Merge tag 'iomap-5.14-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

[linux-2.6-microblaze.git] / drivers / ptp / ptp_private.h

diff --git a/drivers/ptp/ptp_private.h b/drivers/ptp/ptp_private.h
index 6b97155..dba6be4 100644 (file)
--- a/drivers/ptp/ptp_private.h
+++ b/drivers/ptp/ptp_private.h
@@ -18,6 +18,7 @@
 
 #define PTP_MAX_TIMESTAMPS 128
 #define PTP_BUF_TIMESTAMPS 30
+#define PTP_DEFAULT_MAX_VCLOCKS 20
 
 struct timestamp_event_queue {
        struct ptp_extts_event buf[PTP_MAX_TIMESTAMPS];
@@ -46,6 +47,24 @@ struct ptp_clock {
        const struct attribute_group *pin_attr_groups[2];
        struct kthread_worker *kworker;
        struct kthread_delayed_work aux_work;
+       unsigned int max_vclocks;
+       unsigned int n_vclocks;
+       int *vclock_index;
+       struct mutex n_vclocks_mux; /* protect concurrent n_vclocks access */
+       bool is_virtual_clock;
+};
+
+#define info_to_vclock(d) container_of((d), struct ptp_vclock, info)
+#define cc_to_vclock(d) container_of((d), struct ptp_vclock, cc)
+#define dw_to_vclock(d) container_of((d), struct ptp_vclock, refresh_work)
+
+struct ptp_vclock {
+       struct ptp_clock *pclock;
+       struct ptp_clock_info info;
+       struct ptp_clock *clock;
+       struct cyclecounter cc;
+       struct timecounter tc;
+       spinlock_t lock;        /* protects tc/cc */
 };
 
 /*
@@ -61,6 +80,24 @@ static inline int queue_cnt(struct timestamp_event_queue *q)
        return cnt < 0 ? PTP_MAX_TIMESTAMPS + cnt : cnt;
 }
 
+/* Check if ptp virtual clock is in use */
+static inline bool ptp_vclock_in_use(struct ptp_clock *ptp)
+{
+       bool in_use = false;
+
+       if (mutex_lock_interruptible(&ptp->n_vclocks_mux))
+               return true;
+
+       if (!ptp->is_virtual_clock && ptp->n_vclocks)
+               in_use = true;
+
+       mutex_unlock(&ptp->n_vclocks_mux);
+
+       return in_use;
+}
+
+extern struct class *ptp_class;
+
 /*
  * see ptp_chardev.c
  */
@@ -89,4 +126,6 @@ extern const struct attribute_group *ptp_groups[];
 int ptp_populate_pin_groups(struct ptp_clock *ptp);
 void ptp_cleanup_pin_groups(struct ptp_clock *ptp);
 
+struct ptp_vclock *ptp_vclock_register(struct ptp_clock *pclock);
+void ptp_vclock_unregister(struct ptp_vclock *vclock);
 #endif