root/sound/usb/usx2y/usbusx2y.c

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DEFINITIONS

This source file includes following definitions.
  1. i_usX2Y_Out04Int
  2. i_usX2Y_In04Int
  3. usX2Y_AsyncSeq04_init
  4. usX2Y_In04_init
  5. usX2Y_unlinkSeq
  6. usX2Y_create_card
  7. usX2Y_usb_probe
  8. snd_usX2Y_probe
  9. snd_usX2Y_disconnect
  10. snd_usX2Y_card_private_free
  11. usX2Y_usb_disconnect
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * usbusy2y.c - ALSA USB US-428 Driver
   4  *
   5 2005-04-14 Karsten Wiese
   6         Version 0.8.7.2:
   7         Call snd_card_free() instead of snd_card_free_in_thread() to prevent oops with dead keyboard symptom.
   8         Tested ok with kernel 2.6.12-rc2.
   9 
  10 2004-12-14 Karsten Wiese
  11         Version 0.8.7.1:
  12         snd_pcm_open for rawusb pcm-devices now returns -EBUSY if called without rawusb's hwdep device being open.
  13 
  14 2004-12-02 Karsten Wiese
  15         Version 0.8.7:
  16         Use macro usb_maxpacket() for portability.
  17 
  18 2004-10-26 Karsten Wiese
  19         Version 0.8.6:
  20         wake_up() process waiting in usX2Y_urbs_start() on error.
  21 
  22 2004-10-21 Karsten Wiese
  23         Version 0.8.5:
  24         nrpacks is runtime or compiletime configurable now with tested values from 1 to 4.
  25 
  26 2004-10-03 Karsten Wiese
  27         Version 0.8.2:
  28         Avoid any possible racing while in prepare callback.
  29 
  30 2004-09-30 Karsten Wiese
  31         Version 0.8.0:
  32         Simplified things and made ohci work again.
  33 
  34 2004-09-20 Karsten Wiese
  35         Version 0.7.3:
  36         Use usb_kill_urb() instead of deprecated (kernel 2.6.9) usb_unlink_urb().
  37 
  38 2004-07-13 Karsten Wiese
  39         Version 0.7.1:
  40         Don't sleep in START/STOP callbacks anymore.
  41         us428 channels C/D not handled just for this version, sorry.
  42 
  43 2004-06-21 Karsten Wiese
  44         Version 0.6.4:
  45         Temporarely suspend midi input
  46         to sanely call usb_set_interface() when setting format.
  47 
  48 2004-06-12 Karsten Wiese
  49         Version 0.6.3:
  50         Made it thus the following rule is enforced:
  51         "All pcm substreams of one usX2Y have to operate at the same rate & format."
  52 
  53 2004-04-06 Karsten Wiese
  54         Version 0.6.0:
  55         Runs on 2.6.5 kernel without any "--with-debug=" things.
  56         us224 reported running.
  57 
  58 2004-01-14 Karsten Wiese
  59         Version 0.5.1:
  60         Runs with 2.6.1 kernel.
  61 
  62 2003-12-30 Karsten Wiese
  63         Version 0.4.1:
  64         Fix 24Bit 4Channel capturing for the us428.
  65 
  66 2003-11-27 Karsten Wiese, Martin Langer
  67         Version 0.4:
  68         us122 support.
  69         us224 could be tested by uncommenting the sections containing USB_ID_US224
  70 
  71 2003-11-03 Karsten Wiese
  72         Version 0.3:
  73         24Bit support. 
  74         "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.
  75 
  76 2003-08-22 Karsten Wiese
  77         Version 0.0.8:
  78         Removed EZUSB Firmware. First Stage Firmwaredownload is now done by tascam-firmware downloader.
  79         See:
  80         http://usb-midi-fw.sourceforge.net/tascam-firmware.tar.gz
  81 
  82 2003-06-18 Karsten Wiese
  83         Version 0.0.5:
  84         changed to compile with kernel 2.4.21 and alsa 0.9.4
  85 
  86 2002-10-16 Karsten Wiese
  87         Version 0.0.4:
  88         compiles again with alsa-current.
