diff options
| -rw-r--r-- | Documentation/devicetree/bindings/arm/omap/intc.txt | 27 | ||||
| -rw-r--r-- | arch/arm/boot/dts/am3517_mt_ventoux.dts | 27 | ||||
| -rw-r--r-- | arch/arm/boot/dts/omap3.dtsi | 6 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/board-generic.c | 99 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/common.h | 12 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/irq.c | 60 |
6 files changed, 168 insertions, 63 deletions
diff --git a/Documentation/devicetree/bindings/arm/omap/intc.txt b/Documentation/devicetree/bindings/arm/omap/intc.txt new file mode 100644 index 0000000..f2583e6 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/omap/intc.txt @@ -0,0 +1,27 @@ +* OMAP Interrupt Controller + +OMAP2/3 are using a TI interrupt controller that can support several +configurable number of interrupts. + +Main node required properties: + +- compatible : should be: + "ti,omap2-intc" +- interrupt-controller : Identifies the node as an interrupt controller +- #interrupt-cells : Specifies the number of cells needed to encode an + interrupt source. The type shall be a <u32> and the value shall be 1. + + The cell contains the interrupt number in the range [0-128]. +- ti,intc-size: Number of interrupts handled by the interrupt controller. +- reg: physical base address and size of the intc registers map. + +Example: + + intc: interrupt-controller@1 { + compatible = "ti,omap2-intc"; + interrupt-controller; + #interrupt-cells = <1>; + ti,intc-size = <96>; + reg = <0x48200000 0x1000>; + }; + diff --git a/arch/arm/boot/dts/am3517_mt_ventoux.dts b/arch/arm/boot/dts/am3517_mt_ventoux.dts new file mode 100644 index 0000000..5eb26d7 --- /dev/null +++ b/arch/arm/boot/dts/am3517_mt_ventoux.dts @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2011 Ilya Yanok, EmCraft Systems + * + * 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. + */ +/dts-v1/; + +/include/ "omap3.dtsi" + +/ { + model = "TeeJet Mt.Ventoux"; + compatible = "teejet,mt_ventoux", "ti,omap3"; + + memory { + device_type = "memory"; + reg = <0x80000000 0x10000000>; /* 256 MB */ + }; + + /* AM35xx doesn't have IVA */ + soc { + iva { + status = "disabled"; + }; + }; +}; diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi index e698064..c612135 100644 --- a/arch/arm/boot/dts/omap3.dtsi +++ b/arch/arm/boot/dts/omap3.dtsi @@ -61,10 +61,12 @@ ranges; ti,hwmods = "l3_main"; - intc: interrupt-controller@1 { - compatible = "ti,omap3-intc"; + intc: interrupt-controller@48200000 { + compatible = "ti,omap2-intc"; interrupt-controller; #interrupt-cells = <1>; + ti,intc-size = <96>; + reg = <0x48200000 0x1000>; }; uart1: serial@4806a000 { diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index 02d7e82..74e1687 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -12,6 +12,7 @@ * published by the Free Software Foundation. */ #include <linux/io.h> +#include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/irqdomain.h> #include <linux/i2c/twl.h> @@ -24,33 +25,23 @@ #include "common.h" #include "common-board-devices.h" -/* - * XXX: Still needed to boot until the i2c & twl driver is adapted to - * device-tree - */ -#ifdef CONFIG_ARCH_OMAP4 -static struct twl4030_platform_data sdp4430_twldata = { - .irq_base = TWL6030_IRQ_BASE, - .irq_end = TWL6030_IRQ_END, -}; - -static void __init omap4_i2c_init(void) -{ - omap4_pmic_init("twl6030", &sdp4430_twldata); -} +#if !(defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)) +#define omap_intc_of_init NULL +#endif +#ifndef CONFIG_ARCH_OMAP4 +#define gic_of_init NULL #endif -#ifdef CONFIG_ARCH_OMAP3 -static struct twl4030_platform_data beagle_twldata = { - .irq_base = TWL4030_IRQ_BASE, - .irq_end = TWL4030_IRQ_END, +static struct of_device_id irq_match[] __initdata = { + { .compatible = "ti,omap2-intc", .data = omap_intc_of_init, }, + { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, + { } }; -static void __init omap3_i2c_init(void) +static void __init omap_init_irq(void) { - omap3_pmic_init("twl4030", &beagle_twldata); + of_irq_init(irq_match); } -#endif static struct of_device_id omap_dt_match_table[] __initdata = { { .compatible = "simple-bus", }, @@ -58,39 +49,13 @@ static struct of_device_id omap_dt_match_table[] __initdata = { { } }; -static struct of_device_id intc_match[] __initdata = { - { .compatible = "ti,omap3-intc", }, - { .compatible = "arm,cortex-a9-gic", }, - { } -}; - static void __init omap_generic_init(void) { - struct device_node *node = of_find_matching_node(NULL, intc_match); - if (node) - irq_domain_add_legacy(node, 32, 0, 0, &irq_domain_simple_ops, NULL); - omap_sdrc_init(NULL, NULL); of_platform_populate(NULL, omap_dt_match_table, NULL, NULL); } -#ifdef CONFIG_ARCH_OMAP4 -static void __init omap4_init(void) -{ - omap4_i2c_init(); - omap_generic_init(); -} -#endif - -#ifdef CONFIG_ARCH_OMAP3 -static void __init omap3_init(void) -{ - omap3_i2c_init(); - omap_generic_init(); -} -#endif - #ifdef CONFIG_SOC_OMAP2420 static const char *omap242x_boards_compat[] __initdata = { "ti,omap2420", @@ -101,7 +66,7 @@ DT_MACHINE_START(OMAP242X_DT, "Generic OMAP2420 (Flattened Device Tree)") .reserve = omap_reserve, .map_io = omap242x_map_io, .init_early = omap2420_init_early, - .init_irq = omap2_init_irq, + .init_irq = omap_init_irq, .handle_irq = omap2_intc_handle_irq, .init_machine = omap_generic_init, .timer = &omap2_timer, @@ -120,7 +85,7 @@ DT_MACHINE_START(OMAP243X_DT, "Generic OMAP2430 (Flattened Device Tree)") .reserve = omap_reserve, .map_io = omap243x_map_io, .init_early = omap2430_init_early, - .init_irq = omap2_init_irq, + .init_irq = omap_init_irq, .handle_irq = omap2_intc_handle_irq, .init_machine = omap_generic_init, .timer = &omap2_timer, @@ -130,6 +95,22 @@ MACHINE_END #endif #ifdef CONFIG_ARCH_OMAP3 +static struct twl4030_platform_data beagle_twldata = { + .irq_base = TWL4030_IRQ_BASE, + .irq_end = TWL4030_IRQ_END, +}; + +static void __init omap3_i2c_init(void) +{ + omap3_pmic_init("twl4030", &beagle_twldata); +} + +static void __init omap3_init(void) +{ + omap3_i2c_init(); + omap_generic_init(); +} + static const char *omap3_boards_compat[] __initdata = { "ti,omap3", NULL, @@ -139,7 +120,7 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)") .reserve = omap_reserve, .map_io = omap3_map_io, .init_early = omap3430_init_early, - .init_irq = omap3_init_irq, + .init_irq = omap_init_irq, .handle_irq = omap3_intc_handle_irq, .init_machine = omap3_init, .timer = &omap3_timer, @@ -149,6 +130,22 @@ MACHINE_END #endif #ifdef CONFIG_ARCH_OMAP4 +static struct twl4030_platform_data sdp4430_twldata = { + .irq_base = TWL6030_IRQ_BASE, + .irq_end = TWL6030_IRQ_END, +}; + +static void __init omap4_i2c_init(void) +{ + omap4_pmic_init("twl6030", &sdp4430_twldata); +} + +static void __init omap4_init(void) +{ + omap4_i2c_init(); + omap_generic_init(); +} + static const char *omap4_boards_compat[] __initdata = { "ti,omap4", NULL, @@ -158,7 +155,7 @@ DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)") .reserve = omap_reserve, .map_io = omap4_map_io, .init_early = omap4430_init_early, - .init_irq = gic_init_irq, + .init_irq = omap_init_irq, .handle_irq = gic_handle_irq, .init_machine = omap4_init, .timer = &omap4_timer, diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index 7e9338e..99604d3 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -175,6 +175,18 @@ void omap3_intc_handle_irq(struct pt_regs *regs); extern void __iomem *omap4_get_l2cache_base(void); #endif +struct device_node; +#ifdef CONFIG_OF +int __init omap_intc_of_init(struct device_node *node, + struct