ALSA: usx2y: Constify struct snd_usb_audio_quirk entries
[muen/linux.git] / sound / usb / usx2y / us122l.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
4  */
5
6 #include <linux/slab.h>
7 #include <linux/usb.h>
8 #include <linux/usb/audio.h>
9 #include <linux/module.h>
10 #include <sound/core.h>
11 #include <sound/hwdep.h>
12 #include <sound/pcm.h>
13 #include <sound/initval.h>
14 #define MODNAME "US122L"
15 #include "usb_stream.c"
16 #include "../usbaudio.h"
17 #include "../midi.h"
18 #include "us122l.h"
19
20 MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>");
21 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5");
22 MODULE_LICENSE("GPL");
23
24 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-max */
25 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* Id for this card */
26                                                         /* Enable this card */
27 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
28
29 module_param_array(index, int, NULL, 0444);
30 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
31 module_param_array(id, charp, NULL, 0444);
32 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
33 module_param_array(enable, bool, NULL, 0444);
34 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
35
36 /* driver_info flags */
37 #define US122L_FLAG_US144       BIT(0)
38
39 static int snd_us122l_card_used[SNDRV_CARDS];
40
41 static int us122l_create_usbmidi(struct snd_card *card)
42 {
43         static const struct snd_usb_midi_endpoint_info quirk_data = {
44                 .out_ep = 4,
45                 .in_ep = 3,
46                 .out_cables =   0x001,
47                 .in_cables =    0x001
48         };
49         static const struct snd_usb_audio_quirk quirk = {
50                 .vendor_name =  "US122L",
51                 .product_name = NAME_ALLCAPS,
52                 .ifnum =        1,
53                 .type = QUIRK_MIDI_US122L,
54                 .data = &quirk_data
55         };
56         struct usb_device *dev = US122L(card)->dev;
57         struct usb_interface *iface = usb_ifnum_to_if(dev, 1);
58
59         return snd_usbmidi_create(card, iface,
60                                   &US122L(card)->midi_list, &quirk);
61 }
62
63 static int us144_create_usbmidi(struct snd_card *card)
64 {
65         static const struct snd_usb_midi_endpoint_info quirk_data = {
66                 .out_ep = 4,
67                 .in_ep = 3,
68                 .out_cables =   0x001,
69                 .in_cables =    0x001
70         };
71         static const struct snd_usb_audio_quirk quirk = {
72                 .vendor_name =  "US144",
73                 .product_name = NAME_ALLCAPS,
74                 .ifnum =        0,
75                 .type = QUIRK_MIDI_US122L,
76                 .data = &quirk_data
77         };
78         struct usb_device *dev = US122L(card)->dev;
79         struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
80
81         return snd_usbmidi_create(card, iface,
82                                   &US122L(card)->midi_list, &quirk);
83 }
84
85 /*
86  * Wrapper for usb_control_msg().
87  * Allocates a temp buffer to prevent dmaing from/to the stack.
