blob: e09aba19375cf938eafd28aedec9edf2ea55dbbe [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 Mackee95cb62011-05-18 11:28:40 +020033#include "format.h"
Daniel Macke5779992010-03-04 19:46:13 +010034
35/*
36 * parse the audio format type I descriptor
37 * and returns the corresponding pcm format
38 *
39 * @dev: usb device
40 * @fp: audioformat record
41 * @format: the format tag (wFormatTag)
42 * @fmt: the format type descriptor
43 */
Clemens Ladisch29088fe2010-03-04 19:46:16 +010044static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
Daniel Macke5779992010-03-04 19:46:13 +010045 struct audioformat *fp,
46 int format, void *_fmt,
47 int protocol)
48{
Daniel Macke5779992010-03-04 19:46:13 +010049 int sample_width, sample_bytes;
Clemens Ladisch29088fe2010-03-04 19:46:16 +010050 u64 pcm_formats;
Daniel Macke5779992010-03-04 19:46:13 +010051
52 switch (protocol) {
Clemens Ladischa2acad82010-09-03 10:53:11 +020053 case UAC_VERSION_1:
54 default: {
Daniel Macke5779992010-03-04 19:46:13 +010055 struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
56 sample_width = fmt->bBitResolution;
57 sample_bytes = fmt->bSubframeSize;
Clemens Ladisch29088fe2010-03-04 19:46:16 +010058 format = 1 << format;
Daniel Macke5779992010-03-04 19:46:13 +010059 break;
60 }
61
62 case UAC_VERSION_2: {
63 struct uac_format_type_i_ext_descriptor *fmt = _fmt;
64 sample_width = fmt->bBitResolution;
65 sample_bytes = fmt->bSubslotSize;
Clemens Ladisch29088fe2010-03-04 19:46:16 +010066 format <<= 1;
Daniel Macke5779992010-03-04 19:46:13 +010067 break;
68 }
Daniel Macke5779992010-03-04 19:46:13 +010069 }
70
Clemens Ladisch29088fe2010-03-04 19:46:16 +010071 pcm_formats = 0;
Daniel Macke5779992010-03-04 19:46:13 +010072
Clemens Ladisch29088fe2010-03-04 19:46:16 +010073 if (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED)) {
74 /* some devices don't define this correctly... */
Daniel Macke5779992010-03-04 19:46:13 +010075 snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n",
76 chip->dev->devnum, fp->iface, fp->altsetting);
Clemens Ladisch29088fe2010-03-04 19:46:16 +010077 format = 1 << UAC_FORMAT_TYPE_I_PCM;
78 }
79 if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) {
Clemens Ladisch061b8692011-01-10 16:30:54 +010080 if (chip->usb_id == USB_ID(0x0582, 0x0016) /* Edirol SD-90 */ &&
81 sample_width == 24 && sample_bytes == 2)
82 sample_bytes = 3;
83 else if (sample_width > sample_bytes * 8) {
Daniel Macke5779992010-03-04 19:46:13 +010084 snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
85 chip->dev->devnum, fp->iface, fp->altsetting,
86 sample_width, sample_bytes);
87 }
88 /* check the format byte size */
89 switch (sample_bytes) {
90 case 1:
Clemens Ladisch29088fe2010-03-04 19:46:16 +010091 pcm_formats |= SNDRV_PCM_FMTBIT_S8;
Daniel Macke5779992010-03-04 19:46:13 +010092 break;
93 case 2:
94 if (snd_usb_is_big_endian_format(chip, fp))
Clemens Ladisch29088fe2010-03-04 19:46:16 +010095 pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE; /* grrr, big endian!! */
Daniel Macke5779992010-03-04 19:46:13 +010096 else
Clemens Ladisch29088fe2010-03-04 19:46:16 +010097 pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE;
Daniel Macke5779992010-03-04 19:46:13 +010098 break;
99 case 3:
100 if (snd_usb_is_big_endian_format(chip, fp))
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100101 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE; /* grrr, big endian!! */
Daniel Macke5779992010-03-04 19:46:13 +0100102 else
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100103 pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE;
Daniel Macke5779992010-03-04 19:46:13 +0100104 break;
105 case 4:
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100106 pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE;
Daniel Macke5779992010-03-04 19:46:13 +0100107 break;
108 default:
109 snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
110 chip->dev->devnum, fp->iface, fp->altsetting,
111 sample_width, sample_bytes);
112 break;
113 }
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100114 }
115 if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) {
Daniel Macke5779992010-03-04 19:46:13 +0100116 /* Dallas DS4201 workaround: it advertises U8 format, but really
117 supports S8. */
118 if (chip->usb_id == USB_ID(0x04fa, 0x4201))
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100119 pcm_formats |= SNDRV_PCM_FMTBIT_S8;
120 else
121 pcm_formats |= SNDRV_PCM_FMTBIT_U8;
Daniel Macke5779992010-03-04 19:46:13 +0100122 }
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100123 if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) {
124 pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
125 }
126 if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) {
127 pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW;
128 }
129 if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) {
130 pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW;
131 }
132 if (format & ~0x3f) {
133 snd_printk(KERN_INFO "%d:%u:%d : unsupported format bits %#x\n",
134 chip->dev->devnum, fp->iface, fp->altsetting, format);
135 }
136 return pcm_formats;
Daniel Macke5779992010-03-04 19:46:13 +0100137}
138
139
140/*
141 * parse the format descriptor and stores the possible sample rates
142 * on the audioformat table (audio class v1).
