LXR linux/arch/tile/kernel/usb.c

   1/*
   2 * Copyright 2012 Tilera Corporation. All Rights Reserved.
   3 *
   4 *   This program is free software; you can redistribute it and/or
   5 *   modify it under the terms of the GNU General Public License
   6 *   as published by the Free Software Foundation, version 2.
   7 *
   8 *   This program is distributed in the hope that it will be useful, but
   9 *   WITHOUT ANY WARRANTY; without even the implied warranty of
  10 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  11 *   NON INFRINGEMENT.  See the GNU General Public License for
  12 *   more details.
  13 *
  14 * Register the Tile-Gx USB interfaces as platform devices.
  15 *
  16 * The actual USB driver is just some glue (in
  17 * drivers/usb/host/[eo]hci-tilegx.c) which makes the registers available
  18 * to the standard kernel EHCI and OHCI drivers.
  19 */
  20
  21#include <linux/dma-mapping.h>
  22#include <linux/platform_device.h>
  23#include <linux/usb/tilegx.h>
  24#include <linux/types.h>
  25
  26static u64 ehci_dmamask = DMA_BIT_MASK(32);
  27
  28#define USB_HOST_DEF(unit, type, dmamask) \
  29        static struct \
  30            tilegx_usb_platform_data tilegx_usb_platform_data_ ## type ## \
  31                hci ## unit = { \
  32                .dev_index = unit, \
  33        }; \
  34        \
  35        static struct platform_device tilegx_usb_ ## type ## hci ## unit = { \
  36                .name           = "tilegx-" #type "hci", \
  37                .id             = unit, \
  38                .dev = { \
  39                        .dma_mask               = dmamask, \
  40                        .coherent_dma_mask      = DMA_BIT_MASK(32), \
  41                        .platform_data = \
  42                                &tilegx_usb_platform_data_ ## type ## hci ## \
  43                                unit, \
  44                }, \
  45        };
  46
  47USB_HOST_DEF(0, e, &ehci_dmamask)
  48USB_HOST_DEF(0, o, NULL)
  49USB_HOST_DEF(1, e, &ehci_dmamask)
  50USB_HOST_DEF(1, o, NULL)
  51
  52#undef USB_HOST_DEF
  53
  54static struct platform_device *tilegx_usb_devices[] __initdata = {
  55        &tilegx_usb_ehci0,
  56        &tilegx_usb_ehci1,
  57        &tilegx_usb_ohci0,
  58        &tilegx_usb_ohci1,
  59};
  60
  61/** Add our set of possible USB devices. */
  62static int __init tilegx_usb_init(void)
  63{
  64        platform_add_devices(tilegx_usb_devices,
  65                             ARRAY_SIZE(tilegx_usb_devices));
  66
  67        return 0;
  68}
  69arch_initcall(tilegx_usb_init);
  70