1/** 2 * debugfs.c - Designware USB2 DRD controller debugfs 3 * 4 * Copyright (C) 2015 Intel Corporation 5 * Mian Yousaf Kaukab <yousaf.kaukab@intel.com> 6 * 7 * This program is free software: you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 of 9 * the License as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17#include <linux/spinlock.h> 18#include <linux/debugfs.h> 19#include <linux/seq_file.h> 20#include <linux/uaccess.h> 21 22#include "core.h" 23#include "debug.h" 24 25#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \ 26 IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) 27/** 28 * testmode_write - debugfs: change usb test mode 29 * @seq: The seq file to write to. 30 * @v: Unused parameter. 31 * 32 * This debugfs entry modify the current usb test mode. 33 */ 34static ssize_t testmode_write(struct file *file, const char __user *ubuf, size_t 35 count, loff_t *ppos) 36{ 37 struct seq_file *s = file->private_data; 38 struct dwc2_hsotg *hsotg = s->private; 39 unsigned long flags; 40 u32 testmode = 0; 41 char buf[32]; 42 43 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) 44 return -EFAULT; 45 46 if (!strncmp(buf, "test_j", 6)) 47 testmode = TEST_J; 48 else if (!strncmp(buf, "test_k", 6)) 49 testmode = TEST_K; 50 else if (!strncmp(buf, "test_se0_nak", 12)) 51 testmode = TEST_SE0_NAK; 52 else if (!strncmp(buf, "test_packet", 11)) 53 testmode = TEST_PACKET; 54 else if (!strncmp(buf, "test_force_enable", 17)) 55 testmode = TEST_FORCE_EN; 56 else 57 testmode = 0; 58 59 spin_lock_irqsave(&hsotg->lock, flags); 60 dwc2_hsotg_set_test_mode(hsotg, testmode); 61 spin_unlock_irqrestore(&hsotg->lock, flags); 62 return count; 63} 64 65/** 66 * testmode_show - debugfs: show usb test mode state 67 * @seq: The seq file to write to. 68 * @v: Unused parameter. 69 * 70 * This debugfs entry shows which usb test mode is currently enabled. 71 */ 72static int testmode_show(struct seq_file *s, void *unused) 73{ 74 struct dwc2_hsotg *hsotg = s->private; 75 unsigned long flags; 76 int dctl; 77 78 spin_lock_irqsave(&hsotg->lock, flags); 79 dctl = dwc2_readl(hsotg->regs + DCTL); 80 dctl &= DCTL_TSTCTL_MASK; 81 dctl >>= DCTL_TSTCTL_SHIFT; 82 spin_unlock_irqrestore(&hsotg->lock, flags); 83 84 switch (dctl) { 85 case 0: 86 seq_puts(s, "no test\n"); 87 break; 88 case TEST_J: 89 seq_puts(s, "test_j\n"); 90 break; 91 case TEST_K: 92 seq_puts(s, "test_k\n"); 93 break; 94 case TEST_SE0_NAK: 95 seq_puts(s, "test_se0_nak\n"); 96 break; 97 case TEST_PACKET: 98 seq_puts(s, "test_packet\n"); 99 break; 100 case TEST_FORCE_EN: 101 seq_puts(s, "test_force_enable\n"); 102 break; 103 default: 104 seq_printf(s, "UNKNOWN %d\n", dctl); 105 } 106 107 return 0; 108} 109 110static int testmode_open(struct inode *inode, struct file *file) 111{ 112 return single_open(file, testmode_show, inode->i_private); 113} 114 115static const struct file_operations testmode_fops = { 116 .owner = THIS_MODULE, 117 .open = testmode_open, 118 .write = testmode_write, 119 .read = seq_read, 120 .llseek = seq_lseek, 121 .release = single_release, 122}; 123 124/** 125 * state_show - debugfs: show overall driver and device state. 