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/*
* xen/arch/arm/device.c
*
* Helpers to use a device retrieved via the device tree.
*
* Julien Grall <julien.grall@linaro.org>
* Copyright (C) 2013 Linaro Limited.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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. See the
* GNU General Public License for more details.
*/
#include <asm/device.h>
#include <xen/errno.h>
#include <xen/init.h>
#include <xen/lib.h>
extern const struct device_desc _sdevice[], _edevice[];
extern const struct acpi_device_desc _asdevice[], _aedevice[];
int __init device_init(struct dt_device_node *dev, enum device_class class,
const void *data)
{
const struct device_desc *desc;
ASSERT(dev != NULL);
if ( !dt_device_is_available(dev) || dt_device_for_passthrough(dev) )
return -ENODEV;
for ( desc = _sdevice; desc != _edevice; desc++ )
{
if ( desc->class != class )
continue;
if ( dt_match_node(desc->dt_match, dev) )
{
ASSERT(desc->init != NULL);
return desc->init(dev, data);
}
}
return -EBADF;
}
int __init acpi_device_init(enum device_class class, const void *data, int class_type)
{
const struct acpi_device_desc *desc;
for ( desc = _asdevice; desc != _aedevice; desc++ )
{
if ( ( desc->class != class ) || ( desc->class_type != class_type ) )
continue;
ASSERT(desc->init != NULL);
return desc->init(data);
}
return -EBADF;
}
enum device_class device_get_class(const struct dt_device_node *dev)
{
const struct device_desc *desc;
ASSERT(dev != NULL);
for ( desc = _sdevice; desc != _edevice; desc++ )
{
if ( dt_match_node(desc->dt_match, dev) )
return desc->class;
}
return DEVICE_UNKNOWN;
}
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*/
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