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Commit | Line | Data |
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705ececd | 1 | /* |
c078a4aa | 2 | * Line 6 Linux USB driver |
705ececd | 3 | * |
1027f476 | 4 | * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at) |
705ececd MG |
5 | * |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License as | |
8 | * published by the Free Software Foundation, version 2. | |
9 | * | |
10 | */ | |
11 | ||
5a0e3ad6 | 12 | #include <linux/slab.h> |
ccddbe4a | 13 | #include <linux/export.h> |
705ececd MG |
14 | #include <sound/core.h> |
15 | #include <sound/control.h> | |
16 | #include <sound/pcm.h> | |
17 | #include <sound/pcm_params.h> | |
18 | ||
705ececd | 19 | #include "capture.h" |
1027f476 | 20 | #include "driver.h" |
705ececd | 21 | #include "playback.h" |
705ececd | 22 | |
075587b7 TI |
23 | /* impulse response volume controls */ |
24 | static int snd_line6_impulse_volume_info(struct snd_kcontrol *kcontrol, | |
25 | struct snd_ctl_elem_info *uinfo) | |
1027f476 | 26 | { |
075587b7 TI |
27 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
28 | uinfo->count = 1; | |
29 | uinfo->value.integer.min = 0; | |
30 | uinfo->value.integer.max = 255; | |
31 | return 0; | |
1027f476 MG |
32 | } |
33 | ||
075587b7 TI |
34 | static int snd_line6_impulse_volume_get(struct snd_kcontrol *kcontrol, |
35 | struct snd_ctl_elem_value *ucontrol) | |
1027f476 | 36 | { |
075587b7 TI |
37 | struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); |
38 | ||
39 | ucontrol->value.integer.value[0] = line6pcm->impulse_volume; | |
40 | return 0; | |
1027f476 MG |
41 | } |
42 | ||
075587b7 TI |
43 | static int snd_line6_impulse_volume_put(struct snd_kcontrol *kcontrol, |
44 | struct snd_ctl_elem_value *ucontrol) | |
1027f476 | 45 | { |
075587b7 TI |
46 | struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); |
47 | int value = ucontrol->value.integer.value[0]; | |
247d95ee | 48 | int err; |
cdf5e551 | 49 | |
075587b7 TI |
50 | if (line6pcm->impulse_volume == value) |
51 | return 0; | |
cdf5e551 | 52 | |
1027f476 | 53 | line6pcm->impulse_volume = value; |
247d95ee | 54 | if (value > 0) { |
f56742cc | 55 | err = line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE, true); |
247d95ee TI |
56 | if (err < 0) { |
57 | line6pcm->impulse_volume = 0; | |
247d95ee TI |
58 | return err; |
59 | } | |
60 | } else { | |
63e20df1 | 61 | line6_pcm_release(line6pcm, LINE6_STREAM_IMPULSE); |
247d95ee | 62 | } |
075587b7 TI |
63 | return 1; |
64 | } | |
1027f476 | 65 | |
075587b7 TI |
66 | /* impulse response period controls */ |
67 | static int snd_line6_impulse_period_info(struct snd_kcontrol *kcontrol, | |
68 | struct snd_ctl_elem_info *uinfo) | |
69 | { | |
70 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
71 | uinfo->count = 1; | |
72 | uinfo->value.integer.min = 0; | |
73 | uinfo->value.integer.max = 2000; | |
74 | return 0; | |
1027f476 MG |
75 | } |
76 | ||
075587b7 TI |
