sound/usb/line6/pod.c

   1 /*
   2  * Line 6 Linux USB driver
   3  *
   4  * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
   5  *
   6  *      This program is free software; you can redistribute it and/or
   7  *      modify it under the terms of the GNU General Public License as
   8  *      published by the Free Software Foundation, version 2.
   9  *
  10  */
  11
  12 #include <linux/slab.h>
  13 #include <linux/wait.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/module.h>
  16 #include <linux/usb.h>
  17
  18 #include <sound/core.h>
  19 #include <sound/control.h>
  20
  21 #include "capture.h"
  22 #include "driver.h"
  23 #include "playback.h"
  24 #include "usbdefs.h"
  25
  26 /*
  27         Locate name in binary program dump
  28 */
  29 #define POD_NAME_OFFSET 0
  30 #define POD_NAME_LENGTH 16
  31
  32 /*
  33         Other constants
  34 */
  35 #define POD_CONTROL_SIZE 0x80
  36 #define POD_BUFSIZE_DUMPREQ 7
  37 #define POD_STARTUP_DELAY 1000
  38
  39 /*
  40         Stages of POD startup procedure
  41 */
  42 enum {
  43         POD_STARTUP_INIT = 1,
  44         POD_STARTUP_VERSIONREQ,
  45         POD_STARTUP_WORKQUEUE,
  46         POD_STARTUP_SETUP,
  47         POD_STARTUP_LAST = POD_STARTUP_SETUP - 1
  48 };
  49
  50 enum {
  51         LINE6_BASSPODXT,
  52         LINE6_BASSPODXTLIVE,
  53         LINE6_BASSPODXTPRO,
  54         LINE6_POCKETPOD,
  55         LINE6_PODXT,
  56         LINE6_PODXTLIVE_POD,
  57         LINE6_PODXTPRO,
  58 };
  59
  60 struct usb_line6_pod {
  61         /**
  62                 Generic Line 6 USB data.
  63         */
  64         struct usb_line6 line6;
  65
  66         /**
  67                 Instrument monitor level.
  68         */
  69         int monitor_level;
  70
  71         /**
  72                 Timer for device initializaton.
  73         */
  74         struct timer_list startup_timer;
  75
  76         /**
  77                 Work handler for device initializaton.
  78         */
  79         struct work_struct startup_work;
  80
  81         /**
  82                 Current progress in startup procedure.
  83         */
  84         int startup_progress;
  85
  86         /**
  87                 Serial number of device.
  88         */
  89         int serial_number;
  90
  91         /**
  92                 Firmware version (x 100).
  93         */
  94         int firmware_version;
  95
  96         /**
  97                 Device ID.
  98         */
  99         int device_id;
 100 };
 101
 102 #define POD_SYSEX_CODE 3
 103 #define POD_BYTES_PER_FRAME 6   /* 24bit audio (stereo) */
 104
 105 /* *INDENT-OFF* */
 106
 107 enum {
 108         POD_SYSEX_SAVE      = 0x24,
 109         POD_SYSEX_SYSTEM    = 0x56,
 110         POD_SYSEX_SYSTEMREQ = 0x57,
 111         /* POD_SYSEX_UPDATE    = 0x6c, */  /* software update! */
 112         POD_SYSEX_STORE     = 0x71,
 113         POD_SYSEX_FINISH    = 0x72,
 114         POD_SYSEX_DUMPMEM   = 0x73,
 115         POD_SYSEX_DUMP      = 0x74,
 116         POD_SYSEX_DUMPREQ   = 0x75
 117
 118         /* dumps entire internal memory of PODxt Pro */
 119         /* POD_SYSEX_DUMPMEM2  = 0x76 */
 120 };
 121
 122 enum {
 123         POD_MONITOR_LEVEL  = 0x04,
 124         POD_SYSTEM_INVALID = 0x10000
 125 };
 126
 127 /* *INDENT-ON* */
 128
 129 enum {
 130         POD_DUMP_MEMORY = 2
 131 };
 132
 133 enum {
 134         POD_BUSY_READ,
 135         POD_BUSY_WRITE,
 136         POD_CHANNEL_DIRTY,
 137         POD_SAVE_PRESSED,
 138         POD_BUSY_MIDISEND
 139 };
 140
 141 static struct snd_ratden pod_ratden = {
 142         .num_min = 78125,
 143         .num_max = 78125,
 144         .num_step = 1,
 145         .den = 2
 146 };
 147
 148 static struct line6_pcm_properties pod_pcm_properties = {
 149         .snd_line6_playback_hw = {
 150                                   .info = (SNDRV_PCM_INFO_MMAP |
 151                                            SNDRV_PCM_INFO_INTERLEAVED |
 152                                            SNDRV_PCM_INFO_BLOCK_TRANSFER |
 153                                            SNDRV_PCM_INFO_MMAP_VALID |
 154                                            SNDRV_PCM_INFO_PAUSE |
 155                                            SNDRV_PCM_INFO_SYNC_START),
 156                                   .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 157                                   .rates = SNDRV_PCM_RATE_KNOT,
 158                                   .rate_min = 39062,
 159                                   .rate_max = 39063,
