416 lines
11 KiB
C
416 lines
11 KiB
C
|
/*
|
||
|
|
* fireworks_pcm.c - a part of driver for Fireworks based devices
|
||
|
|
*
|
||
|
|
* Copyright (c) 2009-2010 Clemens Ladisch
|
||
|
|
* Copyright (c) 2013-2014 Takashi Sakamoto
|
||
|
|
*
|
||
|
|
* Licensed under the terms of the GNU General Public License, version 2.
|
||
|
|
*/
|
||
|
|
#include "./fireworks.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NOTE:
|
||
|
|
* Fireworks changes its AMDTP channels for PCM data according to its sampling
|
||
|
|
* rate. There are three modes. Here _XX is either _rx or _tx.
|
||
|
|
* 0: 32.0- 48.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels applied
|
||
|
|
* 1: 88.2- 96.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_2x applied
|
||
|
|
* 2: 176.4-192.0 kHz then snd_efw_hwinfo.amdtp_XX_pcm_channels_4x applied
|
||
|
|
*
|
||
|
|
* The number of PCM channels for analog input and output are always fixed but
|
||
|
|
* the number of PCM channels for digital input and output are differed.
|
||
|
|
*
|
||
|
|
* Additionally, according to "AudioFire Owner's Manual Version 2.2", in some
|
||
|
|
* model, the number of PCM channels for digital input has more restriction
|
||
|
|
* depending on which digital interface is selected.
|
||
|
|
* - S/PDIF coaxial and optical : use input 1-2
|
||
|
|
* - ADAT optical at 32.0-48.0 kHz : use input 1-8
|
||
|
|
* - ADAT optical at 88.2-96.0 kHz : use input 1-4 (S/MUX format)
|
||
|
|
*
|
||
|
|
* The data in AMDTP channels for blank PCM channels are zero.
|
||
|
|
*/
|
||
|
|
static const unsigned int freq_table[] = {
|
||
|
|
/* multiplier mode 0 */
|
||
|
|
[0] = 32000,
|
||
|
|
[1] = 44100,
|
||
|
|
[2] = 48000,
|
||
|
|
/* multiplier mode 1 */
|
||
|
|
[3] = 88200,
|
||
|
|
[4] = 96000,
|
||
|
|
/* multiplier mode 2 */
|
||
|
|
[5] = 176400,
|
||
|
|
[6] = 192000,
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline unsigned int
|
||
|
|
get_multiplier_mode_with_index(unsigned int index)
|
||
|
|
{
|
||
|
|
return ((int)index - 1) / 2;
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_efw_get_multiplier_mode(unsigned int sampling_rate, unsigned int *mode)
|
||
|
|
{
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
|
||
|
|
if (freq_table[i] == sampling_rate) {
|
||
|
|
*mode = get_multiplier_mode_with_index(i);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
|
||
|
|
{
|
||
|
|
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, mode;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
|
||
|
|
mode = get_multiplier_mode_with_index(i);
|
||
|
|
if (!snd_interval_test(c, pcm_channels[mode]))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
t.min = min(t.min, freq_table[i]);
|
||
|
|
t.max = max(t.max, freq_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)
|
||
|
|
{
|
||
|
|
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, mode;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
|
||
|
|
mode = get_multiplier_mode_with_index(i);
|
||
|
|
if (!snd_interval_test(r, freq_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(struct snd_pcm_hardware *hw, unsigned int *pcm_channels)
|
||
|
|
{
|
||
|
|
unsigned int i, mode;
|
||
|
|
|
||
|
|
hw->channels_min = UINT_MAX;
|
||
|
|
hw->channels_max = 0;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
|
||
|
|
mode = get_multiplier_mode_with_index(i);
|
||
|
|
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]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
pcm_init_hw_params(struct snd_efw *efw,
|
||
|
|
struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
|
struct amdtp_stream *s;
|
||
|
|
unsigned int *pcm_channels;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
|
||
|
|
runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
|
||
|
|
s = &efw->tx_stream;
|
||
|
|
pcm_channels = efw->pcm_capture_channels;
|
||
|
|
} else {
|
||
|
|
runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
|
||
|
|
s = &efw->rx_stream;
|
||
|
|
pcm_channels = efw->pcm_playback_channels;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* limit rates */
|
||
|
|
runtime->hw.rates = efw->supported_sampling_rate,
|
||
|
|
snd_pcm_limit_hw_rates(runtime);
|
||
|
|
|
||
|
|
limit_channels(&runtime->hw, pcm_channels);
|
||
|
|
|
||
|
|
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
