Commit | Line | Data |
---|---|---|
e443b333 | 1 | #include <linux/kernel.h> |
3c37bb68 AS |
2 | #include <linux/device.h> |
3 | #include <linux/types.h> | |
4 | #include <linux/spinlock.h> | |
2d651289 AS |
5 | #include <linux/debugfs.h> |
6 | #include <linux/seq_file.h> | |
7 | #include <linux/uaccess.h> | |
e443b333 AS |
8 | #include <linux/usb/ch9.h> |
9 | #include <linux/usb/gadget.h> | |
88bdffc8 LJ |
10 | #include <linux/usb/phy.h> |
11 | #include <linux/usb/otg.h> | |
12 | #include <linux/usb/otg-fsm.h> | |
b0930d4c | 13 | #include <linux/usb/chipidea.h> |
e443b333 AS |
14 | |
15 | #include "ci.h" | |
16 | #include "udc.h" | |
17 | #include "bits.h" | |
c4a8b639 | 18 | #include "otg.h" |
e443b333 | 19 | |
e443b333 | 20 | /** |
2d651289 | 21 | * ci_device_show: prints information about device capabilities and status |
e443b333 | 22 | */ |
2d651289 | 23 | static int ci_device_show(struct seq_file *s, void *data) |
e443b333 | 24 | { |
8e22978c | 25 | struct ci_hdrc *ci = s->private; |
2d651289 | 26 | struct usb_gadget *gadget = &ci->gadget; |
e443b333 | 27 | |
2d651289 AS |
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; | |
e443b333 | 40 | |
2d651289 AS |
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); | |
e443b333 | 44 | |
e443b333 AS |
45 | return 0; |
46 | } | |
47 | ||
2d651289 | 48 | static int ci_device_open(struct inode *inode, struct file *file) |
e443b333 | 49 | { |
2d651289 | 50 | return single_open(file, ci_device_show, inode->i_private); |
e443b333 AS |
51 | } |
52 | ||
2d651289 AS |
53 | static 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 | }; | |
e443b333 | 59 | |
e443b333 | 60 | /** |
2d651289 | 61 | * ci_port_test_show: reads port test mode |
e443b333 | 62 | */ |
2d651289 | 63 | static int ci_port_test_show(struct seq_file *s, void *data) |
e443b333 | 64 | { |
8e22978c | 65 | struct ci_hdrc *ci = s->private; |
e443b333 AS |
66 | unsigned long flags; |
67 | unsigned mode; | |
68 | ||
bc249379 | 69 | pm_runtime_get_sync(ci->dev); |
26c696c6 RZ |
70 | spin_lock_irqsave(&ci->lock, flags); |
71 | mode = hw_port_test_get(ci); | |
72 | spin_unlock_irqrestore(&ci->lock, flags); | |
bc249379 | 73 | pm_runtime_put_sync(ci->dev); |
e443b333 | 74 | |
2d651289 AS |
75 | seq_printf(s, "mode = %u\n", mode); |
76 | ||
77 | return 0; | |
e443b333 AS |
78 | } |
79 | ||
80 | /** | |
2d651289 | 81 | * ci_port_test_write: writes port test mode |
e443b333 | 82 | */ |
2d651289 AS |
83 | static ssize_t ci_port_test_write(struct file *file, const char __user *ubuf, |
84 | size_t count, loff_t *ppos) | |
e443b333 | 85 | { |
2d651289 | 86 | struct seq_file *s = file->private_data; |
8e22978c | 87 | struct ci_hdrc *ci = s->private; |
e443b333 AS |
88 | unsigned long flags; |
89 | unsigned mode; | |
2d651289 AS |
90 | char buf[32]; |
91 | int ret; | |
e443b333 | 92 | |
bd5fb0ae HS |
93 | count = min_t(size_t, sizeof(buf) - 1, count); |
94 | if (copy_from_user(buf, ubuf, count)) | |
2d651289 | 95 | return -EFAULT; |
e443b333 | 96 | |
bd5fb0ae HS |
