]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
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 | ||
1da177e4 LT |
41 | #include <linux/bitops.h> |
42 | #include <linux/init.h> | |
43 | #include <linux/list.h> | |
44 | #include <linux/slab.h> | |
45 | #include <linux/string.h> | |
46 | #include <linux/usb.h> | |
6207e51b | 47 | #include <linux/vmalloc.h> |
1da177e4 | 48 | #include <linux/moduleparam.h> |
12aa7579 | 49 | #include <linux/mutex.h> |
1da177e4 LT |
50 | #include <sound/core.h> |
51 | #include <sound/info.h> | |
52 | #include <sound/pcm.h> | |
53 | #include <sound/pcm_params.h> | |
54 | #include <sound/initval.h> | |
55 | ||
56 | #include "usbaudio.h" | |
57 | ||
58 | ||
59 | MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); | |
60 | MODULE_DESCRIPTION("USB Audio"); | |
61 | MODULE_LICENSE("GPL"); | |
62 | MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}"); | |
63 | ||
64 | ||
65 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
66 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
67 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ | |
68 | static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Vendor ID for this card */ | |
69 | static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Product ID for this card */ | |
92b9ac78 | 70 | static int nrpacks = 8; /* max. number of packets per urb */ |
1da177e4 | 71 | static int async_unlink = 1; |
e311334e | 72 | static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/ |
1da177e4 LT |
73 | |
74 | module_param_array(index, int, NULL, 0444); | |
75 | MODULE_PARM_DESC(index, "Index value for the USB audio adapter."); | |
76 | module_param_array(id, charp, NULL, 0444); | |
77 | MODULE_PARM_DESC(id, "ID string for the USB audio adapter."); | |
78 | module_param_array(enable, bool, NULL, 0444); | |
79 | MODULE_PARM_DESC(enable, "Enable USB audio adapter."); | |
80 | module_param_array(vid, int, NULL, 0444); | |
81 | MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device."); | |
82 | module_param_array(pid, int, NULL, 0444); | |
83 | MODULE_PARM_DESC(pid, "Product ID for the USB audio device."); | |
71d848ca | 84 | module_param(nrpacks, int, 0644); |
1da177e4 LT |
85 | MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB."); |
86 | module_param(async_unlink, bool, 0444); | |
87 | MODULE_PARM_DESC(async_unlink, "Use async unlink mode."); | |
e311334e TLM |
88 | module_param_array(device_setup, int, NULL, 0444); |
89 | MODULE_PARM_DESC(device_setup, "Specific device setup (if needed)."); | |
1da177e4 LT |
90 | |
91 | ||
92 | /* | |
93 | * debug the h/w constraints | |
94 | */ | |
95 | /* #define HW_CONST_DEBUG */ | |
96 | ||
97 | ||
98 | /* | |
99 | * | |
100 | */ | |
101 | ||
92b9ac78 | 102 | #define MAX_PACKS 20 |
1da177e4 | 103 | #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ |
15a24c07 | 104 | #define MAX_URBS 8 |
604cf499 | 105 | #define SYNC_URBS 4 /* always four urbs for sync */ |
1da177e4 LT |
106 | #define MIN_PACKS_URB 1 /* minimum 1 packet per urb */ |
107 | ||
1da177e4 LT |
108 | struct audioformat { |
109 | struct list_head list; | |
110 | snd_pcm_format_t format; /* format type */ | |
111 | unsigned int channels; /* # channels */ | |
112 | unsigned int fmt_type; /* USB audio format type (1-3) */ | |
113 | unsigned int frame_size; /* samples per frame for non-audio */ | |
114 | int iface; /* interface number */ | |
115 | unsigned char altsetting; /* corresponding alternate setting */ | |
116 | unsigned char altset_idx; /* array index of altenate setting */ | |
117 | unsigned char attributes; /* corresponding attributes of cs endpoint */ | |
118 | unsigned char endpoint; /* endpoint */ | |
119 | unsigned char ep_attr; /* endpoint attributes */ | |
120 | unsigned int maxpacksize; /* max. packet size */ | |
121 | unsigned int rates; /* rate bitmasks */ | |
122 | unsigned int rate_min, rate_max; /* min/max rates */ | |
123 | unsigned int nr_rates; /* number of rate table entries */ | |
124 | unsigned int *rate_table; /* rate table */ | |
125 | }; | |
126 | ||
86e07d34 TI |
127 | struct snd_usb_substream; |
128 | ||
1da177e4 LT |
129 | struct snd_urb_ctx { |
130 | struct urb *urb; | |
55851f73 | 131 | unsigned int buffer_size; /* size of data buffer, if data URB */ |
86e07d34 | 132 | struct snd_usb_substream *subs; |
1da177e4 LT |
133 | int index; /* index for urb array */ |
134 | int packets; /* number of packets per urb */ | |
1da177e4 LT |
135 | }; |
136 | ||
137 | struct snd_urb_ops { | |
86e07d34 TI |
138 | int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); |
139 | int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); | |
140 | int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); | |
141 | int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); | |
1da177e4 LT |
142 | }; |
143 | ||
144 | struct snd_usb_substream { | |
86e07d34 | 145 | struct snd_usb_stream *stream; |
1da177e4 | 146 | struct usb_device *dev; |
86e07d34 | 147 | struct snd_pcm_substream *pcm_substream; |
1da177e4 LT |
148 | int direction; /* playback or capture */ |
149 | int interface; /* current interface */ | |
150 | int endpoint; /* assigned endpoint */ | |
151 | struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */ | |
152 | unsigned int cur_rate; /* current rate (for hw_params callback) */ | |
153 | unsigned int period_bytes; /* current period bytes (for hw_params callback) */ | |
154 | unsigned int format; /* USB data format */ | |
155 | unsigned int datapipe; /* the data i/o pipe */ | |
156 | unsigned int syncpipe; /* 1 - async out or adaptive in */ | |
573567e0 | 157 | unsigned int datainterval; /* log_2 of data packet interval */ |
1da177e4 LT |
158 | unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */ |
159 | unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */ | |
160 | unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */ | |
161 | unsigned int freqmax; /* maximum sampling rate, used for buffer management */ | |
162 | unsigned int phase; /* phase accumulator */ | |
163 | unsigned int maxpacksize; /* max packet size in bytes */ | |
164 | unsigned int maxframesize; /* max packet size in frames */ | |
165 | unsigned int curpacksize; /* current packet size in bytes (for capture) */ | |
166 | unsigned int curframesize; /* current packet size in frames (for capture) */ | |
167 | unsigned int fill_max: 1; /* fill max packet size always */ | |
168 | unsigned int fmt_type; /* USB audio format type (1-3) */ | |
9624ea81 | 169 | unsigned int packs_per_ms; /* packets per millisecond (for playback) */ |
1da177e4 LT |
170 | |
171 | unsigned int running: 1; /* running status */ | |
172 | ||
1da177e4 | 173 | unsigned int hwptr_done; /* processed frame position in the buffer */ |
1da177e4 LT |
174 | unsigned int transfer_done; /* processed frames since last period update */ |
175 | unsigned long active_mask; /* bitmask of active urbs */ | |
176 | unsigned long unlink_mask; /* bitmask of unlinked urbs */ | |
177 | ||
178 | unsigned int nurbs; /* # urbs */ | |
86e07d34 TI |
179 | struct snd_urb_ctx dataurb[MAX_URBS]; /* data urb table */ |
180 | struct snd_urb_ctx syncurb[SYNC_URBS]; /* sync urb table */ | |
55851f73 CL |
181 | char *syncbuf; /* sync buffer for all sync URBs */ |
182 | dma_addr_t sync_dma; /* DMA address of syncbuf */ | |
1da177e4 LT |
183 | |
184 | u64 formats; /* format bitmasks (all or'ed) */ | |
185 | unsigned int num_formats; /* number of supported audio formats (list) */ | |
186 | struct list_head fmt_list; /* format list */ | |
8fec560d | 187 | struct snd_pcm_hw_constraint_list rate_list; /* limited rates */ |
1da177e4 LT |
188 | spinlock_t lock; |
189 | ||
190 | struct snd_urb_ops ops; /* callbacks (must be filled at init) */ | |
191 | }; | |
192 | ||
193 | ||
194 | struct snd_usb_stream { | |
86e07d34 TI |
195 | struct snd_usb_audio *chip; |
196 | struct snd_pcm *pcm; | |
1da177e4 LT |
197 | int pcm_index; |
198 | unsigned int fmt_type; /* USB audio format type (1-3) */ | |
86e07d34 | 199 | struct snd_usb_substream substream[2]; |
1da177e4 LT |
200 | struct list_head list; |
201 | }; | |
202 | ||
203 | ||
204 | /* | |
205 | * we keep the snd_usb_audio_t instances by ourselves for merging | |
206 | * the all interfaces on the same card as one sound device. | |
207 | */ | |
208 | ||
12aa7579 | 209 | static DEFINE_MUTEX(register_mutex); |
86e07d34 | 210 | static struct snd_usb_audio *usb_chip[SNDRV_CARDS]; |
1da177e4 LT |
211 | |
212 | ||
213 | /* | |
214 | * convert a sampling rate into our full speed format (fs/1000 in Q16.16) | |
215 | * this will overflow at approx 524 kHz | |
216 | */ | |
77933d72 | 217 | static inline unsigned get_usb_full_speed_rate(unsigned int rate) |
1da177e4 LT |
218 | { |
219 | return ((rate << 13) + 62) / 125; | |
220 | } | |
221 | ||
222 | /* | |
223 | * convert a sampling rate into USB high speed format (fs/8000 in Q16.16) | |
224 | * this will overflow at approx 4 MHz | |
225 | */ | |
77933d72 | 226 | static inline unsigned get_usb_high_speed_rate(unsigned int rate) |
1da177e4 LT |
227 | { |
228 | return ((rate << 10) + 62) / 125; | |
229 | } | |
230 | ||
231 | /* convert our full speed USB rate into sampling rate in Hz */ | |
77933d72 | 232 | static inline unsigned get_full_speed_hz(unsigned int usb_rate) |
1da177e4 LT |
233 | { |
234 | return (usb_rate * 125 + (1 << 12)) >> 13; | |
235 | } | |
236 | ||
237 | /* convert our high speed USB rate into sampling rate in Hz */ | |
77933d72 | 238 | static inline unsigned get_high_speed_hz(unsigned int usb_rate) |
1da177e4 LT |
239 | { |
240 | return (usb_rate * 125 + (1 << 9)) >> 10; | |
241 | } | |
242 | ||
243 | ||
244 | /* | |
245 | * prepare urb for full speed capture sync pipe | |
246 | * | |
247 | * fill the length and offset of each urb descriptor. | |
248 | * the fixed 10.14 frequency is passed through the pipe. | |
249 | */ | |
86e07d34 TI |
250 | static int prepare_capture_sync_urb(struct snd_usb_substream *subs, |
251 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
252 | struct urb *urb) |
253 | { | |
254 | unsigned char *cp = urb->transfer_buffer; | |
88518275 | 255 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 | 256 | |
1da177e4 | 257 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ |
ca81090a CL |
258 | urb->iso_frame_desc[0].length = 3; |
259 | urb->iso_frame_desc[0].offset = 0; | |
260 | cp[0] = subs->freqn >> 2; | |
261 | cp[1] = subs->freqn >> 10; | |
262 | cp[2] = subs->freqn >> 18; | |
1da177e4 LT |
263 | return 0; |
264 | } | |
265 | ||
266 | /* | |
267 | * prepare urb for high speed capture sync pipe | |
268 | * | |
269 | * fill the length and offset of each urb descriptor. | |
270 | * the fixed 12.13 frequency is passed as 16.16 through the pipe. | |
271 | */ | |
86e07d34 TI |
272 | static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs, |
273 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
274 | struct urb *urb) |
275 | { | |
276 | unsigned char *cp = urb->transfer_buffer; | |
88518275 | 277 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 | 278 | |
1da177e4 | 279 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ |
ca81090a CL |
280 | urb->iso_frame_desc[0].length = 4; |
281 | urb->iso_frame_desc[0].offset = 0; | |
282 | cp[0] = subs->freqn; | |
283 | cp[1] = subs->freqn >> 8; | |
284 | cp[2] = subs->freqn >> 16; | |
285 | cp[3] = subs->freqn >> 24; | |
1da177e4 LT |
286 | return 0; |
287 | } | |
288 | ||
289 | /* | |
290 | * process after capture sync complete | |
291 | * - nothing to do | |
292 | */ | |
86e07d34 TI |
293 | static int retire_capture_sync_urb(struct snd_usb_substream *subs, |
294 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
295 | struct urb *urb) |
296 | { | |
297 | return 0; | |
298 | } | |
299 | ||
300 | /* | |
301 | * prepare urb for capture data pipe | |
302 | * | |
303 | * fill the offset and length of each descriptor. | |
304 | * | |
305 | * we use a temporary buffer to write the captured data. | |
306 | * since the length of written data is determined by host, we cannot | |
307 | * write onto the pcm buffer directly... the data is thus copied | |
308 | * later at complete callback to the global buffer. | |
309 | */ | |
86e07d34 TI |
310 | static int prepare_capture_urb(struct snd_usb_substream *subs, |
311 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
312 | struct urb *urb) |
313 | { | |
314 | int i, offs; | |
88518275 | 315 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 LT |
316 | |
317 | offs = 0; | |
318 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ | |
1da177e4 LT |
319 | for (i = 0; i < ctx->packets; i++) { |
320 | urb->iso_frame_desc[i].offset = offs; | |
321 | urb->iso_frame_desc[i].length = subs->curpacksize; | |
322 | offs += subs->curpacksize; | |
1da177e4 | 323 | } |
1da177e4 | 324 | urb->transfer_buffer_length = offs; |
b263a9bd | 325 | urb->number_of_packets = ctx->packets; |
1da177e4 LT |
326 | return 0; |
327 | } | |
328 | ||
329 | /* | |
330 | * process after capture complete | |
331 | * | |
332 | * copy the data from each desctiptor to the pcm buffer, and | |
333 | * update the current position. | |
334 | */ | |
86e07d34 TI |
335 | static int retire_capture_urb(struct snd_usb_substream *subs, |
336 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
337 | struct urb *urb) |
338 | { | |
339 | unsigned long flags; | |
340 | unsigned char *cp; | |
341 | int i; | |
342 | unsigned int stride, len, oldptr; | |
b263a9bd | 343 | int period_elapsed = 0; |
1da177e4 LT |
344 | |
345 | stride = runtime->frame_bits >> 3; | |
346 | ||
347 | for (i = 0; i < urb->number_of_packets; i++) { | |
348 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
349 | if (urb->iso_frame_desc[i].status) { | |
350 | snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status); | |
351 | // continue; | |
352 | } | |
353 | len = urb->iso_frame_desc[i].actual_length / stride; | |
354 | if (! len) | |
355 | continue; | |
356 | /* update the current pointer */ | |
357 | spin_lock_irqsave(&subs->lock, flags); | |
358 | oldptr = subs->hwptr_done; | |
359 | subs->hwptr_done += len; | |
360 | if (subs->hwptr_done >= runtime->buffer_size) | |
361 | subs->hwptr_done -= runtime->buffer_size; | |
362 | subs->transfer_done += len; | |
b263a9bd CL |
363 | if (subs->transfer_done >= runtime->period_size) { |
364 | subs->transfer_done -= runtime->period_size; | |
365 | period_elapsed = 1; | |
366 | } | |
1da177e4 LT |
367 | spin_unlock_irqrestore(&subs->lock, flags); |
368 | /* copy a data chunk */ | |
369 | if (oldptr + len > runtime->buffer_size) { | |
370 | unsigned int cnt = runtime->buffer_size - oldptr; | |
371 | unsigned int blen = cnt * stride; | |
372 | memcpy(runtime->dma_area + oldptr * stride, cp, blen); | |
373 | memcpy(runtime->dma_area, cp + blen, len * stride - blen); | |
374 | } else { | |
375 | memcpy(runtime->dma_area + oldptr * stride, cp, len * stride); | |
376 | } | |
1da177e4 | 377 | } |
b263a9bd CL |
378 | if (period_elapsed) |
379 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1da177e4 LT |
380 | return 0; |
381 | } | |
382 | ||
e4f8e656 CL |
383 | /* |
384 | * Process after capture complete when paused. Nothing to do. | |
385 | */ | |
386 | static int retire_paused_capture_urb(struct snd_usb_substream *subs, | |
387 | struct snd_pcm_runtime *runtime, | |
388 | struct urb *urb) | |
389 | { | |
390 | return 0; | |
391 | } | |
392 | ||
1da177e4 LT |
393 | |
394 | /* | |
395 | * prepare urb for full speed playback sync pipe | |
396 | * | |
397 | * set up the offset and length to receive the current frequency. | |
398 | */ | |
399 | ||
86e07d34 TI |
400 | static int prepare_playback_sync_urb(struct snd_usb_substream *subs, |
401 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
402 | struct urb *urb) |
403 | { | |
88518275 | 404 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 | 405 | |
1da177e4 | 406 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ |
ca81090a CL |
407 | urb->iso_frame_desc[0].length = 3; |
408 | urb->iso_frame_desc[0].offset = 0; | |
1da177e4 LT |
409 | return 0; |
410 | } | |
411 | ||
412 | /* | |
413 | * prepare urb for high speed playback sync pipe | |
414 | * | |
415 | * set up the offset and length to receive the current frequency. | |
416 | */ | |
417 | ||
86e07d34 TI |
418 | static int prepare_playback_sync_urb_hs(struct snd_usb_substream *subs, |
419 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
420 | struct urb *urb) |
421 | { | |
88518275 | 422 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 | 423 | |
1da177e4 | 424 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ |
ca81090a CL |
425 | urb->iso_frame_desc[0].length = 4; |
426 | urb->iso_frame_desc[0].offset = 0; | |
1da177e4 LT |
427 | return 0; |
428 | } | |
429 | ||
430 | /* | |
431 | * process after full speed playback sync complete | |
432 | * | |
433 | * retrieve the current 10.14 frequency from pipe, and set it. | |
434 | * the value is referred in prepare_playback_urb(). | |
435 | */ | |
86e07d34 TI |
436 | static int retire_playback_sync_urb(struct snd_usb_substream *subs, |
437 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
438 | struct urb *urb) |
439 | { | |
ca81090a | 440 | unsigned int f; |
1da177e4 LT |
441 | unsigned long flags; |
442 | ||
ca81090a CL |
443 | if (urb->iso_frame_desc[0].status == 0 && |
444 | urb->iso_frame_desc[0].actual_length == 3) { | |
445 | f = combine_triple((u8*)urb->transfer_buffer) << 2; | |
50cdbf15 CL |
446 | if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { |
447 | spin_lock_irqsave(&subs->lock, flags); | |
448 | subs->freqm = f; | |
449 | spin_unlock_irqrestore(&subs->lock, flags); | |
1da177e4 | 450 | } |
1da177e4 LT |
451 | } |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | /* | |
457 | * process after high speed playback sync complete | |
458 | * | |
459 | * retrieve the current 12.13 frequency from pipe, and set it. | |
460 | * the value is referred in prepare_playback_urb(). | |
461 | */ | |
86e07d34 TI |
462 | static int retire_playback_sync_urb_hs(struct snd_usb_substream *subs, |
463 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
464 | struct urb *urb) |
465 | { | |
ca81090a | 466 | unsigned int f; |
1da177e4 LT |
467 | unsigned long flags; |
468 | ||
