2 * debugfs.c - DesignWare USB3 DRD Controller DebugFS file
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 of
11 * the License as published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
19 #include <linux/kernel.h>
20 #include <linux/slab.h>
21 #include <linux/ptrace.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/debugfs.h>
25 #include <linux/seq_file.h>
26 #include <linux/delay.h>
27 #include <linux/uaccess.h>
29 #include <linux/usb/ch9.h>
36 #define dump_register(nm) \
38 .name = __stringify(nm), \
39 .offset = DWC3_ ##nm - DWC3_GLOBALS_REGS_START, \
42 static const struct debugfs_reg32 dwc3_regs[] = {
43 dump_register(GSBUSCFG0),
44 dump_register(GSBUSCFG1),
45 dump_register(GTXTHRCFG),
46 dump_register(GRXTHRCFG),
48 dump_register(GEVTEN),
50 dump_register(GUCTL1),
51 dump_register(GSNPSID),
55 dump_register(GBUSERRADDR0),
56 dump_register(GBUSERRADDR1),
57 dump_register(GPRTBIMAP0),
58 dump_register(GPRTBIMAP1),
59 dump_register(GHWPARAMS0),
60 dump_register(GHWPARAMS1),
61 dump_register(GHWPARAMS2),
62 dump_register(GHWPARAMS3),
63 dump_register(GHWPARAMS4),
64 dump_register(GHWPARAMS5),
65 dump_register(GHWPARAMS6),
66 dump_register(GHWPARAMS7),
67 dump_register(GDBGFIFOSPACE),
68 dump_register(GDBGLTSSM),
69 dump_register(GPRTBIMAP_HS0),
70 dump_register(GPRTBIMAP_HS1),
71 dump_register(GPRTBIMAP_FS0),
72 dump_register(GPRTBIMAP_FS1),
74 dump_register(GUSB2PHYCFG(0)),
75 dump_register(GUSB2PHYCFG(1)),
76 dump_register(GUSB2PHYCFG(2)),
77 dump_register(GUSB2PHYCFG(3)),
78 dump_register(GUSB2PHYCFG(4)),
79 dump_register(GUSB2PHYCFG(5)),
80 dump_register(GUSB2PHYCFG(6)),
81 dump_register(GUSB2PHYCFG(7)),
82 dump_register(GUSB2PHYCFG(8)),
83 dump_register(GUSB2PHYCFG(9)),
84 dump_register(GUSB2PHYCFG(10)),
85 dump_register(GUSB2PHYCFG(11)),
86 dump_register(GUSB2PHYCFG(12)),
87 dump_register(GUSB2PHYCFG(13)),
88 dump_register(GUSB2PHYCFG(14)),
89 dump_register(GUSB2PHYCFG(15)),
91 dump_register(GUSB2I2CCTL(0)),
92 dump_register(GUSB2I2CCTL(1)),
93 dump_register(GUSB2I2CCTL(2)),
94 dump_register(GUSB2I2CCTL(3)),
95 dump_register(GUSB2I2CCTL(4)),
96 dump_register(GUSB2I2CCTL(5)),
97 dump_register(GUSB2I2CCTL(6)),
98 dump_register(GUSB2I2CCTL(7)),
99 dump_register(GUSB2I2CCTL(8)),
100 dump_register(GUSB2I2CCTL(9)),
101 dump_register(GUSB2I2CCTL(10)),
102 dump_register(GUSB2I2CCTL(11)),
103 dump_register(GUSB2I2CCTL(12)),
104 dump_register(GUSB2I2CCTL(13)),
105 dump_register(GUSB2I2CCTL(14)),
106 dump_register(GUSB2I2CCTL(15)),
108 dump_register(GUSB2PHYACC(0)),
109 dump_register(GUSB2PHYACC(1)),
110 dump_register(GUSB2PHYACC(2)),
111 dump_register(GUSB2PHYACC(3)),
112 dump_register(GUSB2PHYACC(4)),
113 dump_register(GUSB2PHYACC(5)),
114 dump_register(GUSB2PHYACC(6)),
115 dump_register(GUSB2PHYACC(7)),
