1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * motu.h - a part of driver for MOTU FireWire series 4 * 5 * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp> 6 */ 7 8#ifndef SOUND_FIREWIRE_MOTU_H_INCLUDED 9#define SOUND_FIREWIRE_MOTU_H_INCLUDED 10 11#include <linux/device.h> 12#include <linux/firewire.h> 13#include <linux/firewire-constants.h> 14#include <linux/module.h> 15#include <linux/mod_devicetable.h> 16#include <linux/mutex.h> 17#include <linux/slab.h> 18#include <linux/compat.h> 19#include <linux/sched/signal.h> 20 21#include <sound/control.h> 22#include <sound/core.h> 23#include <sound/pcm.h> 24#include <sound/info.h> 25#include <sound/rawmidi.h> 26#include <sound/firewire.h> 27#include <sound/hwdep.h> 28 29#include "../lib.h" 30#include "../amdtp-stream.h" 31#include "../iso-resources.h" 32 33struct snd_motu_packet_format { 34 unsigned char midi_flag_offset; 35 unsigned char midi_byte_offset; 36 unsigned char pcm_byte_offset; 37 38 unsigned char msg_chunks; 39 unsigned char pcm_chunks[3]; 40}; 41 42struct amdtp_motu_cache { 43 unsigned int *event_offsets; 44 unsigned int size; 45 unsigned int tail; 46 unsigned int tx_cycle_count; 47 unsigned int head; 48 unsigned int rx_cycle_count; 49}; 50 51struct snd_motu { 52 struct snd_card *card; 53 struct fw_unit *unit; 54 struct mutex mutex; 55 spinlock_t lock; 56 57 /* Model dependent information. */ 58 const struct snd_motu_spec *spec; 59 60 /* For packet streaming */ 61 struct snd_motu_packet_format tx_packet_formats; 62 struct snd_motu_packet_format rx_packet_formats; 63 struct amdtp_stream tx_stream; 64 struct amdtp_stream rx_stream; 65 struct fw_iso_resources tx_resources; 66 struct fw_iso_resources rx_resources; 67 unsigned int substreams_counter; 68 69 /* For notification. */ 70 struct fw_address_handler async_handler; 71 u32 msg; 72 73 /* For uapi */ 74 int dev_lock_count; 75 bool dev_lock_changed; 76 wait_queue_head_t hwdep_wait; 77 struct snd_hwdep *hwdep; 78 79 struct amdtp_domain domain; 80 81 struct amdtp_motu_cache cache; 82 83 void *message_parser; 84}; 85 86enum snd_motu_spec_flags { 87 SND_MOTU_SPEC_RX_MIDI_2ND_Q = 0x0001, 88 SND_MOTU_SPEC_RX_MIDI_3RD_Q = 0x0002, 89 SND_MOTU_SPEC_TX_MIDI_2ND_Q = 0x0004, 90 SND_MOTU_SPEC_TX_MIDI_3RD_Q = 0x0008, 91 SND_MOTU_SPEC_REGISTER_DSP = 0x0010, 92 SND_MOTU_SPEC_COMMAND_DSP = 0x0020, 93}; 94 95#define SND_MOTU_CLOCK_RATE_COUNT 6 96extern const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT]; 97 98enum snd_motu_clock_source { 99 SND_MOTU_CLOCK_SOURCE_INTERNAL, 100 SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB, 101 SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT, 102 SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A, 103 SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B, 104 SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT, 105 SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A, 106 SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B, 107 SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX, 108 SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR, 109 SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC, 110 SND_MOTU_CLOCK_SOURCE_SPH, 111 SND_MOTU_CLOCK_SOURCE_UNKNOWN, 112}; 113 114enum snd_motu_protocol_version { 115 SND_MOTU_PROTOCOL_V1, 116 SND_MOTU_PROTOCOL_V2, 117 SND_MOTU_PROTOCOL_V3, 118}; 119 120struct snd_motu_spec { 121 const char *const name; 122 enum snd_motu_protocol_version protocol_version; 123 // The combination of snd_motu_spec_flags enumeration-constants. 