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 rx_channels[3]; 56 unsigned int rx_midi_ports[3]; 57 struct fw_address_handler notification_handler; 58 int owner_generation; 59 int dev_lock_count; /* > 0 driver, < 0 userspace */ 60 bool dev_lock_changed; 61 bool global_enabled; 62 struct completion clock_accepted; 63 wait_queue_head_t hwdep_wait; 64 u32 notification_bits; 65 struct fw_iso_resources rx_resources; 66 struct amdtp_stream rx_stream; 67 }; 68 69 enum snd_dice_addr_type { 70 SND_DICE_ADDR_TYPE_PRIVATE, 71 SND_DICE_ADDR_TYPE_GLOBAL, 72 SND_DICE_ADDR_TYPE_TX, 73 SND_DICE_ADDR_TYPE_RX, 74 SND_DICE_ADDR_TYPE_SYNC, 75 SND_DICE_ADDR_TYPE_RSRV, 76 }; 77 78 int snd_dice_transaction_write(struct snd_dice *dice, 79 enum snd_dice_addr_type type, 80 unsigned int offset, 81 void *buf, unsigned int len); 82 int snd_dice_transaction_read(struct snd_dice *dice, 83 enum snd_dice_addr_type type, unsigned int offset, 84 void *buf, unsigned int len); 85 86 static inline int snd_dice_transaction_write_global(struct snd_dice *dice, 87 unsigned int offset, 88 void *buf, unsigned int len) 89 { 90 return snd_dice_transaction_write(dice, 91 SND_DICE_ADDR_TYPE_GLOBAL, offset, 92 buf, len); 93 } 94 static inline int snd_dice_transaction_read_global(struct snd_dice *dice, 95 unsigned int offset, 96 void *buf, unsigned int len) 97 { 98 return snd_dice_transaction_read(dice, 99 SND_DICE_ADDR_TYPE_GLOBAL, offset, 100 buf, len); 101 } 102 static inline int snd_dice_transaction_write_tx(struct snd_dice *dice, 103 unsigned int offset, 104 void *buf, unsigned int len) 105 { 106 return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_TX, offset, 107 buf, len); 108 } 109 static inline int snd_dice_transaction_read_tx(struct snd_dice *dice, 110 unsigned int offset, 111 void *buf, unsigned int len) 112 { 113 return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_TX, offset, 114 buf, len); 115 } 116 static inline int snd_dice_transaction_write_rx(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_RX, offset, 121 buf, len); 122 } 123 static inline int snd_dice_transaction_read_rx(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_RX, offset, 128 buf, len); 129 } 130 static inline int snd_dice_transaction_write_sync(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_SYNC, offset, 135 buf, len); 136 } 137 static inline int snd_dice_transaction_read_sync(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_SYNC, offset, 142 buf, len); 143 } 144 145 int snd_dice_transaction_set_clock_source(struct snd_dice *dice, 146 unsigned int source); 147 int snd_dice_transaction_get_clock_source(struct snd_dice *dice, 148 unsigned int *source); 149 int snd_dice_transaction_set_rate(struct snd_dice *dice, unsigned int rate); 150 int snd_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate); 151 int snd_dice_transaction_set_enable(struct snd_dice *dice); 152 void snd_dice_transaction_clear_enable(struct snd_dice *dice); 153 int snd_dice_transaction_init(struct snd_dice *dice); 154 int snd_dice_transaction_reinit(struct snd_dice *dice); 155 void snd_dice_transaction_destroy(struct snd_dice *dice); 156 157 #define SND_DICE_RATES_COUNT 7 158 extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT]; 159 160 int snd_dice_stream_get_rate_mode(struct snd_dice *dice, 161 unsigned int rate, unsigned int *mode); 162 163 int snd_dice_stream_start_packets(struct snd_dice *dice); 164 int snd_dice_stream_start(struct snd_dice *dice); 165 void snd_dice_stream_stop_packets(struct snd_dice *dice); 166 void snd_dice_stream_stop(struct snd_dice *dice); 167 int snd_dice_stream_init(struct snd_dice *dice); 168 void snd_dice_stream_destroy(struct snd_dice *dice); 169 void snd_dice_stream_update(struct snd_dice *dice); 170 171 int snd_dice_stream_lock_try(struct snd_dice *dice); 172 void snd_dice_stream_lock_release(struct snd_dice *dice); 173 174 int snd_dice_create_pcm(struct snd_dice *dice); 175 176 int snd_dice_create_hwdep(struct snd_dice *dice); 177 178 void snd_dice_create_proc(struct snd_dice *dice); 179 180 #endif 181