blob: 69148212aa70e66f9e1193040bfb41aad5548b6b [file] [log] [blame]
Daniel Macke5779992010-03-04 19:46:13 +01001/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
15 *
16 */
17
18#include <linux/init.h>
Stephen Rothwell36db0452010-03-29 16:02:50 +110019#include <linux/slab.h>
Daniel Macke5779992010-03-04 19:46:13 +010020#include <linux/usb.h>
21#include <linux/usb/audio.h>
Daniel Mack7e847892010-03-11 21:13:20 +010022#include <linux/usb/audio-v2.h>
Daniel Macke5779992010-03-04 19:46:13 +010023
24#include <sound/core.h>
25#include <sound/pcm.h>
26
27#include "usbaudio.h"
28#include "card.h"
29#include "quirks.h"
30#include "helper.h"
31#include "debug.h"
Daniel Mack79f920f2010-05-31 14:51:31 +020032#include "clock.h"
Daniel Macke5779992010-03-04 19:46:13 +010033
34/*
35 * parse the audio format type I descriptor
36 * and returns the corresponding pcm format
37 *
38 * @dev: usb device
39 * @fp: audioformat record
40 * @format: the format tag (wFormatTag)
41 * @fmt: the format type descriptor
42 */
Clemens Ladisch29088fe2010-03-04 19:46:16 +010043static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
Daniel Macke5779992010-03-04 19:46:13 +010044 struct audioformat *fp,
45 int format, void *_fmt,
46 int protocol)
47{
Daniel Macke5779992010-03-04 19:46:13 +010048 int sample_width, sample_bytes;
Clemens Ladisch29088fe2010-03-04 19:46:16 +010049 u64 pcm_formats;
Daniel Macke5779992010-03-04 19:46:13 +010050
51 switch (protocol) {
Clemens Ladischa2acad82010-09-03 10:53:11 +020052 case UAC_VERSION_1:
53 default: {
Daniel Macke5779992010-03-04 19:46:13 +010054 struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
55 sample_width = fmt->bBitResolution;
56 sample_bytes = fmt->bSubframeSize;
Clemens Ladisch29088fe2010-03-04 19:46:16 +010057 format = 1 << format;
Daniel Macke5779992010-03-04 19:46:13 +010058 break;
59 }
60
61 case UAC_VERSION_2: {
62 struct uac_format_type_i_ext_descriptor *fmt = _fmt;
63 sample_width = fmt->bBitResolution;
64 sample_bytes = fmt->bSubslotSize;
Clemens Ladisch29088fe2010-03-04 19:46:16 +010065 format <<= 1;
Daniel Macke5779992010-03-04 19:46:13 +010066 break;
67 }
Daniel Macke5779992010-03-04 19:46:13 +010068 }
69
Clemens Ladisch29088fe2010-03-04 19:46:16 +010070 pcm_formats = 0;
Daniel Macke5779992010-03-04 19:46:13 +010071
Clemens Ladisch29088fe2010-03-04 19:46:16 +010072 if (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED)) {
73 /* some devices don't define this correctly... */
Daniel Macke5779992010-03-04 19:46:13 +010074 snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n",
75 chip->dev->devnum, fp->iface, fp->altsetting);
Clemens Ladisch29088fe2010-03-04 19:46:16 +010076 format = 1 << UAC_FORMAT_TYPE_I_PCM;
77 }
78 if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) {
Daniel Macke5779992010-03-04 19:46:13 +010079 if (sample_width > sample_bytes * 8) {
80 snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
81 chip->dev->devnum, fp->iface, fp->altsetting,
82 sample_width, sample_bytes);
83 }
84 /* check the format byte size */
85 switch (sample_bytes) {
86 case 1:
Clemens Ladisch29088fe2010-03-04 19:46:16 +010087 pcm_formats |= SNDRV_PCM_FMTBIT_S8;
Daniel Macke5779992010-03-04 19:46:13 +010088 break;
89 case 2:
90 if (snd_usb_is_big_endian_format(chip, fp))
Clemens Ladisch29088fe2010-03-04 19:46:16 +010091 pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE; /* grrr, big endian!! */
Daniel Macke5779992010-03-04 19:46:13 +010092 else
Clemens Ladisch29088fe2010-03-04 19:46:16 +010093 pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE;
Daniel Macke5779992010-03-04 19:46:13 +010094 break;
95 case 3:
96 if (snd_usb_is_big_endian_format(chip, fp))
Clemens Ladisch29088fe2010-03-04 19:46:16 +010097 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE; /* grrr, big endian!! */
Daniel Macke5779992010-03-04 19:46:13 +010098 else
Clemens Ladisch29088fe2010-03-04 19:46:16 +010099 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE;
Daniel Macke5779992010-03-04 19:46:13 +0100100 break;
