sound/usb/line6/pod.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Line 6 Linux USB driver
   4  *
   5  * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
   6  */
   7
   8 #include <linux/slab.h>
   9 #include <linux/wait.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/module.h>
  12 #include <linux/usb.h>
  13
  14 #include <sound/core.h>
  15 #include <sound/control.h>
  16
  17 #include "capture.h"
  18 #include "driver.h"
  19 #include "playback.h"
  20
  21 /*
  22         Locate name in binary program dump
  23 */
  24 #define POD_NAME_OFFSET 0
  25 #define POD_NAME_LENGTH 16
  26
  27 /*
  28         Other constants
  29 */
  30 #define POD_CONTROL_SIZE 0x80
  31 #define POD_BUFSIZE_DUMPREQ 7
  32 #define POD_STARTUP_DELAY 1000
  33
  34 /*
  35         Stages of POD startup procedure
  36 */
  37 enum {
  38         POD_STARTUP_VERSIONREQ,
  39         POD_STARTUP_SETUP,
  40         POD_STARTUP_DONE,
  41 };
  42
  43 enum {
  44         LINE6_BASSPODXT,
  45         LINE6_BASSPODXTLIVE,
  46         LINE6_BASSPODXTPRO,
  47         LINE6_POCKETPOD,
  48         LINE6_PODXT,
  49         LINE6_PODXTLIVE_POD,
  50         LINE6_PODXTPRO,
  51 };
  52
  53 struct usb_line6_pod {
  54         /* Generic Line 6 USB data */
  55         struct usb_line6 line6;
  56
  57         /* Instrument monitor level */
  58         int monitor_level;
  59
  60         /* Current progress in startup procedure */
  61         int startup_progress;
  62
  63         /* Serial number of device */
  64         u32 serial_number;
  65
  66         /* Firmware version (x 100) */
  67         int firmware_version;
  68
  69         /* Device ID */
  70         int device_id;
  71 };
  72
  73 #define line6_to_pod(x)         container_of(x, struct usb_line6_pod, line6)
  74
  75 #define POD_SYSEX_CODE 3
  76
  77 /* *INDENT-OFF* */
  78
  79 enum {
  80         POD_SYSEX_SAVE      = 0x24,
  81         POD_SYSEX_SYSTEM    = 0x56,
  82         POD_SYSEX_SYSTEMREQ = 0x57,
  83         /* POD_SYSEX_UPDATE    = 0x6c, */  /* software update! */
  84         POD_SYSEX_STORE     = 0x71,
  85         POD_SYSEX_FINISH    = 0x72,
  86         POD_SYSEX_DUMPMEM   = 0x73,
  87         POD_SYSEX_DUMP      = 0x74,
  88         POD_SYSEX_DUMPREQ   = 0x75
  89
  90         /* dumps entire internal memory of PODxt Pro */
  91         /* POD_SYSEX_DUMPMEM2  = 0x76 */
  92 };
  93
  94 enum {
  95         POD_MONITOR_LEVEL  = 0x04,
  96         POD_SYSTEM_INVALID = 0x10000
  97 };
  98
  99 /* *INDENT-ON* */
 100
 101 enum {
 102         POD_DUMP_MEMORY = 2
 103 };
 104
 105 enum {
 106         POD_BUSY_READ,
 107         POD_BUSY_WRITE,
 108         POD_CHANNEL_DIRTY,
 109         POD_SAVE_PRESSED,
 110         POD_BUSY_MIDISEND
 111 };
 112
 113 static const struct snd_ratden pod_ratden = {
 114         .num_min = 78125,
 115         .num_max = 78125,
 116         .num_step = 1,
 117         .den = 2
 118 };
 119
 120 static struct line6_pcm_properties pod_pcm_properties = {
 121         .playback_hw = {
 122                                   .info = (SNDRV_PCM_INFO_MMAP |
 123                                            SNDRV_PCM_INFO_INTERLEAVED |
 124                                            SNDRV_PCM_INFO_BLOCK_TRANSFER |
 125                                            SNDRV_PCM_INFO_MMAP_VALID |
 126                                            SNDRV_PCM_INFO_PAUSE |
 127                                            SNDRV_PCM_INFO_SYNC_START),
 128                                   .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 129                                   .rates = SNDRV_PCM_RATE_KNOT,
 130                                   .rate_min = 39062,
 131                                   .rate_max = 39063,
 132                                   .channels_min = 2,
 133                                   .channels_max = 2,
 134                                   .buffer_bytes_max = 60000,
 135                                   .period_bytes_min = 64,
 136                                   .period_bytes_max = 8192,
 137                                   .periods_min = 1,
 138                                   .periods_max = 1024},
