static int limit_channels_and_rates(struct snd_dice *dice,
struct snd_pcm_runtime *runtime,
- struct amdtp_stream *stream)
+ enum amdtp_stream_direction dir,
+ unsigned int index, unsigned int size)
{
struct snd_pcm_hardware *hw = &runtime->hw;
+ struct amdtp_stream *stream;
unsigned int rate;
- __be32 reg[2];
+ __be32 reg;
int err;
/*
* Retrieve current Multi Bit Linear Audio data channel and limit to
* it.
*/
- if (stream == &dice->tx_stream) {
- err = snd_dice_transaction_read_tx(dice, TX_NUMBER_AUDIO,
- reg, sizeof(reg));
+ if (dir == AMDTP_IN_STREAM) {
+ stream = &dice->tx_stream[index];
+ err = snd_dice_transaction_read_tx(dice,
+ size * index + TX_NUMBER_AUDIO,
+ ®, sizeof(reg));
} else {
- err = snd_dice_transaction_read_rx(dice, RX_NUMBER_AUDIO,
- reg, sizeof(reg));
+ stream = &dice->rx_stream[index];
+ err = snd_dice_transaction_read_rx(dice,
+ size * index + RX_NUMBER_AUDIO,
+ ®, sizeof(reg));
}
if (err < 0)
return err;
- hw->channels_min = hw->channels_max = be32_to_cpu(reg[0]);
+ hw->channels_min = hw->channels_max = be32_to_cpu(reg);
/* Retrieve current sampling transfer frequency and limit to it. */
err = snd_dice_transaction_get_rate(dice, &rate);
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_pcm_hardware *hw = &runtime->hw;
+ enum amdtp_stream_direction dir;
struct amdtp_stream *stream;
+ __be32 reg[2];
+ unsigned int count, size;
int err;
hw->info = SNDRV_PCM_INFO_MMAP |
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
hw->formats = AM824_IN_PCM_FORMAT_BITS;
- stream = &dice->tx_stream;
+ dir = AMDTP_IN_STREAM;
+ stream = &dice->tx_stream[substream->pcm->device];
+ err = snd_dice_transaction_read_tx(dice, TX_NUMBER, reg,
+ sizeof(reg));
} else {
hw->formats = AM824_OUT_PCM_FORMAT_BITS;
- stream = &dice->rx_stream;
+ dir = AMDTP_OUT_STREAM;
+ stream = &dice->rx_stream[substream->pcm->device];
+ err = snd_dice_transaction_read_rx(dice, RX_NUMBER, reg,
+ sizeof(reg));
}
- err = limit_channels_and_rates(dice, runtime, stream);
+ if (err < 0)
+ return err;
+
+ count = min_t(unsigned int, be32_to_cpu(reg[0]), MAX_STREAMS);
+ if (substream->pcm->device >= count)
+ return -ENXIO;
+
+ size = be32_to_cpu(reg[1]) * 4;
+ err = limit_channels_and_rates(dice, substream->runtime, dir,
+ substream->pcm->device, size);
if (err < 0)
return err;
limit_period_and_buffer(hw);
struct snd_pcm_hw_params *hw_params)
{
struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
mutex_unlock(&dice->mutex);
}
- amdtp_am824_set_pcm_format(&dice->tx_stream, params_format(hw_params));
+ amdtp_am824_set_pcm_format(stream, params_format(hw_params));
return 0;
}
struct snd_pcm_hw_params *hw_params)
{
struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
mutex_unlock(&dice->mutex);
}
- amdtp_am824_set_pcm_format(&dice->rx_stream, params_format(hw_params));
+ amdtp_am824_set_pcm_format(stream, params_format(hw_params));
return 0;
}
static int capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
int err;
mutex_lock(&dice->mutex);
err = snd_dice_stream_start_duplex(dice, substream->runtime->rate);
mutex_unlock(&dice->mutex);
if (err >= 0)
- amdtp_stream_pcm_prepare(&dice->tx_stream);
+ amdtp_stream_pcm_prepare(stream);
return 0;
}
static int playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
int err;
mutex_lock(&dice->mutex);
err = snd_dice_stream_start_duplex(dice, substream->runtime->rate);
mutex_unlock(&dice->mutex);
if (err >= 0)
- amdtp_stream_pcm_prepare(&dice->rx_stream);
