sound/firewire/tascam/tascam.h

   1 /*
   2  * tascam.h - a part of driver for TASCAM FireWire series
   3  *
   4  * Copyright (c) 2015 Takashi Sakamoto
   5  *
   6  * Licensed under the terms of the GNU General Public License, version 2.
   7  */
   8
   9 #ifndef SOUND_TASCAM_H_INCLUDED
  10 #define SOUND_TASCAM_H_INCLUDED
  11
  12 #include <linux/device.h>
  13 #include <linux/firewire.h>
  14 #include <linux/firewire-constants.h>
  15 #include <linux/module.h>
  16 #include <linux/mod_devicetable.h>
  17 #include <linux/mutex.h>
  18 #include <linux/slab.h>
  19 #include <linux/compat.h>
  20 #include <linux/sched/signal.h>
  21
  22 #include <sound/core.h>
  23 #include <sound/initval.h>
  24 #include <sound/info.h>
  25 #include <sound/pcm.h>
  26 #include <sound/pcm_params.h>
  27 #include <sound/firewire.h>
  28 #include <sound/hwdep.h>
  29 #include <sound/rawmidi.h>
  30
  31 #include "../lib.h"
  32 #include "../amdtp-stream.h"
  33 #include "../iso-resources.h"
  34
  35 struct snd_tscm_spec {
  36         const char *const name;
  37         bool has_adat;
  38         bool has_spdif;
  39         unsigned int pcm_capture_analog_channels;
  40         unsigned int pcm_playback_analog_channels;
  41         unsigned int midi_capture_ports;
  42         unsigned int midi_playback_ports;
  43 };
  44
  45 #define TSCM_MIDI_IN_PORT_MAX   4
  46 #define TSCM_MIDI_OUT_PORT_MAX  4
  47
  48 struct snd_fw_async_midi_port {
  49         struct fw_device *parent;
  50         struct work_struct work;
  51         bool idling;
  52         ktime_t next_ktime;
  53         bool error;
  54
  55         struct fw_transaction transaction;
  56
  57         u8 buf[4];
  58         u8 running_status;
  59         bool on_sysex;
  60
  61         struct snd_rawmidi_substream *substream;
  62         int consume_bytes;
  63 };
  64
  65 struct snd_tscm {
  66         struct snd_card *card;
  67         struct fw_unit *unit;
  68
  69         struct mutex mutex;
  70         spinlock_t lock;
  71
  72         bool registered;
  73         struct delayed_work dwork;
  74         const struct snd_tscm_spec *spec;
  75
  76         struct fw_iso_resources tx_resources;
  77         struct fw_iso_resources rx_resources;
  78         struct amdtp_stream tx_stream;
  79         struct amdtp_stream rx_stream;
  80         unsigned int substreams_counter;
  81
  82         int dev_lock_count;
  83         bool dev_lock_changed;
  84         wait_queue_head_t hwdep_wait;
  85
  86         /* For MIDI message incoming transactions. */
  87         struct fw_address_handler async_handler;
  88         struct snd_rawmidi_substream *tx_midi_substreams[TSCM_MIDI_IN_PORT_MAX];
  89
  90         /* For MIDI message outgoing transactions. */
  91         struct snd_fw_async_midi_port out_ports[TSCM_MIDI_OUT_PORT_MAX];
  92 };
  93
  94 #define TSCM_ADDR_BASE                  0xffff00000000ull
  95
  96 #define TSCM_OFFSET_FIRMWARE_REGISTER   0x0000
  97 #define TSCM_OFFSET_FIRMWARE_FPGA       0x0004
  98 #define TSCM_OFFSET_FIRMWARE_ARM        0x0008
  99 #define TSCM_OFFSET_FIRMWARE_HW         0x000c
 100
 101 #define TSCM_OFFSET_ISOC_TX_CH          0x0200
 102 #define TSCM_OFFSET_UNKNOWN             0x0204
