Commit | Line | Data |
---|---|---|
1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
e5779998 | 2 | /* |
e5779998 DM |
3 | */ |
4 | ||
5 | #include <linux/init.h> | |
36db0456 | 6 | #include <linux/slab.h> |
e5779998 DM |
7 | #include <linux/usb.h> |
8 | #include <linux/usb/audio.h> | |
7e847894 | 9 | #include <linux/usb/audio-v2.h> |
9a2fe9b8 | 10 | #include <linux/usb/audio-v3.h> |
e5779998 DM |
11 | |
12 | #include <sound/core.h> | |
13 | #include <sound/pcm.h> | |
14 | ||
15 | #include "usbaudio.h" | |
16 | #include "card.h" | |
17 | #include "quirks.h" | |
18 | #include "helper.h" | |
19 | #include "debug.h" | |
79f920fb | 20 | #include "clock.h" |
ee95cb61 | 21 | #include "format.h" |
e5779998 DM |
22 | |
23 | /* | |
24 | * parse the audio format type I descriptor | |
25 | * and returns the corresponding pcm format | |
26 | * | |
27 | * @dev: usb device | |
28 | * @fp: audioformat record | |
29 | * @format: the format tag (wFormatTag) | |
9a2fe9b8 | 30 | * @fmt: the format type descriptor (v1/v2) or AudioStreaming descriptor (v3) |
e5779998 | 31 | */ |
29088fef | 32 | static u64 parse_audio_format_i_type(struct snd_usb_audio *chip, |
e5779998 | 33 | struct audioformat *fp, |
9a2fe9b8 | 34 | u64 format, void *_fmt) |
e5779998 | 35 | { |
e5779998 | 36 | int sample_width, sample_bytes; |
717bfb5f | 37 | u64 pcm_formats = 0; |
e5779998 | 38 | |
8f898e92 | 39 | switch (fp->protocol) { |
a2acad82 CL |
40 | case UAC_VERSION_1: |
41 | default: { | |
e5779998 DM |
42 | struct uac_format_type_i_discrete_descriptor *fmt = _fmt; |
43 | sample_width = fmt->bBitResolution; | |
44 | sample_bytes = fmt->bSubframeSize; | |
b44d419b | 45 | format = 1ULL << format; |
e5779998 DM |
46 | break; |
47 | } | |
48 | ||
49 | case UAC_VERSION_2: { | |
50 | struct uac_format_type_i_ext_descriptor *fmt = _fmt; | |
51 | sample_width = fmt->bBitResolution; | |
52 | sample_bytes = fmt->bSubslotSize; | |
717bfb5f | 53 | |
3a572d94 | 54 | if (format & UAC2_FORMAT_TYPE_I_RAW_DATA) { |
717bfb5f | 55 | pcm_formats |= SNDRV_PCM_FMTBIT_SPECIAL; |
3a572d94 JL |
56 | /* flag potentially raw DSD capable altsettings */ |
57 | fp->dsd_raw = true; | |
58 | } | |
717bfb5f | 59 | |
29088fef | 60 | format <<= 1; |
e5779998 DM |
61 | break; |
62 | } | |
9a2fe9b8 RB |
63 | case UAC_VERSION_3: { |
64 | struct uac3_as_header_descriptor *as = _fmt; | |
65 | ||
66 | sample_width = as->bBitResolution; | |
67 | sample_bytes = as->bSubslotSize; | |
68 | ||
69 | if (format & UAC3_FORMAT_TYPE_I_RAW_DATA) | |
70 | pcm_formats |= SNDRV_PCM_FMTBIT_SPECIAL; | |
71 | ||
72 | format <<= 1; | |
73 | break; | |
74 | } | |
e5779998 DM |
75 | } |
76 | ||
c7a13264 JL |
77 | fp->fmt_bits = sample_width; |
78 | ||
717bfb5f DM |
79 | if ((pcm_formats == 0) && |
80 | (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED))) { | |
29088fef | 81 | /* some devices don't define this correctly... */ |
0ba41d91 TI |
82 | usb_audio_info(chip, "%u:%d : format type 0 is detected, processed as PCM\n", |
83 | fp->iface, fp->altsetting); | |
29088fef CL |
84 | format = 1 << UAC_FORMAT_TYPE_I_PCM; |
85 | } | |
86 | if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) { | |
6d1f2f60 TH |
87 | if (((chip->usb_id == USB_ID(0x0582, 0x0016)) || |
88 | /* Edirol SD-90 */ | |
89 | (chip->usb_id == USB_ID(0x0582, 0x000c))) && | |
90 | /* Roland SC-D70 */ | |
