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ALSA: usb-audio: add some Yamaha USB MIDI quirks
[deliverable/linux.git] / sound / usb / usbaudio.c
CommitLineData
1da177e4
LT		 1/*
2 * (Tentative) USB Audio Driver for ALSA
3 *
4 * Main and PCM part
5 *
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
7 *
8 * Many codes borrowed from audio.c by
9 * Alan Cox (alan@lxorguk.ukuu.org.uk)
10 * Thomas Sailer (sailer@ife.ee.ethz.ch)
11 *
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 *
28 * NOTES:
29 *
30 * - async unlink should be used for avoiding the sleep inside lock.
31 * 2.4.22 usb-uhci seems buggy for async unlinking and results in
32 * oops. in such a cse, pass async_unlink=0 option.
33 * - the linked URBs would be preferred but not used so far because of
34 * the instability of unlinking.
35 * - type II is not supported properly. there is no device which supports
36 * this type *correctly*. SB extigy looks as if it supports, but it's
37 * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream).
38 */
39
40
1da177e4
LT		 41#include <linux/bitops.h>
42#include <linux/init.h>
43#include <linux/list.h>
44#include <linux/slab.h>
45#include <linux/string.h>
46#include <linux/usb.h>
6207e51b 47#include <linux/vmalloc.h>
1da177e4 48#include <linux/moduleparam.h>
12aa7579 49#include <linux/mutex.h>
1da177e4
LT		 50#include <sound/core.h>
51#include <sound/info.h>
52#include <sound/pcm.h>
53#include <sound/pcm_params.h>
54#include <sound/initval.h>
55
56#include "usbaudio.h"
57
58
59MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
60MODULE_DESCRIPTION("USB Audio");
61MODULE_LICENSE("GPL");
62MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
63
64
65static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
66static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
07f51a72
PM		 67static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */
68/* Vendor/product IDs for this card */
69static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
70static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
92b9ac78 71static int nrpacks = 8; /* max. number of packets per urb */
1da177e4 72static int async_unlink = 1;
e311334e 73static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/
1da177e4
LT		 74
75module_param_array(index, int, NULL, 0444);
76MODULE_PARM_DESC(index, "Index value for the USB audio adapter.");
77module_param_array(id, charp, NULL, 0444);
78MODULE_PARM_DESC(id, "ID string for the USB audio adapter.");
79module_param_array(enable, bool, NULL, 0444);
80MODULE_PARM_DESC(enable, "Enable USB audio adapter.");
81module_param_array(vid, int, NULL, 0444);
82MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device.");
83module_param_array(pid, int, NULL, 0444);
84MODULE_PARM_DESC(pid, "Product ID for the USB audio device.");
71d848ca 85module_param(nrpacks, int, 0644);
1da177e4
LT		 86MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB.");
87module_param(async_unlink, bool, 0444);
88MODULE_PARM_DESC(async_unlink, "Use async unlink mode.");
e311334e
TLM		 89module_param_array(device_setup, int, NULL, 0444);
90MODULE_PARM_DESC(device_setup, "Specific device setup (if needed).");
1da177e4
LT		 91
92
93/*
94 * debug the h/w constraints
95 */
96/* #define HW_CONST_DEBUG */
97
98
99/*
100 *
101 */
102
92b9ac78 103#define MAX_PACKS 20
1da177e4 104#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
15a24c07 105#define MAX_URBS 8
604cf499 106#define SYNC_URBS 4 /* always four urbs for sync */
1da177e4
LT		 107#define MIN_PACKS_URB 1 /* minimum 1 packet per urb */
108
1da177e4
LT		 109struct audioformat {
110 struct list_head list;
111 snd_pcm_format_t format; /* format type */
112 unsigned int channels; /* # channels */
113 unsigned int fmt_type; /* USB audio format type (1-3) */
114 unsigned int frame_size; /* samples per frame for non-audio */
115 int iface; /* interface number */
116 unsigned char altsetting; /* corresponding alternate setting */
117 unsigned char altset_idx; /* array index of altenate setting */
118 unsigned char attributes; /* corresponding attributes of cs endpoint */
119 unsigned char endpoint; /* endpoint */
120 unsigned char ep_attr; /* endpoint attributes */
121 unsigned int maxpacksize; /* max. packet size */
122 unsigned int rates; /* rate bitmasks */
123 unsigned int rate_min, rate_max; /* min/max rates */
124 unsigned int nr_rates; /* number of rate table entries */
125 unsigned int *rate_table; /* rate table */
126};
127
86e07d34
TI		 128struct snd_usb_substream;
129
1da177e4
LT		 130struct snd_urb_ctx {
131 struct urb *urb;
55851f73 132 unsigned int buffer_size; /* size of data buffer, if data URB */
86e07d34 133 struct snd_usb_substream *subs;
1da177e4
LT		 134 int index; /* index for urb array */
135 int packets; /* number of packets per urb */
1da177e4
LT		 136};
137
138struct snd_urb_ops {
86e07d34
TI		 139 int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
140 int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
141 int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
142 int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
1da177e4
LT		 143};
144
145struct snd_usb_substream {
86e07d34 146 struct snd_usb_stream *stream;
1da177e4 147 struct usb_device *dev;
86e07d34 148 struct snd_pcm_substream *pcm_substream;
1da177e4
LT		 149 int direction; /* playback or capture */
150 int interface; /* current interface */
151 int endpoint; /* assigned endpoint */
152 struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */
153 unsigned int cur_rate; /* current rate (for hw_params callback) */
154 unsigned int period_bytes; /* current period bytes (for hw_params callback) */
155 unsigned int format; /* USB data format */
156 unsigned int datapipe; /* the data i/o pipe */
157 unsigned int syncpipe; /* 1 - async out or adaptive in */
573567e0 158 unsigned int datainterval; /* log_2 of data packet interval */
1da177e4
LT		 159 unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */
160 unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */
161 unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */
162 unsigned int freqmax; /* maximum sampling rate, used for buffer management */
163 unsigned int phase; /* phase accumulator */
164 unsigned int maxpacksize; /* max packet size in bytes */
165 unsigned int maxframesize; /* max packet size in frames */
166 unsigned int curpacksize; /* current packet size in bytes (for capture) */
167 unsigned int curframesize; /* current packet size in frames (for capture) */
168 unsigned int fill_max: 1; /* fill max packet size always */
169 unsigned int fmt_type; /* USB audio format type (1-3) */
9624ea81 170 unsigned int packs_per_ms; /* packets per millisecond (for playback) */
1da177e4
LT		 171
172 unsigned int running: 1; /* running status */
173
1da177e4 174 unsigned int hwptr_done; /* processed frame position in the buffer */
1da177e4
LT		 175 unsigned int transfer_done; /* processed frames since last period update */
176 unsigned long active_mask; /* bitmask of active urbs */
177 unsigned long unlink_mask; /* bitmask of unlinked urbs */
178
179 unsigned int nurbs; /* # urbs */
86e07d34
TI		 180 struct snd_urb_ctx dataurb[MAX_URBS]; /* data urb table */
181 struct snd_urb_ctx syncurb[SYNC_URBS]; /* sync urb table */
55851f73
CL		 182 char *syncbuf; /* sync buffer for all sync URBs */
183 dma_addr_t sync_dma; /* DMA address of syncbuf */
1da177e4
LT		 184
185 u64 formats; /* format bitmasks (all or'ed) */
186 unsigned int num_formats; /* number of supported audio formats (list) */
187 struct list_head fmt_list; /* format list */
8fec560d 188 struct snd_pcm_hw_constraint_list rate_list; /* limited rates */
1da177e4
LT		 189 spinlock_t lock;
190
191 struct snd_urb_ops ops; /* callbacks (must be filled at init) */
192};
193
194
195struct snd_usb_stream {
86e07d34
TI		 196 struct snd_usb_audio *chip;
197 struct snd_pcm *pcm;
1da177e4
LT		 198 int pcm_index;
199 unsigned int fmt_type; /* USB audio format type (1-3) */
86e07d34 200 struct snd_usb_substream substream[2];
1da177e4
LT		 201 struct list_head list;
202};
203
204
205/*
206 * we keep the snd_usb_audio_t instances by ourselves for merging
207 * the all interfaces on the same card as one sound device.
208 */
209
12aa7579 210static DEFINE_MUTEX(register_mutex);
86e07d34 211static struct snd_usb_audio *usb_chip[SNDRV_CARDS];
1da177e4
LT		 212
213
214/*
215 * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
216 * this will overflow at approx 524 kHz
217 */
77933d72 218static inline unsigned get_usb_full_speed_rate(unsigned int rate)
1da177e4
LT		 219{
220 return ((rate << 13) + 62) / 125;
221}
222
223/*
224 * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
225 * this will overflow at approx 4 MHz
226 */
77933d72 227static inline unsigned get_usb_high_speed_rate(unsigned int rate)
1da177e4
LT		 228{
229 return ((rate << 10) + 62) / 125;
230}
231
232/* convert our full speed USB rate into sampling rate in Hz */
77933d72 233static inline unsigned get_full_speed_hz(unsigned int usb_rate)
1da177e4
LT		 234{
235 return (usb_rate * 125 + (1 << 12)) >> 13;
236}
237
238/* convert our high speed USB rate into sampling rate in Hz */
77933d72 239static inline unsigned get_high_speed_hz(unsigned int usb_rate)
1da177e4
LT		 240{
241 return (usb_rate * 125 + (1 << 9)) >> 10;
242}
243
244
245/*
246 * prepare urb for full speed capture sync pipe
247 *
248 * fill the length and offset of each urb descriptor.
249 * the fixed 10.14 frequency is passed through the pipe.
250 */
86e07d34
TI		 251static int prepare_capture_sync_urb(struct snd_usb_substream *subs,
252 struct snd_pcm_runtime *runtime,
1da177e4
LT		 253 struct urb *urb)
254{
255 unsigned char *cp = urb->transfer_buffer;
88518275 256 struct snd_urb_ctx *ctx = urb->context;
1da177e4 257
1da177e4 258 urb->dev = ctx->subs->dev; /* we need to set this at each time */
ca81090a
CL		 259 urb->iso_frame_desc[0].length = 3;
260 urb->iso_frame_desc[0].offset = 0;
261 cp[0] = subs->freqn >> 2;
262 cp[1] = subs->freqn >> 10;
263 cp[2] = subs->freqn >> 18;
1da177e4
LT		 264 return 0;
265}
266
267/*
268 * prepare urb for high speed capture sync pipe
269 *
270 * fill the length and offset of each urb descriptor.
271 * the fixed 12.13 frequency is passed as 16.16 through the pipe.
272 */
86e07d34
TI		 273static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs,
274 struct snd_pcm_runtime *runtime,
1da177e4
LT		 275 struct urb *urb)
276{
277 unsigned char *cp = urb->transfer_buffer;
88518275 278 struct snd_urb_ctx *ctx = urb->context;
1da177e4 279
1da177e4 280 urb->dev = ctx->subs->dev; /* we need to set this at each time */
ca81090a
CL		 281 urb->iso_frame_desc[0].length = 4;
282 urb->iso_frame_desc[0].offset = 0;
283 cp[0] = subs->freqn;
284 cp[1] = subs->freqn >> 8;
285 cp[2] = subs->freqn >> 16;
286 cp[3] = subs->freqn >> 24;
1da177e4
LT		 287 return 0;
288}
289
290/*
291 * process after capture sync complete
292 * - nothing to do
293 */
86e07d34
TI		 294static int retire_capture_sync_urb(struct snd_usb_substream *subs,
295 struct snd_pcm_runtime *runtime,
1da177e4
LT		 296 struct urb *urb)
297{
298 return 0;
299}
300
301/*
302 * prepare urb for capture data pipe
303 *
304 * fill the offset and length of each descriptor.
305 *
306 * we use a temporary buffer to write the captured data.
307 * since the length of written data is determined by host, we cannot
308 * write onto the pcm buffer directly... the data is thus copied
309 * later at complete callback to the global buffer.
310 */
86e07d34
TI		 311static int prepare_capture_urb(struct snd_usb_substream *subs,
312 struct snd_pcm_runtime *runtime,
1da177e4
LT		 313 struct urb *urb)
314{
315 int i, offs;
88518275 316 struct snd_urb_ctx *ctx = urb->context;
1da177e4
LT		 317
318 offs = 0;
319 urb->dev = ctx->subs->dev; /* we need to set this at each time */
1da177e4
LT		 320 for (i = 0; i < ctx->packets; i++) {
321 urb->iso_frame_desc[i].offset = offs;
322 urb->iso_frame_desc[i].length = subs->curpacksize;
323 offs += subs->curpacksize;
1da177e4 324 }
1da177e4 325 urb->transfer_buffer_length = offs;
b263a9bd 326 urb->number_of_packets = ctx->packets;
1da177e4
LT		 327 return 0;
328}
329
330/*
331 * process after capture complete
332 *
333 * copy the data from each desctiptor to the pcm buffer, and
334 * update the current position.
335 */
86e07d34
TI		 336static int retire_capture_urb(struct snd_usb_substream *subs,
337 struct snd_pcm_runtime *runtime,
1da177e4
LT		 338 struct urb *urb)
339{
340 unsigned long flags;
341 unsigned char *cp;
342 int i;
343 unsigned int stride, len, oldptr;
b263a9bd 344 int period_elapsed = 0;
1da177e4
LT		 345
346 stride = runtime->frame_bits >> 3;
347
348 for (i = 0; i < urb->number_of_packets; i++) {
349 cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
350 if (urb->iso_frame_desc[i].status) {
351 snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status);
352 // continue;
353 }
354 len = urb->iso_frame_desc[i].actual_length / stride;
355 if (! len)
356 continue;
357 /* update the current pointer */
358 spin_lock_irqsave(&subs->lock, flags);
359 oldptr = subs->hwptr_done;
360 subs->hwptr_done += len;
361 if (subs->hwptr_done >= runtime->buffer_size)
362 subs->hwptr_done -= runtime->buffer_size;
363 subs->transfer_done += len;
b263a9bd
CL		 364 if (subs->transfer_done >= runtime->period_size) {
365 subs->transfer_done -= runtime->period_size;
366 period_elapsed = 1;
367 }
1da177e4
LT		 368 spin_unlock_irqrestore(&subs->lock, flags);
369 /* copy a data chunk */
370 if (oldptr + len > runtime->buffer_size) {
371 unsigned int cnt = runtime->buffer_size - oldptr;
372 unsigned int blen = cnt * stride;
373 memcpy(runtime->dma_area + oldptr * stride, cp, blen);
374 memcpy(runtime->dma_area, cp + blen, len * stride - blen);
375 } else {
376 memcpy(runtime->dma_area + oldptr * stride, cp, len * stride);
377 }
1da177e4 378 }
b263a9bd
CL		 379 if (period_elapsed)
380 snd_pcm_period_elapsed(subs->pcm_substream);
1da177e4
LT		 381 return 0;
382}
383
e4f8e656
CL		 384/*
385 * Process after capture complete when paused. Nothing to do.
386 */
387static int retire_paused_capture_urb(struct snd_usb_substream *subs,
388 struct snd_pcm_runtime *runtime,
389 struct urb *urb)
390{
391 return 0;
392}
393
1da177e4
LT		 394
395/*
396 * prepare urb for full speed playback sync pipe
397 *
398 * set up the offset and length to receive the current frequency.
399 */
400
86e07d34
TI		 401static int prepare_playback_sync_urb(struct snd_usb_substream *subs,
402 struct snd_pcm_runtime *runtime,
1da177e4
LT		 403 struct urb *urb)
404{
88518275 405 struct snd_urb_ctx *ctx = urb->context;
1da177e4 406
1da177e4 407 urb->dev = ctx->subs->dev; /* we need to set this at each time */
ca81090a
CL		 408 urb->iso_frame_desc[0].length = 3;
409 urb->iso_frame_desc[0].offset = 0;
1da177e4
LT		 410 return 0;
411}
412
413/*
414 * prepare urb for high speed playback sync pipe
415 *
416 * set up the offset and length to receive the current frequency.
417 */
418
86e07d34
TI		 419static int prepare_playback_sync_urb_hs(struct snd_usb_substream *subs,
420 struct snd_pcm_runtime *runtime,
1da177e4
LT		 421 struct urb *urb)
422{
88518275 423 struct snd_urb_ctx *ctx = urb->context;
1da177e4 424
1da177e4 425 urb->dev = ctx->subs->dev; /* we need to set this at each time */
ca81090a
CL		 426 urb->iso_frame_desc[0].length = 4;
427 urb->iso_frame_desc[0].offset = 0;
1da177e4
LT		 428 return 0;
429}
430
431/*
432 * process after full speed playback sync complete
433 *
434 * retrieve the current 10.14 frequency from pipe, and set it.
435 * the value is referred in prepare_playback_urb().
436 */
86e07d34
TI		 437static int retire_playback_sync_urb(struct snd_usb_substream *subs,
438 struct snd_pcm_runtime *runtime,
1da177e4
LT		 439 struct urb *urb)
440{
ca81090a 441 unsigned int f;
1da177e4
LT		 442 unsigned long flags;
443
ca81090a
CL		 444 if (urb->iso_frame_desc[0].status == 0 &&
445 urb->iso_frame_desc[0].actual_length == 3) {
446 f = combine_triple((u8*)urb->transfer_buffer) << 2;
50cdbf15
CL		 447 if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
448 spin_lock_irqsave(&subs->lock, flags);
449 subs->freqm = f;
450 spin_unlock_irqrestore(&subs->lock, flags);
1da177e4 451 }
1da177e4
LT		 452 }
453
454 return 0;
455}
456
457/*
458 * process after high speed playback sync complete
459 *
460 * retrieve the current 12.13 frequency from pipe, and set it.
