2 * (Tentative) USB Audio Driver for ALSA
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
8 * Many codes borrowed from audio.c by
9 * Alan Cox (alan@lxorguk.ukuu.org.uk)
10 * Thomas Sailer (sailer@ife.ee.ethz.ch)
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 * - async unlink should be used for avoiding the sleep inside lock.
31 * 2.4.22 usb-uhci seems buggy for async unlinking and results in
32 * oops. in such a cse, pass async_unlink=0 option.
33 * - the linked URBs would be preferred but not used so far because of
34 * the instability of unlinking.
35 * - type II is not supported properly. there is no device which supports
36 * this type *correctly*. SB extigy looks as if it supports, but it's
37 * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream).
41 #include <sound/driver.h>
42 #include <linux/bitops.h>
43 #include <linux/init.h>
44 #include <linux/list.h>
45 #include <linux/slab.h>
46 #include <linux/string.h>
47 #include <linux/usb.h>
48 #include <linux/vmalloc.h>
49 #include <linux/moduleparam.h>
50 #include <linux/mutex.h>
51 #include <sound/core.h>
52 #include <sound/info.h>
53 #include <sound/pcm.h>
54 #include <sound/pcm_params.h>
55 #include <sound/initval.h>
60 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
61 MODULE_DESCRIPTION("USB Audio");
62 MODULE_LICENSE("GPL");
63 MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
66 static int index
[SNDRV_CARDS
] = SNDRV_DEFAULT_IDX
; /* Index 0-MAX */
67 static char *id
[SNDRV_CARDS
] = SNDRV_DEFAULT_STR
; /* ID for this card */
68 static int enable
[SNDRV_CARDS
] = SNDRV_DEFAULT_ENABLE_PNP
; /* Enable this card */
69 static int vid
[SNDRV_CARDS
] = { [0 ... (SNDRV_CARDS
-1)] = -1 }; /* Vendor ID for this card */
70 static int pid
[SNDRV_CARDS
] = { [0 ... (SNDRV_CARDS
-1)] = -1 }; /* Product ID for this card */
71 static int nrpacks
= 8; /* max. number of packets per urb */
72 static int async_unlink
= 1;
73 static int device_setup
[SNDRV_CARDS
]; /* device parameter for this card*/
75 module_param_array(index
, int, NULL
, 0444);
76 MODULE_PARM_DESC(index
, "Index value for the USB audio adapter.");
77 module_param_array(id
, charp
, NULL
, 0444);
78 MODULE_PARM_DESC(id
, "ID string for the USB audio adapter.");
79 module_param_array(enable
, bool, NULL
, 0444);
80 MODULE_PARM_DESC(enable
, "Enable USB audio adapter.");
81 module_param_array(vid
, int, NULL
, 0444);
82 MODULE_PARM_DESC(vid
, "Vendor ID for the USB audio device.");
83 module_param_array(pid
, int, NULL
, 0444);
84 MODULE_PARM_DESC(pid
, "Product ID for the USB audio device.");
85 module_param(nrpacks
, int, 0644);
86 MODULE_PARM_DESC(nrpacks
, "Max. number of packets per URB.");
87 module_param(async_unlink
, bool, 0444);
88 MODULE_PARM_DESC(async_unlink
, "Use async unlink mode.");
89 module_param_array(device_setup
, int, NULL
, 0444);
90 MODULE_PARM_DESC(device_setup
, "Specific device setup (if needed).");
94 * debug the h/w constraints
96 /* #define HW_CONST_DEBUG */
104 #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
106 #define SYNC_URBS 4 /* always four urbs for sync */
107 #define MIN_PACKS_URB 1 /* minimum 1 packet per urb */
110 struct list_head list
;
111 snd_pcm_format_t format
; /* format type */
112 unsigned int channels
; /* # channels */
113 unsigned int fmt_type
; /* USB audio format type (1-3) */
114 unsigned int frame_size
; /* samples per frame for non-audio */
115 int iface
; /* interface number */
116 unsigned char altsetting
; /* corresponding alternate setting */
117 unsigned char altset_idx
; /* array index of altenate setting */
118 unsigned char attributes
; /* corresponding attributes of cs endpoint */
119 unsigned char endpoint
; /* endpoint */
120 unsigned char ep_attr
; /* endpoint attributes */
121 unsigned int maxpacksize
; /* max. packet size */
122 unsigned int rates
; /* rate bitmasks */
123 unsigned int rate_min
, rate_max
; /* min/max rates */
124 unsigned int nr_rates
; /* number of rate table entries */
125 unsigned int *rate_table
; /* rate table */
126 unsigned int needs_knot
; /* any unusual rates? */
129 struct snd_usb_substream
;
133 unsigned int buffer_size
; /* size of data buffer, if data URB */
134 struct snd_usb_substream
*subs
;
135 int index
; /* index for urb array */
136 int packets
; /* number of packets per urb */
140 int (*prepare
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
141 int (*retire
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
142 int (*prepare_sync
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
143 int (*retire_sync
)(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
, struct urb
*u
);
146 struct snd_usb_substream
{
147 struct snd_usb_stream
*stream
;
148 struct usb_device
*dev
;
149 struct snd_pcm_substream
*pcm_substream
;
150 int direction
; /* playback or capture */
151 int interface
; /* current interface */
152 int endpoint
; /* assigned endpoint */
153 struct audioformat
*cur_audiofmt
; /* current audioformat pointer (for hw_params callback) */
154 unsigned int cur_rate
; /* current rate (for hw_params callback) */
155 unsigned int period_bytes
; /* current period bytes (for hw_params callback) */
156 unsigned int format
; /* USB data format */
157 unsigned int datapipe
; /* the data i/o pipe */
158 unsigned int syncpipe
; /* 1 - async out or adaptive in */
159 unsigned int datainterval
; /* log_2 of data packet interval */
160 unsigned int syncinterval
; /* P for adaptive mode, 0 otherwise */
161 unsigned int freqn
; /* nominal sampling rate in fs/fps in Q16.16 format */
162 unsigned int freqm
; /* momentary sampling rate in fs/fps in Q16.16 format */
163 unsigned int freqmax
; /* maximum sampling rate, used for buffer management */
164 unsigned int phase
; /* phase accumulator */
165 unsigned int maxpacksize
; /* max packet size in bytes */
166 unsigned int maxframesize
; /* max packet size in frames */
167 unsigned int curpacksize
; /* current packet size in bytes (for capture) */
168 unsigned int curframesize
; /* current packet size in frames (for capture) */
169 unsigned int fill_max
: 1; /* fill max packet size always */
170 unsigned int fmt_type
; /* USB audio format type (1-3) */
171 unsigned int packs_per_ms
; /* packets per millisecond (for playback) */
173 unsigned int running
: 1; /* running status */
175 unsigned int hwptr_done
; /* processed frame position in the buffer */
176 unsigned int transfer_done
; /* processed frames since last period update */
177 unsigned long active_mask
; /* bitmask of active urbs */
178 unsigned long unlink_mask
; /* bitmask of unlinked urbs */
180 unsigned int nurbs
; /* # urbs */
181 struct snd_urb_ctx dataurb
[MAX_URBS
]; /* data urb table */
182 struct snd_urb_ctx syncurb
[SYNC_URBS
]; /* sync urb table */
183 char *syncbuf
; /* sync buffer for all sync URBs */
184 dma_addr_t sync_dma
; /* DMA address of syncbuf */
186 u64 formats
; /* format bitmasks (all or'ed) */
187 unsigned int num_formats
; /* number of supported audio formats (list) */
188 struct list_head fmt_list
; /* format list */
189 struct snd_pcm_hw_constraint_list rate_list
; /* limited rates */
192 struct snd_urb_ops ops
; /* callbacks (must be filled at init) */
196 struct snd_usb_stream
{
197 struct snd_usb_audio
*chip
;
200 unsigned int fmt_type
; /* USB audio format type (1-3) */
201 struct snd_usb_substream substream
[2];
202 struct list_head list
;
207 * we keep the snd_usb_audio_t instances by ourselves for merging
208 * the all interfaces on the same card as one sound device.
211 static DEFINE_MUTEX(register_mutex
);
212 static struct snd_usb_audio
*usb_chip
[SNDRV_CARDS
];
216 * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
217 * this will overflow at approx 524 kHz
219 static inline unsigned get_usb_full_speed_rate(unsigned int rate
)
221 return ((rate
<< 13) + 62) / 125;
225 * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
226 * this will overflow at approx 4 MHz
228 static inline unsigned get_usb_high_speed_rate(unsigned int rate
)
230 return ((rate
<< 10) + 62) / 125;
233 /* convert our full speed USB rate into sampling rate in Hz */
234 static inline unsigned get_full_speed_hz(unsigned int usb_rate
)
236 return (usb_rate
* 125 + (1 << 12)) >> 13;
239 /* convert our high speed USB rate into sampling rate in Hz */
240 static inline unsigned get_high_speed_hz(unsigned int usb_rate
)
242 return (usb_rate
* 125 + (1 << 9)) >> 10;
247 * prepare urb for full speed capture sync pipe
249 * fill the length and offset of each urb descriptor.
250 * the fixed 10.14 frequency is passed through the pipe.
252 static int prepare_capture_sync_urb(struct snd_usb_substream
*subs
,
253 struct snd_pcm_runtime
*runtime
,
256 unsigned char *cp
= urb
->transfer_buffer
;
257 struct snd_urb_ctx
*ctx
= urb
->context
;
259 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
260 urb
->iso_frame_desc
[0].length
= 3;
261 urb
->iso_frame_desc
[0].offset
= 0;
262 cp
[0] = subs
->freqn
>> 2;
263 cp
[1] = subs
->freqn
>> 10;
264 cp
[2] = subs
->freqn
>> 18;
269 * prepare urb for high speed capture sync pipe
271 * fill the length and offset of each urb descriptor.
272 * the fixed 12.13 frequency is passed as 16.16 through the pipe.
274 static int prepare_capture_sync_urb_hs(struct snd_usb_substream
*subs
,
275 struct snd_pcm_runtime
*runtime
,
278 unsigned char *cp
= urb
->transfer_buffer
;
279 struct snd_urb_ctx
*ctx
= urb
->context
;
281 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
282 urb
->iso_frame_desc
[0].length
= 4;
283 urb
->iso_frame_desc
[0].offset
= 0;
285 cp
[1] = subs
->freqn
>> 8;
286 cp
[2] = subs
->freqn
>> 16;
287 cp
[3] = subs
->freqn
>> 24;
292 * process after capture sync complete
295 static int retire_capture_sync_urb(struct snd_usb_substream
*subs
,
296 struct snd_pcm_runtime
*runtime
,
303 * prepare urb for capture data pipe
305 * fill the offset and length of each descriptor.
307 * we use a temporary buffer to write the captured data.
308 * since the length of written data is determined by host, we cannot
309 * write onto the pcm buffer directly... the data is thus copied
310 * later at complete callback to the global buffer.
312 static int prepare_capture_urb(struct snd_usb_substream
*subs
,
313 struct snd_pcm_runtime
*runtime
,
317 struct snd_urb_ctx
*ctx
= urb
->context
;
320 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
321 for (i
= 0; i
< ctx
->packets
; i
++) {
322 urb
->iso_frame_desc
[i
].offset
= offs
;
323 urb
->iso_frame_desc
[i
].length
= subs
->curpacksize
;
324 offs
+= subs
->curpacksize
;
326 urb
->transfer_buffer_length
= offs
;
327 urb
->number_of_packets
= ctx
->packets
;
329 if (! urb
->bandwidth
) {
331 bustime
= usb_check_bandwidth(urb
->dev
, urb
);
334 printk("urb %d: bandwidth = %d (packets = %d)\n", ctx
->index
, bustime
, urb
->number_of_packets
);
335 usb_claim_bandwidth(urb
->dev
, urb
, bustime
, 1);
342 * process after capture complete
344 * copy the data from each desctiptor to the pcm buffer, and
345 * update the current position.
347 static int retire_capture_urb(struct snd_usb_substream
*subs
,
348 struct snd_pcm_runtime
*runtime
,
354 unsigned int stride
, len
, oldptr
;
355 int period_elapsed
= 0;
357 stride
= runtime
->frame_bits
>> 3;
359 for (i
= 0; i
< urb
->number_of_packets
; i
++) {
360 cp
= (unsigned char *)urb
->transfer_buffer
+ urb
->iso_frame_desc
[i
].offset
;
361 if (urb
->iso_frame_desc
[i
].status
) {
362 snd_printd(KERN_ERR
"frame %d active: %d\n", i
, urb
->iso_frame_desc
[i
].status
);
365 len
= urb
->iso_frame_desc
[i
].actual_length
/ stride
;
368 /* update the current pointer */
369 spin_lock_irqsave(&subs
->lock
, flags
);
370 oldptr
= subs
->hwptr_done
;
371 subs
->hwptr_done
+= len
;
372 if (subs
->hwptr_done
>= runtime
->buffer_size
)
373 subs
->hwptr_done
-= runtime
->buffer_size
;
374 subs
->transfer_done
+= len
;
375 if (subs
->transfer_done
>= runtime
->period_size
) {
376 subs
->transfer_done
-= runtime
->period_size
;
379 spin_unlock_irqrestore(&subs
->lock
, flags
);
380 /* copy a data chunk */
381 if (oldptr
+ len
> runtime
->buffer_size
) {
382 unsigned int cnt
= runtime
->buffer_size
- oldptr
;
383 unsigned int blen
= cnt
* stride
;
384 memcpy(runtime
->dma_area
+ oldptr
* stride
, cp
, blen
);
385 memcpy(runtime
->dma_area
, cp
+ blen
, len
* stride
- blen
);
387 memcpy(runtime
->dma_area
+ oldptr
* stride
, cp
, len
* stride
);
391 snd_pcm_period_elapsed(subs
->pcm_substream
);
396 * Process after capture complete when paused. Nothing to do.
398 static int retire_paused_capture_urb(struct snd_usb_substream
*subs
,
399 struct snd_pcm_runtime
*runtime
,
407 * prepare urb for full speed playback sync pipe
409 * set up the offset and length to receive the current frequency.
412 static int prepare_playback_sync_urb(struct snd_usb_substream
*subs
,
413 struct snd_pcm_runtime
*runtime
,
416 struct snd_urb_ctx
*ctx
= urb
->context
;
418 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
419 urb
->iso_frame_desc
[0].length
= 3;
420 urb
->iso_frame_desc
[0].offset
= 0;
425 * prepare urb for high speed playback sync pipe
427 * set up the offset and length to receive the current frequency.
430 static int prepare_playback_sync_urb_hs(struct snd_usb_substream
*subs
,
431 struct snd_pcm_runtime
*runtime
,
434 struct snd_urb_ctx
*ctx
= urb
->context
;
436 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
437 urb
->iso_frame_desc
[0].length
= 4;
438 urb
->iso_frame_desc
[0].offset
= 0;
443 * process after full speed playback sync complete
445 * retrieve the current 10.14 frequency from pipe, and set it.
446 * the value is referred in prepare_playback_urb().
448 static int retire_playback_sync_urb(struct snd_usb_substream
*subs
,
449 struct snd_pcm_runtime
*runtime
,
455 if (urb
->iso_frame_desc
[0].status
== 0 &&
456 urb
->iso_frame_desc
[0].actual_length
== 3) {
457 f
= combine_triple((u8
*)urb
->transfer_buffer
) << 2;
458 if (f
>= subs
->freqn
- subs
->freqn
/ 8 && f
<= subs
->freqmax
) {
459 spin_lock_irqsave(&subs
->lock
, flags
);
461 spin_unlock_irqrestore(&subs
->lock
, flags
);
469 * process after high speed playback sync complete
471 * retrieve the current 12.13 frequency from pipe, and set it.