  89         USB_ISO_ASAP not used anymore (most of the time), instead
  90         urb->start_frame is calculated here now, some calls inside usb-driver don't need to happen anymore.
  91 
  92         To get the best out of this:
  93         Disable APM-support in the kernel as APM-BIOS calls (once each second) hard disable interrupt for many precious milliseconds.
  94         This helped me much on my slowish PII 400 & PIII 500.
  95         ACPI yet untested but might cause the same bad behaviour.
  96         Use a kernel with lowlatency and preemptiv patches applied.
  97         To autoload snd-usb-midi append a line 
  98                 post-install snd-usb-us428 modprobe snd-usb-midi
  99         to /etc/modules.conf.
 100 
 101         known problems:
 102         sliders, knobs, lights not yet handled except MASTER Volume slider.
 103         "pcm -c 2" doesn't work. "pcm -c 2 -m direct_interleaved" does.
 104         KDE3: "Enable full duplex operation" deadlocks.
 105 
 106         
 107 2002-08-31 Karsten Wiese
 108         Version 0.0.3: audio also simplex;
 109         simplifying: iso urbs only 1 packet, melted structs.
 110         ASYNC_UNLINK not used anymore: no more crashes so far.....
 111         for alsa 0.9 rc3.
 112 
 113 2002-08-09 Karsten Wiese
 114         Version 0.0.2: midi works with snd-usb-midi, audio (only fullduplex now) with i.e. bristol.
 115         The firmware has been sniffed from win2k us-428 driver 3.09.
 116 
 117  *   Copyright (c) 2002 - 2004 Karsten Wiese
 118 */
 119 
 120 #include <linux/init.h>
 121 #include <linux/module.h>
 122 #include <linux/moduleparam.h>
 123 #include <linux/slab.h>
 124 #include <linux/interrupt.h>
 125 #include <linux/usb.h>
 126 #include <sound/core.h>
 127 #include <sound/initval.h>
 128 #include <sound/pcm.h>
 129 
 130 #include <sound/rawmidi.h>
 131 #include "usx2y.h"
 132 #include "usbusx2y.h"
 133 #include "usX2Yhwdep.h"
 134 
 135 
 136 
 137 MODULE_AUTHOR("Karsten Wiese <annabellesgarden@yahoo.de>");
 138 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.8.7.2");
 139 MODULE_LICENSE("GPL");
 140 MODULE_SUPPORTED_DEVICE("{{TASCAM(0x1604),"NAME_ALLCAPS"(0x8001)(0x8005)(0x8007)}}");
 141 
 142 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
 143 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
 144 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
 145 
 146 module_param_array(index, int, NULL, 0444);
 147 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
 148 module_param_array(id, charp, NULL, 0444);
 149 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
 150 module_param_array(enable, bool, NULL, 0444);
 151 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
 152 
 153 
 154 static int snd_usX2Y_card_used[SNDRV_CARDS];
 155 
 156 static void usX2Y_usb_disconnect(struct usb_device* usb_device, void* ptr);
 157 static void snd_usX2Y_card_private_free(struct snd_card *card);
 158 
 159 /* 
 160  * pipe 4 is used for switching the lamps, setting samplerate, volumes ....   
 161  */
 162 static void i_usX2Y_Out04Int(struct urb *urb)
 163 {
 164 #ifdef CONFIG_SND_DEBUG
 165         if (urb->status) {
 166                 int             i;
 167                 struct usX2Ydev *usX2Y = urb->context;
 168                 for (i = 0; i < 10 && usX2Y->AS04.urb[i] != urb; i++);
 169                 snd_printdd("i_usX2Y_Out04Int() urb %i status=%i\n", i, urb->status);
 170         }
 171 #endif
 172 }
 173 
 174 static void i_usX2Y_In04Int(struct urb *urb)
 175 {
 176         int                     err = 0;
 177         struct usX2Ydev         *usX2Y = urb->context;
 178         struct us428ctls_sharedmem      *us428ctls = usX2Y->us428ctls_sharedmem;
 179 
 180         usX2Y->In04IntCalls++;
 181 
 182         if (urb->status) {
 183                 snd_printdd("Interrupt Pipe 4 came back with status=%i\n", urb->status);
 184                 return;
 185         }
 186 
 187         //      printk("%i:0x%02X ", 8, (int)((unsigned char*)usX2Y->In04Buf)[8]); Master volume shows 0 here if fader is at max during boot ?!?