97 | /* sscanf requires a zero terminated string */ |
98 | buf[count] = '\0'; | |
99 | ||
2d651289 AS |
100 | if (sscanf(buf, "%u", &mode) != 1) |
101 | return -EINVAL; | |
e443b333 | 102 | |
a4de018d A |
103 | if (mode > 255) |
104 | return -EBADRQC; | |
105 | ||
bc249379 | 106 | pm_runtime_get_sync(ci->dev); |
26c696c6 | 107 | spin_lock_irqsave(&ci->lock, flags); |
2d651289 | 108 | ret = hw_port_test_set(ci, mode); |
26c696c6 | 109 | spin_unlock_irqrestore(&ci->lock, flags); |
bc249379 | 110 | pm_runtime_put_sync(ci->dev); |
e443b333 | 111 | |
2d651289 | 112 | return ret ? ret : count; |
e443b333 | 113 | } |
2d651289 AS |
114 | |
115 | static 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 | ||
120 | static 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 | }; | |
e443b333 AS |
127 | |
128 | /** | |
2d651289 | 129 | * ci_qheads_show: DMA contents of all queue heads |
e443b333 | 130 | */ |
2d651289 | 131 | static int ci_qheads_show(struct seq_file *s, void *data) |
e443b333 | 132 | { |
8e22978c | 133 | struct ci_hdrc *ci = s->private; |
e443b333 | 134 | unsigned long flags; |
2d651289 | 135 | unsigned i, j; |
e443b333 | 136 | |
2d651289 AS |
137 | if (ci->role != CI_ROLE_GADGET) { |
138 | seq_printf(s, "not in gadget mode\n"); | |
e443b333 AS |
139 | return 0; |
140 | } | |
141 | ||
26c696c6 RZ |
142 | spin_lock_irqsave(&ci->lock, flags); |
143 | for (i = 0; i < ci->hw_ep_max/2; i++) { | |
8e22978c AS |
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]; | |
2d651289 | 147 | seq_printf(s, "EP=%02i: RX=%08X TX=%08X\n", |
2dbc5c4c | 148 | i, (u32)hweprx->qh.dma, (u32)hweptx->qh.dma); |
8e22978c | 149 | for (j = 0; j < (sizeof(struct ci_hw_qh)/sizeof(u32)); j++) |
2d651289 | 150 | seq_printf(s, " %04X: %08X %08X\n", j, |
2dbc5c4c AS |
151 | *((u32 *)hweprx->qh.ptr + j), |
152 | *((u32 *)hweptx->qh.ptr + j)); | |
e443b333 | 153 | } |
26c696c6 | 154 | spin_unlock_irqrestore(&ci->lock, flags); |
e443b333 | 155 | |
2d651289 | 156 | return 0; |
e443b333 | 157 | } |
e443b333 | 158 | |
2d651289 | 159 | static int ci_qheads_open(struct inode *inode, struct file *file) |
e443b333 | 160 | { |
2d651289 | 161 | return single_open(file, ci_qheads_show, inode->i_private); |
e443b333 AS |
162 | } |
163 | ||
2d651289 AS |
164 | static 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 | }; | |
e443b333 AS |
170 | |
171 | /** | |
2d651289 | 172 | * ci_requests_show: DMA contents of all requests currently queued (all endpts) |
e443b333 | 173 | */ |
2d651289 | 174 | static int ci_requests_show(struct seq_file *s, void *data) |
e443b333 | 175 | { |
8e22978c | 176 | struct ci_hdrc *ci = s->private; |
e443b333 AS |
177 | unsigned long flags; |
178 | struct list_head *ptr = NULL; | |
8e22978c | 179 | struct ci_hw_req *req = NULL; |
cc9e6c49 | 180 | struct td_node *node, *tmpnode; |
8e22978c | 181 | unsigned i, j, qsize = sizeof(struct ci_hw_td)/sizeof(u32); |
e443b333 | 182 | |
2d651289 AS |
183 | if (ci->role != CI_ROLE_GADGET) { |
184 | seq_printf(s, "not in gadget mode\n"); | |
