// 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/module.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio/consumer.h>
#include <soc/fsl/qe/qe.h>
#include <asm/fsl_gtm.h>
#include "fhci.h"

void fhci_start_sof_timer(struct fhci_hcd *fhci)
{
        fhci_dbg(fhci, "-> %s\n", __func__);

        /* clear frame_n */
        out_be16(&fhci->pram->frame_num, 0);

        out_be16(&fhci->regs->usb_ussft, 0);
        setbits8(&fhci->regs->usb_usmod, USB_MODE_SFTE);

        fhci_dbg(fhci, "<- %s\n", __func__);
}

void fhci_stop_sof_timer(struct fhci_hcd *fhci)
{
        fhci_dbg(fhci, "-> %s\n", __func__);

        clrbits8(&fhci->regs->usb_usmod, USB_MODE_SFTE);
        gtm_stop_timer16(fhci->timer);

        fhci_dbg(fhci, "<- %s\n", __func__);
}

u16 fhci_get_sof_timer_count(struct fhci_usb *usb)
{
        return be16_to_cpu(in_be16(&usb->fhci->regs->usb_ussft) / 12);
}

/* initialize the endpoint zero */
static u32 endpoint_zero_init(struct fhci_usb *usb,
                              enum fhci_mem_alloc data_mem,
                              u32 ring_len)
{
        u32 rc;

        rc = fhci_create_ep(usb, data_mem, ring_len);
        if (rc)
                return rc;

        /* inilialize endpoint registers */
        fhci_init_ep_registers(usb, usb->ep0, data_mem);

        return 0;
}

/* enable the USB interrupts */
void fhci_usb_enable_interrupt(struct fhci_usb *usb)
{
        struct fhci_hcd *fhci = usb->fhci;

        if (usb->intr_nesting_cnt == 1) {
                /* initialize the USB interrupt */
                enable_irq(fhci_to_hcd(fhci)->irq);

                /* initialize the event register and mask register */
                out_be16(&usb->fhci->regs->usb_usber, 0xffff);
                out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);

                /* enable the timer interrupts */
                enable_irq(fhci->timer->irq);
        } else if (usb->intr_nesting_cnt > 1)
                fhci_info(fhci, "unbalanced USB interrupts nesting\n");
        usb->intr_nesting_cnt--;
}

/* disable the usb interrupt */
void fhci_usb_disable_interrupt(struct fhci_usb *usb)
{
        struct fhci_hcd *fhci = usb->fhci;

        if (usb->intr_nesting_cnt == 0) {
                /* disable the timer interrupt */
                disable_irq_nosync(fhci->timer->irq);

                /* disable the usb interrupt */
                disable_irq_nosync(fhci_to_hcd(fhci)->irq);
                out_be16(&usb->fhci->regs->usb_usbmr, 0);
        }
        usb->intr_nesting_cnt++;
}

/* enable the USB controller */
static u32 fhci_usb_enable(struct fhci_hcd *fhci)
{
        struct fhci_usb *usb = fhci->usb_lld;

        out_be16(&usb->fhci->regs->usb_usber, 0xffff);
        out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
        setbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN);

        mdelay(100);

        return 0;
}

/* disable the USB controller */
static u32 fhci_usb_disable(struct fhci_hcd *fhci)
{
        struct fhci_usb *usb = fhci->usb_lld;

        fhci_usb_disable_interrupt(usb);
        fhci_port_disable(fhci);

        /* disable the usb controller */
        if (usb->port_status == FHCI_PORT_FULL ||
                        usb->port_status == FHCI_PORT_LOW)
                fhci_device_disconnected_interrupt(fhci);

        clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN);

        return 0;
}

/* check the bus state by polling the QE bit on the IO ports */
int fhci_ioports_check_bus_state(struct fhci_hcd *fhci)
{
        u8 bits = 0;

        /* check USBOE,if transmitting,exit */
        if (!gpiod_get_value(fhci->gpiods[GPIO_USBOE]))
                return -1;

        /* check USBRP */
        if (gpiod_get_value(fhci->gpiods[GPIO_USBRP]))
                bits |= 0x2;

