Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.git] / sound / usb / usx2y / us122l.c
1 /*
2  * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
3  *
4  * This program is free software; you can redistribute it and/or modify it
5  * under the terms of the GNU General Public License as published by the
6  * Free Software Foundation; either version 2 of the License, or (at your
7  * option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17  */
18
19 #include <linux/usb.h>
20 #include <linux/usb/audio.h>
21 #include <sound/core.h>
22 #include <sound/hwdep.h>
23 #include <sound/pcm.h>
24 #include <sound/initval.h>
25 #define MODNAME "US122L"
26 #include "usb_stream.c"
27 #include "../usbaudio.h"
28 #include "us122l.h"
29
30 MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>");
31 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.5");
32 MODULE_LICENSE("GPL");
33
34 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-max */
35 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* Id for this card */
36                                                         /* Enable this card */
37 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
38
39 module_param_array(index, int, NULL, 0444);
40 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
41 module_param_array(id, charp, NULL, 0444);
42 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
43 module_param_array(enable, bool, NULL, 0444);
44 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
45
46 static int snd_us122l_card_used[SNDRV_CARDS];
47
48
49 static int us122l_create_usbmidi(struct snd_card *card)
50 {
51         static struct snd_usb_midi_endpoint_info quirk_data = {
52                 .out_ep = 4,
53                 .in_ep = 3,
54                 .out_cables =   0x001,
55                 .in_cables =    0x001
56         };
57         static struct snd_usb_audio_quirk quirk = {
58                 .vendor_name =  "US122L",
59                 .product_name = NAME_ALLCAPS,
60                 .ifnum =        1,
61                 .type = QUIRK_MIDI_US122L,
62                 .data = &quirk_data
63         };
64         struct usb_device *dev = US122L(card)->dev;
65         struct usb_interface *iface = usb_ifnum_to_if(dev, 1);
66
67         return snd_usbmidi_create(card, iface,
68                                   &US122L(card)->midi_list, &quirk);
69 }
70
71 static int us144_create_usbmidi(struct snd_card *card)
72 {
73         static struct snd_usb_midi_endpoint_info quirk_data = {
74                 .out_ep = 4,
75                 .in_ep = 3,
76                 .out_cables =   0x001,
77                 .in_cables =    0x001
78         };
79         static struct snd_usb_audio_quirk quirk = {
80                 .vendor_name =  "US144",
81                 .product_name = NAME_ALLCAPS,
82                 .ifnum =        0,
83                 .type = QUIRK_MIDI_US122L,
84                 .data = &quirk_data
85         };
86         struct usb_device *dev = US122L(card)->dev;
87         struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
88
89         return snd_usbmidi_create(card, iface,
90                                   &US122L(card)->midi_list, &quirk);
91 }
92
93 /*
94  * Wrapper for usb_control_msg().
95  * Allocates a temp buffer to prevent dmaing from/to the stack.
96  */
97 static int us122l_ctl_msg(struct usb_device *dev, unsigned int pipe,
98                           __u8 request, __u8 requesttype,
99                           __u16 value, __u16 index, void *data,
100                           __u16 size, int timeout)
101 {
102         int err;
103         void *buf = NULL;
104
105         if (size > 0) {
106                 buf = kmemdup(data, size, GFP_KERNEL);
107                 if (!buf)
108                         return -ENOMEM;
109         }
110         err = usb_control_msg(dev, pipe, request, requesttype,
111                               value, index, buf, size, timeout);
112         if (size > 0) {
113                 memcpy(data, buf, size);
114                 kfree(buf);
115         }
116         return err;
117 }
118
119 static void pt_info_set(struct usb_device *dev, u8 v)
120 {
121         int ret;
122
123         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
124                               'I',
125                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
126                               v, 0, NULL, 0, 1000);
127         snd_printdd(KERN_DEBUG "%i\n", ret);
128 }
129
130 static void usb_stream_hwdep_vm_open(struct vm_area_struct *area)
131 {
132         struct us122l *us122l = area->vm_private_data;
