Move the initialisation of the keyboard and mouse memory regions to lasips2_init()
and expose them as SysBus memory regions.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Helge Deller <deller@gmx.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220624134109.881989-42-mark.cave-ayland@ilande.co.uk>
---
 hw/input/lasips2.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/hw/input/lasips2.c b/hw/input/lasips2.c
index 85da4081e3..8d3a2d88e8 100644
--- a/hw/input/lasips2.c
+++ b/hw/input/lasips2.c
@@ -265,20 +265,30 @@ LASIPS2State *lasips2_initfn(MemoryRegion *address_space,
     s->kbd.dev = ps2_kbd_init(lasips2_port_set_irq, &s->kbd);
     s->mouse.dev = ps2_mouse_init(lasips2_port_set_irq, &s->mouse);
 
-    memory_region_init_io(&s->kbd.reg, NULL, &lasips2_reg_ops, &s->kbd,
-                          "lasips2-kbd", 0x100);
     memory_region_add_subregion(address_space, base, &s->kbd.reg);
 
-    memory_region_init_io(&s->mouse.reg, NULL, &lasips2_reg_ops, &s->mouse,
-                          "lasips2-mouse", 0x100);
     memory_region_add_subregion(address_space, base + 0x100, &s->mouse.reg);
 
     return s;
 }
 
+static void lasips2_init(Object *obj)
+{
+    LASIPS2State *s = LASIPS2(obj);
+
+    memory_region_init_io(&s->kbd.reg, obj, &lasips2_reg_ops, &s->kbd,
+                          "lasips2-kbd", 0x100);
+    memory_region_init_io(&s->mouse.reg, obj, &lasips2_reg_ops, &s->mouse,
+                          "lasips2-mouse", 0x100);
+
+    sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->kbd.reg);
+    sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mouse.reg);
+}
+
 static const TypeInfo lasips2_info = {
     .name          = TYPE_LASIPS2,
     .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_init = lasips2_init,
     .instance_size = sizeof(LASIPS2State)
 };
 
-- 
2.30.2