projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3085de6a | 1 | /* |
| 9dd0b194 | 2 | * arch/arm/mach-orion5x/irq.c |
| 3085de6a TP |
3 | * |
| 4 | * Core IRQ functions for Marvell Orion System On Chip | |
| 5 | * | |
| 6 | * Maintainer: Tzachi Perelstein <tzachi@marvell.com> | |
| 7 | * | |
| 8 | * This file is licensed under the terms of the GNU General Public | |
| 159ffb3a | 9 | * License version 2. This program is licensed "as is" without any |
| 3085de6a TP |
10 | * warranty of any kind, whether express or implied. |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/kernel.h> | |
| 14 | #include <linux/init.h> | |
| 15 | #include <linux/irq.h> | |
| fced80c7 | 16 | #include <linux/io.h> |
| 3085de6a | 17 | #include <asm/gpio.h> |
| a09e64fb | 18 | #include <mach/orion5x.h> |
| 6f088f1d | 19 | #include <plat/irq.h> |
| 3085de6a TP |
20 | #include "common.h" |
| 21 | ||
| 07332318 | 22 | static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) |
| 3085de6a | 23 | { |
| 9dd0b194 | 24 | BUG_ON(irq < IRQ_ORION5X_GPIO_0_7 || irq > IRQ_ORION5X_GPIO_24_31); |
| f0066614 | 25 | |
| 07332318 | 26 | orion_gpio_irq_handler((irq - IRQ_ORION5X_GPIO_0_7) << 3); |
| 3085de6a TP |
27 | } |
| 28 | ||
| 07332318 | 29 | void __init orion5x_init_irq(void) |
| 3085de6a TP |
30 | { |
| 31 | int i; | |
| 07332318 LB |
32 | |
| 33 | orion_irq_init(0, (void __iomem *)MAIN_IRQ_MASK); | |
| 3085de6a TP |
34 | |
| 35 | /* | |
| 36 | * Mask and clear GPIO IRQ interrupts | |
| 37 | */ | |
| 07332318 LB |
38 | writel(0x0, GPIO_LEVEL_MASK(0)); |
| 39 | writel(0x0, GPIO_EDGE_MASK(0)); | |
| 40 | writel(0x0, GPIO_EDGE_CAUSE(0)); | |
| 3085de6a TP |
41 | |
| 42 | /* | |
| f0066614 TP |
43 | * Register chained level handlers for GPIO IRQs by default. |
| 44 | * User can use set_type() if he wants to use edge types handlers. | |
| 3085de6a | 45 | */ |
| 9dd0b194 | 46 | for (i = IRQ_ORION5X_GPIO_START; i < NR_IRQS; i++) { |
| fd4b9b36 | 47 | set_irq_chip(i, &orion_gpio_irq_chip); |
| 3085de6a | 48 | set_irq_handler(i, handle_level_irq); |
| 07332318 | 49 | irq_desc[i].status |= IRQ_LEVEL; |
| 3085de6a TP |
50 | set_irq_flags(i, IRQF_VALID); |
| 51 | } | |
| 07332318 LB |
52 | set_irq_chained_handler(IRQ_ORION5X_GPIO_0_7, gpio_irq_handler); |
| 53 | set_irq_chained_handler(IRQ_ORION5X_GPIO_8_15, gpio_irq_handler); | |
| 54 | set_irq_chained_handler(IRQ_ORION5X_GPIO_16_23, gpio_irq_handler); | |
| 55 | set_irq_chained_handler(IRQ_ORION5X_GPIO_24_31, gpio_irq_handler); | |
| 3085de6a | 56 | } |