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Commit | Line | Data |
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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 | |
3c724888 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 | 177 | unsigned long flags; |
8e22978c | 178 | struct ci_hw_req *req = NULL; |
cc9e6c49 | 179 | struct td_node *node, *tmpnode; |
8e22978c | 180 | unsigned i, j, qsize = sizeof(struct ci_hw_td)/sizeof(u32); |
e443b333 | 181 | |
2d651289 AS |
182 | if (ci->role != CI_ROLE_GADGET) { |
183 | seq_printf(s, "not in gadget mode\n"); | |
e443b333 AS |
184 | return 0; |
185 | } | |
186 | ||
26c696c6 RZ |
187 | spin_lock_irqsave(&ci->lock, flags); |
188 | for (i = 0; i < ci->hw_ep_max; i++) | |
32540ba2 | 189 | list_for_each_entry(req, &ci->ci_hw_ep[i].qh.queue, queue) { |
cc9e6c49 MG |
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 | } | |
e443b333 | 201 | } |
26c696c6 | 202 | spin_unlock_irqrestore(&ci->lock, flags); |
e443b333 | 203 | |
2d651289 AS |
204 | return 0; |
205 | } | |
206 | ||
207 | static int ci_requests_open(struct inode *inode, struct file *file) | |
208 | { | |
209 | return single_open(file, ci_requests_show, inode->i_private); | |
e443b333 | 210 | } |
2d651289 AS |
211 | |
212 | static 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 | }; | |
e443b333 | 218 | |
df40f8d3 | 219 | static int ci_otg_show(struct seq_file *s, void *unused) |
88bdffc8 LJ |
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 | /* ------ State ----- */ | |
230 | seq_printf(s, "OTG state: %s\n\n", | |
ef44cb42 | 231 | usb_otg_state_string(ci->otg.state)); |
88bdffc8 LJ |
232 | |
233 | /* ------ State Machine Variables ----- */ | |
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 | ||
281 | static int ci_otg_open(struct inode *inode, struct file *file) | |
282 | { | |
283 | return single_open(file, ci_otg_show, inode->i_private); | |
284 | } | |
285 | ||
286 | static 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 | ||
c8e333a3 AS |
293 | static int ci_role_show(struct seq_file *s, void *data) |
294 | { | |
8e22978c | 295 | struct ci_hdrc *ci = s->private; |
c8e333a3 AS |
296 | |
297 | seq_printf(s, "%s\n", ci_role(ci)->name); | |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
302 | static 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; | |
8e22978c | 306 | struct ci_hdrc *ci = s->private; |
c8e333a3 AS |
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 | ||
bc249379 | 323 | pm_runtime_get_sync(ci->dev); |
251b3c8b | 324 | disable_irq(ci->irq); |
c8e333a3 AS |
325 | ci_role_stop(ci); |
326 | ret = ci_role_start(ci, role); | |
251b3c8b | 327 | enable_irq(ci->irq); |
bc249379 | 328 | pm_runtime_put_sync(ci->dev); |
c8e333a3 AS |
329 | |
330 | return ret ? ret : count; | |
331 | } | |
332 | ||
333 | static int ci_role_open(struct inode *inode, struct file *file) | |
334 | { | |
335 | return single_open(file, ci_role_show, inode->i_private); | |
336 | } | |
337 | ||
338 | static 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 | ||
df40f8d3 | 346 | static int ci_registers_show(struct seq_file *s, void *unused) |
c4a8b639 LJ |
347 | { |
348 | struct ci_hdrc *ci = s->private; | |
349 | u32 tmp_reg; | |
350 | ||
0c4d6af4 LJ |
351 | if (!ci || ci->in_lpm) |
352 | return -EPERM; | |
c4a8b639 LJ |
353 | |
354 | /* ------ Registers ----- */ | |
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 | ||
378 | static int ci_registers_open(struct inode *inode, struct file *file) | |
379 | { | |
380 | return single_open(file, ci_registers_show, inode->i_private); | |
381 | } | |
382 | ||
383 | static 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 | ||
e443b333 AS |
390 | /** |
391 | * dbg_create_files: initializes the attribute interface | |
2d651289 | 392 | * @ci: device |
e443b333 AS |
393 | * |
394 | * This function returns an error code | |
395 | */ | |
8e22978c | 396 | int dbg_create_files(struct ci_hdrc *ci) |
e443b333 | 397 | { |
2d651289 AS |
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); | |
c8e333a3 AS |
421 | if (!dent) |
422 | goto err; | |
423 | ||
88bdffc8 LJ |
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 | ||
c8e333a3 AS |
431 | dent = debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci, |
432 | &ci_role_fops); | |
c4a8b639 LJ |
433 | if (!dent) |
434 | goto err; | |
435 | ||
436 | dent = debugfs_create_file("registers", S_IRUGO, ci->debugfs, ci, | |
437 | &ci_registers_fops); | |
438 | ||
2d651289 AS |
439 | if (dent) |
440 | return 0; | |
441 | err: | |
442 | debugfs_remove_recursive(ci->debugfs); | |
443 | return -ENOMEM; | |
e443b333 AS |
444 | } |
445 | ||
446 | /** | |
447 | * dbg_remove_files: destroys the attribute interface | |
2d651289 | 448 | * @ci: device |
e443b333 | 449 | */ |
8e22978c | 450 | void dbg_remove_files(struct ci_hdrc *ci) |
e443b333 | 451 | { |
2d651289 | 452 | debugfs_remove_recursive(ci->debugfs); |
e443b333 | 453 | } |