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Kernel/HID: Add methods to attach and detach standalone devices

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Liav A 2022-03-05 14:12:36 +02:00 committed by Jelle Raaijmakers
parent 83835c7256
commit 62c2c9df69
Notes: sideshowbarker 2024-07-17 11:06:06 +09:00 
Author: https://github.com/supercomputer7
Commit: https://github.com/SerenityOS/serenity/commit/62c2c9df69
Pull-request: https://github.com/SerenityOS/serenity/pull/21085
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/FireFox317
Reviewed-by: https://github.com/Hendiadyoin1 ✅
Reviewed-by: https://github.com/gmta ✅
3 changed files with 27 additions and 0 deletions
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4
Kernel/Devices/HID/Device.h
View file

@ -11,7 +11,9 @@
namespace Kernel {
class HIDManagement;
class HIDDevice : public CharacterDevice {
friend class HIDManagement;
protected:
HIDDevice(MajorNumber major, MinorNumber minor)
@ -20,6 +22,8 @@ protected:
}
EntropySource m_entropy_source;
IntrusiveListNode<HIDDevice, NonnullRefPtr<HIDDevice>> m_list_node;
};
}

14
Kernel/Devices/HID/Management.cpp
View file

@ -115,6 +115,20 @@ void HIDManagement::set_maps(NonnullOwnPtr<KString> character_map_name, Keyboard
});
}
void HIDManagement::detach_standalone_hid_device(HIDDevice& device)
{
m_standalone_hid_devices.with([&](auto& list) {
list.remove(device);
});
}
void HIDManagement::attach_standalone_hid_device(HIDDevice& device)
{
m_standalone_hid_devices.with([&](auto& list) {
list.append(device);
});
}
UNMAP_AFTER_INIT ErrorOr<void> HIDManagement::enumerate()
{
// FIXME: When we have USB HID support, we should ensure that we disable

9
Kernel/Devices/HID/Management.h
View file

@ -7,6 +7,7 @@
#pragma once
#include <AK/Atomic.h>
#include <AK/Badge.h>
#include <AK/CircularQueue.h>
#include <AK/Error.h>
#include <AK/IntrusiveList.h>
@ -15,6 +16,7 @@
#include <AK/Types.h>
#include <Kernel/API/KeyCode.h>
#include <Kernel/Bus/SerialIO/Controller.h>
#include <Kernel/Devices/HID/Device.h>
#include <Kernel/Locking/Spinlock.h>
#include <Kernel/Locking/SpinlockProtected.h>
#include <Kernel/UnixTypes.h>
@ -51,6 +53,9 @@ public:
void set_client(KeyboardClient* client);
void set_maps(NonnullOwnPtr<KString> character_map_name, Keyboard::CharacterMapData const& character_map);
void attach_standalone_hid_device(HIDDevice&);
void detach_standalone_hid_device(HIDDevice&);
private:
size_t generate_minor_device_number_for_mouse();
size_t generate_minor_device_number_for_keyboard();
@ -61,6 +66,10 @@ private:
KeyboardClient* m_client { nullptr };
SpinlockProtected<IntrusiveList<&SerialIOController::m_list_node>, LockRank::None> m_hid_serial_io_controllers;
// NOTE: This list is used for standalone devices, like USB HID devices
// (which are not attached via a SerialIO controller in the sense that
// there's no specific serial IO controller to coordinate their usage).
SpinlockProtected<IntrusiveList<&HIDDevice::m_list_node>, LockRank::None> m_standalone_hid_devices;
Spinlock<LockRank::None> m_client_lock;
};