ca81090a CL |
469 | if (urb->iso_frame_desc[0].status == 0 && |
470 | urb->iso_frame_desc[0].actual_length == 4) { | |
471 | f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff; | |
50cdbf15 CL |
472 | if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { |
473 | spin_lock_irqsave(&subs->lock, flags); | |
474 | subs->freqm = f; | |
475 | spin_unlock_irqrestore(&subs->lock, flags); | |
476 | } | |
1da177e4 LT |
477 | } |
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
d513202e CL |
482 | /* |
483 | * process after E-Mu 0202/0404 high speed playback sync complete | |
484 | * | |
485 | * These devices return the number of samples per packet instead of the number | |
486 | * of samples per microframe. | |
487 | */ | |
488 | static int retire_playback_sync_urb_hs_emu(struct snd_usb_substream *subs, | |
489 | struct snd_pcm_runtime *runtime, | |
490 | struct urb *urb) | |
491 | { | |
492 | unsigned int f; | |
493 | unsigned long flags; | |
494 | ||
495 | if (urb->iso_frame_desc[0].status == 0 && | |
496 | urb->iso_frame_desc[0].actual_length == 4) { | |
497 | f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff; | |
498 | f >>= subs->datainterval; | |
499 | if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { | |
500 | spin_lock_irqsave(&subs->lock, flags); | |
501 | subs->freqm = f; | |
502 | spin_unlock_irqrestore(&subs->lock, flags); | |
503 | } | |
504 | } | |
505 | ||
506 | return 0; | |
507 | } | |
508 | ||
9568f461 CL |
509 | /* determine the number of frames in the next packet */ |
510 | static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs) | |
511 | { | |
512 | if (subs->fill_max) | |
513 | return subs->maxframesize; | |
514 | else { | |
515 | subs->phase = (subs->phase & 0xffff) | |
516 | + (subs->freqm << subs->datainterval); | |
517 | return min(subs->phase >> 16, subs->maxframesize); | |
518 | } | |
519 | } | |
520 | ||
b55bbf06 | 521 | /* |
e4f8e656 | 522 | * Prepare urb for streaming before playback starts or when paused. |
b55bbf06 | 523 | * |
e4f8e656 | 524 | * We don't have any data, so we send a frame of silence. |
b55bbf06 | 525 | */ |
e4f8e656 CL |
526 | static int prepare_nodata_playback_urb(struct snd_usb_substream *subs, |
527 | struct snd_pcm_runtime *runtime, | |
528 | struct urb *urb) | |
b55bbf06 | 529 | { |
4b284928 | 530 | unsigned int i, offs, counts; |
86e07d34 | 531 | struct snd_urb_ctx *ctx = urb->context; |
4b284928 | 532 | int stride = runtime->frame_bits >> 3; |
b55bbf06 | 533 | |
4b284928 | 534 | offs = 0; |
b55bbf06 CL |
535 | urb->dev = ctx->subs->dev; |
536 | urb->number_of_packets = subs->packs_per_ms; | |
537 | for (i = 0; i < subs->packs_per_ms; ++i) { | |
9568f461 | 538 | counts = snd_usb_audio_next_packet_size(subs); |
4b284928 CL |
539 | urb->iso_frame_desc[i].offset = offs * stride; |
540 | urb->iso_frame_desc[i].length = counts * stride; | |
541 | offs += counts; | |
b55bbf06 | 542 | } |
4b284928 CL |
543 | urb->transfer_buffer_length = offs * stride; |
544 | memset(urb->transfer_buffer, | |
545 | subs->cur_audiofmt->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0, | |
546 | offs * stride); | |
b55bbf06 CL |
547 | return 0; |
548 | } | |
549 | ||
1da177e4 LT |
550 | /* |
551 | * prepare urb for playback data pipe | |
552 | * | |
7efd8bc8 CL |
553 | * Since a URB can handle only a single linear buffer, we must use double |
554 | * buffering when the data to be transferred overflows the buffer boundary. | |
555 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
556 | * for all URBs. | |
1da177e4 | 557 | */ |
86e07d34 TI |
558 | static int prepare_playback_urb(struct snd_usb_substream *subs, |
559 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
560 | struct urb *urb) |
561 | { | |
562 | int i, stride, offs; | |
563 | unsigned int counts; | |
564 | unsigned long flags; | |
7efd8bc8 | 565 | int period_elapsed = 0; |
88518275 | 566 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 LT |
567 | |
568 | stride = runtime->frame_bits >> 3; | |
569 | ||
570 | offs = 0; | |
571 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ | |
572 | urb->number_of_packets = 0; | |
573 | spin_lock_irqsave(&subs->lock, flags); | |
574 | for (i = 0; i < ctx->packets; i++) { | |
9568f461 | 575 | counts = snd_usb_audio_next_packet_size(subs); |
1da177e4 LT |
576 | /* set up descriptor */ |
577 | urb->iso_frame_desc[i].offset = offs * stride; | |
578 | urb->iso_frame_desc[i].length = counts * stride; | |
579 | offs += counts; | |
580 | urb->number_of_packets++; | |
7efd8bc8 CL |
581 | subs->transfer_done += counts; |
582 | if (subs->transfer_done >= runtime->period_size) { | |
583 | subs->transfer_done -= runtime->period_size; | |
584 | period_elapsed = 1; | |
1da177e4 | 585 | if (subs->fmt_type == USB_FORMAT_TYPE_II) { |
7efd8bc8 CL |
586 | if (subs->transfer_done > 0) { |
587 | /* FIXME: fill-max mode is not | |
588 | * supported yet */ | |
589 | offs -= subs->transfer_done; | |
590 | counts -= subs->transfer_done; | |
591 | urb->iso_frame_desc[i].length = | |
592 | counts * stride; | |
593 | subs->transfer_done = 0; | |
1da177e4 LT |
594 | } |
595 | i++; | |
596 | if (i < ctx->packets) { | |
597 | /* add a transfer delimiter */ | |
7efd8bc8 CL |
598 | urb->iso_frame_desc[i].offset = |
599 | offs * stride; | |
1da177e4 LT |
600 | urb->iso_frame_desc[i].length = 0; |
601 | urb->number_of_packets++; | |
602 | } | |
9624ea81 | 603 | break; |
1da177e4 | 604 | } |
1da177e4 | 605 | } |
9624ea81 CL |
606 | /* finish at the frame boundary at/after the period boundary */ |
607 | if (period_elapsed && | |
608 | (i & (subs->packs_per_ms - 1)) == subs->packs_per_ms - 1) | |
609 | break; | |
1da177e4 | 610 | } |
7efd8bc8 CL |
611 | if (subs->hwptr_done + offs > runtime->buffer_size) { |
612 | /* err, the transferred area goes over buffer boundary. */ | |
613 | unsigned int len = runtime->buffer_size - subs->hwptr_done; | |
614 | memcpy(urb->transfer_buffer, | |
615 | runtime->dma_area + subs->hwptr_done * stride, | |
616 | len * stride); | |
617 | memcpy(urb->transfer_buffer + len * stride, | |
618 | runtime->dma_area, | |
619 | (offs - len) * stride); | |
1da177e4 | 620 | } else { |
7efd8bc8 CL |
621 | memcpy(urb->transfer_buffer, |
622 | runtime->dma_area + subs->hwptr_done * stride, | |
623 | offs * stride); | |
1da177e4 | 624 | } |
7efd8bc8 CL |
625 | subs->hwptr_done += offs; |
626 | if (subs->hwptr_done >= runtime->buffer_size) | |
627 | subs->hwptr_done -= runtime->buffer_size; | |
1da177e4 LT |
628 | spin_unlock_irqrestore(&subs->lock, flags); |
629 | urb->transfer_buffer_length = offs * stride; | |
b55bbf06 CL |
630 | if (period_elapsed) |
631 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1da177e4 LT |
632 | return 0; |
633 | } | |
634 | ||
635 | /* | |
636 | * process after playback data complete | |
7efd8bc8 | 637 | * - nothing to do |
1da177e4 | 638 | */ |
86e07d34 TI |
639 | static int retire_playback_urb(struct snd_usb_substream *subs, |
640 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
641 | struct urb *urb) |
642 | { | |
1da177e4 LT |
643 | return 0; |
644 | } | |
645 | ||
646 | ||
647 | /* | |
648 | */ | |
649 | static struct snd_urb_ops audio_urb_ops[2] = { | |
650 | { | |
e4f8e656 | 651 | .prepare = prepare_nodata_playback_urb, |
1da177e4 LT |
652 | .retire = retire_playback_urb, |
653 | .prepare_sync = prepare_playback_sync_urb, | |
654 | .retire_sync = retire_playback_sync_urb, | |
655 | }, | |
656 | { | |
657 | .prepare = prepare_capture_urb, | |
658 | .retire = retire_capture_urb, | |
659 | .prepare_sync = prepare_capture_sync_urb, | |
660 | .retire_sync = retire_capture_sync_urb, | |
661 | }, | |
662 | }; | |
663 | ||
664 | static struct snd_urb_ops audio_urb_ops_high_speed[2] = { | |
665 | { | |
e4f8e656 | 666 | .prepare = prepare_nodata_playback_urb, |
1da177e4 LT |
667 | .retire = retire_playback_urb, |
668 | .prepare_sync = prepare_playback_sync_urb_hs, | |
669 | .retire_sync = retire_playback_sync_urb_hs, | |
670 | }, | |
671 | { | |
672 | .prepare = prepare_capture_urb, | |
673 | .retire = retire_capture_urb, | |
674 | .prepare_sync = prepare_capture_sync_urb_hs, | |
675 | .retire_sync = retire_capture_sync_urb, | |
676 | }, | |
677 | }; | |
678 | ||
679 | /* | |
680 | * complete callback from data urb | |
681 | */ | |
7d12e780 | 682 | static void snd_complete_urb(struct urb *urb) |
1da177e4 | 683 | { |
88518275 | 684 | struct snd_urb_ctx *ctx = urb->context; |
86e07d34 TI |
685 | struct snd_usb_substream *subs = ctx->subs; |
686 | struct snd_pcm_substream *substream = ctx->subs->pcm_substream; | |
1da177e4 LT |
687 | int err = 0; |
688 | ||
689 | if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) || | |
690 | ! subs->running || /* can be stopped during retire callback */ | |
691 | (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 || | |
692 | (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { | |
693 | clear_bit(ctx->index, &subs->active_mask); | |
694 | if (err < 0) { | |
695 | snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err); | |
696 | snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
697 | } | |
698 | } | |
699 | } | |
700 | ||
701 | ||
702 | /* | |
703 | * complete callback from sync urb | |
704 | */ | |
7d12e780 | 705 | static void snd_complete_sync_urb(struct urb *urb) |
1da177e4 | 706 | { |
88518275 | 707 | struct snd_urb_ctx *ctx = urb->context; |
86e07d34 TI |
708 | struct snd_usb_substream *subs = ctx->subs; |
709 | struct snd_pcm_substream *substream = ctx->subs->pcm_substream; | |
1da177e4 LT |
710 | int err = 0; |
711 | ||
712 | if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) || | |
713 | ! subs->running || /* can be stopped during retire callback */ | |
714 | (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 || | |
715 | (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { | |
716 | clear_bit(ctx->index + 16, &subs->active_mask); | |
717 | if (err < 0) { | |
718 | snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err); | |
719 | snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
720 | } | |
721 | } | |
722 | } | |
723 | ||
724 | ||
6207e51b | 725 | /* get the physical page pointer at the given offset */ |
86e07d34 | 726 | static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs, |
6207e51b CL |
727 | unsigned long offset) |
728 | { | |
729 | void *pageptr = subs->runtime->dma_area + offset; | |
730 | return vmalloc_to_page(pageptr); | |
731 | } | |
732 | ||
733 | /* allocate virtual buffer; may be called more than once */ | |
86e07d34 | 734 | static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size) |
6207e51b | 735 | { |
86e07d34 | 736 | struct snd_pcm_runtime *runtime = subs->runtime; |
6207e51b CL |
737 | if (runtime->dma_area) { |
738 | if (runtime->dma_bytes >= size) | |
739 | return 0; /* already large enough */ | |
b1d5776d | 740 | vfree(runtime->dma_area); |
6207e51b | 741 | } |
b1d5776d | 742 | runtime->dma_area = vmalloc(size); |
6207e51b CL |
743 | if (! runtime->dma_area) |
744 | return -ENOMEM; | |
745 | runtime->dma_bytes = size; | |
746 | return 0; | |
747 | } | |
748 | ||
749 | /* free virtual buffer; may be called more than once */ | |
86e07d34 | 750 | static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs) |
6207e51b | 751 | { |
86e07d34 | 752 | struct snd_pcm_runtime *runtime = subs->runtime; |
9c4be3d3 JJ |
753 | |
754 | vfree(runtime->dma_area); | |
755 | runtime->dma_area = NULL; | |
6207e51b CL |
756 | return 0; |
757 | } | |
758 | ||
759 | ||
1da177e4 LT |
760 | /* |
761 | * unlink active urbs. | |
762 | */ | |
86e07d34 | 763 | static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep) |
1da177e4 LT |
764 | { |
765 | unsigned int i; | |
766 | int async; | |
767 | ||
768 | subs->running = 0; | |
769 | ||
770 | if (!force && subs->stream->chip->shutdown) /* to be sure... */ | |
771 | return -EBADFD; | |
772 | ||
773 | async = !can_sleep && async_unlink; | |
774 | ||
775 | if (! async && in_interrupt()) | |
776 | return 0; | |
777 | ||
778 | for (i = 0; i < subs->nurbs; i++) { | |
779 | if (test_bit(i, &subs->active_mask)) { | |
780 | if (! test_and_set_bit(i, &subs->unlink_mask)) { | |
781 | struct urb *u = subs->dataurb[i].urb; | |
b375a049 | 782 | if (async) |
1da177e4 | 783 | usb_unlink_urb(u); |
b375a049 | 784 | else |
1da177e4 LT |
785 | usb_kill_urb(u); |
786 | } | |
787 | } | |
788 | } | |
789 | if (subs->syncpipe) { | |
790 | for (i = 0; i < SYNC_URBS; i++) { | |
791 | if (test_bit(i+16, &subs->active_mask)) { | |
792 | if (! test_and_set_bit(i+16, &subs->unlink_mask)) { | |
793 | struct urb *u = subs->syncurb[i].urb; | |
b375a049 | 794 | if (async) |
1da177e4 | 795 | usb_unlink_urb(u); |
b375a049 | 796 | else |
1da177e4 LT |
797 | usb_kill_urb(u); |
798 | } | |
799 | } | |
800 | } | |
801 | } | |
802 | return 0; | |
803 | } | |
804 | ||
805 | ||
32e19e88 CL |
806 | static const char *usb_error_string(int err) |
807 | { | |
808 | switch (err) { | |
809 | case -ENODEV: | |
810 | return "no device"; | |
811 | case -ENOENT: | |
812 | return "endpoint not enabled"; | |
813 | case -EPIPE: | |
814 | return "endpoint stalled"; | |
815 | case -ENOSPC: | |
816 | return "not enough bandwidth"; | |
817 | case -ESHUTDOWN: | |
818 | return "device disabled"; | |
819 | case -EHOSTUNREACH: | |
820 | return "device suspended"; | |
3e964432 CL |
821 | #ifndef CONFIG_USB_EHCI_SPLIT_ISO |
822 | case -ENOSYS: | |
823 | return "enable CONFIG_USB_EHCI_SPLIT_ISO to play through a hub"; | |
824 | #endif | |
32e19e88 CL |
825 | case -EINVAL: |
826 | case -EAGAIN: | |
827 | case -EFBIG: | |
828 | case -EMSGSIZE: | |
829 | return "internal error"; | |
830 | default: | |
831 | return "unknown error"; | |
832 | } | |
833 | } | |
834 | ||
1da177e4 LT |
835 | /* |
836 | * set up and start data/sync urbs | |
837 | */ | |
86e07d34 | 838 | static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime) |
1da177e4 LT |
839 | { |
840 | unsigned int i; | |
841 | int err; | |
842 | ||
843 | if (subs->stream->chip->shutdown) | |
844 | return -EBADFD; | |
845 | ||
846 | for (i = 0; i < subs->nurbs; i++) { | |
847 | snd_assert(subs->dataurb[i].urb, return -EINVAL); | |
848 | if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) { | |
849 | snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i); | |
850 | goto __error; | |
851 | } | |
852 | } | |
853 | if (subs->syncpipe) { | |
854 | for (i = 0; i < SYNC_URBS; i++) { | |
855 | snd_assert(subs->syncurb[i].urb, return -EINVAL); | |
856 | if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) { | |
857 | snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i); | |
858 | goto __error; | |
859 | } | |
860 | } | |
861 | } | |
862 | ||
863 | subs->active_mask = 0; | |
864 | subs->unlink_mask = 0; | |
865 | subs->running = 1; | |
866 | for (i = 0; i < subs->nurbs; i++) { | |
32e19e88 CL |
867 | err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC); |
868 | if (err < 0) { | |
869 | snd_printk(KERN_ERR "cannot submit datapipe " | |
870 | "for urb %d, error %d: %s\n", | |
871 | i, err, usb_error_string(err)); | |
1da177e4 LT |
872 | goto __error; |
873 | } | |
874 | set_bit(i, &subs->active_mask); | |
875 | } | |
876 | if (subs->syncpipe) { | |
877 | for (i = 0; i < SYNC_URBS; i++) { | |
32e19e88 CL |
878 | err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC); |
879 | if (err < 0) { | |
880 | snd_printk(KERN_ERR "cannot submit syncpipe " | |
881 | "for urb %d, error %d: %s\n", | |
882 | i, err, usb_error_string(err)); | |
1da177e4 LT |
883 | goto __error; |
884 | } | |
885 | set_bit(i + 16, &subs->active_mask); | |
886 | } | |
887 | } | |
888 | return 0; | |
889 | ||
890 | __error: | |
891 | // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN); | |
892 | deactivate_urbs(subs, 0, 0); | |
893 | return -EPIPE; | |
894 | } | |
895 | ||
896 | ||
897 | /* | |
898 | * wait until all urbs are processed. | |
899 | */ | |
86e07d34 | 900 | static int wait_clear_urbs(struct snd_usb_substream *subs) |
1da177e4 | 901 | { |
b27c187f | 902 | unsigned long end_time = jiffies + msecs_to_jiffies(1000); |
1da177e4 LT |
903 | unsigned int i; |
904 | int alive; | |
905 | ||
906 | do { | |
907 | alive = 0; | |
908 | for (i = 0; i < subs->nurbs; i++) { | |
909 | if (test_bit(i, &subs->active_mask)) | |
910 | alive++; | |
911 | } | |
912 | if (subs->syncpipe) { | |
913 | for (i = 0; i < SYNC_URBS; i++) { | |
914 | if (test_bit(i + 16, &subs->active_mask)) | |
915 | alive++; | |
916 | } | |
917 | } | |
918 | if (! alive) | |
919 | break; | |
8433a509 | 920 | schedule_timeout_uninterruptible(1); |
b27c187f | 921 | } while (time_before(jiffies, end_time)); |
1da177e4 LT |
922 | if (alive) |
923 | snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive); | |
924 | return 0; | |
925 | } | |
926 | ||
927 | ||
928 | /* | |
929 | * return the current pcm pointer. just return the hwptr_done value. | |
930 | */ | |
86e07d34 | 931 | static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) |
1da177e4 | 932 | { |
86e07d34 | 933 | struct snd_usb_substream *subs; |
daa150ef CL |
934 | snd_pcm_uframes_t hwptr_done; |
935 | ||
86e07d34 | 936 | subs = (struct snd_usb_substream *)substream->runtime->private_data; |
daa150ef CL |
937 | spin_lock(&subs->lock); |
938 | hwptr_done = subs->hwptr_done; | |
939 | spin_unlock(&subs->lock); | |
940 | return hwptr_done; | |
1da177e4 LT |
941 | } |
942 | ||
943 | ||
944 | /* | |
b55bbf06 | 945 | * start/stop playback substream |
1da177e4 | 946 | */ |
86e07d34 | 947 | static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream *substream, |
b55bbf06 | 948 | int cmd) |
1da177e4 | 949 | { |
86e07d34 | 950 | struct snd_usb_substream *subs = substream->runtime->private_data; |
b55bbf06 CL |
951 | |
952 | switch (cmd) { | |
953 | case SNDRV_PCM_TRIGGER_START: | |
e4f8e656 | 954 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
b55bbf06 CL |
955 | subs->ops.prepare = prepare_playback_urb; |
956 | return 0; | |
957 | case SNDRV_PCM_TRIGGER_STOP: | |
958 | return deactivate_urbs(subs, 0, 0); | |
e4f8e656 CL |
959 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
960 | subs->ops.prepare = prepare_nodata_playback_urb; | |
961 | return 0; | |
b55bbf06 CL |
962 | default: |
963 | return -EINVAL; | |
964 | } | |
965 | } | |
966 | ||
967 | /* | |
