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authorPeter Maydell <peter.maydell@linaro.org>2021-01-29 15:40:09 +0000
committerPeter Maydell <peter.maydell@linaro.org>2021-02-15 13:16:12 +0000
commit168ebc00e72c686aea046ec3b993610ff678e9dc (patch)
tree05aae25b6b6568ce30550449ef116b53aba44f45 /hw
parentb7878f38a00806c221c51001509329105f48af1f (diff)
downloadqemu-arm-168ebc00e72c686aea046ec3b993610ff678e9dc.tar.gz
clock: Add ClockPreUpdate callback event type
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>
Diffstat (limited to 'hw')
-rw-r--r--hw/core/clock.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/core/clock.c b/hw/core/clock.c
index 4479eff145..fc5a99683f 100644
--- a/hw/core/clock.c
+++ b/hw/core/clock.c
@@ -81,6 +81,9 @@ static void clock_propagate_period(Clock *clk, bool call_callbacks)
QLIST_FOREACH(child, &clk->children, sibling) {
if (child->period != clk->period) {
+ if (call_callbacks) {
+ clock_call_callback(child, ClockPreUpdate);
+ }
child->period = clk->period;
trace_clock_update(CLOCK_PATH(child), CLOCK_PATH(clk),
CLOCK_PERIOD_TO_HZ(clk->period),