drm: Add NVIDIA Tegra20 support

This commit adds a KMS driver for the Tegra20 SoC. This includes basic support for host1x and the two display controllers found on the Tegra20 SoC. Each display controller can drive a separate RGB/LVDS output. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Mark Zhang <markz@nvidia.com> Reviewed-by: Mark Zhang <markz@nvidia.com> Tested-by: Mark Zhang <markz@nvidia.com> Tested-and-acked-by: Alexandre Courbot <acourbot@nvidia.com> Acked-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
mariux64 · Nov 20, 2012 · d8f4a9e · d8f4a9e
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diff --git a/Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt b/Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt
@@ -0,0 +1,191 @@
+NVIDIA Tegra host1x
+
+Required properties:
+- compatible: "nvidia,tegra<chip>-host1x"
+- reg: Physical base address and length of the controller's registers.
+- interrupts: The interrupt outputs from the controller.
+- #address-cells: The number of cells used to represent physical base addresses
+  in the host1x address space. Should be 1.
+- #size-cells: The number of cells used to represent the size of an address
+  range in the host1x address space. Should be 1.
+- ranges: The mapping of the host1x address space to the CPU address space.
+
+The host1x top-level node defines a number of children, each representing one
+of the following host1x client modules:
+
+- mpe: video encoder
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-mpe"
+  - reg: Physical base address and length of the controller's registers.
+  - interrupts: The interrupt outputs from the controller.
+
+- vi: video input
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-vi"
+  - reg: Physical base address and length of the controller's registers.
+  - interrupts: The interrupt outputs from the controller.
+
+- epp: encoder pre-processor
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-epp"
+  - reg: Physical base address and length of the controller's registers.
+  - interrupts: The interrupt outputs from the controller.
+
+- isp: image signal processor
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-isp"
+  - reg: Physical base address and length of the controller's registers.
+  - interrupts: The interrupt outputs from the controller.
+
+- gr2d: 2D graphics engine
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-gr2d"
+  - reg: Physical base address and length of the controller's registers.
+  - interrupts: The interrupt outputs from the controller.
+
+- gr3d: 3D graphics engine
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-gr3d"
+  - reg: Physical base address and length of the controller's registers.
+
+- dc: display controller
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-dc"
+  - reg: Physical base address and length of the controller's registers.
+  - interrupts: The interrupt outputs from the controller.
+
+  Each display controller node has a child node, named "rgb", that represents
+  the RGB output associated with the controller. It can take the following
+  optional properties:
+  - nvidia,ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
+  - nvidia,hpd-gpio: specifies a GPIO used for hotplug detection
+  - nvidia,edid: supplies a binary EDID blob
+
+- hdmi: High Definition Multimedia Interface
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-hdmi"
+  - reg: Physical base address and length of the controller's registers.
+  - interrupts: The interrupt outputs from the controller.
+  - vdd-supply: regulator for supply voltage
+  - pll-supply: regulator for PLL
+
+  Optional properties:
+  - nvidia,ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
+  - nvidia,hpd-gpio: specifies a GPIO used for hotplug detection
+  - nvidia,edid: supplies a binary EDID blob
+
+- tvo: TV encoder output
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-tvo"
+  - reg: Physical base address and length of the controller's registers.
+  - interrupts: The interrupt outputs from the controller.
+
+- dsi: display serial interface
+
+  Required properties:
+  - compatible: "nvidia,tegra<chip>-dsi"
+  - reg: Physical base address and length of the controller's registers.
+
+Example:
+
+/ {
+	...
