1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * motu.h - a part of driver for MOTU FireWire series
4 *
5 * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
6 */
7
8 #ifndef SOUND_FIREWIRE_MOTU_H_INCLUDED
9 #define SOUND_FIREWIRE_MOTU_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/control.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/info.h>
25 #include <sound/rawmidi.h>
26 #include <sound/firewire.h>
27 #include <sound/hwdep.h>
28
29 #include "../lib.h"
30 #include "../amdtp-stream.h"
31 #include "../iso-resources.h"
32
33 struct snd_motu_packet_format {
34 unsigned char midi_flag_offset;
35 unsigned char midi_byte_offset;
36 unsigned char pcm_byte_offset;
37
38 unsigned char msg_chunks;
39 unsigned char pcm_chunks[3];
40 };
41
42 struct amdtp_motu_cache {
43 unsigned int *event_offsets;
44 unsigned int size;
45 unsigned int tail;
46 unsigned int tx_cycle_count;
47 unsigned int head;
48 unsigned int rx_cycle_count;
49 };
50
51 struct snd_motu {
52 struct snd_card *card;
53 struct fw_unit *unit;
54 struct mutex mutex;
55 spinlock_t lock;
56
57 /* Model dependent information. */
58 const struct snd_motu_spec *spec;
59
60 /* For packet streaming */
61 struct snd_motu_packet_format tx_packet_formats;
62 struct snd_motu_packet_format rx_packet_formats;
63 struct amdtp_stream tx_stream;
64 struct amdtp_stream rx_stream;
65 struct fw_iso_resources tx_resources;
66 struct fw_iso_resources rx_resources;
67 unsigned int substreams_counter;
68
69 /* For notification. */
70 struct fw_address_handler async_handler;
71 u32 msg;
72
73 /* For uapi */
74 int dev_lock_count;
75 bool dev_lock_changed;
76 wait_queue_head_t hwdep_wait;
77 struct snd_hwdep *hwdep;
78
79 struct amdtp_domain domain;
80
81 struct amdtp_motu_cache cache;
82
83 void *message_parser;
84 };
85
86 enum snd_motu_spec_flags {
87 SND_MOTU_SPEC_RX_MIDI_2ND_Q = 0x0001,
88 SND_MOTU_SPEC_RX_MIDI_3RD_Q = 0x0002,
89 SND_MOTU_SPEC_TX_MIDI_2ND_Q = 0x0004,
90 SND_MOTU_SPEC_TX_MIDI_3RD_Q = 0x0008,
91 SND_MOTU_SPEC_REGISTER_DSP = 0x0010,
92 SND_MOTU_SPEC_COMMAND_DSP = 0x0020,
93 };
94
95 #define SND_MOTU_CLOCK_RATE_COUNT 6
96 extern const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT];
97
98 enum snd_motu_clock_source {
99 SND_MOTU_CLOCK_SOURCE_INTERNAL,
100 SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB,
101 SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT,
102 SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A,
103 SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B,
104 SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT,
105 SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A,
106 SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B,
107 SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX,
108 SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR,
109 SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC,
110 SND_MOTU_CLOCK_SOURCE_SPH,
111 SND_MOTU_CLOCK_SOURCE_UNKNOWN,
112 };
113
114 enum snd_motu_protocol_version {
115 SND_MOTU_PROTOCOL_V1,
116 SND_MOTU_PROTOCOL_V2,
117 SND_MOTU_PROTOCOL_V3,
118 };
119
120 struct snd_motu_spec {
121 const char *const name;
122 enum snd_motu_protocol_version protocol_version;
123 // The combination of snd_motu_spec_flags enumeration-constants.
