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-rw-r--r--sound/firewire/motu/Makefile9
-rw-r--r--sound/firewire/motu/amdtp-motu-trace.h85
-rw-r--r--sound/firewire/motu/amdtp-motu.c489
-rw-r--r--sound/firewire/motu/motu-command-dsp-message-parser.c181
-rw-r--r--sound/firewire/motu/motu-hwdep.c302
-rw-r--r--sound/firewire/motu/motu-midi.c136
-rw-r--r--sound/firewire/motu/motu-pcm.c370
-rw-r--r--sound/firewire/motu/motu-proc.c109
-rw-r--r--sound/firewire/motu/motu-protocol-v1.c467
-rw-r--r--sound/firewire/motu/motu-protocol-v2.c321
-rw-r--r--sound/firewire/motu/motu-protocol-v3.c337
-rw-r--r--sound/firewire/motu/motu-register-dsp-message-parser.c420
-rw-r--r--sound/firewire/motu/motu-stream.c438
-rw-r--r--sound/firewire/motu/motu-transaction.c136
-rw-r--r--sound/firewire/motu/motu.c205
-rw-r--r--sound/firewire/motu/motu.h298
16 files changed, 4303 insertions, 0 deletions
diff --git a/sound/firewire/motu/Makefile b/sound/firewire/motu/Makefile
new file mode 100644
index 000000000..3bef2a0b1
--- /dev/null
+++ b/sound/firewire/motu/Makefile
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0
+CFLAGS_amdtp-motu.o := -I$(src)
+
+snd-firewire-motu-objs := motu.o amdtp-motu.o motu-transaction.o motu-stream.o \
+ motu-proc.o motu-pcm.o motu-midi.o motu-hwdep.o \
+ motu-protocol-v2.o motu-protocol-v3.o \
+ motu-protocol-v1.o motu-register-dsp-message-parser.o \
+ motu-command-dsp-message-parser.o
+obj-$(CONFIG_SND_FIREWIRE_MOTU) += snd-firewire-motu.o
diff --git a/sound/firewire/motu/amdtp-motu-trace.h b/sound/firewire/motu/amdtp-motu-trace.h
new file mode 100644
index 000000000..3d36f125c
--- /dev/null
+++ b/sound/firewire/motu/amdtp-motu-trace.h
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * amdtp-motu-trace.h - tracepoint definitions to dump a part of packet data
+ *
+ * Copyright (c) 2017 Takashi Sakamoto
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM snd_firewire_motu
+
+#if !defined(_SND_FIREWIRE_MOTU_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _SND_FIREWIRE_MOTU_TRACE_H
+
+#include <linux/tracepoint.h>
+
+static void copy_sph(u32 *frame, __be32 *buffer, unsigned int data_blocks,
+ unsigned int data_block_quadlets);
+static void copy_message(u64 *frames, __be32 *buffer, unsigned int data_blocks,
+ unsigned int data_block_quadlets);
+
+TRACE_EVENT(data_block_sph,
+ TP_PROTO(struct amdtp_stream *s, unsigned int data_blocks, __be32 *buffer),
+ TP_ARGS(s, data_blocks, buffer),
+ TP_STRUCT__entry(
+ __field(int, src)
+ __field(int, dst)
+ __field(unsigned int, data_blocks)
+ __dynamic_array(u32, tstamps, data_blocks)
+ ),
+ TP_fast_assign(
+ if (s->direction == AMDTP_IN_STREAM) {
+ __entry->src = fw_parent_device(s->unit)->node_id;
+ __entry->dst = fw_parent_device(s->unit)->card->node_id;
+ } else {
+ __entry->src = fw_parent_device(s->unit)->card->node_id;
+ __entry->dst = fw_parent_device(s->unit)->node_id;
+ }
+ __entry->data_blocks = data_blocks;
+ copy_sph(__get_dynamic_array(tstamps), buffer, data_blocks, s->data_block_quadlets);
+ ),
+ TP_printk(
+ "%04x %04x %u %s",
+ __entry->src,
+ __entry->dst,
+ __entry->data_blocks,
+ __print_array(__get_dynamic_array(tstamps), __entry->data_blocks, 4)
+ )
+);
+
+TRACE_EVENT(data_block_message,
+ TP_PROTO(struct amdtp_stream *s, unsigned int data_blocks, __be32 *buffer),
+ TP_ARGS(s, data_blocks, buffer),
+ TP_STRUCT__entry(
+ __field(int, src)
+ __field(int, dst)
+ __field(unsigned int, data_blocks)
+ __dynamic_array(u64, messages, data_blocks)
+ ),
+ TP_fast_assign(
+ if (s->direction == AMDTP_IN_STREAM) {
+ __entry->src = fw_parent_device(s->unit)->node_id;
+ __entry->dst = fw_parent_device(s->unit)->card->node_id;
+ } else {
+ __entry->src = fw_parent_device(s->unit)->card->node_id;
+ __entry->dst = fw_parent_device(s->unit)->node_id;
+ }
+ __entry->data_blocks = data_blocks;
+ copy_message(__get_dynamic_array(messages), buffer, data_blocks, s->data_block_quadlets);
+ ),
+ TP_printk(
+ "%04x %04x %u %s",
+ __entry->src,
+ __entry->dst,
+ __entry->data_blocks,
+ __print_array(__get_dynamic_array(messages), __entry->data_blocks, 8)
+ )
+);
+
+#endif
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE amdtp-motu-trace
+#include <trace/define_trace.h>
diff --git a/sound/firewire/motu/amdtp-motu.c b/sound/firewire/motu/amdtp-motu.c
new file mode 100644
index 000000000..2fb52f481
--- /dev/null
+++ b/sound/firewire/motu/amdtp-motu.c
@@ -0,0 +1,489 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * amdtp-motu.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+#include <linux/slab.h>
+#include <sound/pcm.h>
+#include "motu.h"
+
+#define CREATE_TRACE_POINTS
+#include "amdtp-motu-trace.h"
+
+#define CIP_FMT_MOTU 0x02
+#define CIP_FMT_MOTU_TX_V3 0x22
+#define MOTU_FDF_AM824 0x22
+
+#define TICKS_PER_CYCLE 3072
+#define CYCLES_PER_SECOND 8000
+#define TICKS_PER_SECOND (TICKS_PER_CYCLE * CYCLES_PER_SECOND)
+
+#define CIP_SPH_CYCLE_SHIFT 12
+#define CIP_SPH_CYCLE_MASK 0x01fff000
+#define CIP_SPH_OFFSET_MASK 0x00000fff
+
+/*
+ * Nominally 3125 bytes/second, but the MIDI port's clock might be
+ * 1% too slow, and the bus clock 100 ppm too fast.
+ */
+#define MIDI_BYTES_PER_SECOND 3093
+
+struct amdtp_motu {
+ unsigned int pcm_chunks;
+ unsigned int pcm_byte_offset;
+
+ struct snd_rawmidi_substream *midi;
+ unsigned int midi_ports;
+ unsigned int midi_flag_offset;
+ unsigned int midi_byte_offset;
+
+ int midi_db_count;
+ unsigned int midi_db_interval;
+
+ struct amdtp_motu_cache *cache;
+};
+
+int amdtp_motu_set_parameters(struct amdtp_stream *s, unsigned int rate,
+ unsigned int midi_ports,
+ struct snd_motu_packet_format *formats)
+{
+ struct amdtp_motu *p = s->protocol;
+ unsigned int pcm_chunks, data_chunks, data_block_quadlets;
+ unsigned int mode;
+ int i, err;
+
+ if (amdtp_stream_running(s))
+ return -EBUSY;
+
+ for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
+ if (snd_motu_clock_rates[i] == rate) {
+ mode = i >> 1;
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(snd_motu_clock_rates))
+ return -EINVAL;
+
+ // Each data block includes SPH in its head. Data chunks follow with
+ // 3 byte alignment. Padding follows with zero to conform to quadlet
+ // alignment.
+ pcm_chunks = formats->pcm_chunks[mode];
+ data_chunks = formats->msg_chunks + pcm_chunks;
+ data_block_quadlets = 1 + DIV_ROUND_UP(data_chunks * 3, 4);
+
+ err = amdtp_stream_set_parameters(s, rate, data_block_quadlets);
+ if (err < 0)
+ return err;
+
+ p->pcm_chunks = pcm_chunks;
+ p->pcm_byte_offset = formats->pcm_byte_offset;
+
+ p->midi_ports = midi_ports;
+ p->midi_flag_offset = formats->midi_flag_offset;
+ p->midi_byte_offset = formats->midi_byte_offset;
+
+ p->midi_db_count = 0;
+ p->midi_db_interval = rate / MIDI_BYTES_PER_SECOND;
+
+ return 0;
+}
+
+static void read_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
+ __be32 *buffer, unsigned int data_blocks,
+ unsigned int pcm_frames)
+{
+ struct amdtp_motu *p = s->protocol;
+ unsigned int channels = p->pcm_chunks;
+ struct snd_pcm_runtime *runtime = pcm->runtime;
+ unsigned int pcm_buffer_pointer;
+ int remaining_frames;
+ u8 *byte;
+ 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 < data_blocks; ++i) {
+ byte = (u8 *)buffer + p->pcm_byte_offset;
+
+ for (c = 0; c < channels; ++c) {
+ *dst = (byte[0] << 24) |
+ (byte[1] << 16) |
+ (byte[2] << 8);
+ byte += 3;
+ dst++;
+ }
+ buffer += s->data_block_quadlets;
+ if (--remaining_frames == 0)
+ dst = (void *)runtime->dma_area;
+ }
+}
+
+static void write_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm,
+ __be32 *buffer, unsigned int data_blocks,
+ unsigned int pcm_frames)
+{
+ struct amdtp_motu *p = s->protocol;
+ unsigned int channels = p->pcm_chunks;
+ struct snd_pcm_runtime *runtime = pcm->runtime;
+ unsigned int pcm_buffer_pointer;
+ int remaining_frames;
+ u8 *byte;
+ 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 < data_blocks; ++i) {
+ byte = (u8 *)buffer + p->pcm_byte_offset;
+
+ for (c = 0; c < channels; ++c) {
+ byte[0] = (*src >> 24) & 0xff;
+ byte[1] = (*src >> 16) & 0xff;
+ byte[2] = (*src >> 8) & 0xff;
+ byte += 3;
+ src++;
+ }
+
+ buffer += s->data_block_quadlets;
+ if (--remaining_frames == 0)
+ src = (void *)runtime->dma_area;
+ }
+}
+
+static void write_pcm_silence(struct amdtp_stream *s, __be32 *buffer,
+ unsigned int data_blocks)
+{
+ struct amdtp_motu *p = s->protocol;
+ unsigned int channels, i, c;
+ u8 *byte;
+
+ channels = p->pcm_chunks;
+
+ for (i = 0; i < data_blocks; ++i) {
+ byte = (u8 *)buffer + p->pcm_byte_offset;
+
+ for (c = 0; c < channels; ++c) {
+ byte[0] = 0;
+ byte[1] = 0;
+ byte[2] = 0;
+ byte += 3;
+ }
+
+ buffer += s->data_block_quadlets;
+ }
+}
+
+int amdtp_motu_add_pcm_hw_constraints(struct amdtp_stream *s,
+ struct snd_pcm_runtime *runtime)
+{
+ int err;
+
+ /* TODO: how to set an constraint for exactly 24bit PCM sample? */
+ err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
+ if (err < 0)
+ return err;
+
+ return amdtp_stream_add_pcm_hw_constraints(s, runtime);
+}
+
+void amdtp_motu_midi_trigger(struct amdtp_stream *s, unsigned int port,
+ struct snd_rawmidi_substream *midi)
+{
+ struct amdtp_motu *p = s->protocol;
+
+ if (port < p->midi_ports)
+ WRITE_ONCE(p->midi, midi);
+}
+
+static void write_midi_messages(struct amdtp_stream *s, __be32 *buffer,
+ unsigned int data_blocks)
+{
+ struct amdtp_motu *p = s->protocol;
+ struct snd_rawmidi_substream *midi = READ_ONCE(p->midi);
+ u8 *b;
+ int i;
+
+ for (i = 0; i < data_blocks; i++) {
+ b = (u8 *)buffer;
+
+ if (midi && p->midi_db_count == 0 &&
+ snd_rawmidi_transmit(midi, b + p->midi_byte_offset, 1) == 1) {
+ b[p->midi_flag_offset] = 0x01;
+ } else {
+ b[p->midi_byte_offset] = 0x00;
+ b[p->midi_flag_offset] = 0x00;
+ }
+
+ buffer += s->data_block_quadlets;
+
+ if (--p->midi_db_count < 0)
+ p->midi_db_count = p->midi_db_interval;
+ }
+}
+
+static void read_midi_messages(struct amdtp_stream *s, __be32 *buffer,
+ unsigned int data_blocks)
+{
+ struct amdtp_motu *p = s->protocol;
+ struct snd_rawmidi_substream *midi;
+ u8 *b;
+ int i;
+
+ for (i = 0; i < data_blocks; i++) {
+ b = (u8 *)buffer;
+ midi = READ_ONCE(p->midi);
+
+ if (midi && (b[p->midi_flag_offset] & 0x01))
+ snd_rawmidi_receive(midi, b + p->midi_byte_offset, 1);
+
+ buffer += s->data_block_quadlets;
+ }
+}
+
+/* For tracepoints. */
+static void __maybe_unused copy_sph(u32 *frames, __be32 *buffer,
+ unsigned int data_blocks,
+ unsigned int data_block_quadlets)
+{
+ unsigned int i;
+
+ for (i = 0; i < data_blocks; ++i) {
+ *frames = be32_to_cpu(*buffer);
+ buffer += data_block_quadlets;
+ frames++;
+ }
+}
+
+/* For tracepoints. */
+static void __maybe_unused copy_message(u64 *frames, __be32 *buffer,
+ unsigned int data_blocks,
+ unsigned int data_block_quadlets)
+{
+ unsigned int i;
+
+ /* This is just for v2/v3 protocol. */
+ for (i = 0; i < data_blocks; ++i) {
+ *frames = be32_to_cpu(buffer[1]);
+ *frames <<= 16;
+ *frames |= be32_to_cpu(buffer[2]) >> 16;
+ ++frames;
+ buffer += data_block_quadlets;
+ }
+}
+
+static void probe_tracepoints_events(struct amdtp_stream *s,
+ const struct pkt_desc *descs,
+ unsigned int packets)
+{
+ int i;
+
+ for (i = 0; i < packets; ++i) {
+ const struct pkt_desc *desc = descs + i;
+ __be32 *buf = desc->ctx_payload;
+ unsigned int data_blocks = desc->data_blocks;
+
+ trace_data_block_sph(s, data_blocks, buf);
+ trace_data_block_message(s, data_blocks, buf);
+ }
+}
+
+static void cache_event_offsets(struct amdtp_motu_cache *cache, const __be32 *buf,
+ unsigned int data_blocks, unsigned int data_block_quadlets)
+{
+ unsigned int *event_offsets = cache->event_offsets;
+ const unsigned int cache_size = cache->size;
+ unsigned int cache_tail = cache->tail;
+ unsigned int base_tick = cache->tx_cycle_count * TICKS_PER_CYCLE;
+ int i;
+
+ for (i = 0; i < data_blocks; ++i) {
+ u32 sph = be32_to_cpu(*buf);
+ unsigned int tick;
+
+ tick = ((sph & CIP_SPH_CYCLE_MASK) >> CIP_SPH_CYCLE_SHIFT) * TICKS_PER_CYCLE +
+ (sph & CIP_SPH_OFFSET_MASK);
+
+ if (tick < base_tick)
+ tick += TICKS_PER_SECOND;
+ event_offsets[cache_tail] = tick - base_tick;
+
+ cache_tail = (cache_tail + 1) % cache_size;
+ buf += data_block_quadlets;
+ }
+
+ cache->tail = cache_tail;
+ cache->tx_cycle_count = (cache->tx_cycle_count + 1) % CYCLES_PER_SECOND;
+}
+
+static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
+ const struct pkt_desc *descs,
+ unsigned int packets,
+ struct snd_pcm_substream *pcm)
+{
+ struct snd_motu *motu = container_of(s, struct snd_motu, tx_stream);
+ struct amdtp_motu *p = s->protocol;
+ unsigned int pcm_frames = 0;
+ int i;
+
+ if (p->cache->tx_cycle_count == UINT_MAX)
+ p->cache->tx_cycle_count = (s->domain->processing_cycle.tx_start % CYCLES_PER_SECOND);
+
+ // For data block processing.
+ for (i = 0; i < packets; ++i) {
+ const struct pkt_desc *desc = descs + i;
+ __be32 *buf = desc->ctx_payload;
+ unsigned int data_blocks = desc->data_blocks;
+
+ cache_event_offsets(p->cache, buf, data_blocks, s->data_block_quadlets);
+
+ if (pcm) {
+ read_pcm_s32(s, pcm, buf, data_blocks, pcm_frames);
+ pcm_frames += data_blocks;
+ }
+
+ if (p->midi_ports)
+ read_midi_messages(s, buf, data_blocks);
+ }
+
+ if (motu->spec->flags & SND_MOTU_SPEC_REGISTER_DSP) {
+ snd_motu_register_dsp_message_parser_parse(motu, descs, packets,
+ s->data_block_quadlets);
+ } else if (motu->spec->flags & SND_MOTU_SPEC_COMMAND_DSP) {
+ snd_motu_command_dsp_message_parser_parse(motu, descs, packets,
+ s->data_block_quadlets);
+ }
+
+ // For tracepoints.
