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Add a V4L2 mem-to-mem driver for the Vivante DW100 Dewarp Processor IP core found on i.MX8MP SoC. The processor core applies a programmable geometrical transformation on input images to correct distorsion introduced by lenses. The transformation function is exposed as a grid map with 16x16 pixel macroblocks indexed using X, Y vertex coordinates. The dewarping map can be set from application through a dedicated v4l2 control. If not set or invalid, the driver computes an identity map prior to starting the processing engine. The driver supports scaling, cropping and pixel format conversion. Signed-off-by: Xavier Roumegue <xavier.roumegue@oss.nxp.com> Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
17 lines
497 B
Plaintext
17 lines
497 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config VIDEO_DW100
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tristate "NXP i.MX DW100 dewarper"
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depends on V4L_MEM2MEM_DRIVERS
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depends on VIDEO_DEV
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depends on ARCH_MXC || COMPILE_TEST
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select MEDIA_CONTROLLER
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select V4L2_MEM2MEM_DEV
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select VIDEOBUF2_DMA_CONTIG
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help
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DW100 is a memory-to-memory engine performing geometrical
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transformation on source images through a programmable dewarping map.
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To compile this driver as a module, choose M here: the module
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will be called dw100.
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