133         atomic_inc(&us122l->mmap_count);
134         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
135 }
136
137 static int usb_stream_hwdep_vm_fault(struct vm_area_struct *area,
138                                      struct vm_fault *vmf)
139 {
140         unsigned long offset;
141         struct page *page;
142         void *vaddr;
143         struct us122l *us122l = area->vm_private_data;
144         struct usb_stream *s;
145
146         mutex_lock(&us122l->mutex);
147         s = us122l->sk.s;
148         if (!s)
149                 goto unlock;
150
151         offset = vmf->pgoff << PAGE_SHIFT;
152         if (offset < PAGE_ALIGN(s->read_size))
153                 vaddr = (char *)s + offset;
154         else {
155                 offset -= PAGE_ALIGN(s->read_size);
156                 if (offset >= PAGE_ALIGN(s->write_size))
157                         goto unlock;
158
159                 vaddr = us122l->sk.write_page + offset;
160         }
161         page = virt_to_page(vaddr);
162
163         get_page(page);
164         mutex_unlock(&us122l->mutex);
165
166         vmf->page = page;
167
168         return 0;
169 unlock:
170         mutex_unlock(&us122l->mutex);
171         return VM_FAULT_SIGBUS;
172 }
173
174 static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)
175 {
176         struct us122l *us122l = area->vm_private_data;
177         atomic_dec(&us122l->mmap_count);
178         snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
179 }
180
181 static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
182         .open = usb_stream_hwdep_vm_open,
183         .fault = usb_stream_hwdep_vm_fault,
184         .close = usb_stream_hwdep_vm_close,
185 };
186
187
188 static int usb_stream_hwdep_open(struct snd_hwdep *hw, struct file *file)
189 {
190         struct us122l   *us122l = hw->private_data;
191         struct usb_interface *iface;
192         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
193         if (hw->used >= 2)
194                 return -EBUSY;
195
196         if (!us122l->first)
197                 us122l->first = file;
198
199         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
200             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
201                 iface = usb_ifnum_to_if(us122l->dev, 0);
202                 usb_autopm_get_interface(iface);
203         }
204         iface = usb_ifnum_to_if(us122l->dev, 1);
205         usb_autopm_get_interface(iface);
206         return 0;
207 }
208
209 static int usb_stream_hwdep_release(struct snd_hwdep *hw, struct file *file)
210 {
211         struct us122l   *us122l = hw->private_data;
212         struct usb_interface *iface;
213         snd_printdd(KERN_DEBUG "%p %p\n", hw, file);
214
215         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
216             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
217                 iface = usb_ifnum_to_if(us122l->dev, 0);
218                 usb_autopm_put_interface(iface);
219         }
220         iface = usb_ifnum_to_if(us122l->dev, 1);
221         usb_autopm_put_interface(iface);
222         if (us122l->first == file)
223                 us122l->first = NULL;
224         mutex_lock(&us122l->mutex);
225         if (us122l->master == file)
226                 us122l->master = us122l->slave;
227
228         us122l->slave = NULL;
229         mutex_unlock(&us122l->mutex);
230         return 0;
231 }
232
233 static int usb_stream_hwdep_mmap(struct snd_hwdep *hw,
234                                  struct file *filp, struct vm_area_struct *area)
235 {
236         unsigned long   size = area->vm_end - area->vm_start;
237         struct us122l   *us122l = hw->private_data;
238         unsigned long offset;
239         struct usb_stream *s;
240         int err = 0;
241         bool read;
242
243         offset = area->vm_pgoff << PAGE_SHIFT;
244         mutex_lock(&us122l->mutex);
245         s = us122l->sk.s;
246         read = offset < s->read_size;
247         if (read && area->vm_flags & VM_WRITE) {
248                 err = -EPERM;
249                 goto out;
250         }
251         snd_printdd(KERN_DEBUG "%lu %u\n", size,
252                     read ? s->read_size : s->write_size);
253         /* if userspace tries to mmap beyond end of our buffer, fail */
254         if (size > PAGE_ALIGN(read ? s->read_size : s->write_size)) {
255                 snd_printk(KERN_WARNING "%lu > %u\n", size,
256                            read ? s->read_size : s->write_size);
257                 err = -EINVAL;
258                 goto out;
259         }
260
