linux/arch/arm/plat-samsung/wakeup-mask.c
Krzysztof Kozlowski 9060a4172f ARM: SAMSUNG: Constify array of wake irqs passed to samsung_sync_wakemask
The samsung_sync_wakemask() iterates over passed array of wake irqs but
does not modify it.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2016-12-29 15:40:51 +02:00

48 lines
1.1 KiB
C

/* 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/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);
}