968 | * start/stop capture substream | |
969 | */ | |
86e07d34 | 970 | static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream *substream, |
b55bbf06 CL |
971 | int cmd) |
972 | { | |
86e07d34 | 973 | struct snd_usb_substream *subs = substream->runtime->private_data; |
1da177e4 LT |
974 | |
975 | switch (cmd) { | |
976 | case SNDRV_PCM_TRIGGER_START: | |
e4f8e656 | 977 | subs->ops.retire = retire_capture_urb; |
b55bbf06 | 978 | return start_urbs(subs, substream->runtime); |
1da177e4 | 979 | case SNDRV_PCM_TRIGGER_STOP: |
b55bbf06 | 980 | return deactivate_urbs(subs, 0, 0); |
e4f8e656 CL |
981 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
982 | subs->ops.retire = retire_paused_capture_urb; | |
983 | return 0; | |
984 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
985 | subs->ops.retire = retire_capture_urb; | |
986 | return 0; | |
1da177e4 | 987 | default: |
b55bbf06 | 988 | return -EINVAL; |
1da177e4 | 989 | } |
1da177e4 LT |
990 | } |
991 | ||
992 | ||
993 | /* | |
994 | * release a urb data | |
995 | */ | |
86e07d34 | 996 | static void release_urb_ctx(struct snd_urb_ctx *u) |
1da177e4 LT |
997 | { |
998 | if (u->urb) { | |
55851f73 CL |
999 | if (u->buffer_size) |
1000 | usb_buffer_free(u->subs->dev, u->buffer_size, | |
1001 | u->urb->transfer_buffer, | |
1002 | u->urb->transfer_dma); | |
1da177e4 LT |
1003 | usb_free_urb(u->urb); |
1004 | u->urb = NULL; | |
1005 | } | |
1da177e4 LT |
1006 | } |
1007 | ||
1008 | /* | |
1009 | * release a substream | |
1010 | */ | |
86e07d34 | 1011 | static void release_substream_urbs(struct snd_usb_substream *subs, int force) |
1da177e4 LT |
1012 | { |
1013 | int i; | |
1014 | ||
1015 | /* stop urbs (to be sure) */ | |
1016 | deactivate_urbs(subs, force, 1); | |
1017 | wait_clear_urbs(subs); | |
1018 | ||
1019 | for (i = 0; i < MAX_URBS; i++) | |
1020 | release_urb_ctx(&subs->dataurb[i]); | |
1021 | for (i = 0; i < SYNC_URBS; i++) | |
1022 | release_urb_ctx(&subs->syncurb[i]); | |
55851f73 CL |
1023 | usb_buffer_free(subs->dev, SYNC_URBS * 4, |
1024 | subs->syncbuf, subs->sync_dma); | |
1025 | subs->syncbuf = NULL; | |
1da177e4 LT |
1026 | subs->nurbs = 0; |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * initialize a substream for plaback/capture | |
1031 | */ | |
86e07d34 | 1032 | static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int period_bytes, |
1da177e4 LT |
1033 | unsigned int rate, unsigned int frame_bits) |
1034 | { | |
1035 | unsigned int maxsize, n, i; | |
1036 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
a93bf990 | 1037 | unsigned int npacks[MAX_URBS], urb_packs, total_packs, packs_per_ms; |
1da177e4 LT |
1038 | |
1039 | /* calculate the frequency in 16.16 format */ | |
1040 | if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) | |
1041 | subs->freqn = get_usb_full_speed_rate(rate); | |
1042 | else | |
1043 | subs->freqn = get_usb_high_speed_rate(rate); | |
1044 | subs->freqm = subs->freqn; | |
573567e0 CL |
1045 | /* calculate max. frequency */ |
1046 | if (subs->maxpacksize) { | |
1047 | /* whatever fits into a max. size packet */ | |
1da177e4 | 1048 | maxsize = subs->maxpacksize; |
573567e0 CL |
1049 | subs->freqmax = (maxsize / (frame_bits >> 3)) |
1050 | << (16 - subs->datainterval); | |
1051 | } else { | |
1052 | /* no max. packet size: just take 25% higher than nominal */ | |
1053 | subs->freqmax = subs->freqn + (subs->freqn >> 2); | |
1054 | maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3)) | |
1055 | >> (16 - subs->datainterval); | |
1da177e4 | 1056 | } |
573567e0 | 1057 | subs->phase = 0; |
1da177e4 LT |
1058 | |
1059 | if (subs->fill_max) | |
1060 | subs->curpacksize = subs->maxpacksize; | |
1061 | else | |
1062 | subs->curpacksize = maxsize; | |
1063 | ||
a93bf990 CL |
1064 | if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) |
1065 | packs_per_ms = 8 >> subs->datainterval; | |
1066 | else | |
1067 | packs_per_ms = 1; | |
9624ea81 | 1068 | subs->packs_per_ms = packs_per_ms; |
a93bf990 | 1069 | |
71d848ca | 1070 | if (is_playback) { |
1da177e4 | 1071 | urb_packs = nrpacks; |
71d848ca CL |
1072 | urb_packs = max(urb_packs, (unsigned int)MIN_PACKS_URB); |
1073 | urb_packs = min(urb_packs, (unsigned int)MAX_PACKS); | |
1074 | } else | |
15a24c07 | 1075 | urb_packs = 1; |
a93bf990 | 1076 | urb_packs *= packs_per_ms; |
1da177e4 | 1077 | |
1da177e4 | 1078 | /* decide how many packets to be used */ |
15a24c07 | 1079 | if (is_playback) { |
d6db392e CL |
1080 | unsigned int minsize; |
1081 | /* determine how small a packet can be */ | |
1082 | minsize = (subs->freqn >> (16 - subs->datainterval)) | |
1083 | * (frame_bits >> 3); | |
7efd8bc8 | 1084 | /* with sync from device, assume it can be 12% lower */ |
d6db392e | 1085 | if (subs->syncpipe) |
7efd8bc8 | 1086 | minsize -= minsize >> 3; |
d6db392e CL |
1087 | minsize = max(minsize, 1u); |
1088 | total_packs = (period_bytes + minsize - 1) / minsize; | |
a93bf990 CL |
1089 | /* round up to multiple of packs_per_ms */ |
1090 | total_packs = (total_packs + packs_per_ms - 1) | |
1091 | & ~(packs_per_ms - 1); | |
1092 | /* we need at least two URBs for queueing */ | |
1093 | if (total_packs < 2 * MIN_PACKS_URB * packs_per_ms) | |
1094 | total_packs = 2 * MIN_PACKS_URB * packs_per_ms; | |
15a24c07 CL |
1095 | } else { |
1096 | total_packs = MAX_URBS * urb_packs; | |
1097 | } | |
1da177e4 LT |
1098 | subs->nurbs = (total_packs + urb_packs - 1) / urb_packs; |
1099 | if (subs->nurbs > MAX_URBS) { | |
1100 | /* too much... */ | |
1101 | subs->nurbs = MAX_URBS; | |
1102 | total_packs = MAX_URBS * urb_packs; | |
1103 | } | |
1104 | n = total_packs; | |
1105 | for (i = 0; i < subs->nurbs; i++) { | |
1106 | npacks[i] = n > urb_packs ? urb_packs : n; | |
1107 | n -= urb_packs; | |
1108 | } | |
1109 | if (subs->nurbs <= 1) { | |
1110 | /* too little - we need at least two packets | |
1111 | * to ensure contiguous playback/capture | |
1112 | */ | |
1113 | subs->nurbs = 2; | |
1114 | npacks[0] = (total_packs + 1) / 2; | |
1115 | npacks[1] = total_packs - npacks[0]; | |
a93bf990 | 1116 | } else if (npacks[subs->nurbs-1] < MIN_PACKS_URB * packs_per_ms) { |
1da177e4 LT |
1117 | /* the last packet is too small.. */ |
1118 | if (subs->nurbs > 2) { | |
1119 | /* merge to the first one */ | |
1120 | npacks[0] += npacks[subs->nurbs - 1]; | |
1121 | subs->nurbs--; | |
1122 | } else { | |
1123 | /* divide to two */ | |
1124 | subs->nurbs = 2; | |
1125 | npacks[0] = (total_packs + 1) / 2; | |
1126 | npacks[1] = total_packs - npacks[0]; | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | /* allocate and initialize data urbs */ | |
1131 | for (i = 0; i < subs->nurbs; i++) { | |
86e07d34 | 1132 | struct snd_urb_ctx *u = &subs->dataurb[i]; |
1da177e4 LT |
1133 | u->index = i; |
1134 | u->subs = subs; | |
1da177e4 | 1135 | u->packets = npacks[i]; |
55851f73 | 1136 | u->buffer_size = maxsize * u->packets; |
1da177e4 LT |
1137 | if (subs->fmt_type == USB_FORMAT_TYPE_II) |
1138 | u->packets++; /* for transfer delimiter */ | |
1da177e4 | 1139 | u->urb = usb_alloc_urb(u->packets, GFP_KERNEL); |
55851f73 CL |
1140 | if (! u->urb) |
1141 | goto out_of_memory; | |
1142 | u->urb->transfer_buffer = | |
1143 | usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL, | |
1144 | &u->urb->transfer_dma); | |
1145 | if (! u->urb->transfer_buffer) | |
1146 | goto out_of_memory; | |
1da177e4 | 1147 | u->urb->pipe = subs->datapipe; |
55851f73 | 1148 | u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; |
573567e0 | 1149 | u->urb->interval = 1 << subs->datainterval; |
1da177e4 | 1150 | u->urb->context = u; |
3527a008 | 1151 | u->urb->complete = snd_complete_urb; |
1da177e4 LT |
1152 | } |
1153 | ||
1154 | if (subs->syncpipe) { | |
1155 | /* allocate and initialize sync urbs */ | |
55851f73 CL |
1156 | subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4, |
1157 | GFP_KERNEL, &subs->sync_dma); | |
1158 | if (! subs->syncbuf) | |
1159 | goto out_of_memory; | |
1da177e4 | 1160 | for (i = 0; i < SYNC_URBS; i++) { |
86e07d34 | 1161 | struct snd_urb_ctx *u = &subs->syncurb[i]; |
1da177e4 LT |
1162 | u->index = i; |
1163 | u->subs = subs; | |
ca81090a CL |
1164 | u->packets = 1; |
1165 | u->urb = usb_alloc_urb(1, GFP_KERNEL); | |
55851f73 CL |
1166 | if (! u->urb) |
1167 | goto out_of_memory; | |
ca81090a | 1168 | u->urb->transfer_buffer = subs->syncbuf + i * 4; |
55851f73 | 1169 | u->urb->transfer_dma = subs->sync_dma + i * 4; |
ca81090a | 1170 | u->urb->transfer_buffer_length = 4; |
1da177e4 | 1171 | u->urb->pipe = subs->syncpipe; |
55851f73 CL |
1172 | u->urb->transfer_flags = URB_ISO_ASAP | |
1173 | URB_NO_TRANSFER_DMA_MAP; | |
ca81090a | 1174 | u->urb->number_of_packets = 1; |
1149a64f | 1175 | u->urb->interval = 1 << subs->syncinterval; |
1da177e4 | 1176 | u->urb->context = u; |
3527a008 | 1177 | u->urb->complete = snd_complete_sync_urb; |
1da177e4 LT |
1178 | } |
1179 | } | |
1180 | return 0; | |
55851f73 CL |
1181 | |
1182 | out_of_memory: | |
1183 | release_substream_urbs(subs, 0); | |
1184 | return -ENOMEM; | |
1da177e4 LT |
1185 | } |
1186 | ||
1187 | ||
1188 | /* | |
1189 | * find a matching audio format | |
1190 | */ | |
86e07d34 | 1191 | static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format, |
1da177e4 LT |
1192 | unsigned int rate, unsigned int channels) |
1193 | { | |
1194 | struct list_head *p; | |
1195 | struct audioformat *found = NULL; | |
1196 | int cur_attr = 0, attr; | |
1197 | ||
1198 | list_for_each(p, &subs->fmt_list) { | |
1199 | struct audioformat *fp; | |
1200 | fp = list_entry(p, struct audioformat, list); | |
1201 | if (fp->format != format || fp->channels != channels) | |
1202 | continue; | |
1203 | if (rate < fp->rate_min || rate > fp->rate_max) | |
1204 | continue; | |
1205 | if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { | |
1206 | unsigned int i; | |
1207 | for (i = 0; i < fp->nr_rates; i++) | |
1208 | if (fp->rate_table[i] == rate) | |
1209 | break; | |
1210 | if (i >= fp->nr_rates) | |
1211 | continue; | |
1212 | } | |
1213 | attr = fp->ep_attr & EP_ATTR_MASK; | |
1214 | if (! found) { | |
1215 | found = fp; | |
1216 | cur_attr = attr; | |
1217 | continue; | |
1218 | } | |
1219 | /* avoid async out and adaptive in if the other method | |
1220 | * supports the same format. | |
1221 | * this is a workaround for the case like | |
1222 | * M-audio audiophile USB. | |
1223 | */ | |
1224 | if (attr != cur_attr) { | |
1225 | if ((attr == EP_ATTR_ASYNC && | |
1226 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
1227 | (attr == EP_ATTR_ADAPTIVE && | |
1228 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) | |
1229 | continue; | |
1230 | if ((cur_attr == EP_ATTR_ASYNC && | |
1231 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
1232 | (cur_attr == EP_ATTR_ADAPTIVE && | |
1233 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { | |
1234 | found = fp; | |
1235 | cur_attr = attr; | |
1236 | continue; | |
1237 | } | |
1238 | } | |
1239 | /* find the format with the largest max. packet size */ | |
1240 | if (fp->maxpacksize > found->maxpacksize) { | |
1241 | found = fp; | |
1242 | cur_attr = attr; | |
1243 | } | |
1244 | } | |
1245 | return found; | |
1246 | } | |
1247 | ||
1248 | ||
1249 | /* | |
1250 | * initialize the picth control and sample rate | |
1251 | */ | |
1252 | static int init_usb_pitch(struct usb_device *dev, int iface, | |
1253 | struct usb_host_interface *alts, | |
1254 | struct audioformat *fmt) | |
1255 | { | |
1256 | unsigned int ep; | |
1257 | unsigned char data[1]; | |
1258 | int err; | |
1259 | ||
1260 | ep = get_endpoint(alts, 0)->bEndpointAddress; | |
1261 | /* if endpoint has pitch control, enable it */ | |
1262 | if (fmt->attributes & EP_CS_ATTR_PITCH_CONTROL) { | |
1263 | data[0] = 1; | |
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 | PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) { | |
1267 | snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n", | |
1268 | dev->devnum, iface, ep); | |
1269 | return err; | |
1270 | } | |
1271 | } | |
1272 | return 0; | |
1273 | } | |
1274 | ||
1275 | static int init_usb_sample_rate(struct usb_device *dev, int iface, | |
1276 | struct usb_host_interface *alts, | |
1277 | struct audioformat *fmt, int rate) | |
1278 | { | |
1279 | unsigned int ep; | |
1280 | unsigned char data[3]; | |
1281 | int err; | |
1282 | ||
1283 | ep = get_endpoint(alts, 0)->bEndpointAddress; | |
1284 | /* if endpoint has sampling rate control, set it */ | |
1285 | if (fmt->attributes & EP_CS_ATTR_SAMPLE_RATE) { | |
1286 | int crate; | |
1287 | data[0] = rate; | |
1288 | data[1] = rate >> 8; | |
1289 | data[2] = rate >> 16; | |
1290 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, | |
1291 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, | |
1292 | SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) { | |
1293 | snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep 0x%x\n", | |
1294 | dev->devnum, iface, fmt->altsetting, rate, ep); | |
1295 | return err; | |
1296 | } | |
1297 | if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, | |
1298 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN, | |
1299 | SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) { | |
1300 | snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep 0x%x\n", | |
1301 | dev->devnum, iface, fmt->altsetting, ep); | |
1302 | return 0; /* some devices don't support reading */ | |
1303 | } | |
1304 | crate = data[0] | (data[1] << 8) | (data[2] << 16); | |
1305 | if (crate != rate) { | |
1306 | snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate); | |
1307 | // runtime->rate = crate; | |
1308 | } | |
1309 | } | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1313 | /* | |
1314 | * find a matching format and set up the interface | |
1315 | */ | |
86e07d34 | 1316 | static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) |
1da177e4 LT |
1317 | { |
1318 | struct usb_device *dev = subs->dev; | |
1319 | struct usb_host_interface *alts; | |
1320 | struct usb_interface_descriptor *altsd; | |
1321 | struct usb_interface *iface; | |
1322 | unsigned int ep, attr; | |
1323 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
1324 | int err; | |
1325 | ||
1326 | iface = usb_ifnum_to_if(dev, fmt->iface); | |
1327 | snd_assert(iface, return -EINVAL); | |
1328 | alts = &iface->altsetting[fmt->altset_idx]; | |
1329 | altsd = get_iface_desc(alts); | |
1330 | snd_assert(altsd->bAlternateSetting == fmt->altsetting, return -EINVAL); | |
1331 | ||
1332 | if (fmt == subs->cur_audiofmt) | |
1333 | return 0; | |
1334 | ||
1335 | /* close the old interface */ | |
1336 | if (subs->interface >= 0 && subs->interface != fmt->iface) { | |
5149fe2c ON |
1337 | if (usb_set_interface(subs->dev, subs->interface, 0) < 0) { |
1338 | snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed\n", | |
1339 | dev->devnum, fmt->iface, fmt->altsetting); | |
1340 | return -EIO; | |
1341 | } | |
1da177e4 LT |
1342 | subs->interface = -1; |
1343 | subs->format = 0; | |
1344 | } | |
1345 | ||
1346 | /* set interface */ | |
1347 | if (subs->interface != fmt->iface || subs->format != fmt->altset_idx) { | |
1348 | if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) { | |
1349 | snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n", | |
1350 | dev->devnum, fmt->iface, fmt->altsetting); | |
1351 | return -EIO; | |
1352 | } | |
1353 | snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting); | |
1354 | subs->interface = fmt->iface; | |
1355 | subs->format = fmt->altset_idx; | |
1356 | } | |
1357 | ||
1358 | /* create a data pipe */ | |
1359 | ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK; | |
1360 | if (is_playback) | |
1361 | subs->datapipe = usb_sndisocpipe(dev, ep); | |
1362 | else | |
1363 | subs->datapipe = usb_rcvisocpipe(dev, ep); | |
573567e0 CL |
1364 | if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH && |
1365 | get_endpoint(alts, 0)->bInterval >= 1 && | |
1366 | get_endpoint(alts, 0)->bInterval <= 4) | |
1367 | subs->datainterval = get_endpoint(alts, 0)->bInterval - 1; | |
1368 | else | |
1369 | subs->datainterval = 0; | |
1da177e4 LT |
1370 | subs->syncpipe = subs->syncinterval = 0; |
1371 | subs->maxpacksize = fmt->maxpacksize; | |
1372 | subs->fill_max = 0; | |
1373 | ||
1374 | /* we need a sync pipe in async OUT or adaptive IN mode */ | |
1375 | /* check the number of EP, since some devices have broken | |
1376 | * descriptors which fool us. if it has only one EP, | |
1377 | * assume it as adaptive-out or sync-in. | |
1378 | */ | |
1379 | attr = fmt->ep_attr & EP_ATTR_MASK; | |
1380 | if (((is_playback && attr == EP_ATTR_ASYNC) || | |
1381 | (! is_playback && attr == EP_ATTR_ADAPTIVE)) && | |
1382 | altsd->bNumEndpoints >= 2) { | |
1383 | /* check sync-pipe endpoint */ | |
1384 | /* ... and check descriptor size before accessing bSynchAddress | |
1385 | because there is a version of the SB Audigy 2 NX firmware lacking | |
1386 | the audio fields in the endpoint descriptors */ | |
1387 | if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 || | |
1388 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
1389 | get_endpoint(alts, 1)->bSynchAddress != 0)) { | |
1390 | snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n", | |
1391 | dev->devnum, fmt->iface, fmt->altsetting); | |
1392 | return -EINVAL; | |
1393 | } | |
1394 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
1395 | if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
1396 | (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || | |
1397 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { | |
1398 | snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n", | |
1399 | dev->devnum, fmt->iface, fmt->altsetting); | |
1400 | return -EINVAL; | |
1401 | } | |
1402 | ep &= USB_ENDPOINT_NUMBER_MASK; | |
1403 | if (is_playback) | |
1404 | subs->syncpipe = usb_rcvisocpipe(dev, ep); | |
1405 | else | |
1406 | subs->syncpipe = usb_sndisocpipe(dev, ep); | |
1149a64f CL |
1407 | if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
1408 | get_endpoint(alts, 1)->bRefresh >= 1 && | |
1409 | get_endpoint(alts, 1)->bRefresh <= 9) | |
1410 | subs->syncinterval = get_endpoint(alts, 1)->bRefresh; | |
604cf499 | 1411 | else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) |
