static int lx_pcm_open(struct snd_pcm_substream *substream)
{
struct lx6464es *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err = 0;
int board_rate;
dev_dbg(chip->card->dev, "->lx_pcm_open\n");
mutex_lock(&chip->setup_mutex);
/* copy the struct snd_pcm_hardware struct */
runtime->hw = lx_caps;
#if 0
/* buffer-size should better be multiple of period-size */
err = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (err < 0) {
dev_warn(chip->card->dev, "could not constrain periods\n");
goto exit;
}
#endif
/* the clock rate cannot be changed */
board_rate = chip->board_sample_rate;
err = snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_RATE,
board_rate);
if (err < 0) {
dev_warn(chip->card->dev, "could not constrain periods\n");
goto exit;
}
/* constrain period size */
err = snd_pcm_hw_constraint_minmax(runtime,
SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
MICROBLAZE_IBL_MIN,
MICROBLAZE_IBL_MAX);
if (err < 0) {
dev_warn(chip->card->dev,
"could not constrain period size\n");
goto exit;
}
snd_pcm_hw_constraint_step(runtime, 0,
SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 32);
snd_pcm_set_sync(substream);
err = 0;
exit:
runtime->private_data = chip;
mutex_unlock(&chip->setup_mutex);
dev_dbg(chip->card->dev, "<-lx_pcm_open, %d\n", err);
return err;
}
static int snd_pcm_playback_open(snd_pcm_substream_t * substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
pcm_hw_t *chip = snd_pcm_substream_chip(substream);
int err = 0;
DEBUG_PRINT(("ALSA Core :>>> snd_pcm_playback_open(substream = 0x%08lx)\n",substream));
DEBUG_PRINT((">>> chip = 0x%08lx\n",chip));
snd_pcm_set_sync(substream);
#if 0
// No Rule
snd_pcm_hw_rule_add(substream->runtime,
0, SNDRV_PCM_HW_PARAM_CHANNELS,
snd_pcm_period_size_rule,
0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-1);
snd_pcm_hw_rule_add(substream->runtime,
0, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
snd_pcm_period_size_rule,
0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-1);
snd_pcm_hw_rule_add(substream->runtime,
0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
snd_pcm_period_size_rule,
0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-1);
#endif
//spin_lock(&chip->lock);
chip->current_substream = substream;
runtime->hw = chip->hw;
// To check in case of decoder is not working than in rawmode of spdif
// we will support only 32 mode of data else we can support any
if(chip->playback_ops->open_device)
err = chip->playback_ops->open_device(substream);
// spin_unlock(&chip->lock);
DEBUG_PRINT(("ALSA Core :<<< snd_pcm_playback_open(substream = 0x%08lx)\n",substream));
return err;
}
static int
pcm_open(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
struct snd_bebob_rate_spec *spec = bebob->spec->rate;
unsigned int sampling_rate;
enum snd_bebob_clock_type src;
int err;
err = snd_bebob_stream_lock_try(bebob);
if (err < 0)
goto end;
err = pcm_init_hw_params(bebob, substream);
if (err < 0)
goto err_locked;
err = snd_bebob_stream_get_clock_src(bebob, &src);
if (err < 0)
goto err_locked;
/*
* When source of clock is internal or any PCM stream are running,
* the available sampling rate is limited at current sampling rate.
*/
if (src == SND_BEBOB_CLOCK_TYPE_EXTERNAL ||
amdtp_stream_pcm_running(&bebob->tx_stream) ||
amdtp_stream_pcm_running(&bebob->rx_stream)) {
err = spec->get(bebob, &sampling_rate);
if (err < 0) {
dev_err(&bebob->unit->device,
"fail to get sampling rate: %d\n", err);
goto err_locked;
}
substream->runtime->hw.rate_min = sampling_rate;
substream->runtime->hw.rate_max = sampling_rate;
}
snd_pcm_set_sync(substream);
end:
return err;
err_locked:
snd_bebob_stream_lock_release(bebob);
return err;
}
static int skl_pcm_open(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct hdac_ext_stream *stream;
struct snd_pcm_runtime *runtime = substream->runtime;
struct skl_dma_params *dma_params;
dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
stream = snd_hdac_ext_stream_assign(ebus, substream,
skl_get_host_stream_type(ebus));
if (stream == NULL)
return -EBUSY;
skl_set_pcm_constrains(ebus, runtime);
/*
* disable WALLCLOCK timestamps for capture streams
* until we figure out how to handle digital inputs
*/
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_WALL_CLOCK; /* legacy */
runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_LINK_ATIME;
}
runtime->private_data = stream;
dma_params = kzalloc(sizeof(*dma_params), GFP_KERNEL);
if (!dma_params)
return -ENOMEM;
dma_params->stream_tag = hdac_stream(stream)->stream_tag;
snd_soc_dai_set_dma_data(dai, substream, dma_params);
dev_dbg(dai->dev, "stream tag set in dma params=%d\n",
dma_params->stream_tag);
skl_set_suspend_active(substream, dai, true);
snd_pcm_set_sync(substream);
return 0;
}
/*
* open
*/
static void snd_nm256_setup_stream(nm256_t *chip, nm256_stream_t *s,
snd_pcm_substream_t *substream,
snd_pcm_hardware_t *hw_ptr)
{
snd_pcm_runtime_t *runtime = substream->runtime;
s->running = 0;
runtime->hw = *hw_ptr;
runtime->hw.buffer_bytes_max = s->bufsize;
runtime->hw.period_bytes_max = s->bufsize / 2;
runtime->dma_area = (void*) s->bufptr;
runtime->dma_addr = s->bufptr_addr;
runtime->dma_bytes = s->bufsize;
runtime->private_data = s;
s->substream = substream;
snd_pcm_set_sync(substream);
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
&constraints_rates);
}
static int pcm_open(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
int err;
err = snd_dice_stream_lock_try(dice);
if (err < 0)
goto end;
err = init_hw_info(dice, substream);
if (err < 0)
goto err_locked;
snd_pcm_set_sync(substream);
end:
return err;
err_locked:
snd_dice_stream_lock_release(dice);
return err;
}
static int pcm_open(struct snd_pcm_substream *substream)
{
struct snd_efw *efw = substream->private_data;
unsigned int sampling_rate;
enum snd_efw_clock_source clock_source;
int err;
err = snd_efw_stream_lock_try(efw);
if (err < 0)
goto end;
err = pcm_init_hw_params(efw, substream);
if (err < 0)
goto err_locked;
err = snd_efw_command_get_clock_source(efw, &clock_source);
if (err < 0)
goto err_locked;
/*
* When source of clock is not internal or any PCM streams are running,
* available sampling rate is limited at current sampling rate.
