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From: Yangbo Lu <yangbo.lu@nxp.com>
To: netdev@vger.kernel.org
Cc: Yangbo Lu <yangbo.lu@nxp.com>,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	mptcp@lists.linux.dev, Richard Cochran <richardcochran@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Mat Martineau <mathew.j.martineau@linux.intel.com>,
	Matthieu Baerts <matthieu.baerts@tessares.net>,
	Shuah Khan <shuah@kernel.org>, Michal Kubecek <mkubecek@suse.cz>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Andrew Lunn <andrew@lunn.ch>, Rui Sousa <rui.sousa@nxp.com>,
	Sebastien Laveze <sebastien.laveze@nxp.com>
Subject: [net-next, v3, 04/10] ptp: add kernel API ptp_get_vclocks_index()
Date: Tue, 15 Jun 2021 17:45:11 +0800	[thread overview]
Message-ID: <20210615094517.48752-5-yangbo.lu@nxp.com> (raw)
In-Reply-To: <20210615094517.48752-1-yangbo.lu@nxp.com>

Add kernel API ptp_get_vclocks_index() to get all ptp
vclocks index on pclock.

This is preparation for supporting ptp vclocks info query
through ethtool.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v3:
	- Added this patch.
---
 drivers/ptp/ptp_clock.c          |  3 ++-
 drivers/ptp/ptp_private.h        |  2 ++
 drivers/ptp/ptp_vclock.c         | 24 ++++++++++++++++++++++++
 include/linux/ptp_clock_kernel.h | 12 ++++++++++++
 4 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c
index 38842a76acf8..88e43451b062 100644
--- a/drivers/ptp/ptp_clock.c
+++ b/drivers/ptp/ptp_clock.c
@@ -24,10 +24,11 @@
 #define PTP_PPS_EVENT PPS_CAPTUREASSERT
 #define PTP_PPS_MODE (PTP_PPS_DEFAULTS | PPS_CANWAIT | PPS_TSFMT_TSPEC)
 
+struct class *ptp_class;
+
 /* private globals */
 
 static dev_t ptp_devt;
-static struct class *ptp_class;
 
 static DEFINE_IDA(ptp_clocks_map);
 
diff --git a/drivers/ptp/ptp_private.h b/drivers/ptp/ptp_private.h
index 5671710ca0fa..16b7ba583ddd 100644
--- a/drivers/ptp/ptp_private.h
+++ b/drivers/ptp/ptp_private.h
@@ -91,6 +91,8 @@ static inline bool ptp_guaranteed_pclock(struct ptp_clock *ptp)
 	return false;
 }
 
+extern struct class *ptp_class;
+
 /*
  * see ptp_chardev.c
  */
diff --git a/drivers/ptp/ptp_vclock.c b/drivers/ptp/ptp_vclock.c
index b8f500677314..8944b4fe32d8 100644
--- a/drivers/ptp/ptp_vclock.c
+++ b/drivers/ptp/ptp_vclock.c
@@ -152,3 +152,27 @@ void ptp_vclock_unregister(struct ptp_vclock *vclock)
 	ptp_clock_unregister(vclock->clock);
 	kfree(vclock);
 }
+
+int ptp_get_vclocks_index(int pclock_index, int *vclock_index)
+{
+	char name[PTP_CLOCK_NAME_LEN] = "";
+	struct ptp_clock *ptp;
+	struct device *dev;
+	int num = 0;
+
+	if (pclock_index < 0)
+		return num;
+
+	snprintf(name, PTP_CLOCK_NAME_LEN, "ptp%d", pclock_index);
+	dev = class_find_device_by_name(ptp_class, name);
+	if (!dev)
+		return num;
+
+	ptp = dev_get_drvdata(dev);
+	num = ptp->n_vclocks;
+	memcpy(vclock_index, ptp->vclock_index, sizeof(int) * ptp->n_vclocks);
+	put_device(dev);
+
+	return num;
+}
+EXPORT_SYMBOL(ptp_get_vclocks_index);
diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h
index af12cc1e76d7..37f49d3e761e 100644
--- a/include/linux/ptp_clock_kernel.h
+++ b/include/linux/ptp_clock_kernel.h
@@ -306,6 +306,16 @@ int ptp_schedule_worker(struct ptp_clock *ptp, unsigned long delay);
  */
 void ptp_cancel_worker_sync(struct ptp_clock *ptp);
 
+/**
+ * ptp_get_vclocks_index() - get all vclocks index on pclock
+ *
+ * @pclock_index: phc index of ptp pclock.
+ * @vclock_index: pointer to phc index of ptp vclocks.
+ *
+ * return number of vclocks.
+ */
+int ptp_get_vclocks_index(int pclock_index, int *vclock_index);
+
 #else
 static inline struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info,
 						   struct device *parent)
@@ -325,6 +335,8 @@ static inline int ptp_schedule_worker(struct ptp_clock *ptp,
 { return -EOPNOTSUPP; }
 static inline void ptp_cancel_worker_sync(struct ptp_clock *ptp)
 { }
+static int ptp_get_vclocks_index(int pclock_index, int *vclock_index)
+{ return 0; }
 
 #endif
 
-- 
2.25.1


  parent reply	other threads:[~2021-06-15  9:36 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-15  9:45 [net-next, v3, 00/10] ptp: support virtual clocks and timestamping Yangbo Lu
2021-06-15  9:45 ` [net-next, v3, 01/10] ptp: add ptp virtual clock driver framework Yangbo Lu
2021-06-17 17:32   ` Richard Cochran
2021-06-22 10:17     ` Y.b. Lu
2021-06-15  9:45 ` [net-next, v3, 02/10] ptp: support ptp physical/virtual clocks conversion Yangbo Lu
2021-06-17 17:42   ` Richard Cochran
2021-06-22 10:18     ` Y.b. Lu
2021-06-17 18:27   ` Richard Cochran
2021-06-22 10:35     ` Y.b. Lu
2021-06-25 11:09       ` Y.b. Lu
2021-06-19  4:06   ` Richard Cochran
2021-06-22 10:39     ` Y.b. Lu
2021-06-15  9:45 ` [net-next, v3, 03/10] ptp: track available ptp vclocks information Yangbo Lu
2021-06-15  9:45 ` Yangbo Lu [this message]
2021-06-15  9:45 ` [net-next, v3, 05/10] ethtool: add a new command for getting PHC virtual clocks Yangbo Lu
2021-06-15 19:49   ` Jakub Kicinski
2021-06-22 10:10     ` Y.b. Lu
2021-06-15 23:24   ` Michal Kubecek
2021-06-22 10:10     ` Y.b. Lu
2021-06-15  9:45 ` [net-next, v3, 06/10] ptp: add kernel API ptp_convert_timestamp() Yangbo Lu
2021-06-15  9:45 ` [net-next, v3, 07/10] net: sock: extend SO_TIMESTAMPING for PHC binding Yangbo Lu
2021-06-16  1:00   ` Mat Martineau
2021-06-22 10:14     ` Y.b. Lu
2021-06-16 10:27   ` kernel test robot
2021-06-16 10:39   ` kernel test robot
2021-06-15  9:45 ` [net-next, v3, 08/10] net: socket: support hardware timestamp conversion to PHC bound Yangbo Lu
2021-06-15  9:45 ` [net-next, v3, 09/10] selftests/net: timestamping: support binding PHC Yangbo Lu
2021-06-15  9:45 ` [net-next, v3, 10/10] MAINTAINERS: add entry for PTP virtual clock driver Yangbo Lu

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