124 unsigned int flags; 125 126 unsigned char tx_fixed_pcm_chunks[3]; 127 unsigned char rx_fixed_pcm_chunks[3]; 128}; 129 130extern const struct snd_motu_spec snd_motu_spec_828; 131extern const struct snd_motu_spec snd_motu_spec_896; 132 133extern const struct snd_motu_spec snd_motu_spec_828mk2; 134extern const struct snd_motu_spec snd_motu_spec_896hd; 135extern const struct snd_motu_spec snd_motu_spec_traveler; 136extern const struct snd_motu_spec snd_motu_spec_ultralite; 137extern const struct snd_motu_spec snd_motu_spec_8pre; 138 139extern const struct snd_motu_spec snd_motu_spec_828mk3_fw; 140extern const struct snd_motu_spec snd_motu_spec_828mk3_hybrid; 141extern const struct snd_motu_spec snd_motu_spec_896mk3; 142extern const struct snd_motu_spec snd_motu_spec_traveler_mk3; 143extern const struct snd_motu_spec snd_motu_spec_ultralite_mk3; 144extern const struct snd_motu_spec snd_motu_spec_audio_express; 145extern const struct snd_motu_spec snd_motu_spec_track16; 146extern const struct snd_motu_spec snd_motu_spec_4pre; 147 148int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit, 149 enum amdtp_stream_direction dir, 150 const struct snd_motu_spec *spec, 151 struct amdtp_motu_cache *cache); 152int amdtp_motu_set_parameters(struct amdtp_stream *s, unsigned int rate, 153 unsigned int midi_ports, 154 struct snd_motu_packet_format *formats); 155int amdtp_motu_add_pcm_hw_constraints(struct amdtp_stream *s, 156 struct snd_pcm_runtime *runtime); 157void amdtp_motu_midi_trigger(struct amdtp_stream *s, unsigned int port, 158 struct snd_rawmidi_substream *midi); 159 160int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg, 161 size_t size); 162int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg, 163 size_t size); 164int snd_motu_transaction_register(struct snd_motu *motu); 165int snd_motu_transaction_reregister(struct snd_motu *motu); 166void snd_motu_transaction_unregister(struct snd_motu *motu); 167 168int snd_motu_stream_init_duplex(struct snd_motu *motu); 169void snd_motu_stream_destroy_duplex(struct snd_motu *motu); 170int snd_motu_stream_cache_packet_formats(struct snd_motu *motu); 171int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate, 172 unsigned int frames_per_period, 173 unsigned int frames_per_buffer); 174int snd_motu_stream_start_duplex(struct snd_motu *motu); 175void snd_motu_stream_stop_duplex(struct snd_motu *motu); 176int snd_motu_stream_lock_try(struct snd_motu *motu); 177void snd_motu_stream_lock_release(struct snd_motu *motu); 178 179void snd_motu_proc_init(struct snd_motu *motu); 180 181int snd_motu_create_pcm_devices(struct snd_motu *motu); 182 183int snd_motu_create_midi_devices(struct snd_motu *motu); 184 185int snd_motu_create_hwdep_device(struct snd_motu *motu); 186 187int snd_motu_protocol_v1_get_clock_rate(struct snd_motu *motu, 188 unsigned int *rate); 189int snd_motu_protocol_v1_set_clock_rate(struct snd_motu *motu, 190 unsigned int rate); 191int snd_motu_protocol_v1_get_clock_source(struct snd_motu *motu, 192 enum snd_motu_clock_source *src); 193int snd_motu_protocol_v1_switch_fetching_mode(struct snd_motu *motu, 194 bool enable); 195int snd_motu_protocol_v1_cache_packet_formats(struct snd_motu *motu); 196 197int snd_motu_protocol_v2_get_clock_rate(struct snd_motu *motu, 198 unsigned int *rate); 199int snd_motu_protocol_v2_set_clock_rate(struct snd_motu *motu, 200 unsigned int rate); 201int snd_motu_protocol_v2_get_clock_source(struct snd_motu *motu, 202 enum snd_motu_clock_source *src); 203int snd_motu_protocol_v2_switch_fetching_mode(struct snd_motu *motu, 204 bool enable); 205int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu); 206 207int snd_motu_protocol_v3_get_clock_rate(struct snd_motu *motu, 208 unsigned int *rate); 209int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu, 210 unsigned int rate); 211int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu, 212 enum snd_motu_clock_source *src); 213int snd_motu_protocol_v3_switch_fetching_mode(struct snd_motu *motu, 214 bool enable); 215int snd_motu_protocol_v3_cache_packet_formats(struct