There is an option in
config DRM_TTM tristate depends on DRM
This option adds several functions used by DRM GPU drivers to manage videocard memory, so it depends on DRM as we can see.
It is also used by modules.
config DRM_RADEON tristate "ATI Radeon" ... select DRM_TTM
DRM enabled and when I enable one of these modules that
selects it, I see this
CONFIG_DRM_TTM=y is my
So far, so good.
But now I want to enable this option but disable all modules that use it (because I need it for 3rd party module which is not part of kernel source tree), so I enable only
DRM but I do not see this option both in
It seems that I can't enable this option manually, it could only be enabled by other module that
From what I understand, this option must be displayed as
<> because it is
tristate and depends on
DRM, so when I enable
DRM I must see this option. But I do not.
How could it be? Is there any kind of "hidden" or "helper" option on Kconfig that can't be set manually, but only could be set by other options? Where can I read about it (except `mconf.c`` of course, because I assume my problem is too well known to read the source)