linux_dsm_epyc7002/sound/firewire/fireworks/fireworks_pcm.c
Takashi Iwai d45b3aaea2 ALSA: firewire: Drop superfluous ioctl PCM ops
All the PCM ioctl ops of ALSA FireWire drivers do nothing but calling
the default handler.

Now PCM core accepts NULL as the default ioctl ops(*), so let's drop
altogether.

(*) commit fc033cbf6f ("ALSA: pcm: Allow NULL ioctl ops")

Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20191210061145.24641-6-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-12-11 07:25:27 +01:00

408 lines
10 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* fireworks_pcm.c - a part of driver for Fireworks based devices
*
* Copyright (c) 2009-2010 Clemens Ladisch
* Copyright (c) 2013-2014 Takashi Sakamoto
*/
#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;
struct amdtp_domain *d = &efw->domain;
enum snd_efw_clock_source clock_source;
int err;
err = snd_efw_stream_lock_try(efw);
if (err < 0)
return err;
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;
mutex_lock(&efw->mutex);
// When source of clock is not internal or any stream is reserved for
// transmission of PCM frames, the available sampling rate is limited
// at current one.
if ((clock_source != SND_EFW_CLOCK_SOURCE_INTERNAL) ||
(efw->substreams_counter > 0 && d->events_per_period > 0)) {
unsigned int frames_per_period = d->events_per_period;
unsigned int frames_per_buffer = d->events_per_buffer;
unsigned int sampling_rate;
err = snd_efw_command_get_sampling_rate(efw, &sampling_rate);
if (err < 0) {
mutex_unlock(&efw->mutex);
goto err_locked;
}
substream->runtime->hw.rate_min = sampling_rate;
substream->runtime->hw.rate_max = sampling_rate;
if (frames_per_period > 0) {
err = snd_pcm_hw_constraint_minmax(substream->runtime,
SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
frames_per_period, frames_per_period);
if (err < 0) {
mutex_unlock(&efw->mutex);
goto err_locked;
}
err = snd_pcm_hw_constraint_minmax(substream->runtime,
SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
frames_per_buffer, frames_per_buffer);
if (err < 0) {
mutex_unlock(&efw->mutex);
goto err_locked;
}
}
}
mutex_unlock(&efw->mutex);
snd_pcm_set_sync(substream);
return 0;
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_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_efw *efw = substream->private_data;
int err = 0;
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
unsigned int rate = params_rate(hw_params);
unsigned int frames_per_period = params_period_size(hw_params);
unsigned int frames_per_buffer = params_buffer_size(hw_params);
mutex_lock(&efw->mutex);
err = snd_efw_stream_reserve_duplex(efw, rate,
frames_per_period, frames_per_buffer);
if (err >= 0)
++efw->substreams_counter;
mutex_unlock(&efw->mutex);
}
return err;
}
static int pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_efw *efw = substream->private_data;
mutex_lock(&efw->mutex);
if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
--efw->substreams_counter;
snd_efw_stream_stop_duplex(efw);
mutex_unlock(&efw->mutex);
return 0;
}
static int pcm_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_efw *efw = substream->private_data;
int err;
err = snd_efw_stream_start_duplex(efw);
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;
int err;
err = snd_efw_stream_start_duplex(efw);
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_domain_stream_pcm_pointer(&efw->domain, &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_domain_stream_pcm_pointer(&efw->domain, &efw->rx_stream);
}
static int pcm_capture_ack(struct snd_pcm_substream *substream)
{
struct snd_efw *efw = substream->private_data;
return amdtp_domain_stream_pcm_ack(&efw->domain, &efw->tx_stream);
}
static int pcm_playback_ack(struct snd_pcm_substream *substream)
{
struct snd_efw *efw = substream->private_data;
return amdtp_domain_stream_pcm_ack(&efw->domain, &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,
.hw_params = pcm_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_capture_prepare,
.trigger = pcm_capture_trigger,
.pointer = pcm_capture_pointer,
.ack = pcm_capture_ack,
};
static const struct snd_pcm_ops playback_ops = {
.open = pcm_open,
.close = pcm_close,
.hw_params = pcm_hw_params,
.hw_free = pcm_hw_free,
.prepare = pcm_playback_prepare,
.trigger = pcm_playback_trigger,
.pointer = pcm_playback_pointer,
.ack = pcm_playback_ack,
};
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);
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
end:
return err;
}