77 | static int snd_line6_impulse_period_get(struct snd_kcontrol *kcontrol, |
78 | struct snd_ctl_elem_value *ucontrol) | |
1027f476 | 79 | { |
075587b7 TI |
80 | struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); |
81 | ||
82 | ucontrol->value.integer.value[0] = line6pcm->impulse_period; | |
83 | return 0; | |
1027f476 MG |
84 | } |
85 | ||
075587b7 TI |
86 | static int snd_line6_impulse_period_put(struct snd_kcontrol *kcontrol, |
87 | struct snd_ctl_elem_value *ucontrol) | |
1027f476 | 88 | { |
075587b7 TI |
89 | struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); |
90 | int value = ucontrol->value.integer.value[0]; | |
a3762902 | 91 | |
075587b7 TI |
92 | if (line6pcm->impulse_period == value) |
93 | return 0; | |
a3762902 | 94 | |
075587b7 TI |
95 | line6pcm->impulse_period = value; |
96 | return 1; | |
1027f476 | 97 | } |
1027f476 | 98 | |
d8131e67 TI |
99 | /* |
100 | Unlink all currently active URBs. | |
101 | */ | |
102 | static void line6_unlink_audio_urbs(struct snd_line6_pcm *line6pcm, | |
103 | struct line6_pcm_stream *pcms) | |
104 | { | |
105 | int i; | |
106 | ||
b2233d97 | 107 | for (i = 0; i < line6pcm->line6->iso_buffers; i++) { |
d8131e67 TI |
108 | if (test_bit(i, &pcms->active_urbs)) { |
109 | if (!test_and_set_bit(i, &pcms->unlink_urbs)) | |
110 | usb_unlink_urb(pcms->urbs[i]); | |
111 | } | |
112 | } | |
113 | } | |
114 | ||
115 | /* | |
116 | Wait until unlinking of all currently active URBs has been finished. | |
117 | */ | |
118 | static void line6_wait_clear_audio_urbs(struct snd_line6_pcm *line6pcm, | |
119 | struct line6_pcm_stream *pcms) | |
120 | { | |
121 | int timeout = HZ; | |
122 | int i; | |
123 | int alive; | |
124 | ||
125 | do { | |
126 | alive = 0; | |
b2233d97 | 127 | for (i = 0; i < line6pcm->line6->iso_buffers; i++) { |
d8131e67 TI |
128 | if (test_bit(i, &pcms->active_urbs)) |
129 | alive++; | |
130 | } | |
131 | if (!alive) | |
132 | break; | |
133 | set_current_state(TASK_UNINTERRUPTIBLE); | |
134 | schedule_timeout(1); | |
135 | } while (--timeout > 0); | |
136 | if (alive) | |
ccaac9ed TI |
137 | dev_err(line6pcm->line6->ifcdev, |
138 | "timeout: still %d active urbs..\n", alive); | |
d8131e67 TI |
139 | } |
140 | ||
63e20df1 TI |
141 | static inline struct line6_pcm_stream * |
142 | get_stream(struct snd_line6_pcm *line6pcm, int direction) | |
e90576c5 | 143 | { |
63e20df1 TI |
144 | return (direction == SNDRV_PCM_STREAM_PLAYBACK) ? |
145 | &line6pcm->out : &line6pcm->in; | |
e90576c5 TI |
146 | } |
147 | ||
63e20df1 | 148 | /* allocate a buffer if not opened yet; |
7a0f55ae | 149 | * call this in line6pcm.state_mutex |
63e20df1 TI |
150 | */ |
151 | static int line6_buffer_acquire(struct snd_line6_pcm *line6pcm, | |
7a0f55ae | 152 | struct line6_pcm_stream *pstr, int direction, int type) |
e90576c5 | 153 | { |
7a0f55ae AK |
154 | const int pkt_size = |
155 | (direction == SNDRV_PCM_STREAM_PLAYBACK) ? | |
156 | line6pcm->max_packet_size_out : | |
157 | line6pcm->max_packet_size_in; | |