461 * the value is referred in prepare_playback_urb().
462 */
86e07d34
TI		 463static int retire_playback_sync_urb_hs(struct snd_usb_substream *subs,
464 struct snd_pcm_runtime *runtime,
1da177e4
LT		 465 struct urb *urb)
466{
ca81090a 467 unsigned int f;
1da177e4
LT		 468 unsigned long flags;
469
ca81090a
CL		 470 if (urb->iso_frame_desc[0].status == 0 &&
471 urb->iso_frame_desc[0].actual_length == 4) {
472 f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
50cdbf15
CL		 473 if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
474 spin_lock_irqsave(&subs->lock, flags);
475 subs->freqm = f;
476 spin_unlock_irqrestore(&subs->lock, flags);
477 }
1da177e4
LT		 478 }
479
480 return 0;
481}
482
d513202e
CL		 483/*
484 * process after E-Mu 0202/0404 high speed playback sync complete
485 *
486 * These devices return the number of samples per packet instead of the number
487 * of samples per microframe.
488 */
489static int retire_playback_sync_urb_hs_emu(struct snd_usb_substream *subs,
490 struct snd_pcm_runtime *runtime,
491 struct urb *urb)
492{
493 unsigned int f;
494 unsigned long flags;
495
496 if (urb->iso_frame_desc[0].status == 0 &&
497 urb->iso_frame_desc[0].actual_length == 4) {
498 f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
499 f >>= subs->datainterval;
500 if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
501 spin_lock_irqsave(&subs->lock, flags);
502 subs->freqm = f;
503 spin_unlock_irqrestore(&subs->lock, flags);
504 }
505 }
506
507 return 0;
508}
509
9568f461
CL		 510/* determine the number of frames in the next packet */
511static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs)
512{
513 if (subs->fill_max)
514 return subs->maxframesize;
515 else {
516 subs->phase = (subs->phase & 0xffff)
517 + (subs->freqm << subs->datainterval);
518 return min(subs->phase >> 16, subs->maxframesize);
519 }
520}
521
b55bbf06 522/*
e4f8e656 523 * Prepare urb for streaming before playback starts or when paused.
b55bbf06 524 *
e4f8e656 525 * We don't have any data, so we send a frame of silence.
b55bbf06 526 */
e4f8e656
CL		 527static int prepare_nodata_playback_urb(struct snd_usb_substream *subs,
528 struct snd_pcm_runtime *runtime,
529 struct urb *urb)
b55bbf06 530{
4b284928 531 unsigned int i, offs, counts;
86e07d34 532 struct snd_urb_ctx *ctx = urb->context;
4b284928 533 int stride = runtime->frame_bits >> 3;
b55bbf06 534
4b284928 535 offs = 0;
b55bbf06
CL		 536 urb->dev = ctx->subs->dev;
537 urb->number_of_packets = subs->packs_per_ms;
538 for (i = 0; i < subs->packs_per_ms; ++i) {
9568f461 539 counts = snd_usb_audio_next_packet_size(subs);
4b284928
CL		 540 urb->iso_frame_desc[i].offset = offs * stride;
541 urb->iso_frame_desc[i].length = counts * stride;
542 offs += counts;
b55bbf06 543 }
4b284928
CL		 544 urb->transfer_buffer_length = offs * stride;
545 memset(urb->transfer_buffer,
546 subs->cur_audiofmt->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0,
547 offs * stride);
b55bbf06
CL		 548 return 0;
549}
550
1da177e4
LT		 551/*
552 * prepare urb for playback data pipe
553 *
7efd8bc8
CL		 554 * Since a URB can handle only a single linear buffer, we must use double
555 * buffering when the data to be transferred overflows the buffer boundary.
556 * To avoid inconsistencies when updating hwptr_done, we use double buffering
557 * for all URBs.
1da177e4 558 */
86e07d34
TI		 559static int prepare_playback_urb(struct snd_usb_substream *subs,
560 struct snd_pcm_runtime *runtime,
1da177e4
LT		 561 struct urb *urb)
562{
563 int i, stride, offs;
564 unsigned int counts;
565 unsigned long flags;
7efd8bc8 566 int period_elapsed = 0;
88518275 567 struct snd_urb_ctx *ctx = urb->context;
1da177e4
LT		 568
569 stride = runtime->frame_bits >> 3;
570
571 offs = 0;
572 urb->dev = ctx->subs->dev; /* we need to set this at each time */
573 urb->number_of_packets = 0;
574 spin_lock_irqsave(&subs->lock, flags);
575 for (i = 0; i < ctx->packets; i++) {
9568f461 576 counts = snd_usb_audio_next_packet_size(subs);
1da177e4
LT		 577 /* set up descriptor */
578 urb->iso_frame_desc[i].offset = offs * stride;
579 urb->iso_frame_desc[i].length = counts * stride;
580 offs += counts;
581 urb->number_of_packets++;
7efd8bc8
CL		 582 subs->transfer_done += counts;
583 if (subs->transfer_done >= runtime->period_size) {
584 subs->transfer_done -= runtime->period_size;
585 period_elapsed = 1;
1da177e4 586 if (subs->fmt_type == USB_FORMAT_TYPE_II) {
7efd8bc8
CL		 587 if (subs->transfer_done > 0) {
588 /* FIXME: fill-max mode is not
589 * supported yet */
590 offs -= subs->transfer_done;
591 counts -= subs->transfer_done;
592 urb->iso_frame_desc[i].length =
593 counts * stride;
594 subs->transfer_done = 0;
1da177e4
LT		 595 }
596 i++;
597 if (i < ctx->packets) {
598 /* add a transfer delimiter */
7efd8bc8
CL		 599 urb->iso_frame_desc[i].offset =
600 offs * stride;
1da177e4
LT		 601 urb->iso_frame_desc[i].length = 0;
602 urb->number_of_packets++;
603 }
9624ea81 604 break;
1da177e4 605 }
1da177e4 606 }
9624ea81
CL		 607 /* finish at the frame boundary at/after the period boundary */
608 if (period_elapsed &&
609 (i & (subs->packs_per_ms - 1)) == subs->packs_per_ms - 1)
610 break;
1da177e4 611 }
7efd8bc8
CL		 612 if (subs->hwptr_done + offs > runtime->buffer_size) {
613 /* err, the transferred area goes over buffer boundary. */
614 unsigned int len = runtime->buffer_size - subs->hwptr_done;
615 memcpy(urb->transfer_buffer,
616 runtime->dma_area + subs->hwptr_done * stride,
617 len * stride);
618 memcpy(urb->transfer_buffer + len * stride,
619 runtime->dma_area,
620 (offs - len) * stride);
1da177e4 621 } else {
7efd8bc8
CL		 622 memcpy(urb->transfer_buffer,
623 runtime->dma_area + subs->hwptr_done * stride,
624 offs * stride);
1da177e4 625 }
7efd8bc8
CL		 626 subs->hwptr_done += offs;
627 if (subs->hwptr_done >= runtime->buffer_size)
628 subs->hwptr_done -= runtime->buffer_size;
1da177e4
LT		 629 spin_unlock_irqrestore(&subs->lock, flags);
630 urb->transfer_buffer_length = offs * stride;
b55bbf06
CL		 631 if (period_elapsed)
632 snd_pcm_period_elapsed(subs->pcm_substream);
1da177e4
LT		 633 return 0;
634}
635
636/*
637 * process after playback data complete
7efd8bc8 638 * - nothing to do
1da177e4 639 */
86e07d34
TI		 640static int retire_playback_urb(struct snd_usb_substream *subs,
641 struct snd_pcm_runtime *runtime,
1da177e4
LT		 642 struct urb *urb)
643{
1da177e4
LT		 644 return 0;
645}
646
647
648/*
649 */
650static struct snd_urb_ops audio_urb_ops[2] = {
651 {
e4f8e656 652 .prepare = prepare_nodata_playback_urb,
1da177e4
LT		 653 .retire = retire_playback_urb,
654 .prepare_sync = prepare_playback_sync_urb,
655 .retire_sync = retire_playback_sync_urb,
656 },
657 {
658 .prepare = prepare_capture_urb,
659 .retire = retire_capture_urb,
660 .prepare_sync = prepare_capture_sync_urb,
661 .retire_sync = retire_capture_sync_urb,
662 },
663};
664
665static struct snd_urb_ops audio_urb_ops_high_speed[2] = {
666 {
e4f8e656 667 .prepare = prepare_nodata_playback_urb,
1da177e4
LT		 668 .retire = retire_playback_urb,
669 .prepare_sync = prepare_playback_sync_urb_hs,
670 .retire_sync = retire_playback_sync_urb_hs,
671 },
672 {
673 .prepare = prepare_capture_urb,
674 .retire = retire_capture_urb,
675 .prepare_sync = prepare_capture_sync_urb_hs,
676 .retire_sync = retire_capture_sync_urb,
677 },
678};
679
680/*
681 * complete callback from data urb
682 */
7d12e780 683static void snd_complete_urb(struct urb *urb)
1da177e4 684{
88518275 685 struct snd_urb_ctx *ctx = urb->context;
86e07d34
TI		 686 struct snd_usb_substream *subs = ctx->subs;
687 struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
1da177e4
LT		 688 int err = 0;
689
690 if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) ||
07f51a72 691 !subs->running || /* can be stopped during retire callback */
1da177e4
LT		 692 (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 ||
693 (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
694 clear_bit(ctx->index, &subs->active_mask);
695 if (err < 0) {
696 snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err);
697 snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
698 }
699 }
700}
701
702
703/*
704 * complete callback from sync urb
705 */
7d12e780 706static void snd_complete_sync_urb(struct urb *urb)
1da177e4 707{
88518275 708 struct snd_urb_ctx *ctx = urb->context;
86e07d34
TI		 709 struct snd_usb_substream *subs = ctx->subs;
710 struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
1da177e4
LT		 711 int err = 0;
712
713 if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) ||
07f51a72 714 !subs->running || /* can be stopped during retire callback */
1da177e4
LT		 715 (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 ||
716 (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
717 clear_bit(ctx->index + 16, &subs->active_mask);
718 if (err < 0) {
719 snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err);
720 snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
721 }
722 }
723}
724
725
6207e51b 726/* get the physical page pointer at the given offset */
86e07d34 727static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
6207e51b
CL		 728 unsigned long offset)
729{
730 void *pageptr = subs->runtime->dma_area + offset;
731 return vmalloc_to_page(pageptr);
732}
733
734/* allocate virtual buffer; may be called more than once */
86e07d34 735static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size)
6207e51b 736{
86e07d34 737 struct snd_pcm_runtime *runtime = subs->runtime;
6207e51b
CL		 738 if (runtime->dma_area) {
739 if (runtime->dma_bytes >= size)
740 return 0; /* already large enough */
b1d5776d 741 vfree(runtime->dma_area);
6207e51b 742 }
b1d5776d 743 runtime->dma_area = vmalloc(size);
07f51a72 744 if (!runtime->dma_area)
6207e51b
CL		 745 return -ENOMEM;
746 runtime->dma_bytes = size;
747 return 0;
748}
749
750/* free virtual buffer; may be called more than once */
86e07d34 751static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
6207e51b 752{
86e07d34 753 struct snd_pcm_runtime *runtime = subs->runtime;
9c4be3d3
JJ		 754
755 vfree(runtime->dma_area);
756 runtime->dma_area = NULL;
6207e51b
CL		 757 return 0;
758}
759
760
1da177e4
LT		 761/*
762 * unlink active urbs.
763 */
86e07d34 764static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep)
1da177e4
LT		 765{
766 unsigned int i;
767 int async;
768
769 subs->running = 0;
770
771 if (!force && subs->stream->chip->shutdown) /* to be sure... */
772 return -EBADFD;
773
774 async = !can_sleep && async_unlink;
775
07f51a72 776 if (!async && in_interrupt())
1da177e4
LT		 777 return 0;
778
779 for (i = 0; i < subs->nurbs; i++) {
780 if (test_bit(i, &subs->active_mask)) {
07f51a72 781 if (!test_and_set_bit(i, &subs->unlink_mask)) {
1da177e4 782 struct urb *u = subs->dataurb[i].urb;
b375a049 783 if (async)
1da177e4 784 usb_unlink_urb(u);
b375a049 785 else
1da177e4
LT		 786 usb_kill_urb(u);
787 }
788 }
789 }
790 if (subs->syncpipe) {
791 for (i = 0; i < SYNC_URBS; i++) {
792 if (test_bit(i+16, &subs->active_mask)) {
07f51a72 793 if (!test_and_set_bit(i+16, &subs->unlink_mask)) {
1da177e4 794 struct urb *u = subs->syncurb[i].urb;
b375a049 795 if (async)
1da177e4 796 usb_unlink_urb(u);
b375a049 797 else
1da177e4
LT		 798 usb_kill_urb(u);
799 }
800 }
801 }
802 }
803 return 0;
804}
805
806
32e19e88
CL		 807static const char *usb_error_string(int err)
808{
809 switch (err) {
810 case -ENODEV:
811 return "no device";
812 case -ENOENT:
813 return "endpoint not enabled";
814 case -EPIPE:
815 return "endpoint stalled";
816 case -ENOSPC:
817 return "not enough bandwidth";
818 case -ESHUTDOWN:
819 return "device disabled";
820 case -EHOSTUNREACH:
821 return "device suspended";
822 case -EINVAL:
823 case -EAGAIN:
824 case -EFBIG:
825 case -EMSGSIZE:
826 return "internal error";
827 default:
828 return "unknown error";
829 }
830}
831
1da177e4
LT		 832/*
833 * set up and start data/sync urbs
834 */
86e07d34 835static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime)
1da177e4
LT		 836{
837 unsigned int i;
838 int err;
839
840 if (subs->stream->chip->shutdown)
841 return -EBADFD;
842
843 for (i = 0; i < subs->nurbs; i++) {
844 snd_assert(subs->dataurb[i].urb, return -EINVAL);
845 if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) {
846 snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i);
847 goto __error;
848 }
849 }
850 if (subs->syncpipe) {
851 for (i = 0; i < SYNC_URBS; i++) {
852 snd_assert(subs->syncurb[i].urb, return -EINVAL);
853 if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) {
854 snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i);
855 goto __error;
856 }
857 }
858 }
859
860 subs->active_mask = 0;
861 subs->unlink_mask = 0;
862 subs->running = 1;
863 for (i = 0; i < subs->nurbs; i++) {
32e19e88
CL		 864 err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC);
865 if (err < 0) {
866 snd_printk(KERN_ERR "cannot submit datapipe "
867 "for urb %d, error %d: %s\n",
868 i, err, usb_error_string(err));
1da177e4
LT		 869 goto __error;
870 }
871 set_bit(i, &subs->active_mask);
872 }
873 if (subs->syncpipe) {
874 for (i = 0; i < SYNC_URBS; i++) {
32e19e88
CL		 875 err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC);
876 if (err < 0) {
877 snd_printk(KERN_ERR "cannot submit syncpipe "
878 "for urb %d, error %d: %s\n",
879 i, err, usb_error_string(err));
1da177e4
LT		 880 goto __error;
881 }
882 set_bit(i + 16, &subs->active_mask);
883 }
884 }
885 return 0;
886
887 __error:
888 // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
889 deactivate_urbs(subs, 0, 0);
890 return -EPIPE;
891}
892
893
894/*
895 * wait until all urbs are processed.
896 */
86e07d34 897static int wait_clear_urbs(struct snd_usb_substream *subs)
1da177e4 898{
b27c187f 899 unsigned long end_time = jiffies + msecs_to_jiffies(1000);
1da177e4
LT		 900 unsigned int i;
901 int alive;
902
903 do {
904 alive = 0;
905 for (i = 0; i < subs->nurbs; i++) {
906 if (test_bit(i, &subs->active_mask))
907 alive++;
908 }
909 if (subs->syncpipe) {
910 for (i = 0; i < SYNC_URBS; i++) {
911 if (test_bit(i + 16, &subs->active_mask))
912 alive++;
913 }
914 }
915 if (! alive)
916 break;
8433a509 917 schedule_timeout_uninterruptible(1);
b27c187f 918 } while (time_before(jiffies, end_time));
1da177e4
LT		 919 if (alive)
920 snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
921 return 0;
922}
923
924
925/*
926 * return the current pcm pointer. just return the hwptr_done value.
