kernel: modules: package driver for generic MIPI DBI TFT panels

Package kmod-drm-panel-mipi-dbi as well as modules it depends on in
order to support a wide range of MIPI DBI complaint SPI-connected
TFT panels.

See https://github.com/notro/panel-mipi-dbi/ for more information on
how to use specific panels.

Signed-off-by: Daniel Golle <[email protected]>
(cherry picked from commit 0a7b7ef27cfc00521a0f99de073a7168f1b79e8f)

package/kernel/linux/modules/video.mk

@@ -311,6 +311,38 @@ endef
 
 $(eval $(call KernelPackage,drm-exec))
 
+define KernelPackage/drm-dma-helper
+  SUBMENU:=$(VIDEO_MENU)
+  HIDDEN:=1
+  TITLE:=GEM DMA helper functions
+  DEPENDS:=@DISPLAY_SUPPORT +kmod-drm-kms-helper
+  KCONFIG:=CONFIG_DRM_GEM_DMA_HELPER
+  FILES:=$(LINUX_DIR)/drivers/gpu/drm/drm_dma_helper.ko
+  AUTOLOAD:=$(call AutoProbe,drm_dma_helper)
+endef
+
+define KernelPackage/drm-dma-helper/description
+  GEM DMA helper functions.
+endef
+
+$(eval $(call KernelPackage,drm-dma-helper))
+
+define KernelPackage/drm-mipi-dbi
+  SUBMENU:=$(VIDEO_MENU)
+  HIDDEN:=1
+  TITLE:=MIPI DBI helpers
+  DEPENDS:=@DISPLAY_SUPPORT +kmod-backlight +kmod-drm-kms-helper
+  KCONFIG:=CONFIG_DRM_MIPI_DBI
+  FILES:=$(LINUX_DIR)/drivers/gpu/drm/drm_mipi_dbi.ko
+  AUTOLOAD:=$(call AutoProbe,drm_mipi_dbi)
+endef
+
+define KernelPackage/drm-mipi-dbi/description
+  MIPI Display Bus Interface (DBI) LCD controller support.
+endef
+
+$(eval $(call KernelPackage,drm-mipi-dbi))
+
 define KernelPackage/drm-ttm
   SUBMENU:=$(VIDEO_MENU)
   TITLE:=GPU memory management subsystem
@@ -484,6 +516,24 @@ endef
 
 $(eval $(call KernelPackage,drm-imx-ldb))
 
+define KernelPackage/drm-panel-mipi-dbi
+  SUBMENU:=$(VIDEO_MENU)
+  TITLE:=Generic MIPI DBI LCD panel
+  DEPENDS:=+kmod-drm-mipi-dbi +kmod-drm-dma-helper
+  KCONFIG:=CONFIG_DRM_PANEL_MIPI_DBI \
+	CONFIG_DRM_FBDEV_EMULATION=y \
+	CONFIG_DRM_FBDEV_OVERALLOC=100
+  FILES:= \
+	$(LINUX_DIR)/drivers/gpu/drm/tiny/panel-mipi-dbi.ko
+  AUTOLOAD:=$(call AutoProbe,panel-mipi-dbi)
+endef
+
+define KernelPackage/drm-panel-mipi-dbi/description
+  Generic driver for MIPI Alliance Display Bus Interface
+endef
+
+$(eval $(call KernelPackage,drm-panel-mipi-dbi))
+
 define KernelPackage/drm-radeon
   SUBMENU:=$(VIDEO_MENU)
   TITLE:=Radeon DRM support