sound/usb/line6/podhd.c

   1 /*
   2  * Line 6 Pod HD
   3  *
   4  * Copyright (C) 2011 Stefan Hajnoczi <stefanha@gmail.com>
   5  * Copyright (C) 2015 Andrej Krutak <dev@andree.sk>
   6  * Copyright (C) 2017 Hans P. Moller <hmoller@uc.cl>
   7  *
   8  *      This program is free software; you can redistribute it and/or
   9  *      modify it under the terms of the GNU General Public License as
  10  *      published by the Free Software Foundation, version 2.
  11  *
  12  */
  13
  14 #include <linux/usb.h>
  15 #include <linux/slab.h>
  16 #include <linux/module.h>
  17 #include <sound/core.h>
  18 #include <sound/pcm.h>
  19
  20 #include "driver.h"
  21 #include "pcm.h"
  22
  23 #define PODHD_STARTUP_DELAY 500
  24
  25 /*
  26  * Stages of POD startup procedure
  27  */
  28 enum {
  29         PODHD_STARTUP_INIT = 1,
  30         PODHD_STARTUP_SCHEDULE_WORKQUEUE,
  31         PODHD_STARTUP_SETUP,
  32         PODHD_STARTUP_LAST = PODHD_STARTUP_SETUP - 1
  33 };
  34
  35 enum {
  36         LINE6_PODHD300,
  37         LINE6_PODHD400,
  38         LINE6_PODHD500_0,
  39         LINE6_PODHD500_1,
  40         LINE6_PODX3,
  41         LINE6_PODX3LIVE,
  42         LINE6_PODHD500X
  43 };
  44
  45 struct usb_line6_podhd {
  46         /* Generic Line 6 USB data */
  47         struct usb_line6 line6;
  48
  49         /* Timer for device initialization */
  50         struct timer_list startup_timer;
  51
  52         /* Work handler for device initialization */
  53         struct work_struct startup_work;
  54
  55         /* Current progress in startup procedure */
  56         int startup_progress;
  57
  58         /* Serial number of device */
  59         u32 serial_number;
  60
  61         /* Firmware version */
  62         int firmware_version;
  63 };
  64
  65 static struct snd_ratden podhd_ratden = {
  66         .num_min = 48000,
  67         .num_max = 48000,
  68         .num_step = 1,
  69         .den = 1,
  70 };
  71
  72 static struct line6_pcm_properties podhd_pcm_properties = {
  73         .playback_hw = {
  74                                   .info = (SNDRV_PCM_INFO_MMAP |
  75                                            SNDRV_PCM_INFO_INTERLEAVED |
  76                                            SNDRV_PCM_INFO_BLOCK_TRANSFER |
  77                                            SNDRV_PCM_INFO_MMAP_VALID |
  78                                            SNDRV_PCM_INFO_PAUSE |
  79                                            SNDRV_PCM_INFO_SYNC_START),
  80                                   .formats = SNDRV_PCM_FMTBIT_S24_3LE,
  81                                   .rates = SNDRV_PCM_RATE_48000,
  82                                   .rate_min = 48000,
  83                                   .rate_max = 48000,
  84                                   .channels_min = 2,
  85                                   .channels_max = 2,
  86                                   .buffer_bytes_max = 60000,
  87                                   .period_bytes_min = 64,
  88                                   .period_bytes_max = 8192,
  89                                   .periods_min = 1,
  90                                   .periods_max = 1024},
  91         .capture_hw = {
  92                                  .info = (SNDRV_PCM_INFO_MMAP |
  93                                           SNDRV_PCM_INFO_INTERLEAVED |
  94                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
  95                                           SNDRV_PCM_INFO_MMAP_VALID |
  96                                           SNDRV_PCM_INFO_SYNC_START),
  97                                  .formats = SNDRV_PCM_FMTBIT_S24_3LE,
  98                                  .rates = SNDRV_PCM_RATE_48000,
  99                                  .rate_min = 48000,
 100                                  .rate_max = 48000,
 101                                  .channels_min = 2,
 102                                  .channels_max = 2,
 103                                  .buffer_bytes_max = 60000,
 104                                  .period_bytes_min = 64,
 105                                  .period_bytes_max = 8192,
 106                                  .periods_min = 1,
 107                                  .periods_max = 1024},
 108         .rates = {
 109                             .nrats = 1,
 110                             .rats = &podhd_ratden},
