Commit d3a8f678 authored by Dave Airlie's avatar Dave Airlie
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Merge tag 'sun4i-drm-for-4.7' of... 

Merge tag 'sun4i-drm-for-4.7' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into drm-next

Allwinner DRM driver for 4.7

This pull request introduces the sun4i driver, meant to be used on the
older Allwinner SoCs (A10, A13, A20, A23, A31 and A33).

It currently supports only the A13, which has one of the simplest video
pipeline. Support for other video components and SoCs will be added
eventually.

It supports only a RGB or composite output. It doesn't do HDMI, VGA, LVDS
or power management yet, but that will come in time as well.

* tag 'sun4i-drm-for-4.7' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  MAINTAINERS: Add a maintainer for the Allwinner DRM driver
  drm: sun4i: tv: Add NTSC output standard
  drm: sun4i: tv: Add PAL output standard
  drm: sun4i: Add composite output
  drm: sun4i: Add RGB output
  drm: Add Allwinner A10 Display Engine support
  drm: sun4i: Add DT bindings documentation
  drm: fb: Add seq_file definition
parents 152ef5fa bf1139df

Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt

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Allwinner A10 Display Pipeline

==============================



The Allwinner A10 Display pipeline is composed of several components

that are going to be documented below:



TV Encoder

----------



The TV Encoder supports the composite and VGA output. It is one end of

the pipeline.



Required properties:

 - compatible: value should be "allwinner,sun4i-a10-tv-encoder".

 - reg: base address and size of memory-mapped region

 - clocks: the clocks driving the TV encoder

 - resets: phandle to the reset controller driving the encoder



- ports: A ports node with endpoint definitions as defined in

  Documentation/devicetree/bindings/media/video-interfaces.txt. The

  first port should be the input endpoint.



TCON

----



The TCON acts as a timing controller for RGB, LVDS and TV interfaces.



Required properties:

 - compatible: value should be "allwinner,sun5i-a13-tcon".

 - reg: base address and size of memory-mapped region

 - interrupts: interrupt associated to this IP

 - clocks: phandles to the clocks feeding the TCON. Three are needed:

   - 'ahb': the interface clocks

   - 'tcon-ch0': The clock driving the TCON channel 0

   - 'tcon-ch1': The clock driving the TCON channel 1

 - resets: phandles to the reset controllers driving the encoder

   - "lcd": the reset line for the TCON channel 0



 - clock-names: the clock names mentioned above

 - reset-names: the reset names mentioned above

 - clock-output-names: Name of the pixel clock created



- ports: A ports node with endpoint definitions as defined in

  Documentation/devicetree/bindings/media/video-interfaces.txt. The

  first port should be the input endpoint, the second one the output



  The output should have two endpoints. The first is the block

  connected to the TCON channel 0 (usually a panel or a bridge), the

  second the block connected to the TCON channel 1 (usually the TV

  encoder)





Display Engine Backend

----------------------



The display engine backend exposes layers and sprites to the

system.



Required properties:

  - compatible: value must be one of:

    * allwinner,sun5i-a13-display-backend

  - reg: base address and size of the memory-mapped region.

  - clocks: phandles to the clocks feeding the frontend and backend

    * ahb: the backend interface clock

    * mod: the backend module clock

    * ram: the backend DRAM clock

  - clock-names: the clock names mentioned above

  - resets: phandles to the reset controllers driving the backend



- ports: A ports node with endpoint definitions as defined in

  Documentation/devicetree/bindings/media/video-interfaces.txt. The

  first port should be the input endpoints, the second one the output



Display Engine Frontend

-----------------------



The display engine frontend does formats conversion, scaling,

deinterlacing and color space conversion.



Required properties:

  - compatible: value must be one of:

    * allwinner,sun5i-a13-display-frontend

  - reg: base address and size of the memory-mapped region.

  - interrupts: interrupt associated to this IP

  - clocks: phandles to the clocks feeding the frontend and backend

    * ahb: the backend interface clock

    * mod: the backend module clock

    * ram: the backend DRAM clock

  - clock-names: the clock names mentioned above

  - resets: phandles to the reset controllers driving the backend



- ports: A ports node with endpoint definitions as defined in

  Documentation/devicetree/bindings/media/video-interfaces.txt. The

  first port should be the input endpoints, the second one the outputs





Display Engine Pipeline

-----------------------



The display engine pipeline (and its entry point, since it can be

either directly the backend or the frontend) is represented as an

extra node.



Required properties:

  - compatible: value must be one of:

    * allwinner,sun5i-a13-display-engine



  - allwinner,pipelines: list of phandle to the display engine

    frontends available.



