1 files changed, 9 insertions, 0 deletions

diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index 251fc1cd5002..3dae3f799b9b 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -32,6 +32,9 @@
 #include "control.h"
 #include "info.h"
 
+/* maximum number of devices on the AC97 bus */
+#define AC97_BUS_MAX_DEVICES    4
+
 /*
  *  AC'97 codec registers
  */
@@ -642,4 +645,10 @@ int snd_ac97_pcm_double_rate_rules(struct snd_pcm_runtime *runtime);
 /* ad hoc AC97 device driver access */
 extern struct bus_type ac97_bus_type;
 
+/* AC97 platform_data adding function */
+static inline void snd_ac97_dev_add_pdata(struct snd_ac97 *ac97, void *data)
+{
+        ac97->dev.platform_data = data;
+}
+
 #endif /* __SOUND_AC97_CODEC_H */