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In protocols of MOTU FireWire series, when transferring MIDI messages, transmitter set existence flag to one byte on first several quadlets. The position differs depending on protocols and models, however two cases are confirmed; in 5th byte and 8th byte from MSB side. This commit adds a series of specification flag to describe them. When the existence flag is in the 5th byte, SND_MOTU_SPEC_[R|T]X_MIDI_2ND_Q is used. Else, another set of the flag is used. Here, '_Q' means quadlet. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
165 lines
5.1 KiB
C
165 lines
5.1 KiB
C
/*
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* motu.h - a part of driver for MOTU FireWire series
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*
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* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#ifndef SOUND_FIREWIRE_MOTU_H_INCLUDED
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#define SOUND_FIREWIRE_MOTU_H_INCLUDED
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#include <linux/device.h>
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#include <linux/firewire.h>
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#include <linux/firewire-constants.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/compat.h>
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#include <linux/sched/signal.h>
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#include <sound/control.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/info.h>
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#include <sound/rawmidi.h>
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#include <sound/firewire.h>
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#include <sound/hwdep.h>
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#include "../lib.h"
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#include "../amdtp-stream.h"
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#include "../iso-resources.h"
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struct snd_motu_packet_format {
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unsigned char midi_flag_offset;
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unsigned char midi_byte_offset;
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unsigned char pcm_byte_offset;
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unsigned char msg_chunks;
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unsigned char fixed_part_pcm_chunks[3];
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unsigned char differed_part_pcm_chunks[3];
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};
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struct snd_motu {
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struct snd_card *card;
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struct fw_unit *unit;
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struct mutex mutex;
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spinlock_t lock;
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bool registered;
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struct delayed_work dwork;
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/* Model dependent information. */
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const struct snd_motu_spec *spec;
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/* For packet streaming */
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struct snd_motu_packet_format tx_packet_formats;
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struct snd_motu_packet_format rx_packet_formats;
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struct amdtp_stream tx_stream;
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struct amdtp_stream rx_stream;
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struct fw_iso_resources tx_resources;
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struct fw_iso_resources rx_resources;
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unsigned int capture_substreams;
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unsigned int playback_substreams;
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/* For notification. */
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struct fw_address_handler async_handler;
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u32 msg;
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/* For uapi */
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int dev_lock_count;
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bool dev_lock_changed;
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wait_queue_head_t hwdep_wait;
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};
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enum snd_motu_spec_flags {
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SND_MOTU_SPEC_SUPPORT_CLOCK_X2 = 0x0001,
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SND_MOTU_SPEC_SUPPORT_CLOCK_X4 = 0x0002,
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SND_MOTU_SPEC_TX_MICINST_CHUNK = 0x0004,
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SND_MOTU_SPEC_TX_RETURN_CHUNK = 0x0008,
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SND_MOTU_SPEC_TX_REVERB_CHUNK = 0x0010,
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SND_MOTU_SPEC_TX_AESEBU_CHUNK = 0x0020,
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SND_MOTU_SPEC_HAS_OPT_IFACE_A = 0x0040,
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SND_MOTU_SPEC_HAS_OPT_IFACE_B = 0x0080,
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SND_MOTU_SPEC_RX_MIDI_2ND_Q = 0x0100,
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SND_MOTU_SPEC_RX_MIDI_3RD_Q = 0x0200,
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SND_MOTU_SPEC_TX_MIDI_2ND_Q = 0x0400,
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SND_MOTU_SPEC_TX_MIDI_3RD_Q = 0x0800,
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};
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#define SND_MOTU_CLOCK_RATE_COUNT 6
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extern const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT];
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enum snd_motu_clock_source {
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SND_MOTU_CLOCK_SOURCE_INTERNAL,
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SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB,
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SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT,
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SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A,
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SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B,
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SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT,
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SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A,
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SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B,
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SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX,
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SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR,
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SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC,
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SND_MOTU_CLOCK_SOURCE_UNKNOWN,
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};
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struct snd_motu_protocol {
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int (*get_clock_rate)(struct snd_motu *motu, unsigned int *rate);
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int (*set_clock_rate)(struct snd_motu *motu, unsigned int rate);
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int (*get_clock_source)(struct snd_motu *motu,
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enum snd_motu_clock_source *source);
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int (*switch_fetching_mode)(struct snd_motu *motu, bool enable);
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int (*cache_packet_formats)(struct snd_motu *motu);
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};
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struct snd_motu_spec {
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const char *const name;
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enum snd_motu_spec_flags flags;
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unsigned char analog_in_ports;
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unsigned char analog_out_ports;
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const struct snd_motu_protocol *const protocol;
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};
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extern const struct snd_motu_protocol snd_motu_protocol_v2;
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extern const struct snd_motu_protocol snd_motu_protocol_v3;
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int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
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enum amdtp_stream_direction dir,
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const struct snd_motu_protocol *const protocol);
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int amdtp_motu_set_parameters(struct amdtp_stream *s, unsigned int rate,
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unsigned int midi_ports,
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struct snd_motu_packet_format *formats);
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int amdtp_motu_add_pcm_hw_constraints(struct amdtp_stream *s,
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struct snd_pcm_runtime *runtime);
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void amdtp_motu_midi_trigger(struct amdtp_stream *s, unsigned int port,
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struct snd_rawmidi_substream *midi);
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int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg,
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size_t size);
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int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg,
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size_t size);
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int snd_motu_transaction_register(struct snd_motu *motu);
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int snd_motu_transaction_reregister(struct snd_motu *motu);
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void snd_motu_transaction_unregister(struct snd_motu *motu);
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int snd_motu_stream_init_duplex(struct snd_motu *motu);
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void snd_motu_stream_destroy_duplex(struct snd_motu *motu);
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int snd_motu_stream_cache_packet_formats(struct snd_motu *motu);
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int snd_motu_stream_start_duplex(struct snd_motu *motu, unsigned int rate);
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void snd_motu_stream_stop_duplex(struct snd_motu *motu);
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int snd_motu_stream_lock_try(struct snd_motu *motu);
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void snd_motu_stream_lock_release(struct snd_motu *motu);
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void snd_motu_proc_init(struct snd_motu *motu);
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int snd_motu_create_pcm_devices(struct snd_motu *motu);
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int snd_motu_create_midi_devices(struct snd_motu *motu);
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int snd_motu_create_hwdep_device(struct snd_motu *motu);
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#endif
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