Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq core updates from Thomas Gleixner:
 "Managerial summary:

  Core code:
   - final removal of IRQF_DISABLED
   - new state save/restore functions for virtualization support
   - wakeup support for stacked irqdomains
   - new function to solve the netpoll synchronization problem

 irqchips:
   - new driver for STi based devices
   - new driver for Vybrid MSCM
   - massive cleanup of the GIC driver by moving the GIC-addons to
     stacked irqdomains
   - the usual pile of fixes and updates to the various chip drivers"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
  irqchip: GICv3: Add support for irq_[get, set]_irqchip_state()
  irqchip: GIC: Add support for irq_[get, set]_irqchip_state()
  genirq: Allow the irqchip state of an IRQ to be save/restored
  genirq: MSI: Fix freeing of unallocated MSI
  irqchip: renesas-irqc: Add wake-up support
  irqchip: armada-370-xp: Allow using wakeup source
  irqchip: mips-gic: Add new functions to start/stop the GIC counter
  irqchip: tegra: Add Tegra210 support
  irqchip: digicolor: Move digicolor_set_gc to init section
  irqchip: renesas-irqc: Add functional clock to bindings
  irqchip: renesas-irqc: Add minimal runtime PM support
  irqchip: renesas-irqc: Add more register documentation
  DT: exynos: update PMU binding
  ARM: exynos4/5: convert pmu wakeup to stacked domains
  irqchip: gic: Don't complain in gic_get_cpumask() if UP system
  ARM: zynq: switch from gic_arch_extn to gic_set_irqchip_flags
  ARM: ux500: switch from gic_arch_extn to gic_set_irqchip_flags
  ARM: shmobile: remove use of gic_arch_extn.irq_set_wake
  irqchip: gic: Add an entry point to set up irqchip flags
  ARM: omap: convert wakeupgen to stacked domains
  ...

Documentation/devicetree/bindings/arm/freescale/fsl,vf610-mscm-cpucfg.txt

+Freescale Vybrid Miscellaneous System Control - CPU Configuration
+
+The MSCM IP contains multiple sub modules, this binding describes the first
+block of registers which contains CPU configuration information.
+
+Required properties:
+- compatible:	"fsl,vf610-mscm-cpucfg", "syscon"
+- reg:		the register range of the MSCM CPU configuration registers
+
+Example:
+	mscm_cpucfg: cpucfg@40001000 {
+		compatible = "fsl,vf610-mscm-cpucfg", "syscon";
+		reg = <0x40001000 0x800>;
+	}

Documentation/devicetree/bindings/arm/freescale/fsl,vf610-mscm-ir.txt

+Freescale Vybrid Miscellaneous System Control - Interrupt Router
+
+The MSCM IP contains multiple sub modules, this binding describes the second
+block of registers which control the interrupt router. The interrupt router
+allows to configure the recipient of each peripheral interrupt. Furthermore
+it controls the directed processor interrupts. The module is available in all
+Vybrid SoC's but is only really useful in dual core configurations (VF6xx
+which comes with a Cortex-A5/Cortex-M4 combination).
+
+Required properties:
+- compatible:		"fsl,vf610-mscm-ir"
+- reg:			the register range of the MSCM Interrupt Router
+- fsl,cpucfg:		The handle to the MSCM CPU configuration node, required
+			to get the current CPU ID
+- interrupt-controller:	Identifies the node as an interrupt controller
+- #interrupt-cells:	Two cells, interrupt number and cells.
+			The hardware interrupt number according to interrupt
+			assignment of the interrupt router is required.
+			Flags get passed only when using GIC as parent. Flags
+			encoding as documented by the GIC bindings.
+- interrupt-parent:	Should be the phandle for the interrupt controller of
+			the CPU the device tree is intended to be used on. This
+			is either the node of the GIC or NVIC controller.
+
+Example:
+	mscm_ir: interrupt-controller@40001800 {
+		compatible = "fsl,vf610-mscm-ir";
+		reg = <0x40001800 0x400>;
+		fsl,cpucfg = <&mscm_cpucfg>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		interrupt-parent = <&intc>;
+	}

Documentation/devicetree/bindings/arm/gic.txt

@@ -56,11 +56,6 @@ Optional
   regions, used when the GIC doesn't have banked registers. The offset is
   cpu-offset * cpu-nr.
 
-- arm,routable-irqs : Total number of gic irq inputs which are not directly
-		  connected from the peripherals, but are routed dynamically
-		  by a crossbar/multiplexer preceding the GIC. The GIC irq
-		  input line is assigned dynamically when the corresponding
-		  peripheral's crossbar line is mapped.
 Example:
 
 	intc: interrupt-controller@fff11000 {
@@ -68,7 +63,6 @@ Example:
 		#interrupt-cells = <3>;
 		#address-cells = <1>;
 		interrupt-controller;
-		arm,routable-irqs = <160>;
 		reg = <0xfff11000 0x1000>,
 		      <0xfff10100 0x100>;
 	};

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

@@ -9,7 +9,9 @@ inputs.
 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.
+- interrupt-controller: indicates that this block is an interrupt controller.
+- interrupt-parent: the interrupt controller this block is connected to.
+- ti,max-irqs: Total number of irqs available at the parent 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.
@@ -27,13 +29,13 @@ Optional properties:
   when the interrupt controller irq is unused (when not provided, default is 0)
 
 Examples:
-		crossbar_mpu: @4a020000 {
+		crossbar_mpu: crossbar@4a002a48 {
 			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-reserved = <0 1 2 3 5 6 131 132>;
 			ti,irqs-skip = <10 133 139 140>;
 		};
 
@@ -44,10 +46,6 @@ 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 {
@@ -55,9 +53,3 @@ Example:
 		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>;
-		...
-	};

Documentation/devicetree/bindings/arm/samsung/pmu.txt

@@ -29,10 +29,27 @@ Properties:
  - clocks : list of phandles and specifiers to all input clocks listed in
 		clock-names property.
 
+Optional properties:
+
+Some PMUs are capable of behaving as an interrupt controller (mostly
+to wake up a suspended PMU). In which case, they can have the
+following properties:
+
+- interrupt-controller: indicate that said PMU is an interrupt controller
+
+- #interrupt-cells: must be identical to the that of the parent interrupt
+  controller.
+
+- interrupt-parent: a phandle indicating which interrupt controller
+  this PMU signals interrupts to.
+
 Example :
 pmu_system_controller: system-controller@10040000 {
 	compatible = "samsung,exynos5250-pmu", "syscon";
 	reg = <0x10040000 0x5000>;
+	interrupt-controller;
+	#interrupt-cells = <3>;
+	interrupt-parent = <&gic>;
 	#clock-cells = <1>;
 	clock-names = "clkout0", "clkout1", "clkout2", "clkout3",
 			"clkout4", "clkout8", "clkout9";

Documentation/devicetree/bindings/interrupt-controller/nvidia,tegra-ictlr.txt

+NVIDIA Legacy Interrupt Controller
+
+All Tegra SoCs contain a legacy interrupt controller that routes
+interrupts to the GIC, and also serves as a wakeup source. It is also
+referred to as "ictlr", hence the name of the binding.
+
+The HW block exposes a number of interrupt controllers, each
+implementing a set of 32 interrupts.
+
+Required properties:
+
+- compatible : should be: "nvidia,tegra<chip>-ictlr". The LIC on
+  subsequent SoCs remained backwards-compatible with Tegra30, so on
+  Tegra generations later than Tegra30 the compatible value should
+  include "nvidia,tegra30-ictlr".	
+- reg : Specifies base physical address and size of the registers.
+  Each controller must be described separately (Tegra20 has 4 of them,
+  whereas Tegra30 and later have 5"  
+- interrupt-controller : Identifies the node as an interrupt controller.
+- #interrupt-cells : Specifies the number of cells needed to encode an
+  interrupt source. The value must be 3.
+- interrupt-parent : a phandle to the GIC these interrupts are routed
+  to.
+
+Notes:
+
+- Because this HW ultimately routes interrupts to the GIC, the
+  interrupt specifier must be that of the GIC.
+- Only SPIs can use the ictlr as an interrupt parent. SGIs and PPIs
+  are explicitly forbidden.
+
+Example:
+
+	ictlr: interrupt-controller@60004000 {
+		compatible = "nvidia,tegra20-ictlr", "nvidia,tegra-ictlr";
+		reg = <0x60004000 64>,
+		      <0x60004100 64>,
+		      <0x60004200 64>,
+		      <0x60004300 64>;
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&intc>;
+	};

Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.txt

@@ -4,7 +4,7 @@ Required properties:
 
 - compatible: has to be "renesas,irqc-<soctype>", "renesas,irqc" as fallback.
   Examples with soctypes are:
-    - "renesas,irqc-r8a73a4" (R-Mobile AP6)
+    - "renesas,irqc-r8a73a4" (R-Mobile APE6)
     - "renesas,irqc-r8a7790" (R-Car H2)
     - "renesas,irqc-r8a7791" (R-Car M2-W)
     - "renesas,irqc-r8a7792" (R-Car V2H)
@@ -12,6 +12,7 @@ Required properties:
     - "renesas,irqc-r8a7794" (R-Car E2)
 - #interrupt-cells: has to be <2>: an interrupt index and flags, as defined in
   interrupts.txt in this directory
+- clocks: Must contain a reference to the functional clock.
 
 Optional properties:
 
@@ -29,4 +30,5 @@ Example:
 			     <0 1 IRQ_TYPE_LEVEL_HIGH>,
 			     <0 2 IRQ_TYPE_LEVEL_HIGH>,
 			     <0 3 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp4_clks R8A7790_CLK_IRQC>;
 	};

Documentation/devicetree/bindings/interrupt-controller/st,sti-irq-syscfg.txt

+STMicroelectronics STi System Configuration Controlled IRQs
+-----------------------------------------------------------
+
+On STi based systems; External, CTI (Core Sight), PMU (Performance Management),
+and PL310 L2 Cache IRQs are controlled using System Configuration registers.
+This driver is used to unmask them prior to use.
+
+Required properties:
+- compatible	: Should be set to one of:
+			"st,stih415-irq-syscfg"
+			"st,stih416-irq-syscfg"
+			"st,stih407-irq-syscfg"
+			"st,stid127-irq-syscfg"
+- st,syscfg	: Phandle to Cortex-A9 IRQ system config registers
+- st,irq-device	: Array of IRQs to enable - should be 2 in length
+- st,fiq-device	: Array of FIQs to enable - should be 2 in length
+
+Optional properties:
+- st,invert-ext	: External IRQs can be inverted at will.  This property inverts
+		  these IRQs using bitwise logic.  A number of defines have been
+		  provided for convenience:
+			ST_IRQ_SYSCFG_EXT_1_INV
+			ST_IRQ_SYSCFG_EXT_2_INV
+			ST_IRQ_SYSCFG_EXT_3_INV
+Example:
+
+irq-syscfg {
+	compatible    = "st,stih416-irq-syscfg";
+	st,syscfg     = <&syscfg_cpu>;
+	st,irq-device = <ST_IRQ_SYSCFG_PMU_0>,
+			<ST_IRQ_SYSCFG_PMU_1>;
+	st,fiq-device = <ST_IRQ_SYSCFG_DISABLED>,
+			<ST_IRQ_SYSCFG_DISABLED>;
+	st,invert-ext = <(ST_IRQ_SYSCFG_EXT_1_INV | ST_IRQ_SYSCFG_EXT_3_INV)>;
+};

Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu

+TI OMAP4 Wake-up Generator
+
+All TI OMAP4/5 (and their derivatives) an interrupt controller that
+routes interrupts to the GIC, and also serves as a wakeup source. It
+is also referred to as "WUGEN-MPU", hence the name of the binding.
+
+Reguired properties:
+
+- compatible : should contain at least "ti,omap4-wugen-mpu" or
+  "ti,omap5-wugen-mpu"
+- reg : Specifies base physical address and size of the registers.
+- interrupt-controller : Identifies the node as an interrupt controller.
+- #interrupt-cells : Specifies the number of cells needed to encode an
+  interrupt source. The value must be 3.
+- interrupt-parent : a phandle to the GIC these interrupts are routed
+  to.
+
+Notes:
+
+- Because this HW ultimately routes interrupts to the GIC, the
+  interrupt specifier must be that of the GIC.
+- Only SPIs can use the WUGEN as an interrupt parent. SGIs and PPIs
+  are explicitly forbiden.
+
+Example:
+
+       wakeupgen: interrupt-controller@48281000 {
+               compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
+               interrupt-controller;
+               #interrupt-cells = <3>;
+               reg = <0x48281000 0x1000>;
+               interrupt-parent = <&gic>;
+       };

Documentation/scsi/ncr53c8xx.txt

@@ -786,7 +786,6 @@ port address 0x1400.
         irqm:1     same as initial settings (assumed BIOS settings)
         irqm:2     always totem pole
         irqm:0x10  driver will not use IRQF_SHARED flag when requesting irq
-        irqm:0x20  driver will not use IRQF_DISABLED flag when requesting irq
 
     (Bits 0x10 and 0x20 can be combined with hardware irq mode option)
 
@@ -1231,30 +1230,6 @@ they only refer to system buffers that are well aligned. So, a work around
 may only be needed under Linux when a scatter/gather list is not used and 
 when the SCSI DATA IN phase is reentered after a phase mismatch.
 
-14.5 IRQ sharing problems
-
-When an IRQ is shared by devices that are handled by different drivers, it 
-may happen that one driver complains about the request of the IRQ having 
-failed. Inder Linux-2.0, this may be due to one driver having requested the 
-IRQ using the IRQF_DISABLED flag but some other having requested the same IRQ
-without this flag. Under both Linux-2.0 and linux-2.2, this may be caused by 
-one driver not having requested the IRQ with the IRQF_SHARED flag.
-
-By default, the ncr53c8xx and sym53c8xx drivers request IRQs with both the 
-IRQF_DISABLED and the IRQF_SHARED flag under Linux-2.0 and with only the IRQF_SHARED
-flag under Linux-2.2.
-
-Under Linux-2.0, you can disable use of IRQF_DISABLED flag from the boot
-command line by using the following option:
-
-     ncr53c8xx=irqm:0x20   (for the generic ncr53c8xx driver)
-     sym53c8xx=irqm:0x20   (for the sym53c8xx driver)
-
-If this does not fix the problem, then you may want to check how all other 
-drivers are requesting the IRQ and report the problem. Note that if at least 
-a single driver does not request the IRQ with the IRQF_SHARED flag (share IRQ),
-then the request of the IRQ obviously will not succeed for all the drivers.
-
 15. SCSI problem troubleshooting
 
 15.1 Problem tracking

Documentation/scsi/tmscsim.txt

@@ -107,10 +107,6 @@ produced errors and started to corrupt my disks. So don't do that! A 37.50
 MHz PCI bus works for me, though, but I don't recommend using higher clocks
 than the 33.33 MHz being in the PCI spec.
 
-If you want to share the IRQ with another device and the driver refuses to
-do so, you might succeed with changing the DC390_IRQ type in tmscsim.c to 
-IRQF_SHARED | IRQF_DISABLED.
-
 
 3.Features
 ----------

arch/arm/boot/dts/am4372.dtsi

@@ -15,7 +15,7 @@
 
 / {
 	compatible = "ti,am4372", "ti,am43";
-	interrupt-parent = <&gic>;
+	interrupt-parent = <&wakeupgen>;
 
 
 	aliases {
@@ -48,6 +48,15 @@ gic: interrupt-controller@48241000 {
 		#interrupt-cells = <3>;
 		reg = <0x48241000 0x1000>,
 		      <0x48240100 0x0100>;
+		interrupt-parent = <&gic>;
+	};
+
+	wakeupgen: interrupt-controller@48281000 {
+		compatible = "ti,omap4-wugen-mpu";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		reg = <0x48281000 0x1000>;
+		interrupt-parent = <&gic>;
 	};
 
 	l2-cache-controller@48242000 {

arch/arm/boot/dts/am437x-gp-evm.dts

@@ -352,7 +352,6 @@ tps65218: tps65218@24 {
 		reg = <0x24>;
 		compatible = "ti,tps65218";
 		interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* NMIn */
-		interrupt-parent = <&gic>;
 		interrupt-controller;
 		#interrupt-cells = <2>;
 

arch/arm/boot/dts/am437x-sk-evm.dts

@@ -392,7 +392,6 @@ &i2c0 {
 	tps@24 {
 		compatible = "ti,tps65218";
 		reg = <0x24>;
-		interrupt-parent = <&gic>;
 		interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
 		interrupt-controller;
 		#interrupt-cells = <2>;

arch/arm/boot/dts/am43x-epos-evm.dts

@@ -369,7 +369,6 @@ tps65218: tps65218@24 {
 		reg = <0x24>;
 		compatible = "ti,tps65218";
 		interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* NMIn */
-		interrupt-parent = <&gic>;
 		interrupt-controller;
 		#interrupt-cells = <2>;
 

arch/arm/boot/dts/am57xx-beagle-x15.dts

@@ -454,7 +454,6 @@ &i2c3 {
 	mcp_rtc: rtc@6f {
 		compatible = "microchip,mcp7941x";
 		reg = <0x6f>;
-		interrupt-parent = <&gic>;
 		interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_LOW>;  /* IRQ_SYS_1N */
 
 		pinctrl-names = "default";
@@ -477,7 +476,7 @@ &cpu0 {
 
 &uart3 {
 	status = "okay";
-	interrupts-extended = <&gic GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
+	interrupts-extended = <&crossbar_mpu GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
 			      <&dra7_pmx_core 0x248>;
 
 	pinctrl-names = "default";

arch/arm/boot/dts/dra7-evm.dts

@@ -444,7 +444,7 @@ &uart1 {
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart1_pins>;
-	interrupts-extended = <&gic GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
+	interrupts-extended = <&crossbar_mpu GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
 			      <&dra7_pmx_core 0x3e0>;
 };
 

arch/arm/boot/dts/dra7.dtsi

@@ -13,14 +13,13 @@
 #include "skeleton.dtsi"
 
 #define MAX_SOURCES 400
-#define DIRECT_IRQ(irq) (MAX_SOURCES + irq)
 
 / {
 	#address-cells = <1>;
 	#size-cells = <1>;
 
 	compatible = "ti,dra7xx";
-	interrupt-parent = <&gic>;
+	interrupt-parent = <&crossbar_mpu>;
 
 	aliases {
 		i2c0 = &i2c1;
@@ -50,18 +49,27 @@ timer {
 			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>;
+		interrupt-parent = <&gic>;
 	};
 
 	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>,
 		      <0x48216000 0x2000>;
 		interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
+		interrupt-parent = <&gic>;
+	};
+
+	wakeupgen: interrupt-controller@48281000 {
+		compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		reg = <0x48281000 0x1000>;
+		interrupt-parent = <&gic>;
 	};
 
 	/*
@@ -91,8 +99,8 @@ ocp {
 		ti,hwmods = "l3_main_1", "l3_main_2";
 		reg = <0x44000000 0x1000000>,
 		      <0x45000000 0x1000>;
-		interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI DIRECT_IRQ(10) IRQ_TYPE_LEVEL_HIGH>;
+		interrupts-extended = <&crossbar_mpu GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
+				      <&wakeupgen GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
 
 		prm: prm@4ae06000 {
 			compatible = "ti,dra7-prm";
@@ -344,7 +352,7 @@ gpio8: gpio@48053000 {
 		uart1: serial@4806a000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806a000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts-extended = <&crossbar_mpu GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart1";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -355,7 +363,7 @@ uart1: serial@4806a000 {
 		uart2: serial@4806c000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806c000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart2";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -366,7 +374,7 @@ uart2: serial@4806c000 {
 		uart3: serial@48020000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48020000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart3";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -377,7 +385,7 @@ uart3: serial@48020000 {
 		uart4: serial@4806e000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806e000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart4";
 			clock-frequency = <48000000>;
                         status = "disabled";
@@ -388,7 +396,7 @@ uart4: serial@4806e000 {
 		uart5: serial@48066000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48066000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart5";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -399,7 +407,7 @@ uart5: serial@48066000 {
 		uart6: serial@48068000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48068000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart6";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -410,7 +418,7 @@ uart6: serial@48068000 {
 		uart7: serial@48420000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48420000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart7";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -419,7 +427,7 @@ uart7: serial@48420000 {
 		uart8: serial@48422000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48422000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart8";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -428,7 +436,7 @@ uart8: serial@48422000 {
 		uart9: serial@48424000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48424000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 220 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 220 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart9";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -437,7 +445,7 @@ uart9: serial@48424000 {
 		uart10: serial@4ae2b000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4ae2b000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart10";
 			clock-frequency = <48000000>;
 			status = "disabled";
@@ -1335,9 +1343,12 @@ atl: atl@4843c000 {
 			status = "disabled";
 		};
 
