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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 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions, and the following disclaimer, | |
14 | * without modification. | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in the | |
17 | * documentation and/or other materials provided with the distribution. | |
18 | * 3. The names of the above-listed copyright holders may not be used | |
19 | * to endorse or promote products derived from this software without | |
20 | * specific prior written permission. | |
21 | * | |
22 | * ALTERNATIVELY, this software may be distributed under the terms of the | |
23 | * GNU General Public License ("GPL") version 2, as published by the Free | |
24 | * Software Foundation. | |
25 | * | |
26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
27 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
28 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
29 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
30 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
31 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
32 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
33 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
36 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
37 | */ | |
38 | ||
39 | #include <linux/kernel.h> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/ptrace.h> | |
42 | #include <linux/types.h> | |
43 | #include <linux/spinlock.h> | |
44 | #include <linux/debugfs.h> | |
45 | #include <linux/seq_file.h> | |
46 | #include <linux/delay.h> | |
25b8ff68 | 47 | #include <linux/uaccess.h> |
72246da4 | 48 | |
080d921f FB |
49 | #include <linux/usb/ch9.h> |
50 | ||
72246da4 FB |
51 | #include "core.h" |
52 | #include "gadget.h" | |
53 | #include "io.h" | |
8becf270 | 54 | #include "debug.h" |
72246da4 | 55 | |
72246da4 FB |
56 | #define dump_register(nm) \ |
57 | { \ | |
58 | .name = __stringify(nm), \ | |
1604c1e7 | 59 | .offset = DWC3_ ##nm - DWC3_GLOBALS_REGS_START, \ |
72246da4 FB |
60 | } |
61 | ||
4ec0ddb1 | 62 | static const struct debugfs_reg32 dwc3_regs[] = { |
72246da4 FB |
63 | dump_register(GSBUSCFG0), |
64 | dump_register(GSBUSCFG1), | |
65 | dump_register(GTXTHRCFG), | |
66 | dump_register(GRXTHRCFG), | |
67 | dump_register(GCTL), | |
68 | dump_register(GEVTEN), | |
69 | dump_register(GSTS), | |
70 | dump_register(GSNPSID), | |
71 | dump_register(GGPIO), | |
72 | dump_register(GUID), | |
73 | dump_register(GUCTL), | |
74 | dump_register(GBUSERRADDR0), | |
75 | dump_register(GBUSERRADDR1), | |
76 | dump_register(GPRTBIMAP0), | |
77 | dump_register(GPRTBIMAP1), | |
78 | dump_register(GHWPARAMS0), | |
79 | dump_register(GHWPARAMS1), | |
80 | dump_register(GHWPARAMS2), | |
81 | dump_register(GHWPARAMS3), | |
82 | dump_register(GHWPARAMS4), | |
83 | dump_register(GHWPARAMS5), | |
84 | dump_register(GHWPARAMS6), | |
85 | dump_register(GHWPARAMS7), | |
86 | dump_register(GDBGFIFOSPACE), | |
87 | dump_register(GDBGLTSSM), | |
88 | dump_register(GPRTBIMAP_HS0), | |
89 | dump_register(GPRTBIMAP_HS1), | |
90 | dump_register(GPRTBIMAP_FS0), | |
