2 * (Tentative) USB Audio Driver for ALSA
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
8 * Many codes borrowed from audio.c by
9 * Alan Cox (alan@lxorguk.ukuu.org.uk)
10 * Thomas Sailer (sailer@ife.ee.ethz.ch)
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 * - async unlink should be used for avoiding the sleep inside lock.
31 * 2.4.22 usb-uhci seems buggy for async unlinking and results in
32 * oops. in such a cse, pass async_unlink=0 option.
33 * - the linked URBs would be preferred but not used so far because of
34 * the instability of unlinking.
35 * - type II is not supported properly. there is no device which supports
36 * this type *correctly*. SB extigy looks as if it supports, but it's
37 * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream).
41 #include <sound/driver.h>
42 #include <linux/bitops.h>
43 #include <linux/init.h>
44 #include <linux/list.h>
45 #include <linux/slab.h>
46 #include <linux/string.h>
47 #include <linux/usb.h>
48 #include <linux/vmalloc.h>
49 #include <linux/moduleparam.h>
50 #include <linux/mutex.h>
51 #include <sound/core.h>
52 #include <sound/info.h>
53 #include <sound/pcm.h>
54 #include <sound/pcm_params.h>
55 #include <sound/initval.h>
60 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
61 MODULE_DESCRIPTION("USB Audio");
62 MODULE_LICENSE("GPL");
63 MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
66 static int index
[SNDRV_CARDS
] = SNDRV_DEFAULT_IDX
; /* Index 0-MAX */
67 static char *id
[SNDRV_CARDS
] = SNDRV_DEFAULT_STR
; /* ID for this card */
68 static int enable
[SNDRV_CARDS
] = SNDRV_DEFAULT_ENABLE_PNP
; /* Enable this card */
69 static int vid
[SNDRV_CARDS
] = { [0 ... (SNDRV_CARDS
-1)] = -1 }; /* Vendor ID for this card */
70 static int pid
[SNDRV_CARDS
] = { [0 ... (SNDRV_CARDS
-1)] = -1 }; /* Product ID for this card */
71 static int nrpacks
= 8; /* max. number of packets per urb */
72 static int async_unlink
= 1;
73 static int device_setup
[SNDRV_CARDS
]; /* device parameter for this card*/
75 module_param_array(index
, int, NULL
, 0444);
76 MODULE_PARM_DESC(index
, "Index value for the USB audio adapter.");
77 module_param_array(id
, charp
, NULL
, 0444);
78 MODULE_PARM_DESC(id
, "ID string for the USB audio adapter.");
79 module_param_array(enable
, bool, NULL
, 0444);
80 MODULE_PARM_DESC(enable
, "Enable USB audio adapter.");
81 module_param_array(vid
, int, NULL
, 0444);
82 MODULE_PARM_DESC(vid
, "Vendor ID for the USB audio device.");
83 module_param_array(pid
, int, NULL
, 0444);
84 MODULE_PARM_DESC(pid
, "Product ID for the USB audio device.");
85 module_param(nrpacks
, int, 0644);
86 MODULE_PARM_DESC(nrpacks
, "Max. number of packets per URB.");
87 module_param(async_unlink
, bool, 0444);
88 MODULE_PARM_DESC(async_unlink
, "Use async unlink mode.");
89 module_param_array(device_setup
, int, NULL
, 0444);
90 MODULE_PARM_DESC(device_setup
, "Specific device setup (if needed).");
94 * debug the h/w constraints
96 /* #define HW_CONST_DEBUG */
104 #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
106 #define SYNC_URBS 4 /* always four urbs for sync */
107 #define MIN_PACKS_URB 1 /* minimum 1 packet per urb */
110 struct list_head list
;
111 snd_pcm_format_t format
; /* format type */
112 unsigned int channels
; /* # channels */
113 unsigned int fmt_type
; /* USB audio format type (1-3) */
114 unsigned int frame_size
; /* samples per frame for non-audio */
115 int iface
; /* interface number */
116 unsigned char altsetting
; /* corresponding alternate setting */
117 unsigned char altset_idx
; /* array index of altenate setting */
118 unsigned char attributes
; /* corresponding attributes of cs endpoint */
119 unsigned char endpoint
; /* endpoint */
120 unsigned char ep_attr
; /* endpoint attributes */
121 unsigned int maxpacksize
; /* max. packet size */
122 unsigned int rates
; /* rate bitmasks */
123 unsigned int rate_min
, rate_max
; /* min/max rates */
124 unsigned int nr_rates
; /* number of rate table entries */
125 unsigned int *rate_table
; /* rate table */
126 unsigned int needs_knot
; /* any unusual rates? */
129 struct snd_usb_substream
;
133 unsigned int buffer_size
; /* size of data buffer, if data URB */
134 struct snd_usb_substream
*subs
;
135 int index
; /* index for urb array */
136 int packets
; /* number of packets per urb */
140 int (*prepare
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
141 int (*retire
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
142 int (*prepare_sync
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
143 int (*retire_sync
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
146 struct snd_usb_substream
{
147 struct snd_usb_stream
*stream
;
148 struct usb_device
*dev
;
149 struct snd_pcm_substream
*pcm_substream
;
150 int direction
; /* playback or capture */
151 int interface
; /* current interface */
152 int endpoint
; /* assigned endpoint */
153 struct audioformat
*cur_audiofmt
; /* current audioformat pointer (for hw_params callback) */
154 unsigned int cur_rate
; /* current rate (for hw_params callback) */
155 unsigned int period_bytes
; /* current period bytes (for hw_params callback) */
156 unsigned int format
; /* USB data format */
157 unsigned int datapipe
; /* the data i/o pipe */
158 unsigned int syncpipe
; /* 1 - async out or adaptive in */
159 unsigned int datainterval
; /* log_2 of data packet interval */
160 unsigned int syncinterval
; /* P for adaptive mode, 0 otherwise */
161 unsigned int freqn
; /* nominal sampling rate in fs/fps in Q16.16 format */
162 unsigned int freqm
; /* momentary sampling rate in fs/fps in Q16.16 format */
163 unsigned int freqmax
; /* maximum sampling rate, used for buffer management */
164 unsigned int phase
; /* phase accumulator */
165 unsigned int maxpacksize
; /* max packet size in bytes */
166 unsigned int maxframesize
; /* max packet size in frames */
167 unsigned int curpacksize
; /* current packet size in bytes (for capture) */
168 unsigned int curframesize
; /* current packet size in frames (for capture) */
169 unsigned int fill_max
: 1; /* fill max packet size always */
170 unsigned int fmt_type
; /* USB audio format type (1-3) */
171 unsigned int packs_per_ms
; /* packets per millisecond (for playback) */
173 unsigned int running
: 1; /* running status */
175 unsigned int hwptr_done
; /* processed frame position in the buffer */
176 unsigned int transfer_done
; /* processed frames since last period update */
177 unsigned long active_mask
; /* bitmask of active urbs */
178 unsigned long unlink_mask
; /* bitmask of unlinked urbs */
180 unsigned int nurbs
; /* # urbs */
181 struct snd_urb_ctx dataurb
[MAX_URBS
]; /* data urb table */
182 struct snd_urb_ctx syncurb
[SYNC_URBS
]; /* sync urb table */
183 char *syncbuf
; /* sync buffer for all sync URBs */
184 dma_addr_t sync_dma
; /* DMA address of syncbuf */
186 u64 formats
; /* format bitmasks (all or'ed) */
187 unsigned int num_formats
; /* number of supported audio formats (list) */
188 struct list_head fmt_list
; /* format list */
191 struct snd_urb_ops ops
; /* callbacks (must be filled at init) */
195 struct snd_usb_stream
{
196 struct snd_usb_audio
*chip
;
199 unsigned int fmt_type
; /* USB audio format type (1-3) */
200 struct snd_usb_substream substream
[2];
201 struct list_head list
;
206 * we keep the snd_usb_audio_t instances by ourselves for merging
207 * the all interfaces on the same card as one sound device.
210 static DEFINE_MUTEX(register_mutex
);
211 static struct snd_usb_audio
*usb_chip
[SNDRV_CARDS
];
215 * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
216 * this will overflow at approx 524 kHz
218 static inline unsigned get_usb_full_speed_rate(unsigned int rate
)
220 return ((rate
<< 13) + 62) / 125;
224 * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
225 * this will overflow at approx 4 MHz
227 static inline unsigned get_usb_high_speed_rate(unsigned int rate
)
229 return ((rate
<< 10) + 62) / 125;
232 /* convert our full speed USB rate into sampling rate in Hz */
233 static inline unsigned get_full_speed_hz(unsigned int usb_rate
)
235 return (usb_rate
* 125 + (1 << 12)) >> 13;
238 /* convert our high speed USB rate into sampling rate in Hz */
239 static inline unsigned get_high_speed_hz(unsigned int usb_rate
)
241 return (usb_rate
* 125 + (1 << 9)) >> 10;
246 * prepare urb for full speed capture sync pipe
248 * fill the length and offset of each urb descriptor.
249 * the fixed 10.14 frequency is passed through the pipe.
251 static int prepare_capture_sync_urb(struct snd_usb_substream
*subs
,
252 struct snd_pcm_runtime
*runtime
,
255 unsigned char *cp
= urb
->transfer_buffer
;
256 struct snd_urb_ctx
*ctx
= urb
->context
;
258 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
259 urb
->iso_frame_desc
[0].length
= 3;
260 urb
->iso_frame_desc
[0].offset
= 0;
261 cp
[0] = subs
->freqn
>> 2;
262 cp
[1] = subs
->freqn
>> 10;
263 cp
[2] = subs
->freqn
>> 18;
268 * prepare urb for high speed capture sync pipe
270 * fill the length and offset of each urb descriptor.
271 * the fixed 12.13 frequency is passed as 16.16 through the pipe.
273 static int prepare_capture_sync_urb_hs(struct snd_usb_substream
*subs
,
274 struct snd_pcm_runtime
*runtime
,
277 unsigned char *cp
= urb
->transfer_buffer
;
278 struct snd_urb_ctx
*ctx
= urb
->context
;
280 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
281 urb
->iso_frame_desc
[0].length
= 4;
282 urb
->iso_frame_desc
[0].offset
= 0;
284 cp
[1] = subs
->freqn
>> 8;
285 cp
[2] = subs
->freqn
>> 16;
286 cp
[3] = subs
->freqn
>> 24;
291 * process after capture sync complete
294 static int retire_capture_sync_urb(struct snd_usb_substream
*subs
,
295 struct snd_pcm_runtime
*runtime
,
302 * prepare urb for capture data pipe
304 * fill the offset and length of each descriptor.
306 * we use a temporary buffer to write the captured data.
307 * since the length of written data is determined by host, we cannot
308 * write onto the pcm buffer directly... the data is thus copied
309 * later at complete callback to the global buffer.
311 static int prepare_capture_urb(struct snd_usb_substream
*subs
,
312 struct snd_pcm_runtime
*runtime
,
316 struct snd_urb_ctx
*ctx
= urb
->context
;
319 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
320 for (i
= 0; i
< ctx
->packets
; i
++) {
321 urb
->iso_frame_desc
[i
].offset
= offs
;
322 urb
->iso_frame_desc
[i
].length
= subs
->curpacksize
;
323 offs
+= subs
->curpacksize
;
325 urb
->transfer_buffer_length
= offs
;
326 urb
->number_of_packets
= ctx
->packets
;
328 if (! urb
->bandwidth
) {
330 bustime
= usb_check_bandwidth(urb
->dev
, urb
);
333 printk("urb %d: bandwidth = %d (packets = %d)\n", ctx
->index
, bustime
, urb
->number_of_packets
);
334 usb_claim_bandwidth(urb
->dev
, urb
, bustime
, 1);
341 * process after capture complete
343 * copy the data from each desctiptor to the pcm buffer, and
344 * update the current position.
346 static int retire_capture_urb(struct snd_usb_substream
*subs
,
347 struct snd_pcm_runtime
*runtime
,
353 unsigned int stride
, len
, oldptr
;
354 int period_elapsed
= 0;
356 stride
= runtime
->frame_bits
>> 3;
358 for (i
= 0; i
< urb
->number_of_packets
; i
++) {
359 cp
= (unsigned char *)urb
->transfer_buffer
+ urb
->iso_frame_desc
[i
].offset
;
360 if (urb
->iso_frame_desc
[i
].status
) {
361 snd_printd(KERN_ERR
"frame %d active: %d\n", i
, urb
->iso_frame_desc
[i
].status
);
364 len
= urb
->iso_frame_desc
[i
].actual_length
/ stride
;
367 /* update the current pointer */
368 spin_lock_irqsave(&subs
->lock
, flags
);
369 oldptr
= subs
->hwptr_done
;
370 subs
->hwptr_done
+= len
;
371 if (subs
->hwptr_done
>= runtime
->buffer_size
)
372 subs
->hwptr_done
-= runtime
->buffer_size
;
373 subs
->transfer_done
+= len
;
374 if (subs
->transfer_done
>= runtime
->period_size
) {
375 subs
->transfer_done
-= runtime
->period_size
;
378 spin_unlock_irqrestore(&subs
->lock
, flags
);
379 /* copy a data chunk */
380 if (oldptr
+ len
> runtime
->buffer_size
) {
381 unsigned int cnt
= runtime
->buffer_size
- oldptr
;
382 unsigned int blen
= cnt
* stride
;
383 memcpy(runtime
->dma_area
+ oldptr
* stride
, cp
, blen
);
384 memcpy(runtime
->dma_area
, cp
+ blen
, len
* stride
- blen
);
386 memcpy(runtime
->dma_area
+ oldptr
* stride
, cp
, len
* stride
);
390 snd_pcm_period_elapsed(subs
->pcm_substream
);
395 * Process after capture complete when paused. Nothing to do.
397 static int retire_paused_capture_urb(struct snd_usb_substream
*subs
,
398 struct snd_pcm_runtime
*runtime
,
406 * prepare urb for full speed playback sync pipe
408 * set up the offset and length to receive the current frequency.
411 static int prepare_playback_sync_urb(struct snd_usb_substream
*subs
,
412 struct snd_pcm_runtime
*runtime
,
415 struct snd_urb_ctx
*ctx
= urb
->context
;
417 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
418 urb
->iso_frame_desc
[0].length
= 3;
419 urb
->iso_frame_desc
[0].offset
= 0;
424 * prepare urb for high speed playback sync pipe
426 * set up the offset and length to receive the current frequency.
429 static int prepare_playback_sync_urb_hs(struct snd_usb_substream
*subs
,
430 struct snd_pcm_runtime
*runtime
,
433 struct snd_urb_ctx
*ctx
= urb
->context
;
435 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
436 urb
->iso_frame_desc
[0].length
= 4;
437 urb
->iso_frame_desc
[0].offset
= 0;
442 * process after full speed playback sync complete
444 * retrieve the current 10.14 frequency from pipe, and set it.
445 * the value is referred in prepare_playback_urb().
