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Kernel: Add ioctl to get the EDID from a framebuffer

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This commit is contained in:
Tom 2021-12-31 22:02:55 -07:00 • committed by Linus Groh
parent 8184870f93
commit 03c45b1865
20 changed files with 265 additions and 84 deletions
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11
Kernel/Graphics/Bochs/GraphicsAdapter.cpp
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@ -276,4 +276,15 @@ void BochsGraphicsAdapter::disable_consoles()
m_framebuffer_device->activate_writes();
}
ErrorOr<ByteBuffer> BochsGraphicsAdapter::get_edid(size_t output_port_index) const
{
if (output_port_index != 0)
return Error::from_errno(ENODEV);
auto bytes = ByteBuffer::copy(const_cast<u8 const*>(m_registers->edid_data), sizeof(m_registers->edid_data));
if (!bytes.has_value())
return Error::from_errno(ENOMEM);
return bytes.release_value();
}
}

2
Kernel/Graphics/Bochs/GraphicsAdapter.h
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@ -36,6 +36,8 @@ public:
virtual bool vga_compatible() const override;
ErrorOr<ByteBuffer> get_edid(size_t output_port_index) const override;
private:
// ^GenericGraphicsAdapter
virtual bool try_to_set_resolution(size_t output_port_index, size_t width, size_t height) override;