 111         .bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */
 112 };
 113
 114 static struct line6_pcm_properties podx3_pcm_properties = {
 115         .playback_hw = {
 116                                   .info = (SNDRV_PCM_INFO_MMAP |
 117                                            SNDRV_PCM_INFO_INTERLEAVED |
 118                                            SNDRV_PCM_INFO_BLOCK_TRANSFER |
 119                                            SNDRV_PCM_INFO_MMAP_VALID |
 120                                            SNDRV_PCM_INFO_PAUSE |
 121                                            SNDRV_PCM_INFO_SYNC_START),
 122                                   .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 123                                   .rates = SNDRV_PCM_RATE_48000,
 124                                   .rate_min = 48000,
 125                                   .rate_max = 48000,
 126                                   .channels_min = 2,
 127                                   .channels_max = 2,
 128                                   .buffer_bytes_max = 60000,
 129                                   .period_bytes_min = 64,
 130                                   .period_bytes_max = 8192,
 131                                   .periods_min = 1,
 132                                   .periods_max = 1024},
 133         .capture_hw = {
 134                                  .info = (SNDRV_PCM_INFO_MMAP |
 135                                           SNDRV_PCM_INFO_INTERLEAVED |
 136                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
 137                                           SNDRV_PCM_INFO_MMAP_VALID |
 138                                           SNDRV_PCM_INFO_SYNC_START),
 139                                  .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 140                                  .rates = SNDRV_PCM_RATE_48000,
 141                                  .rate_min = 48000,
 142                                  .rate_max = 48000,
 143                                  /* 1+2: Main signal (out), 3+4: Tone 1,
 144                                   * 5+6: Tone 2, 7+8: raw
 145                                   */
 146                                  .channels_min = 8,
 147                                  .channels_max = 8,
 148                                  .buffer_bytes_max = 60000,
 149                                  .period_bytes_min = 64,
 150                                  .period_bytes_max = 8192,
 151                                  .periods_min = 1,
 152                                  .periods_max = 1024},
 153         .rates = {
 154                             .nrats = 1,
 155                             .rats = &podhd_ratden},
 156         .bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */
 157 };
 158 static struct usb_driver podhd_driver;
 159
 160 static void podhd_startup_start_workqueue(unsigned long data);
 161 static void podhd_startup_workqueue(struct work_struct *work);
 162 static int podhd_startup_finalize(struct usb_line6_podhd *pod);
 163
 164 static ssize_t serial_number_show(struct device *dev,
 165                                   struct device_attribute *attr, char *buf)
 166 {
 167         struct snd_card *card = dev_to_snd_card(dev);
 168         struct usb_line6_podhd *pod = card->private_data;
 169
 170         return sprintf(buf, "%u\n", pod->serial_number);
 171 }
 172
 173 static ssize_t firmware_version_show(struct device *dev,
 174                                      struct device_attribute *attr, char *buf)
 175 {
 176         struct snd_card *card = dev_to_snd_card(dev);
 177         struct usb_line6_podhd *pod = card->private_data;
 178
 179         return sprintf(buf, "%06x\n", pod->firmware_version);
 180 }
 181
 182 static DEVICE_ATTR_RO(firmware_version);
 183 static DEVICE_ATTR_RO(serial_number);
 184
 185 static struct attribute *podhd_dev_attrs[] = {
 186         &dev_attr_firmware_version.attr,
 187         &dev_attr_serial_number.attr,
 188         NULL
 189 };
 190
 191 static const struct attribute_group podhd_dev_attr_group = {
 192         .name = "podhd",
 193         .attrs = podhd_dev_attrs,
 194 };
 195
 196 /*
 197  * POD X3 startup procedure.
 198  *
 199  * May be compatible with other POD HD's, since it's also similar to the
 200  * previous POD setup. In any case, it doesn't seem to be required for the
 201  * audio nor bulk interfaces to work.