        /* check USBRN */
        if (gpiod_get_value(fhci->gpiods[GPIO_USBRN]))
                bits |= 0x1;

        return bits;
}

static void fhci_mem_free(struct fhci_hcd *fhci)
{
        struct ed *ed;
        struct ed *next_ed;
        struct td *td;
        struct td *next_td;

        list_for_each_entry_safe(ed, next_ed, &fhci->empty_eds, node) {
                list_del(&ed->node);
                kfree(ed);
        }

        list_for_each_entry_safe(td, next_td, &fhci->empty_tds, node) {
                list_del(&td->node);
                kfree(td);
        }

        kfree(fhci->vroot_hub);
        fhci->vroot_hub = NULL;

        kfree(fhci->hc_list);
        fhci->hc_list = NULL;
}

static int fhci_mem_init(struct fhci_hcd *fhci)
{
        int i;

        fhci->hc_list = kzalloc_obj(*fhci->hc_list);
        if (!fhci->hc_list)
                goto err;

        INIT_LIST_HEAD(&fhci->hc_list->ctrl_list);
        INIT_LIST_HEAD(&fhci->hc_list->bulk_list);
        INIT_LIST_HEAD(&fhci->hc_list->iso_list);
        INIT_LIST_HEAD(&fhci->hc_list->intr_list);
        INIT_LIST_HEAD(&fhci->hc_list->done_list);

        fhci->vroot_hub = kzalloc_obj(*fhci->vroot_hub);
        if (!fhci->vroot_hub)
                goto err;

        INIT_LIST_HEAD(&fhci->empty_eds);
        INIT_LIST_HEAD(&fhci->empty_tds);

        /* initialize work queue to handle done list */
        fhci_tasklet.data = (unsigned long)fhci;
        fhci->process_done_task = &fhci_tasklet;

        for (i = 0; i < MAX_TDS; i++) {
                struct td *td;

                td = kmalloc_obj(*td);
                if (!td)
                        goto err;
                fhci_recycle_empty_td(fhci, td);
        }
        for (i = 0; i < MAX_EDS; i++) {
                struct ed *ed;

                ed = kmalloc_obj(*ed);
                if (!ed)
                        goto err;
                fhci_recycle_empty_ed(fhci, ed);
        }

        fhci->active_urbs = 0;
        return 0;
err:
        fhci_mem_free(fhci);
        return -ENOMEM;
}

/* destroy the fhci_usb structure */
static void fhci_usb_free(void *lld)
{
        struct fhci_usb *usb = lld;
        struct fhci_hcd *fhci;

        if (usb) {
                fhci = usb->fhci;
                fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
                fhci_ep0_free(usb);
                kfree(usb->actual_frame);
                kfree(usb);
        }
}

/* initialize the USB */
static int fhci_usb_init(struct fhci_hcd *fhci)
{
        struct fhci_usb *usb = fhci->usb_lld;

        memset_io(usb->fhci->pram, 0, FHCI_PRAM_SIZE);

        usb->port_status = FHCI_PORT_DISABLED;
        usb->max_frame_usage = FRAME_TIME_USAGE;
        usb->sw_transaction_time = SW_FIX_TIME_BETWEEN_TRANSACTION;

        usb->actual_frame = kzalloc_obj(*usb->actual_frame);
        if (!usb->actual_frame) {
                fhci_usb_free(usb);
                return -ENOMEM;
        }

        INIT_LIST_HEAD(&usb->actual_frame->tds_list);

        /* initializing registers on chip, clear frame number */
        out_be16(&fhci->pram->frame_num, 0);

        /* clear rx state */
        out_be32(&fhci->pram->rx_state, 0);

        /* set mask register */
        usb->saved_msk = (USB_E_TXB_MASK |
                          USB_E_TXE1_MASK |
                          USB_E_IDLE_MASK |
                          USB_E_RESET_MASK | USB_E_SFT_MASK | USB_E_MSF_MASK);

        out_8(&usb->fhci->regs->usb_usmod, USB_MODE_HOST | USB_MODE_EN);

        /* clearing the mask register */
        out_be16(&usb->fhci->regs->usb_usbmr, 0);

