1// SPDX-License-Identifier: GPL-2.0
2//
3// Copyright 2010 Ben Dooks <ben-linux@fluff.org>
4//
5// Support for wakeup mask interrupts on newer SoCs
6
7#include <linux/kernel.h>
8#include <linux/spinlock.h>
9#include <linux/device.h>
10#include <linux/types.h>
11#include <linux/irq.h>
12#include <linux/io.h>
13
14#include "wakeup-mask.h"
15#include "pm.h"
16
17void samsung_sync_wakemask(void __iomem *reg,
18			   const struct samsung_wakeup_mask *mask, int nr_mask)
19{
20	struct irq_data *data;
21	u32 val;
22
23	val = __raw_readl(reg);
24
25	for (; nr_mask > 0; nr_mask--, mask++) {
26		if (mask->irq == NO_WAKEUP_IRQ) {
27			val |= mask->bit;
28			continue;
29		}
30
31		data = irq_get_irq_data(mask->irq);
32
33		/* bit of a liberty to read this directly from irq_data. */
34		if (irqd_is_wakeup_set(data))
35			val &= ~mask->bit;
36		else
37			val |= mask->bit;
38	}
39
40	printk(KERN_INFO "wakemask %08x => %08x\n", __raw_readl(reg), val);
41	__raw_writel(val, reg);
42}
43