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.
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.
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
17 #include <linux/init.h>
18 #include <linux/slab.h>
19 #include <linux/usb.h>
20 #include <linux/usb/audio.h>
22 #include <sound/control.h>
23 #include <sound/core.h>
24 #include <sound/info.h>
25 #include <sound/pcm.h>
30 #include "mixer_quirks.h"
40 * handle the quirks for the contained interfaces
42 static int create_composite_quirk(struct snd_usb_audio *chip,
43 struct usb_interface *iface,
44 struct usb_driver *driver,
45 const struct snd_usb_audio_quirk *quirk)
47 int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
50 for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
51 iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
54 if (quirk->ifnum != probed_ifnum &&
55 usb_interface_claimed(iface))
57 err = snd_usb_create_quirk(chip, iface, driver, quirk);
60 if (quirk->ifnum != probed_ifnum)
61 usb_driver_claim_interface(driver, iface, (void *)-1L);
66 static int ignore_interface_quirk(struct snd_usb_audio *chip,
67 struct usb_interface *iface,
68 struct usb_driver *driver,
69 const struct snd_usb_audio_quirk *quirk)
76 * Allow alignment on audio sub-slot (channel samples) rather than
77 * on audio slots (audio frames)
79 static int create_align_transfer_quirk(struct snd_usb_audio *chip,
80 struct usb_interface *iface,
81 struct usb_driver *driver,
82 const struct snd_usb_audio_quirk *quirk)
85 return 1; /* Continue with creating streams and mixer */
88 static int create_any_midi_quirk(struct snd_usb_audio *chip,
89 struct usb_interface *intf,
90 struct usb_driver *driver,
91 const struct snd_usb_audio_quirk *quirk)
93 return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk);
97 * create a stream for an interface with proper descriptors
99 static int create_standard_audio_quirk(struct snd_usb_audio *chip,
100 struct usb_interface *iface,
101 struct usb_driver *driver,
102 const struct snd_usb_audio_quirk *quirk)
104 struct usb_host_interface *alts;
105 struct usb_interface_descriptor *altsd;
108 alts = &iface->altsetting[0];
109 altsd = get_iface_desc(alts);
110 err = snd_usb_parse_audio_interface(chip, altsd->bInterfaceNumber);
112 snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
113 altsd->bInterfaceNumber, err);
116 /* reset the current interface */
117 usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
122 * create a stream for an endpoint/altsetting without proper descriptors
124 static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
125 struct usb_interface *iface,
126 struct usb_driver *driver,
127 const struct snd_usb_audio_quirk *quirk)
129 struct audioformat *fp;
130 struct usb_host_interface *alts;
132 unsigned *rate_table = NULL;
134 fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
136 snd_printk(KERN_ERR "cannot memdup\n");
139 INIT_LIST_HEAD(&fp->list);
140 if (fp->nr_rates > MAX_NR_RATES) {
144 if (fp->nr_rates > 0) {
145 rate_table = kmemdup(fp->rate_table,
146 sizeof(int) * fp->nr_rates, GFP_KERNEL);
151 fp->rate_table = rate_table;
154 stream = (fp->endpoint & USB_DIR_IN)
155 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
156 err = snd_usb_add_audio_stream(chip, stream, fp);
159 if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
160 fp->altset_idx >= iface->num_altsetting) {
164 alts = &iface->altsetting[fp->altset_idx];
165 if (get_iface_desc(alts)->bNumEndpoints < 1) {
170 fp->datainterval = snd_usb_parse_datainterval(chip, alts);
171 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
172 usb_set_interface(chip->dev, fp->iface, 0);
173 snd_usb_init_pitch(chip, fp->iface, alts, fp);
174 snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);
178 list_del(&fp->list); /* unlink for avoiding double-free */
185 * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
186 * The only way to detect the sample rate is by looking at wMaxPacketSize.
