[PATCH v2] drm: rcar-du: depend on DRM_RCAR_DU for components on that SoC

[Peter Robinson]

There's a few components in the rcar-du drm directory that
don't make sense to be selectable if DRM_RCAR_DU isn't because
they are part of the IP block so add a dependency and add
compile check to ensure they're still tested.

Signed-off-by: Peter Robinson <pbrobinson at gmail.com>
---

v2:
- typo fix in commit message
- s/ARCH_RENESAS/DRM_RCAR_DU

 drivers/gpu/drm/rcar-du/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/rcar-du/Kconfig b/drivers/gpu/drm/rcar-du/Kconfig
index b2bddbeca878..362fb6099e9f 100644
--- a/drivers/gpu/drm/rcar-du/Kconfig
+++ b/drivers/gpu/drm/rcar-du/Kconfig
@@ -25,6 +25,7 @@ config DRM_RCAR_CMM
 config DRM_RCAR_DW_HDMI
 	tristate "R-Car Gen3 and RZ/G2 DU HDMI Encoder Support"
 	depends on DRM && OF
+	depends on DRM_RCAR_DU || COMPILE_TEST
 	select DRM_DW_HDMI
 	help
 	  Enable support for R-Car Gen3 or RZ/G2 internal HDMI encoder.
@@ -32,6 +33,7 @@ config DRM_RCAR_DW_HDMI
 config DRM_RCAR_USE_LVDS
 	bool "R-Car DU LVDS Encoder Support"
 	depends on DRM_BRIDGE && OF
+	depends on DRM_RCAR_DU || COMPILE_TEST
 	default DRM_RCAR_DU
 	help
 	  Enable support for the R-Car Display Unit embedded LVDS encoders.
@@ -45,6 +47,7 @@ config DRM_RCAR_LVDS
 config DRM_RCAR_USE_MIPI_DSI
 	bool "R-Car DU MIPI DSI Encoder Support"
 	depends on DRM_BRIDGE && OF
+	depends on DRM_RCAR_DU || COMPILE_TEST
 	default DRM_RCAR_DU
 	help
 	  Enable support for the R-Car Display Unit embedded MIPI DSI encoders.
-- 
2.39.0