From d94a40156b357cd519f9385ca1f57ea7850b9e18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20F=C3=A4rber?= <afaerber@suse.de>
Date: Wed, 24 Jul 2013 09:08:23 +0200
Subject: [PATCH] stellaris: QOM cast cleanup for stellaris_i2c_state
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Introduce a type constant, use QOM casts, rename the parent field and
prepare for QOM realize.

Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hw/arm/stellaris.c | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index 9a7fafb3ad..05d1a0ddc4 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -685,8 +685,13 @@ static int stellaris_sys_init(uint32_t base, qemu_irq irq,
 
 /* I2C controller.  */
 
+#define TYPE_STELLARIS_I2C "stellaris-i2c"
+#define STELLARIS_I2C(obj) \
+    OBJECT_CHECK(stellaris_i2c_state, (obj), TYPE_STELLARIS_I2C)
+
 typedef struct {
-    SysBusDevice busdev;
+    SysBusDevice parent_obj;
+
     i2c_bus *bus;
     qemu_irq irq;
     MemoryRegion iomem;
@@ -859,21 +864,22 @@ static const VMStateDescription vmstate_stellaris_i2c = {
     }
 };
 
-static int stellaris_i2c_init(SysBusDevice * dev)
+static int stellaris_i2c_init(SysBusDevice *sbd)
 {
-    stellaris_i2c_state *s = FROM_SYSBUS(stellaris_i2c_state, dev);
+    DeviceState *dev = DEVICE(sbd);
+    stellaris_i2c_state *s = STELLARIS_I2C(dev);
     i2c_bus *bus;
 
-    sysbus_init_irq(dev, &s->irq);
-    bus = i2c_init_bus(&dev->qdev, "i2c");
+    sysbus_init_irq(sbd, &s->irq);
+    bus = i2c_init_bus(dev, "i2c");
     s->bus = bus;
 
     memory_region_init_io(&s->iomem, OBJECT(s), &stellaris_i2c_ops, s,
                           "i2c", 0x1000);
-    sysbus_init_mmio(dev, &s->iomem);
+    sysbus_init_mmio(sbd, &s->iomem);
     /* ??? For now we only implement the master interface.  */
     stellaris_i2c_reset(s);
-    vmstate_register(&dev->qdev, -1, &vmstate_stellaris_i2c, s);
+    vmstate_register(dev, -1, &vmstate_stellaris_i2c, s);
     return 0;
 }
 
@@ -1244,7 +1250,7 @@ static void stellaris_init(const char *kernel_filename, const char *cpu_model,
     }
 
     if (board->dc2 & (1 << 12)) {
-        dev = sysbus_create_simple("stellaris-i2c", 0x40020000, pic[8]);
+        dev = sysbus_create_simple(TYPE_STELLARIS_I2C, 0x40020000, pic[8]);
         i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
         if (board->peripherals & BP_OLED_I2C) {
             i2c_create_slave(i2c, "ssd0303", 0x3d);
@@ -1363,7 +1369,7 @@ static void stellaris_i2c_class_init(ObjectClass *klass, void *data)
 }
 
 static const TypeInfo stellaris_i2c_info = {
-    .name          = "stellaris-i2c",
+    .name          = TYPE_STELLARIS_I2C,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(stellaris_i2c_state),
     .class_init    = stellaris_i2c_class_init,