261         area->vm_ops = &usb_stream_hwdep_vm_ops;
262         area->vm_flags |= VM_RESERVED;
263         area->vm_private_data = us122l;
264         atomic_inc(&us122l->mmap_count);
265 out:
266         mutex_unlock(&us122l->mutex);
267         return err;
268 }
269
270 static unsigned int usb_stream_hwdep_poll(struct snd_hwdep *hw,
271                                           struct file *file, poll_table *wait)
272 {
273         struct us122l   *us122l = hw->private_data;
274         struct usb_stream *s = us122l->sk.s;
275         unsigned        *polled;
276         unsigned int    mask;
277
278         poll_wait(file, &us122l->sk.sleep, wait);
279
280         switch (s->state) {
281         case usb_stream_ready:
282                 if (us122l->first == file)
283                         polled = &s->periods_polled;
284                 else
285                         polled = &us122l->second_periods_polled;
286                 if (*polled != s->periods_done) {
287                         *polled = s->periods_done;
288                         mask = POLLIN | POLLOUT | POLLWRNORM;
289                         break;
290                 }
291                 /* Fall through */
292                 mask = 0;
293                 break;
294         default:
295                 mask = POLLIN | POLLOUT | POLLWRNORM | POLLERR;
296                 break;
297         }
298         return mask;
299 }
300
301 static void us122l_stop(struct us122l *us122l)
302 {
303         struct list_head *p;
304         list_for_each(p, &us122l->midi_list)
305                 snd_usbmidi_input_stop(p);
306
307         usb_stream_stop(&us122l->sk);
308         usb_stream_free(&us122l->sk);
309 }
310
311 static int us122l_set_sample_rate(struct usb_device *dev, int rate)
312 {
313         unsigned int ep = 0x81;
314         unsigned char data[3];
315         int err;
316
317         data[0] = rate;
318         data[1] = rate >> 8;
319         data[2] = rate >> 16;
320         err = us122l_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
321                              USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
322                              UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000);
323         if (err < 0)
324                 snd_printk(KERN_ERR "%d: cannot set freq %d to ep 0x%x\n",
325                            dev->devnum, rate, ep);
326         return err;
327 }
328
329 static bool us122l_start(struct us122l *us122l,
330                          unsigned rate, unsigned period_frames)
331 {
332         struct list_head *p;
333         int err;
334         unsigned use_packsize = 0;
335         bool success = false;
336
337         if (us122l->dev->speed == USB_SPEED_HIGH) {
338                 /* The us-122l's descriptor defaults to iso max_packsize 78,
339                    which isn't needed for samplerates <= 48000.
340                    Lets save some memory:
341                 */
342                 switch (rate) {
343                 case 44100:
344                         use_packsize = 36;
345                         break;
346                 case 48000:
347                         use_packsize = 42;
348                         break;
349                 case 88200:
350                         use_packsize = 72;
351                         break;
352                 }
353         }
354         if (!usb_stream_new(&us122l->sk, us122l->dev, 1, 2,
355                             rate, use_packsize, period_frames, 6))
356                 goto out;
357
358         err = us122l_set_sample_rate(us122l->dev, rate);
359         if (err < 0) {
360                 us122l_stop(us122l);
361                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
362                 goto out;
363         }
364         err = usb_stream_start(&us122l->sk);
365         if (err < 0) {
366                 us122l_stop(us122l);
367                 snd_printk(KERN_ERR "us122l_start error %i \n", err);
368                 goto out;
369         }
370         list_for_each(p, &us122l->midi_list)
371                 snd_usbmidi_input_start(p);
372         success = true;
373 out:
374         return success;
375 }
376
377 static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
378                                   unsigned cmd, unsigned long arg)
379 {
380         struct usb_stream_config *cfg;
381         struct us122l *us122l = hw->private_data;
382         unsigned min_period_frames;
383         int err = 0;
384         bool high_speed;
385
386         if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS)
387                 return -ENOTTY;
388
