[PATCH 19/40] lasips2: move keyboard port initialisation to new lasips2_kbd_port_init() function

[Mark Cave-Ayland]

Move the initialisation of the keyboard port from lasips2_init() to
a new lasips2_kbd_port_init() function which will be invoked using
object_initialize_child() during the LASIPS2 device init.

Update LASIPS2State so that it now holds the new LASIPS2KbdPort child object and
ensure that it is realised in lasips2_realize().

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 hw/input/lasips2.c         | 47 ++++++++++++++++++++++++++------------
 include/hw/input/lasips2.h |  2 +-
 2 files changed, 34 insertions(+), 15 deletions(-)

diff --git a/hw/input/lasips2.c b/hw/input/lasips2.c
index f70cf893f6..74427c9990 100644
--- a/hw/input/lasips2.c
+++ b/hw/input/lasips2.c
@@ -40,9 +40,9 @@ static const VMStateDescription vmstate_lasips2 = {
     .version_id = 0,
     .minimum_version_id = 0,
     .fields = (VMStateField[]) {
-        VMSTATE_UINT8(kbd.control, LASIPS2State),
-        VMSTATE_UINT8(kbd.id, LASIPS2State),
-        VMSTATE_BOOL(kbd.irq, LASIPS2State),
+        VMSTATE_UINT8(kbd_port.parent_obj.control, LASIPS2State),
+        VMSTATE_UINT8(kbd_port.parent_obj.id, LASIPS2State),
+        VMSTATE_BOOL(kbd_port.parent_obj.irq, LASIPS2State),
         VMSTATE_UINT8(mouse.control, LASIPS2State),
         VMSTATE_UINT8(mouse.id, LASIPS2State),
         VMSTATE_BOOL(mouse.irq, LASIPS2State),
@@ -119,8 +119,8 @@ static const char *lasips2_write_reg_name(uint64_t addr)
 
 static void lasips2_update_irq(LASIPS2State *s)
 {
-    trace_lasips2_intr(s->kbd.irq | s->mouse.irq);
-    qemu_set_irq(s->irq, s->kbd.irq | s->mouse.irq);
+    trace_lasips2_intr(s->kbd_port.parent_obj.irq | s->mouse.irq);
+    qemu_set_irq(s->irq, s->kbd_port.parent_obj.irq | s->mouse.irq);
 }
 
 static void lasips2_reg_write(void *opaque, hwaddr addr, uint64_t val,
@@ -211,7 +211,7 @@ static uint64_t lasips2_reg_read(void *opaque, hwaddr addr, 
unsigned size)
             }
         }
 
-        if (port->parent->kbd.irq || port->parent->mouse.irq) {
+        if (port->parent->kbd_port.parent_obj.irq || port->parent->mouse.irq) {
             ret |= LASIPS2_STATUS_CMPINTR;
         }
         break;
@@ -240,7 +240,7 @@ static const MemoryRegionOps lasips2_reg_ops = {
 static void lasips2_set_kbd_irq(void *opaque, int n, int level)
 {
     LASIPS2State *s = LASIPS2(opaque);
-    LASIPS2Port *port = &s->kbd;
+    LASIPS2Port *port = LASIPS2_PORT(&s->kbd_port);
 
     port->irq = level;
     lasips2_update_irq(port->parent);
@@ -258,9 +258,15 @@ static void lasips2_set_mouse_irq(void *opaque, int n, int 
level)
 static void lasips2_realize(DeviceState *dev, Error **errp)
 {
     LASIPS2State *s = LASIPS2(dev);
+    LASIPS2Port *lp;
 
-    s->kbd.ps2dev = ps2_kbd_init();
-    qdev_connect_gpio_out(DEVICE(s->kbd.ps2dev), PS2_DEVICE_IRQ,
+    lp = LASIPS2_PORT(&s->kbd_port);
+    if (!(qdev_realize(DEVICE(lp), NULL, errp))) {
+        return;
+    }
+
+    lp->ps2dev = ps2_kbd_init();
+    qdev_connect_gpio_out(DEVICE(lp->ps2dev), PS2_DEVICE_IRQ,
                           qdev_get_gpio_in_named(dev, "ps2-kbd-input-irq",
                                                  0));
     s->mouse.ps2dev = ps2_mouse_init();
@@ -272,18 +278,19 @@ static void lasips2_realize(DeviceState *dev, Error 
**errp)
 static void lasips2_init(Object *obj)
 {
     LASIPS2State *s = LASIPS2(obj);
+    LASIPS2Port *lp;
+
+    object_initialize_child(obj, "lasips2-kbd-port", &s->kbd_port,
+                            TYPE_LASIPS2_KBD_PORT);
 
-    s->kbd.id = 0;
     s->mouse.id = 1;
-    s->kbd.parent = s;
     s->mouse.parent = s;
 
-    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);
+    lp = LASIPS2_PORT(&s->kbd_port);
+    sysbus_init_mmio(SYS_BUS_DEVICE(obj), &lp->reg);
     sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mouse.reg);
 
     sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq);
@@ -318,10 +325,22 @@ static const TypeInfo lasips2_port_info = {
     .abstract      = true,
 };
 
+static void lasips2_kbd_port_init(Object *obj)
+{
+    LASIPS2KbdPort *s = LASIPS2_KBD_PORT(obj);
+    LASIPS2Port *lp = LASIPS2_PORT(obj);
+
+    memory_region_init_io(&lp->reg, obj, &lasips2_reg_ops, lp, "lasips2-kbd",
+                          0x100);
+    lp->id = 0;
+    lp->parent = container_of(s, LASIPS2State, kbd_port);
+}
+
 static const TypeInfo lasips2_kbd_port_info = {
     .name          = TYPE_LASIPS2_KBD_PORT,
     .parent        = TYPE_LASIPS2_PORT,
     .instance_size = sizeof(LASIPS2KbdPort),
+    .instance_init = lasips2_kbd_port_init,
 };
 
 static const TypeInfo lasips2_mouse_port_info = {
diff --git a/include/hw/input/lasips2.h b/include/hw/input/lasips2.h
index aab6a3500c..f728f54c78 100644
--- a/include/hw/input/lasips2.h
+++ b/include/hw/input/lasips2.h
@@ -60,7 +60,7 @@ struct LASIPS2MousePort {
 struct LASIPS2State {
     SysBusDevice parent_obj;
 
-    LASIPS2Port kbd;
+    LASIPS2KbdPort kbd_port;
     LASIPS2Port mouse;
     qemu_irq irq;
 };
-- 
2.30.2