Commit | Line | Data |
---|---|---|
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, |
2fcdb06d | 46 | unsigned int format, void *_fmt, |
e5779998 DM |
47 | int protocol) |
48 | { | |
e5779998 | 49 | int sample_width, sample_bytes; |
717bfb5f | 50 | u64 pcm_formats = 0; |
e5779998 DM |
51 | |
52 | switch (protocol) { | |
a2acad82 CL |
53 | case UAC_VERSION_1: |
54 | default: { | |
e5779998 DM |
55 | struct uac_format_type_i_discrete_descriptor *fmt = _fmt; |
56 | sample_width = fmt->bBitResolution; | |
57 | sample_bytes = fmt->bSubframeSize; | |
29088fef | 58 | format = 1 << format; |
e5779998 DM |
59 | 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; | |
717bfb5f DM |
66 | |
67 | if (format & UAC2_FORMAT_TYPE_I_RAW_DATA) | |
68 | pcm_formats |= SNDRV_PCM_FMTBIT_SPECIAL; | |
69 | ||
29088fef | 70 | format <<= 1; |
e5779998 DM |
71 | break; |
72 | } | |
e5779998 DM |
73 | } |
74 | ||
717bfb5f DM |
75 | if ((pcm_formats == 0) && |
76 | (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED))) { | |
29088fef | 77 | /* some devices don't define this correctly... */ |
e5779998 DM |
78 | snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n", |
79 | chip->dev->devnum, fp->iface, fp->altsetting); | |
29088fef CL |
80 | format = 1 << UAC_FORMAT_TYPE_I_PCM; |
81 | } | |
82 | if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) { | |
061b869e CL |
83 | if (chip->usb_id == USB_ID(0x0582, 0x0016) /* Edirol SD-90 */ && |
84 | sample_width == 24 && sample_bytes == 2) | |
85 | sample_bytes = 3; | |
86 | else if (sample_width > sample_bytes * 8) { | |
e5779998 DM |
87 | snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n", |
88 | chip->dev->devnum, fp->iface, fp->altsetting, | |
89 | sample_width, sample_bytes); | |
90 | } | |
91 | /* check the format byte size */ | |
92 | switch (sample_bytes) { | |
93 | case 1: | |
29088fef | 94 | pcm_formats |= SNDRV_PCM_FMTBIT_S8; |
e5779998 DM |
95 | break; |
96 | case 2: | |
97 | if (snd_usb_is_big_endian_format(chip, fp)) | |
29088fef | 98 | pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE; /* grrr, big endian!! */ |
e5779998 | 99 | else |
29088fef | 100 | pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE; |
e5779998 DM |
101 | break; |
102 | case 3: | |
103 | if (snd_usb_is_big_endian_format(chip, fp)) | |
29088fef | 104 | pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE; /* grrr, big endian!! */ |
e5779998 | 105 | else |
29088fef | 106 | pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE; |
e5779998 DM |
107 | break; |
108 | case 4: | |
29088fef | 109 | pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE; |
e5779998 DM |
110 | break; |
111 | default: | |
112 | snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n", | |
113 | chip->dev->devnum, fp->iface, fp->altsetting, | |
114 | sample_width, sample_bytes); | |
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) { | |
136 | snd_printk(KERN_INFO "%d:%u:%d : unsupported format bits %#x\n", | |
e5779998 | 137 | chip->dev->devnum, fp->iface, fp->altsetting, format); |
e5779998 | 138 | } |
29088fef | 139 | return pcm_formats; |
e5779998 DM |
140 | } |
141 | ||
142 | ||
143 | /* | |
144 | * parse the format descriptor and stores the possible sample rates | |
145 | * on the audioformat table (audio class v1). | |
146 | * | |
147 | * @dev: usb device | |
148 | * @fp: audioformat record | |
149 | * @fmt: the format descriptor | |
150 | * @offset: the start offset of descriptor pointing the rate type | |
151 | * (7 for type I and II, 8 for type II) | |
152 | */ | |