91 | dump_register(GPRTBIMAP_FS1), | |
92 | ||
93 | dump_register(GUSB2PHYCFG(0)), | |
94 | dump_register(GUSB2PHYCFG(1)), | |
95 | dump_register(GUSB2PHYCFG(2)), | |
96 | dump_register(GUSB2PHYCFG(3)), | |
97 | dump_register(GUSB2PHYCFG(4)), | |
98 | dump_register(GUSB2PHYCFG(5)), | |
99 | dump_register(GUSB2PHYCFG(6)), | |
100 | dump_register(GUSB2PHYCFG(7)), | |
101 | dump_register(GUSB2PHYCFG(8)), | |
102 | dump_register(GUSB2PHYCFG(9)), | |
103 | dump_register(GUSB2PHYCFG(10)), | |
104 | dump_register(GUSB2PHYCFG(11)), | |
105 | dump_register(GUSB2PHYCFG(12)), | |
106 | dump_register(GUSB2PHYCFG(13)), | |
107 | dump_register(GUSB2PHYCFG(14)), | |
108 | dump_register(GUSB2PHYCFG(15)), | |
109 | ||
110 | dump_register(GUSB2I2CCTL(0)), | |
111 | dump_register(GUSB2I2CCTL(1)), | |
112 | dump_register(GUSB2I2CCTL(2)), | |
113 | dump_register(GUSB2I2CCTL(3)), | |
114 | dump_register(GUSB2I2CCTL(4)), | |
115 | dump_register(GUSB2I2CCTL(5)), | |
116 | dump_register(GUSB2I2CCTL(6)), | |
117 | dump_register(GUSB2I2CCTL(7)), | |
118 | dump_register(GUSB2I2CCTL(8)), | |
119 | dump_register(GUSB2I2CCTL(9)), | |
120 | dump_register(GUSB2I2CCTL(10)), | |
121 | dump_register(GUSB2I2CCTL(11)), | |
122 | dump_register(GUSB2I2CCTL(12)), | |
123 | dump_register(GUSB2I2CCTL(13)), | |
124 | dump_register(GUSB2I2CCTL(14)), | |
125 | dump_register(GUSB2I2CCTL(15)), | |
126 | ||
127 | dump_register(GUSB2PHYACC(0)), | |
128 | dump_register(GUSB2PHYACC(1)), | |
129 | dump_register(GUSB2PHYACC(2)), | |
130 | dump_register(GUSB2PHYACC(3)), | |
131 | dump_register(GUSB2PHYACC(4)), | |
132 | dump_register(GUSB2PHYACC(5)), | |
133 | dump_register(GUSB2PHYACC(6)), | |
134 | dump_register(GUSB2PHYACC(7)), | |
135 | dump_register(GUSB2PHYACC(8)), | |
136 | dump_register(GUSB2PHYACC(9)), | |
137 | dump_register(GUSB2PHYACC(10)), | |
138 | dump_register(GUSB2PHYACC(11)), | |
139 | dump_register(GUSB2PHYACC(12)), | |
140 | dump_register(GUSB2PHYACC(13)), | |
141 | dump_register(GUSB2PHYACC(14)), | |
142 | dump_register(GUSB2PHYACC(15)), | |
143 | ||
144 | dump_register(GUSB3PIPECTL(0)), | |
145 | dump_register(GUSB3PIPECTL(1)), | |
146 | dump_register(GUSB3PIPECTL(2)), | |
147 | dump_register(GUSB3PIPECTL(3)), | |
148 | dump_register(GUSB3PIPECTL(4)), | |
149 | dump_register(GUSB3PIPECTL(5)), | |
150 | dump_register(GUSB3PIPECTL(6)), | |
151 | dump_register(GUSB3PIPECTL(7)), | |
152 | dump_register(GUSB3PIPECTL(8)), | |
153 | dump_register(GUSB3PIPECTL(9)), | |
154 | dump_register(GUSB3PIPECTL(10)), | |
155 | dump_register(GUSB3PIPECTL(11)), | |
156 | dump_register(GUSB3PIPECTL(12)), | |
157 | dump_register(GUSB3PIPECTL(13)), | |
158 | dump_register(GUSB3PIPECTL(14)), | |
159 | dump_register(GUSB3PIPECTL(15)), | |
160 | ||
161 | dump_register(GTXFIFOSIZ(0)), | |
162 | dump_register(GTXFIFOSIZ(1)), | |
163 | dump_register(GTXFIFOSIZ(2)), | |
164 | dump_register(GTXFIFOSIZ(3)), | |
165 | dump_register(GTXFIFOSIZ(4)), | |
166 | dump_register(GTXFIFOSIZ(5)), | |
167 | dump_register(GTXFIFOSIZ(6)), | |
168 | dump_register(GTXFIFOSIZ(7)), | |
169 | dump_register(GTXFIFOSIZ(8)), | |
