Commit | Line | Data |
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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 */ | |
07f51a72 PM |
67 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */ |
68 | /* Vendor/product IDs for this card */ | |
69 | static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; | |
70 | static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; | |
92b9ac78 | 71 | static int nrpacks = 8; /* max. number of packets per urb */ |
1da177e4 | 72 | static int async_unlink = 1; |
e311334e | 73 | static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/ |
1da177e4 LT |
74 | |
75 | module_param_array(index, int, NULL, 0444); | |
76 | MODULE_PARM_DESC(index, "Index value for the USB audio adapter."); | |
77 | module_param_array(id, charp, NULL, 0444); | |
78 | MODULE_PARM_DESC(id, "ID string for the USB audio adapter."); | |
79 | module_param_array(enable, bool, NULL, 0444); | |
80 | MODULE_PARM_DESC(enable, "Enable USB audio adapter."); | |
81 | module_param_array(vid, int, NULL, 0444); | |
82 | MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device."); | |
83 | module_param_array(pid, int, NULL, 0444); | |
84 | MODULE_PARM_DESC(pid, "Product ID for the USB audio device."); | |
71d848ca | 85 | module_param(nrpacks, int, 0644); |
1da177e4 LT |
86 | MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB."); |
87 | module_param(async_unlink, bool, 0444); | |
88 | MODULE_PARM_DESC(async_unlink, "Use async unlink mode."); | |
e311334e TLM |
89 | module_param_array(device_setup, int, NULL, 0444); |
90 | MODULE_PARM_DESC(device_setup, "Specific device setup (if needed)."); | |
1da177e4 LT |
91 | |
92 | ||
93 | /* | |
94 | * debug the h/w constraints | |
95 | */ | |
96 | /* #define HW_CONST_DEBUG */ | |
97 | ||
98 | ||
99 | /* | |
100 | * | |
101 | */ | |
102 | ||
92b9ac78 | 103 | #define MAX_PACKS 20 |
1da177e4 | 104 | #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ |
15a24c07 | 105 | #define MAX_URBS 8 |
604cf499 | 106 | #define SYNC_URBS 4 /* always four urbs for sync */ |
1da177e4 LT |
107 | #define MIN_PACKS_URB 1 /* minimum 1 packet per urb */ |
108 | ||
1da177e4 LT |
109 | struct audioformat { |
110 | struct list_head list; | |
111 | snd_pcm_format_t format; /* format type */ | |
112 | unsigned int channels; /* # channels */ | |
113 | unsigned int fmt_type; /* USB audio format type (1-3) */ | |
114 | unsigned int frame_size; /* samples per frame for non-audio */ | |
115 | int iface; /* interface number */ | |
116 | unsigned char altsetting; /* corresponding alternate setting */ | |
117 | unsigned char altset_idx; /* array index of altenate setting */ | |
118 | unsigned char attributes; /* corresponding attributes of cs endpoint */ | |
119 | unsigned char endpoint; /* endpoint */ | |
120 | unsigned char ep_attr; /* endpoint attributes */ | |
121 | unsigned int maxpacksize; /* max. packet size */ | |
122 | unsigned int rates; /* rate bitmasks */ | |
123 | unsigned int rate_min, rate_max; /* min/max rates */ | |
124 | unsigned int nr_rates; /* number of rate table entries */ | |
125 | unsigned int *rate_table; /* rate table */ | |
126 | }; | |
127 | ||
86e07d34 TI |
128 | struct snd_usb_substream; |
129 | ||
1da177e4 LT |
130 | struct snd_urb_ctx { |
131 | struct urb *urb; | |
55851f73 | 132 | unsigned int buffer_size; /* size of data buffer, if data URB */ |
86e07d34 | 133 | struct snd_usb_substream *subs; |
1da177e4 LT |
134 | int index; /* index for urb array */ |
135 | int packets; /* number of packets per urb */ | |
1da177e4 LT |
136 | }; |
137 | ||
138 | struct snd_urb_ops { | |
86e07d34 TI |
139 | int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); |
140 | int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); | |
141 | int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); | |
142 | int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); | |
1da177e4 LT |
143 | }; |
144 | ||
145 | struct snd_usb_substream { | |
86e07d34 | 146 | struct snd_usb_stream *stream; |
1da177e4 | 147 | struct usb_device *dev; |
86e07d34 | 148 | struct snd_pcm_substream *pcm_substream; |
1da177e4 LT |
149 | int direction; /* playback or capture */ |
150 | int interface; /* current interface */ | |
151 | int endpoint; /* assigned endpoint */ | |
152 | struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */ | |
153 | unsigned int cur_rate; /* current rate (for hw_params callback) */ | |
154 | unsigned int period_bytes; /* current period bytes (for hw_params callback) */ | |
155 | unsigned int format; /* USB data format */ | |
156 | unsigned int datapipe; /* the data i/o pipe */ | |
157 | unsigned int syncpipe; /* 1 - async out or adaptive in */ | |
573567e0 | 158 | unsigned int datainterval; /* log_2 of data packet interval */ |
1da177e4 LT |
159 | unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */ |
160 | unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */ | |
161 | unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */ | |
162 | unsigned int freqmax; /* maximum sampling rate, used for buffer management */ | |
163 | unsigned int phase; /* phase accumulator */ | |
164 | unsigned int maxpacksize; /* max packet size in bytes */ | |
165 | unsigned int maxframesize; /* max packet size in frames */ | |
166 | unsigned int curpacksize; /* current packet size in bytes (for capture) */ | |
167 | unsigned int curframesize; /* current packet size in frames (for capture) */ | |
168 | unsigned int fill_max: 1; /* fill max packet size always */ | |
169 | unsigned int fmt_type; /* USB audio format type (1-3) */ | |
9624ea81 | 170 | unsigned int packs_per_ms; /* packets per millisecond (for playback) */ |
1da177e4 LT |
171 | |
172 | unsigned int running: 1; /* running status */ | |
173 | ||
1da177e4 | 174 | unsigned int hwptr_done; /* processed frame position in the buffer */ |
1da177e4 LT |
175 | unsigned int transfer_done; /* processed frames since last period update */ |
176 | unsigned long active_mask; /* bitmask of active urbs */ | |
177 | unsigned long unlink_mask; /* bitmask of unlinked urbs */ | |
178 | ||
179 | unsigned int nurbs; /* # urbs */ | |
86e07d34 TI |
180 | struct snd_urb_ctx dataurb[MAX_URBS]; /* data urb table */ |
181 | struct snd_urb_ctx syncurb[SYNC_URBS]; /* sync urb table */ | |
55851f73 CL |
182 | char *syncbuf; /* sync buffer for all sync URBs */ |
183 | dma_addr_t sync_dma; /* DMA address of syncbuf */ | |
1da177e4 LT |
184 | |
185 | u64 formats; /* format bitmasks (all or'ed) */ | |
186 | unsigned int num_formats; /* number of supported audio formats (list) */ | |
187 | struct list_head fmt_list; /* format list */ | |
8fec560d | 188 | struct snd_pcm_hw_constraint_list rate_list; /* limited rates */ |
1da177e4 LT |
189 | spinlock_t lock; |
190 | ||
191 | struct snd_urb_ops ops; /* callbacks (must be filled at init) */ | |
192 | }; | |
193 | ||
194 | ||
195 | struct snd_usb_stream { | |
86e07d34 TI |
196 | struct snd_usb_audio *chip; |
197 | struct snd_pcm *pcm; | |
1da177e4 LT |
198 | int pcm_index; |
199 | unsigned int fmt_type; /* USB audio format type (1-3) */ | |
86e07d34 | 200 | struct snd_usb_substream substream[2]; |
1da177e4 LT |
201 | struct list_head list; |
202 | }; | |
203 | ||
204 | ||
205 | /* | |
206 | * we keep the snd_usb_audio_t instances by ourselves for merging | |
207 | * the all interfaces on the same card as one sound device. | |
208 | */ | |
209 | ||
12aa7579 | 210 | static DEFINE_MUTEX(register_mutex); |
86e07d34 | 211 | static struct snd_usb_audio *usb_chip[SNDRV_CARDS]; |
1da177e4 LT |
212 | |
213 | ||
214 | /* | |
215 | * convert a sampling rate into our full speed format (fs/1000 in Q16.16) | |
216 | * this will overflow at approx 524 kHz | |
217 | */ | |
77933d72 | 218 | static inline unsigned get_usb_full_speed_rate(unsigned int rate) |
1da177e4 LT |
219 | { |
220 | return ((rate << 13) + 62) / 125; | |
221 | } | |
222 | ||
223 | /* | |
224 | * convert a sampling rate into USB high speed format (fs/8000 in Q16.16) | |
225 | * this will overflow at approx 4 MHz | |
226 | */ | |
77933d72 | 227 | static inline unsigned get_usb_high_speed_rate(unsigned int rate) |
1da177e4 LT |
228 | { |
229 | return ((rate << 10) + 62) / 125; | |
230 | } | |
231 | ||
232 | /* convert our full speed USB rate into sampling rate in Hz */ | |
77933d72 | 233 | static inline unsigned get_full_speed_hz(unsigned int usb_rate) |
1da177e4 LT |
234 | { |
235 | return (usb_rate * 125 + (1 << 12)) >> 13; | |
236 | } | |
237 | ||
238 | /* convert our high speed USB rate into sampling rate in Hz */ | |
77933d72 | 239 | static inline unsigned get_high_speed_hz(unsigned int usb_rate) |
1da177e4 LT |
240 | { |
241 | return (usb_rate * 125 + (1 << 9)) >> 10; | |
242 | } | |
243 | ||
244 | ||
245 | /* | |
246 | * prepare urb for full speed capture sync pipe | |
247 | * | |
248 | * fill the length and offset of each urb descriptor. | |
249 | * the fixed 10.14 frequency is passed through the pipe. | |
250 | */ | |
86e07d34 TI |
251 | static int prepare_capture_sync_urb(struct snd_usb_substream *subs, |
252 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
253 | struct urb *urb) |
254 | { | |
255 | unsigned char *cp = urb->transfer_buffer; | |
88518275 | 256 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 | 257 | |
1da177e4 | 258 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ |
ca81090a CL |
259 | urb->iso_frame_desc[0].length = 3; |
260 | urb->iso_frame_desc[0].offset = 0; | |
261 | cp[0] = subs->freqn >> 2; | |
262 | cp[1] = subs->freqn >> 10; | |
263 | cp[2] = subs->freqn >> 18; | |
1da177e4 LT |
264 | return 0; |
265 | } | |
266 | ||
267 | /* | |
268 | * prepare urb for high speed capture sync pipe | |
269 | * | |
270 | * fill the length and offset of each urb descriptor. | |
271 | * the fixed 12.13 frequency is passed as 16.16 through the pipe. | |
272 | */ | |
86e07d34 TI |
273 | static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs, |
274 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
275 | struct urb *urb) |
276 | { | |
277 | unsigned char *cp = urb->transfer_buffer; | |
88518275 | 278 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 | 279 | |
1da177e4 | 280 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ |
ca81090a CL |
281 | urb->iso_frame_desc[0].length = 4; |
282 | urb->iso_frame_desc[0].offset = 0; | |
283 | cp[0] = subs->freqn; | |
284 | cp[1] = subs->freqn >> 8; | |
285 | cp[2] = subs->freqn >> 16; | |
286 | cp[3] = subs->freqn >> 24; | |
1da177e4 LT |
287 | return 0; |
288 | } | |
289 | ||
290 | /* | |
291 | * process after capture sync complete | |
292 | * - nothing to do | |
293 | */ | |
86e07d34 TI |
294 | static int retire_capture_sync_urb(struct snd_usb_substream *subs, |
295 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
296 | struct urb *urb) |
297 | { | |
298 | return 0; | |
299 | } | |
300 | ||
301 | /* | |
302 | * prepare urb for capture data pipe | |
303 | * | |
304 | * fill the offset and length of each descriptor. | |
305 | * | |
306 | * we use a temporary buffer to write the captured data. | |
307 | * since the length of written data is determined by host, we cannot | |
308 | * write onto the pcm buffer directly... the data is thus copied | |
309 | * later at complete callback to the global buffer. | |
310 | */ | |
86e07d34 TI |
311 | static int prepare_capture_urb(struct snd_usb_substream *subs, |
312 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
313 | struct urb *urb) |
314 | { | |
315 | int i, offs; | |
88518275 | 316 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 LT |
317 | |
318 | offs = 0; | |
319 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ | |
1da177e4 LT |
320 | for (i = 0; i < ctx->packets; i++) { |
321 | urb->iso_frame_desc[i].offset = offs; | |
322 | urb->iso_frame_desc[i].length = subs->curpacksize; | |
323 | offs += subs->curpacksize; | |
1da177e4 | 324 | } |
1da177e4 | 325 | urb->transfer_buffer_length = offs; |
b263a9bd | 326 | urb->number_of_packets = ctx->packets; |
1da177e4 LT |
327 | return 0; |
328 | } | |
329 | ||
330 | /* | |
331 | * process after capture complete | |
332 | * | |
333 | * copy the data from each desctiptor to the pcm buffer, and | |
334 | * update the current position. | |
335 | */ | |
86e07d34 TI |
336 | static int retire_capture_urb(struct snd_usb_substream *subs, |
337 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
338 | struct urb *urb) |
339 | { | |
340 | unsigned long flags; | |
341 | unsigned char *cp; | |
342 | int i; | |
343 | unsigned int stride, len, oldptr; | |
b263a9bd | 344 | int period_elapsed = 0; |
1da177e4 LT |
345 | |
346 | stride = runtime->frame_bits >> 3; | |
347 | ||
348 | for (i = 0; i < urb->number_of_packets; i++) { | |
349 | cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
350 | if (urb->iso_frame_desc[i].status) { | |
351 | snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status); | |
352 | // continue; | |
353 | } | |
354 | len = urb->iso_frame_desc[i].actual_length / stride; | |
355 | if (! len) | |
356 | continue; | |
357 | /* update the current pointer */ | |
358 | spin_lock_irqsave(&subs->lock, flags); | |
359 | oldptr = subs->hwptr_done; | |
360 | subs->hwptr_done += len; | |
361 | if (subs->hwptr_done >= runtime->buffer_size) | |
362 | subs->hwptr_done -= runtime->buffer_size; | |
363 | subs->transfer_done += len; | |
b263a9bd CL |
364 | if (subs->transfer_done >= runtime->period_size) { |
365 | subs->transfer_done -= runtime->period_size; | |
366 | period_elapsed = 1; | |
367 | } | |
1da177e4 LT |
368 | spin_unlock_irqrestore(&subs->lock, flags); |
369 | /* copy a data chunk */ | |
370 | if (oldptr + len > runtime->buffer_size) { | |
371 | unsigned int cnt = runtime->buffer_size - oldptr; | |
372 | unsigned int blen = cnt * stride; | |
373 | memcpy(runtime->dma_area + oldptr * stride, cp, blen); | |
374 | memcpy(runtime->dma_area, cp + blen, len * stride - blen); | |
375 | } else { | |
376 | memcpy(runtime->dma_area + oldptr * stride, cp, len * stride); | |
377 | } | |
1da177e4 | 378 | } |
b263a9bd CL |
379 | if (period_elapsed) |
380 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1da177e4 LT |
381 | return 0; |
382 | } | |
383 | ||
e4f8e656 CL |
384 | /* |
385 | * Process after capture complete when paused. Nothing to do. | |
386 | */ | |
387 | static int retire_paused_capture_urb(struct snd_usb_substream *subs, | |
388 | struct snd_pcm_runtime *runtime, | |
389 | struct urb *urb) | |
390 | { | |
391 | return 0; | |
392 | } | |
393 | ||
1da177e4 LT |
394 | |
395 | /* | |
396 | * prepare urb for full speed playback sync pipe | |
397 | * | |
398 | * set up the offset and length to receive the current frequency. | |
399 | */ | |
400 | ||
86e07d34 TI |
401 | static int prepare_playback_sync_urb(struct snd_usb_substream *subs, |
402 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
403 | struct urb *urb) |
404 | { | |
88518275 | 405 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 | 406 | |
1da177e4 | 407 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ |
ca81090a CL |
408 | urb->iso_frame_desc[0].length = 3; |
409 | urb->iso_frame_desc[0].offset = 0; | |
1da177e4 LT |
410 | return 0; |
411 | } | |
412 | ||
413 | /* | |
414 | * prepare urb for high speed playback sync pipe | |
415 | * | |
416 | * set up the offset and length to receive the current frequency. | |
417 | */ | |
418 | ||
86e07d34 TI |
419 | static int prepare_playback_sync_urb_hs(struct snd_usb_substream *subs, |
420 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
421 | struct urb *urb) |
422 | { | |
88518275 | 423 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 | 424 | |
1da177e4 | 425 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ |
ca81090a CL |
426 | urb->iso_frame_desc[0].length = 4; |
427 | urb->iso_frame_desc[0].offset = 0; | |
1da177e4 LT |
428 | return 0; |
429 | } | |
430 | ||
431 | /* | |
432 | * process after full speed playback sync complete | |
433 | * | |
434 | * retrieve the current 10.14 frequency from pipe, and set it. | |
435 | * the value is referred in prepare_playback_urb(). | |
436 | */ | |
86e07d34 TI |
437 | static int retire_playback_sync_urb(struct snd_usb_substream *subs, |
438 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
439 | struct urb *urb) |
440 | { | |
ca81090a | 441 | unsigned int f; |
1da177e4 LT |
442 | unsigned long flags; |
443 | ||
ca81090a CL |
444 | if (urb->iso_frame_desc[0].status == 0 && |
445 | urb->iso_frame_desc[0].actual_length == 3) { | |
446 | f = combine_triple((u8*)urb->transfer_buffer) << 2; | |
50cdbf15 CL |
447 | if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { |
448 | spin_lock_irqsave(&subs->lock, flags); | |
449 | subs->freqm = f; | |
450 | spin_unlock_irqrestore(&subs->lock, flags); | |
1da177e4 | 451 | } |
1da177e4 LT |
452 | } |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
457 | /* | |
458 | * process after high speed playback sync complete | |
459 | * | |
460 | * retrieve the current 12.13 frequency from pipe, and set it. | |
461 | * the value is referred in prepare_playback_urb(). | |
462 | */ | |
86e07d34 TI |
463 | static int retire_playback_sync_urb_hs(struct snd_usb_substream *subs, |
464 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
465 | struct urb *urb) |
466 | { | |
ca81090a | 467 | unsigned int f; |
1da177e4 LT |
468 | unsigned long flags; |
469 | ||
ca81090a CL |
470 | if (urb->iso_frame_desc[0].status == 0 && |
471 | urb->iso_frame_desc[0].actual_length == 4) { | |
472 | f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff; | |
50cdbf15 CL |
473 | if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { |
474 | spin_lock_irqsave(&subs->lock, flags); | |
475 | subs->freqm = f; | |
476 | spin_unlock_irqrestore(&subs->lock, flags); | |
477 | } | |
1da177e4 LT |
478 | } |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
d513202e CL |
483 | /* |
484 | * process after E-Mu 0202/0404 high speed playback sync complete | |
485 | * | |
486 | * These devices return the number of samples per packet instead of the number | |
487 | * of samples per microframe. | |
488 | */ | |
489 | static int retire_playback_sync_urb_hs_emu(struct snd_usb_substream *subs, | |
490 | struct snd_pcm_runtime *runtime, | |
