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-rw-r--r--sound/firewire/fireface/Makefile5
-rw-r--r--sound/firewire/fireface/amdtp-ff.c173
-rw-r--r--sound/firewire/fireface/ff-hwdep.c188
-rw-r--r--sound/firewire/fireface/ff-midi.c128
-rw-r--r--sound/firewire/fireface/ff-pcm.c400
-rw-r--r--sound/firewire/fireface/ff-proc.c62
-rw-r--r--sound/firewire/fireface/ff-protocol-former.c603
-rw-r--r--sound/firewire/fireface/ff-protocol-latter.c540
-rw-r--r--sound/firewire/fireface/ff-stream.c285
-rw-r--r--sound/firewire/fireface/ff-transaction.c232
-rw-r--r--sound/firewire/fireface/ff.c256
-rw-r--r--sound/firewire/fireface/ff.h166
12 files changed, 3038 insertions, 0 deletions
diff --git a/sound/firewire/fireface/Makefile b/sound/firewire/fireface/Makefile
new file mode 100644
index 000000000..3aef221ce
--- /dev/null
+++ b/sound/firewire/fireface/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+snd-fireface-objs := ff.o ff-transaction.o ff-midi.o ff-proc.o amdtp-ff.o \
+ ff-stream.o ff-pcm.o ff-hwdep.o ff-protocol-former.o \
+ ff-protocol-latter.o
+obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o
diff --git a/sound/firewire/fireface/amdtp-ff.c b/sound/firewire/fireface/amdtp-ff.c
new file mode 100644
index 000000000..98177b066
--- /dev/null
+++ b/sound/firewire/fireface/amdtp-ff.c
@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * amdtp-ff.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ */
+
+#include <sound/pcm.h>
+#include "ff.h"
+
+struct amdtp_ff {
+ unsigned int pcm_channels;
+};
+
+int amdtp_ff_set_parameters(struct amdtp_stream *s, unsigned int rate,
+ unsigned int pcm_channels)
+{
+ struct amdtp_ff *p = s->protocol;
+ unsigned int data_channels;
+
+ if (amdtp_stream_running(s))
+ return -EBUSY;
+
+ p->pcm_channels = pcm_channels;
+ data_channels = pcm_channels;
+
+ return amdtp_stream_set_parameters(s, rate, data_channels);
+}
+
+static void write_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
+ __le32 *buffer, unsigned int frames,
+ unsigned int pcm_frames)
+{
+ struct amdtp_ff *p = s->protocol;
+ unsigned int channels = p->pcm_channels;
+ struct snd_pcm_runtime *runtime = pcm->runtime;
+ unsigned int pcm_buffer_pointer;
+ int remaining_frames;
+ const u32 *src;
+ int i, c;
+
+ pcm_buffer_pointer = s->pcm_buffer_pointer + pcm_frames;
+ pcm_buffer_pointer %= runtime->buffer_size;
+
+ src = (void *)runtime->dma_area +
+ frames_to_bytes(runtime, pcm_buffer_pointer);
+ remaining_frames = runtime->buffer_size - pcm_buffer_pointer;
+
+ for (i = 0; i < frames; ++i) {
+ for (c = 0; c < channels; ++c) {
+ buffer[c] = cpu_to_le32(*src);
+ src++;
+ }
+ buffer += s->data_block_quadlets;
+ if (--remaining_frames == 0)
+ src = (void *)runtime->dma_area;
+ }
+}
+
+static void read_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
+ __le32 *buffer, unsigned int frames,
+ unsigned int pcm_frames)
+{
+ struct amdtp_ff *p = s->protocol;
+ unsigned int channels = p->pcm_channels;
+ struct snd_pcm_runtime *runtime = pcm->runtime;
+ unsigned int pcm_buffer_pointer;
+ int remaining_frames;
+ u32 *dst;
+ int i, c;
+
+ pcm_buffer_pointer = s->pcm_buffer_pointer + pcm_frames;
+ pcm_buffer_pointer %= runtime->buffer_size;
+
+ dst = (void *)runtime->dma_area +
+ frames_to_bytes(runtime, pcm_buffer_pointer);
+ remaining_frames = runtime->buffer_size - pcm_buffer_pointer;
+
+ for (i = 0; i < frames; ++i) {
+ for (c = 0; c < channels; ++c) {
+ *dst = le32_to_cpu(buffer[c]) & 0xffffff00;
+ dst++;
+ }
+ buffer += s->data_block_quadlets;
+ if (--remaining_frames == 0)
+ dst = (void *)runtime->dma_area;
+ }
+}
+
+static void write_pcm_silence(struct amdtp_stream *s,
+ __le32 *buffer, unsigned int frames)
+{
+ struct amdtp_ff *p = s->protocol;
+ unsigned int i, c, channels = p->pcm_channels;
+
+ for (i = 0; i < frames; ++i) {
+ for (c = 0; c < channels; ++c)
+ buffer[c] = cpu_to_le32(0x00000000);
+ buffer += s->data_block_quadlets;
+ }
+}
+
+int amdtp_ff_add_pcm_hw_constraints(struct amdtp_stream *s,
+ struct snd_pcm_runtime *runtime)
+{
+ int err;
+
+ err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
+ if (err < 0)
+ return err;
+
+ return amdtp_stream_add_pcm_hw_constraints(s, runtime);
+}
+
+static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
+ const struct pkt_desc *descs,
+ unsigned int packets,
+ struct snd_pcm_substream *pcm)
+{
+ unsigned int pcm_frames = 0;
+ int i;
+
+ for (i = 0; i < packets; ++i) {
+ const struct pkt_desc *desc = descs + i;
+ __le32 *buf = (__le32 *)desc->ctx_payload;
+ unsigned int data_blocks = desc->data_blocks;
+
+ if (pcm) {
+ write_pcm_s32(s, pcm, buf, data_blocks, pcm_frames);
+ pcm_frames += data_blocks;
+ } else {
+ write_pcm_silence(s, buf, data_blocks);
+ }
+ }
+
+ return pcm_frames;
+}
+
+static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
+ const struct pkt_desc *descs,
+ unsigned int packets,
+ struct snd_pcm_substream *pcm)
+{
+ unsigned int pcm_frames = 0;
+ int i;
+
+ for (i = 0; i < packets; ++i) {
+ const struct pkt_desc *desc = descs + i;
+ __le32 *buf = (__le32 *)desc->ctx_payload;
+ unsigned int data_blocks = desc->data_blocks;
+
+ if (pcm) {
+ read_pcm_s32(s, pcm, buf, data_blocks, pcm_frames);
+ pcm_frames += data_blocks;
+ }
+ }
+
+ return pcm_frames;
+}
+
+int amdtp_ff_init(struct amdtp_stream *s, struct fw_unit *unit,
+ enum amdtp_stream_direction dir)
+{
+ amdtp_stream_process_ctx_payloads_t process_ctx_payloads;
+
+ if (dir == AMDTP_IN_STREAM)
+ process_ctx_payloads = process_ir_ctx_payloads;
+ else
+ process_ctx_payloads = process_it_ctx_payloads;
+
+ return amdtp_stream_init(s, unit, dir, CIP_BLOCKING | CIP_UNAWARE_SYT | CIP_NO_HEADER, 0,
+ process_ctx_payloads, sizeof(struct amdtp_ff));
+}
diff --git a/sound/firewire/fireface/ff-hwdep.c b/sound/firewire/fireface/ff-hwdep.c
new file mode 100644
index 000000000..ea64a2a41
--- /dev/null
+++ b/sound/firewire/fireface/ff-hwdep.c
@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ff-hwdep.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ */
+
+/*
+ * This codes give three functionality.
+ *
+ * 1.get firewire node information
+ * 2.get notification about starting/stopping stream
+ * 3.lock/unlock stream
+ */
+
+#include "ff.h"
+
+static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
+ loff_t *offset)
+{
+ struct snd_ff *ff = hwdep->private_data;
+ DEFINE_WAIT(wait);
+ union snd_firewire_event event;
+
+ spin_lock_irq(&ff->lock);
+
+ while (!ff->dev_lock_changed) {
+ prepare_to_wait(&ff->hwdep_wait, &wait, TASK_INTERRUPTIBLE);
+ spin_unlock_irq(&ff->lock);
+ schedule();
+ finish_wait(&ff->hwdep_wait, &wait);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ spin_lock_irq(&ff->lock);
+ }
+
+ memset(&event, 0, sizeof(event));
+ event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS;
+ event.lock_status.status = (ff->dev_lock_count > 0);
+ ff->dev_lock_changed = false;
+
+ count = min_t(long, count, sizeof(event.lock_status));
+
+ spin_unlock_irq(&ff->lock);
+
+ if (copy_to_user(buf, &event, count))
+ return -EFAULT;
+
+ return count;
+}
+
+static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
+ poll_table *wait)
+{
+ struct snd_ff *ff = hwdep->private_data;
+ __poll_t events;
+
+ poll_wait(file, &ff->hwdep_wait, wait);
+
+ spin_lock_irq(&ff->lock);
+ if (ff->dev_lock_changed)
+ events = EPOLLIN | EPOLLRDNORM;
+ else
+ events = 0;
+ spin_unlock_irq(&ff->lock);
+
+ return events;
+}
+
+static int hwdep_get_info(struct snd_ff *ff, void __user *arg)
+{
+ struct fw_device *dev = fw_parent_device(ff->unit);
+ struct snd_firewire_get_info info;
+
+ memset(&info, 0, sizeof(info));
+ info.type = SNDRV_FIREWIRE_TYPE_FIREFACE;
+ info.card = dev->card->index;
+ *(__be32 *)&info.guid[0] = cpu_to_be32(dev->config_rom[3]);
+ *(__be32 *)&info.guid[4] = cpu_to_be32(dev->config_rom[4]);
+ strscpy(info.device_name, dev_name(&dev->device),
+ sizeof(info.device_name));
+
+ if (copy_to_user(arg, &info, sizeof(info)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int hwdep_lock(struct snd_ff *ff)
+{
+ int err;
+
+ spin_lock_irq(&ff->lock);
+
+ if (ff->dev_lock_count == 0) {
+ ff->dev_lock_count = -1;
+ err = 0;
+ } else {
+ err = -EBUSY;
+ }
+
+ spin_unlock_irq(&ff->lock);
+
+ return err;
+}
+
+static int hwdep_unlock(struct snd_ff *ff)
+{
+ int err;
+
+ spin_lock_irq(&ff->lock);
+
+ if (ff->dev_lock_count == -1) {
+ ff->dev_lock_count = 0;
+ err = 0;
+ } else {
+ err = -EBADFD;
+ }
+
+ spin_unlock_irq(&ff->lock);
+
+ return err;
+}
+
+static int hwdep_release(struct snd_hwdep *hwdep, struct file *file)
+{
+ struct snd_ff *ff = hwdep->private_data;
+
+ spin_lock_irq(&ff->lock);
+ if (ff->dev_lock_count == -1)
+ ff->dev_lock_count = 0;
+ spin_unlock_irq(&ff->lock);
+
+ return 0;
+}
+
+static int hwdep_ioctl(struct snd_hwdep *hwdep, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct snd_ff *ff = hwdep->private_data;
+
+ switch (cmd) {
+ case SNDRV_FIREWIRE_IOCTL_GET_INFO:
+ return hwdep_get_info(ff, (void __user *)arg);
+ case SNDRV_FIREWIRE_IOCTL_LOCK:
+ return hwdep_lock(ff);
+ case SNDRV_FIREWIRE_IOCTL_UNLOCK:
+ return hwdep_unlock(ff);
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+#ifdef CONFIG_COMPAT
+static int hwdep_compat_ioctl(struct snd_hwdep *hwdep, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ return hwdep_ioctl(hwdep, file, cmd,
+ (unsigned long)compat_ptr(arg));
+}
+#else
+#define hwdep_compat_ioctl NULL
+#endif
+
+int snd_ff_create_hwdep_devices(struct snd_ff *ff)
+{
+ static const struct snd_hwdep_ops hwdep_ops = {
+ .read = hwdep_read,
+ .release = hwdep_release,
+ .poll = hwdep_poll,