170 | dump_register(GTXFIFOSIZ(9)), | |
171 | dump_register(GTXFIFOSIZ(10)), | |
172 | dump_register(GTXFIFOSIZ(11)), | |
173 | dump_register(GTXFIFOSIZ(12)), | |
174 | dump_register(GTXFIFOSIZ(13)), | |
175 | dump_register(GTXFIFOSIZ(14)), | |
176 | dump_register(GTXFIFOSIZ(15)), | |
177 | dump_register(GTXFIFOSIZ(16)), | |
178 | dump_register(GTXFIFOSIZ(17)), | |
179 | dump_register(GTXFIFOSIZ(18)), | |
180 | dump_register(GTXFIFOSIZ(19)), | |
181 | dump_register(GTXFIFOSIZ(20)), | |
182 | dump_register(GTXFIFOSIZ(21)), | |
183 | dump_register(GTXFIFOSIZ(22)), | |
184 | dump_register(GTXFIFOSIZ(23)), | |
185 | dump_register(GTXFIFOSIZ(24)), | |
186 | dump_register(GTXFIFOSIZ(25)), | |
187 | dump_register(GTXFIFOSIZ(26)), | |
188 | dump_register(GTXFIFOSIZ(27)), | |
189 | dump_register(GTXFIFOSIZ(28)), | |
190 | dump_register(GTXFIFOSIZ(29)), | |
191 | dump_register(GTXFIFOSIZ(30)), | |
192 | dump_register(GTXFIFOSIZ(31)), | |
193 | ||
194 | dump_register(GRXFIFOSIZ(0)), | |
195 | dump_register(GRXFIFOSIZ(1)), | |
196 | dump_register(GRXFIFOSIZ(2)), | |
197 | dump_register(GRXFIFOSIZ(3)), | |
198 | dump_register(GRXFIFOSIZ(4)), | |
199 | dump_register(GRXFIFOSIZ(5)), | |
200 | dump_register(GRXFIFOSIZ(6)), | |
201 | dump_register(GRXFIFOSIZ(7)), | |
202 | dump_register(GRXFIFOSIZ(8)), | |
203 | dump_register(GRXFIFOSIZ(9)), | |
204 | dump_register(GRXFIFOSIZ(10)), | |
205 | dump_register(GRXFIFOSIZ(11)), | |
206 | dump_register(GRXFIFOSIZ(12)), | |
207 | dump_register(GRXFIFOSIZ(13)), | |
208 | dump_register(GRXFIFOSIZ(14)), | |
209 | dump_register(GRXFIFOSIZ(15)), | |
210 | dump_register(GRXFIFOSIZ(16)), | |
211 | dump_register(GRXFIFOSIZ(17)), | |
212 | dump_register(GRXFIFOSIZ(18)), | |
213 | dump_register(GRXFIFOSIZ(19)), | |
214 | dump_register(GRXFIFOSIZ(20)), | |
215 | dump_register(GRXFIFOSIZ(21)), | |
216 | dump_register(GRXFIFOSIZ(22)), | |
217 | dump_register(GRXFIFOSIZ(23)), | |
218 | dump_register(GRXFIFOSIZ(24)), | |
219 | dump_register(GRXFIFOSIZ(25)), | |
220 | dump_register(GRXFIFOSIZ(26)), | |
221 | dump_register(GRXFIFOSIZ(27)), | |
222 | dump_register(GRXFIFOSIZ(28)), | |
223 | dump_register(GRXFIFOSIZ(29)), | |
224 | dump_register(GRXFIFOSIZ(30)), | |
225 | dump_register(GRXFIFOSIZ(31)), | |
226 | ||
227 | dump_register(GEVNTADRLO(0)), | |
228 | dump_register(GEVNTADRHI(0)), | |
229 | dump_register(GEVNTSIZ(0)), | |
230 | dump_register(GEVNTCOUNT(0)), | |
231 | ||
232 | dump_register(GHWPARAMS8), | |
233 | dump_register(DCFG), | |
234 | dump_register(DCTL), | |
235 | dump_register(DEVTEN), | |
236 | dump_register(DSTS), | |
237 | dump_register(DGCMDPAR), | |
238 | dump_register(DGCMD), | |
239 | dump_register(DALEPENA), | |
240 | ||
241 | dump_register(DEPCMDPAR2(0)), | |
242 | dump_register(DEPCMDPAR2(1)), | |
243 | dump_register(DEPCMDPAR2(2)), | |
244 | dump_register(DEPCMDPAR2(3)), | |
245 | dump_register(DEPCMDPAR2(4)), | |
246 | dump_register(DEPCMDPAR2(5)), | |
247 | dump_register(DEPCMDPAR2(6)), | |
248 | dump_register(DEPCMDPAR2(7)), | |
249 | dump_register(DEPCMDPAR2(8)), | |
250 | dump_register(DEPCMDPAR2(9)), | |
