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;
}
static long audio_in_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct audio_in *audio = file->private_data;
int rc;
if (cmd == AUDIO_GET_STATS) {
struct msm_audio_stats stats;
memset(&stats, 0, sizeof(stats));
stats.byte_count = atomic_read(&audio->in_bytes);
if (copy_to_user((void *) arg, &stats, sizeof(stats)))
return -EFAULT;
return 0;
}
mutex_lock(&audio->lock);
switch (cmd) {
case AUDIO_START:
rc = audio_in_enable(audio);
break;
case AUDIO_STOP:
rc = audio_in_disable(audio);
audio->stopped = 1;
break;
case AUDIO_FLUSH:
if (audio->stopped) {
/* Make sure we're stopped and we wake any threads
* that might be blocked holding the read_lock.
* While audio->stopped read threads will always
* exit immediately.
*/
wake_up(&audio->wait);
mutex_lock(&audio->read_lock);
audio_flush(audio);
mutex_unlock(&audio->read_lock);
}
case AUDIO_SET_CONFIG: {
struct msm_audio_config cfg;
/* The below code is to make mutual exclusive between
* AUDIO_SET_CONFIG and AUDIO_SET_STREAM_CONFIG.
* Allow any one IOCTL.
*/
if (audio->buffer_cfg_ioctl == AUDIO_SET_STREAM_CONFIG) {
rc = -EINVAL;
break;
}
if (copy_from_user(&cfg, (void *) arg, sizeof(cfg))) {
rc = -EFAULT;
break;
}
if (cfg.channel_count == 1) {
cfg.channel_count = AUDREC_CMD_STEREO_MODE_MONO;
} else if (cfg.channel_count == 2) {
cfg.channel_count = AUDREC_CMD_STEREO_MODE_STEREO;
} else {
rc = -EINVAL;
break;
}
if (cfg.type == 0) {
cfg.type = AUDREC_CMD_TYPE_0_INDEX_WAV;
} else if (cfg.type == 1) {
cfg.type = AUDREC_CMD_TYPE_0_INDEX_AAC;
} else {
rc = -EINVAL;
break;
}
audio->samp_rate = convert_samp_rate(cfg.sample_rate);
audio->samp_rate_index =
convert_dsp_samp_index(cfg.sample_rate);
audio->channel_mode = cfg.channel_count;
audio->buffer_size =
audio->channel_mode ? STEREO_DATA_SIZE
: MONO_DATA_SIZE;
audio->type = cfg.type;
audio->buffer_cfg_ioctl = AUDIO_SET_CONFIG;
rc = 0;
break;
}
case AUDIO_GET_CONFIG: {
struct msm_audio_config cfg;
cfg.buffer_size = audio->buffer_size;
cfg.buffer_count = FRAME_NUM;
cfg.sample_rate = convert_samp_index(audio->samp_rate);
if (audio->channel_mode == AUDREC_CMD_STEREO_MODE_MONO)
cfg.channel_count = 1;
else
cfg.channel_count = 2;
if (audio->type == AUDREC_CMD_TYPE_0_INDEX_WAV)
cfg.type = 0;
else
cfg.type = 1;
cfg.unused[0] = 0;
cfg.unused[1] = 0;
cfg.unused[2] = 0;
if (copy_to_user((void *) arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
else
rc = 0;
break;
}
case AUDIO_GET_STREAM_CONFIG: {
struct msm_audio_stream_config cfg;
cfg.buffer_size = audio->buffer_size;
cfg.buffer_count = FRAME_NUM;
if (copy_to_user((void *)arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
else
rc = 0;
break;
}
case AUDIO_SET_STREAM_CONFIG: {
struct msm_audio_stream_config cfg;
/* The below code is to make mutual exclusive between
* AUDIO_SET_CONFIG and AUDIO_SET_STREAM_CONFIG.
* Allow any one IOCTL.