126 * @seq: The seq file to write to. 127 * @v: Unused parameter. 128 * 129 * This debugfs entry shows the overall state of the hardware and 130 * some general information about each of the endpoints available 131 * to the system. 132 */ 133static int state_show(struct seq_file *seq, void *v) 134{ 135 struct dwc2_hsotg *hsotg = seq->private; 136 void __iomem *regs = hsotg->regs; 137 int idx; 138 139 seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n", 140 dwc2_readl(regs + DCFG), 141 dwc2_readl(regs + DCTL), 142 dwc2_readl(regs + DSTS)); 143 144 seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n", 145 dwc2_readl(regs + DIEPMSK), dwc2_readl(regs + DOEPMSK)); 146 147 seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n", 148 dwc2_readl(regs + GINTMSK), 149 dwc2_readl(regs + GINTSTS)); 150 151 seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n", 152 dwc2_readl(regs + DAINTMSK), 153 dwc2_readl(regs + DAINT)); 154 155 seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n", 156 dwc2_readl(regs + GNPTXSTS), 157 dwc2_readl(regs + GRXSTSR)); 158 159 seq_puts(seq, "\nEndpoint status:\n"); 160 161 for (idx = 0; idx < hsotg->num_of_eps; idx++) { 162 u32 in, out; 163 164 in = dwc2_readl(regs + DIEPCTL(idx)); 165 out = dwc2_readl(regs + DOEPCTL(idx)); 166 167 seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x", 168 idx, in, out); 169 170 in = dwc2_readl(regs + DIEPTSIZ(idx)); 171 out = dwc2_readl(regs + DOEPTSIZ(idx)); 172 173 seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x", 174 in, out); 175 176 seq_puts(seq, "\n"); 177 } 178 179 return 0; 180} 181 182static int state_open(struct inode *inode, struct file *file) 183{ 184 return single_open(file, state_show, inode->i_private); 185} 186 187static const struct file_operations state_fops = { 188 .owner = THIS_MODULE, 189 .open = state_open, 190 .read = seq_read, 191 .llseek = seq_lseek, 192 .release = single_release, 193}; 194 195/** 196 * fifo_show - debugfs: show the fifo information 197 * @seq: The seq_file to write data to. 198 * @v: Unused parameter. 199 * 200 * Show the FIFO information for the overall fifo and all the 201 * periodic transmission FIFOs. 202 */ 203static int fifo_show(struct seq_file *seq, void *v) 204{ 205 struct dwc2_hsotg *hsotg = seq->private; 206 void __iomem *regs = hsotg->regs; 207 u32 val; 208 int idx; 209 210 seq_puts(seq, "Non-periodic FIFOs:\n"); 211 seq_printf(seq, "RXFIFO: Size %d\n", dwc2_readl(regs + GRXFSIZ)); 212 213 val = dwc2_readl(regs + GNPTXFSIZ); 214 seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n", 215 val >> FIFOSIZE_DEPTH_SHIFT, 216 val & FIFOSIZE_DEPTH_MASK); 217 218 seq_puts(seq, "\nPeriodic TXFIFOs:\n"); 219 220 for (idx = 1; idx < hsotg->num_of_eps; idx++) { 221 val = dwc2_readl(regs + DPTXFSIZN(idx)); 222 223 seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, 224 val >> FIFOSIZE_DEPTH_SHIFT, 225 val & FIFOSIZE_STARTADDR_MASK); 226 } 227 228 return 0; 229} 230 231static int fifo_open(struct inode *inode, struct file *file) 232{ 233 return single_open(file, fifo_show, inode->i_private); 234} 235 236static const struct file_operations fifo_fops = { 237 .owner = THIS_MODULE, 238 .open = fifo_open, 239 .read = seq_read, 240 .llseek = seq_lseek, 241 .release = single_release, 242}; 243 244static const char *decode_direction(int is_in) 245{ 246 return is_in ? "in" : "out"; 247} 248 249/** 250 * ep_show - debugfs: show the state of an endpoint. 