389         cfg = memdup_user((void *)arg, sizeof(*cfg));
390         if (IS_ERR(cfg))
391                 return PTR_ERR(cfg);
392
393         if (cfg->version != USB_STREAM_INTERFACE_VERSION) {
394                 err = -ENXIO;
395                 goto free;
396         }
397         high_speed = us122l->dev->speed == USB_SPEED_HIGH;
398         if ((cfg->sample_rate != 44100 && cfg->sample_rate != 48000  &&
399              (!high_speed ||
400               (cfg->sample_rate != 88200 && cfg->sample_rate != 96000))) ||
401             cfg->frame_size != 6 ||
402             cfg->period_frames > 0x3000) {
403                 err = -EINVAL;
404                 goto free;
405         }
406         switch (cfg->sample_rate) {
407         case 44100:
408                 min_period_frames = 48;
409                 break;
410         case 48000:
411                 min_period_frames = 52;
412                 break;
413         default:
414                 min_period_frames = 104;
415                 break;
416         }
417         if (!high_speed)
418                 min_period_frames <<= 1;
419         if (cfg->period_frames < min_period_frames) {
420                 err = -EINVAL;
421                 goto free;
422         }
423
424         snd_power_wait(hw->card, SNDRV_CTL_POWER_D0);
425
426         mutex_lock(&us122l->mutex);
427         if (!us122l->master)
428                 us122l->master = file;
429         else if (us122l->master != file) {
430                 if (memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg))) {
431                         err = -EIO;
432                         goto unlock;
433                 }
434                 us122l->slave = file;
435         }
436         if (!us122l->sk.s ||
437             memcmp(cfg, &us122l->sk.s->cfg, sizeof(*cfg)) ||
438             us122l->sk.s->state == usb_stream_xrun) {
439                 us122l_stop(us122l);
440                 if (!us122l_start(us122l, cfg->sample_rate, cfg->period_frames))
441                         err = -EIO;
442                 else
443                         err = 1;
444         }
445 unlock:
446         mutex_unlock(&us122l->mutex);
447 free:
448         kfree(cfg);
449         return err;
450 }
451
452 #define SND_USB_STREAM_ID "USB STREAM"
453 static int usb_stream_hwdep_new(struct snd_card *card)
454 {
455         int err;
456         struct snd_hwdep *hw;
457         struct usb_device *dev = US122L(card)->dev;
458
459         err = snd_hwdep_new(card, SND_USB_STREAM_ID, 0, &hw);
460         if (err < 0)
461                 return err;
462
463         hw->iface = SNDRV_HWDEP_IFACE_USB_STREAM;
464         hw->private_data = US122L(card);
465         hw->ops.open = usb_stream_hwdep_open;
466         hw->ops.release = usb_stream_hwdep_release;
467         hw->ops.ioctl = usb_stream_hwdep_ioctl;
468         hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
469         hw->ops.mmap = usb_stream_hwdep_mmap;
470         hw->ops.poll = usb_stream_hwdep_poll;
471
472         sprintf(hw->name, "/proc/bus/usb/%03d/%03d/hwdeppcm",
473                 dev->bus->busnum, dev->devnum);
474         return 0;
475 }
476
477
478 static bool us122l_create_card(struct snd_card *card)
479 {
480         int err;
481         struct us122l *us122l = US122L(card);
482
483         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
484             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
485                 err = usb_set_interface(us122l->dev, 0, 1);
486                 if (err) {
487                         snd_printk(KERN_ERR "usb_set_interface error \n");
488                         return false;
489                 }
490         }
491         err = usb_set_interface(us122l->dev, 1, 1);
492         if (err) {
493                 snd_printk(KERN_ERR "usb_set_interface error \n");
494                 return false;
495         }
496
497         pt_info_set(us122l->dev, 0x11);
498         pt_info_set(us122l->dev, 0x10);
499
500         if (!us122l_start(us122l, 44100, 256))
501                 return false;
502
503         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
504             us122l->dev->descriptor.idProduct == USB_ID_US144MKII)
505                 err = us144_create_usbmidi(card);
506         else
507                 err = us122l_create_usbmidi(card);
508         if (err < 0) {
509                 snd_printk(KERN_ERR "us122l_create_usbmidi error %i \n", err);
510                 us122l_stop(us122l);
511                 return false;
512         }
513         err = usb_stream_hwdep_new(card);
514         if (err < 0) {
