64024d9f2a
This fixes checkpatch warning: "WARNING: debugfs_remove(NULL) is safe this check is probably not required" Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
/*
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* Freescale QUICC Engine USB Host Controller Driver
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*
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* Copyright (c) Freescale Semicondutor, Inc. 2006.
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* Shlomi Gridish <gridish@freescale.com>
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* Jerry Huang <Chang-Ming.Huang@freescale.com>
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* Copyright (c) Logic Product Development, Inc. 2007
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* Peter Barada <peterb@logicpd.com>
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* Copyright (c) MontaVista Software, Inc. 2008.
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* Anton Vorontsov <avorontsov@ru.mvista.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/usb.h>
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#include <linux/usb/hcd.h>
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#include "fhci.h"
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void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er)
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{
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int i;
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if (usb_er == -1) {
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fhci->usb_irq_stat[12]++;
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return;
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}
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for (i = 0; i < 12; ++i) {
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if (usb_er & (1 << i))
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fhci->usb_irq_stat[i]++;
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}
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}
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static int fhci_dfs_regs_show(struct seq_file *s, void *v)
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{
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struct fhci_hcd *fhci = s->private;
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struct qe_usb_ctlr __iomem *regs = fhci->regs;
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seq_printf(s,
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"mode: 0x%x\n" "addr: 0x%x\n"
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"command: 0x%x\n" "ep0: 0x%x\n"
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"event: 0x%x\n" "mask: 0x%x\n"
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"status: 0x%x\n" "SOF timer: %d\n"
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"frame number: %d\n"
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"lines status: 0x%x\n",
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in_8(®s->usb_usmod), in_8(®s->usb_usadr),
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in_8(®s->usb_uscom), in_be16(®s->usb_usep[0]),
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in_be16(®s->usb_usber), in_be16(®s->usb_usbmr),
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in_8(®s->usb_usbs), in_be16(®s->usb_ussft),
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in_be16(®s->usb_usfrn),
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fhci_ioports_check_bus_state(fhci));
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return 0;
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}
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static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v)
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{
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struct fhci_hcd *fhci = s->private;
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int *usb_irq_stat = fhci->usb_irq_stat;
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seq_printf(s,
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"RXB: %d\n" "TXB: %d\n" "BSY: %d\n"
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"SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n"
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"TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n"
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"RESET: %d\n" "SFT: %d\n" "MSF: %d\n"
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"IDLE_ONLY: %d\n",
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usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2],
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usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5],
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usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8],
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usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11],
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usb_irq_stat[12]);
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return 0;
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}
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static int fhci_dfs_regs_open(struct inode *inode, struct file *file)
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{
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return single_open(file, fhci_dfs_regs_show, inode->i_private);
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}
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static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file)
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{
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return single_open(file, fhci_dfs_irq_stat_show, inode->i_private);
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}
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static const struct file_operations fhci_dfs_regs_fops = {
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.open = fhci_dfs_regs_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static const struct file_operations fhci_dfs_irq_stat_fops = {
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.open = fhci_dfs_irq_stat_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void fhci_dfs_create(struct fhci_hcd *fhci)
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{
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struct device *dev = fhci_to_hcd(fhci)->self.controller;
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fhci->dfs_root = debugfs_create_dir(dev_name(dev), usb_debug_root);
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if (!fhci->dfs_root) {
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WARN_ON(1);
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return;
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}
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fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO,
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fhci->dfs_root, fhci, &fhci_dfs_regs_fops);
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fhci->dfs_irq_stat = debugfs_create_file("irq_stat",
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S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
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&fhci_dfs_irq_stat_fops);
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WARN_ON(!fhci->dfs_regs || !fhci->dfs_irq_stat);
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}
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void fhci_dfs_destroy(struct fhci_hcd *fhci)
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{
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if (!fhci->dfs_root)
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return;
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debugfs_remove(fhci->dfs_irq_stat);
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debugfs_remove(fhci->dfs_regs);
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debugfs_remove(fhci->dfs_root);
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}
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