@@ -1,19 +1,20 @@
# SPDX-License-Identifier: MIT
+config DRM_DISPLAY_DP_AUX_BUS
+ tristate
+ depends on DRM
+ depends on OF || COMPILE_TEST
+
config DRM_DISPLAY_HELPER
tristate
depends on DRM
help
DRM helpers for display adapters.
-config DRM_DISPLAY_DP_AUX_BUS
- tristate
- depends on DRM
- depends on OF || COMPILE_TEST
+if DRM_DISPLAY_HELPER
config DRM_DISPLAY_DP_AUX_CEC
bool "Enable DisplayPort CEC-Tunneling-over-AUX HDMI support"
- depends on DRM && DRM_DISPLAY_HELPER
select DRM_DISPLAY_DP_HELPER
select CEC_CORE
help
@@ -25,7 +26,6 @@ config DRM_DISPLAY_DP_AUX_CEC
config DRM_DISPLAY_DP_AUX_CHARDEV
bool "DRM DP AUX Interface"
- depends on DRM && DRM_DISPLAY_HELPER
select DRM_DISPLAY_DP_HELPER
help
Choose this option to enable a /dev/drm_dp_auxN node that allows to
@@ -34,7 +34,6 @@ config DRM_DISPLAY_DP_AUX_CHARDEV
config DRM_DISPLAY_DP_HELPER
bool
- depends on DRM_DISPLAY_HELPER
help
DRM display helpers for DisplayPort.
@@ -61,25 +60,23 @@ config DRM_DISPLAY_DP_TUNNEL_STATE_DEBUG
config DRM_DISPLAY_DSC_HELPER
bool
- depends on DRM_DISPLAY_HELPER
help
DRM display helpers for VESA DSC (used by DSI and DisplayPort).
config DRM_DISPLAY_HDCP_HELPER
bool
- depends on DRM_DISPLAY_HELPER
help
DRM display helpers for HDCP.
config DRM_DISPLAY_HDMI_HELPER
bool
- depends on DRM_DISPLAY_HELPER
help
DRM display helpers for HDMI.
config DRM_DISPLAY_HDMI_STATE_HELPER
bool
- depends on DRM_DISPLAY_HELPER
select DRM_DISPLAY_HDMI_HELPER
help
DRM KMS state helpers for HDMI.
+
+endif # DRM_DISPLAY_HELPER
Kconfig symbols should not declare dependency on DRM_DISPLAY_HELPER. Move all parts of DRM_DISPLAY_HELPER to an if DRM_DISPLAY_HELPER block. It is not possible to make those symbols select DRM_DISPLAY_HELPER because of the link issues when a part of the helper is selected to be built-in, while other part is selected to be as module. In such a case the modular part doesn't get built at all, leading to undefined symbols. The only viable alternative is to split drm_display_helper.ko into several small modules, each of them having their own dependencies. Suggested-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/gpu/drm/display/Kconfig | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-)