andoid添加一个休眠唤醒源.doc

最近需要做个唤醒功能，当按键的时候android系统唤醒并点亮屏，在长按键中，系统不能在进入睡眠。 驱动方面： 1：在平台设备文件中添加 一个按键，定义为唤醒源 \arch\arm\mach-s5pv210 [cpp]view plaincopyprint? static struct gpio_keys_button gpio_buttons[] = { { .gpio = S5PV210_GPH1(3), .code = KEY_F22, //对应 192 .desc = F22, .active_low = 1, .wakeup = 1, .debounce_interval =100, //去抖动 }, } static struct gpio_keys_platform_data gpio_button_data = { .buttons = gpio_buttons, .nbuttons = ARRAY_SIZE(gpio_buttons), }; static struct platform_device s3c_device_gpio_button = { .name = gpio-keys, .id = -1, .num_resources = 0, .dev = { .platform_data = gpio_button_data, } }; platform_add_devices(smdkc110_devices, ARRAY_SIZE(smdkc110_devices)); 2:添加驱动\kernel-vdrivers\input\keyboard\s3c-gpio-keys.c [cpp]view plaincopyprint? struct s3c_gpio_key{ int pin; int eint; int eintcfg; int inputcfg; }; struct s3c_gpio_key s3c_gpio_keys[]= { ///* { .pin = S5PV210_GPH1(3), //at base wake up .eintcfg = 0X0f12, .inputcfg = 012, .eint = IRQ_EINT11, }, // */ }; //申请中断为上/下沿出发方式。 [cpp]view plaincopyprint? error = request_irq(s3c_gpio_keys[i].eint, gpio_keys_isr, IRQF_SAMPLE_RANDOM | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, button-desc ? button-desc : gpio_keys, bdata); [cpp]view plaincopyprint? static void gpio_keys_report_event(struct gpio_button_data *bdata) { struct gpio_keys_button *button = bdata-button; struct input_dev *input = bdata-input; unsigned int type = button-type ?: EV_KEY; int state = (gpio_get_value(button-gpio) ? 1 : 0) ^ button-active_low; //add by xiao@2012-0620:for wake up mid when it on base. //上报事件处理下，因会发生系统唤醒后，又马上进入睡眠，造成一种假唤醒状态，所以当按键时，不时上报此事件来唤醒系统 if(button-code == 192){ if(state)