2 * (Tentative) USB Audio Driver for ALSA
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
8 * Many codes borrowed from audio.c by
9 * Alan Cox (alan@lxorguk.ukuu.org.uk)
10 * Thomas Sailer (sailer@ife.ee.ethz.ch)
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.
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.
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
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).
41 #include <sound/driver.h>
42 #include <linux/bitops.h>
43 #include <linux/init.h>
44 #include <linux/list.h>
45 #include <linux/slab.h>
46 #include <linux/string.h>
47 #include <linux/usb.h>
48 #include <linux/vmalloc.h>
49 #include <linux/moduleparam.h>
50 #include <linux/mutex.h>
51 #include <sound/core.h>
52 #include <sound/info.h>
53 #include <sound/pcm.h>
54 #include <sound/pcm_params.h>
55 #include <sound/initval.h>
60 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
61 MODULE_DESCRIPTION("USB Audio");
62 MODULE_LICENSE("GPL");
63 MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
66 static int index
[SNDRV_CARDS
] = SNDRV_DEFAULT_IDX
; /* Index 0-MAX */
67 static char *id
[SNDRV_CARDS
] = SNDRV_DEFAULT_STR
; /* ID for this card */
68 static int enable
[SNDRV_CARDS
] = SNDRV_DEFAULT_ENABLE_PNP
; /* Enable this card */
69 static int vid
[SNDRV_CARDS
] = { [0 ... (SNDRV_CARDS
-1)] = -1 }; /* Vendor ID for this card */
70 static int pid
[SNDRV_CARDS
] = { [0 ... (SNDRV_CARDS
-1)] = -1 }; /* Product ID for this card */
71 static int nrpacks
= 8; /* max. number of packets per urb */
72 static int async_unlink
= 1;
73 static int device_setup
[SNDRV_CARDS
]; /* device parameter for this card*/
75 module_param_array(index
, int, NULL
, 0444);
76 MODULE_PARM_DESC(index
, "Index value for the USB audio adapter.");
77 module_param_array(id
, charp
, NULL
, 0444);
78 MODULE_PARM_DESC(id
, "ID string for the USB audio adapter.");
79 module_param_array(enable
, bool, NULL
, 0444);
80 MODULE_PARM_DESC(enable
, "Enable USB audio adapter.");
81 module_param_array(vid
, int, NULL
, 0444);
82 MODULE_PARM_DESC(vid
, "Vendor ID for the USB audio device.");
83 module_param_array(pid
, int, NULL
, 0444);
84 MODULE_PARM_DESC(pid
, "Product ID for the USB audio device.");
85 module_param(nrpacks
, int, 0644);
86 MODULE_PARM_DESC(nrpacks
, "Max. number of packets per URB.");
87 module_param(async_unlink
, bool, 0444);
88 MODULE_PARM_DESC(async_unlink
, "Use async unlink mode.");
89 module_param_array(device_setup
, int, NULL
, 0444);
90 MODULE_PARM_DESC(device_setup
, "Specific device setup (if needed).");
94 * debug the h/w constraints
96 /* #define HW_CONST_DEBUG */
104 #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
106 #define SYNC_URBS 4 /* always four urbs for sync */
107 #define MIN_PACKS_URB 1 /* minimum 1 packet per urb */
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 unsigned int needs_knot
; /* any unusual rates? */
129 struct snd_usb_substream
;
133 unsigned int buffer_size
; /* size of data buffer, if data URB */
134 struct snd_usb_substream
*subs
;
135 int index
; /* index for urb array */
136 int packets
; /* number of packets per urb */
140 int (*prepare
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
141 int (*retire
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
142 int (*prepare_sync
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
143 int (*retire_sync
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
146 struct snd_usb_substream
{
147 struct snd_usb_stream
*stream
;
148 struct usb_device
*dev
;
149 struct snd_pcm_substream
*pcm_substream
;
150 int direction
; /* playback or capture */
151 int interface
; /* current interface */
152 int endpoint
; /* assigned endpoint */
153 struct audioformat
*cur_audiofmt
; /* current audioformat pointer (for hw_params callback) */
154 unsigned int cur_rate
; /* current rate (for hw_params callback) */
155 unsigned int period_bytes
; /* current period bytes (for hw_params callback) */
156 unsigned int format
; /* USB data format */
157 unsigned int datapipe
; /* the data i/o pipe */
158 unsigned int syncpipe
; /* 1 - async out or adaptive in */
159 unsigned int datainterval
; /* log_2 of data packet interval */
160 unsigned int syncinterval
; /* P for adaptive mode, 0 otherwise */
161 unsigned int freqn
; /* nominal sampling rate in fs/fps in Q16.16 format */
162 unsigned int freqm
; /* momentary sampling rate in fs/fps in Q16.16 format */
163 unsigned int freqmax
; /* maximum sampling rate, used for buffer management */
164 unsigned int phase
; /* phase accumulator */
165 unsigned int maxpacksize
; /* max packet size in bytes */
166 unsigned int maxframesize
; /* max packet size in frames */
167 unsigned int curpacksize
; /* current packet size in bytes (for capture) */
168 unsigned int curframesize
; /* current packet size in frames (for capture) */
169 unsigned int fill_max
: 1; /* fill max packet size always */
170 unsigned int fmt_type
; /* USB audio format type (1-3) */
171 unsigned int packs_per_ms
; /* packets per millisecond (for playback) */
173 unsigned int running
: 1; /* running status */
175 unsigned int hwptr_done
; /* processed frame position in the buffer */
176 unsigned int transfer_done
; /* processed frames since last period update */
177 unsigned long active_mask
; /* bitmask of active urbs */
178 unsigned long unlink_mask
; /* bitmask of unlinked urbs */
180 unsigned int nurbs
; /* # urbs */
181 struct snd_urb_ctx dataurb
[MAX_URBS
]; /* data urb table */
182 struct snd_urb_ctx syncurb
[SYNC_URBS
]; /* sync urb table */
183 char *syncbuf
; /* sync buffer for all sync URBs */
184 dma_addr_t sync_dma
; /* DMA address of syncbuf */
186 u64 formats
; /* format bitmasks (all or'ed) */
187 unsigned int num_formats
; /* number of supported audio formats (list) */
188 struct list_head fmt_list
; /* format list */
189 struct snd_pcm_hw_constraint_list rate_list
; /* limited rates */
192 struct snd_urb_ops ops
; /* callbacks (must be filled at init) */
196 struct snd_usb_stream
{
197 struct snd_usb_audio
*chip
;
200 unsigned int fmt_type
; /* USB audio format type (1-3) */
201 struct snd_usb_substream substream
[2];
202 struct list_head list
;
207 * we keep the snd_usb_audio_t instances by ourselves for merging
208 * the all interfaces on the same card as one sound device.
211 static DEFINE_MUTEX(register_mutex
);
212 static struct snd_usb_audio
*usb_chip
[SNDRV_CARDS
];
216 * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
217 * this will overflow at approx 524 kHz
219 static inline unsigned get_usb_full_speed_rate(unsigned int rate
)
221 return ((rate
<< 13) + 62) / 125;
225 * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
226 * this will overflow at approx 4 MHz
228 static inline unsigned get_usb_high_speed_rate(unsigned int rate
)
230 return ((rate
<< 10) + 62) / 125;
233 /* convert our full speed USB rate into sampling rate in Hz */
234 static inline unsigned get_full_speed_hz(unsigned int usb_rate
)
236 return (usb_rate
* 125 + (1 << 12)) >> 13;
239 /* convert our high speed USB rate into sampling rate in Hz */
240 static inline unsigned get_high_speed_hz(unsigned int usb_rate
)
242 return (usb_rate
* 125 + (1 << 9)) >> 10;
247 * prepare urb for full speed capture sync pipe
249 * fill the length and offset of each urb descriptor.
250 * the fixed 10.14 frequency is passed through the pipe.
252 static int prepare_capture_sync_urb(struct snd_usb_substream
*subs
,
253 struct snd_pcm_runtime
*runtime
,
256 unsigned char *cp
= urb
->transfer_buffer
;
257 struct snd_urb_ctx
*ctx
= urb
->context
;
259 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
260 urb
->iso_frame_desc
[0].length
= 3;
261 urb
->iso_frame_desc
[0].offset
= 0;
262 cp
[0] = subs
->freqn
>> 2;
263 cp
[1] = subs
->freqn
>> 10;
264 cp
[2] = subs
->freqn
>> 18;
269 * prepare urb for high speed capture sync pipe
271 * fill the length and offset of each urb descriptor.
272 * the fixed 12.13 frequency is passed as 16.16 through the pipe.
274 static int prepare_capture_sync_urb_hs(struct snd_usb_substream
*subs
,
275 struct snd_pcm_runtime
*runtime
,
278 unsigned char *cp
= urb
->transfer_buffer
;
279 struct snd_urb_ctx
*ctx
= urb
->context
;
281 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
282 urb
->iso_frame_desc
[0].length
= 4;
283 urb
->iso_frame_desc
[0].offset
= 0;
285 cp
[1] = subs
->freqn
>> 8;
286 cp
[2] = subs
->freqn
>> 16;
287 cp
[3] = subs
->freqn
>> 24;
292 * process after capture sync complete
295 static int retire_capture_sync_urb(struct snd_usb_substream
*subs
,
296 struct snd_pcm_runtime
*runtime
,
303 * prepare urb for capture data pipe
305 * fill the offset and length of each descriptor.
307 * we use a temporary buffer to write the captured data.
308 * since the length of written data is determined by host, we cannot
309 * write onto the pcm buffer directly... the data is thus copied
310 * later at complete callback to the global buffer.
312 static int prepare_capture_urb(struct snd_usb_substream
*subs
,
313 struct snd_pcm_runtime
*runtime
,
317 struct snd_urb_ctx
*ctx
= urb
->context
;
320 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
321 for (i
= 0; i
< ctx
->packets
; i
++) {
322 urb
->iso_frame_desc
[i
].offset
= offs
;
323 urb
->iso_frame_desc
[i
].length
= subs
->curpacksize
;
324 offs
+= subs
->curpacksize
;
326 urb
->transfer_buffer_length
= offs
;
327 urb
->number_of_packets
= ctx
->packets
;
332 * process after capture complete
334 * copy the data from each desctiptor to the pcm buffer, and
335 * update the current position.
337 static int retire_capture_urb(struct snd_usb_substream
*subs
,
338 struct snd_pcm_runtime
*runtime
,
344 unsigned int stride
, len
, oldptr
;
345 int period_elapsed
= 0;
347 stride
= runtime
->frame_bits
>> 3;
349 for (i
= 0; i
< urb
->number_of_packets
; i
++) {
350 cp
= (unsigned char *)urb
->transfer_buffer
+ urb
->iso_frame_desc
[i
].offset
;
351 if (urb
->iso_frame_desc
[i
].status
) {
352 snd_printd(KERN_ERR
"frame %d active: %d\n", i
, urb
->iso_frame_desc
[i
].status
);
355 len
= urb
->iso_frame_desc
[i
].actual_length
/ stride
;
358 /* update the current pointer */
359 spin_lock_irqsave(&subs
->lock
, flags
);
360 oldptr
= subs
->hwptr_done
;
361 subs
->hwptr_done
+= len
;
362 if (subs
->hwptr_done
>= runtime
->buffer_size
)
363 subs
->hwptr_done
-= runtime
->buffer_size
;
364 subs
->transfer_done
+= len
;
365 if (subs
->transfer_done
>= runtime
->period_size
) {
366 subs
->transfer_done
-= runtime
->period_size
;
369 spin_unlock_irqrestore(&subs
->lock
, flags
);
370 /* copy a data chunk */
371 if (oldptr
+ len
> runtime
->buffer_size
) {
372 unsigned int cnt
= runtime
->buffer_size
- oldptr
;
373 unsigned int blen
= cnt
* stride
;
374 memcpy(runtime
->dma_area
+ oldptr
* stride
, cp
, blen
);
375 memcpy(runtime
->dma_area
, cp
+ blen
, len
* stride
- blen
);
377 memcpy(runtime
->dma_area
+ oldptr
* stride
, cp
, len
* stride
);
381 snd_pcm_period_elapsed(subs
->pcm_substream
);
386 * Process after capture complete when paused. Nothing to do.
388 static int retire_paused_capture_urb(struct snd_usb_substream
*subs
,
389 struct snd_pcm_runtime
*runtime
,
397 * prepare urb for full speed playback sync pipe
399 * set up the offset and length to receive the current frequency.
402 static int prepare_playback_sync_urb(struct snd_usb_substream
*subs
,
403 struct snd_pcm_runtime
*runtime
,
406 struct snd_urb_ctx
*ctx
= urb
->context
;
408 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
409 urb
->iso_frame_desc
[0].length
= 3;
410 urb
->iso_frame_desc
[0].offset
= 0;
415 * prepare urb for high speed playback sync pipe
417 * set up the offset and length to receive the current frequency.
420 static int prepare_playback_sync_urb_hs(struct snd_usb_substream
*subs
,
421 struct snd_pcm_runtime
*runtime
,
424 struct snd_urb_ctx
*ctx
= urb
->context
;
426 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
427 urb
->iso_frame_desc
[0].length
= 4;
428 urb
->iso_frame_desc
[0].offset
= 0;
433 * process after full speed playback sync complete
435 * retrieve the current 10.14 frequency from pipe, and set it.
436 * the value is referred in prepare_playback_urb().
438 static int retire_playback_sync_urb(struct snd_usb_substream
*subs
,
439 struct snd_pcm_runtime
*runtime
,
445 if (urb
->iso_frame_desc
[0].status
== 0 &&
446 urb
->iso_frame_desc
[0].actual_length
== 3) {
447 f
= combine_triple((u8
*)urb
->transfer_buffer
) << 2;
448 if (f
>= subs
->freqn
- subs
->freqn
/ 8 && f
<= subs
->freqmax
) {
449 spin_lock_irqsave(&subs
->lock
, flags
);
451 spin_unlock_irqrestore(&subs
->lock
, flags
);
459 * process after high speed playback sync complete
461 * retrieve the current 12.13 frequency from pipe, and set it.
462 * the value is referred in prepare_playback_urb().
464 static int retire_playback_sync_urb_hs(struct snd_usb_substream
*subs
,
465 struct snd_pcm_runtime
*runtime
,
471 if (urb
->iso_frame_desc
[0].status
== 0 &&
472 urb
->iso_frame_desc
[0].actual_length
== 4) {
473 f
= combine_quad((u8
*)urb
->transfer_buffer
) & 0x0fffffff;
474 if (f
>= subs
->freqn
- subs
->freqn
/ 8 && f
<= subs
->freqmax
) {
475 spin_lock_irqsave(&subs
->lock
, flags
);
477 spin_unlock_irqrestore(&subs
->lock
, flags
);
484 /* determine the number of frames in the next packet */
485 static int snd_usb_audio_next_packet_size(struct snd_usb_substream
*subs
)
488 return subs
->maxframesize
;
490 subs
->phase
= (subs
->phase
& 0xffff)
491 + (subs
->freqm
<< subs
->datainterval
);
492 return min(subs
->phase
>> 16, subs
->maxframesize
);
497 * Prepare urb for streaming before playback starts or when paused.
