kernel/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
  25 /*
  26         Locate name in binary program dump
  27 */
  28 #define POD_NAME_OFFSET 0
  29 #define POD_NAME_LENGTH 16
  30
  31 /*
  32         Other constants
  33 */
  34 #define POD_CONTROL_SIZE 0x80
  35 #define POD_BUFSIZE_DUMPREQ 7
  36 #define POD_STARTUP_DELAY 1000
  37
  38 /*
  39         Stages of POD startup procedure
  40 */
  41 enum {
  42         POD_STARTUP_INIT = 1,
  43         POD_STARTUP_VERSIONREQ,
  44         POD_STARTUP_WORKQUEUE,
  45         POD_STARTUP_SETUP,
  46         POD_STARTUP_LAST = POD_STARTUP_SETUP - 1
  47 };
  48
  49 enum {
  50         LINE6_BASSPODXT,
  51         LINE6_BASSPODXTLIVE,
  52         LINE6_BASSPODXTPRO,
  53         LINE6_POCKETPOD,
  54         LINE6_PODXT,
  55         LINE6_PODXTLIVE_POD,
  56         LINE6_PODXTPRO,
  57 };
  58
  59 struct usb_line6_pod {
  60         /* Generic Line 6 USB data */
  61         struct usb_line6 line6;
  62
  63         /* Instrument monitor level */
  64         int monitor_level;
  65
  66         /* Timer for device initialization */
  67         struct timer_list startup_timer;
  68
  69         /* Work handler for device initialization */
  70         struct work_struct startup_work;
  71
  72         /* Current progress in startup procedure */
  73         int startup_progress;
  74
  75         /* Serial number of device */
  76         u32 serial_number;
  77
  78         /* Firmware version (x 100) */
  79         int firmware_version;
  80
  81         /* Device ID */
  82         int device_id;
  83 };
  84
  85 #define POD_SYSEX_CODE 3
  86 #define POD_BYTES_PER_FRAME 6   /* 24bit audio (stereo) */
  87
  88 /* *INDENT-OFF* */
  89
  90 enum {
  91         POD_SYSEX_SAVE      = 0x24,
  92         POD_SYSEX_SYSTEM    = 0x56,
  93         POD_SYSEX_SYSTEMREQ = 0x57,
  94         /* POD_SYSEX_UPDATE    = 0x6c, */  /* software update! */
  95         POD_SYSEX_STORE     = 0x71,
  96         POD_SYSEX_FINISH    = 0x72,
  97         POD_SYSEX_DUMPMEM   = 0x73,
  98         POD_SYSEX_DUMP      = 0x74,
  99         POD_SYSEX_DUMPREQ   = 0x75
 100
 101         /* dumps entire internal memory of PODxt Pro */
 102         /* POD_SYSEX_DUMPMEM2  = 0x76 */
 103 };
 104
 105 enum {
 106         POD_MONITOR_LEVEL  = 0x04,
 107         POD_SYSTEM_INVALID = 0x10000
 108 };
 109
 110 /* *INDENT-ON* */
 111
 112 enum {
 113         POD_DUMP_MEMORY = 2
 114 };
 115
 116 enum {
 117         POD_BUSY_READ,
 118         POD_BUSY_WRITE,
 119         POD_CHANNEL_DIRTY,
 120         POD_SAVE_PRESSED,
 121         POD_BUSY_MIDISEND
 122 };
 123
 124 static struct snd_ratden pod_ratden = {
 125         .num_min = 78125,
 126         .num_max = 78125,
 127         .num_step = 1,
 128         .den = 2
 129 };
 130
 131 static struct line6_pcm_properties pod_pcm_properties = {
 132         .playback_hw = {
 133                                   .info = (SNDRV_PCM_INFO_MMAP |
 134                                            SNDRV_PCM_INFO_INTERLEAVED |
 135                                            SNDRV_PCM_INFO_BLOCK_TRANSFER |
 136                                            SNDRV_PCM_INFO_MMAP_VALID |
 137                                            SNDRV_PCM_INFO_PAUSE |
 138                                            SNDRV_PCM_INFO_SYNC_START),
 139                                   .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 140                                   .rates = SNDRV_PCM_RATE_KNOT,
 141                                   .rate_min = 39062,
 142                                   .rate_max = 39063,
 143                                   .channels_min = 2,
 144                                   .channels_max = 2,
 145                                   .buffer_bytes_max = 60000,
 146                                   .period_bytes_min = 64,
 147                                   .period_bytes_max = 8192,