188 static int create_uaxx_quirk(struct snd_usb_audio *chip,
189 struct usb_interface *iface,
190 struct usb_driver *driver,
191 const struct snd_usb_audio_quirk *quirk)
193 static const struct audioformat ua_format = {
194 .formats = SNDRV_PCM_FMTBIT_S24_3LE,
196 .fmt_type = UAC_FORMAT_TYPE_I,
199 .rates = SNDRV_PCM_RATE_CONTINUOUS,
201 struct usb_host_interface *alts;
202 struct usb_interface_descriptor *altsd;
203 struct audioformat *fp;
206 /* both PCM and MIDI interfaces have 2 or more altsettings */
207 if (iface->num_altsetting < 2)
209 alts = &iface->altsetting[1];
210 altsd = get_iface_desc(alts);
212 if (altsd->bNumEndpoints == 2) {
213 static const struct snd_usb_midi_endpoint_info ua700_ep = {
214 .out_cables = 0x0003,
217 static const struct snd_usb_audio_quirk ua700_quirk = {
218 .type = QUIRK_MIDI_FIXED_ENDPOINT,
221 static const struct snd_usb_midi_endpoint_info uaxx_ep = {
222 .out_cables = 0x0001,
225 static const struct snd_usb_audio_quirk uaxx_quirk = {
226 .type = QUIRK_MIDI_FIXED_ENDPOINT,
229 const struct snd_usb_audio_quirk *quirk =
230 chip->usb_id == USB_ID(0x0582, 0x002b)
231 ? &ua700_quirk : &uaxx_quirk;
232 return snd_usbmidi_create(chip->card, iface,
233 &chip->midi_list, quirk);
236 if (altsd->bNumEndpoints != 1)
239 fp = kmemdup(&ua_format, sizeof(*fp), GFP_KERNEL);
243 fp->iface = altsd->bInterfaceNumber;
244 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
245 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
246 fp->datainterval = 0;
247 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
248 INIT_LIST_HEAD(&fp->list);
250 switch (fp->maxpacksize) {
252 fp->rate_max = fp->rate_min = 44100;
256 fp->rate_max = fp->rate_min = 48000;
260 fp->rate_max = fp->rate_min = 96000;
263 snd_printk(KERN_ERR "unknown sample rate\n");
268 stream = (fp->endpoint & USB_DIR_IN)
269 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
270 err = snd_usb_add_audio_stream(chip, stream, fp);
272 list_del(&fp->list); /* unlink for avoiding double-free */
276 usb_set_interface(chip->dev, fp->iface, 0);
281 * Create a standard mixer for the specified interface.
283 static int create_standard_mixer_quirk(struct snd_usb_audio *chip,
284 struct usb_interface *iface,
285 struct usb_driver *driver,
286 const struct snd_usb_audio_quirk *quirk)
288 if (quirk->ifnum < 0)
291 return snd_usb_create_mixer(chip, quirk->ifnum, 0);
295 * audio-interface quirks
297 * returns zero if no standard audio/MIDI parsing is needed.
298 * returns a positive value if standard audio/midi interfaces are parsed
300 * returns a negative value at error.