101 case 4:
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100102 pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE;
Daniel Macke5779992010-03-04 19:46:13 +0100103 break;
104 default:
105 snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
106 chip->dev->devnum, fp->iface, fp->altsetting,
107 sample_width, sample_bytes);
108 break;
109 }
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100110 }
111 if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) {
Daniel Macke5779992010-03-04 19:46:13 +0100112 /* Dallas DS4201 workaround: it advertises U8 format, but really
113 supports S8. */
114 if (chip->usb_id == USB_ID(0x04fa, 0x4201))
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100115 pcm_formats |= SNDRV_PCM_FMTBIT_S8;
116 else
117 pcm_formats |= SNDRV_PCM_FMTBIT_U8;
Daniel Macke5779992010-03-04 19:46:13 +0100118 }
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100119 if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) {
120 pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
121 }
122 if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) {
123 pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW;
124 }
125 if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) {
126 pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW;
127 }
128 if (format & ~0x3f) {
129 snd_printk(KERN_INFO "%d:%u:%d : unsupported format bits %#x\n",
130 chip->dev->devnum, fp->iface, fp->altsetting, format);
131 }
132 return pcm_formats;
Daniel Macke5779992010-03-04 19:46:13 +0100133}
134
135
136/*
137 * parse the format descriptor and stores the possible sample rates
138 * on the audioformat table (audio class v1).
139 *
140 * @dev: usb device
141 * @fp: audioformat record
142 * @fmt: the format descriptor
143 * @offset: the start offset of descriptor pointing the rate type
144 * (7 for type I and II, 8 for type II)
145 */
146static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp,
147 unsigned char *fmt, int offset)
148{
149 int nr_rates = fmt[offset];
150
151 if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
152 snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
153 chip->dev->devnum, fp->iface, fp->altsetting);
154 return -1;
155 }
156
157 if (nr_rates) {
158 /*
159 * build the rate table and bitmap flags
160 */
161 int r, idx;
162
163 fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
164 if (fp->rate_table == NULL) {
165 snd_printk(KERN_ERR "cannot malloc\n");
166 return -1;
167 }
168
169 fp->nr_rates = 0;
170 fp->rate_min = fp->rate_max = 0;
171 for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
172 unsigned int rate = combine_triple(&fmt[idx]);
173 if (!rate)
174 continue;
175 /* C-Media CM6501 mislabels its 96 kHz altsetting */
176 if (rate == 48000 && nr_rates == 1 &&
177 (chip->usb_id == USB_ID(0x0d8c, 0x0201) ||
178 chip->usb_id == USB_ID(0x0d8c, 0x0102)) &&
179 fp->altsetting == 5 && fp->maxpacksize == 392)
180 rate = 96000;
181 /* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */
182 if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068))
183 rate = 8000;
184
185 fp->rate_table[fp->nr_rates] = rate;
186 if (!fp->rate_min || rate < fp->rate_min)
187 fp->rate_min = rate;
188 if (!fp->rate_max || rate > fp->rate_max)
189 fp->rate_max = rate;
190 fp->rates |= snd_pcm_rate_to_rate_bit(rate);
191 fp->nr_rates++;
192 }
193 if (!fp->nr_rates) {
194 hwc_debug("All rates were zero. Skipping format!\n");
195 return -1;
196 }
197 } else {
198 /* continuous rates */
199 fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
200 fp->rate_min = combine_triple(&fmt[offset + 1]);
201 fp->rate_max = combine_triple(&fmt[offset + 4]);
202 }
203 return 0;
204}
205
206/*
Daniel Mack67c10362010-06-11 17:46:33 +0200207 * Helper function to walk the array of sample rate triplets reported by
208 * the device. The problem is that we need to parse whole array first to
209 * get to know how many sample rates we have to expect.
210 * Then fp->rate_table can be allocated and filled.