472 * the value is referred in prepare_playback_urb().
474 static int retire_playback_sync_urb_hs(struct snd_usb_substream
*subs
,
475 struct snd_pcm_runtime
*runtime
,
481 if (urb
->iso_frame_desc
[0].status
== 0 &&
482 urb
->iso_frame_desc
[0].actual_length
== 4) {
483 f
= combine_quad((u8
*)urb
->transfer_buffer
) & 0x0fffffff;
484 if (f
>= subs
->freqn
- subs
->freqn
/ 8 && f
<= subs
->freqmax
) {
485 spin_lock_irqsave(&subs
->lock
, flags
);
487 spin_unlock_irqrestore(&subs
->lock
, flags
);
494 /* determine the number of frames in the next packet */
495 static int snd_usb_audio_next_packet_size(struct snd_usb_substream
*subs
)
498 return subs
->maxframesize
;
500 subs
->phase
= (subs
->phase
& 0xffff)
501 + (subs
->freqm
<< subs
->datainterval
);
502 return min(subs
->phase
>> 16, subs
->maxframesize
);
507 * Prepare urb for streaming before playback starts or when paused.
509 * We don't have any data, so we send a frame of silence.
511 static int prepare_nodata_playback_urb(struct snd_usb_substream
*subs
,
512 struct snd_pcm_runtime
*runtime
,
515 unsigned int i
, offs
, counts
;
516 struct snd_urb_ctx
*ctx
= urb
->context
;
517 int stride
= runtime
->frame_bits
>> 3;
520 urb
->dev
= ctx
->subs
->dev
;
521 urb
->number_of_packets
= subs
->packs_per_ms
;
522 for (i
= 0; i
< subs
->packs_per_ms
; ++i
) {
523 counts
= snd_usb_audio_next_packet_size(subs
);
524 urb
->iso_frame_desc
[i
].offset
= offs
* stride
;
525 urb
->iso_frame_desc
[i
].length
= counts
* stride
;
528 urb
->transfer_buffer_length
= offs
* stride
;
529 memset(urb
->transfer_buffer
,
530 subs
->cur_audiofmt
->format
== SNDRV_PCM_FORMAT_U8
? 0x80 : 0,
536 * prepare urb for playback data pipe
538 * Since a URB can handle only a single linear buffer, we must use double
539 * buffering when the data to be transferred overflows the buffer boundary.
540 * To avoid inconsistencies when updating hwptr_done, we use double buffering
543 static int prepare_playback_urb(struct snd_usb_substream
*subs
,
544 struct snd_pcm_runtime
*runtime
,
550 int period_elapsed
= 0;
551 struct snd_urb_ctx
*ctx
= urb
->context
;
553 stride
= runtime
->frame_bits
>> 3;
556 urb
->dev
= ctx
->subs
->dev
; /* we need to set this at each time */
557 urb
->number_of_packets
= 0;
558 spin_lock_irqsave(&subs
->lock
, flags
);
559 for (i
= 0; i
< ctx
->packets
; i
++) {
560 counts
= snd_usb_audio_next_packet_size(subs
);
561 /* set up descriptor */
562 urb
->iso_frame_desc
[i
].offset
= offs
* stride
;
563 urb
->iso_frame_desc
[i
].length
= counts
* stride
;
565 urb
->number_of_packets
++;
566 subs
->transfer_done
+= counts
;
567 if (subs
->transfer_done
>= runtime
->period_size
) {
568 subs
->transfer_done
-= runtime
->period_size
;
570 if (subs
->fmt_type
== USB_FORMAT_TYPE_II
) {
571 if (subs
->transfer_done
> 0) {
572 /* FIXME: fill-max mode is not
574 offs
-= subs
->transfer_done
;
575 counts
-= subs
->transfer_done
;
576 urb
->iso_frame_desc
[i
].length
=
578 subs
->transfer_done
= 0;
581 if (i
< ctx
->packets
) {
582 /* add a transfer delimiter */
583 urb
->iso_frame_desc
[i
].offset
=
585 urb
->iso_frame_desc
[i
].length
= 0;
586 urb
->number_of_packets
++;
591 /* finish at the frame boundary at/after the period boundary */
592 if (period_elapsed
&&
593 (i
& (subs
->packs_per_ms
- 1)) == subs
->packs_per_ms
- 1)
596 if (subs
->hwptr_done
+ offs
> runtime
->buffer_size
) {
597 /* err, the transferred area goes over buffer boundary. */
598 unsigned int len
= runtime
->buffer_size
- subs
->hwptr_done
;
599 memcpy(urb
->transfer_buffer
,
600 runtime
->dma_area
+ subs
->hwptr_done
* stride
,
602 memcpy(urb
->transfer_buffer
+ len
* stride
,
604 (offs
- len
) * stride
);
606 memcpy(urb
->transfer_buffer
,
607 runtime
->dma_area
+ subs
->hwptr_done
* stride
,
610 subs
->hwptr_done
+= offs
;
611 if (subs
->hwptr_done
>= runtime
->buffer_size
)
612 subs
->hwptr_done
-= runtime
->buffer_size
;
613 spin_unlock_irqrestore(&subs
->lock
, flags
);
614 urb
->transfer_buffer_length
= offs
* stride
;
616 snd_pcm_period_elapsed(subs
->pcm_substream
);
621 * process after playback data complete
624 static int retire_playback_urb(struct snd_usb_substream
*subs
,
625 struct snd_pcm_runtime
*runtime
,
634 static struct snd_urb_ops audio_urb_ops
[2] = {
636 .prepare
= prepare_nodata_playback_urb
,
637 .retire
= retire_playback_urb
,
638 .prepare_sync
= prepare_playback_sync_urb
,
639 .retire_sync
= retire_playback_sync_urb
,
642 .prepare
= prepare_capture_urb
,
643 .retire
= retire_capture_urb
,
644 .prepare_sync
= prepare_capture_sync_urb
,
645 .retire_sync
= retire_capture_sync_urb
,
649 static struct snd_urb_ops audio_urb_ops_high_speed
[2] = {
651 .prepare
= prepare_nodata_playback_urb
,
652 .retire
= retire_playback_urb
,
653 .prepare_sync
= prepare_playback_sync_urb_hs
,
654 .retire_sync
= retire_playback_sync_urb_hs
,
657 .prepare
= prepare_capture_urb
,
658 .retire
= retire_capture_urb
,
659 .prepare_sync
= prepare_capture_sync_urb_hs
,
660 .retire_sync
= retire_capture_sync_urb
,
665 * complete callback from data urb
667 static void snd_complete_urb(struct urb
*urb
)
669 struct snd_urb_ctx
*ctx
= urb
->context
;
670 struct snd_usb_substream
*subs
= ctx
->subs
;
671 struct snd_pcm_substream
*substream
= ctx
->subs
->pcm_substream
;
674 if ((subs
->running
&& subs
->ops
.retire(subs
, substream
->runtime
, urb
)) ||
675 ! subs
->running
|| /* can be stopped during retire callback */
676 (err
= subs
->ops
.prepare(subs
, substream
->runtime
, urb
)) < 0 ||
677 (err
= usb_submit_urb(urb
, GFP_ATOMIC
)) < 0) {
678 clear_bit(ctx
->index
, &subs
->active_mask
);
680 snd_printd(KERN_ERR
"cannot submit urb (err = %d)\n", err
);
681 snd_pcm_stop(substream
, SNDRV_PCM_STATE_XRUN
);
688 * complete callback from sync urb
690 static void snd_complete_sync_urb(struct urb
*urb
)
692 struct snd_urb_ctx
*ctx
= urb
->context
;
693 struct snd_usb_substream
*subs
= ctx
->subs
;
694 struct snd_pcm_substream
*substream
= ctx
->subs
->pcm_substream
;
697 if ((subs
->running
&& subs
->ops
.retire_sync(subs
, substream
->runtime
, urb
)) ||
698 ! subs
->running
|| /* can be stopped during retire callback */
699 (err
= subs
->ops
.prepare_sync(subs
, substream
->runtime
, urb
)) < 0 ||
700 (err
= usb_submit_urb(urb
, GFP_ATOMIC
)) < 0) {
701 clear_bit(ctx
->index
+ 16, &subs
->active_mask
);
703 snd_printd(KERN_ERR
"cannot submit sync urb (err = %d)\n", err
);
704 snd_pcm_stop(substream
, SNDRV_PCM_STATE_XRUN
);
710 /* get the physical page pointer at the given offset */
711 static struct page
*snd_pcm_get_vmalloc_page(struct snd_pcm_substream
*subs
,
712 unsigned long offset
)
714 void *pageptr
= subs
->runtime
->dma_area
+ offset
;
715 return vmalloc_to_page(pageptr
);
718 /* allocate virtual buffer; may be called more than once */
719 static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream
*subs
, size_t size
)
721 struct snd_pcm_runtime
*runtime
= subs
->runtime
;
722 if (runtime
->dma_area
) {
723 if (runtime
->dma_bytes
>= size
)
724 return 0; /* already large enough */
725 vfree(runtime
->dma_area
);
727 runtime
->dma_area
= vmalloc(size
);
728 if (! runtime
->dma_area
)
730 runtime
->dma_bytes
= size
;
734 /* free virtual buffer; may be called more than once */
735 static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream
*subs
)
737 struct snd_pcm_runtime
*runtime
= subs
->runtime
;
739 vfree(runtime
->dma_area
);
740 runtime
->dma_area
= NULL
;
746 * unlink active urbs.
748 static int deactivate_urbs(struct snd_usb_substream
*subs
, int force
, int can_sleep
)
755 if (!force
&& subs
->stream
->chip
->shutdown
) /* to be sure... */
758 async
= !can_sleep
&& async_unlink
;
760 if (! async
&& in_interrupt())
763 for (i
= 0; i
< subs
->nurbs
; i
++) {
764 if (test_bit(i
, &subs
->active_mask
)) {
765 if (! test_and_set_bit(i
, &subs
->unlink_mask
)) {
766 struct urb
*u
= subs
->dataurb
[i
].urb
;
774 if (subs
->syncpipe
) {
775 for (i
= 0; i
< SYNC_URBS
; i
++) {
776 if (test_bit(i
+16, &subs
->active_mask
)) {
777 if (! test_and_set_bit(i
+16, &subs
->unlink_mask
)) {
778 struct urb
*u
= subs
->syncurb
[i
].urb
;
791 static const char *usb_error_string(int err
)
797 return "endpoint not enabled";
799 return "endpoint stalled";
801 return "not enough bandwidth";
803 return "device disabled";
805 return "device suspended";
806 #ifndef CONFIG_USB_EHCI_SPLIT_ISO
808 return "enable CONFIG_USB_EHCI_SPLIT_ISO to play through a hub";
814 return "internal error";
816 return "unknown error";
821 * set up and start data/sync urbs
823 static int start_urbs(struct snd_usb_substream
*subs
, struct snd_pcm_runtime
*runtime
)
828 if (subs
->stream
->chip
->shutdown
)
831 for (i
= 0; i
< subs
->nurbs
; i
++) {
832 snd_assert(subs
->dataurb
[i
].urb
, return -EINVAL
);
833 if (subs
->ops
.prepare(subs
, runtime
, subs
->dataurb
[i
].urb
) < 0) {
834 snd_printk(KERN_ERR
"cannot prepare datapipe for urb %d\n", i
);
838 if (subs
->syncpipe
) {
839 for (i
= 0; i
< SYNC_URBS
; i
++) {
840 snd_assert(subs
->syncurb
[i
].urb
, return -EINVAL
);
841 if (subs
->ops
.prepare_sync(subs
, runtime
, subs
->syncurb
[i
].urb
) < 0) {
842 snd_printk(KERN_ERR
"cannot prepare syncpipe for urb %d\n", i
);
848 subs
->active_mask
= 0;
849 subs
->unlink_mask
= 0;
851 for (i
= 0; i
< subs
->nurbs
; i
++) {
852 err
= usb_submit_urb(subs
->dataurb
[i
].urb
, GFP_ATOMIC
);
854 snd_printk(KERN_ERR
"cannot submit datapipe "
855 "for urb %d, error %d: %s\n",
856 i
, err
, usb_error_string(err
));
859 set_bit(i
, &subs
->active_mask
);
861 if (subs
->syncpipe
) {
862 for (i
= 0; i
< SYNC_URBS
; i
++) {
863 err
= usb_submit_urb(subs
->syncurb
[i
].urb
, GFP_ATOMIC
);
865 snd_printk(KERN_ERR
"cannot submit syncpipe "
866 "for urb %d, error %d: %s\n",
867 i
, err
, usb_error_string(err
));
870 set_bit(i
+ 16, &subs
->active_mask
);
876 // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
877 deactivate_urbs(subs
, 0, 0);
883 * wait until all urbs are processed.
885 static int wait_clear_urbs(struct snd_usb_substream
*subs
)
887 unsigned long end_time
= jiffies
+ msecs_to_jiffies(1000);
893 for (i
= 0; i
< subs
->nurbs
; i
++) {
894 if (test_bit(i
, &subs
->active_mask
))
897 if (subs
->syncpipe
) {
898 for (i
= 0; i
< SYNC_URBS
; i
++) {
899 if (test_bit(i
+ 16, &subs
->active_mask
))
905 schedule_timeout_uninterruptible(1);
906 } while (time_before(jiffies
, end_time
));
908 snd_printk(KERN_ERR
"timeout: still %d active urbs..\n", alive
);
914 * return the current pcm pointer. just return the hwptr_done value.