 160                                   .channels_min = 2,
 161                                   .channels_max = 2,
 162                                   .buffer_bytes_max = 60000,
 163                                   .period_bytes_min = 64,
 164                                   .period_bytes_max = 8192,
 165                                   .periods_min = 1,
 166                                   .periods_max = 1024},
 167         .snd_line6_capture_hw = {
 168                                  .info = (SNDRV_PCM_INFO_MMAP |
 169                                           SNDRV_PCM_INFO_INTERLEAVED |
 170                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
 171                                           SNDRV_PCM_INFO_MMAP_VALID |
 172                                           SNDRV_PCM_INFO_SYNC_START),
 173                                  .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 174                                  .rates = SNDRV_PCM_RATE_KNOT,
 175                                  .rate_min = 39062,
 176                                  .rate_max = 39063,
 177                                  .channels_min = 2,
 178                                  .channels_max = 2,
 179                                  .buffer_bytes_max = 60000,
 180                                  .period_bytes_min = 64,
 181                                  .period_bytes_max = 8192,
 182                                  .periods_min = 1,
 183                                  .periods_max = 1024},
 184         .snd_line6_rates = {
 185                             .nrats = 1,
 186                             .rats = &pod_ratden},
 187         .bytes_per_frame = POD_BYTES_PER_FRAME
 188 };
 189
 190 static const char pod_version_header[] = {
 191         0xf2, 0x7e, 0x7f, 0x06, 0x02
 192 };
 193
 194 /* forward declarations: */
 195 static void pod_startup2(unsigned long data);
 196 static void pod_startup3(struct usb_line6_pod *pod);
 197
 198 static char *pod_alloc_sysex_buffer(struct usb_line6_pod *pod, int code,
 199                                     int size)
 200 {
 201         return line6_alloc_sysex_buffer(&pod->line6, POD_SYSEX_CODE, code,
 202                                         size);
 203 }
 204
 205 /*
 206         Process a completely received message.
 207 */
 208 static void line6_pod_process_message(struct usb_line6 *line6)
 209 {
 210         struct usb_line6_pod *pod = (struct usb_line6_pod *) line6;
 211         const unsigned char *buf = pod->line6.buffer_message;
 212
 213         if (memcmp(buf, pod_version_header, sizeof(pod_version_header)) == 0) {
 214                 pod->firmware_version = buf[13] * 100 + buf[14] * 10 + buf[15];
 215                 pod->device_id = ((int)buf[8] << 16) | ((int)buf[9] << 8) |
 216                                  (int) buf[10];
 217                 pod_startup3(pod);
 218                 return;
 219         }
 220
 221         /* Only look for sysex messages from this device */
 222         if (buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_DEVICE) &&
 223             buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_UNKNOWN)) {
 224                 return;
 225         }
 226         if (memcmp(buf + 1, line6_midi_id, sizeof(line6_midi_id)) != 0)
 227                 return;
 228
 229         if (buf[5] == POD_SYSEX_SYSTEM && buf[6] == POD_MONITOR_LEVEL) {
 230                 short value = ((int)buf[7] << 12) | ((int)buf[8] << 8) |
 231                               ((int)buf[9] << 4) | (int)buf[10];
 232                 pod->monitor_level = value;
 233         }
 234 }
 235
 236 /*
 237         Send system parameter (from integer).
 238 */
 239 static int pod_set_system_param_int(struct usb_line6_pod *pod, int value,
 240                                     int code)
 241 {
 242         char *sysex;
 243         static const int size = 5;
 244
 245         sysex = pod_alloc_sysex_buffer(pod, POD_SYSEX_SYSTEM, size);
 246         if (!sysex)
 247                 return -ENOMEM;
 248         sysex[SYSEX_DATA_OFS] = code;
 249         sysex[SYSEX_DATA_OFS + 1] = (value >> 12) & 0x0f;
 250         sysex[SYSEX_DATA_OFS + 2] = (value >> 8) & 0x0f;
 251         sysex[SYSEX_DATA_OFS + 3] = (value >> 4) & 0x0f;
 252         sysex[SYSEX_DATA_OFS + 4] = (value) & 0x0f;
 253         line6_send_sysex_message(&pod->line6, sysex, size);
 254         kfree(sysex);
 255         return 0;
 256 }
 257
 258 /*
 259         "read" request on "serial_number" special file.
