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path: root/drivers/usb/dwc3/debugfs.c
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Diffstat (limited to 'drivers/usb/dwc3/debugfs.c')
-rw-r--r--drivers/usb/dwc3/debugfs.c214
1 files changed, 208 insertions, 6 deletions
diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c
index 433c97c15fc5..d4a30f118724 100644
--- a/drivers/usb/dwc3/debugfs.c
+++ b/drivers/usb/dwc3/debugfs.c
@@ -46,6 +46,8 @@
46#include <linux/delay.h> 46#include <linux/delay.h>
47#include <linux/uaccess.h> 47#include <linux/uaccess.h>
48 48
49#include <linux/usb/ch9.h>
50
49#include "core.h" 51#include "core.h"
50#include "gadget.h" 52#include "gadget.h"
51#include "io.h" 53#include "io.h"
@@ -464,6 +466,192 @@ static const struct file_operations dwc3_mode_fops = {
464 .release = single_release, 466 .release = single_release,
465}; 467};
466 468
469static int dwc3_testmode_show(struct seq_file *s, void *unused)
470{
471 struct dwc3 *dwc = s->private;
472 unsigned long flags;
473 u32 reg;
474
475 spin_lock_irqsave(&dwc->lock, flags);
476 reg = dwc3_readl(dwc->regs, DWC3_DCTL);
477 reg &= DWC3_DCTL_TSTCTRL_MASK;
478 reg >>= 1;
479 spin_unlock_irqrestore(&dwc->lock, flags);
480
481 switch (reg) {
482 case 0:
483 seq_printf(s, "no test\n");
484 break;
485 case TEST_J:
486 seq_printf(s, "test_j\n");
487 break;
488 case TEST_K:
489 seq_printf(s, "test_k\n");
490 break;
491 case TEST_SE0_NAK:
492 seq_printf(s, "test_se0_nak\n");
493 break;
494 case TEST_PACKET:
495 seq_printf(s, "test_packet\n");
496 break;
497 case TEST_FORCE_EN:
498 seq_printf(s, "test_force_enable\n");
499 break;
500 default:
501 seq_printf(s, "UNKNOWN %d\n", reg);
502 }
503
504 return 0;
505}
506
507static int dwc3_testmode_open(struct inode *inode, struct file *file)
508{
509 return single_open(file, dwc3_testmode_show, inode->i_private);
510}
511
512static ssize_t dwc3_testmode_write(struct file *file,
513 const char __user *ubuf, size_t count, loff_t *ppos)
514{
515 struct seq_file *s = file->private_data;
516 struct dwc3 *dwc = s->private;
517 unsigned long flags;
518 u32 testmode = 0;
519 char buf[32];
520
521 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
522 return -EFAULT;
523
524 if (!strncmp(buf, "test_j", 6))
525 testmode = TEST_J;
526 else if (!strncmp(buf, "test_k", 6))
527 testmode = TEST_K;
528 else if (!strncmp(buf, "test_se0_nak", 12))
529 testmode = TEST_SE0_NAK;
530 else if (!strncmp(buf, "test_packet", 11))
531 testmode = TEST_PACKET;
532 else if (!strncmp(buf, "test_force_enable", 17))
533 testmode = TEST_FORCE_EN;
534 else
535 testmode = 0;
536
537 spin_lock_irqsave(&dwc->lock, flags);
538 dwc3_gadget_set_test_mode(dwc, testmode);
539 spin_unlock_irqrestore(&dwc->lock, flags);
540
541 return count;
542}
543
544static const struct file_operations dwc3_testmode_fops = {
545 .open = dwc3_testmode_open,
546 .write = dwc3_testmode_write,
547 .read = seq_read,
548 .llseek = seq_lseek,
549 .release = single_release,
550};
551
552static int dwc3_link_state_show(struct seq_file *s, void *unused)
553{
554 struct dwc3 *dwc = s->private;
555 unsigned long flags;
556 enum dwc3_link_state state;
557 u32 reg;
558
559 spin_lock_irqsave(&dwc->lock, flags);
560 reg = dwc3_readl(dwc->regs, DWC3_DSTS);
561 state = DWC3_DSTS_USBLNKST(reg);
562 spin_unlock_irqrestore(&dwc->lock, flags);
563
564 switch (state) {
565 case DWC3_LINK_STATE_U0:
566 seq_printf(s, "U0\n");
567 break;
568 case DWC3_LINK_STATE_U1:
569 seq_printf(s, "U1\n");
570 break;
571 case DWC3_LINK_STATE_U2:
572 seq_printf(s, "U2\n");
573 break;
574 case DWC3_LINK_STATE_U3:
575 seq_printf(s, "U3\n");
576 break;
577 case DWC3_LINK_STATE_SS_DIS:
578 seq_printf(s, "SS.Disabled\n");
