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
  ...

40 files changed, 409 insertions, 364 deletions

diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index 1943fc333e7c..8a099bc10c1e 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/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 @@
                 #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 {
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index f84d9715a4a9..26956cb50835 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -352,7 +352,6 @@
                 reg = <0x24>;
                 compatible = "ti,tps65218";
                 interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* NMIn */
-                interrupt-parent = <&gic>;
                 interrupt-controller;
                 #interrupt-cells = <2>;
 
diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts
index 832d24318f62..8ae29c955c11 100644
--- a/arch/arm/boot/dts/am437x-sk-evm.dts
+++ b/arch/arm/boot/dts/am437x-sk-evm.dts
@@ -392,7 +392,6 @@
         tps@24 {
                 compatible = "ti,tps65218";
                 reg = <0x24>;
-                interrupt-parent = <&gic>;
                 interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
                 interrupt-controller;
                 #interrupt-cells = <2>;
diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index 257c099c347e..1d7109196872 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -369,7 +369,6 @@
                 reg = <0x24>;
                 compatible = "ti,tps65218";
                 interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* NMIn */
-                interrupt-parent = <&gic>;
                 interrupt-controller;
                 #interrupt-cells = <2>;
 
diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
index 6463f9ef2b54..bd48dba16748 100644
--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
@@ -454,7 +454,6 @@
         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 @@
 
 &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";
diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index 7563d7ce01bb..b1bd06c6c2a8 100644
--- a/arch/arm/boot/dts/dra7-evm.dts
+++ b/arch/arm/boot/dts/dra7-evm.dts
@@ -444,7 +444,7 @@
         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>;
 };
 
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index c4659a979c41..a0afce7ad482 100644
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/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 @@
                              <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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                         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>;
diff --git a/arch/arm/boot/dts/dra72-evm.dts b/arch/arm/boot/dts/dra72-evm.dts
index 40ed539ce474..daf28110d487 100644
--- a/arch/arm/boot/dts/dra72-evm.dts
+++ b/arch/arm/boot/dts/dra72-evm.dts
@@ -158,7 +158,6 @@
                 pinctrl-0 = <&tps65917_pins_default>;
 
                 interrupts = <GIC_SPI 2 IRQ_TYPE_NONE>;  /* IRQ_SYS_1N */
-                interrupt-parent = <&gic>;
                 interrupt-controller;
                 #interrupt-cells = <2>;
 
diff --git a/arch/arm/boot/dts/dra72x.dtsi b/arch/arm/boot/dts/dra72x.dtsi
index e5a3d23a3df1..f7fb0d0ef25a 100644
--- a/arch/arm/boot/dts/dra72x.dtsi
+++ b/arch/arm/boot/dts/dra72x.dtsi
@@ -25,6 +25,7 @@
 
         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>;
         };
 };
diff --git a/arch/arm/boot/dts/dra74x.dtsi b/arch/arm/boot/dts/dra74x.dtsi
index 10173fab1a15..00eeed789b4b 100644
--- a/arch/arm/boot/dts/dra74x.dtsi
+++ b/arch/arm/boot/dts/dra74x.dtsi
@@ -41,8 +41,9 @@
 
         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 {
diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi
index ac6b0ae42caf..14ab515aa83c 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -131,6 +131,9 @@
                 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 @@
                         compatible = "samsung,exynos3250-rtc";
                         reg = <0x10070000 0x100>;
                         interrupts = <0 73 0>, <0 74 0>;
+                        interrupt-parent = <&pmu_system_controller>;
                         status = "disabled";
                 };
 
diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi
index 77ea547768f4..e20cdc24c3bb 100644
--- a/arch/arm/boot/dts/exynos4.dtsi
+++ b/arch/arm/boot/dts/exynos4.dtsi
@@ -154,6 +154,9 @@
         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 @@
         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";
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index adbde1adad95..77f656eb8e6b 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -205,6 +205,9 @@
                 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 @@
         rtc: rtc@101E0000 {
                 clocks = <&clock CLK_RTC>;
                 clock-names = "rtc";
+                interrupt-parent = <&pmu_system_controller>;
                 status = "disabled";
         };
 