*/
if ((clock_source != SND_EFW_CLOCK_SOURCE_INTERNAL) ||
amdtp_stream_pcm_running(&efw->tx_stream) ||
amdtp_stream_pcm_running(&efw->rx_stream)) {
err = snd_efw_command_get_sampling_rate(efw, &sampling_rate);
if (err < 0)
goto err_locked;
substream->runtime->hw.rate_min = sampling_rate;
substream->runtime->hw.rate_max = sampling_rate;
}
snd_pcm_set_sync(substream);
end:
return err;
err_locked:
snd_efw_stream_lock_release(efw);
return err;
}
static int snd_pcm_capture_open(snd_pcm_substream_t * substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
pcm_hw_t *chip = snd_pcm_substream_chip(substream);
int err = 0;
DEBUG_CAPTURE_CALLS(("snd_pcm_capture_open(substream = 0x%08lx)\n",substream));
DEBUG_CAPTURE_CALLS((">>> chip = 0x%08lx\n",chip));
snd_pcm_set_sync(substream);
chip->current_substream = substream;
runtime->hw = chip->hw;
if(chip->playback_ops->open_device)
err = chip->playback_ops->open_device(substream);
// spin_unlock(&chip->lock);
return err;
}
static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,
struct snd_pcm_substream *subs)
{
struct snd_pcm_runtime *runtime = subs->runtime;
int i, j, fflags;
static int typical_freqs[] = {
44100,
22050,
11025,
0,
};
static int typical_freq_flags[] = {
SNDRV_PCM_RATE_44100,
SNDRV_PCM_RATE_22050,
SNDRV_PCM_RATE_11025,
0,
};
/* look up frequency table and fill bit mask */
runtime->hw.rates = 0;
fflags = chip->freqs_ok;
for (i = 0; typical_freqs[i]; i++) {
for (j = 0; j < chip->num_freqs; j++) {
if ((chip->freqs_ok & (1 << j)) &&
chip->freq_table[j] == typical_freqs[i]) {
runtime->hw.rates |= typical_freq_flags[i];
fflags &= ~(1 << j);
break;
}
}
}
if (fflags) /* rest */
runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
/* check for minimum and maximum rates */
for (i = 0; i < chip->num_freqs; i++) {
if (chip->freqs_ok & (1 << i)) {
runtime->hw.rate_max = chip->freq_table[i];
break;
}
}
for (i = chip->num_freqs - 1; i >= 0; i--) {
if (chip->freqs_ok & (1 << i)) {
runtime->hw.rate_min = chip->freq_table[i];
break;
}
}
runtime->hw.formats = chip->formats_ok;
if (chip->can_capture) {
if (! chip->can_duplex)
runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
}
runtime->private_data = rec;
rec->substream = subs;
#if 0 /* FIXME: still under development.. */
snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
snd_pmac_hw_rule_rate, chip, rec->stream, -1);
snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
snd_pmac_hw_rule_format, chip, rec->stream, -1);
#endif
runtime->hw.periods_max = rec->cmd.size - 1;
if (chip->can_duplex)
snd_pcm_set_sync(subs);
/* constraints to fix choppy sound */
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
return 0;
}
static int oxygen_open(struct snd_pcm_substream *substream,
unsigned int channel)
{
struct oxygen *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
runtime->private_data = (void *)(uintptr_t)channel;
if (channel == PCM_B && chip->has_ac97_1 &&
(chip->model.device_config & CAPTURE_2_FROM_AC97_1))
runtime->hw = oxygen_ac97_hardware;
else
runtime->hw = *oxygen_hardware[channel];
switch (channel) {
case PCM_C:
runtime->hw.rates &= ~(SNDRV_PCM_RATE_32000 |
SNDRV_PCM_RATE_64000);
runtime->hw.rate_min = 44100;
break;
case PCM_MULTICH:
runtime->hw.channels_max = chip->model.dac_channels_pcm;
break;
}
if (chip->model.pcm_hardware_filter)
chip->model.pcm_hardware_filter(channel, &runtime->hw);
err = snd_pcm_hw_constraint_step(runtime, 0,
SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
if (err < 0)
return err;
err = snd_pcm_hw_constraint_step(runtime, 0,
SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32);
if (err < 0)
return err;
if (runtime->hw.formats & SNDRV_PCM_FMTBIT_S32_LE) {
err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
if (err < 0)
return err;
}
if (runtime->hw.channels_max > 2) {
err = snd_pcm_hw_constraint_step(runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
2);
if (err < 0)
return err;
}
if (channel == PCM_MULTICH) {
err = snd_pcm_hw_constraint_minmax
(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 0, 8192000);
if (err < 0)
return err;
}
snd_pcm_set_sync(substream);
chip->streams[channel] = substream;
mutex_lock(&chip->mutex);
chip->pcm_active |= 1 << channel;
if (channel == PCM_SPDIF) {
chip->spdif_pcm_bits = chip->spdif_bits;
chip->controls[CONTROL_SPDIF_PCM]->vd[0].access &=
~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
SNDRV_CTL_EVENT_MASK_INFO,
&chip->controls[CONTROL_SPDIF_PCM]->id);
}
mutex_unlock(&chip->mutex);
return 0;
}
static int pcm_init_hw_params(struct snd_tscm *tscm,
struct snd_pcm_substream *substream)
{
static const struct snd_pcm_hardware hardware = {
.info = SNDRV_PCM_INFO_BATCH |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_JOINT_DUPLEX |
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID,
.rates = SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000,
.rate_min = 44100,
.rate_max = 96000,
.channels_min = 10,
.channels_max = 18,
};
struct snd_pcm_runtime *runtime = substream->runtime;
struct amdtp_stream *stream;
unsigned int pcm_channels;
runtime->hw = hardware;
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
stream = &tscm->tx_stream;
pcm_channels = tscm->spec->pcm_capture_analog_channels;
} else {
runtime->hw.formats =
SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S32;
stream = &tscm->rx_stream;
pcm_channels = tscm->spec->pcm_playback_analog_channels;
}
if (tscm->spec->has_adat)
pcm_channels += 8;
if (tscm->spec->has_spdif)
pcm_channels += 2;
runtime->hw.channels_min = runtime->hw.channels_max = pcm_channels;
set_buffer_params(&runtime->hw);
return amdtp_tscm_add_pcm_hw_constraints(stream, runtime);
}
static int pcm_open(struct snd_pcm_substream *substream)
{
struct snd_tscm *tscm = substream->private_data;
enum snd_tscm_clock clock;
unsigned int rate;
int err;
err = snd_tscm_stream_lock_try(tscm);
if (err < 0)
goto end;
err = pcm_init_hw_params(tscm, substream);
if (err < 0)
goto err_locked;
err = snd_tscm_stream_get_clock(tscm, &clock);
if (clock != SND_TSCM_CLOCK_INTERNAL ||
amdtp_stream_pcm_running(&tscm->rx_stream) ||
amdtp_stream_pcm_running(&tscm->tx_stream)) {
err = snd_tscm_stream_get_rate(tscm, &rate);
if (err < 0)
goto err_locked;
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
}
snd_pcm_set_sync(substream);
end:
return err;
err_locked:
snd_tscm_stream_lock_release(tscm);
return err;
}
static int pcm_close(struct snd_pcm_substream *substream)
{
struct snd_tscm *tscm = substream->private_data;
snd_tscm_stream_lock_release(tscm);
return 0;
}
static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_tscm *tscm = substream->private_data;
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&tscm->mutex);
tscm->substreams_counter++;
mutex_unlock(&tscm->mutex);
}
amdtp_tscm_set_pcm_format(&tscm->tx_stream, params_format(hw_params));
return 0;
}
static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_tscm *tscm = substream->private_data;
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&tscm->mutex);
tscm->substreams_counter++;
mutex_unlock(&tscm->mutex);
}
amdtp_tscm_set_pcm_format(&tscm->rx_stream, params_format(hw_params));
return 0;
}
static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
{
struct snd_tscm *tscm = substream->private_data;