+
+	host1x {
+		compatible = "nvidia,tegra20-host1x", "simple-bus";
+		reg = <0x50000000 0x00024000>;
+		interrupts = <0 65 0x04   /* mpcore syncpt */
+			      0 67 0x04>; /* mpcore general */
+
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		ranges = <0x54000000 0x54000000 0x04000000>;
+
+		mpe {
+			compatible = "nvidia,tegra20-mpe";
+			reg = <0x54040000 0x00040000>;
+			interrupts = <0 68 0x04>;
+		};
+
+		vi {
+			compatible = "nvidia,tegra20-vi";
+			reg = <0x54080000 0x00040000>;
+			interrupts = <0 69 0x04>;
+		};
+
+		epp {
+			compatible = "nvidia,tegra20-epp";
+			reg = <0x540c0000 0x00040000>;
+			interrupts = <0 70 0x04>;
+		};
+
+		isp {
+			compatible = "nvidia,tegra20-isp";
+			reg = <0x54100000 0x00040000>;
+			interrupts = <0 71 0x04>;
+		};
+
+		gr2d {
+			compatible = "nvidia,tegra20-gr2d";
+			reg = <0x54140000 0x00040000>;
+			interrupts = <0 72 0x04>;
+		};
+
+		gr3d {
+			compatible = "nvidia,tegra20-gr3d";
+			reg = <0x54180000 0x00040000>;
+		};
+
+		dc@54200000 {
+			compatible = "nvidia,tegra20-dc";
+			reg = <0x54200000 0x00040000>;
+			interrupts = <0 73 0x04>;
+
+			rgb {
+				status = "disabled";
+			};
+		};
+
+		dc@54240000 {
+			compatible = "nvidia,tegra20-dc";
+			reg = <0x54240000 0x00040000>;
+			interrupts = <0 74 0x04>;
+
+			rgb {
+				status = "disabled";
+			};
+		};
+
+		hdmi {
+			compatible = "nvidia,tegra20-hdmi";
+			reg = <0x54280000 0x00040000>;
+			interrupts = <0 75 0x04>;
+			status = "disabled";
+		};
+
+		tvo {
+			compatible = "nvidia,tegra20-tvo";
+			reg = <0x542c0000 0x00040000>;
+			interrupts = <0 76 0x04>;
+			status = "disabled";
+		};
+
+		dsi {
+			compatible = "nvidia,tegra20-dsi";
+			reg = <0x54300000 0x00040000>;
+			status = "disabled";
+		};
+	};
+
+	...
+};
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
@@ -210,3 +210,5 @@ source "drivers/gpu/drm/mgag200/Kconfig"
 source "drivers/gpu/drm/cirrus/Kconfig"
 
 source "drivers/gpu/drm/shmobile/Kconfig"
+
+source "drivers/gpu/drm/tegra/Kconfig"
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
@@ -48,4 +48,5 @@ obj-$(CONFIG_DRM_GMA500) += gma500/
 obj-$(CONFIG_DRM_UDL) += udl/
 obj-$(CONFIG_DRM_AST) += ast/
 obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/
+obj-$(CONFIG_DRM_TEGRA) += tegra/
 obj-y			+= i2c/
diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig
@@ -0,0 +1,23 @@
+config DRM_TEGRA
+	tristate "NVIDIA Tegra DRM"
+	depends on DRM && OF && ARCH_TEGRA
+	select DRM_KMS_HELPER
+	select DRM_GEM_CMA_HELPER
+	select DRM_KMS_CMA_HELPER
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	help
+	  Choose this option if you have an NVIDIA Tegra SoC.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called tegra-drm.
+
+if DRM_TEGRA
+
+config DRM_TEGRA_DEBUG
+	bool "NVIDIA Tegra DRM debug support"
+	help
+	  Say yes here to enable debugging support.
+
+endif
diff --git a/drivers/gpu/drm/tegra/Makefile b/drivers/gpu/drm/tegra/Makefile
@@ -0,0 +1,7 @@
+ccflags-y := -Iinclude/drm
+ccflags-$(CONFIG_DRM_TEGRA_DEBUG) += -DDEBUG
+
+tegra-drm-y := drm.o fb.o dc.o host1x.o
+tegra-drm-y += output.o rgb.o
+
+obj-$(CONFIG_DRM_TEGRA) += tegra-drm.o