447da4a11f
Users of the DmaHeap class really just want some way to allocate
dma-buffers from userspace. This can also be done by using /dev/udmabuf
instead of using /dev/dma_heap/*.
Rename DmaHeap class to DmaBufAllocator in preparation of adding
/dev/udmabuf support.
And update the DmaHeap class docs to match including replacing references
to "dma-heap type" with "dma-buf provider".
This is a pure automated rename on the code ('s/DmaHeap/DmaBufAllocator/')
+ file renames + doc updates. There are no functional changes.
The DmaBufAllocator objects in vc4.cpp and software_isp.cpp are left named
dmaHeap_ to keep the changes to those 2 files to a minimum.
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # Lenovo-x13s
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
39 lines
797 B
C++
39 lines
797 B
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2020, Raspberry Pi Ltd
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*
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* Helper class for dma-buf allocations.
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*/
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#pragma once
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#include <stddef.h>
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#include <libcamera/base/flags.h>
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#include <libcamera/base/unique_fd.h>
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namespace libcamera {
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class DmaBufAllocator
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{
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public:
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enum class DmaBufAllocatorFlag {
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CmaHeap = 1 << 0,
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SystemHeap = 1 << 1,
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};
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using DmaBufAllocatorFlags = Flags<DmaBufAllocatorFlag>;
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DmaBufAllocator(DmaBufAllocatorFlags flags = DmaBufAllocatorFlag::CmaHeap);
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~DmaBufAllocator();
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bool isValid() const { return providerHandle_.isValid(); }
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UniqueFD alloc(const char *name, std::size_t size);
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private:
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UniqueFD providerHandle_;
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};
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LIBCAMERA_FLAGS_ENABLE_OPERATORS(DmaBufAllocator::DmaBufAllocatorFlag)
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} /* namespace libcamera */
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