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Linux/sound/usb/usx2y/usbusx2y.c

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  1 /*
  2  * usbusy2y.c - ALSA USB US-428 Driver
  3  *
  4 2005-04-14 Karsten Wiese
  5         Version 0.8.7.2:
  6         Call snd_card_free() instead of snd_card_free_in_thread() to prevent oops with dead keyboard symptom.
  7         Tested ok with kernel 2.6.12-rc2.
  8 
  9 2004-12-14 Karsten Wiese
 10         Version 0.8.7.1:
 11         snd_pcm_open for rawusb pcm-devices now returns -EBUSY if called without rawusb's hwdep device being open.
 12 
 13 2004-12-02 Karsten Wiese
 14         Version 0.8.7:
 15         Use macro usb_maxpacket() for portability.
 16 
 17 2004-10-26 Karsten Wiese
 18         Version 0.8.6:
 19         wake_up() process waiting in usX2Y_urbs_start() on error.
 20 
 21 2004-10-21 Karsten Wiese
 22         Version 0.8.5:
 23         nrpacks is runtime or compiletime configurable now with tested values from 1 to 4.
 24 
 25 2004-10-03 Karsten Wiese
 26         Version 0.8.2:
 27         Avoid any possible racing while in prepare callback.
 28 
 29 2004-09-30 Karsten Wiese
 30         Version 0.8.0:
 31         Simplified things and made ohci work again.
 32 
 33 2004-09-20 Karsten Wiese
 34         Version 0.7.3:
 35         Use usb_kill_urb() instead of deprecated (kernel 2.6.9) usb_unlink_urb().
 36 
 37 2004-07-13 Karsten Wiese
 38         Version 0.7.1:
 39         Don't sleep in START/STOP callbacks anymore.
 40         us428 channels C/D not handled just for this version, sorry.
 41 
 42 2004-06-21 Karsten Wiese
 43         Version 0.6.4:
 44         Temporarely suspend midi input
 45         to sanely call usb_set_interface() when setting format.
 46 
 47 2004-06-12 Karsten Wiese
 48         Version 0.6.3:
 49         Made it thus the following rule is enforced:
 50         "All pcm substreams of one usX2Y have to operate at the same rate & format."
 51 
 52 2004-04-06 Karsten Wiese
 53         Version 0.6.0:
 54         Runs on 2.6.5 kernel without any "--with-debug=" things.
 55         us224 reported running.
 56 
 57 2004-01-14 Karsten Wiese
 58         Version 0.5.1:
 59         Runs with 2.6.1 kernel.
 60 
 61 2003-12-30 Karsten Wiese
 62         Version 0.4.1:
 63         Fix 24Bit 4Channel capturing for the us428.
 64 
 65 2003-11-27 Karsten Wiese, Martin Langer
 66         Version 0.4:
 67         us122 support.
 68         us224 could be tested by uncommenting the sections containing USB_ID_US224
 69 
 70 2003-11-03 Karsten Wiese
 71         Version 0.3:
 72         24Bit support. 
 73         "arecord -D hw:1 -c 2 -r 48000 -M -f S24_3LE|aplay -D hw:1 -c 2 -r 48000 -M -f S24_3LE" works.
 74 
 75 2003-08-22 Karsten Wiese
 76         Version 0.0.8:
 77         Removed EZUSB Firmware. First Stage Firmwaredownload is now done by tascam-firmware downloader.
 78         See:
 79         http://usb-midi-fw.sourceforge.net/tascam-firmware.tar.gz
 80 
 81 2003-06-18 Karsten Wiese
 82         Version 0.0.5:
 83         changed to compile with kernel 2.4.21 and alsa 0.9.4
 84 
 85 2002-10-16 Karsten Wiese
 86         Version 0.0.4:
 87         compiles again with alsa-current.
 88         USB_ISO_ASAP not used anymore (most of the time), instead
 89         urb->start_frame is calculated here now, some calls inside usb-driver don't need to happen anymore.