-		crossbar_mpu: crossbar@4a020000 {
+		crossbar_mpu: crossbar@4a002a48 {
 			compatible = "ti,irq-crossbar";
 			reg = <0x4a002a48 0x130>;
+			interrupt-controller;
+			interrupt-parent = <&wakeupgen>;
+			#interrupt-cells = <3>;
 			ti,max-irqs = <160>;
 			ti,max-crossbar-sources = <MAX_SOURCES>;
 			ti,reg-size = <2>;

arch/arm/boot/dts/dra72-evm.dts

@@ -158,7 +158,6 @@ tps65917: tps65917@58 {
 		pinctrl-0 = <&tps65917_pins_default>;
 
 		interrupts = <GIC_SPI 2 IRQ_TYPE_NONE>;  /* IRQ_SYS_1N */
-		interrupt-parent = <&gic>;
 		interrupt-controller;
 		#interrupt-cells = <2>;
 

arch/arm/boot/dts/dra72x.dtsi

@@ -25,6 +25,7 @@ cpu0: cpu@0 {
 
 	pmu {
 		compatible = "arm,cortex-a15-pmu";
-		interrupts = <GIC_SPI DIRECT_IRQ(131) IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-parent = <&wakeupgen>;
+		interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>;
 	};
 };

arch/arm/boot/dts/dra74x.dtsi

@@ -41,8 +41,9 @@ cpu@1 {
 
 	pmu {
 		compatible = "arm,cortex-a15-pmu";
-		interrupts = <GIC_SPI DIRECT_IRQ(131) IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI DIRECT_IRQ(132) IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-parent = <&wakeupgen>;
+		interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 132 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
 	ocp {

arch/arm/boot/dts/exynos3250.dtsi

@@ -131,6 +131,9 @@ sys_reg: syscon@10010000 {
 		pmu_system_controller: system-controller@10020000 {
 			compatible = "samsung,exynos3250-pmu", "syscon";
 			reg = <0x10020000 0x4000>;
+			interrupt-controller;
+			#interrupt-cells = <3>;
+			interrupt-parent = <&gic>;
 		};
 
 		mipi_phy: video-phy@10020710 {
@@ -185,6 +188,7 @@ rtc: rtc@10070000 {
 			compatible = "samsung,exynos3250-rtc";
 			reg = <0x10070000 0x100>;
 			interrupts = <0 73 0>, <0 74 0>;
+			interrupt-parent = <&pmu_system_controller>;
 			status = "disabled";
 		};
 

arch/arm/boot/dts/exynos4.dtsi

@@ -154,6 +154,9 @@ sys_reg: syscon@10010000 {
 	pmu_system_controller: system-controller@10020000 {
 		compatible = "samsung,exynos4210-pmu", "syscon";
 		reg = <0x10020000 0x4000>;
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
 	};
 
 	dsi_0: dsi@11C80000 {
@@ -266,6 +269,7 @@ watchdog@10060000 {
 	rtc@10070000 {
 		compatible = "samsung,s3c6410-rtc";
 		reg = <0x10070000 0x100>;
+		interrupt-parent = <&pmu_system_controller>;
 		interrupts = <0 44 0>, <0 45 0>;
 		clocks = <&clock CLK_RTC>;
 		clock-names = "rtc";

arch/arm/boot/dts/exynos5250.dtsi

@@ -205,6 +205,9 @@ pmu_system_controller: system-controller@10040000 {
 		clock-names = "clkout16";
 		clocks = <&clock CLK_FIN_PLL>;
 		#clock-cells = <1>;
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
 	};
 
 	sysreg_system_controller: syscon@10050000 {
@@ -241,6 +244,7 @@ mfc: codec@11000000 {
 	rtc: rtc@101E0000 {
 		clocks = <&clock CLK_RTC>;
 		clock-names = "rtc";
+		interrupt-parent = <&pmu_system_controller>;
 		status = "disabled";
 	};
 

arch/arm/boot/dts/exynos5420.dtsi

@@ -327,6 +327,7 @@ pinctrl_4: pinctrl@03860000 {
 	rtc: rtc@101E0000 {
 		clocks = <&clock CLK_RTC>;
 		clock-names = "rtc";
+		interrupt-parent = <&pmu_system_controller>;
 		status = "disabled";
 	};
 
@@ -770,6 +771,9 @@ pmu_system_controller: system-controller@10040000 {
 		clock-names = "clkout16";
 		clocks = <&clock CLK_FIN_PLL>;
 		#clock-cells = <1>;
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
 	};
 
 	sysreg_system_controller: syscon@10050000 {

arch/arm/boot/dts/omap4-duovero.dtsi

@@ -173,14 +173,12 @@ &i2c1 {
 	twl: twl@48 {
 		reg = <0x48>;
 		interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;		/* IRQ_SYS_1N cascaded to gic */
-		interrupt-parent = <&gic>;
 	};
 
 	twl6040: twl@4b {
 		compatible = "ti,twl6040";
 		reg = <0x4b>;
 		interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>;		/* IRQ_SYS_2N cascaded to gic */
-		interrupt-parent = <&gic>;
 		ti,audpwron-gpio = <&gpio6 0 GPIO_ACTIVE_HIGH>;		/* gpio_160 */
 
 		vio-supply = <&v1v8>;

arch/arm/boot/dts/omap4-panda-common.dtsi

@@ -372,7 +372,6 @@ twl: twl@48 {
 		reg = <0x48>;
 		/* IRQ# = 7 */
 		interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_1N cascaded to gic */
-		interrupt-parent = <&gic>;
 	};
 
 	twl6040: twl@4b {
@@ -384,7 +383,6 @@ twl6040: twl@4b {
 
 		/* IRQ# = 119 */
 		interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_2N cascaded to gic */
-		interrupt-parent = <&gic>;
 		ti,audpwron-gpio = <&gpio4 31 GPIO_ACTIVE_HIGH>;  /* gpio line 127 */
 
 		vio-supply = <&v1v8>;
@@ -479,17 +477,17 @@ &twl_usb_comparator {
 };
 
 &uart2 {
-	interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH
+	interrupts-extended = <&wakeupgen GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH
 			       &omap4_pmx_core OMAP4_UART2_RX>;
 };
 
 &uart3 {
-	interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
+	interrupts-extended = <&wakeupgen GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
 			       &omap4_pmx_core OMAP4_UART3_RX>;
 };
 
 &uart4 {
-	interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH
+	interrupts-extended = <&wakeupgen GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH
 			       &omap4_pmx_core OMAP4_UART4_RX>;
 };
 

arch/arm/boot/dts/omap4-sdp.dts

@@ -363,7 +363,6 @@ twl: twl@48 {
 		reg = <0x48>;
 		/* SPI = 0, IRQ# = 7, 4 = active high level-sensitive */
 		interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_1N cascaded to gic */
-		interrupt-parent = <&gic>;
 	};
 
 	twl6040: twl@4b {
@@ -375,7 +374,6 @@ twl6040: twl@4b {
 
 		/* SPI = 0, IRQ# = 119, 4 = active high level-sensitive */
 		interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_2N cascaded to gic */
-		interrupt-parent = <&gic>;
 		ti,audpwron-gpio = <&gpio4 31 0>;  /* gpio line 127 */
 
 		vio-supply = <&v1v8>;
@@ -570,21 +568,21 @@ &keypad {
 };
 
 &uart2 {
-	interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH
+	interrupts-extended = <&wakeupgen GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH
 			       &omap4_pmx_core OMAP4_UART2_RX>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart2_pins>;
 };
 
 &uart3 {
-	interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
+	interrupts-extended = <&wakeupgen GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
 			       &omap4_pmx_core OMAP4_UART3_RX>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart3_pins>;
 };
 
 &uart4 {
-	interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH
+	interrupts-extended = <&wakeupgen GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH
 			       &omap4_pmx_core OMAP4_UART4_RX>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart4_pins>;

arch/arm/boot/dts/omap4-var-som-om44.dtsi

@@ -185,7 +185,6 @@ twl: twl@48 {
 		reg = <0x48>;
 		/* SPI = 0, IRQ# = 7, 4 = active high level-sensitive */
 		interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_1N cascaded to gic */
-		interrupt-parent = <&gic>;
 	};
 
 	twl6040: twl@4b {
@@ -197,7 +196,6 @@ twl6040: twl@4b {
 
 		/* SPI = 0, IRQ# = 119, 4 = active high level-sensitive */
 		interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_2N cascaded to gic */
-		interrupt-parent = <&gic>;
 		ti,audpwron-gpio = <&gpio6 22 0>; /* gpio 182 */
 
 		vio-supply = <&v1v8>;

arch/arm/boot/dts/omap4.dtsi

@@ -14,7 +14,7 @@
 
 / {
 	compatible = "ti,omap4430", "ti,omap4";
-	interrupt-parent = <&gic>;
+	interrupt-parent = <&wakeupgen>;
 
 	aliases {
 		i2c0 = &i2c1;
@@ -56,6 +56,7 @@ gic: interrupt-controller@48241000 {
 		#interrupt-cells = <3>;
 		reg = <0x48241000 0x1000>,
 		      <0x48240100 0x0100>;
+		interrupt-parent = <&gic>;
 	};
 
 	L2: l2-cache-controller@48242000 {
@@ -70,6 +71,15 @@ local-timer@48240600 {
 		clocks = <&mpu_periphclk>;
 		reg = <0x48240600 0x20>;
 		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_HIGH)>;
+		interrupt-parent = <&gic>;
+	};
+
+	wakeupgen: interrupt-controller@48281000 {
+		compatible = "ti,omap4-wugen-mpu";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		reg = <0x48281000 0x1000>;
+		interrupt-parent = <&gic>;
 	};
 
 	/*
@@ -319,7 +329,7 @@ uart1: serial@4806a000 {
 		uart2: serial@4806c000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806c000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart2";
 			clock-frequency = <48000000>;
 		};
@@ -327,7 +337,7 @@ uart2: serial@4806c000 {
 		uart3: serial@48020000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48020000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart3";
 			clock-frequency = <48000000>;
 		};
@@ -335,7 +345,7 @@ uart3: serial@48020000 {
 		uart4: serial@4806e000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806e000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart4";
 			clock-frequency = <48000000>;
 		};

arch/arm/boot/dts/omap5-cm-t54.dts

@@ -412,7 +412,6 @@ at24@50 {
 	palmas: palmas@48 {
 		compatible = "ti,palmas";
 		interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* IRQ_SYS_1N */
-		interrupt-parent = <&gic>;
 		reg = <0x48>;
 		interrupt-controller;
 		#interrupt-cells = <2>;

arch/arm/boot/dts/omap5-uevm.dts

@@ -311,7 +311,6 @@ &i2c1 {
 	palmas: palmas@48 {
 		compatible = "ti,palmas";
 		interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* IRQ_SYS_1N */
-		interrupt-parent = <&gic>;
 		reg = <0x48>;
 		interrupt-controller;
 		#interrupt-cells = <2>;
@@ -521,7 +520,6 @@ twl6040: twl@4b {
 		pinctrl-0 = <&twl6040_pins>;
 
 		interrupts = <GIC_SPI 119 IRQ_TYPE_NONE>; /* IRQ_SYS_2N cascaded to gic */
-		interrupt-parent = <&gic>;
 		ti,audpwron-gpio = <&gpio5 13 0>;  /* gpio line 141 */
 
 		vio-supply = <&smps7_reg>;

arch/arm/boot/dts/omap5.dtsi

@@ -18,7 +18,7 @@ / {
 	#size-cells = <1>;
 
 	compatible = "ti,omap5";
-	interrupt-parent = <&gic>;
+	interrupt-parent = <&wakeupgen>;
 
 	aliases {
 		i2c0 = &i2c1;
@@ -79,6 +79,7 @@ timer {
 			     <GIC_PPI 14 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 11 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 10 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_LOW)>;
+		interrupt-parent = <&gic>;
 	};
 
 	pmu {
@@ -95,6 +96,15 @@ gic: interrupt-controller@48211000 {
 		      <0x48212000 0x1000>,
 		      <0x48214000 0x2000>,
 		      <0x48216000 0x2000>;
+		interrupt-parent = <&gic>;
+	};
+
+	wakeupgen: interrupt-controller@48281000 {
+		compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		reg = <0x48281000 0x1000>;
+		interrupt-parent = <&gic>;
 	};
 
 	/*
@@ -458,7 +468,7 @@ mcspi4: spi@480ba000 {
 		uart1: serial@4806a000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806a000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart1";
 			clock-frequency = <48000000>;
 		};
@@ -466,7 +476,7 @@ uart1: serial@4806a000 {
 		uart2: serial@4806c000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806c000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart2";
 			clock-frequency = <48000000>;
 		};
@@ -474,7 +484,7 @@ uart2: serial@4806c000 {
 		uart3: serial@48020000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48020000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart3";
 			clock-frequency = <48000000>;
 		};
@@ -482,7 +492,7 @@ uart3: serial@48020000 {
 		uart4: serial@4806e000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x4806e000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart4";
 			clock-frequency = <48000000>;
 		};
@@ -490,7 +500,7 @@ uart4: serial@4806e000 {
 		uart5: serial@48066000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48066000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart5";
 			clock-frequency = <48000000>;
 		};
@@ -498,7 +508,7 @@ uart5: serial@48066000 {
 		uart6: serial@48068000 {
 			compatible = "ti,omap4-uart";
 			reg = <0x48068000 0x100>;
-			interrupts-extended = <&gic GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
+			interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "uart6";
 			clock-frequency = <48000000>;
 		};
@@ -883,14 +893,12 @@ usbhshost: usbhshost@4a064000 {
 			usbhsohci: ohci@4a064800 {
 				compatible = "ti,ohci-omap3";
 				reg = <0x4a064800 0x400>;
-				interrupt-parent = <&gic>;
 				interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
 			};
 
 			usbhsehci: ehci@4a064c00 {
 				compatible = "ti,ehci-omap";
 				reg = <0x4a064c00 0x400>;
-				interrupt-parent = <&gic>;
 				interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
 			};
 		};

arch/arm/boot/dts/tegra114.dtsi

@@ -8,7 +8,7 @@
 
 / {
 	compatible = "nvidia,tegra114";
-	interrupt-parent = <&gic>;
+	interrupt-parent = <&lic>;
 
 	host1x@50000000 {
 		compatible = "nvidia,tegra114-host1x", "simple-bus";
@@ -134,6 +134,19 @@ gic: interrupt-controller@50041000 {
 		      <0x50046000 0x2000>;
 		interrupts = <GIC_PPI 9
 			(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+		interrupt-parent = <&gic>;
+	};
+
+	lic: interrupt-controller@60004000 {
+		compatible = "nvidia,tegra114-ictlr", "nvidia,tegra30-ictlr";
+		reg = <0x60004000 0x100>,
+		      <0x60004100 0x50>,
+		      <0x60004200 0x50>,
+		      <0x60004300 0x50>,
+		      <0x60004400 0x50>;
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
 	};
 
 	timer@60005000 {
@@ -766,5 +779,6 @@ timer {
 				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
 			<GIC_PPI 10
 				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+		interrupt-parent = <&gic>;
 	};
 };

arch/arm/boot/dts/tegra124.dtsi

@@ -10,7 +10,7 @@
 
 / {
 	compatible = "nvidia,tegra124";
-	interrupt-parent = <&gic>;
+	interrupt-parent = <&lic>;
 	#address-cells = <2>;
 	#size-cells = <2>;
 
@@ -173,6 +173,7 @@ gic: interrupt-controller@0,50041000 {
 		      <0x0 0x50046000 0x0 0x2000>;
 		interrupts = <GIC_PPI 9
 			(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+		interrupt-parent = <&gic>;
 	};
 
 	gpu@0,57000000 {
@@ -190,6 +191,18 @@ gpu@0,57000000 {
 		status = "disabled";
 	};
 
+	lic: interrupt-controller@60004000 {
+		compatible = "nvidia,tegra124-ictlr", "nvidia,tegra30-ictlr";
+		reg = <0x0 0x60004000 0x0 0x100>,
+		      <0x0 0x60004100 0x0 0x100>,
+		      <0x0 0x60004200 0x0 0x100>,
+		      <0x0 0x60004300 0x0 0x100>,
+		      <0x0 0x60004400 0x0 0x100>;
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
+	};
+
 	timer@0,60005000 {
 		compatible = "nvidia,tegra124-timer", "nvidia,tegra20-timer";
 		reg = <0x0 0x60005000 0x0 0x400>;
@@ -955,5 +968,6 @@ timer {
 				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 10
 				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+		interrupt-parent = <&gic>;
 	};
 };

arch/arm/boot/dts/tegra20.dtsi

@@ -7,7 +7,7 @@
 
 / {
 	compatible = "nvidia,tegra20";
-	interrupt-parent = <&intc>;
+	interrupt-parent = <&lic>;
 
 	host1x@50000000 {
 		compatible = "nvidia,tegra20-host1x", "simple-bus";
@@ -142,6 +142,7 @@ dsi@54300000 {
 
 	timer@50040600 {
 		compatible = "arm,cortex-a9-twd-timer";
+		interrupt-parent = <&intc>;
 		reg = <0x50040600 0x20>;
 		interrupts = <GIC_PPI 13
 			(GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
@@ -154,6 +155,7 @@ intc: interrupt-controller@50041000 {
 		       0x50040100 0x0100>;
 		interrupt-controller;
 		#interrupt-cells = <3>;
+		interrupt-parent = <&intc>;
 	};
 
 	cache-controller@50043000 {
@@ -165,6 +167,17 @@ cache-controller@50043000 {
 		cache-level = <2>;
 	};
 
+	lic: interrupt-controller@60004000 {
+		compatible = "nvidia,tegra20-ictlr";
+		reg = <0x60004000 0x100>,
+		      <0x60004100 0x50>,
+		      <0x60004200 0x50>,
+		      <0x60004300 0x50>;
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&intc>;
+	};
+
 	timer@60005000 {
 		compatible = "nvidia,tegra20-timer";
 		reg = <0x60005000 0x60>;

arch/arm/boot/dts/tegra30.dtsi

@@ -8,7 +8,7 @@
 
 / {
 	compatible = "nvidia,tegra30";
-	interrupt-parent = <&intc>;
+	interrupt-parent = <&lic>;
 
 	pcie-controller@00003000 {
 		compatible = "nvidia,tegra30-pcie";
@@ -228,6 +228,7 @@ dsi@54300000 {
 	timer@50040600 {
 		compatible = "arm,cortex-a9-twd-timer";
 		reg = <0x50040600 0x20>;
+		interrupt-parent = <&intc>;
 		interrupts = <GIC_PPI 13
 			(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
 		clocks = <&tegra_car TEGRA30_CLK_TWD>;
@@ -239,6 +240,7 @@ intc: interrupt-controller@50041000 {
 		       0x50040100 0x0100>;
 		interrupt-controller;
 		#interrupt-cells = <3>;
+		interrupt-parent = <&intc>;
 	};
 
 	cache-controller@50043000 {
@@ -250,6 +252,18 @@ cache-controller@50043000 {
 		cache-level = <2>;
 	};
 