251 | dump_register(DEPCMDPAR2(10)), | |
252 | dump_register(DEPCMDPAR2(11)), | |
253 | dump_register(DEPCMDPAR2(12)), | |
254 | dump_register(DEPCMDPAR2(13)), | |
255 | dump_register(DEPCMDPAR2(14)), | |
256 | dump_register(DEPCMDPAR2(15)), | |
257 | dump_register(DEPCMDPAR2(16)), | |
258 | dump_register(DEPCMDPAR2(17)), | |
259 | dump_register(DEPCMDPAR2(18)), | |
260 | dump_register(DEPCMDPAR2(19)), | |
261 | dump_register(DEPCMDPAR2(20)), | |
262 | dump_register(DEPCMDPAR2(21)), | |
263 | dump_register(DEPCMDPAR2(22)), | |
264 | dump_register(DEPCMDPAR2(23)), | |
265 | dump_register(DEPCMDPAR2(24)), | |
266 | dump_register(DEPCMDPAR2(25)), | |
267 | dump_register(DEPCMDPAR2(26)), | |
268 | dump_register(DEPCMDPAR2(27)), | |
269 | dump_register(DEPCMDPAR2(28)), | |
270 | dump_register(DEPCMDPAR2(29)), | |
271 | dump_register(DEPCMDPAR2(30)), | |
272 | dump_register(DEPCMDPAR2(31)), | |
273 | ||
274 | dump_register(DEPCMDPAR1(0)), | |
275 | dump_register(DEPCMDPAR1(1)), | |
276 | dump_register(DEPCMDPAR1(2)), | |
277 | dump_register(DEPCMDPAR1(3)), | |
278 | dump_register(DEPCMDPAR1(4)), | |
279 | dump_register(DEPCMDPAR1(5)), | |
280 | dump_register(DEPCMDPAR1(6)), | |
281 | dump_register(DEPCMDPAR1(7)), | |
282 | dump_register(DEPCMDPAR1(8)), | |
283 | dump_register(DEPCMDPAR1(9)), | |
284 | dump_register(DEPCMDPAR1(10)), | |
285 | dump_register(DEPCMDPAR1(11)), | |
286 | dump_register(DEPCMDPAR1(12)), | |
287 | dump_register(DEPCMDPAR1(13)), | |
288 | dump_register(DEPCMDPAR1(14)), | |
289 | dump_register(DEPCMDPAR1(15)), | |
290 | dump_register(DEPCMDPAR1(16)), | |
291 | dump_register(DEPCMDPAR1(17)), | |
292 | dump_register(DEPCMDPAR1(18)), | |
293 | dump_register(DEPCMDPAR1(19)), | |
294 | dump_register(DEPCMDPAR1(20)), | |
295 | dump_register(DEPCMDPAR1(21)), | |
296 | dump_register(DEPCMDPAR1(22)), | |
297 | dump_register(DEPCMDPAR1(23)), | |
298 | dump_register(DEPCMDPAR1(24)), | |
299 | dump_register(DEPCMDPAR1(25)), | |
300 | dump_register(DEPCMDPAR1(26)), | |
301 | dump_register(DEPCMDPAR1(27)), | |
302 | dump_register(DEPCMDPAR1(28)), | |
303 | dump_register(DEPCMDPAR1(29)), | |
304 | dump_register(DEPCMDPAR1(30)), | |
305 | dump_register(DEPCMDPAR1(31)), | |
306 | ||
307 | dump_register(DEPCMDPAR0(0)), | |
308 | dump_register(DEPCMDPAR0(1)), | |
309 | dump_register(DEPCMDPAR0(2)), | |
310 | dump_register(DEPCMDPAR0(3)), | |
311 | dump_register(DEPCMDPAR0(4)), | |
312 | dump_register(DEPCMDPAR0(5)), | |
313 | dump_register(DEPCMDPAR0(6)), | |
314 | dump_register(DEPCMDPAR0(7)), | |
315 | dump_register(DEPCMDPAR0(8)), | |
316 | dump_register(DEPCMDPAR0(9)), | |
317 | dump_register(DEPCMDPAR0(10)), | |
318 | dump_register(DEPCMDPAR0(11)), | |
319 | dump_register(DEPCMDPAR0(12)), | |
320 | dump_register(DEPCMDPAR0(13)), | |
321 | dump_register(DEPCMDPAR0(14)), | |
322 | dump_register(DEPCMDPAR0(15)), | |
323 | dump_register(DEPCMDPAR0(16)), | |
324 | dump_register(DEPCMDPAR0(17)), | |
325 | dump_register(DEPCMDPAR0(18)), | |
326 | dump_register(DEPCMDPAR0(19)), | |
327 | dump_register(DEPCMDPAR0(20)), | |
328 | dump_register(DEPCMDPAR0(21)), | |
