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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * (Tentative) USB Audio Driver for ALSA
3 *
4 * Main and PCM part
5 *
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
7 *
8 * Many codes borrowed from audio.c by
9 * Alan Cox (alan@lxorguk.ukuu.org.uk)
10 * Thomas Sailer (sailer@ife.ee.ethz.ch)
11 *
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 *
28 * NOTES:
29 *
30 * - async unlink should be used for avoiding the sleep inside lock.
31 * 2.4.22 usb-uhci seems buggy for async unlinking and results in
32 * oops. in such a cse, pass async_unlink=0 option.
33 * - the linked URBs would be preferred but not used so far because of
34 * the instability of unlinking.
35 * - type II is not supported properly. there is no device which supports
36 * this type *correctly*. SB extigy looks as if it supports, but it's
37 * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream).
38 */
39
40
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>
Clemens Ladisch6207e512005-08-15 08:35:25 +020048#include <linux/vmalloc.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <linux/moduleparam.h>
Ingo Molnar12aa7572006-01-16 16:36:05 +010050#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#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>
56
57#include "usbaudio.h"
58
59
60MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
61MODULE_DESCRIPTION("USB Audio");
62MODULE_LICENSE("GPL");
63MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
64
65
66static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
67static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
68static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
69static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Vendor ID for this card */
70static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Product ID for this card */
Clemens Ladisch92b9ac72006-09-22 10:57:36 +020071static int nrpacks = 8; /* max. number of packets per urb */
Linus Torvalds1da177e2005-04-16 15:20:36 -070072static int async_unlink = 1;
Thibault LE MEURe3113342006-03-14 11:44:53 +010073static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
75module_param_array(index, int, NULL, 0444);
76MODULE_PARM_DESC(index, "Index value for the USB audio adapter.");
77module_param_array(id, charp, NULL, 0444);
78MODULE_PARM_DESC(id, "ID string for the USB audio adapter.");
79module_param_array(enable, bool, NULL, 0444);
80MODULE_PARM_DESC(enable, "Enable USB audio adapter.");
81module_param_array(vid, int, NULL, 0444);
82MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device.");
83module_param_array(pid, int, NULL, 0444);
84MODULE_PARM_DESC(pid, "Product ID for the USB audio device.");
Clemens Ladisch71d848c2005-08-12 15:18:00 +020085module_param(nrpacks, int, 0644);
Linus Torvalds1da177e2005-04-16 15:20:36 -070086MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB.");
87module_param(async_unlink, bool, 0444);
88MODULE_PARM_DESC(async_unlink, "Use async unlink mode.");
Thibault LE MEURe3113342006-03-14 11:44:53 +010089module_param_array(device_setup, int, NULL, 0444);
90MODULE_PARM_DESC(device_setup, "Specific device setup (if needed).");
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92
93/*
94 * debug the h/w constraints
95 */
96/* #define HW_CONST_DEBUG */
97
98
99/*
100 *
101 */
102
Clemens Ladisch92b9ac72006-09-22 10:57:36 +0200103#define MAX_PACKS 20
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
Clemens Ladisch15a24c072005-08-12 08:25:26 +0200105#define MAX_URBS 8
Clemens Ladisch604cf492005-05-17 09:15:27 +0200106#define SYNC_URBS 4 /* always four urbs for sync */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107#define MIN_PACKS_URB 1 /* minimum 1 packet per urb */
108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109struct audioformat {
110 struct list_head list;
111 snd_pcm_format_t format; /* format type */
112 unsigned int channels; /* # channels */
113 unsigned int fmt_type; /* USB audio format type (1-3) */
114 unsigned int frame_size; /* samples per frame for non-audio */
115 int iface; /* interface number */
116 unsigned char altsetting; /* corresponding alternate setting */
117 unsigned char altset_idx; /* array index of altenate setting */
118 unsigned char attributes; /* corresponding attributes of cs endpoint */
119 unsigned char endpoint; /* endpoint */
120 unsigned char ep_attr; /* endpoint attributes */
121 unsigned int maxpacksize; /* max. packet size */
122 unsigned int rates; /* rate bitmasks */
123 unsigned int rate_min, rate_max; /* min/max rates */
124 unsigned int nr_rates; /* number of rate table entries */
125 unsigned int *rate_table; /* rate table */
126};
127
Takashi Iwai86e07d32005-11-17 15:08:02 +0100128struct snd_usb_substream;
129
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130struct snd_urb_ctx {
131 struct urb *urb;
Clemens Ladisch55851f72005-08-15 08:34:16 +0200132 unsigned int buffer_size; /* size of data buffer, if data URB */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100133 struct snd_usb_substream *subs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 int index; /* index for urb array */
135 int packets; /* number of packets per urb */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136};
137
138struct snd_urb_ops {
Takashi Iwai86e07d32005-11-17 15:08:02 +0100139 int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
140 int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
141 int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
142 int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143};
144
145struct snd_usb_substream {
Takashi Iwai86e07d32005-11-17 15:08:02 +0100146 struct snd_usb_stream *stream;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 struct usb_device *dev;
Takashi Iwai86e07d32005-11-17 15:08:02 +0100148 struct snd_pcm_substream *pcm_substream;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 int direction; /* playback or capture */
150 int interface; /* current interface */
151 int endpoint; /* assigned endpoint */
152 struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */
153 unsigned int cur_rate; /* current rate (for hw_params callback) */
154 unsigned int period_bytes; /* current period bytes (for hw_params callback) */
155 unsigned int format; /* USB data format */
156 unsigned int datapipe; /* the data i/o pipe */
157 unsigned int syncpipe; /* 1 - async out or adaptive in */
Clemens Ladisch573567e2005-06-27 08:17:30 +0200158 unsigned int datainterval; /* log_2 of data packet interval */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */
160 unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */
161 unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */
162 unsigned int freqmax; /* maximum sampling rate, used for buffer management */
163 unsigned int phase; /* phase accumulator */
164 unsigned int maxpacksize; /* max packet size in bytes */
165 unsigned int maxframesize; /* max packet size in frames */
166 unsigned int curpacksize; /* current packet size in bytes (for capture) */
167 unsigned int curframesize; /* current packet size in frames (for capture) */
168 unsigned int fill_max: 1; /* fill max packet size always */
169 unsigned int fmt_type; /* USB audio format type (1-3) */
Clemens Ladisch9624ea82005-08-15 08:25:24 +0200170 unsigned int packs_per_ms; /* packets per millisecond (for playback) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
172 unsigned int running: 1; /* running status */
173
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 unsigned int hwptr_done; /* processed frame position in the buffer */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 unsigned int transfer_done; /* processed frames since last period update */
176 unsigned long active_mask; /* bitmask of active urbs */
177 unsigned long unlink_mask; /* bitmask of unlinked urbs */
178
179 unsigned int nurbs; /* # urbs */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100180 struct snd_urb_ctx dataurb[MAX_URBS]; /* data urb table */
181 struct snd_urb_ctx syncurb[SYNC_URBS]; /* sync urb table */
Clemens Ladisch55851f72005-08-15 08:34:16 +0200182 char *syncbuf; /* sync buffer for all sync URBs */
183 dma_addr_t sync_dma; /* DMA address of syncbuf */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
185 u64 formats; /* format bitmasks (all or'ed) */
186 unsigned int num_formats; /* number of supported audio formats (list) */
187 struct list_head fmt_list; /* format list */
Takashi Iwai8fec5602007-02-01 11:50:56 +0100188 struct snd_pcm_hw_constraint_list rate_list; /* limited rates */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 spinlock_t lock;
190
191 struct snd_urb_ops ops; /* callbacks (must be filled at init) */
192};
193
194
195struct snd_usb_stream {
Takashi Iwai86e07d32005-11-17 15:08:02 +0100196 struct snd_usb_audio *chip;
197 struct snd_pcm *pcm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 int pcm_index;
199 unsigned int fmt_type; /* USB audio format type (1-3) */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100200 struct snd_usb_substream substream[2];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 struct list_head list;
202};
203
204
205/*
206 * we keep the snd_usb_audio_t instances by ourselves for merging
207 * the all interfaces on the same card as one sound device.
208 */
209
Ingo Molnar12aa7572006-01-16 16:36:05 +0100210static DEFINE_MUTEX(register_mutex);
Takashi Iwai86e07d32005-11-17 15:08:02 +0100211static struct snd_usb_audio *usb_chip[SNDRV_CARDS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
213
214/*
215 * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
216 * this will overflow at approx 524 kHz
217 */
Jesper Juhl77933d72005-07-27 11:46:09 -0700218static inline unsigned get_usb_full_speed_rate(unsigned int rate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219{
220 return ((rate << 13) + 62) / 125;
221}
222
223/*
224 * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
225 * this will overflow at approx 4 MHz
226 */
Jesper Juhl77933d72005-07-27 11:46:09 -0700227static inline unsigned get_usb_high_speed_rate(unsigned int rate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228{
229 return ((rate << 10) + 62) / 125;
230}
231
232/* convert our full speed USB rate into sampling rate in Hz */
Jesper Juhl77933d72005-07-27 11:46:09 -0700233static inline unsigned get_full_speed_hz(unsigned int usb_rate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234{
235 return (usb_rate * 125 + (1 << 12)) >> 13;
236}
237
238/* convert our high speed USB rate into sampling rate in Hz */
Jesper Juhl77933d72005-07-27 11:46:09 -0700239static inline unsigned get_high_speed_hz(unsigned int usb_rate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240{
241 return (usb_rate * 125 + (1 << 9)) >> 10;
242}
243
244
245/*
246 * prepare urb for full speed capture sync pipe
247 *
248 * fill the length and offset of each urb descriptor.
249 * the fixed 10.14 frequency is passed through the pipe.
250 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100251static int prepare_capture_sync_urb(struct snd_usb_substream *subs,
252 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 struct urb *urb)
254{
255 unsigned char *cp = urb->transfer_buffer;
John Daiker88518272006-12-28 13:55:05 +0100256 struct snd_urb_ctx *ctx = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 urb->dev = ctx->subs->dev; /* we need to set this at each time */
Clemens Ladischca810902005-05-02 08:55:54 +0200259 urb->iso_frame_desc[0].length = 3;
260 urb->iso_frame_desc[0].offset = 0;
261 cp[0] = subs->freqn >> 2;
262 cp[1] = subs->freqn >> 10;
263 cp[2] = subs->freqn >> 18;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 return 0;
265}
266
267/*
268 * prepare urb for high speed capture sync pipe
269 *
270 * fill the length and offset of each urb descriptor.
271 * the fixed 12.13 frequency is passed as 16.16 through the pipe.
272 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100273static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs,
274 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 struct urb *urb)
276{
277 unsigned char *cp = urb->transfer_buffer;
John Daiker88518272006-12-28 13:55:05 +0100278 struct snd_urb_ctx *ctx = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 urb->dev = ctx->subs->dev; /* we need to set this at each time */
Clemens Ladischca810902005-05-02 08:55:54 +0200281 urb->iso_frame_desc[0].length = 4;
282 urb->iso_frame_desc[0].offset = 0;
283 cp[0] = subs->freqn;
284 cp[1] = subs->freqn >> 8;
285 cp[2] = subs->freqn >> 16;
286 cp[3] = subs->freqn >> 24;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 return 0;
288}
289
290/*
291 * process after capture sync complete
292 * - nothing to do
293 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100294static int retire_capture_sync_urb(struct snd_usb_substream *subs,
295 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 struct urb *urb)
297{
298 return 0;
299}
300
301/*
302 * prepare urb for capture data pipe
303 *
304 * fill the offset and length of each descriptor.
305 *
306 * we use a temporary buffer to write the captured data.
307 * since the length of written data is determined by host, we cannot
308 * write onto the pcm buffer directly... the data is thus copied
309 * later at complete callback to the global buffer.
310 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100311static int prepare_capture_urb(struct snd_usb_substream *subs,
312 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 struct urb *urb)
314{
315 int i, offs;
John Daiker88518272006-12-28 13:55:05 +0100316 struct snd_urb_ctx *ctx = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317
318 offs = 0;
319 urb->dev = ctx->subs->dev; /* we need to set this at each time */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 for (i = 0; i < ctx->packets; i++) {
321 urb->iso_frame_desc[i].offset = offs;
322 urb->iso_frame_desc[i].length = subs->curpacksize;
323 offs += subs->curpacksize;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 urb->transfer_buffer_length = offs;
Clemens Ladischb263a9b2005-08-15 08:22:39 +0200326 urb->number_of_packets = ctx->packets;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 return 0;
328}
329
330/*
331 * process after capture complete
332 *
333 * copy the data from each desctiptor to the pcm buffer, and
334 * update the current position.
335 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100336static int retire_capture_urb(struct snd_usb_substream *subs,
337 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 struct urb *urb)
339{
340 unsigned long flags;
341 unsigned char *cp;
342 int i;
343 unsigned int stride, len, oldptr;
Clemens Ladischb263a9b2005-08-15 08:22:39 +0200344 int period_elapsed = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345
346 stride = runtime->frame_bits >> 3;
347
348 for (i = 0; i < urb->number_of_packets; i++) {
349 cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
350 if (urb->iso_frame_desc[i].status) {
351 snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status);
352 // continue;
353 }
354 len = urb->iso_frame_desc[i].actual_length / stride;
355 if (! len)
356 continue;
357 /* update the current pointer */
358 spin_lock_irqsave(&subs->lock, flags);
359 oldptr = subs->hwptr_done;
360 subs->hwptr_done += len;
361 if (subs->hwptr_done >= runtime->buffer_size)
362 subs->hwptr_done -= runtime->buffer_size;
363 subs->transfer_done += len;
Clemens Ladischb263a9b2005-08-15 08:22:39 +0200364 if (subs->transfer_done >= runtime->period_size) {
365 subs->transfer_done -= runtime->period_size;
366 period_elapsed = 1;
367 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 spin_unlock_irqrestore(&subs->lock, flags);
369 /* copy a data chunk */
370 if (oldptr + len > runtime->buffer_size) {
371 unsigned int cnt = runtime->buffer_size - oldptr;
372 unsigned int blen = cnt * stride;
373 memcpy(runtime->dma_area + oldptr * stride, cp, blen);
374 memcpy(runtime->dma_area, cp + blen, len * stride - blen);
375 } else {
376 memcpy(runtime->dma_area + oldptr * stride, cp, len * stride);
377 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 }
Clemens Ladischb263a9b2005-08-15 08:22:39 +0200379 if (period_elapsed)
380 snd_pcm_period_elapsed(subs->pcm_substream);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 return 0;
382}
383
Clemens Ladische4f8e652006-10-04 13:42:57 +0200384/*
385 * Process after capture complete when paused. Nothing to do.
386 */
387static int retire_paused_capture_urb(struct snd_usb_substream *subs,
388 struct snd_pcm_runtime *runtime,
389 struct urb *urb)
390{
391 return 0;
392}
393
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394
395/*
396 * prepare urb for full speed playback sync pipe
397 *
398 * set up the offset and length to receive the current frequency.
399 */
400
Takashi Iwai86e07d32005-11-17 15:08:02 +0100401static int prepare_playback_sync_urb(struct snd_usb_substream *subs,
402 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 struct urb *urb)
404{
John Daiker88518272006-12-28 13:55:05 +0100405 struct snd_urb_ctx *ctx = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 urb->dev = ctx->subs->dev; /* we need to set this at each time */
Clemens Ladischca810902005-05-02 08:55:54 +0200408 urb->iso_frame_desc[0].length = 3;
409 urb->iso_frame_desc[0].offset = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 return 0;
411}
412
413/*
414 * prepare urb for high speed playback sync pipe
415 *
416 * set up the offset and length to receive the current frequency.
417 */
418
Takashi Iwai86e07d32005-11-17 15:08:02 +0100419static int prepare_playback_sync_urb_hs(struct snd_usb_substream *subs,
420 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 struct urb *urb)
422{
John Daiker88518272006-12-28 13:55:05 +0100423 struct snd_urb_ctx *ctx = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 urb->dev = ctx->subs->dev; /* we need to set this at each time */
Clemens Ladischca810902005-05-02 08:55:54 +0200426 urb->iso_frame_desc[0].length = 4;
427 urb->iso_frame_desc[0].offset = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 return 0;
429}
430
431/*
432 * process after full speed playback sync complete
433 *
434 * retrieve the current 10.14 frequency from pipe, and set it.
435 * the value is referred in prepare_playback_urb().
436 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100437static int retire_playback_sync_urb(struct snd_usb_substream *subs,
438 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 struct urb *urb)
440{
Clemens Ladischca810902005-05-02 08:55:54 +0200441 unsigned int f;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 unsigned long flags;
443
Clemens Ladischca810902005-05-02 08:55:54 +0200444 if (urb->iso_frame_desc[0].status == 0 &&
445 urb->iso_frame_desc[0].actual_length == 3) {
446 f = combine_triple((u8*)urb->transfer_buffer) << 2;
Clemens Ladisch50cdbf12005-05-13 07:44:13 +0200447 if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
448 spin_lock_irqsave(&subs->lock, flags);
449 subs->freqm = f;
450 spin_unlock_irqrestore(&subs->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 }
453
454 return 0;
455}
456
457/*
458 * process after high speed playback sync complete
459 *
460 * retrieve the current 12.13 frequency from pipe, and set it.
461 * the value is referred in prepare_playback_urb().
