2> 在这个驱动源码里我们可以看到设备树的驱动就是根据“gpio-keys-polled“进行匹配的,当我们设备树里的compatible对应的名字和驱动源码里的名字匹配时,Bus总线上就会触发gpio_keys_polled_probe函数,其他部分的内容,我们可以通过百度去查找理解。 3>接下来我们把CH05_gpio_keys文件里的所有设备树内容拷贝到如下路径。
#define AP143_KEYS_POLL_INTERVAL 20 /* msecs */ #define AP143_KEYS_DEBOUNCE_INTERVAL (3 * AP143_KEYS_POLL_INTERVAL) #define AP143_MAC0_OFFSET 5 //0 #define AP143_MAC1_OFFSET 6 #define AP143_WMAC_CALDATA_OFFSET 0x1000 // ... static struct spi_board_info spi_test = { .modali...
gpio-keys-polled 驱动裁剪注意事项 内核模块的 “gpio-keys-polled”,驱动位于drivers/input/keyboard/ 路径下, 路由系统的 “gpio-keys-polled”,驱动位于 openWrt源码的 package/kernel/gpio-button-hotplug/路径下, 由此得出 内核模块与路...Linux查看驱动模块之间的依赖关系的方法 Linux 查看驱动模块之间的依赖...
This variable can be polled + cleared to 0 using * WMI. But since the variable is set on both edges the WMI * interface is pretty useless even when polling. * So instead the x86-android-tablets code instantiates * a gpio-keys platform device for it. * Ignore the _AEI handler for ...
gpio_keys { compatible = "gpio-keys"; pinctrl-names = "default"; #address-cells = <1>; #size-cells = <0>; autorepeat; button@0 { label = "Key back"; linux,code = <KEY_BACK>; gpios = <&pio 3 10 GPIO_ACTIVE_LOW>; /* PD10 */ }; }; linux 配置文件 ./output/build/linux...