302 int snd_usb_create_quirk(struct snd_usb_audio *chip,
303 struct usb_interface *iface,
304 struct usb_driver *driver,
305 const struct snd_usb_audio_quirk *quirk)
307 typedef int (*quirk_func_t)(struct snd_usb_audio *,
308 struct usb_interface *,
310 const struct snd_usb_audio_quirk *);
311 static const quirk_func_t quirk_funcs[] = {
312 [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
313 [QUIRK_COMPOSITE] = create_composite_quirk,
314 [QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
315 [QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
316 [QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
317 [QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
318 [QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
319 [QUIRK_MIDI_RAW_BYTES] = create_any_midi_quirk,
320 [QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
321 [QUIRK_MIDI_CME] = create_any_midi_quirk,
322 [QUIRK_MIDI_AKAI] = create_any_midi_quirk,
323 [QUIRK_MIDI_FTDI] = create_any_midi_quirk,
324 [QUIRK_MIDI_CH345] = create_any_midi_quirk,
325 [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
326 [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
327 [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
328 [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk,
329 [QUIRK_AUDIO_STANDARD_MIXER] = create_standard_mixer_quirk,
332 if (quirk->type < QUIRK_TYPE_COUNT) {
333 return quirk_funcs[quirk->type](chip, iface, driver, quirk);
335 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
344 #define EXTIGY_FIRMWARE_SIZE_OLD 794
345 #define EXTIGY_FIRMWARE_SIZE_NEW 483
347 static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
349 struct usb_host_config *config = dev->actconfig;
352 if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
353 le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
354 snd_printdd("sending Extigy boot sequence...\n");
355 /* Send message to force it to reconnect with full interface. */
356 err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
357 0x10, 0x43, 0x0001, 0x000a, NULL, 0);
358 if (err < 0) snd_printdd("error sending boot message: %d\n", err);
359 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
360 &dev->descriptor, sizeof(dev->descriptor));
361 config = dev->actconfig;
362 if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
363 err = usb_reset_configuration(dev);
364 if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
365 snd_printdd("extigy_boot: new boot length = %d\n",
366 le16_to_cpu(get_cfg_desc(config)->wTotalLength));
367 return -ENODEV; /* quit this anyway */
372 static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
376 snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
377 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
380 snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
381 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
388 static int snd_usb_fasttrackpro_boot_quirk(struct usb_device *dev)
392 if (dev->actconfig->desc.bConfigurationValue == 1) {
393 snd_printk(KERN_INFO "usb-audio: "
394 "Fast Track Pro switching to config #2\n");
395 /* This function has to be available by the usb core module.
396 * if it is not avialable the boot quirk has to be left out
397 * and the configuration has to be set by udev or hotplug
400 err = usb_driver_set_configuration(dev, 2);
402 snd_printdd("error usb_driver_set_configuration: %d\n",
404 /* Always return an error, so that we stop creating a device
405 that will just be destroyed and recreated with a new
409 snd_printk(KERN_INFO "usb-audio: Fast Track Pro config OK\n");
415 * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
416 * documented in the device's data sheet.
418 static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
422 buf[1] = value & 0xff;
423 buf[2] = (value >> 8) & 0xff;
425 return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
426 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
430 static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
433 * Enable line-out driver mode, set headphone source to front
434 * channels, enable stereo mic.
436 return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
440 * C-Media CM6206 is based on CM106 with two additional
441 * registers that are not documented in the data sheet.
442 * Values here are chosen based on sniffing USB traffic
445 static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
448 int val[] = {0x2004, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};
450 for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
451 err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
460 * This call will put the synth in "USB send" mode, i.e it will send MIDI
461 * messages through USB (this is disabled at startup). The synth will
462 * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
463 * sign on its LCD. Values here are chosen based on sniffing USB traffic
466 static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
468 int err, actual_length;
470 /* "midi send" enable */
471 static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
473 void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
476 err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
477 ARRAY_SIZE(seq), &actual_length, 1000);
486 * Some sound cards from Native Instruments are in fact compliant to the USB
487 * audio standard of version 2 and other approved USB standards, even though
488 * they come up as vendor-specific device when first connected.
490 * However, they can be told to come up with a new set of descriptors
491 * upon their next enumeration, and the interfaces announced by the new
492 * descriptors will then be handled by the kernel's class drivers. As the
493 * product ID will also change, no further checks are required.
