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/control.h> 15#include <sound/pcm.h> 16 17#include "driver.h" 18#include "pcm.h" 19 20#define PODHD_STARTUP_DELAY 500 21 22enum { 23 LINE6_PODHD300, 24 LINE6_PODHD400, 25 LINE6_PODHD500, 26 LINE6_PODX3, 27 LINE6_PODX3LIVE, 28 LINE6_PODHD500X, 29 LINE6_PODHDDESKTOP 30}; 31 32struct usb_line6_podhd { 33 /* Generic Line 6 USB data */ 34 struct usb_line6 line6; 35 36 /* Serial number of device */ 37 u32 serial_number; 38 39 /* Firmware version */ 40 int firmware_version; 41 42 /* Monitor level */ 43 int monitor_level; 44}; 45 46#define line6_to_podhd(x) container_of(x, struct usb_line6_podhd, line6) 47 48static const struct snd_ratden podhd_ratden = { 49 .num_min = 48000, 50 .num_max = 48000, 51 .num_step = 1, 52 .den = 1, 53}; 54 55static struct line6_pcm_properties podhd_pcm_properties = { 56 .playback_hw = { 57 .info = (SNDRV_PCM_INFO_MMAP | 58 SNDRV_PCM_INFO_INTERLEAVED | 59 SNDRV_PCM_INFO_BLOCK_TRANSFER | 60 SNDRV_PCM_INFO_MMAP_VALID | 61 SNDRV_PCM_INFO_PAUSE | 62 SNDRV_PCM_INFO_SYNC_START), 63 .formats = SNDRV_PCM_FMTBIT_S24_3LE, 64 .rates = SNDRV_PCM_RATE_48000, 65 .rate_min = 48000, 66 .rate_max = 48000, 67 .channels_min = 2, 68 .channels_max = 2, 69 .buffer_bytes_max = 60000, 70 .period_bytes_min = 64, 71 .period_bytes_max = 8192, 72 .periods_min = 1, 73 .periods_max = 1024}, 74 .capture_hw = { 75 .info = (SNDRV_PCM_INFO_MMAP | 76 SNDRV_PCM_INFO_INTERLEAVED | 77 SNDRV_PCM_INFO_BLOCK_TRANSFER | 78 SNDRV_PCM_INFO_MMAP_VALID | 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 .rates = { 92 .nrats = 1, 93 .rats = &podhd_ratden}, 94 .bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */ 95}; 96 97static struct line6_pcm_properties podx3_pcm_properties = { 98 .playback_hw = { 99 .info = (SNDRV_PCM_INFO_MMAP | 100 SNDRV_PCM_INFO_INTERLEAVED | 101 SNDRV_PCM_INFO_BLOCK_TRANSFER | 102 SNDRV_PCM_INFO_MMAP_VALID | 103 SNDRV_PCM_INFO_PAUSE | 104 SNDRV_PCM_INFO_SYNC_START), 105 .formats = SNDRV_PCM_FMTBIT_S24_3LE, 106 .rates = SNDRV_PCM_RATE_48000, 107 .rate_min = 48000, 108 .rate_max = 48000, 109 .channels_min = 2, 110 .channels_max = 2, 111 .buffer_bytes_max = 60000, 112 .period_bytes_min = 64, 113 .period_bytes_max = 8192, 114 .periods_min = 1, 115 .periods_max = 1024}, 116 .capture_hw = { 117 .info = (SNDRV_PCM_INFO_MMAP | 118 SNDRV_PCM_INFO_INTERLEAVED | 119 SNDRV_PCM_INFO_BLOCK_TRANSFER | 120 SNDRV_PCM_INFO_MMAP_VALID | 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 /* 1+2: Main signal (out), 3+4: Tone 1, 127 * 5+6: Tone 2, 7+8: raw 128 */ 129 .channels_min = 8, 130 .channels_max = 8, 131 .buffer_bytes_max = 60000, 132 .period_bytes_min = 64, 133 .period_bytes_max = 8192, 134 .periods_min = 1, 135 .periods_max = 1024}, 136 .rates = { 137 .nrats = 1, 138 .rats = &podhd_ratden}, 139 .bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */ 140}; 141static struct usb_driver podhd_driver; 142 143static ssize_t serial_number_show(struct device *dev, 144 struct device_attribute *attr, char *buf) 145{ 146 struct snd_card *card = dev_to_snd_card(dev); 147 struct usb_line6_podhd *pod = card->private_data; 148 149 return sysfs_emit(buf, "%u\n", pod->serial_number); 150} 151 152static ssize_t firmware_version_show(struct device *dev, 153 struct device_attribute *attr, char *buf) 154{ 155 struct snd_card *card = dev_to_snd_card(dev); 156 struct usb_line6_podhd *pod = card->private_data; 157 158 return sysfs_emit(buf, "%06x\n", pod->firmware_version); 159} 160 161static DEVICE_ATTR_RO(firmware_version); 162static DEVICE_ATTR_RO(serial_number); 163 164static struct attribute *podhd_dev_attrs[] = { 165 &dev_attr_firmware_version.attr, 166 &dev_attr_serial_number.attr, 167 NULL 168}; 169 170static const struct attribute_group podhd_dev_attr_group = { 171 .name = "podhd", 172 .attrs = podhd_dev_attrs, 173}; 174 175/* 176 * POD X3 startup procedure. 177 * 178 * May be compatible with other POD HD's, since it's also similar to the 179 * previous POD setup. In any case, it doesn't seem to be required for the 180 * audio nor bulk interfaces to work. 181 */ 182 183static int podhd_dev_start(struct usb_line6_podhd *pod) 184{ 185 int ret; 186 u8 init_bytes[8]; 187 int i; 188 struct usb_device *usbdev = pod->line6.usbdev; 189 190 ret = usb_control_msg_send(usbdev, 0, 191 0x67, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 192 0x11, 0, 193 NULL, 0, LINE6_TIMEOUT, GFP_KERNEL); 194 if (ret) { 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_recv(usbdev, 0, 0x67, 201 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 202 0x11, 0x0, 203 init_bytes, 3, LINE6_TIMEOUT, GFP_KERNEL); 204 if (ret) { 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_send(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, GFP_KERNEL); 224exit: 225 return ret; 226} 227 228static void podhd_startup(struct usb_line6 *line6) 229{ 230 struct usb_line6_podhd *pod = line6_to_podhd(line6); 231 232 podhd_dev_start(pod); 233 line6_read_serial_number(&pod->line6, &pod->serial_number); 234 if (snd_card_register(line6->card)) 235 dev_err(line6->ifcdev, "Failed to register POD HD card.\n"); 236} 237 238static void podhd_disconnect(struct usb_line6 *line6) 239{ 240 struct usb_line6_podhd *pod = line6_to_podhd(line6); 241 242 if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL_INFO) { 243 struct usb_interface *intf; 244 245 intf = usb_ifnum_to_if(line6->usbdev, 246 pod->line6.properties->ctrl_if); 247 if (intf) 248 usb_driver_release_interface(&podhd_driver, intf); 249 } 250} 251 252static const unsigned int float_zero_to_one_lookup[] = { 2530x00000000, 0x3c23d70a, 0x3ca3d70a, 0x3cf5c28f, 0x3d23d70a, 0x3d4ccccd, 2540x3d75c28f, 0x3d8f5c29, 0x3da3d70a, 0x3db851ec, 0x3dcccccd, 0x3de147ae, 2550x3df5c28f, 0x3e051eb8, 0x3e0f5c29, 0x3e19999a, 0x3e23d70a, 0x3e2e147b, 2560x3e3851ec, 0x3e428f5c, 0x3e4ccccd, 0x3e570a3d, 0x3e6147ae, 0x3e6b851f, 2570x3e75c28f, 0x3e800000, 0x3e851eb8, 0x3e8a3d71, 0x3e8f5c29, 0x3e947ae1, 2580x3e99999a, 0x3e9eb852, 0x3ea3d70a, 0x3ea8f5c3, 