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