Merge branch 'dts-crossbar' into omap-for-v3.17/dt

Documentation/devicetree/bindings/arm/omap/crossbar.txt

@@ -10,6 +10,7 @@ Required properties:
 - compatible : Should be "ti,irq-crossbar"
 - reg: Base address and the size of the crossbar registers.
 - ti,max-irqs: Total number of irqs available at the interrupt controller.
+- ti,max-crossbar-sources: Maximum number of crossbar sources that can be routed.
 - ti,reg-size: Size of a individual register in bytes. Every individual
 	    register is assumed to be of same size. Valid sizes are 1, 2, 4.
 - ti,irqs-reserved: List of the reserved irq lines that are not muxed using
@@ -17,11 +18,46 @@ Required properties:
 		 so crossbar bar driver should not consider them as free
 		 lines.
 
+Optional properties:
+- ti,irqs-skip: This is similar to "ti,irqs-reserved", but these are for
+  SOC-specific hard-wiring of those irqs which unexpectedly bypasses the
+  crossbar. These irqs have a crossbar register, but still cannot be used.
+
+- ti,irqs-safe-map: integer which maps to a safe configuration to use
+  when the interrupt controller irq is unused (when not provided, default is 0)
+
 Examples:
 		crossbar_mpu: @4a020000 {
 			compatible = "ti,irq-crossbar";
 			reg = <0x4a002a48 0x130>;
 			ti,max-irqs = <160>;
+			ti,max-crossbar-sources = <400>;
 			ti,reg-size = <2>;
 			ti,irqs-reserved = <0 1 2 3 5 6 131 132 139 140>;
+			ti,irqs-skip = <10 133 139 140>;
+		};
+
+Consumer:
+========
+See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt and
+Documentation/devicetree/bindings/arm/gic.txt for further details.
+
+An interrupt consumer on an SoC using crossbar will use:
+	interrupts = <GIC_SPI request_number interrupt_level>
+When the request number is between 0 to that described by
+"ti,max-crossbar-sources", it is assumed to be a crossbar mapping. If the
+request_number is greater than "ti,max-crossbar-sources", then it is mapped as a
+quirky hardware mapping direct to GIC.
+
+Example:
+	device_x@0x4a023000 {
+		/* Crossbar 8 used */
+		interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
+		...
+	};
+
+	device_y@0x4a033000 {
+		/* Direct mapped GIC SPI 1 used */
+		interrupts = <GIC_SPI DIRECT_IRQ(1) IRQ_TYPE_LEVEL_HIGH>;
+		...
 	};

arch/arm/boot/dts/dra7.dtsi

@@ -12,6 +12,9 @@
 
 #include "skeleton.dtsi"
 
+#define MAX_SOURCES 400
+#define DIRECT_IRQ(irq) (MAX_SOURCES + irq)
+
 / {
 	#address-cells = <1>;
 	#size-cells = <1>;
@@ -45,6 +48,7 @@ gic: interrupt-controller@48211000 {
 		compatible = "arm,cortex-a15-gic";
 		interrupt-controller;
 		#interrupt-cells = <3>;
+		arm,routable-irqs = <192>;
 		reg = <0x48211000 0x1000>,
 		      <0x48212000 0x1000>,
 		      <0x48214000 0x2000>,
@@ -79,8 +83,8 @@ ocp {
 		ti,hwmods = "l3_main_1", "l3_main_2";
 		reg = <0x44000000 0x1000000>,
 		      <0x45000000 0x1000>;
-		interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
+		interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI DIRECT_IRQ(10) IRQ_TYPE_LEVEL_HIGH>;
 
