sound/usb/line6/podhd.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Line 6 Pod HD
   4  *
   5  * Copyright (C) 2011 Stefan Hajnoczi <stefanha@gmail.com>
   6  * Copyright (C) 2015 Andrej Krutak <dev@andree.sk>
   7  * Copyright (C) 2017 Hans P. Moller <hmoller@uc.cl>
   8  */
   9
  10 #include <linux/usb.h>
  11 #include <linux/slab.h>
  12 #include <linux/module.h>
  13 #include <sound/core.h>
  14 #include <sound/pcm.h>
  15
  16 #include "driver.h"
  17 #include "pcm.h"
  18
  19 #define PODHD_STARTUP_DELAY 500
  20
  21 enum {
  22         LINE6_PODHD300,
  23         LINE6_PODHD400,
  24         LINE6_PODHD500,
  25         LINE6_PODX3,
  26         LINE6_PODX3LIVE,
  27         LINE6_PODHD500X,
  28         LINE6_PODHDDESKTOP
  29 };
  30
  31 struct usb_line6_podhd {
  32         /* Generic Line 6 USB data */
  33         struct usb_line6 line6;
  34
  35         /* Serial number of device */
  36         u32 serial_number;
  37
  38         /* Firmware version */
  39         int firmware_version;
  40 };
  41
  42 #define line6_to_podhd(x)       container_of(x, struct usb_line6_podhd, line6)
  43
  44 static const struct snd_ratden podhd_ratden = {
  45         .num_min = 48000,
  46         .num_max = 48000,
  47         .num_step = 1,
  48         .den = 1,
  49 };
  50
  51 static struct line6_pcm_properties podhd_pcm_properties = {
  52         .playback_hw = {
  53                                   .info = (SNDRV_PCM_INFO_MMAP |
  54                                            SNDRV_PCM_INFO_INTERLEAVED |
  55                                            SNDRV_PCM_INFO_BLOCK_TRANSFER |
  56                                            SNDRV_PCM_INFO_MMAP_VALID |
  57                                            SNDRV_PCM_INFO_PAUSE |
  58                                            SNDRV_PCM_INFO_SYNC_START),
  59                                   .formats = SNDRV_PCM_FMTBIT_S24_3LE,
  60                                   .rates = SNDRV_PCM_RATE_48000,
  61                                   .rate_min = 48000,
  62                                   .rate_max = 48000,
  63                                   .channels_min = 2,
  64                                   .channels_max = 2,
  65                                   .buffer_bytes_max = 60000,
  66                                   .period_bytes_min = 64,
  67                                   .period_bytes_max = 8192,
  68                                   .periods_min = 1,
  69                                   .periods_max = 1024},
  70         .capture_hw = {
  71                                  .info = (SNDRV_PCM_INFO_MMAP |
  72                                           SNDRV_PCM_INFO_INTERLEAVED |
  73                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
  74                                           SNDRV_PCM_INFO_MMAP_VALID |
  75                                           SNDRV_PCM_INFO_SYNC_START),
  76                                  .formats = SNDRV_PCM_FMTBIT_S24_3LE,
  77                                  .rates = SNDRV_PCM_RATE_48000,
  78                                  .rate_min = 48000,
  79                                  .rate_max = 48000,
  80                                  .channels_min = 2,
  81                                  .channels_max = 2,
  82                                  .buffer_bytes_max = 60000,
  83                                  .period_bytes_min = 64,
  84                                  .period_bytes_max = 8192,
  85                                  .periods_min = 1,
  86                                  .periods_max = 1024},
  87         .rates = {
  88                             .nrats = 1,
  89                             .rats = &podhd_ratden},
  90         .bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */
  91 };
  92
  93 static struct line6_pcm_properties podx3_pcm_properties = {
  94         .playback_hw = {
  95                                   .info = (SNDRV_PCM_INFO_MMAP |
  96                                            SNDRV_PCM_INFO_INTERLEAVED |
  97                                            SNDRV_PCM_INFO_BLOCK_TRANSFER |
  98                                            SNDRV_PCM_INFO_MMAP_VALID |
  99                                            SNDRV_PCM_INFO_PAUSE |
 100                                            SNDRV_PCM_INFO_SYNC_START),
 101                                   .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 102                                   .rates = SNDRV_PCM_RATE_48000,
 103                                   .rate_min = 48000,
 104                                   .rate_max = 48000,
 105                                   .channels_min = 2,
 106                                   .channels_max = 2,
 107                                   .buffer_bytes_max = 60000,
 108                                   .period_bytes_min = 64,
 109                                   .period_bytes_max = 8192,
 110                                   .periods_min = 1,
 111                                   .periods_max = 1024},
 112         .capture_hw = {
 113                                  .info = (SNDRV_PCM_INFO_MMAP |
 114                                           SNDRV_PCM_INFO_INTERLEAVED |
 115                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
 116                                           SNDRV_PCM_INFO_MMAP_VALID |
 117                                           SNDRV_PCM_INFO_SYNC_START),
 118                                  .formats = SNDRV_PCM_FMTBIT_S24_3LE,