447 static int retire_playback_sync_urb(struct snd_usb_substream
*subs
,
448 struct snd_pcm_runtime
*runtime
,
454 if (urb
->iso_frame_desc
[0].status
== 0 &&
455 urb
->iso_frame_desc
[0].actual_length
== 3) {
456 f
= combine_triple((u8
*)urb
->transfer_buffer
) << 2;
457 if (f
>= subs
->freqn
- subs
->freqn
/ 8 && f
<= subs
->freqmax
) {
458 spin_lock_irqsave(&subs
->lock
, flags
);
460 spin_unlock_irqrestore(&subs
->lock
, flags
);
468 * process after high speed playback sync complete
470 * retrieve the current 12.13 frequency from pipe, and set it.
471 * the value is referred in prepare_playback_urb().
473 static int retire_playback_sync_urb_hs(struct snd_usb_substream
*subs
,
474 struct snd_pcm_runtime
*runtime
,
480 if (urb
->iso_frame_desc
[0].status
== 0 &&
481 urb
->iso_frame_desc
[0].actual_length
== 4) {
482 f
= combine_quad((u8
*)urb
->transfer_buffer
) & 0x0fffffff;
483 if (f
>= subs
->freqn
- subs
->freqn
/ 8 && f
<= subs
->freqmax
) {
484 spin_lock_irqsave(&subs
->lock
, flags
);
486 spin_unlock_irqrestore(&subs
->lock
, flags
);
493 /* determine the number of frames in the next packet */
494 static int snd_usb_audio_next_packet_size(struct snd_usb_substream
*subs
)
497 return subs
->maxframesize
;
499 subs
->phase
= (subs
->phase
& 0xffff)
500 + (subs
->freqm
<< subs
->datainterval
);
501 return min(subs
->phase
>> 16, subs
->maxframesize
);
506 * Prepare urb for streaming before playback starts or when paused.
508 * We don't have any data, so we send a frame of silence.
510 static int prepare_nodata_playback_urb(struct snd_usb_substream
*subs
,
511 struct snd_pcm_runtime
*runtime
,
514 unsigned int i
, offs
, counts
;
515 struct snd_urb_ctx
*ctx
= urb
->context
;
516 int stride
= runtime
->frame_bits
>> 3;
519 urb
->dev
= ctx
->subs
->dev
;
520 urb
->number_of_packets
= subs
->packs_per_ms
;
521 for (i
= 0; i
< subs
->packs_per_ms
; ++i
) {
522 counts
= snd_usb_audio_next_packet_size(subs
);
523 urb
->iso_frame_desc
[i
].offset
= offs
* stride
;
524 urb
->iso_frame_desc
[i
].length
= counts
* stride
;
527 urb
->transfer_buffer_length
= offs
* stride
;
528 memset(urb
->transfer_buffer
,
529 subs
->cur_audiofmt
->format
== SNDRV_PCM_FORMAT_U8
? 0x80 : 0,
535 * prepare urb for playback data pipe
537 * Since a URB can handle only a single linear buffer, we must use double
538 * buffering when the data to be transferred overflows the buffer boundary.
539 * To avoid inconsistencies when updating hwptr_done, we use double buffering
542 static int prepare_playback_urb(struct snd_usb_substream
*subs
,
543 struct snd_pcm_runtime
*runtime
,
549 int period_elapsed
= 0;
550 struct snd_urb_ctx
*ctx
= urb
->context
;
552 stride
= runtime
->frame_bits
>> 3;
555 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
556 urb
->number_of_packets
= 0;
557 spin_lock_irqsave(&subs
->lock
, flags
);
558 for (i
= 0; i
< ctx
->packets
; i
++) {
559 counts
= snd_usb_audio_next_packet_size(subs
);
560 /* set up descriptor */
561 urb
->iso_frame_desc
[i
].offset
= offs
* stride
;
562 urb
->iso_frame_desc
[i
].length
= counts
* stride
;
564 urb
->number_of_packets
++;
565 subs
->transfer_done
+= counts
;
566 if (subs
->transfer_done
>= runtime
->period_size
) {
567 subs
->transfer_done
-= runtime
->period_size
;
569 if (subs
->fmt_type
== USB_FORMAT_TYPE_II
) {
570 if (subs
->transfer_done
> 0) {
571 /* FIXME: fill-max mode is not
573 offs
-= subs
->transfer_done
;
574 counts
-= subs
->transfer_done
;
575 urb
->iso_frame_desc
[i
].length
=
577 subs
->transfer_done
= 0;
580 if (i
< ctx
->packets
) {
581 /* add a transfer delimiter */
582 urb
->iso_frame_desc
[i
].offset
=
584 urb
->iso_frame_desc
[i
].length
= 0;
585 urb
->number_of_packets
++;
590 /* finish at the frame boundary at/after the period boundary */
591 if (period_elapsed
&&
592 (i
& (subs
->packs_per_ms
- 1)) == subs
->packs_per_ms
- 1)
595 if (subs
->hwptr_done
+ offs
> runtime
->buffer_size
) {
596 /* err, the transferred area goes over buffer boundary. */
597 unsigned int len
= runtime
->buffer_size
- subs
->hwptr_done
;
598 memcpy(urb
->transfer_buffer
,
599 runtime
->dma_area
+ subs
->hwptr_done
* stride
,
601 memcpy(urb
->transfer_buffer
+ len
* stride
,
603 (offs
- len
) * stride
);
605 memcpy(urb
->transfer_buffer
,
606 runtime
->dma_area
+ subs
->hwptr_done
* stride
,
609 subs
->hwptr_done
+= offs
;
610 if (subs
->hwptr_done
>= runtime
->buffer_size
)
611 subs
->hwptr_done
-= runtime
->buffer_size
;
612 spin_unlock_irqrestore(&subs
->lock
, flags
);
613 urb
->transfer_buffer_length
= offs
* stride
;
615 snd_pcm_period_elapsed(subs
->pcm_substream
);
620 * process after playback data complete
623 static int retire_playback_urb(struct snd_usb_substream
*subs
,
624 struct snd_pcm_runtime
*runtime
,
633 static struct snd_urb_ops audio_urb_ops
[2] = {
635 .prepare
= prepare_nodata_playback_urb
,
636 .retire
= retire_playback_urb
,
637 .prepare_sync
= prepare_playback_sync_urb
,
638 .retire_sync
= retire_playback_sync_urb
,
641 .prepare
= prepare_capture_urb
,
642 .retire
= retire_capture_urb
,
643 .prepare_sync
= prepare_capture_sync_urb
,
644 .retire_sync
= retire_capture_sync_urb
,
648 static struct snd_urb_ops audio_urb_ops_high_speed
[2] = {
650 .prepare
= prepare_nodata_playback_urb
,
651 .retire
= retire_playback_urb
,
652 .prepare_sync
= prepare_playback_sync_urb_hs
,
653 .retire_sync
= retire_playback_sync_urb_hs
,
656 .prepare
= prepare_capture_urb
,
657 .retire
= retire_capture_urb
,
658 .prepare_sync
= prepare_capture_sync_urb_hs
,
659 .retire_sync
= retire_capture_sync_urb
,
664 * complete callback from data urb
666 static void snd_complete_urb(struct urb
*urb
)
668 struct snd_urb_ctx
*ctx
= urb
->context
;
669 struct snd_usb_substream
*subs
= ctx
->subs
;
670 struct snd_pcm_substream
*substream
= ctx
->subs
->pcm_substream
;
673 if ((subs
->running
&& subs
->ops
.retire(subs
, substream
->runtime
, urb
)) ||
674 ! subs
->running
|| /* can be stopped during retire callback */
675 (err
= subs
->ops
.prepare(subs
, substream
->runtime
, urb
)) < 0 ||
676 (err
= usb_submit_urb(urb
, GFP_ATOMIC
)) < 0) {
677 clear_bit(ctx
->index
, &subs
->active_mask
);
679 snd_printd(KERN_ERR
"cannot submit urb (err = %d)\n", err
);
680 snd_pcm_stop(substream
, SNDRV_PCM_STATE_XRUN
);
687 * complete callback from sync urb
689 static void snd_complete_sync_urb(struct urb
*urb
)
691 struct snd_urb_ctx
*ctx
= urb
->context
;
692 struct snd_usb_substream
*subs
= ctx
->subs
;
693 struct snd_pcm_substream
*substream
= ctx
->subs
->pcm_substream
;
696 if ((subs
->running
&& subs
->ops
.retire_sync(subs
, substream
->runtime
, urb
)) ||
697 ! subs
->running
|| /* can be stopped during retire callback */
698 (err
= subs
->ops
.prepare_sync(subs
, substream
->runtime
, urb
)) < 0 ||
699 (err
= usb_submit_urb(urb
, GFP_ATOMIC
)) < 0) {
700 clear_bit(ctx
->index
+ 16, &subs
->active_mask
);
702 snd_printd(KERN_ERR
"cannot submit sync urb (err = %d)\n", err
);
703 snd_pcm_stop(substream
, SNDRV_PCM_STATE_XRUN
);
709 /* get the physical page pointer at the given offset */
710 static struct page
*snd_pcm_get_vmalloc_page(struct snd_pcm_substream
*subs
,
711 unsigned long offset
)
713 void *pageptr
= subs
->runtime
->dma_area
+ offset
;
714 return vmalloc_to_page(pageptr
);
717 /* allocate virtual buffer; may be called more than once */
718 static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream
*subs
, size_t size
)
720 struct snd_pcm_runtime
*runtime
= subs
->runtime
;
721 if (runtime
->dma_area
) {
722 if (runtime
->dma_bytes
>= size
)
723 return 0; /* already large enough */
724 vfree(runtime
->dma_area
);
726 runtime
->dma_area
= vmalloc(size
);
727 if (! runtime
->dma_area
)
729 runtime
->dma_bytes
= size
;
733 /* free virtual buffer; may be called more than once */
734 static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream
*subs
)
736 struct snd_pcm_runtime
*runtime
= subs
->runtime
;
738 vfree(runtime
->dma_area
);
739 runtime
->dma_area
= NULL
;
745 * unlink active urbs.
747 static int deactivate_urbs(struct snd_usb_substream
*subs
, int force
, int can_sleep
)
754 if (!force
&& subs
->stream
->chip
->shutdown
) /* to be sure... */
757 async
= !can_sleep
&& async_unlink
;
759 if (! async
&& in_interrupt())
762 for (i
= 0; i
< subs
->nurbs
; i
++) {
763 if (test_bit(i
, &subs
->active_mask
)) {
764 if (! test_and_set_bit(i
, &subs
->unlink_mask
)) {
765 struct urb
*u
= subs
->dataurb
[i
].urb
;
773 if (subs
->syncpipe
) {
774 for (i
= 0; i
< SYNC_URBS
; i
++) {
775 if (test_bit(i
+16, &subs
->active_mask
)) {
776 if (! test_and_set_bit(i
+16, &subs
->unlink_mask
)) {
777 struct urb
*u
= subs
->syncurb
[i
].urb
;
790 static const char *usb_error_string(int err
)
796 return "endpoint not enabled";
798 return "endpoint stalled";
800 return "not enough bandwidth";
802 return "device disabled";
804 return "device suspended";
805 #ifndef CONFIG_USB_EHCI_SPLIT_ISO
807 return "enable CONFIG_USB_EHCI_SPLIT_ISO to play through a hub";
813 return "internal error";
815 return "unknown error";
820 * set up and start data/sync urbs
822 static int start_urbs(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
)
827 if (subs
->stream
->chip
->shutdown
)
830 for (i
= 0; i
< subs
->nurbs
; i
++) {
831 snd_assert(subs
->dataurb
[i
].urb
, return -EINVAL
);
832 if (subs
->ops
.prepare(subs
, runtime
, subs
->dataurb
[i
].urb
) < 0) {
833 snd_printk(KERN_ERR
"cannot prepare datapipe for urb %d\n", i
);
837 if (subs
->syncpipe
) {
838 for (i
= 0; i
< SYNC_URBS
; i
++) {
839 snd_assert(subs
->syncurb
[i
].urb
, return -EINVAL
);
840 if (subs
->ops
.prepare_sync(subs
, runtime
, subs
->syncurb
[i
].urb
) < 0) {
841 snd_printk(KERN_ERR
"cannot prepare syncpipe for urb %d\n", i
);
847 subs
->active_mask
= 0;
848 subs
->unlink_mask
= 0;
850 for (i
= 0; i
< subs
->nurbs
; i
++) {
851 err
= usb_submit_urb(subs
->dataurb
[i
].urb
, GFP_ATOMIC
);
853 snd_printk(KERN_ERR
"cannot submit datapipe "
854 "for urb %d, error %d: %s\n",
855 i
, err
, usb_error_string(err
));
858 set_bit(i
, &subs
->active_mask
);
860 if (subs
->syncpipe
) {
861 for (i
= 0; i
< SYNC_URBS
; i
++) {
862 err
= usb_submit_urb(subs
->syncurb
[i
].urb
, GFP_ATOMIC
);
864 snd_printk(KERN_ERR
"cannot submit syncpipe "
865 "for urb %d, error %d: %s\n",
866 i
, err
, usb_error_string(err
));
869 set_bit(i
+ 16, &subs
->active_mask
);
875 // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
876 deactivate_urbs(subs
, 0, 0);
882 * wait until all urbs are processed.
884 static int wait_clear_urbs(struct snd_usb_substream
*subs
)
886 unsigned long end_time
= jiffies
+ msecs_to_jiffies(1000);
892 for (i
= 0; i
< subs
->nurbs
; i
++) {
893 if (test_bit(i
, &subs
->active_mask
))
896 if (subs
->syncpipe
) {
897 for (i
= 0; i
< SYNC_URBS
; i
++) {
898 if (test_bit(i
+ 16, &subs
->active_mask
))
904 schedule_timeout_uninterruptible(1);
905 } while (time_before(jiffies
, end_time
));
907 snd_printk(KERN_ERR
"timeout: still %d active urbs..\n", alive
);
913 * return the current pcm pointer. just return the hwptr_done value.
