acrn-kernel/arch/arm/plat-samsung/wakeup-mask.c

// SPDX-License-Identifier: GPL-2.0
//
// Copyright 2010 Ben Dooks <ben-linux@fluff.org>
//
// Support for wakeup mask interrupts on newer SoCs

#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/device.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,
			   const struct samsung_wakeup_mask *mask, int nr_mask)
{
	struct irq_data *data;
	u32 val;

	val = __raw_readl(reg);

	for (; nr_mask > 0; nr_mask--, mask++) {
		if (mask->irq == NO_WAKEUP_IRQ) {
			val |= mask->bit;
			continue;
		}

		data = irq_get_irq_data(mask->irq);

		/* bit of a liberty to read this directly from irq_data. */
		if (irqd_is_wakeup_set(data))
			val &= ~mask->bit;
		else
			val |= mask->bit;
	}

	printk(KERN_INFO "wakemask %08x => %08x\n", __raw_readl(reg), val);
	__raw_writel(val, reg);
}