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 <linux/bitops.h>
42 #include <linux/init.h>
43 #include <linux/list.h>
44 #include <linux/slab.h>
45 #include <linux/string.h>
46 #include <linux/usb.h>
47 #include <linux/vmalloc.h>
48 #include <linux/moduleparam.h>
49 #include <linux/mutex.h>
50 #include <sound/core.h>
51 #include <sound/info.h>
52 #include <sound/pcm.h>
53 #include <sound/pcm_params.h>
54 #include <sound/initval.h>
59 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
60 MODULE_DESCRIPTION("USB Audio");
61 MODULE_LICENSE("GPL");
62 MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
65 static int index
[SNDRV_CARDS
] = SNDRV_DEFAULT_IDX
; /* Index 0-MAX */
66 static char *id
[SNDRV_CARDS
] = SNDRV_DEFAULT_STR
; /* ID for this card */
67 static int enable
[SNDRV_CARDS
] = SNDRV_DEFAULT_ENABLE_PNP
;/* Enable this card */
68 /* Vendor/product IDs for this card */
69 static int vid
[SNDRV_CARDS
] = { [0 ... (SNDRV_CARDS
-1)] = -1 };
70 static int pid
[SNDRV_CARDS
] = { [0 ... (SNDRV_CARDS
-1)] = -1 };
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*/
74 static int ignore_ctl_error
;
76 module_param_array(index
, int, NULL
, 0444);
77 MODULE_PARM_DESC(index
, "Index value for the USB audio adapter.");
78 module_param_array(id
, charp
, NULL
, 0444);
79 MODULE_PARM_DESC(id
, "ID string for the USB audio adapter.");
80 module_param_array(enable
, bool, NULL
, 0444);
81 MODULE_PARM_DESC(enable
, "Enable USB audio adapter.");
82 module_param_array(vid
, int, NULL
, 0444);
83 MODULE_PARM_DESC(vid
, "Vendor ID for the USB audio device.");
84 module_param_array(pid
, int, NULL
, 0444);
85 MODULE_PARM_DESC(pid
, "Product ID for the USB audio device.");
86 module_param(nrpacks
, int, 0644);
87 MODULE_PARM_DESC(nrpacks
, "Max. number of packets per URB.");
88 module_param(async_unlink
, bool, 0444);
89 MODULE_PARM_DESC(async_unlink
, "Use async unlink mode.");
90 module_param_array(device_setup
, int, NULL
, 0444);
91 MODULE_PARM_DESC(device_setup
, "Specific device setup (if needed).");
92 module_param(ignore_ctl_error
, bool, 0444);
93 MODULE_PARM_DESC(ignore_ctl_error
,
94 "Ignore errors from USB controller for mixer interfaces.");
97 * debug the h/w constraints
99 /* #define HW_CONST_DEBUG */
107 #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
109 #define SYNC_URBS 4 /* always four urbs for sync */
110 #define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */
113 struct list_head list
;
114 snd_pcm_format_t format
; /* format type */
115 unsigned int channels
; /* # channels */
116 unsigned int fmt_type
; /* USB audio format type (1-3) */
117 unsigned int frame_size
; /* samples per frame for non-audio */
118 int iface
; /* interface number */
119 unsigned char altsetting
; /* corresponding alternate setting */
120 unsigned char altset_idx
; /* array index of altenate setting */
121 unsigned char attributes
; /* corresponding attributes of cs endpoint */
122 unsigned char endpoint
; /* endpoint */
123 unsigned char ep_attr
; /* endpoint attributes */
124 unsigned char datainterval
; /* log_2 of data packet interval */
125 unsigned int maxpacksize
; /* max. packet size */
126 unsigned int rates
; /* rate bitmasks */
127 unsigned int rate_min
, rate_max
; /* min/max rates */
128 unsigned int nr_rates
; /* number of rate table entries */
129 unsigned int *rate_table
; /* rate table */
132 struct snd_usb_substream
;
136 unsigned int buffer_size
; /* size of data buffer, if data URB */
137 struct snd_usb_substream
*subs
;
138 int index
; /* index for urb array */
139 int packets
; /* number of packets per urb */
143 int (*prepare
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
144 int (*retire
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
145 int (*prepare_sync
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
146 int (*retire_sync
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
149 struct snd_usb_substream
{
150 struct snd_usb_stream
*stream
;
151 struct usb_device
*dev
;
152 struct snd_pcm_substream
*pcm_substream
;
153 int direction
; /* playback or capture */
154 int interface
; /* current interface */
155 int endpoint
; /* assigned endpoint */
156 struct audioformat
*cur_audiofmt
; /* current audioformat pointer (for hw_params callback) */
157 unsigned int cur_rate
; /* current rate (for hw_params callback) */
158 unsigned int period_bytes
; /* current period bytes (for hw_params callback) */
159 unsigned int format
; /* USB data format */
160 unsigned int datapipe
; /* the data i/o pipe */
161 unsigned int syncpipe
; /* 1 - async out or adaptive in */
162 unsigned int datainterval
; /* log_2 of data packet interval */
163 unsigned int syncinterval
; /* P for adaptive mode, 0 otherwise */
164 unsigned int freqn
; /* nominal sampling rate in fs/fps in Q16.16 format */
165 unsigned int freqm
; /* momentary sampling rate in fs/fps in Q16.16 format */
166 unsigned int freqmax
; /* maximum sampling rate, used for buffer management */
167 unsigned int phase
; /* phase accumulator */
168 unsigned int maxpacksize
; /* max packet size in bytes */
169 unsigned int maxframesize
; /* max packet size in frames */
170 unsigned int curpacksize
; /* current packet size in bytes (for capture) */
171 unsigned int curframesize
; /* current packet size in frames (for capture) */
172 unsigned int fill_max
: 1; /* fill max packet size always */
173 unsigned int fmt_type
; /* USB audio format type (1-3) */
175 unsigned int running
: 1; /* running status */
177 unsigned int hwptr_done
; /* processed frame position in the buffer */
178 unsigned int transfer_done
; /* processed frames since last period update */
179 unsigned long active_mask
; /* bitmask of active urbs */
180 unsigned long unlink_mask
; /* bitmask of unlinked urbs */
182 unsigned int nurbs
; /* # urbs */
183 struct snd_urb_ctx dataurb
[MAX_URBS
]; /* data urb table */
184 struct snd_urb_ctx syncurb
[SYNC_URBS
]; /* sync urb table */
185 char *syncbuf
; /* sync buffer for all sync URBs */
186 dma_addr_t sync_dma
; /* DMA address of syncbuf */
188 u64 formats
; /* format bitmasks (all or'ed) */
189 unsigned int num_formats
; /* number of supported audio formats (list) */
190 struct list_head fmt_list
; /* format list */
191 struct snd_pcm_hw_constraint_list rate_list
; /* limited rates */
194 struct snd_urb_ops ops
; /* callbacks (must be filled at init) */
198 struct snd_usb_stream
{
199 struct snd_usb_audio
*chip
;
202 unsigned int fmt_type
; /* USB audio format type (1-3) */
203 struct snd_usb_substream substream
[2];
204 struct list_head list
;
209 * we keep the snd_usb_audio_t instances by ourselves for merging
210 * the all interfaces on the same card as one sound device.
213 static DEFINE_MUTEX(register_mutex
);
214 static struct snd_usb_audio
*usb_chip
[SNDRV_CARDS
];
218 * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
219 * this will overflow at approx 524 kHz
221 static inline unsigned get_usb_full_speed_rate(unsigned int rate
)
223 return ((rate
<< 13) + 62) / 125;
227 * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
228 * this will overflow at approx 4 MHz
230 static inline unsigned get_usb_high_speed_rate(unsigned int rate
)
232 return ((rate
<< 10) + 62) / 125;
235 /* convert our full speed USB rate into sampling rate in Hz */
236 static inline unsigned get_full_speed_hz(unsigned int usb_rate
)
238 return (usb_rate
* 125 + (1 << 12)) >> 13;
241 /* convert our high speed USB rate into sampling rate in Hz */
242 static inline unsigned get_high_speed_hz(unsigned int usb_rate
)
244 return (usb_rate
* 125 + (1 << 9)) >> 10;
249 * prepare urb for full speed capture sync pipe
251 * fill the length and offset of each urb descriptor.
252 * the fixed 10.14 frequency is passed through the pipe.
254 static int prepare_capture_sync_urb(struct snd_usb_substream
*subs
,
255 struct snd_pcm_runtime
*runtime
,
258 unsigned char *cp
= urb
->transfer_buffer
;
259 struct snd_urb_ctx
*ctx
= urb
->context
;
261 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
262 urb
->iso_frame_desc
[0].length
= 3;
263 urb
->iso_frame_desc
[0].offset
= 0;
264 cp
[0] = subs
->freqn
>> 2;
265 cp
[1] = subs
->freqn
>> 10;
266 cp
[2] = subs
->freqn
>> 18;
271 * prepare urb for high speed capture sync pipe
273 * fill the length and offset of each urb descriptor.
274 * the fixed 12.13 frequency is passed as 16.16 through the pipe.
276 static int prepare_capture_sync_urb_hs(struct snd_usb_substream
*subs
,
277 struct snd_pcm_runtime
*runtime
,
280 unsigned char *cp
= urb
->transfer_buffer
;
281 struct snd_urb_ctx
*ctx
= urb
->context
;
283 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
284 urb
->iso_frame_desc
[0].length
= 4;
285 urb
->iso_frame_desc
[0].offset
= 0;
287 cp
[1] = subs
->freqn
>> 8;
288 cp
[2] = subs
->freqn
>> 16;
289 cp
[3] = subs
->freqn
>> 24;
294 * process after capture sync complete
297 static int retire_capture_sync_urb(struct snd_usb_substream
*subs
,
298 struct snd_pcm_runtime
*runtime
,
305 * prepare urb for capture data pipe
307 * fill the offset and length of each descriptor.
309 * we use a temporary buffer to write the captured data.
310 * since the length of written data is determined by host, we cannot
311 * write onto the pcm buffer directly... the data is thus copied
312 * later at complete callback to the global buffer.
314 static int prepare_capture_urb(struct snd_usb_substream
*subs
,
315 struct snd_pcm_runtime
*runtime
,
319 struct snd_urb_ctx
*ctx
= urb
->context
;
322 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
323 for (i
= 0; i
< ctx
->packets
; i
++) {
324 urb
->iso_frame_desc
[i
].offset
= offs
;
325 urb
->iso_frame_desc
[i
].length
= subs
->curpacksize
;
326 offs
+= subs
->curpacksize
;
328 urb
->transfer_buffer_length
= offs
;
329 urb
->number_of_packets
= ctx
->packets
;
334 * process after capture complete
336 * copy the data from each desctiptor to the pcm buffer, and
337 * update the current position.
339 static int retire_capture_urb(struct snd_usb_substream
*subs
,
340 struct snd_pcm_runtime
*runtime
,
346 unsigned int stride
, len
, oldptr
;
347 int period_elapsed
= 0;
349 stride
= runtime
->frame_bits
>> 3;
351 for (i
= 0; i
< urb
->number_of_packets
; i
++) {
352 cp
= (unsigned char *)urb
->transfer_buffer
+ urb
->iso_frame_desc
[i
].offset
;
353 if (urb
->iso_frame_desc
[i
].status
) {
354 snd_printd(KERN_ERR
"frame %d active: %d\n", i
, urb
->iso_frame_desc
[i
].status
);
357 len
= urb
->iso_frame_desc
[i
].actual_length
/ stride
;
360 /* update the current pointer */
361 spin_lock_irqsave(&subs
->lock
, flags
);
362 oldptr
= subs
->hwptr_done
;
363 subs
->hwptr_done
+= len
;
364 if (subs
->hwptr_done
>= runtime
->buffer_size
)
365 subs
->hwptr_done
-= runtime
->buffer_size
;
366 subs
->transfer_done
+= len
;
367 if (subs
->transfer_done
>= runtime
->period_size
) {
368 subs
->transfer_done
-= runtime
->period_size
;
371 spin_unlock_irqrestore(&subs
->lock
, flags
);
372 /* copy a data chunk */
373 if (oldptr
+ len
> runtime
->buffer_size
) {
374 unsigned int cnt
= runtime
->buffer_size
- oldptr
;
375 unsigned int blen
= cnt
* stride
;
376 memcpy(runtime
->dma_area
+ oldptr
* stride
, cp
, blen
);
377 memcpy(runtime
->dma_area
, cp
+ blen
, len
* stride
- blen
);
379 memcpy(runtime
->dma_area
+ oldptr
* stride
, cp
, len
* stride
);
383 snd_pcm_period_elapsed(subs
->pcm_substream
);
388 * Process after capture complete when paused. Nothing to do.
390 static int retire_paused_capture_urb(struct snd_usb_substream
*subs
,
391 struct snd_pcm_runtime
*runtime
,
399 * prepare urb for full speed playback sync pipe
401 * set up the offset and length to receive the current frequency.
404 static int prepare_playback_sync_urb(struct snd_usb_substream
*subs
,
405 struct snd_pcm_runtime
*runtime
,
408 struct snd_urb_ctx
*ctx
= urb
->context
;
410 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
411 urb
->iso_frame_desc
[0].length
= 3;
412 urb
->iso_frame_desc
[0].offset
= 0;
417 * prepare urb for high speed playback sync pipe
419 * set up the offset and length to receive the current frequency.
422 static int prepare_playback_sync_urb_hs(struct snd_usb_substream
*subs
,
423 struct snd_pcm_runtime
*runtime
,
426 struct snd_urb_ctx
*ctx
= urb
->context
;
428 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
429 urb
->iso_frame_desc
[0].length
= 4;
430 urb
->iso_frame_desc
[0].offset
= 0;
435 * process after full speed playback sync complete
437 * retrieve the current 10.14 frequency from pipe, and set it.
438 * the value is referred in prepare_playback_urb().
440 static int retire_playback_sync_urb(struct snd_usb_substream
*subs
,
441 struct snd_pcm_runtime
*runtime
,
447 if (urb
->iso_frame_desc
[0].status
== 0 &&
448 urb
->iso_frame_desc
[0].actual_length
== 3) {
449 f
= combine_triple((u8
*)urb
->transfer_buffer
) << 2;
450 if (f
>= subs
->freqn
- subs
->freqn
/ 8 && f
<= subs
->freqmax
) {
451 spin_lock_irqsave(&subs
->lock
, flags
);
453 spin_unlock_irqrestore(&subs
->lock
, flags
);
461 * process after high speed playback sync complete
463 * retrieve the current 12.13 frequency from pipe, and set it.
464 * the value is referred in prepare_playback_urb().
466 static int retire_playback_sync_urb_hs(struct snd_usb_substream
*subs
,
467 struct snd_pcm_runtime
*runtime
,
473 if (urb
->iso_frame_desc
[0].status
== 0 &&
474 urb
->iso_frame_desc
[0].actual_length
== 4) {
475 f
= combine_quad((u8
*)urb
->transfer_buffer
) & 0x0fffffff;
476 if (f
>= subs
->freqn
- subs
->freqn
/ 8 && f
<= subs
->freqmax
) {
477 spin_lock_irqsave(&subs
->lock
, flags
);
479 spin_unlock_irqrestore(&subs
->lock
, flags
);
487 * process after E-Mu 0202/0404/Tracker Pre high speed playback sync complete
489 * These devices return the number of samples per packet instead of the number
490 * of samples per microframe.
