From 8f5ec0a57ef503e7609d763cadba55f12b9486ce Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Thu, 28 Mar 2013 00:49:54 +0900 Subject: [PATCH] ARM: shmobile: r8a7790 IRQC support Add IRQC interrupt controller support to r8a7790 by hooking up a single IRQC instances to handle 4 external IRQ signals. The IRQC controller is tied to SPIs of the GIC. On r8a7790 the external IRQ pins routing is handled by the PFC which is excluded from this patch. Both platform devices and DT devices are added in this patch. The platform device versions are used to provide a static interrupt map configuration for board code written in C. Signed-off-by: Magnus Damm Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7790.dtsi | 9 +++++++++ arch/arm/mach-shmobile/Kconfig | 1 + arch/arm/mach-shmobile/setup-r8a7790.c | 21 +++++++++++++++++++++ 3 files changed, 31 insertions(+) diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 1c58ffb..a1e0e0c 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -51,4 +51,13 @@ <1 11 0xf08>, <1 10 0xf08>; }; + + irqc0: interrupt-controller@e61c0000 { + compatible = "renesas,irqc"; + #interrupt-cells = <2>; + interrupt-controller; + reg = <0xe61c0000 0x200>; + interrupt-parent = <&gic>; + interrupts = <0 0 4>, <0 1 4>, <0 2 4>, <0 3 4>; + }; }; diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig index 749dfb4..ccaea6a 100644 --- a/arch/arm/mach-shmobile/Kconfig +++ b/arch/arm/mach-shmobile/Kconfig @@ -57,6 +57,7 @@ config ARCH_R8A7790 select CPU_V7 select ARM_ARCH_TIMER select SH_CLK_CPG + select RENESAS_IRQC config ARCH_EMEV2 bool "Emma Mobile EV2" diff --git a/arch/arm/mach-shmobile/setup-r8a7790.c b/arch/arm/mach-shmobile/setup-r8a7790.c index 3bb5bf1..9b4ccd7 100644 --- a/arch/arm/mach-shmobile/setup-r8a7790.c +++ b/arch/arm/mach-shmobile/setup-r8a7790.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -74,6 +75,25 @@ static inline void r8a7790_register_scif(int idx) sizeof(struct plat_sci_port)); } +static struct renesas_irqc_config irqc0_data = { + .irq_base = irq_pin(0), /* IRQ0 -> IRQ3 */ +}; + +static struct resource irqc0_resources[] = { + DEFINE_RES_MEM(0xe61c0000, 0x200), /* IRQC Event Detector Block_0 */ + DEFINE_RES_IRQ(gic_spi(0)), /* IRQ0 */ + DEFINE_RES_IRQ(gic_spi(1)), /* IRQ1 */ + DEFINE_RES_IRQ(gic_spi(2)), /* IRQ2 */ + DEFINE_RES_IRQ(gic_spi(3)), /* IRQ3 */ +}; + +#define r8a7790_register_irqc(idx) \ + platform_device_register_resndata(&platform_bus, "renesas_irqc", \ + idx, irqc##idx##_resources, \ + ARRAY_SIZE(irqc##idx##_resources), \ + &irqc##idx##_data, \ + sizeof(struct renesas_irqc_config)) + void __init r8a7790_add_standard_devices(void) { r8a7790_register_scif(SCIFA0); @@ -84,6 +104,7 @@ void __init r8a7790_add_standard_devices(void) r8a7790_register_scif(SCIFA2); r8a7790_register_scif(SCIF0); r8a7790_register_scif(SCIF1); + r8a7790_register_irqc(0); } #ifdef CONFIG_USE_OF -- 2.7.4