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Takashi Sakamoto315fd412014-04-25 22:45:02 +09001/*
2 * fireworks_stream.c - a part of driver for Fireworks based devices
3 *
4 * Copyright (c) 2013-2014 Takashi Sakamoto
5 *
6 * Licensed under the terms of the GNU General Public License, version 2.
7 */
8#include "./fireworks.h"
9
10#define CALLBACK_TIMEOUT 100
11
Takashi Sakamoto315fd412014-04-25 22:45:02 +090012static int
13init_stream(struct snd_efw *efw, struct amdtp_stream *stream)
14{
15 struct cmp_connection *conn;
16 enum cmp_direction c_dir;
17 enum amdtp_stream_direction s_dir;
18 int err;
19
20 if (stream == &efw->tx_stream) {
21 conn = &efw->out_conn;
22 c_dir = CMP_OUTPUT;
23 s_dir = AMDTP_IN_STREAM;
24 } else {
25 conn = &efw->in_conn;
26 c_dir = CMP_INPUT;
27 s_dir = AMDTP_OUT_STREAM;
28 }
29
30 err = cmp_connection_init(conn, efw->unit, c_dir, 0);
31 if (err < 0)
32 goto end;
33
34 err = amdtp_stream_init(stream, efw->unit, s_dir, CIP_BLOCKING);
35 if (err < 0) {
36 amdtp_stream_destroy(stream);
37 cmp_connection_destroy(conn);
38 }
39end:
40 return err;
41}
42
43static void
44stop_stream(struct snd_efw *efw, struct amdtp_stream *stream)
45{
46 amdtp_stream_pcm_abort(stream);
47 amdtp_stream_stop(stream);
48
49 if (stream == &efw->tx_stream)
50 cmp_connection_break(&efw->out_conn);
51 else
52 cmp_connection_break(&efw->in_conn);
53}
54
55static int
56start_stream(struct snd_efw *efw, struct amdtp_stream *stream,
57 unsigned int sampling_rate)
58{
59 struct cmp_connection *conn;
60 unsigned int mode, pcm_channels, midi_ports;
61 int err;
62
63 err = snd_efw_get_multiplier_mode(sampling_rate, &mode);
64 if (err < 0)
65 goto end;
66 if (stream == &efw->tx_stream) {
67 conn = &efw->out_conn;
68 pcm_channels = efw->pcm_capture_channels[mode];
69 midi_ports = efw->midi_out_ports;
70 } else {
71 conn = &efw->in_conn;
72 pcm_channels = efw->pcm_playback_channels[mode];
73 midi_ports = efw->midi_in_ports;
74 }
75
76 amdtp_stream_set_parameters(stream, sampling_rate,
77 pcm_channels, midi_ports);
78
79 /* establish connection via CMP */
80 err = cmp_connection_establish(conn,
81 amdtp_stream_get_max_payload(stream));
82 if (err < 0)
83 goto end;
84
85 /* start amdtp stream */
86 err = amdtp_stream_start(stream,
87 conn->resources.channel,
88 conn->speed);
89 if (err < 0) {
90 stop_stream(efw, stream);
91 goto end;
92 }
93
94 /* wait first callback */
95 if (!amdtp_stream_wait_callback(stream, CALLBACK_TIMEOUT)) {
96 stop_stream(efw, stream);
97 err = -ETIMEDOUT;
98 }
99end:
100 return err;
101}
102
Takashi Sakamotod23c2cc2015-02-21 23:54:59 +0900103/*
104 * This function should be called before starting the stream or after stopping
105 * the streams.