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index c0e98cf3514f..b3d2d53820e3 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -327,6 +327,7 @@
         rtc: rtc@101E0000 {
                 clocks = <&clock CLK_RTC>;
                 clock-names = "rtc";
+                interrupt-parent = <&pmu_system_controller>;
                 status = "disabled";
         };
 
@@ -770,6 +771,9 @@
                 clock-names = "clkout16";
                 clocks = <&clock CLK_FIN_PLL>;
                 #clock-cells = <1>;
+                interrupt-controller;
+                #interrupt-cells = <3>;
+                interrupt-parent = <&gic>;
         };
 
         sysreg_system_controller: syscon@10050000 {
diff --git a/arch/arm/boot/dts/omap4-duovero.dtsi b/arch/arm/boot/dts/omap4-duovero.dtsi
index e860ccd9d09c..f2a94fa62552 100644
--- a/arch/arm/boot/dts/omap4-duovero.dtsi
+++ b/arch/arm/boot/dts/omap4-duovero.dtsi
@@ -173,14 +173,12 @@
         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>;
diff --git a/arch/arm/boot/dts/omap4-panda-common.dtsi b/arch/arm/boot/dts/omap4-panda-common.dtsi
index 150513506c19..7c15fb2e2fe4 100644
--- a/arch/arm/boot/dts/omap4-panda-common.dtsi
+++ b/arch/arm/boot/dts/omap4-panda-common.dtsi
@@ -372,7 +372,6 @@
                 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 @@
 
                 /* 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 @@
 };
 
 &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>;
 };
 
diff --git a/arch/arm/boot/dts/omap4-sdp.dts b/arch/arm/boot/dts/omap4-sdp.dts
index 3e1da43068f6..8aca8dae968a 100644
--- a/arch/arm/boot/dts/omap4-sdp.dts
+++ b/arch/arm/boot/dts/omap4-sdp.dts
@@ -363,7 +363,6 @@
                 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 @@
 
                 /* 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 @@
 };
 
 &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>;
diff --git a/arch/arm/boot/dts/omap4-var-som-om44.dtsi b/arch/arm/boot/dts/omap4-var-som-om44.dtsi
index 062701e1a898..a4f1ba2e1903 100644
--- a/arch/arm/boot/dts/omap4-var-som-om44.dtsi
+++ b/arch/arm/boot/dts/omap4-var-som-om44.dtsi
@@ -185,7 +185,6 @@
                 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 @@
 
                 /* 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>;
diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi
index 87401d9f4d8b..f2091d1c9c36 100644
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/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 @@
                 #interrupt-cells = <3>;
                 reg = <0x48241000 0x1000>,
                       <0x48240100 0x0100>;
+                interrupt-parent = <&gic>;
         };
 
         L2: l2-cache-controller@48242000 {
@@ -70,6 +71,15 @@
                 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 @@
                 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 @@
                 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 @@
                 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>;
                 };
diff --git a/arch/arm/boot/dts/omap5-cm-t54.dts b/arch/arm/boot/dts/omap5-cm-t54.dts
index b54b271e153b..61ad2ea34720 100644
--- a/arch/arm/boot/dts/omap5-cm-t54.dts
+++ b/arch/arm/boot/dts/omap5-cm-t54.dts
@@ -412,7 +412,6 @@
         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>;
diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts
index 159720d6c956..74777a6e200a 100644
--- a/arch/arm/boot/dts/omap5-uevm.dts
+++ b/arch/arm/boot/dts/omap5-uevm.dts
@@ -311,7 +311,6 @@
         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 @@
                 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>;
diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
index 4a485b63a141..77b5f70d0ebc 100644
--- a/arch/arm/boot/dts/omap5.dtsi
+++ b/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 @@
                              <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 @@
                       <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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                 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 @@
                         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>;
                         };
                 };
diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
index 4296b5398bf5..f58a3d9d5f13 100644
--- a/arch/arm/boot/dts/tegra114.dtsi
+++ b/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 @@
                       <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 @@
                                 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
                         <GIC_PPI 10
                                 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+                interrupt-parent = <&gic>;
         };
 };
diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi
index 4be06c6ea0c8..db85695aa7aa 100644
--- a/arch/arm/boot/dts/tegra124.dtsi
+++ b/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 @@
                       <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 @@
                 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 @@
                                 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
                              <GIC_PPI 10
                                 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+                interrupt-parent = <&gic>;
         };
 };
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index e5527f742696..adf6b048d0bb 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/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 @@
 