+	lic: interrupt-controller@60004000 {
+		compatible = "nvidia,tegra30-ictlr";
+		reg = <0x60004000 0x100>,
+		      <0x60004100 0x50>,
+		      <0x60004200 0x50>,
+		      <0x60004300 0x50>,
+		      <0x60004400 0x50>;
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&intc>;
+	};
+
 	timer@60005000 {
 		compatible = "nvidia,tegra30-timer", "nvidia,tegra20-timer";
 		reg = <0x60005000 0x400>;

arch/arm/mach-exynos/exynos.c

@@ -166,16 +166,14 @@ static void __init exynos_init_io(void)
 	exynos_map_io();
 }
 
+/*
+ * Apparently, these SoCs are not able to wake-up from suspend using
+ * the PMU. Too bad. Should they suddenly become capable of such a
+ * feat, the matches below should be moved to suspend.c.
+ */
 static const struct of_device_id exynos_dt_pmu_match[] = {
-	{ .compatible = "samsung,exynos3250-pmu" },
-	{ .compatible = "samsung,exynos4210-pmu" },
-	{ .compatible = "samsung,exynos4212-pmu" },
-	{ .compatible = "samsung,exynos4412-pmu" },
-	{ .compatible = "samsung,exynos4415-pmu" },
-	{ .compatible = "samsung,exynos5250-pmu" },
 	{ .compatible = "samsung,exynos5260-pmu" },
 	{ .compatible = "samsung,exynos5410-pmu" },
-	{ .compatible = "samsung,exynos5420-pmu" },
 	{ /*sentinel*/ },
 };
 
@@ -186,9 +184,6 @@ static void exynos_map_pmu(void)
 	np = of_find_matching_node(NULL, exynos_dt_pmu_match);
 	if (np)
 		pmu_base_addr = of_iomap(np, 0);
-
-	if (!pmu_base_addr)
-		panic("failed to find exynos pmu register\n");
 }
 
 static void __init exynos_init_irq(void)

arch/arm/mach-exynos/suspend.c

@@ -18,7 +18,9 @@
 #include <linux/syscore_ops.h>
 #include <linux/cpu_pm.h>
 #include <linux/io.h>
-#include <linux/irqchip/arm-gic.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of_address.h>
 #include <linux/err.h>
 #include <linux/regulator/machine.h>
 
@@ -43,8 +45,8 @@
 #define EXYNOS5420_CPU_STATE	0x28
 
 /**
- * struct exynos_wkup_irq - Exynos GIC to PMU IRQ mapping
- * @hwirq: Hardware IRQ signal of the GIC
+ * struct exynos_wkup_irq - PMU IRQ to mask mapping
+ * @hwirq: Hardware IRQ signal of the PMU
  * @mask: Mask in PMU wake-up mask register
  */
 struct exynos_wkup_irq {
@@ -93,14 +95,14 @@ static const struct exynos_wkup_irq exynos3250_wkup_irq[] = {
 };
 
 static const struct exynos_wkup_irq exynos4_wkup_irq[] = {
-	{ 76, BIT(1) }, /* RTC alarm */
-	{ 77, BIT(2) }, /* RTC tick */
+	{ 44, BIT(1) }, /* RTC alarm */
+	{ 45, BIT(2) }, /* RTC tick */
 	{ /* sentinel */ },
 };
 
 static const struct exynos_wkup_irq exynos5250_wkup_irq[] = {
-	{ 75, BIT(1) }, /* RTC alarm */
-	{ 76, BIT(2) }, /* RTC tick */
+	{ 43, BIT(1) }, /* RTC alarm */
+	{ 44, BIT(2) }, /* RTC tick */
 	{ /* sentinel */ },
 };
 
@@ -167,6 +169,113 @@ static int exynos_irq_set_wake(struct irq_data *data, unsigned int state)
 	return -ENOENT;
 }
 
+static struct irq_chip exynos_pmu_chip = {
+	.name			= "PMU",
+	.irq_eoi		= irq_chip_eoi_parent,
+	.irq_mask		= irq_chip_mask_parent,
+	.irq_unmask		= irq_chip_unmask_parent,
+	.irq_retrigger		= irq_chip_retrigger_hierarchy,
+	.irq_set_wake		= exynos_irq_set_wake,
+#ifdef CONFIG_SMP
+	.irq_set_affinity	= irq_chip_set_affinity_parent,
+#endif
+};
+
+static int exynos_pmu_domain_xlate(struct irq_domain *domain,
+				   struct device_node *controller,
+				   const u32 *intspec,
+				   unsigned int intsize,
+				   unsigned long *out_hwirq,
+				   unsigned int *out_type)
+{
+	if (domain->of_node != controller)
+		return -EINVAL;	/* Shouldn't happen, really... */
+	if (intsize != 3)
+		return -EINVAL;	/* Not GIC compliant */
+	if (intspec[0] != 0)
+		return -EINVAL;	/* No PPI should point to this domain */
+
+	*out_hwirq = intspec[1];
+	*out_type = intspec[2];
+	return 0;
+}
+
+static int exynos_pmu_domain_alloc(struct irq_domain *domain,
+				   unsigned int virq,
+				   unsigned int nr_irqs, void *data)
+{
+	struct of_phandle_args *args = data;
+	struct of_phandle_args parent_args;
+	irq_hw_number_t hwirq;
+	int i;
+
+	if (args->args_count != 3)
+		return -EINVAL;	/* Not GIC compliant */
+	if (args->args[0] != 0)
+		return -EINVAL;	/* No PPI should point to this domain */
+
+	hwirq = args->args[1];
+
+	for (i = 0; i < nr_irqs; i++)
+		irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i,
+					      &exynos_pmu_chip, NULL);
+
+	parent_args = *args;
+	parent_args.np = domain->parent->of_node;
+	return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &parent_args);
+}
+
+static struct irq_domain_ops exynos_pmu_domain_ops = {
+	.xlate	= exynos_pmu_domain_xlate,
+	.alloc	= exynos_pmu_domain_alloc,
+	.free	= irq_domain_free_irqs_common,
+};
+
+static int __init exynos_pmu_irq_init(struct device_node *node,
+				      struct device_node *parent)
+{
+	struct irq_domain *parent_domain, *domain;
+
+	if (!parent) {
+		pr_err("%s: no parent, giving up\n", node->full_name);
+		return -ENODEV;
+	}
+
+	parent_domain = irq_find_host(parent);
+	if (!parent_domain) {
+		pr_err("%s: unable to obtain parent domain\n", node->full_name);
+		return -ENXIO;
+	}
+
+	pmu_base_addr = of_iomap(node, 0);
+
+	if (!pmu_base_addr) {
+		pr_err("%s: failed to find exynos pmu register\n",
+		       node->full_name);
+		return -ENOMEM;
+	}
+
+	domain = irq_domain_add_hierarchy(parent_domain, 0, 0,
+					  node, &exynos_pmu_domain_ops,
+					  NULL);
+	if (!domain) {
+		iounmap(pmu_base_addr);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+#define EXYNOS_PMU_IRQ(symbol, name)	OF_DECLARE_2(irqchip, symbol, name, exynos_pmu_irq_init)
+
+EXYNOS_PMU_IRQ(exynos3250_pmu_irq, "samsung,exynos3250-pmu");
+EXYNOS_PMU_IRQ(exynos4210_pmu_irq, "samsung,exynos4210-pmu");
+EXYNOS_PMU_IRQ(exynos4212_pmu_irq, "samsung,exynos4212-pmu");
+EXYNOS_PMU_IRQ(exynos4412_pmu_irq, "samsung,exynos4412-pmu");
+EXYNOS_PMU_IRQ(exynos4415_pmu_irq, "samsung,exynos4415-pmu");
+EXYNOS_PMU_IRQ(exynos5250_pmu_irq, "samsung,exynos5250-pmu");
+EXYNOS_PMU_IRQ(exynos5420_pmu_irq, "samsung,exynos5420-pmu");
+
 static int exynos_cpu_do_idle(void)
 {
 	/* issue the standby signal into the pm unit. */
@@ -615,17 +724,19 @@ static struct syscore_ops exynos_pm_syscore_ops;
 void __init exynos_pm_init(void)
 {
 	const struct of_device_id *match;
+	struct device_node *np;
 	u32 tmp;
 
-	of_find_matching_node_and_match(NULL, exynos_pmu_of_device_ids, &match);
-	if (!match) {
+	np = of_find_matching_node_and_match(NULL, exynos_pmu_of_device_ids, &match);
+	if (!np) {
 		pr_err("Failed to find PMU node\n");
 		return;
 	}
-	pm_data = (struct exynos_pm_data *) match->data;
 
-	/* Platform-specific GIC callback */
-	gic_arch_extn.irq_set_wake = exynos_irq_set_wake;
+	if (WARN_ON(!of_find_property(np, "interrupt-controller", NULL)))
+		pr_warn("Outdated DT detected, suspend/resume will NOT work\n");
+
+	pm_data = (struct exynos_pm_data *) match->data;
 
 	/* All wakeup disable */
 	tmp = pmu_raw_readl(S5P_WAKEUP_MASK);

arch/arm/mach-imx/Kconfig

@@ -631,6 +631,7 @@ config SOC_IMX6SX
 
 config SOC_VF610
 	bool "Vybrid Family VF610 support"
+	select IRQ_DOMAIN_HIERARCHY
 	select ARM_GIC
 	select PINCTRL_VF610
 	select PL310_ERRATA_769419 if CACHE_L2X0

arch/arm/mach-omap2/omap-wakeupgen.c

@@ -20,11 +20,12 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/cpu.h>
 #include <linux/notifier.h>
 #include <linux/cpu_pm.h>
-#include <linux/irqchip/arm-gic.h>
 
 #include "omap-wakeupgen.h"
 #include "omap-secure.h"
@@ -78,29 +79,12 @@ static inline void sar_writel(u32 val, u32 offset, u8 idx)
 
 static inline int _wakeupgen_get_irq_info(u32 irq, u32 *bit_posn, u8 *reg_index)
 {
-	unsigned int spi_irq;
-
-	/*
-	 * PPIs and SGIs are not supported.
-	 */
-	if (irq < OMAP44XX_IRQ_GIC_START)
-		return -EINVAL;
-
-	/*
-	 * Subtract the GIC offset.
-	 */
-	spi_irq = irq - OMAP44XX_IRQ_GIC_START;
-	if (spi_irq > MAX_IRQS) {
-		pr_err("omap wakeupGen: Invalid IRQ%d\n", irq);
-		return -EINVAL;
-	}
-
 	/*
 	 * Each WakeupGen register controls 32 interrupt.
 	 * i.e. 1 bit per SPI IRQ
 	 */
-	*reg_index = spi_irq >> 5;
-	*bit_posn = spi_irq %= 32;
+	*reg_index = irq >> 5;
+	*bit_posn = irq %= 32;
 
 	return 0;
 }
@@ -141,6 +125,7 @@ static void wakeupgen_mask(struct irq_data *d)
 	raw_spin_lock_irqsave(&wakeupgen_lock, flags);
 	_wakeupgen_clear(d->hwirq, irq_target_cpu[d->hwirq]);
 	raw_spin_unlock_irqrestore(&wakeupgen_lock, flags);
+	irq_chip_mask_parent(d);
 }
 
 /*
@@ -153,6 +138,7 @@ static void wakeupgen_unmask(struct irq_data *d)
 	raw_spin_lock_irqsave(&wakeupgen_lock, flags);
 	_wakeupgen_set(d->hwirq, irq_target_cpu[d->hwirq]);
 	raw_spin_unlock_irqrestore(&wakeupgen_lock, flags);
+	irq_chip_unmask_parent(d);
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
@@ -400,15 +386,91 @@ int omap_secure_apis_support(void)
 	return omap_secure_apis;
 }
 
+static struct irq_chip wakeupgen_chip = {
+	.name			= "WUGEN",
+	.irq_eoi		= irq_chip_eoi_parent,
+	.irq_mask		= wakeupgen_mask,
+	.irq_unmask		= wakeupgen_unmask,
+	.irq_retrigger		= irq_chip_retrigger_hierarchy,
+	.flags			= IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND,
+#ifdef CONFIG_SMP
+	.irq_set_affinity	= irq_chip_set_affinity_parent,
+#endif
+};
+
+static int wakeupgen_domain_xlate(struct irq_domain *domain,
+				  struct device_node *controller,
+				  const u32 *intspec,
+				  unsigned int intsize,
+				  unsigned long *out_hwirq,
+				  unsigned int *out_type)
+{
+	if (domain->of_node != controller)
+		return -EINVAL;	/* Shouldn't happen, really... */
+	if (intsize != 3)
+		return -EINVAL;	/* Not GIC compliant */
+	if (intspec[0] != 0)
+		return -EINVAL;	/* No PPI should point to this domain */
+
+	*out_hwirq = intspec[1];
+	*out_type = intspec[2];
+	return 0;
+}
+
+static int wakeupgen_domain_alloc(struct irq_domain *domain,
+				  unsigned int virq,
+				  unsigned int nr_irqs, void *data)
+{
+	struct of_phandle_args *args = data;
+	struct of_phandle_args parent_args;
+	irq_hw_number_t hwirq;
+	int i;
+
+	if (args->args_count != 3)
+		return -EINVAL;	/* Not GIC compliant */
+	if (args->args[0] != 0)
+		return -EINVAL;	/* No PPI should point to this domain */
+
+	hwirq = args->args[1];
+	if (hwirq >= MAX_IRQS)
+		return -EINVAL;	/* Can't deal with this */
+
+	for (i = 0; i < nr_irqs; i++)
+		irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i,
+					      &wakeupgen_chip, NULL);
+
+	parent_args = *args;
+	parent_args.np = domain->parent->of_node;
+	return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &parent_args);
+}
+
+static struct irq_domain_ops wakeupgen_domain_ops = {
+	.xlate	= wakeupgen_domain_xlate,
+	.alloc	= wakeupgen_domain_alloc,
+	.free	= irq_domain_free_irqs_common,
+};
+
 /*
  * Initialise the wakeupgen module.
  */
-int __init omap_wakeupgen_init(void)
+static int __init wakeupgen_init(struct device_node *node,
+				 struct device_node *parent)
 {
+	struct irq_domain *parent_domain, *domain;
 	int i;
 	unsigned int boot_cpu = smp_processor_id();
 	u32 val;
 
+	if (!parent) {
+		pr_err("%s: no parent, giving up\n", node->full_name);
+		return -ENODEV;
+	}
+
+	parent_domain = irq_find_host(parent);
+	if (!parent_domain) {
+		pr_err("%s: unable to obtain parent domain\n", node->full_name);
+		return -ENXIO;
+	}
 	/* Not supported on OMAP4 ES1.0 silicon */
 	if (omap_rev() == OMAP4430_REV_ES1_0) {
 		WARN(1, "WakeupGen: Not supported on OMAP4430 ES1.0\n");
@@ -416,7 +478,7 @@ int __init omap_wakeupgen_init(void)
 	}
 
 	/* Static mapping, never released */
-	wakeupgen_base = ioremap(OMAP_WKUPGEN_BASE, SZ_4K);
+	wakeupgen_base = of_iomap(node, 0);
 	if (WARN_ON(!wakeupgen_base))
 		return -ENOMEM;
 
@@ -429,6 +491,14 @@ int __init omap_wakeupgen_init(void)
 		max_irqs = AM43XX_IRQS;
 	}
 
+	domain = irq_domain_add_hierarchy(parent_domain, 0, max_irqs,
+					  node, &wakeupgen_domain_ops,
+					  NULL);
+	if (!domain) {
+		iounmap(wakeupgen_base);
+		return -ENOMEM;
+	}
+
 	/* Clear all IRQ bitmasks at wakeupGen level */
 	for (i = 0; i < irq_banks; i++) {
 		wakeupgen_writel(0, i, CPU0_ID);
@@ -436,14 +506,6 @@ int __init omap_wakeupgen_init(void)
 			wakeupgen_writel(0, i, CPU1_ID);
 	}
 
-	/*
-	 * Override GIC architecture specific functions to add
-	 * OMAP WakeupGen interrupt controller along with GIC
-	 */
-	gic_arch_extn.irq_mask = wakeupgen_mask;
-	gic_arch_extn.irq_unmask = wakeupgen_unmask;
-	gic_arch_extn.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE;
-
 	/*
 	 * FIXME: Add support to set_smp_affinity() once the core
 	 * GIC code has necessary hooks in place.
@@ -474,3 +536,9 @@ int __init omap_wakeupgen_init(void)
 
 	return 0;
 }
+
+/*
+ * We cannot use the IRQCHIP_DECLARE macro that lives in
+ * drivers/irqchip, so we're forced to roll our own. Not very nice.
+ */
+OF_DECLARE_2(irqchip, ti_wakeupgen, "ti,omap4-wugen-mpu", wakeupgen_init);

arch/arm/mach-omap2/omap-wakeupgen.h

@@ -33,7 +33,6 @@
 #define OMAP_TIMESTAMPCYCLELO			0xc08
 #define OMAP_TIMESTAMPCYCLEHI			0xc0c
 
-extern int __init omap_wakeupgen_init(void);
 extern void __iomem *omap_get_wakeupgen_base(void);
 extern int omap_secure_apis_support(void);
 #endif

arch/arm/mach-omap2/omap4-common.c

@@ -22,7 +22,6 @@
 #include <linux/of_platform.h>
 #include <linux/export.h>
 #include <linux/irqchip/arm-gic.h>
-#include <linux/irqchip/irq-crossbar.h>
 #include <linux/of_address.h>
 #include <linux/reboot.h>
 #include <linux/genalloc.h>
@@ -242,26 +241,26 @@ static int __init omap4_sar_ram_init(void)
 }
 omap_early_initcall(omap4_sar_ram_init);
 
-static const struct of_device_id gic_match[] = {
-	{ .compatible = "arm,cortex-a9-gic", },
-	{ .compatible = "arm,cortex-a15-gic", },
+static const struct of_device_id intc_match[] = {
+	{ .compatible = "ti,omap4-wugen-mpu", },
+	{ .compatible = "ti,omap5-wugen-mpu", },
 	{ },
 };
 
-static struct device_node *gic_node;
+static struct device_node *intc_node;
 
 unsigned int omap4_xlate_irq(unsigned int hwirq)
 {
 	struct of_phandle_args irq_data;
 	unsigned int irq;
 
-	if (!gic_node)
-		gic_node = of_find_matching_node(NULL, gic_match);
+	if (!intc_node)
+		intc_node = of_find_matching_node(NULL, intc_match);
 
-	if (WARN_ON(!gic_node))
+	if (WARN_ON(!intc_node))
 		return hwirq;
 
-	irq_data.np = gic_node;
+	irq_data.np = intc_node;
 	irq_data.args_count = 3;
 	irq_data.args[0] = 0;
 	irq_data.args[1] = hwirq - OMAP44XX_IRQ_GIC_START;
@@ -278,6 +277,12 @@ void __init omap_gic_of_init(void)
 {
 	struct device_node *np;
 