927 */
86e07d34 928static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream)
1da177e4 929{
86e07d34 930 struct snd_usb_substream *subs;
daa150ef
CL		 931 snd_pcm_uframes_t hwptr_done;
932
86e07d34 933 subs = (struct snd_usb_substream *)substream->runtime->private_data;
daa150ef
CL		 934 spin_lock(&subs->lock);
935 hwptr_done = subs->hwptr_done;
936 spin_unlock(&subs->lock);
937 return hwptr_done;
1da177e4
LT		 938}
939
940
941/*
b55bbf06 942 * start/stop playback substream
1da177e4 943 */
86e07d34 944static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream *substream,
b55bbf06 945 int cmd)
1da177e4 946{
86e07d34 947 struct snd_usb_substream *subs = substream->runtime->private_data;
b55bbf06
CL		 948
949 switch (cmd) {
950 case SNDRV_PCM_TRIGGER_START:
e4f8e656 951 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
b55bbf06
CL		 952 subs->ops.prepare = prepare_playback_urb;
953 return 0;
954 case SNDRV_PCM_TRIGGER_STOP:
955 return deactivate_urbs(subs, 0, 0);
e4f8e656
CL		 956 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
957 subs->ops.prepare = prepare_nodata_playback_urb;
958 return 0;
b55bbf06
CL		 959 default:
960 return -EINVAL;
961 }
962}
963
964/*
965 * start/stop capture substream
966 */
86e07d34 967static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream *substream,
b55bbf06
CL		 968 int cmd)
969{
86e07d34 970 struct snd_usb_substream *subs = substream->runtime->private_data;
1da177e4
LT		 971
972 switch (cmd) {
973 case SNDRV_PCM_TRIGGER_START:
e4f8e656 974 subs->ops.retire = retire_capture_urb;
b55bbf06 975 return start_urbs(subs, substream->runtime);
1da177e4 976 case SNDRV_PCM_TRIGGER_STOP:
b55bbf06 977 return deactivate_urbs(subs, 0, 0);
e4f8e656
CL		 978 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
979 subs->ops.retire = retire_paused_capture_urb;
980 return 0;
981 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
982 subs->ops.retire = retire_capture_urb;
983 return 0;
1da177e4 984 default:
b55bbf06 985 return -EINVAL;
1da177e4 986 }
1da177e4
LT		 987}
988
989
990/*
991 * release a urb data
992 */
86e07d34 993static void release_urb_ctx(struct snd_urb_ctx *u)
1da177e4
LT		 994{
995 if (u->urb) {
55851f73
CL		 996 if (u->buffer_size)
997 usb_buffer_free(u->subs->dev, u->buffer_size,
998 u->urb->transfer_buffer,
999 u->urb->transfer_dma);
1da177e4
LT		 1000 usb_free_urb(u->urb);
1001 u->urb = NULL;
1002 }
1da177e4
LT		 1003}
1004
1005/*
1006 * release a substream
1007 */
86e07d34 1008static void release_substream_urbs(struct snd_usb_substream *subs, int force)
1da177e4
LT		 1009{
1010 int i;
1011
1012 /* stop urbs (to be sure) */
1013 deactivate_urbs(subs, force, 1);
1014 wait_clear_urbs(subs);
1015
1016 for (i = 0; i < MAX_URBS; i++)
1017 release_urb_ctx(&subs->dataurb[i]);
1018 for (i = 0; i < SYNC_URBS; i++)
1019 release_urb_ctx(&subs->syncurb[i]);
55851f73
CL		 1020 usb_buffer_free(subs->dev, SYNC_URBS * 4,
1021 subs->syncbuf, subs->sync_dma);
1022 subs->syncbuf = NULL;
1da177e4
LT		 1023 subs->nurbs = 0;
1024}
1025
1026/*
1027 * initialize a substream for plaback/capture
1028 */
86e07d34 1029static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int period_bytes,
1da177e4
LT		 1030 unsigned int rate, unsigned int frame_bits)
1031{
1032 unsigned int maxsize, n, i;
1033 int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
a93bf990 1034 unsigned int npacks[MAX_URBS], urb_packs, total_packs, packs_per_ms;
1da177e4
LT		 1035
1036 /* calculate the frequency in 16.16 format */
1037 if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
1038 subs->freqn = get_usb_full_speed_rate(rate);
1039 else
1040 subs->freqn = get_usb_high_speed_rate(rate);
1041 subs->freqm = subs->freqn;
573567e0
CL		 1042 /* calculate max. frequency */
1043 if (subs->maxpacksize) {
1044 /* whatever fits into a max. size packet */
1da177e4 1045 maxsize = subs->maxpacksize;
573567e0
CL		 1046 subs->freqmax = (maxsize / (frame_bits >> 3))
1047 << (16 - subs->datainterval);
1048 } else {
1049 /* no max. packet size: just take 25% higher than nominal */
1050 subs->freqmax = subs->freqn + (subs->freqn >> 2);
1051 maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3))
1052 >> (16 - subs->datainterval);
1da177e4 1053 }
573567e0 1054 subs->phase = 0;
1da177e4
LT		 1055
1056 if (subs->fill_max)
1057 subs->curpacksize = subs->maxpacksize;
1058 else
1059 subs->curpacksize = maxsize;
1060
a93bf990
CL		 1061 if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
1062 packs_per_ms = 8 >> subs->datainterval;
1063 else
1064 packs_per_ms = 1;
9624ea81 1065 subs->packs_per_ms = packs_per_ms;
a93bf990 1066
71d848ca 1067 if (is_playback) {
1da177e4 1068 urb_packs = nrpacks;
71d848ca
CL		 1069 urb_packs = max(urb_packs, (unsigned int)MIN_PACKS_URB);
1070 urb_packs = min(urb_packs, (unsigned int)MAX_PACKS);
1071 } else
15a24c07 1072 urb_packs = 1;
a93bf990 1073 urb_packs *= packs_per_ms;
1da177e4 1074
1da177e4 1075 /* decide how many packets to be used */
15a24c07 1076 if (is_playback) {
d6db392e
CL		 1077 unsigned int minsize;
1078 /* determine how small a packet can be */
1079 minsize = (subs->freqn >> (16 - subs->datainterval))
1080 * (frame_bits >> 3);
7efd8bc8 1081 /* with sync from device, assume it can be 12% lower */
d6db392e 1082 if (subs->syncpipe)
7efd8bc8 1083 minsize -= minsize >> 3;
d6db392e
CL		 1084 minsize = max(minsize, 1u);
1085 total_packs = (period_bytes + minsize - 1) / minsize;
a93bf990
CL		 1086 /* round up to multiple of packs_per_ms */
1087 total_packs = (total_packs + packs_per_ms - 1)
1088 & ~(packs_per_ms - 1);
1089 /* we need at least two URBs for queueing */
1090 if (total_packs < 2 * MIN_PACKS_URB * packs_per_ms)
1091 total_packs = 2 * MIN_PACKS_URB * packs_per_ms;
15a24c07
CL		 1092 } else {
1093 total_packs = MAX_URBS * urb_packs;
1094 }
1da177e4
LT		 1095 subs->nurbs = (total_packs + urb_packs - 1) / urb_packs;
1096 if (subs->nurbs > MAX_URBS) {
1097 /* too much... */
1098 subs->nurbs = MAX_URBS;
1099 total_packs = MAX_URBS * urb_packs;
1100 }
1101 n = total_packs;
1102 for (i = 0; i < subs->nurbs; i++) {
1103 npacks[i] = n > urb_packs ? urb_packs : n;
1104 n -= urb_packs;
1105 }
1106 if (subs->nurbs <= 1) {
1107 /* too little - we need at least two packets
1108 * to ensure contiguous playback/capture
1109 */
1110 subs->nurbs = 2;
1111 npacks[0] = (total_packs + 1) / 2;
1112 npacks[1] = total_packs - npacks[0];
a93bf990 1113 } else if (npacks[subs->nurbs-1] < MIN_PACKS_URB * packs_per_ms) {
1da177e4
LT		 1114 /* the last packet is too small.. */
1115 if (subs->nurbs > 2) {
1116 /* merge to the first one */
1117 npacks[0] += npacks[subs->nurbs - 1];
1118 subs->nurbs--;
1119 } else {
1120 /* divide to two */
1121 subs->nurbs = 2;
1122 npacks[0] = (total_packs + 1) / 2;
1123 npacks[1] = total_packs - npacks[0];
1124 }
1125 }
1126
1127 /* allocate and initialize data urbs */
1128 for (i = 0; i < subs->nurbs; i++) {
86e07d34 1129 struct snd_urb_ctx *u = &subs->dataurb[i];
1da177e4
LT		 1130 u->index = i;
1131 u->subs = subs;
1da177e4 1132 u->packets = npacks[i];
55851f73 1133 u->buffer_size = maxsize * u->packets;
1da177e4
LT		 1134 if (subs->fmt_type == USB_FORMAT_TYPE_II)
1135 u->packets++; /* for transfer delimiter */
1da177e4 1136 u->urb = usb_alloc_urb(u->packets, GFP_KERNEL);
07f51a72 1137 if (!u->urb)
55851f73
CL		 1138 goto out_of_memory;
1139 u->urb->transfer_buffer =
1140 usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL,
1141 &u->urb->transfer_dma);
07f51a72 1142 if (!u->urb->transfer_buffer)
55851f73 1143 goto out_of_memory;
1da177e4 1144 u->urb->pipe = subs->datapipe;
55851f73 1145 u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
573567e0 1146 u->urb->interval = 1 << subs->datainterval;
1da177e4 1147 u->urb->context = u;
3527a008 1148 u->urb->complete = snd_complete_urb;
1da177e4
LT		 1149 }
1150
1151 if (subs->syncpipe) {
1152 /* allocate and initialize sync urbs */
55851f73
CL		 1153 subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4,
1154 GFP_KERNEL, &subs->sync_dma);
07f51a72 1155 if (!subs->syncbuf)
55851f73 1156 goto out_of_memory;
1da177e4 1157 for (i = 0; i < SYNC_URBS; i++) {
86e07d34 1158 struct snd_urb_ctx *u = &subs->syncurb[i];
1da177e4
LT		 1159 u->index = i;
1160 u->subs = subs;
ca81090a
CL		 1161 u->packets = 1;
1162 u->urb = usb_alloc_urb(1, GFP_KERNEL);
07f51a72 1163 if (!u->urb)
55851f73 1164 goto out_of_memory;
ca81090a 1165 u->urb->transfer_buffer = subs->syncbuf + i * 4;
55851f73 1166 u->urb->transfer_dma = subs->sync_dma + i * 4;
ca81090a 1167 u->urb->transfer_buffer_length = 4;
1da177e4 1168 u->urb->pipe = subs->syncpipe;
55851f73
CL		 1169 u->urb->transfer_flags = URB_ISO_ASAP |
1170 URB_NO_TRANSFER_DMA_MAP;
ca81090a 1171 u->urb->number_of_packets = 1;
1149a64f 1172 u->urb->interval = 1 << subs->syncinterval;
1da177e4 1173 u->urb->context = u;
3527a008 1174 u->urb->complete = snd_complete_sync_urb;
1da177e4
LT		 1175 }
1176 }
1177 return 0;
55851f73
CL		 1178
1179out_of_memory:
1180 release_substream_urbs(subs, 0);
1181 return -ENOMEM;
1da177e4
LT		 1182}
1183
1184
1185/*
1186 * find a matching audio format
1187 */
86e07d34 1188static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format,
1da177e4
LT		 1189 unsigned int rate, unsigned int channels)
1190{
1191 struct list_head *p;
1192 struct audioformat *found = NULL;
1193 int cur_attr = 0, attr;
1194
1195 list_for_each(p, &subs->fmt_list) {
1196 struct audioformat *fp;
1197 fp = list_entry(p, struct audioformat, list);
1198 if (fp->format != format || fp->channels != channels)
1199 continue;
1200 if (rate < fp->rate_min || rate > fp->rate_max)
1201 continue;
1202 if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) {
1203 unsigned int i;
1204 for (i = 0; i < fp->nr_rates; i++)
1205 if (fp->rate_table[i] == rate)
1206 break;
1207 if (i >= fp->nr_rates)
1208 continue;
1209 }
1210 attr = fp->ep_attr & EP_ATTR_MASK;
1211 if (! found) {
1212 found = fp;
1213 cur_attr = attr;
1214 continue;
1215 }
1216 /* avoid async out and adaptive in if the other method
1217 * supports the same format.
1218 * this is a workaround for the case like
1219 * M-audio audiophile USB.
1220 */
1221 if (attr != cur_attr) {
1222 if ((attr == EP_ATTR_ASYNC &&
1223 subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
1224 (attr == EP_ATTR_ADAPTIVE &&
1225 subs->direction == SNDRV_PCM_STREAM_CAPTURE))
1226 continue;
1227 if ((cur_attr == EP_ATTR_ASYNC &&
1228 subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
1229 (cur_attr == EP_ATTR_ADAPTIVE &&
1230 subs->direction == SNDRV_PCM_STREAM_CAPTURE)) {
1231 found = fp;
1232 cur_attr = attr;
1233 continue;
1234 }
1235 }
1236 /* find the format with the largest max. packet size */
1237 if (fp->maxpacksize > found->maxpacksize) {
1238 found = fp;
1239 cur_attr = attr;
1240 }
1241 }
1242 return found;
1243}
1244
1245
1246/*
1247 * initialize the picth control and sample rate
1248 */
1249static int init_usb_pitch(struct usb_device *dev, int iface,
1250 struct usb_host_interface *alts,
1251 struct audioformat *fmt)
1252{
1253 unsigned int ep;
1254 unsigned char data[1];
1255 int err;
1256
1257 ep = get_endpoint(alts, 0)->bEndpointAddress;
1258 /* if endpoint has pitch control, enable it */
1259 if (fmt->attributes & EP_CS_ATTR_PITCH_CONTROL) {
1260 data[0] = 1;
1261 if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
1262 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
1263 PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
1264 snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n",
1265 dev->devnum, iface, ep);
1266 return err;
1267 }
1268 }
1269 return 0;
1270}
1271
1272static int init_usb_sample_rate(struct usb_device *dev, int iface,
1273 struct usb_host_interface *alts,
1274 struct audioformat *fmt, int rate)
1275{
1276 unsigned int ep;
1277 unsigned char data[3];
1278 int err;
1279
1280 ep = get_endpoint(alts, 0)->bEndpointAddress;
1281 /* if endpoint has sampling rate control, set it */
1282 if (fmt->attributes & EP_CS_ATTR_SAMPLE_RATE) {
1283 int crate;
1284 data[0] = rate;
1285 data[1] = rate >> 8;
1286 data[2] = rate >> 16;
1287 if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
1288 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
1289 SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
1290 snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep 0x%x\n",
1291 dev->devnum, iface, fmt->altsetting, rate, ep);
1292 return err;
1293 }
1294 if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR,
1295 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
1296 SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
1297 snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep 0x%x\n",
1298 dev->devnum, iface, fmt->altsetting, ep);
1299 return 0; /* some devices don't support reading */
1300 }
1301 crate = data[0] | (data[1] << 8) | (data[2] << 16);
1302 if (crate != rate) {
1303 snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate);
1304 // runtime->rate = crate;
1305 }
1306 }
1307 return 0;
1308}
1309
1310/*
1311 * find a matching format and set up the interface
1312 */
86e07d34 1313static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
1da177e4
LT		 1314{
1315 struct usb_device *dev = subs->dev;
1316 struct usb_host_interface *alts;
1317 struct usb_interface_descriptor *altsd;
1318 struct usb_interface *iface;
1319 unsigned int ep, attr;
1320 int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
1321 int err;
1322
1323 iface = usb_ifnum_to_if(dev, fmt->iface);
1324 snd_assert(iface, return -EINVAL);
1325 alts = &iface->altsetting[fmt->altset_idx];
1326 altsd = get_iface_desc(alts);
1327 snd_assert(altsd->bAlternateSetting == fmt->altsetting, return -EINVAL);
1328
1329 if (fmt == subs->cur_audiofmt)
1330 return 0;
1331
1332 /* close the old interface */
1333 if (subs->interface >= 0 && subs->interface != fmt->iface) {
5149fe2c
ON		 1334 if (usb_set_interface(subs->dev, subs->interface, 0) < 0) {
1335 snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed\n",
1336 dev->devnum, fmt->iface, fmt->altsetting);
1337 return -EIO;
1338 }
1da177e4
LT		 1339 subs->interface = -1;
1340 subs->format = 0;
1341 }
1342
1343 /* set interface */
1344 if (subs->interface != fmt->iface || subs->format != fmt->altset_idx) {
1345 if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) {
1346 snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n",
1347 dev->devnum, fmt->iface, fmt->altsetting);
1348 return -EIO;
1349 }
1350 snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting);
1351 subs->interface = fmt->iface;
1352 subs->format = fmt->altset_idx;
1353 }
1354
1355 /* create a data pipe */
1356 ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK;
1357 if (is_playback)
1358 subs->datapipe = usb_sndisocpipe(dev, ep);
1359 else
1360 subs->datapipe = usb_rcvisocpipe(dev, ep);
573567e0
CL		 1361 if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH &&
1362 get_endpoint(alts, 0)->bInterval >= 1 &&
1363 get_endpoint(alts, 0)->bInterval <= 4)
1364 subs->datainterval = get_endpoint(alts, 0)->bInterval - 1;
1365 else
1366 subs->datainterval = 0;
1da177e4
LT		 1367 subs->syncpipe = subs->syncinterval = 0;
1368 subs->maxpacksize = fmt->maxpacksize;
1369 subs->fill_max = 0;
1370
1371 /* we need a sync pipe in async OUT or adaptive IN mode */
1372 /* check the number of EP, since some devices have broken
1373 * descriptors which fool us. if it has only one EP,
1374 * assume it as adaptive-out or sync-in.