579 break;
580 case DWC3_LINK_STATE_RX_DET:
581 seq_printf(s, "Rx.Detect\n");
582 break;
583 case DWC3_LINK_STATE_SS_INACT:
584 seq_printf(s, "SS.Inactive\n");
585 break;
586 case DWC3_LINK_STATE_POLL:
587 seq_printf(s, "Poll\n");
588 break;
589 case DWC3_LINK_STATE_RECOV:
590 seq_printf(s, "Recovery\n");
591 break;
592 case DWC3_LINK_STATE_HRESET:
593 seq_printf(s, "HRESET\n");
594 break;
595 case DWC3_LINK_STATE_CMPLY:
596 seq_printf(s, "Compliance\n");
597 break;
598 case DWC3_LINK_STATE_LPBK:
599 seq_printf(s, "Loopback\n");
600 break;
601 default:
602 seq_printf(s, "UNKNOWN %d\n", reg);
603 }
604
605 return 0;
606}
607
608static int dwc3_link_state_open(struct inode *inode, struct file *file)
609{
610 return single_open(file, dwc3_link_state_show, inode->i_private);
611}
612
613static ssize_t dwc3_link_state_write(struct file *file,
614 const char __user *ubuf, size_t count, loff_t *ppos)
615{
616 struct seq_file *s = file->private_data;
617 struct dwc3 *dwc = s->private;
618 unsigned long flags;
619 enum dwc3_link_state state = 0;
620 char buf[32];
621
622 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
623 return -EFAULT;
624
625 if (!strncmp(buf, "SS.Disabled", 11))
626 state = DWC3_LINK_STATE_SS_DIS;
627 else if (!strncmp(buf, "Rx.Detect", 9))
628 state = DWC3_LINK_STATE_RX_DET;
629 else if (!strncmp(buf, "SS.Inactive", 11))
630 state = DWC3_LINK_STATE_SS_INACT;
631 else if (!strncmp(buf, "Recovery", 8))
632 state = DWC3_LINK_STATE_RECOV;
633 else if (!strncmp(buf, "Compliance", 10))
634 state = DWC3_LINK_STATE_CMPLY;
635 else if (!strncmp(buf, "Loopback", 8))
636 state = DWC3_LINK_STATE_LPBK;
637 else
638 return -EINVAL;
639
640 spin_lock_irqsave(&dwc->lock, flags);
641 dwc3_gadget_set_link_state(dwc, state);
642 spin_unlock_irqrestore(&dwc->lock, flags);
643
644 return count;
645}
646
647static const struct file_operations dwc3_link_state_fops = {
648 .open = dwc3_link_state_open,
649 .write = dwc3_link_state_write,
650 .read = seq_read,
651 .llseek = seq_lseek,
652 .release = single_release,
653};
654
467int __devinit dwc3_debugfs_init(struct dwc3 *dwc) 655int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
468{ 656{
469 struct dentry *root; 657 struct dentry *root;
@@ -471,8 +659,8 @@ int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
471 int ret; 659 int ret;
472 660
473 root = debugfs_create_dir(dev_name(dwc->dev), NULL); 661 root = debugfs_create_dir(dev_name(dwc->dev), NULL);
474 if (IS_ERR(root)) { 662 if (!root) {
475 ret = PTR_ERR(root); 663 ret = -ENOMEM;
476 goto err0; 664 goto err0;
477 } 665 }
478 666
@@ -480,15 +668,29 @@ int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
480 668
481 file = debugfs_create_file("regdump", S_IRUGO, root, dwc, 669 file = debugfs_create_file("regdump", S_IRUGO, root, dwc,
482 &dwc3_regdump_fops); 670 &dwc3_regdump_fops);
483 if (IS_ERR(file)) { 671 if (!file) {
484 ret = PTR_ERR(file); 672 ret = -ENOMEM;
485 goto err1; 673 goto err1;
486 } 674 }
487 675
488 file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, 676 file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
489 dwc, &dwc3_mode_fops); 677 dwc, &dwc3_mode_fops);
490 if (IS_ERR(file)) { 678 if (!file) {
491 ret = PTR_ERR(file); 679 ret = -ENOMEM;
680 goto err1;
681 }
682
683 file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
684 dwc, &dwc3_testmode_fops);
685 if (!file) {
686 ret = -ENOMEM;
687 goto err1;
688 }
689
690 file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root,
691 dwc, &dwc3_link_state_fops);
692 if (!file) {
693 ret = -ENOMEM;
492 goto err1; 694 goto err1;
493 } 695 }
494 696
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-15 02:09:31 -0500