 139         .capture_hw = {
 140                                  .info = (SNDRV_PCM_INFO_MMAP |
 141                                           SNDRV_PCM_INFO_INTERLEAVED |
 142                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
 143                                           SNDRV_PCM_INFO_MMAP_VALID |
 144                                           SNDRV_PCM_INFO_SYNC_START),
 145                                  .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 146                                  .rates = SNDRV_PCM_RATE_KNOT,
 147                                  .rate_min = 39062,
 148                                  .rate_max = 39063,
 149                                  .channels_min = 2,
 150                                  .channels_max = 2,
 151                                  .buffer_bytes_max = 60000,
 152                                  .period_bytes_min = 64,
 153                                  .period_bytes_max = 8192,
 154                                  .periods_min = 1,
 155                                  .periods_max = 1024},
 156         .rates = {
 157                             .nrats = 1,
 158                             .rats = &pod_ratden},
 159         .bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */
 160 };
 161
 162
 163 static const char pod_version_header[] = {
 164         0xf0, 0x7e, 0x7f, 0x06, 0x02
 165 };
 166
 167 static char *pod_alloc_sysex_buffer(struct usb_line6_pod *pod, int code,
 168                                     int size)
 169 {
 170         return line6_alloc_sysex_buffer(&pod->line6, POD_SYSEX_CODE, code,
 171                                         size);
 172 }
 173
 174 /*
 175         Process a completely received message.
 176 */
 177 static void line6_pod_process_message(struct usb_line6 *line6)
 178 {
 179         struct usb_line6_pod *pod = line6_to_pod(line6);
 180         const unsigned char *buf = pod->line6.buffer_message;
 181
 182         if (memcmp(buf, pod_version_header, sizeof(pod_version_header)) == 0) {
 183                 pod->firmware_version = buf[13] * 100 + buf[14] * 10 + buf[15];
 184                 pod->device_id = ((int)buf[8] << 16) | ((int)buf[9] << 8) |
 185                                  (int) buf[10];
 186                 if (pod->startup_progress == POD_STARTUP_VERSIONREQ) {
 187                         pod->startup_progress = POD_STARTUP_SETUP;
 188                         schedule_delayed_work(&line6->startup_work, 0);
 189                 }
 190                 return;
 191         }
 192
 193         /* Only look for sysex messages from this device */
 194         if (buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_DEVICE) &&
 195             buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_UNKNOWN)) {
 196                 return;
 197         }
 198         if (memcmp(buf + 1, line6_midi_id, sizeof(line6_midi_id)) != 0)
 199                 return;
 200
 201         if (buf[5] == POD_SYSEX_SYSTEM && buf[6] == POD_MONITOR_LEVEL) {
 202                 short value = ((int)buf[7] << 12) | ((int)buf[8] << 8) |
 203                               ((int)buf[9] << 4) | (int)buf[10];
 204                 pod->monitor_level = value;
 205         }
 206 }
 207
 208 /*
 209         Send system parameter (from integer).
 210 */
 211 static int pod_set_system_param_int(struct usb_line6_pod *pod, int value,
 212                                     int code)
 213 {
 214         char *sysex;
 215         static const int size = 5;
 216
 217         sysex = pod_alloc_sysex_buffer(pod, POD_SYSEX_SYSTEM, size);
 218         if (!sysex)
 219                 return -ENOMEM;
 220         sysex[SYSEX_DATA_OFS] = code;
 221         sysex[SYSEX_DATA_OFS + 1] = (value >> 12) & 0x0f;
 222         sysex[SYSEX_DATA_OFS + 2] = (value >> 8) & 0x0f;
 223         sysex[SYSEX_DATA_OFS + 3] = (value >> 4) & 0x0f;
 224         sysex[SYSEX_DATA_OFS + 4] = (value) & 0x0f;
 225         line6_send_sysex_message(&pod->line6, sysex, size);
 226         kfree(sysex);
 227         return 0;
 228 }
 229
 230 /*
 231         "read" request on "serial_number" special file.
