Commit | Line | Data |
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e5779998 DM |
1 | /* |
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> | |
36db0456 | 19 | #include <linux/slab.h> |
e5779998 DM |
20 | #include <linux/usb.h> |
21 | #include <linux/usb/audio.h> | |
7e847894 | 22 | #include <linux/usb/audio-v2.h> |
e5779998 DM |
23 | |
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" | |
79f920fb | 32 | #include "clock.h" |
ee95cb61 | 33 | #include "format.h" |
e5779998 DM |
34 | |
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 | */ | |
29088fef | 44 | static u64 parse_audio_format_i_type(struct snd_usb_audio *chip, |
e5779998 | 45 | struct audioformat *fp, |
8f898e92 | 46 | unsigned int format, void *_fmt) |
e5779998 | 47 | { |
e5779998 | 48 | int sample_width, sample_bytes; |
717bfb5f | 49 | u64 pcm_formats = 0; |
e5779998 | 50 | |
8f898e92 | 51 | switch (fp->protocol) { |
a2acad82 CL |
52 | case UAC_VERSION_1: |
53 | default: { | |
e5779998 DM |
54 | struct uac_format_type_i_discrete_descriptor *fmt = _fmt; |
55 | sample_width = fmt->bBitResolution; | |
56 | sample_bytes = fmt->bSubframeSize; | |
29088fef | 57 | format = 1 << format; |
e5779998 DM |
58 | 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; | |
717bfb5f DM |
65 | |
66 | if (format & UAC2_FORMAT_TYPE_I_RAW_DATA) | |
67 | pcm_formats |= SNDRV_PCM_FMTBIT_SPECIAL; | |
68 | ||
29088fef | 69 | format <<= 1; |
e5779998 DM |
70 | break; |
71 | } | |
e5779998 DM |
72 | } |
73 | ||
717bfb5f DM |
74 | if ((pcm_formats == 0) && |
75 | (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED))) { | |
29088fef | 76 | /* some devices don't define this correctly... */ |
0ba41d91 TI |
77 | usb_audio_info(chip, "%u:%d : format type 0 is detected, processed as PCM\n", |
78 | fp->iface, fp->altsetting); | |
29088fef CL |
79 | format = 1 << UAC_FORMAT_TYPE_I_PCM; |
80 | } | |
81 | if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) { | |
061b869e CL |
82 | if (chip->usb_id == USB_ID(0x0582, 0x0016) /* Edirol SD-90 */ && |
83 | sample_width == 24 && sample_bytes == 2) | |
84 | sample_bytes = 3; | |
85 | else if (sample_width > sample_bytes * 8) { | |
0ba41d91 TI |
86 | usb_audio_info(chip, "%u:%d : sample bitwidth %d in over sample bytes %d\n", |
87 | fp->iface, fp->altsetting, | |
88 | sample_width, sample_bytes); | |
e5779998 DM |
89 | } |
90 | /* check the format byte size */ | |
91 | switch (sample_bytes) { | |
92 | case 1: | |
29088fef | 93 | pcm_formats |= SNDRV_PCM_FMTBIT_S8; |
e5779998 DM |
94 | break; |
95 | case 2: | |
96 | if (snd_usb_is_big_endian_format(chip, fp)) | |
29088fef | 97 | pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE; /* grrr, big endian!! */ |
e5779998 | 98 | else |
29088fef | 99 | pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE; |
e5779998 DM |
100 | break; |
101 | case 3: | |
102 | if (snd_usb_is_big_endian_format(chip, fp)) | |
29088fef | 103 | pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE; /* grrr, big endian!! */ |
e5779998 | 104 | else |
29088fef | 105 | pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE; |
e5779998 DM |
106 | break; |
107 | case 4: | |
