media: sun4i: Add H3 deinterlace driver (a4260ea4) · Commits · 戴 / test

Allwinner H3 SoC contains deinterlace unit, which has several modes of operation - bypass, weave, bob and mixed (advanced) mode. I don't know how mixed mode works, but according to Allwinner it gives best results, so they use it exclusively. Currently this mode is also hardcoded here. For each interleaved frame queued, this driver produces 2 deinterlaced frames. Deinterlaced frames are based on 2 consequtive output buffers, except for the first 2, where same output buffer is given to peripheral as current and previous. There is no documentation for this core, so register layout and fixed values were taken from BSP driver. I'm not sure if maximum size of the image unit is capable to process is governed by size of "flag" buffers, frequency or it really is some HW limitation. Currently driver can process full HD image in ~15ms (7.5ms for each capture buffer), which allows to process 1920x1080@60i video smoothly in real time. Acked-by:

Maxime Ripard <mripard@kernel.org> Signed-off-by:

Jernej Skrabec <jernej.skrabec@siol.net> [hverkuil-cisco@xs4all.nl: add static to deinterlace_ioctl_ops] Signed-off-by:

Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:

Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

MAINTAINERS

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Original line number	Diff line number	Diff line
		@@ -4641,6 +4641,14 @@ M: "Maciej W. Rozycki" <macro@linux-mips.org>
		S: Maintained
		F: drivers/net/fddi/defxx.*

		DEINTERLACE DRIVERS FOR ALLWINNER H3
		M: Jernej Skrabec <jernej.skrabec@siol.net>
		L: linux-media@vger.kernel.org
		T: git git://linuxtv.org/media_tree.git
		S: Maintained
		F: drivers/media/platform/sunxi/sun8i-di/
		F: Documentation/devicetree/bindings/media/allwinner,sun8i-h3-deinterlace.yaml

		DELL SMBIOS DRIVER
		M: Pali Rohár <pali.rohar@gmail.com>
		M: Mario Limonciello <mario.limonciello@dell.com>

drivers/media/platform/Kconfig

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Original line number	Diff line number	Diff line
		@@ -494,6 +494,19 @@ config VIDEO_QCOM_VENUS
		on various Qualcomm SoCs.
		To compile this driver as a module choose m here.

		config VIDEO_SUN8I_DEINTERLACE
		tristate "Allwinner Deinterlace driver"
		depends on VIDEO_DEV && VIDEO_V4L2
		depends on ARCH_SUNXI \|\| COMPILE_TEST
		depends on COMMON_CLK && OF
		depends on PM
		select VIDEOBUF2_DMA_CONTIG
		select V4L2_MEM2MEM_DEV
		help
		Support for the Allwinner deinterlace unit with scaling
		capability found on some SoCs, like H3.
		To compile this driver as a module choose m here.

		endif # V4L_MEM2MEM_DRIVERS

		# TI VIDEO PORT Helper Modules

drivers/media/platform/sunxi/Makefile

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Original line number	Diff line number	Diff line
		obj-y += sun4i-csi/
		obj-y += sun6i-csi/
		obj-y += sun8i-di/

drivers/media/platform/sunxi/sun8i-di/Makefile

0 → 100644

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		# SPDX-License-Identifier: GPL-2.0
		obj-$(CONFIG_VIDEO_SUN8I_DEINTERLACE) += sun8i-di.o

drivers/media/platform/sunxi/sun8i-di/sun8i-di.c

0 → 100644

+1028 −0

File added.

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