124 unsigned int flags;
125
126 unsigned char tx_fixed_pcm_chunks[3];
127 unsigned char rx_fixed_pcm_chunks[3];
128 };
129
130 extern const struct snd_motu_spec snd_motu_spec_828;
131 extern const struct snd_motu_spec snd_motu_spec_896;
132
133 extern const struct snd_motu_spec snd_motu_spec_828mk2;
134 extern const struct snd_motu_spec snd_motu_spec_896hd;
135 extern const struct snd_motu_spec snd_motu_spec_traveler;
136 extern const struct snd_motu_spec snd_motu_spec_ultralite;
137 extern const struct snd_motu_spec snd_motu_spec_8pre;
138
139 extern const struct snd_motu_spec snd_motu_spec_828mk3_fw;
140 extern const struct snd_motu_spec snd_motu_spec_828mk3_hybrid;
141 extern const struct snd_motu_spec snd_motu_spec_traveler_mk3;
142 extern const struct snd_motu_spec snd_motu_spec_ultralite_mk3;
143 extern const struct snd_motu_spec snd_motu_spec_audio_express;
144 extern const struct snd_motu_spec snd_motu_spec_track16;
145 extern const struct snd_motu_spec snd_motu_spec_4pre;
146
147 int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
148 enum amdtp_stream_direction dir,
149 const struct snd_motu_spec *spec,
150 struct amdtp_motu_cache *cache);
151 int amdtp_motu_set_parameters(struct amdtp_stream *s, unsigned int rate,
152 unsigned int midi_ports,
153 struct snd_motu_packet_format *formats);
154 int amdtp_motu_add_pcm_hw_constraints(struct amdtp_stream *s,
155 struct snd_pcm_runtime *runtime);
156 void amdtp_motu_midi_trigger(struct amdtp_stream *s, unsigned int port,
157 struct snd_rawmidi_substream *midi);
158
159 int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg,
160 size_t size);
161 int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg,
162 size_t size);
163 int snd_motu_transaction_register(struct snd_motu *motu);
164 int snd_motu_transaction_reregister(struct snd_motu *motu);
165 void snd_motu_transaction_unregister(struct snd_motu *motu);
166
167 int snd_motu_stream_init_duplex(struct snd_motu *motu);
168 void snd_motu_stream_destroy_duplex(struct snd_motu *motu);
169 int snd_motu_stream_cache_packet_formats(struct snd_motu *motu);
170 int snd_motu_stream_reserve_duplex(struct snd_motu *motu, unsigned int rate,
171 unsigned int frames_per_period,
172 unsigned int frames_per_buffer);
173 int snd_motu_stream_start_duplex(struct snd_motu *motu);
174 void snd_motu_stream_stop_duplex(struct snd_motu *motu);
175 int snd_motu_stream_lock_try(struct snd_motu *motu);
176 void snd_motu_stream_lock_release(struct snd_motu *motu);
177
178 void snd_motu_proc_init(struct snd_motu *motu);
179
180 int snd_motu_create_pcm_devices(struct snd_motu *motu);
181
182 int snd_motu_create_midi_devices(struct snd_motu *motu);
183
184 int snd_motu_create_hwdep_device(struct snd_motu *motu);
185
186 int snd_motu_protocol_v1_get_clock_rate(struct snd_motu *motu,
187 unsigned int *rate);
188 int snd_motu_protocol_v1_set_clock_rate(struct snd_motu *motu,
189 unsigned int rate);
190 int snd_motu_protocol_v1_get_clock_source(struct snd_motu *motu,
191 enum snd_motu_clock_source *src);
192 int snd_motu_protocol_v1_switch_fetching_mode(struct snd_motu *motu,
193 bool enable);
194 int snd_motu_protocol_v1_cache_packet_formats(struct snd_motu *motu);
195
196 int snd_motu_protocol_v2_get_clock_rate(struct snd_motu *motu,
197 unsigned int *rate);
198 int snd_motu_protocol_v2_set_clock_rate(struct snd_motu *motu,
199 unsigned int rate);
200 int snd_motu_protocol_v2_get_clock_source(struct snd_motu *motu,
201 enum snd_motu_clock_source *src);
202 int snd_motu_protocol_v2_switch_fetching_mode(struct snd_motu *motu,
203 bool enable);
204 int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu);
205
206 int snd_motu_protocol_v3_get_clock_rate(struct snd_motu *motu,
207 unsigned int *rate);
208 int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu,
209 unsigned int rate);
210 int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu,
211 enum snd_motu_clock_source *src);
212 int snd_motu_protocol_v3_switch_fetching_mode(struct snd_motu *motu,
213 bool enable);
214 int snd_motu_protocol_v3_cache_packet_formats(struct snd_motu *motu);
215
