staging: ozwpan: High resolution timers

Current implementation assumes HZ = 1000 for calculating
all internal timer intervals, which creates problem on
platforms where HZ != 1000.

As well we need resolution of less than 10 mSec for heartbeat
calculation, this creates problem on some platforms where HZ is
configured as HZ = 100, or around, which restricts us to timer interval
of 10 mSec. This is particularly found on embedded devices.

This patch moves on to use high resolution timers to calculate
all timer intervals as it allows us to have very small resolution
of timer interval, removing dependency on HZ.

Signed-off-by: Rupesh Gujare <rupesh.gujare@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 10 insertions, 14 deletions

diff --git a/drivers/staging/ozwpan/ozproto.h b/drivers/staging/ozwpan/ozproto.h
index 9bb0a6a..305c532 100644
--- a/drivers/staging/ozwpan/ozproto.h
+++ b/drivers/staging/ozwpan/ozproto.h
@@ -12,20 +12,11 @@
 
 #define OZ_ALLOCATED_SPACE(__x)	(LL_RESERVED_SPACE(__x)+(__x)->needed_tailroom)
 
-/* Converts millisecs to jiffies.
- */
-#define oz_ms_to_jiffies(__x)	msecs_to_jiffies(__x)
-
-/* Quantum milliseconds.
- */
-#define OZ_QUANTUM_MS		8
-/* Quantum jiffies
- */
-#define OZ_QUANTUM_J		(oz_ms_to_jiffies(OZ_QUANTUM_MS))
+/* Quantum in MS */
+#define OZ_QUANTUM		8
 /* Default timeouts.
  */
-#define OZ_CONNECTION_TOUT_J	(2*HZ)
-#define OZ_PRESLEEP_TOUT_J	(11*HZ)
+#define OZ_PRESLEEP_TOUT	11
 
 /* Maximun sizes of tx frames. */
 #define OZ_MAX_TX_SIZE		1514
@@ -65,11 +56,16 @@ void oz_app_enable(int app_id, int enable);
 struct oz_pd *oz_pd_find(const u8 *mac_addr);
 void oz_binding_add(char *net_dev);
 void oz_binding_remove(char *net_dev);
-void oz_timer_add(struct oz_pd *pd, int type, unsigned long due_time,
-		int remove);
+void oz_timer_add(struct oz_pd *pd, int type, unsigned long due_time);
 void oz_timer_delete(struct oz_pd *pd, int type);
 void oz_pd_request_heartbeat(struct oz_pd *pd);
 void oz_polling_lock_bh(void);
 void oz_polling_unlock_bh(void);
+void oz_pd_heartbeat_handler(unsigned long data);
+void oz_pd_timeout_handler(unsigned long data);
+enum hrtimer_restart oz_pd_heartbeat_event(struct hrtimer *timer);
+enum hrtimer_restart oz_pd_timeout_event(struct hrtimer *timer);
+int oz_get_pd_status_list(char *pd_list, int max_count);
+int oz_get_binding_list(char *buf, int max_if);
 
 #endif /* _OZPROTO_H */