251 * @seq: The seq_file to write data to. 252 * @v: Unused parameter. 253 * 254 * This debugfs entry shows the state of the given endpoint (one is 255 * registered for each available). 256 */ 257static int ep_show(struct seq_file *seq, void *v) 258{ 259 struct dwc2_hsotg_ep *ep = seq->private; 260 struct dwc2_hsotg *hsotg = ep->parent; 261 struct dwc2_hsotg_req *req; 262 void __iomem *regs = hsotg->regs; 263 int index = ep->index; 264 int show_limit = 15; 265 unsigned long flags; 266 267 seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n", 268 ep->index, ep->ep.name, decode_direction(ep->dir_in)); 269 270 /* first show the register state */ 271 272 seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n", 273 dwc2_readl(regs + DIEPCTL(index)), 274 dwc2_readl(regs + DOEPCTL(index))); 275 276 seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n", 277 dwc2_readl(regs + DIEPDMA(index)), 278 dwc2_readl(regs + DOEPDMA(index))); 279 280 seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n", 281 dwc2_readl(regs + DIEPINT(index)), 282 dwc2_readl(regs + DOEPINT(index))); 283 284 seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n", 285 dwc2_readl(regs + DIEPTSIZ(index)), 286 dwc2_readl(regs + DOEPTSIZ(index))); 287 288 seq_puts(seq, "\n"); 289 seq_printf(seq, "mps %d\n", ep->ep.maxpacket); 290 seq_printf(seq, "total_data=%ld\n", ep->total_data); 291 292 seq_printf(seq, "request list (%p,%p):\n", 293 ep->queue.next, ep->queue.prev); 294 295 spin_lock_irqsave(&hsotg->lock, flags); 296 297 list_for_each_entry(req, &ep->queue, queue) { 298 if (--show_limit < 0) { 299 seq_puts(seq, "not showing more requests...\n"); 300 break; 301 } 302 303 seq_printf(seq, "%c req %p: %d bytes @%p, ", 304 req == ep->req ? '*' : ' ', 305 req, req->req.length, req->req.buf); 306 seq_printf(seq, "%d done, res %d\n", 307 req->req.actual, req->req.status); 308 } 309 310 spin_unlock_irqrestore(&hsotg->lock, flags); 311 312 return 0; 313} 314 315static int ep_open(struct inode *inode, struct file *file) 316{ 317 return single_open(file, ep_show, inode->i_private); 318} 319 320static const struct file_operations ep_fops = { 321 .owner = THIS_MODULE, 322 .open = ep_open, 323 .read = seq_read, 324 .llseek = seq_lseek, 325 .release = single_release, 326}; 327 328/** 329 * dwc2_hsotg_create_debug - create debugfs directory and files 330 * @hsotg: The driver state 331 * 332 * Create the debugfs files to allow the user to get information 333 * about the state of the system. The directory name is created 334 * with the same name as the device itself, in case we end up 335 * with multiple blocks in future systems. 