116 dump_register(GUSB2PHYACC(8)),
117 dump_register(GUSB2PHYACC(9)),
118 dump_register(GUSB2PHYACC(10)),
119 dump_register(GUSB2PHYACC(11)),
120 dump_register(GUSB2PHYACC(12)),
121 dump_register(GUSB2PHYACC(13)),
122 dump_register(GUSB2PHYACC(14)),
123 dump_register(GUSB2PHYACC(15)),
125 dump_register(GUSB3PIPECTL(0)),
126 dump_register(GUSB3PIPECTL(1)),
127 dump_register(GUSB3PIPECTL(2)),
128 dump_register(GUSB3PIPECTL(3)),
129 dump_register(GUSB3PIPECTL(4)),
130 dump_register(GUSB3PIPECTL(5)),
131 dump_register(GUSB3PIPECTL(6)),
132 dump_register(GUSB3PIPECTL(7)),
133 dump_register(GUSB3PIPECTL(8)),
134 dump_register(GUSB3PIPECTL(9)),
135 dump_register(GUSB3PIPECTL(10)),
136 dump_register(GUSB3PIPECTL(11)),
137 dump_register(GUSB3PIPECTL(12)),
138 dump_register(GUSB3PIPECTL(13)),
139 dump_register(GUSB3PIPECTL(14)),
140 dump_register(GUSB3PIPECTL(15)),
142 dump_register(GTXFIFOSIZ(0)),
143 dump_register(GTXFIFOSIZ(1)),
144 dump_register(GTXFIFOSIZ(2)),
145 dump_register(GTXFIFOSIZ(3)),
146 dump_register(GTXFIFOSIZ(4)),
147 dump_register(GTXFIFOSIZ(5)),
148 dump_register(GTXFIFOSIZ(6)),
149 dump_register(GTXFIFOSIZ(7)),
150 dump_register(GTXFIFOSIZ(8)),
151 dump_register(GTXFIFOSIZ(9)),
152 dump_register(GTXFIFOSIZ(10)),
153 dump_register(GTXFIFOSIZ(11)),
154 dump_register(GTXFIFOSIZ(12)),
155 dump_register(GTXFIFOSIZ(13)),
156 dump_register(GTXFIFOSIZ(14)),
157 dump_register(GTXFIFOSIZ(15)),
158 dump_register(GTXFIFOSIZ(16)),
159 dump_register(GTXFIFOSIZ(17)),
160 dump_register(GTXFIFOSIZ(18)),
161 dump_register(GTXFIFOSIZ(19)),
162 dump_register(GTXFIFOSIZ(20)),
163 dump_register(GTXFIFOSIZ(21)),
164 dump_register(GTXFIFOSIZ(22)),
165 dump_register(GTXFIFOSIZ(23)),
166 dump_register(GTXFIFOSIZ(24)),
167 dump_register(GTXFIFOSIZ(25)),
168 dump_register(GTXFIFOSIZ(26)),
169 dump_register(GTXFIFOSIZ(27)),
170 dump_register(GTXFIFOSIZ(28)),
171 dump_register(GTXFIFOSIZ(29)),
172 dump_register(GTXFIFOSIZ(30)),
173 dump_register(GTXFIFOSIZ(31)),
175 dump_register(GRXFIFOSIZ(0)),
176 dump_register(GRXFIFOSIZ(1)),
177 dump_register(GRXFIFOSIZ(2)),
178 dump_register(GRXFIFOSIZ(3)),
179 dump_register(GRXFIFOSIZ(4)),
180 dump_register(GRXFIFOSIZ(5)),
181 dump_register(GRXFIFOSIZ(6)),
182 dump_register(GRXFIFOSIZ(7)),
183 dump_register(GRXFIFOSIZ(8)),
184 dump_register(GRXFIFOSIZ(9)),
185 dump_register(GRXFIFOSIZ(10)),
186 dump_register(GRXFIFOSIZ(11)),
187 dump_register(GRXFIFOSIZ(12)),
188 dump_register(GRXFIFOSIZ(13)),
189 dump_register(GRXFIFOSIZ(14)),
190 dump_register(GRXFIFOSIZ(15)),
191 dump_register(GRXFIFOSIZ(16)),
192 dump_register(GRXFIFOSIZ(17)),
193 dump_register(GRXFIFOSIZ(18)),
194 dump_register(GRXFIFOSIZ(19)),
195 dump_register(GRXFIFOSIZ(20)),
196 dump_register(GRXFIFOSIZ(21)),
197 dump_register(GRXFIFOSIZ(22)),
198 dump_register(GRXFIFOSIZ(23)),
