usb.c

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/*
 * Copyright 2012 Tilera Corporation. All Rights Reserved.
 *
 *   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, version 2.
 *
 *   This program is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *   NON INFRINGEMENT.  See the GNU General Public License for
 *   more details.
 *
 * Register the Tile-Gx USB interfaces as platform devices.
 *
 * The actual USB driver is just some glue (in
 * drivers/usb/host/[eo]hci-tilegx.c) which makes the registers available
 * to the standard kernel EHCI and OHCI drivers.
 */

#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/usb/tilegx.h>
#include <linux/types.h>

static u64 ehci_dmamask = DMA_BIT_MASK(32);

#define USB_HOST_DEF(unit, type, dmamask) \
    static struct \
        tilegx_usb_platform_data tilegx_usb_platform_data_ ## type ## \
        hci ## unit = { \
        .dev_index = unit, \
    }; \
    \
    static struct platform_device tilegx_usb_ ## type ## hci ## unit = { \
        .name       = "tilegx-" #type "hci", \
        .id     = unit, \
        .dev = { \
            .dma_mask       = dmamask, \
            .coherent_dma_mask  = DMA_BIT_MASK(32), \
            .platform_data = \
                &tilegx_usb_platform_data_ ## type ## hci ## \
                unit, \
        }, \
    };

USB_HOST_DEF(0, e, &ehci_dmamask)
USB_HOST_DEF(0, o, NULL)
USB_HOST_DEF(1, e, &ehci_dmamask)
USB_HOST_DEF(1, o, NULL)

#undef USB_HOST_DEF

static struct platform_device *tilegx_usb_devices[] __initdata = {
    &tilegx_usb_ehci0,
    &tilegx_usb_ehci1,
    &tilegx_usb_ohci0,
    &tilegx_usb_ohci1,
};

static int __init tilegx_usb_init(void)
{
    platform_add_devices(tilegx_usb_devices,
                 ARRAY_SIZE(tilegx_usb_devices));

    return 0;
}
arch_initcall(tilegx_usb_init);