 103 #define TSCM_OFFSET_START_STREAMING     0x0208
 104 #define TSCM_OFFSET_ISOC_RX_CH          0x020c
 105 #define TSCM_OFFSET_ISOC_RX_ON          0x0210  /* Little conviction. */
 106 #define TSCM_OFFSET_TX_PCM_CHANNELS     0x0214
 107 #define TSCM_OFFSET_RX_PCM_CHANNELS     0x0218
 108 #define TSCM_OFFSET_MULTIPLEX_MODE      0x021c
 109 #define TSCM_OFFSET_ISOC_TX_ON          0x0220
 110 /* Unknown                              0x0224 */
 111 #define TSCM_OFFSET_CLOCK_STATUS        0x0228
 112 #define TSCM_OFFSET_SET_OPTION          0x022c
 113
 114 #define TSCM_OFFSET_MIDI_TX_ON          0x0300
 115 #define TSCM_OFFSET_MIDI_TX_ADDR_HI     0x0304
 116 #define TSCM_OFFSET_MIDI_TX_ADDR_LO     0x0308
 117
 118 #define TSCM_OFFSET_LED_POWER           0x0404
 119
 120 #define TSCM_OFFSET_MIDI_RX_QUAD        0x4000
 121
 122 enum snd_tscm_clock {
 123         SND_TSCM_CLOCK_INTERNAL = 0,
 124         SND_TSCM_CLOCK_WORD     = 1,
 125         SND_TSCM_CLOCK_SPDIF    = 2,
 126         SND_TSCM_CLOCK_ADAT     = 3,
 127 };
 128
 129 int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit,
 130                   enum amdtp_stream_direction dir, unsigned int pcm_channels);
 131 int amdtp_tscm_set_parameters(struct amdtp_stream *s, unsigned int rate);
 132 int amdtp_tscm_add_pcm_hw_constraints(struct amdtp_stream *s,
 133                                       struct snd_pcm_runtime *runtime);
 134
 135 int snd_tscm_stream_get_rate(struct snd_tscm *tscm, unsigned int *rate);
 136 int snd_tscm_stream_get_clock(struct snd_tscm *tscm,
 137                               enum snd_tscm_clock *clock);
 138 int snd_tscm_stream_init_duplex(struct snd_tscm *tscm);
 139 void snd_tscm_stream_update_duplex(struct snd_tscm *tscm);
 140 void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm);
 141 int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate);
 142 void snd_tscm_stream_stop_duplex(struct snd_tscm *tscm);
 143
 144 void snd_tscm_stream_lock_changed(struct snd_tscm *tscm);
 145 int snd_tscm_stream_lock_try(struct snd_tscm *tscm);
 146 void snd_tscm_stream_lock_release(struct snd_tscm *tscm);
 147
 148 void snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port);
 149
 150 static inline void
 151 snd_fw_async_midi_port_run(struct snd_fw_async_midi_port *port,
 152                            struct snd_rawmidi_substream *substream)
 153 {
 154         if (!port->error) {
 155                 port->substream = substream;
 156                 schedule_work(&port->work);
 157         }
 158 }
 159
 160 static inline void
 161 snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port *port)
 162 {
 163         port->substream = NULL;
 164         cancel_work_sync(&port->work);
 165         port->error = false;
 166 }
 167
 168 int snd_tscm_transaction_register(struct snd_tscm *tscm);
 169 int snd_tscm_transaction_reregister(struct snd_tscm *tscm);
 170 void snd_tscm_transaction_unregister(struct snd_tscm *tscm);
 171
 172 void snd_tscm_proc_init(struct snd_tscm *tscm);
 173
 174 int snd_tscm_create_pcm_devices(struct snd_tscm *tscm);
 175
 176 int snd_tscm_create_midi_devices(struct snd_tscm *tscm);
 177
 178 int snd_tscm_create_hwdep_device(struct snd_tscm *tscm);
 179
 180 #endif