 148                                   .periods_min = 1,
 149                                   .periods_max = 1024},
 150         .capture_hw = {
 151                                  .info = (SNDRV_PCM_INFO_MMAP |
 152                                           SNDRV_PCM_INFO_INTERLEAVED |
 153                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
 154                                           SNDRV_PCM_INFO_MMAP_VALID |
 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         .rates = {
 168                             .nrats = 1,
 169                             .rats = &pod_ratden},
 170         .bytes_per_frame = POD_BYTES_PER_FRAME
 171 };
 172
 173 static const char pod_version_header[] = {
 174         0xf2, 0x7e, 0x7f, 0x06, 0x02
 175 };
 176
 177 /* forward declarations: */
 178 static void pod_startup2(unsigned long data);
 179 static void pod_startup3(struct usb_line6_pod *pod);
 180
 181 static char *pod_alloc_sysex_buffer(struct usb_line6_pod *pod, int code,
 182                                     int size)
 183 {
 184         return line6_alloc_sysex_buffer(&pod->line6, POD_SYSEX_CODE, code,
 185                                         size);
 186 }
 187
 188 /*
 189         Process a completely received message.
 190 */
 191 static void line6_pod_process_message(struct usb_line6 *line6)
 192 {
 193         struct usb_line6_pod *pod = (struct usb_line6_pod *) line6;
 194         const unsigned char *buf = pod->line6.buffer_message;
 195
 196         if (memcmp(buf, pod_version_header, sizeof(pod_version_header)) == 0) {
 197                 pod->firmware_version = buf[13] * 100 + buf[14] * 10 + buf[15];
 198                 pod->device_id = ((int)buf[8] << 16) | ((int)buf[9] << 8) |
 199                                  (int) buf[10];
 200                 pod_startup3(pod);
 201                 return;
 202         }
 203
 204         /* Only look for sysex messages from this device */
 205         if (buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_DEVICE) &&
 206             buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_UNKNOWN)) {
 207                 return;
 208         }
 209         if (memcmp(buf + 1, line6_midi_id, sizeof(line6_midi_id)) != 0)
 210                 return;
 211
 212         if (buf[5] == POD_SYSEX_SYSTEM && buf[6] == POD_MONITOR_LEVEL) {
 213                 short value = ((int)buf[7] << 12) | ((int)buf[8] << 8) |
 214                               ((int)buf[9] << 4) | (int)buf[10];
 215                 pod->monitor_level = value;
 216         }
 217 }
 218
 219 /*
 220         Send system parameter (from integer).
 221 */
 222 static int pod_set_system_param_int(struct usb_line6_pod *pod, int value,
 223                                     int code)
 224 {
 225         char *sysex;
 226         static const int size = 5;
 227
 228         sysex = pod_alloc_sysex_buffer(pod, POD_SYSEX_SYSTEM, size);
 229         if (!sysex)
 230                 return -ENOMEM;
 231         sysex[SYSEX_DATA_OFS] = code;
 232         sysex[SYSEX_DATA_OFS + 1] = (value >> 12) & 0x0f;
 233         sysex[SYSEX_DATA_OFS + 2] = (value >> 8) & 0x0f;
 234         sysex[SYSEX_DATA_OFS + 3] = (value >> 4) & 0x0f;
 235         sysex[SYSEX_DATA_OFS + 4] = (value) & 0x0f;
 236         line6_send_sysex_message(&pod->line6, sysex, size);
 237         kfree(sysex);
 238         return 0;
 239 }
 240
 241 /*
 242         "read" request on "serial_number" special file.
 243 */
 244 static ssize_t serial_number_show(struct device *dev,
 245                                   struct device_attribute *attr, char *buf)
 246 {
 247         struct usb_interface *interface = to_usb_interface(dev);
 248         struct usb_line6_pod *pod = usb_get_intfdata(interface);
 249
 250         return sprintf(buf, "%u\n", pod->serial_number);
 251 }
 252
 253 /*
 254         "read" request on "firmware_version" special file.
