mirror of
https://github.com/RGBCube/serenity
synced 2025-10-18 01:32:25 +00:00
dab6dbe893
Since we can now build and use the IRQHandler class, we can implement interrupt support for the Timer in the aarch64 build.
63 lines
1.2 KiB
C++
63 lines
1.2 KiB
C++
/*
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* Copyright (c) 2021, Nico Weber <thakis@chromium.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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namespace Kernel::RPi {
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struct TimerRegisters;
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class Timer : public IRQHandler {
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public:
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Timer();
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static Timer& the();
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u64 microseconds_since_boot();
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void set_interrupt_interval_usec(u32);
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void enable_interrupt_mode();
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enum class ClockID {
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Reserved = 0,
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EMMC = 1,
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UART = 2,
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ARM = 3,
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CORE = 4,
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V3D = 5,
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H264 = 6,
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ISP = 7,
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SDRAM = 8,
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PIXEL = 9,
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PWM = 10,
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HEVC = 11,
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EMMC2 = 12,
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M2MC = 13,
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PIXEL_BVB = 14,
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};
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static u32 set_clock_rate(ClockID, u32 rate_hz, bool skip_setting_turbo = true);
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private:
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enum class TimerID : u32 {
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Timer0 = 0,
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Timer1 = 1,
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Timer2 = 2,
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Timer3 = 3,
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};
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void set_compare(TimerID, u32 compare);
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void clear_interrupt(TimerID);
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//^ IRQHandler
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virtual bool handle_irq(RegisterState const&) override;
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TimerRegisters volatile* m_registers;
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u32 m_interrupt_interval { 0 };
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u32 m_current_timer_value { 0 };
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};
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}
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