499 * We don't have any data, so we send a frame of silence.
501 static int prepare_nodata_playback_urb(struct snd_usb_substream
*subs
,
502 struct snd_pcm_runtime
*runtime
,
505 unsigned int i
, offs
, counts
;
506 struct snd_urb_ctx
*ctx
= urb
->context
;
507 int stride
= runtime
->frame_bits
>> 3;
510 urb
->dev
= ctx
->subs
->dev
;
511 urb
->number_of_packets
= subs
->packs_per_ms
;
512 for (i
= 0; i
< subs
->packs_per_ms
; ++i
) {
513 counts
= snd_usb_audio_next_packet_size(subs
);
514 urb
->iso_frame_desc
[i
].offset
= offs
* stride
;
515 urb
->iso_frame_desc
[i
].length
= counts
* stride
;
518 urb
->transfer_buffer_length
= offs
* stride
;
519 memset(urb
->transfer_buffer
,
520 subs
->cur_audiofmt
->format
== SNDRV_PCM_FORMAT_U8
? 0x80 : 0,
526 * prepare urb for playback data pipe
528 * Since a URB can handle only a single linear buffer, we must use double
529 * buffering when the data to be transferred overflows the buffer boundary.
530 * To avoid inconsistencies when updating hwptr_done, we use double buffering
533 static int prepare_playback_urb(struct snd_usb_substream
*subs
,
534 struct snd_pcm_runtime
*runtime
,
540 int period_elapsed
= 0;
541 struct snd_urb_ctx
*ctx
= urb
->context
;
543 stride
= runtime
->frame_bits
>> 3;
546 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
547 urb
->number_of_packets
= 0;
548 spin_lock_irqsave(&subs
->lock
, flags
);
549 for (i
= 0; i
< ctx
->packets
; i
++) {
550 counts
= snd_usb_audio_next_packet_size(subs
);
551 /* set up descriptor */
552 urb
->iso_frame_desc
[i
].offset
= offs
* stride
;
553 urb
->iso_frame_desc
[i
].length
= counts
* stride
;
555 urb
->number_of_packets
++;
556 subs
->transfer_done
+= counts
;
557 if (subs
->transfer_done
>= runtime
->period_size
) {
558 subs
->transfer_done
-= runtime
->period_size
;
560 if (subs
->fmt_type
== USB_FORMAT_TYPE_II
) {
561 if (subs
->transfer_done
> 0) {
562 /* FIXME: fill-max mode is not
564 offs
-= subs
->transfer_done
;
565 counts
-= subs
->transfer_done
;
566 urb
->iso_frame_desc
[i
].length
=
568 subs
->transfer_done
= 0;
571 if (i
< ctx
->packets
) {
572 /* add a transfer delimiter */
573 urb
->iso_frame_desc
[i
].offset
=
575 urb
->iso_frame_desc
[i
].length
= 0;
576 urb
->number_of_packets
++;
581 /* finish at the frame boundary at/after the period boundary */
582 if (period_elapsed
&&
583 (i
& (subs
->packs_per_ms
- 1)) == subs
->packs_per_ms
- 1)
586 if (subs
->hwptr_done
+ offs
> runtime
->buffer_size
) {
587 /* err, the transferred area goes over buffer boundary. */
588 unsigned int len
= runtime
->buffer_size
- subs
->hwptr_done
;
589 memcpy(urb
->transfer_buffer
,
590 runtime
->dma_area
+ subs
->hwptr_done
* stride
,
592 memcpy(urb
->transfer_buffer
+ len
* stride
,
594 (offs
- len
) * stride
);
596 memcpy(urb
->transfer_buffer
,
597 runtime
->dma_area
+ subs
->hwptr_done
* stride
,
600 subs
->hwptr_done
+= offs
;
601 if (subs
->hwptr_done
>= runtime
->buffer_size
)
602 subs
->hwptr_done
-= runtime
->buffer_size
;
603 spin_unlock_irqrestore(&subs
->lock
, flags
);
604 urb
->transfer_buffer_length
= offs
* stride
;
606 snd_pcm_period_elapsed(subs
->pcm_substream
);
611 * process after playback data complete
614 static int retire_playback_urb(struct snd_usb_substream
*subs
,
615 struct snd_pcm_runtime
*runtime
,
624 static struct snd_urb_ops audio_urb_ops
[2] = {
626 .prepare
= prepare_nodata_playback_urb
,
627 .retire
= retire_playback_urb
,
628 .prepare_sync
= prepare_playback_sync_urb
,
629 .retire_sync
= retire_playback_sync_urb
,
632 .prepare
= prepare_capture_urb
,
633 .retire
= retire_capture_urb
,
634 .prepare_sync
= prepare_capture_sync_urb
,
635 .retire_sync
= retire_capture_sync_urb
,
639 static struct snd_urb_ops audio_urb_ops_high_speed
[2] = {
641 .prepare
= prepare_nodata_playback_urb
,
642 .retire
= retire_playback_urb
,
643 .prepare_sync
= prepare_playback_sync_urb_hs
,
644 .retire_sync
= retire_playback_sync_urb_hs
,
647 .prepare
= prepare_capture_urb
,
648 .retire
= retire_capture_urb
,
649 .prepare_sync
= prepare_capture_sync_urb_hs
,
650 .retire_sync
= retire_capture_sync_urb
,
655 * complete callback from data urb
657 static void snd_complete_urb(struct urb
*urb
)
659 struct snd_urb_ctx
*ctx
= urb
->context
;
660 struct snd_usb_substream
*subs
= ctx
->subs
;
661 struct snd_pcm_substream
*substream
= ctx
->subs
->pcm_substream
;
664 if ((subs
->running
&& subs
->ops
.retire(subs
, substream
->runtime
, urb
)) ||
665 ! subs
->running
|| /* can be stopped during retire callback */
666 (err
= subs
->ops
.prepare(subs
, substream
->runtime
, urb
)) < 0 ||
667 (err
= usb_submit_urb(urb
, GFP_ATOMIC
)) < 0) {
668 clear_bit(ctx
->index
, &subs
->active_mask
);
670 snd_printd(KERN_ERR
"cannot submit urb (err = %d)\n", err
);
671 snd_pcm_stop(substream
, SNDRV_PCM_STATE_XRUN
);
678 * complete callback from sync urb
680 static void snd_complete_sync_urb(struct urb
*urb
)
682 struct snd_urb_ctx
*ctx
= urb
->context
;
683 struct snd_usb_substream
*subs
= ctx
->subs
;
684 struct snd_pcm_substream
*substream
= ctx
->subs
->pcm_substream
;
687 if ((subs
->running
&& subs
->ops
.retire_sync(subs
, substream
->runtime
, urb
)) ||
688 ! subs
->running
|| /* can be stopped during retire callback */
689 (err
= subs
->ops
.prepare_sync(subs
, substream
->runtime
, urb
)) < 0 ||
690 (err
= usb_submit_urb(urb
, GFP_ATOMIC
)) < 0) {
691 clear_bit(ctx
->index
+ 16, &subs
->active_mask
);
693 snd_printd(KERN_ERR
"cannot submit sync urb (err = %d)\n", err
);
694 snd_pcm_stop(substream
, SNDRV_PCM_STATE_XRUN
);
700 /* get the physical page pointer at the given offset */
701 static struct page
*snd_pcm_get_vmalloc_page(struct snd_pcm_substream
*subs
,
702 unsigned long offset
)
704 void *pageptr
= subs
->runtime
->dma_area
+ offset
;
705 return vmalloc_to_page(pageptr
);
708 /* allocate virtual buffer; may be called more than once */
709 static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream
*subs
, size_t size
)
711 struct snd_pcm_runtime
*runtime
= subs
->runtime
;
712 if (runtime
->dma_area
) {
713 if (runtime
->dma_bytes
>= size
)
714 return 0; /* already large enough */
715 vfree(runtime
->dma_area
);
717 runtime
->dma_area
= vmalloc(size
);
718 if (! runtime
->dma_area
)
720 runtime
->dma_bytes
= size
;
724 /* free virtual buffer; may be called more than once */
725 static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream
*subs
)
727 struct snd_pcm_runtime
*runtime
= subs
->runtime
;
729 vfree(runtime
->dma_area
);
730 runtime
->dma_area
= NULL
;
736 * unlink active urbs.
738 static int deactivate_urbs(struct snd_usb_substream
*subs
, int force
, int can_sleep
)
745 if (!force
&& subs
->stream
->chip
->shutdown
) /* to be sure... */
748 async
= !can_sleep
&& async_unlink
;
750 if (! async
&& in_interrupt())
753 for (i
= 0; i
< subs
->nurbs
; i
++) {
754 if (test_bit(i
, &subs
->active_mask
)) {
755 if (! test_and_set_bit(i
, &subs
->unlink_mask
)) {
756 struct urb
*u
= subs
->dataurb
[i
].urb
;
764 if (subs
->syncpipe
) {
765 for (i
= 0; i
< SYNC_URBS
; i
++) {
766 if (test_bit(i
+16, &subs
->active_mask
)) {
767 if (! test_and_set_bit(i
+16, &subs
->unlink_mask
)) {
768 struct urb
*u
= subs
->syncurb
[i
].urb
;
781 static const char *usb_error_string(int err
)
787 return "endpoint not enabled";
789 return "endpoint stalled";
791 return "not enough bandwidth";
793 return "device disabled";
795 return "device suspended";
796 #ifndef CONFIG_USB_EHCI_SPLIT_ISO
798 return "enable CONFIG_USB_EHCI_SPLIT_ISO to play through a hub";
804 return "internal error";
806 return "unknown error";
811 * set up and start data/sync urbs
813 static int start_urbs(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
)
818 if (subs
->stream
->chip
->shutdown
)
821 for (i
= 0; i
< subs
->nurbs
; i
++) {
822 snd_assert(subs
->dataurb
[i
].urb
, return -EINVAL
);
823 if (subs
->ops
.prepare(subs
, runtime
, subs
->dataurb
[i
].urb
) < 0) {
824 snd_printk(KERN_ERR
"cannot prepare datapipe for urb %d\n", i
);
828 if (subs
->syncpipe
) {
829 for (i
= 0; i
< SYNC_URBS
; i
++) {
830 snd_assert(subs
->syncurb
[i
].urb
, return -EINVAL
);
831 if (subs
->ops
.prepare_sync(subs
, runtime
, subs
->syncurb
[i
].urb
) < 0) {
832 snd_printk(KERN_ERR
"cannot prepare syncpipe for urb %d\n", i
);
838 subs
->active_mask
= 0;
839 subs
->unlink_mask
= 0;
841 for (i
= 0; i
< subs
->nurbs
; i
++) {
842 err
= usb_submit_urb(subs
->dataurb
[i
].urb
, GFP_ATOMIC
);
844 snd_printk(KERN_ERR
"cannot submit datapipe "
845 "for urb %d, error %d: %s\n",
846 i
, err
, usb_error_string(err
));
849 set_bit(i
, &subs
->active_mask
);
851 if (subs
->syncpipe
) {
852 for (i
= 0; i
< SYNC_URBS
; i
++) {
853 err
= usb_submit_urb(subs
->syncurb
[i
].urb
, GFP_ATOMIC
);
855 snd_printk(KERN_ERR
"cannot submit syncpipe "
856 "for urb %d, error %d: %s\n",
857 i
, err
, usb_error_string(err
));
860 set_bit(i
+ 16, &subs
->active_mask
);
866 // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
867 deactivate_urbs(subs
, 0, 0);
873 * wait until all urbs are processed.
875 static int wait_clear_urbs(struct snd_usb_substream
*subs
)
877 unsigned long end_time
= jiffies
+ msecs_to_jiffies(1000);
883 for (i
= 0; i
< subs
->nurbs
; i
++) {
884 if (test_bit(i
, &subs
->active_mask
))
887 if (subs
->syncpipe
) {
888 for (i
= 0; i
< SYNC_URBS
; i
++) {
889 if (test_bit(i
+ 16, &subs
->active_mask
))
895 schedule_timeout_uninterruptible(1);
896 } while (time_before(jiffies
, end_time
));
898 snd_printk(KERN_ERR
"timeout: still %d active urbs..\n", alive
);
904 * return the current pcm pointer. just return the hwptr_done value.