 255 */
 256 static ssize_t firmware_version_show(struct device *dev,
 257                                      struct device_attribute *attr, char *buf)
 258 {
 259         struct usb_interface *interface = to_usb_interface(dev);
 260         struct usb_line6_pod *pod = usb_get_intfdata(interface);
 261
 262         return sprintf(buf, "%d.%02d\n", pod->firmware_version / 100,
 263                        pod->firmware_version % 100);
 264 }
 265
 266 /*
 267         "read" request on "device_id" special file.
 268 */
 269 static ssize_t device_id_show(struct device *dev,
 270                               struct device_attribute *attr, char *buf)
 271 {
 272         struct usb_interface *interface = to_usb_interface(dev);
 273         struct usb_line6_pod *pod = usb_get_intfdata(interface);
 274
 275         return sprintf(buf, "%d\n", pod->device_id);
 276 }
 277
 278 /*
 279         POD startup procedure.
 280         This is a sequence of functions with special requirements (e.g., must
 281         not run immediately after initialization, must not run in interrupt
 282         context). After the last one has finished, the device is ready to use.
 283 */
 284
 285 static void pod_startup1(struct usb_line6_pod *pod)
 286 {
 287         CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_INIT);
 288
 289         /* delay startup procedure: */
 290         line6_start_timer(&pod->startup_timer, POD_STARTUP_DELAY, pod_startup2,
 291                           (unsigned long)pod);
 292 }
 293
 294 static void pod_startup2(unsigned long data)
 295 {
 296         struct usb_line6_pod *pod = (struct usb_line6_pod *)data;
 297         struct usb_line6 *line6 = &pod->line6;
 298
 299         CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_VERSIONREQ);
 300
 301         /* request firmware version: */
 302         line6_version_request_async(line6);
 303 }
 304
 305 static void pod_startup3(struct usb_line6_pod *pod)
 306 {
 307         CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_WORKQUEUE);
 308
 309         /* schedule work for global work queue: */
 310         schedule_work(&pod->startup_work);
 311 }
 312
 313 static void pod_startup4(struct work_struct *work)
 314 {
 315         struct usb_line6_pod *pod =
 316             container_of(work, struct usb_line6_pod, startup_work);
 317         struct usb_line6 *line6 = &pod->line6;
 318
 319         CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_SETUP);
 320
 321         /* serial number: */
 322         line6_read_serial_number(&pod->line6, &pod->serial_number);
 323
 324         /* ALSA audio interface: */
 325         snd_card_register(line6->card);
 326 }
 327
 328 /* POD special files: */
 329 static DEVICE_ATTR_RO(device_id);
 330 static DEVICE_ATTR_RO(firmware_version);
 331 static DEVICE_ATTR_RO(serial_number);
 332
 333 static struct attribute *pod_dev_attrs[] = {
 334         &dev_attr_device_id.attr,
 335         &dev_attr_firmware_version.attr,
 336         &dev_attr_serial_number.attr,
 337         NULL
 338 };
 339
 340 static const struct attribute_group pod_dev_attr_group = {
 341         .name = "pod",
 342         .attrs = pod_dev_attrs,
 343 };
 344
 345 /* control info callback */
 346 static int snd_pod_control_monitor_info(struct snd_kcontrol *kcontrol,
 347                                         struct snd_ctl_elem_info *uinfo)
 348 {
 349         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 350         uinfo->count = 1;
 351         uinfo->value.integer.min = 0;
 352         uinfo->value.integer.max = 65535;
 353         return 0;
 354 }
 355
 356 /* control get callback */
 357 static int snd_pod_control_monitor_get(struct snd_kcontrol *kcontrol,
 358                                        struct snd_ctl_elem_value *ucontrol)
 359 {
 360         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 361         struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6;
 362
 363         ucontrol->value.integer.value[0] = pod->monitor_level;
 364         return 0;
 365 }
 366
 367 /* control put callback */
 368 static int snd_pod_control_monitor_put(struct snd_kcontrol *kcontrol,
 369                                        struct snd_ctl_elem_value *ucontrol)
 370 {
 371         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 372         struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6;
 373
 374         if (ucontrol->value.integer.value[0] == pod->monitor_level)
 375                 return 0;
 376
 377         pod->monitor_level = ucontrol->value.integer.value[0];
 378         pod_set_system_param_int(pod, ucontrol->value.integer.value[0],
 379                                  POD_MONITOR_LEVEL);
 380         return 1;
 381 }
 382
 383 /* control definition */
 384 static struct snd_kcontrol_new pod_control_monitor = {
 385         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 386         .name = "Monitor Playback Volume",
 387         .index = 0,
 388         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 389         .info = snd_pod_control_monitor_info,
 390         .get = snd_pod_control_monitor_get,
 391         .put = snd_pod_control_monitor_put
 392 };