491 | struct urb *urb) | |
492 | { | |
493 | unsigned int f; | |
494 | unsigned long flags; | |
495 | ||
496 | if (urb->iso_frame_desc[0].status == 0 && | |
497 | urb->iso_frame_desc[0].actual_length == 4) { | |
498 | f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff; | |
499 | f >>= subs->datainterval; | |
500 | if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { | |
501 | spin_lock_irqsave(&subs->lock, flags); | |
502 | subs->freqm = f; | |
503 | spin_unlock_irqrestore(&subs->lock, flags); | |
504 | } | |
505 | } | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
9568f461 CL |
510 | /* determine the number of frames in the next packet */ |
511 | static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs) | |
512 | { | |
513 | if (subs->fill_max) | |
514 | return subs->maxframesize; | |
515 | else { | |
516 | subs->phase = (subs->phase & 0xffff) | |
517 | + (subs->freqm << subs->datainterval); | |
518 | return min(subs->phase >> 16, subs->maxframesize); | |
519 | } | |
520 | } | |
521 | ||
b55bbf06 | 522 | /* |
e4f8e656 | 523 | * Prepare urb for streaming before playback starts or when paused. |
b55bbf06 | 524 | * |
e4f8e656 | 525 | * We don't have any data, so we send a frame of silence. |
b55bbf06 | 526 | */ |
e4f8e656 CL |
527 | static int prepare_nodata_playback_urb(struct snd_usb_substream *subs, |
528 | struct snd_pcm_runtime *runtime, | |
529 | struct urb *urb) | |
b55bbf06 | 530 | { |
4b284928 | 531 | unsigned int i, offs, counts; |
86e07d34 | 532 | struct snd_urb_ctx *ctx = urb->context; |
4b284928 | 533 | int stride = runtime->frame_bits >> 3; |
b55bbf06 | 534 | |
4b284928 | 535 | offs = 0; |
b55bbf06 CL |
536 | urb->dev = ctx->subs->dev; |
537 | urb->number_of_packets = subs->packs_per_ms; | |
538 | for (i = 0; i < subs->packs_per_ms; ++i) { | |
9568f461 | 539 | counts = snd_usb_audio_next_packet_size(subs); |
4b284928 CL |
540 | urb->iso_frame_desc[i].offset = offs * stride; |
541 | urb->iso_frame_desc[i].length = counts * stride; | |
542 | offs += counts; | |
b55bbf06 | 543 | } |
4b284928 CL |
544 | urb->transfer_buffer_length = offs * stride; |
545 | memset(urb->transfer_buffer, | |
546 | subs->cur_audiofmt->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0, | |
547 | offs * stride); | |
b55bbf06 CL |
548 | return 0; |
549 | } | |
550 | ||
1da177e4 LT |
551 | /* |
552 | * prepare urb for playback data pipe | |
553 | * | |
7efd8bc8 CL |
554 | * Since a URB can handle only a single linear buffer, we must use double |
555 | * buffering when the data to be transferred overflows the buffer boundary. | |
556 | * To avoid inconsistencies when updating hwptr_done, we use double buffering | |
557 | * for all URBs. | |
1da177e4 | 558 | */ |
86e07d34 TI |
559 | static int prepare_playback_urb(struct snd_usb_substream *subs, |
560 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
561 | struct urb *urb) |
562 | { | |
563 | int i, stride, offs; | |
564 | unsigned int counts; | |
565 | unsigned long flags; | |
7efd8bc8 | 566 | int period_elapsed = 0; |
88518275 | 567 | struct snd_urb_ctx *ctx = urb->context; |
1da177e4 LT |
568 | |
569 | stride = runtime->frame_bits >> 3; | |
570 | ||
571 | offs = 0; | |
572 | urb->dev = ctx->subs->dev; /* we need to set this at each time */ | |
573 | urb->number_of_packets = 0; | |
574 | spin_lock_irqsave(&subs->lock, flags); | |
575 | for (i = 0; i < ctx->packets; i++) { | |
9568f461 | 576 | counts = snd_usb_audio_next_packet_size(subs); |
1da177e4 LT |
577 | /* set up descriptor */ |
578 | urb->iso_frame_desc[i].offset = offs * stride; | |
579 | urb->iso_frame_desc[i].length = counts * stride; | |
580 | offs += counts; | |
581 | urb->number_of_packets++; | |
7efd8bc8 CL |
582 | subs->transfer_done += counts; |
583 | if (subs->transfer_done >= runtime->period_size) { | |
584 | subs->transfer_done -= runtime->period_size; | |
585 | period_elapsed = 1; | |
1da177e4 | 586 | if (subs->fmt_type == USB_FORMAT_TYPE_II) { |
7efd8bc8 CL |
587 | if (subs->transfer_done > 0) { |
588 | /* FIXME: fill-max mode is not | |
589 | * supported yet */ | |
590 | offs -= subs->transfer_done; | |
591 | counts -= subs->transfer_done; | |
592 | urb->iso_frame_desc[i].length = | |
593 | counts * stride; | |
594 | subs->transfer_done = 0; | |
1da177e4 LT |
595 | } |
596 | i++; | |
597 | if (i < ctx->packets) { | |
598 | /* add a transfer delimiter */ | |
7efd8bc8 CL |
599 | urb->iso_frame_desc[i].offset = |
600 | offs * stride; | |
1da177e4 LT |
601 | urb->iso_frame_desc[i].length = 0; |
602 | urb->number_of_packets++; | |
603 | } | |
9624ea81 | 604 | break; |
1da177e4 | 605 | } |
1da177e4 | 606 | } |
9624ea81 CL |
607 | /* finish at the frame boundary at/after the period boundary */ |
608 | if (period_elapsed && | |
609 | (i & (subs->packs_per_ms - 1)) == subs->packs_per_ms - 1) | |
610 | break; | |
1da177e4 | 611 | } |
7efd8bc8 CL |
612 | if (subs->hwptr_done + offs > runtime->buffer_size) { |
613 | /* err, the transferred area goes over buffer boundary. */ | |
614 | unsigned int len = runtime->buffer_size - subs->hwptr_done; | |
615 | memcpy(urb->transfer_buffer, | |
616 | runtime->dma_area + subs->hwptr_done * stride, | |
617 | len * stride); | |
618 | memcpy(urb->transfer_buffer + len * stride, | |
619 | runtime->dma_area, | |
620 | (offs - len) * stride); | |
1da177e4 | 621 | } else { |
7efd8bc8 CL |
622 | memcpy(urb->transfer_buffer, |
623 | runtime->dma_area + subs->hwptr_done * stride, | |
624 | offs * stride); | |
1da177e4 | 625 | } |
7efd8bc8 CL |
626 | subs->hwptr_done += offs; |
627 | if (subs->hwptr_done >= runtime->buffer_size) | |
628 | subs->hwptr_done -= runtime->buffer_size; | |
1da177e4 LT |
629 | spin_unlock_irqrestore(&subs->lock, flags); |
630 | urb->transfer_buffer_length = offs * stride; | |
b55bbf06 CL |
631 | if (period_elapsed) |
632 | snd_pcm_period_elapsed(subs->pcm_substream); | |
1da177e4 LT |
633 | return 0; |
634 | } | |
635 | ||
636 | /* | |
637 | * process after playback data complete | |
7efd8bc8 | 638 | * - nothing to do |
1da177e4 | 639 | */ |
86e07d34 TI |
640 | static int retire_playback_urb(struct snd_usb_substream *subs, |
641 | struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
642 | struct urb *urb) |
643 | { | |
1da177e4 LT |
644 | return 0; |
645 | } | |
646 | ||
647 | ||
648 | /* | |
649 | */ | |
650 | static struct snd_urb_ops audio_urb_ops[2] = { | |
651 | { | |
e4f8e656 | 652 | .prepare = prepare_nodata_playback_urb, |
1da177e4 LT |
653 | .retire = retire_playback_urb, |
654 | .prepare_sync = prepare_playback_sync_urb, | |
655 | .retire_sync = retire_playback_sync_urb, | |
656 | }, | |
657 | { | |
658 | .prepare = prepare_capture_urb, | |
659 | .retire = retire_capture_urb, | |
660 | .prepare_sync = prepare_capture_sync_urb, | |
661 | .retire_sync = retire_capture_sync_urb, | |
662 | }, | |
663 | }; | |
664 | ||
665 | static struct snd_urb_ops audio_urb_ops_high_speed[2] = { | |
666 | { | |
e4f8e656 | 667 | .prepare = prepare_nodata_playback_urb, |
1da177e4 LT |
668 | .retire = retire_playback_urb, |
669 | .prepare_sync = prepare_playback_sync_urb_hs, | |
670 | .retire_sync = retire_playback_sync_urb_hs, | |
671 | }, | |
672 | { | |
673 | .prepare = prepare_capture_urb, | |
674 | .retire = retire_capture_urb, | |
675 | .prepare_sync = prepare_capture_sync_urb_hs, | |
676 | .retire_sync = retire_capture_sync_urb, | |
677 | }, | |
678 | }; | |
679 | ||
680 | /* | |
681 | * complete callback from data urb | |
682 | */ | |
7d12e780 | 683 | static void snd_complete_urb(struct urb *urb) |
1da177e4 | 684 | { |
88518275 | 685 | struct snd_urb_ctx *ctx = urb->context; |
86e07d34 TI |
686 | struct snd_usb_substream *subs = ctx->subs; |
687 | struct snd_pcm_substream *substream = ctx->subs->pcm_substream; | |
1da177e4 LT |
688 | int err = 0; |
689 | ||
690 | if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) || | |
07f51a72 | 691 | !subs->running || /* can be stopped during retire callback */ |
1da177e4 LT |
692 | (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 || |
693 | (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { | |
694 | clear_bit(ctx->index, &subs->active_mask); | |
695 | if (err < 0) { | |
696 | snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err); | |
697 | snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
698 | } | |
699 | } | |
700 | } | |
701 | ||
702 | ||
703 | /* | |
704 | * complete callback from sync urb | |
705 | */ | |
7d12e780 | 706 | static void snd_complete_sync_urb(struct urb *urb) |
1da177e4 | 707 | { |
88518275 | 708 | struct snd_urb_ctx *ctx = urb->context; |
86e07d34 TI |
709 | struct snd_usb_substream *subs = ctx->subs; |
710 | struct snd_pcm_substream *substream = ctx->subs->pcm_substream; | |
1da177e4 LT |
711 | int err = 0; |
712 | ||
713 | if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) || | |
07f51a72 | 714 | !subs->running || /* can be stopped during retire callback */ |
1da177e4 LT |
715 | (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 || |
716 | (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { | |
717 | clear_bit(ctx->index + 16, &subs->active_mask); | |
718 | if (err < 0) { | |
719 | snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err); | |
720 | snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
721 | } | |
722 | } | |
723 | } | |
724 | ||
725 | ||
6207e51b | 726 | /* get the physical page pointer at the given offset */ |
86e07d34 | 727 | static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs, |
6207e51b CL |
728 | unsigned long offset) |
729 | { | |
730 | void *pageptr = subs->runtime->dma_area + offset; | |
731 | return vmalloc_to_page(pageptr); | |
732 | } | |
733 | ||
734 | /* allocate virtual buffer; may be called more than once */ | |
86e07d34 | 735 | static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size) |
6207e51b | 736 | { |
86e07d34 | 737 | struct snd_pcm_runtime *runtime = subs->runtime; |
6207e51b CL |
738 | if (runtime->dma_area) { |
739 | if (runtime->dma_bytes >= size) | |
740 | return 0; /* already large enough */ | |
b1d5776d | 741 | vfree(runtime->dma_area); |
6207e51b | 742 | } |
b1d5776d | 743 | runtime->dma_area = vmalloc(size); |
07f51a72 | 744 | if (!runtime->dma_area) |
6207e51b CL |
745 | return -ENOMEM; |
746 | runtime->dma_bytes = size; | |
747 | return 0; | |
748 | } | |
749 | ||
750 | /* free virtual buffer; may be called more than once */ | |
86e07d34 | 751 | static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs) |
6207e51b | 752 | { |
86e07d34 | 753 | struct snd_pcm_runtime *runtime = subs->runtime; |
9c4be3d3 JJ |
754 | |
755 | vfree(runtime->dma_area); | |
756 | runtime->dma_area = NULL; | |
6207e51b CL |
757 | return 0; |
758 | } | |
759 | ||
760 | ||
1da177e4 LT |
761 | /* |
762 | * unlink active urbs. | |
763 | */ | |
86e07d34 | 764 | static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep) |
1da177e4 LT |
765 | { |
766 | unsigned int i; | |
767 | int async; | |
768 | ||
769 | subs->running = 0; | |
770 | ||
771 | if (!force && subs->stream->chip->shutdown) /* to be sure... */ | |
772 | return -EBADFD; | |
773 | ||
774 | async = !can_sleep && async_unlink; | |
775 | ||
07f51a72 | 776 | if (!async && in_interrupt()) |
1da177e4 LT |
777 | return 0; |
778 | ||
779 | for (i = 0; i < subs->nurbs; i++) { | |
780 | if (test_bit(i, &subs->active_mask)) { | |
07f51a72 | 781 | if (!test_and_set_bit(i, &subs->unlink_mask)) { |
1da177e4 | 782 | struct urb *u = subs->dataurb[i].urb; |
b375a049 | 783 | if (async) |
1da177e4 | 784 | usb_unlink_urb(u); |
b375a049 | 785 | else |
1da177e4 LT |
786 | usb_kill_urb(u); |
787 | } | |
788 | } | |
789 | } | |
790 | if (subs->syncpipe) { | |
791 | for (i = 0; i < SYNC_URBS; i++) { | |
792 | if (test_bit(i+16, &subs->active_mask)) { | |
07f51a72 | 793 | if (!test_and_set_bit(i+16, &subs->unlink_mask)) { |
1da177e4 | 794 | struct urb *u = subs->syncurb[i].urb; |
b375a049 | 795 | if (async) |
1da177e4 | 796 | usb_unlink_urb(u); |
b375a049 | 797 | else |
1da177e4 LT |
798 | usb_kill_urb(u); |
799 | } | |
800 | } | |
801 | } | |
802 | } | |
803 | return 0; | |
804 | } | |
805 | ||
806 | ||
32e19e88 CL |
807 | static const char *usb_error_string(int err) |
808 | { | |
809 | switch (err) { | |
810 | case -ENODEV: | |
811 | return "no device"; | |
812 | case -ENOENT: | |
813 | return "endpoint not enabled"; | |
814 | case -EPIPE: | |
815 | return "endpoint stalled"; | |
816 | case -ENOSPC: | |
817 | return "not enough bandwidth"; | |
818 | case -ESHUTDOWN: | |
819 | return "device disabled"; | |
820 | case -EHOSTUNREACH: | |
821 | return "device suspended"; | |
822 | case -EINVAL: | |
823 | case -EAGAIN: | |
824 | case -EFBIG: | |
825 | case -EMSGSIZE: | |
826 | return "internal error"; | |
827 | default: | |
828 | return "unknown error"; | |
829 | } | |
830 | } | |
831 | ||
1da177e4 LT |
832 | /* |
833 | * set up and start data/sync urbs | |
834 | */ | |
86e07d34 | 835 | static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime) |
1da177e4 LT |
836 | { |
837 | unsigned int i; | |
838 | int err; | |
839 | ||
840 | if (subs->stream->chip->shutdown) | |
841 | return -EBADFD; | |
842 | ||
843 | for (i = 0; i < subs->nurbs; i++) { | |
844 | snd_assert(subs->dataurb[i].urb, return -EINVAL); | |
845 | if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) { | |
846 | snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i); | |
847 | goto __error; | |
848 | } | |
849 | } | |
850 | if (subs->syncpipe) { | |
851 | for (i = 0; i < SYNC_URBS; i++) { | |
852 | snd_assert(subs->syncurb[i].urb, return -EINVAL); | |
853 | if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) { | |
854 | snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i); | |
855 | goto __error; | |
856 | } | |
857 | } | |
858 | } | |
859 | ||
860 | subs->active_mask = 0; | |
861 | subs->unlink_mask = 0; | |
862 | subs->running = 1; | |
863 | for (i = 0; i < subs->nurbs; i++) { | |
32e19e88 CL |
864 | err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC); |
865 | if (err < 0) { | |
866 | snd_printk(KERN_ERR "cannot submit datapipe " | |
867 | "for urb %d, error %d: %s\n", | |
868 | i, err, usb_error_string(err)); | |
1da177e4 LT |
869 | goto __error; |
870 | } | |
871 | set_bit(i, &subs->active_mask); | |
872 | } | |
873 | if (subs->syncpipe) { | |
874 | for (i = 0; i < SYNC_URBS; i++) { | |
32e19e88 CL |
875 | err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC); |
876 | if (err < 0) { | |
877 | snd_printk(KERN_ERR "cannot submit syncpipe " | |
878 | "for urb %d, error %d: %s\n", | |
879 | i, err, usb_error_string(err)); | |
1da177e4 LT |
880 | goto __error; |
881 | } | |
882 | set_bit(i + 16, &subs->active_mask); | |
883 | } | |
884 | } | |
885 | return 0; | |
886 | ||
887 | __error: | |
888 | // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN); | |
889 | deactivate_urbs(subs, 0, 0); | |
890 | return -EPIPE; | |
891 | } | |
892 | ||
893 | ||
894 | /* | |
895 | * wait until all urbs are processed. | |
896 | */ | |
86e07d34 | 897 | static int wait_clear_urbs(struct snd_usb_substream *subs) |
1da177e4 | 898 | { |
b27c187f | 899 | unsigned long end_time = jiffies + msecs_to_jiffies(1000); |
1da177e4 LT |
900 | unsigned int i; |
901 | int alive; | |
902 | ||
903 | do { | |
904 | alive = 0; | |
905 | for (i = 0; i < subs->nurbs; i++) { | |
906 | if (test_bit(i, &subs->active_mask)) | |
907 | alive++; | |
908 | } | |
909 | if (subs->syncpipe) { | |
910 | for (i = 0; i < SYNC_URBS; i++) { | |
911 | if (test_bit(i + 16, &subs->active_mask)) | |
912 | alive++; | |
913 | } | |
914 | } | |
915 | if (! alive) | |
916 | break; | |
8433a509 | 917 | schedule_timeout_uninterruptible(1); |
b27c187f | 918 | } while (time_before(jiffies, end_time)); |
1da177e4 LT |
919 | if (alive) |
920 | snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive); | |
921 | return 0; | |
922 | } | |
923 | ||
924 | ||
925 | /* | |
926 | * return the current pcm pointer. just return the hwptr_done value. | |
927 | */ | |
86e07d34 | 928 | static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) |
1da177e4 | 929 | { |
86e07d34 | 930 | struct snd_usb_substream *subs; |
daa150ef CL |
931 | snd_pcm_uframes_t hwptr_done; |
932 | ||
86e07d34 | 933 | subs = (struct snd_usb_substream *)substream->runtime->private_data; |
daa150ef CL |
934 | spin_lock(&subs->lock); |
935 | hwptr_done = subs->hwptr_done; | |
936 | spin_unlock(&subs->lock); | |
937 | return hwptr_done; | |
1da177e4 LT |
938 | } |
939 | ||
940 | ||
941 | /* | |
b55bbf06 | 942 | * start/stop playback substream |
1da177e4 | 943 | */ |
86e07d34 | 944 | static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream *substream, |
b55bbf06 | 945 | int cmd) |
1da177e4 | 946 | { |
86e07d34 | 947 | struct snd_usb_substream *subs = substream->runtime->private_data; |
b55bbf06 CL |
948 | |
949 | switch (cmd) { | |
950 | case SNDRV_PCM_TRIGGER_START: | |
e4f8e656 | 951 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
b55bbf06 CL |
952 | subs->ops.prepare = prepare_playback_urb; |
953 | return 0; | |
954 | case SNDRV_PCM_TRIGGER_STOP: | |
955 | return deactivate_urbs(subs, 0, 0); | |
e4f8e656 CL |
956 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
957 | subs->ops.prepare = prepare_nodata_playback_urb; | |
958 | return 0; | |
b55bbf06 CL |
959 | default: |
960 | return -EINVAL; | |
961 | } | |
962 | } | |
963 | ||
964 | /* | |
965 | * start/stop capture substream | |
966 | */ | |
86e07d34 | 967 | static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream *substream, |
b55bbf06 CL |
968 | int cmd) |
969 | { | |
86e07d34 | 970 | struct snd_usb_substream *subs = substream->runtime->private_data; |
1da177e4 LT |
971 | |
972 | switch (cmd) { | |
973 | case SNDRV_PCM_TRIGGER_START: | |
e4f8e656 | 974 | subs->ops.retire = retire_capture_urb; |
b55bbf06 | 975 | return start_urbs(subs, substream->runtime); |
1da177e4 | 976 | case SNDRV_PCM_TRIGGER_STOP: |
b55bbf06 | 977 | return deactivate_urbs(subs, 0, 0); |
e4f8e656 CL |
978 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
979 | subs->ops.retire = retire_paused_capture_urb; | |
980 | return 0; | |
981 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
982 | subs->ops.retire = retire_capture_urb; | |
983 | return 0; | |
1da177e4 | 984 | default: |
