2 * fireworks_stream.c - a part of driver for Fireworks based devices
4 * Copyright (c) 2013-2014 Takashi Sakamoto
6 * Licensed under the terms of the GNU General Public License, version 2.
8 #include "./fireworks.h"
10 #define CALLBACK_TIMEOUT 100
13 init_stream(struct snd_efw *efw, struct amdtp_stream *stream)
15 struct cmp_connection *conn;
16 enum cmp_direction c_dir;
17 enum amdtp_stream_direction s_dir;
20 if (stream == &efw->tx_stream) {
21 conn = &efw->out_conn;
23 s_dir = AMDTP_IN_STREAM;
27 s_dir = AMDTP_OUT_STREAM;
30 err = cmp_connection_init(conn, efw->unit, c_dir, 0);
34 err = amdtp_am824_init(stream, efw->unit, s_dir, CIP_BLOCKING);
36 amdtp_stream_destroy(stream);
37 cmp_connection_destroy(conn);
44 stop_stream(struct snd_efw *efw, struct amdtp_stream *stream)
46 amdtp_stream_pcm_abort(stream);
47 amdtp_stream_stop(stream);
49 if (stream == &efw->tx_stream)
50 cmp_connection_break(&efw->out_conn);
52 cmp_connection_break(&efw->in_conn);
56 start_stream(struct snd_efw *efw, struct amdtp_stream *stream,
57 unsigned int sampling_rate)
59 struct cmp_connection *conn;
60 unsigned int mode, pcm_channels, midi_ports;
63 err = snd_efw_get_multiplier_mode(sampling_rate, &mode);
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;
72 pcm_channels = efw->pcm_playback_channels[mode];
73 midi_ports = efw->midi_in_ports;
76 err = amdtp_am824_set_parameters(stream, sampling_rate,
77 pcm_channels, midi_ports, false);
81 /* establish connection via CMP */
82 err = cmp_connection_establish(conn,
83 amdtp_stream_get_max_payload(stream));
87 /* start amdtp stream */
88 err = amdtp_stream_start(stream,
89 conn->resources.channel,
92 stop_stream(efw, stream);
96 /* wait first callback */
97 if (!amdtp_stream_wait_callback(stream, CALLBACK_TIMEOUT)) {
98 stop_stream(efw, stream);
106 * This function should be called before starting the stream or after stopping
110 destroy_stream(struct snd_efw *efw, struct amdtp_stream *stream)
112 struct cmp_connection *conn;
114 if (stream == &efw->tx_stream)
115 conn = &efw->out_conn;
117 conn = &efw->in_conn;
119 amdtp_stream_destroy(stream);
120 cmp_connection_destroy(&efw->out_conn);
124 get_sync_mode(struct snd_efw *efw, enum cip_flags *sync_mode)
126 enum snd_efw_clock_source clock_source;
129 err = snd_efw_command_get_clock_source(efw, &clock_source);
133 if (clock_source == SND_EFW_CLOCK_SOURCE_SYTMATCH)
136 *sync_mode = CIP_SYNC_TO_DEVICE;
141 check_connection_used_by_others(struct snd_efw *efw, struct amdtp_stream *s)
143 struct cmp_connection *conn;
147 if (s == &efw->tx_stream)
148 conn = &efw->out_conn;
150 conn = &efw->in_conn;
152 err = cmp_connection_check_used(conn, &used);
153 if ((err >= 0) && used && !amdtp_stream_running(s)) {
154 dev_err(&efw->unit->device,
155 "Connection established by others: %cPCR[%d]\n",
156 (conn->direction == CMP_OUTPUT) ? 'o' : 'i',
164 int snd_efw_stream_init_duplex(struct snd_efw *efw)
168 err = init_stream(efw, &efw->tx_stream);
171 /* Fireworks transmits NODATA packets with TAG0. */
172 efw->tx_stream.flags |= CIP_EMPTY_WITH_TAG0;
173 /* Fireworks has its own meaning for dbc. */
174 efw->tx_stream.flags |= CIP_DBC_IS_END_EVENT;
175 /* Fireworks reset dbc at bus reset. */
176 efw->tx_stream.flags |= CIP_SKIP_DBC_ZERO_CHECK;
178 * But Recent firmwares starts packets with non-zero dbc.
179 * Driver version 5.7.6 installs firmware version 5.7.3.