 188         if (us428ctls) {
 189                 int diff = -1;
 190                 if (-2 == us428ctls->CtlSnapShotLast) {
 191                         diff = 0;
 192                         memcpy(usX2Y->In04Last, usX2Y->In04Buf, sizeof(usX2Y->In04Last));
 193                         us428ctls->CtlSnapShotLast = -1;
 194                 } else {
 195                         int i;
 196                         for (i = 0; i < 21; i++) {
 197                                 if (usX2Y->In04Last[i] != ((char*)usX2Y->In04Buf)[i]) {
 198                                         if (diff < 0)
 199                                                 diff = i;
 200                                         usX2Y->In04Last[i] = ((char*)usX2Y->In04Buf)[i];
 201                                 }
 202                         }
 203                 }
 204                 if (0 <= diff) {
 205                         int n = us428ctls->CtlSnapShotLast + 1;
 206                         if (n >= N_us428_ctl_BUFS  ||  n < 0)
 207                                 n = 0;
 208                         memcpy(us428ctls->CtlSnapShot + n, usX2Y->In04Buf, sizeof(us428ctls->CtlSnapShot[0]));
 209                         us428ctls->CtlSnapShotDiffersAt[n] = diff;
 210                         us428ctls->CtlSnapShotLast = n;
 211                         wake_up(&usX2Y->us428ctls_wait_queue_head);
 212                 }
 213         }
 214         
 215         
 216         if (usX2Y->US04) {
 217                 if (0 == usX2Y->US04->submitted)
 218                         do {
 219                                 err = usb_submit_urb(usX2Y->US04->urb[usX2Y->US04->submitted++], GFP_ATOMIC);
 220                         } while (!err && usX2Y->US04->submitted < usX2Y->US04->len);
 221         } else
 222                 if (us428ctls && us428ctls->p4outLast >= 0 && us428ctls->p4outLast < N_us428_p4out_BUFS) {
 223                         if (us428ctls->p4outLast != us428ctls->p4outSent) {
 224                                 int j, send = us428ctls->p4outSent + 1;
 225                                 if (send >= N_us428_p4out_BUFS)
 226                                         send = 0;
 227                                 for (j = 0; j < URBS_AsyncSeq  &&  !err; ++j)
 228                                         if (0 == usX2Y->AS04.urb[j]->status) {
 229                                                 struct us428_p4out *p4out = us428ctls->p4out + send;    // FIXME if more than 1 p4out is new, 1 gets lost.
 230                                                 usb_fill_bulk_urb(usX2Y->AS04.urb[j], usX2Y->dev,
 231                                                                   usb_sndbulkpipe(usX2Y->dev, 0x04), &p4out->val.vol,
 232                                                                   p4out->type == eLT_Light ? sizeof(struct us428_lights) : 5,
 233                                                                   i_usX2Y_Out04Int, usX2Y);
 234                                                 err = usb_submit_urb(usX2Y->AS04.urb[j], GFP_ATOMIC);
 235                                                 us428ctls->p4outSent = send;
 236                                                 break;
 237                                         }
 238                         }
 239                 }
 240 
 241         if (err)
 242                 snd_printk(KERN_ERR "In04Int() usb_submit_urb err=%i\n", err);
 243 
 244         urb->dev = usX2Y->dev;
 245         usb_submit_urb(urb, GFP_ATOMIC);
 246 }
 247 
 248 /*
 249  * Prepare some urbs
 250  */
 251 int usX2Y_AsyncSeq04_init(struct usX2Ydev *usX2Y)
 252 {
 253         int     err = 0,
 254                 i;
 255 
 256         usX2Y->AS04.buffer = kmalloc_array(URBS_AsyncSeq,
 257                                            URB_DataLen_AsyncSeq, GFP_KERNEL);
 258         if (NULL == usX2Y->AS04.buffer) {
 259                 err = -ENOMEM;
 260         } else