462 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100463static int retire_playback_sync_urb_hs(struct snd_usb_substream *subs,
464 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 struct urb *urb)
466{
Clemens Ladischca810902005-05-02 08:55:54 +0200467 unsigned int f;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 unsigned long flags;
469
Clemens Ladischca810902005-05-02 08:55:54 +0200470 if (urb->iso_frame_desc[0].status == 0 &&
471 urb->iso_frame_desc[0].actual_length == 4) {
472 f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
Clemens Ladisch50cdbf12005-05-13 07:44:13 +0200473 if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
474 spin_lock_irqsave(&subs->lock, flags);
475 subs->freqm = f;
476 spin_unlock_irqrestore(&subs->lock, flags);
477 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 }
479
480 return 0;
481}
482
Clemens Ladisch9568f462006-01-12 08:19:21 +0100483/* determine the number of frames in the next packet */
484static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs)
485{
486 if (subs->fill_max)
487 return subs->maxframesize;
488 else {
489 subs->phase = (subs->phase & 0xffff)
490 + (subs->freqm << subs->datainterval);
491 return min(subs->phase >> 16, subs->maxframesize);
492 }
493}
494
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495/*
Clemens Ladische4f8e652006-10-04 13:42:57 +0200496 * Prepare urb for streaming before playback starts or when paused.
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100497 *
Clemens Ladische4f8e652006-10-04 13:42:57 +0200498 * We don't have any data, so we send a frame of silence.
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100499 */
Clemens Ladische4f8e652006-10-04 13:42:57 +0200500static int prepare_nodata_playback_urb(struct snd_usb_substream *subs,
501 struct snd_pcm_runtime *runtime,
502 struct urb *urb)
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100503{
Clemens Ladisch4b284922006-01-12 08:17:49 +0100504 unsigned int i, offs, counts;
Takashi Iwai86e07d32005-11-17 15:08:02 +0100505 struct snd_urb_ctx *ctx = urb->context;
Clemens Ladisch4b284922006-01-12 08:17:49 +0100506 int stride = runtime->frame_bits >> 3;
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100507
Clemens Ladisch4b284922006-01-12 08:17:49 +0100508 offs = 0;
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100509 urb->dev = ctx->subs->dev;
510 urb->number_of_packets = subs->packs_per_ms;
511 for (i = 0; i < subs->packs_per_ms; ++i) {
Clemens Ladisch9568f462006-01-12 08:19:21 +0100512 counts = snd_usb_audio_next_packet_size(subs);
Clemens Ladisch4b284922006-01-12 08:17:49 +0100513 urb->iso_frame_desc[i].offset = offs * stride;
514 urb->iso_frame_desc[i].length = counts * stride;
515 offs += counts;
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100516 }
Clemens Ladisch4b284922006-01-12 08:17:49 +0100517 urb->transfer_buffer_length = offs * stride;
518 memset(urb->transfer_buffer,
519 subs->cur_audiofmt->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0,
520 offs * stride);
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100521 return 0;
522}
523
524/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 * prepare urb for playback data pipe
526 *
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +0200527 * Since a URB can handle only a single linear buffer, we must use double
528 * buffering when the data to be transferred overflows the buffer boundary.
529 * To avoid inconsistencies when updating hwptr_done, we use double buffering
530 * for all URBs.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100532static int prepare_playback_urb(struct snd_usb_substream *subs,
533 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 struct urb *urb)
535{
536 int i, stride, offs;
537 unsigned int counts;
538 unsigned long flags;
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +0200539 int period_elapsed = 0;
John Daiker88518272006-12-28 13:55:05 +0100540 struct snd_urb_ctx *ctx = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541
542 stride = runtime->frame_bits >> 3;
543
544 offs = 0;
545 urb->dev = ctx->subs->dev; /* we need to set this at each time */
546 urb->number_of_packets = 0;
547 spin_lock_irqsave(&subs->lock, flags);
548 for (i = 0; i < ctx->packets; i++) {
Clemens Ladisch9568f462006-01-12 08:19:21 +0100549 counts = snd_usb_audio_next_packet_size(subs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 /* set up descriptor */
551 urb->iso_frame_desc[i].offset = offs * stride;
552 urb->iso_frame_desc[i].length = counts * stride;
553 offs += counts;
554 urb->number_of_packets++;
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +0200555 subs->transfer_done += counts;
556 if (subs->transfer_done >= runtime->period_size) {
557 subs->transfer_done -= runtime->period_size;
558 period_elapsed = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 if (subs->fmt_type == USB_FORMAT_TYPE_II) {
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +0200560 if (subs->transfer_done > 0) {
561 /* FIXME: fill-max mode is not
562 * supported yet */
563 offs -= subs->transfer_done;
564 counts -= subs->transfer_done;
565 urb->iso_frame_desc[i].length =
566 counts * stride;
567 subs->transfer_done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 }
569 i++;
570 if (i < ctx->packets) {
571 /* add a transfer delimiter */
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +0200572 urb->iso_frame_desc[i].offset =
573 offs * stride;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 urb->iso_frame_desc[i].length = 0;
575 urb->number_of_packets++;
576 }
Clemens Ladisch9624ea82005-08-15 08:25:24 +0200577 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 }
Clemens Ladisch9624ea82005-08-15 08:25:24 +0200580 /* finish at the frame boundary at/after the period boundary */
581 if (period_elapsed &&
582 (i & (subs->packs_per_ms - 1)) == subs->packs_per_ms - 1)
583 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 }
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +0200585 if (subs->hwptr_done + offs > runtime->buffer_size) {
586 /* err, the transferred area goes over buffer boundary. */
587 unsigned int len = runtime->buffer_size - subs->hwptr_done;
588 memcpy(urb->transfer_buffer,
589 runtime->dma_area + subs->hwptr_done * stride,
590 len * stride);
591 memcpy(urb->transfer_buffer + len * stride,
592 runtime->dma_area,
593 (offs - len) * stride);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 } else {
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +0200595 memcpy(urb->transfer_buffer,
596 runtime->dma_area + subs->hwptr_done * stride,
597 offs * stride);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 }
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +0200599 subs->hwptr_done += offs;
600 if (subs->hwptr_done >= runtime->buffer_size)
601 subs->hwptr_done -= runtime->buffer_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 spin_unlock_irqrestore(&subs->lock, flags);
603 urb->transfer_buffer_length = offs * stride;
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100604 if (period_elapsed)
605 snd_pcm_period_elapsed(subs->pcm_substream);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 return 0;
607}
608
609/*
610 * process after playback data complete
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +0200611 * - nothing to do
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100613static int retire_playback_urb(struct snd_usb_substream *subs,
614 struct snd_pcm_runtime *runtime,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 struct urb *urb)
616{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 return 0;
618}
619
620
621/*
622 */
623static struct snd_urb_ops audio_urb_ops[2] = {
624 {
Clemens Ladische4f8e652006-10-04 13:42:57 +0200625 .prepare = prepare_nodata_playback_urb,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 .retire = retire_playback_urb,
627 .prepare_sync = prepare_playback_sync_urb,
628 .retire_sync = retire_playback_sync_urb,
629 },
630 {
631 .prepare = prepare_capture_urb,
632 .retire = retire_capture_urb,
633 .prepare_sync = prepare_capture_sync_urb,
634 .retire_sync = retire_capture_sync_urb,
635 },
636};
637
638static struct snd_urb_ops audio_urb_ops_high_speed[2] = {
639 {
Clemens Ladische4f8e652006-10-04 13:42:57 +0200640 .prepare = prepare_nodata_playback_urb,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641 .retire = retire_playback_urb,
642 .prepare_sync = prepare_playback_sync_urb_hs,
643 .retire_sync = retire_playback_sync_urb_hs,
644 },
645 {
646 .prepare = prepare_capture_urb,
647 .retire = retire_capture_urb,
648 .prepare_sync = prepare_capture_sync_urb_hs,
649 .retire_sync = retire_capture_sync_urb,
650 },
651};
652
653/*
654 * complete callback from data urb
655 */
David Howells7d12e782006-10-05 14:55:46 +0100656static void snd_complete_urb(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657{
John Daiker88518272006-12-28 13:55:05 +0100658 struct snd_urb_ctx *ctx = urb->context;
Takashi Iwai86e07d32005-11-17 15:08:02 +0100659 struct snd_usb_substream *subs = ctx->subs;
660 struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 int err = 0;
662
663 if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) ||
664 ! subs->running || /* can be stopped during retire callback */
665 (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 ||
666 (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
667 clear_bit(ctx->index, &subs->active_mask);
668 if (err < 0) {
669 snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err);
670 snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
671 }
672 }
673}
674
675
676/*
677 * complete callback from sync urb
678 */
David Howells7d12e782006-10-05 14:55:46 +0100679static void snd_complete_sync_urb(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680{
John Daiker88518272006-12-28 13:55:05 +0100681 struct snd_urb_ctx *ctx = urb->context;
Takashi Iwai86e07d32005-11-17 15:08:02 +0100682 struct snd_usb_substream *subs = ctx->subs;
683 struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 int err = 0;
685
686 if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) ||
687 ! subs->running || /* can be stopped during retire callback */
688 (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 ||
689 (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
690 clear_bit(ctx->index + 16, &subs->active_mask);
691 if (err < 0) {
692 snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err);
693 snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
694 }
695 }
696}
697
698
Clemens Ladisch6207e512005-08-15 08:35:25 +0200699/* get the physical page pointer at the given offset */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100700static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
Clemens Ladisch6207e512005-08-15 08:35:25 +0200701 unsigned long offset)
702{
703 void *pageptr = subs->runtime->dma_area + offset;
704 return vmalloc_to_page(pageptr);
705}
706
707/* allocate virtual buffer; may be called more than once */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100708static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size)
Clemens Ladisch6207e512005-08-15 08:35:25 +0200709{
Takashi Iwai86e07d32005-11-17 15:08:02 +0100710 struct snd_pcm_runtime *runtime = subs->runtime;
Clemens Ladisch6207e512005-08-15 08:35:25 +0200711 if (runtime->dma_area) {
712 if (runtime->dma_bytes >= size)
713 return 0; /* already large enough */
Takashi Iwaib1d57762005-10-10 11:56:31 +0200714 vfree(runtime->dma_area);
Clemens Ladisch6207e512005-08-15 08:35:25 +0200715 }
Takashi Iwaib1d57762005-10-10 11:56:31 +0200716 runtime->dma_area = vmalloc(size);
Clemens Ladisch6207e512005-08-15 08:35:25 +0200717 if (! runtime->dma_area)
718 return -ENOMEM;
719 runtime->dma_bytes = size;
720 return 0;
721}
722
723/* free virtual buffer; may be called more than once */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100724static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
Clemens Ladisch6207e512005-08-15 08:35:25 +0200725{
Takashi Iwai86e07d32005-11-17 15:08:02 +0100726 struct snd_pcm_runtime *runtime = subs->runtime;
Jesper Juhl9c4be3d2006-02-09 20:04:16 +0100727
728 vfree(runtime->dma_area);
729 runtime->dma_area = NULL;
Clemens Ladisch6207e512005-08-15 08:35:25 +0200730 return 0;
731}
732
733
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734/*
735 * unlink active urbs.
736 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100737static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738{
739 unsigned int i;
740 int async;
741
742 subs->running = 0;
743
744 if (!force && subs->stream->chip->shutdown) /* to be sure... */
745 return -EBADFD;
746
747 async = !can_sleep && async_unlink;
748
749 if (! async && in_interrupt())
750 return 0;
751
752 for (i = 0; i < subs->nurbs; i++) {
753 if (test_bit(i, &subs->active_mask)) {
754 if (! test_and_set_bit(i, &subs->unlink_mask)) {
755 struct urb *u = subs->dataurb[i].urb;
Alan Sternb375a042005-07-29 16:11:07 -0400756 if (async)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 usb_unlink_urb(u);
Alan Sternb375a042005-07-29 16:11:07 -0400758 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 usb_kill_urb(u);
760 }
761 }
762 }
763 if (subs->syncpipe) {
764 for (i = 0; i < SYNC_URBS; i++) {
765 if (test_bit(i+16, &subs->active_mask)) {
766 if (! test_and_set_bit(i+16, &subs->unlink_mask)) {
767 struct urb *u = subs->syncurb[i].urb;
Alan Sternb375a042005-07-29 16:11:07 -0400768 if (async)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 usb_unlink_urb(u);
Alan Sternb375a042005-07-29 16:11:07 -0400770 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 usb_kill_urb(u);
772 }
773 }
774 }
775 }
776 return 0;
777}
778
779
Clemens Ladisch32e19e82006-03-09 07:58:39 +0100780static const char *usb_error_string(int err)
781{
782 switch (err) {
783 case -ENODEV:
784 return "no device";
785 case -ENOENT:
786 return "endpoint not enabled";
787 case -EPIPE:
788 return "endpoint stalled";
789 case -ENOSPC:
790 return "not enough bandwidth";
791 case -ESHUTDOWN:
792 return "device disabled";
793 case -EHOSTUNREACH:
794 return "device suspended";
Clemens Ladisch3e964432006-03-14 08:06:12 +0100795#ifndef CONFIG_USB_EHCI_SPLIT_ISO
796 case -ENOSYS:
797 return "enable CONFIG_USB_EHCI_SPLIT_ISO to play through a hub";
798#endif
Clemens Ladisch32e19e82006-03-09 07:58:39 +0100799 case -EINVAL:
800 case -EAGAIN:
801 case -EFBIG:
802 case -EMSGSIZE:
803 return "internal error";
804 default:
805 return "unknown error";
806 }
807}
808
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809/*
810 * set up and start data/sync urbs
811 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100812static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813{
814 unsigned int i;
815 int err;
816
817 if (subs->stream->chip->shutdown)
818 return -EBADFD;
819
820 for (i = 0; i < subs->nurbs; i++) {
821 snd_assert(subs->dataurb[i].urb, return -EINVAL);
822 if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) {
823 snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i);
824 goto __error;
825 }
826 }
827 if (subs->syncpipe) {
828 for (i = 0; i < SYNC_URBS; i++) {
829 snd_assert(subs->syncurb[i].urb, return -EINVAL);
830 if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) {
831 snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i);
832 goto __error;
833 }
834 }
835 }
836
837 subs->active_mask = 0;
838 subs->unlink_mask = 0;
839 subs->running = 1;
840 for (i = 0; i < subs->nurbs; i++) {
Clemens Ladisch32e19e82006-03-09 07:58:39 +0100841 err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC);
842 if (err < 0) {
843 snd_printk(KERN_ERR "cannot submit datapipe "
844 "for urb %d, error %d: %s\n",
845 i, err, usb_error_string(err));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 goto __error;
847 }
848 set_bit(i, &subs->active_mask);
849 }
850 if (subs->syncpipe) {
851 for (i = 0; i < SYNC_URBS; i++) {
Clemens Ladisch32e19e82006-03-09 07:58:39 +0100852 err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC);
853 if (err < 0) {
854 snd_printk(KERN_ERR "cannot submit syncpipe "
855 "for urb %d, error %d: %s\n",
856 i, err, usb_error_string(err));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 goto __error;
858 }
859 set_bit(i + 16, &subs->active_mask);
860 }
861 }
862 return 0;
863
864 __error:
865 // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
866 deactivate_urbs(subs, 0, 0);
867 return -EPIPE;
868}
869
870
871/*
872 * wait until all urbs are processed.
873 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100874static int wait_clear_urbs(struct snd_usb_substream *subs)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875{
Nishanth Aravamudanb27c1872005-07-09 10:54:37 +0200876 unsigned long end_time = jiffies + msecs_to_jiffies(1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877 unsigned int i;
878 int alive;
879
880 do {
881 alive = 0;
882 for (i = 0; i < subs->nurbs; i++) {
883 if (test_bit(i, &subs->active_mask))
884 alive++;
885 }
886 if (subs->syncpipe) {
887 for (i = 0; i < SYNC_URBS; i++) {
888 if (test_bit(i + 16, &subs->active_mask))
889 alive++;
890 }
891 }
892 if (! alive)
893 break;
Nishanth Aravamudan8433a502005-10-24 15:02:37 +0200894 schedule_timeout_uninterruptible(1);
Nishanth Aravamudanb27c1872005-07-09 10:54:37 +0200895 } while (time_before(jiffies, end_time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 if (alive)
897 snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
898 return 0;
899}
900
901
902/*
903 * return the current pcm pointer. just return the hwptr_done value.
