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Subject[PATCH v6 07/13] drm/sun4i: add a Kconfig option for sun4i-backend
Date
As sun4i-backend is now a dedicated module, add an Kconfig option for
it to make it optional, since some build may only use other engines.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
---
Splited out patch.

drivers/gpu/drm/sun4i/Kconfig | 10 ++++++++++
drivers/gpu/drm/sun4i/Makefile | 2 +-
2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/sun4i/Kconfig b/drivers/gpu/drm/sun4i/Kconfig
index a4b357db8856..5a8227f37cc4 100644
--- a/drivers/gpu/drm/sun4i/Kconfig
+++ b/drivers/gpu/drm/sun4i/Kconfig
@@ -12,3 +12,13 @@ config DRM_SUN4I
Choose this option if you have an Allwinner SoC with a
Display Engine. If M is selected the module will be called
sun4i-drm.
+
+config DRM_SUN4I_BACKEND
+ tristate "Support for Allwinner A10 Display Engine Backend"
+ depends on DRM_SUN4I
+ 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.
diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile
index a251fb36c951..a08df56759e3 100644
--- a/drivers/gpu/drm/sun4i/Makefile
+++ b/drivers/gpu/drm/sun4i/Makefile
@@ -9,6 +9,6 @@ sun4i-tcon-y += sun4i_crtc.o
sun4i-backend-y += sun4i_backend.o sun4i_layer.o

obj-$(CONFIG_DRM_SUN4I) += sun4i-drm.o sun4i-tcon.o
-obj-$(CONFIG_DRM_SUN4I) += sun4i-backend.o
+obj-$(CONFIG_DRM_SUN4I_BACKEND) += sun4i-backend.o
obj-$(CONFIG_DRM_SUN4I) += sun6i_drc.o
obj-$(CONFIG_DRM_SUN4I) += sun4i_tv.o
--
2.12.2
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