 		prm: prm@4ae06000 {
 			compatible = "ti,dra7-prm";
@@ -155,10 +159,10 @@ dra7_pmx_core: pinmux@4a003400 {
 		sdma: dma-controller@4a056000 {
 			compatible = "ti,omap4430-sdma";
 			reg = <0x4a056000 0x1000>;
-			interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
-				     <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>,
-				     <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>,
-				     <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
 			#dma-cells = <1>;
 			#dma-channels = <32>;
 			#dma-requests = <127>;
@@ -167,7 +171,7 @@ sdma: dma-controller@4a056000 {
 		gpio1: gpio@4ae10000 {
 			compatible = "ti,omap4-gpio";
 			reg = <0x4ae10000 0x200>;
-			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "gpio1";
 			gpio-controller;
 			#gpio-cells = <2>;
@@ -178,7 +182,7 @@ gpio1: gpio@4ae10000 {
 		gpio2: gpio@48055000 {
 			compatible = "ti,omap4-gpio";
 			reg = <0x48055000 0x200>;
-			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "gpio2";
 			gpio-controller;
 			#gpio-cells = <2>;
@@ -189,7 +193,7 @@ gpio2: gpio@48055000 {
 		gpio3: gpio@48057000 {
 			compatible = "ti,omap4-gpio";
 			reg = <0x48057000 0x200>;
-			interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "gpio3";
 			gpio-controller;
 			#gpio-cells = <2>;
@@ -200,7 +204,7 @@ gpio3: gpio@48057000 {
 		gpio4: gpio@48059000 {
 			compatible = "ti,omap4-gpio";
 			reg = <0x48059000 0x200>;
-			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "gpio4";
 			gpio-controller;
 			#gpio-cells = <2>;
@@ -211,7 +215,7 @@ gpio4: gpio@48059000 {
 		gpio5: gpio@4805b000 {
 			compatible = "ti,omap4-gpio";
 			reg = <0x4805b000 0x200>;
-			interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "gpio5";
 			gpio-controller;
 			#gpio-cells = <2>;
@@ -222,7 +226,7 @@ gpio5: gpio@4805b000 {
 		gpio6: gpio@4805d000 {
 			compatible = "ti,omap4-gpio";
 			reg = <0x4805d000 0x200>;
-			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "gpio6";
 			gpio-controller;
 			#gpio-cells = <2>;
@@ -233,7 +237,7 @@ gpio6: gpio@4805d000 {
 		gpio7: gpio@48051000 {
 			compatible = "ti,omap4-gpio";
 			reg = <0x48051000 0x200>;
-			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "gpio7";
 			gpio-controller;
 			#gpio-cells = <2>;
@@ -244,7 +248,7 @@ gpio7: gpio@48051000 {
 		gpio8: gpio@48053000 {
 			compatible = "ti,omap4-gpio";
 			reg = <0x48053000 0x200>;
-			interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "gpio8";
 			gpio-controller;
 			#gpio-cells = <2>;
@@ -255,7 +259,7 @@ gpio8: gpio@48053000 {
 		uart1: serial@4806a000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806a000 0x100>;
-			interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart1";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -264,7 +268,7 @@ uart1: serial@4806a000 {
 		uart2: serial@4806c000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806c000 0x100>;
-			interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart2";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -273,7 +277,7 @@ uart2: serial@4806c000 {
 		uart3: serial@48020000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48020000 0x100>;
-			interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart3";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -282,7 +286,7 @@ uart3: serial@48020000 {
 		uart4: serial@4806e000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806e000 0x100>;
-			interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart4";
 			clock-frequency = <48000000>;
                         status = "disabled";
@@ -291,7 +295,7 @@ uart4: serial@4806e000 {
 		uart5: serial@48066000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48066000 0x100>;
-			interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart5";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -300,7 +304,7 @@ uart5: serial@48066000 {
 		uart6: serial@48068000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48068000 0x100>;
-			interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart6";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -309,6 +313,7 @@ uart6: serial@48068000 {
 		uart7: serial@48420000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48420000 0x100>;
+			interrupts = <GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart7";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -317,6 +322,7 @@ uart7: serial@48420000 {
 		uart8: serial@48422000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48422000 0x100>;
+			interrupts = <GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart8";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -325,6 +331,7 @@ uart8: serial@48422000 {
 		uart9: serial@48424000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48424000 0x100>;
+			interrupts = <GIC_SPI 220 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart9";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -333,6 +340,7 @@ uart9: serial@48424000 {
 		uart10: serial@4ae2b000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4ae2b000 0x100>;
+			interrupts = <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart10";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -341,7 +349,7 @@ uart10: serial@4ae2b000 {
 		timer1: timer@4ae18000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x4ae18000 0x80>;
-			interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer1";
 			ti,timer-alwon;
 		};
@@ -349,28 +357,28 @@ timer1: timer@4ae18000 {
 		timer2: timer@48032000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48032000 0x80>;
-			interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer2";
 		};
 