106 */
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900107static void
108destroy_stream(struct snd_efw *efw, struct amdtp_stream *stream)
109{
Takashi Sakamotod23c2cc2015-02-21 23:54:59 +0900110 struct cmp_connection *conn;
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900111
112 if (stream == &efw->tx_stream)
Takashi Sakamotod23c2cc2015-02-21 23:54:59 +0900113 conn = &efw->out_conn;
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900114 else
Takashi Sakamotod23c2cc2015-02-21 23:54:59 +0900115 conn = &efw->in_conn;
116
117 amdtp_stream_destroy(stream);
118 cmp_connection_destroy(&efw->out_conn);
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900119}
120
121static int
122get_sync_mode(struct snd_efw *efw, enum cip_flags *sync_mode)
123{
124 enum snd_efw_clock_source clock_source;
125 int err;
126
127 err = snd_efw_command_get_clock_source(efw, &clock_source);
128 if (err < 0)
129 return err;
130
131 if (clock_source == SND_EFW_CLOCK_SOURCE_SYTMATCH)
132 return -ENOSYS;
133
134 *sync_mode = CIP_SYNC_TO_DEVICE;
135 return 0;
136}
137
138static int
139check_connection_used_by_others(struct snd_efw *efw, struct amdtp_stream *s)
140{
141 struct cmp_connection *conn;
142 bool used;
143 int err;
144
145 if (s == &efw->tx_stream)
146 conn = &efw->out_conn;
147 else
148 conn = &efw->in_conn;
149
150 err = cmp_connection_check_used(conn, &used);
151 if ((err >= 0) && used && !amdtp_stream_running(s)) {
152 dev_err(&efw->unit->device,
153 "Connection established by others: %cPCR[%d]\n",
154 (conn->direction == CMP_OUTPUT) ? 'o' : 'i',
155 conn->pcr_index);
156 err = -EBUSY;
157 }
158
159 return err;
160}
161
162int snd_efw_stream_init_duplex(struct snd_efw *efw)
163{
164 int err;
165
166 err = init_stream(efw, &efw->tx_stream);
167 if (err < 0)
168 goto end;
Takashi Sakamoto7ab56642014-04-25 22:45:03 +0900169 /* Fireworks transmits NODATA packets with TAG0. */
170 efw->tx_stream.flags |= CIP_EMPTY_WITH_TAG0;
Takashi Sakamotoc8bdf492014-04-25 22:45:04 +0900171 /* Fireworks has its own meaning for dbc. */
172 efw->tx_stream.flags |= CIP_DBC_IS_END_EVENT;
Takashi Sakamotob84b1a22014-04-25 22:45:07 +0900173 /* Fireworks reset dbc at bus reset. */
174 efw->tx_stream.flags |= CIP_SKIP_DBC_ZERO_CHECK;
Takashi Sakamoto69702232014-04-25 22:45:05 +0900175 /* AudioFire9 always reports wrong dbs. */
176 if (efw->is_af9)
177 efw->tx_stream.flags |= CIP_WRONG_DBS;
Takashi Sakamotod9cd0062014-04-25 22:45:06 +0900178 /* Firmware version 5.5 reports fixed interval for dbc. */
179 if (efw->firmware_version == 0x5050000)
180 efw->tx_stream.tx_dbc_interval = 8;
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900181
182 err = init_stream(efw, &efw->rx_stream);
183 if (err < 0) {
184 destroy_stream(efw, &efw->tx_stream);
185 goto end;
186 }
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900187
188 /* set IEC61883 compliant mode (actually not fully compliant...) */
189 err = snd_efw_command_set_tx_mode(efw, SND_EFW_TRANSPORT_MODE_IEC61883);
190 if (err < 0) {
191 destroy_stream(efw, &efw->tx_stream);
192 destroy_stream(efw, &efw->rx_stream);
193 }
194end:
195 return err;
196}
197
Takashi Sakamoto4a286d52014-05-28 00:14:40 +0900198int snd_efw_stream_start_duplex(struct snd_efw *efw, unsigned int rate)
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900199{
200 struct amdtp_stream *master, *slave;
201 atomic_t *slave_substreams;
202 enum cip_flags sync_mode;
203 unsigned int curr_rate;
204 int err = 0;
205
206 mutex_lock(&efw->mutex);
207
208 /* Need no substreams */
209 if ((atomic_read(&efw->playback_substreams) == 0) &&
210 (atomic_read(&efw->capture_substreams) == 0))
211 goto end;
212
213 err = get_sync_mode(efw, &sync_mode);
214 if (err < 0)
215 goto end;
216 if (sync_mode == CIP_SYNC_TO_DEVICE) {
217 master = &efw->tx_stream;
218 slave = &efw->rx_stream;
219 slave_substreams = &efw->playback_substreams;
220 } else {
221 master = &efw->rx_stream;
222 slave = &efw->tx_stream;
223 slave_substreams = &efw->capture_substreams;
224 }
225
226 /*
227 * Considering JACK/FFADO streaming:
228 * TODO: This can be removed hwdep functionality becomes popular.