mutex_lock(&tscm->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
tscm->substreams_counter--;
snd_tscm_stream_stop_duplex(tscm);
mutex_unlock(&tscm->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
{
struct snd_tscm *tscm = substream->private_data;
mutex_lock(&tscm->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
tscm->substreams_counter--;
snd_tscm_stream_stop_duplex(tscm);
mutex_unlock(&tscm->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int pcm_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_tscm *tscm = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
mutex_lock(&tscm->mutex);
err = snd_tscm_stream_start_duplex(tscm, runtime->rate);
if (err >= 0)
amdtp_stream_pcm_prepare(&tscm->tx_stream);
mutex_unlock(&tscm->mutex);
return err;
}
static int pcm_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_tscm *tscm = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
mutex_lock(&tscm->mutex);
err = snd_tscm_stream_start_duplex(tscm, runtime->rate);
if (err >= 0)
amdtp_stream_pcm_prepare(&tscm->rx_stream);
mutex_unlock(&tscm->mutex);
return err;
}
static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_tscm *tscm = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&tscm->tx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&tscm->tx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_tscm *tscm = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&tscm->rx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&tscm->rx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_tscm *tscm = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&tscm->tx_stream);
}
static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_tscm *tscm = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&tscm->rx_stream);
}
static const struct snd_pcm_ops pcm_capture_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_capture_hw_params,
.hw_free = pcm_capture_hw_free,
.prepare = pcm_capture_prepare,
.trigger = pcm_capture_trigger,
.pointer = pcm_capture_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
};
static const struct snd_pcm_ops pcm_playback_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_playback_hw_params,
.hw_free = pcm_playback_hw_free,
.prepare = pcm_playback_prepare,
.trigger = pcm_playback_trigger,
.pointer = pcm_playback_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
int snd_tscm_create_pcm_devices(struct snd_tscm *tscm)
{
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(tscm->card, tscm->card->driver, 0, 1, 1, &pcm);
if (err < 0)
return err;
pcm->private_data = tscm;
snprintf(pcm->name, sizeof(pcm->name),
"%s PCM", tscm->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
return 0;
}
static int dice_rate_constraint(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct snd_pcm_substream *substream = rule->private;
struct snd_dice *dice = substream->private_data;
const struct snd_interval *c =
hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_interval *r =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval rates = {
.min = UINT_MAX, .max = 0, .integer = 1
};
unsigned int i, rate, mode, *pcm_channels;
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
pcm_channels = dice->tx_channels;
else
pcm_channels = dice->rx_channels;
for (i = 0; i < ARRAY_SIZE(snd_dice_rates); ++i) {
rate = snd_dice_rates[i];
if (snd_dice_stream_get_rate_mode(dice, rate, &mode) < 0)
continue;
if (!snd_interval_test(c, pcm_channels[mode]))
continue;
rates.min = min(rates.min, rate);
rates.max = max(rates.max, rate);
}
return snd_interval_refine(r, &rates);
}
static int dice_channels_constraint(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct snd_pcm_substream *substream = rule->private;
struct snd_dice *dice = substream->private_data;
const struct snd_interval *r =
hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval *c =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_interval channels = {
.min = UINT_MAX, .max = 0, .integer = 1
};
unsigned int i, rate, mode, *pcm_channels;
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
pcm_channels = dice->tx_channels;
else
pcm_channels = dice->rx_channels;
for (i = 0; i < ARRAY_SIZE(snd_dice_rates); ++i) {
rate = snd_dice_rates[i];
if (snd_dice_stream_get_rate_mode(dice, rate, &mode) < 0)
continue;
if (!snd_interval_test(r, rate))
continue;
channels.min = min(channels.min, pcm_channels[mode]);
channels.max = max(channels.max, pcm_channels[mode]);
}
return snd_interval_refine(c, &channels);
}
static void limit_channels_and_rates(struct snd_dice *dice,
struct snd_pcm_runtime *runtime,
unsigned int *pcm_channels)
{
struct snd_pcm_hardware *hw = &runtime->hw;
unsigned int i, rate, mode;
hw->channels_min = UINT_MAX;
hw->channels_max = 0;
for (i = 0; i < ARRAY_SIZE(snd_dice_rates); ++i) {
rate = snd_dice_rates[i];
if (snd_dice_stream_get_rate_mode(dice, rate, &mode) < 0)
continue;
hw->rates |= snd_pcm_rate_to_rate_bit(rate);
if (pcm_channels[mode] == 0)
continue;
hw->channels_min = min(hw->channels_min, pcm_channels[mode]);
hw->channels_max = max(hw->channels_max, pcm_channels[mode]);
}
snd_pcm_limit_hw_rates(runtime);
}
static void limit_period_and_buffer(struct snd_pcm_hardware *hw)
{
hw->periods_min = 2; /* SNDRV_PCM_INFO_BATCH */
hw->periods_max = UINT_MAX;
hw->period_bytes_min = 4 * hw->channels_max; /* byte for a frame */
/* Just to prevent from allocating much pages. */
hw->period_bytes_max = hw->period_bytes_min * 2048;
hw->buffer_bytes_max = hw->period_bytes_max * hw->periods_min;
}
static int init_hw_info(struct snd_dice *dice,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_pcm_hardware *hw = &runtime->hw;
struct amdtp_stream *stream;
unsigned int *pcm_channels;
int err;
hw->info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_BATCH |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_JOINT_DUPLEX |
SNDRV_PCM_INFO_BLOCK_TRANSFER;
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
hw->formats = AMDTP_IN_PCM_FORMAT_BITS;
stream = &dice->tx_stream;
pcm_channels = dice->tx_channels;
} else {
hw->formats = AMDTP_OUT_PCM_FORMAT_BITS;
stream = &dice->rx_stream;
pcm_channels = dice->rx_channels;
}
limit_channels_and_rates(dice, runtime, pcm_channels);
limit_period_and_buffer(hw);
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
dice_rate_constraint, substream,
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
if (err < 0)
goto end;
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
dice_channels_constraint, substream,
SNDRV_PCM_HW_PARAM_RATE, -1);
if (err < 0)
goto end;
err = amdtp_stream_add_pcm_hw_constraints(stream, runtime);
end:
return err;
}
static int pcm_open(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
unsigned int source, rate;
bool internal;
int err;
err = snd_dice_stream_lock_try(dice);
if (err < 0)
goto end;
err = init_hw_info(dice, substream);
if (err < 0)
goto err_locked;
err = snd_dice_transaction_get_clock_source(dice, &source);
if (err < 0)
goto err_locked;
switch (source) {
case CLOCK_SOURCE_AES1:
case CLOCK_SOURCE_AES2:
case CLOCK_SOURCE_AES3:
case CLOCK_SOURCE_AES4:
case CLOCK_SOURCE_AES_ANY:
case CLOCK_SOURCE_ADAT:
case CLOCK_SOURCE_TDIF:
case CLOCK_SOURCE_WC:
internal = false;
break;
default:
internal = true;
break;
}
/*
