1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * dice.h - a part of driver for Dice based devices 4 * 5 * Copyright (c) Clemens Ladisch 6 * Copyright (c) 2014 Takashi Sakamoto 7 */ 8 9 #ifndef SOUND_DICE_H_INCLUDED 10 #define SOUND_DICE_H_INCLUDED 11 12 #include <linux/compat.h> 13 #include <linux/completion.h> 14 #include <linux/delay.h> 15 #include <linux/device.h> 16 #include <linux/firewire.h> 17 #include <linux/firewire-constants.h> 18 #include <linux/jiffies.h> 19 #include <linux/module.h> 20 #include <linux/mod_devicetable.h> 21 #include <linux/mutex.h> 22 #include <linux/slab.h> 23 #include <linux/spinlock.h> 24 #include <linux/wait.h> 25 #include <linux/sched/signal.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 /* 43 * This module support maximum 2 pairs of tx/rx isochronous streams for 44 * our convinience. 45 * 46 * In documents for ASICs called with a name of 'DICE': 47 * - ASIC for DICE II: 48 * - Maximum 2 tx and 4 rx are supported. 49 * - A packet supports maximum 16 data channels. 50 * - TCD2210/2210-E (so-called 'Dice Mini'): 51 * - Maximum 2 tx and 2 rx are supported. 52 * - A packet supports maximum 16 data channels. 53 * - TCD2220/2220-E (so-called 'Dice Jr.') 54 * - 2 tx and 2 rx are supported. 55 * - A packet supports maximum 16 data channels. 56 * - TCD3070-CH (so-called 'Dice III') 57 * - Maximum 2 tx and 2 rx are supported. 58 * - A packet supports maximum 32 data channels. 59 * 60 * For the above, MIDI conformant data channel is just on the first isochronous 61 * stream. 62 */ 63 #define MAX_STREAMS 2 64 65 enum snd_dice_rate_mode { 66 SND_DICE_RATE_MODE_LOW = 0, 67 SND_DICE_RATE_MODE_MIDDLE, 68 SND_DICE_RATE_MODE_HIGH, 69 SND_DICE_RATE_MODE_COUNT, 70 }; 71 72 struct snd_dice; 73 typedef int (*snd_dice_detect_formats_t)(struct snd_dice *dice); 74 75 struct snd_dice { 76 struct snd_card *card; 77 struct fw_unit *unit; 78 spinlock_t lock; 79 struct mutex mutex; 80 81 bool registered; 82 struct delayed_work dwork; 83 84 /* Offsets for sub-addresses */ 85 unsigned int global_offset; 86 unsigned int rx_offset; 87 unsigned int tx_offset; 88 unsigned int sync_offset; 89 unsigned int rsrv_offset; 90 91 unsigned int clock_caps; 92 unsigned int tx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT]; 93 unsigned int rx_pcm_chs[MAX_STREAMS][SND_DICE_RATE_MODE_COUNT]; 94 unsigned int tx_midi_ports[MAX_STREAMS]; 95 unsigned int rx_midi_ports[MAX_STREAMS]; 96 snd_dice_detect_formats_t detect_formats; 97 98 struct fw_address_handler notification_handler; 99 int owner_generation; 100 u32 notification_bits; 101 102 /* For uapi */ 103 int dev_lock_count; /* > 0 driver, < 0 userspace */ 104 bool dev_lock_changed; 105 wait_queue_head_t hwdep_wait; 106 107 /* For streaming */ 108 struct fw_iso_resources tx_resources[MAX_STREAMS]; 109 struct fw_iso_resources rx_resources[MAX_STREAMS]; 110 struct amdtp_stream tx_stream[MAX_STREAMS]; 111 struct amdtp_stream rx_stream[MAX_STREAMS]; 112 bool global_enabled:1; 113 bool disable_double_pcm_frames:1; 114 struct completion clock_accepted; 115 unsigned int substreams_counter; 116 117 struct amdtp_domain domain; 118 }; 119 120 enum snd_dice_addr_type { 121 SND_DICE_ADDR_TYPE_PRIVATE, 122 SND_DICE_ADDR_TYPE_GLOBAL, 123 SND_DICE_ADDR_TYPE_TX, 124 SND_DICE_ADDR_TYPE_RX, 125 SND_DICE_ADDR_TYPE_SYNC, 126 SND_DICE_ADDR_TYPE_RSRV, 127 }; 128 129 int snd_dice_transaction_write(struct snd_dice *dice, 130 enum snd_dice_addr_type type, 131 unsigned int offset, 132 void *buf, unsigned int len); 133 int snd_dice_transaction_read(struct snd_dice *dice, 134 enum snd_dice_addr_type type, unsigned int offset, 135 void *buf, unsigned int len); 136 137 static inline int snd_dice_transaction_write_global(struct snd_dice *dice, 138 unsigned int offset, 139 void *buf, unsigned int len) 140 { 141 return