        /* initialing the event register */
        out_be16(&usb->fhci->regs->usb_usber, 0xffff);

        if (endpoint_zero_init(usb, DEFAULT_DATA_MEM, DEFAULT_RING_LEN) != 0) {
                fhci_usb_free(usb);
                return -EINVAL;
        }

        return 0;
}

/* initialize the fhci_usb struct and the corresponding data staruct */
static struct fhci_usb *fhci_create_lld(struct fhci_hcd *fhci)
{
        struct fhci_usb *usb;

        /* allocate memory for SCC data structure */
        usb = kzalloc_obj(*usb);
        if (!usb)
                return NULL;

        usb->fhci = fhci;
        usb->hc_list = fhci->hc_list;
        usb->vroot_hub = fhci->vroot_hub;

        usb->transfer_confirm = fhci_transfer_confirm_callback;

        return usb;
}

static int fhci_start(struct usb_hcd *hcd)
{
        int ret;
        struct fhci_hcd *fhci = hcd_to_fhci(hcd);

        ret = fhci_mem_init(fhci);
        if (ret) {
                fhci_err(fhci, "failed to allocate memory\n");
                goto err;
        }

        fhci->usb_lld = fhci_create_lld(fhci);
        if (!fhci->usb_lld) {
                fhci_err(fhci, "low level driver config failed\n");
                ret = -ENOMEM;
                goto err;
        }

        ret = fhci_usb_init(fhci);
        if (ret) {
                fhci_err(fhci, "low level driver initialize failed\n");
                goto err;
        }

        spin_lock_init(&fhci->lock);

        /* connect the virtual root hub */
        fhci->vroot_hub->dev_num = 1;   /* this field may be needed to fix */
        fhci->vroot_hub->hub.wHubStatus = 0;
        fhci->vroot_hub->hub.wHubChange = 0;
        fhci->vroot_hub->port.wPortStatus = 0;
        fhci->vroot_hub->port.wPortChange = 0;

        hcd->state = HC_STATE_RUNNING;

        /*
         * From here on, hub_wq concurrently accesses the root
         * hub; drivers will be talking to enumerated devices.
         * (On restart paths, hub_wq already knows about the root
         * hub and could find work as soon as we wrote FLAG_CF.)
         *
         * Before this point the HC was idle/ready.  After, hub_wq
         * and device drivers may start it running.
         */
        fhci_usb_enable(fhci);
        return 0;
err:
        fhci_mem_free(fhci);
        return ret;
}

static void fhci_stop(struct usb_hcd *hcd)
{
        struct fhci_hcd *fhci = hcd_to_fhci(hcd);

        fhci_usb_disable_interrupt(fhci->usb_lld);
        fhci_usb_disable(fhci);

        fhci_usb_free(fhci->usb_lld);
        fhci->usb_lld = NULL;
        fhci_mem_free(fhci);
}

static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
                            gfp_t mem_flags)
{
        struct fhci_hcd *fhci = hcd_to_fhci(hcd);
        u32 pipe = urb->pipe;
        int ret;
        int i;
        int size = 0;
        struct urb_priv *urb_priv;
        unsigned long flags;

        switch (usb_pipetype(pipe)) {
        case PIPE_CONTROL:
                /* 1 td fro setup,1 for ack */
                size = 2;
                fallthrough;
        case PIPE_BULK:
                /* one td for every 4096 bytes(can be up to 8k) */
                size += urb->transfer_buffer_length / 4096;
                /* ...add for any remaining bytes... */
                if ((urb->transfer_buffer_length % 4096) != 0)
                        size++;
                /* ..and maybe a zero length packet to wrap it up */
                if (size == 0)
                        size++;
                else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
                         && (urb->transfer_buffer_length
                             % usb_maxpacket(urb->dev, pipe)) != 0)
                        size++;
                break;
        case PIPE_ISOCHRONOUS:
                size = urb->number_of_packets;
                if (size <= 0)
                        return -EINVAL;
                for (i = 0; i < urb->number_of_packets; i++) {
                        urb->iso_frame_desc[i].actual_length = 0;
                        urb->iso_frame_desc[i].status = (u32) (-EXDEV);
                }
                break;
        case PIPE_INTERRUPT:
                size = 1;
        }