904 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100905static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906{
Takashi Iwai86e07d32005-11-17 15:08:02 +0100907 struct snd_usb_substream *subs;
Clemens Ladischdaa150e2005-08-15 08:25:50 +0200908 snd_pcm_uframes_t hwptr_done;
909
Takashi Iwai86e07d32005-11-17 15:08:02 +0100910 subs = (struct snd_usb_substream *)substream->runtime->private_data;
Clemens Ladischdaa150e2005-08-15 08:25:50 +0200911 spin_lock(&subs->lock);
912 hwptr_done = subs->hwptr_done;
913 spin_unlock(&subs->lock);
914 return hwptr_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915}
916
917
918/*
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100919 * start/stop playback substream
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100921static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream *substream,
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100922 int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923{
Takashi Iwai86e07d32005-11-17 15:08:02 +0100924 struct snd_usb_substream *subs = substream->runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
926 switch (cmd) {
927 case SNDRV_PCM_TRIGGER_START:
Clemens Ladische4f8e652006-10-04 13:42:57 +0200928 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100929 subs->ops.prepare = prepare_playback_urb;
930 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931 case SNDRV_PCM_TRIGGER_STOP:
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100932 return deactivate_urbs(subs, 0, 0);
Clemens Ladische4f8e652006-10-04 13:42:57 +0200933 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
934 subs->ops.prepare = prepare_nodata_playback_urb;
935 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936 default:
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100937 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938 }
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100939}
940
941/*
942 * start/stop capture substream
943 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100944static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream *substream,
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100945 int cmd)
946{
Takashi Iwai86e07d32005-11-17 15:08:02 +0100947 struct snd_usb_substream *subs = substream->runtime->private_data;
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100948
949 switch (cmd) {
950 case SNDRV_PCM_TRIGGER_START:
Clemens Ladische4f8e652006-10-04 13:42:57 +0200951 subs->ops.retire = retire_capture_urb;
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100952 return start_urbs(subs, substream->runtime);
953 case SNDRV_PCM_TRIGGER_STOP:
954 return deactivate_urbs(subs, 0, 0);
Clemens Ladische4f8e652006-10-04 13:42:57 +0200955 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
956 subs->ops.retire = retire_paused_capture_urb;
957 return 0;
958 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
959 subs->ops.retire = retire_capture_urb;
960 return 0;
Clemens Ladischb55bbf02005-11-02 11:32:52 +0100961 default:
962 return -EINVAL;
963 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964}
965
966
967/*
968 * release a urb data
969 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100970static void release_urb_ctx(struct snd_urb_ctx *u)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971{
972 if (u->urb) {
Clemens Ladisch55851f72005-08-15 08:34:16 +0200973 if (u->buffer_size)
974 usb_buffer_free(u->subs->dev, u->buffer_size,
975 u->urb->transfer_buffer,
976 u->urb->transfer_dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977 usb_free_urb(u->urb);
978 u->urb = NULL;
979 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980}
981
982/*
983 * release a substream
984 */
Takashi Iwai86e07d32005-11-17 15:08:02 +0100985static void release_substream_urbs(struct snd_usb_substream *subs, int force)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986{
987 int i;
988
989 /* stop urbs (to be sure) */
990 deactivate_urbs(subs, force, 1);
991 wait_clear_urbs(subs);
992
993 for (i = 0; i < MAX_URBS; i++)
994 release_urb_ctx(&subs->dataurb[i]);
995 for (i = 0; i < SYNC_URBS; i++)
996 release_urb_ctx(&subs->syncurb[i]);
Clemens Ladisch55851f72005-08-15 08:34:16 +0200997 usb_buffer_free(subs->dev, SYNC_URBS * 4,
998 subs->syncbuf, subs->sync_dma);
999 subs->syncbuf = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000 subs->nurbs = 0;
1001}
1002
1003/*
1004 * initialize a substream for plaback/capture
1005 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01001006static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int period_bytes,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007 unsigned int rate, unsigned int frame_bits)
1008{
1009 unsigned int maxsize, n, i;
1010 int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
Clemens Ladischa93bf992005-08-12 15:19:39 +02001011 unsigned int npacks[MAX_URBS], urb_packs, total_packs, packs_per_ms;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012
1013 /* calculate the frequency in 16.16 format */
1014 if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
1015 subs->freqn = get_usb_full_speed_rate(rate);
1016 else
1017 subs->freqn = get_usb_high_speed_rate(rate);
1018 subs->freqm = subs->freqn;
Clemens Ladisch573567e2005-06-27 08:17:30 +02001019 /* calculate max. frequency */
1020 if (subs->maxpacksize) {
1021 /* whatever fits into a max. size packet */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022 maxsize = subs->maxpacksize;
Clemens Ladisch573567e2005-06-27 08:17:30 +02001023 subs->freqmax = (maxsize / (frame_bits >> 3))
1024 << (16 - subs->datainterval);
1025 } else {
1026 /* no max. packet size: just take 25% higher than nominal */
1027 subs->freqmax = subs->freqn + (subs->freqn >> 2);
1028 maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3))
1029 >> (16 - subs->datainterval);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001030 }
Clemens Ladisch573567e2005-06-27 08:17:30 +02001031 subs->phase = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032
1033 if (subs->fill_max)
1034 subs->curpacksize = subs->maxpacksize;
1035 else
1036 subs->curpacksize = maxsize;
1037
Clemens Ladischa93bf992005-08-12 15:19:39 +02001038 if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
1039 packs_per_ms = 8 >> subs->datainterval;
1040 else
1041 packs_per_ms = 1;
Clemens Ladisch9624ea82005-08-15 08:25:24 +02001042 subs->packs_per_ms = packs_per_ms;
Clemens Ladischa93bf992005-08-12 15:19:39 +02001043
Clemens Ladisch71d848c2005-08-12 15:18:00 +02001044 if (is_playback) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 urb_packs = nrpacks;
Clemens Ladisch71d848c2005-08-12 15:18:00 +02001046 urb_packs = max(urb_packs, (unsigned int)MIN_PACKS_URB);
1047 urb_packs = min(urb_packs, (unsigned int)MAX_PACKS);
1048 } else
Clemens Ladisch15a24c072005-08-12 08:25:26 +02001049 urb_packs = 1;
Clemens Ladischa93bf992005-08-12 15:19:39 +02001050 urb_packs *= packs_per_ms;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052 /* decide how many packets to be used */
Clemens Ladisch15a24c072005-08-12 08:25:26 +02001053 if (is_playback) {
Clemens Ladischd6db3922005-08-12 08:28:27 +02001054 unsigned int minsize;
1055 /* determine how small a packet can be */
1056 minsize = (subs->freqn >> (16 - subs->datainterval))
1057 * (frame_bits >> 3);
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +02001058 /* with sync from device, assume it can be 12% lower */
Clemens Ladischd6db3922005-08-12 08:28:27 +02001059 if (subs->syncpipe)
Clemens Ladisch7efd8bc82005-08-15 08:24:44 +02001060 minsize -= minsize >> 3;
Clemens Ladischd6db3922005-08-12 08:28:27 +02001061 minsize = max(minsize, 1u);
1062 total_packs = (period_bytes + minsize - 1) / minsize;
Clemens Ladischa93bf992005-08-12 15:19:39 +02001063 /* round up to multiple of packs_per_ms */
1064 total_packs = (total_packs + packs_per_ms - 1)
1065 & ~(packs_per_ms - 1);
1066 /* we need at least two URBs for queueing */
1067 if (total_packs < 2 * MIN_PACKS_URB * packs_per_ms)
1068 total_packs = 2 * MIN_PACKS_URB * packs_per_ms;
Clemens Ladisch15a24c072005-08-12 08:25:26 +02001069 } else {
1070 total_packs = MAX_URBS * urb_packs;
1071 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072 subs->nurbs = (total_packs + urb_packs - 1) / urb_packs;
1073 if (subs->nurbs > MAX_URBS) {
1074 /* too much... */
1075 subs->nurbs = MAX_URBS;
1076 total_packs = MAX_URBS * urb_packs;
1077 }
1078 n = total_packs;
1079 for (i = 0; i < subs->nurbs; i++) {
1080 npacks[i] = n > urb_packs ? urb_packs : n;
1081 n -= urb_packs;
1082 }
1083 if (subs->nurbs <= 1) {
1084 /* too little - we need at least two packets
1085 * to ensure contiguous playback/capture
1086 */
1087 subs->nurbs = 2;
1088 npacks[0] = (total_packs + 1) / 2;
1089 npacks[1] = total_packs - npacks[0];
Clemens Ladischa93bf992005-08-12 15:19:39 +02001090 } else if (npacks[subs->nurbs-1] < MIN_PACKS_URB * packs_per_ms) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091 /* the last packet is too small.. */
1092 if (subs->nurbs > 2) {
1093 /* merge to the first one */
1094 npacks[0] += npacks[subs->nurbs - 1];
1095 subs->nurbs--;
1096 } else {
1097 /* divide to two */
1098 subs->nurbs = 2;
1099 npacks[0] = (total_packs + 1) / 2;
1100 npacks[1] = total_packs - npacks[0];
1101 }
1102 }
1103
1104 /* allocate and initialize data urbs */
1105 for (i = 0; i < subs->nurbs; i++) {
Takashi Iwai86e07d32005-11-17 15:08:02 +01001106 struct snd_urb_ctx *u = &subs->dataurb[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107 u->index = i;
1108 u->subs = subs;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 u->packets = npacks[i];
Clemens Ladisch55851f72005-08-15 08:34:16 +02001110 u->buffer_size = maxsize * u->packets;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111 if (subs->fmt_type == USB_FORMAT_TYPE_II)
1112 u->packets++; /* for transfer delimiter */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 u->urb = usb_alloc_urb(u->packets, GFP_KERNEL);
Clemens Ladisch55851f72005-08-15 08:34:16 +02001114 if (! u->urb)
1115 goto out_of_memory;
1116 u->urb->transfer_buffer =
1117 usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL,
1118 &u->urb->transfer_dma);
1119 if (! u->urb->transfer_buffer)
1120 goto out_of_memory;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121 u->urb->pipe = subs->datapipe;
Clemens Ladisch55851f72005-08-15 08:34:16 +02001122 u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
Clemens Ladisch573567e2005-06-27 08:17:30 +02001123 u->urb->interval = 1 << subs->datainterval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001124 u->urb->context = u;
Clemens Ladisch3527a002005-09-26 10:03:09 +02001125 u->urb->complete = snd_complete_urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126 }
1127
1128 if (subs->syncpipe) {
1129 /* allocate and initialize sync urbs */
Clemens Ladisch55851f72005-08-15 08:34:16 +02001130 subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4,
1131 GFP_KERNEL, &subs->sync_dma);
1132 if (! subs->syncbuf)
1133 goto out_of_memory;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134 for (i = 0; i < SYNC_URBS; i++) {
Takashi Iwai86e07d32005-11-17 15:08:02 +01001135 struct snd_urb_ctx *u = &subs->syncurb[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 u->index = i;
1137 u->subs = subs;
Clemens Ladischca810902005-05-02 08:55:54 +02001138 u->packets = 1;
1139 u->urb = usb_alloc_urb(1, GFP_KERNEL);
Clemens Ladisch55851f72005-08-15 08:34:16 +02001140 if (! u->urb)
1141 goto out_of_memory;
Clemens Ladischca810902005-05-02 08:55:54 +02001142 u->urb->transfer_buffer = subs->syncbuf + i * 4;
Clemens Ladisch55851f72005-08-15 08:34:16 +02001143 u->urb->transfer_dma = subs->sync_dma + i * 4;
Clemens Ladischca810902005-05-02 08:55:54 +02001144 u->urb->transfer_buffer_length = 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145 u->urb->pipe = subs->syncpipe;
Clemens Ladisch55851f72005-08-15 08:34:16 +02001146 u->urb->transfer_flags = URB_ISO_ASAP |
1147 URB_NO_TRANSFER_DMA_MAP;
Clemens Ladischca810902005-05-02 08:55:54 +02001148 u->urb->number_of_packets = 1;
Clemens Ladisch1149a642005-05-02 08:53:46 +02001149 u->urb->interval = 1 << subs->syncinterval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150 u->urb->context = u;
Clemens Ladisch3527a002005-09-26 10:03:09 +02001151 u->urb->complete = snd_complete_sync_urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152 }
1153 }
1154 return 0;
Clemens Ladisch55851f72005-08-15 08:34:16 +02001155
1156out_of_memory:
1157 release_substream_urbs(subs, 0);
1158 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001159}
1160
1161
1162/*
1163 * find a matching audio format
1164 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01001165static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166 unsigned int rate, unsigned int channels)
1167{
1168 struct list_head *p;
1169 struct audioformat *found = NULL;
1170 int cur_attr = 0, attr;
1171
1172 list_for_each(p, &subs->fmt_list) {
1173 struct audioformat *fp;
1174 fp = list_entry(p, struct audioformat, list);
1175 if (fp->format != format || fp->channels != channels)
1176 continue;
1177 if (rate < fp->rate_min || rate > fp->rate_max)
1178 continue;
1179 if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) {
1180 unsigned int i;
1181 for (i = 0; i < fp->nr_rates; i++)
1182 if (fp->rate_table[i] == rate)
1183 break;
1184 if (i >= fp->nr_rates)
1185 continue;
1186 }
1187 attr = fp->ep_attr & EP_ATTR_MASK;
1188 if (! found) {
1189 found = fp;
1190 cur_attr = attr;
1191 continue;
1192 }
1193 /* avoid async out and adaptive in if the other method
1194 * supports the same format.
1195 * this is a workaround for the case like
1196 * M-audio audiophile USB.
1197 */
1198 if (attr != cur_attr) {
1199 if ((attr == EP_ATTR_ASYNC &&
1200 subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
1201 (attr == EP_ATTR_ADAPTIVE &&
1202 subs->direction == SNDRV_PCM_STREAM_CAPTURE))
1203 continue;
1204 if ((cur_attr == EP_ATTR_ASYNC &&
1205 subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
1206 (cur_attr == EP_ATTR_ADAPTIVE &&
1207 subs->direction == SNDRV_PCM_STREAM_CAPTURE)) {
1208 found = fp;
1209 cur_attr = attr;
1210 continue;
1211 }
1212 }
1213 /* find the format with the largest max. packet size */
1214 if (fp->maxpacksize > found->maxpacksize) {
1215 found = fp;
1216 cur_attr = attr;
1217 }
1218 }
1219 return found;
1220}
1221
1222
1223/*
1224 * initialize the picth control and sample rate
1225 */
1226static int init_usb_pitch(struct usb_device *dev, int iface,
1227 struct usb_host_interface *alts,
1228 struct audioformat *fmt)
1229{
1230 unsigned int ep;
1231 unsigned char data[1];
1232 int err;
1233
1234 ep = get_endpoint(alts, 0)->bEndpointAddress;
1235 /* if endpoint has pitch control, enable it */
1236 if (fmt->attributes & EP_CS_ATTR_PITCH_CONTROL) {
1237 data[0] = 1;
1238 if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
1239 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
1240 PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
1241 snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n",
1242 dev->devnum, iface, ep);
1243 return err;
1244 }
1245 }
1246 return 0;
1247}
1248
1249static int init_usb_sample_rate(struct usb_device *dev, int iface,
1250 struct usb_host_interface *alts,
1251 struct audioformat *fmt, int rate)
1252{
1253 unsigned int ep;
1254 unsigned char data[3];
1255 int err;
1256
1257 ep = get_endpoint(alts, 0)->bEndpointAddress;
1258 /* if endpoint has sampling rate control, set it */
1259 if (fmt->attributes & EP_CS_ATTR_SAMPLE_RATE) {
1260 int crate;
1261 data[0] = rate;
1262 data[1] = rate >> 8;
1263 data[2] = rate >> 16;
1264 if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
1265 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
1266 SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
1267 snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep 0x%x\n",
1268 dev->devnum, iface, fmt->altsetting, rate, ep);
1269 return err;
1270 }
1271 if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR,
1272 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
1273 SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
1274 snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep 0x%x\n",
1275 dev->devnum, iface, fmt->altsetting, ep);
1276 return 0; /* some devices don't support reading */
1277 }
1278 crate = data[0] | (data[1] << 8) | (data[2] << 16);
1279 if (crate != rate) {
1280 snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate);
1281 // runtime->rate = crate;
1282 }
1283 }
1284 return 0;
1285}
1286
1287/*
1288 * find a matching format and set up the interface
1289 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01001290static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291{
1292 struct usb_device *dev = subs->dev;
1293 struct usb_host_interface *alts;
1294 struct usb_interface_descriptor *altsd;
1295 struct usb_interface *iface;
1296 unsigned int ep, attr;
1297 int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
1298 int err;
1299
1300 iface = usb_ifnum_to_if(dev, fmt->iface);
1301 snd_assert(iface, return -EINVAL);
1302 alts = &iface->altsetting[fmt->altset_idx];
1303 altsd = get_iface_desc(alts);
1304 snd_assert(altsd->bAlternateSetting == fmt->altsetting, return -EINVAL);
1305
1306 if (fmt == subs->cur_audiofmt)
1307 return 0;
1308
1309 /* close the old interface */
1310 if (subs->interface >= 0 && subs->interface != fmt->iface) {
Oliver Neukum5149fe2c2007-08-31 12:15:27 +02001311 if (usb_set_interface(subs->dev, subs->interface, 0) < 0) {
1312 snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed\n",
1313 dev->devnum, fmt->iface, fmt->altsetting);
1314 return -EIO;
1315 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316 subs->interface = -1;
1317 subs->format = 0;
1318 }
1319
1320 /* set interface */
1321 if (subs->interface != fmt->iface || subs->format != fmt->altset_idx) {
1322 if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) {
1323 snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n",
1324 dev->devnum, fmt->iface, fmt->altsetting);
1325 return -EIO;
1326 }
1327 snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting);
1328 subs->interface = fmt->iface;
1329 subs->format = fmt->altset_idx;
1330 }
1331
1332 /* create a data pipe */
1333 ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK;
1334 if (is_playback)
1335 subs->datapipe = usb_sndisocpipe(dev, ep);
1336 else
1337 subs->datapipe = usb_rcvisocpipe(dev, ep);
Clemens Ladisch573567e2005-06-27 08:17:30 +02001338 if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH &&
1339 get_endpoint(alts, 0)->bInterval >= 1 &&
1340 get_endpoint(alts, 0)->bInterval <= 4)
1341 subs->datainterval = get_endpoint(alts, 0)->bInterval - 1;
1342 else
1343 subs->datainterval = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 subs->syncpipe = subs->syncinterval = 0;
1345 subs->maxpacksize = fmt->maxpacksize;
1346 subs->fill_max = 0;
1347
1348 /* we need a sync pipe in async OUT or adaptive IN mode */
1349 /* check the number of EP, since some devices have broken
1350 * descriptors which fool us. if it has only one EP,
1351 * assume it as adaptive-out or sync-in.
