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dd7633c5f4
While doing this, we can also just return a normal RefPtr instead of a LockRefPtr, because we create these channels when initializing an audio controller, and never change the pointer in AudioController instances after their initialization, hence no locking is necessary.
85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
/*
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* Copyright (c) 2023, Jelle Raaijmakers <jelle@gmta.nl>
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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/Error.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/RefPtr.h>
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#include <AK/Vector.h>
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#include <Kernel/Bus/PCI/Device.h>
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#include <Kernel/Devices/Audio/Channel.h>
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#include <Kernel/Devices/Audio/Controller.h>
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#include <Kernel/Devices/Audio/IntelHDA/OutputPath.h>
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#include <Kernel/Devices/Audio/IntelHDA/RingBuffer.h>
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#include <Kernel/IOWindow.h>
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namespace Kernel::Audio::IntelHDA {
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// Specification: https://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/high-definition-audio-specification.pdf
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class Codec;
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class Controller final
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: public AudioController
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, public PCI::Device {
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public:
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static ErrorOr<bool> probe(PCI::DeviceIdentifier const&);
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static ErrorOr<NonnullRefPtr<AudioController>> create(PCI::DeviceIdentifier const&);
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virtual ~Controller() = default;
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// ^PCI::Device
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virtual StringView device_name() const override { return "IntelHDA"sv; }
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ErrorOr<u32> send_command(u8 codec_address, u8 node_id, CodecControlVerb verb, u16 payload);
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private:
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static constexpr size_t fixed_audio_channel_index = 0;
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// 3.3: High Definition Audio Controller Register Set
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enum ControllerRegister : u8 {
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GlobalCapabilities = 0x00,
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VersionMinor = 0x02,
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VersionMajor = 0x03,
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GlobalControl = 0x08,
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StateChangeStatus = 0x0e,
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CommandOutboundRingBufferOffset = 0x40,
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ResponseInboundRingBufferOffset = 0x50,
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StreamsOffset = 0x80,
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};
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// 3.3.7: GCTL – Global Control
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enum GlobalControlFlag : u32 {
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ControllerReset = 1u << 0,
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AcceptUnsolicitedResponseEnable = 1u << 8,
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};
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Controller(PCI::DeviceIdentifier const&, NonnullOwnPtr<IOWindow>);
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ErrorOr<void> initialize_codec(u8 codec_address);
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ErrorOr<void> configure_output_route();
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ErrorOr<void> reset();
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// ^AudioController
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virtual RefPtr<AudioChannel> audio_channel(u32 index) const override;
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virtual ErrorOr<size_t> write(size_t channel_index, UserOrKernelBuffer const& data, size_t length) override;
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virtual ErrorOr<void> initialize(Badge<AudioManagement>) override;
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virtual ErrorOr<void> set_pcm_output_sample_rate(size_t channel_index, u32 samples_per_second_rate) override;
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virtual ErrorOr<u32> get_pcm_output_sample_rate(size_t channel_index) override;
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NonnullOwnPtr<IOWindow> m_controller_io_window;
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u8 m_number_of_output_streams;
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u8 m_number_of_input_streams;
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u8 m_number_of_bidirectional_streams;
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OwnPtr<CommandOutboundRingBuffer> m_command_buffer;
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OwnPtr<ResponseInboundRingBuffer> m_response_buffer;
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Vector<NonnullRefPtr<Codec>> m_codecs {};
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OwnPtr<OutputPath> m_output_path;
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RefPtr<AudioChannel> m_audio_channel;
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};
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}
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