+ if (trace_data_block_sph_enabled() ||
+ trace_data_block_message_enabled())
+ probe_tracepoints_events(s, descs, packets);
+
+ return pcm_frames;
+}
+
+static void write_sph(struct amdtp_motu_cache *cache, __be32 *buffer, unsigned int data_blocks,
+ unsigned int data_block_quadlets)
+{
+ unsigned int *event_offsets = cache->event_offsets;
+ const unsigned int cache_size = cache->size;
+ unsigned int cache_head = cache->head;
+ unsigned int base_tick = cache->rx_cycle_count * TICKS_PER_CYCLE;
+ int i;
+
+ for (i = 0; i < data_blocks; i++) {
+ unsigned int tick = (base_tick + event_offsets[cache_head]) % TICKS_PER_SECOND;
+ u32 sph = ((tick / TICKS_PER_CYCLE) << CIP_SPH_CYCLE_SHIFT) | (tick % TICKS_PER_CYCLE);
+ *buffer = cpu_to_be32(sph);
+
+ cache_head = (cache_head + 1) % cache_size;
+ buffer += data_block_quadlets;
+ }
+
+ cache->head = cache_head;
+ cache->rx_cycle_count = (cache->rx_cycle_count + 1) % CYCLES_PER_SECOND;
+}
+
+static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
+ const struct pkt_desc *descs,
+ unsigned int packets,
+ struct snd_pcm_substream *pcm)
+{
+ struct amdtp_motu *p = s->protocol;
+ unsigned int pcm_frames = 0;
+ int i;
+
+ if (p->cache->rx_cycle_count == UINT_MAX)
+ p->cache->rx_cycle_count = (s->domain->processing_cycle.rx_start % CYCLES_PER_SECOND);
+
+ // For data block processing.
+ for (i = 0; i < packets; ++i) {
+ const struct pkt_desc *desc = descs + i;
+ __be32 *buf = 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);
+ }
+
+ if (p->midi_ports)
+ write_midi_messages(s, buf, data_blocks);
+
+ write_sph(p->cache, buf, data_blocks, s->data_block_quadlets);
+ }
+
+ // For tracepoints.
+ if (trace_data_block_sph_enabled() ||
+ trace_data_block_message_enabled())
+ probe_tracepoints_events(s, descs, packets);
+
+ return pcm_frames;
+}
+
+int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
+ enum amdtp_stream_direction dir,
+ const struct snd_motu_spec *spec, struct amdtp_motu_cache *cache)
+{
+ amdtp_stream_process_ctx_payloads_t process_ctx_payloads;
+ int fmt = CIP_FMT_MOTU;
+ unsigned int flags = CIP_BLOCKING | CIP_UNAWARE_SYT;
+ struct amdtp_motu *p;
+ int err;
+
+ if (dir == AMDTP_IN_STREAM) {
+ process_ctx_payloads = process_ir_ctx_payloads;
+
+ /*
+ * Units of version 3 transmits packets with invalid CIP header
+ * against IEC 61883-1.
+ */
+ if (spec->protocol_version == SND_MOTU_PROTOCOL_V3) {
+ flags |= CIP_WRONG_DBS |
+ CIP_SKIP_DBC_ZERO_CHECK |
+ CIP_HEADER_WITHOUT_EOH;
+ fmt = CIP_FMT_MOTU_TX_V3;
+ }
+
+ if (spec == &snd_motu_spec_8pre ||
+ spec == &snd_motu_spec_ultralite) {
+ // 8pre has some quirks.
+ flags |= CIP_WRONG_DBS |
+ CIP_SKIP_DBC_ZERO_CHECK;
+ }
+ } else {
+ process_ctx_payloads = process_it_ctx_payloads;
+ flags |= CIP_DBC_IS_END_EVENT;
+ }
+
+ err = amdtp_stream_init(s, unit, dir, flags, fmt, process_ctx_payloads,
+ sizeof(struct amdtp_motu));
+ if (err < 0)
+ return err;
+
+ s->sph = 1;
+
+ if (dir == AMDTP_OUT_STREAM) {
+ // Use fixed value for FDF field.
+ s->ctx_data.rx.fdf = MOTU_FDF_AM824;
+ }
+
+ p = s->protocol;
+ p->cache = cache;
+
+ return 0;
+}
diff --git a/sound/firewire/motu/motu-command-dsp-message-parser.c b/sound/firewire/motu/motu-command-dsp-message-parser.c
new file mode 100644
index 000000000..9efe4d364
--- /dev/null
+++ b/sound/firewire/motu/motu-command-dsp-message-parser.c
@@ -0,0 +1,181 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// motu-command-dsp-message-parser.c - a part of driver for MOTU FireWire series
+//
+// Copyright (c) 2021 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+
+// Below models allow software to configure their DSP function by command transferred in
+// asynchronous transaction:
+// * 828 mk3 (FireWire only and Hybrid)
+// * 896 mk3 (FireWire only and Hybrid)
+// * Ultralite mk3 (FireWire only and Hybrid)
+// * Traveler mk3
+// * Track 16
+//
+// Isochronous packets from the above models includes messages to report state of hardware meter.
+
+#include "motu.h"
+
+enum msg_parser_state {
+ INITIALIZED,
+ FRAGMENT_DETECTED,
+ AVAILABLE,
+};
+
+struct msg_parser {
+ spinlock_t lock;
+ enum msg_parser_state state;
+ unsigned int interval;
+ unsigned int message_count;
+ unsigned int fragment_pos;
+ unsigned int value_index;
+ u64 value;
+ struct snd_firewire_motu_command_dsp_meter meter;
+};
+
+int snd_motu_command_dsp_message_parser_new(struct snd_motu *motu)
+{
+ struct msg_parser *parser;
+
+ parser = devm_kzalloc(&motu->card->card_dev, sizeof(*parser), GFP_KERNEL);
+ if (!parser)
+ return -ENOMEM;
+ spin_lock_init(&parser->lock);
+ motu->message_parser = parser;
+
+ return 0;
+}
+
+int snd_motu_command_dsp_message_parser_init(struct snd_motu *motu, enum cip_sfc sfc)
+{
+ struct msg_parser *parser = motu->message_parser;
+
+ parser->state = INITIALIZED;
+
+ // All of data blocks don't have messages with meaningful information.
+ switch (sfc) {
+ case CIP_SFC_176400:
+ case CIP_SFC_192000:
+ parser->interval = 4;
+ break;
+ case CIP_SFC_88200:
+ case CIP_SFC_96000:
+ parser->interval = 2;
+ break;
+ case CIP_SFC_32000:
+ case CIP_SFC_44100:
+ case CIP_SFC_48000:
+ default:
+ parser->interval = 1;
+ break;
+ }
+
+ return 0;
+}
+
+#define FRAGMENT_POS 6
+#define MIDI_BYTE_POS 7
+#define MIDI_FLAG_POS 8
+// One value of hardware meter consists of 4 messages.
+#define FRAGMENTS_PER_VALUE 4
+#define VALUES_AT_IMAGE_END 0xffffffffffffffff
+
+void snd_motu_command_dsp_message_parser_parse(struct snd_motu *motu, const struct pkt_desc *descs,
+ unsigned int desc_count, unsigned int data_block_quadlets)
+{
+ struct msg_parser *parser = motu->message_parser;
+ unsigned int interval = parser->interval;
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&parser->lock, flags);
+
+ for (i = 0; i < desc_count; ++i) {
+ const struct pkt_desc *desc = descs + i;
+ __be32 *buffer = desc->ctx_payload;
+ unsigned int data_blocks = desc->data_blocks;
+ int j;
+
+ for (j = 0; j < data_blocks; ++j) {
+ u8 *b = (u8 *)buffer;
+ buffer += data_block_quadlets;
+
+ switch (parser->state) {
+ case INITIALIZED:
+ {
+ u8 fragment = b[FRAGMENT_POS];
+
+ if (fragment > 0) {
+ parser->value = fragment;
+ parser->message_count = 1;
+ parser->state = FRAGMENT_DETECTED;
+ }
+ break;
+ }
+ case FRAGMENT_DETECTED:
+ {
+ if (parser->message_count % interval == 0) {
+ u8 fragment = b[FRAGMENT_POS];
+
+ parser->value >>= 8;
+ parser->value |= (u64)fragment << 56;
+
+ if (parser->value == VALUES_AT_IMAGE_END) {
+ parser->state = AVAILABLE;
+ parser->fragment_pos = 0;
+ parser->value_index = 0;
+ parser->message_count = 0;
+ }
+ }
+ ++parser->message_count;
+ break;
+ }
+ case AVAILABLE:
+ default:
+ {
+ if (parser->message_count % interval == 0) {
+ u8 fragment = b[FRAGMENT_POS];
+
+ parser->value >>= 8;
+ parser->value |= (u64)fragment << 56;
+ ++parser->fragment_pos;
+
+ if (parser->fragment_pos == 4) {
+ // Skip the last two quadlets since they could be
+ // invalid value (0xffffffff) as floating point
+ // number.
+ if (parser->value_index <
+ SNDRV_FIREWIRE_MOTU_COMMAND_DSP_METER_COUNT - 2) {
+ u32 val = (u32)(parser->value >> 32);
+ parser->meter.data[parser->value_index] = val;
+ }
+ ++parser->value_index;
+ parser->fragment_pos = 0;
+ }
+
+ if (parser->value == VALUES_AT_IMAGE_END) {
+ parser->value_index = 0;
+ parser->fragment_pos = 0;
+ parser->message_count = 0;
+ }
+ }
+ ++parser->message_count;
+ break;
+ }
+ }
+ }
+ }
+
+ spin_unlock_irqrestore(&parser->lock, flags);
+}
+
+void snd_motu_command_dsp_message_parser_copy_meter(struct snd_motu *motu,
+ struct snd_firewire_motu_command_dsp_meter *meter)
+{
+ struct msg_parser *parser = motu->message_parser;
+ unsigned long flags;
+
+ spin_lock_irqsave(&parser->lock, flags);
+ memcpy(meter, &parser->meter, sizeof(*meter));
+ spin_unlock_irqrestore(&parser->lock, flags);
+}
diff --git a/sound/firewire/motu/motu-hwdep.c b/sound/firewire/motu/motu-hwdep.c
new file mode 100644
index 000000000..88d1f4b56
--- /dev/null
+++ b/sound/firewire/motu/motu-hwdep.c
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * motu-hwdep.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+/*
+ * This codes have five functionalities.
+ *
+ * 1.get information about firewire node
+ * 2.get notification about starting/stopping stream
+ * 3.lock/unlock streaming
+ *
+ */
+
+#include "motu.h"
+
+static bool has_dsp_event(struct snd_motu *motu)
+{
+ if (motu->spec->flags & SND_MOTU_SPEC_REGISTER_DSP)
+ return (snd_motu_register_dsp_message_parser_count_event(motu) > 0);
+ else
+ return false;
+}
+
+static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
+ loff_t *offset)
+{
+ struct snd_motu *motu = hwdep->private_data;
+ DEFINE_WAIT(wait);
+ union snd_firewire_event event;
+
+ spin_lock_irq(&motu->lock);
+
+ while (!motu->dev_lock_changed && motu->msg == 0 && !has_dsp_event(motu)) {
+ prepare_to_wait(&motu->hwdep_wait, &wait, TASK_INTERRUPTIBLE);
+ spin_unlock_irq(&motu->lock);
+ schedule();
+ finish_wait(&motu->hwdep_wait, &wait);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ spin_lock_irq(&motu->lock);
+ }
+
+ memset(&event, 0, sizeof(event));
+ if (motu->dev_lock_changed) {
+ event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS;
+ event.lock_status.status = (motu->dev_lock_count > 0);
+ motu->dev_lock_changed = false;
+ spin_unlock_irq(&motu->lock);
+
+ count = min_t(long, count, sizeof(event));
+ if (copy_to_user(buf, &event, count))
+ return -EFAULT;
+ } else if (motu->msg > 0) {
+ event.motu_notification.type = SNDRV_FIREWIRE_EVENT_MOTU_NOTIFICATION;
+ event.motu_notification.message = motu->msg;
+ motu->msg = 0;
+ spin_unlock_irq(&motu->lock);
+
+ count = min_t(long, count, sizeof(event));
+ if (copy_to_user(buf, &event, count))
+ return -EFAULT;
+ } else if (has_dsp_event(motu)) {
+ size_t consumed = 0;
+ u32 __user *ptr;
+ u32 ev;
+
+ spin_unlock_irq(&motu->lock);
+
+ // Header is filled later.
+ consumed += sizeof(event.motu_register_dsp_change);
+
+ while (consumed < count &&
+ snd_motu_register_dsp_message_parser_copy_event(motu, &ev)) {
+ ptr = (u32 __user *)(buf + consumed);
+ if (put_user(ev, ptr))
+ return -EFAULT;
+ consumed += sizeof(ev);
+ }
+
+ event.motu_register_dsp_change.type = SNDRV_FIREWIRE_EVENT_MOTU_REGISTER_DSP_CHANGE;
+ event.motu_register_dsp_change.count =
+ (consumed - sizeof(event.motu_register_dsp_change)) / 4;
+ if (copy_to_user(buf, &event, sizeof(event.motu_register_dsp_change)))
+ return -EFAULT;
+
+ count = consumed;
+ } else {
+ spin_unlock_irq(&motu->lock);
+
+ count = 0;
+ }
+
+ return count;
+}
+
+static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
+ poll_table *wait)
+{
+ struct snd_motu *motu = hwdep->private_data;
+ __poll_t events;
+
+ poll_wait(file, &motu->hwdep_wait, wait);
+
+ spin_lock_irq(&motu->lock);
+ if (motu->dev_lock_changed || motu->msg || has_dsp_event(motu))
+ events = EPOLLIN | EPOLLRDNORM;
+ else
+ events = 0;
+ spin_unlock_irq(&motu->lock);
+
+ return events | EPOLLOUT;
+}
+
+static int hwdep_get_info(struct snd_motu *motu, void __user *arg)
+{
+ struct fw_device *dev = fw_parent_device(motu->unit);
+ struct snd_firewire_get_info info;
+
+ memset(&info, 0, sizeof(info));
+ info.type = SNDRV_FIREWIRE_TYPE_MOTU;
+ 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_motu *motu)
+{
+ int err;
+
+ spin_lock_irq(&motu->lock);
+
+ if (motu->dev_lock_count == 0) {
+ motu->dev_lock_count = -1;
+ err = 0;
+ } else {
+ err = -EBUSY;
+ }
+
+ spin_unlock_irq(&motu->lock);
+
+ return err;
+}
+
+static int hwdep_unlock(struct snd_motu *motu)
+{
+ int err;
+
+ spin_lock_irq(&motu->lock);
+
+ if (motu->dev_lock_count == -1) {
+ motu->dev_lock_count = 0;
+ err = 0;
+ } else {
+ err = -EBADFD;
+ }
+
+ spin_unlock_irq(&motu->lock);
+
+ return err;
+}
+
+static int hwdep_release(struct snd_hwdep *hwdep, struct file *file)
+{
+ struct snd_motu *motu = hwdep->private_data;
+
+ spin_lock_irq(&motu->lock);
+ if (motu->dev_lock_count == -1)
+ motu->dev_lock_count = 0;
+ spin_unlock_irq(&motu->lock);
+
+ return 0;
+}
+
+static int hwdep_ioctl(struct snd_hwdep *hwdep, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct snd_motu *motu = hwdep->private_data;
+
+ switch (cmd) {
+ case SNDRV_FIREWIRE_IOCTL_GET_INFO:
+ return hwdep_get_info(motu, (void __user *)arg);
+ case SNDRV_FIREWIRE_IOCTL_LOCK:
+ return hwdep_lock(motu);
+ case SNDRV_FIREWIRE_IOCTL_UNLOCK:
+ return hwdep_unlock(motu);
+ case SNDRV_FIREWIRE_IOCTL_MOTU_REGISTER_DSP_METER:
+ {
+ struct snd_firewire_motu_register_dsp_meter *meter;
+ int err;
+
+ if (!(motu->spec->flags & SND_MOTU_SPEC_REGISTER_DSP))
+ return -ENXIO;
+
+ meter = kzalloc(sizeof(*meter), GFP_KERNEL);
+ if (!meter)
+ return -ENOMEM;
+
+ snd_motu_register_dsp_message_parser_copy_meter(motu, meter);
+
+ err = copy_to_user((void __user *)arg, meter, sizeof(*meter));
+ kfree(meter);
+
+ if (err)
+ return -EFAULT;
+
+ return 0;
+ }
+ case SNDRV_FIREWIRE_IOCTL_MOTU_COMMAND_DSP_METER:
+ {
+ struct snd_firewire_motu_command_dsp_meter *meter;
+ int err;
+
+ if (!(motu->spec->flags & SND_MOTU_SPEC_COMMAND_DSP))
+ return -ENXIO;
+
+ meter = kzalloc(sizeof(*meter), GFP_KERNEL);
+ if (!meter)
+ return -ENOMEM;
+
+ snd_motu_command_dsp_message_parser_copy_meter(motu, meter);
+
+ err = copy_to_user((void __user *)arg, meter, sizeof(*meter));
+ kfree(meter);
+
+ if (err)
+ return -EFAULT;
+
+ return 0;
+ }
+ case SNDRV_FIREWIRE_IOCTL_MOTU_REGISTER_DSP_PARAMETER:
+ {
+ struct snd_firewire_motu_register_dsp_parameter *param;
+ int err;
+
+ if (!(motu->spec->flags & SND_MOTU_SPEC_REGISTER_DSP))
+ return -ENXIO;
+
+ param = kzalloc(sizeof(*param), GFP_KERNEL);
+ if (!param)
+ return -ENOMEM;
+
+ snd_motu_register_dsp_message_parser_copy_parameter(motu, param);
+
+ err = copy_to_user((void __user *)arg, param, sizeof(*param));
+ kfree(param);
+ if (err)
+ return -EFAULT;
+
+ return 0;
+ }
+ 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_motu_create_hwdep_device(struct snd_motu *motu)
+{
+ static const struct snd_hwdep_ops 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(motu->card, motu->card->driver, 0, &hwdep);
+ if (err < 0)
+ return err;
+
+ strcpy(hwdep->name, "MOTU");
+ hwdep->iface = SNDRV_HWDEP_IFACE_FW_MOTU;
+ hwdep->ops = ops;
+ hwdep->private_data = motu;
+ hwdep->exclusive = true;
+
+ motu->hwdep = hwdep;
+
+ return 0;
+}
diff --git a/sound/firewire/motu/motu-midi.c b/sound/firewire/motu/motu-midi.c
new file mode 100644
index 000000000..2365f7dfd
--- /dev/null
+++ b/sound/firewire/motu/motu-midi.c
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * motu-midi.h - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+#include "motu.h"
+
+static int midi_open(struct snd_rawmidi_substream *substream)
+{
+ struct snd_motu *motu = substream->rmidi->private_data;
+ int err;
+
+ err = snd_motu_stream_lock_try(motu);
+ if (err < 0)
+ return err;
+
+ mutex_lock(&motu->mutex);
+
+ err = snd_motu_stream_reserve_duplex(motu, 0, 0, 0);
+ if (err >= 0) {
+ ++motu->substreams_counter;
+ err = snd_motu_stream_start_duplex(motu);
+ if (err < 0)
+ --motu->substreams_counter;
+ }
+
+ mutex_unlock(&motu->mutex);
+
+ if (err < 0)
+ snd_motu_stream_lock_release(motu);
+
+ return err;
+}
+
+static int midi_close(struct snd_rawmidi_substream *substream)
+{
+ struct snd_motu *motu = substream->rmidi->private_data;
+
+ mutex_lock(&motu->mutex);
+
+ --motu->substreams_counter;
+ snd_motu_stream_stop_duplex(motu);
+
+ mutex_unlock(&motu->mutex);
+
+ snd_motu_stream_lock_release(motu);
+ return 0;
+}
+
+static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
+{
+ struct snd_motu *motu = substrm->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&motu->lock, flags);
+
+ if (up)
+ amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
+ substrm);
+ else
+ amdtp_motu_midi_trigger(&motu->tx_stream, substrm->number,
+ NULL);
+
+ spin_unlock_irqrestore(&motu->lock, flags);
+}
+
+static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
+{
+ struct snd_motu *motu = substrm->rmidi->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&motu->lock, flags);
+
+ if (up)
+ amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
+ substrm);
+ else
+ amdtp_motu_midi_trigger(&motu->rx_stream, substrm->number,
+ NULL);
+