* When source of clock is not internal or any PCM streams are running,
* available sampling rate is limited at current sampling rate.
*/
if (!internal ||
amdtp_stream_pcm_running(&dice->tx_stream) ||
amdtp_stream_pcm_running(&dice->rx_stream)) {
err = snd_dice_transaction_get_rate(dice, &rate);
if (err < 0)
goto err_locked;
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
}
snd_pcm_set_sync(substream);
end:
return err;
err_locked:
snd_dice_stream_lock_release(dice);
return err;
}
static int pcm_close(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
snd_dice_stream_lock_release(dice);
return 0;
}
static int capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_dice *dice = substream->private_data;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&dice->mutex);
dice->substreams_counter++;
mutex_unlock(&dice->mutex);
}
amdtp_stream_set_pcm_format(&dice->tx_stream,
params_format(hw_params));
return snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
}
static int playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_dice *dice = substream->private_data;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&dice->mutex);
dice->substreams_counter++;
mutex_unlock(&dice->mutex);
}
amdtp_stream_set_pcm_format(&dice->rx_stream,
params_format(hw_params));
return snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
}
static int capture_hw_free(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
mutex_lock(&dice->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
dice->substreams_counter--;
snd_dice_stream_stop_duplex(dice);
mutex_unlock(&dice->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int playback_hw_free(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
mutex_lock(&dice->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
dice->substreams_counter--;
snd_dice_stream_stop_duplex(dice);
mutex_unlock(&dice->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
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);
return 0;
}
static int playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
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);
return err;
}
static int capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_dice *dice = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&dice->tx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&dice->tx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static int playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_dice *dice = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&dice->rx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&dice->rx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static snd_pcm_uframes_t capture_pointer(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
return amdtp_stream_pcm_pointer(&dice->tx_stream);
}
static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_dice *dice = substream->private_data;
return amdtp_stream_pcm_pointer(&dice->rx_stream);
}
int snd_dice_create_pcm(struct snd_dice *dice)
{
static struct snd_pcm_ops capture_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = capture_hw_params,
.hw_free = capture_hw_free,
.prepare = capture_prepare,
.trigger = capture_trigger,
.pointer = capture_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
static struct snd_pcm_ops playback_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = playback_hw_params,
.hw_free = playback_hw_free,
.prepare = playback_prepare,
.trigger = playback_trigger,
.pointer = playback_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
struct snd_pcm *pcm;
unsigned int i, capture, playback;
int err;
capture = playback = 0;
for (i = 0; i < 3; i++) {
if (dice->tx_channels[i] > 0)
capture = 1;
if (dice->rx_channels[i] > 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);
if (playback > 0)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
return 0;
}
static int
hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
{
struct snd_bebob_stream_formation *formations = rule->private;
struct snd_interval *r =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
const struct snd_interval *c =
hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_interval t = {
.min = UINT_MAX, .max = 0, .integer = 1
};
unsigned int i;
for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
/* entry is invalid */
if (formations[i].pcm == 0)
continue;
if (!snd_interval_test(c, formations[i].pcm))
continue;
t.min = min(t.min, snd_bebob_rate_table[i]);
t.max = max(t.max, snd_bebob_rate_table[i]);
}
return snd_interval_refine(r, &t);
}
static int
hw_rule_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
{
struct snd_bebob_stream_formation *formations = rule->private;
struct snd_interval *c =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
const struct snd_interval *r =
hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval t = {
.min = UINT_MAX, .max = 0, .integer = 1
};
unsigned int i;
for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
/* entry is invalid */
if (formations[i].pcm == 0)
continue;
if (!snd_interval_test(r, snd_bebob_rate_table[i]))
continue;
t.min = min(t.min, formations[i].pcm);
t.max = max(t.max, formations[i].pcm);
}
return snd_interval_refine(c, &t);
}
static void
limit_channels_and_rates(struct snd_pcm_hardware *hw,
struct snd_bebob_stream_formation *formations)
{
unsigned int i;
hw->channels_min = UINT_MAX;
hw->channels_max = 0;
hw->rate_min = UINT_MAX;
hw->rate_max = 0;
hw->rates = 0;
for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
/* entry has no PCM channels */
if (formations[i].pcm == 0)
continue;
hw->channels_min = min(hw->channels_min, formations[i].pcm);
hw->channels_max = max(hw->channels_max, formations[i].pcm);
hw->rate_min = min(hw->rate_min, snd_bebob_rate_table[i]);
hw->rate_max = max(hw->rate_max, snd_bebob_rate_table[i]);
hw->rates |= snd_pcm_rate_to_rate_bit(snd_bebob_rate_table[i]);
}
}
static int
pcm_init_hw_params(struct snd_bebob *bebob,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct amdtp_stream *s;
struct snd_bebob_stream_formation *formations;
int err;
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
s = &bebob->tx_stream;
formations = bebob->tx_stream_formations;
} else {
runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
s = &bebob->rx_stream;
formations = bebob->rx_stream_formations;
}
limit_channels_and_rates(&runtime->hw, formations);
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_channels, formations,
SNDRV_PCM_HW_PARAM_RATE, -1);
if (err < 0)
goto end;
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
hw_rule_rate, formations,
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
if (err < 0)
goto end;
err = amdtp_am824_add_pcm_hw_constraints(s, runtime);
end:
return err;
}
static int
pcm_open(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
const struct snd_bebob_rate_spec *spec = bebob->spec->rate;
unsigned int sampling_rate;
enum snd_bebob_clock_type src;
int err;
err = snd_bebob_stream_lock_try(bebob);
if (err < 0)
goto end;
err = pcm_init_hw_params(bebob, substream);
if (err < 0)
goto err_locked;
err = snd_bebob_stream_get_clock_src(bebob, &src);
if (err < 0)
goto err_locked;
/*
* When source of clock is internal or any PCM stream are running,
* the available sampling rate is limited at current sampling rate.
