371 lines
8.8 KiB
C
371 lines
8.8 KiB
C
/*
|
|
* digi00x-pcm.c - a part of driver for Digidesign Digi 002/003 family
|
|
*
|
|
* Copyright (c) 2014-2015 Takashi Sakamoto
|
|
*
|
|
* Licensed under the terms of the GNU General Public License, version 2.
|
|
*/
|
|
|
|
#include "digi00x.h"
|
|
|
|
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)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct snd_pcm_hardware *hw = &runtime->hw;
|
|
struct amdtp_stream *s;
|
|
int err;
|
|
|
|
|
|
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_S32;
|
|
s = &dg00x->rx_stream;
|
|
}
|
|
|
|
hw->channels_min = 10;
|
|
hw->channels_max = 18;
|
|
|
|
hw->rates = SNDRV_PCM_RATE_44100 |
|
|
SNDRV_PCM_RATE_48000 |
|
|
SNDRV_PCM_RATE_88200 |
|
|
SNDRV_PCM_RATE_96000;
|
|
snd_pcm_limit_hw_rates(runtime);
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static int pcm_capture_ack(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_dg00x *dg00x = substream->private_data;
|
|
|
|
return amdtp_stream_pcm_ack(&dg00x->tx_stream);
|
|
}
|
|
|
|
static int pcm_playback_ack(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_dg00x *dg00x = substream->private_data;
|
|
|
|
return amdtp_stream_pcm_ack(&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,
|
|
.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(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;
|
|
}
|