061b869e CL |
91 | sample_width == 24 && sample_bytes == 2) |
92 | sample_bytes = 3; | |
93 | else if (sample_width > sample_bytes * 8) { | |
0ba41d91 TI |
94 | usb_audio_info(chip, "%u:%d : sample bitwidth %d in over sample bytes %d\n", |
95 | fp->iface, fp->altsetting, | |
96 | sample_width, sample_bytes); | |
e5779998 DM |
97 | } |
98 | /* check the format byte size */ | |
99 | switch (sample_bytes) { | |
100 | case 1: | |
29088fef | 101 | pcm_formats |= SNDRV_PCM_FMTBIT_S8; |
e5779998 DM |
102 | break; |
103 | case 2: | |
104 | if (snd_usb_is_big_endian_format(chip, fp)) | |
29088fef | 105 | pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE; /* grrr, big endian!! */ |
e5779998 | 106 | else |
29088fef | 107 | pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE; |
e5779998 DM |
108 | break; |
109 | case 3: | |
110 | if (snd_usb_is_big_endian_format(chip, fp)) | |
29088fef | 111 | pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE; /* grrr, big endian!! */ |
e5779998 | 112 | else |
29088fef | 113 | pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE; |
e5779998 DM |
114 | break; |
115 | case 4: | |
29088fef | 116 | pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE; |
e5779998 DM |
117 | break; |
118 | default: | |
0ba41d91 TI |
119 | usb_audio_info(chip, |
120 | "%u:%d : unsupported sample bitwidth %d in %d bytes\n", | |
121 | fp->iface, fp->altsetting, | |
122 | sample_width, sample_bytes); | |
e5779998 DM |
123 | break; |
124 | } | |
29088fef CL |
125 | } |
126 | if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) { | |
e5779998 DM |
127 | /* Dallas DS4201 workaround: it advertises U8 format, but really |
128 | supports S8. */ | |
129 | if (chip->usb_id == USB_ID(0x04fa, 0x4201)) | |
29088fef CL |
130 | pcm_formats |= SNDRV_PCM_FMTBIT_S8; |
131 | else | |
132 | pcm_formats |= SNDRV_PCM_FMTBIT_U8; | |
133 | } | |
134 | if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) { | |
135 | pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; | |
136 | } | |
137 | if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) { | |
138 | pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW; | |
139 | } | |
140 | if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) { | |
141 | pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW; | |
142 | } | |
143 | if (format & ~0x3f) { | |
0ba41d91 | 144 | usb_audio_info(chip, |
9a2fe9b8 | 145 | "%u:%d : unsupported format bits %#llx\n", |
0ba41d91 | 146 | fp->iface, fp->altsetting, format); |
e5779998 | 147 | } |
126825e7 DM |
148 | |
149 | pcm_formats |= snd_usb_interface_dsd_format_quirks(chip, fp, sample_bytes); | |
150 | ||
29088fef | 151 | return pcm_formats; |
e5779998 DM |
152 | } |
153 | ||
154 | ||
155 | /* | |
156 | * parse the format descriptor and stores the possible sample rates | |
157 | * on the audioformat table (audio class v1). | |
158 | * | |
159 | * @dev: usb device | |
160 | * @fp: audioformat record | |
161 | * @fmt: the format descriptor | |
162 | * @offset: the start offset of descriptor pointing the rate type | |
163 | * (7 for type I and II, 8 for type II) | |
164 | */ | |
165 | static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp, | |
166 | unsigned char *fmt, int offset) | |
167 | { | |
168 | int nr_rates = fmt[offset]; | |
169 | ||
