diff options
| author | Guido Kiener <guido@kiener-muenchen.de> | 2018-07-18 11:45:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-21 09:22:15 +0300 |
| commit | 048c6d88a0214757926f264823829e79154fcd4f (patch) | |
| tree | f2ed756ff671eb19c82bcbe731e3d6ca6885de50 /include/uapi/linux/usb/tmc.h | |
| parent | 19e6c57e96169cb3275fd40b7898454560b9ebba (diff) | |
| download | linux-048c6d88a0214757926f264823829e79154fcd4f.tar.xz | |
usb: usbtmc: Add ioctls to set/get usb timeout
Add ioctls USBTMC_IOCTL_GET_TIMEOUT / USBTMC_IOCTL_SET_TIMEOUT to
get/set I/O timeout for specific file handle.
Different operations on an instrument can take different lengths of
time thus it is important to be able to set the timeout slightly
longer than the expected duration of each operation to optimise the
responsiveness of the application. As the instrument may be shared by
multiple applications the timeout should be settable on a per file
descriptor basis.
Tested-by: Dave Penkler <dpenkler@gmail.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Dave Penkler <dpenkler@gmail.com>
Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/usb/tmc.h')
| -rw-r--r-- | include/uapi/linux/usb/tmc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/usb/tmc.h b/include/uapi/linux/usb/tmc.h index 03f6adc8f35b..a89ffc33532e 100644 --- a/include/uapi/linux/usb/tmc.h +++ b/include/uapi/linux/usb/tmc.h @@ -16,6 +16,8 @@ #ifndef __LINUX_USB_TMC_H #define __LINUX_USB_TMC_H +#include <linux/types.h> /* __u8 etc */ + /* USB TMC status values */ #define USBTMC_STATUS_SUCCESS 0x01 #define USBTMC_STATUS_PENDING 0x02 @@ -46,6 +48,8 @@ #define USBTMC_IOCTL_ABORT_BULK_IN _IO(USBTMC_IOC_NR, 4) #define USBTMC_IOCTL_CLEAR_OUT_HALT _IO(USBTMC_IOC_NR, 6) #define USBTMC_IOCTL_CLEAR_IN_HALT _IO(USBTMC_IOC_NR, 7) +#define USBTMC_IOCTL_GET_TIMEOUT _IOR(USBTMC_IOC_NR, 9, __u32) +#define USBTMC_IOCTL_SET_TIMEOUT _IOW(USBTMC_IOC_NR, 10, __u32) #define USBTMC488_IOCTL_GET_CAPS _IOR(USBTMC_IOC_NR, 17, unsigned char) #define USBTMC488_IOCTL_READ_STB _IOR(USBTMC_IOC_NR, 18, unsigned char) #define USBTMC488_IOCTL_REN_CONTROL _IOW(USBTMC_IOC_NR, 19, unsigned char) |