b55bbf06 | 985 | return -EINVAL; |
1da177e4 | 986 | } |
1da177e4 LT |
987 | } |
988 | ||
989 | ||
990 | /* | |
991 | * release a urb data | |
992 | */ | |
86e07d34 | 993 | static void release_urb_ctx(struct snd_urb_ctx *u) |
1da177e4 LT |
994 | { |
995 | if (u->urb) { | |
55851f73 CL |
996 | if (u->buffer_size) |
997 | usb_buffer_free(u->subs->dev, u->buffer_size, | |
998 | u->urb->transfer_buffer, | |
999 | u->urb->transfer_dma); | |
1da177e4 LT |
1000 | usb_free_urb(u->urb); |
1001 | u->urb = NULL; | |
1002 | } | |
1da177e4 LT |
1003 | } |
1004 | ||
1005 | /* | |
1006 | * release a substream | |
1007 | */ | |
86e07d34 | 1008 | static void release_substream_urbs(struct snd_usb_substream *subs, int force) |
1da177e4 LT |
1009 | { |
1010 | int i; | |
1011 | ||
1012 | /* stop urbs (to be sure) */ | |
1013 | deactivate_urbs(subs, force, 1); | |
1014 | wait_clear_urbs(subs); | |
1015 | ||
1016 | for (i = 0; i < MAX_URBS; i++) | |
1017 | release_urb_ctx(&subs->dataurb[i]); | |
1018 | for (i = 0; i < SYNC_URBS; i++) | |
1019 | release_urb_ctx(&subs->syncurb[i]); | |
55851f73 CL |
1020 | usb_buffer_free(subs->dev, SYNC_URBS * 4, |
1021 | subs->syncbuf, subs->sync_dma); | |
1022 | subs->syncbuf = NULL; | |
1da177e4 LT |
1023 | subs->nurbs = 0; |
1024 | } | |
1025 | ||
1026 | /* | |
1027 | * initialize a substream for plaback/capture | |
1028 | */ | |
86e07d34 | 1029 | static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int period_bytes, |
1da177e4 LT |
1030 | unsigned int rate, unsigned int frame_bits) |
1031 | { | |
1032 | unsigned int maxsize, n, i; | |
1033 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
a93bf990 | 1034 | unsigned int npacks[MAX_URBS], urb_packs, total_packs, packs_per_ms; |
1da177e4 LT |
1035 | |
1036 | /* calculate the frequency in 16.16 format */ | |
1037 | if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) | |
1038 | subs->freqn = get_usb_full_speed_rate(rate); | |
1039 | else | |
1040 | subs->freqn = get_usb_high_speed_rate(rate); | |
1041 | subs->freqm = subs->freqn; | |
573567e0 CL |
1042 | /* calculate max. frequency */ |
1043 | if (subs->maxpacksize) { | |
1044 | /* whatever fits into a max. size packet */ | |
1da177e4 | 1045 | maxsize = subs->maxpacksize; |
573567e0 CL |
1046 | subs->freqmax = (maxsize / (frame_bits >> 3)) |
1047 | << (16 - subs->datainterval); | |
1048 | } else { | |
1049 | /* no max. packet size: just take 25% higher than nominal */ | |
1050 | subs->freqmax = subs->freqn + (subs->freqn >> 2); | |
1051 | maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3)) | |
1052 | >> (16 - subs->datainterval); | |
1da177e4 | 1053 | } |
573567e0 | 1054 | subs->phase = 0; |
1da177e4 LT |
1055 | |
1056 | if (subs->fill_max) | |
1057 | subs->curpacksize = subs->maxpacksize; | |
1058 | else | |
1059 | subs->curpacksize = maxsize; | |
1060 | ||
a93bf990 CL |
1061 | if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) |
1062 | packs_per_ms = 8 >> subs->datainterval; | |
1063 | else | |
1064 | packs_per_ms = 1; | |
9624ea81 | 1065 | subs->packs_per_ms = packs_per_ms; |
a93bf990 | 1066 | |
71d848ca | 1067 | if (is_playback) { |
1da177e4 | 1068 | urb_packs = nrpacks; |
71d848ca CL |
1069 | urb_packs = max(urb_packs, (unsigned int)MIN_PACKS_URB); |
1070 | urb_packs = min(urb_packs, (unsigned int)MAX_PACKS); | |
1071 | } else | |
15a24c07 | 1072 | urb_packs = 1; |
a93bf990 | 1073 | urb_packs *= packs_per_ms; |
1da177e4 | 1074 | |
1da177e4 | 1075 | /* decide how many packets to be used */ |
15a24c07 | 1076 | if (is_playback) { |
d6db392e CL |
1077 | unsigned int minsize; |
1078 | /* determine how small a packet can be */ | |
1079 | minsize = (subs->freqn >> (16 - subs->datainterval)) | |
1080 | * (frame_bits >> 3); | |
7efd8bc8 | 1081 | /* with sync from device, assume it can be 12% lower */ |
d6db392e | 1082 | if (subs->syncpipe) |
7efd8bc8 | 1083 | minsize -= minsize >> 3; |
d6db392e CL |
1084 | minsize = max(minsize, 1u); |
1085 | total_packs = (period_bytes + minsize - 1) / minsize; | |
a93bf990 CL |
1086 | /* round up to multiple of packs_per_ms */ |
1087 | total_packs = (total_packs + packs_per_ms - 1) | |
1088 | & ~(packs_per_ms - 1); | |
1089 | /* we need at least two URBs for queueing */ | |
1090 | if (total_packs < 2 * MIN_PACKS_URB * packs_per_ms) | |
1091 | total_packs = 2 * MIN_PACKS_URB * packs_per_ms; | |
15a24c07 CL |
1092 | } else { |
1093 | total_packs = MAX_URBS * urb_packs; | |
1094 | } | |
1da177e4 LT |
1095 | subs->nurbs = (total_packs + urb_packs - 1) / urb_packs; |
1096 | if (subs->nurbs > MAX_URBS) { | |
1097 | /* too much... */ | |
1098 | subs->nurbs = MAX_URBS; | |
1099 | total_packs = MAX_URBS * urb_packs; | |
1100 | } | |
1101 | n = total_packs; | |
1102 | for (i = 0; i < subs->nurbs; i++) { | |
1103 | npacks[i] = n > urb_packs ? urb_packs : n; | |
1104 | n -= urb_packs; | |
1105 | } | |
1106 | if (subs->nurbs <= 1) { | |
1107 | /* too little - we need at least two packets | |
1108 | * to ensure contiguous playback/capture | |
1109 | */ | |
1110 | subs->nurbs = 2; | |
1111 | npacks[0] = (total_packs + 1) / 2; | |
1112 | npacks[1] = total_packs - npacks[0]; | |
a93bf990 | 1113 | } else if (npacks[subs->nurbs-1] < MIN_PACKS_URB * packs_per_ms) { |
1da177e4 LT |
1114 | /* the last packet is too small.. */ |
1115 | if (subs->nurbs > 2) { | |
1116 | /* merge to the first one */ | |
1117 | npacks[0] += npacks[subs->nurbs - 1]; | |
1118 | subs->nurbs--; | |
1119 | } else { | |
1120 | /* divide to two */ | |
1121 | subs->nurbs = 2; | |
1122 | npacks[0] = (total_packs + 1) / 2; | |
1123 | npacks[1] = total_packs - npacks[0]; | |
1124 | } | |
1125 | } | |
1126 | ||
1127 | /* allocate and initialize data urbs */ | |
1128 | for (i = 0; i < subs->nurbs; i++) { | |
86e07d34 | 1129 | struct snd_urb_ctx *u = &subs->dataurb[i]; |
1da177e4 LT |
1130 | u->index = i; |
1131 | u->subs = subs; | |
1da177e4 | 1132 | u->packets = npacks[i]; |
55851f73 | 1133 | u->buffer_size = maxsize * u->packets; |
1da177e4 LT |
1134 | if (subs->fmt_type == USB_FORMAT_TYPE_II) |
1135 | u->packets++; /* for transfer delimiter */ | |
1da177e4 | 1136 | u->urb = usb_alloc_urb(u->packets, GFP_KERNEL); |
07f51a72 | 1137 | if (!u->urb) |
55851f73 CL |
1138 | goto out_of_memory; |
1139 | u->urb->transfer_buffer = | |
1140 | usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL, | |
1141 | &u->urb->transfer_dma); | |
07f51a72 | 1142 | if (!u->urb->transfer_buffer) |
55851f73 | 1143 | goto out_of_memory; |
1da177e4 | 1144 | u->urb->pipe = subs->datapipe; |
55851f73 | 1145 | u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; |
573567e0 | 1146 | u->urb->interval = 1 << subs->datainterval; |
1da177e4 | 1147 | u->urb->context = u; |
3527a008 | 1148 | u->urb->complete = snd_complete_urb; |
1da177e4 LT |
1149 | } |
1150 | ||
1151 | if (subs->syncpipe) { | |
1152 | /* allocate and initialize sync urbs */ | |
55851f73 CL |
1153 | subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4, |
1154 | GFP_KERNEL, &subs->sync_dma); | |
07f51a72 | 1155 | if (!subs->syncbuf) |
55851f73 | 1156 | goto out_of_memory; |
1da177e4 | 1157 | for (i = 0; i < SYNC_URBS; i++) { |
86e07d34 | 1158 | struct snd_urb_ctx *u = &subs->syncurb[i]; |
1da177e4 LT |
1159 | u->index = i; |
1160 | u->subs = subs; | |
ca81090a CL |
1161 | u->packets = 1; |
1162 | u->urb = usb_alloc_urb(1, GFP_KERNEL); | |
07f51a72 | 1163 | if (!u->urb) |
55851f73 | 1164 | goto out_of_memory; |
ca81090a | 1165 | u->urb->transfer_buffer = subs->syncbuf + i * 4; |
55851f73 | 1166 | u->urb->transfer_dma = subs->sync_dma + i * 4; |
ca81090a | 1167 | u->urb->transfer_buffer_length = 4; |
1da177e4 | 1168 | u->urb->pipe = subs->syncpipe; |
55851f73 CL |
1169 | u->urb->transfer_flags = URB_ISO_ASAP | |
1170 | URB_NO_TRANSFER_DMA_MAP; | |
ca81090a | 1171 | u->urb->number_of_packets = 1; |
1149a64f | 1172 | u->urb->interval = 1 << subs->syncinterval; |
1da177e4 | 1173 | u->urb->context = u; |
3527a008 | 1174 | u->urb->complete = snd_complete_sync_urb; |
1da177e4 LT |
1175 | } |
1176 | } | |
1177 | return 0; | |
55851f73 CL |
1178 | |
1179 | out_of_memory: | |
1180 | release_substream_urbs(subs, 0); | |
1181 | return -ENOMEM; | |
1da177e4 LT |
1182 | } |
1183 | ||
1184 | ||
1185 | /* | |
1186 | * find a matching audio format | |
1187 | */ | |
86e07d34 | 1188 | static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format, |
1da177e4 LT |
1189 | unsigned int rate, unsigned int channels) |
1190 | { | |
1191 | struct list_head *p; | |
1192 | struct audioformat *found = NULL; | |
1193 | int cur_attr = 0, attr; | |
1194 | ||
1195 | list_for_each(p, &subs->fmt_list) { | |
1196 | struct audioformat *fp; | |
1197 | fp = list_entry(p, struct audioformat, list); | |
1198 | if (fp->format != format || fp->channels != channels) | |
1199 | continue; | |
1200 | if (rate < fp->rate_min || rate > fp->rate_max) | |
1201 | continue; | |
1202 | if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { | |
1203 | unsigned int i; | |
1204 | for (i = 0; i < fp->nr_rates; i++) | |
1205 | if (fp->rate_table[i] == rate) | |
1206 | break; | |
1207 | if (i >= fp->nr_rates) | |
1208 | continue; | |
1209 | } | |
1210 | attr = fp->ep_attr & EP_ATTR_MASK; | |
1211 | if (! found) { | |
1212 | found = fp; | |
1213 | cur_attr = attr; | |
1214 | continue; | |
1215 | } | |
1216 | /* avoid async out and adaptive in if the other method | |
1217 | * supports the same format. | |
1218 | * this is a workaround for the case like | |
1219 | * M-audio audiophile USB. | |
1220 | */ | |
1221 | if (attr != cur_attr) { | |
1222 | if ((attr == EP_ATTR_ASYNC && | |
1223 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
1224 | (attr == EP_ATTR_ADAPTIVE && | |
1225 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) | |
1226 | continue; | |
1227 | if ((cur_attr == EP_ATTR_ASYNC && | |
1228 | subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || | |
1229 | (cur_attr == EP_ATTR_ADAPTIVE && | |
1230 | subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { | |
1231 | found = fp; | |
1232 | cur_attr = attr; | |
1233 | continue; | |
1234 | } | |
1235 | } | |
1236 | /* find the format with the largest max. packet size */ | |
1237 | if (fp->maxpacksize > found->maxpacksize) { | |
1238 | found = fp; | |
1239 | cur_attr = attr; | |
1240 | } | |
1241 | } | |
1242 | return found; | |
1243 | } | |
1244 | ||
1245 | ||
1246 | /* | |
1247 | * initialize the picth control and sample rate | |
1248 | */ | |
1249 | static int init_usb_pitch(struct usb_device *dev, int iface, | |
1250 | struct usb_host_interface *alts, | |
1251 | struct audioformat *fmt) | |
1252 | { | |
1253 | unsigned int ep; | |
1254 | unsigned char data[1]; | |
1255 | int err; | |
1256 | ||
1257 | ep = get_endpoint(alts, 0)->bEndpointAddress; | |
1258 | /* if endpoint has pitch control, enable it */ | |
1259 | if (fmt->attributes & EP_CS_ATTR_PITCH_CONTROL) { | |
1260 | data[0] = 1; | |
1261 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, | |
1262 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, | |
1263 | PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) { | |
1264 | snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n", | |
1265 | dev->devnum, iface, ep); | |
1266 | return err; | |
1267 | } | |
1268 | } | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | static int init_usb_sample_rate(struct usb_device *dev, int iface, | |
1273 | struct usb_host_interface *alts, | |
1274 | struct audioformat *fmt, int rate) | |
1275 | { | |
1276 | unsigned int ep; | |
1277 | unsigned char data[3]; | |
1278 | int err; | |
1279 | ||
1280 | ep = get_endpoint(alts, 0)->bEndpointAddress; | |
1281 | /* if endpoint has sampling rate control, set it */ | |
1282 | if (fmt->attributes & EP_CS_ATTR_SAMPLE_RATE) { | |
1283 | int crate; | |
1284 | data[0] = rate; | |
1285 | data[1] = rate >> 8; | |
1286 | data[2] = rate >> 16; | |
1287 | if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, | |
1288 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, | |
1289 | SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) { | |
1290 | snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep 0x%x\n", | |
1291 | dev->devnum, iface, fmt->altsetting, rate, ep); | |
1292 | return err; | |
1293 | } | |
1294 | if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, | |
1295 | USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN, | |
1296 | SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) { | |
1297 | snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep 0x%x\n", | |
1298 | dev->devnum, iface, fmt->altsetting, ep); | |
1299 | return 0; /* some devices don't support reading */ | |
1300 | } | |
1301 | crate = data[0] | (data[1] << 8) | (data[2] << 16); | |
1302 | if (crate != rate) { | |
1303 | snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate); | |
1304 | // runtime->rate = crate; | |
1305 | } | |
1306 | } | |
1307 | return 0; | |
1308 | } | |
1309 | ||
1310 | /* | |
1311 | * find a matching format and set up the interface | |
1312 | */ | |
86e07d34 | 1313 | static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) |
1da177e4 LT |
1314 | { |
1315 | struct usb_device *dev = subs->dev; | |
1316 | struct usb_host_interface *alts; | |
1317 | struct usb_interface_descriptor *altsd; | |
1318 | struct usb_interface *iface; | |
1319 | unsigned int ep, attr; | |
1320 | int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; | |
1321 | int err; | |
1322 | ||
1323 | iface = usb_ifnum_to_if(dev, fmt->iface); | |
1324 | snd_assert(iface, return -EINVAL); | |
1325 | alts = &iface->altsetting[fmt->altset_idx]; | |
1326 | altsd = get_iface_desc(alts); | |
1327 | snd_assert(altsd->bAlternateSetting == fmt->altsetting, return -EINVAL); | |
1328 | ||
1329 | if (fmt == subs->cur_audiofmt) | |
1330 | return 0; | |
1331 | ||
1332 | /* close the old interface */ | |
1333 | if (subs->interface >= 0 && subs->interface != fmt->iface) { | |
5149fe2c ON |
1334 | if (usb_set_interface(subs->dev, subs->interface, 0) < 0) { |
1335 | snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed\n", | |
1336 | dev->devnum, fmt->iface, fmt->altsetting); | |
1337 | return -EIO; | |
1338 | } | |
1da177e4 LT |
1339 | subs->interface = -1; |
1340 | subs->format = 0; | |
1341 | } | |
1342 | ||
1343 | /* set interface */ | |
1344 | if (subs->interface != fmt->iface || subs->format != fmt->altset_idx) { | |
1345 | if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) { | |
1346 | snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n", | |
1347 | dev->devnum, fmt->iface, fmt->altsetting); | |
1348 | return -EIO; | |
1349 | } | |
1350 | snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting); | |
1351 | subs->interface = fmt->iface; | |
1352 | subs->format = fmt->altset_idx; | |
1353 | } | |
1354 | ||
1355 | /* create a data pipe */ | |
1356 | ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK; | |
1357 | if (is_playback) | |
1358 | subs->datapipe = usb_sndisocpipe(dev, ep); | |
1359 | else | |
1360 | subs->datapipe = usb_rcvisocpipe(dev, ep); | |
573567e0 CL |
1361 | if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH && |
1362 | get_endpoint(alts, 0)->bInterval >= 1 && | |
1363 | get_endpoint(alts, 0)->bInterval <= 4) | |
1364 | subs->datainterval = get_endpoint(alts, 0)->bInterval - 1; | |
1365 | else | |
1366 | subs->datainterval = 0; | |
1da177e4 LT |
1367 | subs->syncpipe = subs->syncinterval = 0; |
1368 | subs->maxpacksize = fmt->maxpacksize; | |
1369 | subs->fill_max = 0; | |
1370 | ||
1371 | /* we need a sync pipe in async OUT or adaptive IN mode */ | |
1372 | /* check the number of EP, since some devices have broken | |
1373 | * descriptors which fool us. if it has only one EP, | |
1374 | * assume it as adaptive-out or sync-in. | |
1375 | */ | |
1376 | attr = fmt->ep_attr & EP_ATTR_MASK; | |
1377 | if (((is_playback && attr == EP_ATTR_ASYNC) || | |
1378 | (! is_playback && attr == EP_ATTR_ADAPTIVE)) && | |
1379 | altsd->bNumEndpoints >= 2) { | |
1380 | /* check sync-pipe endpoint */ | |
1381 | /* ... and check descriptor size before accessing bSynchAddress | |
1382 | because there is a version of the SB Audigy 2 NX firmware lacking | |
1383 | the audio fields in the endpoint descriptors */ | |
1384 | if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 || | |
1385 | (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
1386 | get_endpoint(alts, 1)->bSynchAddress != 0)) { | |
1387 | snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n", | |
1388 | dev->devnum, fmt->iface, fmt->altsetting); | |
1389 | return -EINVAL; | |
1390 | } | |
1391 | ep = get_endpoint(alts, 1)->bEndpointAddress; | |
1392 | if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && | |
1393 | (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || | |
1394 | (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { | |
1395 | snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n", | |
1396 | dev->devnum, fmt->iface, fmt->altsetting); | |
1397 | return -EINVAL; | |
1398 | } | |
1399 | ep &= USB_ENDPOINT_NUMBER_MASK; | |
1400 | if (is_playback) | |
1401 | subs->syncpipe = usb_rcvisocpipe(dev, ep); | |
1402 | else | |
1403 | subs->syncpipe = usb_sndisocpipe(dev, ep); | |
1149a64f CL |
1404 | if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && |
1405 | get_endpoint(alts, 1)->bRefresh >= 1 && | |
1406 | get_endpoint(alts, 1)->bRefresh <= 9) | |
1407 | subs->syncinterval = get_endpoint(alts, 1)->bRefresh; | |
604cf499 | 1408 | else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) |
1149a64f | 1409 | subs->syncinterval = 1; |
604cf499 CL |
1410 | else if (get_endpoint(alts, 1)->bInterval >= 1 && |
1411 | get_endpoint(alts, 1)->bInterval <= 16) | |
1412 | subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1; | |
1413 | else | |
1414 | subs->syncinterval = 3; | |
1da177e4 LT |
1415 | } |
1416 | ||
1417 | /* always fill max packet size */ | |
1418 | if (fmt->attributes & EP_CS_ATTR_FILL_MAX) | |
1419 | subs->fill_max = 1; | |
1420 | ||
1421 | if ((err = init_usb_pitch(dev, subs->interface, alts, fmt)) < 0) | |
1422 | return err; | |
1423 | ||
1424 | subs->cur_audiofmt = fmt; | |
1425 | ||
1426 | #if 0 | |
2a56f51b PM |
1427 | printk("setting done: format = %d, rate = %d..%d, channels = %d\n", |