+	intc_node = of_find_matching_node(NULL, intc_match);
+	if (WARN_ON(!intc_node)) {
+		pr_err("No WUGEN found in DT, system will misbehave.\n");
+		pr_err("UPDATE YOUR DEVICE TREE!\n");
+	}
+
 	/* Extract GIC distributor and TWD bases for OMAP4460 ROM Errata WA */
 	if (!cpu_is_omap446x())
 		goto skip_errata_init;
@@ -291,9 +296,5 @@ void __init omap_gic_of_init(void)
 	WARN_ON(!twd_base);
 
 skip_errata_init:
-	omap_wakeupgen_init();
-#ifdef CONFIG_IRQ_CROSSBAR
-	irqcrossbar_init();
-#endif
 	irqchip_init();
 }

arch/arm/mach-shmobile/intc-sh73a0.c

@@ -252,11 +252,6 @@ static irqreturn_t sh73a0_intcs_demux(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static int sh73a0_set_wake(struct irq_data *data, unsigned int on)
-{
-	return 0; /* always allow wakeup */
-}
-
 #define PINTER0_PHYS 0xe69000a0
 #define PINTER1_PHYS 0xe69000a4
 #define PINTER0_VIRT IOMEM(0xe69000a0)
@@ -318,8 +313,8 @@ void __init sh73a0_init_irq(void)
 	void __iomem *gic_cpu_base = IOMEM(0xf0000100);
 	void __iomem *intevtsa = ioremap_nocache(0xffd20100, PAGE_SIZE);
 
+	gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE);
 	gic_init(0, 29, gic_dist_base, gic_cpu_base);
-	gic_arch_extn.irq_set_wake = sh73a0_set_wake;
 
 	register_intc_controller(&intcs_desc);
 	register_intc_controller(&intc_pint0_desc);

arch/arm/mach-shmobile/setup-r8a7779.c

@@ -713,18 +713,13 @@ void __init r8a7779_init_late(void)
 }
 
 #ifdef CONFIG_USE_OF
-static int r8a7779_set_wake(struct irq_data *data, unsigned int on)
-{
-	return 0; /* always allow wakeup */
-}
-
 void __init r8a7779_init_irq_dt(void)
 {
 #ifdef CONFIG_ARCH_SHMOBILE_LEGACY
 	void __iomem *gic_dist_base = ioremap_nocache(0xf0001000, 0x1000);
 	void __iomem *gic_cpu_base = ioremap_nocache(0xf0000100, 0x1000);
 #endif
-	gic_arch_extn.irq_set_wake = r8a7779_set_wake;
+	gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE);
 
 #ifdef CONFIG_ARCH_SHMOBILE_LEGACY
 	gic_init(0, 29, gic_dist_base, gic_cpu_base);

arch/arm/mach-tegra/iomap.h

@@ -31,21 +31,6 @@
 #define TEGRA_ARM_INT_DIST_BASE		0x50041000
 #define TEGRA_ARM_INT_DIST_SIZE		SZ_4K
 
-#define TEGRA_PRIMARY_ICTLR_BASE	0x60004000
-#define TEGRA_PRIMARY_ICTLR_SIZE	SZ_64
-
-#define TEGRA_SECONDARY_ICTLR_BASE	0x60004100
-#define TEGRA_SECONDARY_ICTLR_SIZE	SZ_64
-
-#define TEGRA_TERTIARY_ICTLR_BASE	0x60004200
-#define TEGRA_TERTIARY_ICTLR_SIZE	SZ_64
-
-#define TEGRA_QUATERNARY_ICTLR_BASE	0x60004300
-#define TEGRA_QUATERNARY_ICTLR_SIZE	SZ_64
-
-#define TEGRA_QUINARY_ICTLR_BASE	0x60004400
-#define TEGRA_QUINARY_ICTLR_SIZE	SZ_64
-
 #define TEGRA_TMR1_BASE			0x60005000
 #define TEGRA_TMR1_SIZE			SZ_8
 

arch/arm/mach-tegra/irq.c

@@ -30,43 +30,9 @@
 #include "board.h"
 #include "iomap.h"
 
-#define ICTLR_CPU_IEP_VFIQ	0x08
-#define ICTLR_CPU_IEP_FIR	0x14
-#define ICTLR_CPU_IEP_FIR_SET	0x18
-#define ICTLR_CPU_IEP_FIR_CLR	0x1c
-
-#define ICTLR_CPU_IER		0x20
-#define ICTLR_CPU_IER_SET	0x24
-#define ICTLR_CPU_IER_CLR	0x28
-#define ICTLR_CPU_IEP_CLASS	0x2C
-
-#define ICTLR_COP_IER		0x30
-#define ICTLR_COP_IER_SET	0x34
-#define ICTLR_COP_IER_CLR	0x38
-#define ICTLR_COP_IEP_CLASS	0x3c
-
-#define FIRST_LEGACY_IRQ 32
-#define TEGRA_MAX_NUM_ICTLRS	5
-
 #define SGI_MASK 0xFFFF
 
-static int num_ictlrs;
-
-static void __iomem *ictlr_reg_base[] = {
-	IO_ADDRESS(TEGRA_PRIMARY_ICTLR_BASE),
-	IO_ADDRESS(TEGRA_SECONDARY_ICTLR_BASE),
-	IO_ADDRESS(TEGRA_TERTIARY_ICTLR_BASE),
-	IO_ADDRESS(TEGRA_QUATERNARY_ICTLR_BASE),
-	IO_ADDRESS(TEGRA_QUINARY_ICTLR_BASE),
-};
-
 #ifdef CONFIG_PM_SLEEP
-static u32 cop_ier[TEGRA_MAX_NUM_ICTLRS];
-static u32 cop_iep[TEGRA_MAX_NUM_ICTLRS];
-static u32 cpu_ier[TEGRA_MAX_NUM_ICTLRS];
-static u32 cpu_iep[TEGRA_MAX_NUM_ICTLRS];
-
-static u32 ictlr_wake_mask[TEGRA_MAX_NUM_ICTLRS];
 static void __iomem *tegra_gic_cpu_base;
 #endif
 
@@ -83,140 +49,7 @@ bool tegra_pending_sgi(void)
 	return false;
 }
 
-static inline void tegra_irq_write_mask(unsigned int irq, unsigned long reg)
-{
-	void __iomem *base;
-	u32 mask;
-
-	BUG_ON(irq < FIRST_LEGACY_IRQ ||
-		irq >= FIRST_LEGACY_IRQ + num_ictlrs * 32);
-
-	base = ictlr_reg_base[(irq - FIRST_LEGACY_IRQ) / 32];
-	mask = BIT((irq - FIRST_LEGACY_IRQ) % 32);
-
-	__raw_writel(mask, base + reg);
-}
-
-static void tegra_mask(struct irq_data *d)
-{
-	if (d->hwirq < FIRST_LEGACY_IRQ)
-		return;
-
-	tegra_irq_write_mask(d->hwirq, ICTLR_CPU_IER_CLR);
-}
-
-static void tegra_unmask(struct irq_data *d)
-{
-	if (d->hwirq < FIRST_LEGACY_IRQ)
-		return;
-
-	tegra_irq_write_mask(d->hwirq, ICTLR_CPU_IER_SET);
-}
-
-static void tegra_ack(struct irq_data *d)
-{
-	if (d->hwirq < FIRST_LEGACY_IRQ)
-		return;
-
-	tegra_irq_write_mask(d->hwirq, ICTLR_CPU_IEP_FIR_CLR);
-}
-
-static void tegra_eoi(struct irq_data *d)
-{
-	if (d->hwirq < FIRST_LEGACY_IRQ)
-		return;
-
-	tegra_irq_write_mask(d->hwirq, ICTLR_CPU_IEP_FIR_CLR);
-}
-
-static int tegra_retrigger(struct irq_data *d)
-{
-	if (d->hwirq < FIRST_LEGACY_IRQ)
-		return 0;
-
-	tegra_irq_write_mask(d->hwirq, ICTLR_CPU_IEP_FIR_SET);
-
-	return 1;
-}
-
 #ifdef CONFIG_PM_SLEEP
-static int tegra_set_wake(struct irq_data *d, unsigned int enable)
-{
-	u32 irq = d->hwirq;
-	u32 index, mask;
-
-	if (irq < FIRST_LEGACY_IRQ ||
-		irq >= FIRST_LEGACY_IRQ + num_ictlrs * 32)
-		return -EINVAL;
-
-	index = ((irq - FIRST_LEGACY_IRQ) / 32);
-	mask = BIT((irq - FIRST_LEGACY_IRQ) % 32);
-	if (enable)
-		ictlr_wake_mask[index] |= mask;
-	else
-		ictlr_wake_mask[index] &= ~mask;
-
-	return 0;
-}
-
-static int tegra_legacy_irq_suspend(void)
-{
-	unsigned long flags;
-	int i;
-
-	local_irq_save(flags);
-	for (i = 0; i < num_ictlrs; i++) {
-		void __iomem *ictlr = ictlr_reg_base[i];
-		/* Save interrupt state */
-		cpu_ier[i] = readl_relaxed(ictlr + ICTLR_CPU_IER);
-		cpu_iep[i] = readl_relaxed(ictlr + ICTLR_CPU_IEP_CLASS);
-		cop_ier[i] = readl_relaxed(ictlr + ICTLR_COP_IER);
-		cop_iep[i] = readl_relaxed(ictlr + ICTLR_COP_IEP_CLASS);
-
-		/* Disable COP interrupts */
-		writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR);
-
-		/* Disable CPU interrupts */
-		writel_relaxed(~0ul, ictlr + ICTLR_CPU_IER_CLR);
-
-		/* Enable the wakeup sources of ictlr */
-		writel_relaxed(ictlr_wake_mask[i], ictlr + ICTLR_CPU_IER_SET);
-	}
-	local_irq_restore(flags);
-
-	return 0;
-}
-
-static void tegra_legacy_irq_resume(void)
-{
-	unsigned long flags;
-	int i;
-
-	local_irq_save(flags);
-	for (i = 0; i < num_ictlrs; i++) {
-		void __iomem *ictlr = ictlr_reg_base[i];
-		writel_relaxed(cpu_iep[i], ictlr + ICTLR_CPU_IEP_CLASS);
-		writel_relaxed(~0ul, ictlr + ICTLR_CPU_IER_CLR);
-		writel_relaxed(cpu_ier[i], ictlr + ICTLR_CPU_IER_SET);
-		writel_relaxed(cop_iep[i], ictlr + ICTLR_COP_IEP_CLASS);
-		writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR);
-		writel_relaxed(cop_ier[i], ictlr + ICTLR_COP_IER_SET);
-	}
-	local_irq_restore(flags);
-}
-
-static struct syscore_ops tegra_legacy_irq_syscore_ops = {
-	.suspend = tegra_legacy_irq_suspend,
-	.resume = tegra_legacy_irq_resume,
-};
-
-int tegra_legacy_irq_syscore_init(void)
-{
-	register_syscore_ops(&tegra_legacy_irq_syscore_ops);
-
-	return 0;
-}
-
 static int tegra_gic_notifier(struct notifier_block *self,
 			      unsigned long cmd, void *v)
 {
@@ -251,45 +84,19 @@ static void tegra114_gic_cpu_pm_registration(void)
 	cpu_pm_register_notifier(&tegra_gic_notifier_block);
 }
 #else
-#define tegra_set_wake NULL
 static void tegra114_gic_cpu_pm_registration(void) { }
 #endif
 
+static const struct of_device_id tegra_ictlr_match[] __initconst = {
+	{ .compatible = "nvidia,tegra20-ictlr" },
+	{ .compatible = "nvidia,tegra30-ictlr" },
+	{ }
+};
+
 void __init tegra_init_irq(void)
 {
-	int i;
-	void __iomem *distbase;
-
-	distbase = IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE);
-	num_ictlrs = readl_relaxed(distbase + GIC_DIST_CTR) & 0x1f;
-
-	if (num_ictlrs > ARRAY_SIZE(ictlr_reg_base)) {
-		WARN(1, "Too many (%d) interrupt controllers found. Maximum is %d.",
-			num_ictlrs, ARRAY_SIZE(ictlr_reg_base));
-		num_ictlrs = ARRAY_SIZE(ictlr_reg_base);
-	}
-
-	for (i = 0; i < num_ictlrs; i++) {
-		void __iomem *ictlr = ictlr_reg_base[i];
-		writel(~0, ictlr + ICTLR_CPU_IER_CLR);
-		writel(0, ictlr + ICTLR_CPU_IEP_CLASS);
-	}
-
-	gic_arch_extn.irq_ack = tegra_ack;
-	gic_arch_extn.irq_eoi = tegra_eoi;
-	gic_arch_extn.irq_mask = tegra_mask;
-	gic_arch_extn.irq_unmask = tegra_unmask;
-	gic_arch_extn.irq_retrigger = tegra_retrigger;
-	gic_arch_extn.irq_set_wake = tegra_set_wake;
-	gic_arch_extn.flags = IRQCHIP_MASK_ON_SUSPEND;
-
-	/*
-	 * Check if there is a devicetree present, since the GIC will be
-	 * initialized elsewhere under DT.
-	 */
-	if (!of_have_populated_dt())
-		gic_init(0, 29, distbase,
-			IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x100));
+	if (WARN_ON(!of_find_matching_node(NULL, tegra_ictlr_match)))
+		pr_warn("Outdated DT detected, suspend/resume will NOT work\n");
 
 	tegra114_gic_cpu_pm_registration();
 }

arch/arm/mach-tegra/irq.h

@@ -19,10 +19,4 @@
 
 bool tegra_pending_sgi(void);
 
-#ifdef CONFIG_PM_SLEEP
-int tegra_legacy_irq_syscore_init(void);
-#else
-static inline int tegra_legacy_irq_syscore_init(void) { return 0; }
-#endif
-
 #endif

arch/arm/mach-tegra/tegra.c

@@ -82,7 +82,6 @@ static void __init tegra_dt_init_irq(void)
 {
 	tegra_init_irq();
 	irqchip_init();
-	tegra_legacy_irq_syscore_init();
 }
 
 static void __init tegra_dt_init(void)

arch/arm/mach-ux500/cpu.c

@@ -52,7 +52,7 @@ void ux500_restart(enum reboot_mode mode, const char *cmd)
 */
 void __init ux500_init_irq(void)
 {
-	gic_arch_extn.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
+	gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND);
 	irqchip_init();
 
 	/*

arch/arm/mach-zynq/common.c

@@ -186,7 +186,7 @@ static void __init zynq_map_io(void)
 
 static void __init zynq_irq_init(void)
 {
-	gic_arch_extn.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
+	gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND);
 	irqchip_init();
 }
 

arch/mips/loongson/loongson-3/hpet.c

@@ -162,7 +162,7 @@ static irqreturn_t hpet_irq_handler(int irq, void *data)
 
 static struct irqaction hpet_irq = {
 	.handler = hpet_irq_handler,
-	.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_TIMER,
+	.flags = IRQF_NOBALANCING | IRQF_TIMER,
 	.name = "hpet",
 };
 

drivers/block/cpqarray.c

@@ -405,8 +405,8 @@ static int cpqarray_register_ctlr(int i, struct pci_dev *pdev)
 		goto Enomem4;
 	}
 	hba[i]->access.set_intr_mask(hba[i], 0);
-	if (request_irq(hba[i]->intr, do_ida_intr,
-		IRQF_DISABLED|IRQF_SHARED, hba[i]->devname, hba[i]))
+	if (request_irq(hba[i]->intr, do_ida_intr, IRQF_SHARED,
+			hba[i]->devname, hba[i]))
 	{
 		printk(KERN_ERR "cpqarray: Unable to get irq %d for %s\n",
 				hba[i]->intr, hba[i]->devname);

drivers/bus/omap_l3_noc.c

@@ -284,7 +284,7 @@ static int omap_l3_probe(struct platform_device *pdev)
 	 */
 	l3->debug_irq = platform_get_irq(pdev, 0);
 	ret = devm_request_irq(l3->dev, l3->debug_irq, l3_interrupt_handler,
-			       IRQF_DISABLED, "l3-dbg-irq", l3);
+			       0x0, "l3-dbg-irq", l3);
 	if (ret) {
 		dev_err(l3->dev, "request_irq failed for %d\n",
 			l3->debug_irq);
@@ -293,7 +293,7 @@ static int omap_l3_probe(struct platform_device *pdev)
 
 	l3->app_irq = platform_get_irq(pdev, 1);
 	ret = devm_request_irq(l3->dev, l3->app_irq, l3_interrupt_handler,
-			       IRQF_DISABLED, "l3-app-irq", l3);
+			       0x0, "l3-app-irq", l3);
 	if (ret)
 		dev_err(l3->dev, "request_irq failed for %d\n", l3->app_irq);
 

drivers/bus/omap_l3_smx.c

@@ -251,18 +251,16 @@ static int omap3_l3_probe(struct platform_device *pdev)
 	}
 
 	l3->debug_irq = platform_get_irq(pdev, 0);
-	ret = request_irq(l3->debug_irq, omap3_l3_app_irq,
-		IRQF_DISABLED | IRQF_TRIGGER_RISING,
-		"l3-debug-irq", l3);
+	ret = request_irq(l3->debug_irq, omap3_l3_app_irq, IRQF_TRIGGER_RISING,
+			  "l3-debug-irq", l3);
 	if (ret) {
 		dev_err(&pdev->dev, "couldn't request debug irq\n");
 		goto err1;
 	}
 
 	l3->app_irq = platform_get_irq(pdev, 1);
-	ret = request_irq(l3->app_irq, omap3_l3_app_irq,
-		IRQF_DISABLED | IRQF_TRIGGER_RISING,
-		"l3-app-irq", l3);
+	ret = request_irq(l3->app_irq, omap3_l3_app_irq, IRQF_TRIGGER_RISING,
+			  "l3-app-irq", l3);
 	if (ret) {
 		dev_err(&pdev->dev, "couldn't request app irq\n");
 		goto err2;

drivers/irqchip/Kconfig

@@ -110,6 +110,13 @@ config RENESAS_IRQC
 	bool
 	select IRQ_DOMAIN
 
+config ST_IRQCHIP
+	bool
+	select REGMAP
+	select MFD_SYSCON
+	help
+	  Enables SysCfg Controlled IRQs on STi based platforms.
+
 config TB10X_IRQC
 	bool
 	select IRQ_DOMAIN

drivers/irqchip/Makefile

@@ -6,6 +6,7 @@ obj-$(CONFIG_ARCH_HIP04)		+= irq-hip04.o
 obj-$(CONFIG_ARCH_MMP)			+= irq-mmp.o
 obj-$(CONFIG_ARCH_MVEBU)		+= irq-armada-370-xp.o
 obj-$(CONFIG_ARCH_MXS)			+= irq-mxs.o
+obj-$(CONFIG_ARCH_TEGRA)		+= irq-tegra.o
 obj-$(CONFIG_ARCH_S3C24XX)		+= irq-s3c24xx.o
 obj-$(CONFIG_DW_APB_ICTL)		+= irq-dw-apb-ictl.o
 obj-$(CONFIG_METAG)			+= irq-metag-ext.o
@@ -33,10 +34,12 @@ obj-$(CONFIG_RENESAS_IRQC)		+= irq-renesas-irqc.o
 obj-$(CONFIG_VERSATILE_FPGA_IRQ)	+= irq-versatile-fpga.o
 obj-$(CONFIG_ARCH_NSPIRE)		+= irq-zevio.o
 obj-$(CONFIG_ARCH_VT8500)		+= irq-vt8500.o
+obj-$(CONFIG_ST_IRQCHIP)		+= irq-st.o
 obj-$(CONFIG_TB10X_IRQC)		+= irq-tb10x.o
 obj-$(CONFIG_XTENSA)			+= irq-xtensa-pic.o
 obj-$(CONFIG_XTENSA_MX)			+= irq-xtensa-mx.o
 obj-$(CONFIG_IRQ_CROSSBAR)		+= irq-crossbar.o
+obj-$(CONFIG_SOC_VF610)			+= irq-vf610-mscm-ir.o
 obj-$(CONFIG_BCM7120_L2_IRQ)		+= irq-bcm7120-l2.o
 obj-$(CONFIG_BRCMSTB_L2_IRQ)		+= irq-brcmstb-l2.o
 obj-$(CONFIG_KEYSTONE_IRQ)		+= irq-keystone.o

drivers/irqchip/irq-armada-370-xp.c

@@ -38,6 +38,8 @@
 /* Interrupt Controller Registers Map */
 #define ARMADA_370_XP_INT_SET_MASK_OFFS		(0x48)
 #define ARMADA_370_XP_INT_CLEAR_MASK_OFFS	(0x4C)
+#define ARMADA_370_XP_INT_FABRIC_MASK_OFFS	(0x54)
+#define ARMADA_370_XP_INT_CAUSE_PERF(cpu)	(1 << cpu)
 