916 static snd_pcm_uframes_t
snd_usb_pcm_pointer(struct snd_pcm_substream
*substream
)
918 struct snd_usb_substream
*subs
;
919 snd_pcm_uframes_t hwptr_done
;
921 subs
= (struct snd_usb_substream
*)substream
->runtime
->private_data
;
922 spin_lock(&subs
->lock
);
923 hwptr_done
= subs
->hwptr_done
;
924 spin_unlock(&subs
->lock
);
930 * start/stop playback substream
932 static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream
*substream
,
935 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
938 case SNDRV_PCM_TRIGGER_START
:
939 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
940 subs
->ops
.prepare
= prepare_playback_urb
;
942 case SNDRV_PCM_TRIGGER_STOP
:
943 return deactivate_urbs(subs
, 0, 0);
944 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
945 subs
->ops
.prepare
= prepare_nodata_playback_urb
;
953 * start/stop capture substream
955 static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream
*substream
,
958 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
961 case SNDRV_PCM_TRIGGER_START
:
962 subs
->ops
.retire
= retire_capture_urb
;
963 return start_urbs(subs
, substream
->runtime
);
964 case SNDRV_PCM_TRIGGER_STOP
:
965 return deactivate_urbs(subs
, 0, 0);
966 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
967 subs
->ops
.retire
= retire_paused_capture_urb
;
969 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
970 subs
->ops
.retire
= retire_capture_urb
;
981 static void release_urb_ctx(struct snd_urb_ctx
*u
)
985 usb_buffer_free(u
->subs
->dev
, u
->buffer_size
,
986 u
->urb
->transfer_buffer
,
987 u
->urb
->transfer_dma
);
988 usb_free_urb(u
->urb
);
994 * release a substream
996 static void release_substream_urbs(struct snd_usb_substream
*subs
, int force
)
1000 /* stop urbs (to be sure) */
1001 deactivate_urbs(subs
, force
, 1);
1002 wait_clear_urbs(subs
);
1004 for (i
= 0; i
< MAX_URBS
; i
++)
1005 release_urb_ctx(&subs
->dataurb
[i
]);
1006 for (i
= 0; i
< SYNC_URBS
; i
++)
1007 release_urb_ctx(&subs
->syncurb
[i
]);
1008 usb_buffer_free(subs
->dev
, SYNC_URBS
* 4,
1009 subs
->syncbuf
, subs
->sync_dma
);
1010 subs
->syncbuf
= NULL
;
1015 * initialize a substream for plaback/capture
1017 static int init_substream_urbs(struct snd_usb_substream
*subs
, unsigned int period_bytes
,
1018 unsigned int rate
, unsigned int frame_bits
)
1020 unsigned int maxsize
, n
, i
;
1021 int is_playback
= subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
;
1022 unsigned int npacks
[MAX_URBS
], urb_packs
, total_packs
, packs_per_ms
;
1024 /* calculate the frequency in 16.16 format */
1025 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
1026 subs
->freqn
= get_usb_full_speed_rate(rate
);
1028 subs
->freqn
= get_usb_high_speed_rate(rate
);
1029 subs
->freqm
= subs
->freqn
;
1030 /* calculate max. frequency */
1031 if (subs
->maxpacksize
) {
1032 /* whatever fits into a max. size packet */
1033 maxsize
= subs
->maxpacksize
;
1034 subs
->freqmax
= (maxsize
/ (frame_bits
>> 3))
1035 << (16 - subs
->datainterval
);
1037 /* no max. packet size: just take 25% higher than nominal */
1038 subs
->freqmax
= subs
->freqn
+ (subs
->freqn
>> 2);
1039 maxsize
= ((subs
->freqmax
+ 0xffff) * (frame_bits
>> 3))
1040 >> (16 - subs
->datainterval
);
1045 subs
->curpacksize
= subs
->maxpacksize
;
1047 subs
->curpacksize
= maxsize
;
1049 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_HIGH
)
1050 packs_per_ms
= 8 >> subs
->datainterval
;
1053 subs
->packs_per_ms
= packs_per_ms
;
1056 urb_packs
= nrpacks
;
1057 urb_packs
= max(urb_packs
, (unsigned int)MIN_PACKS_URB
);
1058 urb_packs
= min(urb_packs
, (unsigned int)MAX_PACKS
);
1061 urb_packs
*= packs_per_ms
;
1063 /* decide how many packets to be used */
1065 unsigned int minsize
;
1066 /* determine how small a packet can be */
1067 minsize
= (subs
->freqn
>> (16 - subs
->datainterval
))
1068 * (frame_bits
>> 3);
1069 /* with sync from device, assume it can be 12% lower */
1071 minsize
-= minsize
>> 3;
1072 minsize
= max(minsize
, 1u);
1073 total_packs
= (period_bytes
+ minsize
- 1) / minsize
;
1074 /* round up to multiple of packs_per_ms */
1075 total_packs
= (total_packs
+ packs_per_ms
- 1)
1076 & ~(packs_per_ms
- 1);
1077 /* we need at least two URBs for queueing */
1078 if (total_packs
< 2 * MIN_PACKS_URB
* packs_per_ms
)
1079 total_packs
= 2 * MIN_PACKS_URB
* packs_per_ms
;
1081 total_packs
= MAX_URBS
* urb_packs
;
1083 subs
->nurbs
= (total_packs
+ urb_packs
- 1) / urb_packs
;
1084 if (subs
->nurbs
> MAX_URBS
) {
1086 subs
->nurbs
= MAX_URBS
;
1087 total_packs
= MAX_URBS
* urb_packs
;
1090 for (i
= 0; i
< subs
->nurbs
; i
++) {
1091 npacks
[i
] = n
> urb_packs
? urb_packs
: n
;
1094 if (subs
->nurbs
<= 1) {
1095 /* too little - we need at least two packets
1096 * to ensure contiguous playback/capture
1099 npacks
[0] = (total_packs
+ 1) / 2;
1100 npacks
[1] = total_packs
- npacks
[0];
1101 } else if (npacks
[subs
->nurbs
-1] < MIN_PACKS_URB
* packs_per_ms
) {
1102 /* the last packet is too small.. */
1103 if (subs
->nurbs
> 2) {
1104 /* merge to the first one */
1105 npacks
[0] += npacks
[subs
->nurbs
- 1];
1110 npacks
[0] = (total_packs
+ 1) / 2;
1111 npacks
[1] = total_packs
- npacks
[0];
1115 /* allocate and initialize data urbs */
1116 for (i
= 0; i
< subs
->nurbs
; i
++) {
1117 struct snd_urb_ctx
*u
= &subs
->dataurb
[i
];
1120 u
->packets
= npacks
[i
];
1121 u
->buffer_size
= maxsize
* u
->packets
;
1122 if (subs
->fmt_type
== USB_FORMAT_TYPE_II
)
1123 u
->packets
++; /* for transfer delimiter */
1124 u
->urb
= usb_alloc_urb(u
->packets
, GFP_KERNEL
);
1127 u
->urb
->transfer_buffer
=
1128 usb_buffer_alloc(subs
->dev
, u
->buffer_size
, GFP_KERNEL
,
1129 &u
->urb
->transfer_dma
);
1130 if (! u
->urb
->transfer_buffer
)
1132 u
->urb
->pipe
= subs
->datapipe
;
1133 u
->urb
->transfer_flags
= URB_ISO_ASAP
| URB_NO_TRANSFER_DMA_MAP
;
1134 u
->urb
->interval
= 1 << subs
->datainterval
;
1135 u
->urb
->context
= u
;
1136 u
->urb
->complete
= snd_complete_urb
;
1139 if (subs
->syncpipe
) {
1140 /* allocate and initialize sync urbs */
1141 subs
->syncbuf
= usb_buffer_alloc(subs
->dev
, SYNC_URBS
* 4,
1142 GFP_KERNEL
, &subs
->sync_dma
);
1143 if (! subs
->syncbuf
)
1145 for (i
= 0; i
< SYNC_URBS
; i
++) {
1146 struct snd_urb_ctx
*u
= &subs
->syncurb
[i
];
1150 u
->urb
= usb_alloc_urb(1, GFP_KERNEL
);
1153 u
->urb
->transfer_buffer
= subs
->syncbuf
+ i
* 4;
1154 u
->urb
->transfer_dma
= subs
->sync_dma
+ i
* 4;
1155 u
->urb
->transfer_buffer_length
= 4;
1156 u
->urb
->pipe
= subs
->syncpipe
;
1157 u
->urb
->transfer_flags
= URB_ISO_ASAP
|
1158 URB_NO_TRANSFER_DMA_MAP
;
1159 u
->urb
->number_of_packets
= 1;
1160 u
->urb
->interval
= 1 << subs
->syncinterval
;
1161 u
->urb
->context
= u
;
1162 u
->urb
->complete
= snd_complete_sync_urb
;
1168 release_substream_urbs(subs
, 0);
1174 * find a matching audio format
1176 static struct audioformat
*find_format(struct snd_usb_substream
*subs
, unsigned int format
,
1177 unsigned int rate
, unsigned int channels
)
1179 struct list_head
*p
;
1180 struct audioformat
*found
= NULL
;
1181 int cur_attr
= 0, attr
;
1183 list_for_each(p
, &subs
->fmt_list
) {
1184 struct audioformat
*fp
;
1185 fp
= list_entry(p
, struct audioformat
, list
);
1186 if (fp
->format
!= format
|| fp
->channels
!= channels
)
1188 if (rate
< fp
->rate_min
|| rate
> fp
->rate_max
)
1190 if (! (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)) {
1192 for (i
= 0; i
< fp
->nr_rates
; i
++)
1193 if (fp
->rate_table
[i
] == rate
)
1195 if (i
>= fp
->nr_rates
)
1198 attr
= fp
->ep_attr
& EP_ATTR_MASK
;
1204 /* avoid async out and adaptive in if the other method
1205 * supports the same format.
1206 * this is a workaround for the case like
1207 * M-audio audiophile USB.
1209 if (attr
!= cur_attr
) {
1210 if ((attr
== EP_ATTR_ASYNC
&&
1211 subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) ||
1212 (attr
== EP_ATTR_ADAPTIVE
&&
1213 subs
->direction
== SNDRV_PCM_STREAM_CAPTURE
))
1215 if ((cur_attr
== EP_ATTR_ASYNC
&&
1216 subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) ||
1217 (cur_attr
== EP_ATTR_ADAPTIVE
&&
1218 subs
->direction
== SNDRV_PCM_STREAM_CAPTURE
)) {
1224 /* find the format with the largest max. packet size */
1225 if (fp
->maxpacksize
> found
->maxpacksize
) {
1235 * initialize the picth control and sample rate
1237 static int init_usb_pitch(struct usb_device
*dev
, int iface
,
1238 struct usb_host_interface
*alts
,
1239 struct audioformat
*fmt
)
1242 unsigned char data
[1];
1245 ep
= get_endpoint(alts
, 0)->bEndpointAddress
;
1246 /* if endpoint has pitch control, enable it */
1247 if (fmt
->attributes
& EP_CS_ATTR_PITCH_CONTROL
) {
1249 if ((err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), SET_CUR
,
1250 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_OUT
,
1251 PITCH_CONTROL
<< 8, ep
, data
, 1, 1000)) < 0) {
1252 snd_printk(KERN_ERR
"%d:%d:%d: cannot set enable PITCH\n",
1253 dev
->devnum
, iface
, ep
);
1260 static int init_usb_sample_rate(struct usb_device
*dev
, int iface
,
1261 struct usb_host_interface
*alts
,
1262 struct audioformat
*fmt
, int rate
)
1265 unsigned char data
[3];
1268 ep
= get_endpoint(alts
, 0)->bEndpointAddress
;
1269 /* if endpoint has sampling rate control, set it */
1270 if (fmt
->attributes
& EP_CS_ATTR_SAMPLE_RATE
) {
1273 data
[1] = rate
>> 8;
1274 data
[2] = rate
>> 16;
1275 if ((err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), SET_CUR
,
1276 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_OUT
,
1277 SAMPLING_FREQ_CONTROL
<< 8, ep
, data
, 3, 1000)) < 0) {
1278 snd_printk(KERN_ERR
"%d:%d:%d: cannot set freq %d to ep 0x%x\n",
1279 dev
->devnum
, iface
, fmt
->altsetting
, rate
, ep
);
1282 if ((err
= snd_usb_ctl_msg(dev
, usb_rcvctrlpipe(dev
, 0), GET_CUR
,
1283 USB_TYPE_CLASS
|USB_RECIP_ENDPOINT
|USB_DIR_IN
,
1284 SAMPLING_FREQ_CONTROL
<< 8, ep
, data
, 3, 1000)) < 0) {
1285 snd_printk(KERN_WARNING
"%d:%d:%d: cannot get freq at ep 0x%x\n",
1286 dev
->devnum
, iface
, fmt
->altsetting
, ep
);
1287 return 0; /* some devices don't support reading */
1289 crate
= data
[0] | (data
[1] << 8) | (data
[2] << 16);
1290 if (crate
!= rate
) {
1291 snd_printd(KERN_WARNING
"current rate %d is different from the runtime rate %d\n", crate
, rate
);
1292 // runtime->rate = crate;
1299 * find a matching format and set up the interface
1301 static int set_format(struct snd_usb_substream
*subs
, struct audioformat
*fmt
)
1303 struct usb_device
*dev
= subs
->dev
;
1304 struct usb_host_interface
*alts
;
1305 struct usb_interface_descriptor
*altsd
;
1306 struct usb_interface
*iface
;
1307 unsigned int ep
, attr
;
1308 int is_playback
= subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
;
1311 iface
= usb_ifnum_to_if(dev
, fmt
->iface
);
1312 snd_assert(iface
, return -EINVAL
);
1313 alts
= &iface
->altsetting
[fmt
->altset_idx
];
1314 altsd
= get_iface_desc(alts
);
1315 snd_assert(altsd
->bAlternateSetting
== fmt
->altsetting
, return -EINVAL
);
1317 if (fmt
== subs
->cur_audiofmt
)
1320 /* close the old interface */
1321 if (subs
->interface
>= 0 && subs
->interface
!= fmt
->iface
) {
1322 usb_set_interface(subs
->dev
, subs
->interface
, 0);
1323 subs
->interface
= -1;
1328 if (subs
->interface
!= fmt
->iface
|| subs
->format
!= fmt
->altset_idx
) {
1329 if (usb_set_interface(dev
, fmt
->iface
, fmt
->altsetting
) < 0) {
1330 snd_printk(KERN_ERR
"%d:%d:%d: usb_set_interface failed\n",
1331 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1334 snd_printdd(KERN_INFO
"setting usb interface %d:%d\n", fmt
->iface
, fmt
->altsetting
);
1335 subs
->interface
= fmt
->iface
;
1336 subs
->format
= fmt
->altset_idx
;
1339 /* create a data pipe */
1340 ep
= fmt
->endpoint
& USB_ENDPOINT_NUMBER_MASK
;
1342 subs
->datapipe
= usb_sndisocpipe(dev
, ep
);
1344 subs
->datapipe
= usb_rcvisocpipe(dev
, ep
);
1345 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_HIGH
&&
1346 get_endpoint(alts
, 0)->bInterval
>= 1 &&
1347 get_endpoint(alts
, 0)->bInterval
<= 4)
1348 subs
->datainterval
= get_endpoint(alts
, 0)->bInterval
- 1;
1350 subs
->datainterval
= 0;
1351 subs
->syncpipe
= subs
->syncinterval
= 0;
1352 subs
->maxpacksize
= fmt
->maxpacksize
;
1355 /* we need a sync pipe in async OUT or adaptive IN mode */
1356 /* check the number of EP, since some devices have broken
1357 * descriptors which fool us. if it has only one EP,
1358 * assume it as adaptive-out or sync-in.
1360 attr
= fmt
->ep_attr
& EP_ATTR_MASK
;
1361 if (((is_playback
&& attr
== EP_ATTR_ASYNC
) ||
1362 (! is_playback
&& attr
== EP_ATTR_ADAPTIVE
)) &&
1363 altsd
->bNumEndpoints
>= 2) {
1364 /* check sync-pipe endpoint */
1365 /* ... and check descriptor size before accessing bSynchAddress
1366 because there is a version of the SB Audigy 2 NX firmware lacking
1367 the audio fields in the endpoint descriptors */
1368 if ((get_endpoint(alts
, 1)->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) != 0x01 ||
1369 (get_endpoint(alts
, 1)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1370 get_endpoint(alts
, 1)->bSynchAddress
!= 0)) {
1371 snd_printk(KERN_ERR
"%d:%d:%d : invalid synch pipe\n",
1372 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1375 ep
= get_endpoint(alts
, 1)->bEndpointAddress
;
1376 if (get_endpoint(alts
, 0)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1377 (( is_playback
&& ep
!= (unsigned int)(get_endpoint(alts
, 0)->bSynchAddress
| USB_DIR_IN
)) ||
1378 (!is_playback
&& ep
!= (unsigned int)(get_endpoint(alts
, 0)->bSynchAddress
& ~USB_DIR_IN
)))) {
1379 snd_printk(KERN_ERR
"%d:%d:%d : invalid synch pipe\n",
1380 dev
->devnum
, fmt
->iface
, fmt
->altsetting
);
1383 ep
&= USB_ENDPOINT_NUMBER_MASK
;
1385 subs
->syncpipe
= usb_rcvisocpipe(dev
, ep
);
1387 subs
->syncpipe
= usb_sndisocpipe(dev
, ep
);
1388 if (get_endpoint(alts
, 1)->bLength
>= USB_DT_ENDPOINT_AUDIO_SIZE
&&
1389 get_endpoint(alts
, 1)->bRefresh
>= 1 &&
1390 get_endpoint(alts
, 1)->bRefresh
<= 9)
1391 subs
->syncinterval
= get_endpoint(alts
, 1)->bRefresh
;
1392 else if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
1393 subs
->syncinterval
= 1;
1394 else if (get_endpoint(alts
, 1)->bInterval
>= 1 &&
1395 get_endpoint(alts
, 1)->bInterval
<= 16)
1396 subs
->syncinterval
= get_endpoint(alts
, 1)->bInterval
- 1;
1398 subs
->syncinterval
= 3;
1401 /* always fill max packet size */
1402 if (fmt
->attributes
& EP_CS_ATTR_FILL_MAX
)
1405 if ((err
= init_usb_pitch(dev
, subs
->interface
, alts
, fmt
)) < 0)
1408 subs
->cur_audiofmt
= fmt
;
1411 printk("setting done: format = %d, rate = %d, channels = %d\n",
1412 fmt
->format
, fmt
->rate
, fmt
->channels
);
1413 printk(" datapipe = 0x%0x, syncpipe = 0x%0x\n",
1414 subs
->datapipe
, subs
->syncpipe
);
1421 * hw_params callback
1423 * allocate a buffer and set the given audio format.