515 /* release the midi resources */
516                 struct list_head *p;
517                 list_for_each(p, &us122l->midi_list)
518                         snd_usbmidi_disconnect(p);
519
520                 us122l_stop(us122l);
521                 return false;
522         }
523         return true;
524 }
525
526 static void snd_us122l_free(struct snd_card *card)
527 {
528         struct us122l   *us122l = US122L(card);
529         int             index = us122l->card_index;
530         if (index >= 0  &&  index < SNDRV_CARDS)
531                 snd_us122l_card_used[index] = 0;
532 }
533
534 static int usx2y_create_card(struct usb_device *device, struct snd_card **cardp)
535 {
536         int             dev;
537         struct snd_card *card;
538         int err;
539
540         for (dev = 0; dev < SNDRV_CARDS; ++dev)
541                 if (enable[dev] && !snd_us122l_card_used[dev])
542                         break;
543         if (dev >= SNDRV_CARDS)
544                 return -ENODEV;
545         err = snd_card_create(index[dev], id[dev], THIS_MODULE,
546                               sizeof(struct us122l), &card);
547         if (err < 0)
548                 return err;
549         snd_us122l_card_used[US122L(card)->card_index = dev] = 1;
550         card->private_free = snd_us122l_free;
551         US122L(card)->dev = device;
552         mutex_init(&US122L(card)->mutex);
553         init_waitqueue_head(&US122L(card)->sk.sleep);
554         INIT_LIST_HEAD(&US122L(card)->midi_list);
555         strcpy(card->driver, "USB "NAME_ALLCAPS"");
556         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
557         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
558                 card->shortname,
559                 le16_to_cpu(device->descriptor.idVendor),
560                 le16_to_cpu(device->descriptor.idProduct),
561                 0,
562                 US122L(card)->dev->bus->busnum,
563                 US122L(card)->dev->devnum
564                 );
565         *cardp = card;
566         return 0;
567 }
568
569 static int us122l_usb_probe(struct usb_interface *intf,
570                             const struct usb_device_id *device_id,
571                             struct snd_card **cardp)
572 {
573         struct usb_device *device = interface_to_usbdev(intf);
574         struct snd_card *card;
575         int err;
576
577         err = usx2y_create_card(device, &card);
578         if (err < 0)
579                 return err;
580
581         snd_card_set_dev(card, &intf->dev);
582         if (!us122l_create_card(card)) {
583                 snd_card_free(card);
584                 return -EINVAL;
585         }
586
587         err = snd_card_register(card);
588         if (err < 0) {
589                 snd_card_free(card);
590                 return err;
591         }
592
593         usb_get_intf(usb_ifnum_to_if(device, 0));
594         usb_get_dev(device);
595         *cardp = card;
596         return 0;
597 }
598
599 static int snd_us122l_probe(struct usb_interface *intf,
600                             const struct usb_device_id *id)
601 {
602         struct usb_device *device = interface_to_usbdev(intf);
603         struct snd_card *card;
604         int err;
605
606         if ((device->descriptor.idProduct == USB_ID_US144 ||
607              device->descriptor.idProduct == USB_ID_US144MKII)
608                 && device->speed == USB_SPEED_HIGH) {
609                 snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n");
610                 return -ENODEV;
611         }
612
613         snd_printdd(KERN_DEBUG"%p:%i\n",
614                     intf, intf->cur_altsetting->desc.bInterfaceNumber);
615         if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
616                 return 0;
617
618         err = us122l_usb_probe(usb_get_intf(intf), id, &card);
619         if (err < 0) {
620                 usb_put_intf(intf);
621                 return err;
622         }
623
624         usb_set_intfdata(intf, card);
625         return 0;
626 }
627
628 static void snd_us122l_disconnect(struct usb_interface *intf)
629 {
630         struct snd_card *card;
631         struct us122l *us122l;
632         struct list_head *p;
633
634         card = usb_get_intfdata(intf);
635         if (!card)
636                 return;
637
638         snd_card_disconnect(card);
639
640         us122l = US122L(card);
641         mutex_lock(&us122l->mutex);
642         us122l_stop(us122l);
643         mutex_unlock(&us122l->mutex);
644
645 /* release the midi resources */
646         list_for_each(p, &us122l->midi_list) {
