51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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* Author: Rick Chang <rick.chang@mediatek.com>
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*/
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#ifndef _MEDIA_MTK_DMA_CONTIG_H
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#define _MEDIA_MTK_DMA_CONTIG_H
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#include <media/videobuf2-v4l2.h>
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#include <linux/dma-mapping.h>
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#include <media/videobuf2-v4l2.h>
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#include <media/videobuf2-memops.h>
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struct vb2_dc_buf {
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struct device *dev;
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void *vaddr;
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unsigned long size;
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void *cookie;
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dma_addr_t dma_addr;
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unsigned long attrs;
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enum dma_data_direction dma_dir;
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struct sg_table *dma_sgt;
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struct frame_vector *vec;
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/* MMAP related */
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struct vb2_vmarea_handler handler;
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atomic_t refcount;
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struct sg_table *sgt_base;
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/* DMABUF related */
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struct dma_buf_attachment *db_attach;
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};
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static inline dma_addr_t
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mtk_dma_contig_plane_dma_addr(struct vb2_buffer *vb, unsigned int plane_no)
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{
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dma_addr_t *addr = vb2_plane_cookie(vb, plane_no);
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return *addr;
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}
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int mtk_dma_contig_set_max_seg_size(struct device *dev, unsigned int size);
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void mtk_dma_contig_clear_max_seg_size(struct device *dev);
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void mtk_dma_contig_set_secure_mode(struct device *dev, int secure_mode);
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extern const struct vb2_mem_ops mtk_dma_contig_memops;
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#endif
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