143 *
144 * @dev: usb device
145 * @fp: audioformat record
146 * @fmt: the format descriptor
147 * @offset: the start offset of descriptor pointing the rate type
148 * (7 for type I and II, 8 for type II)
149 */
150static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp,
151 unsigned char *fmt, int offset)
152{
153 int nr_rates = fmt[offset];
154
155 if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
156 snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
157 chip->dev->devnum, fp->iface, fp->altsetting);
158 return -1;
159 }
160
161 if (nr_rates) {
162 /*
163 * build the rate table and bitmap flags
164 */
165 int r, idx;
166
167 fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
168 if (fp->rate_table == NULL) {
169 snd_printk(KERN_ERR "cannot malloc\n");
170 return -1;
171 }
172
173 fp->nr_rates = 0;
174 fp->rate_min = fp->rate_max = 0;
175 for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
176 unsigned int rate = combine_triple(&fmt[idx]);
177 if (!rate)
178 continue;
179 /* C-Media CM6501 mislabels its 96 kHz altsetting */
Wolfgang Breyha8129e792011-04-28 16:18:40 +0200180 /* Terratec Aureon 7.1 USB C-Media 6206, too */
Daniel Macke5779992010-03-04 19:46:13 +0100181 if (rate == 48000 && nr_rates == 1 &&
182 (chip->usb_id == USB_ID(0x0d8c, 0x0201) ||
Wolfgang Breyha8129e792011-04-28 16:18:40 +0200183 chip->usb_id == USB_ID(0x0d8c, 0x0102) ||
184 chip->usb_id == USB_ID(0x0ccd, 0x00b1)) &&
Daniel Macke5779992010-03-04 19:46:13 +0100185 fp->altsetting == 5 && fp->maxpacksize == 392)
186 rate = 96000;
187 /* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */
188 if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068))
189 rate = 8000;
190
191 fp->rate_table[fp->nr_rates] = rate;
192 if (!fp->rate_min || rate < fp->rate_min)
193 fp->rate_min = rate;
194 if (!fp->rate_max || rate > fp->rate_max)
195 fp->rate_max = rate;
196 fp->rates |= snd_pcm_rate_to_rate_bit(rate);
197 fp->nr_rates++;
198 }
199 if (!fp->nr_rates) {
200 hwc_debug("All rates were zero. Skipping format!\n");
201 return -1;
202 }
203 } else {
204 /* continuous rates */
205 fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
206 fp->rate_min = combine_triple(&fmt[offset + 1]);
207 fp->rate_max = combine_triple(&fmt[offset + 4]);
208 }
209 return 0;
210}
211
Xi Wang4fa0e812012-01-08 09:02:52 -0500212#define MAX_UAC2_NR_RATES 1024
213
Daniel Macke5779992010-03-04 19:46:13 +0100214/*
Daniel Mack67c10362010-06-11 17:46:33 +0200215 * Helper function to walk the array of sample rate triplets reported by
216 * the device. The problem is that we need to parse whole array first to
217 * get to know how many sample rates we have to expect.
218 * Then fp->rate_table can be allocated and filled.