 232 */
 233 static ssize_t serial_number_show(struct device *dev,
 234                                   struct device_attribute *attr, char *buf)
 235 {
 236         struct snd_card *card = dev_to_snd_card(dev);
 237         struct usb_line6_pod *pod = card->private_data;
 238
 239         return sysfs_emit(buf, "%u\n", pod->serial_number);
 240 }
 241
 242 /*
 243         "read" request on "firmware_version" special file.
 244 */
 245 static ssize_t firmware_version_show(struct device *dev,
 246                                      struct device_attribute *attr, char *buf)
 247 {
 248         struct snd_card *card = dev_to_snd_card(dev);
 249         struct usb_line6_pod *pod = card->private_data;
 250
 251         return sysfs_emit(buf, "%d.%02d\n", pod->firmware_version / 100,
 252                           pod->firmware_version % 100);
 253 }
 254
 255 /*
 256         "read" request on "device_id" special file.
 257 */
 258 static ssize_t device_id_show(struct device *dev,
 259                               struct device_attribute *attr, char *buf)
 260 {
 261         struct snd_card *card = dev_to_snd_card(dev);
 262         struct usb_line6_pod *pod = card->private_data;
 263
 264         return sysfs_emit(buf, "%d\n", pod->device_id);
 265 }
 266
 267 /*
 268         POD startup procedure.
 269         This is a sequence of functions with special requirements (e.g., must
 270         not run immediately after initialization, must not run in interrupt
 271         context). After the last one has finished, the device is ready to use.
 272 */
 273
 274 static void pod_startup(struct usb_line6 *line6)
 275 {
 276         struct usb_line6_pod *pod = line6_to_pod(line6);
 277
 278         switch (pod->startup_progress) {
 279         case POD_STARTUP_VERSIONREQ:
 280                 /* request firmware version: */
 281                 line6_version_request_async(line6);
 282                 break;
 283         case POD_STARTUP_SETUP:
 284                 /* serial number: */
 285                 line6_read_serial_number(&pod->line6, &pod->serial_number);
 286
 287                 /* ALSA audio interface: */
 288                 if (snd_card_register(line6->card))
 289                         dev_err(line6->ifcdev, "Failed to register POD card.\n");
 290                 pod->startup_progress = POD_STARTUP_DONE;
 291                 break;
 292         default:
 293                 break;
 294         }
 295 }
 296
 297 /* POD special files: */
 298 static DEVICE_ATTR_RO(device_id);
 299 static DEVICE_ATTR_RO(firmware_version);
 300 static DEVICE_ATTR_RO(serial_number);
 301
 302 static struct attribute *pod_dev_attrs[] = {
 303         &dev_attr_device_id.attr,
 304         &dev_attr_firmware_version.attr,
 305         &dev_attr_serial_number.attr,
 306         NULL
 307 };
 308
 309 static const struct attribute_group pod_dev_attr_group = {
 310         .name = "pod",
 311         .attrs = pod_dev_attrs,
 312 };
 313
 314 /* control info callback */
 315 static int snd_pod_control_monitor_info(struct snd_kcontrol *kcontrol,
 316                                         struct snd_ctl_elem_info *uinfo)
 317 {
 318         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 319         uinfo->count = 1;
 320         uinfo->value.integer.min = 0;
 321         uinfo->value.integer.max = 65535;
 322         return 0;
 323 }
 324
 325 /* control get callback */
 326 static int snd_pod_control_monitor_get(struct snd_kcontrol *kcontrol,
 327                                        struct snd_ctl_elem_value *ucontrol)
 328 {
 329         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 330         struct usb_line6_pod *pod = line6_to_pod(line6pcm->line6);
 331
 332         ucontrol->value.integer.value[0] = pod->monitor_level;
 333         return 0;
 334 }
 335
 336 /* control put callback */
 337 static int snd_pod_control_monitor_put(struct snd_kcontrol *kcontrol,
 338                                        struct snd_ctl_elem_value *ucontrol)
 339 {
 340         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 341         struct usb_line6_pod *pod = line6_to_pod(line6pcm->line6);
 342
 343         if (ucontrol->value.integer.value[0] == pod->monitor_level)
 344                 return 0;
 345
 346         pod->monitor_level = ucontrol->value.integer.value[0];
 347         pod_set_system_param_int(pod, ucontrol->value.integer.value[0],
 348                                  POD_MONITOR_LEVEL);
 349         return 1;
 350 }
 351
 352 /* control definition */
 353 static const struct snd_kcontrol_new pod_control_monitor = {
 354         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 355         .name = "Monitor Playback Volume",
 356         .index = 0,
 357         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 358         .info = snd_pod_control_monitor_info,
 359         .get = snd_pod_control_monitor_get,
 360         .put = snd_pod_control_monitor_put
 361 };
