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 bool registered;
74 struct delayed_work dwork;
75 const struct snd_tscm_spec *spec;
76
77 struct fw_iso_resources tx_resources;
78 struct fw_iso_resources rx_resources;
79 struct amdtp_stream tx_stream;
80 struct amdtp_stream rx_stream;
81 unsigned int substreams_counter;
82
83 int dev_lock_count;
84 bool dev_lock_changed;
85 wait_queue_head_t hwdep_wait;
86
87 /* For MIDI message incoming transactions. */
88 struct fw_address_handler async_handler;
89 struct snd_rawmidi_substream *tx_midi_substreams[TSCM_MIDI_IN_PORT_MAX];
90
91 /* For MIDI message outgoing transactions. */
92 struct snd_fw_async_midi_port out_ports[TSCM_MIDI_OUT_PORT_MAX];
93
94 // A cache of status information in tx isoc packets.
95 __be32 state[SNDRV_FIREWIRE_TASCAM_STATE_COUNT];
96 struct snd_hwdep *hwdep;
97 struct snd_firewire_tascam_change queue[SND_TSCM_QUEUE_COUNT];
98 unsigned int pull_pos;
99 unsigned int push_pos;
100
101 struct amdtp_domain domain;
102 };
103
104 #define TSCM_ADDR_BASE 0xffff00000000ull
105
106 #define TSCM_OFFSET_FIRMWARE_REGISTER 0x0000
107 #define TSCM_OFFSET_FIRMWARE_FPGA 0x0004
108 #define TSCM_OFFSET_FIRMWARE_ARM 0x0008
109 #define TSCM_OFFSET_FIRMWARE_HW 0x000c
110
111 #define TSCM_OFFSET_ISOC_TX_CH 0x0200
112 #define TSCM_OFFSET_UNKNOWN 0x0204
113 #define TSCM_OFFSET_START_STREAMING 0x0208
114 #define TSCM_OFFSET_ISOC_RX_CH 0x020c
115 #define TSCM_OFFSET_ISOC_RX_ON 0x0210 /* Little conviction. */
116 #define TSCM_OFFSET_TX_PCM_CHANNELS 0x0214
117 #define TSCM_OFFSET_RX_PCM_CHANNELS 0x0218
118 #define TSCM_OFFSET_MULTIPLEX_MODE 0x021c
119 #define TSCM_OFFSET_ISOC_TX_ON 0x0220
120 /* Unknown 0x0224 */
121 #define TSCM_OFFSET_CLOCK_STATUS 0x0228
122 #define TSCM_OFFSET_SET_OPTION 0x022c
123
124 #define TSCM_OFFSET_MIDI_TX_ON 0x0300
125 #define TSCM_OFFSET_MIDI_TX_ADDR_HI 0x0304
126 #define TSCM_OFFSET_MIDI_TX_ADDR_LO 0x0308
127
128 #define TSCM_OFFSET_LED_POWER 0x0404
129
130 #define TSCM_OFFSET_MIDI_RX_QUAD 0x4000
131
132 // Although FE-8 supports the above registers, it has no I/O interfaces for
133 // audio samples and music messages. Otherwise it supports another notification
134 // for status and control message as well as LED brightening. The message
135 // consists of quadlet-aligned data up to 32 quadlets. The first byte of message
136 // is fixed to 0x40. The second byte is between 0x00 to 0x1f and represent each
137 // control:
138 // fader: 0x00-0x07
139 // button: 0x0d, 0x0e
140 // knob: 0x14-0x1b
141 // sensing: 0x0b
142 //
143 // The rest two bytes represent state of the controls; e.g. current value for
144 // fader and knob, bitmasks for button and sensing.
145 // Just after turning on, 32 quadlets messages with 0x00-0x1f are immediately
146 // sent in one transaction. After, several quadlets are sent in one transaction.
147 //
148 // TSCM_OFFSET_FE8_CTL_TX_ON 0x0310
149 // TSCM_OFFSET_FE8_CTL_TX_ADDR_HI 0x0314
150 // TSCM_OFFSET_FE8_CTL_TX_ADDR_LO 0x0318
151
152 enum snd_tscm_clock {
153 SND_TSCM_CLOCK_INTERNAL = 0,
154 SND_TSCM_CLOCK_WORD = 1,
155 SND_TSCM_CLOCK_SPDIF = 2,
156 SND_TSCM_CLOCK_ADAT = 3,
157 };
158
159 int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit,
160 enum amdtp_stream_direction dir, unsigned int pcm_channels);
161 int amdtp_tscm_set_parameters(struct amdtp_stream *s, unsigned int rate);
162 int amdtp_tscm_add_pcm_hw_constraints(struct amdtp_stream *s,
163 struct snd_pcm_runtime *runtime);
164
165 int snd_tscm_stream_get_rate(struct snd_tscm *tscm, unsigned int *rate);
166 int snd_tscm_stream_get_clock(struct snd_tscm *tscm,
167 enum snd_tscm_clock *clock);
168 int snd_tscm_stream_init_duplex(struct snd_tscm *tscm);
169 void snd_tscm_stream_update_duplex(struct snd_tscm *tscm);
170 void snd_tscm_stream_destroy_duplex(struct snd_tscm *tscm);
171 int snd_tscm_stream_reserve_duplex(struct snd_tscm *tscm, unsigned int rate,
172 unsigned int frames_per_period,
173 unsigned int frames_per_buffer);
174 int snd_tscm_stream_start_duplex(struct snd_tscm *tscm, unsigned int rate);
175 void snd_tscm_stream_stop_duplex(struct snd_tscm *tscm);
176
177 void snd_tscm_stream_lock_changed(struct snd_tscm *tscm);
178 int snd_tscm_stream_lock_try(struct snd_tscm *tscm);
179 void snd_tscm_stream_lock_release(struct snd_tscm *tscm);
180
181 void snd_fw_async_midi_port_init(struct snd_fw_async_midi_port *port);
182
183 static inline void
snd_fw_async_midi_port_run(struct snd_fw_async_midi_port * port,struct snd_rawmidi_substream * substream)184 snd_fw_async_midi_port_run(struct snd_fw_async_midi_port *port,
185 struct snd_rawmidi_substream *substream)
186 {
187 if (!port->error) {
188 port->substream = substream;
189 schedule_work(&port->work);
190 }
191 }
192
193 static inline void
snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port * port)194 snd_fw_async_midi_port_finish(struct snd_fw_async_midi_port *port)
195 {
196 port->substream = NULL;
197 cancel_work_sync(&port->work);
198 port->error = false;
199 }
200
201 int snd_tscm_transaction_register(struct snd_tscm *tscm);
202 int snd_tscm_transaction_reregister(struct snd_tscm *tscm);
203 void snd_tscm_transaction_unregister(struct snd_tscm *tscm);
204
205 void snd_tscm_proc_init(struct snd_tscm *tscm);
206
207 int snd_tscm_create_pcm_devices(struct snd_tscm *tscm);
208
209 int snd_tscm_create_midi_devices(struct snd_tscm *tscm);
210
211 int snd_tscm_create_hwdep_device(struct snd_tscm *tscm);
212
213 #endif
214