1428 | fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels); | |
1da177e4 LT |
1429 | printk(" datapipe = 0x%0x, syncpipe = 0x%0x\n", |
1430 | subs->datapipe, subs->syncpipe); | |
1431 | #endif | |
1432 | ||
1433 | return 0; | |
1434 | } | |
1435 | ||
1436 | /* | |
1437 | * hw_params callback | |
1438 | * | |
1439 | * allocate a buffer and set the given audio format. | |
1440 | * | |
1441 | * so far we use a physically linear buffer although packetize transfer | |
1442 | * doesn't need a continuous area. | |
1443 | * if sg buffer is supported on the later version of alsa, we'll follow | |
1444 | * that. | |
1445 | */ | |
86e07d34 TI |
1446 | static int snd_usb_hw_params(struct snd_pcm_substream *substream, |
1447 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 1448 | { |
88518275 | 1449 | struct snd_usb_substream *subs = substream->runtime->private_data; |
1da177e4 LT |
1450 | struct audioformat *fmt; |
1451 | unsigned int channels, rate, format; | |
1452 | int ret, changed; | |
1453 | ||
6207e51b CL |
1454 | ret = snd_pcm_alloc_vmalloc_buffer(substream, |
1455 | params_buffer_bytes(hw_params)); | |
1da177e4 LT |
1456 | if (ret < 0) |
1457 | return ret; | |
1458 | ||
1459 | format = params_format(hw_params); | |
1460 | rate = params_rate(hw_params); | |
1461 | channels = params_channels(hw_params); | |
1462 | fmt = find_format(subs, format, rate, channels); | |
07f51a72 | 1463 | if (!fmt) { |
21a3479a JK |
1464 | snd_printd(KERN_DEBUG "cannot set format: format = 0x%x, rate = %d, channels = %d\n", |
1465 | format, rate, channels); | |
1da177e4 LT |
1466 | return -EINVAL; |
1467 | } | |
1468 | ||
1469 | changed = subs->cur_audiofmt != fmt || | |
1470 | subs->period_bytes != params_period_bytes(hw_params) || | |
1471 | subs->cur_rate != rate; | |
1472 | if ((ret = set_format(subs, fmt)) < 0) | |
1473 | return ret; | |
1474 | ||
1475 | if (subs->cur_rate != rate) { | |
1476 | struct usb_host_interface *alts; | |
1477 | struct usb_interface *iface; | |
1478 | iface = usb_ifnum_to_if(subs->dev, fmt->iface); | |
1479 | alts = &iface->altsetting[fmt->altset_idx]; | |
1480 | ret = init_usb_sample_rate(subs->dev, subs->interface, alts, fmt, rate); | |
1481 | if (ret < 0) | |
1482 | return ret; | |
1483 | subs->cur_rate = rate; | |
1484 | } | |
1485 | ||
1486 | if (changed) { | |
1487 | /* format changed */ | |
1488 | release_substream_urbs(subs, 0); | |
1489 | /* influenced: period_bytes, channels, rate, format, */ | |
1490 | ret = init_substream_urbs(subs, params_period_bytes(hw_params), | |
1491 | params_rate(hw_params), | |
1492 | snd_pcm_format_physical_width(params_format(hw_params)) * params_channels(hw_params)); | |
1493 | } | |
1494 | ||
1495 | return ret; | |
1496 | } | |
1497 | ||
1498 | /* | |
1499 | * hw_free callback | |
1500 | * | |
1501 | * reset the audio format and release the buffer | |
1502 | */ | |
86e07d34 | 1503 | static int snd_usb_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 1504 | { |
88518275 | 1505 | struct snd_usb_substream *subs = substream->runtime->private_data; |
1da177e4 LT |
1506 | |
1507 | subs->cur_audiofmt = NULL; | |
1508 | subs->cur_rate = 0; | |
1509 | subs->period_bytes = 0; | |
de1b8b93 TI |
1510 | if (!subs->stream->chip->shutdown) |
1511 | release_substream_urbs(subs, 0); | |
6207e51b | 1512 | return snd_pcm_free_vmalloc_buffer(substream); |
1da177e4 LT |
1513 | } |
1514 | ||
1515 | /* | |
1516 | * prepare callback | |
1517 | * | |
1518 | * only a few subtle things... | |
1519 | */ | |
86e07d34 | 1520 | static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 1521 | { |
86e07d34 TI |
1522 | struct snd_pcm_runtime *runtime = substream->runtime; |
1523 | struct snd_usb_substream *subs = runtime->private_data; | |
1da177e4 LT |
1524 | |
1525 | if (! subs->cur_audiofmt) { | |
1526 | snd_printk(KERN_ERR "usbaudio: no format is specified!\n"); | |
1527 | return -ENXIO; | |
1528 | } | |
1529 | ||
1530 | /* some unit conversions in runtime */ | |
1531 | subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize); | |
1532 | subs->curframesize = bytes_to_frames(runtime, subs->curpacksize); | |
1533 | ||
1534 | /* reset the pointer */ | |
1da177e4 | 1535 | subs->hwptr_done = 0; |
1da177e4 LT |
1536 | subs->transfer_done = 0; |
1537 | subs->phase = 0; | |
1538 | ||
1539 | /* clear urbs (to be sure) */ | |
1540 | deactivate_urbs(subs, 0, 1); | |
1541 | wait_clear_urbs(subs); | |
1542 | ||
b55bbf06 CL |
1543 | /* for playback, submit the URBs now; otherwise, the first hwptr_done |
1544 | * updates for all URBs would happen at the same time when starting */ | |
1545 | if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) { | |
e4f8e656 | 1546 | subs->ops.prepare = prepare_nodata_playback_urb; |
b55bbf06 CL |
1547 | return start_urbs(subs, runtime); |
1548 | } else | |
1549 | return 0; | |
1da177e4 LT |
1550 | } |
1551 | ||
1700f308 | 1552 | static struct snd_pcm_hardware snd_usb_hardware = |
1da177e4 | 1553 | { |
49045d3d CL |
1554 | .info = SNDRV_PCM_INFO_MMAP | |
1555 | SNDRV_PCM_INFO_MMAP_VALID | | |
1556 | SNDRV_PCM_INFO_BATCH | | |
1557 | SNDRV_PCM_INFO_INTERLEAVED | | |
e4f8e656 CL |
1558 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
1559 | SNDRV_PCM_INFO_PAUSE, | |
d31cbbfd | 1560 | .buffer_bytes_max = 1024 * 1024, |
1da177e4 | 1561 | .period_bytes_min = 64, |
d31cbbfd | 1562 | .period_bytes_max = 512 * 1024, |
1da177e4 LT |
1563 | .periods_min = 2, |
1564 | .periods_max = 1024, | |
1565 | }; | |
1566 | ||
1567 | /* | |
1568 | * h/w constraints | |
1569 | */ | |
1570 | ||
1571 | #ifdef HW_CONST_DEBUG | |
1572 | #define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args) | |
1573 | #else | |
1574 | #define hwc_debug(fmt, args...) /**/ | |
1575 | #endif | |
1576 | ||
86e07d34 | 1577 | static int hw_check_valid_format(struct snd_pcm_hw_params *params, struct audioformat *fp) |
1da177e4 | 1578 | { |
86e07d34 TI |
1579 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
1580 | struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
1581 | struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1582 | |
1583 | /* check the format */ | |
07f51a72 | 1584 | if (!snd_mask_test(fmts, fp->format)) { |
1da177e4 LT |
1585 | hwc_debug(" > check: no supported format %d\n", fp->format); |
1586 | return 0; | |
1587 | } | |
1588 | /* check the channels */ | |
1589 | if (fp->channels < ct->min || fp->channels > ct->max) { | |
1590 | hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); | |
1591 | return 0; | |
1592 | } | |
1593 | /* check the rate is within the range */ | |
1594 | if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { | |
1595 | hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); | |
1596 | return 0; | |
1597 | } | |
1598 | if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { | |
1599 | hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); | |
1600 | return 0; | |
1601 | } | |
1602 | return 1; | |
1603 | } | |
1604 | ||
86e07d34 TI |
1605 | static int hw_rule_rate(struct snd_pcm_hw_params *params, |
1606 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1607 | { |
86e07d34 | 1608 | struct snd_usb_substream *subs = rule->private; |
1da177e4 | 1609 | struct list_head *p; |
86e07d34 | 1610 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
1da177e4 LT |
1611 | unsigned int rmin, rmax; |
1612 | int changed; | |
1613 | ||
1614 | hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); | |
1615 | changed = 0; | |
1616 | rmin = rmax = 0; | |
1617 | list_for_each(p, &subs->fmt_list) { | |
1618 | struct audioformat *fp; | |
1619 | fp = list_entry(p, struct audioformat, list); | |
07f51a72 | 1620 | if (!hw_check_valid_format(params, fp)) |
1da177e4 LT |
1621 | continue; |
1622 | if (changed++) { | |
1623 | if (rmin > fp->rate_min) | |
1624 | rmin = fp->rate_min; | |
1625 | if (rmax < fp->rate_max) | |
1626 | rmax = fp->rate_max; | |
1627 | } else { | |
1628 | rmin = fp->rate_min; | |
1629 | rmax = fp->rate_max; | |
1630 | } | |
1631 | } | |
1632 | ||
07f51a72 | 1633 | if (!changed) { |
1da177e4 LT |
1634 | hwc_debug(" --> get empty\n"); |
1635 | it->empty = 1; | |
1636 | return -EINVAL; | |
1637 | } | |
1638 | ||
1639 | changed = 0; | |
1640 | if (it->min < rmin) { | |
1641 | it->min = rmin; | |
1642 | it->openmin = 0; | |
1643 | changed = 1; | |
1644 | } | |
1645 | if (it->max > rmax) { | |
1646 | it->max = rmax; | |
1647 | it->openmax = 0; | |
1648 | changed = 1; | |
1649 | } | |
1650 | if (snd_interval_checkempty(it)) { | |
1651 | it->empty = 1; | |
1652 | return -EINVAL; | |
1653 | } | |
1654 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1655 | return changed; | |
1656 | } | |
1657 | ||
1658 | ||
86e07d34 TI |
1659 | static int hw_rule_channels(struct snd_pcm_hw_params *params, |
1660 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1661 | { |
86e07d34 | 1662 | struct snd_usb_substream *subs = rule->private; |
1da177e4 | 1663 | struct list_head *p; |
86e07d34 | 1664 | struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
1da177e4 LT |
1665 | unsigned int rmin, rmax; |
1666 | int changed; | |
1667 | ||
1668 | hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); | |
1669 | changed = 0; | |
1670 | rmin = rmax = 0; | |
1671 | list_for_each(p, &subs->fmt_list) { | |
1672 | struct audioformat *fp; | |
1673 | fp = list_entry(p, struct audioformat, list); | |
07f51a72 | 1674 | if (!hw_check_valid_format(params, fp)) |
1da177e4 LT |
1675 | continue; |
1676 | if (changed++) { | |
1677 | if (rmin > fp->channels) | |
1678 | rmin = fp->channels; | |
1679 | if (rmax < fp->channels) | |
1680 | rmax = fp->channels; | |
1681 | } else { | |
1682 | rmin = fp->channels; | |
1683 | rmax = fp->channels; | |
1684 | } | |
1685 | } | |
1686 | ||
07f51a72 | 1687 | if (!changed) { |
1da177e4 LT |
1688 | hwc_debug(" --> get empty\n"); |
1689 | it->empty = 1; | |
1690 | return -EINVAL; | |
1691 | } | |
1692 | ||
1693 | changed = 0; | |
1694 | if (it->min < rmin) { | |
1695 | it->min = rmin; | |
1696 | it->openmin = 0; | |
1697 | changed = 1; | |
1698 | } | |
1699 | if (it->max > rmax) { | |
1700 | it->max = rmax; | |
1701 | it->openmax = 0; | |
1702 | changed = 1; | |
1703 | } | |
1704 | if (snd_interval_checkempty(it)) { | |
1705 | it->empty = 1; | |
1706 | return -EINVAL; | |
1707 | } | |
1708 | hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); | |
1709 | return changed; | |
1710 | } | |
1711 | ||
86e07d34 TI |
1712 | static int hw_rule_format(struct snd_pcm_hw_params *params, |
1713 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1714 | { |
86e07d34 | 1715 | struct snd_usb_substream *subs = rule->private; |
1da177e4 | 1716 | struct list_head *p; |
86e07d34 | 1717 | struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
1da177e4 LT |
1718 | u64 fbits; |
1719 | u32 oldbits[2]; | |
1720 | int changed; | |
1721 | ||
1722 | hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); | |
1723 | fbits = 0; | |
1724 | list_for_each(p, &subs->fmt_list) { | |
1725 | struct audioformat *fp; | |
1726 | fp = list_entry(p, struct audioformat, list); | |
07f51a72 | 1727 | if (!hw_check_valid_format(params, fp)) |
1da177e4 LT |
1728 | continue; |
1729 | fbits |= (1ULL << fp->format); | |
1730 | } | |
1731 | ||
1732 | oldbits[0] = fmt->bits[0]; | |
1733 | oldbits[1] = fmt->bits[1]; | |
1734 | fmt->bits[0] &= (u32)fbits; | |
1735 | fmt->bits[1] &= (u32)(fbits >> 32); | |
07f51a72 | 1736 | if (!fmt->bits[0] && !fmt->bits[1]) { |
1da177e4 LT |
1737 | hwc_debug(" --> get empty\n"); |
1738 | return -EINVAL; | |
1739 | } | |
1740 | changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); | |
1741 | hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); | |
1742 | return changed; | |
1743 | } | |
1744 | ||
1745 | #define MAX_MASK 64 | |
1746 | ||
1747 | /* | |
1748 | * check whether the registered audio formats need special hw-constraints | |
1749 | */ | |
86e07d34 | 1750 | static int check_hw_params_convention(struct snd_usb_substream *subs) |
1da177e4 LT |
1751 | { |
1752 | int i; | |
1753 | u32 *channels; | |
1754 | u32 *rates; | |
1755 | u32 cmaster, rmaster; | |
1756 | u32 rate_min = 0, rate_max = 0; | |
1757 | struct list_head *p; | |
1758 | int err = 1; | |
1759 | ||
1760 | channels = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL); | |
1761 | rates = kcalloc(MAX_MASK, sizeof(u32), GFP_KERNEL); | |
5a220c86 TI |
1762 | if (!channels || !rates) { |
1763 | err = -ENOMEM; | |
ff17e953 | 1764 | goto __out; |
5a220c86 | 1765 | } |
1da177e4 LT |
1766 | |
1767 | list_for_each(p, &subs->fmt_list) { | |
1768 | struct audioformat *f; | |
1769 | f = list_entry(p, struct audioformat, list); | |
1770 | /* unconventional channels? */ | |
1771 | if (f->channels > 32) | |
1772 | goto __out; | |
1773 | /* continuous rate min/max matches? */ | |
1774 | if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) { | |
1775 | if (rate_min && f->rate_min != rate_min) | |
1776 | goto __out; | |
1777 | if (rate_max && f->rate_max != rate_max) | |
1778 | goto __out; | |
1779 | rate_min = f->rate_min; | |
1780 | rate_max = f->rate_max; | |
1781 | } | |
1782 | /* combination of continuous rates and fixed rates? */ | |
1783 | if (rates[f->format] & SNDRV_PCM_RATE_CONTINUOUS) { | |
1784 | if (f->rates != rates[f->format]) | |
1785 | goto __out; | |
1786 | } | |
1787 | if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) { | |
1788 | if (rates[f->format] && rates[f->format] != f->rates) | |
1789 | goto __out; | |
1790 | } | |
1791 | channels[f->format] |= (1 << f->channels); | |
1792 | rates[f->format] |= f->rates; | |
a79eee8d | 1793 | /* needs knot? */ |
918f3a0e | 1794 | if (f->rates & SNDRV_PCM_RATE_KNOT) |
a79eee8d | 1795 | goto __out; |
1da177e4 LT |
1796 | } |
1797 | /* check whether channels and rates match for all formats */ | |
1798 | cmaster = rmaster = 0; | |
1799 | for (i = 0; i < MAX_MASK; i++) { | |
1800 | if (cmaster != channels[i] && cmaster && channels[i]) | |
1801 | goto __out; | |
1802 | if (rmaster != rates[i] && rmaster && rates[i]) | |
1803 | goto __out; | |
1804 | if (channels[i]) | |
1805 | cmaster = channels[i]; | |
1806 | if (rates[i]) | |
1807 | rmaster = rates[i]; | |
1808 | } | |
1809 | /* check whether channels match for all distinct rates */ | |
1810 | memset(channels, 0, MAX_MASK * sizeof(u32)); | |
1811 | list_for_each(p, &subs->fmt_list) { | |
1812 | struct audioformat *f; | |
1813 | f = list_entry(p, struct audioformat, list); | |
1814 | if (f->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
1815 | continue; | |
1816 | for (i = 0; i < 32; i++) { | |
1817 | if (f->rates & (1 << i)) | |
1818 | channels[i] |= (1 << f->channels); | |
1819 | } | |
1820 | } | |
1821 | cmaster = 0; | |
1822 | for (i = 0; i < 32; i++) { | |
1823 | if (cmaster != channels[i] && cmaster && channels[i]) | |
1824 | goto __out; | |
1825 | if (channels[i]) | |
1826 | cmaster = channels[i]; | |
1827 | } | |
1828 | err = 0; | |
1829 | ||
1830 | __out: | |
1831 | kfree(channels); | |
1832 | kfree(rates); | |
1833 | return err; | |
1834 | } | |
1835 | ||
a79eee8d LR |
1836 | /* |
1837 | * If the device supports unusual bit rates, does the request meet these? | |
1838 | */ | |
1839 | static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, | |
1840 | struct snd_usb_substream *subs) | |
1841 | { | |
8fec560d TI |
1842 | struct audioformat *fp; |
1843 | int count = 0, needs_knot = 0; | |
a79eee8d LR |
1844 | int err; |
1845 | ||
8fec560d TI |
1846 | list_for_each_entry(fp, &subs->fmt_list, list) { |
1847 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) | |
1848 | return 0; | |
1849 | count += fp->nr_rates; | |
918f3a0e | 1850 | if (fp->rates & SNDRV_PCM_RATE_KNOT) |
8fec560d | 1851 | needs_knot = 1; |
a79eee8d | 1852 | } |
8fec560d TI |
1853 | if (!needs_knot) |
1854 | return 0; | |
1855 | ||
1856 | subs->rate_list.count = count; | |
1857 | subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL); | |
1858 | subs->rate_list.mask = 0; | |
1859 | count = 0; | |
1860 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
1861 | int i; | |
1862 | for (i = 0; i < fp->nr_rates; i++) | |
1863 | subs->rate_list.list[count++] = fp->rate_table[i]; | |
1864 | } | |
1865 | err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1866 | &subs->rate_list); | |
1867 | if (err < 0) | |
1868 | return err; | |
a79eee8d LR |
1869 | |
1870 | return 0; | |
1871 | } | |
1872 | ||
1da177e4 LT |
1873 | |
1874 | /* | |
1875 | * set up the runtime hardware information. | |
1876 | */ | |
1877 | ||
86e07d34 | 1878 | static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) |
1da177e4 LT |
1879 | { |
1880 | struct list_head *p; | |
1881 | int err; | |
1882 | ||
1883 | runtime->hw.formats = subs->formats; | |
1884 | ||
1885 | runtime->hw.rate_min = 0x7fffffff; | |
1886 | runtime->hw.rate_max = 0; | |
1887 | runtime->hw.channels_min = 256; | |
1888 | runtime->hw.channels_max = 0; | |
1889 | runtime->hw.rates = 0; | |
1890 | /* check min/max rates and channels */ | |
1891 | list_for_each(p, &subs->fmt_list) { | |
1892 | struct audioformat *fp; | |
1893 | fp = list_entry(p, struct audioformat, list); | |
1894 | runtime->hw.rates |= fp->rates; | |
1895 | if (runtime->hw.rate_min > fp->rate_min) | |
1896 | runtime->hw.rate_min = fp->rate_min; | |
1897 | if (runtime->hw.rate_max < fp->rate_max) | |
1898 | runtime->hw.rate_max = fp->rate_max; | |
1899 | if (runtime->hw.channels_min > fp->channels) | |
1900 | runtime->hw.channels_min = fp->channels; | |
1901 | if (runtime->hw.channels_max < fp->channels) | |
1902 | runtime->hw.channels_max = fp->channels; | |
1903 | if (fp->fmt_type == USB_FORMAT_TYPE_II && fp->frame_size > 0) { | |
1904 | /* FIXME: there might be more than one audio formats... */ | |
1905 | runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = | |
1906 | fp->frame_size; | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | /* set the period time minimum 1ms */ | |
81c4899f TI |
1911 | /* FIXME: high-speed mode allows 125us minimum period, but many parts |
1912 | * in the current code assume the 1ms period. | |
1913 | */ | |
1da177e4 | 1914 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, |
81c4899f | 1915 | 1000 * MIN_PACKS_URB, |
1da177e4 LT |
1916 | /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX); |