496 static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
498 int ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
499 0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
500 1, 0, NULL, 0, 1000);
505 usb_reset_device(dev);
507 /* return -EAGAIN, so the creation of an audio interface for this
508 * temporary device is aborted. The device will reconnect with a
516 #define MAUDIO_SET 0x01 /* parse device_setup */
517 #define MAUDIO_SET_COMPATIBLE 0x80 /* use only "win-compatible" interfaces */
518 #define MAUDIO_SET_DTS 0x02 /* enable DTS Digital Output */
519 #define MAUDIO_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */
520 #define MAUDIO_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */
521 #define MAUDIO_SET_DI 0x10 /* enable Digital Input */
522 #define MAUDIO_SET_MASK 0x1f /* bit mask for setup value */
523 #define MAUDIO_SET_24B_48K_DI 0x19 /* 24bits+48KHz+Digital Input */
524 #define MAUDIO_SET_24B_48K_NOTDI 0x09 /* 24bits+48KHz+No Digital Input */
525 #define MAUDIO_SET_16B_48K_DI 0x11 /* 16bits+48KHz+Digital Input */
526 #define MAUDIO_SET_16B_48K_NOTDI 0x01 /* 16bits+48KHz+No Digital Input */
528 static int quattro_skip_setting_quirk(struct snd_usb_audio *chip,
529 int iface, int altno)
531 /* Reset ALL ifaces to 0 altsetting.
532 * Call it for every possible altsetting of every interface.
534 usb_set_interface(chip->dev, iface, 0);
535 if (chip->setup & MAUDIO_SET) {
536 if (chip->setup & MAUDIO_SET_COMPATIBLE) {
537 if (iface != 1 && iface != 2)
538 return 1; /* skip all interfaces but 1 and 2 */
541 if (iface == 1 || iface == 2)
542 return 1; /* skip interfaces 1 and 2 */
543 if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
544 return 1; /* skip this altsetting */
545 mask = chip->setup & MAUDIO_SET_MASK;
546 if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
547 return 1; /* skip this altsetting */
548 if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
549 return 1; /* skip this altsetting */
550 if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 4)
551 return 1; /* skip this altsetting */
554 snd_printdd(KERN_INFO
555 "using altsetting %d for interface %d config %d\n",
556 altno, iface, chip->setup);
557 return 0; /* keep this altsetting */
560 static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
564 /* Reset ALL ifaces to 0 altsetting.
565 * Call it for every possible altsetting of every interface.
567 usb_set_interface(chip->dev, iface, 0);
569 if (chip->setup & MAUDIO_SET) {
571 if ((chip->setup & MAUDIO_SET_DTS) && altno != 6)
572 return 1; /* skip this altsetting */
573 if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
574 return 1; /* skip this altsetting */
575 mask = chip->setup & MAUDIO_SET_MASK;
576 if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
577 return 1; /* skip this altsetting */
578 if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
579 return 1; /* skip this altsetting */
580 if (mask == MAUDIO_SET_16B_48K_DI && altno != 4)
581 return 1; /* skip this altsetting */
582 if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 5)
583 return 1; /* skip this altsetting */
586 return 0; /* keep this altsetting */
590 static int fasttrackpro_skip_setting_quirk(struct snd_usb_audio *chip,
591 int iface, int altno)
593 /* Reset ALL ifaces to 0 altsetting.
594 * Call it for every possible altsetting of every interface.
596 usb_set_interface(chip->dev, iface, 0);
598 /* possible configuration where both inputs and only one output is
599 *used is not supported by the current setup
601 if (chip->setup & (MAUDIO_SET | MAUDIO_SET_24B)) {
602 if (chip->setup & MAUDIO_SET_96K) {
603 if (altno != 3 && altno != 6)
605 } else if (chip->setup & MAUDIO_SET_DI) {
607 return 1; /* no analog input */
608 if (altno != 2 && altno != 5)
609 return 1; /* enable only altsets 2 and 5 */
612 return 1; /* disable digialt input */
613 if (altno != 2 && altno != 5)
614 return 1; /* enalbe only altsets 2 and 5 */
617 /* keep only 16-Bit mode */
622 snd_printdd(KERN_INFO
623 "using altsetting %d for interface %d config %d\n",
624 altno, iface, chip->setup);
625 return 0; /* keep this altsetting */
