sound/firewire/motu/motu.h - linux - Git at Google

 /* 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 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 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 amdtp_domain domain;
 };

 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,
 };

 #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_V2,
 	SND_MOTU_PROTOCOL_V3,
 };

 struct snd_motu_spec {
 	const char *const name;
 	enum snd_motu_protocol_version protocol_version;
 	enum snd_motu_spec_flags flags;

 	unsigned char tx_fixed_pcm_chunks[3];
 	unsigned char rx_fixed_pcm_chunks[3];
 };

 extern const struct snd_motu_spec snd_motu_spec_828mk2;
 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;
 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_4pre;

 int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
 		    enum amdtp_stream_direction dir,
 		    const struct snd_motu_spec *spec);
 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_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
 		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
 		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
 		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
 		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
 		return -ENXIO;
 }

 #endif
	/* 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 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 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 amdtp_domain domain;
	};

	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,
	};

	#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_V2,
	SND_MOTU_PROTOCOL_V3,
	};

	struct snd_motu_spec {
	const char *const name;
	enum snd_motu_protocol_version protocol_version;
	enum snd_motu_spec_flags flags;

	unsigned char tx_fixed_pcm_chunks[3];
	unsigned char rx_fixed_pcm_chunks[3];
	};

	extern const struct snd_motu_spec snd_motu_spec_828mk2;
	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;
	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_4pre;

	int amdtp_motu_init(struct amdtp_stream s, struct fw_unit unit,
	enum amdtp_stream_direction dir,
	const struct snd_motu_spec *spec);
	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_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
	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
	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
	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
	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
	return -ENXIO;
	}

	#endif