static int hdmi_audio_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
struct hdmi_codec_data *priv = snd_soc_codec_get_drvdata(codec);
int err = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
/*
* switch to no-idle to avoid DSS_L3_ICLK clock
* to be shutdown during audio activity (as per TRM)
*/
omap_hwmod_set_slave_idlemode(priv->oh,
HWMOD_IDLEMODE_NO);
hdmi_ti_4xxx_wp_audio_enable(&priv->ip_data, 1);
queue_delayed_work(priv->workqueue, &priv->delayed_work,
msecs_to_jiffies(1));
priv->active = 1;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
if (delayed_work_pending(&hdmi_data.delayed_work))
cancel_delayed_work(&hdmi_data.delayed_work);
priv->active = 0;
hdmi_ti_4xxx_audio_transfer_en(&priv->ip_data, 0);
hdmi_ti_4xxx_wp_audio_enable(&priv->ip_data, 0);
/*
* switch back to smart-idle & wakeup capable
* after audio activity stops
*/
omap_hwmod_set_slave_idlemode(priv->oh,
HWMOD_IDLEMODE_SMART_WKUP);
break;
default:
err = -EINVAL;
}
return err;
}
static void hdmi_audio_work(struct work_struct *work)
{
hdmi_ti_4xxx_audio_transfer_en(&hdmi_data.ip_data, 1);
}