1352 */
1353 attr = fmt->ep_attr & EP_ATTR_MASK;
1354 if (((is_playback && attr == EP_ATTR_ASYNC) ||
1355 (! is_playback && attr == EP_ATTR_ADAPTIVE)) &&
1356 altsd->bNumEndpoints >= 2) {
1357 /* check sync-pipe endpoint */
1358 /* ... and check descriptor size before accessing bSynchAddress
1359 because there is a version of the SB Audigy 2 NX firmware lacking
1360 the audio fields in the endpoint descriptors */
1361 if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 ||
1362 (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
1363 get_endpoint(alts, 1)->bSynchAddress != 0)) {
1364 snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
1365 dev->devnum, fmt->iface, fmt->altsetting);
1366 return -EINVAL;
1367 }
1368 ep = get_endpoint(alts, 1)->bEndpointAddress;
1369 if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
1370 (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) ||
1371 (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) {
1372 snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
1373 dev->devnum, fmt->iface, fmt->altsetting);
1374 return -EINVAL;
1375 }
1376 ep &= USB_ENDPOINT_NUMBER_MASK;
1377 if (is_playback)
1378 subs->syncpipe = usb_rcvisocpipe(dev, ep);
1379 else
1380 subs->syncpipe = usb_sndisocpipe(dev, ep);
Clemens Ladisch1149a642005-05-02 08:53:46 +02001381 if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
1382 get_endpoint(alts, 1)->bRefresh >= 1 &&
1383 get_endpoint(alts, 1)->bRefresh <= 9)
1384 subs->syncinterval = get_endpoint(alts, 1)->bRefresh;
Clemens Ladisch604cf492005-05-17 09:15:27 +02001385 else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
Clemens Ladisch1149a642005-05-02 08:53:46 +02001386 subs->syncinterval = 1;
Clemens Ladisch604cf492005-05-17 09:15:27 +02001387 else if (get_endpoint(alts, 1)->bInterval >= 1 &&
1388 get_endpoint(alts, 1)->bInterval <= 16)
1389 subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1;
1390 else
1391 subs->syncinterval = 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001392 }
1393
1394 /* always fill max packet size */
1395 if (fmt->attributes & EP_CS_ATTR_FILL_MAX)
1396 subs->fill_max = 1;
1397
1398 if ((err = init_usb_pitch(dev, subs->interface, alts, fmt)) < 0)
1399 return err;
1400
1401 subs->cur_audiofmt = fmt;
1402
1403#if 0
1404 printk("setting done: format = %d, rate = %d, channels = %d\n",
1405 fmt->format, fmt->rate, fmt->channels);
1406 printk(" datapipe = 0x%0x, syncpipe = 0x%0x\n",
1407 subs->datapipe, subs->syncpipe);
1408#endif
1409
1410 return 0;
1411}
1412
1413/*
1414 * hw_params callback
1415 *
1416 * allocate a buffer and set the given audio format.
1417 *
1418 * so far we use a physically linear buffer although packetize transfer
1419 * doesn't need a continuous area.
1420 * if sg buffer is supported on the later version of alsa, we'll follow
1421 * that.
1422 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01001423static int snd_usb_hw_params(struct snd_pcm_substream *substream,
1424 struct snd_pcm_hw_params *hw_params)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425{
John Daiker88518272006-12-28 13:55:05 +01001426 struct snd_usb_substream *subs = substream->runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427 struct audioformat *fmt;
1428 unsigned int channels, rate, format;
1429 int ret, changed;
1430
Clemens Ladisch6207e512005-08-15 08:35:25 +02001431 ret = snd_pcm_alloc_vmalloc_buffer(substream,
1432 params_buffer_bytes(hw_params));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433 if (ret < 0)
1434 return ret;
1435
1436 format = params_format(hw_params);
1437 rate = params_rate(hw_params);
1438 channels = params_channels(hw_params);
1439 fmt = find_format(subs, format, rate, channels);
1440 if (! fmt) {
Jaroslav Kysela21a34792006-01-13 09:12:11 +01001441 snd_printd(KERN_DEBUG "cannot set format: format = 0x%x, rate = %d, channels = %d\n",
1442 format, rate, channels);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443 return -EINVAL;
1444 }
1445
1446 changed = subs->cur_audiofmt != fmt ||
1447 subs->period_bytes != params_period_bytes(hw_params) ||
1448 subs->cur_rate != rate;
1449 if ((ret = set_format(subs, fmt)) < 0)
1450 return ret;
1451
1452 if (subs->cur_rate != rate) {
1453 struct usb_host_interface *alts;
1454 struct usb_interface *iface;
1455 iface = usb_ifnum_to_if(subs->dev, fmt->iface);
1456 alts = &iface->altsetting[fmt->altset_idx];
1457 ret = init_usb_sample_rate(subs->dev, subs->interface, alts, fmt, rate);
1458 if (ret < 0)
1459 return ret;
1460 subs->cur_rate = rate;
1461 }
1462
1463 if (changed) {
1464 /* format changed */
1465 release_substream_urbs(subs, 0);
1466 /* influenced: period_bytes, channels, rate, format, */
1467 ret = init_substream_urbs(subs, params_period_bytes(hw_params),
1468 params_rate(hw_params),
1469 snd_pcm_format_physical_width(params_format(hw_params)) * params_channels(hw_params));
1470 }
1471
1472 return ret;
1473}
1474
1475/*
1476 * hw_free callback
1477 *
1478 * reset the audio format and release the buffer
1479 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01001480static int snd_usb_hw_free(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481{
John Daiker88518272006-12-28 13:55:05 +01001482 struct snd_usb_substream *subs = substream->runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001483
1484 subs->cur_audiofmt = NULL;
1485 subs->cur_rate = 0;
1486 subs->period_bytes = 0;
Takashi Iwaide1b8b92006-11-08 15:41:29 +01001487 if (!subs->stream->chip->shutdown)
1488 release_substream_urbs(subs, 0);
Clemens Ladisch6207e512005-08-15 08:35:25 +02001489 return snd_pcm_free_vmalloc_buffer(substream);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001490}
1491
1492/*
1493 * prepare callback
1494 *
1495 * only a few subtle things...
1496 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01001497static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001498{
Takashi Iwai86e07d32005-11-17 15:08:02 +01001499 struct snd_pcm_runtime *runtime = substream->runtime;
1500 struct snd_usb_substream *subs = runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501
1502 if (! subs->cur_audiofmt) {
1503 snd_printk(KERN_ERR "usbaudio: no format is specified!\n");
1504 return -ENXIO;
1505 }
1506
1507 /* some unit conversions in runtime */
1508 subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize);
1509 subs->curframesize = bytes_to_frames(runtime, subs->curpacksize);
1510
1511 /* reset the pointer */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001512 subs->hwptr_done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001513 subs->transfer_done = 0;
1514 subs->phase = 0;
1515
1516 /* clear urbs (to be sure) */
1517 deactivate_urbs(subs, 0, 1);
1518 wait_clear_urbs(subs);
1519
Clemens Ladischb55bbf02005-11-02 11:32:52 +01001520 /* for playback, submit the URBs now; otherwise, the first hwptr_done
1521 * updates for all URBs would happen at the same time when starting */
1522 if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
Clemens Ladische4f8e652006-10-04 13:42:57 +02001523 subs->ops.prepare = prepare_nodata_playback_urb;
Clemens Ladischb55bbf02005-11-02 11:32:52 +01001524 return start_urbs(subs, runtime);
1525 } else
1526 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527}
1528
Clemens Ladisch1700f302006-10-04 13:41:25 +02001529static struct snd_pcm_hardware snd_usb_hardware =
Linus Torvalds1da177e2005-04-16 15:20:36 -07001530{
Clemens Ladisch49045d32005-09-05 10:31:05 +02001531 .info = SNDRV_PCM_INFO_MMAP |
1532 SNDRV_PCM_INFO_MMAP_VALID |
1533 SNDRV_PCM_INFO_BATCH |
1534 SNDRV_PCM_INFO_INTERLEAVED |
Clemens Ladische4f8e652006-10-04 13:42:57 +02001535 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1536 SNDRV_PCM_INFO_PAUSE,
Clemens Ladischd31cbbf2005-09-26 09:59:57 +02001537 .buffer_bytes_max = 1024 * 1024,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538 .period_bytes_min = 64,
Clemens Ladischd31cbbf2005-09-26 09:59:57 +02001539 .period_bytes_max = 512 * 1024,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001540 .periods_min = 2,
1541 .periods_max = 1024,
1542};
1543
1544/*
1545 * h/w constraints
1546 */
1547
1548#ifdef HW_CONST_DEBUG
1549#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
1550#else
1551#define hwc_debug(fmt, args...) /**/
1552#endif
1553
Takashi Iwai86e07d32005-11-17 15:08:02 +01001554static int hw_check_valid_format(struct snd_pcm_hw_params *params, struct audioformat *fp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555{
Takashi Iwai86e07d32005-11-17 15:08:02 +01001556 struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
1557 struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
1558 struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001559
1560 /* check the format */
1561 if (! snd_mask_test(fmts, fp->format)) {
1562 hwc_debug(" > check: no supported format %d\n", fp->format);
1563 return 0;
1564 }
1565 /* check the channels */
1566 if (fp->channels < ct->min || fp->channels > ct->max) {
1567 hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max);
1568 return 0;
1569 }
1570 /* check the rate is within the range */
1571 if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) {
1572 hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max);
1573 return 0;
1574 }
1575 if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) {
1576 hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min);
1577 return 0;
1578 }
1579 return 1;
1580}
1581
Takashi Iwai86e07d32005-11-17 15:08:02 +01001582static int hw_rule_rate(struct snd_pcm_hw_params *params,
1583 struct snd_pcm_hw_rule *rule)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001584{
Takashi Iwai86e07d32005-11-17 15:08:02 +01001585 struct snd_usb_substream *subs = rule->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001586 struct list_head *p;
Takashi Iwai86e07d32005-11-17 15:08:02 +01001587 struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001588 unsigned int rmin, rmax;
1589 int changed;
1590
1591 hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max);
1592 changed = 0;
1593 rmin = rmax = 0;
1594 list_for_each(p, &subs->fmt_list) {
1595 struct audioformat *fp;
1596 fp = list_entry(p, struct audioformat, list);
1597 if (! hw_check_valid_format(params, fp))
1598 continue;
1599 if (changed++) {
1600 if (rmin > fp->rate_min)
1601 rmin = fp->rate_min;
1602 if (rmax < fp->rate_max)
1603 rmax = fp->rate_max;
1604 } else {
1605 rmin = fp->rate_min;
1606 rmax = fp->rate_max;
1607 }
1608 }
1609
1610 if (! changed) {
1611 hwc_debug(" --> get empty\n");
1612 it->empty = 1;
1613 return -EINVAL;
1614 }
1615
1616 changed = 0;
1617 if (it->min < rmin) {
1618 it->min = rmin;
1619 it->openmin = 0;
1620 changed = 1;
1621 }
1622 if (it->max > rmax) {
1623 it->max = rmax;
1624 it->openmax = 0;
1625 changed = 1;
1626 }
1627 if (snd_interval_checkempty(it)) {
1628 it->empty = 1;
1629 return -EINVAL;
1630 }
1631 hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
1632 return changed;
1633}
1634
1635
Takashi Iwai86e07d32005-11-17 15:08:02 +01001636static int hw_rule_channels(struct snd_pcm_hw_params *params,
1637 struct snd_pcm_hw_rule *rule)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001638{
Takashi Iwai86e07d32005-11-17 15:08:02 +01001639 struct snd_usb_substream *subs = rule->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001640 struct list_head *p;
Takashi Iwai86e07d32005-11-17 15:08:02 +01001641 struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642 unsigned int rmin, rmax;
1643 int changed;
1644
1645 hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max);
1646 changed = 0;
1647 rmin = rmax = 0;
1648 list_for_each(p, &subs->fmt_list) {
1649 struct audioformat *fp;
1650 fp = list_entry(p, struct audioformat, list);
1651 if (! hw_check_valid_format(params, fp))
1652 continue;
1653 if (changed++) {
1654 if (rmin > fp->channels)
1655 rmin = fp->channels;
1656 if (rmax < fp->channels)
1657 rmax = fp->channels;
1658 } else {
1659 rmin = fp->channels;
1660 rmax = fp->channels;
1661 }
1662 }
1663
1664 if (! changed) {
1665 hwc_debug(" --> get empty\n");
1666 it->empty = 1;
1667 return -EINVAL;
1668 }
1669
1670 changed = 0;
1671 if (it->min < rmin) {
1672 it->min = rmin;
1673 it->openmin = 0;
1674 changed = 1;
1675 }
1676 if (it->max > rmax) {
1677 it->max = rmax;
1678 it->openmax = 0;
1679 changed = 1;
1680 }
1681 if (snd_interval_checkempty(it)) {
1682 it->empty = 1;
1683 return -EINVAL;
1684 }
1685 hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
1686 return changed;
1687}
1688
Takashi Iwai86e07d32005-11-17 15:08:02 +01001689static int hw_rule_format(struct snd_pcm_hw_params *params,
1690 struct snd_pcm_hw_rule *rule)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691{
Takashi Iwai86e07d32005-11-17 15:08:02 +01001692 struct snd_usb_substream *subs = rule->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001693 struct list_head *p;
Takashi Iwai86e07d32005-11-17 15:08:02 +01001694 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001695 u64 fbits;
1696 u32 oldbits[2];
1697 int changed;
1698
1699 hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]);
1700 fbits = 0;
1701 list_for_each(p, &subs->fmt_list) {
1702 struct audioformat *fp;
1703 fp = list_entry(p, struct audioformat, list);
1704 if (! hw_check_valid_format(params, fp))
1705 continue;
1706 fbits |= (1ULL << fp->format);
1707 }
1708
1709 oldbits[0] = fmt->bits[0];
1710 oldbits[1] = fmt->bits[1];
1711 fmt->bits[0] &= (u32)fbits;
1712 fmt->bits[1] &= (u32)(fbits >> 32);
1713 if (! fmt->bits[0] && ! fmt->bits[1]) {
1714 hwc_debug(" --> get empty\n");
1715 return -EINVAL;
1716 }
1717 changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]);
1718 hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed);
1719 return changed;
1720}
1721
1722#define MAX_MASK 64
1723
1724/*
1725 * check whether the registered audio formats need special hw-constraints
1726 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01001727static int check_hw_params_convention(struct snd_usb_substream *subs)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001728{
1729 int i;
1730 u32 *channels;
1731 u32 *rates;
1732 u32 cmaster, rmaster;
1733 u32 rate_min = 0, rate_max = 0;
1734 struct list_head *p;
1735 int err = 1;
1736
1737 channels = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL);
1738 rates = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL);
1739
1740 list_for_each(p, &subs->fmt_list) {
1741 struct audioformat *f;
1742 f = list_entry(p, struct audioformat, list);
1743 /* unconventional channels? */
1744 if (f->channels > 32)
1745 goto __out;
1746 /* continuous rate min/max matches? */
1747 if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) {
1748 if (rate_min && f->rate_min != rate_min)
1749 goto __out;
1750 if (rate_max && f->rate_max != rate_max)
1751 goto __out;
1752 rate_min = f->rate_min;
1753 rate_max = f->rate_max;
1754 }
1755 /* combination of continuous rates and fixed rates? */
1756 if (rates[f->format] & SNDRV_PCM_RATE_CONTINUOUS) {
1757 if (f->rates != rates[f->format])
1758 goto __out;
1759 }
1760 if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) {
1761 if (rates[f->format] && rates[f->format] != f->rates)
1762 goto __out;
1763 }
1764 channels[f->format] |= (1 << f->channels);
1765 rates[f->format] |= f->rates;
Luke Rossa79eee82006-08-29 10:46:32 +02001766 /* needs knot? */
Clemens Ladisch918f3a02007-08-13 17:40:54 +02001767 if (f->rates & SNDRV_PCM_RATE_KNOT)
Luke Rossa79eee82006-08-29 10:46:32 +02001768 goto __out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001769 }
1770 /* check whether channels and rates match for all formats */
1771 cmaster = rmaster = 0;
1772 for (i = 0; i < MAX_MASK; i++) {
1773 if (cmaster != channels[i] && cmaster && channels[i])
1774 goto __out;
1775 if (rmaster != rates[i] && rmaster && rates[i])
1776 goto __out;
1777 if (channels[i])
1778 cmaster = channels[i];
1779 if (rates[i])
1780 rmaster = rates[i];
1781 }
1782 /* check whether channels match for all distinct rates */
1783 memset(channels, 0, MAX_MASK * sizeof(u32));
1784 list_for_each(p, &subs->fmt_list) {
1785 struct audioformat *f;
1786 f = list_entry(p, struct audioformat, list);
1787 if (f->rates & SNDRV_PCM_RATE_CONTINUOUS)
1788 continue;
1789 for (i = 0; i < 32; i++) {
1790 if (f->rates & (1 << i))
1791 channels[i] |= (1 << f->channels);
1792 }
1793 }
1794 cmaster = 0;
1795 for (i = 0; i < 32; i++) {
1796 if (cmaster != channels[i] && cmaster && channels[i])
1797 goto __out;
1798 if (channels[i])
1799 cmaster = channels[i];
1800 }
1801 err = 0;
1802
1803 __out:
1804 kfree(channels);
1805 kfree(rates);
1806 return err;
1807}
1808
Luke Rossa79eee82006-08-29 10:46:32 +02001809/*
1810 * If the device supports unusual bit rates, does the request meet these?
1811 */
1812static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime,
1813 struct snd_usb_substream *subs)
1814{
Takashi Iwai8fec5602007-02-01 11:50:56 +01001815 struct audioformat *fp;
1816 int count = 0, needs_knot = 0;
Luke Rossa79eee82006-08-29 10:46:32 +02001817 int err;
1818
Takashi Iwai8fec5602007-02-01 11:50:56 +01001819 list_for_each_entry(fp, &subs->fmt_list, list) {
1820 if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)
1821 return 0;
1822 count += fp->nr_rates;
Clemens Ladisch918f3a02007-08-13 17:40:54 +02001823 if (fp->rates & SNDRV_PCM_RATE_KNOT)
Takashi Iwai8fec5602007-02-01 11:50:56 +01001824 needs_knot = 1;
Luke Rossa79eee82006-08-29 10:46:32 +02001825 }
Takashi Iwai8fec5602007-02-01 11:50:56 +01001826 if (!needs_knot)
1827 return 0;
1828
1829 subs->rate_list.count = count;
1830 subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL);
1831 subs->rate_list.mask = 0;
1832 count = 0;
1833 list_for_each_entry(fp, &subs->fmt_list, list) {
1834 int i;
1835 for (i = 0; i < fp->nr_rates; i++)
1836 subs->rate_list.list[count++] = fp->rate_table[i];
1837 }
1838 err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1839 &subs->rate_list);
1840 if (err < 0)
1841 return err;
Luke Rossa79eee82006-08-29 10:46:32 +02001842
1843 return 0;
1844}
1845
Linus Torvalds1da177e2005-04-16 15:20:36 -07001846
1847/*
1848 * set up the runtime hardware information.