153 | static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp, | |
154 | unsigned char *fmt, int offset) | |
155 | { | |
156 | int nr_rates = fmt[offset]; | |
157 | ||
158 | if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) { | |
159 | snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n", | |
160 | chip->dev->devnum, fp->iface, fp->altsetting); | |
8ad10dc6 | 161 | return -EINVAL; |
e5779998 DM |
162 | } |
163 | ||
164 | if (nr_rates) { | |
165 | /* | |
166 | * build the rate table and bitmap flags | |
167 | */ | |
168 | int r, idx; | |
169 | ||
170 | fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); | |
171 | if (fp->rate_table == NULL) { | |
172 | snd_printk(KERN_ERR "cannot malloc\n"); | |
8ad10dc6 | 173 | return -ENOMEM; |
e5779998 DM |
174 | } |
175 | ||
176 | fp->nr_rates = 0; | |
177 | fp->rate_min = fp->rate_max = 0; | |
178 | for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { | |
179 | unsigned int rate = combine_triple(&fmt[idx]); | |
180 | if (!rate) | |
181 | continue; | |
182 | /* C-Media CM6501 mislabels its 96 kHz altsetting */ | |
8129e79e | 183 | /* Terratec Aureon 7.1 USB C-Media 6206, too */ |
e5779998 DM |
184 | if (rate == 48000 && nr_rates == 1 && |
185 | (chip->usb_id == USB_ID(0x0d8c, 0x0201) || | |
8129e79e WB |
186 | chip->usb_id == USB_ID(0x0d8c, 0x0102) || |
187 | chip->usb_id == USB_ID(0x0ccd, 0x00b1)) && | |
e5779998 DM |
188 | fp->altsetting == 5 && fp->maxpacksize == 392) |
189 | rate = 96000; | |
190 | /* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */ | |
191 | if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068)) | |
192 | rate = 8000; | |
193 | ||
194 | fp->rate_table[fp->nr_rates] = rate; | |
195 | if (!fp->rate_min || rate < fp->rate_min) | |
196 | fp->rate_min = rate; | |
197 | if (!fp->rate_max || rate > fp->rate_max) | |
198 | fp->rate_max = rate; | |
199 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); | |
200 | fp->nr_rates++; | |
201 | } | |
202 | if (!fp->nr_rates) { | |
203 | hwc_debug("All rates were zero. Skipping format!\n"); | |
8ad10dc6 | 204 | return -EINVAL; |
e5779998 DM |
205 | } |
206 | } else { | |
207 | /* continuous rates */ | |
208 | fp->rates = SNDRV_PCM_RATE_CONTINUOUS; | |
209 | fp->rate_min = combine_triple(&fmt[offset + 1]); | |
210 | fp->rate_max = combine_triple(&fmt[offset + 4]); | |
211 | } | |
212 | return 0; | |
213 | } | |
214 | ||
67c10366 DM |
215 | /* |
216 | * Helper function to walk the array of sample rate triplets reported by | |
217 | * the device. The problem is that we need to parse whole array first to | |
218 | * get to know how many sample rates we have to expect. | |
219 | * Then fp->rate_table can be allocated and filled. | |
220 | */ | |
221 | static int parse_uac2_sample_rate_range(struct audioformat *fp, int nr_triplets, | |
222 | const unsigned char *data) | |
223 | { | |
224 | int i, nr_rates = 0; | |
225 | ||
226 | fp->rates = fp->rate_min = fp->rate_max = 0; | |
227 | ||
228 | for (i = 0; i < nr_triplets; i++) { | |
229 | int min = combine_quad(&data[2 + 12 * i]); | |
230 | int max = combine_quad(&data[6 + 12 * i]); | |
231 | int res = combine_quad(&data[10 + 12 * i]); | |
4fa0e81b | 232 | unsigned int rate; |
67c10366 DM |
233 | |
234 | if ((max < 0) || (min < 0) || (res < 0) || (max < min)) | |
235 | continue; | |
236 | ||
237 | /* | |
238 | * for ranges with res == 1, we announce a continuous sample | |
239 | * rate range, and this function should return 0 for no further | |
240 | * parsing. | |
241 | */ | |
242 | if (res == 1) { | |
