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Message-Id: <20210507085756.20427-4-yangbo.lu@nxp.com>
Date: Fri, 7 May 2021 16:57:53 +0800
From: Yangbo Lu <yangbo.lu@....com>
To: netdev@...r.kernel.org
Cc: Yangbo Lu <yangbo.lu@....com>,
"David S . Miller" <davem@...emloft.net>,
Richard Cochran <richardcochran@...il.com>,
Claudiu Manoil <claudiu.manoil@....com>,
Jakub Kicinski <kuba@...nel.org>
Subject: [net-next 3/6] ptp_qoriq: export ptp clock reading function for cyclecounter
Export ptp clock reading function for cyclecounter to read cycles.
Signed-off-by: Yangbo Lu <yangbo.lu@....com>
---
drivers/ptp/ptp_qoriq.c | 15 +++++++++++++++
include/linux/fsl/ptp_qoriq.h | 1 +
2 files changed, 16 insertions(+)
diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c
index 08f4cf0ad9e3..4617055a3307 100644
--- a/drivers/ptp/ptp_qoriq.c
+++ b/drivers/ptp/ptp_qoriq.c
@@ -311,6 +311,21 @@ int ptp_qoriq_enable(struct ptp_clock_info *ptp,
}
EXPORT_SYMBOL_GPL(ptp_qoriq_enable);
+u64 ptp_qoriq_clock_read(const struct cyclecounter *cc)
+{
+ struct ptp_clock_info *ptp = ptp_get_pclock_info(cc);
+ struct ptp_qoriq *ptp_qoriq = container_of(ptp, struct ptp_qoriq, caps);
+ unsigned long flags;
+ u64 ns;
+
+ spin_lock_irqsave(&ptp_qoriq->lock, flags);
+ ns = tmr_cnt_read(ptp_qoriq);
+ spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
+
+ return ns;
+}
+EXPORT_SYMBOL_GPL(ptp_qoriq_clock_read);
+
static const struct ptp_clock_info ptp_qoriq_caps = {
.owner = THIS_MODULE,
.name = "qoriq ptp clock",
diff --git a/include/linux/fsl/ptp_qoriq.h b/include/linux/fsl/ptp_qoriq.h
index 01acebe37fab..9a2ecd696c7e 100644
--- a/include/linux/fsl/ptp_qoriq.h
+++ b/include/linux/fsl/ptp_qoriq.h
@@ -193,6 +193,7 @@ int ptp_qoriq_settime(struct ptp_clock_info *ptp,
const struct timespec64 *ts);
int ptp_qoriq_enable(struct ptp_clock_info *ptp,
struct ptp_clock_request *rq, int on);
+u64 ptp_qoriq_clock_read(const struct cyclecounter *cc);
int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index, bool update_event);
#ifdef CONFIG_DEBUG_FS
void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq);
--
2.25.1
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