 202  */
 203
 204 static void podhd_startup(struct usb_line6_podhd *pod)
 205 {
 206         CHECK_STARTUP_PROGRESS(pod->startup_progress, PODHD_STARTUP_INIT);
 207
 208         /* delay startup procedure: */
 209         line6_start_timer(&pod->startup_timer, PODHD_STARTUP_DELAY,
 210                 podhd_startup_start_workqueue, (unsigned long)pod);
 211 }
 212
 213 static void podhd_startup_start_workqueue(unsigned long data)
 214 {
 215         struct usb_line6_podhd *pod = (struct usb_line6_podhd *)data;
 216
 217         CHECK_STARTUP_PROGRESS(pod->startup_progress,
 218                 PODHD_STARTUP_SCHEDULE_WORKQUEUE);
 219
 220         /* schedule work for global work queue: */
 221         schedule_work(&pod->startup_work);
 222 }
 223
 224 static int podhd_dev_start(struct usb_line6_podhd *pod)
 225 {
 226         int ret;
 227         u8 *init_bytes;
 228         int i;
 229         struct usb_device *usbdev = pod->line6.usbdev;
 230
 231         init_bytes = kmalloc(8, GFP_KERNEL);
 232         if (!init_bytes)
 233                 return -ENOMEM;
 234
 235         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0),
 236                                         0x67, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 237                                         0x11, 0,
 238                                         NULL, 0, LINE6_TIMEOUT);
 239         if (ret < 0) {
 240                 dev_err(pod->line6.ifcdev, "read request failed (error %d)\n", ret);
 241                 goto exit;
 242         }
 243
 244         /* NOTE: looks like some kind of ping message */
 245         ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), 0x67,
 246                                         USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 247                                         0x11, 0x0,
 248                                         init_bytes, 3, LINE6_TIMEOUT);
 249         if (ret < 0) {
 250                 dev_err(pod->line6.ifcdev,
 251                         "receive length failed (error %d)\n", ret);
 252                 goto exit;
 253         }
 254
 255         pod->firmware_version =
 256                 (init_bytes[0] << 16) | (init_bytes[1] << 8) | (init_bytes[2] << 0);
 257
 258         for (i = 0; i <= 16; i++) {
 259                 ret = line6_read_data(&pod->line6, 0xf000 + 0x08 * i, init_bytes, 8);
 260                 if (ret < 0)
 261                         goto exit;
 262         }
 263
 264         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0),
 265                                         USB_REQ_SET_FEATURE,
 266                                         USB_TYPE_STANDARD | USB_RECIP_DEVICE | USB_DIR_OUT,
 267                                         1, 0,
 268                                         NULL, 0, LINE6_TIMEOUT);
 269 exit:
 270         kfree(init_bytes);
 271         return ret;
 272 }
 273
 274 static void podhd_startup_workqueue(struct work_struct *work)
 275 {
 276         struct usb_line6_podhd *pod =
 277             container_of(work, struct usb_line6_podhd, startup_work);
 278
 279         CHECK_STARTUP_PROGRESS(pod->startup_progress, PODHD_STARTUP_SETUP);
 280
 281         podhd_dev_start(pod);
 282         line6_read_serial_number(&pod->line6, &pod->serial_number);
 283
 284         podhd_startup_finalize(pod);
 285 }
 286
 287 static int podhd_startup_finalize(struct usb_line6_podhd *pod)
 288 {
 289         struct usb_line6 *line6 = &pod->line6;
 290
 291         /* ALSA audio interface: */
 292         return snd_card_register(line6->card);
 293 }
 294
 295 static void podhd_disconnect(struct usb_line6 *line6)
 296 {
 297         struct usb_line6_podhd *pod = (struct usb_line6_podhd *)line6;
 298
 299         if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL_INFO) {
 300                 struct usb_interface *intf;
 301
 302                 del_timer_sync(&pod->startup_timer);
 303                 cancel_work_sync(&pod->startup_work);
 304
 305                 intf = usb_ifnum_to_if(line6->usbdev,
 306                                         pod->line6.properties->ctrl_if);
 307                 if (intf)
 308                         usb_driver_release_interface(&podhd_driver, intf);