1425 * so far we use a physically linear buffer although packetize transfer
1426 * doesn't need a continuous area.
1427 * if sg buffer is supported on the later version of alsa, we'll follow
1430 static int snd_usb_hw_params(struct snd_pcm_substream
*substream
,
1431 struct snd_pcm_hw_params
*hw_params
)
1433 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
1434 struct audioformat
*fmt
;
1435 unsigned int channels
, rate
, format
;
1438 ret
= snd_pcm_alloc_vmalloc_buffer(substream
,
1439 params_buffer_bytes(hw_params
));
1443 format
= params_format(hw_params
);
1444 rate
= params_rate(hw_params
);
1445 channels
= params_channels(hw_params
);
1446 fmt
= find_format(subs
, format
, rate
, channels
);
1448 snd_printd(KERN_DEBUG
"cannot set format: format = 0x%x, rate = %d, channels = %d\n",
1449 format
, rate
, channels
);
1453 changed
= subs
->cur_audiofmt
!= fmt
||
1454 subs
->period_bytes
!= params_period_bytes(hw_params
) ||
1455 subs
->cur_rate
!= rate
;
1456 if ((ret
= set_format(subs
, fmt
)) < 0)
1459 if (subs
->cur_rate
!= rate
) {
1460 struct usb_host_interface
*alts
;
1461 struct usb_interface
*iface
;
1462 iface
= usb_ifnum_to_if(subs
->dev
, fmt
->iface
);
1463 alts
= &iface
->altsetting
[fmt
->altset_idx
];
1464 ret
= init_usb_sample_rate(subs
->dev
, subs
->interface
, alts
, fmt
, rate
);
1467 subs
->cur_rate
= rate
;
1471 /* format changed */
1472 release_substream_urbs(subs
, 0);
1473 /* influenced: period_bytes, channels, rate, format, */
1474 ret
= init_substream_urbs(subs
, params_period_bytes(hw_params
),
1475 params_rate(hw_params
),
1476 snd_pcm_format_physical_width(params_format(hw_params
)) * params_channels(hw_params
));
1485 * reset the audio format and release the buffer
1487 static int snd_usb_hw_free(struct snd_pcm_substream
*substream
)
1489 struct snd_usb_substream
*subs
= substream
->runtime
->private_data
;
1491 subs
->cur_audiofmt
= NULL
;
1493 subs
->period_bytes
= 0;
1494 if (!subs
->stream
->chip
->shutdown
)
1495 release_substream_urbs(subs
, 0);
1496 return snd_pcm_free_vmalloc_buffer(substream
);
1502 * only a few subtle things...
1504 static int snd_usb_pcm_prepare(struct snd_pcm_substream
*substream
)
1506 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1507 struct snd_usb_substream
*subs
= runtime
->private_data
;
1509 if (! subs
->cur_audiofmt
) {
1510 snd_printk(KERN_ERR
"usbaudio: no format is specified!\n");
1514 /* some unit conversions in runtime */
1515 subs
->maxframesize
= bytes_to_frames(runtime
, subs
->maxpacksize
);
1516 subs
->curframesize
= bytes_to_frames(runtime
, subs
->curpacksize
);
1518 /* reset the pointer */
1519 subs
->hwptr_done
= 0;
1520 subs
->transfer_done
= 0;
1523 /* clear urbs (to be sure) */
1524 deactivate_urbs(subs
, 0, 1);
1525 wait_clear_urbs(subs
);
1527 /* for playback, submit the URBs now; otherwise, the first hwptr_done
1528 * updates for all URBs would happen at the same time when starting */
1529 if (subs
->direction
== SNDRV_PCM_STREAM_PLAYBACK
) {
1530 subs
->ops
.prepare
= prepare_nodata_playback_urb
;
1531 return start_urbs(subs
, runtime
);
1536 static struct snd_pcm_hardware snd_usb_hardware
=
1538 .info
= SNDRV_PCM_INFO_MMAP
|
1539 SNDRV_PCM_INFO_MMAP_VALID
|
1540 SNDRV_PCM_INFO_BATCH
|
1541 SNDRV_PCM_INFO_INTERLEAVED
|
1542 SNDRV_PCM_INFO_BLOCK_TRANSFER
|
1543 SNDRV_PCM_INFO_PAUSE
,
1544 .buffer_bytes_max
= 1024 * 1024,
1545 .period_bytes_min
= 64,
1546 .period_bytes_max
= 512 * 1024,
1548 .periods_max
= 1024,
1555 #ifdef HW_CONST_DEBUG
1556 #define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
1558 #define hwc_debug(fmt, args...) /**/
1561 static int hw_check_valid_format(struct snd_pcm_hw_params
*params
, struct audioformat
*fp
)
1563 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
);
1564 struct snd_interval
*ct
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
1565 struct snd_mask
*fmts
= hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
);
1567 /* check the format */
1568 if (! snd_mask_test(fmts
, fp
->format
)) {
1569 hwc_debug(" > check: no supported format %d\n", fp
->format
);
1572 /* check the channels */
1573 if (fp
->channels
< ct
->min
|| fp
->channels
> ct
->max
) {
1574 hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp
->channels
, ct
->min
, ct
->max
);
1577 /* check the rate is within the range */
1578 if (fp
->rate_min
> it
->max
|| (fp
->rate_min
== it
->max
&& it
->openmax
)) {
1579 hwc_debug(" > check: rate_min %d > max %d\n", fp
->rate_min
, it
->max
);
1582 if (fp
->rate_max
< it
->min
|| (fp
->rate_max
== it
->min
&& it
->openmin
)) {
1583 hwc_debug(" > check: rate_max %d < min %d\n", fp
->rate_max
, it
->min
);
1589 static int hw_rule_rate(struct snd_pcm_hw_params
*params
,
1590 struct snd_pcm_hw_rule
*rule
)
1592 struct snd_usb_substream
*subs
= rule
->private;
1593 struct list_head
*p
;
1594 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
);
1595 unsigned int rmin
, rmax
;
1598 hwc_debug("hw_rule_rate: (%d,%d)\n", it
->min
, it
->max
);
1601 list_for_each(p
, &subs
->fmt_list
) {
1602 struct audioformat
*fp
;
1603 fp
= list_entry(p
, struct audioformat
, list
);
1604 if (! hw_check_valid_format(params
, fp
))
1607 if (rmin
> fp
->rate_min
)
1608 rmin
= fp
->rate_min
;
1609 if (rmax
< fp
->rate_max
)
1610 rmax
= fp
->rate_max
;
1612 rmin
= fp
->rate_min
;
1613 rmax
= fp
->rate_max
;
1618 hwc_debug(" --> get empty\n");
1624 if (it
->min
< rmin
) {
1629 if (it
->max
> rmax
) {
1634 if (snd_interval_checkempty(it
)) {
1638 hwc_debug(" --> (%d, %d) (changed = %d)\n", it
->min
, it
->max
, changed
);
1643 static int hw_rule_channels(struct snd_pcm_hw_params
*params
,
1644 struct snd_pcm_hw_rule
*rule
)
1646 struct snd_usb_substream
*subs
= rule
->private;
1647 struct list_head
*p
;
1648 struct snd_interval
*it
= hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
);
1649 unsigned int rmin
, rmax
;
1652 hwc_debug("hw_rule_channels: (%d,%d)\n", it
->min
, it
->max
);
1655 list_for_each(p
, &subs
->fmt_list
) {
1656 struct audioformat
*fp
;
1657 fp
= list_entry(p
, struct audioformat
, list
);
1658 if (! hw_check_valid_format(params
, fp
))
1661 if (rmin
> fp
->channels
)
1662 rmin
= fp
->channels
;
1663 if (rmax
< fp
->channels
)
1664 rmax
= fp
->channels
;
1666 rmin
= fp
->channels
;
1667 rmax
= fp
->channels
;
1672 hwc_debug(" --> get empty\n");
1678 if (it
->min
< rmin
) {
1683 if (it
->max
> rmax
) {
1688 if (snd_interval_checkempty(it
)) {
1692 hwc_debug(" --> (%d, %d) (changed = %d)\n", it
->min
, it
->max
, changed
);
1696 static int hw_rule_format(struct snd_pcm_hw_params
*params
,
1697 struct snd_pcm_hw_rule
*rule
)
1699 struct snd_usb_substream
*subs
= rule
->private;
1700 struct list_head
*p
;
1701 struct snd_mask
*fmt
= hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
);
1706 hwc_debug("hw_rule_format: %x:%x\n", fmt
->bits
[0], fmt
->bits
[1]);
1708 list_for_each(p
, &subs
->fmt_list
) {
1709 struct audioformat
*fp
;
1710 fp
= list_entry(p
, struct audioformat
, list
);
1711 if (! hw_check_valid_format(params
, fp
))
1713 fbits
|= (1ULL << fp
->format
);
1716 oldbits
[0] = fmt
->bits
[0];
1717 oldbits
[1] = fmt
->bits
[1];
1718 fmt
->bits
[0] &= (u32
)fbits
;
1719 fmt
->bits
[1] &= (u32
)(fbits
>> 32);
1720 if (! fmt
->bits
[0] && ! fmt
->bits
[1]) {
1721 hwc_debug(" --> get empty\n");
1724 changed
= (oldbits
[0] != fmt
->bits
[0] || oldbits
[1] != fmt
->bits
[1]);
1725 hwc_debug(" --> %x:%x (changed = %d)\n", fmt
->bits
[0], fmt
->bits
[1], changed
);
1732 * check whether the registered audio formats need special hw-constraints
1734 static int check_hw_params_convention(struct snd_usb_substream
*subs
)
1739 u32 cmaster
, rmaster
;
1740 u32 rate_min
= 0, rate_max
= 0;
1741 struct list_head
*p
;
1744 channels
= kcalloc(MAX_MASK
, sizeof(u32
), GFP_KERNEL
);
1745 rates
= kcalloc(MAX_MASK
, sizeof(u32
), GFP_KERNEL
);
1747 list_for_each(p
, &subs
->fmt_list
) {
1748 struct audioformat
*f
;
1749 f
= list_entry(p
, struct audioformat
, list
);
1750 /* unconventional channels? */
1751 if (f
->channels
> 32)
1753 /* continuous rate min/max matches? */
1754 if (f
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
1755 if (rate_min
&& f
->rate_min
!= rate_min
)
1757 if (rate_max
&& f
->rate_max
!= rate_max
)
1759 rate_min
= f
->rate_min
;
1760 rate_max
= f
->rate_max
;
1762 /* combination of continuous rates and fixed rates? */
1763 if (rates
[f
->format
] & SNDRV_PCM_RATE_CONTINUOUS
) {
1764 if (f
->rates
!= rates
[f
->format
])
1767 if (f
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
1768 if (rates
[f
->format
] && rates
[f
->format
] != f
->rates
)
1771 channels
[f
->format
] |= (1 << f
->channels
);
1772 rates
[f
->format
] |= f
->rates
;
1777 /* check whether channels and rates match for all formats */
1778 cmaster
= rmaster
= 0;
1779 for (i
= 0; i
< MAX_MASK
; i
++) {
1780 if (cmaster
!= channels
[i
] && cmaster
&& channels
[i
])
1782 if (rmaster
!= rates
[i
] && rmaster
&& rates
[i
])
1785 cmaster
= channels
[i
];
1789 /* check whether channels match for all distinct rates */
1790 memset(channels
, 0, MAX_MASK
* sizeof(u32
));
1791 list_for_each(p
, &subs
->fmt_list
) {
1792 struct audioformat
*f
;
1793 f
= list_entry(p
, struct audioformat
, list
);
1794 if (f
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)
1796 for (i
= 0; i
< 32; i
++) {
1797 if (f
->rates
& (1 << i
))
1798 channels
[i
] |= (1 << f
->channels
);
1802 for (i
= 0; i
< 32; i
++) {
1803 if (cmaster
!= channels
[i
] && cmaster
&& channels
[i
])
1806 cmaster
= channels
[i
];
1817 * If the device supports unusual bit rates, does the request meet these?
1819 static int snd_usb_pcm_check_knot(struct snd_pcm_runtime
*runtime
,
1820 struct snd_usb_substream
*subs
)
1822 struct audioformat
*fp
;
1823 int count
= 0, needs_knot
= 0;
1826 list_for_each_entry(fp
, &subs
->fmt_list
, list
) {
1827 if (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
)
1829 count
+= fp
->nr_rates
;
1836 subs
->rate_list
.count
= count
;
1837 subs
->rate_list
.list
= kmalloc(sizeof(int) * count
, GFP_KERNEL
);
1838 subs
->rate_list
.mask
= 0;
1840 list_for_each_entry(fp
, &subs
->fmt_list
, list
) {
1842 for (i
= 0; i
< fp
->nr_rates
; i
++)
1843 subs
->rate_list
.list
[count
++] = fp
->rate_table
[i
];
1845 err
= snd_pcm_hw_constraint_list(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
,
1855 * set up the runtime hardware information.
