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016fedbd20
Instead of doing that on the IntelDisplayPlane class, let's have this in derived classes so these classes can decide how to use the settings that were provided before calling the enable method.
60 lines
2 KiB
C++
60 lines
2 KiB
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Graphics/Intel/Plane/G33DisplayPlane.h>
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#include <Kernel/PhysicalAddress.h>
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namespace Kernel {
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ErrorOr<NonnullOwnPtr<IntelG33DisplayPlane>> IntelG33DisplayPlane::create_with_physical_address(PhysicalAddress plane_registers_start_address)
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{
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auto registers_mapping = TRY(Memory::map_typed<PlaneRegisters volatile>(plane_registers_start_address, sizeof(PlaneRegisters), Memory::Region::Access::ReadWrite));
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return adopt_nonnull_own_or_enomem(new (nothrow) IntelG33DisplayPlane(move(registers_mapping)));
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}
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IntelG33DisplayPlane::IntelG33DisplayPlane(Memory::TypedMapping<PlaneRegisters volatile> registers_mapping)
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: IntelDisplayPlane(move(registers_mapping))
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{
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}
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ErrorOr<void> IntelG33DisplayPlane::enable(Badge<IntelDisplayConnectorGroup>)
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{
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SpinlockLocker locker(m_access_lock);
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VERIFY(((m_horizontal_active_pixels_count * 4) % 64 == 0));
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VERIFY(((m_horizontal_stride) % 64 == 0));
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u32 control_value = 0;
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switch (m_pipe_select) {
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case PipeSelect::PipeA:
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control_value |= (0b00 << 24);
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break;
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case PipeSelect::PipeB:
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control_value |= (0b01 << 24);
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break;
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case PipeSelect::PipeC:
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control_value |= (0b10 << 24);
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break;
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case PipeSelect::PipeD:
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control_value |= (0b11 << 24);
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break;
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}
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// Note: Set the plane to work with 32 bit BGRX (Ignore Alpha channel).
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// Note: Bit 31 is set to turn on the plane.
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control_value |= (0b0110 << 26) | (1 << 31);
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m_plane_registers->stride = m_horizontal_stride;
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m_shadow_registers.stride = m_horizontal_stride;
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m_plane_registers->linear_offset = 0;
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m_shadow_registers.linear_offset = 0;
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m_plane_registers->surface_base = m_aperture_start.get();
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m_shadow_registers.surface_base = m_aperture_start.get();
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m_plane_registers->control = control_value;
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m_shadow_registers.control = control_value;
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return {};
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}
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}
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