170 | if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) { | |
0ba41d91 TI |
171 | usb_audio_err(chip, |
172 | "%u:%d : invalid UAC_FORMAT_TYPE desc\n", | |
173 | fp->iface, fp->altsetting); | |
8ad10dc6 | 174 | return -EINVAL; |
e5779998 DM |
175 | } |
176 | ||
177 | if (nr_rates) { | |
178 | /* | |
179 | * build the rate table and bitmap flags | |
180 | */ | |
181 | int r, idx; | |
182 | ||
6da2ec56 KC |
183 | fp->rate_table = kmalloc_array(nr_rates, sizeof(int), |
184 | GFP_KERNEL); | |
1bc00f32 | 185 | if (fp->rate_table == NULL) |
8ad10dc6 | 186 | return -ENOMEM; |
e5779998 DM |
187 | |
188 | fp->nr_rates = 0; | |
189 | fp->rate_min = fp->rate_max = 0; | |
190 | for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { | |
191 | unsigned int rate = combine_triple(&fmt[idx]); | |
192 | if (!rate) | |
193 | continue; | |
194 | /* C-Media CM6501 mislabels its 96 kHz altsetting */ | |
8129e79e | 195 | /* Terratec Aureon 7.1 USB C-Media 6206, too */ |
e5779998 DM |
196 | if (rate == 48000 && nr_rates == 1 && |
197 | (chip->usb_id == USB_ID(0x0d8c, 0x0201) || | |
8129e79e WB |
198 | chip->usb_id == USB_ID(0x0d8c, 0x0102) || |
199 | chip->usb_id == USB_ID(0x0ccd, 0x00b1)) && | |
e5779998 DM |
200 | fp->altsetting == 5 && fp->maxpacksize == 392) |
201 | rate = 96000; | |
8c4b79cf PH |
202 | /* Creative VF0420/VF0470 Live Cams report 16 kHz instead of 8kHz */ |
203 | if (rate == 16000 && | |
204 | (chip->usb_id == USB_ID(0x041e, 0x4064) || | |
205 | chip->usb_id == USB_ID(0x041e, 0x4068))) | |
e5779998 DM |
206 | rate = 8000; |
207 | ||
208 | fp->rate_table[fp->nr_rates] = rate; | |
209 | if (!fp->rate_min || rate < fp->rate_min) | |
210 | fp->rate_min = rate; | |
211 | if (!fp->rate_max || rate > fp->rate_max) | |
212 | fp->rate_max = rate; | |
213 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); | |
214 | fp->nr_rates++; | |
215 | } | |
216 | if (!fp->nr_rates) { | |
217 | hwc_debug("All rates were zero. Skipping format!\n"); | |
8ad10dc6 | 218 | return -EINVAL; |
e5779998 DM |
219 | } |
220 | } else { | |
221 | /* continuous rates */ | |
222 | fp->rates = SNDRV_PCM_RATE_CONTINUOUS; | |
223 | fp->rate_min = combine_triple(&fmt[offset + 1]); | |
224 | fp->rate_max = combine_triple(&fmt[offset + 4]); | |
225 | } | |
226 | return 0; | |
227 | } | |
228 | ||
67c10366 DM |
229 | /* |
230 | * Helper function to walk the array of sample rate triplets reported by | |
231 | * the device. The problem is that we need to parse whole array first to | |
232 | * get to know how many sample rates we have to expect. | |
233 | * Then fp->rate_table can be allocated and filled. | |
234 | */ | |
0ba41d91 TI |
235 | static int parse_uac2_sample_rate_range(struct snd_usb_audio *chip, |
236 | struct audioformat *fp, int nr_triplets, | |
67c10366 DM |
237 | const unsigned char *data) |
238 | { | |
239 | int i, nr_rates = 0; | |
240 | ||
241 | fp->rates = fp->rate_min = fp->rate_max = 0; | |
242 | ||
243 | for (i = 0; i < nr_triplets; i++) { | |
244 | int min = combine_quad(&data[2 + 12 * i]); | |
245 | int max = combine_quad(&data[6 + 12 * i]); | |
246 | int res = combine_quad(&data[10 + 12 * i]); | |
4fa0e81b | 247 | unsigned int rate; |
67c10366 DM |
248 | |
249 | if ((max < 0) || (min < 0) || (res < 0) || (max < min)) | |
250 | continue; | |
251 | ||
252 | /* | |
253 | * for ranges with res == 1, we announce a continuous sample | |
