diff options
Diffstat (limited to 'arch/arm/mach-pxa/irq.c')
| -rw-r--r-- | arch/arm/mach-pxa/irq.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c index 07acb45b16ea..5a1d5eef10a4 100644 --- a/arch/arm/mach-pxa/irq.c +++ b/arch/arm/mach-pxa/irq.c @@ -15,6 +15,7 @@ #include <linux/init.h> #include <linux/module.h> #include <linux/interrupt.h> +#include <linux/sysdev.h> #include <asm/hardware.h> #include <asm/irq.h> @@ -321,3 +322,64 @@ void __init pxa_init_irq_set_wake(int (*set_wake)(unsigned int, unsigned int)) pxa_low_gpio_chip.set_wake = set_wake; pxa_muxed_gpio_chip.set_wake = set_wake; } + +#ifdef CONFIG_PM +static unsigned long saved_icmr[2]; + +static int pxa_irq_suspend(struct sys_device *dev, pm_message_t state) +{ + switch (dev->id) { + case 0: + saved_icmr[0] = ICMR; + ICMR = 0; + break; +#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx) + case 1: + saved_icmr[1] = ICMR2; + ICMR2 = 0; + break; +#endif + default: + return -EINVAL; + } + + return 0; +} + +static int pxa_irq_resume(struct sys_device *dev) +{ + switch (dev->id) { + case 0: + ICMR = saved_icmr[0]; + ICLR = 0; + ICCR = 1; + break; +#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx) + case 1: + ICMR2 = saved_icmr[1]; + ICLR2 = 0; + break; +#endif + default: + return -EINVAL; + } + + return 0; +} +#else +#define pxa_irq_suspend NULL +#define pxa_irq_resume NULL +#endif + +struct sysdev_class pxa_irq_sysclass = { + .name = "irq", + .suspend = pxa_irq_suspend, + .resume = pxa_irq_resume, +}; + +static int __init pxa_irq_init(void) +{ + return sysdev_class_register(&pxa_irq_sysclass); +} + +core_initcall(pxa_irq_init); |