29088fef | 108 | pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE; |
e5779998 DM |
109 | break; |
110 | default: | |
0ba41d91 TI |
111 | usb_audio_info(chip, |
112 | "%u:%d : unsupported sample bitwidth %d in %d bytes\n", | |
113 | fp->iface, fp->altsetting, | |
114 | sample_width, sample_bytes); | |
e5779998 DM |
115 | break; |
116 | } | |
29088fef CL |
117 | } |
118 | if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) { | |
e5779998 DM |
119 | /* Dallas DS4201 workaround: it advertises U8 format, but really |
120 | supports S8. */ | |
121 | if (chip->usb_id == USB_ID(0x04fa, 0x4201)) | |
29088fef CL |
122 | pcm_formats |= SNDRV_PCM_FMTBIT_S8; |
123 | else | |
124 | pcm_formats |= SNDRV_PCM_FMTBIT_U8; | |
125 | } | |
126 | if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) { | |
127 | pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; | |
128 | } | |
129 | if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) { | |
130 | pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW; | |
131 | } | |
132 | if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) { | |
133 | pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW; | |
134 | } | |
135 | if (format & ~0x3f) { | |
0ba41d91 TI |
136 | usb_audio_info(chip, |
137 | "%u:%d : unsupported format bits %#x\n", | |
138 | fp->iface, fp->altsetting, format); | |
e5779998 | 139 | } |
126825e7 DM |
140 | |
141 | pcm_formats |= snd_usb_interface_dsd_format_quirks(chip, fp, sample_bytes); | |
142 | ||
29088fef | 143 | return pcm_formats; |
e5779998 DM |
144 | } |
145 | ||
146 | ||
147 | /* | |
148 | * parse the format descriptor and stores the possible sample rates | |
149 | * on the audioformat table (audio class v1). | |
150 | * | |
151 | * @dev: usb device | |
152 | * @fp: audioformat record | |
153 | * @fmt: the format descriptor | |
154 | * @offset: the start offset of descriptor pointing the rate type | |
155 | * (7 for type I and II, 8 for type II) | |
156 | */ | |
157 | static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp, | |
158 | unsigned char *fmt, int offset) | |
159 | { | |
160 | int nr_rates = fmt[offset]; | |
161 | ||
162 | if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) { | |
0ba41d91 TI |
163 | usb_audio_err(chip, |
164 | "%u:%d : invalid UAC_FORMAT_TYPE desc\n", | |
165 | fp->iface, fp->altsetting); | |
8ad10dc6 | 166 | return -EINVAL; |
e5779998 DM |
167 | } |
168 | ||
169 | if (nr_rates) { | |
170 | /* | |
171 | * build the rate table and bitmap flags | |
172 | */ | |
173 | int r, idx; | |
174 | ||
175 | fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); | |
176 | if (fp->rate_table == NULL) { | |
0ba41d91 | 177 | usb_audio_err(chip, "cannot malloc\n"); |
8ad10dc6 | 178 | return -ENOMEM; |
e5779998 DM |
179 | } |
180 | ||
181 | fp->nr_rates = 0; | |
182 | fp->rate_min = fp->rate_max = 0; | |
183 | for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { | |
184 | unsigned int rate = combine_triple(&fmt[idx]); | |
185 | if (!rate) | |
186 | continue; | |
187 | /* C-Media CM6501 mislabels its 96 kHz altsetting */ | |
8129e79e | 188 | /* Terratec Aureon 7.1 USB C-Media 6206, too */ |
e5779998 DM |
189 | if (rate == 48000 && nr_rates == 1 && |
