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72246da4 FB |
1 | /** |
2 | * debugfs.c - DesignWare USB3 DRD Controller DebugFS file | |
3 | * | |
4 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com | |
72246da4 FB |
5 | * |
6 | * Authors: Felipe Balbi <balbi@ti.com>, | |
7 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
8 | * | |
5945f789 FB |
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. | |
72246da4 | 12 | * |
5945f789 FB |
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. | |
72246da4 FB |
17 | */ |
18 | ||
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> | |
25b8ff68 | 27 | #include <linux/uaccess.h> |
72246da4 | 28 | |
080d921f FB |
29 | #include <linux/usb/ch9.h> |
30 | ||
72246da4 FB |
31 | #include "core.h" |
32 | #include "gadget.h" | |
33 | #include "io.h" | |
8becf270 | 34 | #include "debug.h" |
72246da4 | 35 | |
72246da4 FB |
36 | #define dump_register(nm) \ |
37 | { \ | |
38 | .name = __stringify(nm), \ | |
1604c1e7 | 39 | .offset = DWC3_ ##nm - DWC3_GLOBALS_REGS_START, \ |
72246da4 FB |
40 | } |
41 | ||
4ec0ddb1 | 42 | static const struct debugfs_reg32 dwc3_regs[] = { |
72246da4 FB |
43 | dump_register(GSBUSCFG0), |
44 | dump_register(GSBUSCFG1), | |
45 | dump_register(GTXTHRCFG), | |
46 | dump_register(GRXTHRCFG), | |
47 | dump_register(GCTL), | |
48 | dump_register(GEVTEN), | |
49 | dump_register(GSTS), | |
50 | dump_register(GSNPSID), | |
51 | dump_register(GGPIO), | |
52 | dump_register(GUID), | |
53 | dump_register(GUCTL), | |
54 | dump_register(GBUSERRADDR0), | |
55 | dump_register(GBUSERRADDR1), | |
56 | dump_register(GPRTBIMAP0), | |
57 | dump_register(GPRTBIMAP1), | |
58 | dump_register(GHWPARAMS0), | |
59 | dump_register(GHWPARAMS1), | |
60 | dump_register(GHWPARAMS2), | |
61 | dump_register(GHWPARAMS3), | |
62 | dump_register(GHWPARAMS4), | |
63 | dump_register(GHWPARAMS5), | |
64 | dump_register(GHWPARAMS6), | |
65 | dump_register(GHWPARAMS7), | |
66 | dump_register(GDBGFIFOSPACE), | |
67 | dump_register(GDBGLTSSM), | |
68 | dump_register(GPRTBIMAP_HS0), | |
69 | dump_register(GPRTBIMAP_HS1), | |
70 | dump_register(GPRTBIMAP_FS0), | |
71 | dump_register(GPRTBIMAP_FS1), | |
72 | ||
73 | dump_register(GUSB2PHYCFG(0)), | |
74 | dump_register(GUSB2PHYCFG(1)), | |
75 | dump_register(GUSB2PHYCFG(2)), | |
76 | dump_register(GUSB2PHYCFG(3)), | |
77 | dump_register(GUSB2PHYCFG(4)), | |
78 | dump_register(GUSB2PHYCFG(5)), | |
79 | dump_register(GUSB2PHYCFG(6)), | |
80 | dump_register(GUSB2PHYCFG(7)), | |
81 | dump_register(GUSB2PHYCFG(8)), | |
82 | dump_register(GUSB2PHYCFG(9)), | |
83 | dump_register(GUSB2PHYCFG(10)), | |
84 | dump_register(GUSB2PHYCFG(11)), | |
85 | dump_register(GUSB2PHYCFG(12)), | |
86 | dump_register(GUSB2PHYCFG(13)), | |
87 | dump_register(GUSB2PHYCFG(14)), | |
88 | dump_register(GUSB2PHYCFG(15)), | |
89 | ||
90 | dump_register(GUSB2I2CCTL(0)), | |
91 | dump_register(GUSB2I2CCTL(1)), | |
92 | dump_register(GUSB2I2CCTL(2)), | |
93 | dump_register(GUSB2I2CCTL(3)), | |
