Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 109eee2f authored by Jianwei Wang's avatar Jianwei Wang
Browse files

drm/layerscape: Add Freescale DCU DRM driver 



This patch add support for Two Dimensional Animation and Compositing
Engine (2D-ACE) on the Freescale SoCs.

2D-ACE is a Freescale display controller. 2D-ACE describes
the functionality of the module extremely well its name is a value
that cannot be used as a token in programming languages.
Instead the valid token "DCU" is used to tag the register names and
function names.

The Display Controller Unit (DCU) module is a system master that
fetches graphics stored in internal or external memory and displays
them on a TFT LCD panel. A wide range of panel sizes is supported
and the timing of the interface signals is highly configurable.
Graphics are read directly from memory and then blended in real-time,
which allows for dynamic content creation with minimal CPU
intervention.

The features:
(1) Full RGB888 output to TFT LCD panel.
(2) Blending of each pixel using up to 4 source layers
dependent
on size of panel.
(3) Each graphic layer can be placed with one pixel resolution
in either axis.
(4) Each graphic layer support RGB565 and RGB888 direct colors
without alpha channel and BGRA8888 BGRA4444 ARGB1555 direct
colors
with an alpha channel and YUV422 format.
(5) Each graphic layer support alpha blending with 8-bit
resolution.
This is a simplified version, only one primary plane, one
framebuffer, one crtc, one connector and one encoder for TFT
LCD panel.

Signed-off-by: default avatarAlison Wang <b18965@freescale.com>
Signed-off-by: default avatarXiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: default avatarJianwei Wang <jianwei.wang.chn@gmail.com>
Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 294947a5

Documentation/devicetree/bindings/video/fsl,dcu.txt

0 → 100644
+22 −0
Original line number Diff line number Diff line 
Device Tree bindings for Freescale DCU DRM Driver



Required properties:

- compatible:		Should be one of

	* "fsl,ls1021a-dcu".

	* "fsl,vf610-dcu".



- reg:			Address and length of the register set for dcu.

- clocks:		From common clock binding: handle to dcu clock.

- clock-names:		From common clock binding: Shall be "dcu".

- big-endian		Boolean property, LS1021A DCU registers are big-endian.

- fsl,panel:		The phandle to panel node.



Examples:

dcu: dcu@2ce0000 {

	compatible = "fsl,ls1021a-dcu";

	reg = <0x0 0x2ce0000 0x0 0x10000>;

	clocks = <&platform_clk 0>;

	clock-names = "dcu";

	big-endian;

	fsl,panel = <&panel>;

};

drivers/gpu/drm/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -249,6 +249,8 @@ source "drivers/gpu/drm/virtio/Kconfig" 


source "drivers/gpu/drm/msm/Kconfig"



source "drivers/gpu/drm/fsl-dcu/Kconfig"



source "drivers/gpu/drm/tegra/Kconfig"



source "drivers/gpu/drm/panel/Kconfig"

drivers/gpu/drm/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -70,3 +70,4 @@ obj-$(CONFIG_DRM_IMX) += imx/ 
obj-y			+= i2c/

obj-y			+= panel/

obj-y			+= bridge/

obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu/

drivers/gpu/drm/fsl-dcu/Kconfig

0 → 100644
+18 −0
Original line number Diff line number Diff line 
config DRM_FSL_DCU

	tristate "DRM Support for Freescale DCU"

	depends on DRM && OF && ARM

	select BACKLIGHT_CLASS_DEVICE

	select BACKLIGHT_LCD_SUPPORT

	select DRM_KMS_HELPER

	select DRM_KMS_CMA_HELPER

	select DRM_KMS_FB_HELPER

	select DRM_PANEL

	select FB_SYS_FILLRECT

	select FB_SYS_COPYAREA

	select FB_SYS_IMAGEBLIT

	select FB_SYS_FOPS

	select REGMAP_MMIO

	select VIDEOMODE_HELPERS

	help

	  Choose this option if you have an Freescale DCU chipset.

	  If M is selected the module will be called fsl-dcu-drm.

drivers/gpu/drm/fsl-dcu/Makefile

0 → 100644
+7 −0
Original line number Diff line number Diff line 
fsl-dcu-drm-y := fsl_dcu_drm_drv.o \

		 fsl_dcu_drm_kms.o \

		 fsl_dcu_drm_rgb.o \

		 fsl_dcu_drm_plane.o \

		 fsl_dcu_drm_crtc.o \

		 fsl_dcu_drm_fbdev.o

obj-$(CONFIG_DRM_FSL_DCU)	+= fsl-dcu-drm.o