190 | (chip->usb_id == USB_ID(0x0d8c, 0x0201) || | |
8129e79e WB |
191 | chip->usb_id == USB_ID(0x0d8c, 0x0102) || |
192 | chip->usb_id == USB_ID(0x0ccd, 0x00b1)) && | |
e5779998 DM |
193 | fp->altsetting == 5 && fp->maxpacksize == 392) |
194 | rate = 96000; | |
8c4b79cf PH |
195 | /* Creative VF0420/VF0470 Live Cams report 16 kHz instead of 8kHz */ |
196 | if (rate == 16000 && | |
197 | (chip->usb_id == USB_ID(0x041e, 0x4064) || | |
198 | chip->usb_id == USB_ID(0x041e, 0x4068))) | |
e5779998 DM |
199 | rate = 8000; |
200 | ||
201 | fp->rate_table[fp->nr_rates] = rate; | |
202 | if (!fp->rate_min || rate < fp->rate_min) | |
203 | fp->rate_min = rate; | |
204 | if (!fp->rate_max || rate > fp->rate_max) | |
205 | fp->rate_max = rate; | |
206 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); | |
207 | fp->nr_rates++; | |
208 | } | |
209 | if (!fp->nr_rates) { | |
210 | hwc_debug("All rates were zero. Skipping format!\n"); | |
8ad10dc6 | 211 | return -EINVAL; |
e5779998 DM |
212 | } |
213 | } else { | |
214 | /* continuous rates */ | |
215 | fp->rates = SNDRV_PCM_RATE_CONTINUOUS; | |
216 | fp->rate_min = combine_triple(&fmt[offset + 1]); | |
217 | fp->rate_max = combine_triple(&fmt[offset + 4]); | |
218 | } | |
219 | return 0; | |
220 | } | |
221 | ||
67c10366 DM |
222 | /* |
223 | * Helper function to walk the array of sample rate triplets reported by | |
224 | * the device. The problem is that we need to parse whole array first to | |
225 | * get to know how many sample rates we have to expect. | |
226 | * Then fp->rate_table can be allocated and filled. | |
227 | */ | |
0ba41d91 TI |
228 | static int parse_uac2_sample_rate_range(struct snd_usb_audio *chip, |
229 | struct audioformat *fp, int nr_triplets, | |
67c10366 DM |
230 | const unsigned char *data) |
231 | { | |
232 | int i, nr_rates = 0; | |
233 | ||
234 | fp->rates = fp->rate_min = fp->rate_max = 0; | |
235 | ||
236 | for (i = 0; i < nr_triplets; i++) { | |
237 | int min = combine_quad(&data[2 + 12 * i]); | |
238 | int max = combine_quad(&data[6 + 12 * i]); | |
239 | int res = combine_quad(&data[10 + 12 * i]); | |
4fa0e81b | 240 | unsigned int rate; |
67c10366 DM |
241 | |
242 | if ((max < 0) || (min < 0) || (res < 0) || (max < min)) | |
243 | continue; | |
244 | ||
245 | /* | |
246 | * for ranges with res == 1, we announce a continuous sample | |
247 | * rate range, and this function should return 0 for no further | |
248 | * parsing. | |
249 | */ | |
250 | if (res == 1) { | |
251 | fp->rate_min = min; | |
252 | fp->rate_max = max; | |
253 | fp->rates = SNDRV_PCM_RATE_CONTINUOUS; | |
254 | return 0; | |
255 | } | |
256 | ||
257 | for (rate = min; rate <= max; rate += res) { | |
258 | if (fp->rate_table) | |
259 | fp->rate_table[nr_rates] = rate; | |
260 | if (!fp->rate_min || rate < fp->rate_min) | |
261 | fp->rate_min = rate; | |
262 | if (!fp->rate_max || rate > fp->rate_max) | |
263 | fp->rate_max = rate; | |
264 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); | |
265 | ||
266 | nr_rates++; | |
8866f405 | 267 | if (nr_rates >= MAX_NR_RATES) { |
0ba41d91 | 268 | usb_audio_err(chip, "invalid uac2 rates\n"); |
4fa0e81b XW |
269 | break; |