1858 static int setup_hw_info(struct snd_pcm_runtime
*runtime
, struct snd_usb_substream
*subs
)
1860 struct list_head
*p
;
1863 runtime
->hw
.formats
= subs
->formats
;
1865 runtime
->hw
.rate_min
= 0x7fffffff;
1866 runtime
->hw
.rate_max
= 0;
1867 runtime
->hw
.channels_min
= 256;
1868 runtime
->hw
.channels_max
= 0;
1869 runtime
->hw
.rates
= 0;
1870 /* check min/max rates and channels */
1871 list_for_each(p
, &subs
->fmt_list
) {
1872 struct audioformat
*fp
;
1873 fp
= list_entry(p
, struct audioformat
, list
);
1874 runtime
->hw
.rates
|= fp
->rates
;
1875 if (runtime
->hw
.rate_min
> fp
->rate_min
)
1876 runtime
->hw
.rate_min
= fp
->rate_min
;
1877 if (runtime
->hw
.rate_max
< fp
->rate_max
)
1878 runtime
->hw
.rate_max
= fp
->rate_max
;
1879 if (runtime
->hw
.channels_min
> fp
->channels
)
1880 runtime
->hw
.channels_min
= fp
->channels
;
1881 if (runtime
->hw
.channels_max
< fp
->channels
)
1882 runtime
->hw
.channels_max
= fp
->channels
;
1883 if (fp
->fmt_type
== USB_FORMAT_TYPE_II
&& fp
->frame_size
> 0) {
1884 /* FIXME: there might be more than one audio formats... */
1885 runtime
->hw
.period_bytes_min
= runtime
->hw
.period_bytes_max
=
1890 /* set the period time minimum 1ms */
1891 snd_pcm_hw_constraint_minmax(runtime
, SNDRV_PCM_HW_PARAM_PERIOD_TIME
,
1892 1000 * MIN_PACKS_URB
,
1893 /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX
);
1895 if (check_hw_params_convention(subs
)) {
1896 hwc_debug("setting extra hw constraints...\n");
1897 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
,
1899 SNDRV_PCM_HW_PARAM_FORMAT
,
1900 SNDRV_PCM_HW_PARAM_CHANNELS
,
1903 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_CHANNELS
,
1904 hw_rule_channels
, subs
,
1905 SNDRV_PCM_HW_PARAM_FORMAT
,
1906 SNDRV_PCM_HW_PARAM_RATE
,
1909 if ((err
= snd_pcm_hw_rule_add(runtime
, 0, SNDRV_PCM_HW_PARAM_FORMAT
,
1910 hw_rule_format
, subs
,
1911 SNDRV_PCM_HW_PARAM_RATE
,
1912 SNDRV_PCM_HW_PARAM_CHANNELS
,
1915 if ((err
= snd_usb_pcm_check_knot(runtime
, subs
)) < 0)
1921 static int snd_usb_pcm_open(struct snd_pcm_substream
*substream
, int direction
)
1923 struct snd_usb_stream
*as
= snd_pcm_substream_chip(substream
);
1924 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1925 struct snd_usb_substream
*subs
= &as
->substream
[direction
];
1927 subs
->interface
= -1;
1929 runtime
->hw
= snd_usb_hardware
;
1930 runtime
->private_data
= subs
;
1931 subs
->pcm_substream
= substream
;
1932 return setup_hw_info(runtime
, subs
);
1935 static int snd_usb_pcm_close(struct snd_pcm_substream
*substream
, int direction
)
1937 struct snd_usb_stream
*as
= snd_pcm_substream_chip(substream
);
1938 struct snd_usb_substream
*subs
= &as
->substream
[direction
];
1940 if (subs
->interface
>= 0) {
1941 usb_set_interface(subs
->dev
, subs
->interface
, 0);
1942 subs
->interface
= -1;
1944 subs
->pcm_substream
= NULL
;
1948 static int snd_usb_playback_open(struct snd_pcm_substream
*substream
)
1950 return snd_usb_pcm_open(substream
, SNDRV_PCM_STREAM_PLAYBACK
);
1953 static int snd_usb_playback_close(struct snd_pcm_substream
*substream
)
1955 return snd_usb_pcm_close(substream
, SNDRV_PCM_STREAM_PLAYBACK
);
1958 static int snd_usb_capture_open(struct snd_pcm_substream
*substream
)
1960 return snd_usb_pcm_open(substream
, SNDRV_PCM_STREAM_CAPTURE
);
1963 static int snd_usb_capture_close(struct snd_pcm_substream
*substream
)
1965 return snd_usb_pcm_close(substream
, SNDRV_PCM_STREAM_CAPTURE
);
1968 static struct snd_pcm_ops snd_usb_playback_ops
= {
1969 .open
= snd_usb_playback_open
,
1970 .close
= snd_usb_playback_close
,
1971 .ioctl
= snd_pcm_lib_ioctl
,
1972 .hw_params
= snd_usb_hw_params
,
1973 .hw_free
= snd_usb_hw_free
,
1974 .prepare
= snd_usb_pcm_prepare
,
1975 .trigger
= snd_usb_pcm_playback_trigger
,
1976 .pointer
= snd_usb_pcm_pointer
,
1977 .page
= snd_pcm_get_vmalloc_page
,
1980 static struct snd_pcm_ops snd_usb_capture_ops
= {
1981 .open
= snd_usb_capture_open
,
1982 .close
= snd_usb_capture_close
,
1983 .ioctl
= snd_pcm_lib_ioctl
,
1984 .hw_params
= snd_usb_hw_params
,
1985 .hw_free
= snd_usb_hw_free
,
1986 .prepare
= snd_usb_pcm_prepare
,
1987 .trigger
= snd_usb_pcm_capture_trigger
,
1988 .pointer
= snd_usb_pcm_pointer
,
1989 .page
= snd_pcm_get_vmalloc_page
,
1999 * combine bytes and get an integer value
2001 unsigned int snd_usb_combine_bytes(unsigned char *bytes
, int size
)
2004 case 1: return *bytes
;
2005 case 2: return combine_word(bytes
);
2006 case 3: return combine_triple(bytes
);
2007 case 4: return combine_quad(bytes
);
2013 * parse descriptor buffer and return the pointer starting the given
2016 void *snd_usb_find_desc(void *descstart
, int desclen
, void *after
, u8 dtype
)
2028 if (p
[1] == dtype
&& (!after
|| (void *)p
> after
)) {
2037 * find a class-specified interface descriptor with the given subtype.
2039 void *snd_usb_find_csint_desc(void *buffer
, int buflen
, void *after
, u8 dsubtype
)
2041 unsigned char *p
= after
;
2043 while ((p
= snd_usb_find_desc(buffer
, buflen
, p
,
2044 USB_DT_CS_INTERFACE
)) != NULL
) {
2045 if (p
[0] >= 3 && p
[2] == dsubtype
)
2052 * Wrapper for usb_control_msg().
2053 * Allocates a temp buffer to prevent dmaing from/to the stack.
2055 int snd_usb_ctl_msg(struct usb_device
*dev
, unsigned int pipe
, __u8 request
,
2056 __u8 requesttype
, __u16 value
, __u16 index
, void *data
,
2057 __u16 size
, int timeout
)
2063 buf
= kmemdup(data
, size
, GFP_KERNEL
);
2067 err
= usb_control_msg(dev
, pipe
, request
, requesttype
,
2068 value
, index
, buf
, size
, timeout
);
2070 memcpy(data
, buf
, size
);
2078 * entry point for linux usb interface
2081 static int usb_audio_probe(struct usb_interface
*intf
,
2082 const struct usb_device_id
*id
);
2083 static void usb_audio_disconnect(struct usb_interface
*intf
);
2085 static struct usb_device_id usb_audio_ids
[] = {
2086 #include "usbquirks.h"
2087 { .match_flags
= (USB_DEVICE_ID_MATCH_INT_CLASS
| USB_DEVICE_ID_MATCH_INT_SUBCLASS
),
2088 .bInterfaceClass
= USB_CLASS_AUDIO
,
2089 .bInterfaceSubClass
= USB_SUBCLASS_AUDIO_CONTROL
},
2090 { } /* Terminating entry */
2093 MODULE_DEVICE_TABLE (usb
, usb_audio_ids
);
2095 static struct usb_driver usb_audio_driver
= {
2096 .name
= "snd-usb-audio",
2097 .probe
= usb_audio_probe
,
2098 .disconnect
= usb_audio_disconnect
,
2099 .id_table
= usb_audio_ids
,
2103 #if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS)
2106 * proc interface for list the supported pcm formats
2108 static void proc_dump_substream_formats(struct snd_usb_substream
*subs
, struct snd_info_buffer
*buffer
)
2110 struct list_head
*p
;
2111 static char *sync_types
[4] = {
2112 "NONE", "ASYNC", "ADAPTIVE", "SYNC"
2115 list_for_each(p
, &subs
->fmt_list
) {
2116 struct audioformat
*fp
;
2117 fp
= list_entry(p
, struct audioformat
, list
);
2118 snd_iprintf(buffer
, " Interface %d\n", fp
->iface
);
2119 snd_iprintf(buffer
, " Altset %d\n", fp
->altsetting
);
2120 snd_iprintf(buffer
, " Format: 0x%x\n", fp
->format
);
2121 snd_iprintf(buffer
, " Channels: %d\n", fp
->channels
);
2122 snd_iprintf(buffer
, " Endpoint: %d %s (%s)\n",
2123 fp
->endpoint
& USB_ENDPOINT_NUMBER_MASK
,
2124 fp
->endpoint
& USB_DIR_IN
? "IN" : "OUT",
2125 sync_types
[(fp
->ep_attr
& EP_ATTR_MASK
) >> 2]);
2126 if (fp
->rates
& SNDRV_PCM_RATE_CONTINUOUS
) {
2127 snd_iprintf(buffer
, " Rates: %d - %d (continuous)\n",
2128 fp
->rate_min
, fp
->rate_max
);
2131 snd_iprintf(buffer
, " Rates: ");
2132 for (i
= 0; i
< fp
->nr_rates
; i
++) {
2134 snd_iprintf(buffer
, ", ");
2135 snd_iprintf(buffer
, "%d", fp
->rate_table
[i
]);
2137 snd_iprintf(buffer
, "\n");
2139 // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
2140 // snd_iprintf(buffer, " EP Attribute = 0x%x\n", fp->attributes);
2144 static void proc_dump_substream_status(struct snd_usb_substream
*subs
, struct snd_info_buffer
*buffer
)
2146 if (subs
->running
) {
2148 snd_iprintf(buffer
, " Status: Running\n");
2149 snd_iprintf(buffer
, " Interface = %d\n", subs
->interface
);
2150 snd_iprintf(buffer
, " Altset = %d\n", subs
->format
);
2151 snd_iprintf(buffer
, " URBs = %d [ ", subs
->nurbs
);
2152 for (i
= 0; i
< subs
->nurbs
; i
++)
2153 snd_iprintf(buffer
, "%d ", subs
->dataurb
[i
].packets
);
2154 snd_iprintf(buffer
, "]\n");
2155 snd_iprintf(buffer
, " Packet Size = %d\n", subs
->curpacksize
);
2156 snd_iprintf(buffer
, " Momentary freq = %u Hz (%#x.%04x)\n",
2157 snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
2158 ? get_full_speed_hz(subs
->freqm
)
2159 : get_high_speed_hz(subs
->freqm
),
2160 subs
->freqm
>> 16, subs
->freqm
& 0xffff);
2162 snd_iprintf(buffer
, " Status: Stop\n");
2166 static void proc_pcm_format_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
2168 struct snd_usb_stream
*stream
= entry
->private_data
;
2170 snd_iprintf(buffer
, "%s : %s\n", stream
->chip
->card
->longname
, stream
->pcm
->name
);
2172 if (stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
].num_formats
) {
2173 snd_iprintf(buffer
, "\nPlayback:\n");
2174 proc_dump_substream_status(&stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
], buffer
);
2175 proc_dump_substream_formats(&stream
->substream
[SNDRV_PCM_STREAM_PLAYBACK
], buffer
);
2177 if (stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
].num_formats
) {
2178 snd_iprintf(buffer
, "\nCapture:\n");
2179 proc_dump_substream_status(&stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
], buffer
);
2180 proc_dump_substream_formats(&stream
->substream
[SNDRV_PCM_STREAM_CAPTURE
], buffer
);
2184 static void proc_pcm_format_add(struct snd_usb_stream
*stream
)
2186 struct snd_info_entry
*entry
;
2188 struct snd_card
*card
= stream
->chip
->card
;
2190 sprintf(name
, "stream%d", stream
->pcm_index
);
2191 if (! snd_card_proc_new(card
, name
, &entry
))
2192 snd_info_set_text_ops(entry
, stream
, proc_pcm_format_read
);
2197 static inline void proc_pcm_format_add(struct snd_usb_stream
*stream
)
2204 * initialize the substream instance.
2207 static void init_substream(struct snd_usb_stream
*as
, int stream
, struct audioformat
*fp
)
2209 struct snd_usb_substream
*subs
= &as
->substream
[stream
];
2211 INIT_LIST_HEAD(&subs
->fmt_list
);
2212 spin_lock_init(&subs
->lock
);
2215 subs
->direction
= stream
;
2216 subs
->dev
= as
->chip
->dev
;
2217 if (snd_usb_get_speed(subs
->dev
) == USB_SPEED_FULL
)
2218 subs
->ops
= audio_urb_ops
[stream
];
2220 subs
->ops
= audio_urb_ops_high_speed
[stream
];
2221 snd_pcm_set_ops(as
->pcm
, stream
,
2222 stream
== SNDRV_PCM_STREAM_PLAYBACK
?
2223 &snd_usb_playback_ops
: &snd_usb_capture_ops
);
2225 list_add_tail(&fp
->list
, &subs
->fmt_list
);
2226 subs
->formats
|= 1ULL << fp
->format
;
2227 subs
->endpoint
= fp
->endpoint
;
2228 subs
->num_formats
++;
2229 subs
->fmt_type
= fp
->fmt_type
;
2236 static void free_substream(struct snd_usb_substream
*subs
)
2238 struct list_head
*p
, *n
;
2240 if (! subs
->num_formats
)
2241 return; /* not initialized */
2242 list_for_each_safe(p
, n
, &subs
->fmt_list
) {
2243 struct audioformat
*fp
= list_entry(p
, struct audioformat
, list
);
2244 kfree(fp
->rate_table
);
2247 kfree(subs
->rate_list
.list
);
2252 * free a usb stream instance
2254 static void snd_usb_audio_stream_free(struct snd_usb_stream
*stream
)
2256 free_substream(&stream
->substream
[0]);
2257 free_substream(&stream
->substream
[1]);
2258 list_del(&stream
->list
);
2262 static void snd_usb_audio_pcm_free(struct snd_pcm
*pcm
)
2264 struct snd_usb_stream
*stream
= pcm
->private_data
;
2267 snd_usb_audio_stream_free(stream
);
2273 * add this endpoint to the chip instance.
2274 * if a stream with the same endpoint already exists, append to it.
2275 * if not, create a new pcm stream.
