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
17 void 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
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