211 */
212static int parse_uac2_sample_rate_range(struct audioformat *fp, int nr_triplets,
213 const unsigned char *data)
214{
215 int i, nr_rates = 0;
216
217 fp->rates = fp->rate_min = fp->rate_max = 0;
218
219 for (i = 0; i < nr_triplets; i++) {
220 int min = combine_quad(&data[2 + 12 * i]);
221 int max = combine_quad(&data[6 + 12 * i]);
222 int res = combine_quad(&data[10 + 12 * i]);
223 int rate;
224
225 if ((max < 0) || (min < 0) || (res < 0) || (max < min))
226 continue;
227
228 /*
229 * for ranges with res == 1, we announce a continuous sample
230 * rate range, and this function should return 0 for no further
231 * parsing.
232 */
233 if (res == 1) {
234 fp->rate_min = min;
235 fp->rate_max = max;
236 fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
237 return 0;
238 }
239
240 for (rate = min; rate <= max; rate += res) {
241 if (fp->rate_table)
242 fp->rate_table[nr_rates] = rate;
243 if (!fp->rate_min || rate < fp->rate_min)
244 fp->rate_min = rate;
245 if (!fp->rate_max || rate > fp->rate_max)
246 fp->rate_max = rate;
247 fp->rates |= snd_pcm_rate_to_rate_bit(rate);
248
249 nr_rates++;
250
251 /* avoid endless loop */
252 if (res == 0)
253 break;
254 }
255 }
256
257 return nr_rates;
258}
259
260/*
Daniel Macke5779992010-03-04 19:46:13 +0100261 * parse the format descriptor and stores the possible sample rates
262 * on the audioformat table (audio class v2).
263 */
264static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200265 struct audioformat *fp)
Daniel Macke5779992010-03-04 19:46:13 +0100266{
267 struct usb_device *dev = chip->dev;
268 unsigned char tmp[2], *data;
Daniel Mack67c10362010-06-11 17:46:33 +0200269 int nr_triplets, data_size, ret = 0;
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200270 int clock = snd_usb_clock_find_source(chip, fp->clock);
Daniel Macke5779992010-03-04 19:46:13 +0100271
Daniel Mackd07140b2010-06-11 17:34:19 +0200272 if (clock < 0) {
273 snd_printk(KERN_ERR "%s(): unable to find clock source (clock %d)\n",
274 __func__, clock);
275 goto err;
276 }
277
Daniel Macke5779992010-03-04 19:46:13 +0100278 /* get the number of sample rates first by only fetching 2 bytes */
279 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
280 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
Daniel Mack11bcbc42010-06-11 17:34:20 +0200281 UAC2_CS_CONTROL_SAM_FREQ << 8,
282 snd_usb_ctrl_intf(chip) | (clock << 8),
Daniel Mack45d76052010-03-11 21:13:21 +0100283 tmp, sizeof(tmp), 1000);
Daniel Macke5779992010-03-04 19:46:13 +0100284
285 if (ret < 0) {
Daniel Mack79f920f2010-05-31 14:51:31 +0200286 snd_printk(KERN_ERR "%s(): unable to retrieve number of sample rates (clock %d)\n",
287 __func__, clock);
Daniel Macke5779992010-03-04 19:46:13 +0100288 goto err;
289 }
290
Daniel Mack67c10362010-06-11 17:46:33 +0200291 nr_triplets = (tmp[1] << 8) | tmp[0];
292 data_size = 2 + 12 * nr_triplets;
Daniel Macke5779992010-03-04 19:46:13 +0100293 data = kzalloc(data_size, GFP_KERNEL);
294 if (!data) {
295 ret = -ENOMEM;
296 goto err;
297 }
298
299 /* now get the full information */
300 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
Daniel Mack79f920f2010-05-31 14:51:31 +0200301 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
Daniel Mack11bcbc42010-06-11 17:34:20 +0200302 UAC2_CS_CONTROL_SAM_FREQ << 8,
303 snd_usb_ctrl_intf(chip) | (clock << 8),
Daniel Mack79f920f2010-05-31 14:51:31 +0200304 data, data_size, 1000);
Daniel Macke5779992010-03-04 19:46:13 +0100305
306 if (ret < 0) {
Daniel Mack79f920f2010-05-31 14:51:31 +0200307 snd_printk(KERN_ERR "%s(): unable to retrieve sample rate range (clock %d)\n",
308 __func__, clock);
Daniel Macke5779992010-03-04 19:46:13 +0100309 ret = -EINVAL;
310 goto err_free;
311 }
312
Daniel Mack67c10362010-06-11 17:46:33 +0200313 /* Call the triplet parser, and make sure fp->rate_table is NULL.
