1 files changed, 26 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index bbbc83b387d1..5587d416229f 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -640,6 +640,16 @@ struct hda_codec_preset {
         int (*patch)(struct hda_codec *codec);
 };
         
+struct hda_codec_preset_list {
+        const struct hda_codec_preset *preset;
+        struct module *owner;
+        struct list_head list;
+};
+
+/* initial hook */
+int snd_hda_add_codec_preset(struct hda_codec_preset_list *preset);
+int snd_hda_delete_codec_preset(struct hda_codec_preset_list *preset);
+
 /* ops set by the preset patch */
 struct hda_codec_ops {
         int (*build_controls)(struct hda_codec *codec);
@@ -733,6 +743,7 @@ struct hda_codec {
 
         /* detected preset */
         const struct hda_codec_preset *preset;
+        struct module *owner;
         const char *name;       /* codec name */
         const char *modelname;  /* model name for preset */
 
@@ -896,4 +907,19 @@ static inline void snd_hda_power_down(struct hda_codec *codec) {}
 #define snd_hda_codec_needs_resume(codec) 1
 #endif
 
+/*
+ * Codec modularization
+ */
+
+/* Export symbols only for communication with codec drivers;
+ * When built in kernel, all HD-audio drivers are supposed to be statically
+ * linked to the kernel.  Thus, the symbols don't have to (or shouldn't) be
+ * exported unless it's built as a module.
+ */
+#ifdef MODULE
+#define EXPORT_SYMBOL_HDA(sym) EXPORT_SYMBOL_GPL(sym)
+#else
+#define EXPORT_SYMBOL_HDA(sym)
+#endif
+
 #endif /* __SOUND_HDA_CODEC_H */