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