329 | dump_register(DEPCMDPAR0(22)), | |
330 | dump_register(DEPCMDPAR0(23)), | |
331 | dump_register(DEPCMDPAR0(24)), | |
332 | dump_register(DEPCMDPAR0(25)), | |
333 | dump_register(DEPCMDPAR0(26)), | |
334 | dump_register(DEPCMDPAR0(27)), | |
335 | dump_register(DEPCMDPAR0(28)), | |
336 | dump_register(DEPCMDPAR0(29)), | |
337 | dump_register(DEPCMDPAR0(30)), | |
338 | dump_register(DEPCMDPAR0(31)), | |
339 | ||
340 | dump_register(DEPCMD(0)), | |
341 | dump_register(DEPCMD(1)), | |
342 | dump_register(DEPCMD(2)), | |
343 | dump_register(DEPCMD(3)), | |
344 | dump_register(DEPCMD(4)), | |
345 | dump_register(DEPCMD(5)), | |
346 | dump_register(DEPCMD(6)), | |
347 | dump_register(DEPCMD(7)), | |
348 | dump_register(DEPCMD(8)), | |
349 | dump_register(DEPCMD(9)), | |
350 | dump_register(DEPCMD(10)), | |
351 | dump_register(DEPCMD(11)), | |
352 | dump_register(DEPCMD(12)), | |
353 | dump_register(DEPCMD(13)), | |
354 | dump_register(DEPCMD(14)), | |
355 | dump_register(DEPCMD(15)), | |
356 | dump_register(DEPCMD(16)), | |
357 | dump_register(DEPCMD(17)), | |
358 | dump_register(DEPCMD(18)), | |
359 | dump_register(DEPCMD(19)), | |
360 | dump_register(DEPCMD(20)), | |
361 | dump_register(DEPCMD(21)), | |
362 | dump_register(DEPCMD(22)), | |
363 | dump_register(DEPCMD(23)), | |
364 | dump_register(DEPCMD(24)), | |
365 | dump_register(DEPCMD(25)), | |
366 | dump_register(DEPCMD(26)), | |
367 | dump_register(DEPCMD(27)), | |
368 | dump_register(DEPCMD(28)), | |
369 | dump_register(DEPCMD(29)), | |
370 | dump_register(DEPCMD(30)), | |
371 | dump_register(DEPCMD(31)), | |
372 | ||
373 | dump_register(OCFG), | |
374 | dump_register(OCTL), | |
375 | dump_register(OEVTEN), | |
376 | dump_register(OSTS), | |
377 | }; | |
378 | ||
0b9fe32d FB |
379 | static int dwc3_mode_show(struct seq_file *s, void *unused) |
380 | { | |
381 | struct dwc3 *dwc = s->private; | |
382 | unsigned long flags; | |
383 | u32 reg; | |
384 | ||
385 | spin_lock_irqsave(&dwc->lock, flags); | |
386 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); | |
387 | spin_unlock_irqrestore(&dwc->lock, flags); | |
388 | ||
389 | switch (DWC3_GCTL_PRTCAP(reg)) { | |
390 | case DWC3_GCTL_PRTCAP_HOST: | |
391 | seq_printf(s, "host\n"); | |
392 | break; | |
393 | case DWC3_GCTL_PRTCAP_DEVICE: | |
394 | seq_printf(s, "device\n"); | |
395 | break; | |
396 | case DWC3_GCTL_PRTCAP_OTG: | |
397 | seq_printf(s, "OTG\n"); | |
398 | break; | |
399 | default: | |
400 | seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg)); | |
401 | } | |
402 | ||
403 | return 0; | |
404 | } | |
405 | ||
406 | static int dwc3_mode_open(struct inode *inode, struct file *file) | |
407 | { | |
408 | return single_open(file, dwc3_mode_show, inode->i_private); | |
409 | } | |
410 | ||
411 | static ssize_t dwc3_mode_write(struct file *file, | |
412 | const char __user *ubuf, size_t count, loff_t *ppos) | |
413 | { | |
414 | struct seq_file *s = file->private_data; | |
415 | struct dwc3 *dwc = s->private; | |
416 | unsigned long flags; | |
3140e8cb | 417 | u32 mode = 0; |
0b9fe32d FB |
418 | char buf[32]; |
419 | ||