492 static int retire_playback_sync_urb_hs_emu(struct snd_usb_substream
*subs
,
493 struct snd_pcm_runtime
*runtime
,
499 if (urb
->iso_frame_desc
[0].status
== 0 &&
500 urb
->iso_frame_desc
[0].actual_length
== 4) {
501 f
= combine_quad((u8
*)urb
->transfer_buffer
) & 0x0fffffff;
502 f
>>= subs
->datainterval
;
503 if (f
>= subs
->freqn
- subs
->freqn
/ 8 && f
<= subs
->freqmax
) {
504 spin_lock_irqsave(&subs
->lock
, flags
);
506 spin_unlock_irqrestore(&subs
->lock
, flags
);
513 /* determine the number of frames in the next packet */
514 static int snd_usb_audio_next_packet_size(struct snd_usb_substream
*subs
)
517 return subs
->maxframesize
;
519 subs
->phase
= (subs
->phase
& 0xffff)
520 + (subs
->freqm
<< subs
->datainterval
);
521 return min(subs
->phase
>> 16, subs
->maxframesize
);
526 * Prepare urb for streaming before playback starts or when paused.
528 * We don't have any data, so we send silence.
530 static int prepare_nodata_playback_urb(struct snd_usb_substream
*subs
,
531 struct snd_pcm_runtime
*runtime
,
534 unsigned int i
, offs
, counts
;
535 struct snd_urb_ctx
*ctx
= urb
->context
;
536 int stride
= runtime
->frame_bits
>> 3;
539 urb
->dev
= ctx
->subs
->dev
;
540 for (i
= 0; i
< ctx
->packets
; ++i
) {
541 counts
= snd_usb_audio_next_packet_size(subs
);
542 urb
->iso_frame_desc
[i
].offset
= offs
* stride
;
543 urb
->iso_frame_desc
[i
].length
= counts
* stride
;
546 urb
->number_of_packets
= ctx
->packets
;
547 urb
->transfer_buffer_length
= offs
* stride
;
548 memset(urb
->transfer_buffer
,
549 subs
->cur_audiofmt
->format
== SNDRV_PCM_FORMAT_U8
? 0x80 : 0,
555 * prepare urb for playback data pipe
557 * Since a URB can handle only a single linear buffer, we must use double
558 * buffering when the data to be transferred overflows the buffer boundary.
559 * To avoid inconsistencies when updating hwptr_done, we use double buffering
562 static int prepare_playback_urb(struct snd_usb_substream
*subs
,
563 struct snd_pcm_runtime
*runtime
,
569 int period_elapsed
= 0;
570 struct snd_urb_ctx
*ctx
= urb
->context
;
572 stride
= runtime
->frame_bits
>> 3;
575 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
576 urb
->number_of_packets
= 0;
577 spin_lock_irqsave(&subs
->lock
, flags
);
578 for (i
= 0; i
< ctx
->packets
; i
++) {
579 counts
= snd_usb_audio_next_packet_size(subs
);
580 /* set up descriptor */
581 urb
->iso_frame_desc
[i
].offset
= offs
* stride
;
582 urb
->iso_frame_desc
[i
].length
= counts
* stride
;
584 urb
->number_of_packets
++;
585 subs
->transfer_done
+= counts
;
586 if (subs
->transfer_done
>= runtime
->period_size
) {
587 subs
->transfer_done
-= runtime
->period_size
;
589 if (subs
->fmt_type
== USB_FORMAT_TYPE_II
) {
590 if (subs
->transfer_done
> 0) {
591 /* FIXME: fill-max mode is not
593 offs
-= subs
->transfer_done
;
594 counts
-= subs
->transfer_done
;
595 urb
->iso_frame_desc
[i
].length
=
597 subs
->transfer_done
= 0;
600 if (i
< ctx
->packets
) {
601 /* add a transfer delimiter */
602 urb
->iso_frame_desc
[i
].offset
=
604 urb
->iso_frame_desc
[i
].length
= 0;
605 urb
->number_of_packets
++;
610 if (period_elapsed
) /* finish at the period boundary */
613 if (subs
->hwptr_done
+ offs
> runtime
->buffer_size
) {
614 /* err, the transferred area goes over buffer boundary. */
615 unsigned int len
= runtime
->buffer_size
- subs
->hwptr_done
;
616 memcpy(urb
->transfer_buffer
,
617 runtime
->dma_area
+ subs
->hwptr_done
* stride
,
619 memcpy(urb
->transfer_buffer
+ len
* stride
,
621 (offs
- len
) * stride
);
623 memcpy(urb
->transfer_buffer
,
624 runtime
->dma_area
+ subs
->hwptr_done
* stride
,
627 subs
->hwptr_done
+= offs
;
628 if (subs
->hwptr_done
>= runtime
->buffer_size
)
629 subs
->hwptr_done
-= runtime
->buffer_size
;
630 runtime
->delay
+= offs
;
631 spin_unlock_irqrestore(&subs
->lock
, flags
);
632 urb
->transfer_buffer_length
= offs
* stride
;
634 snd_pcm_period_elapsed(subs
->pcm_substream
);
639 * process after playback data complete
640 * - decrease the delay count again
642 static int retire_playback_urb(struct snd_usb_substream
*subs
,
643 struct snd_pcm_runtime
*runtime
,
647 int stride
= runtime
->frame_bits
>> 3;
648 int processed
= urb
->transfer_buffer_length
/ stride
;
650 spin_lock_irqsave(&subs
->lock
, flags
);
651 if (processed
> runtime
->delay
)
654 runtime
->delay
-= processed
;
655 spin_unlock_irqrestore(&subs
->lock
, flags
);
662 static struct snd_urb_ops audio_urb_ops
[2] = {
664 .prepare
= prepare_nodata_playback_urb
,
665 .retire
= retire_playback_urb
,
666 .prepare_sync
= prepare_playback_sync_urb
,
667 .retire_sync
= retire_playback_sync_urb
,
670 .prepare
= prepare_capture_urb
,
671 .retire
= retire_capture_urb
,
672 .prepare_sync
= prepare_capture_sync_urb
,
673 .retire_sync
= retire_capture_sync_urb
,
677 static struct snd_urb_ops audio_urb_ops_high_speed
[2] = {
679 .prepare
= prepare_nodata_playback_urb
,
680 .retire
= retire_playback_urb
,
681 .prepare_sync
= prepare_playback_sync_urb_hs
,
682 .retire_sync
= retire_playback_sync_urb_hs
,
685 .prepare
= prepare_capture_urb
,
686 .retire
= retire_capture_urb
,
687 .prepare_sync
= prepare_capture_sync_urb_hs
,
688 .retire_sync
= retire_capture_sync_urb
,
693 * complete callback from data urb
695 static void snd_complete_urb(struct urb
*urb
)
697 struct snd_urb_ctx
*ctx
= urb
->context
;
698 struct snd_usb_substream
*subs
= ctx
->subs
;
699 struct snd_pcm_substream
*substream
= ctx
->subs
->pcm_substream
;
702 if ((subs
->running
&& subs
->ops
.retire(subs
, substream
->runtime
, urb
)) ||
703 !subs
->running
|| /* can be stopped during retire callback */
704 (err
= subs
->ops
.prepare(subs
, substream
->runtime
, urb
)) < 0 ||
705 (err
= usb_submit_urb(urb
, GFP_ATOMIC
)) < 0) {
706 clear_bit(ctx
->index
, &subs
->active_mask
);
708 snd_printd(KERN_ERR
"cannot submit urb (err = %d)\n", err
);
709 snd_pcm_stop(substream
, SNDRV_PCM_STATE_XRUN
);
716 * complete callback from sync urb
718 static void snd_complete_sync_urb(struct urb
*urb
)
720 struct snd_urb_ctx
*ctx
= urb
->context
;
721 struct snd_usb_substream
*subs
= ctx
->subs
;
722 struct snd_pcm_substream
*substream
= ctx
->subs
->pcm_substream
;
725 if ((subs
->running
&& subs
->ops
.retire_sync(subs
, substream
->runtime
, urb
)) ||
726 !subs
->running
|| /* can be stopped during retire callback */
727 (err
= subs
->ops
.prepare_sync(subs
, substream
->runtime
, urb
)) < 0 ||
728 (err
= usb_submit_urb(urb
, GFP_ATOMIC
)) < 0) {
729 clear_bit(ctx
->index
+ 16, &subs
->active_mask
);
731 snd_printd(KERN_ERR
"cannot submit sync urb (err = %d)\n", err
);
732 snd_pcm_stop(substream
, SNDRV_PCM_STATE_XRUN
);
738 /* get the physical page pointer at the given offset */
739 static struct page
*snd_pcm_get_vmalloc_page(struct snd_pcm_substream
*subs
,
740 unsigned long offset
)
742 void *pageptr
= subs
->runtime
->dma_area
+ offset
;
743 return vmalloc_to_page(pageptr
);
746 /* allocate virtual buffer; may be called more than once */
747 static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream
*subs
, size_t size
)
749 struct snd_pcm_runtime
*runtime
= subs
->runtime
;
750 if (runtime
->dma_area
) {
751 if (runtime
->dma_bytes
>= size
)
752 return 0; /* already large enough */
753 vfree(runtime
->dma_area
);
755 runtime
->dma_area
= vmalloc(size
);
756 if (!runtime
->dma_area
)
758 runtime
->dma_bytes
= size
;
762 /* free virtual buffer; may be called more than once */
763 static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream
*subs
)
765 struct snd_pcm_runtime
*runtime
= subs
->runtime
;
767 vfree(runtime
->dma_area
);
768 runtime
->dma_area
= NULL
;
774 * unlink active urbs.
776 static int deactivate_urbs(struct snd_usb_substream
*subs
, int force
, int can_sleep
)
783 if (!force
&& subs
->stream
->chip
->shutdown
) /* to be sure... */
786 async
= !can_sleep
&& async_unlink
;
788 if (!async
&& in_interrupt())
791 for (i
= 0; i
< subs
->nurbs
; i
++) {
792 if (test_bit(i
, &subs
->active_mask
)) {
793 if (!test_and_set_bit(i
, &subs
->unlink_mask
)) {
794 struct urb
*u
= subs
->dataurb
[i
].urb
;
802 if (subs
->syncpipe
) {
803 for (i
= 0; i
< SYNC_URBS
; i
++) {
804 if (test_bit(i
+16, &subs
->active_mask
)) {
805 if (!test_and_set_bit(i
+16, &subs
->unlink_mask
)) {
806 struct urb
*u
= subs
->syncurb
[i
].urb
;
819 static const char *usb_error_string(int err
)
825 return "endpoint not enabled";
827 return "endpoint stalled";
829 return "not enough bandwidth";
831 return "device disabled";
833 return "device suspended";
838 return "internal error";
840 return "unknown error";
845 * set up and start data/sync urbs
847 static int start_urbs(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
)
852 if (subs
->stream
->chip
->shutdown
)
855 for (i
= 0; i
< subs
->nurbs
; i
++) {
856 if (snd_BUG_ON(!subs
->dataurb
[i
].urb
))
858 if (subs
->ops
.prepare(subs
, runtime
, subs
->dataurb
[i
].urb
) < 0) {
859 snd_printk(KERN_ERR
"cannot prepare datapipe for urb %d\n", i
);
863 if (subs
->syncpipe
) {
864 for (i
= 0; i
< SYNC_URBS
; i
++) {
865 if (snd_BUG_ON(!subs
->syncurb
[i
].urb
))
867 if (subs
->ops
.prepare_sync(subs
, runtime
, subs
->syncurb
[i
].urb
) < 0) {
868 snd_printk(KERN_ERR
"cannot prepare syncpipe for urb %d\n", i
);
874 subs
->active_mask
= 0;
875 subs
->unlink_mask
= 0;
877 for (i
= 0; i
< subs
->nurbs
; i
++) {
878 err
= usb_submit_urb(subs
->dataurb
[i
].urb
, GFP_ATOMIC
);
880 snd_printk(KERN_ERR
"cannot submit datapipe "
881 "for urb %d, error %d: %s\n",
882 i
, err
, usb_error_string(err
));
885 set_bit(i
, &subs
->active_mask
);
887 if (subs
->syncpipe
) {
888 for (i
= 0; i
< SYNC_URBS
; i
++) {
889 err
= usb_submit_urb(subs
->syncurb
[i
].urb
, GFP_ATOMIC
);
891 snd_printk(KERN_ERR
"cannot submit syncpipe "
892 "for urb %d, error %d: %s\n",
893 i
, err
, usb_error_string(err
));
896 set_bit(i
+ 16, &subs
->active_mask
);
902 // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
903 deactivate_urbs(subs
, 0, 0);
909 * wait until all urbs are processed.
911 static int wait_clear_urbs(struct snd_usb_substream
*subs
)
913 unsigned long end_time
= jiffies
+ msecs_to_jiffies(1000);
919 for (i
= 0; i
< subs
->nurbs
; i
++) {
920 if (test_bit(i
, &subs
->active_mask
))
923 if (subs
->syncpipe
) {
924 for (i
= 0; i
< SYNC_URBS
; i
++) {
925 if (test_bit(i
+ 16, &subs
->active_mask
))
931 schedule_timeout_uninterruptible(1);
932 } while (time_before(jiffies
, end_time
));
934 snd_printk(KERN_ERR
"timeout: still %d active urbs..\n", alive
);
940 * return the current pcm pointer. just return the hwptr_done value.