254 | * rate range, and this function should return 0 for no further | |
255 | * parsing. | |
256 | */ | |
257 | if (res == 1) { | |
258 | fp->rate_min = min; | |
259 | fp->rate_max = max; | |
260 | fp->rates = SNDRV_PCM_RATE_CONTINUOUS; | |
261 | return 0; | |
262 | } | |
263 | ||
264 | for (rate = min; rate <= max; rate += res) { | |
265 | if (fp->rate_table) | |
266 | fp->rate_table[nr_rates] = rate; | |
267 | if (!fp->rate_min || rate < fp->rate_min) | |
268 | fp->rate_min = rate; | |
269 | if (!fp->rate_max || rate > fp->rate_max) | |
270 | fp->rate_max = rate; | |
271 | fp->rates |= snd_pcm_rate_to_rate_bit(rate); | |
272 | ||
273 | nr_rates++; | |
8866f405 | 274 | if (nr_rates >= MAX_NR_RATES) { |
0ba41d91 | 275 | usb_audio_err(chip, "invalid uac2 rates\n"); |
4fa0e81b XW |
276 | break; |
277 | } | |
67c10366 DM |
278 | |
279 | /* avoid endless loop */ | |
280 | if (res == 0) | |
281 | break; | |
282 | } | |
283 | } | |
284 | ||
285 | return nr_rates; | |
286 | } | |
287 | ||
d4bd3053 NL |
288 | /* Line6 Helix series don't support the UAC2_CS_RANGE usb function |
289 | * call. Return a static table of known clock rates. | |
290 | */ | |
291 | static int line6_parse_audio_format_rates_quirk(struct snd_usb_audio *chip, | |
292 | struct audioformat *fp) | |
293 | { | |
294 | switch (chip->usb_id) { | |
295 | case USB_ID(0x0E41, 0x4241): /* Line6 Helix */ | |
296 | case USB_ID(0x0E41, 0x4242): /* Line6 Helix Rack */ | |
297 | case USB_ID(0x0E41, 0x4244): /* Line6 Helix LT */ | |
298 | case USB_ID(0x0E41, 0x4246): /* Line6 HX-Stomp */ | |
299 | /* supported rates: 48Khz */ | |
300 | kfree(fp->rate_table); | |
301 | fp->rate_table = kmalloc(sizeof(int), GFP_KERNEL); | |
302 | if (!fp->rate_table) | |
303 | return -ENOMEM; | |
304 | fp->nr_rates = 1; | |
305 | fp->rate_min = 48000; | |
306 | fp->rate_max = 48000; | |
307 | fp->rates = SNDRV_PCM_RATE_48000; | |
308 | fp->rate_table[0] = 48000; | |
309 | return 0; | |
310 | } | |
311 | ||
312 | return -ENODEV; | |
313 | } | |
314 | ||
e5779998 DM |
315 | /* |
316 | * parse the format descriptor and stores the possible sample rates | |
9a2fe9b8 | 317 | * on the audioformat table (audio class v2 and v3). |
e5779998 | 318 | */ |
9a2fe9b8 | 319 | static int parse_audio_format_rates_v2v3(struct snd_usb_audio *chip, |
3d8d4dcf | 320 | struct audioformat *fp) |
e5779998 DM |
321 | { |
322 | struct usb_device *dev = chip->dev; | |
323 | unsigned char tmp[2], *data; | |
d4bd3053 | 324 | int nr_triplets, data_size, ret = 0, ret_l6; |
9a2fe9b8 RB |
325 | int clock = snd_usb_clock_find_source(chip, fp->protocol, |
326 | fp->clock, false); | |
e5779998 | 327 | |
d07140ba | 328 | if (clock < 0) { |
0ba41d91 TI |
329 | dev_err(&dev->dev, |
330 | "%s(): unable to find clock source (clock %d)\n", | |
d07140ba DM |
331 | __func__, clock); |
332 | goto err; | |
333 | } | |
334 | ||
e5779998 DM |
335 | /* get the number of sample rates first by only fetching 2 bytes */ |
336 | ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, | |
337 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, | |
11bcbc44 DM |
338 | UAC2_CS_CONTROL_SAM_FREQ << 8, |
339 | snd_usb_ctrl_intf(chip) | (clock << 8), | |
17d900c4 | 340 | tmp, sizeof(tmp)); |
e5779998 DM |
341 | |
342 | if (ret < 0) { | |
d4bd3053 NL |
343 | /* line6 helix devices don't support UAC2_CS_CONTROL_SAM_FREQ call */ |
