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| author |   Guido Kiener <guido@kiener-muenchen.de> | 2018-09-12 10:51:07 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-20 13:04:02 +0200 |
| commit | e013477bc20763e28d95d74e5ca97411194984ec (patch) | |
| tree | 361e18404143db913a3e5cc2ab9f8e8b42cf3612 /include/uapi/linux/usb | |
| parent | usb: usbtmc: Replace USBTMC_TIMEOUT macros for control messages (diff) | |
| download | wireguard-linux-e013477bc20763e28d95d74e5ca97411194984ec.tar.xz wireguard-linux-e013477bc20763e28d95d74e5ca97411194984ec.zip | |
usb: usbtmc: Add ioctl USBTMC_IOCTL_API_VERSION
Add ioctl USBTMC_IOCTL_API_VERSION to get current API version
of usbtmc driver.
This is to allow an instrument library to determine whether
the driver API is compatible with the implementation.
The API may change in future versions. Therefore the macro
USBTMC_API_VERSION should be incremented when changing tmc.h
with new flags, ioctls or when changing a significant behavior
of the driver.
Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/usb')
| -rw-r--r-- | include/uapi/linux/usb/tmc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/usb/tmc.h b/include/uapi/linux/usb/tmc.h index 4b36108b9cca..fdd4d88a7b95 100644 --- a/include/uapi/linux/usb/tmc.h +++ b/include/uapi/linux/usb/tmc.h @@ -89,6 +89,7 @@ struct usbtmc_message { #define USBTMC_IOCTL_WRITE _IOWR(USBTMC_IOC_NR, 13, struct usbtmc_message) #define USBTMC_IOCTL_READ _IOWR(USBTMC_IOC_NR, 14, struct usbtmc_message) #define USBTMC_IOCTL_WRITE_RESULT _IOWR(USBTMC_IOC_NR, 15, __u32) +#define USBTMC_IOCTL_API_VERSION _IOR(USBTMC_IOC_NR, 16, __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) |