1917 | ||
5a220c86 TI |
1918 | err = check_hw_params_convention(subs); |
1919 | if (err < 0) | |
1920 | return err; | |
1921 | else if (err) { | |
1da177e4 LT |
1922 | hwc_debug("setting extra hw constraints...\n"); |
1923 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1924 | hw_rule_rate, subs, | |
1925 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1926 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1927 | -1)) < 0) | |
1928 | return err; | |
1929 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1930 | hw_rule_channels, subs, | |
1931 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1932 | SNDRV_PCM_HW_PARAM_RATE, | |
1933 | -1)) < 0) | |
1934 | return err; | |
1935 | if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1936 | hw_rule_format, subs, | |
1937 | SNDRV_PCM_HW_PARAM_RATE, | |
1938 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
1939 | -1)) < 0) | |
1940 | return err; | |
a79eee8d LR |
1941 | if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0) |
1942 | return err; | |
1da177e4 LT |
1943 | } |
1944 | return 0; | |
1945 | } | |
1946 | ||
1700f308 | 1947 | static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction) |
1da177e4 | 1948 | { |
86e07d34 TI |
1949 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1950 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1951 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1da177e4 LT |
1952 | |
1953 | subs->interface = -1; | |
1954 | subs->format = 0; | |
1700f308 | 1955 | runtime->hw = snd_usb_hardware; |
1da177e4 LT |
1956 | runtime->private_data = subs; |
1957 | subs->pcm_substream = substream; | |
1958 | return setup_hw_info(runtime, subs); | |
1959 | } | |
1960 | ||
86e07d34 | 1961 | static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) |
1da177e4 | 1962 | { |
86e07d34 TI |
1963 | struct snd_usb_stream *as = snd_pcm_substream_chip(substream); |
1964 | struct snd_usb_substream *subs = &as->substream[direction]; | |
1da177e4 LT |
1965 | |
1966 | if (subs->interface >= 0) { | |
1967 | usb_set_interface(subs->dev, subs->interface, 0); | |
1968 | subs->interface = -1; | |
1969 | } | |
1970 | subs->pcm_substream = NULL; | |
1971 | return 0; | |
1972 | } | |
1973 | ||
86e07d34 | 1974 | static int snd_usb_playback_open(struct snd_pcm_substream *substream) |
1da177e4 | 1975 | { |
1700f308 | 1976 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK); |
1da177e4 LT |
1977 | } |
1978 | ||
86e07d34 | 1979 | static int snd_usb_playback_close(struct snd_pcm_substream *substream) |
1da177e4 LT |
1980 | { |
1981 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK); | |
1982 | } | |
1983 | ||
86e07d34 | 1984 | static int snd_usb_capture_open(struct snd_pcm_substream *substream) |
1da177e4 | 1985 | { |
1700f308 | 1986 | return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE); |
1da177e4 LT |
1987 | } |
1988 | ||
86e07d34 | 1989 | static int snd_usb_capture_close(struct snd_pcm_substream *substream) |
1da177e4 LT |
1990 | { |
1991 | return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE); | |
1992 | } | |
1993 | ||
86e07d34 | 1994 | static struct snd_pcm_ops snd_usb_playback_ops = { |
1da177e4 LT |
1995 | .open = snd_usb_playback_open, |
1996 | .close = snd_usb_playback_close, | |
1997 | .ioctl = snd_pcm_lib_ioctl, | |
1998 | .hw_params = snd_usb_hw_params, | |
1999 | .hw_free = snd_usb_hw_free, | |
2000 | .prepare = snd_usb_pcm_prepare, | |
b55bbf06 | 2001 | .trigger = snd_usb_pcm_playback_trigger, |
1da177e4 | 2002 | .pointer = snd_usb_pcm_pointer, |
6207e51b | 2003 | .page = snd_pcm_get_vmalloc_page, |
1da177e4 LT |
2004 | }; |
2005 | ||
86e07d34 | 2006 | static struct snd_pcm_ops snd_usb_capture_ops = { |
1da177e4 LT |
2007 | .open = snd_usb_capture_open, |
2008 | .close = snd_usb_capture_close, | |
2009 | .ioctl = snd_pcm_lib_ioctl, | |
2010 | .hw_params = snd_usb_hw_params, | |
2011 | .hw_free = snd_usb_hw_free, | |
2012 | .prepare = snd_usb_pcm_prepare, | |
b55bbf06 | 2013 | .trigger = snd_usb_pcm_capture_trigger, |
1da177e4 | 2014 | .pointer = snd_usb_pcm_pointer, |
6207e51b | 2015 | .page = snd_pcm_get_vmalloc_page, |
1da177e4 LT |
2016 | }; |
2017 | ||
2018 | ||
2019 | ||
2020 | /* | |
2021 | * helper functions | |
2022 | */ | |
2023 | ||
2024 | /* | |
2025 | * combine bytes and get an integer value | |
2026 | */ | |
2027 | unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size) | |
2028 | { | |
2029 | switch (size) { | |
2030 | case 1: return *bytes; | |
2031 | case 2: return combine_word(bytes); | |
2032 | case 3: return combine_triple(bytes); | |
2033 | case 4: return combine_quad(bytes); | |
2034 | default: return 0; | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | /* | |
2039 | * parse descriptor buffer and return the pointer starting the given | |
2040 | * descriptor type. | |
2041 | */ | |
2042 | void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype) | |
2043 | { | |
2044 | u8 *p, *end, *next; | |
2045 | ||
2046 | p = descstart; | |
2047 | end = p + desclen; | |
2048 | for (; p < end;) { | |
2049 | if (p[0] < 2) | |
2050 | return NULL; | |
2051 | next = p + p[0]; | |
2052 | if (next > end) | |
2053 | return NULL; | |
2054 | if (p[1] == dtype && (!after || (void *)p > after)) { | |
2055 | return p; | |
2056 | } | |
2057 | p = next; | |
2058 | } | |
2059 | return NULL; | |
2060 | } | |
2061 | ||
2062 | /* | |
2063 | * find a class-specified interface descriptor with the given subtype. | |
2064 | */ | |
2065 | void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype) | |
2066 | { | |
2067 | unsigned char *p = after; | |
2068 | ||
2069 | while ((p = snd_usb_find_desc(buffer, buflen, p, | |
2070 | USB_DT_CS_INTERFACE)) != NULL) { | |
2071 | if (p[0] >= 3 && p[2] == dsubtype) | |
2072 | return p; | |
2073 | } | |
2074 | return NULL; | |
2075 | } | |
2076 | ||
2077 | /* | |
2078 | * Wrapper for usb_control_msg(). | |
2079 | * Allocates a temp buffer to prevent dmaing from/to the stack. | |
2080 | */ | |
2081 | int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, | |
2082 | __u8 requesttype, __u16 value, __u16 index, void *data, | |
2083 | __u16 size, int timeout) | |
2084 | { | |
2085 | int err; | |
2086 | void *buf = NULL; | |
2087 | ||
2088 | if (size > 0) { | |
52978be6 | 2089 | buf = kmemdup(data, size, GFP_KERNEL); |
1da177e4 LT |
2090 | if (!buf) |
2091 | return -ENOMEM; | |
1da177e4 LT |
2092 | } |
2093 | err = usb_control_msg(dev, pipe, request, requesttype, | |
2094 | value, index, buf, size, timeout); | |
2095 | if (size > 0) { | |
2096 | memcpy(data, buf, size); | |
2097 | kfree(buf); | |
2098 | } | |
2099 | return err; | |
2100 | } | |
2101 | ||
2102 | ||
2103 | /* | |
2104 | * entry point for linux usb interface | |
2105 | */ | |
2106 | ||
2107 | static int usb_audio_probe(struct usb_interface *intf, | |
2108 | const struct usb_device_id *id); | |
2109 | static void usb_audio_disconnect(struct usb_interface *intf); | |
93521d27 AM |
2110 | |
2111 | #ifdef CONFIG_PM | |
f85bf29c ON |
2112 | static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message); |
2113 | static int usb_audio_resume(struct usb_interface *intf); | |
93521d27 AM |
2114 | #else |
2115 | #define usb_audio_suspend NULL | |
2116 | #define usb_audio_resume NULL | |
2117 | #endif | |
1da177e4 LT |
2118 | |
2119 | static struct usb_device_id usb_audio_ids [] = { | |
2120 | #include "usbquirks.h" | |
2121 | { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS), | |
2122 | .bInterfaceClass = USB_CLASS_AUDIO, | |
2123 | .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL }, | |
2124 | { } /* Terminating entry */ | |
2125 | }; | |
2126 | ||
2127 | MODULE_DEVICE_TABLE (usb, usb_audio_ids); | |
2128 | ||
2129 | static struct usb_driver usb_audio_driver = { | |
1da177e4 LT |
2130 | .name = "snd-usb-audio", |
2131 | .probe = usb_audio_probe, | |
2132 | .disconnect = usb_audio_disconnect, | |
f85bf29c ON |
2133 | .suspend = usb_audio_suspend, |
2134 | .resume = usb_audio_resume, | |
1da177e4 LT |
2135 | .id_table = usb_audio_ids, |
2136 | }; | |
2137 | ||
2138 | ||
727f317a | 2139 | #if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS) |
21a3479a | 2140 | |
1da177e4 LT |
2141 | /* |
2142 | * proc interface for list the supported pcm formats | |
2143 | */ | |
86e07d34 | 2144 | static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) |
1da177e4 LT |
2145 | { |
2146 | struct list_head *p; | |
2147 | static char *sync_types[4] = { | |
2148 | "NONE", "ASYNC", "ADAPTIVE", "SYNC" | |
2149 | }; | |
2150 | ||
2151 | list_for_each(p, &subs->fmt_list) { | |
2152 | struct audioformat *fp; | |
2153 | fp = list_entry(p, struct audioformat, list); | |
2154 | snd_iprintf(buffer, " Interface %d\n", fp->iface); | |
2155 | snd_iprintf(buffer, " Altset %d\n", fp->altsetting); | |
3f72a30c | 2156 | snd_iprintf(buffer, " Format: 0x%x\n", fp->format); |
1da177e4 LT |
2157 | snd_iprintf(buffer, " Channels: %d\n", fp->channels); |
2158 | snd_iprintf(buffer, " Endpoint: %d %s (%s)\n", | |
2159 | fp->endpoint & USB_ENDPOINT_NUMBER_MASK, | |
2160 | fp->endpoint & USB_DIR_IN ? "IN" : "OUT", | |
2161 | sync_types[(fp->ep_attr & EP_ATTR_MASK) >> 2]); | |
2162 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) { | |
2163 | snd_iprintf(buffer, " Rates: %d - %d (continuous)\n", | |
2164 | fp->rate_min, fp->rate_max); | |
2165 | } else { | |
2166 | unsigned int i; | |
2167 | snd_iprintf(buffer, " Rates: "); | |
2168 | for (i = 0; i < fp->nr_rates; i++) { | |
2169 | if (i > 0) | |
2170 | snd_iprintf(buffer, ", "); | |
2171 | snd_iprintf(buffer, "%d", fp->rate_table[i]); | |
2172 | } | |
2173 | snd_iprintf(buffer, "\n"); | |
2174 | } | |
2175 | // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize); | |
2176 | // snd_iprintf(buffer, " EP Attribute = 0x%x\n", fp->attributes); | |
2177 | } | |
2178 | } | |
2179 | ||
86e07d34 | 2180 | static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) |
1da177e4 LT |
2181 | { |
2182 | if (subs->running) { | |
2183 | unsigned int i; | |
2184 | snd_iprintf(buffer, " Status: Running\n"); | |
2185 | snd_iprintf(buffer, " Interface = %d\n", subs->interface); | |
2186 | snd_iprintf(buffer, " Altset = %d\n", subs->format); | |
2187 | snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs); | |
2188 | for (i = 0; i < subs->nurbs; i++) | |
2189 | snd_iprintf(buffer, "%d ", subs->dataurb[i].packets); | |
2190 | snd_iprintf(buffer, "]\n"); | |
2191 | snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize); | |
08fe1589 | 2192 | snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n", |
1da177e4 LT |
2193 | snd_usb_get_speed(subs->dev) == USB_SPEED_FULL |
2194 | ? get_full_speed_hz(subs->freqm) | |
08fe1589 CL |
2195 | : get_high_speed_hz(subs->freqm), |
2196 | subs->freqm >> 16, subs->freqm & 0xffff); | |
1da177e4 LT |
2197 | } else { |
2198 | snd_iprintf(buffer, " Status: Stop\n"); | |
2199 | } | |
2200 | } | |
2201 | ||
86e07d34 | 2202 | static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
1da177e4 | 2203 | { |
86e07d34 | 2204 | struct snd_usb_stream *stream = entry->private_data; |
1da177e4 LT |
2205 | |
2206 | snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name); | |
2207 | ||
2208 | if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) { | |
2209 | snd_iprintf(buffer, "\nPlayback:\n"); | |
2210 | proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); | |
2211 | proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); | |
2212 | } | |
2213 | if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) { | |
2214 | snd_iprintf(buffer, "\nCapture:\n"); | |
2215 | proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); | |
2216 | proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); | |
2217 | } | |
2218 | } | |
2219 | ||
86e07d34 | 2220 | static void proc_pcm_format_add(struct snd_usb_stream *stream) |
1da177e4 | 2221 | { |
86e07d34 | 2222 | struct snd_info_entry *entry; |
1da177e4 | 2223 | char name[32]; |
86e07d34 | 2224 | struct snd_card *card = stream->chip->card; |
1da177e4 LT |
2225 | |
2226 | sprintf(name, "stream%d", stream->pcm_index); | |
07f51a72 | 2227 | if (!snd_card_proc_new(card, name, &entry)) |
bf850204 | 2228 | snd_info_set_text_ops(entry, stream, proc_pcm_format_read); |
1da177e4 LT |
2229 | } |
2230 | ||
21a3479a JK |
2231 | #else |
2232 | ||
2233 | static inline void proc_pcm_format_add(struct snd_usb_stream *stream) | |
2234 | { | |
2235 | } | |
2236 | ||
2237 | #endif | |
1da177e4 LT |
2238 | |
2239 | /* | |
2240 | * initialize the substream instance. | |
2241 | */ | |
2242 | ||
86e07d34 | 2243 | static void init_substream(struct snd_usb_stream *as, int stream, struct audioformat *fp) |
1da177e4 | 2244 | { |
86e07d34 | 2245 | struct snd_usb_substream *subs = &as->substream[stream]; |
1da177e4 LT |
2246 | |
2247 | INIT_LIST_HEAD(&subs->fmt_list); | |
2248 | spin_lock_init(&subs->lock); | |
2249 | ||
2250 | subs->stream = as; | |
2251 | subs->direction = stream; | |
2252 | subs->dev = as->chip->dev; | |
d513202e | 2253 | if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) { |
1da177e4 | 2254 | subs->ops = audio_urb_ops[stream]; |
d513202e | 2255 | } else { |
1da177e4 | 2256 | subs->ops = audio_urb_ops_high_speed[stream]; |
d513202e CL |
2257 | switch (as->chip->usb_id) { |
2258 | case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */ | |
2259 | case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */ | |
2260 | subs->ops.retire_sync = retire_playback_sync_urb_hs_emu; | |
2261 | break; | |
2262 | } | |
2263 | } | |
1da177e4 LT |
2264 | snd_pcm_set_ops(as->pcm, stream, |
2265 | stream == SNDRV_PCM_STREAM_PLAYBACK ? | |
2266 | &snd_usb_playback_ops : &snd_usb_capture_ops); | |
2267 | ||
2268 | list_add_tail(&fp->list, &subs->fmt_list); | |
2269 | subs->formats |= 1ULL << fp->format; | |
2270 | subs->endpoint = fp->endpoint; | |
2271 | subs->num_formats++; | |
2272 | subs->fmt_type = fp->fmt_type; | |
2273 | } | |
2274 | ||
2275 | ||
2276 | /* | |
2277 | * free a substream | |
2278 | */ | |
86e07d34 | 2279 | static void free_substream(struct snd_usb_substream *subs) |
1da177e4 LT |
2280 | { |
2281 | struct list_head *p, *n; | |
2282 | ||
07f51a72 | 2283 | if (!subs->num_formats) |
1da177e4 LT |
2284 | return; /* not initialized */ |
2285 | list_for_each_safe(p, n, &subs->fmt_list) { | |
2286 | struct audioformat *fp = list_entry(p, struct audioformat, list); | |
2287 | kfree(fp->rate_table); | |
2288 | kfree(fp); | |
2289 | } | |
8fec560d | 2290 | kfree(subs->rate_list.list); |
1da177e4 LT |
2291 | } |
2292 | ||
2293 | ||
2294 | /* | |
2295 | * free a usb stream instance | |
2296 | */ | |
86e07d34 | 2297 | static void snd_usb_audio_stream_free(struct snd_usb_stream *stream) |
1da177e4 LT |
2298 | { |
2299 | free_substream(&stream->substream[0]); | |
2300 | free_substream(&stream->substream[1]); | |
2301 | list_del(&stream->list); | |
2302 | kfree(stream); | |
2303 | } | |
2304 | ||
86e07d34 | 2305 | static void snd_usb_audio_pcm_free(struct snd_pcm *pcm) |
1da177e4 | 2306 | { |
86e07d34 | 2307 | struct snd_usb_stream *stream = pcm->private_data; |
1da177e4 LT |
2308 | if (stream) { |
2309 | stream->pcm = NULL; | |
1da177e4 LT |
2310 | snd_usb_audio_stream_free(stream); |
2311 | } | |
2312 | } | |
2313 | ||
2314 | ||
2315 | /* | |
2316 | * add this endpoint to the chip instance. | |
2317 | * if a stream with the same endpoint already exists, append to it. | |
2318 | * if not, create a new pcm stream. | |
2319 | */ | |
86e07d34 | 2320 | static int add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp) |
1da177e4 LT |
2321 | { |
2322 | struct list_head *p; | |
86e07d34 TI |
2323 | struct snd_usb_stream *as; |
2324 | struct snd_usb_substream *subs; | |
2325 | struct snd_pcm *pcm; | |
1da177e4 LT |
2326 | int err; |
2327 | ||
2328 | list_for_each(p, &chip->pcm_list) { | |
86e07d34 | 2329 | as = list_entry(p, struct snd_usb_stream, list); |
1da177e4 LT |
2330 | if (as->fmt_type != fp->fmt_type) |
2331 | continue; | |
2332 | subs = &as->substream[stream]; | |
07f51a72 | 2333 | if (!subs->endpoint) |
1da177e4 LT |
2334 | continue; |
2335 | if (subs->endpoint == fp->endpoint) { | |
2336 | list_add_tail(&fp->list, &subs->fmt_list); | |
2337 | subs->num_formats++; | |
2338 | subs->formats |= 1ULL << fp->format; | |
2339 | return 0; | |
2340 | } | |
2341 | } | |
2342 | /* look for an empty stream */ | |
2343 | list_for_each(p, &chip->pcm_list) { | |
86e07d34 | 2344 | as = list_entry(p, struct snd_usb_stream, list); |
1da177e4 LT |
2345 | if (as->fmt_type != fp->fmt_type) |
2346 | continue; | |
2347 | subs = &as->substream[stream]; | |
2348 | if (subs->endpoint) | |
2349 | continue; | |
2350 | err = snd_pcm_new_stream(as->pcm, stream, 1); | |
2351 | if (err < 0) | |
2352 | return err; | |
2353 | init_substream(as, stream, fp); | |
2354 | return 0; | |
2355 | } | |
2356 | ||
2357 | /* create a new pcm */ | |
59feddb2 | 2358 | as = kzalloc(sizeof(*as), GFP_KERNEL); |
07f51a72 | 2359 | if (!as) |
1da177e4 | 2360 | return -ENOMEM; |
1da177e4 LT |
2361 | as->pcm_index = chip->pcm_devs; |
2362 | as->chip = chip; | |
2363 | as->fmt_type = fp->fmt_type; | |
2364 | err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs, | |
2365 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0, | |
2366 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1, | |
2367 | &pcm); | |
2368 | if (err < 0) { | |
2369 | kfree(as); | |
2370 | return err; | |
2371 | } | |
2372 | as->pcm = pcm; | |
2373 | pcm->private_data = as; | |
2374 | pcm->private_free = snd_usb_audio_pcm_free; | |
2375 | pcm->info_flags = 0; | |
2376 | if (chip->pcm_devs > 0) | |
2377 | sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs); | |
2378 | else | |
2379 | strcpy(pcm->name, "USB Audio"); | |
2380 | ||
2381 | init_substream(as, stream, fp); | |
2382 | ||
2383 | list_add(&as->list, &chip->pcm_list); | |
2384 | chip->pcm_devs++; | |
2385 | ||
2386 | proc_pcm_format_add(as); | |
2387 | ||
2388 | return 0; | |
2389 | } | |
2390 | ||
2391 | ||
2392 | /* | |
2393 | * check if the device uses big-endian samples | |
2394 | */ | |
86e07d34 | 2395 | static int is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp) |
1da177e4 | 2396 | { |
27d10f56 CL |
2397 | switch (chip->usb_id) { |