+ amdtp_stream_pcm_prepare(stream);
return err;
}
static int capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
- amdtp_stream_pcm_trigger(&dice->tx_stream, substream);
+ amdtp_stream_pcm_trigger(stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
- amdtp_stream_pcm_trigger(&dice->tx_stream, NULL);
+ amdtp_stream_pcm_trigger(stream, NULL);
break;
default:
return -EINVAL;
static int playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
- amdtp_stream_pcm_trigger(&dice->rx_stream, substream);
+ amdtp_stream_pcm_trigger(stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
- amdtp_stream_pcm_trigger(&dice->rx_stream, NULL);
+ amdtp_stream_pcm_trigger(stream, NULL);
break;
default:
return -EINVAL;
static snd_pcm_uframes_t capture_pointer(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
- return amdtp_stream_pcm_pointer(&dice->tx_stream);
+ return amdtp_stream_pcm_pointer(stream);
}
static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
- return amdtp_stream_pcm_pointer(&dice->rx_stream);
+ return amdtp_stream_pcm_pointer(stream);
}
int snd_dice_create_pcm(struct snd_dice *dice)
{
- static struct snd_pcm_ops capture_ops = {
+ static const struct snd_pcm_ops capture_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
- static struct snd_pcm_ops playback_ops = {
+ static const struct snd_pcm_ops playback_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
};
__be32 reg;
struct snd_pcm *pcm;
- unsigned int capture, playback;
+ unsigned int i, max_capture, max_playback, capture, playback;
int err;
- /*
- * Check whether PCM substreams are required.
- *
- * TODO: in the case that any PCM substreams are not avail at a certain
- * sampling transfer frequency?
- */
- err = snd_dice_transaction_read_tx(dice, TX_NUMBER_AUDIO,
- ®, sizeof(reg));
- if (err < 0)
- return err;
- if (be32_to_cpu(reg) > 0)
- capture = 1;
-
- err = snd_dice_transaction_read_rx(dice, RX_NUMBER_AUDIO,
- ®, sizeof(reg));
- if (err < 0)
- return err;
- if (be32_to_cpu(reg) > 0)
- playback = 1;
-
- err = snd_pcm_new(dice->card, "DICE", 0, playback, capture, &pcm);
- if (err < 0)
- return err;
- pcm->private_data = dice;
- strcpy(pcm->name, dice->card->shortname);
-
- if (capture > 0)
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
+ /* Check whether PCM substreams are required. */
+ if (dice->force_two_pcms) {
+ max_capture = max_playback = 2;
+ } else {
+ max_capture = max_playback = 0;
+ err = snd_dice_transaction_read_tx(dice, TX_NUMBER, ®,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ max_capture = min_t(unsigned int, be32_to_cpu(reg), MAX_STREAMS);
+
+ err = snd_dice_transaction_read_rx(dice, RX_NUMBER, ®,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ max_playback = min_t(unsigned int, be32_to_cpu(reg), MAX_STREAMS);
+ }
- if (playback > 0)
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
+ for (i = 0; i < MAX_STREAMS; i++) {
+ capture = playback = 0;
+ if (i < max_capture)
+ capture = 1;
+ if (i < max_playback)
+ playback = 1;
+ if (capture == 0 && playback == 0)
+ break;
+
+ err = snd_pcm_new(dice->card, "DICE", i, playback, capture,
+ &pcm);
+ if (err < 0)
+ return err;
+ pcm->private_data = dice;
+ strcpy(pcm->name, dice->card->shortname);
+
+ if (capture > 0)
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+ &capture_ops);
+
+ if (playback > 0)
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ &playback_ops);
+ }
return 0;
}
projects / deliverable / linux.git / blobdiff