linux_dsm_epyc7002/drivers/gpu/drm/sun4i/Kconfig
Arnd Bergmann 58d4d29823
drm/sun4i: fix build failure with CONFIG_DRM_SUN8I_MIXER=m
Having DRM_SUN4I built-in but DRM_SUN8I_MIXER as a loadable module results in
a link error, as we try to access a symbol from the sun8i_tcon_top.ko module:

ERROR: "sun8i_tcon_top_of_table" [drivers/gpu/drm/sun4i/sun8i-drm-hdmi.ko] undefined!
ERROR: "sun8i_tcon_top_of_table" [drivers/gpu/drm/sun4i/sun4i-drm.ko] undefined!

This solves the problem by adding a silent symbol for the tcon_top module,
building it as a separate module in exactly the cases that we need it,
but in a way that it is reachable by the other modules.

Fixes: 57e23de02f ("drm/sun4i: DW HDMI: Expand algorithm for possible crtcs")
Fixes: ef0cf6441f ("drm/sun4i: Add support for traversing graph with TCON TOP")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180711144403.1022829-1-arnd@arndb.de
2018-07-12 09:35:19 +02:00

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config DRM_SUN4I
tristate "DRM Support for Allwinner A10 Display Engine"
depends on DRM && (ARM || ARM64) && COMMON_CLK
depends on ARCH_SUNXI || COMPILE_TEST
select DRM_GEM_CMA_HELPER
select DRM_KMS_HELPER
select DRM_KMS_CMA_HELPER
select DRM_PANEL
select REGMAP_MMIO
select VIDEOMODE_HELPERS
help
Choose this option if you have an Allwinner SoC with a
Display Engine. If M is selected the module will be called
sun4i-drm.
if DRM_SUN4I
config DRM_SUN4I_HDMI
tristate "Allwinner A10 HDMI Controller Support"
default DRM_SUN4I
help
Choose this option if you have an Allwinner SoC with an HDMI
controller.
config DRM_SUN4I_HDMI_CEC
bool "Allwinner A10 HDMI CEC Support"
depends on DRM_SUN4I_HDMI
select CEC_CORE
select CEC_PIN
help
Choose this option if you have an Allwinner SoC with an HDMI
controller and want to use CEC.
config DRM_SUN4I_BACKEND
tristate "Support for Allwinner A10 Display Engine Backend"
default DRM_SUN4I
help
Choose this option if you have an Allwinner SoC with the
original Allwinner Display Engine, which has a backend to
do some alpha blending and feed graphics to TCON. If M is
selected the module will be called sun4i-backend.
config DRM_SUN6I_DSI
tristate "Allwinner A31 MIPI-DSI Controller Support"
default MACH_SUN8I
select CRC_CCITT
select DRM_MIPI_DSI
help
Choose this option if you want have an Allwinner SoC with
MIPI-DSI support. If M is selected the module will be called
sun6i-dsi
config DRM_SUN8I_DW_HDMI
tristate "Support for Allwinner version of DesignWare HDMI"
depends on DRM_SUN4I
select DRM_DW_HDMI
help
Choose this option if you have an Allwinner SoC with the
DesignWare HDMI controller with custom HDMI PHY. If M is
selected the module will be called sun8i_dw_hdmi.
config DRM_SUN8I_MIXER
tristate "Support for Allwinner Display Engine 2.0 Mixer"
default MACH_SUN8I
help
Choose this option if you have an Allwinner SoC with the
Allwinner Display Engine 2.0, which has a mixer to do some
graphics mixture and feed graphics to TCON, If M is
selected the module will be called sun8i-mixer.
config DRM_SUN8I_TCON_TOP
tristate
default DRM_SUN4I if DRM_SUN8I_MIXER!=n
help
TCON TOP is responsible for configuring display pipeline for
HTMI, TVE and LCD.
endif