+ .ioctl = hwdep_ioctl,
+ .ioctl_compat = hwdep_compat_ioctl,
+ };
+ struct snd_hwdep *hwdep;
+ int err;
+
+ err = snd_hwdep_new(ff->card, ff->card->driver, 0, &hwdep);
+ if (err < 0)
+ return err;
+
+ strcpy(hwdep->name, ff->card->driver);
+ hwdep->iface = SNDRV_HWDEP_IFACE_FW_FIREFACE;
+ hwdep->ops = hwdep_ops;
+ hwdep->private_data = ff;
+ hwdep->exclusive = true;
+
+ return 0;
+}
diff --git a/sound/firewire/fireface/ff-midi.c b/sound/firewire/fireface/ff-midi.c
new file mode 100644
index 000000000..25821d186
--- /dev/null
+++ b/sound/firewire/fireface/ff-midi.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ff-midi.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ */
+
+#include "ff.h"
+
+static int midi_capture_open(struct snd_rawmidi_substream *substream)
+{
+ /* Do nothing. */
+ return 0;
+}
+
+static int midi_playback_open(struct snd_rawmidi_substream *substream)
+{
+ struct snd_ff *ff = substream->rmidi->private_data;
+
+ /* Initialize internal status. */
+ ff->on_sysex[substream->number] = 0;
+ ff->rx_midi_error[substream->number] = false;
+
+ WRITE_ONCE(ff->rx_midi_substreams[substream->number], substream);
+
+ return 0;
+}
+
+static int midi_capture_close(struct snd_rawmidi_substream *substream)
+{
+ /* Do nothing. */
+ return 0;
+}
+
+static int midi_playback_close(struct snd_rawmidi_substream *substream)
+{
+ struct snd_ff *ff = substream->rmidi->private_data;
+
+ cancel_work_sync(&ff->rx_midi_work[substream->number]);
+ WRITE_ONCE(ff->rx_midi_substreams[substream->number], NULL);
+
+ return 0;
+}
+
+static void midi_capture_trigger(struct snd_rawmidi_substream *substream,
+ int up)
+{
+ struct snd_ff *ff = substream->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ff->lock, flags);
+
+ if (up)
+ WRITE_ONCE(ff->tx_midi_substreams[substream->number],
+ substream);
+ else
+ WRITE_ONCE(ff->tx_midi_substreams[substream->number], NULL);
+
+ spin_unlock_irqrestore(&ff->lock, flags);
+}
+
+static void midi_playback_trigger(struct snd_rawmidi_substream *substream,
+ int up)
+{
+ struct snd_ff *ff = substream->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ff->lock, flags);
+
+ if (up || !ff->rx_midi_error[substream->number])
+ schedule_work(&ff->rx_midi_work[substream->number]);
+
+ spin_unlock_irqrestore(&ff->lock, flags);
+}
+
+static void set_midi_substream_names(struct snd_rawmidi_str *stream,
+ const char *const name)
+{
+ struct snd_rawmidi_substream *substream;
+
+ list_for_each_entry(substream, &stream->substreams, list) {
+ snprintf(substream->name, sizeof(substream->name),
+ "%s MIDI %d", name, substream->number + 1);
+ }
+}
+
+int snd_ff_create_midi_devices(struct snd_ff *ff)
+{
+ static const struct snd_rawmidi_ops midi_capture_ops = {
+ .open = midi_capture_open,
+ .close = midi_capture_close,
+ .trigger = midi_capture_trigger,
+ };
+ static const struct snd_rawmidi_ops midi_playback_ops = {
+ .open = midi_playback_open,
+ .close = midi_playback_close,
+ .trigger = midi_playback_trigger,
+ };
+ struct snd_rawmidi *rmidi;
+ struct snd_rawmidi_str *stream;
+ int err;
+
+ err = snd_rawmidi_new(ff->card, ff->card->driver, 0,
+ ff->spec->midi_out_ports, ff->spec->midi_in_ports,
+ &rmidi);
+ if (err < 0)
+ return err;
+
+ snprintf(rmidi->name, sizeof(rmidi->name),
+ "%s MIDI", ff->card->shortname);
+ rmidi->private_data = ff;
+
+ rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
+ snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
+ &midi_capture_ops);
+ stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
+ set_midi_substream_names(stream, ff->card->shortname);
+
+ rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
+ snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
+ &midi_playback_ops);
+ stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
+ set_midi_substream_names(stream, ff->card->shortname);
+
+ rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
+
+ return 0;
+}
diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c
new file mode 100644
index 000000000..ec915671a
--- /dev/null
+++ b/sound/firewire/fireface/ff-pcm.c
@@ -0,0 +1,400 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ff-pcm.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ */
+
+#include "ff.h"
+
+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;
+
+ for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
+ enum snd_ff_stream_mode mode;
+ int err;
+
+ err = snd_ff_stream_get_multiplier_mode(i, &mode);
+ if (err < 0)
+ continue;
+
+ 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;
+
+ for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) {
+ enum snd_ff_stream_mode mode;
+ int err;
+
+ err = snd_ff_stream_get_multiplier_mode(i, &mode);
+ if (err < 0)
+ continue;
+
+ 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 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++) {
+ enum snd_ff_stream_mode mode;
+ int err;
+
+ err = snd_ff_stream_get_multiplier_mode(i, &mode);
+ if (err < 0)
+ continue;
+
+ 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 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;
+
+ 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_channels_and_rates(&runtime->hw, pcm_channels);
+
+ 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;
+ struct amdtp_domain *d = &ff->domain;
+ unsigned int rate;
+ enum snd_ff_clock_src src;
+ int i, err;
+
+ err = snd_ff_stream_lock_try(ff);
+ if (err < 0)
+ return err;
+
+ err = pcm_init_hw_params(ff, substream);
+ if (err < 0)
+ goto release_lock;
+
+ err = ff->spec->protocol->get_clock(ff, &rate, &src);
+ if (err < 0)
+ goto release_lock;
+
+ mutex_lock(&ff->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 (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) {
+ mutex_unlock(&ff->mutex);
+ err = -EIO;
+ goto release_lock;
+ }
+
+ substream->runtime->hw.rate_min = rate;
+ substream->runtime->hw.rate_max = rate;
+ } else {
+ if (ff->substreams_counter > 0) {
+ unsigned int frames_per_period = d->events_per_period;
+ unsigned int frames_per_buffer = d->events_per_buffer;
+
+ rate = amdtp_rate_table[ff->rx_stream.sfc];
+ substream->runtime->hw.rate_min = rate;
+ substream->runtime->hw.rate_max = rate;
+
+ 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(&ff->mutex);
+ goto release_lock;
+ }
+
+ 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(&ff->mutex);
+ goto release_lock;
+ }
+ }
+ }
+
+ mutex_unlock(&ff->mutex);
+
+ snd_pcm_set_sync(substream);
+
+ return 0;
+
+release_lock:
+ snd_ff_stream_lock_release(ff);
+ return err;
+}
+
+static int pcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_ff *ff = substream->private_data;
+
+ snd_ff_stream_lock_release(ff);
+
+ return 0;
+}
+
+static int pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_ff *ff = substream->private_data;
+ int err = 0;
+
+ if (substream->runtime->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(&ff->mutex);
+ err = snd_ff_stream_reserve_duplex(ff, rate, frames_per_period,
+ frames_per_buffer);
+ if (err >= 0)
+ ++ff->substreams_counter;
+ mutex_unlock(&ff->mutex);
+ }
+
+ return err;
+}
+
+static int pcm_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_ff *ff = substream->private_data;
+
+ mutex_lock(&ff->mutex);
+
+ if (substream->runtime->state != SNDRV_PCM_STATE_OPEN)
+ --ff->substreams_counter;
+
+ snd_ff_stream_stop_duplex(ff);
+
+ mutex_unlock(&ff->mutex);
+
+ return 0;
+}
+
+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_domain_stream_pcm_pointer(&ff->domain, &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_domain_stream_pcm_pointer(&ff->domain, &ff->rx_stream);
+}
+
+static int pcm_capture_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_ff *ff = substream->private_data;
+
+ return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->tx_stream);
+}
+
+static int pcm_playback_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_ff *ff = substream->private_data;
+
+ return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->rx_stream);
+}
+
+int snd_ff_create_pcm_devices(struct snd_ff *ff)
+{
+ static const struct snd_pcm_ops pcm_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 pcm_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(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);
+ snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
+
+ return 0;
+}
diff --git a/sound/firewire/fireface/ff-proc.c b/sound/firewire/fireface/ff-proc.c
new file mode 100644
index 000000000..4aecc8dcb
--- /dev/null
+++ b/sound/firewire/fireface/ff-proc.c
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ff-proc.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ */
+
+#include "./ff.h"
+
+const char *snd_ff_proc_get_clk_label(enum snd_ff_clock_src src)
+{
+ static const char *const labels[] = {
+ "Internal",
+ "S/PDIF",
+ "ADAT1",
+ "ADAT2",
+ "Word",
+ "LTC",
+ };
+
+ if (src >= ARRAY_SIZE(labels))
+ return NULL;
+
+ return labels[src];
+}
+
+static void proc_dump_status(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct snd_ff *ff = entry->private_data;
+
+ ff->spec->protocol->dump_status(ff, buffer);
+}
+
+static void add_node(struct snd_ff *ff, struct snd_info_entry *root,
+ const char *name,
+ void (*op)(struct snd_info_entry *e,
+ struct snd_info_buffer *b))
+{
+ struct snd_info_entry *entry;
+
+ entry = snd_info_create_card_entry(ff->card, name, root);
+ if (entry)
+ snd_info_set_text_ops(entry, ff, op);
+}
+
+void snd_ff_proc_init(struct snd_ff *ff)
+{
+ struct snd_info_entry *root;
+
+ /*
+ * All nodes are automatically removed at snd_card_disconnect(),
+ * by following to link list.