344 | ret_l6 = line6_parse_audio_format_rates_quirk(chip, fp); | |
345 | if (ret_l6 == -ENODEV) { | |
346 | /* no line6 device found continue showing the error */ | |
347 | dev_err(&dev->dev, | |
348 | "%s(): unable to retrieve number of sample rates (clock %d)\n", | |
349 | __func__, clock); | |
350 | goto err; | |
351 | } | |
352 | if (ret_l6 == 0) { | |
353 | dev_info(&dev->dev, | |
354 | "%s(): unable to retrieve number of sample rates: set it to a predefined value (clock %d).\n", | |
79f920fb | 355 | __func__, clock); |
d4bd3053 NL |
356 | return 0; |
357 | } | |
358 | ret = ret_l6; | |
e5779998 DM |
359 | goto err; |
360 | } | |
361 | ||
67c10366 DM |
362 | nr_triplets = (tmp[1] << 8) | tmp[0]; |
363 | data_size = 2 + 12 * nr_triplets; | |
e5779998 DM |
364 | data = kzalloc(data_size, GFP_KERNEL); |
365 | if (!data) { | |
366 | ret = -ENOMEM; | |
367 | goto err; | |
368 | } | |
369 | ||
370 | /* now get the full information */ | |
371 | ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, | |
79f920fb | 372 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, |
11bcbc44 DM |
373 | UAC2_CS_CONTROL_SAM_FREQ << 8, |
374 | snd_usb_ctrl_intf(chip) | (clock << 8), | |
17d900c4 | 375 | data, data_size); |
e5779998 DM |
376 | |
377 | if (ret < 0) { | |
0ba41d91 TI |
378 | dev_err(&dev->dev, |
379 | "%s(): unable to retrieve sample rate range (clock %d)\n", | |
79f920fb | 380 | __func__, clock); |
e5779998 DM |
381 | ret = -EINVAL; |
382 | goto err_free; | |
383 | } | |
384 | ||
67c10366 DM |
385 | /* Call the triplet parser, and make sure fp->rate_table is NULL. |
386 | * We just use the return value to know how many sample rates we | |
387 | * will have to deal with. */ | |
388 | kfree(fp->rate_table); | |
389 | fp->rate_table = NULL; | |
0ba41d91 | 390 | fp->nr_rates = parse_uac2_sample_rate_range(chip, fp, nr_triplets, data); |
67c10366 DM |
391 | |
392 | if (fp->nr_rates == 0) { | |
393 | /* SNDRV_PCM_RATE_CONTINUOUS */ | |
394 | ret = 0; | |
395 | goto err_free; | |
396 | } | |
397 | ||
6da2ec56 | 398 | fp->rate_table = kmalloc_array(fp->nr_rates, sizeof(int), GFP_KERNEL); |
e5779998 DM |
399 | if (!fp->rate_table) { |
400 | ret = -ENOMEM; | |
401 | goto err_free; | |
402 | } | |
403 | ||
67c10366 DM |
404 | /* Call the triplet parser again, but this time, fp->rate_table is |
405 | * allocated, so the rates will be stored */ | |
0ba41d91 | 406 | parse_uac2_sample_rate_range(chip, fp, nr_triplets, data); |
e5779998 DM |
407 | |
408 | err_free: | |
409 | kfree(data); | |
410 | err: | |
411 | return ret; | |
412 | } | |
413 | ||
414 | /* | |
415 | * parse the format type I and III descriptors | |
416 | */ | |
417 | static int parse_audio_format_i(struct snd_usb_audio *chip, | |
9a2fe9b8 RB |
418 | struct audioformat *fp, u64 format, |
419 | void *_fmt) | |
e5779998 | 420 | { |
74c34ca1 | 421 | snd_pcm_format_t pcm_format; |
9a2fe9b8 | 422 | unsigned int fmt_type; |
74c34ca1 | 423 | int ret; |
e5779998 | 424 | |
9a2fe9b8 RB |
425 | switch (fp->protocol) { |
426 | default: | |
427 | case UAC_VERSION_1: | |
428 | case UAC_VERSION_2: { | |
429 | struct uac_format_type_i_continuous_descriptor *fmt = _fmt; | |
430 | ||
431 | fmt_type = fmt->bFormatType; | |
432 | break; | |
433 | } | |
434 | case UAC_VERSION_3: { | |
435 | /* fp->fmt_type is already set in this case */ | |
