47fc28bff8
This change adds OHCI and EHCI support for the tilegx's on-chip USB hardware. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
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* Copyright 2012 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*
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* Register the Tile-Gx USB interfaces as platform devices.
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*
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* The actual USB driver is just some glue (in
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* drivers/usb/host/[eo]hci-tilegx.c) which makes the registers available
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* to the standard kernel EHCI and OHCI drivers.
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*/
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#include <linux/dma-mapping.h>
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#include <linux/platform_device.h>
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#include <linux/usb/tilegx.h>
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#include <linux/types.h>
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static u64 ehci_dmamask = DMA_BIT_MASK(32);
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#define USB_HOST_DEF(unit, type, dmamask) \
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static struct \
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tilegx_usb_platform_data tilegx_usb_platform_data_ ## type ## \
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hci ## unit = { \
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.dev_index = unit, \
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}; \
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\
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static struct platform_device tilegx_usb_ ## type ## hci ## unit = { \
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.name = "tilegx-" #type "hci", \
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.id = unit, \
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.dev = { \
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.dma_mask = dmamask, \
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.coherent_dma_mask = DMA_BIT_MASK(32), \
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.platform_data = \
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&tilegx_usb_platform_data_ ## type ## hci ## \
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unit, \
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}, \
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};
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USB_HOST_DEF(0, e, &ehci_dmamask)
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USB_HOST_DEF(0, o, NULL)
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USB_HOST_DEF(1, e, &ehci_dmamask)
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USB_HOST_DEF(1, o, NULL)
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#undef USB_HOST_DEF
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static struct platform_device *tilegx_usb_devices[] __initdata = {
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&tilegx_usb_ehci0,
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&tilegx_usb_ehci1,
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&tilegx_usb_ohci0,
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&tilegx_usb_ohci1,
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};
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/** Add our set of possible USB devices. */
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static int __init tilegx_usb_init(void)
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{
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platform_add_devices(tilegx_usb_devices,
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ARRAY_SIZE(tilegx_usb_devices));
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return 0;
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}
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arch_initcall(tilegx_usb_init);
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