336 */ 337static void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) 338{ 339 struct dentry *root; 340 struct dentry *file; 341 unsigned epidx; 342 343 root = hsotg->debug_root; 344 345 /* create general state file */ 346 347 file = debugfs_create_file("state", S_IRUGO, root, hsotg, &state_fops); 348 if (IS_ERR(file)) 349 dev_err(hsotg->dev, "%s: failed to create state\n", __func__); 350 351 file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root, hsotg, 352 &testmode_fops); 353 if (IS_ERR(file)) 354 dev_err(hsotg->dev, "%s: failed to create testmode\n", 355 __func__); 356 357 file = debugfs_create_file("fifo", S_IRUGO, root, hsotg, &fifo_fops); 358 if (IS_ERR(file)) 359 dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__); 360 361 /* Create one file for each out endpoint */ 362 for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 363 struct dwc2_hsotg_ep *ep; 364 365 ep = hsotg->eps_out[epidx]; 366 if (ep) { 367 file = debugfs_create_file(ep->name, S_IRUGO, 368 root, ep, &ep_fops); 369 if (IS_ERR(file)) 370 dev_err(hsotg->dev, "failed to create %s debug file\n", 371 ep->name); 372 } 373 } 374 /* Create one file for each in endpoint. EP0 is handled with out eps */ 375 for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) { 376 struct dwc2_hsotg_ep *ep; 377 378 ep = hsotg->eps_in[epidx]; 379 if (ep) { 380 file = debugfs_create_file(ep->name, S_IRUGO, 381 root, ep, &ep_fops); 382 if (IS_ERR(file)) 383 dev_err(hsotg->dev, "failed to create %s debug file\n", 384 ep->name); 385 } 386 } 387} 388#else 389static inline void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) {} 390#endif 391 392/* dwc2_hsotg_delete_debug is removed as cleanup in done in dwc2_debugfs_exit */ 393 394#define dump_register(nm) \ 395{ \ 396 .name = #nm, \ 397 .offset = nm, \ 398} 399 400static const struct debugfs_reg32 dwc2_regs[] = { 401 /* 402 * Accessing registers like this can trigger mode mismatch interrupt. 403 * However, according to dwc2 databook, the register access, in this 404 * case, is completed on the processor bus but is ignored by the core 405 * and does not affect its operation. 406 */ 407 dump_register(GOTGCTL), 408 dump_register(GOTGINT), 409 dump_register(GAHBCFG), 410 dump_register(GUSBCFG), 411 dump_register(GRSTCTL), 412 dump_register(GINTSTS), 413 dump_register(GINTMSK), 414 dump_register(GRXSTSR), 415 dump_register(GRXSTSP), 416 dump_register(GRXFSIZ), 417 dump_register(GNPTXFSIZ), 418 dump_register(GNPTXSTS), 419 dump_register(GI2CCTL), 420 dump_register(GPVNDCTL), 421 dump_register(GGPIO), 422 dump_register(GUID), 423 dump_register(GSNPSID), 424 dump_register(GHWCFG1), 425 dump_register(GHWCFG2), 426 dump_register(GHWCFG3), 427 dump_register(GHWCFG4), 428 dump_register(GLPMCFG), 429 dump_register(GPWRDN), 430 dump_register(GDFIFOCFG), 431 dump_register(ADPCTL), 432 dump_register(HPTXFSIZ), 433 dump_register(DPTXFSIZN(1)), 434 dump_register(DPTXFSIZN(2)), 435 dump_register(DPTXFSIZN(3)), 436 dump_register(DPTXFSIZN(4)), 437 dump_register(DPTXFSIZN(5)), 438 dump_register(DPTXFSIZN(6)), 439 dump_register(DPTXFSIZN(7)), 440 dump_register(DPTXFSIZN(8)), 441 dump_register(DPTXFSIZN(9)), 442 dump_register(DPTXFSIZN(10)), 443 dump_register(DPTXFSIZN(11)), 444 dump_register(DPTXFSIZN(12)), 445 dump_register(DPTXFSIZN(13)), 446 dump_register(DPTXFSIZN(14)), 447 dump_register(DPTXFSIZN(15)), 448 dump_register(DCFG), 449 dump_register(DCTL), 450 dump_register(DSTS), 451 