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         unsigned int tx_channels[3];
  60         unsigned int rx_channels[3];
  61         unsigned int tx_midi_ports[3];
  62         unsigned int rx_midi_ports[3];
  63
  64         struct fw_address_handler notification_handler;
  65         int owner_generation;
  66         u32 notification_bits;
  67
  68         /* For uapi */
  69         int dev_lock_count; /* > 0 driver, < 0 userspace */
  70         bool dev_lock_changed;
  71         wait_queue_head_t hwdep_wait;
  72
  73         /* For streaming */
  74         struct fw_iso_resources tx_resources;
  75         struct fw_iso_resources rx_resources;
  76         struct amdtp_stream tx_stream;
  77         struct amdtp_stream rx_stream;
  78         bool global_enabled;
  79         struct completion clock_accepted;
  80         unsigned int substreams_counter;
  81 };
  82
  83 enum snd_dice_addr_type {
  84         SND_DICE_ADDR_TYPE_PRIVATE,
  85         SND_DICE_ADDR_TYPE_GLOBAL,
  86         SND_DICE_ADDR_TYPE_TX,
  87         SND_DICE_ADDR_TYPE_RX,
  88         SND_DICE_ADDR_TYPE_SYNC,
  89         SND_DICE_ADDR_TYPE_RSRV,
  90 };
  91
  92 int snd_dice_transaction_write(struct snd_dice *dice,
  93                                enum snd_dice_addr_type type,
  94                                unsigned int offset,
  95                                void *buf, unsigned int len);
  96 int snd_dice_transaction_read(struct snd_dice *dice,
  97                               enum snd_dice_addr_type type, unsigned int offset,
  98                               void *buf, unsigned int len);
  99
 100 static inline int snd_dice_transaction_write_global(struct snd_dice *dice,
 101                                                     unsigned int offset,
 102                                                     void *buf, unsigned int len)
 103 {
 104         return snd_dice_transaction_write(dice,
 105                                           SND_DICE_ADDR_TYPE_GLOBAL, offset,
 106                                           buf, len);
 107 }
 108 static inline int snd_dice_transaction_read_global(struct snd_dice *dice,
 109                                                    unsigned int offset,
 110                                                    void *buf, unsigned int len)
 111 {
 112         return snd_dice_transaction_read(dice,
 113                                          SND_DICE_ADDR_TYPE_GLOBAL, offset,
 114                                          buf, len);
 115 }
 116 static inline int snd_dice_transaction_write_tx(struct snd_dice *dice,
 117                                                 unsigned int offset,
 118                                                 void *buf, unsigned int len)
 119 {
 120         return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_TX, offset,
 121                                           buf, len);
 122 }
 123 static inline int snd_dice_transaction_read_tx(struct snd_dice *dice,
 124                                                unsigned int offset,
 125                                                void *buf, unsigned int len)
 126 {
 127         return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_TX, offset,
 128                                          buf, len);
 129 }
 130 static inline int snd_dice_transaction_write_rx(struct snd_dice *dice,
 131                                                 unsigned int offset,
 132                                                 void *buf, unsigned int len)
 133 {
 134         return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_RX, offset,
 135                                           buf, len);
 136 }
 137 static inline int snd_dice_transaction_read_rx(struct snd_dice *dice,
 138                                                unsigned int offset,
 139                                                void *buf, unsigned int len)
 140 {
 141         return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_RX, offset,
 142                                          buf, len);
 143 }
 144 static inline int snd_dice_transaction_write_sync(struct snd_dice *dice,
 145                                                   unsigned int offset,
 146                                                   void *buf, unsigned int len)
 147 {
 148         return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_SYNC, offset,
 149                                           buf, len);
 150 }
 151 static inline int snd_dice_transaction_read_sync(struct snd_dice *dice,
 152                                                  unsigned int offset,
 153                                                  void *buf, unsigned int len)
 154 {
 155         return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_SYNC, offset,
 156                                          buf, len);
 157 }
 158
 159 int snd_dice_transaction_get_clock_source(struct snd_dice *dice,
 160                                           unsigned int *source);
 161 int snd_dice_transaction_set_rate(struct snd_dice *dice, unsigned int rate);
 162 int snd_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate);
 163 int snd_dice_transaction_set_enable(struct snd_dice *dice);
 164 void snd_dice_transaction_clear_enable(struct snd_dice *dice);
 165 int snd_dice_transaction_init(struct snd_dice *dice);
 166 int snd_dice_transaction_reinit(struct snd_dice *dice);
 167 void snd_dice_transaction_destroy(struct snd_dice *dice);
 168
 169 #define SND_DICE_RATES_COUNT    7
 170 extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT];
 171
 172 int snd_dice_stream_get_rate_mode(struct snd_dice *dice,
 173                                   unsigned int rate, unsigned int *mode);
 174
 175 int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate);
 176 void snd_dice_stream_stop_duplex(struct snd_dice *dice);
 177 int snd_dice_stream_init_duplex(struct snd_dice *dice);
 178 void snd_dice_stream_destroy_duplex(struct snd_dice *dice);
 179 void snd_dice_stream_update_duplex(struct snd_dice *dice);
 180
 181 int snd_dice_stream_lock_try(struct snd_dice *dice);
 182 void snd_dice_stream_lock_release(struct snd_dice *dice);
 183
 184 int snd_dice_create_pcm(struct snd_dice *dice);
 185
 186 int snd_dice_create_hwdep(struct snd_dice *dice);
 187
 188 void snd_dice_create_proc(struct snd_dice *dice);
 189
 190 int snd_dice_create_midi(struct snd_dice *dice);
 191
 192 #endif