420 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
421 | return -EFAULT; | |
422 | ||
0b9fe32d | 423 | if (!strncmp(buf, "host", 4)) |
3140e8cb | 424 | mode |= DWC3_GCTL_PRTCAP_HOST; |
0b9fe32d FB |
425 | |
426 | if (!strncmp(buf, "device", 6)) | |
3140e8cb | 427 | mode |= DWC3_GCTL_PRTCAP_DEVICE; |
0b9fe32d FB |
428 | |
429 | if (!strncmp(buf, "otg", 3)) | |
3140e8cb | 430 | mode |= DWC3_GCTL_PRTCAP_OTG; |
0b9fe32d | 431 | |
3140e8cb SAS |
432 | if (mode) { |
433 | spin_lock_irqsave(&dwc->lock, flags); | |
434 | dwc3_set_mode(dwc, mode); | |
435 | spin_unlock_irqrestore(&dwc->lock, flags); | |
436 | } | |
0b9fe32d FB |
437 | return count; |
438 | } | |
439 | ||
440 | static const struct file_operations dwc3_mode_fops = { | |
441 | .open = dwc3_mode_open, | |
442 | .write = dwc3_mode_write, | |
443 | .read = seq_read, | |
444 | .llseek = seq_lseek, | |
445 | .release = single_release, | |
446 | }; | |
447 | ||
080d921f FB |
448 | static int dwc3_testmode_show(struct seq_file *s, void *unused) |
449 | { | |
450 | struct dwc3 *dwc = s->private; | |
451 | unsigned long flags; | |
452 | u32 reg; | |
453 | ||
454 | spin_lock_irqsave(&dwc->lock, flags); | |
455 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); | |
456 | reg &= DWC3_DCTL_TSTCTRL_MASK; | |
457 | reg >>= 1; | |
458 | spin_unlock_irqrestore(&dwc->lock, flags); | |
459 | ||
460 | switch (reg) { | |
461 | case 0: | |
462 | seq_printf(s, "no test\n"); | |
463 | break; | |
464 | case TEST_J: | |
465 | seq_printf(s, "test_j\n"); | |
466 | break; | |
467 | case TEST_K: | |
468 | seq_printf(s, "test_k\n"); | |
469 | break; | |
470 | case TEST_SE0_NAK: | |
471 | seq_printf(s, "test_se0_nak\n"); | |
472 | break; | |
473 | case TEST_PACKET: | |
474 | seq_printf(s, "test_packet\n"); | |
475 | break; | |
476 | case TEST_FORCE_EN: | |
477 | seq_printf(s, "test_force_enable\n"); | |
478 | break; | |
479 | default: | |
480 | seq_printf(s, "UNKNOWN %d\n", reg); | |
481 | } | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
486 | static int dwc3_testmode_open(struct inode *inode, struct file *file) | |
487 | { | |
488 | return single_open(file, dwc3_testmode_show, inode->i_private); | |
489 | } | |
490 | ||
491 | static ssize_t dwc3_testmode_write(struct file *file, | |
492 | const char __user *ubuf, size_t count, loff_t *ppos) | |
493 | { | |
494 | struct seq_file *s = file->private_data; | |
495 | struct dwc3 *dwc = s->private; | |
496 | unsigned long flags; | |
497 | u32 testmode = 0; | |
498 | char buf[32]; | |
499 | ||
500 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
501 | return -EFAULT; | |
502 | ||
503 | if (!strncmp(buf, "test_j", 6)) | |
504 | testmode = TEST_J; | |
505 | else if (!strncmp(buf, "test_k", 6)) | |
506 | testmode = TEST_K; | |
09072543 | 507 | else if (!strncmp(buf, "test_se0_nak", 12)) |
080d921f | 508 | testmode = TEST_SE0_NAK; |
09072543 | 509 | else if (!strncmp(buf, "test_packet", 11)) |
080d921f | 510 | testmode = TEST_PACKET; |
09072543 | 511 | else if (!strncmp(buf, "test_force_enable", 17)) |
080d921f FB |
512 | testmode = TEST_FORCE_EN; |
513 | else | |
514 | testmode = 0; | |