158 | ||
63e20df1 TI |
159 | /* Invoked multiple times in a row so allocate once only */ |
160 | if (!test_and_set_bit(type, &pstr->opened) && !pstr->buffer) { | |
b2233d97 | 161 | pstr->buffer = kmalloc(line6pcm->line6->iso_buffers * |
7a0f55ae | 162 | LINE6_ISO_PACKETS * pkt_size, GFP_KERNEL); |
63e20df1 TI |
163 | if (!pstr->buffer) |
164 | return -ENOMEM; | |
165 | } | |
166 | return 0; | |
e90576c5 TI |
167 | } |
168 | ||
63e20df1 | 169 | /* free a buffer if all streams are closed; |
7a0f55ae | 170 | * call this in line6pcm.state_mutex |
63e20df1 TI |
171 | */ |
172 | static void line6_buffer_release(struct snd_line6_pcm *line6pcm, | |
173 | struct line6_pcm_stream *pstr, int type) | |
6b02a17e | 174 | { |
63e20df1 TI |
175 | clear_bit(type, &pstr->opened); |
176 | if (!pstr->opened) { | |
177 | line6_wait_clear_audio_urbs(line6pcm, pstr); | |
178 | kfree(pstr->buffer); | |
179 | pstr->buffer = NULL; | |
180 | } | |
6b02a17e MG |
181 | } |
182 | ||
63e20df1 TI |
183 | /* start a PCM stream */ |
184 | static int line6_stream_start(struct snd_line6_pcm *line6pcm, int direction, | |
185 | int type) | |
1027f476 | 186 | { |
63e20df1 TI |
187 | unsigned long flags; |
188 | struct line6_pcm_stream *pstr = get_stream(line6pcm, direction); | |
189 | int ret = 0; | |
190 | ||
191 | spin_lock_irqsave(&pstr->lock, flags); | |
4d0e6775 TI |
192 | if (!test_and_set_bit(type, &pstr->running) && |
193 | !(pstr->active_urbs || pstr->unlink_urbs)) { | |
63e20df1 TI |
194 | pstr->count = 0; |
195 | /* Submit all currently available URBs */ | |
196 | if (direction == SNDRV_PCM_STREAM_PLAYBACK) | |
197 | ret = line6_submit_audio_out_all_urbs(line6pcm); | |
198 | else | |
199 | ret = line6_submit_audio_in_all_urbs(line6pcm); | |
0ca54888 | 200 | } |
7a0f55ae | 201 | |
63e20df1 TI |
202 | if (ret < 0) |
203 | clear_bit(type, &pstr->running); | |
204 | spin_unlock_irqrestore(&pstr->lock, flags); | |
205 | return ret; | |
206 | } | |
0ca54888 | 207 | |
63e20df1 TI |
208 | /* stop a PCM stream; this doesn't sync with the unlinked URBs */ |
209 | static void line6_stream_stop(struct snd_line6_pcm *line6pcm, int direction, | |
210 | int type) | |
211 | { | |
212 | unsigned long flags; | |
213 | struct line6_pcm_stream *pstr = get_stream(line6pcm, direction); | |
214 | ||
215 | spin_lock_irqsave(&pstr->lock, flags); | |
216 | clear_bit(type, &pstr->running); | |
217 | if (!pstr->running) { | |
adc8a43a | 218 | spin_unlock_irqrestore(&pstr->lock, flags); |
63e20df1 | 219 | line6_unlink_audio_urbs(line6pcm, pstr); |
adc8a43a | 220 | spin_lock_irqsave(&pstr->lock, flags); |
63e20df1 TI |
221 | if (direction == SNDRV_PCM_STREAM_CAPTURE) { |
222 | line6pcm->prev_fbuf = NULL; | |
223 | line6pcm->prev_fsize = 0; | |
6b02a17e | 224 | } |
63e20df1 TI |
225 | } |
226 | spin_unlock_irqrestore(&pstr->lock, flags); | |
227 | } | |
6b02a17e | 228 | |
63e20df1 TI |
229 | /* common PCM trigger callback */ |
230 | int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd) | |
