forked from Bananymous/banan-os
70 lines
1.3 KiB
C++
70 lines
1.3 KiB
C++
#pragma once
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#include <BAN/CircularQueue.h>
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#include <kernel/Input/KeyEvent.h>
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#include <kernel/Input/PS2Controller.h>
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#include <kernel/Input/PS2Keymap.h>
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#include <kernel/Semaphore.h>
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namespace Kernel::Input
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{
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class PS2Keyboard final : public PS2Device
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{
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private:
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enum Command : uint8_t
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{
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SET_LEDS = 0xED,
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SCANCODE = 0xF0,
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ENABLE_SCANNING = 0xF4,
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DISABLE_SCANNING = 0xF5,
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};
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enum class State
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{
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Normal,
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WaitingAck,
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};
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public:
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static BAN::ErrorOr<PS2Keyboard*> create(PS2Controller&);
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virtual void on_byte(uint8_t) override;
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virtual void update() override;
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private:
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PS2Keyboard(PS2Controller& controller);
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BAN::ErrorOr<void> initialize();
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void append_command_queue(uint8_t);
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void append_command_queue(uint8_t, uint8_t);
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void buffer_has_key();
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void update_leds();
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private:
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PS2Controller& m_controller;
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uint8_t m_byte_buffer[10];
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uint8_t m_byte_index { 0 };
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uint8_t m_modifiers { 0 };
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BAN::CircularQueue<KeyEvent, 10> m_event_queue;
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BAN::CircularQueue<uint8_t, 10> m_command_queue;
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PS2Keymap m_keymap;
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State m_state { State::Normal };
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Semaphore m_semaphore;
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public:
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virtual dev_t rdev() const override { return m_rdev; }
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virtual BAN::ErrorOr<size_t> read(size_t, void*, size_t) override;
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private:
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const dev_t m_rdev;
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};
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} |