1#include <linux/kernel.h>
2#include <linux/device.h>
3#include <linux/types.h>
4#include <linux/spinlock.h>
5#include <linux/debugfs.h>
6#include <linux/seq_file.h>
7#include <linux/uaccess.h>
8#include <linux/usb/ch9.h>
9#include <linux/usb/gadget.h>
10#include <linux/usb/phy.h>
11#include <linux/usb/otg.h>
12#include <linux/usb/otg-fsm.h>
13#include <linux/usb/chipidea.h>
14
15#include "ci.h"
16#include "udc.h"
17#include "bits.h"
18#include "otg.h"
19
20
21
22
23static int ci_device_show(struct seq_file *s, void *data)
24{
25 struct ci_hdrc *ci = s->private;
26 struct usb_gadget *gadget = &ci->gadget;
27
28 seq_printf(s, "speed = %d\n", gadget->speed);
29 seq_printf(s, "max_speed = %d\n", gadget->max_speed);
30 seq_printf(s, "is_otg = %d\n", gadget->is_otg);
31 seq_printf(s, "is_a_peripheral = %d\n", gadget->is_a_peripheral);
32 seq_printf(s, "b_hnp_enable = %d\n", gadget->b_hnp_enable);
33 seq_printf(s, "a_hnp_support = %d\n", gadget->a_hnp_support);
34 seq_printf(s, "a_alt_hnp_support = %d\n", gadget->a_alt_hnp_support);
35 seq_printf(s, "name = %s\n",
36 (gadget->name ? gadget->name : ""));
37
38 if (!ci->driver)
39 return 0;
40
41 seq_printf(s, "gadget function = %s\n",
42 (ci->driver->function ? ci->driver->function : ""));
43 seq_printf(s, "gadget max speed = %d\n", ci->driver->max_speed);
44
45 return 0;
46}
47
48static int ci_device_open(struct inode *inode, struct file *file)
49{
50 return single_open(file, ci_device_show, inode->i_private);
51}
52
53static const struct file_operations ci_device_fops = {
54 .open = ci_device_open,
55 .read = seq_read,
56 .llseek = seq_lseek,
57 .release = single_release,
58};
59
60
61
62
63static int ci_port_test_show(struct seq_file *s, void *data)
64{
65 struct ci_hdrc *ci = s->private;
66 unsigned long flags;
67 unsigned mode;
68
69 pm_runtime_get_sync(ci->dev);
70 spin_lock_irqsave(&ci->lock, flags);
71 mode = hw_port_test_get(ci);
72 spin_unlock_irqrestore(&ci->lock, flags);
73 pm_runtime_put_sync(ci->dev);
74
75 seq_printf(s, "mode = %u\n", mode);
76
77 return 0;
78}
79
80
81
82
83static ssize_t ci_port_test_write(struct file *file, const char __user *ubuf,
84 size_t count, loff_t *ppos)
85{
86 struct seq_file *s = file->private_data;
87 struct ci_hdrc *ci = s->private;
88 unsigned long flags;
89 unsigned mode;
90 char buf[32];
91 int ret;
92
93 count = min_t(size_t, sizeof(buf) - 1, count);
94 if (copy_from_user(buf, ubuf, count))
95 return -EFAULT;
96
97
98 buf[count] = '\0';
99
100 if (sscanf(buf, "%u", &mode) != 1)
101 return -EINVAL;
102
103 if (mode > 255)
104 return -EBADRQC;
105
106 pm_runtime_get_sync(ci->dev);
107 spin_lock_irqsave(&ci->lock, flags);
108 ret = hw_port_test_set(ci, mode);
109 spin_unlock_irqrestore(&ci->lock, flags);
110 pm_runtime_put_sync(ci->dev);
111
112 return ret ? ret : count;
113}
114
115static int ci_port_test_open(struct inode *inode, struct file *file)
116{
117 return single_open(file, ci_port_test_show, inode->i_private);
118}
119
120static const struct file_operations ci_port_test_fops = {
121 .open = ci_port_test_open,
122 .write = ci_port_test_write,
123 .read = seq_read,
124 .llseek = seq_lseek,
125 .release = single_release,
126};
127
128
129
130
131static int ci_qheads_show(struct seq_file *s, void *data)
132{
133 struct ci_hdrc *ci = s->private;
134 unsigned long flags;
135 unsigned i, j;
136
137 if (ci->role != CI_ROLE_GADGET) {
138 seq_printf(s, "not in gadget mode\n");
139 return 0;
140 }
141
142 spin_lock_irqsave(&ci->lock, flags);
143 for (i = 0; i < ci->hw_ep_max/2; i++) {
144 struct ci_hw_ep *hweprx = &ci->ci_hw_ep[i];
145 struct ci_hw_ep *hweptx =
146 &ci->ci_hw_ep[i + ci->hw_ep_max/2];
147 seq_printf(s, "EP=%02i: RX=%08X TX=%08X\n",
148 i, (u32)hweprx->qh.dma, (u32)hweptx->qh.dma);
