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 87 /* *INDENT-OFF* */ 88 89 enum { 90 POD_SYSEX_SAVE = 0x24, 91 POD_SYSEX_SYSTEM = 0x56, 92 POD_SYSEX_SYSTEMREQ = 0x57, 93 /* POD_SYSEX_UPDATE = 0x6c, */ /* software update! */ 94 POD_SYSEX_STORE = 0x71, 95 POD_SYSEX_FINISH = 0x72, 96 POD_SYSEX_DUMPMEM = 0x73, 97 POD_SYSEX_DUMP = 0x74, 98 POD_SYSEX_DUMPREQ = 0x75 99 100 /* dumps entire internal memory of PODxt Pro */ 101 /* POD_SYSEX_DUMPMEM2 = 0x76 */ 102 }; 103 104 enum { 105 POD_MONITOR_LEVEL = 0x04, 106 POD_SYSTEM_INVALID = 0x10000 107 }; 108 109 /* *INDENT-ON* */ 110 111 enum { 112 POD_DUMP_MEMORY = 2 113 }; 114 115 enum { 116 POD_BUSY_READ, 117 POD_BUSY_WRITE, 118 POD_CHANNEL_DIRTY, 119 POD_SAVE_PRESSED, 120 POD_BUSY_MIDISEND 121 }; 122 123 static struct snd_ratden pod_ratden = { 124 .num_min = 78125, 125 .num_max = 78125, 126 .num_step = 1, 127 .den = 2 128 }; 129 130 static struct line6_pcm_properties pod_pcm_properties = { 131 .playback_hw = { 132 .info = (SNDRV_PCM_INFO_MMAP | 133 SNDRV_PCM_INFO_INTERLEAVED | 134 SNDRV_PCM_INFO_BLOCK_TRANSFER | 135 SNDRV_PCM_INFO_MMAP_VALID | 136 SNDRV_PCM_INFO_PAUSE | 137 SNDRV_PCM_INFO_SYNC_START), 138 .formats = SNDRV_PCM_FMTBIT_S24_3LE, 139 .rates = SNDRV_PCM_RATE_KNOT, 140 .rate_min = 39062, 141 .rate_max = 39063, 142 .channels_min = 2, 143 .channels_max = 2, 144 .buffer_bytes_max = 60000, 145 .period_bytes_min = 64, 146 .period_bytes_max = 8192, 147 .periods_min = 1, 148 .periods_max = 1024}, 149 .capture_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_SYNC_START), 155 .formats = SNDRV_PCM_FMTBIT_S24_3LE, 156 .rates = SNDRV_PCM_RATE_KNOT, 157 .rate_min = 39062, 158 .rate_max = 39063, 159 .channels_min = 2, 160 .channels_max = 2, 161 .buffer_bytes_max = 60000, 162 .period_bytes_min = 64, 163 .period_bytes_max = 8192, 164 .periods_min = 1, 165 .periods_max = 1024}, 166 .rates = { 167 .nrats = 1, 168 .rats = &pod_ratden}, 169 .bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */ 170 }; 171 172 static const char pod_version_header[] = { 173 0xf2, 0x7e, 0x7f, 0x06, 0x02 174 }; 175 176 /* forward declarations: */ 177 static void pod_startup2(unsigned long data); 178 static void pod_startup3(struct usb_line6_pod *pod); 179 180 static char *pod_alloc_sysex_buffer(struct usb_line6_pod *pod, int code, 181 int size) 182 { 183 return line6_alloc_sysex_buffer(&pod->line6, POD_SYSEX_CODE, code, 184 size); 185 } 186 187 /* 188 Process a completely received message. 189 */ 190 static void line6_pod_process_message(struct usb_line6 *line6) 191 { 192 struct usb_line6_pod *pod = (struct usb_line6_pod *) line6; 193 const unsigned char *buf = pod->line6.buffer_message; 194 195 if (memcmp(buf, pod_version_header, sizeof(pod_version_header)) == 0) { 196 pod->firmware_version = buf[13] * 100 + buf[14] * 10 + buf[15]; 197 pod->device_id = ((int)buf[8] << 16) | ((int)buf[9] << 8) | 198 (int) buf[10]; 199 pod_startup3(pod); 200 return; 201 } 202 203 /* Only look for sysex messages from this device */ 204 if (buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_DEVICE) && 205 buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_UNKNOWN)) { 206 return; 207 } 208 if (memcmp(buf + 1, line6_midi_id, sizeof(line6_midi_id)) != 0) 209 return; 210 211 if (buf[5] == POD_SYSEX_SYSTEM && buf[6] == POD_MONITOR_LEVEL) { 212 short value = ((int)buf[7] << 12) | ((int)buf[8] << 8) | 213 ((int)buf[9] << 4) | (int)buf[10]; 214 pod->monitor_level = value; 215 } 216 } 217 218 /* 219 Send system parameter (from integer). 