436 | fmt_type = fp->fmt_type; | |
437 | break; | |
438 | } | |
439 | } | |
440 | ||
441 | if (fmt_type == UAC_FORMAT_TYPE_III) { | |
e5779998 DM |
442 | /* FIXME: the format type is really IECxxx |
443 | * but we give normal PCM format to get the existing | |
444 | * apps working... | |
445 | */ | |
446 | switch (chip->usb_id) { | |
447 | ||
448 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
449 | if (chip->setup == 0x00 && | |
450 | fp->altsetting == 6) | |
451 | pcm_format = SNDRV_PCM_FORMAT_S16_BE; | |
452 | else | |
453 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
454 | break; | |
455 | default: | |
456 | pcm_format = SNDRV_PCM_FORMAT_S16_LE; | |
457 | } | |
74c34ca1 | 458 | fp->formats = pcm_format_to_bits(pcm_format); |
e5779998 | 459 | } else { |
9a2fe9b8 | 460 | fp->formats = parse_audio_format_i_type(chip, fp, format, _fmt); |
29088fef | 461 | if (!fp->formats) |
8ad10dc6 | 462 | return -EINVAL; |
e5779998 DM |
463 | } |
464 | ||
e5779998 DM |
465 | /* gather possible sample rates */ |
466 | /* audio class v1 reports possible sample rates as part of the | |
467 | * proprietary class specific descriptor. | |
468 | * audio class v2 uses class specific EP0 range requests for that. | |
469 | */ | |
8f898e92 | 470 | switch (fp->protocol) { |
a2acad82 | 471 | default: |
9a2fe9b8 RB |
472 | case UAC_VERSION_1: { |
473 | struct uac_format_type_i_continuous_descriptor *fmt = _fmt; | |
474 | ||
e5779998 | 475 | fp->channels = fmt->bNrChannels; |
74754f97 | 476 | ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7); |
e5779998 | 477 | break; |
9a2fe9b8 | 478 | } |
e5779998 | 479 | case UAC_VERSION_2: |
9a2fe9b8 | 480 | case UAC_VERSION_3: { |
e5779998 | 481 | /* fp->channels is already set in this case */ |
9a2fe9b8 | 482 | ret = parse_audio_format_rates_v2v3(chip, fp); |
e5779998 DM |
483 | break; |
484 | } | |
9a2fe9b8 | 485 | } |
e5779998 DM |
486 | |
487 | if (fp->channels < 1) { | |
0ba41d91 TI |
488 | usb_audio_err(chip, |
489 | "%u:%d : invalid channels %d\n", | |
490 | fp->iface, fp->altsetting, fp->channels); | |
8ad10dc6 | 491 | return -EINVAL; |
e5779998 DM |
492 | } |
493 | ||
494 | return ret; | |
495 | } | |
496 | ||
497 | /* | |
498 | * parse the format type II descriptor | |
499 | */ | |
500 | static int parse_audio_format_ii(struct snd_usb_audio *chip, | |
501 | struct audioformat *fp, | |
9a2fe9b8 | 502 | u64 format, void *_fmt) |
e5779998 DM |
503 | { |
504 | int brate, framesize, ret; | |
e5779998 DM |
505 | |
506 | switch (format) { | |
507 | case UAC_FORMAT_TYPE_II_AC3: | |
508 | /* FIXME: there is no AC3 format defined yet */ | |
015eb0b0 CL |
509 | // fp->formats = SNDRV_PCM_FMTBIT_AC3; |
510 | fp->formats = SNDRV_PCM_FMTBIT_U8; /* temporary hack to receive byte streams */ | |
e5779998 DM |
511 | break; |
512 | case UAC_FORMAT_TYPE_II_MPEG: | |
015eb0b0 | 513 | fp->formats = SNDRV_PCM_FMTBIT_MPEG; |
e5779998 DM |
514 | break; |
515 | default: | |
0ba41d91 | 516 | usb_audio_info(chip, |
9a2fe9b8 | 517 | "%u:%d : unknown format tag %#llx is detected. processed as MPEG.\n", |
0ba41d91 | 518 | fp->iface, fp->altsetting, format); |
015eb0b0 | 519 | fp->formats = SNDRV_PCM_FMTBIT_MPEG; |
e5779998 DM |
520 | break; |
521 | } | |
522 | ||
523 | fp->channels = 1; | |
524 | ||
8f898e92 | 525 | switch (fp->protocol) { |
