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linux-stable/drivers/staging/media/deprecated/atmel/Kconfig

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media: atmel: atmel-isc: move to staging The Atmel ISC driver is not compliant with media controller specification. In order to evolve this driver, it has to move to media controller, to support enhanced features and future products which embed it. The move to media controller involves several changes which are not backwards compatible with the current usability of the driver. The best example is the way the format is propagated from the top video driver /dev/videoX down to the sensor. In a simple configuration sensor ==> isc , the isc just calls subdev s_fmt and controls the sensor directly. This is achieved by having a lot of code inside the driver that will query the subdev at probe time and make a list of formats which are usable. Basically the user has nothing to configure, as the isc will handle everything at the top level. This is an easy way to capture, but also comes with the drawback of lack of flexibility. In a more complicated pipeline sensor ==> controller 1 ==> controller 2 ==> isc this will not be achievable, as controller 1 and controller 2 might be media-controller configurable, and will not propagate the formats down to the sensor. After discussions with the media maintainers, the decision is to move Atmel ISC to staging as-is, to keep the Kconfig symbols and the users to the driver in staging. Thus, all the existing users of the non media-controller paradigm will continue to be happy and use the old config way. The new driver was added in the media subsystem with a different symbol, with the conversion to media controller done, and new users of the driver will be able to use all the new features. This patch is merely a file move to staging, not affecting any of the users. The exported symbols had to be renamed to atmel_* to avoid duplication with the new Microchip ISC driver. Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-11-07 14:18:18 +00:00
# SPDX-License-Identifier: GPL-2.0-only
comment "Atmel media platform drivers"
config VIDEO_ATMEL_ISC
tristate "ATMEL Image Sensor Controller (ISC) support (DEPRECATED)"
depends on V4L_PLATFORM_DRIVERS
depends on VIDEO_DEV && COMMON_CLK
depends on ARCH_AT91 || COMPILE_TEST
depends on !VIDEO_MICROCHIP_ISC_BASE || COMPILE_TEST
select MEDIA_CONTROLLER
select VIDEO_V4L2_SUBDEV_API
select VIDEOBUF2_DMA_CONTIG
select REGMAP_MMIO
select V4L2_FWNODE
select VIDEO_ATMEL_ISC_BASE
help
This module makes the ATMEL Image Sensor Controller available
as a v4l2 device.
This driver is deprecated and is scheduled for removal by
the beginning of 2026. See the TODO file for more information.
config VIDEO_ATMEL_XISC
tristate "ATMEL eXtended Image Sensor Controller (XISC) support (DEPRECATED)"
depends on V4L_PLATFORM_DRIVERS
depends on VIDEO_DEV && COMMON_CLK
depends on ARCH_AT91 || COMPILE_TEST
depends on !VIDEO_MICROCHIP_ISC_BASE || COMPILE_TEST
select VIDEOBUF2_DMA_CONTIG
select REGMAP_MMIO
select V4L2_FWNODE
select VIDEO_ATMEL_ISC_BASE
select MEDIA_CONTROLLER
select VIDEO_V4L2_SUBDEV_API
help
This module makes the ATMEL eXtended Image Sensor Controller
available as a v4l2 device.
This driver is deprecated and is scheduled for removal by
the beginning of 2026. See the TODO file for more information.
config VIDEO_ATMEL_ISC_BASE
tristate
default n
help
ATMEL ISC and XISC common code base.