         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 @@
                        0x50040100 0x0100>;
                 interrupt-controller;
                 #interrupt-cells = <3>;
+                interrupt-parent = <&intc>;
         };
 
         cache-controller@50043000 {
@@ -165,6 +167,17 @@
                 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>;
diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
index db4810df142c..60e205a0f63d 100644
--- a/arch/arm/boot/dts/tegra30.dtsi
+++ b/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 @@
         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 @@
                        0x50040100 0x0100>;
                 interrupt-controller;
                 #interrupt-cells = <3>;
+                interrupt-parent = <&intc>;
         };
 
         cache-controller@50043000 {
@@ -250,6 +252,18 @@
                 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>;
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 9e9dfdfad9d7..f44c2e05c82e 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/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)
diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c
index 318d127df147..2146d918aedd 100644
--- a/arch/arm/mach-exynos/suspend.c
+++ b/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);
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index e8627e04e1e6..c8dffcee9736 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/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
diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c
index f961c46453b9..3b56722dfd8a 100644
--- a/arch/arm/mach-omap2/omap-wakeupgen.c
+++ b/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);
@@ -437,14 +507,6 @@ int __init omap_wakeupgen_init(void)
         }
 
         /*
-         * 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);
diff --git a/arch/arm/mach-omap2/omap-wakeupgen.h b/arch/arm/mach-omap2/omap-wakeupgen.h
index b3c8eccfae79..a3491ad12368 100644
--- a/arch/arm/mach-omap2/omap-wakeupgen.h
+++ b/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
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index cee0fe1ee6ff..7bb116a6f86f 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/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();
 }
diff --git a/arch/arm/mach-shmobile/intc-sh73a0.c b/arch/arm/mach-shmobile/intc-sh73a0.c
index 9e3618028acc..fd63ae6532fc 100644
--- a/arch/arm/mach-shmobile/intc-sh73a0.c
+++ b/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);
diff --git a/arch/arm/mach-shmobile/setup-r8a7779.c b/arch/arm/mach-shmobile/setup-r8a7779.c
index 27dceaf9e688..c03e562be12b 100644
--- a/arch/arm/mach-shmobile/setup-r8a7779.c
+++ b/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);
diff --git a/arch/arm/mach-tegra/iomap.h b/arch/arm/mach-tegra/iomap.h
index ee79808e93a3..81dc950b4881 100644
--- a/arch/arm/mach-tegra/iomap.h
+++ b/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
 
diff --git a/arch/arm/mach-tegra/irq.c b/arch/arm/mach-tegra/irq.c
index ab95f5391a2b..3b9098d27ea5 100644
--- a/arch/arm/mach-tegra/irq.c
+++ b/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();
 }
diff --git a/arch/arm/mach-tegra/irq.h b/arch/arm/mach-tegra/irq.h
index bc05ce5613fb..5142649bba05 100644
--- a/arch/arm/mach-tegra/irq.h
+++ b/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
diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c
index 914341bcef25..861d88486dbe 100644
--- a/arch/arm/mach-tegra/tegra.c
+++ b/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)
diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c
index dbb2970ee7da..6ced0f680262 100644
--- a/arch/arm/mach-ux500/cpu.c
+++ b/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();
 
         /*
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index c887196cfdbe..58ef2a700414 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/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();
 }