sound/firewire/dice/dice.h

   1 /*
   2  * dice.h - a part of driver for Dice based devices
   3  *
   4  * Copyright (c) Clemens Ladisch
   5  * Copyright (c) 2014 Takashi Sakamoto
   6  *
   7  * Licensed under the terms of the GNU General Public License, version 2.
   8  */
   9
  10 #ifndef SOUND_DICE_H_INCLUDED
  11 #define SOUND_DICE_H_INCLUDED
  12
  13 #include <linux/compat.h>
  14 #include <linux/completion.h>
  15 #include <linux/delay.h>
  16 #include <linux/device.h>
  17 #include <linux/firewire.h>
  18 #include <linux/firewire-constants.h>
  19 #include <linux/jiffies.h>
  20 #include <linux/module.h>
  21 #include <linux/mod_devicetable.h>
  22 #include <linux/mutex.h>
  23 #include <linux/slab.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/wait.h>
  26 #include <linux/sched/signal.h>
  27
  28 #include <sound/control.h>
  29 #include <sound/core.h>
  30 #include <sound/firewire.h>
  31 #include <sound/hwdep.h>
  32 #include <sound/info.h>
  33 #include <sound/initval.h>
  34 #include <sound/pcm.h>
  35 #include <sound/pcm_params.h>
  36 #include <sound/rawmidi.h>
  37
  38 #include "../amdtp-am824.h"
  39 #include "../iso-resources.h"
  40 #include "../lib.h"
  41 #include "dice-interface.h"
  42
  43 /*
  44  * This module support maximum 2 pairs of tx/rx isochronous streams for
  45  * our convinience.
  46  *
  47  * In documents for ASICs called with a name of 'DICE':
  48  *  - ASIC for DICE II:
  49  *   - Maximum 2 tx and 4 rx are supported.
  50  *   - A packet supports maximum 16 data channels.
  51  *  - TCD2210/2210-E (so-called 'Dice Mini'):
  52  *   - Maximum 2 tx and 2 rx are supported.
  53  *   - A packet supports maximum 16 data channels.
  54  *  - TCD2220/2220-E (so-called 'Dice Jr.')
  55  *   - 2 tx and 2 rx are supported.
  56  *   - A packet supports maximum 16 data channels.
  57  *  - TCD3070-CH (so-called 'Dice III')
  58  *   - Maximum 2 tx and 2 rx are supported.
  59  *   - A packet supports maximum 32 data channels.
  60  *
  61  * For the above, MIDI conformant data channel is just on the first isochronous
  62  * stream.
  63  */
  64 #define MAX_STREAMS     2
  65
  66 struct snd_dice {
  67         struct snd_card *card;
  68         struct fw_unit *unit;
  69         spinlock_t lock;
  70         struct mutex mutex;
  71
  72         bool registered;
  73         struct delayed_work dwork;
  74
  75         /* Offsets for sub-addresses */
  76         unsigned int global_offset;
  77         unsigned int rx_offset;
  78         unsigned int tx_offset;
  79         unsigned int sync_offset;
  80         unsigned int rsrv_offset;
  81
  82         unsigned int clock_caps;
  83
  84         struct fw_address_handler notification_handler;
  85         int owner_generation;
  86         u32 notification_bits;
  87
  88         /* For uapi */
  89         int dev_lock_count; /* > 0 driver, < 0 userspace */
  90         bool dev_lock_changed;
  91         wait_queue_head_t hwdep_wait;
  92
  93         /* For streaming */
  94         struct fw_iso_resources tx_resources[MAX_STREAMS];
  95         struct fw_iso_resources rx_resources[MAX_STREAMS];
  96         struct amdtp_stream tx_stream[MAX_STREAMS];
  97         struct amdtp_stream rx_stream[MAX_STREAMS];
  98         bool global_enabled;
  99         struct completion clock_accepted;
 100         unsigned int substreams_counter;
 101
 102         bool force_two_pcms;
 103 };
 104
 105 enum snd_dice_addr_type {
 106         SND_DICE_ADDR_TYPE_PRIVATE,
 107         SND_DICE_ADDR_TYPE_GLOBAL,
 108         SND_DICE_ADDR_TYPE_TX,
 109         SND_DICE_ADDR_TYPE_RX,
 110         SND_DICE_ADDR_TYPE_SYNC,
 111         SND_DICE_ADDR_TYPE_RSRV,
 112 };
 113
 114 int snd_dice_transaction_write(struct snd_dice *dice,
 115                                enum snd_dice_addr_type type,
 116                                unsigned int offset,
 117                                void *buf, unsigned int len);
 118 int snd_dice_transaction_read(struct snd_dice *dice,
 119                               enum snd_dice_addr_type type, unsigned int offset,
 120                               void *buf, unsigned int len);
 121
 122 static inline int snd_dice_transaction_write_global(struct snd_dice *dice,
 123                                                     unsigned int offset,