 		timer3: timer@48034000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48034000 0x80>;
-			interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer3";
 		};
 
 		timer4: timer@48036000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48036000 0x80>;
-			interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer4";
 		};
 
 		timer5: timer@48820000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48820000 0x80>;
-			interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer5";
 			ti,timer-dsp;
 		};
@@ -378,7 +386,7 @@ timer5: timer@48820000 {
 		timer6: timer@48822000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48822000 0x80>;
-			interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer6";
 			ti,timer-dsp;
 			ti,timer-pwm;
@@ -387,7 +395,7 @@ timer6: timer@48822000 {
 		timer7: timer@48824000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48824000 0x80>;
-			interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer7";
 			ti,timer-dsp;
 		};
@@ -395,7 +403,7 @@ timer7: timer@48824000 {
 		timer8: timer@48826000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48826000 0x80>;
-			interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer8";
 			ti,timer-dsp;
 			ti,timer-pwm;
@@ -404,21 +412,21 @@ timer8: timer@48826000 {
 		timer9: timer@4803e000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x4803e000 0x80>;
-			interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer9";
 		};
 
 		timer10: timer@48086000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48086000 0x80>;
-			interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer10";
 		};
 
 		timer11: timer@48088000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48088000 0x80>;
-			interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer11";
 			ti,timer-pwm;
 		};
@@ -426,6 +434,7 @@ timer11: timer@48088000 {
 		timer13: timer@48828000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x48828000 0x80>;
+			interrupts = <GIC_SPI 339 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer13";
 			status = "disabled";
 		};
@@ -433,6 +442,7 @@ timer13: timer@48828000 {
 		timer14: timer@4882a000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x4882a000 0x80>;
+			interrupts = <GIC_SPI 340 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer14";
 			status = "disabled";
 		};
@@ -440,6 +450,7 @@ timer14: timer@4882a000 {
 		timer15: timer@4882c000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x4882c000 0x80>;
+			interrupts = <GIC_SPI 341 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer15";
 			status = "disabled";
 		};
@@ -447,6 +458,7 @@ timer15: timer@4882c000 {
 		timer16: timer@4882e000 {
 			compatible = "ti,omap5430-timer";
 			reg = <0x4882e000 0x80>;
+			interrupts = <GIC_SPI 342 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "timer16";
 			status = "disabled";
 		};
@@ -454,7 +466,7 @@ timer16: timer@4882e000 {
 		wdt2: wdt@4ae14000 {
 			compatible = "ti,omap4-wdt";
 			reg = <0x4ae14000 0x80>;
-			interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "wd_timer2";
 		};
 
@@ -468,14 +480,14 @@ hwspinlock: spinlock@4a0f6000 {
 		dmm@4e000000 {
 			compatible = "ti,omap5-dmm";
 			reg = <0x4e000000 0x800>;
-			interrupts = <0 113 0x4>;
+			interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "dmm";
 		};
 
