static int msm_pcm_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct msm_audio *prtd = runtime->private_data;
struct audmgr_config cfg;
int rc;
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->samp_rate = convert_samp_rate(runtime->rate);
prtd->samp_rate_index = convert_dsp_samp_index(runtime->rate);
prtd->channel_mode = (runtime->channels - 1);
prtd->buffer_size = prtd->channel_mode ? STEREO_DATA_SIZE : \
MONO_DATA_SIZE;
if (prtd->enabled == 1)
return 0;
prtd->type = AUDREC_CMD_TYPE_0_INDEX_WAV;
cfg.tx_rate = convert_samp_rate(runtime->rate);
cfg.rx_rate = RPC_AUD_DEF_SAMPLE_RATE_NONE;
cfg.def_method = RPC_AUD_DEF_METHOD_RECORD;
cfg.codec = RPC_AUD_DEF_CODEC_PCM;
cfg.snd_method = RPC_SND_METHOD_MIDI;
rc = audmgr_enable(&prtd->audmgr, &cfg);
if (rc < 0)
return rc;
if (msm_adsp_enable(prtd->audpre)) {
audmgr_disable(&prtd->audmgr);
return -ENODEV;
}
if (msm_adsp_enable(prtd->audrec)) {
msm_adsp_disable(prtd->audpre);
audmgr_disable(&prtd->audmgr);
return -ENODEV;
}
prtd->enabled = 1;
alsa_rec_dsp_enable(prtd, 1);
return 0;
}
int alsa_audrec_disable(struct msm_audio *prtd)
{
if (prtd->enabled) {
mutex_lock(&the_locks.lock);
prtd->enabled = 0;
alsa_rec_dsp_enable(prtd, 0);
wake_up(&the_locks.read_wait);
msm_adsp_disable(prtd->audpre);
msm_adsp_disable(prtd->audrec);
audmgr_disable(&prtd->audmgr);
prtd->out_needed = 0;
prtd->opened = 0;
mutex_unlock(&the_locks.lock);
}
return 0;
}
