eadtec Open Source‌ HMI panel driver

arch/arm/boot/dts/overlays/Makefile

@@ -370,7 +370,9 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	wifimac.dtbo \
 	wittypi.dtbo \
 	wm8960-soundcard.dtbo \
-	ws2812-pio.dtbo
+	ws2812-pio.dtbo \
+	vc4-kms-dsi-edatec-panel-070c.dtbo \
+	vc4-kms-dsi-edatec-panel-101c.dtbo
 
 targets += dtbs dtbs_install
 targets += $(dtbo-y)

arch/arm/boot/dts/overlays/vc4-kms-dsi-edatec-panel-070c-overlay.dts

@@ -0,0 +1,105 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835";
+
+	i2c_frag: fragment@0 {
+		target = <&i2c_csi_dsi>;
+		__overlay__ {
+			#gpio-cells = <2>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			reg_display: reg_display@27 {
+				reg = <0x27>;
+				compatible = "rzw,t70p383rk-v2";
+
+				gpio-controller;
+				#gpio-cells = <2>;
+
+				port {
+					panel_in: endpoint {
+						remote-endpoint = <&dsi_out>;
+					};
+				};	
+			};
+
+			gt911: gt911@14 {
+				compatible = "goodix,gt911";
+				reg = <0x14>;
+
+				reset-gpios = <&reg_display 3 0>;
+				interrupt-parent = <&gpio>;
+				interrupts = <2 2>;
+				irq-gpios = <&gpio 2 0>;
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&dsi1>;
+		__overlay__ {
+			status = "okay";
+			port {
+				dsi_out: endpoint {
+					remote-endpoint = <&panel_in>;
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c0if>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@3 {
+		target = <&i2c0mux>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@4 {
+		target = <&i2c_arm>;
+		__dormant__ {
+			status = "okay";
+		};
+	};
+
+	fragment@5 {
+		target = <&gpio>;
+		__overlay__ {
+			gt911_pins: gt911_pins {
+				brcm,pins = <2>;
+				brcm,function = <0>;
+				brcm,pull = <2>;
+			};
+		};
+	};
+
+	fragment@6 {
+		target = <&reg_display>;
+		__dormant__ {
+			compatible = "rzw,t70p383rk-lite";
+		};
+	};
+
+	__overrides__ {
+		i2c1 = <&i2c_frag>, "target:0=",<&i2c1>,
+				<0>,"-2-3+4";
+		interrupt = <&gt911_pins>,"brcm,pins:0",
+			<&gt911>,"interrupts:0",
+			<&gt911>,"irq-gpios:4";
+
+		pi4 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>;
+		cm4 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>;
+		pi5 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>;
+		cm5 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi0>;
+		cm0 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>,<0>, "+6";
+	};
+};

arch/arm/boot/dts/overlays/vc4-kms-dsi-edatec-panel-101c-overlay.dts

@@ -0,0 +1,131 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			vdd_lcd: fixedregulator_lcd {
+				compatible = "regulator-fixed";
+				regulator-name = "vdd_lcd";
+				regulator-max-microvolt = <5000000>;
+				regulator-min-microvolt = <5000000>;
+
+				gpios = <&reg_display 4 0>;
+				regulator-boot-on;
+				enable-active-high;			
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&dsi1>;
+		__overlay__{
+			status = "okay";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			port {
+				dsi_out_port:endpoint {
+					remote-endpoint = <&panel_dsi_port>;
+				};
+			};
+
+			ili9881c:ili9881c@0 {
+				compatible    = "rzw,t101p136cq-rpi4";
+				status        = "okay";
+				reg           = <0>;
+
+				reset-gpios = <&reg_display 2 0>;
+				backlight = <&reg_display>;
+				power-supply = <&vdd_lcd>;
+				rotation = <270>;
+
+				port {
+					panel_dsi_port: endpoint {
+						remote-endpoint = <&dsi_out_port>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c0if>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@3 {
+		target = <&i2c0mux>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@4 {
+		target = <&gpio>;
+		__overlay__ {
+			gt928_pins: gt928_pins {
+				brcm,pins = <16>;
+				brcm,function = <0>;
+				brcm,pull = <2>;
+			};
+		};
+	};
+
+	i2c_frag: fragment@5 {
+		target = <&i2c_csi_dsi>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			reg_display: reg_display@27 {
+				compatible = "edatec,disp-regulator";
+				reg = <0x27>;
+				gpio-controller;
+				#gpio-cells = <2>;
+			};
+
+			gt928:gt928@14 {
+				compatible = "goodix,gt928";
+				reg = <0x14>;
+
+				reset-gpios = <&reg_display 3 0>;
+				interrupt-parent = <&gpio>;
+				interrupts = <16 2>;
+				irq-gpios = <&gpio 16 0>;
+			};
+		};
+	};
+
+	fragment@6 {
+		target = <&ili9881c>;
+		__dormant__ {
+			compatible = "rzw,t101p136cq-rpi4-lite";
+		};
+	};
+
+	fragment@7 {
+		target = <&ili9881c>;
+		__dormant__ {
+			compatible = "rzw,t101p136cq-rpi5";
+		};
+	};
+
+	__overrides__ {
+		interrupt = <&gt928_pins>,"brcm,pins:0",
+			<&gt928>,"interrupts:0",
+			<&gt928>,"irq-gpios:4";
+		rotation = <&ili9881c>,"rotation:0";
+
+		pi4 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>,<0>, "+6";
+		cm4 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>;
+		pi5 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>,<0>, "+7";
+		cm5 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi0>,<0>, "+7";
+		cm0 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi>,<0>, "+6";
+	};
+};

drivers/gpu/drm/panel/Kconfig

@@ -1221,4 +1221,14 @@
 	  Say Y here if you want to enable support for the Xinpeng
 	  XPP055C272 controller for 720x1280 LCD panels with MIPI/RGB/SPI
 	  system interfaces.
+
+config DRM_PANEL_EDATEC_7INCH
+	tristate "EDATEC 7INCH TFT LCD panel driver"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for the EDATEC
+	  7inch Touchscreens.  To compile this driver as a module,
+	  choose M here.
 endmenu

drivers/gpu/drm/panel/Makefile

@@ -122,3 +122,4 @@ obj-$(CONFIG_DRM_PANEL_WAVESHARE_TOUCHSCREEN) += panel-waveshare-dsi.o
 obj-$(CONFIG_DRM_PANEL_WAVESHARE_TOUCHSCREEN_V2) += panel-waveshare-dsi-v2.o
 obj-$(CONFIG_DRM_PANEL_WIDECHIPS_WS2401) += panel-widechips-ws2401.o
 obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o
+obj-$(CONFIG_DRM_PANEL_EDATEC_7INCH) += panel-edatec-dsi.o