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-rw-r--r--sound/firewire/fireface/Makefile2
-rw-r--r--sound/firewire/fireface/ff-pcm.c395
-rw-r--r--sound/firewire/fireface/ff.c4
-rw-r--r--sound/firewire/fireface/ff.h4
4 files changed, 404 insertions, 1 deletions
diff --git a/sound/firewire/fireface/Makefile b/sound/firewire/fireface/Makefile
index b772fdc20101..e62693811519 100644
--- a/sound/firewire/fireface/Makefile
+++ b/sound/firewire/fireface/Makefile
@@ -1,3 +1,3 @@
snd-fireface-objs := ff.o ff-transaction.o ff-midi.o ff-proc.o amdtp-ff.o \
- ff-stream.o
+ ff-stream.o ff-pcm.o
obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o
diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c
new file mode 100644
index 000000000000..d282467d39a6
--- /dev/null
+++ b/sound/firewire/fireface/ff-pcm.c
@@ -0,0 +1,395 @@
+/*
+ * ff-pcm.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "ff.h"
+
+static inline unsigned int get_multiplier_mode_with_index(unsigned int index)
+{
+ return ((int)index - 1) / 2;
+}
+
+static int hw_rule_rate(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ const 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(amdtp_rate_table); i++) {
+ mode = get_multiplier_mode_with_index(i);
+ if (!snd_interval_test(c, pcm_channels[mode]))
+ continue;
+
+ t.min = min(t.min, amdtp_rate_table[i]);
+ t.max = max(t.max, amdtp_rate_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)
+{
+ const 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(amdtp_rate_table); i++) {
+ mode = get_multiplier_mode_with_index(i);
+ if (!snd_interval_test(r, amdtp_rate_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_and_rates(struct snd_pcm_hardware *hw,
+ const unsigned int *pcm_channels)
+{
+ unsigned int mode;
+ unsigned int rate, channels;
+ int i;
+
+ hw->channels_min = UINT_MAX;
+ hw->channels_max = 0;
+ hw->rate_min = UINT_MAX;
+ hw->rate_max = 0;
+
+ for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
+ mode = get_multiplier_mode_with_index(i);
+
+ channels = pcm_channels[mode];
+ if (pcm_channels[mode] == 0)
+ continue;
+ hw->channels_min = min(hw->channels_min, channels);
+ hw->channels_max = max(hw->channels_max, channels);
+
+ rate = amdtp_rate_table[i];
+ hw->rates |= snd_pcm_rate_to_rate_bit(rate);
+ hw->rate_min = min(hw->rate_min, rate);
+ hw->rate_max = max(hw->rate_max, 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 pcm_init_hw_params(struct snd_ff *ff,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct amdtp_stream *s;
+ const unsigned int *pcm_channels;
+ 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 = SNDRV_PCM_FMTBIT_S32;
+ s = &ff->tx_stream;
+ pcm_channels = ff->spec->pcm_capture_channels;
+ } else {
+ runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
+ s = &ff->rx_stream;
+ pcm_channels = ff->spec->pcm_playback_channels;
+ }
+
+ /* limit rates */
+ limit_channels_and_rates(&runtime->hw, pcm_channels);
+ limit_period_and_buffer(&runtime->hw);
+
+ err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ hw_rule_channels, (void *)pcm_channels,
+ SNDRV_PCM_HW_PARAM_RATE, -1);
+ if (err < 0)
+ return err;
+
+ err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ hw_rule_rate, (void *)pcm_channels,
+ SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+ if (err < 0)
+ return err;
+
+ return amdtp_ff_add_pcm_hw_constraints(s, runtime);
+}
+
+static int pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_ff *ff = substream->private_data;
+ unsigned int rate;
+ enum snd_ff_clock_src src;
+ int i, err;
+
+ err = pcm_init_hw_params(ff, substream);
+ if (err < 0)
+ return err;
+
+ err = ff->spec->protocol->get_clock(ff, &rate, &src);
+ if (err < 0)
+ return err;
+
+ if (src != SND_FF_CLOCK_SRC_INTERNAL) {
+ for (i = 0; i < CIP_SFC_COUNT; ++i) {
+ if (amdtp_rate_table[i] == rate)
+ break;
+ }
+ /*
+ * The unit is configured at sampling frequency which packet
+ * streaming engine can't support.