1849 */
1850
Takashi Iwai86e07d32005-11-17 15:08:02 +01001851static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001852{
1853 struct list_head *p;
1854 int err;
1855
1856 runtime->hw.formats = subs->formats;
1857
1858 runtime->hw.rate_min = 0x7fffffff;
1859 runtime->hw.rate_max = 0;
1860 runtime->hw.channels_min = 256;
1861 runtime->hw.channels_max = 0;
1862 runtime->hw.rates = 0;
1863 /* check min/max rates and channels */
1864 list_for_each(p, &subs->fmt_list) {
1865 struct audioformat *fp;
1866 fp = list_entry(p, struct audioformat, list);
1867 runtime->hw.rates |= fp->rates;
1868 if (runtime->hw.rate_min > fp->rate_min)
1869 runtime->hw.rate_min = fp->rate_min;
1870 if (runtime->hw.rate_max < fp->rate_max)
1871 runtime->hw.rate_max = fp->rate_max;
1872 if (runtime->hw.channels_min > fp->channels)
1873 runtime->hw.channels_min = fp->channels;
1874 if (runtime->hw.channels_max < fp->channels)
1875 runtime->hw.channels_max = fp->channels;
1876 if (fp->fmt_type == USB_FORMAT_TYPE_II && fp->frame_size > 0) {
1877 /* FIXME: there might be more than one audio formats... */
1878 runtime->hw.period_bytes_min = runtime->hw.period_bytes_max =
1879 fp->frame_size;
1880 }
1881 }
1882
1883 /* set the period time minimum 1ms */
Takashi Iwai81c48992007-05-03 12:26:14 +02001884 /* FIXME: high-speed mode allows 125us minimum period, but many parts
1885 * in the current code assume the 1ms period.
1886 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001887 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
Takashi Iwai81c48992007-05-03 12:26:14 +02001888 1000 * MIN_PACKS_URB,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001889 /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX);
1890
1891 if (check_hw_params_convention(subs)) {
1892 hwc_debug("setting extra hw constraints...\n");
1893 if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1894 hw_rule_rate, subs,
1895 SNDRV_PCM_HW_PARAM_FORMAT,
1896 SNDRV_PCM_HW_PARAM_CHANNELS,
1897 -1)) < 0)
1898 return err;
1899 if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1900 hw_rule_channels, subs,
1901 SNDRV_PCM_HW_PARAM_FORMAT,
1902 SNDRV_PCM_HW_PARAM_RATE,
1903 -1)) < 0)
1904 return err;
1905 if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
1906 hw_rule_format, subs,
1907 SNDRV_PCM_HW_PARAM_RATE,
1908 SNDRV_PCM_HW_PARAM_CHANNELS,
1909 -1)) < 0)
1910 return err;
Luke Rossa79eee82006-08-29 10:46:32 +02001911 if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0)
1912 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001913 }
1914 return 0;
1915}
1916
Clemens Ladisch1700f302006-10-04 13:41:25 +02001917static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001918{
Takashi Iwai86e07d32005-11-17 15:08:02 +01001919 struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
1920 struct snd_pcm_runtime *runtime = substream->runtime;
1921 struct snd_usb_substream *subs = &as->substream[direction];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001922
1923 subs->interface = -1;
1924 subs->format = 0;
Clemens Ladisch1700f302006-10-04 13:41:25 +02001925 runtime->hw = snd_usb_hardware;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001926 runtime->private_data = subs;
1927 subs->pcm_substream = substream;
1928 return setup_hw_info(runtime, subs);
1929}
1930
Takashi Iwai86e07d32005-11-17 15:08:02 +01001931static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001932{
Takashi Iwai86e07d32005-11-17 15:08:02 +01001933 struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
1934 struct snd_usb_substream *subs = &as->substream[direction];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001935
1936 if (subs->interface >= 0) {
1937 usb_set_interface(subs->dev, subs->interface, 0);
1938 subs->interface = -1;
1939 }
1940 subs->pcm_substream = NULL;
1941 return 0;
1942}
1943
Takashi Iwai86e07d32005-11-17 15:08:02 +01001944static int snd_usb_playback_open(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001945{
Clemens Ladisch1700f302006-10-04 13:41:25 +02001946 return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001947}
1948
Takashi Iwai86e07d32005-11-17 15:08:02 +01001949static int snd_usb_playback_close(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001950{
1951 return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK);
1952}
1953
Takashi Iwai86e07d32005-11-17 15:08:02 +01001954static int snd_usb_capture_open(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001955{
Clemens Ladisch1700f302006-10-04 13:41:25 +02001956 return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001957}
1958
Takashi Iwai86e07d32005-11-17 15:08:02 +01001959static int snd_usb_capture_close(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960{
1961 return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE);
1962}
1963
Takashi Iwai86e07d32005-11-17 15:08:02 +01001964static struct snd_pcm_ops snd_usb_playback_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965 .open = snd_usb_playback_open,
1966 .close = snd_usb_playback_close,
1967 .ioctl = snd_pcm_lib_ioctl,
1968 .hw_params = snd_usb_hw_params,
1969 .hw_free = snd_usb_hw_free,
1970 .prepare = snd_usb_pcm_prepare,
Clemens Ladischb55bbf02005-11-02 11:32:52 +01001971 .trigger = snd_usb_pcm_playback_trigger,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972 .pointer = snd_usb_pcm_pointer,
Clemens Ladisch6207e512005-08-15 08:35:25 +02001973 .page = snd_pcm_get_vmalloc_page,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974};
1975
Takashi Iwai86e07d32005-11-17 15:08:02 +01001976static struct snd_pcm_ops snd_usb_capture_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977 .open = snd_usb_capture_open,
1978 .close = snd_usb_capture_close,
1979 .ioctl = snd_pcm_lib_ioctl,
1980 .hw_params = snd_usb_hw_params,
1981 .hw_free = snd_usb_hw_free,
1982 .prepare = snd_usb_pcm_prepare,
Clemens Ladischb55bbf02005-11-02 11:32:52 +01001983 .trigger = snd_usb_pcm_capture_trigger,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001984 .pointer = snd_usb_pcm_pointer,
Clemens Ladisch6207e512005-08-15 08:35:25 +02001985 .page = snd_pcm_get_vmalloc_page,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001986};
1987
1988
1989
1990/*
1991 * helper functions
1992 */
1993
1994/*
1995 * combine bytes and get an integer value
1996 */
1997unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size)
1998{
1999 switch (size) {
2000 case 1: return *bytes;
2001 case 2: return combine_word(bytes);
2002 case 3: return combine_triple(bytes);
2003 case 4: return combine_quad(bytes);
2004 default: return 0;
2005 }
2006}
2007
2008/*
2009 * parse descriptor buffer and return the pointer starting the given
2010 * descriptor type.
2011 */
2012void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype)
2013{
2014 u8 *p, *end, *next;
2015
2016 p = descstart;
2017 end = p + desclen;
2018 for (; p < end;) {
2019 if (p[0] < 2)
2020 return NULL;
2021 next = p + p[0];
2022 if (next > end)
2023 return NULL;
2024 if (p[1] == dtype && (!after || (void *)p > after)) {
2025 return p;
2026 }
2027 p = next;
2028 }
2029 return NULL;
2030}
2031
2032/*
2033 * find a class-specified interface descriptor with the given subtype.
2034 */
2035void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype)
2036{
2037 unsigned char *p = after;
2038
2039 while ((p = snd_usb_find_desc(buffer, buflen, p,
2040 USB_DT_CS_INTERFACE)) != NULL) {
2041 if (p[0] >= 3 && p[2] == dsubtype)
2042 return p;
2043 }
2044 return NULL;
2045}
2046
2047/*
2048 * Wrapper for usb_control_msg().
2049 * Allocates a temp buffer to prevent dmaing from/to the stack.
2050 */
2051int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
2052 __u8 requesttype, __u16 value, __u16 index, void *data,
2053 __u16 size, int timeout)
2054{
2055 int err;
2056 void *buf = NULL;
2057
2058 if (size > 0) {
Alexey Dobriyan52978be2006-09-30 23:27:21 -07002059 buf = kmemdup(data, size, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002060 if (!buf)
2061 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002062 }
2063 err = usb_control_msg(dev, pipe, request, requesttype,
2064 value, index, buf, size, timeout);
2065 if (size > 0) {
2066 memcpy(data, buf, size);
2067 kfree(buf);
2068 }
2069 return err;
2070}
2071
2072
2073/*
2074 * entry point for linux usb interface
2075 */
2076
2077static int usb_audio_probe(struct usb_interface *intf,
2078 const struct usb_device_id *id);
2079static void usb_audio_disconnect(struct usb_interface *intf);
2080
2081static struct usb_device_id usb_audio_ids [] = {
2082#include "usbquirks.h"
2083 { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
2084 .bInterfaceClass = USB_CLASS_AUDIO,
2085 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL },
2086 { } /* Terminating entry */
2087};
2088
2089MODULE_DEVICE_TABLE (usb, usb_audio_ids);
2090
2091static struct usb_driver usb_audio_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002092 .name = "snd-usb-audio",
2093 .probe = usb_audio_probe,
2094 .disconnect = usb_audio_disconnect,
2095 .id_table = usb_audio_ids,
2096};
2097
2098
Takashi Iwai727f3172006-08-04 19:08:03 +02002099#if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS)
Jaroslav Kysela21a34792006-01-13 09:12:11 +01002100
Linus Torvalds1da177e2005-04-16 15:20:36 -07002101/*
2102 * proc interface for list the supported pcm formats
2103 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002104static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105{
2106 struct list_head *p;
2107 static char *sync_types[4] = {
2108 "NONE", "ASYNC", "ADAPTIVE", "SYNC"
2109 };
2110
2111 list_for_each(p, &subs->fmt_list) {
2112 struct audioformat *fp;
2113 fp = list_entry(p, struct audioformat, list);
2114 snd_iprintf(buffer, " Interface %d\n", fp->iface);
2115 snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
Jaroslav Kysela3f72a302006-01-18 11:50:40 +01002116 snd_iprintf(buffer, " Format: 0x%x\n", fp->format);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002117 snd_iprintf(buffer, " Channels: %d\n", fp->channels);
2118 snd_iprintf(buffer, " Endpoint: %d %s (%s)\n",
2119 fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
2120 fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
2121 sync_types[(fp->ep_attr & EP_ATTR_MASK) >> 2]);
2122 if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
2123 snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",
2124 fp->rate_min, fp->rate_max);
2125 } else {
2126 unsigned int i;
2127 snd_iprintf(buffer, " Rates: ");
2128 for (i = 0; i < fp->nr_rates; i++) {
2129 if (i > 0)
2130 snd_iprintf(buffer, ", ");
2131 snd_iprintf(buffer, "%d", fp->rate_table[i]);
2132 }
2133 snd_iprintf(buffer, "\n");
2134 }
2135 // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
2136 // snd_iprintf(buffer, " EP Attribute = 0x%x\n", fp->attributes);
2137 }
2138}
2139
Takashi Iwai86e07d32005-11-17 15:08:02 +01002140static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141{
2142 if (subs->running) {
2143 unsigned int i;
2144 snd_iprintf(buffer, " Status: Running\n");
2145 snd_iprintf(buffer, " Interface = %d\n", subs->interface);
2146 snd_iprintf(buffer, " Altset = %d\n", subs->format);
2147 snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs);
2148 for (i = 0; i < subs->nurbs; i++)
2149 snd_iprintf(buffer, "%d ", subs->dataurb[i].packets);
2150 snd_iprintf(buffer, "]\n");
2151 snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize);
Clemens Ladisch08fe1582005-04-22 15:33:01 +02002152 snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153 snd_usb_get_speed(subs->dev) == USB_SPEED_FULL
2154 ? get_full_speed_hz(subs->freqm)
Clemens Ladisch08fe1582005-04-22 15:33:01 +02002155 : get_high_speed_hz(subs->freqm),
2156 subs->freqm >> 16, subs->freqm & 0xffff);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157 } else {
2158 snd_iprintf(buffer, " Status: Stop\n");
2159 }
2160}
2161
Takashi Iwai86e07d32005-11-17 15:08:02 +01002162static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002163{
Takashi Iwai86e07d32005-11-17 15:08:02 +01002164 struct snd_usb_stream *stream = entry->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165
2166 snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
2167
2168 if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
2169 snd_iprintf(buffer, "\nPlayback:\n");
2170 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
2171 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
2172 }
2173 if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
2174 snd_iprintf(buffer, "\nCapture:\n");
2175 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
2176 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
2177 }
2178}
2179
Takashi Iwai86e07d32005-11-17 15:08:02 +01002180static void proc_pcm_format_add(struct snd_usb_stream *stream)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002181{
Takashi Iwai86e07d32005-11-17 15:08:02 +01002182 struct snd_info_entry *entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002183 char name[32];
Takashi Iwai86e07d32005-11-17 15:08:02 +01002184 struct snd_card *card = stream->chip->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002185
2186 sprintf(name, "stream%d", stream->pcm_index);
2187 if (! snd_card_proc_new(card, name, &entry))
Takashi Iwaibf850202006-04-28 15:13:41 +02002188 snd_info_set_text_ops(entry, stream, proc_pcm_format_read);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002189}
2190
Jaroslav Kysela21a34792006-01-13 09:12:11 +01002191#else
2192
2193static inline void proc_pcm_format_add(struct snd_usb_stream *stream)
2194{
2195}
2196
2197#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002198
2199/*
2200 * initialize the substream instance.
2201 */
2202
Takashi Iwai86e07d32005-11-17 15:08:02 +01002203static void init_substream(struct snd_usb_stream *as, int stream, struct audioformat *fp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002204{
Takashi Iwai86e07d32005-11-17 15:08:02 +01002205 struct snd_usb_substream *subs = &as->substream[stream];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002206
2207 INIT_LIST_HEAD(&subs->fmt_list);
2208 spin_lock_init(&subs->lock);
2209
2210 subs->stream = as;
2211 subs->direction = stream;
2212 subs->dev = as->chip->dev;
2213 if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
2214 subs->ops = audio_urb_ops[stream];
2215 else
2216 subs->ops = audio_urb_ops_high_speed[stream];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002217 snd_pcm_set_ops(as->pcm, stream,
2218 stream == SNDRV_PCM_STREAM_PLAYBACK ?
2219 &snd_usb_playback_ops : &snd_usb_capture_ops);
2220
2221 list_add_tail(&fp->list, &subs->fmt_list);
2222 subs->formats |= 1ULL << fp->format;
2223 subs->endpoint = fp->endpoint;
2224 subs->num_formats++;
2225 subs->fmt_type = fp->fmt_type;
2226}
2227
2228
2229/*
2230 * free a substream
2231 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002232static void free_substream(struct snd_usb_substream *subs)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002233{
2234 struct list_head *p, *n;
2235
2236 if (! subs->num_formats)
2237 return; /* not initialized */
2238 list_for_each_safe(p, n, &subs->fmt_list) {
2239 struct audioformat *fp = list_entry(p, struct audioformat, list);
2240 kfree(fp->rate_table);
2241 kfree(fp);
2242 }
Takashi Iwai8fec5602007-02-01 11:50:56 +01002243 kfree(subs->rate_list.list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002244}
2245
2246
2247/*
2248 * free a usb stream instance
2249 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002250static void snd_usb_audio_stream_free(struct snd_usb_stream *stream)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002251{
2252 free_substream(&stream->substream[0]);
2253 free_substream(&stream->substream[1]);
2254 list_del(&stream->list);
2255 kfree(stream);
2256}
2257
Takashi Iwai86e07d32005-11-17 15:08:02 +01002258static void snd_usb_audio_pcm_free(struct snd_pcm *pcm)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002259{
Takashi Iwai86e07d32005-11-17 15:08:02 +01002260 struct snd_usb_stream *stream = pcm->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002261 if (stream) {
2262 stream->pcm = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002263 snd_usb_audio_stream_free(stream);
2264 }
2265}
2266
2267
2268/*
2269 * add this endpoint to the chip instance.
2270 * if a stream with the same endpoint already exists, append to it.
2271 * if not, create a new pcm stream.
