netdev - [PATCH v2 net-next 2/3] ptp: ptp_clockmatrix: Add alignment of 1 PPS to idtcm_perout

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1613192766-14010-3-git-send-email-vincent.cheng.xh@renesas.com>
Date:   Sat, 13 Feb 2021 00:06:05 -0500
From:   <vincent.cheng.xh@...esas.com>
To:     <richardcochran@...il.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Vincent Cheng <vincent.cheng.xh@...esas.com>
Subject: [PATCH v2 net-next 2/3] ptp: ptp_clockmatrix: Add alignment of 1 PPS to idtcm_perout_enable.

From: Vincent Cheng <vincent.cheng.xh@...esas.com>

When enabling output using PTP_CLK_REQ_PEROUT, need to align the output
clock to the internal 1 PPS clock.

Signed-off-by: Vincent Cheng <vincent.cheng.xh@...esas.com>
Acked-by: Richard Cochran <richardcochran@...il.com>
---
 drivers/ptp/ptp_clockmatrix.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/ptp/ptp_clockmatrix.c b/drivers/ptp/ptp_clockmatrix.c
index 3de8411..a83ba4b 100644
--- a/drivers/ptp/ptp_clockmatrix.c
+++ b/drivers/ptp/ptp_clockmatrix.c
@@ -1401,13 +1401,23 @@ static int idtcm_perout_enable(struct idtcm_channel *channel,
 			       bool enable,
 			       struct ptp_perout_request *perout)
 {
+	struct idtcm *idtcm = channel->idtcm;
 	unsigned int flags = perout->flags;
+	struct timespec64 ts = {0, 0};
+	int err;
 
 	if (flags == PEROUT_ENABLE_OUTPUT_MASK)
-		return idtcm_output_mask_enable(channel, enable);
+		err = idtcm_output_mask_enable(channel, enable);
+	else
+		err = idtcm_output_enable(channel, enable, perout->index);
+
+	if (err) {
+		dev_err(&idtcm->client->dev, "Unable to set output enable");
+		return err;
+	}
 
-	/* Enable/disable individual output instead */
-	return idtcm_output_enable(channel, enable, perout->index);
+	/* Align output to internal 1 PPS */
+	return _idtcm_settime(channel, &ts, SCSR_TOD_WR_TYPE_SEL_DELTA_PLUS);
 }
 
 static int idtcm_get_pll_mode(struct idtcm_channel *channel,
-- 
2.7.4