media: Kconfig: cleanup VIDEO_DEV dependencies

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>

4 files changed, 4 insertions, 4 deletions

diff --git a/drivers/media/test-drivers/Kconfig b/drivers/media/test-drivers/Kconfig
index e27d6602545d..d663d822ec75 100644
--- a/drivers/media/test-drivers/Kconfig
+++ b/drivers/media/test-drivers/Kconfig
@@ -12,7 +12,7 @@ source "drivers/media/test-drivers/vivid/Kconfig"
 
 config VIDEO_VIM2M
 	tristate "Virtual Memory-to-Memory Driver"
-	depends on VIDEO_DEV && VIDEO_V4L2
+	depends on VIDEO_DEV
 	select VIDEOBUF2_VMALLOC
 	select V4L2_MEM2MEM_DEV
 	select MEDIA_CONTROLLER
diff --git a/drivers/media/test-drivers/vicodec/Kconfig b/drivers/media/test-drivers/vicodec/Kconfig
index d77c67810c73..a7a828eec2a4 100644
--- a/drivers/media/test-drivers/vicodec/Kconfig
+++ b/drivers/media/test-drivers/vicodec/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config VIDEO_VICODEC
 	tristate "Virtual Codec Driver"
-	depends on VIDEO_DEV && VIDEO_V4L2
+	depends on VIDEO_DEV
 	select VIDEOBUF2_VMALLOC
 	select V4L2_MEM2MEM_DEV
 	select MEDIA_CONTROLLER
diff --git a/drivers/media/test-drivers/vimc/Kconfig b/drivers/media/test-drivers/vimc/Kconfig
index ea37a102dec8..0d5169819cac 100644
--- a/drivers/media/test-drivers/vimc/Kconfig
+++ b/drivers/media/test-drivers/vimc/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config VIDEO_VIMC
 	tristate "Virtual Media Controller Driver (VIMC)"
-	depends on VIDEO_DEV && VIDEO_V4L2
+	depends on VIDEO_DEV
 	select FONT_SUPPORT
 	select FONT_8x16
 	select MEDIA_CONTROLLER
diff --git a/drivers/media/test-drivers/vivid/Kconfig b/drivers/media/test-drivers/vivid/Kconfig
index c3abde2986b2..318799d317ba 100644
--- a/drivers/media/test-drivers/vivid/Kconfig
+++ b/drivers/media/test-drivers/vivid/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config VIDEO_VIVID
 	tristate "Virtual Video Test Driver"
-	depends on VIDEO_DEV && VIDEO_V4L2 && !SPARC32 && !SPARC64 && FB
+	depends on VIDEO_DEV && !SPARC32 && !SPARC64 && FB
 	depends on HAS_DMA
 	select FONT_SUPPORT
 	select FONT_8x16