+ */
+ root = snd_info_create_card_entry(ff->card, "firewire",
+ ff->card->proc_root);
+ if (root == NULL)
+ return;
+ root->mode = S_IFDIR | 0555;
+
+ add_node(ff, root, "status", proc_dump_status);
+}
diff --git a/sound/firewire/fireface/ff-protocol-former.c b/sound/firewire/fireface/ff-protocol-former.c
new file mode 100644
index 000000000..8900ffe51
--- /dev/null
+++ b/sound/firewire/fireface/ff-protocol-former.c
@@ -0,0 +1,603 @@
+// SPDX-License-Identifier: GPL-2.0
+// ff-protocol-former.c - a part of driver for RME Fireface series
+//
+// Copyright (c) 2019 Takashi Sakamoto
+
+#include <linux/delay.h>
+
+#include "ff.h"
+
+#define FORMER_REG_SYNC_STATUS 0x0000801c0000ull
+/* For block write request. */
+#define FORMER_REG_FETCH_PCM_FRAMES 0x0000801c0000ull
+#define FORMER_REG_CLOCK_CONFIG 0x0000801c0004ull
+
+static int parse_clock_bits(u32 data, unsigned int *rate,
+ enum snd_ff_clock_src *src)
+{
+ static const struct {
+ unsigned int rate;
+ u32 mask;
+ } *rate_entry, rate_entries[] = {
+ { 32000, 0x00000002, },
+ { 44100, 0x00000000, },
+ { 48000, 0x00000006, },
+ { 64000, 0x0000000a, },
+ { 88200, 0x00000008, },
+ { 96000, 0x0000000e, },
+ { 128000, 0x00000012, },
+ { 176400, 0x00000010, },
+ { 192000, 0x00000016, },
+ };
+ static const struct {
+ enum snd_ff_clock_src src;
+ u32 mask;
+ } *clk_entry, clk_entries[] = {
+ { SND_FF_CLOCK_SRC_ADAT1, 0x00000000, },
+ { SND_FF_CLOCK_SRC_ADAT2, 0x00000400, },
+ { SND_FF_CLOCK_SRC_SPDIF, 0x00000c00, },
+ { SND_FF_CLOCK_SRC_WORD, 0x00001000, },
+ { SND_FF_CLOCK_SRC_LTC, 0x00001800, },
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(rate_entries); ++i) {
+ rate_entry = rate_entries + i;
+ if ((data & 0x0000001e) == rate_entry->mask) {
+ *rate = rate_entry->rate;
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(rate_entries))
+ return -EIO;
+
+ if (data & 0x00000001) {
+ *src = SND_FF_CLOCK_SRC_INTERNAL;
+ } else {
+ for (i = 0; i < ARRAY_SIZE(clk_entries); ++i) {
+ clk_entry = clk_entries + i;
+ if ((data & 0x00001c00) == clk_entry->mask) {
+ *src = clk_entry->src;
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(clk_entries))
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int former_get_clock(struct snd_ff *ff, unsigned int *rate,
+ enum snd_ff_clock_src *src)
+{
+ __le32 reg;
+ u32 data;
+ int err;
+
+ err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
+ FORMER_REG_CLOCK_CONFIG, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+ data = le32_to_cpu(reg);
+
+ return parse_clock_bits(data, rate, src);
+}
+
+static int former_switch_fetching_mode(struct snd_ff *ff, bool enable)
+{
+ unsigned int count;
+ __le32 *reg;
+ int i;
+ int err;
+
+ count = 0;
+ for (i = 0; i < SND_FF_STREAM_MODE_COUNT; ++i)
+ count = max(count, ff->spec->pcm_playback_channels[i]);
+
+ reg = kcalloc(count, sizeof(__le32), GFP_KERNEL);
+ if (!reg)
+ return -ENOMEM;
+
+ if (!enable) {
+ /*
+ * Each quadlet is corresponding to data channels in a data
+ * blocks in reverse order. Precisely, quadlets for available
+ * data channels should be enabled. Here, I take second best
+ * to fetch PCM frames from all of data channels regardless of
+ * stf.
+ */
+ for (i = 0; i < count; ++i)
+ reg[i] = cpu_to_le32(0x00000001);
+ }
+
+ err = snd_fw_transaction(ff->unit, TCODE_WRITE_BLOCK_REQUEST,
+ FORMER_REG_FETCH_PCM_FRAMES, reg,
+ sizeof(__le32) * count, 0);
+ kfree(reg);
+ return err;
+}
+
+static void dump_clock_config(struct snd_ff *ff, struct snd_info_buffer *buffer)
+{
+ __le32 reg;
+ u32 data;
+ unsigned int rate;
+ enum snd_ff_clock_src src;
+ const char *label;
+ int err;
+
+ err = snd_fw_transaction(ff->unit, TCODE_READ_BLOCK_REQUEST,
+ FORMER_REG_CLOCK_CONFIG, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return;
+ data = le32_to_cpu(reg);
+
+ snd_iprintf(buffer, "Output S/PDIF format: %s (Emphasis: %s)\n",
+ (data & 0x00000020) ? "Professional" : "Consumer",
+ (data & 0x00000040) ? "on" : "off");
+
+ snd_iprintf(buffer, "Optical output interface format: %s\n",
+ (data & 0x00000100) ? "S/PDIF" : "ADAT");
+
+ snd_iprintf(buffer, "Word output single speed: %s\n",
+ (data & 0x00002000) ? "on" : "off");
+
+ snd_iprintf(buffer, "S/PDIF input interface: %s\n",
+ (data & 0x00000200) ? "Optical" : "Coaxial");
+
+ err = parse_clock_bits(data, &rate, &src);
+ if (err < 0)
+ return;
+ label = snd_ff_proc_get_clk_label(src);
+ if (!label)
+ return;
+
+ snd_iprintf(buffer, "Clock configuration: %d %s\n", rate, label);
+}
+
+static void dump_sync_status(struct snd_ff *ff, struct snd_info_buffer *buffer)
+{
+ static const struct {
+ char *const label;
+ u32 locked_mask;
+ u32 synced_mask;
+ } *clk_entry, clk_entries[] = {
+ { "WDClk", 0x40000000, 0x20000000, },
+ { "S/PDIF", 0x00080000, 0x00040000, },
+ { "ADAT1", 0x00000400, 0x00001000, },
+ { "ADAT2", 0x00000800, 0x00002000, },
+ };
+ static const struct {
+ char *const label;
+ u32 mask;
+ } *referred_entry, referred_entries[] = {
+ { "ADAT1", 0x00000000, },
+ { "ADAT2", 0x00400000, },
+ { "S/PDIF", 0x00c00000, },
+ { "WDclk", 0x01000000, },
+ { "TCO", 0x01400000, },
+ };
+ static const struct {
+ unsigned int rate;
+ u32 mask;
+ } *rate_entry, rate_entries[] = {
+ { 32000, 0x02000000, },
+ { 44100, 0x04000000, },
+ { 48000, 0x06000000, },
+ { 64000, 0x08000000, },
+ { 88200, 0x0a000000, },
+ { 96000, 0x0c000000, },
+ { 128000, 0x0e000000, },
+ { 176400, 0x10000000, },
+ { 192000, 0x12000000, },
+ };
+ __le32 reg[2];
+ u32 data[2];
+ int i;
+ int err;
+
+ err = snd_fw_transaction(ff->unit, TCODE_READ_BLOCK_REQUEST,
+ FORMER_REG_SYNC_STATUS, reg, sizeof(reg), 0);
+ if (err < 0)
+ return;
+ data[0] = le32_to_cpu(reg[0]);
+ data[1] = le32_to_cpu(reg[1]);
+
+ snd_iprintf(buffer, "External source detection:\n");
+
+ for (i = 0; i < ARRAY_SIZE(clk_entries); ++i) {
+ const char *state;
+
+ clk_entry = clk_entries + i;
+ if (data[0] & clk_entry->locked_mask) {
+ if (data[0] & clk_entry->synced_mask)
+ state = "sync";
+ else
+ state = "lock";
+ } else {
+ state = "none";
+ }
+
+ snd_iprintf(buffer, "%s: %s\n", clk_entry->label, state);
+ }
+
+ snd_iprintf(buffer, "Referred clock:\n");
+
+ if (data[1] & 0x00000001) {
+ snd_iprintf(buffer, "Internal\n");
+ } else {
+ unsigned int rate;
+ const char *label;
+
+ for (i = 0; i < ARRAY_SIZE(referred_entries); ++i) {
+ referred_entry = referred_entries + i;
+ if ((data[0] & 0x1e0000) == referred_entry->mask) {
+ label = referred_entry->label;
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(referred_entries))
+ label = "none";
+
+ for (i = 0; i < ARRAY_SIZE(rate_entries); ++i) {
+ rate_entry = rate_entries + i;
+ if ((data[0] & 0x1e000000) == rate_entry->mask) {
+ rate = rate_entry->rate;
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(rate_entries))
+ rate = 0;
+
+ snd_iprintf(buffer, "%s %d\n", label, rate);
+ }
+}
+
+static void former_dump_status(struct snd_ff *ff,
+ struct snd_info_buffer *buffer)
+{
+ dump_clock_config(ff, buffer);
+ dump_sync_status(ff, buffer);
+}
+
+static int former_fill_midi_msg(struct snd_ff *ff,
+ struct snd_rawmidi_substream *substream,
+ unsigned int port)
+{
+ u8 *buf = (u8 *)ff->msg_buf[port];
+ int len;
+ int i;
+
+ len = snd_rawmidi_transmit_peek(substream, buf,
+ SND_FF_MAXIMIM_MIDI_QUADS);
+ if (len <= 0)
+ return len;
+
+ // One quadlet includes one byte.
+ for (i = len - 1; i >= 0; --i)
+ ff->msg_buf[port][i] = cpu_to_le32(buf[i]);
+ ff->rx_bytes[port] = len;
+
+ return len;
+}
+
+#define FF800_STF 0x0000fc88f000
+#define FF800_RX_PACKET_FORMAT 0x0000fc88f004
+#define FF800_ALLOC_TX_STREAM 0x0000fc88f008
+#define FF800_ISOC_COMM_START 0x0000fc88f00c
+#define FF800_TX_S800_FLAG 0x00000800
+#define FF800_ISOC_COMM_STOP 0x0000fc88f010
+
+#define FF800_TX_PACKET_ISOC_CH 0x0000801c0008
+
+static int allocate_tx_resources(struct snd_ff *ff)
+{
+ __le32 reg;
+ unsigned int count;
+ unsigned int tx_isoc_channel;
+ int err;
+
+ reg = cpu_to_le32(ff->tx_stream.data_block_quadlets);
+ err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF800_ALLOC_TX_STREAM, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+
+ // Wait till the format of tx packet is available.
+ count = 0;
+ while (count++ < 10) {
+ u32 data;
+ err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
+ FF800_TX_PACKET_ISOC_CH, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+
+ data = le32_to_cpu(reg);
+ if (data != 0xffffffff) {
+ tx_isoc_channel = data;
+ break;
+ }
+
+ msleep(50);
+ }
+ if (count >= 10)
+ return -ETIMEDOUT;
+
+ // NOTE: this is a makeshift to start OHCI 1394 IR context in the
+ // channel. On the other hand, 'struct fw_iso_resources.allocated' is
+ // not true and it's not deallocated at stop.
+ ff->tx_resources.channel = tx_isoc_channel;
+
+ return 0;
+}
+
+static int ff800_allocate_resources(struct snd_ff *ff, unsigned int rate)
+{
+ u32 data;
+ __le32 reg;
+ int err;
+
+ reg = cpu_to_le32(rate);
+ err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF800_STF, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+
+ // If starting isochronous communication immediately, change of STF has
+ // no effect. In this case, the communication runs based on former STF.
+ // Let's sleep for a bit.
+ msleep(100);
+
+ // Controllers should allocate isochronous resources for rx stream.
+ err = fw_iso_resources_allocate(&ff->rx_resources,
+ amdtp_stream_get_max_payload(&ff->rx_stream),
+ fw_parent_device(ff->unit)->max_speed);
+ if (err < 0)
+ return err;
+
+ // Set isochronous channel and the number of quadlets of rx packets.
+ // This should be done before the allocation of tx resources to avoid
+ // periodical noise.
+ data = ff->rx_stream.data_block_quadlets << 3;
+ data = (data << 8) | ff->rx_resources.channel;
+ reg = cpu_to_le32(data);
+ err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF800_RX_PACKET_FORMAT, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+
+ return allocate_tx_resources(ff);
+}
+
+static int ff800_begin_session(struct snd_ff *ff, unsigned int rate)
+{
+ unsigned int generation = ff->rx_resources.generation;
+ __le32 reg;
+
+ if (generation != fw_parent_device(ff->unit)->card->generation) {
+ int err = fw_iso_resources_update(&ff->rx_resources);
+ if (err < 0)
+ return err;
+ }
+
+ reg = cpu_to_le32(0x80000000);
+ reg |= cpu_to_le32(ff->tx_stream.data_block_quadlets);
+ if (fw_parent_device(ff->unit)->max_speed == SCODE_800)
+ reg |= cpu_to_le32(FF800_TX_S800_FLAG);
+ return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF800_ISOC_COMM_START, &reg, sizeof(reg), 0);
+}
+
+static void ff800_finish_session(struct snd_ff *ff)
+{
+ __le32 reg;
+
+ reg = cpu_to_le32(0x80000000);
+ snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF800_ISOC_COMM_STOP, &reg, sizeof(reg), 0);
+}
+
+// Fireface 800 doesn't allow drivers to register lower 4 bytes of destination
+// address.
+// A write transaction to clear registered higher 4 bytes of destination address
+// has an effect to suppress asynchronous transaction from device.
