434 lines
11 KiB
C
434 lines
11 KiB
C
|
/*
|
||
|
|
* oxfw_pcm.c - a part of driver for OXFW970/971 based devices
|
||
|
|
*
|
||
|
|
* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
|
||
|
|
* Licensed under the terms of the GNU General Public License, version 2.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "oxfw.h"
|
||
|
|
|
||
|
|
static int hw_rule_rate(struct snd_pcm_hw_params *params,
|
||
|
|
struct snd_pcm_hw_rule *rule)
|
||
|
|
{
|
||
|
|
u8 **formats = 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
|
||
|
|
};
|
||
|
|
struct snd_oxfw_stream_formation formation;
|
||
|
|
int i, err;
|
||
|
|
|
||
|
|
for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
|
||
|
|
if (formats[i] == NULL)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
err = snd_oxfw_stream_parse_format(formats[i], &formation);
|
||
|
|
if (err < 0)
|
||
|
|
continue;
|
||
|
|
if (!snd_interval_test(c, formation.pcm))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
t.min = min(t.min, formation.rate);
|
||
|
|
t.max = max(t.max, formation.rate);
|
||
|
|
|
||
|
|
}
|
||
|
|
return snd_interval_refine(r, &t);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hw_rule_channels(struct snd_pcm_hw_params *params,
|
||
|
|
struct snd_pcm_hw_rule *rule)
|
||
|
|
{
|
||
|
|
u8 **formats = 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_oxfw_stream_formation formation;
|
||
|
|
int i, j, err;
|
||
|
|
unsigned int count, list[SND_OXFW_STREAM_FORMAT_ENTRIES] = {0};
|
||
|
|
|
||
|
|
count = 0;
|
||
|
|
for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
|
||
|
|
if (formats[i] == NULL)
|
||
|
|
break;
|
||
|
|
|
||
|
|
err = snd_oxfw_stream_parse_format(formats[i], &formation);
|
||
|
|
if (err < 0)
|
||
|
|
continue;
|
||
|
|
if (!snd_interval_test(r, formation.rate))
|
||
|
|
continue;
|
||
|
|
if (list[count] == formation.pcm)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
for (j = 0; j < ARRAY_SIZE(list); j++) {
|
||
|
|
if (list[j] == formation.pcm)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (j == ARRAY_SIZE(list)) {
|
||
|
|
list[count] = formation.pcm;
|
||
|
|
if (++count == ARRAY_SIZE(list))
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return snd_interval_list(c, count, list, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void limit_channels_and_rates(struct snd_pcm_hardware *hw, u8 **formats)
|
||
|
|
{
|
||
|
|
struct snd_oxfw_stream_formation formation;
|
||
|
|
int i, err;
|
||
|
|
|
||
|
|
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_OXFW_STREAM_FORMAT_ENTRIES; i++) {
|
||
|
|
if (formats[i] == NULL)
|
||
|
|
break;
|
||
|
|
|
||
|
|
err = snd_oxfw_stream_parse_format(formats[i], &formation);
|
||
|
|
if (err < 0)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
hw->channels_min = min(hw->channels_min, formation.pcm);
|
||
|
|
hw->channels_max = max(hw->channels_max, formation.pcm);
|
||
|
|
|
||
|
|
hw->rate_min = min(hw->rate_min, formation.rate);
|
||
|
|
hw->rate_max = max(hw->rate_max, formation.rate);
|
||
|
|
hw->rates |= snd_pcm_rate_to_rate_bit(formation.rate);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
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; /* bytes 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_params(struct snd_oxfw *oxfw,
|
||
|
|
struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
|
u8 **formats;
|
||
|
|
struct amdtp_stream *stream;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
runtime->hw.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;
|
||
|
|
|
||
|
|
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
|
||
|
|
runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
|
||
|
|
stream = &oxfw->tx_stream;
|
||
|
|
formats = oxfw->tx_stream_formats;
|
||
|
|
} else {
|
||
|
|
runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
|
||
|
|
stream = &oxfw->rx_stream;
|
||
|
|
formats = oxfw->rx_stream_formats;
|
||
|
|
}
|
||
|
|
|
||
|
|
limit_channels_and_rates(&runtime->hw, formats);
|
||
|
|
limit_period_and_buffer(&runtime->hw);
|
||
|
|
|
||
|
|
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
|
||
|
|
hw_rule_channels, formats,
|
||
|
|
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, formats,
|
||
|
|
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
|
||
|
|
if (err < 0)
|
||
|
|
goto end;
|
||
|
|
|
||
|
|
err = amdtp_am824_add_pcm_hw_constraints(stream, runtime);
|
||
|
|
end:
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int limit_to_current_params(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = substream->private_data;
|
||
|
|
struct snd_oxfw_stream_formation formation;
|
||
|
|
enum avc_general_plug_dir dir;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
|
||
|
|
dir = AVC_GENERAL_PLUG_DIR_OUT;
|
||
|
|
else
|
||
|
|
dir = AVC_GENERAL_PLUG_DIR_IN;
|
||
|
|
|
||
|
|
err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation);
|
||
|
|
if (err < 0)
|
||
|
|
goto end;
|
||
|
|
|
||
|
|
substream->runtime->hw.channels_min = formation.pcm;
|
||
|
|
substream->runtime->hw.channels_max = formation.pcm;
|
||
|
|
substream->runtime->hw.rate_min = formation.rate;
|
||
|
|
substream->runtime->hw.rate_max = formation.rate;
|
||
|
|
end:
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_open(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = substream->private_data;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = snd_oxfw_stream_lock_try(oxfw);
|
||
|
|
if (err < 0)
|
||
|
|
goto end;
|
||
|
|
|
||
|
|
err = init_hw_params(oxfw, substream);
|
||
|
|
if (err < 0)
|
||
|
|
goto err_locked;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* When any PCM streams are already running, the available sampling
|
||
|
|
* rate is limited at current value.