1375 */
1376 attr = fmt->ep_attr & EP_ATTR_MASK;
1377 if (((is_playback && attr == EP_ATTR_ASYNC) ||
1378 (! is_playback && attr == EP_ATTR_ADAPTIVE)) &&
1379 altsd->bNumEndpoints >= 2) {
1380 /* check sync-pipe endpoint */
1381 /* ... and check descriptor size before accessing bSynchAddress
1382 because there is a version of the SB Audigy 2 NX firmware lacking
1383 the audio fields in the endpoint descriptors */
1384 if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 ||
1385 (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
1386 get_endpoint(alts, 1)->bSynchAddress != 0)) {
1387 snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
1388 dev->devnum, fmt->iface, fmt->altsetting);
1389 return -EINVAL;
1390 }
1391 ep = get_endpoint(alts, 1)->bEndpointAddress;
1392 if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
1393 (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) ||
1394 (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) {
1395 snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
1396 dev->devnum, fmt->iface, fmt->altsetting);
1397 return -EINVAL;
1398 }
1399 ep &= USB_ENDPOINT_NUMBER_MASK;
1400 if (is_playback)
1401 subs->syncpipe = usb_rcvisocpipe(dev, ep);
1402 else
1403 subs->syncpipe = usb_sndisocpipe(dev, ep);
1149a64f
CL		 1404 if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
1405 get_endpoint(alts, 1)->bRefresh >= 1 &&
1406 get_endpoint(alts, 1)->bRefresh <= 9)
1407 subs->syncinterval = get_endpoint(alts, 1)->bRefresh;
604cf499 1408 else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
1149a64f 1409 subs->syncinterval = 1;
604cf499
CL		 1410 else if (get_endpoint(alts, 1)->bInterval >= 1 &&
1411 get_endpoint(alts, 1)->bInterval <= 16)
1412 subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1;
1413 else
1414 subs->syncinterval = 3;
1da177e4
LT		 1415 }
1416
1417 /* always fill max packet size */
1418 if (fmt->attributes & EP_CS_ATTR_FILL_MAX)
1419 subs->fill_max = 1;
1420
1421 if ((err = init_usb_pitch(dev, subs->interface, alts, fmt)) < 0)
1422 return err;
1423
1424 subs->cur_audiofmt = fmt;
1425
1426#if 0
2a56f51b
PM		 1427 printk("setting done: format = %d, rate = %d..%d, channels = %d\n",
1428 fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels);
1da177e4
LT		 1429 printk(" datapipe = 0x%0x, syncpipe = 0x%0x\n",
1430 subs->datapipe, subs->syncpipe);
1431#endif
1432
1433 return 0;
1434}
1435
1436/*
1437 * hw_params callback
1438 *
1439 * allocate a buffer and set the given audio format.
1440 *
1441 * so far we use a physically linear buffer although packetize transfer
1442 * doesn't need a continuous area.
1443 * if sg buffer is supported on the later version of alsa, we'll follow
1444 * that.
1445 */
86e07d34
TI		 1446static int snd_usb_hw_params(struct snd_pcm_substream *substream,
1447 struct snd_pcm_hw_params *hw_params)
1da177e4 1448{
88518275 1449 struct snd_usb_substream *subs = substream->runtime->private_data;
1da177e4
LT		 1450 struct audioformat *fmt;
1451 unsigned int channels, rate, format;
1452 int ret, changed;
1453
6207e51b
CL		 1454 ret = snd_pcm_alloc_vmalloc_buffer(substream,
1455 params_buffer_bytes(hw_params));
1da177e4
LT		 1456 if (ret < 0)
1457 return ret;
1458
1459 format = params_format(hw_params);
1460 rate = params_rate(hw_params);
1461 channels = params_channels(hw_params);
1462 fmt = find_format(subs, format, rate, channels);
07f51a72 1463 if (!fmt) {
21a3479a
JK		 1464 snd_printd(KERN_DEBUG "cannot set format: format = 0x%x, rate = %d, channels = %d\n",
1465 format, rate, channels);
1da177e4
LT		 1466 return -EINVAL;
1467 }
1468
1469 changed = subs->cur_audiofmt != fmt ||
1470 subs->period_bytes != params_period_bytes(hw_params) ||
1471 subs->cur_rate != rate;
1472 if ((ret = set_format(subs, fmt)) < 0)
1473 return ret;
1474
1475 if (subs->cur_rate != rate) {
1476 struct usb_host_interface *alts;
1477 struct usb_interface *iface;
1478 iface = usb_ifnum_to_if(subs->dev, fmt->iface);
1479 alts = &iface->altsetting[fmt->altset_idx];
1480 ret = init_usb_sample_rate(subs->dev, subs->interface, alts, fmt, rate);
1481 if (ret < 0)
1482 return ret;
1483 subs->cur_rate = rate;
1484 }
1485
1486 if (changed) {
1487 /* format changed */
1488 release_substream_urbs(subs, 0);
1489 /* influenced: period_bytes, channels, rate, format, */
1490 ret = init_substream_urbs(subs, params_period_bytes(hw_params),
1491 params_rate(hw_params),
1492 snd_pcm_format_physical_width(params_format(hw_params)) * params_channels(hw_params));
1493 }
1494
1495 return ret;
1496}
1497
1498/*
1499 * hw_free callback
1500 *
1501 * reset the audio format and release the buffer
1502 */
86e07d34 1503static int snd_usb_hw_free(struct snd_pcm_substream *substream)
1da177e4 1504{
88518275 1505 struct snd_usb_substream *subs = substream->runtime->private_data;
1da177e4
LT		 1506
1507 subs->cur_audiofmt = NULL;
1508 subs->cur_rate = 0;
1509 subs->period_bytes = 0;
de1b8b93
TI		 1510 if (!subs->stream->chip->shutdown)
1511 release_substream_urbs(subs, 0);
6207e51b 1512 return snd_pcm_free_vmalloc_buffer(substream);
1da177e4
LT		 1513}
1514
1515/*
1516 * prepare callback
1517 *
1518 * only a few subtle things...
1519 */
86e07d34 1520static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
1da177e4 1521{
86e07d34
TI		 1522 struct snd_pcm_runtime *runtime = substream->runtime;
1523 struct snd_usb_substream *subs = runtime->private_data;
1da177e4
LT		 1524
1525 if (! subs->cur_audiofmt) {
1526 snd_printk(KERN_ERR "usbaudio: no format is specified!\n");
1527 return -ENXIO;
1528 }
1529
1530 /* some unit conversions in runtime */
1531 subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize);
1532 subs->curframesize = bytes_to_frames(runtime, subs->curpacksize);
1533
1534 /* reset the pointer */
1da177e4 1535 subs->hwptr_done = 0;
1da177e4
LT		 1536 subs->transfer_done = 0;
1537 subs->phase = 0;
1538
1539 /* clear urbs (to be sure) */
1540 deactivate_urbs(subs, 0, 1);
1541 wait_clear_urbs(subs);
1542
b55bbf06
CL		 1543 /* for playback, submit the URBs now; otherwise, the first hwptr_done
1544 * updates for all URBs would happen at the same time when starting */
1545 if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
e4f8e656 1546 subs->ops.prepare = prepare_nodata_playback_urb;
b55bbf06
CL		 1547 return start_urbs(subs, runtime);
1548 } else
1549 return 0;
1da177e4
LT		 1550}
1551
1700f308 1552static struct snd_pcm_hardware snd_usb_hardware =
1da177e4 1553{
49045d3d
CL		 1554 .info = SNDRV_PCM_INFO_MMAP |
1555 SNDRV_PCM_INFO_MMAP_VALID |
1556 SNDRV_PCM_INFO_BATCH |
1557 SNDRV_PCM_INFO_INTERLEAVED |
e4f8e656
CL		 1558 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1559 SNDRV_PCM_INFO_PAUSE,
d31cbbfd 1560 .buffer_bytes_max = 1024 * 1024,
1da177e4 1561 .period_bytes_min = 64,
d31cbbfd 1562 .period_bytes_max = 512 * 1024,
1da177e4
LT		 1563 .periods_min = 2,
1564 .periods_max = 1024,
1565};
1566
1567/*
1568 * h/w constraints
1569 */
1570
1571#ifdef HW_CONST_DEBUG
1572#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
1573#else
1574#define hwc_debug(fmt, args...) /**/
1575#endif
1576
86e07d34 1577static int hw_check_valid_format(struct snd_pcm_hw_params *params, struct audioformat *fp)
1da177e4 1578{
86e07d34
TI		 1579 struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
1580 struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
1581 struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
1da177e4
LT		 1582
1583 /* check the format */
07f51a72 1584 if (!snd_mask_test(fmts, fp->format)) {
1da177e4
LT		 1585 hwc_debug(" > check: no supported format %d\n", fp->format);
1586 return 0;
1587 }
1588 /* check the channels */
1589 if (fp->channels < ct->min || fp->channels > ct->max) {
1590 hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max);
1591 return 0;
1592 }
1593 /* check the rate is within the range */
1594 if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) {
1595 hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max);
1596 return 0;
1597 }
1598 if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) {
1599 hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min);
1600 return 0;
1601 }
1602 return 1;
1603}
1604
86e07d34
TI		 1605static int hw_rule_rate(struct snd_pcm_hw_params *params,
1606 struct snd_pcm_hw_rule *rule)
1da177e4 1607{
86e07d34 1608 struct snd_usb_substream *subs = rule->private;
1da177e4 1609 struct list_head *p;
86e07d34 1610 struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
1da177e4
LT		 1611 unsigned int rmin, rmax;
1612 int changed;
1613
1614 hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max);
1615 changed = 0;
1616 rmin = rmax = 0;
1617 list_for_each(p, &subs->fmt_list) {
1618 struct audioformat *fp;
1619 fp = list_entry(p, struct audioformat, list);
07f51a72 1620 if (!hw_check_valid_format(params, fp))
1da177e4
LT		 1621 continue;
1622 if (changed++) {
1623 if (rmin > fp->rate_min)
1624 rmin = fp->rate_min;
1625 if (rmax < fp->rate_max)
1626 rmax = fp->rate_max;
1627 } else {
1628 rmin = fp->rate_min;
1629 rmax = fp->rate_max;
1630 }
1631 }
1632
07f51a72 1633 if (!changed) {
1da177e4
LT		 1634 hwc_debug(" --> get empty\n");
1635 it->empty = 1;
1636 return -EINVAL;
1637 }
1638
1639 changed = 0;
1640 if (it->min < rmin) {
1641 it->min = rmin;
1642 it->openmin = 0;
1643 changed = 1;
1644 }
1645 if (it->max > rmax) {
1646 it->max = rmax;
1647 it->openmax = 0;
1648 changed = 1;
1649 }
1650 if (snd_interval_checkempty(it)) {
1651 it->empty = 1;
1652 return -EINVAL;
1653 }
1654 hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
1655 return changed;
1656}
1657
1658
86e07d34
TI		 1659static int hw_rule_channels(struct snd_pcm_hw_params *params,
1660 struct snd_pcm_hw_rule *rule)
1da177e4 1661{
86e07d34 1662 struct snd_usb_substream *subs = rule->private;
1da177e4 1663 struct list_head *p;
86e07d34 1664 struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
1da177e4
LT		 1665 unsigned int rmin, rmax;
1666 int changed;
1667
1668 hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max);
1669 changed = 0;
1670 rmin = rmax = 0;
1671 list_for_each(p, &subs->fmt_list) {
1672 struct audioformat *fp;
1673 fp = list_entry(p, struct audioformat, list);
07f51a72 1674 if (!hw_check_valid_format(params, fp))
1da177e4
LT		 1675 continue;
1676 if (changed++) {
1677 if (rmin > fp->channels)
1678 rmin = fp->channels;
1679 if (rmax < fp->channels)
1680 rmax = fp->channels;
1681 } else {
1682 rmin = fp->channels;
1683 rmax = fp->channels;
1684 }
1685 }
1686
07f51a72 1687 if (!changed) {
1da177e4
LT		 1688 hwc_debug(" --> get empty\n");
1689 it->empty = 1;
1690 return -EINVAL;
1691 }
1692
1693 changed = 0;
1694 if (it->min < rmin) {
1695 it->min = rmin;
1696 it->openmin = 0;
1697 changed = 1;
1698 }
1699 if (it->max > rmax) {
1700 it->max = rmax;
1701 it->openmax = 0;
1702 changed = 1;
1703 }
1704 if (snd_interval_checkempty(it)) {
1705 it->empty = 1;
1706 return -EINVAL;
1707 }
1708 hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
1709 return changed;
1710}
1711
86e07d34
TI		 1712static int hw_rule_format(struct snd_pcm_hw_params *params,
1713 struct snd_pcm_hw_rule *rule)
1da177e4 1714{
86e07d34 1715 struct snd_usb_substream *subs = rule->private;
1da177e4 1716 struct list_head *p;
86e07d34 1717 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
1da177e4
LT		 1718 u64 fbits;
1719 u32 oldbits[2];
1720 int changed;
1721
1722 hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]);
1723 fbits = 0;
1724 list_for_each(p, &subs->fmt_list) {
1725 struct audioformat *fp;
1726 fp = list_entry(p, struct audioformat, list);
07f51a72 1727 if (!hw_check_valid_format(params, fp))
1da177e4
LT		 1728 continue;
1729 fbits |= (1ULL << fp->format);
1730 }
1731
1732 oldbits[0] = fmt->bits[0];
1733 oldbits[1] = fmt->bits[1];
1734 fmt->bits[0] &= (u32)fbits;
1735 fmt->bits[1] &= (u32)(fbits >> 32);
07f51a72 1736 if (!fmt->bits[0] && !fmt->bits[1]) {
1da177e4
LT		 1737 hwc_debug(" --> get empty\n");
1738 return -EINVAL;
1739 }
1740 changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]);
1741 hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed);
1742 return changed;
1743}
1744
1745#define MAX_MASK 64
1746
1747/*
1748 * check whether the registered audio formats need special hw-constraints
1749 */
86e07d34 1750static int check_hw_params_convention(struct snd_usb_substream *subs)
1da177e4
LT		 1751{
1752 int i;
1753 u32 *channels;
1754 u32 *rates;
1755 u32 cmaster, rmaster;
1756 u32 rate_min = 0, rate_max = 0;
1757 struct list_head *p;
1758 int err = 1;
1759
1760 channels = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL);
1761 rates = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL);
5a220c86
TI		 1762 if (!channels || !rates) {
1763 err = -ENOMEM;
ff17e953 1764 goto __out;
5a220c86 1765 }
1da177e4
LT		 1766
1767 list_for_each(p, &subs->fmt_list) {
1768 struct audioformat *f;
1769 f = list_entry(p, struct audioformat, list);
1770 /* unconventional channels? */
1771 if (f->channels > 32)
1772 goto __out;
1773 /* continuous rate min/max matches? */
1774 if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) {
1775 if (rate_min && f->rate_min != rate_min)
1776 goto __out;
1777 if (rate_max && f->rate_max != rate_max)
1778 goto __out;
1779 rate_min = f->rate_min;
1780 rate_max = f->rate_max;
1781 }
1782 /* combination of continuous rates and fixed rates? */
1783 if (rates[f->format] & SNDRV_PCM_RATE_CONTINUOUS) {
1784 if (f->rates != rates[f->format])
1785 goto __out;
1786 }
1787 if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) {
1788 if (rates[f->format] && rates[f->format] != f->rates)
1789 goto __out;
1790 }
1791 channels[f->format] |= (1 << f->channels);
1792 rates[f->format] |= f->rates;
a79eee8d 1793 /* needs knot? */
918f3a0e 1794 if (f->rates & SNDRV_PCM_RATE_KNOT)
a79eee8d 1795 goto __out;
1da177e4
LT		 1796 }
1797 /* check whether channels and rates match for all formats */
1798 cmaster = rmaster = 0;
1799 for (i = 0; i < MAX_MASK; i++) {
1800 if (cmaster != channels[i] && cmaster && channels[i])
1801 goto __out;
1802 if (rmaster != rates[i] && rmaster && rates[i])
1803 goto __out;
1804 if (channels[i])
1805 cmaster = channels[i];
1806 if (rates[i])
1807 rmaster = rates[i];
1808 }
1809 /* check whether channels match for all distinct rates */
1810 memset(channels, 0, MAX_MASK * sizeof(u32));
1811 list_for_each(p, &subs->fmt_list) {
1812 struct audioformat *f;
1813 f = list_entry(p, struct audioformat, list);
1814 if (f->rates & SNDRV_PCM_RATE_CONTINUOUS)
1815 continue;
1816 for (i = 0; i < 32; i++) {
1817 if (f->rates & (1 << i))
1818 channels[i] |= (1 << f->channels);
1819 }
1820 }
1821 cmaster = 0;
1822 for (i = 0; i < 32; i++) {
1823 if (cmaster != channels[i] && cmaster && channels[i])
1824 goto __out;
1825 if (channels[i])
1826 cmaster = channels[i];
1827 }
1828 err = 0;
1829
1830 __out:
1831 kfree(channels);
1832 kfree(rates);
1833 return err;
1834}
1835
a79eee8d
LR		 1836/*
1837 * If the device supports unusual bit rates, does the request meet these?
1838 */
1839static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime,
1840 struct snd_usb_substream *subs)
1841{
8fec560d
TI		 1842 struct audioformat *fp;
1843 int count = 0, needs_knot = 0;
a79eee8d
LR		 1844 int err;
1845
8fec560d
TI		 1846 list_for_each_entry(fp, &subs->fmt_list, list) {
1847 if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)
1848 return 0;
1849 count += fp->nr_rates;
918f3a0e 1850 if (fp->rates & SNDRV_PCM_RATE_KNOT)
8fec560d 1851 needs_knot = 1;
a79eee8d 1852 }
8fec560d
TI		 1853 if (!needs_knot)
1854 return 0;
1855
1856 subs->rate_list.count = count;
1857 subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL);
1858 subs->rate_list.mask = 0;
1859 count = 0;
1860 list_for_each_entry(fp, &subs->fmt_list, list) {
1861 int i;
1862 for (i = 0; i < fp->nr_rates; i++)
1863 subs->rate_list.list[count++] = fp->rate_table[i];
1864 }
1865 err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1866 &subs->rate_list);
1867 if (err < 0)
1868 return err;
a79eee8d
LR		 1869
1870 return 0;
1871}
1872
1da177e4
LT		 1873
1874/*
1875 * set up the runtime hardware information.