94 | dump_register(GUSB2I2CCTL(4)), | |
95 | dump_register(GUSB2I2CCTL(5)), | |
96 | dump_register(GUSB2I2CCTL(6)), | |
97 | dump_register(GUSB2I2CCTL(7)), | |
98 | dump_register(GUSB2I2CCTL(8)), | |
99 | dump_register(GUSB2I2CCTL(9)), | |
100 | dump_register(GUSB2I2CCTL(10)), | |
101 | dump_register(GUSB2I2CCTL(11)), | |
102 | dump_register(GUSB2I2CCTL(12)), | |
103 | dump_register(GUSB2I2CCTL(13)), | |
104 | dump_register(GUSB2I2CCTL(14)), | |
105 | dump_register(GUSB2I2CCTL(15)), | |
106 | ||
107 | dump_register(GUSB2PHYACC(0)), | |
108 | dump_register(GUSB2PHYACC(1)), | |
109 | dump_register(GUSB2PHYACC(2)), | |
110 | dump_register(GUSB2PHYACC(3)), | |
111 | dump_register(GUSB2PHYACC(4)), | |
112 | dump_register(GUSB2PHYACC(5)), | |
113 | dump_register(GUSB2PHYACC(6)), | |
114 | dump_register(GUSB2PHYACC(7)), | |
115 | dump_register(GUSB2PHYACC(8)), | |
116 | dump_register(GUSB2PHYACC(9)), | |
117 | dump_register(GUSB2PHYACC(10)), | |
118 | dump_register(GUSB2PHYACC(11)), | |
119 | dump_register(GUSB2PHYACC(12)), | |
120 | dump_register(GUSB2PHYACC(13)), | |
121 | dump_register(GUSB2PHYACC(14)), | |
122 | dump_register(GUSB2PHYACC(15)), | |
123 | ||
124 | dump_register(GUSB3PIPECTL(0)), | |
125 | dump_register(GUSB3PIPECTL(1)), | |
126 | dump_register(GUSB3PIPECTL(2)), | |
127 | dump_register(GUSB3PIPECTL(3)), | |
128 | dump_register(GUSB3PIPECTL(4)), | |
129 | dump_register(GUSB3PIPECTL(5)), | |
130 | dump_register(GUSB3PIPECTL(6)), | |
131 | dump_register(GUSB3PIPECTL(7)), | |
132 | dump_register(GUSB3PIPECTL(8)), | |
133 | dump_register(GUSB3PIPECTL(9)), | |
134 | dump_register(GUSB3PIPECTL(10)), | |
135 | dump_register(GUSB3PIPECTL(11)), | |
136 | dump_register(GUSB3PIPECTL(12)), | |
137 | dump_register(GUSB3PIPECTL(13)), | |
138 | dump_register(GUSB3PIPECTL(14)), | |
139 | dump_register(GUSB3PIPECTL(15)), | |
140 | ||
141 | dump_register(GTXFIFOSIZ(0)), | |
142 | dump_register(GTXFIFOSIZ(1)), | |
143 | dump_register(GTXFIFOSIZ(2)), | |
144 | dump_register(GTXFIFOSIZ(3)), | |
145 | dump_register(GTXFIFOSIZ(4)), | |
146 | dump_register(GTXFIFOSIZ(5)), | |
147 | dump_register(GTXFIFOSIZ(6)), | |
148 | dump_register(GTXFIFOSIZ(7)), | |
149 | dump_register(GTXFIFOSIZ(8)), | |
150 | dump_register(GTXFIFOSIZ(9)), | |
151 | dump_register(GTXFIFOSIZ(10)), | |
152 | dump_register(GTXFIFOSIZ(11)), | |
153 | dump_register(GTXFIFOSIZ(12)), | |
154 | dump_register(GTXFIFOSIZ(13)), | |
155 | dump_register(GTXFIFOSIZ(14)), | |
156 | dump_register(GTXFIFOSIZ(15)), | |
157 | dump_register(GTXFIFOSIZ(16)), | |
158 | dump_register(GTXFIFOSIZ(17)), | |
159 | dump_register(GTXFIFOSIZ(18)), | |
160 | dump_register(GTXFIFOSIZ(19)), | |
161 | dump_register(GTXFIFOSIZ(20)), | |
162 | dump_register(GTXFIFOSIZ(21)), | |
163 | dump_register(GTXFIFOSIZ(22)), | |
164 | dump_register(GTXFIFOSIZ(23)), | |
165 | dump_register(GTXFIFOSIZ(24)), | |
166 | dump_register(GTXFIFOSIZ(25)), | |
167 | dump_register(GTXFIFOSIZ(26)), | |
168 | dump_register(GTXFIFOSIZ(27)), | |
