2ee127242a
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. There is also no need to keep the file dentries around at all, so remove those variables from the host controller structure. Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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#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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DEFINE_SHOW_ATTRIBUTE(fhci_dfs_regs);
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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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DEFINE_SHOW_ATTRIBUTE(fhci_dfs_irq_stat);
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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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debugfs_create_file("regs", S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
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&fhci_dfs_regs_fops);
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debugfs_create_file("irq_stat", S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
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&fhci_dfs_irq_stat_fops);
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}
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void fhci_dfs_destroy(struct fhci_hcd *fhci)
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{
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debugfs_remove_recursive(fhci->dfs_root);
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}
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