 #define ARMADA_370_XP_INT_CONTROL		(0x00)
 #define ARMADA_370_XP_INT_SET_ENABLE_OFFS	(0x30)
@@ -56,6 +58,7 @@
 #define ARMADA_370_XP_MAX_PER_CPU_IRQS		(28)
 
 #define ARMADA_370_XP_TIMER0_PER_CPU_IRQ	(5)
+#define ARMADA_370_XP_FABRIC_IRQ		(3)
 
 #define IPI_DOORBELL_START                      (0)
 #define IPI_DOORBELL_END                        (8)
@@ -77,6 +80,17 @@ static DEFINE_MUTEX(msi_used_lock);
 static phys_addr_t msi_doorbell_addr;
 #endif
 
+static inline bool is_percpu_irq(irq_hw_number_t irq)
+{
+	switch (irq) {
+	case ARMADA_370_XP_TIMER0_PER_CPU_IRQ:
+	case ARMADA_370_XP_FABRIC_IRQ:
+		return true;
+	default:
+		return false;
+	}
+}
+
 /*
  * In SMP mode:
  * For shared global interrupts, mask/unmask global enable bit
@@ -86,7 +100,7 @@ static void armada_370_xp_irq_mask(struct irq_data *d)
 {
 	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 
-	if (hwirq != ARMADA_370_XP_TIMER0_PER_CPU_IRQ)
+	if (!is_percpu_irq(hwirq))
 		writel(hwirq, main_int_base +
 				ARMADA_370_XP_INT_CLEAR_ENABLE_OFFS);
 	else
@@ -98,7 +112,7 @@ static void armada_370_xp_irq_unmask(struct irq_data *d)
 {
 	irq_hw_number_t hwirq = irqd_to_hwirq(d);
 
-	if (hwirq != ARMADA_370_XP_TIMER0_PER_CPU_IRQ)
+	if (!is_percpu_irq(hwirq))
 		writel(hwirq, main_int_base +
 				ARMADA_370_XP_INT_SET_ENABLE_OFFS);
 	else
@@ -281,20 +295,21 @@ static struct irq_chip armada_370_xp_irq_chip = {
 #ifdef CONFIG_SMP
 	.irq_set_affinity = armada_xp_set_affinity,
 #endif
+	.flags		= IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND,
 };
 
 static int armada_370_xp_mpic_irq_map(struct irq_domain *h,
 				      unsigned int virq, irq_hw_number_t hw)
 {
 	armada_370_xp_irq_mask(irq_get_irq_data(virq));
-	if (hw != ARMADA_370_XP_TIMER0_PER_CPU_IRQ)
+	if (!is_percpu_irq(hw))
 		writel(hw, per_cpu_int_base +
 			ARMADA_370_XP_INT_CLEAR_MASK_OFFS);
 	else
 		writel(hw, main_int_base + ARMADA_370_XP_INT_SET_ENABLE_OFFS);
 	irq_set_status_flags(virq, IRQ_LEVEL);
 
-	if (hw == ARMADA_370_XP_TIMER0_PER_CPU_IRQ) {
+	if (is_percpu_irq(hw)) {
 		irq_set_percpu_devid(virq);
 		irq_set_chip_and_handler(virq, &armada_370_xp_irq_chip,
 					handle_percpu_devid_irq);
@@ -308,28 +323,6 @@ static int armada_370_xp_mpic_irq_map(struct irq_domain *h,
 	return 0;
 }
 
-#ifdef CONFIG_SMP
-static void armada_mpic_send_doorbell(const struct cpumask *mask,
-				      unsigned int irq)
-{
-	int cpu;
-	unsigned long map = 0;
-
-	/* Convert our logical CPU mask into a physical one. */
-	for_each_cpu(cpu, mask)
-		map |= 1 << cpu_logical_map(cpu);
-
-	/*
-	 * Ensure that stores to Normal memory are visible to the
-	 * other CPUs before issuing the IPI.
-	 */
-	dsb();
-
-	/* submit softirq */
-	writel((map << 8) | irq, main_int_base +
-		ARMADA_370_XP_SW_TRIG_INT_OFFS);
-}
-
 static void armada_xp_mpic_smp_cpu_init(void)
 {
 	u32 control;
@@ -352,11 +345,44 @@ static void armada_xp_mpic_smp_cpu_init(void)
 	writel(0, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK_OFFS);
 }
 
+static void armada_xp_mpic_perf_init(void)
+{
+	unsigned long cpuid = cpu_logical_map(smp_processor_id());
+
+	/* Enable Performance Counter Overflow interrupts */
+	writel(ARMADA_370_XP_INT_CAUSE_PERF(cpuid),
+	       per_cpu_int_base + ARMADA_370_XP_INT_FABRIC_MASK_OFFS);
+}
+
+#ifdef CONFIG_SMP
+static void armada_mpic_send_doorbell(const struct cpumask *mask,
+				      unsigned int irq)
+{
+	int cpu;
+	unsigned long map = 0;
+
+	/* Convert our logical CPU mask into a physical one. */
+	for_each_cpu(cpu, mask)
+		map |= 1 << cpu_logical_map(cpu);
+
+	/*
+	 * Ensure that stores to Normal memory are visible to the
+	 * other CPUs before issuing the IPI.
+	 */
+	dsb();
+
+	/* submit softirq */
+	writel((map << 8) | irq, main_int_base +
+		ARMADA_370_XP_SW_TRIG_INT_OFFS);
+}
+
 static int armada_xp_mpic_secondary_init(struct notifier_block *nfb,
 					 unsigned long action, void *hcpu)
 {
-	if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)
+	if (action == CPU_STARTING || action == CPU_STARTING_FROZEN) {
+		armada_xp_mpic_perf_init();
 		armada_xp_mpic_smp_cpu_init();
+	}
 
 	return NOTIFY_OK;
 }
@@ -369,8 +395,10 @@ static struct notifier_block armada_370_xp_mpic_cpu_notifier = {
 static int mpic_cascaded_secondary_init(struct notifier_block *nfb,
 					unsigned long action, void *hcpu)
 {
-	if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)
+	if (action == CPU_STARTING || action == CPU_STARTING_FROZEN) {
+		armada_xp_mpic_perf_init();
 		enable_percpu_irq(parent_irq, IRQ_TYPE_NONE);
+	}
 
 	return NOTIFY_OK;
 }
@@ -379,7 +407,6 @@ static struct notifier_block mpic_cascaded_cpu_notifier = {
 	.notifier_call = mpic_cascaded_secondary_init,
 	.priority = 100,
 };
-
 #endif /* CONFIG_SMP */
 
 static struct irq_domain_ops armada_370_xp_mpic_irq_ops = {
@@ -588,9 +615,9 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node,
 
 	BUG_ON(!armada_370_xp_mpic_domain);
 
-#ifdef CONFIG_SMP
+	/* Setup for the boot CPU */
+	armada_xp_mpic_perf_init();
 	armada_xp_mpic_smp_cpu_init();
-#endif
 
 	armada_370_xp_msi_init(node, main_int_res.start);
 

drivers/irqchip/irq-crossbar.c

@@ -11,11 +11,12 @@
  */
 #include <linux/err.h>
 #include <linux/io.h>
+#include <linux/irqdomain.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/slab.h>
-#include <linux/irqchip/arm-gic.h>
-#include <linux/irqchip/irq-crossbar.h>
+
+#include "irqchip.h"
 
 #define IRQ_FREE	-1
 #define IRQ_RESERVED	-2
@@ -24,6 +25,7 @@
 
 /**
  * struct crossbar_device - crossbar device description
+ * @lock: spinlock serializing access to @irq_map
  * @int_max: maximum number of supported interrupts
  * @safe_map: safe default value to initialize the crossbar
  * @max_crossbar_sources: Maximum number of crossbar sources
@@ -33,6 +35,7 @@
  * @write: register write function pointer
  */
 struct crossbar_device {
+	raw_spinlock_t lock;
 	uint int_max;
 	uint safe_map;
 	uint max_crossbar_sources;
@@ -44,72 +47,101 @@ struct crossbar_device {
 
 static struct crossbar_device *cb;
 
-static inline void crossbar_writel(int irq_no, int cb_no)
+static void crossbar_writel(int irq_no, int cb_no)
 {
 	writel(cb_no, cb->crossbar_base + cb->register_offsets[irq_no]);
 }
 
-static inline void crossbar_writew(int irq_no, int cb_no)
+static void crossbar_writew(int irq_no, int cb_no)
 {
 	writew(cb_no, cb->crossbar_base + cb->register_offsets[irq_no]);
 }
 
-static inline void crossbar_writeb(int irq_no, int cb_no)
+static 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 struct irq_chip crossbar_chip = {
+	.name			= "CBAR",
+	.irq_eoi		= irq_chip_eoi_parent,
+	.irq_mask		= irq_chip_mask_parent,
+	.irq_unmask		= irq_chip_unmask_parent,
+	.irq_retrigger		= irq_chip_retrigger_hierarchy,
+	.irq_set_wake		= irq_chip_set_wake_parent,
+#ifdef CONFIG_SMP
+	.irq_set_affinity	= irq_chip_set_affinity_parent,
+#endif
+};
 
-static inline int allocate_free_irq(int cb_no)
+static int allocate_gic_irq(struct irq_domain *domain, unsigned virq,
+			    irq_hw_number_t hwirq)
 {
+	struct of_phandle_args args;
 	int i;
+	int err;
 
+	raw_spin_lock(&cb->lock);
 	for (i = cb->int_max - 1; i >= 0; i--) {
 		if (cb->irq_map[i] == IRQ_FREE) {
-			cb->irq_map[i] = cb_no;
-			return i;
+			cb->irq_map[i] = hwirq;
+			break;
 		}
 	}
+	raw_spin_unlock(&cb->lock);
 
-	return -ENODEV;
-}
+	if (i < 0)
+		return -ENODEV;
 
-static inline bool needs_crossbar_write(irq_hw_number_t hw)
-{
-	int cb_no;
+	args.np = domain->parent->of_node;
+	args.args_count = 3;
+	args.args[0] = 0;	/* SPI */
+	args.args[1] = i;
+	args.args[2] = IRQ_TYPE_LEVEL_HIGH;
 
-	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;
-	}
+	err = irq_domain_alloc_irqs_parent(domain, virq, 1, &args);
+	if (err)
+		cb->irq_map[i] = IRQ_FREE;
+	else
+		cb->write(i, hwirq);
 
-	return false;
+	return err;
 }
 
-static int crossbar_domain_map(struct irq_domain *d, unsigned int irq,
-			       irq_hw_number_t hw)
+static int crossbar_domain_alloc(struct irq_domain *d, unsigned int virq,
+				 unsigned int nr_irqs, void *data)
 {
-	if (needs_crossbar_write(hw))
-		cb->write(hw - GIC_IRQ_START, cb->irq_map[hw - GIC_IRQ_START]);
+	struct of_phandle_args *args = data;
+	irq_hw_number_t hwirq;
+	int i;
+
+	if (args->args_count != 3)
+		return -EINVAL;	/* Not GIC compliant */
+	if (args->args[0] != 0)
+		return -EINVAL;	/* No PPI should point to this domain */
+
+	hwirq = args->args[1];
+	if ((hwirq + nr_irqs) > cb->max_crossbar_sources)
+		return -EINVAL;	/* Can't deal with this */
+
+	for (i = 0; i < nr_irqs; i++) {
+		int err = allocate_gic_irq(d, virq + i, hwirq + i);
+
+		if (err)
+			return err;
+
+		irq_domain_set_hwirq_and_chip(d, virq + i, hwirq + i,
+					      &crossbar_chip, NULL);
+	}
 
 	return 0;
 }
 
 /**
- * crossbar_domain_unmap - unmap a crossbar<->irq connection
- * @d: domain of irq to unmap
- * @irq: virq number
+ * crossbar_domain_free - unmap/free a crossbar<->irq connection
+ * @domain: domain of irq to unmap
+ * @virq: virq number
+ * @nr_irqs: number of irqs to free
  *
  * 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
@@ -117,14 +149,20 @@ static int crossbar_domain_map(struct irq_domain *d, unsigned int 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)
+static void crossbar_domain_free(struct irq_domain *domain, unsigned int virq,
+				 unsigned int nr_irqs)
 {
-	irq_hw_number_t hw = irq_get_irq_data(irq)->hwirq;
+	int i;
 
-	if (needs_crossbar_write(hw)) {
-		cb->irq_map[hw - GIC_IRQ_START] = IRQ_FREE;
-		cb->write(hw - GIC_IRQ_START, cb->safe_map);
+	raw_spin_lock(&cb->lock);
+	for (i = 0; i < nr_irqs; i++) {
+		struct irq_data *d = irq_domain_get_irq_data(domain, virq + i);
+
+		irq_domain_reset_irq_data(d);
+		cb->irq_map[d->hwirq] = IRQ_FREE;
+		cb->write(d->hwirq, cb->safe_map);
 	}
+	raw_spin_unlock(&cb->lock);
 }
 
 static int crossbar_domain_xlate(struct irq_domain *d,
@@ -133,44 +171,22 @@ static int crossbar_domain_xlate(struct irq_domain *d,
 				 unsigned long *out_hwirq,
 				 unsigned int *out_type)
 {
-	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 = get_prev_map_irq(req_num);
-	if (ret >= 0)
-		goto found;
-
-	ret = allocate_free_irq(req_num);
-
-	if (ret < 0)
-		return ret;
-
-found:
-	*out_hwirq = ret + GIC_IRQ_START;
+	if (d->of_node != controller)
+		return -EINVAL;	/* Shouldn't happen, really... */
+	if (intsize != 3)
+		return -EINVAL;	/* Not GIC compliant */
+	if (intspec[0] != 0)
+		return -EINVAL;	/* No PPI should point to this domain */
+
+	*out_hwirq = intspec[1];
+	*out_type = intspec[2];
 	return 0;
 }
 
-static const struct irq_domain_ops routable_irq_domain_ops = {
-	.map = crossbar_domain_map,
-	.unmap = crossbar_domain_unmap,
-	.xlate = crossbar_domain_xlate
+static const struct irq_domain_ops crossbar_domain_ops = {
+	.alloc	= crossbar_domain_alloc,
+	.free	= crossbar_domain_free,
+	.xlate	= crossbar_domain_xlate,
 };
 
 static int __init crossbar_of_init(struct device_node *node)
@@ -293,7 +309,8 @@ static int __init crossbar_of_init(struct device_node *node)
 		cb->write(i, cb->safe_map);
 	}
 
-	register_routable_domain_ops(&routable_irq_domain_ops);
+	raw_spin_lock_init(&cb->lock);
+
 	return 0;
 
 err_reg_offset:
@@ -309,18 +326,37 @@ static int __init crossbar_of_init(struct device_node *node)
 	return ret;
 }
 
-static const struct of_device_id crossbar_match[] __initconst = {
-	{ .compatible = "ti,irq-crossbar" },
-	{}
-};
-
-int __init irqcrossbar_init(void)
+static int __init irqcrossbar_init(struct device_node *node,
+				   struct device_node *parent)
 {
-	struct device_node *np;
-	np = of_find_matching_node(NULL, crossbar_match);
-	if (!np)
+	struct irq_domain *parent_domain, *domain;
+	int err;
+
+	if (!parent) {
+		pr_err("%s: no parent, giving up\n", node->full_name);
 		return -ENODEV;
+	}
+
+	parent_domain = irq_find_host(parent);
+	if (!parent_domain) {
+		pr_err("%s: unable to obtain parent domain\n", node->full_name);
+		return -ENXIO;
+	}
+
+	err = crossbar_of_init(node);
+	if (err)
+		return err;
+
+	domain = irq_domain_add_hierarchy(parent_domain, 0,
+					  cb->max_crossbar_sources,
+					  node, &crossbar_domain_ops,
+					  NULL);
+	if (!domain) {
+		pr_err("%s: failed to allocated domain\n", node->full_name);
+		return -ENOMEM;
+	}
 
-	crossbar_of_init(np);
 	return 0;
 }
+
+IRQCHIP_DECLARE(ti_irqcrossbar, "ti,irq-crossbar", irqcrossbar_init);

drivers/irqchip/irq-digicolor.c

@@ -55,8 +55,8 @@ static void __exception_irq_entry digicolor_handle_irq(struct pt_regs *regs)
 	} while (1);
 }
 
-static void digicolor_set_gc(void __iomem *reg_base, unsigned irq_base,
-			     unsigned en_reg, unsigned ack_reg)
+static void __init digicolor_set_gc(void __iomem *reg_base, unsigned irq_base,
+				    unsigned en_reg, unsigned ack_reg)
 {
 	struct irq_chip_generic *gc;
 

drivers/irqchip/irq-gic-v3.c

@@ -195,6 +195,19 @@ static void gic_enable_redist(bool enable)
 /*
  * Routines to disable, enable, EOI and route interrupts
  */
+static int gic_peek_irq(struct irq_data *d, u32 offset)
+{
+	u32 mask = 1 << (gic_irq(d) % 32);
+	void __iomem *base;
+
+	if (gic_irq_in_rdist(d))
+		base = gic_data_rdist_sgi_base();
+	else
+		base = gic_data.dist_base;
+
+	return !!(readl_relaxed(base + offset + (gic_irq(d) / 32) * 4) & mask);
+}
+
 static void gic_poke_irq(struct irq_data *d, u32 offset)
 {
 	u32 mask = 1 << (gic_irq(d) % 32);
@@ -223,6 +236,61 @@ static void gic_unmask_irq(struct irq_data *d)
 	gic_poke_irq(d, GICD_ISENABLER);
 }
 
+static int gic_irq_set_irqchip_state(struct irq_data *d,
+				     enum irqchip_irq_state which, bool val)
+{
+	u32 reg;
+
+	if (d->hwirq >= gic_data.irq_nr) /* PPI/SPI only */
+		return -EINVAL;
+
+	switch (which) {
+	case IRQCHIP_STATE_PENDING:
+		reg = val ? GICD_ISPENDR : GICD_ICPENDR;
+		break;
+
+	case IRQCHIP_STATE_ACTIVE:
+		reg = val ? GICD_ISACTIVER : GICD_ICACTIVER;
+		break;
+
+	case IRQCHIP_STATE_MASKED:
+		reg = val ? GICD_ICENABLER : GICD_ISENABLER;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	gic_poke_irq(d, reg);
+	return 0;
+}
+
+static int gic_irq_get_irqchip_state(struct irq_data *d,
+				     enum irqchip_irq_state which, bool *val)
+{
+	if (d->hwirq >= gic_data.irq_nr) /* PPI/SPI only */
+		return -EINVAL;
+
+	switch (which) {
+	case IRQCHIP_STATE_PENDING:
+		*val = gic_peek_irq(d, GICD_ISPENDR);
+		break;
+
+	case IRQCHIP_STATE_ACTIVE:
+		*val = gic_peek_irq(d, GICD_ISACTIVER);
+		break;
+
+	case IRQCHIP_STATE_MASKED:
+		*val = !gic_peek_irq(d, GICD_ISENABLER);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static void gic_eoi_irq(struct irq_data *d)
 {
 	gic_write_eoir(gic_irq(d));
@@ -418,19 +486,6 @@ static void gic_cpu_init(void)
 }
 