a2acad82 | 526 | default: |
e5779998 DM |
527 | case UAC_VERSION_1: { |
528 | struct uac_format_type_ii_discrete_descriptor *fmt = _fmt; | |
529 | brate = le16_to_cpu(fmt->wMaxBitRate); | |
530 | framesize = le16_to_cpu(fmt->wSamplesPerFrame); | |
0ba41d91 | 531 | usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); |
e5779998 DM |
532 | fp->frame_size = framesize; |
533 | ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */ | |
534 | break; | |
535 | } | |
536 | case UAC_VERSION_2: { | |
537 | struct uac_format_type_ii_ext_descriptor *fmt = _fmt; | |
538 | brate = le16_to_cpu(fmt->wMaxBitRate); | |
539 | framesize = le16_to_cpu(fmt->wSamplesPerFrame); | |
0ba41d91 | 540 | usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); |
e5779998 | 541 | fp->frame_size = framesize; |
9a2fe9b8 | 542 | ret = parse_audio_format_rates_v2v3(chip, fp); |
e5779998 DM |
543 | break; |
544 | } | |
545 | } | |
546 | ||
547 | return ret; | |
548 | } | |
549 | ||
2fcdb06d | 550 | int snd_usb_parse_audio_format(struct snd_usb_audio *chip, |
9a2fe9b8 | 551 | struct audioformat *fp, u64 format, |
2fcdb06d | 552 | struct uac_format_type_i_continuous_descriptor *fmt, |
8f898e92 | 553 | int stream) |
e5779998 DM |
554 | { |
555 | int err; | |
556 | ||
74754f97 | 557 | switch (fmt->bFormatType) { |
e5779998 DM |
558 | case UAC_FORMAT_TYPE_I: |
559 | case UAC_FORMAT_TYPE_III: | |
8f898e92 | 560 | err = parse_audio_format_i(chip, fp, format, fmt); |
e5779998 DM |
561 | break; |
562 | case UAC_FORMAT_TYPE_II: | |
8f898e92 | 563 | err = parse_audio_format_ii(chip, fp, format, fmt); |
e5779998 DM |
564 | break; |
565 | default: | |
0ba41d91 TI |
566 | usb_audio_info(chip, |
567 | "%u:%d : format type %d is not supported yet\n", | |
568 | fp->iface, fp->altsetting, | |
569 | fmt->bFormatType); | |
8d091242 | 570 | return -ENOTSUPP; |
e5779998 | 571 | } |
74754f97 | 572 | fp->fmt_type = fmt->bFormatType; |
e5779998 DM |
573 | if (err < 0) |
574 | return err; | |
575 | #if 1 | |
576 | /* FIXME: temporary hack for extigy/audigy 2 nx/zs */ | |
577 | /* extigy apparently supports sample rates other than 48k | |
578 | * but not in ordinary way. so we enable only 48k atm. | |
579 | */ | |
580 | if (chip->usb_id == USB_ID(0x041e, 0x3000) || | |
581 | chip->usb_id == USB_ID(0x041e, 0x3020) || | |
582 | chip->usb_id == USB_ID(0x041e, 0x3061)) { | |
74754f97 | 583 | if (fmt->bFormatType == UAC_FORMAT_TYPE_I && |
e5779998 DM |
584 | fp->rates != SNDRV_PCM_RATE_48000 && |
585 | fp->rates != SNDRV_PCM_RATE_96000) | |
8d091242 | 586 | return -ENOTSUPP; |
e5779998 DM |
587 | } |
588 | #endif | |
589 | return 0; | |
590 | } | |
591 | ||
9a2fe9b8 RB |
592 | int snd_usb_parse_audio_format_v3(struct snd_usb_audio *chip, |
593 | struct audioformat *fp, | |
594 | struct uac3_as_header_descriptor *as, | |
595 | int stream) | |
596 | { | |
597 | u64 format = le64_to_cpu(as->bmFormats); | |
598 | int err; | |
599 | ||
600 | /* | |
601 | * Type I format bits are D0..D6 | |
602 | * This test works because type IV is not supported | |
603 | */ | |
604 | if (format & 0x7f) | |
605 | fp->fmt_type = UAC_FORMAT_TYPE_I; | |
606 | else | |
607 | fp->fmt_type = UAC_FORMAT_TYPE_III; | |
608 | ||
609 | err = parse_audio_format_i(chip, fp, format, as); | |
610 | if (err < 0) | |
611 | return err; | |
612 | ||
613 | return 0; | |
614 | } |