[ALSA] soc - Add device level DAPM event

Added a device level dapm event so that both the machine and codec are informed
when dapm events occur.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

2 files changed, 34 insertions, 12 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 94075256638c..bd656db347ee 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -288,15 +288,16 @@ static void close_delayed_work(struct work_struct *work)
                 if (codec_dai->pop_wait == 1) {
 
                         codec_dai->pop_wait = 0;
-                        snd_soc_dapm_stream_event(codec, codec_dai->playback.stream_name,
+                        snd_soc_dapm_stream_event(codec,
+                                codec_dai->playback.stream_name,
                                 SND_SOC_DAPM_STREAM_STOP);
 
                         /* power down the codec power domain if no longer active */
                         if (codec->active == 0) {
                                 dbg("pop wq D3 %s %s\n", codec->name,
                                         codec_dai->playback.stream_name);
-                                if (codec->dapm_event)
-                                        codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot);
+                                snd_soc_dapm_device_event(socdev,
+                                        SNDRV_CTL_POWER_D3hot);
                         }
                 }
         }
@@ -352,12 +353,12 @@ static int soc_codec_close(struct snd_pcm_substream *substream)
         } else {
                 /* capture streams can be powered down now */
                 snd_soc_dapm_stream_event(codec,
-                        codec_dai->capture.stream_name, SND_SOC_DAPM_STREAM_STOP);
+                        codec_dai->capture.stream_name,
+                        SND_SOC_DAPM_STREAM_STOP);
 
-                if (codec->active == 0 && codec_dai->pop_wait == 0){
-                        if (codec->dapm_event)
-                                codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot);
-                }
+                if (codec->active == 0 && codec_dai->pop_wait == 0)
+                        snd_soc_dapm_device_event(socdev,
+                                                SNDRV_CTL_POWER_D3hot);
         }
 
         mutex_unlock(&pcm_mutex);
@@ -432,8 +433,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
                 /* no delayed work - do we need to power up codec */
                 if (codec->dapm_state != SNDRV_CTL_POWER_D0) {
 
-                        if (codec->dapm_event)
-                                codec->dapm_event(codec, SNDRV_CTL_POWER_D1);
+                        snd_soc_dapm_device_event(socdev,  SNDRV_CTL_POWER_D1);
 
                         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
                                 snd_soc_dapm_stream_event(codec,
@@ -444,8 +444,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
                                         codec_dai->capture.stream_name,
                                         SND_SOC_DAPM_STREAM_START);
 
-                        if (codec->dapm_event)
-                                codec->dapm_event(codec, SNDRV_CTL_POWER_D0);
+                        snd_soc_dapm_device_event(socdev, SNDRV_CTL_POWER_D0);
                         if (codec_dai->dai_ops.digital_mute)
                                 codec_dai->dai_ops.digital_mute(codec_dai, 0);
 
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 3b8f94af7e27..16ebb60ed3d4 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1279,6 +1279,29 @@ int snd_soc_dapm_stream_event(struct snd_soc_codec *codec,
 EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event);
 
 /**
+ * snd_soc_dapm_device_event - send a device event to the dapm core
+ * @socdev: audio device
+ * @event: device event
+ *
+ * Sends a device event to the dapm core. The core then makes any
+ * necessary machine or codec power changes..
+ *
+ * Returns 0 for success else error.
+ */
+int snd_soc_dapm_device_event(struct snd_soc_device *socdev, int event)
+{
+        struct snd_soc_codec *codec = socdev->codec;
+        struct snd_soc_machine *machine = socdev->machine;
+
+        if (machine->dapm_event)
+                                machine->dapm_event(machine, event);
+        if (codec->dapm_event)
+                                codec->dapm_event(codec, event);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_device_event);
+
+/**
  * snd_soc_dapm_set_endpoint - set audio endpoint status
  * @codec: audio codec
  * @endpoint: audio signal endpoint (or start point)