From: Adrian Alonso <aalonso@freescale.com>
Date: Mon, 14 May 2012 23:48:27 +0000 (-0500)
Subject: ENGR00209384-1 mxc_spdif: add trigger handler function
X-Git-Tag: v3.0.35-fsl~1033
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=293f09b631ca73b2110648618d7b890220f21b84;p=karo-tx-linux.git

ENGR00209384-1 mxc_spdif: add trigger handler function

* Add trigger function in order to handle user
  space events start/stop/pause playback/capture

Signed-off-by: Adrian Alonso <aalonso@freescale.com>
---

diff --git a/sound/soc/codecs/mxc_spdif.c b/sound/soc/codecs/mxc_spdif.c
index 613caf633fae..8c163fbd7c7d 100644
--- a/sound/soc/codecs/mxc_spdif.c
+++ b/sound/soc/codecs/mxc_spdif.c
@@ -633,6 +633,33 @@ static int mxc_spdif_playback_shutdown(struct snd_pcm_substream *substream,
 	return 0;
 }
 
+static int mxc_spdif_playback_trigger(struct snd_pcm_substream *substream,
+				int cmd, struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+	int ret = 0;
+
+	if (!plat_data->spdif_tx)
+		return -EINVAL;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return ret;
+}
+
 static int mxc_spdif_capture_startup(struct snd_pcm_substream *substream,
 					      struct snd_soc_dai *dai)
 {
@@ -757,6 +784,33 @@ static int mxc_spdif_capture_shutdown(struct snd_pcm_substream *substream,
 	return 0;
 }
 
+static int mxc_spdif_capture_trigger(struct snd_pcm_substream *substream,
+				int cmd, struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct mxc_spdif_priv *spdif_priv = snd_soc_codec_get_drvdata(codec);
+	struct mxc_spdif_platform_data *plat_data = spdif_priv->plat_data;
+	int ret = 0;
+
+	if (!plat_data->spdif_rx)
+		return -EINVAL;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return ret;
+}
+
 /*
  * MXC SPDIF IEC958 controller(mixer) functions
  *
@@ -1117,9 +1171,23 @@ static int mxc_spdif_prepare(struct snd_pcm_substream *substream,
 	return ret;
 }
 
+static int mxc_spdif_trigger(struct snd_pcm_substream *substream,
+				int cmd, struct snd_soc_dai *dai)
+{
+	int ret = 0;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		ret = mxc_spdif_playback_trigger(substream, cmd, dai);
+	else
+		ret = mxc_spdif_capture_trigger(substream, cmd, dai);
+
+	return ret;
+}
+
 struct snd_soc_dai_ops mxc_spdif_codec_dai_ops = {
 	.startup = mxc_spdif_startup,
 	.prepare = mxc_spdif_prepare,
+	.trigger = mxc_spdif_trigger,
 	.shutdown = mxc_spdif_shutdown,
 };