diff options
| -rw-r--r-- | arch/arm/mach-dove/irq.c | 36 | ||||
| -rw-r--r-- | arch/arm/mach-kirkwood/irq.c | 37 | ||||
| -rw-r--r-- | arch/arm/plat-orion/irq.c | 45 |
3 files changed, 73 insertions, 45 deletions
diff --git a/arch/arm/mach-dove/irq.c b/arch/arm/mach-dove/irq.c index bc4344aa1009..4a5a7aedcb76 100644 --- a/arch/arm/mach-dove/irq.c +++ b/arch/arm/mach-dove/irq.c @@ -108,6 +108,38 @@ static int __initdata gpio2_irqs[4] = { 0, }; +#ifdef CONFIG_MULTI_IRQ_HANDLER +/* + * Compiling with both non-DT and DT support enabled, will + * break asm irq handler used by non-DT boards. Therefore, + * we provide a C-style irq handler even for non-DT boards, + * if MULTI_IRQ_HANDLER is set. + */ + +static void __iomem *dove_irq_base = IRQ_VIRT_BASE; + +static asmlinkage void +__exception_irq_entry dove_legacy_handle_irq(struct pt_regs *regs) +{ + u32 stat; + + stat = readl_relaxed(dove_irq_base + IRQ_CAUSE_LOW_OFF); + stat &= readl_relaxed(dove_irq_base + IRQ_MASK_LOW_OFF); + if (stat) { + unsigned int hwirq = __fls(stat); + handle_IRQ(hwirq, regs); + return; + } + stat = readl_relaxed(dove_irq_base + IRQ_CAUSE_HIGH_OFF); + stat &= readl_relaxed(dove_irq_base + IRQ_MASK_HIGH_OFF); + if (stat) { + unsigned int hwirq = 32 + __fls(stat); + handle_IRQ(hwirq, regs); + return; + } +} +#endif + void __init dove_init_irq(void) { int i; @@ -115,6 +147,10 @@ void __init dove_init_irq(void) orion_irq_init(0, IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF); orion_irq_init(32, IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF); +#ifdef CONFIG_MULTI_IRQ_HANDLER + set_handle_irq(dove_legacy_handle_irq); +#endif + /* * Initialize gpiolib for GPIOs 0-71. */ diff --git a/arch/arm/mach-kirkwood/irq.c b/arch/arm/mach-kirkwood/irq.c index 2a97a2e4163c..2c47a8ad0e27 100644 --- a/arch/arm/mach-kirkwood/irq.c +++ b/arch/arm/mach-kirkwood/irq.c @@ -7,6 +7,7 @@ * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ +#include <asm/exception.h> #include <linux/gpio.h> #include <linux/kernel.h> #include <linux/irq.h> @@ -30,11 +31,47 @@ static int __initdata gpio1_irqs[4] = { 0, }; +#ifdef CONFIG_MULTI_IRQ_HANDLER +/* + * Compiling with both non-DT and DT support enabled, will + * break asm irq handler used by non-DT boards. Therefore, + * we provide a C-style irq handler even for non-DT boards, + * if MULTI_IRQ_HANDLER is set. + */ + +static void __iomem *kirkwood_irq_base = IRQ_VIRT_BASE; + +asmlinkage void +__exception_irq_entry kirkwood_legacy_handle_irq(struct pt_regs *regs) +{ + u32 stat; + + stat = readl_relaxed(kirkwood_irq_base + IRQ_CAUSE_LOW_OFF); + stat &= readl_relaxed(kirkwood_irq_base + IRQ_MASK_LOW_OFF); + if (stat) { + unsigned int hwirq = __fls(stat); + handle_IRQ(hwirq, regs); + return; + } + stat = readl_relaxed(kirkwood_irq_base + IRQ_CAUSE_HIGH_OFF); + stat &= readl_relaxed(kirkwood_irq_base + IRQ_MASK_HIGH_OFF); + if (stat) { + unsigned int hwirq = 32 + __fls(stat); + handle_IRQ(hwirq, regs); + return; + } +} +#endif + void __init kirkwood_init_irq(void) { orion_irq_init(0, IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF); orion_irq_init(32, IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF); +#ifdef CONFIG_MULTI_IRQ_HANDLER + set_handle_irq(kirkwood_legacy_handle_irq); +#endif + /* * Initialize gpiolib for GPIOs 0-49. */ diff --git a/arch/arm/plat-orion/irq.c b/arch/arm/plat-orion/irq.c index 807df142444b..27ec18b53595 100644 --- a/arch/arm/plat-orion/irq.c +++ b/arch/arm/plat-orion/irq.c @@ -20,47 +20,6 @@ #include <plat/orion-gpio.h> #include <mach/bridge-regs.h> -#ifdef CONFIG_MULTI_IRQ_HANDLER -/* - * Compiling with both non-DT and DT support enabled, will - * break asm irq handler used by non-DT boards. Therefore, - * we provide a C-style irq handler even for non-DT boards, - * if MULTI_IRQ_HANDLER is set. - * - * Notes: - * - this is prepared for Kirkwood and Dove only, update - * accordingly if you add Orion5x or MV78x00. - * - Orion5x uses different macro names and has only one - * set of CAUSE/MASK registers. - * - MV78x00 uses the same macro names but has a third - * set of CAUSE/MASK registers. - * - */ - -static void __iomem *orion_irq_base = IRQ_VIRT_BASE; - -asmlinkage void -__exception_irq_entry orion_legacy_handle_irq(struct pt_regs *regs) -{ - u32 stat; - - stat = readl_relaxed(orion_irq_base + IRQ_CAUSE_LOW_OFF); - stat &= readl_relaxed(orion_irq_base + IRQ_MASK_LOW_OFF); - if (stat) { - unsigned int hwirq = __fls(stat); - handle_IRQ(hwirq, regs); - return; - } - stat = readl_relaxed(orion_irq_base + IRQ_CAUSE_HIGH_OFF); - stat &= readl_relaxed(orion_irq_base + IRQ_MASK_HIGH_OFF); - if (stat) { - unsigned int hwirq = 32 + __fls(stat); - handle_IRQ(hwirq, regs); - return; - } -} -#endif - void __init orion_irq_init(unsigned int irq_start, void __iomem *maskaddr) { struct irq_chip_generic *gc; @@ -78,10 +37,6 @@ void __init orion_irq_init(unsigned int irq_start, void __iomem *maskaddr) ct->chip.irq_unmask = irq_gc_mask_set_bit; irq_setup_generic_chip(gc, IRQ_MSK(32), IRQ_GC_INIT_MASK_CACHE, IRQ_NOREQUEST, IRQ_LEVEL | IRQ_NOPROBE); - -#ifdef CONFIG_MULTI_IRQ_HANDLER - set_handle_irq(orion_legacy_handle_irq); -#endif } #ifdef CONFIG_OF |