88  */
89 static int us122l_ctl_msg(struct usb_device *dev, unsigned int pipe,
90                           __u8 request, __u8 requesttype,
91                           __u16 value, __u16 index, void *data,
92                           __u16 size, int timeout)
93 {
94         int err;
95         void *buf = NULL;
96
97         if (size > 0) {
98                 buf = kmemdup(data, size, GFP_KERNEL);
99                 if (!buf)
100                         return -ENOMEM;
101         }
102         err = usb_control_msg(dev, pipe, request, requesttype,
103                               value, index, buf, size, timeout);
104         if (size > 0) {
105                 memcpy(data, buf, size);
106                 kfree(buf);
107         }
108         return err;
109 }
110
111 static void pt_info_set(struct usb_device *dev, u8 v)
112 {
113         int ret;
114
115         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
116                               'I',
117                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
118                               v, 0, NULL, 0, 1000);
119         snd_printdd(KERN_DEBUG "%i\n", ret);
120 }
121
122 static void usb_stream_hwdep_vm_open(struct vm_area_struct *area)
123 {
124         struct us122l *us122l = area->vm_private_data;
125         atomic_inc(&us122l->mmap_count);
126         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
127 }
128
129 static vm_fault_t usb_stream_hwdep_vm_fault(struct vm_fault *vmf)
130 {
131         unsigned long offset;
132         struct page *page;
133         void *vaddr;
134         struct us122l *us122l = vmf->vma->vm_private_data;
135         struct usb_stream *s;
136
137         mutex_lock(&us122l->mutex);
138         s = us122l->sk.s;
139         if (!s)
140                 goto unlock;
141
142         offset = vmf->pgoff << PAGE_SHIFT;
143         if (offset < PAGE_ALIGN(s->read_size))
144                 vaddr = (char *)s + offset;
145         else {
146                 offset -= PAGE_ALIGN(s->read_size);
147                 if (offset >= PAGE_ALIGN(s->write_size))
148                         goto unlock;
149
150                 vaddr = us122l->sk.write_page + offset;
151         }
152         page = virt_to_page(vaddr);
153
154         get_page(page);
155         mutex_unlock(&us122l->mutex);
156
157         vmf->page = page;
158
159         return 0;
160 unlock:
161         mutex_unlock(&us122l->mutex);
162         return VM_FAULT_SIGBUS;
163 }
164
165 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)
166 {
167         struct us122l *us122l = area->vm_private_data;
168         atomic_dec(&us122l->mmap_count);
169         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
170 }
171
172 static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
173         .open = usb_stream_hwdep_vm_open,
174         .fault = usb_stream_hwdep_vm_fault,
175         .close = usb_stream_hwdep_vm_close,
176 };
177
178
179 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file)
180 {
181         struct us122l   *us122l = hw->private_data;
182         struct usb_interface *iface;
183         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
184         if (hw->used >= 2)
185                 return -EBUSY;
186
187         if (!us122l->first)
188                 us122l->first = file;
189
190         if (us122l->is_us144) {
191                 iface = usb_ifnum_to_if(us122l->dev, 0);
192                 usb_autopm_get_interface(iface);
193         }
194         iface = usb_ifnum_to_if(us122l->dev, 1);
195         usb_autopm_get_interface(iface);
196         return 0;
197 }
198
199 static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file)
200 {
201         struct us122l   *us122l = hw->private_data;
202         struct usb_interface *iface;
203         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
204
205         if (us122l->is_us144) {
206                 iface = usb_ifnum_to_if(us122l->dev, 0);
207                 usb_autopm_put_interface(iface);
208         }
209         iface = usb_ifnum_to_if(us122l->dev, 1);
210         usb_autopm_put_interface(iface);
211         if (us122l->first == file)
212                 us122l->first = NULL;
213         mutex_lock(&us122l->mutex);
214         if (us122l->master == file)
215                 us122l->master = us122l->slave;
216
217         us122l->slave = NULL;
218         mutex_unlock(&us122l->mutex);
219         return 0;
220 }
221
222 static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
223                                  struct file *filp, struct vm_area_struct *area)
224 {
225         unsigned long   size = area->vm_end - area->vm_start;
226         struct us122l   *us122l = hw->private_data;
227         unsigned long offset;