199 dump_register(GRXFIFOSIZ(24)),
200 dump_register(GRXFIFOSIZ(25)),
201 dump_register(GRXFIFOSIZ(26)),
202 dump_register(GRXFIFOSIZ(27)),
203 dump_register(GRXFIFOSIZ(28)),
204 dump_register(GRXFIFOSIZ(29)),
205 dump_register(GRXFIFOSIZ(30)),
206 dump_register(GRXFIFOSIZ(31)),
208 dump_register(GEVNTADRLO(0)),
209 dump_register(GEVNTADRHI(0)),
210 dump_register(GEVNTSIZ(0)),
211 dump_register(GEVNTCOUNT(0)),
213 dump_register(GHWPARAMS8),
216 dump_register(DEVTEN),
218 dump_register(DGCMDPAR),
219 dump_register(DGCMD),
220 dump_register(DALEPENA),
222 dump_register(DEPCMDPAR2(0)),
223 dump_register(DEPCMDPAR2(1)),
224 dump_register(DEPCMDPAR2(2)),
225 dump_register(DEPCMDPAR2(3)),
226 dump_register(DEPCMDPAR2(4)),
227 dump_register(DEPCMDPAR2(5)),
228 dump_register(DEPCMDPAR2(6)),
229 dump_register(DEPCMDPAR2(7)),
230 dump_register(DEPCMDPAR2(8)),
231 dump_register(DEPCMDPAR2(9)),
232 dump_register(DEPCMDPAR2(10)),
233 dump_register(DEPCMDPAR2(11)),
234 dump_register(DEPCMDPAR2(12)),
235 dump_register(DEPCMDPAR2(13)),
236 dump_register(DEPCMDPAR2(14)),
237 dump_register(DEPCMDPAR2(15)),
238 dump_register(DEPCMDPAR2(16)),
239 dump_register(DEPCMDPAR2(17)),
240 dump_register(DEPCMDPAR2(18)),
241 dump_register(DEPCMDPAR2(19)),
242 dump_register(DEPCMDPAR2(20)),
243 dump_register(DEPCMDPAR2(21)),
244 dump_register(DEPCMDPAR2(22)),
245 dump_register(DEPCMDPAR2(23)),
246 dump_register(DEPCMDPAR2(24)),
247 dump_register(DEPCMDPAR2(25)),
248 dump_register(DEPCMDPAR2(26)),
249 dump_register(DEPCMDPAR2(27)),
250 dump_register(DEPCMDPAR2(28)),
251 dump_register(DEPCMDPAR2(29)),
252 dump_register(DEPCMDPAR2(30)),
253 dump_register(DEPCMDPAR2(31)),
255 dump_register(DEPCMDPAR1(0)),
256 dump_register(DEPCMDPAR1(1)),
257 dump_register(DEPCMDPAR1(2)),
258 dump_register(DEPCMDPAR1(3)),
259 dump_register(DEPCMDPAR1(4)),
260 dump_register(DEPCMDPAR1(5)),
261 dump_register(DEPCMDPAR1(6)),
262 dump_register(DEPCMDPAR1(7)),
263 dump_register(DEPCMDPAR1(8)),
264 dump_register(DEPCMDPAR1(9)),
265 dump_register(DEPCMDPAR1(10)),
266 dump_register(DEPCMDPAR1(11)),
267 dump_register(DEPCMDPAR1(12)),
268 dump_register(DEPCMDPAR1(13)),
269 dump_register(DEPCMDPAR1(14)),
270 dump_register(DEPCMDPAR1(15)),
271 dump_register(DEPCMDPAR1(16)),
272 dump_register(DEPCMDPAR1(17)),
273 dump_register(DEPCMDPAR1(18)),
274 dump_register(DEPCMDPAR1(19)),
275 dump_register(DEPCMDPAR1(20)),
276 dump_register(DEPCMDPAR1(21)),
277 dump_register(DEPCMDPAR1(22)),
278 dump_register(DEPCMDPAR1(23)),
279 dump_register(DEPCMDPAR1(24)),
280 dump_register(DEPCMDPAR1(25)),
281 dump_register(DEPCMDPAR1(26)),
282 dump_register(DEPCMDPAR1(27)),
283 dump_register(DEPCMDPAR1(28)),
284 dump_register(DEPCMDPAR1(29)),
285 dump_register(DEPCMDPAR1(30)),
286 dump_register(DEPCMDPAR1(31)),