169 | dump_register(GTXFIFOSIZ(28)), | |
170 | dump_register(GTXFIFOSIZ(29)), | |
171 | dump_register(GTXFIFOSIZ(30)), | |
172 | dump_register(GTXFIFOSIZ(31)), | |
173 | ||
174 | dump_register(GRXFIFOSIZ(0)), | |
175 | dump_register(GRXFIFOSIZ(1)), | |
176 | dump_register(GRXFIFOSIZ(2)), | |
177 | dump_register(GRXFIFOSIZ(3)), | |
178 | dump_register(GRXFIFOSIZ(4)), | |
179 | dump_register(GRXFIFOSIZ(5)), | |
180 | dump_register(GRXFIFOSIZ(6)), | |
181 | dump_register(GRXFIFOSIZ(7)), | |
182 | dump_register(GRXFIFOSIZ(8)), | |
183 | dump_register(GRXFIFOSIZ(9)), | |
184 | dump_register(GRXFIFOSIZ(10)), | |
185 | dump_register(GRXFIFOSIZ(11)), | |
186 | dump_register(GRXFIFOSIZ(12)), | |
187 | dump_register(GRXFIFOSIZ(13)), | |
188 | dump_register(GRXFIFOSIZ(14)), | |
189 | dump_register(GRXFIFOSIZ(15)), | |
190 | dump_register(GRXFIFOSIZ(16)), | |
191 | dump_register(GRXFIFOSIZ(17)), | |
192 | dump_register(GRXFIFOSIZ(18)), | |
193 | dump_register(GRXFIFOSIZ(19)), | |
194 | dump_register(GRXFIFOSIZ(20)), | |
195 | dump_register(GRXFIFOSIZ(21)), | |
196 | dump_register(GRXFIFOSIZ(22)), | |
197 | dump_register(GRXFIFOSIZ(23)), | |
198 | dump_register(GRXFIFOSIZ(24)), | |
199 | dump_register(GRXFIFOSIZ(25)), | |
200 | dump_register(GRXFIFOSIZ(26)), | |
201 | dump_register(GRXFIFOSIZ(27)), | |
202 | dump_register(GRXFIFOSIZ(28)), | |
203 | dump_register(GRXFIFOSIZ(29)), | |
204 | dump_register(GRXFIFOSIZ(30)), | |
205 | dump_register(GRXFIFOSIZ(31)), | |
206 | ||
207 | dump_register(GEVNTADRLO(0)), | |
208 | dump_register(GEVNTADRHI(0)), | |
209 | dump_register(GEVNTSIZ(0)), | |
210 | dump_register(GEVNTCOUNT(0)), | |
211 | ||
212 | dump_register(GHWPARAMS8), | |
213 | dump_register(DCFG), | |
214 | dump_register(DCTL), | |
215 | dump_register(DEVTEN), | |
216 | dump_register(DSTS), | |
217 | dump_register(DGCMDPAR), | |
218 | dump_register(DGCMD), | |
219 | dump_register(DALEPENA), | |
220 | ||
221 | dump_register(DEPCMDPAR2(0)), | |
222 | dump_register(DEPCMDPAR2(1)), | |
223 | dump_register(DEPCMDPAR2(2)), | |
224 | dump_register(DEPCMDPAR2(3)), | |
225 | dump_register(DEPCMDPAR2(4)), | |
226 | dump_register(DEPCMDPAR2(5)), | |
227 | dump_register(DEPCMDPAR2(6)), | |
228 | dump_register(DEPCMDPAR2(7)), | |
229 | dump_register(DEPCMDPAR2(8)), | |
230 | dump_register(DEPCMDPAR2(9)), | |
231 | dump_register(DEPCMDPAR2(10)), | |
232 | dump_register(DEPCMDPAR2(11)), | |
233 | dump_register(DEPCMDPAR2(12)), | |
234 | dump_register(DEPCMDPAR2(13)), | |
235 | dump_register(DEPCMDPAR2(14)), | |
236 | dump_register(DEPCMDPAR2(15)), | |
237 | dump_register(DEPCMDPAR2(16)), | |
238 | dump_register(DEPCMDPAR2(17)), | |
239 | dump_register(DEPCMDPAR2(18)), | |
240 | dump_register(DEPCMDPAR2(19)), | |
241 | dump_register(DEPCMDPAR2(20)), | |
242 | dump_register(DEPCMDPAR2(21)), | |
243 | dump_register(DEPCMDPAR2(22)), | |
244 | dump_register(DEPCMDPAR2(23)), | |
245 | dump_register(DEPCMDPAR2(24)), | |
246 | dump_register(DEPCMDPAR2(25)), | |