228         struct usb_stream *s;
229         int err = 0;
230         bool read;
231
232         offset = area->vm_pgoff << PAGE_SHIFT;
233         mutex_lock(&us122l->mutex);
234         s = us122l->sk.s;
235         read = offset < s->read_size;
236         if (read && area->vm_flags & VM_WRITE) {
237                 err = -EPERM;
238                 goto out;
239         }
240         snd_printdd(KERN_DEBUG "%lu %u\n", size,
241                     read ? s->read_size : s->write_size);
242         /* if userspace tries to mmap beyond end of our buffer, fail */
243         if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) {
244                 snd_printk(KERN_WARNING "%lu > %u\n", size,
245                            read ? s->read_size : s->write_size);
246                 err = -EINVAL;
247                 goto out;
248         }
249
250         area->vm_ops = &usb_stream_hwdep_vm_ops;
251         area->vm_flags |= VM_DONTDUMP;
252         if (!read)
253                 area->vm_flags |= VM_DONTEXPAND;
254         area->vm_private_data = us122l;
255         atomic_inc(&us122l->mmap_count);
256 out:
257         mutex_unlock(&us122l->mutex);
258         return err;
259 }
260
261 static __poll_t usb_stream_hwdep_poll(struct snd_hwdep *hw,
262                                           struct file *file, poll_table *wait)
263 {
264         struct us122l   *us122l = hw->private_data;
265         unsigned        *polled;
266         __poll_t        mask;
267
268         poll_wait(file, &us122l->sk.sleep, wait);
269
270         mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM | EPOLLERR;
271         if (mutex_trylock(&us122l->mutex)) {
272                 struct usb_stream *s = us122l->sk.s;
273                 if (s && s->state == usb_stream_ready) {
274                         if (us122l->first == file)
275                                 polled = &s->periods_polled;
276                         else
277                                 polled = &us122l->second_periods_polled;
278                         if (*polled != s->periods_done) {
279                                 *polled = s->periods_done;
280                                 mask = EPOLLIN | EPOLLOUT | EPOLLWRNORM;
281                         } else
282                                 mask = 0;
283                 }
284                 mutex_unlock(&us122l->mutex);
285         }
286         return mask;
287 }
288
289 static void us122l_stop(struct us122l *us122l)
290 {
291         struct list_head *p;
292         list_for_each(p, &us122l->midi_list)
293                 snd_usbmidi_input_stop(p);
294
295         usb_stream_stop(&us122l->sk);
296         usb_stream_free(&us122l->sk);
297 }
298
299 static int us122l_set_sample_rate(struct usb_device *dev, int rate)
300 {
301         unsigned int ep = 0x81;
302         unsigned char data[3];
303         int err;
304
305         data[0] = rate;
306         data[1] = rate >> 8;
307         data[2] = rate >> 16;
308         err = us122l_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
309                              USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
310                              UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000);
311         if (err < 0)
312                 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n",
313                            dev->devnum, rate, ep);
314         return err;
315 }
316
317 static bool us122l_start(struct us122l *us122l,
318                          unsigned rate, unsigned period_frames)
319 {
320         struct list_head *p;
321         int err;
322         unsigned use_packsize = 0;
323         bool success = false;
324
325         if (us122l->dev->speed == USB_SPEED_HIGH) {
326                 /* The us-122l's descriptor defaults to iso max_packsize 78,
327                    which isn't needed for samplerates <= 48000.
328                    Lets save some memory:
329                 */
330                 switch (rate) {
331                 case 44100:
332                         use_packsize = 36;
333                         break;
334                 case 48000:
335                         use_packsize = 42;
336                         break;
337                 case 88200:
338                         use_packsize = 72;
339                         break;
340                 }
341         }
342         if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2,
343                             rate, use_packsize, period_frames, 6))
344                 goto out;
345
346         err = us122l_set_sample_rate(us122l->dev, rate);
347         if (err < 0) {
348                 us122l_stop(us122l);
349                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