        /* allocate the private part of the URB */
        urb_priv = kzalloc_obj(*urb_priv, mem_flags);
        if (!urb_priv)
                return -ENOMEM;

        /* allocate the private part of the URB */
        urb_priv->tds = kzalloc_objs(*urb_priv->tds, size, mem_flags);
        if (!urb_priv->tds) {
                kfree(urb_priv);
                return -ENOMEM;
        }

        spin_lock_irqsave(&fhci->lock, flags);

        ret = usb_hcd_link_urb_to_ep(hcd, urb);
        if (ret)
                goto err;

        /* fill the private part of the URB */
        urb_priv->num_of_tds = size;

        urb->status = -EINPROGRESS;
        urb->actual_length = 0;
        urb->error_count = 0;
        urb->hcpriv = urb_priv;

        fhci_queue_urb(fhci, urb);
err:
        if (ret) {
                kfree(urb_priv->tds);
                kfree(urb_priv);
        }
        spin_unlock_irqrestore(&fhci->lock, flags);
        return ret;
}

/* dequeue FHCI URB */
static int fhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
{
        struct fhci_hcd *fhci = hcd_to_fhci(hcd);
        struct fhci_usb *usb = fhci->usb_lld;
        int ret = -EINVAL;
        unsigned long flags;

        if (!urb || !urb->dev || !urb->dev->bus)
                goto out;

        spin_lock_irqsave(&fhci->lock, flags);

        ret = usb_hcd_check_unlink_urb(hcd, urb, status);
        if (ret)
                goto out2;

        if (usb->port_status != FHCI_PORT_DISABLED) {
                struct urb_priv *urb_priv;

                /*
                 * flag the urb's data for deletion in some upcoming
                 * SF interrupt's delete list processing
                 */
                urb_priv = urb->hcpriv;

                if (!urb_priv || (urb_priv->state == URB_DEL))
                        goto out2;

                urb_priv->state = URB_DEL;

                /* already pending? */
                urb_priv->ed->state = FHCI_ED_URB_DEL;
        } else {
                fhci_urb_complete_free(fhci, urb);
        }

out2:
        spin_unlock_irqrestore(&fhci->lock, flags);
out:
        return ret;
}

static void fhci_endpoint_disable(struct usb_hcd *hcd,
                                  struct usb_host_endpoint *ep)
{
        struct fhci_hcd *fhci;
        struct ed *ed;
        unsigned long flags;

        fhci = hcd_to_fhci(hcd);
        spin_lock_irqsave(&fhci->lock, flags);
        ed = ep->hcpriv;
        if (ed) {
                while (ed->td_head != NULL) {
                        struct td *td = fhci_remove_td_from_ed(ed);
                        fhci_urb_complete_free(fhci, td->urb);
                }
                fhci_recycle_empty_ed(fhci, ed);
                ep->hcpriv = NULL;
        }
        spin_unlock_irqrestore(&fhci->lock, flags);
}

static int fhci_get_frame_number(struct usb_hcd *hcd)
{
        struct fhci_hcd *fhci = hcd_to_fhci(hcd);

        return get_frame_num(fhci);
}

static const struct hc_driver fhci_driver = {
        .description = "fsl,usb-fhci",
        .product_desc = "FHCI HOST Controller",
        .hcd_priv_size = sizeof(struct fhci_hcd),

        /* generic hardware linkage */
        .irq = fhci_irq,
        .flags = HCD_DMA | HCD_USB11 | HCD_MEMORY,

        /* basic lifecycle operation */
        .start = fhci_start,
        .stop = fhci_stop,

        /* managing i/o requests and associated device resources */
        .urb_enqueue = fhci_urb_enqueue,
        .urb_dequeue = fhci_urb_dequeue,
        .endpoint_disable = fhci_endpoint_disable,