+ spin_unlock_irqrestore(&motu->lock, flags);
+}
+
+static void set_midi_substream_names(struct snd_motu *motu,
+ struct snd_rawmidi_str *str)
+{
+ struct snd_rawmidi_substream *subs;
+
+ list_for_each_entry(subs, &str->substreams, list) {
+ snprintf(subs->name, sizeof(subs->name),
+ "%s MIDI %d", motu->card->shortname, subs->number + 1);
+ }
+}
+
+int snd_motu_create_midi_devices(struct snd_motu *motu)
+{
+ static const struct snd_rawmidi_ops capture_ops = {
+ .open = midi_open,
+ .close = midi_close,
+ .trigger = midi_capture_trigger,
+ };
+ static const struct snd_rawmidi_ops playback_ops = {
+ .open = midi_open,
+ .close = midi_close,
+ .trigger = midi_playback_trigger,
+ };
+ struct snd_rawmidi *rmidi;
+ struct snd_rawmidi_str *str;
+ int err;
+
+ /* create midi ports */
+ err = snd_rawmidi_new(motu->card, motu->card->driver, 0, 1, 1, &rmidi);
+ if (err < 0)
+ return err;
+
+ snprintf(rmidi->name, sizeof(rmidi->name),
+ "%s MIDI", motu->card->shortname);
+ rmidi->private_data = motu;
+
+ rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT |
+ SNDRV_RAWMIDI_INFO_OUTPUT |
+ SNDRV_RAWMIDI_INFO_DUPLEX;
+
+ snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
+ &capture_ops);
+ str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
+ set_midi_substream_names(motu, str);
+
+ snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
+ &playback_ops);
+ str = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
+ set_midi_substream_names(motu, str);
+
+ return 0;
+}
diff --git a/sound/firewire/motu/motu-pcm.c b/sound/firewire/motu/motu-pcm.c
new file mode 100644
index 000000000..d410c2efb
--- /dev/null
+++ b/sound/firewire/motu/motu-pcm.c
@@ -0,0 +1,370 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * motu-pcm.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+#include <sound/pcm_params.h>
+#include "motu.h"
+
+static int motu_rate_constraint(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_motu_packet_format *formats = rule->private;
+
+ const struct snd_interval *c =
+ hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+ struct snd_interval *r =
+ hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+ struct snd_interval rates = {
+ .min = UINT_MAX, .max = 0, .integer = 1
+ };
+ unsigned int i, pcm_channels, rate, mode;
+
+ for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
+ rate = snd_motu_clock_rates[i];
+ mode = i / 2;
+
+ pcm_channels = formats->pcm_chunks[mode];
+ if (!snd_interval_test(c, pcm_channels))
+ continue;
+
+ rates.min = min(rates.min, rate);
+ rates.max = max(rates.max, rate);
+ }
+
+ return snd_interval_refine(r, &rates);
+}
+
+static int motu_channels_constraint(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ struct snd_motu_packet_format *formats = rule->private;
+
+ const struct snd_interval *r =
+ hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
+ struct snd_interval *c =
+ hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+ struct snd_interval channels = {
+ .min = UINT_MAX, .max = 0, .integer = 1
+ };
+ unsigned int i, pcm_channels, rate, mode;
+
+ for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
+ rate = snd_motu_clock_rates[i];
+ mode = i / 2;
+
+ if (!snd_interval_test(r, rate))
+ continue;
+
+ pcm_channels = formats->pcm_chunks[mode];
+ channels.min = min(channels.min, pcm_channels);
+ channels.max = max(channels.max, pcm_channels);
+ }
+
+ return snd_interval_refine(c, &channels);
+}
+
+static void limit_channels_and_rates(struct snd_motu *motu,
+ struct snd_pcm_runtime *runtime,
+ struct snd_motu_packet_format *formats)
+{
+ struct snd_pcm_hardware *hw = &runtime->hw;
+ unsigned int i, pcm_channels, rate, mode;
+
+ hw->channels_min = UINT_MAX;
+ hw->channels_max = 0;
+
+ for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
+ rate = snd_motu_clock_rates[i];
+ mode = i / 2;
+
+ pcm_channels = formats->pcm_chunks[mode];
+ if (pcm_channels == 0)
+ continue;
+
+ hw->rates |= snd_pcm_rate_to_rate_bit(rate);
+ hw->channels_min = min(hw->channels_min, pcm_channels);
+ hw->channels_max = max(hw->channels_max, pcm_channels);
+ }
+
+ snd_pcm_limit_hw_rates(runtime);
+}
+
+static int init_hw_info(struct snd_motu *motu,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_pcm_hardware *hw = &runtime->hw;
+ struct amdtp_stream *stream;
+ struct snd_motu_packet_format *formats;
+ int err;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ hw->formats = SNDRV_PCM_FMTBIT_S32;
+ stream = &motu->tx_stream;
+ formats = &motu->tx_packet_formats;
+ } else {
+ hw->formats = SNDRV_PCM_FMTBIT_S32;
+ stream = &motu->rx_stream;
+ formats = &motu->rx_packet_formats;
+ }
+
+ limit_channels_and_rates(motu, runtime, formats);
+
+ err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ motu_rate_constraint, formats,
+ SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+ if (err < 0)
+ return err;
+ err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ motu_channels_constraint, formats,
+ SNDRV_PCM_HW_PARAM_RATE, -1);
+ if (err < 0)
+ return err;
+
+ return amdtp_motu_add_pcm_hw_constraints(stream, runtime);
+}
+
+static int pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_motu *motu = substream->private_data;
+ struct amdtp_domain *d = &motu->domain;
+ enum snd_motu_clock_source src;
+ int err;
+
+ err = snd_motu_stream_lock_try(motu);
+ if (err < 0)
+ return err;
+
+ mutex_lock(&motu->mutex);
+
+ err = snd_motu_stream_cache_packet_formats(motu);
+ if (err < 0)
+ goto err_locked;
+
+ err = init_hw_info(motu, substream);
+ if (err < 0)
+ goto err_locked;
+
+ err = snd_motu_protocol_get_clock_source(motu, &src);
+ if (err < 0)
+ goto err_locked;
+
+ // 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_MOTU_CLOCK_SOURCE_INTERNAL &&
+ src != SND_MOTU_CLOCK_SOURCE_SPH) ||
+ (motu->substreams_counter > 0 && d->events_per_period > 0)) {
+ unsigned int frames_per_period = d->events_per_period;
+ unsigned int frames_per_buffer = d->events_per_buffer;
+ unsigned int rate;
+
+ err = snd_motu_protocol_get_clock_rate(motu, &rate);
+ if (err < 0)
+ goto err_locked;
+
+ substream->runtime->hw.rate_min = rate;
+ substream->runtime->hw.rate_max = rate;
+
+ if (frames_per_period > 0) {
+ err = snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+ frames_per_period, frames_per_period);
+ if (err < 0)
+ goto err_locked;
+
+ err = snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
+ frames_per_buffer, frames_per_buffer);
+ if (err < 0)
+ goto err_locked;
+ }
+ }
+
+ snd_pcm_set_sync(substream);
+
+ mutex_unlock(&motu->mutex);
+
+ return 0;
+err_locked:
+ mutex_unlock(&motu->mutex);
+ snd_motu_stream_lock_release(motu);
+ return err;
+}
+
+static int pcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_motu *motu = substream->private_data;
+
+ snd_motu_stream_lock_release(motu);
+
+ return 0;
+}
+
+static int pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_motu *motu = 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(&motu->mutex);
+ err = snd_motu_stream_reserve_duplex(motu, rate,
+ frames_per_period, frames_per_buffer);
+ if (err >= 0)
+ ++motu->substreams_counter;
+ mutex_unlock(&motu->mutex);
+ }
+
+ return err;
+}
+
+static int pcm_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_motu *motu = substream->private_data;
+
+ mutex_lock(&motu->mutex);
+
+ if (substream->runtime->state != SNDRV_PCM_STATE_OPEN)
+ --motu->substreams_counter;
+
+ snd_motu_stream_stop_duplex(motu);
+
+ mutex_unlock(&motu->mutex);
+
+ return 0;
+}
+
+static int capture_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_motu *motu = substream->private_data;
+ int err;
+
+ mutex_lock(&motu->mutex);
+ err = snd_motu_stream_start_duplex(motu);
+ mutex_unlock(&motu->mutex);
+ if (err >= 0)
+ amdtp_stream_pcm_prepare(&motu->tx_stream);
+
+ return 0;
+}
+static int playback_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_motu *motu = substream->private_data;
+ int err;
+
+ mutex_lock(&motu->mutex);
+ err = snd_motu_stream_start_duplex(motu);
+ mutex_unlock(&motu->mutex);
+ if (err >= 0)
+ amdtp_stream_pcm_prepare(&motu->rx_stream);
+
+ return err;
+}
+
+static int capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_motu *motu = substream->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ amdtp_stream_pcm_trigger(&motu->tx_stream, substream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ amdtp_stream_pcm_trigger(&motu->tx_stream, NULL);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+static int playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_motu *motu = substream->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ amdtp_stream_pcm_trigger(&motu->rx_stream, substream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ amdtp_stream_pcm_trigger(&motu->rx_stream, NULL);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static snd_pcm_uframes_t capture_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_motu *motu = substream->private_data;
+
+ return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->tx_stream);
+}
+static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_motu *motu = substream->private_data;
+
+ return amdtp_domain_stream_pcm_pointer(&motu->domain, &motu->rx_stream);
+}
+
+static int capture_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_motu *motu = substream->private_data;
+
+ return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->tx_stream);
+}
+
+static int playback_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_motu *motu = substream->private_data;
+
+ return amdtp_domain_stream_pcm_ack(&motu->domain, &motu->rx_stream);
+}
+
+int snd_motu_create_pcm_devices(struct snd_motu *motu)
+{
+ static const struct snd_pcm_ops capture_ops = {
+ .open = pcm_open,
+ .close = pcm_close,
+ .hw_params = pcm_hw_params,
+ .hw_free = pcm_hw_free,
+ .prepare = capture_prepare,
+ .trigger = capture_trigger,
+ .pointer = capture_pointer,
+ .ack = capture_ack,
+ };
+ static const struct snd_pcm_ops playback_ops = {
+ .open = pcm_open,
+ .close = pcm_close,
+ .hw_params = pcm_hw_params,
+ .hw_free = pcm_hw_free,
+ .prepare = playback_prepare,
+ .trigger = playback_trigger,
+ .pointer = playback_pointer,
+ .ack = playback_ack,
+ };
+ struct snd_pcm *pcm;
+ int err;
+
+ err = snd_pcm_new(motu->card, motu->card->driver, 0, 1, 1, &pcm);
+ if (err < 0)
+ return err;
+ pcm->private_data = motu;
+ strcpy(pcm->name, motu->card->shortname);
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
+ snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
+
+ return 0;
+}
diff --git a/sound/firewire/motu/motu-proc.c b/sound/firewire/motu/motu-proc.c
new file mode 100644
index 000000000..f009cf7aa
--- /dev/null
+++ b/sound/firewire/motu/motu-proc.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * motu-proc.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+#include "./motu.h"
+
+static const char *const clock_names[] = {
+ [SND_MOTU_CLOCK_SOURCE_INTERNAL] = "Internal",
+ [SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB] = "ADAT on Dsub-9pin interface",
+ [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT] = "ADAT on optical interface",
+ [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A] = "ADAT on optical interface A",
+ [SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B] = "ADAT on optical interface B",
+ [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT] = "S/PDIF on optical interface",
+ [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A] = "S/PDIF on optical interface A",
+ [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B] = "S/PDIF on optical interface B",
+ [SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX] = "S/PDIF on coaxial interface",
+ [SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR] = "AESEBU on XLR interface",
+ [SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC] = "Word clock on BNC interface",
+ [SND_MOTU_CLOCK_SOURCE_SPH] = "Source packet header",
+ [SND_MOTU_CLOCK_SOURCE_UNKNOWN] = "Unknown",
+};
+
+static void proc_read_clock(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+
+ struct snd_motu *motu = entry->private_data;
+ unsigned int rate;
+ enum snd_motu_clock_source source;
+
+ if (snd_motu_protocol_get_clock_rate(motu, &rate) < 0)
+ return;
+ if (snd_motu_protocol_get_clock_source(motu, &source) < 0)
+ return;
+
+ snd_iprintf(buffer, "Rate:\t%d\n", rate);
+ snd_iprintf(buffer, "Source:\t%s\n", clock_names[source]);
+}
+
+static void proc_read_format(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct snd_motu *motu = entry->private_data;
+ unsigned int mode;
+ struct snd_motu_packet_format *formats;
+ int i;
+
+ if (snd_motu_protocol_cache_packet_formats(motu) < 0)
+ return;
+
+ snd_iprintf(buffer, "tx:\tmsg\tfixed\ttotal\n");
+ for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
+ mode = i >> 1;
+
+ formats = &motu->tx_packet_formats;
+ snd_iprintf(buffer,
+ "%u:\t%u\t%u\t%u\n",
+ snd_motu_clock_rates[i],
+ formats->msg_chunks,
+ motu->spec->tx_fixed_pcm_chunks[mode],
+ formats->pcm_chunks[mode]);
+ }
+
+ snd_iprintf(buffer, "rx:\tmsg\tfixed\ttotal\n");
+ for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
+ mode = i >> 1;
+
+ formats = &motu->rx_packet_formats;
+ snd_iprintf(buffer,
+ "%u:\t%u\t%u\t%u\n",
+ snd_motu_clock_rates[i],
+ formats->msg_chunks,
+ motu->spec->rx_fixed_pcm_chunks[mode],
+ formats->pcm_chunks[mode]);
+ }
+}
+
+static void add_node(struct snd_motu *motu, 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(motu->card, name, root);
+ if (entry)
+ snd_info_set_text_ops(entry, motu, op);
+}
+
+void snd_motu_proc_init(struct snd_motu *motu)
+{
+ 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(motu->card, "firewire",
+ motu->card->proc_root);
+ if (root == NULL)
+ return;
+ root->mode = S_IFDIR | 0555;
+
+ add_node(motu, root, "clock", proc_read_clock);
+ add_node(motu, root, "format", proc_read_format);
+}
diff --git a/sound/firewire/motu/motu-protocol-v1.c b/sound/firewire/motu/motu-protocol-v1.c
new file mode 100644
index 000000000..e811629f1
--- /dev/null
+++ b/sound/firewire/motu/motu-protocol-v1.c
@@ -0,0 +1,467 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// motu-protocol-v1.c - a part of driver for MOTU FireWire series
+//
+// Copyright (c) 2021 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+
+#include "motu.h"
+
+#include <linux/delay.h>
+
+// Status register for MOTU 828 (0x'ffff'f000'0b00).
+//
+// 0xffff0000: ISOC_COMM_CONTROL_MASK in motu-stream.c.
+// 0x00008000: mode of optical input interface.
+// 0x00008000: for S/PDIF signal.
+// 0x00000000: disabled or for ADAT signal.
+// 0x00004000: mode of optical output interface.
+// 0x00004000: for S/PDIF signal.
+// 0x00000000: disabled or for ADAT signal.
+// 0x00003f00: monitor input mode.
+// 0x00000800: analog-1/2
+// 0x00001a00: analog-3/4
+// 0x00002c00: analog-5/6
+// 0x00003e00: analog-7/8
+// 0x00000000: analog-1
+// 0x00000900: analog-2
+// 0x00001200: analog-3
+// 0x00001b00: analog-4
+// 0x00002400: analog-5
+// 0x00002d00: analog-6
+// 0x00003600: analog-7
+// 0x00003f00: analog-8
+// 0x00000080: enable stream input.
+// 0x00000040: disable monitor input.
+// 0x00000008: enable main out.
+// 0x00000004: rate of sampling clock.
+// 0x00000004: 48.0 kHz
+// 0x00000000: 44.1 kHz
+// 0x00000023: source of sampling clock.
+// 0x00000003: source packet header (SPH)
+// 0x00000002: S/PDIF on optical/coaxial interface.
+// 0x00000021: ADAT on optical interface
+// 0x00000001: ADAT on Dsub 9pin
+// 0x00000000: internal
+
+#define CLK_828_STATUS_OFFSET 0x0b00
+#define CLK_828_STATUS_MASK 0x0000ffff
+#define CLK_828_STATUS_FLAG_OPT_IN_IFACE_IS_SPDIF 0x00008000
+#define CLK_828_STATUS_FLAG_OPT_OUT_IFACE_IS_SPDIF 0x00004000
+#define CLK_828_STATUS_FLAG_FETCH_PCM_FRAMES 0x00000080
+#define CLK_828_STATUS_FLAG_ENABLE_OUTPUT 0x00000008
+#define CLK_828_STATUS_FLAG_RATE_48000 0x00000004
+#define CLK_828_STATUS_MASK_SRC 0x00000023
+#define CLK_828_STATUS_FLAG_SRC_ADAT_ON_OPT 0x00000021
+#define CLK_828_STATUS_FLAG_SRC_SPH 0x00000003
+#define CLK_828_STATUS_FLAG_SRC_SPDIF 0x00000002
+#define CLK_828_STATUS_FLAG_SRC_ADAT_ON_DSUB 0x00000001
+#define CLK_828_STATUS_FLAG_SRC_INTERNAL 0x00000000
+
+// Status register for MOTU 896 (0x'ffff'f000'0b14).