350                 goto out;
351         }
352         err = usb_stream_start(&us122l->sk);
353         if (err < 0) {
354                 us122l_stop(us122l);
355                 snd_printk(KERN_ERR "us122l_start error %i \n", err);
356                 goto out;
357         }
358         list_for_each(p, &us122l->midi_list)
359                 snd_usbmidi_input_start(p);
360         success = true;
361 out:
362         return success;
363 }
364
365 static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
366                                   unsigned cmd, unsigned long arg)
367 {
368         struct usb_stream_config cfg;
369         struct us122l *us122l = hw->private_data;
370         struct usb_stream *s;
371         unsigned min_period_frames;
372         int err = 0;
373         bool high_speed;
374
375         if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS)
376                 return -ENOTTY;
377
378         if (copy_from_user(&cfg, (void __user *)arg, sizeof(cfg)))
379                 return -EFAULT;
380
381         if (cfg.version != USB_STREAM_INTERFACE_VERSION)
382                 return -ENXIO;
383
384         high_speed = us122l->dev->speed == USB_SPEED_HIGH;
385         if ((cfg.sample_rate != 44100 && cfg.sample_rate != 48000  &&
386              (!high_speed ||
387               (cfg.sample_rate != 88200 && cfg.sample_rate != 96000))) ||
388             cfg.frame_size != 6 ||
389             cfg.period_frames > 0x3000)
390                 return -EINVAL;
391
392         switch (cfg.sample_rate) {
393         case 44100:
394                 min_period_frames = 48;
395                 break;
396         case 48000:
397                 min_period_frames = 52;
398                 break;
399         default:
400                 min_period_frames = 104;
401                 break;
402         }
403         if (!high_speed)
404                 min_period_frames <<= 1;
405         if (cfg.period_frames < min_period_frames)
406                 return -EINVAL;
407
408         snd_power_wait(hw->card, SNDRV_CTL_POWER_D0);
409
410         mutex_lock(&us122l->mutex);
411         s = us122l->sk.s;
412         if (!us122l->master)
413                 us122l->master = file;
414         else if (us122l->master != file) {
415                 if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg))) {
416                         err = -EIO;
417                         goto unlock;
418                 }
419                 us122l->slave = file;
420         }
421         if (!s || memcmp(&cfg, &s->cfg, sizeof(cfg)) ||
422             s->state == usb_stream_xrun) {
423                 us122l_stop(us122l);
424                 if (!us122l_start(us122l, cfg.sample_rate, cfg.period_frames))
425                         err = -EIO;
426                 else
427                         err = 1;
428         }
429 unlock:
430         mutex_unlock(&us122l->mutex);
431         wake_up_all(&us122l->sk.sleep);
432         return err;
433 }
434
435 #define SND_USB_STREAM_ID "USB STREAM"
436 static int usb_stream_hwdep_new(struct snd_card *card)
437 {
438         int err;
439         struct snd_hwdep *hw;
440         struct usb_device *dev = US122L(card)->dev;
441
442         err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
443         if (err < 0)
444                 return err;
445
446         hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
447         hw->private_data = US122L(card);
448         hw->ops.open = usb_stream_hwdep_open;
449         hw->ops.release = usb_stream_hwdep_release;
450         hw->ops.ioctl = usb_stream_hwdep_ioctl;
451         hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
452         hw->ops.mmap = usb_stream_hwdep_mmap;
453         hw->ops.poll = usb_stream_hwdep_poll;
454
455         sprintf(hw->name, "/dev/bus/usb/%03d/%03d/hwdeppcm",
456                 dev->bus->busnum, dev->devnum);
457         return 0;
458 }
459
460
461 static bool us122l_create_card(struct snd_card *card)
462 {
463         int err;
464         struct us122l *us122l = US122L(card);
465
466         if (us122l->is_us144) {
467                 err = usb_set_interface(us122l->dev, 0, 1);
468                 if (err) {
469                         snd_printk(KERN_ERR "usb_set_interface error \n");
470                         return false;
471                 }
472         }
473         err = usb_set_interface(us122l->dev, 1, 1);
474         if (err) {
475                 snd_printk(KERN_ERR "usb_set_interface error \n");
476                 return false;
477         }
478
479         pt_info_set(us122l->dev, 0x11);
480         pt_info_set(us122l->dev, 0x10);
481
482         if (!us122l_start(us122l, 44100, 256))
483                 return false;
484