 		i2c1: i2c@48070000 {
 			compatible = "ti,omap4-i2c";
 			reg = <0x48070000 0x100>;
-			interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "i2c1";
@@ -485,7 +497,7 @@ i2c1: i2c@48070000 {
 		i2c2: i2c@48072000 {
 			compatible = "ti,omap4-i2c";
 			reg = <0x48072000 0x100>;
-			interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "i2c2";
@@ -495,7 +507,7 @@ i2c2: i2c@48072000 {
 		i2c3: i2c@48060000 {
 			compatible = "ti,omap4-i2c";
 			reg = <0x48060000 0x100>;
-			interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "i2c3";
@@ -505,7 +517,7 @@ i2c3: i2c@48060000 {
 		i2c4: i2c@4807a000 {
 			compatible = "ti,omap4-i2c";
 			reg = <0x4807a000 0x100>;
-			interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "i2c4";
@@ -515,7 +527,7 @@ i2c4: i2c@4807a000 {
 		i2c5: i2c@4807c000 {
 			compatible = "ti,omap4-i2c";
 			reg = <0x4807c000 0x100>;
-			interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "i2c5";
@@ -525,7 +537,7 @@ i2c5: i2c@4807c000 {
 		mmc1: mmc@4809c000 {
 			compatible = "ti,omap4-hsmmc";
 			reg = <0x4809c000 0x400>;
-			interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "mmc1";
 			ti,dual-volt;
 			ti,needs-special-reset;
@@ -538,7 +550,7 @@ mmc1: mmc@4809c000 {
 		mmc2: mmc@480b4000 {
 			compatible = "ti,omap4-hsmmc";
 			reg = <0x480b4000 0x400>;
-			interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "mmc2";
 			ti,needs-special-reset;
 			dmas = <&sdma 47>, <&sdma 48>;
@@ -549,7 +561,7 @@ mmc2: mmc@480b4000 {
 		mmc3: mmc@480ad000 {
 			compatible = "ti,omap4-hsmmc";
 			reg = <0x480ad000 0x400>;
-			interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "mmc3";
 			ti,needs-special-reset;
 			dmas = <&sdma 77>, <&sdma 78>;
@@ -560,7 +572,7 @@ mmc3: mmc@480ad000 {
 		mmc4: mmc@480d1000 {
 			compatible = "ti,omap4-hsmmc";
 			reg = <0x480d1000 0x400>;
-			interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "mmc4";
 			ti,needs-special-reset;
 			dmas = <&sdma 57>, <&sdma 58>;
@@ -703,7 +715,7 @@ abb_gpu: regulator-abb-gpu {
 		mcspi1: spi@48098000 {
 			compatible = "ti,omap4-mcspi";
 			reg = <0x48098000 0x200>;
-			interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "mcspi1";
@@ -724,7 +736,7 @@ mcspi1: spi@48098000 {
 		mcspi2: spi@4809a000 {
 			compatible = "ti,omap4-mcspi";
 			reg = <0x4809a000 0x200>;
-			interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "mcspi2";
@@ -740,7 +752,7 @@ mcspi2: spi@4809a000 {
 		mcspi3: spi@480b8000 {
 			compatible = "ti,omap4-mcspi";
 			reg = <0x480b8000 0x200>;
-			interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "mcspi3";
@@ -753,7 +765,7 @@ mcspi3: spi@480b8000 {
 		mcspi4: spi@480ba000 {
 			compatible = "ti,omap4-mcspi";
 			reg = <0x480ba000 0x200>;
-			interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ti,hwmods = "mcspi4";
@@ -773,7 +785,7 @@ qspi: qspi@4b300000 {
 			clocks = <&qspi_gfclk_div>;
 			clock-names = "fck";
 			num-cs = <4>;
-			interrupts = <0 343 0x4>;
+			interrupts = <GIC_SPI 343 IRQ_TYPE_LEVEL_HIGH>;
 			status = "disabled";
 		};
 