+static void ff800_handle_midi_msg(struct snd_ff *ff, unsigned int offset,
+ __le32 *buf, size_t length)
+{
+ int i;
+
+ for (i = 0; i < length / 4; i++) {
+ u8 byte = le32_to_cpu(buf[i]) & 0xff;
+ struct snd_rawmidi_substream *substream;
+
+ substream = READ_ONCE(ff->tx_midi_substreams[0]);
+ if (substream)
+ snd_rawmidi_receive(substream, &byte, 1);
+ }
+}
+
+const struct snd_ff_protocol snd_ff_protocol_ff800 = {
+ .handle_midi_msg = ff800_handle_midi_msg,
+ .fill_midi_msg = former_fill_midi_msg,
+ .get_clock = former_get_clock,
+ .switch_fetching_mode = former_switch_fetching_mode,
+ .allocate_resources = ff800_allocate_resources,
+ .begin_session = ff800_begin_session,
+ .finish_session = ff800_finish_session,
+ .dump_status = former_dump_status,
+};
+
+#define FF400_STF 0x000080100500ull
+#define FF400_RX_PACKET_FORMAT 0x000080100504ull
+#define FF400_ISOC_COMM_START 0x000080100508ull
+#define FF400_TX_PACKET_FORMAT 0x00008010050cull
+#define FF400_ISOC_COMM_STOP 0x000080100510ull
+
+// Fireface 400 manages isochronous channel number in 3 bit field. Therefore,
+// we can allocate between 0 and 7 channel.
+static int ff400_allocate_resources(struct snd_ff *ff, unsigned int rate)
+{
+ __le32 reg;
+ enum snd_ff_stream_mode mode;
+ int i;
+ int err;
+
+ // Check whether the given value is supported or not.
+ for (i = 0; i < CIP_SFC_COUNT; i++) {
+ if (amdtp_rate_table[i] == rate)
+ break;
+ }
+ if (i >= CIP_SFC_COUNT)
+ return -EINVAL;
+
+ // Set the number of data blocks transferred in a second.
+ reg = cpu_to_le32(rate);
+ err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF400_STF, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+
+ msleep(100);
+
+ err = snd_ff_stream_get_multiplier_mode(i, &mode);
+ if (err < 0)
+ return err;
+
+ // Keep resources for in-stream.
+ ff->tx_resources.channels_mask = 0x00000000000000ffuLL;
+ err = fw_iso_resources_allocate(&ff->tx_resources,
+ amdtp_stream_get_max_payload(&ff->tx_stream),
+ fw_parent_device(ff->unit)->max_speed);
+ if (err < 0)
+ return err;
+
+ // Keep resources for out-stream.
+ ff->rx_resources.channels_mask = 0x00000000000000ffuLL;
+ err = fw_iso_resources_allocate(&ff->rx_resources,
+ amdtp_stream_get_max_payload(&ff->rx_stream),
+ fw_parent_device(ff->unit)->max_speed);
+ if (err < 0)
+ fw_iso_resources_free(&ff->tx_resources);
+
+ return err;
+}
+
+static int ff400_begin_session(struct snd_ff *ff, unsigned int rate)
+{
+ unsigned int generation = ff->rx_resources.generation;
+ __le32 reg;
+ int err;
+
+ if (generation != fw_parent_device(ff->unit)->card->generation) {
+ err = fw_iso_resources_update(&ff->tx_resources);
+ if (err < 0)
+ return err;
+
+ err = fw_iso_resources_update(&ff->rx_resources);
+ if (err < 0)
+ return err;
+ }
+
+ // Set isochronous channel and the number of quadlets of received
+ // packets.
+ reg = cpu_to_le32(((ff->rx_stream.data_block_quadlets << 3) << 8) |
+ ff->rx_resources.channel);
+ err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF400_RX_PACKET_FORMAT, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+
+ // Set isochronous channel and the number of quadlets of transmitted
+ // packet.
+ // TODO: investigate the purpose of this 0x80.
+ reg = cpu_to_le32((0x80 << 24) |
+ (ff->tx_resources.channel << 5) |
+ (ff->tx_stream.data_block_quadlets));
+ err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF400_TX_PACKET_FORMAT, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+
+ // Allow to transmit packets.
+ reg = cpu_to_le32(0x00000001);
+ return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF400_ISOC_COMM_START, &reg, sizeof(reg), 0);
+}
+
+static void ff400_finish_session(struct snd_ff *ff)
+{
+ __le32 reg;
+
+ reg = cpu_to_le32(0x80000000);
+ snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ FF400_ISOC_COMM_STOP, &reg, sizeof(reg), 0);
+}
+
+// For Fireface 400, lower 4 bytes of destination address is configured by bit
+// flag in quadlet register (little endian) at 0x'0000'801'0051c. Drivers can
+// select one of 4 options:
+//
+// bit flags: offset of destination address
+// - 0x04000000: 0x'....'....'0000'0000
+// - 0x08000000: 0x'....'....'0000'0080
+// - 0x10000000: 0x'....'....'0000'0100
+// - 0x20000000: 0x'....'....'0000'0180
+//
+// Drivers can suppress the device to transfer asynchronous transactions by
+// using below 2 bits.
+// - 0x01000000: suppress transmission
+// - 0x02000000: suppress transmission
+//
+// Actually, the register is write-only and includes the other options such as
+// input attenuation. This driver allocates destination address with '0000'0000
+// in its lower offset and expects userspace application to configure the
+// register for it.
+static void ff400_handle_midi_msg(struct snd_ff *ff, unsigned int offset,
+ __le32 *buf, size_t length)
+{
+ int i;
+
+ for (i = 0; i < length / 4; i++) {
+ u32 quad = le32_to_cpu(buf[i]);
+ u8 byte;
+ unsigned int index;
+ struct snd_rawmidi_substream *substream;
+
+ /* Message in first port. */
+ /*
+ * This value may represent the index of this unit when the same
+ * units are on the same IEEE 1394 bus. This driver doesn't use
+ * it.
+ */
+ index = (quad >> 8) & 0xff;
+ if (index > 0) {
+ substream = READ_ONCE(ff->tx_midi_substreams[0]);
+ if (substream != NULL) {
+ byte = quad & 0xff;
+ snd_rawmidi_receive(substream, &byte, 1);
+ }
+ }
+
+ /* Message in second port. */
+ index = (quad >> 24) & 0xff;
+ if (index > 0) {
+ substream = READ_ONCE(ff->tx_midi_substreams[1]);
+ if (substream != NULL) {
+ byte = (quad >> 16) & 0xff;
+ snd_rawmidi_receive(substream, &byte, 1);
+ }
+ }
+ }
+}
+
+const struct snd_ff_protocol snd_ff_protocol_ff400 = {
+ .handle_midi_msg = ff400_handle_midi_msg,
+ .fill_midi_msg = former_fill_midi_msg,
+ .get_clock = former_get_clock,
+ .switch_fetching_mode = former_switch_fetching_mode,
+ .allocate_resources = ff400_allocate_resources,
+ .begin_session = ff400_begin_session,
+ .finish_session = ff400_finish_session,
+ .dump_status = former_dump_status,
+};
diff --git a/sound/firewire/fireface/ff-protocol-latter.c b/sound/firewire/fireface/ff-protocol-latter.c
new file mode 100644
index 000000000..76c3eab36
--- /dev/null
+++ b/sound/firewire/fireface/ff-protocol-latter.c
@@ -0,0 +1,540 @@
+// SPDX-License-Identifier: GPL-2.0
+// ff-protocol-latter.c - a part of driver for RME Fireface series
+//
+// Copyright (c) 2019 Takashi Sakamoto
+
+#include <linux/delay.h>
+
+#include "ff.h"
+
+#define LATTER_STF 0xffff00000004ULL
+#define LATTER_ISOC_CHANNELS 0xffff00000008ULL
+#define LATTER_ISOC_START 0xffff0000000cULL
+#define LATTER_FETCH_MODE 0xffff00000010ULL
+#define LATTER_SYNC_STATUS 0x0000801c0000ULL
+
+// The content of sync status register differs between models.
+//
+// Fireface UCX:
+// 0xf0000000: (unidentified)
+// 0x0f000000: effective rate of sampling clock
+// 0x00f00000: detected rate of word clock on BNC interface
+// 0x000f0000: detected rate of ADAT or S/PDIF on optical interface
+// 0x0000f000: detected rate of S/PDIF on coaxial interface
+// 0x00000e00: effective source of sampling clock
+// 0x00000e00: Internal
+// 0x00000800: (unidentified)
+// 0x00000600: Word clock on BNC interface
+// 0x00000400: ADAT on optical interface
+// 0x00000200: S/PDIF on coaxial or optical interface
+// 0x00000100: Optical interface is used for ADAT signal
+// 0x00000080: (unidentified)
+// 0x00000040: Synchronized to word clock on BNC interface
+// 0x00000020: Synchronized to ADAT or S/PDIF on optical interface
+// 0x00000010: Synchronized to S/PDIF on coaxial interface
+// 0x00000008: (unidentified)
+// 0x00000004: Lock word clock on BNC interface
+// 0x00000002: Lock ADAT or S/PDIF on optical interface
+// 0x00000001: Lock S/PDIF on coaxial interface
+//
+// Fireface 802 (and perhaps UFX):
+// 0xf0000000: effective rate of sampling clock
+// 0x0f000000: detected rate of ADAT-B on 2nd optical interface
+// 0x00f00000: detected rate of ADAT-A on 1st optical interface
+// 0x000f0000: detected rate of AES/EBU on XLR or coaxial interface
+// 0x0000f000: detected rate of word clock on BNC interface
+// 0x00000e00: effective source of sampling clock
+// 0x00000e00: internal
+// 0x00000800: ADAT-B
+// 0x00000600: ADAT-A
+// 0x00000400: AES/EBU
+// 0x00000200: Word clock
+// 0x00000080: Synchronized to ADAT-B on 2nd optical interface
+// 0x00000040: Synchronized to ADAT-A on 1st optical interface
+// 0x00000020: Synchronized to AES/EBU on XLR or 2nd optical interface
+// 0x00000010: Synchronized to word clock on BNC interface
+// 0x00000008: Lock ADAT-B on 2nd optical interface
+// 0x00000004: Lock ADAT-A on 1st optical interface
+// 0x00000002: Lock AES/EBU on XLR or 2nd optical interface
+// 0x00000001: Lock word clock on BNC interface
+//
+// The pattern for rate bits:
+// 0x00: 32.0 kHz
+// 0x01: 44.1 kHz
+// 0x02: 48.0 kHz
+// 0x04: 64.0 kHz
+// 0x05: 88.2 kHz
+// 0x06: 96.0 kHz
+// 0x08: 128.0 kHz
+// 0x09: 176.4 kHz
+// 0x0a: 192.0 kHz
+static int parse_clock_bits(u32 data, unsigned int *rate,
+ enum snd_ff_clock_src *src,
+ enum snd_ff_unit_version unit_version)
+{
+ static const struct {
+ unsigned int rate;
+ u32 flag;
+ } *rate_entry, rate_entries[] = {
+ { 32000, 0x00, },
+ { 44100, 0x01, },
+ { 48000, 0x02, },
+ { 64000, 0x04, },
+ { 88200, 0x05, },
+ { 96000, 0x06, },
+ { 128000, 0x08, },
+ { 176400, 0x09, },
+ { 192000, 0x0a, },
+ };
+ static const struct {
+ enum snd_ff_clock_src src;
+ u32 flag;
+ } *clk_entry, *clk_entries, ucx_clk_entries[] = {
+ { SND_FF_CLOCK_SRC_SPDIF, 0x00000200, },
+ { SND_FF_CLOCK_SRC_ADAT1, 0x00000400, },
+ { SND_FF_CLOCK_SRC_WORD, 0x00000600, },
+ { SND_FF_CLOCK_SRC_INTERNAL, 0x00000e00, },
+ }, ufx_ff802_clk_entries[] = {
+ { SND_FF_CLOCK_SRC_WORD, 0x00000200, },
+ { SND_FF_CLOCK_SRC_SPDIF, 0x00000400, },
+ { SND_FF_CLOCK_SRC_ADAT1, 0x00000600, },
+ { SND_FF_CLOCK_SRC_ADAT2, 0x00000800, },
+ { SND_FF_CLOCK_SRC_INTERNAL, 0x00000e00, },
+ };
+ u32 rate_bits;
+ unsigned int clk_entry_count;
+ int i;
+
+ if (unit_version == SND_FF_UNIT_VERSION_UCX) {
+ rate_bits = (data & 0x0f000000) >> 24;
+ clk_entries = ucx_clk_entries;
+ clk_entry_count = ARRAY_SIZE(ucx_clk_entries);
+ } else {
+ rate_bits = (data & 0xf0000000) >> 28;
+ clk_entries = ufx_ff802_clk_entries;
+ clk_entry_count = ARRAY_SIZE(ufx_ff802_clk_entries);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(rate_entries); ++i) {
+ rate_entry = rate_entries + i;
+ if (rate_bits == rate_entry->flag) {
+ *rate = rate_entry->rate;
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(rate_entries))
+ return -EIO;
+
+ for (i = 0; i < clk_entry_count; ++i) {
+ clk_entry = clk_entries + i;
+ if ((data & 0x000e00) == clk_entry->flag) {
+ *src = clk_entry->src;
+ break;
+ }
+ }
+ if (i == clk_entry_count)
+ return -EIO;
+
+ return 0;
+}
+
+static int latter_get_clock(struct snd_ff *ff, unsigned int *rate,
+ enum snd_ff_clock_src *src)
+{
+ __le32 reg;
+ u32 data;
+ int err;
+
+ err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
+ LATTER_SYNC_STATUS, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+ data = le32_to_cpu(reg);
+
+ return parse_clock_bits(data, rate, src, ff->unit_version);
+}
+
+static int latter_switch_fetching_mode(struct snd_ff *ff, bool enable)
+{
+ u32 data;
+ __le32 reg;
+
+ if (enable)
+ data = 0x00000000;
+ else
+ data = 0xffffffff;
+ reg = cpu_to_le32(data);
+
+ return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ LATTER_FETCH_MODE, &reg, sizeof(reg), 0);
+}
+
+static int latter_allocate_resources(struct snd_ff *ff, unsigned int rate)
+{
+ enum snd_ff_stream_mode mode;
+ unsigned int code;
+ __le32 reg;
+ unsigned int count;
+ int i;
+ int err;
+
+ // Set the number of data blocks transferred in a second.