 90 
 91         To get the best out of this:
 92         Disable APM-support in the kernel as APM-BIOS calls (once each second) hard disable interrupt for many precious milliseconds.
 93         This helped me much on my slowish PII 400 & PIII 500.
 94         ACPI yet untested but might cause the same bad behaviour.
 95         Use a kernel with lowlatency and preemptiv patches applied.
 96         To autoload snd-usb-midi append a line 
 97                 post-install snd-usb-us428 modprobe snd-usb-midi
 98         to /etc/modules.conf.
 99 
100         known problems:
101         sliders, knobs, lights not yet handled except MASTER Volume slider.
102         "pcm -c 2" doesn't work. "pcm -c 2 -m direct_interleaved" does.
103         KDE3: "Enable full duplex operation" deadlocks.
104 
105         
106 2002-08-31 Karsten Wiese
107         Version 0.0.3: audio also simplex;
108         simplifying: iso urbs only 1 packet, melted structs.
109         ASYNC_UNLINK not used anymore: no more crashes so far.....
110         for alsa 0.9 rc3.
111 
112 2002-08-09 Karsten Wiese
113         Version 0.0.2: midi works with snd-usb-midi, audio (only fullduplex now) with i.e. bristol.
114         The firmware has been sniffed from win2k us-428 driver 3.09.
115 
116  *   Copyright (c) 2002 - 2004 Karsten Wiese
117  *
118  *   This program is free software; you can redistribute it and/or modify
119  *   it under the terms of the GNU General Public License as published by
120  *   the Free Software Foundation; either version 2 of the License, or
121  *   (at your option) any later version.
122  *
123  *   This program is distributed in the hope that it will be useful,
124  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
125  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
126  *   GNU General Public License for more details.
127  *
128  *   You should have received a copy of the GNU General Public License
129  *   along with this program; if not, write to the Free Software
130  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
131 */
132 
133 #include <linux/init.h>
134 #include <linux/module.h>
135 #include <linux/moduleparam.h>
136 #include <linux/slab.h>
137 #include <linux/interrupt.h>
138 #include <linux/usb.h>
139 #include <sound/core.h>
140 #include <sound/initval.h>
141 #include <sound/pcm.h>
142 
143 #include <sound/rawmidi.h>
144 #include "usx2y.h"
145 #include "usbusx2y.h"
146 #include "usX2Yhwdep.h"
147 
148 
149 
150 MODULE_AUTHOR("Karsten Wiese <annabellesgarden@yahoo.de>");
151 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.8.7.2");
152 MODULE_LICENSE("GPL");
153 MODULE_SUPPORTED_DEVICE("{{TASCAM(0x1604),"NAME_ALLCAPS"(0x8001)(0x8005)(0x8007)}}");
154 
155 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
156 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
157 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
158 
159 module_param_array(index, int, NULL, 0444);
160 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
161 module_param_array(id, charp, NULL, 0444);
162 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
163 module_param_array(enable, bool, NULL, 0444);
164 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
165 
166 
167 static int snd_usX2Y_card_used[SNDRV_CARDS];
168 
169 static void usX2Y_usb_disconnect(struct usb_device* usb_device, void* ptr);
170 static void snd_usX2Y_card_private_free(struct snd_card *card);
171 
172 /* 
173  * pipe 4 is used for switching the lamps, setting samplerate, volumes ....   
174  */
175 static void i_usX2Y_Out04Int(struct urb *urb)
176 {
177 #ifdef CONFIG_SND_DEBUG
178         if (urb->status) {
179                 int             i;
180                 struct usX2Ydev *usX2Y = urb->context;
181                 for (i = 0; i < 10 && usX2Y->AS04.urb[i] != urb; i++);
182                 snd_printdd("i_usX2Y_Out04Int() urb %i status=%i\n", i, urb->status);
183         }
184 #endif
185 }
186 
187 static void i_usX2Y_In04Int(struct urb *urb)
188 {
189         int                     err = 0;
190         struct usX2Ydev         *usX2Y = urb->context;
191         struct us428ctls_sharedmem      *us428ctls = usX2Y->us428ctls_sharedmem;
192 
193         usX2Y->In04IntCalls++;
194 
195         if (urb->status) {
196                 snd_printdd("Interrupt Pipe 4 came back with status=%i\n", urb->status);
197                 return;
198         }
199 
200         //      printk("%i:0x%02X ", 8, (int)((unsigned char*)usX2Y->In04Buf)[8]); Master volume shows 0 here if fader is at max during boot ?!?