@@ -809,7 +821,7 @@ sata_phy: phy@4A096000 {
 		sata: sata@4a141100 {
 			compatible = "snps,dwc-ahci";
 			reg = <0x4a140000 0x1100>, <0x4a141100 0x7>;
-			interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
 			phys = <&sata_phy>;
 			phy-names = "sata-phy";
 			clocks = <&sata_ref_clk>;
@@ -886,7 +898,7 @@ omap_dwc3_1@48880000 {
 			compatible = "ti,dwc3";
 			ti,hwmods = "usb_otg_ss1";
 			reg = <0x48880000 0x10000>;
-			interrupts = <0 77 4>;
+			interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <1>;
 			utmi-mode = <2>;
@@ -894,7 +906,7 @@ omap_dwc3_1@48880000 {
 			usb1: usb@48890000 {
 				compatible = "snps,dwc3";
 				reg = <0x48890000 0x17000>;
-				interrupts = <0 76 4>;
+				interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
 				phys = <&usb2_phy1>, <&usb3_phy1>;
 				phy-names = "usb2-phy", "usb3-phy";
 				tx-fifo-resize;
@@ -907,7 +919,7 @@ omap_dwc3_2@488c0000 {
 			compatible = "ti,dwc3";
 			ti,hwmods = "usb_otg_ss2";
 			reg = <0x488c0000 0x10000>;
-			interrupts = <0 92 4>;
+			interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <1>;
 			utmi-mode = <2>;
@@ -915,7 +927,7 @@ omap_dwc3_2@488c0000 {
 			usb2: usb@488d0000 {
 				compatible = "snps,dwc3";
 				reg = <0x488d0000 0x17000>;
-				interrupts = <0 78 4>;
+				interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
 				phys = <&usb2_phy2>;
 				phy-names = "usb2-phy";
 				tx-fifo-resize;
@@ -929,7 +941,7 @@ omap_dwc3_3@48900000 {
 			compatible = "ti,dwc3";
 			ti,hwmods = "usb_otg_ss3";
 			reg = <0x48900000 0x10000>;
-		/*	interrupts = <0 TBD 4>; */
+			interrupts = <GIC_SPI 344 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <1>;
 			utmi-mode = <2>;
@@ -938,7 +950,7 @@ omap_dwc3_3@48900000 {
 			usb3: usb@48910000 {
 				compatible = "snps,dwc3";
 				reg = <0x48910000 0x17000>;
-		/*		interrupts = <0 93 4>; */
+				interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
 				tx-fifo-resize;
 				maximum-speed = "high-speed";
 				dr_mode = "otg";
@@ -949,7 +961,7 @@ omap_dwc3_4@48940000 {
 			compatible = "ti,dwc3";
 			ti,hwmods = "usb_otg_ss4";
 			reg = <0x48940000 0x10000>;
-		/*	interrupts = <0 TBD 4>; */
+			interrupts = <GIC_SPI 346 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
 			#size-cells = <1>;
 			utmi-mode = <2>;
@@ -958,7 +970,7 @@ omap_dwc3_4@48940000 {
 			usb4: usb@48950000 {
 				compatible = "snps,dwc3";
 				reg = <0x48950000 0x17000>;
-		/*		interrupts = <0 TBD 4>; */
+				interrupts = <GIC_SPI 345 IRQ_TYPE_LEVEL_HIGH>;
 				tx-fifo-resize;
 				maximum-speed = "high-speed";
 				dr_mode = "otg";
@@ -968,7 +980,7 @@ usb4: usb@48950000 {
 		elm: elm@48078000 {
 			compatible = "ti,am3352-elm";
 			reg = <0x48078000 0xfc0>;      /* device IO registers */
-			interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "elm";
 			status = "disabled";
 		};
@@ -977,13 +989,24 @@ gpmc: gpmc@50000000 {
 			compatible = "ti,am3352-gpmc";
 			ti,hwmods = "gpmc";
 			reg = <0x50000000 0x37c>;      /* device IO registers */
-			interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
 			gpmc,num-cs = <8>;
 			gpmc,num-waitpins = <2>;
 			#address-cells = <2>;
 			#size-cells = <1>;
 			status = "disabled";
 		};
+
+		crossbar_mpu: crossbar@4a020000 {
+			compatible = "ti,irq-crossbar";
+			reg = <0x4a002a48 0x130>;
+			ti,max-irqs = <160>;
+			ti,max-crossbar-sources = <MAX_SOURCES>;
+			ti,reg-size = <2>;
+			ti,irqs-reserved = <0 1 2 3 5 6 131 132>;
+			ti,irqs-skip = <10 133 139 140>;
+			ti,irqs-safe-map = <0>;
+		};
 	};
 };
 

drivers/irqchip/irq-crossbar.c

@@ -15,22 +15,31 @@
 #include <linux/of_irq.h>
 #include <linux/slab.h>
 #include <linux/irqchip/arm-gic.h>
+#include <linux/irqchip/irq-crossbar.h>
 
 #define IRQ_FREE	-1
+#define IRQ_RESERVED	-2
+#define IRQ_SKIP	-3
 #define GIC_IRQ_START	32
 
-/*
+/**
+ * struct crossbar_device - crossbar device description
  * @int_max: maximum number of supported interrupts
+ * @safe_map: safe default value to initialize the crossbar
+ * @max_crossbar_sources: Maximum number of crossbar sources
  * @irq_map: array of interrupts to crossbar number mapping
  * @crossbar_base: crossbar base address
  * @register_offsets: offsets for each irq number
+ * @write: register write function pointer
  */
 struct crossbar_device {
 	uint int_max;
+	uint safe_map;
+	uint max_crossbar_sources;
 	uint *irq_map;
 	void __iomem *crossbar_base;
 	int *register_offsets;
-	void (*write) (int, int);
+	void (*write)(int, int);
 };
 
 static struct crossbar_device *cb;
@@ -50,11 +59,22 @@ static inline void crossbar_writeb(int irq_no, int cb_no)
 	writeb(cb_no, cb->crossbar_base + cb->register_offsets[irq_no]);
 }
 