0x3eae147b, 0x3eb33333, 2590x3eb851ec, 0x3ebd70a4, 0x3ec28f5c, 0x3ec7ae14, 0x3ecccccd, 0x3ed1eb85, 2600x3ed70a3d, 0x3edc28f6, 0x3ee147ae, 0x3ee66666, 0x3eeb851f, 0x3ef0a3d7, 2610x3ef5c28f, 0x3efae148, 0x3f000000, 0x3f028f5c, 0x3f051eb8, 0x3f07ae14, 2620x3f0a3d71, 0x3f0ccccd, 0x3f0f5c29, 0x3f11eb85, 0x3f147ae1, 0x3f170a3d, 2630x3f19999a, 0x3f1c28f6, 0x3f1eb852, 0x3f2147ae, 0x3f23d70a, 0x3f266666, 2640x3f28f5c3, 0x3f2b851f, 0x3f2e147b, 0x3f30a3d7, 0x3f333333, 0x3f35c28f, 2650x3f3851ec, 0x3f3ae148, 0x3f3d70a4, 0x3f400000, 0x3f428f5c, 0x3f451eb8, 2660x3f47ae14, 0x3f4a3d71, 0x3f4ccccd, 0x3f4f5c29, 0x3f51eb85, 0x3f547ae1, 2670x3f570a3d, 0x3f59999a, 0x3f5c28f6, 0x3f5eb852, 0x3f6147ae, 0x3f63d70a, 2680x3f666666, 0x3f68f5c3, 0x3f6b851f, 0x3f6e147b, 0x3f70a3d7, 0x3f733333, 2690x3f75c28f, 0x3f7851ec, 0x3f7ae148, 0x3f7d70a4, 0x3f800000 270}; 271 272static void podhd_set_monitor_level(struct usb_line6_podhd *podhd, int value) 273{ 274 unsigned int fl; 275 static const unsigned char msg[16] = { 276 /* Chunk is 0xc bytes (without first word) */ 277 0x0c, 0x00, 278 /* First chunk in the message */ 279 0x01, 0x00, 280 /* Message size is 2 4-byte words */ 281 0x02, 0x00, 282 /* Unknown */ 283 0x04, 0x41, 284 /* Unknown */ 285 0x04, 0x00, 0x13, 0x00, 286 /* Volume, LE float32, 0.0 - 1.0 */ 287 0x00, 0x00, 0x00, 0x00 288 }; 289 unsigned char *buf; 290 291 buf = kmemdup(msg, sizeof(msg), GFP_KERNEL); 292 if (!buf) 293 return; 294 295 if (value < 0) 296 value = 0; 297 298 if (value >= ARRAY_SIZE(float_zero_to_one_lookup)) 299 value = ARRAY_SIZE(float_zero_to_one_lookup) - 1; 300 301 fl = float_zero_to_one_lookup[value]; 302 303 buf[12] = (fl >> 0) & 0xff; 304 buf[13] = (fl >> 8) & 0xff; 305 buf[14] = (fl >> 16) & 0xff; 306 buf[15] = (fl >> 24) & 0xff; 307 308 line6_send_raw_message(&podhd->line6, buf, sizeof(msg)); 309 kfree(buf); 310 311 podhd->monitor_level = value; 312} 313 314/* control info callback */ 315static int snd_podhd_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 = 100; 322 uinfo->value.integer.step = 1; 323 return 0; 324} 325 326/* control get callback */ 327static int snd_podhd_control_monitor_get(struct snd_kcontrol *kcontrol, 328 struct snd_ctl_elem_value *ucontrol) 329{ 330 struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); 331 struct usb_line6_podhd *podhd = line6_to_podhd(line6pcm->line6); 332 333 ucontrol->value.integer.value[0] = podhd->monitor_level; 334 return 0; 335} 336 337/* control put callback */ 338static int snd_podhd_control_monitor_put(struct snd_kcontrol *kcontrol, 339 struct snd_ctl_elem_value *ucontrol) 340{ 341 struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); 342 struct usb_line6_podhd *podhd = line6_to_podhd(line6pcm->line6); 343 344 if (ucontrol->value.integer.value[0] == podhd->monitor_level) 345 return 0; 346 347 podhd_set_monitor_level(podhd, ucontrol->value.integer.value[0]); 348 return 1; 349} 350 351/* control definition */ 352static const struct snd_kcontrol_new podhd_control_monitor = { 353 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 354 .name = "Monitor Playback Volume", 355 .index = 0, 356 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 357 .info = snd_podhd_control_monitor_info, 358 .get = snd_podhd_control_monitor_get, 359 .put = snd_podhd_control_monitor_put 360}; 361 362/* 363 Try to init POD HD device. 