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