942 static snd_pcm_uframes_t
snd_usb_pcm_pointer(struct snd_pcm_substream
*substream
)
944 struct snd_usb_substream
*subs
;
945 snd_pcm_uframes_t hwptr_done
;
947 subs
= (struct snd_usb_substream
*)substream
->runtime
->private_data
;
948 spin_lock(&subs
->lock
);
949 hwptr_done
= subs
->hwptr_done
;
950 spin_unlock(&subs
->lock
);
956 * start/stop playback substream
958 static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream
*substream
,
961 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
964 case SNDRV_PCM_TRIGGER_START
:
965 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
966 subs
->ops
.prepare
= prepare_playback_urb
;
968 case SNDRV_PCM_TRIGGER_STOP
:
969 return deactivate_urbs(subs
, 0, 0);
970 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
971 subs
->ops
.prepare
= prepare_nodata_playback_urb
;
979 * start/stop capture substream
981 static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream
*substream
,
984 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
987 case SNDRV_PCM_TRIGGER_START
:
988 subs
->ops
.retire
= retire_capture_urb
;
989 return start_urbs(subs
, substream
->runtime
);
990 case SNDRV_PCM_TRIGGER_STOP
:
991 return deactivate_urbs(subs
, 0, 0);
992 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
993 subs
->ops
.retire
= retire_paused_capture_urb
;
995 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
996 subs
->ops
.retire
= retire_capture_urb
;
1005 * release a urb data
1007 static void release_urb_ctx(struct snd_urb_ctx
*u
)
1011 usb_buffer_free(u
->subs
->dev
, u
->buffer_size
,
1012 u
->urb
->transfer_buffer
,
1013 u
->urb
->transfer_dma
);
1014 usb_free_urb(u
->urb
);
1020 * release a substream
1022 static void release_substream_urbs(struct snd_usb_substream
*subs
, int force
)
1026 /* stop urbs (to be sure) */
1027 deactivate_urbs(subs
, force
, 1);
1028 wait_clear_urbs(subs
);
1030 for (i
= 0; i
< MAX_URBS
; i
++)
1031 release_urb_ctx(&subs
->dataurb
[i
]);
1032 for (i
= 0; i
< SYNC_URBS
; i
++)
1033 release_urb_ctx(&subs
->syncurb
[i
]);
1034 usb_buffer_free(subs
->dev
, SYNC_URBS
* 4,
1035 subs
->syncbuf
, subs
->sync_dma
);
1036 subs
->syncbuf
= NULL
;
1041 * initialize a substream for plaback/capture
1043 static int init_substream_urbs(struct snd_usb_substream
*subs
, unsigned int period_bytes
,
1044 unsigned int rate
, unsigned int frame_bits
)
1046 unsigned int maxsize
, i
;
1047 int is_playback
= subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
;
1048 unsigned int urb_packs
, total_packs
, packs_per_ms
;
1050 /* calculate the frequency in 16.16 format */
1051 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
1052 subs
->freqn
= get_usb_full_speed_rate(rate
);
1054 subs
->freqn
= get_usb_high_speed_rate(rate
);
1055 subs
->freqm
= subs
->freqn
;
1056 /* calculate max. frequency */
1057 if (subs
->maxpacksize
) {
1058 /* whatever fits into a max. size packet */
1059 maxsize
= subs
->maxpacksize
;
1060 subs
->freqmax
= (maxsize
/ (frame_bits
>> 3))
1061 << (16 - subs
->datainterval
);
1063 /* no max. packet size: just take 25% higher than nominal */
1064 subs
->freqmax
= subs
->freqn
+ (subs
->freqn
>> 2);
1065 maxsize
= ((subs
->freqmax
+ 0xffff) * (frame_bits
>> 3))
1066 >> (16 - subs
->datainterval
);
1071 subs
->curpacksize
= subs
->maxpacksize
;
1073 subs
->curpacksize
= maxsize
;
1075 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_HIGH
)
1076 packs_per_ms
= 8 >> subs
->datainterval
;
1081 urb_packs
= max(nrpacks
, 1);
1082 urb_packs
= min(urb_packs
, (unsigned int)MAX_PACKS
);
1085 urb_packs
*= packs_per_ms
;
1087 /* decide how many packets to be used */
1089 unsigned int minsize
, maxpacks
;
1090 /* determine how small a packet can be */
1091 minsize
= (subs
->freqn
>> (16 - subs
->datainterval
))
1092 * (frame_bits
>> 3);
1093 /* with sync from device, assume it can be 12% lower */
1095 minsize
-= minsize
>> 3;
1096 minsize
= max(minsize
, 1u);
1097 total_packs
= (period_bytes
+ minsize
- 1) / minsize
;
1098 /* we need at least two URBs for queueing */
1099 if (total_packs
< 2) {
1102 /* and we don't want too long a queue either */
1103 maxpacks
= max(MAX_QUEUE
* packs_per_ms
, urb_packs
* 2);
1104 total_packs
= min(total_packs
, maxpacks
);
1107 while (urb_packs
> 1 && urb_packs
* maxsize
>= period_bytes
)
1109 total_packs
= MAX_URBS
* urb_packs
;
1111 subs
->nurbs
= (total_packs
+ urb_packs
- 1) / urb_packs
;
1112 if (subs
->nurbs
> MAX_URBS
) {
1114 subs
->nurbs
= MAX_URBS
;
1115 total_packs
= MAX_URBS
* urb_packs
;
1116 } else if (subs
->nurbs
< 2) {
1117 /* too little - we need at least two packets
1118 * to ensure contiguous playback/capture
1123 /* allocate and initialize data urbs */
1124 for (i
= 0; i
< subs
->nurbs
; i
++) {
1125 struct snd_urb_ctx
*u
= &subs
->dataurb
[i
];
1128 u
->packets
= (i
+ 1) * total_packs
/ subs
->nurbs
1129 - i
* total_packs
/ subs
->nurbs
;
1130 u
->buffer_size
= maxsize
* u
->packets
;
1131 if (subs
->fmt_type
== USB_FORMAT_TYPE_II
)
1132 u
->packets
++; /* for transfer delimiter */
1133 u
->urb
= usb_alloc_urb(u
->packets
, GFP_KERNEL
);
1136 u
->urb
->transfer_buffer
=
1137 usb_buffer_alloc(subs
->dev
, u
->buffer_size
, GFP_KERNEL
,
1138 &u
->urb
->transfer_dma
);
1139 if (!u
->urb
->transfer_buffer
)
1141 u
->urb
->pipe
= subs
->datapipe
;
1142 u
->urb
->transfer_flags
= URB_ISO_ASAP
| URB_NO_TRANSFER_DMA_MAP
;
1143 u
->urb
->interval
= 1 << subs
->datainterval
;
1144 u
->urb
->context
= u
;
1145 u
->urb
->complete
= snd_complete_urb
;
1148 if (subs
->syncpipe
) {
1149 /* allocate and initialize sync urbs */
1150 subs
->syncbuf
= usb_buffer_alloc(subs
->dev
, SYNC_URBS
* 4,
1151 GFP_KERNEL
, &subs
->sync_dma
);
1154 for (i
= 0; i
< SYNC_URBS
; i
++) {
1155 struct snd_urb_ctx
*u
= &subs
->syncurb
[i
];
1159 u
->urb
= usb_alloc_urb(1, GFP_KERNEL
);
1162 u
->urb
->transfer_buffer
= subs
->syncbuf
+ i
* 4;
1163 u
->urb
->transfer_dma
= subs
->sync_dma
+ i
* 4;
1164 u
->urb
->transfer_buffer_length
= 4;
1165 u
->urb
->pipe
= subs
->syncpipe
;
1166 u
->urb
->transfer_flags
= URB_ISO_ASAP
|
1167 URB_NO_TRANSFER_DMA_MAP
;
1168 u
->urb
->number_of_packets
= 1;
1169 u
->urb
->interval
= 1 << subs
->syncinterval
;
1170 u
->urb
->context
= u
;
1171 u
->urb
->complete
= snd_complete_sync_urb
;
1177 release_substream_urbs(subs
, 0);
1183 * find a matching audio format
1185 static struct audioformat
*find_format(struct snd_usb_substream
*subs
, unsigned int format
,
1186 unsigned int rate
, unsigned int channels
)
1188 struct list_head
*p
;
1189 struct audioformat
*found
= NULL
;
1190 int cur_attr
= 0, attr
;
1192 list_for_each(p
, &subs
->fmt_list
) {
1193 struct audioformat
*fp
;
1194 fp
= list_entry(p
, struct audioformat
, list
);
1195 if (fp
->format
!= format
|| fp
->channels
!= channels
)
1197 if (rate
< fp
->rate_min
|| rate
> fp
->rate_max
)
1199 if (! (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)) {
1201 for (i
= 0; i
< fp
->nr_rates
; i
++)
1202 if (fp
->rate_table
[i
] == rate
)
1204 if (i
>= fp
->nr_rates
)
1207 attr
= fp
->ep_attr
& EP_ATTR_MASK
;
1213 /* avoid async out and adaptive in if the other method
1214 * supports the same format.
1215 * this is a workaround for the case like
1216 * M-audio audiophile USB.
1218 if (attr
!= cur_attr
) {
1219 if ((attr
== EP_ATTR_ASYNC
&&
1220 subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) ||
1221 (attr
== EP_ATTR_ADAPTIVE
&&
1222 subs
->direction
== SNDRV_PCM_STREAM_CAPTURE
))
1224 if ((cur_attr
== EP_ATTR_ASYNC
&&
1225 subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) ||
1226 (cur_attr
== EP_ATTR_ADAPTIVE
&&
1227 subs
->direction
== SNDRV_PCM_STREAM_CAPTURE
)) {
1233 /* find the format with the largest max. packet size */
1234 if (fp
->maxpacksize
> found
->maxpacksize
) {
1244 * initialize the picth control and sample rate
1246 static int init_usb_pitch(struct usb_device
*dev
, int iface
,
1247 struct usb_host_interface
*alts
,
1248 struct audioformat
*fmt
)
1251 unsigned char data
[1];
1254 ep
= get_endpoint(alts
, 0)->bEndpointAddress
;
1255 /* if endpoint has pitch control, enable it */
1256 if (fmt
->attributes
& EP_CS_ATTR_PITCH_CONTROL
) {
1258 if ((err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), SET_CUR
,
1259 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_OUT
,
1260 PITCH_CONTROL
<< 8, ep
, data
, 1, 1000)) < 0) {
1261 snd_printk(KERN_ERR
"%d:%d:%d: cannot set enable PITCH\n",
1262 dev
->devnum
, iface
, ep
);
1269 static int init_usb_sample_rate(struct usb_device
*dev
, int iface
,
1270 struct usb_host_interface
*alts
,
1271 struct audioformat
*fmt
, int rate
)
1274 unsigned char data
[3];
1277 ep
= get_endpoint(alts
, 0)->bEndpointAddress
;
1278 /* if endpoint has sampling rate control, set it */
1279 if (fmt
->attributes
& EP_CS_ATTR_SAMPLE_RATE
) {
1282 data
[1] = rate
>> 8;
1283 data
[2] = rate
>> 16;
1284 if ((err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), SET_CUR
,
1285 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_OUT
,
1286 SAMPLING_FREQ_CONTROL
<< 8, ep
, data
, 3, 1000)) < 0) {
1287 snd_printk(KERN_ERR
"%d:%d:%d: cannot set freq %d to ep %#x\n",
1288 dev
->devnum
, iface
, fmt
->altsetting
, rate
, ep
);
1291 if ((err
= snd_usb_ctl_msg(dev
, usb_rcvctrlpipe(dev
, 0), GET_CUR
,
1292 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_IN
,
1293 SAMPLING_FREQ_CONTROL
<< 8, ep
, data
, 3, 1000)) < 0) {
1294 snd_printk(KERN_WARNING
"%d:%d:%d: cannot get freq at ep %#x\n",
1295 dev
->devnum
, iface
, fmt
->altsetting
, ep
);
1296 return 0; /* some devices don't support reading */
1298 crate
= data
[0] | (data
[1] << 8) | (data
[2] << 16);
1299 if (crate
!= rate
) {
1300 snd_printd(KERN_WARNING
"current rate %d is different from the runtime rate %d\n", crate
, rate
);
1301 // runtime->rate = crate;
1308 * find a matching format and set up the interface
1310 static int set_format(struct snd_usb_substream
*subs
, struct audioformat
*fmt
)
1312 struct usb_device
*dev
= subs
->dev
;
1313 struct usb_host_interface
*alts
;
1314 struct usb_interface_descriptor
*altsd
;
1315 struct usb_interface
*iface
;
1316 unsigned int ep
, attr
;
1317 int is_playback
= subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
;
1320 iface
= usb_ifnum_to_if(dev
, fmt
->iface
);
1321 if (WARN_ON(!iface
))
1323 alts
= &iface
->altsetting
[fmt
->altset_idx
];
1324 altsd
= get_iface_desc(alts
);
1325 if (WARN_ON(altsd
->bAlternateSetting
!= fmt
->altsetting
))
1328 if (fmt
== subs
->cur_audiofmt
)
1331 /* close the old interface */
1332 if (subs
->interface
>= 0 && subs
->interface
!= fmt
->iface
) {
1333 if (usb_set_interface(subs
->dev
, subs
->interface
, 0) < 0) {
1334 snd_printk(KERN_ERR
"%d:%d:%d: return to setting 0 failed\n",
1335 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1338 subs
->interface
= -1;
1343 if (subs
->interface
!= fmt
->iface
|| subs
->format
!= fmt
->altset_idx
) {
1344 if (usb_set_interface(dev
, fmt
->iface
, fmt
->altsetting
) < 0) {
1345 snd_printk(KERN_ERR
"%d:%d:%d: usb_set_interface failed\n",
1346 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1349 snd_printdd(KERN_INFO
"setting usb interface %d:%d\n", fmt
->iface
, fmt
->altsetting
);
1350 subs
->interface
= fmt
->iface
;
1351 subs
->format
= fmt
->altset_idx
;
1354 /* create a data pipe */
1355 ep
= fmt
->endpoint
& USB_ENDPOINT_NUMBER_MASK
;
1357 subs
->datapipe
= usb_sndisocpipe(dev
, ep
);
1359 subs
->datapipe
= usb_rcvisocpipe(dev
, ep
);
1360 subs
->datainterval
= fmt
->datainterval
;
1361 subs
->syncpipe
= subs
->syncinterval
= 0;
1362 subs
->maxpacksize
= fmt
->maxpacksize
;
1365 /* we need a sync pipe in async OUT or adaptive IN mode */
1366 /* check the number of EP, since some devices have broken
1367 * descriptors which fool us. if it has only one EP,
1368 * assume it as adaptive-out or sync-in.
1370 attr
= fmt
->ep_attr
& EP_ATTR_MASK
;
1371 if (((is_playback
&& attr
== EP_ATTR_ASYNC
) ||
1372 (! is_playback
&& attr
== EP_ATTR_ADAPTIVE
)) &&
1373 altsd
->bNumEndpoints
>= 2) {
1374 /* check sync-pipe endpoint */
1375 /* ... and check descriptor size before accessing bSynchAddress
1376 because there is a version of the SB Audigy 2 NX firmware lacking
1377 the audio fields in the endpoint descriptors */
1378 if ((get_endpoint(alts
, 1)->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) != 0x01 ||
1379 (get_endpoint(alts
, 1)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1380 get_endpoint(alts
, 1)->bSynchAddress
!= 0)) {
1381 snd_printk(KERN_ERR
"%d:%d:%d : invalid synch pipe\n",
1382 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1385 ep
= get_endpoint(alts
, 1)->bEndpointAddress
;
1386 if (get_endpoint(alts
, 0)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1387 (( is_playback
&& ep
!= (unsigned int)(get_endpoint(alts
, 0)->bSynchAddress
| USB_DIR_IN
)) ||
1388 (!is_playback
&& ep
!= (unsigned int)(get_endpoint(alts
, 0)->bSynchAddress
& ~USB_DIR_IN
)))) {
1389 snd_printk(KERN_ERR
"%d:%d:%d : invalid synch pipe\n",
1390 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1393 ep
&= USB_ENDPOINT_NUMBER_MASK
;
1395 subs
->syncpipe
= usb_rcvisocpipe(dev
, ep
);
1397 subs
->syncpipe
= usb_sndisocpipe(dev
, ep
);
1398 if (get_endpoint(alts
, 1)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1399 get_endpoint(alts
, 1)->bRefresh
>= 1 &&
1400 get_endpoint(alts
, 1)->bRefresh
<= 9)
1401 subs
->syncinterval
= get_endpoint(alts
, 1)->bRefresh
;
1402 else if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
1403 subs
->syncinterval
= 1;
1404 else if (get_endpoint(alts
, 1)->bInterval
>= 1 &&
1405 get_endpoint(alts
, 1)->bInterval
<= 16)
1406 subs
->syncinterval
= get_endpoint(alts
, 1)->bInterval
- 1;
1408 subs
->syncinterval
= 3;
1411 /* always fill max packet size */
1412 if (fmt
->attributes
& EP_CS_ATTR_FILL_MAX
)
1415 if ((err
= init_usb_pitch(dev
, subs
->interface
, alts
, fmt
)) < 0)
1418 subs
->cur_audiofmt
= fmt
;
1422 "setting done: format = %d, rate = %d..%d, channels = %d\n",
1423 fmt
->format
, fmt
->rate_min
, fmt
->rate_max
, fmt
->channels
);
1425 " datapipe = 0x%0x, syncpipe = 0x%0x\n",
1426 subs
->datapipe
, subs
->syncpipe
);
1433 * hw_params callback
1435 * allocate a buffer and set the given audio format.
1437 * so far we use a physically linear buffer although packetize transfer
1438 * doesn't need a continuous area.