906 static snd_pcm_uframes_t
snd_usb_pcm_pointer(struct snd_pcm_substream
*substream
)
908 struct snd_usb_substream
*subs
;
909 snd_pcm_uframes_t hwptr_done
;
911 subs
= (struct snd_usb_substream
*)substream
->runtime
->private_data
;
912 spin_lock(&subs
->lock
);
913 hwptr_done
= subs
->hwptr_done
;
914 spin_unlock(&subs
->lock
);
920 * start/stop playback substream
922 static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream
*substream
,
925 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
928 case SNDRV_PCM_TRIGGER_START
:
929 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
930 subs
->ops
.prepare
= prepare_playback_urb
;
932 case SNDRV_PCM_TRIGGER_STOP
:
933 return deactivate_urbs(subs
, 0, 0);
934 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
935 subs
->ops
.prepare
= prepare_nodata_playback_urb
;
943 * start/stop capture substream
945 static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream
*substream
,
948 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
951 case SNDRV_PCM_TRIGGER_START
:
952 subs
->ops
.retire
= retire_capture_urb
;
953 return start_urbs(subs
, substream
->runtime
);
954 case SNDRV_PCM_TRIGGER_STOP
:
955 return deactivate_urbs(subs
, 0, 0);
956 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
957 subs
->ops
.retire
= retire_paused_capture_urb
;
959 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
960 subs
->ops
.retire
= retire_capture_urb
;
971 static void release_urb_ctx(struct snd_urb_ctx
*u
)
975 usb_buffer_free(u
->subs
->dev
, u
->buffer_size
,
976 u
->urb
->transfer_buffer
,
977 u
->urb
->transfer_dma
);
978 usb_free_urb(u
->urb
);
984 * release a substream
986 static void release_substream_urbs(struct snd_usb_substream
*subs
, int force
)
990 /* stop urbs (to be sure) */
991 deactivate_urbs(subs
, force
, 1);
992 wait_clear_urbs(subs
);
994 for (i
= 0; i
< MAX_URBS
; i
++)
995 release_urb_ctx(&subs
->dataurb
[i
]);
996 for (i
= 0; i
< SYNC_URBS
; i
++)
997 release_urb_ctx(&subs
->syncurb
[i
]);
998 usb_buffer_free(subs
->dev
, SYNC_URBS
* 4,
999 subs
->syncbuf
, subs
->sync_dma
);
1000 subs
->syncbuf
= NULL
;
1005 * initialize a substream for plaback/capture
1007 static int init_substream_urbs(struct snd_usb_substream
*subs
, unsigned int period_bytes
,
1008 unsigned int rate
, unsigned int frame_bits
)
1010 unsigned int maxsize
, n
, i
;
1011 int is_playback
= subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
;
1012 unsigned int npacks
[MAX_URBS
], urb_packs
, total_packs
, packs_per_ms
;
1014 /* calculate the frequency in 16.16 format */
1015 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
1016 subs
->freqn
= get_usb_full_speed_rate(rate
);
1018 subs
->freqn
= get_usb_high_speed_rate(rate
);
1019 subs
->freqm
= subs
->freqn
;
1020 /* calculate max. frequency */
1021 if (subs
->maxpacksize
) {
1022 /* whatever fits into a max. size packet */
1023 maxsize
= subs
->maxpacksize
;
1024 subs
->freqmax
= (maxsize
/ (frame_bits
>> 3))
1025 << (16 - subs
->datainterval
);
1027 /* no max. packet size: just take 25% higher than nominal */
1028 subs
->freqmax
= subs
->freqn
+ (subs
->freqn
>> 2);
1029 maxsize
= ((subs
->freqmax
+ 0xffff) * (frame_bits
>> 3))
1030 >> (16 - subs
->datainterval
);
1035 subs
->curpacksize
= subs
->maxpacksize
;
1037 subs
->curpacksize
= maxsize
;
1039 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_HIGH
)
1040 packs_per_ms
= 8 >> subs
->datainterval
;
1043 subs
->packs_per_ms
= packs_per_ms
;
1046 urb_packs
= nrpacks
;
1047 urb_packs
= max(urb_packs
, (unsigned int)MIN_PACKS_URB
);
1048 urb_packs
= min(urb_packs
, (unsigned int)MAX_PACKS
);
1051 urb_packs
*= packs_per_ms
;
1053 /* decide how many packets to be used */
1055 unsigned int minsize
;
1056 /* determine how small a packet can be */
1057 minsize
= (subs
->freqn
>> (16 - subs
->datainterval
))
1058 * (frame_bits
>> 3);
1059 /* with sync from device, assume it can be 12% lower */
1061 minsize
-= minsize
>> 3;
1062 minsize
= max(minsize
, 1u);
1063 total_packs
= (period_bytes
+ minsize
- 1) / minsize
;
1064 /* round up to multiple of packs_per_ms */
1065 total_packs
= (total_packs
+ packs_per_ms
- 1)
1066 & ~(packs_per_ms
- 1);
1067 /* we need at least two URBs for queueing */
1068 if (total_packs
< 2 * MIN_PACKS_URB
* packs_per_ms
)
1069 total_packs
= 2 * MIN_PACKS_URB
* packs_per_ms
;
1071 total_packs
= MAX_URBS
* urb_packs
;
1073 subs
->nurbs
= (total_packs
+ urb_packs
- 1) / urb_packs
;
1074 if (subs
->nurbs
> MAX_URBS
) {
1076 subs
->nurbs
= MAX_URBS
;
1077 total_packs
= MAX_URBS
* urb_packs
;
1080 for (i
= 0; i
< subs
->nurbs
; i
++) {
1081 npacks
[i
] = n
> urb_packs
? urb_packs
: n
;
1084 if (subs
->nurbs
<= 1) {
1085 /* too little - we need at least two packets
1086 * to ensure contiguous playback/capture
1089 npacks
[0] = (total_packs
+ 1) / 2;
1090 npacks
[1] = total_packs
- npacks
[0];
1091 } else if (npacks
[subs
->nurbs
-1] < MIN_PACKS_URB
* packs_per_ms
) {
1092 /* the last packet is too small.. */
1093 if (subs
->nurbs
> 2) {
1094 /* merge to the first one */
1095 npacks
[0] += npacks
[subs
->nurbs
- 1];
1100 npacks
[0] = (total_packs
+ 1) / 2;
1101 npacks
[1] = total_packs
- npacks
[0];
1105 /* allocate and initialize data urbs */
1106 for (i
= 0; i
< subs
->nurbs
; i
++) {
1107 struct snd_urb_ctx
*u
= &subs
->dataurb
[i
];
1110 u
->packets
= npacks
[i
];
1111 u
->buffer_size
= maxsize
* u
->packets
;
1112 if (subs
->fmt_type
== USB_FORMAT_TYPE_II
)
1113 u
->packets
++; /* for transfer delimiter */
1114 u
->urb
= usb_alloc_urb(u
->packets
, GFP_KERNEL
);
1117 u
->urb
->transfer_buffer
=
1118 usb_buffer_alloc(subs
->dev
, u
->buffer_size
, GFP_KERNEL
,
1119 &u
->urb
->transfer_dma
);
1120 if (! u
->urb
->transfer_buffer
)
1122 u
->urb
->pipe
= subs
->datapipe
;
1123 u
->urb
->transfer_flags
= URB_ISO_ASAP
| URB_NO_TRANSFER_DMA_MAP
;
1124 u
->urb
->interval
= 1 << subs
->datainterval
;
1125 u
->urb
->context
= u
;
1126 u
->urb
->complete
= snd_complete_urb
;
1129 if (subs
->syncpipe
) {
1130 /* allocate and initialize sync urbs */
1131 subs
->syncbuf
= usb_buffer_alloc(subs
->dev
, SYNC_URBS
* 4,
1132 GFP_KERNEL
, &subs
->sync_dma
);
1133 if (! subs
->syncbuf
)
1135 for (i
= 0; i
< SYNC_URBS
; i
++) {
1136 struct snd_urb_ctx
*u
= &subs
->syncurb
[i
];
1140 u
->urb
= usb_alloc_urb(1, GFP_KERNEL
);
1143 u
->urb
->transfer_buffer
= subs
->syncbuf
+ i
* 4;
1144 u
->urb
->transfer_dma
= subs
->sync_dma
+ i
* 4;
1145 u
->urb
->transfer_buffer_length
= 4;
1146 u
->urb
->pipe
= subs
->syncpipe
;
1147 u
->urb
->transfer_flags
= URB_ISO_ASAP
|
1148 URB_NO_TRANSFER_DMA_MAP
;
1149 u
->urb
->number_of_packets
= 1;
1150 u
->urb
->interval
= 1 << subs
->syncinterval
;
1151 u
->urb
->context
= u
;
1152 u
->urb
->complete
= snd_complete_sync_urb
;
1158 release_substream_urbs(subs
, 0);
1164 * find a matching audio format
1166 static struct audioformat
*find_format(struct snd_usb_substream
*subs
, unsigned int format
,
1167 unsigned int rate
, unsigned int channels
)
1169 struct list_head
*p
;
1170 struct audioformat
*found
= NULL
;
1171 int cur_attr
= 0, attr
;
1173 list_for_each(p
, &subs
->fmt_list
) {
1174 struct audioformat
*fp
;
1175 fp
= list_entry(p
, struct audioformat
, list
);
1176 if (fp
->format
!= format
|| fp
->channels
!= channels
)
1178 if (rate
< fp
->rate_min
|| rate
> fp
->rate_max
)
1180 if (! (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)) {
1182 for (i
= 0; i
< fp
->nr_rates
; i
++)
1183 if (fp
->rate_table
[i
] == rate
)
1185 if (i
>= fp
->nr_rates
)
1188 attr
= fp
->ep_attr
& EP_ATTR_MASK
;
1194 /* avoid async out and adaptive in if the other method
1195 * supports the same format.
1196 * this is a workaround for the case like
1197 * M-audio audiophile USB.
1199 if (attr
!= cur_attr
) {
1200 if ((attr
== EP_ATTR_ASYNC
&&
1201 subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) ||
1202 (attr
== EP_ATTR_ADAPTIVE
&&
1203 subs
->direction
== SNDRV_PCM_STREAM_CAPTURE
))
1205 if ((cur_attr
== EP_ATTR_ASYNC
&&
1206 subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) ||
1207 (cur_attr
== EP_ATTR_ADAPTIVE
&&
1208 subs
->direction
== SNDRV_PCM_STREAM_CAPTURE
)) {
1214 /* find the format with the largest max. packet size */
1215 if (fp
->maxpacksize
> found
->maxpacksize
) {
1225 * initialize the picth control and sample rate
1227 static int init_usb_pitch(struct usb_device
*dev
, int iface
,
1228 struct usb_host_interface
*alts
,
1229 struct audioformat
*fmt
)
1232 unsigned char data
[1];
1235 ep
= get_endpoint(alts
, 0)->bEndpointAddress
;
1236 /* if endpoint has pitch control, enable it */
1237 if (fmt
->attributes
& EP_CS_ATTR_PITCH_CONTROL
) {
1239 if ((err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), SET_CUR
,
1240 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_OUT
,
1241 PITCH_CONTROL
<< 8, ep
, data
, 1, 1000)) < 0) {
1242 snd_printk(KERN_ERR
"%d:%d:%d: cannot set enable PITCH\n",
1243 dev
->devnum
, iface
, ep
);
1250 static int init_usb_sample_rate(struct usb_device
*dev
, int iface
,
1251 struct usb_host_interface
*alts
,
1252 struct audioformat
*fmt
, int rate
)
1255 unsigned char data
[3];
1258 ep
= get_endpoint(alts
, 0)->bEndpointAddress
;
1259 /* if endpoint has sampling rate control, set it */
1260 if (fmt
->attributes
& EP_CS_ATTR_SAMPLE_RATE
) {
1263 data
[1] = rate
>> 8;
1264 data
[2] = rate
>> 16;
1265 if ((err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), SET_CUR
,
1266 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_OUT
,
1267 SAMPLING_FREQ_CONTROL
<< 8, ep
, data
, 3, 1000)) < 0) {
1268 snd_printk(KERN_ERR
"%d:%d:%d: cannot set freq %d to ep 0x%x\n",
1269 dev
->devnum
, iface
, fmt
->altsetting
, rate
, ep
);
1272 if ((err
= snd_usb_ctl_msg(dev
, usb_rcvctrlpipe(dev
, 0), GET_CUR
,
1273 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_IN
,
1274 SAMPLING_FREQ_CONTROL
<< 8, ep
, data
, 3, 1000)) < 0) {
1275 snd_printk(KERN_WARNING
"%d:%d:%d: cannot get freq at ep 0x%x\n",
1276 dev
->devnum
, iface
, fmt
->altsetting
, ep
);
1277 return 0; /* some devices don't support reading */
1279 crate
= data
[0] | (data
[1] << 8) | (data
[2] << 16);
1280 if (crate
!= rate
) {
1281 snd_printd(KERN_WARNING
"current rate %d is different from the runtime rate %d\n", crate
, rate
);
1282 // runtime->rate = crate;
1289 * find a matching format and set up the interface
1291 static int set_format(struct snd_usb_substream
*subs
, struct audioformat
*fmt
)
1293 struct usb_device
*dev
= subs
->dev
;
1294 struct usb_host_interface
*alts
;
1295 struct usb_interface_descriptor
*altsd
;
1296 struct usb_interface
*iface
;
1297 unsigned int ep
, attr
;
1298 int is_playback
= subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
;
1301 iface
= usb_ifnum_to_if(dev
, fmt
->iface
);
1302 snd_assert(iface
, return -EINVAL
);
1303 alts
= &iface
->altsetting
[fmt
->altset_idx
];
1304 altsd
= get_iface_desc(alts
);
1305 snd_assert(altsd
->bAlternateSetting
== fmt
->altsetting
, return -EINVAL
);
1307 if (fmt
== subs
->cur_audiofmt
)
1310 /* close the old interface */
1311 if (subs
->interface
>= 0 && subs
->interface
!= fmt
->iface
) {
1312 usb_set_interface(subs
->dev
, subs
->interface
, 0);
1313 subs
->interface
= -1;
1318 if (subs
->interface
!= fmt
->iface
|| subs
->format
!= fmt
->altset_idx
) {
1319 if (usb_set_interface(dev
, fmt
->iface
, fmt
->altsetting
) < 0) {
1320 snd_printk(KERN_ERR
"%d:%d:%d: usb_set_interface failed\n",
1321 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1324 snd_printdd(KERN_INFO
"setting usb interface %d:%d\n", fmt
->iface
, fmt
->altsetting
);
1325 subs
->interface
= fmt
->iface
;
1326 subs
->format
= fmt
->altset_idx
;
1329 /* create a data pipe */
1330 ep
= fmt
->endpoint
& USB_ENDPOINT_NUMBER_MASK
;
1332 subs
->datapipe
= usb_sndisocpipe(dev
, ep
);
1334 subs
->datapipe
= usb_rcvisocpipe(dev
, ep
);
1335 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_HIGH
&&
1336 get_endpoint(alts
, 0)->bInterval
>= 1 &&
1337 get_endpoint(alts
, 0)->bInterval
<= 4)
1338 subs
->datainterval
= get_endpoint(alts
, 0)->bInterval
- 1;
1340 subs
->datainterval
= 0;
1341 subs
->syncpipe
= subs
->syncinterval
= 0;
1342 subs
->maxpacksize
= fmt
->maxpacksize
;
1345 /* we need a sync pipe in async OUT or adaptive IN mode */
1346 /* check the number of EP, since some devices have broken
1347 * descriptors which fool us. if it has only one EP,
1348 * assume it as adaptive-out or sync-in.
1350 attr
= fmt
->ep_attr
& EP_ATTR_MASK
;
1351 if (((is_playback
&& attr
== EP_ATTR_ASYNC
) ||
1352 (! is_playback
&& attr
== EP_ATTR_ADAPTIVE
)) &&
1353 altsd
->bNumEndpoints
>= 2) {
1354 /* check sync-pipe endpoint */
1355 /* ... and check descriptor size before accessing bSynchAddress
1356 because there is a version of the SB Audigy 2 NX firmware lacking
1357 the audio fields in the endpoint descriptors */
1358 if ((get_endpoint(alts
, 1)->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) != 0x01 ||
1359 (get_endpoint(alts
, 1)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1360 get_endpoint(alts
, 1)->bSynchAddress
!= 0)) {
1361 snd_printk(KERN_ERR
"%d:%d:%d : invalid synch pipe\n",
1362 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1365 ep
= get_endpoint(alts
, 1)->bEndpointAddress
;
1366 if (get_endpoint(alts
, 0)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1367 (( is_playback
&& ep
!= (unsigned int)(get_endpoint(alts
, 0)->bSynchAddress
| USB_DIR_IN
)) ||
1368 (!is_playback
&& ep
!= (unsigned int)(get_endpoint(alts
, 0)->bSynchAddress
& ~USB_DIR_IN
)))) {
1369 snd_printk(KERN_ERR
"%d:%d:%d : invalid synch pipe\n",
1370 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1373 ep
&= USB_ENDPOINT_NUMBER_MASK
;
1375 subs
->syncpipe
= usb_rcvisocpipe(dev
, ep
);
1377 subs
->syncpipe
= usb_sndisocpipe(dev
, ep
);
1378 if (get_endpoint(alts
, 1)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1379 get_endpoint(alts
, 1)->bRefresh
>= 1 &&
1380 get_endpoint(alts
, 1)->bRefresh
<= 9)
1381 subs
->syncinterval
= get_endpoint(alts
, 1)->bRefresh
;
1382 else if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
1383 subs
->syncinterval
= 1;
1384 else if (get_endpoint(alts
, 1)->bInterval
>= 1 &&
1385 get_endpoint(alts
, 1)->bInterval
<= 16)
1386 subs
->syncinterval
= get_endpoint(alts
, 1)->bInterval
- 1;
1388 subs
->syncinterval
= 3;
1391 /* always fill max packet size */
1392 if (fmt
->attributes
& EP_CS_ATTR_FILL_MAX
)
1395 if ((err
= init_usb_pitch(dev
, subs
->interface
, alts
, fmt
)) < 0)
1398 subs
->cur_audiofmt
= fmt
;
1401 printk("setting done: format = %d, rate = %d, channels = %d\n",
1402 fmt
->format
, fmt
->rate
, fmt
->channels
);
1403 printk(" datapipe = 0x%0x, syncpipe = 0x%0x\n",
1404 subs
->datapipe
, subs
->syncpipe
);
1411 * hw_params callback
1413 * allocate a buffer and set the given audio format.
