static int msm_pcm_playback_copy(struct snd_pcm_substream *substream, int a,
snd_pcm_uframes_t hwoff, void __user *buf, snd_pcm_uframes_t frames)
{
int rc = 1;
int fbytes = 0;
struct snd_pcm_runtime *runtime = substream->runtime;
struct msm_audio *prtd = runtime->private_data;
fbytes = frames_to_bytes(runtime, frames);
rc = alsa_send_buffer(prtd, buf, fbytes, NULL);
++copy_count;
prtd->pcm_buf_pos += fbytes;
if (copy_count == 1) {
mutex_lock(&the_locks.lock);
alsa_audio_configure(prtd);
mutex_unlock(&the_locks.lock);
}
if ((prtd->running) && (msm_vol_ctl.update)) {
rc = msm_audio_volume_update(PCMPLAYBACK_DECODERID,
msm_vol_ctl.volume, msm_vol_ctl.pan);
msm_vol_ctl.update = 0;
}
return rc;
}
static int msm_pcm_playback_copy(struct snd_pcm_substream *substream, int a,
snd_pcm_uframes_t hwoff, void __user *buf, snd_pcm_uframes_t frames)
{
int rc = 1;
int fbytes = 0;
struct snd_pcm_runtime *runtime = substream->runtime;
struct msm_audio *prtd = runtime->private_data;
fbytes = frames_to_bytes(runtime, frames);
rc = alsa_send_buffer(prtd, buf, fbytes, NULL);
++copy_count;
if (copy_count == 1) {
mutex_lock(&the_locks.lock);
alsa_audio_configure(prtd);
mutex_unlock(&the_locks.lock);
}
return rc;
}
static int msm_pcm_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct msm_audio *prtd = runtime->private_data;
prtd->pcm_size = snd_pcm_lib_buffer_bytes(substream);
prtd->pcm_count = snd_pcm_lib_period_bytes(substream);
prtd->pcm_irq_pos = 0;
prtd->pcm_buf_pos = 0;
/* rate and channels are sent to audio driver */
prtd->out_sample_rate = runtime->rate;
prtd->out_channel_mode = runtime->channels;
if (prtd->enabled | !(prtd->mmap_flag))
return 0;
prtd->data = substream->dma_buffer.area;
prtd->phys = substream->dma_buffer.addr;
prtd->out[0].data = prtd->data + 0;
prtd->out[0].addr = prtd->phys + 0;
prtd->out[0].size = BUFSZ;
prtd->out[1].data = prtd->data + BUFSZ;
prtd->out[1].addr = prtd->phys + BUFSZ;
prtd->out[1].size = BUFSZ;
prtd->out[0].used = prtd->pcm_count;
prtd->out[1].used = prtd->pcm_count;
mutex_lock(&the_locks.lock);
alsa_audio_configure(prtd);
mutex_unlock(&the_locks.lock);
return 0;
}