229 */
230 err = check_connection_used_by_others(efw, master);
231 if (err < 0)
232 goto end;
233
234 /* packet queueing error */
235 if (amdtp_streaming_error(slave))
236 stop_stream(efw, slave);
237 if (amdtp_streaming_error(master))
238 stop_stream(efw, master);
239
240 /* stop streams if rate is different */
241 err = snd_efw_command_get_sampling_rate(efw, &curr_rate);
242 if (err < 0)
243 goto end;
244 if (rate == 0)
245 rate = curr_rate;
246 if (rate != curr_rate) {
247 stop_stream(efw, slave);
248 stop_stream(efw, master);
249 }
250
251 /* master should be always running */
252 if (!amdtp_stream_running(master)) {
253 amdtp_stream_set_sync(sync_mode, master, slave);
254 efw->master = master;
255
256 err = snd_efw_command_set_sampling_rate(efw, rate);
257 if (err < 0)
258 goto end;
259
260 err = start_stream(efw, master, rate);
261 if (err < 0) {
262 dev_err(&efw->unit->device,
263 "fail to start AMDTP master stream:%d\n", err);
264 goto end;
265 }
266 }
267
268 /* start slave if needed */
269 if (atomic_read(slave_substreams) > 0 && !amdtp_stream_running(slave)) {
270 err = start_stream(efw, slave, rate);
271 if (err < 0) {
272 dev_err(&efw->unit->device,
273 "fail to start AMDTP slave stream:%d\n", err);
274 stop_stream(efw, master);
275 }
276 }
277end:
278 mutex_unlock(&efw->mutex);
279 return err;
280}
281
282void snd_efw_stream_stop_duplex(struct snd_efw *efw)
283{
284 struct amdtp_stream *master, *slave;
285 atomic_t *master_substreams, *slave_substreams;
286
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900287 if (efw->master == &efw->rx_stream) {
288 slave = &efw->tx_stream;
289 master = &efw->rx_stream;
290 slave_substreams = &efw->capture_substreams;
291 master_substreams = &efw->playback_substreams;
292 } else {
293 slave = &efw->rx_stream;
294 master = &efw->tx_stream;
295 slave_substreams = &efw->playback_substreams;
296 master_substreams = &efw->capture_substreams;
297 }
298
Takashi Sakamotoc6e5e742014-06-04 15:25:32 +0900299 mutex_lock(&efw->mutex);
300
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900301 if (atomic_read(slave_substreams) == 0) {
302 stop_stream(efw, slave);
303
304 if (atomic_read(master_substreams) == 0)
305 stop_stream(efw, master);
306 }
307
308 mutex_unlock(&efw->mutex);
309}
310
311void snd_efw_stream_update_duplex(struct snd_efw *efw)
312{
313 if ((cmp_connection_update(&efw->out_conn) < 0) ||
314 (cmp_connection_update(&efw->in_conn) < 0)) {
315 mutex_lock(&efw->mutex);
316 stop_stream(efw, &efw->rx_stream);
317 stop_stream(efw, &efw->tx_stream);
318 mutex_unlock(&efw->mutex);
319 } else {
320 amdtp_stream_update(&efw->rx_stream);
321 amdtp_stream_update(&efw->tx_stream);
322 }
323}
324
325void snd_efw_stream_destroy_duplex(struct snd_efw *efw)
326{
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900327 destroy_stream(efw, &efw->rx_stream);
328 destroy_stream(efw, &efw->tx_stream);
Takashi Sakamoto315fd412014-04-25 22:45:02 +0900329}
Takashi Sakamoto594ddce2014-04-25 22:45:12 +0900330
331void snd_efw_stream_lock_changed(struct snd_efw *efw)
332{
333 efw->dev_lock_changed = true;
334 wake_up(&efw->hwdep_wait);
335}
336
337int snd_efw_stream_lock_try(struct snd_efw *efw)
338{
339 int err;
340
341 spin_lock_irq(&efw->lock);
342
343 /* user land lock this */
344 if (efw->dev_lock_count < 0) {
345 err = -EBUSY;
346 goto end;
347 }
348
349 /* this is the first time */
350 if (efw->dev_lock_count++ == 0)
351 snd_efw_stream_lock_changed(efw);
352 err = 0;
353end:
354 spin_unlock_irq(&efw->lock);
355 return err;
356}
357
358void snd_efw_stream_lock_release(struct snd_efw *efw)
359{
360 spin_lock_irq(&efw->lock);
361
362 if (WARN_ON(efw->dev_lock_count <= 0))
363 goto end;
364 if (--efw->dev_lock_count == 0)
365 snd_efw_stream_lock_changed(efw);
366end:
367 spin_unlock_irq(&efw->lock);
368}