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/* arch/arm/plat-samsung/wakeup-mask.c
*
* Copyright 2010 Ben Dooks <ben-linux@fluff.org>
*
* Support for wakeup mask interrupts on newer SoCs
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/sysdev.h>
#include <linux/types.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <plat/wakeup-mask.h>
#include <plat/pm.h>
void samsung_sync_wakemask(void __iomem *reg,
struct samsung_wakeup_mask *mask, int nr_mask)
{
struct irq_desc *desc;
u32 val;
val = __raw_readl(reg);
for (; nr_mask > 0; nr_mask--, mask++) {
if (mask->irq == NO_WAKEUP_IRQ) {
val |= mask->bit;
continue;
}
desc = irq_to_desc(mask->irq);
/* bit of a liberty to read this directly from irq_desc. */
if (desc->wake_depth > 0)
val &= ~mask->bit;
else
val |= mask->bit;
}
printk(KERN_INFO "wakemask %08x => %08x\n", __raw_readl(reg), val);
__raw_writel(val, reg);
}
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