1415 * so far we use a physically linear buffer although packetize transfer
1416 * doesn't need a continuous area.
1417 * if sg buffer is supported on the later version of alsa, we'll follow
1420 static int snd_usb_hw_params(struct snd_pcm_substream
*substream
,
1421 struct snd_pcm_hw_params
*hw_params
)
1423 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
1424 struct audioformat
*fmt
;
1425 unsigned int channels
, rate
, format
;
1428 ret
= snd_pcm_alloc_vmalloc_buffer(substream
,
1429 params_buffer_bytes(hw_params
));
1433 format
= params_format(hw_params
);
1434 rate
= params_rate(hw_params
);
1435 channels
= params_channels(hw_params
);
1436 fmt
= find_format(subs
, format
, rate
, channels
);
1438 snd_printd(KERN_DEBUG
"cannot set format: format = 0x%x, rate = %d, channels = %d\n",
1439 format
, rate
, channels
);
1443 changed
= subs
->cur_audiofmt
!= fmt
||
1444 subs
->period_bytes
!= params_period_bytes(hw_params
) ||
1445 subs
->cur_rate
!= rate
;
1446 if ((ret
= set_format(subs
, fmt
)) < 0)
1449 if (subs
->cur_rate
!= rate
) {
1450 struct usb_host_interface
*alts
;
1451 struct usb_interface
*iface
;
1452 iface
= usb_ifnum_to_if(subs
->dev
, fmt
->iface
);
1453 alts
= &iface
->altsetting
[fmt
->altset_idx
];
1454 ret
= init_usb_sample_rate(subs
->dev
, subs
->interface
, alts
, fmt
, rate
);
1457 subs
->cur_rate
= rate
;
1461 /* format changed */
1462 release_substream_urbs(subs
, 0);
1463 /* influenced: period_bytes, channels, rate, format, */
1464 ret
= init_substream_urbs(subs
, params_period_bytes(hw_params
),
1465 params_rate(hw_params
),
1466 snd_pcm_format_physical_width(params_format(hw_params
)) * params_channels(hw_params
));
1475 * reset the audio format and release the buffer
1477 static int snd_usb_hw_free(struct snd_pcm_substream
*substream
)
1479 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
1481 subs
->cur_audiofmt
= NULL
;
1483 subs
->period_bytes
= 0;
1484 if (!subs
->stream
->chip
->shutdown
)
1485 release_substream_urbs(subs
, 0);
1486 return snd_pcm_free_vmalloc_buffer(substream
);
1492 * only a few subtle things...
1494 static int snd_usb_pcm_prepare(struct snd_pcm_substream
*substream
)
1496 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1497 struct snd_usb_substream
*subs
= runtime
->private_data
;
1499 if (! subs
->cur_audiofmt
) {
1500 snd_printk(KERN_ERR
"usbaudio: no format is specified!\n");
1504 /* some unit conversions in runtime */
1505 subs
->maxframesize
= bytes_to_frames(runtime
, subs
->maxpacksize
);
1506 subs
->curframesize
= bytes_to_frames(runtime
, subs
->curpacksize
);
1508 /* reset the pointer */
1509 subs
->hwptr_done
= 0;
1510 subs
->transfer_done
= 0;
1513 /* clear urbs (to be sure) */
1514 deactivate_urbs(subs
, 0, 1);
1515 wait_clear_urbs(subs
);
1517 /* for playback, submit the URBs now; otherwise, the first hwptr_done
1518 * updates for all URBs would happen at the same time when starting */
1519 if (subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) {
1520 subs
->ops
.prepare
= prepare_nodata_playback_urb
;
1521 return start_urbs(subs
, runtime
);
1526 static struct snd_pcm_hardware snd_usb_hardware
=
1528 .info
= SNDRV_PCM_INFO_MMAP
|
1529 SNDRV_PCM_INFO_MMAP_VALID
|
1530 SNDRV_PCM_INFO_BATCH
|
1531 SNDRV_PCM_INFO_INTERLEAVED
|
1532 SNDRV_PCM_INFO_BLOCK_TRANSFER
|
1533 SNDRV_PCM_INFO_PAUSE
,
1534 .buffer_bytes_max
= 1024 * 1024,
1535 .period_bytes_min
= 64,
1536 .period_bytes_max
= 512 * 1024,
1538 .periods_max
= 1024,
1545 #ifdef HW_CONST_DEBUG
1546 #define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
1548 #define hwc_debug(fmt, args...) /**/
1551 static int hw_check_valid_format(struct snd_pcm_hw_params
*params
, struct audioformat
*fp
)
1553 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
);
1554 struct snd_interval
*ct
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
1555 struct snd_mask
*fmts
= hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
);
1557 /* check the format */
1558 if (! snd_mask_test(fmts
, fp
->format
)) {
1559 hwc_debug(" > check: no supported format %d\n", fp
->format
);
1562 /* check the channels */
1563 if (fp
->channels
< ct
->min
|| fp
->channels
> ct
->max
) {
1564 hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp
->channels
, ct
->min
, ct
->max
);
1567 /* check the rate is within the range */
1568 if (fp
->rate_min
> it
->max
|| (fp
->rate_min
== it
->max
&& it
->openmax
)) {
1569 hwc_debug(" > check: rate_min %d > max %d\n", fp
->rate_min
, it
->max
);
1572 if (fp
->rate_max
< it
->min
|| (fp
->rate_max
== it
->min
&& it
->openmin
)) {
1573 hwc_debug(" > check: rate_max %d < min %d\n", fp
->rate_max
, it
->min
);
1579 static int hw_rule_rate(struct snd_pcm_hw_params
*params
,
1580 struct snd_pcm_hw_rule
*rule
)
1582 struct snd_usb_substream
*subs
= rule
->private;
1583 struct list_head
*p
;
1584 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
);
1585 unsigned int rmin
, rmax
;
1588 hwc_debug("hw_rule_rate: (%d,%d)\n", it
->min
, it
->max
);
1591 list_for_each(p
, &subs
->fmt_list
) {
1592 struct audioformat
*fp
;
1593 fp
= list_entry(p
, struct audioformat
, list
);
1594 if (! hw_check_valid_format(params
, fp
))
1597 if (rmin
> fp
->rate_min
)
1598 rmin
= fp
->rate_min
;
1599 if (rmax
< fp
->rate_max
)
1600 rmax
= fp
->rate_max
;
1602 rmin
= fp
->rate_min
;
1603 rmax
= fp
->rate_max
;
1608 hwc_debug(" --> get empty\n");
1614 if (it
->min
< rmin
) {
1619 if (it
->max
> rmax
) {
1624 if (snd_interval_checkempty(it
)) {
1628 hwc_debug(" --> (%d, %d) (changed = %d)\n", it
->min
, it
->max
, changed
);
1633 static int hw_rule_channels(struct snd_pcm_hw_params
*params
,
1634 struct snd_pcm_hw_rule
*rule
)
1636 struct snd_usb_substream
*subs
= rule
->private;
1637 struct list_head
*p
;
1638 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
1639 unsigned int rmin
, rmax
;
1642 hwc_debug("hw_rule_channels: (%d,%d)\n", it
->min
, it
->max
);
1645 list_for_each(p
, &subs
->fmt_list
) {
1646 struct audioformat
*fp
;
1647 fp
= list_entry(p
, struct audioformat
, list
);
1648 if (! hw_check_valid_format(params
, fp
))
1651 if (rmin
> fp
->channels
)
1652 rmin
= fp
->channels
;
1653 if (rmax
< fp
->channels
)
1654 rmax
= fp
->channels
;
1656 rmin
= fp
->channels
;
1657 rmax
= fp
->channels
;
1662 hwc_debug(" --> get empty\n");
1668 if (it
->min
< rmin
) {
1673 if (it
->max
> rmax
) {
1678 if (snd_interval_checkempty(it
)) {
1682 hwc_debug(" --> (%d, %d) (changed = %d)\n", it
->min
, it
->max
, changed
);
1686 static int hw_rule_format(struct snd_pcm_hw_params
*params
,
1687 struct snd_pcm_hw_rule
*rule
)
1689 struct snd_usb_substream
*subs
= rule
->private;
1690 struct list_head
*p
;
1691 struct snd_mask
*fmt
= hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
);
1696 hwc_debug("hw_rule_format: %x:%x\n", fmt
->bits
[0], fmt
->bits
[1]);
1698 list_for_each(p
, &subs
->fmt_list
) {
1699 struct audioformat
*fp
;
1700 fp
= list_entry(p
, struct audioformat
, list
);
1701 if (! hw_check_valid_format(params
, fp
))
1703 fbits
|= (1ULL << fp
->format
);
1706 oldbits
[0] = fmt
->bits
[0];
1707 oldbits
[1] = fmt
->bits
[1];
1708 fmt
->bits
[0] &= (u32
)fbits
;
1709 fmt
->bits
[1] &= (u32
)(fbits
>> 32);
1710 if (! fmt
->bits
[0] && ! fmt
->bits
[1]) {
1711 hwc_debug(" --> get empty\n");
1714 changed
= (oldbits
[0] != fmt
->bits
[0] || oldbits
[1] != fmt
->bits
[1]);
1715 hwc_debug(" --> %x:%x (changed = %d)\n", fmt
->bits
[0], fmt
->bits
[1], changed
);
1722 * check whether the registered audio formats need special hw-constraints
1724 static int check_hw_params_convention(struct snd_usb_substream
*subs
)
1729 u32 cmaster
, rmaster
;
1730 u32 rate_min
= 0, rate_max
= 0;
1731 struct list_head
*p
;
1734 channels
= kcalloc(MAX_MASK
, sizeof(u32
), GFP_KERNEL
);
1735 rates
= kcalloc(MAX_MASK
, sizeof(u32
), GFP_KERNEL
);
1737 list_for_each(p
, &subs
->fmt_list
) {
1738 struct audioformat
*f
;
1739 f
= list_entry(p
, struct audioformat
, list
);
1740 /* unconventional channels? */
1741 if (f
->channels
> 32)
1743 /* continuous rate min/max matches? */
1744 if (f
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
1745 if (rate_min
&& f
->rate_min
!= rate_min
)
1747 if (rate_max
&& f
->rate_max
!= rate_max
)
1749 rate_min
= f
->rate_min
;
1750 rate_max
= f
->rate_max
;
1752 /* combination of continuous rates and fixed rates? */
1753 if (rates
[f
->format
] & SNDRV_PCM_RATE_CONTINUOUS
) {
1754 if (f
->rates
!= rates
[f
->format
])
1757 if (f
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
1758 if (rates
[f
->format
] && rates
[f
->format
] != f
->rates
)
1761 channels
[f
->format
] |= (1 << f
->channels
);
1762 rates
[f
->format
] |= f
->rates
;
1767 /* check whether channels and rates match for all formats */
1768 cmaster
= rmaster
= 0;
1769 for (i
= 0; i
< MAX_MASK
; i
++) {
1770 if (cmaster
!= channels
[i
] && cmaster
&& channels
[i
])
1772 if (rmaster
!= rates
[i
] && rmaster
&& rates
[i
])
1775 cmaster
= channels
[i
];
1779 /* check whether channels match for all distinct rates */
1780 memset(channels
, 0, MAX_MASK
* sizeof(u32
));
1781 list_for_each(p
, &subs
->fmt_list
) {
1782 struct audioformat
*f
;
1783 f
= list_entry(p
, struct audioformat
, list
);
1784 if (f
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)
1786 for (i
= 0; i
< 32; i
++) {
1787 if (f
->rates
& (1 << i
))
1788 channels
[i
] |= (1 << f
->channels
);
1792 for (i
= 0; i
< 32; i
++) {
1793 if (cmaster
!= channels
[i
] && cmaster
&& channels
[i
])
1796 cmaster
= channels
[i
];
1807 * If the device supports unusual bit rates, does the request meet these?
1809 static int snd_usb_pcm_check_knot(struct snd_pcm_runtime
*runtime
,
1810 struct snd_usb_substream
*subs
)
1812 struct audioformat
*fp
;
1813 int count
= 0, needs_knot
= 0;
1816 list_for_each_entry(fp
, &subs
->fmt_list
, list
) {
1817 if (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)
1819 count
+= fp
->nr_rates
;
1826 subs
->rate_list
.count
= count
;
1827 subs
->rate_list
.list
= kmalloc(sizeof(int) * count
, GFP_KERNEL
);
1828 subs
->rate_list
.mask
= 0;
1830 list_for_each_entry(fp
, &subs
->fmt_list
, list
) {
1832 for (i
= 0; i
< fp
->nr_rates
; i
++)
1833 subs
->rate_list
.list
[count
++] = fp
->rate_table
[i
];
1835 err
= snd_pcm_hw_constraint_list(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
,
1845 * set up the runtime hardware information.
1848 static int setup_hw_info(struct snd_pcm_runtime
*runtime
, struct snd_usb_substream
*subs
)
1850 struct list_head
*p
;
1853 runtime
->hw
.formats
= subs
->formats
;
1855 runtime
->hw
.rate_min
= 0x7fffffff;
1856 runtime
->hw
.rate_max
= 0;
1857 runtime
->hw
.channels_min
= 256;
1858 runtime
->hw
.channels_max
= 0;
1859 runtime
->hw
.rates
= 0;
1860 /* check min/max rates and channels */
1861 list_for_each(p
, &subs
->fmt_list
) {
1862 struct audioformat
*fp
;
1863 fp
= list_entry(p
, struct audioformat
, list
);
1864 runtime
->hw
.rates
|= fp
->rates
;
1865 if (runtime
->hw
.rate_min
> fp
->rate_min
)
1866 runtime
->hw
.rate_min
= fp
->rate_min
;
1867 if (runtime
->hw
.rate_max
< fp
->rate_max
)
1868 runtime
->hw
.rate_max
= fp
->rate_max
;
1869 if (runtime
->hw
.channels_min
> fp
->channels
)
1870 runtime
->hw
.channels_min
= fp
->channels
;
1871 if (runtime
->hw
.channels_max
< fp
->channels
)
1872 runtime
->hw
.channels_max
= fp
->channels
;
1873 if (fp
->fmt_type
== USB_FORMAT_TYPE_II
&& fp
->frame_size
> 0) {
1874 /* FIXME: there might be more than one audio formats... */
1875 runtime
->hw
.period_bytes_min
= runtime
->hw
.period_bytes_max
=
1880 /* set the period time minimum 1ms */
1881 snd_pcm_hw_constraint_minmax(runtime
, SNDRV_PCM_HW_PARAM_PERIOD_TIME
,
1882 snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
?