181 if (efw->is_fireworks3 &&
182 (efw->firmware_version == 0x5070000 ||
183 efw->firmware_version == 0x5070300 ||
184 efw->firmware_version == 0x5080000))
185 efw->tx_stream.tx_first_dbc = 0x02;
186 /* AudioFire9 always reports wrong dbs. */
188 efw->tx_stream.flags |= CIP_WRONG_DBS;
189 /* Firmware version 5.5 reports fixed interval for dbc. */
190 if (efw->firmware_version == 0x5050000)
191 efw->tx_stream.tx_dbc_interval = 8;
193 err = init_stream(efw, &efw->rx_stream);
195 destroy_stream(efw, &efw->tx_stream);
199 /* set IEC61883 compliant mode (actually not fully compliant...) */
200 err = snd_efw_command_set_tx_mode(efw, SND_EFW_TRANSPORT_MODE_IEC61883);
202 destroy_stream(efw, &efw->tx_stream);
203 destroy_stream(efw, &efw->rx_stream);
209 int snd_efw_stream_start_duplex(struct snd_efw *efw, unsigned int rate)
211 struct amdtp_stream *master, *slave;
212 unsigned int slave_substreams;
213 enum cip_flags sync_mode;
214 unsigned int curr_rate;
217 /* Need no substreams */
218 if (efw->playback_substreams == 0 && efw->capture_substreams == 0)
221 err = get_sync_mode(efw, &sync_mode);
224 if (sync_mode == CIP_SYNC_TO_DEVICE) {
225 master = &efw->tx_stream;
226 slave = &efw->rx_stream;
227 slave_substreams = efw->playback_substreams;
229 master = &efw->rx_stream;
230 slave = &efw->tx_stream;
231 slave_substreams = efw->capture_substreams;
235 * Considering JACK/FFADO streaming:
236 * TODO: This can be removed hwdep functionality becomes popular.
238 err = check_connection_used_by_others(efw, master);
242 /* packet queueing error */
243 if (amdtp_streaming_error(slave))
244 stop_stream(efw, slave);
245 if (amdtp_streaming_error(master))
246 stop_stream(efw, master);
248 /* stop streams if rate is different */
249 err = snd_efw_command_get_sampling_rate(efw, &curr_rate);
254 if (rate != curr_rate) {
255 stop_stream(efw, slave);
256 stop_stream(efw, master);
259 /* master should be always running */
260 if (!amdtp_stream_running(master)) {
261 amdtp_stream_set_sync(sync_mode, master, slave);
262 efw->master = master;
264 err = snd_efw_command_set_sampling_rate(efw, rate);
268 err = start_stream(efw, master, rate);
270 dev_err(&efw->unit->device,
271 "fail to start AMDTP master stream:%d\n", err);
276 /* start slave if needed */
277 if (slave_substreams > 0 && !amdtp_stream_running(slave)) {
278 err = start_stream(efw, slave, rate);
280 dev_err(&efw->unit->device,
281 "fail to start AMDTP slave stream:%d\n", err);
282 stop_stream(efw, master);
289 void snd_efw_stream_stop_duplex(struct snd_efw *efw)
291 struct amdtp_stream *master, *slave;
292 unsigned int master_substreams, slave_substreams;
294 if (efw->master == &efw->rx_stream) {
295 slave = &efw->tx_stream;
296 master = &efw->rx_stream;
297 slave_substreams = efw->capture_substreams;
298 master_substreams = efw->playback_substreams;
300 slave = &efw->rx_stream;
301 master = &efw->tx_stream;
302 slave_substreams = efw->playback_substreams;
303 master_substreams = efw->capture_substreams;
306 if (slave_substreams == 0) {
307 stop_stream(efw, slave);
309 if (master_substreams == 0)
310 stop_stream(efw, master);
314 void snd_efw_stream_update_duplex(struct snd_efw *efw)
316 if (cmp_connection_update(&efw->out_conn) < 0 ||
317 cmp_connection_update(&efw->in_conn) < 0) {
318 stop_stream(efw, &efw->rx_stream);
319 stop_stream(efw, &efw->tx_stream);
321 amdtp_stream_update(&efw->rx_stream);
322 amdtp_stream_update(&efw->tx_stream);
326 void snd_efw_stream_destroy_duplex(struct snd_efw *efw)
328 destroy_stream(efw, &efw->rx_stream);
329 destroy_stream(efw, &efw->tx_stream);
332 void snd_efw_stream_lock_changed(struct snd_efw *efw)
334 efw->dev_lock_changed = true;
335 wake_up(&efw->hwdep_wait);
338 int snd_efw_stream_lock_try(struct snd_efw *efw)
342 spin_lock_irq(&efw->lock);
344 /* user land lock this */
345 if (efw->dev_lock_count < 0) {
350 /* this is the first time */
351 if (efw->dev_lock_count++ == 0)
352 snd_efw_stream_lock_changed(efw);
355 spin_unlock_irq(&efw->lock);
359 void snd_efw_stream_lock_release(struct snd_efw *efw)
361 spin_lock_irq(&efw->lock);
363 if (WARN_ON(efw->dev_lock_count <= 0))
365 if (--efw->dev_lock_count == 0)
366 snd_efw_stream_lock_changed(efw);
368 spin_unlock_irq(&efw->lock);