247 | dump_register(DEPCMDPAR2(26)), | |
248 | dump_register(DEPCMDPAR2(27)), | |
249 | dump_register(DEPCMDPAR2(28)), | |
250 | dump_register(DEPCMDPAR2(29)), | |
251 | dump_register(DEPCMDPAR2(30)), | |
252 | dump_register(DEPCMDPAR2(31)), | |
253 | ||
254 | dump_register(DEPCMDPAR1(0)), | |
255 | dump_register(DEPCMDPAR1(1)), | |
256 | dump_register(DEPCMDPAR1(2)), | |
257 | dump_register(DEPCMDPAR1(3)), | |
258 | dump_register(DEPCMDPAR1(4)), | |
259 | dump_register(DEPCMDPAR1(5)), | |
260 | dump_register(DEPCMDPAR1(6)), | |
261 | dump_register(DEPCMDPAR1(7)), | |
262 | dump_register(DEPCMDPAR1(8)), | |
263 | dump_register(DEPCMDPAR1(9)), | |
264 | dump_register(DEPCMDPAR1(10)), | |
265 | dump_register(DEPCMDPAR1(11)), | |
266 | dump_register(DEPCMDPAR1(12)), | |
267 | dump_register(DEPCMDPAR1(13)), | |
268 | dump_register(DEPCMDPAR1(14)), | |
269 | dump_register(DEPCMDPAR1(15)), | |
270 | dump_register(DEPCMDPAR1(16)), | |
271 | dump_register(DEPCMDPAR1(17)), | |
272 | dump_register(DEPCMDPAR1(18)), | |
273 | dump_register(DEPCMDPAR1(19)), | |
274 | dump_register(DEPCMDPAR1(20)), | |
275 | dump_register(DEPCMDPAR1(21)), | |
276 | dump_register(DEPCMDPAR1(22)), | |
277 | dump_register(DEPCMDPAR1(23)), | |
278 | dump_register(DEPCMDPAR1(24)), | |
279 | dump_register(DEPCMDPAR1(25)), | |
280 | dump_register(DEPCMDPAR1(26)), | |
281 | dump_register(DEPCMDPAR1(27)), | |
282 | dump_register(DEPCMDPAR1(28)), | |
283 | dump_register(DEPCMDPAR1(29)), | |
284 | dump_register(DEPCMDPAR1(30)), | |
285 | dump_register(DEPCMDPAR1(31)), | |
286 | ||
287 | dump_register(DEPCMDPAR0(0)), | |
288 | dump_register(DEPCMDPAR0(1)), | |
289 | dump_register(DEPCMDPAR0(2)), | |
290 | dump_register(DEPCMDPAR0(3)), | |
291 | dump_register(DEPCMDPAR0(4)), | |
292 | dump_register(DEPCMDPAR0(5)), | |
293 | dump_register(DEPCMDPAR0(6)), | |
294 | dump_register(DEPCMDPAR0(7)), | |
295 | dump_register(DEPCMDPAR0(8)), | |
296 | dump_register(DEPCMDPAR0(9)), | |
297 | dump_register(DEPCMDPAR0(10)), | |
298 | dump_register(DEPCMDPAR0(11)), | |
299 | dump_register(DEPCMDPAR0(12)), | |
300 | dump_register(DEPCMDPAR0(13)), | |
301 | dump_register(DEPCMDPAR0(14)), | |
302 | dump_register(DEPCMDPAR0(15)), | |
303 | dump_register(DEPCMDPAR0(16)), | |
304 | dump_register(DEPCMDPAR0(17)), | |
305 | dump_register(DEPCMDPAR0(18)), | |
306 | dump_register(DEPCMDPAR0(19)), | |
307 | dump_register(DEPCMDPAR0(20)), | |
308 | dump_register(DEPCMDPAR0(21)), | |
309 | dump_register(DEPCMDPAR0(22)), | |
310 | dump_register(DEPCMDPAR0(23)), | |
311 | dump_register(DEPCMDPAR0(24)), | |
312 | dump_register(DEPCMDPAR0(25)), | |
313 | dump_register(DEPCMDPAR0(26)), | |
314 | dump_register(DEPCMDPAR0(27)), | |
315 | dump_register(DEPCMDPAR0(28)), | |
316 | dump_register(DEPCMDPAR0(29)), | |
317 | dump_register(DEPCMDPAR0(30)), | |
318 | dump_register(DEPCMDPAR0(31)), | |
319 | ||
320 | dump_register(DEPCMD(0)), | |
321 | dump_register(DEPCMD(1)), | |
322 | dump_register(DEPCMD(2)), | |