1884 1000 * MIN_PACKS_URB
: 125 * MIN_PACKS_URB
,
1885 /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX
);
1887 if (check_hw_params_convention(subs
)) {
1888 hwc_debug("setting extra hw constraints...\n");
1889 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
,
1891 SNDRV_PCM_HW_PARAM_FORMAT
,
1892 SNDRV_PCM_HW_PARAM_CHANNELS
,
1895 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_CHANNELS
,
1896 hw_rule_channels
, subs
,
1897 SNDRV_PCM_HW_PARAM_FORMAT
,
1898 SNDRV_PCM_HW_PARAM_RATE
,
1901 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_FORMAT
,
1902 hw_rule_format
, subs
,
1903 SNDRV_PCM_HW_PARAM_RATE
,
1904 SNDRV_PCM_HW_PARAM_CHANNELS
,
1907 if ((err
= snd_usb_pcm_check_knot(runtime
, subs
)) < 0)
1913 static int snd_usb_pcm_open(struct snd_pcm_substream
*substream
, int direction
)
1915 struct snd_usb_stream
*as
= snd_pcm_substream_chip(substream
);
1916 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1917 struct snd_usb_substream
*subs
= &as
->substream
[direction
];
1919 subs
->interface
= -1;
1921 runtime
->hw
= snd_usb_hardware
;
1922 runtime
->private_data
= subs
;
1923 subs
->pcm_substream
= substream
;
1924 return setup_hw_info(runtime
, subs
);
1927 static int snd_usb_pcm_close(struct snd_pcm_substream
*substream
, int direction
)
1929 struct snd_usb_stream
*as
= snd_pcm_substream_chip(substream
);
1930 struct snd_usb_substream
*subs
= &as
->substream
[direction
];
1932 if (subs
->interface
>= 0) {
1933 usb_set_interface(subs
->dev
, subs
->interface
, 0);
1934 subs
->interface
= -1;
1936 subs
->pcm_substream
= NULL
;
1940 static int snd_usb_playback_open(struct snd_pcm_substream
*substream
)
1942 return snd_usb_pcm_open(substream
, SNDRV_PCM_STREAM_PLAYBACK
);
1945 static int snd_usb_playback_close(struct snd_pcm_substream
*substream
)
1947 return snd_usb_pcm_close(substream
, SNDRV_PCM_STREAM_PLAYBACK
);
1950 static int snd_usb_capture_open(struct snd_pcm_substream
*substream
)
1952 return snd_usb_pcm_open(substream
, SNDRV_PCM_STREAM_CAPTURE
);
1955 static int snd_usb_capture_close(struct snd_pcm_substream
*substream
)
1957 return snd_usb_pcm_close(substream
, SNDRV_PCM_STREAM_CAPTURE
);
1960 static struct snd_pcm_ops snd_usb_playback_ops
= {
1961 .open
= snd_usb_playback_open
,
1962 .close
= snd_usb_playback_close
,
1963 .ioctl
= snd_pcm_lib_ioctl
,
1964 .hw_params
= snd_usb_hw_params
,
1965 .hw_free
= snd_usb_hw_free
,
1966 .prepare
= snd_usb_pcm_prepare
,
1967 .trigger
= snd_usb_pcm_playback_trigger
,
1968 .pointer
= snd_usb_pcm_pointer
,
1969 .page
= snd_pcm_get_vmalloc_page
,
1972 static struct snd_pcm_ops snd_usb_capture_ops
= {
1973 .open
= snd_usb_capture_open
,
1974 .close
= snd_usb_capture_close
,
1975 .ioctl
= snd_pcm_lib_ioctl
,
1976 .hw_params
= snd_usb_hw_params
,
1977 .hw_free
= snd_usb_hw_free
,
1978 .prepare
= snd_usb_pcm_prepare
,
1979 .trigger
= snd_usb_pcm_capture_trigger
,
1980 .pointer
= snd_usb_pcm_pointer
,
1981 .page
= snd_pcm_get_vmalloc_page
,
1991 * combine bytes and get an integer value
1993 unsigned int snd_usb_combine_bytes(unsigned char *bytes
, int size
)
1996 case 1: return *bytes
;
1997 case 2: return combine_word(bytes
);
1998 case 3: return combine_triple(bytes
);
1999 case 4: return combine_quad(bytes
);
2005 * parse descriptor buffer and return the pointer starting the given
2008 void *snd_usb_find_desc(void *descstart
, int desclen
, void *after
, u8 dtype
)
2020 if (p
[1] == dtype
&& (!after
|| (void *)p
> after
)) {
2029 * find a class-specified interface descriptor with the given subtype.
2031 void *snd_usb_find_csint_desc(void *buffer
, int buflen
, void *after
, u8 dsubtype
)
2033 unsigned char *p
= after
;
2035 while ((p
= snd_usb_find_desc(buffer
, buflen
, p
,
2036 USB_DT_CS_INTERFACE
)) != NULL
) {
2037 if (p
[0] >= 3 && p
[2] == dsubtype
)
2044 * Wrapper for usb_control_msg().
2045 * Allocates a temp buffer to prevent dmaing from/to the stack.
2047 int snd_usb_ctl_msg(struct usb_device
*dev
, unsigned int pipe
, __u8 request
,
2048 __u8 requesttype
, __u16 value
, __u16 index
, void *data
,
2049 __u16 size
, int timeout
)
2055 buf
= kmemdup(data
, size
, GFP_KERNEL
);
2059 err
= usb_control_msg(dev
, pipe
, request
, requesttype
,
2060 value
, index
, buf
, size
, timeout
);
2062 memcpy(data
, buf
, size
);
2070 * entry point for linux usb interface
2073 static int usb_audio_probe(struct usb_interface
*intf
,
2074 const struct usb_device_id
*id
);
2075 static void usb_audio_disconnect(struct usb_interface
*intf
);
2077 static struct usb_device_id usb_audio_ids
[] = {
2078 #include "usbquirks.h"
2079 { .match_flags
= (USB_DEVICE_ID_MATCH_INT_CLASS
| USB_DEVICE_ID_MATCH_INT_SUBCLASS
),
2080 .bInterfaceClass
= USB_CLASS_AUDIO
,
2081 .bInterfaceSubClass
= USB_SUBCLASS_AUDIO_CONTROL
},
2082 { } /* Terminating entry */
2085 MODULE_DEVICE_TABLE (usb
, usb_audio_ids
);
2087 static struct usb_driver usb_audio_driver
= {
2088 .name
= "snd-usb-audio",
2089 .probe
= usb_audio_probe
,
2090 .disconnect
= usb_audio_disconnect
,
2091 .id_table
= usb_audio_ids
,
2095 #if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS)
2098 * proc interface for list the supported pcm formats
2100 static void proc_dump_substream_formats(struct snd_usb_substream
*subs
, struct snd_info_buffer
*buffer
)
2102 struct list_head
*p
;
2103 static char *sync_types
[4] = {
2104 "NONE", "ASYNC", "ADAPTIVE", "SYNC"
2107 list_for_each(p
, &subs
->fmt_list
) {
2108 struct audioformat
*fp
;
2109 fp
= list_entry(p
, struct audioformat
, list
);
2110 snd_iprintf(buffer
, " Interface %d\n", fp
->iface
);
2111 snd_iprintf(buffer
, " Altset %d\n", fp
->altsetting
);
2112 snd_iprintf(buffer
, " Format: 0x%x\n", fp
->format
);
2113 snd_iprintf(buffer
, " Channels: %d\n", fp
->channels
);
2114 snd_iprintf(buffer
, " Endpoint: %d %s (%s)\n",
2115 fp
->endpoint
& USB_ENDPOINT_NUMBER_MASK
,
2116 fp
->endpoint
& USB_DIR_IN
? "IN" : "OUT",
2117 sync_types
[(fp
->ep_attr
& EP_ATTR_MASK
) >> 2]);
2118 if (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
2119 snd_iprintf(buffer
, " Rates: %d - %d (continuous)\n",
2120 fp
->rate_min
, fp
->rate_max
);
2123 snd_iprintf(buffer
, " Rates: ");
2124 for (i
= 0; i
< fp
->nr_rates
; i
++) {
2126 snd_iprintf(buffer
, ", ");
2127 snd_iprintf(buffer
, "%d", fp
->rate_table
[i
]);
2129 snd_iprintf(buffer
, "\n");
2131 // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
2132 // snd_iprintf(buffer, " EP Attribute = 0x%x\n", fp->attributes);
2136 static void proc_dump_substream_status(struct snd_usb_substream
*subs
, struct snd_info_buffer
*buffer
)
2138 if (subs
->running
) {
2140 snd_iprintf(buffer
, " Status: Running\n");
2141 snd_iprintf(buffer
, " Interface = %d\n", subs
->interface
);
2142 snd_iprintf(buffer
, " Altset = %d\n", subs
->format
);
2143 snd_iprintf(buffer
, " URBs = %d [ ", subs
->nurbs
);
2144 for (i
= 0; i
< subs
->nurbs
; i
++)
2145 snd_iprintf(buffer
, "%d ", subs
->dataurb
[i
].packets
);
2146 snd_iprintf(buffer
, "]\n");
2147 snd_iprintf(buffer
, " Packet Size = %d\n", subs
->curpacksize
);
2148 snd_iprintf(buffer
, " Momentary freq = %u Hz (%#x.%04x)\n",
2149 snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
2150 ? get_full_speed_hz(subs
->freqm
)
2151 : get_high_speed_hz(subs
->freqm
),
2152 subs
->freqm
>> 16, subs
->freqm
& 0xffff);
2154 snd_iprintf(buffer
, " Status: Stop\n");
2158 static void proc_pcm_format_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
2160 struct snd_usb_stream
*stream
= entry
->private_data
;
2162 snd_iprintf(buffer
, "%s : %s\n", stream
->chip
->card
->longname
, stream
->pcm
->name
);
2164 if (stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
].num_formats
) {
2165 snd_iprintf(buffer
, "\nPlayback:\n");
2166 proc_dump_substream_status(&stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
], buffer
);
2167 proc_dump_substream_formats(&stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
], buffer
);
2169 if (stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
].num_formats
) {
2170 snd_iprintf(buffer
, "\nCapture:\n");
2171 proc_dump_substream_status(&stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
], buffer
);
2172 proc_dump_substream_formats(&stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
], buffer
);
2176 static void proc_pcm_format_add(struct snd_usb_stream
*stream
)
2178 struct snd_info_entry
*entry
;
2180 struct snd_card
*card
= stream
->chip
->card
;
2182 sprintf(name
, "stream%d", stream
->pcm_index
);
2183 if (! snd_card_proc_new(card
, name
, &entry
))
2184 snd_info_set_text_ops(entry
, stream
, proc_pcm_format_read
);
2189 static inline void proc_pcm_format_add(struct snd_usb_stream
*stream
)
2196 * initialize the substream instance.
2199 static void init_substream(struct snd_usb_stream
*as
, int stream
, struct audioformat
*fp
)
2201 struct snd_usb_substream
*subs
= &as
->substream
[stream
];
2203 INIT_LIST_HEAD(&subs
->fmt_list
);
2204 spin_lock_init(&subs
->lock
);
2207 subs
->direction
= stream
;
2208 subs
->dev
= as
->chip
->dev
;
2209 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
2210 subs
->ops
= audio_urb_ops
[stream
];
2212 subs
->ops
= audio_urb_ops_high_speed
[stream
];
2213 snd_pcm_set_ops(as
->pcm
, stream
,
2214 stream
== SNDRV_PCM_STREAM_PLAYBACK
?
2215 &snd_usb_playback_ops
: &snd_usb_capture_ops
);
2217 list_add_tail(&fp
->list
, &subs
->fmt_list
);
2218 subs
->formats
|= 1ULL << fp
->format
;
2219 subs
->endpoint
= fp
->endpoint
;
2220 subs
->num_formats
++;
2221 subs
->fmt_type
= fp
->fmt_type
;
2228 static void free_substream(struct snd_usb_substream
*subs
)
2230 struct list_head
*p
, *n
;
2232 if (! subs
->num_formats
)
2233 return; /* not initialized */
2234 list_for_each_safe(p
, n
, &subs
->fmt_list
) {
2235 struct audioformat
*fp
= list_entry(p
, struct audioformat
, list
);
2236 kfree(fp
->rate_table
);
2239 kfree(subs
->rate_list
.list
);
2244 * free a usb stream instance
2246 static void snd_usb_audio_stream_free(struct snd_usb_stream
*stream
)
2248 free_substream(&stream
->substream
[0]);
2249 free_substream(&stream
->substream
[1]);
2250 list_del(&stream
->list
);
2254 static void snd_usb_audio_pcm_free(struct snd_pcm
*pcm
)
2256 struct snd_usb_stream
*stream
= pcm
->private_data
;
2259 snd_usb_audio_stream_free(stream
);
2265 * add this endpoint to the chip instance.
2266 * if a stream with the same endpoint already exists, append to it.
2267 * if not, create a new pcm stream.
