Hi Jackie,
On 28/07/2021 09:42, Jackie Liu wrote:
> From: Jackie Liu <liuyun01@xxxxxxxxxx>
>
> After the patch 78b6bb1d24db ("drm: rcar-du: crtc: Control CMM operations"),
> the cmm module must be included in the crtc. We cannot remove this
> configuration option separately. Therefore, simply linking them together
> is the best solution, otherwise some errors will be reported.
>
Yikes, I'm sure we've had plenty of problems with the config options on
this module. The churn alone makes me wonder if it should just be part
of the overall module to simplify things... but...
> rcar_du_crtc.c:(.text+0x194): undefined reference to `rcar_cmm_setup'
> rcar_du_crtc.c:(.text+0x11bc): undefined reference to `rcar_cmm_enable'
> rcar_du_crtc.c:(.text+0x1604): undefined reference to `rcar_cmm_disable'
> rcar_du_kms.c:(.text+0x768): undefined reference to `rcar_cmm_init'
Those are guarded by #if IS_ENABLED in the header.
So from that - perhaps we can assume that the config attempted here was
a built-in DU - but a module CMM which wouldn't be supported?
> Fixes: 78b6bb1d24db ("rm: rcar-du: crtc: Control CMM operations")
That fixes tag is missing a 'd', but that's trivial.
> Reported-by: kernel-bot <k2ci@xxxxxxxxxx>
> Signed-off-by: Jackie Liu <liuyun01@xxxxxxxxxx>
> ---
> drivers/gpu/drm/rcar-du/Kconfig | 8 --------
> drivers/gpu/drm/rcar-du/Makefile | 2 +-
> 2 files changed, 1 insertion(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/rcar-du/Kconfig b/drivers/gpu/drm/rcar-du/Kconfig
> index b47e74421e34..bc71ad2a472f 100644
> --- a/drivers/gpu/drm/rcar-du/Kconfig
> +++ b/drivers/gpu/drm/rcar-du/Kconfig
> @@ -4,7 +4,6 @@ config DRM_RCAR_DU
> depends on DRM && OF
> depends on ARM || ARM64
> depends on ARCH_RENESAS || COMPILE_TEST
> - imply DRM_RCAR_CMM
> imply DRM_RCAR_LVDS
> select DRM_KMS_HELPER
> select DRM_KMS_CMA_HELPER
> @@ -14,13 +13,6 @@ config DRM_RCAR_DU
> Choose this option if you have an R-Car chipset.
> If M is selected the module will be called rcar-du-drm.
>
> -config DRM_RCAR_CMM
> - tristate "R-Car DU Color Management Module (CMM) Support"
> - depends on DRM && OF
> - depends on DRM_RCAR_DU
> - help
> - Enable support for R-Car Color Management Module (CMM).
> -
I suspect the issue lies somewhere in this config that the CMM is not
being enforced to be a built in when the DU is built in ?
> config DRM_RCAR_DW_HDMI
> tristate "R-Car Gen3 and RZ/G2 DU HDMI Encoder Support"
> depends on DRM && OF
> diff --git a/drivers/gpu/drm/rcar-du/Makefile b/drivers/gpu/drm/rcar-du/Makefile
> index 4d1187ccc3e5..76ff2e15bc2d 100644
> --- a/drivers/gpu/drm/rcar-du/Makefile
> +++ b/drivers/gpu/drm/rcar-du/Makefile
> @@ -5,6 +5,7 @@ rcar-du-drm-y := rcar_du_crtc.o \
> rcar_du_group.o \
> rcar_du_kms.o \
> rcar_du_plane.o \
> + rcar_cmm.o
>
> rcar-du-drm-$(CONFIG_DRM_RCAR_LVDS) += rcar_du_of.o \
> rcar_du_of_lvds_r8a7790.dtb.o \
> @@ -15,7 +16,6 @@ rcar-du-drm-$(CONFIG_DRM_RCAR_LVDS) += rcar_du_of.o \
> rcar-du-drm-$(CONFIG_DRM_RCAR_VSP) += rcar_du_vsp.o
> rcar-du-drm-$(CONFIG_DRM_RCAR_WRITEBACK) += rcar_du_writeback.o
>
> -obj-$(CONFIG_DRM_RCAR_CMM) += rcar_cmm.o
> obj-$(CONFIG_DRM_RCAR_DU) += rcar-du-drm.o
> obj-$(CONFIG_DRM_RCAR_DW_HDMI) += rcar_dw_hdmi.o
> obj-$(CONFIG_DRM_RCAR_LVDS) += rcar_lvds.o
>
