USB: add USB test and measurement class driver

This driver was originaly written by Stefan Kopp, but massively
reworked by Greg for submission.

Thanks to Felipe Balbi <me@felipebalbi.com> for lots of work in cleaning
up this driver.

Thanks to Oliver Neukum <oliver@neukum.org> for reviewing previous
versions and pointing out problems.


Cc: Stefan Kopp <stefan_kopp@agilent.com>
Cc: Marcel Janssen <korgull@home.nl>
Cc: Felipe Balbi <me@felipebalbi.com>
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 62 insertions, 0 deletions

diff --git a/Documentation/ABI/stable/sysfs-driver-usb-usbtmc b/Documentation/ABI/stable/sysfs-driver-usb-usbtmc
new file mode 100644
index 000000000000..9a75fb22187d
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-driver-usb-usbtmc
@@ -0,0 +1,62 @@
+What:           /sys/bus/usb/drivers/usbtmc/devices/*/interface_capabilities
+What:           /sys/bus/usb/drivers/usbtmc/devices/*/device_capabilities
+Date:           August 2008
+Contact:        Greg Kroah-Hartman <gregkh@suse.de>
+Description:
+                These files show the various USB TMC capabilities as described
+                by the device itself.  The full description of the bitfields
+                can be found in the USB TMC documents from the USB-IF entitled
+                "Universal Serial Bus Test and Measurement Class Specification
+                (USBTMC) Revision 1.0" section 4.2.1.8.
+
+                The files are read only.
+
+
+What:           /sys/bus/usb/drivers/usbtmc/devices/*/usb488_interface_capabilities
+What:           /sys/bus/usb/drivers/usbtmc/devices/*/usb488_device_capabilities
+Date:           August 2008
+Contact:        Greg Kroah-Hartman <gregkh@suse.de>
+Description:
+                These files show the various USB TMC capabilities as described
+                by the device itself.  The full description of the bitfields
+                can be found in the USB TMC documents from the USB-IF entitled
+                "Universal Serial Bus Test and Measurement Class, Subclass
+                USB488 Specification (USBTMC-USB488) Revision 1.0" section
+                4.2.2.
+
+                The files are read only.
+
+
+What:           /sys/bus/usb/drivers/usbtmc/devices/*/TermChar
+Date:           August 2008
+Contact:        Greg Kroah-Hartman <gregkh@suse.de>
+Description:
+                This file is the TermChar value to be sent to the USB TMC
+                device as described by the document, "Universal Serial Bus Test
+                and Measurement Class Specification
+                (USBTMC) Revision 1.0" as published by the USB-IF.
+
+                Note that the TermCharEnabled file determines if this value is
+                sent to the device or not.
+
+
+What:           /sys/bus/usb/drivers/usbtmc/devices/*/TermCharEnabled
+Date:           August 2008
+Contact:        Greg Kroah-Hartman <gregkh@suse.de>
+Description:
+                This file determines if the TermChar is to be sent to the
+                device on every transaction or not.  For more details about
+                this, please see the document, "Universal Serial Bus Test and
+                Measurement Class Specification (USBTMC) Revision 1.0" as
+                published by the USB-IF.
+
+
+What:           /sys/bus/usb/drivers/usbtmc/devices/*/auto_abort
+Date:           August 2008
+Contact:        Greg Kroah-Hartman <gregkh@suse.de>
+Description:
+                This file determines if the the transaction of the USB TMC
+                device is to be automatically aborted if there is any error.
+                For more details about this, please see the document,
+                "Universal Serial Bus Test and Measurement Class Specification
+                (USBTMC) Revision 1.0" as published by the USB-IF.