288 dump_register(DEPCMDPAR0(0)),
289 dump_register(DEPCMDPAR0(1)),
290 dump_register(DEPCMDPAR0(2)),
291 dump_register(DEPCMDPAR0(3)),
292 dump_register(DEPCMDPAR0(4)),
293 dump_register(DEPCMDPAR0(5)),
294 dump_register(DEPCMDPAR0(6)),
295 dump_register(DEPCMDPAR0(7)),
296 dump_register(DEPCMDPAR0(8)),
297 dump_register(DEPCMDPAR0(9)),
298 dump_register(DEPCMDPAR0(10)),
299 dump_register(DEPCMDPAR0(11)),
300 dump_register(DEPCMDPAR0(12)),
301 dump_register(DEPCMDPAR0(13)),
302 dump_register(DEPCMDPAR0(14)),
303 dump_register(DEPCMDPAR0(15)),
304 dump_register(DEPCMDPAR0(16)),
305 dump_register(DEPCMDPAR0(17)),
306 dump_register(DEPCMDPAR0(18)),
307 dump_register(DEPCMDPAR0(19)),
308 dump_register(DEPCMDPAR0(20)),
309 dump_register(DEPCMDPAR0(21)),
310 dump_register(DEPCMDPAR0(22)),
311 dump_register(DEPCMDPAR0(23)),
312 dump_register(DEPCMDPAR0(24)),
313 dump_register(DEPCMDPAR0(25)),
314 dump_register(DEPCMDPAR0(26)),
315 dump_register(DEPCMDPAR0(27)),
316 dump_register(DEPCMDPAR0(28)),
317 dump_register(DEPCMDPAR0(29)),
318 dump_register(DEPCMDPAR0(30)),
319 dump_register(DEPCMDPAR0(31)),
321 dump_register(DEPCMD(0)),
322 dump_register(DEPCMD(1)),
323 dump_register(DEPCMD(2)),
324 dump_register(DEPCMD(3)),
325 dump_register(DEPCMD(4)),
326 dump_register(DEPCMD(5)),
327 dump_register(DEPCMD(6)),
328 dump_register(DEPCMD(7)),
329 dump_register(DEPCMD(8)),
330 dump_register(DEPCMD(9)),
331 dump_register(DEPCMD(10)),
332 dump_register(DEPCMD(11)),
333 dump_register(DEPCMD(12)),
334 dump_register(DEPCMD(13)),
335 dump_register(DEPCMD(14)),
336 dump_register(DEPCMD(15)),
337 dump_register(DEPCMD(16)),
338 dump_register(DEPCMD(17)),
339 dump_register(DEPCMD(18)),
340 dump_register(DEPCMD(19)),
341 dump_register(DEPCMD(20)),
342 dump_register(DEPCMD(21)),
343 dump_register(DEPCMD(22)),
344 dump_register(DEPCMD(23)),
345 dump_register(DEPCMD(24)),
346 dump_register(DEPCMD(25)),
347 dump_register(DEPCMD(26)),
348 dump_register(DEPCMD(27)),
349 dump_register(DEPCMD(28)),
350 dump_register(DEPCMD(29)),
351 dump_register(DEPCMD(30)),
352 dump_register(DEPCMD(31)),
357 dump_register(OEVTEN),
361 static int dwc3_mode_show(struct seq_file *s, void *unused)
363 struct dwc3 *dwc = s->private;
367 spin_lock_irqsave(&dwc->lock, flags);
368 reg = dwc3_readl(dwc->regs, DWC3_GCTL);
369 spin_unlock_irqrestore(&dwc->lock, flags);
371 switch (DWC3_GCTL_PRTCAP(reg)) {
372 case DWC3_GCTL_PRTCAP_HOST:
373 seq_printf(s, "host\n");
375 case DWC3_GCTL_PRTCAP_DEVICE:
376 seq_printf(s, "device\n");
378 case DWC3_GCTL_PRTCAP_OTG:
379 seq_printf(s, "OTG\n");
382 seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
388 static int dwc3_mode_open(struct inode *inode, struct file *file)
390 return single_open(file, dwc3_mode_show, inode->i_private);
393 static ssize_t dwc3_mode_write(struct file *file,