1439 * if sg buffer is supported on the later version of alsa, we'll follow
1442 static int snd_usb_hw_params(struct snd_pcm_substream
*substream
,
1443 struct snd_pcm_hw_params
*hw_params
)
1445 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
1446 struct audioformat
*fmt
;
1447 unsigned int channels
, rate
, format
;
1450 ret
= snd_pcm_alloc_vmalloc_buffer(substream
,
1451 params_buffer_bytes(hw_params
));
1455 format
= params_format(hw_params
);
1456 rate
= params_rate(hw_params
);
1457 channels
= params_channels(hw_params
);
1458 fmt
= find_format(subs
, format
, rate
, channels
);
1460 snd_printd(KERN_DEBUG
"cannot set format: format = %#x, rate = %d, channels = %d\n",
1461 format
, rate
, channels
);
1465 changed
= subs
->cur_audiofmt
!= fmt
||
1466 subs
->period_bytes
!= params_period_bytes(hw_params
) ||
1467 subs
->cur_rate
!= rate
;
1468 if ((ret
= set_format(subs
, fmt
)) < 0)
1471 if (subs
->cur_rate
!= rate
) {
1472 struct usb_host_interface
*alts
;
1473 struct usb_interface
*iface
;
1474 iface
= usb_ifnum_to_if(subs
->dev
, fmt
->iface
);
1475 alts
= &iface
->altsetting
[fmt
->altset_idx
];
1476 ret
= init_usb_sample_rate(subs
->dev
, subs
->interface
, alts
, fmt
, rate
);
1479 subs
->cur_rate
= rate
;
1483 /* format changed */
1484 release_substream_urbs(subs
, 0);
1485 /* influenced: period_bytes, channels, rate, format, */
1486 ret
= init_substream_urbs(subs
, params_period_bytes(hw_params
),
1487 params_rate(hw_params
),
1488 snd_pcm_format_physical_width(params_format(hw_params
)) * params_channels(hw_params
));
1497 * reset the audio format and release the buffer
1499 static int snd_usb_hw_free(struct snd_pcm_substream
*substream
)
1501 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
1503 subs
->cur_audiofmt
= NULL
;
1505 subs
->period_bytes
= 0;
1506 if (!subs
->stream
->chip
->shutdown
)
1507 release_substream_urbs(subs
, 0);
1508 return snd_pcm_free_vmalloc_buffer(substream
);
1514 * only a few subtle things...
1516 static int snd_usb_pcm_prepare(struct snd_pcm_substream
*substream
)
1518 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1519 struct snd_usb_substream
*subs
= runtime
->private_data
;
1521 if (! subs
->cur_audiofmt
) {
1522 snd_printk(KERN_ERR
"usbaudio: no format is specified!\n");
1526 /* some unit conversions in runtime */
1527 subs
->maxframesize
= bytes_to_frames(runtime
, subs
->maxpacksize
);
1528 subs
->curframesize
= bytes_to_frames(runtime
, subs
->curpacksize
);
1530 /* reset the pointer */
1531 subs
->hwptr_done
= 0;
1532 subs
->transfer_done
= 0;
1536 /* clear urbs (to be sure) */
1537 deactivate_urbs(subs
, 0, 1);
1538 wait_clear_urbs(subs
);
1540 /* for playback, submit the URBs now; otherwise, the first hwptr_done
1541 * updates for all URBs would happen at the same time when starting */
1542 if (subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) {
1543 subs
->ops
.prepare
= prepare_nodata_playback_urb
;
1544 return start_urbs(subs
, runtime
);
1549 static struct snd_pcm_hardware snd_usb_hardware
=
1551 .info
= SNDRV_PCM_INFO_MMAP
|
1552 SNDRV_PCM_INFO_MMAP_VALID
|
1553 SNDRV_PCM_INFO_BATCH
|
1554 SNDRV_PCM_INFO_INTERLEAVED
|
1555 SNDRV_PCM_INFO_BLOCK_TRANSFER
|
1556 SNDRV_PCM_INFO_PAUSE
,
1557 .buffer_bytes_max
= 1024 * 1024,
1558 .period_bytes_min
= 64,
1559 .period_bytes_max
= 512 * 1024,
1561 .periods_max
= 1024,
1568 #ifdef HW_CONST_DEBUG
1569 #define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
1571 #define hwc_debug(fmt, args...) /**/
1574 static int hw_check_valid_format(struct snd_usb_substream
*subs
,
1575 struct snd_pcm_hw_params
*params
,
1576 struct audioformat
*fp
)
1578 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
);
1579 struct snd_interval
*ct
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
1580 struct snd_mask
*fmts
= hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
);
1581 struct snd_interval
*pt
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_PERIOD_TIME
);
1584 /* check the format */
1585 if (!snd_mask_test(fmts
, fp
->format
)) {
1586 hwc_debug(" > check: no supported format %d\n", fp
->format
);
1589 /* check the channels */
1590 if (fp
->channels
< ct
->min
|| fp
->channels
> ct
->max
) {
1591 hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp
->channels
, ct
->min
, ct
->max
);
1594 /* check the rate is within the range */
1595 if (fp
->rate_min
> it
->max
|| (fp
->rate_min
== it
->max
&& it
->openmax
)) {
1596 hwc_debug(" > check: rate_min %d > max %d\n", fp
->rate_min
, it
->max
);
1599 if (fp
->rate_max
< it
->min
|| (fp
->rate_max
== it
->min
&& it
->openmin
)) {
1600 hwc_debug(" > check: rate_max %d < min %d\n", fp
->rate_max
, it
->min
);
1603 /* check whether the period time is >= the data packet interval */
1604 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_HIGH
) {
1605 ptime
= 125 * (1 << fp
->datainterval
);
1606 if (ptime
> pt
->max
|| (ptime
== pt
->max
&& pt
->openmax
)) {
1607 hwc_debug(" > check: ptime %u > max %u\n", ptime
, pt
->max
);
1614 static int hw_rule_rate(struct snd_pcm_hw_params
*params
,
1615 struct snd_pcm_hw_rule
*rule
)
1617 struct snd_usb_substream
*subs
= rule
->private;
1618 struct list_head
*p
;
1619 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
);
1620 unsigned int rmin
, rmax
;
1623 hwc_debug("hw_rule_rate: (%d,%d)\n", it
->min
, it
->max
);
1626 list_for_each(p
, &subs
->fmt_list
) {
1627 struct audioformat
*fp
;
1628 fp
= list_entry(p
, struct audioformat
, list
);
1629 if (!hw_check_valid_format(subs
, params
, fp
))
1632 if (rmin
> fp
->rate_min
)
1633 rmin
= fp
->rate_min
;
1634 if (rmax
< fp
->rate_max
)
1635 rmax
= fp
->rate_max
;
1637 rmin
= fp
->rate_min
;
1638 rmax
= fp
->rate_max
;
1643 hwc_debug(" --> get empty\n");
1649 if (it
->min
< rmin
) {
1654 if (it
->max
> rmax
) {
1659 if (snd_interval_checkempty(it
)) {
1663 hwc_debug(" --> (%d, %d) (changed = %d)\n", it
->min
, it
->max
, changed
);
1668 static int hw_rule_channels(struct snd_pcm_hw_params
*params
,
1669 struct snd_pcm_hw_rule
*rule
)
1671 struct snd_usb_substream
*subs
= rule
->private;
1672 struct list_head
*p
;
1673 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
1674 unsigned int rmin
, rmax
;
1677 hwc_debug("hw_rule_channels: (%d,%d)\n", it
->min
, it
->max
);
1680 list_for_each(p
, &subs
->fmt_list
) {
1681 struct audioformat
*fp
;
1682 fp
= list_entry(p
, struct audioformat
, list
);
1683 if (!hw_check_valid_format(subs
, params
, fp
))
1686 if (rmin
> fp
->channels
)
1687 rmin
= fp
->channels
;
1688 if (rmax
< fp
->channels
)
1689 rmax
= fp
->channels
;
1691 rmin
= fp
->channels
;
1692 rmax
= fp
->channels
;
1697 hwc_debug(" --> get empty\n");
1703 if (it
->min
< rmin
) {
1708 if (it
->max
> rmax
) {
1713 if (snd_interval_checkempty(it
)) {
1717 hwc_debug(" --> (%d, %d) (changed = %d)\n", it
->min
, it
->max
, changed
);
1721 static int hw_rule_format(struct snd_pcm_hw_params
*params
,
1722 struct snd_pcm_hw_rule
*rule
)
1724 struct snd_usb_substream
*subs
= rule
->private;
1725 struct list_head
*p
;
1726 struct snd_mask
*fmt
= hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
);
1731 hwc_debug("hw_rule_format: %x:%x\n", fmt
->bits
[0], fmt
->bits
[1]);
1733 list_for_each(p
, &subs
->fmt_list
) {
1734 struct audioformat
*fp
;
1735 fp
= list_entry(p
, struct audioformat
, list
);
1736 if (!hw_check_valid_format(subs
, params
, fp
))
1738 fbits
|= (1ULL << fp
->format
);
1741 oldbits
[0] = fmt
->bits
[0];
1742 oldbits
[1] = fmt
->bits
[1];
1743 fmt
->bits
[0] &= (u32
)fbits
;
1744 fmt
->bits
[1] &= (u32
)(fbits
>> 32);
1745 if (!fmt
->bits
[0] && !fmt
->bits
[1]) {
1746 hwc_debug(" --> get empty\n");
1749 changed
= (oldbits
[0] != fmt
->bits
[0] || oldbits
[1] != fmt
->bits
[1]);
1750 hwc_debug(" --> %x:%x (changed = %d)\n", fmt
->bits
[0], fmt
->bits
[1], changed
);
1754 static int hw_rule_period_time(struct snd_pcm_hw_params
*params
,
1755 struct snd_pcm_hw_rule
*rule
)
1757 struct snd_usb_substream
*subs
= rule
->private;
1758 struct audioformat
*fp
;
1759 struct snd_interval
*it
;
1760 unsigned char min_datainterval
;
1764 it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_PERIOD_TIME
);
1765 hwc_debug("hw_rule_period_time: (%u,%u)\n", it
->min
, it
->max
);
1766 min_datainterval
= 0xff;
1767 list_for_each_entry(fp
, &subs
->fmt_list
, list
) {
1768 if (!hw_check_valid_format(subs
, params
, fp
))
1770 min_datainterval
= min(min_datainterval
, fp
->datainterval
);
1772 if (min_datainterval
== 0xff) {
1773 hwc_debug(" --> get emtpy\n");
1777 pmin
= 125 * (1 << min_datainterval
);
1779 if (it
->min
< pmin
) {
1784 if (snd_interval_checkempty(it
)) {
1788 hwc_debug(" --> (%u,%u) (changed = %d)\n", it
->min
, it
->max
, changed
);
1793 * If the device supports unusual bit rates, does the request meet these?
1795 static int snd_usb_pcm_check_knot(struct snd_pcm_runtime
*runtime
,
1796 struct snd_usb_substream
*subs
)
1798 struct audioformat
*fp
;
1799 int count
= 0, needs_knot
= 0;
1802 list_for_each_entry(fp
, &subs
->fmt_list
, list
) {
1803 if (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)
1805 count
+= fp
->nr_rates
;
1806 if (fp
->rates
& SNDRV_PCM_RATE_KNOT
)
1812 subs
->rate_list
.count
= count
;
1813 subs
->rate_list
.list
= kmalloc(sizeof(int) * count
, GFP_KERNEL
);
1814 subs
->rate_list
.mask
= 0;
1816 list_for_each_entry(fp
, &subs
->fmt_list
, list
) {
1818 for (i
= 0; i
< fp
->nr_rates
; i
++)
1819 subs
->rate_list
.list
[count
++] = fp
->rate_table
[i
];
1821 err
= snd_pcm_hw_constraint_list(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
,
1831 * set up the runtime hardware information.
1834 static int setup_hw_info(struct snd_pcm_runtime
*runtime
, struct snd_usb_substream
*subs
)
1836 struct list_head
*p
;
1837 unsigned int pt
, ptmin
;
1838 int param_period_time_if_needed
;
1841 runtime
->hw
.formats
= subs
->formats
;
1843 runtime
->hw
.rate_min
= 0x7fffffff;
1844 runtime
->hw
.rate_max
= 0;
1845 runtime
->hw
.channels_min
= 256;
1846 runtime
->hw
.channels_max
= 0;
1847 runtime
->hw
.rates
= 0;
1849 /* check min/max rates and channels */
1850 list_for_each(p
, &subs
->fmt_list
) {
1851 struct audioformat
*fp
;
1852 fp
= list_entry(p
, struct audioformat
, list
);
1853 runtime
->hw
.rates
|= fp
->rates
;
1854 if (runtime
->hw
.rate_min
> fp
->rate_min
)
1855 runtime
->hw
.rate_min
= fp
->rate_min
;
1856 if (runtime
->hw
.rate_max
< fp
->rate_max
)
1857 runtime
->hw
.rate_max
= fp
->rate_max
;
1858 if (runtime
->hw
.channels_min
> fp
->channels
)
1859 runtime
->hw
.channels_min
= fp
->channels
;
1860 if (runtime
->hw
.channels_max
< fp
->channels
)
1861 runtime
->hw
.channels_max
= fp
->channels
;
1862 if (fp
->fmt_type
== USB_FORMAT_TYPE_II
&& fp
->frame_size
> 0) {
1863 /* FIXME: there might be more than one audio formats... */
1864 runtime
->hw
.period_bytes_min
= runtime
->hw
.period_bytes_max
=
1867 pt
= 125 * (1 << fp
->datainterval
);
1868 ptmin
= min(ptmin
, pt
);
1871 param_period_time_if_needed
= SNDRV_PCM_HW_PARAM_PERIOD_TIME
;
1872 if (snd_usb_get_speed(subs
->dev
) != USB_SPEED_HIGH
)
1873 /* full speed devices have fixed data packet interval */
1876 /* if period time doesn't go below 1 ms, no rules needed */
1877 param_period_time_if_needed
= -1;
1878 snd_pcm_hw_constraint_minmax(runtime
, SNDRV_PCM_HW_PARAM_PERIOD_TIME
,
1881 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
,
1883 SNDRV_PCM_HW_PARAM_FORMAT
,
1884 SNDRV_PCM_HW_PARAM_CHANNELS
,
1885 param_period_time_if_needed
,
1888 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_CHANNELS
,
1889 hw_rule_channels
, subs
,
1890 SNDRV_PCM_HW_PARAM_FORMAT
,
1891 SNDRV_PCM_HW_PARAM_RATE
,
1892 param_period_time_if_needed
,
1895 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_FORMAT
,
1896 hw_rule_format
, subs
,
1897 SNDRV_PCM_HW_PARAM_RATE
,
1898 SNDRV_PCM_HW_PARAM_CHANNELS
,
1899 param_period_time_if_needed
,
1902 if (param_period_time_if_needed
>= 0) {
1903 err
= snd_pcm_hw_rule_add(runtime
, 0,
1904 SNDRV_PCM_HW_PARAM_PERIOD_TIME
,
1905 hw_rule_period_time
, subs
,
1906 SNDRV_PCM_HW_PARAM_FORMAT
,
1907 SNDRV_PCM_HW_PARAM_CHANNELS
,
1908 SNDRV_PCM_HW_PARAM_RATE
,
1913 if ((err
= snd_usb_pcm_check_knot(runtime
, subs
)) < 0)
1918 static int snd_usb_pcm_open(struct snd_pcm_substream
*substream
, int direction
)
1920 struct snd_usb_stream
*as
= snd_pcm_substream_chip(substream
);
1921 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1922 struct snd_usb_substream
*subs
= &as
->substream
[direction
];
1924 subs
->interface
= -1;
1926 runtime
->hw
= snd_usb_hardware
;
1927 runtime
->private_data
= subs
;
1928 subs
->pcm_substream
= substream
;
1929 return setup_hw_info(runtime
, subs
);
1932 static int snd_usb_pcm_close(struct snd_pcm_substream
*substream
, int direction
)
1934 struct snd_usb_stream
*as
= snd_pcm_substream_chip(substream
);
1935 struct snd_usb_substream
*subs
= &as
->substream
[direction
];
1937 if (subs
->interface
>= 0) {
1938 usb_set_interface(subs
->dev
, subs
->interface
, 0);
1939 subs
->interface
= -1;
1941 subs
->pcm_substream
= NULL
;
1945 static int snd_usb_playback_open(struct snd_pcm_substream
*substream
)
1947 return snd_usb_pcm_open(substream
, SNDRV_PCM_STREAM_PLAYBACK
);
1950 static int snd_usb_playback_close(struct snd_pcm_substream
*substream
)
1952 return snd_usb_pcm_close(substream
, SNDRV_PCM_STREAM_PLAYBACK
);
1955 static int snd_usb_capture_open(struct snd_pcm_substream
*substream
)
1957 return snd_usb_pcm_open(substream
, SNDRV_PCM_STREAM_CAPTURE
);
1960 static int snd_usb_capture_close(struct snd_pcm_substream
*substream
)
1962 return snd_usb_pcm_close(substream
, SNDRV_PCM_STREAM_CAPTURE
);
1965 static struct snd_pcm_ops snd_usb_playback_ops
= {
1966 .open
= snd_usb_playback_open
,
1967 .close
= snd_usb_playback_close
,
1968 .ioctl
= snd_pcm_lib_ioctl
,
1969 .hw_params
= snd_usb_hw_params
,
1970 .hw_free
= snd_usb_hw_free
,
1971 .prepare
= snd_usb_pcm_prepare
,
1972 .trigger
= snd_usb_pcm_playback_trigger
,
1973 .pointer
= snd_usb_pcm_pointer
,
1974 .page
= snd_pcm_get_vmalloc_page
,
1977 static struct snd_pcm_ops snd_usb_capture_ops
= {
1978 .open
= snd_usb_capture_open
,
1979 .close
= snd_usb_capture_close
,
1980 .ioctl
= snd_pcm_lib_ioctl
,
1981 .hw_params
= snd_usb_hw_params
,
1982 .hw_free
= snd_usb_hw_free
,
1983 .prepare
= snd_usb_pcm_prepare
,
1984 .trigger
= snd_usb_pcm_capture_trigger
,
1985 .pointer
= snd_usb_pcm_pointer
,
1986 .page
= snd_pcm_get_vmalloc_page
,
1996 * combine bytes and get an integer value
1998 unsigned int snd_usb_combine_bytes(unsigned char *bytes
, int size
)
2001 case 1: return *bytes
;
2002 case 2: return combine_word(bytes
);
2003 case 3: return combine_triple(bytes
);
2004 case 4: return combine_quad(bytes
);
2010 * parse descriptor buffer and return the pointer starting the given
2013 void *snd_usb_find_desc(void *descstart
, int desclen
, void *after
, u8 dtype
)
2025 if (p
[1] == dtype
&& (!after
|| (void *)p
> after
)) {
2034 * find a class-specified interface descriptor with the given subtype.