323 | dump_register(DEPCMD(3)), | |
324 | dump_register(DEPCMD(4)), | |
325 | dump_register(DEPCMD(5)), | |
326 | dump_register(DEPCMD(6)), | |
327 | dump_register(DEPCMD(7)), | |
328 | dump_register(DEPCMD(8)), | |
329 | dump_register(DEPCMD(9)), | |
330 | dump_register(DEPCMD(10)), | |
331 | dump_register(DEPCMD(11)), | |
332 | dump_register(DEPCMD(12)), | |
333 | dump_register(DEPCMD(13)), | |
334 | dump_register(DEPCMD(14)), | |
335 | dump_register(DEPCMD(15)), | |
336 | dump_register(DEPCMD(16)), | |
337 | dump_register(DEPCMD(17)), | |
338 | dump_register(DEPCMD(18)), | |
339 | dump_register(DEPCMD(19)), | |
340 | dump_register(DEPCMD(20)), | |
341 | dump_register(DEPCMD(21)), | |
342 | dump_register(DEPCMD(22)), | |
343 | dump_register(DEPCMD(23)), | |
344 | dump_register(DEPCMD(24)), | |
345 | dump_register(DEPCMD(25)), | |
346 | dump_register(DEPCMD(26)), | |
347 | dump_register(DEPCMD(27)), | |
348 | dump_register(DEPCMD(28)), | |
349 | dump_register(DEPCMD(29)), | |
350 | dump_register(DEPCMD(30)), | |
351 | dump_register(DEPCMD(31)), | |
352 | ||
353 | dump_register(OCFG), | |
354 | dump_register(OCTL), | |
d4436c3a | 355 | dump_register(OEVT), |
72246da4 FB |
356 | dump_register(OEVTEN), |
357 | dump_register(OSTS), | |
358 | }; | |
359 | ||
0b9fe32d FB |
360 | static int dwc3_mode_show(struct seq_file *s, void *unused) |
361 | { | |
362 | struct dwc3 *dwc = s->private; | |
363 | unsigned long flags; | |
364 | u32 reg; | |
365 | ||
366 | spin_lock_irqsave(&dwc->lock, flags); | |
367 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); | |
368 | spin_unlock_irqrestore(&dwc->lock, flags); | |
369 | ||
370 | switch (DWC3_GCTL_PRTCAP(reg)) { | |
371 | case DWC3_GCTL_PRTCAP_HOST: | |
372 | seq_printf(s, "host\n"); | |
373 | break; | |
374 | case DWC3_GCTL_PRTCAP_DEVICE: | |
375 | seq_printf(s, "device\n"); | |
376 | break; | |
377 | case DWC3_GCTL_PRTCAP_OTG: | |
378 | seq_printf(s, "OTG\n"); | |
379 | break; | |
380 | default: | |
381 | seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg)); | |
382 | } | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
387 | static int dwc3_mode_open(struct inode *inode, struct file *file) | |
388 | { | |
389 | return single_open(file, dwc3_mode_show, inode->i_private); | |
390 | } | |
391 | ||
392 | static ssize_t dwc3_mode_write(struct file *file, | |
393 | const char __user *ubuf, size_t count, loff_t *ppos) | |
394 | { | |
395 | struct seq_file *s = file->private_data; | |
396 | struct dwc3 *dwc = s->private; | |
397 | unsigned long flags; | |
3140e8cb | 398 | u32 mode = 0; |
0b9fe32d FB |
399 | char buf[32]; |
400 | ||
401 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
402 | return -EFAULT; | |
403 | ||
0b9fe32d | 404 | if (!strncmp(buf, "host", 4)) |
3140e8cb | 405 | mode |= DWC3_GCTL_PRTCAP_HOST; |
0b9fe32d FB |
406 | |
407 | if (!strncmp(buf, "device", 6)) | |
3140e8cb | 408 | mode |= DWC3_GCTL_PRTCAP_DEVICE; |
0b9fe32d FB |
409 | |
410 | if (!strncmp(buf, "otg", 3)) | |