+ */
+ if (i >= CIP_SFC_COUNT)
+ return -EIO;
+
+ substream->runtime->hw.rate_min = rate;
+ substream->runtime->hw.rate_max = rate;
+ } else {
+ if (amdtp_stream_pcm_running(&ff->rx_stream) ||
+ amdtp_stream_pcm_running(&ff->tx_stream)) {
+ rate = amdtp_rate_table[ff->rx_stream.sfc];
+ substream->runtime->hw.rate_min = rate;
+ substream->runtime->hw.rate_max = rate;
+ }
+ }
+
+ snd_pcm_set_sync(substream);
+
+ return 0;
+}
+
+static int pcm_close(struct snd_pcm_substream *substream)
+{
+ return 0;
+}
+
+static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_ff *ff = 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(&ff->mutex);
+ ff->substreams_counter++;
+ mutex_unlock(&ff->mutex);
+ }
+
+ return 0;
+}
+
+static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_ff *ff = 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(&ff->mutex);
+ ff->substreams_counter++;
+ mutex_unlock(&ff->mutex);
+ }
+
+ return 0;
+}
+
+static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_ff *ff = substream->private_data;
+
+ mutex_lock(&ff->mutex);
+
+ if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
+ ff->substreams_counter--;
+
+ snd_ff_stream_stop_duplex(ff);
+
+ mutex_unlock(&ff->mutex);
+
+ return snd_pcm_lib_free_vmalloc_buffer(substream);
+}
+
+static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_ff *ff = substream->private_data;
+
+ mutex_lock(&ff->mutex);
+
+ if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
+ ff->substreams_counter--;
+
+ snd_ff_stream_stop_duplex(ff);
+
+ mutex_unlock(&ff->mutex);
+
+ return snd_pcm_lib_free_vmalloc_buffer(substream);
+}
+
+static int pcm_capture_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_ff *ff = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int err;
+
+ mutex_lock(&ff->mutex);
+
+ err = snd_ff_stream_start_duplex(ff, runtime->rate);
+ if (err >= 0)
+ amdtp_stream_pcm_prepare(&ff->tx_stream);
+
+ mutex_unlock(&ff->mutex);
+
+ return err;
+}
+
+static int pcm_playback_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_ff *ff = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int err;
+
+ mutex_lock(&ff->mutex);
+
+ err = snd_ff_stream_start_duplex(ff, runtime->rate);
+ if (err >= 0)
+ amdtp_stream_pcm_prepare(&ff->rx_stream);
+
+ mutex_unlock(&ff->mutex);
+
+ return err;
+}
+
+static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_ff *ff = substream->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ amdtp_stream_pcm_trigger(&ff->tx_stream, substream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ amdtp_stream_pcm_trigger(&ff->tx_stream, NULL);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_ff *ff = substream->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ amdtp_stream_pcm_trigger(&ff->rx_stream, substream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ amdtp_stream_pcm_trigger(&ff->rx_stream, NULL);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
+{
+ struct snd_ff *ff = sbstrm->private_data;
+
+ return amdtp_stream_pcm_pointer(&ff->tx_stream);
+}
+
+static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
+{
+ struct snd_ff *ff = sbstrm->private_data;
+
+ return amdtp_stream_pcm_pointer(&ff->rx_stream);
+}
+
+static struct snd_pcm_ops pcm_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,
+};
+
+static struct snd_pcm_ops pcm_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,
+};
+
+int snd_ff_create_pcm_devices(struct snd_ff *ff)
+{
+ struct snd_pcm *pcm;
+ int err;
+
+ err = snd_pcm_new(ff->card, ff->card->driver, 0, 1, 1, &pcm);
+ if (err < 0)
+ return err;
+
+ pcm->private_data = ff;
+ snprintf(pcm->name, sizeof(pcm->name),
+ "%s PCM", ff->card->shortname);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops);
+
+ return 0;
+}
diff --git a/sound/firewire/fireface/ff.c b/sound/firewire/fireface/ff.c
index 6bdbebd9f61b..ff62d16fec0f 100644
--- a/sound/firewire/fireface/ff.c
+++ b/sound/firewire/fireface/ff.c
@@ -72,6 +72,10 @@ static void do_registration(struct work_struct *work)
if (err < 0)
goto error;
+ err = snd_ff_create_pcm_devices(ff);
+ if (err < 0)
+ goto error;
+
err = snd_card_register(ff->card);
if (err < 0)
goto error;
diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h
index 6599c11744ae..0d5228c905ea 100644
--- a/sound/firewire/fireface/ff.h
+++ b/sound/firewire/fireface/ff.h
@@ -21,6 +21,8 @@
#include <sound/core.h>
#include <sound/info.h>
#include <sound/rawmidi.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
#include "../lib.h"
#include "../amdtp-stream.h"
@@ -124,4 +126,6 @@ void snd_ff_proc_init(struct snd_ff *ff);
int snd_ff_create_midi_devices(struct snd_ff *ff);
+int snd_ff_create_pcm_devices(struct snd_ff *ff);
+
#endif
generated by cgit (git 2.34.1) at 2024-05-04 23:23:11 +0000