 #ifdef CONFIG_SMP
-static int gic_peek_irq(struct irq_data *d, u32 offset)
-{
-	u32 mask = 1 << (gic_irq(d) % 32);
-	void __iomem *base;
-
-	if (gic_irq_in_rdist(d))
-		base = gic_data_rdist_sgi_base();
-	else
-		base = gic_data.dist_base;
-
-	return !!(readl_relaxed(base + offset + (gic_irq(d) / 32) * 4) & mask);
-}
-
 static int gic_secondary_init(struct notifier_block *nfb,
 			      unsigned long action, void *hcpu)
 {
@@ -601,6 +656,8 @@ static struct irq_chip gic_chip = {
 	.irq_eoi		= gic_eoi_irq,
 	.irq_set_type		= gic_set_type,
 	.irq_set_affinity	= gic_set_affinity,
+	.irq_get_irqchip_state	= gic_irq_get_irqchip_state,
+	.irq_set_irqchip_state	= gic_irq_set_irqchip_state,
 };
 
 #define GIC_ID_NR		(1U << gic_data.rdists.id_bits)

drivers/irqchip/irq-gic.c

@@ -151,13 +151,24 @@ static inline unsigned int gic_irq(struct irq_data *d)
 /*
  * Routines to acknowledge, disable and enable interrupts
  */
-static void gic_mask_irq(struct irq_data *d)
+static void gic_poke_irq(struct irq_data *d, u32 offset)
 {
 	u32 mask = 1 << (gic_irq(d) % 32);
+	writel_relaxed(mask, gic_dist_base(d) + offset + (gic_irq(d) / 32) * 4);
+}
+
+static int gic_peek_irq(struct irq_data *d, u32 offset)
+{
+	u32 mask = 1 << (gic_irq(d) % 32);
+	return !!(readl_relaxed(gic_dist_base(d) + offset + (gic_irq(d) / 32) * 4) & mask);
+}
+
+static void gic_mask_irq(struct irq_data *d)
+{
 	unsigned long flags;
 
 	raw_spin_lock_irqsave(&irq_controller_lock, flags);
-	writel_relaxed(mask, gic_dist_base(d) + GIC_DIST_ENABLE_CLEAR + (gic_irq(d) / 32) * 4);
+	gic_poke_irq(d, GIC_DIST_ENABLE_CLEAR);
 	if (gic_arch_extn.irq_mask)
 		gic_arch_extn.irq_mask(d);
 	raw_spin_unlock_irqrestore(&irq_controller_lock, flags);
@@ -165,13 +176,12 @@ static void gic_mask_irq(struct irq_data *d)
 
 static void gic_unmask_irq(struct irq_data *d)
 {
-	u32 mask = 1 << (gic_irq(d) % 32);
 	unsigned long flags;
 
 	raw_spin_lock_irqsave(&irq_controller_lock, flags);
 	if (gic_arch_extn.irq_unmask)
 		gic_arch_extn.irq_unmask(d);
-	writel_relaxed(mask, gic_dist_base(d) + GIC_DIST_ENABLE_SET + (gic_irq(d) / 32) * 4);
+	gic_poke_irq(d, GIC_DIST_ENABLE_SET);
 	raw_spin_unlock_irqrestore(&irq_controller_lock, flags);
 }
 
@@ -186,6 +196,55 @@ static void gic_eoi_irq(struct irq_data *d)
 	writel_relaxed(gic_irq(d), gic_cpu_base(d) + GIC_CPU_EOI);
 }
 
+static int gic_irq_set_irqchip_state(struct irq_data *d,
+				     enum irqchip_irq_state which, bool val)
+{
+	u32 reg;
+
+	switch (which) {
+	case IRQCHIP_STATE_PENDING:
+		reg = val ? GIC_DIST_PENDING_SET : GIC_DIST_PENDING_CLEAR;
+		break;
+
+	case IRQCHIP_STATE_ACTIVE:
+		reg = val ? GIC_DIST_ACTIVE_SET : GIC_DIST_ACTIVE_CLEAR;
+		break;
+
+	case IRQCHIP_STATE_MASKED:
+		reg = val ? GIC_DIST_ENABLE_CLEAR : GIC_DIST_ENABLE_SET;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	gic_poke_irq(d, reg);
+	return 0;
+}
+
+static int gic_irq_get_irqchip_state(struct irq_data *d,
+				      enum irqchip_irq_state which, bool *val)
+{
+	switch (which) {
+	case IRQCHIP_STATE_PENDING:
+		*val = gic_peek_irq(d, GIC_DIST_PENDING_SET);
+		break;
+
+	case IRQCHIP_STATE_ACTIVE:
+		*val = gic_peek_irq(d, GIC_DIST_ACTIVE_SET);
+		break;
+
+	case IRQCHIP_STATE_MASKED:
+		*val = !gic_peek_irq(d, GIC_DIST_ENABLE_SET);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int gic_set_type(struct irq_data *d, unsigned int type)
 {
 	void __iomem *base = gic_dist_base(d);
@@ -329,6 +388,8 @@ static struct irq_chip gic_chip = {
 	.irq_set_affinity	= gic_set_affinity,
 #endif
 	.irq_set_wake		= gic_set_wake,
+	.irq_get_irqchip_state	= gic_irq_get_irqchip_state,
+	.irq_set_irqchip_state	= gic_irq_set_irqchip_state,
 };
 
 void __init gic_cascade_irq(unsigned int gic_nr, unsigned int irq)
@@ -353,7 +414,7 @@ static u8 gic_get_cpumask(struct gic_chip_data *gic)
 			break;
 	}
 
-	if (!mask)
+	if (!mask && num_possible_cpus() > 1)
 		pr_crit("GIC CPU mask not found - kernel will fail to boot.\n");
 
 	return mask;
@@ -802,15 +863,12 @@ static int gic_irq_domain_map(struct irq_domain *d, unsigned int irq,
 		irq_domain_set_info(d, irq, hw, &gic_chip, d->host_data,
 				    handle_fasteoi_irq, NULL, NULL);
 		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-
-		gic_routable_irq_domain_ops->map(d, irq, hw);
 	}
 	return 0;
 }
 
 static void gic_irq_domain_unmap(struct irq_domain *d, unsigned int irq)
 {
-	gic_routable_irq_domain_ops->unmap(d, irq);
 }
 
 static int gic_irq_domain_xlate(struct irq_domain *d,
@@ -829,16 +887,8 @@ static int gic_irq_domain_xlate(struct irq_domain *d,
 	*out_hwirq = intspec[1] + 16;
 
 	/* For SPIs, we need to add 16 more to get the GIC irq ID number */
-	if (!intspec[0]) {
-		ret = gic_routable_irq_domain_ops->xlate(d, controller,
-							 intspec,
-							 intsize,
-							 out_hwirq,
-							 out_type);
-
-		if (IS_ERR_VALUE(ret))
-			return ret;
-	}
+	if (!intspec[0])
+		*out_hwirq += 16;
 
 	*out_type = intspec[2] & IRQ_TYPE_SENSE_MASK;
 
@@ -895,37 +945,11 @@ static const struct irq_domain_ops gic_irq_domain_ops = {
 	.xlate = gic_irq_domain_xlate,
 };
 
-/* Default functions for routable irq domain */
-static int gic_routable_irq_domain_map(struct irq_domain *d, unsigned int irq,
-			      irq_hw_number_t hw)
+void gic_set_irqchip_flags(unsigned long flags)
 {
-	return 0;
+	gic_chip.flags |= flags;
 }
 
-static void gic_routable_irq_domain_unmap(struct irq_domain *d,
-					  unsigned int irq)
-{
-}
-
-static int gic_routable_irq_domain_xlate(struct irq_domain *d,
-				struct device_node *controller,
-				const u32 *intspec, unsigned int intsize,
-				unsigned long *out_hwirq,
-				unsigned int *out_type)
-{
-	*out_hwirq += 16;
-	return 0;
-}
-
-static const struct irq_domain_ops gic_default_routable_irq_domain_ops = {
-	.map = gic_routable_irq_domain_map,
-	.unmap = gic_routable_irq_domain_unmap,
-	.xlate = gic_routable_irq_domain_xlate,
-};
-
-const struct irq_domain_ops *gic_routable_irq_domain_ops =
-					&gic_default_routable_irq_domain_ops;
-
 void __init gic_init_bases(unsigned int gic_nr, int irq_start,
 			   void __iomem *dist_base, void __iomem *cpu_base,
 			   u32 percpu_offset, struct device_node *node)
@@ -933,7 +957,6 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
 	irq_hw_number_t hwirq_base;
 	struct gic_chip_data *gic;
 	int gic_irqs, irq_base, i;
-	int nr_routable_irqs;
 
 	BUG_ON(gic_nr >= MAX_GIC_NR);
 
@@ -989,15 +1012,9 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
 	gic->gic_irqs = gic_irqs;
 
 	if (node) {		/* DT case */
-		const struct irq_domain_ops *ops = &gic_irq_domain_hierarchy_ops;
-
-		if (!of_property_read_u32(node, "arm,routable-irqs",
-					  &nr_routable_irqs)) {
-			ops = &gic_irq_domain_ops;
-			gic_irqs = nr_routable_irqs;
-		}
-
-		gic->domain = irq_domain_add_linear(node, gic_irqs, ops, gic);
+		gic->domain = irq_domain_add_linear(node, gic_irqs,
+						    &gic_irq_domain_hierarchy_ops,
+						    gic);
 	} else {		/* Non-DT case */
 		/*
 		 * For primary GICs, skip over SGIs.

drivers/irqchip/irq-mips-gic.c

@@ -166,6 +166,27 @@ cycle_t gic_read_compare(void)
 
 	return (((cycle_t) hi) << 32) + lo;
 }
+
+void gic_start_count(void)
+{
+	u32 gicconfig;
+
+	/* Start the counter */
+	gicconfig = gic_read(GIC_REG(SHARED, GIC_SH_CONFIG));
+	gicconfig &= ~(1 << GIC_SH_CONFIG_COUNTSTOP_SHF);
+	gic_write(GIC_REG(SHARED, GIC_SH_CONFIG), gicconfig);
+}
+
+void gic_stop_count(void)
+{
+	u32 gicconfig;
+
+	/* Stop the counter */
+	gicconfig = gic_read(GIC_REG(SHARED, GIC_SH_CONFIG));
+	gicconfig |= 1 << GIC_SH_CONFIG_COUNTSTOP_SHF;
+	gic_write(GIC_REG(SHARED, GIC_SH_CONFIG), gicconfig);
+}
+
 #endif
 
 static bool gic_local_irq_is_routable(int intr)

drivers/irqchip/irq-renesas-irqc.c

@@ -17,6 +17,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include <linux/clk.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/spinlock.h>
@@ -29,15 +30,26 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/platform_data/irq-renesas-irqc.h>
+#include <linux/pm_runtime.h>
 
-#define IRQC_IRQ_MAX 32 /* maximum 32 interrupts per driver instance */
+#define IRQC_IRQ_MAX	32	/* maximum 32 interrupts per driver instance */
 
-#define IRQC_REQ_STS 0x00
-#define IRQC_EN_STS 0x04
-#define IRQC_EN_SET 0x08
+#define IRQC_REQ_STS	0x00	/* Interrupt Request Status Register */
+#define IRQC_EN_STS	0x04	/* Interrupt Enable Status Register */
+#define IRQC_EN_SET	0x08	/* Interrupt Enable Set Register */
 #define IRQC_INT_CPU_BASE(n) (0x000 + ((n) * 0x10))
-#define DETECT_STATUS 0x100
+				/* SYS-CPU vs. RT-CPU */
+#define DETECT_STATUS	0x100	/* IRQn Detect Status Register */
+#define MONITOR		0x104	/* IRQn Signal Level Monitor Register */
+#define HLVL_STS	0x108	/* IRQn High Level Detect Status Register */
+#define LLVL_STS	0x10c	/* IRQn Low Level Detect Status Register */
+#define S_R_EDGE_STS	0x110	/* IRQn Sync Rising Edge Detect Status Reg. */
+#define S_F_EDGE_STS	0x114	/* IRQn Sync Falling Edge Detect Status Reg. */
+#define A_R_EDGE_STS	0x118	/* IRQn Async Rising Edge Detect Status Reg. */
+#define A_F_EDGE_STS	0x11c	/* IRQn Async Falling Edge Detect Status Reg. */
+#define CHTEN_STS	0x120	/* Chattering Reduction Status Register */
 #define IRQC_CONFIG(n) (0x180 + ((n) * 0x04))
+				/* IRQn Configuration Register */
 
 struct irqc_irq {
 	int hw_irq;
@@ -55,6 +67,7 @@ struct irqc_priv {
 	struct platform_device *pdev;
 	struct irq_chip irq_chip;
 	struct irq_domain *irq_domain;
+	struct clk *clk;
 };
 
 static void irqc_dbg(struct irqc_irq *i, char *str)
@@ -94,7 +107,7 @@ static int irqc_irq_set_type(struct irq_data *d, unsigned int type)
 	struct irqc_priv *p = irq_data_get_irq_chip_data(d);
 	int hw_irq = irqd_to_hwirq(d);
 	unsigned char value = irqc_sense[type & IRQ_TYPE_SENSE_MASK];
-	unsigned long tmp;
+	u32 tmp;
 
 	irqc_dbg(&p->irq[hw_irq], "sense");
 
@@ -108,11 +121,26 @@ static int irqc_irq_set_type(struct irq_data *d, unsigned int type)
 	return 0;
 }
 
+static int irqc_irq_set_wake(struct irq_data *d, unsigned int on)
+{
+	struct irqc_priv *p = irq_data_get_irq_chip_data(d);
+
+	if (!p->clk)
+		return 0;
+
+	if (on)
+		clk_enable(p->clk);
+	else
+		clk_disable(p->clk);
+
+	return 0;
+}
+
 static irqreturn_t irqc_irq_handler(int irq, void *dev_id)
 {
 	struct irqc_irq *i = dev_id;
 	struct irqc_priv *p = i->p;
-	unsigned long bit = BIT(i->hw_irq);
+	u32 bit = BIT(i->hw_irq);
 
 	irqc_dbg(i, "demux1");
 
@@ -170,6 +198,15 @@ static int irqc_probe(struct platform_device *pdev)
 	p->pdev = pdev;
 	platform_set_drvdata(pdev, p);
 
+	p->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(p->clk)) {
+		dev_warn(&pdev->dev, "unable to get clock\n");
+		p->clk = NULL;
+	}
+
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_get_sync(&pdev->dev);
+
 	/* get hold of manadatory IOMEM */
 	io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!io) {
@@ -210,7 +247,8 @@ static int irqc_probe(struct platform_device *pdev)
 	irq_chip->irq_mask = irqc_irq_disable;
 	irq_chip->irq_unmask = irqc_irq_enable;
 	irq_chip->irq_set_type = irqc_irq_set_type;
-	irq_chip->flags	= IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
+	irq_chip->irq_set_wake = irqc_irq_set_wake;
+	irq_chip->flags	= IRQCHIP_MASK_ON_SUSPEND;
 
 	p->irq_domain = irq_domain_add_simple(pdev->dev.of_node,
 					      p->number_of_irqs,
@@ -250,6 +288,8 @@ static int irqc_probe(struct platform_device *pdev)
 err2:
 	iounmap(p->iomem);
 err1:
+	pm_runtime_put(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
 	kfree(p);
 err0:
 	return ret;
@@ -265,6 +305,8 @@ static int irqc_remove(struct platform_device *pdev)
 
 	irq_domain_remove(p->irq_domain);
 	iounmap(p->iomem);
+	pm_runtime_put(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
 	kfree(p);
 	return 0;
 }

drivers/irqchip/irq-st.c

+/*
+ *  Copyright (C) 2014 STMicroelectronics – All Rights Reserved
+ *
+ *  Author: Lee Jones <lee.jones@linaro.org>
+ *
+ *  This is a re-write of Christophe Kerello's PMU driver.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <dt-bindings/interrupt-controller/irq-st.h>
+#include <linux/err.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define STIH415_SYSCFG_642		0x0a8
+#define STIH416_SYSCFG_7543		0x87c
+#define STIH407_SYSCFG_5102		0x198
+#define STID127_SYSCFG_734		0x088
+
+#define ST_A9_IRQ_MASK			0x001FFFFF
+#define ST_A9_IRQ_MAX_CHANS		2
+
+#define ST_A9_IRQ_EN_CTI_0		BIT(0)
+#define ST_A9_IRQ_EN_CTI_1		BIT(1)
+#define ST_A9_IRQ_EN_PMU_0		BIT(2)
+#define ST_A9_IRQ_EN_PMU_1		BIT(3)
+#define ST_A9_IRQ_EN_PL310_L2		BIT(4)
+#define ST_A9_IRQ_EN_EXT_0		BIT(5)
+#define ST_A9_IRQ_EN_EXT_1		BIT(6)
+#define ST_A9_IRQ_EN_EXT_2		BIT(7)
+
+#define ST_A9_FIQ_N_SEL(dev, chan)	(dev << (8  + (chan * 3)))
+#define ST_A9_IRQ_N_SEL(dev, chan)	(dev << (14 + (chan * 3)))
+#define ST_A9_EXTIRQ_INV_SEL(dev)	(dev << 20)
+
+struct st_irq_syscfg {
+	struct regmap *regmap;
+	unsigned int syscfg;
+	unsigned int config;
+	bool ext_inverted;
+};
+
+static const struct of_device_id st_irq_syscfg_match[] = {
+	{
+		.compatible = "st,stih415-irq-syscfg",
+		.data = (void *)STIH415_SYSCFG_642,
+	},
+	{
+		.compatible = "st,stih416-irq-syscfg",
+		.data = (void *)STIH416_SYSCFG_7543,
+	},
+	{
+		.compatible = "st,stih407-irq-syscfg",
+		.data = (void *)STIH407_SYSCFG_5102,
+	},
+	{
+		.compatible = "st,stid127-irq-syscfg",
+		.data = (void *)STID127_SYSCFG_734,
+	},
+	{}
+};
+
+static int st_irq_xlate(struct platform_device *pdev,
+			int device, int channel, bool irq)
+{
+	struct st_irq_syscfg *ddata = dev_get_drvdata(&pdev->dev);
+
+	/* Set the device enable bit. */
+	switch (device) {
+	case ST_IRQ_SYSCFG_EXT_0:
+		ddata->config |= ST_A9_IRQ_EN_EXT_0;
+		break;
+	case ST_IRQ_SYSCFG_EXT_1:
+		ddata->config |= ST_A9_IRQ_EN_EXT_1;
+		break;
+	case ST_IRQ_SYSCFG_EXT_2:
+		ddata->config |= ST_A9_IRQ_EN_EXT_2;
+		break;
+	case ST_IRQ_SYSCFG_CTI_0:
+		ddata->config |= ST_A9_IRQ_EN_CTI_0;
+		break;
+	case ST_IRQ_SYSCFG_CTI_1:
+		ddata->config |= ST_A9_IRQ_EN_CTI_1;
+		break;
+	case ST_IRQ_SYSCFG_PMU_0:
+		ddata->config |= ST_A9_IRQ_EN_PMU_0;
+		break;
+	case ST_IRQ_SYSCFG_PMU_1:
+		ddata->config |= ST_A9_IRQ_EN_PMU_1;
+		break;
+	case ST_IRQ_SYSCFG_pl310_L2:
+		ddata->config |= ST_A9_IRQ_EN_PL310_L2;
+		break;
+	case ST_IRQ_SYSCFG_DISABLED:
+		return 0;
+	default:
+		dev_err(&pdev->dev, "Unrecognised device %d\n", device);
+		return -EINVAL;
+	}
+
+	/* Select IRQ/FIQ channel for device. */
+	ddata->config |= irq ?
+		ST_A9_IRQ_N_SEL(device, channel) :
+		ST_A9_FIQ_N_SEL(device, channel);
+
+	return 0;
+}
+
+static int st_irq_syscfg_enable(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct st_irq_syscfg *ddata = dev_get_drvdata(&pdev->dev);
+	int channels, ret, i;
+	u32 device, invert;
+
+	channels = of_property_count_u32_elems(np, "st,irq-device");
+	if (channels != ST_A9_IRQ_MAX_CHANS) {
+		dev_err(&pdev->dev, "st,enable-irq-device must have 2 elems\n");
+		return -EINVAL;
+	}
+
+	channels = of_property_count_u32_elems(np, "st,fiq-device");
+	if (channels != ST_A9_IRQ_MAX_CHANS) {
+		dev_err(&pdev->dev, "st,enable-fiq-device must have 2 elems\n");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < ST_A9_IRQ_MAX_CHANS; i++) {
+		of_property_read_u32_index(np, "st,irq-device", i, &device);
+
+		ret = st_irq_xlate(pdev, device, i, true);
+		if (ret)
+			return ret;
+
+		of_property_read_u32_index(np, "st,fiq-device", i, &device);
+
+		ret = st_irq_xlate(pdev, device, i, false);
+		if (ret)
+			return ret;
+	}
+
+	/* External IRQs may be inverted. */
+	of_property_read_u32(np, "st,invert-ext", &invert);
+	ddata->config |= ST_A9_EXTIRQ_INV_SEL(invert);
+
+	return regmap_update_bits(ddata->regmap, ddata->syscfg,
+				  ST_A9_IRQ_MASK, ddata->config);
+}
+
+static int st_irq_syscfg_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	const struct of_device_id *match;
+	struct st_irq_syscfg *ddata;
+
+	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
+	if (!ddata)
+		return -ENOMEM;
+
+	match = of_match_device(st_irq_syscfg_match, &pdev->dev);
+	if (!match)
+		return -ENODEV;
+
+	ddata->syscfg = (unsigned int)match->data;
+
+	ddata->regmap = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
+	if (IS_ERR(ddata->regmap)) {
+		dev_err(&pdev->dev, "syscfg phandle missing\n");
+		return PTR_ERR(ddata->regmap);
+	}
+
+	dev_set_drvdata(&pdev->dev, ddata);
+
+	return st_irq_syscfg_enable(pdev);
+}
+
+static int st_irq_syscfg_resume(struct device *dev)
+{
+	struct st_irq_syscfg *ddata = dev_get_drvdata(dev);
+
+	return regmap_update_bits(ddata->regmap, ddata->syscfg,
+				  ST_A9_IRQ_MASK, ddata->config);
+}
+
+static SIMPLE_DEV_PM_OPS(st_irq_syscfg_pm_ops, NULL, st_irq_syscfg_resume);
+
+static struct platform_driver st_irq_syscfg_driver = {
+	.driver = {
+		.name = "st_irq_syscfg",
+		.pm = &st_irq_syscfg_pm_ops,
+		.of_match_table = st_irq_syscfg_match,
+	},
+	.probe = st_irq_syscfg_probe,
+};
+
+static int __init st_irq_syscfg_init(void)
+{
+	return platform_driver_register(&st_irq_syscfg_driver);
+}
+core_initcall(st_irq_syscfg_init);