219 */
220static int parse_uac2_sample_rate_range(struct audioformat *fp, int nr_triplets,
221 const unsigned char *data)
222{
223 int i, nr_rates = 0;
224
225 fp->rates = fp->rate_min = fp->rate_max = 0;
226
227 for (i = 0; i < nr_triplets; i++) {
228 int min = combine_quad(&data[2 + 12 * i]);
229 int max = combine_quad(&data[6 + 12 * i]);
230 int res = combine_quad(&data[10 + 12 * i]);
Xi Wang4fa0e812012-01-08 09:02:52 -0500231 unsigned int rate;
Daniel Mack67c10362010-06-11 17:46:33 +0200232
233 if ((max < 0) || (min < 0) || (res < 0) || (max < min))
234 continue;
235
236 /*
237 * for ranges with res == 1, we announce a continuous sample
238 * rate range, and this function should return 0 for no further
239 * parsing.
240 */
241 if (res == 1) {
242 fp->rate_min = min;
243 fp->rate_max = max;
244 fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
245 return 0;
246 }
247
248 for (rate = min; rate <= max; rate += res) {
249 if (fp->rate_table)
250 fp->rate_table[nr_rates] = rate;
251 if (!fp->rate_min || rate < fp->rate_min)
252 fp->rate_min = rate;
253 if (!fp->rate_max || rate > fp->rate_max)
254 fp->rate_max = rate;
255 fp->rates |= snd_pcm_rate_to_rate_bit(rate);
256
257 nr_rates++;
Xi Wang4fa0e812012-01-08 09:02:52 -0500258 if (nr_rates >= MAX_UAC2_NR_RATES) {
259 snd_printk(KERN_ERR "invalid uac2 rates\n");
260 break;
261 }
Daniel Mack67c10362010-06-11 17:46:33 +0200262
263 /* avoid endless loop */
264 if (res == 0)
265 break;
266 }
267 }
268
269 return nr_rates;
270}
271
272/*
Daniel Macke5779992010-03-04 19:46:13 +0100273 * parse the format descriptor and stores the possible sample rates
274 * on the audioformat table (audio class v2).
275 */
276static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200277 struct audioformat *fp)
Daniel Macke5779992010-03-04 19:46:13 +0100278{
279 struct usb_device *dev = chip->dev;
280 unsigned char tmp[2], *data;
Daniel Mack67c10362010-06-11 17:46:33 +0200281 int nr_triplets, data_size, ret = 0;
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200282 int clock = snd_usb_clock_find_source(chip, fp->clock);
Daniel Macke5779992010-03-04 19:46:13 +0100283
Daniel Mackd07140b2010-06-11 17:34:19 +0200284 if (clock < 0) {
285 snd_printk(KERN_ERR "%s(): unable to find clock source (clock %d)\n",
286 __func__, clock);
287 goto err;
288 }
289
Daniel Macke5779992010-03-04 19:46:13 +0100290 /* get the number of sample rates first by only fetching 2 bytes */
291 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
292 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
Daniel Mack11bcbc42010-06-11 17:34:20 +0200293 UAC2_CS_CONTROL_SAM_FREQ << 8,
294 snd_usb_ctrl_intf(chip) | (clock << 8),
Clemens Ladisch17d900c2011-09-26 21:15:27 +0200295 tmp, sizeof(tmp));
Daniel Macke5779992010-03-04 19:46:13 +0100296
297 if (ret < 0) {
Daniel Mack79f920f2010-05-31 14:51:31 +0200298 snd_printk(KERN_ERR "%s(): unable to retrieve number of sample rates (clock %d)\n",
299 __func__, clock);
Daniel Macke5779992010-03-04 19:46:13 +0100300 goto err;
301 }
302
Daniel Mack67c10362010-06-11 17:46:33 +0200303 nr_triplets = (tmp[1] << 8) | tmp[0];
304 data_size = 2 + 12 * nr_triplets;
Daniel Macke5779992010-03-04 19:46:13 +0100305 data = kzalloc(data_size, GFP_KERNEL);
306 if (!data) {
307 ret = -ENOMEM;
308 goto err;
309 }
310
311 /* now get the full information */
312 ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
Daniel Mack79f920f2010-05-31 14:51:31 +0200313 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
Daniel Mack11bcbc42010-06-11 17:34:20 +0200314 UAC2_CS_CONTROL_SAM_FREQ << 8,
315 snd_usb_ctrl_intf(chip) | (clock << 8),
Clemens Ladisch17d900c2011-09-26 21:15:27 +0200316 data, data_size);
Daniel Macke5779992010-03-04 19:46:13 +0100317
318 if (ret < 0) {
Daniel Mack79f920f2010-05-31 14:51:31 +0200319 snd_printk(KERN_ERR "%s(): unable to retrieve sample rate range (clock %d)\n",
320 __func__, clock);
Daniel Macke5779992010-03-04 19:46:13 +0100321 ret = -EINVAL;
322 goto err_free;
323 }
324
Daniel Mack67c10362010-06-11 17:46:33 +0200325 /* Call the triplet parser, and make sure fp->rate_table is NULL.