314 * We just use the return value to know how many sample rates we
315 * will have to deal with. */
316 kfree(fp->rate_table);
317 fp->rate_table = NULL;
318 fp->nr_rates = parse_uac2_sample_rate_range(fp, nr_triplets, data);
319
320 if (fp->nr_rates == 0) {
321 /* SNDRV_PCM_RATE_CONTINUOUS */
322 ret = 0;
323 goto err_free;
324 }
325
326 fp->rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
Daniel Macke5779992010-03-04 19:46:13 +0100327 if (!fp->rate_table) {
328 ret = -ENOMEM;
329 goto err_free;
330 }
331
Daniel Mack67c10362010-06-11 17:46:33 +0200332 /* Call the triplet parser again, but this time, fp->rate_table is
333 * allocated, so the rates will be stored */
334 parse_uac2_sample_rate_range(fp, nr_triplets, data);
Daniel Macke5779992010-03-04 19:46:13 +0100335
336err_free:
337 kfree(data);
338err:
339 return ret;
340}
341
342/*
343 * parse the format type I and III descriptors
344 */
345static int parse_audio_format_i(struct snd_usb_audio *chip,
Daniel Mack74754f92010-05-26 18:11:36 +0200346 struct audioformat *fp, int format,
347 struct uac_format_type_i_continuous_descriptor *fmt,
Daniel Macke5779992010-03-04 19:46:13 +0100348 struct usb_host_interface *iface)
349{
350 struct usb_interface_descriptor *altsd = get_iface_desc(iface);
Daniel Macke5779992010-03-04 19:46:13 +0100351 int protocol = altsd->bInterfaceProtocol;
352 int pcm_format, ret;
353
354 if (fmt->bFormatType == UAC_FORMAT_TYPE_III) {
355 /* FIXME: the format type is really IECxxx
356 * but we give normal PCM format to get the existing
357 * apps working...
358 */
359 switch (chip->usb_id) {
360
361 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
362 if (chip->setup == 0x00 &&
363 fp->altsetting == 6)
364 pcm_format = SNDRV_PCM_FORMAT_S16_BE;
365 else
366 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
367 break;
368 default:
369 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
370 }
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100371 fp->formats = 1uLL << pcm_format;
Daniel Macke5779992010-03-04 19:46:13 +0100372 } else {
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100373 fp->formats = parse_audio_format_i_type(chip, fp, format,
374 fmt, protocol);
375 if (!fp->formats)
Daniel Macke5779992010-03-04 19:46:13 +0100376 return -1;
377 }
378
Daniel Macke5779992010-03-04 19:46:13 +0100379 /* gather possible sample rates */
380 /* audio class v1 reports possible sample rates as part of the
381 * proprietary class specific descriptor.
382 * audio class v2 uses class specific EP0 range requests for that.
383 */
384 switch (protocol) {
Clemens Ladischa2acad82010-09-03 10:53:11 +0200385 default:
386 snd_printdd(KERN_WARNING "%d:%u:%d : invalid protocol version %d, assuming v1\n",
387 chip->dev->devnum, fp->iface, fp->altsetting, protocol);
388 /* fall through */
Daniel Macke5779992010-03-04 19:46:13 +0100389 case UAC_VERSION_1:
390 fp->channels = fmt->bNrChannels;
Daniel Mack74754f92010-05-26 18:11:36 +0200391 ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7);
Daniel Macke5779992010-03-04 19:46:13 +0100392 break;
393 case UAC_VERSION_2:
394 /* fp->channels is already set in this case */
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200395 ret = parse_audio_format_rates_v2(chip, fp);
Daniel Macke5779992010-03-04 19:46:13 +0100396 break;
397 }
398
399 if (fp->channels < 1) {
400 snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
401 chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
402 return -1;
403 }
404
405 return ret;
406}
407
408/*
409 * parse the format type II descriptor
410 */
411static int parse_audio_format_ii(struct snd_usb_audio *chip,
412 struct audioformat *fp,
413 int format, void *_fmt,
414 struct usb_host_interface *iface)
415{
416 int brate, framesize, ret;
417 struct usb_interface_descriptor *altsd = get_iface_desc(iface);