1149a64f | 1412 | subs->syncinterval = 1; |
604cf499 CL |
1413 | else if (get_endpoint(alts, 1)->bInterval >= 1 && |
1414 | get_endpoint(alts, 1)->bInterval <= 16) | |
1415 | subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1; | |
1416 | else | |
1417 | subs->syncinterval = 3; | |
1da177e4 LT |
1418 | } |
1419 | ||
1420 | /* always fill max packet size */ | |
1421 | if (fmt->attributes & EP_CS_ATTR_FILL_MAX) | |
1422 | subs->fill_max = 1; | |
1423 | ||
1424 | if ((err = init_usb_pitch(dev, subs->interface, alts, fmt)) < 0) | |
1425 | return err; | |
1426 | ||
1427 | subs->cur_audiofmt = fmt; | |
1428 | ||
1429 | #if 0 | |
2a56f51b PM |
1430 | printk("setting done: format = %d, rate = %d..%d, channels = %d\n", |
1431 | fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels); | |
1da177e4 LT |
1432 | printk(" datapipe = 0x%0x, syncpipe = 0x%0x\n", |
1433 | subs->datapipe, subs->syncpipe); | |
1434 | #endif | |
1435 | ||
1436 | return 0; | |
1437 | } | |
1438 | ||
1439 | /* | |
1440 | * hw_params callback | |
1441 | * | |
1442 | * allocate a buffer and set the given audio format. | |
1443 | * | |
1444 | * so far we use a physically linear buffer although packetize transfer | |
1445 | * doesn't need a continuous area. | |
1446 | * if sg buffer is supported on the later version of alsa, we'll follow | |
1447 | * that. | |
1448 | */ | |
86e07d34 TI |
1449 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, |
1450 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 1451 | { |
88518275 | 1452 | struct snd_usb_substream *subs = substream->runtime->private_data; |
1da177e4 LT |
1453 | struct audioformat *fmt; |
1454 | unsigned int channels, rate, format; | |
1455 | int ret, changed; | |
1456 | ||
6207e51b CL |
1457 | ret = snd_pcm_alloc_vmalloc_buffer(substream, |
1458 | params_buffer_bytes(hw_params)); | |
1da177e4 LT |
1459 | if (ret < 0) |
1460 | return ret; | |
1461 | ||
1462 | format = params_format(hw_params); | |
1463 | rate = params_rate(hw_params); | |
1464 | channels = params_channels(hw_params); | |
1465 | fmt = find_format(subs, format, rate, channels); | |
1466 | if (! fmt) { | |
21a3479a JK |
1467 | snd_printd(KERN_DEBUG "cannot set format: format = 0x%x, rate = %d, channels = %d\n", |
1468 | format, rate, channels); | |
1da177e4 LT |
1469 | return -EINVAL; |
1470 | } | |
1471 | ||
1472 | changed = subs->cur_audiofmt != fmt || | |
1473 | subs->period_bytes != params_period_bytes(hw_params) || | |
1474 | subs->cur_rate != rate; | |
1475 | if ((ret = set_format(subs, fmt)) < 0) | |
1476 | return ret; | |
1477 | ||
1478 | if (subs->cur_rate != rate) { | |
1479 | struct usb_host_interface *alts; | |
1480 | struct usb_interface *iface; | |
1481 | iface = usb_ifnum_to_if(subs->dev, fmt->iface); | |
1482 | alts = &iface->altsetting[fmt->altset_idx]; | |
1483 | ret = init_usb_sample_rate(subs->dev, subs->interface, alts, fmt, rate); | |
1484 | if (ret < 0) | |
1485 | return ret; | |
1486 | subs->cur_rate = rate; | |
1487 | } | |
1488 | ||
1489 | if (changed) { | |
1490 | /* format changed */ | |
1491 | release_substream_urbs(subs, 0); | |
1492 | /* influenced: period_bytes, channels, rate, format, */ | |
1493 | ret = init_substream_urbs(subs, params_period_bytes(hw_params), | |
1494 | params_rate(hw_params), | |
1495 | snd_pcm_format_physical_width(params_format(hw_params)) * params_channels(hw_params)); | |
1496 | } | |
1497 | ||
1498 | return ret; | |
1499 | } | |
1500 | ||
1501 | /* | |
1502 | * hw_free callback | |
1503 | * | |
1504 | * reset the audio format and release the buffer | |
1505 | */ | |
86e07d34 | 1506 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 1507 | { |
88518275 | 1508 | struct snd_usb_substream *subs = substream->runtime->private_data; |
1da177e4 LT |
1509 | |
1510 | subs->cur_audiofmt = NULL; | |
1511 | subs->cur_rate = 0; | |
1512 | subs->period_bytes = 0; | |
de1b8b93 TI |
1513 | if (!subs->stream->chip->shutdown) |
1514 | release_substream_urbs(subs, 0); | |
6207e51b | 1515 | return snd_pcm_free_vmalloc_buffer(substream); |
1da177e4 LT |
1516 | } |
1517 | ||
1518 | /* | |
1519 | * prepare callback | |
1520 | * | |
1521 | * only a few subtle things... | |
1522 | */ | |
86e07d34 | 1523 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 1524 | { |
86e07d34 TI |
1525 | struct snd_pcm_runtime *runtime = substream->runtime; |
1526 | struct snd_usb_substream *subs = runtime->private_data; | |
1da177e4 LT |
1527 | |
1528 | if (! subs->cur_audiofmt) { | |
1529 | snd_printk(KERN_ERR "usbaudio: no format is specified!\n"); | |
1530 | return -ENXIO; | |
1531 | } | |
1532 | ||
1533 | /* some unit conversions in runtime */ | |
1534 | subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize); | |
1535 | subs->curframesize = bytes_to_frames(runtime, subs->curpacksize); | |
1536 | ||
1537 | /* reset the pointer */ | |
1da177e4 | 1538 | subs->hwptr_done = 0; |
1da177e4 LT |
1539 | subs->transfer_done = 0; |
1540 | subs->phase = 0; | |
1541 | ||
1542 | /* clear urbs (to be sure) */ | |
1543 | deactivate_urbs(subs, 0, 1); | |
1544 | wait_clear_urbs(subs); | |
1545 | ||
b55bbf06 CL |
1546 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
1547 | * updates for all URBs would happen at the same time when starting */ | |
1548 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) { | |
e4f8e656 | 1549 | subs->ops.prepare = prepare_nodata_playback_urb; |
b55bbf06 CL |
1550 | return start_urbs(subs, runtime); |
1551 | } else | |
1552 | return 0; | |
1da177e4 LT |
1553 | } |
1554 | ||
1700f308 | 1555 | static struct snd_pcm_hardware snd_usb_hardware = |
1da177e4 | 1556 | { |
49045d3d CL |
1557 | .info = SNDRV_PCM_INFO_MMAP | |
1558 | SNDRV_PCM_INFO_MMAP_VALID | | |
1559 | SNDRV_PCM_INFO_BATCH | | |
1560 | SNDRV_PCM_INFO_INTERLEAVED | | |
e4f8e656 CL |
1561 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
1562 | SNDRV_PCM_INFO_PAUSE, | |
d31cbbfd | 1563 | .buffer_bytes_max = 1024 * 1024, |
1da177e4 | 1564 | .period_bytes_min = 64, |
d31cbbfd | 1565 | .period_bytes_max = 512 * 1024, |
1da177e4 LT |
1566 | .periods_min = 2, |
1567 | .periods_max = 1024, | |
1568 | }; | |
1569 | ||
1570 | /* | |
1571 | * h/w constraints | |
1572 | */ | |
1573 | ||
1574 | #ifdef HW_CONST_DEBUG | |
1575 | #define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args) | |
1576 | #else | |
1577 | #define hwc_debug(fmt, args...) /**/ | |
1578 | #endif | |
1579 | ||
86e07d34 | 1580 | static int hw_check_valid_format(struct snd_pcm_hw_params *params, struct audioformat *fp) |
1da177e4 | 1581 | { |
86e07d34 TI |
1582 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
1583 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
1584 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1585 | |
1586 | /* check the format */ | |
1587 | if (! snd_mask_test(fmts, fp->format)) { | |
1588 | hwc_debug(" > check: no supported format %d\n", fp->format); | |
1589 | return 0; | |
1590 | } | |
1591 | /* check the channels */ | |
1592 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
1593 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
1594 | return 0; | |
1595 | } | |
1596 | /* check the rate is within the range */ | |
1597 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
1598 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
1599 | return 0; | |
1600 | } | |
1601 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
1602 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
1603 | return 0; | |
1604 | } | |
1605 | return 1; | |
1606 | } | |
1607 | ||
86e07d34 TI |
1608 | static int hw_rule_rate(struct snd_pcm_hw_params *params, |
1609 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1610 | { |
86e07d34 | 1611 | struct snd_usb_substream *subs = rule->private; |
1da177e4 | 1612 | struct list_head *p; |
86e07d34 | 1613 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
1da177e4 LT |
1614 | unsigned int rmin, rmax; |
1615 | int changed; | |
1616 | ||
1617 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
1618 | changed = 0; | |
1619 | rmin = rmax = 0; | |
1620 | list_for_each(p, &subs->fmt_list) { | |
1621 | struct audioformat *fp; | |
1622 | fp = list_entry(p, struct audioformat, list); | |
1623 | if (! hw_check_valid_format(params, fp)) | |
1624 | continue; | |
1625 | if (changed++) { | |
1626 | if (rmin > fp->rate_min) | |
1627 | rmin = fp->rate_min; | |
1628 | if (rmax < fp->rate_max) | |
1629 | rmax = fp->rate_max; | |
1630 | } else { | |
1631 | rmin = fp->rate_min; | |
1632 | rmax = fp->rate_max; | |
1633 | } | |
1634 | } | |
1635 | ||
1636 | if (! changed) { | |
1637 | hwc_debug(" --> get empty\n"); | |
1638 | it->empty = 1; | |
1639 | return -EINVAL; | |
1640 | } | |
1641 | ||
1642 | changed = 0; | |
1643 | if (it->min < rmin) { | |
1644 | it->min = rmin; | |
1645 | it->openmin = 0; | |
1646 | changed = 1; | |
1647 | } | |
1648 | if (it->max > rmax) { | |
1649 | it->max = rmax; | |
1650 | it->openmax = 0; | |
1651 | changed = 1; | |
1652 | } | |
1653 | if (snd_interval_checkempty(it)) { | |
1654 | it->empty = 1; | |
1655 | return -EINVAL; | |
1656 | } | |
1657 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1658 | return changed; | |
1659 | } | |
1660 | ||
1661 | ||
86e07d34 TI |
1662 | static int hw_rule_channels(struct snd_pcm_hw_params *params, |
1663 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1664 | { |
86e07d34 | 1665 | struct snd_usb_substream *subs = rule->private; |
1da177e4 | 1666 | struct list_head *p; |
86e07d34 | 1667 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
1da177e4 LT |
1668 | unsigned int rmin, rmax; |
1669 | int changed; | |
1670 | ||
1671 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
1672 | changed = 0; | |
1673 | rmin = rmax = 0; | |
1674 | list_for_each(p, &subs->fmt_list) { | |
1675 | struct audioformat *fp; | |
1676 | fp = list_entry(p, struct audioformat, list); | |
1677 | if (! hw_check_valid_format(params, fp)) | |
1678 | continue; | |
1679 | if (changed++) { | |
1680 | if (rmin > fp->channels) | |
1681 | rmin = fp->channels; | |
1682 | if (rmax < fp->channels) | |
1683 | rmax = fp->channels; | |
1684 | } else { | |
1685 | rmin = fp->channels; | |
1686 | rmax = fp->channels; | |
1687 | } | |
1688 | } | |
1689 | ||
1690 | if (! changed) { | |
1691 | hwc_debug(" --> get empty\n"); | |
1692 | it->empty = 1; | |
1693 | return -EINVAL; | |
1694 | } | |
1695 | ||
1696 | changed = 0; | |
1697 | if (it->min < rmin) { | |
1698 | it->min = rmin; | |
1699 | it->openmin = 0; | |
1700 | changed = 1; | |
1701 | } | |
1702 | if (it->max > rmax) { | |
1703 | it->max = rmax; | |
1704 | it->openmax = 0; | |
1705 | changed = 1; | |
1706 | } | |
1707 | if (snd_interval_checkempty(it)) { | |
1708 | it->empty = 1; | |
1709 | return -EINVAL; | |
1710 | } | |
1711 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1712 | return changed; | |
1713 | } | |
1714 | ||
86e07d34 TI |
1715 | static int hw_rule_format(struct snd_pcm_hw_params *params, |
1716 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1717 | { |
86e07d34 | 1718 | struct snd_usb_substream *subs = rule->private; |
1da177e4 | 1719 | struct list_head *p; |
86e07d34 | 1720 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
1da177e4 LT |
1721 | u64 fbits; |
1722 | u32 oldbits[2]; | |
1723 | int changed; | |
1724 | ||
1725 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
1726 | fbits = 0; | |
1727 | list_for_each(p, &subs->fmt_list) { | |
1728 | struct audioformat *fp; | |
1729 | fp = list_entry(p, struct audioformat, list); | |
1730 | if (! hw_check_valid_format(params, fp)) | |
1731 | continue; | |
1732 | fbits |= (1ULL << fp->format); | |
1733 | } | |
1734 | ||
1735 | oldbits[0] = fmt->bits[0]; | |
1736 | oldbits[1] = fmt->bits[1]; | |
1737 | fmt->bits[0] &= (u32)fbits; | |
1738 | fmt->bits[1] &= (u32)(fbits >> 32); | |
1739 | if (! fmt->bits[0] && ! fmt->bits[1]) { | |
1740 | hwc_debug(" --> get empty\n"); | |
1741 | return -EINVAL; | |
1742 | } | |
1743 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
1744 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
1745 | return changed; | |
1746 | } | |
1747 | ||
1748 | #define MAX_MASK 64 | |
1749 | ||
1750 | /* | |
1751 | * check whether the registered audio formats need special hw-constraints | |
1752 | */ | |
86e07d34 | 1753 | static int check_hw_params_convention(struct snd_usb_substream *subs) |
1da177e4 LT |
1754 | { |
1755 | int i; | |
1756 | u32 *channels; | |
1757 | u32 *rates; | |
1758 | u32 cmaster, rmaster; | |
1759 | u32 rate_min = 0, rate_max = 0; | |
1760 | struct list_head *p; | |
1761 | int err = 1; | |
1762 | ||
1763 | channels = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL); | |
1764 | rates = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL); | |
5a220c86 TI |
1765 | if (!channels || !rates) { |
1766 | err = -ENOMEM; | |
ff17e953 | 1767 | goto __out; |
5a220c86 | 1768 | } |
1da177e4 LT |
1769 | |
1770 | list_for_each(p, &subs->fmt_list) { | |
1771 | struct audioformat *f; | |
1772 | f = list_entry(p, struct audioformat, list); | |
1773 | /* unconventional channels? */ | |
1774 | if (f->channels > 32) | |
1775 | goto __out; | |
1776 | /* continuous rate min/max matches? */ | |
1777 | if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) { | |
1778 | if (rate_min && f->rate_min != rate_min) | |
1779 | goto __out; | |
1780 | if (rate_max && f->rate_max != rate_max) | |
1781 | goto __out; | |
1782 | rate_min = f->rate_min; | |
1783 | rate_max = f->rate_max; | |
1784 | } | |
1785 | /* combination of continuous rates and fixed rates? */ | |
1786 | if (rates[f->format] & SNDRV_PCM_RATE_CONTINUOUS) { | |
1787 | if (f->rates != rates[f->format]) | |
1788 | goto __out; | |
1789 | } | |
1790 | if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) { | |
1791 | if (rates[f->format] && rates[f->format] != f->rates) | |
1792 | goto __out; | |
1793 | } | |
1794 | channels[f->format] |= (1 << f->channels); | |
1795 | rates[f->format] |= f->rates; | |
a79eee8d | 1796 | /* needs knot? */ |
918f3a0e | 1797 | if (f->rates & SNDRV_PCM_RATE_KNOT) |
a79eee8d | 1798 | goto __out; |
1da177e4 LT |
1799 | } |
1800 | /* check whether channels and rates match for all formats */ | |
1801 | cmaster = rmaster = 0; | |
1802 | for (i = 0; i < MAX_MASK; i++) { | |
1803 | if (cmaster != channels[i] && cmaster && channels[i]) | |
1804 | goto __out; | |
1805 | if (rmaster != rates[i] && rmaster && rates[i]) | |
1806 | goto __out; | |
1807 | if (channels[i]) | |
1808 | cmaster = channels[i]; | |
1809 | if (rates[i]) | |
1810 | rmaster = rates[i]; | |
1811 | } | |
1812 | /* check whether channels match for all distinct rates */ | |
1813 | memset(channels, 0, MAX_MASK * sizeof(u32)); | |
1814 | list_for_each(p, &subs->fmt_list) { | |
1815 | struct audioformat *f; | |
1816 | f = list_entry(p, struct audioformat, list); | |
1817 | if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
1818 | continue; | |
1819 | for (i = 0; i < 32; i++) { | |
1820 | if (f->rates & (1 << i)) | |
1821 | channels[i] |= (1 << f->channels); | |
1822 | } | |
1823 | } | |
1824 | cmaster = 0; | |
1825 | for (i = 0; i < 32; i++) { | |
1826 | if (cmaster != channels[i] && cmaster && channels[i]) | |
1827 | goto __out; | |
1828 | if (channels[i]) | |
1829 | cmaster = channels[i]; | |
1830 | } | |
1831 | err = 0; | |
1832 | ||
1833 | __out: | |
1834 | kfree(channels); | |
1835 | kfree(rates); | |
1836 | return err; | |
1837 | } | |
1838 | ||
a79eee8d LR |
1839 | /* |
1840 | * If the device supports unusual bit rates, does the request meet these? | |
1841 | */ | |
1842 | static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, | |
1843 | struct snd_usb_substream *subs) | |
1844 | { | |
8fec560d TI |
1845 | struct audioformat *fp; |
1846 | int count = 0, needs_knot = 0; | |
a79eee8d LR |
1847 | int err; |
1848 | ||
8fec560d TI |
1849 | list_for_each_entry(fp, &subs->fmt_list, list) { |
1850 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
1851 | return 0; | |
1852 | count += fp->nr_rates; | |
918f3a0e | 1853 | if (fp->rates & SNDRV_PCM_RATE_KNOT) |
8fec560d | 1854 | needs_knot = 1; |
a79eee8d | 1855 | } |
8fec560d TI |
1856 | if (!needs_knot) |
1857 | return 0; | |
1858 | ||
1859 | subs->rate_list.count = count; | |
1860 | subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL); | |
1861 | subs->rate_list.mask = 0; | |
1862 | count = 0; | |
1863 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1864 | int i; | |
1865 | for (i = 0; i < fp->nr_rates; i++) | |
1866 | subs->rate_list.list[count++] = fp->rate_table[i]; | |
1867 | } | |
1868 | err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1869 | &subs->rate_list); | |
1870 | if (err < 0) | |
1871 | return err; | |
a79eee8d LR |
1872 | |
1873 | return 0; | |
1874 | } | |
1875 | ||
1da177e4 LT |
1876 | |
1877 | /* | |
1878 | * set up the runtime hardware information. | |
1879 | */ | |
1880 | ||
86e07d34 | 1881 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) |
1da177e4 LT |
1882 | { |
1883 | struct list_head *p; | |
1884 | int err; | |
1885 | ||
1886 | runtime->hw.formats = subs->formats; | |
1887 | ||
1888 | runtime->hw.rate_min = 0x7fffffff; | |
1889 | runtime->hw.rate_max = 0; | |
1890 | runtime->hw.channels_min = 256; | |
1891 | runtime->hw.channels_max = 0; | |
1892 | runtime->hw.rates = 0; | |
1893 | /* check min/max rates and channels */ | |
1894 | list_for_each(p, &subs->fmt_list) { | |
1895 | struct audioformat *fp; | |
1896 | fp = list_entry(p, struct audioformat, list); | |
1897 | runtime->hw.rates |= fp->rates; | |
1898 | if (runtime->hw.rate_min > fp->rate_min) | |
1899 | runtime->hw.rate_min = fp->rate_min; | |
1900 | if (runtime->hw.rate_max < fp->rate_max) | |
1901 | runtime->hw.rate_max = fp->rate_max; | |
1902 | if (runtime->hw.channels_min > fp->channels) | |
1903 | runtime->hw.channels_min = fp->channels; | |
1904 | if (runtime->hw.channels_max < fp->channels) | |
1905 | runtime->hw.channels_max = fp->channels; | |
1906 | if (fp->fmt_type == USB_FORMAT_TYPE_II && fp->frame_size > 0) { | |
1907 | /* FIXME: there might be more than one audio formats... */ | |
1908 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
1909 | fp->frame_size; | |
1910 | } | |
1911 | } | |
1912 | ||
1913 | /* set the period time minimum 1ms */ | |
81c4899f TI |