270 | } | |
67c10366 DM |
271 | |
272 | /* avoid endless loop */ | |
273 | if (res == 0) | |
274 | break; | |
275 | } | |
276 | } | |
277 | ||
278 | return nr_rates; | |
279 | } | |
280 | ||
e5779998 DM |
281 | /* |
282 | * parse the format descriptor and stores the possible sample rates | |
283 | * on the audioformat table (audio class v2). | |
284 | */ | |
285 | static int parse_audio_format_rates_v2(struct snd_usb_audio *chip, | |
3d8d4dcf | 286 | struct audioformat *fp) |
e5779998 DM |
287 | { |
288 | struct usb_device *dev = chip->dev; | |
289 | unsigned char tmp[2], *data; | |
67c10366 | 290 | int nr_triplets, data_size, ret = 0; |
06ffc1eb | 291 | int clock = snd_usb_clock_find_source(chip, fp->clock, false); |
e5779998 | 292 | |
d07140ba | 293 | if (clock < 0) { |
0ba41d91 TI |
294 | dev_err(&dev->dev, |
295 | "%s(): unable to find clock source (clock %d)\n", | |
d07140ba DM |
296 | __func__, clock); |
297 | goto err; | |
298 | } | |
299 | ||
e5779998 DM |
300 | /* get the number of sample rates first by only fetching 2 bytes */ |
301 | ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, | |
302 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, | |
11bcbc44 DM |
303 | UAC2_CS_CONTROL_SAM_FREQ << 8, |
304 | snd_usb_ctrl_intf(chip) | (clock << 8), | |
17d900c4 | 305 | tmp, sizeof(tmp)); |
e5779998 DM |
306 | |
307 | if (ret < 0) { | |
0ba41d91 TI |
308 | dev_err(&dev->dev, |
309 | "%s(): unable to retrieve number of sample rates (clock %d)\n", | |
79f920fb | 310 | __func__, clock); |
e5779998 DM |
311 | goto err; |
312 | } | |
313 | ||
67c10366 DM |
314 | nr_triplets = (tmp[1] << 8) | tmp[0]; |
315 | data_size = 2 + 12 * nr_triplets; | |
e5779998 DM |
316 | data = kzalloc(data_size, GFP_KERNEL); |
317 | if (!data) { | |
318 | ret = -ENOMEM; | |
319 | goto err; | |
320 | } | |
321 | ||
322 | /* now get the full information */ | |
323 | ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, | |
79f920fb | 324 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, |
11bcbc44 DM |
325 | UAC2_CS_CONTROL_SAM_FREQ << 8, |
326 | snd_usb_ctrl_intf(chip) | (clock << 8), | |
17d900c4 | 327 | data, data_size); |
e5779998 DM |
328 | |
329 | if (ret < 0) { | |
0ba41d91 TI |
330 | dev_err(&dev->dev, |
331 | "%s(): unable to retrieve sample rate range (clock %d)\n", | |
79f920fb | 332 | __func__, clock); |
e5779998 DM |
333 | ret = -EINVAL; |
334 | goto err_free; | |
335 | } | |
336 | ||
67c10366 DM |
337 | /* Call the triplet parser, and make sure fp->rate_table is NULL. |
338 | * We just use the return value to know how many sample rates we | |
339 | * will have to deal with. */ | |
340 | kfree(fp->rate_table); | |
341 | fp->rate_table = NULL; | |
0ba41d91 | 342 | fp->nr_rates = parse_uac2_sample_rate_range(chip, fp, nr_triplets, data); |
67c10366 DM |
343 | |
344 | if (fp->nr_rates == 0) { | |
345 | /* SNDRV_PCM_RATE_CONTINUOUS */ | |
346 | ret = 0; | |
347 | goto err_free; | |
348 | } | |
349 | ||
350 | fp->rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL); | |
e5779998 DM |
351 | if (!fp->rate_table) { |
352 | ret = -ENOMEM; | |
353 | goto err_free; | |
354 | } | |
355 | ||
67c10366 DM |