2272 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002273static int add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002274{
2275 struct list_head *p;
Takashi Iwai86e07d32005-11-17 15:08:02 +01002276 struct snd_usb_stream *as;
2277 struct snd_usb_substream *subs;
2278 struct snd_pcm *pcm;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002279 int err;
2280
2281 list_for_each(p, &chip->pcm_list) {
Takashi Iwai86e07d32005-11-17 15:08:02 +01002282 as = list_entry(p, struct snd_usb_stream, list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002283 if (as->fmt_type != fp->fmt_type)
2284 continue;
2285 subs = &as->substream[stream];
2286 if (! subs->endpoint)
2287 continue;
2288 if (subs->endpoint == fp->endpoint) {
2289 list_add_tail(&fp->list, &subs->fmt_list);
2290 subs->num_formats++;
2291 subs->formats |= 1ULL << fp->format;
2292 return 0;
2293 }
2294 }
2295 /* look for an empty stream */
2296 list_for_each(p, &chip->pcm_list) {
Takashi Iwai86e07d32005-11-17 15:08:02 +01002297 as = list_entry(p, struct snd_usb_stream, list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002298 if (as->fmt_type != fp->fmt_type)
2299 continue;
2300 subs = &as->substream[stream];
2301 if (subs->endpoint)
2302 continue;
2303 err = snd_pcm_new_stream(as->pcm, stream, 1);
2304 if (err < 0)
2305 return err;
2306 init_substream(as, stream, fp);
2307 return 0;
2308 }
2309
2310 /* create a new pcm */
Panagiotis Issaris59feddb2006-07-25 15:28:03 +02002311 as = kzalloc(sizeof(*as), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002312 if (! as)
2313 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002314 as->pcm_index = chip->pcm_devs;
2315 as->chip = chip;
2316 as->fmt_type = fp->fmt_type;
2317 err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs,
2318 stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0,
2319 stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1,
2320 &pcm);
2321 if (err < 0) {
2322 kfree(as);
2323 return err;
2324 }
2325 as->pcm = pcm;
2326 pcm->private_data = as;
2327 pcm->private_free = snd_usb_audio_pcm_free;
2328 pcm->info_flags = 0;
2329 if (chip->pcm_devs > 0)
2330 sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs);
2331 else
2332 strcpy(pcm->name, "USB Audio");
2333
2334 init_substream(as, stream, fp);
2335
2336 list_add(&as->list, &chip->pcm_list);
2337 chip->pcm_devs++;
2338
2339 proc_pcm_format_add(as);
2340
2341 return 0;
2342}
2343
2344
2345/*
2346 * check if the device uses big-endian samples
2347 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002348static int is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002349{
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002350 switch (chip->usb_id) {
2351 case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
2352 if (fp->endpoint & USB_DIR_IN)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002353 return 1;
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002354 break;
2355 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
Thibault Le Meurf8c78b82007-07-12 11:26:35 +02002356 if (device_setup[chip->index] == 0x00 ||
2357 fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3)
2358 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002359 }
2360 return 0;
2361}
2362
2363/*
2364 * parse the audio format type I descriptor
2365 * and returns the corresponding pcm format
2366 *
2367 * @dev: usb device
2368 * @fp: audioformat record
2369 * @format: the format tag (wFormatTag)
2370 * @fmt: the format type descriptor
2371 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002372static int parse_audio_format_i_type(struct snd_usb_audio *chip, struct audioformat *fp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002373 int format, unsigned char *fmt)
2374{
2375 int pcm_format;
2376 int sample_width, sample_bytes;
2377
2378 /* FIXME: correct endianess and sign? */
2379 pcm_format = -1;
2380 sample_width = fmt[6];
2381 sample_bytes = fmt[5];
2382 switch (format) {
2383 case 0: /* some devices don't define this correctly... */
2384 snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002385 chip->dev->devnum, fp->iface, fp->altsetting);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002386 /* fall-through */
2387 case USB_AUDIO_FORMAT_PCM:
2388 if (sample_width > sample_bytes * 8) {
2389 snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002390 chip->dev->devnum, fp->iface, fp->altsetting,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002391 sample_width, sample_bytes);
2392 }
2393 /* check the format byte size */
2394 switch (fmt[5]) {
2395 case 1:
2396 pcm_format = SNDRV_PCM_FORMAT_S8;
2397 break;
2398 case 2:
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002399 if (is_big_endian_format(chip, fp))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002400 pcm_format = SNDRV_PCM_FORMAT_S16_BE; /* grrr, big endian!! */
2401 else
2402 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
2403 break;
2404 case 3:
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002405 if (is_big_endian_format(chip, fp))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002406 pcm_format = SNDRV_PCM_FORMAT_S24_3BE; /* grrr, big endian!! */
2407 else
2408 pcm_format = SNDRV_PCM_FORMAT_S24_3LE;
2409 break;
2410 case 4:
2411 pcm_format = SNDRV_PCM_FORMAT_S32_LE;
2412 break;
2413 default:
2414 snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002415 chip->dev->devnum, fp->iface,
2416 fp->altsetting, sample_width, sample_bytes);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002417 break;
2418 }
2419 break;
2420 case USB_AUDIO_FORMAT_PCM8:
2421 /* Dallas DS4201 workaround */
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002422 if (chip->usb_id == USB_ID(0x04fa, 0x4201))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002423 pcm_format = SNDRV_PCM_FORMAT_S8;
2424 else
2425 pcm_format = SNDRV_PCM_FORMAT_U8;
2426 break;
2427 case USB_AUDIO_FORMAT_IEEE_FLOAT:
2428 pcm_format = SNDRV_PCM_FORMAT_FLOAT_LE;
2429 break;
2430 case USB_AUDIO_FORMAT_ALAW:
2431 pcm_format = SNDRV_PCM_FORMAT_A_LAW;
2432 break;
2433 case USB_AUDIO_FORMAT_MU_LAW:
2434 pcm_format = SNDRV_PCM_FORMAT_MU_LAW;
2435 break;
2436 default:
2437 snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002438 chip->dev->devnum, fp->iface, fp->altsetting, format);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002439 break;
2440 }
2441 return pcm_format;
2442}
2443
2444
2445/*
2446 * parse the format descriptor and stores the possible sample rates
2447 * on the audioformat table.
2448 *
2449 * @dev: usb device
2450 * @fp: audioformat record
2451 * @fmt: the format descriptor
2452 * @offset: the start offset of descriptor pointing the rate type
2453 * (7 for type I and II, 8 for type II)
2454 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002455static int parse_audio_format_rates(struct snd_usb_audio *chip, struct audioformat *fp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002456 unsigned char *fmt, int offset)
2457{
2458 int nr_rates = fmt[offset];
Clemens Ladisch918f3a02007-08-13 17:40:54 +02002459
Linus Torvalds1da177e2005-04-16 15:20:36 -07002460 if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
2461 snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002462 chip->dev->devnum, fp->iface, fp->altsetting);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002463 return -1;
2464 }
2465
2466 if (nr_rates) {
2467 /*
2468 * build the rate table and bitmap flags
2469 */
Clemens Ladisch918f3a02007-08-13 17:40:54 +02002470 int r, idx;
Gregor Jasnybeb60112007-01-31 12:27:39 +01002471 unsigned int nonzero_rates = 0;
Clemens Ladisch918f3a02007-08-13 17:40:54 +02002472
Linus Torvalds1da177e2005-04-16 15:20:36 -07002473 fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
2474 if (fp->rate_table == NULL) {
2475 snd_printk(KERN_ERR "cannot malloc\n");
2476 return -1;
2477 }
2478
2479 fp->nr_rates = nr_rates;
2480 fp->rate_min = fp->rate_max = combine_triple(&fmt[8]);
2481 for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
Clemens Ladisch987411b2006-11-20 14:14:39 +01002482 unsigned int rate = combine_triple(&fmt[idx]);
2483 /* C-Media CM6501 mislabels its 96 kHz altsetting */
2484 if (rate == 48000 && nr_rates == 1 &&
2485 chip->usb_id == USB_ID(0x0d8c, 0x0201) &&
2486 fp->altsetting == 5 && fp->maxpacksize == 392)
2487 rate = 96000;
2488 fp->rate_table[r] = rate;
Gregor Jasnybeb60112007-01-31 12:27:39 +01002489 nonzero_rates |= rate;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002490 if (rate < fp->rate_min)
2491 fp->rate_min = rate;
2492 else if (rate > fp->rate_max)
2493 fp->rate_max = rate;
Clemens Ladisch918f3a02007-08-13 17:40:54 +02002494 fp->rates |= snd_pcm_rate_to_rate_bit(rate);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002495 }
Gregor Jasnybeb60112007-01-31 12:27:39 +01002496 if (!nonzero_rates) {
2497 hwc_debug("All rates were zero. Skipping format!\n");
2498 return -1;
2499 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002500 } else {
2501 /* continuous rates */
2502 fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
2503 fp->rate_min = combine_triple(&fmt[offset + 1]);
2504 fp->rate_max = combine_triple(&fmt[offset + 4]);
2505 }
2506 return 0;
2507}
2508
2509/*
2510 * parse the format type I and III descriptors
2511 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002512static int parse_audio_format_i(struct snd_usb_audio *chip, struct audioformat *fp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002513 int format, unsigned char *fmt)
2514{
2515 int pcm_format;
2516
2517 if (fmt[3] == USB_FORMAT_TYPE_III) {
2518 /* FIXME: the format type is really IECxxx
2519 * but we give normal PCM format to get the existing
2520 * apps working...
2521 */
Thibault Le Meurcac19c32007-07-13 11:50:23 +02002522 switch (chip->usb_id) {
2523
2524 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2525 if (device_setup[chip->index] == 0x00 &&
2526 fp->altsetting == 6)
2527 pcm_format = SNDRV_PCM_FORMAT_S16_BE;
2528 else
2529 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
2530 break;
2531 default:
2532 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
2533 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002534 } else {
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002535 pcm_format = parse_audio_format_i_type(chip, fp, format, fmt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002536 if (pcm_format < 0)
2537 return -1;
2538 }
2539 fp->format = pcm_format;
2540 fp->channels = fmt[4];
2541 if (fp->channels < 1) {
2542 snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002543 chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002544 return -1;
2545 }
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002546 return parse_audio_format_rates(chip, fp, fmt, 7);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002547}
2548
2549/*
2550 * prase the format type II descriptor
2551 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002552static int parse_audio_format_ii(struct snd_usb_audio *chip, struct audioformat *fp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002553 int format, unsigned char *fmt)
2554{
2555 int brate, framesize;
2556 switch (format) {
2557 case USB_AUDIO_FORMAT_AC3:
2558 /* FIXME: there is no AC3 format defined yet */
2559 // fp->format = SNDRV_PCM_FORMAT_AC3;
2560 fp->format = SNDRV_PCM_FORMAT_U8; /* temporarily hack to receive byte streams */
2561 break;
2562 case USB_AUDIO_FORMAT_MPEG:
2563 fp->format = SNDRV_PCM_FORMAT_MPEG;
2564 break;
2565 default:
2566 snd_printd(KERN_INFO "%d:%u:%d : unknown format tag 0x%x is detected. processed as MPEG.\n",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002567 chip->dev->devnum, fp->iface, fp->altsetting, format);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002568 fp->format = SNDRV_PCM_FORMAT_MPEG;
2569 break;
2570 }
2571 fp->channels = 1;
2572 brate = combine_word(&fmt[4]); /* fmt[4,5] : wMaxBitRate (in kbps) */
2573 framesize = combine_word(&fmt[6]); /* fmt[6,7]: wSamplesPerFrame */
2574 snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
2575 fp->frame_size = framesize;
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002576 return parse_audio_format_rates(chip, fp, fmt, 8); /* fmt[8..] sample rates */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002577}
2578
Takashi Iwai86e07d32005-11-17 15:08:02 +01002579static int parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002580 int format, unsigned char *fmt, int stream)
2581{
2582 int err;
2583
2584 switch (fmt[3]) {
2585 case USB_FORMAT_TYPE_I:
2586 case USB_FORMAT_TYPE_III:
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002587 err = parse_audio_format_i(chip, fp, format, fmt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002588 break;
2589 case USB_FORMAT_TYPE_II:
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002590 err = parse_audio_format_ii(chip, fp, format, fmt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002591 break;
2592 default:
2593 snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002594 chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002595 return -1;
2596 }
2597 fp->fmt_type = fmt[3];
2598 if (err < 0)
2599 return err;
2600#if 1
Clemens Ladisch33159372006-01-13 08:11:22 +01002601 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002602 /* extigy apparently supports sample rates other than 48k
2603 * but not in ordinary way. so we enable only 48k atm.
2604 */
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002605 if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
Clemens Ladisch33159372006-01-13 08:11:22 +01002606 chip->usb_id == USB_ID(0x041e, 0x3020) ||
2607 chip->usb_id == USB_ID(0x041e, 0x3061)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002608 if (fmt[3] == USB_FORMAT_TYPE_I &&
Clemens Ladisch8c1872d2005-04-28 09:31:53 +02002609 fp->rates != SNDRV_PCM_RATE_48000 &&
2610 fp->rates != SNDRV_PCM_RATE_96000)
Clemens Ladischb4d3f9d2005-06-27 08:18:27 +02002611 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002612 }
2613#endif
2614 return 0;
2615}
2616
Thibault LE MEURe3113342006-03-14 11:44:53 +01002617static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
2618 int iface, int altno);
Takashi Iwai86e07d32005-11-17 15:08:02 +01002619static int parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002620{
2621 struct usb_device *dev;
2622 struct usb_interface *iface;
2623 struct usb_host_interface *alts;
2624 struct usb_interface_descriptor *altsd;
2625 int i, altno, err, stream;
2626 int format;
2627 struct audioformat *fp;
2628 unsigned char *fmt, *csep;
2629
2630 dev = chip->dev;
2631
2632 /* parse the interface's altsettings */
2633 iface = usb_ifnum_to_if(dev, iface_no);
2634 for (i = 0; i < iface->num_altsetting; i++) {
2635 alts = &iface->altsetting[i];
2636 altsd = get_iface_desc(alts);
2637 /* skip invalid one */
2638 if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
2639 altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
2640 (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING &&
2641 altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) ||
2642 altsd->bNumEndpoints < 1 ||
2643 le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0)
2644 continue;
2645 /* must be isochronous */
2646 if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
2647 USB_ENDPOINT_XFER_ISOC)
2648 continue;
2649 /* check direction */
2650 stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ?
2651 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
2652 altno = altsd->bAlternateSetting;
Thibault LE MEURe3113342006-03-14 11:44:53 +01002653
2654 /* audiophile usb: skip altsets incompatible with device_setup
2655 */
2656 if (chip->usb_id == USB_ID(0x0763, 0x2003) &&
2657 audiophile_skip_setting_quirk(chip, iface_no, altno))
2658 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002659
2660 /* get audio formats */
2661 fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, AS_GENERAL);
2662 if (!fmt) {
2663 snd_printk(KERN_ERR "%d:%u:%d : AS_GENERAL descriptor not found\n",
2664 dev->devnum, iface_no, altno);
2665 continue;
2666 }
2667
2668 if (fmt[0] < 7) {
2669 snd_printk(KERN_ERR "%d:%u:%d : invalid AS_GENERAL desc\n",
2670 dev->devnum, iface_no, altno);
2671 continue;
2672 }
2673
2674 format = (fmt[6] << 8) | fmt[5]; /* remember the format value */
2675
2676 /* get format type */
2677 fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, FORMAT_TYPE);
2678 if (!fmt) {
2679 snd_printk(KERN_ERR "%d:%u:%d : no FORMAT_TYPE desc\n",
2680 dev->devnum, iface_no, altno);
2681 continue;
2682 }
2683 if (fmt[0] < 8) {
2684 snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n",
2685 dev->devnum, iface_no, altno);
2686 continue;
2687 }
2688
2689 csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
2690 /* Creamware Noah has this descriptor after the 2nd endpoint */
2691 if (!csep && altsd->bNumEndpoints >= 2)
2692 csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
2693 if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) {
Takashi Iwaif8c75792006-05-18 14:47:03 +02002694 snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
Clemens Ladischfaf8d112006-05-18 09:35:15 +02002695 " class specific endpoint descriptor\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002696 dev->devnum, iface_no, altno);
Clemens Ladischfaf8d112006-05-18 09:35:15 +02002697 csep = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002698 }
2699
Panagiotis Issaris59feddb2006-07-25 15:28:03 +02002700 fp = kzalloc(sizeof(*fp), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002701 if (! fp) {
2702 snd_printk(KERN_ERR "cannot malloc\n");
2703 return -ENOMEM;
2704 }
2705
Linus Torvalds1da177e2005-04-16 15:20:36 -07002706 fp->iface = iface_no;
2707 fp->altsetting = altno;
2708 fp->altset_idx = i;
2709 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
2710 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002711 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
Clemens Ladisch573567e2005-06-27 08:17:30 +02002712 if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
2713 fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
2714 * (fp->maxpacksize & 0x7ff);
Clemens Ladischfaf8d112006-05-18 09:35:15 +02002715 fp->attributes = csep ? csep[3] : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002716
2717 /* some quirks for attributes here */
2718
Clemens Ladischc3f93292005-05-04 14:56:04 +02002719 switch (chip->usb_id) {
2720 case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002721 /* Optoplay sets the sample rate attribute although
2722 * it seems not supporting it in fact.
2723 */
2724 fp->attributes &= ~EP_CS_ATTR_SAMPLE_RATE;
Clemens Ladischc3f93292005-05-04 14:56:04 +02002725 break;
2726 case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
2727 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002728 /* doesn't set the sample rate attribute, but supports it */
2729 fp->attributes |= EP_CS_ATTR_SAMPLE_RATE;
Clemens Ladischc3f93292005-05-04 14:56:04 +02002730 break;
2731 case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
2732 case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
2733 an older model 77d:223) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002734 /*
2735 * plantronics headset and Griffin iMic have set adaptive-in
2736 * although it's really not...