 119                                  .rates = SNDRV_PCM_RATE_48000,
 120                                  .rate_min = 48000,
 121                                  .rate_max = 48000,
 122                                  /* 1+2: Main signal (out), 3+4: Tone 1,
 123                                   * 5+6: Tone 2, 7+8: raw
 124                                   */
 125                                  .channels_min = 8,
 126                                  .channels_max = 8,
 127                                  .buffer_bytes_max = 60000,
 128                                  .period_bytes_min = 64,
 129                                  .period_bytes_max = 8192,
 130                                  .periods_min = 1,
 131                                  .periods_max = 1024},
 132         .rates = {
 133                             .nrats = 1,
 134                             .rats = &podhd_ratden},
 135         .bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */
 136 };
 137 static struct usb_driver podhd_driver;
 138
 139 static ssize_t serial_number_show(struct device *dev,
 140                                   struct device_attribute *attr, char *buf)
 141 {
 142         struct snd_card *card = dev_to_snd_card(dev);
 143         struct usb_line6_podhd *pod = card->private_data;
 144
 145         return sprintf(buf, "%u\n", pod->serial_number);
 146 }
 147
 148 static ssize_t firmware_version_show(struct device *dev,
 149                                      struct device_attribute *attr, char *buf)
 150 {
 151         struct snd_card *card = dev_to_snd_card(dev);
 152         struct usb_line6_podhd *pod = card->private_data;
 153
 154         return sprintf(buf, "%06x\n", pod->firmware_version);
 155 }
 156
 157 static DEVICE_ATTR_RO(firmware_version);
 158 static DEVICE_ATTR_RO(serial_number);
 159
 160 static struct attribute *podhd_dev_attrs[] = {
 161         &dev_attr_firmware_version.attr,
 162         &dev_attr_serial_number.attr,
 163         NULL
 164 };
 165
 166 static const struct attribute_group podhd_dev_attr_group = {
 167         .name = "podhd",
 168         .attrs = podhd_dev_attrs,
 169 };
 170
 171 /*
 172  * POD X3 startup procedure.
 173  *
 174  * May be compatible with other POD HD's, since it's also similar to the
 175  * previous POD setup. In any case, it doesn't seem to be required for the
 176  * audio nor bulk interfaces to work.
 177  */
 178
 179 static int podhd_dev_start(struct usb_line6_podhd *pod)
 180 {
 181         int ret;
 182         u8 *init_bytes;
 183         int i;
 184         struct usb_device *usbdev = pod->line6.usbdev;
 185
 186         init_bytes = kmalloc(8, GFP_KERNEL);
 187         if (!init_bytes)
 188                 return -ENOMEM;
 189
 190         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0),
 191                                         0x67, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 192                                         0x11, 0,
 193                                         NULL, 0, LINE6_TIMEOUT * HZ);
 194         if (ret < 0) {
 195                 dev_err(pod->line6.ifcdev, "read request failed (error %d)\n", ret);
 196                 goto exit;
 197         }
 198
 199         /* NOTE: looks like some kind of ping message */
 200         ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), 0x67,
 201                                         USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 202                                         0x11, 0x0,
 203                                         init_bytes, 3, LINE6_TIMEOUT * HZ);
 204         if (ret < 0) {
 205                 dev_err(pod->line6.ifcdev,
 206                         "receive length failed (error %d)\n", ret);
 207                 goto exit;
 208         }
 209
 210         pod->firmware_version =
 211                 (init_bytes[0] << 16) | (init_bytes[1] << 8) | (init_bytes[2] << 0);
 212
 213         for (i = 0; i <= 16; i++) {
 214                 ret = line6_read_data(&pod->line6, 0xf000 + 0x08 * i, init_bytes, 8);
 215                 if (ret < 0)
 216                         goto exit;
 217         }
 218
 219         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0),
 220                                         USB_REQ_SET_FEATURE,
 221                                         USB_TYPE_STANDARD | USB_RECIP_DEVICE | USB_DIR_OUT,
 222                                         1, 0,
 223                                         NULL, 0, LINE6_TIMEOUT * HZ);
 224 exit:
 225         kfree(init_bytes);
 226         return ret;
 227 }
 228
 229 static void podhd_startup(struct usb_line6 *line6)
 230 {
 231         struct usb_line6_podhd *pod = line6_to_podhd(line6);
 232
 233         podhd_dev_start(pod);
 234         line6_read_serial_number(&pod->line6, &pod->serial_number);
 235         if (snd_card_register(line6->card))
 236                 dev_err(line6->ifcdev, "Failed to register POD HD card.\n");
 237 }
 238
 239 static void podhd_disconnect(struct usb_line6 *line6)
 240 {
 241         struct usb_line6_podhd *pod = line6_to_podhd(line6);
 242
 243         if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL_INFO) {
 244                 struct usb_interface *intf;
 245
 246                 intf = usb_ifnum_to_if(line6->usbdev,
 247                                         pod->line6.properties->ctrl_if);
 248                 if (intf)
 249                         usb_driver_release_interface(&podhd_driver, intf);
