static int omap_mcbsp_dai_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *cpu_dai)
{
struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai);
int err = 0, play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
mcbsp_data->active++;
omap_mcbsp_start(mcbsp_data->bus_id, play, !play);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
omap_mcbsp_stop(mcbsp_data->bus_id, play, !play);
mcbsp_data->active--;
break;
default:
err = -EINVAL;
}
return err;
}
static int omap_mcbsp_dai_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *cpu_dai)
{
struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai);
int err = 0, play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
mcbsp_data->active++;
omap_mcbsp_start(mcbsp_data->bus_id, play, !play);
#ifdef C_OPP_PATCH
/*
* Hold min latency constraint. Deeper states
* MPU RET/OFF is overhead and consume more power than
* savings.
* snd_hw_latency check takes care of playback and capture
* usecase.
*/
if (!snd_hw_latency++) {
pm_qos_update_request(&pm_qos_handle,
SET_MPU_CORE_CONSTRAINT);
}
#endif
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
#ifdef C_OPP_PATCH
/* remove latency constraint */
snd_hw_latency--;
if (!snd_hw_latency) {
pm_qos_update_request(&pm_qos_handle,
CLEAR_MPU_CORE_CONSTRAINT);
}
#endif
omap_mcbsp_stop(mcbsp_data->bus_id, play, !play);
mcbsp_data->active--;
break;
default:
err = -EINVAL;
}
return err;
}
static int omap_mcbsp_dai_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *cpu_dai)
{
struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai);
int err = 0, play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
mcbsp_data->active++;
omap_mcbsp_start(mcbsp_data->bus_id, play, !play);
if( !play ){ // Sometimes, TX channel is broken. So, I check TX status for 3s, and when TX underflow is occured, I recover McBSP TX channel.
spin_lock(&mcbsp_data->tx_retry_spinlock);
mcbsp_data->retry_cnt = 0;
mcbsp_data->tx_retry_timer.function = mcbsp_retry_timer_expiry;
mcbsp_data->tx_retry_timer.data = mcbsp_data;
mcbsp_data->tx_retry_timer.expires = jiffies + msecs_to_jiffies(OMAP_MCBSP_TX_RETRY_GAP);
add_timer(&mcbsp_data->tx_retry_timer);
spin_unlock(&mcbsp_data->tx_retry_spinlock);
}
break;
case SNDRV_PCM_TRIGGER_STOP:
// TEMPTEMP FOR DEBUGGING!!!
s_buffer[s_buffer_cnt] = omap_mcbsp_get_irqstatus(mcbsp_data->bus_id);
s_id[s_buffer_cnt] = mcbsp_data->bus_id;
s_buffer_cnt = (s_buffer_cnt+1)%1024;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
spin_lock(&mcbsp_data->tx_retry_spinlock);
del_timer(&mcbsp_data->tx_retry_timer);
spin_unlock(&mcbsp_data->tx_retry_spinlock);
omap_mcbsp_stop(mcbsp_data->bus_id, play, !play);
mcbsp_data->active--;
break;
default:
err = -EINVAL;
}
return err;
}
static int omap_mcbsp_dai_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_dai *cpu_dai = rtd->dai->cpu_dai;
struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
int err = 0, play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
switch (cmd) {
case SNDRV_PCM_TRIGGER_RESUME:
omap_mcbsp_config(mcbsp_data->bus_id, &mcbsp_data->regs);
/* fall through */
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (cpu_dai->active)
omap_mcbsp_dai_set_clks_src(mcbsp_data,
mcbsp_data->clk_id);
omap_mcbsp_start(mcbsp_data->bus_id, play, !play);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
mcbsp_data->tx_active = 1;
else
mcbsp_data->rx_active = 1;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
if (cpu_dai->active)
omap_mcbsp_dai_set_clks_src(mcbsp_data,
OMAP_MCBSP_SYSCLK_CLKS_FCLK);
omap_mcbsp_stop(mcbsp_data->bus_id, play, !play);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
mcbsp_data->tx_active = 0;
else
mcbsp_data->rx_active = 0;
break;
default:
err = -EINVAL;
}
return err;
}
/*
* HW interface start and stop helper functions
*/
static int audio_ifc_start(void)
{
omap_mcbsp_start(AUDIO_MCBSP);
return 0;
}