1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * tascam.h - a part of driver for TASCAM FireWire series 4 * 5 * Copyright (c) 2015 Takashi Sakamoto 6 */ 7 8 #ifndef SOUND_TASCAM_H_INCLUDED 9 #define SOUND_TASCAM_H_INCLUDED 10 11 #include <linux/device.h> 12 #include <linux/firewire.h> 13 #include <linux/firewire-constants.h> 14 #include <linux/module.h> 15 #include <linux/mod_devicetable.h> 16 #include <linux/mutex.h> 17 #include <linux/slab.h> 18 #include <linux/compat.h> 19 #include <linux/sched/signal.h> 20 21 #include <sound/core.h> 22 #include <sound/initval.h> 23 #include <sound/info.h> 24 #include <sound/pcm.h> 25 #include <sound/pcm_params.h> 26 #include <sound/firewire.h> 27 #include <sound/hwdep.h> 28 #include <sound/rawmidi.h> 29 30 #include "../lib.h" 31 #include "../amdtp-stream.h" 32 #include "../iso-resources.h" 33 34 struct snd_tscm_spec { 35 const char *const name; 36 bool has_adat; 37 bool has_spdif; 38 unsigned int pcm_capture_analog_channels; 39 unsigned int pcm_playback_analog_channels; 40 unsigned int midi_capture_ports; 41 unsigned int midi_playback_ports; 42 }; 43 44 #define TSCM_MIDI_IN_PORT_MAX 4 45 #define TSCM_MIDI_OUT_PORT_MAX 4 46 47 struct snd_fw_async_midi_port { 48 struct fw_device *parent; 49 struct work_struct work; 50 bool idling; 51 ktime_t next_ktime; 52 bool error; 53 54 struct fw_transaction transaction; 55 56 u8 buf[4]; 57 u8 running_status; 58 bool on_sysex; 59 60 struct snd_rawmidi_substream *substream; 61 int consume_bytes; 62 }; 63 64 #define SND_TSCM_QUEUE_COUNT 16 65 66 struct snd_tscm { 67 struct snd_card *card; 68 struct fw_unit *unit; 69 70 struct mutex mutex; 71 spinlock_t lock; 72 73 const struct snd_tscm_spec *spec; 74 75 struct fw_iso_resources tx_resources; 76 struct fw_iso_resources rx_resources; 77 struct amdtp_stream tx_stream; 78 struct amdtp_stream rx_stream; 79 unsigned int substreams_counter; 80 81 int dev_lock_count; 82 bool dev_lock_changed; 83 wait_queue_head_t hwdep_wait; 84 85 /* For MIDI message incoming transactions. */ 86 struct fw_address_handler async_handler; 87 struct snd_rawmidi_substream *tx_midi_substreams[TSCM_MIDI_IN_PORT_MAX]; 88 89 /* For MIDI message outgoing transactions. */ 90 struct snd_fw_async_midi_port out_ports[TSCM_MIDI_OUT_PORT_MAX]; 91 92 // A cache of status information in tx isoc packets. 93 __be32 state[SNDRV_FIREWIRE_TASCAM_STATE_COUNT]; 94 struct snd_hwdep *hwdep; 95 struct snd_firewire_tascam_change queue[SND_TSCM_QUEUE_COUNT]; 96 unsigned int pull_pos; 97 unsigned int push_pos; 98 99 struct amdtp_domain domain; 100 bool need_long_tx_init_skip; 101 }; 102 103 #define TSCM_ADDR_BASE 0xffff00000000ull 104 105 #define TSCM_OFFSET_FIRMWARE_REGISTER 0x0000 106 #define TSCM_OFFSET_FIRMWARE_FPGA 0x0004 107 #define TSCM_OFFSET_FIRMWARE_ARM 0x0008 108 #define TSCM_OFFSET_FIRMWARE_HW 0x000c 109 110 #define TSCM_OFFSET_ISOC_TX_CH 0x0200 111 #define TSCM_OFFSET_UNKNOWN 0x0204 112 #define TSCM_OFFSET_START_STREAMING 0x0208 113 #define TSCM_OFFSET_ISOC_RX_CH 0x020c 114 #define TSCM_OFFSET_ISOC_RX_ON 0x0210 /* Little conviction. */ 115 #define TSCM_OFFSET_TX_PCM_CHANNELS 0x0214 116 #define TSCM_OFFSET_RX_PCM_CHANNELS 0x0218 117 #define TSCM_OFFSET_MULTIPLEX_MODE 0x021c 118 #define TSCM_OFFSET_ISOC_TX_ON 0x0220 119 /* Unknown 0x0224 */ 120 #define TSCM_OFFSET_CLOCK_STATUS 0x0228 121 #define TSCM_OFFSET_SET_OPTION 0x022c 122 123 #define TSCM_OFFSET_MIDI_TX_ON 0x0300 124 #define TSCM_OFFSET_MIDI_TX_ADDR_HI 0x0304 125 #define TSCM_OFFSET_MIDI_TX_ADDR_LO 0x0308 126 127 #define TSCM_OFFSET_LED_POWER 0x0404 128 129 #define TSCM_OFFSET_MIDI_RX_QUAD 0x4000 130 131 // Although FE-8 supports the above registers, it has no I/O interfaces for 132 // audio samples and music messages. Otherwise it supports another notification 133 // for status and control message as well as LED brightening. The message 134 // consists of quadlet-aligned data up to 32 quadlets. The first byte of message 135 // is fixed to 0x40. The second byte is between 0x00 to 0x1f and represent each 136 // control: 137 // fader: 0x00-0x07 138 // button: 0x0d, 0x0e 139 // knob: 0x14-0x1b 140 // sensing: 0x0b 141 // 142 // The rest two bytes represent state of the controls; e.g. current value for 143 // fader and knob, bitmasks for button and sensing. 144 // Just after turning on, 32 quadlets messages with 0x00-0x1f are immediately 145 // sent in one transaction. After, several quadlets are sent in one transaction. 146 // 147 // TSCM_OFFSET_FE8_CTL_TX_ON 0x0310 148 // TSCM_OFFSET_FE8_CTL_TX_ADDR_HI 0x0314 149 // TSCM_OFFSET_FE8_CTL_TX_ADDR_LO 0x0318 150 151 enum snd_tscm_clock { 152 SND_TSCM_CLOCK_INTERNAL = 0, 153 SND_TSCM_CLOCK_WORD = 1, 154 SND_TSCM_CLOCK_SPDIF = 2, 155 SND_TSCM_CLOCK_ADAT = 3, 156 }; 157 158 int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit, 159 enum amdtp_stream_direction dir, unsigned int pcm_channels); 160 int amdtp_tscm_set_parameters(struct amdtp_stream *s, unsigned int rate); 161 int amdtp_tscm_add_pcm_hw_constraints(struct amdtp_stream *s, 162 struct snd_pcm_runtime *runtime); 163 164 int snd_tscm_stream_get_rate(struct snd_tscm *tscm, unsigned int *rate); 165 int snd_tscm_stream_get_clock(struct snd_tscm *tscm, 166 enum snd_tscm_clock *clock); 167 int snd_tscm_stream_init_duplex(struct snd_tscm *tscm); 168 void snd_tscm_stream_update_duplex(struct snd_tscm *tscm); 169 void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm); 170 int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate, 171 unsigned int frames_per_period, 172 unsigned int frames_per_buffer); 173 int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate); 174 void snd_tscm_stream_stop_duplex(struct snd_tscm *tscm); 175 176 void snd_tscm_stream_lock_changed(struct snd_tscm *tscm); 177 int snd_tscm_stream_lock_try(struct snd_tscm *tscm); 178 void snd_tscm_stream_lock_release(struct snd_tscm *tscm); 179 180 void snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port); 181 182 static inline void 183 snd_fw_async_midi_port_run(struct snd_fw_async_midi_port *port, 184 struct snd_rawmidi_substream *substream) 185 { 186 if (!port->error) { 187 port->substream = substream; 188 schedule_work(&port->work); 189 } 190 } 191 192 static inline void 193 snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port *port) 194 { 195 port->substream = NULL; 196 cancel_work_sync(&port->work); 197 port->error = false; 198 } 199 200 int snd_tscm_transaction_register(struct snd_tscm *tscm); 201 int snd_tscm_transaction_reregister(struct snd_tscm *tscm); 202 void snd_tscm_transaction_unregister(struct snd_tscm *tscm); 203 204 void snd_tscm_proc_init(struct snd_tscm *tscm); 205 206 int snd_tscm_create_pcm_devices(struct snd_tscm *tscm); 207 208 int snd_tscm_create_midi_devices(struct snd_tscm *tscm); 209 210 int snd_tscm_create_hwdep_device(struct snd_tscm *tscm); 211 212 #endif 213