 260 */
 261 static ssize_t serial_number_show(struct device *dev,
 262                                   struct device_attribute *attr, char *buf)
 263 {
 264         struct usb_interface *interface = to_usb_interface(dev);
 265         struct usb_line6_pod *pod = usb_get_intfdata(interface);
 266
 267         return sprintf(buf, "%d\n", pod->serial_number);
 268 }
 269
 270 /*
 271         "read" request on "firmware_version" special file.
 272 */
 273 static ssize_t firmware_version_show(struct device *dev,
 274                                      struct device_attribute *attr, char *buf)
 275 {
 276         struct usb_interface *interface = to_usb_interface(dev);
 277         struct usb_line6_pod *pod = usb_get_intfdata(interface);
 278
 279         return sprintf(buf, "%d.%02d\n", pod->firmware_version / 100,
 280                        pod->firmware_version % 100);
 281 }
 282
 283 /*
 284         "read" request on "device_id" special file.
 285 */
 286 static ssize_t device_id_show(struct device *dev,
 287                               struct device_attribute *attr, char *buf)
 288 {
 289         struct usb_interface *interface = to_usb_interface(dev);
 290         struct usb_line6_pod *pod = usb_get_intfdata(interface);
 291
 292         return sprintf(buf, "%d\n", pod->device_id);
 293 }
 294
 295 /*
 296         POD startup procedure.
 297         This is a sequence of functions with special requirements (e.g., must
 298         not run immediately after initialization, must not run in interrupt
 299         context). After the last one has finished, the device is ready to use.
 300 */
 301
 302 static void pod_startup1(struct usb_line6_pod *pod)
 303 {
 304         CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_INIT);
 305
 306         /* delay startup procedure: */
 307         line6_start_timer(&pod->startup_timer, POD_STARTUP_DELAY, pod_startup2,
 308                           (unsigned long)pod);
 309 }
 310
 311 static void pod_startup2(unsigned long data)
 312 {
 313         struct usb_line6_pod *pod = (struct usb_line6_pod *)data;
 314         struct usb_line6 *line6 = &pod->line6;
 315
 316         CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_VERSIONREQ);
 317
 318         /* request firmware version: */
 319         line6_version_request_async(line6);
 320 }
 321
 322 static void pod_startup3(struct usb_line6_pod *pod)
 323 {
 324         CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_WORKQUEUE);
 325
 326         /* schedule work for global work queue: */
 327         schedule_work(&pod->startup_work);
 328 }
 329
 330 static void pod_startup4(struct work_struct *work)
 331 {
 332         struct usb_line6_pod *pod =
 333             container_of(work, struct usb_line6_pod, startup_work);
 334         struct usb_line6 *line6 = &pod->line6;
 335
 336         CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_SETUP);
 337
 338         /* serial number: */
 339         line6_read_serial_number(&pod->line6, &pod->serial_number);
 340
 341         /* ALSA audio interface: */
 342         snd_card_register(line6->card);
 343 }
 344
 345 /* POD special files: */
 346 static DEVICE_ATTR_RO(device_id);
 347 static DEVICE_ATTR_RO(firmware_version);
 348 static DEVICE_ATTR_RO(serial_number);
 349
 350 /* control info callback */
 351 static int snd_pod_control_monitor_info(struct snd_kcontrol *kcontrol,
 352                                         struct snd_ctl_elem_info *uinfo)
 353 {
 354         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 355         uinfo->count = 1;
 356         uinfo->value.integer.min = 0;
 357         uinfo->value.integer.max = 65535;
 358         return 0;
 359 }
 360
 361 /* control get callback */
 362 static int snd_pod_control_monitor_get(struct snd_kcontrol *kcontrol,
 363                                        struct snd_ctl_elem_value *ucontrol)
 364 {
 365         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 366         struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6;
 367
 368         ucontrol->value.integer.value[0] = pod->monitor_level;
 369         return 0;
 370 }
 371
 372 /* control put callback */
 373 static int snd_pod_control_monitor_put(struct snd_kcontrol *kcontrol,
 374                                        struct snd_ctl_elem_value *ucontrol)
 375 {
 376         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 377         struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6;
 378
 379         if (ucontrol->value.integer.value[0] == pod->monitor_level)
 380                 return 0;
 381
 382         pod->monitor_level = ucontrol->value.integer.value[0];
 383         pod_set_system_param_int(pod, ucontrol->value.integer.value[0],
 384                                  POD_MONITOR_LEVEL);
 385         return 1;
 386 }
 387
 388 /* control definition */
 389 static struct snd_kcontrol_new pod_control_monitor = {
 390         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 391         .name = "Monitor Playback Volume",
 392         .index = 0,
 393         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 394         .info = snd_pod_control_monitor_info,
 395         .get = snd_pod_control_monitor_get,
 396         .put = snd_pod_control_monitor_put
 397 };