394 const char __user *ubuf, size_t count, loff_t *ppos)
396 struct seq_file *s = file->private_data;
397 struct dwc3 *dwc = s->private;
402 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
405 if (!strncmp(buf, "host", 4))
406 mode |= DWC3_GCTL_PRTCAP_HOST;
408 if (!strncmp(buf, "device", 6))
409 mode |= DWC3_GCTL_PRTCAP_DEVICE;
411 if (!strncmp(buf, "otg", 3))
412 mode |= DWC3_GCTL_PRTCAP_OTG;
415 spin_lock_irqsave(&dwc->lock, flags);
416 dwc3_set_mode(dwc, mode);
417 spin_unlock_irqrestore(&dwc->lock, flags);
422 static const struct file_operations dwc3_mode_fops = {
423 .open = dwc3_mode_open,
424 .write = dwc3_mode_write,
427 .release = single_release,
430 static int dwc3_testmode_show(struct seq_file *s, void *unused)
432 struct dwc3 *dwc = s->private;
436 spin_lock_irqsave(&dwc->lock, flags);
437 reg = dwc3_readl(dwc->regs, DWC3_DCTL);
438 reg &= DWC3_DCTL_TSTCTRL_MASK;
440 spin_unlock_irqrestore(&dwc->lock, flags);
444 seq_printf(s, "no test\n");
447 seq_printf(s, "test_j\n");
450 seq_printf(s, "test_k\n");
453 seq_printf(s, "test_se0_nak\n");
456 seq_printf(s, "test_packet\n");
459 seq_printf(s, "test_force_enable\n");
462 seq_printf(s, "UNKNOWN %d\n", reg);
468 static int dwc3_testmode_open(struct inode *inode, struct file *file)
470 return single_open(file, dwc3_testmode_show, inode->i_private);
473 static ssize_t dwc3_testmode_write(struct file *file,
474 const char __user *ubuf, size_t count, loff_t *ppos)
476 struct seq_file *s = file->private_data;
477 struct dwc3 *dwc = s->private;
482 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
485 if (!strncmp(buf, "test_j", 6))
487 else if (!strncmp(buf, "test_k", 6))
489 else if (!strncmp(buf, "test_se0_nak", 12))
490 testmode = TEST_SE0_NAK;
491 else if (!strncmp(buf, "test_packet", 11))
492 testmode = TEST_PACKET;
493 else if (!strncmp(buf, "test_force_enable", 17))
494 testmode = TEST_FORCE_EN;
498 spin_lock_irqsave(&dwc->lock, flags);
499 dwc3_gadget_set_test_mode(dwc, testmode);
500 spin_unlock_irqrestore(&dwc->lock, flags);
505 static const struct file_operations dwc3_testmode_fops = {
506 .open = dwc3_testmode_open,
507 .write = dwc3_testmode_write,
510 .release = single_release,
513 static int dwc3_link_state_show(struct seq_file *s, void *unused)
515 struct dwc3 *dwc = s->private;
517 enum dwc3_link_state state;
520 spin_lock_irqsave(&dwc->lock, flags);
521 reg = dwc3_readl(dwc->regs, DWC3_DSTS);
522 state = DWC3_DSTS_USBLNKST(reg);
523 spin_unlock_irqrestore(&dwc->lock, flags);
526 case DWC3_LINK_STATE_U0:
527 seq_printf(s, "U0\n");
529 case DWC3_LINK_STATE_U1:
530 seq_printf(s, "U1\n");
532 case DWC3_LINK_STATE_U2:
533 seq_printf(s, "U2\n");
535 case DWC3_LINK_STATE_U3:
536 seq_printf(s, "U3\n");
538 case DWC3_LINK_STATE_SS_DIS:
