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media Kconfig has two entries associated to V4L API: VIDEO_DEV and VIDEO_V4L2. On Kernel 2.6.x, there were two V4L APIs, each one with its own flag. VIDEO_DEV were meant to: 1) enable Video4Linux and make its Kconfig options to appear; 2) it makes the Kernel build the V4L core. while VIDEO_V4L2 where used to distinguish between drivers that implement the newer API and drivers that implemented the former one. With time, such meaning changed, specially after the removal of all V4L version 1 drivers. At the current implementation, VIDEO_DEV only does (1): it enables the media options related to V4L, that now has: menu "Video4Linux options" visible if VIDEO_DEV source "drivers/media/v4l2-core/Kconfig" endmenu but it doesn't affect anymore the V4L core drivers. The rationale is that the V4L2 core has a "soft" dependency at the I2C bus, and now requires to select a number of other Kconfig options: config VIDEO_V4L2 tristate depends on (I2C || I2C=n) && VIDEO_DEV select RATIONAL select VIDEOBUF2_V4L2 if VIDEOBUF2_CORE default (I2C || I2C=n) && VIDEO_DEV In the past, merging them would be tricky, but it seems that it is now possible to merge those symbols, in order to simplify V4L dependencies. Let's keep VIDEO_DEV, as this one is used on some make *defconfig configurations. Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> # for meson-vdec & meson-ge2d Acked-by: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com> Acked-by: Łukasz Stelmach <l.stelmach@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
43 lines
987 B
Plaintext
43 lines
987 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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menuconfig V4L_TEST_DRIVERS
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bool "V4L test drivers"
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depends on VIDEO_DEV
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if V4L_TEST_DRIVERS
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source "drivers/media/test-drivers/vimc/Kconfig"
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source "drivers/media/test-drivers/vivid/Kconfig"
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config VIDEO_VIM2M
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tristate "Virtual Memory-to-Memory Driver"
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depends on VIDEO_DEV
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select VIDEOBUF2_VMALLOC
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select V4L2_MEM2MEM_DEV
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select MEDIA_CONTROLLER
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select MEDIA_CONTROLLER_REQUEST_API
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help
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This is a virtual test device for the memory-to-memory driver
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framework.
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source "drivers/media/test-drivers/vicodec/Kconfig"
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endif #V4L_TEST_DRIVERS
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menuconfig DVB_TEST_DRIVERS
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bool "DVB test drivers"
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depends on DVB_CORE && MEDIA_SUPPORT && I2C
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help
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Enables DVB test drivers.
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This enables the DVB test drivers. They are meant as an aid for
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DVB device driver writers and developers working on userspace
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media applications.
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if DVB_TEST_DRIVERS
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source "drivers/media/test-drivers/vidtv/Kconfig"
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endif #DVB_TEST_DRIVERS
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