Rpi 4.4.y: HDMI hotplug detection, overlay cleanup

arch/arm/boot/dts/bcm2708-rpi-b-plus.dts

@@ -116,6 +116,10 @@
 	};
 };
 
+&hdmi {
+	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+};
+
 / {
 	__overrides__ {
 		uart0 = <&uart0>,"status";

arch/arm/boot/dts/bcm2708-rpi-b.dts

@@ -110,6 +110,10 @@
 	};
 };
 
+&hdmi {
+	hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
+};
+
 / {
 	__overrides__ {
 		uart0 = <&uart0>,"status";

arch/arm/boot/dts/bcm2708_common.dtsi

@@ -1,4 +1,7 @@
+#include "dt-bindings/clock/bcm2835.h"
 #include <dt-bindings/clock/bcm2835-aux.h>
+#include "dt-bindings/power/raspberrypi-power.h"
+#include "dt-bindings/gpio/gpio.h"
 #include "skeleton.dtsi"
 
 / {
@@ -170,6 +173,18 @@
 			status = "disabled";
 		};
 
+		pixelvalve0: pixelvalve@7e206000 {
+			compatible = "brcm,bcm2835-pixelvalve0";
+			reg = <0x7e206000 0x100>;
+			status = "disabled";
+		};
+
+		pixelvalve1: pixelvalve@7e207000 {
+			compatible = "brcm,bcm2835-pixelvalve1";
+			reg = <0x7e207000 0x100>;
+			status = "disabled";
+		};
+
 		pwm: pwm@7e20c000 {
 			compatible = "brcm,bcm2835-pwm";
 			reg = <0x7e20c000 0x28>;
@@ -227,6 +242,12 @@
 			status = "disabled";
 		};
 
+		hvs: hvs@7e400000 {
+			compatible = "brcm,bcm2835-hvs";
+			reg = <0x7e400000 0x6000>;
+			status = "disabled";
+		};
+
 		i2c1: i2c@7e804000 {
 			compatible = "brcm,bcm2708-i2c";
 			reg = <0x7e804000 0x1000>;
@@ -261,6 +282,25 @@
 			status = "disabled";
 		};
 
+		pixelvalve2: pixelvalve@7e807000 {
+			compatible = "brcm,bcm2835-pixelvalve2";
+			reg = <0x7e807000 0x100>;
+			status = "disabled";
+		};
+
+		hdmi: hdmi@7e902000 {
+			compatible = "brcm,bcm2835-hdmi";
+			reg = <0x7e902000 0x600>,
+			      <0x7e808000 0x100>;
+			ddc = <&i2c2>;
+			hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
+			clocks = <&cprman BCM2835_PLLH_PIX>,
+				 <&cprman BCM2835_CLOCK_HSM>;
+			clock-names = "pixel", "hdmi";
+			power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
+			status = "disabled";
+		};
+
 		usb: usb@7e980000 {
 			compatible = "brcm,bcm2708-usb";
 			reg = <0x7e980000 0x10000>,
@@ -269,6 +309,12 @@
 				     <1 9>;
 		};
 
+		v3d: v3d@7ec00000 {
+			compatible = "brcm,vc4-v3d";
+			reg = <0x7ec00000 0x1000>;
+			status = "disabled";
+		};
+
 		firmware: firmware {
 			compatible = "raspberrypi,bcm2835-firmware";
 			mboxes = <&mailbox>;
@@ -303,6 +349,11 @@
 			firmware = <&firmware>;
 		};
 
+		gpu: gpu {
+			compatible = "brcm,bcm2835-vc4";
+			status = "disabled";
+		};
+
 		/* Onboard audio */
 		audio: audio {
 			compatible = "brcm,bcm2835-audio";

arch/arm/boot/dts/bcm2709-rpi-2-b.dts

@@ -116,6 +116,10 @@
 	};
 };
 
+&hdmi {
+	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+};
+
 / {
 	__overrides__ {
 		uart0 = <&uart0>,"status";

arch/arm/boot/dts/bcm2710-rpi-3-b.dts

@@ -161,6 +161,10 @@
 	};
 };
 
+&hdmi {
+	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+};
+
 / {
 	chosen {
 		bootargs = "8250.nr_uarts=1";

arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts

@@ -5,129 +5,125 @@
 /dts-v1/;
 /plugin/;
 
-#include "dt-bindings/clock/bcm2835.h"
-#include "dt-bindings/power/raspberrypi-power.h"
-#include "dt-bindings/gpio/gpio.h"
-
 / {
 	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
 
 	fragment@0 {
+		target-path = "/chosen";
+		__overlay__ {
+			bootargs = "cma=256M@256M";
+		};
+	};
+
+	fragment@1 {
+		target-path = "/chosen";
+		__dormant__ {
+			bootargs = "cma=192M@256M";
+		};
+	};
+
+	fragment@2 {
+		target-path = "/chosen";
+		__dormant__ {
+			bootargs = "cma=128M@128M";
+		};
+	};
+
+	fragment@3 {
+		target-path = "/chosen";
+		__dormant__ {
+			bootargs = "cma=96M@128M";
+		};
+	};
+
+	fragment@4 {
+		target-path = "/chosen";
+		__dormant__ {
+			bootargs = "cma=64M@64M";
+		};
+	};
+
+	fragment@5 {
 		target = <&i2c2>;
 		__overlay__  {
 			status = "okay";
 		};
 	};
 