915 static snd_pcm_uframes_t
snd_usb_pcm_pointer(struct snd_pcm_substream
*substream
)
917 struct snd_usb_substream
*subs
;
918 snd_pcm_uframes_t hwptr_done
;
920 subs
= (struct snd_usb_substream
*)substream
->runtime
->private_data
;
921 spin_lock(&subs
->lock
);
922 hwptr_done
= subs
->hwptr_done
;
923 spin_unlock(&subs
->lock
);
929 * start/stop playback substream
931 static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream
*substream
,
934 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
937 case SNDRV_PCM_TRIGGER_START
:
938 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
939 subs
->ops
.prepare
= prepare_playback_urb
;
941 case SNDRV_PCM_TRIGGER_STOP
:
942 return deactivate_urbs(subs
, 0, 0);
943 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
944 subs
->ops
.prepare
= prepare_nodata_playback_urb
;
952 * start/stop capture substream
954 static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream
*substream
,
957 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
960 case SNDRV_PCM_TRIGGER_START
:
961 subs
->ops
.retire
= retire_capture_urb
;
962 return start_urbs(subs
, substream
->runtime
);
963 case SNDRV_PCM_TRIGGER_STOP
:
964 return deactivate_urbs(subs
, 0, 0);
965 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
966 subs
->ops
.retire
= retire_paused_capture_urb
;
968 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
969 subs
->ops
.retire
= retire_capture_urb
;
980 static void release_urb_ctx(struct snd_urb_ctx
*u
)
984 usb_buffer_free(u
->subs
->dev
, u
->buffer_size
,
985 u
->urb
->transfer_buffer
,
986 u
->urb
->transfer_dma
);
987 usb_free_urb(u
->urb
);
993 * release a substream
995 static void release_substream_urbs(struct snd_usb_substream
*subs
, int force
)
999 /* stop urbs (to be sure) */
1000 deactivate_urbs(subs
, force
, 1);
1001 wait_clear_urbs(subs
);
1003 for (i
= 0; i
< MAX_URBS
; i
++)
1004 release_urb_ctx(&subs
->dataurb
[i
]);
1005 for (i
= 0; i
< SYNC_URBS
; i
++)
1006 release_urb_ctx(&subs
->syncurb
[i
]);
1007 usb_buffer_free(subs
->dev
, SYNC_URBS
* 4,
1008 subs
->syncbuf
, subs
->sync_dma
);
1009 subs
->syncbuf
= NULL
;
1014 * initialize a substream for plaback/capture
1016 static int init_substream_urbs(struct snd_usb_substream
*subs
, unsigned int period_bytes
,
1017 unsigned int rate
, unsigned int frame_bits
)
1019 unsigned int maxsize
, n
, i
;
1020 int is_playback
= subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
;
1021 unsigned int npacks
[MAX_URBS
], urb_packs
, total_packs
, packs_per_ms
;
1023 /* calculate the frequency in 16.16 format */
1024 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
1025 subs
->freqn
= get_usb_full_speed_rate(rate
);
1027 subs
->freqn
= get_usb_high_speed_rate(rate
);
1028 subs
->freqm
= subs
->freqn
;
1029 /* calculate max. frequency */
1030 if (subs
->maxpacksize
) {
1031 /* whatever fits into a max. size packet */
1032 maxsize
= subs
->maxpacksize
;
1033 subs
->freqmax
= (maxsize
/ (frame_bits
>> 3))
1034 << (16 - subs
->datainterval
);
1036 /* no max. packet size: just take 25% higher than nominal */
1037 subs
->freqmax
= subs
->freqn
+ (subs
->freqn
>> 2);
1038 maxsize
= ((subs
->freqmax
+ 0xffff) * (frame_bits
>> 3))
1039 >> (16 - subs
->datainterval
);
1044 subs
->curpacksize
= subs
->maxpacksize
;
1046 subs
->curpacksize
= maxsize
;
1048 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_HIGH
)
1049 packs_per_ms
= 8 >> subs
->datainterval
;
1052 subs
->packs_per_ms
= packs_per_ms
;
1055 urb_packs
= nrpacks
;
1056 urb_packs
= max(urb_packs
, (unsigned int)MIN_PACKS_URB
);
1057 urb_packs
= min(urb_packs
, (unsigned int)MAX_PACKS
);
1060 urb_packs
*= packs_per_ms
;
1062 /* decide how many packets to be used */
1064 unsigned int minsize
;
1065 /* determine how small a packet can be */
1066 minsize
= (subs
->freqn
>> (16 - subs
->datainterval
))
1067 * (frame_bits
>> 3);
1068 /* with sync from device, assume it can be 12% lower */
1070 minsize
-= minsize
>> 3;
1071 minsize
= max(minsize
, 1u);
1072 total_packs
= (period_bytes
+ minsize
- 1) / minsize
;
1073 /* round up to multiple of packs_per_ms */
1074 total_packs
= (total_packs
+ packs_per_ms
- 1)
1075 & ~(packs_per_ms
- 1);
1076 /* we need at least two URBs for queueing */
1077 if (total_packs
< 2 * MIN_PACKS_URB
* packs_per_ms
)
1078 total_packs
= 2 * MIN_PACKS_URB
* packs_per_ms
;
1080 total_packs
= MAX_URBS
* urb_packs
;
1082 subs
->nurbs
= (total_packs
+ urb_packs
- 1) / urb_packs
;
1083 if (subs
->nurbs
> MAX_URBS
) {
1085 subs
->nurbs
= MAX_URBS
;
1086 total_packs
= MAX_URBS
* urb_packs
;
1089 for (i
= 0; i
< subs
->nurbs
; i
++) {
1090 npacks
[i
] = n
> urb_packs
? urb_packs
: n
;
1093 if (subs
->nurbs
<= 1) {
1094 /* too little - we need at least two packets
1095 * to ensure contiguous playback/capture
1098 npacks
[0] = (total_packs
+ 1) / 2;
1099 npacks
[1] = total_packs
- npacks
[0];
1100 } else if (npacks
[subs
->nurbs
-1] < MIN_PACKS_URB
* packs_per_ms
) {
1101 /* the last packet is too small.. */
1102 if (subs
->nurbs
> 2) {
1103 /* merge to the first one */
1104 npacks
[0] += npacks
[subs
->nurbs
- 1];
1109 npacks
[0] = (total_packs
+ 1) / 2;
1110 npacks
[1] = total_packs
- npacks
[0];
1114 /* allocate and initialize data urbs */
1115 for (i
= 0; i
< subs
->nurbs
; i
++) {
1116 struct snd_urb_ctx
*u
= &subs
->dataurb
[i
];
1119 u
->packets
= npacks
[i
];
1120 u
->buffer_size
= maxsize
* u
->packets
;
1121 if (subs
->fmt_type
== USB_FORMAT_TYPE_II
)
1122 u
->packets
++; /* for transfer delimiter */
1123 u
->urb
= usb_alloc_urb(u
->packets
, GFP_KERNEL
);
1126 u
->urb
->transfer_buffer
=
1127 usb_buffer_alloc(subs
->dev
, u
->buffer_size
, GFP_KERNEL
,
1128 &u
->urb
->transfer_dma
);
1129 if (! u
->urb
->transfer_buffer
)
1131 u
->urb
->pipe
= subs
->datapipe
;
1132 u
->urb
->transfer_flags
= URB_ISO_ASAP
| URB_NO_TRANSFER_DMA_MAP
;
1133 u
->urb
->interval
= 1 << subs
->datainterval
;
1134 u
->urb
->context
= u
;
1135 u
->urb
->complete
= snd_complete_urb
;
1138 if (subs
->syncpipe
) {
1139 /* allocate and initialize sync urbs */
1140 subs
->syncbuf
= usb_buffer_alloc(subs
->dev
, SYNC_URBS
* 4,
1141 GFP_KERNEL
, &subs
->sync_dma
);
1142 if (! subs
->syncbuf
)
1144 for (i
= 0; i
< SYNC_URBS
; i
++) {
1145 struct snd_urb_ctx
*u
= &subs
->syncurb
[i
];
1149 u
->urb
= usb_alloc_urb(1, GFP_KERNEL
);
1152 u
->urb
->transfer_buffer
= subs
->syncbuf
+ i
* 4;
1153 u
->urb
->transfer_dma
= subs
->sync_dma
+ i
* 4;
1154 u
->urb
->transfer_buffer_length
= 4;
1155 u
->urb
->pipe
= subs
->syncpipe
;
1156 u
->urb
->transfer_flags
= URB_ISO_ASAP
|
1157 URB_NO_TRANSFER_DMA_MAP
;
1158 u
->urb
->number_of_packets
= 1;
1159 u
->urb
->interval
= 1 << subs
->syncinterval
;
1160 u
->urb
->context
= u
;
1161 u
->urb
->complete
= snd_complete_sync_urb
;
1167 release_substream_urbs(subs
, 0);
1173 * find a matching audio format
1175 static struct audioformat
*find_format(struct snd_usb_substream
*subs
, unsigned int format
,
1176 unsigned int rate
, unsigned int channels
)
1178 struct list_head
*p
;
1179 struct audioformat
*found
= NULL
;
1180 int cur_attr
= 0, attr
;
1182 list_for_each(p
, &subs
->fmt_list
) {
1183 struct audioformat
*fp
;
1184 fp
= list_entry(p
, struct audioformat
, list
);
1185 if (fp
->format
!= format
|| fp
->channels
!= channels
)
1187 if (rate
< fp
->rate_min
|| rate
> fp
->rate_max
)
1189 if (! (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)) {
1191 for (i
= 0; i
< fp
->nr_rates
; i
++)
1192 if (fp
->rate_table
[i
] == rate
)
1194 if (i
>= fp
->nr_rates
)
1197 attr
= fp
->ep_attr
& EP_ATTR_MASK
;
1203 /* avoid async out and adaptive in if the other method
1204 * supports the same format.
1205 * this is a workaround for the case like
1206 * M-audio audiophile USB.
1208 if (attr
!= cur_attr
) {
1209 if ((attr
== EP_ATTR_ASYNC
&&
1210 subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) ||
1211 (attr
== EP_ATTR_ADAPTIVE
&&
1212 subs
->direction
== SNDRV_PCM_STREAM_CAPTURE
))
1214 if ((cur_attr
== EP_ATTR_ASYNC
&&
1215 subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) ||
1216 (cur_attr
== EP_ATTR_ADAPTIVE
&&
1217 subs
->direction
== SNDRV_PCM_STREAM_CAPTURE
)) {
1223 /* find the format with the largest max. packet size */
1224 if (fp
->maxpacksize
> found
->maxpacksize
) {
1234 * initialize the picth control and sample rate
1236 static int init_usb_pitch(struct usb_device
*dev
, int iface
,
1237 struct usb_host_interface
*alts
,
1238 struct audioformat
*fmt
)
1241 unsigned char data
[1];
1244 ep
= get_endpoint(alts
, 0)->bEndpointAddress
;
1245 /* if endpoint has pitch control, enable it */
1246 if (fmt
->attributes
& EP_CS_ATTR_PITCH_CONTROL
) {
1248 if ((err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), SET_CUR
,
1249 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_OUT
,
1250 PITCH_CONTROL
<< 8, ep
, data
, 1, 1000)) < 0) {
1251 snd_printk(KERN_ERR
"%d:%d:%d: cannot set enable PITCH\n",
1252 dev
->devnum
, iface
, ep
);
1259 static int init_usb_sample_rate(struct usb_device
*dev
, int iface
,
1260 struct usb_host_interface
*alts
,
1261 struct audioformat
*fmt
, int rate
)
1264 unsigned char data
[3];
1267 ep
= get_endpoint(alts
, 0)->bEndpointAddress
;
1268 /* if endpoint has sampling rate control, set it */
1269 if (fmt
->attributes
& EP_CS_ATTR_SAMPLE_RATE
) {
1272 data
[1] = rate
>> 8;
1273 data
[2] = rate
>> 16;
1274 if ((err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), SET_CUR
,
1275 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_OUT
,
1276 SAMPLING_FREQ_CONTROL
<< 8, ep
, data
, 3, 1000)) < 0) {
1277 snd_printk(KERN_ERR
"%d:%d:%d: cannot set freq %d to ep 0x%x\n",
1278 dev
->devnum
, iface
, fmt
->altsetting
, rate
, ep
);
1281 if ((err
= snd_usb_ctl_msg(dev
, usb_rcvctrlpipe(dev
, 0), GET_CUR
,
1282 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_IN
,
1283 SAMPLING_FREQ_CONTROL
<< 8, ep
, data
, 3, 1000)) < 0) {
1284 snd_printk(KERN_WARNING
"%d:%d:%d: cannot get freq at ep 0x%x\n",
1285 dev
->devnum
, iface
, fmt
->altsetting
, ep
);
1286 return 0; /* some devices don't support reading */
1288 crate
= data
[0] | (data
[1] << 8) | (data
[2] << 16);
1289 if (crate
!= rate
) {
1290 snd_printd(KERN_WARNING
"current rate %d is different from the runtime rate %d\n", crate
, rate
);
1291 // runtime->rate = crate;
1298 * find a matching format and set up the interface
1300 static int set_format(struct snd_usb_substream
*subs
, struct audioformat
*fmt
)
1302 struct usb_device
*dev
= subs
->dev
;
1303 struct usb_host_interface
*alts
;
1304 struct usb_interface_descriptor
*altsd
;
1305 struct usb_interface
*iface
;
1306 unsigned int ep
, attr
;
1307 int is_playback
= subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
;
1310 iface
= usb_ifnum_to_if(dev
, fmt
->iface
);
1311 snd_assert(iface
, return -EINVAL
);
1312 alts
= &iface
->altsetting
[fmt
->altset_idx
];
1313 altsd
= get_iface_desc(alts
);
1314 snd_assert(altsd
->bAlternateSetting
== fmt
->altsetting
, return -EINVAL
);
1316 if (fmt
== subs
->cur_audiofmt
)
1319 /* close the old interface */
1320 if (subs
->interface
>= 0 && subs
->interface
!= fmt
->iface
) {
1321 usb_set_interface(subs
->dev
, subs
->interface
, 0);
1322 subs
->interface
= -1;
1327 if (subs
->interface
!= fmt
->iface
|| subs
->format
!= fmt
->altset_idx
) {
1328 if (usb_set_interface(dev
, fmt
->iface
, fmt
->altsetting
) < 0) {
1329 snd_printk(KERN_ERR
"%d:%d:%d: usb_set_interface failed\n",
1330 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1333 snd_printdd(KERN_INFO
"setting usb interface %d:%d\n", fmt
->iface
, fmt
->altsetting
);
1334 subs
->interface
= fmt
->iface
;
1335 subs
->format
= fmt
->altset_idx
;
1338 /* create a data pipe */
1339 ep
= fmt
->endpoint
& USB_ENDPOINT_NUMBER_MASK
;
1341 subs
->datapipe
= usb_sndisocpipe(dev
, ep
);
1343 subs
->datapipe
= usb_rcvisocpipe(dev
, ep
);
1344 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_HIGH
&&
1345 get_endpoint(alts
, 0)->bInterval
>= 1 &&
1346 get_endpoint(alts
, 0)->bInterval
<= 4)
1347 subs
->datainterval
= get_endpoint(alts
, 0)->bInterval
- 1;
1349 subs
->datainterval
= 0;
1350 subs
->syncpipe
= subs
->syncinterval
= 0;
1351 subs
->maxpacksize
= fmt
->maxpacksize
;
1354 /* we need a sync pipe in async OUT or adaptive IN mode */
1355 /* check the number of EP, since some devices have broken
1356 * descriptors which fool us. if it has only one EP,
1357 * assume it as adaptive-out or sync-in.