3140e8cb | 411 | mode |= DWC3_GCTL_PRTCAP_OTG; |
0b9fe32d | 412 | |
3140e8cb SAS |
413 | if (mode) { |
414 | spin_lock_irqsave(&dwc->lock, flags); | |
415 | dwc3_set_mode(dwc, mode); | |
416 | spin_unlock_irqrestore(&dwc->lock, flags); | |
417 | } | |
0b9fe32d FB |
418 | return count; |
419 | } | |
420 | ||
421 | static const struct file_operations dwc3_mode_fops = { | |
422 | .open = dwc3_mode_open, | |
423 | .write = dwc3_mode_write, | |
424 | .read = seq_read, | |
425 | .llseek = seq_lseek, | |
426 | .release = single_release, | |
427 | }; | |
428 | ||
080d921f FB |
429 | static int dwc3_testmode_show(struct seq_file *s, void *unused) |
430 | { | |
431 | struct dwc3 *dwc = s->private; | |
432 | unsigned long flags; | |
433 | u32 reg; | |
434 | ||
435 | spin_lock_irqsave(&dwc->lock, flags); | |
436 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); | |
437 | reg &= DWC3_DCTL_TSTCTRL_MASK; | |
438 | reg >>= 1; | |
439 | spin_unlock_irqrestore(&dwc->lock, flags); | |
440 | ||
441 | switch (reg) { | |
442 | case 0: | |
443 | seq_printf(s, "no test\n"); | |
444 | break; | |
445 | case TEST_J: | |
446 | seq_printf(s, "test_j\n"); | |
447 | break; | |
448 | case TEST_K: | |
449 | seq_printf(s, "test_k\n"); | |
450 | break; | |
451 | case TEST_SE0_NAK: | |
452 | seq_printf(s, "test_se0_nak\n"); | |
453 | break; | |
454 | case TEST_PACKET: | |
455 | seq_printf(s, "test_packet\n"); | |
456 | break; | |
457 | case TEST_FORCE_EN: | |
458 | seq_printf(s, "test_force_enable\n"); | |
459 | break; | |
460 | default: | |
461 | seq_printf(s, "UNKNOWN %d\n", reg); | |
462 | } | |
463 | ||
464 | return 0; | |
465 | } | |
466 | ||
467 | static int dwc3_testmode_open(struct inode *inode, struct file *file) | |
468 | { | |
469 | return single_open(file, dwc3_testmode_show, inode->i_private); | |
470 | } | |
471 | ||
472 | static ssize_t dwc3_testmode_write(struct file *file, | |
473 | const char __user *ubuf, size_t count, loff_t *ppos) | |
474 | { | |
475 | struct seq_file *s = file->private_data; | |
476 | struct dwc3 *dwc = s->private; | |
477 | unsigned long flags; | |
478 | u32 testmode = 0; | |
479 | char buf[32]; | |
480 | ||
481 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
482 | return -EFAULT; | |
483 | ||
484 | if (!strncmp(buf, "test_j", 6)) | |
485 | testmode = TEST_J; | |
486 | else if (!strncmp(buf, "test_k", 6)) | |
487 | testmode = TEST_K; | |
09072543 | 488 | else if (!strncmp(buf, "test_se0_nak", 12)) |
080d921f | 489 | testmode = TEST_SE0_NAK; |
09072543 | 490 | else if (!strncmp(buf, "test_packet", 11)) |
080d921f | 491 | testmode = TEST_PACKET; |
09072543 | 492 | else if (!strncmp(buf, "test_force_enable", 17)) |
080d921f FB |
493 | testmode = TEST_FORCE_EN; |
494 | else | |
495 | testmode = 0; | |
496 | ||
497 | spin_lock_irqsave(&dwc->lock, flags); | |
498 | dwc3_gadget_set_test_mode(dwc, testmode); | |
499 | spin_unlock_irqrestore(&dwc->lock, flags); | |
500 | ||
501 | return count; | |
502 | } | |
503 | ||
