mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 14:21:47 +00:00
d1d24ed481
Based on 1 normalized pattern(s): this code is released under the gpl version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528171438.985972314@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Virtual EISA root driver.
|
|
* Acts as a placeholder if we don't have a proper EISA bridge.
|
|
*
|
|
* (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/eisa.h>
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/init.h>
|
|
|
|
#if defined(CONFIG_ALPHA_JENSEN) || defined(CONFIG_EISA_VLB_PRIMING)
|
|
#define EISA_FORCE_PROBE_DEFAULT 1
|
|
#else
|
|
#define EISA_FORCE_PROBE_DEFAULT 0
|
|
#endif
|
|
|
|
static int force_probe = EISA_FORCE_PROBE_DEFAULT;
|
|
static void virtual_eisa_release (struct device *);
|
|
|
|
/* The default EISA device parent (virtual root device).
|
|
* Now use a platform device, since that's the obvious choice. */
|
|
|
|
static struct platform_device eisa_root_dev = {
|
|
.name = "eisa",
|
|
.id = 0,
|
|
.dev = {
|
|
.release = virtual_eisa_release,
|
|
},
|
|
};
|
|
|
|
static struct eisa_root_device eisa_bus_root = {
|
|
.dev = &eisa_root_dev.dev,
|
|
.bus_base_addr = 0,
|
|
.res = &ioport_resource,
|
|
.slots = EISA_MAX_SLOTS,
|
|
.dma_mask = 0xffffffff,
|
|
};
|
|
|
|
static void virtual_eisa_release (struct device *dev)
|
|
{
|
|
/* nothing really to do here */
|
|
}
|
|
|
|
static int __init virtual_eisa_root_init (void)
|
|
{
|
|
int r;
|
|
|
|
if ((r = platform_device_register (&eisa_root_dev)))
|
|
return r;
|
|
|
|
eisa_bus_root.force_probe = force_probe;
|
|
|
|
dev_set_drvdata(&eisa_root_dev.dev, &eisa_bus_root);
|
|
|
|
if (eisa_root_register (&eisa_bus_root)) {
|
|
/* A real bridge may have been registered before
|
|
* us. So quietly unregister. */
|
|
platform_device_unregister (&eisa_root_dev);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
module_param (force_probe, int, 0444);
|
|
|
|
device_initcall (virtual_eisa_root_init);
|