drm/fbdev: Select fbdev I/O helpers from modules that require them

Fbdev emulation for SHMEM and TTM requires helpers from the fbdev
subsystem. Select them from the modules that use them instead of the
core DRM module.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241014085740.582287-5-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 1710e04e3986f9f7cddf0d7581906adeee8850e5..d4f33a9247874c2cfc0b6c30f8200947afc1abb7 100644 (file)
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -11,7 +11,6 @@ menuconfig DRM
        select DRM_PANEL_ORIENTATION_QUIRKS
        select DRM_KMS_HELPER if DRM_FBDEV_EMULATION
        select FB_CORE if DRM_FBDEV_EMULATION
-       select FB_SYSMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
        select HDMI
        select I2C
        select DMA_SHARED_BUFFER
@@ -333,6 +332,7 @@ config DRM_TTM_HELPER
        tristate
        depends on DRM
        select DRM_TTM
+       select FB_SYSMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
        help
          Helpers for ttm-based gem objects
 
@@ -346,6 +346,7 @@ config DRM_GEM_DMA_HELPER
 config DRM_GEM_SHMEM_HELPER
        tristate
        depends on DRM && MMU
+       select FB_SYSMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
        help
          Choose this if you need the GEM shmem helper functions