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/drivers/usb/host/fhci-dbg.c

https://gitlab.com/stalker-android/linux-omap3
C | 139 lines | 100 code | 23 blank | 16 comment | 9 complexity | f9656d4ada4213a057e46915c0842133 MD5 | raw file
  1/*
  2 * Freescale QUICC Engine USB Host Controller Driver
  3 *
  4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
  5 *               Shlomi Gridish <gridish@freescale.com>
  6 *               Jerry Huang <Chang-Ming.Huang@freescale.com>
  7 * Copyright (c) Logic Product Development, Inc. 2007
  8 *               Peter Barada <peterb@logicpd.com>
  9 * Copyright (c) MontaVista Software, Inc. 2008.
 10 *               Anton Vorontsov <avorontsov@ru.mvista.com>
 11 *
 12 * This program is free software; you can redistribute  it and/or modify it
 13 * under  the terms of  the GNU General  Public License as published by the
 14 * Free Software Foundation;  either version 2 of the  License, or (at your
 15 * option) any later version.
 16 */
 17
 18#include <linux/kernel.h>
 19#include <linux/errno.h>
 20#include <linux/debugfs.h>
 21#include <linux/seq_file.h>
 22#include <linux/usb.h>
 23#include <linux/usb/hcd.h>
 24#include "fhci.h"
 25
 26void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er)
 27{
 28	int i;
 29
 30	if (usb_er == -1) {
 31		fhci->usb_irq_stat[12]++;
 32		return;
 33	}
 34
 35	for (i = 0; i < 12; ++i) {
 36		if (usb_er & (1 << i))
 37			fhci->usb_irq_stat[i]++;
 38	}
 39}
 40
 41static int fhci_dfs_regs_show(struct seq_file *s, void *v)
 42{
 43	struct fhci_hcd *fhci = s->private;
 44	struct fhci_regs __iomem *regs = fhci->regs;
 45
 46	seq_printf(s,
 47		"mode: 0x%x\n" "addr: 0x%x\n"
 48		"command: 0x%x\n" "ep0: 0x%x\n"
 49		"event: 0x%x\n" "mask: 0x%x\n"
 50		"status: 0x%x\n" "SOF timer: %d\n"
 51		"frame number: %d\n"
 52		"lines status: 0x%x\n",
 53		in_8(&regs->usb_mod), in_8(&regs->usb_addr),
 54		in_8(&regs->usb_comm), in_be16(&regs->usb_ep[0]),
 55		in_be16(&regs->usb_event), in_be16(&regs->usb_mask),
 56		in_8(&regs->usb_status), in_be16(&regs->usb_sof_tmr),
 57		in_be16(&regs->usb_frame_num),
 58		fhci_ioports_check_bus_state(fhci));
 59
 60	return 0;
 61}
 62
 63static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v)
 64{
 65	struct fhci_hcd *fhci = s->private;
 66	int *usb_irq_stat = fhci->usb_irq_stat;
 67
 68	seq_printf(s,
 69		"RXB: %d\n" "TXB: %d\n" "BSY: %d\n"
 70		"SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n"
 71		"TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n"
 72		"RESET: %d\n" "SFT: %d\n" "MSF: %d\n"
 73		"IDLE_ONLY: %d\n",
 74		usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2],
 75		usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5],
 76		usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8],
 77		usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11],
 78		usb_irq_stat[12]);
 79
 80	return 0;
 81}
 82
 83static int fhci_dfs_regs_open(struct inode *inode, struct file *file)
 84{
 85	return single_open(file, fhci_dfs_regs_show, inode->i_private);
 86}
 87
 88static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file)
 89{
 90	return single_open(file, fhci_dfs_irq_stat_show, inode->i_private);
 91}
 92
 93static const struct file_operations fhci_dfs_regs_fops = {
 94	.open = fhci_dfs_regs_open,
 95	.read = seq_read,
 96	.llseek = seq_lseek,
 97	.release = single_release,
 98};
 99
100static const struct file_operations fhci_dfs_irq_stat_fops = {
101	.open = fhci_dfs_irq_stat_open,
102	.read = seq_read,
103	.llseek = seq_lseek,
104	.release = single_release,
105};
106
107void fhci_dfs_create(struct fhci_hcd *fhci)
108{
109	struct device *dev = fhci_to_hcd(fhci)->self.controller;
110
111	fhci->dfs_root = debugfs_create_dir(dev_name(dev), usb_debug_root);
112	if (!fhci->dfs_root) {
113		WARN_ON(1);
114		return;
115	}
116
117	fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO,
118		fhci->dfs_root, fhci, &fhci_dfs_regs_fops);
119
120	fhci->dfs_irq_stat = debugfs_create_file("irq_stat",
121		S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
122		&fhci_dfs_irq_stat_fops);
123
124	WARN_ON(!fhci->dfs_regs || !fhci->dfs_irq_stat);
125}
126
127void fhci_dfs_destroy(struct fhci_hcd *fhci)
128{
129	if (!fhci->dfs_root)
130		return;
131
132	if (fhci->dfs_irq_stat)
133		debugfs_remove(fhci->dfs_irq_stat);
134
135	if (fhci->dfs_regs)
136		debugfs_remove(fhci->dfs_regs);
137
138	debugfs_remove(fhci->dfs_root);
139}