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 fixed_part_pcm_chunks[3];
  40         unsigned char differed_part_pcm_chunks[3];
  41 };
  42
  43 struct snd_motu {
  44         struct snd_card *card;
  45         struct fw_unit *unit;
  46         struct mutex mutex;
  47         spinlock_t lock;
  48
  49         bool registered;
  50         struct delayed_work dwork;
  51
  52         /* Model dependent information. */
  53         const struct snd_motu_spec *spec;
  54
  55         /* For packet streaming */
  56         struct snd_motu_packet_format tx_packet_formats;
  57         struct snd_motu_packet_format rx_packet_formats;
  58         struct amdtp_stream tx_stream;
  59         struct amdtp_stream rx_stream;
  60         struct fw_iso_resources tx_resources;
  61         struct fw_iso_resources rx_resources;
  62         unsigned int substreams_counter;
  63
  64         /* For notification. */
  65         struct fw_address_handler async_handler;
  66         u32 msg;
  67
  68         /* For uapi */
  69         int dev_lock_count;
  70         bool dev_lock_changed;
  71         wait_queue_head_t hwdep_wait;
  72
  73         struct amdtp_domain domain;
  74 };
  75
  76 enum snd_motu_spec_flags {
  77         SND_MOTU_SPEC_SUPPORT_CLOCK_X2  = 0x0001,
  78         SND_MOTU_SPEC_SUPPORT_CLOCK_X4  = 0x0002,
  79         SND_MOTU_SPEC_TX_MICINST_CHUNK  = 0x0004,
  80         SND_MOTU_SPEC_TX_RETURN_CHUNK   = 0x0008,
  81         SND_MOTU_SPEC_TX_REVERB_CHUNK   = 0x0010,
  82         SND_MOTU_SPEC_HAS_AESEBU_IFACE  = 0x0020,
  83         SND_MOTU_SPEC_HAS_OPT_IFACE_A   = 0x0040,
  84         SND_MOTU_SPEC_HAS_OPT_IFACE_B   = 0x0080,
  85         SND_MOTU_SPEC_RX_MIDI_2ND_Q     = 0x0100,
  86         SND_MOTU_SPEC_RX_MIDI_3RD_Q     = 0x0200,
  87         SND_MOTU_SPEC_TX_MIDI_2ND_Q     = 0x0400,
  88         SND_MOTU_SPEC_TX_MIDI_3RD_Q     = 0x0800,
  89         SND_MOTU_SPEC_RX_SEPARATED_MAIN = 0x1000,
  90 };
  91
  92 #define SND_MOTU_CLOCK_RATE_COUNT       6
  93 extern const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT];
  94
  95 enum snd_motu_clock_source {
  96         SND_MOTU_CLOCK_SOURCE_INTERNAL,
  97         SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB,
  98         SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT,
  99         SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A,
 100         SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B,
 101         SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT,
 102         SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A,
 103         SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B,
 104         SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX,
 105         SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR,
 106         SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC,
 107         SND_MOTU_CLOCK_SOURCE_SPH,
 108         SND_MOTU_CLOCK_SOURCE_UNKNOWN,
 109 };
 110
 111 struct snd_motu_protocol {
 112         int (*get_clock_rate)(struct snd_motu *motu, unsigned int *rate);
 113         int (*set_clock_rate)(struct snd_motu *motu, unsigned int rate);
 114         int (*get_clock_source)(struct snd_motu *motu,
 115                                 enum snd_motu_clock_source *source);
 116         int (*switch_fetching_mode)(struct snd_motu *motu, bool enable);
 117         int (*cache_packet_formats)(struct snd_motu *motu);
 118 };
 119
 120 struct snd_motu_spec {
 121         const char *const name;
 122         enum snd_motu_spec_flags flags;
 123
 124         unsigned char analog_in_ports;
 125         unsigned char analog_out_ports;
 126
 127         const struct snd_motu_protocol *const protocol;
 128 };
 129
 130 extern const struct snd_motu_protocol snd_motu_protocol_v2;
 131 extern const struct snd_motu_protocol snd_motu_protocol_v3;
 132
 133 extern const struct snd_motu_spec snd_motu_spec_828mk2;
 134
 135 int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
 136                     enum amdtp_stream_direction dir,
 137                     const struct snd_motu_protocol *const protocol);
 138 int amdtp_motu_set_parameters(struct amdtp_stream *s, unsigned int rate,
 139                               unsigned int midi_ports,
 140                               struct snd_motu_packet_format *formats);
 141 int amdtp_motu_add_pcm_hw_constraints(struct amdtp_stream *s,
 142                                       struct snd_pcm_runtime *runtime);
 143 void amdtp_motu_midi_trigger(struct amdtp_stream *s, unsigned int port,
 144                              struct snd_rawmidi_substream *midi);
 145
 146 int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg,
 147                               size_t size);
 148 int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg,
 149                                size_t size);
 150 int snd_motu_transaction_register(struct snd_motu *motu);
 151 int snd_motu_transaction_reregister(struct snd_motu *motu);
 152 void snd_motu_transaction_unregister(struct snd_motu *motu);
 153
 154 int snd_motu_stream_init_duplex(struct snd_motu *motu);
 155 void snd_motu_stream_destroy_duplex(struct snd_motu *motu);
 156 int snd_motu_stream_cache_packet_formats(struct snd_motu *motu);
 157 int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate,
 158                                    unsigned int frames_per_period,
 159                                    unsigned int frames_per_buffer);
 160 int snd_motu_stream_start_duplex(struct snd_motu *motu);
 161 void snd_motu_stream_stop_duplex(struct snd_motu *motu);
 162 int snd_motu_stream_lock_try(struct snd_motu *motu);
 163 void snd_motu_stream_lock_release(struct snd_motu *motu);
 164
 165 void snd_motu_proc_init(struct snd_motu *motu);
 166
 167 int snd_motu_create_pcm_devices(struct snd_motu *motu);
 168
 169 int snd_motu_create_midi_devices(struct snd_motu *motu);
 170
 171 int snd_motu_create_hwdep_device(struct snd_motu *motu);
 172 #endif