+ if (rate % 48000 == 0)
+ code = 0x04;
+ else if (rate % 44100 == 0)
+ code = 0x02;
+ else if (rate % 32000 == 0)
+ code = 0x00;
+ else
+ return -EINVAL;
+
+ if (rate >= 64000 && rate < 128000)
+ code |= 0x08;
+ else if (rate >= 128000)
+ code |= 0x10;
+
+ reg = cpu_to_le32(code);
+ err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ LATTER_STF, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+
+ // Confirm to shift transmission clock.
+ count = 0;
+ while (count++ < 10) {
+ unsigned int curr_rate;
+ enum snd_ff_clock_src src;
+
+ err = latter_get_clock(ff, &curr_rate, &src);
+ if (err < 0)
+ return err;
+
+ if (curr_rate == rate)
+ break;
+ }
+ if (count > 10)
+ return -ETIMEDOUT;
+
+ for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); ++i) {
+ if (rate == amdtp_rate_table[i])
+ break;
+ }
+ if (i == ARRAY_SIZE(amdtp_rate_table))
+ return -EINVAL;
+
+ err = snd_ff_stream_get_multiplier_mode(i, &mode);
+ if (err < 0)
+ return err;
+
+ // Keep resources for in-stream.
+ ff->tx_resources.channels_mask = 0x00000000000000ffuLL;
+ err = fw_iso_resources_allocate(&ff->tx_resources,
+ amdtp_stream_get_max_payload(&ff->tx_stream),
+ fw_parent_device(ff->unit)->max_speed);
+ if (err < 0)
+ return err;
+
+ // Keep resources for out-stream.
+ ff->rx_resources.channels_mask = 0x00000000000000ffuLL;
+ err = fw_iso_resources_allocate(&ff->rx_resources,
+ amdtp_stream_get_max_payload(&ff->rx_stream),
+ fw_parent_device(ff->unit)->max_speed);
+ if (err < 0)
+ fw_iso_resources_free(&ff->tx_resources);
+
+ return err;
+}
+
+static int latter_begin_session(struct snd_ff *ff, unsigned int rate)
+{
+ unsigned int generation = ff->rx_resources.generation;
+ unsigned int flag;
+ u32 data;
+ __le32 reg;
+ int err;
+
+ if (ff->unit_version == SND_FF_UNIT_VERSION_UCX) {
+ // For Fireface UCX. Always use the maximum number of data
+ // channels in data block of packet.
+ if (rate >= 32000 && rate <= 48000)
+ flag = 0x92;
+ else if (rate >= 64000 && rate <= 96000)
+ flag = 0x8e;
+ else if (rate >= 128000 && rate <= 192000)
+ flag = 0x8c;
+ else
+ return -EINVAL;
+ } else {
+ // For Fireface UFX and 802. Due to bandwidth limitation on
+ // IEEE 1394a (400 Mbps), Analog 1-12 and AES are available
+ // without any ADAT at quadruple speed.
+ if (rate >= 32000 && rate <= 48000)
+ flag = 0x9e;
+ else if (rate >= 64000 && rate <= 96000)
+ flag = 0x96;
+ else if (rate >= 128000 && rate <= 192000)
+ flag = 0x8e;
+ else
+ return -EINVAL;
+ }
+
+ if (generation != fw_parent_device(ff->unit)->card->generation) {
+ err = fw_iso_resources_update(&ff->tx_resources);
+ if (err < 0)
+ return err;
+
+ err = fw_iso_resources_update(&ff->rx_resources);
+ if (err < 0)
+ return err;
+ }
+
+ data = (ff->tx_resources.channel << 8) | ff->rx_resources.channel;
+ reg = cpu_to_le32(data);
+ err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ LATTER_ISOC_CHANNELS, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return err;
+
+ reg = cpu_to_le32(flag);
+ return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ LATTER_ISOC_START, &reg, sizeof(reg), 0);
+}
+
+static void latter_finish_session(struct snd_ff *ff)
+{
+ __le32 reg;
+
+ reg = cpu_to_le32(0x00000000);
+ snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ LATTER_ISOC_START, &reg, sizeof(reg), 0);
+}
+
+static void latter_dump_status(struct snd_ff *ff, struct snd_info_buffer *buffer)
+{
+ static const struct {
+ char *const label;
+ u32 locked_mask;
+ u32 synced_mask;
+ } *clk_entry, *clk_entries, ucx_clk_entries[] = {
+ { "S/PDIF", 0x00000001, 0x00000010, },
+ { "ADAT", 0x00000002, 0x00000020, },
+ { "WDClk", 0x00000004, 0x00000040, },
+ }, ufx_ff802_clk_entries[] = {
+ { "WDClk", 0x00000001, 0x00000010, },
+ { "AES/EBU", 0x00000002, 0x00000020, },
+ { "ADAT-A", 0x00000004, 0x00000040, },
+ { "ADAT-B", 0x00000008, 0x00000080, },
+ };
+ __le32 reg;
+ u32 data;
+ unsigned int rate;
+ enum snd_ff_clock_src src;
+ const char *label;
+ unsigned int clk_entry_count;
+ int i;
+ int err;
+
+ err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
+ LATTER_SYNC_STATUS, &reg, sizeof(reg), 0);
+ if (err < 0)
+ return;
+ data = le32_to_cpu(reg);
+
+ snd_iprintf(buffer, "External source detection:\n");
+
+ if (ff->unit_version == SND_FF_UNIT_VERSION_UCX) {
+ clk_entries = ucx_clk_entries;
+ clk_entry_count = ARRAY_SIZE(ucx_clk_entries);
+ } else {
+ clk_entries = ufx_ff802_clk_entries;
+ clk_entry_count = ARRAY_SIZE(ufx_ff802_clk_entries);
+ }
+
+ for (i = 0; i < clk_entry_count; ++i) {
+ clk_entry = clk_entries + i;
+ snd_iprintf(buffer, "%s: ", clk_entry->label);
+ if (data & clk_entry->locked_mask) {
+ if (data & clk_entry->synced_mask)
+ snd_iprintf(buffer, "sync\n");
+ else
+ snd_iprintf(buffer, "lock\n");
+ } else {
+ snd_iprintf(buffer, "none\n");
+ }
+ }
+
+ err = parse_clock_bits(data, &rate, &src, ff->unit_version);
+ if (err < 0)
+ return;
+ label = snd_ff_proc_get_clk_label(src);
+ if (!label)
+ return;
+
+ snd_iprintf(buffer, "Referred clock: %s %d\n", label, rate);
+}
+
+// NOTE: transactions are transferred within 0x00-0x7f in allocated range of
+// address. This seems to be for check of discontinuity in receiver side.
+//
+// Like Fireface 400, drivers can select one of 4 options for lower 4 bytes of
+// destination address by bit flags in quadlet register (little endian) at
+// 0x'ffff'0000'0014:
+//
+// bit flags: offset of destination address
+// - 0x00002000: 0x'....'....'0000'0000
+// - 0x00004000: 0x'....'....'0000'0080
+// - 0x00008000: 0x'....'....'0000'0100
+// - 0x00010000: 0x'....'....'0000'0180
+//
+// Drivers can suppress the device to transfer asynchronous transactions by
+// clear these bit flags.
+//
+// Actually, the register is write-only and includes the other settings such as
+// input attenuation. This driver allocates for the first option
+// (0x'....'....'0000'0000) and expects userspace application to configure the
+// register for it.
+static void latter_handle_midi_msg(struct snd_ff *ff, unsigned int offset,
+ __le32 *buf, size_t length)
+{
+ u32 data = le32_to_cpu(*buf);
+ unsigned int index = (data & 0x000000f0) >> 4;
+ u8 byte[3];
+ struct snd_rawmidi_substream *substream;
+ unsigned int len;
+
+ if (index >= ff->spec->midi_in_ports)
+ return;
+
+ switch (data & 0x0000000f) {
+ case 0x00000008:
+ case 0x00000009:
+ case 0x0000000a:
+ case 0x0000000b:
+ case 0x0000000e:
+ len = 3;
+ break;
+ case 0x0000000c:
+ case 0x0000000d:
+ len = 2;
+ break;
+ default:
+ len = data & 0x00000003;
+ if (len == 0)
+ len = 3;
+ break;
+ }
+
+ byte[0] = (data & 0x0000ff00) >> 8;
+ byte[1] = (data & 0x00ff0000) >> 16;
+ byte[2] = (data & 0xff000000) >> 24;
+
+ substream = READ_ONCE(ff->tx_midi_substreams[index]);
+ if (substream)
+ snd_rawmidi_receive(substream, byte, len);
+}
+
+/*
+ * When return minus value, given argument is not MIDI status.
+ * When return 0, given argument is a beginning of system exclusive.
+ * When return the others, given argument is MIDI data.
