sound/firewire/motu/motu.h

   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
  33 struct 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
  42 struct 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
  51 struct 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
  86 enum 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
  96 extern const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT];
  97
  98 enum 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
 114 enum snd_motu_protocol_version {
 115         SND_MOTU_PROTOCOL_V1,
 116         SND_MOTU_PROTOCOL_V2,
 117         SND_MOTU_PROTOCOL_V3,
 118 };
 119
 120 struct 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
 130 extern const struct snd_motu_spec snd_motu_spec_828;
 131 extern const struct snd_motu_spec snd_motu_spec_896;
 132
 133 extern const struct snd_motu_spec snd_motu_spec_828mk2;
 134 extern const struct snd_motu_spec snd_motu_spec_896hd;
 135 extern const struct snd_motu_spec snd_motu_spec_traveler;
 136 extern const struct snd_motu_spec snd_motu_spec_ultralite;
 137 extern const struct snd_motu_spec snd_motu_spec_8pre;
 138
 139 extern const struct snd_motu_spec snd_motu_spec_828mk3_fw;
 140 extern const struct snd_motu_spec snd_motu_spec_828mk3_hybrid;
 141 extern const struct snd_motu_spec snd_motu_spec_traveler_mk3;
 142 extern const struct snd_motu_spec snd_motu_spec_ultralite_mk3;
 143 extern const struct snd_motu_spec snd_motu_spec_audio_express;
 144 extern const struct snd_motu_spec snd_motu_spec_4pre;
 145
 146 int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
 147                     enum amdtp_stream_direction dir,
 148                     const struct snd_motu_spec *spec,
 149                     struct amdtp_motu_cache *cache);
 150 int amdtp_motu_set_parameters(struct amdtp_stream *s, unsigned int rate,
 151                               unsigned int midi_ports,
 152                               struct snd_motu_packet_format *formats);
 153 int amdtp_motu_add_pcm_hw_constraints(struct amdtp_stream *s,
 154                                       struct snd_pcm_runtime *runtime);
 155 void amdtp_motu_midi_trigger(struct amdtp_stream *s, unsigned int port,
 156                              struct snd_rawmidi_substream *midi);
 157
 158 int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg,
 159                               size_t size);
 160 int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg,
 161                                size_t size);
 162 int snd_motu_transaction_register(struct snd_motu *motu);
 163 int snd_motu_transaction_reregister(struct snd_motu *motu);
 164 void snd_motu_transaction_unregister(struct snd_motu *motu);
 165
 166 int snd_motu_stream_init_duplex(struct snd_motu *motu);
 167 void snd_motu_stream_destroy_duplex(struct snd_motu *motu);
 168 int snd_motu_stream_cache_packet_formats(struct snd_motu *motu);
 169 int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate,
 170                                    unsigned int frames_per_period,
 171                                    unsigned int frames_per_buffer);
 172 int snd_motu_stream_start_duplex(struct snd_motu *motu);
 173 void snd_motu_stream_stop_duplex(struct snd_motu *motu);
 174 int snd_motu_stream_lock_try(struct snd_motu *motu);
 175 void snd_motu_stream_lock_release(struct snd_motu *motu);
 176
 177 void snd_motu_proc_init(struct snd_motu *motu);
 178
 179 int snd_motu_create_pcm_devices(struct snd_motu *motu);
 180
 181 int snd_motu_create_midi_devices(struct snd_motu *motu);
 182
 183 int snd_motu_create_hwdep_device(struct snd_motu *motu);
 184
 185 int snd_motu_protocol_v1_get_clock_rate(struct snd_motu *motu,
 186                                         unsigned int *rate);
 187 int snd_motu_protocol_v1_set_clock_rate(struct snd_motu *motu,
 188                                         unsigned int rate);
 189 int snd_motu_protocol_v1_get_clock_source(struct snd_motu *motu,
 190                                           enum snd_motu_clock_source *src);
 191 int snd_motu_protocol_v1_switch_fetching_mode(struct snd_motu *motu,
 192                                               bool enable);
 193 int snd_motu_protocol_v1_cache_packet_formats(struct snd_motu *motu);
 194
 195 int snd_motu_protocol_v2_get_clock_rate(struct snd_motu *motu,
 196                                         unsigned int *rate);
 197 int snd_motu_protocol_v2_set_clock_rate(struct snd_motu *motu,
 198                                         unsigned int rate);
 199 int snd_motu_protocol_v2_get_clock_source(struct snd_motu *motu,
 200                                           enum snd_motu_clock_source *src);
 201 int snd_motu_protocol_v2_switch_fetching_mode(struct snd_motu *motu,
 202                                               bool enable);
 203 int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu);
 204
 205 int snd_motu_protocol_v3_get_clock_rate(struct snd_motu *motu,
 206                                         unsigned int *rate);
 207 int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu,
 208                                         unsigned int rate);