515 | ||
516 | spin_lock_irqsave(&dwc->lock, flags); | |
517 | dwc3_gadget_set_test_mode(dwc, testmode); | |
518 | spin_unlock_irqrestore(&dwc->lock, flags); | |
519 | ||
520 | return count; | |
521 | } | |
522 | ||
523 | static const struct file_operations dwc3_testmode_fops = { | |
524 | .open = dwc3_testmode_open, | |
525 | .write = dwc3_testmode_write, | |
526 | .read = seq_read, | |
527 | .llseek = seq_lseek, | |
528 | .release = single_release, | |
529 | }; | |
530 | ||
138801aa FB |
531 | static int dwc3_link_state_show(struct seq_file *s, void *unused) |
532 | { | |
533 | struct dwc3 *dwc = s->private; | |
534 | unsigned long flags; | |
535 | enum dwc3_link_state state; | |
536 | u32 reg; | |
537 | ||
538 | spin_lock_irqsave(&dwc->lock, flags); | |
539 | reg = dwc3_readl(dwc->regs, DWC3_DSTS); | |
540 | state = DWC3_DSTS_USBLNKST(reg); | |
541 | spin_unlock_irqrestore(&dwc->lock, flags); | |
542 | ||
543 | switch (state) { | |
544 | case DWC3_LINK_STATE_U0: | |
545 | seq_printf(s, "U0\n"); | |
546 | break; | |
547 | case DWC3_LINK_STATE_U1: | |
548 | seq_printf(s, "U1\n"); | |
549 | break; | |
550 | case DWC3_LINK_STATE_U2: | |
551 | seq_printf(s, "U2\n"); | |
552 | break; | |
553 | case DWC3_LINK_STATE_U3: | |
554 | seq_printf(s, "U3\n"); | |
555 | break; | |
556 | case DWC3_LINK_STATE_SS_DIS: | |
557 | seq_printf(s, "SS.Disabled\n"); | |
558 | break; | |
559 | case DWC3_LINK_STATE_RX_DET: | |
560 | seq_printf(s, "Rx.Detect\n"); | |
561 | break; | |
562 | case DWC3_LINK_STATE_SS_INACT: | |
563 | seq_printf(s, "SS.Inactive\n"); | |
564 | break; | |
565 | case DWC3_LINK_STATE_POLL: | |
566 | seq_printf(s, "Poll\n"); | |
567 | break; | |
568 | case DWC3_LINK_STATE_RECOV: | |
569 | seq_printf(s, "Recovery\n"); | |
570 | break; | |
571 | case DWC3_LINK_STATE_HRESET: | |
572 | seq_printf(s, "HRESET\n"); | |
573 | break; | |
574 | case DWC3_LINK_STATE_CMPLY: | |
575 | seq_printf(s, "Compliance\n"); | |
576 | break; | |
577 | case DWC3_LINK_STATE_LPBK: | |
578 | seq_printf(s, "Loopback\n"); | |
579 | break; | |
6b2a0eb8 FB |
580 | case DWC3_LINK_STATE_RESET: |
581 | seq_printf(s, "Reset\n"); | |
582 | break; | |
583 | case DWC3_LINK_STATE_RESUME: | |
584 | seq_printf(s, "Resume\n"); | |
585 | break; | |
138801aa | 586 | default: |
5b9ec339 | 587 | seq_printf(s, "UNKNOWN %d\n", state); |
138801aa FB |
588 | } |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
593 | static int dwc3_link_state_open(struct inode *inode, struct file *file) | |
594 | { | |
595 | return single_open(file, dwc3_link_state_show, inode->i_private); | |
596 | } | |
597 | ||
598 | static ssize_t dwc3_link_state_write(struct file *file, | |
599 | const char __user *ubuf, size_t count, loff_t *ppos) | |
600 | { | |
601 | struct seq_file *s = file->private_data; | |
602 | struct dwc3 *dwc = s->private; | |
603 | unsigned long flags; | |
604 | enum dwc3_link_state state = 0; | |
605 | char buf[32]; | |
606 | ||
607 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
608 | return -EFAULT; | |
609 | ||
610 | if (!strncmp(buf, "SS.Disabled", 11)) | |
611 | state = DWC3_LINK_STATE_SS_DIS; | |