243 | fp->rate_min = min; | |
244 | fp->rate_max = max; | |
245 | fp->rates = SNDRV_PCM_RATE_CONTINUOUS; | |
246 | return 0; | |
247 | } | |
248 | ||
249 | for (rate = min; rate <= max; rate += res) { | |
250 | if (fp->rate_table) | |
251 | fp->rate_table[nr_rates] = rate; | |
252 | if (!fp->rate_min || rate < fp->rate_min) | |
253 | fp->rate_min = rate; | |
254 | if (!fp->rate_max || rate > fp->rate_max) | |
255 | fp->rate_max = rate; | |
256 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); | |
257 | ||
258 | nr_rates++; | |
8866f405 | 259 | if (nr_rates >= MAX_NR_RATES) { |
4fa0e81b XW |
260 | snd_printk(KERN_ERR "invalid uac2 rates\n"); |
261 | break; | |
262 | } | |
67c10366 DM |
263 | |
264 | /* avoid endless loop */ | |
265 | if (res == 0) | |
266 | break; | |
267 | } | |
268 | } | |
269 | ||
270 | return nr_rates; | |
271 | } | |
272 | ||
e5779998 DM |
273 | /* |
274 | * parse the format descriptor and stores the possible sample rates | |
275 | * on the audioformat table (audio class v2). | |
276 | */ | |
277 | static int parse_audio_format_rates_v2(struct snd_usb_audio *chip, | |
3d8d4dcf | 278 | struct audioformat *fp) |
e5779998 DM |
279 | { |
280 | struct usb_device *dev = chip->dev; | |
281 | unsigned char tmp[2], *data; | |
67c10366 | 282 | int nr_triplets, data_size, ret = 0; |
06ffc1eb | 283 | int clock = snd_usb_clock_find_source(chip, fp->clock, false); |
e5779998 | 284 | |
d07140ba DM |
285 | if (clock < 0) { |
286 | snd_printk(KERN_ERR "%s(): unable to find clock source (clock %d)\n", | |
287 | __func__, clock); | |
288 | goto err; | |
289 | } | |
290 | ||
e5779998 DM |
291 | /* get the number of sample rates first by only fetching 2 bytes */ |
292 | ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, | |
293 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, | |
11bcbc44 DM |
294 | UAC2_CS_CONTROL_SAM_FREQ << 8, |
295 | snd_usb_ctrl_intf(chip) | (clock << 8), | |
17d900c4 | 296 | tmp, sizeof(tmp)); |
e5779998 DM |
297 | |
298 | if (ret < 0) { | |
79f920fb DM |
299 | snd_printk(KERN_ERR "%s(): unable to retrieve number of sample rates (clock %d)\n", |
300 | __func__, clock); | |
e5779998 DM |
301 | goto err; |
302 | } | |
303 | ||
67c10366 DM |
304 | nr_triplets = (tmp[1] << 8) | tmp[0]; |
305 | data_size = 2 + 12 * nr_triplets; | |
e5779998 DM |
306 | data = kzalloc(data_size, GFP_KERNEL); |
307 | if (!data) { | |
308 | ret = -ENOMEM; | |
309 | goto err; | |
310 | } | |
311 | ||
312 | /* now get the full information */ | |
313 | ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, | |
79f920fb | 314 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, |
11bcbc44 DM |
315 | UAC2_CS_CONTROL_SAM_FREQ << 8, |
316 | snd_usb_ctrl_intf(chip) | (clock << 8), | |
17d900c4 | 317 | data, data_size); |
e5779998 DM |
318 | |
319 | if (ret < 0) { | |
79f920fb DM |
320 | snd_printk(KERN_ERR "%s(): unable to retrieve sample rate range (clock %d)\n", |
321 | __func__, clock); | |
e5779998 DM |
322 | ret = -EINVAL; |
323 | goto err_free; | |
324 | } | |
325 | ||
67c10366 DM |
326 | /* Call the triplet parser, and make sure fp->rate_table is NULL. |
327 | * We just use the return value to know how many sample rates we | |
328 | * will have to deal with. */ | |
329 | kfree(fp->rate_table); | |
330 | fp->rate_table = NULL; | |
331 | fp->nr_rates = parse_uac2_sample_rate_range(fp, nr_triplets, data); | |
332 | ||
333 | if (fp->nr_rates == 0) { | |
334 | /* SNDRV_PCM_RATE_CONTINUOUS */ | |
335 | ret = 0; | |
336 | goto err_free; | |
337 | } | |
338 | ||