+//
+// 0xf0000000: enable physical and stream input to DAC.
+// 0x80000000: disable
+// 0x40000000: disable
+// 0x20000000: enable (prior to the other bits)
+// 0x10000000: disable
+// 0x00000000: disable
+// 0x08000000: speed of word clock signal output on BNC interface.
+// 0x00000000: force to low rate (44.1/48.0 kHz).
+// 0x08000000: follow to system clock.
+// 0x04000000: something relevant to clock.
+// 0x03000000: enable output.
+// 0x02000000: enabled irreversibly once standing unless the device voluntarily disables it.
+// 0x01000000: enabled irreversibly once standing unless the device voluntarily disables it.
+// 0x00ffff00: monitor input mode.
+// 0x00000000: disabled
+// 0x00004800: analog-1/2
+// 0x00005a00: analog-3/4
+// 0x00006c00: analog-5/6
+// 0x00007e00: analog-7/8
+// 0x00104800: AES/EBU-1/2
+// 0x00004000: analog-1
+// 0x00004900: analog-2
+// 0x00005200: analog-3
+// 0x00005b00: analog-4
+// 0x00006400: analog-5
+// 0x00006d00: analog-6
+// 0x00007600: analog-7
+// 0x00007f00: analog-8
+// 0x00104000: AES/EBU-1
+// 0x00104900: AES/EBU-2
+// 0x00000060: sample rate conversion for AES/EBU input/output.
+// 0x00000000: None
+// 0x00000020: input signal is converted to system rate
+// 0x00000040: output is slave to input, ignoring system rate
+// 0x00000060: output is double rate than system rate
+// 0x00000018: nominal rate of sampling clock.
+// 0x00000000: 44.1 kHz
+// 0x00000008: 48.0 kHz
+// 0x00000010: 88.2 kHz
+// 0x00000018: 96.0 kHz
+// 0x00000007: source of sampling clock.
+// 0x00000000: internal
+// 0x00000001: ADAT on optical interface
+// 0x00000002: AES/EBU on XLR
+// 0x00000003: source packet header (SPH)
+// 0x00000004: word clock on BNC
+// 0x00000005: ADAT on Dsub 9pin
+
+#define CLK_896_STATUS_OFFSET 0x0b14
+#define CLK_896_STATUS_FLAG_FETCH_ENABLE 0x20000000
+#define CLK_896_STATUS_FLAG_OUTPUT_ON 0x03000000
+#define CLK_896_STATUS_MASK_SRC 0x00000007
+#define CLK_896_STATUS_FLAG_SRC_INTERNAL 0x00000000
+#define CLK_896_STATUS_FLAG_SRC_ADAT_ON_OPT 0x00000001
+#define CLK_896_STATUS_FLAG_SRC_AESEBU 0x00000002
+#define CLK_896_STATUS_FLAG_SRC_SPH 0x00000003
+#define CLK_896_STATUS_FLAG_SRC_WORD 0x00000004
+#define CLK_896_STATUS_FLAG_SRC_ADAT_ON_DSUB 0x00000005
+#define CLK_896_STATUS_MASK_RATE 0x00000018
+#define CLK_896_STATUS_FLAG_RATE_44100 0x00000000
+#define CLK_896_STATUS_FLAG_RATE_48000 0x00000008
+#define CLK_896_STATUS_FLAG_RATE_88200 0x00000010
+#define CLK_896_STATUS_FLAG_RATE_96000 0x00000018
+
+static void parse_clock_rate_828(u32 data, unsigned int *rate)
+{
+ if (data & CLK_828_STATUS_FLAG_RATE_48000)
+ *rate = 48000;
+ else
+ *rate = 44100;
+}
+
+static int get_clock_rate_828(struct snd_motu *motu, unsigned int *rate)
+{
+ __be32 reg;
+ int err;
+
+ err = snd_motu_transaction_read(motu, CLK_828_STATUS_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ parse_clock_rate_828(be32_to_cpu(reg), rate);
+
+ return 0;
+}
+
+static int parse_clock_rate_896(u32 data, unsigned int *rate)
+{
+ switch (data & CLK_896_STATUS_MASK_RATE) {
+ case CLK_896_STATUS_FLAG_RATE_44100:
+ *rate = 44100;
+ break;
+ case CLK_896_STATUS_FLAG_RATE_48000:
+ *rate = 48000;
+ break;
+ case CLK_896_STATUS_FLAG_RATE_88200:
+ *rate = 88200;
+ break;
+ case CLK_896_STATUS_FLAG_RATE_96000:
+ *rate = 96000;
+ break;
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int get_clock_rate_896(struct snd_motu *motu, unsigned int *rate)
+{
+ __be32 reg;
+ int err;
+
+ err = snd_motu_transaction_read(motu, CLK_896_STATUS_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ return parse_clock_rate_896(be32_to_cpu(reg), rate);
+}
+
+int snd_motu_protocol_v1_get_clock_rate(struct snd_motu *motu, unsigned int *rate)
+{
+ if (motu->spec == &snd_motu_spec_828)
+ return get_clock_rate_828(motu, rate);
+ else if (motu->spec == &snd_motu_spec_896)
+ return get_clock_rate_896(motu, rate);
+ else
+ return -ENXIO;
+}
+
+static int set_clock_rate_828(struct snd_motu *motu, unsigned int rate)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, CLK_828_STATUS_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg) & CLK_828_STATUS_MASK;
+
+ data &= ~CLK_828_STATUS_FLAG_RATE_48000;
+ if (rate == 48000)
+ data |= CLK_828_STATUS_FLAG_RATE_48000;
+
+ reg = cpu_to_be32(data);
+ return snd_motu_transaction_write(motu, CLK_828_STATUS_OFFSET, &reg, sizeof(reg));
+}
+
+static int set_clock_rate_896(struct snd_motu *motu, unsigned int rate)
+{
+ unsigned int flag;
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, CLK_896_STATUS_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ switch (rate) {
+ case 44100:
+ flag = CLK_896_STATUS_FLAG_RATE_44100;
+ break;
+ case 48000:
+ flag = CLK_896_STATUS_FLAG_RATE_48000;
+ break;
+ case 88200:
+ flag = CLK_896_STATUS_FLAG_RATE_88200;
+ break;
+ case 96000:
+ flag = CLK_896_STATUS_FLAG_RATE_96000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ data &= ~CLK_896_STATUS_MASK_RATE;
+ data |= flag;
+
+ reg = cpu_to_be32(data);
+ return snd_motu_transaction_write(motu, CLK_896_STATUS_OFFSET, &reg, sizeof(reg));
+}
+
+int snd_motu_protocol_v1_set_clock_rate(struct snd_motu *motu, unsigned int rate)
+{
+ if (motu->spec == &snd_motu_spec_828)
+ return set_clock_rate_828(motu, rate);
+ else if (motu->spec == &snd_motu_spec_896)
+ return set_clock_rate_896(motu, rate);
+ else
+ return -ENXIO;
+}
+
+static int get_clock_source_828(struct snd_motu *motu, enum snd_motu_clock_source *src)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, CLK_828_STATUS_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg) & CLK_828_STATUS_MASK;
+
+ switch (data & CLK_828_STATUS_MASK_SRC) {
+ case CLK_828_STATUS_FLAG_SRC_ADAT_ON_OPT:
+ *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT;
+ break;
+ case CLK_828_STATUS_FLAG_SRC_SPH:
+ *src = SND_MOTU_CLOCK_SOURCE_SPH;
+ break;
+ case CLK_828_STATUS_FLAG_SRC_SPDIF:
+ {
+ if (data & CLK_828_STATUS_FLAG_OPT_IN_IFACE_IS_SPDIF)
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
+ else
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT;
+ break;
+ }
+ case CLK_828_STATUS_FLAG_SRC_ADAT_ON_DSUB:
+ *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB;
+ break;
+ case CLK_828_STATUS_FLAG_SRC_INTERNAL:
+ *src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
+ break;
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int get_clock_source_896(struct snd_motu *motu, enum snd_motu_clock_source *src)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, CLK_896_STATUS_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ switch (data & CLK_896_STATUS_MASK_SRC) {
+ case CLK_896_STATUS_FLAG_SRC_INTERNAL:
+ *src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
+ break;
+ case CLK_896_STATUS_FLAG_SRC_ADAT_ON_OPT:
+ *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT;
+ break;
+ case CLK_896_STATUS_FLAG_SRC_AESEBU:
+ *src = SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR;
+ break;
+ case CLK_896_STATUS_FLAG_SRC_SPH:
+ *src = SND_MOTU_CLOCK_SOURCE_SPH;
+ break;
+ case CLK_896_STATUS_FLAG_SRC_WORD:
+ *src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
+ break;
+ case CLK_896_STATUS_FLAG_SRC_ADAT_ON_DSUB:
+ *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB;
+ break;
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+int snd_motu_protocol_v1_get_clock_source(struct snd_motu *motu, enum snd_motu_clock_source *src)
+{
+ if (motu->spec == &snd_motu_spec_828)
+ return get_clock_source_828(motu, src);
+ else if (motu->spec == &snd_motu_spec_896)
+ return get_clock_source_896(motu, src);
+ else
+ return -ENXIO;
+}
+
+static int switch_fetching_mode_828(struct snd_motu *motu, bool enable)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, CLK_828_STATUS_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg) & CLK_828_STATUS_MASK;
+
+ data &= ~(CLK_828_STATUS_FLAG_FETCH_PCM_FRAMES | CLK_828_STATUS_FLAG_ENABLE_OUTPUT);
+ if (enable) {
+ // This transaction should be initiated after the device receives batch of packets
+ // since the device voluntarily mutes outputs. As a workaround, yield processor over
+ // 100 msec.
+ msleep(100);
+ data |= CLK_828_STATUS_FLAG_FETCH_PCM_FRAMES | CLK_828_STATUS_FLAG_ENABLE_OUTPUT;
+ }
+
+ reg = cpu_to_be32(data);
+ return snd_motu_transaction_write(motu, CLK_828_STATUS_OFFSET, &reg, sizeof(reg));
+}
+
+static int switch_fetching_mode_896(struct snd_motu *motu, bool enable)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, CLK_896_STATUS_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ data &= ~CLK_896_STATUS_FLAG_FETCH_ENABLE;
+ if (enable)
+ data |= CLK_896_STATUS_FLAG_FETCH_ENABLE | CLK_896_STATUS_FLAG_OUTPUT_ON;
+
+ reg = cpu_to_be32(data);
+ return snd_motu_transaction_write(motu, CLK_896_STATUS_OFFSET, &reg, sizeof(reg));
+}
+
+int snd_motu_protocol_v1_switch_fetching_mode(struct snd_motu *motu, bool enable)
+{
+ if (motu->spec == &snd_motu_spec_828)
+ return switch_fetching_mode_828(motu, enable);
+ else if (motu->spec == &snd_motu_spec_896)
+ return switch_fetching_mode_896(motu, enable);
+ else
+ return -ENXIO;
+}
+
+static int detect_packet_formats_828(struct snd_motu *motu)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ motu->tx_packet_formats.pcm_byte_offset = 4;
+ motu->tx_packet_formats.msg_chunks = 2;
+
+ motu->rx_packet_formats.pcm_byte_offset = 4;
+ motu->rx_packet_formats.msg_chunks = 0;
+
+ err = snd_motu_transaction_read(motu, CLK_828_STATUS_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg) & CLK_828_STATUS_MASK;
+
+ // The number of chunks is just reduced when SPDIF is activated.
+ if (!(data & CLK_828_STATUS_FLAG_OPT_IN_IFACE_IS_SPDIF))
+ motu->tx_packet_formats.pcm_chunks[0] += 8;
+
+ if (!(data & CLK_828_STATUS_FLAG_OPT_OUT_IFACE_IS_SPDIF))
+ motu->rx_packet_formats.pcm_chunks[0] += 8;
+
+ return 0;
+}
+
+static int detect_packet_formats_896(struct snd_motu *motu)
+{
+ // 24bit PCM frames follow to source packet header without message chunk.
+ motu->tx_packet_formats.pcm_byte_offset = 4;
+ motu->rx_packet_formats.pcm_byte_offset = 4;
+
+ // No message chunk in data block.
+ motu->tx_packet_formats.msg_chunks = 0;
+ motu->rx_packet_formats.msg_chunks = 0;
+
+ // Always enable optical interface for ADAT signal since the device have no registers
+ // to refer to current configuration.
+ motu->tx_packet_formats.pcm_chunks[0] += 8;
+ motu->tx_packet_formats.pcm_chunks[1] += 8;
+
+ motu->rx_packet_formats.pcm_chunks[0] += 8;
+ motu->rx_packet_formats.pcm_chunks[1] += 8;
+
+ return 0;
+}
+
+int snd_motu_protocol_v1_cache_packet_formats(struct snd_motu *motu)
+{
+ memcpy(motu->tx_packet_formats.pcm_chunks, motu->spec->tx_fixed_pcm_chunks,
+ sizeof(motu->tx_packet_formats.pcm_chunks));
+ memcpy(motu->rx_packet_formats.pcm_chunks, motu->spec->rx_fixed_pcm_chunks,
+ sizeof(motu->rx_packet_formats.pcm_chunks));
+
+ if (motu->spec == &snd_motu_spec_828)
+ return detect_packet_formats_828(motu);
+ else if (motu->spec == &snd_motu_spec_896)
+ return detect_packet_formats_896(motu);
+ else
+ return 0;
+}
+
+const struct snd_motu_spec snd_motu_spec_828 = {
+ .name = "828",
+ .protocol_version = SND_MOTU_PROTOCOL_V1,
+ .tx_fixed_pcm_chunks = {10, 0, 0},
+ .rx_fixed_pcm_chunks = {10, 0, 0},
+};
+
+const struct snd_motu_spec snd_motu_spec_896 = {
+ .name = "896",
+ .tx_fixed_pcm_chunks = {10, 10, 0},
+ .rx_fixed_pcm_chunks = {10, 10, 0},
+};
diff --git a/sound/firewire/motu/motu-protocol-v2.c b/sound/firewire/motu/motu-protocol-v2.c
new file mode 100644
index 000000000..a5f70efa2
--- /dev/null
+++ b/sound/firewire/motu/motu-protocol-v2.c
@@ -0,0 +1,321 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * motu-protocol-v2.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+#include "motu.h"
+
+#define V2_CLOCK_STATUS_OFFSET 0x0b14
+#define V2_CLOCK_RATE_MASK 0x00000038
+#define V2_CLOCK_RATE_SHIFT 3
+#define V2_CLOCK_SRC_MASK 0x00000007
+#define V2_CLOCK_SRC_SHIFT 0
+#define V2_CLOCK_SRC_AESEBU_ON_XLR 0x07 // In Traveler.
+#define V2_CLOCK_SRC_ADAT_ON_DSUB 0x05
+#define V2_CLOCK_SRC_WORD_ON_BNC 0x04
+#define V2_CLOCK_SRC_SPH 0x03
+#define V2_CLOCK_SRC_SPDIF 0x02 // on either coaxial or optical. AES/EBU in 896HD.
+#define V2_CLOCK_SRC_ADAT_ON_OPT 0x01
+#define V2_CLOCK_SRC_INTERNAL 0x00
+#define V2_CLOCK_FETCH_ENABLE 0x02000000
+#define V2_CLOCK_MODEL_SPECIFIC 0x04000000
+
+#define V2_IN_OUT_CONF_OFFSET 0x0c04
+#define V2_OPT_OUT_IFACE_MASK 0x00000c00
+#define V2_OPT_OUT_IFACE_SHIFT 10
+#define V2_OPT_IN_IFACE_MASK 0x00000300
+#define V2_OPT_IN_IFACE_SHIFT 8
+#define V2_OPT_IFACE_MODE_NONE 0
+#define V2_OPT_IFACE_MODE_ADAT 1
+#define V2_OPT_IFACE_MODE_SPDIF 2
+
+static int get_clock_rate(u32 data, unsigned int *rate)
+{
+ unsigned int index = (data & V2_CLOCK_RATE_MASK) >> V2_CLOCK_RATE_SHIFT;
+ if (index >= ARRAY_SIZE(snd_motu_clock_rates))
+ return -EIO;
+
+ *rate = snd_motu_clock_rates[index];
+
+ return 0;
+}
+
+int snd_motu_protocol_v2_get_clock_rate(struct snd_motu *motu,
+ unsigned int *rate)
+{
+ __be32 reg;
+ int err;
+
+ err = snd_motu_transaction_read(motu, V2_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+
+ return get_clock_rate(be32_to_cpu(reg), rate);
+}
+
+int snd_motu_protocol_v2_set_clock_rate(struct snd_motu *motu,
+ unsigned int rate)
+{
+ __be32 reg;
+ u32 data;
+ int i;
+ int err;
+
+ for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
+ if (snd_motu_clock_rates[i] == rate)
+ break;
+ }
+ if (i == ARRAY_SIZE(snd_motu_clock_rates))
+ return -EINVAL;
+
+ err = snd_motu_transaction_read(motu, V2_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ data &= ~V2_CLOCK_RATE_MASK;
+ data |= i << V2_CLOCK_RATE_SHIFT;
+
+ reg = cpu_to_be32(data);
+ return snd_motu_transaction_write(motu, V2_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+}
+
+static int get_clock_source(struct snd_motu *motu, u32 data,
+ enum snd_motu_clock_source *src)
+{
+ switch (data & V2_CLOCK_SRC_MASK) {
+ case V2_CLOCK_SRC_INTERNAL:
+ *src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
+ break;
+ case V2_CLOCK_SRC_ADAT_ON_OPT:
+ *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT;
+ break;
+ case V2_CLOCK_SRC_SPDIF:
+ {
+ bool support_iec60958_on_opt = (motu->spec == &snd_motu_spec_828mk2 ||
+ motu->spec == &snd_motu_spec_traveler);
+
+ if (motu->spec == &snd_motu_spec_896hd) {
+ *src = SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR;
+ } else if (!support_iec60958_on_opt) {
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
+ } else {
+ __be32 reg;
+
+ // To check the configuration of optical interface.