dump_register(DIEPMSK), 452 dump_register(DOEPMSK), 453 dump_register(DAINT), 454 dump_register(DAINTMSK), 455 dump_register(DTKNQR1), 456 dump_register(DTKNQR2), 457 dump_register(DTKNQR3), 458 dump_register(DTKNQR4), 459 dump_register(DVBUSDIS), 460 dump_register(DVBUSPULSE), 461 dump_register(DIEPCTL(0)), 462 dump_register(DIEPCTL(1)), 463 dump_register(DIEPCTL(2)), 464 dump_register(DIEPCTL(3)), 465 dump_register(DIEPCTL(4)), 466 dump_register(DIEPCTL(5)), 467 dump_register(DIEPCTL(6)), 468 dump_register(DIEPCTL(7)), 469 dump_register(DIEPCTL(8)), 470 dump_register(DIEPCTL(9)), 471 dump_register(DIEPCTL(10)), 472 dump_register(DIEPCTL(11)), 473 dump_register(DIEPCTL(12)), 474 dump_register(DIEPCTL(13)), 475 dump_register(DIEPCTL(14)), 476 dump_register(DIEPCTL(15)), 477 dump_register(DOEPCTL(0)), 478 dump_register(DOEPCTL(1)), 479 dump_register(DOEPCTL(2)), 480 dump_register(DOEPCTL(3)), 481 dump_register(DOEPCTL(4)), 482 dump_register(DOEPCTL(5)), 483 dump_register(DOEPCTL(6)), 484 dump_register(DOEPCTL(7)), 485 dump_register(DOEPCTL(8)), 486 dump_register(DOEPCTL(9)), 487 dump_register(DOEPCTL(10)), 488 dump_register(DOEPCTL(11)), 489 dump_register(DOEPCTL(12)), 490 dump_register(DOEPCTL(13)), 491 dump_register(DOEPCTL(14)), 492 dump_register(DOEPCTL(15)), 493 dump_register(DIEPINT(0)), 494 dump_register(DIEPINT(1)), 495 dump_register(DIEPINT(2)), 496 dump_register(DIEPINT(3)), 497 dump_register(DIEPINT(4)), 498 dump_register(DIEPINT(5)), 499 dump_register(DIEPINT(6)), 500 dump_register(DIEPINT(7)), 501 dump_register(DIEPINT(8)), 502 dump_register(DIEPINT(9)), 503 dump_register(DIEPINT(10)), 504 dump_register(DIEPINT(11)), 505 dump_register(DIEPINT(12)), 506 dump_register(DIEPINT(13)), 507 dump_register(DIEPINT(14)), 508 dump_register(DIEPINT(15)), 509 dump_register(DOEPINT(0)), 510 dump_register(DOEPINT(1)), 511 dump_register(DOEPINT(2)), 512 dump_register(DOEPINT(3)), 513 dump_register(DOEPINT(4)), 514 dump_register(DOEPINT(5)), 515 dump_register(DOEPINT(6)), 516 dump_register(DOEPINT(7)), 517 dump_register(DOEPINT(8)), 518 dump_register(DOEPINT(9)), 519 dump_register(DOEPINT(10)), 520 dump_register(DOEPINT(11)), 521 dump_register(DOEPINT(12)), 522 dump_register(DOEPINT(13)), 523 dump_register(DOEPINT(14)), 524 dump_register(DOEPINT(15)), 525 dump_register(DIEPTSIZ(0)), 526 dump_register(DIEPTSIZ(1)), 527 dump_register(DIEPTSIZ(2)), 528 dump_register(DIEPTSIZ(3)), 529 dump_register(DIEPTSIZ(4)), 530 dump_register(DIEPTSIZ(5)), 531 dump_register(DIEPTSIZ(6)), 532 dump_register(DIEPTSIZ(7)), 533 dump_register(DIEPTSIZ(8)), 534 dump_register(DIEPTSIZ(9)), 535 dump_register(DIEPTSIZ(10)), 536 dump_register(DIEPTSIZ(11)), 537 dump_register(DIEPTSIZ(12)), 538 dump_register(DIEPTSIZ(13)), 539 dump_register(DIEPTSIZ(14)), 540 dump_register(DIEPTSIZ(15)), 541 dump_register(DOEPTSIZ(0)), 542 dump_register(DOEPTSIZ(1)), 543 dump_register(DOEPTSIZ(2)), 544 dump_register(DOEPTSIZ(3)), 545 dump_register(DOEPTSIZ(4)), 546 dump_register(DOEPTSIZ(5)), 547 dump_register(DOEPTSIZ(6)), 548 dump_register(DOEPTSIZ(7)), 549 dump_register(DOEPTSIZ(8)), 550 dump_register(DOEPTSIZ(9)), 551 dump_register(DOEPTSIZ(10)), 552 