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 struct snd_dice {
  43         struct snd_card *card;
  44         struct fw_unit *unit;
  45         spinlock_t lock;
  46         struct mutex mutex;
  47
  48         bool registered;
  49         struct delayed_work dwork;
  50
  51         /* Offsets for sub-addresses */
  52         unsigned int global_offset;
  53         unsigned int rx_offset;
  54         unsigned int tx_offset;
  55         unsigned int sync_offset;
  56         unsigned int rsrv_offset;
  57
  58         unsigned int clock_caps;
  59
  60         struct fw_address_handler notification_handler;
  61         int owner_generation;
  62         u32 notification_bits;
  63
  64         /* For uapi */
  65         int dev_lock_count; /* > 0 driver, < 0 userspace */
  66         bool dev_lock_changed;
  67         wait_queue_head_t hwdep_wait;
  68
  69         /* For streaming */
  70         struct fw_iso_resources tx_resources;
  71         struct fw_iso_resources rx_resources;
  72         struct amdtp_stream tx_stream;
  73         struct amdtp_stream rx_stream;
  74         bool global_enabled;
  75         struct completion clock_accepted;
  76         unsigned int substreams_counter;
  77 };
  78
  79 enum snd_dice_addr_type {
  80         SND_DICE_ADDR_TYPE_PRIVATE,
  81         SND_DICE_ADDR_TYPE_GLOBAL,
  82         SND_DICE_ADDR_TYPE_TX,
  83         SND_DICE_ADDR_TYPE_RX,
  84         SND_DICE_ADDR_TYPE_SYNC,
  85         SND_DICE_ADDR_TYPE_RSRV,
  86 };
  87
  88 int snd_dice_transaction_write(struct snd_dice *dice,
  89                                enum snd_dice_addr_type type,
  90                                unsigned int offset,
  91                                void *buf, unsigned int len);
  92 int snd_dice_transaction_read(struct snd_dice *dice,
  93                               enum snd_dice_addr_type type, unsigned int offset,
  94                               void *buf, unsigned int len);
  95
  96 static inline int snd_dice_transaction_write_global(struct snd_dice *dice,
  97                                                     unsigned int offset,
  98                                                     void *buf, unsigned int len)
  99 {
 100         return snd_dice_transaction_write(dice,
 101                                           SND_DICE_ADDR_TYPE_GLOBAL, offset,
 102                                           buf, len);
 103 }
 104 static inline int snd_dice_transaction_read_global(struct snd_dice *dice,
 105                                                    unsigned int offset,
 106                                                    void *buf, unsigned int len)
 107 {
 108         return snd_dice_transaction_read(dice,
 109                                          SND_DICE_ADDR_TYPE_GLOBAL, offset,
 110                                          buf, len);
 111 }
 112 static inline int snd_dice_transaction_write_tx(struct snd_dice *dice,
 113                                                 unsigned int offset,
 114                                                 void *buf, unsigned int len)
 115 {
 116         return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_TX, offset,
 117                                           buf, len);
 118 }
 119 static inline int snd_dice_transaction_read_tx(struct snd_dice *dice,
 120                                                unsigned int offset,
 121                                                void *buf, unsigned int len)
 122 {
 123         return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_TX, offset,
 124                                          buf, len);
 125 }
 126 static inline int snd_dice_transaction_write_rx(struct snd_dice *dice,
 127                                                 unsigned int offset,
 128                                                 void *buf, unsigned int len)
 129 {
 130         return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_RX, offset,
 131                                           buf, len);
 132 }
 133 static inline int snd_dice_transaction_read_rx(struct snd_dice *dice,
 134                                                unsigned int offset,
 135                                                void *buf, unsigned int len)
 136 {
 137         return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_RX, offset,
 138                                          buf, len);
 139 }
 140 static inline int snd_dice_transaction_write_sync(struct snd_dice *dice,
 141                                                   unsigned int offset,
 142                                                   void *buf, unsigned int len)
 143 {
 144         return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_SYNC, offset,
 145                                           buf, len);
 146 }
 147 static inline int snd_dice_transaction_read_sync(struct snd_dice *dice,
 148                                                  unsigned int offset,
 149                                                  void *buf, unsigned int len)
 150 {
 151         return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_SYNC, offset,
 152                                          buf, len);
 153 }
 154
 155 int snd_dice_transaction_get_clock_source(struct snd_dice *dice,
 156                                           unsigned int *source);
 157 int snd_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate);
 158 int snd_dice_transaction_set_enable(struct snd_dice *dice);
 159 void snd_dice_transaction_clear_enable(struct snd_dice *dice);
 160 int snd_dice_transaction_init(struct snd_dice *dice);
 161 int snd_dice_transaction_reinit(struct snd_dice *dice);
 162 void snd_dice_transaction_destroy(struct snd_dice *dice);
 163
 164 #define SND_DICE_RATES_COUNT    7
 165 extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT];
 166
 167 int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate);
 168 void snd_dice_stream_stop_duplex(struct snd_dice *dice);
 169 int snd_dice_stream_init_duplex(struct snd_dice *dice);
 170 void snd_dice_stream_destroy_duplex(struct snd_dice *dice);
 171 void snd_dice_stream_update_duplex(struct snd_dice *dice);
 172
 173 int snd_dice_stream_lock_try(struct snd_dice *dice);
 174 void snd_dice_stream_lock_release(struct snd_dice *dice);
 175
 176 int snd_dice_create_pcm(struct snd_dice *dice);
 177
 178 int snd_dice_create_hwdep(struct snd_dice *dice);
 179
 180 void snd_dice_create_proc(struct snd_dice *dice);
 181
 182 int snd_dice_create_midi(struct snd_dice *dice);
 183
 184 #endif