 250         }
 251 }
 252
 253 /*
 254         Try to init POD HD device.
 255 */
 256 static int podhd_init(struct usb_line6 *line6,
 257                       const struct usb_device_id *id)
 258 {
 259         int err;
 260         struct usb_line6_podhd *pod = line6_to_podhd(line6);
 261         struct usb_interface *intf;
 262
 263         line6->disconnect = podhd_disconnect;
 264         line6->startup = podhd_startup;
 265
 266         if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) {
 267                 /* claim the data interface */
 268                 intf = usb_ifnum_to_if(line6->usbdev,
 269                                         pod->line6.properties->ctrl_if);
 270                 if (!intf) {
 271                         dev_err(pod->line6.ifcdev, "interface %d not found\n",
 272                                 pod->line6.properties->ctrl_if);
 273                         return -ENODEV;
 274                 }
 275
 276                 err = usb_driver_claim_interface(&podhd_driver, intf, NULL);
 277                 if (err != 0) {
 278                         dev_err(pod->line6.ifcdev, "can't claim interface %d, error %d\n",
 279                                 pod->line6.properties->ctrl_if, err);
 280                         return err;
 281                 }
 282         }
 283
 284         if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL_INFO) {
 285                 /* create sysfs entries: */
 286                 err = snd_card_add_dev_attr(line6->card, &podhd_dev_attr_group);
 287                 if (err < 0)
 288                         return err;
 289         }
 290
 291         if (pod->line6.properties->capabilities & LINE6_CAP_PCM) {
 292                 /* initialize PCM subsystem: */
 293                 err = line6_init_pcm(line6,
 294                         (id->driver_info == LINE6_PODX3 ||
 295                         id->driver_info == LINE6_PODX3LIVE) ? &podx3_pcm_properties :
 296                         &podhd_pcm_properties);
 297                 if (err < 0)
 298                         return err;
 299         }
 300
 301         if (!(pod->line6.properties->capabilities & LINE6_CAP_CONTROL_INFO)) {
 302                 /* register USB audio system directly */
 303                 return snd_card_register(line6->card);
 304         }
 305
 306         /* init device and delay registering */
 307         schedule_delayed_work(&line6->startup_work,
 308                               msecs_to_jiffies(PODHD_STARTUP_DELAY));
 309         return 0;
 310 }
 311
 312 #define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
 313 #define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)
 314
 315 /* table of devices that work with this driver */
 316 static const struct usb_device_id podhd_id_table[] = {
 317         /* TODO: no need to alloc data interfaces when only audio is used */
 318         { LINE6_DEVICE(0x5057),    .driver_info = LINE6_PODHD300 },
 319         { LINE6_DEVICE(0x5058),    .driver_info = LINE6_PODHD400 },
 320         { LINE6_IF_NUM(0x414D, 0), .driver_info = LINE6_PODHD500 },
 321         { LINE6_IF_NUM(0x414A, 0), .driver_info = LINE6_PODX3 },
 322         { LINE6_IF_NUM(0x414B, 0), .driver_info = LINE6_PODX3LIVE },
 323         { LINE6_IF_NUM(0x4159, 0), .driver_info = LINE6_PODHD500X },
 324         { LINE6_IF_NUM(0x4156, 0), .driver_info = LINE6_PODHDDESKTOP },
 325         {}
 326 };
 327
 328 MODULE_DEVICE_TABLE(usb, podhd_id_table);
 329
 330 static const struct line6_properties podhd_properties_table[] = {
 331         [LINE6_PODHD300] = {
 332                 .id = "PODHD300",
 333                 .name = "POD HD300",
 334                 .capabilities   = LINE6_CAP_PCM
 335                                 | LINE6_CAP_HWMON,
 336                 .altsetting = 5,
 337                 .ep_ctrl_r = 0x84,
 338                 .ep_ctrl_w = 0x03,
 339                 .ep_audio_r = 0x82,
