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54 lines
1.2 KiB
54 lines
1.2 KiB
/* |
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* arch/arm/mach-orion5x/irq.c |
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* |
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* Core IRQ functions for Marvell Orion System On Chip |
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* |
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* Maintainer: Tzachi Perelstein <[email protected]> |
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* |
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* This file is licensed under the terms of the GNU General Public |
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* License version 2. This program is licensed "as is" without any |
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* warranty of any kind, whether express or implied. |
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*/ |
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#include <linux/gpio.h> |
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#include <linux/kernel.h> |
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#include <linux/irq.h> |
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#include <linux/io.h> |
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#include <plat/orion-gpio.h> |
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#include <plat/irq.h> |
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#include <asm/exception.h> |
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#include "bridge-regs.h" |
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#include "common.h" |
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static int __initdata gpio0_irqs[4] = { |
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IRQ_ORION5X_GPIO_0_7, |
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IRQ_ORION5X_GPIO_8_15, |
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IRQ_ORION5X_GPIO_16_23, |
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IRQ_ORION5X_GPIO_24_31, |
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}; |
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static asmlinkage void |
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__exception_irq_entry orion5x_legacy_handle_irq(struct pt_regs *regs) |
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{ |
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u32 stat; |
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stat = readl_relaxed(MAIN_IRQ_CAUSE); |
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stat &= readl_relaxed(MAIN_IRQ_MASK); |
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if (stat) { |
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unsigned int hwirq = 1 + __fls(stat); |
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handle_IRQ(hwirq, regs); |
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return; |
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} |
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} |
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void __init orion5x_init_irq(void) |
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{ |
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orion_irq_init(1, MAIN_IRQ_MASK); |
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set_handle_irq(orion5x_legacy_handle_irq); |
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/* |
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* Initialize gpiolib for GPIOs 0-31. |
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*/ |
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orion_gpio_init(NULL, 0, 32, GPIO_VIRT_BASE, 0, |
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IRQ_ORION5X_GPIO_START, gpio0_irqs); |
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}
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