mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 16:38:12 +00:00
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
/*
|
|
* Freescale QUICC Engine USB Host Controller Driver
|
|
*
|
|
* Copyright (c) Freescale Semicondutor, Inc. 2006.
|
|
* Shlomi Gridish <gridish@freescale.com>
|
|
* Jerry Huang <Chang-Ming.Huang@freescale.com>
|
|
* Copyright (c) Logic Product Development, Inc. 2007
|
|
* Peter Barada <peterb@logicpd.com>
|
|
* Copyright (c) MontaVista Software, Inc. 2008.
|
|
* Anton Vorontsov <avorontsov@ru.mvista.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/hcd.h>
|
|
#include "fhci.h"
|
|
|
|
void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er)
|
|
{
|
|
int i;
|
|
|
|
if (usb_er == -1) {
|
|
fhci->usb_irq_stat[12]++;
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < 12; ++i) {
|
|
if (usb_er & (1 << i))
|
|
fhci->usb_irq_stat[i]++;
|
|
}
|
|
}
|
|
|
|
static int fhci_dfs_regs_show(struct seq_file *s, void *v)
|
|
{
|
|
struct fhci_hcd *fhci = s->private;
|
|
struct qe_usb_ctlr __iomem *regs = fhci->regs;
|
|
|
|
seq_printf(s,
|
|
"mode: 0x%x\n" "addr: 0x%x\n"
|
|
"command: 0x%x\n" "ep0: 0x%x\n"
|
|
"event: 0x%x\n" "mask: 0x%x\n"
|
|
"status: 0x%x\n" "SOF timer: %d\n"
|
|
"frame number: %d\n"
|
|
"lines status: 0x%x\n",
|
|
in_8(®s->usb_usmod), in_8(®s->usb_usadr),
|
|
in_8(®s->usb_uscom), in_be16(®s->usb_usep[0]),
|
|
in_be16(®s->usb_usber), in_be16(®s->usb_usbmr),
|
|
in_8(®s->usb_usbs), in_be16(®s->usb_ussft),
|
|
in_be16(®s->usb_usfrn),
|
|
fhci_ioports_check_bus_state(fhci));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v)
|
|
{
|
|
struct fhci_hcd *fhci = s->private;
|
|
int *usb_irq_stat = fhci->usb_irq_stat;
|
|
|
|
seq_printf(s,
|
|
"RXB: %d\n" "TXB: %d\n" "BSY: %d\n"
|
|
"SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n"
|
|
"TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n"
|
|
"RESET: %d\n" "SFT: %d\n" "MSF: %d\n"
|
|
"IDLE_ONLY: %d\n",
|
|
usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2],
|
|
usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5],
|
|
usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8],
|
|
usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11],
|
|
usb_irq_stat[12]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fhci_dfs_regs_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, fhci_dfs_regs_show, inode->i_private);
|
|
}
|
|
|
|
static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, fhci_dfs_irq_stat_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations fhci_dfs_regs_fops = {
|
|
.open = fhci_dfs_regs_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static const struct file_operations fhci_dfs_irq_stat_fops = {
|
|
.open = fhci_dfs_irq_stat_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
void fhci_dfs_create(struct fhci_hcd *fhci)
|
|
{
|
|
struct device *dev = fhci_to_hcd(fhci)->self.controller;
|
|
|
|
fhci->dfs_root = debugfs_create_dir(dev_name(dev), usb_debug_root);
|
|
if (!fhci->dfs_root) {
|
|
WARN_ON(1);
|
|
return;
|
|
}
|
|
|
|
fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO,
|
|
fhci->dfs_root, fhci, &fhci_dfs_regs_fops);
|
|
|
|
fhci->dfs_irq_stat = debugfs_create_file("irq_stat",
|
|
S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
|
|
&fhci_dfs_irq_stat_fops);
|
|
|
|
WARN_ON(!fhci->dfs_regs || !fhci->dfs_irq_stat);
|
|
}
|
|
|
|
void fhci_dfs_destroy(struct fhci_hcd *fhci)
|
|
{
|
|
if (!fhci->dfs_root)
|
|
return;
|
|
|
|
debugfs_remove(fhci->dfs_irq_stat);
|
|
debugfs_remove(fhci->dfs_regs);
|
|
debugfs_remove(fhci->dfs_root);
|
|
}
|