326 * We just use the return value to know how many sample rates we
327 * will have to deal with. */
328 kfree(fp->rate_table);
329 fp->rate_table = NULL;
330 fp->nr_rates = parse_uac2_sample_rate_range(fp, nr_triplets, data);
331
332 if (fp->nr_rates == 0) {
333 /* SNDRV_PCM_RATE_CONTINUOUS */
334 ret = 0;
335 goto err_free;
336 }
337
338 fp->rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
Daniel Macke5779992010-03-04 19:46:13 +0100339 if (!fp->rate_table) {
340 ret = -ENOMEM;
341 goto err_free;
342 }
343
Daniel Mack67c10362010-06-11 17:46:33 +0200344 /* Call the triplet parser again, but this time, fp->rate_table is
345 * allocated, so the rates will be stored */
346 parse_uac2_sample_rate_range(fp, nr_triplets, data);
Daniel Macke5779992010-03-04 19:46:13 +0100347
348err_free:
349 kfree(data);
350err:
351 return ret;
352}
353
354/*
355 * parse the format type I and III descriptors
356 */
357static int parse_audio_format_i(struct snd_usb_audio *chip,
Daniel Mack74754f92010-05-26 18:11:36 +0200358 struct audioformat *fp, int format,
359 struct uac_format_type_i_continuous_descriptor *fmt,
Daniel Macke5779992010-03-04 19:46:13 +0100360 struct usb_host_interface *iface)
361{
362 struct usb_interface_descriptor *altsd = get_iface_desc(iface);
Daniel Macke5779992010-03-04 19:46:13 +0100363 int protocol = altsd->bInterfaceProtocol;
364 int pcm_format, ret;
365
366 if (fmt->bFormatType == UAC_FORMAT_TYPE_III) {
367 /* FIXME: the format type is really IECxxx
368 * but we give normal PCM format to get the existing
369 * apps working...
370 */
371 switch (chip->usb_id) {
372
373 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
374 if (chip->setup == 0x00 &&
375 fp->altsetting == 6)
376 pcm_format = SNDRV_PCM_FORMAT_S16_BE;
377 else
378 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
379 break;
380 default:
381 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
382 }
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100383 fp->formats = 1uLL << pcm_format;
Daniel Macke5779992010-03-04 19:46:13 +0100384 } else {
Clemens Ladisch29088fe2010-03-04 19:46:16 +0100385 fp->formats = parse_audio_format_i_type(chip, fp, format,
386 fmt, protocol);
387 if (!fp->formats)
Daniel Macke5779992010-03-04 19:46:13 +0100388 return -1;
389 }
390
Daniel Macke5779992010-03-04 19:46:13 +0100391 /* gather possible sample rates */
392 /* audio class v1 reports possible sample rates as part of the
393 * proprietary class specific descriptor.
394 * audio class v2 uses class specific EP0 range requests for that.
395 */
396 switch (protocol) {
Clemens Ladischa2acad82010-09-03 10:53:11 +0200397 default:
398 snd_printdd(KERN_WARNING "%d:%u:%d : invalid protocol version %d, assuming v1\n",
399 chip->dev->devnum, fp->iface, fp->altsetting, protocol);
400 /* fall through */
Daniel Macke5779992010-03-04 19:46:13 +0100401 case UAC_VERSION_1:
402 fp->channels = fmt->bNrChannels;
Daniel Mack74754f92010-05-26 18:11:36 +0200403 ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7);
Daniel Macke5779992010-03-04 19:46:13 +0100404 break;
405 case UAC_VERSION_2:
406 /* fp->channels is already set in this case */
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200407 ret = parse_audio_format_rates_v2(chip, fp);
Daniel Macke5779992010-03-04 19:46:13 +0100408 break;
409 }
410
411 if (fp->channels < 1) {
412 snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
413 chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
414 return -1;
415 }
416
417 return ret;
418}
419
420/*
421 * parse the format type II descriptor
422 */
423static int parse_audio_format_ii(struct snd_usb_audio *chip,
424 struct audioformat *fp,
425 int format, void *_fmt,
426 struct usb_host_interface *iface)
427{