drivers/irqchip/irq-tegra.c

+/*
+ * Driver code for Tegra's Legacy Interrupt Controller
+ *
+ * Author: Marc Zyngier <marc.zyngier@arm.com>
+ *
+ * Heavily based on the original arch/arm/mach-tegra/irq.c code:
+ * Copyright (C) 2011 Google, Inc.
+ *
+ * Author:
+ *	Colin Cross <ccross@android.com>
+ *
+ * Copyright (C) 2010,2013, NVIDIA Corporation
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/syscore_ops.h>
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+#include "irqchip.h"
+
+#define ICTLR_CPU_IEP_VFIQ	0x08
+#define ICTLR_CPU_IEP_FIR	0x14
+#define ICTLR_CPU_IEP_FIR_SET	0x18
+#define ICTLR_CPU_IEP_FIR_CLR	0x1c
+
+#define ICTLR_CPU_IER		0x20
+#define ICTLR_CPU_IER_SET	0x24
+#define ICTLR_CPU_IER_CLR	0x28
+#define ICTLR_CPU_IEP_CLASS	0x2C
+
+#define ICTLR_COP_IER		0x30
+#define ICTLR_COP_IER_SET	0x34
+#define ICTLR_COP_IER_CLR	0x38
+#define ICTLR_COP_IEP_CLASS	0x3c
+
+#define TEGRA_MAX_NUM_ICTLRS	6
+
+static unsigned int num_ictlrs;
+
+struct tegra_ictlr_soc {
+	unsigned int num_ictlrs;
+};
+
+static const struct tegra_ictlr_soc tegra20_ictlr_soc = {
+	.num_ictlrs = 4,
+};
+
+static const struct tegra_ictlr_soc tegra30_ictlr_soc = {
+	.num_ictlrs = 5,
+};
+
+static const struct tegra_ictlr_soc tegra210_ictlr_soc = {
+	.num_ictlrs = 6,
+};
+
+static const struct of_device_id ictlr_matches[] = {
+	{ .compatible = "nvidia,tegra210-ictlr", .data = &tegra210_ictlr_soc },
+	{ .compatible = "nvidia,tegra30-ictlr", .data = &tegra30_ictlr_soc },
+	{ .compatible = "nvidia,tegra20-ictlr", .data = &tegra20_ictlr_soc },
+	{ }
+};
+
+struct tegra_ictlr_info {
+	void __iomem *base[TEGRA_MAX_NUM_ICTLRS];
+#ifdef CONFIG_PM_SLEEP
+	u32 cop_ier[TEGRA_MAX_NUM_ICTLRS];
+	u32 cop_iep[TEGRA_MAX_NUM_ICTLRS];
+	u32 cpu_ier[TEGRA_MAX_NUM_ICTLRS];
+	u32 cpu_iep[TEGRA_MAX_NUM_ICTLRS];
+
+	u32 ictlr_wake_mask[TEGRA_MAX_NUM_ICTLRS];
+#endif
+};
+
+static struct tegra_ictlr_info *lic;
+
+static inline void tegra_ictlr_write_mask(struct irq_data *d, unsigned long reg)
+{
+	void __iomem *base = d->chip_data;
+	u32 mask;
+
+	mask = BIT(d->hwirq % 32);
+	writel_relaxed(mask, base + reg);
+}
+
+static void tegra_mask(struct irq_data *d)
+{
+	tegra_ictlr_write_mask(d, ICTLR_CPU_IER_CLR);
+	irq_chip_mask_parent(d);
+}
+
+static void tegra_unmask(struct irq_data *d)
+{
+	tegra_ictlr_write_mask(d, ICTLR_CPU_IER_SET);
+	irq_chip_unmask_parent(d);
+}
+
+static void tegra_eoi(struct irq_data *d)
+{
+	tegra_ictlr_write_mask(d, ICTLR_CPU_IEP_FIR_CLR);
+	irq_chip_eoi_parent(d);
+}
+
+static int tegra_retrigger(struct irq_data *d)
+{
+	tegra_ictlr_write_mask(d, ICTLR_CPU_IEP_FIR_SET);
+	return irq_chip_retrigger_hierarchy(d);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int tegra_set_wake(struct irq_data *d, unsigned int enable)
+{
+	u32 irq = d->hwirq;
+	u32 index, mask;
+
+	index = (irq / 32);
+	mask = BIT(irq % 32);
+	if (enable)
+		lic->ictlr_wake_mask[index] |= mask;
+	else
+		lic->ictlr_wake_mask[index] &= ~mask;
+
+	/*
+	 * Do *not* call into the parent, as the GIC doesn't have any
+	 * wake-up facility...
+	 */
+	return 0;
+}
+
+static int tegra_ictlr_suspend(void)
+{
+	unsigned long flags;
+	unsigned int i;
+
+	local_irq_save(flags);
+	for (i = 0; i < num_ictlrs; i++) {
+		void __iomem *ictlr = lic->base[i];
+
+		/* Save interrupt state */
+		lic->cpu_ier[i] = readl_relaxed(ictlr + ICTLR_CPU_IER);
+		lic->cpu_iep[i] = readl_relaxed(ictlr + ICTLR_CPU_IEP_CLASS);
+		lic->cop_ier[i] = readl_relaxed(ictlr + ICTLR_COP_IER);
+		lic->cop_iep[i] = readl_relaxed(ictlr + ICTLR_COP_IEP_CLASS);
+
+		/* Disable COP interrupts */
+		writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR);
+
+		/* Disable CPU interrupts */
+		writel_relaxed(~0ul, ictlr + ICTLR_CPU_IER_CLR);
+
+		/* Enable the wakeup sources of ictlr */
+		writel_relaxed(lic->ictlr_wake_mask[i], ictlr + ICTLR_CPU_IER_SET);
+	}
+	local_irq_restore(flags);
+
+	return 0;
+}
+
+static void tegra_ictlr_resume(void)
+{
+	unsigned long flags;
+	unsigned int i;
+
+	local_irq_save(flags);
+	for (i = 0; i < num_ictlrs; i++) {
+		void __iomem *ictlr = lic->base[i];
+
+		writel_relaxed(lic->cpu_iep[i],
+			       ictlr + ICTLR_CPU_IEP_CLASS);
+		writel_relaxed(~0ul, ictlr + ICTLR_CPU_IER_CLR);
+		writel_relaxed(lic->cpu_ier[i],
+			       ictlr + ICTLR_CPU_IER_SET);
+		writel_relaxed(lic->cop_iep[i],
+			       ictlr + ICTLR_COP_IEP_CLASS);
+		writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR);
+		writel_relaxed(lic->cop_ier[i],
+			       ictlr + ICTLR_COP_IER_SET);
+	}
+	local_irq_restore(flags);
+}
+
+static struct syscore_ops tegra_ictlr_syscore_ops = {
+	.suspend	= tegra_ictlr_suspend,
+	.resume		= tegra_ictlr_resume,
+};
+
+static void tegra_ictlr_syscore_init(void)
+{
+	register_syscore_ops(&tegra_ictlr_syscore_ops);
+}
+#else
+#define tegra_set_wake	NULL
+static inline void tegra_ictlr_syscore_init(void) {}
+#endif
+
+static struct irq_chip tegra_ictlr_chip = {
+	.name			= "LIC",
+	.irq_eoi		= tegra_eoi,
+	.irq_mask		= tegra_mask,
+	.irq_unmask		= tegra_unmask,
+	.irq_retrigger		= tegra_retrigger,
+	.irq_set_wake		= tegra_set_wake,
+	.flags			= IRQCHIP_MASK_ON_SUSPEND,
+#ifdef CONFIG_SMP
+	.irq_set_affinity	= irq_chip_set_affinity_parent,
+#endif
+};
+
+static int tegra_ictlr_domain_xlate(struct irq_domain *domain,
+				    struct device_node *controller,
+				    const u32 *intspec,
+				    unsigned int intsize,
+				    unsigned long *out_hwirq,
+				    unsigned int *out_type)
+{
+	if (domain->of_node != controller)
+		return -EINVAL;	/* Shouldn't happen, really... */
+	if (intsize != 3)
+		return -EINVAL;	/* Not GIC compliant */
+	if (intspec[0] != GIC_SPI)
+		return -EINVAL;	/* No PPI should point to this domain */
+
+	*out_hwirq = intspec[1];
+	*out_type = intspec[2];
+	return 0;
+}
+
+static int tegra_ictlr_domain_alloc(struct irq_domain *domain,
+				    unsigned int virq,
+				    unsigned int nr_irqs, void *data)
+{
+	struct of_phandle_args *args = data;
+	struct of_phandle_args parent_args;
+	struct tegra_ictlr_info *info = domain->host_data;
+	irq_hw_number_t hwirq;
+	unsigned int i;
+
+	if (args->args_count != 3)
+		return -EINVAL;	/* Not GIC compliant */
+	if (args->args[0] != GIC_SPI)
+		return -EINVAL;	/* No PPI should point to this domain */
+
+	hwirq = args->args[1];
+	if (hwirq >= (num_ictlrs * 32))
+		return -EINVAL;
+
+	for (i = 0; i < nr_irqs; i++) {
+		int ictlr = (hwirq + i) / 32;
+
+		irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i,
+					      &tegra_ictlr_chip,
+					      &info->base[ictlr]);
+	}
+
+	parent_args = *args;
+	parent_args.np = domain->parent->of_node;
+	return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &parent_args);
+}
+
+static void tegra_ictlr_domain_free(struct irq_domain *domain,
+				    unsigned int virq,
+				    unsigned int nr_irqs)
+{
+	unsigned int i;
+
+	for (i = 0; i < nr_irqs; i++) {
+		struct irq_data *d = irq_domain_get_irq_data(domain, virq + i);
+		irq_domain_reset_irq_data(d);
+	}
+}
+
+static const struct irq_domain_ops tegra_ictlr_domain_ops = {
+	.xlate	= tegra_ictlr_domain_xlate,
+	.alloc	= tegra_ictlr_domain_alloc,
+	.free	= tegra_ictlr_domain_free,
+};
+
+static int __init tegra_ictlr_init(struct device_node *node,
+				   struct device_node *parent)
+{
+	struct irq_domain *parent_domain, *domain;
+	const struct of_device_id *match;
+	const struct tegra_ictlr_soc *soc;
+	unsigned int i;
+	int err;
+
+	if (!parent) {
+		pr_err("%s: no parent, giving up\n", node->full_name);
+		return -ENODEV;
+	}
+
+	parent_domain = irq_find_host(parent);
+	if (!parent_domain) {
+		pr_err("%s: unable to obtain parent domain\n", node->full_name);
+		return -ENXIO;
+	}
+
+	match = of_match_node(ictlr_matches, node);
+	if (!match)		/* Should never happen... */
+		return -ENODEV;
+
+	soc = match->data;
+
+	lic = kzalloc(sizeof(*lic), GFP_KERNEL);
+	if (!lic)
+		return -ENOMEM;
+
+	for (i = 0; i < TEGRA_MAX_NUM_ICTLRS; i++) {
+		void __iomem *base;
+
+		base = of_iomap(node, i);
+		if (!base)
+			break;
+
+		lic->base[i] = base;
+
+		/* Disable all interrupts */
+		writel_relaxed(~0UL, base + ICTLR_CPU_IER_CLR);
+		/* All interrupts target IRQ */
+		writel_relaxed(0, base + ICTLR_CPU_IEP_CLASS);
+
+		num_ictlrs++;
+	}
+
+	if (!num_ictlrs) {
+		pr_err("%s: no valid regions, giving up\n", node->full_name);
+		err = -ENOMEM;
+		goto out_free;
+	}
+
+	WARN(num_ictlrs != soc->num_ictlrs,
+	     "%s: Found %u interrupt controllers in DT; expected %u.\n",
+	     node->full_name, num_ictlrs, soc->num_ictlrs);
+
+
+	domain = irq_domain_add_hierarchy(parent_domain, 0, num_ictlrs * 32,
+					  node, &tegra_ictlr_domain_ops,
+					  lic);
+	if (!domain) {
+		pr_err("%s: failed to allocated domain\n", node->full_name);
+		err = -ENOMEM;
+		goto out_unmap;
+	}
+
+	tegra_ictlr_syscore_init();
+
+	pr_info("%s: %d interrupts forwarded to %s\n",
+		node->full_name, num_ictlrs * 32, parent->full_name);
+
+	return 0;
+
+out_unmap:
+	for (i = 0; i < num_ictlrs; i++)
+		iounmap(lic->base[i]);
+out_free:
+	kfree(lic);
+	return err;
+}
+
+IRQCHIP_DECLARE(tegra20_ictlr, "nvidia,tegra20-ictlr", tegra_ictlr_init);
+IRQCHIP_DECLARE(tegra30_ictlr, "nvidia,tegra30-ictlr", tegra_ictlr_init);
+IRQCHIP_DECLARE(tegra210_ictlr, "nvidia,tegra210-ictlr", tegra_ictlr_init);

drivers/irqchip/irq-vf610-mscm-ir.c

+/*
+ * Copyright (C) 2014-2015 Toradex AG
+ * Author: Stefan Agner <stefan@agner.ch>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *
+ * IRQ chip driver for MSCM interrupt router available on Vybrid SoC's.
+ * The interrupt router is between the CPU's interrupt controller and the
+ * peripheral. The router allows to route the peripheral interrupts to
+ * one of the two available CPU's on Vybrid VF6xx SoC's (Cortex-A5 or
+ * Cortex-M4). The router will be configured transparently on a IRQ
+ * request.
+ *
+ * o All peripheral interrupts of the Vybrid SoC can be routed to
+ *   CPU 0, CPU 1 or both. The routing is useful for dual-core
+ *   variants of Vybrid SoC such as VF6xx. This driver routes the
+ *   requested interrupt to the CPU currently running on.
+ *
+ * o It is required to setup the interrupt router even on single-core
+ *   variants of Vybrid.
+ */
+
+#include <linux/cpu_pm.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/mfd/syscon.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+
+#include "irqchip.h"
+
+#define MSCM_CPxNUM		0x4
+
+#define MSCM_IRSPRC(n)		(0x80 + 2 * (n))
+#define MSCM_IRSPRC_CPEN_MASK	0x3
+
+#define MSCM_IRSPRC_NUM		112
+
+struct vf610_mscm_ir_chip_data {
+	void __iomem *mscm_ir_base;
+	u16 cpu_mask;
+	u16 saved_irsprc[MSCM_IRSPRC_NUM];
+};
+
+static struct vf610_mscm_ir_chip_data *mscm_ir_data;
+
+static inline void vf610_mscm_ir_save(struct vf610_mscm_ir_chip_data *data)
+{
+	int i;
+
+	for (i = 0; i < MSCM_IRSPRC_NUM; i++)
+		data->saved_irsprc[i] = readw_relaxed(data->mscm_ir_base + MSCM_IRSPRC(i));
+}
+
+static inline void vf610_mscm_ir_restore(struct vf610_mscm_ir_chip_data *data)
+{
+	int i;
+
+	for (i = 0; i < MSCM_IRSPRC_NUM; i++)
+		writew_relaxed(data->saved_irsprc[i], data->mscm_ir_base + MSCM_IRSPRC(i));
+}
+
+static int vf610_mscm_ir_notifier(struct notifier_block *self,
+				  unsigned long cmd, void *v)
+{
+	switch (cmd) {
+	case CPU_CLUSTER_PM_ENTER:
+		vf610_mscm_ir_save(mscm_ir_data);
+		break;
+	case CPU_CLUSTER_PM_ENTER_FAILED:
+	case CPU_CLUSTER_PM_EXIT:
+		vf610_mscm_ir_restore(mscm_ir_data);
+		break;
+	}
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block mscm_ir_notifier_block = {
+	.notifier_call = vf610_mscm_ir_notifier,
+};
+
+static void vf610_mscm_ir_enable(struct irq_data *data)
+{
+	irq_hw_number_t hwirq = data->hwirq;
+	struct vf610_mscm_ir_chip_data *chip_data = data->chip_data;
+	u16 irsprc;
+
+	irsprc = readw_relaxed(chip_data->mscm_ir_base + MSCM_IRSPRC(hwirq));
+	irsprc &= MSCM_IRSPRC_CPEN_MASK;
+
+	WARN_ON(irsprc & ~chip_data->cpu_mask);
+
+	writew_relaxed(chip_data->cpu_mask,
+		       chip_data->mscm_ir_base + MSCM_IRSPRC(hwirq));
+
+	irq_chip_unmask_parent(data);
+}
+
+static void vf610_mscm_ir_disable(struct irq_data *data)
+{
+	irq_hw_number_t hwirq = data->hwirq;
+	struct vf610_mscm_ir_chip_data *chip_data = data->chip_data;
+
+	writew_relaxed(0x0, chip_data->mscm_ir_base + MSCM_IRSPRC(hwirq));
+
+	irq_chip_mask_parent(data);
+}
+
+static struct irq_chip vf610_mscm_ir_irq_chip = {
+	.name			= "mscm-ir",
+	.irq_mask		= irq_chip_mask_parent,
+	.irq_unmask		= irq_chip_unmask_parent,
+	.irq_eoi		= irq_chip_eoi_parent,
+	.irq_enable		= vf610_mscm_ir_enable,
+	.irq_disable		= vf610_mscm_ir_disable,
+	.irq_retrigger		= irq_chip_retrigger_hierarchy,
+	.irq_set_affinity	= irq_chip_set_affinity_parent,
+};
+
+static int vf610_mscm_ir_domain_alloc(struct irq_domain *domain, unsigned int virq,
+				      unsigned int nr_irqs, void *arg)
+{
+	int i;
+	irq_hw_number_t hwirq;
+	struct of_phandle_args *irq_data = arg;
+	struct of_phandle_args gic_data;
+
+	if (irq_data->args_count != 2)
+		return -EINVAL;
+
+	hwirq = irq_data->args[0];
+	for (i = 0; i < nr_irqs; i++)
+		irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i,
+					      &vf610_mscm_ir_irq_chip,
+					      domain->host_data);
+
+	gic_data.np = domain->parent->of_node;
+	gic_data.args_count = 3;
+	gic_data.args[0] = GIC_SPI;
+	gic_data.args[1] = irq_data->args[0];
+	gic_data.args[2] = irq_data->args[1];
+	return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &gic_data);
+}
+
+static const struct irq_domain_ops mscm_irq_domain_ops = {
+	.xlate = irq_domain_xlate_twocell,
+	.alloc = vf610_mscm_ir_domain_alloc,
+	.free = irq_domain_free_irqs_common,
+};
+
+static int __init vf610_mscm_ir_of_init(struct device_node *node,
+			       struct device_node *parent)
+{
+	struct irq_domain *domain, *domain_parent;
+	struct regmap *mscm_cp_regmap;
+	int ret, cpuid;
+
+	domain_parent = irq_find_host(parent);
+	if (!domain_parent) {
+		pr_err("vf610_mscm_ir: interrupt-parent not found\n");
+		return -EINVAL;
+	}
+
+	mscm_ir_data = kzalloc(sizeof(*mscm_ir_data), GFP_KERNEL);
+	if (!mscm_ir_data)
+		return -ENOMEM;
+
+	mscm_ir_data->mscm_ir_base = of_io_request_and_map(node, 0, "mscm-ir");
+
+	if (!mscm_ir_data->mscm_ir_base) {
+		pr_err("vf610_mscm_ir: unable to map mscm register\n");
+		ret = -ENOMEM;
+		goto out_free;
+	}
+
+	mscm_cp_regmap = syscon_regmap_lookup_by_phandle(node, "fsl,cpucfg");
+	if (IS_ERR(mscm_cp_regmap)) {
+		ret = PTR_ERR(mscm_cp_regmap);
+		pr_err("vf610_mscm_ir: regmap lookup for cpucfg failed\n");
+		goto out_unmap;
+	}
+
+	regmap_read(mscm_cp_regmap, MSCM_CPxNUM, &cpuid);
+	mscm_ir_data->cpu_mask = 0x1 << cpuid;
+
+	domain = irq_domain_add_hierarchy(domain_parent, 0,
+					  MSCM_IRSPRC_NUM, node,
+					  &mscm_irq_domain_ops, mscm_ir_data);
+	if (!domain) {
+		ret = -ENOMEM;
+		goto out_unmap;
+	}
+
+	cpu_pm_register_notifier(&mscm_ir_notifier_block);
+
+	return 0;
+
+out_unmap:
+	iounmap(mscm_ir_data->mscm_ir_base);
+out_free:
+	kfree(mscm_ir_data);
+	return ret;
+}
+IRQCHIP_DECLARE(vf610_mscm_ir, "fsl,vf610-mscm-ir", vf610_mscm_ir_of_init);

