ci13xxx_pci.c

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/*
 * ci13xxx_pci.c - MIPS USB IP core family device controller
 *
 * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
 *
 * Author: David Lopo
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/usb/gadget.h>
#include <linux/usb/chipidea.h>

/* driver name */
#define UDC_DRIVER_NAME   "ci13xxx_pci"

/******************************************************************************
 * PCI block
 *****************************************************************************/
struct ci13xxx_platform_data pci_platdata = {
    .name       = UDC_DRIVER_NAME,
    .capoffset  = DEF_CAPOFFSET,
};

struct ci13xxx_platform_data langwell_pci_platdata = {
    .name       = UDC_DRIVER_NAME,
    .capoffset  = 0,
};

struct ci13xxx_platform_data penwell_pci_platdata = {
    .name       = UDC_DRIVER_NAME,
    .capoffset  = 0,
    .power_budget   = 200,
};

static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
                       const struct pci_device_id *id)
{
    struct ci13xxx_platform_data *platdata = (void *)id->driver_data;
    struct platform_device *plat_ci;
    struct resource res[3];
    int retval = 0, nres = 2;

    if (!platdata) {
        dev_err(&pdev->dev, "device doesn't provide driver data\n");
        return -ENODEV;
    }

    retval = pci_enable_device(pdev);
    if (retval)
        goto done;

    if (!pdev->irq) {
        dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
        retval = -ENODEV;
        goto disable_device;
    }

    pci_set_power_state(pdev, PCI_D0);
    pci_set_master(pdev);
    pci_try_set_mwi(pdev);

    memset(res, 0, sizeof(res));
    res[0].start    = pci_resource_start(pdev, 0);
    res[0].end  = pci_resource_end(pdev, 0);
    res[0].flags    = IORESOURCE_MEM;
    res[1].start    = pdev->irq;
    res[1].flags    = IORESOURCE_IRQ;

    plat_ci = ci13xxx_add_device(&pdev->dev, res, nres, platdata);
    if (IS_ERR(plat_ci)) {
        dev_err(&pdev->dev, "ci13xxx_add_device failed!\n");
        retval = PTR_ERR(plat_ci);
        goto disable_device;
    }

    pci_set_drvdata(pdev, plat_ci);

    return 0;

 disable_device:
    pci_disable_device(pdev);
 done:
    return retval;
}

static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev)
{
    struct platform_device *plat_ci = pci_get_drvdata(pdev);

    ci13xxx_remove_device(plat_ci);
    pci_set_drvdata(pdev, NULL);
    pci_disable_device(pdev);
}

static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = {
    {
        PCI_DEVICE(0x153F, 0x1004),
        .driver_data = (kernel_ulong_t)&pci_platdata,
    },
    {
        PCI_DEVICE(0x153F, 0x1006),
        .driver_data = (kernel_ulong_t)&pci_platdata,
    },
    {
        PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
        .driver_data = (kernel_ulong_t)&langwell_pci_platdata,
    },
    {
        PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
        .driver_data = (kernel_ulong_t)&penwell_pci_platdata,
    },
    { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, ci13xxx_pci_id_table);

static struct pci_driver ci13xxx_pci_driver = {
    .name         = UDC_DRIVER_NAME,
    .id_table     = ci13xxx_pci_id_table,
    .probe        = ci13xxx_pci_probe,
    .remove       = __devexit_p(ci13xxx_pci_remove),
};

module_pci_driver(ci13xxx_pci_driver);

MODULE_AUTHOR("MIPS - David Lopo <[email protected]>");
MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller");
MODULE_LICENSE("GPL");
MODULE_VERSION("June 2008");