media: nuvoton: VIDEO_NPCM_VCD_ECE should depend on ARCH_NPCM

The Nuvoton NPCM Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) are only present on Nuvoton NPCM SoCs.

media: nuvoton: VIDEO_NPCM_VCD_ECE should depend on ARCH_NPCM

The Nuvoton NPCM Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) are only present on Nuvoton NPCM SoCs. Hence
add a dependency on ARCH_NPCM, to prevent asking the user about these
drivers when configuring a kernel without Nuvoton NPCM Architecture
support.

OpenBMC-Staging-Count: 1
Fixes: 46c15a4ff1f4 ("media: nuvoton: Add driver for NPCM video capture and encoding engine")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
(cherry picked from commit 3e238417254bfdcc23fe207780b59cbb08656762)
Signed-off-by: Joel Stanley <joel@jms.id.au>

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media: nuvoton: npcm-video: Fix IS_ERR() vs NULL bug

The of_parse_phandle() function returns NULL on error. It never returns
error pointers. Update the check accordingly.

OpenBMC-Staging-Count: 1

media: nuvoton: npcm-video: Fix IS_ERR() vs NULL bug

The of_parse_phandle() function returns NULL on error. It never returns
error pointers. Update the check accordingly.

OpenBMC-Staging-Count: 1
Fixes: 70721089985c ("media: nuvoton: Add driver for NPCM video capture and encoding engine")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
(cherry picked from commit 5f9fcbf92da901495f2f8b09d2f6df5c2ca83dc5)
Signed-off-by: Joel Stanley <joel@jms.id.au>

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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

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.

OpenBMC-Staging-Count: 1
Signed-off-by: Marvin Lin <milkfafa@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
(cherry picked from commit 46c15a4ff1f4fe078c5b250fb2570020211eab38)
Signed-off-by: Joel Stanley <joel@jms.id.au>

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