87ee158ec8
Add an argument to the constructor to specify dma heaps type(s) to use. Can be DmaHeapFlag::Cma and/or DmaHeapFlag::System. By default DmaHeapFlag::Cma is used. If both DmaHeapFlag::Cma and DmaHeapFlag::System are set, CMA heap is tried first. Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # sc8280xp Lenovo x13s Tested-by: Pavel Machek <pavel@ucw.cz> Reviewed-by: Milan Zamazal <mzamazal@redhat.com> Reviewed-by: Pavel Machek <pavel@ucw.cz> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
39 lines
718 B
C++
39 lines
718 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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* dma_heaps.h - Helper class for dma-heap 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 DmaHeap
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{
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public:
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enum class DmaHeapFlag {
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Cma = 1 << 0,
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System = 1 << 1,
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};
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using DmaHeapFlags = Flags<DmaHeapFlag>;
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DmaHeap(DmaHeapFlags flags = DmaHeapFlag::Cma);
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~DmaHeap();
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bool isValid() const { return dmaHeapHandle_.isValid(); }
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UniqueFD alloc(const char *name, std::size_t size);
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private:
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UniqueFD dmaHeapHandle_;
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};
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LIBCAMERA_FLAGS_ENABLE_OPERATORS(DmaHeap::DmaHeapFlag)
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} /* namespace libcamera */
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