When CONFIG_DRM_RCAR_DU=y and CONFIG_DRM_RCAR_MIPI_DSI=m, calls
from the builtin driver to the mipi driver fail due to linker
errors.
Since the RCAR_MIPI_DSI driver is not always required, fix the
build error by making DRM_RCAR_DU optionally depend on the
RCAR_MIPI_DSI Kconfig symbol. This prevents the problematic
kconfig combination without requiring that RCAR_MIPI_DSI always
be enabled.
aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function
`rcar_du_crtc_atomic_enable':
rcar_du_crtc.c:(.text+0x3a18): undefined reference to
`rcar_mipi_dsi_pclk_enable'
aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function
`rcar_du_crtc_atomic_disable':
rcar_du_crtc.c:(.text+0x47cc): undefined reference to
`rcar_mipi_dsi_pclk_disable'
Fixes: 957fe62d7d15 ("drm: rcar-du: Fix DSI enable & disable sequence")
Signed-off-by: Randy Dunlap <rdun...@infradead.org>
Cc: Tomi Valkeinen <tomi.valkeinen+rene...@ideasonboard.com>
Cc: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
Cc: Kieran Bingham <kieran.bingham+rene...@ideasonboard.com>
Cc: LUU HOAI <hoai.luu...@renesas.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-renesas-...@vger.kernel.org
Cc: David Airlie <airl...@gmail.com>
Cc: Daniel Vetter <dan...@ffwll.ch>
---
drivers/gpu/drm/rcar-du/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff -- a/drivers/gpu/drm/rcar-du/Kconfig b/drivers/gpu/drm/rcar-du/Kconfig
--- a/drivers/gpu/drm/rcar-du/Kconfig
+++ b/drivers/gpu/drm/rcar-du/Kconfig
@@ -4,6 +4,7 @@ config DRM_RCAR_DU
depends on DRM && OF
depends on ARM || ARM64
depends on ARCH_RENESAS || COMPILE_TEST
+ depends on DRM_RCAR_MIPI_DSI || DRM_RCAR_MIPI_DSI=n
select DRM_KMS_HELPER
select DRM_GEM_DMA_HELPER
select VIDEOMODE_HELPERS