149 for (j = 0; j < (sizeof(struct ci_hw_qh)/sizeof(u32)); j++)
150 seq_printf(s, " %04X: %08X %08X\n", j,
151 *((u32 *)hweprx->qh.ptr + j),
152 *((u32 *)hweptx->qh.ptr + j));
153 }
154 spin_unlock_irqrestore(&ci->lock, flags);
155
156 return 0;
157}
158
159static int ci_qheads_open(struct inode *inode, struct file *file)
160{
161 return single_open(file, ci_qheads_show, inode->i_private);
162}
163
164static const struct file_operations ci_qheads_fops = {
165 .open = ci_qheads_open,
166 .read = seq_read,
167 .llseek = seq_lseek,
168 .release = single_release,
169};
170
171
172
173
174static int ci_requests_show(struct seq_file *s, void *data)
175{
176 struct ci_hdrc *ci = s->private;
177 unsigned long flags;
178 struct ci_hw_req *req = NULL;
179 struct td_node *node, *tmpnode;
180 unsigned i, j, qsize = sizeof(struct ci_hw_td)/sizeof(u32);
181
182 if (ci->role != CI_ROLE_GADGET) {
183 seq_printf(s, "not in gadget mode\n");
184 return 0;
185 }
186
187 spin_lock_irqsave(&ci->lock, flags);
188 for (i = 0; i < ci->hw_ep_max; i++)
189 list_for_each_entry(req, &ci->ci_hw_ep[i].qh.queue, queue) {
190 list_for_each_entry_safe(node, tmpnode, &req->tds, td) {
191 seq_printf(s, "EP=%02i: TD=%08X %s\n",
192 i % (ci->hw_ep_max / 2),
193 (u32)node->dma,
194 ((i < ci->hw_ep_max/2) ?
195 "RX" : "TX"));
196
197 for (j = 0; j < qsize; j++)
198 seq_printf(s, " %04X: %08X\n", j,
199 *((u32 *)node->ptr + j));
200 }
201 }
202 spin_unlock_irqrestore(&ci->lock, flags);
203
204 return 0;
205}
206
207static int ci_requests_open(struct inode *inode, struct file *file)
208{
209 return single_open(file, ci_requests_show, inode->i_private);
210}
211
212static const struct file_operations ci_requests_fops = {
213 .open = ci_requests_open,
214 .read = seq_read,
215 .llseek = seq_lseek,
216 .release = single_release,
217};
218
219static int ci_otg_show(struct seq_file *s, void *unused)
220{
221 struct ci_hdrc *ci = s->private;
222 struct otg_fsm *fsm;
223
224 if (!ci || !ci_otg_is_fsm_mode(ci))
225 return 0;
226
227 fsm = &ci->fsm;
228
229
230 seq_printf(s, "OTG state: %s\n\n",
231 usb_otg_state_string(ci->otg.state));
232
233
234 seq_printf(s, "a_bus_drop: %d\n", fsm->a_bus_drop);
235
236 seq_printf(s, "a_bus_req: %d\n", fsm->a_bus_req);
237
238 seq_printf(s, "a_srp_det: %d\n", fsm->a_srp_det);
239
240 seq_printf(s, "a_vbus_vld: %d\n", fsm->a_vbus_vld);
241
242 seq_printf(s, "b_conn: %d\n", fsm->b_conn);
243
244 seq_printf(s, "adp_change: %d\n", fsm->adp_change);
245
246 seq_printf(s, "power_up: %d\n", fsm->power_up);
247
248 seq_printf(s, "a_bus_resume: %d\n", fsm->a_bus_resume);
249
250 seq_printf(s, "a_bus_suspend: %d\n", fsm->a_bus_suspend);
251
252 seq_printf(s, "a_conn: %d\n", fsm->a_conn);
253
254 seq_printf(s, "b_bus_req: %d\n", fsm->b_bus_req);
255
256 seq_printf(s, "b_bus_suspend: %d\n", fsm->b_bus_suspend);
257
258 seq_printf(s, "b_se0_srp: %d\n", fsm->b_se0_srp);
259
260 seq_printf(s, "b_ssend_srp: %d\n", fsm->b_ssend_srp);
261
262 seq_printf(s, "b_sess_vld: %d\n", fsm->b_sess_vld);
263
264 seq_printf(s, "b_srp_done: %d\n", fsm->b_srp_done);
265
266 seq_printf(s, "drv_vbus: %d\n", fsm->drv_vbus);
267
268 seq_printf(s, "loc_conn: %d\n", fsm->loc_conn);
269
270 seq_printf(s, "loc_sof: %d\n", fsm->loc_sof);
271
272 seq_printf(s, "adp_prb: %d\n", fsm->adp_prb);
273
274 seq_printf(s, "id: %d\n", fsm->id);
275
276 seq_printf(s, "protocol: %d\n", fsm->protocol);
277
278 return 0;
279}
280
281static int ci_otg_open(struct inode *inode, struct file *file)
282{
283 return single_open(file, ci_otg_show, inode->i_private);
284}
285
286static const struct file_operations ci_otg_fops = {
287 .open = ci_otg_open,
288 .read = seq_read,
289 .llseek = seq_lseek,
290 .release = single_release,
291};
292