2269 static int add_audio_endpoint(struct snd_usb_audio
*chip
, int stream
, struct audioformat
*fp
)
2271 struct list_head
*p
;
2272 struct snd_usb_stream
*as
;
2273 struct snd_usb_substream
*subs
;
2274 struct snd_pcm
*pcm
;
2277 list_for_each(p
, &chip
->pcm_list
) {
2278 as
= list_entry(p
, struct snd_usb_stream
, list
);
2279 if (as
->fmt_type
!= fp
->fmt_type
)
2281 subs
= &as
->substream
[stream
];
2282 if (! subs
->endpoint
)
2284 if (subs
->endpoint
== fp
->endpoint
) {
2285 list_add_tail(&fp
->list
, &subs
->fmt_list
);
2286 subs
->num_formats
++;
2287 subs
->formats
|= 1ULL << fp
->format
;
2291 /* look for an empty stream */
2292 list_for_each(p
, &chip
->pcm_list
) {
2293 as
= list_entry(p
, struct snd_usb_stream
, list
);
2294 if (as
->fmt_type
!= fp
->fmt_type
)
2296 subs
= &as
->substream
[stream
];
2299 err
= snd_pcm_new_stream(as
->pcm
, stream
, 1);
2302 init_substream(as
, stream
, fp
);
2306 /* create a new pcm */
2307 as
= kzalloc(sizeof(*as
), GFP_KERNEL
);
2310 as
->pcm_index
= chip
->pcm_devs
;
2312 as
->fmt_type
= fp
->fmt_type
;
2313 err
= snd_pcm_new(chip
->card
, "USB Audio", chip
->pcm_devs
,
2314 stream
== SNDRV_PCM_STREAM_PLAYBACK
? 1 : 0,
2315 stream
== SNDRV_PCM_STREAM_PLAYBACK
? 0 : 1,
2322 pcm
->private_data
= as
;
2323 pcm
->private_free
= snd_usb_audio_pcm_free
;
2324 pcm
->info_flags
= 0;
2325 if (chip
->pcm_devs
> 0)
2326 sprintf(pcm
->name
, "USB Audio #%d", chip
->pcm_devs
);
2328 strcpy(pcm
->name
, "USB Audio");
2330 init_substream(as
, stream
, fp
);
2332 list_add(&as
->list
, &chip
->pcm_list
);
2335 proc_pcm_format_add(as
);
2342 * check if the device uses big-endian samples
2344 static int is_big_endian_format(struct snd_usb_audio
*chip
, struct audioformat
*fp
)
2346 switch (chip
->usb_id
) {
2347 case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
2348 if (fp
->endpoint
& USB_DIR_IN
)
2351 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2358 * parse the audio format type I descriptor
2359 * and returns the corresponding pcm format
2362 * @fp: audioformat record
2363 * @format: the format tag (wFormatTag)
2364 * @fmt: the format type descriptor
2366 static int parse_audio_format_i_type(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2367 int format
, unsigned char *fmt
)
2370 int sample_width
, sample_bytes
;
2372 /* FIXME: correct endianess and sign? */
2374 sample_width
= fmt
[6];
2375 sample_bytes
= fmt
[5];
2377 case 0: /* some devices don't define this correctly... */
2378 snd_printdd(KERN_INFO
"%d:%u:%d : format type 0 is detected, processed as PCM\n",
2379 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
);
2381 case USB_AUDIO_FORMAT_PCM
:
2382 if (sample_width
> sample_bytes
* 8) {
2383 snd_printk(KERN_INFO
"%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
2384 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
,
2385 sample_width
, sample_bytes
);
2387 /* check the format byte size */
2390 pcm_format
= SNDRV_PCM_FORMAT_S8
;
2393 if (is_big_endian_format(chip
, fp
))
2394 pcm_format
= SNDRV_PCM_FORMAT_S16_BE
; /* grrr, big endian!! */
2396 pcm_format
= SNDRV_PCM_FORMAT_S16_LE
;
2399 if (is_big_endian_format(chip
, fp
))
2400 pcm_format
= SNDRV_PCM_FORMAT_S24_3BE
; /* grrr, big endian!! */
2402 pcm_format
= SNDRV_PCM_FORMAT_S24_3LE
;
2405 pcm_format
= SNDRV_PCM_FORMAT_S32_LE
;
2408 snd_printk(KERN_INFO
"%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
2409 chip
->dev
->devnum
, fp
->iface
,
2410 fp
->altsetting
, sample_width
, sample_bytes
);
2414 case USB_AUDIO_FORMAT_PCM8
:
2415 /* Dallas DS4201 workaround */
2416 if (chip
->usb_id
== USB_ID(0x04fa, 0x4201))
2417 pcm_format
= SNDRV_PCM_FORMAT_S8
;
2419 pcm_format
= SNDRV_PCM_FORMAT_U8
;
2421 case USB_AUDIO_FORMAT_IEEE_FLOAT
:
2422 pcm_format
= SNDRV_PCM_FORMAT_FLOAT_LE
;
2424 case USB_AUDIO_FORMAT_ALAW
:
2425 pcm_format
= SNDRV_PCM_FORMAT_A_LAW
;
2427 case USB_AUDIO_FORMAT_MU_LAW
:
2428 pcm_format
= SNDRV_PCM_FORMAT_MU_LAW
;
2431 snd_printk(KERN_INFO
"%d:%u:%d : unsupported format type %d\n",
2432 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, format
);
2440 * parse the format descriptor and stores the possible sample rates
2441 * on the audioformat table.
2444 * @fp: audioformat record
2445 * @fmt: the format descriptor
2446 * @offset: the start offset of descriptor pointing the rate type
2447 * (7 for type I and II, 8 for type II)
2449 static int parse_audio_format_rates(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2450 unsigned char *fmt
, int offset
)
2452 int nr_rates
= fmt
[offset
];
2454 if (fmt
[0] < offset
+ 1 + 3 * (nr_rates
? nr_rates
: 2)) {
2455 snd_printk(KERN_ERR
"%d:%u:%d : invalid FORMAT_TYPE desc\n",
2456 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
);
2462 * build the rate table and bitmap flags
2465 unsigned int nonzero_rates
= 0;
2466 /* this table corresponds to the SNDRV_PCM_RATE_XXX bit */
2467 static unsigned int conv_rates
[] = {
2468 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000,
2469 64000, 88200, 96000, 176400, 192000
2471 fp
->rate_table
= kmalloc(sizeof(int) * nr_rates
, GFP_KERNEL
);
2472 if (fp
->rate_table
== NULL
) {
2473 snd_printk(KERN_ERR
"cannot malloc\n");
2478 fp
->nr_rates
= nr_rates
;
2479 fp
->rate_min
= fp
->rate_max
= combine_triple(&fmt
[8]);
2480 for (r
= 0, idx
= offset
+ 1; r
< nr_rates
; r
++, idx
+= 3) {
2481 unsigned int rate
= combine_triple(&fmt
[idx
]);
2482 /* C-Media CM6501 mislabels its 96 kHz altsetting */
2483 if (rate
== 48000 && nr_rates
== 1 &&
2484 chip
->usb_id
== USB_ID(0x0d8c, 0x0201) &&
2485 fp
->altsetting
== 5 && fp
->maxpacksize
== 392)
2487 fp
->rate_table
[r
] = rate
;
2488 nonzero_rates
|= rate
;
2489 if (rate
< fp
->rate_min
)
2490 fp
->rate_min
= rate
;
2491 else if (rate
> fp
->rate_max
)
2492 fp
->rate_max
= rate
;
2494 for (c
= 0; c
< (int)ARRAY_SIZE(conv_rates
); c
++) {
2495 if (rate
== conv_rates
[c
]) {
2497 fp
->rates
|= (1 << c
);
2504 if (!nonzero_rates
) {
2505 hwc_debug("All rates were zero. Skipping format!\n");
2509 fp
->rates
|= SNDRV_PCM_RATE_KNOT
;
2511 /* continuous rates */
2512 fp
->rates
= SNDRV_PCM_RATE_CONTINUOUS
;
2513 fp
->rate_min
= combine_triple(&fmt
[offset
+ 1]);
2514 fp
->rate_max
= combine_triple(&fmt
[offset
+ 4]);
2520 * parse the format type I and III descriptors
2522 static int parse_audio_format_i(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2523 int format
, unsigned char *fmt
)
2527 if (fmt
[3] == USB_FORMAT_TYPE_III
) {
2528 /* FIXME: the format type is really IECxxx
2529 * but we give normal PCM format to get the existing
2532 pcm_format
= SNDRV_PCM_FORMAT_S16_LE
;
2534 pcm_format
= parse_audio_format_i_type(chip
, fp
, format
, fmt
);
2538 fp
->format
= pcm_format
;
2539 fp
->channels
= fmt
[4];
2540 if (fp
->channels
< 1) {
2541 snd_printk(KERN_ERR
"%d:%u:%d : invalid channels %d\n",
2542 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, fp
->channels
);
2545 return parse_audio_format_rates(chip
, fp
, fmt
, 7);
2549 * prase the format type II descriptor
2551 static int parse_audio_format_ii(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2552 int format
, unsigned char *fmt
)
2554 int brate
, framesize
;
2556 case USB_AUDIO_FORMAT_AC3
:
2557 /* FIXME: there is no AC3 format defined yet */
2558 // fp->format = SNDRV_PCM_FORMAT_AC3;
2559 fp
->format
= SNDRV_PCM_FORMAT_U8
; /* temporarily hack to receive byte streams */
2561 case USB_AUDIO_FORMAT_MPEG
:
2562 fp
->format
= SNDRV_PCM_FORMAT_MPEG
;
2565 snd_printd(KERN_INFO
"%d:%u:%d : unknown format tag 0x%x is detected. processed as MPEG.\n",
2566 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, format
);
2567 fp
->format
= SNDRV_PCM_FORMAT_MPEG
;
2571 brate
= combine_word(&fmt
[4]); /* fmt[4,5] : wMaxBitRate (in kbps) */
2572 framesize
= combine_word(&fmt
[6]); /* fmt[6,7]: wSamplesPerFrame */
2573 snd_printd(KERN_INFO
"found format II with max.bitrate = %d, frame size=%d\n", brate
, framesize
);
2574 fp
->frame_size
= framesize
;
2575 return parse_audio_format_rates(chip
, fp
, fmt
, 8); /* fmt[8..] sample rates */
2578 static int parse_audio_format(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2579 int format
, unsigned char *fmt
, int stream
)
2584 case USB_FORMAT_TYPE_I
:
2585 case USB_FORMAT_TYPE_III
:
2586 err
= parse_audio_format_i(chip
, fp
, format
, fmt
);
2588 case USB_FORMAT_TYPE_II
:
2589 err
= parse_audio_format_ii(chip
, fp
, format
, fmt
);
2592 snd_printd(KERN_INFO
"%d:%u:%d : format type %d is not supported yet\n",
2593 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, fmt
[3]);
2596 fp
->fmt_type
= fmt
[3];
2600 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
2601 /* extigy apparently supports sample rates other than 48k
2602 * but not in ordinary way. so we enable only 48k atm.
2604 if (chip
->usb_id
== USB_ID(0x041e, 0x3000) ||
2605 chip
->usb_id
== USB_ID(0x041e, 0x3020) ||
2606 chip
->usb_id
== USB_ID(0x041e, 0x3061)) {
2607 if (fmt
[3] == USB_FORMAT_TYPE_I
&&
2608 fp
->rates
!= SNDRV_PCM_RATE_48000
&&
2609 fp
->rates
!= SNDRV_PCM_RATE_96000
)
2616 static int audiophile_skip_setting_quirk(struct snd_usb_audio
*chip
,
2617 int iface
, int altno
);
2618 static int parse_audio_endpoints(struct snd_usb_audio
*chip
, int iface_no
)
2620 struct usb_device
*dev
;
2621 struct usb_interface
*iface
;
2622 struct usb_host_interface
*alts
;
2623 struct usb_interface_descriptor
*altsd
;
2624 int i
, altno
, err
, stream
;
2626 struct audioformat
*fp
;
2627 unsigned char *fmt
, *csep
;
2631 /* parse the interface's altsettings */
2632 iface
= usb_ifnum_to_if(dev
, iface_no
);
2633 for (i
= 0; i
< iface
->num_altsetting
; i
++) {
2634 alts
= &iface
->altsetting
[i
];
2635 altsd
= get_iface_desc(alts
);
2636 /* skip invalid one */
2637 if ((altsd
->bInterfaceClass
!= USB_CLASS_AUDIO
&&
2638 altsd
->bInterfaceClass
!= USB_CLASS_VENDOR_SPEC
) ||
2639 (altsd
->bInterfaceSubClass
!= USB_SUBCLASS_AUDIO_STREAMING
&&
2640 altsd
->bInterfaceSubClass
!= USB_SUBCLASS_VENDOR_SPEC
) ||
2641 altsd
->bNumEndpoints
< 1 ||
2642 le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
) == 0)
2644 /* must be isochronous */
2645 if ((get_endpoint(alts
, 0)->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) !=
2646 USB_ENDPOINT_XFER_ISOC
)
2648 /* check direction */
2649 stream
= (get_endpoint(alts
, 0)->bEndpointAddress
& USB_DIR_IN
) ?
2650 SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
2651 altno
= altsd
->bAlternateSetting
;
2653 /* audiophile usb: skip altsets incompatible with device_setup
2655 if (chip
->usb_id
== USB_ID(0x0763, 0x2003) &&
2656 audiophile_skip_setting_quirk(chip
, iface_no
, altno
))
2659 /* get audio formats */
2660 fmt
= snd_usb_find_csint_desc(alts
->extra
, alts
->extralen
, NULL
, AS_GENERAL
);
2662 snd_printk(KERN_ERR
"%d:%u:%d : AS_GENERAL descriptor not found\n",
2663 dev
->devnum
, iface_no
, altno
);
2668 snd_printk(KERN_ERR
"%d:%u:%d : invalid AS_GENERAL desc\n",
2669 dev
->devnum
, iface_no
, altno
);
2673 format
= (fmt
[6] << 8) | fmt
[5]; /* remember the format value */
2675 /* get format type */
2676 fmt
= snd_usb_find_csint_desc(alts
->extra
, alts
->extralen
, NULL
, FORMAT_TYPE
);
2678 snd_printk(KERN_ERR
"%d:%u:%d : no FORMAT_TYPE desc\n",
2679 dev
->devnum
, iface_no
, altno
);
2683 snd_printk(KERN_ERR
"%d:%u:%d : invalid FORMAT_TYPE desc\n",
2684 dev
->devnum
, iface_no
, altno
);
2688 csep
= snd_usb_find_desc(alts
->endpoint
[0].extra
, alts
->endpoint
[0].extralen
, NULL
, USB_DT_CS_ENDPOINT
);
2689 /* Creamware Noah has this descriptor after the 2nd endpoint */
2690 if (!csep
&& altsd
->bNumEndpoints
>= 2)
2691 csep
= snd_usb_find_desc(alts
->endpoint
[1].extra
, alts
->endpoint
[1].extralen
, NULL
, USB_DT_CS_ENDPOINT
);
2692 if (!csep
|| csep
[0] < 7 || csep
[2] != EP_GENERAL
) {
2693 snd_printk(KERN_WARNING
"%d:%u:%d : no or invalid"
2694 " class specific endpoint descriptor\n",
2695 dev
->devnum
, iface_no
, altno
);
2699 fp
= kzalloc(sizeof(*fp
), GFP_KERNEL
);
2701 snd_printk(KERN_ERR
"cannot malloc\n");
2705 fp
->iface
= iface_no
;
2706 fp
->altsetting
= altno
;
2708 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
2709 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
2710 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
2711 if (snd_usb_get_speed(dev
) == USB_SPEED_HIGH
)
2712 fp
->maxpacksize
= (((fp
->maxpacksize
>> 11) & 3) + 1)
2713 * (fp
->maxpacksize
& 0x7ff);
2714 fp
->attributes
= csep
? csep
[3] : 0;
2716 /* some quirks for attributes here */
2718 switch (chip
->usb_id
) {
2719 case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
2720 /* Optoplay sets the sample rate attribute although
2721 * it seems not supporting it in fact.
2723 fp
->attributes
&= ~EP_CS_ATTR_SAMPLE_RATE
;
2725 case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
2726 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2727 /* doesn't set the sample rate attribute, but supports it */
2728 fp
->attributes
|= EP_CS_ATTR_SAMPLE_RATE
;
2730 case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
2731 case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
2732 an older model 77d:223) */
2734 * plantronics headset and Griffin iMic have set adaptive-in
2735 * although it's really not...