1914 | /* FIXME: high-speed mode allows 125us minimum period, but many parts |
1915 | * in the current code assume the 1ms period. | |
1916 | */ | |
1da177e4 | 1917 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, |
81c4899f | 1918 | 1000 * MIN_PACKS_URB, |
1da177e4 LT |
1919 | /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX); |
1920 | ||
5a220c86 TI |
1921 | err = check_hw_params_convention(subs); |
1922 | if (err < 0) | |
1923 | return err; | |
1924 | else if (err) { | |
1da177e4 LT |
1925 | hwc_debug("setting extra hw constraints...\n"); |
1926 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1927 | hw_rule_rate, subs, | |
1928 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1929 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1930 | -1)) < 0) | |
1931 | return err; | |
1932 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1933 | hw_rule_channels, subs, | |
1934 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1935 | SNDRV_PCM_HW_PARAM_RATE, | |
1936 | -1)) < 0) | |
1937 | return err; | |
1938 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1939 | hw_rule_format, subs, | |
1940 | SNDRV_PCM_HW_PARAM_RATE, | |
1941 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1942 | -1)) < 0) | |
1943 | return err; | |
a79eee8d LR |
1944 | if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0) |
1945 | return err; | |
1da177e4 LT |
1946 | } |
1947 | return 0; | |
1948 | } | |
1949 | ||
1700f308 | 1950 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction) |
1da177e4 | 1951 | { |
86e07d34 TI |
1952 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1953 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1954 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1da177e4 LT |
1955 | |
1956 | subs->interface = -1; | |
1957 | subs->format = 0; | |
1700f308 | 1958 | runtime->hw = snd_usb_hardware; |
1da177e4 LT |
1959 | runtime->private_data = subs; |
1960 | subs->pcm_substream = substream; | |
1961 | return setup_hw_info(runtime, subs); | |
1962 | } | |
1963 | ||
86e07d34 | 1964 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) |
1da177e4 | 1965 | { |
86e07d34 TI |
1966 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1967 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1da177e4 LT |
1968 | |
1969 | if (subs->interface >= 0) { | |
1970 | usb_set_interface(subs->dev, subs->interface, 0); | |
1971 | subs->interface = -1; | |
1972 | } | |
1973 | subs->pcm_substream = NULL; | |
1974 | return 0; | |
1975 | } | |
1976 | ||
86e07d34 | 1977 | static int snd_usb_playback_open(struct snd_pcm_substream *substream) |
1da177e4 | 1978 | { |
1700f308 | 1979 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK); |
1da177e4 LT |
1980 | } |
1981 | ||
86e07d34 | 1982 | static int snd_usb_playback_close(struct snd_pcm_substream *substream) |
1da177e4 LT |
1983 | { |
1984 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1985 | } | |
1986 | ||
86e07d34 | 1987 | static int snd_usb_capture_open(struct snd_pcm_substream *substream) |
1da177e4 | 1988 | { |
1700f308 | 1989 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE); |
1da177e4 LT |
1990 | } |
1991 | ||
86e07d34 | 1992 | static int snd_usb_capture_close(struct snd_pcm_substream *substream) |
1da177e4 LT |
1993 | { |
1994 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1995 | } | |
1996 | ||
86e07d34 | 1997 | static struct snd_pcm_ops snd_usb_playback_ops = { |
1da177e4 LT |
1998 | .open = snd_usb_playback_open, |
1999 | .close = snd_usb_playback_close, | |
2000 | .ioctl = snd_pcm_lib_ioctl, | |
2001 | .hw_params = snd_usb_hw_params, | |
2002 | .hw_free = snd_usb_hw_free, | |
2003 | .prepare = snd_usb_pcm_prepare, | |
b55bbf06 | 2004 | .trigger = snd_usb_pcm_playback_trigger, |
1da177e4 | 2005 | .pointer = snd_usb_pcm_pointer, |
6207e51b | 2006 | .page = snd_pcm_get_vmalloc_page, |
1da177e4 LT |
2007 | }; |
2008 | ||
86e07d34 | 2009 | static struct snd_pcm_ops snd_usb_capture_ops = { |
1da177e4 LT |
2010 | .open = snd_usb_capture_open, |
2011 | .close = snd_usb_capture_close, | |
2012 | .ioctl = snd_pcm_lib_ioctl, | |
2013 | .hw_params = snd_usb_hw_params, | |
2014 | .hw_free = snd_usb_hw_free, | |
2015 | .prepare = snd_usb_pcm_prepare, | |
b55bbf06 | 2016 | .trigger = snd_usb_pcm_capture_trigger, |
1da177e4 | 2017 | .pointer = snd_usb_pcm_pointer, |
6207e51b | 2018 | .page = snd_pcm_get_vmalloc_page, |
1da177e4 LT |
2019 | }; |
2020 | ||
2021 | ||
2022 | ||
2023 | /* | |
2024 | * helper functions | |
2025 | */ | |
2026 | ||
2027 | /* | |
2028 | * combine bytes and get an integer value | |
2029 | */ | |
2030 | unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size) | |
2031 | { | |
2032 | switch (size) { | |
2033 | case 1: return *bytes; | |
2034 | case 2: return combine_word(bytes); | |
2035 | case 3: return combine_triple(bytes); | |
2036 | case 4: return combine_quad(bytes); | |
2037 | default: return 0; | |
2038 | } | |
2039 | } | |
2040 | ||
2041 | /* | |
2042 | * parse descriptor buffer and return the pointer starting the given | |
2043 | * descriptor type. | |
2044 | */ | |
2045 | void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype) | |
2046 | { | |
2047 | u8 *p, *end, *next; | |
2048 | ||
2049 | p = descstart; | |
2050 | end = p + desclen; | |
2051 | for (; p < end;) { | |
2052 | if (p[0] < 2) | |
2053 | return NULL; | |
2054 | next = p + p[0]; | |
2055 | if (next > end) | |
2056 | return NULL; | |
2057 | if (p[1] == dtype && (!after || (void *)p > after)) { | |
2058 | return p; | |
2059 | } | |
2060 | p = next; | |
2061 | } | |
2062 | return NULL; | |
2063 | } | |
2064 | ||
2065 | /* | |
2066 | * find a class-specified interface descriptor with the given subtype. | |
2067 | */ | |
2068 | void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype) | |
2069 | { | |
2070 | unsigned char *p = after; | |
2071 | ||
2072 | while ((p = snd_usb_find_desc(buffer, buflen, p, | |
2073 | USB_DT_CS_INTERFACE)) != NULL) { | |
2074 | if (p[0] >= 3 && p[2] == dsubtype) | |
2075 | return p; | |
2076 | } | |
2077 | return NULL; | |
2078 | } | |
2079 | ||
2080 | /* | |
2081 | * Wrapper for usb_control_msg(). | |
2082 | * Allocates a temp buffer to prevent dmaing from/to the stack. | |
2083 | */ | |
2084 | int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, | |
2085 | __u8 requesttype, __u16 value, __u16 index, void *data, | |
2086 | __u16 size, int timeout) | |
2087 | { | |
2088 | int err; | |
2089 | void *buf = NULL; | |
2090 | ||
2091 | if (size > 0) { | |
52978be6 | 2092 | buf = kmemdup(data, size, GFP_KERNEL); |
1da177e4 LT |
2093 | if (!buf) |
2094 | return -ENOMEM; | |
1da177e4 LT |
2095 | } |
2096 | err = usb_control_msg(dev, pipe, request, requesttype, | |
2097 | value, index, buf, size, timeout); | |
2098 | if (size > 0) { | |
2099 | memcpy(data, buf, size); | |
2100 | kfree(buf); | |
2101 | } | |
2102 | return err; | |
2103 | } | |
2104 | ||
2105 | ||
2106 | /* | |
2107 | * entry point for linux usb interface | |
2108 | */ | |
2109 | ||
2110 | static int usb_audio_probe(struct usb_interface *intf, | |
2111 | const struct usb_device_id *id); | |
2112 | static void usb_audio_disconnect(struct usb_interface *intf); | |
93521d27 AM |
2113 | |
2114 | #ifdef CONFIG_PM | |
f85bf29c ON |
2115 | static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message); |
2116 | static int usb_audio_resume(struct usb_interface *intf); | |
93521d27 AM |
2117 | #else |
2118 | #define usb_audio_suspend NULL | |
2119 | #define usb_audio_resume NULL | |
2120 | #endif | |
1da177e4 LT |
2121 | |
2122 | static struct usb_device_id usb_audio_ids [] = { | |
2123 | #include "usbquirks.h" | |
2124 | { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS), | |
2125 | .bInterfaceClass = USB_CLASS_AUDIO, | |
2126 | .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL }, | |
2127 | { } /* Terminating entry */ | |
2128 | }; | |
2129 | ||
2130 | MODULE_DEVICE_TABLE (usb, usb_audio_ids); | |
2131 | ||
2132 | static struct usb_driver usb_audio_driver = { | |
1da177e4 LT |
2133 | .name = "snd-usb-audio", |
2134 | .probe = usb_audio_probe, | |
2135 | .disconnect = usb_audio_disconnect, | |
f85bf29c ON |
2136 | .suspend = usb_audio_suspend, |
2137 | .resume = usb_audio_resume, | |
1da177e4 LT |
2138 | .id_table = usb_audio_ids, |
2139 | }; | |
2140 | ||
2141 | ||
727f317a | 2142 | #if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS) |
21a3479a | 2143 | |
1da177e4 LT |
2144 | /* |
2145 | * proc interface for list the supported pcm formats | |
2146 | */ | |
86e07d34 | 2147 | static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) |
1da177e4 LT |
2148 | { |
2149 | struct list_head *p; | |
2150 | static char *sync_types[4] = { | |
2151 | "NONE", "ASYNC", "ADAPTIVE", "SYNC" | |
2152 | }; | |
2153 | ||
2154 | list_for_each(p, &subs->fmt_list) { | |
2155 | struct audioformat *fp; | |
2156 | fp = list_entry(p, struct audioformat, list); | |
2157 | snd_iprintf(buffer, " Interface %d\n", fp->iface); | |
2158 | snd_iprintf(buffer, " Altset %d\n", fp->altsetting); | |
3f72a30c | 2159 | snd_iprintf(buffer, " Format: 0x%x\n", fp->format); |
1da177e4 LT |
2160 | snd_iprintf(buffer, " Channels: %d\n", fp->channels); |
2161 | snd_iprintf(buffer, " Endpoint: %d %s (%s)\n", | |
2162 | fp->endpoint & USB_ENDPOINT_NUMBER_MASK, | |
2163 | fp->endpoint & USB_DIR_IN ? "IN" : "OUT", | |
2164 | sync_types[(fp->ep_attr & EP_ATTR_MASK) >> 2]); | |
2165 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) { | |
2166 | snd_iprintf(buffer, " Rates: %d - %d (continuous)\n", | |
2167 | fp->rate_min, fp->rate_max); | |
2168 | } else { | |
2169 | unsigned int i; | |
2170 | snd_iprintf(buffer, " Rates: "); | |
2171 | for (i = 0; i < fp->nr_rates; i++) { | |
2172 | if (i > 0) | |
2173 | snd_iprintf(buffer, ", "); | |
2174 | snd_iprintf(buffer, "%d", fp->rate_table[i]); | |
2175 | } | |
2176 | snd_iprintf(buffer, "\n"); | |
2177 | } | |
2178 | // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize); | |
2179 | // snd_iprintf(buffer, " EP Attribute = 0x%x\n", fp->attributes); | |
2180 | } | |
2181 | } | |
2182 | ||
86e07d34 | 2183 | static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) |
1da177e4 LT |
2184 | { |
2185 | if (subs->running) { | |
2186 | unsigned int i; | |
2187 | snd_iprintf(buffer, " Status: Running\n"); | |
2188 | snd_iprintf(buffer, " Interface = %d\n", subs->interface); | |
2189 | snd_iprintf(buffer, " Altset = %d\n", subs->format); | |
2190 | snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs); | |
2191 | for (i = 0; i < subs->nurbs; i++) | |
2192 | snd_iprintf(buffer, "%d ", subs->dataurb[i].packets); | |
2193 | snd_iprintf(buffer, "]\n"); | |
2194 | snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize); | |
08fe1589 | 2195 | snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n", |
1da177e4 LT |
2196 | snd_usb_get_speed(subs->dev) == USB_SPEED_FULL |
2197 | ? get_full_speed_hz(subs->freqm) | |
08fe1589 CL |
2198 | : get_high_speed_hz(subs->freqm), |
2199 | subs->freqm >> 16, subs->freqm & 0xffff); | |
1da177e4 LT |
2200 | } else { |
2201 | snd_iprintf(buffer, " Status: Stop\n"); | |
2202 | } | |
2203 | } | |
2204 | ||
86e07d34 | 2205 | static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
1da177e4 | 2206 | { |
86e07d34 | 2207 | struct snd_usb_stream *stream = entry->private_data; |
1da177e4 LT |
2208 | |
2209 | snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name); | |
2210 | ||
2211 | if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) { | |
2212 | snd_iprintf(buffer, "\nPlayback:\n"); | |
2213 | proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); | |
2214 | proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); | |
2215 | } | |
2216 | if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) { | |
2217 | snd_iprintf(buffer, "\nCapture:\n"); | |
2218 | proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); | |
2219 | proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); | |
2220 | } | |
2221 | } | |
2222 | ||
86e07d34 | 2223 | static void proc_pcm_format_add(struct snd_usb_stream *stream) |
1da177e4 | 2224 | { |
86e07d34 | 2225 | struct snd_info_entry *entry; |
1da177e4 | 2226 | char name[32]; |
86e07d34 | 2227 | struct snd_card *card = stream->chip->card; |
1da177e4 LT |
2228 | |
2229 | sprintf(name, "stream%d", stream->pcm_index); | |
2230 | if (! snd_card_proc_new(card, name, &entry)) | |
bf850204 | 2231 | snd_info_set_text_ops(entry, stream, proc_pcm_format_read); |
1da177e4 LT |
2232 | } |
2233 | ||
21a3479a JK |
2234 | #else |
2235 | ||
2236 | static inline void proc_pcm_format_add(struct snd_usb_stream *stream) | |
2237 | { | |
2238 | } | |
2239 | ||
2240 | #endif | |
1da177e4 LT |
2241 | |
2242 | /* | |
2243 | * initialize the substream instance. | |
2244 | */ | |
2245 | ||
86e07d34 | 2246 | static void init_substream(struct snd_usb_stream *as, int stream, struct audioformat *fp) |
1da177e4 | 2247 | { |
86e07d34 | 2248 | struct snd_usb_substream *subs = &as->substream[stream]; |
1da177e4 LT |
2249 | |
2250 | INIT_LIST_HEAD(&subs->fmt_list); | |
2251 | spin_lock_init(&subs->lock); | |
2252 | ||
2253 | subs->stream = as; | |
2254 | subs->direction = stream; | |
2255 | subs->dev = as->chip->dev; | |
d513202e | 2256 | if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) { |
1da177e4 | 2257 | subs->ops = audio_urb_ops[stream]; |
d513202e | 2258 | } else { |
1da177e4 | 2259 | subs->ops = audio_urb_ops_high_speed[stream]; |
d513202e CL |
2260 | switch (as->chip->usb_id) { |
2261 | case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */ | |
2262 | case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */ | |
2263 | subs->ops.retire_sync = retire_playback_sync_urb_hs_emu; | |
2264 | break; | |
2265 | } | |
2266 | } | |
1da177e4 LT |
2267 | snd_pcm_set_ops(as->pcm, stream, |
2268 | stream == SNDRV_PCM_STREAM_PLAYBACK ? | |
2269 | &snd_usb_playback_ops : &snd_usb_capture_ops); | |
2270 | ||
2271 | list_add_tail(&fp->list, &subs->fmt_list); | |
2272 | subs->formats |= 1ULL << fp->format; | |
2273 | subs->endpoint = fp->endpoint; | |
2274 | subs->num_formats++; | |
2275 | subs->fmt_type = fp->fmt_type; | |
2276 | } | |
2277 | ||
2278 | ||
2279 | /* | |
2280 | * free a substream | |
2281 | */ | |
86e07d34 | 2282 | static void free_substream(struct snd_usb_substream *subs) |
1da177e4 LT |
2283 | { |
2284 | struct list_head *p, *n; | |
2285 | ||
2286 | if (! subs->num_formats) | |
2287 | return; /* not initialized */ | |
2288 | list_for_each_safe(p, n, &subs->fmt_list) { | |
2289 | struct audioformat *fp = list_entry(p, struct audioformat, list); | |
2290 | kfree(fp->rate_table); | |
2291 | kfree(fp); | |
2292 | } | |
8fec560d | 2293 | kfree(subs->rate_list.list); |
1da177e4 LT |
2294 | } |
2295 | ||
2296 | ||
2297 | /* | |
2298 | * free a usb stream instance | |
2299 | */ | |
86e07d34 | 2300 | static void snd_usb_audio_stream_free(struct snd_usb_stream *stream) |
1da177e4 LT |
2301 | { |
2302 | free_substream(&stream->substream[0]); | |
2303 | free_substream(&stream->substream[1]); | |
2304 | list_del(&stream->list); | |
2305 | kfree(stream); | |
2306 | } | |
2307 | ||
86e07d34 | 2308 | static void snd_usb_audio_pcm_free(struct snd_pcm *pcm) |
1da177e4 | 2309 | { |
86e07d34 | 2310 | struct snd_usb_stream *stream = pcm->private_data; |
1da177e4 LT |
2311 | if (stream) { |
2312 | stream->pcm = NULL; | |
1da177e4 LT |
2313 | snd_usb_audio_stream_free(stream); |
2314 | } | |
2315 | } | |
2316 | ||
2317 | ||
2318 | /* | |
2319 | * add this endpoint to the chip instance. | |
2320 | * if a stream with the same endpoint already exists, append to it. | |
2321 | * if not, create a new pcm stream. | |
2322 | */ | |
86e07d34 | 2323 | static int add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp) |
1da177e4 LT |
2324 | { |
2325 | struct list_head *p; | |
86e07d34 TI |
2326 | struct snd_usb_stream *as; |
2327 | struct snd_usb_substream *subs; | |
2328 | struct snd_pcm *pcm; | |
1da177e4 LT |
2329 | int err; |
2330 | ||
2331 | list_for_each(p, &chip->pcm_list) { | |
86e07d34 | 2332 | as = list_entry(p, struct snd_usb_stream, list); |
1da177e4 LT |
2333 | if (as->fmt_type != fp->fmt_type) |
2334 | continue; | |
2335 | subs = &as->substream[stream]; | |
2336 | if (! subs->endpoint) | |
2337 | continue; | |
2338 | if (subs->endpoint == fp->endpoint) { | |
2339 | list_add_tail(&fp->list, &subs->fmt_list); | |
2340 | subs->num_formats++; | |
2341 | subs->formats |= 1ULL << fp->format; | |
2342 | return 0; | |
2343 | } | |
2344 | } | |
2345 | /* look for an empty stream */ | |
2346 | list_for_each(p, &chip->pcm_list) { | |
86e07d34 | 2347 | as = list_entry(p, struct snd_usb_stream, list); |
1da177e4 LT |
2348 | if (as->fmt_type != fp->fmt_type) |
2349 | continue; | |
2350 | subs = &as->substream[stream]; | |
2351 | if (subs->endpoint) | |
2352 | continue; | |
2353 | err = snd_pcm_new_stream(as->pcm, stream, 1); | |
2354 | if (err < 0) | |
2355 | return err; | |
2356 | init_substream(as, stream, fp); | |
2357 | return 0; | |
2358 | } | |
2359 | ||
2360 | /* create a new pcm */ | |
59feddb2 | 2361 | as = kzalloc(sizeof(*as), GFP_KERNEL); |
1da177e4 LT |
2362 | if (! as) |
2363 | return -ENOMEM; | |
1da177e4 LT |
2364 | as->pcm_index = chip->pcm_devs; |
2365 | as->chip = chip; | |
2366 | as->fmt_type = fp->fmt_type; | |
2367 | err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs, | |
2368 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0, | |
2369 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1, | |
2370 | &pcm); | |
2371 | if (err < 0) { | |
2372 | kfree(as); | |
2373 | return err; | |
2374 | } | |
2375 | as->pcm = pcm; | |
2376 | pcm->private_data = as; | |
2377 | pcm->private_free = snd_usb_audio_pcm_free; | |
2378 | pcm->info_flags = 0; | |
2379 | if (chip->pcm_devs > 0) | |
2380 | sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs); | |
2381 | else | |
2382 | strcpy(pcm->name, "USB Audio"); | |
2383 | ||
2384 | init_substream(as, stream, fp); | |
2385 | ||
2386 | list_add(&as->list, &chip->pcm_list); | |
2387 | chip->pcm_devs++; | |
2388 | ||
2389 | proc_pcm_format_add(as); | |
2390 | ||
2391 | return 0; | |
2392 | } | |
2393 | ||
2394 | ||
2395 | /* | |
2396 | * check if the device uses big-endian samples | |
2397 | */ | |