dump_register(DOEPTSIZ(11)), 553 dump_register(DOEPTSIZ(12)), 554 dump_register(DOEPTSIZ(13)), 555 dump_register(DOEPTSIZ(14)), 556 dump_register(DOEPTSIZ(15)), 557 dump_register(DIEPDMA(0)), 558 dump_register(DIEPDMA(1)), 559 dump_register(DIEPDMA(2)), 560 dump_register(DIEPDMA(3)), 561 dump_register(DIEPDMA(4)), 562 dump_register(DIEPDMA(5)), 563 dump_register(DIEPDMA(6)), 564 dump_register(DIEPDMA(7)), 565 dump_register(DIEPDMA(8)), 566 dump_register(DIEPDMA(9)), 567 dump_register(DIEPDMA(10)), 568 dump_register(DIEPDMA(11)), 569 dump_register(DIEPDMA(12)), 570 dump_register(DIEPDMA(13)), 571 dump_register(DIEPDMA(14)), 572 dump_register(DIEPDMA(15)), 573 dump_register(DOEPDMA(0)), 574 dump_register(DOEPDMA(1)), 575 dump_register(DOEPDMA(2)), 576 dump_register(DOEPDMA(3)), 577 dump_register(DOEPDMA(4)), 578 dump_register(DOEPDMA(5)), 579 dump_register(DOEPDMA(6)), 580 dump_register(DOEPDMA(7)), 581 dump_register(DOEPDMA(8)), 582 dump_register(DOEPDMA(9)), 583 dump_register(DOEPDMA(10)), 584 dump_register(DOEPDMA(11)), 585 dump_register(DOEPDMA(12)), 586 dump_register(DOEPDMA(13)), 587 dump_register(DOEPDMA(14)), 588 dump_register(DOEPDMA(15)), 589 dump_register(DTXFSTS(0)), 590 dump_register(DTXFSTS(1)), 591 dump_register(DTXFSTS(2)), 592 dump_register(DTXFSTS(3)), 593 dump_register(DTXFSTS(4)), 594 dump_register(DTXFSTS(5)), 595 dump_register(DTXFSTS(6)), 596 dump_register(DTXFSTS(7)), 597 dump_register(DTXFSTS(8)), 598 dump_register(DTXFSTS(9)), 599 dump_register(DTXFSTS(10)), 600 dump_register(DTXFSTS(11)), 601 dump_register(DTXFSTS(12)), 602 dump_register(DTXFSTS(13)), 603 dump_register(DTXFSTS(14)), 604 dump_register(DTXFSTS(15)), 605 dump_register(PCGCTL), 606 dump_register(HCFG), 607 dump_register(HFIR), 608 dump_register(HFNUM), 609 dump_register(HPTXSTS), 610 dump_register(HAINT), 611 dump_register(HAINTMSK), 612 dump_register(HFLBADDR), 613 dump_register(HPRT0), 614 dump_register(HCCHAR(0)), 615 dump_register(HCCHAR(1)), 616 dump_register(HCCHAR(2)), 617 dump_register(HCCHAR(3)), 618 dump_register(HCCHAR(4)), 619 dump_register(HCCHAR(5)), 620 dump_register(HCCHAR(6)), 621 dump_register(HCCHAR(7)), 622 dump_register(HCCHAR(8)), 623 dump_register(HCCHAR(9)), 624 dump_register(HCCHAR(10)), 625 dump_register(HCCHAR(11)), 626 dump_register(HCCHAR(12)), 627 dump_register(HCCHAR(13)), 628 dump_register(HCCHAR(14)), 629 dump_register(HCCHAR(15)), 630 dump_register(HCSPLT(0)), 631 dump_register(HCSPLT(1)), 632 dump_register(HCSPLT(2)), 633 dump_register(HCSPLT(3)), 634 dump_register(HCSPLT(4)), 635 dump_register(HCSPLT(5)), 636 dump_register(HCSPLT(6)), 637 dump_register(HCSPLT(7)), 638 dump_register(HCSPLT(8)), 639 dump_register(HCSPLT(9)), 640 dump_register(HCSPLT(10)), 641 dump_register(HCSPLT(11)), 642 dump_register(HCSPLT(12)), 643 dump_register(HCSPLT(13)), 644 dump_register(HCSPLT(14)), 645 dump_register(HCSPLT(15)), 646 dump_register(HCINT(0)), 647 dump_register(HCINT(1)), 648 dump_register(HCINT(2)), 649 dump_register(HCINT(3)), 650 dump_register(HCINT(4)), 651 dump_register(HCINT(5)), 652 dump_register(HCINT(6)), 653 dump_register(HCINT(7)), 654 dump_register(HCINT(8)), 655 dump_register(HCINT(9)), 656 