231 | { | |
232 | struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); | |
233 | struct snd_pcm_substream *s; | |
234 | int err; | |
e1a164d7 | 235 | |
63e20df1 | 236 | clear_bit(LINE6_FLAG_PREPARED, &line6pcm->flags); |
0ca54888 | 237 | |
63e20df1 TI |
238 | snd_pcm_group_for_each_entry(s, substream) { |
239 | if (s->pcm->card != substream->pcm->card) | |
240 | continue; | |
e1a164d7 | 241 | |
63e20df1 TI |
242 | switch (cmd) { |
243 | case SNDRV_PCM_TRIGGER_START: | |
244 | case SNDRV_PCM_TRIGGER_RESUME: | |
f56742cc AK |
245 | if (s->stream == SNDRV_PCM_STREAM_CAPTURE && |
246 | (line6pcm->line6->properties->capabilities & | |
247 | LINE6_CAP_IN_NEEDS_OUT)) { | |
248 | err = line6_stream_start(line6pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
249 | LINE6_STREAM_CAPTURE_HELPER); | |
250 | if (err < 0) | |
251 | return err; | |
252 | } | |
63e20df1 TI |
253 | err = line6_stream_start(line6pcm, s->stream, |
254 | LINE6_STREAM_PCM); | |
255 | if (err < 0) | |
256 | return err; | |
257 | break; | |
6b02a17e | 258 | |
63e20df1 TI |
259 | case SNDRV_PCM_TRIGGER_STOP: |
260 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
f56742cc AK |
261 | if (s->stream == SNDRV_PCM_STREAM_CAPTURE && |
262 | (line6pcm->line6->properties->capabilities & | |
263 | LINE6_CAP_IN_NEEDS_OUT)) { | |
264 | line6_stream_stop(line6pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
265 | LINE6_STREAM_CAPTURE_HELPER); | |
266 | } | |
63e20df1 TI |
267 | line6_stream_stop(line6pcm, s->stream, |
268 | LINE6_STREAM_PCM); | |
269 | break; | |
6b02a17e | 270 | |
63e20df1 TI |
271 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
272 | if (s->stream != SNDRV_PCM_STREAM_PLAYBACK) | |
273 | return -EINVAL; | |
274 | set_bit(LINE6_FLAG_PAUSE_PLAYBACK, &line6pcm->flags); | |
275 | break; | |
e1a164d7 | 276 | |
63e20df1 TI |
277 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
278 | if (s->stream != SNDRV_PCM_STREAM_PLAYBACK) | |
279 | return -EINVAL; | |
280 | clear_bit(LINE6_FLAG_PAUSE_PLAYBACK, &line6pcm->flags); | |
281 | break; | |
0ca54888 | 282 | |
63e20df1 TI |
283 | default: |
284 | return -EINVAL; | |
285 | } | |
1027f476 | 286 | } |
e1a164d7 | 287 | |
1027f476 MG |
288 | return 0; |
289 | } | |
290 | ||
2954f914 TI |
291 | /* common PCM pointer callback */ |
292 | snd_pcm_uframes_t snd_line6_pointer(struct snd_pcm_substream *substream) | |
293 | { | |
294 | struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); | |
295 | struct line6_pcm_stream *pstr = get_stream(line6pcm, substream->stream); | |
296 | ||
297 | return pstr->pos_done; | |
298 | } | |
299 | ||
f56742cc | 300 | /* Acquire and optionally start duplex streams: |
63e20df1 TI |
301 | * type is either LINE6_STREAM_IMPULSE or LINE6_STREAM_MONITOR |
302 | */ | |
f56742cc | 303 | int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type, bool start) |
1027f476 | 304 | { |
63e20df1 TI |
305 | struct line6_pcm_stream *pstr; |