+ int err = snd_motu_transaction_read(motu, V2_IN_OUT_CONF_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+
+ if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) ==
+ V2_OPT_IFACE_MODE_SPDIF)
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT;
+ else
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
+ }
+ break;
+ }
+ case V2_CLOCK_SRC_SPH:
+ *src = SND_MOTU_CLOCK_SOURCE_SPH;
+ break;
+ case V2_CLOCK_SRC_WORD_ON_BNC:
+ *src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
+ break;
+ case V2_CLOCK_SRC_ADAT_ON_DSUB:
+ *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB;
+ break;
+ case V2_CLOCK_SRC_AESEBU_ON_XLR:
+ // For Traveler.
+ *src = SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR;
+ break;
+ default:
+ *src = SND_MOTU_CLOCK_SOURCE_UNKNOWN;
+ break;
+ }
+
+ return 0;
+}
+
+int snd_motu_protocol_v2_get_clock_source(struct snd_motu *motu,
+ enum snd_motu_clock_source *src)
+{
+ __be32 reg;
+ int err;
+
+ err = snd_motu_transaction_read(motu, V2_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+
+ return get_clock_source(motu, be32_to_cpu(reg), src);
+}
+
+// Expected for Traveler, which implements Altera Cyclone EP1C3.
+static int switch_fetching_mode_cyclone(struct snd_motu *motu, u32 *data,
+ bool enable)
+{
+ *data |= V2_CLOCK_MODEL_SPECIFIC;
+
+ return 0;
+}
+
+// For UltraLite and 8pre, which implements Xilinx Spartan XC3S200.
+static int switch_fetching_mode_spartan(struct snd_motu *motu, u32 *data,
+ bool enable)
+{
+ unsigned int rate;
+ enum snd_motu_clock_source src;
+ int err;
+
+ err = get_clock_source(motu, *data, &src);
+ if (err < 0)
+ return err;
+
+ err = get_clock_rate(*data, &rate);
+ if (err < 0)
+ return err;
+
+ if (src == SND_MOTU_CLOCK_SOURCE_SPH && rate > 48000)
+ *data |= V2_CLOCK_MODEL_SPECIFIC;
+
+ return 0;
+}
+
+int snd_motu_protocol_v2_switch_fetching_mode(struct snd_motu *motu,
+ bool enable)
+{
+ if (motu->spec == &snd_motu_spec_828mk2) {
+ // 828mkII implements Altera ACEX 1K EP1K30. Nothing to do.
+ return 0;
+ } else if (motu->spec == &snd_motu_spec_896hd) {
+ // 896HD implements Altera Cyclone EP1C3 but nothing to do.
+ return 0;
+ } else {
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, V2_CLOCK_STATUS_OFFSET,
+ &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ data &= ~(V2_CLOCK_FETCH_ENABLE | V2_CLOCK_MODEL_SPECIFIC);
+ if (enable)
+ data |= V2_CLOCK_FETCH_ENABLE;
+
+ if (motu->spec == &snd_motu_spec_traveler)
+ err = switch_fetching_mode_cyclone(motu, &data, enable);
+ else
+ err = switch_fetching_mode_spartan(motu, &data, enable);
+ if (err < 0)
+ return err;
+
+ reg = cpu_to_be32(data);
+ return snd_motu_transaction_write(motu, V2_CLOCK_STATUS_OFFSET,
+ &reg, sizeof(reg));
+ }
+}
+
+int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu)
+{
+ bool has_two_opt_ifaces = (motu->spec == &snd_motu_spec_8pre);
+ __be32 reg;
+ u32 data;
+ int err;
+
+ motu->tx_packet_formats.pcm_byte_offset = 10;
+ motu->rx_packet_formats.pcm_byte_offset = 10;
+
+ motu->tx_packet_formats.msg_chunks = 2;
+ motu->rx_packet_formats.msg_chunks = 2;
+
+ err = snd_motu_transaction_read(motu, V2_IN_OUT_CONF_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ memcpy(motu->tx_packet_formats.pcm_chunks,
+ motu->spec->tx_fixed_pcm_chunks,
+ sizeof(motu->tx_packet_formats.pcm_chunks));
+ memcpy(motu->rx_packet_formats.pcm_chunks,
+ motu->spec->rx_fixed_pcm_chunks,
+ sizeof(motu->rx_packet_formats.pcm_chunks));
+
+ if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) == V2_OPT_IFACE_MODE_ADAT) {
+ motu->tx_packet_formats.pcm_chunks[0] += 8;
+
+ if (!has_two_opt_ifaces)
+ motu->tx_packet_formats.pcm_chunks[1] += 4;
+ else
+ motu->tx_packet_formats.pcm_chunks[1] += 8;
+ }
+
+ if (((data & V2_OPT_OUT_IFACE_MASK) >> V2_OPT_OUT_IFACE_SHIFT) == V2_OPT_IFACE_MODE_ADAT) {
+ motu->rx_packet_formats.pcm_chunks[0] += 8;
+
+ if (!has_two_opt_ifaces)
+ motu->rx_packet_formats.pcm_chunks[1] += 4;
+ else
+ motu->rx_packet_formats.pcm_chunks[1] += 8;
+ }
+
+ return 0;
+}
+
+const struct snd_motu_spec snd_motu_spec_828mk2 = {
+ .name = "828mk2",
+ .protocol_version = SND_MOTU_PROTOCOL_V2,
+ .flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_TX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_REGISTER_DSP,
+ .tx_fixed_pcm_chunks = {14, 14, 0},
+ .rx_fixed_pcm_chunks = {14, 14, 0},
+};
+
+const struct snd_motu_spec snd_motu_spec_896hd = {
+ .name = "896HD",
+ .protocol_version = SND_MOTU_PROTOCOL_V2,
+ .flags = SND_MOTU_SPEC_REGISTER_DSP,
+ .tx_fixed_pcm_chunks = {14, 14, 8},
+ .rx_fixed_pcm_chunks = {14, 14, 8},
+};
+
+const struct snd_motu_spec snd_motu_spec_traveler = {
+ .name = "Traveler",
+ .protocol_version = SND_MOTU_PROTOCOL_V2,
+ .flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_TX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_REGISTER_DSP,
+ .tx_fixed_pcm_chunks = {14, 14, 8},
+ .rx_fixed_pcm_chunks = {14, 14, 8},
+};
+
+const struct snd_motu_spec snd_motu_spec_ultralite = {
+ .name = "UltraLite",
+ .protocol_version = SND_MOTU_PROTOCOL_V2,
+ .flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_TX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_REGISTER_DSP,
+ .tx_fixed_pcm_chunks = {14, 14, 0},
+ .rx_fixed_pcm_chunks = {14, 14, 0},
+};
+
+const struct snd_motu_spec snd_motu_spec_8pre = {
+ .name = "8pre",
+ .protocol_version = SND_MOTU_PROTOCOL_V2,
+ .flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_TX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_REGISTER_DSP,
+ // Two dummy chunks always in the end of data block.
+ .tx_fixed_pcm_chunks = {10, 10, 0},
+ .rx_fixed_pcm_chunks = {6, 6, 0},
+};
diff --git a/sound/firewire/motu/motu-protocol-v3.c b/sound/firewire/motu/motu-protocol-v3.c
new file mode 100644
index 000000000..8a0426920
--- /dev/null
+++ b/sound/firewire/motu/motu-protocol-v3.c
@@ -0,0 +1,337 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * motu-protocol-v3.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+#include <linux/delay.h>
+#include "motu.h"
+
+#define V3_CLOCK_STATUS_OFFSET 0x0b14
+#define V3_FETCH_PCM_FRAMES 0x02000000
+#define V3_CLOCK_RATE_MASK 0x0000ff00
+#define V3_CLOCK_RATE_SHIFT 8
+#define V3_CLOCK_SOURCE_MASK 0x000000ff
+#define V3_CLOCK_SRC_INTERNAL 0x00
+#define V3_CLOCK_SRC_WORD_ON_BNC 0x01
+#define V3_CLOCK_SRC_SPH 0x02
+#define V3_CLOCK_SRC_AESEBU_ON_XLR 0x08
+#define V3_CLOCK_SRC_SPDIF_ON_COAX 0x10
+#define V3_CLOCK_SRC_OPT_IFACE_A 0x18
+#define V3_CLOCK_SRC_OPT_IFACE_B 0x19
+
+#define V3_OPT_IFACE_MODE_OFFSET 0x0c94
+#define V3_ENABLE_OPT_IN_IFACE_A 0x00000001
+#define V3_ENABLE_OPT_IN_IFACE_B 0x00000002
+#define V3_ENABLE_OPT_OUT_IFACE_A 0x00000100
+#define V3_ENABLE_OPT_OUT_IFACE_B 0x00000200
+#define V3_NO_ADAT_OPT_IN_IFACE_A 0x00010000
+#define V3_NO_ADAT_OPT_IN_IFACE_B 0x00100000
+#define V3_NO_ADAT_OPT_OUT_IFACE_A 0x00040000
+#define V3_NO_ADAT_OPT_OUT_IFACE_B 0x00400000
+
+#define V3_MSG_FLAG_CLK_CHANGED 0x00000002
+#define V3_CLK_WAIT_MSEC 4000
+
+int snd_motu_protocol_v3_get_clock_rate(struct snd_motu *motu,
+ unsigned int *rate)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, V3_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ data = (data & V3_CLOCK_RATE_MASK) >> V3_CLOCK_RATE_SHIFT;
+ if (data >= ARRAY_SIZE(snd_motu_clock_rates))
+ return -EIO;
+
+ *rate = snd_motu_clock_rates[data];
+
+ return 0;
+}
+
+int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu,
+ unsigned int rate)
+{
+ __be32 reg;
+ u32 data;
+ bool need_to_wait;
+ int i, err;
+
+ for (i = 0; i < ARRAY_SIZE(snd_motu_clock_rates); ++i) {
+ if (snd_motu_clock_rates[i] == rate)
+ break;
+ }
+ if (i == ARRAY_SIZE(snd_motu_clock_rates))
+ return -EINVAL;
+
+ err = snd_motu_transaction_read(motu, V3_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ data &= ~(V3_CLOCK_RATE_MASK | V3_FETCH_PCM_FRAMES);
+ data |= i << V3_CLOCK_RATE_SHIFT;
+
+ need_to_wait = data != be32_to_cpu(reg);
+
+ reg = cpu_to_be32(data);
+ err = snd_motu_transaction_write(motu, V3_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+
+ if (need_to_wait) {
+ int result;
+
+ motu->msg = 0;
+ result = wait_event_interruptible_timeout(motu->hwdep_wait,
+ motu->msg & V3_MSG_FLAG_CLK_CHANGED,
+ msecs_to_jiffies(V3_CLK_WAIT_MSEC));
+ if (result < 0)
+ return result;
+ if (result == 0)
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu,
+ enum snd_motu_clock_source *src)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, V3_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg) & V3_CLOCK_SOURCE_MASK;
+
+ switch (data) {
+ case V3_CLOCK_SRC_INTERNAL:
+ *src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
+ break;
+ case V3_CLOCK_SRC_WORD_ON_BNC:
+ *src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
+ break;
+ case V3_CLOCK_SRC_SPH:
+ *src = SND_MOTU_CLOCK_SOURCE_SPH;
+ break;
+ case V3_CLOCK_SRC_AESEBU_ON_XLR:
+ *src = SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR;
+ break;
+ case V3_CLOCK_SRC_SPDIF_ON_COAX:
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
+ break;
+ case V3_CLOCK_SRC_OPT_IFACE_A:
+ case V3_CLOCK_SRC_OPT_IFACE_B:
+ {
+ __be32 reg;
+ u32 options;
+
+ err = snd_motu_transaction_read(motu,
+ V3_OPT_IFACE_MODE_OFFSET, &reg, sizeof(reg));
+ if (err < 0)
+ return err;
+ options = be32_to_cpu(reg);
+
+ if (data == V3_CLOCK_SRC_OPT_IFACE_A) {
+ if (options & V3_NO_ADAT_OPT_IN_IFACE_A)
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A;
+ else
+ *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A;
+ } else {
+ if (options & V3_NO_ADAT_OPT_IN_IFACE_B)
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B;
+ else
+ *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B;
+ }
+ break;
+ }
+ default:
+ *src = SND_MOTU_CLOCK_SOURCE_UNKNOWN;
+ break;
+ }
+
+ return 0;
+}
+
+int snd_motu_protocol_v3_switch_fetching_mode(struct snd_motu *motu,
+ bool enable)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, V3_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return 0;
+ data = be32_to_cpu(reg);
+
+ if (enable)
+ data |= V3_FETCH_PCM_FRAMES;
+ else
+ data &= ~V3_FETCH_PCM_FRAMES;
+
+ reg = cpu_to_be32(data);
+ return snd_motu_transaction_write(motu, V3_CLOCK_STATUS_OFFSET, &reg,
+ sizeof(reg));
+}
+
+static int detect_packet_formats_with_opt_ifaces(struct snd_motu *motu, u32 data)
+{
+ if (data & V3_ENABLE_OPT_IN_IFACE_A) {
+ if (data & V3_NO_ADAT_OPT_IN_IFACE_A) {
+ motu->tx_packet_formats.pcm_chunks[0] += 4;
+ motu->tx_packet_formats.pcm_chunks[1] += 4;
+ } else {
+ motu->tx_packet_formats.pcm_chunks[0] += 8;
+ motu->tx_packet_formats.pcm_chunks[1] += 4;
+ }
+ }
+
+ if (data & V3_ENABLE_OPT_IN_IFACE_B) {
+ if (data & V3_NO_ADAT_OPT_IN_IFACE_B) {
+ motu->tx_packet_formats.pcm_chunks[0] += 4;
+ motu->tx_packet_formats.pcm_chunks[1] += 4;
+ } else {
+ motu->tx_packet_formats.pcm_chunks[0] += 8;
+ motu->tx_packet_formats.pcm_chunks[1] += 4;
+ }
+ }
+
+ if (data & V3_ENABLE_OPT_OUT_IFACE_A) {
+ if (data & V3_NO_ADAT_OPT_OUT_IFACE_A) {
+ motu->rx_packet_formats.pcm_chunks[0] += 4;
+ motu->rx_packet_formats.pcm_chunks[1] += 4;
+ } else {
+ motu->rx_packet_formats.pcm_chunks[0] += 8;
+ motu->rx_packet_formats.pcm_chunks[1] += 4;
+ }
+ }
+
+ if (data & V3_ENABLE_OPT_OUT_IFACE_B) {
+ if (data & V3_NO_ADAT_OPT_OUT_IFACE_B) {
+ motu->rx_packet_formats.pcm_chunks[0] += 4;
+ motu->rx_packet_formats.pcm_chunks[1] += 4;
+ } else {
+ motu->rx_packet_formats.pcm_chunks[0] += 8;
+ motu->rx_packet_formats.pcm_chunks[1] += 4;
+ }
+ }
+
+ return 0;
+}
+
+int snd_motu_protocol_v3_cache_packet_formats(struct snd_motu *motu)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ motu->tx_packet_formats.pcm_byte_offset = 10;
+ motu->rx_packet_formats.pcm_byte_offset = 10;
+
+ motu->tx_packet_formats.msg_chunks = 2;
+ motu->rx_packet_formats.msg_chunks = 2;
+
+ err = snd_motu_transaction_read(motu, V3_OPT_IFACE_MODE_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ memcpy(motu->tx_packet_formats.pcm_chunks,
+ motu->spec->tx_fixed_pcm_chunks,
+ sizeof(motu->tx_packet_formats.pcm_chunks));
+ memcpy(motu->rx_packet_formats.pcm_chunks,
+ motu->spec->rx_fixed_pcm_chunks,
+ sizeof(motu->rx_packet_formats.pcm_chunks));
+
+ if (motu->spec == &snd_motu_spec_828mk3_fw ||
+ motu->spec == &snd_motu_spec_828mk3_hybrid ||
+ motu->spec == &snd_motu_spec_traveler_mk3 ||
+ motu->spec == &snd_motu_spec_track16)
+ return detect_packet_formats_with_opt_ifaces(motu, data);
+ else
+ return 0;
+}
+
+const struct snd_motu_spec snd_motu_spec_828mk3_fw = {
+ .name = "828mk3",
+ .protocol_version = SND_MOTU_PROTOCOL_V3,
+ .flags = SND_MOTU_SPEC_RX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_TX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_COMMAND_DSP,
+ .tx_fixed_pcm_chunks = {18, 18, 14},
+ .rx_fixed_pcm_chunks = {14, 14, 10},
+};
+
+const struct snd_motu_spec snd_motu_spec_828mk3_hybrid = {
+ .name = "828mk3",
+ .protocol_version = SND_MOTU_PROTOCOL_V3,
+ .flags = SND_MOTU_SPEC_RX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_TX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_COMMAND_DSP,
+ .tx_fixed_pcm_chunks = {18, 18, 14},
+ .rx_fixed_pcm_chunks = {14, 14, 14}, // Additional 4 dummy chunks at higher rate.
