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