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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>
This commit is contained in:
Liam Girdwood 2011-07-25 11:15:15 +01:00 committed by Mark Brown
parent a0c27ab242
commit 64a648c220
4 changed files with 14 additions and 0 deletions
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2
include/sound/soc-dapm.h
View File

@ -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

6
include/sound/soc.h
View File

@ -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;

2
sound/soc/soc-core.c
View File

@ -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;

4
sound/soc/soc-dapm.c
View File

@ -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);
}
/**