+ */
+static inline int calculate_message_bytes(u8 status)
+{
+ switch (status) {
+ case 0xf6: /* Tune request. */
+ case 0xf8: /* Timing clock. */
+ case 0xfa: /* Start. */
+ case 0xfb: /* Continue. */
+ case 0xfc: /* Stop. */
+ case 0xfe: /* Active sensing. */
+ case 0xff: /* System reset. */
+ return 1;
+ case 0xf1: /* MIDI time code quarter frame. */
+ case 0xf3: /* Song select. */
+ return 2;
+ case 0xf2: /* Song position pointer. */
+ return 3;
+ case 0xf0: /* Exclusive. */
+ return 0;
+ case 0xf7: /* End of exclusive. */
+ break;
+ case 0xf4: /* Undefined. */
+ case 0xf5: /* Undefined. */
+ case 0xf9: /* Undefined. */
+ case 0xfd: /* Undefined. */
+ break;
+ default:
+ switch (status & 0xf0) {
+ case 0x80: /* Note on. */
+ case 0x90: /* Note off. */
+ case 0xa0: /* Polyphonic key pressure. */
+ case 0xb0: /* Control change and Mode change. */
+ case 0xe0: /* Pitch bend change. */
+ return 3;
+ case 0xc0: /* Program change. */
+ case 0xd0: /* Channel pressure. */
+ return 2;
+ default:
+ break;
+ }
+ break;
+ }
+
+ return -EINVAL;
+}
+
+static int latter_fill_midi_msg(struct snd_ff *ff,
+ struct snd_rawmidi_substream *substream,
+ unsigned int port)
+{
+ u32 data = {0};
+ u8 *buf = (u8 *)&data;
+ int consumed;
+
+ buf[0] = port << 4;
+ consumed = snd_rawmidi_transmit_peek(substream, buf + 1, 3);
+ if (consumed <= 0)
+ return consumed;
+
+ if (!ff->on_sysex[port]) {
+ if (buf[1] != 0xf0) {
+ if (consumed < calculate_message_bytes(buf[1]))
+ return 0;
+ } else {
+ // The beginning of exclusives.
+ ff->on_sysex[port] = true;
+ }
+
+ buf[0] |= consumed;
+ } else {
+ if (buf[1] != 0xf7) {
+ if (buf[2] == 0xf7 || buf[3] == 0xf7) {
+ // Transfer end code at next time.
+ consumed -= 1;
+ }
+
+ buf[0] |= consumed;
+ } else {
+ // The end of exclusives.
+ ff->on_sysex[port] = false;
+ consumed = 1;
+ buf[0] |= 0x0f;
+ }
+ }
+
+ ff->msg_buf[port][0] = cpu_to_le32(data);
+ ff->rx_bytes[port] = consumed;
+
+ return 1;
+}
+
+const struct snd_ff_protocol snd_ff_protocol_latter = {
+ .handle_midi_msg = latter_handle_midi_msg,
+ .fill_midi_msg = latter_fill_midi_msg,
+ .get_clock = latter_get_clock,
+ .switch_fetching_mode = latter_switch_fetching_mode,
+ .allocate_resources = latter_allocate_resources,
+ .begin_session = latter_begin_session,
+ .finish_session = latter_finish_session,
+ .dump_status = latter_dump_status,
+};
diff --git a/sound/firewire/fireface/ff-stream.c b/sound/firewire/fireface/ff-stream.c
new file mode 100644
index 000000000..95bf405ad
--- /dev/null
+++ b/sound/firewire/fireface/ff-stream.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ff-stream.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ */
+
+#include "ff.h"
+
+#define READY_TIMEOUT_MS 200
+
+int snd_ff_stream_get_multiplier_mode(enum cip_sfc sfc,
+ enum snd_ff_stream_mode *mode)
+{
+ static const enum snd_ff_stream_mode modes[] = {
+ [CIP_SFC_32000] = SND_FF_STREAM_MODE_LOW,
+ [CIP_SFC_44100] = SND_FF_STREAM_MODE_LOW,
+ [CIP_SFC_48000] = SND_FF_STREAM_MODE_LOW,
+ [CIP_SFC_88200] = SND_FF_STREAM_MODE_MID,
+ [CIP_SFC_96000] = SND_FF_STREAM_MODE_MID,
+ [CIP_SFC_176400] = SND_FF_STREAM_MODE_HIGH,
+ [CIP_SFC_192000] = SND_FF_STREAM_MODE_HIGH,
+ };
+
+ if (sfc >= CIP_SFC_COUNT)
+ return -EINVAL;
+
+ *mode = modes[sfc];
+
+ return 0;
+}
+
+static inline void finish_session(struct snd_ff *ff)
+{
+ ff->spec->protocol->finish_session(ff);
+ ff->spec->protocol->switch_fetching_mode(ff, false);
+}
+
+static int init_stream(struct snd_ff *ff, struct amdtp_stream *s)
+{
+ struct fw_iso_resources *resources;
+ enum amdtp_stream_direction dir;
+ int err;
+
+ if (s == &ff->tx_stream) {
+ resources = &ff->tx_resources;
+ dir = AMDTP_IN_STREAM;
+ } else {
+ resources = &ff->rx_resources;
+ dir = AMDTP_OUT_STREAM;
+ }
+
+ err = fw_iso_resources_init(resources, ff->unit);
+ if (err < 0)
+ return err;
+
+ err = amdtp_ff_init(s, ff->unit, dir);
+ if (err < 0)
+ fw_iso_resources_destroy(resources);
+
+ return err;
+}
+
+static void destroy_stream(struct snd_ff *ff, struct amdtp_stream *s)
+{
+ amdtp_stream_destroy(s);
+
+ if (s == &ff->tx_stream)
+ fw_iso_resources_destroy(&ff->tx_resources);
+ else
+ fw_iso_resources_destroy(&ff->rx_resources);
+}
+
+int snd_ff_stream_init_duplex(struct snd_ff *ff)
+{
+ int err;
+
+ err = init_stream(ff, &ff->rx_stream);
+ if (err < 0)
+ return err;
+
+ err = init_stream(ff, &ff->tx_stream);
+ if (err < 0) {
+ destroy_stream(ff, &ff->rx_stream);
+ return err;
+ }
+
+ err = amdtp_domain_init(&ff->domain);
+ if (err < 0) {
+ destroy_stream(ff, &ff->rx_stream);
+ destroy_stream(ff, &ff->tx_stream);
+ }
+
+ return err;
+}
+
+/*
+ * This function should be called before starting streams or after stopping
+ * streams.
+ */
+void snd_ff_stream_destroy_duplex(struct snd_ff *ff)
+{
+ amdtp_domain_destroy(&ff->domain);
+
+ destroy_stream(ff, &ff->rx_stream);
+ destroy_stream(ff, &ff->tx_stream);
+}
+
+int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate,
+ unsigned int frames_per_period,
+ unsigned int frames_per_buffer)
+{
+ unsigned int curr_rate;
+ enum snd_ff_clock_src src;
+ int err;
+
+ err = ff->spec->protocol->get_clock(ff, &curr_rate, &src);
+ if (err < 0)
+ return err;
+
+ if (ff->substreams_counter == 0 || curr_rate != rate) {
+ enum snd_ff_stream_mode mode;
+ int i;
+
+ amdtp_domain_stop(&ff->domain);
+ finish_session(ff);
+
+ fw_iso_resources_free(&ff->tx_resources);
+ fw_iso_resources_free(&ff->rx_resources);
+
+ for (i = 0; i < CIP_SFC_COUNT; ++i) {
+ if (amdtp_rate_table[i] == rate)
+ break;
+ }
+ if (i >= CIP_SFC_COUNT)
+ return -EINVAL;
+
+ err = snd_ff_stream_get_multiplier_mode(i, &mode);
+ if (err < 0)
+ return err;
+
+ err = amdtp_ff_set_parameters(&ff->tx_stream, rate,
+ ff->spec->pcm_capture_channels[mode]);
+ if (err < 0)
+ return err;
+
+ err = amdtp_ff_set_parameters(&ff->rx_stream, rate,
+ ff->spec->pcm_playback_channels[mode]);
+ if (err < 0)
+ return err;
+
+ err = ff->spec->protocol->allocate_resources(ff, rate);
+ if (err < 0)
+ return err;
+
+ err = amdtp_domain_set_events_per_period(&ff->domain,
+ frames_per_period, frames_per_buffer);
+ if (err < 0) {
+ fw_iso_resources_free(&ff->tx_resources);
+ fw_iso_resources_free(&ff->rx_resources);
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate)
+{
+ int err;
+
+ if (ff->substreams_counter == 0)
+ return 0;
+
+ if (amdtp_streaming_error(&ff->tx_stream) ||
+ amdtp_streaming_error(&ff->rx_stream)) {
+ amdtp_domain_stop(&ff->domain);
+ finish_session(ff);
+ }
+
+ /*
+ * Regardless of current source of clock signal, drivers transfer some
+ * packets. Then, the device transfers packets.
+ */
+ if (!amdtp_stream_running(&ff->rx_stream)) {
+ int spd = fw_parent_device(ff->unit)->max_speed;
+
+ err = ff->spec->protocol->begin_session(ff, rate);
+ if (err < 0)
+ goto error;
+
+ err = amdtp_domain_add_stream(&ff->domain, &ff->rx_stream,
+ ff->rx_resources.channel, spd);
+ if (err < 0)
+ goto error;
+
+ err = amdtp_domain_add_stream(&ff->domain, &ff->tx_stream,
+ ff->tx_resources.channel, spd);
+ if (err < 0)
+ goto error;
+
+ // NOTE: The device doesn't transfer packets unless receiving any packet. The
+ // sequence of tx packets includes cycle skip corresponding to empty packet or
+ // NODATA packet in IEC 61883-1/6. The sequence of the number of data blocks per
+ // packet is important for media clock recovery.
+ err = amdtp_domain_start(&ff->domain, 0, true, true);
+ if (err < 0)
+ goto error;
+
+ if (!amdtp_domain_wait_ready(&ff->domain, READY_TIMEOUT_MS)) {
+ err = -ETIMEDOUT;
+ goto error;
+ }
+
+ err = ff->spec->protocol->switch_fetching_mode(ff, true);
+ if (err < 0)
+ goto error;
+ }
+
+ return 0;
+error:
+ amdtp_domain_stop(&ff->domain);
+ finish_session(ff);
+
+ return err;
+}
+
+void snd_ff_stream_stop_duplex(struct snd_ff *ff)
+{
+ if (ff->substreams_counter == 0) {
+ amdtp_domain_stop(&ff->domain);
+ finish_session(ff);
+
+ fw_iso_resources_free(&ff->tx_resources);
+ fw_iso_resources_free(&ff->rx_resources);
+ }
+}
+
+void snd_ff_stream_update_duplex(struct snd_ff *ff)
+{
+ amdtp_domain_stop(&ff->domain);
+
+ // The device discontinue to transfer packets.