2737 fp
->ep_attr
&= ~EP_ATTR_MASK
;
2738 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
2739 fp
->ep_attr
|= EP_ATTR_ADAPTIVE
;
2741 fp
->ep_attr
|= EP_ATTR_SYNC
;
2745 /* ok, let's parse further... */
2746 if (parse_audio_format(chip
, fp
, format
, fmt
, stream
) < 0) {
2747 kfree(fp
->rate_table
);
2752 snd_printdd(KERN_INFO
"%d:%u:%d: add audio endpoint 0x%x\n", dev
->devnum
, iface_no
, altno
, fp
->endpoint
);
2753 err
= add_audio_endpoint(chip
, stream
, fp
);
2755 kfree(fp
->rate_table
);
2759 /* try to set the interface... */
2760 usb_set_interface(chip
->dev
, iface_no
, altno
);
2761 init_usb_pitch(chip
->dev
, iface_no
, alts
, fp
);
2762 init_usb_sample_rate(chip
->dev
, iface_no
, alts
, fp
, fp
->rate_max
);
2769 * disconnect streams
2770 * called from snd_usb_audio_disconnect()
2772 static void snd_usb_stream_disconnect(struct list_head
*head
)
2775 struct snd_usb_stream
*as
;
2776 struct snd_usb_substream
*subs
;
2778 as
= list_entry(head
, struct snd_usb_stream
, list
);
2779 for (idx
= 0; idx
< 2; idx
++) {
2780 subs
= &as
->substream
[idx
];
2781 if (!subs
->num_formats
)
2783 release_substream_urbs(subs
, 1);
2784 subs
->interface
= -1;
2789 * parse audio control descriptor and create pcm/midi streams
2791 static int snd_usb_create_streams(struct snd_usb_audio
*chip
, int ctrlif
)
2793 struct usb_device
*dev
= chip
->dev
;
2794 struct usb_host_interface
*host_iface
;
2795 struct usb_interface
*iface
;
2799 /* find audiocontrol interface */
2800 host_iface
= &usb_ifnum_to_if(dev
, ctrlif
)->altsetting
[0];
2801 if (!(p1
= snd_usb_find_csint_desc(host_iface
->extra
, host_iface
->extralen
, NULL
, HEADER
))) {
2802 snd_printk(KERN_ERR
"cannot find HEADER\n");
2805 if (! p1
[7] || p1
[0] < 8 + p1
[7]) {
2806 snd_printk(KERN_ERR
"invalid HEADER\n");
2811 * parse all USB audio streaming interfaces
2813 for (i
= 0; i
< p1
[7]; i
++) {
2814 struct usb_host_interface
*alts
;
2815 struct usb_interface_descriptor
*altsd
;
2817 iface
= usb_ifnum_to_if(dev
, j
);
2819 snd_printk(KERN_ERR
"%d:%u:%d : does not exist\n",
2820 dev
->devnum
, ctrlif
, j
);
2823 if (usb_interface_claimed(iface
)) {
2824 snd_printdd(KERN_INFO
"%d:%d:%d: skipping, already claimed\n", dev
->devnum
, ctrlif
, j
);
2827 alts
= &iface
->altsetting
[0];
2828 altsd
= get_iface_desc(alts
);
2829 if ((altsd
->bInterfaceClass
== USB_CLASS_AUDIO
||
2830 altsd
->bInterfaceClass
== USB_CLASS_VENDOR_SPEC
) &&
2831 altsd
->bInterfaceSubClass
== USB_SUBCLASS_MIDI_STREAMING
) {
2832 if (snd_usb_create_midi_interface(chip
, iface
, NULL
) < 0) {
2833 snd_printk(KERN_ERR
"%d:%u:%d: cannot create sequencer device\n", dev
->devnum
, ctrlif
, j
);
2836 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
2839 if ((altsd
->bInterfaceClass
!= USB_CLASS_AUDIO
&&
2840 altsd
->bInterfaceClass
!= USB_CLASS_VENDOR_SPEC
) ||
2841 altsd
->bInterfaceSubClass
!= USB_SUBCLASS_AUDIO_STREAMING
) {
2842 snd_printdd(KERN_ERR
"%d:%u:%d: skipping non-supported interface %d\n", dev
->devnum
, ctrlif
, j
, altsd
->bInterfaceClass
);
2843 /* skip non-supported classes */
2846 if (! parse_audio_endpoints(chip
, j
)) {
2847 usb_set_interface(dev
, j
, 0); /* reset the current interface */
2848 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
2856 * create a stream for an endpoint/altsetting without proper descriptors
2858 static int create_fixed_stream_quirk(struct snd_usb_audio
*chip
,
2859 struct usb_interface
*iface
,
2860 const struct snd_usb_audio_quirk
*quirk
)
2862 struct audioformat
*fp
;
2863 struct usb_host_interface
*alts
;
2865 int *rate_table
= NULL
;
2867 fp
= kmemdup(quirk
->data
, sizeof(*fp
), GFP_KERNEL
);
2869 snd_printk(KERN_ERR
"cannot memdup\n");
2872 if (fp
->nr_rates
> 0) {
2873 rate_table
= kmalloc(sizeof(int) * fp
->nr_rates
, GFP_KERNEL
);
2878 memcpy(rate_table
, fp
->rate_table
, sizeof(int) * fp
->nr_rates
);
2879 fp
->rate_table
= rate_table
;
2882 stream
= (fp
->endpoint
& USB_DIR_IN
)
2883 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
2884 err
= add_audio_endpoint(chip
, stream
, fp
);
2890 if (fp
->iface
!= get_iface_desc(&iface
->altsetting
[0])->bInterfaceNumber
||
2891 fp
->altset_idx
>= iface
->num_altsetting
) {
2896 alts
= &iface
->altsetting
[fp
->altset_idx
];
2897 usb_set_interface(chip
->dev
, fp
->iface
, 0);
2898 init_usb_pitch(chip
->dev
, fp
->iface
, alts
, fp
);
2899 init_usb_sample_rate(chip
->dev
, fp
->iface
, alts
, fp
, fp
->rate_max
);
2904 * create a stream for an interface with proper descriptors
2906 static int create_standard_audio_quirk(struct snd_usb_audio
*chip
,
2907 struct usb_interface
*iface
,
2908 const struct snd_usb_audio_quirk
*quirk
)
2910 struct usb_host_interface
*alts
;
2911 struct usb_interface_descriptor
*altsd
;
2914 alts
= &iface
->altsetting
[0];
2915 altsd
= get_iface_desc(alts
);
2916 err
= parse_audio_endpoints(chip
, altsd
->bInterfaceNumber
);
2918 snd_printk(KERN_ERR
"cannot setup if %d: error %d\n",
2919 altsd
->bInterfaceNumber
, err
);
2922 /* reset the current interface */
2923 usb_set_interface(chip
->dev
, altsd
->bInterfaceNumber
, 0);
2928 * Create a stream for an Edirol UA-700/UA-25 interface. The only way
2929 * to detect the sample rate is by looking at wMaxPacketSize.
2931 static int create_ua700_ua25_quirk(struct snd_usb_audio
*chip
,
2932 struct usb_interface
*iface
,
2933 const struct snd_usb_audio_quirk
*quirk
)
2935 static const struct audioformat ua_format
= {
2936 .format
= SNDRV_PCM_FORMAT_S24_3LE
,
2938 .fmt_type
= USB_FORMAT_TYPE_I
,
2941 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
2943 struct usb_host_interface
*alts
;
2944 struct usb_interface_descriptor
*altsd
;
2945 struct audioformat
*fp
;
2948 /* both PCM and MIDI interfaces have 2 altsettings */
2949 if (iface
->num_altsetting
!= 2)
2951 alts
= &iface
->altsetting
[1];
2952 altsd
= get_iface_desc(alts
);
2954 if (altsd
->bNumEndpoints
== 2) {
2955 static const struct snd_usb_midi_endpoint_info ua700_ep
= {
2956 .out_cables
= 0x0003,
2959 static const struct snd_usb_audio_quirk ua700_quirk
= {
2960 .type
= QUIRK_MIDI_FIXED_ENDPOINT
,
2963 static const struct snd_usb_midi_endpoint_info ua25_ep
= {
2964 .out_cables
= 0x0001,
2967 static const struct snd_usb_audio_quirk ua25_quirk
= {
2968 .type
= QUIRK_MIDI_FIXED_ENDPOINT
,
2971 if (chip
->usb_id
== USB_ID(0x0582, 0x002b))
2972 return snd_usb_create_midi_interface(chip
, iface
,
2975 return snd_usb_create_midi_interface(chip
, iface
,
2979 if (altsd
->bNumEndpoints
!= 1)
2982 fp
= kmalloc(sizeof(*fp
), GFP_KERNEL
);
2985 memcpy(fp
, &ua_format
, sizeof(*fp
));
2987 fp
->iface
= altsd
->bInterfaceNumber
;
2988 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
2989 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
2990 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
2992 switch (fp
->maxpacksize
) {
2994 fp
->rate_max
= fp
->rate_min
= 44100;
2998 fp
->rate_max
= fp
->rate_min
= 48000;
3002 fp
->rate_max
= fp
->rate_min
= 96000;
3005 snd_printk(KERN_ERR
"unknown sample rate\n");
3010 stream
= (fp
->endpoint
& USB_DIR_IN
)
3011 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3012 err
= add_audio_endpoint(chip
, stream
, fp
);
3017 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3022 * Create a stream for an Edirol UA-1000 interface.
3024 static int create_ua1000_quirk(struct snd_usb_audio
*chip
,
3025 struct usb_interface
*iface
,
3026 const struct snd_usb_audio_quirk
*quirk
)
3028 static const struct audioformat ua1000_format
= {
3029 .format
= SNDRV_PCM_FORMAT_S32_LE
,
3030 .fmt_type
= USB_FORMAT_TYPE_I
,
3034 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
3036 struct usb_host_interface
*alts
;
3037 struct usb_interface_descriptor
*altsd
;
3038 struct audioformat
*fp
;
3041 if (iface
->num_altsetting
!= 2)
3043 alts
= &iface
->altsetting
[1];
3044 altsd
= get_iface_desc(alts
);
3045 if (alts
->extralen
!= 11 || alts
->extra
[1] != USB_DT_CS_INTERFACE
||
3046 altsd
->bNumEndpoints
!= 1)
3049 fp
= kmemdup(&ua1000_format
, sizeof(*fp
), GFP_KERNEL
);
3053 fp
->channels
= alts
->extra
[4];
3054 fp
->iface
= altsd
->bInterfaceNumber
;
3055 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
3056 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
3057 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
3058 fp
->rate_max
= fp
->rate_min
= combine_triple(&alts
->extra
[8]);
3060 stream
= (fp
->endpoint
& USB_DIR_IN
)
3061 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3062 err
= add_audio_endpoint(chip
, stream
, fp
);
3067 /* FIXME: playback must be synchronized to capture */
3068 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3073 * Create a stream for an Edirol UA-101 interface.
3074 * Copy, paste and modify from Edirol UA-1000
3076 static int create_ua101_quirk(struct snd_usb_audio
*chip
,
3077 struct usb_interface
*iface
,
3078 const struct snd_usb_audio_quirk
*quirk
)
3080 static const struct audioformat ua101_format
= {
3081 .format
= SNDRV_PCM_FORMAT_S32_LE
,
3082 .fmt_type
= USB_FORMAT_TYPE_I
,
3086 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
3088 struct usb_host_interface
*alts
;
3089 struct usb_interface_descriptor
*altsd
;
3090 struct audioformat
*fp
;
3093 if (iface
->num_altsetting
!= 2)
3095 alts
= &iface
->altsetting
[1];
3096 altsd
= get_iface_desc(alts
);
3097 if (alts
->extralen
!= 18 || alts
->extra
[1] != USB_DT_CS_INTERFACE
||
3098 altsd
->bNumEndpoints
!= 1)
3101 fp
= kmemdup(&ua101_format
, sizeof(*fp
), GFP_KERNEL
);
3105 fp
->channels
= alts
->extra
[11];
3106 fp
->iface
= altsd
->bInterfaceNumber
;
3107 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
3108 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
3109 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
3110 fp
->rate_max
= fp
->rate_min
= combine_triple(&alts
->extra
[15]);
3112 stream
= (fp
->endpoint
& USB_DIR_IN
)
3113 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3114 err
= add_audio_endpoint(chip
, stream
, fp
);
3119 /* FIXME: playback must be synchronized to capture */
3120 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3124 static int snd_usb_create_quirk(struct snd_usb_audio
*chip
,
3125 struct usb_interface
*iface
,
3126 const struct snd_usb_audio_quirk
*quirk
);
3129 * handle the quirks for the contained interfaces
3131 static int create_composite_quirk(struct snd_usb_audio
*chip
,
3132 struct usb_interface
*iface
,
3133 const struct snd_usb_audio_quirk
*quirk
)
3135 int probed_ifnum
= get_iface_desc(iface
->altsetting
)->bInterfaceNumber
;
3138 for (quirk
= quirk
->data
; quirk
->ifnum
>= 0; ++quirk
) {
3139 iface
= usb_ifnum_to_if(chip
->dev
, quirk
->ifnum
);
3142 if (quirk
->ifnum
!= probed_ifnum
&&
3143 usb_interface_claimed(iface
))
3145 err
= snd_usb_create_quirk(chip
, iface
, quirk
);
3148 if (quirk
->ifnum
!= probed_ifnum
)
3149 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
3154 static int ignore_interface_quirk(struct snd_usb_audio
*chip
,
3155 struct usb_interface
*iface
,
3156 const struct snd_usb_audio_quirk
*quirk
)
3166 #define EXTIGY_FIRMWARE_SIZE_OLD 794
3167 #define EXTIGY_FIRMWARE_SIZE_NEW 483
3169 static int snd_usb_extigy_boot_quirk(struct usb_device
*dev
, struct usb_interface
*intf
)
3171 struct usb_host_config
*config
= dev
->actconfig
;
3174 if (le16_to_cpu(get_cfg_desc(config
)->wTotalLength
) == EXTIGY_FIRMWARE_SIZE_OLD
||
3175 le16_to_cpu(get_cfg_desc(config
)->wTotalLength
) == EXTIGY_FIRMWARE_SIZE_NEW
) {
3176 snd_printdd("sending Extigy boot sequence...\n");
3177 /* Send message to force it to reconnect with full interface. */
3178 err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
,0),
3179 0x10, 0x43, 0x0001, 0x000a, NULL
, 0, 1000);
3180 if (err
< 0) snd_printdd("error sending boot message: %d\n", err
);
3181 err
= usb_get_descriptor(dev
, USB_DT_DEVICE
, 0,
3182 &dev
->descriptor
, sizeof(dev
->descriptor
));
3183 config
= dev
->actconfig
;
3184 if (err
< 0) snd_printdd("error usb_get_descriptor: %d\n", err
);
3185 err
= usb_reset_configuration(dev
);
3186 if (err
< 0) snd_printdd("error usb_reset_configuration: %d\n", err
);
3187 snd_printdd("extigy_boot: new boot length = %d\n",
3188 le16_to_cpu(get_cfg_desc(config
)->wTotalLength
));
3189 return -ENODEV
; /* quit this anyway */
3194 static int snd_usb_audigy2nx_boot_quirk(struct usb_device
*dev
)
3198 snd_usb_ctl_msg(dev
, usb_rcvctrlpipe(dev
, 0), 0x2a,
3199 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
3200 0, 0, &buf
, 1, 1000);
3202 snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), 0x29,
3203 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
3204 1, 2000, NULL
, 0, 1000);
3211 * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
3212 * documented in the device's data sheet.
3214 static int snd_usb_cm106_write_int_reg(struct usb_device
*dev
, int reg
, u16 value
)
3218 buf
[1] = value
& 0xff;
3219 buf
[2] = (value
>> 8) & 0xff;
3221 return snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), USB_REQ_SET_CONFIGURATION
,
3222 USB_DIR_OUT
| USB_TYPE_CLASS
| USB_RECIP_ENDPOINT
,
3223 0, 0, &buf
, 4, 1000);
3226 static int snd_usb_cm106_boot_quirk(struct usb_device
*dev
)
3229 * Enable line-out driver mode, set headphone source to front
3230 * channels, enable stereo mic.
