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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /sound/firewire/dice/dice-pcm.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/firewire/dice/dice-pcm.c')
-rw-r--r--sound/firewire/dice/dice-pcm.c459
1 files changed, 459 insertions, 0 deletions
diff --git a/sound/firewire/dice/dice-pcm.c b/sound/firewire/dice/dice-pcm.c
new file mode 100644
index 000000000..d64366217
--- /dev/null
+++ b/sound/firewire/dice/dice-pcm.c
@@ -0,0 +1,459 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * dice_pcm.c - a part of driver for DICE based devices
+ *
+ * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
+ * Copyright (c) 2014 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+#include "dice.h"
+
+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;
+ unsigned int index = substream->pcm->device;
+
+ 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 *pcm_channels;
+ enum snd_dice_rate_mode mode;
+ unsigned int i, rate;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ pcm_channels = dice->tx_pcm_chs[index];
+ else
+ pcm_channels = dice->rx_pcm_chs[index];
+
+ 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;
+ unsigned int index = substream->pcm->device;
+
+ 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 *pcm_channels;
+ enum snd_dice_rate_mode mode;
+ unsigned int i, rate;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ pcm_channels = dice->tx_pcm_chs[index];
+ else
+ pcm_channels = dice->rx_pcm_chs[index];
+
+ 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 int limit_channels_and_rates(struct snd_dice *dice,
+ struct snd_pcm_runtime *runtime,
+ enum amdtp_stream_direction dir,
+ unsigned int index)
+{
+ struct snd_pcm_hardware *hw = &runtime->hw;
+ unsigned int *pcm_channels;
+ unsigned int i;
+
+ if (dir == AMDTP_IN_STREAM)
+ pcm_channels = dice->tx_pcm_chs[index];
+ else
+ pcm_channels = dice->rx_pcm_chs[index];
+
+ hw->channels_min = UINT_MAX;
+ hw->channels_max = 0;
+
+ for (i = 0; i < ARRAY_SIZE(snd_dice_rates); ++i) {
+ enum snd_dice_rate_mode mode;
+ unsigned int rate, channels;
+
+ 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);
+
+ channels = pcm_channels[mode];
+ if (channels == 0)
+ continue;
+ hw->channels_min = min(hw->channels_min, channels);
+ hw->channels_max = max(hw->channels_max, channels);
+ }
+
+ snd_pcm_limit_hw_rates(runtime);
+
+ return 0;
+}
+
+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;
+ unsigned int index = substream->pcm->device;
+ enum amdtp_stream_direction dir;
+ struct amdtp_stream *stream;
+ int err;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ hw->formats = AM824_IN_PCM_FORMAT_BITS;
+ dir = AMDTP_IN_STREAM;
+ stream = &dice->tx_stream[index];
+ } else {
+ hw->formats = AM824_OUT_PCM_FORMAT_BITS;
+ dir = AMDTP_OUT_STREAM;
+ stream = &dice->rx_stream[index];
+ }
+
+ err = limit_channels_and_rates(dice, substream->runtime, dir,
+ index);
+ if (err < 0)
+ return err;
+
+ 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)
+ return err;
+ 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)
+ return err;
+
+ return amdtp_am824_add_pcm_hw_constraints(stream, runtime);
+}
+
+static int pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_domain *d = &dice->domain;
+ unsigned int source;
+ bool internal;
+ int err;
+
+ err = snd_dice_stream_lock_try(dice);
+ if (err < 0)
+ return err;
+
+ 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;
+ }
+
+ mutex_lock(&dice->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 (!internal ||
+ (dice->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 rate;
+
+ err = snd_dice_transaction_get_rate(dice, &rate);
+ if (err < 0) {
+ mutex_unlock(&dice->mutex);
+ goto err_locked;
+ }
+
+ substream->runtime->hw.rate_min = rate;
+ substream->runtime->hw.rate_max = rate;
+
+ if (frames_per_period > 0) {
+ // For double_pcm_frame quirk.
