blob: 5b792d2c8061aa0292595186d8cf60fadf8456dc [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)) {
Clemens Ladisch061b8692011-01-10 16:30:54 +010079 if (chip->usb_id == USB_ID(0x0582, 0x0016) /* Edirol SD-90 */ &&
80 sample_width == 24 && sample_bytes == 2)
81 sample_bytes = 3;
82 else if (sample_width > sample_bytes * 8) {
Daniel Macke5779992010-03-04 19:46:13 +010083 snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
84 chip->dev->devnum, fp->iface, fp->altsetting,
85 sample_width, sample_bytes);
86 }
87 /* check the format byte size */
88 switch (sample_bytes) {
89 case 1:
Clemens Ladisch29088fe2010-03-04 19:46:16 +010090 pcm_formats |= SNDRV_PCM_FMTBIT_S8;
Daniel Macke5779992010-03-04 19:46:13 +010091 break;
92 case 2:
93 if (snd_usb_is_big_endian_format(chip, fp))
Clemens Ladisch29088fe2010-03-04 19:46:16 +010094 pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE; /* grrr, big endian!! */
Daniel Macke5779992010-03-04 19:46:13 +010095 else
Clemens Ladisch29088fe2010-03-04 19:46:16 +010096 pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE;
Daniel Macke5779992010-03-04 19:46:13 +010097 break;
98 case 3:
99 if (snd_usb_is_big_endian_format(chip, fp))
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100100 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE; /* grrr, big endian!! */
Daniel Macke5779992010-03-04 19:46:13 +0100101 else
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100102 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE;
Daniel Macke5779992010-03-04 19:46:13 +0100103 break;
104 case 4:
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100105 pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE;
Daniel Macke5779992010-03-04 19:46:13 +0100106 break;
107 default:
108 snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
109 chip->dev->devnum, fp->iface, fp->altsetting,
110 sample_width, sample_bytes);
111 break;
112 }
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100113 }
114 if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) {
Daniel Macke5779992010-03-04 19:46:13 +0100115 /* Dallas DS4201 workaround: it advertises U8 format, but really
116 supports S8. */
117 if (chip->usb_id == USB_ID(0x04fa, 0x4201))
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100118 pcm_formats |= SNDRV_PCM_FMTBIT_S8;
119 else
120 pcm_formats |= SNDRV_PCM_FMTBIT_U8;
Daniel Macke5779992010-03-04 19:46:13 +0100121 }
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100122 if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) {
123 pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
124 }
125 if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) {
126 pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW;
127 }
128 if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) {
129 pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW;
130 }
131 if (format & ~0x3f) {
132 snd_printk(KERN_INFO "%d:%u:%d : unsupported format bits %#x\n",
133 chip->dev->devnum, fp->iface, fp->altsetting, format);
134 }
135 return pcm_formats;
Daniel Macke5779992010-03-04 19:46:13 +0100136}
137
138
139/*
140 * parse the format descriptor and stores the possible sample rates
141 * on the audioformat table (audio class v1).
142 *
143 * @dev: usb device
144 * @fp: audioformat record
145 * @fmt: the format descriptor
146 * @offset: the start offset of descriptor pointing the rate type
147 * (7 for type I and II, 8 for type II)
148 */
149static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp,
150 unsigned char *fmt, int offset)
151{
152 int nr_rates = fmt[offset];
153
154 if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
155 snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
156 chip->dev->devnum, fp->iface, fp->altsetting);
157 return -1;
158 }
159
160 if (nr_rates) {
161 /*
162 * build the rate table and bitmap flags
163 */
164 int r, idx;
165
166 fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
167 if (fp->rate_table == NULL) {
168 snd_printk(KERN_ERR "cannot malloc\n");
169 return -1;
170 }
171
172 fp->nr_rates = 0;
173 fp->rate_min = fp->rate_max = 0;
174 for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
175 unsigned int rate = combine_triple(&fmt[idx]);
176 if (!rate)
177 continue;
178 /* C-Media CM6501 mislabels its 96 kHz altsetting */
179 if (rate == 48000 && nr_rates == 1 &&
180 (chip->usb_id == USB_ID(0x0d8c, 0x0201) ||
181 chip->usb_id == USB_ID(0x0d8c, 0x0102)) &&
182 fp->altsetting == 5 && fp->maxpacksize == 392)
183 rate = 96000;
184 /* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */
185 if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068))
186 rate = 8000;
187
188 fp->rate_table[fp->nr_rates] = rate;
189 if (!fp->rate_min || rate < fp->rate_min)
190 fp->rate_min = rate;
191 if (!fp->rate_max || rate > fp->rate_max)
192 fp->rate_max = rate;
193 fp->rates |= snd_pcm_rate_to_rate_bit(rate);
194 fp->nr_rates++;
195 }
196 if (!fp->nr_rates) {
197 hwc_debug("All rates were zero. Skipping format!\n");
198 return -1;
199 }
200 } else {
201 /* continuous rates */
202 fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
203 fp->rate_min = combine_triple(&fmt[offset + 1]);
204 fp->rate_max = combine_triple(&fmt[offset + 4]);
205 }
206 return 0;
207}
208
209/*
Daniel Mack67c10362010-06-11 17:46:33 +0200210 * Helper function to walk the array of sample rate triplets reported by
211 * the device. The problem is that we need to parse whole array first to
212 * get to know how many sample rates we have to expect.