 209 int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu,
 210                                           enum snd_motu_clock_source *src);
 211 int snd_motu_protocol_v3_switch_fetching_mode(struct snd_motu *motu,
 212                                               bool enable);
 213 int snd_motu_protocol_v3_cache_packet_formats(struct snd_motu *motu);
 214
 215 static inline int snd_motu_protocol_get_clock_rate(struct snd_motu *motu,
 216                                                    unsigned int *rate)
 217 {
 218         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 219                 return snd_motu_protocol_v2_get_clock_rate(motu, rate);
 220         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 221                 return snd_motu_protocol_v3_get_clock_rate(motu, rate);
 222         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
 223                 return snd_motu_protocol_v1_get_clock_rate(motu, rate);
 224         else
 225                 return -ENXIO;
 226 }
 227
 228 static inline int snd_motu_protocol_set_clock_rate(struct snd_motu *motu,
 229                                                    unsigned int rate)
 230 {
 231         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 232                 return snd_motu_protocol_v2_set_clock_rate(motu, rate);
 233         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 234                 return snd_motu_protocol_v3_set_clock_rate(motu, rate);
 235         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
 236                 return snd_motu_protocol_v1_set_clock_rate(motu, rate);
 237         else
 238                 return -ENXIO;
 239 }
 240
 241 static inline int snd_motu_protocol_get_clock_source(struct snd_motu *motu,
 242                                         enum snd_motu_clock_source *source)
 243 {
 244         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 245                 return snd_motu_protocol_v2_get_clock_source(motu, source);
 246         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 247                 return snd_motu_protocol_v3_get_clock_source(motu, source);
 248         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
 249                 return snd_motu_protocol_v1_get_clock_source(motu, source);
 250         else
 251                 return -ENXIO;
 252 }
 253
 254 static inline int snd_motu_protocol_switch_fetching_mode(struct snd_motu *motu,
 255                                                          bool enable)
 256 {
 257         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 258                 return snd_motu_protocol_v2_switch_fetching_mode(motu, enable);
 259         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 260                 return snd_motu_protocol_v3_switch_fetching_mode(motu, enable);
 261         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
 262                 return snd_motu_protocol_v1_switch_fetching_mode(motu, enable);
 263         else
 264                 return -ENXIO;
 265 }
 266
 267 static inline int snd_motu_protocol_cache_packet_formats(struct snd_motu *motu)
 268 {
 269         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 270                 return snd_motu_protocol_v2_cache_packet_formats(motu);
 271         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 272                 return snd_motu_protocol_v3_cache_packet_formats(motu);
 273         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
 274                 return snd_motu_protocol_v1_cache_packet_formats(motu);
 275         else
 276                 return -ENXIO;
 277 }
 278
 279 int snd_motu_register_dsp_message_parser_new(struct snd_motu *motu);
 280 int snd_motu_register_dsp_message_parser_init(struct snd_motu *motu);
 281 void snd_motu_register_dsp_message_parser_parse(struct snd_motu *motu, const struct pkt_desc *descs,
 282                                         unsigned int desc_count, unsigned int data_block_quadlets);
 283 void snd_motu_register_dsp_message_parser_copy_meter(struct snd_motu *motu,
 284                                         struct snd_firewire_motu_register_dsp_meter *meter);
 285 void snd_motu_register_dsp_message_parser_copy_parameter(struct snd_motu *motu,
 286                                         struct snd_firewire_motu_register_dsp_parameter *params);
 287 unsigned int snd_motu_register_dsp_message_parser_count_event(struct snd_motu *motu);
 288 bool snd_motu_register_dsp_message_parser_copy_event(struct snd_motu *motu, u32 *event);
 289
 290 int snd_motu_command_dsp_message_parser_new(struct snd_motu *motu);
 291 int snd_motu_command_dsp_message_parser_init(struct snd_motu *motu, enum cip_sfc sfc);
 292 void snd_motu_command_dsp_message_parser_parse(struct snd_motu *motu, const struct pkt_desc *descs,
 293                                         unsigned int desc_count, unsigned int data_block_quadlets);
 294 void snd_motu_command_dsp_message_parser_copy_meter(struct snd_motu *motu,
 295                                         struct snd_firewire_motu_command_dsp_meter *meter);
 296
 297 #endif