 393
 394 /*
 395         POD device disconnected.
 396 */
 397 static void line6_pod_disconnect(struct usb_line6 *line6)
 398 {
 399         struct usb_line6_pod *pod = (struct usb_line6_pod *)line6;
 400
 401         del_timer_sync(&pod->startup_timer);
 402         cancel_work_sync(&pod->startup_work);
 403 }
 404
 405 /*
 406          Try to init POD device.
 407 */
 408 static int pod_init(struct usb_line6 *line6,
 409                     const struct usb_device_id *id)
 410 {
 411         int err;
 412         struct usb_line6_pod *pod = (struct usb_line6_pod *) line6;
 413
 414         line6->process_message = line6_pod_process_message;
 415         line6->disconnect = line6_pod_disconnect;
 416
 417         init_timer(&pod->startup_timer);
 418         INIT_WORK(&pod->startup_work, pod_startup4);
 419
 420         /* create sysfs entries: */
 421         err = snd_card_add_dev_attr(line6->card, &pod_dev_attr_group);
 422         if (err < 0)
 423                 return err;
 424
 425         /* initialize MIDI subsystem: */
 426         err = line6_init_midi(line6);
 427         if (err < 0)
 428                 return err;
 429
 430         /* initialize PCM subsystem: */
 431         err = line6_init_pcm(line6, &pod_pcm_properties);
 432         if (err < 0)
 433                 return err;
 434
 435         /* register monitor control: */
 436         err = snd_ctl_add(line6->card,
 437                           snd_ctl_new1(&pod_control_monitor, line6->line6pcm));
 438         if (err < 0)
 439                 return err;
 440
 441         /*
 442            When the sound card is registered at this point, the PODxt Live
 443            displays "Invalid Code Error 07", so we do it later in the event
 444            handler.
 445          */
 446
 447         if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) {
 448                 pod->monitor_level = POD_SYSTEM_INVALID;
 449
 450                 /* initiate startup procedure: */
 451                 pod_startup1(pod);
 452         }
 453
 454         return 0;
 455 }
 456
 457 #define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
 458 #define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)
 459
 460 /* table of devices that work with this driver */
 461 static const struct usb_device_id pod_id_table[] = {
 462         { LINE6_DEVICE(0x4250),    .driver_info = LINE6_BASSPODXT },
 463         { LINE6_DEVICE(0x4642),    .driver_info = LINE6_BASSPODXTLIVE },
 464         { LINE6_DEVICE(0x4252),    .driver_info = LINE6_BASSPODXTPRO },
 465         { LINE6_IF_NUM(0x5051, 1), .driver_info = LINE6_POCKETPOD },
 466         { LINE6_DEVICE(0x5044),    .driver_info = LINE6_PODXT },
 467         { LINE6_IF_NUM(0x4650, 0), .driver_info = LINE6_PODXTLIVE_POD },
 468         { LINE6_DEVICE(0x5050),    .driver_info = LINE6_PODXTPRO },
 469         {}
 470 };
 471
 472 MODULE_DEVICE_TABLE(usb, pod_id_table);
 473
 474 static const struct line6_properties pod_properties_table[] = {
 475         [LINE6_BASSPODXT] = {
 476                 .id = "BassPODxt",
 477                 .name = "BassPODxt",
 478                 .capabilities   = LINE6_CAP_CONTROL
 479                                 | LINE6_CAP_PCM
 480                                 | LINE6_CAP_HWMON,
 481                 .altsetting = 5,
 482                 .ep_ctrl_r = 0x84,
 483                 .ep_ctrl_w = 0x03,
 484                 .ep_audio_r = 0x82,
 485                 .ep_audio_w = 0x01,
 486         },
 487         [LINE6_BASSPODXTLIVE] = {
 488                 .id = "BassPODxtLive",
 489                 .name = "BassPODxt Live",