1876 */
1877
86e07d34 1878static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs)
1da177e4
LT		 1879{
1880 struct list_head *p;
1881 int err;
1882
1883 runtime->hw.formats = subs->formats;
1884
1885 runtime->hw.rate_min = 0x7fffffff;
1886 runtime->hw.rate_max = 0;
1887 runtime->hw.channels_min = 256;
1888 runtime->hw.channels_max = 0;
1889 runtime->hw.rates = 0;
1890 /* check min/max rates and channels */
1891 list_for_each(p, &subs->fmt_list) {
1892 struct audioformat *fp;
1893 fp = list_entry(p, struct audioformat, list);
1894 runtime->hw.rates |= fp->rates;
1895 if (runtime->hw.rate_min > fp->rate_min)
1896 runtime->hw.rate_min = fp->rate_min;
1897 if (runtime->hw.rate_max < fp->rate_max)
1898 runtime->hw.rate_max = fp->rate_max;
1899 if (runtime->hw.channels_min > fp->channels)
1900 runtime->hw.channels_min = fp->channels;
1901 if (runtime->hw.channels_max < fp->channels)
1902 runtime->hw.channels_max = fp->channels;
1903 if (fp->fmt_type == USB_FORMAT_TYPE_II && fp->frame_size > 0) {
1904 /* FIXME: there might be more than one audio formats... */
1905 runtime->hw.period_bytes_min = runtime->hw.period_bytes_max =
1906 fp->frame_size;
1907 }
1908 }
1909
1910 /* set the period time minimum 1ms */
81c4899f
TI		 1911 /* FIXME: high-speed mode allows 125us minimum period, but many parts
1912 * in the current code assume the 1ms period.
1913 */
1da177e4 1914 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
81c4899f 1915 1000 * MIN_PACKS_URB,
1da177e4
LT		 1916 /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX);
1917
5a220c86
TI		 1918 err = check_hw_params_convention(subs);
1919 if (err < 0)
1920 return err;
1921 else if (err) {
1da177e4
LT		 1922 hwc_debug("setting extra hw constraints...\n");
1923 if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1924 hw_rule_rate, subs,
1925 SNDRV_PCM_HW_PARAM_FORMAT,
1926 SNDRV_PCM_HW_PARAM_CHANNELS,
1927 -1)) < 0)
1928 return err;
1929 if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1930 hw_rule_channels, subs,
1931 SNDRV_PCM_HW_PARAM_FORMAT,
1932 SNDRV_PCM_HW_PARAM_RATE,
1933 -1)) < 0)
1934 return err;
1935 if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
1936 hw_rule_format, subs,
1937 SNDRV_PCM_HW_PARAM_RATE,
1938 SNDRV_PCM_HW_PARAM_CHANNELS,
1939 -1)) < 0)
1940 return err;
a79eee8d
LR		 1941 if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0)
1942 return err;
1da177e4
LT		 1943 }
1944 return 0;
1945}
1946
1700f308 1947static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction)
1da177e4 1948{
86e07d34
TI		 1949 struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
1950 struct snd_pcm_runtime *runtime = substream->runtime;
1951 struct snd_usb_substream *subs = &as->substream[direction];
1da177e4
LT		 1952
1953 subs->interface = -1;
1954 subs->format = 0;
1700f308 1955 runtime->hw = snd_usb_hardware;
1da177e4
LT		 1956 runtime->private_data = subs;
1957 subs->pcm_substream = substream;
1958 return setup_hw_info(runtime, subs);
1959}
1960
86e07d34 1961static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction)
1da177e4 1962{
86e07d34
TI		 1963 struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
1964 struct snd_usb_substream *subs = &as->substream[direction];
1da177e4
LT		 1965
1966 if (subs->interface >= 0) {
1967 usb_set_interface(subs->dev, subs->interface, 0);
1968 subs->interface = -1;
1969 }
1970 subs->pcm_substream = NULL;
1971 return 0;
1972}
1973
86e07d34 1974static int snd_usb_playback_open(struct snd_pcm_substream *substream)
1da177e4 1975{
1700f308 1976 return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK);
1da177e4
LT		 1977}
1978
86e07d34 1979static int snd_usb_playback_close(struct snd_pcm_substream *substream)
1da177e4
LT		 1980{
1981 return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK);
1982}
1983
86e07d34 1984static int snd_usb_capture_open(struct snd_pcm_substream *substream)
1da177e4 1985{
1700f308 1986 return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE);
1da177e4
LT		 1987}
1988
86e07d34 1989static int snd_usb_capture_close(struct snd_pcm_substream *substream)
1da177e4
LT		 1990{
1991 return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE);
1992}
1993
86e07d34 1994static struct snd_pcm_ops snd_usb_playback_ops = {
1da177e4
LT		 1995 .open = snd_usb_playback_open,
1996 .close = snd_usb_playback_close,
1997 .ioctl = snd_pcm_lib_ioctl,
1998 .hw_params = snd_usb_hw_params,
1999 .hw_free = snd_usb_hw_free,
2000 .prepare = snd_usb_pcm_prepare,
b55bbf06 2001 .trigger = snd_usb_pcm_playback_trigger,
1da177e4 2002 .pointer = snd_usb_pcm_pointer,
6207e51b 2003 .page = snd_pcm_get_vmalloc_page,
1da177e4
LT		 2004};
2005
86e07d34 2006static struct snd_pcm_ops snd_usb_capture_ops = {
1da177e4
LT		 2007 .open = snd_usb_capture_open,
2008 .close = snd_usb_capture_close,
2009 .ioctl = snd_pcm_lib_ioctl,
2010 .hw_params = snd_usb_hw_params,
2011 .hw_free = snd_usb_hw_free,
2012 .prepare = snd_usb_pcm_prepare,
b55bbf06 2013 .trigger = snd_usb_pcm_capture_trigger,
1da177e4 2014 .pointer = snd_usb_pcm_pointer,
6207e51b 2015 .page = snd_pcm_get_vmalloc_page,
1da177e4
LT		 2016};
2017
2018
2019
2020/*
2021 * helper functions
2022 */
2023
2024/*
2025 * combine bytes and get an integer value
2026 */
2027unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size)
2028{
2029 switch (size) {
2030 case 1: return *bytes;
2031 case 2: return combine_word(bytes);
2032 case 3: return combine_triple(bytes);
2033 case 4: return combine_quad(bytes);
2034 default: return 0;
2035 }
2036}
2037
2038/*
2039 * parse descriptor buffer and return the pointer starting the given
2040 * descriptor type.
2041 */
2042void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype)
2043{
2044 u8 *p, *end, *next;
2045
2046 p = descstart;
2047 end = p + desclen;
2048 for (; p < end;) {
2049 if (p[0] < 2)
2050 return NULL;
2051 next = p + p[0];
2052 if (next > end)
2053 return NULL;
2054 if (p[1] == dtype && (!after || (void *)p > after)) {
2055 return p;
2056 }
2057 p = next;
2058 }
2059 return NULL;
2060}
2061
2062/*
2063 * find a class-specified interface descriptor with the given subtype.
2064 */
2065void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype)
2066{
2067 unsigned char *p = after;
2068
2069 while ((p = snd_usb_find_desc(buffer, buflen, p,
2070 USB_DT_CS_INTERFACE)) != NULL) {
2071 if (p[0] >= 3 && p[2] == dsubtype)
2072 return p;
2073 }
2074 return NULL;
2075}
2076
2077/*
2078 * Wrapper for usb_control_msg().
2079 * Allocates a temp buffer to prevent dmaing from/to the stack.
2080 */
2081int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
2082 __u8 requesttype, __u16 value, __u16 index, void *data,
2083 __u16 size, int timeout)
2084{
2085 int err;
2086 void *buf = NULL;
2087
2088 if (size > 0) {
52978be6 2089 buf = kmemdup(data, size, GFP_KERNEL);
1da177e4
LT		 2090 if (!buf)
2091 return -ENOMEM;
1da177e4
LT		 2092 }
2093 err = usb_control_msg(dev, pipe, request, requesttype,
2094 value, index, buf, size, timeout);
2095 if (size > 0) {
2096 memcpy(data, buf, size);
2097 kfree(buf);
2098 }
2099 return err;
2100}
2101
2102
2103/*
2104 * entry point for linux usb interface
2105 */
2106
2107static int usb_audio_probe(struct usb_interface *intf,
2108 const struct usb_device_id *id);
2109static void usb_audio_disconnect(struct usb_interface *intf);
93521d27
AM		 2110
2111#ifdef CONFIG_PM
f85bf29c
ON		 2112static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message);
2113static int usb_audio_resume(struct usb_interface *intf);
93521d27
AM		 2114#else
2115#define usb_audio_suspend NULL
2116#define usb_audio_resume NULL
2117#endif
1da177e4
LT		 2118
2119static struct usb_device_id usb_audio_ids [] = {
2120#include "usbquirks.h"
2121 { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
2122 .bInterfaceClass = USB_CLASS_AUDIO,
2123 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL },
2124 { } /* Terminating entry */
2125};
2126
2127MODULE_DEVICE_TABLE (usb, usb_audio_ids);
2128
2129static struct usb_driver usb_audio_driver = {
1da177e4
LT		 2130 .name = "snd-usb-audio",
2131 .probe = usb_audio_probe,
2132 .disconnect = usb_audio_disconnect,
f85bf29c
ON		 2133 .suspend = usb_audio_suspend,
2134 .resume = usb_audio_resume,
1da177e4
LT		 2135 .id_table = usb_audio_ids,
2136};
2137
2138
727f317a 2139#if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS)
21a3479a 2140
1da177e4
LT		 2141/*
2142 * proc interface for list the supported pcm formats
2143 */
86e07d34 2144static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
1da177e4
LT		 2145{
2146 struct list_head *p;
2147 static char *sync_types[4] = {
2148 "NONE", "ASYNC", "ADAPTIVE", "SYNC"
2149 };
2150
2151 list_for_each(p, &subs->fmt_list) {
2152 struct audioformat *fp;
2153 fp = list_entry(p, struct audioformat, list);
2154 snd_iprintf(buffer, " Interface %d\n", fp->iface);
2155 snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
3f72a30c 2156 snd_iprintf(buffer, " Format: 0x%x\n", fp->format);
1da177e4
LT		 2157 snd_iprintf(buffer, " Channels: %d\n", fp->channels);
2158 snd_iprintf(buffer, " Endpoint: %d %s (%s)\n",
2159 fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
2160 fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
2161 sync_types[(fp->ep_attr & EP_ATTR_MASK) >> 2]);
2162 if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
2163 snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",
2164 fp->rate_min, fp->rate_max);
2165 } else {
2166 unsigned int i;
2167 snd_iprintf(buffer, " Rates: ");
2168 for (i = 0; i < fp->nr_rates; i++) {
2169 if (i > 0)
2170 snd_iprintf(buffer, ", ");
2171 snd_iprintf(buffer, "%d", fp->rate_table[i]);
2172 }
2173 snd_iprintf(buffer, "\n");
2174 }
2175 // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
2176 // snd_iprintf(buffer, " EP Attribute = 0x%x\n", fp->attributes);
2177 }
2178}
2179
86e07d34 2180static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
1da177e4
LT		 2181{
2182 if (subs->running) {
2183 unsigned int i;
2184 snd_iprintf(buffer, " Status: Running\n");
2185 snd_iprintf(buffer, " Interface = %d\n", subs->interface);
2186 snd_iprintf(buffer, " Altset = %d\n", subs->format);
2187 snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs);
2188 for (i = 0; i < subs->nurbs; i++)
2189 snd_iprintf(buffer, "%d ", subs->dataurb[i].packets);
2190 snd_iprintf(buffer, "]\n");
2191 snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize);
08fe1589 2192 snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
1da177e4
LT		 2193 snd_usb_get_speed(subs->dev) == USB_SPEED_FULL
2194 ? get_full_speed_hz(subs->freqm)
08fe1589
CL		 2195 : get_high_speed_hz(subs->freqm),
2196 subs->freqm >> 16, subs->freqm & 0xffff);
1da177e4
LT		 2197 } else {
2198 snd_iprintf(buffer, " Status: Stop\n");
2199 }
2200}
2201
86e07d34 2202static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1da177e4 2203{
86e07d34 2204 struct snd_usb_stream *stream = entry->private_data;
1da177e4
LT		 2205
2206 snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
2207
2208 if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
2209 snd_iprintf(buffer, "\nPlayback:\n");
2210 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
2211 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
2212 }
2213 if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
2214 snd_iprintf(buffer, "\nCapture:\n");
2215 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
2216 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
2217 }
2218}
2219
86e07d34 2220static void proc_pcm_format_add(struct snd_usb_stream *stream)
1da177e4 2221{
86e07d34 2222 struct snd_info_entry *entry;
1da177e4 2223 char name[32];
86e07d34 2224 struct snd_card *card = stream->chip->card;
1da177e4
LT		 2225
2226 sprintf(name, "stream%d", stream->pcm_index);
07f51a72 2227 if (!snd_card_proc_new(card, name, &entry))
bf850204 2228 snd_info_set_text_ops(entry, stream, proc_pcm_format_read);
1da177e4
LT		 2229}
2230
21a3479a
JK		 2231#else
2232
2233static inline void proc_pcm_format_add(struct snd_usb_stream *stream)
2234{
2235}
2236
2237#endif
1da177e4
LT		 2238
2239/*
2240 * initialize the substream instance.
2241 */
2242
86e07d34 2243static void init_substream(struct snd_usb_stream *as, int stream, struct audioformat *fp)
1da177e4 2244{
86e07d34 2245 struct snd_usb_substream *subs = &as->substream[stream];
1da177e4
LT		 2246
2247 INIT_LIST_HEAD(&subs->fmt_list);
2248 spin_lock_init(&subs->lock);
2249
2250 subs->stream = as;
2251 subs->direction = stream;
2252 subs->dev = as->chip->dev;
d513202e 2253 if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) {
1da177e4 2254 subs->ops = audio_urb_ops[stream];
d513202e 2255 } else {
1da177e4 2256 subs->ops = audio_urb_ops_high_speed[stream];
d513202e
CL		 2257 switch (as->chip->usb_id) {
2258 case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
2259 case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
2260 subs->ops.retire_sync = retire_playback_sync_urb_hs_emu;
2261 break;
2262 }
2263 }
1da177e4
LT		 2264 snd_pcm_set_ops(as->pcm, stream,
2265 stream == SNDRV_PCM_STREAM_PLAYBACK ?
2266 &snd_usb_playback_ops : &snd_usb_capture_ops);
2267
2268 list_add_tail(&fp->list, &subs->fmt_list);
2269 subs->formats |= 1ULL << fp->format;
2270 subs->endpoint = fp->endpoint;
2271 subs->num_formats++;
2272 subs->fmt_type = fp->fmt_type;
2273}
2274
2275
2276/*
2277 * free a substream
2278 */
86e07d34 2279static void free_substream(struct snd_usb_substream *subs)
1da177e4
LT		 2280{
2281 struct list_head *p, *n;
2282
07f51a72 2283 if (!subs->num_formats)
1da177e4
LT		 2284 return; /* not initialized */
2285 list_for_each_safe(p, n, &subs->fmt_list) {
2286 struct audioformat *fp = list_entry(p, struct audioformat, list);
2287 kfree(fp->rate_table);
2288 kfree(fp);
2289 }
8fec560d 2290 kfree(subs->rate_list.list);
1da177e4
LT		 2291}
2292
2293
2294/*
2295 * free a usb stream instance
2296 */
86e07d34 2297static void snd_usb_audio_stream_free(struct snd_usb_stream *stream)
1da177e4
LT		 2298{
2299 free_substream(&stream->substream[0]);
2300 free_substream(&stream->substream[1]);
2301 list_del(&stream->list);
2302 kfree(stream);
2303}
2304
86e07d34 2305static void snd_usb_audio_pcm_free(struct snd_pcm *pcm)
1da177e4 2306{
86e07d34 2307 struct snd_usb_stream *stream = pcm->private_data;
1da177e4
LT		 2308 if (stream) {
2309 stream->pcm = NULL;
1da177e4
LT		 2310 snd_usb_audio_stream_free(stream);
2311 }
2312}
2313
2314
2315/*
2316 * add this endpoint to the chip instance.
2317 * if a stream with the same endpoint already exists, append to it.
2318 * if not, create a new pcm stream.