1359 attr
= fmt
->ep_attr
& EP_ATTR_MASK
;
1360 if (((is_playback
&& attr
== EP_ATTR_ASYNC
) ||
1361 (! is_playback
&& attr
== EP_ATTR_ADAPTIVE
)) &&
1362 altsd
->bNumEndpoints
>= 2) {
1363 /* check sync-pipe endpoint */
1364 /* ... and check descriptor size before accessing bSynchAddress
1365 because there is a version of the SB Audigy 2 NX firmware lacking
1366 the audio fields in the endpoint descriptors */
1367 if ((get_endpoint(alts
, 1)->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) != 0x01 ||
1368 (get_endpoint(alts
, 1)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1369 get_endpoint(alts
, 1)->bSynchAddress
!= 0)) {
1370 snd_printk(KERN_ERR
"%d:%d:%d : invalid synch pipe\n",
1371 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1374 ep
= get_endpoint(alts
, 1)->bEndpointAddress
;
1375 if (get_endpoint(alts
, 0)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1376 (( is_playback
&& ep
!= (unsigned int)(get_endpoint(alts
, 0)->bSynchAddress
| USB_DIR_IN
)) ||
1377 (!is_playback
&& ep
!= (unsigned int)(get_endpoint(alts
, 0)->bSynchAddress
& ~USB_DIR_IN
)))) {
1378 snd_printk(KERN_ERR
"%d:%d:%d : invalid synch pipe\n",
1379 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1382 ep
&= USB_ENDPOINT_NUMBER_MASK
;
1384 subs
->syncpipe
= usb_rcvisocpipe(dev
, ep
);
1386 subs
->syncpipe
= usb_sndisocpipe(dev
, ep
);
1387 if (get_endpoint(alts
, 1)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1388 get_endpoint(alts
, 1)->bRefresh
>= 1 &&
1389 get_endpoint(alts
, 1)->bRefresh
<= 9)
1390 subs
->syncinterval
= get_endpoint(alts
, 1)->bRefresh
;
1391 else if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
1392 subs
->syncinterval
= 1;
1393 else if (get_endpoint(alts
, 1)->bInterval
>= 1 &&
1394 get_endpoint(alts
, 1)->bInterval
<= 16)
1395 subs
->syncinterval
= get_endpoint(alts
, 1)->bInterval
- 1;
1397 subs
->syncinterval
= 3;
1400 /* always fill max packet size */
1401 if (fmt
->attributes
& EP_CS_ATTR_FILL_MAX
)
1404 if ((err
= init_usb_pitch(dev
, subs
->interface
, alts
, fmt
)) < 0)
1407 subs
->cur_audiofmt
= fmt
;
1410 printk("setting done: format = %d, rate = %d, channels = %d\n",
1411 fmt
->format
, fmt
->rate
, fmt
->channels
);
1412 printk(" datapipe = 0x%0x, syncpipe = 0x%0x\n",
1413 subs
->datapipe
, subs
->syncpipe
);
1420 * hw_params callback
1422 * allocate a buffer and set the given audio format.
1424 * so far we use a physically linear buffer although packetize transfer
1425 * doesn't need a continuous area.
1426 * if sg buffer is supported on the later version of alsa, we'll follow
1429 static int snd_usb_hw_params(struct snd_pcm_substream
*substream
,
1430 struct snd_pcm_hw_params
*hw_params
)
1432 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
1433 struct audioformat
*fmt
;
1434 unsigned int channels
, rate
, format
;
1437 ret
= snd_pcm_alloc_vmalloc_buffer(substream
,
1438 params_buffer_bytes(hw_params
));
1442 format
= params_format(hw_params
);
1443 rate
= params_rate(hw_params
);
1444 channels
= params_channels(hw_params
);
1445 fmt
= find_format(subs
, format
, rate
, channels
);
1447 snd_printd(KERN_DEBUG
"cannot set format: format = 0x%x, rate = %d, channels = %d\n",
1448 format
, rate
, channels
);
1452 changed
= subs
->cur_audiofmt
!= fmt
||
1453 subs
->period_bytes
!= params_period_bytes(hw_params
) ||
1454 subs
->cur_rate
!= rate
;
1455 if ((ret
= set_format(subs
, fmt
)) < 0)
1458 if (subs
->cur_rate
!= rate
) {
1459 struct usb_host_interface
*alts
;
1460 struct usb_interface
*iface
;
1461 iface
= usb_ifnum_to_if(subs
->dev
, fmt
->iface
);
1462 alts
= &iface
->altsetting
[fmt
->altset_idx
];
1463 ret
= init_usb_sample_rate(subs
->dev
, subs
->interface
, alts
, fmt
, rate
);
1466 subs
->cur_rate
= rate
;
1470 /* format changed */
1471 release_substream_urbs(subs
, 0);
1472 /* influenced: period_bytes, channels, rate, format, */
1473 ret
= init_substream_urbs(subs
, params_period_bytes(hw_params
),
1474 params_rate(hw_params
),
1475 snd_pcm_format_physical_width(params_format(hw_params
)) * params_channels(hw_params
));
1484 * reset the audio format and release the buffer
1486 static int snd_usb_hw_free(struct snd_pcm_substream
*substream
)
1488 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
1490 subs
->cur_audiofmt
= NULL
;
1492 subs
->period_bytes
= 0;
1493 if (!subs
->stream
->chip
->shutdown
)
1494 release_substream_urbs(subs
, 0);
1495 return snd_pcm_free_vmalloc_buffer(substream
);
1501 * only a few subtle things...
1503 static int snd_usb_pcm_prepare(struct snd_pcm_substream
*substream
)
1505 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1506 struct snd_usb_substream
*subs
= runtime
->private_data
;
1508 if (! subs
->cur_audiofmt
) {
1509 snd_printk(KERN_ERR
"usbaudio: no format is specified!\n");
1513 /* some unit conversions in runtime */
1514 subs
->maxframesize
= bytes_to_frames(runtime
, subs
->maxpacksize
);
1515 subs
->curframesize
= bytes_to_frames(runtime
, subs
->curpacksize
);
1517 /* reset the pointer */
1518 subs
->hwptr_done
= 0;
1519 subs
->transfer_done
= 0;
1522 /* clear urbs (to be sure) */
1523 deactivate_urbs(subs
, 0, 1);
1524 wait_clear_urbs(subs
);
1526 /* for playback, submit the URBs now; otherwise, the first hwptr_done
1527 * updates for all URBs would happen at the same time when starting */
1528 if (subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) {
1529 subs
->ops
.prepare
= prepare_nodata_playback_urb
;
1530 return start_urbs(subs
, runtime
);
1535 static struct snd_pcm_hardware snd_usb_hardware
=
1537 .info
= SNDRV_PCM_INFO_MMAP
|
1538 SNDRV_PCM_INFO_MMAP_VALID
|
1539 SNDRV_PCM_INFO_BATCH
|
1540 SNDRV_PCM_INFO_INTERLEAVED
|
1541 SNDRV_PCM_INFO_BLOCK_TRANSFER
|
1542 SNDRV_PCM_INFO_PAUSE
,
1543 .buffer_bytes_max
= 1024 * 1024,
1544 .period_bytes_min
= 64,
1545 .period_bytes_max
= 512 * 1024,
1547 .periods_max
= 1024,
1554 #ifdef HW_CONST_DEBUG
1555 #define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
1557 #define hwc_debug(fmt, args...) /**/
1560 static int hw_check_valid_format(struct snd_pcm_hw_params
*params
, struct audioformat
*fp
)
1562 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
);
1563 struct snd_interval
*ct
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
1564 struct snd_mask
*fmts
= hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
);
1566 /* check the format */
1567 if (! snd_mask_test(fmts
, fp
->format
)) {
1568 hwc_debug(" > check: no supported format %d\n", fp
->format
);
1571 /* check the channels */
1572 if (fp
->channels
< ct
->min
|| fp
->channels
> ct
->max
) {
1573 hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp
->channels
, ct
->min
, ct
->max
);
1576 /* check the rate is within the range */
1577 if (fp
->rate_min
> it
->max
|| (fp
->rate_min
== it
->max
&& it
->openmax
)) {
1578 hwc_debug(" > check: rate_min %d > max %d\n", fp
->rate_min
, it
->max
);
1581 if (fp
->rate_max
< it
->min
|| (fp
->rate_max
== it
->min
&& it
->openmin
)) {
1582 hwc_debug(" > check: rate_max %d < min %d\n", fp
->rate_max
, it
->min
);
1588 static int hw_rule_rate(struct snd_pcm_hw_params
*params
,
1589 struct snd_pcm_hw_rule
*rule
)
1591 struct snd_usb_substream
*subs
= rule
->private;
1592 struct list_head
*p
;
1593 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
);
1594 unsigned int rmin
, rmax
;
1597 hwc_debug("hw_rule_rate: (%d,%d)\n", it
->min
, it
->max
);
1600 list_for_each(p
, &subs
->fmt_list
) {
1601 struct audioformat
*fp
;
1602 fp
= list_entry(p
, struct audioformat
, list
);
1603 if (! hw_check_valid_format(params
, fp
))
1606 if (rmin
> fp
->rate_min
)
1607 rmin
= fp
->rate_min
;
1608 if (rmax
< fp
->rate_max
)
1609 rmax
= fp
->rate_max
;
1611 rmin
= fp
->rate_min
;
1612 rmax
= fp
->rate_max
;
1617 hwc_debug(" --> get empty\n");
1623 if (it
->min
< rmin
) {
1628 if (it
->max
> rmax
) {
1633 if (snd_interval_checkempty(it
)) {
1637 hwc_debug(" --> (%d, %d) (changed = %d)\n", it
->min
, it
->max
, changed
);
1642 static int hw_rule_channels(struct snd_pcm_hw_params
*params
,
1643 struct snd_pcm_hw_rule
*rule
)
1645 struct snd_usb_substream
*subs
= rule
->private;
1646 struct list_head
*p
;
1647 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
1648 unsigned int rmin
, rmax
;
1651 hwc_debug("hw_rule_channels: (%d,%d)\n", it
->min
, it
->max
);
1654 list_for_each(p
, &subs
->fmt_list
) {
1655 struct audioformat
*fp
;
1656 fp
= list_entry(p
, struct audioformat
, list
);
1657 if (! hw_check_valid_format(params
, fp
))
1660 if (rmin
> fp
->channels
)
1661 rmin
= fp
->channels
;
1662 if (rmax
< fp
->channels
)
1663 rmax
= fp
->channels
;
1665 rmin
= fp
->channels
;
1666 rmax
= fp
->channels
;
1671 hwc_debug(" --> get empty\n");
1677 if (it
->min
< rmin
) {
1682 if (it
->max
> rmax
) {
1687 if (snd_interval_checkempty(it
)) {
1691 hwc_debug(" --> (%d, %d) (changed = %d)\n", it
->min
, it
->max
, changed
);
1695 static int hw_rule_format(struct snd_pcm_hw_params
*params
,
1696 struct snd_pcm_hw_rule
*rule
)
1698 struct snd_usb_substream
*subs
= rule
->private;
1699 struct list_head
*p
;
1700 struct snd_mask
*fmt
= hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
);
1705 hwc_debug("hw_rule_format: %x:%x\n", fmt
->bits
[0], fmt
->bits
[1]);
1707 list_for_each(p
, &subs
->fmt_list
) {
1708 struct audioformat
*fp
;
1709 fp
= list_entry(p
, struct audioformat
, list
);
1710 if (! hw_check_valid_format(params
, fp
))
1712 fbits
|= (1ULL << fp
->format
);
1715 oldbits
[0] = fmt
->bits
[0];
1716 oldbits
[1] = fmt
->bits
[1];
1717 fmt
->bits
[0] &= (u32
)fbits
;
1718 fmt
->bits
[1] &= (u32
)(fbits
>> 32);
1719 if (! fmt
->bits
[0] && ! fmt
->bits
[1]) {
1720 hwc_debug(" --> get empty\n");
1723 changed
= (oldbits
[0] != fmt
->bits
[0] || oldbits
[1] != fmt
->bits
[1]);
1724 hwc_debug(" --> %x:%x (changed = %d)\n", fmt
->bits
[0], fmt
->bits
[1], changed
);
1731 * check whether the registered audio formats need special hw-constraints
1733 static int check_hw_params_convention(struct snd_usb_substream
*subs
)
1738 u32 cmaster
, rmaster
;
1739 u32 rate_min
= 0, rate_max
= 0;
1740 struct list_head
*p
;
1743 channels
= kcalloc(MAX_MASK
, sizeof(u32
), GFP_KERNEL
);
1744 rates
= kcalloc(MAX_MASK
, sizeof(u32
), GFP_KERNEL
);
1746 list_for_each(p
, &subs
->fmt_list
) {
1747 struct audioformat
*f
;
1748 f
= list_entry(p
, struct audioformat
, list
);
1749 /* unconventional channels? */
1750 if (f
->channels
> 32)
1752 /* continuous rate min/max matches? */
1753 if (f
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
1754 if (rate_min
&& f
->rate_min
!= rate_min
)
1756 if (rate_max
&& f
->rate_max
!= rate_max
)
1758 rate_min
= f
->rate_min
;
1759 rate_max
= f
->rate_max
;
1761 /* combination of continuous rates and fixed rates? */
1762 if (rates
[f
->format
] & SNDRV_PCM_RATE_CONTINUOUS
) {
1763 if (f
->rates
!= rates
[f
->format
])
1766 if (f
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
1767 if (rates
[f
->format
] && rates
[f
->format
] != f
->rates
)
1770 channels
[f
->format
] |= (1 << f
->channels
);
1771 rates
[f
->format
] |= f
->rates
;
1776 /* check whether channels and rates match for all formats */
1777 cmaster
= rmaster
= 0;
1778 for (i
= 0; i
< MAX_MASK
; i
++) {
1779 if (cmaster
!= channels
[i
] && cmaster
&& channels
[i
])
1781 if (rmaster
!= rates
[i
] && rmaster
&& rates
[i
])
1784 cmaster
= channels
[i
];
1788 /* check whether channels match for all distinct rates */
1789 memset(channels
, 0, MAX_MASK
* sizeof(u32
));
1790 list_for_each(p
, &subs
->fmt_list
) {
1791 struct audioformat
*f
;
1792 f
= list_entry(p
, struct audioformat
, list
);
1793 if (f
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)
1795 for (i
= 0; i
< 32; i
++) {
1796 if (f
->rates
& (1 << i
))
1797 channels
[i
] |= (1 << f
->channels
);
1801 for (i
= 0; i
< 32; i
++) {
1802 if (cmaster
!= channels
[i
] && cmaster
&& channels
[i
])
1805 cmaster
= channels
[i
];
1816 * If the device supports unusual bit rates, does the request meet these?
1818 static int snd_usb_pcm_check_knot(struct snd_pcm_runtime
*runtime
,
1819 struct snd_usb_substream
*subs
)
1821 struct list_head
*p
;
1822 struct snd_pcm_hw_constraint_list constraints_rates
;
1825 list_for_each(p
, &subs
->fmt_list
) {
1826 struct audioformat
*fp
;
1827 fp
= list_entry(p
, struct audioformat
, list
);
1829 if (!fp
->needs_knot
)
1832 constraints_rates
.count
= fp
->nr_rates
;
1833 constraints_rates
.list
= fp
->rate_table
;
1834 constraints_rates
.mask
= 0;
1836 err
= snd_pcm_hw_constraint_list(runtime
, 0,
1837 SNDRV_PCM_HW_PARAM_RATE
,
1838 &constraints_rates
);
1849 * set up the runtime hardware information.
