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This patch adds V4L2 HVA (Hardware Video Accelerator) video encoder driver for STMicroelectronics SoC. It uses the V4L2 mem2mem framework. This patch only contains the core parts of the driver: - the V4L2 interface with the userland (hva-v4l2.c) - the hardware services (hva-hw.c) - the memory management utilities (hva-mem.c) This patch doesn't include the support of specific codec (e.g. H.264) video encoding: this support is part of subsequent patches. Signed-off-by: Yannick Fertre <yannick.fertre@st.com> Signed-off-by: Jean-Christophe Trotin <jean-christophe.trotin@st.com> Acked-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
35 lines
741 B
C
35 lines
741 B
C
/*
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* Copyright (C) STMicroelectronics SA 2015
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* Authors: Yannick Fertre <yannick.fertre@st.com>
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* Hugues Fruchet <hugues.fruchet@st.com>
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* License terms: GNU General Public License (GPL), version 2
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*/
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#ifndef HVA_MEM_H
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#define HVA_MEM_H
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/**
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* struct hva_buffer - hva buffer
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*
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* @name: name of requester
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* @paddr: physical address (for hardware)
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* @vaddr: virtual address (kernel can read/write)
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* @size: size of buffer
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*/
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struct hva_buffer {
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const char *name;
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dma_addr_t paddr;
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void *vaddr;
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u32 size;
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};
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int hva_mem_alloc(struct hva_ctx *ctx,
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__u32 size,
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const char *name,
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struct hva_buffer **buf);
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void hva_mem_free(struct hva_ctx *ctx,
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struct hva_buffer *buf);
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#endif /* HVA_MEM_H */
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