*/
if (src == SND_BEBOB_CLOCK_TYPE_EXTERNAL ||
amdtp_stream_pcm_running(&bebob->tx_stream) ||
amdtp_stream_pcm_running(&bebob->rx_stream)) {
err = spec->get(bebob, &sampling_rate);
if (err < 0) {
dev_err(&bebob->unit->device,
"fail to get sampling rate: %d\n", err);
goto err_locked;
}
substream->runtime->hw.rate_min = sampling_rate;
substream->runtime->hw.rate_max = sampling_rate;
}
snd_pcm_set_sync(substream);
end:
return err;
err_locked:
snd_bebob_stream_lock_release(bebob);
return err;
}
static int
pcm_close(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
snd_bebob_stream_lock_release(bebob);
return 0;
}
static int
pcm_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_bebob *bebob = substream->private_data;
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&bebob->mutex);
bebob->substreams_counter++;
mutex_unlock(&bebob->mutex);
}
return 0;
}
static int
pcm_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_bebob *bebob = substream->private_data;
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&bebob->mutex);
bebob->substreams_counter++;
mutex_unlock(&bebob->mutex);
}
return 0;
}
static int
pcm_capture_hw_free(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) {
mutex_lock(&bebob->mutex);
bebob->substreams_counter--;
mutex_unlock(&bebob->mutex);
}
snd_bebob_stream_stop_duplex(bebob);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int
pcm_playback_hw_free(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) {
mutex_lock(&bebob->mutex);
bebob->substreams_counter--;
mutex_unlock(&bebob->mutex);
}
snd_bebob_stream_stop_duplex(bebob);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int
pcm_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
err = snd_bebob_stream_start_duplex(bebob, runtime->rate);
if (err >= 0)
amdtp_stream_pcm_prepare(&bebob->tx_stream);
return err;
}
static int
pcm_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
err = snd_bebob_stream_start_duplex(bebob, runtime->rate);
if (err >= 0)
amdtp_stream_pcm_prepare(&bebob->rx_stream);
return err;
}
static int
pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_bebob *bebob = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&bebob->tx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&bebob->tx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static int
pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_bebob *bebob = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&bebob->rx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&bebob->rx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static snd_pcm_uframes_t
pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_bebob *bebob = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&bebob->tx_stream);
}
static snd_pcm_uframes_t
pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_bebob *bebob = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&bebob->rx_stream);
}
static int pcm_capture_ack(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
return amdtp_stream_pcm_ack(&bebob->tx_stream);
}
static int pcm_playback_ack(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
return amdtp_stream_pcm_ack(&bebob->rx_stream);
}
int snd_bebob_create_pcm_devices(struct snd_bebob *bebob)
{
static const struct snd_pcm_ops capture_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_capture_hw_params,
.hw_free = pcm_capture_hw_free,
.prepare = pcm_capture_prepare,
.trigger = pcm_capture_trigger,
.pointer = pcm_capture_pointer,
.ack = pcm_capture_ack,
.page = snd_pcm_lib_get_vmalloc_page,
};
static const struct snd_pcm_ops playback_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_playback_hw_params,
.hw_free = pcm_playback_hw_free,
.prepare = pcm_playback_prepare,
.trigger = pcm_playback_trigger,
.pointer = pcm_playback_pointer,
.ack = pcm_playback_ack,
.page = snd_pcm_lib_get_vmalloc_page,
};
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(bebob->card, bebob->card->driver, 0, 1, 1, &pcm);
if (err < 0)
goto end;
pcm->private_data = bebob;
snprintf(pcm->name, sizeof(pcm->name),
"%s PCM", bebob->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
end:
return err;
}
static int hw_rule_rate(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct snd_interval *r =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
const struct snd_interval *c =
hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_interval t = {
.min = UINT_MAX, .max = 0, .integer = 1,
};
unsigned int i;
for (i = 0; i < SND_DG00X_RATE_COUNT; i++) {
if (!snd_interval_test(c,
snd_dg00x_stream_pcm_channels[i]))
continue;
t.min = min(t.min, snd_dg00x_stream_rates[i]);
t.max = max(t.max, snd_dg00x_stream_rates[i]);
}
return snd_interval_refine(r, &t);
}
static int hw_rule_channels(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct snd_interval *c =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
const struct snd_interval *r =
hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval t = {
.min = UINT_MAX, .max = 0, .integer = 1,
};
unsigned int i;
for (i = 0; i < SND_DG00X_RATE_COUNT; i++) {
if (!snd_interval_test(r, snd_dg00x_stream_rates[i]))
continue;
t.min = min(t.min, snd_dg00x_stream_pcm_channels[i]);
t.max = max(t.max, snd_dg00x_stream_pcm_channels[i]);
}
return snd_interval_refine(c, &t);
}
static int pcm_init_hw_params(struct snd_dg00x *dg00x,
struct snd_pcm_substream *substream)
{
static const struct snd_pcm_hardware hardware = {
.info = SNDRV_PCM_INFO_BATCH |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_JOINT_DUPLEX |
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID,
.rates = SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000,
.rate_min = 44100,
.rate_max = 96000,
.channels_min = 10,
.channels_max = 18,
.period_bytes_min = 4 * 18,
.period_bytes_max = 4 * 18 * 2048,
.buffer_bytes_max = 4 * 18 * 2048 * 2,
.periods_min = 2,
.periods_max = UINT_MAX,
};
struct amdtp_stream *s;
int err;
substream->runtime->hw = hardware;
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
s = &dg00x->tx_stream;
} else {
substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S16 |
SNDRV_PCM_FMTBIT_S32;
s = &dg00x->rx_stream;
}
err = snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_channels, NULL,
SNDRV_PCM_HW_PARAM_RATE, -1);
if (err < 0)
return err;
err = snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
hw_rule_rate, NULL,
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
if (err < 0)
return err;
return amdtp_dot_add_pcm_hw_constraints(s, substream->runtime);
}
static int pcm_open(struct snd_pcm_substream *substream)
{
struct snd_dg00x *dg00x = substream->private_data;
enum snd_dg00x_clock clock;
bool detect;
unsigned int rate;
int err;
err = snd_dg00x_stream_lock_try(dg00x);
if (err < 0)
goto end;
err = pcm_init_hw_params(dg00x, substream);
if (err < 0)
goto err_locked;
/* Check current clock source. */
err = snd_dg00x_stream_get_clock(dg00x, &clock);
