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 36 #include "../amdtp.h" 37 #include "../iso-resources.h" 38 #include "../lib.h" 39 #include "dice-interface.h" 40 41 struct snd_dice { 42 struct snd_card *card; 43 struct fw_unit *unit; 44 spinlock_t lock; 45 struct mutex mutex; 46 47 /* Offsets for sub-addresses */ 48 unsigned int global_offset; 49 unsigned int rx_offset; 50 unsigned int tx_offset; 51 unsigned int sync_offset; 52 unsigned int rsrv_offset; 53 54 unsigned int clock_caps; 55 unsigned int tx_channels[3]; 56 unsigned int rx_channels[3]; 57 unsigned int tx_midi_ports[3]; 58 unsigned int rx_midi_ports[3]; 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_set_rate(struct snd_dice *dice, unsigned int rate); 158 int snd_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate); 159 int snd_dice_transaction_set_enable(struct snd_dice *dice); 160 void snd_dice_transaction_clear_enable(struct snd_dice *dice); 161 int snd_dice_transaction_init(struct snd_dice *dice); 162 int snd_dice_transaction_reinit(struct snd_dice *dice); 163 void snd_dice_transaction_destroy(struct snd_dice *dice); 164 165 #define SND_DICE_RATES_COUNT 7 166 extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT]; 167 168 int snd_dice_stream_get_rate_mode(struct snd_dice *dice, 169 unsigned int rate, unsigned int *mode); 170 171 int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate); 172 void snd_dice_stream_stop_duplex(struct snd_dice *dice); 173 int snd_dice_stream_init_duplex(struct snd_dice *dice); 174 void snd_dice_stream_destroy_duplex(struct snd_dice *dice); 175 void snd_dice_stream_update_duplex(struct snd_dice *dice); 176 177 int snd_dice_stream_lock_try(struct snd_dice *dice); 178 void snd_dice_stream_lock_release(struct snd_dice *dice); 179 180 int snd_dice_create_pcm(struct snd_dice *dice); 181 182 int snd_dice_create_hwdep(struct snd_dice *dice); 183 184 void snd_dice_create_proc(struct snd_dice *dice); 185 186 #endif 187