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.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 /* Offsets for sub-addresses */ 49 unsigned int global_offset; 50 unsigned int rx_offset; 51 unsigned int tx_offset; 52 unsigned int sync_offset; 53 unsigned int rsrv_offset; 54 55 unsigned int clock_caps; 56 unsigned int tx_channels[3]; 57 unsigned int rx_channels[3]; 58 unsigned int tx_midi_ports[3]; 59 unsigned int rx_midi_ports[3]; 60 61 struct fw_address_handler notification_handler; 62 int owner_generation; 63 u32 notification_bits; 64 65 /* For uapi */ 66 int dev_lock_count; /* > 0 driver, < 0 userspace */ 67 bool dev_lock_changed; 68 wait_queue_head_t hwdep_wait; 69 70 /* For streaming */ 71 struct fw_iso_resources tx_resources; 72 struct fw_iso_resources rx_resources; 73 struct amdtp_stream tx_stream; 74 struct amdtp_stream rx_stream; 75 bool global_enabled; 76 struct completion clock_accepted; 77 unsigned int substreams_counter; 78 }; 79 80 enum snd_dice_addr_type { 81 SND_DICE_ADDR_TYPE_PRIVATE, 82 SND_DICE_ADDR_TYPE_GLOBAL, 83 SND_DICE_ADDR_TYPE_TX, 84 SND_DICE_ADDR_TYPE_RX, 85 SND_DICE_ADDR_TYPE_SYNC, 86 SND_DICE_ADDR_TYPE_RSRV, 87 }; 88 89 int snd_dice_transaction_write(struct snd_dice *dice, 90 enum snd_dice_addr_type type, 91 unsigned int offset, 92 void *buf, unsigned int len); 93 int snd_dice_transaction_read(struct snd_dice *dice, 94 enum snd_dice_addr_type type, unsigned int offset, 95 void *buf, unsigned int len); 96 97 static inline int snd_dice_transaction_write_global(struct snd_dice *dice, 98 unsigned int offset, 99 void *buf, unsigned int len) 100 { 101 return snd_dice_transaction_write(dice, 102 SND_DICE_ADDR_TYPE_GLOBAL, offset, 103 buf, len); 104 } 105 static inline int snd_dice_transaction_read_global(struct snd_dice *dice, 106 unsigned int offset, 107 void *buf, unsigned int len) 108 { 109 return snd_dice_transaction_read(dice, 110 SND_DICE_ADDR_TYPE_GLOBAL, offset, 111 buf, len); 112 } 113 static inline int snd_dice_transaction_write_tx(struct snd_dice *dice, 114 unsigned int offset, 115 void *buf, unsigned int len) 116 { 117 return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_TX, offset, 118 buf, len); 119 } 120 static inline int snd_dice_transaction_read_tx(struct snd_dice *dice, 121 unsigned int offset, 122 void *buf, unsigned int len) 123 { 124 return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_TX, offset, 125 buf, len); 126 } 127 static inline int snd_dice_transaction_write_rx(struct snd_dice *dice, 128 unsigned int offset, 129 void *buf, unsigned int len) 130 { 131 return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_RX, offset, 132 buf, len); 133 } 134 static inline int snd_dice_transaction_read_rx(struct snd_dice *dice, 135 unsigned int offset, 136 void *buf, unsigned int len) 137 { 138 return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_RX, offset, 139 buf, len); 140 } 141 static inline int snd_dice_transaction_write_sync(struct snd_dice *dice, 142 unsigned int offset, 143 void *buf, unsigned int len) 144 { 145 return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_SYNC, offset, 146 buf, len); 147 } 148 static inline int snd_dice_transaction_read_sync(struct snd_dice *dice, 149 unsigned int offset, 150 void *buf, unsigned int len) 151 { 152 return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_SYNC, offset, 153 buf, len); 154 } 155 156 int snd_dice_transaction_get_clock_source(struct snd_dice *dice, 157 unsigned int *source); 158 int snd_dice_transaction_set_rate(struct snd_dice *dice, unsigned int rate); 159 int snd_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate); 160 int snd_dice_transaction_set_enable(struct snd_dice *dice); 161 void snd_dice_transaction_clear_enable(struct snd_dice *dice); 162 int snd_dice_transaction_init(struct snd_dice *dice); 163 int snd_dice_transaction_reinit(struct snd_dice *dice); 164 void snd_dice_transaction_destroy(struct snd_dice *dice); 165 166 #define SND_DICE_RATES_COUNT 7 167 extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT]; 168 169 int snd_dice_stream_get_rate_mode(struct snd_dice *dice, 170 unsigned int rate, unsigned int *mode); 171 172 int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate); 173 void snd_dice_stream_stop_duplex(struct snd_dice *dice); 174 int snd_dice_stream_init_duplex(struct snd_dice *dice); 175 void snd_dice_stream_destroy_duplex(struct snd_dice *dice); 176 void snd_dice_stream_update_duplex(struct snd_dice *dice); 177 178 int snd_dice_stream_lock_try(struct snd_dice *dice); 179 void snd_dice_stream_lock_release(struct snd_dice *dice); 180 181 int snd_dice_create_pcm(struct snd_dice *dice); 182 183 int snd_dice_create_hwdep(struct snd_dice *dice); 184 185 void snd_dice_create_proc(struct snd_dice *dice); 186 187 int snd_dice_create_midi(struct snd_dice *dice); 188 189 #endif 190