86e07d34 | 2398 | static int is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp) |
1da177e4 | 2399 | { |
27d10f56 CL |
2400 | switch (chip->usb_id) { |
2401 | case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */ | |
2402 | if (fp->endpoint & USB_DIR_IN) | |
1da177e4 | 2403 | return 1; |
27d10f56 CL |
2404 | break; |
2405 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
f8c78b82 TLM |
2406 | if (device_setup[chip->index] == 0x00 || |
2407 | fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3) | |
2408 | return 1; | |
1da177e4 LT |
2409 | } |
2410 | return 0; | |
2411 | } | |
2412 | ||
2413 | /* | |
2414 | * parse the audio format type I descriptor | |
2415 | * and returns the corresponding pcm format | |
2416 | * | |
2417 | * @dev: usb device | |
2418 | * @fp: audioformat record | |
2419 | * @format: the format tag (wFormatTag) | |
2420 | * @fmt: the format type descriptor | |
2421 | */ | |
86e07d34 | 2422 | static int parse_audio_format_i_type(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2423 | int format, unsigned char *fmt) |
2424 | { | |
2425 | int pcm_format; | |
2426 | int sample_width, sample_bytes; | |
2427 | ||
2428 | /* FIXME: correct endianess and sign? */ | |
2429 | pcm_format = -1; | |
2430 | sample_width = fmt[6]; | |
2431 | sample_bytes = fmt[5]; | |
2432 | switch (format) { | |
2433 | case 0: /* some devices don't define this correctly... */ | |
2434 | snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n", | |
27d10f56 | 2435 | chip->dev->devnum, fp->iface, fp->altsetting); |
1da177e4 LT |
2436 | /* fall-through */ |
2437 | case USB_AUDIO_FORMAT_PCM: | |
2438 | if (sample_width > sample_bytes * 8) { | |
2439 | snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n", | |
27d10f56 | 2440 | chip->dev->devnum, fp->iface, fp->altsetting, |
1da177e4 LT |
2441 | sample_width, sample_bytes); |
2442 | } | |
2443 | /* check the format byte size */ | |
2444 | switch (fmt[5]) { | |
2445 | case 1: | |
2446 | pcm_format = SNDRV_PCM_FORMAT_S8; | |
2447 | break; | |
2448 | case 2: | |
27d10f56 | 2449 | if (is_big_endian_format(chip, fp)) |
1da177e4 LT |
2450 | pcm_format = SNDRV_PCM_FORMAT_S16_BE; /* grrr, big endian!! */ |
2451 | else | |
2452 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
2453 | break; | |
2454 | case 3: | |
27d10f56 | 2455 | if (is_big_endian_format(chip, fp)) |
1da177e4 LT |
2456 | pcm_format = SNDRV_PCM_FORMAT_S24_3BE; /* grrr, big endian!! */ |
2457 | else | |
2458 | pcm_format = SNDRV_PCM_FORMAT_S24_3LE; | |
2459 | break; | |
2460 | case 4: | |
2461 | pcm_format = SNDRV_PCM_FORMAT_S32_LE; | |
2462 | break; | |
2463 | default: | |
2464 | snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n", | |
27d10f56 CL |
2465 | chip->dev->devnum, fp->iface, |
2466 | fp->altsetting, sample_width, sample_bytes); | |
1da177e4 LT |
2467 | break; |
2468 | } | |
2469 | break; | |
2470 | case USB_AUDIO_FORMAT_PCM8: | |
2a56f51b PM |
2471 | pcm_format = SNDRV_PCM_FORMAT_U8; |
2472 | ||
2473 | /* Dallas DS4201 workaround: it advertises U8 format, but really | |
2474 | supports S8. */ | |
27d10f56 | 2475 | if (chip->usb_id == USB_ID(0x04fa, 0x4201)) |
1da177e4 | 2476 | pcm_format = SNDRV_PCM_FORMAT_S8; |
1da177e4 LT |
2477 | break; |
2478 | case USB_AUDIO_FORMAT_IEEE_FLOAT: | |
2479 | pcm_format = SNDRV_PCM_FORMAT_FLOAT_LE; | |
2480 | break; | |
2481 | case USB_AUDIO_FORMAT_ALAW: | |
2482 | pcm_format = SNDRV_PCM_FORMAT_A_LAW; | |
2483 | break; | |
2484 | case USB_AUDIO_FORMAT_MU_LAW: | |
2485 | pcm_format = SNDRV_PCM_FORMAT_MU_LAW; | |
2486 | break; | |
2487 | default: | |
2488 | snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n", | |
27d10f56 | 2489 | chip->dev->devnum, fp->iface, fp->altsetting, format); |
1da177e4 LT |
2490 | break; |
2491 | } | |
2492 | return pcm_format; | |
2493 | } | |
2494 | ||
2495 | ||
2496 | /* | |
2497 | * parse the format descriptor and stores the possible sample rates | |
2498 | * on the audioformat table. | |
2499 | * | |
2500 | * @dev: usb device | |
2501 | * @fp: audioformat record | |
2502 | * @fmt: the format descriptor | |
2503 | * @offset: the start offset of descriptor pointing the rate type | |
2504 | * (7 for type I and II, 8 for type II) | |
2505 | */ | |
86e07d34 | 2506 | static int parse_audio_format_rates(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2507 | unsigned char *fmt, int offset) |
2508 | { | |
2509 | int nr_rates = fmt[offset]; | |
918f3a0e | 2510 | |
1da177e4 LT |
2511 | if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) { |
2512 | snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n", | |
27d10f56 | 2513 | chip->dev->devnum, fp->iface, fp->altsetting); |
1da177e4 LT |
2514 | return -1; |
2515 | } | |
2516 | ||
2517 | if (nr_rates) { | |
2518 | /* | |
2519 | * build the rate table and bitmap flags | |
2520 | */ | |
918f3a0e | 2521 | int r, idx; |
beb60119 | 2522 | unsigned int nonzero_rates = 0; |
918f3a0e | 2523 | |
1da177e4 LT |
2524 | fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); |
2525 | if (fp->rate_table == NULL) { | |
2526 | snd_printk(KERN_ERR "cannot malloc\n"); | |
2527 | return -1; | |
2528 | } | |
2529 | ||
2530 | fp->nr_rates = nr_rates; | |
2531 | fp->rate_min = fp->rate_max = combine_triple(&fmt[8]); | |
2532 | for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { | |
987411b7 CL |
2533 | unsigned int rate = combine_triple(&fmt[idx]); |
2534 | /* C-Media CM6501 mislabels its 96 kHz altsetting */ | |
2535 | if (rate == 48000 && nr_rates == 1 && | |
2536 | chip->usb_id == USB_ID(0x0d8c, 0x0201) && | |
2537 | fp->altsetting == 5 && fp->maxpacksize == 392) | |
2538 | rate = 96000; | |
2539 | fp->rate_table[r] = rate; | |
beb60119 | 2540 | nonzero_rates |= rate; |
1da177e4 LT |
2541 | if (rate < fp->rate_min) |
2542 | fp->rate_min = rate; | |
2543 | else if (rate > fp->rate_max) | |
2544 | fp->rate_max = rate; | |
918f3a0e | 2545 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); |
1da177e4 | 2546 | } |
beb60119 GJ |
2547 | if (!nonzero_rates) { |
2548 | hwc_debug("All rates were zero. Skipping format!\n"); | |
2549 | return -1; | |
2550 | } | |
1da177e4 LT |
2551 | } else { |
2552 | /* continuous rates */ | |
2553 | fp->rates = SNDRV_PCM_RATE_CONTINUOUS; | |
2554 | fp->rate_min = combine_triple(&fmt[offset + 1]); | |
2555 | fp->rate_max = combine_triple(&fmt[offset + 4]); | |
2556 | } | |
2557 | return 0; | |
2558 | } | |
2559 | ||
2560 | /* | |
2561 | * parse the format type I and III descriptors | |
2562 | */ | |
86e07d34 | 2563 | static int parse_audio_format_i(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2564 | int format, unsigned char *fmt) |
2565 | { | |
2566 | int pcm_format; | |
2567 | ||
2568 | if (fmt[3] == USB_FORMAT_TYPE_III) { | |
2569 | /* FIXME: the format type is really IECxxx | |
2570 | * but we give normal PCM format to get the existing | |
2571 | * apps working... | |
2572 | */ | |
cac19c3b TLM |
2573 | switch (chip->usb_id) { |
2574 | ||
2575 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
2576 | if (device_setup[chip->index] == 0x00 && | |
2577 | fp->altsetting == 6) | |
2578 | pcm_format = SNDRV_PCM_FORMAT_S16_BE; | |
2579 | else | |
2580 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
2581 | break; | |
2582 | default: | |
2583 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
2584 | } | |
1da177e4 | 2585 | } else { |
27d10f56 | 2586 | pcm_format = parse_audio_format_i_type(chip, fp, format, fmt); |
1da177e4 LT |
2587 | if (pcm_format < 0) |
2588 | return -1; | |
2589 | } | |
2590 | fp->format = pcm_format; | |
2591 | fp->channels = fmt[4]; | |
2592 | if (fp->channels < 1) { | |
2593 | snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n", | |
27d10f56 | 2594 | chip->dev->devnum, fp->iface, fp->altsetting, fp->channels); |
1da177e4 LT |
2595 | return -1; |
2596 | } | |
27d10f56 | 2597 | return parse_audio_format_rates(chip, fp, fmt, 7); |
1da177e4 LT |
2598 | } |
2599 | ||
2600 | /* | |
2601 | * prase the format type II descriptor | |
2602 | */ | |
86e07d34 | 2603 | static int parse_audio_format_ii(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2604 | int format, unsigned char *fmt) |
2605 | { | |
2606 | int brate, framesize; | |
2607 | switch (format) { | |
2608 | case USB_AUDIO_FORMAT_AC3: | |
2609 | /* FIXME: there is no AC3 format defined yet */ | |
2610 | // fp->format = SNDRV_PCM_FORMAT_AC3; | |
2611 | fp->format = SNDRV_PCM_FORMAT_U8; /* temporarily hack to receive byte streams */ | |
2612 | break; | |
2613 | case USB_AUDIO_FORMAT_MPEG: | |
2614 | fp->format = SNDRV_PCM_FORMAT_MPEG; | |
2615 | break; | |
2616 | default: | |
2617 | snd_printd(KERN_INFO "%d:%u:%d : unknown format tag 0x%x is detected. processed as MPEG.\n", | |
27d10f56 | 2618 | chip->dev->devnum, fp->iface, fp->altsetting, format); |
1da177e4 LT |
2619 | fp->format = SNDRV_PCM_FORMAT_MPEG; |
2620 | break; | |
2621 | } | |
2622 | fp->channels = 1; | |
2623 | brate = combine_word(&fmt[4]); /* fmt[4,5] : wMaxBitRate (in kbps) */ | |
2624 | framesize = combine_word(&fmt[6]); /* fmt[6,7]: wSamplesPerFrame */ | |
2625 | snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); | |
2626 | fp->frame_size = framesize; | |
27d10f56 | 2627 | return parse_audio_format_rates(chip, fp, fmt, 8); /* fmt[8..] sample rates */ |
1da177e4 LT |
2628 | } |
2629 | ||
86e07d34 | 2630 | static int parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2631 | int format, unsigned char *fmt, int stream) |
2632 | { | |
2633 | int err; | |
2634 | ||
2635 | switch (fmt[3]) { | |
2636 | case USB_FORMAT_TYPE_I: | |
2637 | case USB_FORMAT_TYPE_III: | |
27d10f56 | 2638 | err = parse_audio_format_i(chip, fp, format, fmt); |
1da177e4 LT |
2639 | break; |
2640 | case USB_FORMAT_TYPE_II: | |
27d10f56 | 2641 | err = parse_audio_format_ii(chip, fp, format, fmt); |
1da177e4 LT |
2642 | break; |
2643 | default: | |
2644 | snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n", | |
27d10f56 | 2645 | chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]); |
1da177e4 LT |
2646 | return -1; |
2647 | } | |
2648 | fp->fmt_type = fmt[3]; | |
2649 | if (err < 0) | |
2650 | return err; | |
2651 | #if 1 | |
33159378 | 2652 | /* FIXME: temporary hack for extigy/audigy 2 nx/zs */ |
1da177e4 LT |
2653 | /* extigy apparently supports sample rates other than 48k |
2654 | * but not in ordinary way. so we enable only 48k atm. | |
2655 | */ | |
27d10f56 | 2656 | if (chip->usb_id == USB_ID(0x041e, 0x3000) || |
33159378 CL |
2657 | chip->usb_id == USB_ID(0x041e, 0x3020) || |
2658 | chip->usb_id == USB_ID(0x041e, 0x3061)) { | |
1da177e4 | 2659 | if (fmt[3] == USB_FORMAT_TYPE_I && |
8c1872dc CL |
2660 | fp->rates != SNDRV_PCM_RATE_48000 && |
2661 | fp->rates != SNDRV_PCM_RATE_96000) | |
b4d3f9d4 | 2662 | return -1; |
1da177e4 LT |
2663 | } |
2664 | #endif | |
2665 | return 0; | |
2666 | } | |
2667 | ||
e311334e TLM |
2668 | static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip, |
2669 | int iface, int altno); | |
86e07d34 | 2670 | static int parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no) |
1da177e4 LT |
2671 | { |
2672 | struct usb_device *dev; | |
2673 | struct usb_interface *iface; | |
2674 | struct usb_host_interface *alts; | |
2675 | struct usb_interface_descriptor *altsd; | |
2676 | int i, altno, err, stream; | |
2677 | int format; | |
2678 | struct audioformat *fp; | |
2679 | unsigned char *fmt, *csep; | |
b9d43bcd | 2680 | int num; |
1da177e4 LT |
2681 | |
2682 | dev = chip->dev; | |
2683 | ||
2684 | /* parse the interface's altsettings */ | |
2685 | iface = usb_ifnum_to_if(dev, iface_no); | |
b9d43bcd PM |
2686 | |
2687 | num = iface->num_altsetting; | |
2688 | ||
2689 | /* | |
2690 | * Dallas DS4201 workaround: It presents 5 altsettings, but the last | |
2691 | * one misses syncpipe, and does not produce any sound. | |
2692 | */ | |
2693 | if (chip->usb_id == USB_ID(0x04fa, 0x4201)) | |
2694 | num = 4; | |
2695 | ||
2696 | for (i = 0; i < num; i++) { | |
1da177e4 LT |
2697 | alts = &iface->altsetting[i]; |
2698 | altsd = get_iface_desc(alts); | |
2699 | /* skip invalid one */ | |
2700 | if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && | |
2701 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || | |
2702 | (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING && | |
2703 | altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) || | |
2704 | altsd->bNumEndpoints < 1 || | |
2705 | le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0) | |
2706 | continue; | |
2707 | /* must be isochronous */ | |
2708 | if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != | |
2709 | USB_ENDPOINT_XFER_ISOC) | |
2710 | continue; | |
2711 | /* check direction */ | |
2712 | stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ? | |
2713 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
2714 | altno = altsd->bAlternateSetting; | |
e311334e TLM |
2715 | |
2716 | /* audiophile usb: skip altsets incompatible with device_setup | |
2717 | */ | |
2718 | if (chip->usb_id == USB_ID(0x0763, 0x2003) && | |
2719 | audiophile_skip_setting_quirk(chip, iface_no, altno)) | |
2720 | continue; | |
1da177e4 LT |
2721 | |
2722 | /* get audio formats */ | |
2723 | fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, AS_GENERAL); | |
2724 | if (!fmt) { | |
2725 | snd_printk(KERN_ERR "%d:%u:%d : AS_GENERAL descriptor not found\n", | |
2726 | dev->devnum, iface_no, altno); | |
2727 | continue; | |
2728 | } | |
2729 | ||
2730 | if (fmt[0] < 7) { | |
2731 | snd_printk(KERN_ERR "%d:%u:%d : invalid AS_GENERAL desc\n", | |
2732 | dev->devnum, iface_no, altno); | |
2733 | continue; | |
2734 | } | |
2735 | ||
2736 | format = (fmt[6] << 8) | fmt[5]; /* remember the format value */ | |
2737 | ||
2738 | /* get format type */ | |
2739 | fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, FORMAT_TYPE); | |
2740 | if (!fmt) { | |
2741 | snd_printk(KERN_ERR "%d:%u:%d : no FORMAT_TYPE desc\n", | |
2742 | dev->devnum, iface_no, altno); | |
2743 | continue; | |
2744 | } | |
2745 | if (fmt[0] < 8) { | |
2746 | snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n", | |
2747 | dev->devnum, iface_no, altno); | |
2748 | continue; | |
2749 | } | |
2750 | ||
2751 | csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT); | |
2752 | /* Creamware Noah has this descriptor after the 2nd endpoint */ | |
2753 | if (!csep && altsd->bNumEndpoints >= 2) | |
2754 | csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); | |
2755 | if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) { | |
f8c75790 | 2756 | snd_printk(KERN_WARNING "%d:%u:%d : no or invalid" |
faf8d117 | 2757 | " class specific endpoint descriptor\n", |
1da177e4 | 2758 | dev->devnum, iface_no, altno); |
faf8d117 | 2759 | csep = NULL; |
1da177e4 LT |
2760 | } |
2761 | ||
59feddb2 | 2762 | fp = kzalloc(sizeof(*fp), GFP_KERNEL); |
1da177e4 LT |
2763 | if (! fp) { |
2764 | snd_printk(KERN_ERR "cannot malloc\n"); | |
2765 | return -ENOMEM; | |
2766 | } | |
2767 | ||
1da177e4 LT |
2768 | fp->iface = iface_no; |
2769 | fp->altsetting = altno; | |
2770 | fp->altset_idx = i; | |
2771 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
2772 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
1da177e4 | 2773 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); |
573567e0 CL |
2774 | if (snd_usb_get_speed(dev) == USB_SPEED_HIGH) |
2775 | fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) | |
2776 | * (fp->maxpacksize & 0x7ff); | |
faf8d117 | 2777 | fp->attributes = csep ? csep[3] : 0; |
1da177e4 LT |
2778 | |
2779 | /* some quirks for attributes here */ | |
2780 | ||
c3f93297 CL |
2781 | switch (chip->usb_id) { |
2782 | case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */ | |
1da177e4 LT |
2783 | /* Optoplay sets the sample rate attribute although |
2784 | * it seems not supporting it in fact. | |
2785 | */ | |
2786 | fp->attributes &= ~EP_CS_ATTR_SAMPLE_RATE; | |
c3f93297 CL |
2787 | break; |
2788 | case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */ | |
2789 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
1da177e4 LT |
2790 | /* doesn't set the sample rate attribute, but supports it */ |
2791 | fp->attributes |= EP_CS_ATTR_SAMPLE_RATE; | |
c3f93297 CL |
2792 | break; |
2793 | case USB_ID(0x047f, 0x0ca1): /* plantronics headset */ | |
2794 | case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is | |
2795 | an older model 77d:223) */ | |
1da177e4 LT |
2796 | /* |
2797 | * plantronics headset and Griffin iMic have set adaptive-in | |
2798 | * although it's really not... | |
2799 | */ | |
1da177e4 LT |
2800 | fp->ep_attr &= ~EP_ATTR_MASK; |
2801 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2802 | fp->ep_attr |= EP_ATTR_ADAPTIVE; | |
2803 | else | |
2804 | fp->ep_attr |= EP_ATTR_SYNC; | |
c3f93297 | 2805 | break; |
1da177e4 LT |
2806 | } |
2807 | ||
2808 | /* ok, let's parse further... */ | |
27d10f56 | 2809 | if (parse_audio_format(chip, fp, format, fmt, stream) < 0) { |
1da177e4 LT |
2810 | kfree(fp->rate_table); |
2811 | kfree(fp); | |
2812 | continue; | |
2813 | } | |
2814 | ||
e311334e | 2815 | snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint 0x%x\n", dev->devnum, iface_no, altno, fp->endpoint); |
1da177e4 LT |
2816 | err = add_audio_endpoint(chip, stream, fp); |
2817 | if (err < 0) { | |
2818 | kfree(fp->rate_table); | |
2819 | kfree(fp); | |
2820 | return err; | |
2821 | } | |
2822 | /* try to set the interface... */ | |
2823 | usb_set_interface(chip->dev, iface_no, altno); | |
2824 | init_usb_pitch(chip->dev, iface_no, alts, fp); | |
2825 | init_usb_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max); | |
2826 | } | |
2827 | return 0; | |
2828 | } | |
2829 | ||
2830 | ||
2831 | /* | |
2832 | * disconnect streams | |
2833 | * called from snd_usb_audio_disconnect() | |
2834 | */ | |
ee733397 | 2835 | static void snd_usb_stream_disconnect(struct list_head *head) |
1da177e4 LT |
2836 | { |
2837 | int idx; | |
86e07d34 TI |
2838 | struct snd_usb_stream *as; |
2839 | struct snd_usb_substream *subs; | |
1da177e4 | 2840 | |
86e07d34 | 2841 | as = list_entry(head, struct snd_usb_stream, list); |
1da177e4 LT |
2842 | for (idx = 0; idx < 2; idx++) { |
2843 | subs = &as->substream[idx]; | |
2844 | if (!subs->num_formats) | |
2845 | return; | |