 362
 363 /*
 364          Try to init POD device.
 365 */
 366 static int pod_init(struct usb_line6 *line6,
 367                     const struct usb_device_id *id)
 368 {
 369         int err;
 370         struct usb_line6_pod *pod = line6_to_pod(line6);
 371
 372         line6->process_message = line6_pod_process_message;
 373         line6->startup = pod_startup;
 374
 375         /* create sysfs entries: */
 376         err = snd_card_add_dev_attr(line6->card, &pod_dev_attr_group);
 377         if (err < 0)
 378                 return err;
 379
 380         /* initialize PCM subsystem: */
 381         err = line6_init_pcm(line6, &pod_pcm_properties);
 382         if (err < 0)
 383                 return err;
 384
 385         /* register monitor control: */
 386         err = snd_ctl_add(line6->card,
 387                           snd_ctl_new1(&pod_control_monitor, line6->line6pcm));
 388         if (err < 0)
 389                 return err;
 390
 391         /*
 392            When the sound card is registered at this point, the PODxt Live
 393            displays "Invalid Code Error 07", so we do it later in the event
 394            handler.
 395          */
 396
 397         if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) {
 398                 pod->monitor_level = POD_SYSTEM_INVALID;
 399
 400                 /* initiate startup procedure: */
 401                 schedule_delayed_work(&line6->startup_work,
 402                                       msecs_to_jiffies(POD_STARTUP_DELAY));
 403         }
 404
 405         return 0;
 406 }
 407
 408 #define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
 409 #define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)
 410
 411 /* table of devices that work with this driver */
 412 static const struct usb_device_id pod_id_table[] = {
 413         { LINE6_DEVICE(0x4250),    .driver_info = LINE6_BASSPODXT },
 414         { LINE6_DEVICE(0x4642),    .driver_info = LINE6_BASSPODXTLIVE },
 415         { LINE6_DEVICE(0x4252),    .driver_info = LINE6_BASSPODXTPRO },
 416         { LINE6_IF_NUM(0x5051, 1), .driver_info = LINE6_POCKETPOD },
 417         { LINE6_DEVICE(0x5044),    .driver_info = LINE6_PODXT },
 418         { LINE6_IF_NUM(0x4650, 0), .driver_info = LINE6_PODXTLIVE_POD },
 419         { LINE6_DEVICE(0x5050),    .driver_info = LINE6_PODXTPRO },
 420         {}
 421 };
 422
 423 MODULE_DEVICE_TABLE(usb, pod_id_table);
 424
 425 static const struct line6_properties pod_properties_table[] = {
 426         [LINE6_BASSPODXT] = {
 427                 .id = "BassPODxt",
 428                 .name = "BassPODxt",
 429                 .capabilities   = LINE6_CAP_CONTROL
 430                                 | LINE6_CAP_CONTROL_MIDI
 431                                 | LINE6_CAP_PCM
 432                                 | LINE6_CAP_HWMON,
 433                 .altsetting = 5,
 434                 .ep_ctrl_r = 0x84,
 435                 .ep_ctrl_w = 0x03,
 436                 .ep_audio_r = 0x82,
 437                 .ep_audio_w = 0x01,
 438         },
 439         [LINE6_BASSPODXTLIVE] = {
 440                 .id = "BassPODxtLive",
 441                 .name = "BassPODxt Live",
 442                 .capabilities   = LINE6_CAP_CONTROL
 443                                 | LINE6_CAP_CONTROL_MIDI
 444                                 | LINE6_CAP_PCM
 445                                 | LINE6_CAP_HWMON,
 446                 .altsetting = 1,
 447                 .ep_ctrl_r = 0x84,
 448                 .ep_ctrl_w = 0x03,
 449                 .ep_audio_r = 0x82,
