diff options
Diffstat (limited to 'arch/arm/mach-pxa/pxa25x.c')
| -rw-r--r-- | arch/arm/mach-pxa/pxa25x.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index ef40c049d9e..0d6a72504ca 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -227,10 +227,52 @@ static void __init pxa25x_init_pm(void) } #endif +/* PXA25x: supports wakeup from GPIO0..GPIO15 and RTC alarm + */ + +static int pxa25x_set_wake(unsigned int irq, unsigned int on) +{ + int gpio = IRQ_TO_GPIO(irq); + uint32_t gpio_bit, mask = 0; + + if (gpio >= 0 && gpio <= 15) { + gpio_bit = GPIO_bit(gpio); + mask = gpio_bit; + if (on) { + if (GRER(gpio) | gpio_bit) + PRER |= gpio_bit; + else + PRER &= ~gpio_bit; + + if (GFER(gpio) | gpio_bit) + PFER |= gpio_bit; + else + PFER &= ~gpio_bit; + } + goto set_pwer; + } + + if (irq == IRQ_RTCAlrm) { + mask = PWER_RTC; + goto set_pwer; + } + + return -EINVAL; + +set_pwer: + if (on) + PWER |= mask; + else + PWER &=~mask; + + return 0; +} + void __init pxa25x_init_irq(void) { pxa_init_irq_low(); pxa_init_irq_gpio(85); + pxa_init_irq_set_wake(pxa25x_set_wake); } static struct platform_device *pxa25x_devices[] __initdata = { |