2 * arch/arm/mach-orion5x/irq.c
4 * Core IRQ functions for Marvell Orion System On Chip
6 * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
8 * This file is licensed under the terms of the GNU General Public
9 * License version 2. This program is licensed "as is" without any
10 * warranty of any kind, whether express or implied.
12 #include <linux/gpio.h>
13 #include <linux/kernel.h>
14 #include <linux/irq.h>
16 #include <plat/orion-gpio.h>
18 #include <asm/exception.h>
19 #include "bridge-regs.h"
22 static int __initdata gpio0_irqs
[4] = {
24 IRQ_ORION5X_GPIO_8_15
,
25 IRQ_ORION5X_GPIO_16_23
,
26 IRQ_ORION5X_GPIO_24_31
,
29 static asmlinkage
void
30 __exception_irq_entry
orion5x_legacy_handle_irq(struct pt_regs
*regs
)
34 stat
= readl_relaxed(MAIN_IRQ_CAUSE
);
35 stat
&= readl_relaxed(MAIN_IRQ_MASK
);
37 unsigned int hwirq
= 1 + __fls(stat
);
38 handle_IRQ(hwirq
, regs
);
43 void __init
orion5x_init_irq(void)
45 orion_irq_init(1, MAIN_IRQ_MASK
);
47 set_handle_irq(orion5x_legacy_handle_irq
);
50 * Initialize gpiolib for GPIOs 0-31.
52 orion_gpio_init(NULL
, 0, 32, GPIO_VIRT_BASE
, 0,
53 IRQ_ORION5X_GPIO_START
, gpio0_irqs
);