1 files changed, 66 insertions, 0 deletions
diff --git a/hw/audio/intel-hda.h b/hw/audio/intel-hda.h
new file mode 100644
index 00000000..f78c1833
--- /dev/null
+++ b/hw/audio/intel-hda.h
@@ -0,0 +1,66 @@
+#ifndef HW_INTEL_HDA_H
+#define HW_INTEL_HDA_H
+
+#include "hw/qdev-core.h"
+#include "qom/object.h"
+
+/* --------------------------------------------------------------------- */
+/* hda bus                                                               */
+
+#define TYPE_HDA_CODEC_DEVICE "hda-codec"
+OBJECT_DECLARE_TYPE(HDACodecDevice, HDACodecDeviceClass,
+                    HDA_CODEC_DEVICE)
+
+#define TYPE_HDA_BUS "HDA"
+OBJECT_DECLARE_SIMPLE_TYPE(HDACodecBus, HDA_BUS)
+
+
+typedef void (*hda_codec_response_func)(HDACodecDevice *dev,
+                                        bool solicited, uint32_t response);
+typedef bool (*hda_codec_xfer_func)(HDACodecDevice *dev,
+                                    uint32_t stnr, bool output,
+                                    uint8_t *buf, uint32_t len);
+
+struct HDACodecBus {
+    BusState qbus;
+    uint32_t next_cad;
+    hda_codec_response_func response;
+    hda_codec_xfer_func xfer;
+};
+
+struct HDACodecDeviceClass {
+    DeviceClass parent_class;
+
+    int (*init)(HDACodecDevice *dev);
+    void (*exit)(HDACodecDevice *dev);
+    void (*command)(HDACodecDevice *dev, uint32_t nid, uint32_t data);
+    void (*stream)(HDACodecDevice *dev, uint32_t stnr, bool running, bool output);
+};
+
+struct HDACodecDevice {
+    DeviceState         qdev;
+    uint32_t            cad;    /* codec address */
+};
+
+void hda_codec_bus_init(DeviceState *dev, HDACodecBus *bus, size_t bus_size,
+                        hda_codec_response_func response,
+                        hda_codec_xfer_func xfer);
+HDACodecDevice *hda_codec_find(HDACodecBus *bus, uint32_t cad);
+
+void hda_codec_response(HDACodecDevice *dev, bool solicited, uint32_t response);
+bool hda_codec_xfer(HDACodecDevice *dev, uint32_t stnr, bool output,
+                    uint8_t *buf, uint32_t len);
+
+/* --------------------------------------------------------------------- */
+
+#define dprint(_dev, _level, _fmt, ...)                                 \
+    do {                                                                \
+        if (_dev->debug >= _level) {                                    \
+            fprintf(stderr, "%s: ", _dev->name);                        \
+            fprintf(stderr, _fmt, ## __VA_ARGS__);                      \
+        }                                                               \
+    } while (0)
+
+/* --------------------------------------------------------------------- */
+
+#endif