 124                                                     void *buf, unsigned int len)
 125 {
 126         return snd_dice_transaction_write(dice,
 127                                           SND_DICE_ADDR_TYPE_GLOBAL, offset,
 128                                           buf, len);
 129 }
 130 static inline int snd_dice_transaction_read_global(struct snd_dice *dice,
 131                                                    unsigned int offset,
 132                                                    void *buf, unsigned int len)
 133 {
 134         return snd_dice_transaction_read(dice,
 135                                          SND_DICE_ADDR_TYPE_GLOBAL, offset,
 136                                          buf, len);
 137 }
 138 static inline int snd_dice_transaction_write_tx(struct snd_dice *dice,
 139                                                 unsigned int offset,
 140                                                 void *buf, unsigned int len)
 141 {
 142         return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_TX, offset,
 143                                           buf, len);
 144 }
 145 static inline int snd_dice_transaction_read_tx(struct snd_dice *dice,
 146                                                unsigned int offset,
 147                                                void *buf, unsigned int len)
 148 {
 149         return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_TX, offset,
 150                                          buf, len);
 151 }
 152 static inline int snd_dice_transaction_write_rx(struct snd_dice *dice,
 153                                                 unsigned int offset,
 154                                                 void *buf, unsigned int len)
 155 {
 156         return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_RX, offset,
 157                                           buf, len);
 158 }
 159 static inline int snd_dice_transaction_read_rx(struct snd_dice *dice,
 160                                                unsigned int offset,
 161                                                void *buf, unsigned int len)
 162 {
 163         return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_RX, offset,
 164                                          buf, len);
 165 }
 166 static inline int snd_dice_transaction_write_sync(struct snd_dice *dice,
 167                                                   unsigned int offset,
 168                                                   void *buf, unsigned int len)
 169 {
 170         return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_SYNC, offset,
 171                                           buf, len);
 172 }
 173 static inline int snd_dice_transaction_read_sync(struct snd_dice *dice,
 174                                                  unsigned int offset,
 175                                                  void *buf, unsigned int len)
 176 {
 177         return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_SYNC, offset,
 178                                          buf, len);
 179 }
 180
 181 int snd_dice_transaction_get_clock_source(struct snd_dice *dice,
 182                                           unsigned int *source);
 183 int snd_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate);
 184 int snd_dice_transaction_set_enable(struct snd_dice *dice);
 185 void snd_dice_transaction_clear_enable(struct snd_dice *dice);
 186 int snd_dice_transaction_init(struct snd_dice *dice);
 187 int snd_dice_transaction_reinit(struct snd_dice *dice);
 188 void snd_dice_transaction_destroy(struct snd_dice *dice);
 189
 190 #define SND_DICE_RATES_COUNT    7
 191 extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT];
 192
 193 int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate);
 194 void snd_dice_stream_stop_duplex(struct snd_dice *dice);
 195 int snd_dice_stream_init_duplex(struct snd_dice *dice);
 196 void snd_dice_stream_destroy_duplex(struct snd_dice *dice);
 197 void snd_dice_stream_update_duplex(struct snd_dice *dice);
 198
 199 int snd_dice_stream_lock_try(struct snd_dice *dice);
 200 void snd_dice_stream_lock_release(struct snd_dice *dice);
 201
 202 int snd_dice_create_pcm(struct snd_dice *dice);
 203
 204 int snd_dice_create_hwdep(struct snd_dice *dice);
 205
 206 void snd_dice_create_proc(struct snd_dice *dice);
 207
 208 int snd_dice_create_midi(struct snd_dice *dice);
 209
 210 #endif