2319 */
86e07d34 2320static int add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp)
1da177e4
LT		 2321{
2322 struct list_head *p;
86e07d34
TI		 2323 struct snd_usb_stream *as;
2324 struct snd_usb_substream *subs;
2325 struct snd_pcm *pcm;
1da177e4
LT		 2326 int err;
2327
2328 list_for_each(p, &chip->pcm_list) {
86e07d34 2329 as = list_entry(p, struct snd_usb_stream, list);
1da177e4
LT		 2330 if (as->fmt_type != fp->fmt_type)
2331 continue;
2332 subs = &as->substream[stream];
07f51a72 2333 if (!subs->endpoint)
1da177e4
LT		 2334 continue;
2335 if (subs->endpoint == fp->endpoint) {
2336 list_add_tail(&fp->list, &subs->fmt_list);
2337 subs->num_formats++;
2338 subs->formats |= 1ULL << fp->format;
2339 return 0;
2340 }
2341 }
2342 /* look for an empty stream */
2343 list_for_each(p, &chip->pcm_list) {
86e07d34 2344 as = list_entry(p, struct snd_usb_stream, list);
1da177e4
LT		 2345 if (as->fmt_type != fp->fmt_type)
2346 continue;
2347 subs = &as->substream[stream];
2348 if (subs->endpoint)
2349 continue;
2350 err = snd_pcm_new_stream(as->pcm, stream, 1);
2351 if (err < 0)
2352 return err;
2353 init_substream(as, stream, fp);
2354 return 0;
2355 }
2356
2357 /* create a new pcm */
59feddb2 2358 as = kzalloc(sizeof(*as), GFP_KERNEL);
07f51a72 2359 if (!as)
1da177e4 2360 return -ENOMEM;
1da177e4
LT		 2361 as->pcm_index = chip->pcm_devs;
2362 as->chip = chip;
2363 as->fmt_type = fp->fmt_type;
2364 err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs,
2365 stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0,
2366 stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1,
2367 &pcm);
2368 if (err < 0) {
2369 kfree(as);
2370 return err;
2371 }
2372 as->pcm = pcm;
2373 pcm->private_data = as;
2374 pcm->private_free = snd_usb_audio_pcm_free;
2375 pcm->info_flags = 0;
2376 if (chip->pcm_devs > 0)
2377 sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs);
2378 else
2379 strcpy(pcm->name, "USB Audio");
2380
2381 init_substream(as, stream, fp);
2382
2383 list_add(&as->list, &chip->pcm_list);
2384 chip->pcm_devs++;
2385
2386 proc_pcm_format_add(as);
2387
2388 return 0;
2389}
2390
2391
2392/*
2393 * check if the device uses big-endian samples
2394 */
86e07d34 2395static int is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
1da177e4 2396{
27d10f56
CL		 2397 switch (chip->usb_id) {
2398 case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
2399 if (fp->endpoint & USB_DIR_IN)
1da177e4 2400 return 1;
27d10f56
CL		 2401 break;
2402 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
f8c78b82
TLM		 2403 if (device_setup[chip->index] == 0x00 ||
2404 fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3)
2405 return 1;
1da177e4
LT		 2406 }
2407 return 0;
2408}
2409
2410/*
2411 * parse the audio format type I descriptor
2412 * and returns the corresponding pcm format
2413 *
2414 * @dev: usb device
2415 * @fp: audioformat record
2416 * @format: the format tag (wFormatTag)
2417 * @fmt: the format type descriptor
2418 */
86e07d34 2419static int parse_audio_format_i_type(struct snd_usb_audio *chip, struct audioformat *fp,
1da177e4
LT		 2420 int format, unsigned char *fmt)
2421{
2422 int pcm_format;
2423 int sample_width, sample_bytes;
2424
2425 /* FIXME: correct endianess and sign? */
2426 pcm_format = -1;
2427 sample_width = fmt[6];
2428 sample_bytes = fmt[5];
2429 switch (format) {
2430 case 0: /* some devices don't define this correctly... */
2431 snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n",
27d10f56 2432 chip->dev->devnum, fp->iface, fp->altsetting);
1da177e4
LT		 2433 /* fall-through */
2434 case USB_AUDIO_FORMAT_PCM:
2435 if (sample_width > sample_bytes * 8) {
2436 snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
27d10f56 2437 chip->dev->devnum, fp->iface, fp->altsetting,
1da177e4
LT		 2438 sample_width, sample_bytes);
2439 }
2440 /* check the format byte size */
2441 switch (fmt[5]) {
2442 case 1:
2443 pcm_format = SNDRV_PCM_FORMAT_S8;
2444 break;
2445 case 2:
27d10f56 2446 if (is_big_endian_format(chip, fp))
1da177e4
LT		 2447 pcm_format = SNDRV_PCM_FORMAT_S16_BE; /* grrr, big endian!! */
2448 else
2449 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
2450 break;
2451 case 3:
27d10f56 2452 if (is_big_endian_format(chip, fp))
1da177e4
LT		 2453 pcm_format = SNDRV_PCM_FORMAT_S24_3BE; /* grrr, big endian!! */
2454 else
2455 pcm_format = SNDRV_PCM_FORMAT_S24_3LE;
2456 break;
2457 case 4:
2458 pcm_format = SNDRV_PCM_FORMAT_S32_LE;
2459 break;
2460 default:
2461 snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
27d10f56
CL		 2462 chip->dev->devnum, fp->iface,
2463 fp->altsetting, sample_width, sample_bytes);
1da177e4
LT		 2464 break;
2465 }
2466 break;
2467 case USB_AUDIO_FORMAT_PCM8:
2a56f51b
PM		 2468 pcm_format = SNDRV_PCM_FORMAT_U8;
2469
2470 /* Dallas DS4201 workaround: it advertises U8 format, but really
2471 supports S8. */
27d10f56 2472 if (chip->usb_id == USB_ID(0x04fa, 0x4201))
1da177e4 2473 pcm_format = SNDRV_PCM_FORMAT_S8;
1da177e4
LT		 2474 break;
2475 case USB_AUDIO_FORMAT_IEEE_FLOAT:
2476 pcm_format = SNDRV_PCM_FORMAT_FLOAT_LE;
2477 break;
2478 case USB_AUDIO_FORMAT_ALAW:
2479 pcm_format = SNDRV_PCM_FORMAT_A_LAW;
2480 break;
2481 case USB_AUDIO_FORMAT_MU_LAW:
2482 pcm_format = SNDRV_PCM_FORMAT_MU_LAW;
2483 break;
2484 default:
2485 snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n",
27d10f56 2486 chip->dev->devnum, fp->iface, fp->altsetting, format);
1da177e4
LT		 2487 break;
2488 }
2489 return pcm_format;
2490}
2491
2492
2493/*
2494 * parse the format descriptor and stores the possible sample rates
2495 * on the audioformat table.
2496 *
2497 * @dev: usb device
2498 * @fp: audioformat record
2499 * @fmt: the format descriptor
2500 * @offset: the start offset of descriptor pointing the rate type
2501 * (7 for type I and II, 8 for type II)
2502 */
86e07d34 2503static int parse_audio_format_rates(struct snd_usb_audio *chip, struct audioformat *fp,
1da177e4
LT		 2504 unsigned char *fmt, int offset)
2505{
2506 int nr_rates = fmt[offset];
918f3a0e 2507
1da177e4
LT		 2508 if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
2509 snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n",
27d10f56 2510 chip->dev->devnum, fp->iface, fp->altsetting);
1da177e4
LT		 2511 return -1;
2512 }
2513
2514 if (nr_rates) {
2515 /*
2516 * build the rate table and bitmap flags
2517 */
918f3a0e 2518 int r, idx;
beb60119 2519 unsigned int nonzero_rates = 0;
918f3a0e 2520
1da177e4
LT		 2521 fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
2522 if (fp->rate_table == NULL) {
2523 snd_printk(KERN_ERR "cannot malloc\n");
2524 return -1;
2525 }
2526
2527 fp->nr_rates = nr_rates;
2528 fp->rate_min = fp->rate_max = combine_triple(&fmt[8]);
2529 for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
987411b7
CL		 2530 unsigned int rate = combine_triple(&fmt[idx]);
2531 /* C-Media CM6501 mislabels its 96 kHz altsetting */
2532 if (rate == 48000 && nr_rates == 1 &&
2533 chip->usb_id == USB_ID(0x0d8c, 0x0201) &&
2534 fp->altsetting == 5 && fp->maxpacksize == 392)
2535 rate = 96000;
2536 fp->rate_table[r] = rate;
beb60119 2537 nonzero_rates |= rate;
1da177e4
LT		 2538 if (rate < fp->rate_min)
2539 fp->rate_min = rate;
2540 else if (rate > fp->rate_max)
2541 fp->rate_max = rate;
918f3a0e 2542 fp->rates |= snd_pcm_rate_to_rate_bit(rate);
1da177e4 2543 }
beb60119
GJ		 2544 if (!nonzero_rates) {
2545 hwc_debug("All rates were zero. Skipping format!\n");
2546 return -1;
2547 }
1da177e4
LT		 2548 } else {
2549 /* continuous rates */
2550 fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
2551 fp->rate_min = combine_triple(&fmt[offset + 1]);
2552 fp->rate_max = combine_triple(&fmt[offset + 4]);
2553 }
2554 return 0;
2555}
2556
2557/*
2558 * parse the format type I and III descriptors
2559 */
86e07d34 2560static int parse_audio_format_i(struct snd_usb_audio *chip, struct audioformat *fp,
1da177e4
LT		 2561 int format, unsigned char *fmt)
2562{
2563 int pcm_format;
2564
2565 if (fmt[3] == USB_FORMAT_TYPE_III) {
2566 /* FIXME: the format type is really IECxxx
2567 * but we give normal PCM format to get the existing
2568 * apps working...
2569 */
cac19c3b
TLM		 2570 switch (chip->usb_id) {
2571
2572 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2573 if (device_setup[chip->index] == 0x00 &&
2574 fp->altsetting == 6)
2575 pcm_format = SNDRV_PCM_FORMAT_S16_BE;
2576 else
2577 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
2578 break;
2579 default:
2580 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
2581 }
1da177e4 2582 } else {
27d10f56 2583 pcm_format = parse_audio_format_i_type(chip, fp, format, fmt);
1da177e4
LT		 2584 if (pcm_format < 0)
2585 return -1;
2586 }
2587 fp->format = pcm_format;
2588 fp->channels = fmt[4];
2589 if (fp->channels < 1) {
2590 snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
27d10f56 2591 chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
1da177e4
LT		 2592 return -1;
2593 }
27d10f56 2594 return parse_audio_format_rates(chip, fp, fmt, 7);
1da177e4
LT		 2595}
2596
2597/*
2598 * prase the format type II descriptor
2599 */
86e07d34 2600static int parse_audio_format_ii(struct snd_usb_audio *chip, struct audioformat *fp,
1da177e4
LT		 2601 int format, unsigned char *fmt)
2602{
2603 int brate, framesize;
2604 switch (format) {
2605 case USB_AUDIO_FORMAT_AC3:
2606 /* FIXME: there is no AC3 format defined yet */
2607 // fp->format = SNDRV_PCM_FORMAT_AC3;
2608 fp->format = SNDRV_PCM_FORMAT_U8; /* temporarily hack to receive byte streams */
2609 break;
2610 case USB_AUDIO_FORMAT_MPEG:
2611 fp->format = SNDRV_PCM_FORMAT_MPEG;
2612 break;
2613 default:
2614 snd_printd(KERN_INFO "%d:%u:%d : unknown format tag 0x%x is detected. processed as MPEG.\n",
27d10f56 2615 chip->dev->devnum, fp->iface, fp->altsetting, format);
1da177e4
LT		 2616 fp->format = SNDRV_PCM_FORMAT_MPEG;
2617 break;
2618 }
2619 fp->channels = 1;
2620 brate = combine_word(&fmt[4]); /* fmt[4,5] : wMaxBitRate (in kbps) */
2621 framesize = combine_word(&fmt[6]); /* fmt[6,7]: wSamplesPerFrame */
2622 snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
2623 fp->frame_size = framesize;
27d10f56 2624 return parse_audio_format_rates(chip, fp, fmt, 8); /* fmt[8..] sample rates */
1da177e4
LT		 2625}
2626
86e07d34 2627static int parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
1da177e4
LT		 2628 int format, unsigned char *fmt, int stream)
2629{
2630 int err;
2631
2632 switch (fmt[3]) {
2633 case USB_FORMAT_TYPE_I:
2634 case USB_FORMAT_TYPE_III:
27d10f56 2635 err = parse_audio_format_i(chip, fp, format, fmt);
1da177e4
LT		 2636 break;
2637 case USB_FORMAT_TYPE_II:
27d10f56 2638 err = parse_audio_format_ii(chip, fp, format, fmt);
1da177e4
LT		 2639 break;
2640 default:
2641 snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
27d10f56 2642 chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]);
1da177e4
LT		 2643 return -1;
2644 }
2645 fp->fmt_type = fmt[3];
2646 if (err < 0)
2647 return err;
2648#if 1
33159378 2649 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
1da177e4
LT		 2650 /* extigy apparently supports sample rates other than 48k
2651 * but not in ordinary way. so we enable only 48k atm.
2652 */
27d10f56 2653 if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
33159378
CL		 2654 chip->usb_id == USB_ID(0x041e, 0x3020) ||
2655 chip->usb_id == USB_ID(0x041e, 0x3061)) {
1da177e4 2656 if (fmt[3] == USB_FORMAT_TYPE_I &&
8c1872dc
CL		 2657 fp->rates != SNDRV_PCM_RATE_48000 &&
2658 fp->rates != SNDRV_PCM_RATE_96000)
b4d3f9d4 2659 return -1;
1da177e4
LT		 2660 }
2661#endif
2662 return 0;
2663}
2664
e311334e
TLM		 2665static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
2666 int iface, int altno);
86e07d34 2667static int parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no)
1da177e4
LT		 2668{
2669 struct usb_device *dev;
2670 struct usb_interface *iface;
2671 struct usb_host_interface *alts;
2672 struct usb_interface_descriptor *altsd;
2673 int i, altno, err, stream;
2674 int format;
2675 struct audioformat *fp;
2676 unsigned char *fmt, *csep;
b9d43bcd 2677 int num;
1da177e4
LT		 2678
2679 dev = chip->dev;
2680
2681 /* parse the interface's altsettings */
2682 iface = usb_ifnum_to_if(dev, iface_no);
b9d43bcd
PM		 2683
2684 num = iface->num_altsetting;
2685
2686 /*
2687 * Dallas DS4201 workaround: It presents 5 altsettings, but the last
2688 * one misses syncpipe, and does not produce any sound.
2689 */
2690 if (chip->usb_id == USB_ID(0x04fa, 0x4201))
2691 num = 4;
2692
2693 for (i = 0; i < num; i++) {
1da177e4
LT		 2694 alts = &iface->altsetting[i];
2695 altsd = get_iface_desc(alts);
2696 /* skip invalid one */
2697 if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
2698 altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
2699 (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING &&
2700 altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) ||
2701 altsd->bNumEndpoints < 1 ||
2702 le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0)
2703 continue;
2704 /* must be isochronous */
2705 if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
2706 USB_ENDPOINT_XFER_ISOC)
2707 continue;
2708 /* check direction */
2709 stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ?
2710 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
2711 altno = altsd->bAlternateSetting;
e311334e
TLM		 2712
2713 /* audiophile usb: skip altsets incompatible with device_setup
2714 */
2715 if (chip->usb_id == USB_ID(0x0763, 0x2003) &&
2716 audiophile_skip_setting_quirk(chip, iface_no, altno))
2717 continue;
1da177e4
LT		 2718
2719 /* get audio formats */
2720 fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, AS_GENERAL);
2721 if (!fmt) {
2722 snd_printk(KERN_ERR "%d:%u:%d : AS_GENERAL descriptor not found\n",
2723 dev->devnum, iface_no, altno);
2724 continue;
2725 }
2726
2727 if (fmt[0] < 7) {
2728 snd_printk(KERN_ERR "%d:%u:%d : invalid AS_GENERAL desc\n",
2729 dev->devnum, iface_no, altno);
2730 continue;
2731 }
2732
2733 format = (fmt[6] << 8) | fmt[5]; /* remember the format value */
2734
2735 /* get format type */
2736 fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, FORMAT_TYPE);
2737 if (!fmt) {
2738 snd_printk(KERN_ERR "%d:%u:%d : no FORMAT_TYPE desc\n",
2739 dev->devnum, iface_no, altno);
2740 continue;
2741 }
2742 if (fmt[0] < 8) {
2743 snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n",
2744 dev->devnum, iface_no, altno);
2745 continue;
2746 }
2747
2748 csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
2749 /* Creamware Noah has this descriptor after the 2nd endpoint */
2750 if (!csep && altsd->bNumEndpoints >= 2)
2751 csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
2752 if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) {
f8c75790 2753 snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
faf8d117 2754 " class specific endpoint descriptor\n",
1da177e4 2755 dev->devnum, iface_no, altno);
faf8d117 2756 csep = NULL;
1da177e4
LT		 2757 }
2758
59feddb2 2759 fp = kzalloc(sizeof(*fp), GFP_KERNEL);
1da177e4
LT		 2760 if (! fp) {
2761 snd_printk(KERN_ERR "cannot malloc\n");
2762 return -ENOMEM;
2763 }
2764
1da177e4
LT		 2765 fp->iface = iface_no;
2766 fp->altsetting = altno;
2767 fp->altset_idx = i;
2768 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
2769 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
1da177e4 2770 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
573567e0
CL		 2771 if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
2772 fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
2773 * (fp->maxpacksize & 0x7ff);
faf8d117 2774 fp->attributes = csep ? csep[3] : 0;
1da177e4
LT		 2775
2776 /* some quirks for attributes here */
2777
c3f93297
CL		 2778 switch (chip->usb_id) {
2779 case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
1da177e4
LT		 2780 /* Optoplay sets the sample rate attribute although
2781 * it seems not supporting it in fact.
2782 */
2783 fp->attributes &= ~EP_CS_ATTR_SAMPLE_RATE;
c3f93297
CL		 2784 break;
2785 case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
2786 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
1da177e4
LT		 2787 /* doesn't set the sample rate attribute, but supports it */
2788 fp->attributes |= EP_CS_ATTR_SAMPLE_RATE;
c3f93297
CL		 2789 break;
2790 case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
2791 case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
2792 an older model 77d:223) */
1da177e4
LT		 2793 /*
2794 * plantronics headset and Griffin iMic have set adaptive-in
2795 * although it's really not...