364*/ 365static int podhd_init(struct usb_line6 *line6, 366 const struct usb_device_id *id) 367{ 368 int err; 369 struct usb_line6_podhd *pod = line6_to_podhd(line6); 370 struct usb_interface *intf; 371 372 line6->disconnect = podhd_disconnect; 373 line6->startup = podhd_startup; 374 375 if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) { 376 /* claim the data interface */ 377 intf = usb_ifnum_to_if(line6->usbdev, 378 pod->line6.properties->ctrl_if); 379 if (!intf) { 380 dev_err(pod->line6.ifcdev, "interface %d not found\n", 381 pod->line6.properties->ctrl_if); 382 return -ENODEV; 383 } 384 385 err = usb_driver_claim_interface(&podhd_driver, intf, NULL); 386 if (err != 0) { 387 dev_err(pod->line6.ifcdev, "can't claim interface %d, error %d\n", 388 pod->line6.properties->ctrl_if, err); 389 return err; 390 } 391 } 392 393 if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL_INFO) { 394 /* create sysfs entries: */ 395 err = snd_card_add_dev_attr(line6->card, &podhd_dev_attr_group); 396 if (err < 0) 397 return err; 398 } 399 400 if (pod->line6.properties->capabilities & LINE6_CAP_PCM) { 401 /* initialize PCM subsystem: */ 402 err = line6_init_pcm(line6, 403 (id->driver_info == LINE6_PODX3 || 404 id->driver_info == LINE6_PODX3LIVE) ? &podx3_pcm_properties : 405 &podhd_pcm_properties); 406 if (err < 0) 407 return err; 408 } 409 410 if (pod->line6.properties->capabilities & LINE6_CAP_HWMON_CTL) { 411 podhd_set_monitor_level(pod, 100); 412 err = snd_ctl_add(line6->card, 413 snd_ctl_new1(&podhd_control_monitor, 414 line6->line6pcm)); 415 if (err < 0) 416 return err; 417 } 418 419 if (!(pod->line6.properties->capabilities & LINE6_CAP_CONTROL_INFO)) { 420 /* register USB audio system directly */ 421 return snd_card_register(line6->card); 422 } 423 424 /* init device and delay registering */ 425 schedule_delayed_work(&line6->startup_work, 426 msecs_to_jiffies(PODHD_STARTUP_DELAY)); 427 return 0; 428} 429 430#define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod) 431#define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n) 432 433/* table of devices that work with this driver */ 434static const struct usb_device_id podhd_id_table[] = { 435 /* TODO: no need to alloc data interfaces when only audio is used */ 436 { LINE6_DEVICE(0x5057), .driver_info = LINE6_PODHD300 }, 437 { LINE6_DEVICE(0x5058), .driver_info = LINE6_PODHD400 }, 438 { LINE6_IF_NUM(0x414D, 0), .driver_info = LINE6_PODHD500 }, 439 { LINE6_IF_NUM(0x414A, 0), .driver_info = LINE6_PODX3 }, 440 { LINE6_IF_NUM(0x414B, 0), .driver_info = LINE6_PODX3LIVE }, 441 { LINE6_IF_NUM(0x4159, 0), .driver_info = LINE6_PODHD500X }, 442 { LINE6_IF_NUM(0x4156, 0), .driver_info = LINE6_PODHDDESKTOP }, 443 {} 444}; 445 446MODULE_DEVICE_TABLE(usb, podhd_id_table); 447 448static const struct line6_properties podhd_properties_table[] = { 449 [LINE6_PODHD300] = { 450 .id = "PODHD300", 451 .name = "POD HD300", 452 .capabilities = LINE6_CAP_PCM 453 | LINE6_CAP_HWMON, 454 .altsetting = 5, 455 .ep_ctrl_r = 0x84, 456 .ep_ctrl_w = 0x03, 457 .ep_audio_r = 0x82, 458 .ep_audio_w = 0x01, 459 }, 460 [LINE6_PODHD400] = { 461 .id = "PODHD400", 462 .name = "POD HD400", 463 .capabilities = LINE6_CAP_PCM 464 | LINE6_CAP_HWMON, 465 .altsetting = 5, 466 .ep_ctrl_r = 0x84, 467 .ep_ctrl_w = 0x03, 468 .ep_audio_r = 0x82, 469 .ep_audio_w = 0x01, 470 }, 471 [LINE6_PODHD500] = { 472 .id = "PODHD500", 473 .name = "POD HD500", 474 .capabilities = LINE6_CAP_PCM | LINE6_CAP_CONTROL 475 | LINE6_CAP_HWMON | LINE6_CAP_HWMON_CTL, 476 .altsetting = 1, 477 .ctrl_if = 1, 478 .ep_ctrl_r = 0x81, 479 .ep_ctrl_w = 0x01, 480 .ep_audio_r = 0x86, 481 .ep_audio_w = 0x02, 482 }, 483 [LINE6_PODX3] = { 484 .id = "PODX3", 485 .name = "POD X3", 486 .capabilities = LINE6_CAP_CONTROL | LINE6_CAP_CONTROL_INFO 487 | LINE6_CAP_PCM | LINE6_CAP_HWMON | LINE6_CAP_IN_NEEDS_OUT, 488 .altsetting = 1, 489 .ep_ctrl_r = 0x81, 490 .ep_ctrl_w = 0x01, 491 .ctrl_if = 1, 492 .ep_audio_r = 0x86, 493 .ep_audio_w = 0x02, 494 }, 495 [LINE6_PODX3LIVE] = { 496 .id = "PODX3LIVE", 497 .name = "POD X3 LIVE", 498 .capabilities = LINE6_CAP_CONTROL | LINE6_CAP_CONTROL_INFO 499 | LINE6_CAP_PCM | LINE6_CAP_HWMON | LINE6_CAP_IN_NEEDS_OUT, 500 .altsetting = 1, 501 .ep_ctrl_r = 0x81, 502 .ep_ctrl_w = 0x01, 503 .ctrl_if = 1, 504 .ep_audio_r = 0x86, 505 .ep_audio_w = 0x02, 506 }, 507 [LINE6_PODHD500X] = { 508 .id = "PODHD500X", 509 .name = "POD HD500X", 510 .capabilities = LINE6_CAP_CONTROL 511 | LINE6_CAP_PCM | LINE6_CAP_HWMON, 512 .altsetting = 1, 513 .ep_ctrl_r = 0x81, 514 .ep_ctrl_w = 0x01, 515 .ctrl_if = 1, 516 .ep_audio_r = 0x86, 517 .ep_audio_w = 0x02, 518 }, 519 [LINE6_PODHDDESKTOP] = { 520 .id = "PODHDDESKTOP", 521 .name = "POD HDDESKTOP", 522 .capabilities = LINE6_CAP_CONTROL 523 | LINE6_CAP_PCM | LINE6_CAP_HWMON, 524 .altsetting = 1, 525 .ep_ctrl_r = 0x81, 526 .ep_ctrl_w = 0x01, 527 .ctrl_if = 1, 528 .ep_audio_r = 0x86, 529 .ep_audio_w = 0x02, 530 }, 531}; 532 533/* 534 Probe USB device. 535*/ 536static int podhd_probe(struct usb_interface *interface, 537 const struct usb_device_id *id) 538{ 539 return line6_probe(interface, id, "Line6-PODHD", 540 &podhd_properties_table[id->driver_info], 541 podhd_init, sizeof(struct usb_line6_podhd)); 542} 543 544static struct usb_driver podhd_driver = { 545 .name = KBUILD_MODNAME, 546 .probe = podhd_probe, 547 .disconnect = line6_disconnect, 548#ifdef CONFIG_PM 549 .suspend = line6_suspend, 550 .resume = line6_resume, 551 .reset_resume = line6_resume, 552#endif 553 .id_table = podhd_id_table, 554}; 555 556module_usb_driver(podhd_driver); 557 558MODULE_DESCRIPTION("Line 6 PODHD USB driver"); 559MODULE_LICENSE("GPL"); 560