1 use alloc::sync::Arc; 2 use system_error::SystemError; 3 4 use crate::driver::base::device::{bus::Bus, device_manager, Device}; 5 6 use super::serio_bus; 7 8 /// 串行设备，实现该trait的设备实例挂载在serio总线上，同时应该实现Device trait 9 /// 10 /// 参考: https://code.dragonos.org.cn/xref/linux-6.1.9/include/linux/serio.h#20 11 #[allow(dead_code)] 12 pub trait SerioDevice: Device { 13 /// # 函数功能 14 /// 15 /// Serio设备写入数据 16 /// 17 /// ## 参数 18 /// 19 /// - data 写入的数据 20 /// 21 /// ## 返回值 22 /// 23 /// 无 24 fn write(&self, device: &Arc<dyn SerioDevice>, data: u8) -> Result<(), SystemError>; 25 /// Serio设备连接驱动时调用 26 fn open(&self, device: &Arc<dyn SerioDevice>) -> Result<(), SystemError>; 27 /// Serio设备断开驱动时调用 28 fn close(&self, device: &Arc<dyn SerioDevice>) -> Result<(), SystemError>; 29 /// Serio设备初始化时调用 30 fn start(&self, device: &Arc<dyn SerioDevice>) -> Result<(), SystemError>; 31 /// Serio设备销毁时调用 32 fn stop(&self, device: &Arc<dyn SerioDevice>) -> Result<(), SystemError>; 33 } 34 35 #[inline(always)] 36 pub fn serio_device_manager() -> &'static SerioDeviceManager { 37 &SerioDeviceManager 38 } 39 40 pub struct SerioDeviceManager; 41 42 impl SerioDeviceManager { 43 /// # 函数功能 44 /// 注册Serio设备 45 /// 46 /// ## 参数 47 /// - device 待注册的设备 48 /// 49 /// ## 返回值 50 /// 无 51 pub fn register_port(&self, device: Arc<dyn SerioDevice>) -> Result<(), SystemError> { 52 self.init_port(device) 53 } 54 55 /// # 函数功能 56 /// 初始化Serio设备 57 /// 58 /// ## 参数 59 /// - device 待初始化的Serio设备 60 /// 61 /// ## 返回值 62 /// 无 63 /// 64 /// todo：https://code.dragonos.org.cn/xref/linux-6.1.9/drivers/input/serio/serio.c#494 65 pub fn init_port(&self, device: Arc<dyn SerioDevice>) -> Result<(), SystemError> { 66 device.set_bus(Some(Arc::downgrade(&(serio_bus() as Arc<dyn Bus>)))); 67 device_manager().add_device(device.clone() as Arc<dyn Device>)?; 68 Ok(()) 69 } 70 } 71