306 | int ret = 0, dir; | |
307 | ||
f56742cc | 308 | /* TODO: We should assert SNDRV_PCM_STREAM_PLAYBACK/CAPTURE == 0/1 */ |
63e20df1 TI |
309 | mutex_lock(&line6pcm->state_mutex); |
310 | for (dir = 0; dir < 2; dir++) { | |
311 | pstr = get_stream(line6pcm, dir); | |
7a0f55ae | 312 | ret = line6_buffer_acquire(line6pcm, pstr, dir, type); |
63e20df1 TI |
313 | if (ret < 0) |
314 | goto error; | |
315 | if (!pstr->running) | |
316 | line6_wait_clear_audio_urbs(line6pcm, pstr); | |
f2bb614b | 317 | } |
f56742cc AK |
318 | if (start) { |
319 | for (dir = 0; dir < 2; dir++) { | |
320 | ret = line6_stream_start(line6pcm, dir, type); | |
321 | if (ret < 0) | |
322 | goto error; | |
323 | } | |
1027f476 | 324 | } |
63e20df1 TI |
325 | error: |
326 | mutex_unlock(&line6pcm->state_mutex); | |
327 | if (ret < 0) | |
328 | line6_pcm_release(line6pcm, type); | |
329 | return ret; | |
330 | } | |
331 | EXPORT_SYMBOL_GPL(line6_pcm_acquire); | |
1027f476 | 332 | |
63e20df1 TI |
333 | /* Stop and release duplex streams */ |
334 | void line6_pcm_release(struct snd_line6_pcm *line6pcm, int type) | |
335 | { | |
336 | struct line6_pcm_stream *pstr; | |
337 | int dir; | |
338 | ||
339 | mutex_lock(&line6pcm->state_mutex); | |
340 | for (dir = 0; dir < 2; dir++) | |
341 | line6_stream_stop(line6pcm, dir, type); | |
342 | for (dir = 0; dir < 2; dir++) { | |
343 | pstr = get_stream(line6pcm, dir); | |
344 | line6_buffer_release(line6pcm, pstr, type); | |
1027f476 | 345 | } |
63e20df1 | 346 | mutex_unlock(&line6pcm->state_mutex); |
1027f476 | 347 | } |
ccddbe4a | 348 | EXPORT_SYMBOL_GPL(line6_pcm_release); |
1027f476 | 349 | |
63e20df1 TI |
350 | /* common PCM hw_params callback */ |
351 | int snd_line6_hw_params(struct snd_pcm_substream *substream, | |
352 | struct snd_pcm_hw_params *hw_params) | |
705ececd | 353 | { |
63e20df1 | 354 | int ret; |
705ececd | 355 | struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); |
63e20df1 TI |
356 | struct line6_pcm_stream *pstr = get_stream(line6pcm, substream->stream); |
357 | ||
358 | mutex_lock(&line6pcm->state_mutex); | |
7a0f55ae AK |
359 | ret = line6_buffer_acquire(line6pcm, pstr, substream->stream, |
360 | LINE6_STREAM_PCM); | |
63e20df1 TI |
361 | if (ret < 0) |
362 | goto error; | |
363 | ||
364 | ret = snd_pcm_lib_malloc_pages(substream, | |
365 | params_buffer_bytes(hw_params)); | |
366 | if (ret < 0) { | |
367 | line6_buffer_release(line6pcm, pstr, LINE6_STREAM_PCM); | |
368 | goto error; | |
369 | } | |
705ececd | 370 | |
63e20df1 TI |
371 | pstr->period = params_period_bytes(hw_params); |
372 | error: | |
373 | mutex_unlock(&line6pcm->state_mutex); | |
374 | return ret; | |
375 | } | |
705ececd | 376 | |
63e20df1 TI |
377 | /* common PCM hw_free callback */ |
378 | int snd_line6_hw_free(struct snd_pcm_substream *substream) | |
379 | { | |
380 | struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); | |
381 | struct line6_pcm_stream *pstr = get_stream(line6pcm, substream->stream); | |