 261                 for (i = 0; i < URBS_AsyncSeq; ++i) {
 262                         if (NULL == (usX2Y->AS04.urb[i] = usb_alloc_urb(0, GFP_KERNEL))) {
 263                                 err = -ENOMEM;
 264                                 break;
 265                         }
 266                         usb_fill_bulk_urb(      usX2Y->AS04.urb[i], usX2Y->dev,
 267                                                 usb_sndbulkpipe(usX2Y->dev, 0x04),
 268                                                 usX2Y->AS04.buffer + URB_DataLen_AsyncSeq*i, 0,
 269                                                 i_usX2Y_Out04Int, usX2Y
 270                                 );
 271                         err = usb_urb_ep_type_check(usX2Y->AS04.urb[i]);
 272                         if (err < 0)
 273                                 break;
 274                 }
 275         return err;
 276 }
 277 
 278 int usX2Y_In04_init(struct usX2Ydev *usX2Y)
 279 {
 280         if (! (usX2Y->In04urb = usb_alloc_urb(0, GFP_KERNEL)))
 281                 return -ENOMEM;
 282 
 283         if (! (usX2Y->In04Buf = kmalloc(21, GFP_KERNEL)))
 284                 return -ENOMEM;
 285          
 286         init_waitqueue_head(&usX2Y->In04WaitQueue);
 287         usb_fill_int_urb(usX2Y->In04urb, usX2Y->dev, usb_rcvintpipe(usX2Y->dev, 0x4),
 288                          usX2Y->In04Buf, 21,
 289                          i_usX2Y_In04Int, usX2Y,
 290                          10);
 291         if (usb_urb_ep_type_check(usX2Y->In04urb))
 292                 return -EINVAL;
 293         return usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
 294 }
 295 
 296 static void usX2Y_unlinkSeq(struct snd_usX2Y_AsyncSeq *S)
 297 {
 298         int     i;
 299         for (i = 0; i < URBS_AsyncSeq; ++i) {
 300                 usb_kill_urb(S->urb[i]);
 301                 usb_free_urb(S->urb[i]);
 302                 S->urb[i] = NULL;
 303         }
 304         kfree(S->buffer);
 305 }
 306 
 307 
 308 static const struct usb_device_id snd_usX2Y_usb_id_table[] = {
 309         {
 310                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 311                 .idVendor =     0x1604,
 312                 .idProduct =    USB_ID_US428 
 313         },
 314         {
 315                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 316                 .idVendor =     0x1604,
 317                 .idProduct =    USB_ID_US122 
 318         },
 319         {
 320                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
 321                 .idVendor =     0x1604,
 322                 .idProduct =    USB_ID_US224
 323         },
 324         { /* terminator */ }
 325 };
 326 
 327 static int usX2Y_create_card(struct usb_device *device,
 328                              struct usb_interface *intf,
 329                              struct snd_card **cardp)
 330 {
 331         int             dev;
 332         struct snd_card *       card;
 333         int err;
 334 
 335         for (dev = 0; dev < SNDRV_CARDS; ++dev)
 336                 if (enable[dev] && !snd_usX2Y_card_used[dev])
 337                         break;
 338         if (dev >= SNDRV_CARDS)
 339                 return -ENODEV;
 340         err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
 341                            sizeof(struct usX2Ydev), &card);
 342         if (err < 0)
 343                 return err;
 344         snd_usX2Y_card_used[usX2Y(card)->card_index = dev] = 1;
 345         card->private_free = snd_usX2Y_card_private_free;
 346         usX2Y(card)->dev = device;
 347         init_waitqueue_head(&usX2Y(card)->prepare_wait_queue);
 348         mutex_init(&usX2Y(card)->pcm_mutex);
 349         INIT_LIST_HEAD(&usX2Y(card)->midi_list);
 350         strcpy(card->driver, "USB "NAME_ALLCAPS"");
 351         sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
 352         sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
 353                 card->shortname, 