2398 | case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */ | |
2399 | if (fp->endpoint & USB_DIR_IN) | |
1da177e4 | 2400 | return 1; |
27d10f56 CL |
2401 | break; |
2402 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
f8c78b82 TLM |
2403 | if (device_setup[chip->index] == 0x00 || |
2404 | fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3) | |
2405 | return 1; | |
1da177e4 LT |
2406 | } |
2407 | return 0; | |
2408 | } | |
2409 | ||
2410 | /* | |
2411 | * parse the audio format type I descriptor | |
2412 | * and returns the corresponding pcm format | |
2413 | * | |
2414 | * @dev: usb device | |
2415 | * @fp: audioformat record | |
2416 | * @format: the format tag (wFormatTag) | |
2417 | * @fmt: the format type descriptor | |
2418 | */ | |
86e07d34 | 2419 | static int parse_audio_format_i_type(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2420 | int format, unsigned char *fmt) |
2421 | { | |
2422 | int pcm_format; | |
2423 | int sample_width, sample_bytes; | |
2424 | ||
2425 | /* FIXME: correct endianess and sign? */ | |
2426 | pcm_format = -1; | |
2427 | sample_width = fmt[6]; | |
2428 | sample_bytes = fmt[5]; | |
2429 | switch (format) { | |
2430 | case 0: /* some devices don't define this correctly... */ | |
2431 | snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n", | |
27d10f56 | 2432 | chip->dev->devnum, fp->iface, fp->altsetting); |
1da177e4 LT |
2433 | /* fall-through */ |
2434 | case USB_AUDIO_FORMAT_PCM: | |
2435 | if (sample_width > sample_bytes * 8) { | |
2436 | snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n", | |
27d10f56 | 2437 | chip->dev->devnum, fp->iface, fp->altsetting, |
1da177e4 LT |
2438 | sample_width, sample_bytes); |
2439 | } | |
2440 | /* check the format byte size */ | |
2441 | switch (fmt[5]) { | |
2442 | case 1: | |
2443 | pcm_format = SNDRV_PCM_FORMAT_S8; | |
2444 | break; | |
2445 | case 2: | |
27d10f56 | 2446 | if (is_big_endian_format(chip, fp)) |
1da177e4 LT |
2447 | pcm_format = SNDRV_PCM_FORMAT_S16_BE; /* grrr, big endian!! */ |
2448 | else | |
2449 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
2450 | break; | |
2451 | case 3: | |
27d10f56 | 2452 | if (is_big_endian_format(chip, fp)) |
1da177e4 LT |
2453 | pcm_format = SNDRV_PCM_FORMAT_S24_3BE; /* grrr, big endian!! */ |
2454 | else | |
2455 | pcm_format = SNDRV_PCM_FORMAT_S24_3LE; | |
2456 | break; | |
2457 | case 4: | |
2458 | pcm_format = SNDRV_PCM_FORMAT_S32_LE; | |
2459 | break; | |
2460 | default: | |
2461 | snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n", | |
27d10f56 CL |
2462 | chip->dev->devnum, fp->iface, |
2463 | fp->altsetting, sample_width, sample_bytes); | |
1da177e4 LT |
2464 | break; |
2465 | } | |
2466 | break; | |
2467 | case USB_AUDIO_FORMAT_PCM8: | |
2a56f51b PM |
2468 | pcm_format = SNDRV_PCM_FORMAT_U8; |
2469 | ||
2470 | /* Dallas DS4201 workaround: it advertises U8 format, but really | |
2471 | supports S8. */ | |
27d10f56 | 2472 | if (chip->usb_id == USB_ID(0x04fa, 0x4201)) |
1da177e4 | 2473 | pcm_format = SNDRV_PCM_FORMAT_S8; |
1da177e4 LT |
2474 | break; |
2475 | case USB_AUDIO_FORMAT_IEEE_FLOAT: | |
2476 | pcm_format = SNDRV_PCM_FORMAT_FLOAT_LE; | |
2477 | break; | |
2478 | case USB_AUDIO_FORMAT_ALAW: | |
2479 | pcm_format = SNDRV_PCM_FORMAT_A_LAW; | |
2480 | break; | |
2481 | case USB_AUDIO_FORMAT_MU_LAW: | |
2482 | pcm_format = SNDRV_PCM_FORMAT_MU_LAW; | |
2483 | break; | |
2484 | default: | |
2485 | snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n", | |
27d10f56 | 2486 | chip->dev->devnum, fp->iface, fp->altsetting, format); |
1da177e4 LT |
2487 | break; |
2488 | } | |
2489 | return pcm_format; | |
2490 | } | |
2491 | ||
2492 | ||
2493 | /* | |
2494 | * parse the format descriptor and stores the possible sample rates | |
2495 | * on the audioformat table. | |
2496 | * | |
2497 | * @dev: usb device | |
2498 | * @fp: audioformat record | |
2499 | * @fmt: the format descriptor | |
2500 | * @offset: the start offset of descriptor pointing the rate type | |
2501 | * (7 for type I and II, 8 for type II) | |
2502 | */ | |
86e07d34 | 2503 | static int parse_audio_format_rates(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2504 | unsigned char *fmt, int offset) |
2505 | { | |
2506 | int nr_rates = fmt[offset]; | |
918f3a0e | 2507 | |
1da177e4 LT |
2508 | if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) { |
2509 | snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n", | |
27d10f56 | 2510 | chip->dev->devnum, fp->iface, fp->altsetting); |
1da177e4 LT |
2511 | return -1; |
2512 | } | |
2513 | ||
2514 | if (nr_rates) { | |
2515 | /* | |
2516 | * build the rate table and bitmap flags | |
2517 | */ | |
918f3a0e | 2518 | int r, idx; |
beb60119 | 2519 | unsigned int nonzero_rates = 0; |
918f3a0e | 2520 | |
1da177e4 LT |
2521 | fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); |
2522 | if (fp->rate_table == NULL) { | |
2523 | snd_printk(KERN_ERR "cannot malloc\n"); | |
2524 | return -1; | |
2525 | } | |
2526 | ||
2527 | fp->nr_rates = nr_rates; | |
2528 | fp->rate_min = fp->rate_max = combine_triple(&fmt[8]); | |
2529 | for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { | |
987411b7 CL |
2530 | unsigned int rate = combine_triple(&fmt[idx]); |
2531 | /* C-Media CM6501 mislabels its 96 kHz altsetting */ | |
2532 | if (rate == 48000 && nr_rates == 1 && | |
2533 | chip->usb_id == USB_ID(0x0d8c, 0x0201) && | |
2534 | fp->altsetting == 5 && fp->maxpacksize == 392) | |
2535 | rate = 96000; | |
2536 | fp->rate_table[r] = rate; | |
beb60119 | 2537 | nonzero_rates |= rate; |
1da177e4 LT |
2538 | if (rate < fp->rate_min) |
2539 | fp->rate_min = rate; | |
2540 | else if (rate > fp->rate_max) | |
2541 | fp->rate_max = rate; | |
918f3a0e | 2542 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); |
1da177e4 | 2543 | } |
beb60119 GJ |
2544 | if (!nonzero_rates) { |
2545 | hwc_debug("All rates were zero. Skipping format!\n"); | |
2546 | return -1; | |
2547 | } | |
1da177e4 LT |
2548 | } else { |
2549 | /* continuous rates */ | |
2550 | fp->rates = SNDRV_PCM_RATE_CONTINUOUS; | |
2551 | fp->rate_min = combine_triple(&fmt[offset + 1]); | |
2552 | fp->rate_max = combine_triple(&fmt[offset + 4]); | |
2553 | } | |
2554 | return 0; | |
2555 | } | |
2556 | ||
2557 | /* | |
2558 | * parse the format type I and III descriptors | |
2559 | */ | |
86e07d34 | 2560 | static int parse_audio_format_i(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2561 | int format, unsigned char *fmt) |
2562 | { | |
2563 | int pcm_format; | |
2564 | ||
2565 | if (fmt[3] == USB_FORMAT_TYPE_III) { | |
2566 | /* FIXME: the format type is really IECxxx | |
2567 | * but we give normal PCM format to get the existing | |
2568 | * apps working... | |
2569 | */ | |
cac19c3b TLM |
2570 | switch (chip->usb_id) { |
2571 | ||
2572 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
2573 | if (device_setup[chip->index] == 0x00 && | |
2574 | fp->altsetting == 6) | |
2575 | pcm_format = SNDRV_PCM_FORMAT_S16_BE; | |
2576 | else | |
2577 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
2578 | break; | |
2579 | default: | |
2580 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
2581 | } | |
1da177e4 | 2582 | } else { |
27d10f56 | 2583 | pcm_format = parse_audio_format_i_type(chip, fp, format, fmt); |
1da177e4 LT |
2584 | if (pcm_format < 0) |
2585 | return -1; | |
2586 | } | |
2587 | fp->format = pcm_format; | |
2588 | fp->channels = fmt[4]; | |
2589 | if (fp->channels < 1) { | |
2590 | snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n", | |
27d10f56 | 2591 | chip->dev->devnum, fp->iface, fp->altsetting, fp->channels); |
1da177e4 LT |
2592 | return -1; |
2593 | } | |
27d10f56 | 2594 | return parse_audio_format_rates(chip, fp, fmt, 7); |
1da177e4 LT |
2595 | } |
2596 | ||
2597 | /* | |
2598 | * prase the format type II descriptor | |
2599 | */ | |
86e07d34 | 2600 | static int parse_audio_format_ii(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2601 | int format, unsigned char *fmt) |
2602 | { | |
2603 | int brate, framesize; | |
2604 | switch (format) { | |
2605 | case USB_AUDIO_FORMAT_AC3: | |
2606 | /* FIXME: there is no AC3 format defined yet */ | |
2607 | // fp->format = SNDRV_PCM_FORMAT_AC3; | |
2608 | fp->format = SNDRV_PCM_FORMAT_U8; /* temporarily hack to receive byte streams */ | |
2609 | break; | |
2610 | case USB_AUDIO_FORMAT_MPEG: | |
2611 | fp->format = SNDRV_PCM_FORMAT_MPEG; | |
2612 | break; | |
2613 | default: | |
2614 | snd_printd(KERN_INFO "%d:%u:%d : unknown format tag 0x%x is detected. processed as MPEG.\n", | |
27d10f56 | 2615 | chip->dev->devnum, fp->iface, fp->altsetting, format); |
1da177e4 LT |
2616 | fp->format = SNDRV_PCM_FORMAT_MPEG; |
2617 | break; | |
2618 | } | |
2619 | fp->channels = 1; | |
2620 | brate = combine_word(&fmt[4]); /* fmt[4,5] : wMaxBitRate (in kbps) */ | |
2621 | framesize = combine_word(&fmt[6]); /* fmt[6,7]: wSamplesPerFrame */ | |
2622 | snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); | |
2623 | fp->frame_size = framesize; | |
27d10f56 | 2624 | return parse_audio_format_rates(chip, fp, fmt, 8); /* fmt[8..] sample rates */ |
1da177e4 LT |
2625 | } |
2626 | ||
86e07d34 | 2627 | static int parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp, |
1da177e4 LT |
2628 | int format, unsigned char *fmt, int stream) |
2629 | { | |
2630 | int err; | |
2631 | ||
2632 | switch (fmt[3]) { | |
2633 | case USB_FORMAT_TYPE_I: | |
2634 | case USB_FORMAT_TYPE_III: | |
27d10f56 | 2635 | err = parse_audio_format_i(chip, fp, format, fmt); |
1da177e4 LT |
2636 | break; |
2637 | case USB_FORMAT_TYPE_II: | |
27d10f56 | 2638 | err = parse_audio_format_ii(chip, fp, format, fmt); |
1da177e4 LT |
2639 | break; |
2640 | default: | |
2641 | snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n", | |
27d10f56 | 2642 | chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]); |
1da177e4 LT |
2643 | return -1; |
2644 | } | |
2645 | fp->fmt_type = fmt[3]; | |
2646 | if (err < 0) | |
2647 | return err; | |
2648 | #if 1 | |
33159378 | 2649 | /* FIXME: temporary hack for extigy/audigy 2 nx/zs */ |
1da177e4 LT |
2650 | /* extigy apparently supports sample rates other than 48k |
2651 | * but not in ordinary way. so we enable only 48k atm. | |
2652 | */ | |
27d10f56 | 2653 | if (chip->usb_id == USB_ID(0x041e, 0x3000) || |
33159378 CL |
2654 | chip->usb_id == USB_ID(0x041e, 0x3020) || |
2655 | chip->usb_id == USB_ID(0x041e, 0x3061)) { | |
1da177e4 | 2656 | if (fmt[3] == USB_FORMAT_TYPE_I && |
8c1872dc CL |
2657 | fp->rates != SNDRV_PCM_RATE_48000 && |
2658 | fp->rates != SNDRV_PCM_RATE_96000) | |
b4d3f9d4 | 2659 | return -1; |
1da177e4 LT |
2660 | } |
2661 | #endif | |
2662 | return 0; | |
2663 | } | |
2664 | ||
e311334e TLM |
2665 | static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip, |
2666 | int iface, int altno); | |
86e07d34 | 2667 | static int parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no) |
1da177e4 LT |
2668 | { |
2669 | struct usb_device *dev; | |
2670 | struct usb_interface *iface; | |
2671 | struct usb_host_interface *alts; | |
2672 | struct usb_interface_descriptor *altsd; | |
2673 | int i, altno, err, stream; | |
2674 | int format; | |
2675 | struct audioformat *fp; | |
2676 | unsigned char *fmt, *csep; | |
b9d43bcd | 2677 | int num; |
1da177e4 LT |
2678 | |
2679 | dev = chip->dev; | |
2680 | ||
2681 | /* parse the interface's altsettings */ | |
2682 | iface = usb_ifnum_to_if(dev, iface_no); | |
b9d43bcd PM |
2683 | |
2684 | num = iface->num_altsetting; | |
2685 | ||
2686 | /* | |
2687 | * Dallas DS4201 workaround: It presents 5 altsettings, but the last | |
2688 | * one misses syncpipe, and does not produce any sound. | |
2689 | */ | |
2690 | if (chip->usb_id == USB_ID(0x04fa, 0x4201)) | |
2691 | num = 4; | |
2692 | ||
2693 | for (i = 0; i < num; i++) { | |
1da177e4 LT |
2694 | alts = &iface->altsetting[i]; |
2695 | altsd = get_iface_desc(alts); | |
2696 | /* skip invalid one */ | |
2697 | if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && | |
2698 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || | |
2699 | (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING && | |
2700 | altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) || | |
2701 | altsd->bNumEndpoints < 1 || | |
2702 | le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0) | |
2703 | continue; | |
2704 | /* must be isochronous */ | |
2705 | if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != | |
2706 | USB_ENDPOINT_XFER_ISOC) | |
2707 | continue; | |
2708 | /* check direction */ | |
2709 | stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ? | |
2710 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
2711 | altno = altsd->bAlternateSetting; | |
e311334e TLM |
2712 | |
2713 | /* audiophile usb: skip altsets incompatible with device_setup | |
2714 | */ | |
2715 | if (chip->usb_id == USB_ID(0x0763, 0x2003) && | |
2716 | audiophile_skip_setting_quirk(chip, iface_no, altno)) | |
2717 | continue; | |
1da177e4 LT |
2718 | |
2719 | /* get audio formats */ | |
2720 | fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, AS_GENERAL); | |
2721 | if (!fmt) { | |
2722 | snd_printk(KERN_ERR "%d:%u:%d : AS_GENERAL descriptor not found\n", | |
2723 | dev->devnum, iface_no, altno); | |
2724 | continue; | |
2725 | } | |
2726 | ||
2727 | if (fmt[0] < 7) { | |
2728 | snd_printk(KERN_ERR "%d:%u:%d : invalid AS_GENERAL desc\n", | |
2729 | dev->devnum, iface_no, altno); | |
2730 | continue; | |
2731 | } | |
2732 | ||
2733 | format = (fmt[6] << 8) | fmt[5]; /* remember the format value */ | |
2734 | ||
2735 | /* get format type */ | |
2736 | fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, FORMAT_TYPE); | |
2737 | if (!fmt) { | |
2738 | snd_printk(KERN_ERR "%d:%u:%d : no FORMAT_TYPE desc\n", | |
2739 | dev->devnum, iface_no, altno); | |
2740 | continue; | |
2741 | } | |
2742 | if (fmt[0] < 8) { | |
2743 | snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n", | |
2744 | dev->devnum, iface_no, altno); | |
2745 | continue; | |
2746 | } | |
2747 | ||
2748 | csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT); | |
2749 | /* Creamware Noah has this descriptor after the 2nd endpoint */ | |
2750 | if (!csep && altsd->bNumEndpoints >= 2) | |
2751 | csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); | |
2752 | if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) { | |
f8c75790 | 2753 | snd_printk(KERN_WARNING "%d:%u:%d : no or invalid" |
faf8d117 | 2754 | " class specific endpoint descriptor\n", |
1da177e4 | 2755 | dev->devnum, iface_no, altno); |
faf8d117 | 2756 | csep = NULL; |
1da177e4 LT |
2757 | } |
2758 | ||
59feddb2 | 2759 | fp = kzalloc(sizeof(*fp), GFP_KERNEL); |
1da177e4 LT |
2760 | if (! fp) { |
2761 | snd_printk(KERN_ERR "cannot malloc\n"); | |
2762 | return -ENOMEM; | |
2763 | } | |
2764 | ||
1da177e4 LT |
2765 | fp->iface = iface_no; |
2766 | fp->altsetting = altno; | |
2767 | fp->altset_idx = i; | |
2768 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
2769 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
1da177e4 | 2770 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); |
573567e0 CL |
2771 | if (snd_usb_get_speed(dev) == USB_SPEED_HIGH) |
2772 | fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) | |
2773 | * (fp->maxpacksize & 0x7ff); | |
faf8d117 | 2774 | fp->attributes = csep ? csep[3] : 0; |
1da177e4 LT |
2775 | |
2776 | /* some quirks for attributes here */ | |
2777 | ||
c3f93297 CL |
2778 | switch (chip->usb_id) { |
2779 | case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */ | |
1da177e4 LT |
2780 | /* Optoplay sets the sample rate attribute although |
2781 | * it seems not supporting it in fact. | |
2782 | */ | |
2783 | fp->attributes &= ~EP_CS_ATTR_SAMPLE_RATE; | |
c3f93297 CL |
2784 | break; |
2785 | case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */ | |
2786 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
1da177e4 LT |
2787 | /* doesn't set the sample rate attribute, but supports it */ |
2788 | fp->attributes |= EP_CS_ATTR_SAMPLE_RATE; | |
c3f93297 CL |
2789 | break; |
2790 | case USB_ID(0x047f, 0x0ca1): /* plantronics headset */ | |
2791 | case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is | |
2792 | an older model 77d:223) */ | |
1da177e4 LT |
2793 | /* |
2794 | * plantronics headset and Griffin iMic have set adaptive-in | |
2795 | * although it's really not... | |
2796 | */ | |
1da177e4 LT |
2797 | fp->ep_attr &= ~EP_ATTR_MASK; |
2798 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2799 | fp->ep_attr |= EP_ATTR_ADAPTIVE; | |
2800 | else | |
2801 | fp->ep_attr |= EP_ATTR_SYNC; | |
c3f93297 | 2802 | break; |
1da177e4 LT |
2803 | } |
2804 | ||
2805 | /* ok, let's parse further... */ | |
27d10f56 | 2806 | if (parse_audio_format(chip, fp, format, fmt, stream) < 0) { |
1da177e4 LT |
2807 | kfree(fp->rate_table); |
2808 | kfree(fp); | |
2809 | continue; | |
2810 | } | |
2811 | ||
e311334e | 2812 | snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint 0x%x\n", dev->devnum, iface_no, altno, fp->endpoint); |
1da177e4 LT |
2813 | err = add_audio_endpoint(chip, stream, fp); |
2814 | if (err < 0) { | |
2815 | kfree(fp->rate_table); | |
2816 | kfree(fp); | |
2817 | return err; | |
2818 | } | |
2819 | /* try to set the interface... */ | |
2820 | usb_set_interface(chip->dev, iface_no, altno); | |
2821 | init_usb_pitch(chip->dev, iface_no, alts, fp); | |
2822 | init_usb_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max); | |
2823 | } | |
2824 | return 0; | |
2825 | } | |
2826 | ||
2827 | ||
2828 | /* | |
2829 | * disconnect streams | |
2830 | * called from snd_usb_audio_disconnect() | |
2831 | */ | |
ee733397 | 2832 | static void snd_usb_stream_disconnect(struct list_head *head) |
1da177e4 LT |
2833 | { |
2834 | int idx; | |
86e07d34 TI |
2835 | struct snd_usb_stream *as; |
2836 | struct snd_usb_substream *subs; | |
1da177e4 | 2837 | |
86e07d34 | 2838 | as = list_entry(head, struct snd_usb_stream, list); |
1da177e4 LT |
2839 | for (idx = 0; idx < 2; idx++) { |
2840 | subs = &as->substream[idx]; | |
2841 | if (!subs->num_formats) | |
2842 | return; | |
2843 | release_substream_urbs(subs, 1); | |
2844 | subs->interface = -1; | |
2845 | } | |
2846 | } | |
2847 | ||
2848 | /* | |