612 | else if (!strncmp(buf, "Rx.Detect", 9)) | |
613 | state = DWC3_LINK_STATE_RX_DET; | |
614 | else if (!strncmp(buf, "SS.Inactive", 11)) | |
615 | state = DWC3_LINK_STATE_SS_INACT; | |
616 | else if (!strncmp(buf, "Recovery", 8)) | |
617 | state = DWC3_LINK_STATE_RECOV; | |
618 | else if (!strncmp(buf, "Compliance", 10)) | |
619 | state = DWC3_LINK_STATE_CMPLY; | |
620 | else if (!strncmp(buf, "Loopback", 8)) | |
621 | state = DWC3_LINK_STATE_LPBK; | |
622 | else | |
623 | return -EINVAL; | |
624 | ||
625 | spin_lock_irqsave(&dwc->lock, flags); | |
626 | dwc3_gadget_set_link_state(dwc, state); | |
627 | spin_unlock_irqrestore(&dwc->lock, flags); | |
628 | ||
629 | return count; | |
630 | } | |
631 | ||
632 | static const struct file_operations dwc3_link_state_fops = { | |
633 | .open = dwc3_link_state_open, | |
634 | .write = dwc3_link_state_write, | |
635 | .read = seq_read, | |
636 | .llseek = seq_lseek, | |
637 | .release = single_release, | |
638 | }; | |
639 | ||
41ac7b3a | 640 | int dwc3_debugfs_init(struct dwc3 *dwc) |
72246da4 FB |
641 | { |
642 | struct dentry *root; | |
643 | struct dentry *file; | |
644 | int ret; | |
645 | ||
646 | root = debugfs_create_dir(dev_name(dwc->dev), NULL); | |
3d4c0d4f FB |
647 | if (!root) { |
648 | ret = -ENOMEM; | |
72246da4 FB |
649 | goto err0; |
650 | } | |
651 | ||
652 | dwc->root = root; | |
653 | ||
d7668024 FB |
654 | dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); |
655 | if (!dwc->regset) { | |
656 | ret = -ENOMEM; | |
657 | goto err1; | |
658 | } | |
659 | ||
660 | dwc->regset->regs = dwc3_regs; | |
661 | dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); | |
662 | dwc->regset->base = dwc->regs; | |
663 | ||
664 | file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset); | |
3d4c0d4f FB |
665 | if (!file) { |
666 | ret = -ENOMEM; | |
72246da4 FB |
667 | goto err1; |
668 | } | |
0b9fe32d | 669 | |
dbfff05d FB |
670 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) { |
671 | file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, | |
672 | dwc, &dwc3_mode_fops); | |
673 | if (!file) { | |
674 | ret = -ENOMEM; | |
675 | goto err1; | |
676 | } | |
0b9fe32d FB |
677 | } |
678 | ||
dbfff05d FB |
679 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) || |
680 | IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { | |
681 | file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root, | |
682 | dwc, &dwc3_testmode_fops); | |
683 | if (!file) { | |
684 | ret = -ENOMEM; | |
685 | goto err1; | |
686 | } | |
687 | ||
688 | file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root, | |
689 | dwc, &dwc3_link_state_fops); | |
690 | if (!file) { | |
691 | ret = -ENOMEM; | |
692 | goto err1; | |
693 | } | |
138801aa FB |
694 | } |
695 | ||
72246da4 FB |
696 | return 0; |
697 | ||
698 | err1: | |
699 | debugfs_remove_recursive(root); | |
700 | ||
701 | err0: | |
702 | return ret; | |
703 | } | |
704 | ||
fb4e98ab | 705 | void dwc3_debugfs_exit(struct dwc3 *dwc) |
72246da4 FB |
706 | { |
707 | debugfs_remove_recursive(dwc->root); | |
708 | dwc->root = NULL; | |
709 | } |