 354                 le16_to_cpu(device->descriptor.idVendor),
 355                 le16_to_cpu(device->descriptor.idProduct),
 356                 0,//us428(card)->usbmidi.ifnum,
 357                 usX2Y(card)->dev->bus->busnum, usX2Y(card)->dev->devnum
 358                 );
 359         *cardp = card;
 360         return 0;
 361 }
 362 
 363 
 364 static int usX2Y_usb_probe(struct usb_device *device,
 365                            struct usb_interface *intf,
 366                            const struct usb_device_id *device_id,
 367                            struct snd_card **cardp)
 368 {
 369         int             err;
 370         struct snd_card *       card;
 371 
 372         *cardp = NULL;
 373         if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 ||
 374             (le16_to_cpu(device->descriptor.idProduct) != USB_ID_US122 &&
 375              le16_to_cpu(device->descriptor.idProduct) != USB_ID_US224 &&
 376              le16_to_cpu(device->descriptor.idProduct) != USB_ID_US428))
 377                 return -EINVAL;
 378 
 379         err = usX2Y_create_card(device, intf, &card);
 380         if (err < 0)
 381                 return err;
 382         if ((err = usX2Y_hwdep_new(card, device)) < 0  ||
 383             (err = snd_card_register(card)) < 0) {
 384                 snd_card_free(card);
 385                 return err;
 386         }
 387         *cardp = card;
 388         return 0;
 389 }
 390 
 391 /*
 392  * new 2.5 USB kernel API
 393  */
 394 static int snd_usX2Y_probe(struct usb_interface *intf, const struct usb_device_id *id)
 395 {
 396         struct snd_card *card;
 397         int err;
 398 
 399         err = usX2Y_usb_probe(interface_to_usbdev(intf), intf, id, &card);
 400         if (err < 0)
 401                 return err;
 402         dev_set_drvdata(&intf->dev, card);
 403         return 0;
 404 }
 405 
 406 static void snd_usX2Y_disconnect(struct usb_interface *intf)
 407 {
 408         usX2Y_usb_disconnect(interface_to_usbdev(intf),
 409                                  usb_get_intfdata(intf));
 410 }
 411 
 412 MODULE_DEVICE_TABLE(usb, snd_usX2Y_usb_id_table);
 413 static struct usb_driver snd_usX2Y_usb_driver = {
 414         .name =         "snd-usb-usx2y",
 415         .probe =        snd_usX2Y_probe,
 416         .disconnect =   snd_usX2Y_disconnect,
 417         .id_table =     snd_usX2Y_usb_id_table,
 418 };
 419 
 420 static void snd_usX2Y_card_private_free(struct snd_card *card)
 421 {
 422         kfree(usX2Y(card)->In04Buf);
 423         usb_free_urb(usX2Y(card)->In04urb);
 424         if (usX2Y(card)->us428ctls_sharedmem)
 425                 free_pages_exact(usX2Y(card)->us428ctls_sharedmem,
 426                                  sizeof(*usX2Y(card)->us428ctls_sharedmem));
 427         if (usX2Y(card)->card_index >= 0  &&  usX2Y(card)->card_index < SNDRV_CARDS)
 428                 snd_usX2Y_card_used[usX2Y(card)->card_index] = 0;
 429 }
 430 
 431 /*
 432  * Frees the device.
 433  */
 434 static void usX2Y_usb_disconnect(struct usb_device *device, void* ptr)
 435 {
 436         if (ptr) {
 437                 struct snd_card *card = ptr;
 438                 struct usX2Ydev *usX2Y = usX2Y(card);
 439                 struct list_head *p;
 440                 usX2Y->chip_status = USX2Y_STAT_CHIP_HUP;
 441                 usX2Y_unlinkSeq(&usX2Y->AS04);
 442                 usb_kill_urb(usX2Y->In04urb);
 443                 snd_card_disconnect(card);
 444                 /* release the midi resources */
 445                 list_for_each(p, &usX2Y->midi_list) {
 446                         snd_usbmidi_disconnect(p);
 447                 }
 448                 if (usX2Y->us428ctls_sharedmem) 
 449                         wake_up(&usX2Y->us428ctls_wait_queue_head);
 450                 snd_card_free(card);
 451         }
 452 }
 453 
 454 module_usb_driver(snd_usX2Y_usb_driver);
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