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 snd_motu {
  43         struct snd_card *card;
  44         struct fw_unit *unit;
  45         struct mutex mutex;
  46         spinlock_t lock;
  47
  48         bool registered;
  49         struct delayed_work dwork;
  50
  51         /* Model dependent information. */
  52         const struct snd_motu_spec *spec;
  53
  54         /* For packet streaming */
  55         struct snd_motu_packet_format tx_packet_formats;
  56         struct snd_motu_packet_format rx_packet_formats;
  57         struct amdtp_stream tx_stream;
  58         struct amdtp_stream rx_stream;
  59         struct fw_iso_resources tx_resources;
  60         struct fw_iso_resources rx_resources;
  61         unsigned int substreams_counter;
  62
  63         /* For notification. */
  64         struct fw_address_handler async_handler;
  65         u32 msg;
  66
  67         /* For uapi */
  68         int dev_lock_count;
  69         bool dev_lock_changed;
  70         wait_queue_head_t hwdep_wait;
  71
  72         struct amdtp_domain domain;
  73 };
  74
  75 enum snd_motu_spec_flags {
  76         SND_MOTU_SPEC_RX_MIDI_2ND_Q     = 0x0001,
  77         SND_MOTU_SPEC_RX_MIDI_3RD_Q     = 0x0002,
  78         SND_MOTU_SPEC_TX_MIDI_2ND_Q     = 0x0004,
  79         SND_MOTU_SPEC_TX_MIDI_3RD_Q     = 0x0008,
  80 };
  81
  82 #define SND_MOTU_CLOCK_RATE_COUNT       6
  83 extern const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT];
  84
  85 enum snd_motu_clock_source {
  86         SND_MOTU_CLOCK_SOURCE_INTERNAL,
  87         SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB,
  88         SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT,
  89         SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A,
  90         SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B,
  91         SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT,
  92         SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A,
  93         SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B,
  94         SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX,
  95         SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR,
  96         SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC,
  97         SND_MOTU_CLOCK_SOURCE_SPH,
  98         SND_MOTU_CLOCK_SOURCE_UNKNOWN,
  99 };
 100
 101 enum snd_motu_protocol_version {
 102         SND_MOTU_PROTOCOL_V2,
 103         SND_MOTU_PROTOCOL_V3,
 104 };
 105
 106 struct snd_motu_spec {
 107         const char *const name;
 108         enum snd_motu_protocol_version protocol_version;
 109         enum snd_motu_spec_flags flags;
 110
 111         unsigned char tx_fixed_pcm_chunks[3];
 112         unsigned char rx_fixed_pcm_chunks[3];
 113 };
 114
 115 extern const struct snd_motu_spec snd_motu_spec_828mk2;
 116 extern const struct snd_motu_spec snd_motu_spec_traveler;
 117 extern const struct snd_motu_spec snd_motu_spec_ultralite;
 118 extern const struct snd_motu_spec snd_motu_spec_8pre;
 119
 120 extern const struct snd_motu_spec snd_motu_spec_828mk3;
 121 extern const struct snd_motu_spec snd_motu_spec_ultralite_mk3;
 122 extern const struct snd_motu_spec snd_motu_spec_audio_express;
 123 extern const struct snd_motu_spec snd_motu_spec_4pre;
 124
 125 int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
 126                     enum amdtp_stream_direction dir,
 127                     const struct snd_motu_spec *spec);
 128 int amdtp_motu_set_parameters(struct amdtp_stream *s, unsigned int rate,
 129                               unsigned int midi_ports,
 130                               struct snd_motu_packet_format *formats);
 131 int amdtp_motu_add_pcm_hw_constraints(struct amdtp_stream *s,
 132                                       struct snd_pcm_runtime *runtime);
 133 void amdtp_motu_midi_trigger(struct amdtp_stream *s, unsigned int port,
 134                              struct snd_rawmidi_substream *midi);
 135
 136 int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg,
 137                               size_t size);
 138 int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg,
 139                                size_t size);
 140 int snd_motu_transaction_register(struct snd_motu *motu);
 141 int snd_motu_transaction_reregister(struct snd_motu *motu);
 142 void snd_motu_transaction_unregister(struct snd_motu *motu);
 143
 144 int snd_motu_stream_init_duplex(struct snd_motu *motu);
 145 void snd_motu_stream_destroy_duplex(struct snd_motu *motu);