dump_register(HCINT(10)), 657 dump_register(HCINT(11)), 658 dump_register(HCINT(12)), 659 dump_register(HCINT(13)), 660 dump_register(HCINT(14)), 661 dump_register(HCINT(15)), 662 dump_register(HCINTMSK(0)), 663 dump_register(HCINTMSK(1)), 664 dump_register(HCINTMSK(2)), 665 dump_register(HCINTMSK(3)), 666 dump_register(HCINTMSK(4)), 667 dump_register(HCINTMSK(5)), 668 dump_register(HCINTMSK(6)), 669 dump_register(HCINTMSK(7)), 670 dump_register(HCINTMSK(8)), 671 dump_register(HCINTMSK(9)), 672 dump_register(HCINTMSK(10)), 673 dump_register(HCINTMSK(11)), 674 dump_register(HCINTMSK(12)), 675 dump_register(HCINTMSK(13)), 676 dump_register(HCINTMSK(14)), 677 dump_register(HCINTMSK(15)), 678 dump_register(HCTSIZ(0)), 679 dump_register(HCTSIZ(1)), 680 dump_register(HCTSIZ(2)), 681 dump_register(HCTSIZ(3)), 682 dump_register(HCTSIZ(4)), 683 dump_register(HCTSIZ(5)), 684 dump_register(HCTSIZ(6)), 685 dump_register(HCTSIZ(7)), 686 dump_register(HCTSIZ(8)), 687 dump_register(HCTSIZ(9)), 688 dump_register(HCTSIZ(10)), 689 dump_register(HCTSIZ(11)), 690 dump_register(HCTSIZ(12)), 691 dump_register(HCTSIZ(13)), 692 dump_register(HCTSIZ(14)), 693 dump_register(HCTSIZ(15)), 694 dump_register(HCDMA(0)), 695 dump_register(HCDMA(1)), 696 dump_register(HCDMA(2)), 697 dump_register(HCDMA(3)), 698 dump_register(HCDMA(4)), 699 dump_register(HCDMA(5)), 700 dump_register(HCDMA(6)), 701 dump_register(HCDMA(7)), 702 dump_register(HCDMA(8)), 703 dump_register(HCDMA(9)), 704 dump_register(HCDMA(10)), 705 dump_register(HCDMA(11)), 706 dump_register(HCDMA(12)), 707 dump_register(HCDMA(13)), 708 dump_register(HCDMA(14)), 709 dump_register(HCDMA(15)), 710 dump_register(HCDMAB(0)), 711 dump_register(HCDMAB(1)), 712 dump_register(HCDMAB(2)), 713 dump_register(HCDMAB(3)), 714 dump_register(HCDMAB(4)), 715 dump_register(HCDMAB(5)), 716 dump_register(HCDMAB(6)), 717 dump_register(HCDMAB(7)), 718 dump_register(HCDMAB(8)), 719 dump_register(HCDMAB(9)), 720 dump_register(HCDMAB(10)), 721 dump_register(HCDMAB(11)), 722 dump_register(HCDMAB(12)), 723 dump_register(HCDMAB(13)), 724 dump_register(HCDMAB(14)), 725 dump_register(HCDMAB(15)), 726}; 727 728int dwc2_debugfs_init(struct dwc2_hsotg *hsotg) 729{ 730 int ret; 731 struct dentry *file; 732 733 hsotg->debug_root = debugfs_create_dir(dev_name(hsotg->dev), NULL); 734 if (!hsotg->debug_root) { 735 ret = -ENOMEM; 736 goto err0; 737 } 738 739 /* Add gadget debugfs nodes */ 740 dwc2_hsotg_create_debug(hsotg); 741 742 hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset), 743 GFP_KERNEL); 744 if (!hsotg->regset) { 745 ret = -ENOMEM; 746 goto err1; 747 } 748 749 hsotg->regset->regs = dwc2_regs; 750 hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs); 751 hsotg->regset->base = hsotg->regs; 752 753 file = debugfs_create_regset32("regdump", S_IRUGO, hsotg->debug_root, 754 hsotg->regset); 755 if (!file) { 756 ret = -ENOMEM; 757 goto err1; 758 } 759 760 return 0; 761err1: 762 debugfs_remove_recursive(hsotg->debug_root); 763err0: 764 return ret; 765} 766 767void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg) 768{ 769 debugfs_remove_recursive(hsotg->debug_root); 770 hsotg->debug_root = NULL; 771} 772