        /* scheduling support */
        .get_frame_number = fhci_get_frame_number,

        /* root hub support */
        .hub_status_data = fhci_hub_status_data,
        .hub_control = fhci_hub_control,
};

static int of_fhci_probe(struct platform_device *ofdev)
{
        struct device *dev = &ofdev->dev;
        struct device_node *node = dev->of_node;
        struct usb_hcd *hcd;
        struct fhci_hcd *fhci;
        struct resource usb_regs;
        unsigned long pram_addr;
        unsigned int usb_irq;
        const char *sprop;
        const u32 *iprop;
        int size;
        int ret;
        int i;
        int j;

        if (usb_disabled())
                return -ENODEV;

        sprop = of_get_property(node, "mode", NULL);
        if (sprop && strcmp(sprop, "host"))
                return -ENODEV;

        hcd = usb_create_hcd(&fhci_driver, dev, dev_name(dev));
        if (!hcd) {
                dev_err(dev, "could not create hcd\n");
                return -ENOMEM;
        }

        fhci = hcd_to_fhci(hcd);
        hcd->self.controller = dev;
        dev_set_drvdata(dev, hcd);

        iprop = of_get_property(node, "hub-power-budget", &size);
        if (iprop && size == sizeof(*iprop))
                hcd->power_budget = *iprop;

        /* FHCI registers. */
        ret = of_address_to_resource(node, 0, &usb_regs);
        if (ret) {
                dev_err(dev, "could not get regs\n");
                goto err_regs;
        }

        hcd->regs = ioremap(usb_regs.start, resource_size(&usb_regs));
        if (!hcd->regs) {
                dev_err(dev, "could not ioremap regs\n");
                ret = -ENOMEM;
                goto err_regs;
        }
        fhci->regs = hcd->regs;

        /* Parameter RAM. */
        iprop = of_get_property(node, "reg", &size);
        if (!iprop || size < sizeof(*iprop) * 4) {
                dev_err(dev, "can't get pram offset\n");
                ret = -EINVAL;
                goto err_pram;
        }

        pram_addr = cpm_muram_alloc(FHCI_PRAM_SIZE, 64);
        if (IS_ERR_VALUE(pram_addr)) {
                dev_err(dev, "failed to allocate usb pram\n");
                ret = -ENOMEM;
                goto err_pram;
        }

        qe_issue_cmd(QE_ASSIGN_PAGE_TO_DEVICE, QE_CR_SUBBLOCK_USB,
                     QE_CR_PROTOCOL_UNSPECIFIED, pram_addr);
        fhci->pram = cpm_muram_addr(pram_addr);

        /* GPIOs and pins */
        for (i = 0; i < NUM_GPIOS; i++) {
                if (i < GPIO_SPEED)
                        fhci->gpiods[i] = devm_gpiod_get_index(dev,
                                        NULL, i, GPIOD_IN);

                else
                        fhci->gpiods[i] = devm_gpiod_get_index_optional(dev,
                                        NULL, i, GPIOD_OUT_LOW);

                if (IS_ERR(fhci->gpiods[i])) {
                        dev_err(dev, "incorrect GPIO%d: %ld\n",
                                i, PTR_ERR(fhci->gpiods[i]));
                        goto err_gpios;
                }
                if (!fhci->gpiods[i]) {
                        dev_info(dev, "assuming board doesn't have "
                                 "%s gpio\n", i == GPIO_SPEED ?
                                 "speed" : "power");
                }
        }

        for (j = 0; j < NUM_PINS; j++) {
                fhci->pins[j] = qe_pin_request(dev, j);
                if (IS_ERR(fhci->pins[j])) {
                        ret = PTR_ERR(fhci->pins[j]);
                        dev_err(dev, "can't get pin %d: %d\n", j, ret);
                        goto err_pins;
                }
        }

        /* Frame limit timer and its interrupt. */
        fhci->timer = gtm_get_timer16();
        if (IS_ERR(fhci->timer)) {
                ret = PTR_ERR(fhci->timer);
                dev_err(dev, "failed to request qe timer: %i", ret);
                goto err_get_timer;
        }

        ret = request_irq(fhci->timer->irq, fhci_frame_limit_timer_irq,
                          0, "qe timer (usb)", hcd);
        if (ret) {
                dev_err(dev, "failed to request timer irq");
                goto err_timer_irq;
        }