339 | fp->rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL); | |
e5779998 DM |
340 | if (!fp->rate_table) { |
341 | ret = -ENOMEM; | |
342 | goto err_free; | |
343 | } | |
344 | ||
67c10366 DM |
345 | /* Call the triplet parser again, but this time, fp->rate_table is |
346 | * allocated, so the rates will be stored */ | |
347 | parse_uac2_sample_rate_range(fp, nr_triplets, data); | |
e5779998 DM |
348 | |
349 | err_free: | |
350 | kfree(data); | |
351 | err: | |
352 | return ret; | |
353 | } | |
354 | ||
355 | /* | |
356 | * parse the format type I and III descriptors | |
357 | */ | |
358 | static int parse_audio_format_i(struct snd_usb_audio *chip, | |
2fcdb06d | 359 | struct audioformat *fp, unsigned int format, |
74754f97 | 360 | struct uac_format_type_i_continuous_descriptor *fmt, |
e5779998 DM |
361 | struct usb_host_interface *iface) |
362 | { | |
363 | struct usb_interface_descriptor *altsd = get_iface_desc(iface); | |
e5779998 DM |
364 | int protocol = altsd->bInterfaceProtocol; |
365 | int pcm_format, ret; | |
366 | ||
367 | if (fmt->bFormatType == UAC_FORMAT_TYPE_III) { | |
368 | /* FIXME: the format type is really IECxxx | |
369 | * but we give normal PCM format to get the existing | |
370 | * apps working... | |
371 | */ | |
372 | switch (chip->usb_id) { | |
373 | ||
374 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
375 | if (chip->setup == 0x00 && | |
376 | fp->altsetting == 6) | |
377 | pcm_format = SNDRV_PCM_FORMAT_S16_BE; | |
378 | else | |
379 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
380 | break; | |
381 | default: | |
382 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
383 | } | |
29088fef | 384 | fp->formats = 1uLL << pcm_format; |
e5779998 | 385 | } else { |
29088fef CL |
386 | fp->formats = parse_audio_format_i_type(chip, fp, format, |
387 | fmt, protocol); | |
388 | if (!fp->formats) | |
8ad10dc6 | 389 | return -EINVAL; |
e5779998 DM |
390 | } |
391 | ||
e5779998 DM |
392 | /* gather possible sample rates */ |
393 | /* audio class v1 reports possible sample rates as part of the | |
394 | * proprietary class specific descriptor. | |
395 | * audio class v2 uses class specific EP0 range requests for that. | |
396 | */ | |
397 | switch (protocol) { | |
a2acad82 CL |
398 | default: |
399 | snd_printdd(KERN_WARNING "%d:%u:%d : invalid protocol version %d, assuming v1\n", | |
400 | chip->dev->devnum, fp->iface, fp->altsetting, protocol); | |
401 | /* fall through */ | |
e5779998 DM |
402 | case UAC_VERSION_1: |
403 | fp->channels = fmt->bNrChannels; | |
74754f97 | 404 | ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7); |
e5779998 DM |
405 | break; |
406 | case UAC_VERSION_2: | |
407 | /* fp->channels is already set in this case */ | |
3d8d4dcf | 408 | ret = parse_audio_format_rates_v2(chip, fp); |
e5779998 DM |
409 | break; |
410 | } | |
411 | ||
412 | if (fp->channels < 1) { | |
413 | snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n", | |
414 | chip->dev->devnum, fp->iface, fp->altsetting, fp->channels); | |
8ad10dc6 | 415 | return -EINVAL; |
e5779998 DM |
416 | } |
417 | ||
418 | return ret; | |
419 | } | |
420 | ||
421 | /* | |
422 | * parse the format type II descriptor | |
423 | */ | |
424 | static int parse_audio_format_ii(struct snd_usb_audio *chip, | |
425 | struct audioformat *fp, | |
426 | int format, void *_fmt, | |
427 | struct usb_host_interface *iface) | |
428 | { | |
429 | int brate, framesize, ret; | |
430 | struct usb_interface_descriptor *altsd = get_iface_desc(iface); | |
431 | int protocol = altsd->bInterfaceProtocol; | |
432 | ||
