_abort
 10 Add test functions to set HALT Feature (Stall)
 11 Add ioctls to  abort with specific tags
 12 Add ioctl to return API version of usbtmc driver 
 Documentation/ioctl/ioctl-number.txt |    2 +-
 drivers/usb/class/usbtmc.c           | 1951 +++++++++++++++++++++-----
 include/uapi/linux/usb/tmc.h         |   60 +
 3 files changed, 1628 insertions(+), 385 deletions(-)


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