device_node *parent); +#else +int __init omap_intc_of_init(struct device_node *node, + struct device_node *parent) +{ + return 0; +} +#endif + #ifdef CONFIG_SMP extern void __iomem *omap4_get_scu_base(void); #else diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c index 1fef061..26eaf37 100644 --- a/arch/arm/mach-omap2/irq.c +++ b/arch/arm/mach-omap2/irq.c @@ -11,12 +11,16 @@ * for more details. */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> #include <mach/hardware.h> #include <asm/exception.h> #include <asm/mach/irq.h> +#include <linux/irqdomain.h> +#include <linux/of.h> +#include <linux/of_address.h> /* selected INTC register offsets */ @@ -57,6 +61,8 @@ static struct omap_irq_bank { }, }; +static struct irq_domain *domain; + /* Structure to save interrupt controller context */ struct omap3_intc_regs { u32 sysconfig; @@ -147,17 +153,27 @@ omap_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num) IRQ_NOREQUEST | IRQ_NOPROBE, 0); } -static void __init omap_init_irq(u32 base, int nr_irqs) +static void __init omap_init_irq(u32 base, int nr_irqs, + struct device_node *node) { void __iomem *omap_irq_base; unsigned long nr_of_irqs = 0; unsigned int nr_banks = 0; - int i, j; + int i, j, irq_base; omap_irq_base = ioremap(base, SZ_4K); if (WARN_ON(!omap_irq_base)) return; + irq_base = irq_alloc_descs(-1, 0, nr_irqs, 0); + if (irq_base < 0) { + pr_warn("Couldn't allocate IRQ numbers\n"); + irq_base = 0; + } + + domain = irq_domain_add_legacy(node, nr_irqs, irq_base, 0, + &irq_domain_simple_ops, NULL); + for (i = 0; i < ARRAY_SIZE(irq_banks); i++) { struct omap_irq_bank *bank = irq_banks + i; @@ -166,36 +182,36 @@ static void __init omap_init_irq(u32 base, int nr_irqs) /* Static mapping, never released */ bank->base_reg = ioremap(base, SZ_4K); if (!bank->base_reg) { - printk(KERN_ERR "Could not ioremap irq bank%i\n", i); + pr_err("Could not ioremap irq bank%i\n", i); continue; } omap_irq_bank_init_one(bank); for (j = 0; j < bank->nr_irqs; j += 32) - omap_alloc_gc(bank->base_reg + j, j, 32); + omap_alloc_gc(bank->base_reg + j, j + irq_base, 32); nr_of_irqs += bank->nr_irqs; nr_banks++; } - printk(KERN_INFO "Total of %ld interrupts on %d active controller%s\n", - nr_of_irqs, nr_banks, nr_banks > 1 ? "s" : ""); + pr_info("Total of %ld interrupts on %d active controller%s\n", + nr_of_irqs, nr_banks, nr_banks > 1 ? "s" : ""); } void __init omap2_init_irq(void) { - omap_init_irq(OMAP24XX_IC_BASE, 96); + omap_init_irq(OMAP24XX_IC_BASE, 96, NULL); } void __init omap3_init_irq(void) { - omap_init_irq(OMAP34XX_IC_BASE, 96); + omap_init_irq(OMAP34XX_IC_BASE, 96, NULL); } void __init ti81xx_init_irq(void) { - omap_init_irq(OMAP34XX_IC_BASE, 128); + omap_init_irq(OMAP34XX_IC_BASE, 128, NULL); } static inline void omap_intc_handle_irq(void __iomem *base_addr, struct pt_regs *regs) @@ -225,8 +241,10 @@ out: irqnr = readl_relaxed(base_addr + INTCPS_SIR_IRQ_OFFSET); irqnr &= ACTIVEIRQ_MASK; - if (irqnr) + if (irqnr) { + irqnr = irq_find_mapping(domain, irqnr); handle_IRQ(irqnr, regs); + } } while (irqnr); } @@ -236,6 +254,28 @@ asmlinkage void __exception_irq_entry omap2_intc_handle_irq(struct pt_regs *regs omap_intc_handle_irq(base_addr, regs); } +int __init omap_intc_of_init(struct device_node *node, + struct device_node *parent) +{ + struct resource res; + u32 nr_irqs = 96; + + if (WARN_ON(!node)) + return -ENODEV; + + if (of_address_to_resource(node, 0, &res)) { + WARN(1, "unable to get intc registers\n"); + return -EINVAL; + } + + if (of_property_read_u32(node, "ti,intc-size", &nr_irqs)) + pr_warn("unable to get intc-size, default to %d\n", nr_irqs); + + omap_init_irq(res.start, nr_irqs, of_node_get(node)); + + return 0; +} + #ifdef CONFIG_ARCH_OMAP3 static struct omap3_intc_regs intc_context[ARRAY_SIZE(irq_banks)]; |