2036 void *snd_usb_find_csint_desc(void *buffer
, int buflen
, void *after
, u8 dsubtype
)
2038 unsigned char *p
= after
;
2040 while ((p
= snd_usb_find_desc(buffer
, buflen
, p
,
2041 USB_DT_CS_INTERFACE
)) != NULL
) {
2042 if (p
[0] >= 3 && p
[2] == dsubtype
)
2049 * Wrapper for usb_control_msg().
2050 * Allocates a temp buffer to prevent dmaing from/to the stack.
2052 int snd_usb_ctl_msg(struct usb_device
*dev
, unsigned int pipe
, __u8 request
,
2053 __u8 requesttype
, __u16 value
, __u16 index
, void *data
,
2054 __u16 size
, int timeout
)
2060 buf
= kmemdup(data
, size
, GFP_KERNEL
);
2064 err
= usb_control_msg(dev
, pipe
, request
, requesttype
,
2065 value
, index
, buf
, size
, timeout
);
2067 memcpy(data
, buf
, size
);
2075 * entry point for linux usb interface
2078 static int usb_audio_probe(struct usb_interface
*intf
,
2079 const struct usb_device_id
*id
);
2080 static void usb_audio_disconnect(struct usb_interface
*intf
);
2083 static int usb_audio_suspend(struct usb_interface
*intf
, pm_message_t message
);
2084 static int usb_audio_resume(struct usb_interface
*intf
);
2086 #define usb_audio_suspend NULL
2087 #define usb_audio_resume NULL
2090 static struct usb_device_id usb_audio_ids
[] = {
2091 #include "usbquirks.h"
2092 { .match_flags
= (USB_DEVICE_ID_MATCH_INT_CLASS
| USB_DEVICE_ID_MATCH_INT_SUBCLASS
),
2093 .bInterfaceClass
= USB_CLASS_AUDIO
,
2094 .bInterfaceSubClass
= USB_SUBCLASS_AUDIO_CONTROL
},
2095 { } /* Terminating entry */
2098 MODULE_DEVICE_TABLE (usb
, usb_audio_ids
);
2100 static struct usb_driver usb_audio_driver
= {
2101 .name
= "snd-usb-audio",
2102 .probe
= usb_audio_probe
,
2103 .disconnect
= usb_audio_disconnect
,
2104 .suspend
= usb_audio_suspend
,
2105 .resume
= usb_audio_resume
,
2106 .id_table
= usb_audio_ids
,
2110 #if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS)
2113 * proc interface for list the supported pcm formats
2115 static void proc_dump_substream_formats(struct snd_usb_substream
*subs
, struct snd_info_buffer
*buffer
)
2117 struct list_head
*p
;
2118 static char *sync_types
[4] = {
2119 "NONE", "ASYNC", "ADAPTIVE", "SYNC"
2122 list_for_each(p
, &subs
->fmt_list
) {
2123 struct audioformat
*fp
;
2124 fp
= list_entry(p
, struct audioformat
, list
);
2125 snd_iprintf(buffer
, " Interface %d\n", fp
->iface
);
2126 snd_iprintf(buffer
, " Altset %d\n", fp
->altsetting
);
2127 snd_iprintf(buffer
, " Format: %#x (%d bits)\n",
2128 fp
->format
, snd_pcm_format_width(fp
->format
));
2129 snd_iprintf(buffer
, " Channels: %d\n", fp
->channels
);
2130 snd_iprintf(buffer
, " Endpoint: %d %s (%s)\n",
2131 fp
->endpoint
& USB_ENDPOINT_NUMBER_MASK
,
2132 fp
->endpoint
& USB_DIR_IN
? "IN" : "OUT",
2133 sync_types
[(fp
->ep_attr
& EP_ATTR_MASK
) >> 2]);
2134 if (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
2135 snd_iprintf(buffer
, " Rates: %d - %d (continuous)\n",
2136 fp
->rate_min
, fp
->rate_max
);
2139 snd_iprintf(buffer
, " Rates: ");
2140 for (i
= 0; i
< fp
->nr_rates
; i
++) {
2142 snd_iprintf(buffer
, ", ");
2143 snd_iprintf(buffer
, "%d", fp
->rate_table
[i
]);
2145 snd_iprintf(buffer
, "\n");
2147 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_HIGH
)
2148 snd_iprintf(buffer
, " Data packet interval: %d us\n",
2149 125 * (1 << fp
->datainterval
));
2150 // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
2151 // snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes);
2155 static void proc_dump_substream_status(struct snd_usb_substream
*subs
, struct snd_info_buffer
*buffer
)
2157 if (subs
->running
) {
2159 snd_iprintf(buffer
, " Status: Running\n");
2160 snd_iprintf(buffer
, " Interface = %d\n", subs
->interface
);
2161 snd_iprintf(buffer
, " Altset = %d\n", subs
->format
);
2162 snd_iprintf(buffer
, " URBs = %d [ ", subs
->nurbs
);
2163 for (i
= 0; i
< subs
->nurbs
; i
++)
2164 snd_iprintf(buffer
, "%d ", subs
->dataurb
[i
].packets
);
2165 snd_iprintf(buffer
, "]\n");
2166 snd_iprintf(buffer
, " Packet Size = %d\n", subs
->curpacksize
);
2167 snd_iprintf(buffer
, " Momentary freq = %u Hz (%#x.%04x)\n",
2168 snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
2169 ? get_full_speed_hz(subs
->freqm
)
2170 : get_high_speed_hz(subs
->freqm
),
2171 subs
->freqm
>> 16, subs
->freqm
& 0xffff);
2173 snd_iprintf(buffer
, " Status: Stop\n");
2177 static void proc_pcm_format_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
2179 struct snd_usb_stream
*stream
= entry
->private_data
;
2181 snd_iprintf(buffer
, "%s : %s\n", stream
->chip
->card
->longname
, stream
->pcm
->name
);
2183 if (stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
].num_formats
) {
2184 snd_iprintf(buffer
, "\nPlayback:\n");
2185 proc_dump_substream_status(&stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
], buffer
);
2186 proc_dump_substream_formats(&stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
], buffer
);
2188 if (stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
].num_formats
) {
2189 snd_iprintf(buffer
, "\nCapture:\n");
2190 proc_dump_substream_status(&stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
], buffer
);
2191 proc_dump_substream_formats(&stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
], buffer
);
2195 static void proc_pcm_format_add(struct snd_usb_stream
*stream
)
2197 struct snd_info_entry
*entry
;
2199 struct snd_card
*card
= stream
->chip
->card
;
2201 sprintf(name
, "stream%d", stream
->pcm_index
);
2202 if (!snd_card_proc_new(card
, name
, &entry
))
2203 snd_info_set_text_ops(entry
, stream
, proc_pcm_format_read
);
2208 static inline void proc_pcm_format_add(struct snd_usb_stream
*stream
)
2215 * initialize the substream instance.
2218 static void init_substream(struct snd_usb_stream
*as
, int stream
, struct audioformat
*fp
)
2220 struct snd_usb_substream
*subs
= &as
->substream
[stream
];
2222 INIT_LIST_HEAD(&subs
->fmt_list
);
2223 spin_lock_init(&subs
->lock
);
2226 subs
->direction
= stream
;
2227 subs
->dev
= as
->chip
->dev
;
2228 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
) {
2229 subs
->ops
= audio_urb_ops
[stream
];
2231 subs
->ops
= audio_urb_ops_high_speed
[stream
];
2232 switch (as
->chip
->usb_id
) {
2233 case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
2234 case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
2235 case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
2236 subs
->ops
.retire_sync
= retire_playback_sync_urb_hs_emu
;
2240 snd_pcm_set_ops(as
->pcm
, stream
,
2241 stream
== SNDRV_PCM_STREAM_PLAYBACK
?
2242 &snd_usb_playback_ops
: &snd_usb_capture_ops
);
2244 list_add_tail(&fp
->list
, &subs
->fmt_list
);
2245 subs
->formats
|= 1ULL << fp
->format
;
2246 subs
->endpoint
= fp
->endpoint
;
2247 subs
->num_formats
++;
2248 subs
->fmt_type
= fp
->fmt_type
;
2255 static void free_substream(struct snd_usb_substream
*subs
)
2257 struct list_head
*p
, *n
;
2259 if (!subs
->num_formats
)
2260 return; /* not initialized */
2261 list_for_each_safe(p
, n
, &subs
->fmt_list
) {
2262 struct audioformat
*fp
= list_entry(p
, struct audioformat
, list
);
2263 kfree(fp
->rate_table
);
2266 kfree(subs
->rate_list
.list
);
2271 * free a usb stream instance
2273 static void snd_usb_audio_stream_free(struct snd_usb_stream
*stream
)
2275 free_substream(&stream
->substream
[0]);
2276 free_substream(&stream
->substream
[1]);
2277 list_del(&stream
->list
);
2281 static void snd_usb_audio_pcm_free(struct snd_pcm
*pcm
)
2283 struct snd_usb_stream
*stream
= pcm
->private_data
;
2286 snd_usb_audio_stream_free(stream
);
2292 * add this endpoint to the chip instance.
2293 * if a stream with the same endpoint already exists, append to it.
2294 * if not, create a new pcm stream.
2296 static int add_audio_endpoint(struct snd_usb_audio
*chip
, int stream
, struct audioformat
*fp
)
2298 struct list_head
*p
;
2299 struct snd_usb_stream
*as
;
2300 struct snd_usb_substream
*subs
;
2301 struct snd_pcm
*pcm
;
2304 list_for_each(p
, &chip
->pcm_list
) {
2305 as
= list_entry(p
, struct snd_usb_stream
, list
);
2306 if (as
->fmt_type
!= fp
->fmt_type
)
2308 subs
= &as
->substream
[stream
];
2309 if (!subs
->endpoint
)
2311 if (subs
->endpoint
== fp
->endpoint
) {
2312 list_add_tail(&fp
->list
, &subs
->fmt_list
);
2313 subs
->num_formats
++;
2314 subs
->formats
|= 1ULL << fp
->format
;
2318 /* look for an empty stream */
2319 list_for_each(p
, &chip
->pcm_list
) {
2320 as
= list_entry(p
, struct snd_usb_stream
, list
);
2321 if (as
->fmt_type
!= fp
->fmt_type
)
2323 subs
= &as
->substream
[stream
];
2326 err
= snd_pcm_new_stream(as
->pcm
, stream
, 1);
2329 init_substream(as
, stream
, fp
);
2333 /* create a new pcm */
2334 as
= kzalloc(sizeof(*as
), GFP_KERNEL
);
2337 as
->pcm_index
= chip
->pcm_devs
;
2339 as
->fmt_type
= fp
->fmt_type
;
2340 err
= snd_pcm_new(chip
->card
, "USB Audio", chip
->pcm_devs
,
2341 stream
== SNDRV_PCM_STREAM_PLAYBACK
? 1 : 0,
2342 stream
== SNDRV_PCM_STREAM_PLAYBACK
? 0 : 1,
2349 pcm
->private_data
= as
;
2350 pcm
->private_free
= snd_usb_audio_pcm_free
;
2351 pcm
->info_flags
= 0;
2352 if (chip
->pcm_devs
> 0)
2353 sprintf(pcm
->name
, "USB Audio #%d", chip
->pcm_devs
);
2355 strcpy(pcm
->name
, "USB Audio");
2357 init_substream(as
, stream
, fp
);
2359 list_add(&as
->list
, &chip
->pcm_list
);
2362 proc_pcm_format_add(as
);
2369 * check if the device uses big-endian samples
2371 static int is_big_endian_format(struct snd_usb_audio
*chip
, struct audioformat
*fp
)
2373 switch (chip
->usb_id
) {
2374 case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
2375 if (fp
->endpoint
& USB_DIR_IN
)
2378 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2379 if (device_setup
[chip
->index
] == 0x00 ||
2380 fp
->altsetting
==1 || fp
->altsetting
==2 || fp
->altsetting
==3)
2387 * parse the audio format type I descriptor
2388 * and returns the corresponding pcm format
2391 * @fp: audioformat record
2392 * @format: the format tag (wFormatTag)
2393 * @fmt: the format type descriptor
2395 static int parse_audio_format_i_type(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2396 int format
, unsigned char *fmt
)
2399 int sample_width
, sample_bytes
;
2401 /* FIXME: correct endianess and sign? */
2403 sample_width
= fmt
[6];
2404 sample_bytes
= fmt
[5];
2406 case 0: /* some devices don't define this correctly... */
2407 snd_printdd(KERN_INFO
"%d:%u:%d : format type 0 is detected, processed as PCM\n",
2408 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
);
2410 case USB_AUDIO_FORMAT_PCM
:
2411 if (sample_width
> sample_bytes
* 8) {
2412 snd_printk(KERN_INFO
"%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
2413 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
,
2414 sample_width
, sample_bytes
);
2416 /* check the format byte size */
2419 pcm_format
= SNDRV_PCM_FORMAT_S8
;
2422 if (is_big_endian_format(chip
, fp
))
2423 pcm_format
= SNDRV_PCM_FORMAT_S16_BE
; /* grrr, big endian!! */
2425 pcm_format
= SNDRV_PCM_FORMAT_S16_LE
;
2428 if (is_big_endian_format(chip
, fp
))
2429 pcm_format
= SNDRV_PCM_FORMAT_S24_3BE
; /* grrr, big endian!! */
2431 pcm_format
= SNDRV_PCM_FORMAT_S24_3LE
;
2434 pcm_format
= SNDRV_PCM_FORMAT_S32_LE
;
2437 snd_printk(KERN_INFO
"%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
2438 chip
->dev
->devnum
, fp
->iface
,
2439 fp
->altsetting
, sample_width
, sample_bytes
);
2443 case USB_AUDIO_FORMAT_PCM8
:
2444 pcm_format
= SNDRV_PCM_FORMAT_U8
;
2446 /* Dallas DS4201 workaround: it advertises U8 format, but really
2448 if (chip
->usb_id
== USB_ID(0x04fa, 0x4201))
2449 pcm_format
= SNDRV_PCM_FORMAT_S8
;
2451 case USB_AUDIO_FORMAT_IEEE_FLOAT
:
2452 pcm_format
= SNDRV_PCM_FORMAT_FLOAT_LE
;
2454 case USB_AUDIO_FORMAT_ALAW
:
2455 pcm_format
= SNDRV_PCM_FORMAT_A_LAW
;
2457 case USB_AUDIO_FORMAT_MU_LAW
:
2458 pcm_format
= SNDRV_PCM_FORMAT_MU_LAW
;
2461 snd_printk(KERN_INFO
"%d:%u:%d : unsupported format type %d\n",
2462 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, format
);
2470 * parse the format descriptor and stores the possible sample rates
2471 * on the audioformat table.