+static inline int get_prev_map_irq(int cb_no)
+{
+	int i;
+
+	for (i = cb->int_max - 1; i >= 0; i--)
+		if (cb->irq_map[i] == cb_no)
+			return i;
+
+	return -ENODEV;
+}
+
 static inline int allocate_free_irq(int cb_no)
 {
 	int i;
 
-	for (i = 0; i < cb->int_max; i++) {
+	for (i = cb->int_max - 1; i >= 0; i--) {
 		if (cb->irq_map[i] == IRQ_FREE) {
 			cb->irq_map[i] = cb_no;
 			return i;
@@ -64,19 +84,47 @@ static inline int allocate_free_irq(int cb_no)
 	return -ENODEV;
 }
 
+static inline bool needs_crossbar_write(irq_hw_number_t hw)
+{
+	int cb_no;
+
+	if (hw > GIC_IRQ_START) {
+		cb_no = cb->irq_map[hw - GIC_IRQ_START];
+		if (cb_no != IRQ_RESERVED && cb_no != IRQ_SKIP)
+			return true;
+	}
+
+	return false;
+}
+
 static int crossbar_domain_map(struct irq_domain *d, unsigned int irq,
 			       irq_hw_number_t hw)
 {
+	if (needs_crossbar_write(hw))
 		cb->write(hw - GIC_IRQ_START, cb->irq_map[hw - GIC_IRQ_START]);
+
 	return 0;
 }
 
+/**
+ * crossbar_domain_unmap - unmap a crossbar<->irq connection
+ * @d: domain of irq to unmap
+ * @irq: virq number
+ *
+ * We do not maintain a use count of total number of map/unmap
+ * calls for a particular irq to find out if a irq can be really
+ * unmapped. This is because unmap is called during irq_dispose_mapping(irq),
+ * after which irq is anyways unusable. So an explicit map has to be called
+ * after that.
+ */
 static void crossbar_domain_unmap(struct irq_domain *d, unsigned int irq)
 {
 	irq_hw_number_t hw = irq_get_irq_data(irq)->hwirq;
 
-	if (hw > GIC_IRQ_START)
+	if (needs_crossbar_write(hw)) {
 		cb->irq_map[hw - GIC_IRQ_START] = IRQ_FREE;
+		cb->write(hw - GIC_IRQ_START, cb->safe_map);
+	}
 }
 
 static int crossbar_domain_xlate(struct irq_domain *d,
@@ -85,18 +133,41 @@ static int crossbar_domain_xlate(struct irq_domain *d,
 				 unsigned long *out_hwirq,
 				 unsigned int *out_type)
 {
-	unsigned long ret;
+	int ret;
+	int req_num = intspec[1];
+	int direct_map_num;
+
+	if (req_num >= cb->max_crossbar_sources) {
+		direct_map_num = req_num - cb->max_crossbar_sources;
+		if (direct_map_num < cb->int_max) {
+			ret = cb->irq_map[direct_map_num];
+			if (ret == IRQ_RESERVED || ret == IRQ_SKIP) {
+				/* We use the interrupt num as h/w irq num */
+				ret = direct_map_num;
+				goto found;
+			}
+		}
+
+		pr_err("%s: requested crossbar number %d > max %d\n",
+		       __func__, req_num, cb->max_crossbar_sources);
+		return -EINVAL;
+	}
 
-	ret = allocate_free_irq(intspec[1]);
+	ret = get_prev_map_irq(req_num);
+	if (ret >= 0)
+		goto found;
 
-	if (IS_ERR_VALUE(ret))
+	ret = allocate_free_irq(req_num);
+
+	if (ret < 0)
 		return ret;
 