201         if (us428ctls) {
202                 int diff = -1;
203                 if (-2 == us428ctls->CtlSnapShotLast) {
204                         diff = 0;
205                         memcpy(usX2Y->In04Last, usX2Y->In04Buf, sizeof(usX2Y->In04Last));
206                         us428ctls->CtlSnapShotLast = -1;
207                 } else {
208                         int i;
209                         for (i = 0; i < 21; i++) {
210                                 if (usX2Y->In04Last[i] != ((char*)usX2Y->In04Buf)[i]) {
211                                         if (diff < 0)
212                                                 diff = i;
213                                         usX2Y->In04Last[i] = ((char*)usX2Y->In04Buf)[i];
214                                 }
215                         }
216                 }
217                 if (0 <= diff) {
218                         int n = us428ctls->CtlSnapShotLast + 1;
219                         if (n >= N_us428_ctl_BUFS  ||  n < 0)
220                                 n = 0;
221                         memcpy(us428ctls->CtlSnapShot + n, usX2Y->In04Buf, sizeof(us428ctls->CtlSnapShot[0]));
222                         us428ctls->CtlSnapShotDiffersAt[n] = diff;
223                         us428ctls->CtlSnapShotLast = n;
224                         wake_up(&usX2Y->us428ctls_wait_queue_head);
225                 }
226         }
227         
228         
229         if (usX2Y->US04) {
230                 if (0 == usX2Y->US04->submitted)
231                         do {
232                                 err = usb_submit_urb(usX2Y->US04->urb[usX2Y->US04->submitted++], GFP_ATOMIC);
233                         } while (!err && usX2Y->US04->submitted < usX2Y->US04->len);
234         } else
235                 if (us428ctls && us428ctls->p4outLast >= 0 && us428ctls->p4outLast < N_us428_p4out_BUFS) {
236                         if (us428ctls->p4outLast != us428ctls->p4outSent) {
237                                 int j, send = us428ctls->p4outSent + 1;
238                                 if (send >= N_us428_p4out_BUFS)
239                                         send = 0;
240                                 for (j = 0; j < URBS_AsyncSeq  &&  !err; ++j)
241                                         if (0 == usX2Y->AS04.urb[j]->status) {
242                                                 struct us428_p4out *p4out = us428ctls->p4out + send;    // FIXME if more than 1 p4out is new, 1 gets lost.
