hid: Change idle handling to use a timer

This leads to cleaner code in usb-hid, and removes up to a 1000 calls / sec to
qemu_get_clock_ns(vm_clock) if idle-time is set to its default value of 0.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/hw/hid.h b/hw/hid.h
index 100b121663..56c71ed5ae 100644
--- a/hw/hid.h
+++ b/hw/hid.h
@@ -43,7 +43,8 @@ struct HIDState {
     int kind;
     int32_t protocol;
     uint8_t idle;
-    int64_t next_idle_clock;
+    bool idle_pending;
+    QEMUTimer *idle_timer;
     HIDEventFunc event;
 };
 
@@ -52,7 +53,7 @@ void hid_reset(HIDState *hs);
 void hid_free(HIDState *hs);
 
 bool hid_has_events(HIDState *hs);
-void hid_set_next_idle(HIDState *hs, int64_t curtime);
+void hid_set_next_idle(HIDState *hs);
 void hid_pointer_activate(HIDState *hs);
 int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len);
 int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len);