213 * Then fp->rate_table can be allocated and filled.
214 */
215static int parse_uac2_sample_rate_range(struct audioformat *fp, int nr_triplets,
216 const unsigned char *data)
217{
218 int i, nr_rates = 0;
219
220 fp->rates = fp->rate_min = fp->rate_max = 0;
221
222 for (i = 0; i < nr_triplets; i++) {
223 int min = combine_quad(&data[2 + 12 * i]);
224 int max = combine_quad(&data[6 + 12 * i]);
225 int res = combine_quad(&data[10 + 12 * i]);
226 int rate;
227
228 if ((max < 0) || (min < 0) || (res < 0) || (max < min))
229 continue;
230
231 /*
232 * for ranges with res == 1, we announce a continuous sample
233 * rate range, and this function should return 0 for no further
234 * parsing.
235 */
236 if (res == 1) {
237 fp->rate_min = min;
238 fp->rate_max = max;
239 fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
240 return 0;
241 }
242
243 for (rate = min; rate <= max; rate += res) {
244 if (fp->rate_table)
245 fp->rate_table[nr_rates] = rate;
246 if (!fp->rate_min || rate < fp->rate_min)
247 fp->rate_min = rate;
248 if (!fp->rate_max || rate > fp->rate_max)
249 fp->rate_max = rate;
250 fp->rates |= snd_pcm_rate_to_rate_bit(rate);
251
252 nr_rates++;
253
254 /* avoid endless loop */
255 if (res == 0)
256 break;
257 }
258 }
259
260 return nr_rates;
261}
262
263/*
Daniel Macke5779992010-03-04 19:46:13 +0100264 * parse the format descriptor and stores the possible sample rates
265 * on the audioformat table (audio class v2).
266 */
267static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200268 struct audioformat *fp)
Daniel Macke5779992010-03-04 19:46:13 +0100269{
270 struct usb_device *dev = chip->dev;
271 unsigned char tmp[2], *data;
Daniel Mack67c10362010-06-11 17:46:33 +0200272 int nr_triplets, data_size, ret = 0;
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200273 int clock = snd_usb_clock_find_source(chip, fp->clock);
Daniel Macke5779992010-03-04 19:46:13 +0100274
Daniel Mackd07140b2010-06-11 17:34:19 +0200275 if (clock < 0) {
276 snd_printk(KERN_ERR "%s(): unable to find clock source (clock %d)\n",
277 __func__, clock);
278 goto err;
279 }
280
Daniel Macke5779992010-03-04 19:46:13 +0100281 /* get the number of sample rates first by only fetching 2 bytes */
282 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
283 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
Daniel Mack11bcbc42010-06-11 17:34:20 +0200284 UAC2_CS_CONTROL_SAM_FREQ << 8,
285 snd_usb_ctrl_intf(chip) | (clock << 8),
Daniel Mack45d76052010-03-11 21:13:21 +0100286 tmp, sizeof(tmp), 1000);
Daniel Macke5779992010-03-04 19:46:13 +0100287
288 if (ret < 0) {
Daniel Mack79f920f2010-05-31 14:51:31 +0200289 snd_printk(KERN_ERR "%s(): unable to retrieve number of sample rates (clock %d)\n",
290 __func__, clock);
Daniel Macke5779992010-03-04 19:46:13 +0100291 goto err;
292 }
293
Daniel Mack67c10362010-06-11 17:46:33 +0200294 nr_triplets = (tmp[1] << 8) | tmp[0];
295 data_size = 2 + 12 * nr_triplets;
Daniel Macke5779992010-03-04 19:46:13 +0100296 data = kzalloc(data_size, GFP_KERNEL);
297 if (!data) {
298 ret = -ENOMEM;
299 goto err;
300 }
301
302 /* now get the full information */
303 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
Daniel Mack79f920f2010-05-31 14:51:31 +0200304 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
Daniel Mack11bcbc42010-06-11 17:34:20 +0200305 UAC2_CS_CONTROL_SAM_FREQ << 8,
306 snd_usb_ctrl_intf(chip) | (clock << 8),
Daniel Mack79f920f2010-05-31 14:51:31 +0200307 data, data_size, 1000);
Daniel Macke5779992010-03-04 19:46:13 +0100308
309 if (ret < 0) {
Daniel Mack79f920f2010-05-31 14:51:31 +0200310 snd_printk(KERN_ERR "%s(): unable to retrieve sample rate range (clock %d)\n",
311 __func__, clock);
Daniel Macke5779992010-03-04 19:46:13 +0100312 ret = -EINVAL;
313 goto err_free;
314 }
315
Daniel Mack67c10362010-06-11 17:46:33 +0200316 /* Call the triplet parser, and make sure fp->rate_table is NULL.