e443b333 AS |
185 | return 0; |
186 | } | |
187 | ||
26c696c6 RZ |
188 | spin_lock_irqsave(&ci->lock, flags); |
189 | for (i = 0; i < ci->hw_ep_max; i++) | |
8e22978c AS |
190 | list_for_each(ptr, &ci->ci_hw_ep[i].qh.queue) { |
191 | req = list_entry(ptr, struct ci_hw_req, queue); | |
e443b333 | 192 | |
cc9e6c49 MG |
193 | list_for_each_entry_safe(node, tmpnode, &req->tds, td) { |
194 | seq_printf(s, "EP=%02i: TD=%08X %s\n", | |
195 | i % (ci->hw_ep_max / 2), | |
196 | (u32)node->dma, | |
197 | ((i < ci->hw_ep_max/2) ? | |
198 | "RX" : "TX")); | |
199 | ||
200 | for (j = 0; j < qsize; j++) | |
201 | seq_printf(s, " %04X: %08X\n", j, | |
202 | *((u32 *)node->ptr + j)); | |
203 | } | |
e443b333 | 204 | } |
26c696c6 | 205 | spin_unlock_irqrestore(&ci->lock, flags); |
e443b333 | 206 | |
2d651289 AS |
207 | return 0; |
208 | } | |
209 | ||
210 | static int ci_requests_open(struct inode *inode, struct file *file) | |
211 | { | |
212 | return single_open(file, ci_requests_show, inode->i_private); | |
e443b333 | 213 | } |
2d651289 AS |
214 | |
215 | static const struct file_operations ci_requests_fops = { | |
216 | .open = ci_requests_open, | |
217 | .read = seq_read, | |
218 | .llseek = seq_lseek, | |
219 | .release = single_release, | |
220 | }; | |
e443b333 | 221 | |
df40f8d3 | 222 | static int ci_otg_show(struct seq_file *s, void *unused) |
88bdffc8 LJ |
223 | { |
224 | struct ci_hdrc *ci = s->private; | |
225 | struct otg_fsm *fsm; | |
226 | ||
227 | if (!ci || !ci_otg_is_fsm_mode(ci)) | |
228 | return 0; | |
229 | ||
230 | fsm = &ci->fsm; | |
231 | ||
232 | /* ------ State ----- */ | |
233 | seq_printf(s, "OTG state: %s\n\n", | |
ef44cb42 | 234 | usb_otg_state_string(ci->otg.state)); |
88bdffc8 LJ |
235 | |
236 | /* ------ State Machine Variables ----- */ | |
237 | seq_printf(s, "a_bus_drop: %d\n", fsm->a_bus_drop); | |
238 | ||
239 | seq_printf(s, "a_bus_req: %d\n", fsm->a_bus_req); | |
240 | ||
241 | seq_printf(s, "a_srp_det: %d\n", fsm->a_srp_det); | |
242 | ||
243 | seq_printf(s, "a_vbus_vld: %d\n", fsm->a_vbus_vld); | |
244 | ||
245 | seq_printf(s, "b_conn: %d\n", fsm->b_conn); | |
246 | ||
247 | seq_printf(s, "adp_change: %d\n", fsm->adp_change); | |
248 | ||
249 | seq_printf(s, "power_up: %d\n", fsm->power_up); | |
250 | ||
251 | seq_printf(s, "a_bus_resume: %d\n", fsm->a_bus_resume); | |
252 | ||
253 | seq_printf(s, "a_bus_suspend: %d\n", fsm->a_bus_suspend); | |
254 | ||
255 | seq_printf(s, "a_conn: %d\n", fsm->a_conn); | |
256 | ||
257 | seq_printf(s, "b_bus_req: %d\n", fsm->b_bus_req); | |
258 | ||
259 | seq_printf(s, "b_bus_suspend: %d\n", fsm->b_bus_suspend); | |
260 | ||
261 | seq_printf(s, "b_se0_srp: %d\n", fsm->b_se0_srp); | |
262 | ||
263 | seq_printf(s, "b_ssend_srp: %d\n", fsm->b_ssend_srp); | |
264 | ||
265 | seq_printf(s, "b_sess_vld: %d\n", fsm->b_sess_vld); | |
266 | ||
267 | seq_printf(s, "b_srp_done: %d\n", fsm->b_srp_done); | |
268 | ||
269 | seq_printf(s, "drv_vbus: %d\n", fsm->drv_vbus); | |
270 | ||