485         if (us122l->is_us144)
486                 err = us144_create_usbmidi(card);
487         else
488                 err = us122l_create_usbmidi(card);
489         if (err < 0) {
490                 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
491                 goto stop;
492         }
493         err = usb_stream_hwdep_new(card);
494         if (err < 0) {
495 /* release the midi resources */
496                 struct list_head *p;
497                 list_for_each(p, &us122l->midi_list)
498                         snd_usbmidi_disconnect(p);
499
500                 goto stop;
501         }
502         return true;
503
504 stop:
505         us122l_stop(us122l);
506         return false;
507 }
508
509 static void snd_us122l_free(struct snd_card *card)
510 {
511         struct us122l   *us122l = US122L(card);
512         int             index = us122l->card_index;
513         if (index >= 0  &&  index < SNDRV_CARDS)
514                 snd_us122l_card_used[index] = 0;
515 }
516
517 static int usx2y_create_card(struct usb_device *device,
518                              struct usb_interface *intf,
519                              struct snd_card **cardp,
520                              unsigned long flags)
521 {
522         int             dev;
523         struct snd_card *card;
524         int err;
525
526         for (dev = 0; dev < SNDRV_CARDS; ++dev)
527                 if (enable[dev] && !snd_us122l_card_used[dev])
528                         break;
529         if (dev >= SNDRV_CARDS)
530                 return -ENODEV;
531         err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
532                            sizeof(struct us122l), &card);
533         if (err < 0)
534                 return err;
535         snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
536         card->private_free = snd_us122l_free;
537         US122L(card)->dev = device;
538         mutex_init(&US122L(card)->mutex);
539         init_waitqueue_head(&US122L(card)->sk.sleep);
540         US122L(card)->is_us144 = flags & US122L_FLAG_US144;
541         INIT_LIST_HEAD(&US122L(card)->midi_list);
542         strcpy(card->driver, "USB "NAME_ALLCAPS"");
543         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
544         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
545                 card->shortname,
546                 le16_to_cpu(device->descriptor.idVendor),
547                 le16_to_cpu(device->descriptor.idProduct),
548                 0,
549                 US122L(card)->dev->bus->busnum,
550                 US122L(card)->dev->devnum
551                 );
552         *cardp = card;
553         return 0;
554 }
555
556 static int us122l_usb_probe(struct usb_interface *intf,
557                             const struct usb_device_id *device_id,
558                             struct snd_card **cardp)
559 {
560         struct usb_device *device = interface_to_usbdev(intf);
561         struct snd_card *card;
562         int err;
563
564         err = usx2y_create_card(device, intf, &card, device_id->driver_info);
565         if (err < 0)
566                 return err;
567
568         if (!us122l_create_card(card)) {
569                 snd_card_free(card);
570                 return -EINVAL;
571         }
572
573         err = snd_card_register(card);
574         if (err < 0) {
575                 snd_card_free(card);
576                 return err;
577         }
578
579         usb_get_intf(usb_ifnum_to_if(device, 0));
580         usb_get_dev(device);
581         *cardp = card;
582         return 0;
583 }
584
585 static int snd_us122l_probe(struct usb_interface *intf,
586                             const struct usb_device_id *id)
587 {
588         struct usb_device *device = interface_to_usbdev(intf);
589         struct snd_card *card;
590         int err;
591
592         if (id->driver_info & US122L_FLAG_US144 &&
593                         device->speed == USB_SPEED_HIGH) {
594                 snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n");
595                 return -ENODEV;
596         }
597
598         snd_printdd(KERN_DEBUG"%p:%i\n",
599                     intf, intf->cur_altsetting->desc.bInterfaceNumber);
600         if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
601                 return 0;
602
603         err = us122l_usb_probe(usb_get_intf(intf), id, &card);
604         if (err < 0) {
605                 usb_put_intf(intf);
606                 return err;
607         }
608
609         usb_set_intfdata(intf, card);
610         return 0;
611 }
612
613 static void snd_us122l_disconnect(struct usb_interface *intf)
614 {
615         struct snd_card *card;
616         struct us122l *us122l;
617         struct list_head *p;