504 | static const struct file_operations dwc3_testmode_fops = { | |
505 | .open = dwc3_testmode_open, | |
506 | .write = dwc3_testmode_write, | |
507 | .read = seq_read, | |
508 | .llseek = seq_lseek, | |
509 | .release = single_release, | |
510 | }; | |
511 | ||
138801aa FB |
512 | static int dwc3_link_state_show(struct seq_file *s, void *unused) |
513 | { | |
514 | struct dwc3 *dwc = s->private; | |
515 | unsigned long flags; | |
516 | enum dwc3_link_state state; | |
517 | u32 reg; | |
518 | ||
519 | spin_lock_irqsave(&dwc->lock, flags); | |
520 | reg = dwc3_readl(dwc->regs, DWC3_DSTS); | |
521 | state = DWC3_DSTS_USBLNKST(reg); | |
522 | spin_unlock_irqrestore(&dwc->lock, flags); | |
523 | ||
524 | switch (state) { | |
525 | case DWC3_LINK_STATE_U0: | |
526 | seq_printf(s, "U0\n"); | |
527 | break; | |
528 | case DWC3_LINK_STATE_U1: | |
529 | seq_printf(s, "U1\n"); | |
530 | break; | |
531 | case DWC3_LINK_STATE_U2: | |
532 | seq_printf(s, "U2\n"); | |
533 | break; | |
534 | case DWC3_LINK_STATE_U3: | |
535 | seq_printf(s, "U3\n"); | |
536 | break; | |
537 | case DWC3_LINK_STATE_SS_DIS: | |
538 | seq_printf(s, "SS.Disabled\n"); | |
539 | break; | |
540 | case DWC3_LINK_STATE_RX_DET: | |
541 | seq_printf(s, "Rx.Detect\n"); | |
542 | break; | |
543 | case DWC3_LINK_STATE_SS_INACT: | |
544 | seq_printf(s, "SS.Inactive\n"); | |
545 | break; | |
546 | case DWC3_LINK_STATE_POLL: | |
547 | seq_printf(s, "Poll\n"); | |
548 | break; | |
549 | case DWC3_LINK_STATE_RECOV: | |
550 | seq_printf(s, "Recovery\n"); | |
551 | break; | |
552 | case DWC3_LINK_STATE_HRESET: | |
553 | seq_printf(s, "HRESET\n"); | |
554 | break; | |
555 | case DWC3_LINK_STATE_CMPLY: | |
556 | seq_printf(s, "Compliance\n"); | |
557 | break; | |
558 | case DWC3_LINK_STATE_LPBK: | |
559 | seq_printf(s, "Loopback\n"); | |
560 | break; | |
6b2a0eb8 FB |
561 | case DWC3_LINK_STATE_RESET: |
562 | seq_printf(s, "Reset\n"); | |
563 | break; | |
564 | case DWC3_LINK_STATE_RESUME: | |
565 | seq_printf(s, "Resume\n"); | |
566 | break; | |
138801aa | 567 | default: |
5b9ec339 | 568 | seq_printf(s, "UNKNOWN %d\n", state); |
138801aa FB |
569 | } |
570 | ||
571 | return 0; | |
572 | } | |
573 | ||
574 | static int dwc3_link_state_open(struct inode *inode, struct file *file) | |
575 | { | |
576 | return single_open(file, dwc3_link_state_show, inode->i_private); | |
577 | } | |
578 | ||
579 | static ssize_t dwc3_link_state_write(struct file *file, | |
580 | const char __user *ubuf, size_t count, loff_t *ppos) | |
581 | { | |
582 | struct seq_file *s = file->private_data; | |
583 | struct dwc3 *dwc = s->private; | |
584 | unsigned long flags; | |
585 | enum dwc3_link_state state = 0; | |
586 | char buf[32]; | |
587 | ||
588 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
589 | return -EFAULT; | |
590 | ||
591 | if (!strncmp(buf, "SS.Disabled", 11)) | |
592 | state = DWC3_LINK_STATE_SS_DIS; | |
593 | else if (!strncmp(buf, "Rx.Detect", 9)) | |
594 | state = DWC3_LINK_STATE_RX_DET; | |