+ if (rate > 96000 && !dice->disable_double_pcm_frames) {
+ frames_per_period *= 2;
+ frames_per_buffer *= 2;
+ }
+
+ 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(&dice->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(&dice->mutex);
+ goto err_locked;
+ }
+ }
+ }
+
+ mutex_unlock(&dice->mutex);
+
+ snd_pcm_set_sync(substream);
+
+ return 0;
+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 pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_dice *dice = substream->private_data;
+ int err = 0;
+
+ if (substream->runtime->state == SNDRV_PCM_STATE_OPEN) {
+ unsigned int rate = params_rate(hw_params);
+ unsigned int events_per_period = params_period_size(hw_params);
+ unsigned int events_per_buffer = params_buffer_size(hw_params);
+
+ mutex_lock(&dice->mutex);
+ // For double_pcm_frame quirk.
+ if (rate > 96000 && !dice->disable_double_pcm_frames) {
+ events_per_period /= 2;
+ events_per_buffer /= 2;
+ }
+ err = snd_dice_stream_reserve_duplex(dice, rate,
+ events_per_period, events_per_buffer);
+ if (err >= 0)
+ ++dice->substreams_counter;
+ mutex_unlock(&dice->mutex);
+ }
+
+ return err;
+}
+
+static int pcm_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+
+ mutex_lock(&dice->mutex);
+
+ if (substream->runtime->state != SNDRV_PCM_STATE_OPEN)
+ --dice->substreams_counter;
+
+ snd_dice_stream_stop_duplex(dice);
+
+ mutex_unlock(&dice->mutex);
+
+ return 0;
+}
+
+static int capture_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
+ int err;
+
+ mutex_lock(&dice->mutex);
+ err = snd_dice_stream_start_duplex(dice);
+ mutex_unlock(&dice->mutex);
+ if (err >= 0)
+ amdtp_stream_pcm_prepare(stream);
+
+ return 0;
+}
+static int playback_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
+ int err;
+
+ mutex_lock(&dice->mutex);
+ err = snd_dice_stream_start_duplex(dice);
+ mutex_unlock(&dice->mutex);
+ if (err >= 0)
+ amdtp_stream_pcm_prepare(stream);
+
+ return err;
+}
+
+static int capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ amdtp_stream_pcm_trigger(stream, substream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ amdtp_stream_pcm_trigger(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;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ amdtp_stream_pcm_trigger(stream, substream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ amdtp_stream_pcm_trigger(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;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
+
+ return amdtp_domain_stream_pcm_pointer(&dice->domain, stream);
+}
+static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
+
+ return amdtp_domain_stream_pcm_pointer(&dice->domain, stream);
+}
+
+static int capture_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
+
+ return amdtp_domain_stream_pcm_ack(&dice->domain, stream);
+}
+
+static int playback_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
+
+ return amdtp_domain_stream_pcm_ack(&dice->domain, stream);
+}
+
+int snd_dice_create_pcm(struct snd_dice *dice)
+{
+ 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 = capture_prepare,
+ .trigger = capture_trigger,
+ .pointer = capture_pointer,
+ .ack = 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 = playback_prepare,
+ .trigger = playback_trigger,
+ .pointer = playback_pointer,
+ .ack = playback_ack,
+ };
+ struct snd_pcm *pcm;
+ unsigned int capture, playback;
+ int i, j;
+ int err;
+
+ for (i = 0; i < MAX_STREAMS; i++) {
+ capture = playback = 0;
+ for (j = 0; j < SND_DICE_RATE_MODE_COUNT; ++j) {
+ if (dice->tx_pcm_chs[i][j] > 0)
+ capture = 1;
+ if (dice->rx_pcm_chs[i][j] > 0)
+ playback = 1;
+ }
+
+ err = snd_pcm_new(dice->card, "DICE", i, 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);
+
+ snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC,
+ NULL, 0, 0);
+ }
+
+ return 0;
+}