2846 | release_substream_urbs(subs, 1); | |
2847 | subs->interface = -1; | |
2848 | } | |
2849 | } | |
2850 | ||
2851 | /* | |
2852 | * parse audio control descriptor and create pcm/midi streams | |
2853 | */ | |
86e07d34 | 2854 | static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) |
1da177e4 LT |
2855 | { |
2856 | struct usb_device *dev = chip->dev; | |
2857 | struct usb_host_interface *host_iface; | |
2858 | struct usb_interface *iface; | |
2859 | unsigned char *p1; | |
2860 | int i, j; | |
2861 | ||
2862 | /* find audiocontrol interface */ | |
2863 | host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0]; | |
2864 | if (!(p1 = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen, NULL, HEADER))) { | |
2865 | snd_printk(KERN_ERR "cannot find HEADER\n"); | |
2866 | return -EINVAL; | |
2867 | } | |
2868 | if (! p1[7] || p1[0] < 8 + p1[7]) { | |
2869 | snd_printk(KERN_ERR "invalid HEADER\n"); | |
2870 | return -EINVAL; | |
2871 | } | |
2872 | ||
2873 | /* | |
2874 | * parse all USB audio streaming interfaces | |
2875 | */ | |
2876 | for (i = 0; i < p1[7]; i++) { | |
2877 | struct usb_host_interface *alts; | |
2878 | struct usb_interface_descriptor *altsd; | |
2879 | j = p1[8 + i]; | |
2880 | iface = usb_ifnum_to_if(dev, j); | |
2881 | if (!iface) { | |
2882 | snd_printk(KERN_ERR "%d:%u:%d : does not exist\n", | |
2883 | dev->devnum, ctrlif, j); | |
2884 | continue; | |
2885 | } | |
2886 | if (usb_interface_claimed(iface)) { | |
2887 | snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n", dev->devnum, ctrlif, j); | |
2888 | continue; | |
2889 | } | |
2890 | alts = &iface->altsetting[0]; | |
2891 | altsd = get_iface_desc(alts); | |
2892 | if ((altsd->bInterfaceClass == USB_CLASS_AUDIO || | |
2893 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) && | |
2894 | altsd->bInterfaceSubClass == USB_SUBCLASS_MIDI_STREAMING) { | |
2895 | if (snd_usb_create_midi_interface(chip, iface, NULL) < 0) { | |
2896 | snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n", dev->devnum, ctrlif, j); | |
2897 | continue; | |
2898 | } | |
2899 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); | |
2900 | continue; | |
2901 | } | |
2902 | if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && | |
2903 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || | |
2904 | altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING) { | |
2905 | snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n", dev->devnum, ctrlif, j, altsd->bInterfaceClass); | |
2906 | /* skip non-supported classes */ | |
2907 | continue; | |
2908 | } | |
076639f6 CL |
2909 | if (snd_usb_get_speed(dev) == USB_SPEED_LOW) { |
2910 | snd_printk(KERN_ERR "low speed audio streaming not supported\n"); | |
2911 | continue; | |
2912 | } | |
1da177e4 LT |
2913 | if (! parse_audio_endpoints(chip, j)) { |
2914 | usb_set_interface(dev, j, 0); /* reset the current interface */ | |
2915 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | return 0; | |
2920 | } | |
2921 | ||
2922 | /* | |
2923 | * create a stream for an endpoint/altsetting without proper descriptors | |
2924 | */ | |
86e07d34 | 2925 | static int create_fixed_stream_quirk(struct snd_usb_audio *chip, |
1da177e4 | 2926 | struct usb_interface *iface, |
86e07d34 | 2927 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
2928 | { |
2929 | struct audioformat *fp; | |
2930 | struct usb_host_interface *alts; | |
2931 | int stream, err; | |
b4482a4b | 2932 | unsigned *rate_table = NULL; |
1da177e4 | 2933 | |
52978be6 | 2934 | fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL); |
1da177e4 | 2935 | if (! fp) { |
52978be6 | 2936 | snd_printk(KERN_ERR "cannot memdup\n"); |
1da177e4 LT |
2937 | return -ENOMEM; |
2938 | } | |
1da177e4 LT |
2939 | if (fp->nr_rates > 0) { |
2940 | rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL); | |
2941 | if (!rate_table) { | |
2942 | kfree(fp); | |
2943 | return -ENOMEM; | |
2944 | } | |
2945 | memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates); | |
2946 | fp->rate_table = rate_table; | |
2947 | } | |
2948 | ||
2949 | stream = (fp->endpoint & USB_DIR_IN) | |
2950 | ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
2951 | err = add_audio_endpoint(chip, stream, fp); | |
2952 | if (err < 0) { | |
2953 | kfree(fp); | |
2954 | kfree(rate_table); | |
2955 | return err; | |
2956 | } | |
2957 | if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber || | |
2958 | fp->altset_idx >= iface->num_altsetting) { | |
2959 | kfree(fp); | |
2960 | kfree(rate_table); | |
2961 | return -EINVAL; | |
2962 | } | |
2963 | alts = &iface->altsetting[fp->altset_idx]; | |
2964 | usb_set_interface(chip->dev, fp->iface, 0); | |
2965 | init_usb_pitch(chip->dev, fp->iface, alts, fp); | |
2966 | init_usb_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max); | |
2967 | return 0; | |
2968 | } | |
2969 | ||
2970 | /* | |
2971 | * create a stream for an interface with proper descriptors | |
2972 | */ | |
86e07d34 | 2973 | static int create_standard_audio_quirk(struct snd_usb_audio *chip, |
d1bda045 | 2974 | struct usb_interface *iface, |
86e07d34 | 2975 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
2976 | { |
2977 | struct usb_host_interface *alts; | |
2978 | struct usb_interface_descriptor *altsd; | |
2979 | int err; | |
2980 | ||
2981 | alts = &iface->altsetting[0]; | |
2982 | altsd = get_iface_desc(alts); | |
d1bda045 | 2983 | err = parse_audio_endpoints(chip, altsd->bInterfaceNumber); |
1da177e4 LT |
2984 | if (err < 0) { |
2985 | snd_printk(KERN_ERR "cannot setup if %d: error %d\n", | |
2986 | altsd->bInterfaceNumber, err); | |
2987 | return err; | |
2988 | } | |
d1bda045 CL |
2989 | /* reset the current interface */ |
2990 | usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0); | |
1da177e4 LT |
2991 | return 0; |
2992 | } | |
2993 | ||
2994 | /* | |
2995 | * Create a stream for an Edirol UA-700/UA-25 interface. The only way | |
2996 | * to detect the sample rate is by looking at wMaxPacketSize. | |
2997 | */ | |
86e07d34 | 2998 | static int create_ua700_ua25_quirk(struct snd_usb_audio *chip, |
854af957 | 2999 | struct usb_interface *iface, |
86e07d34 | 3000 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
3001 | { |
3002 | static const struct audioformat ua_format = { | |
3003 | .format = SNDRV_PCM_FORMAT_S24_3LE, | |
3004 | .channels = 2, | |
3005 | .fmt_type = USB_FORMAT_TYPE_I, | |
3006 | .altsetting = 1, | |
3007 | .altset_idx = 1, | |
3008 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
3009 | }; | |
3010 | struct usb_host_interface *alts; | |
3011 | struct usb_interface_descriptor *altsd; | |
3012 | struct audioformat *fp; | |
3013 | int stream, err; | |
3014 | ||
3015 | /* both PCM and MIDI interfaces have 2 altsettings */ | |
3016 | if (iface->num_altsetting != 2) | |
3017 | return -ENXIO; | |
3018 | alts = &iface->altsetting[1]; | |
3019 | altsd = get_iface_desc(alts); | |
3020 | ||
3021 | if (altsd->bNumEndpoints == 2) { | |
86e07d34 | 3022 | static const struct snd_usb_midi_endpoint_info ua700_ep = { |
1da177e4 LT |
3023 | .out_cables = 0x0003, |
3024 | .in_cables = 0x0003 | |
3025 | }; | |
86e07d34 | 3026 | static const struct snd_usb_audio_quirk ua700_quirk = { |
1da177e4 LT |
3027 | .type = QUIRK_MIDI_FIXED_ENDPOINT, |
3028 | .data = &ua700_ep | |
3029 | }; | |
86e07d34 | 3030 | static const struct snd_usb_midi_endpoint_info ua25_ep = { |
1da177e4 LT |
3031 | .out_cables = 0x0001, |
3032 | .in_cables = 0x0001 | |
3033 | }; | |
86e07d34 | 3034 | static const struct snd_usb_audio_quirk ua25_quirk = { |
1da177e4 LT |
3035 | .type = QUIRK_MIDI_FIXED_ENDPOINT, |
3036 | .data = &ua25_ep | |
3037 | }; | |
27d10f56 | 3038 | if (chip->usb_id == USB_ID(0x0582, 0x002b)) |
1da177e4 LT |
3039 | return snd_usb_create_midi_interface(chip, iface, |
3040 | &ua700_quirk); | |
3041 | else | |
3042 | return snd_usb_create_midi_interface(chip, iface, | |
3043 | &ua25_quirk); | |
3044 | } | |
3045 | ||
3046 | if (altsd->bNumEndpoints != 1) | |
3047 | return -ENXIO; | |
3048 | ||
3049 | fp = kmalloc(sizeof(*fp), GFP_KERNEL); | |
3050 | if (!fp) | |
3051 | return -ENOMEM; | |
3052 | memcpy(fp, &ua_format, sizeof(*fp)); | |
3053 | ||
3054 | fp->iface = altsd->bInterfaceNumber; | |
3055 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
3056 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
3057 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); | |
3058 | ||
3059 | switch (fp->maxpacksize) { | |
3060 | case 0x120: | |
3061 | fp->rate_max = fp->rate_min = 44100; | |
3062 | break; | |
3063 | case 0x138: | |
3064 | case 0x140: | |
3065 | fp->rate_max = fp->rate_min = 48000; | |
3066 | break; | |
3067 | case 0x258: | |
3068 | case 0x260: | |
3069 | fp->rate_max = fp->rate_min = 96000; | |
3070 | break; | |
3071 | default: | |
3072 | snd_printk(KERN_ERR "unknown sample rate\n"); | |
3073 | kfree(fp); | |
3074 | return -ENXIO; | |
3075 | } | |
3076 | ||
3077 | stream = (fp->endpoint & USB_DIR_IN) | |
3078 | ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
3079 | err = add_audio_endpoint(chip, stream, fp); | |
3080 | if (err < 0) { | |
3081 | kfree(fp); | |
3082 | return err; | |
3083 | } | |
3084 | usb_set_interface(chip->dev, fp->iface, 0); | |
3085 | return 0; | |
3086 | } | |
3087 | ||
3088 | /* | |
3089 | * Create a stream for an Edirol UA-1000 interface. | |
3090 | */ | |
86e07d34 | 3091 | static int create_ua1000_quirk(struct snd_usb_audio *chip, |
854af957 | 3092 | struct usb_interface *iface, |
86e07d34 | 3093 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
3094 | { |
3095 | static const struct audioformat ua1000_format = { | |
3096 | .format = SNDRV_PCM_FORMAT_S32_LE, | |
3097 | .fmt_type = USB_FORMAT_TYPE_I, | |
3098 | .altsetting = 1, | |
3099 | .altset_idx = 1, | |
3100 | .attributes = 0, | |
3101 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
3102 | }; | |
3103 | struct usb_host_interface *alts; | |
3104 | struct usb_interface_descriptor *altsd; | |
3105 | struct audioformat *fp; | |
3106 | int stream, err; | |
3107 | ||
3108 | if (iface->num_altsetting != 2) | |
3109 | return -ENXIO; | |
3110 | alts = &iface->altsetting[1]; | |
3111 | altsd = get_iface_desc(alts); | |
c4a87ef4 | 3112 | if (alts->extralen != 11 || alts->extra[1] != USB_DT_CS_INTERFACE || |
1da177e4 LT |
3113 | altsd->bNumEndpoints != 1) |
3114 | return -ENXIO; | |
3115 | ||
52978be6 | 3116 | fp = kmemdup(&ua1000_format, sizeof(*fp), GFP_KERNEL); |
1da177e4 LT |
3117 | if (!fp) |
3118 | return -ENOMEM; | |
1da177e4 LT |
3119 | |
3120 | fp->channels = alts->extra[4]; | |
3121 | fp->iface = altsd->bInterfaceNumber; | |
3122 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
3123 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
3124 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); | |
3125 | fp->rate_max = fp->rate_min = combine_triple(&alts->extra[8]); | |
3126 | ||
3127 | stream = (fp->endpoint & USB_DIR_IN) | |
3128 | ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
3129 | err = add_audio_endpoint(chip, stream, fp); | |
3130 | if (err < 0) { | |
3131 | kfree(fp); | |
3132 | return err; | |
3133 | } | |
3134 | /* FIXME: playback must be synchronized to capture */ | |
3135 | usb_set_interface(chip->dev, fp->iface, 0); | |
3136 | return 0; | |
3137 | } | |
3138 | ||
d0b0fac1 BF |
3139 | /* |
3140 | * Create a stream for an Edirol UA-101 interface. | |
3141 | * Copy, paste and modify from Edirol UA-1000 | |
3142 | */ | |
3143 | static int create_ua101_quirk(struct snd_usb_audio *chip, | |
3144 | struct usb_interface *iface, | |
3145 | const struct snd_usb_audio_quirk *quirk) | |
3146 | { | |
3147 | static const struct audioformat ua101_format = { | |
3148 | .format = SNDRV_PCM_FORMAT_S32_LE, | |
3149 | .fmt_type = USB_FORMAT_TYPE_I, | |
3150 | .altsetting = 1, | |
3151 | .altset_idx = 1, | |
3152 | .attributes = 0, | |
3153 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
3154 | }; | |
3155 | struct usb_host_interface *alts; | |
3156 | struct usb_interface_descriptor *altsd; | |
3157 | struct audioformat *fp; | |
3158 | int stream, err; | |
3159 | ||
3160 | if (iface->num_altsetting != 2) | |
3161 | return -ENXIO; | |
3162 | alts = &iface->altsetting[1]; | |
3163 | altsd = get_iface_desc(alts); | |
3164 | if (alts->extralen != 18 || alts->extra[1] != USB_DT_CS_INTERFACE || | |
3165 | altsd->bNumEndpoints != 1) | |
3166 | return -ENXIO; | |
3167 | ||
3168 | fp = kmemdup(&ua101_format, sizeof(*fp), GFP_KERNEL); | |
3169 | if (!fp) | |
3170 | return -ENOMEM; | |
3171 | ||
3172 | fp->channels = alts->extra[11]; | |
3173 | fp->iface = altsd->bInterfaceNumber; | |
3174 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
3175 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
3176 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); | |
3177 | fp->rate_max = fp->rate_min = combine_triple(&alts->extra[15]); | |
3178 | ||
3179 | stream = (fp->endpoint & USB_DIR_IN) | |
3180 | ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
3181 | err = add_audio_endpoint(chip, stream, fp); | |
3182 | if (err < 0) { | |
3183 | kfree(fp); | |
3184 | return err; | |
3185 | } | |
3186 | /* FIXME: playback must be synchronized to capture */ | |
3187 | usb_set_interface(chip->dev, fp->iface, 0); | |
3188 | return 0; | |
3189 | } | |
3190 | ||
86e07d34 | 3191 | static int snd_usb_create_quirk(struct snd_usb_audio *chip, |
1da177e4 | 3192 | struct usb_interface *iface, |
86e07d34 | 3193 | const struct snd_usb_audio_quirk *quirk); |
1da177e4 LT |
3194 | |
3195 | /* | |
3196 | * handle the quirks for the contained interfaces | |
3197 | */ | |
86e07d34 | 3198 | static int create_composite_quirk(struct snd_usb_audio *chip, |
1da177e4 | 3199 | struct usb_interface *iface, |
86e07d34 | 3200 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
3201 | { |
3202 | int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber; | |
3203 | int err; | |
3204 | ||
3205 | for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) { | |
3206 | iface = usb_ifnum_to_if(chip->dev, quirk->ifnum); | |
3207 | if (!iface) | |
3208 | continue; | |
3209 | if (quirk->ifnum != probed_ifnum && | |
3210 | usb_interface_claimed(iface)) | |
3211 | continue; | |
3212 | err = snd_usb_create_quirk(chip, iface, quirk); | |
3213 | if (err < 0) | |
3214 | return err; | |
3215 | if (quirk->ifnum != probed_ifnum) | |
3216 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); | |
3217 | } | |
3218 | return 0; | |
3219 | } | |
3220 | ||
86e07d34 | 3221 | static int ignore_interface_quirk(struct snd_usb_audio *chip, |
854af957 | 3222 | struct usb_interface *iface, |
86e07d34 | 3223 | const struct snd_usb_audio_quirk *quirk) |
854af957 CL |
3224 | { |
3225 | return 0; | |
3226 | } | |
3227 | ||
1da177e4 LT |
3228 | |
3229 | /* | |
3230 | * boot quirks | |
3231 | */ | |
3232 | ||
3233 | #define EXTIGY_FIRMWARE_SIZE_OLD 794 | |
3234 | #define EXTIGY_FIRMWARE_SIZE_NEW 483 | |
3235 | ||
3236 | static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf) | |
3237 | { | |
3238 | struct usb_host_config *config = dev->actconfig; | |
3239 | int err; | |
3240 | ||
3241 | if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD || | |
3242 | le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) { | |
3243 | snd_printdd("sending Extigy boot sequence...\n"); | |
3244 | /* Send message to force it to reconnect with full interface. */ | |
3245 | err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0), | |
3246 | 0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000); | |
3247 | if (err < 0) snd_printdd("error sending boot message: %d\n", err); | |
3248 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, | |
3249 | &dev->descriptor, sizeof(dev->descriptor)); | |
3250 | config = dev->actconfig; | |
3251 | if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err); | |
3252 | err = usb_reset_configuration(dev); | |
3253 | if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err); | |
3254 | snd_printdd("extigy_boot: new boot length = %d\n", | |
3255 | le16_to_cpu(get_cfg_desc(config)->wTotalLength)); | |
3256 | return -ENODEV; /* quit this anyway */ | |
3257 | } | |
3258 | return 0; | |
3259 | } | |
3260 | ||
3a2f0856 CL |
3261 | static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev) |
3262 | { | |
3a2f0856 CL |
3263 | u8 buf = 1; |
3264 | ||
3265 | snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a, | |
3266 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER, | |
3267 | 0, 0, &buf, 1, 1000); | |
3268 | if (buf == 0) { | |
3269 | snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29, | |
3270 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, | |
3271 | 1, 2000, NULL, 0, 1000); | |
3272 | return -ENODEV; | |
3273 | } | |
3a2f0856 CL |
3274 | return 0; |
3275 | } | |
3276 | ||
e217e30c SR |
3277 | /* |
3278 | * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely | |
3279 | * documented in the device's data sheet. | |
3280 | */ | |
3281 | static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value) | |
3282 | { | |
3283 | u8 buf[4]; | |
3284 | buf[0] = 0x20; | |
3285 | buf[1] = value & 0xff; | |
3286 | buf[2] = (value >> 8) & 0xff; | |
3287 | buf[3] = reg; | |
3288 | return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION, | |
3289 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, | |
3290 | 0, 0, &buf, 4, 1000); | |
3291 | } | |
3292 | ||
3293 | static int snd_usb_cm106_boot_quirk(struct usb_device *dev) | |
3294 | { | |
3295 | /* | |
3296 | * Enable line-out driver mode, set headphone source to front | |
3297 | * channels, enable stereo mic. | |
3298 | */ | |
3299 | return snd_usb_cm106_write_int_reg(dev, 2, 0x8004); | |
3300 | } | |
3301 | ||
3302 | ||
e311334e TLM |
3303 | /* |
3304 | * Setup quirks | |
3305 | */ | |
3306 | #define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */ | |
3307 | #define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */ | |
3308 | #define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */ | |
3309 | #define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */ | |
3310 | #define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */ | |
3311 | #define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */ | |
3312 | #define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */ | |
3313 | #define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */ | |
3314 | #define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */ | |
3315 | #define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */ | |
3316 | ||
3317 | static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip, | |
3318 | int iface, int altno) | |
3319 | { | |
f8c78b82 TLM |
3320 | /* Reset ALL ifaces to 0 altsetting. |
3321 | * Call it for every possible altsetting of every interface. | |
3322 | */ | |
3323 | usb_set_interface(chip->dev, iface, 0); | |
3324 | ||
e311334e TLM |
3325 | if (device_setup[chip->index] & AUDIOPHILE_SET) { |
3326 | if ((device_setup[chip->index] & AUDIOPHILE_SET_DTS) | |
3327 | && altno != 6) | |
3328 | return 1; /* skip this altsetting */ | |
3329 | if ((device_setup[chip->index] & AUDIOPHILE_SET_96K) | |
3330 | && altno != 1) | |
3331 | return 1; /* skip this altsetting */ | |
3332 | if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == | |
3333 | AUDIOPHILE_SET_24B_48K_DI && altno != 2) | |
3334 | return 1; /* skip this altsetting */ | |
3335 | if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == | |
3336 | AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3) | |
3337 | return 1; /* skip this altsetting */ | |
3338 | if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == | |
3339 | AUDIOPHILE_SET_16B_48K_DI && altno != 4) | |
3340 | return 1; /* skip this altsetting */ | |
3341 | if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == | |
3342 | AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5) | |
3343 | return 1; /* skip this altsetting */ | |
3344 | } | |
3345 | return 0; /* keep this altsetting */ | |
3346 | } | |
1da177e4 LT |
3347 | |
3348 | /* | |
3349 | * audio-interface quirks | |
3350 | * | |
3351 | * returns zero if no standard audio/MIDI parsing is needed. | |
3352 | * returns a postive value if standard audio/midi interfaces are parsed | |
3353 | * after this. | |
3354 | * returns a negative value at error. | |
3355 | */ | |
86e07d34 | 3356 | static int snd_usb_create_quirk(struct snd_usb_audio *chip, |
1da177e4 | 3357 | struct usb_interface *iface, |
86e07d34 | 3358 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 | 3359 | { |
86e07d34 TI |
3360 | typedef int (*quirk_func_t)(struct snd_usb_audio *, struct usb_interface *, |
3361 | const struct snd_usb_audio_quirk *); | |
854af957 CL |
3362 | static const quirk_func_t quirk_funcs[] = { |
3363 | [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk, | |
3364 | [QUIRK_COMPOSITE] = create_composite_quirk, | |
3365 | [QUIRK_MIDI_STANDARD_INTERFACE] = snd_usb_create_midi_interface, | |
3366 | [QUIRK_MIDI_FIXED_ENDPOINT] = snd_usb_create_midi_interface, | |
3367 | [QUIRK_MIDI_YAMAHA] = snd_usb_create_midi_interface, | |
3368 | [QUIRK_MIDI_MIDIMAN] = snd_usb_create_midi_interface, | |
3369 | [QUIRK_MIDI_NOVATION] = snd_usb_create_midi_interface, | |
3370 | [QUIRK_MIDI_RAW] = snd_usb_create_midi_interface, | |
3371 | [QUIRK_MIDI_EMAGIC] = snd_usb_create_midi_interface, | |
cc7a59bd | 3372 | [QUIRK_MIDI_CME] = snd_usb_create_midi_interface, |
d1bda045 | 3373 | [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk, |
854af957 CL |
3374 | [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk, |
3375 | [QUIRK_AUDIO_EDIROL_UA700_UA25] = create_ua700_ua25_quirk, | |
3376 | [QUIRK_AUDIO_EDIROL_UA1000] = create_ua1000_quirk, | |
d0b0fac1 | 3377 | [QUIRK_AUDIO_EDIROL_UA101] = create_ua101_quirk, |
854af957 CL |
3378 | }; |
3379 | ||
3380 | if (quirk->type < QUIRK_TYPE_COUNT) { | |
3381 | return quirk_funcs[quirk->type](chip, iface, quirk); | |
3382 | } else { | |
1da177e4 LT |
3383 | snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); |
3384 | return -ENXIO; | |
3385 | } | |
3386 | } | |
3387 | ||
3388 | ||
3389 | /* | |
3390 | * common proc files to show the usb device info | |
3391 | */ | |
86e07d34 | 3392 | static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
1da177e4 | 3393 | { |
86e07d34 | 3394 | struct snd_usb_audio *chip = entry->private_data; |
1da177e4 LT |
3395 | if (! chip->shutdown) |
3396 | snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum); | |
3397 | } | |
3398 | ||
86e07d34 | 3399 | static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
1da177e4 | 3400 | { |
86e07d34 | 3401 | struct snd_usb_audio *chip = entry->private_data; |
1da177e4 LT |
3402 | if (! chip->shutdown) |
3403 | snd_iprintf(buffer, "%04x:%04x\n", | |
27d10f56 CL |
3404 | USB_ID_VENDOR(chip->usb_id), |
3405 | USB_ID_PRODUCT(chip->usb_id)); | |
1da177e4 LT |
3406 | } |
3407 | ||
86e07d34 | 3408 | static void snd_usb_audio_create_proc(struct snd_usb_audio *chip) |
1da177e4 | 3409 | { |
86e07d34 | 3410 | struct snd_info_entry *entry; |
1da177e4 | 3411 | if (! snd_card_proc_new(chip->card, "usbbus", &entry)) |
bf850204 | 3412 | snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read); |
1da177e4 | 3413 | if (! snd_card_proc_new(chip->card, "usbid", &entry)) |
bf850204 | 3414 | snd_info_set_text_ops(entry, chip, proc_audio_usbid_read); |
1da177e4 LT |
3415 | } |
3416 | ||
3417 | /* | |
3418 | * free the chip instance | |
3419 | * | |
3420 | * here we have to do not much, since pcm and controls are already freed | |
3421 | * | |
3422 | */ | |
3423 | ||
86e07d34 | 3424 | static int snd_usb_audio_free(struct snd_usb_audio *chip) |
1da177e4 | 3425 | { |
2a2a5ddd | 3426 | usb_chip[chip->index] = NULL; |
1da177e4 LT |
3427 | kfree(chip); |
3428 | return 0; | |
3429 | } | |
3430 | ||
86e07d34 | 3431 | static int snd_usb_audio_dev_free(struct snd_device *device) |
1da177e4 | 3432 | { |
86e07d34 | 3433 | struct snd_usb_audio *chip = device->device_data; |
1da177e4 LT |
3434 | return snd_usb_audio_free(chip); |
3435 | } | |
3436 | ||
3437 | ||
3438 | /* | |
3439 | * create a chip instance and set its names. | |
3440 | */ | |
3441 | static int snd_usb_audio_create(struct usb_device *dev, int idx, | |
86e07d34 TI |
3442 | const struct snd_usb_audio_quirk *quirk, |
3443 | struct snd_usb_audio **rchip) | |
1da177e4 | 3444 | { |
86e07d34 TI |
3445 | struct snd_card *card; |
3446 | struct snd_usb_audio *chip; | |
1da177e4 LT |
3447 | int err, len; |
3448 | char component[14]; | |
86e07d34 | 3449 | static struct snd_device_ops ops = { |
1da177e4 LT |
3450 | .dev_free = snd_usb_audio_dev_free, |
3451 | }; | |
3452 | ||
3453 | *rchip = NULL; | |
3454 | ||
076639f6 CL |
3455 | if (snd_usb_get_speed(dev) != USB_SPEED_LOW && |
3456 | snd_usb_get_speed(dev) != USB_SPEED_FULL && | |
1da177e4 LT |
3457 | snd_usb_get_speed(dev) != USB_SPEED_HIGH) { |
3458 | snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev)); | |
3459 | return -ENXIO; | |
3460 | } | |
3461 | ||
3462 | card = snd_card_new(index[idx], id[idx], THIS_MODULE, 0); | |
3463 | if (card == NULL) { | |
3464 | snd_printk(KERN_ERR "cannot create card instance %d\n", idx); | |
3465 | return -ENOMEM; | |
3466 | } | |
3467 | ||
561b220a | 3468 | chip = kzalloc(sizeof(*chip), GFP_KERNEL); |
1da177e4 LT |
3469 | if (! chip) { |
3470 | snd_card_free(card); | |
3471 | return -ENOMEM; | |
3472 | } | |
3473 | ||
3474 | chip->index = idx; | |
3475 | chip->dev = dev; | |
3476 | chip->card = card; | |
27d10f56 CL |
3477 | chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), |
3478 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 LT |
3479 | INIT_LIST_HEAD(&chip->pcm_list); |
3480 | INIT_LIST_HEAD(&chip->midi_list); | |
84957a8a | 3481 | INIT_LIST_HEAD(&chip->mixer_list); |
1da177e4 LT |
3482 | |
3483 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { | |
3484 | snd_usb_audio_free(chip); | |
3485 | snd_card_free(card); | |
3486 | return err; | |
3487 | } | |
3488 | ||
3489 | strcpy(card->driver, "USB-Audio"); | |
3490 | sprintf(component, "USB%04x:%04x", | |
27d10f56 | 3491 | USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id)); |
1da177e4 LT |
3492 | snd_component_add(card, component); |
3493 | ||
3494 | /* retrieve the device string as shortname */ | |
3495 | if (quirk && quirk->product_name) { | |
3496 | strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname)); | |
3497 | } else { | |
3498 | if (!dev->descriptor.iProduct || | |
3499 | usb_string(dev, dev->descriptor.iProduct, | |
3500 | card->shortname, sizeof(card->shortname)) <= 0) { | |
3501 | /* no name available from anywhere, so use ID */ | |
3502 | sprintf(card->shortname, "USB Device %#04x:%#04x", | |
27d10f56 CL |
3503 | USB_ID_VENDOR(chip->usb_id), |
3504 | USB_ID_PRODUCT(chip->usb_id)); | |
1da177e4 LT |
3505 | } |
3506 | } | |
3507 | ||
3508 | /* retrieve the vendor and device strings as longname */ | |
3509 | if (quirk && quirk->vendor_name) { | |
3510 | len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname)); | |
3511 | } else { | |
3512 | if (dev->descriptor.iManufacturer) | |
3513 | len = usb_string(dev, dev->descriptor.iManufacturer, | |
3514 | card->longname, sizeof(card->longname)); | |
3515 | else | |
3516 | len = 0; | |
3517 | /* we don't really care if there isn't any vendor string */ | |
3518 | } | |
3519 | if (len > 0) | |
3520 | strlcat(card->longname, " ", sizeof(card->longname)); | |
3521 | ||
3522 | strlcat(card->longname, card->shortname, sizeof(card->longname)); | |
3523 | ||
3524 | len = strlcat(card->longname, " at ", sizeof(card->longname)); | |
3525 | ||
3526 | if (len < sizeof(card->longname)) | |
3527 | usb_make_path(dev, card->longname + len, sizeof(card->longname) - len); | |
3528 | ||
3529 | strlcat(card->longname, | |
076639f6 CL |
3530 | snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" : |
3531 | snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" : | |
3532 | ", high speed", | |
1da177e4 LT |
3533 | sizeof(card->longname)); |
3534 | ||
3535 | snd_usb_audio_create_proc(chip); | |
3536 | ||
1da177e4 LT |
3537 | *rchip = chip; |
3538 | return 0; | |
3539 | } | |
3540 | ||
3541 | ||
3542 | /* | |
3543 | * probe the active usb device | |
3544 | * | |
3545 | * note that this can be called multiple times per a device, when it | |
3546 | * includes multiple audio control interfaces. | |
3547 | * | |
3548 | * thus we check the usb device pointer and creates the card instance | |
3549 | * only at the first time. the successive calls of this function will | |
3550 | * append the pcm interface to the corresponding card. | |
3551 | */ | |
3552 | static void *snd_usb_audio_probe(struct usb_device *dev, | |
3553 | struct usb_interface *intf, | |
3554 | const struct usb_device_id *usb_id) | |
3555 | { | |
86e07d34 | 3556 | const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info; |
1da177e4 | 3557 | int i, err; |
86e07d34 | 3558 | struct snd_usb_audio *chip; |
1da177e4 LT |
3559 | struct usb_host_interface *alts; |
3560 | int ifnum; | |
27d10f56 | 3561 | u32 id; |
1da177e4 LT |
3562 | |
3563 | alts = &intf->altsetting[0]; | |
3564 | ifnum = get_iface_desc(alts)->bInterfaceNumber; | |
27d10f56 CL |
3565 | id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), |
3566 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 LT |
3567 | |
3568 | if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum) | |
3569 | goto __err_val; | |
3570 | ||
3571 | /* SB Extigy needs special boot-up sequence */ | |
3572 | /* if more models come, this will go to the quirk list. */ | |
27d10f56 | 3573 | if (id == USB_ID(0x041e, 0x3000)) { |
1da177e4 LT |
3574 | if (snd_usb_extigy_boot_quirk(dev, intf) < 0) |
3575 | goto __err_val; | |
1da177e4 | 3576 | } |
3a2f0856 CL |
3577 | /* SB Audigy 2 NX needs its own boot-up magic, too */ |
3578 | if (id == USB_ID(0x041e, 0x3020)) { | |
3579 | if (snd_usb_audigy2nx_boot_quirk(dev) < 0) | |
3580 | goto __err_val; | |
3581 | } | |
1da177e4 | 3582 | |
e217e30c SR |
3583 | /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */ |
3584 | if (id == USB_ID(0x10f5, 0x0200)) { | |
3585 | if (snd_usb_cm106_boot_quirk(dev) < 0) | |
3586 | goto __err_val; | |
3587 | } | |
3588 | ||
1da177e4 LT |
3589 | /* |
3590 | * found a config. now register to ALSA | |
3591 | */ | |
3592 | ||
3593 | /* check whether it's already registered */ | |
3594 | chip = NULL; | |
12aa7579 | 3595 | mutex_lock(®ister_mutex); |
1da177e4 LT |
3596 | for (i = 0; i < SNDRV_CARDS; i++) { |
3597 | if (usb_chip[i] && usb_chip[i]->dev == dev) { | |
3598 | if (usb_chip[i]->shutdown) { | |
3599 | snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n"); | |
3600 | goto __error; | |
3601 | } | |
3602 | chip = usb_chip[i]; | |
3603 | break; | |
3604 | } | |
3605 | } | |
3606 | if (! chip) { | |
3607 | /* it's a fresh one. | |
3608 | * now look for an empty slot and create a new card instance | |
3609 | */ | |
1da177e4 LT |
3610 | for (i = 0; i < SNDRV_CARDS; i++) |
3611 | if (enable[i] && ! usb_chip[i] && | |
27d10f56 CL |
3612 | (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) && |
3613 | (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) { | |
1da177e4 LT |
3614 | if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) { |
3615 | goto __error; | |
3616 | } | |
1dcd3ec4 | 3617 | snd_card_set_dev(chip->card, &intf->dev); |
1da177e4 LT |
3618 | break; |
3619 | } | |
3620 | if (! chip) { | |
3621 | snd_printk(KERN_ERR "no available usb audio device\n"); | |
3622 | goto __error; | |
3623 | } | |
3624 | } | |
3625 | ||
3626 | err = 1; /* continue */ | |
3627 | if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) { | |
3628 | /* need some special handlings */ | |
3629 | if ((err = snd_usb_create_quirk(chip, intf, quirk)) < 0) | |
3630 | goto __error; | |
3631 | } | |
3632 | ||
3633 | if (err > 0) { | |
3634 | /* create normal USB audio interfaces */ | |
3635 | if (snd_usb_create_streams(chip, ifnum) < 0 || | |
3636 | snd_usb_create_mixer(chip, ifnum) < 0) { | |
3637 | goto __error; | |
3638 | } | |
3639 | } | |
3640 | ||
3641 | /* we are allowed to call snd_card_register() many times */ | |
3642 | if (snd_card_register(chip->card) < 0) { | |
3643 | goto __error; | |
3644 | } | |
3645 | ||
3646 | usb_chip[chip->index] = chip; | |
3647 | chip->num_interfaces++; | |
12aa7579 | 3648 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
3649 | return chip; |
3650 | ||
3651 | __error: | |
3652 | if (chip && !chip->num_interfaces) | |
3653 | snd_card_free(chip->card); | |
12aa7579 | 3654 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
3655 | __err_val: |
3656 | return NULL; | |
3657 | } | |
3658 | ||
3659 | /* | |
3660 | * we need to take care of counter, since disconnection can be called also | |
3661 | * many times as well as usb_audio_probe(). | |
3662 | */ | |
3663 | static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr) | |
3664 | { | |
86e07d34 TI |
3665 | struct snd_usb_audio *chip; |
3666 | struct snd_card *card; | |
1da177e4 LT |
3667 | struct list_head *p; |
3668 | ||
3669 | if (ptr == (void *)-1L) | |
3670 | return; | |
3671 | ||
3672 | chip = ptr; | |
3673 | card = chip->card; | |
12aa7579 | 3674 | mutex_lock(®ister_mutex); |
1da177e4 LT |
3675 | chip->shutdown = 1; |
3676 | chip->num_interfaces--; | |
3677 | if (chip->num_interfaces <= 0) { | |
3678 | snd_card_disconnect(card); | |
3679 | /* release the pcm resources */ | |
3680 | list_for_each(p, &chip->pcm_list) { | |
ee733397 | 3681 | snd_usb_stream_disconnect(p); |
1da177e4 LT |
3682 | } |
3683 | /* release the midi resources */ | |
3684 | list_for_each(p, &chip->midi_list) { | |
ee733397 | 3685 | snd_usbmidi_disconnect(p); |
1da177e4 | 3686 | } |
84957a8a CL |
3687 | /* release mixer resources */ |
3688 | list_for_each(p, &chip->mixer_list) { | |
3689 | snd_usb_mixer_disconnect(p); | |
3690 | } | |
12aa7579 | 3691 | mutex_unlock(®ister_mutex); |
c461482c | 3692 | snd_card_free_when_closed(card); |
1da177e4 | 3693 | } else { |
12aa7579 | 3694 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
3695 | } |
3696 | } | |
3697 | ||
3698 | /* | |
3699 | * new 2.5 USB kernel API | |
3700 | */ | |
3701 | static int usb_audio_probe(struct usb_interface *intf, | |
3702 | const struct usb_device_id *id) | |
3703 | { | |
3704 | void *chip; | |
3705 | chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id); | |
3706 | if (chip) { | |
3707 | dev_set_drvdata(&intf->dev, chip); | |
3708 | return 0; | |
3709 | } else | |
3710 | return -EIO; | |
3711 | } | |
3712 | ||
3713 | static void usb_audio_disconnect(struct usb_interface *intf) | |
3714 | { | |
3715 | snd_usb_audio_disconnect(interface_to_usbdev(intf), | |
3716 | dev_get_drvdata(&intf->dev)); | |
3717 | } | |
3718 | ||
93521d27 | 3719 | #ifdef CONFIG_PM |
f85bf29c ON |
3720 | static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) |
3721 | { | |
3722 | struct snd_usb_audio *chip = dev_get_drvdata(&intf->dev); | |
3723 | struct list_head *p; | |
3724 | struct snd_usb_stream *as; | |
3725 | ||
3726 | if (chip == (void *)-1L) | |
3727 | return 0; | |
3728 | ||
3729 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); | |
3730 | if (!chip->num_suspended_intf++) { | |
3731 | list_for_each(p, &chip->pcm_list) { | |
3732 | as = list_entry(p, struct snd_usb_stream, list); | |
3733 | snd_pcm_suspend_all(as->pcm); | |
3734 | } | |
3735 | } | |
3736 | ||
3737 | return 0; | |
3738 | } | |
3739 | ||
3740 | static int usb_audio_resume(struct usb_interface *intf) | |
3741 | { | |
3742 | struct snd_usb_audio *chip = dev_get_drvdata(&intf->dev); | |
3743 | ||
3744 | if (chip == (void *)-1L) | |
3745 | return 0; | |
3746 | if (--chip->num_suspended_intf) | |
3747 | return 0; | |
3748 | /* | |
3749 | * ALSA leaves material resumption to user space | |
3750 | * we just notify | |
3751 | */ | |
3752 | ||
3753 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); | |
3754 | ||
3755 | return 0; | |
3756 | } | |
93521d27 | 3757 | #endif /* CONFIG_PM */ |
1da177e4 LT |
3758 | |
3759 | static int __init snd_usb_audio_init(void) | |
3760 | { | |
3761 | if (nrpacks < MIN_PACKS_URB || nrpacks > MAX_PACKS) { | |
3762 | printk(KERN_WARNING "invalid nrpacks value.\n"); | |
3763 | return -EINVAL; | |
3764 | } | |
cf78bbc4 | 3765 | return usb_register(&usb_audio_driver); |
1da177e4 LT |
3766 | } |
3767 | ||
3768 | ||
3769 | static void __exit snd_usb_audio_cleanup(void) | |
3770 | { | |
3771 | usb_deregister(&usb_audio_driver); | |
3772 | } | |
3773 | ||
3774 | module_init(snd_usb_audio_init); | |
3775 | module_exit(snd_usb_audio_cleanup); |