static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct sport_device *sport = runtime->private_data;
unsigned int diff;
snd_pcm_uframes_t frames;
struct bf5xx_i2s_pcm_data *dma_data;
dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
pr_debug("%s enter\n", __func__);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
diff = sport_curr_offset_tx(sport);
} else {
diff = sport_curr_offset_rx(sport);
}
/*
* TX at least can report one frame beyond the end of the
* buffer if we hit the wraparound case - clamp to within the
* buffer as the ALSA APIs require.
*/
if (diff == snd_pcm_lib_buffer_bytes(substream))
diff = 0;
frames = bytes_to_frames(substream->runtime, diff);
if (dma_data->tdm_mode)
frames = frames * runtime->channels / 8;
return frames;
}
static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct sport_device *sport = runtime->private_data;
unsigned int diff;
snd_pcm_uframes_t frames;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
diff = sport_curr_offset_tx(sport);
frames = diff / (8*4); /* 32 bytes per frame */
} else {
diff = sport_curr_offset_rx(sport);
frames = diff / (8*4);
}
return frames;
}
static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct sport_device *sport = runtime->private_data;
unsigned int diff;
snd_pcm_uframes_t frames;
pr_debug("%s enter\n", __func__);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
diff = sport_curr_offset_tx(sport);
} else {
diff = sport_curr_offset_rx(sport);
}
if (diff == snd_pcm_lib_buffer_bytes(substream))
diff = 0;
frames = bytes_to_frames(substream->runtime, diff);
return frames;
}
static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct sport_device *sport = runtime->private_data;
unsigned int curr;
#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
curr = sport->tx_delay_pos;
else
curr = sport->rx_pos;
#else
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
curr = sport_curr_offset_tx(sport) / sizeof(struct ac97_frame);
else
curr = sport_curr_offset_rx(sport) / sizeof(struct ac97_frame);
#endif
return curr;
}
static unsigned int sport_tx_curr_frag(struct sport_device *sport)
{
return sport->tx_curr_frag = sport_curr_offset_tx(sport) /
sport->tx_fragsize;
}