+};
+
+const struct snd_motu_spec snd_motu_spec_traveler_mk3 = {
+ .name = "TravelerMk3",
+ .protocol_version = SND_MOTU_PROTOCOL_V3,
+ .flags = SND_MOTU_SPEC_RX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_TX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_COMMAND_DSP,
+ .tx_fixed_pcm_chunks = {18, 14, 10},
+ .rx_fixed_pcm_chunks = {14, 14, 10},
+};
+
+const struct snd_motu_spec snd_motu_spec_ultralite_mk3 = {
+ .name = "UltraLiteMk3",
+ .protocol_version = SND_MOTU_PROTOCOL_V3,
+ .flags = SND_MOTU_SPEC_RX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_TX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_COMMAND_DSP,
+ .tx_fixed_pcm_chunks = {18, 14, 10},
+ .rx_fixed_pcm_chunks = {14, 14, 14},
+};
+
+const struct snd_motu_spec snd_motu_spec_audio_express = {
+ .name = "AudioExpress",
+ .protocol_version = SND_MOTU_PROTOCOL_V3,
+ .flags = SND_MOTU_SPEC_RX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_TX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_REGISTER_DSP,
+ .tx_fixed_pcm_chunks = {10, 10, 0},
+ .rx_fixed_pcm_chunks = {10, 10, 0},
+};
+
+const struct snd_motu_spec snd_motu_spec_track16 = {
+ .name = "Track16",
+ .protocol_version = SND_MOTU_PROTOCOL_V3,
+ .flags = SND_MOTU_SPEC_RX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_TX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_COMMAND_DSP,
+ .tx_fixed_pcm_chunks = {14, 14, 14},
+ .rx_fixed_pcm_chunks = {6, 6, 6},
+};
+
+const struct snd_motu_spec snd_motu_spec_4pre = {
+ .name = "4pre",
+ .protocol_version = SND_MOTU_PROTOCOL_V3,
+ .flags = SND_MOTU_SPEC_REGISTER_DSP,
+ .tx_fixed_pcm_chunks = {10, 10, 0},
+ .rx_fixed_pcm_chunks = {10, 10, 0},
+};
diff --git a/sound/firewire/motu/motu-register-dsp-message-parser.c b/sound/firewire/motu/motu-register-dsp-message-parser.c
new file mode 100644
index 000000000..0c5875675
--- /dev/null
+++ b/sound/firewire/motu/motu-register-dsp-message-parser.c
@@ -0,0 +1,420 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// motu-register-dsp-message-parser.c - a part of driver for MOTU FireWire series
+//
+// Copyright (c) 2021 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+
+// Below models allow software to configure their DSP functions by asynchronous transaction
+// to access their internal registers.
+// * 828 mk2
+// * 896hd
+// * Traveler
+// * 8 pre
+// * Ultralite
+// * 4 pre
+// * Audio Express
+//
+// Additionally, isochronous packets from the above models include messages to notify state of
+// DSP. The messages are two set of 3 byte data in 2nd and 3rd quadlet of data block. When user
+// operates hardware components such as dial and switch, corresponding messages are transferred.
+// The messages include Hardware metering and MIDI messages as well.
+
+#include "motu.h"
+
+#define MSG_FLAG_POS 4
+#define MSG_FLAG_TYPE_MASK 0xf8
+#define MSG_FLAG_MIDI_MASK 0x01
+#define MSG_FLAG_MODEL_SPECIFIC_MASK 0x06
+#define MSG_FLAG_8PRE 0x00
+#define MSG_FLAG_ULTRALITE 0x04
+#define MSG_FLAG_TRAVELER 0x04
+#define MSG_FLAG_828MK2 0x04
+#define MSG_FLAG_896HD 0x04
+#define MSG_FLAG_4PRE 0x05 // MIDI mask is in 8th byte.
+#define MSG_FLAG_AUDIOEXPRESS 0x05 // MIDI mask is in 8th byte.
+#define MSG_FLAG_TYPE_SHIFT 3
+#define MSG_VALUE_POS 5
+#define MSG_MIDI_BYTE_POS 6
+#define MSG_METER_IDX_POS 7
+
+// In 4 pre and Audio express, meter index is in 6th byte. MIDI flag is in 8th byte and MIDI byte
+// is in 7th byte.
+#define MSG_METER_IDX_POS_4PRE_AE 6
+#define MSG_MIDI_BYTE_POS_4PRE_AE 7
+#define MSG_FLAG_MIDI_POS_4PRE_AE 8
+
+enum register_dsp_msg_type {
+ // Used for messages with no information.
+ INVALID = 0x00,
+ MIXER_SELECT = 0x01,
+ MIXER_SRC_GAIN = 0x02,
+ MIXER_SRC_PAN = 0x03,
+ MIXER_SRC_FLAG = 0x04,
+ MIXER_OUTPUT_PAIRED_VOLUME = 0x05,
+ MIXER_OUTPUT_PAIRED_FLAG = 0x06,
+ MAIN_OUTPUT_PAIRED_VOLUME = 0x07,
+ HP_OUTPUT_PAIRED_VOLUME = 0x08,
+ HP_OUTPUT_PAIRED_ASSIGNMENT = 0x09,
+ // Transferred by all models but the purpose is still unknown.
+ UNKNOWN_0 = 0x0a,
+ // Specific to 828mk2, 896hd, Traveler.
+ UNKNOWN_2 = 0x0c,
+ // Specific to 828mk2, Traveler, and 896hd (not functional).
+ LINE_INPUT_BOOST = 0x0d,
+ // Specific to 828mk2, Traveler, and 896hd (not functional).
+ LINE_INPUT_NOMINAL_LEVEL = 0x0e,
+ // Specific to Ultralite, 4 pre, Audio express, and 8 pre (not functional).
+ INPUT_GAIN_AND_INVERT = 0x15,
+ // Specific to 4 pre, and Audio express.
+ INPUT_FLAG = 0x16,
+ // Specific to 4 pre, and Audio express.
+ MIXER_SRC_PAIRED_BALANCE = 0x17,
+ // Specific to 4 pre, and Audio express.
+ MIXER_SRC_PAIRED_WIDTH = 0x18,
+ // Transferred by all models. This type of message interposes the series of the other
+ // messages. The message delivers signal level up to 96.0 kHz. In 828mk2, 896hd, and
+ // Traveler, one of physical outputs is selected for the message. The selection is done
+ // by LSB one byte in asynchronous write quadlet transaction to 0x'ffff'f000'0b2c.
+ METER = 0x1f,
+};
+
+#define EVENT_QUEUE_SIZE 16
+
+struct msg_parser {
+ spinlock_t lock;
+ struct snd_firewire_motu_register_dsp_meter meter;
+ bool meter_pos_quirk;
+
+ struct snd_firewire_motu_register_dsp_parameter param;
+ u8 prev_mixer_src_type;
+ u8 mixer_ch;
+ u8 mixer_src_ch;
+
+ u8 input_ch;
+ u8 prev_msg_type;
+
+ u32 event_queue[EVENT_QUEUE_SIZE];
+ unsigned int push_pos;
+ unsigned int pull_pos;
+};
+
+int snd_motu_register_dsp_message_parser_new(struct snd_motu *motu)
+{
+ struct msg_parser *parser;
+ parser = devm_kzalloc(&motu->card->card_dev, sizeof(*parser), GFP_KERNEL);
+ if (!parser)
+ return -ENOMEM;
+ spin_lock_init(&parser->lock);
+ if (motu->spec == &snd_motu_spec_4pre || motu->spec == &snd_motu_spec_audio_express)
+ parser->meter_pos_quirk = true;
+ motu->message_parser = parser;
+ return 0;
+}
+
+int snd_motu_register_dsp_message_parser_init(struct snd_motu *motu)
+{
+ struct msg_parser *parser = motu->message_parser;
+
+ parser->prev_mixer_src_type = INVALID;
+ parser->mixer_ch = 0xff;
+ parser->mixer_src_ch = 0xff;
+ parser->prev_msg_type = INVALID;
+
+ return 0;
+}
+
+// Rough implementaion of queue without overrun check.
+static void queue_event(struct snd_motu *motu, u8 msg_type, u8 identifier0, u8 identifier1, u8 val)
+{
+ struct msg_parser *parser = motu->message_parser;
+ unsigned int pos = parser->push_pos;
+ u32 entry;
+
+ if (!motu->hwdep || motu->hwdep->used == 0)
+ return;
+
+ entry = (msg_type << 24) | (identifier0 << 16) | (identifier1 << 8) | val;
+ parser->event_queue[pos] = entry;
+
+ ++pos;
+ if (pos >= EVENT_QUEUE_SIZE)
+ pos = 0;
+ parser->push_pos = pos;
+}
+
+void snd_motu_register_dsp_message_parser_parse(struct snd_motu *motu, const struct pkt_desc *descs,
+ unsigned int desc_count, unsigned int data_block_quadlets)
+{
+ struct msg_parser *parser = motu->message_parser;
+ bool meter_pos_quirk = parser->meter_pos_quirk;
+ unsigned int pos = parser->push_pos;
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&parser->lock, flags);
+
+ for (i = 0; i < desc_count; ++i) {
+ const struct pkt_desc *desc = descs + i;
+ __be32 *buffer = desc->ctx_payload;
+ unsigned int data_blocks = desc->data_blocks;
+ int j;
+
+ for (j = 0; j < data_blocks; ++j) {
+ u8 *b = (u8 *)buffer;
+ u8 msg_type = (b[MSG_FLAG_POS] & MSG_FLAG_TYPE_MASK) >> MSG_FLAG_TYPE_SHIFT;
+ u8 val = b[MSG_VALUE_POS];
+
+ buffer += data_block_quadlets;
+
+ switch (msg_type) {
+ case MIXER_SELECT:
+ {
+ u8 mixer_ch = val / 0x20;
+ if (mixer_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT) {
+ parser->mixer_src_ch = 0;
+ parser->mixer_ch = mixer_ch;
+ }
+ break;
+ }
+ case MIXER_SRC_GAIN:
+ case MIXER_SRC_PAN:
+ case MIXER_SRC_FLAG:
+ case MIXER_SRC_PAIRED_BALANCE:
+ case MIXER_SRC_PAIRED_WIDTH:
+ {
+ struct snd_firewire_motu_register_dsp_parameter *param = &parser->param;
+ u8 mixer_ch = parser->mixer_ch;
+ u8 mixer_src_ch = parser->mixer_src_ch;
+
+ if (msg_type != parser->prev_mixer_src_type)
+ mixer_src_ch = 0;
+ else
+ ++mixer_src_ch;
+ parser->prev_mixer_src_type = msg_type;
+
+ if (mixer_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT &&
+ mixer_src_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_SRC_COUNT) {
+ u8 mixer_ch = parser->mixer_ch;
+
+ switch (msg_type) {
+ case MIXER_SRC_GAIN:
+ if (param->mixer.source[mixer_ch].gain[mixer_src_ch] != val) {
+ queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
+ param->mixer.source[mixer_ch].gain[mixer_src_ch] = val;
+ }
+ break;
+ case MIXER_SRC_PAN:
+ if (param->mixer.source[mixer_ch].pan[mixer_src_ch] != val) {
+ queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
+ param->mixer.source[mixer_ch].pan[mixer_src_ch] = val;
+ }
+ break;
+ case MIXER_SRC_FLAG:
+ if (param->mixer.source[mixer_ch].flag[mixer_src_ch] != val) {
+ queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
+ param->mixer.source[mixer_ch].flag[mixer_src_ch] = val;
+ }
+ break;
+ case MIXER_SRC_PAIRED_BALANCE:
+ if (param->mixer.source[mixer_ch].paired_balance[mixer_src_ch] != val) {
+ queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
+ param->mixer.source[mixer_ch].paired_balance[mixer_src_ch] = val;
+ }
+ break;
+ case MIXER_SRC_PAIRED_WIDTH:
+ if (param->mixer.source[mixer_ch].paired_width[mixer_src_ch] != val) {
+ queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
+ param->mixer.source[mixer_ch].paired_width[mixer_src_ch] = val;
+ }
+ break;
+ default:
+ break;
+ }
+
+ parser->mixer_src_ch = mixer_src_ch;
+ }
+ break;
+ }
+ case MIXER_OUTPUT_PAIRED_VOLUME:
+ case MIXER_OUTPUT_PAIRED_FLAG:
+ {
+ struct snd_firewire_motu_register_dsp_parameter *param = &parser->param;
+ u8 mixer_ch = parser->mixer_ch;
+
+ if (mixer_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT) {
+ switch (msg_type) {
+ case MIXER_OUTPUT_PAIRED_VOLUME:
+ if (param->mixer.output.paired_volume[mixer_ch] != val) {
+ queue_event(motu, msg_type, mixer_ch, 0, val);
+ param->mixer.output.paired_volume[mixer_ch] = val;
+ }
+ break;
+ case MIXER_OUTPUT_PAIRED_FLAG:
+ if (param->mixer.output.paired_flag[mixer_ch] != val) {
+ queue_event(motu, msg_type, mixer_ch, 0, val);
+ param->mixer.output.paired_flag[mixer_ch] = val;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ break;
+ }
+ case MAIN_OUTPUT_PAIRED_VOLUME:
+ if (parser->param.output.main_paired_volume != val) {
+ queue_event(motu, msg_type, 0, 0, val);
+ parser->param.output.main_paired_volume = val;
+ }
+ break;
+ case HP_OUTPUT_PAIRED_VOLUME:
+ if (parser->param.output.hp_paired_volume != val) {
+ queue_event(motu, msg_type, 0, 0, val);
+ parser->param.output.hp_paired_volume = val;
+ }
+ break;
+ case HP_OUTPUT_PAIRED_ASSIGNMENT:
+ if (parser->param.output.hp_paired_assignment != val) {
+ queue_event(motu, msg_type, 0, 0, val);
+ parser->param.output.hp_paired_assignment = val;
+ }
+ break;
+ case LINE_INPUT_BOOST:
+ if (parser->param.line_input.boost_flag != val) {
+ queue_event(motu, msg_type, 0, 0, val);
+ parser->param.line_input.boost_flag = val;
+ }
+ break;
+ case LINE_INPUT_NOMINAL_LEVEL:
+ if (parser->param.line_input.nominal_level_flag != val) {
+ queue_event(motu, msg_type, 0, 0, val);
+ parser->param.line_input.nominal_level_flag = val;
+ }
+ break;
+ case INPUT_GAIN_AND_INVERT:
+ case INPUT_FLAG:
+ {
+ struct snd_firewire_motu_register_dsp_parameter *param = &parser->param;
+ u8 input_ch = parser->input_ch;
+
+ if (parser->prev_msg_type != msg_type)
+ input_ch = 0;
+ else
+ ++input_ch;
+
+ if (input_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_INPUT_COUNT) {
+ switch (msg_type) {
+ case INPUT_GAIN_AND_INVERT:
+ if (param->input.gain_and_invert[input_ch] != val) {
+ queue_event(motu, msg_type, input_ch, 0, val);
+ param->input.gain_and_invert[input_ch] = val;
+ }
+ break;
+ case INPUT_FLAG:
+ if (param->input.flag[input_ch] != val) {
+ queue_event(motu, msg_type, input_ch, 0, val);
+ param->input.flag[input_ch] = val;
+ }
+ break;
+ default:
+ break;
+ }
+ parser->input_ch = input_ch;
+ }
+ break;
+ }
+ case UNKNOWN_0:
+ case UNKNOWN_2:
+ break;
+ case METER:
+ {
+ u8 pos;
+
+ if (!meter_pos_quirk)
+ pos = b[MSG_METER_IDX_POS];
+ else
+ pos = b[MSG_METER_IDX_POS_4PRE_AE];
+
+ if (pos < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_INPUT_COUNT) {
+ parser->meter.data[pos] = val;
+ } else if (pos >= 0x80) {
+ pos -= (0x80 - SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_INPUT_COUNT);
+
+ if (pos < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_COUNT)
+ parser->meter.data[pos] = val;
+ }
+
+ // The message for meter is interruptible to the series of other
+ // types of messages. Don't cache it.
+ fallthrough;
+ }
+ case INVALID:
+ default:
+ // Don't cache it.
+ continue;
+ }
+
+ parser->prev_msg_type = msg_type;
+ }
+ }
+
+ if (pos != parser->push_pos)
+ wake_up(&motu->hwdep_wait);
+
+ spin_unlock_irqrestore(&parser->lock, flags);
+}
+
+void snd_motu_register_dsp_message_parser_copy_meter(struct snd_motu *motu,
+ struct snd_firewire_motu_register_dsp_meter *meter)
+{
+ struct msg_parser *parser = motu->message_parser;
+ unsigned long flags;
+
+ spin_lock_irqsave(&parser->lock, flags);
+ memcpy(meter, &parser->meter, sizeof(*meter));
+ spin_unlock_irqrestore(&parser->lock, flags);
+}
+
+void snd_motu_register_dsp_message_parser_copy_parameter(struct snd_motu *motu,
+ struct snd_firewire_motu_register_dsp_parameter *param)
+{
+ struct msg_parser *parser = motu->message_parser;
+ unsigned long flags;
+
+ spin_lock_irqsave(&parser->lock, flags);
+ memcpy(param, &parser->param, sizeof(*param));
+ spin_unlock_irqrestore(&parser->lock, flags);
+}
+
+unsigned int snd_motu_register_dsp_message_parser_count_event(struct snd_motu *motu)
+{
+ struct msg_parser *parser = motu->message_parser;
+
+ if (parser->pull_pos > parser->push_pos)
+ return EVENT_QUEUE_SIZE - parser->pull_pos + parser->push_pos;
+ else
+ return parser->push_pos - parser->pull_pos;
+}
+
+bool snd_motu_register_dsp_message_parser_copy_event(struct snd_motu *motu, u32 *event)
+{
+ struct msg_parser *parser = motu->message_parser;
+ unsigned int pos = parser->pull_pos;
+ unsigned long flags;
+
+ if (pos == parser->push_pos)
+ return false;
+
+ spin_lock_irqsave(&parser->lock, flags);
+
+ *event = parser->event_queue[pos];
+
+ ++pos;
+ if (pos >= EVENT_QUEUE_SIZE)
+ pos = 0;
+ parser->pull_pos = pos;
+
+ spin_unlock_irqrestore(&parser->lock, flags);
+
+ return true;
+}
diff --git a/sound/firewire/motu/motu-stream.c b/sound/firewire/motu/motu-stream.c
new file mode 100644
index 000000000..64aec9c3e
--- /dev/null
+++ b/sound/firewire/motu/motu-stream.c
@@ -0,0 +1,438 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * motu-stream.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+#include "motu.h"
+
+#define READY_TIMEOUT_MS 200
+
+#define ISOC_COMM_CONTROL_OFFSET 0x0b00
+#define ISOC_COMM_CONTROL_MASK 0xffff0000
+#define CHANGE_RX_ISOC_COMM_STATE 0x80000000
+#define RX_ISOC_COMM_IS_ACTIVATED 0x40000000
+#define RX_ISOC_COMM_CHANNEL_MASK 0x3f000000
+#define RX_ISOC_COMM_CHANNEL_SHIFT 24
+#define CHANGE_TX_ISOC_COMM_STATE 0x00800000
+#define TX_ISOC_COMM_IS_ACTIVATED 0x00400000
+#define TX_ISOC_COMM_CHANNEL_MASK 0x003f0000
+#define TX_ISOC_COMM_CHANNEL_SHIFT 16
+
+#define PACKET_FORMAT_OFFSET 0x0b10
+#define TX_PACKET_EXCLUDE_DIFFERED_DATA_CHUNKS 0x00000080
+#define RX_PACKET_EXCLUDE_DIFFERED_DATA_CHUNKS 0x00000040
+#define TX_PACKET_TRANSMISSION_SPEED_MASK 0x0000000f
+
+static int keep_resources(struct snd_motu *motu, unsigned int rate,
+ struct amdtp_stream *stream)
+{
+ struct fw_iso_resources *resources;
+ struct snd_motu_packet_format *packet_format;
+ unsigned int midi_ports = 0;
+ int err;
+
+ if (stream == &motu->rx_stream) {
+ resources = &motu->rx_resources;
+ packet_format = &motu->rx_packet_formats;
+
+ if ((motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_2ND_Q) ||
+ (motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_3RD_Q))
+ midi_ports = 1;
+ } else {
+ resources = &motu->tx_resources;
+ packet_format = &motu->tx_packet_formats;
+
+ if ((motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_2ND_Q) ||
+ (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_3RD_Q))
+ midi_ports = 1;
+ }
+
+ err = amdtp_motu_set_parameters(stream, rate, midi_ports,
+ packet_format);
+ if (err < 0)
+ return err;
+
+ return fw_iso_resources_allocate(resources,
+ amdtp_stream_get_max_payload(stream),
+ fw_parent_device(motu->unit)->max_speed);
+}
+
+static int begin_session(struct snd_motu *motu)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ // Configure the unit to start isochronous communication.