snd_dice_transaction_write(dice, 142 SND_DICE_ADDR_TYPE_GLOBAL, offset, 143 buf, len); 144 } 145 static inline int snd_dice_transaction_read_global(struct snd_dice *dice, 146 unsigned int offset, 147 void *buf, unsigned int len) 148 { 149 return snd_dice_transaction_read(dice, 150 SND_DICE_ADDR_TYPE_GLOBAL, offset, 151 buf, len); 152 } 153 static inline int snd_dice_transaction_write_tx(struct snd_dice *dice, 154 unsigned int offset, 155 void *buf, unsigned int len) 156 { 157 return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_TX, offset, 158 buf, len); 159 } 160 static inline int snd_dice_transaction_read_tx(struct snd_dice *dice, 161 unsigned int offset, 162 void *buf, unsigned int len) 163 { 164 return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_TX, offset, 165 buf, len); 166 } 167 static inline int snd_dice_transaction_write_rx(struct snd_dice *dice, 168 unsigned int offset, 169 void *buf, unsigned int len) 170 { 171 return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_RX, offset, 172 buf, len); 173 } 174 static inline int snd_dice_transaction_read_rx(struct snd_dice *dice, 175 unsigned int offset, 176 void *buf, unsigned int len) 177 { 178 return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_RX, offset, 179 buf, len); 180 } 181 static inline int snd_dice_transaction_write_sync(struct snd_dice *dice, 182 unsigned int offset, 183 void *buf, unsigned int len) 184 { 185 return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_SYNC, offset, 186 buf, len); 187 } 188 static inline int snd_dice_transaction_read_sync(struct snd_dice *dice, 189 unsigned int offset, 190 void *buf, unsigned int len) 191 { 192 return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_SYNC, offset, 193 buf, len); 194 } 195 196 int snd_dice_transaction_get_clock_source(struct snd_dice *dice, 197 unsigned int *source); 198 int snd_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate); 199 int snd_dice_transaction_set_enable(struct snd_dice *dice); 200 void snd_dice_transaction_clear_enable(struct snd_dice *dice); 201 int snd_dice_transaction_init(struct snd_dice *dice); 202 int snd_dice_transaction_reinit(struct snd_dice *dice); 203 void snd_dice_transaction_destroy(struct snd_dice *dice); 204 205 #define SND_DICE_RATES_COUNT 7 206 extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT]; 207 208 int snd_dice_stream_get_rate_mode(struct snd_dice *dice, unsigned int rate, 209 enum snd_dice_rate_mode *mode); 210 int snd_dice_stream_start_duplex(struct snd_dice *dice); 211 void snd_dice_stream_stop_duplex(struct snd_dice *dice); 212 int snd_dice_stream_init_duplex(struct snd_dice *dice); 213 void snd_dice_stream_destroy_duplex(struct snd_dice *dice); 214 int snd_dice_stream_reserve_duplex(struct snd_dice *dice, unsigned int rate, 215 unsigned int events_per_period, 216 unsigned int events_per_buffer); 217 void snd_dice_stream_update_duplex(struct snd_dice *dice); 218 int snd_dice_stream_detect_current_formats(struct snd_dice *dice); 219 220 int snd_dice_stream_lock_try(struct snd_dice *dice); 221 void snd_dice_stream_lock_release(struct snd_dice *dice); 222 223 int snd_dice_create_pcm(struct snd_dice *dice); 224 225 int snd_dice_create_hwdep(struct snd_dice *dice); 226 227 void snd_dice_create_proc(struct snd_dice *dice); 228 229 int snd_dice_create_midi(struct snd_dice *dice); 230 231 int snd_dice_detect_tcelectronic_formats(struct snd_dice *dice); 232 int snd_dice_detect_alesis_formats(struct snd_dice *dice); 233 int snd_dice_detect_alesis_mastercontrol_formats(struct snd_dice *dice); 234 int snd_dice_detect_extension_formats(struct snd_dice *dice); 235 int snd_dice_detect_mytek_formats(struct snd_dice *dice); 236 int snd_dice_detect_presonus_formats(struct snd_dice *dice); 237 int snd_dice_detect_harman_formats(struct snd_dice *dice); 238 239 #endif 240