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Kernel: Implement HD audio driver

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This is very basic and does not support a lot of stuff (like changing
the output pin :D)
This commit is contained in:
Bananymous
2026-01-06 15:48:49 +02:00
parent e926beba5a
commit da6794c8ce
12 changed files with 1250 additions and 12 deletions
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21
kernel/kernel/Audio/Controller.cpp
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@@ -1,5 +1,6 @@
#include <kernel/Audio/AC97/Controller.h>
#include <kernel/Audio/Controller.h>
#include <kernel/Audio/HDAudio/Controller.h>
#include <kernel/Device/DeviceNumbers.h>
#include <kernel/FS/DevFS/FileSystem.h>
#include <kernel/Lock/SpinLockAsMutex.h>
@@ -20,23 +21,26 @@ namespace Kernel
BAN::Formatter::print([&ptr](char c) { *ptr++ = c; }, "audio{}", minor(m_rdev));
}
BAN::ErrorOr<BAN::RefPtr<AudioController>> AudioController::create(PCI::Device& pci_device)
BAN::ErrorOr<void> AudioController::create(PCI::Device& pci_device)
{
switch (pci_device.subclass())
{
case 0x01:
// We should confirm that the card is actually AC97 but I'm trusting osdev wiki on this one
// > you can probably expect that every sound card with subclass 0x01 is sound card compatibile with AC97
if (auto ret = AC97AudioController::create(pci_device); !ret.is_error())
{
DevFileSystem::get().add_device(ret.value());
return BAN::RefPtr<AudioController>(ret.release_value());
}
else
if (auto ret = AC97AudioController::create(pci_device); ret.is_error())
{
dwarnln("Failed to initialize AC97: {}", ret.error());
return ret.release_error();
}
break;
case 0x03:
if (auto ret = HDAudioController::create(pci_device); ret.is_error())
{
dwarnln("Failed to initialize Intel HDA: {}", ret.error());
return ret.release_error();
}
break;
default:
dprintln("Unsupported Sound card (PCI {2H}:{2H}:{2H})",
pci_device.class_code(),
@@ -45,8 +49,9 @@ namespace Kernel
);
return BAN::Error::from_errno(ENOTSUP);
}
}
return {};
}
BAN::ErrorOr<size_t> AudioController::write_impl(off_t, BAN::ConstByteSpan buffer)
{