293static int ci_role_show(struct seq_file *s, void *data)
294{
295 struct ci_hdrc *ci = s->private;
296
297 seq_printf(s, "%s\n", ci_role(ci)->name);
298
299 return 0;
300}
301
302static ssize_t ci_role_write(struct file *file, const char __user *ubuf,
303 size_t count, loff_t *ppos)
304{
305 struct seq_file *s = file->private_data;
306 struct ci_hdrc *ci = s->private;
307 enum ci_role role;
308 char buf[8];
309 int ret;
310
311 if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
312 return -EFAULT;
313
314 for (role = CI_ROLE_HOST; role < CI_ROLE_END; role++)
315 if (ci->roles[role] &&
316 !strncmp(buf, ci->roles[role]->name,
317 strlen(ci->roles[role]->name)))
318 break;
319
320 if (role == CI_ROLE_END || role == ci->role)
321 return -EINVAL;
322
323 pm_runtime_get_sync(ci->dev);
324 disable_irq(ci->irq);
325 ci_role_stop(ci);
326 ret = ci_role_start(ci, role);
327 enable_irq(ci->irq);
328 pm_runtime_put_sync(ci->dev);
329
330 return ret ? ret : count;
331}
332
333static int ci_role_open(struct inode *inode, struct file *file)
334{
335 return single_open(file, ci_role_show, inode->i_private);
336}
337
338static const struct file_operations ci_role_fops = {
339 .open = ci_role_open,
340 .write = ci_role_write,
341 .read = seq_read,
342 .llseek = seq_lseek,
343 .release = single_release,
344};
345
346static int ci_registers_show(struct seq_file *s, void *unused)
347{
348 struct ci_hdrc *ci = s->private;
349 u32 tmp_reg;
350
351 if (!ci || ci->in_lpm)
352 return -EPERM;
353
354
355 tmp_reg = hw_read_intr_enable(ci);
356 seq_printf(s, "USBINTR reg: %08x\n", tmp_reg);
357
358 tmp_reg = hw_read_intr_status(ci);
359 seq_printf(s, "USBSTS reg: %08x\n", tmp_reg);
360
361 tmp_reg = hw_read(ci, OP_USBMODE, ~0);
362 seq_printf(s, "USBMODE reg: %08x\n", tmp_reg);
363
364 tmp_reg = hw_read(ci, OP_USBCMD, ~0);
365 seq_printf(s, "USBCMD reg: %08x\n", tmp_reg);
366
367 tmp_reg = hw_read(ci, OP_PORTSC, ~0);
368 seq_printf(s, "PORTSC reg: %08x\n", tmp_reg);
369
370 if (ci->is_otg) {
371 tmp_reg = hw_read_otgsc(ci, ~0);
372 seq_printf(s, "OTGSC reg: %08x\n", tmp_reg);
373 }
374
375 return 0;
376}
377
378static int ci_registers_open(struct inode *inode, struct file *file)
379{
380 return single_open(file, ci_registers_show, inode->i_private);
381}
382
383static const struct file_operations ci_registers_fops = {
384 .open = ci_registers_open,
385 .read = seq_read,
386 .llseek = seq_lseek,
387 .release = single_release,
388};
389
390
391
392
393
394
395
396int dbg_create_files(struct ci_hdrc *ci)
397{
398 struct dentry *dent;
399
400 ci->debugfs = debugfs_create_dir(dev_name(ci->dev), NULL);
401 if (!ci->debugfs)
402 return -ENOMEM;
403
404 dent = debugfs_create_file("device", S_IRUGO, ci->debugfs, ci,
405 &ci_device_fops);
406 if (!dent)
407 goto err;
408
409 dent = debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs,
410 ci, &ci_port_test_fops);
411 if (!dent)
412 goto err;
413
414 dent = debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci,
415 &ci_qheads_fops);
416 if (!dent)
417 goto err;
418
419 dent = debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci,
420 &ci_requests_fops);
421 if (!dent)
422 goto err;
423
424 if (ci_otg_is_fsm_mode(ci)) {
425 dent = debugfs_create_file("otg", S_IRUGO, ci->debugfs, ci,
426 &ci_otg_fops);
427 if (!dent)
428 goto err;
429 }
430
431 dent = debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci,
432 &ci_role_fops);
433 if (!dent)
434 goto err;
435
436 dent = debugfs_create_file("registers", S_IRUGO, ci->debugfs, ci,
437 &ci_registers_fops);
438
439 if (dent)
440 return 0;
441err:
442 debugfs_remove_recursive(ci->debugfs);
443 return -ENOMEM;
444}
445
446
447
448
449
450void dbg_remove_files(struct ci_hdrc *ci)
451{
452 debugfs_remove_recursive(ci->debugfs);
453}
454