428 int brate, framesize, ret;
429 struct usb_interface_descriptor *altsd = get_iface_desc(iface);
430 int protocol = altsd->bInterfaceProtocol;
431
432 switch (format) {
433 case UAC_FORMAT_TYPE_II_AC3:
434 /* FIXME: there is no AC3 format defined yet */
Clemens Ladisch015eb0b2010-03-04 19:46:15 +0100435 // fp->formats = SNDRV_PCM_FMTBIT_AC3;
436 fp->formats = SNDRV_PCM_FMTBIT_U8; /* temporary hack to receive byte streams */
Daniel Macke5779992010-03-04 19:46:13 +0100437 break;
438 case UAC_FORMAT_TYPE_II_MPEG:
Clemens Ladisch015eb0b2010-03-04 19:46:15 +0100439 fp->formats = SNDRV_PCM_FMTBIT_MPEG;
Daniel Macke5779992010-03-04 19:46:13 +0100440 break;
441 default:
442 snd_printd(KERN_INFO "%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n",
443 chip->dev->devnum, fp->iface, fp->altsetting, format);
Clemens Ladisch015eb0b2010-03-04 19:46:15 +0100444 fp->formats = SNDRV_PCM_FMTBIT_MPEG;
Daniel Macke5779992010-03-04 19:46:13 +0100445 break;
446 }
447
448 fp->channels = 1;
449
450 switch (protocol) {
Clemens Ladischa2acad82010-09-03 10:53:11 +0200451 default:
452 snd_printdd(KERN_WARNING "%d:%u:%d : invalid protocol version %d, assuming v1\n",
453 chip->dev->devnum, fp->iface, fp->altsetting, protocol);
454 /* fall through */
Daniel Macke5779992010-03-04 19:46:13 +0100455 case UAC_VERSION_1: {
456 struct uac_format_type_ii_discrete_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;
461 ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */
462 break;
463 }
464 case UAC_VERSION_2: {
465 struct uac_format_type_ii_ext_descriptor *fmt = _fmt;
466 brate = le16_to_cpu(fmt->wMaxBitRate);
467 framesize = le16_to_cpu(fmt->wSamplesPerFrame);
468 snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
469 fp->frame_size = framesize;
Daniel Mack3d8d4dc2010-06-16 17:57:31 +0200470 ret = parse_audio_format_rates_v2(chip, fp);
Daniel Macke5779992010-03-04 19:46:13 +0100471 break;
472 }
473 }
474
475 return ret;
476}
477
478int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
Daniel Mack74754f92010-05-26 18:11:36 +0200479 int format, struct uac_format_type_i_continuous_descriptor *fmt,
480 int stream, struct usb_host_interface *iface)
Daniel Macke5779992010-03-04 19:46:13 +0100481{
482 int err;
483
Daniel Mack74754f92010-05-26 18:11:36 +0200484 switch (fmt->bFormatType) {
Daniel Macke5779992010-03-04 19:46:13 +0100485 case UAC_FORMAT_TYPE_I:
486 case UAC_FORMAT_TYPE_III:
487 err = parse_audio_format_i(chip, fp, format, fmt, iface);
488 break;
489 case UAC_FORMAT_TYPE_II:
490 err = parse_audio_format_ii(chip, fp, format, fmt, iface);
491 break;
492 default:
493 snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
Daniel Mack74754f92010-05-26 18:11:36 +0200494 chip->dev->devnum, fp->iface, fp->altsetting,
495 fmt->bFormatType);
Daniel Mack8d091242010-05-26 18:11:37 +0200496 return -ENOTSUPP;
Daniel Macke5779992010-03-04 19:46:13 +0100497 }
Daniel Mack74754f92010-05-26 18:11:36 +0200498 fp->fmt_type = fmt->bFormatType;
Daniel Macke5779992010-03-04 19:46:13 +0100499 if (err < 0)
500 return err;
501#if 1
502 /* FIXME: temporary hack for extigy/audigy 2 nx/zs */
503 /* extigy apparently supports sample rates other than 48k
504 * but not in ordinary way. so we enable only 48k atm.
505 */
506 if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
507 chip->usb_id == USB_ID(0x041e, 0x3020) ||
508 chip->usb_id == USB_ID(0x041e, 0x3061)) {
Daniel Mack74754f92010-05-26 18:11:36 +0200509 if (fmt->bFormatType == UAC_FORMAT_TYPE_I &&
Daniel Macke5779992010-03-04 19:46:13 +0100510 fp->rates != SNDRV_PCM_RATE_48000 &&
511 fp->rates != SNDRV_PCM_RATE_96000)
Daniel Mack8d091242010-05-26 18:11:37 +0200512 return -ENOTSUPP;
Daniel Macke5779992010-03-04 19:46:13 +0100513 }
514#endif
515 return 0;
516}
517