ASoC: dapm - Add DAPM stream completion event.

In preparation for Dynamic PCM (AKA 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
after completion of stream events.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index e0583b7..350b1b3 100644 (file)
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -524,6 +524,8 @@ 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, int event);
+
 #ifdef CONFIG_DEBUG_FS
        struct dentry *debugfs_dapm;
 #endif

diff --git a/include/sound/soc.h b/include/sound/soc.h
index aa19f5a..64a9dd5 100644 (file)
--- 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, int event);
+
        /* probe ordering - for components with runtime dependencies */
        int probe_order;
        int remove_order;
@@ -669,6 +672,9 @@ 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, int event);
+
        /* 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 83ad8ca..9d3935b 100644 (file)
--- 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 7e15914..612a2a2 100644 (file)
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2604,6 +2604,10 @@ 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, event);
 }
 
 /**