+found:
 	*out_hwirq = ret + GIC_IRQ_START;
 	return 0;
 }
 
-const struct irq_domain_ops routable_irq_domain_ops = {
+static const struct irq_domain_ops routable_irq_domain_ops = {
 	.map = crossbar_domain_map,
 	.unmap = crossbar_domain_unmap,
 	.xlate = crossbar_domain_xlate
@@ -104,22 +175,36 @@ const struct irq_domain_ops routable_irq_domain_ops = {
 
 static int __init crossbar_of_init(struct device_node *node)
 {
-	int i, size, max, reserved = 0, entry;
+	int i, size, max = 0, reserved = 0, entry;
 	const __be32 *irqsr;
+	int ret = -ENOMEM;
 
 	cb = kzalloc(sizeof(*cb), GFP_KERNEL);
 
 	if (!cb)
-		return -ENOMEM;
+		return ret;
 
 	cb->crossbar_base = of_iomap(node, 0);
 	if (!cb->crossbar_base)
-		goto err1;
+		goto err_cb;
+
+	of_property_read_u32(node, "ti,max-crossbar-sources",
+			     &cb->max_crossbar_sources);
+	if (!cb->max_crossbar_sources) {
+		pr_err("missing 'ti,max-crossbar-sources' property\n");
+		ret = -EINVAL;
+		goto err_base;
+	}
 
 	of_property_read_u32(node, "ti,max-irqs", &max);
-	cb->irq_map = kzalloc(max * sizeof(int), GFP_KERNEL);
+	if (!max) {
+		pr_err("missing 'ti,max-irqs' property\n");
+		ret = -EINVAL;
+		goto err_base;
+	}
+	cb->irq_map = kcalloc(max, sizeof(int), GFP_KERNEL);
 	if (!cb->irq_map)
-		goto err2;
+		goto err_base;
 
 	cb->int_max = max;
 
@@ -137,15 +222,35 @@ static int __init crossbar_of_init(struct device_node *node)
 						   i, &entry);
 			if (entry > max) {
 				pr_err("Invalid reserved entry\n");
-				goto err3;
+				ret = -EINVAL;
+				goto err_irq_map;
 			}
-			cb->irq_map[entry] = 0;
+			cb->irq_map[entry] = IRQ_RESERVED;
 		}
 	}
 
-	cb->register_offsets = kzalloc(max * sizeof(int), GFP_KERNEL);
+	/* Skip irqs hardwired to bypass the crossbar */
+	irqsr = of_get_property(node, "ti,irqs-skip", &size);
+	if (irqsr) {
+		size /= sizeof(__be32);
+
+		for (i = 0; i < size; i++) {
+			of_property_read_u32_index(node,
+						   "ti,irqs-skip",
+						   i, &entry);
+			if (entry > max) {
+				pr_err("Invalid skip entry\n");
+				ret = -EINVAL;
+				goto err_irq_map;
+			}
+			cb->irq_map[entry] = IRQ_SKIP;
+		}
+	}
+
+
+	cb->register_offsets = kcalloc(max, sizeof(int), GFP_KERNEL);
 	if (!cb->register_offsets)
-		goto err3;
+		goto err_irq_map;
 
 	of_property_read_u32(node, "ti,reg-size", &size);
 
@@ -161,7 +266,8 @@ static int __init crossbar_of_init(struct device_node *node)
 		break;
 	default:
 		pr_err("Invalid reg-size property\n");
-		goto err4;
+		ret = -EINVAL;
+		goto err_reg_offset;
 		break;
 	}
 
@@ -170,25 +276,37 @@ static int __init crossbar_of_init(struct device_node *node)
 	 * reserved irqs. so find and store the offsets once.
 	 */
 	for (i = 0; i < max; i++) {
-		if (!cb->irq_map[i])
+		if (cb->irq_map[i] == IRQ_RESERVED)
 			continue;
 
 		cb->register_offsets[i] = reserved;
 		reserved += size;
 	}
 
+	of_property_read_u32(node, "ti,irqs-safe-map", &cb->safe_map);
+	/* Initialize the crossbar with safe map to start with */
+	for (i = 0; i < max; i++) {
+		if (cb->irq_map[i] == IRQ_RESERVED ||
+		    cb->irq_map[i] == IRQ_SKIP)
+			continue;
+
+		cb->write(i, cb->safe_map);
+	}
+
 	register_routable_domain_ops(&routable_irq_domain_ops);
 	return 0;
 
-err4:
+err_reg_offset:
 	kfree(cb->register_offsets);
-err3:
+err_irq_map:
 	kfree(cb->irq_map);
-err2:
+err_base:
 	iounmap(cb->crossbar_base);
-err1:
+err_cb:
 	kfree(cb);
-	return -ENOMEM;
+
+	cb = NULL;
+	return ret;
 }
 
 static const struct of_device_id crossbar_match[] __initconst = {