356 | /* Call the triplet parser again, but this time, fp->rate_table is |
357 | * allocated, so the rates will be stored */ | |
0ba41d91 | 358 | parse_uac2_sample_rate_range(chip, fp, nr_triplets, data); |
e5779998 DM |
359 | |
360 | err_free: | |
361 | kfree(data); | |
362 | err: | |
363 | return ret; | |
364 | } | |
365 | ||
366 | /* | |
367 | * parse the format type I and III descriptors | |
368 | */ | |
369 | static int parse_audio_format_i(struct snd_usb_audio *chip, | |
2fcdb06d | 370 | struct audioformat *fp, unsigned int format, |
8f898e92 | 371 | struct uac_format_type_i_continuous_descriptor *fmt) |
e5779998 | 372 | { |
74c34ca1 EZ |
373 | snd_pcm_format_t pcm_format; |
374 | int ret; | |
e5779998 DM |
375 | |
376 | if (fmt->bFormatType == UAC_FORMAT_TYPE_III) { | |
377 | /* FIXME: the format type is really IECxxx | |
378 | * but we give normal PCM format to get the existing | |
379 | * apps working... | |
380 | */ | |
381 | switch (chip->usb_id) { | |
382 | ||
383 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
384 | if (chip->setup == 0x00 && | |
385 | fp->altsetting == 6) | |
386 | pcm_format = SNDRV_PCM_FORMAT_S16_BE; | |
387 | else | |
388 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
389 | break; | |
390 | default: | |
391 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
392 | } | |
74c34ca1 | 393 | fp->formats = pcm_format_to_bits(pcm_format); |
e5779998 | 394 | } else { |
8f898e92 | 395 | fp->formats = parse_audio_format_i_type(chip, fp, format, fmt); |
29088fef | 396 | if (!fp->formats) |
8ad10dc6 | 397 | return -EINVAL; |
e5779998 DM |
398 | } |
399 | ||
e5779998 DM |
400 | /* gather possible sample rates */ |
401 | /* audio class v1 reports possible sample rates as part of the | |
402 | * proprietary class specific descriptor. | |
403 | * audio class v2 uses class specific EP0 range requests for that. | |
404 | */ | |
8f898e92 | 405 | switch (fp->protocol) { |
a2acad82 | 406 | default: |
e5779998 DM |
407 | case UAC_VERSION_1: |
408 | fp->channels = fmt->bNrChannels; | |
74754f97 | 409 | ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7); |
e5779998 DM |
410 | break; |
411 | case UAC_VERSION_2: | |
412 | /* fp->channels is already set in this case */ | |
3d8d4dcf | 413 | ret = parse_audio_format_rates_v2(chip, fp); |
e5779998 DM |
414 | break; |
415 | } | |
416 | ||
417 | if (fp->channels < 1) { | |
0ba41d91 TI |
418 | usb_audio_err(chip, |
419 | "%u:%d : invalid channels %d\n", | |
420 | fp->iface, fp->altsetting, fp->channels); | |
8ad10dc6 | 421 | return -EINVAL; |
e5779998 DM |
422 | } |
423 | ||
424 | return ret; | |
425 | } | |
426 | ||
427 | /* | |
428 | * parse the format type II descriptor | |
429 | */ | |
430 | static int parse_audio_format_ii(struct snd_usb_audio *chip, | |
431 | struct audioformat *fp, | |
8f898e92 | 432 | int format, void *_fmt) |
e5779998 DM |
433 | { |
434 | int brate, framesize, ret; | |
e5779998 DM |
435 | |
436 | switch (format) { | |
437 | case UAC_FORMAT_TYPE_II_AC3: | |
438 | /* FIXME: there is no AC3 format defined yet */ | |
015eb0b0 CL |
439 | // fp->formats = SNDRV_PCM_FMTBIT_AC3; |
440 | fp->formats = SNDRV_PCM_FMTBIT_U8; /* temporary hack to receive byte streams */ | |
