ptp: add kernel API ptp_get_vclocks_index()

[linux-2.6-microblaze.git] / include / linux / ptp_clock_kernel.h

diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h
index b6fb771..300a984 100644 (file)
--- a/include/linux/ptp_clock_kernel.h
+++ b/include/linux/ptp_clock_kernel.h
@@ -306,6 +306,18 @@ 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, and
+ *                           caller is responsible to free memory
+ *                           of vclock_index
+ *
+ * @pclock_index: phc index of ptp pclock.
+ * @vclock_index: pointer to pointer of vclock index.
+ *
+ * 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 +337,8 @@ static inline int ptp_schedule_worker(struct ptp_clock *ptp,
 { return -EOPNOTSUPP; }
 static inline void ptp_cancel_worker_sync(struct ptp_clock *ptp)
 { }
+static inline int ptp_get_vclocks_index(int pclock_index, int **vclock_index)
+{ return 0; }
 
 #endif