static int mmp_sspa_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct sspa_priv *sspa_priv = snd_soc_dai_get_drvdata(dai);
struct ssp_device *sspa = sspa_priv->sspa;
int ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
/*
* whatever playback or capture, must enable rx.
* this is a hw issue, so need check if rx has been
* enabled or not; if has been enabled by another
* stream, do not enable again.
*/
if (!sspa_priv->running_cnt)
mmp_sspa_rx_enable(sspa);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
mmp_sspa_tx_enable(sspa);
sspa_priv->running_cnt++;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
sspa_priv->running_cnt--;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
mmp_sspa_tx_disable(sspa);
/* have no capture stream, disable rx port */
if (!sspa_priv->running_cnt)
mmp_sspa_rx_disable(sspa);
break;
default:
ret = -EINVAL;
}
return ret;
}
static int mmp_sspa_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct sspa_priv *sspa_priv = snd_soc_dai_get_drvdata(dai);
struct ssp_device *sspa = sspa_priv->sspa;
int ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
mmp_sspa_tx_enable(sspa);
else
mmp_sspa_rx_enable(sspa);
sspa_priv->running_cnt++;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
sspa_priv->running_cnt--;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
mmp_sspa_tx_disable(sspa);
else
mmp_sspa_rx_disable(sspa);
break;
default:
ret = -EINVAL;
}
return ret;
}