2474 * @fp: audioformat record
2475 * @fmt: the format descriptor
2476 * @offset: the start offset of descriptor pointing the rate type
2477 * (7 for type I and II, 8 for type II)
2479 static int parse_audio_format_rates(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2480 unsigned char *fmt
, int offset
)
2482 int nr_rates
= fmt
[offset
];
2484 if (fmt
[0] < offset
+ 1 + 3 * (nr_rates
? nr_rates
: 2)) {
2485 snd_printk(KERN_ERR
"%d:%u:%d : invalid FORMAT_TYPE desc\n",
2486 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
);
2492 * build the rate table and bitmap flags
2496 fp
->rate_table
= kmalloc(sizeof(int) * nr_rates
, GFP_KERNEL
);
2497 if (fp
->rate_table
== NULL
) {
2498 snd_printk(KERN_ERR
"cannot malloc\n");
2503 fp
->rate_min
= fp
->rate_max
= 0;
2504 for (r
= 0, idx
= offset
+ 1; r
< nr_rates
; r
++, idx
+= 3) {
2505 unsigned int rate
= combine_triple(&fmt
[idx
]);
2508 /* C-Media CM6501 mislabels its 96 kHz altsetting */
2509 if (rate
== 48000 && nr_rates
== 1 &&
2510 (chip
->usb_id
== USB_ID(0x0d8c, 0x0201) ||
2511 chip
->usb_id
== USB_ID(0x0d8c, 0x0102)) &&
2512 fp
->altsetting
== 5 && fp
->maxpacksize
== 392)
2514 fp
->rate_table
[fp
->nr_rates
] = rate
;
2515 if (!fp
->rate_min
|| rate
< fp
->rate_min
)
2516 fp
->rate_min
= rate
;
2517 if (!fp
->rate_max
|| rate
> fp
->rate_max
)
2518 fp
->rate_max
= rate
;
2519 fp
->rates
|= snd_pcm_rate_to_rate_bit(rate
);
2522 if (!fp
->nr_rates
) {
2523 hwc_debug("All rates were zero. Skipping format!\n");
2527 /* continuous rates */
2528 fp
->rates
= SNDRV_PCM_RATE_CONTINUOUS
;
2529 fp
->rate_min
= combine_triple(&fmt
[offset
+ 1]);
2530 fp
->rate_max
= combine_triple(&fmt
[offset
+ 4]);
2536 * parse the format type I and III descriptors
2538 static int parse_audio_format_i(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2539 int format
, unsigned char *fmt
)
2543 if (fmt
[3] == USB_FORMAT_TYPE_III
) {
2544 /* FIXME: the format type is really IECxxx
2545 * but we give normal PCM format to get the existing
2548 switch (chip
->usb_id
) {
2550 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2551 if (device_setup
[chip
->index
] == 0x00 &&
2552 fp
->altsetting
== 6)
2553 pcm_format
= SNDRV_PCM_FORMAT_S16_BE
;
2555 pcm_format
= SNDRV_PCM_FORMAT_S16_LE
;
2558 pcm_format
= SNDRV_PCM_FORMAT_S16_LE
;
2561 pcm_format
= parse_audio_format_i_type(chip
, fp
, format
, fmt
);
2565 fp
->format
= pcm_format
;
2566 fp
->channels
= fmt
[4];
2567 if (fp
->channels
< 1) {
2568 snd_printk(KERN_ERR
"%d:%u:%d : invalid channels %d\n",
2569 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, fp
->channels
);
2572 return parse_audio_format_rates(chip
, fp
, fmt
, 7);
2576 * prase the format type II descriptor
2578 static int parse_audio_format_ii(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2579 int format
, unsigned char *fmt
)
2581 int brate
, framesize
;
2583 case USB_AUDIO_FORMAT_AC3
:
2584 /* FIXME: there is no AC3 format defined yet */
2585 // fp->format = SNDRV_PCM_FORMAT_AC3;
2586 fp
->format
= SNDRV_PCM_FORMAT_U8
; /* temporarily hack to receive byte streams */
2588 case USB_AUDIO_FORMAT_MPEG
:
2589 fp
->format
= SNDRV_PCM_FORMAT_MPEG
;
2592 snd_printd(KERN_INFO
"%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n",
2593 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, format
);
2594 fp
->format
= SNDRV_PCM_FORMAT_MPEG
;
2598 brate
= combine_word(&fmt
[4]); /* fmt[4,5] : wMaxBitRate (in kbps) */
2599 framesize
= combine_word(&fmt
[6]); /* fmt[6,7]: wSamplesPerFrame */
2600 snd_printd(KERN_INFO
"found format II with max.bitrate = %d, frame size=%d\n", brate
, framesize
);
2601 fp
->frame_size
= framesize
;
2602 return parse_audio_format_rates(chip
, fp
, fmt
, 8); /* fmt[8..] sample rates */
2605 static int parse_audio_format(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2606 int format
, unsigned char *fmt
, int stream
)
2611 case USB_FORMAT_TYPE_I
:
2612 case USB_FORMAT_TYPE_III
:
2613 err
= parse_audio_format_i(chip
, fp
, format
, fmt
);
2615 case USB_FORMAT_TYPE_II
:
2616 err
= parse_audio_format_ii(chip
, fp
, format
, fmt
);
2619 snd_printd(KERN_INFO
"%d:%u:%d : format type %d is not supported yet\n",
2620 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, fmt
[3]);
2623 fp
->fmt_type
= fmt
[3];
2627 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
2628 /* extigy apparently supports sample rates other than 48k
2629 * but not in ordinary way. so we enable only 48k atm.
2631 if (chip
->usb_id
== USB_ID(0x041e, 0x3000) ||
2632 chip
->usb_id
== USB_ID(0x041e, 0x3020) ||
2633 chip
->usb_id
== USB_ID(0x041e, 0x3061)) {
2634 if (fmt
[3] == USB_FORMAT_TYPE_I
&&
2635 fp
->rates
!= SNDRV_PCM_RATE_48000
&&
2636 fp
->rates
!= SNDRV_PCM_RATE_96000
)
2643 static unsigned char parse_datainterval(struct snd_usb_audio
*chip
,
2644 struct usb_host_interface
*alts
)
2646 if (snd_usb_get_speed(chip
->dev
) == USB_SPEED_HIGH
&&
2647 get_endpoint(alts
, 0)->bInterval
>= 1 &&
2648 get_endpoint(alts
, 0)->bInterval
<= 4)
2649 return get_endpoint(alts
, 0)->bInterval
- 1;
2654 static int audiophile_skip_setting_quirk(struct snd_usb_audio
*chip
,
2655 int iface
, int altno
);
2656 static int parse_audio_endpoints(struct snd_usb_audio
*chip
, int iface_no
)
2658 struct usb_device
*dev
;
2659 struct usb_interface
*iface
;
2660 struct usb_host_interface
*alts
;
2661 struct usb_interface_descriptor
*altsd
;
2662 int i
, altno
, err
, stream
;
2664 struct audioformat
*fp
= NULL
;
2665 unsigned char *fmt
, *csep
;
2670 /* parse the interface's altsettings */
2671 iface
= usb_ifnum_to_if(dev
, iface_no
);
2673 num
= iface
->num_altsetting
;
2676 * Dallas DS4201 workaround: It presents 5 altsettings, but the last
2677 * one misses syncpipe, and does not produce any sound.
2679 if (chip
->usb_id
== USB_ID(0x04fa, 0x4201))
2682 for (i
= 0; i
< num
; i
++) {
2683 alts
= &iface
->altsetting
[i
];
2684 altsd
= get_iface_desc(alts
);
2685 /* skip invalid one */
2686 if ((altsd
->bInterfaceClass
!= USB_CLASS_AUDIO
&&
2687 altsd
->bInterfaceClass
!= USB_CLASS_VENDOR_SPEC
) ||
2688 (altsd
->bInterfaceSubClass
!= USB_SUBCLASS_AUDIO_STREAMING
&&
2689 altsd
->bInterfaceSubClass
!= USB_SUBCLASS_VENDOR_SPEC
) ||
2690 altsd
->bNumEndpoints
< 1 ||
2691 le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
) == 0)
2693 /* must be isochronous */
2694 if ((get_endpoint(alts
, 0)->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) !=
2695 USB_ENDPOINT_XFER_ISOC
)
2697 /* check direction */
2698 stream
= (get_endpoint(alts
, 0)->bEndpointAddress
& USB_DIR_IN
) ?
2699 SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
2700 altno
= altsd
->bAlternateSetting
;
2702 /* audiophile usb: skip altsets incompatible with device_setup
2704 if (chip
->usb_id
== USB_ID(0x0763, 0x2003) &&
2705 audiophile_skip_setting_quirk(chip
, iface_no
, altno
))
2708 /* get audio formats */
2709 fmt
= snd_usb_find_csint_desc(alts
->extra
, alts
->extralen
, NULL
, AS_GENERAL
);
2711 snd_printk(KERN_ERR
"%d:%u:%d : AS_GENERAL descriptor not found\n",
2712 dev
->devnum
, iface_no
, altno
);
2717 snd_printk(KERN_ERR
"%d:%u:%d : invalid AS_GENERAL desc\n",
2718 dev
->devnum
, iface_no
, altno
);
2722 format
= (fmt
[6] << 8) | fmt
[5]; /* remember the format value */
2724 /* get format type */
2725 fmt
= snd_usb_find_csint_desc(alts
->extra
, alts
->extralen
, NULL
, FORMAT_TYPE
);
2727 snd_printk(KERN_ERR
"%d:%u:%d : no FORMAT_TYPE desc\n",
2728 dev
->devnum
, iface_no
, altno
);
2732 snd_printk(KERN_ERR
"%d:%u:%d : invalid FORMAT_TYPE desc\n",
2733 dev
->devnum
, iface_no
, altno
);
2738 * Blue Microphones workaround: The last altsetting is identical
2739 * with the previous one, except for a larger packet size, but
2740 * is actually a mislabeled two-channel setting; ignore it.
2742 if (fmt
[4] == 1 && fmt
[5] == 2 && altno
== 2 && num
== 3 &&
2743 fp
&& fp
->altsetting
== 1 && fp
->channels
== 1 &&
2744 fp
->format
== SNDRV_PCM_FORMAT_S16_LE
&&
2745 le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
) ==
2746 fp
->maxpacksize
* 2)
2749 csep
= snd_usb_find_desc(alts
->endpoint
[0].extra
, alts
->endpoint
[0].extralen
, NULL
, USB_DT_CS_ENDPOINT
);
2750 /* Creamware Noah has this descriptor after the 2nd endpoint */
2751 if (!csep
&& altsd
->bNumEndpoints
>= 2)
2752 csep
= snd_usb_find_desc(alts
->endpoint
[1].extra
, alts
->endpoint
[1].extralen
, NULL
, USB_DT_CS_ENDPOINT
);
2753 if (!csep
|| csep
[0] < 7 || csep
[2] != EP_GENERAL
) {
2754 snd_printk(KERN_WARNING
"%d:%u:%d : no or invalid"
2755 " class specific endpoint descriptor\n",
2756 dev
->devnum
, iface_no
, altno
);
2760 fp
= kzalloc(sizeof(*fp
), GFP_KERNEL
);
2762 snd_printk(KERN_ERR
"cannot malloc\n");
2766 fp
->iface
= iface_no
;
2767 fp
->altsetting
= altno
;
2769 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
2770 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
2771 fp
->datainterval
= parse_datainterval(chip
, alts
);
2772 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
2773 if (snd_usb_get_speed(dev
) == USB_SPEED_HIGH
)
2774 fp
->maxpacksize
= (((fp
->maxpacksize
>> 11) & 3) + 1)
2775 * (fp
->maxpacksize
& 0x7ff);
2776 fp
->attributes
= csep
? csep
[3] : 0;
2778 /* some quirks for attributes here */
2780 switch (chip
->usb_id
) {
2781 case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
2782 /* Optoplay sets the sample rate attribute although
2783 * it seems not supporting it in fact.
2785 fp
->attributes
&= ~EP_CS_ATTR_SAMPLE_RATE
;
2787 case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
2788 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2789 /* doesn't set the sample rate attribute, but supports it */
2790 fp
->attributes
|= EP_CS_ATTR_SAMPLE_RATE
;
2792 case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
2793 case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
2794 an older model 77d:223) */
2796 * plantronics headset and Griffin iMic have set adaptive-in
2797 * although it's really not...
