media: Kconfig: make filtering devices optional

The per-device option selection is a feature that some
developers love, while others hate...

So, let's make both happy by making it optional.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig
index a57f898..8b070fb 100644 (file)
--- a/drivers/media/Kconfig
+++ b/drivers/media/Kconfig
@@ -25,14 +25,32 @@ menuconfig MEDIA_SUPPORT
          Additional info and docs are available on the web at
          <https://linuxtv.org>
 
-menu "Types of devices to be supported"
+if MEDIA_SUPPORT
+
+config MEDIA_SUPPORT_FILTER
+       bool "Filter devices by their types"
        depends on MEDIA_SUPPORT
+       help
+          Configuring the media subsystem can be complex, as there are
+          hundreds of drivers and other config options.
+
+          This menu offers option that will help the Kernel's config
+          system to hide drivers that are out of the scope of the
+          user needs, and disabling core support for unused APIs.
+
+          If not selected, all non-optional media core functionality
+          needed to support media drivers will be enabled. Also, all
+          media device drivers should be shown.
+
+menu "Media device types"
+       visible if MEDIA_SUPPORT_FILTER
 
 #
 # Multimedia support - automatically enable V4L2 and DVB core
 #
 config MEDIA_CAMERA_SUPPORT
        bool "Cameras and video grabbers"
+       default y if !MEDIA_SUPPORT_FILTER
        help
          Enable support for webcams and video grabbers.
 
@@ -40,6 +58,7 @@ config MEDIA_CAMERA_SUPPORT
 
 config MEDIA_ANALOG_TV_SUPPORT
        bool "Analog TV"
+       default y if !MEDIA_SUPPORT_FILTER
        help
          Enable analog TV support.
 
@@ -47,6 +66,7 @@ config MEDIA_ANALOG_TV_SUPPORT
 
 config MEDIA_DIGITAL_TV_SUPPORT
        bool "Digital TV"
+       default y if !MEDIA_SUPPORT_FILTER
        help
          Enable digital TV support.
 
@@ -54,6 +74,7 @@ config MEDIA_DIGITAL_TV_SUPPORT
 
 config MEDIA_RADIO_SUPPORT
        bool "AM/FM radio receivers/transmitters"
+       default y if !MEDIA_SUPPORT_FILTER
        help
          Enable AM/FM radio support.
 
@@ -64,6 +85,7 @@ config MEDIA_RADIO_SUPPORT
 
 config MEDIA_SDR_SUPPORT
        bool "Software defined radio"
+       default y if !MEDIA_SUPPORT_FILTER
        help
          Enable software defined radio support.
 
@@ -71,6 +93,7 @@ config MEDIA_SDR_SUPPORT
 
 config MEDIA_CEC_SUPPORT
        bool "HDMI CEC"
+       default y if !MEDIA_SUPPORT_FILTER
        help
          Enable support for HDMI CEC (Consumer Electronics Control),
          which is an optional HDMI feature.
@@ -80,6 +103,7 @@ config MEDIA_CEC_SUPPORT
 
 config MEDIA_PLATFORM_SUPPORT
        bool "Platform-specific devices"
+       default y if !MEDIA_SUPPORT_FILTER
        help
          Enable support for complex cameras, codecs, and other hardware
          that are integrated at the CPU, GPU or on Image Signalling Processor
@@ -92,6 +116,7 @@ config MEDIA_PLATFORM_SUPPORT
 
 config MEDIA_TEST_SUPPORT
        bool "Test drivers"
+       default y if !MEDIA_SUPPORT_FILTER
        help
          Those drivers should not be used on production Kernels, but
          can be useful on debug ones. It enables several dummy drivers
@@ -103,9 +128,7 @@ config MEDIA_TEST_SUPPORT
 
          In case of doubts, say N.
          Say Y when you have a software defined radio device.
-endmenu # Types of devices to be supported
-
-if MEDIA_SUPPORT
+endmenu # media device types
 
 comment "Multimedia core features"