433 | switch (format) { | |
434 | case UAC_FORMAT_TYPE_II_AC3: | |
435 | /* FIXME: there is no AC3 format defined yet */ | |
015eb0b0 CL |
436 | // fp->formats = SNDRV_PCM_FMTBIT_AC3; |
437 | fp->formats = SNDRV_PCM_FMTBIT_U8; /* temporary hack to receive byte streams */ | |
e5779998 DM |
438 | break; |
439 | case UAC_FORMAT_TYPE_II_MPEG: | |
015eb0b0 | 440 | fp->formats = SNDRV_PCM_FMTBIT_MPEG; |
e5779998 DM |
441 | break; |
442 | default: | |
443 | snd_printd(KERN_INFO "%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n", | |
444 | chip->dev->devnum, fp->iface, fp->altsetting, format); | |
015eb0b0 | 445 | fp->formats = SNDRV_PCM_FMTBIT_MPEG; |
e5779998 DM |
446 | break; |
447 | } | |
448 | ||
449 | fp->channels = 1; | |
450 | ||
451 | switch (protocol) { | |
a2acad82 CL |
452 | default: |
453 | snd_printdd(KERN_WARNING "%d:%u:%d : invalid protocol version %d, assuming v1\n", | |
454 | chip->dev->devnum, fp->iface, fp->altsetting, protocol); | |
455 | /* fall through */ | |
e5779998 DM |
456 | case UAC_VERSION_1: { |
457 | struct uac_format_type_ii_discrete_descriptor *fmt = _fmt; | |
458 | brate = le16_to_cpu(fmt->wMaxBitRate); | |
459 | framesize = le16_to_cpu(fmt->wSamplesPerFrame); | |
460 | snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); | |
461 | fp->frame_size = framesize; | |
462 | ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */ | |
463 | break; | |
464 | } | |
465 | case UAC_VERSION_2: { | |
466 | struct uac_format_type_ii_ext_descriptor *fmt = _fmt; | |
467 | brate = le16_to_cpu(fmt->wMaxBitRate); | |
468 | framesize = le16_to_cpu(fmt->wSamplesPerFrame); | |
469 | snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); | |
470 | fp->frame_size = framesize; | |
3d8d4dcf | 471 | ret = parse_audio_format_rates_v2(chip, fp); |
e5779998 DM |
472 | break; |
473 | } | |
474 | } | |
475 | ||
476 | return ret; | |
477 | } | |
478 | ||
2fcdb06d DM |
479 | int snd_usb_parse_audio_format(struct snd_usb_audio *chip, |
480 | struct audioformat *fp, unsigned int format, | |
481 | struct uac_format_type_i_continuous_descriptor *fmt, | |
74754f97 | 482 | int stream, struct usb_host_interface *iface) |
e5779998 DM |
483 | { |
484 | int err; | |
485 | ||
74754f97 | 486 | switch (fmt->bFormatType) { |
e5779998 DM |
487 | case UAC_FORMAT_TYPE_I: |
488 | case UAC_FORMAT_TYPE_III: | |
489 | err = parse_audio_format_i(chip, fp, format, fmt, iface); | |
490 | break; | |
491 | case UAC_FORMAT_TYPE_II: | |
492 | err = parse_audio_format_ii(chip, fp, format, fmt, iface); | |
493 | break; | |
494 | default: | |
495 | snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n", | |
74754f97 DM |
496 | chip->dev->devnum, fp->iface, fp->altsetting, |
497 | fmt->bFormatType); | |
8d091242 | 498 | return -ENOTSUPP; |
e5779998 | 499 | } |
74754f97 | 500 | fp->fmt_type = fmt->bFormatType; |
e5779998 DM |
501 | if (err < 0) |
502 | return err; | |
503 | #if 1 | |
504 | /* FIXME: temporary hack for extigy/audigy 2 nx/zs */ | |
505 | /* extigy apparently supports sample rates other than 48k | |
506 | * but not in ordinary way. so we enable only 48k atm. | |
507 | */ | |
508 | if (chip->usb_id == USB_ID(0x041e, 0x3000) || | |
509 | chip->usb_id == USB_ID(0x041e, 0x3020) || | |
510 | chip->usb_id == USB_ID(0x041e, 0x3061)) { | |
74754f97 | 511 | if (fmt->bFormatType == UAC_FORMAT_TYPE_I && |
e5779998 DM |
512 | fp->rates != SNDRV_PCM_RATE_48000 && |
513 | fp->rates != SNDRV_PCM_RATE_96000) | |
8d091242 | 514 | return -ENOTSUPP; |
e5779998 DM |
515 | } |
516 | #endif | |
517 | return 0; | |
518 | } | |
519 |