2799 fp
->ep_attr
&= ~EP_ATTR_MASK
;
2800 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
2801 fp
->ep_attr
|= EP_ATTR_ADAPTIVE
;
2803 fp
->ep_attr
|= EP_ATTR_SYNC
;
2807 /* ok, let's parse further... */
2808 if (parse_audio_format(chip
, fp
, format
, fmt
, stream
) < 0) {
2809 kfree(fp
->rate_table
);
2814 snd_printdd(KERN_INFO
"%d:%u:%d: add audio endpoint %#x\n", dev
->devnum
, iface_no
, altno
, fp
->endpoint
);
2815 err
= add_audio_endpoint(chip
, stream
, fp
);
2817 kfree(fp
->rate_table
);
2821 /* try to set the interface... */
2822 usb_set_interface(chip
->dev
, iface_no
, altno
);
2823 init_usb_pitch(chip
->dev
, iface_no
, alts
, fp
);
2824 init_usb_sample_rate(chip
->dev
, iface_no
, alts
, fp
, fp
->rate_max
);
2831 * disconnect streams
2832 * called from snd_usb_audio_disconnect()
2834 static void snd_usb_stream_disconnect(struct list_head
*head
)
2837 struct snd_usb_stream
*as
;
2838 struct snd_usb_substream
*subs
;
2840 as
= list_entry(head
, struct snd_usb_stream
, list
);
2841 for (idx
= 0; idx
< 2; idx
++) {
2842 subs
= &as
->substream
[idx
];
2843 if (!subs
->num_formats
)
2845 release_substream_urbs(subs
, 1);
2846 subs
->interface
= -1;
2851 * parse audio control descriptor and create pcm/midi streams
2853 static int snd_usb_create_streams(struct snd_usb_audio
*chip
, int ctrlif
)
2855 struct usb_device
*dev
= chip
->dev
;
2856 struct usb_host_interface
*host_iface
;
2857 struct usb_interface
*iface
;
2861 /* find audiocontrol interface */
2862 host_iface
= &usb_ifnum_to_if(dev
, ctrlif
)->altsetting
[0];
2863 if (!(p1
= snd_usb_find_csint_desc(host_iface
->extra
, host_iface
->extralen
, NULL
, HEADER
))) {
2864 snd_printk(KERN_ERR
"cannot find HEADER\n");
2867 if (! p1
[7] || p1
[0] < 8 + p1
[7]) {
2868 snd_printk(KERN_ERR
"invalid HEADER\n");
2873 * parse all USB audio streaming interfaces
2875 for (i
= 0; i
< p1
[7]; i
++) {
2876 struct usb_host_interface
*alts
;
2877 struct usb_interface_descriptor
*altsd
;
2879 iface
= usb_ifnum_to_if(dev
, j
);
2881 snd_printk(KERN_ERR
"%d:%u:%d : does not exist\n",
2882 dev
->devnum
, ctrlif
, j
);
2885 if (usb_interface_claimed(iface
)) {
2886 snd_printdd(KERN_INFO
"%d:%d:%d: skipping, already claimed\n", dev
->devnum
, ctrlif
, j
);
2889 alts
= &iface
->altsetting
[0];
2890 altsd
= get_iface_desc(alts
);
2891 if ((altsd
->bInterfaceClass
== USB_CLASS_AUDIO
||
2892 altsd
->bInterfaceClass
== USB_CLASS_VENDOR_SPEC
) &&
2893 altsd
->bInterfaceSubClass
== USB_SUBCLASS_MIDI_STREAMING
) {
2894 if (snd_usb_create_midi_interface(chip
, iface
, NULL
) < 0) {
2895 snd_printk(KERN_ERR
"%d:%u:%d: cannot create sequencer device\n", dev
->devnum
, ctrlif
, j
);
2898 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
2901 if ((altsd
->bInterfaceClass
!= USB_CLASS_AUDIO
&&
2902 altsd
->bInterfaceClass
!= USB_CLASS_VENDOR_SPEC
) ||
2903 altsd
->bInterfaceSubClass
!= USB_SUBCLASS_AUDIO_STREAMING
) {
2904 snd_printdd(KERN_ERR
"%d:%u:%d: skipping non-supported interface %d\n", dev
->devnum
, ctrlif
, j
, altsd
->bInterfaceClass
);
2905 /* skip non-supported classes */
2908 if (snd_usb_get_speed(dev
) == USB_SPEED_LOW
) {
2909 snd_printk(KERN_ERR
"low speed audio streaming not supported\n");
2912 if (! parse_audio_endpoints(chip
, j
)) {
2913 usb_set_interface(dev
, j
, 0); /* reset the current interface */
2914 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
2922 * create a stream for an endpoint/altsetting without proper descriptors
2924 static int create_fixed_stream_quirk(struct snd_usb_audio
*chip
,
2925 struct usb_interface
*iface
,
2926 const struct snd_usb_audio_quirk
*quirk
)
2928 struct audioformat
*fp
;
2929 struct usb_host_interface
*alts
;
2931 unsigned *rate_table
= NULL
;
2933 fp
= kmemdup(quirk
->data
, sizeof(*fp
), GFP_KERNEL
);
2935 snd_printk(KERN_ERR
"cannot memdup\n");
2938 if (fp
->nr_rates
> 0) {
2939 rate_table
= kmalloc(sizeof(int) * fp
->nr_rates
, GFP_KERNEL
);
2944 memcpy(rate_table
, fp
->rate_table
, sizeof(int) * fp
->nr_rates
);
2945 fp
->rate_table
= rate_table
;
2948 stream
= (fp
->endpoint
& USB_DIR_IN
)
2949 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
2950 err
= add_audio_endpoint(chip
, stream
, fp
);
2956 if (fp
->iface
!= get_iface_desc(&iface
->altsetting
[0])->bInterfaceNumber
||
2957 fp
->altset_idx
>= iface
->num_altsetting
) {
2962 alts
= &iface
->altsetting
[fp
->altset_idx
];
2963 fp
->datainterval
= parse_datainterval(chip
, alts
);
2964 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
2965 usb_set_interface(chip
->dev
, fp
->iface
, 0);
2966 init_usb_pitch(chip
->dev
, fp
->iface
, alts
, fp
);
2967 init_usb_sample_rate(chip
->dev
, fp
->iface
, alts
, fp
, fp
->rate_max
);
2972 * create a stream for an interface with proper descriptors
2974 static int create_standard_audio_quirk(struct snd_usb_audio
*chip
,
2975 struct usb_interface
*iface
,
2976 const struct snd_usb_audio_quirk
*quirk
)
2978 struct usb_host_interface
*alts
;
2979 struct usb_interface_descriptor
*altsd
;
2982 alts
= &iface
->altsetting
[0];
2983 altsd
= get_iface_desc(alts
);
2984 err
= parse_audio_endpoints(chip
, altsd
->bInterfaceNumber
);
2986 snd_printk(KERN_ERR
"cannot setup if %d: error %d\n",
2987 altsd
->bInterfaceNumber
, err
);
2990 /* reset the current interface */
2991 usb_set_interface(chip
->dev
, altsd
->bInterfaceNumber
, 0);
2996 * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
2997 * The only way to detect the sample rate is by looking at wMaxPacketSize.
2999 static int create_uaxx_quirk(struct snd_usb_audio
*chip
,
3000 struct usb_interface
*iface
,
3001 const struct snd_usb_audio_quirk
*quirk
)
3003 static const struct audioformat ua_format
= {
3004 .format
= SNDRV_PCM_FORMAT_S24_3LE
,
3006 .fmt_type
= USB_FORMAT_TYPE_I
,
3009 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
3011 struct usb_host_interface
*alts
;
3012 struct usb_interface_descriptor
*altsd
;
3013 struct audioformat
*fp
;
3016 /* both PCM and MIDI interfaces have 2 or more altsettings */
3017 if (iface
->num_altsetting
< 2)
3019 alts
= &iface
->altsetting
[1];
3020 altsd
= get_iface_desc(alts
);
3022 if (altsd
->bNumEndpoints
== 2) {
3023 static const struct snd_usb_midi_endpoint_info ua700_ep
= {
3024 .out_cables
= 0x0003,
3027 static const struct snd_usb_audio_quirk ua700_quirk
= {
3028 .type
= QUIRK_MIDI_FIXED_ENDPOINT
,
3031 static const struct snd_usb_midi_endpoint_info uaxx_ep
= {
3032 .out_cables
= 0x0001,
3035 static const struct snd_usb_audio_quirk uaxx_quirk
= {
3036 .type
= QUIRK_MIDI_FIXED_ENDPOINT
,
3039 if (chip
->usb_id
== USB_ID(0x0582, 0x002b))
3040 return snd_usb_create_midi_interface(chip
, iface
,
3043 return snd_usb_create_midi_interface(chip
, iface
,
3047 if (altsd
->bNumEndpoints
!= 1)
3050 fp
= kmalloc(sizeof(*fp
), GFP_KERNEL
);
3053 memcpy(fp
, &ua_format
, sizeof(*fp
));
3055 fp
->iface
= altsd
->bInterfaceNumber
;
3056 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
3057 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
3058 fp
->datainterval
= 0;
3059 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
3061 switch (fp
->maxpacksize
) {
3063 fp
->rate_max
= fp
->rate_min
= 44100;
3067 fp
->rate_max
= fp
->rate_min
= 48000;
3071 fp
->rate_max
= fp
->rate_min
= 96000;
3074 snd_printk(KERN_ERR
"unknown sample rate\n");
3079 stream
= (fp
->endpoint
& USB_DIR_IN
)
3080 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3081 err
= add_audio_endpoint(chip
, stream
, fp
);
3086 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3091 * Create a stream for an Edirol UA-1000 interface.
3093 static int create_ua1000_quirk(struct snd_usb_audio
*chip
,
3094 struct usb_interface
*iface
,
3095 const struct snd_usb_audio_quirk
*quirk
)
3097 static const struct audioformat ua1000_format
= {
3098 .format
= SNDRV_PCM_FORMAT_S32_LE
,
3099 .fmt_type
= USB_FORMAT_TYPE_I
,
3103 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
3105 struct usb_host_interface
*alts
;
3106 struct usb_interface_descriptor
*altsd
;
3107 struct audioformat
*fp
;
3110 if (iface
->num_altsetting
!= 2)
3112 alts
= &iface
->altsetting
[1];
3113 altsd
= get_iface_desc(alts
);
3114 if (alts
->extralen
!= 11 || alts
->extra
[1] != USB_DT_CS_INTERFACE
||
3115 altsd
->bNumEndpoints
!= 1)
3118 fp
= kmemdup(&ua1000_format
, sizeof(*fp
), GFP_KERNEL
);
3122 fp
->channels
= alts
->extra
[4];
3123 fp
->iface
= altsd
->bInterfaceNumber
;
3124 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
3125 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
3126 fp
->datainterval
= parse_datainterval(chip
, alts
);
3127 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
3128 fp
->rate_max
= fp
->rate_min
= combine_triple(&alts
->extra
[8]);
3130 stream
= (fp
->endpoint
& USB_DIR_IN
)
3131 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3132 err
= add_audio_endpoint(chip
, stream
, fp
);
3137 /* FIXME: playback must be synchronized to capture */
3138 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3143 * Create a stream for an Edirol UA-101 interface.
3144 * Copy, paste and modify from Edirol UA-1000
3146 static int create_ua101_quirk(struct snd_usb_audio
*chip
,
3147 struct usb_interface
*iface
,
3148 const struct snd_usb_audio_quirk
*quirk
)
3150 static const struct audioformat ua101_format
= {
3151 .format
= SNDRV_PCM_FORMAT_S32_LE
,
3152 .fmt_type
= USB_FORMAT_TYPE_I
,
3156 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
3158 struct usb_host_interface
*alts
;
3159 struct usb_interface_descriptor
*altsd
;
3160 struct audioformat
*fp
;
3163 if (iface
->num_altsetting
!= 2)
3165 alts
= &iface
->altsetting
[1];
3166 altsd
= get_iface_desc(alts
);
3167 if (alts
->extralen
!= 18 || alts
->extra
[1] != USB_DT_CS_INTERFACE
||
3168 altsd
->bNumEndpoints
!= 1)
3171 fp
= kmemdup(&ua101_format
, sizeof(*fp
), GFP_KERNEL
);
3175 fp
->channels
= alts
->extra
[11];
3176 fp
->iface
= altsd
->bInterfaceNumber
;
3177 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
3178 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
3179 fp
->datainterval
= parse_datainterval(chip
, alts
);
3180 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
3181 fp
->rate_max
= fp
->rate_min
= combine_triple(&alts
->extra
[15]);
3183 stream
= (fp
->endpoint
& USB_DIR_IN
)
3184 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3185 err
= add_audio_endpoint(chip
, stream
, fp
);
3190 /* FIXME: playback must be synchronized to capture */
3191 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3195 static int snd_usb_create_quirk(struct snd_usb_audio
*chip
,
3196 struct usb_interface
*iface
,
3197 const struct snd_usb_audio_quirk
*quirk
);
3200 * handle the quirks for the contained interfaces
3202 static int create_composite_quirk(struct snd_usb_audio
*chip
,
3203 struct usb_interface
*iface
,
3204 const struct snd_usb_audio_quirk
*quirk
)
3206 int probed_ifnum
= get_iface_desc(iface
->altsetting
)->bInterfaceNumber
;
3209 for (quirk
= quirk
->data
; quirk
->ifnum
>= 0; ++quirk
) {
3210 iface
= usb_ifnum_to_if(chip
->dev
, quirk
->ifnum
);
3213 if (quirk
->ifnum
!= probed_ifnum
&&
3214 usb_interface_claimed(iface
))
3216 err
= snd_usb_create_quirk(chip
, iface
, quirk
);
3219 if (quirk
->ifnum
!= probed_ifnum
)
3220 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
3225 static int ignore_interface_quirk(struct snd_usb_audio
*chip
,
3226 struct usb_interface
*iface
,
3227 const struct snd_usb_audio_quirk
*quirk
)
3237 #define EXTIGY_FIRMWARE_SIZE_OLD 794
3238 #define EXTIGY_FIRMWARE_SIZE_NEW 483
3240 static int snd_usb_extigy_boot_quirk(struct usb_device
*dev
, struct usb_interface
*intf
)
3242 struct usb_host_config
*config
= dev
->actconfig
;
3245 if (le16_to_cpu(get_cfg_desc(config
)->wTotalLength
) == EXTIGY_FIRMWARE_SIZE_OLD
||
3246 le16_to_cpu(get_cfg_desc(config
)->wTotalLength
) == EXTIGY_FIRMWARE_SIZE_NEW
) {
3247 snd_printdd("sending Extigy boot sequence...\n");
3248 /* Send message to force it to reconnect with full interface. */
3249 err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
,0),
3250 0x10, 0x43, 0x0001, 0x000a, NULL
, 0, 1000);
3251 if (err
< 0) snd_printdd("error sending boot message: %d\n", err
);
3252 err
= usb_get_descriptor(dev
, USB_DT_DEVICE
, 0,
3253 &dev
->descriptor
, sizeof(dev
->descriptor
));
3254 config
= dev
->actconfig
;
3255 if (err
< 0) snd_printdd("error usb_get_descriptor: %d\n", err
);
3256 err
= usb_reset_configuration(dev
);
3257 if (err
< 0) snd_printdd("error usb_reset_configuration: %d\n", err
);
3258 snd_printdd("extigy_boot: new boot length = %d\n",
3259 le16_to_cpu(get_cfg_desc(config
)->wTotalLength
));
3260 return -ENODEV
; /* quit this anyway */
3265 static int snd_usb_audigy2nx_boot_quirk(struct usb_device
*dev
)
3269 snd_usb_ctl_msg(dev
, usb_rcvctrlpipe(dev
, 0), 0x2a,
3270 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
3271 0, 0, &buf
, 1, 1000);
3273 snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), 0x29,
3274 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
3275 1, 2000, NULL
, 0, 1000);
3282 * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
3283 * documented in the device's data sheet.
3285 static int snd_usb_cm106_write_int_reg(struct usb_device
*dev
, int reg
, u16 value
)
3289 buf
[1] = value
& 0xff;
3290 buf
[2] = (value
>> 8) & 0xff;
3292 return snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), USB_REQ_SET_CONFIGURATION
,
3293 USB_DIR_OUT
| USB_TYPE_CLASS
| USB_RECIP_ENDPOINT
,
3294 0, 0, &buf
, 4, 1000);
3297 static int snd_usb_cm106_boot_quirk(struct usb_device
*dev
)
3300 * Enable line-out driver mode, set headphone source to front
3301 * channels, enable stereo mic.
3303 return snd_usb_cm106_write_int_reg(dev
, 2, 0x8004);
3307 * C-Media CM6206 is based on CM106 with two additional
3308 * registers that are not documented in the data sheet.
3309 * Values here are chosen based on sniffing USB traffic
3312 static int snd_usb_cm6206_boot_quirk(struct usb_device
*dev
)
3315 int val
[] = {0x200c, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};
3317 for (reg
= 0; reg
< ARRAY_SIZE(val
); reg
++) {
3318 err
= snd_usb_cm106_write_int_reg(dev
, reg
, val
[reg
]);
3329 #define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
3330 #define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
3331 #define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
3332 #define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
3333 #define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
3334 #define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
3335 #define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
3336 #define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
3337 #define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
3338 #define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
3340 static int audiophile_skip_setting_quirk(struct snd_usb_audio
*chip
,
3341 int iface
, int altno
)
3343 /* Reset ALL ifaces to 0 altsetting.
3344 * Call it for every possible altsetting of every interface.
