The working group "VISA for Linux" of the IVI Foundation www.ivifoundation.org 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. Initial implementations for Linux based on libusb has been created. However using one common USBTMC driver results in more benefits: - Multiple applications can share access to the same instruments. - The driver handles SRQ conflicts. - Simplifies definition of udev rules for USBTMC devices. - Simplifies development of applications using T&M instruments. 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 (29): 01 Support Read Status Byte with SRQ per file 02 Use consistent timeout error 03 Add ioctls to set/get usb timeout 04 Add ioctl for trigger 05 Add ioctl for EOM bit 06 Add ioctl for termination character 07 Add support for 32 bit compat applications 08 Add ioctl for generic requests on control 09 Add ioctl for vendor specific write 10 Add ioctl USBTMC_IOCTL_WRITE_RESULT 11 Add ioctl for vendor specific read 12 Add ioctl USBTMC_IOCTL_CANCEL_IO 13 Add ioctl USBTMC_IOCTL_CLEANUP_IO 14 Fix suspend/resume 15 Add ioctl USBTMC488_IOCTL_WAIT_SRQ 16 Add ioctl USBTMC_IOCTL_MSG_IN_ATTR 17 Add ioctl USBTMC_IOCTL_AUTO_ABORT 18 Optimize usbtmc_write 19 Optimize usbtmc_read 20 Fix ioctl USBTMC_IOCTL_CLEAR 21 Fix ioctl USBTMC_IOCTL_ABORT_BULK_IN 22 Fix ioctl USBTMC_IOCTL_ABORT_BULK_OUT 23 Replace USBTMC_TIMEOUT macros for control messages 24 Add ioctl USBTMC_IOCTL_API_VERSION 25 Update ioctl-number.txt 26 Remove redundant code 27 Remove redundant macro USBTMC_SIZE_IOBUFFER 28 Fix split quoted string in debug message 29 Remove sysfs group TermChar and auto_abort .../ABI/stable/sysfs-driver-usb-usbtmc | 35 - Documentation/ioctl/ioctl-number.txt | 2 +- drivers/usb/class/usbtmc.c | 2111 +++++++++++++---- include/uapi/linux/usb/tmc.h | 54 + 4 files changed, 1730 insertions(+), 472 deletions(-) -- 2.17.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