220 */ 221 static int pod_set_system_param_int(struct usb_line6_pod *pod, int value, 222 int code) 223 { 224 char *sysex; 225 static const int size = 5; 226 227 sysex = pod_alloc_sysex_buffer(pod, POD_SYSEX_SYSTEM, size); 228 if (!sysex) 229 return -ENOMEM; 230 sysex[SYSEX_DATA_OFS] = code; 231 sysex[SYSEX_DATA_OFS + 1] = (value >> 12) & 0x0f; 232 sysex[SYSEX_DATA_OFS + 2] = (value >> 8) & 0x0f; 233 sysex[SYSEX_DATA_OFS + 3] = (value >> 4) & 0x0f; 234 sysex[SYSEX_DATA_OFS + 4] = (value) & 0x0f; 235 line6_send_sysex_message(&pod->line6, sysex, size); 236 kfree(sysex); 237 return 0; 238 } 239 240 /* 241 "read" request on "serial_number" special file. 242 */ 243 static ssize_t serial_number_show(struct device *dev, 244 struct device_attribute *attr, char *buf) 245 { 246 struct snd_card *card = dev_to_snd_card(dev); 247 struct usb_line6_pod *pod = card->private_data; 248 249 return sprintf(buf, "%u\n", pod->serial_number); 250 } 251 252 /* 253 "read" request on "firmware_version" special file. 254 */ 255 static ssize_t firmware_version_show(struct device *dev, 256 struct device_attribute *attr, char *buf) 257 { 258 struct snd_card *card = dev_to_snd_card(dev); 259 struct usb_line6_pod *pod = card->private_data; 260 261 return sprintf(buf, "%d.%02d\n", pod->firmware_version / 100, 262 pod->firmware_version % 100); 263 } 264 265 /* 266 "read" request on "device_id" special file. 267 */ 268 static ssize_t device_id_show(struct device *dev, 269 struct device_attribute *attr, char *buf) 270 { 271 struct snd_card *card = dev_to_snd_card(dev); 272 struct usb_line6_pod *pod = card->private_data; 273 274 return sprintf(buf, "%d\n", pod->device_id); 275 } 276 277 /* 278 POD startup procedure. 279 This is a sequence of functions with special requirements (e.g., must 280 not run immediately after initialization, must not run in interrupt 281 context). After the last one has finished, the device is ready to use. 282 */ 283 284 static void pod_startup1(struct usb_line6_pod *pod) 285 { 286 CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_INIT); 287 288 /* delay startup procedure: */ 289 line6_start_timer(&pod->startup_timer, POD_STARTUP_DELAY, pod_startup2, 290 (unsigned long)pod); 291 } 292 293 static void pod_startup2(unsigned long data) 294 { 295 struct usb_line6_pod *pod = (struct usb_line6_pod *)data; 296 struct usb_line6 *line6 = &pod->line6; 297 298 CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_VERSIONREQ); 299 300 /* request firmware version: */ 301 line6_version_request_async(line6); 302 } 303 304 static void pod_startup3(struct usb_line6_pod *pod) 305 { 306 CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_WORKQUEUE); 307 308 /* schedule work for global work queue: */ 309 schedule_work(&pod->startup_work); 310 } 311 312 static void pod_startup4(struct work_struct *work) 313 { 314 struct usb_line6_pod *pod = 315 container_of(work, struct usb_line6_pod, startup_work); 316 struct usb_line6 *line6 = &pod->line6; 317 318 CHECK_STARTUP_PROGRESS(pod->startup_progress, POD_STARTUP_SETUP); 319 320 /* serial number: */ 321 line6_read_serial_number(&pod->line6, &pod->serial_number); 322 323 /* ALSA audio interface: */ 324 snd_card_register(line6->card); 325 } 326 327 /* POD special files: */ 328 static DEVICE_ATTR_RO(device_id); 329 static DEVICE_ATTR_RO(firmware_version); 330 static DEVICE_ATTR_RO(serial_number); 331 332 static struct attribute *pod_dev_attrs[] = { 333 &dev_attr_device_id.attr, 334 &dev_attr_firmware_version.attr, 335 &dev_attr_serial_number.attr, 336 NULL 337 }; 338 339 static const struct attribute_group pod_dev_attr_group = { 340 .name = "pod", 341 .attrs = pod_dev_attrs, 342 }; 343 344 /* control info callback */ 345 static int snd_pod_control_monitor_info(struct snd_kcontrol *kcontrol, 346 struct snd_ctl_elem_info *uinfo) 347 { 348 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 349 uinfo->count = 1; 350 uinfo->value.integer.min = 0; 351 uinfo->value.integer.max = 65535; 352 return 0; 353 } 354 355 /* control get callback */ 356 static int snd_pod_control_monitor_get(struct snd_kcontrol *kcontrol, 357 struct snd_ctl_elem_value *ucontrol) 358 { 359 struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); 360 struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6; 361 362 ucontrol->value.integer.value[0] = pod->monitor_level; 363 return 0; 364 } 365 366 /* control put callback */ 367 static int snd_pod_control_monitor_put(struct snd_kcontrol *kcontrol, 368 struct snd_ctl_elem_value *ucontrol) 369 { 370 struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); 371 struct usb_line6_pod *pod = (struct usb_line6_pod *)line6pcm->line6; 372 373 if (ucontrol->value.integer.value[0] == pod->monitor_level) 374 return 0; 375 376 pod->monitor_level = ucontrol->value.integer.value[0]; 377 pod_set_system_param_int(pod, ucontrol->value.integer.value[0], 378 POD_MONITOR_LEVEL); 379 return 1; 380 } 381 382 /* control definition */ 383 static struct snd_kcontrol_new pod_control_monitor = { 384 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 385 .name = "Monitor Playback Volume", 386 .index = 0, 387 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 388 .info = snd_pod_control_monitor_info, 389 .get = snd_pod_control_monitor_get, 390 .put = snd_pod_control_monitor_put 391 }; 392 393 /* 394 POD device disconnected. 395 */ 396 static void line6_pod_disconnect(struct usb_line6 *line6) 397 { 398 struct usb_line6_pod *pod = (struct usb_line6_pod *)line6; 399 400 del_timer_sync(&pod->startup_timer); 401 cancel_work_sync(&pod->startup_work); 402 } 403 404 /* 405 Try to init POD device. 406 */ 407 static int pod_init(struct usb_line6 *line6, 408 const struct usb_device_id *id) 409 { 410 int err; 411 struct usb_line6_pod *pod = (struct usb_line6_pod *) line6; 412 413 line6->process_message = line6_pod_process_message; 414 line6->disconnect = line6_pod_disconnect; 415 416 init_timer(&pod->startup_timer); 417 INIT_WORK(&pod->startup_work, pod_startup4); 418 419 /* create sysfs entries: */ 420 err = snd_card_add_dev_attr(line6->card, &pod_dev_attr_group); 421 if (err < 0) 422 return err; 423 424 /* initialize MIDI subsystem: */ 425 err = line6_init_midi(line6); 426 if (err < 0) 427 return err; 428 429 /* initialize PCM subsystem: */ 430 err = line6_init_pcm(line6, &pod_pcm_properties); 431 if (err < 0) 432 return err; 433 434 /* register monitor control: */ 435 err = snd_ctl_add(line6->card, 436 snd_ctl_new1(&pod_control_monitor, line6->line6pcm)); 437 if (err < 0) 438 return err; 439 440 /* 441 When the sound card is registered at this point, the PODxt Live 442 displays "Invalid Code Error 07", so we do it later in the event 443 handler. 