243                                                 usb_fill_bulk_urb(usX2Y->AS04.urb[j], usX2Y->dev,
244                                                                   usb_sndbulkpipe(usX2Y->dev, 0x04), &p4out->val.vol,
245                                                                   p4out->type == eLT_Light ? sizeof(struct us428_lights) : 5,
246                                                                   i_usX2Y_Out04Int, usX2Y);
247                                                 err = usb_submit_urb(usX2Y->AS04.urb[j], GFP_ATOMIC);
248                                                 us428ctls->p4outSent = send;
249                                                 break;
250                                         }
251                         }
252                 }
253 
254         if (err)
255                 snd_printk(KERN_ERR "In04Int() usb_submit_urb err=%i\n", err);
256 
257         urb->dev = usX2Y->dev;
258         usb_submit_urb(urb, GFP_ATOMIC);
259 }
260 
261 /*
262  * Prepare some urbs
263  */
264 int usX2Y_AsyncSeq04_init(struct usX2Ydev *usX2Y)
265 {
266         int     err = 0,
267                 i;
268 
269         usX2Y->AS04.buffer = kmalloc_array(URBS_AsyncSeq,
270                                            URB_DataLen_AsyncSeq, GFP_KERNEL);
271         if (NULL == usX2Y->AS04.buffer) {
272                 err = -ENOMEM;
273         } else
274                 for (i = 0; i < URBS_AsyncSeq; ++i) {
275                         if (NULL == (usX2Y->AS04.urb[i] = usb_alloc_urb(0, GFP_KERNEL))) {
276                                 err = -ENOMEM;
277                                 break;
278                         }
279                         usb_fill_bulk_urb(      usX2Y->AS04.urb[i], usX2Y->dev,
280                                                 usb_sndbulkpipe(usX2Y->dev, 0x04),
281                                                 usX2Y->AS04.buffer + URB_DataLen_AsyncSeq*i, 0,
282                                                 i_usX2Y_Out04Int, usX2Y
283                                 );
284                         err = usb_urb_ep_type_check(usX2Y->AS04.urb[i]);
285                         if (err < 0)
286                                 break;
287                 }
288         return err;
289 }
290 
291 int usX2Y_In04_init(struct usX2Ydev *usX2Y)
292 {
293         if (! (usX2Y->In04urb = usb_alloc_urb(0, GFP_KERNEL)))
294                 return -ENOMEM;
295 
296         if (! (usX2Y->In04Buf = kmalloc(21, GFP_KERNEL))) {
297                 usb_free_urb(usX2Y->In04urb);
298                 return -ENOMEM;
299         }
300          
301         init_waitqueue_head(&usX2Y->In04WaitQueue);
302         usb_fill_int_urb(usX2Y->In04urb, usX2Y->dev, usb_rcvintpipe(usX2Y->dev, 0x4),
303                          usX2Y->In04Buf, 21,
304                          i_usX2Y_In04Int, usX2Y,
305                          10);
306         if (usb_urb_ep_type_check(usX2Y->In04urb))
307                 return -EINVAL;
308         return usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
309 }
310 
311 static void usX2Y_unlinkSeq(struct snd_usX2Y_AsyncSeq *S)
312 {
313         int     i;
314         for (i = 0; i < URBS_AsyncSeq; ++i) {
315                 usb_kill_urb(S->urb[i]);
316                 usb_free_urb(S->urb[i]);
317                 S->urb[i] = NULL;
318         }
319         kfree(S->buffer);
320 }
321 
322 
323 static const struct usb_device_id snd_usX2Y_usb_id_table[] = {
324         {
325                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
326                 .idVendor =     0x1604,
327                 .idProduct =    USB_ID_US428 
328         },
329         {
330                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
331                 .idVendor =     0x1604,
332                 .idProduct =    USB_ID_US122 
333         },
334         {
335                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
336                 .idVendor =     0x1604,
337                 .idProduct =    USB_ID_US224
338         },
339         { /* terminator */ }
340 };
341 
342 static int usX2Y_create_card(struct usb_device *device,
343                              struct usb_interface *intf,
344                              struct snd_card **cardp)
345 {
346         int             dev;
347         struct snd_card *       card;
348         int err;
349 
350         for (dev = 0; dev < SNDRV_CARDS; ++dev)
351                 if (enable[dev] && !snd_usX2Y_card_used[dev])
352                         break;
353         if (dev >= SNDRV_CARDS)
354                 return -ENODEV;
