[PATCH v2 5/6] hw/isa/piix4: QOM'ify PIIX4 PM creation

[Bernhard Beschow <shentey@gmail.com>]

Just like the real hardware, create the PIIX4 ACPI controller as part of
the PIIX4 southbridge. This also mirrors how the IDE and USB functions
are already created.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
---
 hw/isa/piix4.c                | 14 +++++++-------
 hw/mips/malta.c               |  3 ++-
 include/hw/southbridge/piix.h |  2 +-
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/hw/isa/piix4.c b/hw/isa/piix4.c
index 4968c69da9..1645f63450 100644
--- a/hw/isa/piix4.c
+++ b/hw/isa/piix4.c
@@ -206,6 +206,7 @@ static void piix4_realize(PCIDevice *dev, Error **errp)
     PIIX4State *s = PIIX4_PCI_DEVICE(dev);
     PCIDevice *pci;
     PCIBus *pci_bus = pci_get_bus(dev);
+    I2CBus *smbus;
     ISABus *isa_bus;
     qemu_irq *i8259_out_irq;
 
@@ -252,6 +253,11 @@ static void piix4_realize(PCIDevice *dev, Error **errp)
     /* USB */
     pci_create_simple(pci_bus, dev->devfn + 2, "piix4-usb-uhci");
 
+    /* ACPI controller */
+    smbus = piix4_pm_init(pci_bus, pci->devfn + 3, 0x1100, s->isa[9],
+                          NULL, 0, NULL);
+    object_property_add_const_link(OBJECT(s), "smbus", OBJECT(smbus));
+
     pci_bus_irqs(pci_bus, piix4_set_irq, pci_slot_get_pirq, s, PIIX_NUM_PIRQS);
 }
 
@@ -301,7 +307,7 @@ static void piix4_register_types(void)
 
 type_init(piix4_register_types)
 
-DeviceState *piix4_create(PCIBus *pci_bus, I2CBus **smbus)
+DeviceState *piix4_create(PCIBus *pci_bus)
 {
     PCIDevice *pci;
     DeviceState *dev;
@@ -311,11 +317,5 @@ DeviceState *piix4_create(PCIBus *pci_bus, I2CBus **smbus)
                                           TYPE_PIIX4_PCI_DEVICE);
     dev = DEVICE(pci);
 
-    if (smbus) {
-        *smbus = piix4_pm_init(pci_bus, devfn + 3, 0x1100,
-                               qdev_get_gpio_in_named(dev, "isa", 9),
-                               NULL, 0, NULL);
-    }
-
     return dev;
 }
diff --git a/hw/mips/malta.c b/hw/mips/malta.c
index e446b25ad0..b0fc84ccbb 100644
--- a/hw/mips/malta.c
+++ b/hw/mips/malta.c
@@ -1399,8 +1399,9 @@ void mips_malta_init(MachineState *machine)
     empty_slot_init("GT64120", 0, 0x20000000);
 
     /* Southbridge */
-    dev = piix4_create(pci_bus, &smbus);
+    dev = piix4_create(pci_bus);
     isa_bus = ISA_BUS(qdev_get_child_bus(dev, "isa.0"));
+    smbus = I2C_BUS(qdev_get_child_bus(dev, "smbus"));
 
     /* Interrupt controller */
     qdev_connect_gpio_out_named(dev, "intr", 0, i8259_irq);
diff --git a/include/hw/southbridge/piix.h b/include/hw/southbridge/piix.h
index 0bec7f8ca3..2c21359efa 100644
--- a/include/hw/southbridge/piix.h
+++ b/include/hw/southbridge/piix.h
@@ -76,6 +76,6 @@ DECLARE_INSTANCE_CHECKER(PIIX3State, PIIX3_PCI_DEVICE,
 
 PIIX3State *piix3_create(PCIBus *pci_bus);
 
-DeviceState *piix4_create(PCIBus *pci_bus, I2CBus **smbus);
+DeviceState *piix4_create(PCIBus *pci_bus);
 
 #endif
-- 
2.36.1