drm/mcde: Add new driver for ST-Ericsson MCDE

This adds a new DRM driver for the ST-Ericsson Multi Channel Display Engine, MCDE display controller. This hardware has three independent DSI hosts and can composit and display several memory buffers onto an LCD display. It was developed for several years inside of ST-Ericsson and shipped with a few million mobile phones from Sony and Samsung, as well as with the Snowball community development board. The driver is currently pretty rudimentary but supports a simple framebuffer so we can get penguins and graphics when using these SoCs. Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190524092019.19355-1-linus.walleij@linaro.org
xanmod · May 24, 2019 · 5fc537b · 5fc537b
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diff --git a/Documentation/gpu/drivers.rst b/Documentation/gpu/drivers.rst
@@ -7,6 +7,7 @@ GPU Driver Documentation
    amdgpu
    amdgpu-dc
    i915
+   mcde
    meson
    pl111
    tegra

diff --git a/Documentation/gpu/mcde.rst b/Documentation/gpu/mcde.rst
@@ -0,0 +1,8 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=======================================================
+ drm/mcde ST-Ericsson MCDE Multi-channel display engine
+=======================================================
+
+.. kernel-doc:: drivers/gpu/drm/mcde/mcde_drv.c
+   :doc: ST-Ericsson MCDE DRM Driver
diff --git a/MAINTAINERS b/MAINTAINERS
@@ -5128,6 +5128,13 @@ S:	Maintained
 F:	drivers/gpu/drm/tinydrm/st7735r.c
 F:	Documentation/devicetree/bindings/display/sitronix,st7735r.txt
 
+DRM DRIVER FOR ST-ERICSSON MCDE
+M:	Linus Walleij <linus.walleij@linaro.org>
+T:	git git://anongit.freedesktop.org/drm/drm-misc
+S:	Maintained
+F:	drivers/gpu/drm/mcde/
+F:	Documentation/devicetree/bindings/display/ste,mcde.txt
+
 DRM DRIVER FOR TDFX VIDEO CARDS
 S:	Orphan / Obsolete
 F:	drivers/gpu/drm/tdfx/

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
@@ -349,6 +349,8 @@ source "drivers/gpu/drm/panfrost/Kconfig"
 
 source "drivers/gpu/drm/aspeed/Kconfig"
 
+source "drivers/gpu/drm/mcde/Kconfig"
+
 # Keep legacy drivers last
 
 menuconfig DRM_LEGACY

diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
@@ -118,3 +118,4 @@ obj-$(CONFIG_DRM_VBOXVIDEO) += vboxvideo/
 obj-$(CONFIG_DRM_LIMA)  += lima/
 obj-$(CONFIG_DRM_PANFROST) += panfrost/
 obj-$(CONFIG_DRM_ASPEED_GFX) += aspeed/
+obj-$(CONFIG_DRM_MCDE) += mcde/
diff --git a/drivers/gpu/drm/mcde/Kconfig b/drivers/gpu/drm/mcde/Kconfig
@@ -0,0 +1,18 @@
+config DRM_MCDE
+	tristate "DRM Support for ST-Ericsson MCDE (Multichannel Display Engine)"
+	depends on DRM
+	depends on CMA
+	depends on ARM || COMPILE_TEST
+	depends on OF
+	select MFD_SYSCON
+	select DRM_MIPI_DSI
+	select DRM_BRIDGE
+	select DRM_PANEL_BRIDGE
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_GEM_CMA_HELPER
+	select VT_HW_CONSOLE_BINDING if FRAMEBUFFER_CONSOLE
+	help
+	  Choose this option for DRM support for the ST-Ericsson MCDE
+	  Multi-Channel Display Engine.
+	  If M is selected the module will be called mcde_drm.
diff --git a/drivers/gpu/drm/mcde/Makefile b/drivers/gpu/drm/mcde/Makefile
@@ -0,0 +1,3 @@
+mcde_drm-y +=	mcde_drv.o mcde_dsi.o mcde_display.o
+
+obj-$(CONFIG_DRM_MCDE) += mcde_drm.o