Commit 46c15a4f authored by Marvin Lin's avatar Marvin Lin Committed by Hans Verkuil
Browse files

media: nuvoton: Add driver for NPCM video capture and encoding engine 



Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As described in
the datasheet NPCM750D_DS_Rev_1.0, the VCD can capture frames from
digital video input and compare two frames in memory, and then the ECE
can compress the frame data into HEXTILE format. This driver implements
V4L2 interfaces and provides user controls to support KVM feature, also
tested with VNC Viewer ver.6.22.826 and openbmc/obmc-ikvm.

Signed-off-by: default avatarMarvin Lin <milkfafa@gmail.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
parent 1568583b

MAINTAINERS

+12 −0
Original line number Diff line number Diff line
@@ -2480,6 +2480,18 @@ F: drivers/rtc/rtc-nct3018y.c 
F:	include/dt-bindings/clock/nuvoton,npcm7xx-clock.h

F:	include/dt-bindings/clock/nuvoton,npcm845-clk.h









ARM/NUVOTON NPCM VIDEO ENGINE DRIVER









M:	Joseph Liu <kwliu@nuvoton.com>









M:	Marvin Lin <kflin@nuvoton.com>









L:	linux-media@vger.kernel.org









L:	openbmc@lists.ozlabs.org (moderated for non-subscribers)









S:	Maintained









F:	Documentation/devicetree/bindings/media/nuvoton,npcm-ece.yaml









F:	Documentation/devicetree/bindings/media/nuvoton,npcm-vcd.yaml









F:	Documentation/userspace-api/media/drivers/npcm-video.rst









F:	drivers/media/platform/nuvoton/









F:	include/uapi/linux/npcm-video.h

















ARM/NUVOTON WPCM450 ARCHITECTURE









M:	Jonathan Neuschäfer <j.neuschaefer@gmx.net>









L:	openbmc@lists.ozlabs.org (moderated for non-subscribers)
































drivers/media/platform/Kconfig



+1
−0






























Original line number
Diff line number
Diff line







@@ -73,6 +73,7 @@ source "drivers/media/platform/intel/Kconfig"







source "drivers/media/platform/marvell/Kconfig"









source "drivers/media/platform/mediatek/Kconfig"









source "drivers/media/platform/microchip/Kconfig"









source "drivers/media/platform/nuvoton/Kconfig"









source "drivers/media/platform/nvidia/Kconfig"









source "drivers/media/platform/nxp/Kconfig"









source "drivers/media/platform/qcom/Kconfig"
































drivers/media/platform/Makefile



+1
−0






























Original line number
Diff line number
Diff line







@@ -16,6 +16,7 @@ obj-y += intel/







obj-y += marvell/









obj-y += mediatek/









obj-y += microchip/









obj-y += nuvoton/









obj-y += nvidia/









obj-y += nxp/









obj-y += qcom/
































drivers/media/platform/nuvoton/Kconfig
0 → 100644



+15
−0






























Original line number
Diff line number
Diff line









# SPDX-License-Identifier: GPL-2.0-only



















comment "Nuvoton media platform drivers"



















config VIDEO_NPCM_VCD_ECE









	tristate "Nuvoton NPCM Video Capture/Encode Engine driver"









	depends on V4L_PLATFORM_DRIVERS









	depends on VIDEO_DEV









	select VIDEOBUF2_DMA_CONTIG









	help









	  Support for the Video Capture/Differentiation Engine (VCD) and









	  Encoding Compression Engine (ECE) present on Nuvoton NPCM SoCs.









	  The VCD can capture a frame from digital video input and compare









	  two frames in memory, and then the ECE can compress the frame









	  data into HEXTILE format.
























drivers/media/platform/nuvoton/Makefile
0 → 100644



+2
−0






























Original line number
Diff line number
Diff line









# SPDX-License-Identifier: GPL-2.0-only









obj-$(CONFIG_VIDEO_NPCM_VCD_ECE) += npcm-video.o