418 int protocol = altsd->bInterfaceProtocol;
419
420 switch (format) {
421 case UAC_FORMAT_TYPE_II_AC3:
422 /* FIXME: there is no AC3 format defined yet */
Clemens Ladisch015eb0b2010-03-04 19:46:15 +0100423 // fp->formats = SNDRV_PCM_FMTBIT_AC3;
424 fp->formats = SNDRV_PCM_FMTBIT_U8; /* temporary hack to receive byte streams */
Daniel Macke5779992010-03-04 19:46:13 +0100425 break;
426 case UAC_FORMAT_TYPE_II_MPEG:
Clemens Ladisch015eb0b2010-03-04 19:46:15 +0100427 fp->formats = SNDRV_PCM_FMTBIT_MPEG;
Daniel Macke5779992010-03-04 19:46:13 +0100428 break;
429 default:
430 snd_printd(KERN_INFO "%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n",
431 chip->dev->devnum, fp->iface, fp->altsetting, format);
Clemens Ladisch015eb0b2010-03-04 19:46:15 +0100432 fp->formats = SNDRV_PCM_FMTBIT_MPEG;
Daniel Macke5779992010-03-04 19:46:13 +0100433 break;
434 }
435
436 fp->channels = 1;
437
438 switch (protocol) {
Clemens Ladischa2acad82010-09-03 10:53:11 +0200439 default:
440 snd_printdd(KERN_WARNING "%d:%u:%d : invalid protocol version %d, assuming v1\n",
441 chip->dev->devnum, fp->iface, fp->altsetting, protocol);
442 /* fall through */
Daniel Macke5779992010-03-04 19:46:13 +0100443 case UAC_VERSION_1: {
444 struct uac_format_type_ii_discrete_descriptor *fmt = _fmt;
445 brate = le16_to_cpu(fmt->wMaxBitRate);
446 framesize = le16_to_cpu(fmt->wSamplesPerFrame);
447 snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
448 fp->frame_size = framesize;
449 ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */
450 break;
451 }
452 case UAC_VERSION_2: {
453 struct uac_format_type_ii_ext_descriptor *fmt = _fmt;
454 brate = le16_to_cpu(fmt->wMaxBitRate);
455 framesize = le16_to_cpu(fmt->wSamplesPerFrame);
456 snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
457 fp->frame_size = framesize;
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200458 ret = parse_audio_format_rates_v2(chip, fp);
Daniel Macke5779992010-03-04 19:46:13 +0100459 break;
460 }
461 }
462
463 return ret;
464}
465
466int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
Daniel Mack74754f92010-05-26 18:11:36 +0200467 int format, struct uac_format_type_i_continuous_descriptor *fmt,
468 int stream, struct usb_host_interface *iface)
Daniel Macke5779992010-03-04 19:46:13 +0100469{
470 int err;
471
Daniel Mack74754f92010-05-26 18:11:36 +0200472 switch (fmt->bFormatType) {
Daniel Macke5779992010-03-04 19:46:13 +0100473 case UAC_FORMAT_TYPE_I:
474 case UAC_FORMAT_TYPE_III:
475 err = parse_audio_format_i(chip, fp, format, fmt, iface);
476 break;
477 case UAC_FORMAT_TYPE_II:
478 err = parse_audio_format_ii(chip, fp, format, fmt, iface);
479 break;
480 default:
481 snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
Daniel Mack74754f92010-05-26 18:11:36 +0200482 chip->dev->devnum, fp->iface, fp->altsetting,
483 fmt->bFormatType);
Daniel Mack8d091242010-05-26 18:11:37 +0200484 return -ENOTSUPP;
Daniel Macke5779992010-03-04 19:46:13 +0100485 }
Daniel Mack74754f92010-05-26 18:11:36 +0200486 fp->fmt_type = fmt->bFormatType;
Daniel Macke5779992010-03-04 19:46:13 +0100487 if (err < 0)
488 return err;
489#if 1
490 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
491 /* extigy apparently supports sample rates other than 48k
492 * but not in ordinary way. so we enable only 48k atm.
493 */
494 if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
495 chip->usb_id == USB_ID(0x041e, 0x3020) ||
496 chip->usb_id == USB_ID(0x041e, 0x3061)) {
Daniel Mack74754f92010-05-26 18:11:36 +0200497 if (fmt->bFormatType == UAC_FORMAT_TYPE_I &&
Daniel Macke5779992010-03-04 19:46:13 +0100498 fp->rates != SNDRV_PCM_RATE_48000 &&
499 fp->rates != SNDRV_PCM_RATE_96000)
Daniel Mack8d091242010-05-26 18:11:37 +0200500 return -ENOTSUPP;
Daniel Macke5779992010-03-04 19:46:13 +0100501 }
502#endif
503 return 0;
504}
505