 398
 399 /*
 400         POD device disconnected.
 401 */
 402 static void line6_pod_disconnect(struct usb_line6 *line6)
 403 {
 404         struct usb_line6_pod *pod = (struct usb_line6_pod *)line6;
 405         struct device *dev = line6->ifcdev;
 406
 407         /* remove sysfs entries: */
 408         device_remove_file(dev, &dev_attr_device_id);
 409         device_remove_file(dev, &dev_attr_firmware_version);
 410         device_remove_file(dev, &dev_attr_serial_number);
 411
 412         del_timer_sync(&pod->startup_timer);
 413         cancel_work_sync(&pod->startup_work);
 414 }
 415
 416 /*
 417         Create sysfs entries.
 418 */
 419 static int pod_create_files2(struct device *dev)
 420 {
 421         int err;
 422
 423         err = device_create_file(dev, &dev_attr_device_id);
 424         if (err < 0)
 425                 return err;
 426         err = device_create_file(dev, &dev_attr_firmware_version);
 427         if (err < 0)
 428                 return err;
 429         err = device_create_file(dev, &dev_attr_serial_number);
 430         if (err < 0)
 431                 return err;
 432         return 0;
 433 }
 434
 435 /*
 436          Try to init POD device.
 437 */
 438 static int pod_init(struct usb_line6 *line6,
 439                     const struct usb_device_id *id)
 440 {
 441         int err;
 442         struct usb_line6_pod *pod = (struct usb_line6_pod *) line6;
 443
 444         line6->process_message = line6_pod_process_message;
 445         line6->disconnect = line6_pod_disconnect;
 446
 447         init_timer(&pod->startup_timer);
 448         INIT_WORK(&pod->startup_work, pod_startup4);
 449
 450         /* create sysfs entries: */
 451         err = pod_create_files2(line6->ifcdev);
 452         if (err < 0)
 453                 return err;
 454
 455         /* initialize MIDI subsystem: */
 456         err = line6_init_midi(line6);
 457         if (err < 0)
 458                 return err;
 459
 460         /* initialize PCM subsystem: */
 461         err = line6_init_pcm(line6, &pod_pcm_properties);
 462         if (err < 0)
 463                 return err;
 464
 465         /* register monitor control: */
 466         err = snd_ctl_add(line6->card,
 467                           snd_ctl_new1(&pod_control_monitor, line6->line6pcm));
 468         if (err < 0)
 469                 return err;
 470
 471         /*
 472            When the sound card is registered at this point, the PODxt Live
 473            displays "Invalid Code Error 07", so we do it later in the event
 474            handler.
 475          */
 476
 477         if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) {
 478                 pod->monitor_level = POD_SYSTEM_INVALID;
 479
 480                 /* initiate startup procedure: */
 481                 pod_startup1(pod);
 482         }
 483
 484         return 0;
 485 }
 486
 487 #define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
 488 #define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)
 489
 490 /* table of devices that work with this driver */
 491 static const struct usb_device_id pod_id_table[] = {
 492         { LINE6_DEVICE(0x4250),    .driver_info = LINE6_BASSPODXT },
 493         { LINE6_DEVICE(0x4642),    .driver_info = LINE6_BASSPODXTLIVE },
 494         { LINE6_DEVICE(0x4252),    .driver_info = LINE6_BASSPODXTPRO },
 495         { LINE6_IF_NUM(0x5051, 1), .driver_info = LINE6_POCKETPOD },
 496         { LINE6_DEVICE(0x5044),    .driver_info = LINE6_PODXT },
 497         { LINE6_IF_NUM(0x4650, 0), .driver_info = LINE6_PODXTLIVE_POD },
 498         { LINE6_DEVICE(0x5050),    .driver_info = LINE6_PODXTPRO },
 499         {}
 500 };
 501
 502 MODULE_DEVICE_TABLE(usb, pod_id_table);
 503
 504 static const struct line6_properties pod_properties_table[] = {
 505         [LINE6_BASSPODXT] = {
 506                 .id = "BassPODxt",
 507                 .name = "BassPODxt",
 508                 .capabilities   = LINE6_CAP_CONTROL
 509                                 | LINE6_CAP_PCM
 510                                 | LINE6_CAP_HWMON,