444 */ 445 446 if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) { 447 pod->monitor_level = POD_SYSTEM_INVALID; 448 449 /* initiate startup procedure: */ 450 pod_startup1(pod); 451 } 452 453 return 0; 454 } 455 456 #define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod) 457 #define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n) 458 459 /* table of devices that work with this driver */ 460 static const struct usb_device_id pod_id_table[] = { 461 { LINE6_DEVICE(0x4250), .driver_info = LINE6_BASSPODXT }, 462 { LINE6_DEVICE(0x4642), .driver_info = LINE6_BASSPODXTLIVE }, 463 { LINE6_DEVICE(0x4252), .driver_info = LINE6_BASSPODXTPRO }, 464 { LINE6_IF_NUM(0x5051, 1), .driver_info = LINE6_POCKETPOD }, 465 { LINE6_DEVICE(0x5044), .driver_info = LINE6_PODXT }, 466 { LINE6_IF_NUM(0x4650, 0), .driver_info = LINE6_PODXTLIVE_POD }, 467 { LINE6_DEVICE(0x5050), .driver_info = LINE6_PODXTPRO }, 468 {} 469 }; 470 471 MODULE_DEVICE_TABLE(usb, pod_id_table); 472 473 static const struct line6_properties pod_properties_table[] = { 474 [LINE6_BASSPODXT] = { 475 .id = "BassPODxt", 476 .name = "BassPODxt", 477 .capabilities = LINE6_CAP_CONTROL 478 | LINE6_CAP_PCM 479 | LINE6_CAP_HWMON, 480 .altsetting = 5, 481 .ep_ctrl_r = 0x84, 482 .ep_ctrl_w = 0x03, 483 .ep_audio_r = 0x82, 484 .ep_audio_w = 0x01, 485 }, 486 [LINE6_BASSPODXTLIVE] = { 487 .id = "BassPODxtLive", 488 .name = "BassPODxt Live", 489 .capabilities = LINE6_CAP_CONTROL 490 | LINE6_CAP_PCM 491 | LINE6_CAP_HWMON, 492 .altsetting = 1, 493 .ep_ctrl_r = 0x84, 494 .ep_ctrl_w = 0x03, 495 .ep_audio_r = 0x82, 496 .ep_audio_w = 0x01, 497 }, 498 [LINE6_BASSPODXTPRO] = { 499 .id = "BassPODxtPro", 500 .name = "BassPODxt Pro", 501 .capabilities = LINE6_CAP_CONTROL 502 | LINE6_CAP_PCM 503 | LINE6_CAP_HWMON, 504 .altsetting = 5, 505 .ep_ctrl_r = 0x84, 506 .ep_ctrl_w = 0x03, 507 .ep_audio_r = 0x82, 508 .ep_audio_w = 0x01, 509 }, 510 [LINE6_POCKETPOD] = { 511 .id = "PocketPOD", 512 .name = "Pocket POD", 513 .capabilities = LINE6_CAP_CONTROL, 514 .altsetting = 0, 515 .ep_ctrl_r = 0x82, 516 .ep_ctrl_w = 0x02, 517 /* no audio channel */ 518 }, 519 [LINE6_PODXT] = { 520 .id = "PODxt", 521 .name = "PODxt", 522 .capabilities = LINE6_CAP_CONTROL 523 | LINE6_CAP_PCM 524 | LINE6_CAP_HWMON, 525 .altsetting = 5, 526 .ep_ctrl_r = 0x84, 527 .ep_ctrl_w = 0x03, 528 .ep_audio_r = 0x82, 529 .ep_audio_w = 0x01, 530 }, 531 [LINE6_PODXTLIVE_POD] = { 532 .id = "PODxtLive", 533 .name = "PODxt Live", 534 .capabilities = LINE6_CAP_CONTROL 535 | LINE6_CAP_PCM 536 | LINE6_CAP_HWMON, 537 .altsetting = 1, 538 .ep_ctrl_r = 0x84, 539 .ep_ctrl_w = 0x03, 540 .ep_audio_r = 0x82, 541 .ep_audio_w = 0x01, 542 }, 543 [LINE6_PODXTPRO] = { 544 .id = "PODxtPro", 545 .name = "PODxt Pro", 546 .capabilities = LINE6_CAP_CONTROL 547 | LINE6_CAP_PCM 548 | LINE6_CAP_HWMON, 549 .altsetting = 5, 550 .ep_ctrl_r = 0x84, 551 .ep_ctrl_w = 0x03, 552 .ep_audio_r = 0x82, 553 .ep_audio_w = 0x01, 554 }, 555 }; 556 557 /* 558 Probe USB device. 559 */ 560 static int pod_probe(struct usb_interface *interface, 561 const struct usb_device_id *id) 562 { 563 return line6_probe(interface, id, "Line6-POD", 564 &pod_properties_table[id->driver_info], 565 pod_init, sizeof(struct usb_line6_pod)); 566 } 567 568 static struct usb_driver pod_driver = { 569 .name = KBUILD_MODNAME, 570 .probe = pod_probe, 571 .disconnect = line6_disconnect, 572 #ifdef CONFIG_PM 573 .suspend = line6_suspend, 574 .resume = line6_resume, 575 .reset_resume = line6_resume, 576 #endif 577 .id_table = pod_id_table, 578 }; 579 580 module_usb_driver(pod_driver); 581 582 MODULE_DESCRIPTION("Line 6 POD USB driver"); 583 MODULE_LICENSE("GPL"); 584