705ececd | 382 | |
63e20df1 TI |
383 | mutex_lock(&line6pcm->state_mutex); |
384 | line6_buffer_release(line6pcm, pstr, LINE6_STREAM_PCM); | |
385 | mutex_unlock(&line6pcm->state_mutex); | |
386 | return snd_pcm_lib_free_pages(substream); | |
705ececd MG |
387 | } |
388 | ||
63e20df1 | 389 | |
705ececd | 390 | /* control info callback */ |
1027f476 MG |
391 | static int snd_line6_control_playback_info(struct snd_kcontrol *kcontrol, |
392 | struct snd_ctl_elem_info *uinfo) | |
68dc3dde | 393 | { |
705ececd MG |
394 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
395 | uinfo->count = 2; | |
396 | uinfo->value.integer.min = 0; | |
397 | uinfo->value.integer.max = 256; | |
398 | return 0; | |
399 | } | |
400 | ||
401 | /* control get callback */ | |
1027f476 MG |
402 | static int snd_line6_control_playback_get(struct snd_kcontrol *kcontrol, |
403 | struct snd_ctl_elem_value *ucontrol) | |
68dc3dde | 404 | { |
705ececd MG |
405 | int i; |
406 | struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); | |
407 | ||
9fb754b7 | 408 | for (i = 0; i < 2; i++) |
1027f476 | 409 | ucontrol->value.integer.value[i] = line6pcm->volume_playback[i]; |
705ececd MG |
410 | |
411 | return 0; | |
412 | } | |
413 | ||
414 | /* control put callback */ | |
1027f476 MG |
415 | static int snd_line6_control_playback_put(struct snd_kcontrol *kcontrol, |
416 | struct snd_ctl_elem_value *ucontrol) | |
68dc3dde | 417 | { |
705ececd MG |
418 | int i, changed = 0; |
419 | struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); | |
420 | ||
9fb754b7 | 421 | for (i = 0; i < 2; i++) |
e1a164d7 MG |
422 | if (line6pcm->volume_playback[i] != |
423 | ucontrol->value.integer.value[i]) { | |
424 | line6pcm->volume_playback[i] = | |
425 | ucontrol->value.integer.value[i]; | |
705ececd MG |
426 | changed = 1; |
427 | } | |
428 | ||
429 | return changed; | |
430 | } | |
431 | ||
432 | /* control definition */ | |
075587b7 TI |
433 | static struct snd_kcontrol_new line6_controls[] = { |
434 | { | |
435 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
436 | .name = "PCM Playback Volume", | |
437 | .info = snd_line6_control_playback_info, | |
438 | .get = snd_line6_control_playback_get, | |
439 | .put = snd_line6_control_playback_put | |
440 | }, | |
441 | { | |
442 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
443 | .name = "Impulse Response Volume", | |
444 | .info = snd_line6_impulse_volume_info, | |
445 | .get = snd_line6_impulse_volume_get, | |
446 | .put = snd_line6_impulse_volume_put | |
447 | }, | |
448 | { | |
449 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
450 | .name = "Impulse Response Period", | |
451 | .info = snd_line6_impulse_period_info, | |
452 | .get = snd_line6_impulse_period_get, | |
453 | .put = snd_line6_impulse_period_put | |
454 | }, | |
705ececd MG |
455 | }; |
456 | ||
457 | /* | |
458 | Cleanup the PCM device. | |
459 | */ | |
b2233d97 | 460 | static void cleanup_urbs(struct line6_pcm_stream *pcms, int iso_buffers) |
