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[Qemu-devel] [RFC/RFT PATCH v1 1/2] audio/intel-hda: Fix Inheritance hie


From: peter . crosthwaite
Subject: [Qemu-devel] [RFC/RFT PATCH v1 1/2] audio/intel-hda: Fix Inheritance hierachy
Date: Fri, 24 May 2013 16:23:58 +1000

From: Peter Crosthwaite <address@hidden>

The ich6 and ich9 variants either need to inherit one from the other,
or both from a common base class, otherwise its not possible to create
a QOM cast macro for use by the shared implementation functions.
Went for option B, with a common base class.

Signed-off-by: Peter Crosthwaite <address@hidden>
---

 hw/audio/intel-hda.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/hw/audio/intel-hda.c b/hw/audio/intel-hda.c
index 1016af0..8a34337 100644
--- a/hw/audio/intel-hda.c
+++ b/hw/audio/intel-hda.c
@@ -189,6 +189,8 @@ struct IntelHDAState {
     uint32_t msi;
 };
 
+#define TYPE_INTEL_HDA_GENERIC "intel-hda-generic"
+
 struct IntelHDAReg {
     const char *name;      /* register name */
     uint32_t   size;       /* size in bytes */
@@ -1232,7 +1234,7 @@ static Property intel_hda_properties[] = {
     DEFINE_PROP_END_OF_LIST(),
 };
 
-static void intel_hda_class_init_common(ObjectClass *klass)
+static void intel_hda_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
@@ -1251,7 +1253,6 @@ static void intel_hda_class_init_ich6(ObjectClass *klass, 
void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 
-    intel_hda_class_init_common(klass);
     k->device_id = 0x2668;
     k->revision = 1;
     dc->desc = "Intel HD Audio Controller (ich6)";
@@ -1262,23 +1263,28 @@ static void intel_hda_class_init_ich9(ObjectClass 
*klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 
-    intel_hda_class_init_common(klass);
     k->device_id = 0x293e;
     k->revision = 3;
     dc->desc = "Intel HD Audio Controller (ich9)";
 }
 
-static const TypeInfo intel_hda_info_ich6 = {
-    .name          = "intel-hda",
+static const TypeInfo intel_hda_info = {
+    .name          = TYPE_INTEL_HDA_GENERIC,
     .parent        = TYPE_PCI_DEVICE,
     .instance_size = sizeof(IntelHDAState),
+    .class_init    = intel_hda_class_init,
+    .abstract      = true,
+};
+
+static const TypeInfo intel_hda_info_ich6 = {
+    .name          = "intel-hda",
+    .parent        = TYPE_INTEL_HDA_GENERIC,
     .class_init    = intel_hda_class_init_ich6,
 };
 
 static const TypeInfo intel_hda_info_ich9 = {
     .name          = "ich9-intel-hda",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(IntelHDAState),
+    .parent        = TYPE_INTEL_HDA_GENERIC,
     .class_init    = intel_hda_class_init_ich9,
 };
 
-- 
1.8.3.rc1.44.gb387c77.dirty




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