2849 | * parse audio control descriptor and create pcm/midi streams | |
2850 | */ | |
86e07d34 | 2851 | static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) |
1da177e4 LT |
2852 | { |
2853 | struct usb_device *dev = chip->dev; | |
2854 | struct usb_host_interface *host_iface; | |
2855 | struct usb_interface *iface; | |
2856 | unsigned char *p1; | |
2857 | int i, j; | |
2858 | ||
2859 | /* find audiocontrol interface */ | |
2860 | host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0]; | |
2861 | if (!(p1 = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen, NULL, HEADER))) { | |
2862 | snd_printk(KERN_ERR "cannot find HEADER\n"); | |
2863 | return -EINVAL; | |
2864 | } | |
2865 | if (! p1[7] || p1[0] < 8 + p1[7]) { | |
2866 | snd_printk(KERN_ERR "invalid HEADER\n"); | |
2867 | return -EINVAL; | |
2868 | } | |
2869 | ||
2870 | /* | |
2871 | * parse all USB audio streaming interfaces | |
2872 | */ | |
2873 | for (i = 0; i < p1[7]; i++) { | |
2874 | struct usb_host_interface *alts; | |
2875 | struct usb_interface_descriptor *altsd; | |
2876 | j = p1[8 + i]; | |
2877 | iface = usb_ifnum_to_if(dev, j); | |
2878 | if (!iface) { | |
2879 | snd_printk(KERN_ERR "%d:%u:%d : does not exist\n", | |
2880 | dev->devnum, ctrlif, j); | |
2881 | continue; | |
2882 | } | |
2883 | if (usb_interface_claimed(iface)) { | |
2884 | snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n", dev->devnum, ctrlif, j); | |
2885 | continue; | |
2886 | } | |
2887 | alts = &iface->altsetting[0]; | |
2888 | altsd = get_iface_desc(alts); | |
2889 | if ((altsd->bInterfaceClass == USB_CLASS_AUDIO || | |
2890 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) && | |
2891 | altsd->bInterfaceSubClass == USB_SUBCLASS_MIDI_STREAMING) { | |
2892 | if (snd_usb_create_midi_interface(chip, iface, NULL) < 0) { | |
2893 | snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n", dev->devnum, ctrlif, j); | |
2894 | continue; | |
2895 | } | |
2896 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); | |
2897 | continue; | |
2898 | } | |
2899 | if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && | |
2900 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || | |
2901 | altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING) { | |
2902 | snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n", dev->devnum, ctrlif, j, altsd->bInterfaceClass); | |
2903 | /* skip non-supported classes */ | |
2904 | continue; | |
2905 | } | |
076639f6 CL |
2906 | if (snd_usb_get_speed(dev) == USB_SPEED_LOW) { |
2907 | snd_printk(KERN_ERR "low speed audio streaming not supported\n"); | |
2908 | continue; | |
2909 | } | |
1da177e4 LT |
2910 | if (! parse_audio_endpoints(chip, j)) { |
2911 | usb_set_interface(dev, j, 0); /* reset the current interface */ | |
2912 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); | |
2913 | } | |
2914 | } | |
2915 | ||
2916 | return 0; | |
2917 | } | |
2918 | ||
2919 | /* | |
2920 | * create a stream for an endpoint/altsetting without proper descriptors | |
2921 | */ | |
86e07d34 | 2922 | static int create_fixed_stream_quirk(struct snd_usb_audio *chip, |
1da177e4 | 2923 | struct usb_interface *iface, |
86e07d34 | 2924 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
2925 | { |
2926 | struct audioformat *fp; | |
2927 | struct usb_host_interface *alts; | |
2928 | int stream, err; | |
b4482a4b | 2929 | unsigned *rate_table = NULL; |
1da177e4 | 2930 | |
52978be6 | 2931 | fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL); |
1da177e4 | 2932 | if (! fp) { |
52978be6 | 2933 | snd_printk(KERN_ERR "cannot memdup\n"); |
1da177e4 LT |
2934 | return -ENOMEM; |
2935 | } | |
1da177e4 LT |
2936 | if (fp->nr_rates > 0) { |
2937 | rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL); | |
2938 | if (!rate_table) { | |
2939 | kfree(fp); | |
2940 | return -ENOMEM; | |
2941 | } | |
2942 | memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates); | |
2943 | fp->rate_table = rate_table; | |
2944 | } | |
2945 | ||
2946 | stream = (fp->endpoint & USB_DIR_IN) | |
2947 | ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
2948 | err = add_audio_endpoint(chip, stream, fp); | |
2949 | if (err < 0) { | |
2950 | kfree(fp); | |
2951 | kfree(rate_table); | |
2952 | return err; | |
2953 | } | |
2954 | if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber || | |
2955 | fp->altset_idx >= iface->num_altsetting) { | |
2956 | kfree(fp); | |
2957 | kfree(rate_table); | |
2958 | return -EINVAL; | |
2959 | } | |
2960 | alts = &iface->altsetting[fp->altset_idx]; | |
2961 | usb_set_interface(chip->dev, fp->iface, 0); | |
2962 | init_usb_pitch(chip->dev, fp->iface, alts, fp); | |
2963 | init_usb_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max); | |
2964 | return 0; | |
2965 | } | |
2966 | ||
2967 | /* | |
2968 | * create a stream for an interface with proper descriptors | |
2969 | */ | |
86e07d34 | 2970 | static int create_standard_audio_quirk(struct snd_usb_audio *chip, |
d1bda045 | 2971 | struct usb_interface *iface, |
86e07d34 | 2972 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
2973 | { |
2974 | struct usb_host_interface *alts; | |
2975 | struct usb_interface_descriptor *altsd; | |
2976 | int err; | |
2977 | ||
2978 | alts = &iface->altsetting[0]; | |
2979 | altsd = get_iface_desc(alts); | |
d1bda045 | 2980 | err = parse_audio_endpoints(chip, altsd->bInterfaceNumber); |
1da177e4 LT |
2981 | if (err < 0) { |
2982 | snd_printk(KERN_ERR "cannot setup if %d: error %d\n", | |
2983 | altsd->bInterfaceNumber, err); | |
2984 | return err; | |
2985 | } | |
d1bda045 CL |
2986 | /* reset the current interface */ |
2987 | usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0); | |
1da177e4 LT |
2988 | return 0; |
2989 | } | |
2990 | ||
2991 | /* | |
2992 | * Create a stream for an Edirol UA-700/UA-25 interface. The only way | |
2993 | * to detect the sample rate is by looking at wMaxPacketSize. | |
2994 | */ | |
86e07d34 | 2995 | static int create_ua700_ua25_quirk(struct snd_usb_audio *chip, |
854af957 | 2996 | struct usb_interface *iface, |
86e07d34 | 2997 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
2998 | { |
2999 | static const struct audioformat ua_format = { | |
3000 | .format = SNDRV_PCM_FORMAT_S24_3LE, | |
3001 | .channels = 2, | |
3002 | .fmt_type = USB_FORMAT_TYPE_I, | |
3003 | .altsetting = 1, | |
3004 | .altset_idx = 1, | |
3005 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
3006 | }; | |
3007 | struct usb_host_interface *alts; | |
3008 | struct usb_interface_descriptor *altsd; | |
3009 | struct audioformat *fp; | |
3010 | int stream, err; | |
3011 | ||
3012 | /* both PCM and MIDI interfaces have 2 altsettings */ | |
3013 | if (iface->num_altsetting != 2) | |
3014 | return -ENXIO; | |
3015 | alts = &iface->altsetting[1]; | |
3016 | altsd = get_iface_desc(alts); | |
3017 | ||
3018 | if (altsd->bNumEndpoints == 2) { | |
86e07d34 | 3019 | static const struct snd_usb_midi_endpoint_info ua700_ep = { |
1da177e4 LT |
3020 | .out_cables = 0x0003, |
3021 | .in_cables = 0x0003 | |
3022 | }; | |
86e07d34 | 3023 | static const struct snd_usb_audio_quirk ua700_quirk = { |
1da177e4 LT |
3024 | .type = QUIRK_MIDI_FIXED_ENDPOINT, |
3025 | .data = &ua700_ep | |
3026 | }; | |
86e07d34 | 3027 | static const struct snd_usb_midi_endpoint_info ua25_ep = { |
1da177e4 LT |
3028 | .out_cables = 0x0001, |
3029 | .in_cables = 0x0001 | |
3030 | }; | |
86e07d34 | 3031 | static const struct snd_usb_audio_quirk ua25_quirk = { |
1da177e4 LT |
3032 | .type = QUIRK_MIDI_FIXED_ENDPOINT, |
3033 | .data = &ua25_ep | |
3034 | }; | |
27d10f56 | 3035 | if (chip->usb_id == USB_ID(0x0582, 0x002b)) |
1da177e4 LT |
3036 | return snd_usb_create_midi_interface(chip, iface, |
3037 | &ua700_quirk); | |
3038 | else | |
3039 | return snd_usb_create_midi_interface(chip, iface, | |
3040 | &ua25_quirk); | |
3041 | } | |
3042 | ||
3043 | if (altsd->bNumEndpoints != 1) | |
3044 | return -ENXIO; | |
3045 | ||
3046 | fp = kmalloc(sizeof(*fp), GFP_KERNEL); | |
3047 | if (!fp) | |
3048 | return -ENOMEM; | |
3049 | memcpy(fp, &ua_format, sizeof(*fp)); | |
3050 | ||
3051 | fp->iface = altsd->bInterfaceNumber; | |
3052 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
3053 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
3054 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); | |
3055 | ||
3056 | switch (fp->maxpacksize) { | |
3057 | case 0x120: | |
3058 | fp->rate_max = fp->rate_min = 44100; | |
3059 | break; | |
3060 | case 0x138: | |
3061 | case 0x140: | |
3062 | fp->rate_max = fp->rate_min = 48000; | |
3063 | break; | |
3064 | case 0x258: | |
3065 | case 0x260: | |
3066 | fp->rate_max = fp->rate_min = 96000; | |
3067 | break; | |
3068 | default: | |
3069 | snd_printk(KERN_ERR "unknown sample rate\n"); | |
3070 | kfree(fp); | |
3071 | return -ENXIO; | |
3072 | } | |
3073 | ||
3074 | stream = (fp->endpoint & USB_DIR_IN) | |
3075 | ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
3076 | err = add_audio_endpoint(chip, stream, fp); | |
3077 | if (err < 0) { | |
3078 | kfree(fp); | |
3079 | return err; | |
3080 | } | |
3081 | usb_set_interface(chip->dev, fp->iface, 0); | |
3082 | return 0; | |
3083 | } | |
3084 | ||
3085 | /* | |
3086 | * Create a stream for an Edirol UA-1000 interface. | |
3087 | */ | |
86e07d34 | 3088 | static int create_ua1000_quirk(struct snd_usb_audio *chip, |
854af957 | 3089 | struct usb_interface *iface, |
86e07d34 | 3090 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
3091 | { |
3092 | static const struct audioformat ua1000_format = { | |
3093 | .format = SNDRV_PCM_FORMAT_S32_LE, | |
3094 | .fmt_type = USB_FORMAT_TYPE_I, | |
3095 | .altsetting = 1, | |
3096 | .altset_idx = 1, | |
3097 | .attributes = 0, | |
3098 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
3099 | }; | |
3100 | struct usb_host_interface *alts; | |
3101 | struct usb_interface_descriptor *altsd; | |
3102 | struct audioformat *fp; | |
3103 | int stream, err; | |
3104 | ||
3105 | if (iface->num_altsetting != 2) | |
3106 | return -ENXIO; | |
3107 | alts = &iface->altsetting[1]; | |
3108 | altsd = get_iface_desc(alts); | |
c4a87ef4 | 3109 | if (alts->extralen != 11 || alts->extra[1] != USB_DT_CS_INTERFACE || |
1da177e4 LT |
3110 | altsd->bNumEndpoints != 1) |
3111 | return -ENXIO; | |
3112 | ||
52978be6 | 3113 | fp = kmemdup(&ua1000_format, sizeof(*fp), GFP_KERNEL); |
1da177e4 LT |
3114 | if (!fp) |
3115 | return -ENOMEM; | |
1da177e4 LT |
3116 | |
3117 | fp->channels = alts->extra[4]; | |
3118 | fp->iface = altsd->bInterfaceNumber; | |
3119 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
3120 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
3121 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); | |
3122 | fp->rate_max = fp->rate_min = combine_triple(&alts->extra[8]); | |
3123 | ||
3124 | stream = (fp->endpoint & USB_DIR_IN) | |
3125 | ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
3126 | err = add_audio_endpoint(chip, stream, fp); | |
3127 | if (err < 0) { | |
3128 | kfree(fp); | |
3129 | return err; | |
3130 | } | |
3131 | /* FIXME: playback must be synchronized to capture */ | |
3132 | usb_set_interface(chip->dev, fp->iface, 0); | |
3133 | return 0; | |
3134 | } | |
3135 | ||
d0b0fac1 BF |
3136 | /* |
3137 | * Create a stream for an Edirol UA-101 interface. | |
3138 | * Copy, paste and modify from Edirol UA-1000 | |
3139 | */ | |
3140 | static int create_ua101_quirk(struct snd_usb_audio *chip, | |
3141 | struct usb_interface *iface, | |
3142 | const struct snd_usb_audio_quirk *quirk) | |
3143 | { | |
3144 | static const struct audioformat ua101_format = { | |
3145 | .format = SNDRV_PCM_FORMAT_S32_LE, | |
3146 | .fmt_type = USB_FORMAT_TYPE_I, | |
3147 | .altsetting = 1, | |
3148 | .altset_idx = 1, | |
3149 | .attributes = 0, | |
3150 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
3151 | }; | |
3152 | struct usb_host_interface *alts; | |
3153 | struct usb_interface_descriptor *altsd; | |
3154 | struct audioformat *fp; | |
3155 | int stream, err; | |
3156 | ||
3157 | if (iface->num_altsetting != 2) | |
3158 | return -ENXIO; | |
3159 | alts = &iface->altsetting[1]; | |
3160 | altsd = get_iface_desc(alts); | |
3161 | if (alts->extralen != 18 || alts->extra[1] != USB_DT_CS_INTERFACE || | |
3162 | altsd->bNumEndpoints != 1) | |
3163 | return -ENXIO; | |
3164 | ||
3165 | fp = kmemdup(&ua101_format, sizeof(*fp), GFP_KERNEL); | |
3166 | if (!fp) | |
3167 | return -ENOMEM; | |
3168 | ||
3169 | fp->channels = alts->extra[11]; | |
3170 | fp->iface = altsd->bInterfaceNumber; | |
3171 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
3172 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
3173 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); | |
3174 | fp->rate_max = fp->rate_min = combine_triple(&alts->extra[15]); | |
3175 | ||
3176 | stream = (fp->endpoint & USB_DIR_IN) | |
3177 | ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
3178 | err = add_audio_endpoint(chip, stream, fp); | |
3179 | if (err < 0) { | |
3180 | kfree(fp); | |
3181 | return err; | |
3182 | } | |
3183 | /* FIXME: playback must be synchronized to capture */ | |
3184 | usb_set_interface(chip->dev, fp->iface, 0); | |
3185 | return 0; | |
3186 | } | |
3187 | ||
86e07d34 | 3188 | static int snd_usb_create_quirk(struct snd_usb_audio *chip, |
1da177e4 | 3189 | struct usb_interface *iface, |
86e07d34 | 3190 | const struct snd_usb_audio_quirk *quirk); |
1da177e4 LT |
3191 | |
3192 | /* | |
3193 | * handle the quirks for the contained interfaces | |
3194 | */ | |
86e07d34 | 3195 | static int create_composite_quirk(struct snd_usb_audio *chip, |
1da177e4 | 3196 | struct usb_interface *iface, |
86e07d34 | 3197 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 LT |
3198 | { |
3199 | int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber; | |
3200 | int err; | |
3201 | ||
3202 | for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) { | |
3203 | iface = usb_ifnum_to_if(chip->dev, quirk->ifnum); | |
3204 | if (!iface) | |
3205 | continue; | |
3206 | if (quirk->ifnum != probed_ifnum && | |
3207 | usb_interface_claimed(iface)) | |
3208 | continue; | |
3209 | err = snd_usb_create_quirk(chip, iface, quirk); | |
3210 | if (err < 0) | |
3211 | return err; | |
3212 | if (quirk->ifnum != probed_ifnum) | |
3213 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); | |
3214 | } | |
3215 | return 0; | |
3216 | } | |
3217 | ||
86e07d34 | 3218 | static int ignore_interface_quirk(struct snd_usb_audio *chip, |
854af957 | 3219 | struct usb_interface *iface, |
86e07d34 | 3220 | const struct snd_usb_audio_quirk *quirk) |
854af957 CL |
3221 | { |
3222 | return 0; | |
3223 | } | |
3224 | ||
1da177e4 LT |
3225 | |
3226 | /* | |
3227 | * boot quirks | |
3228 | */ | |
3229 | ||
3230 | #define EXTIGY_FIRMWARE_SIZE_OLD 794 | |
3231 | #define EXTIGY_FIRMWARE_SIZE_NEW 483 | |
3232 | ||
3233 | static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf) | |
3234 | { | |
3235 | struct usb_host_config *config = dev->actconfig; | |
3236 | int err; | |
3237 | ||
3238 | if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD || | |
3239 | le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) { | |
3240 | snd_printdd("sending Extigy boot sequence...\n"); | |
3241 | /* Send message to force it to reconnect with full interface. */ | |
3242 | err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0), | |
3243 | 0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000); | |
3244 | if (err < 0) snd_printdd("error sending boot message: %d\n", err); | |
3245 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, | |
3246 | &dev->descriptor, sizeof(dev->descriptor)); | |
3247 | config = dev->actconfig; | |
3248 | if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err); | |
3249 | err = usb_reset_configuration(dev); | |
3250 | if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err); | |
3251 | snd_printdd("extigy_boot: new boot length = %d\n", | |
3252 | le16_to_cpu(get_cfg_desc(config)->wTotalLength)); | |
3253 | return -ENODEV; /* quit this anyway */ | |
3254 | } | |
3255 | return 0; | |
3256 | } | |
3257 | ||
3a2f0856 CL |
3258 | static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev) |
3259 | { | |
3a2f0856 CL |
3260 | u8 buf = 1; |
3261 | ||
3262 | snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a, | |
3263 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER, | |
3264 | 0, 0, &buf, 1, 1000); | |
3265 | if (buf == 0) { | |
3266 | snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29, | |
3267 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, | |
3268 | 1, 2000, NULL, 0, 1000); | |
3269 | return -ENODEV; | |
3270 | } | |
3a2f0856 CL |
3271 | return 0; |
3272 | } | |
3273 | ||
e217e30c SR |
3274 | /* |
3275 | * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely | |
3276 | * documented in the device's data sheet. | |
3277 | */ | |
3278 | static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value) | |
3279 | { | |
3280 | u8 buf[4]; | |
3281 | buf[0] = 0x20; | |
3282 | buf[1] = value & 0xff; | |
3283 | buf[2] = (value >> 8) & 0xff; | |
3284 | buf[3] = reg; | |
3285 | return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION, | |
3286 | USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, | |
3287 | 0, 0, &buf, 4, 1000); | |
3288 | } | |
3289 | ||
3290 | static int snd_usb_cm106_boot_quirk(struct usb_device *dev) | |
3291 | { | |
3292 | /* | |
3293 | * Enable line-out driver mode, set headphone source to front | |
3294 | * channels, enable stereo mic. | |
3295 | */ | |
3296 | return snd_usb_cm106_write_int_reg(dev, 2, 0x8004); | |
3297 | } | |
3298 | ||
3299 | ||
e311334e TLM |
3300 | /* |
3301 | * Setup quirks | |
3302 | */ | |
3303 | #define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */ | |
3304 | #define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */ | |
3305 | #define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */ | |
3306 | #define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */ | |
3307 | #define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */ | |
3308 | #define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */ | |
3309 | #define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */ | |
3310 | #define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */ | |
