Implement support for the USB488 defined READ_STATUS_BYTE ioctl (1/5)
and SRQ notifications with fasync (2/5) and poll/select (3/5) in order
to be able to synchronize with variable duration instrument
operations.
Add convenience ioctl to return all device capabilities (4/5)
Add ioctls for other USB488 requests: REN_CONTROL, GOTO_LOCAL and
LOCAL_LOCKOUT. (5/5)
PATCH Changelog:
v7 - Correct command direction and add data structure for
USBTMC488_IOCTL_GET_CAPS
- Cast arg to (void __user *) earlier in ioctl call chain
- Correct type to __u8 for ioctl args to match unsigned char
in userspace, 3 places: usb488_caps, stb and val
v6 - Remove more excess newlines
Rearrange declaration blocks aesthetically
Remove __func__ parameter from dev_xxx calls
Simplify tests for interrupt-in notifications
Propagate return code from usb_submit_urb()
v5 - Remove excess newlines and parens
- Move dev variable initialisations to declaration
- Add comment on interrupt btag wrap
- simplify test in usbtmc_free_int()
v4 - Remove excess newlines and parens
- simplify some expressions
v3 - Split into multiple patches as per gregkh request
V2 - Fix V1 bug: not waking sleepers on disconnect.
- Correct sparse warnings.
V1 - Original patch
Testing:
All functions tested ok on an USBTMC-USB488 compliant oscilloscope
Dave Penkler (5):
Implement an ioctl to support the USMTMC-USB488 READ_STATUS_BYTE
operation.
Add support for USBTMC USB488 SRQ notification with fasync
Add support for receiving USBTMC USB488 SRQ notifications via
poll/select
Add ioctl to retrieve USBTMC-USB488 capabilities
Add ioctls to enable and disable local controls on an instrument
drivers/usb/class/usbtmc.c | 330 +++++++++++++++++++++++++++++++++++++++++++
include/uapi/linux/usb/tmc.h | 29 +++-
2 files changed, 356 insertions(+), 3 deletions(-)
--
2.6.3