2796 */
1da177e4
LT		 2797 fp->ep_attr &= ~EP_ATTR_MASK;
2798 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
2799 fp->ep_attr |= EP_ATTR_ADAPTIVE;
2800 else
2801 fp->ep_attr |= EP_ATTR_SYNC;
c3f93297 2802 break;
1da177e4
LT		 2803 }
2804
2805 /* ok, let's parse further... */
27d10f56 2806 if (parse_audio_format(chip, fp, format, fmt, stream) < 0) {
1da177e4
LT		 2807 kfree(fp->rate_table);
2808 kfree(fp);
2809 continue;
2810 }
2811
e311334e 2812 snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint 0x%x\n", dev->devnum, iface_no, altno, fp->endpoint);
1da177e4
LT		 2813 err = add_audio_endpoint(chip, stream, fp);
2814 if (err < 0) {
2815 kfree(fp->rate_table);
2816 kfree(fp);
2817 return err;
2818 }
2819 /* try to set the interface... */
2820 usb_set_interface(chip->dev, iface_no, altno);
2821 init_usb_pitch(chip->dev, iface_no, alts, fp);
2822 init_usb_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max);
2823 }
2824 return 0;
2825}
2826
2827
2828/*
2829 * disconnect streams
2830 * called from snd_usb_audio_disconnect()
2831 */
ee733397 2832static void snd_usb_stream_disconnect(struct list_head *head)
1da177e4
LT		 2833{
2834 int idx;
86e07d34
TI		 2835 struct snd_usb_stream *as;
2836 struct snd_usb_substream *subs;
1da177e4 2837
86e07d34 2838 as = list_entry(head, struct snd_usb_stream, list);
1da177e4
LT		 2839 for (idx = 0; idx < 2; idx++) {
2840 subs = &as->substream[idx];
2841 if (!subs->num_formats)
2842 return;
2843 release_substream_urbs(subs, 1);
2844 subs->interface = -1;
2845 }
2846}
2847
2848/*
2849 * parse audio control descriptor and create pcm/midi streams
2850 */
86e07d34 2851static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
1da177e4
LT		 2852{
2853 struct usb_device *dev = chip->dev;
2854 struct usb_host_interface *host_iface;
2855 struct usb_interface *iface;
2856 unsigned char *p1;
2857 int i, j;
2858
2859 /* find audiocontrol interface */
2860 host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0];
2861 if (!(p1 = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen, NULL, HEADER))) {
2862 snd_printk(KERN_ERR "cannot find HEADER\n");
2863 return -EINVAL;
2864 }
2865 if (! p1[7] || p1[0] < 8 + p1[7]) {
2866 snd_printk(KERN_ERR "invalid HEADER\n");
2867 return -EINVAL;
2868 }
2869
2870 /*
2871 * parse all USB audio streaming interfaces
2872 */
2873 for (i = 0; i < p1[7]; i++) {
2874 struct usb_host_interface *alts;
2875 struct usb_interface_descriptor *altsd;
2876 j = p1[8 + i];
2877 iface = usb_ifnum_to_if(dev, j);
2878 if (!iface) {
2879 snd_printk(KERN_ERR "%d:%u:%d : does not exist\n",
2880 dev->devnum, ctrlif, j);
2881 continue;
2882 }
2883 if (usb_interface_claimed(iface)) {
2884 snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n", dev->devnum, ctrlif, j);
2885 continue;
2886 }
2887 alts = &iface->altsetting[0];
2888 altsd = get_iface_desc(alts);
2889 if ((altsd->bInterfaceClass == USB_CLASS_AUDIO ||
2890 altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) &&
2891 altsd->bInterfaceSubClass == USB_SUBCLASS_MIDI_STREAMING) {
2892 if (snd_usb_create_midi_interface(chip, iface, NULL) < 0) {
2893 snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n", dev->devnum, ctrlif, j);
2894 continue;
2895 }
2896 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
2897 continue;
2898 }
2899 if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
2900 altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
2901 altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING) {
2902 snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n", dev->devnum, ctrlif, j, altsd->bInterfaceClass);
2903 /* skip non-supported classes */
2904 continue;
2905 }
076639f6
CL		 2906 if (snd_usb_get_speed(dev) == USB_SPEED_LOW) {
2907 snd_printk(KERN_ERR "low speed audio streaming not supported\n");
2908 continue;
2909 }
1da177e4
LT		 2910 if (! parse_audio_endpoints(chip, j)) {
2911 usb_set_interface(dev, j, 0); /* reset the current interface */
2912 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
2913 }
2914 }
2915
2916 return 0;
2917}
2918
2919/*
2920 * create a stream for an endpoint/altsetting without proper descriptors
2921 */
86e07d34 2922static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
1da177e4 2923 struct usb_interface *iface,
86e07d34 2924 const struct snd_usb_audio_quirk *quirk)
1da177e4
LT		 2925{
2926 struct audioformat *fp;
2927 struct usb_host_interface *alts;
2928 int stream, err;
b4482a4b 2929 unsigned *rate_table = NULL;
1da177e4 2930
52978be6 2931 fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
1da177e4 2932 if (! fp) {
52978be6 2933 snd_printk(KERN_ERR "cannot memdup\n");
1da177e4
LT		 2934 return -ENOMEM;
2935 }
1da177e4
LT		 2936 if (fp->nr_rates > 0) {
2937 rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
2938 if (!rate_table) {
2939 kfree(fp);
2940 return -ENOMEM;
2941 }
2942 memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
2943 fp->rate_table = rate_table;
2944 }
2945
2946 stream = (fp->endpoint & USB_DIR_IN)
2947 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
2948 err = add_audio_endpoint(chip, stream, fp);
2949 if (err < 0) {
2950 kfree(fp);
2951 kfree(rate_table);
2952 return err;
2953 }
2954 if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
2955 fp->altset_idx >= iface->num_altsetting) {
2956 kfree(fp);
2957 kfree(rate_table);
2958 return -EINVAL;
2959 }
2960 alts = &iface->altsetting[fp->altset_idx];
2961 usb_set_interface(chip->dev, fp->iface, 0);
2962 init_usb_pitch(chip->dev, fp->iface, alts, fp);
2963 init_usb_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max);
2964 return 0;
2965}
2966
2967/*
2968 * create a stream for an interface with proper descriptors
2969 */
86e07d34 2970static int create_standard_audio_quirk(struct snd_usb_audio *chip,
d1bda045 2971 struct usb_interface *iface,
86e07d34 2972 const struct snd_usb_audio_quirk *quirk)
1da177e4
LT		 2973{
2974 struct usb_host_interface *alts;
2975 struct usb_interface_descriptor *altsd;
2976 int err;
2977
2978 alts = &iface->altsetting[0];
2979 altsd = get_iface_desc(alts);
d1bda045 2980 err = parse_audio_endpoints(chip, altsd->bInterfaceNumber);
1da177e4
LT		 2981 if (err < 0) {
2982 snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
2983 altsd->bInterfaceNumber, err);
2984 return err;
2985 }
d1bda045
CL		 2986 /* reset the current interface */
2987 usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
1da177e4
LT		 2988 return 0;
2989}
2990
2991/*
2992 * Create a stream for an Edirol UA-700/UA-25 interface. The only way
2993 * to detect the sample rate is by looking at wMaxPacketSize.
2994 */
86e07d34 2995static int create_ua700_ua25_quirk(struct snd_usb_audio *chip,
854af957 2996 struct usb_interface *iface,
86e07d34 2997 const struct snd_usb_audio_quirk *quirk)
1da177e4
LT		 2998{
2999 static const struct audioformat ua_format = {
3000 .format = SNDRV_PCM_FORMAT_S24_3LE,
3001 .channels = 2,
3002 .fmt_type = USB_FORMAT_TYPE_I,
3003 .altsetting = 1,
3004 .altset_idx = 1,
3005 .rates = SNDRV_PCM_RATE_CONTINUOUS,
3006 };
3007 struct usb_host_interface *alts;
3008 struct usb_interface_descriptor *altsd;
3009 struct audioformat *fp;
3010 int stream, err;
3011
3012 /* both PCM and MIDI interfaces have 2 altsettings */
3013 if (iface->num_altsetting != 2)
3014 return -ENXIO;
3015 alts = &iface->altsetting[1];
3016 altsd = get_iface_desc(alts);
3017
3018 if (altsd->bNumEndpoints == 2) {
86e07d34 3019 static const struct snd_usb_midi_endpoint_info ua700_ep = {
1da177e4
LT		 3020 .out_cables = 0x0003,
3021 .in_cables = 0x0003
3022 };
86e07d34 3023 static const struct snd_usb_audio_quirk ua700_quirk = {
1da177e4
LT		 3024 .type = QUIRK_MIDI_FIXED_ENDPOINT,
3025 .data = &ua700_ep
3026 };
86e07d34 3027 static const struct snd_usb_midi_endpoint_info ua25_ep = {
1da177e4
LT		 3028 .out_cables = 0x0001,
3029 .in_cables = 0x0001
3030 };
86e07d34 3031 static const struct snd_usb_audio_quirk ua25_quirk = {
1da177e4
LT		 3032 .type = QUIRK_MIDI_FIXED_ENDPOINT,
3033 .data = &ua25_ep
3034 };
27d10f56 3035 if (chip->usb_id == USB_ID(0x0582, 0x002b))
1da177e4
LT		 3036 return snd_usb_create_midi_interface(chip, iface,
3037 &ua700_quirk);
3038 else
3039 return snd_usb_create_midi_interface(chip, iface,
3040 &ua25_quirk);
3041 }
3042
3043 if (altsd->bNumEndpoints != 1)
3044 return -ENXIO;
3045
3046 fp = kmalloc(sizeof(*fp), GFP_KERNEL);
3047 if (!fp)
3048 return -ENOMEM;
3049 memcpy(fp, &ua_format, sizeof(*fp));
3050
3051 fp->iface = altsd->bInterfaceNumber;
3052 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
3053 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
3054 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
3055
3056 switch (fp->maxpacksize) {
3057 case 0x120:
3058 fp->rate_max = fp->rate_min = 44100;
3059 break;
3060 case 0x138:
3061 case 0x140:
3062 fp->rate_max = fp->rate_min = 48000;
3063 break;
3064 case 0x258:
3065 case 0x260:
3066 fp->rate_max = fp->rate_min = 96000;
3067 break;
3068 default:
3069 snd_printk(KERN_ERR "unknown sample rate\n");
3070 kfree(fp);
3071 return -ENXIO;
3072 }
3073
3074 stream = (fp->endpoint & USB_DIR_IN)
3075 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
3076 err = add_audio_endpoint(chip, stream, fp);
3077 if (err < 0) {
3078 kfree(fp);
3079 return err;
3080 }
3081 usb_set_interface(chip->dev, fp->iface, 0);
3082 return 0;
3083}
3084
3085/*
3086 * Create a stream for an Edirol UA-1000 interface.
3087 */
86e07d34 3088static int create_ua1000_quirk(struct snd_usb_audio *chip,
854af957 3089 struct usb_interface *iface,
86e07d34 3090 const struct snd_usb_audio_quirk *quirk)
1da177e4
LT		 3091{
3092 static const struct audioformat ua1000_format = {
3093 .format = SNDRV_PCM_FORMAT_S32_LE,
3094 .fmt_type = USB_FORMAT_TYPE_I,
3095 .altsetting = 1,
3096 .altset_idx = 1,
3097 .attributes = 0,
3098 .rates = SNDRV_PCM_RATE_CONTINUOUS,
3099 };
3100 struct usb_host_interface *alts;
3101 struct usb_interface_descriptor *altsd;
3102 struct audioformat *fp;
3103 int stream, err;
3104
3105 if (iface->num_altsetting != 2)
3106 return -ENXIO;
3107 alts = &iface->altsetting[1];
3108 altsd = get_iface_desc(alts);
c4a87ef4 3109 if (alts->extralen != 11 || alts->extra[1] != USB_DT_CS_INTERFACE ||
1da177e4
LT		 3110 altsd->bNumEndpoints != 1)
3111 return -ENXIO;
3112
52978be6 3113 fp = kmemdup(&ua1000_format, sizeof(*fp), GFP_KERNEL);
1da177e4
LT		 3114 if (!fp)
3115 return -ENOMEM;
1da177e4
LT		 3116
3117 fp->channels = alts->extra[4];
3118 fp->iface = altsd->bInterfaceNumber;
3119 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
3120 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
3121 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
3122 fp->rate_max = fp->rate_min = combine_triple(&alts->extra[8]);
3123
3124 stream = (fp->endpoint & USB_DIR_IN)
3125 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
3126 err = add_audio_endpoint(chip, stream, fp);
3127 if (err < 0) {
3128 kfree(fp);
3129 return err;
3130 }
3131 /* FIXME: playback must be synchronized to capture */
3132 usb_set_interface(chip->dev, fp->iface, 0);
3133 return 0;
3134}
3135
d0b0fac1
BF		 3136/*
3137 * Create a stream for an Edirol UA-101 interface.
3138 * Copy, paste and modify from Edirol UA-1000
3139 */
3140static int create_ua101_quirk(struct snd_usb_audio *chip,
3141 struct usb_interface *iface,
3142 const struct snd_usb_audio_quirk *quirk)
3143{
3144 static const struct audioformat ua101_format = {
3145 .format = SNDRV_PCM_FORMAT_S32_LE,
3146 .fmt_type = USB_FORMAT_TYPE_I,
3147 .altsetting = 1,
3148 .altset_idx = 1,
3149 .attributes = 0,
3150 .rates = SNDRV_PCM_RATE_CONTINUOUS,
3151 };
3152 struct usb_host_interface *alts;
3153 struct usb_interface_descriptor *altsd;
3154 struct audioformat *fp;
3155 int stream, err;
3156
3157 if (iface->num_altsetting != 2)
3158 return -ENXIO;
3159 alts = &iface->altsetting[1];
3160 altsd = get_iface_desc(alts);
3161 if (alts->extralen != 18 || alts->extra[1] != USB_DT_CS_INTERFACE ||
3162 altsd->bNumEndpoints != 1)
3163 return -ENXIO;
3164
3165 fp = kmemdup(&ua101_format, sizeof(*fp), GFP_KERNEL);
3166 if (!fp)
3167 return -ENOMEM;
3168
3169 fp->channels = alts->extra[11];
3170 fp->iface = altsd->bInterfaceNumber;
3171 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
3172 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
3173 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
3174 fp->rate_max = fp->rate_min = combine_triple(&alts->extra[15]);
3175
3176 stream = (fp->endpoint & USB_DIR_IN)
3177 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
3178 err = add_audio_endpoint(chip, stream, fp);
3179 if (err < 0) {
3180 kfree(fp);
3181 return err;
3182 }
3183 /* FIXME: playback must be synchronized to capture */
3184 usb_set_interface(chip->dev, fp->iface, 0);
3185 return 0;
3186}
3187
86e07d34 3188static int snd_usb_create_quirk(struct snd_usb_audio *chip,
1da177e4 3189 struct usb_interface *iface,
86e07d34 3190 const struct snd_usb_audio_quirk *quirk);
1da177e4
LT		 3191
3192/*
3193 * handle the quirks for the contained interfaces
3194 */
86e07d34 3195static int create_composite_quirk(struct snd_usb_audio *chip,
1da177e4 3196 struct usb_interface *iface,
86e07d34 3197 const struct snd_usb_audio_quirk *quirk)
1da177e4
LT		 3198{
3199 int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
3200 int err;
3201
3202 for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
3203 iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
3204 if (!iface)
3205 continue;
3206 if (quirk->ifnum != probed_ifnum &&
3207 usb_interface_claimed(iface))
3208 continue;
3209 err = snd_usb_create_quirk(chip, iface, quirk);
3210 if (err < 0)
3211 return err;
3212 if (quirk->ifnum != probed_ifnum)
3213 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
3214 }
3215 return 0;
3216}
3217
86e07d34 3218static int ignore_interface_quirk(struct snd_usb_audio *chip,
854af957 3219 struct usb_interface *iface,
86e07d34 3220 const struct snd_usb_audio_quirk *quirk)
854af957
CL		 3221{
3222 return 0;
3223}
3224
1da177e4
LT		 3225
3226/*
3227 * boot quirks
3228 */
3229
3230#define EXTIGY_FIRMWARE_SIZE_OLD 794
3231#define EXTIGY_FIRMWARE_SIZE_NEW 483
3232
3233static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
3234{
3235 struct usb_host_config *config = dev->actconfig;
3236 int err;
3237
3238 if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
3239 le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
3240 snd_printdd("sending Extigy boot sequence...\n");
3241 /* Send message to force it to reconnect with full interface. */
3242 err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
3243 0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
3244 if (err < 0) snd_printdd("error sending boot message: %d\n", err);
3245 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
3246 &dev->descriptor, sizeof(dev->descriptor));
3247 config = dev->actconfig;
3248 if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
3249 err = usb_reset_configuration(dev);
3250 if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
3251 snd_printdd("extigy_boot: new boot length = %d\n",
3252 le16_to_cpu(get_cfg_desc(config)->wTotalLength));
3253 return -ENODEV; /* quit this anyway */
3254 }
3255 return 0;
3256}
3257
3a2f0856
CL		 3258static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
3259{
3a2f0856
CL		 3260 u8 buf = 1;
3261
3262 snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
3263 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
3264 0, 0, &buf, 1, 1000);
3265 if (buf == 0) {
3266 snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
3267 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
3268 1, 2000, NULL, 0, 1000);
3269 return -ENODEV;
3270 }
3a2f0856
CL		 3271 return 0;
3272}
3273
e217e30c
SR		 3274/*
3275 * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
3276 * documented in the device's data sheet.
3277 */
3278static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
3279{
3280 u8 buf[4];
3281 buf[0] = 0x20;
3282 buf[1] = value & 0xff;
3283 buf[2] = (value >> 8) & 0xff;
3284 buf[3] = reg;
3285 return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
3286 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
3287 0, 0, &buf, 4, 1000);
3288}
3289
3290static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
3291{
3292 /*
3293 * Enable line-out driver mode, set headphone source to front
3294 * channels, enable stereo mic.
3295 */
3296 return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
3297}
3298
3299
e311334e
TLM		 3300/*
3301 * Setup quirks
3302 */
3303#define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
3304#define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
3305#define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
3306#define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
3307#define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
3308#define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
3309#define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
3310#define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
3311#define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
3312#define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
3313
3314static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
3315 int iface, int altno)
3316{
f8c78b82
TLM		 3317 /* Reset ALL ifaces to 0 altsetting.