+ err = snd_motu_transaction_read(motu, ISOC_COMM_CONTROL_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg) & ~ISOC_COMM_CONTROL_MASK;
+
+ data |= CHANGE_RX_ISOC_COMM_STATE | RX_ISOC_COMM_IS_ACTIVATED |
+ (motu->rx_resources.channel << RX_ISOC_COMM_CHANNEL_SHIFT) |
+ CHANGE_TX_ISOC_COMM_STATE | TX_ISOC_COMM_IS_ACTIVATED |
+ (motu->tx_resources.channel << TX_ISOC_COMM_CHANNEL_SHIFT);
+
+ reg = cpu_to_be32(data);
+ return snd_motu_transaction_write(motu, ISOC_COMM_CONTROL_OFFSET, &reg,
+ sizeof(reg));
+}
+
+static void finish_session(struct snd_motu *motu)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_protocol_switch_fetching_mode(motu, false);
+ if (err < 0)
+ return;
+
+ err = snd_motu_transaction_read(motu, ISOC_COMM_CONTROL_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return;
+ data = be32_to_cpu(reg);
+
+ data &= ~(RX_ISOC_COMM_IS_ACTIVATED | TX_ISOC_COMM_IS_ACTIVATED);
+ data |= CHANGE_RX_ISOC_COMM_STATE | CHANGE_TX_ISOC_COMM_STATE;
+
+ reg = cpu_to_be32(data);
+ snd_motu_transaction_write(motu, ISOC_COMM_CONTROL_OFFSET, &reg,
+ sizeof(reg));
+}
+
+int snd_motu_stream_cache_packet_formats(struct snd_motu *motu)
+{
+ int err;
+
+ err = snd_motu_protocol_cache_packet_formats(motu);
+ if (err < 0)
+ return err;
+
+ if (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_2ND_Q) {
+ motu->tx_packet_formats.midi_flag_offset = 4;
+ motu->tx_packet_formats.midi_byte_offset = 6;
+ } else if (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_3RD_Q) {
+ motu->tx_packet_formats.midi_flag_offset = 8;
+ motu->tx_packet_formats.midi_byte_offset = 7;
+ }
+
+ if (motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_2ND_Q) {
+ motu->rx_packet_formats.midi_flag_offset = 4;
+ motu->rx_packet_formats.midi_byte_offset = 6;
+ } else if (motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_3RD_Q) {
+ motu->rx_packet_formats.midi_flag_offset = 8;
+ motu->rx_packet_formats.midi_byte_offset = 7;
+ }
+
+ return 0;
+}
+
+int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate,
+ unsigned int frames_per_period,
+ unsigned int frames_per_buffer)
+{
+ unsigned int curr_rate;
+ int err;
+
+ err = snd_motu_protocol_get_clock_rate(motu, &curr_rate);
+ if (err < 0)
+ return err;
+ if (rate == 0)
+ rate = curr_rate;
+
+ if (motu->substreams_counter == 0 || curr_rate != rate) {
+ amdtp_domain_stop(&motu->domain);
+ finish_session(motu);
+
+ fw_iso_resources_free(&motu->tx_resources);
+ fw_iso_resources_free(&motu->rx_resources);
+
+ kfree(motu->cache.event_offsets);
+ motu->cache.event_offsets = NULL;
+
+ err = snd_motu_protocol_set_clock_rate(motu, rate);
+ if (err < 0) {
+ dev_err(&motu->unit->device,
+ "fail to set sampling rate: %d\n", err);
+ return err;
+ }
+
+ err = snd_motu_stream_cache_packet_formats(motu);
+ if (err < 0)
+ return err;
+
+ err = keep_resources(motu, rate, &motu->tx_stream);
+ if (err < 0)
+ return err;
+
+ err = keep_resources(motu, rate, &motu->rx_stream);
+ if (err < 0) {
+ fw_iso_resources_free(&motu->tx_resources);
+ return err;
+ }
+
+ err = amdtp_domain_set_events_per_period(&motu->domain,
+ frames_per_period, frames_per_buffer);
+ if (err < 0) {
+ fw_iso_resources_free(&motu->tx_resources);
+ fw_iso_resources_free(&motu->rx_resources);
+ return err;
+ }
+
+ motu->cache.size = motu->tx_stream.syt_interval * frames_per_buffer;
+ motu->cache.event_offsets = kcalloc(motu->cache.size, sizeof(*motu->cache.event_offsets),
+ GFP_KERNEL);
+ if (!motu->cache.event_offsets) {
+ fw_iso_resources_free(&motu->tx_resources);
+ fw_iso_resources_free(&motu->rx_resources);
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+}
+
+static int ensure_packet_formats(struct snd_motu *motu)
+{
+ __be32 reg;
+ u32 data;
+ int err;
+
+ err = snd_motu_transaction_read(motu, PACKET_FORMAT_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ data = be32_to_cpu(reg);
+
+ data &= ~(TX_PACKET_EXCLUDE_DIFFERED_DATA_CHUNKS |
+ RX_PACKET_EXCLUDE_DIFFERED_DATA_CHUNKS|
+ TX_PACKET_TRANSMISSION_SPEED_MASK);
+ if (motu->spec->tx_fixed_pcm_chunks[0] == motu->tx_packet_formats.pcm_chunks[0])
+ data |= TX_PACKET_EXCLUDE_DIFFERED_DATA_CHUNKS;
+ if (motu->spec->rx_fixed_pcm_chunks[0] == motu->rx_packet_formats.pcm_chunks[0])
+ data |= RX_PACKET_EXCLUDE_DIFFERED_DATA_CHUNKS;
+ data |= fw_parent_device(motu->unit)->max_speed;
+
+ reg = cpu_to_be32(data);
+ return snd_motu_transaction_write(motu, PACKET_FORMAT_OFFSET, &reg,
+ sizeof(reg));
+}
+
+int snd_motu_stream_start_duplex(struct snd_motu *motu)
+{
+ unsigned int generation = motu->rx_resources.generation;
+ int err = 0;
+
+ if (motu->substreams_counter == 0)
+ return 0;
+
+ if (amdtp_streaming_error(&motu->rx_stream) ||
+ amdtp_streaming_error(&motu->tx_stream)) {
+ amdtp_domain_stop(&motu->domain);
+ finish_session(motu);
+ }
+
+ if (generation != fw_parent_device(motu->unit)->card->generation) {
+ err = fw_iso_resources_update(&motu->rx_resources);
+ if (err < 0)
+ return err;
+
+ err = fw_iso_resources_update(&motu->tx_resources);
+ if (err < 0)
+ return err;
+ }
+
+ if (!amdtp_stream_running(&motu->rx_stream)) {
+ int spd = fw_parent_device(motu->unit)->max_speed;
+
+ err = ensure_packet_formats(motu);
+ if (err < 0)
+ return err;
+
+ if (motu->spec->flags & SND_MOTU_SPEC_REGISTER_DSP) {
+ err = snd_motu_register_dsp_message_parser_init(motu);
+ if (err < 0)
+ return err;
+ } else if (motu->spec->flags & SND_MOTU_SPEC_COMMAND_DSP) {
+ err = snd_motu_command_dsp_message_parser_init(motu, motu->tx_stream.sfc);
+ if (err < 0)
+ return err;
+ }
+
+ err = begin_session(motu);
+ if (err < 0) {
+ dev_err(&motu->unit->device,
+ "fail to start isochronous comm: %d\n", err);
+ goto stop_streams;
+ }
+
+ err = amdtp_domain_add_stream(&motu->domain, &motu->tx_stream,
+ motu->tx_resources.channel, spd);
+ if (err < 0)
+ goto stop_streams;
+
+ err = amdtp_domain_add_stream(&motu->domain, &motu->rx_stream,
+ motu->rx_resources.channel, spd);
+ if (err < 0)
+ goto stop_streams;
+
+ motu->cache.tail = 0;
+ motu->cache.tx_cycle_count = UINT_MAX;
+ motu->cache.head = 0;
+ motu->cache.rx_cycle_count = UINT_MAX;
+
+ // NOTE: The device requires both of replay; the sequence of the number of data
+ // blocks per packet, and the sequence of source packet header per data block as
+ // presentation time.
+ err = amdtp_domain_start(&motu->domain, 0, true, false);
+ if (err < 0)
+ goto stop_streams;
+
+ if (!amdtp_domain_wait_ready(&motu->domain, READY_TIMEOUT_MS)) {
+ err = -ETIMEDOUT;
+ goto stop_streams;
+ }
+
+ err = snd_motu_protocol_switch_fetching_mode(motu, true);
+ if (err < 0) {
+ dev_err(&motu->unit->device,
+ "fail to enable frame fetching: %d\n", err);
+ goto stop_streams;
+ }
+ }
+
+ return 0;
+
+stop_streams:
+ amdtp_domain_stop(&motu->domain);
+ finish_session(motu);
+ return err;
+}
+
+void snd_motu_stream_stop_duplex(struct snd_motu *motu)
+{
+ if (motu->substreams_counter == 0) {
+ amdtp_domain_stop(&motu->domain);
+ finish_session(motu);
+
+ fw_iso_resources_free(&motu->tx_resources);
+ fw_iso_resources_free(&motu->rx_resources);
+
+ kfree(motu->cache.event_offsets);
+ motu->cache.event_offsets = NULL;
+ }
+}
+
+static int init_stream(struct snd_motu *motu, struct amdtp_stream *s)
+{
+ struct fw_iso_resources *resources;
+ enum amdtp_stream_direction dir;
+ int err;
+
+ if (s == &motu->tx_stream) {
+ resources = &motu->tx_resources;
+ dir = AMDTP_IN_STREAM;
+ } else {
+ resources = &motu->rx_resources;
+ dir = AMDTP_OUT_STREAM;
+ }
+
+ err = fw_iso_resources_init(resources, motu->unit);
+ if (err < 0)
+ return err;
+
+ err = amdtp_motu_init(s, motu->unit, dir, motu->spec, &motu->cache);
+ if (err < 0)
+ fw_iso_resources_destroy(resources);
+
+ return err;
+}
+
+static void destroy_stream(struct snd_motu *motu, struct amdtp_stream *s)
+{
+ amdtp_stream_destroy(s);
+
+ if (s == &motu->tx_stream)
+ fw_iso_resources_destroy(&motu->tx_resources);
+ else
+ fw_iso_resources_destroy(&motu->rx_resources);
+}
+
+int snd_motu_stream_init_duplex(struct snd_motu *motu)
+{
+ int err;
+
+ err = init_stream(motu, &motu->tx_stream);
+ if (err < 0)
+ return err;
+
+ err = init_stream(motu, &motu->rx_stream);
+ if (err < 0) {
+ destroy_stream(motu, &motu->tx_stream);
+ return err;
+ }
+
+ err = amdtp_domain_init(&motu->domain);
+ if (err < 0) {
+ destroy_stream(motu, &motu->tx_stream);
+ destroy_stream(motu, &motu->rx_stream);
+ }
+
+ return err;
+}
+
+// This function should be called before starting streams or after stopping
+// streams.
+void snd_motu_stream_destroy_duplex(struct snd_motu *motu)
+{
+ amdtp_domain_destroy(&motu->domain);
+
+ destroy_stream(motu, &motu->rx_stream);
+ destroy_stream(motu, &motu->tx_stream);
+
+ motu->substreams_counter = 0;
+}
+
+static void motu_lock_changed(struct snd_motu *motu)
+{
+ motu->dev_lock_changed = true;
+ wake_up(&motu->hwdep_wait);
+}
+
+int snd_motu_stream_lock_try(struct snd_motu *motu)
+{
+ int err;
+
+ spin_lock_irq(&motu->lock);
+
+ if (motu->dev_lock_count < 0) {
+ err = -EBUSY;
+ goto out;
+ }
+
+ if (motu->dev_lock_count++ == 0)
+ motu_lock_changed(motu);
+ err = 0;
+out:
+ spin_unlock_irq(&motu->lock);
+ return err;
+}
+
+void snd_motu_stream_lock_release(struct snd_motu *motu)
+{
+ spin_lock_irq(&motu->lock);
+
+ if (WARN_ON(motu->dev_lock_count <= 0))
+ goto out;
+
+ if (--motu->dev_lock_count == 0)
+ motu_lock_changed(motu);
+out:
+ spin_unlock_irq(&motu->lock);
+}
diff --git a/sound/firewire/motu/motu-transaction.c b/sound/firewire/motu/motu-transaction.c
new file mode 100644
index 000000000..2dc1d6e59
--- /dev/null
+++ b/sound/firewire/motu/motu-transaction.c
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * motu-transaction.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+
+#include "motu.h"
+
+#define SND_MOTU_ADDR_BASE 0xfffff0000000ULL
+#define ASYNC_ADDR_HI 0x0b04
+#define ASYNC_ADDR_LO 0x0b08
+
+int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg,
+ size_t size)
+{
+ int tcode;
+
+ if (size % sizeof(__be32) > 0 || size <= 0)
+ return -EINVAL;
+ if (size == sizeof(__be32))
+ tcode = TCODE_READ_QUADLET_REQUEST;
+ else
+ tcode = TCODE_READ_BLOCK_REQUEST;
+
+ return snd_fw_transaction(motu->unit, tcode,
+ SND_MOTU_ADDR_BASE + offset, reg, size, 0);
+}
+
+int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg,
+ size_t size)
+{
+ int tcode;
+
+ if (size % sizeof(__be32) > 0 || size <= 0)
+ return -EINVAL;
+ if (size == sizeof(__be32))
+ tcode = TCODE_WRITE_QUADLET_REQUEST;
+ else
+ tcode = TCODE_WRITE_BLOCK_REQUEST;
+
+ return snd_fw_transaction(motu->unit, tcode,
+ SND_MOTU_ADDR_BASE + offset, reg, size, 0);
+}
+
+static void handle_message(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_motu *motu = callback_data;
+ __be32 *buf = (__be32 *)data;
+ unsigned long flags;
+
+ if (tcode != TCODE_WRITE_QUADLET_REQUEST) {
+ fw_send_response(card, request, RCODE_COMPLETE);
+ return;
+ }
+
+ if (offset != motu->async_handler.offset || length != 4) {
+ fw_send_response(card, request, RCODE_ADDRESS_ERROR);
+ return;
+ }
+
+ spin_lock_irqsave(&motu->lock, flags);
+ motu->msg = be32_to_cpu(*buf);
+ spin_unlock_irqrestore(&motu->lock, flags);
+
+ fw_send_response(card, request, RCODE_COMPLETE);
+
+ wake_up(&motu->hwdep_wait);
+}
+
+int snd_motu_transaction_reregister(struct snd_motu *motu)
+{
+ struct fw_device *device = fw_parent_device(motu->unit);
+ __be32 data;
+ int err;
+
+ if (motu->async_handler.callback_data == NULL)
+ return -EINVAL;
+
+ /* Register messaging address. Block transaction is not allowed. */
+ data = cpu_to_be32((device->card->node_id << 16) |
+ (motu->async_handler.offset >> 32));
+ err = snd_motu_transaction_write(motu, ASYNC_ADDR_HI, &data,
+ sizeof(data));
+ if (err < 0)
+ return err;
+
+ data = cpu_to_be32(motu->async_handler.offset);
+ return snd_motu_transaction_write(motu, ASYNC_ADDR_LO, &data,
+ sizeof(data));
+}
+
+int snd_motu_transaction_register(struct snd_motu *motu)
+{
+ static const struct fw_address_region resp_register_region = {
+ .start = 0xffffe0000000ull,
+ .end = 0xffffe000ffffull,
+ };
+ int err;
+
+ /* Perhaps, 4 byte messages are transferred. */
+ motu->async_handler.length = 4;
+ motu->async_handler.address_callback = handle_message;
+ motu->async_handler.callback_data = motu;
+
+ err = fw_core_add_address_handler(&motu->async_handler,
+ &resp_register_region);
+ if (err < 0)
+ return err;
+
+ err = snd_motu_transaction_reregister(motu);
+ if (err < 0) {
+ fw_core_remove_address_handler(&motu->async_handler);
+ motu->async_handler.address_callback = NULL;
+ }
+
+ return err;
+}
+
+void snd_motu_transaction_unregister(struct snd_motu *motu)
+{
+ __be32 data;
+
+ if (motu->async_handler.address_callback != NULL)
+ fw_core_remove_address_handler(&motu->async_handler);
+ motu->async_handler.address_callback = NULL;
+
+ /* Unregister the address. */
+ data = cpu_to_be32(0x00000000);
+ snd_motu_transaction_write(motu, ASYNC_ADDR_HI, &data, sizeof(data));
+ snd_motu_transaction_write(motu, ASYNC_ADDR_LO, &data, sizeof(data));
+}
diff --git a/sound/firewire/motu/motu.c b/sound/firewire/motu/motu.c
new file mode 100644
index 000000000..f8b7fe387
--- /dev/null
+++ b/sound/firewire/motu/motu.c
@@ -0,0 +1,205 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * motu.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+#include "motu.h"
+
+#define OUI_MOTU 0x0001f2
+
+MODULE_DESCRIPTION("MOTU FireWire driver");
+MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
+MODULE_LICENSE("GPL v2");
+
+const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT] = {
+ /* mode 0 */
+ [0] = 44100,
+ [1] = 48000,
+ /* mode 1 */
+ [2] = 88200,
+ [3] = 96000,
+ /* mode 2 */
+ [4] = 176400,
+ [5] = 192000,
+};
+
+static void name_card(struct snd_motu *motu)
+{
+ struct fw_device *fw_dev = fw_parent_device(motu->unit);
+ struct fw_csr_iterator it;
+ int key, val;
+ u32 version = 0;
+
+ fw_csr_iterator_init(&it, motu->unit->directory);
+ while (fw_csr_iterator_next(&it, &key, &val)) {
+ switch (key) {
+ case CSR_MODEL:
+ version = val;
+ break;
+ }
+ }
+
+ strcpy(motu->card->driver, "FW-MOTU");
+ strcpy(motu->card->shortname, motu->spec->name);
+ strcpy(motu->card->mixername, motu->spec->name);
+ snprintf(motu->card->longname, sizeof(motu->card->longname),
+ "MOTU %s (version:%06x), GUID %08x%08x at %s, S%d",
+ motu->spec->name, version,
+ fw_dev->config_rom[3], fw_dev->config_rom[4],
+ dev_name(&motu->unit->device), 100 << fw_dev->max_speed);
+}
+
+static void motu_card_free(struct snd_card *card)
+{
+ struct snd_motu *motu = card->private_data;
+
+ snd_motu_transaction_unregister(motu);
+ snd_motu_stream_destroy_duplex(motu);
+
+ mutex_destroy(&motu->mutex);
+ fw_unit_put(motu->unit);
+}
+
+static int motu_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry)
+{
+ struct snd_card *card;
+ struct snd_motu *motu;
+ int err;
+
+ err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*motu), &card);
+ if (err < 0)
+ return err;
+ card->private_free = motu_card_free;
+
+ motu = card->private_data;
+ motu->unit = fw_unit_get(unit);
+ dev_set_drvdata(&unit->device, motu);
+ motu->card = card;
+
+ motu->spec = (const struct snd_motu_spec *)entry->driver_data;
+ mutex_init(&motu->mutex);
+ spin_lock_init(&motu->lock);
+ init_waitqueue_head(&motu->hwdep_wait);
+
+ name_card(motu);
+
+ err = snd_motu_transaction_register(motu);
+ if (err < 0)
+ goto error;
+
+ err = snd_motu_stream_init_duplex(motu);
+ if (err < 0)
+ goto error;
+
+ snd_motu_proc_init(motu);
+
+ err = snd_motu_create_pcm_devices(motu);
+ if (err < 0)
+ goto error;
+
+ if ((motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_2ND_Q) ||
+ (motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_3RD_Q) ||
+ (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_2ND_Q) ||
+ (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_3RD_Q)) {
+ err = snd_motu_create_midi_devices(motu);
+ if (err < 0)
+ goto error;
+ }
+
+ err = snd_motu_create_hwdep_device(motu);
+ if (err < 0)
+ goto error;
+
+ if (motu->spec->flags & SND_MOTU_SPEC_REGISTER_DSP) {
+ err = snd_motu_register_dsp_message_parser_new(motu);
+ if (err < 0)
+ goto error;
+ } else if (motu->spec->flags & SND_MOTU_SPEC_COMMAND_DSP) {
+ err = snd_motu_command_dsp_message_parser_new(motu);
+ 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 motu_remove(struct fw_unit *unit)
+{
+ struct snd_motu *motu = dev_get_drvdata(&unit->device);
+
+ // Block till all of ALSA character devices are released.
