projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 0317e52e BD |
1 | /* arch/arm/plat-samsung/wakeup-mask.c |
| 2 | * | |
| 3 | * Copyright 2010 Ben Dooks <ben-linux@fluff.org> | |
| 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/sysdev.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 | ||
| 22 | void samsung_sync_wakemask(void __iomem *reg, | |
| 23 | struct samsung_wakeup_mask *mask, int nr_mask) | |
| 24 | { | |
| 25 | struct irq_desc *desc; | |
| 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 | desc = irq_to_desc(mask->irq); | |
| 37 | ||
| 38 | /* bit of a liberty to read this directly from irq_desc. */ | |
| 39 | if (desc->wake_depth > 0) | |
| 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 | } |