-	fragment@1 {
+	fragment@6 {
 		target = <&cprman>;
 		__overlay__  {
 			status = "okay";
 		};
 	};
 
-	fragment@2 {
+	fragment@7 {
 		target = <&fb>;
 		__overlay__  {
 			status = "disabled";
 		};
 	};
 
-	fragment@3 {
-		target = <&soc>;
+	fragment@8 {
+		target = <&pixelvalve0>;
 		__overlay__  {
-			#address-cells = <1>;
-			#size-cells = <1>;
-
-			pixelvalve@7e206000 {
-				compatible = "brcm,bcm2835-pixelvalve0";
-				reg = <0x7e206000 0x100>;
-				interrupts = <2 13>; /* pwa0 */
-			};
-
-			pixelvalve@7e207000 {
-				compatible = "brcm,bcm2835-pixelvalve1";
-				reg = <0x7e207000 0x100>;
-				interrupts = <2 14>; /* pwa1 */
-			};
-
-			hvs@7e400000 {
-				compatible = "brcm,bcm2835-hvs";
-				reg = <0x7e400000 0x6000>;
-				interrupts = <2 1>;
-			};
-
-			pixelvalve@7e807000 {
-				compatible = "brcm,bcm2835-pixelvalve2";
-				reg = <0x7e807000 0x100>;
-				interrupts = <2 10>; /* pixelvalve */
-			};
-
-			hdmi@7e902000 {
-				compatible = "brcm,bcm2835-hdmi";
-				reg = <0x7e902000 0x600>,
-				      <0x7e808000 0x100>;
-				interrupts = <2 8>, <2 9>;
-				ddc = <&i2c2>;
-				hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
-				clocks = <&cprman BCM2835_PLLH_PIX>,
-					 <&cprman BCM2835_CLOCK_HSM>;
-				clock-names = "pixel", "hdmi";
-				power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
-			};
-
-			v3d@7ec00000 {
-				compatible = "brcm,vc4-v3d";
-				reg = <0x7ec00000 0x1000>;
-				interrupts = <1 10>;
-			};
-
-			gpu@7e4c0000 {
-				compatible = "brcm,bcm2835-vc4";
-			};
+			interrupts = <2 13>; /* pwa0 */
+			status = "okay";
 		};
 	};
 
-	fragment@4 {
-		target-path = "/chosen";
-		__overlay__ {
-			bootargs = "cma=256M@256M";
+	fragment@9 {
+		target = <&pixelvalve1>;
+		__overlay__  {
+			interrupts = <2 14>; /* pwa1 */
+			status = "okay";
 		};
 	};
 
-	fragment@5 {
-		target-path = "/chosen";
-		__dormant__ {
-			bootargs = "cma=192M@256M";
+	fragment@10 {
+		target = <&pixelvalve2>;
+		__overlay__  {
+			interrupts = <2 10>; /* pixelvalve */
+			status = "okay";
 		};
 	};
 
-	fragment@6 {
-		target-path = "/chosen";
-		__dormant__ {
-			bootargs = "cma=128M@128M";
+	fragment@11 {
+		target = <&hvs>;
+		__overlay__  {
+			interrupts = <2 1>;
+			status = "okay";
 		};
 	};
 
-	fragment@7 {
-		target-path = "/chosen";
-		__dormant__ {
-			bootargs = "cma=96M@128M";
+	fragment@12 {
+		target = <&hdmi>;
+		__overlay__  {
+			interrupts = <2 8>, <2 9>;
+			status = "okay";
 		};
 	};
 
-	fragment@8 {
-		target-path = "/chosen";
-		__dormant__ {
-			bootargs = "cma=64M@64M";
+	fragment@13 {
+		target = <&v3d>;
+		__overlay__  {
+			interrupts = <1 10>;
+			status = "okay";
+		};
+	};
+
+	fragment@14 {
+		target = <&gpu>;
+		__overlay__  {
+			status = "okay";
 		};
 	};
 
 	__overrides__ {
-		cma-256 = <0>,"+4-5-6-7-8";
-		cma-192 = <0>,"-4+5-6-7-8";
-		cma-128 = <0>,"-4-5+6-7-8";
-		cma-96  = <0>,"-4-5-6+7-8";
-		cma-64  = <0>,"-4-5-6-7+8";
+		cma-256 = <0>,"+0-1-2-3-4";
+		cma-192 = <0>,"-0+1-2-3-4";
+		cma-128 = <0>,"-0-1+2-3-4";
+		cma-96  = <0>,"-0-1-2+3-4";
+		cma-64  = <0>,"-0-1-2-3+4";
 	};
 };

drivers/gpu/drm/vc4/vc4_hdmi.c

@@ -166,8 +166,6 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
 	struct drm_device *dev = connector->dev;
 	struct vc4_dev *vc4 = to_vc4_dev(dev);
 
-	return connector_status_connected;
-
 	if (vc4->hdmi->hpd_gpio) {
 		if (gpio_get_value_cansleep(vc4->hdmi->hpd_gpio) ^
 		    vc4->hdmi->hpd_active_low)