 490                 .capabilities   = LINE6_CAP_CONTROL
 491                                 | LINE6_CAP_PCM
 492                                 | LINE6_CAP_HWMON,
 493                 .altsetting = 1,
 494                 .ep_ctrl_r = 0x84,
 495                 .ep_ctrl_w = 0x03,
 496                 .ep_audio_r = 0x82,
 497                 .ep_audio_w = 0x01,
 498         },
 499         [LINE6_BASSPODXTPRO] = {
 500                 .id = "BassPODxtPro",
 501                 .name = "BassPODxt Pro",
 502                 .capabilities   = LINE6_CAP_CONTROL
 503                                 | LINE6_CAP_PCM
 504                                 | LINE6_CAP_HWMON,
 505                 .altsetting = 5,
 506                 .ep_ctrl_r = 0x84,
 507                 .ep_ctrl_w = 0x03,
 508                 .ep_audio_r = 0x82,
 509                 .ep_audio_w = 0x01,
 510         },
 511         [LINE6_POCKETPOD] = {
 512                 .id = "PocketPOD",
 513                 .name = "Pocket POD",
 514                 .capabilities   = LINE6_CAP_CONTROL,
 515                 .altsetting = 0,
 516                 .ep_ctrl_r = 0x82,
 517                 .ep_ctrl_w = 0x02,
 518                 /* no audio channel */
 519         },
 520         [LINE6_PODXT] = {
 521                 .id = "PODxt",
 522                 .name = "PODxt",
 523                 .capabilities   = LINE6_CAP_CONTROL
 524                                 | LINE6_CAP_PCM
 525                                 | LINE6_CAP_HWMON,
 526                 .altsetting = 5,
 527                 .ep_ctrl_r = 0x84,
 528                 .ep_ctrl_w = 0x03,
 529                 .ep_audio_r = 0x82,
 530                 .ep_audio_w = 0x01,
 531         },
 532         [LINE6_PODXTLIVE_POD] = {
 533                 .id = "PODxtLive",
 534                 .name = "PODxt Live",
 535                 .capabilities   = LINE6_CAP_CONTROL
 536                                 | LINE6_CAP_PCM
 537                                 | LINE6_CAP_HWMON,
 538                 .altsetting = 1,
 539                 .ep_ctrl_r = 0x84,
 540                 .ep_ctrl_w = 0x03,
 541                 .ep_audio_r = 0x82,
 542                 .ep_audio_w = 0x01,
 543         },
 544         [LINE6_PODXTPRO] = {
 545                 .id = "PODxtPro",
 546                 .name = "PODxt Pro",
 547                 .capabilities   = LINE6_CAP_CONTROL
 548                                 | LINE6_CAP_PCM
 549                                 | LINE6_CAP_HWMON,
 550                 .altsetting = 5,
 551                 .ep_ctrl_r = 0x84,
 552                 .ep_ctrl_w = 0x03,
 553                 .ep_audio_r = 0x82,
 554                 .ep_audio_w = 0x01,
 555         },
 556 };
 557
 558 /*
 559         Probe USB device.
 560 */
 561 static int pod_probe(struct usb_interface *interface,
 562                      const struct usb_device_id *id)
 563 {
 564         return line6_probe(interface, id, "Line6-POD",
 565                            &pod_properties_table[id->driver_info],
 566                            pod_init, sizeof(struct usb_line6_pod));
 567 }
 568
 569 static struct usb_driver pod_driver = {
 570         .name = KBUILD_MODNAME,
 571         .probe = pod_probe,
 572         .disconnect = line6_disconnect,
 573 #ifdef CONFIG_PM
 574         .suspend = line6_suspend,
 575         .resume = line6_resume,
 576         .reset_resume = line6_resume,
 577 #endif
 578         .id_table = pod_id_table,
 579 };
 580
 581 module_usb_driver(pod_driver);
 582
 583 MODULE_DESCRIPTION("Line 6 POD USB driver");
 584 MODULE_LICENSE("GPL");