1852 static int setup_hw_info(struct snd_pcm_runtime
*runtime
, struct snd_usb_substream
*subs
)
1854 struct list_head
*p
;
1857 runtime
->hw
.formats
= subs
->formats
;
1859 runtime
->hw
.rate_min
= 0x7fffffff;
1860 runtime
->hw
.rate_max
= 0;
1861 runtime
->hw
.channels_min
= 256;
1862 runtime
->hw
.channels_max
= 0;
1863 runtime
->hw
.rates
= 0;
1864 /* check min/max rates and channels */
1865 list_for_each(p
, &subs
->fmt_list
) {
1866 struct audioformat
*fp
;
1867 fp
= list_entry(p
, struct audioformat
, list
);
1868 runtime
->hw
.rates
|= fp
->rates
;
1869 if (runtime
->hw
.rate_min
> fp
->rate_min
)
1870 runtime
->hw
.rate_min
= fp
->rate_min
;
1871 if (runtime
->hw
.rate_max
< fp
->rate_max
)
1872 runtime
->hw
.rate_max
= fp
->rate_max
;
1873 if (runtime
->hw
.channels_min
> fp
->channels
)
1874 runtime
->hw
.channels_min
= fp
->channels
;
1875 if (runtime
->hw
.channels_max
< fp
->channels
)
1876 runtime
->hw
.channels_max
= fp
->channels
;
1877 if (fp
->fmt_type
== USB_FORMAT_TYPE_II
&& fp
->frame_size
> 0) {
1878 /* FIXME: there might be more than one audio formats... */
1879 runtime
->hw
.period_bytes_min
= runtime
->hw
.period_bytes_max
=
1884 /* set the period time minimum 1ms */
1885 snd_pcm_hw_constraint_minmax(runtime
, SNDRV_PCM_HW_PARAM_PERIOD_TIME
,
1886 1000 * MIN_PACKS_URB
,
1887 /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX
);
1889 if (check_hw_params_convention(subs
)) {
1890 hwc_debug("setting extra hw constraints...\n");
1891 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
,
1893 SNDRV_PCM_HW_PARAM_FORMAT
,
1894 SNDRV_PCM_HW_PARAM_CHANNELS
,
1897 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_CHANNELS
,
1898 hw_rule_channels
, subs
,
1899 SNDRV_PCM_HW_PARAM_FORMAT
,
1900 SNDRV_PCM_HW_PARAM_RATE
,
1903 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_FORMAT
,
1904 hw_rule_format
, subs
,
1905 SNDRV_PCM_HW_PARAM_RATE
,
1906 SNDRV_PCM_HW_PARAM_CHANNELS
,
1909 if ((err
= snd_usb_pcm_check_knot(runtime
, subs
)) < 0)
1915 static int snd_usb_pcm_open(struct snd_pcm_substream
*substream
, int direction
)
1917 struct snd_usb_stream
*as
= snd_pcm_substream_chip(substream
);
1918 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1919 struct snd_usb_substream
*subs
= &as
->substream
[direction
];
1921 subs
->interface
= -1;
1923 runtime
->hw
= snd_usb_hardware
;
1924 runtime
->private_data
= subs
;
1925 subs
->pcm_substream
= substream
;
1926 return setup_hw_info(runtime
, subs
);
1929 static int snd_usb_pcm_close(struct snd_pcm_substream
*substream
, int direction
)
1931 struct snd_usb_stream
*as
= snd_pcm_substream_chip(substream
);
1932 struct snd_usb_substream
*subs
= &as
->substream
[direction
];
1934 if (subs
->interface
>= 0) {
1935 usb_set_interface(subs
->dev
, subs
->interface
, 0);
1936 subs
->interface
= -1;
1938 subs
->pcm_substream
= NULL
;
1942 static int snd_usb_playback_open(struct snd_pcm_substream
*substream
)
1944 return snd_usb_pcm_open(substream
, SNDRV_PCM_STREAM_PLAYBACK
);
1947 static int snd_usb_playback_close(struct snd_pcm_substream
*substream
)
1949 return snd_usb_pcm_close(substream
, SNDRV_PCM_STREAM_PLAYBACK
);
1952 static int snd_usb_capture_open(struct snd_pcm_substream
*substream
)
1954 return snd_usb_pcm_open(substream
, SNDRV_PCM_STREAM_CAPTURE
);
1957 static int snd_usb_capture_close(struct snd_pcm_substream
*substream
)
1959 return snd_usb_pcm_close(substream
, SNDRV_PCM_STREAM_CAPTURE
);
1962 static struct snd_pcm_ops snd_usb_playback_ops
= {
1963 .open
= snd_usb_playback_open
,
1964 .close
= snd_usb_playback_close
,
1965 .ioctl
= snd_pcm_lib_ioctl
,
1966 .hw_params
= snd_usb_hw_params
,
1967 .hw_free
= snd_usb_hw_free
,
1968 .prepare
= snd_usb_pcm_prepare
,
1969 .trigger
= snd_usb_pcm_playback_trigger
,
1970 .pointer
= snd_usb_pcm_pointer
,
1971 .page
= snd_pcm_get_vmalloc_page
,
1974 static struct snd_pcm_ops snd_usb_capture_ops
= {
1975 .open
= snd_usb_capture_open
,
1976 .close
= snd_usb_capture_close
,
1977 .ioctl
= snd_pcm_lib_ioctl
,
1978 .hw_params
= snd_usb_hw_params
,
1979 .hw_free
= snd_usb_hw_free
,
1980 .prepare
= snd_usb_pcm_prepare
,
1981 .trigger
= snd_usb_pcm_capture_trigger
,
1982 .pointer
= snd_usb_pcm_pointer
,
1983 .page
= snd_pcm_get_vmalloc_page
,
1993 * combine bytes and get an integer value
1995 unsigned int snd_usb_combine_bytes(unsigned char *bytes
, int size
)
1998 case 1: return *bytes
;
1999 case 2: return combine_word(bytes
);
2000 case 3: return combine_triple(bytes
);
2001 case 4: return combine_quad(bytes
);
2007 * parse descriptor buffer and return the pointer starting the given
2010 void *snd_usb_find_desc(void *descstart
, int desclen
, void *after
, u8 dtype
)
2022 if (p
[1] == dtype
&& (!after
|| (void *)p
> after
)) {
2031 * find a class-specified interface descriptor with the given subtype.
2033 void *snd_usb_find_csint_desc(void *buffer
, int buflen
, void *after
, u8 dsubtype
)
2035 unsigned char *p
= after
;
2037 while ((p
= snd_usb_find_desc(buffer
, buflen
, p
,
2038 USB_DT_CS_INTERFACE
)) != NULL
) {
2039 if (p
[0] >= 3 && p
[2] == dsubtype
)
2046 * Wrapper for usb_control_msg().
2047 * Allocates a temp buffer to prevent dmaing from/to the stack.
2049 int snd_usb_ctl_msg(struct usb_device
*dev
, unsigned int pipe
, __u8 request
,
2050 __u8 requesttype
, __u16 value
, __u16 index
, void *data
,
2051 __u16 size
, int timeout
)
2057 buf
= kmemdup(data
, size
, GFP_KERNEL
);
2061 err
= usb_control_msg(dev
, pipe
, request
, requesttype
,
2062 value
, index
, buf
, size
, timeout
);
2064 memcpy(data
, buf
, size
);
2072 * entry point for linux usb interface
2075 static int usb_audio_probe(struct usb_interface
*intf
,
2076 const struct usb_device_id
*id
);
2077 static void usb_audio_disconnect(struct usb_interface
*intf
);
2079 static struct usb_device_id usb_audio_ids
[] = {
2080 #include "usbquirks.h"
2081 { .match_flags
= (USB_DEVICE_ID_MATCH_INT_CLASS
| USB_DEVICE_ID_MATCH_INT_SUBCLASS
),
2082 .bInterfaceClass
= USB_CLASS_AUDIO
,
2083 .bInterfaceSubClass
= USB_SUBCLASS_AUDIO_CONTROL
},
2084 { } /* Terminating entry */
2087 MODULE_DEVICE_TABLE (usb
, usb_audio_ids
);
2089 static struct usb_driver usb_audio_driver
= {
2090 .name
= "snd-usb-audio",
2091 .probe
= usb_audio_probe
,
2092 .disconnect
= usb_audio_disconnect
,
2093 .id_table
= usb_audio_ids
,
2097 #if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS)
2100 * proc interface for list the supported pcm formats
2102 static void proc_dump_substream_formats(struct snd_usb_substream
*subs
, struct snd_info_buffer
*buffer
)
2104 struct list_head
*p
;
2105 static char *sync_types
[4] = {
2106 "NONE", "ASYNC", "ADAPTIVE", "SYNC"
2109 list_for_each(p
, &subs
->fmt_list
) {
2110 struct audioformat
*fp
;
2111 fp
= list_entry(p
, struct audioformat
, list
);
2112 snd_iprintf(buffer
, " Interface %d\n", fp
->iface
);
2113 snd_iprintf(buffer
, " Altset %d\n", fp
->altsetting
);
2114 snd_iprintf(buffer
, " Format: 0x%x\n", fp
->format
);
2115 snd_iprintf(buffer
, " Channels: %d\n", fp
->channels
);
2116 snd_iprintf(buffer
, " Endpoint: %d %s (%s)\n",
2117 fp
->endpoint
& USB_ENDPOINT_NUMBER_MASK
,
2118 fp
->endpoint
& USB_DIR_IN
? "IN" : "OUT",
2119 sync_types
[(fp
->ep_attr
& EP_ATTR_MASK
) >> 2]);
2120 if (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
2121 snd_iprintf(buffer
, " Rates: %d - %d (continuous)\n",
2122 fp
->rate_min
, fp
->rate_max
);
2125 snd_iprintf(buffer
, " Rates: ");
2126 for (i
= 0; i
< fp
->nr_rates
; i
++) {
2128 snd_iprintf(buffer
, ", ");
2129 snd_iprintf(buffer
, "%d", fp
->rate_table
[i
]);
2131 snd_iprintf(buffer
, "\n");
2133 // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
2134 // snd_iprintf(buffer, " EP Attribute = 0x%x\n", fp->attributes);
2138 static void proc_dump_substream_status(struct snd_usb_substream
*subs
, struct snd_info_buffer
*buffer
)
2140 if (subs
->running
) {
2142 snd_iprintf(buffer
, " Status: Running\n");
2143 snd_iprintf(buffer
, " Interface = %d\n", subs
->interface
);
2144 snd_iprintf(buffer
, " Altset = %d\n", subs
->format
);
2145 snd_iprintf(buffer
, " URBs = %d [ ", subs
->nurbs
);
2146 for (i
= 0; i
< subs
->nurbs
; i
++)
2147 snd_iprintf(buffer
, "%d ", subs
->dataurb
[i
].packets
);
2148 snd_iprintf(buffer
, "]\n");
2149 snd_iprintf(buffer
, " Packet Size = %d\n", subs
->curpacksize
);
2150 snd_iprintf(buffer
, " Momentary freq = %u Hz (%#x.%04x)\n",
2151 snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
2152 ? get_full_speed_hz(subs
->freqm
)
2153 : get_high_speed_hz(subs
->freqm
),
2154 subs
->freqm
>> 16, subs
->freqm
& 0xffff);
2156 snd_iprintf(buffer
, " Status: Stop\n");
2160 static void proc_pcm_format_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
2162 struct snd_usb_stream
*stream
= entry
->private_data
;
2164 snd_iprintf(buffer
, "%s : %s\n", stream
->chip
->card
->longname
, stream
->pcm
->name
);
2166 if (stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
].num_formats
) {
2167 snd_iprintf(buffer
, "\nPlayback:\n");
2168 proc_dump_substream_status(&stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
], buffer
);
2169 proc_dump_substream_formats(&stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
], buffer
);
2171 if (stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
].num_formats
) {
2172 snd_iprintf(buffer
, "\nCapture:\n");
2173 proc_dump_substream_status(&stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
], buffer
);
2174 proc_dump_substream_formats(&stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
], buffer
);
2178 static void proc_pcm_format_add(struct snd_usb_stream
*stream
)
2180 struct snd_info_entry
*entry
;
2182 struct snd_card
*card
= stream
->chip
->card
;
2184 sprintf(name
, "stream%d", stream
->pcm_index
);
2185 if (! snd_card_proc_new(card
, name
, &entry
))
2186 snd_info_set_text_ops(entry
, stream
, proc_pcm_format_read
);
2191 static inline void proc_pcm_format_add(struct snd_usb_stream
*stream
)
2198 * initialize the substream instance.
2201 static void init_substream(struct snd_usb_stream
*as
, int stream
, struct audioformat
*fp
)
2203 struct snd_usb_substream
*subs
= &as
->substream
[stream
];
2205 INIT_LIST_HEAD(&subs
->fmt_list
);
2206 spin_lock_init(&subs
->lock
);
2209 subs
->direction
= stream
;
2210 subs
->dev
= as
->chip
->dev
;
2211 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
2212 subs
->ops
= audio_urb_ops
[stream
];
2214 subs
->ops
= audio_urb_ops_high_speed
[stream
];
2215 snd_pcm_set_ops(as
->pcm
, stream
,
2216 stream
== SNDRV_PCM_STREAM_PLAYBACK
?
2217 &snd_usb_playback_ops
: &snd_usb_capture_ops
);
2219 list_add_tail(&fp
->list
, &subs
->fmt_list
);
2220 subs
->formats
|= 1ULL << fp
->format
;
2221 subs
->endpoint
= fp
->endpoint
;
2222 subs
->num_formats
++;
2223 subs
->fmt_type
= fp
->fmt_type
;
2230 static void free_substream(struct snd_usb_substream
*subs
)
2232 struct list_head
*p
, *n
;
2234 if (! subs
->num_formats
)
2235 return; /* not initialized */
2236 list_for_each_safe(p
, n
, &subs
->fmt_list
) {
2237 struct audioformat
*fp
= list_entry(p
, struct audioformat
, list
);
2238 kfree(fp
->rate_table
);
2245 * free a usb stream instance
2247 static void snd_usb_audio_stream_free(struct snd_usb_stream
*stream
)
2249 free_substream(&stream
->substream
[0]);
2250 free_substream(&stream
->substream
[1]);
2251 list_del(&stream
->list
);
2255 static void snd_usb_audio_pcm_free(struct snd_pcm
*pcm
)
2257 struct snd_usb_stream
*stream
= pcm
->private_data
;
2260 snd_usb_audio_stream_free(stream
);
2266 * add this endpoint to the chip instance.
2267 * if a stream with the same endpoint already exists, append to it.
2268 * if not, create a new pcm stream.
