netdev - [PATCH 1/3] ptp: add PTP_PEROUT_REVERSE

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Date:   Mon, 20 Dec 2021 14:08:57 +0200
From:   "Radu Pirea (NXP OSS)" <radu-nicolae.pirea@....nxp.com>
To:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     christian.herber@....com, andrew@...n.ch, hkallweit1@...il.com,
        linux@...linux.org.uk, davem@...emloft.net, kuba@...nel.org,
        "Radu Pirea (NXP OSS)" <radu-nicolae.pirea@....nxp.com>
Subject: [PATCH 1/3] ptp: add PTP_PEROUT_REVERSE_POLARITY flag

Some ptp controllers may be able to reverse the polarity of the periodic
output signal. Using the PTP_PEROUT_REVERSE_POLARITY flag we can tell the
drivers to reverse the polarity of the signal.

Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@....nxp.com>
---
 include/uapi/linux/ptp_clock.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/ptp_clock.h b/include/uapi/linux/ptp_clock.h
index 1d108d597f66..34bc4ff89341 100644
--- a/include/uapi/linux/ptp_clock.h
+++ b/include/uapi/linux/ptp_clock.h
@@ -56,13 +56,15 @@
 #define PTP_PEROUT_ONE_SHOT		(1<<0)
 #define PTP_PEROUT_DUTY_CYCLE		(1<<1)
 #define PTP_PEROUT_PHASE		(1<<2)
+#define PTP_PEROUT_REVERSE_POLARITY	(1<<3)
 
 /*
  * flag fields valid for the new PTP_PEROUT_REQUEST2 ioctl.
  */
 #define PTP_PEROUT_VALID_FLAGS		(PTP_PEROUT_ONE_SHOT | \
 					 PTP_PEROUT_DUTY_CYCLE | \
-					 PTP_PEROUT_PHASE)
+					 PTP_PEROUT_PHASE | \
+					 PTP_PEROUT_REVERSE_POLARITY)
 
 /*
  * No flags are valid for the original PTP_PEROUT_REQUEST ioctl
-- 
2.34.1