if (err < 0)
goto err_locked;
if (clock != SND_DG00X_CLOCK_INTERNAL) {
err = snd_dg00x_stream_check_external_clock(dg00x, &detect);
if (err < 0)
goto err_locked;
if (!detect) {
err = -EBUSY;
goto err_locked;
}
}
if ((clock != SND_DG00X_CLOCK_INTERNAL) ||
amdtp_stream_pcm_running(&dg00x->rx_stream) ||
amdtp_stream_pcm_running(&dg00x->tx_stream)) {
err = snd_dg00x_stream_get_external_rate(dg00x, &rate);
if (err < 0)
goto err_locked;
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
}
snd_pcm_set_sync(substream);
end:
return err;
err_locked:
snd_dg00x_stream_lock_release(dg00x);
return err;
}
static int pcm_close(struct snd_pcm_substream *substream)
{
struct snd_dg00x *dg00x = substream->private_data;
snd_dg00x_stream_lock_release(dg00x);
return 0;
}
static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_dg00x *dg00x = substream->private_data;
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&dg00x->mutex);
dg00x->substreams_counter++;
mutex_unlock(&dg00x->mutex);
}
amdtp_dot_set_pcm_format(&dg00x->tx_stream, params_format(hw_params));
return 0;
}
static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_dg00x *dg00x = substream->private_data;
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&dg00x->mutex);
dg00x->substreams_counter++;
mutex_unlock(&dg00x->mutex);
}
amdtp_dot_set_pcm_format(&dg00x->rx_stream, params_format(hw_params));
return 0;
}
static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
{
struct snd_dg00x *dg00x = substream->private_data;
mutex_lock(&dg00x->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
dg00x->substreams_counter--;
snd_dg00x_stream_stop_duplex(dg00x);
mutex_unlock(&dg00x->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
{
struct snd_dg00x *dg00x = substream->private_data;
mutex_lock(&dg00x->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
dg00x->substreams_counter--;
snd_dg00x_stream_stop_duplex(dg00x);
mutex_unlock(&dg00x->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int pcm_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_dg00x *dg00x = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
mutex_lock(&dg00x->mutex);
err = snd_dg00x_stream_start_duplex(dg00x, runtime->rate);
if (err >= 0)
amdtp_stream_pcm_prepare(&dg00x->tx_stream);
mutex_unlock(&dg00x->mutex);
return err;
}
static int pcm_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_dg00x *dg00x = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
mutex_lock(&dg00x->mutex);
err = snd_dg00x_stream_start_duplex(dg00x, runtime->rate);
if (err >= 0) {
amdtp_stream_pcm_prepare(&dg00x->rx_stream);
amdtp_dot_reset(&dg00x->rx_stream);
}
mutex_unlock(&dg00x->mutex);
return err;
}
static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_dg00x *dg00x = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&dg00x->tx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&dg00x->tx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_dg00x *dg00x = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&dg00x->rx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&dg00x->rx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_dg00x *dg00x = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&dg00x->tx_stream);
}
static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_dg00x *dg00x = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&dg00x->rx_stream);
}
int snd_dg00x_create_pcm_devices(struct snd_dg00x *dg00x)
{
static const struct snd_pcm_ops capture_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_capture_hw_params,
.hw_free = pcm_capture_hw_free,
.prepare = pcm_capture_prepare,
.trigger = pcm_capture_trigger,
.pointer = pcm_capture_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
};
static const struct snd_pcm_ops playback_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_playback_hw_params,
.hw_free = pcm_playback_hw_free,
.prepare = pcm_playback_prepare,
.trigger = pcm_playback_trigger,
.pointer = pcm_playback_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(dg00x->card, dg00x->card->driver, 0, 1, 1, &pcm);
if (err < 0)
return err;
pcm->private_data = dg00x;
snprintf(pcm->name, sizeof(pcm->name),
"%s PCM", dg00x->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
return 0;
}
static int hw_rule_rate(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
const unsigned int *pcm_channels = rule->private;
struct snd_interval *r =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
const struct snd_interval *c =
hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_interval t = {
.min = UINT_MAX, .max = 0, .integer = 1
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
enum snd_ff_stream_mode mode;
int err;
err = snd_ff_stream_get_multiplier_mode(i, &mode);
if (err < 0)
continue;
if (!snd_interval_test(c, pcm_channels[mode]))
continue;
t.min = min(t.min, amdtp_rate_table[i]);
t.max = max(t.max, amdtp_rate_table[i]);
}
return snd_interval_refine(r, &t);
}
static int hw_rule_channels(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
const unsigned int *pcm_channels = rule->private;
struct snd_interval *c =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
const struct snd_interval *r =
hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval t = {
.min = UINT_MAX, .max = 0, .integer = 1
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
enum snd_ff_stream_mode mode;
int err;
err = snd_ff_stream_get_multiplier_mode(i, &mode);
if (err < 0)
continue;
if (!snd_interval_test(r, amdtp_rate_table[i]))
continue;
t.min = min(t.min, pcm_channels[mode]);
t.max = max(t.max, pcm_channels[mode]);
}
return snd_interval_refine(c, &t);
}
static void limit_channels_and_rates(struct snd_pcm_hardware *hw,
const unsigned int *pcm_channels)
{
unsigned int rate, channels;
int i;
hw->channels_min = UINT_MAX;
hw->channels_max = 0;
hw->rate_min = UINT_MAX;
hw->rate_max = 0;
for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
enum snd_ff_stream_mode mode;
int err;
err = snd_ff_stream_get_multiplier_mode(i, &mode);
if (err < 0)
continue;
channels = pcm_channels[mode];
if (pcm_channels[mode] == 0)
continue;
hw->channels_min = min(hw->channels_min, channels);
hw->channels_max = max(hw->channels_max, channels);
rate = amdtp_rate_table[i];
hw->rates |= snd_pcm_rate_to_rate_bit(rate);
hw->rate_min = min(hw->rate_min, rate);
hw->rate_max = max(hw->rate_max, rate);
}
}
static int pcm_init_hw_params(struct snd_ff *ff,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct amdtp_stream *s;
const unsigned int *pcm_channels;
int err;
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
s = &ff->tx_stream;
pcm_channels = ff->spec->pcm_capture_channels;
} else {
runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
s = &ff->rx_stream;
pcm_channels = ff->spec->pcm_playback_channels;
}
limit_channels_and_rates(&runtime->hw, pcm_channels);