drivers/mtd/nand/hisi504_nand.c

@@ -758,8 +758,7 @@ static int hisi_nfc_probe(struct platform_device *pdev)
 
 	hisi_nfc_host_init(host);
 
-	ret = devm_request_irq(dev, irq, hinfc_irq_handle, IRQF_DISABLED,
-				"nandc", host);
+	ret = devm_request_irq(dev, irq, hinfc_irq_handle, 0x0, "nandc", host);
 	if (ret) {
 		dev_err(dev, "failed to request IRQ\n");
 		goto err_res;

include/dt-bindings/interrupt-controller/irq-st.h

+/*
+ *  include/linux/irqchip/irq-st.h
+ *
+ *  Copyright (C) 2014 STMicroelectronics – All Rights Reserved
+ *
+ *  Author: Lee Jones <lee.jones@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _DT_BINDINGS_INTERRUPT_CONTROLLER_ST_H
+#define _DT_BINDINGS_INTERRUPT_CONTROLLER_ST_H
+
+#define ST_IRQ_SYSCFG_EXT_0		0
+#define ST_IRQ_SYSCFG_EXT_1		1
+#define ST_IRQ_SYSCFG_EXT_2		2
+#define ST_IRQ_SYSCFG_CTI_0		3
+#define ST_IRQ_SYSCFG_CTI_1		4
+#define ST_IRQ_SYSCFG_PMU_0		5
+#define ST_IRQ_SYSCFG_PMU_1		6
+#define ST_IRQ_SYSCFG_pl310_L2		7
+#define ST_IRQ_SYSCFG_DISABLED		0xFFFFFFFF
+
+#define ST_IRQ_SYSCFG_EXT_1_INV		0x1
+#define ST_IRQ_SYSCFG_EXT_2_INV		0x2
+#define ST_IRQ_SYSCFG_EXT_3_INV		0x4
+
+#endif

include/linux/hardirq.h

@@ -9,7 +9,7 @@
 
 
 extern void synchronize_irq(unsigned int irq);
-extern void synchronize_hardirq(unsigned int irq);
+extern bool synchronize_hardirq(unsigned int irq);
 
 #if defined(CONFIG_TINY_RCU)
 

include/linux/interrupt.h

@@ -39,8 +39,6 @@
  * These flags used only by the kernel as part of the
  * irq handling routines.
  *
- * IRQF_DISABLED - keep irqs disabled when calling the action handler.
- *                 DEPRECATED. This flag is a NOOP and scheduled to be removed
  * IRQF_SHARED - allow sharing the irq among several devices
  * IRQF_PROBE_SHARED - set by callers when they expect sharing mismatches to occur
  * IRQF_TIMER - Flag to mark this interrupt as timer interrupt
@@ -64,7 +62,6 @@
  *                wakeup devices users need to implement wakeup detection in
  *                their interrupt handlers.
  */
-#define IRQF_DISABLED		0x00000020
 #define IRQF_SHARED		0x00000080
 #define IRQF_PROBE_SHARED	0x00000100
 #define __IRQF_TIMER		0x00000200
@@ -191,6 +188,7 @@ extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id);
 #endif
 
 extern void disable_irq_nosync(unsigned int irq);
+extern bool disable_hardirq(unsigned int irq);
 extern void disable_irq(unsigned int irq);
 extern void disable_percpu_irq(unsigned int irq);
 extern void enable_irq(unsigned int irq);
@@ -363,6 +361,20 @@ static inline int disable_irq_wake(unsigned int irq)
 	return irq_set_irq_wake(irq, 0);
 }
 
+/*
+ * irq_get_irqchip_state/irq_set_irqchip_state specific flags
+ */
+enum irqchip_irq_state {
+	IRQCHIP_STATE_PENDING,		/* Is interrupt pending? */
+	IRQCHIP_STATE_ACTIVE,		/* Is interrupt in progress? */
+	IRQCHIP_STATE_MASKED,		/* Is interrupt masked? */
+	IRQCHIP_STATE_LINE_LEVEL,	/* Is IRQ line high? */
+};
+
+extern int irq_get_irqchip_state(unsigned int irq, enum irqchip_irq_state which,
+				 bool *state);
+extern int irq_set_irqchip_state(unsigned int irq, enum irqchip_irq_state which,
+				 bool state);
 
 #ifdef CONFIG_IRQ_FORCED_THREADING
 extern bool force_irqthreads;

include/linux/irq.h

@@ -30,6 +30,7 @@
 struct seq_file;
 struct module;
 struct msi_msg;
+enum irqchip_irq_state;
 
 /*
  * IRQ line status.
@@ -324,6 +325,8 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
  *				irq_request_resources
  * @irq_compose_msi_msg:	optional to compose message content for MSI
  * @irq_write_msi_msg:	optional to write message content for MSI
+ * @irq_get_irqchip_state:	return the internal state of an interrupt
+ * @irq_set_irqchip_state:	set the internal state of a interrupt
  * @flags:		chip specific flags
  */
 struct irq_chip {
@@ -363,6 +366,9 @@ struct irq_chip {
 	void		(*irq_compose_msi_msg)(struct irq_data *data, struct msi_msg *msg);
 	void		(*irq_write_msi_msg)(struct irq_data *data, struct msi_msg *msg);
 
+	int		(*irq_get_irqchip_state)(struct irq_data *data, enum irqchip_irq_state which, bool *state);
+	int		(*irq_set_irqchip_state)(struct irq_data *data, enum irqchip_irq_state which, bool state);
+
 	unsigned long	flags;
 };
 
@@ -460,6 +466,7 @@ extern void irq_chip_eoi_parent(struct irq_data *data);
 extern int irq_chip_set_affinity_parent(struct irq_data *data,
 					const struct cpumask *dest,
 					bool force);
+extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on);
 #endif
 
 /* Handling of unhandled and spurious interrupts: */

include/linux/irqchip/arm-gic.h

@@ -97,6 +97,7 @@ struct device_node;
 
 extern struct irq_chip gic_arch_extn;
 
+void gic_set_irqchip_flags(unsigned long flags);
 void gic_init_bases(unsigned int, int, void __iomem *, void __iomem *,
 		    u32 offset, struct device_node *);
 void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
@@ -115,11 +116,5 @@ int gic_get_cpu_id(unsigned int cpu);
 void gic_migrate_target(unsigned int new_cpu_id);
 unsigned long gic_get_sgir_physaddr(void);
 
-extern const struct irq_domain_ops *gic_routable_irq_domain_ops;
-static inline void __init register_routable_domain_ops
-					(const struct irq_domain_ops *ops)
-{
-	gic_routable_irq_domain_ops = ops;
-}
 #endif /* __ASSEMBLY */
 #endif

include/linux/irqchip/irq-crossbar.h

-/*
- *  drivers/irqchip/irq-crossbar.h
- *
- *  Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-int irqcrossbar_init(void);

include/linux/irqchip/mips-gic.h

@@ -240,6 +240,8 @@ extern unsigned int gic_get_count_width(void);
 extern cycle_t gic_read_compare(void);
 extern void gic_write_compare(cycle_t cnt);
 extern void gic_write_cpu_compare(cycle_t cnt, int cpu);
+extern void gic_start_count(void);
+extern void gic_stop_count(void);
 extern void gic_send_ipi(unsigned int intr);
 extern unsigned int plat_ipi_call_int_xlate(unsigned int);
 extern unsigned int plat_ipi_resched_int_xlate(unsigned int);

include/linux/irqflags.h

@@ -85,7 +85,7 @@
  * The local_irq_*() APIs are equal to the raw_local_irq*()
  * if !TRACE_IRQFLAGS.
  */
-#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
+#ifdef CONFIG_TRACE_IRQFLAGS
 #define local_irq_enable() \
 	do { trace_hardirqs_on(); raw_local_irq_enable(); } while (0)
 #define local_irq_disable() \
@@ -107,22 +107,6 @@
 			raw_local_irq_restore(flags);	\
 		}					\
 	} while (0)
-#define local_save_flags(flags)				\
-	do {						\
-		raw_local_save_flags(flags);		\
-	} while (0)
-
-#define irqs_disabled_flags(flags)			\
-	({						\
-		raw_irqs_disabled_flags(flags);		\
-	})
-
-#define irqs_disabled()					\
-	({						\
-		unsigned long _flags;			\
-		raw_local_save_flags(_flags);		\
-		raw_irqs_disabled_flags(_flags);	\
-	})
 
 #define safe_halt()				\
 	do {					\
@@ -131,7 +115,7 @@
 	} while (0)
 
 
-#else /* !CONFIG_TRACE_IRQFLAGS_SUPPORT */
+#else /* !CONFIG_TRACE_IRQFLAGS */
 
 #define local_irq_enable()	do { raw_local_irq_enable(); } while (0)
 #define local_irq_disable()	do { raw_local_irq_disable(); } while (0)
@@ -140,11 +124,28 @@
 		raw_local_irq_save(flags);			\
 	} while (0)
 #define local_irq_restore(flags) do { raw_local_irq_restore(flags); } while (0)
-#define local_save_flags(flags)	do { raw_local_save_flags(flags); } while (0)
-#define irqs_disabled()		(raw_irqs_disabled())
-#define irqs_disabled_flags(flags) (raw_irqs_disabled_flags(flags))
 #define safe_halt()		do { raw_safe_halt(); } while (0)
 
+#endif /* CONFIG_TRACE_IRQFLAGS */
+
+#define local_save_flags(flags)	raw_local_save_flags(flags)
+
+/*
+ * Some architectures don't define arch_irqs_disabled(), so even if either
+ * definition would be fine we need to use different ones for the time being
+ * to avoid build issues.
+ */
+#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
+#define irqs_disabled()					\
+	({						\
+		unsigned long _flags;			\
+		raw_local_save_flags(_flags);		\
+		raw_irqs_disabled_flags(_flags);	\
+	})
+#else /* !CONFIG_TRACE_IRQFLAGS_SUPPORT */
+#define irqs_disabled()	raw_irqs_disabled()
 #endif /* CONFIG_TRACE_IRQFLAGS_SUPPORT */
 
+#define irqs_disabled_flags(flags) raw_irqs_disabled_flags(flags)
+
 #endif

kernel/irq/chip.c

@@ -948,6 +948,22 @@ int irq_chip_retrigger_hierarchy(struct irq_data *data)
 
 	return -ENOSYS;
 }
+
+/**
+ * irq_chip_set_wake_parent - Set/reset wake-up on the parent interrupt
+ * @data:	Pointer to interrupt specific data
+ * @on:		Whether to set or reset the wake-up capability of this irq
+ *
+ * Conditional, as the underlying parent chip might not implement it.
+ */
+int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on)
+{
+	data = data->parent_data;
+	if (data->chip->irq_set_wake)
+		return data->chip->irq_set_wake(data, on);
+
+	return -ENOSYS;
+}
 #endif
 
 /**

kernel/irq/manage.c

@@ -68,14 +68,20 @@ static void __synchronize_hardirq(struct irq_desc *desc)
  *	Do not use this for shutdown scenarios where you must be sure
  *	that all parts (hardirq and threaded handler) have completed.
  *
+ *	Returns: false if a threaded handler is active.
+ *
  *	This function may be called - with care - from IRQ context.
  */
-void synchronize_hardirq(unsigned int irq)
+bool synchronize_hardirq(unsigned int irq)
 {
 	struct irq_desc *desc = irq_to_desc(irq);
 
-	if (desc)
+	if (desc) {
 		__synchronize_hardirq(desc);
+		return !atomic_read(&desc->threads_active);
+	}
+
+	return true;
 }
 EXPORT_SYMBOL(synchronize_hardirq);
 
@@ -440,6 +446,32 @@ void disable_irq(unsigned int irq)
 }
 EXPORT_SYMBOL(disable_irq);
 
+/**
+ *	disable_hardirq - disables an irq and waits for hardirq completion
+ *	@irq: Interrupt to disable
+ *
+ *	Disable the selected interrupt line.  Enables and Disables are
+ *	nested.
+ *	This function waits for any pending hard IRQ handlers for this
+ *	interrupt to complete before returning. If you use this function while
+ *	holding a resource the hard IRQ handler may need you will deadlock.
+ *
+ *	When used to optimistically disable an interrupt from atomic context
+ *	the return value must be checked.
+ *
+ *	Returns: false if a threaded handler is active.
+ *
+ *	This function may be called - with care - from IRQ context.
+ */
+bool disable_hardirq(unsigned int irq)
+{
+	if (!__disable_irq_nosync(irq))
+		return synchronize_hardirq(irq);
+
+	return false;
+}
+EXPORT_SYMBOL_GPL(disable_hardirq);
+
 void __enable_irq(struct irq_desc *desc, unsigned int irq)
 {
 	switch (desc->depth) {
@@ -1766,3 +1798,94 @@ int request_percpu_irq(unsigned int irq, irq_handler_t handler,
 
 	return retval;
 }
+
+/**
+ *	irq_get_irqchip_state - returns the irqchip state of a interrupt.
+ *	@irq: Interrupt line that is forwarded to a VM
+ *	@which: One of IRQCHIP_STATE_* the caller wants to know about
+ *	@state: a pointer to a boolean where the state is to be storeed
+ *
+ *	This call snapshots the internal irqchip state of an
+ *	interrupt, returning into @state the bit corresponding to
+ *	stage @which
+ *
+ *	This function should be called with preemption disabled if the
+ *	interrupt controller has per-cpu registers.
+ */
+int irq_get_irqchip_state(unsigned int irq, enum irqchip_irq_state which,
+			  bool *state)
+{
+	struct irq_desc *desc;
+	struct irq_data *data;
+	struct irq_chip *chip;
+	unsigned long flags;
+	int err = -EINVAL;
+
+	desc = irq_get_desc_buslock(irq, &flags, 0);
+	if (!desc)
+		return err;
+
+	data = irq_desc_get_irq_data(desc);
+
+	do {
+		chip = irq_data_get_irq_chip(data);
+		if (chip->irq_get_irqchip_state)
+			break;
+#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
+		data = data->parent_data;
+#else
+		data = NULL;
+#endif
+	} while (data);
+
+	if (data)
+		err = chip->irq_get_irqchip_state(data, which, state);
+
+	irq_put_desc_busunlock(desc, flags);
+	return err;
+}
+
+/**
+ *	irq_set_irqchip_state - set the state of a forwarded interrupt.
+ *	@irq: Interrupt line that is forwarded to a VM
+ *	@which: State to be restored (one of IRQCHIP_STATE_*)
+ *	@val: Value corresponding to @which
+ *
+ *	This call sets the internal irqchip state of an interrupt,
+ *	depending on the value of @which.
+ *
+ *	This function should be called with preemption disabled if the
+ *	interrupt controller has per-cpu registers.
+ */
+int irq_set_irqchip_state(unsigned int irq, enum irqchip_irq_state which,
+			  bool val)
+{
+	struct irq_desc *desc;
+	struct irq_data *data;
+	struct irq_chip *chip;
+	unsigned long flags;
+	int err = -EINVAL;
+
+	desc = irq_get_desc_buslock(irq, &flags, 0);
+	if (!desc)
+		return err;
+
+	data = irq_desc_get_irq_data(desc);
+
+	do {
+		chip = irq_data_get_irq_chip(data);
+		if (chip->irq_set_irqchip_state)
+			break;
+#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
+		data = data->parent_data;
+#else
+		data = NULL;
+#endif
+	} while (data);
+
+	if (data)
+		err = chip->irq_set_irqchip_state(data, which, val);
+
+	irq_put_desc_busunlock(desc, flags);
+	return err;
+}

kernel/irq/msi.c

@@ -310,8 +310,15 @@ void msi_domain_free_irqs(struct irq_domain *domain, struct device *dev)
 	struct msi_desc *desc;
 
 	for_each_msi_entry(desc, dev) {
-		irq_domain_free_irqs(desc->irq, desc->nvec_used);
-		desc->irq = 0;
+		/*
+		 * We might have failed to allocate an MSI early
+		 * enough that there is no IRQ associated to this
+		 * entry. If that's the case, don't do anything.
+		 */
+		if (desc->irq) {
+			irq_domain_free_irqs(desc->irq, desc->nvec_used);
+			desc->irq = 0;
+		}
 	}
 }