317 * We just use the return value to know how many sample rates we
318 * will have to deal with. */
319 kfree(fp->rate_table);
320 fp->rate_table = NULL;
321 fp->nr_rates = parse_uac2_sample_rate_range(fp, nr_triplets, data);
322
323 if (fp->nr_rates == 0) {
324 /* SNDRV_PCM_RATE_CONTINUOUS */
325 ret = 0;
326 goto err_free;
327 }
328
329 fp->rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
Daniel Macke5779992010-03-04 19:46:13 +0100330 if (!fp->rate_table) {
331 ret = -ENOMEM;
332 goto err_free;
333 }
334
Daniel Mack67c10362010-06-11 17:46:33 +0200335 /* Call the triplet parser again, but this time, fp->rate_table is
336 * allocated, so the rates will be stored */
337 parse_uac2_sample_rate_range(fp, nr_triplets, data);
Daniel Macke5779992010-03-04 19:46:13 +0100338
339err_free:
340 kfree(data);
341err:
342 return ret;
343}
344
345/*
346 * parse the format type I and III descriptors
347 */
348static int parse_audio_format_i(struct snd_usb_audio *chip,
Daniel Mack74754f92010-05-26 18:11:36 +0200349 struct audioformat *fp, int format,
350 struct uac_format_type_i_continuous_descriptor *fmt,
Daniel Macke5779992010-03-04 19:46:13 +0100351 struct usb_host_interface *iface)
352{
353 struct usb_interface_descriptor *altsd = get_iface_desc(iface);
Daniel Macke5779992010-03-04 19:46:13 +0100354 int protocol = altsd->bInterfaceProtocol;
355 int pcm_format, ret;
356
357 if (fmt->bFormatType == UAC_FORMAT_TYPE_III) {
358 /* FIXME: the format type is really IECxxx
359 * but we give normal PCM format to get the existing
360 * apps working...
361 */
362 switch (chip->usb_id) {
363
364 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
365 if (chip->setup == 0x00 &&
366 fp->altsetting == 6)
367 pcm_format = SNDRV_PCM_FORMAT_S16_BE;
368 else
369 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
370 break;
371 default:
372 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
373 }
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100374 fp->formats = 1uLL << pcm_format;
Daniel Macke5779992010-03-04 19:46:13 +0100375 } else {
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100376 fp->formats = parse_audio_format_i_type(chip, fp, format,
377 fmt, protocol);
378 if (!fp->formats)
Daniel Macke5779992010-03-04 19:46:13 +0100379 return -1;
380 }
381
Daniel Macke5779992010-03-04 19:46:13 +0100382 /* gather possible sample rates */
383 /* audio class v1 reports possible sample rates as part of the
384 * proprietary class specific descriptor.
385 * audio class v2 uses class specific EP0 range requests for that.
