// SPDX-License-Identifier: GPL-2.0+
/*
 * 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>
 */

#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(&regs->usb_usmod), in_8(&regs->usb_usadr),
                in_8(&regs->usb_uscom), in_be16(&regs->usb_usep[0]),
                in_be16(&regs->usb_usber), in_be16(&regs->usb_usbmr),
                in_8(&regs->usb_usbs), in_be16(&regs->usb_ussft),
                in_be16(&regs->usb_usfrn),
                fhci_ioports_check_bus_state(fhci));

        return 0;
}
DEFINE_SHOW_ATTRIBUTE(fhci_dfs_regs);

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;
}
DEFINE_SHOW_ATTRIBUTE(fhci_dfs_irq_stat);

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);

        debugfs_create_file("regs", S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
                            &fhci_dfs_regs_fops);
        debugfs_create_file("irq_stat", S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
                            &fhci_dfs_irq_stat_fops);
}

void fhci_dfs_destroy(struct fhci_hcd *fhci)
{
        debugfs_remove_recursive(fhci->dfs_root);
}