diff options
Diffstat (limited to 'kernel/arch/arm/plat-orion/irq.c')
| -rw-r--r-- | kernel/arch/arm/plat-orion/irq.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/arch/arm/plat-orion/irq.c b/kernel/arch/arm/plat-orion/irq.c new file mode 100644 index 000000000..8c1fc0600 --- /dev/null +++ b/kernel/arch/arm/plat-orion/irq.c @@ -0,0 +1,40 @@ +/* + * arch/arm/plat-orion/irq.c + * + * Marvell Orion SoC IRQ handling. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> +#include <linux/io.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <asm/exception.h> +#include <plat/irq.h> +#include <plat/orion-gpio.h> +#include <mach/bridge-regs.h> + +void __init orion_irq_init(unsigned int irq_start, void __iomem *maskaddr) +{ + struct irq_chip_generic *gc; + struct irq_chip_type *ct; + + /* + * Mask all interrupts initially. + */ + writel(0, maskaddr); + + gc = irq_alloc_generic_chip("orion_irq", 1, irq_start, maskaddr, + handle_level_irq); + ct = gc->chip_types; + ct->chip.irq_mask = irq_gc_mask_clr_bit; + 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); +} |