Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
wakeup-mask.c
Go to the documentation of this file.
1 /* arch/arm/plat-samsung/wakeup-mask.c
2  *
3  * Copyright 2010 Ben Dooks <[email protected]>
4  *
5  * Support for wakeup mask interrupts on newer SoCs
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10 */
11 
12 #include <linux/kernel.h>
13 #include <linux/spinlock.h>
14 #include <linux/device.h>
15 #include <linux/types.h>
16 #include <linux/irq.h>
17 #include <linux/io.h>
18 
19 #include <plat/wakeup-mask.h>
20 #include <plat/pm.h>
21 
23  struct samsung_wakeup_mask *mask, int nr_mask)
24 {
25  struct irq_data *data;
26  u32 val;
27 
28  val = __raw_readl(reg);
29 
30  for (; nr_mask > 0; nr_mask--, mask++) {
31  if (mask->irq == NO_WAKEUP_IRQ) {
32  val |= mask->bit;
33  continue;
34  }
35 
36  data = irq_get_irq_data(mask->irq);
37 
38  /* bit of a liberty to read this directly from irq_data. */
39  if (irqd_is_wakeup_set(data))
40  val &= ~mask->bit;
41  else
42  val |= mask->bit;
43  }
44 
45  printk(KERN_INFO "wakemask %08x => %08x\n", __raw_readl(reg), val);
46  __raw_writel(val, reg);
47 }