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