2277 static int add_audio_endpoint(struct snd_usb_audio
*chip
, int stream
, struct audioformat
*fp
)
2279 struct list_head
*p
;
2280 struct snd_usb_stream
*as
;
2281 struct snd_usb_substream
*subs
;
2282 struct snd_pcm
*pcm
;
2285 list_for_each(p
, &chip
->pcm_list
) {
2286 as
= list_entry(p
, struct snd_usb_stream
, list
);
2287 if (as
->fmt_type
!= fp
->fmt_type
)
2289 subs
= &as
->substream
[stream
];
2290 if (! subs
->endpoint
)
2292 if (subs
->endpoint
== fp
->endpoint
) {
2293 list_add_tail(&fp
->list
, &subs
->fmt_list
);
2294 subs
->num_formats
++;
2295 subs
->formats
|= 1ULL << fp
->format
;
2299 /* look for an empty stream */
2300 list_for_each(p
, &chip
->pcm_list
) {
2301 as
= list_entry(p
, struct snd_usb_stream
, list
);
2302 if (as
->fmt_type
!= fp
->fmt_type
)
2304 subs
= &as
->substream
[stream
];
2307 err
= snd_pcm_new_stream(as
->pcm
, stream
, 1);
2310 init_substream(as
, stream
, fp
);
2314 /* create a new pcm */
2315 as
= kzalloc(sizeof(*as
), GFP_KERNEL
);
2318 as
->pcm_index
= chip
->pcm_devs
;
2320 as
->fmt_type
= fp
->fmt_type
;
2321 err
= snd_pcm_new(chip
->card
, "USB Audio", chip
->pcm_devs
,
2322 stream
== SNDRV_PCM_STREAM_PLAYBACK
? 1 : 0,
2323 stream
== SNDRV_PCM_STREAM_PLAYBACK
? 0 : 1,
2330 pcm
->private_data
= as
;
2331 pcm
->private_free
= snd_usb_audio_pcm_free
;
2332 pcm
->info_flags
= 0;
2333 if (chip
->pcm_devs
> 0)
2334 sprintf(pcm
->name
, "USB Audio #%d", chip
->pcm_devs
);
2336 strcpy(pcm
->name
, "USB Audio");
2338 init_substream(as
, stream
, fp
);
2340 list_add(&as
->list
, &chip
->pcm_list
);
2343 proc_pcm_format_add(as
);
2350 * check if the device uses big-endian samples
2352 static int is_big_endian_format(struct snd_usb_audio
*chip
, struct audioformat
*fp
)
2354 switch (chip
->usb_id
) {
2355 case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
2356 if (fp
->endpoint
& USB_DIR_IN
)
2359 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2366 * parse the audio format type I descriptor
2367 * and returns the corresponding pcm format
2370 * @fp: audioformat record
2371 * @format: the format tag (wFormatTag)
2372 * @fmt: the format type descriptor
2374 static int parse_audio_format_i_type(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2375 int format
, unsigned char *fmt
)
2378 int sample_width
, sample_bytes
;
2380 /* FIXME: correct endianess and sign? */
2382 sample_width
= fmt
[6];
2383 sample_bytes
= fmt
[5];
2385 case 0: /* some devices don't define this correctly... */
2386 snd_printdd(KERN_INFO
"%d:%u:%d : format type 0 is detected, processed as PCM\n",
2387 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
);
2389 case USB_AUDIO_FORMAT_PCM
:
2390 if (sample_width
> sample_bytes
* 8) {
2391 snd_printk(KERN_INFO
"%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
2392 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
,
2393 sample_width
, sample_bytes
);
2395 /* check the format byte size */
2398 pcm_format
= SNDRV_PCM_FORMAT_S8
;
2401 if (is_big_endian_format(chip
, fp
))
2402 pcm_format
= SNDRV_PCM_FORMAT_S16_BE
; /* grrr, big endian!! */
2404 pcm_format
= SNDRV_PCM_FORMAT_S16_LE
;
2407 if (is_big_endian_format(chip
, fp
))
2408 pcm_format
= SNDRV_PCM_FORMAT_S24_3BE
; /* grrr, big endian!! */
2410 pcm_format
= SNDRV_PCM_FORMAT_S24_3LE
;
2413 pcm_format
= SNDRV_PCM_FORMAT_S32_LE
;
2416 snd_printk(KERN_INFO
"%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
2417 chip
->dev
->devnum
, fp
->iface
,
2418 fp
->altsetting
, sample_width
, sample_bytes
);
2422 case USB_AUDIO_FORMAT_PCM8
:
2423 /* Dallas DS4201 workaround */
2424 if (chip
->usb_id
== USB_ID(0x04fa, 0x4201))
2425 pcm_format
= SNDRV_PCM_FORMAT_S8
;
2427 pcm_format
= SNDRV_PCM_FORMAT_U8
;
2429 case USB_AUDIO_FORMAT_IEEE_FLOAT
:
2430 pcm_format
= SNDRV_PCM_FORMAT_FLOAT_LE
;
2432 case USB_AUDIO_FORMAT_ALAW
:
2433 pcm_format
= SNDRV_PCM_FORMAT_A_LAW
;
2435 case USB_AUDIO_FORMAT_MU_LAW
:
2436 pcm_format
= SNDRV_PCM_FORMAT_MU_LAW
;
2439 snd_printk(KERN_INFO
"%d:%u:%d : unsupported format type %d\n",
2440 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, format
);
2448 * parse the format descriptor and stores the possible sample rates
2449 * on the audioformat table.
2452 * @fp: audioformat record
2453 * @fmt: the format descriptor
2454 * @offset: the start offset of descriptor pointing the rate type
2455 * (7 for type I and II, 8 for type II)
2457 static int parse_audio_format_rates(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2458 unsigned char *fmt
, int offset
)
2460 int nr_rates
= fmt
[offset
];
2462 if (fmt
[0] < offset
+ 1 + 3 * (nr_rates
? nr_rates
: 2)) {
2463 snd_printk(KERN_ERR
"%d:%u:%d : invalid FORMAT_TYPE desc\n",
2464 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
);
2470 * build the rate table and bitmap flags
2473 unsigned int nonzero_rates
= 0;
2474 /* this table corresponds to the SNDRV_PCM_RATE_XXX bit */
2475 static unsigned int conv_rates
[] = {
2476 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000,
2477 64000, 88200, 96000, 176400, 192000
2479 fp
->rate_table
= kmalloc(sizeof(int) * nr_rates
, GFP_KERNEL
);
2480 if (fp
->rate_table
== NULL
) {
2481 snd_printk(KERN_ERR
"cannot malloc\n");
2486 fp
->nr_rates
= nr_rates
;
2487 fp
->rate_min
= fp
->rate_max
= combine_triple(&fmt
[8]);
2488 for (r
= 0, idx
= offset
+ 1; r
< nr_rates
; r
++, idx
+= 3) {
2489 unsigned int rate
= combine_triple(&fmt
[idx
]);
2490 /* C-Media CM6501 mislabels its 96 kHz altsetting */
2491 if (rate
== 48000 && nr_rates
== 1 &&
2492 chip
->usb_id
== USB_ID(0x0d8c, 0x0201) &&
2493 fp
->altsetting
== 5 && fp
->maxpacksize
== 392)
2495 fp
->rate_table
[r
] = rate
;
2496 nonzero_rates
|= rate
;
2497 if (rate
< fp
->rate_min
)
2498 fp
->rate_min
= rate
;
2499 else if (rate
> fp
->rate_max
)
2500 fp
->rate_max
= rate
;
2502 for (c
= 0; c
< (int)ARRAY_SIZE(conv_rates
); c
++) {
2503 if (rate
== conv_rates
[c
]) {
2505 fp
->rates
|= (1 << c
);
2512 if (!nonzero_rates
) {
2513 hwc_debug("All rates were zero. Skipping format!\n");
2517 fp
->rates
|= SNDRV_PCM_RATE_KNOT
;
2519 /* continuous rates */
2520 fp
->rates
= SNDRV_PCM_RATE_CONTINUOUS
;
2521 fp
->rate_min
= combine_triple(&fmt
[offset
+ 1]);
2522 fp
->rate_max
= combine_triple(&fmt
[offset
+ 4]);
2528 * parse the format type I and III descriptors
2530 static int parse_audio_format_i(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2531 int format
, unsigned char *fmt
)
2535 if (fmt
[3] == USB_FORMAT_TYPE_III
) {
2536 /* FIXME: the format type is really IECxxx
2537 * but we give normal PCM format to get the existing
2540 pcm_format
= SNDRV_PCM_FORMAT_S16_LE
;
2542 pcm_format
= parse_audio_format_i_type(chip
, fp
, format
, fmt
);
2546 fp
->format
= pcm_format
;
2547 fp
->channels
= fmt
[4];
2548 if (fp
->channels
< 1) {
2549 snd_printk(KERN_ERR
"%d:%u:%d : invalid channels %d\n",
2550 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, fp
->channels
);
2553 return parse_audio_format_rates(chip
, fp
, fmt
, 7);
2557 * prase the format type II descriptor
2559 static int parse_audio_format_ii(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2560 int format
, unsigned char *fmt
)
2562 int brate
, framesize
;
2564 case USB_AUDIO_FORMAT_AC3
:
2565 /* FIXME: there is no AC3 format defined yet */
2566 // fp->format = SNDRV_PCM_FORMAT_AC3;
2567 fp
->format
= SNDRV_PCM_FORMAT_U8
; /* temporarily hack to receive byte streams */
2569 case USB_AUDIO_FORMAT_MPEG
:
2570 fp
->format
= SNDRV_PCM_FORMAT_MPEG
;
2573 snd_printd(KERN_INFO
"%d:%u:%d : unknown format tag 0x%x is detected. processed as MPEG.\n",
2574 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, format
);
2575 fp
->format
= SNDRV_PCM_FORMAT_MPEG
;
2579 brate
= combine_word(&fmt
[4]); /* fmt[4,5] : wMaxBitRate (in kbps) */
2580 framesize
= combine_word(&fmt
[6]); /* fmt[6,7]: wSamplesPerFrame */
2581 snd_printd(KERN_INFO
"found format II with max.bitrate = %d, frame size=%d\n", brate
, framesize
);
2582 fp
->frame_size
= framesize
;
2583 return parse_audio_format_rates(chip
, fp
, fmt
, 8); /* fmt[8..] sample rates */
2586 static int parse_audio_format(struct snd_usb_audio
*chip
, struct audioformat
*fp
,
2587 int format
, unsigned char *fmt
, int stream
)
2592 case USB_FORMAT_TYPE_I
:
2593 case USB_FORMAT_TYPE_III
:
2594 err
= parse_audio_format_i(chip
, fp
, format
, fmt
);
2596 case USB_FORMAT_TYPE_II
:
2597 err
= parse_audio_format_ii(chip
, fp
, format
, fmt
);
2600 snd_printd(KERN_INFO
"%d:%u:%d : format type %d is not supported yet\n",
2601 chip
->dev
->devnum
, fp
->iface
, fp
->altsetting
, fmt
[3]);
2604 fp
->fmt_type
= fmt
[3];
2608 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
2609 /* extigy apparently supports sample rates other than 48k
2610 * but not in ordinary way. so we enable only 48k atm.
2612 if (chip
->usb_id
== USB_ID(0x041e, 0x3000) ||
2613 chip
->usb_id
== USB_ID(0x041e, 0x3020) ||
2614 chip
->usb_id
== USB_ID(0x041e, 0x3061)) {
2615 if (fmt
[3] == USB_FORMAT_TYPE_I
&&
2616 fp
->rates
!= SNDRV_PCM_RATE_48000
&&
2617 fp
->rates
!= SNDRV_PCM_RATE_96000
)
2624 static int audiophile_skip_setting_quirk(struct snd_usb_audio
*chip
,
2625 int iface
, int altno
);
2626 static int parse_audio_endpoints(struct snd_usb_audio
*chip
, int iface_no
)
2628 struct usb_device
*dev
;
2629 struct usb_interface
*iface
;
2630 struct usb_host_interface
*alts
;
2631 struct usb_interface_descriptor
*altsd
;
2632 int i
, altno
, err
, stream
;
2634 struct audioformat
*fp
;
2635 unsigned char *fmt
, *csep
;
2639 /* parse the interface's altsettings */
2640 iface
= usb_ifnum_to_if(dev
, iface_no
);
2641 for (i
= 0; i
< iface
->num_altsetting
; i
++) {
2642 alts
= &iface
->altsetting
[i
];
2643 altsd
= get_iface_desc(alts
);
2644 /* skip invalid one */
2645 if ((altsd
->bInterfaceClass
!= USB_CLASS_AUDIO
&&
2646 altsd
->bInterfaceClass
!= USB_CLASS_VENDOR_SPEC
) ||
2647 (altsd
->bInterfaceSubClass
!= USB_SUBCLASS_AUDIO_STREAMING
&&
2648 altsd
->bInterfaceSubClass
!= USB_SUBCLASS_VENDOR_SPEC
) ||
2649 altsd
->bNumEndpoints
< 1 ||
2650 le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
) == 0)
2652 /* must be isochronous */
2653 if ((get_endpoint(alts
, 0)->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) !=
2654 USB_ENDPOINT_XFER_ISOC
)
2656 /* check direction */
2657 stream
= (get_endpoint(alts
, 0)->bEndpointAddress
& USB_DIR_IN
) ?
2658 SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
2659 altno
= altsd
->bAlternateSetting
;
2661 /* audiophile usb: skip altsets incompatible with device_setup
2663 if (chip
->usb_id
== USB_ID(0x0763, 0x2003) &&
2664 audiophile_skip_setting_quirk(chip
, iface_no
, altno
))
2667 /* get audio formats */
2668 fmt
= snd_usb_find_csint_desc(alts
->extra
, alts
->extralen
, NULL
, AS_GENERAL
);
2670 snd_printk(KERN_ERR
"%d:%u:%d : AS_GENERAL descriptor not found\n",
2671 dev
->devnum
, iface_no
, altno
);
2676 snd_printk(KERN_ERR
"%d:%u:%d : invalid AS_GENERAL desc\n",
2677 dev
->devnum
, iface_no
, altno
);
2681 format
= (fmt
[6] << 8) | fmt
[5]; /* remember the format value */
2683 /* get format type */
2684 fmt
= snd_usb_find_csint_desc(alts
->extra
, alts
->extralen
, NULL
, FORMAT_TYPE
);
2686 snd_printk(KERN_ERR
"%d:%u:%d : no FORMAT_TYPE desc\n",
2687 dev
->devnum
, iface_no
, altno
);
2691 snd_printk(KERN_ERR
"%d:%u:%d : invalid FORMAT_TYPE desc\n",
2692 dev
->devnum
, iface_no
, altno
);
2696 csep
= snd_usb_find_desc(alts
->endpoint
[0].extra
, alts
->endpoint
[0].extralen
, NULL
, USB_DT_CS_ENDPOINT
);
2697 /* Creamware Noah has this descriptor after the 2nd endpoint */
2698 if (!csep
&& altsd
->bNumEndpoints
>= 2)
2699 csep
= snd_usb_find_desc(alts
->endpoint
[1].extra
, alts
->endpoint
[1].extralen
, NULL
, USB_DT_CS_ENDPOINT
);
2700 if (!csep
|| csep
[0] < 7 || csep
[2] != EP_GENERAL
) {
2701 snd_printk(KERN_WARNING
"%d:%u:%d : no or invalid"
2702 " class specific endpoint descriptor\n",
2703 dev
->devnum
, iface_no
, altno
);
2707 fp
= kzalloc(sizeof(*fp
), GFP_KERNEL
);
2709 snd_printk(KERN_ERR
"cannot malloc\n");
2713 fp
->iface
= iface_no
;
2714 fp
->altsetting
= altno
;
2716 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
2717 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
2718 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
2719 if (snd_usb_get_speed(dev
) == USB_SPEED_HIGH
)
2720 fp
->maxpacksize
= (((fp
->maxpacksize
>> 11) & 3) + 1)
2721 * (fp
->maxpacksize
& 0x7ff);
2722 fp
->attributes
= csep
? csep
[3] : 0;
2724 /* some quirks for attributes here */
2726 switch (chip
->usb_id
) {
2727 case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
2728 /* Optoplay sets the sample rate attribute although
2729 * it seems not supporting it in fact.
2731 fp
->attributes
&= ~EP_CS_ATTR_SAMPLE_RATE
;
2733 case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
2734 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2735 /* doesn't set the sample rate attribute, but supports it */
2736 fp
->attributes
|= EP_CS_ATTR_SAMPLE_RATE
;
2738 case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
2739 case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
2740 an older model 77d:223) */
2742 * plantronics headset and Griffin iMic have set adaptive-in
2743 * although it's really not...