+ amdtp_stream_pcm_abort(&ff->tx_stream);
+ amdtp_stream_pcm_abort(&ff->rx_stream);
+}
+
+void snd_ff_stream_lock_changed(struct snd_ff *ff)
+{
+ ff->dev_lock_changed = true;
+ wake_up(&ff->hwdep_wait);
+}
+
+int snd_ff_stream_lock_try(struct snd_ff *ff)
+{
+ int err;
+
+ spin_lock_irq(&ff->lock);
+
+ /* user land lock this */
+ if (ff->dev_lock_count < 0) {
+ err = -EBUSY;
+ goto end;
+ }
+
+ /* this is the first time */
+ if (ff->dev_lock_count++ == 0)
+ snd_ff_stream_lock_changed(ff);
+ err = 0;
+end:
+ spin_unlock_irq(&ff->lock);
+ return err;
+}
+
+void snd_ff_stream_lock_release(struct snd_ff *ff)
+{
+ spin_lock_irq(&ff->lock);
+
+ if (WARN_ON(ff->dev_lock_count <= 0))
+ goto end;
+ if (--ff->dev_lock_count == 0)
+ snd_ff_stream_lock_changed(ff);
+end:
+ spin_unlock_irq(&ff->lock);
+}
diff --git a/sound/firewire/fireface/ff-transaction.c b/sound/firewire/fireface/ff-transaction.c
new file mode 100644
index 000000000..ee7122c46
--- /dev/null
+++ b/sound/firewire/fireface/ff-transaction.c
@@ -0,0 +1,232 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ff-transaction.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ */
+
+#include "ff.h"
+
+static void finish_transmit_midi_msg(struct snd_ff *ff, unsigned int port,
+ int rcode)
+{
+ struct snd_rawmidi_substream *substream =
+ READ_ONCE(ff->rx_midi_substreams[port]);
+
+ if (rcode_is_permanent_error(rcode)) {
+ ff->rx_midi_error[port] = true;
+ return;
+ }
+
+ if (rcode != RCODE_COMPLETE) {
+ /* Transfer the message again, immediately. */
+ ff->next_ktime[port] = 0;
+ schedule_work(&ff->rx_midi_work[port]);
+ return;
+ }
+
+ snd_rawmidi_transmit_ack(substream, ff->rx_bytes[port]);
+ ff->rx_bytes[port] = 0;
+
+ if (!snd_rawmidi_transmit_empty(substream))
+ schedule_work(&ff->rx_midi_work[port]);
+}
+
+static void finish_transmit_midi0_msg(struct fw_card *card, int rcode,
+ void *data, size_t length,
+ void *callback_data)
+{
+ struct snd_ff *ff =
+ container_of(callback_data, struct snd_ff, transactions[0]);
+ finish_transmit_midi_msg(ff, 0, rcode);
+}
+
+static void finish_transmit_midi1_msg(struct fw_card *card, int rcode,
+ void *data, size_t length,
+ void *callback_data)
+{
+ struct snd_ff *ff =
+ container_of(callback_data, struct snd_ff, transactions[1]);
+ finish_transmit_midi_msg(ff, 1, rcode);
+}
+
+static void transmit_midi_msg(struct snd_ff *ff, unsigned int port)
+{
+ struct snd_rawmidi_substream *substream =
+ READ_ONCE(ff->rx_midi_substreams[port]);
+ int quad_count;
+
+ struct fw_device *fw_dev = fw_parent_device(ff->unit);
+ unsigned long long addr;
+ int generation;
+ fw_transaction_callback_t callback;
+ int tcode;
+
+ if (substream == NULL || snd_rawmidi_transmit_empty(substream))
+ return;
+
+ if (ff->rx_bytes[port] > 0 || ff->rx_midi_error[port])
+ return;
+
+ /* Do it in next chance. */
+ if (ktime_after(ff->next_ktime[port], ktime_get())) {
+ schedule_work(&ff->rx_midi_work[port]);
+ return;
+ }
+
+ quad_count = ff->spec->protocol->fill_midi_msg(ff, substream, port);
+ if (quad_count <= 0)
+ return;
+
+ if (port == 0) {
+ addr = ff->spec->midi_rx_addrs[0];
+ callback = finish_transmit_midi0_msg;
+ } else {
+ addr = ff->spec->midi_rx_addrs[1];
+ callback = finish_transmit_midi1_msg;
+ }
+
+ /* Set interval to next transaction. */
+ ff->next_ktime[port] = ktime_add_ns(ktime_get(),
+ ff->rx_bytes[port] * 8 * (NSEC_PER_SEC / 31250));
+
+ if (quad_count == 1)
+ tcode = TCODE_WRITE_QUADLET_REQUEST;
+ else
+ tcode = TCODE_WRITE_BLOCK_REQUEST;
+
+ /*
+ * In Linux FireWire core, when generation is updated with memory
+ * barrier, node id has already been updated. In this module, After
+ * this smp_rmb(), load/store instructions to memory are completed.
+ * Thus, both of generation and node id are available with recent
+ * values. This is a light-serialization solution to handle bus reset
+ * events on IEEE 1394 bus.
+ */
+ generation = fw_dev->generation;
+ smp_rmb();
+ fw_send_request(fw_dev->card, &ff->transactions[port], tcode,
+ fw_dev->node_id, generation, fw_dev->max_speed,
+ addr, &ff->msg_buf[port], quad_count * 4,
+ callback, &ff->transactions[port]);
+}
+
+static void transmit_midi0_msg(struct work_struct *work)
+{
+ struct snd_ff *ff = container_of(work, struct snd_ff, rx_midi_work[0]);
+
+ transmit_midi_msg(ff, 0);
+}
+
+static void transmit_midi1_msg(struct work_struct *work)
+{
+ struct snd_ff *ff = container_of(work, struct snd_ff, rx_midi_work[1]);
+
+ transmit_midi_msg(ff, 1);
+}
+
+static void handle_midi_msg(struct fw_card *card, struct fw_request *request,
+ int tcode, int destination, int source,
+ int generation, unsigned long long offset,
+ void *data, size_t length, void *callback_data)
+{
+ struct snd_ff *ff = callback_data;
+ __le32 *buf = data;
+
+ fw_send_response(card, request, RCODE_COMPLETE);
+
+ offset -= ff->async_handler.offset;
+ ff->spec->protocol->handle_midi_msg(ff, (unsigned int)offset, buf,
+ length);
+}
+
+static int allocate_own_address(struct snd_ff *ff, int i)
+{
+ struct fw_address_region midi_msg_region;
+ int err;
+
+ ff->async_handler.length = ff->spec->midi_addr_range;
+ ff->async_handler.address_callback = handle_midi_msg;
+ ff->async_handler.callback_data = ff;
+
+ midi_msg_region.start = 0x000100000000ull * i;
+ midi_msg_region.end = midi_msg_region.start + ff->async_handler.length;
+
+ err = fw_core_add_address_handler(&ff->async_handler, &midi_msg_region);
+ if (err >= 0) {
+ /* Controllers are allowed to register this region. */
+ if (ff->async_handler.offset & 0x0000ffffffff) {
+ fw_core_remove_address_handler(&ff->async_handler);
+ err = -EAGAIN;
+ }
+ }
+
+ return err;
+}
+
+// Controllers are allowed to register higher 4 bytes of destination address to
+// receive asynchronous transactions for MIDI messages, while the way to
+// register lower 4 bytes of address is different depending on protocols. For
+// details, please refer to comments in protocol implementations.
+//
+// This driver expects userspace applications to configure registers for the
+// lower address because in most cases such registers has the other settings.
+int snd_ff_transaction_reregister(struct snd_ff *ff)
+{
+ struct fw_card *fw_card = fw_parent_device(ff->unit)->card;
+ u32 addr;
+ __le32 reg;
+
+ /*
+ * Controllers are allowed to register its node ID and upper 2 byte of
+ * local address to listen asynchronous transactions.
+ */
+ addr = (fw_card->node_id << 16) | (ff->async_handler.offset >> 32);
+ reg = cpu_to_le32(addr);
+ return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ ff->spec->midi_high_addr,
+ &reg, sizeof(reg), 0);
+}
+
+int snd_ff_transaction_register(struct snd_ff *ff)
+{
+ int i, err;
+
+ /*
+ * Allocate in Memory Space of IEC 13213, but lower 4 byte in LSB should
+ * be zero due to device specification.
+ */
+ for (i = 0; i < 0xffff; i++) {
+ err = allocate_own_address(ff, i);
+ if (err != -EBUSY && err != -EAGAIN)
+ break;
+ }
+ if (err < 0)
+ return err;
+
+ err = snd_ff_transaction_reregister(ff);
+ if (err < 0)
+ return err;
+
+ INIT_WORK(&ff->rx_midi_work[0], transmit_midi0_msg);
+ INIT_WORK(&ff->rx_midi_work[1], transmit_midi1_msg);
+
+ return 0;
+}
+
+void snd_ff_transaction_unregister(struct snd_ff *ff)
+{
+ __le32 reg;
+
+ if (ff->async_handler.callback_data == NULL)
+ return;
+ ff->async_handler.callback_data = NULL;
+
+ /* Release higher 4 bytes of address. */
+ reg = cpu_to_le32(0x00000000);
+ snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
+ ff->spec->midi_high_addr,
+ &reg, sizeof(reg), 0);
+
+ fw_core_remove_address_handler(&ff->async_handler);
+}
diff --git a/sound/firewire/fireface/ff.c b/sound/firewire/fireface/ff.c
new file mode 100644
index 000000000..7bf51d062
--- /dev/null
+++ b/sound/firewire/fireface/ff.c
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ff.c - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ */
+
+#include "ff.h"
+
+#define OUI_RME 0x000a35
+
+MODULE_DESCRIPTION("RME Fireface series Driver");
+MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
+MODULE_LICENSE("GPL v2");
+
+static void name_card(struct snd_ff *ff)
+{
+ struct fw_device *fw_dev = fw_parent_device(ff->unit);
+ const char *const names[] = {
+ [SND_FF_UNIT_VERSION_FF800] = "Fireface800",
+ [SND_FF_UNIT_VERSION_FF400] = "Fireface400",
+ [SND_FF_UNIT_VERSION_UFX] = "FirefaceUFX",
+ [SND_FF_UNIT_VERSION_UCX] = "FirefaceUCX",
+ [SND_FF_UNIT_VERSION_802] = "Fireface802",
+ };
+ const char *name;
+
+ name = names[ff->unit_version];
+
+ strcpy(ff->card->driver, "Fireface");
+ strcpy(ff->card->shortname, name);
+ strcpy(ff->card->mixername, name);
+ snprintf(ff->card->longname, sizeof(ff->card->longname),
+ "RME %s, GUID %08x%08x at %s, S%d", name,
+ fw_dev->config_rom[3], fw_dev->config_rom[4],
+ dev_name(&ff->unit->device), 100 << fw_dev->max_speed);
+}
+
+static void ff_card_free(struct snd_card *card)
+{
+ struct snd_ff *ff = card->private_data;
+
+ snd_ff_stream_destroy_duplex(ff);
+ snd_ff_transaction_unregister(ff);
+
+ mutex_destroy(&ff->mutex);
+ fw_unit_put(ff->unit);
+}
+
+static int snd_ff_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry)
+{
+ struct snd_card *card;
+ struct snd_ff *ff;
+ int err;
+
+ err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*ff), &card);
+ if (err < 0)
+ return err;
+ card->private_free = ff_card_free;
+
+ ff = card->private_data;
+ ff->unit = fw_unit_get(unit);
+ dev_set_drvdata(&unit->device, ff);
+ ff->card = card;
+
+ mutex_init(&ff->mutex);
+ spin_lock_init(&ff->lock);
+ init_waitqueue_head(&ff->hwdep_wait);
+
+ ff->unit_version = entry->version;
+ ff->spec = (const struct snd_ff_spec *)entry->driver_data;
+
+ err = snd_ff_transaction_register(ff);
+ if (err < 0)
+ goto error;
+
+ name_card(ff);
+
+ err = snd_ff_stream_init_duplex(ff);
+ if (err < 0)
+ goto error;
+
+ snd_ff_proc_init(ff);
+
+ err = snd_ff_create_midi_devices(ff);
+ if (err < 0)
+ goto error;
+
+ err = snd_ff_create_pcm_devices(ff);
+ if (err < 0)
+ goto error;
+
+ err = snd_ff_create_hwdep_devices(ff);
+ if (err < 0)
+ goto error;
+
+ err = snd_card_register(card);
+ if (err < 0)
+ goto error;
+
+ return 0;
+error:
+ snd_card_free(card);
+ return err;
+}
+
+static void snd_ff_update(struct fw_unit *unit)
+{
+ struct snd_ff *ff = dev_get_drvdata(&unit->device);
+
+ snd_ff_transaction_reregister(ff);
+
+ snd_ff_stream_update_duplex(ff);
+}
+
+static void snd_ff_remove(struct fw_unit *unit)
+{
+ struct snd_ff *ff = dev_get_drvdata(&unit->device);
+
+ // Block till all of ALSA character devices are released.