 511                 .altsetting = 5,
 512                 .ep_ctrl_r = 0x84,
 513                 .ep_ctrl_w = 0x03,
 514                 .ep_audio_r = 0x82,
 515                 .ep_audio_w = 0x01,
 516         },
 517         [LINE6_BASSPODXTLIVE] = {
 518                 .id = "BassPODxtLive",
 519                 .name = "BassPODxt Live",
 520                 .capabilities   = LINE6_CAP_CONTROL
 521                                 | LINE6_CAP_PCM
 522                                 | LINE6_CAP_HWMON,
 523                 .altsetting = 1,
 524                 .ep_ctrl_r = 0x84,
 525                 .ep_ctrl_w = 0x03,
 526                 .ep_audio_r = 0x82,
 527                 .ep_audio_w = 0x01,
 528         },
 529         [LINE6_BASSPODXTPRO] = {
 530                 .id = "BassPODxtPro",
 531                 .name = "BassPODxt Pro",
 532                 .capabilities   = LINE6_CAP_CONTROL
 533                                 | LINE6_CAP_PCM
 534                                 | LINE6_CAP_HWMON,
 535                 .altsetting = 5,
 536                 .ep_ctrl_r = 0x84,
 537                 .ep_ctrl_w = 0x03,
 538                 .ep_audio_r = 0x82,
 539                 .ep_audio_w = 0x01,
 540         },
 541         [LINE6_POCKETPOD] = {
 542                 .id = "PocketPOD",
 543                 .name = "Pocket POD",
 544                 .capabilities   = LINE6_CAP_CONTROL,
 545                 .altsetting = 0,
 546                 .ep_ctrl_r = 0x82,
 547                 .ep_ctrl_w = 0x02,
 548                 /* no audio channel */
 549         },
 550         [LINE6_PODXT] = {
 551                 .id = "PODxt",
 552                 .name = "PODxt",
 553                 .capabilities   = LINE6_CAP_CONTROL
 554                                 | LINE6_CAP_PCM
 555                                 | LINE6_CAP_HWMON,
 556                 .altsetting = 5,
 557                 .ep_ctrl_r = 0x84,
 558                 .ep_ctrl_w = 0x03,
 559                 .ep_audio_r = 0x82,
 560                 .ep_audio_w = 0x01,
 561         },
 562         [LINE6_PODXTLIVE_POD] = {
 563                 .id = "PODxtLive",
 564                 .name = "PODxt Live",
 565                 .capabilities   = LINE6_CAP_CONTROL
 566                                 | LINE6_CAP_PCM
 567                                 | LINE6_CAP_HWMON,
 568                 .altsetting = 1,
 569                 .ep_ctrl_r = 0x84,
 570                 .ep_ctrl_w = 0x03,
 571                 .ep_audio_r = 0x82,
 572                 .ep_audio_w = 0x01,
 573         },
 574         [LINE6_PODXTPRO] = {
 575                 .id = "PODxtPro",
 576                 .name = "PODxt Pro",
 577                 .capabilities   = LINE6_CAP_CONTROL
 578                                 | LINE6_CAP_PCM
 579                                 | LINE6_CAP_HWMON,
 580                 .altsetting = 5,
 581                 .ep_ctrl_r = 0x84,
 582                 .ep_ctrl_w = 0x03,
 583                 .ep_audio_r = 0x82,
 584                 .ep_audio_w = 0x01,
 585         },
 586 };
 587
 588 /*
 589         Probe USB device.
 590 */
 591 static int pod_probe(struct usb_interface *interface,
 592                      const struct usb_device_id *id)
 593 {
 594         struct usb_line6_pod *pod;
 595
 596         pod = kzalloc(sizeof(*pod), GFP_KERNEL);
 597         if (!pod)
 598                 return -ENODEV;
 599         return line6_probe(interface, id, &pod->line6,
 600                            &pod_properties_table[id->driver_info],
 601                            pod_init);
 602 }
 603
 604 static struct usb_driver pod_driver = {
 605         .name = KBUILD_MODNAME,
 606         .probe = pod_probe,
 607         .disconnect = line6_disconnect,
 608 #ifdef CONFIG_PM
 609         .suspend = line6_suspend,
 610         .resume = line6_resume,
 611         .reset_resume = line6_resume,
 612 #endif
 613         .id_table = pod_id_table,
 614 };
 615
 616 module_usb_driver(pod_driver);
 617
 618 MODULE_DESCRIPTION("Line 6 POD USB driver");
 619 MODULE_LICENSE("GPL");