2737 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002738 fp->ep_attr &= ~EP_ATTR_MASK;
2739 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
2740 fp->ep_attr |= EP_ATTR_ADAPTIVE;
2741 else
2742 fp->ep_attr |= EP_ATTR_SYNC;
Clemens Ladischc3f93292005-05-04 14:56:04 +02002743 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002744 }
2745
2746 /* ok, let's parse further... */
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002747 if (parse_audio_format(chip, fp, format, fmt, stream) < 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002748 kfree(fp->rate_table);
2749 kfree(fp);
2750 continue;
2751 }
2752
Thibault LE MEURe3113342006-03-14 11:44:53 +01002753 snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint 0x%x\n", dev->devnum, iface_no, altno, fp->endpoint);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002754 err = add_audio_endpoint(chip, stream, fp);
2755 if (err < 0) {
2756 kfree(fp->rate_table);
2757 kfree(fp);
2758 return err;
2759 }
2760 /* try to set the interface... */
2761 usb_set_interface(chip->dev, iface_no, altno);
2762 init_usb_pitch(chip->dev, iface_no, alts, fp);
2763 init_usb_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max);
2764 }
2765 return 0;
2766}
2767
2768
2769/*
2770 * disconnect streams
2771 * called from snd_usb_audio_disconnect()
2772 */
Clemens Ladischee733392005-04-25 10:34:13 +02002773static void snd_usb_stream_disconnect(struct list_head *head)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002774{
2775 int idx;
Takashi Iwai86e07d32005-11-17 15:08:02 +01002776 struct snd_usb_stream *as;
2777 struct snd_usb_substream *subs;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002778
Takashi Iwai86e07d32005-11-17 15:08:02 +01002779 as = list_entry(head, struct snd_usb_stream, list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002780 for (idx = 0; idx < 2; idx++) {
2781 subs = &as->substream[idx];
2782 if (!subs->num_formats)
2783 return;
2784 release_substream_urbs(subs, 1);
2785 subs->interface = -1;
2786 }
2787}
2788
2789/*
2790 * parse audio control descriptor and create pcm/midi streams
2791 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002792static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002793{
2794 struct usb_device *dev = chip->dev;
2795 struct usb_host_interface *host_iface;
2796 struct usb_interface *iface;
2797 unsigned char *p1;
2798 int i, j;
2799
2800 /* find audiocontrol interface */
2801 host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0];
2802 if (!(p1 = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen, NULL, HEADER))) {
2803 snd_printk(KERN_ERR "cannot find HEADER\n");
2804 return -EINVAL;
2805 }
2806 if (! p1[7] || p1[0] < 8 + p1[7]) {
2807 snd_printk(KERN_ERR "invalid HEADER\n");
2808 return -EINVAL;
2809 }
2810
2811 /*
2812 * parse all USB audio streaming interfaces
2813 */
2814 for (i = 0; i < p1[7]; i++) {
2815 struct usb_host_interface *alts;
2816 struct usb_interface_descriptor *altsd;
2817 j = p1[8 + i];
2818 iface = usb_ifnum_to_if(dev, j);
2819 if (!iface) {
2820 snd_printk(KERN_ERR "%d:%u:%d : does not exist\n",
2821 dev->devnum, ctrlif, j);
2822 continue;
2823 }
2824 if (usb_interface_claimed(iface)) {
2825 snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n", dev->devnum, ctrlif, j);
2826 continue;
2827 }
2828 alts = &iface->altsetting[0];
2829 altsd = get_iface_desc(alts);
2830 if ((altsd->bInterfaceClass == USB_CLASS_AUDIO ||
2831 altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) &&
2832 altsd->bInterfaceSubClass == USB_SUBCLASS_MIDI_STREAMING) {
2833 if (snd_usb_create_midi_interface(chip, iface, NULL) < 0) {
2834 snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n", dev->devnum, ctrlif, j);
2835 continue;
2836 }
2837 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
2838 continue;
2839 }
2840 if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
2841 altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
2842 altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING) {
2843 snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n", dev->devnum, ctrlif, j, altsd->bInterfaceClass);
2844 /* skip non-supported classes */
2845 continue;
2846 }
Clemens Ladisch076639f2007-08-21 08:56:54 +02002847 if (snd_usb_get_speed(dev) == USB_SPEED_LOW) {
2848 snd_printk(KERN_ERR "low speed audio streaming not supported\n");
2849 continue;
2850 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002851 if (! parse_audio_endpoints(chip, j)) {
2852 usb_set_interface(dev, j, 0); /* reset the current interface */
2853 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
2854 }
2855 }
2856
2857 return 0;
2858}
2859
2860/*
2861 * create a stream for an endpoint/altsetting without proper descriptors
2862 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002863static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002864 struct usb_interface *iface,
Takashi Iwai86e07d32005-11-17 15:08:02 +01002865 const struct snd_usb_audio_quirk *quirk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002866{
2867 struct audioformat *fp;
2868 struct usb_host_interface *alts;
2869 int stream, err;
Al Virob4482a42007-10-14 19:35:40 +01002870 unsigned *rate_table = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002871
Alexey Dobriyan52978be2006-09-30 23:27:21 -07002872 fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002873 if (! fp) {
Alexey Dobriyan52978be2006-09-30 23:27:21 -07002874 snd_printk(KERN_ERR "cannot memdup\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002875 return -ENOMEM;
2876 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002877 if (fp->nr_rates > 0) {
2878 rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
2879 if (!rate_table) {
2880 kfree(fp);
2881 return -ENOMEM;
2882 }
2883 memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
2884 fp->rate_table = rate_table;
2885 }
2886
2887 stream = (fp->endpoint & USB_DIR_IN)
2888 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
2889 err = add_audio_endpoint(chip, stream, fp);
2890 if (err < 0) {
2891 kfree(fp);
2892 kfree(rate_table);
2893 return err;
2894 }
2895 if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
2896 fp->altset_idx >= iface->num_altsetting) {
2897 kfree(fp);
2898 kfree(rate_table);
2899 return -EINVAL;
2900 }
2901 alts = &iface->altsetting[fp->altset_idx];
2902 usb_set_interface(chip->dev, fp->iface, 0);
2903 init_usb_pitch(chip->dev, fp->iface, alts, fp);
2904 init_usb_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max);
2905 return 0;
2906}
2907
2908/*
2909 * create a stream for an interface with proper descriptors
2910 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002911static int create_standard_audio_quirk(struct snd_usb_audio *chip,
Clemens Ladischd1bda042005-09-14 08:36:03 +02002912 struct usb_interface *iface,
Takashi Iwai86e07d32005-11-17 15:08:02 +01002913 const struct snd_usb_audio_quirk *quirk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002914{
2915 struct usb_host_interface *alts;
2916 struct usb_interface_descriptor *altsd;
2917 int err;
2918
2919 alts = &iface->altsetting[0];
2920 altsd = get_iface_desc(alts);
Clemens Ladischd1bda042005-09-14 08:36:03 +02002921 err = parse_audio_endpoints(chip, altsd->bInterfaceNumber);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002922 if (err < 0) {
2923 snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
2924 altsd->bInterfaceNumber, err);
2925 return err;
2926 }
Clemens Ladischd1bda042005-09-14 08:36:03 +02002927 /* reset the current interface */
2928 usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002929 return 0;
2930}
2931
2932/*
2933 * Create a stream for an Edirol UA-700/UA-25 interface. The only way
2934 * to detect the sample rate is by looking at wMaxPacketSize.
2935 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01002936static int create_ua700_ua25_quirk(struct snd_usb_audio *chip,
Clemens Ladisch854af952005-07-25 16:19:10 +02002937 struct usb_interface *iface,
Takashi Iwai86e07d32005-11-17 15:08:02 +01002938 const struct snd_usb_audio_quirk *quirk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002939{
2940 static const struct audioformat ua_format = {
2941 .format = SNDRV_PCM_FORMAT_S24_3LE,
2942 .channels = 2,
2943 .fmt_type = USB_FORMAT_TYPE_I,
2944 .altsetting = 1,
2945 .altset_idx = 1,
2946 .rates = SNDRV_PCM_RATE_CONTINUOUS,
2947 };
2948 struct usb_host_interface *alts;
2949 struct usb_interface_descriptor *altsd;
2950 struct audioformat *fp;
2951 int stream, err;
2952
2953 /* both PCM and MIDI interfaces have 2 altsettings */
2954 if (iface->num_altsetting != 2)
2955 return -ENXIO;
2956 alts = &iface->altsetting[1];
2957 altsd = get_iface_desc(alts);
2958
2959 if (altsd->bNumEndpoints == 2) {
Takashi Iwai86e07d32005-11-17 15:08:02 +01002960 static const struct snd_usb_midi_endpoint_info ua700_ep = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002961 .out_cables = 0x0003,
2962 .in_cables = 0x0003
2963 };
Takashi Iwai86e07d32005-11-17 15:08:02 +01002964 static const struct snd_usb_audio_quirk ua700_quirk = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002965 .type = QUIRK_MIDI_FIXED_ENDPOINT,
2966 .data = &ua700_ep
2967 };
Takashi Iwai86e07d32005-11-17 15:08:02 +01002968 static const struct snd_usb_midi_endpoint_info ua25_ep = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002969 .out_cables = 0x0001,
2970 .in_cables = 0x0001
2971 };
Takashi Iwai86e07d32005-11-17 15:08:02 +01002972 static const struct snd_usb_audio_quirk ua25_quirk = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002973 .type = QUIRK_MIDI_FIXED_ENDPOINT,
2974 .data = &ua25_ep
2975 };
Clemens Ladisch27d10f52005-05-02 08:51:26 +02002976 if (chip->usb_id == USB_ID(0x0582, 0x002b))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002977 return snd_usb_create_midi_interface(chip, iface,
2978 &ua700_quirk);
2979 else
2980 return snd_usb_create_midi_interface(chip, iface,
2981 &ua25_quirk);
2982 }
2983
2984 if (altsd->bNumEndpoints != 1)
2985 return -ENXIO;
2986
2987 fp = kmalloc(sizeof(*fp), GFP_KERNEL);
2988 if (!fp)
2989 return -ENOMEM;
2990 memcpy(fp, &ua_format, sizeof(*fp));
2991
2992 fp->iface = altsd->bInterfaceNumber;
2993 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
2994 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
2995 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
2996
2997 switch (fp->maxpacksize) {
2998 case 0x120:
2999 fp->rate_max = fp->rate_min = 44100;
3000 break;
3001 case 0x138:
3002 case 0x140:
3003 fp->rate_max = fp->rate_min = 48000;
3004 break;
3005 case 0x258:
3006 case 0x260:
3007 fp->rate_max = fp->rate_min = 96000;
3008 break;
3009 default:
3010 snd_printk(KERN_ERR "unknown sample rate\n");
3011 kfree(fp);
3012 return -ENXIO;
3013 }
3014
3015 stream = (fp->endpoint & USB_DIR_IN)
3016 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
3017 err = add_audio_endpoint(chip, stream, fp);
3018 if (err < 0) {
3019 kfree(fp);
3020 return err;
3021 }
3022 usb_set_interface(chip->dev, fp->iface, 0);
3023 return 0;
3024}
3025
3026/*
3027 * Create a stream for an Edirol UA-1000 interface.
3028 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01003029static int create_ua1000_quirk(struct snd_usb_audio *chip,
Clemens Ladisch854af952005-07-25 16:19:10 +02003030 struct usb_interface *iface,
Takashi Iwai86e07d32005-11-17 15:08:02 +01003031 const struct snd_usb_audio_quirk *quirk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003032{
3033 static const struct audioformat ua1000_format = {
3034 .format = SNDRV_PCM_FORMAT_S32_LE,
3035 .fmt_type = USB_FORMAT_TYPE_I,
3036 .altsetting = 1,
3037 .altset_idx = 1,
3038 .attributes = 0,
3039 .rates = SNDRV_PCM_RATE_CONTINUOUS,
3040 };
3041 struct usb_host_interface *alts;
3042 struct usb_interface_descriptor *altsd;
3043 struct audioformat *fp;
3044 int stream, err;
3045
3046 if (iface->num_altsetting != 2)
3047 return -ENXIO;
3048 alts = &iface->altsetting[1];
3049 altsd = get_iface_desc(alts);
Ben Williamsonc4a87ef2006-06-19 17:20:09 +02003050 if (alts->extralen != 11 || alts->extra[1] != USB_DT_CS_INTERFACE ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07003051 altsd->bNumEndpoints != 1)
3052 return -ENXIO;
3053
Alexey Dobriyan52978be2006-09-30 23:27:21 -07003054 fp = kmemdup(&ua1000_format, sizeof(*fp), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003055 if (!fp)
3056 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003057
3058 fp->channels = alts->extra[4];
3059 fp->iface = altsd->bInterfaceNumber;
3060 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
3061 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
3062 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
3063 fp->rate_max = fp->rate_min = combine_triple(&alts->extra[8]);
3064
3065 stream = (fp->endpoint & USB_DIR_IN)
3066 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
3067 err = add_audio_endpoint(chip, stream, fp);
3068 if (err < 0) {
3069 kfree(fp);
3070 return err;
3071 }
3072 /* FIXME: playback must be synchronized to capture */
3073 usb_set_interface(chip->dev, fp->iface, 0);
3074 return 0;
3075}
3076
Bjoern Fayd0b0fac2007-02-05 12:27:21 +01003077/*
3078 * Create a stream for an Edirol UA-101 interface.
3079 * Copy, paste and modify from Edirol UA-1000
3080 */
3081static int create_ua101_quirk(struct snd_usb_audio *chip,
3082 struct usb_interface *iface,
3083 const struct snd_usb_audio_quirk *quirk)
3084{
3085 static const struct audioformat ua101_format = {
3086 .format = SNDRV_PCM_FORMAT_S32_LE,
3087 .fmt_type = USB_FORMAT_TYPE_I,
3088 .altsetting = 1,
3089 .altset_idx = 1,
3090 .attributes = 0,
3091 .rates = SNDRV_PCM_RATE_CONTINUOUS,
3092 };
3093 struct usb_host_interface *alts;
3094 struct usb_interface_descriptor *altsd;
3095 struct audioformat *fp;
3096 int stream, err;
3097
3098 if (iface->num_altsetting != 2)
3099 return -ENXIO;
3100 alts = &iface->altsetting[1];
3101 altsd = get_iface_desc(alts);
3102 if (alts->extralen != 18 || alts->extra[1] != USB_DT_CS_INTERFACE ||
3103 altsd->bNumEndpoints != 1)
3104 return -ENXIO;
3105
3106 fp = kmemdup(&ua101_format, sizeof(*fp), GFP_KERNEL);
3107 if (!fp)
3108 return -ENOMEM;
3109
3110 fp->channels = alts->extra[11];
3111 fp->iface = altsd->bInterfaceNumber;
3112 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
3113 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
3114 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
3115 fp->rate_max = fp->rate_min = combine_triple(&alts->extra[15]);
3116
3117 stream = (fp->endpoint & USB_DIR_IN)
3118 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
3119 err = add_audio_endpoint(chip, stream, fp);
3120 if (err < 0) {
3121 kfree(fp);
3122 return err;
3123 }
3124 /* FIXME: playback must be synchronized to capture */
3125 usb_set_interface(chip->dev, fp->iface, 0);
3126 return 0;
3127}
3128
Takashi Iwai86e07d32005-11-17 15:08:02 +01003129static int snd_usb_create_quirk(struct snd_usb_audio *chip,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003130 struct usb_interface *iface,
Takashi Iwai86e07d32005-11-17 15:08:02 +01003131 const struct snd_usb_audio_quirk *quirk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003132
3133/*
3134 * handle the quirks for the contained interfaces
3135 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01003136static int create_composite_quirk(struct snd_usb_audio *chip,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003137 struct usb_interface *iface,
Takashi Iwai86e07d32005-11-17 15:08:02 +01003138 const struct snd_usb_audio_quirk *quirk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003139{
3140 int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
3141 int err;
3142
3143 for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
3144 iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
3145 if (!iface)
3146 continue;
3147 if (quirk->ifnum != probed_ifnum &&
3148 usb_interface_claimed(iface))
3149 continue;
3150 err = snd_usb_create_quirk(chip, iface, quirk);
3151 if (err < 0)
3152 return err;
3153 if (quirk->ifnum != probed_ifnum)
3154 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
3155 }
3156 return 0;
3157}
3158
Takashi Iwai86e07d32005-11-17 15:08:02 +01003159static int ignore_interface_quirk(struct snd_usb_audio *chip,
Clemens Ladisch854af952005-07-25 16:19:10 +02003160 struct usb_interface *iface,
Takashi Iwai86e07d32005-11-17 15:08:02 +01003161 const struct snd_usb_audio_quirk *quirk)
Clemens Ladisch854af952005-07-25 16:19:10 +02003162{
3163 return 0;
3164}
3165
Linus Torvalds1da177e2005-04-16 15:20:36 -07003166
3167/*
3168 * boot quirks
3169 */
3170
3171#define EXTIGY_FIRMWARE_SIZE_OLD 794
3172#define EXTIGY_FIRMWARE_SIZE_NEW 483
3173
3174static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
3175{
3176 struct usb_host_config *config = dev->actconfig;
3177 int err;
3178
3179 if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
3180 le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
3181 snd_printdd("sending Extigy boot sequence...\n");
3182 /* Send message to force it to reconnect with full interface. */
3183 err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
3184 0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
3185 if (err < 0) snd_printdd("error sending boot message: %d\n", err);
3186 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
3187 &dev->descriptor, sizeof(dev->descriptor));
3188 config = dev->actconfig;
3189 if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
3190 err = usb_reset_configuration(dev);
3191 if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
3192 snd_printdd("extigy_boot: new boot length = %d\n",
3193 le16_to_cpu(get_cfg_desc(config)->wTotalLength));
3194 return -ENODEV; /* quit this anyway */
3195 }
3196 return 0;
3197}
3198
Clemens Ladisch3a2f0852005-05-09 09:20:31 +02003199static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
3200{
Clemens Ladisch3a2f0852005-05-09 09:20:31 +02003201 u8 buf = 1;
3202
3203 snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
3204 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
3205 0, 0, &buf, 1, 1000);
3206 if (buf == 0) {
3207 snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
3208 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
3209 1, 2000, NULL, 0, 1000);
3210 return -ENODEV;
3211 }
Clemens Ladisch3a2f0852005-05-09 09:20:31 +02003212 return 0;
3213}
3214
Thibault LE MEURe3113342006-03-14 11:44:53 +01003215/*
Sam Revitche217e302006-06-23 15:10:18 +02003216 * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
3217 * documented in the device's data sheet.
3218 */
3219static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
3220{
3221 u8 buf[4];
3222 buf[0] = 0x20;
3223 buf[1] = value & 0xff;
3224 buf[2] = (value >> 8) & 0xff;
3225 buf[3] = reg;
3226 return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
3227 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
3228 0, 0, &buf, 4, 1000);
3229}
3230
3231static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
3232{
3233 /*
3234 * Enable line-out driver mode, set headphone source to front
3235 * channels, enable stereo mic.