|
||
|
|
hw_rule_channels, pcm_channels,
|
||
|
|
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, pcm_channels,
|
||
|
|
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_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 pcm_close(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = substream->private_data;
|
||
|
|
snd_efw_stream_lock_release(efw);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_pcm_hw_params *hw_params)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = 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(&efw->mutex);
|
||
|
|
efw->capture_substreams++;
|
||
|
|
mutex_unlock(&efw->mutex);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_pcm_hw_params *hw_params)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = 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(&efw->mutex);
|
||
|
|
efw->playback_substreams++;
|
||
|
|
mutex_unlock(&efw->mutex);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = substream->private_data;
|
||
|
|
|
||
|
|
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) {
|
||
|
|
mutex_lock(&efw->mutex);
|
||
|
|
efw->capture_substreams--;
|
||
|
|
mutex_unlock(&efw->mutex);
|
||
|
|
}
|
||
|
|
|
||
|
|
snd_efw_stream_stop_duplex(efw);
|
||
|
|
|
||
|
|
return snd_pcm_lib_free_vmalloc_buffer(substream);
|
||
|
|
}
|
||
|
|
static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = substream->private_data;
|
||
|
|
|
||
|
|
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) {
|
||
|
|
mutex_lock(&efw->mutex);
|
||
|
|
efw->playback_substreams--;
|
||
|
|
mutex_unlock(&efw->mutex);
|
||
|
|
}
|
||
|
|
|
||
|
|
snd_efw_stream_stop_duplex(efw);
|
||
|
|
|
||
|
|
return snd_pcm_lib_free_vmalloc_buffer(substream);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_capture_prepare(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = substream->private_data;
|
||
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = snd_efw_stream_start_duplex(efw, runtime->rate);
|
||
|
|
if (err >= 0)
|
||
|
|
amdtp_stream_pcm_prepare(&efw->tx_stream);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
static int pcm_playback_prepare(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = substream->private_data;
|
||
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = snd_efw_stream_start_duplex(efw, runtime->rate);
|
||
|
|
if (err >= 0)
|
||
|
|
amdtp_stream_pcm_prepare(&efw->rx_stream);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = substream->private_data;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case SNDRV_PCM_TRIGGER_START:
|
||
|
|
amdtp_stream_pcm_trigger(&efw->tx_stream, substream);
|
||
|
|
break;
|
||
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
||
|
|
amdtp_stream_pcm_trigger(&efw->tx_stream, NULL);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = substream->private_data;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case SNDRV_PCM_TRIGGER_START:
|
||
|
|
amdtp_stream_pcm_trigger(&efw->rx_stream, substream);
|
||
|
|
break;
|
||
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
||
|
|
amdtp_stream_pcm_trigger(&efw->rx_stream, NULL);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = sbstrm->private_data;
|
||
|
|
return amdtp_stream_pcm_pointer(&efw->tx_stream);
|
||
|
|
}
|
||
|
|
static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = sbstrm->private_data;
|
||
|
|
return amdtp_stream_pcm_pointer(&efw->rx_stream);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_capture_ack(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = substream->private_data;
|
||
|
|
|
||
|
|
return amdtp_stream_pcm_ack(&efw->tx_stream);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_playback_ack(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_efw *efw = substream->private_data;
|
||
|
|
|
||
|
|
return amdtp_stream_pcm_ack(&efw->rx_stream);
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_efw_create_pcm_devices(struct snd_efw *efw)
|
||
|
|
{
|
||
|
|
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(efw->card, efw->card->driver, 0, 1, 1, &pcm);
|
||
|
|
if (err < 0)
|
||
|
|
goto end;
|
||
|
|
|
||
|
|
pcm->private_data = efw;
|
||
|
|
snprintf(pcm->name, sizeof(pcm->name), "%s PCM", efw->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;
|
||
|
|
}
|
||
|
|
|