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_channels, (void *)pcm_channels,
SNDRV_PCM_HW_PARAM_RATE, -1);
if (err < 0)
return err;
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
hw_rule_rate, (void *)pcm_channels,
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
if (err < 0)
return err;
return amdtp_ff_add_pcm_hw_constraints(s, runtime);
}
static int pcm_open(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
unsigned int rate;
enum snd_ff_clock_src src;
int i, err;
err = snd_ff_stream_lock_try(ff);
if (err < 0)
return err;
err = pcm_init_hw_params(ff, substream);
if (err < 0)
goto release_lock;
err = snd_ff_transaction_get_clock(ff, &rate, &src);
if (err < 0)
goto release_lock;
if (src != SND_FF_CLOCK_SRC_INTERNAL) {
for (i = 0; i < CIP_SFC_COUNT; ++i) {
if (amdtp_rate_table[i] == rate)
break;
}
/*
* The unit is configured at sampling frequency which packet
* streaming engine can't support.
*/
if (i >= CIP_SFC_COUNT) {
err = -EIO;
goto release_lock;
}
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
} else {
if (amdtp_stream_pcm_running(&ff->rx_stream) ||
amdtp_stream_pcm_running(&ff->tx_stream)) {
rate = amdtp_rate_table[ff->rx_stream.sfc];
substream->runtime->hw.rate_min = rate;
substream->runtime->hw.rate_max = rate;
}
}
snd_pcm_set_sync(substream);
return 0;
release_lock:
snd_ff_stream_lock_release(ff);
return err;
}
static int pcm_close(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
snd_ff_stream_lock_release(ff);
return 0;
}
static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_ff *ff = substream->private_data;
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&ff->mutex);
ff->substreams_counter++;
mutex_unlock(&ff->mutex);
}
return 0;
}
static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_ff *ff = substream->private_data;
int err;
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
mutex_lock(&ff->mutex);
ff->substreams_counter++;
mutex_unlock(&ff->mutex);
}
return 0;
}
static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
mutex_lock(&ff->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
ff->substreams_counter--;
snd_ff_stream_stop_duplex(ff);
mutex_unlock(&ff->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
mutex_lock(&ff->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
ff->substreams_counter--;
snd_ff_stream_stop_duplex(ff);
mutex_unlock(&ff->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int pcm_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
mutex_lock(&ff->mutex);
err = snd_ff_stream_start_duplex(ff, runtime->rate);
if (err >= 0)
amdtp_stream_pcm_prepare(&ff->tx_stream);
mutex_unlock(&ff->mutex);
return err;
}
static int pcm_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
mutex_lock(&ff->mutex);
err = snd_ff_stream_start_duplex(ff, runtime->rate);
if (err >= 0)
amdtp_stream_pcm_prepare(&ff->rx_stream);
mutex_unlock(&ff->mutex);
return err;
}
static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_ff *ff = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&ff->tx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&ff->tx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_ff *ff = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&ff->rx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&ff->rx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_ff *ff = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&ff->tx_stream);
}
static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_ff *ff = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&ff->rx_stream);
}
static int pcm_capture_ack(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
return amdtp_stream_pcm_ack(&ff->tx_stream);
}
static int pcm_playback_ack(struct snd_pcm_substream *substream)
{
struct snd_ff *ff = substream->private_data;
return amdtp_stream_pcm_ack(&ff->rx_stream);
}
int snd_ff_create_pcm_devices(struct snd_ff *ff)
{
static const struct snd_pcm_ops pcm_capture_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_capture_hw_params,
.hw_free = pcm_capture_hw_free,
.prepare = pcm_capture_prepare,
.trigger = pcm_capture_trigger,
.pointer = pcm_capture_pointer,
.ack = pcm_capture_ack,
.page = snd_pcm_lib_get_vmalloc_page,
};
static const struct snd_pcm_ops pcm_playback_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_playback_hw_params,
.hw_free = pcm_playback_hw_free,
.prepare = pcm_playback_prepare,
.trigger = pcm_playback_trigger,
.pointer = pcm_playback_pointer,
.ack = pcm_playback_ack,
.page = snd_pcm_lib_get_vmalloc_page,
};
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(ff->card, ff->card->driver, 0, 1, 1, &pcm);
if (err < 0)
return err;
pcm->private_data = ff;
snprintf(pcm->name, sizeof(pcm->name),
"%s PCM", ff->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
return 0;
}
static int
pcm_init_hw_params(struct snd_bebob *bebob,
struct snd_pcm_substream *substream)
{
int err;
static const struct snd_pcm_hardware hw = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_BATCH |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_SYNC_START |
SNDRV_PCM_INFO_FIFO_IN_FRAMES |
SNDRV_PCM_INFO_JOINT_DUPLEX |
/* for Open Sound System compatibility */
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_BLOCK_TRANSFER,
/* set up later */
.rates = 0,
.rate_min = UINT_MAX,
.rate_max = 0,
/* set up later */
.channels_min = UINT_MAX,
.channels_max = 0,
.buffer_bytes_max = 1024 * 1024 * 1024,
.period_bytes_min = 256,
.period_bytes_max = 1024 * 1024 * 1024 / 2,
.periods_min = 2,
.periods_max = 32,
.fifo_size = 0,
};
substream->runtime->hw = hw;
substream->runtime->delay = substream->runtime->hw.fifo_size;
/* add rule between channels and sampling rate */
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
prepare_rates(&substream->runtime->hw,
bebob->tx_stream_formations);
prepare_channels(&substream->runtime->hw,
bebob->tx_stream_formations);
substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE;
snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_capture_channels, bebob,
SNDRV_PCM_HW_PARAM_RATE, -1);
snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
hw_rule_capture_rate, bebob,
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
} else {
prepare_rates(&substream->runtime->hw,
bebob->rx_stream_formations);
prepare_channels(&substream->runtime->hw,
bebob->rx_stream_formations);
substream->runtime->hw.formats = AMDTP_OUT_PCM_FORMAT_BITS;
snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
hw_rule_playback_channels, bebob,
SNDRV_PCM_HW_PARAM_RATE, -1);
snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
hw_rule_playback_rate, bebob,
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
}
/* AM824 in IEC 61883-6 can deliver 24bit data */
err = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 32, 24);
if (err < 0)
goto end;
/*
* AMDTP functionality in firewire-lib require periods to be aligned to
* 16 bit, or 24bit inner 32bit.