271 | seq_printf(s, "loc_conn: %d\n", fsm->loc_conn); | |
272 | ||
273 | seq_printf(s, "loc_sof: %d\n", fsm->loc_sof); | |
274 | ||
275 | seq_printf(s, "adp_prb: %d\n", fsm->adp_prb); | |
276 | ||
277 | seq_printf(s, "id: %d\n", fsm->id); | |
278 | ||
279 | seq_printf(s, "protocol: %d\n", fsm->protocol); | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
284 | static int ci_otg_open(struct inode *inode, struct file *file) | |
285 | { | |
286 | return single_open(file, ci_otg_show, inode->i_private); | |
287 | } | |
288 | ||
289 | static const struct file_operations ci_otg_fops = { | |
290 | .open = ci_otg_open, | |
291 | .read = seq_read, | |
292 | .llseek = seq_lseek, | |
293 | .release = single_release, | |
294 | }; | |
295 | ||
c8e333a3 AS |
296 | static int ci_role_show(struct seq_file *s, void *data) |
297 | { | |
8e22978c | 298 | struct ci_hdrc *ci = s->private; |
c8e333a3 AS |
299 | |
300 | seq_printf(s, "%s\n", ci_role(ci)->name); | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
305 | static ssize_t ci_role_write(struct file *file, const char __user *ubuf, | |
306 | size_t count, loff_t *ppos) | |
307 | { | |
308 | struct seq_file *s = file->private_data; | |
8e22978c | 309 | struct ci_hdrc *ci = s->private; |
c8e333a3 AS |
310 | enum ci_role role; |
311 | char buf[8]; | |
312 | int ret; | |
313 | ||
314 | if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
315 | return -EFAULT; | |
316 | ||
317 | for (role = CI_ROLE_HOST; role < CI_ROLE_END; role++) | |
318 | if (ci->roles[role] && | |
319 | !strncmp(buf, ci->roles[role]->name, | |
320 | strlen(ci->roles[role]->name))) | |
321 | break; | |
322 | ||
323 | if (role == CI_ROLE_END || role == ci->role) | |
324 | return -EINVAL; | |
325 | ||
bc249379 | 326 | pm_runtime_get_sync(ci->dev); |
251b3c8b | 327 | disable_irq(ci->irq); |
c8e333a3 AS |
328 | ci_role_stop(ci); |
329 | ret = ci_role_start(ci, role); | |
251b3c8b | 330 | enable_irq(ci->irq); |
bc249379 | 331 | pm_runtime_put_sync(ci->dev); |
c8e333a3 AS |
332 | |
333 | return ret ? ret : count; | |
334 | } | |
335 | ||
336 | static int ci_role_open(struct inode *inode, struct file *file) | |
337 | { | |
338 | return single_open(file, ci_role_show, inode->i_private); | |
339 | } | |
340 | ||
341 | static const struct file_operations ci_role_fops = { | |
342 | .open = ci_role_open, | |
343 | .write = ci_role_write, | |
344 | .read = seq_read, | |
345 | .llseek = seq_lseek, | |
346 | .release = single_release, | |
347 | }; | |
348 | ||
df40f8d3 | 349 | static int ci_registers_show(struct seq_file *s, void *unused) |
c4a8b639 LJ |
350 | { |
351 | struct ci_hdrc *ci = s->private; | |
352 | u32 tmp_reg; | |
353 | ||
0c4d6af4 LJ |
354 | if (!ci || ci->in_lpm) |
355 | return -EPERM; | |
c4a8b639 LJ |
356 | |
357 | /* ------ Registers ----- */ | |
358 | tmp_reg = hw_read_intr_enable(ci); | |
359 | seq_printf(s, "USBINTR reg: %08x\n", tmp_reg); | |
360 | ||
361 | tmp_reg = hw_read_intr_status(ci); | |
362 | seq_printf(s, "USBSTS reg: %08x\n", tmp_reg); | |
363 | ||