        /* USB Host interrupt. */
        usb_irq = irq_of_parse_and_map(node, 0);
        if (!usb_irq) {
                dev_err(dev, "could not get usb irq\n");
                ret = -EINVAL;
                goto err_usb_irq;
        }

        /* Clocks. */
        sprop = of_get_property(node, "fsl,fullspeed-clock", NULL);
        if (sprop) {
                fhci->fullspeed_clk = qe_clock_source(sprop);
                if (fhci->fullspeed_clk == QE_CLK_DUMMY) {
                        dev_err(dev, "wrong fullspeed-clock\n");
                        ret = -EINVAL;
                        goto err_clocks;
                }
        }

        sprop = of_get_property(node, "fsl,lowspeed-clock", NULL);
        if (sprop) {
                fhci->lowspeed_clk = qe_clock_source(sprop);
                if (fhci->lowspeed_clk == QE_CLK_DUMMY) {
                        dev_err(dev, "wrong lowspeed-clock\n");
                        ret = -EINVAL;
                        goto err_clocks;
                }
        }

        if (fhci->fullspeed_clk == QE_CLK_NONE &&
                        fhci->lowspeed_clk == QE_CLK_NONE) {
                dev_err(dev, "no clocks specified\n");
                ret = -EINVAL;
                goto err_clocks;
        }

        dev_info(dev, "at 0x%p, irq %d\n", hcd->regs, usb_irq);

        fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);

        /* Start with full-speed, if possible. */
        if (fhci->fullspeed_clk != QE_CLK_NONE) {
                fhci_config_transceiver(fhci, FHCI_PORT_FULL);
                qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK);
        } else {
                fhci_config_transceiver(fhci, FHCI_PORT_LOW);
                qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3);
        }

        /* Clear and disable any pending interrupts. */
        out_be16(&fhci->regs->usb_usber, 0xffff);
        out_be16(&fhci->regs->usb_usbmr, 0);

        ret = usb_add_hcd(hcd, usb_irq, 0);
        if (ret < 0)
                goto err_add_hcd;

        device_wakeup_enable(hcd->self.controller);

        fhci_dfs_create(fhci);

        return 0;

err_add_hcd:
err_clocks:
        irq_dispose_mapping(usb_irq);
err_usb_irq:
        free_irq(fhci->timer->irq, hcd);
err_timer_irq:
        gtm_put_timer16(fhci->timer);
err_get_timer:
err_pins:
        while (--j >= 0)
                qe_pin_free(fhci->pins[j]);
err_gpios:
        cpm_muram_free(pram_addr);
err_pram:
        iounmap(hcd->regs);
err_regs:
        usb_put_hcd(hcd);
        return ret;
}

static void fhci_remove(struct device *dev)
{
        struct usb_hcd *hcd = dev_get_drvdata(dev);
        struct fhci_hcd *fhci = hcd_to_fhci(hcd);
        int j;

        usb_remove_hcd(hcd);
        free_irq(fhci->timer->irq, hcd);
        gtm_put_timer16(fhci->timer);
        cpm_muram_free(cpm_muram_offset(fhci->pram));
        for (j = 0; j < NUM_PINS; j++)
                qe_pin_free(fhci->pins[j]);
        fhci_dfs_destroy(fhci);
        usb_put_hcd(hcd);
}

static void of_fhci_remove(struct platform_device *ofdev)
{
        fhci_remove(&ofdev->dev);
}

static const struct of_device_id of_fhci_match[] = {
        { .compatible = "fsl,mpc8323-qe-usb", },
        {},
};
MODULE_DEVICE_TABLE(of, of_fhci_match);

static struct platform_driver of_fhci_driver = {
        .driver = {
                .name = "fsl,usb-fhci",
                .of_match_table = of_fhci_match,
        },
        .probe          = of_fhci_probe,
        .remove         = of_fhci_remove,
};

module_platform_driver(of_fhci_driver);

MODULE_DESCRIPTION("USB Freescale Host Controller Interface Driver");
MODULE_AUTHOR("Shlomi Gridish <gridish@freescale.com>, "
              "Jerry Huang <Chang-Ming.Huang@freescale.com>, "
              "Anton Vorontsov <avorontsov@ru.mvista.com>");
MODULE_LICENSE("GPL");