 309         }
 310 }
 311
 312 /*
 313         Try to init POD HD device.
 314 */
 315 static int podhd_init(struct usb_line6 *line6,
 316                       const struct usb_device_id *id)
 317 {
 318         int err;
 319         struct usb_line6_podhd *pod = (struct usb_line6_podhd *) line6;
 320         struct usb_interface *intf;
 321
 322         line6->disconnect = podhd_disconnect;
 323
 324         init_timer(&pod->startup_timer);
 325         INIT_WORK(&pod->startup_work, podhd_startup_workqueue);
 326
 327         if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) {
 328                 /* claim the data interface */
 329                 intf = usb_ifnum_to_if(line6->usbdev,
 330                                         pod->line6.properties->ctrl_if);
 331                 if (!intf) {
 332                         dev_err(pod->line6.ifcdev, "interface %d not found\n",
 333                                 pod->line6.properties->ctrl_if);
 334                         return -ENODEV;
 335                 }
 336
 337                 err = usb_driver_claim_interface(&podhd_driver, intf, NULL);
 338                 if (err != 0) {
 339                         dev_err(pod->line6.ifcdev, "can't claim interface %d, error %d\n",
 340                                 pod->line6.properties->ctrl_if, err);
 341                         return err;
 342                 }
 343         }
 344
 345         if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL_INFO) {
 346                 /* create sysfs entries: */
 347                 err = snd_card_add_dev_attr(line6->card, &podhd_dev_attr_group);
 348                 if (err < 0)
 349                         return err;
 350         }
 351
 352         if (pod->line6.properties->capabilities & LINE6_CAP_PCM) {
 353                 /* initialize PCM subsystem: */
 354                 err = line6_init_pcm(line6,
 355                         (id->driver_info == LINE6_PODX3 ||
 356                         id->driver_info == LINE6_PODX3LIVE) ? &podx3_pcm_properties :
 357                         &podhd_pcm_properties);
 358                 if (err < 0)
 359                         return err;
 360         }
 361
 362         if (!(pod->line6.properties->capabilities & LINE6_CAP_CONTROL_INFO)) {
 363                 /* register USB audio system directly */
 364                 return podhd_startup_finalize(pod);
 365         }
 366
 367         /* init device and delay registering */
 368         podhd_startup(pod);
 369         return 0;
 370 }
 371
 372 #define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
 373 #define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)
 374
 375 /* table of devices that work with this driver */
 376 static const struct usb_device_id podhd_id_table[] = {
 377         /* TODO: no need to alloc data interfaces when only audio is used */
 378         { LINE6_DEVICE(0x5057),    .driver_info = LINE6_PODHD300 },
 379         { LINE6_DEVICE(0x5058),    .driver_info = LINE6_PODHD400 },
 380         { LINE6_IF_NUM(0x414D, 0), .driver_info = LINE6_PODHD500_0 },
 381         { LINE6_IF_NUM(0x414D, 1), .driver_info = LINE6_PODHD500_1 },
 382         { LINE6_IF_NUM(0x414A, 0), .driver_info = LINE6_PODX3 },
 383         { LINE6_IF_NUM(0x414B, 0), .driver_info = LINE6_PODX3LIVE },
 384         { LINE6_IF_NUM(0x4159, 0), .driver_info = LINE6_PODHD500X },
 385         {}
 386 };
 387
 388 MODULE_DEVICE_TABLE(usb, podhd_id_table);
 389
 390 static const struct line6_properties podhd_properties_table[] = {
 391         [LINE6_PODHD300] = {
 392                 .id = "PODHD300",
 393                 .name = "POD HD300",
 394                 .capabilities   = LINE6_CAP_PCM
 395                                 | LINE6_CAP_HWMON,
 396                 .altsetting = 5,
 397                 .ep_ctrl_r = 0x84,
 398                 .ep_ctrl_w = 0x03,
