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authorGuido Kiener <guido@kiener-muenchen.de>2018-09-12 11:50:59 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-09-20 14:04:02 +0300
commit8409e96f012a777ad9ca2050d567d766e43ec343 (patch)
tree345d6495d0d6b359efbda43f7821cd501cdf57a9 /include/uapi/linux/usb
parent739240a9f6ac4d4c841081029874b3521744e490 (diff)
downloadlinux-8409e96f012a777ad9ca2050d567d766e43ec343.tar.xz
usb: usbtmc: add ioctl USBTMC_IOCTL_MSG_IN_ATTR
add ioctl USBTMC_IOCTL_MSG_IN_ATTR that returns the specific bmTransferAttributes field of the last DEV_DEP_MSG_IN Bulk-IN header. This header is received by the read() function. The meaning of the (u8) bitmap bmTransferAttributes is: Bit 0 = EOM flag is set when the last transfer of a USBTMC message is received. Bit 1 = is set when the last byte is a termchar (e.g. '\n'). Note that this bit is always zero when the device does not support the termchar feature or when termchar detection is not enabled (see ioctl USBTMC_IOCTL_CONFIG_TERMCHAR). 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.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/usb/tmc.h b/include/uapi/linux/usb/tmc.h
index e228ad7fc141..55ca365b66d4 100644
--- a/include/uapi/linux/usb/tmc.h
+++ b/include/uapi/linux/usb/tmc.h
@@ -98,6 +98,8 @@ struct usbtmc_message {
#define USBTMC488_IOCTL_TRIGGER _IO(USBTMC_IOC_NR, 22)
#define USBTMC488_IOCTL_WAIT_SRQ _IOW(USBTMC_IOC_NR, 23, __u32)
+#define USBTMC_IOCTL_MSG_IN_ATTR _IOR(USBTMC_IOC_NR, 24, __u8)
+
/* Cancel and cleanup asynchronous calls */
#define USBTMC_IOCTL_CANCEL_IO _IO(USBTMC_IOC_NR, 35)
#define USBTMC_IOCTL_CLEANUP_IO _IO(USBTMC_IOC_NR, 36)