647                 snd_usbmidi_disconnect(p);
648         }
649
650         usb_put_intf(usb_ifnum_to_if(us122l->dev, 0));
651         usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
652         usb_put_dev(us122l->dev);
653
654         while (atomic_read(&us122l->mmap_count))
655                 msleep(500);
656
657         snd_card_free(card);
658 }
659
660 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)
661 {
662         struct snd_card *card;
663         struct us122l *us122l;
664         struct list_head *p;
665
666         card = usb_get_intfdata(intf);
667         if (!card)
668                 return 0;
669         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
670
671         us122l = US122L(card);
672         if (!us122l)
673                 return 0;
674
675         list_for_each(p, &us122l->midi_list)
676                 snd_usbmidi_input_stop(p);
677
678         mutex_lock(&us122l->mutex);
679         usb_stream_stop(&us122l->sk);
680         mutex_unlock(&us122l->mutex);
681
682         return 0;
683 }
684
685 static int snd_us122l_resume(struct usb_interface *intf)
686 {
687         struct snd_card *card;
688         struct us122l *us122l;
689         struct list_head *p;
690         int err;
691
692         card = usb_get_intfdata(intf);
693         if (!card)
694                 return 0;
695
696         us122l = US122L(card);
697         if (!us122l)
698                 return 0;
699
700         mutex_lock(&us122l->mutex);
701         /* needed, doesn't restart without: */
702         if (us122l->dev->descriptor.idProduct == USB_ID_US144 ||
703             us122l->dev->descriptor.idProduct == USB_ID_US144MKII) {
704                 err = usb_set_interface(us122l->dev, 0, 1);
705                 if (err) {
706                         snd_printk(KERN_ERR "usb_set_interface error \n");
707                         goto unlock;
708                 }
709         }
710         err = usb_set_interface(us122l->dev, 1, 1);
711         if (err) {
712                 snd_printk(KERN_ERR "usb_set_interface error \n");
713                 goto unlock;
714         }
715
716         pt_info_set(us122l->dev, 0x11);
717         pt_info_set(us122l->dev, 0x10);
718
719         err = us122l_set_sample_rate(us122l->dev,
720                                      us122l->sk.s->cfg.sample_rate);
721         if (err < 0) {
722                 snd_printk(KERN_ERR "us122l_set_sample_rate error \n");
723                 goto unlock;
724         }
725         err = usb_stream_start(&us122l->sk);
726         if (err)
727                 goto unlock;
728
729         list_for_each(p, &us122l->midi_list)
730                 snd_usbmidi_input_start(p);
731 unlock:
732         mutex_unlock(&us122l->mutex);
733         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
734         return err;
735 }
736
737 static struct usb_device_id snd_us122l_usb_id_table[] = {
738         {
739                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
740                 .idVendor =     0x0644,
741                 .idProduct =    USB_ID_US122L
742         },
743         {       /* US-144 only works at USB1.1! Disable module ehci-hcd. */
744                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
745                 .idVendor =     0x0644,
746                 .idProduct =    USB_ID_US144
747         },
748         {
749                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
750                 .idVendor =     0x0644,
751                 .idProduct =    USB_ID_US122MKII
752         },
753         {
754                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
755                 .idVendor =     0x0644,
756                 .idProduct =    USB_ID_US144MKII
757         },
758         { /* terminator */ }
759 };
760
761 MODULE_DEVICE_TABLE(usb, snd_us122l_usb_id_table);
762 static struct usb_driver snd_us122l_usb_driver = {
763         .name =         "snd-usb-us122l",
764         .probe =        snd_us122l_probe,
765         .disconnect =   snd_us122l_disconnect,
766         .suspend =      snd_us122l_suspend,
767         .resume =       snd_us122l_resume,
768         .reset_resume = snd_us122l_resume,
769         .id_table =     snd_us122l_usb_id_table,
770         .supports_autosuspend = 1
771 };
772
773
774 static int __init snd_us122l_module_init(void)
775 {
776         return usb_register(&snd_us122l_usb_driver);
777 }
778
779 static void __exit snd_us122l_module_exit(void)
780 {
781         usb_deregister(&snd_us122l_usb_driver);
782 }
783
784 module_init(snd_us122l_module_init)
785 module_exit(snd_us122l_module_exit)