3346 usb_set_interface(chip
->dev
, iface
, 0);
3348 if (device_setup
[chip
->index
] & AUDIOPHILE_SET
) {
3349 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_DTS
)
3351 return 1; /* skip this altsetting */
3352 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_96K
)
3354 return 1; /* skip this altsetting */
3355 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3356 AUDIOPHILE_SET_24B_48K_DI
&& altno
!= 2)
3357 return 1; /* skip this altsetting */
3358 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3359 AUDIOPHILE_SET_24B_48K_NOTDI
&& altno
!= 3)
3360 return 1; /* skip this altsetting */
3361 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3362 AUDIOPHILE_SET_16B_48K_DI
&& altno
!= 4)
3363 return 1; /* skip this altsetting */
3364 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3365 AUDIOPHILE_SET_16B_48K_NOTDI
&& altno
!= 5)
3366 return 1; /* skip this altsetting */
3368 return 0; /* keep this altsetting */
3372 * audio-interface quirks
3374 * returns zero if no standard audio/MIDI parsing is needed.
3375 * returns a postive value if standard audio/midi interfaces are parsed
3377 * returns a negative value at error.
3379 static int snd_usb_create_quirk(struct snd_usb_audio
*chip
,
3380 struct usb_interface
*iface
,
3381 const struct snd_usb_audio_quirk
*quirk
)
3383 typedef int (*quirk_func_t
)(struct snd_usb_audio
*, struct usb_interface
*,
3384 const struct snd_usb_audio_quirk
*);
3385 static const quirk_func_t quirk_funcs
[] = {
3386 [QUIRK_IGNORE_INTERFACE
] = ignore_interface_quirk
,
3387 [QUIRK_COMPOSITE
] = create_composite_quirk
,
3388 [QUIRK_MIDI_STANDARD_INTERFACE
] = snd_usb_create_midi_interface
,
3389 [QUIRK_MIDI_FIXED_ENDPOINT
] = snd_usb_create_midi_interface
,
3390 [QUIRK_MIDI_YAMAHA
] = snd_usb_create_midi_interface
,
3391 [QUIRK_MIDI_MIDIMAN
] = snd_usb_create_midi_interface
,
3392 [QUIRK_MIDI_NOVATION
] = snd_usb_create_midi_interface
,
3393 [QUIRK_MIDI_FASTLANE
] = snd_usb_create_midi_interface
,
3394 [QUIRK_MIDI_EMAGIC
] = snd_usb_create_midi_interface
,
3395 [QUIRK_MIDI_CME
] = snd_usb_create_midi_interface
,
3396 [QUIRK_AUDIO_STANDARD_INTERFACE
] = create_standard_audio_quirk
,
3397 [QUIRK_AUDIO_FIXED_ENDPOINT
] = create_fixed_stream_quirk
,
3398 [QUIRK_AUDIO_EDIROL_UA1000
] = create_ua1000_quirk
,
3399 [QUIRK_AUDIO_EDIROL_UA101
] = create_ua101_quirk
,
3400 [QUIRK_AUDIO_EDIROL_UAXX
] = create_uaxx_quirk
3403 if (quirk
->type
< QUIRK_TYPE_COUNT
) {
3404 return quirk_funcs
[quirk
->type
](chip
, iface
, quirk
);
3406 snd_printd(KERN_ERR
"invalid quirk type %d\n", quirk
->type
);
3413 * common proc files to show the usb device info
3415 static void proc_audio_usbbus_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
3417 struct snd_usb_audio
*chip
= entry
->private_data
;
3418 if (!chip
->shutdown
)
3419 snd_iprintf(buffer
, "%03d/%03d\n", chip
->dev
->bus
->busnum
, chip
->dev
->devnum
);
3422 static void proc_audio_usbid_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
3424 struct snd_usb_audio
*chip
= entry
->private_data
;
3425 if (!chip
->shutdown
)
3426 snd_iprintf(buffer
, "%04x:%04x\n",
3427 USB_ID_VENDOR(chip
->usb_id
),
3428 USB_ID_PRODUCT(chip
->usb_id
));
3431 static void snd_usb_audio_create_proc(struct snd_usb_audio
*chip
)
3433 struct snd_info_entry
*entry
;
3434 if (!snd_card_proc_new(chip
->card
, "usbbus", &entry
))
3435 snd_info_set_text_ops(entry
, chip
, proc_audio_usbbus_read
);
3436 if (!snd_card_proc_new(chip
->card
, "usbid", &entry
))
3437 snd_info_set_text_ops(entry
, chip
, proc_audio_usbid_read
);
3441 * free the chip instance
3443 * here we have to do not much, since pcm and controls are already freed
3447 static int snd_usb_audio_free(struct snd_usb_audio
*chip
)
3453 static int snd_usb_audio_dev_free(struct snd_device
*device
)
3455 struct snd_usb_audio
*chip
= device
->device_data
;
3456 return snd_usb_audio_free(chip
);
3461 * create a chip instance and set its names.
3463 static int snd_usb_audio_create(struct usb_device
*dev
, int idx
,
3464 const struct snd_usb_audio_quirk
*quirk
,
3465 struct snd_usb_audio
**rchip
)
3467 struct snd_card
*card
;
3468 struct snd_usb_audio
*chip
;
3471 static struct snd_device_ops ops
= {
3472 .dev_free
= snd_usb_audio_dev_free
,
3477 if (snd_usb_get_speed(dev
) != USB_SPEED_LOW
&&
3478 snd_usb_get_speed(dev
) != USB_SPEED_FULL
&&
3479 snd_usb_get_speed(dev
) != USB_SPEED_HIGH
) {
3480 snd_printk(KERN_ERR
"unknown device speed %d\n", snd_usb_get_speed(dev
));
3484 err
= snd_card_create(index
[idx
], id
[idx
], THIS_MODULE
, 0, &card
);
3486 snd_printk(KERN_ERR
"cannot create card instance %d\n", idx
);
3490 chip
= kzalloc(sizeof(*chip
), GFP_KERNEL
);
3492 snd_card_free(card
);
3499 chip
->usb_id
= USB_ID(le16_to_cpu(dev
->descriptor
.idVendor
),
3500 le16_to_cpu(dev
->descriptor
.idProduct
));
3501 INIT_LIST_HEAD(&chip
->pcm_list
);
3502 INIT_LIST_HEAD(&chip
->midi_list
);
3503 INIT_LIST_HEAD(&chip
->mixer_list
);
3505 if ((err
= snd_device_new(card
, SNDRV_DEV_LOWLEVEL
, chip
, &ops
)) < 0) {
3506 snd_usb_audio_free(chip
);
3507 snd_card_free(card
);
3511 strcpy(card
->driver
, "USB-Audio");
3512 sprintf(component
, "USB%04x:%04x",
3513 USB_ID_VENDOR(chip
->usb_id
), USB_ID_PRODUCT(chip
->usb_id
));
3514 snd_component_add(card
, component
);
3516 /* retrieve the device string as shortname */
3517 if (quirk
&& quirk
->product_name
) {
3518 strlcpy(card
->shortname
, quirk
->product_name
, sizeof(card
->shortname
));
3520 if (!dev
->descriptor
.iProduct
||
3521 usb_string(dev
, dev
->descriptor
.iProduct
,
3522 card
->shortname
, sizeof(card
->shortname
)) <= 0) {
3523 /* no name available from anywhere, so use ID */
3524 sprintf(card
->shortname
, "USB Device %#04x:%#04x",
3525 USB_ID_VENDOR(chip
->usb_id
),
3526 USB_ID_PRODUCT(chip
->usb_id
));
3530 /* retrieve the vendor and device strings as longname */
3531 if (quirk
&& quirk
->vendor_name
) {
3532 len
= strlcpy(card
->longname
, quirk
->vendor_name
, sizeof(card
->longname
));
3534 if (dev
->descriptor
.iManufacturer
)
3535 len
= usb_string(dev
, dev
->descriptor
.iManufacturer
,
3536 card
->longname
, sizeof(card
->longname
));
3539 /* we don't really care if there isn't any vendor string */
3542 strlcat(card
->longname
, " ", sizeof(card
->longname
));
3544 strlcat(card
->longname
, card
->shortname
, sizeof(card
->longname
));
3546 len
= strlcat(card
->longname
, " at ", sizeof(card
->longname
));
3548 if (len
< sizeof(card
->longname
))
3549 usb_make_path(dev
, card
->longname
+ len
, sizeof(card
->longname
) - len
);
3551 strlcat(card
->longname
,
3552 snd_usb_get_speed(dev
) == USB_SPEED_LOW
? ", low speed" :
3553 snd_usb_get_speed(dev
) == USB_SPEED_FULL
? ", full speed" :
3555 sizeof(card
->longname
));
3557 snd_usb_audio_create_proc(chip
);
3565 * probe the active usb device
3567 * note that this can be called multiple times per a device, when it
3568 * includes multiple audio control interfaces.
3570 * thus we check the usb device pointer and creates the card instance
3571 * only at the first time. the successive calls of this function will
3572 * append the pcm interface to the corresponding card.
3574 static void *snd_usb_audio_probe(struct usb_device
*dev
,
3575 struct usb_interface
*intf
,
3576 const struct usb_device_id
*usb_id
)
3578 const struct snd_usb_audio_quirk
*quirk
= (const struct snd_usb_audio_quirk
*)usb_id
->driver_info
;
3580 struct snd_usb_audio
*chip
;
3581 struct usb_host_interface
*alts
;
3585 alts
= &intf
->altsetting
[0];
3586 ifnum
= get_iface_desc(alts
)->bInterfaceNumber
;
3587 id
= USB_ID(le16_to_cpu(dev
->descriptor
.idVendor
),
3588 le16_to_cpu(dev
->descriptor
.idProduct
));
3590 if (quirk
&& quirk
->ifnum
>= 0 && ifnum
!= quirk
->ifnum
)
3593 /* SB Extigy needs special boot-up sequence */
3594 /* if more models come, this will go to the quirk list. */
3595 if (id
== USB_ID(0x041e, 0x3000)) {
3596 if (snd_usb_extigy_boot_quirk(dev
, intf
) < 0)
3599 /* SB Audigy 2 NX needs its own boot-up magic, too */
3600 if (id
== USB_ID(0x041e, 0x3020)) {
3601 if (snd_usb_audigy2nx_boot_quirk(dev
) < 0)
3605 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
3606 if (id
== USB_ID(0x10f5, 0x0200)) {
3607 if (snd_usb_cm106_boot_quirk(dev
) < 0)
3611 /* C-Media CM6206 / CM106-Like Sound Device */
3612 if (id
== USB_ID(0x0d8c, 0x0102)) {
3613 if (snd_usb_cm6206_boot_quirk(dev
) < 0)
3618 * found a config. now register to ALSA
3621 /* check whether it's already registered */
3623 mutex_lock(®ister_mutex
);
3624 for (i
= 0; i
< SNDRV_CARDS
; i
++) {
3625 if (usb_chip
[i
] && usb_chip
[i
]->dev
== dev
) {
3626 if (usb_chip
[i
]->shutdown
) {
3627 snd_printk(KERN_ERR
"USB device is in the shutdown state, cannot create a card instance\n");
3635 /* it's a fresh one.
3636 * now look for an empty slot and create a new card instance
3638 for (i
= 0; i
< SNDRV_CARDS
; i
++)
3639 if (enable
[i
] && ! usb_chip
[i
] &&
3640 (vid
[i
] == -1 || vid
[i
] == USB_ID_VENDOR(id
)) &&
3641 (pid
[i
] == -1 || pid
[i
] == USB_ID_PRODUCT(id
))) {
3642 if (snd_usb_audio_create(dev
, i
, quirk
, &chip
) < 0) {
3645 snd_card_set_dev(chip
->card
, &intf
->dev
);
3649 printk(KERN_ERR
"no available usb audio device\n");
3654 err
= 1; /* continue */
3655 if (quirk
&& quirk
->ifnum
!= QUIRK_NO_INTERFACE
) {
3656 /* need some special handlings */
3657 if ((err
= snd_usb_create_quirk(chip
, intf
, quirk
)) < 0)
3662 /* create normal USB audio interfaces */
3663 if (snd_usb_create_streams(chip
, ifnum
) < 0 ||
3664 snd_usb_create_mixer(chip
, ifnum
, ignore_ctl_error
) < 0) {
3669 /* we are allowed to call snd_card_register() many times */
3670 if (snd_card_register(chip
->card
) < 0) {
3674 usb_chip
[chip
->index
] = chip
;
3675 chip
->num_interfaces
++;
3676 mutex_unlock(®ister_mutex
);
3680 if (chip
&& !chip
->num_interfaces
)
3681 snd_card_free(chip
->card
);
3682 mutex_unlock(®ister_mutex
);
3688 * we need to take care of counter, since disconnection can be called also
3689 * many times as well as usb_audio_probe().
3691 static void snd_usb_audio_disconnect(struct usb_device
*dev
, void *ptr
)
3693 struct snd_usb_audio
*chip
;
3694 struct snd_card
*card
;
3695 struct list_head
*p
;
3697 if (ptr
== (void *)-1L)
3702 mutex_lock(®ister_mutex
);
3704 chip
->num_interfaces
--;
3705 if (chip
->num_interfaces
<= 0) {
3706 snd_card_disconnect(card
);
3707 /* release the pcm resources */
3708 list_for_each(p
, &chip
->pcm_list
) {
3709 snd_usb_stream_disconnect(p
);
3711 /* release the midi resources */
3712 list_for_each(p
, &chip
->midi_list
) {
3713 snd_usbmidi_disconnect(p
);
3715 /* release mixer resources */
3716 list_for_each(p
, &chip
->mixer_list
) {
3717 snd_usb_mixer_disconnect(p
);
3719 usb_chip
[chip
->index
] = NULL
;
3720 mutex_unlock(®ister_mutex
);
3721 snd_card_free_when_closed(card
);
3723 mutex_unlock(®ister_mutex
);
3728 * new 2.5 USB kernel API
3730 static int usb_audio_probe(struct usb_interface
*intf
,
3731 const struct usb_device_id
*id
)
3734 chip
= snd_usb_audio_probe(interface_to_usbdev(intf
), intf
, id
);
3736 usb_set_intfdata(intf
, chip
);
3742 static void usb_audio_disconnect(struct usb_interface
*intf
)
3744 snd_usb_audio_disconnect(interface_to_usbdev(intf
),
3745 usb_get_intfdata(intf
));
3749 static int usb_audio_suspend(struct usb_interface
*intf
, pm_message_t message
)
3751 struct snd_usb_audio
*chip
= usb_get_intfdata(intf
);
3752 struct list_head
*p
;
3753 struct snd_usb_stream
*as
;
3755 if (chip
== (void *)-1L)
3758 snd_power_change_state(chip
->card
, SNDRV_CTL_POWER_D3hot
);
3759 if (!chip
->num_suspended_intf
++) {
3760 list_for_each(p
, &chip
->pcm_list
) {
3761 as
= list_entry(p
, struct snd_usb_stream
, list
);
3762 snd_pcm_suspend_all(as
->pcm
);
3769 static int usb_audio_resume(struct usb_interface
*intf
)
3771 struct snd_usb_audio
*chip
= usb_get_intfdata(intf
);
3773 if (chip
== (void *)-1L)
3775 if (--chip
->num_suspended_intf
)
3778 * ALSA leaves material resumption to user space
3782 snd_power_change_state(chip
->card
, SNDRV_CTL_POWER_D0
);
3786 #endif /* CONFIG_PM */
3788 static int __init
snd_usb_audio_init(void)
3790 if (nrpacks
< 1 || nrpacks
> MAX_PACKS
) {
3791 printk(KERN_WARNING
"invalid nrpacks value.\n");
3794 return usb_register(&usb_audio_driver
);
3798 static void __exit
snd_usb_audio_cleanup(void)
3800 usb_deregister(&usb_audio_driver
);
3803 module_init(snd_usb_audio_init
);
3804 module_exit(snd_usb_audio_cleanup
);