2270 static int add_audio_endpoint(struct snd_usb_audio
*chip
, int stream
, struct audioformat
*fp
)
2272 struct list_head
*p
;
2273 struct snd_usb_stream
*as
;
2274 struct snd_usb_substream
*subs
;
2275 struct snd_pcm
*pcm
;
2278 list_for_each(p
, &chip
->pcm_list
) {
2279 as
= list_entry(p
, struct snd_usb_stream
, list
);
2280 if (as
->fmt_type
!= fp
->fmt_type
)
2282 subs
= &as
->substream
[stream
];
2283 if (! subs
->endpoint
)
2285 if (subs
->endpoint
== fp
->endpoint
) {
2286 list_add_tail(&fp
->list
, &subs
->fmt_list
);
2287 subs
->num_formats
++;
2288 subs
->formats
|= 1ULL << fp
->format
;
2292 /* look for an empty stream */
2293 list_for_each(p
, &chip
->pcm_list
) {
2294 as
= list_entry(p
, struct snd_usb_stream
, list
);
2295 if (as
->fmt_type
!= fp
->fmt_type
)
2297 subs
= &as
->substream
[stream
];
2300 err
= snd_pcm_new_stream(as
->pcm
, stream
, 1);
2303 init_substream(as
, stream
, fp
);
2307 /* create a new pcm */
2308 as
= kzalloc(sizeof(*as
), GFP_KERNEL
);
2311 as
->pcm_index
= chip
->pcm_devs
;
2313 as
->fmt_type
= fp
->fmt_type
;
2314 err
= snd_pcm_new(chip
->card
, "USB Audio", chip
->pcm_devs
,
2315 stream
== SNDRV_PCM_STREAM_PLAYBACK
? 1 : 0,
2316 stream
== SNDRV_PCM_STREAM_PLAYBACK
? 0 : 1,
2323 pcm
->private_data
= as
;
2324 pcm
->private_free
= snd_usb_audio_pcm_free
;
2325 pcm
->info_flags
= 0;
2326 if (chip
->pcm_devs
> 0)
2327 sprintf(pcm
->name
, "USB Audio #%d", chip
->pcm_devs
);
2329 strcpy(pcm
->name
, "USB Audio");
2331 init_substream(as
, stream
, fp
);
2333 list_add(&as
->list
, &chip
->pcm_list
);
2336 proc_pcm_format_add(as
);
2343 * check if the device uses big-endian samples
2345 static int is_big_endian_format(struct snd_usb_audio
*chip
, struct audioformat
*fp
)
2347 switch (chip
->usb_id
) {
2348 case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
2349 if (fp
->endpoint
& USB_DIR_IN
)
2352 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2359 * parse the audio format type I descriptor
2360 * and returns the corresponding pcm format
2363 * @fp: audioformat record
2364 * @format: the format tag (wFormatTag)
2365 * @fmt: the format type descriptor
2367 static int parse_audio_format_i_type(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2368 int format
, unsigned char *fmt
)
2371 int sample_width
, sample_bytes
;
2373 /* FIXME: correct endianess and sign? */
2375 sample_width
= fmt
[6];
2376 sample_bytes
= fmt
[5];
2378 case 0: /* some devices don't define this correctly... */
2379 snd_printdd(KERN_INFO
"%d:%u:%d : format type 0 is detected, processed as PCM\n",
2380 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
);
2382 case USB_AUDIO_FORMAT_PCM
:
2383 if (sample_width
> sample_bytes
* 8) {
2384 snd_printk(KERN_INFO
"%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
2385 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
,
2386 sample_width
, sample_bytes
);
2388 /* check the format byte size */
2391 pcm_format
= SNDRV_PCM_FORMAT_S8
;
2394 if (is_big_endian_format(chip
, fp
))
2395 pcm_format
= SNDRV_PCM_FORMAT_S16_BE
; /* grrr, big endian!! */
2397 pcm_format
= SNDRV_PCM_FORMAT_S16_LE
;
2400 if (is_big_endian_format(chip
, fp
))
2401 pcm_format
= SNDRV_PCM_FORMAT_S24_3BE
; /* grrr, big endian!! */
2403 pcm_format
= SNDRV_PCM_FORMAT_S24_3LE
;
2406 pcm_format
= SNDRV_PCM_FORMAT_S32_LE
;
2409 snd_printk(KERN_INFO
"%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
2410 chip
->dev
->devnum
, fp
->iface
,
2411 fp
->altsetting
, sample_width
, sample_bytes
);
2415 case USB_AUDIO_FORMAT_PCM8
:
2416 /* Dallas DS4201 workaround */
2417 if (chip
->usb_id
== USB_ID(0x04fa, 0x4201))
2418 pcm_format
= SNDRV_PCM_FORMAT_S8
;
2420 pcm_format
= SNDRV_PCM_FORMAT_U8
;
2422 case USB_AUDIO_FORMAT_IEEE_FLOAT
:
2423 pcm_format
= SNDRV_PCM_FORMAT_FLOAT_LE
;
2425 case USB_AUDIO_FORMAT_ALAW
:
2426 pcm_format
= SNDRV_PCM_FORMAT_A_LAW
;
2428 case USB_AUDIO_FORMAT_MU_LAW
:
2429 pcm_format
= SNDRV_PCM_FORMAT_MU_LAW
;
2432 snd_printk(KERN_INFO
"%d:%u:%d : unsupported format type %d\n",
2433 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, format
);
2441 * parse the format descriptor and stores the possible sample rates
2442 * on the audioformat table.
2445 * @fp: audioformat record
2446 * @fmt: the format descriptor
2447 * @offset: the start offset of descriptor pointing the rate type
2448 * (7 for type I and II, 8 for type II)
2450 static int parse_audio_format_rates(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2451 unsigned char *fmt
, int offset
)
2453 int nr_rates
= fmt
[offset
];
2455 if (fmt
[0] < offset
+ 1 + 3 * (nr_rates
? nr_rates
: 2)) {
2456 snd_printk(KERN_ERR
"%d:%u:%d : invalid FORMAT_TYPE desc\n",
2457 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
);
2463 * build the rate table and bitmap flags
2466 unsigned int nonzero_rates
= 0;
2467 /* this table corresponds to the SNDRV_PCM_RATE_XXX bit */
2468 static unsigned int conv_rates
[] = {
2469 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000,
2470 64000, 88200, 96000, 176400, 192000
2472 fp
->rate_table
= kmalloc(sizeof(int) * nr_rates
, GFP_KERNEL
);
2473 if (fp
->rate_table
== NULL
) {
2474 snd_printk(KERN_ERR
"cannot malloc\n");
2479 fp
->nr_rates
= nr_rates
;
2480 fp
->rate_min
= fp
->rate_max
= combine_triple(&fmt
[8]);
2481 for (r
= 0, idx
= offset
+ 1; r
< nr_rates
; r
++, idx
+= 3) {
2482 unsigned int rate
= combine_triple(&fmt
[idx
]);
2483 /* C-Media CM6501 mislabels its 96 kHz altsetting */
2484 if (rate
== 48000 && nr_rates
== 1 &&
2485 chip
->usb_id
== USB_ID(0x0d8c, 0x0201) &&
2486 fp
->altsetting
== 5 && fp
->maxpacksize
== 392)
2488 fp
->rate_table
[r
] = rate
;
2489 nonzero_rates
|= rate
;
2490 if (rate
< fp
->rate_min
)
2491 fp
->rate_min
= rate
;
2492 else if (rate
> fp
->rate_max
)
2493 fp
->rate_max
= rate
;
2495 for (c
= 0; c
< (int)ARRAY_SIZE(conv_rates
); c
++) {
2496 if (rate
== conv_rates
[c
]) {
2498 fp
->rates
|= (1 << c
);
2505 if (!nonzero_rates
) {
2506 hwc_debug("All rates were zero. Skipping format!\n");
2510 fp
->rates
|= SNDRV_PCM_RATE_KNOT
;
2512 /* continuous rates */
2513 fp
->rates
= SNDRV_PCM_RATE_CONTINUOUS
;
2514 fp
->rate_min
= combine_triple(&fmt
[offset
+ 1]);
2515 fp
->rate_max
= combine_triple(&fmt
[offset
+ 4]);
2521 * parse the format type I and III descriptors
2523 static int parse_audio_format_i(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2524 int format
, unsigned char *fmt
)
2528 if (fmt
[3] == USB_FORMAT_TYPE_III
) {
2529 /* FIXME: the format type is really IECxxx
2530 * but we give normal PCM format to get the existing
2533 pcm_format
= SNDRV_PCM_FORMAT_S16_LE
;
2535 pcm_format
= parse_audio_format_i_type(chip
, fp
, format
, fmt
);
2539 fp
->format
= pcm_format
;
2540 fp
->channels
= fmt
[4];
2541 if (fp
->channels
< 1) {
2542 snd_printk(KERN_ERR
"%d:%u:%d : invalid channels %d\n",
2543 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, fp
->channels
);
2546 return parse_audio_format_rates(chip
, fp
, fmt
, 7);
2550 * prase the format type II descriptor
2552 static int parse_audio_format_ii(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2553 int format
, unsigned char *fmt
)
2555 int brate
, framesize
;
2557 case USB_AUDIO_FORMAT_AC3
:
2558 /* FIXME: there is no AC3 format defined yet */
2559 // fp->format = SNDRV_PCM_FORMAT_AC3;
2560 fp
->format
= SNDRV_PCM_FORMAT_U8
; /* temporarily hack to receive byte streams */
2562 case USB_AUDIO_FORMAT_MPEG
:
2563 fp
->format
= SNDRV_PCM_FORMAT_MPEG
;
2566 snd_printd(KERN_INFO
"%d:%u:%d : unknown format tag 0x%x is detected. processed as MPEG.\n",
2567 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, format
);
2568 fp
->format
= SNDRV_PCM_FORMAT_MPEG
;
2572 brate
= combine_word(&fmt
[4]); /* fmt[4,5] : wMaxBitRate (in kbps) */
2573 framesize
= combine_word(&fmt
[6]); /* fmt[6,7]: wSamplesPerFrame */
2574 snd_printd(KERN_INFO
"found format II with max.bitrate = %d, frame size=%d\n", brate
, framesize
);
2575 fp
->frame_size
= framesize
;
2576 return parse_audio_format_rates(chip
, fp
, fmt
, 8); /* fmt[8..] sample rates */
2579 static int parse_audio_format(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2580 int format
, unsigned char *fmt
, int stream
)
2585 case USB_FORMAT_TYPE_I
:
2586 case USB_FORMAT_TYPE_III
:
2587 err
= parse_audio_format_i(chip
, fp
, format
, fmt
);
2589 case USB_FORMAT_TYPE_II
:
2590 err
= parse_audio_format_ii(chip
, fp
, format
, fmt
);
2593 snd_printd(KERN_INFO
"%d:%u:%d : format type %d is not supported yet\n",
2594 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, fmt
[3]);
2597 fp
->fmt_type
= fmt
[3];
2601 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
2602 /* extigy apparently supports sample rates other than 48k
2603 * but not in ordinary way. so we enable only 48k atm.
2605 if (chip
->usb_id
== USB_ID(0x041e, 0x3000) ||
2606 chip
->usb_id
== USB_ID(0x041e, 0x3020) ||
2607 chip
->usb_id
== USB_ID(0x041e, 0x3061)) {
2608 if (fmt
[3] == USB_FORMAT_TYPE_I
&&
2609 fp
->rates
!= SNDRV_PCM_RATE_48000
&&
2610 fp
->rates
!= SNDRV_PCM_RATE_96000
)
2617 static int audiophile_skip_setting_quirk(struct snd_usb_audio
*chip
,
2618 int iface
, int altno
);
2619 static int parse_audio_endpoints(struct snd_usb_audio
*chip
, int iface_no
)
2621 struct usb_device
*dev
;
2622 struct usb_interface
*iface
;
2623 struct usb_host_interface
*alts
;
2624 struct usb_interface_descriptor
*altsd
;
2625 int i
, altno
, err
, stream
;
2627 struct audioformat
*fp
;
2628 unsigned char *fmt
, *csep
;
2632 /* parse the interface's altsettings */
2633 iface
= usb_ifnum_to_if(dev
, iface_no
);
2634 for (i
= 0; i
< iface
->num_altsetting
; i
++) {
2635 alts
= &iface
->altsetting
[i
];
2636 altsd
= get_iface_desc(alts
);
2637 /* skip invalid one */
2638 if ((altsd
->bInterfaceClass
!= USB_CLASS_AUDIO
&&
2639 altsd
->bInterfaceClass
!= USB_CLASS_VENDOR_SPEC
) ||
2640 (altsd
->bInterfaceSubClass
!= USB_SUBCLASS_AUDIO_STREAMING
&&
2641 altsd
->bInterfaceSubClass
!= USB_SUBCLASS_VENDOR_SPEC
) ||
2642 altsd
->bNumEndpoints
< 1 ||
2643 le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
) == 0)
2645 /* must be isochronous */
2646 if ((get_endpoint(alts
, 0)->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) !=
2647 USB_ENDPOINT_XFER_ISOC
)
2649 /* check direction */
2650 stream
= (get_endpoint(alts
, 0)->bEndpointAddress
& USB_DIR_IN
) ?
2651 SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
2652 altno
= altsd
->bAlternateSetting
;
2654 /* audiophile usb: skip altsets incompatible with device_setup
2656 if (chip
->usb_id
== USB_ID(0x0763, 0x2003) &&
2657 audiophile_skip_setting_quirk(chip
, iface_no
, altno
))
2660 /* get audio formats */
2661 fmt
= snd_usb_find_csint_desc(alts
->extra
, alts
->extralen
, NULL
, AS_GENERAL
);
2663 snd_printk(KERN_ERR
"%d:%u:%d : AS_GENERAL descriptor not found\n",
2664 dev
->devnum
, iface_no
, altno
);
2669 snd_printk(KERN_ERR
"%d:%u:%d : invalid AS_GENERAL desc\n",
2670 dev
->devnum
, iface_no
, altno
);
2674 format
= (fmt
[6] << 8) | fmt
[5]; /* remember the format value */
2676 /* get format type */
2677 fmt
= snd_usb_find_csint_desc(alts
->extra
, alts
->extralen
, NULL
, FORMAT_TYPE
);
2679 snd_printk(KERN_ERR
"%d:%u:%d : no FORMAT_TYPE desc\n",
2680 dev
->devnum
, iface_no
, altno
);
2684 snd_printk(KERN_ERR
"%d:%u:%d : invalid FORMAT_TYPE desc\n",
2685 dev
->devnum
, iface_no
, altno
);
2689 csep
= snd_usb_find_desc(alts
->endpoint
[0].extra
, alts
->endpoint
[0].extralen
, NULL
, USB_DT_CS_ENDPOINT
);
2690 /* Creamware Noah has this descriptor after the 2nd endpoint */
2691 if (!csep
&& altsd
->bNumEndpoints
>= 2)
2692 csep
= snd_usb_find_desc(alts
->endpoint
[1].extra
, alts
->endpoint
[1].extralen
, NULL
, USB_DT_CS_ENDPOINT
);
2693 if (!csep
|| csep
[0] < 7 || csep
[2] != EP_GENERAL
) {
2694 snd_printk(KERN_WARNING
"%d:%u:%d : no or invalid"
2695 " class specific endpoint descriptor\n",
2696 dev
->devnum
, iface_no
, altno
);
2700 fp
= kzalloc(sizeof(*fp
), GFP_KERNEL
);
2702 snd_printk(KERN_ERR
"cannot malloc\n");
2706 fp
->iface
= iface_no
;
2707 fp
->altsetting
= altno
;
2709 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
2710 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
2711 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
2712 if (snd_usb_get_speed(dev
) == USB_SPEED_HIGH
)
2713 fp
->maxpacksize
= (((fp
->maxpacksize
>> 11) & 3) + 1)
2714 * (fp
->maxpacksize
& 0x7ff);
2715 fp
->attributes
= csep
? csep
[3] : 0;
2717 /* some quirks for attributes here */
2719 switch (chip
->usb_id
) {
2720 case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
2721 /* Optoplay sets the sample rate attribute although
2722 * it seems not supporting it in fact.