 450                 .ep_audio_w = 0x01,
 451         },
 452         [LINE6_BASSPODXTPRO] = {
 453                 .id = "BassPODxtPro",
 454                 .name = "BassPODxt Pro",
 455                 .capabilities   = LINE6_CAP_CONTROL
 456                                 | LINE6_CAP_CONTROL_MIDI
 457                                 | LINE6_CAP_PCM
 458                                 | LINE6_CAP_HWMON,
 459                 .altsetting = 5,
 460                 .ep_ctrl_r = 0x84,
 461                 .ep_ctrl_w = 0x03,
 462                 .ep_audio_r = 0x82,
 463                 .ep_audio_w = 0x01,
 464         },
 465         [LINE6_POCKETPOD] = {
 466                 .id = "PocketPOD",
 467                 .name = "Pocket POD",
 468                 .capabilities   = LINE6_CAP_CONTROL
 469                                 | LINE6_CAP_CONTROL_MIDI,
 470                 .altsetting = 0,
 471                 .ep_ctrl_r = 0x82,
 472                 .ep_ctrl_w = 0x02,
 473                 /* no audio channel */
 474         },
 475         [LINE6_PODXT] = {
 476                 .id = "PODxt",
 477                 .name = "PODxt",
 478                 .capabilities   = LINE6_CAP_CONTROL
 479                                 | LINE6_CAP_CONTROL_MIDI
 480                                 | LINE6_CAP_PCM
 481                                 | LINE6_CAP_HWMON,
 482                 .altsetting = 5,
 483                 .ep_ctrl_r = 0x84,
 484                 .ep_ctrl_w = 0x03,
 485                 .ep_audio_r = 0x82,
 486                 .ep_audio_w = 0x01,
 487         },
 488         [LINE6_PODXTLIVE_POD] = {
 489                 .id = "PODxtLive",
 490                 .name = "PODxt Live",
 491                 .capabilities   = LINE6_CAP_CONTROL
 492                                 | LINE6_CAP_CONTROL_MIDI
 493                                 | LINE6_CAP_PCM
 494                                 | LINE6_CAP_HWMON,
 495                 .altsetting = 1,
 496                 .ep_ctrl_r = 0x84,
 497                 .ep_ctrl_w = 0x03,
 498                 .ep_audio_r = 0x82,
 499                 .ep_audio_w = 0x01,
 500         },
 501         [LINE6_PODXTPRO] = {
 502                 .id = "PODxtPro",
 503                 .name = "PODxt Pro",
 504                 .capabilities   = LINE6_CAP_CONTROL
 505                                 | LINE6_CAP_CONTROL_MIDI
 506                                 | LINE6_CAP_PCM
 507                                 | LINE6_CAP_HWMON,
 508                 .altsetting = 5,
 509                 .ep_ctrl_r = 0x84,
 510                 .ep_ctrl_w = 0x03,
 511                 .ep_audio_r = 0x82,
 512                 .ep_audio_w = 0x01,
 513         },
 514 };
 515
 516 /*
 517         Probe USB device.
 518 */
 519 static int pod_probe(struct usb_interface *interface,
 520                      const struct usb_device_id *id)
 521 {
 522         return line6_probe(interface, id, "Line6-POD",
 523                            &pod_properties_table[id->driver_info],
 524                            pod_init, sizeof(struct usb_line6_pod));
 525 }
 526
 527 static struct usb_driver pod_driver = {
 528         .name = KBUILD_MODNAME,
 529         .probe = pod_probe,
 530         .disconnect = line6_disconnect,
 531 #ifdef CONFIG_PM
 532         .suspend = line6_suspend,
 533         .resume = line6_resume,
 534         .reset_resume = line6_resume,
 535 #endif
 536         .id_table = pod_id_table,
 537 };
 538
 539 module_usb_driver(pod_driver);
 540
 541 MODULE_DESCRIPTION("Line 6 POD USB driver");
 542 MODULE_LICENSE("GPL");