355         err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
356                            sizeof(struct usX2Ydev), &card);
357         if (err < 0)
358                 return err;
359         snd_usX2Y_card_used[usX2Y(card)->card_index = dev] = 1;
360         card->private_free = snd_usX2Y_card_private_free;
361         usX2Y(card)->dev = device;
362         init_waitqueue_head(&usX2Y(card)->prepare_wait_queue);
363         mutex_init(&usX2Y(card)->pcm_mutex);
364         INIT_LIST_HEAD(&usX2Y(card)->midi_list);
365         strcpy(card->driver, "USB "NAME_ALLCAPS"");
366         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
367         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
368                 card->shortname, 
369                 le16_to_cpu(device->descriptor.idVendor),
370                 le16_to_cpu(device->descriptor.idProduct),
371                 0,//us428(card)->usbmidi.ifnum,
372                 usX2Y(card)->dev->bus->busnum, usX2Y(card)->dev->devnum
373                 );
374         *cardp = card;
375         return 0;
376 }
377 
378 
379 static int usX2Y_usb_probe(struct usb_device *device,
380                            struct usb_interface *intf,
381                            const struct usb_device_id *device_id,
382                            struct snd_card **cardp)
383 {
384         int             err;
385         struct snd_card *       card;
386 
387         *cardp = NULL;
388         if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 ||
389             (le16_to_cpu(device->descriptor.idProduct) != USB_ID_US122 &&
390              le16_to_cpu(device->descriptor.idProduct) != USB_ID_US224 &&
391              le16_to_cpu(device->descriptor.idProduct) != USB_ID_US428))
392                 return -EINVAL;
393 
394         err = usX2Y_create_card(device, intf, &card);
395         if (err < 0)
396                 return err;
397         if ((err = usX2Y_hwdep_new(card, device)) < 0  ||
398             (err = snd_card_register(card)) < 0) {
399                 snd_card_free(card);
400                 return err;
401         }
402         *cardp = card;
403         return 0;
404 }
405 
406 /*
407  * new 2.5 USB kernel API
408  */
409 static int snd_usX2Y_probe(struct usb_interface *intf, const struct usb_device_id *id)
410 {
411         struct snd_card *card;
412         int err;
413 
414         err = usX2Y_usb_probe(interface_to_usbdev(intf), intf, id, &card);
415         if (err < 0)
416                 return err;
417         dev_set_drvdata(&intf->dev, card);
418         return 0;
419 }
420 
421 static void snd_usX2Y_disconnect(struct usb_interface *intf)
422 {
423         usX2Y_usb_disconnect(interface_to_usbdev(intf),
424                                  usb_get_intfdata(intf));
425 }
426 
427 MODULE_DEVICE_TABLE(usb, snd_usX2Y_usb_id_table);
428 static struct usb_driver snd_usX2Y_usb_driver = {
429         .name =         "snd-usb-usx2y",
430         .probe =        snd_usX2Y_probe,
431         .disconnect =   snd_usX2Y_disconnect,
432         .id_table =     snd_usX2Y_usb_id_table,
433 };
434 
435 static void snd_usX2Y_card_private_free(struct snd_card *card)
436 {
437         kfree(usX2Y(card)->In04Buf);
438         usb_free_urb(usX2Y(card)->In04urb);
439         if (usX2Y(card)->us428ctls_sharedmem)
440                 snd_free_pages(usX2Y(card)->us428ctls_sharedmem, sizeof(*usX2Y(card)->us428ctls_sharedmem));
441         if (usX2Y(card)->card_index >= 0  &&  usX2Y(card)->card_index < SNDRV_CARDS)
442                 snd_usX2Y_card_used[usX2Y(card)->card_index] = 0;
443 }
444 
445 /*
446  * Frees the device.
447  */
448 static void usX2Y_usb_disconnect(struct usb_device *device, void* ptr)
449 {
450         if (ptr) {
451                 struct snd_card *card = ptr;
452                 struct usX2Ydev *usX2Y = usX2Y(card);
453                 struct list_head *p;
454                 usX2Y->chip_status = USX2Y_STAT_CHIP_HUP;
455                 usX2Y_unlinkSeq(&usX2Y->AS04);
456                 usb_kill_urb(usX2Y->In04urb);
457                 snd_card_disconnect(card);
458                 /* release the midi resources */
459                 list_for_each(p, &usX2Y->midi_list) {
460                         snd_usbmidi_disconnect(p);
461                 }
462                 if (usX2Y->us428ctls_sharedmem) 
463                         wake_up(&usX2Y->us428ctls_wait_queue_head);
464                 snd_card_free(card);
465         }
466 }
467 
468 module_usb_driver(snd_usX2Y_usb_driver);
469 

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