3236 */
3237 return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
3238}
3239
3240
3241/*
Thibault LE MEURe3113342006-03-14 11:44:53 +01003242 * Setup quirks
3243 */
3244#define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */
3245#define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */
3246#define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
3247#define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
3248#define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */
3249#define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */
3250#define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */
3251#define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */
3252#define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */
3253#define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */
3254
3255static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
3256 int iface, int altno)
3257{
Thibault Le Meurf8c78b82007-07-12 11:26:35 +02003258 /* Reset ALL ifaces to 0 altsetting.
3259 * Call it for every possible altsetting of every interface.
3260 */
3261 usb_set_interface(chip->dev, iface, 0);
3262
Thibault LE MEURe3113342006-03-14 11:44:53 +01003263 if (device_setup[chip->index] & AUDIOPHILE_SET) {
3264 if ((device_setup[chip->index] & AUDIOPHILE_SET_DTS)
3265 && altno != 6)
3266 return 1; /* skip this altsetting */
3267 if ((device_setup[chip->index] & AUDIOPHILE_SET_96K)
3268 && altno != 1)
3269 return 1; /* skip this altsetting */
3270 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3271 AUDIOPHILE_SET_24B_48K_DI && altno != 2)
3272 return 1; /* skip this altsetting */
3273 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3274 AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3)
3275 return 1; /* skip this altsetting */
3276 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3277 AUDIOPHILE_SET_16B_48K_DI && altno != 4)
3278 return 1; /* skip this altsetting */
3279 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3280 AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5)
3281 return 1; /* skip this altsetting */
3282 }
3283 return 0; /* keep this altsetting */
3284}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003285
3286/*
3287 * audio-interface quirks
3288 *
3289 * returns zero if no standard audio/MIDI parsing is needed.
3290 * returns a postive value if standard audio/midi interfaces are parsed
3291 * after this.
3292 * returns a negative value at error.
3293 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01003294static int snd_usb_create_quirk(struct snd_usb_audio *chip,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003295 struct usb_interface *iface,
Takashi Iwai86e07d32005-11-17 15:08:02 +01003296 const struct snd_usb_audio_quirk *quirk)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003297{
Takashi Iwai86e07d32005-11-17 15:08:02 +01003298 typedef int (*quirk_func_t)(struct snd_usb_audio *, struct usb_interface *,
3299 const struct snd_usb_audio_quirk *);
Clemens Ladisch854af952005-07-25 16:19:10 +02003300 static const quirk_func_t quirk_funcs[] = {
3301 [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
3302 [QUIRK_COMPOSITE] = create_composite_quirk,
3303 [QUIRK_MIDI_STANDARD_INTERFACE] = snd_usb_create_midi_interface,
3304 [QUIRK_MIDI_FIXED_ENDPOINT] = snd_usb_create_midi_interface,
3305 [QUIRK_MIDI_YAMAHA] = snd_usb_create_midi_interface,
3306 [QUIRK_MIDI_MIDIMAN] = snd_usb_create_midi_interface,
3307 [QUIRK_MIDI_NOVATION] = snd_usb_create_midi_interface,
3308 [QUIRK_MIDI_RAW] = snd_usb_create_midi_interface,
3309 [QUIRK_MIDI_EMAGIC] = snd_usb_create_midi_interface,
Clemens Ladischcc7a59b2006-02-07 17:11:06 +01003310 [QUIRK_MIDI_CME] = snd_usb_create_midi_interface,
Clemens Ladischd1bda042005-09-14 08:36:03 +02003311 [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
Clemens Ladisch854af952005-07-25 16:19:10 +02003312 [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
3313 [QUIRK_AUDIO_EDIROL_UA700_UA25] = create_ua700_ua25_quirk,
3314 [QUIRK_AUDIO_EDIROL_UA1000] = create_ua1000_quirk,
Bjoern Fayd0b0fac2007-02-05 12:27:21 +01003315 [QUIRK_AUDIO_EDIROL_UA101] = create_ua101_quirk,
Clemens Ladisch854af952005-07-25 16:19:10 +02003316 };
3317
3318 if (quirk->type < QUIRK_TYPE_COUNT) {
3319 return quirk_funcs[quirk->type](chip, iface, quirk);
3320 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003321 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
3322 return -ENXIO;
3323 }
3324}
3325
3326
3327/*
3328 * common proc files to show the usb device info
3329 */
Takashi Iwai86e07d32005-11-17 15:08:02 +01003330static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003331{
Takashi Iwai86e07d32005-11-17 15:08:02 +01003332 struct snd_usb_audio *chip = entry->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003333 if (! chip->shutdown)
3334 snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
3335}
3336
Takashi Iwai86e07d32005-11-17 15:08:02 +01003337static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003338{
Takashi Iwai86e07d32005-11-17 15:08:02 +01003339 struct snd_usb_audio *chip = entry->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003340 if (! chip->shutdown)
3341 snd_iprintf(buffer, "%04x:%04x\n",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02003342 USB_ID_VENDOR(chip->usb_id),
3343 USB_ID_PRODUCT(chip->usb_id));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003344}
3345
Takashi Iwai86e07d32005-11-17 15:08:02 +01003346static void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003347{
Takashi Iwai86e07d32005-11-17 15:08:02 +01003348 struct snd_info_entry *entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003349 if (! snd_card_proc_new(chip->card, "usbbus", &entry))
Takashi Iwaibf850202006-04-28 15:13:41 +02003350 snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003351 if (! snd_card_proc_new(chip->card, "usbid", &entry))
Takashi Iwaibf850202006-04-28 15:13:41 +02003352 snd_info_set_text_ops(entry, chip, proc_audio_usbid_read);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003353}
3354
3355/*
3356 * free the chip instance
3357 *
3358 * here we have to do not much, since pcm and controls are already freed
3359 *
3360 */
3361
Takashi Iwai86e07d32005-11-17 15:08:02 +01003362static int snd_usb_audio_free(struct snd_usb_audio *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003363{
Takashi Iwai2a2a5dd2007-01-08 17:42:22 +01003364 usb_chip[chip->index] = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003365 kfree(chip);
3366 return 0;
3367}
3368
Takashi Iwai86e07d32005-11-17 15:08:02 +01003369static int snd_usb_audio_dev_free(struct snd_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003370{
Takashi Iwai86e07d32005-11-17 15:08:02 +01003371 struct snd_usb_audio *chip = device->device_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003372 return snd_usb_audio_free(chip);
3373}
3374
3375
3376/*
3377 * create a chip instance and set its names.
3378 */
3379static int snd_usb_audio_create(struct usb_device *dev, int idx,
Takashi Iwai86e07d32005-11-17 15:08:02 +01003380 const struct snd_usb_audio_quirk *quirk,
3381 struct snd_usb_audio **rchip)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003382{
Takashi Iwai86e07d32005-11-17 15:08:02 +01003383 struct snd_card *card;
3384 struct snd_usb_audio *chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003385 int err, len;
3386 char component[14];
Takashi Iwai86e07d32005-11-17 15:08:02 +01003387 static struct snd_device_ops ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003388 .dev_free = snd_usb_audio_dev_free,
3389 };
3390
3391 *rchip = NULL;
3392
Clemens Ladisch076639f2007-08-21 08:56:54 +02003393 if (snd_usb_get_speed(dev) != USB_SPEED_LOW &&
3394 snd_usb_get_speed(dev) != USB_SPEED_FULL &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07003395 snd_usb_get_speed(dev) != USB_SPEED_HIGH) {
3396 snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev));
3397 return -ENXIO;
3398 }
3399
3400 card = snd_card_new(index[idx], id[idx], THIS_MODULE, 0);
3401 if (card == NULL) {
3402 snd_printk(KERN_ERR "cannot create card instance %d\n", idx);
3403 return -ENOMEM;
3404 }
3405
Takashi Iwai561b2202005-09-09 14:22:34 +02003406 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003407 if (! chip) {
3408 snd_card_free(card);
3409 return -ENOMEM;
3410 }
3411
3412 chip->index = idx;
3413 chip->dev = dev;
3414 chip->card = card;
Clemens Ladisch27d10f52005-05-02 08:51:26 +02003415 chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
3416 le16_to_cpu(dev->descriptor.idProduct));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003417 INIT_LIST_HEAD(&chip->pcm_list);
3418 INIT_LIST_HEAD(&chip->midi_list);
Clemens Ladisch84957a82005-04-29 16:23:13 +02003419 INIT_LIST_HEAD(&chip->mixer_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003420
3421 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
3422 snd_usb_audio_free(chip);
3423 snd_card_free(card);
3424 return err;
3425 }
3426
3427 strcpy(card->driver, "USB-Audio");
3428 sprintf(component, "USB%04x:%04x",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02003429 USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003430 snd_component_add(card, component);
3431
3432 /* retrieve the device string as shortname */
3433 if (quirk && quirk->product_name) {
3434 strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname));
3435 } else {
3436 if (!dev->descriptor.iProduct ||
3437 usb_string(dev, dev->descriptor.iProduct,
3438 card->shortname, sizeof(card->shortname)) <= 0) {
3439 /* no name available from anywhere, so use ID */
3440 sprintf(card->shortname, "USB Device %#04x:%#04x",
Clemens Ladisch27d10f52005-05-02 08:51:26 +02003441 USB_ID_VENDOR(chip->usb_id),
3442 USB_ID_PRODUCT(chip->usb_id));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003443 }
3444 }
3445
3446 /* retrieve the vendor and device strings as longname */
3447 if (quirk && quirk->vendor_name) {
3448 len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname));
3449 } else {
3450 if (dev->descriptor.iManufacturer)
3451 len = usb_string(dev, dev->descriptor.iManufacturer,
3452 card->longname, sizeof(card->longname));
3453 else
3454 len = 0;
3455 /* we don't really care if there isn't any vendor string */
3456 }
3457 if (len > 0)
3458 strlcat(card->longname, " ", sizeof(card->longname));
3459
3460 strlcat(card->longname, card->shortname, sizeof(card->longname));
3461
3462 len = strlcat(card->longname, " at ", sizeof(card->longname));
3463
3464 if (len < sizeof(card->longname))
3465 usb_make_path(dev, card->longname + len, sizeof(card->longname) - len);
3466
3467 strlcat(card->longname,
Clemens Ladisch076639f2007-08-21 08:56:54 +02003468 snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" :
3469 snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" :
3470 ", high speed",
Linus Torvalds1da177e2005-04-16 15:20:36 -07003471 sizeof(card->longname));
3472
3473 snd_usb_audio_create_proc(chip);
3474
Linus Torvalds1da177e2005-04-16 15:20:36 -07003475 *rchip = chip;
3476 return 0;
3477}
3478
3479
3480/*
3481 * probe the active usb device
3482 *
3483 * note that this can be called multiple times per a device, when it
3484 * includes multiple audio control interfaces.
3485 *
3486 * thus we check the usb device pointer and creates the card instance
3487 * only at the first time. the successive calls of this function will
3488 * append the pcm interface to the corresponding card.
3489 */
3490static void *snd_usb_audio_probe(struct usb_device *dev,
3491 struct usb_interface *intf,
3492 const struct usb_device_id *usb_id)
3493{
Takashi Iwai86e07d32005-11-17 15:08:02 +01003494 const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003495 int i, err;
Takashi Iwai86e07d32005-11-17 15:08:02 +01003496 struct snd_usb_audio *chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003497 struct usb_host_interface *alts;
3498 int ifnum;
Clemens Ladisch27d10f52005-05-02 08:51:26 +02003499 u32 id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003500
3501 alts = &intf->altsetting[0];
3502 ifnum = get_iface_desc(alts)->bInterfaceNumber;
Clemens Ladisch27d10f52005-05-02 08:51:26 +02003503 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
3504 le16_to_cpu(dev->descriptor.idProduct));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003505
3506 if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum)
3507 goto __err_val;
3508
3509 /* SB Extigy needs special boot-up sequence */
3510 /* if more models come, this will go to the quirk list. */
Clemens Ladisch27d10f52005-05-02 08:51:26 +02003511 if (id == USB_ID(0x041e, 0x3000)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003512 if (snd_usb_extigy_boot_quirk(dev, intf) < 0)
3513 goto __err_val;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003514 }
Clemens Ladisch3a2f0852005-05-09 09:20:31 +02003515 /* SB Audigy 2 NX needs its own boot-up magic, too */
3516 if (id == USB_ID(0x041e, 0x3020)) {
3517 if (snd_usb_audigy2nx_boot_quirk(dev) < 0)
3518 goto __err_val;
3519 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003520
Sam Revitche217e302006-06-23 15:10:18 +02003521 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
3522 if (id == USB_ID(0x10f5, 0x0200)) {
3523 if (snd_usb_cm106_boot_quirk(dev) < 0)
3524 goto __err_val;
3525 }
3526
Linus Torvalds1da177e2005-04-16 15:20:36 -07003527 /*
3528 * found a config. now register to ALSA
3529 */
3530
3531 /* check whether it's already registered */
3532 chip = NULL;
Ingo Molnar12aa7572006-01-16 16:36:05 +01003533 mutex_lock(&register_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003534 for (i = 0; i < SNDRV_CARDS; i++) {
3535 if (usb_chip[i] && usb_chip[i]->dev == dev) {
3536 if (usb_chip[i]->shutdown) {
3537 snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n");
3538 goto __error;
3539 }
3540 chip = usb_chip[i];
3541 break;
3542 }
3543 }
3544 if (! chip) {
3545 /* it's a fresh one.
3546 * now look for an empty slot and create a new card instance
3547 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003548 for (i = 0; i < SNDRV_CARDS; i++)
3549 if (enable[i] && ! usb_chip[i] &&
Clemens Ladisch27d10f52005-05-02 08:51:26 +02003550 (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) &&
3551 (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003552 if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) {
3553 goto __error;
3554 }
Clemens Ladisch1dcd3ec2005-05-10 14:51:40 +02003555 snd_card_set_dev(chip->card, &intf->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003556 break;
3557 }
3558 if (! chip) {
3559 snd_printk(KERN_ERR "no available usb audio device\n");
3560 goto __error;
3561 }
3562 }
3563
3564 err = 1; /* continue */
3565 if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) {
3566 /* need some special handlings */
3567 if ((err = snd_usb_create_quirk(chip, intf, quirk)) < 0)
3568 goto __error;
3569 }
3570
3571 if (err > 0) {
3572 /* create normal USB audio interfaces */
3573 if (snd_usb_create_streams(chip, ifnum) < 0 ||
3574 snd_usb_create_mixer(chip, ifnum) < 0) {
3575 goto __error;
3576 }
3577 }
3578
3579 /* we are allowed to call snd_card_register() many times */
3580 if (snd_card_register(chip->card) < 0) {
3581 goto __error;
3582 }
3583
3584 usb_chip[chip->index] = chip;
3585 chip->num_interfaces++;
Ingo Molnar12aa7572006-01-16 16:36:05 +01003586 mutex_unlock(&register_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003587 return chip;
3588
3589 __error:
3590 if (chip && !chip->num_interfaces)
3591 snd_card_free(chip->card);
Ingo Molnar12aa7572006-01-16 16:36:05 +01003592 mutex_unlock(&register_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003593 __err_val:
3594 return NULL;
3595}
3596
3597/*
3598 * we need to take care of counter, since disconnection can be called also
3599 * many times as well as usb_audio_probe().
3600 */
3601static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr)
3602{
Takashi Iwai86e07d32005-11-17 15:08:02 +01003603 struct snd_usb_audio *chip;
3604 struct snd_card *card;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003605 struct list_head *p;
3606
3607 if (ptr == (void *)-1L)
3608 return;
3609
3610 chip = ptr;
3611 card = chip->card;
Ingo Molnar12aa7572006-01-16 16:36:05 +01003612 mutex_lock(&register_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003613 chip->shutdown = 1;
3614 chip->num_interfaces--;
3615 if (chip->num_interfaces <= 0) {
3616 snd_card_disconnect(card);
3617 /* release the pcm resources */
3618 list_for_each(p, &chip->pcm_list) {
Clemens Ladischee733392005-04-25 10:34:13 +02003619 snd_usb_stream_disconnect(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003620 }
3621 /* release the midi resources */
3622 list_for_each(p, &chip->midi_list) {
Clemens Ladischee733392005-04-25 10:34:13 +02003623 snd_usbmidi_disconnect(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003624 }
Clemens Ladisch84957a82005-04-29 16:23:13 +02003625 /* release mixer resources */
3626 list_for_each(p, &chip->mixer_list) {
3627 snd_usb_mixer_disconnect(p);
3628 }
Ingo Molnar12aa7572006-01-16 16:36:05 +01003629 mutex_unlock(&register_mutex);
Takashi Iwaic4614822006-06-23 14:38:23 +02003630 snd_card_free_when_closed(card);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003631 } else {
Ingo Molnar12aa7572006-01-16 16:36:05 +01003632 mutex_unlock(&register_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003633 }
3634}
3635
3636/*
3637 * new 2.5 USB kernel API
3638 */
3639static int usb_audio_probe(struct usb_interface *intf,
3640 const struct usb_device_id *id)
3641{
3642 void *chip;
3643 chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id);
3644 if (chip) {
3645 dev_set_drvdata(&intf->dev, chip);
3646 return 0;
3647 } else
3648 return -EIO;
3649}
3650
3651static void usb_audio_disconnect(struct usb_interface *intf)
3652{
3653 snd_usb_audio_disconnect(interface_to_usbdev(intf),
3654 dev_get_drvdata(&intf->dev));
3655}
3656
3657
3658static int __init snd_usb_audio_init(void)
3659{
3660 if (nrpacks < MIN_PACKS_URB || nrpacks > MAX_PACKS) {
3661 printk(KERN_WARNING "invalid nrpacks value.\n");
3662 return -EINVAL;
3663 }
Tobias Klausercf78bbc2006-10-04 18:12:43 +02003664 return usb_register(&usb_audio_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003665}
3666
3667
3668static void __exit snd_usb_audio_cleanup(void)
3669{
3670 usb_deregister(&usb_audio_driver);
3671}
3672
3673module_init(snd_usb_audio_init);
3674module_exit(snd_usb_audio_cleanup);