 340                 .ep_audio_w = 0x01,
 341         },
 342         [LINE6_PODHD400] = {
 343                 .id = "PODHD400",
 344                 .name = "POD HD400",
 345                 .capabilities   = LINE6_CAP_PCM
 346                                 | LINE6_CAP_HWMON,
 347                 .altsetting = 5,
 348                 .ep_ctrl_r = 0x84,
 349                 .ep_ctrl_w = 0x03,
 350                 .ep_audio_r = 0x82,
 351                 .ep_audio_w = 0x01,
 352         },
 353         [LINE6_PODHD500] = {
 354                 .id = "PODHD500",
 355                 .name = "POD HD500",
 356                 .capabilities   = LINE6_CAP_PCM | LINE6_CAP_CONTROL
 357                                 | LINE6_CAP_HWMON,
 358                 .altsetting = 1,
 359                 .ctrl_if = 1,
 360                 .ep_ctrl_r = 0x81,
 361                 .ep_ctrl_w = 0x01,
 362                 .ep_audio_r = 0x86,
 363                 .ep_audio_w = 0x02,
 364         },
 365         [LINE6_PODX3] = {
 366                 .id = "PODX3",
 367                 .name = "POD X3",
 368                 .capabilities   = LINE6_CAP_CONTROL | LINE6_CAP_CONTROL_INFO
 369                                 | LINE6_CAP_PCM | LINE6_CAP_HWMON | LINE6_CAP_IN_NEEDS_OUT,
 370                 .altsetting = 1,
 371                 .ep_ctrl_r = 0x81,
 372                 .ep_ctrl_w = 0x01,
 373                 .ctrl_if = 1,
 374                 .ep_audio_r = 0x86,
 375                 .ep_audio_w = 0x02,
 376         },
 377         [LINE6_PODX3LIVE] = {
 378                 .id = "PODX3LIVE",
 379                 .name = "POD X3 LIVE",
 380                 .capabilities   = LINE6_CAP_CONTROL | LINE6_CAP_CONTROL_INFO
 381                                 | LINE6_CAP_PCM | LINE6_CAP_HWMON | LINE6_CAP_IN_NEEDS_OUT,
 382                 .altsetting = 1,
 383                 .ep_ctrl_r = 0x81,
 384                 .ep_ctrl_w = 0x01,
 385                 .ctrl_if = 1,
 386                 .ep_audio_r = 0x86,
 387                 .ep_audio_w = 0x02,
 388         },
 389         [LINE6_PODHD500X] = {
 390                 .id = "PODHD500X",
 391                 .name = "POD HD500X",
 392                 .capabilities   = LINE6_CAP_CONTROL
 393                                 | LINE6_CAP_PCM | LINE6_CAP_HWMON,
 394                 .altsetting = 1,
 395                 .ep_ctrl_r = 0x81,
 396                 .ep_ctrl_w = 0x01,
 397                 .ctrl_if = 1,
 398                 .ep_audio_r = 0x86,
 399                 .ep_audio_w = 0x02,
 400         },
 401         [LINE6_PODHDDESKTOP] = {
 402                 .id = "PODHDDESKTOP",
 403                 .name = "POD HDDESKTOP",
 404                 .capabilities    = LINE6_CAP_CONTROL
 405                         | LINE6_CAP_PCM | LINE6_CAP_HWMON,
 406                 .altsetting = 1,
 407                 .ep_ctrl_r = 0x81,
 408                 .ep_ctrl_w = 0x01,
 409                 .ctrl_if = 1,
 410                 .ep_audio_r = 0x86,
 411                 .ep_audio_w = 0x02,
 412         },
 413 };
 414
 415 /*
 416         Probe USB device.
 417 */
 418 static int podhd_probe(struct usb_interface *interface,
 419                        const struct usb_device_id *id)
 420 {
 421         return line6_probe(interface, id, "Line6-PODHD",
 422                            &podhd_properties_table[id->driver_info],
 423                            podhd_init, sizeof(struct usb_line6_podhd));
 424 }
 425
 426 static struct usb_driver podhd_driver = {
 427         .name = KBUILD_MODNAME,
 428         .probe = podhd_probe,
 429         .disconnect = line6_disconnect,
 430 #ifdef CONFIG_PM
 431         .suspend = line6_suspend,
 432         .resume = line6_resume,
 433         .reset_resume = line6_resume,
 434 #endif
 435         .id_table = podhd_id_table,
 436 };
 437
 438 module_usb_driver(podhd_driver);
 439
 440 MODULE_DESCRIPTION("Line 6 PODHD USB driver");
 441 MODULE_LICENSE("GPL");