snd_motu *motu); 216 217static inline int snd_motu_protocol_get_clock_rate(struct snd_motu *motu, 218 unsigned int *rate) 219{ 220 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2) 221 return snd_motu_protocol_v2_get_clock_rate(motu, rate); 222 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3) 223 return snd_motu_protocol_v3_get_clock_rate(motu, rate); 224 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1) 225 return snd_motu_protocol_v1_get_clock_rate(motu, rate); 226 else 227 return -ENXIO; 228} 229 230static inline int snd_motu_protocol_set_clock_rate(struct snd_motu *motu, 231 unsigned int rate) 232{ 233 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2) 234 return snd_motu_protocol_v2_set_clock_rate(motu, rate); 235 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3) 236 return snd_motu_protocol_v3_set_clock_rate(motu, rate); 237 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1) 238 return snd_motu_protocol_v1_set_clock_rate(motu, rate); 239 else 240 return -ENXIO; 241} 242 243static inline int snd_motu_protocol_get_clock_source(struct snd_motu *motu, 244 enum snd_motu_clock_source *source) 245{ 246 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2) 247 return snd_motu_protocol_v2_get_clock_source(motu, source); 248 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3) 249 return snd_motu_protocol_v3_get_clock_source(motu, source); 250 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1) 251 return snd_motu_protocol_v1_get_clock_source(motu, source); 252 else 253 return -ENXIO; 254} 255 256static inline int snd_motu_protocol_switch_fetching_mode(struct snd_motu *motu, 257 bool enable) 258{ 259 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2) 260 return snd_motu_protocol_v2_switch_fetching_mode(motu, enable); 261 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3) 262 return snd_motu_protocol_v3_switch_fetching_mode(motu, enable); 263 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1) 264 return snd_motu_protocol_v1_switch_fetching_mode(motu, enable); 265 else 266 return -ENXIO; 267} 268 269static inline int snd_motu_protocol_cache_packet_formats(struct snd_motu *motu) 270{ 271 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2) 272 return snd_motu_protocol_v2_cache_packet_formats(motu); 273 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3) 274 return snd_motu_protocol_v3_cache_packet_formats(motu); 275 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1) 276 return snd_motu_protocol_v1_cache_packet_formats(motu); 277 else 278 return -ENXIO; 279} 280 281int snd_motu_register_dsp_message_parser_new(struct snd_motu *motu); 282int snd_motu_register_dsp_message_parser_init(struct snd_motu *motu); 283void snd_motu_register_dsp_message_parser_parse(const struct amdtp_stream *s, 284 const struct pkt_desc *descs, unsigned int count); 285void snd_motu_register_dsp_message_parser_copy_meter(struct snd_motu *motu, 286 struct snd_firewire_motu_register_dsp_meter *meter); 287void snd_motu_register_dsp_message_parser_copy_parameter(struct snd_motu *motu, 288 struct snd_firewire_motu_register_dsp_parameter *params); 289unsigned int snd_motu_register_dsp_message_parser_count_event(struct snd_motu *motu); 290bool snd_motu_register_dsp_message_parser_copy_event(struct snd_motu *motu, u32 *event); 291 292int snd_motu_command_dsp_message_parser_new(struct snd_motu *motu); 293int snd_motu_command_dsp_message_parser_init(struct snd_motu *motu, enum cip_sfc sfc); 294void snd_motu_command_dsp_message_parser_parse(const struct amdtp_stream *s, 295 const struct pkt_desc *descs, unsigned int count); 296void snd_motu_command_dsp_message_parser_copy_meter(struct snd_motu *motu, 297 struct snd_firewire_motu_command_dsp_meter *meter); 298 299#endif 300