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authorRichard Cochran <richardcochran@gmail.com>2019-11-14 10:45:02 -0800
committerDavid S. Miller <davem@davemloft.net>2019-11-15 12:48:32 -0800
commit6138e687c7b679da08c0feb55a88f448f7890c07 (patch)
tree5fa29b3639962a57b0b0e7e81690311ff2b06710 /include
parent592025a03b34927f35852058c933ffcd7c500321 (diff)
ptp: Introduce strict checking of external time stamp options.
User space may request time stamps on rising edges, falling edges, or both. However, the particular mode may or may not be supported in the hardware or in the driver. This patch adds a "strict" flag that tells drivers to ensure that the requested mode will be honored. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/uapi/linux/ptp_clock.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/uapi/linux/ptp_clock.h b/include/uapi/linux/ptp_clock.h
index 304059b1609d..9dc9d0079e98 100644
--- a/include/uapi/linux/ptp_clock.h
+++ b/include/uapi/linux/ptp_clock.h
@@ -31,6 +31,7 @@
#define PTP_ENABLE_FEATURE (1<<0)
#define PTP_RISING_EDGE (1<<1)
#define PTP_FALLING_EDGE (1<<2)
+#define PTP_STRICT_FLAGS (1<<3)
#define PTP_EXTTS_EDGES (PTP_RISING_EDGE | PTP_FALLING_EDGE)
/*
@@ -38,7 +39,8 @@
*/
#define PTP_EXTTS_VALID_FLAGS (PTP_ENABLE_FEATURE | \
PTP_RISING_EDGE | \
- PTP_FALLING_EDGE)
+ PTP_FALLING_EDGE | \
+ PTP_STRICT_FLAGS)
/*
* flag fields valid for the original PTP_EXTTS_REQUEST ioctl.