3232 return snd_usb_cm106_write_int_reg(dev
, 2, 0x8004);
3239 #define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
3240 #define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
3241 #define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
3242 #define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
3243 #define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
3244 #define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
3245 #define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
3246 #define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
3247 #define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
3248 #define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
3250 static int audiophile_skip_setting_quirk(struct snd_usb_audio
*chip
,
3251 int iface
, int altno
)
3253 if (device_setup
[chip
->index
] & AUDIOPHILE_SET
) {
3254 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_DTS
)
3256 return 1; /* skip this altsetting */
3257 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_96K
)
3259 return 1; /* skip this altsetting */
3260 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3261 AUDIOPHILE_SET_24B_48K_DI
&& altno
!= 2)
3262 return 1; /* skip this altsetting */
3263 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3264 AUDIOPHILE_SET_24B_48K_NOTDI
&& altno
!= 3)
3265 return 1; /* skip this altsetting */
3266 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3267 AUDIOPHILE_SET_16B_48K_DI
&& altno
!= 4)
3268 return 1; /* skip this altsetting */
3269 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3270 AUDIOPHILE_SET_16B_48K_NOTDI
&& altno
!= 5)
3271 return 1; /* skip this altsetting */
3273 return 0; /* keep this altsetting */
3277 * audio-interface quirks
3279 * returns zero if no standard audio/MIDI parsing is needed.
3280 * returns a postive value if standard audio/midi interfaces are parsed
3282 * returns a negative value at error.
3284 static int snd_usb_create_quirk(struct snd_usb_audio
*chip
,
3285 struct usb_interface
*iface
,
3286 const struct snd_usb_audio_quirk
*quirk
)
3288 typedef int (*quirk_func_t
)(struct snd_usb_audio
*, struct usb_interface
*,
3289 const struct snd_usb_audio_quirk
*);
3290 static const quirk_func_t quirk_funcs
[] = {
3291 [QUIRK_IGNORE_INTERFACE
] = ignore_interface_quirk
,
3292 [QUIRK_COMPOSITE
] = create_composite_quirk
,
3293 [QUIRK_MIDI_STANDARD_INTERFACE
] = snd_usb_create_midi_interface
,
3294 [QUIRK_MIDI_FIXED_ENDPOINT
] = snd_usb_create_midi_interface
,
3295 [QUIRK_MIDI_YAMAHA
] = snd_usb_create_midi_interface
,
3296 [QUIRK_MIDI_MIDIMAN
] = snd_usb_create_midi_interface
,
3297 [QUIRK_MIDI_NOVATION
] = snd_usb_create_midi_interface
,
3298 [QUIRK_MIDI_RAW
] = snd_usb_create_midi_interface
,
3299 [QUIRK_MIDI_EMAGIC
] = snd_usb_create_midi_interface
,
3300 [QUIRK_MIDI_CME
] = snd_usb_create_midi_interface
,
3301 [QUIRK_AUDIO_STANDARD_INTERFACE
] = create_standard_audio_quirk
,
3302 [QUIRK_AUDIO_FIXED_ENDPOINT
] = create_fixed_stream_quirk
,
3303 [QUIRK_AUDIO_EDIROL_UA700_UA25
] = create_ua700_ua25_quirk
,
3304 [QUIRK_AUDIO_EDIROL_UA1000
] = create_ua1000_quirk
,
3305 [QUIRK_AUDIO_EDIROL_UA101
] = create_ua101_quirk
,
3308 if (quirk
->type
< QUIRK_TYPE_COUNT
) {
3309 return quirk_funcs
[quirk
->type
](chip
, iface
, quirk
);
3311 snd_printd(KERN_ERR
"invalid quirk type %d\n", quirk
->type
);
3318 * common proc files to show the usb device info
3320 static void proc_audio_usbbus_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
3322 struct snd_usb_audio
*chip
= entry
->private_data
;
3323 if (! chip
->shutdown
)
3324 snd_iprintf(buffer
, "%03d/%03d\n", chip
->dev
->bus
->busnum
, chip
->dev
->devnum
);
3327 static void proc_audio_usbid_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
3329 struct snd_usb_audio
*chip
= entry
->private_data
;
3330 if (! chip
->shutdown
)
3331 snd_iprintf(buffer
, "%04x:%04x\n",
3332 USB_ID_VENDOR(chip
->usb_id
),
3333 USB_ID_PRODUCT(chip
->usb_id
));
3336 static void snd_usb_audio_create_proc(struct snd_usb_audio
*chip
)
3338 struct snd_info_entry
*entry
;
3339 if (! snd_card_proc_new(chip
->card
, "usbbus", &entry
))
3340 snd_info_set_text_ops(entry
, chip
, proc_audio_usbbus_read
);
3341 if (! snd_card_proc_new(chip
->card
, "usbid", &entry
))
3342 snd_info_set_text_ops(entry
, chip
, proc_audio_usbid_read
);
3346 * free the chip instance
3348 * here we have to do not much, since pcm and controls are already freed
3352 static int snd_usb_audio_free(struct snd_usb_audio
*chip
)
3354 usb_chip
[chip
->index
] = NULL
;
3359 static int snd_usb_audio_dev_free(struct snd_device
*device
)
3361 struct snd_usb_audio
*chip
= device
->device_data
;
3362 return snd_usb_audio_free(chip
);
3367 * create a chip instance and set its names.
3369 static int snd_usb_audio_create(struct usb_device
*dev
, int idx
,
3370 const struct snd_usb_audio_quirk
*quirk
,
3371 struct snd_usb_audio
**rchip
)
3373 struct snd_card
*card
;
3374 struct snd_usb_audio
*chip
;
3377 static struct snd_device_ops ops
= {
3378 .dev_free
= snd_usb_audio_dev_free
,
3383 if (snd_usb_get_speed(dev
) != USB_SPEED_FULL
&&
3384 snd_usb_get_speed(dev
) != USB_SPEED_HIGH
) {
3385 snd_printk(KERN_ERR
"unknown device speed %d\n", snd_usb_get_speed(dev
));
3389 card
= snd_card_new(index
[idx
], id
[idx
], THIS_MODULE
, 0);
3391 snd_printk(KERN_ERR
"cannot create card instance %d\n", idx
);
3395 chip
= kzalloc(sizeof(*chip
), GFP_KERNEL
);
3397 snd_card_free(card
);
3404 chip
->usb_id
= USB_ID(le16_to_cpu(dev
->descriptor
.idVendor
),
3405 le16_to_cpu(dev
->descriptor
.idProduct
));
3406 INIT_LIST_HEAD(&chip
->pcm_list
);
3407 INIT_LIST_HEAD(&chip
->midi_list
);
3408 INIT_LIST_HEAD(&chip
->mixer_list
);
3410 if ((err
= snd_device_new(card
, SNDRV_DEV_LOWLEVEL
, chip
, &ops
)) < 0) {
3411 snd_usb_audio_free(chip
);
3412 snd_card_free(card
);
3416 strcpy(card
->driver
, "USB-Audio");
3417 sprintf(component
, "USB%04x:%04x",
3418 USB_ID_VENDOR(chip
->usb_id
), USB_ID_PRODUCT(chip
->usb_id
));
3419 snd_component_add(card
, component
);
3421 /* retrieve the device string as shortname */
3422 if (quirk
&& quirk
->product_name
) {
3423 strlcpy(card
->shortname
, quirk
->product_name
, sizeof(card
->shortname
));
3425 if (!dev
->descriptor
.iProduct
||
3426 usb_string(dev
, dev
->descriptor
.iProduct
,
3427 card
->shortname
, sizeof(card
->shortname
)) <= 0) {
3428 /* no name available from anywhere, so use ID */
3429 sprintf(card
->shortname
, "USB Device %#04x:%#04x",
3430 USB_ID_VENDOR(chip
->usb_id
),
3431 USB_ID_PRODUCT(chip
->usb_id
));
3435 /* retrieve the vendor and device strings as longname */
3436 if (quirk
&& quirk
->vendor_name
) {
3437 len
= strlcpy(card
->longname
, quirk
->vendor_name
, sizeof(card
->longname
));
3439 if (dev
->descriptor
.iManufacturer
)
3440 len
= usb_string(dev
, dev
->descriptor
.iManufacturer
,
3441 card
->longname
, sizeof(card
->longname
));
3444 /* we don't really care if there isn't any vendor string */
3447 strlcat(card
->longname
, " ", sizeof(card
->longname
));
3449 strlcat(card
->longname
, card
->shortname
, sizeof(card
->longname
));
3451 len
= strlcat(card
->longname
, " at ", sizeof(card
->longname
));
3453 if (len
< sizeof(card
->longname
))
3454 usb_make_path(dev
, card
->longname
+ len
, sizeof(card
->longname
) - len
);
3456 strlcat(card
->longname
,
3457 snd_usb_get_speed(dev
) == USB_SPEED_FULL
? ", full speed" : ", high speed",
3458 sizeof(card
->longname
));
3460 snd_usb_audio_create_proc(chip
);
3468 * probe the active usb device
3470 * note that this can be called multiple times per a device, when it
3471 * includes multiple audio control interfaces.
3473 * thus we check the usb device pointer and creates the card instance
3474 * only at the first time. the successive calls of this function will
3475 * append the pcm interface to the corresponding card.
3477 static void *snd_usb_audio_probe(struct usb_device
*dev
,
3478 struct usb_interface
*intf
,
3479 const struct usb_device_id
*usb_id
)
3481 const struct snd_usb_audio_quirk
*quirk
= (const struct snd_usb_audio_quirk
*)usb_id
->driver_info
;
3483 struct snd_usb_audio
*chip
;
3484 struct usb_host_interface
*alts
;
3488 alts
= &intf
->altsetting
[0];
3489 ifnum
= get_iface_desc(alts
)->bInterfaceNumber
;
3490 id
= USB_ID(le16_to_cpu(dev
->descriptor
.idVendor
),
3491 le16_to_cpu(dev
->descriptor
.idProduct
));
3493 if (quirk
&& quirk
->ifnum
>= 0 && ifnum
!= quirk
->ifnum
)
3496 /* SB Extigy needs special boot-up sequence */
3497 /* if more models come, this will go to the quirk list. */
3498 if (id
== USB_ID(0x041e, 0x3000)) {
3499 if (snd_usb_extigy_boot_quirk(dev
, intf
) < 0)
3502 /* SB Audigy 2 NX needs its own boot-up magic, too */
3503 if (id
== USB_ID(0x041e, 0x3020)) {
3504 if (snd_usb_audigy2nx_boot_quirk(dev
) < 0)
3508 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
3509 if (id
== USB_ID(0x10f5, 0x0200)) {
3510 if (snd_usb_cm106_boot_quirk(dev
) < 0)
3515 * found a config. now register to ALSA
3518 /* check whether it's already registered */
3520 mutex_lock(®ister_mutex
);
3521 for (i
= 0; i
< SNDRV_CARDS
; i
++) {
3522 if (usb_chip
[i
] && usb_chip
[i
]->dev
== dev
) {
3523 if (usb_chip
[i
]->shutdown
) {
3524 snd_printk(KERN_ERR
"USB device is in the shutdown state, cannot create a card instance\n");
3532 /* it's a fresh one.
3533 * now look for an empty slot and create a new card instance
3535 for (i
= 0; i
< SNDRV_CARDS
; i
++)
3536 if (enable
[i
] && ! usb_chip
[i
] &&
3537 (vid
[i
] == -1 || vid
[i
] == USB_ID_VENDOR(id
)) &&
3538 (pid
[i
] == -1 || pid
[i
] == USB_ID_PRODUCT(id
))) {
3539 if (snd_usb_audio_create(dev
, i
, quirk
, &chip
) < 0) {
3542 snd_card_set_dev(chip
->card
, &intf
->dev
);
3546 snd_printk(KERN_ERR
"no available usb audio device\n");
3551 err
= 1; /* continue */
3552 if (quirk
&& quirk
->ifnum
!= QUIRK_NO_INTERFACE
) {
3553 /* need some special handlings */
3554 if ((err
= snd_usb_create_quirk(chip
, intf
, quirk
)) < 0)
3559 /* create normal USB audio interfaces */
3560 if (snd_usb_create_streams(chip
, ifnum
) < 0 ||
3561 snd_usb_create_mixer(chip
, ifnum
) < 0) {
3566 /* we are allowed to call snd_card_register() many times */
3567 if (snd_card_register(chip
->card
) < 0) {
3571 usb_chip
[chip
->index
] = chip
;
3572 chip
->num_interfaces
++;
3573 mutex_unlock(®ister_mutex
);
3577 if (chip
&& !chip
->num_interfaces
)
3578 snd_card_free(chip
->card
);
3579 mutex_unlock(®ister_mutex
);
3585 * we need to take care of counter, since disconnection can be called also
3586 * many times as well as usb_audio_probe().
3588 static void snd_usb_audio_disconnect(struct usb_device
*dev
, void *ptr
)
3590 struct snd_usb_audio
*chip
;
3591 struct snd_card
*card
;
3592 struct list_head
*p
;
3594 if (ptr
== (void *)-1L)
3599 mutex_lock(®ister_mutex
);
3601 chip
->num_interfaces
--;
3602 if (chip
->num_interfaces
<= 0) {
3603 snd_card_disconnect(card
);
3604 /* release the pcm resources */
3605 list_for_each(p
, &chip
->pcm_list
) {
3606 snd_usb_stream_disconnect(p
);
3608 /* release the midi resources */
3609 list_for_each(p
, &chip
->midi_list
) {
3610 snd_usbmidi_disconnect(p
);
3612 /* release mixer resources */
3613 list_for_each(p
, &chip
->mixer_list
) {
3614 snd_usb_mixer_disconnect(p
);
3616 mutex_unlock(®ister_mutex
);
3617 snd_card_free_when_closed(card
);
3619 mutex_unlock(®ister_mutex
);
3624 * new 2.5 USB kernel API
3626 static int usb_audio_probe(struct usb_interface
*intf
,
3627 const struct usb_device_id
*id
)
3630 chip
= snd_usb_audio_probe(interface_to_usbdev(intf
), intf
, id
);
3632 dev_set_drvdata(&intf
->dev
, chip
);
3638 static void usb_audio_disconnect(struct usb_interface
*intf
)
3640 snd_usb_audio_disconnect(interface_to_usbdev(intf
),
3641 dev_get_drvdata(&intf
->dev
));
3645 static int __init
snd_usb_audio_init(void)
3647 if (nrpacks
< MIN_PACKS_URB
|| nrpacks
> MAX_PACKS
) {
3648 printk(KERN_WARNING
"invalid nrpacks value.\n");
3651 return usb_register(&usb_audio_driver
);
3655 static void __exit
snd_usb_audio_cleanup(void)
3657 usb_deregister(&usb_audio_driver
);
3660 module_init(snd_usb_audio_init
);
3661 module_exit(snd_usb_audio_cleanup
);