*/
err = snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
if (err < 0)
goto end;
/* time for period constraint */
err = snd_pcm_hw_constraint_minmax(substream->runtime,
SNDRV_PCM_HW_PARAM_PERIOD_TIME,
500, UINT_MAX);
if (err < 0)
goto end;
err = 0;
end:
return err;
}
static int
pcm_open(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
struct snd_bebob_rate_spec *spec = bebob->spec->rate;
unsigned int sampling_rate;
bool internal;
int err;
err = snd_bebob_stream_lock_try(bebob);
if (err < 0)
goto end;
err = pcm_init_hw_params(bebob, substream);
if (err < 0)
goto err_locked;
err = snd_bebob_stream_check_internal_clock(bebob, &internal);
if (err < 0)
goto err_locked;
/*
* When source of clock is internal or any PCM stream are running,
* the available sampling rate is limited at current sampling rate.
*/
if (!internal ||
amdtp_stream_pcm_running(&bebob->tx_stream) ||
amdtp_stream_pcm_running(&bebob->rx_stream)) {
err = spec->get(bebob, &sampling_rate);
if (err < 0)
goto err_locked;
substream->runtime->hw.rate_min = sampling_rate;
substream->runtime->hw.rate_max = sampling_rate;
}
snd_pcm_set_sync(substream);
end:
return err;
err_locked:
snd_bebob_stream_lock_release(bebob);
return err;
}
static int
pcm_close(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
snd_bebob_stream_lock_release(bebob);
return 0;
}
static int
pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
return snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
}
static int
pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
snd_bebob_stream_stop_duplex(bebob);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int
pcm_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
err = snd_bebob_stream_start_duplex(bebob, &bebob->tx_stream,
runtime->rate);
if (err < 0)
goto end;
amdtp_stream_set_pcm_format(&bebob->tx_stream, runtime->format);
amdtp_stream_pcm_prepare(&bebob->tx_stream);
end:
return err;
}
static int
pcm_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_bebob *bebob = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
err = snd_bebob_stream_start_duplex(bebob, &bebob->rx_stream,
runtime->rate);
if (err < 0)
goto end;
amdtp_stream_set_pcm_format(&bebob->rx_stream, runtime->format);
amdtp_stream_pcm_prepare(&bebob->rx_stream);
end:
return err;
}
static int
pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_bebob *bebob = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&bebob->tx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&bebob->tx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static int
pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_bebob *bebob = substream->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
amdtp_stream_pcm_trigger(&bebob->rx_stream, substream);
break;
case SNDRV_PCM_TRIGGER_STOP:
amdtp_stream_pcm_trigger(&bebob->rx_stream, NULL);
break;
default:
return -EINVAL;
}
return 0;
}
static snd_pcm_uframes_t
pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_bebob *bebob = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&bebob->tx_stream);
}
static snd_pcm_uframes_t
pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
{
struct snd_bebob *bebob = sbstrm->private_data;
return amdtp_stream_pcm_pointer(&bebob->rx_stream);
}
static struct snd_pcm_ops pcm_capture_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_capture_prepare,
.trigger = pcm_capture_trigger,
.pointer = pcm_capture_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
};
static struct snd_pcm_ops pcm_playback_ops = {
.open = pcm_open,
.close = pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = pcm_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_playback_prepare,
.trigger = pcm_playback_trigger,
.pointer = pcm_playback_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
int snd_bebob_create_pcm_devices(struct snd_bebob *bebob)
{
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(bebob->card, bebob->card->driver, 0, 1, 1, &pcm);
if (err < 0)
goto end;
pcm->private_data = bebob;
snprintf(pcm->name, sizeof(pcm->name),
"%s PCM", bebob->card->shortname);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
end:
return err;
}
static int snd_stm_pcm_player_open(struct snd_pcm_substream *substream)
{
int result;
struct snd_stm_pcm_player *pcm_player =
snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
snd_stm_printd(1, "snd_stm_pcm_player_open(substream=0x%p)\n",
substream);
BUG_ON(!pcm_player);
BUG_ON(!snd_stm_magic_valid(pcm_player));
BUG_ON(!runtime);
snd_pcm_set_sync(substream); /* TODO: ??? */
/* Get attached converters handle */
pcm_player->conv_group =
snd_stm_conv_request_group(pcm_player->conv_source);
if (pcm_player->conv_group)
snd_stm_printd(1, "'%s' is attached to '%s' converter(s)...\n",
dev_name(pcm_player->device),
snd_stm_conv_get_name(pcm_player->conv_group));
else
snd_stm_printd(1, "No converter attached to '%s'!\n",
dev_name(pcm_player->device));
/* Set up constraints & pass hardware capabilities info to ALSA */
result = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
&pcm_player->channels_constraint);
if (result < 0) {
snd_stm_printe("Can't set channels constraint!\n");
return result;
}
/* It is better when buffer size is an integer multiple of period
* size... Such thing will ensure this :-O */
result = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (result < 0) {
snd_stm_printe("Can't set periods constraint!\n");
return result;
}
/* Make the period (so buffer as well) length (in bytes) a multiply
* of a FDMA transfer bytes (which varies depending on channels
* number and sample bytes) */
result = snd_stm_pcm_hw_constraint_transfer_bytes(runtime,
pcm_player->fdma_max_transfer_size * 4);
if (result < 0) {
snd_stm_printe("Can't set buffer bytes constraint!\n");
return result;
}
runtime->hw = snd_stm_pcm_player_hw;
/* Interrupt handler will need the substream pointer... */
pcm_player->substream = substream;
return 0;
}
