添加FrameBuffer的接口抽象&完善设备驱动模型的class相关代码 (#472)

* 添加FrameBuffer的接口抽象（参考Linux 6.1.9）

* feature: 完善设备驱动模型的class的抽象,并创建graphics class

* feature: 完善设备驱动模型中Device对class的处理,使得能够在class下注册设备

目前注册了fbcon设备,但是由于虚拟终端还没写,因此fbcon的到终端以及帧缓冲区的映射还没加上去.

kernel/src/driver/base/platform/mod.rs

@@ -73,7 +73,7 @@ impl CompatibleTable {
 pub fn platform_bus_init() -> Result<(), SystemError> {
     let platform_device: Arc<PlatformBusDevice> = PlatformBusDevice::new(
         DevicePrivateData::new(
-            IdTable::new("platform".to_string(), DeviceNumber::new(0)),
+            IdTable::new("platform".to_string(), Some(DeviceNumber::new(0))),
             BusState::NotInitialized.into(),
         ),
         Some(Arc::downgrade(&(sys_devices_kset() as Arc<dyn KObject>))),

kernel/src/driver/base/platform/platform_device.rs

@@ -6,6 +6,7 @@ use ida::IdAllocator;
 
 use crate::{
     driver::base::{
+        class::Class,
         device::{
             bus::{Bus, BusState},
             device_manager,
@@ -287,7 +288,7 @@ impl Device for PlatformBusDevice {
     #[inline]
     #[allow(dead_code)]
     fn id_table(&self) -> IdTable {
-        IdTable::new("platform".to_string(), DeviceNumber::new(0))
+        IdTable::new("platform".to_string(), Some(DeviceNumber::new(0)))
     }
 
     fn bus(&self) -> Option<Arc<dyn Bus>> {
@@ -322,4 +323,8 @@ impl Device for PlatformBusDevice {
     fn state_synced(&self) -> bool {
         todo!()
     }
+
+    fn set_class(&self, _class: Option<Arc<dyn Class>>) {
+        todo!()
+    }
 }

kernel/src/driver/base/platform/subsys.rs

@@ -30,10 +30,10 @@ pub struct PlatformBus {
 impl PlatformBus {
     pub fn new() -> Arc<Self> {
         let w: Weak<Self> = Weak::new();
-        let private = SubSysPrivate::new("platform".to_string(), w, &[]);
+        let private = SubSysPrivate::new("platform".to_string(), Some(w), None, &[]);
         let bus = Arc::new(Self { private });
         bus.subsystem()
-            .set_bus(Arc::downgrade(&(bus.clone() as Arc<dyn Bus>)));
+            .set_bus(Some(Arc::downgrade(&(bus.clone() as Arc<dyn Bus>))));
 
         return bus;
     }