386 */
387 switch (protocol) {
Clemens Ladischa2acad82010-09-03 10:53:11 +0200388 default:
389 snd_printdd(KERN_WARNING "%d:%u:%d : invalid protocol version %d, assuming v1\n",
390 chip->dev->devnum, fp->iface, fp->altsetting, protocol);
391 /* fall through */
Daniel Macke5779992010-03-04 19:46:13 +0100392 case UAC_VERSION_1:
393 fp->channels = fmt->bNrChannels;
Daniel Mack74754f92010-05-26 18:11:36 +0200394 ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7);
Daniel Macke5779992010-03-04 19:46:13 +0100395 break;
396 case UAC_VERSION_2:
397 /* fp->channels is already set in this case */
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200398 ret = parse_audio_format_rates_v2(chip, fp);
Daniel Macke5779992010-03-04 19:46:13 +0100399 break;
400 }
401
402 if (fp->channels < 1) {
403 snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
404 chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
405 return -1;
406 }
407
408 return ret;
409}
410
411/*
412 * parse the format type II descriptor
413 */
414static int parse_audio_format_ii(struct snd_usb_audio *chip,
415 struct audioformat *fp,
416 int format, void *_fmt,
417 struct usb_host_interface *iface)
418{
419 int brate, framesize, ret;
420 struct usb_interface_descriptor *altsd = get_iface_desc(iface);
421 int protocol = altsd->bInterfaceProtocol;
422
423 switch (format) {
424 case UAC_FORMAT_TYPE_II_AC3:
425 /* FIXME: there is no AC3 format defined yet */
Clemens Ladisch015eb0b2010-03-04 19:46:15 +0100426 // fp->formats = SNDRV_PCM_FMTBIT_AC3;
427 fp->formats = SNDRV_PCM_FMTBIT_U8; /* temporary hack to receive byte streams */
Daniel Macke5779992010-03-04 19:46:13 +0100428 break;
429 case UAC_FORMAT_TYPE_II_MPEG:
Clemens Ladisch015eb0b2010-03-04 19:46:15 +0100430 fp->formats = SNDRV_PCM_FMTBIT_MPEG;
Daniel Macke5779992010-03-04 19:46:13 +0100431 break;
432 default:
433 snd_printd(KERN_INFO "%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n",
434 chip->dev->devnum, fp->iface, fp->altsetting, format);
Clemens Ladisch015eb0b2010-03-04 19:46:15 +0100435 fp->formats = SNDRV_PCM_FMTBIT_MPEG;
Daniel Macke5779992010-03-04 19:46:13 +0100436 break;
437 }
438
439 fp->channels = 1;
440
441 switch (protocol) {
Clemens Ladischa2acad82010-09-03 10:53:11 +0200442 default:
443 snd_printdd(KERN_WARNING "%d:%u:%d : invalid protocol version %d, assuming v1\n",
444 chip->dev->devnum, fp->iface, fp->altsetting, protocol);
445 /* fall through */
Daniel Macke5779992010-03-04 19:46:13 +0100446 case UAC_VERSION_1: {
447 struct uac_format_type_ii_discrete_descriptor *fmt = _fmt;
448 brate = le16_to_cpu(fmt->wMaxBitRate);
449 framesize = le16_to_cpu(fmt->wSamplesPerFrame);
450 snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
451 fp->frame_size = framesize;
452 ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */
453 break;
454 }
455 case UAC_VERSION_2: {
456 struct uac_format_type_ii_ext_descriptor *fmt = _fmt;
457 brate = le16_to_cpu(fmt->wMaxBitRate);
458 framesize = le16_to_cpu(fmt->wSamplesPerFrame);
459 snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
460 fp->frame_size = framesize;
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200461 ret = parse_audio_format_rates_v2(chip, fp);
Daniel Macke5779992010-03-04 19:46:13 +0100462 break;
463 }
464 }
465
466 return ret;
467}
468
469int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
Daniel Mack74754f92010-05-26 18:11:36 +0200470 int format, struct uac_format_type_i_continuous_descriptor *fmt,
471 int stream, struct usb_host_interface *iface)
Daniel Macke5779992010-03-04 19:46:13 +0100472{
473 int err;
474
Daniel Mack74754f92010-05-26 18:11:36 +0200475 switch (fmt->bFormatType) {
Daniel Macke5779992010-03-04 19:46:13 +0100476 case UAC_FORMAT_TYPE_I:
477 case UAC_FORMAT_TYPE_III:
478 err = parse_audio_format_i(chip, fp, format, fmt, iface);
479 break;
480 case UAC_FORMAT_TYPE_II:
481 err = parse_audio_format_ii(chip, fp, format, fmt, iface);
482 break;
483 default:
484 snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
Daniel Mack74754f92010-05-26 18:11:36 +0200485 chip->dev->devnum, fp->iface, fp->altsetting,
486 fmt->bFormatType);
Daniel Mack8d091242010-05-26 18:11:37 +0200487 return -ENOTSUPP;
Daniel Macke5779992010-03-04 19:46:13 +0100488 }
Daniel Mack74754f92010-05-26 18:11:36 +0200489 fp->fmt_type = fmt->bFormatType;
Daniel Macke5779992010-03-04 19:46:13 +0100490 if (err < 0)
491 return err;
492#if 1
493 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
494 /* extigy apparently supports sample rates other than 48k
495 * but not in ordinary way. so we enable only 48k atm.
496 */
497 if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
498 chip->usb_id == USB_ID(0x041e, 0x3020) ||
499 chip->usb_id == USB_ID(0x041e, 0x3061)) {
Daniel Mack74754f92010-05-26 18:11:36 +0200500 if (fmt->bFormatType == UAC_FORMAT_TYPE_I &&
Daniel Macke5779992010-03-04 19:46:13 +0100501 fp->rates != SNDRV_PCM_RATE_48000 &&
502 fp->rates != SNDRV_PCM_RATE_96000)
Daniel Mack8d091242010-05-26 18:11:37 +0200503 return -ENOTSUPP;
Daniel Macke5779992010-03-04 19:46:13 +0100504 }
505#endif
506 return 0;
507}
508