*/
if (audio->buffer_cfg_ioctl == AUDIO_SET_CONFIG) {
rc = -EINVAL;
break;
}
if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
rc = -EFAULT;
break;
} else
rc = 0;
audio->buffer_size = cfg.buffer_size;
/* The IOCTL is only of AAC, set the encoder as AAC */
audio->type = 1;
audio->buffer_cfg_ioctl = AUDIO_SET_STREAM_CONFIG;
break;
}
case AUDIO_GET_AAC_ENC_CONFIG: {
struct msm_audio_aac_enc_config cfg;
if (audio->channel_mode == AUDREC_CMD_STEREO_MODE_MONO)
cfg.channels = 1;
else
cfg.channels = 2;
cfg.sample_rate = convert_samp_index(audio->samp_rate);
cfg.bit_rate = audio->bit_rate;
cfg.stream_format = AUDIO_AAC_FORMAT_RAW;
if (copy_to_user((void *)arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
else
rc = 0;
break;
}
case AUDIO_SET_AAC_ENC_CONFIG: {
struct msm_audio_aac_enc_config cfg;
unsigned int record_quality;
if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
rc = -EFAULT;
break;
}
if (cfg.stream_format != AUDIO_AAC_FORMAT_RAW) {
MM_ERR("unsupported AAC format\n");
rc = -EINVAL;
break;
}
record_quality = bitrate_to_record_quality(cfg.sample_rate,
cfg.channels, cfg.bit_rate);
/* Range of Record Quality Supported by DSP, Q12 format */
if ((record_quality < 0x800) || (record_quality > 0x4000)) {
MM_ERR("Unsupported bit rate \n");
rc = -EINVAL;
break;
}
if (cfg.channels == 1) {
cfg.channels = AUDREC_CMD_STEREO_MODE_MONO;
} else if (cfg.channels == 2) {
cfg.channels = AUDREC_CMD_STEREO_MODE_STEREO;
} else {
rc = -EINVAL;
break;
}
audio->samp_rate = convert_samp_rate(cfg.sample_rate);
audio->samp_rate_index =
convert_dsp_samp_index(cfg.sample_rate);
audio->channel_mode = cfg.channels;
audio->bit_rate = cfg.bit_rate;
audio->record_quality = record_quality;
MM_DBG(" Record Quality = 0x%8x \n", audio->record_quality);
rc = 0;
break;
}
default:
rc = -EINVAL;
}
mutex_unlock(&audio->lock);
return rc;
}
static long audpcm_in_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct audio_in *audio = file->private_data;
int rc = 0;
if (cmd == AUDIO_GET_STATS) {
struct msm_audio_stats stats;
stats.byte_count = atomic_read(&audio->in_bytes);
if (copy_to_user((void *) arg, &stats, sizeof(stats)))
return -EFAULT;
return 0;
}
mutex_lock(&audio->lock);
switch (cmd) {
case AUDIO_START: {
rc = audpcm_in_enable(audio);
audio->stopped = 0;
break;
}
case AUDIO_STOP:
rc = audpcm_in_disable(audio);
break;
case AUDIO_FLUSH:
if (audio->stopped) {
/* Make sure we're stopped and we wake any threads
* that might be blocked holding the read_lock.
* While audio->stopped read threads will always
* exit immediately.
*/
wake_up(&audio->wait);
mutex_lock(&audio->read_lock);
audpcm_in_flush(audio);
mutex_unlock(&audio->read_lock);
}
break;
case AUDIO_SET_CONFIG: {
struct msm_audio_config cfg;
if (copy_from_user(&cfg, (void *) arg, sizeof(cfg))) {
rc = -EFAULT;
break;
}
if (cfg.channel_count == 1) {
cfg.channel_count = AUDREC_CMD_STEREO_MODE_MONO;
} else if (cfg.channel_count == 2) {
cfg.channel_count = AUDREC_CMD_STEREO_MODE_STEREO;
} else {
rc = -EINVAL;
break;
}
audio->samp_rate = convert_samp_rate(cfg.sample_rate);
audio->samp_rate_index =
convert_dsp_samp_index(cfg.sample_rate);
audio->channel_mode = cfg.channel_count;
audio->buffer_size =
audio->channel_mode ? STEREO_DATA_SIZE
: MONO_DATA_SIZE;
break;
}
case AUDIO_GET_CONFIG: {
struct msm_audio_config cfg;
cfg.buffer_size = audio->buffer_size;
cfg.buffer_count = FRAME_NUM;
cfg.sample_rate = convert_samp_index(audio->samp_rate);
if (audio->channel_mode == AUDREC_CMD_STEREO_MODE_MONO)
cfg.channel_count = 1;
else
cfg.channel_count = 2;
cfg.type = 0;
cfg.unused[0] = 0;
cfg.unused[1] = 0;
cfg.unused[2] = 0;
if (copy_to_user((void *) arg, &cfg, sizeof(cfg)))
rc = -EFAULT;
break;
}
default:
rc = -EINVAL;
}
mutex_unlock(&audio->lock);
return rc;
}