48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
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/* arch/arm/plat-samsung/wakeup-mask.c
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*
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* Copyright 2010 Ben Dooks <ben-linux@fluff.org>
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*
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* Support for wakeup mask interrupts on newer SoCs
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/spinlock.h>
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#include <linux/sysdev.h>
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#include <linux/types.h>
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#include <linux/irq.h>
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#include <linux/io.h>
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#include <plat/wakeup-mask.h>
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#include <plat/pm.h>
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void samsung_sync_wakemask(void __iomem *reg,
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struct samsung_wakeup_mask *mask, int nr_mask)
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{
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struct irq_desc *desc;
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u32 val;
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val = __raw_readl(reg);
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for (; nr_mask > 0; nr_mask--, mask++) {
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if (mask->irq == NO_WAKEUP_IRQ) {
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val |= mask->bit;
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continue;
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}
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desc = irq_to_desc(mask->irq);
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/* bit of a liberty to read this directly from irq_desc. */
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if (desc->wake_depth > 0)
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val &= ~mask->bit;
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else
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val |= mask->bit;
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}
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printk(KERN_INFO "wakemask %08x => %08x\n", __raw_readl(reg), val);
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__raw_writel(val, reg);
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}
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