+ snd_card_free(ff->card);
+}
+
+static const struct snd_ff_spec spec_ff800 = {
+ .pcm_capture_channels = {28, 20, 12},
+ .pcm_playback_channels = {28, 20, 12},
+ .midi_in_ports = 1,
+ .midi_out_ports = 1,
+ .protocol = &snd_ff_protocol_ff800,
+ .midi_high_addr = 0x000200000320ull,
+ .midi_addr_range = 12,
+ .midi_rx_addrs = {0x000080180000ull, 0},
+};
+
+static const struct snd_ff_spec spec_ff400 = {
+ .pcm_capture_channels = {18, 14, 10},
+ .pcm_playback_channels = {18, 14, 10},
+ .midi_in_ports = 2,
+ .midi_out_ports = 2,
+ .protocol = &snd_ff_protocol_ff400,
+ .midi_high_addr = 0x0000801003f4ull,
+ .midi_addr_range = SND_FF_MAXIMIM_MIDI_QUADS * 4,
+ .midi_rx_addrs = {0x000080180000ull, 0x000080190000ull},
+};
+
+static const struct snd_ff_spec spec_ucx = {
+ .pcm_capture_channels = {18, 14, 12},
+ .pcm_playback_channels = {18, 14, 12},
+ .midi_in_ports = 2,
+ .midi_out_ports = 2,
+ .protocol = &snd_ff_protocol_latter,
+ .midi_high_addr = 0xffff00000034ull,
+ .midi_addr_range = 0x80,
+ .midi_rx_addrs = {0xffff00000030ull, 0xffff00000030ull},
+};
+
+static const struct snd_ff_spec spec_ufx_802 = {
+ .pcm_capture_channels = {30, 22, 14},
+ .pcm_playback_channels = {30, 22, 14},
+ .midi_in_ports = 1,
+ .midi_out_ports = 1,
+ .protocol = &snd_ff_protocol_latter,
+ .midi_high_addr = 0xffff00000034ull,
+ .midi_addr_range = 0x80,
+ .midi_rx_addrs = {0xffff00000030ull, 0xffff00000030ull},
+};
+
+static const struct ieee1394_device_id snd_ff_id_table[] = {
+ /* Fireface 800 */
+ {
+ .match_flags = IEEE1394_MATCH_VENDOR_ID |
+ IEEE1394_MATCH_SPECIFIER_ID |
+ IEEE1394_MATCH_VERSION |
+ IEEE1394_MATCH_MODEL_ID,
+ .vendor_id = OUI_RME,
+ .specifier_id = OUI_RME,
+ .version = SND_FF_UNIT_VERSION_FF800,
+ .model_id = 0x101800,
+ .driver_data = (kernel_ulong_t)&spec_ff800,
+ },
+ /* Fireface 400 */
+ {
+ .match_flags = IEEE1394_MATCH_VENDOR_ID |
+ IEEE1394_MATCH_SPECIFIER_ID |
+ IEEE1394_MATCH_VERSION |
+ IEEE1394_MATCH_MODEL_ID,
+ .vendor_id = OUI_RME,
+ .specifier_id = OUI_RME,
+ .version = SND_FF_UNIT_VERSION_FF400,
+ .model_id = 0x101800,
+ .driver_data = (kernel_ulong_t)&spec_ff400,
+ },
+ // Fireface UFX.
+ {
+ .match_flags = IEEE1394_MATCH_VENDOR_ID |
+ IEEE1394_MATCH_SPECIFIER_ID |
+ IEEE1394_MATCH_VERSION |
+ IEEE1394_MATCH_MODEL_ID,
+ .vendor_id = OUI_RME,
+ .specifier_id = OUI_RME,
+ .version = SND_FF_UNIT_VERSION_UFX,
+ .model_id = 0x101800,
+ .driver_data = (kernel_ulong_t)&spec_ufx_802,
+ },
+ // Fireface UCX.
+ {
+ .match_flags = IEEE1394_MATCH_VENDOR_ID |
+ IEEE1394_MATCH_SPECIFIER_ID |
+ IEEE1394_MATCH_VERSION |
+ IEEE1394_MATCH_MODEL_ID,
+ .vendor_id = OUI_RME,
+ .specifier_id = OUI_RME,
+ .version = SND_FF_UNIT_VERSION_UCX,
+ .model_id = 0x101800,
+ .driver_data = (kernel_ulong_t)&spec_ucx,
+ },
+ // Fireface 802.
+ {
+ .match_flags = IEEE1394_MATCH_VENDOR_ID |
+ IEEE1394_MATCH_SPECIFIER_ID |
+ IEEE1394_MATCH_VERSION |
+ IEEE1394_MATCH_MODEL_ID,
+ .vendor_id = OUI_RME,
+ .specifier_id = OUI_RME,
+ .version = SND_FF_UNIT_VERSION_802,
+ .model_id = 0x101800,
+ .driver_data = (kernel_ulong_t)&spec_ufx_802,
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(ieee1394, snd_ff_id_table);
+
+static struct fw_driver ff_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = KBUILD_MODNAME,
+ .bus = &fw_bus_type,
+ },
+ .probe = snd_ff_probe,
+ .update = snd_ff_update,
+ .remove = snd_ff_remove,
+ .id_table = snd_ff_id_table,
+};
+
+static int __init snd_ff_init(void)
+{
+ return driver_register(&ff_driver.driver);
+}
+
+static void __exit snd_ff_exit(void)
+{
+ driver_unregister(&ff_driver.driver);
+}
+
+module_init(snd_ff_init);
+module_exit(snd_ff_exit);
diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h
new file mode 100644
index 000000000..0535f0b58
--- /dev/null
+++ b/sound/firewire/fireface/ff.h
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * ff.h - a part of driver for RME Fireface series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto
+ */
+
+#ifndef SOUND_FIREFACE_H_INCLUDED
+#define SOUND_FIREFACE_H_INCLUDED
+
+#include <linux/device.h>
+#include <linux/firewire.h>
+#include <linux/firewire-constants.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/compat.h>
+#include <linux/sched/signal.h>
+
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/rawmidi.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/hwdep.h>
+#include <sound/firewire.h>
+
+#include "../lib.h"
+#include "../amdtp-stream.h"
+#include "../iso-resources.h"
+
+#define SND_FF_MAXIMIM_MIDI_QUADS 9
+#define SND_FF_IN_MIDI_PORTS 2
+#define SND_FF_OUT_MIDI_PORTS 2
+
+enum snd_ff_unit_version {
+ SND_FF_UNIT_VERSION_FF800 = 0x000001,
+ SND_FF_UNIT_VERSION_FF400 = 0x000002,
+ SND_FF_UNIT_VERSION_UFX = 0x000003,
+ SND_FF_UNIT_VERSION_UCX = 0x000004,
+ SND_FF_UNIT_VERSION_802 = 0x000005,
+};
+
+enum snd_ff_stream_mode {
+ SND_FF_STREAM_MODE_LOW = 0,
+ SND_FF_STREAM_MODE_MID,
+ SND_FF_STREAM_MODE_HIGH,
+ SND_FF_STREAM_MODE_COUNT,
+};
+
+struct snd_ff_protocol;
+struct snd_ff_spec {
+ const unsigned int pcm_capture_channels[SND_FF_STREAM_MODE_COUNT];
+ const unsigned int pcm_playback_channels[SND_FF_STREAM_MODE_COUNT];
+
+ unsigned int midi_in_ports;
+ unsigned int midi_out_ports;
+
+ const struct snd_ff_protocol *protocol;
+ u64 midi_high_addr;
+ u8 midi_addr_range;
+ u64 midi_rx_addrs[SND_FF_OUT_MIDI_PORTS];
+};
+
+struct snd_ff {
+ struct snd_card *card;
+ struct fw_unit *unit;
+ struct mutex mutex;
+ spinlock_t lock;
+
+ enum snd_ff_unit_version unit_version;
+ const struct snd_ff_spec *spec;
+
+ /* To handle MIDI tx. */
+ struct snd_rawmidi_substream *tx_midi_substreams[SND_FF_IN_MIDI_PORTS];
+ struct fw_address_handler async_handler;
+
+ /* TO handle MIDI rx. */
+ struct snd_rawmidi_substream *rx_midi_substreams[SND_FF_OUT_MIDI_PORTS];
+ bool on_sysex[SND_FF_OUT_MIDI_PORTS];
+ __le32 msg_buf[SND_FF_OUT_MIDI_PORTS][SND_FF_MAXIMIM_MIDI_QUADS];
+ struct work_struct rx_midi_work[SND_FF_OUT_MIDI_PORTS];
+ struct fw_transaction transactions[SND_FF_OUT_MIDI_PORTS];
+ ktime_t next_ktime[SND_FF_OUT_MIDI_PORTS];
+ bool rx_midi_error[SND_FF_OUT_MIDI_PORTS];
+ unsigned int rx_bytes[SND_FF_OUT_MIDI_PORTS];
+
+ unsigned int substreams_counter;
+ struct amdtp_stream tx_stream;
+ struct amdtp_stream rx_stream;
+ struct fw_iso_resources tx_resources;
+ struct fw_iso_resources rx_resources;
+
+ int dev_lock_count;
+ bool dev_lock_changed;
+ wait_queue_head_t hwdep_wait;
+
+ struct amdtp_domain domain;
+};
+
+enum snd_ff_clock_src {
+ SND_FF_CLOCK_SRC_INTERNAL,
+ SND_FF_CLOCK_SRC_SPDIF,
+ SND_FF_CLOCK_SRC_ADAT1,
+ SND_FF_CLOCK_SRC_ADAT2,
+ SND_FF_CLOCK_SRC_WORD,
+ SND_FF_CLOCK_SRC_LTC,
+ /* TODO: perhaps TCO exists. */
+};
+
+struct snd_ff_protocol {
+ void (*handle_midi_msg)(struct snd_ff *ff, unsigned int offset,
+ __le32 *buf, size_t length);
+ int (*fill_midi_msg)(struct snd_ff *ff,
+ struct snd_rawmidi_substream *substream,
+ unsigned int port);
+ int (*get_clock)(struct snd_ff *ff, unsigned int *rate,
+ enum snd_ff_clock_src *src);
+ int (*switch_fetching_mode)(struct snd_ff *ff, bool enable);
+ int (*allocate_resources)(struct snd_ff *ff, unsigned int rate);
+ int (*begin_session)(struct snd_ff *ff, unsigned int rate);
+ void (*finish_session)(struct snd_ff *ff);
+ void (*dump_status)(struct snd_ff *ff, struct snd_info_buffer *buffer);
+};
+
+extern const struct snd_ff_protocol snd_ff_protocol_ff800;
+extern const struct snd_ff_protocol snd_ff_protocol_ff400;
+extern const struct snd_ff_protocol snd_ff_protocol_latter;
+
+int snd_ff_transaction_register(struct snd_ff *ff);
+int snd_ff_transaction_reregister(struct snd_ff *ff);
+void snd_ff_transaction_unregister(struct snd_ff *ff);
+
+int amdtp_ff_set_parameters(struct amdtp_stream *s, unsigned int rate,
+ unsigned int pcm_channels);
+int amdtp_ff_add_pcm_hw_constraints(struct amdtp_stream *s,
+ struct snd_pcm_runtime *runtime);
+int amdtp_ff_init(struct amdtp_stream *s, struct fw_unit *unit,
+ enum amdtp_stream_direction dir);
+
+int snd_ff_stream_get_multiplier_mode(enum cip_sfc sfc,
+ enum snd_ff_stream_mode *mode);
+int snd_ff_stream_init_duplex(struct snd_ff *ff);
+void snd_ff_stream_destroy_duplex(struct snd_ff *ff);
+int snd_ff_stream_reserve_duplex(struct snd_ff *ff, unsigned int rate,
+ unsigned int frames_per_period,
+ unsigned int frames_per_buffer);
+int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate);
+void snd_ff_stream_stop_duplex(struct snd_ff *ff);
+void snd_ff_stream_update_duplex(struct snd_ff *ff);
+
+void snd_ff_stream_lock_changed(struct snd_ff *ff);
+int snd_ff_stream_lock_try(struct snd_ff *ff);
+void snd_ff_stream_lock_release(struct snd_ff *ff);
+
+void snd_ff_proc_init(struct snd_ff *ff);
+const char *snd_ff_proc_get_clk_label(enum snd_ff_clock_src src);
+
+int snd_ff_create_midi_devices(struct snd_ff *ff);
+
+int snd_ff_create_pcm_devices(struct snd_ff *ff);
+
+int snd_ff_create_hwdep_devices(struct snd_ff *ff);
+
+#endif