2724 fp
->attributes
&= ~EP_CS_ATTR_SAMPLE_RATE
;
2726 case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
2727 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2728 /* doesn't set the sample rate attribute, but supports it */
2729 fp
->attributes
|= EP_CS_ATTR_SAMPLE_RATE
;
2731 case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
2732 case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
2733 an older model 77d:223) */
2735 * plantronics headset and Griffin iMic have set adaptive-in
2736 * although it's really not...
2738 fp
->ep_attr
&= ~EP_ATTR_MASK
;
2739 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
2740 fp
->ep_attr
|= EP_ATTR_ADAPTIVE
;
2742 fp
->ep_attr
|= EP_ATTR_SYNC
;
2746 /* ok, let's parse further... */
2747 if (parse_audio_format(chip
, fp
, format
, fmt
, stream
) < 0) {
2748 kfree(fp
->rate_table
);
2753 snd_printdd(KERN_INFO
"%d:%u:%d: add audio endpoint 0x%x\n", dev
->devnum
, iface_no
, altno
, fp
->endpoint
);
2754 err
= add_audio_endpoint(chip
, stream
, fp
);
2756 kfree(fp
->rate_table
);
2760 /* try to set the interface... */
2761 usb_set_interface(chip
->dev
, iface_no
, altno
);
2762 init_usb_pitch(chip
->dev
, iface_no
, alts
, fp
);
2763 init_usb_sample_rate(chip
->dev
, iface_no
, alts
, fp
, fp
->rate_max
);
2770 * disconnect streams
2771 * called from snd_usb_audio_disconnect()
2773 static void snd_usb_stream_disconnect(struct list_head
*head
)
2776 struct snd_usb_stream
*as
;
2777 struct snd_usb_substream
*subs
;
2779 as
= list_entry(head
, struct snd_usb_stream
, list
);
2780 for (idx
= 0; idx
< 2; idx
++) {
2781 subs
= &as
->substream
[idx
];
2782 if (!subs
->num_formats
)
2784 release_substream_urbs(subs
, 1);
2785 subs
->interface
= -1;
2790 * parse audio control descriptor and create pcm/midi streams
2792 static int snd_usb_create_streams(struct snd_usb_audio
*chip
, int ctrlif
)
2794 struct usb_device
*dev
= chip
->dev
;
2795 struct usb_host_interface
*host_iface
;
2796 struct usb_interface
*iface
;
2800 /* find audiocontrol interface */
2801 host_iface
= &usb_ifnum_to_if(dev
, ctrlif
)->altsetting
[0];
2802 if (!(p1
= snd_usb_find_csint_desc(host_iface
->extra
, host_iface
->extralen
, NULL
, HEADER
))) {
2803 snd_printk(KERN_ERR
"cannot find HEADER\n");
2806 if (! p1
[7] || p1
[0] < 8 + p1
[7]) {
2807 snd_printk(KERN_ERR
"invalid HEADER\n");
2812 * parse all USB audio streaming interfaces
2814 for (i
= 0; i
< p1
[7]; i
++) {
2815 struct usb_host_interface
*alts
;
2816 struct usb_interface_descriptor
*altsd
;
2818 iface
= usb_ifnum_to_if(dev
, j
);
2820 snd_printk(KERN_ERR
"%d:%u:%d : does not exist\n",
2821 dev
->devnum
, ctrlif
, j
);
2824 if (usb_interface_claimed(iface
)) {
2825 snd_printdd(KERN_INFO
"%d:%d:%d: skipping, already claimed\n", dev
->devnum
, ctrlif
, j
);
2828 alts
= &iface
->altsetting
[0];
2829 altsd
= get_iface_desc(alts
);
2830 if ((altsd
->bInterfaceClass
== USB_CLASS_AUDIO
||
2831 altsd
->bInterfaceClass
== USB_CLASS_VENDOR_SPEC
) &&
2832 altsd
->bInterfaceSubClass
== USB_SUBCLASS_MIDI_STREAMING
) {
2833 if (snd_usb_create_midi_interface(chip
, iface
, NULL
) < 0) {
2834 snd_printk(KERN_ERR
"%d:%u:%d: cannot create sequencer device\n", dev
->devnum
, ctrlif
, j
);
2837 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
2840 if ((altsd
->bInterfaceClass
!= USB_CLASS_AUDIO
&&
2841 altsd
->bInterfaceClass
!= USB_CLASS_VENDOR_SPEC
) ||
2842 altsd
->bInterfaceSubClass
!= USB_SUBCLASS_AUDIO_STREAMING
) {
2843 snd_printdd(KERN_ERR
"%d:%u:%d: skipping non-supported interface %d\n", dev
->devnum
, ctrlif
, j
, altsd
->bInterfaceClass
);
2844 /* skip non-supported classes */
2847 if (! parse_audio_endpoints(chip
, j
)) {
2848 usb_set_interface(dev
, j
, 0); /* reset the current interface */
2849 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
2857 * create a stream for an endpoint/altsetting without proper descriptors
2859 static int create_fixed_stream_quirk(struct snd_usb_audio
*chip
,
2860 struct usb_interface
*iface
,
2861 const struct snd_usb_audio_quirk
*quirk
)
2863 struct audioformat
*fp
;
2864 struct usb_host_interface
*alts
;
2866 int *rate_table
= NULL
;
2868 fp
= kmemdup(quirk
->data
, sizeof(*fp
), GFP_KERNEL
);
2870 snd_printk(KERN_ERR
"cannot memdup\n");
2873 if (fp
->nr_rates
> 0) {
2874 rate_table
= kmalloc(sizeof(int) * fp
->nr_rates
, GFP_KERNEL
);
2879 memcpy(rate_table
, fp
->rate_table
, sizeof(int) * fp
->nr_rates
);
2880 fp
->rate_table
= rate_table
;
2883 stream
= (fp
->endpoint
& USB_DIR_IN
)
2884 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
2885 err
= add_audio_endpoint(chip
, stream
, fp
);
2891 if (fp
->iface
!= get_iface_desc(&iface
->altsetting
[0])->bInterfaceNumber
||
2892 fp
->altset_idx
>= iface
->num_altsetting
) {
2897 alts
= &iface
->altsetting
[fp
->altset_idx
];
2898 usb_set_interface(chip
->dev
, fp
->iface
, 0);
2899 init_usb_pitch(chip
->dev
, fp
->iface
, alts
, fp
);
2900 init_usb_sample_rate(chip
->dev
, fp
->iface
, alts
, fp
, fp
->rate_max
);
2905 * create a stream for an interface with proper descriptors
2907 static int create_standard_audio_quirk(struct snd_usb_audio
*chip
,
2908 struct usb_interface
*iface
,
2909 const struct snd_usb_audio_quirk
*quirk
)
2911 struct usb_host_interface
*alts
;
2912 struct usb_interface_descriptor
*altsd
;
2915 alts
= &iface
->altsetting
[0];
2916 altsd
= get_iface_desc(alts
);
2917 err
= parse_audio_endpoints(chip
, altsd
->bInterfaceNumber
);
2919 snd_printk(KERN_ERR
"cannot setup if %d: error %d\n",
2920 altsd
->bInterfaceNumber
, err
);
2923 /* reset the current interface */
2924 usb_set_interface(chip
->dev
, altsd
->bInterfaceNumber
, 0);
2929 * Create a stream for an Edirol UA-700/UA-25 interface. The only way
2930 * to detect the sample rate is by looking at wMaxPacketSize.
2932 static int create_ua700_ua25_quirk(struct snd_usb_audio
*chip
,
2933 struct usb_interface
*iface
,
2934 const struct snd_usb_audio_quirk
*quirk
)
2936 static const struct audioformat ua_format
= {
2937 .format
= SNDRV_PCM_FORMAT_S24_3LE
,
2939 .fmt_type
= USB_FORMAT_TYPE_I
,
2942 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
2944 struct usb_host_interface
*alts
;
2945 struct usb_interface_descriptor
*altsd
;
2946 struct audioformat
*fp
;
2949 /* both PCM and MIDI interfaces have 2 altsettings */
2950 if (iface
->num_altsetting
!= 2)
2952 alts
= &iface
->altsetting
[1];
2953 altsd
= get_iface_desc(alts
);
2955 if (altsd
->bNumEndpoints
== 2) {
2956 static const struct snd_usb_midi_endpoint_info ua700_ep
= {
2957 .out_cables
= 0x0003,
2960 static const struct snd_usb_audio_quirk ua700_quirk
= {
2961 .type
= QUIRK_MIDI_FIXED_ENDPOINT
,
2964 static const struct snd_usb_midi_endpoint_info ua25_ep
= {
2965 .out_cables
= 0x0001,
2968 static const struct snd_usb_audio_quirk ua25_quirk
= {
2969 .type
= QUIRK_MIDI_FIXED_ENDPOINT
,
2972 if (chip
->usb_id
== USB_ID(0x0582, 0x002b))
2973 return snd_usb_create_midi_interface(chip
, iface
,
2976 return snd_usb_create_midi_interface(chip
, iface
,
2980 if (altsd
->bNumEndpoints
!= 1)
2983 fp
= kmalloc(sizeof(*fp
), GFP_KERNEL
);
2986 memcpy(fp
, &ua_format
, sizeof(*fp
));
2988 fp
->iface
= altsd
->bInterfaceNumber
;
2989 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
2990 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
2991 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
2993 switch (fp
->maxpacksize
) {
2995 fp
->rate_max
= fp
->rate_min
= 44100;
2999 fp
->rate_max
= fp
->rate_min
= 48000;
3003 fp
->rate_max
= fp
->rate_min
= 96000;
3006 snd_printk(KERN_ERR
"unknown sample rate\n");
3011 stream
= (fp
->endpoint
& USB_DIR_IN
)
3012 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3013 err
= add_audio_endpoint(chip
, stream
, fp
);
3018 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3023 * Create a stream for an Edirol UA-1000 interface.
3025 static int create_ua1000_quirk(struct snd_usb_audio
*chip
,
3026 struct usb_interface
*iface
,
3027 const struct snd_usb_audio_quirk
*quirk
)
3029 static const struct audioformat ua1000_format
= {
3030 .format
= SNDRV_PCM_FORMAT_S32_LE
,
3031 .fmt_type
= USB_FORMAT_TYPE_I
,
3035 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
3037 struct usb_host_interface
*alts
;
3038 struct usb_interface_descriptor
*altsd
;
3039 struct audioformat
*fp
;
3042 if (iface
->num_altsetting
!= 2)
3044 alts
= &iface
->altsetting
[1];
3045 altsd
= get_iface_desc(alts
);
3046 if (alts
->extralen
!= 11 || alts
->extra
[1] != USB_DT_CS_INTERFACE
||
3047 altsd
->bNumEndpoints
!= 1)
3050 fp
= kmemdup(&ua1000_format
, sizeof(*fp
), GFP_KERNEL
);
3054 fp
->channels
= alts
->extra
[4];
3055 fp
->iface
= altsd
->bInterfaceNumber
;
3056 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
3057 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
3058 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
3059 fp
->rate_max
= fp
->rate_min
= combine_triple(&alts
->extra
[8]);
3061 stream
= (fp
->endpoint
& USB_DIR_IN
)
3062 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3063 err
= add_audio_endpoint(chip
, stream
, fp
);
3068 /* FIXME: playback must be synchronized to capture */
3069 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3073 static int snd_usb_create_quirk(struct snd_usb_audio
*chip
,
3074 struct usb_interface
*iface
,
3075 const struct snd_usb_audio_quirk
*quirk
);
3078 * handle the quirks for the contained interfaces
3080 static int create_composite_quirk(struct snd_usb_audio
*chip
,
3081 struct usb_interface
*iface
,
3082 const struct snd_usb_audio_quirk
*quirk
)
3084 int probed_ifnum
= get_iface_desc(iface
->altsetting
)->bInterfaceNumber
;
3087 for (quirk
= quirk
->data
; quirk
->ifnum
>= 0; ++quirk
) {
3088 iface
= usb_ifnum_to_if(chip
->dev
, quirk
->ifnum
);
3091 if (quirk
->ifnum
!= probed_ifnum
&&
3092 usb_interface_claimed(iface
))
3094 err
= snd_usb_create_quirk(chip
, iface
, quirk
);
3097 if (quirk
->ifnum
!= probed_ifnum
)
3098 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
3103 static int ignore_interface_quirk(struct snd_usb_audio
*chip
,
3104 struct usb_interface
*iface
,
3105 const struct snd_usb_audio_quirk
*quirk
)
3115 #define EXTIGY_FIRMWARE_SIZE_OLD 794
3116 #define EXTIGY_FIRMWARE_SIZE_NEW 483
3118 static int snd_usb_extigy_boot_quirk(struct usb_device
*dev
, struct usb_interface
*intf
)
3120 struct usb_host_config
*config
= dev
->actconfig
;
3123 if (le16_to_cpu(get_cfg_desc(config
)->wTotalLength
) == EXTIGY_FIRMWARE_SIZE_OLD
||
3124 le16_to_cpu(get_cfg_desc(config
)->wTotalLength
) == EXTIGY_FIRMWARE_SIZE_NEW
) {
3125 snd_printdd("sending Extigy boot sequence...\n");
3126 /* Send message to force it to reconnect with full interface. */
3127 err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
,0),
3128 0x10, 0x43, 0x0001, 0x000a, NULL
, 0, 1000);
3129 if (err
< 0) snd_printdd("error sending boot message: %d\n", err
);
3130 err
= usb_get_descriptor(dev
, USB_DT_DEVICE
, 0,
3131 &dev
->descriptor
, sizeof(dev
->descriptor
));
3132 config
= dev
->actconfig
;
3133 if (err
< 0) snd_printdd("error usb_get_descriptor: %d\n", err
);
3134 err
= usb_reset_configuration(dev
);
3135 if (err
< 0) snd_printdd("error usb_reset_configuration: %d\n", err
);
3136 snd_printdd("extigy_boot: new boot length = %d\n",
3137 le16_to_cpu(get_cfg_desc(config
)->wTotalLength
));
3138 return -ENODEV
; /* quit this anyway */
3143 static int snd_usb_audigy2nx_boot_quirk(struct usb_device
*dev
)
3147 snd_usb_ctl_msg(dev
, usb_rcvctrlpipe(dev
, 0), 0x2a,
3148 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
3149 0, 0, &buf
, 1, 1000);
3151 snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), 0x29,
3152 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
3153 1, 2000, NULL
, 0, 1000);
3160 * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
3161 * documented in the device's data sheet.