Example:



panel: panel {

	compatible = "olimex,lcd-olinuxino-43-ts";

	#address-cells = <1>;

	#size-cells = <0>;



	port {

		#address-cells = <1>;

		#size-cells = <0>;



		panel_input: endpoint {

			remote-endpoint = <&tcon0_out_panel>;

		};

	};

};



tve0: tv-encoder@01c0a000 {

	compatible = "allwinner,sun4i-a10-tv-encoder";

	reg = <0x01c0a000 0x1000>;

	clocks = <&ahb_gates 34>;

	resets = <&tcon_ch0_clk 0>;



	port {

		#address-cells = <1>;

		#size-cells = <0>;



		tve0_in_tcon0: endpoint@0 {

			reg = <0>;

			remote-endpoint = <&tcon0_out_tve0>;

		};

	};

};



tcon0: lcd-controller@1c0c000 {

	compatible = "allwinner,sun5i-a13-tcon";

	reg = <0x01c0c000 0x1000>;

	interrupts = <44>;

	resets = <&tcon_ch0_clk 1>;

	reset-names = "lcd";

	clocks = <&ahb_gates 36>,

		 <&tcon_ch0_clk>,

		 <&tcon_ch1_clk>;

	clock-names = "ahb",

		      "tcon-ch0",

		      "tcon-ch1";

	clock-output-names = "tcon-pixel-clock";



	ports {

		#address-cells = <1>;

		#size-cells = <0>;



		tcon0_in: port@0 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <0>;



			tcon0_in_be0: endpoint@0 {

				reg = <0>;

				remote-endpoint = <&be0_out_tcon0>;

			};

		};



		tcon0_out: port@1 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <1>;



			tcon0_out_panel: endpoint@0 {

				reg = <0>;

				remote-endpoint = <&panel_input>;

			};



			tcon0_out_tve0: endpoint@1 {

				reg = <1>;

				remote-endpoint = <&tve0_in_tcon0>;

			};

		};

	};

};



fe0: display-frontend@1e00000 {

	compatible = "allwinner,sun5i-a13-display-frontend";

	reg = <0x01e00000 0x20000>;

	interrupts = <47>;

	clocks = <&ahb_gates 46>, <&de_fe_clk>,

		 <&dram_gates 25>;

	clock-names = "ahb", "mod",

		      "ram";

	resets = <&de_fe_clk>;



	ports {

		#address-cells = <1>;

		#size-cells = <0>;



		fe0_out: port@1 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <1>;



			fe0_out_be0: endpoint {

				remote-endpoint = <&be0_in_fe0>;

			};

		};

	};

};



be0: display-backend@1e60000 {

	compatible = "allwinner,sun5i-a13-display-backend";

	reg = <0x01e60000 0x10000>;

	clocks = <&ahb_gates 44>, <&de_be_clk>,

		 <&dram_gates 26>;

	clock-names = "ahb", "mod",

		      "ram";

	resets = <&de_be_clk>;



	ports {

		#address-cells = <1>;

		#size-cells = <0>;



		be0_in: port@0 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <0>;



			be0_in_fe0: endpoint@0 {

				reg = <0>;

				remote-endpoint = <&fe0_out_be0>;

			};

		};



		be0_out: port@1 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <1>;



			be0_out_tcon0: endpoint@0 {

				reg = <0>;

				remote-endpoint = <&tcon0_in_be0>;

			};

		};

	};

};



display-engine {

	compatible = "allwinner,sun5i-a13-display-engine";

	allwinner,pipelines = <&fe0>;

};

MAINTAINERS

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@@ -3809,6 +3809,13 @@ S: Supported 
F:	drivers/gpu/drm/atmel-hlcdc/

F:	Documentation/devicetree/bindings/drm/atmel/



DRM DRIVERS FOR ALLWINNER A10

M:	Maxime Ripard  <maxime.ripard@free-electrons.com>

L:	dri-devel@lists.freedesktop.org

S:	Supported

F:	drivers/gpu/drm/sun4i/

F:	Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt



DRM DRIVERS FOR EXYNOS

M:	Inki Dae <inki.dae@samsung.com>

M:	Joonyoung Shim <jy0922.shim@samsung.com>

drivers/gpu/drm/Kconfig

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@@ -252,6 +252,8 @@ source "drivers/gpu/drm/rcar-du/Kconfig" 


source "drivers/gpu/drm/shmobile/Kconfig"



source "drivers/gpu/drm/sun4i/Kconfig"



source "drivers/gpu/drm/omapdrm/Kconfig"



source "drivers/gpu/drm/tilcdc/Kconfig"

drivers/gpu/drm/Makefile

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#



# Makefile for the drm device driver.  This driver provides support for the

# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
@@ -65,6 +65,7 @@ obj-$(CONFIG_DRM_ATMEL_HLCDC) += atmel-hlcdc/ 
obj-$(CONFIG_DRM_RCAR_DU) += rcar-du/

obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/

obj-y			+= omapdrm/

obj-$(CONFIG_DRM_SUN4I) += sun4i/

obj-y			+= tilcdc/

obj-$(CONFIG_DRM_QXL) += qxl/

obj-$(CONFIG_DRM_BOCHS) += bochs/

drivers/gpu/drm/sun4i/Kconfig

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config DRM_SUN4I

	tristate "DRM Support for Allwinner A10 Display Engine"

	depends on DRM && ARM

	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.

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