2745 fp
->ep_attr
&= ~EP_ATTR_MASK
;
2746 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
2747 fp
->ep_attr
|= EP_ATTR_ADAPTIVE
;
2749 fp
->ep_attr
|= EP_ATTR_SYNC
;
2753 /* ok, let's parse further... */
2754 if (parse_audio_format(chip
, fp
, format
, fmt
, stream
) < 0) {
2755 kfree(fp
->rate_table
);
2760 snd_printdd(KERN_INFO
"%d:%u:%d: add audio endpoint 0x%x\n", dev
->devnum
, iface_no
, altno
, fp
->endpoint
);
2761 err
= add_audio_endpoint(chip
, stream
, fp
);
2763 kfree(fp
->rate_table
);
2767 /* try to set the interface... */
2768 usb_set_interface(chip
->dev
, iface_no
, altno
);
2769 init_usb_pitch(chip
->dev
, iface_no
, alts
, fp
);
2770 init_usb_sample_rate(chip
->dev
, iface_no
, alts
, fp
, fp
->rate_max
);
2777 * disconnect streams
2778 * called from snd_usb_audio_disconnect()
2780 static void snd_usb_stream_disconnect(struct list_head
*head
)
2783 struct snd_usb_stream
*as
;
2784 struct snd_usb_substream
*subs
;
2786 as
= list_entry(head
, struct snd_usb_stream
, list
);
2787 for (idx
= 0; idx
< 2; idx
++) {
2788 subs
= &as
->substream
[idx
];
2789 if (!subs
->num_formats
)
2791 release_substream_urbs(subs
, 1);
2792 subs
->interface
= -1;
2797 * parse audio control descriptor and create pcm/midi streams
2799 static int snd_usb_create_streams(struct snd_usb_audio
*chip
, int ctrlif
)
2801 struct usb_device
*dev
= chip
->dev
;
2802 struct usb_host_interface
*host_iface
;
2803 struct usb_interface
*iface
;
2807 /* find audiocontrol interface */
2808 host_iface
= &usb_ifnum_to_if(dev
, ctrlif
)->altsetting
[0];
2809 if (!(p1
= snd_usb_find_csint_desc(host_iface
->extra
, host_iface
->extralen
, NULL
, HEADER
))) {
2810 snd_printk(KERN_ERR
"cannot find HEADER\n");
2813 if (! p1
[7] || p1
[0] < 8 + p1
[7]) {
2814 snd_printk(KERN_ERR
"invalid HEADER\n");
2819 * parse all USB audio streaming interfaces
2821 for (i
= 0; i
< p1
[7]; i
++) {
2822 struct usb_host_interface
*alts
;
2823 struct usb_interface_descriptor
*altsd
;
2825 iface
= usb_ifnum_to_if(dev
, j
);
2827 snd_printk(KERN_ERR
"%d:%u:%d : does not exist\n",
2828 dev
->devnum
, ctrlif
, j
);
2831 if (usb_interface_claimed(iface
)) {
2832 snd_printdd(KERN_INFO
"%d:%d:%d: skipping, already claimed\n", dev
->devnum
, ctrlif
, j
);
2835 alts
= &iface
->altsetting
[0];
2836 altsd
= get_iface_desc(alts
);
2837 if ((altsd
->bInterfaceClass
== USB_CLASS_AUDIO
||
2838 altsd
->bInterfaceClass
== USB_CLASS_VENDOR_SPEC
) &&
2839 altsd
->bInterfaceSubClass
== USB_SUBCLASS_MIDI_STREAMING
) {
2840 if (snd_usb_create_midi_interface(chip
, iface
, NULL
) < 0) {
2841 snd_printk(KERN_ERR
"%d:%u:%d: cannot create sequencer device\n", dev
->devnum
, ctrlif
, j
);
2844 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
2847 if ((altsd
->bInterfaceClass
!= USB_CLASS_AUDIO
&&
2848 altsd
->bInterfaceClass
!= USB_CLASS_VENDOR_SPEC
) ||
2849 altsd
->bInterfaceSubClass
!= USB_SUBCLASS_AUDIO_STREAMING
) {
2850 snd_printdd(KERN_ERR
"%d:%u:%d: skipping non-supported interface %d\n", dev
->devnum
, ctrlif
, j
, altsd
->bInterfaceClass
);
2851 /* skip non-supported classes */
2854 if (! parse_audio_endpoints(chip
, j
)) {
2855 usb_set_interface(dev
, j
, 0); /* reset the current interface */
2856 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
2864 * create a stream for an endpoint/altsetting without proper descriptors
2866 static int create_fixed_stream_quirk(struct snd_usb_audio
*chip
,
2867 struct usb_interface
*iface
,
2868 const struct snd_usb_audio_quirk
*quirk
)
2870 struct audioformat
*fp
;
2871 struct usb_host_interface
*alts
;
2873 int *rate_table
= NULL
;
2875 fp
= kmemdup(quirk
->data
, sizeof(*fp
), GFP_KERNEL
);
2877 snd_printk(KERN_ERR
"cannot memdup\n");
2880 if (fp
->nr_rates
> 0) {
2881 rate_table
= kmalloc(sizeof(int) * fp
->nr_rates
, GFP_KERNEL
);
2886 memcpy(rate_table
, fp
->rate_table
, sizeof(int) * fp
->nr_rates
);
2887 fp
->rate_table
= rate_table
;
2890 stream
= (fp
->endpoint
& USB_DIR_IN
)
2891 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
2892 err
= add_audio_endpoint(chip
, stream
, fp
);
2898 if (fp
->iface
!= get_iface_desc(&iface
->altsetting
[0])->bInterfaceNumber
||
2899 fp
->altset_idx
>= iface
->num_altsetting
) {
2904 alts
= &iface
->altsetting
[fp
->altset_idx
];
2905 usb_set_interface(chip
->dev
, fp
->iface
, 0);
2906 init_usb_pitch(chip
->dev
, fp
->iface
, alts
, fp
);
2907 init_usb_sample_rate(chip
->dev
, fp
->iface
, alts
, fp
, fp
->rate_max
);
2912 * create a stream for an interface with proper descriptors
2914 static int create_standard_audio_quirk(struct snd_usb_audio
*chip
,
2915 struct usb_interface
*iface
,
2916 const struct snd_usb_audio_quirk
*quirk
)
2918 struct usb_host_interface
*alts
;
2919 struct usb_interface_descriptor
*altsd
;
2922 alts
= &iface
->altsetting
[0];
2923 altsd
= get_iface_desc(alts
);
2924 err
= parse_audio_endpoints(chip
, altsd
->bInterfaceNumber
);
2926 snd_printk(KERN_ERR
"cannot setup if %d: error %d\n",
2927 altsd
->bInterfaceNumber
, err
);
2930 /* reset the current interface */
2931 usb_set_interface(chip
->dev
, altsd
->bInterfaceNumber
, 0);
2936 * Create a stream for an Edirol UA-700/UA-25 interface. The only way
2937 * to detect the sample rate is by looking at wMaxPacketSize.
2939 static int create_ua700_ua25_quirk(struct snd_usb_audio
*chip
,
2940 struct usb_interface
*iface
,
2941 const struct snd_usb_audio_quirk
*quirk
)
2943 static const struct audioformat ua_format
= {
2944 .format
= SNDRV_PCM_FORMAT_S24_3LE
,
2946 .fmt_type
= USB_FORMAT_TYPE_I
,
2949 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
2951 struct usb_host_interface
*alts
;
2952 struct usb_interface_descriptor
*altsd
;
2953 struct audioformat
*fp
;
2956 /* both PCM and MIDI interfaces have 2 altsettings */
2957 if (iface
->num_altsetting
!= 2)
2959 alts
= &iface
->altsetting
[1];
2960 altsd
= get_iface_desc(alts
);
2962 if (altsd
->bNumEndpoints
== 2) {
2963 static const struct snd_usb_midi_endpoint_info ua700_ep
= {
2964 .out_cables
= 0x0003,
2967 static const struct snd_usb_audio_quirk ua700_quirk
= {
2968 .type
= QUIRK_MIDI_FIXED_ENDPOINT
,
2971 static const struct snd_usb_midi_endpoint_info ua25_ep
= {
2972 .out_cables
= 0x0001,
2975 static const struct snd_usb_audio_quirk ua25_quirk
= {
2976 .type
= QUIRK_MIDI_FIXED_ENDPOINT
,
2979 if (chip
->usb_id
== USB_ID(0x0582, 0x002b))
2980 return snd_usb_create_midi_interface(chip
, iface
,
2983 return snd_usb_create_midi_interface(chip
, iface
,
2987 if (altsd
->bNumEndpoints
!= 1)
2990 fp
= kmalloc(sizeof(*fp
), GFP_KERNEL
);
2993 memcpy(fp
, &ua_format
, sizeof(*fp
));
2995 fp
->iface
= altsd
->bInterfaceNumber
;
2996 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
2997 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
2998 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
3000 switch (fp
->maxpacksize
) {
3002 fp
->rate_max
= fp
->rate_min
= 44100;
3006 fp
->rate_max
= fp
->rate_min
= 48000;
3010 fp
->rate_max
= fp
->rate_min
= 96000;
3013 snd_printk(KERN_ERR
"unknown sample rate\n");
3018 stream
= (fp
->endpoint
& USB_DIR_IN
)
3019 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3020 err
= add_audio_endpoint(chip
, stream
, fp
);
3025 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3030 * Create a stream for an Edirol UA-1000 interface.
3032 static int create_ua1000_quirk(struct snd_usb_audio
*chip
,
3033 struct usb_interface
*iface
,
3034 const struct snd_usb_audio_quirk
*quirk
)
3036 static const struct audioformat ua1000_format
= {
3037 .format
= SNDRV_PCM_FORMAT_S32_LE
,
3038 .fmt_type
= USB_FORMAT_TYPE_I
,
3042 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
3044 struct usb_host_interface
*alts
;
3045 struct usb_interface_descriptor
*altsd
;
3046 struct audioformat
*fp
;
3049 if (iface
->num_altsetting
!= 2)
3051 alts
= &iface
->altsetting
[1];
3052 altsd
= get_iface_desc(alts
);
3053 if (alts
->extralen
!= 11 || alts
->extra
[1] != USB_DT_CS_INTERFACE
||
3054 altsd
->bNumEndpoints
!= 1)
3057 fp
= kmemdup(&ua1000_format
, sizeof(*fp
), GFP_KERNEL
);
3061 fp
->channels
= alts
->extra
[4];
3062 fp
->iface
= altsd
->bInterfaceNumber
;
3063 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
3064 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
3065 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
3066 fp
->rate_max
= fp
->rate_min
= combine_triple(&alts
->extra
[8]);
3068 stream
= (fp
->endpoint
& USB_DIR_IN
)
3069 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3070 err
= add_audio_endpoint(chip
, stream
, fp
);
3075 /* FIXME: playback must be synchronized to capture */
3076 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3081 * Create a stream for an Edirol UA-101 interface.
3082 * Copy, paste and modify from Edirol UA-1000
3084 static int create_ua101_quirk(struct snd_usb_audio
*chip
,
3085 struct usb_interface
*iface
,
3086 const struct snd_usb_audio_quirk
*quirk
)
3088 static const struct audioformat ua101_format
= {
3089 .format
= SNDRV_PCM_FORMAT_S32_LE
,
3090 .fmt_type
= USB_FORMAT_TYPE_I
,
3094 .rates
= SNDRV_PCM_RATE_CONTINUOUS
,
3096 struct usb_host_interface
*alts
;
3097 struct usb_interface_descriptor
*altsd
;
3098 struct audioformat
*fp
;
3101 if (iface
->num_altsetting
!= 2)
3103 alts
= &iface
->altsetting
[1];
3104 altsd
= get_iface_desc(alts
);
3105 if (alts
->extralen
!= 18 || alts
->extra
[1] != USB_DT_CS_INTERFACE
||
3106 altsd
->bNumEndpoints
!= 1)
3109 fp
= kmemdup(&ua101_format
, sizeof(*fp
), GFP_KERNEL
);
3113 fp
->channels
= alts
->extra
[11];
3114 fp
->iface
= altsd
->bInterfaceNumber
;
3115 fp
->endpoint
= get_endpoint(alts
, 0)->bEndpointAddress
;
3116 fp
->ep_attr
= get_endpoint(alts
, 0)->bmAttributes
;
3117 fp
->maxpacksize
= le16_to_cpu(get_endpoint(alts
, 0)->wMaxPacketSize
);
3118 fp
->rate_max
= fp
->rate_min
= combine_triple(&alts
->extra
[15]);
3120 stream
= (fp
->endpoint
& USB_DIR_IN
)
3121 ? SNDRV_PCM_STREAM_CAPTURE
: SNDRV_PCM_STREAM_PLAYBACK
;
3122 err
= add_audio_endpoint(chip
, stream
, fp
);
3127 /* FIXME: playback must be synchronized to capture */
3128 usb_set_interface(chip
->dev
, fp
->iface
, 0);
3132 static int snd_usb_create_quirk(struct snd_usb_audio
*chip
,
3133 struct usb_interface
*iface
,
3134 const struct snd_usb_audio_quirk
*quirk
);
3137 * handle the quirks for the contained interfaces
3139 static int create_composite_quirk(struct snd_usb_audio
*chip
,
3140 struct usb_interface
*iface
,
3141 const struct snd_usb_audio_quirk
*quirk
)
3143 int probed_ifnum
= get_iface_desc(iface
->altsetting
)->bInterfaceNumber
;
3146 for (quirk
= quirk
->data
; quirk
->ifnum
>= 0; ++quirk
) {
3147 iface
= usb_ifnum_to_if(chip
->dev
, quirk
->ifnum
);
3150 if (quirk
->ifnum
!= probed_ifnum
&&
3151 usb_interface_claimed(iface
))
3153 err
= snd_usb_create_quirk(chip
, iface
, quirk
);
3156 if (quirk
->ifnum
!= probed_ifnum
)
3157 usb_driver_claim_interface(&usb_audio_driver
, iface
, (void *)-1L);
3162 static int ignore_interface_quirk(struct snd_usb_audio
*chip
,
3163 struct usb_interface
*iface
,
3164 const struct snd_usb_audio_quirk
*quirk
)
3174 #define EXTIGY_FIRMWARE_SIZE_OLD 794
3175 #define EXTIGY_FIRMWARE_SIZE_NEW 483
3177 static int snd_usb_extigy_boot_quirk(struct usb_device
*dev
, struct usb_interface
*intf
)
3179 struct usb_host_config
*config
= dev
->actconfig
;
3182 if (le16_to_cpu(get_cfg_desc(config
)->wTotalLength
) == EXTIGY_FIRMWARE_SIZE_OLD
||
3183 le16_to_cpu(get_cfg_desc(config
)->wTotalLength
) == EXTIGY_FIRMWARE_SIZE_NEW
) {
3184 snd_printdd("sending Extigy boot sequence...\n");
3185 /* Send message to force it to reconnect with full interface. */
3186 err
= snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
,0),
3187 0x10, 0x43, 0x0001, 0x000a, NULL
, 0, 1000);
3188 if (err
< 0) snd_printdd("error sending boot message: %d\n", err
);
3189 err
= usb_get_descriptor(dev
, USB_DT_DEVICE
, 0,
3190 &dev
->descriptor
, sizeof(dev
->descriptor
));
3191 config
= dev
->actconfig
;
3192 if (err
< 0) snd_printdd("error usb_get_descriptor: %d\n", err
);
3193 err
= usb_reset_configuration(dev
);
3194 if (err
< 0) snd_printdd("error usb_reset_configuration: %d\n", err
);
3195 snd_printdd("extigy_boot: new boot length = %d\n",
3196 le16_to_cpu(get_cfg_desc(config
)->wTotalLength
));
3197 return -ENODEV
; /* quit this anyway */
3202 static int snd_usb_audigy2nx_boot_quirk(struct usb_device
*dev
)
3206 snd_usb_ctl_msg(dev
, usb_rcvctrlpipe(dev
, 0), 0x2a,
3207 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
3208 0, 0, &buf
, 1, 1000);
3210 snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), 0x29,
3211 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
3212 1, 2000, NULL
, 0, 1000);
3219 * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
3220 * documented in the device's data sheet.