3163 static int snd_usb_cm106_write_int_reg(struct usb_device
*dev
, int reg
, u16 value
)
3167 buf
[1] = value
& 0xff;
3168 buf
[2] = (value
>> 8) & 0xff;
3170 return snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), USB_REQ_SET_CONFIGURATION
,
3171 USB_DIR_OUT
| USB_TYPE_CLASS
| USB_RECIP_ENDPOINT
,
3172 0, 0, &buf
, 4, 1000);
3175 static int snd_usb_cm106_boot_quirk(struct usb_device
*dev
)
3178 * Enable line-out driver mode, set headphone source to front
3179 * channels, enable stereo mic.
3181 return snd_usb_cm106_write_int_reg(dev
, 2, 0x8004);
3188 #define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
3189 #define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
3190 #define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
3191 #define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
3192 #define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
3193 #define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
3194 #define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
3195 #define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
3196 #define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
3197 #define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
3199 static int audiophile_skip_setting_quirk(struct snd_usb_audio
*chip
,
3200 int iface
, int altno
)
3202 if (device_setup
[chip
->index
] & AUDIOPHILE_SET
) {
3203 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_DTS
)
3205 return 1; /* skip this altsetting */
3206 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_96K
)
3208 return 1; /* skip this altsetting */
3209 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3210 AUDIOPHILE_SET_24B_48K_DI
&& altno
!= 2)
3211 return 1; /* skip this altsetting */
3212 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3213 AUDIOPHILE_SET_24B_48K_NOTDI
&& altno
!= 3)
3214 return 1; /* skip this altsetting */
3215 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3216 AUDIOPHILE_SET_16B_48K_DI
&& altno
!= 4)
3217 return 1; /* skip this altsetting */
3218 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3219 AUDIOPHILE_SET_16B_48K_NOTDI
&& altno
!= 5)
3220 return 1; /* skip this altsetting */
3222 return 0; /* keep this altsetting */
3226 * audio-interface quirks
3228 * returns zero if no standard audio/MIDI parsing is needed.
3229 * returns a postive value if standard audio/midi interfaces are parsed
3231 * returns a negative value at error.
3233 static int snd_usb_create_quirk(struct snd_usb_audio
*chip
,
3234 struct usb_interface
*iface
,
3235 const struct snd_usb_audio_quirk
*quirk
)
3237 typedef int (*quirk_func_t
)(struct snd_usb_audio
*, struct usb_interface
*,
3238 const struct snd_usb_audio_quirk
*);
3239 static const quirk_func_t quirk_funcs
[] = {
3240 [QUIRK_IGNORE_INTERFACE
] = ignore_interface_quirk
,
3241 [QUIRK_COMPOSITE
] = create_composite_quirk
,
3242 [QUIRK_MIDI_STANDARD_INTERFACE
] = snd_usb_create_midi_interface
,
3243 [QUIRK_MIDI_FIXED_ENDPOINT
] = snd_usb_create_midi_interface
,
3244 [QUIRK_MIDI_YAMAHA
] = snd_usb_create_midi_interface
,
3245 [QUIRK_MIDI_MIDIMAN
] = snd_usb_create_midi_interface
,
3246 [QUIRK_MIDI_NOVATION
] = snd_usb_create_midi_interface
,
3247 [QUIRK_MIDI_RAW
] = snd_usb_create_midi_interface
,
3248 [QUIRK_MIDI_EMAGIC
] = snd_usb_create_midi_interface
,
3249 [QUIRK_MIDI_CME
] = snd_usb_create_midi_interface
,
3250 [QUIRK_AUDIO_STANDARD_INTERFACE
] = create_standard_audio_quirk
,
3251 [QUIRK_AUDIO_FIXED_ENDPOINT
] = create_fixed_stream_quirk
,
3252 [QUIRK_AUDIO_EDIROL_UA700_UA25
] = create_ua700_ua25_quirk
,
3253 [QUIRK_AUDIO_EDIROL_UA1000
] = create_ua1000_quirk
,
3256 if (quirk
->type
< QUIRK_TYPE_COUNT
) {
3257 return quirk_funcs
[quirk
->type
](chip
, iface
, quirk
);
3259 snd_printd(KERN_ERR
"invalid quirk type %d\n", quirk
->type
);
3266 * common proc files to show the usb device info
3268 static void proc_audio_usbbus_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
3270 struct snd_usb_audio
*chip
= entry
->private_data
;
3271 if (! chip
->shutdown
)
3272 snd_iprintf(buffer
, "%03d/%03d\n", chip
->dev
->bus
->busnum
, chip
->dev
->devnum
);
3275 static void proc_audio_usbid_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
3277 struct snd_usb_audio
*chip
= entry
->private_data
;
3278 if (! chip
->shutdown
)
3279 snd_iprintf(buffer
, "%04x:%04x\n",
3280 USB_ID_VENDOR(chip
->usb_id
),
3281 USB_ID_PRODUCT(chip
->usb_id
));
3284 static void snd_usb_audio_create_proc(struct snd_usb_audio
*chip
)
3286 struct snd_info_entry
*entry
;
3287 if (! snd_card_proc_new(chip
->card
, "usbbus", &entry
))
3288 snd_info_set_text_ops(entry
, chip
, proc_audio_usbbus_read
);
3289 if (! snd_card_proc_new(chip
->card
, "usbid", &entry
))
3290 snd_info_set_text_ops(entry
, chip
, proc_audio_usbid_read
);
3294 * free the chip instance
3296 * here we have to do not much, since pcm and controls are already freed
3300 static int snd_usb_audio_free(struct snd_usb_audio
*chip
)
3302 usb_chip
[chip
->index
] = NULL
;
3307 static int snd_usb_audio_dev_free(struct snd_device
*device
)
3309 struct snd_usb_audio
*chip
= device
->device_data
;
3310 return snd_usb_audio_free(chip
);
3315 * create a chip instance and set its names.
3317 static int snd_usb_audio_create(struct usb_device
*dev
, int idx
,
3318 const struct snd_usb_audio_quirk
*quirk
,
3319 struct snd_usb_audio
**rchip
)
3321 struct snd_card
*card
;
3322 struct snd_usb_audio
*chip
;
3325 static struct snd_device_ops ops
= {
3326 .dev_free
= snd_usb_audio_dev_free
,
3331 if (snd_usb_get_speed(dev
) != USB_SPEED_FULL
&&
3332 snd_usb_get_speed(dev
) != USB_SPEED_HIGH
) {
3333 snd_printk(KERN_ERR
"unknown device speed %d\n", snd_usb_get_speed(dev
));
3337 card
= snd_card_new(index
[idx
], id
[idx
], THIS_MODULE
, 0);
3339 snd_printk(KERN_ERR
"cannot create card instance %d\n", idx
);
3343 chip
= kzalloc(sizeof(*chip
), GFP_KERNEL
);
3345 snd_card_free(card
);
3352 chip
->usb_id
= USB_ID(le16_to_cpu(dev
->descriptor
.idVendor
),
3353 le16_to_cpu(dev
->descriptor
.idProduct
));
3354 INIT_LIST_HEAD(&chip
->pcm_list
);
3355 INIT_LIST_HEAD(&chip
->midi_list
);
3356 INIT_LIST_HEAD(&chip
->mixer_list
);
3358 if ((err
= snd_device_new(card
, SNDRV_DEV_LOWLEVEL
, chip
, &ops
)) < 0) {
3359 snd_usb_audio_free(chip
);
3360 snd_card_free(card
);
3364 strcpy(card
->driver
, "USB-Audio");
3365 sprintf(component
, "USB%04x:%04x",
3366 USB_ID_VENDOR(chip
->usb_id
), USB_ID_PRODUCT(chip
->usb_id
));
3367 snd_component_add(card
, component
);
3369 /* retrieve the device string as shortname */
3370 if (quirk
&& quirk
->product_name
) {
3371 strlcpy(card
->shortname
, quirk
->product_name
, sizeof(card
->shortname
));
3373 if (!dev
->descriptor
.iProduct
||
3374 usb_string(dev
, dev
->descriptor
.iProduct
,
3375 card
->shortname
, sizeof(card
->shortname
)) <= 0) {
3376 /* no name available from anywhere, so use ID */
3377 sprintf(card
->shortname
, "USB Device %#04x:%#04x",
3378 USB_ID_VENDOR(chip
->usb_id
),
3379 USB_ID_PRODUCT(chip
->usb_id
));
3383 /* retrieve the vendor and device strings as longname */
3384 if (quirk
&& quirk
->vendor_name
) {
3385 len
= strlcpy(card
->longname
, quirk
->vendor_name
, sizeof(card
->longname
));
3387 if (dev
->descriptor
.iManufacturer
)
3388 len
= usb_string(dev
, dev
->descriptor
.iManufacturer
,
3389 card
->longname
, sizeof(card
->longname
));
3392 /* we don't really care if there isn't any vendor string */
3395 strlcat(card
->longname
, " ", sizeof(card
->longname
));
3397 strlcat(card
->longname
, card
->shortname
, sizeof(card
->longname
));
3399 len
= strlcat(card
->longname
, " at ", sizeof(card
->longname
));
3401 if (len
< sizeof(card
->longname
))
3402 usb_make_path(dev
, card
->longname
+ len
, sizeof(card
->longname
) - len
);
3404 strlcat(card
->longname
,
3405 snd_usb_get_speed(dev
) == USB_SPEED_FULL
? ", full speed" : ", high speed",
3406 sizeof(card
->longname
));
3408 snd_usb_audio_create_proc(chip
);
3416 * probe the active usb device
3418 * note that this can be called multiple times per a device, when it
3419 * includes multiple audio control interfaces.
3421 * thus we check the usb device pointer and creates the card instance
3422 * only at the first time. the successive calls of this function will
3423 * append the pcm interface to the corresponding card.
3425 static void *snd_usb_audio_probe(struct usb_device
*dev
,
3426 struct usb_interface
*intf
,
3427 const struct usb_device_id
*usb_id
)
3429 const struct snd_usb_audio_quirk
*quirk
= (const struct snd_usb_audio_quirk
*)usb_id
->driver_info
;
3431 struct snd_usb_audio
*chip
;
3432 struct usb_host_interface
*alts
;
3436 alts
= &intf
->altsetting
[0];
3437 ifnum
= get_iface_desc(alts
)->bInterfaceNumber
;
3438 id
= USB_ID(le16_to_cpu(dev
->descriptor
.idVendor
),
3439 le16_to_cpu(dev
->descriptor
.idProduct
));
3441 if (quirk
&& quirk
->ifnum
>= 0 && ifnum
!= quirk
->ifnum
)
3444 /* SB Extigy needs special boot-up sequence */
3445 /* if more models come, this will go to the quirk list. */
3446 if (id
== USB_ID(0x041e, 0x3000)) {
3447 if (snd_usb_extigy_boot_quirk(dev
, intf
) < 0)
3450 /* SB Audigy 2 NX needs its own boot-up magic, too */
3451 if (id
== USB_ID(0x041e, 0x3020)) {
3452 if (snd_usb_audigy2nx_boot_quirk(dev
) < 0)
3456 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
3457 if (id
== USB_ID(0x10f5, 0x0200)) {
3458 if (snd_usb_cm106_boot_quirk(dev
) < 0)
3463 * found a config. now register to ALSA
3466 /* check whether it's already registered */
3468 mutex_lock(®ister_mutex
);
3469 for (i
= 0; i
< SNDRV_CARDS
; i
++) {
3470 if (usb_chip
[i
] && usb_chip
[i
]->dev
== dev
) {
3471 if (usb_chip
[i
]->shutdown
) {
3472 snd_printk(KERN_ERR
"USB device is in the shutdown state, cannot create a card instance\n");
3480 /* it's a fresh one.
3481 * now look for an empty slot and create a new card instance
3483 for (i
= 0; i
< SNDRV_CARDS
; i
++)
3484 if (enable
[i
] && ! usb_chip
[i
] &&
3485 (vid
[i
] == -1 || vid
[i
] == USB_ID_VENDOR(id
)) &&
3486 (pid
[i
] == -1 || pid
[i
] == USB_ID_PRODUCT(id
))) {
3487 if (snd_usb_audio_create(dev
, i
, quirk
, &chip
) < 0) {
3490 snd_card_set_dev(chip
->card
, &intf
->dev
);
3494 snd_printk(KERN_ERR
"no available usb audio device\n");
3499 err
= 1; /* continue */
3500 if (quirk
&& quirk
->ifnum
!= QUIRK_NO_INTERFACE
) {
3501 /* need some special handlings */
3502 if ((err
= snd_usb_create_quirk(chip
, intf
, quirk
)) < 0)
3507 /* create normal USB audio interfaces */
3508 if (snd_usb_create_streams(chip
, ifnum
) < 0 ||
3509 snd_usb_create_mixer(chip
, ifnum
) < 0) {
3514 /* we are allowed to call snd_card_register() many times */
3515 if (snd_card_register(chip
->card
) < 0) {
3519 usb_chip
[chip
->index
] = chip
;
3520 chip
->num_interfaces
++;
3521 mutex_unlock(®ister_mutex
);
3525 if (chip
&& !chip
->num_interfaces
)
3526 snd_card_free(chip
->card
);
3527 mutex_unlock(®ister_mutex
);
3533 * we need to take care of counter, since disconnection can be called also
3534 * many times as well as usb_audio_probe().
3536 static void snd_usb_audio_disconnect(struct usb_device
*dev
, void *ptr
)
3538 struct snd_usb_audio
*chip
;
3539 struct snd_card
*card
;
3540 struct list_head
*p
;
3542 if (ptr
== (void *)-1L)
3547 mutex_lock(®ister_mutex
);
3549 chip
->num_interfaces
--;
3550 if (chip
->num_interfaces
<= 0) {
3551 snd_card_disconnect(card
);
3552 /* release the pcm resources */
3553 list_for_each(p
, &chip
->pcm_list
) {
3554 snd_usb_stream_disconnect(p
);
3556 /* release the midi resources */
3557 list_for_each(p
, &chip
->midi_list
) {
3558 snd_usbmidi_disconnect(p
);
3560 /* release mixer resources */
3561 list_for_each(p
, &chip
->mixer_list
) {
3562 snd_usb_mixer_disconnect(p
);
3564 mutex_unlock(®ister_mutex
);
3565 snd_card_free_when_closed(card
);
3567 mutex_unlock(®ister_mutex
);
3572 * new 2.5 USB kernel API
3574 static int usb_audio_probe(struct usb_interface
*intf
,
3575 const struct usb_device_id
*id
)
3578 chip
= snd_usb_audio_probe(interface_to_usbdev(intf
), intf
, id
);
3580 dev_set_drvdata(&intf
->dev
, chip
);
3586 static void usb_audio_disconnect(struct usb_interface
*intf
)
3588 snd_usb_audio_disconnect(interface_to_usbdev(intf
),
3589 dev_get_drvdata(&intf
->dev
));
3593 static int __init
snd_usb_audio_init(void)
3595 if (nrpacks
< MIN_PACKS_URB
|| nrpacks
> MAX_PACKS
) {
3596 printk(KERN_WARNING
"invalid nrpacks value.\n");
3599 return usb_register(&usb_audio_driver
);
3603 static void __exit
snd_usb_audio_cleanup(void)
3605 usb_deregister(&usb_audio_driver
);
3608 module_init(snd_usb_audio_init
);
3609 module_exit(snd_usb_audio_cleanup
);