+ snd_card_free(motu->card);
+}
+
+static void motu_bus_update(struct fw_unit *unit)
+{
+ struct snd_motu *motu = dev_get_drvdata(&unit->device);
+
+ /* The handler address register becomes initialized. */
+ snd_motu_transaction_reregister(motu);
+}
+
+#define SND_MOTU_DEV_ENTRY(model, data) \
+{ \
+ .match_flags = IEEE1394_MATCH_VENDOR_ID | \
+ IEEE1394_MATCH_SPECIFIER_ID | \
+ IEEE1394_MATCH_VERSION, \
+ .vendor_id = OUI_MOTU, \
+ .specifier_id = OUI_MOTU, \
+ .version = model, \
+ .driver_data = (kernel_ulong_t)data, \
+}
+
+static const struct ieee1394_device_id motu_id_table[] = {
+ SND_MOTU_DEV_ENTRY(0x000001, &snd_motu_spec_828),
+ SND_MOTU_DEV_ENTRY(0x000002, &snd_motu_spec_896),
+ SND_MOTU_DEV_ENTRY(0x000003, &snd_motu_spec_828mk2),
+ SND_MOTU_DEV_ENTRY(0x000005, &snd_motu_spec_896hd),
+ SND_MOTU_DEV_ENTRY(0x000009, &snd_motu_spec_traveler),
+ SND_MOTU_DEV_ENTRY(0x00000d, &snd_motu_spec_ultralite),
+ SND_MOTU_DEV_ENTRY(0x00000f, &snd_motu_spec_8pre),
+ SND_MOTU_DEV_ENTRY(0x000015, &snd_motu_spec_828mk3_fw), // FireWire only.
+ SND_MOTU_DEV_ENTRY(0x000019, &snd_motu_spec_ultralite_mk3), // FireWire only.
+ SND_MOTU_DEV_ENTRY(0x00001b, &snd_motu_spec_traveler_mk3),
+ SND_MOTU_DEV_ENTRY(0x000030, &snd_motu_spec_ultralite_mk3), // Hybrid.
+ SND_MOTU_DEV_ENTRY(0x000035, &snd_motu_spec_828mk3_hybrid), // Hybrid.
+ SND_MOTU_DEV_ENTRY(0x000033, &snd_motu_spec_audio_express),
+ SND_MOTU_DEV_ENTRY(0x000039, &snd_motu_spec_track16),
+ SND_MOTU_DEV_ENTRY(0x000045, &snd_motu_spec_4pre),
+ { }
+};
+MODULE_DEVICE_TABLE(ieee1394, motu_id_table);
+
+static struct fw_driver motu_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = KBUILD_MODNAME,
+ .bus = &fw_bus_type,
+ },
+ .probe = motu_probe,
+ .update = motu_bus_update,
+ .remove = motu_remove,
+ .id_table = motu_id_table,
+};
+
+static int __init alsa_motu_init(void)
+{
+ return driver_register(&motu_driver.driver);
+}
+
+static void __exit alsa_motu_exit(void)
+{
+ driver_unregister(&motu_driver.driver);
+}
+
+module_init(alsa_motu_init);
+module_exit(alsa_motu_exit);
diff --git a/sound/firewire/motu/motu.h b/sound/firewire/motu/motu.h
new file mode 100644
index 000000000..4189f2192
--- /dev/null
+++ b/sound/firewire/motu/motu.h
@@ -0,0 +1,298 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * motu.h - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ */
+
+#ifndef SOUND_FIREWIRE_MOTU_H_INCLUDED
+#define SOUND_FIREWIRE_MOTU_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/control.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/info.h>
+#include <sound/rawmidi.h>
+#include <sound/firewire.h>
+#include <sound/hwdep.h>
+
+#include "../lib.h"
+#include "../amdtp-stream.h"
+#include "../iso-resources.h"
+
+struct snd_motu_packet_format {
+ unsigned char midi_flag_offset;
+ unsigned char midi_byte_offset;
+ unsigned char pcm_byte_offset;
+
+ unsigned char msg_chunks;
+ unsigned char pcm_chunks[3];
+};
+
+struct amdtp_motu_cache {
+ unsigned int *event_offsets;
+ unsigned int size;
+ unsigned int tail;
+ unsigned int tx_cycle_count;
+ unsigned int head;
+ unsigned int rx_cycle_count;
+};
+
+struct snd_motu {
+ struct snd_card *card;
+ struct fw_unit *unit;
+ struct mutex mutex;
+ spinlock_t lock;
+
+ /* Model dependent information. */
+ const struct snd_motu_spec *spec;
+
+ /* For packet streaming */
+ struct snd_motu_packet_format tx_packet_formats;
+ struct snd_motu_packet_format rx_packet_formats;
+ struct amdtp_stream tx_stream;
+ struct amdtp_stream rx_stream;
+ struct fw_iso_resources tx_resources;
+ struct fw_iso_resources rx_resources;
+ unsigned int substreams_counter;
+
+ /* For notification. */
+ struct fw_address_handler async_handler;
+ u32 msg;
+
+ /* For uapi */
+ int dev_lock_count;
+ bool dev_lock_changed;
+ wait_queue_head_t hwdep_wait;
+ struct snd_hwdep *hwdep;
+
+ struct amdtp_domain domain;
+
+ struct amdtp_motu_cache cache;
+
+ void *message_parser;
+};
+
+enum snd_motu_spec_flags {
+ SND_MOTU_SPEC_RX_MIDI_2ND_Q = 0x0001,
+ SND_MOTU_SPEC_RX_MIDI_3RD_Q = 0x0002,
+ SND_MOTU_SPEC_TX_MIDI_2ND_Q = 0x0004,
+ SND_MOTU_SPEC_TX_MIDI_3RD_Q = 0x0008,
+ SND_MOTU_SPEC_REGISTER_DSP = 0x0010,
+ SND_MOTU_SPEC_COMMAND_DSP = 0x0020,
+};
+
+#define SND_MOTU_CLOCK_RATE_COUNT 6
+extern const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT];
+
+enum snd_motu_clock_source {
+ SND_MOTU_CLOCK_SOURCE_INTERNAL,
+ SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB,
+ SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT,
+ SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A,
+ SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B,
+ SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT,
+ SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A,
+ SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B,
+ SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX,
+ SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR,
+ SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC,
+ SND_MOTU_CLOCK_SOURCE_SPH,
+ SND_MOTU_CLOCK_SOURCE_UNKNOWN,
+};
+
+enum snd_motu_protocol_version {
+ SND_MOTU_PROTOCOL_V1,
+ SND_MOTU_PROTOCOL_V2,
+ SND_MOTU_PROTOCOL_V3,
+};
+
+struct snd_motu_spec {
+ const char *const name;
+ enum snd_motu_protocol_version protocol_version;
+ // The combination of snd_motu_spec_flags enumeration-constants.
+ unsigned int flags;
+
+ unsigned char tx_fixed_pcm_chunks[3];
+ unsigned char rx_fixed_pcm_chunks[3];
+};
+
+extern const struct snd_motu_spec snd_motu_spec_828;
+extern const struct snd_motu_spec snd_motu_spec_896;
+
+extern const struct snd_motu_spec snd_motu_spec_828mk2;
+extern const struct snd_motu_spec snd_motu_spec_896hd;
+extern const struct snd_motu_spec snd_motu_spec_traveler;
+extern const struct snd_motu_spec snd_motu_spec_ultralite;
+extern const struct snd_motu_spec snd_motu_spec_8pre;
+
+extern const struct snd_motu_spec snd_motu_spec_828mk3_fw;
+extern const struct snd_motu_spec snd_motu_spec_828mk3_hybrid;
+extern const struct snd_motu_spec snd_motu_spec_traveler_mk3;
+extern const struct snd_motu_spec snd_motu_spec_ultralite_mk3;
+extern const struct snd_motu_spec snd_motu_spec_audio_express;
+extern const struct snd_motu_spec snd_motu_spec_track16;
+extern const struct snd_motu_spec snd_motu_spec_4pre;
+
+int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
+ enum amdtp_stream_direction dir,
+ const struct snd_motu_spec *spec,
+ struct amdtp_motu_cache *cache);
+int amdtp_motu_set_parameters(struct amdtp_stream *s, unsigned int rate,
+ unsigned int midi_ports,
+ struct snd_motu_packet_format *formats);
+int amdtp_motu_add_pcm_hw_constraints(struct amdtp_stream *s,
+ struct snd_pcm_runtime *runtime);
+void amdtp_motu_midi_trigger(struct amdtp_stream *s, unsigned int port,
+ struct snd_rawmidi_substream *midi);
+
+int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg,
+ size_t size);
+int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg,
+ size_t size);
+int snd_motu_transaction_register(struct snd_motu *motu);
+int snd_motu_transaction_reregister(struct snd_motu *motu);
+void snd_motu_transaction_unregister(struct snd_motu *motu);
+
+int snd_motu_stream_init_duplex(struct snd_motu *motu);
+void snd_motu_stream_destroy_duplex(struct snd_motu *motu);
+int snd_motu_stream_cache_packet_formats(struct snd_motu *motu);
+int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate,
+ unsigned int frames_per_period,
+ unsigned int frames_per_buffer);
+int snd_motu_stream_start_duplex(struct snd_motu *motu);
+void snd_motu_stream_stop_duplex(struct snd_motu *motu);
+int snd_motu_stream_lock_try(struct snd_motu *motu);
+void snd_motu_stream_lock_release(struct snd_motu *motu);
+
+void snd_motu_proc_init(struct snd_motu *motu);
+
+int snd_motu_create_pcm_devices(struct snd_motu *motu);
+
+int snd_motu_create_midi_devices(struct snd_motu *motu);
+
+int snd_motu_create_hwdep_device(struct snd_motu *motu);
+
+int snd_motu_protocol_v1_get_clock_rate(struct snd_motu *motu,
+ unsigned int *rate);
+int snd_motu_protocol_v1_set_clock_rate(struct snd_motu *motu,
+ unsigned int rate);
+int snd_motu_protocol_v1_get_clock_source(struct snd_motu *motu,
+ enum snd_motu_clock_source *src);
+int snd_motu_protocol_v1_switch_fetching_mode(struct snd_motu *motu,
+ bool enable);
+int snd_motu_protocol_v1_cache_packet_formats(struct snd_motu *motu);
+
+int snd_motu_protocol_v2_get_clock_rate(struct snd_motu *motu,
+ unsigned int *rate);
+int snd_motu_protocol_v2_set_clock_rate(struct snd_motu *motu,
+ unsigned int rate);
+int snd_motu_protocol_v2_get_clock_source(struct snd_motu *motu,
+ enum snd_motu_clock_source *src);
+int snd_motu_protocol_v2_switch_fetching_mode(struct snd_motu *motu,
+ bool enable);
+int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu);
+
+int snd_motu_protocol_v3_get_clock_rate(struct snd_motu *motu,
+ unsigned int *rate);
+int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu,
+ unsigned int rate);
+int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu,
+ enum snd_motu_clock_source *src);
+int snd_motu_protocol_v3_switch_fetching_mode(struct snd_motu *motu,
+ bool enable);
+int snd_motu_protocol_v3_cache_packet_formats(struct snd_motu *motu);
+
+static inline int snd_motu_protocol_get_clock_rate(struct snd_motu *motu,
+ unsigned int *rate)
+{
+ if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
+ return snd_motu_protocol_v2_get_clock_rate(motu, rate);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
+ return snd_motu_protocol_v3_get_clock_rate(motu, rate);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
+ return snd_motu_protocol_v1_get_clock_rate(motu, rate);
+ else
+ return -ENXIO;
+}
+
+static inline int snd_motu_protocol_set_clock_rate(struct snd_motu *motu,
+ unsigned int rate)
+{
+ if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
+ return snd_motu_protocol_v2_set_clock_rate(motu, rate);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
+ return snd_motu_protocol_v3_set_clock_rate(motu, rate);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
+ return snd_motu_protocol_v1_set_clock_rate(motu, rate);
+ else
+ return -ENXIO;
+}
+
+static inline int snd_motu_protocol_get_clock_source(struct snd_motu *motu,
+ enum snd_motu_clock_source *source)
+{
+ if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
+ return snd_motu_protocol_v2_get_clock_source(motu, source);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
+ return snd_motu_protocol_v3_get_clock_source(motu, source);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
+ return snd_motu_protocol_v1_get_clock_source(motu, source);
+ else
+ return -ENXIO;
+}
+
+static inline int snd_motu_protocol_switch_fetching_mode(struct snd_motu *motu,
+ bool enable)
+{
+ if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
+ return snd_motu_protocol_v2_switch_fetching_mode(motu, enable);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
+ return snd_motu_protocol_v3_switch_fetching_mode(motu, enable);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
+ return snd_motu_protocol_v1_switch_fetching_mode(motu, enable);
+ else
+ return -ENXIO;
+}
+
+static inline int snd_motu_protocol_cache_packet_formats(struct snd_motu *motu)
+{
+ if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
+ return snd_motu_protocol_v2_cache_packet_formats(motu);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
+ return snd_motu_protocol_v3_cache_packet_formats(motu);
+ else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
+ return snd_motu_protocol_v1_cache_packet_formats(motu);
+ else
+ return -ENXIO;
+}
+
+int snd_motu_register_dsp_message_parser_new(struct snd_motu *motu);
+int snd_motu_register_dsp_message_parser_init(struct snd_motu *motu);
+void snd_motu_register_dsp_message_parser_parse(struct snd_motu *motu, const struct pkt_desc *descs,
+ unsigned int desc_count, unsigned int data_block_quadlets);
+void snd_motu_register_dsp_message_parser_copy_meter(struct snd_motu *motu,
+ struct snd_firewire_motu_register_dsp_meter *meter);
+void snd_motu_register_dsp_message_parser_copy_parameter(struct snd_motu *motu,
+ struct snd_firewire_motu_register_dsp_parameter *params);
+unsigned int snd_motu_register_dsp_message_parser_count_event(struct snd_motu *motu);
+bool snd_motu_register_dsp_message_parser_copy_event(struct snd_motu *motu, u32 *event);
+
+int snd_motu_command_dsp_message_parser_new(struct snd_motu *motu);
+int snd_motu_command_dsp_message_parser_init(struct snd_motu *motu, enum cip_sfc sfc);
+void snd_motu_command_dsp_message_parser_parse(struct snd_motu *motu, const struct pkt_desc *descs,
+ unsigned int desc_count, unsigned int data_block_quadlets);
+void snd_motu_command_dsp_message_parser_copy_meter(struct snd_motu *motu,
+ struct snd_firewire_motu_command_dsp_meter *meter);
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 07:54:02 +0000