705ececd MG |
461 | { |
462 | int i; | |
705ececd | 463 | |
b2233d97 AK |
464 | /* Most likely impossible in current code... */ |
465 | if (pcms->urbs == NULL) | |
466 | return; | |
467 | ||
468 | for (i = 0; i < iso_buffers; i++) { | |
d8131e67 TI |
469 | if (pcms->urbs[i]) { |
470 | usb_kill_urb(pcms->urbs[i]); | |
471 | usb_free_urb(pcms->urbs[i]); | |
705ececd MG |
472 | } |
473 | } | |
b2233d97 AK |
474 | kfree(pcms->urbs); |
475 | pcms->urbs = NULL; | |
d8131e67 TI |
476 | } |
477 | ||
478 | static void line6_cleanup_pcm(struct snd_pcm *pcm) | |
479 | { | |
480 | struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm); | |
481 | ||
b2233d97 AK |
482 | cleanup_urbs(&line6pcm->out, line6pcm->line6->iso_buffers); |
483 | cleanup_urbs(&line6pcm->in, line6pcm->line6->iso_buffers); | |
b45a7c56 | 484 | kfree(line6pcm); |
705ececd MG |
485 | } |
486 | ||
487 | /* create a PCM device */ | |
b45a7c56 | 488 | static int snd_line6_new_pcm(struct usb_line6 *line6, struct snd_pcm **pcm_ret) |
705ececd MG |
489 | { |
490 | struct snd_pcm *pcm; | |
491 | int err; | |
492 | ||
b45a7c56 TI |
493 | err = snd_pcm_new(line6->card, (char *)line6->properties->name, |
494 | 0, 1, 1, pcm_ret); | |
68dc3dde | 495 | if (err < 0) |
705ececd | 496 | return err; |
b45a7c56 TI |
497 | pcm = *pcm_ret; |
498 | strcpy(pcm->name, line6->properties->name); | |
705ececd MG |
499 | |
500 | /* set operators */ | |
afb9091d SB |
501 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
502 | &snd_line6_playback_ops); | |
e1a164d7 | 503 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_line6_capture_ops); |
705ececd MG |
504 | |
505 | /* pre-allocation of buffers */ | |
68dc3dde | 506 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, |
e1a164d7 MG |
507 | snd_dma_continuous_data |
508 | (GFP_KERNEL), 64 * 1024, | |
509 | 128 * 1024); | |
705ececd MG |
510 | return 0; |
511 | } | |
512 | ||
1027f476 | 513 | /* |
5a475311 | 514 | Sync with PCM stream stops. |
1027f476 MG |
515 | */ |
516 | void line6_pcm_disconnect(struct snd_line6_pcm *line6pcm) | |
517 | { | |
d8131e67 TI |
518 | line6_unlink_audio_urbs(line6pcm, &line6pcm->out); |
519 | line6_unlink_audio_urbs(line6pcm, &line6pcm->in); | |
520 | line6_wait_clear_audio_urbs(line6pcm, &line6pcm->out); | |
521 | line6_wait_clear_audio_urbs(line6pcm, &line6pcm->in); | |
1027f476 MG |
522 | } |
523 | ||
705ececd MG |
524 | /* |
525 | Create and register the PCM device and mixer entries. | |
526 | Create URBs for playback and capture. | |
527 | */ | |
68dc3dde GKH |
528 | int line6_init_pcm(struct usb_line6 *line6, |
529 | struct line6_pcm_properties *properties) | |
705ececd | 530 | { |
075587b7 | 531 | int i, err; |
16d603d3 CR |
532 | unsigned ep_read = line6->properties->ep_audio_r; |
533 | unsigned ep_write = line6->properties->ep_audio_w; | |
b45a7c56 | 534 | struct snd_pcm *pcm; |
705ececd MG |
535 | struct snd_line6_pcm *line6pcm; |
536 | ||
4cb1a4ae | 537 | if (!(line6->properties->capabilities & LINE6_CAP_PCM)) |
