Subject: [PATCH 067/104] ASoC: dapm - Add DAPM stream completion event.

In preparation for ASoC DSP support.

This adds a callback function to be called at the completion of a DAPM stream
event.

This can be used by DSP components to perform calculations based on DAPM graphs.

Signed-off-by: Liam Girdwood <lrg@ti.com>

4 files changed, 14 insertions, 0 deletions

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index e09505c5a49..122e7a24ab3 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -518,6 +518,8 @@ struct snd_soc_dapm_context {
         enum snd_soc_bias_level target_bias_level;
         struct list_head list;
 
+        int (*stream_event)(struct snd_soc_dapm_context *dapm);
+
 #ifdef CONFIG_DEBUG_FS
         struct dentry *debugfs_dapm;
 #endif
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 6ce8dc32a3d..e52a2fae146 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -634,6 +634,9 @@ struct snd_soc_codec_driver {
         void (*seq_notifier)(struct snd_soc_dapm_context *,
                              enum snd_soc_dapm_type, int);
 
+        /* codec stream completion event */
+        int (*stream_event)(struct snd_soc_dapm_context *dapm);
+
         /* probe ordering - for components with runtime dependencies */
         int probe_order;
         int remove_order;
@@ -661,6 +664,9 @@ struct snd_soc_platform_driver {
         /* platform stream ops */
         struct snd_pcm_ops *ops;
 
+        /* platform stream completion event */
+        int (*stream_event)(struct snd_soc_dapm_context *dapm);
+
         /* probe ordering - for components with runtime dependencies */
         int probe_order;
         int remove_order;
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 52888b5e91d..726d24076e8 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3141,6 +3141,7 @@ int snd_soc_register_platform(struct device *dev,
         platform->driver = platform_drv;
         platform->dapm.dev = dev;
         platform->dapm.platform = platform;
+        platform->dapm.stream_event = platform_drv->stream_event;
 
         mutex_lock(&client_mutex);
         list_add(&platform->list, &platform_list);
@@ -3253,6 +3254,7 @@ int snd_soc_register_codec(struct device *dev,
         codec->dapm.dev = dev;
         codec->dapm.codec = codec;
         codec->dapm.seq_notifier = codec_drv->seq_notifier;
+        codec->dapm.stream_event = codec_drv->stream_event;
         codec->dev = dev;
         codec->driver = codec_drv;
         codec->num_dai = num_dai;
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 5d477dbd40c..5c103436a8d 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2603,6 +2603,10 @@ static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm,
         }
 
         dapm_power_widgets(dapm, event);
+
+        /* do we need to notify any clients that DAPM stream is complete */
+        if (dapm->stream_event)
+                dapm->stream_event(dapm);
 }
 
 /**