539 seq_printf(s, "SS.Disabled\n");
541 case DWC3_LINK_STATE_RX_DET:
542 seq_printf(s, "Rx.Detect\n");
544 case DWC3_LINK_STATE_SS_INACT:
545 seq_printf(s, "SS.Inactive\n");
547 case DWC3_LINK_STATE_POLL:
548 seq_printf(s, "Poll\n");
550 case DWC3_LINK_STATE_RECOV:
551 seq_printf(s, "Recovery\n");
553 case DWC3_LINK_STATE_HRESET:
554 seq_printf(s, "HRESET\n");
556 case DWC3_LINK_STATE_CMPLY:
557 seq_printf(s, "Compliance\n");
559 case DWC3_LINK_STATE_LPBK:
560 seq_printf(s, "Loopback\n");
562 case DWC3_LINK_STATE_RESET:
563 seq_printf(s, "Reset\n");
565 case DWC3_LINK_STATE_RESUME:
566 seq_printf(s, "Resume\n");
569 seq_printf(s, "UNKNOWN %d\n", state);
575 static int dwc3_link_state_open(struct inode *inode, struct file *file)
577 return single_open(file, dwc3_link_state_show, inode->i_private);
580 static ssize_t dwc3_link_state_write(struct file *file,
581 const char __user *ubuf, size_t count, loff_t *ppos)
583 struct seq_file *s = file->private_data;
584 struct dwc3 *dwc = s->private;
586 enum dwc3_link_state state = 0;
589 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
592 if (!strncmp(buf, "SS.Disabled", 11))
593 state = DWC3_LINK_STATE_SS_DIS;
594 else if (!strncmp(buf, "Rx.Detect", 9))
595 state = DWC3_LINK_STATE_RX_DET;
596 else if (!strncmp(buf, "SS.Inactive", 11))
597 state = DWC3_LINK_STATE_SS_INACT;
598 else if (!strncmp(buf, "Recovery", 8))
599 state = DWC3_LINK_STATE_RECOV;
600 else if (!strncmp(buf, "Compliance", 10))
601 state = DWC3_LINK_STATE_CMPLY;
602 else if (!strncmp(buf, "Loopback", 8))
603 state = DWC3_LINK_STATE_LPBK;
607 spin_lock_irqsave(&dwc->lock, flags);
608 dwc3_gadget_set_link_state(dwc, state);
609 spin_unlock_irqrestore(&dwc->lock, flags);
614 static const struct file_operations dwc3_link_state_fops = {
615 .open = dwc3_link_state_open,
616 .write = dwc3_link_state_write,
619 .release = single_release,
622 int dwc3_debugfs_init(struct dwc3 *dwc)
628 root = debugfs_create_dir(dev_name(dwc->dev), NULL);
636 dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
642 dwc->regset->regs = dwc3_regs;
643 dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
644 dwc->regset->base = dwc->regs;
646 file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
652 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
653 file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
654 dwc, &dwc3_mode_fops);
661 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
662 IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
663 file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
664 dwc, &dwc3_testmode_fops);
670 file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root,
671 dwc, &dwc3_link_state_fops);
681 debugfs_remove_recursive(root);
687 void dwc3_debugfs_exit(struct dwc3 *dwc)
689 debugfs_remove_recursive(dwc->root);