forked from Minki/linux
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
|
/*
|
||
|
|
* OMAP hardware spinlock device initialization
|
||
|
|
*
|
||
|
|
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com
|
||
|
|
*
|
||
|
|
* Contact: Simon Que <sque@ti.com>
|
||
|
|
* Hari Kanigeri <h-kanigeri2@ti.com>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* version 2 as published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* 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 <linux/kernel.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/err.h>
|
||
|
|
|
||
|
|
#include <plat/omap_hwmod.h>
|
||
|
|
#include <plat/omap_device.h>
|
||
|
|
|
||
|
|
struct omap_device_pm_latency omap_spinlock_latency[] = {
|
||
|
|
{
|
||
|
|
.deactivate_func = omap_device_idle_hwmods,
|
||
|
|
.activate_func = omap_device_enable_hwmods,
|
||
|
|
.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
int __init hwspinlocks_init(void)
|
||
|
|
{
|
||
|
|
int retval = 0;
|
||
|
|
struct omap_hwmod *oh;
|
||
|
|
struct omap_device *od;
|
||
|
|
const char *oh_name = "spinlock";
|
||
|
|
const char *dev_name = "omap_hwspinlock";
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Hwmod lookup will fail in case our platform doesn't support the
|
||
|
|
* hardware spinlock module, so it is safe to run this initcall
|
||
|
|
* on all omaps
|
||
|
|
*/
|
||
|
|
oh = omap_hwmod_lookup(oh_name);
|
||
|
|
if (oh == NULL)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
od = omap_device_build(dev_name, 0, oh, NULL, 0,
|
||
|
|
omap_spinlock_latency,
|
||
|
|
ARRAY_SIZE(omap_spinlock_latency), false);
|
||
|
|
if (IS_ERR(od)) {
|
||
|
|
pr_err("Can't build omap_device for %s:%s\n", dev_name,
|
||
|
|
oh_name);
|
||
|
|
retval = PTR_ERR(od);
|
||
|
|
}
|
||
|
|
|
||
|
|
return retval;
|
||
|
|
}
|
||
|
|
/* early board code might need to reserve specific hwspinlock instances */
|
||
|
|
postcore_initcall(hwspinlocks_init);
|