3311 | #define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */ | |
3312 | #define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */ | |
3313 | ||
3314 | static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip, | |
3315 | int iface, int altno) | |
3316 | { | |
f8c78b82 TLM |
3317 | /* Reset ALL ifaces to 0 altsetting. |
3318 | * Call it for every possible altsetting of every interface. | |
3319 | */ | |
3320 | usb_set_interface(chip->dev, iface, 0); | |
3321 | ||
e311334e TLM |
3322 | if (device_setup[chip->index] & AUDIOPHILE_SET) { |
3323 | if ((device_setup[chip->index] & AUDIOPHILE_SET_DTS) | |
3324 | && altno != 6) | |
3325 | return 1; /* skip this altsetting */ | |
3326 | if ((device_setup[chip->index] & AUDIOPHILE_SET_96K) | |
3327 | && altno != 1) | |
3328 | return 1; /* skip this altsetting */ | |
3329 | if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == | |
3330 | AUDIOPHILE_SET_24B_48K_DI && altno != 2) | |
3331 | return 1; /* skip this altsetting */ | |
3332 | if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == | |
3333 | AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3) | |
3334 | return 1; /* skip this altsetting */ | |
3335 | if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == | |
3336 | AUDIOPHILE_SET_16B_48K_DI && altno != 4) | |
3337 | return 1; /* skip this altsetting */ | |
3338 | if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == | |
3339 | AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5) | |
3340 | return 1; /* skip this altsetting */ | |
3341 | } | |
3342 | return 0; /* keep this altsetting */ | |
3343 | } | |
1da177e4 LT |
3344 | |
3345 | /* | |
3346 | * audio-interface quirks | |
3347 | * | |
3348 | * returns zero if no standard audio/MIDI parsing is needed. | |
3349 | * returns a postive value if standard audio/midi interfaces are parsed | |
3350 | * after this. | |
3351 | * returns a negative value at error. | |
3352 | */ | |
86e07d34 | 3353 | static int snd_usb_create_quirk(struct snd_usb_audio *chip, |
1da177e4 | 3354 | struct usb_interface *iface, |
86e07d34 | 3355 | const struct snd_usb_audio_quirk *quirk) |
1da177e4 | 3356 | { |
86e07d34 TI |
3357 | typedef int (*quirk_func_t)(struct snd_usb_audio *, struct usb_interface *, |
3358 | const struct snd_usb_audio_quirk *); | |
854af957 CL |
3359 | static const quirk_func_t quirk_funcs[] = { |
3360 | [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk, | |
3361 | [QUIRK_COMPOSITE] = create_composite_quirk, | |
3362 | [QUIRK_MIDI_STANDARD_INTERFACE] = snd_usb_create_midi_interface, | |
3363 | [QUIRK_MIDI_FIXED_ENDPOINT] = snd_usb_create_midi_interface, | |
3364 | [QUIRK_MIDI_YAMAHA] = snd_usb_create_midi_interface, | |
3365 | [QUIRK_MIDI_MIDIMAN] = snd_usb_create_midi_interface, | |
3366 | [QUIRK_MIDI_NOVATION] = snd_usb_create_midi_interface, | |
3367 | [QUIRK_MIDI_RAW] = snd_usb_create_midi_interface, | |
3368 | [QUIRK_MIDI_EMAGIC] = snd_usb_create_midi_interface, | |
cc7a59bd | 3369 | [QUIRK_MIDI_CME] = snd_usb_create_midi_interface, |
d1bda045 | 3370 | [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk, |
854af957 CL |
3371 | [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk, |
3372 | [QUIRK_AUDIO_EDIROL_UA700_UA25] = create_ua700_ua25_quirk, | |
3373 | [QUIRK_AUDIO_EDIROL_UA1000] = create_ua1000_quirk, | |
d0b0fac1 | 3374 | [QUIRK_AUDIO_EDIROL_UA101] = create_ua101_quirk, |
854af957 CL |
3375 | }; |
3376 | ||
3377 | if (quirk->type < QUIRK_TYPE_COUNT) { | |
3378 | return quirk_funcs[quirk->type](chip, iface, quirk); | |
3379 | } else { | |
1da177e4 LT |
3380 | snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); |
3381 | return -ENXIO; | |
3382 | } | |
3383 | } | |
3384 | ||
3385 | ||
3386 | /* | |
3387 | * common proc files to show the usb device info | |
3388 | */ | |
86e07d34 | 3389 | static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
1da177e4 | 3390 | { |
86e07d34 | 3391 | struct snd_usb_audio *chip = entry->private_data; |
07f51a72 | 3392 | if (!chip->shutdown) |
1da177e4 LT |
3393 | snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum); |
3394 | } | |
3395 | ||
86e07d34 | 3396 | static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
1da177e4 | 3397 | { |
86e07d34 | 3398 | struct snd_usb_audio *chip = entry->private_data; |
07f51a72 | 3399 | if (!chip->shutdown) |
1da177e4 | 3400 | snd_iprintf(buffer, "%04x:%04x\n", |
27d10f56 CL |
3401 | USB_ID_VENDOR(chip->usb_id), |
3402 | USB_ID_PRODUCT(chip->usb_id)); | |
1da177e4 LT |
3403 | } |
3404 | ||
86e07d34 | 3405 | static void snd_usb_audio_create_proc(struct snd_usb_audio *chip) |
1da177e4 | 3406 | { |
86e07d34 | 3407 | struct snd_info_entry *entry; |
07f51a72 | 3408 | if (!snd_card_proc_new(chip->card, "usbbus", &entry)) |
bf850204 | 3409 | snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read); |
07f51a72 | 3410 | if (!snd_card_proc_new(chip->card, "usbid", &entry)) |
bf850204 | 3411 | snd_info_set_text_ops(entry, chip, proc_audio_usbid_read); |
1da177e4 LT |
3412 | } |
3413 | ||
3414 | /* | |
3415 | * free the chip instance | |
3416 | * | |
3417 | * here we have to do not much, since pcm and controls are already freed | |
3418 | * | |
3419 | */ | |
3420 | ||
86e07d34 | 3421 | static int snd_usb_audio_free(struct snd_usb_audio *chip) |
1da177e4 LT |
3422 | { |
3423 | kfree(chip); | |
3424 | return 0; | |
3425 | } | |
3426 | ||
86e07d34 | 3427 | static int snd_usb_audio_dev_free(struct snd_device *device) |
1da177e4 | 3428 | { |
86e07d34 | 3429 | struct snd_usb_audio *chip = device->device_data; |
1da177e4 LT |
3430 | return snd_usb_audio_free(chip); |
3431 | } | |
3432 | ||
3433 | ||
3434 | /* | |
3435 | * create a chip instance and set its names. | |
3436 | */ | |
3437 | static int snd_usb_audio_create(struct usb_device *dev, int idx, | |
86e07d34 TI |
3438 | const struct snd_usb_audio_quirk *quirk, |
3439 | struct snd_usb_audio **rchip) | |
1da177e4 | 3440 | { |
86e07d34 TI |
3441 | struct snd_card *card; |
3442 | struct snd_usb_audio *chip; | |
1da177e4 LT |
3443 | int err, len; |
3444 | char component[14]; | |
86e07d34 | 3445 | static struct snd_device_ops ops = { |
1da177e4 LT |
3446 | .dev_free = snd_usb_audio_dev_free, |
3447 | }; | |
3448 | ||
3449 | *rchip = NULL; | |
3450 | ||
076639f6 CL |
3451 | if (snd_usb_get_speed(dev) != USB_SPEED_LOW && |
3452 | snd_usb_get_speed(dev) != USB_SPEED_FULL && | |
1da177e4 LT |
3453 | snd_usb_get_speed(dev) != USB_SPEED_HIGH) { |
3454 | snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev)); | |
3455 | return -ENXIO; | |
3456 | } | |
3457 | ||
3458 | card = snd_card_new(index[idx], id[idx], THIS_MODULE, 0); | |
3459 | if (card == NULL) { | |
3460 | snd_printk(KERN_ERR "cannot create card instance %d\n", idx); | |
3461 | return -ENOMEM; | |
3462 | } | |
3463 | ||
561b220a | 3464 | chip = kzalloc(sizeof(*chip), GFP_KERNEL); |
1da177e4 LT |
3465 | if (! chip) { |
3466 | snd_card_free(card); | |
3467 | return -ENOMEM; | |
3468 | } | |
3469 | ||
3470 | chip->index = idx; | |
3471 | chip->dev = dev; | |
3472 | chip->card = card; | |
27d10f56 CL |
3473 | chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), |
3474 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 LT |
3475 | INIT_LIST_HEAD(&chip->pcm_list); |
3476 | INIT_LIST_HEAD(&chip->midi_list); | |
84957a8a | 3477 | INIT_LIST_HEAD(&chip->mixer_list); |
1da177e4 LT |
3478 | |
3479 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { | |
3480 | snd_usb_audio_free(chip); | |
3481 | snd_card_free(card); | |
3482 | return err; | |
3483 | } | |
3484 | ||
3485 | strcpy(card->driver, "USB-Audio"); | |
3486 | sprintf(component, "USB%04x:%04x", | |
27d10f56 | 3487 | USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id)); |
1da177e4 LT |
3488 | snd_component_add(card, component); |
3489 | ||
3490 | /* retrieve the device string as shortname */ | |
3491 | if (quirk && quirk->product_name) { | |
3492 | strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname)); | |
3493 | } else { | |
3494 | if (!dev->descriptor.iProduct || | |
3495 | usb_string(dev, dev->descriptor.iProduct, | |
3496 | card->shortname, sizeof(card->shortname)) <= 0) { | |
3497 | /* no name available from anywhere, so use ID */ | |
3498 | sprintf(card->shortname, "USB Device %#04x:%#04x", | |
27d10f56 CL |
3499 | USB_ID_VENDOR(chip->usb_id), |
3500 | USB_ID_PRODUCT(chip->usb_id)); | |
1da177e4 LT |
3501 | } |
3502 | } | |
3503 | ||
3504 | /* retrieve the vendor and device strings as longname */ | |
3505 | if (quirk && quirk->vendor_name) { | |
3506 | len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname)); | |
3507 | } else { | |
3508 | if (dev->descriptor.iManufacturer) | |
3509 | len = usb_string(dev, dev->descriptor.iManufacturer, | |
3510 | card->longname, sizeof(card->longname)); | |
3511 | else | |
3512 | len = 0; | |
3513 | /* we don't really care if there isn't any vendor string */ | |
3514 | } | |
3515 | if (len > 0) | |
3516 | strlcat(card->longname, " ", sizeof(card->longname)); | |
3517 | ||
3518 | strlcat(card->longname, card->shortname, sizeof(card->longname)); | |
3519 | ||
3520 | len = strlcat(card->longname, " at ", sizeof(card->longname)); | |
3521 | ||
3522 | if (len < sizeof(card->longname)) | |
3523 | usb_make_path(dev, card->longname + len, sizeof(card->longname) - len); | |
3524 | ||
3525 | strlcat(card->longname, | |
076639f6 CL |
3526 | snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" : |
3527 | snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" : | |
3528 | ", high speed", | |
1da177e4 LT |
3529 | sizeof(card->longname)); |
3530 | ||
3531 | snd_usb_audio_create_proc(chip); | |
3532 | ||
1da177e4 LT |
3533 | *rchip = chip; |
3534 | return 0; | |
3535 | } | |
3536 | ||
3537 | ||
3538 | /* | |
3539 | * probe the active usb device | |
3540 | * | |
3541 | * note that this can be called multiple times per a device, when it | |
3542 | * includes multiple audio control interfaces. | |
3543 | * | |
3544 | * thus we check the usb device pointer and creates the card instance | |
3545 | * only at the first time. the successive calls of this function will | |
3546 | * append the pcm interface to the corresponding card. | |
3547 | */ | |
3548 | static void *snd_usb_audio_probe(struct usb_device *dev, | |
3549 | struct usb_interface *intf, | |
3550 | const struct usb_device_id *usb_id) | |
3551 | { | |
86e07d34 | 3552 | const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info; |
1da177e4 | 3553 | int i, err; |
86e07d34 | 3554 | struct snd_usb_audio *chip; |
1da177e4 LT |
3555 | struct usb_host_interface *alts; |
3556 | int ifnum; | |
27d10f56 | 3557 | u32 id; |
1da177e4 LT |
3558 | |
3559 | alts = &intf->altsetting[0]; | |
3560 | ifnum = get_iface_desc(alts)->bInterfaceNumber; | |
27d10f56 CL |
3561 | id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), |
3562 | le16_to_cpu(dev->descriptor.idProduct)); | |
1da177e4 LT |
3563 | |
3564 | if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum) | |
3565 | goto __err_val; | |
3566 | ||
3567 | /* SB Extigy needs special boot-up sequence */ | |
3568 | /* if more models come, this will go to the quirk list. */ | |
27d10f56 | 3569 | if (id == USB_ID(0x041e, 0x3000)) { |
1da177e4 LT |
3570 | if (snd_usb_extigy_boot_quirk(dev, intf) < 0) |
3571 | goto __err_val; | |
1da177e4 | 3572 | } |
3a2f0856 CL |
3573 | /* SB Audigy 2 NX needs its own boot-up magic, too */ |
3574 | if (id == USB_ID(0x041e, 0x3020)) { | |
3575 | if (snd_usb_audigy2nx_boot_quirk(dev) < 0) | |
3576 | goto __err_val; | |
3577 | } | |
1da177e4 | 3578 | |
e217e30c SR |
3579 | /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */ |
3580 | if (id == USB_ID(0x10f5, 0x0200)) { | |
3581 | if (snd_usb_cm106_boot_quirk(dev) < 0) | |
3582 | goto __err_val; | |
3583 | } | |
3584 | ||
1da177e4 LT |
3585 | /* |
3586 | * found a config. now register to ALSA | |
3587 | */ | |
3588 | ||
3589 | /* check whether it's already registered */ | |
3590 | chip = NULL; | |
12aa7579 | 3591 | mutex_lock(®ister_mutex); |
1da177e4 LT |
3592 | for (i = 0; i < SNDRV_CARDS; i++) { |
3593 | if (usb_chip[i] && usb_chip[i]->dev == dev) { | |
3594 | if (usb_chip[i]->shutdown) { | |
3595 | snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n"); | |
3596 | goto __error; | |
3597 | } | |
3598 | chip = usb_chip[i]; | |
3599 | break; | |
3600 | } | |
3601 | } | |
3602 | if (! chip) { | |
3603 | /* it's a fresh one. | |
3604 | * now look for an empty slot and create a new card instance | |
3605 | */ | |
1da177e4 LT |
3606 | for (i = 0; i < SNDRV_CARDS; i++) |
3607 | if (enable[i] && ! usb_chip[i] && | |
27d10f56 CL |
3608 | (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) && |
3609 | (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) { | |
1da177e4 LT |
3610 | if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) { |
3611 | goto __error; | |
3612 | } | |
1dcd3ec4 | 3613 | snd_card_set_dev(chip->card, &intf->dev); |
1da177e4 LT |
3614 | break; |
3615 | } | |
07f51a72 PM |
3616 | if (!chip) { |
3617 | printk(KERN_ERR "no available usb audio device\n"); | |
1da177e4 LT |
3618 | goto __error; |
3619 | } | |
3620 | } | |
3621 | ||
3622 | err = 1; /* continue */ | |
3623 | if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) { | |
3624 | /* need some special handlings */ | |
3625 | if ((err = snd_usb_create_quirk(chip, intf, quirk)) < 0) | |
3626 | goto __error; | |
3627 | } | |
3628 | ||
3629 | if (err > 0) { | |
3630 | /* create normal USB audio interfaces */ | |
3631 | if (snd_usb_create_streams(chip, ifnum) < 0 || | |
3632 | snd_usb_create_mixer(chip, ifnum) < 0) { | |
3633 | goto __error; | |
3634 | } | |
3635 | } | |
3636 | ||
3637 | /* we are allowed to call snd_card_register() many times */ | |
3638 | if (snd_card_register(chip->card) < 0) { | |
3639 | goto __error; | |
3640 | } | |
3641 | ||
3642 | usb_chip[chip->index] = chip; | |
3643 | chip->num_interfaces++; | |
12aa7579 | 3644 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
3645 | return chip; |
3646 | ||
3647 | __error: | |
3648 | if (chip && !chip->num_interfaces) | |
3649 | snd_card_free(chip->card); | |
12aa7579 | 3650 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
3651 | __err_val: |
3652 | return NULL; | |
3653 | } | |
3654 | ||
3655 | /* | |
3656 | * we need to take care of counter, since disconnection can be called also | |
3657 | * many times as well as usb_audio_probe(). | |
3658 | */ | |
3659 | static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr) | |
3660 | { | |
86e07d34 TI |
3661 | struct snd_usb_audio *chip; |
3662 | struct snd_card *card; | |
1da177e4 LT |
3663 | struct list_head *p; |
3664 | ||
3665 | if (ptr == (void *)-1L) | |
3666 | return; | |
3667 | ||
3668 | chip = ptr; | |
3669 | card = chip->card; | |
12aa7579 | 3670 | mutex_lock(®ister_mutex); |
1da177e4 LT |
3671 | chip->shutdown = 1; |
3672 | chip->num_interfaces--; | |
3673 | if (chip->num_interfaces <= 0) { | |
3674 | snd_card_disconnect(card); | |
3675 | /* release the pcm resources */ | |
3676 | list_for_each(p, &chip->pcm_list) { | |
ee733397 | 3677 | snd_usb_stream_disconnect(p); |
1da177e4 LT |
3678 | } |
3679 | /* release the midi resources */ | |
3680 | list_for_each(p, &chip->midi_list) { | |
ee733397 | 3681 | snd_usbmidi_disconnect(p); |
1da177e4 | 3682 | } |
84957a8a CL |
3683 | /* release mixer resources */ |
3684 | list_for_each(p, &chip->mixer_list) { | |
3685 | snd_usb_mixer_disconnect(p); | |
3686 | } | |
9eb70e68 | 3687 | usb_chip[chip->index] = NULL; |
12aa7579 | 3688 | mutex_unlock(®ister_mutex); |
c461482c | 3689 | snd_card_free_when_closed(card); |
1da177e4 | 3690 | } else { |
12aa7579 | 3691 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
3692 | } |
3693 | } | |
3694 | ||
3695 | /* | |
3696 | * new 2.5 USB kernel API | |
3697 | */ | |
3698 | static int usb_audio_probe(struct usb_interface *intf, | |
3699 | const struct usb_device_id *id) | |
3700 | { | |
3701 | void *chip; | |
3702 | chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id); | |
3703 | if (chip) { | |
3704 | dev_set_drvdata(&intf->dev, chip); | |
3705 | return 0; | |
3706 | } else | |
3707 | return -EIO; | |
3708 | } | |
3709 | ||
3710 | static void usb_audio_disconnect(struct usb_interface *intf) | |
3711 | { | |
3712 | snd_usb_audio_disconnect(interface_to_usbdev(intf), | |
3713 | dev_get_drvdata(&intf->dev)); | |
3714 | } | |
3715 | ||
93521d27 | 3716 | #ifdef CONFIG_PM |
f85bf29c ON |
3717 | static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) |
3718 | { | |
3719 | struct snd_usb_audio *chip = dev_get_drvdata(&intf->dev); | |
3720 | struct list_head *p; | |
3721 | struct snd_usb_stream *as; | |
3722 | ||
3723 | if (chip == (void *)-1L) | |
3724 | return 0; | |
3725 | ||
3726 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); | |
3727 | if (!chip->num_suspended_intf++) { | |
3728 | list_for_each(p, &chip->pcm_list) { | |
3729 | as = list_entry(p, struct snd_usb_stream, list); | |
3730 | snd_pcm_suspend_all(as->pcm); | |
3731 | } | |
3732 | } | |
3733 | ||
3734 | return 0; | |
3735 | } | |
3736 | ||
3737 | static int usb_audio_resume(struct usb_interface *intf) | |
3738 | { | |
3739 | struct snd_usb_audio *chip = dev_get_drvdata(&intf->dev); | |
3740 | ||
3741 | if (chip == (void *)-1L) | |
3742 | return 0; | |
3743 | if (--chip->num_suspended_intf) | |
3744 | return 0; | |
3745 | /* | |
3746 | * ALSA leaves material resumption to user space | |
3747 | * we just notify | |
3748 | */ | |
3749 | ||
3750 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); | |
3751 | ||
3752 | return 0; | |
3753 | } | |
93521d27 | 3754 | #endif /* CONFIG_PM */ |
1da177e4 LT |
3755 | |
3756 | static int __init snd_usb_audio_init(void) | |
3757 | { | |
3758 | if (nrpacks < MIN_PACKS_URB || nrpacks > MAX_PACKS) { | |
3759 | printk(KERN_WARNING "invalid nrpacks value.\n"); | |
3760 | return -EINVAL; | |
3761 | } | |
cf78bbc4 | 3762 | return usb_register(&usb_audio_driver); |
1da177e4 LT |
3763 | } |
3764 | ||
3765 | ||
3766 | static void __exit snd_usb_audio_cleanup(void) | |
3767 | { | |
3768 | usb_deregister(&usb_audio_driver); | |
3769 | } | |
3770 | ||
3771 | module_init(snd_usb_audio_init); | |
3772 | module_exit(snd_usb_audio_cleanup); |