snd_motu_protocol_get_clock_rate(struct snd_motu * motu,unsigned int * rate)216 static inline int snd_motu_protocol_get_clock_rate(struct snd_motu *motu,
217 unsigned int *rate)
218 {
219 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
220 return snd_motu_protocol_v2_get_clock_rate(motu, rate);
221 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
222 return snd_motu_protocol_v3_get_clock_rate(motu, rate);
223 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
224 return snd_motu_protocol_v1_get_clock_rate(motu, rate);
225 else
226 return -ENXIO;
227 }
228
snd_motu_protocol_set_clock_rate(struct snd_motu * motu,unsigned int rate)229 static inline int snd_motu_protocol_set_clock_rate(struct snd_motu *motu,
230 unsigned int rate)
231 {
232 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
233 return snd_motu_protocol_v2_set_clock_rate(motu, rate);
234 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
235 return snd_motu_protocol_v3_set_clock_rate(motu, rate);
236 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
237 return snd_motu_protocol_v1_set_clock_rate(motu, rate);
238 else
239 return -ENXIO;
240 }
241
snd_motu_protocol_get_clock_source(struct snd_motu * motu,enum snd_motu_clock_source * source)242 static inline int snd_motu_protocol_get_clock_source(struct snd_motu *motu,
243 enum snd_motu_clock_source *source)
244 {
245 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
246 return snd_motu_protocol_v2_get_clock_source(motu, source);
247 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
248 return snd_motu_protocol_v3_get_clock_source(motu, source);
249 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
250 return snd_motu_protocol_v1_get_clock_source(motu, source);
251 else
252 return -ENXIO;
253 }
254
snd_motu_protocol_switch_fetching_mode(struct snd_motu * motu,bool enable)255 static inline int snd_motu_protocol_switch_fetching_mode(struct snd_motu *motu,
256 bool enable)
257 {
258 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
259 return snd_motu_protocol_v2_switch_fetching_mode(motu, enable);
260 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
261 return snd_motu_protocol_v3_switch_fetching_mode(motu, enable);
262 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
263 return snd_motu_protocol_v1_switch_fetching_mode(motu, enable);
264 else
265 return -ENXIO;
266 }
267
snd_motu_protocol_cache_packet_formats(struct snd_motu * motu)268 static inline int snd_motu_protocol_cache_packet_formats(struct snd_motu *motu)
269 {
270 if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V2)
271 return snd_motu_protocol_v2_cache_packet_formats(motu);
272 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V3)
273 return snd_motu_protocol_v3_cache_packet_formats(motu);
274 else if (motu->spec->protocol_version == SND_MOTU_PROTOCOL_V1)
275 return snd_motu_protocol_v1_cache_packet_formats(motu);
276 else
277 return -ENXIO;
278 }
279
280 int snd_motu_register_dsp_message_parser_new(struct snd_motu *motu);
281 int snd_motu_register_dsp_message_parser_init(struct snd_motu *motu);
282 void snd_motu_register_dsp_message_parser_parse(const struct amdtp_stream *s,
283 const struct pkt_desc *descs, unsigned int count);
284 void snd_motu_register_dsp_message_parser_copy_meter(struct snd_motu *motu,
285 struct snd_firewire_motu_register_dsp_meter *meter);
286 void snd_motu_register_dsp_message_parser_copy_parameter(struct snd_motu *motu,
287 struct snd_firewire_motu_register_dsp_parameter *params);
288 unsigned int snd_motu_register_dsp_message_parser_count_event(struct snd_motu *motu);
289 bool snd_motu_register_dsp_message_parser_copy_event(struct snd_motu *motu, u32 *event);
290
291 int snd_motu_command_dsp_message_parser_new(struct snd_motu *motu);
292 int snd_motu_command_dsp_message_parser_init(struct snd_motu *motu, enum cip_sfc sfc);
293 void snd_motu_command_dsp_message_parser_parse(const struct amdtp_stream *s,
294 const struct pkt_desc *descs, unsigned int count);
295 void snd_motu_command_dsp_message_parser_copy_meter(struct snd_motu *motu,
296 struct snd_firewire_motu_command_dsp_meter *meter);
297
298 #endif
299