 146 int snd_motu_stream_cache_packet_formats(struct snd_motu *motu);
 147 int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate,
 148                                    unsigned int frames_per_period,
 149                                    unsigned int frames_per_buffer);
 150 int snd_motu_stream_start_duplex(struct snd_motu *motu);
 151 void snd_motu_stream_stop_duplex(struct snd_motu *motu);
 152 int snd_motu_stream_lock_try(struct snd_motu *motu);
 153 void snd_motu_stream_lock_release(struct snd_motu *motu);
 154
 155 void snd_motu_proc_init(struct snd_motu *motu);
 156
 157 int snd_motu_create_pcm_devices(struct snd_motu *motu);
 158
 159 int snd_motu_create_midi_devices(struct snd_motu *motu);
 160
 161 int snd_motu_create_hwdep_device(struct snd_motu *motu);
 162
 163 int snd_motu_protocol_v2_get_clock_rate(struct snd_motu *motu,
 164                                         unsigned int *rate);
 165 int snd_motu_protocol_v2_set_clock_rate(struct snd_motu *motu,
 166                                         unsigned int rate);
 167 int snd_motu_protocol_v2_get_clock_source(struct snd_motu *motu,
 168                                           enum snd_motu_clock_source *src);
 169 int snd_motu_protocol_v2_switch_fetching_mode(struct snd_motu *motu,
 170                                               bool enable);
 171 int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu);
 172
 173 int snd_motu_protocol_v3_get_clock_rate(struct snd_motu *motu,
 174                                         unsigned int *rate);
 175 int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu,
 176                                         unsigned int rate);
 177 int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu,
 178                                           enum snd_motu_clock_source *src);
 179 int snd_motu_protocol_v3_switch_fetching_mode(struct snd_motu *motu,
 180                                               bool enable);
 181 int snd_motu_protocol_v3_cache_packet_formats(struct snd_motu *motu);
 182
 183 static inline int snd_motu_protocol_get_clock_rate(struct snd_motu *motu,
 184                                                    unsigned int *rate)
 185 {
 186         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 187                 return snd_motu_protocol_v2_get_clock_rate(motu, rate);
 188         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 189                 return snd_motu_protocol_v3_get_clock_rate(motu, rate);
 190         else
 191                 return -ENXIO;
 192 }
 193
 194 static inline int snd_motu_protocol_set_clock_rate(struct snd_motu *motu,
 195                                                    unsigned int rate)
 196 {
 197         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 198                 return snd_motu_protocol_v2_set_clock_rate(motu, rate);
 199         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 200                 return snd_motu_protocol_v3_set_clock_rate(motu, rate);
 201         else
 202                 return -ENXIO;
 203 }
 204
 205 static inline int snd_motu_protocol_get_clock_source(struct snd_motu *motu,
 206                                         enum snd_motu_clock_source *source)
 207 {
 208         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 209                 return snd_motu_protocol_v2_get_clock_source(motu, source);
 210         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 211                 return snd_motu_protocol_v3_get_clock_source(motu, source);
 212         else
 213                 return -ENXIO;
 214 }
 215
 216 static inline int snd_motu_protocol_switch_fetching_mode(struct snd_motu *motu,
 217                                                          bool enable)
 218 {
 219         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 220                 return snd_motu_protocol_v2_switch_fetching_mode(motu, enable);
 221         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 222                 return snd_motu_protocol_v3_switch_fetching_mode(motu, enable);
 223         else
 224                 return -ENXIO;
 225 }
 226
 227 static inline int snd_motu_protocol_cache_packet_formats(struct snd_motu *motu)
 228 {
 229         if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
 230                 return snd_motu_protocol_v2_cache_packet_formats(motu);
 231         else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
 232                 return snd_motu_protocol_v3_cache_packet_formats(motu);
 233         else
 234                 return -ENXIO;
 235 }
 236
 237 #endif