3318 * Call it for every possible altsetting of every interface.
3319 */
3320 usb_set_interface(chip->dev, iface, 0);
3321
e311334e
TLM		 3322 if (device_setup[chip->index] & AUDIOPHILE_SET) {
3323 if ((device_setup[chip->index] & AUDIOPHILE_SET_DTS)
3324 && altno != 6)
3325 return 1; /* skip this altsetting */
3326 if ((device_setup[chip->index] & AUDIOPHILE_SET_96K)
3327 && altno != 1)
3328 return 1; /* skip this altsetting */
3329 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3330 AUDIOPHILE_SET_24B_48K_DI && altno != 2)
3331 return 1; /* skip this altsetting */
3332 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3333 AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3)
3334 return 1; /* skip this altsetting */
3335 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3336 AUDIOPHILE_SET_16B_48K_DI && altno != 4)
3337 return 1; /* skip this altsetting */
3338 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3339 AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5)
3340 return 1; /* skip this altsetting */
3341 }
3342 return 0; /* keep this altsetting */
3343}
1da177e4
LT		 3344
3345/*
3346 * audio-interface quirks
3347 *
3348 * returns zero if no standard audio/MIDI parsing is needed.
3349 * returns a postive value if standard audio/midi interfaces are parsed
3350 * after this.
3351 * returns a negative value at error.
3352 */
86e07d34 3353static int snd_usb_create_quirk(struct snd_usb_audio *chip,
1da177e4 3354 struct usb_interface *iface,
86e07d34 3355 const struct snd_usb_audio_quirk *quirk)
1da177e4 3356{
86e07d34
TI		 3357 typedef int (*quirk_func_t)(struct snd_usb_audio *, struct usb_interface *,
3358 const struct snd_usb_audio_quirk *);
854af957
CL		 3359 static const quirk_func_t quirk_funcs[] = {
3360 [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
3361 [QUIRK_COMPOSITE] = create_composite_quirk,
3362 [QUIRK_MIDI_STANDARD_INTERFACE] = snd_usb_create_midi_interface,
3363 [QUIRK_MIDI_FIXED_ENDPOINT] = snd_usb_create_midi_interface,
3364 [QUIRK_MIDI_YAMAHA] = snd_usb_create_midi_interface,
3365 [QUIRK_MIDI_MIDIMAN] = snd_usb_create_midi_interface,
3366 [QUIRK_MIDI_NOVATION] = snd_usb_create_midi_interface,
3367 [QUIRK_MIDI_RAW] = snd_usb_create_midi_interface,
3368 [QUIRK_MIDI_EMAGIC] = snd_usb_create_midi_interface,
cc7a59bd 3369 [QUIRK_MIDI_CME] = snd_usb_create_midi_interface,
d1bda045 3370 [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
854af957
CL		 3371 [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
3372 [QUIRK_AUDIO_EDIROL_UA700_UA25] = create_ua700_ua25_quirk,
3373 [QUIRK_AUDIO_EDIROL_UA1000] = create_ua1000_quirk,
d0b0fac1 3374 [QUIRK_AUDIO_EDIROL_UA101] = create_ua101_quirk,
854af957
CL		 3375 };
3376
3377 if (quirk->type < QUIRK_TYPE_COUNT) {
3378 return quirk_funcs[quirk->type](chip, iface, quirk);
3379 } else {
1da177e4
LT		 3380 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
3381 return -ENXIO;
3382 }
3383}
3384
3385
3386/*
3387 * common proc files to show the usb device info
3388 */
86e07d34 3389static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1da177e4 3390{
86e07d34 3391 struct snd_usb_audio *chip = entry->private_data;
07f51a72 3392 if (!chip->shutdown)
1da177e4
LT		 3393 snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
3394}
3395
86e07d34 3396static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1da177e4 3397{
86e07d34 3398 struct snd_usb_audio *chip = entry->private_data;
07f51a72 3399 if (!chip->shutdown)
1da177e4 3400 snd_iprintf(buffer, "%04x:%04x\n",
27d10f56
CL		 3401 USB_ID_VENDOR(chip->usb_id),
3402 USB_ID_PRODUCT(chip->usb_id));
1da177e4
LT		 3403}
3404
86e07d34 3405static void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
1da177e4 3406{
86e07d34 3407 struct snd_info_entry *entry;
07f51a72 3408 if (!snd_card_proc_new(chip->card, "usbbus", &entry))
bf850204 3409 snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read);
07f51a72 3410 if (!snd_card_proc_new(chip->card, "usbid", &entry))
bf850204 3411 snd_info_set_text_ops(entry, chip, proc_audio_usbid_read);
1da177e4
LT		 3412}
3413
3414/*
3415 * free the chip instance
3416 *
3417 * here we have to do not much, since pcm and controls are already freed
3418 *
3419 */
3420
86e07d34 3421static int snd_usb_audio_free(struct snd_usb_audio *chip)
1da177e4
LT		 3422{
3423 kfree(chip);
3424 return 0;
3425}
3426
86e07d34 3427static int snd_usb_audio_dev_free(struct snd_device *device)
1da177e4 3428{
86e07d34 3429 struct snd_usb_audio *chip = device->device_data;
1da177e4
LT		 3430 return snd_usb_audio_free(chip);
3431}
3432
3433
3434/*
3435 * create a chip instance and set its names.
3436 */
3437static int snd_usb_audio_create(struct usb_device *dev, int idx,
86e07d34
TI		 3438 const struct snd_usb_audio_quirk *quirk,
3439 struct snd_usb_audio **rchip)
1da177e4 3440{
86e07d34
TI		 3441 struct snd_card *card;
3442 struct snd_usb_audio *chip;
1da177e4
LT		 3443 int err, len;
3444 char component[14];
86e07d34 3445 static struct snd_device_ops ops = {
1da177e4
LT		 3446 .dev_free = snd_usb_audio_dev_free,
3447 };
3448
3449 *rchip = NULL;
3450
076639f6
CL		 3451 if (snd_usb_get_speed(dev) != USB_SPEED_LOW &&
3452 snd_usb_get_speed(dev) != USB_SPEED_FULL &&
1da177e4
LT		 3453 snd_usb_get_speed(dev) != USB_SPEED_HIGH) {
3454 snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev));
3455 return -ENXIO;
3456 }
3457
3458 card = snd_card_new(index[idx], id[idx], THIS_MODULE, 0);
3459 if (card == NULL) {
3460 snd_printk(KERN_ERR "cannot create card instance %d\n", idx);
3461 return -ENOMEM;
3462 }
3463
561b220a 3464 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1da177e4
LT		 3465 if (! chip) {
3466 snd_card_free(card);
3467 return -ENOMEM;
3468 }
3469
3470 chip->index = idx;
3471 chip->dev = dev;
3472 chip->card = card;
27d10f56
CL		 3473 chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
3474 le16_to_cpu(dev->descriptor.idProduct));
1da177e4
LT		 3475 INIT_LIST_HEAD(&chip->pcm_list);
3476 INIT_LIST_HEAD(&chip->midi_list);
84957a8a 3477 INIT_LIST_HEAD(&chip->mixer_list);
1da177e4
LT		 3478
3479 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
3480 snd_usb_audio_free(chip);
3481 snd_card_free(card);
3482 return err;
3483 }
3484
3485 strcpy(card->driver, "USB-Audio");
3486 sprintf(component, "USB%04x:%04x",
27d10f56 3487 USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id));
1da177e4
LT		 3488 snd_component_add(card, component);
3489
3490 /* retrieve the device string as shortname */
3491 if (quirk && quirk->product_name) {
3492 strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname));
3493 } else {
3494 if (!dev->descriptor.iProduct ||
3495 usb_string(dev, dev->descriptor.iProduct,
3496 card->shortname, sizeof(card->shortname)) <= 0) {
3497 /* no name available from anywhere, so use ID */
3498 sprintf(card->shortname, "USB Device %#04x:%#04x",
27d10f56
CL		 3499 USB_ID_VENDOR(chip->usb_id),
3500 USB_ID_PRODUCT(chip->usb_id));
1da177e4
LT		 3501 }
3502 }
3503
3504 /* retrieve the vendor and device strings as longname */
3505 if (quirk && quirk->vendor_name) {
3506 len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname));
3507 } else {
3508 if (dev->descriptor.iManufacturer)
3509 len = usb_string(dev, dev->descriptor.iManufacturer,
3510 card->longname, sizeof(card->longname));
3511 else
3512 len = 0;
3513 /* we don't really care if there isn't any vendor string */
3514 }
3515 if (len > 0)
3516 strlcat(card->longname, " ", sizeof(card->longname));
3517
3518 strlcat(card->longname, card->shortname, sizeof(card->longname));
3519
3520 len = strlcat(card->longname, " at ", sizeof(card->longname));
3521
3522 if (len < sizeof(card->longname))
3523 usb_make_path(dev, card->longname + len, sizeof(card->longname) - len);
3524
3525 strlcat(card->longname,
076639f6
CL		 3526 snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" :
3527 snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" :
3528 ", high speed",
1da177e4
LT		 3529 sizeof(card->longname));
3530
3531 snd_usb_audio_create_proc(chip);
3532
1da177e4
LT		 3533 *rchip = chip;
3534 return 0;
3535}
3536
3537
3538/*
3539 * probe the active usb device
3540 *
3541 * note that this can be called multiple times per a device, when it
3542 * includes multiple audio control interfaces.
3543 *
3544 * thus we check the usb device pointer and creates the card instance
3545 * only at the first time. the successive calls of this function will
3546 * append the pcm interface to the corresponding card.
3547 */
3548static void *snd_usb_audio_probe(struct usb_device *dev,
3549 struct usb_interface *intf,
3550 const struct usb_device_id *usb_id)
3551{
86e07d34 3552 const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info;
1da177e4 3553 int i, err;
86e07d34 3554 struct snd_usb_audio *chip;
1da177e4
LT		 3555 struct usb_host_interface *alts;
3556 int ifnum;
27d10f56 3557 u32 id;
1da177e4
LT		 3558
3559 alts = &intf->altsetting[0];
3560 ifnum = get_iface_desc(alts)->bInterfaceNumber;
27d10f56
CL		 3561 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
3562 le16_to_cpu(dev->descriptor.idProduct));
1da177e4
LT		 3563
3564 if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum)
3565 goto __err_val;
3566
3567 /* SB Extigy needs special boot-up sequence */
3568 /* if more models come, this will go to the quirk list. */
27d10f56 3569 if (id == USB_ID(0x041e, 0x3000)) {
1da177e4
LT		 3570 if (snd_usb_extigy_boot_quirk(dev, intf) < 0)
3571 goto __err_val;
1da177e4 3572 }
3a2f0856
CL		 3573 /* SB Audigy 2 NX needs its own boot-up magic, too */
3574 if (id == USB_ID(0x041e, 0x3020)) {
3575 if (snd_usb_audigy2nx_boot_quirk(dev) < 0)
3576 goto __err_val;
3577 }
1da177e4 3578
e217e30c
SR		 3579 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
3580 if (id == USB_ID(0x10f5, 0x0200)) {
3581 if (snd_usb_cm106_boot_quirk(dev) < 0)
3582 goto __err_val;
3583 }
3584
1da177e4
LT		 3585 /*
3586 * found a config. now register to ALSA
3587 */
3588
3589 /* check whether it's already registered */
3590 chip = NULL;
12aa7579 3591 mutex_lock(&register_mutex);
1da177e4
LT		 3592 for (i = 0; i < SNDRV_CARDS; i++) {
3593 if (usb_chip[i] && usb_chip[i]->dev == dev) {
3594 if (usb_chip[i]->shutdown) {
3595 snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n");
3596 goto __error;
3597 }
3598 chip = usb_chip[i];
3599 break;
3600 }
3601 }
3602 if (! chip) {
3603 /* it's a fresh one.
3604 * now look for an empty slot and create a new card instance
3605 */
1da177e4
LT		 3606 for (i = 0; i < SNDRV_CARDS; i++)
3607 if (enable[i] && ! usb_chip[i] &&
27d10f56
CL		 3608 (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) &&
3609 (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) {
1da177e4
LT		 3610 if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) {
3611 goto __error;
3612 }
1dcd3ec4 3613 snd_card_set_dev(chip->card, &intf->dev);
1da177e4
LT		 3614 break;
3615 }
07f51a72
PM		 3616 if (!chip) {
3617 printk(KERN_ERR "no available usb audio device\n");
1da177e4
LT		 3618 goto __error;
3619 }
3620 }
3621
3622 err = 1; /* continue */
3623 if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) {
3624 /* need some special handlings */
3625 if ((err = snd_usb_create_quirk(chip, intf, quirk)) < 0)
3626 goto __error;
3627 }
3628
3629 if (err > 0) {
3630 /* create normal USB audio interfaces */
3631 if (snd_usb_create_streams(chip, ifnum) < 0 ||
3632 snd_usb_create_mixer(chip, ifnum) < 0) {
3633 goto __error;
3634 }
3635 }
3636
3637 /* we are allowed to call snd_card_register() many times */
3638 if (snd_card_register(chip->card) < 0) {
3639 goto __error;
3640 }
3641
3642 usb_chip[chip->index] = chip;
3643 chip->num_interfaces++;
12aa7579 3644 mutex_unlock(&register_mutex);
1da177e4
LT		 3645 return chip;
3646
3647 __error:
3648 if (chip && !chip->num_interfaces)
3649 snd_card_free(chip->card);
12aa7579 3650 mutex_unlock(&register_mutex);
1da177e4
LT		 3651 __err_val:
3652 return NULL;
3653}
3654
3655/*
3656 * we need to take care of counter, since disconnection can be called also
3657 * many times as well as usb_audio_probe().
3658 */
3659static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr)
3660{
86e07d34
TI		 3661 struct snd_usb_audio *chip;
3662 struct snd_card *card;
1da177e4
LT		 3663 struct list_head *p;
3664
3665 if (ptr == (void *)-1L)
3666 return;
3667
3668 chip = ptr;
3669 card = chip->card;
12aa7579 3670 mutex_lock(&register_mutex);
1da177e4
LT		 3671 chip->shutdown = 1;
3672 chip->num_interfaces--;
3673 if (chip->num_interfaces <= 0) {
3674 snd_card_disconnect(card);
3675 /* release the pcm resources */
3676 list_for_each(p, &chip->pcm_list) {
ee733397 3677 snd_usb_stream_disconnect(p);
1da177e4
LT		 3678 }
3679 /* release the midi resources */
3680 list_for_each(p, &chip->midi_list) {
ee733397 3681 snd_usbmidi_disconnect(p);
1da177e4 3682 }
84957a8a
CL		 3683 /* release mixer resources */
3684 list_for_each(p, &chip->mixer_list) {
3685 snd_usb_mixer_disconnect(p);
3686 }
9eb70e68 3687 usb_chip[chip->index] = NULL;
12aa7579 3688 mutex_unlock(&register_mutex);
c461482c 3689 snd_card_free_when_closed(card);
1da177e4 3690 } else {
12aa7579 3691 mutex_unlock(&register_mutex);
1da177e4
LT		 3692 }
3693}
3694
3695/*
3696 * new 2.5 USB kernel API
3697 */
3698static int usb_audio_probe(struct usb_interface *intf,
3699 const struct usb_device_id *id)
3700{
3701 void *chip;
3702 chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id);
3703 if (chip) {
3704 dev_set_drvdata(&intf->dev, chip);
3705 return 0;
3706 } else
3707 return -EIO;
3708}
3709
3710static void usb_audio_disconnect(struct usb_interface *intf)
3711{
3712 snd_usb_audio_disconnect(interface_to_usbdev(intf),
3713 dev_get_drvdata(&intf->dev));
3714}
3715
93521d27 3716#ifdef CONFIG_PM
f85bf29c
ON		 3717static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
3718{
3719 struct snd_usb_audio *chip = dev_get_drvdata(&intf->dev);
3720 struct list_head *p;
3721 struct snd_usb_stream *as;
3722
3723 if (chip == (void *)-1L)
3724 return 0;
3725
3726 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
3727 if (!chip->num_suspended_intf++) {
3728 list_for_each(p, &chip->pcm_list) {
3729 as = list_entry(p, struct snd_usb_stream, list);
3730 snd_pcm_suspend_all(as->pcm);
3731 }
3732 }
3733
3734 return 0;
3735}
3736
3737static int usb_audio_resume(struct usb_interface *intf)
3738{
3739 struct snd_usb_audio *chip = dev_get_drvdata(&intf->dev);
3740
3741 if (chip == (void *)-1L)
3742 return 0;
3743 if (--chip->num_suspended_intf)
3744 return 0;
3745 /*
3746 * ALSA leaves material resumption to user space
3747 * we just notify
3748 */
3749
3750 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
3751
3752 return 0;
3753}
93521d27 3754#endif /* CONFIG_PM */
1da177e4
LT		 3755
3756static int __init snd_usb_audio_init(void)
3757{
3758 if (nrpacks < MIN_PACKS_URB || nrpacks > MAX_PACKS) {
3759 printk(KERN_WARNING "invalid nrpacks value.\n");
3760 return -EINVAL;
3761 }
cf78bbc4 3762 return usb_register(&usb_audio_driver);
1da177e4
LT		 3763}
3764
3765
3766static void __exit snd_usb_audio_cleanup(void)
3767{
3768 usb_deregister(&usb_audio_driver);
3769}
3770
3771module_init(snd_usb_audio_init);
3772module_exit(snd_usb_audio_cleanup);
Linux kernel - Deliverables
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