628 int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
632 /* audiophile usb: skip altsets incompatible with device_setup */
633 if (chip->usb_id == USB_ID(0x0763, 0x2003))
634 return audiophile_skip_setting_quirk(chip, iface, altno);
635 /* quattro usb: skip altsets incompatible with device_setup */
636 if (chip->usb_id == USB_ID(0x0763, 0x2001))
637 return quattro_skip_setting_quirk(chip, iface, altno);
638 /* fasttrackpro usb: skip altsets incompatible with device_setup */
639 if (chip->usb_id == USB_ID(0x0763, 0x2012))
640 return fasttrackpro_skip_setting_quirk(chip, iface, altno);
645 int snd_usb_apply_boot_quirk(struct usb_device *dev,
646 struct usb_interface *intf,
647 const struct snd_usb_audio_quirk *quirk)
649 u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
650 le16_to_cpu(dev->descriptor.idProduct));
653 case USB_ID(0x041e, 0x3000):
654 /* SB Extigy needs special boot-up sequence */
655 /* if more models come, this will go to the quirk list. */
656 return snd_usb_extigy_boot_quirk(dev, intf);
658 case USB_ID(0x041e, 0x3020):
659 /* SB Audigy 2 NX needs its own boot-up magic, too */
660 return snd_usb_audigy2nx_boot_quirk(dev);
662 case USB_ID(0x10f5, 0x0200):
663 /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
664 return snd_usb_cm106_boot_quirk(dev);
666 case USB_ID(0x0d8c, 0x0102):
667 /* C-Media CM6206 / CM106-Like Sound Device */
668 case USB_ID(0x0ccd, 0x00b1): /* Terratec Aureon 7.1 USB */
669 return snd_usb_cm6206_boot_quirk(dev);
671 case USB_ID(0x133e, 0x0815):
672 /* Access Music VirusTI Desktop */
673 return snd_usb_accessmusic_boot_quirk(dev);
675 case USB_ID(0x17cc, 0x1000): /* Komplete Audio 6 */
676 case USB_ID(0x17cc, 0x1010): /* Traktor Audio 6 */
677 case USB_ID(0x17cc, 0x1020): /* Traktor Audio 10 */
678 return snd_usb_nativeinstruments_boot_quirk(dev);
679 case USB_ID(0x0763, 0x2012): /* M-Audio Fast Track Pro USB */
680 return snd_usb_fasttrackpro_boot_quirk(dev);
687 * check if the device uses big-endian samples
689 int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
691 /* it depends on altsetting wether the device is big-endian or not */
692 switch (chip->usb_id) {
693 case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
694 if (fp->altsetting == 2 || fp->altsetting == 3 ||
695 fp->altsetting == 5 || fp->altsetting == 6)
698 case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
699 if (chip->setup == 0x00 ||
700 fp->altsetting == 1 || fp->altsetting == 2 ||
704 case USB_ID(0x0763, 0x2012): /* M-Audio Fast Track Pro */
705 if (fp->altsetting == 2 || fp->altsetting == 3 ||
706 fp->altsetting == 5 || fp->altsetting == 6)
714 * For E-Mu 0404USB/0202USB/TrackerPre/0204 sample rate should be set for device,
719 EMU_QUIRK_SR_44100HZ = 0,
720 EMU_QUIRK_SR_48000HZ,
721 EMU_QUIRK_SR_88200HZ,
722 EMU_QUIRK_SR_96000HZ,
723 EMU_QUIRK_SR_176400HZ,
724 EMU_QUIRK_SR_192000HZ
727 static void set_format_emu_quirk(struct snd_usb_substream *subs,
728 struct audioformat *fmt)
730 unsigned char emu_samplerate_id = 0;
732 /* When capture is active
733 * sample rate shouldn't be changed
734 * by playback substream
736 if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
737 if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
741 switch (fmt->rate_min) {
743 emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
746 emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
749 emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
752 emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
755 emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
758 emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
761 snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
762 subs->pkt_offset_adj = (emu_samplerate_id >= EMU_QUIRK_SR_176400HZ) ? 4 : 0;
765 void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
766 struct audioformat *fmt)
768 switch (subs->stream->chip->usb_id) {
769 case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
770 case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
771 case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
772 case USB_ID(0x041e, 0x3f19): /* E-Mu 0204 USB */
773 set_format_emu_quirk(subs, fmt);