e5779998 DM |
441 | break; |
442 | case UAC_FORMAT_TYPE_II_MPEG: | |
015eb0b0 | 443 | fp->formats = SNDRV_PCM_FMTBIT_MPEG; |
e5779998 DM |
444 | break; |
445 | default: | |
0ba41d91 TI |
446 | usb_audio_info(chip, |
447 | "%u:%d : unknown format tag %#x is detected. processed as MPEG.\n", | |
448 | fp->iface, fp->altsetting, format); | |
015eb0b0 | 449 | fp->formats = SNDRV_PCM_FMTBIT_MPEG; |
e5779998 DM |
450 | break; |
451 | } | |
452 | ||
453 | fp->channels = 1; | |
454 | ||
8f898e92 | 455 | switch (fp->protocol) { |
a2acad82 | 456 | default: |
e5779998 DM |
457 | case UAC_VERSION_1: { |
458 | struct uac_format_type_ii_discrete_descriptor *fmt = _fmt; | |
459 | brate = le16_to_cpu(fmt->wMaxBitRate); | |
460 | framesize = le16_to_cpu(fmt->wSamplesPerFrame); | |
0ba41d91 | 461 | usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); |
e5779998 DM |
462 | fp->frame_size = framesize; |
463 | ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */ | |
464 | break; | |
465 | } | |
466 | case UAC_VERSION_2: { | |
467 | struct uac_format_type_ii_ext_descriptor *fmt = _fmt; | |
468 | brate = le16_to_cpu(fmt->wMaxBitRate); | |
469 | framesize = le16_to_cpu(fmt->wSamplesPerFrame); | |
0ba41d91 | 470 | usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); |
e5779998 | 471 | fp->frame_size = framesize; |
3d8d4dcf | 472 | ret = parse_audio_format_rates_v2(chip, fp); |
e5779998 DM |
473 | break; |
474 | } | |
475 | } | |
476 | ||
477 | return ret; | |
478 | } | |
479 | ||
2fcdb06d DM |
480 | int snd_usb_parse_audio_format(struct snd_usb_audio *chip, |
481 | struct audioformat *fp, unsigned int format, | |
482 | struct uac_format_type_i_continuous_descriptor *fmt, | |
8f898e92 | 483 | int stream) |
e5779998 DM |
484 | { |
485 | int err; | |
486 | ||
74754f97 | 487 | switch (fmt->bFormatType) { |
e5779998 DM |
488 | case UAC_FORMAT_TYPE_I: |
489 | case UAC_FORMAT_TYPE_III: | |
8f898e92 | 490 | err = parse_audio_format_i(chip, fp, format, fmt); |
e5779998 DM |
491 | break; |
492 | case UAC_FORMAT_TYPE_II: | |
8f898e92 | 493 | err = parse_audio_format_ii(chip, fp, format, fmt); |
e5779998 DM |
494 | break; |
495 | default: | |
0ba41d91 TI |
496 | usb_audio_info(chip, |
497 | "%u:%d : format type %d is not supported yet\n", | |
498 | fp->iface, fp->altsetting, | |
499 | fmt->bFormatType); | |
8d091242 | 500 | return -ENOTSUPP; |
e5779998 | 501 | } |
74754f97 | 502 | fp->fmt_type = fmt->bFormatType; |
e5779998 DM |
503 | if (err < 0) |
504 | return err; | |
505 | #if 1 | |
506 | /* FIXME: temporary hack for extigy/audigy 2 nx/zs */ | |
507 | /* extigy apparently supports sample rates other than 48k | |
508 | * but not in ordinary way. so we enable only 48k atm. | |
509 | */ | |
510 | if (chip->usb_id == USB_ID(0x041e, 0x3000) || | |
511 | chip->usb_id == USB_ID(0x041e, 0x3020) || | |
512 | chip->usb_id == USB_ID(0x041e, 0x3061)) { | |
74754f97 | 513 | if (fmt->bFormatType == UAC_FORMAT_TYPE_I && |
e5779998 DM |
514 | fp->rates != SNDRV_PCM_RATE_48000 && |
515 | fp->rates != SNDRV_PCM_RATE_96000) | |
8d091242 | 516 | return -ENOTSUPP; |
e5779998 DM |
517 | } |
518 | #endif | |
519 | return 0; | |
520 | } | |
521 |