595 | else if (!strncmp(buf, "SS.Inactive", 11)) | |
596 | state = DWC3_LINK_STATE_SS_INACT; | |
597 | else if (!strncmp(buf, "Recovery", 8)) | |
598 | state = DWC3_LINK_STATE_RECOV; | |
599 | else if (!strncmp(buf, "Compliance", 10)) | |
600 | state = DWC3_LINK_STATE_CMPLY; | |
601 | else if (!strncmp(buf, "Loopback", 8)) | |
602 | state = DWC3_LINK_STATE_LPBK; | |
603 | else | |
604 | return -EINVAL; | |
605 | ||
606 | spin_lock_irqsave(&dwc->lock, flags); | |
607 | dwc3_gadget_set_link_state(dwc, state); | |
608 | spin_unlock_irqrestore(&dwc->lock, flags); | |
609 | ||
610 | return count; | |
611 | } | |
612 | ||
613 | static const struct file_operations dwc3_link_state_fops = { | |
614 | .open = dwc3_link_state_open, | |
615 | .write = dwc3_link_state_write, | |
616 | .read = seq_read, | |
617 | .llseek = seq_lseek, | |
618 | .release = single_release, | |
619 | }; | |
620 | ||
41ac7b3a | 621 | int dwc3_debugfs_init(struct dwc3 *dwc) |
72246da4 FB |
622 | { |
623 | struct dentry *root; | |
624 | struct dentry *file; | |
625 | int ret; | |
626 | ||
627 | root = debugfs_create_dir(dev_name(dwc->dev), NULL); | |
3d4c0d4f FB |
628 | if (!root) { |
629 | ret = -ENOMEM; | |
72246da4 FB |
630 | goto err0; |
631 | } | |
632 | ||
633 | dwc->root = root; | |
634 | ||
d7668024 FB |
635 | dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); |
636 | if (!dwc->regset) { | |
637 | ret = -ENOMEM; | |
638 | goto err1; | |
639 | } | |
640 | ||
641 | dwc->regset->regs = dwc3_regs; | |
642 | dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); | |
643 | dwc->regset->base = dwc->regs; | |
644 | ||
645 | file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset); | |
3d4c0d4f FB |
646 | if (!file) { |
647 | ret = -ENOMEM; | |
72246da4 FB |
648 | goto err1; |
649 | } | |
0b9fe32d | 650 | |
dbfff05d FB |
651 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) { |
652 | file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, | |
653 | dwc, &dwc3_mode_fops); | |
654 | if (!file) { | |
655 | ret = -ENOMEM; | |
656 | goto err1; | |
657 | } | |
0b9fe32d FB |
658 | } |
659 | ||
dbfff05d FB |
660 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) || |
661 | IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { | |
662 | file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root, | |
663 | dwc, &dwc3_testmode_fops); | |
664 | if (!file) { | |
665 | ret = -ENOMEM; | |
666 | goto err1; | |
667 | } | |
668 | ||
669 | file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root, | |
670 | dwc, &dwc3_link_state_fops); | |
671 | if (!file) { | |
672 | ret = -ENOMEM; | |
673 | goto err1; | |
674 | } | |
138801aa FB |
675 | } |
676 | ||
72246da4 FB |
677 | return 0; |
678 | ||
679 | err1: | |
680 | debugfs_remove_recursive(root); | |
681 | ||
682 | err0: | |
683 | return ret; | |
684 | } | |
685 | ||
fb4e98ab | 686 | void dwc3_debugfs_exit(struct dwc3 *dwc) |
72246da4 FB |
687 | { |
688 | debugfs_remove_recursive(dwc->root); | |
689 | dwc->root = NULL; | |
690 | } |