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/*
* motu.h - a part of driver for MOTU FireWire series
*
* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
*
* Licensed under the terms of the GNU General Public License, version 2.
*/
#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 fixed_part_pcm_chunks[3];
unsigned char differed_part_pcm_chunks[3];
};
struct snd_motu {
struct snd_card *card;
struct fw_unit *unit;
struct mutex mutex;
spinlock_t lock;
bool registered;
struct delayed_work dwork;
/* 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 capture_substreams;
unsigned int playback_substreams;
/* 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;
};
enum snd_motu_spec_flags {
SND_MOTU_SPEC_SUPPORT_CLOCK_X2 = 0x0001,
SND_MOTU_SPEC_SUPPORT_CLOCK_X4 = 0x0002,
SND_MOTU_SPEC_TX_MICINST_CHUNK = 0x0004,
SND_MOTU_SPEC_TX_RETURN_CHUNK = 0x0008,
SND_MOTU_SPEC_TX_REVERB_CHUNK = 0x0010,
SND_MOTU_SPEC_TX_AESEBU_CHUNK = 0x0020,
SND_MOTU_SPEC_HAS_OPT_IFACE_A = 0x0040,
SND_MOTU_SPEC_HAS_OPT_IFACE_B = 0x0080,
SND_MOTU_SPEC_RX_MIDI_2ND_Q = 0x0100,
SND_MOTU_SPEC_RX_MIDI_3RD_Q = 0x0200,
SND_MOTU_SPEC_TX_MIDI_2ND_Q = 0x0400,
SND_MOTU_SPEC_TX_MIDI_3RD_Q = 0x0800,
};
#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_UNKNOWN,
};
struct snd_motu_protocol {
int (*get_clock_rate)(struct snd_motu *motu, unsigned int *rate);
int (*set_clock_rate)(struct snd_motu *motu, unsigned int rate);
int (*get_clock_source)(struct snd_motu *motu,
enum snd_motu_clock_source *source);
int (*switch_fetching_mode)(struct snd_motu *motu, bool enable);
int (*cache_packet_formats)(struct snd_motu *motu);
};
struct snd_motu_spec {
const char *const name;
enum snd_motu_spec_flags flags;
unsigned char analog_in_ports;
unsigned char analog_out_ports;
const struct snd_motu_protocol *const protocol;
};
extern const struct snd_motu_protocol snd_motu_protocol_v2;
extern const struct snd_motu_protocol snd_motu_protocol_v3;
int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
enum amdtp_stream_direction dir,
const struct snd_motu_protocol *const protocol);
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_start_duplex(struct snd_motu *motu, unsigned int rate);
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);
#endif
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