618
619         card = usb_get_intfdata(intf);
620         if (!card)
621                 return;
622
623         snd_card_disconnect(card);
624
625         us122l = US122L(card);
626         mutex_lock(&us122l->mutex);
627         us122l_stop(us122l);
628         mutex_unlock(&us122l->mutex);
629
630 /* release the midi resources */
631         list_for_each(p, &us122l->midi_list) {
632                 snd_usbmidi_disconnect(p);
633         }
634
635         usb_put_intf(usb_ifnum_to_if(us122l->dev, 0));
636         usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
637         usb_put_dev(us122l->dev);
638
639         while (atomic_read(&us122l->mmap_count))
640                 msleep(500);
641
642         snd_card_free(card);
643 }
644
645 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)
646 {
647         struct snd_card *card;
648         struct us122l *us122l;
649         struct list_head *p;
650
651         card = usb_get_intfdata(intf);
652         if (!card)
653                 return 0;
654         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
655
656         us122l = US122L(card);
657         if (!us122l)
658                 return 0;
659
660         list_for_each(p, &us122l->midi_list)
661                 snd_usbmidi_input_stop(p);
662
663         mutex_lock(&us122l->mutex);
664         usb_stream_stop(&us122l->sk);
665         mutex_unlock(&us122l->mutex);
666
667         return 0;
668 }
669
670 static int snd_us122l_resume(struct usb_interface *intf)
671 {
672         struct snd_card *card;
673         struct us122l *us122l;
674         struct list_head *p;
675         int err;
676
677         card = usb_get_intfdata(intf);
678         if (!card)
679                 return 0;
680
681         us122l = US122L(card);
682         if (!us122l)
683                 return 0;
684
685         mutex_lock(&us122l->mutex);
686         /* needed, doesn't restart without: */
687         if (us122l->is_us144) {
688                 err = usb_set_interface(us122l->dev, 0, 1);
689                 if (err) {
690                         snd_printk(KERN_ERR "usb_set_interface error \n");
691                         goto unlock;
692                 }
693         }
694         err = usb_set_interface(us122l->dev, 1, 1);
695         if (err) {
696                 snd_printk(KERN_ERR "usb_set_interface error \n");
697                 goto unlock;
698         }
699
700         pt_info_set(us122l->dev, 0x11);
701         pt_info_set(us122l->dev, 0x10);
702
703         err = us122l_set_sample_rate(us122l->dev,
704                                      us122l->sk.s->cfg.sample_rate);
705         if (err < 0) {
706                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
707                 goto unlock;
708         }
709         err = usb_stream_start(&us122l->sk);
710         if (err)
711                 goto unlock;
712
713         list_for_each(p, &us122l->midi_list)
714                 snd_usbmidi_input_start(p);
715 unlock:
716         mutex_unlock(&us122l->mutex);
717         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
718         return err;
719 }
720
721 static const struct usb_device_id snd_us122l_usb_id_table[] = {
722         {
723                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
724                 .idVendor =     0x0644,
725                 .idProduct =    USB_ID_US122L
726         },
727         {       /* US-144 only works at USB1.1! Disable module ehci-hcd. */
728                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
729                 .idVendor =     0x0644,
730                 .idProduct =    USB_ID_US144,
731                 .driver_info =  US122L_FLAG_US144
732         },
733         {
734                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
735                 .idVendor =     0x0644,
736                 .idProduct =    USB_ID_US122MKII
737         },
738         {
739                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
740                 .idVendor =     0x0644,
741                 .idProduct =    USB_ID_US144MKII,
742                 .driver_info =  US122L_FLAG_US144
743         },
744         { /* terminator */ }
745 };
746
747 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
748 static struct usb_driver snd_us122l_usb_driver = {
749         .name =         "snd-usb-us122l",
750         .probe =        snd_us122l_probe,
751         .disconnect =   snd_us122l_disconnect,
752         .suspend =      snd_us122l_suspend,
753         .resume =       snd_us122l_resume,
754         .reset_resume = snd_us122l_resume,
755         .id_table =     snd_us122l_usb_id_table,
756         .supports_autosuspend = 1
757 };
758
759 module_usb_driver(snd_us122l_usb_driver);