1 files changed, 24 insertions, 4 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 73accbcfbd2d..bca9538d9e50 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -103,6 +103,24 @@
         .private_value = (unsigned long)&xenum }
 
 /*
+ * Bias levels
+ *
+ * @ON:      Bias is fully on for audio playback and capture operations.
+ * @PREPARE: Prepare for audio operations. Called before DAPM switching for
+ *           stream start and stop operations.
+ * @STANDBY: Low power standby state when no playback/capture operations are
+ *           in progress. NOTE: The transition time between STANDBY and ON
+ *           should be as fast as possible and no longer than 10ms.
+ * @OFF:     Power Off. No restrictions on transition times.
+ */
+enum snd_soc_bias_level {
+        SND_SOC_BIAS_ON,
+        SND_SOC_BIAS_PREPARE,
+        SND_SOC_BIAS_STANDBY,
+        SND_SOC_BIAS_OFF,
+};
+
+/*
  * Digital Audio Interface (DAI) types
  */
 #define SND_SOC_DAI_AC97        0x1
@@ -356,7 +374,8 @@ struct snd_soc_codec {
         struct mutex mutex;
 
         /* callbacks */
-        int (*dapm_event)(struct snd_soc_codec *codec, int event);
+        int (*set_bias_level)(struct snd_soc_codec *,
+                              enum snd_soc_bias_level level);
 
         /* runtime */
         struct snd_card *card;
@@ -378,8 +397,8 @@ struct snd_soc_codec {
         /* dapm */
         struct list_head dapm_widgets;
         struct list_head dapm_paths;
-        unsigned int dapm_state;
-        unsigned int suspend_dapm_state;
+        enum snd_soc_bias_level bias_level;
+        enum snd_soc_bias_level suspend_bias_level;
         struct delayed_work delayed_work;
 
         /* codec DAI's */
@@ -449,7 +468,8 @@ struct snd_soc_machine {
         int (*resume_post)(struct platform_device *pdev);
 
         /* callbacks */
-        int (*dapm_event)(struct snd_soc_machine *, int event);
+        int (*set_bias_level)(struct snd_soc_machine *,
+                              enum snd_soc_bias_level level);
 
         /* CPU <--> Codec DAI links  */
         struct snd_soc_dai_link *dai_link;