364 | tmp_reg = hw_read(ci, OP_USBMODE, ~0); | |
365 | seq_printf(s, "USBMODE reg: %08x\n", tmp_reg); | |
366 | ||
367 | tmp_reg = hw_read(ci, OP_USBCMD, ~0); | |
368 | seq_printf(s, "USBCMD reg: %08x\n", tmp_reg); | |
369 | ||
370 | tmp_reg = hw_read(ci, OP_PORTSC, ~0); | |
371 | seq_printf(s, "PORTSC reg: %08x\n", tmp_reg); | |
372 | ||
373 | if (ci->is_otg) { | |
374 | tmp_reg = hw_read_otgsc(ci, ~0); | |
375 | seq_printf(s, "OTGSC reg: %08x\n", tmp_reg); | |
376 | } | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | static int ci_registers_open(struct inode *inode, struct file *file) | |
382 | { | |
383 | return single_open(file, ci_registers_show, inode->i_private); | |
384 | } | |
385 | ||
386 | static const struct file_operations ci_registers_fops = { | |
387 | .open = ci_registers_open, | |
388 | .read = seq_read, | |
389 | .llseek = seq_lseek, | |
390 | .release = single_release, | |
391 | }; | |
392 | ||
e443b333 AS |
393 | /** |
394 | * dbg_create_files: initializes the attribute interface | |
2d651289 | 395 | * @ci: device |
e443b333 AS |
396 | * |
397 | * This function returns an error code | |
398 | */ | |
8e22978c | 399 | int dbg_create_files(struct ci_hdrc *ci) |
e443b333 | 400 | { |
2d651289 AS |
401 | struct dentry *dent; |
402 | ||
403 | ci->debugfs = debugfs_create_dir(dev_name(ci->dev), NULL); | |
404 | if (!ci->debugfs) | |
405 | return -ENOMEM; | |
406 | ||
407 | dent = debugfs_create_file("device", S_IRUGO, ci->debugfs, ci, | |
408 | &ci_device_fops); | |
409 | if (!dent) | |
410 | goto err; | |
411 | ||
412 | dent = debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs, | |
413 | ci, &ci_port_test_fops); | |
414 | if (!dent) | |
415 | goto err; | |
416 | ||
417 | dent = debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci, | |
418 | &ci_qheads_fops); | |
419 | if (!dent) | |
420 | goto err; | |
421 | ||
422 | dent = debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci, | |
423 | &ci_requests_fops); | |
c8e333a3 AS |
424 | if (!dent) |
425 | goto err; | |
426 | ||
88bdffc8 LJ |
427 | if (ci_otg_is_fsm_mode(ci)) { |
428 | dent = debugfs_create_file("otg", S_IRUGO, ci->debugfs, ci, | |
429 | &ci_otg_fops); | |
430 | if (!dent) | |
431 | goto err; | |
432 | } | |
433 | ||
c8e333a3 AS |
434 | dent = debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci, |
435 | &ci_role_fops); | |
c4a8b639 LJ |
436 | if (!dent) |
437 | goto err; | |
438 | ||
439 | dent = debugfs_create_file("registers", S_IRUGO, ci->debugfs, ci, | |
440 | &ci_registers_fops); | |
441 | ||
2d651289 AS |
442 | if (dent) |
443 | return 0; | |
444 | err: | |
445 | debugfs_remove_recursive(ci->debugfs); | |
446 | return -ENOMEM; | |
e443b333 AS |
447 | } |
448 | ||
449 | /** | |
450 | * dbg_remove_files: destroys the attribute interface | |
2d651289 | 451 | * @ci: device |
e443b333 | 452 | */ |
8e22978c | 453 | void dbg_remove_files(struct ci_hdrc *ci) |
e443b333 | 454 | { |
2d651289 | 455 | debugfs_remove_recursive(ci->debugfs); |
e443b333 | 456 | } |