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authorYangbo Lu <yangbo.lu@nxp.com>2019-01-21 18:41:42 +0800
committerDavid S. Miller <davem@davemloft.net>2019-01-22 20:21:57 -0800
commit19df7510d5cf077c2e88a7690fb7617e6d341beb (patch)
tree8f1c49592e7b63d60ff65a299078a6192005f8af /include
parent47205e2985d9338ccdb5ffc84147260ed7864015 (diff)
ptp: add debugfs support for ptp_qoriq
This patch is to add debugfs support for ptp_qoriq. Current debugfs supports to control fiper1/fiper2 loopback mode. If the loopback mode is enabled, the fiper1/fiper2 pulse is looped back into trigger1/ trigger2 input. This is very useful for validating hardware and driver without external hardware. Below is an example to enable fiper1 loopback. echo 1 > /sys/kernel/debug/2d10e00.ptp_clock/fiper1-loopback Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/fsl/ptp_qoriq.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/fsl/ptp_qoriq.h b/include/linux/fsl/ptp_qoriq.h
index 43b4b442f6a4..94e9797e434c 100644
--- a/include/linux/fsl/ptp_qoriq.h
+++ b/include/linux/fsl/ptp_qoriq.h
@@ -143,6 +143,8 @@ struct qoriq_ptp {
struct ptp_clock *clock;
struct ptp_clock_info caps;
struct resource *rsrc;
+ struct dentry *debugfs_root;
+ struct device *dev;
bool extts_fifo_support;
int irq;
int phc_index;
@@ -169,4 +171,14 @@ static inline void qoriq_write(unsigned __iomem *addr, u32 val)
iowrite32be(val, addr);
}
+#ifdef CONFIG_DEBUG_FS
+void ptp_qoriq_create_debugfs(struct qoriq_ptp *qoriq_ptp);
+void ptp_qoriq_remove_debugfs(struct qoriq_ptp *qoriq_ptp);
+#else
+static inline void ptp_qoriq_create_debugfs(struct qoriq_ptp *qoriq_ptp)
+{ }
+static inline void ptp_qoriq_remove_debugfs(struct qoriq_ptp *qoriq_ptp)
+{ }
+#endif
+
#endif