3222 static int snd_usb_cm106_write_int_reg(struct usb_device
*dev
, int reg
, u16 value
)
3226 buf
[1] = value
& 0xff;
3227 buf
[2] = (value
>> 8) & 0xff;
3229 return snd_usb_ctl_msg(dev
, usb_sndctrlpipe(dev
, 0), USB_REQ_SET_CONFIGURATION
,
3230 USB_DIR_OUT
| USB_TYPE_CLASS
| USB_RECIP_ENDPOINT
,
3231 0, 0, &buf
, 4, 1000);
3234 static int snd_usb_cm106_boot_quirk(struct usb_device
*dev
)
3237 * Enable line-out driver mode, set headphone source to front
3238 * channels, enable stereo mic.
3240 return snd_usb_cm106_write_int_reg(dev
, 2, 0x8004);
3247 #define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
3248 #define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
3249 #define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
3250 #define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
3251 #define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
3252 #define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
3253 #define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
3254 #define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
3255 #define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
3256 #define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
3258 static int audiophile_skip_setting_quirk(struct snd_usb_audio
*chip
,
3259 int iface
, int altno
)
3261 if (device_setup
[chip
->index
] & AUDIOPHILE_SET
) {
3262 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_DTS
)
3264 return 1; /* skip this altsetting */
3265 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_96K
)
3267 return 1; /* skip this altsetting */
3268 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3269 AUDIOPHILE_SET_24B_48K_DI
&& altno
!= 2)
3270 return 1; /* skip this altsetting */
3271 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3272 AUDIOPHILE_SET_24B_48K_NOTDI
&& altno
!= 3)
3273 return 1; /* skip this altsetting */
3274 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3275 AUDIOPHILE_SET_16B_48K_DI
&& altno
!= 4)
3276 return 1; /* skip this altsetting */
3277 if ((device_setup
[chip
->index
] & AUDIOPHILE_SET_MASK
) ==
3278 AUDIOPHILE_SET_16B_48K_NOTDI
&& altno
!= 5)
3279 return 1; /* skip this altsetting */
3281 return 0; /* keep this altsetting */
3285 * audio-interface quirks
3287 * returns zero if no standard audio/MIDI parsing is needed.
3288 * returns a postive value if standard audio/midi interfaces are parsed
3290 * returns a negative value at error.
3292 static int snd_usb_create_quirk(struct snd_usb_audio
*chip
,
3293 struct usb_interface
*iface
,
3294 const struct snd_usb_audio_quirk
*quirk
)
3296 typedef int (*quirk_func_t
)(struct snd_usb_audio
*, struct usb_interface
*,
3297 const struct snd_usb_audio_quirk
*);
3298 static const quirk_func_t quirk_funcs
[] = {
3299 [QUIRK_IGNORE_INTERFACE
] = ignore_interface_quirk
,
3300 [QUIRK_COMPOSITE
] = create_composite_quirk
,
3301 [QUIRK_MIDI_STANDARD_INTERFACE
] = snd_usb_create_midi_interface
,
3302 [QUIRK_MIDI_FIXED_ENDPOINT
] = snd_usb_create_midi_interface
,
3303 [QUIRK_MIDI_YAMAHA
] = snd_usb_create_midi_interface
,
3304 [QUIRK_MIDI_MIDIMAN
] = snd_usb_create_midi_interface
,
3305 [QUIRK_MIDI_NOVATION
] = snd_usb_create_midi_interface
,
3306 [QUIRK_MIDI_RAW
] = snd_usb_create_midi_interface
,
3307 [QUIRK_MIDI_EMAGIC
] = snd_usb_create_midi_interface
,
3308 [QUIRK_MIDI_CME
] = snd_usb_create_midi_interface
,
3309 [QUIRK_AUDIO_STANDARD_INTERFACE
] = create_standard_audio_quirk
,
3310 [QUIRK_AUDIO_FIXED_ENDPOINT
] = create_fixed_stream_quirk
,
3311 [QUIRK_AUDIO_EDIROL_UA700_UA25
] = create_ua700_ua25_quirk
,
3312 [QUIRK_AUDIO_EDIROL_UA1000
] = create_ua1000_quirk
,
3313 [QUIRK_AUDIO_EDIROL_UA101
] = create_ua101_quirk
,
3316 if (quirk
->type
< QUIRK_TYPE_COUNT
) {
3317 return quirk_funcs
[quirk
->type
](chip
, iface
, quirk
);
3319 snd_printd(KERN_ERR
"invalid quirk type %d\n", quirk
->type
);
3326 * common proc files to show the usb device info
3328 static void proc_audio_usbbus_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
3330 struct snd_usb_audio
*chip
= entry
->private_data
;
3331 if (! chip
->shutdown
)
3332 snd_iprintf(buffer
, "%03d/%03d\n", chip
->dev
->bus
->busnum
, chip
->dev
->devnum
);
3335 static void proc_audio_usbid_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
3337 struct snd_usb_audio
*chip
= entry
->private_data
;
3338 if (! chip
->shutdown
)
3339 snd_iprintf(buffer
, "%04x:%04x\n",
3340 USB_ID_VENDOR(chip
->usb_id
),
3341 USB_ID_PRODUCT(chip
->usb_id
));
3344 static void snd_usb_audio_create_proc(struct snd_usb_audio
*chip
)
3346 struct snd_info_entry
*entry
;
3347 if (! snd_card_proc_new(chip
->card
, "usbbus", &entry
))
3348 snd_info_set_text_ops(entry
, chip
, proc_audio_usbbus_read
);
3349 if (! snd_card_proc_new(chip
->card
, "usbid", &entry
))
3350 snd_info_set_text_ops(entry
, chip
, proc_audio_usbid_read
);
3354 * free the chip instance
3356 * here we have to do not much, since pcm and controls are already freed
3360 static int snd_usb_audio_free(struct snd_usb_audio
*chip
)
3362 usb_chip
[chip
->index
] = NULL
;
3367 static int snd_usb_audio_dev_free(struct snd_device
*device
)
3369 struct snd_usb_audio
*chip
= device
->device_data
;
3370 return snd_usb_audio_free(chip
);
3375 * create a chip instance and set its names.
3377 static int snd_usb_audio_create(struct usb_device
*dev
, int idx
,
3378 const struct snd_usb_audio_quirk
*quirk
,
3379 struct snd_usb_audio
**rchip
)
3381 struct snd_card
*card
;
3382 struct snd_usb_audio
*chip
;
3385 static struct snd_device_ops ops
= {
3386 .dev_free
= snd_usb_audio_dev_free
,
3391 if (snd_usb_get_speed(dev
) != USB_SPEED_FULL
&&
3392 snd_usb_get_speed(dev
) != USB_SPEED_HIGH
) {
3393 snd_printk(KERN_ERR
"unknown device speed %d\n", snd_usb_get_speed(dev
));
3397 card
= snd_card_new(index
[idx
], id
[idx
], THIS_MODULE
, 0);
3399 snd_printk(KERN_ERR
"cannot create card instance %d\n", idx
);
3403 chip
= kzalloc(sizeof(*chip
), GFP_KERNEL
);
3405 snd_card_free(card
);
3412 chip
->usb_id
= USB_ID(le16_to_cpu(dev
->descriptor
.idVendor
),
3413 le16_to_cpu(dev
->descriptor
.idProduct
));
3414 INIT_LIST_HEAD(&chip
->pcm_list
);
3415 INIT_LIST_HEAD(&chip
->midi_list
);
3416 INIT_LIST_HEAD(&chip
->mixer_list
);
3418 if ((err
= snd_device_new(card
, SNDRV_DEV_LOWLEVEL
, chip
, &ops
)) < 0) {
3419 snd_usb_audio_free(chip
);
3420 snd_card_free(card
);
3424 strcpy(card
->driver
, "USB-Audio");
3425 sprintf(component
, "USB%04x:%04x",
3426 USB_ID_VENDOR(chip
->usb_id
), USB_ID_PRODUCT(chip
->usb_id
));
3427 snd_component_add(card
, component
);
3429 /* retrieve the device string as shortname */
3430 if (quirk
&& quirk
->product_name
) {
3431 strlcpy(card
->shortname
, quirk
->product_name
, sizeof(card
->shortname
));
3433 if (!dev
->descriptor
.iProduct
||
3434 usb_string(dev
, dev
->descriptor
.iProduct
,
3435 card
->shortname
, sizeof(card
->shortname
)) <= 0) {
3436 /* no name available from anywhere, so use ID */
3437 sprintf(card
->shortname
, "USB Device %#04x:%#04x",
3438 USB_ID_VENDOR(chip
->usb_id
),
3439 USB_ID_PRODUCT(chip
->usb_id
));
3443 /* retrieve the vendor and device strings as longname */
3444 if (quirk
&& quirk
->vendor_name
) {
3445 len
= strlcpy(card
->longname
, quirk
->vendor_name
, sizeof(card
->longname
));
3447 if (dev
->descriptor
.iManufacturer
)
3448 len
= usb_string(dev
, dev
->descriptor
.iManufacturer
,
3449 card
->longname
, sizeof(card
->longname
));
3452 /* we don't really care if there isn't any vendor string */
3455 strlcat(card
->longname
, " ", sizeof(card
->longname
));
3457 strlcat(card
->longname
, card
->shortname
, sizeof(card
->longname
));
3459 len
= strlcat(card
->longname
, " at ", sizeof(card
->longname
));
3461 if (len
< sizeof(card
->longname
))
3462 usb_make_path(dev
, card
->longname
+ len
, sizeof(card
->longname
) - len
);
3464 strlcat(card
->longname
,
3465 snd_usb_get_speed(dev
) == USB_SPEED_FULL
? ", full speed" : ", high speed",
3466 sizeof(card
->longname
));
3468 snd_usb_audio_create_proc(chip
);
3476 * probe the active usb device
3478 * note that this can be called multiple times per a device, when it
3479 * includes multiple audio control interfaces.
3481 * thus we check the usb device pointer and creates the card instance
3482 * only at the first time. the successive calls of this function will
3483 * append the pcm interface to the corresponding card.
3485 static void *snd_usb_audio_probe(struct usb_device
*dev
,
3486 struct usb_interface
*intf
,
3487 const struct usb_device_id
*usb_id
)
3489 const struct snd_usb_audio_quirk
*quirk
= (const struct snd_usb_audio_quirk
*)usb_id
->driver_info
;
3491 struct snd_usb_audio
*chip
;
3492 struct usb_host_interface
*alts
;
3496 alts
= &intf
->altsetting
[0];
3497 ifnum
= get_iface_desc(alts
)->bInterfaceNumber
;
3498 id
= USB_ID(le16_to_cpu(dev
->descriptor
.idVendor
),
3499 le16_to_cpu(dev
->descriptor
.idProduct
));
3501 if (quirk
&& quirk
->ifnum
>= 0 && ifnum
!= quirk
->ifnum
)
3504 /* SB Extigy needs special boot-up sequence */
3505 /* if more models come, this will go to the quirk list. */
3506 if (id
== USB_ID(0x041e, 0x3000)) {
3507 if (snd_usb_extigy_boot_quirk(dev
, intf
) < 0)
3510 /* SB Audigy 2 NX needs its own boot-up magic, too */
3511 if (id
== USB_ID(0x041e, 0x3020)) {
3512 if (snd_usb_audigy2nx_boot_quirk(dev
) < 0)
3516 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
3517 if (id
== USB_ID(0x10f5, 0x0200)) {
3518 if (snd_usb_cm106_boot_quirk(dev
) < 0)
3523 * found a config. now register to ALSA
3526 /* check whether it's already registered */
3528 mutex_lock(®ister_mutex
);
3529 for (i
= 0; i
< SNDRV_CARDS
; i
++) {
3530 if (usb_chip
[i
] && usb_chip
[i
]->dev
== dev
) {
3531 if (usb_chip
[i
]->shutdown
) {
3532 snd_printk(KERN_ERR
"USB device is in the shutdown state, cannot create a card instance\n");
3540 /* it's a fresh one.
3541 * now look for an empty slot and create a new card instance
3543 for (i
= 0; i
< SNDRV_CARDS
; i
++)
3544 if (enable
[i
] && ! usb_chip
[i
] &&
3545 (vid
[i
] == -1 || vid
[i
] == USB_ID_VENDOR(id
)) &&
3546 (pid
[i
] == -1 || pid
[i
] == USB_ID_PRODUCT(id
))) {
3547 if (snd_usb_audio_create(dev
, i
, quirk
, &chip
) < 0) {
3550 snd_card_set_dev(chip
->card
, &intf
->dev
);
3554 snd_printk(KERN_ERR
"no available usb audio device\n");
3559 err
= 1; /* continue */
3560 if (quirk
&& quirk
->ifnum
!= QUIRK_NO_INTERFACE
) {
3561 /* need some special handlings */
3562 if ((err
= snd_usb_create_quirk(chip
, intf
, quirk
)) < 0)
3567 /* create normal USB audio interfaces */
3568 if (snd_usb_create_streams(chip
, ifnum
) < 0 ||
3569 snd_usb_create_mixer(chip
, ifnum
) < 0) {
3574 /* we are allowed to call snd_card_register() many times */
3575 if (snd_card_register(chip
->card
) < 0) {
3579 usb_chip
[chip
->index
] = chip
;
3580 chip
->num_interfaces
++;
3581 mutex_unlock(®ister_mutex
);
3585 if (chip
&& !chip
->num_interfaces
)
3586 snd_card_free(chip
->card
);
3587 mutex_unlock(®ister_mutex
);
3593 * we need to take care of counter, since disconnection can be called also
3594 * many times as well as usb_audio_probe().
3596 static void snd_usb_audio_disconnect(struct usb_device
*dev
, void *ptr
)
3598 struct snd_usb_audio
*chip
;
3599 struct snd_card
*card
;
3600 struct list_head
*p
;
3602 if (ptr
== (void *)-1L)
3607 mutex_lock(®ister_mutex
);
3609 chip
->num_interfaces
--;
3610 if (chip
->num_interfaces
<= 0) {
3611 snd_card_disconnect(card
);
3612 /* release the pcm resources */
3613 list_for_each(p
, &chip
->pcm_list
) {
3614 snd_usb_stream_disconnect(p
);
3616 /* release the midi resources */
3617 list_for_each(p
, &chip
->midi_list
) {
3618 snd_usbmidi_disconnect(p
);
3620 /* release mixer resources */
3621 list_for_each(p
, &chip
->mixer_list
) {
3622 snd_usb_mixer_disconnect(p
);
3624 mutex_unlock(®ister_mutex
);
3625 snd_card_free_when_closed(card
);
3627 mutex_unlock(®ister_mutex
);
3632 * new 2.5 USB kernel API
3634 static int usb_audio_probe(struct usb_interface
*intf
,
3635 const struct usb_device_id
*id
)
3638 chip
= snd_usb_audio_probe(interface_to_usbdev(intf
), intf
, id
);
3640 dev_set_drvdata(&intf
->dev
, chip
);
3646 static void usb_audio_disconnect(struct usb_interface
*intf
)
3648 snd_usb_audio_disconnect(interface_to_usbdev(intf
),
3649 dev_get_drvdata(&intf
->dev
));
3653 static int __init
snd_usb_audio_init(void)
3655 if (nrpacks
< MIN_PACKS_URB
|| nrpacks
> MAX_PACKS
) {
3656 printk(KERN_WARNING
"invalid nrpacks value.\n");
3659 return usb_register(&usb_audio_driver
);
3663 static void __exit
snd_usb_audio_cleanup(void)
3665 usb_deregister(&usb_audio_driver
);
3668 module_init(snd_usb_audio_init
);
3669 module_exit(snd_usb_audio_cleanup
);