From e4341623a3b87e7eca87d42b7b88da967cd21c49 Mon Sep 17 00:00:00 2001
From: Peter Maydell <peter.maydell@linaro.org>
Date: Fri, 19 Feb 2021 14:45:35 +0000
Subject: clock: Add ClockPreUpdate callback event type
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Add a new callback event type ClockPreUpdate, which is called on
period changes before the period is updated.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Reviewed-by: Hao Wu <wuhaotsh@google.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210219144617.4782-3-peter.maydell@linaro.org
---
 include/hw/clock.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/hw')

diff --git a/include/hw/clock.h b/include/hw/clock.h
index 282a37f7c5..2ba44e1442 100644
--- a/include/hw/clock.h
+++ b/include/hw/clock.h
@@ -30,6 +30,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(Clock, CLOCK)
  */
 typedef enum ClockEvent {
     ClockUpdate = 1, /* Clock period has just updated */
+    ClockPreUpdate = 2, /* Clock period is about to update */
 } ClockEvent;
 
 typedef void ClockCallback(void *opaque, ClockEvent event);
-- 
cgit 1.4.1