 399                 .ep_audio_r = 0x82,
 400                 .ep_audio_w = 0x01,
 401         },
 402         [LINE6_PODHD400] = {
 403                 .id = "PODHD400",
 404                 .name = "POD HD400",
 405                 .capabilities   = LINE6_CAP_PCM
 406                                 | LINE6_CAP_HWMON,
 407                 .altsetting = 5,
 408                 .ep_ctrl_r = 0x84,
 409                 .ep_ctrl_w = 0x03,
 410                 .ep_audio_r = 0x82,
 411                 .ep_audio_w = 0x01,
 412         },
 413         [LINE6_PODHD500_0] = {
 414                 .id = "PODHD500",
 415                 .name = "POD HD500",
 416                 .capabilities   = LINE6_CAP_PCM
 417                                 | LINE6_CAP_HWMON,
 418                 .altsetting = 0,
 419                 .ep_ctrl_r = 0x81,
 420                 .ep_ctrl_w = 0x01,
 421                 .ep_audio_r = 0x86,
 422                 .ep_audio_w = 0x02,
 423         },
 424         [LINE6_PODHD500_1] = {
 425                 .id = "PODHD500",
 426                 .name = "POD HD500",
 427                 .capabilities   = LINE6_CAP_PCM
 428                                 | LINE6_CAP_HWMON,
 429                 .altsetting = 1,
 430                 .ep_ctrl_r = 0x81,
 431                 .ep_ctrl_w = 0x01,
 432                 .ep_audio_r = 0x86,
 433                 .ep_audio_w = 0x02,
 434         },
 435         [LINE6_PODX3] = {
 436                 .id = "PODX3",
 437                 .name = "POD X3",
 438                 .capabilities   = LINE6_CAP_CONTROL | LINE6_CAP_CONTROL_INFO
 439                                 | LINE6_CAP_PCM | LINE6_CAP_HWMON | LINE6_CAP_IN_NEEDS_OUT,
 440                 .altsetting = 1,
 441                 .ep_ctrl_r = 0x81,
 442                 .ep_ctrl_w = 0x01,
 443                 .ctrl_if = 1,
 444                 .ep_audio_r = 0x86,
 445                 .ep_audio_w = 0x02,
 446         },
 447         [LINE6_PODX3LIVE] = {
 448                 .id = "PODX3LIVE",
 449                 .name = "POD X3 LIVE",
 450                 .capabilities   = LINE6_CAP_CONTROL | LINE6_CAP_CONTROL_INFO
 451                                 | LINE6_CAP_PCM | LINE6_CAP_HWMON | LINE6_CAP_IN_NEEDS_OUT,
 452                 .altsetting = 1,
 453                 .ep_ctrl_r = 0x81,
 454                 .ep_ctrl_w = 0x01,
 455                 .ctrl_if = 1,
 456                 .ep_audio_r = 0x86,
 457                 .ep_audio_w = 0x02,
 458         },
 459         [LINE6_PODHD500X] = {
 460                 .id = "PODHD500X",
 461                 .name = "POD HD500X",
 462                 .capabilities   = LINE6_CAP_CONTROL
 463                                 | LINE6_CAP_PCM | LINE6_CAP_HWMON,
 464                 .altsetting = 1,
 465                 .ep_ctrl_r = 0x81,
 466                 .ep_ctrl_w = 0x01,
 467                 .ctrl_if = 1,
 468                 .ep_audio_r = 0x86,
 469                 .ep_audio_w = 0x02,
 470         },
 471 };
 472
 473 /*
 474         Probe USB device.
 475 */
 476 static int podhd_probe(struct usb_interface *interface,
 477                        const struct usb_device_id *id)
 478 {
 479         return line6_probe(interface, id, "Line6-PODHD",
 480                            &podhd_properties_table[id->driver_info],
 481                            podhd_init, sizeof(struct usb_line6_podhd));
 482 }
 483
 484 static struct usb_driver podhd_driver = {
 485         .name = KBUILD_MODNAME,
 486         .probe = podhd_probe,
 487         .disconnect = line6_disconnect,
 488 #ifdef CONFIG_PM
 489         .suspend = line6_suspend,
 490         .resume = line6_resume,
 491         .reset_resume = line6_resume,
 492 #endif
 493         .id_table = podhd_id_table,
 494 };
 495
 496 module_usb_driver(podhd_driver);
 497
 498 MODULE_DESCRIPTION("Line 6 PODHD USB driver");
 499 MODULE_LICENSE("GPL");