e1a164d7 | 538 | return 0; /* skip PCM initialization and report success */ |
705ececd | 539 | |
b45a7c56 TI |
540 | err = snd_line6_new_pcm(line6, &pcm); |
541 | if (err < 0) | |
542 | return err; | |
705ececd | 543 | |
b45a7c56 TI |
544 | line6pcm = kzalloc(sizeof(*line6pcm), GFP_KERNEL); |
545 | if (!line6pcm) | |
705ececd MG |
546 | return -ENOMEM; |
547 | ||
63e20df1 | 548 | mutex_init(&line6pcm->state_mutex); |
b45a7c56 TI |
549 | line6pcm->pcm = pcm; |
550 | line6pcm->properties = properties; | |
1027f476 MG |
551 | line6pcm->volume_playback[0] = line6pcm->volume_playback[1] = 255; |
552 | line6pcm->volume_monitor = 255; | |
705ececd | 553 | line6pcm->line6 = line6; |
3b08db37 | 554 | |
7a0f55ae AK |
555 | line6pcm->max_packet_size_in = |
556 | usb_maxpacket(line6->usbdev, | |
557 | usb_rcvisocpipe(line6->usbdev, ep_read), 0); | |
558 | line6pcm->max_packet_size_out = | |
559 | usb_maxpacket(line6->usbdev, | |
560 | usb_sndisocpipe(line6->usbdev, ep_write), 1); | |
3b08db37 | 561 | |
ad0119ab TI |
562 | spin_lock_init(&line6pcm->out.lock); |
563 | spin_lock_init(&line6pcm->in.lock); | |
075587b7 | 564 | line6pcm->impulse_period = LINE6_IMPULSE_DEFAULT_PERIOD; |
705ececd | 565 | |
b45a7c56 TI |
566 | line6->line6pcm = line6pcm; |
567 | ||
568 | pcm->private_data = line6pcm; | |
569 | pcm->private_free = line6_cleanup_pcm; | |
570 | ||
1027f476 | 571 | err = line6_create_audio_out_urbs(line6pcm); |
68dc3dde | 572 | if (err < 0) |
705ececd MG |
573 | return err; |
574 | ||
1027f476 | 575 | err = line6_create_audio_in_urbs(line6pcm); |
68dc3dde | 576 | if (err < 0) |
705ececd MG |
577 | return err; |
578 | ||
579 | /* mixer: */ | |
075587b7 TI |
580 | for (i = 0; i < ARRAY_SIZE(line6_controls); i++) { |
581 | err = snd_ctl_add(line6->card, | |
582 | snd_ctl_new1(&line6_controls[i], line6pcm)); | |
583 | if (err < 0) | |
584 | return err; | |
585 | } | |
1027f476 | 586 | |
705ececd MG |
587 | return 0; |
588 | } | |
ccddbe4a | 589 | EXPORT_SYMBOL_GPL(line6_init_pcm); |
705ececd MG |
590 | |
591 | /* prepare pcm callback */ | |
592 | int snd_line6_prepare(struct snd_pcm_substream *substream) | |
593 | { | |
594 | struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); | |
63e20df1 | 595 | struct line6_pcm_stream *pstr = get_stream(line6pcm, substream->stream); |
705ececd | 596 | |
63e20df1 TI |
597 | mutex_lock(&line6pcm->state_mutex); |
598 | if (!pstr->running) | |
599 | line6_wait_clear_audio_urbs(line6pcm, pstr); | |
665f3f50 | 600 | |
63e20df1 | 601 | if (!test_and_set_bit(LINE6_FLAG_PREPARED, &line6pcm->flags)) { |
ad0119ab TI |
602 | line6pcm->out.count = 0; |
603 | line6pcm->out.pos = 0; | |
604 | line6pcm->out.pos_done = 0; | |
605 | line6pcm->out.bytes = 0; | |
606 | line6pcm->in.count = 0; | |
607 | line6pcm->in.pos_done = 0; | |
608 | line6pcm->in.bytes = 0; | |
705ececd MG |
609 | } |
610 | ||
63e20df1 | 611 | mutex_unlock(&line6pcm->state_mutex); |
705ececd MG |
612 | return 0; |
613 | } |