|
||
|
|
*/
|
||
|
|
if (amdtp_stream_pcm_running(&oxfw->tx_stream) ||
|
||
|
|
amdtp_stream_pcm_running(&oxfw->rx_stream)) {
|
||
|
|
err = limit_to_current_params(substream);
|
||
|
|
if (err < 0)
|
||
|
|
goto end;
|
||
|
|
}
|
||
|
|
|
||
|
|
snd_pcm_set_sync(substream);
|
||
|
|
end:
|
||
|
|
return err;
|
||
|
|
err_locked:
|
||
|
|
snd_oxfw_stream_lock_release(oxfw);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_close(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = substream->private_data;
|
||
|
|
|
||
|
|
snd_oxfw_stream_lock_release(oxfw);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_pcm_hw_params *hw_params)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = 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(&oxfw->mutex);
|
||
|
|
oxfw->capture_substreams++;
|
||
|
|
mutex_unlock(&oxfw->mutex);
|
||
|
|
}
|
||
|
|
|
||
|
|
amdtp_am824_set_pcm_format(&oxfw->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_oxfw *oxfw = 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(&oxfw->mutex);
|
||
|
|
oxfw->playback_substreams++;
|
||
|
|
mutex_unlock(&oxfw->mutex);
|
||
|
|
}
|
||
|
|
|
||
|
|
amdtp_am824_set_pcm_format(&oxfw->rx_stream, params_format(hw_params));
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = substream->private_data;
|
||
|
|
|
||
|
|
mutex_lock(&oxfw->mutex);
|
||
|
|
|
||
|
|
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
|
||
|
|
oxfw->capture_substreams--;
|
||
|
|
|
||
|
|
snd_oxfw_stream_stop_simplex(oxfw, &oxfw->tx_stream);
|
||
|
|
|
||
|
|
mutex_unlock(&oxfw->mutex);
|
||
|
|
|
||
|
|
return snd_pcm_lib_free_vmalloc_buffer(substream);
|
||
|
|
}
|
||
|
|
static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = substream->private_data;
|
||
|
|
|
||
|
|
mutex_lock(&oxfw->mutex);
|
||
|
|
|
||
|
|
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
|
||
|
|
oxfw->playback_substreams--;
|
||
|
|
|
||
|
|
snd_oxfw_stream_stop_simplex(oxfw, &oxfw->rx_stream);
|
||
|
|
|
||
|
|
mutex_unlock(&oxfw->mutex);
|
||
|
|
|
||
|
|
return snd_pcm_lib_free_vmalloc_buffer(substream);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_capture_prepare(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = substream->private_data;
|
||
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
mutex_lock(&oxfw->mutex);
|
||
|
|
err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->tx_stream,
|
||
|
|
runtime->rate, runtime->channels);
|
||
|
|
mutex_unlock(&oxfw->mutex);
|
||
|
|
if (err < 0)
|
||
|
|
goto end;
|
||
|
|
|
||
|
|
amdtp_stream_pcm_prepare(&oxfw->tx_stream);
|
||
|
|
end:
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
static int pcm_playback_prepare(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = substream->private_data;
|
||
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
mutex_lock(&oxfw->mutex);
|
||
|
|
err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->rx_stream,
|
||
|
|
runtime->rate, runtime->channels);
|
||
|
|
mutex_unlock(&oxfw->mutex);
|
||
|
|
if (err < 0)
|
||
|
|
goto end;
|
||
|
|
|
||
|
|
amdtp_stream_pcm_prepare(&oxfw->rx_stream);
|
||
|
|
end:
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = substream->private_data;
|
||
|
|
struct snd_pcm_substream *pcm;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case SNDRV_PCM_TRIGGER_START:
|
||
|
|
pcm = substream;
|
||
|
|
break;
|
||
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
||
|
|
pcm = NULL;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
amdtp_stream_pcm_trigger(&oxfw->tx_stream, pcm);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = substream->private_data;
|
||
|
|
struct snd_pcm_substream *pcm;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case SNDRV_PCM_TRIGGER_START:
|
||
|
|
pcm = substream;
|
||
|
|
break;
|
||
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
||
|
|
pcm = NULL;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
amdtp_stream_pcm_trigger(&oxfw->rx_stream, pcm);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstm)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = sbstm->private_data;
|
||
|
|
|
||
|
|
return amdtp_stream_pcm_pointer(&oxfw->tx_stream);
|
||
|
|
}
|
||
|
|
static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstm)
|
||
|
|
{
|
||
|
|
struct snd_oxfw *oxfw = sbstm->private_data;
|
||
|
|
|
||
|
|
return amdtp_stream_pcm_pointer(&oxfw->rx_stream);
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_oxfw_create_pcm(struct snd_oxfw *oxfw)
|
||
|
|
{
|
||
|
|
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,
|
||
|
|
.mmap = snd_pcm_lib_mmap_vmalloc,
|
||
|
|
};
|
||
|
|
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;
|
||
|
|
unsigned int cap = 0;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (oxfw->has_output)
|
||
|
|
cap = 1;
|
||
|
|
|
||
|
|
err = snd_pcm_new(oxfw->card, oxfw->card->driver, 0, 1, cap, &pcm);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
pcm->private_data = oxfw;
|
||
|
|
strcpy(pcm->name, oxfw->card->shortname);
|
||
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
|
||
|
|
if (cap > 0)
|
||
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|