c538404869
This patch adds support for DMABUF memory type in videobuf2. It calls relevant APIs of dma_buf for v4l reqbuf / qbuf / dqbuf operations. For this version, the support is for videobuf2 as a user of the shared buffer; so the allocation of the buffer is done outside of V4L2. [A sample allocator of dma-buf shared buffer is given at [1]] [1]: Rob Clark's DRM: https://github.com/robclark/kernel-omap4/commits/drmplane-dmabuf [original work in the PoC for buffer sharing] Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Sumit Semwal <sumit.semwal@ti.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
83 lines
1.6 KiB
Plaintext
83 lines
1.6 KiB
Plaintext
#
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# Generic video config states
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#
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# Enable the V4L2 core and API
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config VIDEO_V4L2
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tristate
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depends on (I2C || I2C=n) && VIDEO_DEV
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default (I2C || I2C=n) && VIDEO_DEV
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config VIDEO_ADV_DEBUG
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bool "Enable advanced debug functionality on V4L2 drivers"
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default n
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---help---
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Say Y here to enable advanced debugging functionality on some
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V4L devices.
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In doubt, say N.
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config VIDEO_FIXED_MINOR_RANGES
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bool "Enable old-style fixed minor ranges on drivers/video devices"
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default n
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---help---
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Say Y here to enable the old-style fixed-range minor assignments.
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Only useful if you rely on the old behavior and use mknod instead of udev.
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When in doubt, say N.
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# Used by drivers that need tuner.ko
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config VIDEO_TUNER
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tristate
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depends on MEDIA_TUNER
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# Used by drivers that need v4l2-mem2mem.ko
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config V4L2_MEM2MEM_DEV
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tristate
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depends on VIDEOBUF2_CORE
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# Used by drivers that need Videobuf modules
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config VIDEOBUF_GEN
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tristate
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config VIDEOBUF_DMA_SG
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tristate
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depends on HAS_DMA
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select VIDEOBUF_GEN
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config VIDEOBUF_VMALLOC
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tristate
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select VIDEOBUF_GEN
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config VIDEOBUF_DMA_CONTIG
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tristate
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depends on HAS_DMA
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select VIDEOBUF_GEN
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config VIDEOBUF_DVB
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tristate
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select VIDEOBUF_GEN
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# Used by drivers that need Videobuf2 modules
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config VIDEOBUF2_CORE
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select DMA_SHARED_BUFFER
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tristate
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config VIDEOBUF2_MEMOPS
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tristate
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config VIDEOBUF2_DMA_CONTIG
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tristate
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select VIDEOBUF2_CORE
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select VIDEOBUF2_MEMOPS
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config VIDEOBUF2_VMALLOC
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tristate
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select VIDEOBUF2_CORE
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select VIDEOBUF2_MEMOPS
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config VIDEOBUF2_DMA_SG
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tristate
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#depends on HAS_DMA
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select VIDEOBUF2_CORE
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select VIDEOBUF2_MEMOPS
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