static snd_pcm_uframes_t wmt_pdm_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct audio_stream_a *prtd = runtime->private_data;
int stream_id = substream->pstr->stream;
struct audio_stream_a *s = &prtd[stream_id];
dma_addr_t ptr;
snd_pcm_uframes_t offset = 0;
//DBG_DETAIL();
ptr = wmt_get_dma_pos(s->dmach);
/*
if (((runtime->channels == 1) && (runtime->format == SNDRV_PCM_FORMAT_S16_LE)) ||
((runtime->channels == 2) && (runtime->format == SNDRV_PCM_FORMAT_U8))) {
offset = bytes_to_frames(runtime, (ptr - dump_buf[stream_id].addr) >> 1);
}
else if ((runtime->channels == 1) && (runtime->format == SNDRV_PCM_FORMAT_U8)) {
offset = bytes_to_frames(runtime, (ptr - dump_buf[stream_id].addr) >> 2);
}
else if ((runtime->channels == 2) && (runtime->format == SNDRV_PCM_FORMAT_FLOAT)) {
offset = bytes_to_frames(runtime, (ptr - dump_buf[stream_id].addr) << 1);
}
else if ((runtime->channels == 1) && (runtime->format == SNDRV_PCM_FORMAT_FLOAT)) {
offset = bytes_to_frames(runtime, ptr - dump_buf[stream_id].addr);
}
else
offset = bytes_to_frames(runtime, ptr - runtime->dma_addr);
*/
if (((runtime->channels == 2) && (runtime->format == SNDRV_PCM_FORMAT_S16_LE)) ||
((runtime->channels == 1) && (runtime->format == SNDRV_PCM_FORMAT_S16_LE))) {
offset = bytes_to_frames(runtime, ptr - runtime->dma_addr);
}
if (offset >= runtime->buffer_size)
offset = 0;
spin_lock(&s->dma_lock);
if (s->periods > 0 && s->periods < 2) {
if (stream_id == SNDRV_PCM_STREAM_PLAYBACK) {
if (snd_pcm_playback_hw_avail(runtime) >= 2 * runtime->period_size)
audio_process_dma(s);
}
else {
if (snd_pcm_capture_hw_avail(runtime) >= 2* runtime->period_size)
audio_process_dma(s);
}
}
spin_unlock(&s->dma_lock);
//DPRINTK("offset = %x", (unsigned int)offset);
return offset;
}
static snd_pcm_uframes_t wmt_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct audio_stream_a *prtd = runtime->private_data;
int stream_id = substream->pstr->stream;
struct audio_stream_a *s = &prtd[stream_id];
dma_addr_t ptr;
snd_pcm_uframes_t offset = 0;
//DBG_DETAIL();
ptr = wmt_get_dma_pos(s->dmach);
#ifdef CONFIG_SND_WMT_SOC_I2S
if (!strcmp(wmt_dai_name, "i2s")) {
if (((runtime->channels == 1) && (runtime->format == SNDRV_PCM_FORMAT_S16_LE)) ||
((runtime->channels == 2) && (runtime->format == SNDRV_PCM_FORMAT_U8))) {
offset = bytes_to_frames(runtime, (ptr - dump_buf[stream_id].addr) >> 1);
}
else if ((runtime->channels == 1) && (runtime->format == SNDRV_PCM_FORMAT_U8)) {
